diff options
Diffstat (limited to 'target')
53 files changed, 11464 insertions, 63051 deletions
diff --git a/target/linux/generic/files/fs/yaffs2/Kconfig b/target/linux/generic/files/fs/yaffs2/Kconfig index c0e545b647..7b3988c3a0 100644 --- a/target/linux/generic/files/fs/yaffs2/Kconfig +++ b/target/linux/generic/files/fs/yaffs2/Kconfig @@ -90,23 +90,15 @@ config YAFFS_AUTO_YAFFS2 If unsure, say Y. -config YAFFS_DISABLE_LAZY_LOAD - bool "Disable lazy loading" - depends on YAFFS_YAFFS2 +config YAFFS_DISABLE_TAGS_ECC + bool "Disable YAFFS from doing ECC on tags by default" + depends on YAFFS_FS && YAFFS_YAFFS2 default n help - "Lazy loading" defers loading file details until they are - required. This saves mount time, but makes the first look-up - a bit longer. - - Lazy loading will only happen if enabled by this option being 'n' - and if the appropriate tags are available, else yaffs2 will - automatically fall back to immediate loading and do the right - thing. - - Lazy laoding will be required by checkpointing. - - Setting this to 'y' will disable lazy loading. + This defaults Yaffs to using its own ECC calculations on tags instead of + just relying on the MTD. + This behavior can also be overridden with tags_ecc_on and + tags_ecc_off mount options. If unsure, say N. @@ -154,3 +146,45 @@ config YAFFS_SHORT_NAMES_IN_RAM but makes look-ups faster. If unsure, say Y. + +config YAFFS_EMPTY_LOST_AND_FOUND + bool "Empty lost and found on boot" + depends on YAFFS_FS + default n + help + If this is enabled then the contents of lost and found is + automatically dumped at mount. + + If unsure, say N. + +config YAFFS_DISABLE_BLOCK_REFRESHING + bool "Disable yaffs2 block refreshing" + depends on YAFFS_FS + default n + help + If this is set, then block refreshing is disabled. + Block refreshing infrequently refreshes the oldest block in + a yaffs2 file system. This mechanism helps to refresh flash to + mitigate against data loss. This is particularly useful for MLC. + + If unsure, say N. + +config YAFFS_DISABLE_BACKGROUND + bool "Disable yaffs2 background processing" + depends on YAFFS_FS + default n + help + If this is set, then background processing is disabled. + Background processing makes many foreground activities faster. + + If unsure, say N. + +config YAFFS_XATTR + bool "Enable yaffs2 xattr support" + depends on YAFFS_FS + default y + help + If this is set then yaffs2 will provide xattr support. + If unsure, say Y. + + diff --git a/target/linux/generic/files/fs/yaffs2/Makefile b/target/linux/generic/files/fs/yaffs2/Makefile index 382ee6142c..fbdbd4a019 100644 --- a/target/linux/generic/files/fs/yaffs2/Makefile +++ b/target/linux/generic/files/fs/yaffs2/Makefile @@ -4,7 +4,14 @@ obj-$(CONFIG_YAFFS_FS) += yaffs.o -yaffs-y := yaffs_ecc.o yaffs_fs.o yaffs_guts.o yaffs_checkptrw.o -yaffs-y += yaffs_packedtags1.o yaffs_packedtags2.o yaffs_nand.o yaffs_qsort.o +yaffs-y := yaffs_ecc.o yaffs_vfs_glue.o yaffs_guts.o yaffs_checkptrw.o +yaffs-y += yaffs_packedtags1.o yaffs_packedtags2.o yaffs_nand.o yaffs-y += yaffs_tagscompat.o yaffs_tagsvalidity.o yaffs-y += yaffs_mtdif.o yaffs_mtdif1.o yaffs_mtdif2.o +yaffs-y += yaffs_nameval.o +yaffs-y += yaffs_allocator.o +yaffs-y += yaffs_yaffs1.o +yaffs-y += yaffs_yaffs2.o +yaffs-y += yaffs_bitmap.o +yaffs-y += yaffs_verify.o + diff --git a/target/linux/generic/files/fs/yaffs2/NOTE.openwrt b/target/linux/generic/files/fs/yaffs2/NOTE.openwrt index fe1049d8a8..1ad01d02bc 100644 --- a/target/linux/generic/files/fs/yaffs2/NOTE.openwrt +++ b/target/linux/generic/files/fs/yaffs2/NOTE.openwrt @@ -1,4 +1,4 @@ -The yaffs2 source has been fetched from the yaffs2 CVS tree. +The yaffs2 source has been fetched from the yaffs2 GIT tree. -URL: cvs.aleph1.co.uk -Version: 2009-09-24 +URL: git://www.aleph1.co.uk/yaffs2 +Version: 7396445d7d0d13469b9505791114b9dc6b76ffe4 (2010-10-20) diff --git a/target/linux/generic/files/fs/yaffs2/devextras.h b/target/linux/generic/files/fs/yaffs2/devextras.h index 7df46dc292..ce30c820d9 100644 --- a/target/linux/generic/files/fs/yaffs2/devextras.h +++ b/target/linux/generic/files/fs/yaffs2/devextras.h @@ -1,7 +1,7 @@ /* * YAFFS: Yet another Flash File System . A NAND-flash specific file system. * - * Copyright (C) 2002-2007 Aleph One Ltd. + * Copyright (C) 2002-2010 Aleph One Ltd. * for Toby Churchill Ltd and Brightstar Engineering * * Created by Charles Manning <charles@aleph1.co.uk> @@ -24,6 +24,8 @@ #define __EXTRAS_H__ +#include "yportenv.h" + #if !(defined __KERNEL__) /* Definition of types */ @@ -33,103 +35,6 @@ typedef unsigned __u32; #endif -/* - * This is a simple doubly linked list implementation that matches the - * way the Linux kernel doubly linked list implementation works. - */ - -struct ylist_head { - struct ylist_head *next; /* next in chain */ - struct ylist_head *prev; /* previous in chain */ -}; - - -/* Initialise a static list */ -#define YLIST_HEAD(name) \ -struct ylist_head name = { &(name), &(name)} - - - -/* Initialise a list head to an empty list */ -#define YINIT_LIST_HEAD(p) \ -do { \ - (p)->next = (p);\ - (p)->prev = (p); \ -} while (0) - - -/* Add an element to a list */ -static __inline__ void ylist_add(struct ylist_head *newEntry, - struct ylist_head *list) -{ - struct ylist_head *listNext = list->next; - - list->next = newEntry; - newEntry->prev = list; - newEntry->next = listNext; - listNext->prev = newEntry; - -} - -static __inline__ void ylist_add_tail(struct ylist_head *newEntry, - struct ylist_head *list) -{ - struct ylist_head *listPrev = list->prev; - - list->prev = newEntry; - newEntry->next = list; - newEntry->prev = listPrev; - listPrev->next = newEntry; - -} - - -/* Take an element out of its current list, with or without - * reinitialising the links.of the entry*/ -static __inline__ void ylist_del(struct ylist_head *entry) -{ - struct ylist_head *listNext = entry->next; - struct ylist_head *listPrev = entry->prev; - - listNext->prev = listPrev; - listPrev->next = listNext; - -} - -static __inline__ void ylist_del_init(struct ylist_head *entry) -{ - ylist_del(entry); - entry->next = entry->prev = entry; -} - - -/* Test if the list is empty */ -static __inline__ int ylist_empty(struct ylist_head *entry) -{ - return (entry->next == entry); -} - - -/* ylist_entry takes a pointer to a list entry and offsets it to that - * we can find a pointer to the object it is embedded in. - */ - - -#define ylist_entry(entry, type, member) \ - ((type *)((char *)(entry)-(unsigned long)(&((type *)NULL)->member))) - - -/* ylist_for_each and list_for_each_safe iterate over lists. - * ylist_for_each_safe uses temporary storage to make the list delete safe - */ - -#define ylist_for_each(itervar, list) \ - for (itervar = (list)->next; itervar != (list); itervar = itervar->next) - -#define ylist_for_each_safe(itervar, saveVar, list) \ - for (itervar = (list)->next, saveVar = (list)->next->next; \ - itervar != (list); itervar = saveVar, saveVar = saveVar->next) - #if !(defined __KERNEL__) diff --git a/target/linux/generic/files/fs/yaffs2/moduleconfig.h b/target/linux/generic/files/fs/yaffs2/moduleconfig.h index a344baf372..4b4d6424cd 100644 --- a/target/linux/generic/files/fs/yaffs2/moduleconfig.h +++ b/target/linux/generic/files/fs/yaffs2/moduleconfig.h @@ -1,7 +1,7 @@ /* * YAFFS: Yet another Flash File System . A NAND-flash specific file system. * - * Copyright (C) 2002-2007 Aleph One Ltd. + * Copyright (C) 2002-2010 Aleph One Ltd. * for Toby Churchill Ltd and Brightstar Engineering * * Created by Martin Fouts <Martin.Fouts@palmsource.com> @@ -29,25 +29,46 @@ /* Meaning: Yaffs does its own ECC, rather than using MTD ECC */ /* #define CONFIG_YAFFS_DOES_ECC */ +/* Default: Selected */ +/* Meaning: Yaffs does its own ECC on tags for packed tags rather than use mtd */ +#define CONFIG_YAFFS_DOES_TAGS_ECC + /* Default: Not selected */ /* Meaning: ECC byte order is 'wrong'. Only meaningful if */ /* CONFIG_YAFFS_DOES_ECC is set */ /* #define CONFIG_YAFFS_ECC_WRONG_ORDER */ -/* Default: Selected */ -/* Meaning: Disables testing whether chunks are erased before writing to them*/ -#define CONFIG_YAFFS_DISABLE_CHUNK_ERASED_CHECK +/* Default: Not selected */ +/* Meaning: Always test whether chunks are erased before writing to them. + Use during mtd debugging and init. */ +/* #define CONFIG_YAFFS_ALWAYS_CHECK_CHUNK_ERASED */ + +/* Default: Not Selected */ +/* Meaning: At mount automatically empty all files from lost and found. */ +/* This is done to fix an old problem where rmdir was not checking for an */ +/* empty directory. This can also be achieved with a mount option. */ +#define CONFIG_YAFFS_EMPTY_LOST_AND_FOUND /* Default: Selected */ /* Meaning: Cache short names, taking more RAM, but faster look-ups */ #define CONFIG_YAFFS_SHORT_NAMES_IN_RAM -/* Default: 10 */ -/* Meaning: set the count of blocks to reserve for checkpointing */ -#define CONFIG_YAFFS_CHECKPOINT_RESERVED_BLOCKS 10 +/* Default: Unselected */ +/* Meaning: Select to disable block refreshing. */ +/* Block Refreshing periodically rewrites the oldest block. */ +/* #define CONFIG_DISABLE_BLOCK_REFRESHING */ + +/* Default: Unselected */ +/* Meaning: Select to disable background processing */ +/* #define CONFIG_DISABLE_BACKGROUND */ + + +/* Default: Selected */ +/* Meaning: Enable XATTR support */ +#define CONFIG_YAFFS_XATTR /* -Older-style on-NAND data format has a "pageStatus" byte to record +Older-style on-NAND data format has a "page_status" byte to record chunk/page state. This byte is zeroed when the page is discarded. Choose this option if you have existing on-NAND data in this format that you need to continue to support. New data written also uses the @@ -57,7 +78,7 @@ adjusted to use the older-style format. See notes on tags formats and MTD versions in yaffs_mtdif1.c. */ /* Default: Not selected */ -/* Meaning: Use older-style on-NAND data format with pageStatus byte */ +/* Meaning: Use older-style on-NAND data format with page_status byte */ /* #define CONFIG_YAFFS_9BYTE_TAGS */ #endif /* YAFFS_OUT_OF_TREE */ diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_allocator.c b/target/linux/generic/files/fs/yaffs2/yaffs_allocator.c new file mode 100644 index 0000000000..c0513d54ec --- /dev/null +++ b/target/linux/generic/files/fs/yaffs2/yaffs_allocator.c @@ -0,0 +1,409 @@ +/* + * YAFFS: Yet another Flash File System . A NAND-flash specific file system. + * + * Copyright (C) 2002-2010 Aleph One Ltd. + * for Toby Churchill Ltd and Brightstar Engineering + * + * Created by Charles Manning <charles@aleph1.co.uk> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License version 2.1 as + * published by the Free Software Foundation. + * + * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL. + */ + + +#include "yaffs_allocator.h" +#include "yaffs_guts.h" +#include "yaffs_trace.h" +#include "yportenv.h" + +#ifdef CONFIG_YAFFS_YMALLOC_ALLOCATOR + +void yaffs_deinit_raw_tnodes_and_objs(yaffs_dev_t *dev) +{ + dev = dev; +} + +void yaffs_init_raw_tnodes_and_objs(yaffs_dev_t *dev) +{ + dev = dev; +} + +yaffs_tnode_t *yaffs_alloc_raw_tnode(yaffs_dev_t *dev) +{ + return (yaffs_tnode_t *)YMALLOC(dev->tnode_size); +} + +void yaffs_free_raw_tnode(yaffs_dev_t *dev, yaffs_tnode_t *tn) +{ + dev = dev; + YFREE(tn); +} + +void yaffs_init_raw_objs(yaffs_dev_t *dev) +{ + dev = dev; +} + +void yaffs_deinit_raw_objs(yaffs_dev_t *dev) +{ + dev = dev; +} + +yaffs_obj_t *yaffs_alloc_raw_obj(yaffs_dev_t *dev) +{ + dev = dev; + return (yaffs_obj_t *) YMALLOC(sizeof(yaffs_obj_t)); +} + + +void yaffs_free_raw_obj(yaffs_dev_t *dev, yaffs_obj_t *obj) +{ + + dev = dev; + YFREE(obj); +} + +#else + +struct yaffs_tnode_list { + struct yaffs_tnode_list *next; + yaffs_tnode_t *tnodes; +}; + +typedef struct yaffs_tnode_list yaffs_tnodelist_t; + +struct yaffs_obj_tList_struct { + yaffs_obj_t *objects; + struct yaffs_obj_tList_struct *next; +}; + +typedef struct yaffs_obj_tList_struct yaffs_obj_tList; + + +struct yaffs_AllocatorStruct { + int n_tnodesCreated; + yaffs_tnode_t *freeTnodes; + int nFreeTnodes; + yaffs_tnodelist_t *allocatedTnodeList; + + int n_objCreated; + yaffs_obj_t *freeObjects; + int nFreeObjects; + + yaffs_obj_tList *allocatedObjectList; +}; + +typedef struct yaffs_AllocatorStruct yaffs_Allocator; + + +static void yaffs_deinit_raw_tnodes(yaffs_dev_t *dev) +{ + + yaffs_Allocator *allocator = (yaffs_Allocator *)dev->allocator; + + yaffs_tnodelist_t *tmp; + + if(!allocator){ + YBUG(); + return; + } + + while (allocator->allocatedTnodeList) { + tmp = allocator->allocatedTnodeList->next; + + YFREE(allocator->allocatedTnodeList->tnodes); + YFREE(allocator->allocatedTnodeList); + allocator->allocatedTnodeList = tmp; + + } + + allocator->freeTnodes = NULL; + allocator->nFreeTnodes = 0; + allocator->n_tnodesCreated = 0; +} + +static void yaffs_init_raw_tnodes(yaffs_dev_t *dev) +{ + yaffs_Allocator *allocator = dev->allocator; + + if(allocator){ + allocator->allocatedTnodeList = NULL; + allocator->freeTnodes = NULL; + allocator->nFreeTnodes = 0; + allocator->n_tnodesCreated = 0; + } else + YBUG(); +} + +static int yaffs_create_tnodes(yaffs_dev_t *dev, int n_tnodes) +{ + yaffs_Allocator *allocator = (yaffs_Allocator *)dev->allocator; + int i; + yaffs_tnode_t *newTnodes; + __u8 *mem; + yaffs_tnode_t *curr; + yaffs_tnode_t *next; + yaffs_tnodelist_t *tnl; + + if(!allocator){ + YBUG(); + return YAFFS_FAIL; + } + + if (n_tnodes < 1) + return YAFFS_OK; + + + /* make these things */ + + newTnodes = YMALLOC(n_tnodes * dev->tnode_size); + mem = (__u8 *)newTnodes; + + if (!newTnodes) { + T(YAFFS_TRACE_ERROR, + (TSTR("yaffs: Could not allocate Tnodes" TENDSTR))); + return YAFFS_FAIL; + } + + /* New hookup for wide tnodes */ + for (i = 0; i < n_tnodes - 1; i++) { + curr = (yaffs_tnode_t *) &mem[i * dev->tnode_size]; + next = (yaffs_tnode_t *) &mem[(i+1) * dev->tnode_size]; + curr->internal[0] = next; + } + + curr = (yaffs_tnode_t *) &mem[(n_tnodes - 1) * dev->tnode_size]; + curr->internal[0] = allocator->freeTnodes; + allocator->freeTnodes = (yaffs_tnode_t *)mem; + + allocator->nFreeTnodes += n_tnodes; + allocator->n_tnodesCreated += n_tnodes; + + /* Now add this bunch of tnodes to a list for freeing up. + * NB If we can't add this to the management list it isn't fatal + * but it just means we can't free this bunch of tnodes later. + */ + + tnl = YMALLOC(sizeof(yaffs_tnodelist_t)); + if (!tnl) { + T(YAFFS_TRACE_ERROR, + (TSTR + ("yaffs: Could not add tnodes to management list" TENDSTR))); + return YAFFS_FAIL; + } else { + tnl->tnodes = newTnodes; + tnl->next = allocator->allocatedTnodeList; + allocator->allocatedTnodeList = tnl; + } + + T(YAFFS_TRACE_ALLOCATE, (TSTR("yaffs: Tnodes added" TENDSTR))); + + return YAFFS_OK; +} + + +yaffs_tnode_t *yaffs_alloc_raw_tnode(yaffs_dev_t *dev) +{ + yaffs_Allocator *allocator = (yaffs_Allocator *)dev->allocator; + yaffs_tnode_t *tn = NULL; + + if(!allocator){ + YBUG(); + return NULL; + } + + /* If there are none left make more */ + if (!allocator->freeTnodes) + yaffs_create_tnodes(dev, YAFFS_ALLOCATION_NTNODES); + + if (allocator->freeTnodes) { + tn = allocator->freeTnodes; + allocator->freeTnodes = allocator->freeTnodes->internal[0]; + allocator->nFreeTnodes--; + } + + return tn; +} + +/* FreeTnode frees up a tnode and puts it back on the free list */ +void yaffs_free_raw_tnode(yaffs_dev_t *dev, yaffs_tnode_t *tn) +{ + yaffs_Allocator *allocator = dev->allocator; + + if(!allocator){ + YBUG(); + return; + } + + if (tn) { + tn->internal[0] = allocator->freeTnodes; + allocator->freeTnodes = tn; + allocator->nFreeTnodes++; + } + dev->checkpoint_blocks_required = 0; /* force recalculation*/ +} + + + +static void yaffs_init_raw_objs(yaffs_dev_t *dev) +{ + yaffs_Allocator *allocator = dev->allocator; + + if(allocator) { + allocator->allocatedObjectList = NULL; + allocator->freeObjects = NULL; + allocator->nFreeObjects = 0; + } else + YBUG(); +} + +static void yaffs_deinit_raw_objs(yaffs_dev_t *dev) +{ + yaffs_Allocator *allocator = dev->allocator; + yaffs_obj_tList *tmp; + + if(!allocator){ + YBUG(); + return; + } + + while (allocator->allocatedObjectList) { + tmp = allocator->allocatedObjectList->next; + YFREE(allocator->allocatedObjectList->objects); + YFREE(allocator->allocatedObjectList); + + allocator->allocatedObjectList = tmp; + } + + allocator->freeObjects = NULL; + allocator->nFreeObjects = 0; + allocator->n_objCreated = 0; +} + + +static int yaffs_create_free_objs(yaffs_dev_t *dev, int n_obj) +{ + yaffs_Allocator *allocator = dev->allocator; + + int i; + yaffs_obj_t *newObjects; + yaffs_obj_tList *list; + + if(!allocator){ + YBUG(); + return YAFFS_FAIL; + } + + if (n_obj < 1) + return YAFFS_OK; + + /* make these things */ + newObjects = YMALLOC(n_obj * sizeof(yaffs_obj_t)); + list = YMALLOC(sizeof(yaffs_obj_tList)); + + if (!newObjects || !list) { + if (newObjects){ + YFREE(newObjects); + newObjects = NULL; + } + if (list){ + YFREE(list); + list = NULL; + } + T(YAFFS_TRACE_ALLOCATE, + (TSTR("yaffs: Could not allocate more objects" TENDSTR))); + return YAFFS_FAIL; + } + + /* Hook them into the free list */ + for (i = 0; i < n_obj - 1; i++) { + newObjects[i].siblings.next = + (struct ylist_head *)(&newObjects[i + 1]); + } + + newObjects[n_obj - 1].siblings.next = (void *)allocator->freeObjects; + allocator->freeObjects = newObjects; + allocator->nFreeObjects += n_obj; + allocator->n_objCreated += n_obj; + + /* Now add this bunch of Objects to a list for freeing up. */ + + list->objects = newObjects; + list->next = allocator->allocatedObjectList; + allocator->allocatedObjectList = list; + + return YAFFS_OK; +} + +yaffs_obj_t *yaffs_alloc_raw_obj(yaffs_dev_t *dev) +{ + yaffs_obj_t *obj = NULL; + yaffs_Allocator *allocator = dev->allocator; + + if(!allocator) { + YBUG(); + return obj; + } + + /* If there are none left make more */ + if (!allocator->freeObjects) + yaffs_create_free_objs(dev, YAFFS_ALLOCATION_NOBJECTS); + + if (allocator->freeObjects) { + obj = allocator->freeObjects; + allocator->freeObjects = + (yaffs_obj_t *) (allocator->freeObjects->siblings.next); + allocator->nFreeObjects--; + } + + return obj; +} + + +void yaffs_free_raw_obj(yaffs_dev_t *dev, yaffs_obj_t *obj) +{ + + yaffs_Allocator *allocator = dev->allocator; + + if(!allocator) + YBUG(); + else { + /* Link into the free list. */ + obj->siblings.next = (struct ylist_head *)(allocator->freeObjects); + allocator->freeObjects = obj; + allocator->nFreeObjects++; + } +} + +void yaffs_deinit_raw_tnodes_and_objs(yaffs_dev_t *dev) +{ + if(dev->allocator){ + yaffs_deinit_raw_tnodes(dev); + yaffs_deinit_raw_objs(dev); + + YFREE(dev->allocator); + dev->allocator=NULL; + } else + YBUG(); +} + +void yaffs_init_raw_tnodes_and_objs(yaffs_dev_t *dev) +{ + yaffs_Allocator *allocator; + + if(!dev->allocator){ + allocator = YMALLOC(sizeof(yaffs_Allocator)); + if(allocator){ + dev->allocator = allocator; + yaffs_init_raw_tnodes(dev); + yaffs_init_raw_objs(dev); + } + } else + YBUG(); +} + + +#endif diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_allocator.h b/target/linux/generic/files/fs/yaffs2/yaffs_allocator.h new file mode 100644 index 0000000000..777f3b01c4 --- /dev/null +++ b/target/linux/generic/files/fs/yaffs2/yaffs_allocator.h @@ -0,0 +1,30 @@ +/* + * YAFFS: Yet another Flash File System . A NAND-flash specific file system. + * + * Copyright (C) 2002-2010 Aleph One Ltd. + * for Toby Churchill Ltd and Brightstar Engineering + * + * Created by Charles Manning <charles@aleph1.co.uk> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License version 2.1 as + * published by the Free Software Foundation. + * + * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL. + */ + +#ifndef __YAFFS_ALLOCATOR_H__ +#define __YAFFS_ALLOCATOR_H__ + +#include "yaffs_guts.h" + +void yaffs_init_raw_tnodes_and_objs(yaffs_dev_t *dev); +void yaffs_deinit_raw_tnodes_and_objs(yaffs_dev_t *dev); + +yaffs_tnode_t *yaffs_alloc_raw_tnode(yaffs_dev_t *dev); +void yaffs_free_raw_tnode(yaffs_dev_t *dev, yaffs_tnode_t *tn); + +yaffs_obj_t *yaffs_alloc_raw_obj(yaffs_dev_t *dev); +void yaffs_free_raw_obj(yaffs_dev_t *dev, yaffs_obj_t *obj); + +#endif diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_bitmap.c b/target/linux/generic/files/fs/yaffs2/yaffs_bitmap.c new file mode 100644 index 0000000000..1769e9b47e --- /dev/null +++ b/target/linux/generic/files/fs/yaffs2/yaffs_bitmap.c @@ -0,0 +1,105 @@ +/* + * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. + * + * Copyright (C) 2002-2010 Aleph One Ltd. + * for Toby Churchill Ltd and Brightstar Engineering + * + * Created by Charles Manning <charles@aleph1.co.uk> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include "yaffs_bitmap.h" +#include "yaffs_trace.h" +/* + * Chunk bitmap manipulations + */ + +static Y_INLINE __u8 *yaffs_BlockBits(yaffs_dev_t *dev, int blk) +{ + if (blk < dev->internal_start_block || blk > dev->internal_end_block) { + T(YAFFS_TRACE_ERROR, + (TSTR("**>> yaffs: BlockBits block %d is not valid" TENDSTR), + blk)); + YBUG(); + } + return dev->chunk_bits + + (dev->chunk_bit_stride * (blk - dev->internal_start_block)); +} + +void yaffs_verify_chunk_bit_id(yaffs_dev_t *dev, int blk, int chunk) +{ + if (blk < dev->internal_start_block || blk > dev->internal_end_block || + chunk < 0 || chunk >= dev->param.chunks_per_block) { + T(YAFFS_TRACE_ERROR, + (TSTR("**>> yaffs: Chunk Id (%d:%d) invalid"TENDSTR), + blk, chunk)); + YBUG(); + } +} + +void yaffs_clear_chunk_bits(yaffs_dev_t *dev, int blk) +{ + __u8 *blkBits = yaffs_BlockBits(dev, blk); + + memset(blkBits, 0, dev->chunk_bit_stride); +} + +void yaffs_clear_chunk_bit(yaffs_dev_t *dev, int blk, int chunk) +{ + __u8 *blkBits = yaffs_BlockBits(dev, blk); + + yaffs_verify_chunk_bit_id(dev, blk, chunk); + + blkBits[chunk / 8] &= ~(1 << (chunk & 7)); +} + +void yaffs_set_chunk_bit(yaffs_dev_t *dev, int blk, int chunk) +{ + __u8 *blkBits = yaffs_BlockBits(dev, blk); + + yaffs_verify_chunk_bit_id(dev, blk, chunk); + + blkBits[chunk / 8] |= (1 << (chunk & 7)); +} + +int yaffs_check_chunk_bit(yaffs_dev_t *dev, int blk, int chunk) +{ + __u8 *blkBits = yaffs_BlockBits(dev, blk); + yaffs_verify_chunk_bit_id(dev, blk, chunk); + + return (blkBits[chunk / 8] & (1 << (chunk & 7))) ? 1 : 0; +} + +int yaffs_still_some_chunks(yaffs_dev_t *dev, int blk) +{ + __u8 *blkBits = yaffs_BlockBits(dev, blk); + int i; + for (i = 0; i < dev->chunk_bit_stride; i++) { + if (*blkBits) + return 1; + blkBits++; + } + return 0; +} + +int yaffs_count_chunk_bits(yaffs_dev_t *dev, int blk) +{ + __u8 *blkBits = yaffs_BlockBits(dev, blk); + int i; + int n = 0; + for (i = 0; i < dev->chunk_bit_stride; i++) { + __u8 x = *blkBits; + while (x) { + if (x & 1) + n++; + x >>= 1; + } + + blkBits++; + } + return n; +} + diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_bitmap.h b/target/linux/generic/files/fs/yaffs2/yaffs_bitmap.h new file mode 100644 index 0000000000..c11ca2fa68 --- /dev/null +++ b/target/linux/generic/files/fs/yaffs2/yaffs_bitmap.h @@ -0,0 +1,31 @@ +/* + * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. + * + * Copyright (C) 2002-2010 Aleph One Ltd. + * for Toby Churchill Ltd and Brightstar Engineering + * + * Created by Charles Manning <charles@aleph1.co.uk> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +/* + * Chunk bitmap manipulations + */ + +#ifndef __YAFFS_BITMAP_H__ +#define __YAFFS_BITMAP_H__ + +#include "yaffs_guts.h" + +void yaffs_verify_chunk_bit_id(yaffs_dev_t *dev, int blk, int chunk); +void yaffs_clear_chunk_bits(yaffs_dev_t *dev, int blk); +void yaffs_clear_chunk_bit(yaffs_dev_t *dev, int blk, int chunk); +void yaffs_set_chunk_bit(yaffs_dev_t *dev, int blk, int chunk); +int yaffs_check_chunk_bit(yaffs_dev_t *dev, int blk, int chunk); +int yaffs_still_some_chunks(yaffs_dev_t *dev, int blk); +int yaffs_count_chunk_bits(yaffs_dev_t *dev, int blk); + +#endif diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_checkptrw.c b/target/linux/generic/files/fs/yaffs2/yaffs_checkptrw.c index 40d792366f..d46f5634ac 100644 --- a/target/linux/generic/files/fs/yaffs2/yaffs_checkptrw.c +++ b/target/linux/generic/files/fs/yaffs2/yaffs_checkptrw.c @@ -1,7 +1,7 @@ /* * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. * - * Copyright (C) 2002-2007 Aleph One Ltd. + * Copyright (C) 2002-2010 Aleph One Ltd. * for Toby Churchill Ltd and Brightstar Engineering * * Created by Charles Manning <charles@aleph1.co.uk> @@ -11,16 +11,12 @@ * published by the Free Software Foundation. */ -const char *yaffs_checkptrw_c_version = - "$Id: yaffs_checkptrw.c,v 1.18 2009-03-06 17:20:49 wookey Exp $"; - - #include "yaffs_checkptrw.h" #include "yaffs_getblockinfo.h" -static int yaffs_CheckpointSpaceOk(yaffs_Device *dev) +static int yaffs2_checkpt_space_ok(yaffs_dev_t *dev) { - int blocksAvailable = dev->nErasedBlocks - dev->nReservedBlocks; + int blocksAvailable = dev->n_erased_blocks - dev->param.n_reserved_blocks; T(YAFFS_TRACE_CHECKPOINT, (TSTR("checkpt blocks available = %d" TENDSTR), @@ -30,53 +26,56 @@ static int yaffs_CheckpointSpaceOk(yaffs_Device *dev) } -static int yaffs_CheckpointErase(yaffs_Device *dev) +static int yaffs_checkpt_erase(yaffs_dev_t *dev) { int i; - if (!dev->eraseBlockInNAND) + if (!dev->param.erase_fn) return 0; T(YAFFS_TRACE_CHECKPOINT, (TSTR("checking blocks %d to %d"TENDSTR), - dev->internalStartBlock, dev->internalEndBlock)); + dev->internal_start_block, dev->internal_end_block)); - for (i = dev->internalStartBlock; i <= dev->internalEndBlock; i++) { - yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, i); - if (bi->blockState == YAFFS_BLOCK_STATE_CHECKPOINT) { + for (i = dev->internal_start_block; i <= dev->internal_end_block; i++) { + yaffs_block_info_t *bi = yaffs_get_block_info(dev, i); + if (bi->block_state == YAFFS_BLOCK_STATE_CHECKPOINT) { T(YAFFS_TRACE_CHECKPOINT, (TSTR("erasing checkpt block %d"TENDSTR), i)); - if (dev->eraseBlockInNAND(dev, i - dev->blockOffset /* realign */)) { - bi->blockState = YAFFS_BLOCK_STATE_EMPTY; - dev->nErasedBlocks++; - dev->nFreeChunks += dev->nChunksPerBlock; + + dev->n_erasures++; + + if (dev->param.erase_fn(dev, i - dev->block_offset /* realign */)) { + bi->block_state = YAFFS_BLOCK_STATE_EMPTY; + dev->n_erased_blocks++; + dev->n_free_chunks += dev->param.chunks_per_block; } else { - dev->markNANDBlockBad(dev, i); - bi->blockState = YAFFS_BLOCK_STATE_DEAD; + dev->param.bad_block_fn(dev, i); + bi->block_state = YAFFS_BLOCK_STATE_DEAD; } } } - dev->blocksInCheckpoint = 0; + dev->blocks_in_checkpt = 0; return 1; } -static void yaffs_CheckpointFindNextErasedBlock(yaffs_Device *dev) +static void yaffs2_checkpt_find_erased_block(yaffs_dev_t *dev) { int i; - int blocksAvailable = dev->nErasedBlocks - dev->nReservedBlocks; + int blocksAvailable = dev->n_erased_blocks - dev->param.n_reserved_blocks; T(YAFFS_TRACE_CHECKPOINT, (TSTR("allocating checkpt block: erased %d reserved %d avail %d next %d "TENDSTR), - dev->nErasedBlocks, dev->nReservedBlocks, blocksAvailable, dev->checkpointNextBlock)); + dev->n_erased_blocks, dev->param.n_reserved_blocks, blocksAvailable, dev->checkpt_next_block)); - if (dev->checkpointNextBlock >= 0 && - dev->checkpointNextBlock <= dev->internalEndBlock && + if (dev->checkpt_next_block >= 0 && + dev->checkpt_next_block <= dev->internal_end_block && blocksAvailable > 0) { - for (i = dev->checkpointNextBlock; i <= dev->internalEndBlock; i++) { - yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, i); - if (bi->blockState == YAFFS_BLOCK_STATE_EMPTY) { - dev->checkpointNextBlock = i + 1; - dev->checkpointCurrentBlock = i; + for (i = dev->checkpt_next_block; i <= dev->internal_end_block; i++) { + yaffs_block_info_t *bi = yaffs_get_block_info(dev, i); + if (bi->block_state == YAFFS_BLOCK_STATE_EMPTY) { + dev->checkpt_next_block = i + 1; + dev->checkpt_cur_block = i; T(YAFFS_TRACE_CHECKPOINT, (TSTR("allocating checkpt block %d"TENDSTR), i)); return; } @@ -84,34 +83,34 @@ static void yaffs_CheckpointFindNextErasedBlock(yaffs_Device *dev) } T(YAFFS_TRACE_CHECKPOINT, (TSTR("out of checkpt blocks"TENDSTR))); - dev->checkpointNextBlock = -1; - dev->checkpointCurrentBlock = -1; + dev->checkpt_next_block = -1; + dev->checkpt_cur_block = -1; } -static void yaffs_CheckpointFindNextCheckpointBlock(yaffs_Device *dev) +static void yaffs2_checkpt_find_block(yaffs_dev_t *dev) { int i; - yaffs_ExtendedTags tags; + yaffs_ext_tags tags; T(YAFFS_TRACE_CHECKPOINT, (TSTR("find next checkpt block: start: blocks %d next %d" TENDSTR), - dev->blocksInCheckpoint, dev->checkpointNextBlock)); + dev->blocks_in_checkpt, dev->checkpt_next_block)); - if (dev->blocksInCheckpoint < dev->checkpointMaxBlocks) - for (i = dev->checkpointNextBlock; i <= dev->internalEndBlock; i++) { - int chunk = i * dev->nChunksPerBlock; - int realignedChunk = chunk - dev->chunkOffset; + if (dev->blocks_in_checkpt < dev->checkpt_max_blocks) + for (i = dev->checkpt_next_block; i <= dev->internal_end_block; i++) { + int chunk = i * dev->param.chunks_per_block; + int realignedChunk = chunk - dev->chunk_offset; - dev->readChunkWithTagsFromNAND(dev, realignedChunk, + dev->param.read_chunk_tags_fn(dev, realignedChunk, NULL, &tags); T(YAFFS_TRACE_CHECKPOINT, (TSTR("find next checkpt block: search: block %d oid %d seq %d eccr %d" TENDSTR), - i, tags.objectId, tags.sequenceNumber, tags.eccResult)); + i, tags.obj_id, tags.seq_number, tags.ecc_result)); - if (tags.sequenceNumber == YAFFS_SEQUENCE_CHECKPOINT_DATA) { + if (tags.seq_number == YAFFS_SEQUENCE_CHECKPOINT_DATA) { /* Right kind of block */ - dev->checkpointNextBlock = tags.objectId; - dev->checkpointCurrentBlock = i; - dev->checkpointBlockList[dev->blocksInCheckpoint] = i; - dev->blocksInCheckpoint++; + dev->checkpt_next_block = tags.obj_id; + dev->checkpt_cur_block = i; + dev->checkpt_block_list[dev->blocks_in_checkpt] = i; + dev->blocks_in_checkpt++; T(YAFFS_TRACE_CHECKPOINT, (TSTR("found checkpt block %d"TENDSTR), i)); return; } @@ -119,122 +118,127 @@ static void yaffs_CheckpointFindNextCheckpointBlock(yaffs_Device *dev) T(YAFFS_TRACE_CHECKPOINT, (TSTR("found no more checkpt blocks"TENDSTR))); - dev->checkpointNextBlock = -1; - dev->checkpointCurrentBlock = -1; + dev->checkpt_next_block = -1; + dev->checkpt_cur_block = -1; } -int yaffs_CheckpointOpen(yaffs_Device *dev, int forWriting) +int yaffs2_checkpt_open(yaffs_dev_t *dev, int forWriting) { + + dev->checkpt_open_write = forWriting; + /* Got the functions we need? */ - if (!dev->writeChunkWithTagsToNAND || - !dev->readChunkWithTagsFromNAND || - !dev->eraseBlockInNAND || - !dev->markNANDBlockBad) + if (!dev->param.write_chunk_tags_fn || + !dev->param.read_chunk_tags_fn || + !dev->param.erase_fn || + !dev->param.bad_block_fn) return 0; - if (forWriting && !yaffs_CheckpointSpaceOk(dev)) + if (forWriting && !yaffs2_checkpt_space_ok(dev)) return 0; - if (!dev->checkpointBuffer) - dev->checkpointBuffer = YMALLOC_DMA(dev->totalBytesPerChunk); - if (!dev->checkpointBuffer) + if (!dev->checkpt_buffer) + dev->checkpt_buffer = YMALLOC_DMA(dev->param.total_bytes_per_chunk); + if (!dev->checkpt_buffer) return 0; - dev->checkpointPageSequence = 0; - - dev->checkpointOpenForWrite = forWriting; - - dev->checkpointByteCount = 0; - dev->checkpointSum = 0; - dev->checkpointXor = 0; - dev->checkpointCurrentBlock = -1; - dev->checkpointCurrentChunk = -1; - dev->checkpointNextBlock = dev->internalStartBlock; + dev->checkpt_page_seq = 0; + dev->checkpt_byte_count = 0; + dev->checkpt_sum = 0; + dev->checkpt_xor = 0; + dev->checkpt_cur_block = -1; + dev->checkpt_cur_chunk = -1; + dev->checkpt_next_block = dev->internal_start_block; /* Erase all the blocks in the checkpoint area */ if (forWriting) { - memset(dev->checkpointBuffer, 0, dev->nDataBytesPerChunk); - dev->checkpointByteOffset = 0; - return yaffs_CheckpointErase(dev); + memset(dev->checkpt_buffer, 0, dev->data_bytes_per_chunk); + dev->checkpt_byte_offs = 0; + return yaffs_checkpt_erase(dev); } else { int i; /* Set to a value that will kick off a read */ - dev->checkpointByteOffset = dev->nDataBytesPerChunk; + dev->checkpt_byte_offs = dev->data_bytes_per_chunk; /* A checkpoint block list of 1 checkpoint block per 16 block is (hopefully) * going to be way more than we need */ - dev->blocksInCheckpoint = 0; - dev->checkpointMaxBlocks = (dev->internalEndBlock - dev->internalStartBlock)/16 + 2; - dev->checkpointBlockList = YMALLOC(sizeof(int) * dev->checkpointMaxBlocks); - for (i = 0; i < dev->checkpointMaxBlocks; i++) - dev->checkpointBlockList[i] = -1; + dev->blocks_in_checkpt = 0; + dev->checkpt_max_blocks = (dev->internal_end_block - dev->internal_start_block)/16 + 2; + dev->checkpt_block_list = YMALLOC(sizeof(int) * dev->checkpt_max_blocks); + if(!dev->checkpt_block_list) + return 0; + + for (i = 0; i < dev->checkpt_max_blocks; i++) + dev->checkpt_block_list[i] = -1; } return 1; } -int yaffs_GetCheckpointSum(yaffs_Device *dev, __u32 *sum) +int yaffs2_get_checkpt_sum(yaffs_dev_t *dev, __u32 *sum) { __u32 compositeSum; - compositeSum = (dev->checkpointSum << 8) | (dev->checkpointXor & 0xFF); + compositeSum = (dev->checkpt_sum << 8) | (dev->checkpt_xor & 0xFF); *sum = compositeSum; return 1; } -static int yaffs_CheckpointFlushBuffer(yaffs_Device *dev) +static int yaffs2_checkpt_flush_buffer(yaffs_dev_t *dev) { int chunk; int realignedChunk; - yaffs_ExtendedTags tags; + yaffs_ext_tags tags; - if (dev->checkpointCurrentBlock < 0) { - yaffs_CheckpointFindNextErasedBlock(dev); - dev->checkpointCurrentChunk = 0; + if (dev->checkpt_cur_block < 0) { + yaffs2_checkpt_find_erased_block(dev); + dev->checkpt_cur_chunk = 0; } - if (dev->checkpointCurrentBlock < 0) + if (dev->checkpt_cur_block < 0) return 0; - tags.chunkDeleted = 0; - tags.objectId = dev->checkpointNextBlock; /* Hint to next place to look */ - tags.chunkId = dev->checkpointPageSequence + 1; - tags.sequenceNumber = YAFFS_SEQUENCE_CHECKPOINT_DATA; - tags.byteCount = dev->nDataBytesPerChunk; - if (dev->checkpointCurrentChunk == 0) { + tags.is_deleted = 0; + tags.obj_id = dev->checkpt_next_block; /* Hint to next place to look */ + tags.chunk_id = dev->checkpt_page_seq + 1; + tags.seq_number = YAFFS_SEQUENCE_CHECKPOINT_DATA; + tags.n_bytes = dev->data_bytes_per_chunk; + if (dev->checkpt_cur_chunk == 0) { /* First chunk we write for the block? Set block state to checkpoint */ - yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, dev->checkpointCurrentBlock); - bi->blockState = YAFFS_BLOCK_STATE_CHECKPOINT; - dev->blocksInCheckpoint++; + yaffs_block_info_t *bi = yaffs_get_block_info(dev, dev->checkpt_cur_block); + bi->block_state = YAFFS_BLOCK_STATE_CHECKPOINT; + dev->blocks_in_checkpt++; } - chunk = dev->checkpointCurrentBlock * dev->nChunksPerBlock + dev->checkpointCurrentChunk; + chunk = dev->checkpt_cur_block * dev->param.chunks_per_block + dev->checkpt_cur_chunk; T(YAFFS_TRACE_CHECKPOINT, (TSTR("checkpoint wite buffer nand %d(%d:%d) objid %d chId %d" TENDSTR), - chunk, dev->checkpointCurrentBlock, dev->checkpointCurrentChunk, tags.objectId, tags.chunkId)); - - realignedChunk = chunk - dev->chunkOffset; - - dev->writeChunkWithTagsToNAND(dev, realignedChunk, - dev->checkpointBuffer, &tags); - dev->checkpointByteOffset = 0; - dev->checkpointPageSequence++; - dev->checkpointCurrentChunk++; - if (dev->checkpointCurrentChunk >= dev->nChunksPerBlock) { - dev->checkpointCurrentChunk = 0; - dev->checkpointCurrentBlock = -1; + chunk, dev->checkpt_cur_block, dev->checkpt_cur_chunk, tags.obj_id, tags.chunk_id)); + + realignedChunk = chunk - dev->chunk_offset; + + dev->n_page_writes++; + + dev->param.write_chunk_tags_fn(dev, realignedChunk, + dev->checkpt_buffer, &tags); + dev->checkpt_byte_offs = 0; + dev->checkpt_page_seq++; + dev->checkpt_cur_chunk++; + if (dev->checkpt_cur_chunk >= dev->param.chunks_per_block) { + dev->checkpt_cur_chunk = 0; + dev->checkpt_cur_block = -1; } - memset(dev->checkpointBuffer, 0, dev->nDataBytesPerChunk); + memset(dev->checkpt_buffer, 0, dev->data_bytes_per_chunk); return 1; } -int yaffs_CheckpointWrite(yaffs_Device *dev, const void *data, int nBytes) +int yaffs2_checkpt_wr(yaffs_dev_t *dev, const void *data, int n_bytes) { int i = 0; int ok = 1; @@ -244,36 +248,36 @@ int yaffs_CheckpointWrite(yaffs_Device *dev, const void *data, int nBytes) - if (!dev->checkpointBuffer) + if (!dev->checkpt_buffer) return 0; - if (!dev->checkpointOpenForWrite) + if (!dev->checkpt_open_write) return -1; - while (i < nBytes && ok) { - dev->checkpointBuffer[dev->checkpointByteOffset] = *dataBytes; - dev->checkpointSum += *dataBytes; - dev->checkpointXor ^= *dataBytes; + while (i < n_bytes && ok) { + dev->checkpt_buffer[dev->checkpt_byte_offs] = *dataBytes; + dev->checkpt_sum += *dataBytes; + dev->checkpt_xor ^= *dataBytes; - dev->checkpointByteOffset++; + dev->checkpt_byte_offs++; i++; dataBytes++; - dev->checkpointByteCount++; + dev->checkpt_byte_count++; - if (dev->checkpointByteOffset < 0 || - dev->checkpointByteOffset >= dev->nDataBytesPerChunk) - ok = yaffs_CheckpointFlushBuffer(dev); + if (dev->checkpt_byte_offs < 0 || + dev->checkpt_byte_offs >= dev->data_bytes_per_chunk) + ok = yaffs2_checkpt_flush_buffer(dev); } return i; } -int yaffs_CheckpointRead(yaffs_Device *dev, void *data, int nBytes) +int yaffs2_checkpt_rd(yaffs_dev_t *dev, void *data, int n_bytes) { int i = 0; int ok = 1; - yaffs_ExtendedTags tags; + yaffs_ext_tags tags; int chunk; @@ -281,113 +285,116 @@ int yaffs_CheckpointRead(yaffs_Device *dev, void *data, int nBytes) __u8 *dataBytes = (__u8 *)data; - if (!dev->checkpointBuffer) + if (!dev->checkpt_buffer) return 0; - if (dev->checkpointOpenForWrite) + if (dev->checkpt_open_write) return -1; - while (i < nBytes && ok) { + while (i < n_bytes && ok) { - if (dev->checkpointByteOffset < 0 || - dev->checkpointByteOffset >= dev->nDataBytesPerChunk) { + if (dev->checkpt_byte_offs < 0 || + dev->checkpt_byte_offs >= dev->data_bytes_per_chunk) { - if (dev->checkpointCurrentBlock < 0) { - yaffs_CheckpointFindNextCheckpointBlock(dev); - dev->checkpointCurrentChunk = 0; + if (dev->checkpt_cur_block < 0) { + yaffs2_checkpt_find_block(dev); + dev->checkpt_cur_chunk = 0; } - if (dev->checkpointCurrentBlock < 0) + if (dev->checkpt_cur_block < 0) ok = 0; else { - chunk = dev->checkpointCurrentBlock * - dev->nChunksPerBlock + - dev->checkpointCurrentChunk; + chunk = dev->checkpt_cur_block * + dev->param.chunks_per_block + + dev->checkpt_cur_chunk; - realignedChunk = chunk - dev->chunkOffset; + realignedChunk = chunk - dev->chunk_offset; + + dev->n_page_reads++; /* read in the next chunk */ /* printf("read checkpoint page %d\n",dev->checkpointPage); */ - dev->readChunkWithTagsFromNAND(dev, + dev->param.read_chunk_tags_fn(dev, realignedChunk, - dev->checkpointBuffer, + dev->checkpt_buffer, &tags); - if (tags.chunkId != (dev->checkpointPageSequence + 1) || - tags.eccResult > YAFFS_ECC_RESULT_FIXED || - tags.sequenceNumber != YAFFS_SEQUENCE_CHECKPOINT_DATA) + if (tags.chunk_id != (dev->checkpt_page_seq + 1) || + tags.ecc_result > YAFFS_ECC_RESULT_FIXED || + tags.seq_number != YAFFS_SEQUENCE_CHECKPOINT_DATA) ok = 0; - dev->checkpointByteOffset = 0; - dev->checkpointPageSequence++; - dev->checkpointCurrentChunk++; + dev->checkpt_byte_offs = 0; + dev->checkpt_page_seq++; + dev->checkpt_cur_chunk++; - if (dev->checkpointCurrentChunk >= dev->nChunksPerBlock) - dev->checkpointCurrentBlock = -1; + if (dev->checkpt_cur_chunk >= dev->param.chunks_per_block) + dev->checkpt_cur_block = -1; } } if (ok) { - *dataBytes = dev->checkpointBuffer[dev->checkpointByteOffset]; - dev->checkpointSum += *dataBytes; - dev->checkpointXor ^= *dataBytes; - dev->checkpointByteOffset++; + *dataBytes = dev->checkpt_buffer[dev->checkpt_byte_offs]; + dev->checkpt_sum += *dataBytes; + dev->checkpt_xor ^= *dataBytes; + dev->checkpt_byte_offs++; i++; dataBytes++; - dev->checkpointByteCount++; + dev->checkpt_byte_count++; } } return i; } -int yaffs_CheckpointClose(yaffs_Device *dev) +int yaffs_checkpt_close(yaffs_dev_t *dev) { - if (dev->checkpointOpenForWrite) { - if (dev->checkpointByteOffset != 0) - yaffs_CheckpointFlushBuffer(dev); - } else { + if (dev->checkpt_open_write) { + if (dev->checkpt_byte_offs != 0) + yaffs2_checkpt_flush_buffer(dev); + } else if(dev->checkpt_block_list){ int i; - for (i = 0; i < dev->blocksInCheckpoint && dev->checkpointBlockList[i] >= 0; i++) { - yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, dev->checkpointBlockList[i]); - if (bi->blockState == YAFFS_BLOCK_STATE_EMPTY) - bi->blockState = YAFFS_BLOCK_STATE_CHECKPOINT; + for (i = 0; i < dev->blocks_in_checkpt && dev->checkpt_block_list[i] >= 0; i++) { + int blk = dev->checkpt_block_list[i]; + yaffs_block_info_t *bi = NULL; + if( dev->internal_start_block <= blk && blk <= dev->internal_end_block) + bi = yaffs_get_block_info(dev, blk); + if (bi && bi->block_state == YAFFS_BLOCK_STATE_EMPTY) + bi->block_state = YAFFS_BLOCK_STATE_CHECKPOINT; else { /* Todo this looks odd... */ } } - YFREE(dev->checkpointBlockList); - dev->checkpointBlockList = NULL; + YFREE(dev->checkpt_block_list); + dev->checkpt_block_list = NULL; } - dev->nFreeChunks -= dev->blocksInCheckpoint * dev->nChunksPerBlock; - dev->nErasedBlocks -= dev->blocksInCheckpoint; + dev->n_free_chunks -= dev->blocks_in_checkpt * dev->param.chunks_per_block; + dev->n_erased_blocks -= dev->blocks_in_checkpt; T(YAFFS_TRACE_CHECKPOINT, (TSTR("checkpoint byte count %d" TENDSTR), - dev->checkpointByteCount)); + dev->checkpt_byte_count)); - if (dev->checkpointBuffer) { + if (dev->checkpt_buffer) { /* free the buffer */ - YFREE(dev->checkpointBuffer); - dev->checkpointBuffer = NULL; + YFREE(dev->checkpt_buffer); + dev->checkpt_buffer = NULL; return 1; } else return 0; } -int yaffs_CheckpointInvalidateStream(yaffs_Device *dev) +int yaffs2_checkpt_invalidate_stream(yaffs_dev_t *dev) { - /* Erase the first checksum block */ - - T(YAFFS_TRACE_CHECKPOINT, (TSTR("checkpoint invalidate"TENDSTR))); + /* Erase the checkpoint data */ - if (!yaffs_CheckpointSpaceOk(dev)) - return 0; + T(YAFFS_TRACE_CHECKPOINT, (TSTR("checkpoint invalidate of %d blocks"TENDSTR), + dev->blocks_in_checkpt)); - return yaffs_CheckpointErase(dev); + return yaffs_checkpt_erase(dev); } diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_checkptrw.h b/target/linux/generic/files/fs/yaffs2/yaffs_checkptrw.h index 5d426ea8d7..059ba9e098 100644 --- a/target/linux/generic/files/fs/yaffs2/yaffs_checkptrw.h +++ b/target/linux/generic/files/fs/yaffs2/yaffs_checkptrw.h @@ -1,7 +1,7 @@ /* * YAFFS: Yet another Flash File System . A NAND-flash specific file system. * - * Copyright (C) 2002-2007 Aleph One Ltd. + * Copyright (C) 2002-2010 Aleph One Ltd. * for Toby Churchill Ltd and Brightstar Engineering * * Created by Charles Manning <charles@aleph1.co.uk> @@ -18,18 +18,17 @@ #include "yaffs_guts.h" -int yaffs_CheckpointOpen(yaffs_Device *dev, int forWriting); +int yaffs2_checkpt_open(yaffs_dev_t *dev, int forWriting); -int yaffs_CheckpointWrite(yaffs_Device *dev, const void *data, int nBytes); +int yaffs2_checkpt_wr(yaffs_dev_t *dev, const void *data, int n_bytes); -int yaffs_CheckpointRead(yaffs_Device *dev, void *data, int nBytes); +int yaffs2_checkpt_rd(yaffs_dev_t *dev, void *data, int n_bytes); -int yaffs_GetCheckpointSum(yaffs_Device *dev, __u32 *sum); +int yaffs2_get_checkpt_sum(yaffs_dev_t *dev, __u32 *sum); -int yaffs_CheckpointClose(yaffs_Device *dev); +int yaffs_checkpt_close(yaffs_dev_t *dev); -int yaffs_CheckpointInvalidateStream(yaffs_Device *dev); +int yaffs2_checkpt_invalidate_stream(yaffs_dev_t *dev); #endif - diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_ecc.c b/target/linux/generic/files/fs/yaffs2/yaffs_ecc.c index d037e90a24..4030908d51 100644 --- a/target/linux/generic/files/fs/yaffs2/yaffs_ecc.c +++ b/target/linux/generic/files/fs/yaffs2/yaffs_ecc.c @@ -1,7 +1,7 @@ /* * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. * - * Copyright (C) 2002-2007 Aleph One Ltd. + * Copyright (C) 2002-2010 Aleph One Ltd. * for Toby Churchill Ltd and Brightstar Engineering * * Created by Charles Manning <charles@aleph1.co.uk> @@ -28,9 +28,6 @@ * this bytes influence on the line parity. */ -const char *yaffs_ecc_c_version = - "$Id: yaffs_ecc.c,v 1.11 2009-03-06 17:20:50 wookey Exp $"; - #include "yportenv.h" #include "yaffs_ecc.h" @@ -72,7 +69,7 @@ static const unsigned char column_parity_table[] = { /* Count the bits in an unsigned char or a U32 */ -static int yaffs_CountBits(unsigned char x) +static int yaffs_count_bits(unsigned char x) { int r = 0; while (x) { @@ -83,7 +80,7 @@ static int yaffs_CountBits(unsigned char x) return r; } -static int yaffs_CountBits32(unsigned x) +static int yaffs_count_bits32(unsigned x) { int r = 0; while (x) { @@ -95,7 +92,7 @@ static int yaffs_CountBits32(unsigned x) } /* Calculate the ECC for a 256-byte block of data */ -void yaffs_ECCCalculate(const unsigned char *data, unsigned char *ecc) +void yaffs_ecc_cacl(const unsigned char *data, unsigned char *ecc) { unsigned int i; @@ -166,7 +163,7 @@ void yaffs_ECCCalculate(const unsigned char *data, unsigned char *ecc) /* Correct the ECC on a 256 byte block of data */ -int yaffs_ECCCorrect(unsigned char *data, unsigned char *read_ecc, +int yaffs_ecc_correct(unsigned char *data, unsigned char *read_ecc, const unsigned char *test_ecc) { unsigned char d0, d1, d2; /* deltas */ @@ -226,9 +223,9 @@ int yaffs_ECCCorrect(unsigned char *data, unsigned char *read_ecc, return 1; /* Corrected the error */ } - if ((yaffs_CountBits(d0) + - yaffs_CountBits(d1) + - yaffs_CountBits(d2)) == 1) { + if ((yaffs_count_bits(d0) + + yaffs_count_bits(d1) + + yaffs_count_bits(d2)) == 1) { /* Reccoverable error in ecc */ read_ecc[0] = test_ecc[0]; @@ -248,7 +245,7 @@ int yaffs_ECCCorrect(unsigned char *data, unsigned char *read_ecc, /* * ECCxxxOther does ECC calcs on arbitrary n bytes of data */ -void yaffs_ECCCalculateOther(const unsigned char *data, unsigned nBytes, +void yaffs_ecc_calc_other(const unsigned char *data, unsigned n_bytes, yaffs_ECCOther *eccOther) { unsigned int i; @@ -258,7 +255,7 @@ void yaffs_ECCCalculateOther(const unsigned char *data, unsigned nBytes, unsigned line_parity_prime = 0; unsigned char b; - for (i = 0; i < nBytes; i++) { + for (i = 0; i < n_bytes; i++) { b = column_parity_table[*data++]; col_parity ^= b; @@ -275,7 +272,7 @@ void yaffs_ECCCalculateOther(const unsigned char *data, unsigned nBytes, eccOther->lineParityPrime = line_parity_prime; } -int yaffs_ECCCorrectOther(unsigned char *data, unsigned nBytes, +int yaffs_ecc_correct_other(unsigned char *data, unsigned n_bytes, yaffs_ECCOther *read_ecc, const yaffs_ECCOther *test_ecc) { @@ -304,7 +301,7 @@ int yaffs_ECCCorrectOther(unsigned char *data, unsigned nBytes, if (cDelta & 0x02) bit |= 0x01; - if (lDelta >= nBytes) + if (lDelta >= n_bytes) return -1; data[lDelta] ^= (1 << bit); @@ -312,8 +309,8 @@ int yaffs_ECCCorrectOther(unsigned char *data, unsigned nBytes, return 1; /* corrected */ } - if ((yaffs_CountBits32(lDelta) + yaffs_CountBits32(lDeltaPrime) + - yaffs_CountBits(cDelta)) == 1) { + if ((yaffs_count_bits32(lDelta) + yaffs_count_bits32(lDeltaPrime) + + yaffs_count_bits(cDelta)) == 1) { /* Reccoverable error in ecc */ *read_ecc = *test_ecc; diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_ecc.h b/target/linux/generic/files/fs/yaffs2/yaffs_ecc.h index 60765176e8..124e5a0d40 100644 --- a/target/linux/generic/files/fs/yaffs2/yaffs_ecc.h +++ b/target/linux/generic/files/fs/yaffs2/yaffs_ecc.h @@ -1,7 +1,7 @@ /* * YAFFS: Yet another Flash File System . A NAND-flash specific file system. * - * Copyright (C) 2002-2007 Aleph One Ltd. + * Copyright (C) 2002-2010 Aleph One Ltd. * for Toby Churchill Ltd and Brightstar Engineering * * Created by Charles Manning <charles@aleph1.co.uk> @@ -32,13 +32,13 @@ typedef struct { unsigned lineParityPrime; } yaffs_ECCOther; -void yaffs_ECCCalculate(const unsigned char *data, unsigned char *ecc); -int yaffs_ECCCorrect(unsigned char *data, unsigned char *read_ecc, +void yaffs_ecc_cacl(const unsigned char *data, unsigned char *ecc); +int yaffs_ecc_correct(unsigned char *data, unsigned char *read_ecc, const unsigned char *test_ecc); -void yaffs_ECCCalculateOther(const unsigned char *data, unsigned nBytes, +void yaffs_ecc_calc_other(const unsigned char *data, unsigned n_bytes, yaffs_ECCOther *ecc); -int yaffs_ECCCorrectOther(unsigned char *data, unsigned nBytes, +int yaffs_ecc_correct_other(unsigned char *data, unsigned n_bytes, yaffs_ECCOther *read_ecc, const yaffs_ECCOther *test_ecc); #endif diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_fs.c b/target/linux/generic/files/fs/yaffs2/yaffs_fs.c deleted file mode 100644 index 7c04ed3a3d..0000000000 --- a/target/linux/generic/files/fs/yaffs2/yaffs_fs.c +++ /dev/null @@ -1,2529 +0,0 @@ -/* - * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. - * - * Copyright (C) 2002-2009 Aleph One Ltd. - * for Toby Churchill Ltd and Brightstar Engineering - * - * Created by Charles Manning <charles@aleph1.co.uk> - * Acknowledgements: - * Luc van OostenRyck for numerous patches. - * Nick Bane for numerous patches. - * Nick Bane for 2.5/2.6 integration. - * Andras Toth for mknod rdev issue. - * Michael Fischer for finding the problem with inode inconsistency. - * Some code bodily lifted from JFFS - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - */ - -/* - * - * This is the file system front-end to YAFFS that hooks it up to - * the VFS. - * - * Special notes: - * >> 2.4: sb->u.generic_sbp points to the yaffs_Device associated with - * this superblock - * >> 2.6: sb->s_fs_info points to the yaffs_Device associated with this - * superblock - * >> inode->u.generic_ip points to the associated yaffs_Object. - */ - -const char *yaffs_fs_c_version = - "$Id: yaffs_fs.c,v 1.79 2009-03-17 01:12:00 wookey Exp $"; -extern const char *yaffs_guts_c_version; - -#include <linux/version.h> -#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 19)) -#include <linux/config.h> -#endif -#include <linux/kernel.h> -#include <linux/module.h> -#include <linux/slab.h> -#include <linux/init.h> -#include <linux/fs.h> -#include <linux/proc_fs.h> -#include <linux/smp_lock.h> -#include <linux/pagemap.h> -#include <linux/mtd/mtd.h> -#include <linux/interrupt.h> -#include <linux/string.h> -#include <linux/ctype.h> - -#include "asm/div64.h" - -#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) - -#include <linux/statfs.h> /* Added NCB 15-8-2003 */ -#include <linux/statfs.h> -#define UnlockPage(p) unlock_page(p) -#define Page_Uptodate(page) test_bit(PG_uptodate, &(page)->flags) - -/* FIXME: use sb->s_id instead ? */ -#define yaffs_devname(sb, buf) bdevname(sb->s_bdev, buf) - -#else - -#include <linux/locks.h> -#define BDEVNAME_SIZE 0 -#define yaffs_devname(sb, buf) kdevname(sb->s_dev) - -#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 5, 0)) -/* added NCB 26/5/2006 for 2.4.25-vrs2-tcl1 kernel */ -#define __user -#endif - -#endif - -#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 26)) -#define YPROC_ROOT (&proc_root) -#else -#define YPROC_ROOT NULL -#endif - -#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) -#define WRITE_SIZE_STR "writesize" -#define WRITE_SIZE(mtd) ((mtd)->writesize) -#else -#define WRITE_SIZE_STR "oobblock" -#define WRITE_SIZE(mtd) ((mtd)->oobblock) -#endif - -#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 27)) -#define YAFFS_USE_WRITE_BEGIN_END 1 -#else -#define YAFFS_USE_WRITE_BEGIN_END 0 -#endif - -#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 28)) -static uint32_t YCALCBLOCKS(uint64_t partition_size, uint32_t block_size) -{ - uint64_t result = partition_size; - do_div(result, block_size); - return (uint32_t)result; -} -#else -#define YCALCBLOCKS(s, b) ((s)/(b)) -#endif - -#include <linux/uaccess.h> - -#include "yportenv.h" -#include "yaffs_guts.h" - -#include <linux/mtd/mtd.h> -#include "yaffs_mtdif.h" -#include "yaffs_mtdif1.h" -#include "yaffs_mtdif2.h" - -unsigned int yaffs_traceMask = YAFFS_TRACE_BAD_BLOCKS; -unsigned int yaffs_wr_attempts = YAFFS_WR_ATTEMPTS; -unsigned int yaffs_auto_checkpoint = 1; - -/* Module Parameters */ -#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) -module_param(yaffs_traceMask, uint, 0644); -module_param(yaffs_wr_attempts, uint, 0644); -module_param(yaffs_auto_checkpoint, uint, 0644); -#else -MODULE_PARM(yaffs_traceMask, "i"); -MODULE_PARM(yaffs_wr_attempts, "i"); -MODULE_PARM(yaffs_auto_checkpoint, "i"); -#endif - -#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 25)) -/* use iget and read_inode */ -#define Y_IGET(sb, inum) iget((sb), (inum)) -static void yaffs_read_inode(struct inode *inode); - -#else -/* Call local equivalent */ -#define YAFFS_USE_OWN_IGET -#define Y_IGET(sb, inum) yaffs_iget((sb), (inum)) - -static struct inode *yaffs_iget(struct super_block *sb, unsigned long ino); -#endif - -/*#define T(x) printk x */ - -#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 18)) -#define yaffs_InodeToObjectLV(iptr) ((iptr)->i_private) -#else -#define yaffs_InodeToObjectLV(iptr) ((iptr)->u.generic_ip) -#endif - -#define yaffs_InodeToObject(iptr) ((yaffs_Object *)(yaffs_InodeToObjectLV(iptr))) -#define yaffs_DentryToObject(dptr) yaffs_InodeToObject((dptr)->d_inode) - -#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) -#define yaffs_SuperToDevice(sb) ((yaffs_Device *)sb->s_fs_info) -#else -#define yaffs_SuperToDevice(sb) ((yaffs_Device *)sb->u.generic_sbp) -#endif - -static void yaffs_put_super(struct super_block *sb); - -static ssize_t yaffs_file_write(struct file *f, const char *buf, size_t n, - loff_t *pos); -static ssize_t yaffs_hold_space(struct file *f); -static void yaffs_release_space(struct file *f); - -#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) -static int yaffs_file_flush(struct file *file, fl_owner_t id); -#else -static int yaffs_file_flush(struct file *file); -#endif - -static int yaffs_sync_object(struct file *file, struct dentry *dentry, - int datasync); - -static int yaffs_readdir(struct file *f, void *dirent, filldir_t filldir); - -#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) -static int yaffs_create(struct inode *dir, struct dentry *dentry, int mode, - struct nameidata *n); -static struct dentry *yaffs_lookup(struct inode *dir, struct dentry *dentry, - struct nameidata *n); -#else -static int yaffs_create(struct inode *dir, struct dentry *dentry, int mode); -static struct dentry *yaffs_lookup(struct inode *dir, struct dentry *dentry); -#endif -static int yaffs_link(struct dentry *old_dentry, struct inode *dir, - struct dentry *dentry); -static int yaffs_unlink(struct inode *dir, struct dentry *dentry); -static int yaffs_symlink(struct inode *dir, struct dentry *dentry, - const char *symname); -static int yaffs_mkdir(struct inode *dir, struct dentry *dentry, int mode); - -#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) -static int yaffs_mknod(struct inode *dir, struct dentry *dentry, int mode, - dev_t dev); -#else -static int yaffs_mknod(struct inode *dir, struct dentry *dentry, int mode, - int dev); -#endif -static int yaffs_rename(struct inode *old_dir, struct dentry *old_dentry, - struct inode *new_dir, struct dentry *new_dentry); -static int yaffs_setattr(struct dentry *dentry, struct iattr *attr); - -#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) -static int yaffs_sync_fs(struct super_block *sb, int wait); -static void yaffs_write_super(struct super_block *sb); -#else -static int yaffs_sync_fs(struct super_block *sb); -static int yaffs_write_super(struct super_block *sb); -#endif - -#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) -static int yaffs_statfs(struct dentry *dentry, struct kstatfs *buf); -#elif (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) -static int yaffs_statfs(struct super_block *sb, struct kstatfs *buf); -#else -static int yaffs_statfs(struct super_block *sb, struct statfs *buf); -#endif - -#ifdef YAFFS_HAS_PUT_INODE -static void yaffs_put_inode(struct inode *inode); -#endif - -static void yaffs_delete_inode(struct inode *); -static void yaffs_clear_inode(struct inode *); - -static int yaffs_readpage(struct file *file, struct page *page); -#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) -static int yaffs_writepage(struct page *page, struct writeback_control *wbc); -#else -static int yaffs_writepage(struct page *page); -#endif - - -#if (YAFFS_USE_WRITE_BEGIN_END != 0) -static int yaffs_write_begin(struct file *filp, struct address_space *mapping, - loff_t pos, unsigned len, unsigned flags, - struct page **pagep, void **fsdata); -static int yaffs_write_end(struct file *filp, struct address_space *mapping, - loff_t pos, unsigned len, unsigned copied, - struct page *pg, void *fsdadata); -#else -static int yaffs_prepare_write(struct file *f, struct page *pg, - unsigned offset, unsigned to); -static int yaffs_commit_write(struct file *f, struct page *pg, unsigned offset, - unsigned to); - -#endif - -static int yaffs_readlink(struct dentry *dentry, char __user *buffer, - int buflen); -#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 13)) -static void *yaffs_follow_link(struct dentry *dentry, struct nameidata *nd); -#else -static int yaffs_follow_link(struct dentry *dentry, struct nameidata *nd); -#endif - -static struct address_space_operations yaffs_file_address_operations = { - .readpage = yaffs_readpage, - .writepage = yaffs_writepage, -#if (YAFFS_USE_WRITE_BEGIN_END > 0) - .write_begin = yaffs_write_begin, - .write_end = yaffs_write_end, -#else - .prepare_write = yaffs_prepare_write, - .commit_write = yaffs_commit_write, -#endif -}; - -#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 22)) -static const struct file_operations yaffs_file_operations = { - .read = do_sync_read, - .write = do_sync_write, - .aio_read = generic_file_aio_read, - .aio_write = generic_file_aio_write, - .mmap = generic_file_mmap, - .flush = yaffs_file_flush, - .fsync = yaffs_sync_object, - .splice_read = generic_file_splice_read, - .splice_write = generic_file_splice_write, - .llseek = generic_file_llseek, -}; - -#elif (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 18)) - -static const struct file_operations yaffs_file_operations = { - .read = do_sync_read, - .write = do_sync_write, - .aio_read = generic_file_aio_read, - .aio_write = generic_file_aio_write, - .mmap = generic_file_mmap, - .flush = yaffs_file_flush, - .fsync = yaffs_sync_object, - .sendfile = generic_file_sendfile, -}; - -#else - -static const struct file_operations yaffs_file_operations = { - .read = generic_file_read, - .write = generic_file_write, - .mmap = generic_file_mmap, - .flush = yaffs_file_flush, - .fsync = yaffs_sync_object, -#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) - .sendfile = generic_file_sendfile, -#endif -}; -#endif - -static const struct inode_operations yaffs_file_inode_operations = { - .setattr = yaffs_setattr, -}; - -static const struct inode_operations yaffs_symlink_inode_operations = { - .readlink = yaffs_readlink, - .follow_link = yaffs_follow_link, - .setattr = yaffs_setattr, -}; - -static const struct inode_operations yaffs_dir_inode_operations = { - .create = yaffs_create, - .lookup = yaffs_lookup, - .link = yaffs_link, - .unlink = yaffs_unlink, - .symlink = yaffs_symlink, - .mkdir = yaffs_mkdir, - .rmdir = yaffs_unlink, - .mknod = yaffs_mknod, - .rename = yaffs_rename, - .setattr = yaffs_setattr, -}; - -static const struct file_operations yaffs_dir_operations = { - .read = generic_read_dir, - .readdir = yaffs_readdir, - .fsync = yaffs_sync_object, -}; - -static const struct super_operations yaffs_super_ops = { - .statfs = yaffs_statfs, - -#ifndef YAFFS_USE_OWN_IGET - .read_inode = yaffs_read_inode, -#endif -#ifdef YAFFS_HAS_PUT_INODE - .put_inode = yaffs_put_inode, -#endif - .put_super = yaffs_put_super, - .delete_inode = yaffs_delete_inode, - .clear_inode = yaffs_clear_inode, - .sync_fs = yaffs_sync_fs, - .write_super = yaffs_write_super, -}; - -static void yaffs_GrossLock(yaffs_Device *dev) -{ - T(YAFFS_TRACE_OS, ("yaffs locking %p\n", current)); - down(&dev->grossLock); - T(YAFFS_TRACE_OS, ("yaffs locked %p\n", current)); -} - -static void yaffs_GrossUnlock(yaffs_Device *dev) -{ - T(YAFFS_TRACE_OS, ("yaffs unlocking %p\n", current)); - up(&dev->grossLock); -} - -static int yaffs_readlink(struct dentry *dentry, char __user *buffer, - int buflen) -{ - unsigned char *alias; - int ret; - - yaffs_Device *dev = yaffs_DentryToObject(dentry)->myDev; - - yaffs_GrossLock(dev); - - alias = yaffs_GetSymlinkAlias(yaffs_DentryToObject(dentry)); - - yaffs_GrossUnlock(dev); - - if (!alias) - return -ENOMEM; - - ret = vfs_readlink(dentry, buffer, buflen, alias); - kfree(alias); - return ret; -} - -#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 13)) -static void *yaffs_follow_link(struct dentry *dentry, struct nameidata *nd) -#else -static int yaffs_follow_link(struct dentry *dentry, struct nameidata *nd) -#endif -{ - unsigned char *alias; - int ret; - yaffs_Device *dev = yaffs_DentryToObject(dentry)->myDev; - - yaffs_GrossLock(dev); - - alias = yaffs_GetSymlinkAlias(yaffs_DentryToObject(dentry)); - - yaffs_GrossUnlock(dev); - - if (!alias) { - ret = -ENOMEM; - goto out; - } - - ret = vfs_follow_link(nd, alias); - kfree(alias); -out: -#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 13)) - return ERR_PTR(ret); -#else - return ret; -#endif -} - -struct inode *yaffs_get_inode(struct super_block *sb, int mode, int dev, - yaffs_Object *obj); - -/* - * Lookup is used to find objects in the fs - */ -#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) - -static struct dentry *yaffs_lookup(struct inode *dir, struct dentry *dentry, - struct nameidata *n) -#else -static struct dentry *yaffs_lookup(struct inode *dir, struct dentry *dentry) -#endif -{ - yaffs_Object *obj; - struct inode *inode = NULL; /* NCB 2.5/2.6 needs NULL here */ - - yaffs_Device *dev = yaffs_InodeToObject(dir)->myDev; - - yaffs_GrossLock(dev); - - T(YAFFS_TRACE_OS, - ("yaffs_lookup for %d:%s\n", - yaffs_InodeToObject(dir)->objectId, dentry->d_name.name)); - - obj = yaffs_FindObjectByName(yaffs_InodeToObject(dir), - dentry->d_name.name); - - obj = yaffs_GetEquivalentObject(obj); /* in case it was a hardlink */ - - /* Can't hold gross lock when calling yaffs_get_inode() */ - yaffs_GrossUnlock(dev); - - if (obj) { - T(YAFFS_TRACE_OS, - ("yaffs_lookup found %d\n", obj->objectId)); - - inode = yaffs_get_inode(dir->i_sb, obj->yst_mode, 0, obj); - - if (inode) { - T(YAFFS_TRACE_OS, - ("yaffs_loookup dentry \n")); -/* #if 0 asserted by NCB for 2.5/6 compatability - falls through to - * d_add even if NULL inode */ -#if 0 - /*dget(dentry); // try to solve directory bug */ - d_add(dentry, inode); - - /* return dentry; */ - return NULL; -#endif - } - - } else { - T(YAFFS_TRACE_OS, ("yaffs_lookup not found\n")); - - } - -/* added NCB for 2.5/6 compatability - forces add even if inode is - * NULL which creates dentry hash */ - d_add(dentry, inode); - - return NULL; -} - - -#ifdef YAFFS_HAS_PUT_INODE - -/* For now put inode is just for debugging - * Put inode is called when the inode **structure** is put. - */ -static void yaffs_put_inode(struct inode *inode) -{ - T(YAFFS_TRACE_OS, - ("yaffs_put_inode: ino %d, count %d\n", (int)inode->i_ino, - atomic_read(&inode->i_count))); - -} -#endif - -/* clear is called to tell the fs to release any per-inode data it holds */ -static void yaffs_clear_inode(struct inode *inode) -{ - yaffs_Object *obj; - yaffs_Device *dev; - - obj = yaffs_InodeToObject(inode); - - T(YAFFS_TRACE_OS, - ("yaffs_clear_inode: ino %d, count %d %s\n", (int)inode->i_ino, - atomic_read(&inode->i_count), - obj ? "object exists" : "null object")); - - if (obj) { - dev = obj->myDev; - yaffs_GrossLock(dev); - - /* Clear the association between the inode and - * the yaffs_Object. - */ - obj->myInode = NULL; - yaffs_InodeToObjectLV(inode) = NULL; - - /* If the object freeing was deferred, then the real - * free happens now. - * This should fix the inode inconsistency problem. - */ - - yaffs_HandleDeferedFree(obj); - - yaffs_GrossUnlock(dev); - } - -} - -/* delete is called when the link count is zero and the inode - * is put (ie. nobody wants to know about it anymore, time to - * delete the file). - * NB Must call clear_inode() - */ -static void yaffs_delete_inode(struct inode *inode) -{ - yaffs_Object *obj = yaffs_InodeToObject(inode); - yaffs_Device *dev; - - T(YAFFS_TRACE_OS, - ("yaffs_delete_inode: ino %d, count %d %s\n", (int)inode->i_ino, - atomic_read(&inode->i_count), - obj ? "object exists" : "null object")); - - if (obj) { - dev = obj->myDev; - yaffs_GrossLock(dev); - yaffs_DeleteObject(obj); - yaffs_GrossUnlock(dev); - } -#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 13)) - truncate_inode_pages(&inode->i_data, 0); -#endif - clear_inode(inode); -} - -#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) -static int yaffs_file_flush(struct file *file, fl_owner_t id) -#else -static int yaffs_file_flush(struct file *file) -#endif -{ - yaffs_Object *obj = yaffs_DentryToObject(file->f_dentry); - - yaffs_Device *dev = obj->myDev; - - T(YAFFS_TRACE_OS, - ("yaffs_file_flush object %d (%s)\n", obj->objectId, - obj->dirty ? "dirty" : "clean")); - - yaffs_GrossLock(dev); - - yaffs_FlushFile(obj, 1); - - yaffs_GrossUnlock(dev); - - return 0; -} - -static int yaffs_readpage_nolock(struct file *f, struct page *pg) -{ - /* Lifted from jffs2 */ - - yaffs_Object *obj; - unsigned char *pg_buf; - int ret; - - yaffs_Device *dev; - - T(YAFFS_TRACE_OS, ("yaffs_readpage at %08x, size %08x\n", - (unsigned)(pg->index << PAGE_CACHE_SHIFT), - (unsigned)PAGE_CACHE_SIZE)); - - obj = yaffs_DentryToObject(f->f_dentry); - - dev = obj->myDev; - -#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) - BUG_ON(!PageLocked(pg)); -#else - if (!PageLocked(pg)) - PAGE_BUG(pg); -#endif - - pg_buf = kmap(pg); - /* FIXME: Can kmap fail? */ - - yaffs_GrossLock(dev); - - ret = yaffs_ReadDataFromFile(obj, pg_buf, - pg->index << PAGE_CACHE_SHIFT, - PAGE_CACHE_SIZE); - - yaffs_GrossUnlock(dev); - - if (ret >= 0) - ret = 0; - - if (ret) { - ClearPageUptodate(pg); - SetPageError(pg); - } else { - SetPageUptodate(pg); - ClearPageError(pg); - } - - flush_dcache_page(pg); - kunmap(pg); - - T(YAFFS_TRACE_OS, ("yaffs_readpage done\n")); - return ret; -} - -static int yaffs_readpage_unlock(struct file *f, struct page *pg) -{ - int ret = yaffs_readpage_nolock(f, pg); - UnlockPage(pg); - return ret; -} - -static int yaffs_readpage(struct file *f, struct page *pg) -{ - return yaffs_readpage_unlock(f, pg); -} - -/* writepage inspired by/stolen from smbfs */ - -#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) -static int yaffs_writepage(struct page *page, struct writeback_control *wbc) -#else -static int yaffs_writepage(struct page *page) -#endif -{ - struct address_space *mapping = page->mapping; - loff_t offset = (loff_t) page->index << PAGE_CACHE_SHIFT; - struct inode *inode; - unsigned long end_index; - char *buffer; - yaffs_Object *obj; - int nWritten = 0; - unsigned nBytes; - - if (!mapping) - BUG(); - inode = mapping->host; - if (!inode) - BUG(); - - if (offset > inode->i_size) { - T(YAFFS_TRACE_OS, - ("yaffs_writepage at %08x, inode size = %08x!!!\n", - (unsigned)(page->index << PAGE_CACHE_SHIFT), - (unsigned)inode->i_size)); - T(YAFFS_TRACE_OS, - (" -> don't care!!\n")); - unlock_page(page); - return 0; - } - - end_index = inode->i_size >> PAGE_CACHE_SHIFT; - - /* easy case */ - if (page->index < end_index) - nBytes = PAGE_CACHE_SIZE; - else - nBytes = inode->i_size & (PAGE_CACHE_SIZE - 1); - - get_page(page); - - buffer = kmap(page); - - obj = yaffs_InodeToObject(inode); - yaffs_GrossLock(obj->myDev); - - T(YAFFS_TRACE_OS, - ("yaffs_writepage at %08x, size %08x\n", - (unsigned)(page->index << PAGE_CACHE_SHIFT), nBytes)); - T(YAFFS_TRACE_OS, - ("writepag0: obj = %05x, ino = %05x\n", - (int)obj->variant.fileVariant.fileSize, (int)inode->i_size)); - - nWritten = yaffs_WriteDataToFile(obj, buffer, - page->index << PAGE_CACHE_SHIFT, nBytes, 0); - - T(YAFFS_TRACE_OS, - ("writepag1: obj = %05x, ino = %05x\n", - (int)obj->variant.fileVariant.fileSize, (int)inode->i_size)); - - yaffs_GrossUnlock(obj->myDev); - - kunmap(page); - SetPageUptodate(page); - UnlockPage(page); - put_page(page); - - return (nWritten == nBytes) ? 0 : -ENOSPC; -} - - -#if (YAFFS_USE_WRITE_BEGIN_END > 0) -static int yaffs_write_begin(struct file *filp, struct address_space *mapping, - loff_t pos, unsigned len, unsigned flags, - struct page **pagep, void **fsdata) -{ - struct page *pg = NULL; - pgoff_t index = pos >> PAGE_CACHE_SHIFT; - uint32_t offset = pos & (PAGE_CACHE_SIZE - 1); - uint32_t to = offset + len; - - int ret = 0; - int space_held = 0; - - T(YAFFS_TRACE_OS, ("start yaffs_write_begin\n")); - /* Get a page */ -#if LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 28) - pg = grab_cache_page_write_begin(mapping, index, flags); -#else - pg = __grab_cache_page(mapping, index); -#endif - - *pagep = pg; - if (!pg) { - ret = -ENOMEM; - goto out; - } - /* Get fs space */ - space_held = yaffs_hold_space(filp); - - if (!space_held) { - ret = -ENOSPC; - goto out; - } - - /* Update page if required */ - - if (!Page_Uptodate(pg) && (offset || to < PAGE_CACHE_SIZE)) - ret = yaffs_readpage_nolock(filp, pg); - - if (ret) - goto out; - - /* Happy path return */ - T(YAFFS_TRACE_OS, ("end yaffs_write_begin - ok\n")); - - return 0; - -out: - T(YAFFS_TRACE_OS, ("end yaffs_write_begin fail returning %d\n", ret)); - if (space_held) - yaffs_release_space(filp); - if (pg) { - unlock_page(pg); - page_cache_release(pg); - } - return ret; -} - -#else - -static int yaffs_prepare_write(struct file *f, struct page *pg, - unsigned offset, unsigned to) -{ - T(YAFFS_TRACE_OS, ("yaffs_prepair_write\n")); - - if (!Page_Uptodate(pg) && (offset || to < PAGE_CACHE_SIZE)) - return yaffs_readpage_nolock(f, pg); - return 0; -} -#endif - -#if (YAFFS_USE_WRITE_BEGIN_END > 0) -static int yaffs_write_end(struct file *filp, struct address_space *mapping, - loff_t pos, unsigned len, unsigned copied, - struct page *pg, void *fsdadata) -{ - int ret = 0; - void *addr, *kva; - uint32_t offset_into_page = pos & (PAGE_CACHE_SIZE - 1); - - kva = kmap(pg); - addr = kva + offset_into_page; - - T(YAFFS_TRACE_OS, - ("yaffs_write_end addr %x pos %x nBytes %d\n", - (unsigned) addr, - (int)pos, copied)); - - ret = yaffs_file_write(filp, addr, copied, &pos); - - if (ret != copied) { - T(YAFFS_TRACE_OS, - ("yaffs_write_end not same size ret %d copied %d\n", - ret, copied)); - SetPageError(pg); - ClearPageUptodate(pg); - } else { - SetPageUptodate(pg); - } - - kunmap(pg); - - yaffs_release_space(filp); - unlock_page(pg); - page_cache_release(pg); - return ret; -} -#else - -static int yaffs_commit_write(struct file *f, struct page *pg, unsigned offset, - unsigned to) -{ - void *addr, *kva; - - loff_t pos = (((loff_t) pg->index) << PAGE_CACHE_SHIFT) + offset; - int nBytes = to - offset; - int nWritten; - - unsigned spos = pos; - unsigned saddr; - - kva = kmap(pg); - addr = kva + offset; - - saddr = (unsigned) addr; - - T(YAFFS_TRACE_OS, - ("yaffs_commit_write addr %x pos %x nBytes %d\n", - saddr, spos, nBytes)); - - nWritten = yaffs_file_write(f, addr, nBytes, &pos); - - if (nWritten != nBytes) { - T(YAFFS_TRACE_OS, - ("yaffs_commit_write not same size nWritten %d nBytes %d\n", - nWritten, nBytes)); - SetPageError(pg); - ClearPageUptodate(pg); - } else { - SetPageUptodate(pg); - } - - kunmap(pg); - - T(YAFFS_TRACE_OS, - ("yaffs_commit_write returning %d\n", - nWritten == nBytes ? 0 : nWritten)); - - return nWritten == nBytes ? 0 : nWritten; -} -#endif - - -static void yaffs_FillInodeFromObject(struct inode *inode, yaffs_Object *obj) -{ - if (inode && obj) { - - - /* Check mode against the variant type and attempt to repair if broken. */ - __u32 mode = obj->yst_mode; - switch (obj->variantType) { - case YAFFS_OBJECT_TYPE_FILE: - if (!S_ISREG(mode)) { - obj->yst_mode &= ~S_IFMT; - obj->yst_mode |= S_IFREG; - } - - break; - case YAFFS_OBJECT_TYPE_SYMLINK: - if (!S_ISLNK(mode)) { - obj->yst_mode &= ~S_IFMT; - obj->yst_mode |= S_IFLNK; - } - - break; - case YAFFS_OBJECT_TYPE_DIRECTORY: - if (!S_ISDIR(mode)) { - obj->yst_mode &= ~S_IFMT; - obj->yst_mode |= S_IFDIR; - } - - break; - case YAFFS_OBJECT_TYPE_UNKNOWN: - case YAFFS_OBJECT_TYPE_HARDLINK: - case YAFFS_OBJECT_TYPE_SPECIAL: - default: - /* TODO? */ - break; - } - - inode->i_flags |= S_NOATIME; - - inode->i_ino = obj->objectId; - inode->i_mode = obj->yst_mode; - inode->i_uid = obj->yst_uid; - inode->i_gid = obj->yst_gid; -#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 19)) - inode->i_blksize = inode->i_sb->s_blocksize; -#endif -#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) - - inode->i_rdev = old_decode_dev(obj->yst_rdev); - inode->i_atime.tv_sec = (time_t) (obj->yst_atime); - inode->i_atime.tv_nsec = 0; - inode->i_mtime.tv_sec = (time_t) obj->yst_mtime; - inode->i_mtime.tv_nsec = 0; - inode->i_ctime.tv_sec = (time_t) obj->yst_ctime; - inode->i_ctime.tv_nsec = 0; -#else - inode->i_rdev = obj->yst_rdev; - inode->i_atime = obj->yst_atime; - inode->i_mtime = obj->yst_mtime; - inode->i_ctime = obj->yst_ctime; -#endif - inode->i_size = yaffs_GetObjectFileLength(obj); - inode->i_blocks = (inode->i_size + 511) >> 9; - - inode->i_nlink = yaffs_GetObjectLinkCount(obj); - - T(YAFFS_TRACE_OS, - ("yaffs_FillInode mode %x uid %d gid %d size %d count %d\n", - inode->i_mode, inode->i_uid, inode->i_gid, - (int)inode->i_size, atomic_read(&inode->i_count))); - - switch (obj->yst_mode & S_IFMT) { - default: /* fifo, device or socket */ -#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) - init_special_inode(inode, obj->yst_mode, - old_decode_dev(obj->yst_rdev)); -#else - init_special_inode(inode, obj->yst_mode, - (dev_t) (obj->yst_rdev)); -#endif - break; - case S_IFREG: /* file */ - inode->i_op = &yaffs_file_inode_operations; - inode->i_fop = &yaffs_file_operations; - inode->i_mapping->a_ops = - &yaffs_file_address_operations; - break; - case S_IFDIR: /* directory */ - inode->i_op = &yaffs_dir_inode_operations; - inode->i_fop = &yaffs_dir_operations; - break; - case S_IFLNK: /* symlink */ - inode->i_op = &yaffs_symlink_inode_operations; - break; - } - - yaffs_InodeToObjectLV(inode) = obj; - - obj->myInode = inode; - - } else { - T(YAFFS_TRACE_OS, - ("yaffs_FileInode invalid parameters\n")); - } - -} - -struct inode *yaffs_get_inode(struct super_block *sb, int mode, int dev, - yaffs_Object *obj) -{ - struct inode *inode; - - if (!sb) { - T(YAFFS_TRACE_OS, - ("yaffs_get_inode for NULL super_block!!\n")); - return NULL; - - } - - if (!obj) { - T(YAFFS_TRACE_OS, - ("yaffs_get_inode for NULL object!!\n")); - return NULL; - - } - - T(YAFFS_TRACE_OS, - ("yaffs_get_inode for object %d\n", obj->objectId)); - - inode = Y_IGET(sb, obj->objectId); - if (IS_ERR(inode)) - return NULL; - - /* NB Side effect: iget calls back to yaffs_read_inode(). */ - /* iget also increments the inode's i_count */ - /* NB You can't be holding grossLock or deadlock will happen! */ - - return inode; -} - -static ssize_t yaffs_file_write(struct file *f, const char *buf, size_t n, - loff_t *pos) -{ - yaffs_Object *obj; - int nWritten, ipos; - struct inode *inode; - yaffs_Device *dev; - - obj = yaffs_DentryToObject(f->f_dentry); - - dev = obj->myDev; - - yaffs_GrossLock(dev); - - inode = f->f_dentry->d_inode; - - if (!S_ISBLK(inode->i_mode) && f->f_flags & O_APPEND) - ipos = inode->i_size; - else - ipos = *pos; - - if (!obj) - T(YAFFS_TRACE_OS, - ("yaffs_file_write: hey obj is null!\n")); - else - T(YAFFS_TRACE_OS, - ("yaffs_file_write about to write writing %zu bytes" - "to object %d at %d\n", - n, obj->objectId, ipos)); - - nWritten = yaffs_WriteDataToFile(obj, buf, ipos, n, 0); - - T(YAFFS_TRACE_OS, - ("yaffs_file_write writing %zu bytes, %d written at %d\n", - n, nWritten, ipos)); - - if (nWritten > 0) { - ipos += nWritten; - *pos = ipos; - if (ipos > inode->i_size) { - inode->i_size = ipos; - inode->i_blocks = (ipos + 511) >> 9; - - T(YAFFS_TRACE_OS, - ("yaffs_file_write size updated to %d bytes, " - "%d blocks\n", - ipos, (int)(inode->i_blocks))); - } - - } - yaffs_GrossUnlock(dev); - return nWritten == 0 ? -ENOSPC : nWritten; -} - -/* Space holding and freeing is done to ensure we have space available for write_begin/end */ -/* For now we just assume few parallel writes and check against a small number. */ -/* Todo: need to do this with a counter to handle parallel reads better */ - -static ssize_t yaffs_hold_space(struct file *f) -{ - yaffs_Object *obj; - yaffs_Device *dev; - - int nFreeChunks; - - - obj = yaffs_DentryToObject(f->f_dentry); - - dev = obj->myDev; - - yaffs_GrossLock(dev); - - nFreeChunks = yaffs_GetNumberOfFreeChunks(dev); - - yaffs_GrossUnlock(dev); - - return (nFreeChunks > 20) ? 1 : 0; -} - -static void yaffs_release_space(struct file *f) -{ - yaffs_Object *obj; - yaffs_Device *dev; - - - obj = yaffs_DentryToObject(f->f_dentry); - - dev = obj->myDev; - - yaffs_GrossLock(dev); - - - yaffs_GrossUnlock(dev); -} - -static int yaffs_readdir(struct file *f, void *dirent, filldir_t filldir) -{ - yaffs_Object *obj; - yaffs_Device *dev; - struct inode *inode = f->f_dentry->d_inode; - unsigned long offset, curoffs; - struct ylist_head *i; - yaffs_Object *l; - - char name[YAFFS_MAX_NAME_LENGTH + 1]; - - obj = yaffs_DentryToObject(f->f_dentry); - dev = obj->myDev; - - yaffs_GrossLock(dev); - - offset = f->f_pos; - - T(YAFFS_TRACE_OS, ("yaffs_readdir: starting at %d\n", (int)offset)); - - if (offset == 0) { - T(YAFFS_TRACE_OS, - ("yaffs_readdir: entry . ino %d \n", - (int)inode->i_ino)); - if (filldir(dirent, ".", 1, offset, inode->i_ino, DT_DIR) < 0) - goto out; - offset++; - f->f_pos++; - } - if (offset == 1) { - T(YAFFS_TRACE_OS, - ("yaffs_readdir: entry .. ino %d \n", - (int)f->f_dentry->d_parent->d_inode->i_ino)); - if (filldir(dirent, "..", 2, offset, - f->f_dentry->d_parent->d_inode->i_ino, DT_DIR) < 0) - goto out; - offset++; - f->f_pos++; - } - - curoffs = 1; - - /* If the directory has changed since the open or last call to - readdir, rewind to after the 2 canned entries. */ - - if (f->f_version != inode->i_version) { - offset = 2; - f->f_pos = offset; - f->f_version = inode->i_version; - } - - ylist_for_each(i, &obj->variant.directoryVariant.children) { - curoffs++; - if (curoffs >= offset) { - l = ylist_entry(i, yaffs_Object, siblings); - - yaffs_GetObjectName(l, name, - YAFFS_MAX_NAME_LENGTH + 1); - T(YAFFS_TRACE_OS, - ("yaffs_readdir: %s inode %d\n", name, - yaffs_GetObjectInode(l))); - - if (filldir(dirent, - name, - strlen(name), - offset, - yaffs_GetObjectInode(l), - yaffs_GetObjectType(l)) < 0) - goto up_and_out; - - offset++; - f->f_pos++; - } - } - -up_and_out: -out: - yaffs_GrossUnlock(dev); - - return 0; -} - -/* - * File creation. Allocate an inode, and we're done.. - */ - -#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 29) -#define YCRED(x) x -#else -#define YCRED(x) (x->cred) -#endif - -#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) -static int yaffs_mknod(struct inode *dir, struct dentry *dentry, int mode, - dev_t rdev) -#else -static int yaffs_mknod(struct inode *dir, struct dentry *dentry, int mode, - int rdev) -#endif -{ - struct inode *inode; - - yaffs_Object *obj = NULL; - yaffs_Device *dev; - - yaffs_Object *parent = yaffs_InodeToObject(dir); - - int error = -ENOSPC; - uid_t uid = YCRED(current)->fsuid; - gid_t gid = (dir->i_mode & S_ISGID) ? dir->i_gid : YCRED(current)->fsgid; - - if ((dir->i_mode & S_ISGID) && S_ISDIR(mode)) - mode |= S_ISGID; - - if (parent) { - T(YAFFS_TRACE_OS, - ("yaffs_mknod: parent object %d type %d\n", - parent->objectId, parent->variantType)); - } else { - T(YAFFS_TRACE_OS, - ("yaffs_mknod: could not get parent object\n")); - return -EPERM; - } - - T(YAFFS_TRACE_OS, ("yaffs_mknod: making oject for %s, " - "mode %x dev %x\n", - dentry->d_name.name, mode, rdev)); - - dev = parent->myDev; - - yaffs_GrossLock(dev); - - switch (mode & S_IFMT) { - default: - /* Special (socket, fifo, device...) */ - T(YAFFS_TRACE_OS, ("yaffs_mknod: making special\n")); -#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) - obj = yaffs_MknodSpecial(parent, dentry->d_name.name, mode, uid, - gid, old_encode_dev(rdev)); -#else - obj = yaffs_MknodSpecial(parent, dentry->d_name.name, mode, uid, - gid, rdev); -#endif - break; - case S_IFREG: /* file */ - T(YAFFS_TRACE_OS, ("yaffs_mknod: making file\n")); - obj = yaffs_MknodFile(parent, dentry->d_name.name, mode, uid, - gid); - break; - case S_IFDIR: /* directory */ - T(YAFFS_TRACE_OS, - ("yaffs_mknod: making directory\n")); - obj = yaffs_MknodDirectory(parent, dentry->d_name.name, mode, - uid, gid); - break; - case S_IFLNK: /* symlink */ - T(YAFFS_TRACE_OS, ("yaffs_mknod: making symlink\n")); - obj = NULL; /* Do we ever get here? */ - break; - } - - /* Can not call yaffs_get_inode() with gross lock held */ - yaffs_GrossUnlock(dev); - - if (obj) { - inode = yaffs_get_inode(dir->i_sb, mode, rdev, obj); - d_instantiate(dentry, inode); - T(YAFFS_TRACE_OS, - ("yaffs_mknod created object %d count = %d\n", - obj->objectId, atomic_read(&inode->i_count))); - error = 0; - } else { - T(YAFFS_TRACE_OS, - ("yaffs_mknod failed making object\n")); - error = -ENOMEM; - } - - return error; -} - -static int yaffs_mkdir(struct inode *dir, struct dentry *dentry, int mode) -{ - int retVal; - T(YAFFS_TRACE_OS, ("yaffs_mkdir\n")); - retVal = yaffs_mknod(dir, dentry, mode | S_IFDIR, 0); - return retVal; -} - -#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) -static int yaffs_create(struct inode *dir, struct dentry *dentry, int mode, - struct nameidata *n) -#else -static int yaffs_create(struct inode *dir, struct dentry *dentry, int mode) -#endif -{ - T(YAFFS_TRACE_OS, ("yaffs_create\n")); - return yaffs_mknod(dir, dentry, mode | S_IFREG, 0); -} - -static int yaffs_unlink(struct inode *dir, struct dentry *dentry) -{ - int retVal; - - yaffs_Device *dev; - - T(YAFFS_TRACE_OS, - ("yaffs_unlink %d:%s\n", (int)(dir->i_ino), - dentry->d_name.name)); - - dev = yaffs_InodeToObject(dir)->myDev; - - yaffs_GrossLock(dev); - - retVal = yaffs_Unlink(yaffs_InodeToObject(dir), dentry->d_name.name); - - if (retVal == YAFFS_OK) { - dentry->d_inode->i_nlink--; - dir->i_version++; - yaffs_GrossUnlock(dev); - mark_inode_dirty(dentry->d_inode); - return 0; - } - yaffs_GrossUnlock(dev); - return -ENOTEMPTY; -} - -/* - * Create a link... - */ -static int yaffs_link(struct dentry *old_dentry, struct inode *dir, - struct dentry *dentry) -{ - struct inode *inode = old_dentry->d_inode; - yaffs_Object *obj = NULL; - yaffs_Object *link = NULL; - yaffs_Device *dev; - - T(YAFFS_TRACE_OS, ("yaffs_link\n")); - - obj = yaffs_InodeToObject(inode); - dev = obj->myDev; - - yaffs_GrossLock(dev); - - if (!S_ISDIR(inode->i_mode)) /* Don't link directories */ - link = yaffs_Link(yaffs_InodeToObject(dir), dentry->d_name.name, - obj); - - if (link) { - old_dentry->d_inode->i_nlink = yaffs_GetObjectLinkCount(obj); - d_instantiate(dentry, old_dentry->d_inode); - atomic_inc(&old_dentry->d_inode->i_count); - T(YAFFS_TRACE_OS, - ("yaffs_link link count %d i_count %d\n", - old_dentry->d_inode->i_nlink, - atomic_read(&old_dentry->d_inode->i_count))); - } - - yaffs_GrossUnlock(dev); - - if (link) - return 0; - - return -EPERM; -} - -static int yaffs_symlink(struct inode *dir, struct dentry *dentry, - const char *symname) -{ - yaffs_Object *obj; - yaffs_Device *dev; - uid_t uid = YCRED(current)->fsuid; - gid_t gid = (dir->i_mode & S_ISGID) ? dir->i_gid : YCRED(current)->fsgid; - - T(YAFFS_TRACE_OS, ("yaffs_symlink\n")); - - dev = yaffs_InodeToObject(dir)->myDev; - yaffs_GrossLock(dev); - obj = yaffs_MknodSymLink(yaffs_InodeToObject(dir), dentry->d_name.name, - S_IFLNK | S_IRWXUGO, uid, gid, symname); - yaffs_GrossUnlock(dev); - - if (obj) { - struct inode *inode; - - inode = yaffs_get_inode(dir->i_sb, obj->yst_mode, 0, obj); - d_instantiate(dentry, inode); - T(YAFFS_TRACE_OS, ("symlink created OK\n")); - return 0; - } else { - T(YAFFS_TRACE_OS, ("symlink not created\n")); - } - - return -ENOMEM; -} - -static int yaffs_sync_object(struct file *file, struct dentry *dentry, - int datasync) -{ - - yaffs_Object *obj; - yaffs_Device *dev; - - obj = yaffs_DentryToObject(dentry); - - dev = obj->myDev; - - T(YAFFS_TRACE_OS, ("yaffs_sync_object\n")); - yaffs_GrossLock(dev); - yaffs_FlushFile(obj, 1); - yaffs_GrossUnlock(dev); - return 0; -} - -/* - * The VFS layer already does all the dentry stuff for rename. - * - * NB: POSIX says you can rename an object over an old object of the same name - */ -static int yaffs_rename(struct inode *old_dir, struct dentry *old_dentry, - struct inode *new_dir, struct dentry *new_dentry) -{ - yaffs_Device *dev; - int retVal = YAFFS_FAIL; - yaffs_Object *target; - - T(YAFFS_TRACE_OS, ("yaffs_rename\n")); - dev = yaffs_InodeToObject(old_dir)->myDev; - - yaffs_GrossLock(dev); - - /* Check if the target is an existing directory that is not empty. */ - target = yaffs_FindObjectByName(yaffs_InodeToObject(new_dir), - new_dentry->d_name.name); - - - - if (target && target->variantType == YAFFS_OBJECT_TYPE_DIRECTORY && - !ylist_empty(&target->variant.directoryVariant.children)) { - - T(YAFFS_TRACE_OS, ("target is non-empty dir\n")); - - retVal = YAFFS_FAIL; - } else { - /* Now does unlinking internally using shadowing mechanism */ - T(YAFFS_TRACE_OS, ("calling yaffs_RenameObject\n")); - - retVal = yaffs_RenameObject(yaffs_InodeToObject(old_dir), - old_dentry->d_name.name, - yaffs_InodeToObject(new_dir), - new_dentry->d_name.name); - } - yaffs_GrossUnlock(dev); - - if (retVal == YAFFS_OK) { - if (target) { - new_dentry->d_inode->i_nlink--; - mark_inode_dirty(new_dentry->d_inode); - } - - return 0; - } else { - return -ENOTEMPTY; - } -} - -static int yaffs_setattr(struct dentry *dentry, struct iattr *attr) -{ - struct inode *inode = dentry->d_inode; - int error; - yaffs_Device *dev; - - T(YAFFS_TRACE_OS, - ("yaffs_setattr of object %d\n", - yaffs_InodeToObject(inode)->objectId)); - - error = inode_change_ok(inode, attr); - if (error == 0) { - dev = yaffs_InodeToObject(inode)->myDev; - yaffs_GrossLock(dev); - if (yaffs_SetAttributes(yaffs_InodeToObject(inode), attr) == - YAFFS_OK) { - error = 0; - } else { - error = -EPERM; - } - yaffs_GrossUnlock(dev); - if (!error) - error = inode_setattr(inode, attr); - } - return error; -} - -#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) -static int yaffs_statfs(struct dentry *dentry, struct kstatfs *buf) -{ - yaffs_Device *dev = yaffs_DentryToObject(dentry)->myDev; - struct super_block *sb = dentry->d_sb; -#elif (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) -static int yaffs_statfs(struct super_block *sb, struct kstatfs *buf) -{ - yaffs_Device *dev = yaffs_SuperToDevice(sb); -#else -static int yaffs_statfs(struct super_block *sb, struct statfs *buf) -{ - yaffs_Device *dev = yaffs_SuperToDevice(sb); -#endif - - T(YAFFS_TRACE_OS, ("yaffs_statfs\n")); - - yaffs_GrossLock(dev); - - buf->f_type = YAFFS_MAGIC; - buf->f_bsize = sb->s_blocksize; - buf->f_namelen = 255; - - if (dev->nDataBytesPerChunk & (dev->nDataBytesPerChunk - 1)) { - /* Do this if chunk size is not a power of 2 */ - - uint64_t bytesInDev; - uint64_t bytesFree; - - bytesInDev = ((uint64_t)((dev->endBlock - dev->startBlock + 1))) * - ((uint64_t)(dev->nChunksPerBlock * dev->nDataBytesPerChunk)); - - do_div(bytesInDev, sb->s_blocksize); /* bytesInDev becomes the number of blocks */ - buf->f_blocks = bytesInDev; - - bytesFree = ((uint64_t)(yaffs_GetNumberOfFreeChunks(dev))) * - ((uint64_t)(dev->nDataBytesPerChunk)); - - do_div(bytesFree, sb->s_blocksize); - - buf->f_bfree = bytesFree; - - } else if (sb->s_blocksize > dev->nDataBytesPerChunk) { - - buf->f_blocks = - (dev->endBlock - dev->startBlock + 1) * - dev->nChunksPerBlock / - (sb->s_blocksize / dev->nDataBytesPerChunk); - buf->f_bfree = - yaffs_GetNumberOfFreeChunks(dev) / - (sb->s_blocksize / dev->nDataBytesPerChunk); - } else { - buf->f_blocks = - (dev->endBlock - dev->startBlock + 1) * - dev->nChunksPerBlock * - (dev->nDataBytesPerChunk / sb->s_blocksize); - - buf->f_bfree = - yaffs_GetNumberOfFreeChunks(dev) * - (dev->nDataBytesPerChunk / sb->s_blocksize); - } - - buf->f_files = 0; - buf->f_ffree = 0; - buf->f_bavail = buf->f_bfree; - - yaffs_GrossUnlock(dev); - return 0; -} - - -static int yaffs_do_sync_fs(struct super_block *sb) -{ - - yaffs_Device *dev = yaffs_SuperToDevice(sb); - T(YAFFS_TRACE_OS, ("yaffs_do_sync_fs\n")); - - if (sb->s_dirt) { - yaffs_GrossLock(dev); - - if (dev) { - yaffs_FlushEntireDeviceCache(dev); - yaffs_CheckpointSave(dev); - } - - yaffs_GrossUnlock(dev); - - sb->s_dirt = 0; - } - return 0; -} - - -#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) -static void yaffs_write_super(struct super_block *sb) -#else -static int yaffs_write_super(struct super_block *sb) -#endif -{ - - T(YAFFS_TRACE_OS, ("yaffs_write_super\n")); - if (yaffs_auto_checkpoint >= 2) - yaffs_do_sync_fs(sb); -#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 18)) - return 0; -#endif -} - - -#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) -static int yaffs_sync_fs(struct super_block *sb, int wait) -#else -static int yaffs_sync_fs(struct super_block *sb) -#endif -{ - T(YAFFS_TRACE_OS, ("yaffs_sync_fs\n")); - - if (yaffs_auto_checkpoint >= 1) - yaffs_do_sync_fs(sb); - - return 0; -} - -#ifdef YAFFS_USE_OWN_IGET - -static struct inode *yaffs_iget(struct super_block *sb, unsigned long ino) -{ - struct inode *inode; - yaffs_Object *obj; - yaffs_Device *dev = yaffs_SuperToDevice(sb); - - T(YAFFS_TRACE_OS, - ("yaffs_iget for %lu\n", ino)); - - inode = iget_locked(sb, ino); - if (!inode) - return ERR_PTR(-ENOMEM); - if (!(inode->i_state & I_NEW)) - return inode; - - /* NB This is called as a side effect of other functions, but - * we had to release the lock to prevent deadlocks, so - * need to lock again. - */ - - yaffs_GrossLock(dev); - - obj = yaffs_FindObjectByNumber(dev, inode->i_ino); - - yaffs_FillInodeFromObject(inode, obj); - - yaffs_GrossUnlock(dev); - - unlock_new_inode(inode); - return inode; -} - -#else - -static void yaffs_read_inode(struct inode *inode) -{ - /* NB This is called as a side effect of other functions, but - * we had to release the lock to prevent deadlocks, so - * need to lock again. - */ - - yaffs_Object *obj; - yaffs_Device *dev = yaffs_SuperToDevice(inode->i_sb); - - T(YAFFS_TRACE_OS, - ("yaffs_read_inode for %d\n", (int)inode->i_ino)); - - yaffs_GrossLock(dev); - - obj = yaffs_FindObjectByNumber(dev, inode->i_ino); - - yaffs_FillInodeFromObject(inode, obj); - - yaffs_GrossUnlock(dev); -} - -#endif - -static YLIST_HEAD(yaffs_dev_list); - -#if 0 /* not used */ -static int yaffs_remount_fs(struct super_block *sb, int *flags, char *data) -{ - yaffs_Device *dev = yaffs_SuperToDevice(sb); - - if (*flags & MS_RDONLY) { - struct mtd_info *mtd = yaffs_SuperToDevice(sb)->genericDevice; - - T(YAFFS_TRACE_OS, - ("yaffs_remount_fs: %s: RO\n", dev->name)); - - yaffs_GrossLock(dev); - - yaffs_FlushEntireDeviceCache(dev); - - yaffs_CheckpointSave(dev); - - if (mtd->sync) - mtd->sync(mtd); - - yaffs_GrossUnlock(dev); - } else { - T(YAFFS_TRACE_OS, - ("yaffs_remount_fs: %s: RW\n", dev->name)); - } - - return 0; -} -#endif - -static void yaffs_put_super(struct super_block *sb) -{ - yaffs_Device *dev = yaffs_SuperToDevice(sb); - - T(YAFFS_TRACE_OS, ("yaffs_put_super\n")); - - yaffs_GrossLock(dev); - - yaffs_FlushEntireDeviceCache(dev); - - yaffs_CheckpointSave(dev); - - if (dev->putSuperFunc) - dev->putSuperFunc(sb); - - yaffs_Deinitialise(dev); - - yaffs_GrossUnlock(dev); - - /* we assume this is protected by lock_kernel() in mount/umount */ - ylist_del(&dev->devList); - - if (dev->spareBuffer) { - YFREE(dev->spareBuffer); - dev->spareBuffer = NULL; - } - - kfree(dev); -} - - -static void yaffs_MTDPutSuper(struct super_block *sb) -{ - struct mtd_info *mtd = yaffs_SuperToDevice(sb)->genericDevice; - - if (mtd->sync) - mtd->sync(mtd); - - put_mtd_device(mtd); -} - - -static void yaffs_MarkSuperBlockDirty(void *vsb) -{ - struct super_block *sb = (struct super_block *)vsb; - - T(YAFFS_TRACE_OS, ("yaffs_MarkSuperBlockDirty() sb = %p\n", sb)); - if (sb) - sb->s_dirt = 1; -} - -typedef struct { - int inband_tags; - int skip_checkpoint_read; - int skip_checkpoint_write; - int no_cache; -} yaffs_options; - -#define MAX_OPT_LEN 20 -static int yaffs_parse_options(yaffs_options *options, const char *options_str) -{ - char cur_opt[MAX_OPT_LEN + 1]; - int p; - int error = 0; - - /* Parse through the options which is a comma seperated list */ - - while (options_str && *options_str && !error) { - memset(cur_opt, 0, MAX_OPT_LEN + 1); - p = 0; - - while (*options_str && *options_str != ',') { - if (p < MAX_OPT_LEN) { - cur_opt[p] = *options_str; - p++; - } - options_str++; - } - - if (!strcmp(cur_opt, "inband-tags")) - options->inband_tags = 1; - else if (!strcmp(cur_opt, "no-cache")) - options->no_cache = 1; - else if (!strcmp(cur_opt, "no-checkpoint-read")) - options->skip_checkpoint_read = 1; - else if (!strcmp(cur_opt, "no-checkpoint-write")) - options->skip_checkpoint_write = 1; - else if (!strcmp(cur_opt, "no-checkpoint")) { - options->skip_checkpoint_read = 1; - options->skip_checkpoint_write = 1; - } else { - printk(KERN_INFO "yaffs: Bad mount option \"%s\"\n", - cur_opt); - error = 1; - } - } - - return error; -} - -static struct super_block *yaffs_internal_read_super(int yaffsVersion, - struct super_block *sb, - void *data, int silent) -{ - int nBlocks; - struct inode *inode = NULL; - struct dentry *root; - yaffs_Device *dev = 0; - char devname_buf[BDEVNAME_SIZE + 1]; - struct mtd_info *mtd; - int err; - char *data_str = (char *)data; - - yaffs_options options; - - sb->s_magic = YAFFS_MAGIC; - sb->s_op = &yaffs_super_ops; - sb->s_flags |= MS_NOATIME; - - if (!sb) - printk(KERN_INFO "yaffs: sb is NULL\n"); - else if (!sb->s_dev) - printk(KERN_INFO "yaffs: sb->s_dev is NULL\n"); - else if (!yaffs_devname(sb, devname_buf)) - printk(KERN_INFO "yaffs: devname is NULL\n"); - else - printk(KERN_INFO "yaffs: dev is %d name is \"%s\"\n", - sb->s_dev, - yaffs_devname(sb, devname_buf)); - - if (!data_str) - data_str = ""; - - printk(KERN_INFO "yaffs: passed flags \"%s\"\n", data_str); - - memset(&options, 0, sizeof(options)); - - if (yaffs_parse_options(&options, data_str)) { - /* Option parsing failed */ - return NULL; - } - - - sb->s_blocksize = PAGE_CACHE_SIZE; - sb->s_blocksize_bits = PAGE_CACHE_SHIFT; - T(YAFFS_TRACE_OS, ("yaffs_read_super: Using yaffs%d\n", yaffsVersion)); - T(YAFFS_TRACE_OS, - ("yaffs_read_super: block size %d\n", (int)(sb->s_blocksize))); - -#ifdef CONFIG_YAFFS_DISABLE_WRITE_VERIFY - T(YAFFS_TRACE_OS, - ("yaffs: Write verification disabled. All guarantees " - "null and void\n")); -#endif - - T(YAFFS_TRACE_ALWAYS, ("yaffs: Attempting MTD mount on %u.%u, " - "\"%s\"\n", - MAJOR(sb->s_dev), MINOR(sb->s_dev), - yaffs_devname(sb, devname_buf))); - - /* Check it's an mtd device..... */ - if (MAJOR(sb->s_dev) != MTD_BLOCK_MAJOR) - return NULL; /* This isn't an mtd device */ - - /* Get the device */ - mtd = get_mtd_device(NULL, MINOR(sb->s_dev)); - if (!mtd) { - T(YAFFS_TRACE_ALWAYS, - ("yaffs: MTD device #%u doesn't appear to exist\n", - MINOR(sb->s_dev))); - return NULL; - } - /* Check it's NAND */ - if (mtd->type != MTD_NANDFLASH) { - T(YAFFS_TRACE_ALWAYS, - ("yaffs: MTD device is not NAND it's type %d\n", mtd->type)); - return NULL; - } - - T(YAFFS_TRACE_OS, (" erase %p\n", mtd->erase)); - T(YAFFS_TRACE_OS, (" read %p\n", mtd->read)); - T(YAFFS_TRACE_OS, (" write %p\n", mtd->write)); - T(YAFFS_TRACE_OS, (" readoob %p\n", mtd->read_oob)); - T(YAFFS_TRACE_OS, (" writeoob %p\n", mtd->write_oob)); - T(YAFFS_TRACE_OS, (" block_isbad %p\n", mtd->block_isbad)); - T(YAFFS_TRACE_OS, (" block_markbad %p\n", mtd->block_markbad)); - T(YAFFS_TRACE_OS, (" %s %d\n", WRITE_SIZE_STR, WRITE_SIZE(mtd))); - T(YAFFS_TRACE_OS, (" oobsize %d\n", mtd->oobsize)); - T(YAFFS_TRACE_OS, (" erasesize %d\n", mtd->erasesize)); -#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 29) - T(YAFFS_TRACE_OS, (" size %u\n", mtd->size)); -#else - T(YAFFS_TRACE_OS, (" size %lld\n", mtd->size)); -#endif - -#ifdef CONFIG_YAFFS_AUTO_YAFFS2 - - if (yaffsVersion == 1 && WRITE_SIZE(mtd) >= 2048) { - T(YAFFS_TRACE_ALWAYS, ("yaffs: auto selecting yaffs2\n")); - yaffsVersion = 2; - } - - /* Added NCB 26/5/2006 for completeness */ - if (yaffsVersion == 2 && !options.inband_tags && WRITE_SIZE(mtd) == 512) { - T(YAFFS_TRACE_ALWAYS, ("yaffs: auto selecting yaffs1\n")); - yaffsVersion = 1; - } - -#endif - - if (yaffsVersion == 2) { - /* Check for version 2 style functions */ - if (!mtd->erase || - !mtd->block_isbad || - !mtd->block_markbad || - !mtd->read || - !mtd->write || -#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) - !mtd->read_oob || !mtd->write_oob) { -#else - !mtd->write_ecc || - !mtd->read_ecc || !mtd->read_oob || !mtd->write_oob) { -#endif - T(YAFFS_TRACE_ALWAYS, - ("yaffs: MTD device does not support required " - "functions\n"));; - return NULL; - } - - if ((WRITE_SIZE(mtd) < YAFFS_MIN_YAFFS2_CHUNK_SIZE || - mtd->oobsize < YAFFS_MIN_YAFFS2_SPARE_SIZE) && - !options.inband_tags) { - T(YAFFS_TRACE_ALWAYS, - ("yaffs: MTD device does not have the " - "right page sizes\n")); - return NULL; - } - } else { - /* Check for V1 style functions */ - if (!mtd->erase || - !mtd->read || - !mtd->write || -#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) - !mtd->read_oob || !mtd->write_oob) { -#else - !mtd->write_ecc || - !mtd->read_ecc || !mtd->read_oob || !mtd->write_oob) { -#endif - T(YAFFS_TRACE_ALWAYS, - ("yaffs: MTD device does not support required " - "functions\n"));; - return NULL; - } - - if (WRITE_SIZE(mtd) < YAFFS_BYTES_PER_CHUNK || - mtd->oobsize != YAFFS_BYTES_PER_SPARE) { - T(YAFFS_TRACE_ALWAYS, - ("yaffs: MTD device does not support have the " - "right page sizes\n")); - return NULL; - } - } - - /* OK, so if we got here, we have an MTD that's NAND and looks - * like it has the right capabilities - * Set the yaffs_Device up for mtd - */ - -#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) - sb->s_fs_info = dev = kmalloc(sizeof(yaffs_Device), GFP_KERNEL); -#else - sb->u.generic_sbp = dev = kmalloc(sizeof(yaffs_Device), GFP_KERNEL); -#endif - if (!dev) { - /* Deep shit could not allocate device structure */ - T(YAFFS_TRACE_ALWAYS, - ("yaffs_read_super: Failed trying to allocate " - "yaffs_Device. \n")); - return NULL; - } - - memset(dev, 0, sizeof(yaffs_Device)); - dev->genericDevice = mtd; - dev->name = mtd->name; - - /* Set up the memory size parameters.... */ - - nBlocks = YCALCBLOCKS(mtd->size, (YAFFS_CHUNKS_PER_BLOCK * YAFFS_BYTES_PER_CHUNK)); - - dev->startBlock = 0; - dev->endBlock = nBlocks - 1; - dev->nChunksPerBlock = YAFFS_CHUNKS_PER_BLOCK; - dev->totalBytesPerChunk = YAFFS_BYTES_PER_CHUNK; - dev->nReservedBlocks = 5; - dev->nShortOpCaches = (options.no_cache) ? 0 : 10; - dev->inbandTags = options.inband_tags; - - /* ... and the functions. */ - if (yaffsVersion == 2) { - dev->writeChunkWithTagsToNAND = - nandmtd2_WriteChunkWithTagsToNAND; - dev->readChunkWithTagsFromNAND = - nandmtd2_ReadChunkWithTagsFromNAND; - dev->markNANDBlockBad = nandmtd2_MarkNANDBlockBad; - dev->queryNANDBlock = nandmtd2_QueryNANDBlock; - dev->spareBuffer = YMALLOC(mtd->oobsize); - dev->isYaffs2 = 1; -#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) - dev->totalBytesPerChunk = mtd->writesize; - dev->nChunksPerBlock = mtd->erasesize / mtd->writesize; -#else - dev->totalBytesPerChunk = mtd->oobblock; - dev->nChunksPerBlock = mtd->erasesize / mtd->oobblock; -#endif - nBlocks = YCALCBLOCKS(mtd->size, mtd->erasesize); - - dev->startBlock = 0; - dev->endBlock = nBlocks - 1; - } else { -#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) - /* use the MTD interface in yaffs_mtdif1.c */ - dev->writeChunkWithTagsToNAND = - nandmtd1_WriteChunkWithTagsToNAND; - dev->readChunkWithTagsFromNAND = - nandmtd1_ReadChunkWithTagsFromNAND; - dev->markNANDBlockBad = nandmtd1_MarkNANDBlockBad; - dev->queryNANDBlock = nandmtd1_QueryNANDBlock; -#else - dev->writeChunkToNAND = nandmtd_WriteChunkToNAND; - dev->readChunkFromNAND = nandmtd_ReadChunkFromNAND; -#endif - dev->isYaffs2 = 0; - } - /* ... and common functions */ - dev->eraseBlockInNAND = nandmtd_EraseBlockInNAND; - dev->initialiseNAND = nandmtd_InitialiseNAND; - - dev->putSuperFunc = yaffs_MTDPutSuper; - - dev->superBlock = (void *)sb; - dev->markSuperBlockDirty = yaffs_MarkSuperBlockDirty; - - -#ifndef CONFIG_YAFFS_DOES_ECC - dev->useNANDECC = 1; -#endif - -#ifdef CONFIG_YAFFS_DISABLE_WIDE_TNODES - dev->wideTnodesDisabled = 1; -#endif - - dev->skipCheckpointRead = options.skip_checkpoint_read; - dev->skipCheckpointWrite = options.skip_checkpoint_write; - - /* we assume this is protected by lock_kernel() in mount/umount */ - ylist_add_tail(&dev->devList, &yaffs_dev_list); - - init_MUTEX(&dev->grossLock); - - yaffs_GrossLock(dev); - - err = yaffs_GutsInitialise(dev); - - T(YAFFS_TRACE_OS, - ("yaffs_read_super: guts initialised %s\n", - (err == YAFFS_OK) ? "OK" : "FAILED")); - - /* Release lock before yaffs_get_inode() */ - yaffs_GrossUnlock(dev); - - /* Create root inode */ - if (err == YAFFS_OK) - inode = yaffs_get_inode(sb, S_IFDIR | 0755, 0, - yaffs_Root(dev)); - - if (!inode) - return NULL; - - inode->i_op = &yaffs_dir_inode_operations; - inode->i_fop = &yaffs_dir_operations; - - T(YAFFS_TRACE_OS, ("yaffs_read_super: got root inode\n")); - - root = d_alloc_root(inode); - - T(YAFFS_TRACE_OS, ("yaffs_read_super: d_alloc_root done\n")); - - if (!root) { - iput(inode); - return NULL; - } - sb->s_root = root; - sb->s_dirt = !dev->isCheckpointed; - T(YAFFS_TRACE_ALWAYS, - ("yaffs_read_super: isCheckpointed %d\n", dev->isCheckpointed)); - - T(YAFFS_TRACE_OS, ("yaffs_read_super: done\n")); - return sb; -} - - -#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) -static int yaffs_internal_read_super_mtd(struct super_block *sb, void *data, - int silent) -{ - return yaffs_internal_read_super(1, sb, data, silent) ? 0 : -EINVAL; -} - -#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) -static int yaffs_read_super(struct file_system_type *fs, - int flags, const char *dev_name, - void *data, struct vfsmount *mnt) -{ - - return get_sb_bdev(fs, flags, dev_name, data, - yaffs_internal_read_super_mtd, mnt); -} -#else -static struct super_block *yaffs_read_super(struct file_system_type *fs, - int flags, const char *dev_name, - void *data) -{ - - return get_sb_bdev(fs, flags, dev_name, data, - yaffs_internal_read_super_mtd); -} -#endif - -static struct file_system_type yaffs_fs_type = { - .owner = THIS_MODULE, - .name = "yaffs", - .get_sb = yaffs_read_super, - .kill_sb = kill_block_super, - .fs_flags = FS_REQUIRES_DEV, -}; -#else -static struct super_block *yaffs_read_super(struct super_block *sb, void *data, - int silent) -{ - return yaffs_internal_read_super(1, sb, data, silent); -} - -static DECLARE_FSTYPE(yaffs_fs_type, "yaffs", yaffs_read_super, - FS_REQUIRES_DEV); -#endif - - -#ifdef CONFIG_YAFFS_YAFFS2 - -#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) -static int yaffs2_internal_read_super_mtd(struct super_block *sb, void *data, - int silent) -{ - return yaffs_internal_read_super(2, sb, data, silent) ? 0 : -EINVAL; -} - -#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) -static int yaffs2_read_super(struct file_system_type *fs, - int flags, const char *dev_name, void *data, - struct vfsmount *mnt) -{ - return get_sb_bdev(fs, flags, dev_name, data, - yaffs2_internal_read_super_mtd, mnt); -} -#else -static struct super_block *yaffs2_read_super(struct file_system_type *fs, - int flags, const char *dev_name, - void *data) -{ - - return get_sb_bdev(fs, flags, dev_name, data, - yaffs2_internal_read_super_mtd); -} -#endif - -static struct file_system_type yaffs2_fs_type = { - .owner = THIS_MODULE, - .name = "yaffs2", - .get_sb = yaffs2_read_super, - .kill_sb = kill_block_super, - .fs_flags = FS_REQUIRES_DEV, -}; -#else -static struct super_block *yaffs2_read_super(struct super_block *sb, - void *data, int silent) -{ - return yaffs_internal_read_super(2, sb, data, silent); -} - -static DECLARE_FSTYPE(yaffs2_fs_type, "yaffs2", yaffs2_read_super, - FS_REQUIRES_DEV); -#endif - -#endif /* CONFIG_YAFFS_YAFFS2 */ - -static struct proc_dir_entry *my_proc_entry; - -static char *yaffs_dump_dev(char *buf, yaffs_Device * dev) -{ - buf += sprintf(buf, "startBlock......... %d\n", dev->startBlock); - buf += sprintf(buf, "endBlock........... %d\n", dev->endBlock); - buf += sprintf(buf, "totalBytesPerChunk. %d\n", dev->totalBytesPerChunk); - buf += sprintf(buf, "nDataBytesPerChunk. %d\n", dev->nDataBytesPerChunk); - buf += sprintf(buf, "chunkGroupBits..... %d\n", dev->chunkGroupBits); - buf += sprintf(buf, "chunkGroupSize..... %d\n", dev->chunkGroupSize); - buf += sprintf(buf, "nErasedBlocks...... %d\n", dev->nErasedBlocks); - buf += sprintf(buf, "nReservedBlocks.... %d\n", dev->nReservedBlocks); - buf += sprintf(buf, "blocksInCheckpoint. %d\n", dev->blocksInCheckpoint); - buf += sprintf(buf, "nTnodesCreated..... %d\n", dev->nTnodesCreated); - buf += sprintf(buf, "nFreeTnodes........ %d\n", dev->nFreeTnodes); - buf += sprintf(buf, "nObjectsCreated.... %d\n", dev->nObjectsCreated); - buf += sprintf(buf, "nFreeObjects....... %d\n", dev->nFreeObjects); - buf += sprintf(buf, "nFreeChunks........ %d\n", dev->nFreeChunks); - buf += sprintf(buf, "nPageWrites........ %d\n", dev->nPageWrites); - buf += sprintf(buf, "nPageReads......... %d\n", dev->nPageReads); - buf += sprintf(buf, "nBlockErasures..... %d\n", dev->nBlockErasures); - buf += sprintf(buf, "nGCCopies.......... %d\n", dev->nGCCopies); - buf += sprintf(buf, "garbageCollections. %d\n", dev->garbageCollections); - buf += sprintf(buf, "passiveGCs......... %d\n", - dev->passiveGarbageCollections); - buf += sprintf(buf, "nRetriedWrites..... %d\n", dev->nRetriedWrites); - buf += sprintf(buf, "nShortOpCaches..... %d\n", dev->nShortOpCaches); - buf += sprintf(buf, "nRetireBlocks...... %d\n", dev->nRetiredBlocks); - buf += sprintf(buf, "eccFixed........... %d\n", dev->eccFixed); - buf += sprintf(buf, "eccUnfixed......... %d\n", dev->eccUnfixed); - buf += sprintf(buf, "tagsEccFixed....... %d\n", dev->tagsEccFixed); - buf += sprintf(buf, "tagsEccUnfixed..... %d\n", dev->tagsEccUnfixed); - buf += sprintf(buf, "cacheHits.......... %d\n", dev->cacheHits); - buf += sprintf(buf, "nDeletedFiles...... %d\n", dev->nDeletedFiles); - buf += sprintf(buf, "nUnlinkedFiles..... %d\n", dev->nUnlinkedFiles); - buf += - sprintf(buf, "nBackgroudDeletions %d\n", dev->nBackgroundDeletions); - buf += sprintf(buf, "useNANDECC......... %d\n", dev->useNANDECC); - buf += sprintf(buf, "isYaffs2........... %d\n", dev->isYaffs2); - buf += sprintf(buf, "inbandTags......... %d\n", dev->inbandTags); - - return buf; -} - -static int yaffs_proc_read(char *page, - char **start, - off_t offset, int count, int *eof, void *data) -{ - struct ylist_head *item; - char *buf = page; - int step = offset; - int n = 0; - - /* Get proc_file_read() to step 'offset' by one on each sucessive call. - * We use 'offset' (*ppos) to indicate where we are in devList. - * This also assumes the user has posted a read buffer large - * enough to hold the complete output; but that's life in /proc. - */ - - *(int *)start = 1; - - /* Print header first */ - if (step == 0) { - buf += sprintf(buf, "YAFFS built:" __DATE__ " " __TIME__ - "\n%s\n%s\n", yaffs_fs_c_version, - yaffs_guts_c_version); - } - - /* hold lock_kernel while traversing yaffs_dev_list */ - lock_kernel(); - - /* Locate and print the Nth entry. Order N-squared but N is small. */ - ylist_for_each(item, &yaffs_dev_list) { - yaffs_Device *dev = ylist_entry(item, yaffs_Device, devList); - if (n < step) { - n++; - continue; - } - buf += sprintf(buf, "\nDevice %d \"%s\"\n", n, dev->name); - buf = yaffs_dump_dev(buf, dev); - break; - } - unlock_kernel(); - - return buf - page < count ? buf - page : count; -} - -/** - * Set the verbosity of the warnings and error messages. - * - * Note that the names can only be a..z or _ with the current code. - */ - -static struct { - char *mask_name; - unsigned mask_bitfield; -} mask_flags[] = { - {"allocate", YAFFS_TRACE_ALLOCATE}, - {"always", YAFFS_TRACE_ALWAYS}, - {"bad_blocks", YAFFS_TRACE_BAD_BLOCKS}, - {"buffers", YAFFS_TRACE_BUFFERS}, - {"bug", YAFFS_TRACE_BUG}, - {"checkpt", YAFFS_TRACE_CHECKPOINT}, - {"deletion", YAFFS_TRACE_DELETION}, - {"erase", YAFFS_TRACE_ERASE}, - {"error", YAFFS_TRACE_ERROR}, - {"gc_detail", YAFFS_TRACE_GC_DETAIL}, - {"gc", YAFFS_TRACE_GC}, - {"mtd", YAFFS_TRACE_MTD}, - {"nandaccess", YAFFS_TRACE_NANDACCESS}, - {"os", YAFFS_TRACE_OS}, - {"scan_debug", YAFFS_TRACE_SCAN_DEBUG}, - {"scan", YAFFS_TRACE_SCAN}, - {"tracing", YAFFS_TRACE_TRACING}, - - {"verify", YAFFS_TRACE_VERIFY}, - {"verify_nand", YAFFS_TRACE_VERIFY_NAND}, - {"verify_full", YAFFS_TRACE_VERIFY_FULL}, - {"verify_all", YAFFS_TRACE_VERIFY_ALL}, - - {"write", YAFFS_TRACE_WRITE}, - {"all", 0xffffffff}, - {"none", 0}, - {NULL, 0}, -}; - -#define MAX_MASK_NAME_LENGTH 40 -static int yaffs_proc_write(struct file *file, const char *buf, - unsigned long count, void *data) -{ - unsigned rg = 0, mask_bitfield; - char *end; - char *mask_name; - const char *x; - char substring[MAX_MASK_NAME_LENGTH + 1]; - int i; - int done = 0; - int add, len = 0; - int pos = 0; - - rg = yaffs_traceMask; - - while (!done && (pos < count)) { - done = 1; - while ((pos < count) && isspace(buf[pos])) - pos++; - - switch (buf[pos]) { - case '+': - case '-': - case '=': - add = buf[pos]; - pos++; - break; - - default: - add = ' '; - break; - } - mask_name = NULL; - - mask_bitfield = simple_strtoul(buf + pos, &end, 0); - - if (end > buf + pos) { - mask_name = "numeral"; - len = end - (buf + pos); - pos += len; - done = 0; - } else { - for (x = buf + pos, i = 0; - (*x == '_' || (*x >= 'a' && *x <= 'z')) && - i < MAX_MASK_NAME_LENGTH; x++, i++, pos++) - substring[i] = *x; - substring[i] = '\0'; - - for (i = 0; mask_flags[i].mask_name != NULL; i++) { - if (strcmp(substring, mask_flags[i].mask_name) == 0) { - mask_name = mask_flags[i].mask_name; - mask_bitfield = mask_flags[i].mask_bitfield; - done = 0; - break; - } - } - } - - if (mask_name != NULL) { - done = 0; - switch (add) { - case '-': - rg &= ~mask_bitfield; - break; - case '+': - rg |= mask_bitfield; - break; - case '=': - rg = mask_bitfield; - break; - default: - rg |= mask_bitfield; - break; - } - } - } - - yaffs_traceMask = rg | YAFFS_TRACE_ALWAYS; - - printk(KERN_DEBUG "new trace = 0x%08X\n", yaffs_traceMask); - - if (rg & YAFFS_TRACE_ALWAYS) { - for (i = 0; mask_flags[i].mask_name != NULL; i++) { - char flag; - flag = ((rg & mask_flags[i].mask_bitfield) == mask_flags[i].mask_bitfield) ? '+' : '-'; - printk(KERN_DEBUG "%c%s\n", flag, mask_flags[i].mask_name); - } - } - - return count; -} - -/* Stuff to handle installation of file systems */ -struct file_system_to_install { - struct file_system_type *fst; - int installed; -}; - -static struct file_system_to_install fs_to_install[] = { - {&yaffs_fs_type, 0}, - {&yaffs2_fs_type, 0}, - {NULL, 0} -}; - -static int __init init_yaffs_fs(void) -{ - int error = 0; - struct file_system_to_install *fsinst; - - T(YAFFS_TRACE_ALWAYS, - ("yaffs " __DATE__ " " __TIME__ " Installing. \n")); - - /* Install the proc_fs entry */ - my_proc_entry = create_proc_entry("yaffs", - S_IRUGO | S_IFREG, - YPROC_ROOT); - - if (my_proc_entry) { - my_proc_entry->write_proc = yaffs_proc_write; - my_proc_entry->read_proc = yaffs_proc_read; - my_proc_entry->data = NULL; - } else - return -ENOMEM; - - /* Now add the file system entries */ - - fsinst = fs_to_install; - - while (fsinst->fst && !error) { - error = register_filesystem(fsinst->fst); - if (!error) - fsinst->installed = 1; - fsinst++; - } - - /* Any errors? uninstall */ - if (error) { - fsinst = fs_to_install; - - while (fsinst->fst) { - if (fsinst->installed) { - unregister_filesystem(fsinst->fst); - fsinst->installed = 0; - } - fsinst++; - } - } - - return error; -} - -static void __exit exit_yaffs_fs(void) -{ - - struct file_system_to_install *fsinst; - - T(YAFFS_TRACE_ALWAYS, ("yaffs " __DATE__ " " __TIME__ - " removing. \n")); - - remove_proc_entry("yaffs", YPROC_ROOT); - - fsinst = fs_to_install; - - while (fsinst->fst) { - if (fsinst->installed) { - unregister_filesystem(fsinst->fst); - fsinst->installed = 0; - } - fsinst++; - } -} - -module_init(init_yaffs_fs) -module_exit(exit_yaffs_fs) - -MODULE_DESCRIPTION("YAFFS2 - a NAND specific flash file system"); -MODULE_AUTHOR("Charles Manning, Aleph One Ltd., 2002-2006"); -MODULE_LICENSE("GPL"); diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_getblockinfo.h b/target/linux/generic/files/fs/yaffs2/yaffs_getblockinfo.h index 5b0a1ac24b..432441bb89 100644 --- a/target/linux/generic/files/fs/yaffs2/yaffs_getblockinfo.h +++ b/target/linux/generic/files/fs/yaffs2/yaffs_getblockinfo.h @@ -1,7 +1,7 @@ /* * YAFFS: Yet another Flash File System . A NAND-flash specific file system. * - * Copyright (C) 2002-2007 Aleph One Ltd. + * Copyright (C) 2002-2010 Aleph One Ltd. * for Toby Churchill Ltd and Brightstar Engineering * * Created by Charles Manning <charles@aleph1.co.uk> @@ -17,18 +17,19 @@ #define __YAFFS_GETBLOCKINFO_H__ #include "yaffs_guts.h" +#include "yaffs_trace.h" /* Function to manipulate block info */ -static Y_INLINE yaffs_BlockInfo *yaffs_GetBlockInfo(yaffs_Device * dev, int blk) +static Y_INLINE yaffs_block_info_t *yaffs_get_block_info(yaffs_dev_t * dev, int blk) { - if (blk < dev->internalStartBlock || blk > dev->internalEndBlock) { + if (blk < dev->internal_start_block || blk > dev->internal_end_block) { T(YAFFS_TRACE_ERROR, (TSTR ("**>> yaffs: getBlockInfo block %d is not valid" TENDSTR), blk)); YBUG(); } - return &dev->blockInfo[blk - dev->internalStartBlock]; + return &dev->block_info[blk - dev->internal_start_block]; } #endif diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_guts.c b/target/linux/generic/files/fs/yaffs2/yaffs_guts.c index d89b87af44..36e11f53c8 100644 --- a/target/linux/generic/files/fs/yaffs2/yaffs_guts.c +++ b/target/linux/generic/files/fs/yaffs2/yaffs_guts.c @@ -1,7 +1,7 @@ /* * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. * - * Copyright (C) 2002-2007 Aleph One Ltd. + * Copyright (C) 2002-2010 Aleph One Ltd. * for Toby Churchill Ltd and Brightstar Engineering * * Created by Charles Manning <charles@aleph1.co.uk> @@ -10,11 +10,8 @@ * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. */ - -const char *yaffs_guts_c_version = - "$Id: yaffs_guts.c,v 1.82 2009-03-09 04:24:17 charles Exp $"; - #include "yportenv.h" +#include "yaffs_trace.h" #include "yaffsinterface.h" #include "yaffs_guts.h" @@ -22,118 +19,109 @@ const char *yaffs_guts_c_version = #include "yaffs_getblockinfo.h" #include "yaffs_tagscompat.h" -#ifndef CONFIG_YAFFS_USE_OWN_SORT -#include "yaffs_qsort.h" -#endif + #include "yaffs_nand.h" -#include "yaffs_checkptrw.h" +#include "yaffs_yaffs1.h" +#include "yaffs_yaffs2.h" +#include "yaffs_bitmap.h" +#include "yaffs_verify.h" #include "yaffs_nand.h" #include "yaffs_packedtags2.h" +#include "yaffs_nameval.h" +#include "yaffs_allocator.h" -#define YAFFS_PASSIVE_GC_CHUNKS 2 +/* Note YAFFS_GC_GOOD_ENOUGH must be <= YAFFS_GC_PASSIVE_THRESHOLD */ +#define YAFFS_GC_GOOD_ENOUGH 2 +#define YAFFS_GC_PASSIVE_THRESHOLD 4 #include "yaffs_ecc.h" + /* Robustification (if it ever comes about...) */ -static void yaffs_RetireBlock(yaffs_Device *dev, int blockInNAND); -static void yaffs_HandleWriteChunkError(yaffs_Device *dev, int chunkInNAND, +static void yaffs_retire_block(yaffs_dev_t *dev, int flash_block); +static void yaffs_handle_chunk_wr_error(yaffs_dev_t *dev, int nand_chunk, int erasedOk); -static void yaffs_HandleWriteChunkOk(yaffs_Device *dev, int chunkInNAND, +static void yaffs_handle_chunk_wr_ok(yaffs_dev_t *dev, int nand_chunk, const __u8 *data, - const yaffs_ExtendedTags *tags); -static void yaffs_HandleUpdateChunk(yaffs_Device *dev, int chunkInNAND, - const yaffs_ExtendedTags *tags); + const yaffs_ext_tags *tags); +static void yaffs_handle_chunk_update(yaffs_dev_t *dev, int nand_chunk, + const yaffs_ext_tags *tags); /* Other local prototypes */ -static int yaffs_UnlinkObject(yaffs_Object *obj); -static int yaffs_ObjectHasCachedWriteData(yaffs_Object *obj); - -static void yaffs_HardlinkFixup(yaffs_Device *dev, yaffs_Object *hardList); +static void yaffs_update_parent(yaffs_obj_t *obj); +static int yaffs_unlink_obj(yaffs_obj_t *obj); +static int yaffs_obj_cache_dirty(yaffs_obj_t *obj); -static int yaffs_WriteNewChunkWithTagsToNAND(yaffs_Device *dev, +static int yaffs_write_new_chunk(yaffs_dev_t *dev, const __u8 *buffer, - yaffs_ExtendedTags *tags, + yaffs_ext_tags *tags, int useReserve); -static int yaffs_PutChunkIntoFile(yaffs_Object *in, int chunkInInode, - int chunkInNAND, int inScan); -static yaffs_Object *yaffs_CreateNewObject(yaffs_Device *dev, int number, - yaffs_ObjectType type); -static void yaffs_AddObjectToDirectory(yaffs_Object *directory, - yaffs_Object *obj); -static int yaffs_UpdateObjectHeader(yaffs_Object *in, const YCHAR *name, - int force, int isShrink, int shadows); -static void yaffs_RemoveObjectFromDirectory(yaffs_Object *obj); -static int yaffs_CheckStructures(void); -static int yaffs_DeleteWorker(yaffs_Object *in, yaffs_Tnode *tn, __u32 level, - int chunkOffset, int *limit); -static int yaffs_DoGenericObjectDeletion(yaffs_Object *in); -static yaffs_BlockInfo *yaffs_GetBlockInfo(yaffs_Device *dev, int blockNo); +static yaffs_obj_t *yaffs_new_obj(yaffs_dev_t *dev, int number, + yaffs_obj_type type); -static int yaffs_CheckChunkErased(struct yaffs_DeviceStruct *dev, - int chunkInNAND); +static int yaffs_apply_xattrib_mod(yaffs_obj_t *obj, char *buffer, yaffs_xattr_mod *xmod); -static int yaffs_UnlinkWorker(yaffs_Object *obj); +static void yaffs_remove_obj_from_dir(yaffs_obj_t *obj); +static int yaffs_check_structures(void); +static int yaffs_generic_obj_del(yaffs_obj_t *in); -static int yaffs_TagsMatch(const yaffs_ExtendedTags *tags, int objectId, - int chunkInObject); +static int yaffs_check_chunk_erased(struct yaffs_dev_s *dev, + int nand_chunk); -static int yaffs_AllocateChunk(yaffs_Device *dev, int useReserve, - yaffs_BlockInfo **blockUsedPtr); +static int yaffs_unlink_worker(yaffs_obj_t *obj); -static void yaffs_VerifyFreeChunks(yaffs_Device *dev); +static int yaffs_tags_match(const yaffs_ext_tags *tags, int obj_id, + int chunkInObject); -static void yaffs_CheckObjectDetailsLoaded(yaffs_Object *in); +static int yaffs_alloc_chunk(yaffs_dev_t *dev, int useReserve, + yaffs_block_info_t **blockUsedPtr); -static void yaffs_VerifyDirectory(yaffs_Object *directory); -#ifdef YAFFS_PARANOID -static int yaffs_CheckFileSanity(yaffs_Object *in); -#else -#define yaffs_CheckFileSanity(in) -#endif +static void yaffs_check_obj_details_loaded(yaffs_obj_t *in); + +static void yaffs_invalidate_whole_cache(yaffs_obj_t *in); +static void yaffs_invalidate_chunk_cache(yaffs_obj_t *object, int chunk_id); -static void yaffs_InvalidateWholeChunkCache(yaffs_Object *in); -static void yaffs_InvalidateChunkCache(yaffs_Object *object, int chunkId); +static int yaffs_find_chunk_in_file(yaffs_obj_t *in, int inode_chunk, + yaffs_ext_tags *tags); -static void yaffs_InvalidateCheckpoint(yaffs_Device *dev); +static int yaffs_verify_chunk_written(yaffs_dev_t *dev, + int nand_chunk, + const __u8 *data, + yaffs_ext_tags *tags); -static int yaffs_FindChunkInFile(yaffs_Object *in, int chunkInInode, - yaffs_ExtendedTags *tags); -static __u32 yaffs_GetChunkGroupBase(yaffs_Device *dev, yaffs_Tnode *tn, - unsigned pos); -static yaffs_Tnode *yaffs_FindLevel0Tnode(yaffs_Device *dev, - yaffs_FileStructure *fStruct, - __u32 chunkId); +static void yaffs_load_name_from_oh(yaffs_dev_t *dev,YCHAR *name, const YCHAR *ohName, int bufferSize); +static void yaffs_load_oh_from_name(yaffs_dev_t *dev,YCHAR *ohName, const YCHAR *name); /* Function to calculate chunk and offset */ -static void yaffs_AddrToChunk(yaffs_Device *dev, loff_t addr, int *chunkOut, +static void yaffs_addr_to_chunk(yaffs_dev_t *dev, loff_t addr, int *chunkOut, __u32 *offsetOut) { int chunk; __u32 offset; - chunk = (__u32)(addr >> dev->chunkShift); + chunk = (__u32)(addr >> dev->chunk_shift); - if (dev->chunkDiv == 1) { + if (dev->chunk_div == 1) { /* easy power of 2 case */ - offset = (__u32)(addr & dev->chunkMask); + offset = (__u32)(addr & dev->chunk_mask); } else { /* Non power-of-2 case */ loff_t chunkBase; - chunk /= dev->chunkDiv; + chunk /= dev->chunk_div; - chunkBase = ((loff_t)chunk) * dev->nDataBytesPerChunk; + chunkBase = ((loff_t)chunk) * dev->data_bytes_per_chunk; offset = (__u32)(addr - chunkBase); } @@ -172,7 +160,7 @@ static __u32 ShiftsGE(__u32 x) static __u32 Shifts(__u32 x) { - int nShifts; + __u32 nShifts; nShifts = 0; @@ -193,49 +181,49 @@ static __u32 Shifts(__u32 x) * Temporary buffer manipulations. */ -static int yaffs_InitialiseTempBuffers(yaffs_Device *dev) +static int yaffs_init_tmp_buffers(yaffs_dev_t *dev) { int i; __u8 *buf = (__u8 *)1; - memset(dev->tempBuffer, 0, sizeof(dev->tempBuffer)); + memset(dev->temp_buffer, 0, sizeof(dev->temp_buffer)); for (i = 0; buf && i < YAFFS_N_TEMP_BUFFERS; i++) { - dev->tempBuffer[i].line = 0; /* not in use */ - dev->tempBuffer[i].buffer = buf = - YMALLOC_DMA(dev->totalBytesPerChunk); + dev->temp_buffer[i].line = 0; /* not in use */ + dev->temp_buffer[i].buffer = buf = + YMALLOC_DMA(dev->param.total_bytes_per_chunk); } return buf ? YAFFS_OK : YAFFS_FAIL; } -__u8 *yaffs_GetTempBuffer(yaffs_Device *dev, int lineNo) +__u8 *yaffs_get_temp_buffer(yaffs_dev_t *dev, int line_no) { int i, j; - dev->tempInUse++; - if (dev->tempInUse > dev->maxTemp) - dev->maxTemp = dev->tempInUse; + dev->temp_in_use++; + if (dev->temp_in_use > dev->max_temp) + dev->max_temp = dev->temp_in_use; for (i = 0; i < YAFFS_N_TEMP_BUFFERS; i++) { - if (dev->tempBuffer[i].line == 0) { - dev->tempBuffer[i].line = lineNo; - if ((i + 1) > dev->maxTemp) { - dev->maxTemp = i + 1; + if (dev->temp_buffer[i].line == 0) { + dev->temp_buffer[i].line = line_no; + if ((i + 1) > dev->max_temp) { + dev->max_temp = i + 1; for (j = 0; j <= i; j++) - dev->tempBuffer[j].maxLine = - dev->tempBuffer[j].line; + dev->temp_buffer[j].max_line = + dev->temp_buffer[j].line; } - return dev->tempBuffer[i].buffer; + return dev->temp_buffer[i].buffer; } } T(YAFFS_TRACE_BUFFERS, (TSTR("Out of temp buffers at line %d, other held by lines:"), - lineNo)); + line_no)); for (i = 0; i < YAFFS_N_TEMP_BUFFERS; i++) - T(YAFFS_TRACE_BUFFERS, (TSTR(" %d "), dev->tempBuffer[i].line)); + T(YAFFS_TRACE_BUFFERS, (TSTR(" %d "), dev->temp_buffer[i].line)); T(YAFFS_TRACE_BUFFERS, (TSTR(" " TENDSTR))); @@ -244,21 +232,21 @@ __u8 *yaffs_GetTempBuffer(yaffs_Device *dev, int lineNo) * This is not good. */ - dev->unmanagedTempAllocations++; - return YMALLOC(dev->nDataBytesPerChunk); + dev->unmanaged_buffer_allocs++; + return YMALLOC(dev->data_bytes_per_chunk); } -void yaffs_ReleaseTempBuffer(yaffs_Device *dev, __u8 *buffer, - int lineNo) +void yaffs_release_temp_buffer(yaffs_dev_t *dev, __u8 *buffer, + int line_no) { int i; - dev->tempInUse--; + dev->temp_in_use--; for (i = 0; i < YAFFS_N_TEMP_BUFFERS; i++) { - if (dev->tempBuffer[i].buffer == buffer) { - dev->tempBuffer[i].line = 0; + if (dev->temp_buffer[i].buffer == buffer) { + dev->temp_buffer[i].line = 0; return; } } @@ -267,9 +255,9 @@ void yaffs_ReleaseTempBuffer(yaffs_Device *dev, __u8 *buffer, /* assume it is an unmanaged one. */ T(YAFFS_TRACE_BUFFERS, (TSTR("Releasing unmanaged temp buffer in line %d" TENDSTR), - lineNo)); + line_no)); YFREE(buffer); - dev->unmanagedTempDeallocations++; + dev->unmanaged_buffer_deallocs++; } } @@ -277,21 +265,21 @@ void yaffs_ReleaseTempBuffer(yaffs_Device *dev, __u8 *buffer, /* * Determine if we have a managed buffer. */ -int yaffs_IsManagedTempBuffer(yaffs_Device *dev, const __u8 *buffer) +int yaffs_is_managed_tmp_buffer(yaffs_dev_t *dev, const __u8 *buffer) { int i; for (i = 0; i < YAFFS_N_TEMP_BUFFERS; i++) { - if (dev->tempBuffer[i].buffer == buffer) + if (dev->temp_buffer[i].buffer == buffer) return 1; } - for (i = 0; i < dev->nShortOpCaches; i++) { - if (dev->srCache[i].data == buffer) + for (i = 0; i < dev->param.n_caches; i++) { + if (dev->cache[i].data == buffer) return 1; } - if (buffer == dev->checkpointBuffer) + if (buffer == dev->checkpt_buffer) return 1; T(YAFFS_TRACE_ALWAYS, @@ -299,564 +287,18 @@ int yaffs_IsManagedTempBuffer(yaffs_Device *dev, const __u8 *buffer) return 0; } - - -/* - * Chunk bitmap manipulations - */ - -static Y_INLINE __u8 *yaffs_BlockBits(yaffs_Device *dev, int blk) -{ - if (blk < dev->internalStartBlock || blk > dev->internalEndBlock) { - T(YAFFS_TRACE_ERROR, - (TSTR("**>> yaffs: BlockBits block %d is not valid" TENDSTR), - blk)); - YBUG(); - } - return dev->chunkBits + - (dev->chunkBitmapStride * (blk - dev->internalStartBlock)); -} - -static Y_INLINE void yaffs_VerifyChunkBitId(yaffs_Device *dev, int blk, int chunk) -{ - if (blk < dev->internalStartBlock || blk > dev->internalEndBlock || - chunk < 0 || chunk >= dev->nChunksPerBlock) { - T(YAFFS_TRACE_ERROR, - (TSTR("**>> yaffs: Chunk Id (%d:%d) invalid"TENDSTR), - blk, chunk)); - YBUG(); - } -} - -static Y_INLINE void yaffs_ClearChunkBits(yaffs_Device *dev, int blk) -{ - __u8 *blkBits = yaffs_BlockBits(dev, blk); - - memset(blkBits, 0, dev->chunkBitmapStride); -} - -static Y_INLINE void yaffs_ClearChunkBit(yaffs_Device *dev, int blk, int chunk) -{ - __u8 *blkBits = yaffs_BlockBits(dev, blk); - - yaffs_VerifyChunkBitId(dev, blk, chunk); - - blkBits[chunk / 8] &= ~(1 << (chunk & 7)); -} - -static Y_INLINE void yaffs_SetChunkBit(yaffs_Device *dev, int blk, int chunk) -{ - __u8 *blkBits = yaffs_BlockBits(dev, blk); - - yaffs_VerifyChunkBitId(dev, blk, chunk); - - blkBits[chunk / 8] |= (1 << (chunk & 7)); -} - -static Y_INLINE int yaffs_CheckChunkBit(yaffs_Device *dev, int blk, int chunk) -{ - __u8 *blkBits = yaffs_BlockBits(dev, blk); - yaffs_VerifyChunkBitId(dev, blk, chunk); - - return (blkBits[chunk / 8] & (1 << (chunk & 7))) ? 1 : 0; -} - -static Y_INLINE int yaffs_StillSomeChunkBits(yaffs_Device *dev, int blk) -{ - __u8 *blkBits = yaffs_BlockBits(dev, blk); - int i; - for (i = 0; i < dev->chunkBitmapStride; i++) { - if (*blkBits) - return 1; - blkBits++; - } - return 0; -} - -static int yaffs_CountChunkBits(yaffs_Device *dev, int blk) -{ - __u8 *blkBits = yaffs_BlockBits(dev, blk); - int i; - int n = 0; - for (i = 0; i < dev->chunkBitmapStride; i++) { - __u8 x = *blkBits; - while (x) { - if (x & 1) - n++; - x >>= 1; - } - - blkBits++; - } - return n; -} - /* * Verification code */ -static int yaffs_SkipVerification(yaffs_Device *dev) -{ - return !(yaffs_traceMask & (YAFFS_TRACE_VERIFY | YAFFS_TRACE_VERIFY_FULL)); -} - -static int yaffs_SkipFullVerification(yaffs_Device *dev) -{ - return !(yaffs_traceMask & (YAFFS_TRACE_VERIFY_FULL)); -} - -static int yaffs_SkipNANDVerification(yaffs_Device *dev) -{ - return !(yaffs_traceMask & (YAFFS_TRACE_VERIFY_NAND)); -} - -static const char *blockStateName[] = { -"Unknown", -"Needs scanning", -"Scanning", -"Empty", -"Allocating", -"Full", -"Dirty", -"Checkpoint", -"Collecting", -"Dead" -}; - -static void yaffs_VerifyBlock(yaffs_Device *dev, yaffs_BlockInfo *bi, int n) -{ - int actuallyUsed; - int inUse; - - if (yaffs_SkipVerification(dev)) - return; - - /* Report illegal runtime states */ - if (bi->blockState >= YAFFS_NUMBER_OF_BLOCK_STATES) - T(YAFFS_TRACE_VERIFY, (TSTR("Block %d has undefined state %d"TENDSTR), n, bi->blockState)); - - switch (bi->blockState) { - case YAFFS_BLOCK_STATE_UNKNOWN: - case YAFFS_BLOCK_STATE_SCANNING: - case YAFFS_BLOCK_STATE_NEEDS_SCANNING: - T(YAFFS_TRACE_VERIFY, (TSTR("Block %d has bad run-state %s"TENDSTR), - n, blockStateName[bi->blockState])); - } - - /* Check pages in use and soft deletions are legal */ - - actuallyUsed = bi->pagesInUse - bi->softDeletions; - - if (bi->pagesInUse < 0 || bi->pagesInUse > dev->nChunksPerBlock || - bi->softDeletions < 0 || bi->softDeletions > dev->nChunksPerBlock || - actuallyUsed < 0 || actuallyUsed > dev->nChunksPerBlock) - T(YAFFS_TRACE_VERIFY, (TSTR("Block %d has illegal values pagesInUsed %d softDeletions %d"TENDSTR), - n, bi->pagesInUse, bi->softDeletions)); - - - /* Check chunk bitmap legal */ - inUse = yaffs_CountChunkBits(dev, n); - if (inUse != bi->pagesInUse) - T(YAFFS_TRACE_VERIFY, (TSTR("Block %d has inconsistent values pagesInUse %d counted chunk bits %d"TENDSTR), - n, bi->pagesInUse, inUse)); - - /* Check that the sequence number is valid. - * Ten million is legal, but is very unlikely - */ - if (dev->isYaffs2 && - (bi->blockState == YAFFS_BLOCK_STATE_ALLOCATING || bi->blockState == YAFFS_BLOCK_STATE_FULL) && - (bi->sequenceNumber < YAFFS_LOWEST_SEQUENCE_NUMBER || bi->sequenceNumber > 10000000)) - T(YAFFS_TRACE_VERIFY, (TSTR("Block %d has suspect sequence number of %d"TENDSTR), - n, bi->sequenceNumber)); -} - -static void yaffs_VerifyCollectedBlock(yaffs_Device *dev, yaffs_BlockInfo *bi, - int n) -{ - yaffs_VerifyBlock(dev, bi, n); - - /* After collection the block should be in the erased state */ - /* This will need to change if we do partial gc */ - - if (bi->blockState != YAFFS_BLOCK_STATE_COLLECTING && - bi->blockState != YAFFS_BLOCK_STATE_EMPTY) { - T(YAFFS_TRACE_ERROR, (TSTR("Block %d is in state %d after gc, should be erased"TENDSTR), - n, bi->blockState)); - } -} - -static void yaffs_VerifyBlocks(yaffs_Device *dev) -{ - int i; - int nBlocksPerState[YAFFS_NUMBER_OF_BLOCK_STATES]; - int nIllegalBlockStates = 0; - - if (yaffs_SkipVerification(dev)) - return; - - memset(nBlocksPerState, 0, sizeof(nBlocksPerState)); - - for (i = dev->internalStartBlock; i <= dev->internalEndBlock; i++) { - yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, i); - yaffs_VerifyBlock(dev, bi, i); - - if (bi->blockState < YAFFS_NUMBER_OF_BLOCK_STATES) - nBlocksPerState[bi->blockState]++; - else - nIllegalBlockStates++; - } - - T(YAFFS_TRACE_VERIFY, (TSTR(""TENDSTR))); - T(YAFFS_TRACE_VERIFY, (TSTR("Block summary"TENDSTR))); - - T(YAFFS_TRACE_VERIFY, (TSTR("%d blocks have illegal states"TENDSTR), nIllegalBlockStates)); - if (nBlocksPerState[YAFFS_BLOCK_STATE_ALLOCATING] > 1) - T(YAFFS_TRACE_VERIFY, (TSTR("Too many allocating blocks"TENDSTR))); - - for (i = 0; i < YAFFS_NUMBER_OF_BLOCK_STATES; i++) - T(YAFFS_TRACE_VERIFY, - (TSTR("%s %d blocks"TENDSTR), - blockStateName[i], nBlocksPerState[i])); - - if (dev->blocksInCheckpoint != nBlocksPerState[YAFFS_BLOCK_STATE_CHECKPOINT]) - T(YAFFS_TRACE_VERIFY, - (TSTR("Checkpoint block count wrong dev %d count %d"TENDSTR), - dev->blocksInCheckpoint, nBlocksPerState[YAFFS_BLOCK_STATE_CHECKPOINT])); - - if (dev->nErasedBlocks != nBlocksPerState[YAFFS_BLOCK_STATE_EMPTY]) - T(YAFFS_TRACE_VERIFY, - (TSTR("Erased block count wrong dev %d count %d"TENDSTR), - dev->nErasedBlocks, nBlocksPerState[YAFFS_BLOCK_STATE_EMPTY])); - - if (nBlocksPerState[YAFFS_BLOCK_STATE_COLLECTING] > 1) - T(YAFFS_TRACE_VERIFY, - (TSTR("Too many collecting blocks %d (max is 1)"TENDSTR), - nBlocksPerState[YAFFS_BLOCK_STATE_COLLECTING])); - - T(YAFFS_TRACE_VERIFY, (TSTR(""TENDSTR))); - -} - -/* - * Verify the object header. oh must be valid, but obj and tags may be NULL in which - * case those tests will not be performed. - */ -static void yaffs_VerifyObjectHeader(yaffs_Object *obj, yaffs_ObjectHeader *oh, yaffs_ExtendedTags *tags, int parentCheck) -{ - if (obj && yaffs_SkipVerification(obj->myDev)) - return; - - if (!(tags && obj && oh)) { - T(YAFFS_TRACE_VERIFY, - (TSTR("Verifying object header tags %x obj %x oh %x"TENDSTR), - (__u32)tags, (__u32)obj, (__u32)oh)); - return; - } - - if (oh->type <= YAFFS_OBJECT_TYPE_UNKNOWN || - oh->type > YAFFS_OBJECT_TYPE_MAX) - T(YAFFS_TRACE_VERIFY, - (TSTR("Obj %d header type is illegal value 0x%x"TENDSTR), - tags->objectId, oh->type)); - - if (tags->objectId != obj->objectId) - T(YAFFS_TRACE_VERIFY, - (TSTR("Obj %d header mismatch objectId %d"TENDSTR), - tags->objectId, obj->objectId)); - - - /* - * Check that the object's parent ids match if parentCheck requested. - * - * Tests do not apply to the root object. - */ - - if (parentCheck && tags->objectId > 1 && !obj->parent) - T(YAFFS_TRACE_VERIFY, - (TSTR("Obj %d header mismatch parentId %d obj->parent is NULL"TENDSTR), - tags->objectId, oh->parentObjectId)); - - if (parentCheck && obj->parent && - oh->parentObjectId != obj->parent->objectId && - (oh->parentObjectId != YAFFS_OBJECTID_UNLINKED || - obj->parent->objectId != YAFFS_OBJECTID_DELETED)) - T(YAFFS_TRACE_VERIFY, - (TSTR("Obj %d header mismatch parentId %d parentObjectId %d"TENDSTR), - tags->objectId, oh->parentObjectId, obj->parent->objectId)); - - if (tags->objectId > 1 && oh->name[0] == 0) /* Null name */ - T(YAFFS_TRACE_VERIFY, - (TSTR("Obj %d header name is NULL"TENDSTR), - obj->objectId)); - - if (tags->objectId > 1 && ((__u8)(oh->name[0])) == 0xff) /* Trashed name */ - T(YAFFS_TRACE_VERIFY, - (TSTR("Obj %d header name is 0xFF"TENDSTR), - obj->objectId)); -} - - - -static int yaffs_VerifyTnodeWorker(yaffs_Object *obj, yaffs_Tnode *tn, - __u32 level, int chunkOffset) -{ - int i; - yaffs_Device *dev = obj->myDev; - int ok = 1; - - if (tn) { - if (level > 0) { - - for (i = 0; i < YAFFS_NTNODES_INTERNAL && ok; i++) { - if (tn->internal[i]) { - ok = yaffs_VerifyTnodeWorker(obj, - tn->internal[i], - level - 1, - (chunkOffset<<YAFFS_TNODES_INTERNAL_BITS) + i); - } - } - } else if (level == 0) { - yaffs_ExtendedTags tags; - __u32 objectId = obj->objectId; - - chunkOffset <<= YAFFS_TNODES_LEVEL0_BITS; - - for (i = 0; i < YAFFS_NTNODES_LEVEL0; i++) { - __u32 theChunk = yaffs_GetChunkGroupBase(dev, tn, i); - - if (theChunk > 0) { - /* T(~0,(TSTR("verifying (%d:%d) %d"TENDSTR),tags.objectId,tags.chunkId,theChunk)); */ - yaffs_ReadChunkWithTagsFromNAND(dev, theChunk, NULL, &tags); - if (tags.objectId != objectId || tags.chunkId != chunkOffset) { - T(~0, (TSTR("Object %d chunkId %d NAND mismatch chunk %d tags (%d:%d)"TENDSTR), - objectId, chunkOffset, theChunk, - tags.objectId, tags.chunkId)); - } - } - chunkOffset++; - } - } - } - - return ok; - -} - - -static void yaffs_VerifyFile(yaffs_Object *obj) -{ - int requiredTallness; - int actualTallness; - __u32 lastChunk; - __u32 x; - __u32 i; - yaffs_Device *dev; - yaffs_ExtendedTags tags; - yaffs_Tnode *tn; - __u32 objectId; - - if (!obj) - return; - - if (yaffs_SkipVerification(obj->myDev)) - return; - - dev = obj->myDev; - objectId = obj->objectId; - - /* Check file size is consistent with tnode depth */ - lastChunk = obj->variant.fileVariant.fileSize / dev->nDataBytesPerChunk + 1; - x = lastChunk >> YAFFS_TNODES_LEVEL0_BITS; - requiredTallness = 0; - while (x > 0) { - x >>= YAFFS_TNODES_INTERNAL_BITS; - requiredTallness++; - } - - actualTallness = obj->variant.fileVariant.topLevel; - - if (requiredTallness > actualTallness) - T(YAFFS_TRACE_VERIFY, - (TSTR("Obj %d had tnode tallness %d, needs to be %d"TENDSTR), - obj->objectId, actualTallness, requiredTallness)); - - - /* Check that the chunks in the tnode tree are all correct. - * We do this by scanning through the tnode tree and - * checking the tags for every chunk match. - */ - - if (yaffs_SkipNANDVerification(dev)) - return; - - for (i = 1; i <= lastChunk; i++) { - tn = yaffs_FindLevel0Tnode(dev, &obj->variant.fileVariant, i); - - if (tn) { - __u32 theChunk = yaffs_GetChunkGroupBase(dev, tn, i); - if (theChunk > 0) { - /* T(~0,(TSTR("verifying (%d:%d) %d"TENDSTR),objectId,i,theChunk)); */ - yaffs_ReadChunkWithTagsFromNAND(dev, theChunk, NULL, &tags); - if (tags.objectId != objectId || tags.chunkId != i) { - T(~0, (TSTR("Object %d chunkId %d NAND mismatch chunk %d tags (%d:%d)"TENDSTR), - objectId, i, theChunk, - tags.objectId, tags.chunkId)); - } - } - } - } -} - - -static void yaffs_VerifyHardLink(yaffs_Object *obj) -{ - if (obj && yaffs_SkipVerification(obj->myDev)) - return; - - /* Verify sane equivalent object */ -} - -static void yaffs_VerifySymlink(yaffs_Object *obj) -{ - if (obj && yaffs_SkipVerification(obj->myDev)) - return; - - /* Verify symlink string */ -} - -static void yaffs_VerifySpecial(yaffs_Object *obj) -{ - if (obj && yaffs_SkipVerification(obj->myDev)) - return; -} - -static void yaffs_VerifyObject(yaffs_Object *obj) -{ - yaffs_Device *dev; - - __u32 chunkMin; - __u32 chunkMax; - - __u32 chunkIdOk; - __u32 chunkInRange; - __u32 chunkShouldNotBeDeleted; - __u32 chunkValid; - - if (!obj) - return; - - if (obj->beingCreated) - return; - - dev = obj->myDev; - - if (yaffs_SkipVerification(dev)) - return; - - /* Check sane object header chunk */ - - chunkMin = dev->internalStartBlock * dev->nChunksPerBlock; - chunkMax = (dev->internalEndBlock+1) * dev->nChunksPerBlock - 1; - - chunkInRange = (((unsigned)(obj->hdrChunk)) >= chunkMin && ((unsigned)(obj->hdrChunk)) <= chunkMax); - chunkIdOk = chunkInRange || obj->hdrChunk == 0; - chunkValid = chunkInRange && - yaffs_CheckChunkBit(dev, - obj->hdrChunk / dev->nChunksPerBlock, - obj->hdrChunk % dev->nChunksPerBlock); - chunkShouldNotBeDeleted = chunkInRange && !chunkValid; - - if (!obj->fake && - (!chunkIdOk || chunkShouldNotBeDeleted)) { - T(YAFFS_TRACE_VERIFY, - (TSTR("Obj %d has chunkId %d %s %s"TENDSTR), - obj->objectId, obj->hdrChunk, - chunkIdOk ? "" : ",out of range", - chunkShouldNotBeDeleted ? ",marked as deleted" : "")); - } - - if (chunkValid && !yaffs_SkipNANDVerification(dev)) { - yaffs_ExtendedTags tags; - yaffs_ObjectHeader *oh; - __u8 *buffer = yaffs_GetTempBuffer(dev, __LINE__); - - oh = (yaffs_ObjectHeader *)buffer; - - yaffs_ReadChunkWithTagsFromNAND(dev, obj->hdrChunk, buffer, - &tags); - - yaffs_VerifyObjectHeader(obj, oh, &tags, 1); - - yaffs_ReleaseTempBuffer(dev, buffer, __LINE__); - } - - /* Verify it has a parent */ - if (obj && !obj->fake && - (!obj->parent || obj->parent->myDev != dev)) { - T(YAFFS_TRACE_VERIFY, - (TSTR("Obj %d has parent pointer %p which does not look like an object"TENDSTR), - obj->objectId, obj->parent)); - } - - /* Verify parent is a directory */ - if (obj->parent && obj->parent->variantType != YAFFS_OBJECT_TYPE_DIRECTORY) { - T(YAFFS_TRACE_VERIFY, - (TSTR("Obj %d's parent is not a directory (type %d)"TENDSTR), - obj->objectId, obj->parent->variantType)); - } - - switch (obj->variantType) { - case YAFFS_OBJECT_TYPE_FILE: - yaffs_VerifyFile(obj); - break; - case YAFFS_OBJECT_TYPE_SYMLINK: - yaffs_VerifySymlink(obj); - break; - case YAFFS_OBJECT_TYPE_DIRECTORY: - yaffs_VerifyDirectory(obj); - break; - case YAFFS_OBJECT_TYPE_HARDLINK: - yaffs_VerifyHardLink(obj); - break; - case YAFFS_OBJECT_TYPE_SPECIAL: - yaffs_VerifySpecial(obj); - break; - case YAFFS_OBJECT_TYPE_UNKNOWN: - default: - T(YAFFS_TRACE_VERIFY, - (TSTR("Obj %d has illegaltype %d"TENDSTR), - obj->objectId, obj->variantType)); - break; - } -} - -static void yaffs_VerifyObjects(yaffs_Device *dev) -{ - yaffs_Object *obj; - int i; - struct ylist_head *lh; - - if (yaffs_SkipVerification(dev)) - return; - /* Iterate through the objects in each hash entry */ - - for (i = 0; i < YAFFS_NOBJECT_BUCKETS; i++) { - ylist_for_each(lh, &dev->objectBucket[i].list) { - if (lh) { - obj = ylist_entry(lh, yaffs_Object, hashLink); - yaffs_VerifyObject(obj); - } - } - } -} /* * Simple hash function. Needs to have a reasonable spread */ -static Y_INLINE int yaffs_HashFunction(int n) +static Y_INLINE int yaffs_hash_fn(int n) { n = abs(n); return n % YAFFS_NOBJECT_BUCKETS; @@ -867,14 +309,14 @@ static Y_INLINE int yaffs_HashFunction(int n) * Note that root might have a presence in NAND if permissions are set. */ -yaffs_Object *yaffs_Root(yaffs_Device *dev) +yaffs_obj_t *yaffs_root(yaffs_dev_t *dev) { - return dev->rootDir; + return dev->root_dir; } -yaffs_Object *yaffs_LostNFound(yaffs_Device *dev) +yaffs_obj_t *yaffs_lost_n_found(yaffs_dev_t *dev) { - return dev->lostNFoundDir; + return dev->lost_n_found; } @@ -882,10 +324,10 @@ yaffs_Object *yaffs_LostNFound(yaffs_Device *dev) * Erased NAND checking functions */ -int yaffs_CheckFF(__u8 *buffer, int nBytes) +int yaffs_check_ff(__u8 *buffer, int n_bytes) { /* Horrible, slow implementation */ - while (nBytes--) { + while (n_bytes--) { if (*buffer != 0xFF) return 0; buffer++; @@ -893,47 +335,70 @@ int yaffs_CheckFF(__u8 *buffer, int nBytes) return 1; } -static int yaffs_CheckChunkErased(struct yaffs_DeviceStruct *dev, - int chunkInNAND) +static int yaffs_check_chunk_erased(struct yaffs_dev_s *dev, + int nand_chunk) { int retval = YAFFS_OK; - __u8 *data = yaffs_GetTempBuffer(dev, __LINE__); - yaffs_ExtendedTags tags; + __u8 *data = yaffs_get_temp_buffer(dev, __LINE__); + yaffs_ext_tags tags; int result; - result = yaffs_ReadChunkWithTagsFromNAND(dev, chunkInNAND, data, &tags); + result = yaffs_rd_chunk_tags_nand(dev, nand_chunk, data, &tags); - if (tags.eccResult > YAFFS_ECC_RESULT_NO_ERROR) + if (tags.ecc_result > YAFFS_ECC_RESULT_NO_ERROR) retval = YAFFS_FAIL; - if (!yaffs_CheckFF(data, dev->nDataBytesPerChunk) || tags.chunkUsed) { + if (!yaffs_check_ff(data, dev->data_bytes_per_chunk) || tags.chunk_used) { T(YAFFS_TRACE_NANDACCESS, - (TSTR("Chunk %d not erased" TENDSTR), chunkInNAND)); + (TSTR("Chunk %d not erased" TENDSTR), nand_chunk)); retval = YAFFS_FAIL; } - yaffs_ReleaseTempBuffer(dev, data, __LINE__); + yaffs_release_temp_buffer(dev, data, __LINE__); return retval; } -static int yaffs_WriteNewChunkWithTagsToNAND(struct yaffs_DeviceStruct *dev, + +static int yaffs_verify_chunk_written(yaffs_dev_t *dev, + int nand_chunk, const __u8 *data, - yaffs_ExtendedTags *tags, + yaffs_ext_tags *tags) +{ + int retval = YAFFS_OK; + yaffs_ext_tags tempTags; + __u8 *buffer = yaffs_get_temp_buffer(dev,__LINE__); + int result; + + result = yaffs_rd_chunk_tags_nand(dev,nand_chunk,buffer,&tempTags); + if(memcmp(buffer,data,dev->data_bytes_per_chunk) || + tempTags.obj_id != tags->obj_id || + tempTags.chunk_id != tags->chunk_id || + tempTags.n_bytes != tags->n_bytes) + retval = YAFFS_FAIL; + + yaffs_release_temp_buffer(dev, buffer, __LINE__); + + return retval; +} + +static int yaffs_write_new_chunk(struct yaffs_dev_s *dev, + const __u8 *data, + yaffs_ext_tags *tags, int useReserve) { int attempts = 0; int writeOk = 0; int chunk; - yaffs_InvalidateCheckpoint(dev); + yaffs2_checkpt_invalidate(dev); do { - yaffs_BlockInfo *bi = 0; + yaffs_block_info_t *bi = 0; int erasedOk = 0; - chunk = yaffs_AllocateChunk(dev, useReserve, &bi); + chunk = yaffs_alloc_chunk(dev, useReserve, &bi); if (chunk < 0) { /* no space */ break; @@ -957,42 +422,51 @@ static int yaffs_WriteNewChunkWithTagsToNAND(struct yaffs_DeviceStruct *dev, * chunk due to power loss. This checking policy should * catch that case with very few checks and thus save a * lot of checks that are most likely not needed. + * + * Mods to the above + * If an erase check fails or the write fails we skip the + * rest of the block. */ - if (bi->gcPrioritise) { - yaffs_DeleteChunk(dev, chunk, 1, __LINE__); - /* try another chunk */ - continue; - } /* let's give it a try */ attempts++; -#ifdef CONFIG_YAFFS_ALWAYS_CHECK_CHUNK_ERASED - bi->skipErasedCheck = 0; -#endif - if (!bi->skipErasedCheck) { - erasedOk = yaffs_CheckChunkErased(dev, chunk); + if(dev->param.always_check_erased) + bi->skip_erased_check = 0; + + if (!bi->skip_erased_check) { + erasedOk = yaffs_check_chunk_erased(dev, chunk); if (erasedOk != YAFFS_OK) { T(YAFFS_TRACE_ERROR, (TSTR("**>> yaffs chunk %d was not erased" TENDSTR), chunk)); - /* try another chunk */ + /* If not erased, delete this one, + * skip rest of block and + * try another chunk */ + yaffs_chunk_del(dev,chunk,1,__LINE__); + yaffs_skip_rest_of_block(dev); continue; } - bi->skipErasedCheck = 1; } - writeOk = yaffs_WriteChunkWithTagsToNAND(dev, chunk, + writeOk = yaffs_wr_chunk_tags_nand(dev, chunk, data, tags); + + if(!bi->skip_erased_check) + writeOk = yaffs_verify_chunk_written(dev, chunk, data, tags); + if (writeOk != YAFFS_OK) { - yaffs_HandleWriteChunkError(dev, chunk, erasedOk); - /* try another chunk */ + /* Clean up aborted write, skip to next block and + * try another chunk */ + yaffs_handle_chunk_wr_error(dev, chunk, erasedOk); continue; } + bi->skip_erased_check = 1; + /* Copy the data into the robustification buffer */ - yaffs_HandleWriteChunkOk(dev, chunk, data, tags); + yaffs_handle_chunk_wr_ok(dev, chunk, data, tags); } while (writeOk != YAFFS_OK && (yaffs_wr_attempts <= 0 || attempts <= yaffs_wr_attempts)); @@ -1005,51 +479,55 @@ static int yaffs_WriteNewChunkWithTagsToNAND(struct yaffs_DeviceStruct *dev, (TSTR("**>> yaffs write required %d attempts" TENDSTR), attempts)); - dev->nRetriedWrites += (attempts - 1); + dev->n_retired_writes += (attempts - 1); } return chunk; } + + /* * Block retiring for handling a broken block. */ -static void yaffs_RetireBlock(yaffs_Device *dev, int blockInNAND) +static void yaffs_retire_block(yaffs_dev_t *dev, int flash_block) { - yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, blockInNAND); + yaffs_block_info_t *bi = yaffs_get_block_info(dev, flash_block); - yaffs_InvalidateCheckpoint(dev); + yaffs2_checkpt_invalidate(dev); + + yaffs2_clear_oldest_dirty_seq(dev,bi); - if (yaffs_MarkBlockBad(dev, blockInNAND) != YAFFS_OK) { - if (yaffs_EraseBlockInNAND(dev, blockInNAND) != YAFFS_OK) { + if (yaffs_mark_bad(dev, flash_block) != YAFFS_OK) { + if (yaffs_erase_block(dev, flash_block) != YAFFS_OK) { T(YAFFS_TRACE_ALWAYS, (TSTR( "yaffs: Failed to mark bad and erase block %d" - TENDSTR), blockInNAND)); + TENDSTR), flash_block)); } else { - yaffs_ExtendedTags tags; - int chunkId = blockInNAND * dev->nChunksPerBlock; + yaffs_ext_tags tags; + int chunk_id = flash_block * dev->param.chunks_per_block; - __u8 *buffer = yaffs_GetTempBuffer(dev, __LINE__); + __u8 *buffer = yaffs_get_temp_buffer(dev, __LINE__); - memset(buffer, 0xff, dev->nDataBytesPerChunk); - yaffs_InitialiseTags(&tags); - tags.sequenceNumber = YAFFS_SEQUENCE_BAD_BLOCK; - if (dev->writeChunkWithTagsToNAND(dev, chunkId - - dev->chunkOffset, buffer, &tags) != YAFFS_OK) + memset(buffer, 0xff, dev->data_bytes_per_chunk); + yaffs_init_tags(&tags); + tags.seq_number = YAFFS_SEQUENCE_BAD_BLOCK; + if (dev->param.write_chunk_tags_fn(dev, chunk_id - + dev->chunk_offset, buffer, &tags) != YAFFS_OK) T(YAFFS_TRACE_ALWAYS, (TSTR("yaffs: Failed to " TCONT("write bad block marker to block %d") - TENDSTR), blockInNAND)); + TENDSTR), flash_block)); - yaffs_ReleaseTempBuffer(dev, buffer, __LINE__); + yaffs_release_temp_buffer(dev, buffer, __LINE__); } } - bi->blockState = YAFFS_BLOCK_STATE_DEAD; - bi->gcPrioritise = 0; - bi->needsRetiring = 0; + bi->block_state = YAFFS_BLOCK_STATE_DEAD; + bi->gc_prioritise = 0; + bi->needs_retiring = 0; - dev->nRetiredBlocks++; + dev->n_retired_blocks++; } /* @@ -1057,55 +535,63 @@ static void yaffs_RetireBlock(yaffs_Device *dev, int blockInNAND) * */ -static void yaffs_HandleWriteChunkOk(yaffs_Device *dev, int chunkInNAND, +static void yaffs_handle_chunk_wr_ok(yaffs_dev_t *dev, int nand_chunk, const __u8 *data, - const yaffs_ExtendedTags *tags) + const yaffs_ext_tags *tags) { + dev=dev; + nand_chunk=nand_chunk; + data=data; + tags=tags; } -static void yaffs_HandleUpdateChunk(yaffs_Device *dev, int chunkInNAND, - const yaffs_ExtendedTags *tags) +static void yaffs_handle_chunk_update(yaffs_dev_t *dev, int nand_chunk, + const yaffs_ext_tags *tags) { + dev=dev; + nand_chunk=nand_chunk; + tags=tags; } -void yaffs_HandleChunkError(yaffs_Device *dev, yaffs_BlockInfo *bi) +void yaffs_handle_chunk_error(yaffs_dev_t *dev, yaffs_block_info_t *bi) { - if (!bi->gcPrioritise) { - bi->gcPrioritise = 1; - dev->hasPendingPrioritisedGCs = 1; - bi->chunkErrorStrikes++; + if (!bi->gc_prioritise) { + bi->gc_prioritise = 1; + dev->has_pending_prioritised_gc = 1; + bi->chunk_error_strikes++; - if (bi->chunkErrorStrikes > 3) { - bi->needsRetiring = 1; /* Too many stikes, so retire this */ + if (bi->chunk_error_strikes > 3) { + bi->needs_retiring = 1; /* Too many stikes, so retire this */ T(YAFFS_TRACE_ALWAYS, (TSTR("yaffs: Block struck out" TENDSTR))); } } } -static void yaffs_HandleWriteChunkError(yaffs_Device *dev, int chunkInNAND, +static void yaffs_handle_chunk_wr_error(yaffs_dev_t *dev, int nand_chunk, int erasedOk) { - int blockInNAND = chunkInNAND / dev->nChunksPerBlock; - yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, blockInNAND); + int flash_block = nand_chunk / dev->param.chunks_per_block; + yaffs_block_info_t *bi = yaffs_get_block_info(dev, flash_block); - yaffs_HandleChunkError(dev, bi); + yaffs_handle_chunk_error(dev, bi); if (erasedOk) { /* Was an actual write failure, so mark the block for retirement */ - bi->needsRetiring = 1; + bi->needs_retiring = 1; T(YAFFS_TRACE_ERROR | YAFFS_TRACE_BAD_BLOCKS, - (TSTR("**>> Block %d needs retiring" TENDSTR), blockInNAND)); + (TSTR("**>> Block %d needs retiring" TENDSTR), flash_block)); } /* Delete the chunk */ - yaffs_DeleteChunk(dev, chunkInNAND, 1, __LINE__); + yaffs_chunk_del(dev, nand_chunk, 1, __LINE__); + yaffs_skip_rest_of_block(dev); } /*---------------- Name handling functions ------------*/ -static __u16 yaffs_CalcNameSum(const YCHAR *name) +static __u16 yaffs_calc_name_sum(const YCHAR *name) { __u16 sum = 0; __u16 i = 1; @@ -1126,16 +612,28 @@ static __u16 yaffs_CalcNameSum(const YCHAR *name) return sum; } -static void yaffs_SetObjectName(yaffs_Object *obj, const YCHAR *name) +void yaffs_set_obj_name(yaffs_obj_t *obj, const YCHAR *name) { #ifdef CONFIG_YAFFS_SHORT_NAMES_IN_RAM - memset(obj->shortName, 0, sizeof(YCHAR) * (YAFFS_SHORT_NAME_LENGTH+1)); - if (name && yaffs_strlen(name) <= YAFFS_SHORT_NAME_LENGTH) - yaffs_strcpy(obj->shortName, name); + memset(obj->short_name, 0, sizeof(YCHAR) * (YAFFS_SHORT_NAME_LENGTH+1)); + if (name && yaffs_strnlen(name,YAFFS_SHORT_NAME_LENGTH+1) <= YAFFS_SHORT_NAME_LENGTH) + yaffs_strcpy(obj->short_name, name); else - obj->shortName[0] = _Y('\0'); + obj->short_name[0] = _Y('\0'); +#endif + obj->sum = yaffs_calc_name_sum(name); +} + +void yaffs_set_obj_name_from_oh(yaffs_obj_t *obj, const yaffs_obj_header *oh) +{ +#ifdef CONFIG_YAFFS_AUTO_UNICODE + YCHAR tmpName[YAFFS_MAX_NAME_LENGTH+1]; + memset(tmpName,0,sizeof(tmpName)); + yaffs_load_name_from_oh(obj->my_dev,tmpName,oh->name,YAFFS_MAX_NAME_LENGTH+1); + yaffs_set_obj_name(obj,tmpName); +#else + yaffs_set_obj_name(obj,oh->name); #endif - obj->sum = yaffs_CalcNameSum(name); } /*-------------------- TNODES ------------------- @@ -1145,185 +643,37 @@ static void yaffs_SetObjectName(yaffs_Object *obj, const YCHAR *name) * in the tnode. */ -/* yaffs_CreateTnodes creates a bunch more tnodes and - * adds them to the tnode free list. - * Don't use this function directly - */ -static int yaffs_CreateTnodes(yaffs_Device *dev, int nTnodes) +yaffs_tnode_t *yaffs_get_tnode(yaffs_dev_t *dev) { - int i; - int tnodeSize; - yaffs_Tnode *newTnodes; - __u8 *mem; - yaffs_Tnode *curr; - yaffs_Tnode *next; - yaffs_TnodeList *tnl; - - if (nTnodes < 1) - return YAFFS_OK; - - /* Calculate the tnode size in bytes for variable width tnode support. - * Must be a multiple of 32-bits */ - tnodeSize = (dev->tnodeWidth * YAFFS_NTNODES_LEVEL0)/8; - - if (tnodeSize < sizeof(yaffs_Tnode)) - tnodeSize = sizeof(yaffs_Tnode); - - /* make these things */ - - newTnodes = YMALLOC(nTnodes * tnodeSize); - mem = (__u8 *)newTnodes; - - if (!newTnodes) { - T(YAFFS_TRACE_ERROR, - (TSTR("yaffs: Could not allocate Tnodes" TENDSTR))); - return YAFFS_FAIL; + yaffs_tnode_t *tn = yaffs_alloc_raw_tnode(dev); + if (tn){ + memset(tn, 0, dev->tnode_size); + dev->n_tnodes++; } - /* Hook them into the free list */ -#if 0 - for (i = 0; i < nTnodes - 1; i++) { - newTnodes[i].internal[0] = &newTnodes[i + 1]; -#ifdef CONFIG_YAFFS_TNODE_LIST_DEBUG - newTnodes[i].internal[YAFFS_NTNODES_INTERNAL] = (void *)1; -#endif - } - - newTnodes[nTnodes - 1].internal[0] = dev->freeTnodes; -#ifdef CONFIG_YAFFS_TNODE_LIST_DEBUG - newTnodes[nTnodes - 1].internal[YAFFS_NTNODES_INTERNAL] = (void *)1; -#endif - dev->freeTnodes = newTnodes; -#else - /* New hookup for wide tnodes */ - for (i = 0; i < nTnodes - 1; i++) { - curr = (yaffs_Tnode *) &mem[i * tnodeSize]; - next = (yaffs_Tnode *) &mem[(i+1) * tnodeSize]; - curr->internal[0] = next; - } - - curr = (yaffs_Tnode *) &mem[(nTnodes - 1) * tnodeSize]; - curr->internal[0] = dev->freeTnodes; - dev->freeTnodes = (yaffs_Tnode *)mem; - -#endif - - - dev->nFreeTnodes += nTnodes; - dev->nTnodesCreated += nTnodes; - - /* Now add this bunch of tnodes to a list for freeing up. - * NB If we can't add this to the management list it isn't fatal - * but it just means we can't free this bunch of tnodes later. - */ - - tnl = YMALLOC(sizeof(yaffs_TnodeList)); - if (!tnl) { - T(YAFFS_TRACE_ERROR, - (TSTR - ("yaffs: Could not add tnodes to management list" TENDSTR))); - return YAFFS_FAIL; - } else { - tnl->tnodes = newTnodes; - tnl->next = dev->allocatedTnodeList; - dev->allocatedTnodeList = tnl; - } - - T(YAFFS_TRACE_ALLOCATE, (TSTR("yaffs: Tnodes added" TENDSTR))); - - return YAFFS_OK; -} - -/* GetTnode gets us a clean tnode. Tries to make allocate more if we run out */ - -static yaffs_Tnode *yaffs_GetTnodeRaw(yaffs_Device *dev) -{ - yaffs_Tnode *tn = NULL; - - /* If there are none left make more */ - if (!dev->freeTnodes) - yaffs_CreateTnodes(dev, YAFFS_ALLOCATION_NTNODES); - - if (dev->freeTnodes) { - tn = dev->freeTnodes; -#ifdef CONFIG_YAFFS_TNODE_LIST_DEBUG - if (tn->internal[YAFFS_NTNODES_INTERNAL] != (void *)1) { - /* Hoosterman, this thing looks like it isn't in the list */ - T(YAFFS_TRACE_ALWAYS, - (TSTR("yaffs: Tnode list bug 1" TENDSTR))); - } -#endif - dev->freeTnodes = dev->freeTnodes->internal[0]; - dev->nFreeTnodes--; - } - - dev->nCheckpointBlocksRequired = 0; /* force recalculation*/ - - return tn; -} - -static yaffs_Tnode *yaffs_GetTnode(yaffs_Device *dev) -{ - yaffs_Tnode *tn = yaffs_GetTnodeRaw(dev); - int tnodeSize = (dev->tnodeWidth * YAFFS_NTNODES_LEVEL0)/8; - - if (tnodeSize < sizeof(yaffs_Tnode)) - tnodeSize = sizeof(yaffs_Tnode); - - if (tn) - memset(tn, 0, tnodeSize); + dev->checkpoint_blocks_required = 0; /* force recalculation*/ return tn; } /* FreeTnode frees up a tnode and puts it back on the free list */ -static void yaffs_FreeTnode(yaffs_Device *dev, yaffs_Tnode *tn) +static void yaffs_free_tnode(yaffs_dev_t *dev, yaffs_tnode_t *tn) { - if (tn) { -#ifdef CONFIG_YAFFS_TNODE_LIST_DEBUG - if (tn->internal[YAFFS_NTNODES_INTERNAL] != 0) { - /* Hoosterman, this thing looks like it is already in the list */ - T(YAFFS_TRACE_ALWAYS, - (TSTR("yaffs: Tnode list bug 2" TENDSTR))); - } - tn->internal[YAFFS_NTNODES_INTERNAL] = (void *)1; -#endif - tn->internal[0] = dev->freeTnodes; - dev->freeTnodes = tn; - dev->nFreeTnodes++; - } - dev->nCheckpointBlocksRequired = 0; /* force recalculation*/ -} - -static void yaffs_DeinitialiseTnodes(yaffs_Device *dev) -{ - /* Free the list of allocated tnodes */ - yaffs_TnodeList *tmp; - - while (dev->allocatedTnodeList) { - tmp = dev->allocatedTnodeList->next; - - YFREE(dev->allocatedTnodeList->tnodes); - YFREE(dev->allocatedTnodeList); - dev->allocatedTnodeList = tmp; - - } - - dev->freeTnodes = NULL; - dev->nFreeTnodes = 0; + yaffs_free_raw_tnode(dev,tn); + dev->n_tnodes--; + dev->checkpoint_blocks_required = 0; /* force recalculation*/ } -static void yaffs_InitialiseTnodes(yaffs_Device *dev) +static void yaffs_deinit_tnodes_and_objs(yaffs_dev_t *dev) { - dev->allocatedTnodeList = NULL; - dev->freeTnodes = NULL; - dev->nFreeTnodes = 0; - dev->nTnodesCreated = 0; + yaffs_deinit_raw_tnodes_and_objs(dev); + dev->n_obj = 0; + dev->n_tnodes = 0; } -void yaffs_PutLevel0Tnode(yaffs_Device *dev, yaffs_Tnode *tn, unsigned pos, +void yaffs_load_tnode_0(yaffs_dev_t *dev, yaffs_tnode_t *tn, unsigned pos, unsigned val) { __u32 *map = (__u32 *)tn; @@ -1333,27 +683,27 @@ void yaffs_PutLevel0Tnode(yaffs_Device *dev, yaffs_Tnode *tn, unsigned pos, __u32 mask; pos &= YAFFS_TNODES_LEVEL0_MASK; - val >>= dev->chunkGroupBits; + val >>= dev->chunk_grp_bits; - bitInMap = pos * dev->tnodeWidth; + bitInMap = pos * dev->tnode_width; wordInMap = bitInMap / 32; bitInWord = bitInMap & (32 - 1); - mask = dev->tnodeMask << bitInWord; + mask = dev->tnode_mask << bitInWord; map[wordInMap] &= ~mask; map[wordInMap] |= (mask & (val << bitInWord)); - if (dev->tnodeWidth > (32 - bitInWord)) { + if (dev->tnode_width > (32 - bitInWord)) { bitInWord = (32 - bitInWord); wordInMap++;; - mask = dev->tnodeMask >> (/*dev->tnodeWidth -*/ bitInWord); + mask = dev->tnode_mask >> (/*dev->tnode_width -*/ bitInWord); map[wordInMap] &= ~mask; map[wordInMap] |= (mask & (val >> bitInWord)); } } -static __u32 yaffs_GetChunkGroupBase(yaffs_Device *dev, yaffs_Tnode *tn, +__u32 yaffs_get_group_base(yaffs_dev_t *dev, yaffs_tnode_t *tn, unsigned pos) { __u32 *map = (__u32 *)tn; @@ -1364,20 +714,20 @@ static __u32 yaffs_GetChunkGroupBase(yaffs_Device *dev, yaffs_Tnode *tn, pos &= YAFFS_TNODES_LEVEL0_MASK; - bitInMap = pos * dev->tnodeWidth; + bitInMap = pos * dev->tnode_width; wordInMap = bitInMap / 32; bitInWord = bitInMap & (32 - 1); val = map[wordInMap] >> bitInWord; - if (dev->tnodeWidth > (32 - bitInWord)) { + if (dev->tnode_width > (32 - bitInWord)) { bitInWord = (32 - bitInWord); wordInMap++;; val |= (map[wordInMap] << bitInWord); } - val &= dev->tnodeMask; - val <<= dev->chunkGroupBits; + val &= dev->tnode_mask; + val <<= dev->chunk_grp_bits; return val; } @@ -1385,42 +735,44 @@ static __u32 yaffs_GetChunkGroupBase(yaffs_Device *dev, yaffs_Tnode *tn, /* ------------------- End of individual tnode manipulation -----------------*/ /* ---------Functions to manipulate the look-up tree (made up of tnodes) ------ - * The look up tree is represented by the top tnode and the number of topLevel + * The look up tree is represented by the top tnode and the number of top_level * in the tree. 0 means only the level 0 tnode is in the tree. */ /* FindLevel0Tnode finds the level 0 tnode, if one exists. */ -static yaffs_Tnode *yaffs_FindLevel0Tnode(yaffs_Device *dev, - yaffs_FileStructure *fStruct, - __u32 chunkId) +yaffs_tnode_t *yaffs_find_tnode_0(yaffs_dev_t *dev, + yaffs_file_s *file_struct, + __u32 chunk_id) { - yaffs_Tnode *tn = fStruct->top; + yaffs_tnode_t *tn = file_struct->top; __u32 i; int requiredTallness; - int level = fStruct->topLevel; + int level = file_struct->top_level; + + dev=dev; /* Check sane level and chunk Id */ if (level < 0 || level > YAFFS_TNODES_MAX_LEVEL) return NULL; - if (chunkId > YAFFS_MAX_CHUNK_ID) + if (chunk_id > YAFFS_MAX_CHUNK_ID) return NULL; - /* First check we're tall enough (ie enough topLevel) */ + /* First check we're tall enough (ie enough top_level) */ - i = chunkId >> YAFFS_TNODES_LEVEL0_BITS; + i = chunk_id >> YAFFS_TNODES_LEVEL0_BITS; requiredTallness = 0; while (i) { i >>= YAFFS_TNODES_INTERNAL_BITS; requiredTallness++; } - if (requiredTallness > fStruct->topLevel) + if (requiredTallness > file_struct->top_level) return NULL; /* Not tall enough, so we can't find it */ /* Traverse down to level 0 */ while (level > 0 && tn) { - tn = tn->internal[(chunkId >> + tn = tn->internal[(chunk_id >> (YAFFS_TNODES_LEVEL0_BITS + (level - 1) * YAFFS_TNODES_INTERNAL_BITS)) & @@ -1442,29 +794,29 @@ static yaffs_Tnode *yaffs_FindLevel0Tnode(yaffs_Device *dev, * be plugged into the ttree. */ -static yaffs_Tnode *yaffs_AddOrFindLevel0Tnode(yaffs_Device *dev, - yaffs_FileStructure *fStruct, - __u32 chunkId, - yaffs_Tnode *passedTn) +yaffs_tnode_t *yaffs_add_find_tnode_0(yaffs_dev_t *dev, + yaffs_file_s *file_struct, + __u32 chunk_id, + yaffs_tnode_t *passed_tn) { int requiredTallness; int i; int l; - yaffs_Tnode *tn; + yaffs_tnode_t *tn; __u32 x; /* Check sane level and page Id */ - if (fStruct->topLevel < 0 || fStruct->topLevel > YAFFS_TNODES_MAX_LEVEL) + if (file_struct->top_level < 0 || file_struct->top_level > YAFFS_TNODES_MAX_LEVEL) return NULL; - if (chunkId > YAFFS_MAX_CHUNK_ID) + if (chunk_id > YAFFS_MAX_CHUNK_ID) return NULL; - /* First check we're tall enough (ie enough topLevel) */ + /* First check we're tall enough (ie enough top_level) */ - x = chunkId >> YAFFS_TNODES_LEVEL0_BITS; + x = chunk_id >> YAFFS_TNODES_LEVEL0_BITS; requiredTallness = 0; while (x) { x >>= YAFFS_TNODES_INTERNAL_BITS; @@ -1472,32 +824,32 @@ static yaffs_Tnode *yaffs_AddOrFindLevel0Tnode(yaffs_Device *dev, } - if (requiredTallness > fStruct->topLevel) { + if (requiredTallness > file_struct->top_level) { /* Not tall enough, gotta make the tree taller */ - for (i = fStruct->topLevel; i < requiredTallness; i++) { + for (i = file_struct->top_level; i < requiredTallness; i++) { - tn = yaffs_GetTnode(dev); + tn = yaffs_get_tnode(dev); if (tn) { - tn->internal[0] = fStruct->top; - fStruct->top = tn; + tn->internal[0] = file_struct->top; + file_struct->top = tn; + file_struct->top_level++; } else { T(YAFFS_TRACE_ERROR, - (TSTR("yaffs: no more tnodes" TENDSTR))); + (TSTR("yaffs: no more tnodes" TENDSTR))); + return NULL; } } - - fStruct->topLevel = requiredTallness; } /* Traverse down to level 0, adding anything we need */ - l = fStruct->topLevel; - tn = fStruct->top; + l = file_struct->top_level; + tn = file_struct->top; if (l > 0) { while (l > 0 && tn) { - x = (chunkId >> + x = (chunk_id >> (YAFFS_TNODES_LEVEL0_BITS + (l - 1) * YAFFS_TNODES_INTERNAL_BITS)) & YAFFS_TNODES_INTERNAL_MASK; @@ -1505,19 +857,22 @@ static yaffs_Tnode *yaffs_AddOrFindLevel0Tnode(yaffs_Device *dev, if ((l > 1) && !tn->internal[x]) { /* Add missing non-level-zero tnode */ - tn->internal[x] = yaffs_GetTnode(dev); - + tn->internal[x] = yaffs_get_tnode(dev); + if(!tn->internal[x]) + return NULL; } else if (l == 1) { /* Looking from level 1 at level 0 */ - if (passedTn) { + if (passed_tn) { /* If we already have one, then release it.*/ if (tn->internal[x]) - yaffs_FreeTnode(dev, tn->internal[x]); - tn->internal[x] = passedTn; + yaffs_free_tnode(dev, tn->internal[x]); + tn->internal[x] = passed_tn; } else if (!tn->internal[x]) { /* Don't have one, none passed in */ - tn->internal[x] = yaffs_GetTnode(dev); + tn->internal[x] = yaffs_get_tnode(dev); + if(!tn->internal[x]) + return NULL; } } @@ -1526,29 +881,34 @@ static yaffs_Tnode *yaffs_AddOrFindLevel0Tnode(yaffs_Device *dev, } } else { /* top is level 0 */ - if (passedTn) { - memcpy(tn, passedTn, (dev->tnodeWidth * YAFFS_NTNODES_LEVEL0)/8); - yaffs_FreeTnode(dev, passedTn); + if (passed_tn) { + memcpy(tn, passed_tn, (dev->tnode_width * YAFFS_NTNODES_LEVEL0)/8); + yaffs_free_tnode(dev, passed_tn); } } return tn; } -static int yaffs_FindChunkInGroup(yaffs_Device *dev, int theChunk, - yaffs_ExtendedTags *tags, int objectId, - int chunkInInode) +static int yaffs_find_chunk_in_group(yaffs_dev_t *dev, int theChunk, + yaffs_ext_tags *tags, int obj_id, + int inode_chunk) { int j; - for (j = 0; theChunk && j < dev->chunkGroupSize; j++) { - if (yaffs_CheckChunkBit(dev, theChunk / dev->nChunksPerBlock, - theChunk % dev->nChunksPerBlock)) { - yaffs_ReadChunkWithTagsFromNAND(dev, theChunk, NULL, - tags); - if (yaffs_TagsMatch(tags, objectId, chunkInInode)) { - /* found it; */ + for (j = 0; theChunk && j < dev->chunk_grp_size; j++) { + if (yaffs_check_chunk_bit(dev, theChunk / dev->param.chunks_per_block, + theChunk % dev->param.chunks_per_block)) { + + if(dev->chunk_grp_size == 1) return theChunk; + else { + yaffs_rd_chunk_tags_nand(dev, theChunk, NULL, + tags); + if (yaffs_tags_match(tags, obj_id, inode_chunk)) { + /* found it; */ + return theChunk; + } } } theChunk++; @@ -1556,22 +916,23 @@ static int yaffs_FindChunkInGroup(yaffs_Device *dev, int theChunk, return -1; } - +#if 0 +/* Experimental code not being used yet. Might speed up file deletion */ /* DeleteWorker scans backwards through the tnode tree and deletes all the - * chunks and tnodes in the file + * chunks and tnodes in the file. * Returns 1 if the tree was deleted. * Returns 0 if it stopped early due to hitting the limit and the delete is incomplete. */ -static int yaffs_DeleteWorker(yaffs_Object *in, yaffs_Tnode *tn, __u32 level, - int chunkOffset, int *limit) +static int yaffs_del_worker(yaffs_obj_t *in, yaffs_tnode_t *tn, __u32 level, + int chunk_offset, int *limit) { int i; - int chunkInInode; + int inode_chunk; int theChunk; - yaffs_ExtendedTags tags; + yaffs_ext_tags tags; int foundChunk; - yaffs_Device *dev = in->myDev; + yaffs_dev_t *dev = in->my_dev; int allDone = 1; @@ -1584,20 +945,20 @@ static int yaffs_DeleteWorker(yaffs_Object *in, yaffs_Tnode *tn, __u32 level, allDone = 0; } else { allDone = - yaffs_DeleteWorker(in, + yaffs_del_worker(in, tn-> internal [i], level - 1, - (chunkOffset + (chunk_offset << YAFFS_TNODES_INTERNAL_BITS) + i, limit); } if (allDone) { - yaffs_FreeTnode(dev, + yaffs_free_tnode(dev, tn-> internal[i]); tn->internal[i] = NULL; @@ -1610,24 +971,24 @@ static int yaffs_DeleteWorker(yaffs_Object *in, yaffs_Tnode *tn, __u32 level, for (i = YAFFS_NTNODES_LEVEL0 - 1; i >= 0 && !hitLimit; i--) { - theChunk = yaffs_GetChunkGroupBase(dev, tn, i); + theChunk = yaffs_get_group_base(dev, tn, i); if (theChunk) { - chunkInInode = (chunkOffset << + inode_chunk = (chunk_offset << YAFFS_TNODES_LEVEL0_BITS) + i; foundChunk = - yaffs_FindChunkInGroup(dev, + yaffs_find_chunk_in_group(dev, theChunk, &tags, - in->objectId, - chunkInInode); + in->obj_id, + inode_chunk); if (foundChunk > 0) { - yaffs_DeleteChunk(dev, + yaffs_chunk_del(dev, foundChunk, 1, __LINE__); - in->nDataChunks--; + in->n_data_chunks--; if (limit) { *limit = *limit - 1; if (*limit <= 0) @@ -1636,7 +997,7 @@ static int yaffs_DeleteWorker(yaffs_Object *in, yaffs_Tnode *tn, __u32 level, } - yaffs_PutLevel0Tnode(dev, tn, i, 0); + yaffs_load_tnode_0(dev, tn, i, 0); } } @@ -1650,16 +1011,21 @@ static int yaffs_DeleteWorker(yaffs_Object *in, yaffs_Tnode *tn, __u32 level, } -static void yaffs_SoftDeleteChunk(yaffs_Device *dev, int chunk) +#endif + +static void yaffs_soft_del_chunk(yaffs_dev_t *dev, int chunk) { - yaffs_BlockInfo *theBlock; + yaffs_block_info_t *theBlock; + unsigned block_no; T(YAFFS_TRACE_DELETION, (TSTR("soft delete chunk %d" TENDSTR), chunk)); - theBlock = yaffs_GetBlockInfo(dev, chunk / dev->nChunksPerBlock); + block_no = chunk / dev->param.chunks_per_block; + theBlock = yaffs_get_block_info(dev, block_no); if (theBlock) { - theBlock->softDeletions++; - dev->nFreeChunks++; + theBlock->soft_del_pages++; + dev->n_free_chunks++; + yaffs2_update_oldest_dirty_seq(dev, block_no, theBlock); } } @@ -1669,13 +1035,13 @@ static void yaffs_SoftDeleteChunk(yaffs_Device *dev, int chunk) * Thus, essentially this is the same as DeleteWorker except that the chunks are soft deleted. */ -static int yaffs_SoftDeleteWorker(yaffs_Object *in, yaffs_Tnode *tn, - __u32 level, int chunkOffset) +static int yaffs_soft_del_worker(yaffs_obj_t *in, yaffs_tnode_t *tn, + __u32 level, int chunk_offset) { int i; int theChunk; int allDone = 1; - yaffs_Device *dev = in->myDev; + yaffs_dev_t *dev = in->my_dev; if (tn) { if (level > 0) { @@ -1684,16 +1050,16 @@ static int yaffs_SoftDeleteWorker(yaffs_Object *in, yaffs_Tnode *tn, i--) { if (tn->internal[i]) { allDone = - yaffs_SoftDeleteWorker(in, + yaffs_soft_del_worker(in, tn-> internal[i], level - 1, - (chunkOffset + (chunk_offset << YAFFS_TNODES_INTERNAL_BITS) + i); if (allDone) { - yaffs_FreeTnode(dev, + yaffs_free_tnode(dev, tn-> internal[i]); tn->internal[i] = NULL; @@ -1706,14 +1072,14 @@ static int yaffs_SoftDeleteWorker(yaffs_Object *in, yaffs_Tnode *tn, } else if (level == 0) { for (i = YAFFS_NTNODES_LEVEL0 - 1; i >= 0; i--) { - theChunk = yaffs_GetChunkGroupBase(dev, tn, i); + theChunk = yaffs_get_group_base(dev, tn, i); if (theChunk) { /* Note this does not find the real chunk, only the chunk group. * We make an assumption that a chunk group is not larger than * a block. */ - yaffs_SoftDeleteChunk(dev, theChunk); - yaffs_PutLevel0Tnode(dev, tn, i, 0); + yaffs_soft_del_chunk(dev, theChunk); + yaffs_load_tnode_0(dev, tn, i, 0); } } @@ -1727,25 +1093,25 @@ static int yaffs_SoftDeleteWorker(yaffs_Object *in, yaffs_Tnode *tn, } -static void yaffs_SoftDeleteFile(yaffs_Object *obj) +static void yaffs_soft_del_file(yaffs_obj_t *obj) { if (obj->deleted && - obj->variantType == YAFFS_OBJECT_TYPE_FILE && !obj->softDeleted) { - if (obj->nDataChunks <= 0) { + obj->variant_type == YAFFS_OBJECT_TYPE_FILE && !obj->soft_del) { + if (obj->n_data_chunks <= 0) { /* Empty file with no duplicate object headers, just delete it immediately */ - yaffs_FreeTnode(obj->myDev, - obj->variant.fileVariant.top); - obj->variant.fileVariant.top = NULL; + yaffs_free_tnode(obj->my_dev, + obj->variant.file_variant.top); + obj->variant.file_variant.top = NULL; T(YAFFS_TRACE_TRACING, (TSTR("yaffs: Deleting empty file %d" TENDSTR), - obj->objectId)); - yaffs_DoGenericObjectDeletion(obj); + obj->obj_id)); + yaffs_generic_obj_del(obj); } else { - yaffs_SoftDeleteWorker(obj, - obj->variant.fileVariant.top, - obj->variant.fileVariant. - topLevel, 0); - obj->softDeleted = 1; + yaffs_soft_del_worker(obj, + obj->variant.file_variant.top, + obj->variant.file_variant. + top_level, 0); + obj->soft_del = 1; } } } @@ -1759,9 +1125,13 @@ static void yaffs_SoftDeleteFile(yaffs_Object *obj) * level 0 tnode entries must be zeroed out. * Could also use this for file deletion, but that's probably better handled * by a special case. + * + * This function is recursive. For levels > 0 the function is called again on + * any sub-tree. For level == 0 we just check if the sub-tree has data. + * If there is no data in a subtree then it is pruned. */ -static yaffs_Tnode *yaffs_PruneWorker(yaffs_Device *dev, yaffs_Tnode *tn, +static yaffs_tnode_t *yaffs_prune_worker(yaffs_dev_t *dev, yaffs_tnode_t *tn, __u32 level, int del0) { int i; @@ -1770,22 +1140,32 @@ static yaffs_Tnode *yaffs_PruneWorker(yaffs_Device *dev, yaffs_Tnode *tn, if (tn) { hasData = 0; - for (i = 0; i < YAFFS_NTNODES_INTERNAL; i++) { - if (tn->internal[i] && level > 0) { - tn->internal[i] = - yaffs_PruneWorker(dev, tn->internal[i], - level - 1, - (i == 0) ? del0 : 1); + if(level > 0){ + for (i = 0; i < YAFFS_NTNODES_INTERNAL; i++) { + if (tn->internal[i]) { + tn->internal[i] = + yaffs_prune_worker(dev, tn->internal[i], + level - 1, + (i == 0) ? del0 : 1); + } + + if (tn->internal[i]) + hasData++; } + } else { + int tnode_size_u32 = dev->tnode_size/sizeof(__u32); + __u32 *map = (__u32 *)tn; - if (tn->internal[i]) - hasData++; - } + for(i = 0; !hasData && i < tnode_size_u32; i++){ + if(map[i]) + hasData++; + } + } if (hasData == 0 && del0) { /* Free and return NULL */ - yaffs_FreeTnode(dev, tn); + yaffs_free_tnode(dev, tn); tn = NULL; } @@ -1795,17 +1175,17 @@ static yaffs_Tnode *yaffs_PruneWorker(yaffs_Device *dev, yaffs_Tnode *tn, } -static int yaffs_PruneFileStructure(yaffs_Device *dev, - yaffs_FileStructure *fStruct) +static int yaffs_prune_tree(yaffs_dev_t *dev, + yaffs_file_s *file_struct) { int i; int hasData; int done = 0; - yaffs_Tnode *tn; + yaffs_tnode_t *tn; - if (fStruct->topLevel > 0) { - fStruct->top = - yaffs_PruneWorker(dev, fStruct->top, fStruct->topLevel, 0); + if (file_struct->top_level > 0) { + file_struct->top = + yaffs_prune_worker(dev, file_struct->top, file_struct->top_level, 0); /* Now we have a tree with all the non-zero branches NULL but the height * is the same as it was. @@ -1814,8 +1194,8 @@ static int yaffs_PruneFileStructure(yaffs_Device *dev, * (ie all the non-zero are NULL) */ - while (fStruct->topLevel && !done) { - tn = fStruct->top; + while (file_struct->top_level && !done) { + tn = file_struct->top; hasData = 0; for (i = 1; i < YAFFS_NTNODES_INTERNAL; i++) { @@ -1824,9 +1204,9 @@ static int yaffs_PruneFileStructure(yaffs_Device *dev, } if (!hasData) { - fStruct->top = tn->internal[0]; - fStruct->topLevel--; - yaffs_FreeTnode(dev, tn); + file_struct->top = tn->internal[0]; + file_struct->top_level--; + yaffs_free_tnode(dev, tn); } else { done = 1; } @@ -1838,250 +1218,152 @@ static int yaffs_PruneFileStructure(yaffs_Device *dev, /*-------------------- End of File Structure functions.-------------------*/ -/* yaffs_CreateFreeObjects creates a bunch more objects and - * adds them to the object free list. - */ -static int yaffs_CreateFreeObjects(yaffs_Device *dev, int nObjects) -{ - int i; - yaffs_Object *newObjects; - yaffs_ObjectList *list; - - if (nObjects < 1) - return YAFFS_OK; - - /* make these things */ - newObjects = YMALLOC(nObjects * sizeof(yaffs_Object)); - list = YMALLOC(sizeof(yaffs_ObjectList)); - - if (!newObjects || !list) { - if (newObjects) - YFREE(newObjects); - if (list) - YFREE(list); - T(YAFFS_TRACE_ALLOCATE, - (TSTR("yaffs: Could not allocate more objects" TENDSTR))); - return YAFFS_FAIL; - } - - /* Hook them into the free list */ - for (i = 0; i < nObjects - 1; i++) { - newObjects[i].siblings.next = - (struct ylist_head *)(&newObjects[i + 1]); - } - - newObjects[nObjects - 1].siblings.next = (void *)dev->freeObjects; - dev->freeObjects = newObjects; - dev->nFreeObjects += nObjects; - dev->nObjectsCreated += nObjects; - - /* Now add this bunch of Objects to a list for freeing up. */ - - list->objects = newObjects; - list->next = dev->allocatedObjectList; - dev->allocatedObjectList = list; - - return YAFFS_OK; -} - /* AllocateEmptyObject gets us a clean Object. Tries to make allocate more if we run out */ -static yaffs_Object *yaffs_AllocateEmptyObject(yaffs_Device *dev) +static yaffs_obj_t *yaffs_alloc_empty_obj(yaffs_dev_t *dev) { - yaffs_Object *tn = NULL; + yaffs_obj_t *obj = yaffs_alloc_raw_obj(dev); -#ifdef VALGRIND_TEST - tn = YMALLOC(sizeof(yaffs_Object)); -#else - /* If there are none left make more */ - if (!dev->freeObjects) - yaffs_CreateFreeObjects(dev, YAFFS_ALLOCATION_NOBJECTS); + if (obj) { + dev->n_obj++; - if (dev->freeObjects) { - tn = dev->freeObjects; - dev->freeObjects = - (yaffs_Object *) (dev->freeObjects->siblings.next); - dev->nFreeObjects--; - } -#endif - if (tn) { /* Now sweeten it up... */ - memset(tn, 0, sizeof(yaffs_Object)); - tn->beingCreated = 1; + memset(obj, 0, sizeof(yaffs_obj_t)); + obj->being_created = 1; - tn->myDev = dev; - tn->hdrChunk = 0; - tn->variantType = YAFFS_OBJECT_TYPE_UNKNOWN; - YINIT_LIST_HEAD(&(tn->hardLinks)); - YINIT_LIST_HEAD(&(tn->hashLink)); - YINIT_LIST_HEAD(&tn->siblings); + obj->my_dev = dev; + obj->hdr_chunk = 0; + obj->variant_type = YAFFS_OBJECT_TYPE_UNKNOWN; + YINIT_LIST_HEAD(&(obj->hard_links)); + YINIT_LIST_HEAD(&(obj->hash_link)); + YINIT_LIST_HEAD(&obj->siblings); /* Now make the directory sane */ - if (dev->rootDir) { - tn->parent = dev->rootDir; - ylist_add(&(tn->siblings), &dev->rootDir->variant.directoryVariant.children); + if (dev->root_dir) { + obj->parent = dev->root_dir; + ylist_add(&(obj->siblings), &dev->root_dir->variant.dir_variant.children); } /* Add it to the lost and found directory. * NB Can't put root or lostNFound in lostNFound so * check if lostNFound exists first */ - if (dev->lostNFoundDir) - yaffs_AddObjectToDirectory(dev->lostNFoundDir, tn); + if (dev->lost_n_found) + yaffs_add_obj_to_dir(dev->lost_n_found, obj); - tn->beingCreated = 0; + obj->being_created = 0; } - dev->nCheckpointBlocksRequired = 0; /* force recalculation*/ + dev->checkpoint_blocks_required = 0; /* force recalculation*/ - return tn; + return obj; } -static yaffs_Object *yaffs_CreateFakeDirectory(yaffs_Device *dev, int number, +static yaffs_obj_t *yaffs_create_fake_dir(yaffs_dev_t *dev, int number, __u32 mode) { - yaffs_Object *obj = - yaffs_CreateNewObject(dev, number, YAFFS_OBJECT_TYPE_DIRECTORY); + yaffs_obj_t *obj = + yaffs_new_obj(dev, number, YAFFS_OBJECT_TYPE_DIRECTORY); if (obj) { obj->fake = 1; /* it is fake so it might have no NAND presence... */ - obj->renameAllowed = 0; /* ... and we're not allowed to rename it... */ - obj->unlinkAllowed = 0; /* ... or unlink it */ + obj->rename_allowed = 0; /* ... and we're not allowed to rename it... */ + obj->unlink_allowed = 0; /* ... or unlink it */ obj->deleted = 0; obj->unlinked = 0; obj->yst_mode = mode; - obj->myDev = dev; - obj->hdrChunk = 0; /* Not a valid chunk. */ + obj->my_dev = dev; + obj->hdr_chunk = 0; /* Not a valid chunk. */ } return obj; } -static void yaffs_UnhashObject(yaffs_Object *tn) +static void yaffs_unhash_obj(yaffs_obj_t *obj) { int bucket; - yaffs_Device *dev = tn->myDev; + yaffs_dev_t *dev = obj->my_dev; /* If it is still linked into the bucket list, free from the list */ - if (!ylist_empty(&tn->hashLink)) { - ylist_del_init(&tn->hashLink); - bucket = yaffs_HashFunction(tn->objectId); - dev->objectBucket[bucket].count--; + if (!ylist_empty(&obj->hash_link)) { + ylist_del_init(&obj->hash_link); + bucket = yaffs_hash_fn(obj->obj_id); + dev->obj_bucket[bucket].count--; } } /* FreeObject frees up a Object and puts it back on the free list */ -static void yaffs_FreeObject(yaffs_Object *tn) +static void yaffs_free_obj(yaffs_obj_t *obj) { - yaffs_Device *dev = tn->myDev; + yaffs_dev_t *dev = obj->my_dev; -#ifdef __KERNEL__ - T(YAFFS_TRACE_OS, (TSTR("FreeObject %p inode %p"TENDSTR), tn, tn->myInode)); -#endif + T(YAFFS_TRACE_OS, (TSTR("FreeObject %p inode %p"TENDSTR), obj, obj->my_inode)); - if (tn->parent) + if (!obj) + YBUG(); + if (obj->parent) YBUG(); - if (!ylist_empty(&tn->siblings)) + if (!ylist_empty(&obj->siblings)) YBUG(); -#ifdef __KERNEL__ - if (tn->myInode) { + if (obj->my_inode) { /* We're still hooked up to a cached inode. * Don't delete now, but mark for later deletion */ - tn->deferedFree = 1; + obj->defered_free = 1; return; } -#endif - - yaffs_UnhashObject(tn); - -#ifdef VALGRIND_TEST - YFREE(tn); -#else - /* Link into the free list. */ - tn->siblings.next = (struct ylist_head *)(dev->freeObjects); - dev->freeObjects = tn; - dev->nFreeObjects++; -#endif - dev->nCheckpointBlocksRequired = 0; /* force recalculation*/ -} -#ifdef __KERNEL__ + yaffs_unhash_obj(obj); -void yaffs_HandleDeferedFree(yaffs_Object *obj) -{ - if (obj->deferedFree) - yaffs_FreeObject(obj); + yaffs_free_raw_obj(dev,obj); + dev->n_obj--; + dev->checkpoint_blocks_required = 0; /* force recalculation*/ } -#endif -static void yaffs_DeinitialiseObjects(yaffs_Device *dev) +void yaffs_handle_defered_free(yaffs_obj_t *obj) { - /* Free the list of allocated Objects */ - - yaffs_ObjectList *tmp; - - while (dev->allocatedObjectList) { - tmp = dev->allocatedObjectList->next; - YFREE(dev->allocatedObjectList->objects); - YFREE(dev->allocatedObjectList); - - dev->allocatedObjectList = tmp; - } - - dev->freeObjects = NULL; - dev->nFreeObjects = 0; + if (obj->defered_free) + yaffs_free_obj(obj); } -static void yaffs_InitialiseObjects(yaffs_Device *dev) +static void yaffs_init_tnodes_and_objs(yaffs_dev_t *dev) { int i; - dev->allocatedObjectList = NULL; - dev->freeObjects = NULL; - dev->nFreeObjects = 0; + dev->n_obj = 0; + dev->n_tnodes = 0; + + yaffs_init_raw_tnodes_and_objs(dev); for (i = 0; i < YAFFS_NOBJECT_BUCKETS; i++) { - YINIT_LIST_HEAD(&dev->objectBucket[i].list); - dev->objectBucket[i].count = 0; + YINIT_LIST_HEAD(&dev->obj_bucket[i].list); + dev->obj_bucket[i].count = 0; } } -static int yaffs_FindNiceObjectBucket(yaffs_Device *dev) +static int yaffs_find_nice_bucket(yaffs_dev_t *dev) { - static int x; int i; int l = 999; int lowest = 999999; - /* First let's see if we can find one that's empty. */ - - for (i = 0; i < 10 && lowest > 0; i++) { - x++; - x %= YAFFS_NOBJECT_BUCKETS; - if (dev->objectBucket[x].count < lowest) { - lowest = dev->objectBucket[x].count; - l = x; - } - - } - /* If we didn't find an empty list, then try - * looking a bit further for a short one + /* Search for the shortest list or one that + * isn't too long. */ - for (i = 0; i < 10 && lowest > 3; i++) { - x++; - x %= YAFFS_NOBJECT_BUCKETS; - if (dev->objectBucket[x].count < lowest) { - lowest = dev->objectBucket[x].count; - l = x; + for (i = 0; i < 10 && lowest > 4; i++) { + dev->bucket_finder++; + dev->bucket_finder %= YAFFS_NOBJECT_BUCKETS; + if (dev->obj_bucket[dev->bucket_finder].count < lowest) { + lowest = dev->obj_bucket[dev->bucket_finder].count; + l = dev->bucket_finder; } } @@ -2089,9 +1371,9 @@ static int yaffs_FindNiceObjectBucket(yaffs_Device *dev) return l; } -static int yaffs_CreateNewObjectNumber(yaffs_Device *dev) +static int yaffs_new_obj_id(yaffs_dev_t *dev) { - int bucket = yaffs_FindNiceObjectBucket(dev); + int bucket = yaffs_find_nice_bucket(dev); /* Now find an object value that has not already been taken * by scanning the list. @@ -2102,16 +1384,16 @@ static int yaffs_CreateNewObjectNumber(yaffs_Device *dev) __u32 n = (__u32) bucket; - /* yaffs_CheckObjectHashSanity(); */ + /* yaffs_check_obj_hash_sane(); */ while (!found) { found = 1; n += YAFFS_NOBJECT_BUCKETS; - if (1 || dev->objectBucket[bucket].count > 0) { - ylist_for_each(i, &dev->objectBucket[bucket].list) { + if (1 || dev->obj_bucket[bucket].count > 0) { + ylist_for_each(i, &dev->obj_bucket[bucket].list) { /* If there is already one in the list */ - if (i && ylist_entry(i, yaffs_Object, - hashLink)->objectId == n) { + if (i && ylist_entry(i, yaffs_obj_t, + hash_link)->obj_id == n) { found = 0; } } @@ -2121,31 +1403,30 @@ static int yaffs_CreateNewObjectNumber(yaffs_Device *dev) return n; } -static void yaffs_HashObject(yaffs_Object *in) +static void yaffs_hash_obj(yaffs_obj_t *in) { - int bucket = yaffs_HashFunction(in->objectId); - yaffs_Device *dev = in->myDev; + int bucket = yaffs_hash_fn(in->obj_id); + yaffs_dev_t *dev = in->my_dev; - ylist_add(&in->hashLink, &dev->objectBucket[bucket].list); - dev->objectBucket[bucket].count++; + ylist_add(&in->hash_link, &dev->obj_bucket[bucket].list); + dev->obj_bucket[bucket].count++; } -yaffs_Object *yaffs_FindObjectByNumber(yaffs_Device *dev, __u32 number) +yaffs_obj_t *yaffs_find_by_number(yaffs_dev_t *dev, __u32 number) { - int bucket = yaffs_HashFunction(number); + int bucket = yaffs_hash_fn(number); struct ylist_head *i; - yaffs_Object *in; + yaffs_obj_t *in; - ylist_for_each(i, &dev->objectBucket[bucket].list) { + ylist_for_each(i, &dev->obj_bucket[bucket].list) { /* Look if it is in the list */ if (i) { - in = ylist_entry(i, yaffs_Object, hashLink); - if (in->objectId == number) { -#ifdef __KERNEL__ + in = ylist_entry(i, yaffs_obj_t, hash_link); + if (in->obj_id == number) { + /* Don't tell the VFS about this one if it is defered free */ - if (in->deferedFree) + if (in->defered_free) return NULL; -#endif return in; } @@ -2155,36 +1436,38 @@ yaffs_Object *yaffs_FindObjectByNumber(yaffs_Device *dev, __u32 number) return NULL; } -yaffs_Object *yaffs_CreateNewObject(yaffs_Device *dev, int number, - yaffs_ObjectType type) +yaffs_obj_t *yaffs_new_obj(yaffs_dev_t *dev, int number, + yaffs_obj_type type) { - yaffs_Object *theObject; - yaffs_Tnode *tn = NULL; + yaffs_obj_t *theObject=NULL; + yaffs_tnode_t *tn = NULL; if (number < 0) - number = yaffs_CreateNewObjectNumber(dev); - - theObject = yaffs_AllocateEmptyObject(dev); - if (!theObject) - return NULL; + number = yaffs_new_obj_id(dev); if (type == YAFFS_OBJECT_TYPE_FILE) { - tn = yaffs_GetTnode(dev); - if (!tn) { - yaffs_FreeObject(theObject); + tn = yaffs_get_tnode(dev); + if (!tn) return NULL; - } } + theObject = yaffs_alloc_empty_obj(dev); + if (!theObject){ + if(tn) + yaffs_free_tnode(dev,tn); + return NULL; + } + + if (theObject) { theObject->fake = 0; - theObject->renameAllowed = 1; - theObject->unlinkAllowed = 1; - theObject->objectId = number; - yaffs_HashObject(theObject); - theObject->variantType = type; + theObject->rename_allowed = 1; + theObject->unlink_allowed = 1; + theObject->obj_id = number; + yaffs_hash_obj(theObject); + theObject->variant_type = type; #ifdef CONFIG_YAFFS_WINCE - yfsd_WinFileTimeNow(theObject->win_atime); + yfsd_win_file_time_now(theObject->win_atime); theObject->win_ctime[0] = theObject->win_mtime[0] = theObject->win_atime[0]; theObject->win_ctime[1] = theObject->win_mtime[1] = @@ -2197,15 +1480,17 @@ yaffs_Object *yaffs_CreateNewObject(yaffs_Device *dev, int number, #endif switch (type) { case YAFFS_OBJECT_TYPE_FILE: - theObject->variant.fileVariant.fileSize = 0; - theObject->variant.fileVariant.scannedFileSize = 0; - theObject->variant.fileVariant.shrinkSize = 0xFFFFFFFF; /* max __u32 */ - theObject->variant.fileVariant.topLevel = 0; - theObject->variant.fileVariant.top = tn; + theObject->variant.file_variant.file_size = 0; + theObject->variant.file_variant.scanned_size = 0; + theObject->variant.file_variant.shrink_size = 0xFFFFFFFF; /* max __u32 */ + theObject->variant.file_variant.top_level = 0; + theObject->variant.file_variant.top = tn; break; case YAFFS_OBJECT_TYPE_DIRECTORY: - YINIT_LIST_HEAD(&theObject->variant.directoryVariant. + YINIT_LIST_HEAD(&theObject->variant.dir_variant. children); + YINIT_LIST_HEAD(&theObject->variant.dir_variant. + dirty); break; case YAFFS_OBJECT_TYPE_SYMLINK: case YAFFS_OBJECT_TYPE_HARDLINK: @@ -2221,86 +1506,93 @@ yaffs_Object *yaffs_CreateNewObject(yaffs_Device *dev, int number, return theObject; } -static yaffs_Object *yaffs_FindOrCreateObjectByNumber(yaffs_Device *dev, - int number, - yaffs_ObjectType type) +yaffs_obj_t *yaffs_find_or_create_by_number(yaffs_dev_t *dev, + int number, + yaffs_obj_type type) { - yaffs_Object *theObject = NULL; + yaffs_obj_t *theObject = NULL; if (number > 0) - theObject = yaffs_FindObjectByNumber(dev, number); + theObject = yaffs_find_by_number(dev, number); if (!theObject) - theObject = yaffs_CreateNewObject(dev, number, type); + theObject = yaffs_new_obj(dev, number, type); return theObject; } -static YCHAR *yaffs_CloneString(const YCHAR *str) +YCHAR *yaffs_clone_str(const YCHAR *str) { YCHAR *newStr = NULL; + int len; - if (str && *str) { - newStr = YMALLOC((yaffs_strlen(str) + 1) * sizeof(YCHAR)); - if (newStr) - yaffs_strcpy(newStr, str); - } + if (!str) + str = _Y(""); + len = yaffs_strnlen(str,YAFFS_MAX_ALIAS_LENGTH); + newStr = YMALLOC((len + 1) * sizeof(YCHAR)); + if (newStr){ + yaffs_strncpy(newStr, str,len); + newStr[len] = 0; + } return newStr; } /* * Mknod (create) a new object. - * equivalentObject only has meaning for a hard link; - * aliasString only has meaning for a sumlink. + * equiv_obj only has meaning for a hard link; + * aliasString only has meaning for a symlink. * rdev only has meaning for devices (a subset of special objects) */ -static yaffs_Object *yaffs_MknodObject(yaffs_ObjectType type, - yaffs_Object *parent, +static yaffs_obj_t *yaffs_create_obj(yaffs_obj_type type, + yaffs_obj_t *parent, const YCHAR *name, __u32 mode, __u32 uid, __u32 gid, - yaffs_Object *equivalentObject, + yaffs_obj_t *equiv_obj, const YCHAR *aliasString, __u32 rdev) { - yaffs_Object *in; + yaffs_obj_t *in; YCHAR *str = NULL; - yaffs_Device *dev = parent->myDev; + yaffs_dev_t *dev = parent->my_dev; /* Check if the entry exists. If it does then fail the call since we don't want a dup.*/ - if (yaffs_FindObjectByName(parent, name)) + if (yaffs_find_by_name(parent, name)) return NULL; - in = yaffs_CreateNewObject(dev, -1, type); - - if (!in) - return YAFFS_FAIL; - if (type == YAFFS_OBJECT_TYPE_SYMLINK) { - str = yaffs_CloneString(aliasString); - if (!str) { - yaffs_FreeObject(in); + str = yaffs_clone_str(aliasString); + if (!str) return NULL; - } + } + + in = yaffs_new_obj(dev, -1, type); + + if (!in){ + if(str) + YFREE(str); + return NULL; } + + if (in) { - in->hdrChunk = 0; + in->hdr_chunk = 0; in->valid = 1; - in->variantType = type; + in->variant_type = type; in->yst_mode = mode; #ifdef CONFIG_YAFFS_WINCE - yfsd_WinFileTimeNow(in->win_atime); + yfsd_win_file_time_now(in->win_atime); in->win_ctime[0] = in->win_mtime[0] = in->win_atime[0]; in->win_ctime[1] = in->win_mtime[1] = in->win_atime[1]; @@ -2311,25 +1603,25 @@ static yaffs_Object *yaffs_MknodObject(yaffs_ObjectType type, in->yst_uid = uid; in->yst_gid = gid; #endif - in->nDataChunks = 0; + in->n_data_chunks = 0; - yaffs_SetObjectName(in, name); + yaffs_set_obj_name(in, name); in->dirty = 1; - yaffs_AddObjectToDirectory(parent, in); + yaffs_add_obj_to_dir(parent, in); - in->myDev = parent->myDev; + in->my_dev = parent->my_dev; switch (type) { case YAFFS_OBJECT_TYPE_SYMLINK: - in->variant.symLinkVariant.alias = str; + in->variant.symlink_variant.alias = str; break; case YAFFS_OBJECT_TYPE_HARDLINK: - in->variant.hardLinkVariant.equivalentObject = - equivalentObject; - in->variant.hardLinkVariant.equivalentObjectId = - equivalentObject->objectId; - ylist_add(&in->hardLinks, &equivalentObject->hardLinks); + in->variant.hardlink_variant.equiv_obj = + equiv_obj; + in->variant.hardlink_variant.equiv_id = + equiv_obj->obj_id; + ylist_add(&in->hard_links, &equiv_obj->hard_links); break; case YAFFS_OBJECT_TYPE_FILE: case YAFFS_OBJECT_TYPE_DIRECTORY: @@ -2339,92 +1631,93 @@ static yaffs_Object *yaffs_MknodObject(yaffs_ObjectType type, break; } - if (yaffs_UpdateObjectHeader(in, name, 0, 0, 0) < 0) { + if (yaffs_update_oh(in, name, 0, 0, 0, NULL) < 0) { /* Could not create the object header, fail the creation */ - yaffs_DeleteObject(in); + yaffs_del_obj(in); in = NULL; } + yaffs_update_parent(parent); } return in; } -yaffs_Object *yaffs_MknodFile(yaffs_Object *parent, const YCHAR *name, +yaffs_obj_t *yaffs_create_file(yaffs_obj_t *parent, const YCHAR *name, __u32 mode, __u32 uid, __u32 gid) { - return yaffs_MknodObject(YAFFS_OBJECT_TYPE_FILE, parent, name, mode, + return yaffs_create_obj(YAFFS_OBJECT_TYPE_FILE, parent, name, mode, uid, gid, NULL, NULL, 0); } -yaffs_Object *yaffs_MknodDirectory(yaffs_Object *parent, const YCHAR *name, +yaffs_obj_t *yaffs_create_dir(yaffs_obj_t *parent, const YCHAR *name, __u32 mode, __u32 uid, __u32 gid) { - return yaffs_MknodObject(YAFFS_OBJECT_TYPE_DIRECTORY, parent, name, + return yaffs_create_obj(YAFFS_OBJECT_TYPE_DIRECTORY, parent, name, mode, uid, gid, NULL, NULL, 0); } -yaffs_Object *yaffs_MknodSpecial(yaffs_Object *parent, const YCHAR *name, +yaffs_obj_t *yaffs_create_special(yaffs_obj_t *parent, const YCHAR *name, __u32 mode, __u32 uid, __u32 gid, __u32 rdev) { - return yaffs_MknodObject(YAFFS_OBJECT_TYPE_SPECIAL, parent, name, mode, + return yaffs_create_obj(YAFFS_OBJECT_TYPE_SPECIAL, parent, name, mode, uid, gid, NULL, NULL, rdev); } -yaffs_Object *yaffs_MknodSymLink(yaffs_Object *parent, const YCHAR *name, +yaffs_obj_t *yaffs_create_symlink(yaffs_obj_t *parent, const YCHAR *name, __u32 mode, __u32 uid, __u32 gid, const YCHAR *alias) { - return yaffs_MknodObject(YAFFS_OBJECT_TYPE_SYMLINK, parent, name, mode, + return yaffs_create_obj(YAFFS_OBJECT_TYPE_SYMLINK, parent, name, mode, uid, gid, NULL, alias, 0); } -/* yaffs_Link returns the object id of the equivalent object.*/ -yaffs_Object *yaffs_Link(yaffs_Object *parent, const YCHAR *name, - yaffs_Object *equivalentObject) +/* yaffs_link_obj returns the object id of the equivalent object.*/ +yaffs_obj_t *yaffs_link_obj(yaffs_obj_t *parent, const YCHAR *name, + yaffs_obj_t *equiv_obj) { /* Get the real object in case we were fed a hard link as an equivalent object */ - equivalentObject = yaffs_GetEquivalentObject(equivalentObject); + equiv_obj = yaffs_get_equivalent_obj(equiv_obj); - if (yaffs_MknodObject + if (yaffs_create_obj (YAFFS_OBJECT_TYPE_HARDLINK, parent, name, 0, 0, 0, - equivalentObject, NULL, 0)) { - return equivalentObject; + equiv_obj, NULL, 0)) { + return equiv_obj; } else { return NULL; } } -static int yaffs_ChangeObjectName(yaffs_Object *obj, yaffs_Object *newDir, - const YCHAR *newName, int force, int shadows) +static int yaffs_change_obj_name(yaffs_obj_t *obj, yaffs_obj_t *new_dir, + const YCHAR *new_name, int force, int shadows) { int unlinkOp; int deleteOp; - yaffs_Object *existingTarget; + yaffs_obj_t *existingTarget; - if (newDir == NULL) - newDir = obj->parent; /* use the old directory */ + if (new_dir == NULL) + new_dir = obj->parent; /* use the old directory */ - if (newDir->variantType != YAFFS_OBJECT_TYPE_DIRECTORY) { + if (new_dir->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) { T(YAFFS_TRACE_ALWAYS, (TSTR - ("tragedy: yaffs_ChangeObjectName: newDir is not a directory" + ("tragedy: yaffs_change_obj_name: new_dir is not a directory" TENDSTR))); YBUG(); } /* TODO: Do we need this different handling for YAFFS2 and YAFFS1?? */ - if (obj->myDev->isYaffs2) - unlinkOp = (newDir == obj->myDev->unlinkedDir); + if (obj->my_dev->param.is_yaffs2) + unlinkOp = (new_dir == obj->my_dev->unlinked_dir); else - unlinkOp = (newDir == obj->myDev->unlinkedDir - && obj->variantType == YAFFS_OBJECT_TYPE_FILE); + unlinkOp = (new_dir == obj->my_dev->unlinked_dir + && obj->variant_type == YAFFS_OBJECT_TYPE_FILE); - deleteOp = (newDir == obj->myDev->deletedDir); + deleteOp = (new_dir == obj->my_dev->del_dir); - existingTarget = yaffs_FindObjectByName(newDir, newName); + existingTarget = yaffs_find_by_name(new_dir, new_name); /* If the object is a file going into the unlinked directory, * then it is OK to just stuff it in since duplicate names are allowed. @@ -2436,276 +1729,152 @@ static int yaffs_ChangeObjectName(yaffs_Object *obj, yaffs_Object *newDir, force || (shadows > 0) || !existingTarget) && - newDir->variantType == YAFFS_OBJECT_TYPE_DIRECTORY) { - yaffs_SetObjectName(obj, newName); + new_dir->variant_type == YAFFS_OBJECT_TYPE_DIRECTORY) { + yaffs_set_obj_name(obj, new_name); obj->dirty = 1; - yaffs_AddObjectToDirectory(newDir, obj); + yaffs_add_obj_to_dir(new_dir, obj); if (unlinkOp) obj->unlinked = 1; /* If it is a deletion then we mark it as a shrink for gc purposes. */ - if (yaffs_UpdateObjectHeader(obj, newName, 0, deleteOp, shadows) >= 0) + if (yaffs_update_oh(obj, new_name, 0, deleteOp, shadows, NULL) >= 0) return YAFFS_OK; } return YAFFS_FAIL; } -int yaffs_RenameObject(yaffs_Object *oldDir, const YCHAR *oldName, - yaffs_Object *newDir, const YCHAR *newName) +int yaffs_rename_obj(yaffs_obj_t *old_dir, const YCHAR *old_name, + yaffs_obj_t *new_dir, const YCHAR *new_name) { - yaffs_Object *obj = NULL; - yaffs_Object *existingTarget = NULL; + yaffs_obj_t *obj = NULL; + yaffs_obj_t *existingTarget = NULL; int force = 0; + int result; + yaffs_dev_t *dev; - if (!oldDir || oldDir->variantType != YAFFS_OBJECT_TYPE_DIRECTORY) + if (!old_dir || old_dir->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) YBUG(); - if (!newDir || newDir->variantType != YAFFS_OBJECT_TYPE_DIRECTORY) + if (!new_dir || new_dir->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) YBUG(); + dev = old_dir->my_dev; + #ifdef CONFIG_YAFFS_CASE_INSENSITIVE /* Special case for case insemsitive systems (eg. WinCE). * While look-up is case insensitive, the name isn't. * Therefore we might want to change x.txt to X.txt */ - if (oldDir == newDir && yaffs_strcmp(oldName, newName) == 0) + if (old_dir == new_dir && yaffs_strcmp(old_name, new_name) == 0) force = 1; #endif - else if (yaffs_strlen(newName) > YAFFS_MAX_NAME_LENGTH) + if(yaffs_strnlen(new_name,YAFFS_MAX_NAME_LENGTH+1) > YAFFS_MAX_NAME_LENGTH) /* ENAMETOOLONG */ return YAFFS_FAIL; - obj = yaffs_FindObjectByName(oldDir, oldName); + obj = yaffs_find_by_name(old_dir, old_name); - if (obj && obj->renameAllowed) { + if (obj && obj->rename_allowed) { /* Now do the handling for an existing target, if there is one */ - existingTarget = yaffs_FindObjectByName(newDir, newName); + existingTarget = yaffs_find_by_name(new_dir, new_name); if (existingTarget && - existingTarget->variantType == YAFFS_OBJECT_TYPE_DIRECTORY && - !ylist_empty(&existingTarget->variant.directoryVariant.children)) { + existingTarget->variant_type == YAFFS_OBJECT_TYPE_DIRECTORY && + !ylist_empty(&existingTarget->variant.dir_variant.children)) { /* There is a target that is a non-empty directory, so we fail */ return YAFFS_FAIL; /* EEXIST or ENOTEMPTY */ } else if (existingTarget && existingTarget != obj) { /* Nuke the target first, using shadowing, - * but only if it isn't the same object + * but only if it isn't the same object. + * + * Note we must disable gc otherwise it can mess up the shadowing. + * */ - yaffs_ChangeObjectName(obj, newDir, newName, force, - existingTarget->objectId); - yaffs_UnlinkObject(existingTarget); + dev->gc_disable=1; + yaffs_change_obj_name(obj, new_dir, new_name, force, + existingTarget->obj_id); + existingTarget->is_shadowed = 1; + yaffs_unlink_obj(existingTarget); + dev->gc_disable=0; } - return yaffs_ChangeObjectName(obj, newDir, newName, 1, 0); + result = yaffs_change_obj_name(obj, new_dir, new_name, 1, 0); + + yaffs_update_parent(old_dir); + if(new_dir != old_dir) + yaffs_update_parent(new_dir); + + return result; } return YAFFS_FAIL; } /*------------------------- Block Management and Page Allocation ----------------*/ -static int yaffs_InitialiseBlocks(yaffs_Device *dev) +static int yaffs_init_blocks(yaffs_dev_t *dev) { - int nBlocks = dev->internalEndBlock - dev->internalStartBlock + 1; + int nBlocks = dev->internal_end_block - dev->internal_start_block + 1; - dev->blockInfo = NULL; - dev->chunkBits = NULL; + dev->block_info = NULL; + dev->chunk_bits = NULL; - dev->allocationBlock = -1; /* force it to get a new one */ + dev->alloc_block = -1; /* force it to get a new one */ /* If the first allocation strategy fails, thry the alternate one */ - dev->blockInfo = YMALLOC(nBlocks * sizeof(yaffs_BlockInfo)); - if (!dev->blockInfo) { - dev->blockInfo = YMALLOC_ALT(nBlocks * sizeof(yaffs_BlockInfo)); - dev->blockInfoAlt = 1; + dev->block_info = YMALLOC(nBlocks * sizeof(yaffs_block_info_t)); + if (!dev->block_info) { + dev->block_info = YMALLOC_ALT(nBlocks * sizeof(yaffs_block_info_t)); + dev->block_info_alt = 1; } else - dev->blockInfoAlt = 0; + dev->block_info_alt = 0; - if (dev->blockInfo) { + if (dev->block_info) { /* Set up dynamic blockinfo stuff. */ - dev->chunkBitmapStride = (dev->nChunksPerBlock + 7) / 8; /* round up bytes */ - dev->chunkBits = YMALLOC(dev->chunkBitmapStride * nBlocks); - if (!dev->chunkBits) { - dev->chunkBits = YMALLOC_ALT(dev->chunkBitmapStride * nBlocks); - dev->chunkBitsAlt = 1; + dev->chunk_bit_stride = (dev->param.chunks_per_block + 7) / 8; /* round up bytes */ + dev->chunk_bits = YMALLOC(dev->chunk_bit_stride * nBlocks); + if (!dev->chunk_bits) { + dev->chunk_bits = YMALLOC_ALT(dev->chunk_bit_stride * nBlocks); + dev->chunk_bits_alt = 1; } else - dev->chunkBitsAlt = 0; + dev->chunk_bits_alt = 0; } - if (dev->blockInfo && dev->chunkBits) { - memset(dev->blockInfo, 0, nBlocks * sizeof(yaffs_BlockInfo)); - memset(dev->chunkBits, 0, dev->chunkBitmapStride * nBlocks); + if (dev->block_info && dev->chunk_bits) { + memset(dev->block_info, 0, nBlocks * sizeof(yaffs_block_info_t)); + memset(dev->chunk_bits, 0, dev->chunk_bit_stride * nBlocks); return YAFFS_OK; } return YAFFS_FAIL; } -static void yaffs_DeinitialiseBlocks(yaffs_Device *dev) +static void yaffs_deinit_blocks(yaffs_dev_t *dev) { - if (dev->blockInfoAlt && dev->blockInfo) - YFREE_ALT(dev->blockInfo); - else if (dev->blockInfo) - YFREE(dev->blockInfo); + if (dev->block_info_alt && dev->block_info) + YFREE_ALT(dev->block_info); + else if (dev->block_info) + YFREE(dev->block_info); - dev->blockInfoAlt = 0; + dev->block_info_alt = 0; - dev->blockInfo = NULL; + dev->block_info = NULL; - if (dev->chunkBitsAlt && dev->chunkBits) - YFREE_ALT(dev->chunkBits); - else if (dev->chunkBits) - YFREE(dev->chunkBits); - dev->chunkBitsAlt = 0; - dev->chunkBits = NULL; + if (dev->chunk_bits_alt && dev->chunk_bits) + YFREE_ALT(dev->chunk_bits); + else if (dev->chunk_bits) + YFREE(dev->chunk_bits); + dev->chunk_bits_alt = 0; + dev->chunk_bits = NULL; } -static int yaffs_BlockNotDisqualifiedFromGC(yaffs_Device *dev, - yaffs_BlockInfo *bi) -{ - int i; - __u32 seq; - yaffs_BlockInfo *b; - - if (!dev->isYaffs2) - return 1; /* disqualification only applies to yaffs2. */ - - if (!bi->hasShrinkHeader) - return 1; /* can gc */ - - /* Find the oldest dirty sequence number if we don't know it and save it - * so we don't have to keep recomputing it. - */ - if (!dev->oldestDirtySequence) { - seq = dev->sequenceNumber; - - for (i = dev->internalStartBlock; i <= dev->internalEndBlock; - i++) { - b = yaffs_GetBlockInfo(dev, i); - if (b->blockState == YAFFS_BLOCK_STATE_FULL && - (b->pagesInUse - b->softDeletions) < - dev->nChunksPerBlock && b->sequenceNumber < seq) { - seq = b->sequenceNumber; - } - } - dev->oldestDirtySequence = seq; - } - - /* Can't do gc of this block if there are any blocks older than this one that have - * discarded pages. - */ - return (bi->sequenceNumber <= dev->oldestDirtySequence); -} - -/* FindDiretiestBlock is used to select the dirtiest block (or close enough) - * for garbage collection. - */ - -static int yaffs_FindBlockForGarbageCollection(yaffs_Device *dev, - int aggressive) +void yaffs_block_became_dirty(yaffs_dev_t *dev, int block_no) { - int b = dev->currentDirtyChecker; - - int i; - int iterations; - int dirtiest = -1; - int pagesInUse = 0; - int prioritised = 0; - yaffs_BlockInfo *bi; - int pendingPrioritisedExist = 0; - - /* First let's see if we need to grab a prioritised block */ - if (dev->hasPendingPrioritisedGCs) { - for (i = dev->internalStartBlock; i < dev->internalEndBlock && !prioritised; i++) { - - bi = yaffs_GetBlockInfo(dev, i); - /* yaffs_VerifyBlock(dev,bi,i); */ - - if (bi->gcPrioritise) { - pendingPrioritisedExist = 1; - if (bi->blockState == YAFFS_BLOCK_STATE_FULL && - yaffs_BlockNotDisqualifiedFromGC(dev, bi)) { - pagesInUse = (bi->pagesInUse - bi->softDeletions); - dirtiest = i; - prioritised = 1; - aggressive = 1; /* Fool the non-aggressive skip logiv below */ - } - } - } - - if (!pendingPrioritisedExist) /* None found, so we can clear this */ - dev->hasPendingPrioritisedGCs = 0; - } - - /* If we're doing aggressive GC then we are happy to take a less-dirty block, and - * search harder. - * else (we're doing a leasurely gc), then we only bother to do this if the - * block has only a few pages in use. - */ - - dev->nonAggressiveSkip--; - - if (!aggressive && (dev->nonAggressiveSkip > 0)) - return -1; - - if (!prioritised) - pagesInUse = - (aggressive) ? dev->nChunksPerBlock : YAFFS_PASSIVE_GC_CHUNKS + 1; - - if (aggressive) - iterations = - dev->internalEndBlock - dev->internalStartBlock + 1; - else { - iterations = - dev->internalEndBlock - dev->internalStartBlock + 1; - iterations = iterations / 16; - if (iterations > 200) - iterations = 200; - } - - for (i = 0; i <= iterations && pagesInUse > 0 && !prioritised; i++) { - b++; - if (b < dev->internalStartBlock || b > dev->internalEndBlock) - b = dev->internalStartBlock; - - if (b < dev->internalStartBlock || b > dev->internalEndBlock) { - T(YAFFS_TRACE_ERROR, - (TSTR("**>> Block %d is not valid" TENDSTR), b)); - YBUG(); - } - - bi = yaffs_GetBlockInfo(dev, b); - - if (bi->blockState == YAFFS_BLOCK_STATE_FULL && - (bi->pagesInUse - bi->softDeletions) < pagesInUse && - yaffs_BlockNotDisqualifiedFromGC(dev, bi)) { - dirtiest = b; - pagesInUse = (bi->pagesInUse - bi->softDeletions); - } - } - - dev->currentDirtyChecker = b; - - if (dirtiest > 0) { - T(YAFFS_TRACE_GC, - (TSTR("GC Selected block %d with %d free, prioritised:%d" TENDSTR), dirtiest, - dev->nChunksPerBlock - pagesInUse, prioritised)); - } - - dev->oldestDirtySequence = 0; - - if (dirtiest > 0) - dev->nonAggressiveSkip = 4; - - return dirtiest; -} - -static void yaffs_BlockBecameDirty(yaffs_Device *dev, int blockNo) -{ - yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, blockNo); + yaffs_block_info_t *bi = yaffs_get_block_info(dev, block_no); int erasedOk = 0; @@ -2714,64 +1883,77 @@ static void yaffs_BlockBecameDirty(yaffs_Device *dev, int blockNo) */ T(YAFFS_TRACE_GC | YAFFS_TRACE_ERASE, - (TSTR("yaffs_BlockBecameDirty block %d state %d %s"TENDSTR), - blockNo, bi->blockState, (bi->needsRetiring) ? "needs retiring" : "")); + (TSTR("yaffs_block_became_dirty block %d state %d %s"TENDSTR), + block_no, bi->block_state, (bi->needs_retiring) ? "needs retiring" : "")); - bi->blockState = YAFFS_BLOCK_STATE_DIRTY; + yaffs2_clear_oldest_dirty_seq(dev,bi); - if (!bi->needsRetiring) { - yaffs_InvalidateCheckpoint(dev); - erasedOk = yaffs_EraseBlockInNAND(dev, blockNo); + bi->block_state = YAFFS_BLOCK_STATE_DIRTY; + + /* If this is the block being garbage collected then stop gc'ing this block */ + if(block_no == dev->gc_block) + dev->gc_block = 0; + + /* If this block is currently the best candidate for gc then drop as a candidate */ + if(block_no == dev->gc_dirtiest){ + dev->gc_dirtiest = 0; + dev->gc_pages_in_use = 0; + } + + if (!bi->needs_retiring) { + yaffs2_checkpt_invalidate(dev); + erasedOk = yaffs_erase_block(dev, block_no); if (!erasedOk) { - dev->nErasureFailures++; + dev->n_erase_failures++; T(YAFFS_TRACE_ERROR | YAFFS_TRACE_BAD_BLOCKS, - (TSTR("**>> Erasure failed %d" TENDSTR), blockNo)); + (TSTR("**>> Erasure failed %d" TENDSTR), block_no)); } } if (erasedOk && - ((yaffs_traceMask & YAFFS_TRACE_ERASE) || !yaffs_SkipVerification(dev))) { + ((yaffs_trace_mask & YAFFS_TRACE_ERASE) || !yaffs_skip_verification(dev))) { int i; - for (i = 0; i < dev->nChunksPerBlock; i++) { - if (!yaffs_CheckChunkErased - (dev, blockNo * dev->nChunksPerBlock + i)) { + for (i = 0; i < dev->param.chunks_per_block; i++) { + if (!yaffs_check_chunk_erased + (dev, block_no * dev->param.chunks_per_block + i)) { T(YAFFS_TRACE_ERROR, (TSTR (">>Block %d erasure supposedly OK, but chunk %d not erased" - TENDSTR), blockNo, i)); + TENDSTR), block_no, i)); } } } if (erasedOk) { /* Clean it up... */ - bi->blockState = YAFFS_BLOCK_STATE_EMPTY; - dev->nErasedBlocks++; - bi->pagesInUse = 0; - bi->softDeletions = 0; - bi->hasShrinkHeader = 0; - bi->skipErasedCheck = 1; /* This is clean, so no need to check */ - bi->gcPrioritise = 0; - yaffs_ClearChunkBits(dev, blockNo); + bi->block_state = YAFFS_BLOCK_STATE_EMPTY; + bi->seq_number = 0; + dev->n_erased_blocks++; + bi->pages_in_use = 0; + bi->soft_del_pages = 0; + bi->has_shrink_hdr = 0; + bi->skip_erased_check = 1; /* This is clean, so no need to check */ + bi->gc_prioritise = 0; + yaffs_clear_chunk_bits(dev, block_no); T(YAFFS_TRACE_ERASE, - (TSTR("Erased block %d" TENDSTR), blockNo)); + (TSTR("Erased block %d" TENDSTR), block_no)); } else { - dev->nFreeChunks -= dev->nChunksPerBlock; /* We lost a block of free space */ + dev->n_free_chunks -= dev->param.chunks_per_block; /* We lost a block of free space */ - yaffs_RetireBlock(dev, blockNo); + yaffs_retire_block(dev, block_no); T(YAFFS_TRACE_ERROR | YAFFS_TRACE_BAD_BLOCKS, - (TSTR("**>> Block %d retired" TENDSTR), blockNo)); + (TSTR("**>> Block %d retired" TENDSTR), block_no)); } } -static int yaffs_FindBlockForAllocation(yaffs_Device *dev) +static int yaffs_find_alloc_block(yaffs_dev_t *dev) { int i; - yaffs_BlockInfo *bi; + yaffs_block_info_t *bi; - if (dev->nErasedBlocks < 1) { + if (dev->n_erased_blocks < 1) { /* Hoosterman we've got a problem. * Can't get space to gc */ @@ -2783,136 +1965,94 @@ static int yaffs_FindBlockForAllocation(yaffs_Device *dev) /* Find an empty block. */ - for (i = dev->internalStartBlock; i <= dev->internalEndBlock; i++) { - dev->allocationBlockFinder++; - if (dev->allocationBlockFinder < dev->internalStartBlock - || dev->allocationBlockFinder > dev->internalEndBlock) { - dev->allocationBlockFinder = dev->internalStartBlock; + for (i = dev->internal_start_block; i <= dev->internal_end_block; i++) { + dev->alloc_block_finder++; + if (dev->alloc_block_finder < dev->internal_start_block + || dev->alloc_block_finder > dev->internal_end_block) { + dev->alloc_block_finder = dev->internal_start_block; } - bi = yaffs_GetBlockInfo(dev, dev->allocationBlockFinder); + bi = yaffs_get_block_info(dev, dev->alloc_block_finder); - if (bi->blockState == YAFFS_BLOCK_STATE_EMPTY) { - bi->blockState = YAFFS_BLOCK_STATE_ALLOCATING; - dev->sequenceNumber++; - bi->sequenceNumber = dev->sequenceNumber; - dev->nErasedBlocks--; + if (bi->block_state == YAFFS_BLOCK_STATE_EMPTY) { + bi->block_state = YAFFS_BLOCK_STATE_ALLOCATING; + dev->seq_number++; + bi->seq_number = dev->seq_number; + dev->n_erased_blocks--; T(YAFFS_TRACE_ALLOCATE, (TSTR("Allocated block %d, seq %d, %d left" TENDSTR), - dev->allocationBlockFinder, dev->sequenceNumber, - dev->nErasedBlocks)); - return dev->allocationBlockFinder; + dev->alloc_block_finder, dev->seq_number, + dev->n_erased_blocks)); + return dev->alloc_block_finder; } } T(YAFFS_TRACE_ALWAYS, (TSTR ("yaffs tragedy: no more erased blocks, but there should have been %d" - TENDSTR), dev->nErasedBlocks)); + TENDSTR), dev->n_erased_blocks)); return -1; } - -static int yaffs_CalcCheckpointBlocksRequired(yaffs_Device *dev) -{ - if (!dev->nCheckpointBlocksRequired && - dev->isYaffs2) { - /* Not a valid value so recalculate */ - int nBytes = 0; - int nBlocks; - int devBlocks = (dev->endBlock - dev->startBlock + 1); - int tnodeSize; - - tnodeSize = (dev->tnodeWidth * YAFFS_NTNODES_LEVEL0)/8; - - if (tnodeSize < sizeof(yaffs_Tnode)) - tnodeSize = sizeof(yaffs_Tnode); - - nBytes += sizeof(yaffs_CheckpointValidity); - nBytes += sizeof(yaffs_CheckpointDevice); - nBytes += devBlocks * sizeof(yaffs_BlockInfo); - nBytes += devBlocks * dev->chunkBitmapStride; - nBytes += (sizeof(yaffs_CheckpointObject) + sizeof(__u32)) * (dev->nObjectsCreated - dev->nFreeObjects); - nBytes += (tnodeSize + sizeof(__u32)) * (dev->nTnodesCreated - dev->nFreeTnodes); - nBytes += sizeof(yaffs_CheckpointValidity); - nBytes += sizeof(__u32); /* checksum*/ - - /* Round up and add 2 blocks to allow for some bad blocks, so add 3 */ - - nBlocks = (nBytes/(dev->nDataBytesPerChunk * dev->nChunksPerBlock)) + 3; - - dev->nCheckpointBlocksRequired = nBlocks; - } - - return dev->nCheckpointBlocksRequired; -} - /* * Check if there's space to allocate... - * Thinks.... do we need top make this ths same as yaffs_GetFreeChunks()? + * Thinks.... do we need top make this ths same as yaffs_get_free_chunks()? */ -static int yaffs_CheckSpaceForAllocation(yaffs_Device *dev) +int yaffs_check_alloc_available(yaffs_dev_t *dev, int n_chunks) { int reservedChunks; - int reservedBlocks = dev->nReservedBlocks; + int reservedBlocks = dev->param.n_reserved_blocks; int checkpointBlocks; - if (dev->isYaffs2) { - checkpointBlocks = yaffs_CalcCheckpointBlocksRequired(dev) - - dev->blocksInCheckpoint; - if (checkpointBlocks < 0) - checkpointBlocks = 0; - } else { - checkpointBlocks = 0; - } + checkpointBlocks = yaffs_calc_checkpt_blocks_required(dev); - reservedChunks = ((reservedBlocks + checkpointBlocks) * dev->nChunksPerBlock); + reservedChunks = ((reservedBlocks + checkpointBlocks) * dev->param.chunks_per_block); - return (dev->nFreeChunks > reservedChunks); + return (dev->n_free_chunks > (reservedChunks + n_chunks)); } -static int yaffs_AllocateChunk(yaffs_Device *dev, int useReserve, - yaffs_BlockInfo **blockUsedPtr) +static int yaffs_alloc_chunk(yaffs_dev_t *dev, int useReserve, + yaffs_block_info_t **blockUsedPtr) { int retVal; - yaffs_BlockInfo *bi; + yaffs_block_info_t *bi; - if (dev->allocationBlock < 0) { + if (dev->alloc_block < 0) { /* Get next block to allocate off */ - dev->allocationBlock = yaffs_FindBlockForAllocation(dev); - dev->allocationPage = 0; + dev->alloc_block = yaffs_find_alloc_block(dev); + dev->alloc_page = 0; } - if (!useReserve && !yaffs_CheckSpaceForAllocation(dev)) { + if (!useReserve && !yaffs_check_alloc_available(dev, 1)) { /* Not enough space to allocate unless we're allowed to use the reserve. */ return -1; } - if (dev->nErasedBlocks < dev->nReservedBlocks - && dev->allocationPage == 0) { + if (dev->n_erased_blocks < dev->param.n_reserved_blocks + && dev->alloc_page == 0) { T(YAFFS_TRACE_ALLOCATE, (TSTR("Allocating reserve" TENDSTR))); } /* Next page please.... */ - if (dev->allocationBlock >= 0) { - bi = yaffs_GetBlockInfo(dev, dev->allocationBlock); + if (dev->alloc_block >= 0) { + bi = yaffs_get_block_info(dev, dev->alloc_block); - retVal = (dev->allocationBlock * dev->nChunksPerBlock) + - dev->allocationPage; - bi->pagesInUse++; - yaffs_SetChunkBit(dev, dev->allocationBlock, - dev->allocationPage); + retVal = (dev->alloc_block * dev->param.chunks_per_block) + + dev->alloc_page; + bi->pages_in_use++; + yaffs_set_chunk_bit(dev, dev->alloc_block, + dev->alloc_page); - dev->allocationPage++; + dev->alloc_page++; - dev->nFreeChunks--; + dev->n_free_chunks--; /* If the block is full set the state to full */ - if (dev->allocationPage >= dev->nChunksPerBlock) { - bi->blockState = YAFFS_BLOCK_STATE_FULL; - dev->allocationBlock = -1; + if (dev->alloc_page >= dev->param.chunks_per_block) { + bi->block_state = YAFFS_BLOCK_STATE_FULL; + dev->alloc_block = -1; } if (blockUsedPtr) @@ -2927,120 +2067,132 @@ static int yaffs_AllocateChunk(yaffs_Device *dev, int useReserve, return -1; } -static int yaffs_GetErasedChunks(yaffs_Device *dev) +static int yaffs_get_erased_chunks(yaffs_dev_t *dev) { int n; - n = dev->nErasedBlocks * dev->nChunksPerBlock; + n = dev->n_erased_blocks * dev->param.chunks_per_block; - if (dev->allocationBlock > 0) - n += (dev->nChunksPerBlock - dev->allocationPage); + if (dev->alloc_block > 0) + n += (dev->param.chunks_per_block - dev->alloc_page); return n; } -static int yaffs_GarbageCollectBlock(yaffs_Device *dev, int block, +/* + * yaffs_skip_rest_of_block() skips over the rest of the allocation block + * if we don't want to write to it. + */ +void yaffs_skip_rest_of_block(yaffs_dev_t *dev) +{ + if(dev->alloc_block > 0){ + yaffs_block_info_t *bi = yaffs_get_block_info(dev, dev->alloc_block); + if(bi->block_state == YAFFS_BLOCK_STATE_ALLOCATING){ + bi->block_state = YAFFS_BLOCK_STATE_FULL; + dev->alloc_block = -1; + } + } +} + + +static int yaffs_gc_block(yaffs_dev_t *dev, int block, int wholeBlock) { int oldChunk; int newChunk; - int markNAND; + int mark_flash; int retVal = YAFFS_OK; - int cleanups = 0; int i; int isCheckpointBlock; int matchingChunk; int maxCopies; - int chunksBefore = yaffs_GetErasedChunks(dev); + int chunksBefore = yaffs_get_erased_chunks(dev); int chunksAfter; - yaffs_ExtendedTags tags; + yaffs_ext_tags tags; - yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, block); + yaffs_block_info_t *bi = yaffs_get_block_info(dev, block); - yaffs_Object *object; + yaffs_obj_t *object; - isCheckpointBlock = (bi->blockState == YAFFS_BLOCK_STATE_CHECKPOINT); + isCheckpointBlock = (bi->block_state == YAFFS_BLOCK_STATE_CHECKPOINT); - bi->blockState = YAFFS_BLOCK_STATE_COLLECTING; T(YAFFS_TRACE_TRACING, (TSTR("Collecting block %d, in use %d, shrink %d, wholeBlock %d" TENDSTR), block, - bi->pagesInUse, - bi->hasShrinkHeader, + bi->pages_in_use, + bi->has_shrink_hdr, wholeBlock)); - /*yaffs_VerifyFreeChunks(dev); */ - - bi->hasShrinkHeader = 0; /* clear the flag so that the block can erase */ + /*yaffs_verify_free_chunks(dev); */ - /* Take off the number of soft deleted entries because - * they're going to get really deleted during GC. - */ - dev->nFreeChunks -= bi->softDeletions; + if(bi->block_state == YAFFS_BLOCK_STATE_FULL) + bi->block_state = YAFFS_BLOCK_STATE_COLLECTING; + + bi->has_shrink_hdr = 0; /* clear the flag so that the block can erase */ - dev->isDoingGC = 1; + dev->gc_disable = 1; if (isCheckpointBlock || - !yaffs_StillSomeChunkBits(dev, block)) { + !yaffs_still_some_chunks(dev, block)) { T(YAFFS_TRACE_TRACING, (TSTR ("Collecting block %d that has no chunks in use" TENDSTR), block)); - yaffs_BlockBecameDirty(dev, block); + yaffs_block_became_dirty(dev, block); } else { - __u8 *buffer = yaffs_GetTempBuffer(dev, __LINE__); + __u8 *buffer = yaffs_get_temp_buffer(dev, __LINE__); - yaffs_VerifyBlock(dev, bi, block); + yaffs_verify_blk(dev, bi, block); - maxCopies = (wholeBlock) ? dev->nChunksPerBlock : 10; - oldChunk = block * dev->nChunksPerBlock + dev->gcChunk; + maxCopies = (wholeBlock) ? dev->param.chunks_per_block : 5; + oldChunk = block * dev->param.chunks_per_block + dev->gc_chunk; for (/* init already done */; retVal == YAFFS_OK && - dev->gcChunk < dev->nChunksPerBlock && - (bi->blockState == YAFFS_BLOCK_STATE_COLLECTING) && + dev->gc_chunk < dev->param.chunks_per_block && + (bi->block_state == YAFFS_BLOCK_STATE_COLLECTING) && maxCopies > 0; - dev->gcChunk++, oldChunk++) { - if (yaffs_CheckChunkBit(dev, block, dev->gcChunk)) { + dev->gc_chunk++, oldChunk++) { + if (yaffs_check_chunk_bit(dev, block, dev->gc_chunk)) { /* This page is in use and might need to be copied off */ maxCopies--; - markNAND = 1; + mark_flash = 1; - yaffs_InitialiseTags(&tags); + yaffs_init_tags(&tags); - yaffs_ReadChunkWithTagsFromNAND(dev, oldChunk, + yaffs_rd_chunk_tags_nand(dev, oldChunk, buffer, &tags); object = - yaffs_FindObjectByNumber(dev, - tags.objectId); + yaffs_find_by_number(dev, + tags.obj_id); T(YAFFS_TRACE_GC_DETAIL, (TSTR ("Collecting chunk in block %d, %d %d %d " TENDSTR), - dev->gcChunk, tags.objectId, tags.chunkId, - tags.byteCount)); + dev->gc_chunk, tags.obj_id, tags.chunk_id, + tags.n_bytes)); - if (object && !yaffs_SkipVerification(dev)) { - if (tags.chunkId == 0) - matchingChunk = object->hdrChunk; - else if (object->softDeleted) + if (object && !yaffs_skip_verification(dev)) { + if (tags.chunk_id == 0) + matchingChunk = object->hdr_chunk; + else if (object->soft_del) matchingChunk = oldChunk; /* Defeat the test */ else - matchingChunk = yaffs_FindChunkInFile(object, tags.chunkId, NULL); + matchingChunk = yaffs_find_chunk_in_file(object, tags.chunk_id, NULL); if (oldChunk != matchingChunk) T(YAFFS_TRACE_ERROR, (TSTR("gc: page in gc mismatch: %d %d %d %d"TENDSTR), - oldChunk, matchingChunk, tags.objectId, tags.chunkId)); + oldChunk, matchingChunk, tags.obj_id, tags.chunk_id)); } @@ -3049,39 +2201,47 @@ static int yaffs_GarbageCollectBlock(yaffs_Device *dev, int block, (TSTR ("page %d in gc has no object: %d %d %d " TENDSTR), oldChunk, - tags.objectId, tags.chunkId, tags.byteCount)); + tags.obj_id, tags.chunk_id, tags.n_bytes)); } if (object && object->deleted && - object->softDeleted && - tags.chunkId != 0) { + object->soft_del && + tags.chunk_id != 0) { /* Data chunk in a soft deleted file, throw it away * It's a soft deleted data chunk, * No need to copy this, just forget about it and * fix up the object. */ + + /* Free chunks already includes softdeleted chunks. + * How ever this chunk is going to soon be really deleted + * which will increment free chunks. + * We have to decrement free chunks so this works out properly. + */ + dev->n_free_chunks--; + bi->soft_del_pages--; - object->nDataChunks--; + object->n_data_chunks--; - if (object->nDataChunks <= 0) { + if (object->n_data_chunks <= 0) { /* remeber to clean up the object */ - dev->gcCleanupList[cleanups] = - tags.objectId; - cleanups++; + dev->gc_cleanup_list[dev->n_clean_ups] = + tags.obj_id; + dev->n_clean_ups++; } - markNAND = 0; + mark_flash = 0; } else if (0) { - /* Todo object && object->deleted && object->nDataChunks == 0 */ + /* Todo object && object->deleted && object->n_data_chunks == 0 */ /* Deleted object header with no data chunks. * Can be discarded and the file deleted. */ - object->hdrChunk = 0; - yaffs_FreeTnode(object->myDev, + object->hdr_chunk = 0; + yaffs_free_tnode(object->my_dev, object->variant. - fileVariant.top); - object->variant.fileVariant.top = NULL; - yaffs_DoGenericObjectDeletion(object); + file_variant.top); + object->variant.file_variant.top = NULL; + yaffs_generic_obj_del(object); } else if (object) { /* It's either a data chunk in a live file or @@ -3089,27 +2249,40 @@ static int yaffs_GarbageCollectBlock(yaffs_Device *dev, int block, * NB Need to keep the ObjectHeaders of deleted files * until the whole file has been deleted off */ - tags.serialNumber++; + tags.serial_number++; - dev->nGCCopies++; + dev->n_gc_copies++; - if (tags.chunkId == 0) { + if (tags.chunk_id == 0) { /* It is an object Id, * We need to nuke the shrinkheader flags first + * Also need to clean up shadowing. * We no longer want the shrinkHeader flag since its work is done * and if it is left in place it will mess up scanning. */ - yaffs_ObjectHeader *oh; - oh = (yaffs_ObjectHeader *)buffer; - oh->isShrink = 0; - tags.extraIsShrinkHeader = 0; + yaffs_obj_header *oh; + oh = (yaffs_obj_header *)buffer; - yaffs_VerifyObjectHeader(object, oh, &tags, 1); - } + oh->is_shrink = 0; + tags.extra_is_shrink = 0; + + oh->shadows_obj = 0; + oh->inband_shadowed_obj_id = 0; + tags.extra_shadows = 0; - newChunk = - yaffs_WriteNewChunkWithTagsToNAND(dev, buffer, &tags, 1); + /* Update file size */ + if(object->variant_type == YAFFS_OBJECT_TYPE_FILE){ + oh->file_size = object->variant.file_variant.file_size; + tags.extra_length = oh->file_size; + } + + yaffs_verify_oh(object, oh, &tags, 1); + newChunk = + yaffs_write_new_chunk(dev,(__u8 *) oh, &tags, 1); + } else + newChunk = + yaffs_write_new_chunk(dev, buffer, &tags, 1); if (newChunk < 0) { retVal = YAFFS_FAIL; @@ -3117,71 +2290,243 @@ static int yaffs_GarbageCollectBlock(yaffs_Device *dev, int block, /* Ok, now fix up the Tnodes etc. */ - if (tags.chunkId == 0) { + if (tags.chunk_id == 0) { /* It's a header */ - object->hdrChunk = newChunk; - object->serial = tags.serialNumber; + object->hdr_chunk = newChunk; + object->serial = tags.serial_number; } else { /* It's a data chunk */ - yaffs_PutChunkIntoFile + int ok; + ok = yaffs_put_chunk_in_file (object, - tags.chunkId, + tags.chunk_id, newChunk, 0); } } } if (retVal == YAFFS_OK) - yaffs_DeleteChunk(dev, oldChunk, markNAND, __LINE__); + yaffs_chunk_del(dev, oldChunk, mark_flash, __LINE__); } } - yaffs_ReleaseTempBuffer(dev, buffer, __LINE__); + yaffs_release_temp_buffer(dev, buffer, __LINE__); + + } + + yaffs_verify_collected_blk(dev, bi, block); + + + + if (bi->block_state == YAFFS_BLOCK_STATE_COLLECTING) { + /* + * The gc did not complete. Set block state back to FULL + * because checkpointing does not restore gc. + */ + bi->block_state = YAFFS_BLOCK_STATE_FULL; + } else { + /* The gc completed. */ /* Do any required cleanups */ - for (i = 0; i < cleanups; i++) { + for (i = 0; i < dev->n_clean_ups; i++) { /* Time to delete the file too */ object = - yaffs_FindObjectByNumber(dev, - dev->gcCleanupList[i]); + yaffs_find_by_number(dev, + dev->gc_cleanup_list[i]); if (object) { - yaffs_FreeTnode(dev, - object->variant.fileVariant. + yaffs_free_tnode(dev, + object->variant.file_variant. top); - object->variant.fileVariant.top = NULL; + object->variant.file_variant.top = NULL; T(YAFFS_TRACE_GC, (TSTR ("yaffs: About to finally delete object %d" - TENDSTR), object->objectId)); - yaffs_DoGenericObjectDeletion(object); - object->myDev->nDeletedFiles--; + TENDSTR), object->obj_id)); + yaffs_generic_obj_del(object); + object->my_dev->n_deleted_files--; } } + + chunksAfter = yaffs_get_erased_chunks(dev); + if (chunksBefore >= chunksAfter) { + T(YAFFS_TRACE_GC, + (TSTR + ("gc did not increase free chunks before %d after %d" + TENDSTR), chunksBefore, chunksAfter)); + } + dev->gc_block = 0; + dev->gc_chunk = 0; + dev->n_clean_ups = 0; } - yaffs_VerifyCollectedBlock(dev, bi, block); + dev->gc_disable = 0; - chunksAfter = yaffs_GetErasedChunks(dev); - if (chunksBefore >= chunksAfter) { - T(YAFFS_TRACE_GC, - (TSTR - ("gc did not increase free chunks before %d after %d" - TENDSTR), chunksBefore, chunksAfter)); + return retVal; +} + +/* + * FindBlockForgarbageCollection is used to select the dirtiest block (or close enough) + * for garbage collection. + */ + +static unsigned yaffs_find_gc_block(yaffs_dev_t *dev, + int aggressive, + int background) +{ + int i; + int iterations; + unsigned selected = 0; + int prioritised = 0; + int prioritisedExists = 0; + yaffs_block_info_t *bi; + int threshold; + + /* First let's see if we need to grab a prioritised block */ + if (dev->has_pending_prioritised_gc && !aggressive) { + dev->gc_dirtiest = 0; + bi = dev->block_info; + for (i = dev->internal_start_block; + i <= dev->internal_end_block && !selected; + i++) { + + if (bi->gc_prioritise) { + prioritisedExists = 1; + if (bi->block_state == YAFFS_BLOCK_STATE_FULL && + yaffs_block_ok_for_gc(dev, bi)) { + selected = i; + prioritised = 1; + } + } + bi++; + } + + /* + * If there is a prioritised block and none was selected then + * this happened because there is at least one old dirty block gumming + * up the works. Let's gc the oldest dirty block. + */ + + if(prioritisedExists && + !selected && + dev->oldest_dirty_block > 0) + selected = dev->oldest_dirty_block; + + if (!prioritisedExists) /* None found, so we can clear this */ + dev->has_pending_prioritised_gc = 0; } - /* If the gc completed then clear the current gcBlock so that we find another. */ - if (bi->blockState != YAFFS_BLOCK_STATE_COLLECTING) { - dev->gcBlock = -1; - dev->gcChunk = 0; + /* If we're doing aggressive GC then we are happy to take a less-dirty block, and + * search harder. + * else (we're doing a leasurely gc), then we only bother to do this if the + * block has only a few pages in use. + */ + + if (!selected){ + int pagesUsed; + int nBlocks = dev->internal_end_block - dev->internal_start_block + 1; + if (aggressive){ + threshold = dev->param.chunks_per_block; + iterations = nBlocks; + } else { + int maxThreshold; + + if(background) + maxThreshold = dev->param.chunks_per_block/2; + else + maxThreshold = dev->param.chunks_per_block/8; + + if(maxThreshold < YAFFS_GC_PASSIVE_THRESHOLD) + maxThreshold = YAFFS_GC_PASSIVE_THRESHOLD; + + threshold = background ? + (dev->gc_not_done + 2) * 2 : 0; + if(threshold <YAFFS_GC_PASSIVE_THRESHOLD) + threshold = YAFFS_GC_PASSIVE_THRESHOLD; + if(threshold > maxThreshold) + threshold = maxThreshold; + + iterations = nBlocks / 16 + 1; + if (iterations > 100) + iterations = 100; + } + + for (i = 0; + i < iterations && + (dev->gc_dirtiest < 1 || + dev->gc_pages_in_use > YAFFS_GC_GOOD_ENOUGH); + i++) { + dev->gc_block_finder++; + if (dev->gc_block_finder < dev->internal_start_block || + dev->gc_block_finder > dev->internal_end_block) + dev->gc_block_finder = dev->internal_start_block; + + bi = yaffs_get_block_info(dev, dev->gc_block_finder); + + pagesUsed = bi->pages_in_use - bi->soft_del_pages; + + if (bi->block_state == YAFFS_BLOCK_STATE_FULL && + pagesUsed < dev->param.chunks_per_block && + (dev->gc_dirtiest < 1 || pagesUsed < dev->gc_pages_in_use) && + yaffs_block_ok_for_gc(dev, bi)) { + dev->gc_dirtiest = dev->gc_block_finder; + dev->gc_pages_in_use = pagesUsed; + } + } + + if(dev->gc_dirtiest > 0 && dev->gc_pages_in_use <= threshold) + selected = dev->gc_dirtiest; } - dev->isDoingGC = 0; + /* + * If nothing has been selected for a while, try selecting the oldest dirty + * because that's gumming up the works. + */ - return retVal; + if(!selected && dev->param.is_yaffs2 && + dev->gc_not_done >= ( background ? 10 : 20)){ + yaffs2_find_oldest_dirty_seq(dev); + if(dev->oldest_dirty_block > 0) { + selected = dev->oldest_dirty_block; + dev->gc_dirtiest = selected; + dev->oldest_dirty_gc_count++; + bi = yaffs_get_block_info(dev, selected); + dev->gc_pages_in_use = bi->pages_in_use - bi->soft_del_pages; + } else + dev->gc_not_done = 0; + } + + if(selected){ + T(YAFFS_TRACE_GC, + (TSTR("GC Selected block %d with %d free, prioritised:%d" TENDSTR), + selected, + dev->param.chunks_per_block - dev->gc_pages_in_use, + prioritised)); + + dev->n_gc_blocks++; + if(background) + dev->bg_gcs++; + + dev->gc_dirtiest = 0; + dev->gc_pages_in_use = 0; + dev->gc_not_done = 0; + if(dev->refresh_skip > 0) + dev->refresh_skip--; + } else{ + dev->gc_not_done++; + T(YAFFS_TRACE_GC, + (TSTR("GC none: finder %d skip %d threshold %d dirtiest %d using %d oldest %d%s" TENDSTR), + dev->gc_block_finder, dev->gc_not_done, + threshold, + dev->gc_dirtiest, dev->gc_pages_in_use, + dev->oldest_dirty_block, + background ? " bg" : "")); + } + + return selected; } /* New garbage collector @@ -3193,122 +2538,161 @@ static int yaffs_GarbageCollectBlock(yaffs_Device *dev, int block, * The idea is to help clear out space in a more spread-out manner. * Dunno if it really does anything useful. */ -static int yaffs_CheckGarbageCollection(yaffs_Device *dev) +static int yaffs_check_gc(yaffs_dev_t *dev, int background) { - int block; - int aggressive; + int aggressive = 0; int gcOk = YAFFS_OK; int maxTries = 0; - + int minErased; + int erasedChunks; int checkpointBlockAdjust; - if (dev->isDoingGC) { + if(dev->param.gc_control && + (dev->param.gc_control(dev) & 1) == 0) + return YAFFS_OK; + + if (dev->gc_disable) { /* Bail out so we don't get recursive gc */ return YAFFS_OK; } /* This loop should pass the first time. - * We'll only see looping here if the erase of the collected block fails. + * We'll only see looping here if the collection does not increase space. */ do { maxTries++; - checkpointBlockAdjust = yaffs_CalcCheckpointBlocksRequired(dev) - dev->blocksInCheckpoint; - if (checkpointBlockAdjust < 0) - checkpointBlockAdjust = 0; + checkpointBlockAdjust = yaffs_calc_checkpt_blocks_required(dev); + + minErased = dev->param.n_reserved_blocks + checkpointBlockAdjust + 1; + erasedChunks = dev->n_erased_blocks * dev->param.chunks_per_block; - if (dev->nErasedBlocks < (dev->nReservedBlocks + checkpointBlockAdjust + 2)) { - /* We need a block soon...*/ + /* If we need a block soon then do aggressive gc.*/ + if (dev->n_erased_blocks < minErased) aggressive = 1; - } else { - /* We're in no hurry */ - aggressive = 0; + else { + if(!background && erasedChunks > (dev->n_free_chunks / 4)) + break; + + if(dev->gc_skip > 20) + dev->gc_skip = 20; + if(erasedChunks < dev->n_free_chunks/2 || + dev->gc_skip < 1 || + background) + aggressive = 0; + else { + dev->gc_skip--; + break; + } } - if (dev->gcBlock <= 0) { - dev->gcBlock = yaffs_FindBlockForGarbageCollection(dev, aggressive); - dev->gcChunk = 0; - } + dev->gc_skip = 5; - block = dev->gcBlock; + /* If we don't already have a block being gc'd then see if we should start another */ + + if (dev->gc_block < 1 && !aggressive) { + dev->gc_block = yaffs2_find_refresh_block(dev); + dev->gc_chunk = 0; + dev->n_clean_ups=0; + } + if (dev->gc_block < 1) { + dev->gc_block = yaffs_find_gc_block(dev, aggressive, background); + dev->gc_chunk = 0; + dev->n_clean_ups=0; + } - if (block > 0) { - dev->garbageCollections++; + if (dev->gc_block > 0) { + dev->all_gcs++; if (!aggressive) - dev->passiveGarbageCollections++; + dev->passive_gc_count++; T(YAFFS_TRACE_GC, (TSTR ("yaffs: GC erasedBlocks %d aggressive %d" TENDSTR), - dev->nErasedBlocks, aggressive)); + dev->n_erased_blocks, aggressive)); - gcOk = yaffs_GarbageCollectBlock(dev, block, aggressive); + gcOk = yaffs_gc_block(dev, dev->gc_block, aggressive); } - if (dev->nErasedBlocks < (dev->nReservedBlocks) && block > 0) { + if (dev->n_erased_blocks < (dev->param.n_reserved_blocks) && dev->gc_block > 0) { T(YAFFS_TRACE_GC, (TSTR ("yaffs: GC !!!no reclaim!!! erasedBlocks %d after try %d block %d" - TENDSTR), dev->nErasedBlocks, maxTries, block)); + TENDSTR), dev->n_erased_blocks, maxTries, dev->gc_block)); } - } while ((dev->nErasedBlocks < dev->nReservedBlocks) && - (block > 0) && + } while ((dev->n_erased_blocks < dev->param.n_reserved_blocks) && + (dev->gc_block > 0) && (maxTries < 2)); return aggressive ? gcOk : YAFFS_OK; } +/* + * yaffs_bg_gc() + * Garbage collects. Intended to be called from a background thread. + * Returns non-zero if at least half the free chunks are erased. + */ +int yaffs_bg_gc(yaffs_dev_t *dev, unsigned urgency) +{ + int erasedChunks = dev->n_erased_blocks * dev->param.chunks_per_block; + + T(YAFFS_TRACE_BACKGROUND, (TSTR("Background gc %u" TENDSTR),urgency)); + + yaffs_check_gc(dev, 1); + return erasedChunks > dev->n_free_chunks/2; +} + /*------------------------- TAGS --------------------------------*/ -static int yaffs_TagsMatch(const yaffs_ExtendedTags *tags, int objectId, +static int yaffs_tags_match(const yaffs_ext_tags *tags, int obj_id, int chunkInObject) { - return (tags->chunkId == chunkInObject && - tags->objectId == objectId && !tags->chunkDeleted) ? 1 : 0; + return (tags->chunk_id == chunkInObject && + tags->obj_id == obj_id && !tags->is_deleted) ? 1 : 0; } /*-------------------- Data file manipulation -----------------*/ -static int yaffs_FindChunkInFile(yaffs_Object *in, int chunkInInode, - yaffs_ExtendedTags *tags) +static int yaffs_find_chunk_in_file(yaffs_obj_t *in, int inode_chunk, + yaffs_ext_tags *tags) { /*Get the Tnode, then get the level 0 offset chunk offset */ - yaffs_Tnode *tn; + yaffs_tnode_t *tn; int theChunk = -1; - yaffs_ExtendedTags localTags; + yaffs_ext_tags localTags; int retVal = -1; - yaffs_Device *dev = in->myDev; + yaffs_dev_t *dev = in->my_dev; if (!tags) { /* Passed a NULL, so use our own tags space */ tags = &localTags; } - tn = yaffs_FindLevel0Tnode(dev, &in->variant.fileVariant, chunkInInode); + tn = yaffs_find_tnode_0(dev, &in->variant.file_variant, inode_chunk); if (tn) { - theChunk = yaffs_GetChunkGroupBase(dev, tn, chunkInInode); + theChunk = yaffs_get_group_base(dev, tn, inode_chunk); retVal = - yaffs_FindChunkInGroup(dev, theChunk, tags, in->objectId, - chunkInInode); + yaffs_find_chunk_in_group(dev, theChunk, tags, in->obj_id, + inode_chunk); } return retVal; } -static int yaffs_FindAndDeleteChunkInFile(yaffs_Object *in, int chunkInInode, - yaffs_ExtendedTags *tags) +static int yaffs_find_del_file_chunk(yaffs_obj_t *in, int inode_chunk, + yaffs_ext_tags *tags) { /* Get the Tnode, then get the level 0 offset chunk offset */ - yaffs_Tnode *tn; + yaffs_tnode_t *tn; int theChunk = -1; - yaffs_ExtendedTags localTags; + yaffs_ext_tags localTags; - yaffs_Device *dev = in->myDev; + yaffs_dev_t *dev = in->my_dev; int retVal = -1; if (!tags) { @@ -3316,102 +2700,47 @@ static int yaffs_FindAndDeleteChunkInFile(yaffs_Object *in, int chunkInInode, tags = &localTags; } - tn = yaffs_FindLevel0Tnode(dev, &in->variant.fileVariant, chunkInInode); + tn = yaffs_find_tnode_0(dev, &in->variant.file_variant, inode_chunk); if (tn) { - theChunk = yaffs_GetChunkGroupBase(dev, tn, chunkInInode); + theChunk = yaffs_get_group_base(dev, tn, inode_chunk); retVal = - yaffs_FindChunkInGroup(dev, theChunk, tags, in->objectId, - chunkInInode); + yaffs_find_chunk_in_group(dev, theChunk, tags, in->obj_id, + inode_chunk); /* Delete the entry in the filestructure (if found) */ if (retVal != -1) - yaffs_PutLevel0Tnode(dev, tn, chunkInInode, 0); + yaffs_load_tnode_0(dev, tn, inode_chunk, 0); } return retVal; } -#ifdef YAFFS_PARANOID -static int yaffs_CheckFileSanity(yaffs_Object *in) +int yaffs_put_chunk_in_file(yaffs_obj_t *in, int inode_chunk, + int nand_chunk, int in_scan) { - int chunk; - int nChunks; - int fSize; - int failed = 0; - int objId; - yaffs_Tnode *tn; - yaffs_Tags localTags; - yaffs_Tags *tags = &localTags; - int theChunk; - int chunkDeleted; - - if (in->variantType != YAFFS_OBJECT_TYPE_FILE) - return YAFFS_FAIL; - - objId = in->objectId; - fSize = in->variant.fileVariant.fileSize; - nChunks = - (fSize + in->myDev->nDataBytesPerChunk - 1) / in->myDev->nDataBytesPerChunk; - - for (chunk = 1; chunk <= nChunks; chunk++) { - tn = yaffs_FindLevel0Tnode(in->myDev, &in->variant.fileVariant, - chunk); - - if (tn) { - - theChunk = yaffs_GetChunkGroupBase(dev, tn, chunk); - - if (yaffs_CheckChunkBits - (dev, theChunk / dev->nChunksPerBlock, - theChunk % dev->nChunksPerBlock)) { - - yaffs_ReadChunkTagsFromNAND(in->myDev, theChunk, - tags, - &chunkDeleted); - if (yaffs_TagsMatch - (tags, in->objectId, chunk, chunkDeleted)) { - /* found it; */ - - } - } else { - - failed = 1; - } - - } else { - /* T(("No level 0 found for %d\n", chunk)); */ - } - } - - return failed ? YAFFS_FAIL : YAFFS_OK; -} - -#endif - -static int yaffs_PutChunkIntoFile(yaffs_Object *in, int chunkInInode, - int chunkInNAND, int inScan) -{ - /* NB inScan is zero unless scanning. - * For forward scanning, inScan is > 0; - * for backward scanning inScan is < 0 + /* NB in_scan is zero unless scanning. + * For forward scanning, in_scan is > 0; + * for backward scanning in_scan is < 0 + * + * nand_chunk = 0 is a dummy insert to make sure the tnodes are there. */ - yaffs_Tnode *tn; - yaffs_Device *dev = in->myDev; + yaffs_tnode_t *tn; + yaffs_dev_t *dev = in->my_dev; int existingChunk; - yaffs_ExtendedTags existingTags; - yaffs_ExtendedTags newTags; + yaffs_ext_tags existingTags; + yaffs_ext_tags newTags; unsigned existingSerial, newSerial; - if (in->variantType != YAFFS_OBJECT_TYPE_FILE) { + if (in->variant_type != YAFFS_OBJECT_TYPE_FILE) { /* Just ignore an attempt at putting a chunk into a non-file during scanning * If it is not during Scanning then something went wrong! */ - if (!inScan) { + if (!in_scan) { T(YAFFS_TRACE_ERROR, (TSTR ("yaffs tragedy:attempt to put data chunk into a non-file" @@ -3419,20 +2748,24 @@ static int yaffs_PutChunkIntoFile(yaffs_Object *in, int chunkInInode, YBUG(); } - yaffs_DeleteChunk(dev, chunkInNAND, 1, __LINE__); + yaffs_chunk_del(dev, nand_chunk, 1, __LINE__); return YAFFS_OK; } - tn = yaffs_AddOrFindLevel0Tnode(dev, - &in->variant.fileVariant, - chunkInInode, + tn = yaffs_add_find_tnode_0(dev, + &in->variant.file_variant, + inode_chunk, NULL); if (!tn) return YAFFS_FAIL; + + if(!nand_chunk) + /* Dummy insert, bail now */ + return YAFFS_OK; - existingChunk = yaffs_GetChunkGroupBase(dev, tn, chunkInInode); + existingChunk = yaffs_get_group_base(dev, tn, inode_chunk); - if (inScan != 0) { + if (in_scan != 0) { /* If we're scanning then we need to test for duplicates * NB This does not need to be efficient since it should only ever * happen when the power fails during a write, then only one @@ -3443,7 +2776,7 @@ static int yaffs_PutChunkIntoFile(yaffs_Object *in, int chunkInInode, */ if (existingChunk > 0) { - /* NB Right now existing chunk will not be real chunkId if the device >= 32MB + /* NB Right now existing chunk will not be real chunk_id if the chunk group size > 1 * thus we have to do a FindChunkInFile to get the real chunk id. * * We have a duplicate now we need to decide which one to use: @@ -3453,15 +2786,15 @@ static int yaffs_PutChunkIntoFile(yaffs_Object *in, int chunkInInode, * YAFFS1: Get both sets of tags and compare serial numbers. */ - if (inScan > 0) { + if (in_scan > 0) { /* Only do this for forward scanning */ - yaffs_ReadChunkWithTagsFromNAND(dev, - chunkInNAND, + yaffs_rd_chunk_tags_nand(dev, + nand_chunk, NULL, &newTags); /* Do a proper find */ existingChunk = - yaffs_FindChunkInFile(in, chunkInInode, + yaffs_find_chunk_in_file(in, inode_chunk, &existingTags); } @@ -3479,27 +2812,26 @@ static int yaffs_PutChunkIntoFile(yaffs_Object *in, int chunkInInode, * not be loaded during a scan */ - if (inScan > 0) { - newSerial = newTags.serialNumber; - existingSerial = existingTags.serialNumber; + if (in_scan > 0) { + newSerial = newTags.serial_number; + existingSerial = existingTags.serial_number; } - if ((inScan > 0) && - (in->myDev->isYaffs2 || - existingChunk <= 0 || + if ((in_scan > 0) && + (existingChunk <= 0 || ((existingSerial + 1) & 3) == newSerial)) { /* Forward scanning. * Use new * Delete the old one and drop through to update the tnode */ - yaffs_DeleteChunk(dev, existingChunk, 1, + yaffs_chunk_del(dev, existingChunk, 1, __LINE__); } else { /* Backward scanning or we want to use the existing one * Use existing. * Delete the new one and return early so that the tnode isn't changed */ - yaffs_DeleteChunk(dev, chunkInNAND, 1, + yaffs_chunk_del(dev, nand_chunk, 1, __LINE__); return YAFFS_OK; } @@ -3508,96 +2840,98 @@ static int yaffs_PutChunkIntoFile(yaffs_Object *in, int chunkInInode, } if (existingChunk == 0) - in->nDataChunks++; + in->n_data_chunks++; - yaffs_PutLevel0Tnode(dev, tn, chunkInInode, chunkInNAND); + yaffs_load_tnode_0(dev, tn, inode_chunk, nand_chunk); return YAFFS_OK; } -static int yaffs_ReadChunkDataFromObject(yaffs_Object *in, int chunkInInode, +static int yaffs_rd_data_obj(yaffs_obj_t *in, int inode_chunk, __u8 *buffer) { - int chunkInNAND = yaffs_FindChunkInFile(in, chunkInInode, NULL); + int nand_chunk = yaffs_find_chunk_in_file(in, inode_chunk, NULL); - if (chunkInNAND >= 0) - return yaffs_ReadChunkWithTagsFromNAND(in->myDev, chunkInNAND, + if (nand_chunk >= 0) + return yaffs_rd_chunk_tags_nand(in->my_dev, nand_chunk, buffer, NULL); else { T(YAFFS_TRACE_NANDACCESS, (TSTR("Chunk %d not found zero instead" TENDSTR), - chunkInNAND)); + nand_chunk)); /* get sane (zero) data if you read a hole */ - memset(buffer, 0, in->myDev->nDataBytesPerChunk); + memset(buffer, 0, in->my_dev->data_bytes_per_chunk); return 0; } } -void yaffs_DeleteChunk(yaffs_Device *dev, int chunkId, int markNAND, int lyn) +void yaffs_chunk_del(yaffs_dev_t *dev, int chunk_id, int mark_flash, int lyn) { int block; int page; - yaffs_ExtendedTags tags; - yaffs_BlockInfo *bi; + yaffs_ext_tags tags; + yaffs_block_info_t *bi; - if (chunkId <= 0) + if (chunk_id <= 0) return; - dev->nDeletions++; - block = chunkId / dev->nChunksPerBlock; - page = chunkId % dev->nChunksPerBlock; + dev->n_deletions++; + block = chunk_id / dev->param.chunks_per_block; + page = chunk_id % dev->param.chunks_per_block; - if (!yaffs_CheckChunkBit(dev, block, page)) + if (!yaffs_check_chunk_bit(dev, block, page)) T(YAFFS_TRACE_VERIFY, (TSTR("Deleting invalid chunk %d"TENDSTR), - chunkId)); + chunk_id)); - bi = yaffs_GetBlockInfo(dev, block); + bi = yaffs_get_block_info(dev, block); + + yaffs2_update_oldest_dirty_seq(dev, block, bi); T(YAFFS_TRACE_DELETION, - (TSTR("line %d delete of chunk %d" TENDSTR), lyn, chunkId)); + (TSTR("line %d delete of chunk %d" TENDSTR), lyn, chunk_id)); - if (markNAND && - bi->blockState != YAFFS_BLOCK_STATE_COLLECTING && !dev->isYaffs2) { + if (!dev->param.is_yaffs2 && mark_flash && + bi->block_state != YAFFS_BLOCK_STATE_COLLECTING) { - yaffs_InitialiseTags(&tags); + yaffs_init_tags(&tags); - tags.chunkDeleted = 1; + tags.is_deleted = 1; - yaffs_WriteChunkWithTagsToNAND(dev, chunkId, NULL, &tags); - yaffs_HandleUpdateChunk(dev, chunkId, &tags); + yaffs_wr_chunk_tags_nand(dev, chunk_id, NULL, &tags); + yaffs_handle_chunk_update(dev, chunk_id, &tags); } else { - dev->nUnmarkedDeletions++; + dev->n_unmarked_deletions++; } /* Pull out of the management area. * If the whole block became dirty, this will kick off an erasure. */ - if (bi->blockState == YAFFS_BLOCK_STATE_ALLOCATING || - bi->blockState == YAFFS_BLOCK_STATE_FULL || - bi->blockState == YAFFS_BLOCK_STATE_NEEDS_SCANNING || - bi->blockState == YAFFS_BLOCK_STATE_COLLECTING) { - dev->nFreeChunks++; + if (bi->block_state == YAFFS_BLOCK_STATE_ALLOCATING || + bi->block_state == YAFFS_BLOCK_STATE_FULL || + bi->block_state == YAFFS_BLOCK_STATE_NEEDS_SCANNING || + bi->block_state == YAFFS_BLOCK_STATE_COLLECTING) { + dev->n_free_chunks++; - yaffs_ClearChunkBit(dev, block, page); + yaffs_clear_chunk_bit(dev, block, page); - bi->pagesInUse--; + bi->pages_in_use--; - if (bi->pagesInUse == 0 && - !bi->hasShrinkHeader && - bi->blockState != YAFFS_BLOCK_STATE_ALLOCATING && - bi->blockState != YAFFS_BLOCK_STATE_NEEDS_SCANNING) { - yaffs_BlockBecameDirty(dev, block); + if (bi->pages_in_use == 0 && + !bi->has_shrink_hdr && + bi->block_state != YAFFS_BLOCK_STATE_ALLOCATING && + bi->block_state != YAFFS_BLOCK_STATE_NEEDS_SCANNING) { + yaffs_block_became_dirty(dev, block); } } } -static int yaffs_WriteChunkDataToObject(yaffs_Object *in, int chunkInInode, - const __u8 *buffer, int nBytes, +static int yaffs_wr_data_obj(yaffs_obj_t *in, int inode_chunk, + const __u8 *buffer, int n_bytes, int useReserve) { /* Find old chunk Need to do this to get serial number @@ -3606,44 +2940,51 @@ static int yaffs_WriteChunkDataToObject(yaffs_Object *in, int chunkInInode, */ int prevChunkId; - yaffs_ExtendedTags prevTags; + yaffs_ext_tags prevTags; int newChunkId; - yaffs_ExtendedTags newTags; + yaffs_ext_tags newTags; - yaffs_Device *dev = in->myDev; + yaffs_dev_t *dev = in->my_dev; - yaffs_CheckGarbageCollection(dev); + yaffs_check_gc(dev,0); - /* Get the previous chunk at this location in the file if it exists */ - prevChunkId = yaffs_FindChunkInFile(in, chunkInInode, &prevTags); + /* Get the previous chunk at this location in the file if it exists. + * If it does not exist then put a zero into the tree. This creates + * the tnode now, rather than later when it is harder to clean up. + */ + prevChunkId = yaffs_find_chunk_in_file(in, inode_chunk, &prevTags); + if(prevChunkId < 1 && + !yaffs_put_chunk_in_file(in, inode_chunk, 0, 0)) + return 0; /* Set up new tags */ - yaffs_InitialiseTags(&newTags); + yaffs_init_tags(&newTags); - newTags.chunkId = chunkInInode; - newTags.objectId = in->objectId; - newTags.serialNumber = - (prevChunkId >= 0) ? prevTags.serialNumber + 1 : 1; - newTags.byteCount = nBytes; + newTags.chunk_id = inode_chunk; + newTags.obj_id = in->obj_id; + newTags.serial_number = + (prevChunkId > 0) ? prevTags.serial_number + 1 : 1; + newTags.n_bytes = n_bytes; - if (nBytes < 1 || nBytes > dev->totalBytesPerChunk) { + if (n_bytes < 1 || n_bytes > dev->param.total_bytes_per_chunk) { T(YAFFS_TRACE_ERROR, - (TSTR("Writing %d bytes to chunk!!!!!!!!!" TENDSTR), nBytes)); + (TSTR("Writing %d bytes to chunk!!!!!!!!!" TENDSTR), n_bytes)); YBUG(); } - + + newChunkId = - yaffs_WriteNewChunkWithTagsToNAND(dev, buffer, &newTags, + yaffs_write_new_chunk(dev, buffer, &newTags, useReserve); - if (newChunkId >= 0) { - yaffs_PutChunkIntoFile(in, chunkInInode, newChunkId, 0); + if (newChunkId > 0) { + yaffs_put_chunk_in_file(in, inode_chunk, newChunkId, 0); - if (prevChunkId >= 0) - yaffs_DeleteChunk(dev, prevChunkId, 1, __LINE__); + if (prevChunkId > 0) + yaffs_chunk_del(dev, prevChunkId, 1, __LINE__); - yaffs_CheckFileSanity(in); + yaffs_verify_file_sane(in); } return newChunkId; @@ -3652,56 +2993,57 @@ static int yaffs_WriteChunkDataToObject(yaffs_Object *in, int chunkInInode, /* UpdateObjectHeader updates the header on NAND for an object. * If name is not NULL, then that new name is used. */ -int yaffs_UpdateObjectHeader(yaffs_Object *in, const YCHAR *name, int force, - int isShrink, int shadows) +int yaffs_update_oh(yaffs_obj_t *in, const YCHAR *name, int force, + int is_shrink, int shadows, yaffs_xattr_mod *xmod) { - yaffs_BlockInfo *bi; + yaffs_block_info_t *bi; - yaffs_Device *dev = in->myDev; + yaffs_dev_t *dev = in->my_dev; int prevChunkId; int retVal = 0; int result = 0; int newChunkId; - yaffs_ExtendedTags newTags; - yaffs_ExtendedTags oldTags; + yaffs_ext_tags newTags; + yaffs_ext_tags oldTags; + const YCHAR *alias = NULL; __u8 *buffer = NULL; - YCHAR oldName[YAFFS_MAX_NAME_LENGTH + 1]; + YCHAR old_name[YAFFS_MAX_NAME_LENGTH + 1]; - yaffs_ObjectHeader *oh = NULL; + yaffs_obj_header *oh = NULL; - yaffs_strcpy(oldName, _Y("silly old name")); + yaffs_strcpy(old_name, _Y("silly old name")); if (!in->fake || - in == dev->rootDir || /* The rootDir should also be saved */ - force) { + in == dev->root_dir || /* The root_dir should also be saved */ + force || xmod) { - yaffs_CheckGarbageCollection(dev); - yaffs_CheckObjectDetailsLoaded(in); + yaffs_check_gc(dev,0); + yaffs_check_obj_details_loaded(in); - buffer = yaffs_GetTempBuffer(in->myDev, __LINE__); - oh = (yaffs_ObjectHeader *) buffer; + buffer = yaffs_get_temp_buffer(in->my_dev, __LINE__); + oh = (yaffs_obj_header *) buffer; - prevChunkId = in->hdrChunk; + prevChunkId = in->hdr_chunk; if (prevChunkId > 0) { - result = yaffs_ReadChunkWithTagsFromNAND(dev, prevChunkId, + result = yaffs_rd_chunk_tags_nand(dev, prevChunkId, buffer, &oldTags); - yaffs_VerifyObjectHeader(in, oh, &oldTags, 0); - - memcpy(oldName, oh->name, sizeof(oh->name)); - } + yaffs_verify_oh(in, oh, &oldTags, 0); - memset(buffer, 0xFF, dev->nDataBytesPerChunk); + memcpy(old_name, oh->name, sizeof(oh->name)); + memset(buffer, 0xFF, sizeof(yaffs_obj_header)); + } else + memset(buffer, 0xFF, dev->data_bytes_per_chunk); - oh->type = in->variantType; + oh->type = in->variant_type; oh->yst_mode = in->yst_mode; - oh->shadowsObject = oh->inbandShadowsObject = shadows; + oh->shadows_obj = oh->inband_shadowed_obj_id = shadows; #ifdef CONFIG_YAFFS_WINCE oh->win_atime[0] = in->win_atime[0]; @@ -3719,34 +3061,34 @@ int yaffs_UpdateObjectHeader(yaffs_Object *in, const YCHAR *name, int force, oh->yst_rdev = in->yst_rdev; #endif if (in->parent) - oh->parentObjectId = in->parent->objectId; + oh->parent_obj_id = in->parent->obj_id; else - oh->parentObjectId = 0; + oh->parent_obj_id = 0; if (name && *name) { memset(oh->name, 0, sizeof(oh->name)); - yaffs_strncpy(oh->name, name, YAFFS_MAX_NAME_LENGTH); - } else if (prevChunkId >= 0) - memcpy(oh->name, oldName, sizeof(oh->name)); + yaffs_load_oh_from_name(dev,oh->name,name); + } else if (prevChunkId > 0) + memcpy(oh->name, old_name, sizeof(oh->name)); else memset(oh->name, 0, sizeof(oh->name)); - oh->isShrink = isShrink; + oh->is_shrink = is_shrink; - switch (in->variantType) { + switch (in->variant_type) { case YAFFS_OBJECT_TYPE_UNKNOWN: /* Should not happen */ break; case YAFFS_OBJECT_TYPE_FILE: - oh->fileSize = - (oh->parentObjectId == YAFFS_OBJECTID_DELETED - || oh->parentObjectId == + oh->file_size = + (oh->parent_obj_id == YAFFS_OBJECTID_DELETED + || oh->parent_obj_id == YAFFS_OBJECTID_UNLINKED) ? 0 : in->variant. - fileVariant.fileSize; + file_variant.file_size; break; case YAFFS_OBJECT_TYPE_HARDLINK: - oh->equivalentObjectId = - in->variant.hardLinkVariant.equivalentObjectId; + oh->equiv_id = + in->variant.hardlink_variant.equiv_id; break; case YAFFS_OBJECT_TYPE_SPECIAL: /* Do nothing */ @@ -3755,54 +3097,62 @@ int yaffs_UpdateObjectHeader(yaffs_Object *in, const YCHAR *name, int force, /* Do nothing */ break; case YAFFS_OBJECT_TYPE_SYMLINK: + alias = in->variant.symlink_variant.alias; + if(!alias) + alias = _Y("no alias"); yaffs_strncpy(oh->alias, - in->variant.symLinkVariant.alias, + alias, YAFFS_MAX_ALIAS_LENGTH); oh->alias[YAFFS_MAX_ALIAS_LENGTH] = 0; break; } + /* process any xattrib modifications */ + if(xmod) + yaffs_apply_xattrib_mod(in, (char *)buffer, xmod); + + /* Tags */ - yaffs_InitialiseTags(&newTags); + yaffs_init_tags(&newTags); in->serial++; - newTags.chunkId = 0; - newTags.objectId = in->objectId; - newTags.serialNumber = in->serial; + newTags.chunk_id = 0; + newTags.obj_id = in->obj_id; + newTags.serial_number = in->serial; /* Add extra info for file header */ - newTags.extraHeaderInfoAvailable = 1; - newTags.extraParentObjectId = oh->parentObjectId; - newTags.extraFileLength = oh->fileSize; - newTags.extraIsShrinkHeader = oh->isShrink; - newTags.extraEquivalentObjectId = oh->equivalentObjectId; - newTags.extraShadows = (oh->shadowsObject > 0) ? 1 : 0; - newTags.extraObjectType = in->variantType; + newTags.extra_available = 1; + newTags.extra_parent_id = oh->parent_obj_id; + newTags.extra_length = oh->file_size; + newTags.extra_is_shrink = oh->is_shrink; + newTags.extra_equiv_id = oh->equiv_id; + newTags.extra_shadows = (oh->shadows_obj > 0) ? 1 : 0; + newTags.extra_obj_type = in->variant_type; - yaffs_VerifyObjectHeader(in, oh, &newTags, 1); + yaffs_verify_oh(in, oh, &newTags, 1); /* Create new chunk in NAND */ newChunkId = - yaffs_WriteNewChunkWithTagsToNAND(dev, buffer, &newTags, - (prevChunkId >= 0) ? 1 : 0); + yaffs_write_new_chunk(dev, buffer, &newTags, + (prevChunkId > 0) ? 1 : 0); if (newChunkId >= 0) { - in->hdrChunk = newChunkId; + in->hdr_chunk = newChunkId; - if (prevChunkId >= 0) { - yaffs_DeleteChunk(dev, prevChunkId, 1, + if (prevChunkId > 0) { + yaffs_chunk_del(dev, prevChunkId, 1, __LINE__); } - if (!yaffs_ObjectHasCachedWriteData(in)) + if (!yaffs_obj_cache_dirty(in)) in->dirty = 0; /* If this was a shrink, then mark the block that the chunk lives on */ - if (isShrink) { - bi = yaffs_GetBlockInfo(in->myDev, - newChunkId / in->myDev->nChunksPerBlock); - bi->hasShrinkHeader = 1; + if (is_shrink) { + bi = yaffs_get_block_info(in->my_dev, + newChunkId / in->my_dev->param.chunks_per_block); + bi->has_shrink_hdr = 1; } } @@ -3812,7 +3162,7 @@ int yaffs_UpdateObjectHeader(yaffs_Object *in, const YCHAR *name, int force, } if (buffer) - yaffs_ReleaseTempBuffer(dev, buffer, __LINE__); + yaffs_release_temp_buffer(dev, buffer, __LINE__); return retVal; } @@ -3830,15 +3180,15 @@ int yaffs_UpdateObjectHeader(yaffs_Object *in, const YCHAR *name, int force, * need a very intelligent search. */ -static int yaffs_ObjectHasCachedWriteData(yaffs_Object *obj) +static int yaffs_obj_cache_dirty(yaffs_obj_t *obj) { - yaffs_Device *dev = obj->myDev; + yaffs_dev_t *dev = obj->my_dev; int i; - yaffs_ChunkCache *cache; - int nCaches = obj->myDev->nShortOpCaches; + yaffs_cache_t *cache; + int nCaches = obj->my_dev->param.n_caches; for (i = 0; i < nCaches; i++) { - cache = &dev->srCache[i]; + cache = &dev->cache[i]; if (cache->object == obj && cache->dirty) return 1; @@ -3848,14 +3198,14 @@ static int yaffs_ObjectHasCachedWriteData(yaffs_Object *obj) } -static void yaffs_FlushFilesChunkCache(yaffs_Object *obj) +static void yaffs_flush_file_cache(yaffs_obj_t *obj) { - yaffs_Device *dev = obj->myDev; + yaffs_dev_t *dev = obj->my_dev; int lowest = -99; /* Stop compiler whining. */ int i; - yaffs_ChunkCache *cache; + yaffs_cache_t *cache; int chunkWritten = 0; - int nCaches = obj->myDev->nShortOpCaches; + int nCaches = obj->my_dev->param.n_caches; if (nCaches > 0) { do { @@ -3863,13 +3213,13 @@ static void yaffs_FlushFilesChunkCache(yaffs_Object *obj) /* Find the dirty cache for this object with the lowest chunk id. */ for (i = 0; i < nCaches; i++) { - if (dev->srCache[i].object == obj && - dev->srCache[i].dirty) { + if (dev->cache[i].object == obj && + dev->cache[i].dirty) { if (!cache - || dev->srCache[i].chunkId < + || dev->cache[i].chunk_id < lowest) { - cache = &dev->srCache[i]; - lowest = cache->chunkId; + cache = &dev->cache[i]; + lowest = cache->chunk_id; } } } @@ -3878,10 +3228,10 @@ static void yaffs_FlushFilesChunkCache(yaffs_Object *obj) /* Write it out and free it up */ chunkWritten = - yaffs_WriteChunkDataToObject(cache->object, - cache->chunkId, + yaffs_wr_data_obj(cache->object, + cache->chunk_id, cache->data, - cache->nBytes, + cache->n_bytes, 1); cache->dirty = 0; cache->object = NULL; @@ -3899,15 +3249,15 @@ static void yaffs_FlushFilesChunkCache(yaffs_Object *obj) } -/*yaffs_FlushEntireDeviceCache(dev) +/*yaffs_flush_whole_cache(dev) * * */ -void yaffs_FlushEntireDeviceCache(yaffs_Device *dev) +void yaffs_flush_whole_cache(yaffs_dev_t *dev) { - yaffs_Object *obj; - int nCaches = dev->nShortOpCaches; + yaffs_obj_t *obj; + int nCaches = dev->param.n_caches; int i; /* Find a dirty object in the cache and flush it... @@ -3916,13 +3266,13 @@ void yaffs_FlushEntireDeviceCache(yaffs_Device *dev) do { obj = NULL; for (i = 0; i < nCaches && !obj; i++) { - if (dev->srCache[i].object && - dev->srCache[i].dirty) - obj = dev->srCache[i].object; + if (dev->cache[i].object && + dev->cache[i].dirty) + obj = dev->cache[i].object; } if (obj) - yaffs_FlushFilesChunkCache(obj); + yaffs_flush_file_cache(obj); } while (obj); @@ -3934,32 +3284,32 @@ void yaffs_FlushEntireDeviceCache(yaffs_Device *dev) * Then look for the least recently used non-dirty one. * Then look for the least recently used dirty one...., flush and look again. */ -static yaffs_ChunkCache *yaffs_GrabChunkCacheWorker(yaffs_Device *dev) +static yaffs_cache_t *yaffs_grab_chunk_worker(yaffs_dev_t *dev) { int i; - if (dev->nShortOpCaches > 0) { - for (i = 0; i < dev->nShortOpCaches; i++) { - if (!dev->srCache[i].object) - return &dev->srCache[i]; + if (dev->param.n_caches > 0) { + for (i = 0; i < dev->param.n_caches; i++) { + if (!dev->cache[i].object) + return &dev->cache[i]; } } return NULL; } -static yaffs_ChunkCache *yaffs_GrabChunkCache(yaffs_Device *dev) +static yaffs_cache_t *yaffs_grab_chunk_cache(yaffs_dev_t *dev) { - yaffs_ChunkCache *cache; - yaffs_Object *theObj; + yaffs_cache_t *cache; + yaffs_obj_t *theObj; int usage; int i; int pushout; - if (dev->nShortOpCaches > 0) { + if (dev->param.n_caches > 0) { /* Try find a non-dirty one... */ - cache = yaffs_GrabChunkCacheWorker(dev); + cache = yaffs_grab_chunk_worker(dev); if (!cache) { /* They were all dirty, find the last recently used object and flush @@ -3975,21 +3325,21 @@ static yaffs_ChunkCache *yaffs_GrabChunkCache(yaffs_Device *dev) cache = NULL; pushout = -1; - for (i = 0; i < dev->nShortOpCaches; i++) { - if (dev->srCache[i].object && - !dev->srCache[i].locked && - (dev->srCache[i].lastUse < usage || !cache)) { - usage = dev->srCache[i].lastUse; - theObj = dev->srCache[i].object; - cache = &dev->srCache[i]; + for (i = 0; i < dev->param.n_caches; i++) { + if (dev->cache[i].object && + !dev->cache[i].locked && + (dev->cache[i].last_use < usage || !cache)) { + usage = dev->cache[i].last_use; + theObj = dev->cache[i].object; + cache = &dev->cache[i]; pushout = i; } } if (!cache || cache->dirty) { /* Flush and try again */ - yaffs_FlushFilesChunkCache(theObj); - cache = yaffs_GrabChunkCacheWorker(dev); + yaffs_flush_file_cache(theObj); + cache = yaffs_grab_chunk_worker(dev); } } @@ -4000,18 +3350,18 @@ static yaffs_ChunkCache *yaffs_GrabChunkCache(yaffs_Device *dev) } /* Find a cached chunk */ -static yaffs_ChunkCache *yaffs_FindChunkCache(const yaffs_Object *obj, - int chunkId) +static yaffs_cache_t *yaffs_find_chunk_cache(const yaffs_obj_t *obj, + int chunk_id) { - yaffs_Device *dev = obj->myDev; + yaffs_dev_t *dev = obj->my_dev; int i; - if (dev->nShortOpCaches > 0) { - for (i = 0; i < dev->nShortOpCaches; i++) { - if (dev->srCache[i].object == obj && - dev->srCache[i].chunkId == chunkId) { - dev->cacheHits++; + if (dev->param.n_caches > 0) { + for (i = 0; i < dev->param.n_caches; i++) { + if (dev->cache[i].object == obj && + dev->cache[i].chunk_id == chunk_id) { + dev->cache_hits++; - return &dev->srCache[i]; + return &dev->cache[i]; } } } @@ -4019,23 +3369,23 @@ static yaffs_ChunkCache *yaffs_FindChunkCache(const yaffs_Object *obj, } /* Mark the chunk for the least recently used algorithym */ -static void yaffs_UseChunkCache(yaffs_Device *dev, yaffs_ChunkCache *cache, +static void yaffs_use_cache(yaffs_dev_t *dev, yaffs_cache_t *cache, int isAWrite) { - if (dev->nShortOpCaches > 0) { - if (dev->srLastUse < 0 || dev->srLastUse > 100000000) { + if (dev->param.n_caches > 0) { + if (dev->cache_last_use < 0 || dev->cache_last_use > 100000000) { /* Reset the cache usages */ int i; - for (i = 1; i < dev->nShortOpCaches; i++) - dev->srCache[i].lastUse = 0; + for (i = 1; i < dev->param.n_caches; i++) + dev->cache[i].last_use = 0; - dev->srLastUse = 0; + dev->cache_last_use = 0; } - dev->srLastUse++; + dev->cache_last_use++; - cache->lastUse = dev->srLastUse; + cache->last_use = dev->cache_last_use; if (isAWrite) cache->dirty = 1; @@ -4046,10 +3396,10 @@ static void yaffs_UseChunkCache(yaffs_Device *dev, yaffs_ChunkCache *cache, * Do this when a whole page gets written, * ie the short cache for this page is no longer valid. */ -static void yaffs_InvalidateChunkCache(yaffs_Object *object, int chunkId) +static void yaffs_invalidate_chunk_cache(yaffs_obj_t *object, int chunk_id) { - if (object->myDev->nShortOpCaches > 0) { - yaffs_ChunkCache *cache = yaffs_FindChunkCache(object, chunkId); + if (object->my_dev->param.n_caches > 0) { + yaffs_cache_t *cache = yaffs_find_chunk_cache(object, chunk_id); if (cache) cache->object = NULL; @@ -4059,586 +3409,21 @@ static void yaffs_InvalidateChunkCache(yaffs_Object *object, int chunkId) /* Invalidate all the cache pages associated with this object * Do this whenever ther file is deleted or resized. */ -static void yaffs_InvalidateWholeChunkCache(yaffs_Object *in) +static void yaffs_invalidate_whole_cache(yaffs_obj_t *in) { int i; - yaffs_Device *dev = in->myDev; + yaffs_dev_t *dev = in->my_dev; - if (dev->nShortOpCaches > 0) { + if (dev->param.n_caches > 0) { /* Invalidate it. */ - for (i = 0; i < dev->nShortOpCaches; i++) { - if (dev->srCache[i].object == in) - dev->srCache[i].object = NULL; - } - } -} - -/*--------------------- Checkpointing --------------------*/ - - -static int yaffs_WriteCheckpointValidityMarker(yaffs_Device *dev, int head) -{ - yaffs_CheckpointValidity cp; - - memset(&cp, 0, sizeof(cp)); - - cp.structType = sizeof(cp); - cp.magic = YAFFS_MAGIC; - cp.version = YAFFS_CHECKPOINT_VERSION; - cp.head = (head) ? 1 : 0; - - return (yaffs_CheckpointWrite(dev, &cp, sizeof(cp)) == sizeof(cp)) ? - 1 : 0; -} - -static int yaffs_ReadCheckpointValidityMarker(yaffs_Device *dev, int head) -{ - yaffs_CheckpointValidity cp; - int ok; - - ok = (yaffs_CheckpointRead(dev, &cp, sizeof(cp)) == sizeof(cp)); - - if (ok) - ok = (cp.structType == sizeof(cp)) && - (cp.magic == YAFFS_MAGIC) && - (cp.version == YAFFS_CHECKPOINT_VERSION) && - (cp.head == ((head) ? 1 : 0)); - return ok ? 1 : 0; -} - -static void yaffs_DeviceToCheckpointDevice(yaffs_CheckpointDevice *cp, - yaffs_Device *dev) -{ - cp->nErasedBlocks = dev->nErasedBlocks; - cp->allocationBlock = dev->allocationBlock; - cp->allocationPage = dev->allocationPage; - cp->nFreeChunks = dev->nFreeChunks; - - cp->nDeletedFiles = dev->nDeletedFiles; - cp->nUnlinkedFiles = dev->nUnlinkedFiles; - cp->nBackgroundDeletions = dev->nBackgroundDeletions; - cp->sequenceNumber = dev->sequenceNumber; - cp->oldestDirtySequence = dev->oldestDirtySequence; - -} - -static void yaffs_CheckpointDeviceToDevice(yaffs_Device *dev, - yaffs_CheckpointDevice *cp) -{ - dev->nErasedBlocks = cp->nErasedBlocks; - dev->allocationBlock = cp->allocationBlock; - dev->allocationPage = cp->allocationPage; - dev->nFreeChunks = cp->nFreeChunks; - - dev->nDeletedFiles = cp->nDeletedFiles; - dev->nUnlinkedFiles = cp->nUnlinkedFiles; - dev->nBackgroundDeletions = cp->nBackgroundDeletions; - dev->sequenceNumber = cp->sequenceNumber; - dev->oldestDirtySequence = cp->oldestDirtySequence; -} - - -static int yaffs_WriteCheckpointDevice(yaffs_Device *dev) -{ - yaffs_CheckpointDevice cp; - __u32 nBytes; - __u32 nBlocks = (dev->internalEndBlock - dev->internalStartBlock + 1); - - int ok; - - /* Write device runtime values*/ - yaffs_DeviceToCheckpointDevice(&cp, dev); - cp.structType = sizeof(cp); - - ok = (yaffs_CheckpointWrite(dev, &cp, sizeof(cp)) == sizeof(cp)); - - /* Write block info */ - if (ok) { - nBytes = nBlocks * sizeof(yaffs_BlockInfo); - ok = (yaffs_CheckpointWrite(dev, dev->blockInfo, nBytes) == nBytes); - } - - /* Write chunk bits */ - if (ok) { - nBytes = nBlocks * dev->chunkBitmapStride; - ok = (yaffs_CheckpointWrite(dev, dev->chunkBits, nBytes) == nBytes); - } - return ok ? 1 : 0; - -} - -static int yaffs_ReadCheckpointDevice(yaffs_Device *dev) -{ - yaffs_CheckpointDevice cp; - __u32 nBytes; - __u32 nBlocks = (dev->internalEndBlock - dev->internalStartBlock + 1); - - int ok; - - ok = (yaffs_CheckpointRead(dev, &cp, sizeof(cp)) == sizeof(cp)); - if (!ok) - return 0; - - if (cp.structType != sizeof(cp)) - return 0; - - - yaffs_CheckpointDeviceToDevice(dev, &cp); - - nBytes = nBlocks * sizeof(yaffs_BlockInfo); - - ok = (yaffs_CheckpointRead(dev, dev->blockInfo, nBytes) == nBytes); - - if (!ok) - return 0; - nBytes = nBlocks * dev->chunkBitmapStride; - - ok = (yaffs_CheckpointRead(dev, dev->chunkBits, nBytes) == nBytes); - - return ok ? 1 : 0; -} - -static void yaffs_ObjectToCheckpointObject(yaffs_CheckpointObject *cp, - yaffs_Object *obj) -{ - - cp->objectId = obj->objectId; - cp->parentId = (obj->parent) ? obj->parent->objectId : 0; - cp->hdrChunk = obj->hdrChunk; - cp->variantType = obj->variantType; - cp->deleted = obj->deleted; - cp->softDeleted = obj->softDeleted; - cp->unlinked = obj->unlinked; - cp->fake = obj->fake; - cp->renameAllowed = obj->renameAllowed; - cp->unlinkAllowed = obj->unlinkAllowed; - cp->serial = obj->serial; - cp->nDataChunks = obj->nDataChunks; - - if (obj->variantType == YAFFS_OBJECT_TYPE_FILE) - cp->fileSizeOrEquivalentObjectId = obj->variant.fileVariant.fileSize; - else if (obj->variantType == YAFFS_OBJECT_TYPE_HARDLINK) - cp->fileSizeOrEquivalentObjectId = obj->variant.hardLinkVariant.equivalentObjectId; -} - -static int yaffs_CheckpointObjectToObject(yaffs_Object *obj, yaffs_CheckpointObject *cp) -{ - - yaffs_Object *parent; - - if (obj->variantType != cp->variantType) { - T(YAFFS_TRACE_ERROR, (TSTR("Checkpoint read object %d type %d " - TCONT("chunk %d does not match existing object type %d") - TENDSTR), cp->objectId, cp->variantType, cp->hdrChunk, - obj->variantType)); - return 0; - } - - obj->objectId = cp->objectId; - - if (cp->parentId) - parent = yaffs_FindOrCreateObjectByNumber( - obj->myDev, - cp->parentId, - YAFFS_OBJECT_TYPE_DIRECTORY); - else - parent = NULL; - - if (parent) { - if (parent->variantType != YAFFS_OBJECT_TYPE_DIRECTORY) { - T(YAFFS_TRACE_ALWAYS, (TSTR("Checkpoint read object %d parent %d type %d" - TCONT(" chunk %d Parent type, %d, not directory") - TENDSTR), - cp->objectId, cp->parentId, cp->variantType, - cp->hdrChunk, parent->variantType)); - return 0; - } - yaffs_AddObjectToDirectory(parent, obj); - } - - obj->hdrChunk = cp->hdrChunk; - obj->variantType = cp->variantType; - obj->deleted = cp->deleted; - obj->softDeleted = cp->softDeleted; - obj->unlinked = cp->unlinked; - obj->fake = cp->fake; - obj->renameAllowed = cp->renameAllowed; - obj->unlinkAllowed = cp->unlinkAllowed; - obj->serial = cp->serial; - obj->nDataChunks = cp->nDataChunks; - - if (obj->variantType == YAFFS_OBJECT_TYPE_FILE) - obj->variant.fileVariant.fileSize = cp->fileSizeOrEquivalentObjectId; - else if (obj->variantType == YAFFS_OBJECT_TYPE_HARDLINK) - obj->variant.hardLinkVariant.equivalentObjectId = cp->fileSizeOrEquivalentObjectId; - - if (obj->hdrChunk > 0) - obj->lazyLoaded = 1; - return 1; -} - - - -static int yaffs_CheckpointTnodeWorker(yaffs_Object *in, yaffs_Tnode *tn, - __u32 level, int chunkOffset) -{ - int i; - yaffs_Device *dev = in->myDev; - int ok = 1; - int tnodeSize = (dev->tnodeWidth * YAFFS_NTNODES_LEVEL0)/8; - - if (tnodeSize < sizeof(yaffs_Tnode)) - tnodeSize = sizeof(yaffs_Tnode); - - - if (tn) { - if (level > 0) { - - for (i = 0; i < YAFFS_NTNODES_INTERNAL && ok; i++) { - if (tn->internal[i]) { - ok = yaffs_CheckpointTnodeWorker(in, - tn->internal[i], - level - 1, - (chunkOffset<<YAFFS_TNODES_INTERNAL_BITS) + i); - } - } - } else if (level == 0) { - __u32 baseOffset = chunkOffset << YAFFS_TNODES_LEVEL0_BITS; - ok = (yaffs_CheckpointWrite(dev, &baseOffset, sizeof(baseOffset)) == sizeof(baseOffset)); - if (ok) - ok = (yaffs_CheckpointWrite(dev, tn, tnodeSize) == tnodeSize); - } - } - - return ok; - -} - -static int yaffs_WriteCheckpointTnodes(yaffs_Object *obj) -{ - __u32 endMarker = ~0; - int ok = 1; - - if (obj->variantType == YAFFS_OBJECT_TYPE_FILE) { - ok = yaffs_CheckpointTnodeWorker(obj, - obj->variant.fileVariant.top, - obj->variant.fileVariant.topLevel, - 0); - if (ok) - ok = (yaffs_CheckpointWrite(obj->myDev, &endMarker, sizeof(endMarker)) == - sizeof(endMarker)); - } - - return ok ? 1 : 0; -} - -static int yaffs_ReadCheckpointTnodes(yaffs_Object *obj) -{ - __u32 baseChunk; - int ok = 1; - yaffs_Device *dev = obj->myDev; - yaffs_FileStructure *fileStructPtr = &obj->variant.fileVariant; - yaffs_Tnode *tn; - int nread = 0; - int tnodeSize = (dev->tnodeWidth * YAFFS_NTNODES_LEVEL0)/8; - - if (tnodeSize < sizeof(yaffs_Tnode)) - tnodeSize = sizeof(yaffs_Tnode); - - ok = (yaffs_CheckpointRead(dev, &baseChunk, sizeof(baseChunk)) == sizeof(baseChunk)); - - while (ok && (~baseChunk)) { - nread++; - /* Read level 0 tnode */ - - - tn = yaffs_GetTnodeRaw(dev); - if (tn) - ok = (yaffs_CheckpointRead(dev, tn, tnodeSize) == tnodeSize); - else - ok = 0; - - if (tn && ok) - ok = yaffs_AddOrFindLevel0Tnode(dev, - fileStructPtr, - baseChunk, - tn) ? 1 : 0; - - if (ok) - ok = (yaffs_CheckpointRead(dev, &baseChunk, sizeof(baseChunk)) == sizeof(baseChunk)); - - } - - T(YAFFS_TRACE_CHECKPOINT, ( - TSTR("Checkpoint read tnodes %d records, last %d. ok %d" TENDSTR), - nread, baseChunk, ok)); - - return ok ? 1 : 0; -} - - -static int yaffs_WriteCheckpointObjects(yaffs_Device *dev) -{ - yaffs_Object *obj; - yaffs_CheckpointObject cp; - int i; - int ok = 1; - struct ylist_head *lh; - - - /* Iterate through the objects in each hash entry, - * dumping them to the checkpointing stream. - */ - - for (i = 0; ok && i < YAFFS_NOBJECT_BUCKETS; i++) { - ylist_for_each(lh, &dev->objectBucket[i].list) { - if (lh) { - obj = ylist_entry(lh, yaffs_Object, hashLink); - if (!obj->deferedFree) { - yaffs_ObjectToCheckpointObject(&cp, obj); - cp.structType = sizeof(cp); - - T(YAFFS_TRACE_CHECKPOINT, ( - TSTR("Checkpoint write object %d parent %d type %d chunk %d obj addr %x" TENDSTR), - cp.objectId, cp.parentId, cp.variantType, cp.hdrChunk, (unsigned) obj)); - - ok = (yaffs_CheckpointWrite(dev, &cp, sizeof(cp)) == sizeof(cp)); - - if (ok && obj->variantType == YAFFS_OBJECT_TYPE_FILE) - ok = yaffs_WriteCheckpointTnodes(obj); - } - } - } - } - - /* Dump end of list */ - memset(&cp, 0xFF, sizeof(yaffs_CheckpointObject)); - cp.structType = sizeof(cp); - - if (ok) - ok = (yaffs_CheckpointWrite(dev, &cp, sizeof(cp)) == sizeof(cp)); - - return ok ? 1 : 0; -} - -static int yaffs_ReadCheckpointObjects(yaffs_Device *dev) -{ - yaffs_Object *obj; - yaffs_CheckpointObject cp; - int ok = 1; - int done = 0; - yaffs_Object *hardList = NULL; - - while (ok && !done) { - ok = (yaffs_CheckpointRead(dev, &cp, sizeof(cp)) == sizeof(cp)); - if (cp.structType != sizeof(cp)) { - T(YAFFS_TRACE_CHECKPOINT, (TSTR("struct size %d instead of %d ok %d"TENDSTR), - cp.structType, sizeof(cp), ok)); - ok = 0; - } - - T(YAFFS_TRACE_CHECKPOINT, (TSTR("Checkpoint read object %d parent %d type %d chunk %d " TENDSTR), - cp.objectId, cp.parentId, cp.variantType, cp.hdrChunk)); - - if (ok && cp.objectId == ~0) - done = 1; - else if (ok) { - obj = yaffs_FindOrCreateObjectByNumber(dev, cp.objectId, cp.variantType); - if (obj) { - ok = yaffs_CheckpointObjectToObject(obj, &cp); - if (!ok) - break; - if (obj->variantType == YAFFS_OBJECT_TYPE_FILE) { - ok = yaffs_ReadCheckpointTnodes(obj); - } else if (obj->variantType == YAFFS_OBJECT_TYPE_HARDLINK) { - obj->hardLinks.next = - (struct ylist_head *) hardList; - hardList = obj; - } - } else - ok = 0; + for (i = 0; i < dev->param.n_caches; i++) { + if (dev->cache[i].object == in) + dev->cache[i].object = NULL; } } - - if (ok) - yaffs_HardlinkFixup(dev, hardList); - - return ok ? 1 : 0; -} - -static int yaffs_WriteCheckpointSum(yaffs_Device *dev) -{ - __u32 checkpointSum; - int ok; - - yaffs_GetCheckpointSum(dev, &checkpointSum); - - ok = (yaffs_CheckpointWrite(dev, &checkpointSum, sizeof(checkpointSum)) == sizeof(checkpointSum)); - - if (!ok) - return 0; - - return 1; -} - -static int yaffs_ReadCheckpointSum(yaffs_Device *dev) -{ - __u32 checkpointSum0; - __u32 checkpointSum1; - int ok; - - yaffs_GetCheckpointSum(dev, &checkpointSum0); - - ok = (yaffs_CheckpointRead(dev, &checkpointSum1, sizeof(checkpointSum1)) == sizeof(checkpointSum1)); - - if (!ok) - return 0; - - if (checkpointSum0 != checkpointSum1) - return 0; - - return 1; } -static int yaffs_WriteCheckpointData(yaffs_Device *dev) -{ - int ok = 1; - - if (dev->skipCheckpointWrite || !dev->isYaffs2) { - T(YAFFS_TRACE_CHECKPOINT, (TSTR("skipping checkpoint write" TENDSTR))); - ok = 0; - } - - if (ok) - ok = yaffs_CheckpointOpen(dev, 1); - - if (ok) { - T(YAFFS_TRACE_CHECKPOINT, (TSTR("write checkpoint validity" TENDSTR))); - ok = yaffs_WriteCheckpointValidityMarker(dev, 1); - } - if (ok) { - T(YAFFS_TRACE_CHECKPOINT, (TSTR("write checkpoint device" TENDSTR))); - ok = yaffs_WriteCheckpointDevice(dev); - } - if (ok) { - T(YAFFS_TRACE_CHECKPOINT, (TSTR("write checkpoint objects" TENDSTR))); - ok = yaffs_WriteCheckpointObjects(dev); - } - if (ok) { - T(YAFFS_TRACE_CHECKPOINT, (TSTR("write checkpoint validity" TENDSTR))); - ok = yaffs_WriteCheckpointValidityMarker(dev, 0); - } - - if (ok) - ok = yaffs_WriteCheckpointSum(dev); - - if (!yaffs_CheckpointClose(dev)) - ok = 0; - - if (ok) - dev->isCheckpointed = 1; - else - dev->isCheckpointed = 0; - - return dev->isCheckpointed; -} - -static int yaffs_ReadCheckpointData(yaffs_Device *dev) -{ - int ok = 1; - - if (dev->skipCheckpointRead || !dev->isYaffs2) { - T(YAFFS_TRACE_CHECKPOINT, (TSTR("skipping checkpoint read" TENDSTR))); - ok = 0; - } - - if (ok) - ok = yaffs_CheckpointOpen(dev, 0); /* open for read */ - - if (ok) { - T(YAFFS_TRACE_CHECKPOINT, (TSTR("read checkpoint validity" TENDSTR))); - ok = yaffs_ReadCheckpointValidityMarker(dev, 1); - } - if (ok) { - T(YAFFS_TRACE_CHECKPOINT, (TSTR("read checkpoint device" TENDSTR))); - ok = yaffs_ReadCheckpointDevice(dev); - } - if (ok) { - T(YAFFS_TRACE_CHECKPOINT, (TSTR("read checkpoint objects" TENDSTR))); - ok = yaffs_ReadCheckpointObjects(dev); - } - if (ok) { - T(YAFFS_TRACE_CHECKPOINT, (TSTR("read checkpoint validity" TENDSTR))); - ok = yaffs_ReadCheckpointValidityMarker(dev, 0); - } - - if (ok) { - ok = yaffs_ReadCheckpointSum(dev); - T(YAFFS_TRACE_CHECKPOINT, (TSTR("read checkpoint checksum %d" TENDSTR), ok)); - } - - if (!yaffs_CheckpointClose(dev)) - ok = 0; - - if (ok) - dev->isCheckpointed = 1; - else - dev->isCheckpointed = 0; - - return ok ? 1 : 0; - -} - -static void yaffs_InvalidateCheckpoint(yaffs_Device *dev) -{ - if (dev->isCheckpointed || - dev->blocksInCheckpoint > 0) { - dev->isCheckpointed = 0; - yaffs_CheckpointInvalidateStream(dev); - if (dev->superBlock && dev->markSuperBlockDirty) - dev->markSuperBlockDirty(dev->superBlock); - } -} - - -int yaffs_CheckpointSave(yaffs_Device *dev) -{ - - T(YAFFS_TRACE_CHECKPOINT, (TSTR("save entry: isCheckpointed %d"TENDSTR), dev->isCheckpointed)); - - yaffs_VerifyObjects(dev); - yaffs_VerifyBlocks(dev); - yaffs_VerifyFreeChunks(dev); - - if (!dev->isCheckpointed) { - yaffs_InvalidateCheckpoint(dev); - yaffs_WriteCheckpointData(dev); - } - - T(YAFFS_TRACE_ALWAYS, (TSTR("save exit: isCheckpointed %d"TENDSTR), dev->isCheckpointed)); - - return dev->isCheckpointed; -} - -int yaffs_CheckpointRestore(yaffs_Device *dev) -{ - int retval; - T(YAFFS_TRACE_CHECKPOINT, (TSTR("restore entry: isCheckpointed %d"TENDSTR), dev->isCheckpointed)); - - retval = yaffs_ReadCheckpointData(dev); - - if (dev->isCheckpointed) { - yaffs_VerifyObjects(dev); - yaffs_VerifyBlocks(dev); - yaffs_VerifyFreeChunks(dev); - } - - T(YAFFS_TRACE_CHECKPOINT, (TSTR("restore exit: isCheckpointed %d"TENDSTR), dev->isCheckpointed)); - - return retval; -} - /*--------------------- File read/write ------------------------ * Read and write have very similar structures. * In general the read/write has three parts to it @@ -4649,59 +3434,59 @@ int yaffs_CheckpointRestore(yaffs_Device *dev) * Curve-balls: the first chunk might also be the last chunk. */ -int yaffs_ReadDataFromFile(yaffs_Object *in, __u8 *buffer, loff_t offset, - int nBytes) +int yaffs_file_rd(yaffs_obj_t *in, __u8 *buffer, loff_t offset, + int n_bytes) { int chunk; __u32 start; int nToCopy; - int n = nBytes; + int n = n_bytes; int nDone = 0; - yaffs_ChunkCache *cache; + yaffs_cache_t *cache; - yaffs_Device *dev; + yaffs_dev_t *dev; - dev = in->myDev; + dev = in->my_dev; while (n > 0) { - /* chunk = offset / dev->nDataBytesPerChunk + 1; */ - /* start = offset % dev->nDataBytesPerChunk; */ - yaffs_AddrToChunk(dev, offset, &chunk, &start); + /* chunk = offset / dev->data_bytes_per_chunk + 1; */ + /* start = offset % dev->data_bytes_per_chunk; */ + yaffs_addr_to_chunk(dev, offset, &chunk, &start); chunk++; /* OK now check for the curveball where the start and end are in * the same chunk. */ - if ((start + n) < dev->nDataBytesPerChunk) + if ((start + n) < dev->data_bytes_per_chunk) nToCopy = n; else - nToCopy = dev->nDataBytesPerChunk - start; + nToCopy = dev->data_bytes_per_chunk - start; - cache = yaffs_FindChunkCache(in, chunk); + cache = yaffs_find_chunk_cache(in, chunk); /* If the chunk is already in the cache or it is less than a whole chunk * or we're using inband tags then use the cache (if there is caching) * else bypass the cache. */ - if (cache || nToCopy != dev->nDataBytesPerChunk || dev->inbandTags) { - if (dev->nShortOpCaches > 0) { + if (cache || nToCopy != dev->data_bytes_per_chunk || dev->param.inband_tags) { + if (dev->param.n_caches > 0) { /* If we can't find the data in the cache, then load it up. */ if (!cache) { - cache = yaffs_GrabChunkCache(in->myDev); + cache = yaffs_grab_chunk_cache(in->my_dev); cache->object = in; - cache->chunkId = chunk; + cache->chunk_id = chunk; cache->dirty = 0; cache->locked = 0; - yaffs_ReadChunkDataFromObject(in, chunk, + yaffs_rd_data_obj(in, chunk, cache-> data); - cache->nBytes = 0; + cache->n_bytes = 0; } - yaffs_UseChunkCache(dev, cache, 0); + yaffs_use_cache(dev, cache, 0); cache->locked = 1; @@ -4713,21 +3498,21 @@ int yaffs_ReadDataFromFile(yaffs_Object *in, __u8 *buffer, loff_t offset, /* Read into the local buffer then copy..*/ __u8 *localBuffer = - yaffs_GetTempBuffer(dev, __LINE__); - yaffs_ReadChunkDataFromObject(in, chunk, + yaffs_get_temp_buffer(dev, __LINE__); + yaffs_rd_data_obj(in, chunk, localBuffer); memcpy(buffer, &localBuffer[start], nToCopy); - yaffs_ReleaseTempBuffer(dev, localBuffer, + yaffs_release_temp_buffer(dev, localBuffer, __LINE__); } } else { /* A full chunk. Read directly into the supplied buffer. */ - yaffs_ReadChunkDataFromObject(in, chunk, buffer); + yaffs_rd_data_obj(in, chunk, buffer); } @@ -4741,44 +3526,42 @@ int yaffs_ReadDataFromFile(yaffs_Object *in, __u8 *buffer, loff_t offset, return nDone; } -int yaffs_WriteDataToFile(yaffs_Object *in, const __u8 *buffer, loff_t offset, - int nBytes, int writeThrough) +int yaffs_do_file_wr(yaffs_obj_t *in, const __u8 *buffer, loff_t offset, + int n_bytes, int write_trhrough) { int chunk; __u32 start; int nToCopy; - int n = nBytes; + int n = n_bytes; int nDone = 0; int nToWriteBack; int startOfWrite = offset; int chunkWritten = 0; - __u32 nBytesRead; + __u32 n_bytesRead; __u32 chunkStart; - yaffs_Device *dev; + yaffs_dev_t *dev; - dev = in->myDev; + dev = in->my_dev; while (n > 0 && chunkWritten >= 0) { - /* chunk = offset / dev->nDataBytesPerChunk + 1; */ - /* start = offset % dev->nDataBytesPerChunk; */ - yaffs_AddrToChunk(dev, offset, &chunk, &start); + yaffs_addr_to_chunk(dev, offset, &chunk, &start); - if (chunk * dev->nDataBytesPerChunk + start != offset || - start >= dev->nDataBytesPerChunk) { + if (chunk * dev->data_bytes_per_chunk + start != offset || + start >= dev->data_bytes_per_chunk) { T(YAFFS_TRACE_ERROR, ( TSTR("AddrToChunk of offset %d gives chunk %d start %d" TENDSTR), (int)offset, chunk, start)); } - chunk++; + chunk++; /* File pos to chunk in file offset */ /* OK now check for the curveball where the start and end are in * the same chunk. */ - if ((start + n) < dev->nDataBytesPerChunk) { + if ((start + n) < dev->data_bytes_per_chunk) { nToCopy = n; /* Now folks, to calculate how many bytes to write back.... @@ -4786,51 +3569,49 @@ int yaffs_WriteDataToFile(yaffs_Object *in, const __u8 *buffer, loff_t offset, * we need to write back as much as was there before. */ - chunkStart = ((chunk - 1) * dev->nDataBytesPerChunk); + chunkStart = ((chunk - 1) * dev->data_bytes_per_chunk); - if (chunkStart > in->variant.fileVariant.fileSize) - nBytesRead = 0; /* Past end of file */ + if (chunkStart > in->variant.file_variant.file_size) + n_bytesRead = 0; /* Past end of file */ else - nBytesRead = in->variant.fileVariant.fileSize - chunkStart; + n_bytesRead = in->variant.file_variant.file_size - chunkStart; - if (nBytesRead > dev->nDataBytesPerChunk) - nBytesRead = dev->nDataBytesPerChunk; + if (n_bytesRead > dev->data_bytes_per_chunk) + n_bytesRead = dev->data_bytes_per_chunk; nToWriteBack = - (nBytesRead > - (start + n)) ? nBytesRead : (start + n); + (n_bytesRead > + (start + n)) ? n_bytesRead : (start + n); - if (nToWriteBack < 0 || nToWriteBack > dev->nDataBytesPerChunk) + if (nToWriteBack < 0 || nToWriteBack > dev->data_bytes_per_chunk) YBUG(); } else { - nToCopy = dev->nDataBytesPerChunk - start; - nToWriteBack = dev->nDataBytesPerChunk; + nToCopy = dev->data_bytes_per_chunk - start; + nToWriteBack = dev->data_bytes_per_chunk; } - if (nToCopy != dev->nDataBytesPerChunk || dev->inbandTags) { + if (nToCopy != dev->data_bytes_per_chunk || dev->param.inband_tags) { /* An incomplete start or end chunk (or maybe both start and end chunk), * or we're using inband tags, so we want to use the cache buffers. */ - if (dev->nShortOpCaches > 0) { - yaffs_ChunkCache *cache; + if (dev->param.n_caches > 0) { + yaffs_cache_t *cache; /* If we can't find the data in the cache, then load the cache */ - cache = yaffs_FindChunkCache(in, chunk); + cache = yaffs_find_chunk_cache(in, chunk); if (!cache - && yaffs_CheckSpaceForAllocation(in-> - myDev)) { - cache = yaffs_GrabChunkCache(in->myDev); + && yaffs_check_alloc_available(dev, 1)) { + cache = yaffs_grab_chunk_cache(dev); cache->object = in; - cache->chunkId = chunk; + cache->chunk_id = chunk; cache->dirty = 0; cache->locked = 0; - yaffs_ReadChunkDataFromObject(in, chunk, - cache-> - data); + yaffs_rd_data_obj(in, chunk, + cache->data); } else if (cache && !cache->dirty && - !yaffs_CheckSpaceForAllocation(in->myDev)) { + !yaffs_check_alloc_available(dev, 1)) { /* Drop the cache if it was a read cache item and * no space check has been made for it. */ @@ -4838,7 +3619,7 @@ int yaffs_WriteDataToFile(yaffs_Object *in, const __u8 *buffer, loff_t offset, } if (cache) { - yaffs_UseChunkCache(dev, cache, 1); + yaffs_use_cache(dev, cache, 1); cache->locked = 1; @@ -4847,14 +3628,14 @@ int yaffs_WriteDataToFile(yaffs_Object *in, const __u8 *buffer, loff_t offset, cache->locked = 0; - cache->nBytes = nToWriteBack; + cache->n_bytes = nToWriteBack; - if (writeThrough) { + if (write_trhrough) { chunkWritten = - yaffs_WriteChunkDataToObject + yaffs_wr_data_obj (cache->object, - cache->chunkId, - cache->data, cache->nBytes, + cache->chunk_id, + cache->data, cache->n_bytes, 1); cache->dirty = 0; } @@ -4868,9 +3649,9 @@ int yaffs_WriteDataToFile(yaffs_Object *in, const __u8 *buffer, loff_t offset, */ __u8 *localBuffer = - yaffs_GetTempBuffer(dev, __LINE__); + yaffs_get_temp_buffer(dev, __LINE__); - yaffs_ReadChunkDataFromObject(in, chunk, + yaffs_rd_data_obj(in, chunk, localBuffer); @@ -4878,12 +3659,12 @@ int yaffs_WriteDataToFile(yaffs_Object *in, const __u8 *buffer, loff_t offset, memcpy(&localBuffer[start], buffer, nToCopy); chunkWritten = - yaffs_WriteChunkDataToObject(in, chunk, + yaffs_wr_data_obj(in, chunk, localBuffer, nToWriteBack, 0); - yaffs_ReleaseTempBuffer(dev, localBuffer, + yaffs_release_temp_buffer(dev, localBuffer, __LINE__); } @@ -4894,12 +3675,12 @@ int yaffs_WriteDataToFile(yaffs_Object *in, const __u8 *buffer, loff_t offset, chunkWritten = - yaffs_WriteChunkDataToObject(in, chunk, buffer, - dev->nDataBytesPerChunk, + yaffs_wr_data_obj(in, chunk, buffer, + dev->data_bytes_per_chunk, 0); /* Since we've overwritten the cached data, we better invalidate it. */ - yaffs_InvalidateChunkCache(in, chunk); + yaffs_invalidate_chunk_cache(in, chunk); } if (chunkWritten >= 0) { @@ -4913,29 +3694,37 @@ int yaffs_WriteDataToFile(yaffs_Object *in, const __u8 *buffer, loff_t offset, /* Update file object */ - if ((startOfWrite + nDone) > in->variant.fileVariant.fileSize) - in->variant.fileVariant.fileSize = (startOfWrite + nDone); + if ((startOfWrite + nDone) > in->variant.file_variant.file_size) + in->variant.file_variant.file_size = (startOfWrite + nDone); in->dirty = 1; return nDone; } +int yaffs_wr_file(yaffs_obj_t *in, const __u8 *buffer, loff_t offset, + int n_bytes, int write_trhrough) +{ + yaffs2_handle_hole(in,offset); + return yaffs_do_file_wr(in,buffer,offset,n_bytes,write_trhrough); +} + + /* ---------------------- File resizing stuff ------------------ */ -static void yaffs_PruneResizedChunks(yaffs_Object *in, int newSize) +static void yaffs_prune_chunks(yaffs_obj_t *in, int new_size) { - yaffs_Device *dev = in->myDev; - int oldFileSize = in->variant.fileVariant.fileSize; + yaffs_dev_t *dev = in->my_dev; + int oldFileSize = in->variant.file_variant.file_size; - int lastDel = 1 + (oldFileSize - 1) / dev->nDataBytesPerChunk; + int lastDel = 1 + (oldFileSize - 1) / dev->data_bytes_per_chunk; - int startDel = 1 + (newSize + dev->nDataBytesPerChunk - 1) / - dev->nDataBytesPerChunk; + int startDel = 1 + (new_size + dev->data_bytes_per_chunk - 1) / + dev->data_bytes_per_chunk; int i; - int chunkId; + int chunk_id; /* Delete backwards so that we don't end up with holes if * power is lost part-way through the operation. @@ -4943,103 +3732,112 @@ static void yaffs_PruneResizedChunks(yaffs_Object *in, int newSize) for (i = lastDel; i >= startDel; i--) { /* NB this could be optimised somewhat, * eg. could retrieve the tags and write them without - * using yaffs_DeleteChunk + * using yaffs_chunk_del */ - chunkId = yaffs_FindAndDeleteChunkInFile(in, i, NULL); - if (chunkId > 0) { - if (chunkId < - (dev->internalStartBlock * dev->nChunksPerBlock) - || chunkId >= - ((dev->internalEndBlock + - 1) * dev->nChunksPerBlock)) { + chunk_id = yaffs_find_del_file_chunk(in, i, NULL); + if (chunk_id > 0) { + if (chunk_id < + (dev->internal_start_block * dev->param.chunks_per_block) + || chunk_id >= + ((dev->internal_end_block + + 1) * dev->param.chunks_per_block)) { T(YAFFS_TRACE_ALWAYS, - (TSTR("Found daft chunkId %d for %d" TENDSTR), - chunkId, i)); + (TSTR("Found daft chunk_id %d for %d" TENDSTR), + chunk_id, i)); } else { - in->nDataChunks--; - yaffs_DeleteChunk(dev, chunkId, 1, __LINE__); + in->n_data_chunks--; + yaffs_chunk_del(dev, chunk_id, 1, __LINE__); } } } } -int yaffs_ResizeFile(yaffs_Object *in, loff_t newSize) -{ - int oldFileSize = in->variant.fileVariant.fileSize; - __u32 newSizeOfPartialChunk; +void yaffs_resize_file_down( yaffs_obj_t *obj, loff_t new_size) +{ int newFullChunks; + __u32 new_sizeOfPartialChunk; + yaffs_dev_t *dev = obj->my_dev; - yaffs_Device *dev = in->myDev; + yaffs_addr_to_chunk(dev, new_size, &newFullChunks, &new_sizeOfPartialChunk); - yaffs_AddrToChunk(dev, newSize, &newFullChunks, &newSizeOfPartialChunk); + yaffs_prune_chunks(obj, new_size); - yaffs_FlushFilesChunkCache(in); - yaffs_InvalidateWholeChunkCache(in); + if (new_sizeOfPartialChunk != 0) { + int lastChunk = 1 + newFullChunks; + __u8 *localBuffer = yaffs_get_temp_buffer(dev, __LINE__); - yaffs_CheckGarbageCollection(dev); + /* Got to read and rewrite the last chunk with its new size and zero pad */ + yaffs_rd_data_obj(obj, lastChunk, localBuffer); + memset(localBuffer + new_sizeOfPartialChunk, 0, + dev->data_bytes_per_chunk - new_sizeOfPartialChunk); - if (in->variantType != YAFFS_OBJECT_TYPE_FILE) - return YAFFS_FAIL; - - if (newSize == oldFileSize) - return YAFFS_OK; + yaffs_wr_data_obj(obj, lastChunk, localBuffer, + new_sizeOfPartialChunk, 1); - if (newSize < oldFileSize) { - - yaffs_PruneResizedChunks(in, newSize); + yaffs_release_temp_buffer(dev, localBuffer, __LINE__); + } - if (newSizeOfPartialChunk != 0) { - int lastChunk = 1 + newFullChunks; + obj->variant.file_variant.file_size = new_size; - __u8 *localBuffer = yaffs_GetTempBuffer(dev, __LINE__); + yaffs_prune_tree(dev, &obj->variant.file_variant); +} - /* Got to read and rewrite the last chunk with its new size and zero pad */ - yaffs_ReadChunkDataFromObject(in, lastChunk, - localBuffer); - memset(localBuffer + newSizeOfPartialChunk, 0, - dev->nDataBytesPerChunk - newSizeOfPartialChunk); +int yaffs_resize_file(yaffs_obj_t *in, loff_t new_size) +{ + yaffs_dev_t *dev = in->my_dev; + int oldFileSize = in->variant.file_variant.file_size; - yaffs_WriteChunkDataToObject(in, lastChunk, localBuffer, - newSizeOfPartialChunk, 1); + yaffs_flush_file_cache(in); + yaffs_invalidate_whole_cache(in); - yaffs_ReleaseTempBuffer(dev, localBuffer, __LINE__); - } + yaffs_check_gc(dev,0); - in->variant.fileVariant.fileSize = newSize; + if (in->variant_type != YAFFS_OBJECT_TYPE_FILE) + return YAFFS_FAIL; - yaffs_PruneFileStructure(dev, &in->variant.fileVariant); + if (new_size == oldFileSize) + return YAFFS_OK; + + if(new_size > oldFileSize){ + yaffs2_handle_hole(in,new_size); + in->variant.file_variant.file_size = new_size; } else { - /* newsSize > oldFileSize */ - in->variant.fileVariant.fileSize = newSize; - } - + /* new_size < oldFileSize */ + yaffs_resize_file_down(in, new_size); + } - /* Write a new object header. + /* Write a new object header to reflect the resize. * show we've shrunk the file, if need be - * Do this only if the file is not in the deleted directories. + * Do this only if the file is not in the deleted directories + * and is not shadowed. */ if (in->parent && - in->parent->objectId != YAFFS_OBJECTID_UNLINKED && - in->parent->objectId != YAFFS_OBJECTID_DELETED) - yaffs_UpdateObjectHeader(in, NULL, 0, - (newSize < oldFileSize) ? 1 : 0, 0); + !in->is_shadowed && + in->parent->obj_id != YAFFS_OBJECTID_UNLINKED && + in->parent->obj_id != YAFFS_OBJECTID_DELETED) + yaffs_update_oh(in, NULL, 0, 0, 0, NULL); + return YAFFS_OK; } -loff_t yaffs_GetFileSize(yaffs_Object *obj) +loff_t yaffs_get_file_size(yaffs_obj_t *obj) { - obj = yaffs_GetEquivalentObject(obj); + YCHAR *alias = NULL; + obj = yaffs_get_equivalent_obj(obj); - switch (obj->variantType) { + switch (obj->variant_type) { case YAFFS_OBJECT_TYPE_FILE: - return obj->variant.fileVariant.fileSize; + return obj->variant.file_variant.file_size; case YAFFS_OBJECT_TYPE_SYMLINK: - return yaffs_strlen(obj->variant.symLinkVariant.alias); + alias = obj->variant.symlink_variant.alias; + if(!alias) + return 0; + return yaffs_strnlen(alias,YAFFS_MAX_ALIAS_LENGTH); default: return 0; } @@ -5047,23 +3845,27 @@ loff_t yaffs_GetFileSize(yaffs_Object *obj) -int yaffs_FlushFile(yaffs_Object *in, int updateTime) +int yaffs_flush_file(yaffs_obj_t *in, int update_time, int data_sync) { int retVal; if (in->dirty) { - yaffs_FlushFilesChunkCache(in); - if (updateTime) { + yaffs_flush_file_cache(in); + if(data_sync) /* Only sync data */ + retVal=YAFFS_OK; + else { + if (update_time) { #ifdef CONFIG_YAFFS_WINCE - yfsd_WinFileTimeNow(in->win_mtime); + yfsd_win_file_time_now(in->win_mtime); #else - in->yst_mtime = Y_CURRENT_TIME; + in->yst_mtime = Y_CURRENT_TIME; #endif - } + } - retVal = (yaffs_UpdateObjectHeader(in, NULL, 0, 0, 0) >= - 0) ? YAFFS_OK : YAFFS_FAIL; + retVal = (yaffs_update_oh(in, NULL, 0, 0, 0, NULL) >= + 0) ? YAFFS_OK : YAFFS_FAIL; + } } else { retVal = YAFFS_OK; } @@ -5072,60 +3874,56 @@ int yaffs_FlushFile(yaffs_Object *in, int updateTime) } -static int yaffs_DoGenericObjectDeletion(yaffs_Object *in) +static int yaffs_generic_obj_del(yaffs_obj_t *in) { /* First off, invalidate the file's data in the cache, without flushing. */ - yaffs_InvalidateWholeChunkCache(in); + yaffs_invalidate_whole_cache(in); - if (in->myDev->isYaffs2 && (in->parent != in->myDev->deletedDir)) { + if (in->my_dev->param.is_yaffs2 && (in->parent != in->my_dev->del_dir)) { /* Move to the unlinked directory so we have a record that it was deleted. */ - yaffs_ChangeObjectName(in, in->myDev->deletedDir, _Y("deleted"), 0, 0); + yaffs_change_obj_name(in, in->my_dev->del_dir, _Y("deleted"), 0, 0); } - yaffs_RemoveObjectFromDirectory(in); - yaffs_DeleteChunk(in->myDev, in->hdrChunk, 1, __LINE__); - in->hdrChunk = 0; + yaffs_remove_obj_from_dir(in); + yaffs_chunk_del(in->my_dev, in->hdr_chunk, 1, __LINE__); + in->hdr_chunk = 0; - yaffs_FreeObject(in); + yaffs_free_obj(in); return YAFFS_OK; } -/* yaffs_DeleteFile deletes the whole file data +/* yaffs_del_file deletes the whole file data * and the inode associated with the file. * It does not delete the links associated with the file. */ -static int yaffs_UnlinkFileIfNeeded(yaffs_Object *in) +static int yaffs_unlink_file_if_needed(yaffs_obj_t *in) { int retVal; int immediateDeletion = 0; + yaffs_dev_t *dev = in->my_dev; -#ifdef __KERNEL__ - if (!in->myInode) + if (!in->my_inode) immediateDeletion = 1; -#else - if (in->inUse <= 0) - immediateDeletion = 1; -#endif if (immediateDeletion) { retVal = - yaffs_ChangeObjectName(in, in->myDev->deletedDir, + yaffs_change_obj_name(in, in->my_dev->del_dir, _Y("deleted"), 0, 0); T(YAFFS_TRACE_TRACING, (TSTR("yaffs: immediate deletion of file %d" TENDSTR), - in->objectId)); + in->obj_id)); in->deleted = 1; - in->myDev->nDeletedFiles++; - if (1 || in->myDev->isYaffs2) - yaffs_ResizeFile(in, 0); - yaffs_SoftDeleteFile(in); + in->my_dev->n_deleted_files++; + if (dev->param.disable_soft_del || dev->param.is_yaffs2) + yaffs_resize_file(in, 0); + yaffs_soft_del_file(in); } else { retVal = - yaffs_ChangeObjectName(in, in->myDev->unlinkedDir, + yaffs_change_obj_name(in, in->my_dev->unlinked_dir, _Y("unlinked"), 0, 0); } @@ -5133,81 +3931,96 @@ static int yaffs_UnlinkFileIfNeeded(yaffs_Object *in) return retVal; } -int yaffs_DeleteFile(yaffs_Object *in) +int yaffs_del_file(yaffs_obj_t *in) { int retVal = YAFFS_OK; - int deleted = in->deleted; + int deleted; /* Need to cache value on stack if in is freed */ + yaffs_dev_t *dev = in->my_dev; - yaffs_ResizeFile(in, 0); + if (dev->param.disable_soft_del || dev->param.is_yaffs2) + yaffs_resize_file(in, 0); - if (in->nDataChunks > 0) { + if (in->n_data_chunks > 0) { /* Use soft deletion if there is data in the file. * That won't be the case if it has been resized to zero. */ if (!in->unlinked) - retVal = yaffs_UnlinkFileIfNeeded(in); + retVal = yaffs_unlink_file_if_needed(in); + + deleted = in->deleted; if (retVal == YAFFS_OK && in->unlinked && !in->deleted) { in->deleted = 1; deleted = 1; - in->myDev->nDeletedFiles++; - yaffs_SoftDeleteFile(in); + in->my_dev->n_deleted_files++; + yaffs_soft_del_file(in); } return deleted ? YAFFS_OK : YAFFS_FAIL; } else { /* The file has no data chunks so we toss it immediately */ - yaffs_FreeTnode(in->myDev, in->variant.fileVariant.top); - in->variant.fileVariant.top = NULL; - yaffs_DoGenericObjectDeletion(in); + yaffs_free_tnode(in->my_dev, in->variant.file_variant.top); + in->variant.file_variant.top = NULL; + yaffs_generic_obj_del(in); return YAFFS_OK; } } -static int yaffs_DeleteDirectory(yaffs_Object *in) +static int yaffs_is_non_empty_dir(yaffs_obj_t *obj) { - /* First check that the directory is empty. */ - if (ylist_empty(&in->variant.directoryVariant.children)) - return yaffs_DoGenericObjectDeletion(in); + return (obj->variant_type == YAFFS_OBJECT_TYPE_DIRECTORY) && + !(ylist_empty(&obj->variant.dir_variant.children)); +} - return YAFFS_FAIL; +static int yaffs_del_dir(yaffs_obj_t *obj) +{ + /* First check that the directory is empty. */ + if (yaffs_is_non_empty_dir(obj)) + return YAFFS_FAIL; + return yaffs_generic_obj_del(obj); } -static int yaffs_DeleteSymLink(yaffs_Object *in) +static int yaffs_del_symlink(yaffs_obj_t *in) { - YFREE(in->variant.symLinkVariant.alias); + if(in->variant.symlink_variant.alias) + YFREE(in->variant.symlink_variant.alias); + in->variant.symlink_variant.alias=NULL; - return yaffs_DoGenericObjectDeletion(in); + return yaffs_generic_obj_del(in); } -static int yaffs_DeleteHardLink(yaffs_Object *in) +static int yaffs_del_link(yaffs_obj_t *in) { /* remove this hardlink from the list assocaited with the equivalent * object */ - ylist_del_init(&in->hardLinks); - return yaffs_DoGenericObjectDeletion(in); + ylist_del_init(&in->hard_links); + return yaffs_generic_obj_del(in); } -int yaffs_DeleteObject(yaffs_Object *obj) +int yaffs_del_obj(yaffs_obj_t *obj) { int retVal = -1; - switch (obj->variantType) { + switch (obj->variant_type) { case YAFFS_OBJECT_TYPE_FILE: - retVal = yaffs_DeleteFile(obj); + retVal = yaffs_del_file(obj); break; case YAFFS_OBJECT_TYPE_DIRECTORY: - return yaffs_DeleteDirectory(obj); + if(!ylist_empty(&obj->variant.dir_variant.dirty)){ + T(YAFFS_TRACE_BACKGROUND, (TSTR("Remove object %d from dirty directories" TENDSTR),obj->obj_id)); + ylist_del_init(&obj->variant.dir_variant.dirty); + } + return yaffs_del_dir(obj); break; case YAFFS_OBJECT_TYPE_SYMLINK: - retVal = yaffs_DeleteSymLink(obj); + retVal = yaffs_del_symlink(obj); break; case YAFFS_OBJECT_TYPE_HARDLINK: - retVal = yaffs_DeleteHardLink(obj); + retVal = yaffs_del_link(obj); break; case YAFFS_OBJECT_TYPE_SPECIAL: - retVal = yaffs_DoGenericObjectDeletion(obj); + retVal = yaffs_generic_obj_del(obj); break; case YAFFS_OBJECT_TYPE_UNKNOWN: retVal = 0; @@ -5217,22 +4030,20 @@ int retVal = -1; return retVal; } -static int yaffs_UnlinkWorker(yaffs_Object *obj) +static int yaffs_unlink_worker(yaffs_obj_t *obj) { int immediateDeletion = 0; -#ifdef __KERNEL__ - if (!obj->myInode) + if (!obj->my_inode) immediateDeletion = 1; -#else - if (obj->inUse <= 0) - immediateDeletion = 1; -#endif - if (obj->variantType == YAFFS_OBJECT_TYPE_HARDLINK) { - return yaffs_DeleteHardLink(obj); - } else if (!ylist_empty(&obj->hardLinks)) { + if(obj) + yaffs_update_parent(obj->parent); + + if (obj->variant_type == YAFFS_OBJECT_TYPE_HARDLINK) { + return yaffs_del_link(obj); + } else if (!ylist_empty(&obj->hard_links)) { /* Curve ball: We're unlinking an object that has a hardlink. * * This problem arises because we are not strictly following @@ -5242,79 +4053,85 @@ static int yaffs_UnlinkWorker(yaffs_Object *obj) * Instead, we do the following: * - Select a hardlink. * - Unhook it from the hard links - * - Unhook it from its parent directory (so that the rename can work) + * - Move it from its parent directory (so that the rename can work) * - Rename the object to the hardlink's name. * - Delete the hardlink */ - yaffs_Object *hl; + yaffs_obj_t *hl; + yaffs_obj_t *parent; int retVal; YCHAR name[YAFFS_MAX_NAME_LENGTH + 1]; - hl = ylist_entry(obj->hardLinks.next, yaffs_Object, hardLinks); + hl = ylist_entry(obj->hard_links.next, yaffs_obj_t, hard_links); - ylist_del_init(&hl->hardLinks); - ylist_del_init(&hl->siblings); + yaffs_get_obj_name(hl, name, YAFFS_MAX_NAME_LENGTH + 1); + parent = hl->parent; - yaffs_GetObjectName(hl, name, YAFFS_MAX_NAME_LENGTH + 1); + ylist_del_init(&hl->hard_links); - retVal = yaffs_ChangeObjectName(obj, hl->parent, name, 0, 0); + yaffs_add_obj_to_dir(obj->my_dev->unlinked_dir, hl); + + retVal = yaffs_change_obj_name(obj,parent, name, 0, 0); if (retVal == YAFFS_OK) - retVal = yaffs_DoGenericObjectDeletion(hl); + retVal = yaffs_generic_obj_del(hl); return retVal; } else if (immediateDeletion) { - switch (obj->variantType) { + switch (obj->variant_type) { case YAFFS_OBJECT_TYPE_FILE: - return yaffs_DeleteFile(obj); + return yaffs_del_file(obj); break; case YAFFS_OBJECT_TYPE_DIRECTORY: - return yaffs_DeleteDirectory(obj); + ylist_del_init(&obj->variant.dir_variant.dirty); + return yaffs_del_dir(obj); break; case YAFFS_OBJECT_TYPE_SYMLINK: - return yaffs_DeleteSymLink(obj); + return yaffs_del_symlink(obj); break; case YAFFS_OBJECT_TYPE_SPECIAL: - return yaffs_DoGenericObjectDeletion(obj); + return yaffs_generic_obj_del(obj); break; case YAFFS_OBJECT_TYPE_HARDLINK: case YAFFS_OBJECT_TYPE_UNKNOWN: default: return YAFFS_FAIL; } - } else - return yaffs_ChangeObjectName(obj, obj->myDev->unlinkedDir, + } else if(yaffs_is_non_empty_dir(obj)) + return YAFFS_FAIL; + else + return yaffs_change_obj_name(obj, obj->my_dev->unlinked_dir, _Y("unlinked"), 0, 0); } -static int yaffs_UnlinkObject(yaffs_Object *obj) +static int yaffs_unlink_obj(yaffs_obj_t *obj) { - if (obj && obj->unlinkAllowed) - return yaffs_UnlinkWorker(obj); + if (obj && obj->unlink_allowed) + return yaffs_unlink_worker(obj); return YAFFS_FAIL; } -int yaffs_Unlink(yaffs_Object *dir, const YCHAR *name) +int yaffs_unlinker(yaffs_obj_t *dir, const YCHAR *name) { - yaffs_Object *obj; + yaffs_obj_t *obj; - obj = yaffs_FindObjectByName(dir, name); - return yaffs_UnlinkObject(obj); + obj = yaffs_find_by_name(dir, name); + return yaffs_unlink_obj(obj); } /*----------------------- Initialisation Scanning ---------------------- */ -static void yaffs_HandleShadowedObject(yaffs_Device *dev, int objId, - int backwardScanning) +void yaffs_handle_shadowed_obj(yaffs_dev_t *dev, int obj_id, + int backward_scanning) { - yaffs_Object *obj; + yaffs_obj_t *obj; - if (!backwardScanning) { + if (!backward_scanning) { /* Handle YAFFS1 forward scanning case * For YAFFS1 we always do the deletion */ @@ -5323,7 +4140,8 @@ static void yaffs_HandleShadowedObject(yaffs_Device *dev, int objId, /* Handle YAFFS2 case (backward scanning) * If the shadowed object exists then ignore. */ - if (yaffs_FindObjectByNumber(dev, objId)) + obj = yaffs_find_by_number(dev, obj_id); + if(obj) return; } @@ -5331,567 +4149,225 @@ static void yaffs_HandleShadowedObject(yaffs_Device *dev, int objId, * We put it in unlinked dir to be cleaned up after the scanning */ obj = - yaffs_FindOrCreateObjectByNumber(dev, objId, + yaffs_find_or_create_by_number(dev, obj_id, YAFFS_OBJECT_TYPE_FILE); if (!obj) return; - yaffs_AddObjectToDirectory(dev->unlinkedDir, obj); - obj->variant.fileVariant.shrinkSize = 0; + obj->is_shadowed = 1; + yaffs_add_obj_to_dir(dev->unlinked_dir, obj); + obj->variant.file_variant.shrink_size = 0; obj->valid = 1; /* So that we don't read any other info for this file */ } -typedef struct { - int seq; - int block; -} yaffs_BlockIndex; - -static void yaffs_HardlinkFixup(yaffs_Device *dev, yaffs_Object *hardList) +void yaffs_link_fixup(yaffs_dev_t *dev, yaffs_obj_t *hard_list) { - yaffs_Object *hl; - yaffs_Object *in; + yaffs_obj_t *hl; + yaffs_obj_t *in; - while (hardList) { - hl = hardList; - hardList = (yaffs_Object *) (hardList->hardLinks.next); + while (hard_list) { + hl = hard_list; + hard_list = (yaffs_obj_t *) (hard_list->hard_links.next); - in = yaffs_FindObjectByNumber(dev, - hl->variant.hardLinkVariant. - equivalentObjectId); + in = yaffs_find_by_number(dev, + hl->variant.hardlink_variant. + equiv_id); if (in) { /* Add the hardlink pointers */ - hl->variant.hardLinkVariant.equivalentObject = in; - ylist_add(&hl->hardLinks, &in->hardLinks); + hl->variant.hardlink_variant.equiv_obj = in; + ylist_add(&hl->hard_links, &in->hard_links); } else { /* Todo Need to report/handle this better. * Got a problem... hardlink to a non-existant object */ - hl->variant.hardLinkVariant.equivalentObject = NULL; - YINIT_LIST_HEAD(&hl->hardLinks); + hl->variant.hardlink_variant.equiv_obj = NULL; + YINIT_LIST_HEAD(&hl->hard_links); } } } - - - -static int ybicmp(const void *a, const void *b) -{ - register int aseq = ((yaffs_BlockIndex *)a)->seq; - register int bseq = ((yaffs_BlockIndex *)b)->seq; - register int ablock = ((yaffs_BlockIndex *)a)->block; - register int bblock = ((yaffs_BlockIndex *)b)->block; - if (aseq == bseq) - return ablock - bblock; - else - return aseq - bseq; -} - - -struct yaffs_ShadowFixerStruct { - int objectId; - int shadowedId; - struct yaffs_ShadowFixerStruct *next; -}; - - -static void yaffs_StripDeletedObjects(yaffs_Device *dev) +static void yaffs_strip_deleted_objs(yaffs_dev_t *dev) { /* * Sort out state of unlinked and deleted objects after scanning. */ struct ylist_head *i; struct ylist_head *n; - yaffs_Object *l; + yaffs_obj_t *l; + + if (dev->read_only) + return; /* Soft delete all the unlinked files */ ylist_for_each_safe(i, n, - &dev->unlinkedDir->variant.directoryVariant.children) { + &dev->unlinked_dir->variant.dir_variant.children) { if (i) { - l = ylist_entry(i, yaffs_Object, siblings); - yaffs_DeleteObject(l); + l = ylist_entry(i, yaffs_obj_t, siblings); + yaffs_del_obj(l); } } ylist_for_each_safe(i, n, - &dev->deletedDir->variant.directoryVariant.children) { + &dev->del_dir->variant.dir_variant.children) { if (i) { - l = ylist_entry(i, yaffs_Object, siblings); - yaffs_DeleteObject(l); + l = ylist_entry(i, yaffs_obj_t, siblings); + yaffs_del_obj(l); } } } -static int yaffs_Scan(yaffs_Device *dev) +/* + * This code iterates through all the objects making sure that they are rooted. + * Any unrooted objects are re-rooted in lost+found. + * An object needs to be in one of: + * - Directly under deleted, unlinked + * - Directly or indirectly under root. + * + * Note: + * This code assumes that we don't ever change the current relationships between + * directories: + * root_dir->parent == unlinked_dir->parent == del_dir->parent == NULL + * lostNfound->parent == root_dir + * + * This fixes the problem where directories might have inadvertently been deleted + * leaving the object "hanging" without being rooted in the directory tree. + */ + +static int yaffs_has_null_parent(yaffs_dev_t *dev, yaffs_obj_t *obj) { - yaffs_ExtendedTags tags; - int blk; - int blockIterator; - int startIterator; - int endIterator; - int result; - - int chunk; - int c; - int deleted; - yaffs_BlockState state; - yaffs_Object *hardList = NULL; - yaffs_BlockInfo *bi; - __u32 sequenceNumber; - yaffs_ObjectHeader *oh; - yaffs_Object *in; - yaffs_Object *parent; - - int alloc_failed = 0; - - struct yaffs_ShadowFixerStruct *shadowFixerList = NULL; - - - __u8 *chunkData; - - - - T(YAFFS_TRACE_SCAN, - (TSTR("yaffs_Scan starts intstartblk %d intendblk %d..." TENDSTR), - dev->internalStartBlock, dev->internalEndBlock)); - - chunkData = yaffs_GetTempBuffer(dev, __LINE__); - - dev->sequenceNumber = YAFFS_LOWEST_SEQUENCE_NUMBER; - - /* Scan all the blocks to determine their state */ - for (blk = dev->internalStartBlock; blk <= dev->internalEndBlock; blk++) { - bi = yaffs_GetBlockInfo(dev, blk); - yaffs_ClearChunkBits(dev, blk); - bi->pagesInUse = 0; - bi->softDeletions = 0; - - yaffs_QueryInitialBlockState(dev, blk, &state, &sequenceNumber); - - bi->blockState = state; - bi->sequenceNumber = sequenceNumber; - - if (bi->sequenceNumber == YAFFS_SEQUENCE_BAD_BLOCK) - bi->blockState = state = YAFFS_BLOCK_STATE_DEAD; - - T(YAFFS_TRACE_SCAN_DEBUG, - (TSTR("Block scanning block %d state %d seq %d" TENDSTR), blk, - state, sequenceNumber)); - - if (state == YAFFS_BLOCK_STATE_DEAD) { - T(YAFFS_TRACE_BAD_BLOCKS, - (TSTR("block %d is bad" TENDSTR), blk)); - } else if (state == YAFFS_BLOCK_STATE_EMPTY) { - T(YAFFS_TRACE_SCAN_DEBUG, - (TSTR("Block empty " TENDSTR))); - dev->nErasedBlocks++; - dev->nFreeChunks += dev->nChunksPerBlock; - } - } - - startIterator = dev->internalStartBlock; - endIterator = dev->internalEndBlock; - - /* For each block.... */ - for (blockIterator = startIterator; !alloc_failed && blockIterator <= endIterator; - blockIterator++) { - - YYIELD(); - - YYIELD(); - - blk = blockIterator; - - bi = yaffs_GetBlockInfo(dev, blk); - state = bi->blockState; - - deleted = 0; - - /* For each chunk in each block that needs scanning....*/ - for (c = 0; !alloc_failed && c < dev->nChunksPerBlock && - state == YAFFS_BLOCK_STATE_NEEDS_SCANNING; c++) { - /* Read the tags and decide what to do */ - chunk = blk * dev->nChunksPerBlock + c; - - result = yaffs_ReadChunkWithTagsFromNAND(dev, chunk, NULL, - &tags); - - /* Let's have a good look at this chunk... */ - - if (tags.eccResult == YAFFS_ECC_RESULT_UNFIXED || tags.chunkDeleted) { - /* YAFFS1 only... - * A deleted chunk - */ - deleted++; - dev->nFreeChunks++; - /*T((" %d %d deleted\n",blk,c)); */ - } else if (!tags.chunkUsed) { - /* An unassigned chunk in the block - * This means that either the block is empty or - * this is the one being allocated from - */ - - if (c == 0) { - /* We're looking at the first chunk in the block so the block is unused */ - state = YAFFS_BLOCK_STATE_EMPTY; - dev->nErasedBlocks++; - } else { - /* this is the block being allocated from */ - T(YAFFS_TRACE_SCAN, - (TSTR - (" Allocating from %d %d" TENDSTR), - blk, c)); - state = YAFFS_BLOCK_STATE_ALLOCATING; - dev->allocationBlock = blk; - dev->allocationPage = c; - dev->allocationBlockFinder = blk; - /* Set it to here to encourage the allocator to go forth from here. */ - - } - - dev->nFreeChunks += (dev->nChunksPerBlock - c); - } else if (tags.chunkId > 0) { - /* chunkId > 0 so it is a data chunk... */ - unsigned int endpos; - - yaffs_SetChunkBit(dev, blk, c); - bi->pagesInUse++; - - in = yaffs_FindOrCreateObjectByNumber(dev, - tags. - objectId, - YAFFS_OBJECT_TYPE_FILE); - /* PutChunkIntoFile checks for a clash (two data chunks with - * the same chunkId). - */ + return (obj == dev->del_dir || + obj == dev->unlinked_dir|| + obj == dev->root_dir); +} - if (!in) - alloc_failed = 1; +static void yaffs_fix_hanging_objs(yaffs_dev_t *dev) +{ + yaffs_obj_t *obj; + yaffs_obj_t *parent; + int i; + struct ylist_head *lh; + struct ylist_head *n; + int depthLimit; + int hanging; - if (in) { - if (!yaffs_PutChunkIntoFile(in, tags.chunkId, chunk, 1)) - alloc_failed = 1; - } + if (dev->read_only) + return; - endpos = - (tags.chunkId - 1) * dev->nDataBytesPerChunk + - tags.byteCount; - if (in && - in->variantType == YAFFS_OBJECT_TYPE_FILE - && in->variant.fileVariant.scannedFileSize < - endpos) { - in->variant.fileVariant. - scannedFileSize = endpos; - if (!dev->useHeaderFileSize) { - in->variant.fileVariant. - fileSize = - in->variant.fileVariant. - scannedFileSize; - } + /* Iterate through the objects in each hash entry, + * looking at each object. + * Make sure it is rooted. + */ + for (i = 0; i < YAFFS_NOBJECT_BUCKETS; i++) { + ylist_for_each_safe(lh, n, &dev->obj_bucket[i].list) { + if (lh) { + obj = ylist_entry(lh, yaffs_obj_t, hash_link); + parent= obj->parent; + + if(yaffs_has_null_parent(dev,obj)){ + /* These directories are not hanging */ + hanging = 0; } - /* T((" %d %d data %d %d\n",blk,c,tags.objectId,tags.chunkId)); */ - } else { - /* chunkId == 0, so it is an ObjectHeader. - * Thus, we read in the object header and make the object - */ - yaffs_SetChunkBit(dev, blk, c); - bi->pagesInUse++; - - result = yaffs_ReadChunkWithTagsFromNAND(dev, chunk, - chunkData, - NULL); - - oh = (yaffs_ObjectHeader *) chunkData; - - in = yaffs_FindObjectByNumber(dev, - tags.objectId); - if (in && in->variantType != oh->type) { - /* This should not happen, but somehow - * Wev'e ended up with an objectId that has been reused but not yet - * deleted, and worse still it has changed type. Delete the old object. + else if(!parent || parent->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) + hanging = 1; + else if(yaffs_has_null_parent(dev,parent)) + hanging = 0; + else { + /* + * Need to follow the parent chain to see if it is hanging. */ - - yaffs_DeleteObject(in); - - in = 0; - } - - in = yaffs_FindOrCreateObjectByNumber(dev, - tags. - objectId, - oh->type); - - if (!in) - alloc_failed = 1; - - if (in && oh->shadowsObject > 0) { - - struct yaffs_ShadowFixerStruct *fixer; - fixer = YMALLOC(sizeof(struct yaffs_ShadowFixerStruct)); - if (fixer) { - fixer->next = shadowFixerList; - shadowFixerList = fixer; - fixer->objectId = tags.objectId; - fixer->shadowedId = oh->shadowsObject; + hanging = 0; + depthLimit=100; + + while(parent != dev->root_dir && + parent->parent && + parent->parent->variant_type == YAFFS_OBJECT_TYPE_DIRECTORY && + depthLimit > 0){ + parent = parent->parent; + depthLimit--; } - + if(parent != dev->root_dir) + hanging = 1; } - - if (in && in->valid) { - /* We have already filled this one. We have a duplicate and need to resolve it. */ - - unsigned existingSerial = in->serial; - unsigned newSerial = tags.serialNumber; - - if (((existingSerial + 1) & 3) == newSerial) { - /* Use new one - destroy the exisiting one */ - yaffs_DeleteChunk(dev, - in->hdrChunk, - 1, __LINE__); - in->valid = 0; - } else { - /* Use existing - destroy this one. */ - yaffs_DeleteChunk(dev, chunk, 1, - __LINE__); - } - } - - if (in && !in->valid && - (tags.objectId == YAFFS_OBJECTID_ROOT || - tags.objectId == YAFFS_OBJECTID_LOSTNFOUND)) { - /* We only load some info, don't fiddle with directory structure */ - in->valid = 1; - in->variantType = oh->type; - - in->yst_mode = oh->yst_mode; -#ifdef CONFIG_YAFFS_WINCE - in->win_atime[0] = oh->win_atime[0]; - in->win_ctime[0] = oh->win_ctime[0]; - in->win_mtime[0] = oh->win_mtime[0]; - in->win_atime[1] = oh->win_atime[1]; - in->win_ctime[1] = oh->win_ctime[1]; - in->win_mtime[1] = oh->win_mtime[1]; -#else - in->yst_uid = oh->yst_uid; - in->yst_gid = oh->yst_gid; - in->yst_atime = oh->yst_atime; - in->yst_mtime = oh->yst_mtime; - in->yst_ctime = oh->yst_ctime; - in->yst_rdev = oh->yst_rdev; -#endif - in->hdrChunk = chunk; - in->serial = tags.serialNumber; - - } else if (in && !in->valid) { - /* we need to load this info */ - - in->valid = 1; - in->variantType = oh->type; - - in->yst_mode = oh->yst_mode; -#ifdef CONFIG_YAFFS_WINCE - in->win_atime[0] = oh->win_atime[0]; - in->win_ctime[0] = oh->win_ctime[0]; - in->win_mtime[0] = oh->win_mtime[0]; - in->win_atime[1] = oh->win_atime[1]; - in->win_ctime[1] = oh->win_ctime[1]; - in->win_mtime[1] = oh->win_mtime[1]; -#else - in->yst_uid = oh->yst_uid; - in->yst_gid = oh->yst_gid; - in->yst_atime = oh->yst_atime; - in->yst_mtime = oh->yst_mtime; - in->yst_ctime = oh->yst_ctime; - in->yst_rdev = oh->yst_rdev; -#endif - in->hdrChunk = chunk; - in->serial = tags.serialNumber; - - yaffs_SetObjectName(in, oh->name); - in->dirty = 0; - - /* directory stuff... - * hook up to parent - */ - - parent = - yaffs_FindOrCreateObjectByNumber - (dev, oh->parentObjectId, - YAFFS_OBJECT_TYPE_DIRECTORY); - if (!parent) - alloc_failed = 1; - if (parent && parent->variantType == - YAFFS_OBJECT_TYPE_UNKNOWN) { - /* Set up as a directory */ - parent->variantType = - YAFFS_OBJECT_TYPE_DIRECTORY; - YINIT_LIST_HEAD(&parent->variant. - directoryVariant. - children); - } else if (!parent || parent->variantType != - YAFFS_OBJECT_TYPE_DIRECTORY) { - /* Hoosterman, another problem.... - * We're trying to use a non-directory as a directory - */ - - T(YAFFS_TRACE_ERROR, - (TSTR - ("yaffs tragedy: attempting to use non-directory as a directory in scan. Put in lost+found." - TENDSTR))); - parent = dev->lostNFoundDir; - } - - yaffs_AddObjectToDirectory(parent, in); - - if (0 && (parent == dev->deletedDir || - parent == dev->unlinkedDir)) { - in->deleted = 1; /* If it is unlinked at start up then it wants deleting */ - dev->nDeletedFiles++; - } - /* Note re hardlinks. - * Since we might scan a hardlink before its equivalent object is scanned - * we put them all in a list. - * After scanning is complete, we should have all the objects, so we run through this - * list and fix up all the chains. - */ - - switch (in->variantType) { - case YAFFS_OBJECT_TYPE_UNKNOWN: - /* Todo got a problem */ - break; - case YAFFS_OBJECT_TYPE_FILE: - if (dev->useHeaderFileSize) - - in->variant.fileVariant. - fileSize = - oh->fileSize; - - break; - case YAFFS_OBJECT_TYPE_HARDLINK: - in->variant.hardLinkVariant. - equivalentObjectId = - oh->equivalentObjectId; - in->hardLinks.next = - (struct ylist_head *) - hardList; - hardList = in; - break; - case YAFFS_OBJECT_TYPE_DIRECTORY: - /* Do nothing */ - break; - case YAFFS_OBJECT_TYPE_SPECIAL: - /* Do nothing */ - break; - case YAFFS_OBJECT_TYPE_SYMLINK: - in->variant.symLinkVariant.alias = - yaffs_CloneString(oh->alias); - if (!in->variant.symLinkVariant.alias) - alloc_failed = 1; - break; - } - -/* - if (parent == dev->deletedDir) { - yaffs_DestroyObject(in); - bi->hasShrinkHeader = 1; - } -*/ + if(hanging){ + T(YAFFS_TRACE_SCAN, + (TSTR("Hanging object %d moved to lost and found" TENDSTR), + obj->obj_id)); + yaffs_add_obj_to_dir(dev->lost_n_found,obj); } } } - - if (state == YAFFS_BLOCK_STATE_NEEDS_SCANNING) { - /* If we got this far while scanning, then the block is fully allocated.*/ - state = YAFFS_BLOCK_STATE_FULL; - } - - bi->blockState = state; - - /* Now let's see if it was dirty */ - if (bi->pagesInUse == 0 && - !bi->hasShrinkHeader && - bi->blockState == YAFFS_BLOCK_STATE_FULL) { - yaffs_BlockBecameDirty(dev, blk); - } - } +} - /* Ok, we've done all the scanning. - * Fix up the hard link chains. - * We should now have scanned all the objects, now it's time to add these - * hardlinks. - */ +/* + * Delete directory contents for cleaning up lost and found. + */ +static void yaffs_del_dir_contents(yaffs_obj_t *dir) +{ + yaffs_obj_t *obj; + struct ylist_head *lh; + struct ylist_head *n; - yaffs_HardlinkFixup(dev, hardList); + if(dir->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) + YBUG(); + + ylist_for_each_safe(lh, n, &dir->variant.dir_variant.children) { + if (lh) { + obj = ylist_entry(lh, yaffs_obj_t, siblings); + if(obj->variant_type == YAFFS_OBJECT_TYPE_DIRECTORY) + yaffs_del_dir_contents(obj); - /* Fix up any shadowed objects */ - { - struct yaffs_ShadowFixerStruct *fixer; - yaffs_Object *obj; + T(YAFFS_TRACE_SCAN, + (TSTR("Deleting lost_found object %d" TENDSTR), + obj->obj_id)); - while (shadowFixerList) { - fixer = shadowFixerList; - shadowFixerList = fixer->next; - /* Complete the rename transaction by deleting the shadowed object - * then setting the object header to unshadowed. + /* Need to use UnlinkObject since Delete would not handle + * hardlinked objects correctly. */ - obj = yaffs_FindObjectByNumber(dev, fixer->shadowedId); - if (obj) - yaffs_DeleteObject(obj); - - obj = yaffs_FindObjectByNumber(dev, fixer->objectId); - - if (obj) - yaffs_UpdateObjectHeader(obj, NULL, 1, 0, 0); - - YFREE(fixer); + yaffs_unlink_obj(obj); } } + +} - yaffs_ReleaseTempBuffer(dev, chunkData, __LINE__); - - if (alloc_failed) - return YAFFS_FAIL; - - T(YAFFS_TRACE_SCAN, (TSTR("yaffs_Scan ends" TENDSTR))); - - - return YAFFS_OK; +static void yaffs_empty_l_n_f(yaffs_dev_t *dev) +{ + yaffs_del_dir_contents(dev->lost_n_found); } -static void yaffs_CheckObjectDetailsLoaded(yaffs_Object *in) +static void yaffs_check_obj_details_loaded(yaffs_obj_t *in) { __u8 *chunkData; - yaffs_ObjectHeader *oh; - yaffs_Device *dev; - yaffs_ExtendedTags tags; + yaffs_obj_header *oh; + yaffs_dev_t *dev; + yaffs_ext_tags tags; int result; int alloc_failed = 0; if (!in) return; - dev = in->myDev; + dev = in->my_dev; #if 0 T(YAFFS_TRACE_SCAN, (TSTR("details for object %d %s loaded" TENDSTR), - in->objectId, - in->lazyLoaded ? "not yet" : "already")); + in->obj_id, + in->lazy_loaded ? "not yet" : "already")); #endif - if (in->lazyLoaded && in->hdrChunk > 0) { - in->lazyLoaded = 0; - chunkData = yaffs_GetTempBuffer(dev, __LINE__); + if (in->lazy_loaded && in->hdr_chunk > 0) { + in->lazy_loaded = 0; + chunkData = yaffs_get_temp_buffer(dev, __LINE__); - result = yaffs_ReadChunkWithTagsFromNAND(dev, in->hdrChunk, chunkData, &tags); - oh = (yaffs_ObjectHeader *) chunkData; + result = yaffs_rd_chunk_tags_nand(dev, in->hdr_chunk, chunkData, &tags); + oh = (yaffs_obj_header *) chunkData; in->yst_mode = oh->yst_mode; #ifdef CONFIG_YAFFS_WINCE @@ -5910,786 +4386,106 @@ static void yaffs_CheckObjectDetailsLoaded(yaffs_Object *in) in->yst_rdev = oh->yst_rdev; #endif - yaffs_SetObjectName(in, oh->name); + yaffs_set_obj_name_from_oh(in, oh); - if (in->variantType == YAFFS_OBJECT_TYPE_SYMLINK) { - in->variant.symLinkVariant.alias = - yaffs_CloneString(oh->alias); - if (!in->variant.symLinkVariant.alias) + if (in->variant_type == YAFFS_OBJECT_TYPE_SYMLINK) { + in->variant.symlink_variant.alias = + yaffs_clone_str(oh->alias); + if (!in->variant.symlink_variant.alias) alloc_failed = 1; /* Not returned to caller */ } - yaffs_ReleaseTempBuffer(dev, chunkData, __LINE__); - } -} - -static int yaffs_ScanBackwards(yaffs_Device *dev) -{ - yaffs_ExtendedTags tags; - int blk; - int blockIterator; - int startIterator; - int endIterator; - int nBlocksToScan = 0; - - int chunk; - int result; - int c; - int deleted; - yaffs_BlockState state; - yaffs_Object *hardList = NULL; - yaffs_BlockInfo *bi; - __u32 sequenceNumber; - yaffs_ObjectHeader *oh; - yaffs_Object *in; - yaffs_Object *parent; - int nBlocks = dev->internalEndBlock - dev->internalStartBlock + 1; - int itsUnlinked; - __u8 *chunkData; - - int fileSize; - int isShrink; - int foundChunksInBlock; - int equivalentObjectId; - int alloc_failed = 0; - - - yaffs_BlockIndex *blockIndex = NULL; - int altBlockIndex = 0; - - if (!dev->isYaffs2) { - T(YAFFS_TRACE_SCAN, - (TSTR("yaffs_ScanBackwards is only for YAFFS2!" TENDSTR))); - return YAFFS_FAIL; - } - - T(YAFFS_TRACE_SCAN, - (TSTR - ("yaffs_ScanBackwards starts intstartblk %d intendblk %d..." - TENDSTR), dev->internalStartBlock, dev->internalEndBlock)); - - - dev->sequenceNumber = YAFFS_LOWEST_SEQUENCE_NUMBER; - - blockIndex = YMALLOC(nBlocks * sizeof(yaffs_BlockIndex)); - - if (!blockIndex) { - blockIndex = YMALLOC_ALT(nBlocks * sizeof(yaffs_BlockIndex)); - altBlockIndex = 1; - } - - if (!blockIndex) { - T(YAFFS_TRACE_SCAN, - (TSTR("yaffs_Scan() could not allocate block index!" TENDSTR))); - return YAFFS_FAIL; - } - - dev->blocksInCheckpoint = 0; - - chunkData = yaffs_GetTempBuffer(dev, __LINE__); - - /* Scan all the blocks to determine their state */ - for (blk = dev->internalStartBlock; blk <= dev->internalEndBlock; blk++) { - bi = yaffs_GetBlockInfo(dev, blk); - yaffs_ClearChunkBits(dev, blk); - bi->pagesInUse = 0; - bi->softDeletions = 0; - - yaffs_QueryInitialBlockState(dev, blk, &state, &sequenceNumber); - - bi->blockState = state; - bi->sequenceNumber = sequenceNumber; - - if (bi->sequenceNumber == YAFFS_SEQUENCE_CHECKPOINT_DATA) - bi->blockState = state = YAFFS_BLOCK_STATE_CHECKPOINT; - if (bi->sequenceNumber == YAFFS_SEQUENCE_BAD_BLOCK) - bi->blockState = state = YAFFS_BLOCK_STATE_DEAD; - - T(YAFFS_TRACE_SCAN_DEBUG, - (TSTR("Block scanning block %d state %d seq %d" TENDSTR), blk, - state, sequenceNumber)); - - - if (state == YAFFS_BLOCK_STATE_CHECKPOINT) { - dev->blocksInCheckpoint++; - - } else if (state == YAFFS_BLOCK_STATE_DEAD) { - T(YAFFS_TRACE_BAD_BLOCKS, - (TSTR("block %d is bad" TENDSTR), blk)); - } else if (state == YAFFS_BLOCK_STATE_EMPTY) { - T(YAFFS_TRACE_SCAN_DEBUG, - (TSTR("Block empty " TENDSTR))); - dev->nErasedBlocks++; - dev->nFreeChunks += dev->nChunksPerBlock; - } else if (state == YAFFS_BLOCK_STATE_NEEDS_SCANNING) { - - /* Determine the highest sequence number */ - if (sequenceNumber >= YAFFS_LOWEST_SEQUENCE_NUMBER && - sequenceNumber < YAFFS_HIGHEST_SEQUENCE_NUMBER) { - - blockIndex[nBlocksToScan].seq = sequenceNumber; - blockIndex[nBlocksToScan].block = blk; - - nBlocksToScan++; - - if (sequenceNumber >= dev->sequenceNumber) - dev->sequenceNumber = sequenceNumber; - } else { - /* TODO: Nasty sequence number! */ - T(YAFFS_TRACE_SCAN, - (TSTR - ("Block scanning block %d has bad sequence number %d" - TENDSTR), blk, sequenceNumber)); - - } - } - } - - T(YAFFS_TRACE_SCAN, - (TSTR("%d blocks to be sorted..." TENDSTR), nBlocksToScan)); - - - - YYIELD(); - - /* Sort the blocks */ -#ifndef CONFIG_YAFFS_USE_OWN_SORT - { - /* Use qsort now. */ - yaffs_qsort(blockIndex, nBlocksToScan, sizeof(yaffs_BlockIndex), ybicmp); - } -#else - { - /* Dungy old bubble sort... */ - - yaffs_BlockIndex temp; - int i; - int j; - - for (i = 0; i < nBlocksToScan; i++) - for (j = i + 1; j < nBlocksToScan; j++) - if (blockIndex[i].seq > blockIndex[j].seq) { - temp = blockIndex[j]; - blockIndex[j] = blockIndex[i]; - blockIndex[i] = temp; - } - } -#endif - - YYIELD(); - - T(YAFFS_TRACE_SCAN, (TSTR("...done" TENDSTR))); - - /* Now scan the blocks looking at the data. */ - startIterator = 0; - endIterator = nBlocksToScan - 1; - T(YAFFS_TRACE_SCAN_DEBUG, - (TSTR("%d blocks to be scanned" TENDSTR), nBlocksToScan)); - - /* For each block.... backwards */ - for (blockIterator = endIterator; !alloc_failed && blockIterator >= startIterator; - blockIterator--) { - /* Cooperative multitasking! This loop can run for so - long that watchdog timers expire. */ - YYIELD(); - - /* get the block to scan in the correct order */ - blk = blockIndex[blockIterator].block; - - bi = yaffs_GetBlockInfo(dev, blk); - - - state = bi->blockState; - - deleted = 0; - - /* For each chunk in each block that needs scanning.... */ - foundChunksInBlock = 0; - for (c = dev->nChunksPerBlock - 1; - !alloc_failed && c >= 0 && - (state == YAFFS_BLOCK_STATE_NEEDS_SCANNING || - state == YAFFS_BLOCK_STATE_ALLOCATING); c--) { - /* Scan backwards... - * Read the tags and decide what to do - */ - - chunk = blk * dev->nChunksPerBlock + c; - - result = yaffs_ReadChunkWithTagsFromNAND(dev, chunk, NULL, - &tags); - - /* Let's have a good look at this chunk... */ - - if (!tags.chunkUsed) { - /* An unassigned chunk in the block. - * If there are used chunks after this one, then - * it is a chunk that was skipped due to failing the erased - * check. Just skip it so that it can be deleted. - * But, more typically, We get here when this is an unallocated - * chunk and his means that either the block is empty or - * this is the one being allocated from - */ - - if (foundChunksInBlock) { - /* This is a chunk that was skipped due to failing the erased check */ - } else if (c == 0) { - /* We're looking at the first chunk in the block so the block is unused */ - state = YAFFS_BLOCK_STATE_EMPTY; - dev->nErasedBlocks++; - } else { - if (state == YAFFS_BLOCK_STATE_NEEDS_SCANNING || - state == YAFFS_BLOCK_STATE_ALLOCATING) { - if (dev->sequenceNumber == bi->sequenceNumber) { - /* this is the block being allocated from */ - - T(YAFFS_TRACE_SCAN, - (TSTR - (" Allocating from %d %d" - TENDSTR), blk, c)); - - state = YAFFS_BLOCK_STATE_ALLOCATING; - dev->allocationBlock = blk; - dev->allocationPage = c; - dev->allocationBlockFinder = blk; - } else { - /* This is a partially written block that is not - * the current allocation block. This block must have - * had a write failure, so set up for retirement. - */ - - /* bi->needsRetiring = 1; ??? TODO */ - bi->gcPrioritise = 1; - - T(YAFFS_TRACE_ALWAYS, - (TSTR("Partially written block %d detected" TENDSTR), - blk)); - } - } - } - - dev->nFreeChunks++; - - } else if (tags.eccResult == YAFFS_ECC_RESULT_UNFIXED) { - T(YAFFS_TRACE_SCAN, - (TSTR(" Unfixed ECC in chunk(%d:%d), chunk ignored"TENDSTR), - blk, c)); - - dev->nFreeChunks++; - - } else if (tags.chunkId > 0) { - /* chunkId > 0 so it is a data chunk... */ - unsigned int endpos; - __u32 chunkBase = - (tags.chunkId - 1) * dev->nDataBytesPerChunk; - - foundChunksInBlock = 1; - - - yaffs_SetChunkBit(dev, blk, c); - bi->pagesInUse++; - - in = yaffs_FindOrCreateObjectByNumber(dev, - tags. - objectId, - YAFFS_OBJECT_TYPE_FILE); - if (!in) { - /* Out of memory */ - alloc_failed = 1; - } - - if (in && - in->variantType == YAFFS_OBJECT_TYPE_FILE - && chunkBase < - in->variant.fileVariant.shrinkSize) { - /* This has not been invalidated by a resize */ - if (!yaffs_PutChunkIntoFile(in, tags.chunkId, - chunk, -1)) { - alloc_failed = 1; - } - - /* File size is calculated by looking at the data chunks if we have not - * seen an object header yet. Stop this practice once we find an object header. - */ - endpos = - (tags.chunkId - - 1) * dev->nDataBytesPerChunk + - tags.byteCount; - - if (!in->valid && /* have not got an object header yet */ - in->variant.fileVariant. - scannedFileSize < endpos) { - in->variant.fileVariant. - scannedFileSize = endpos; - in->variant.fileVariant. - fileSize = - in->variant.fileVariant. - scannedFileSize; - } - - } else if (in) { - /* This chunk has been invalidated by a resize, so delete */ - yaffs_DeleteChunk(dev, chunk, 1, __LINE__); - - } - } else { - /* chunkId == 0, so it is an ObjectHeader. - * Thus, we read in the object header and make the object - */ - foundChunksInBlock = 1; - - yaffs_SetChunkBit(dev, blk, c); - bi->pagesInUse++; - - oh = NULL; - in = NULL; - - if (tags.extraHeaderInfoAvailable) { - in = yaffs_FindOrCreateObjectByNumber - (dev, tags.objectId, - tags.extraObjectType); - if (!in) - alloc_failed = 1; - } - - if (!in || -#ifdef CONFIG_YAFFS_DISABLE_LAZY_LOAD - !in->valid || -#endif - tags.extraShadows || - (!in->valid && - (tags.objectId == YAFFS_OBJECTID_ROOT || - tags.objectId == YAFFS_OBJECTID_LOSTNFOUND))) { - - /* If we don't have valid info then we need to read the chunk - * TODO In future we can probably defer reading the chunk and - * living with invalid data until needed. - */ - - result = yaffs_ReadChunkWithTagsFromNAND(dev, - chunk, - chunkData, - NULL); - - oh = (yaffs_ObjectHeader *) chunkData; - - if (dev->inbandTags) { - /* Fix up the header if they got corrupted by inband tags */ - oh->shadowsObject = oh->inbandShadowsObject; - oh->isShrink = oh->inbandIsShrink; - } - - if (!in) { - in = yaffs_FindOrCreateObjectByNumber(dev, tags.objectId, oh->type); - if (!in) - alloc_failed = 1; - } - - } - - if (!in) { - /* TODO Hoosterman we have a problem! */ - T(YAFFS_TRACE_ERROR, - (TSTR - ("yaffs tragedy: Could not make object for object %d at chunk %d during scan" - TENDSTR), tags.objectId, chunk)); - continue; - } - - if (in->valid) { - /* We have already filled this one. - * We have a duplicate that will be discarded, but - * we first have to suck out resize info if it is a file. - */ - - if ((in->variantType == YAFFS_OBJECT_TYPE_FILE) && - ((oh && - oh->type == YAFFS_OBJECT_TYPE_FILE) || - (tags.extraHeaderInfoAvailable && - tags.extraObjectType == YAFFS_OBJECT_TYPE_FILE))) { - __u32 thisSize = - (oh) ? oh->fileSize : tags. - extraFileLength; - __u32 parentObjectId = - (oh) ? oh-> - parentObjectId : tags. - extraParentObjectId; - - - isShrink = - (oh) ? oh->isShrink : tags. - extraIsShrinkHeader; - - /* If it is deleted (unlinked at start also means deleted) - * we treat the file size as being zeroed at this point. - */ - if (parentObjectId == - YAFFS_OBJECTID_DELETED - || parentObjectId == - YAFFS_OBJECTID_UNLINKED) { - thisSize = 0; - isShrink = 1; - } - - if (isShrink && - in->variant.fileVariant. - shrinkSize > thisSize) { - in->variant.fileVariant. - shrinkSize = - thisSize; - } - - if (isShrink) - bi->hasShrinkHeader = 1; - - } - /* Use existing - destroy this one. */ - yaffs_DeleteChunk(dev, chunk, 1, __LINE__); - - } - - if (!in->valid && in->variantType != - (oh ? oh->type : tags.extraObjectType)) - T(YAFFS_TRACE_ERROR, ( - TSTR("yaffs tragedy: Bad object type, " - TCONT("%d != %d, for object %d at chunk ") - TCONT("%d during scan") - TENDSTR), oh ? - oh->type : tags.extraObjectType, - in->variantType, tags.objectId, - chunk)); - - if (!in->valid && - (tags.objectId == YAFFS_OBJECTID_ROOT || - tags.objectId == - YAFFS_OBJECTID_LOSTNFOUND)) { - /* We only load some info, don't fiddle with directory structure */ - in->valid = 1; - - if (oh) { - in->variantType = oh->type; - - in->yst_mode = oh->yst_mode; -#ifdef CONFIG_YAFFS_WINCE - in->win_atime[0] = oh->win_atime[0]; - in->win_ctime[0] = oh->win_ctime[0]; - in->win_mtime[0] = oh->win_mtime[0]; - in->win_atime[1] = oh->win_atime[1]; - in->win_ctime[1] = oh->win_ctime[1]; - in->win_mtime[1] = oh->win_mtime[1]; -#else - in->yst_uid = oh->yst_uid; - in->yst_gid = oh->yst_gid; - in->yst_atime = oh->yst_atime; - in->yst_mtime = oh->yst_mtime; - in->yst_ctime = oh->yst_ctime; - in->yst_rdev = oh->yst_rdev; - -#endif - } else { - in->variantType = tags.extraObjectType; - in->lazyLoaded = 1; - } - - in->hdrChunk = chunk; - - } else if (!in->valid) { - /* we need to load this info */ - - in->valid = 1; - in->hdrChunk = chunk; - - if (oh) { - in->variantType = oh->type; - - in->yst_mode = oh->yst_mode; -#ifdef CONFIG_YAFFS_WINCE - in->win_atime[0] = oh->win_atime[0]; - in->win_ctime[0] = oh->win_ctime[0]; - in->win_mtime[0] = oh->win_mtime[0]; - in->win_atime[1] = oh->win_atime[1]; - in->win_ctime[1] = oh->win_ctime[1]; - in->win_mtime[1] = oh->win_mtime[1]; -#else - in->yst_uid = oh->yst_uid; - in->yst_gid = oh->yst_gid; - in->yst_atime = oh->yst_atime; - in->yst_mtime = oh->yst_mtime; - in->yst_ctime = oh->yst_ctime; - in->yst_rdev = oh->yst_rdev; -#endif - - if (oh->shadowsObject > 0) - yaffs_HandleShadowedObject(dev, - oh-> - shadowsObject, - 1); - - - yaffs_SetObjectName(in, oh->name); - parent = - yaffs_FindOrCreateObjectByNumber - (dev, oh->parentObjectId, - YAFFS_OBJECT_TYPE_DIRECTORY); - - fileSize = oh->fileSize; - isShrink = oh->isShrink; - equivalentObjectId = oh->equivalentObjectId; - - } else { - in->variantType = tags.extraObjectType; - parent = - yaffs_FindOrCreateObjectByNumber - (dev, tags.extraParentObjectId, - YAFFS_OBJECT_TYPE_DIRECTORY); - fileSize = tags.extraFileLength; - isShrink = tags.extraIsShrinkHeader; - equivalentObjectId = tags.extraEquivalentObjectId; - in->lazyLoaded = 1; - - } - in->dirty = 0; - - if (!parent) - alloc_failed = 1; - - /* directory stuff... - * hook up to parent - */ - - if (parent && parent->variantType == - YAFFS_OBJECT_TYPE_UNKNOWN) { - /* Set up as a directory */ - parent->variantType = - YAFFS_OBJECT_TYPE_DIRECTORY; - YINIT_LIST_HEAD(&parent->variant. - directoryVariant. - children); - } else if (!parent || parent->variantType != - YAFFS_OBJECT_TYPE_DIRECTORY) { - /* Hoosterman, another problem.... - * We're trying to use a non-directory as a directory - */ - - T(YAFFS_TRACE_ERROR, - (TSTR - ("yaffs tragedy: attempting to use non-directory as a directory in scan. Put in lost+found." - TENDSTR))); - parent = dev->lostNFoundDir; - } - - yaffs_AddObjectToDirectory(parent, in); - - itsUnlinked = (parent == dev->deletedDir) || - (parent == dev->unlinkedDir); - - if (isShrink) { - /* Mark the block as having a shrinkHeader */ - bi->hasShrinkHeader = 1; - } - - /* Note re hardlinks. - * Since we might scan a hardlink before its equivalent object is scanned - * we put them all in a list. - * After scanning is complete, we should have all the objects, so we run - * through this list and fix up all the chains. - */ - - switch (in->variantType) { - case YAFFS_OBJECT_TYPE_UNKNOWN: - /* Todo got a problem */ - break; - case YAFFS_OBJECT_TYPE_FILE: - - if (in->variant.fileVariant. - scannedFileSize < fileSize) { - /* This covers the case where the file size is greater - * than where the data is - * This will happen if the file is resized to be larger - * than its current data extents. - */ - in->variant.fileVariant.fileSize = fileSize; - in->variant.fileVariant.scannedFileSize = - in->variant.fileVariant.fileSize; - } - - if (isShrink && - in->variant.fileVariant.shrinkSize > fileSize) { - in->variant.fileVariant.shrinkSize = fileSize; - } - - break; - case YAFFS_OBJECT_TYPE_HARDLINK: - if (!itsUnlinked) { - in->variant.hardLinkVariant.equivalentObjectId = - equivalentObjectId; - in->hardLinks.next = - (struct ylist_head *) hardList; - hardList = in; - } - break; - case YAFFS_OBJECT_TYPE_DIRECTORY: - /* Do nothing */ - break; - case YAFFS_OBJECT_TYPE_SPECIAL: - /* Do nothing */ - break; - case YAFFS_OBJECT_TYPE_SYMLINK: - if (oh) { - in->variant.symLinkVariant.alias = - yaffs_CloneString(oh->alias); - if (!in->variant.symLinkVariant.alias) - alloc_failed = 1; - } - break; - } - - } - - } - - } /* End of scanning for each chunk */ - - if (state == YAFFS_BLOCK_STATE_NEEDS_SCANNING) { - /* If we got this far while scanning, then the block is fully allocated. */ - state = YAFFS_BLOCK_STATE_FULL; - } - - bi->blockState = state; - - /* Now let's see if it was dirty */ - if (bi->pagesInUse == 0 && - !bi->hasShrinkHeader && - bi->blockState == YAFFS_BLOCK_STATE_FULL) { - yaffs_BlockBecameDirty(dev, blk); - } - + yaffs_release_temp_buffer(dev, chunkData, __LINE__); } - - if (altBlockIndex) - YFREE_ALT(blockIndex); - else - YFREE(blockIndex); - - /* Ok, we've done all the scanning. - * Fix up the hard link chains. - * We should now have scanned all the objects, now it's time to add these - * hardlinks. - */ - yaffs_HardlinkFixup(dev, hardList); - - - yaffs_ReleaseTempBuffer(dev, chunkData, __LINE__); - - if (alloc_failed) - return YAFFS_FAIL; - - T(YAFFS_TRACE_SCAN, (TSTR("yaffs_ScanBackwards ends" TENDSTR))); - - return YAFFS_OK; } /*------------------------------ Directory Functions ----------------------------- */ -static void yaffs_VerifyObjectInDirectory(yaffs_Object *obj) +/* + *yaffs_update_parent() handles fixing a directories mtime and ctime when a new + * link (ie. name) is created or deleted in the directory. + * + * ie. + * create dir/a : update dir's mtime/ctime + * rm dir/a: update dir's mtime/ctime + * modify dir/a: don't update dir's mtimme/ctime + * + * This can be handled immediately or defered. Defering helps reduce the number + * of updates when many files in a directory are changed within a brief period. + * + * If the directory updating is defered then yaffs_update_dirty_dirs must be + * called periodically. + */ + +static void yaffs_update_parent(yaffs_obj_t *obj) { - struct ylist_head *lh; - yaffs_Object *listObj; - - int count = 0; - - if (!obj) { - T(YAFFS_TRACE_ALWAYS, (TSTR("No object to verify" TENDSTR))); - YBUG(); + yaffs_dev_t *dev; + if(!obj) return; - } - - if (yaffs_SkipVerification(obj->myDev)) - return; - - if (!obj->parent) { - T(YAFFS_TRACE_ALWAYS, (TSTR("Object does not have parent" TENDSTR))); - YBUG(); - return; - } - - if (obj->parent->variantType != YAFFS_OBJECT_TYPE_DIRECTORY) { - T(YAFFS_TRACE_ALWAYS, (TSTR("Parent is not directory" TENDSTR))); - YBUG(); - } - - /* Iterate through the objects in each hash entry */ +#ifndef CONFIG_YAFFS_WINCE - ylist_for_each(lh, &obj->parent->variant.directoryVariant.children) { - if (lh) { - listObj = ylist_entry(lh, yaffs_Object, siblings); - yaffs_VerifyObject(listObj); - if (obj == listObj) - count++; + dev = obj->my_dev; + obj->dirty = 1; + obj->yst_mtime = obj->yst_ctime = Y_CURRENT_TIME; + if(dev->param.defered_dir_update){ + struct ylist_head *link = &obj->variant.dir_variant.dirty; + + if(ylist_empty(link)){ + ylist_add(link,&dev->dirty_dirs); + T(YAFFS_TRACE_BACKGROUND, (TSTR("Added object %d to dirty directories" TENDSTR),obj->obj_id)); } - } - if (count != 1) { - T(YAFFS_TRACE_ALWAYS, (TSTR("Object in directory %d times" TENDSTR), count)); - YBUG(); - } + } else + yaffs_update_oh(obj, NULL, 0, 0, 0, NULL); +#endif } -static void yaffs_VerifyDirectory(yaffs_Object *directory) +void yaffs_update_dirty_dirs(yaffs_dev_t *dev) { - struct ylist_head *lh; - yaffs_Object *listObj; + struct ylist_head *link; + yaffs_obj_t *obj; + yaffs_dir_s *dS; + yaffs_obj_variant *oV; - if (!directory) { - YBUG(); - return; - } + T(YAFFS_TRACE_BACKGROUND, (TSTR("Update dirty directories" TENDSTR))); - if (yaffs_SkipFullVerification(directory->myDev)) - return; + while(!ylist_empty(&dev->dirty_dirs)){ + link = dev->dirty_dirs.next; + ylist_del_init(link); + + dS=ylist_entry(link,yaffs_dir_s,dirty); + oV = ylist_entry(dS,yaffs_obj_variant,dir_variant); + obj = ylist_entry(oV,yaffs_obj_t,variant); - if (directory->variantType != YAFFS_OBJECT_TYPE_DIRECTORY) { - T(YAFFS_TRACE_ALWAYS, (TSTR("Directory has wrong type: %d" TENDSTR), directory->variantType)); - YBUG(); - } - - /* Iterate through the objects in each hash entry */ + T(YAFFS_TRACE_BACKGROUND, (TSTR("Update directory %d" TENDSTR), obj->obj_id)); - ylist_for_each(lh, &directory->variant.directoryVariant.children) { - if (lh) { - listObj = ylist_entry(lh, yaffs_Object, siblings); - if (listObj->parent != directory) { - T(YAFFS_TRACE_ALWAYS, (TSTR("Object in directory list has wrong parent %p" TENDSTR), listObj->parent)); - YBUG(); - } - yaffs_VerifyObjectInDirectory(listObj); - } + if(obj->dirty) + yaffs_update_oh(obj, NULL, 0, 0, 0, NULL); } } - -static void yaffs_RemoveObjectFromDirectory(yaffs_Object *obj) +static void yaffs_remove_obj_from_dir(yaffs_obj_t *obj) { - yaffs_Device *dev = obj->myDev; - yaffs_Object *parent; + yaffs_dev_t *dev = obj->my_dev; + yaffs_obj_t *parent; - yaffs_VerifyObjectInDirectory(obj); + yaffs_verify_obj_in_dir(obj); parent = obj->parent; - yaffs_VerifyDirectory(parent); + yaffs_verify_dir(parent); - if (dev && dev->removeObjectCallback) - dev->removeObjectCallback(obj); + if (dev && dev->param.remove_obj_fn) + dev->param.remove_obj_fn(obj); ylist_del_init(&obj->siblings); obj->parent = NULL; - - yaffs_VerifyDirectory(parent); + + yaffs_verify_dir(parent); } - -static void yaffs_AddObjectToDirectory(yaffs_Object *directory, - yaffs_Object *obj) +void yaffs_add_obj_to_dir(yaffs_obj_t *directory, + yaffs_obj_t *obj) { if (!directory) { T(YAFFS_TRACE_ALWAYS, @@ -6699,7 +4495,7 @@ static void yaffs_AddObjectToDirectory(yaffs_Object *directory, YBUG(); return; } - if (directory->variantType != YAFFS_OBJECT_TYPE_DIRECTORY) { + if (directory->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) { T(YAFFS_TRACE_ALWAYS, (TSTR ("tragedy: Trying to add an object to a non-directory" @@ -6713,27 +4509,27 @@ static void yaffs_AddObjectToDirectory(yaffs_Object *directory, } - yaffs_VerifyDirectory(directory); + yaffs_verify_dir(directory); - yaffs_RemoveObjectFromDirectory(obj); + yaffs_remove_obj_from_dir(obj); /* Now add it */ - ylist_add(&obj->siblings, &directory->variant.directoryVariant.children); + ylist_add(&obj->siblings, &directory->variant.dir_variant.children); obj->parent = directory; - if (directory == obj->myDev->unlinkedDir - || directory == obj->myDev->deletedDir) { + if (directory == obj->my_dev->unlinked_dir + || directory == obj->my_dev->del_dir) { obj->unlinked = 1; - obj->myDev->nUnlinkedFiles++; - obj->renameAllowed = 0; + obj->my_dev->n_unlinked_files++; + obj->rename_allowed = 0; } - yaffs_VerifyDirectory(directory); - yaffs_VerifyObjectInDirectory(obj); + yaffs_verify_dir(directory); + yaffs_verify_obj_in_dir(obj); } -yaffs_Object *yaffs_FindObjectByName(yaffs_Object *directory, +yaffs_obj_t *yaffs_find_by_name(yaffs_obj_t *directory, const YCHAR *name) { int sum; @@ -6741,7 +4537,7 @@ yaffs_Object *yaffs_FindObjectByName(yaffs_Object *directory, struct ylist_head *i; YCHAR buffer[YAFFS_MAX_NAME_LENGTH + 1]; - yaffs_Object *l; + yaffs_obj_t *l; if (!name) return NULL; @@ -6749,39 +4545,39 @@ yaffs_Object *yaffs_FindObjectByName(yaffs_Object *directory, if (!directory) { T(YAFFS_TRACE_ALWAYS, (TSTR - ("tragedy: yaffs_FindObjectByName: null pointer directory" + ("tragedy: yaffs_find_by_name: null pointer directory" TENDSTR))); YBUG(); return NULL; } - if (directory->variantType != YAFFS_OBJECT_TYPE_DIRECTORY) { + if (directory->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) { T(YAFFS_TRACE_ALWAYS, (TSTR - ("tragedy: yaffs_FindObjectByName: non-directory" TENDSTR))); + ("tragedy: yaffs_find_by_name: non-directory" TENDSTR))); YBUG(); } - sum = yaffs_CalcNameSum(name); + sum = yaffs_calc_name_sum(name); - ylist_for_each(i, &directory->variant.directoryVariant.children) { + ylist_for_each(i, &directory->variant.dir_variant.children) { if (i) { - l = ylist_entry(i, yaffs_Object, siblings); + l = ylist_entry(i, yaffs_obj_t, siblings); if (l->parent != directory) YBUG(); - yaffs_CheckObjectDetailsLoaded(l); + yaffs_check_obj_details_loaded(l); /* Special case for lost-n-found */ - if (l->objectId == YAFFS_OBJECTID_LOSTNFOUND) { + if (l->obj_id == YAFFS_OBJECTID_LOSTNFOUND) { if (yaffs_strcmp(name, YAFFS_LOSTNFOUND_NAME) == 0) return l; - } else if (yaffs_SumCompare(l->sum, sum) || l->hdrChunk <= 0) { + } else if (yaffs_sum_cmp(l->sum, sum) || l->hdr_chunk <= 0) { /* LostnFound chunk called Objxxx * Do a real check */ - yaffs_GetObjectName(l, buffer, - YAFFS_MAX_NAME_LENGTH); + yaffs_get_obj_name(l, buffer, + YAFFS_MAX_NAME_LENGTH + 1); if (yaffs_strncmp(name, buffer, YAFFS_MAX_NAME_LENGTH) == 0) return l; } @@ -6793,31 +4589,31 @@ yaffs_Object *yaffs_FindObjectByName(yaffs_Object *directory, #if 0 -int yaffs_ApplyToDirectoryChildren(yaffs_Object *theDir, - int (*fn) (yaffs_Object *)) +int yaffs_ApplyToDirectoryChildren(yaffs_obj_t *the_dir, + int (*fn) (yaffs_obj_t *)) { struct ylist_head *i; - yaffs_Object *l; + yaffs_obj_t *l; - if (!theDir) { + if (!the_dir) { T(YAFFS_TRACE_ALWAYS, (TSTR - ("tragedy: yaffs_FindObjectByName: null pointer directory" + ("tragedy: yaffs_find_by_name: null pointer directory" TENDSTR))); YBUG(); return YAFFS_FAIL; } - if (theDir->variantType != YAFFS_OBJECT_TYPE_DIRECTORY) { + if (the_dir->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) { T(YAFFS_TRACE_ALWAYS, (TSTR - ("tragedy: yaffs_FindObjectByName: non-directory" TENDSTR))); + ("tragedy: yaffs_find_by_name: non-directory" TENDSTR))); YBUG(); return YAFFS_FAIL; } - ylist_for_each(i, &theDir->variant.directoryVariant.children) { + ylist_for_each(i, &the_dir->variant.dir_variant.children) { if (i) { - l = ylist_entry(i, yaffs_Object, siblings); + l = ylist_entry(i, yaffs_obj_t, siblings); if (l && !fn(l)) return YAFFS_FAIL; } @@ -6832,82 +4628,175 @@ int yaffs_ApplyToDirectoryChildren(yaffs_Object *theDir, * actual object. */ -yaffs_Object *yaffs_GetEquivalentObject(yaffs_Object *obj) +yaffs_obj_t *yaffs_get_equivalent_obj(yaffs_obj_t *obj) { - if (obj && obj->variantType == YAFFS_OBJECT_TYPE_HARDLINK) { + if (obj && obj->variant_type == YAFFS_OBJECT_TYPE_HARDLINK) { /* We want the object id of the equivalent object, not this one */ - obj = obj->variant.hardLinkVariant.equivalentObject; - yaffs_CheckObjectDetailsLoaded(obj); + obj = obj->variant.hardlink_variant.equiv_obj; + yaffs_check_obj_details_loaded(obj); } return obj; } -int yaffs_GetObjectName(yaffs_Object *obj, YCHAR *name, int buffSize) -{ - memset(name, 0, buffSize * sizeof(YCHAR)); - - yaffs_CheckObjectDetailsLoaded(obj); +/* + * A note or two on object names. + * * If the object name is missing, we then make one up in the form objnnn + * + * * ASCII names are stored in the object header's name field from byte zero + * * Unicode names are historically stored starting from byte zero. + * + * Then there are automatic Unicode names... + * The purpose of these is to save names in a way that can be read as + * ASCII or Unicode names as appropriate, thus allowing a Unicode and ASCII + * system to share files. + * + * These automatic unicode are stored slightly differently... + * - If the name can fit in the ASCII character space then they are saved as + * ascii names as per above. + * - If the name needs Unicode then the name is saved in Unicode + * starting at oh->name[1]. - if (obj->objectId == YAFFS_OBJECTID_LOSTNFOUND) { - yaffs_strncpy(name, YAFFS_LOSTNFOUND_NAME, buffSize - 1); - } else if (obj->hdrChunk <= 0) { + */ +static void yaffs_fix_null_name(yaffs_obj_t * obj,YCHAR * name, int buffer_size) +{ + /* Create an object name if we could not find one. */ + if(yaffs_strnlen(name,YAFFS_MAX_NAME_LENGTH) == 0){ YCHAR locName[20]; YCHAR numString[20]; YCHAR *x = &numString[19]; - unsigned v = obj->objectId; + unsigned v = obj->obj_id; numString[19] = 0; - while (v > 0) { + while(v>0){ x--; *x = '0' + (v % 10); v /= 10; } /* make up a name */ yaffs_strcpy(locName, YAFFS_LOSTNFOUND_PREFIX); - yaffs_strcat(locName, x); - yaffs_strncpy(name, locName, buffSize - 1); + yaffs_strcat(locName,x); + yaffs_strncpy(name, locName, buffer_size - 1); + } +} + +static void yaffs_load_name_from_oh(yaffs_dev_t *dev,YCHAR *name, const YCHAR *ohName, int bufferSize) +{ +#ifdef CONFIG_YAFFS_AUTO_UNICODE + if(dev->param.auto_unicode){ + if(*ohName){ + /* It is an ASCII name, so do an ASCII to unicode conversion */ + const char *asciiOhName = (const char *)ohName; + int n = bufferSize - 1; + while(n > 0 && *asciiOhName){ + *name = *asciiOhName; + name++; + asciiOhName++; + n--; + } + } else + yaffs_strncpy(name,ohName+1, bufferSize -1); + } else +#endif + yaffs_strncpy(name, ohName, bufferSize - 1); +} + + +static void yaffs_load_oh_from_name(yaffs_dev_t *dev, YCHAR *ohName, const YCHAR *name) +{ +#ifdef CONFIG_YAFFS_AUTO_UNICODE + + int isAscii; + YCHAR *w; + + if(dev->param.auto_unicode){ + isAscii = 1; + w = name; + + /* Figure out if the name will fit in ascii character set */ + while(isAscii && *w){ + if((*w) & 0xff00) + isAscii = 0; + w++; + } + + if(isAscii){ + /* It is an ASCII name, so do a unicode to ascii conversion */ + char *asciiOhName = (char *)ohName; + int n = YAFFS_MAX_NAME_LENGTH - 1; + while(n > 0 && *name){ + *asciiOhName= *name; + name++; + asciiOhName++; + n--; + } + } else{ + /* It is a unicode name, so save starting at the second YCHAR */ + *ohName = 0; + yaffs_strncpy(ohName+1,name, YAFFS_MAX_NAME_LENGTH -2); + } } + else +#endif + yaffs_strncpy(ohName,name, YAFFS_MAX_NAME_LENGTH - 1); + +} + +int yaffs_get_obj_name(yaffs_obj_t * obj, YCHAR * name, int buffer_size) +{ + memset(name, 0, buffer_size * sizeof(YCHAR)); + + yaffs_check_obj_details_loaded(obj); + + if (obj->obj_id == YAFFS_OBJECTID_LOSTNFOUND) { + yaffs_strncpy(name, YAFFS_LOSTNFOUND_NAME, buffer_size - 1); + } #ifdef CONFIG_YAFFS_SHORT_NAMES_IN_RAM - else if (obj->shortName[0]) - yaffs_strcpy(name, obj->shortName); + else if (obj->short_name[0]) { + yaffs_strcpy(name, obj->short_name); + } #endif - else { + else if(obj->hdr_chunk > 0) { int result; - __u8 *buffer = yaffs_GetTempBuffer(obj->myDev, __LINE__); + __u8 *buffer = yaffs_get_temp_buffer(obj->my_dev, __LINE__); - yaffs_ObjectHeader *oh = (yaffs_ObjectHeader *) buffer; + yaffs_obj_header *oh = (yaffs_obj_header *) buffer; - memset(buffer, 0, obj->myDev->nDataBytesPerChunk); + memset(buffer, 0, obj->my_dev->data_bytes_per_chunk); - if (obj->hdrChunk > 0) { - result = yaffs_ReadChunkWithTagsFromNAND(obj->myDev, - obj->hdrChunk, buffer, + if (obj->hdr_chunk > 0) { + result = yaffs_rd_chunk_tags_nand(obj->my_dev, + obj->hdr_chunk, buffer, NULL); } - yaffs_strncpy(name, oh->name, buffSize - 1); + yaffs_load_name_from_oh(obj->my_dev,name,oh->name,buffer_size); - yaffs_ReleaseTempBuffer(obj->myDev, buffer, __LINE__); + yaffs_release_temp_buffer(obj->my_dev, buffer, __LINE__); } - return yaffs_strlen(name); + yaffs_fix_null_name(obj,name,buffer_size); + + return yaffs_strnlen(name,YAFFS_MAX_NAME_LENGTH); } -int yaffs_GetObjectFileLength(yaffs_Object *obj) + +int yaffs_get_obj_length(yaffs_obj_t *obj) { /* Dereference any hard linking */ - obj = yaffs_GetEquivalentObject(obj); + obj = yaffs_get_equivalent_obj(obj); - if (obj->variantType == YAFFS_OBJECT_TYPE_FILE) - return obj->variant.fileVariant.fileSize; - if (obj->variantType == YAFFS_OBJECT_TYPE_SYMLINK) - return yaffs_strlen(obj->variant.symLinkVariant.alias); - else { + if (obj->variant_type == YAFFS_OBJECT_TYPE_FILE) + return obj->variant.file_variant.file_size; + if (obj->variant_type == YAFFS_OBJECT_TYPE_SYMLINK){ + if(!obj->variant.symlink_variant.alias) + return 0; + return yaffs_strnlen(obj->variant.symlink_variant.alias,YAFFS_MAX_ALIAS_LENGTH); + } else { /* Only a directory should drop through to here */ - return obj->myDev->nDataBytesPerChunk; + return obj->my_dev->data_bytes_per_chunk; } } -int yaffs_GetObjectLinkCount(yaffs_Object *obj) +int yaffs_get_obj_link_count(yaffs_obj_t *obj) { int count = 0; struct ylist_head *i; @@ -6915,24 +4804,24 @@ int yaffs_GetObjectLinkCount(yaffs_Object *obj) if (!obj->unlinked) count++; /* the object itself */ - ylist_for_each(i, &obj->hardLinks) + ylist_for_each(i, &obj->hard_links) count++; /* add the hard links; */ return count; } -int yaffs_GetObjectInode(yaffs_Object *obj) +int yaffs_get_obj_inode(yaffs_obj_t *obj) { - obj = yaffs_GetEquivalentObject(obj); + obj = yaffs_get_equivalent_obj(obj); - return obj->objectId; + return obj->obj_id; } -unsigned yaffs_GetObjectType(yaffs_Object *obj) +unsigned yaffs_get_obj_type(yaffs_obj_t *obj) { - obj = yaffs_GetEquivalentObject(obj); + obj = yaffs_get_equivalent_obj(obj); - switch (obj->variantType) { + switch (obj->variant_type) { case YAFFS_OBJECT_TYPE_FILE: return DT_REG; break; @@ -6960,18 +4849,18 @@ unsigned yaffs_GetObjectType(yaffs_Object *obj) } } -YCHAR *yaffs_GetSymlinkAlias(yaffs_Object *obj) +YCHAR *yaffs_get_symlink_alias(yaffs_obj_t *obj) { - obj = yaffs_GetEquivalentObject(obj); - if (obj->variantType == YAFFS_OBJECT_TYPE_SYMLINK) - return yaffs_CloneString(obj->variant.symLinkVariant.alias); + obj = yaffs_get_equivalent_obj(obj); + if (obj->variant_type == YAFFS_OBJECT_TYPE_SYMLINK) + return yaffs_clone_str(obj->variant.symlink_variant.alias); else - return yaffs_CloneString(_Y("")); + return yaffs_clone_str(_Y("")); } #ifndef CONFIG_YAFFS_WINCE -int yaffs_SetAttributes(yaffs_Object *obj, struct iattr *attr) +int yaffs_set_attribs(yaffs_obj_t *obj, struct iattr *attr) { unsigned int valid = attr->ia_valid; @@ -6990,14 +4879,14 @@ int yaffs_SetAttributes(yaffs_Object *obj, struct iattr *attr) obj->yst_mtime = Y_TIME_CONVERT(attr->ia_mtime); if (valid & ATTR_SIZE) - yaffs_ResizeFile(obj, attr->ia_size); + yaffs_resize_file(obj, attr->ia_size); - yaffs_UpdateObjectHeader(obj, NULL, 1, 0, 0); + yaffs_update_oh(obj, NULL, 1, 0, 0, NULL); return YAFFS_OK; } -int yaffs_GetAttributes(yaffs_Object *obj, struct iattr *attr) +int yaffs_get_attribs(yaffs_obj_t *obj, struct iattr *attr) { unsigned int valid = 0; @@ -7015,7 +4904,7 @@ int yaffs_GetAttributes(yaffs_Object *obj, struct iattr *attr) Y_TIME_CONVERT(attr->ia_mtime) = obj->yst_mtime; valid |= ATTR_MTIME; - attr->ia_size = yaffs_GetFileSize(obj); + attr->ia_size = yaffs_get_file_size(obj); valid |= ATTR_SIZE; attr->ia_valid = valid; @@ -7025,20 +4914,137 @@ int yaffs_GetAttributes(yaffs_Object *obj, struct iattr *attr) #endif + +static int yaffs_do_xattrib_mod(yaffs_obj_t *obj, int set, const YCHAR *name, const void *value, int size, int flags) +{ + yaffs_xattr_mod xmod; + + int result; + + xmod.set = set; + xmod.name = name; + xmod.data = value; + xmod.size = size; + xmod.flags = flags; + xmod.result = -ENOSPC; + + result = yaffs_update_oh(obj, NULL, 0, 0, 0, &xmod); + + if(result > 0) + return xmod.result; + else + return -ENOSPC; +} + +static int yaffs_apply_xattrib_mod(yaffs_obj_t *obj, char *buffer, yaffs_xattr_mod *xmod) +{ + int retval = 0; + int x_offs = sizeof(yaffs_obj_header); + yaffs_dev_t *dev = obj->my_dev; + int x_size = dev->data_bytes_per_chunk - sizeof(yaffs_obj_header); + + char * x_buffer = buffer + x_offs; + + if(xmod->set) + retval = nval_set(x_buffer, x_size, xmod->name, xmod->data, xmod->size, xmod->flags); + else + retval = nval_del(x_buffer, x_size, xmod->name); + + obj->has_xattr = nval_hasvalues(x_buffer, x_size); + obj->xattr_known = 1; + + xmod->result = retval; + + return retval; +} + +static int yaffs_do_xattrib_fetch(yaffs_obj_t *obj, const YCHAR *name, void *value, int size) +{ + char *buffer = NULL; + int result; + yaffs_ext_tags tags; + yaffs_dev_t *dev = obj->my_dev; + int x_offs = sizeof(yaffs_obj_header); + int x_size = dev->data_bytes_per_chunk - sizeof(yaffs_obj_header); + + char * x_buffer; + + int retval = 0; + + if(obj->hdr_chunk < 1) + return -ENODATA; + + /* If we know that the object has no xattribs then don't do all the + * reading and parsing. + */ + if(obj->xattr_known && !obj->has_xattr){ + if(name) + return -ENODATA; + else + return 0; + } + + buffer = (char *) yaffs_get_temp_buffer(dev, __LINE__); + if(!buffer) + return -ENOMEM; + + result = yaffs_rd_chunk_tags_nand(dev,obj->hdr_chunk, (__u8 *)buffer, &tags); + + if(result != YAFFS_OK) + retval = -ENOENT; + else{ + x_buffer = buffer + x_offs; + + if (!obj->xattr_known){ + obj->has_xattr = nval_hasvalues(x_buffer, x_size); + obj->xattr_known = 1; + } + + if(name) + retval = nval_get(x_buffer, x_size, name, value, size); + else + retval = nval_list(x_buffer, x_size, value,size); + } + yaffs_release_temp_buffer(dev,(__u8 *)buffer,__LINE__); + return retval; +} + +int yaffs_set_xattrib(yaffs_obj_t *obj, const YCHAR *name, const void * value, int size, int flags) +{ + return yaffs_do_xattrib_mod(obj, 1, name, value, size, flags); +} + +int yaffs_remove_xattrib(yaffs_obj_t *obj, const YCHAR *name) +{ + return yaffs_do_xattrib_mod(obj, 0, name, NULL, 0, 0); +} + +int yaffs_get_xattrib(yaffs_obj_t *obj, const YCHAR *name, void *value, int size) +{ + return yaffs_do_xattrib_fetch(obj, name, value, size); +} + +int yaffs_list_xattrib(yaffs_obj_t *obj, char *buffer, int size) +{ + return yaffs_do_xattrib_fetch(obj, NULL, buffer,size); +} + + + #if 0 -int yaffs_DumpObject(yaffs_Object *obj) +int yaffs_dump_obj(yaffs_obj_t *obj) { YCHAR name[257]; - yaffs_GetObjectName(obj, name, 256); + yaffs_get_obj_name(obj, name, YAFFS_MAX_NAME_LENGTH + 1); T(YAFFS_TRACE_ALWAYS, (TSTR ("Object %d, inode %d \"%s\"\n dirty %d valid %d serial %d sum %d" " chunk %d type %d size %d\n" - TENDSTR), obj->objectId, yaffs_GetObjectInode(obj), name, - obj->dirty, obj->valid, obj->serial, obj->sum, obj->hdrChunk, - yaffs_GetObjectType(obj), yaffs_GetObjectFileLength(obj))); + TENDSTR), obj->obj_id, yaffs_get_obj_inode(obj), name, + obj->dirty, obj->valid, obj->serial, obj->sum, obj->hdr_chunk, + yaffs_get_obj_type(obj), yaffs_get_obj_length(obj))); return YAFFS_OK; } @@ -7046,72 +5052,74 @@ int yaffs_DumpObject(yaffs_Object *obj) /*---------------------------- Initialisation code -------------------------------------- */ -static int yaffs_CheckDevFunctions(const yaffs_Device *dev) +static int yaffs_cehck_dev_fns(const yaffs_dev_t *dev) { /* Common functions, gotta have */ - if (!dev->eraseBlockInNAND || !dev->initialiseNAND) + if (!dev->param.erase_fn || !dev->param.initialise_flash_fn) return 0; #ifdef CONFIG_YAFFS_YAFFS2 /* Can use the "with tags" style interface for yaffs1 or yaffs2 */ - if (dev->writeChunkWithTagsToNAND && - dev->readChunkWithTagsFromNAND && - !dev->writeChunkToNAND && - !dev->readChunkFromNAND && - dev->markNANDBlockBad && dev->queryNANDBlock) + if (dev->param.write_chunk_tags_fn && + dev->param.read_chunk_tags_fn && + !dev->param.write_chunk_fn && + !dev->param.read_chunk_fn && + dev->param.bad_block_fn && + dev->param.query_block_fn) return 1; #endif /* Can use the "spare" style interface for yaffs1 */ - if (!dev->isYaffs2 && - !dev->writeChunkWithTagsToNAND && - !dev->readChunkWithTagsFromNAND && - dev->writeChunkToNAND && - dev->readChunkFromNAND && - !dev->markNANDBlockBad && !dev->queryNANDBlock) + if (!dev->param.is_yaffs2 && + !dev->param.write_chunk_tags_fn && + !dev->param.read_chunk_tags_fn && + dev->param.write_chunk_fn && + dev->param.read_chunk_fn && + !dev->param.bad_block_fn && + !dev->param.query_block_fn) return 1; - return 0; /* bad */ + return 0; /* bad */ } -static int yaffs_CreateInitialDirectories(yaffs_Device *dev) +static int yaffs_create_initial_dir(yaffs_dev_t *dev) { /* Initialise the unlinked, deleted, root and lost and found directories */ - dev->lostNFoundDir = dev->rootDir = NULL; - dev->unlinkedDir = dev->deletedDir = NULL; + dev->lost_n_found = dev->root_dir = NULL; + dev->unlinked_dir = dev->del_dir = NULL; - dev->unlinkedDir = - yaffs_CreateFakeDirectory(dev, YAFFS_OBJECTID_UNLINKED, S_IFDIR); + dev->unlinked_dir = + yaffs_create_fake_dir(dev, YAFFS_OBJECTID_UNLINKED, S_IFDIR); - dev->deletedDir = - yaffs_CreateFakeDirectory(dev, YAFFS_OBJECTID_DELETED, S_IFDIR); + dev->del_dir = + yaffs_create_fake_dir(dev, YAFFS_OBJECTID_DELETED, S_IFDIR); - dev->rootDir = - yaffs_CreateFakeDirectory(dev, YAFFS_OBJECTID_ROOT, + dev->root_dir = + yaffs_create_fake_dir(dev, YAFFS_OBJECTID_ROOT, YAFFS_ROOT_MODE | S_IFDIR); - dev->lostNFoundDir = - yaffs_CreateFakeDirectory(dev, YAFFS_OBJECTID_LOSTNFOUND, + dev->lost_n_found = + yaffs_create_fake_dir(dev, YAFFS_OBJECTID_LOSTNFOUND, YAFFS_LOSTNFOUND_MODE | S_IFDIR); - if (dev->lostNFoundDir && dev->rootDir && dev->unlinkedDir && dev->deletedDir) { - yaffs_AddObjectToDirectory(dev->rootDir, dev->lostNFoundDir); + if (dev->lost_n_found && dev->root_dir && dev->unlinked_dir && dev->del_dir) { + yaffs_add_obj_to_dir(dev->root_dir, dev->lost_n_found); return YAFFS_OK; } return YAFFS_FAIL; } -int yaffs_GutsInitialise(yaffs_Device *dev) +int yaffs_guts_initialise(yaffs_dev_t *dev) { int init_failed = 0; unsigned x; int bits; - T(YAFFS_TRACE_TRACING, (TSTR("yaffs: yaffs_GutsInitialise()" TENDSTR))); + T(YAFFS_TRACE_TRACING, (TSTR("yaffs: yaffs_guts_initialise()" TENDSTR))); /* Check stuff that must be set */ @@ -7120,52 +5128,52 @@ int yaffs_GutsInitialise(yaffs_Device *dev) return YAFFS_FAIL; } - dev->internalStartBlock = dev->startBlock; - dev->internalEndBlock = dev->endBlock; - dev->blockOffset = 0; - dev->chunkOffset = 0; - dev->nFreeChunks = 0; + dev->internal_start_block = dev->param.start_block; + dev->internal_end_block = dev->param.end_block; + dev->block_offset = 0; + dev->chunk_offset = 0; + dev->n_free_chunks = 0; - dev->gcBlock = -1; + dev->gc_block = 0; - if (dev->startBlock == 0) { - dev->internalStartBlock = dev->startBlock + 1; - dev->internalEndBlock = dev->endBlock + 1; - dev->blockOffset = 1; - dev->chunkOffset = dev->nChunksPerBlock; + if (dev->param.start_block == 0) { + dev->internal_start_block = dev->param.start_block + 1; + dev->internal_end_block = dev->param.end_block + 1; + dev->block_offset = 1; + dev->chunk_offset = dev->param.chunks_per_block; } /* Check geometry parameters. */ - if ((!dev->inbandTags && dev->isYaffs2 && dev->totalBytesPerChunk < 1024) || - (!dev->isYaffs2 && dev->totalBytesPerChunk < 512) || - (dev->inbandTags && !dev->isYaffs2) || - dev->nChunksPerBlock < 2 || - dev->nReservedBlocks < 2 || - dev->internalStartBlock <= 0 || - dev->internalEndBlock <= 0 || - dev->internalEndBlock <= (dev->internalStartBlock + dev->nReservedBlocks + 2)) { /* otherwise it is too small */ + if ((!dev->param.inband_tags && dev->param.is_yaffs2 && dev->param.total_bytes_per_chunk < 1024) || + (!dev->param.is_yaffs2 && dev->param.total_bytes_per_chunk < 512) || + (dev->param.inband_tags && !dev->param.is_yaffs2) || + dev->param.chunks_per_block < 2 || + dev->param.n_reserved_blocks < 2 || + dev->internal_start_block <= 0 || + dev->internal_end_block <= 0 || + dev->internal_end_block <= (dev->internal_start_block + dev->param.n_reserved_blocks + 2)) { /* otherwise it is too small */ T(YAFFS_TRACE_ALWAYS, (TSTR - ("yaffs: NAND geometry problems: chunk size %d, type is yaffs%s, inbandTags %d " - TENDSTR), dev->totalBytesPerChunk, dev->isYaffs2 ? "2" : "", dev->inbandTags)); + ("yaffs: NAND geometry problems: chunk size %d, type is yaffs%s, inband_tags %d " + TENDSTR), dev->param.total_bytes_per_chunk, dev->param.is_yaffs2 ? "2" : "", dev->param.inband_tags)); return YAFFS_FAIL; } - if (yaffs_InitialiseNAND(dev) != YAFFS_OK) { + if (yaffs_init_nand(dev) != YAFFS_OK) { T(YAFFS_TRACE_ALWAYS, (TSTR("yaffs: InitialiseNAND failed" TENDSTR))); return YAFFS_FAIL; } /* Sort out space for inband tags, if required */ - if (dev->inbandTags) - dev->nDataBytesPerChunk = dev->totalBytesPerChunk - sizeof(yaffs_PackedTags2TagsPart); + if (dev->param.inband_tags) + dev->data_bytes_per_chunk = dev->param.total_bytes_per_chunk - sizeof(yaffs_PackedTags2TagsPart); else - dev->nDataBytesPerChunk = dev->totalBytesPerChunk; + dev->data_bytes_per_chunk = dev->param.total_bytes_per_chunk; /* Got the right mix of functions? */ - if (!yaffs_CheckDevFunctions(dev)) { + if (!yaffs_cehck_dev_fns(dev)) { /* Function missing */ T(YAFFS_TRACE_ALWAYS, (TSTR @@ -7175,13 +5183,13 @@ int yaffs_GutsInitialise(yaffs_Device *dev) } /* This is really a compilation check. */ - if (!yaffs_CheckStructures()) { + if (!yaffs_check_structures()) { T(YAFFS_TRACE_ALWAYS, - (TSTR("yaffs_CheckStructures failed\n" TENDSTR))); + (TSTR("yaffs_check_structures failed\n" TENDSTR))); return YAFFS_FAIL; } - if (dev->isMounted) { + if (dev->is_mounted) { T(YAFFS_TRACE_ALWAYS, (TSTR("yaffs: device already mounted\n" TENDSTR))); return YAFFS_FAIL; @@ -7189,59 +5197,62 @@ int yaffs_GutsInitialise(yaffs_Device *dev) /* Finished with most checks. One or two more checks happen later on too. */ - dev->isMounted = 1; + dev->is_mounted = 1; /* OK now calculate a few things for the device */ /* * Calculate all the chunk size manipulation numbers: */ - x = dev->nDataBytesPerChunk; - /* We always use dev->chunkShift and dev->chunkDiv */ - dev->chunkShift = Shifts(x); - x >>= dev->chunkShift; - dev->chunkDiv = x; - /* We only use chunk mask if chunkDiv is 1 */ - dev->chunkMask = (1<<dev->chunkShift) - 1; + x = dev->data_bytes_per_chunk; + /* We always use dev->chunk_shift and dev->chunk_div */ + dev->chunk_shift = Shifts(x); + x >>= dev->chunk_shift; + dev->chunk_div = x; + /* We only use chunk mask if chunk_div is 1 */ + dev->chunk_mask = (1<<dev->chunk_shift) - 1; /* - * Calculate chunkGroupBits. - * We need to find the next power of 2 > than internalEndBlock + * Calculate chunk_grp_bits. + * We need to find the next power of 2 > than internal_end_block */ - x = dev->nChunksPerBlock * (dev->internalEndBlock + 1); + x = dev->param.chunks_per_block * (dev->internal_end_block + 1); bits = ShiftsGE(x); /* Set up tnode width if wide tnodes are enabled. */ - if (!dev->wideTnodesDisabled) { + if (!dev->param.wide_tnodes_disabled) { /* bits must be even so that we end up with 32-bit words */ if (bits & 1) bits++; if (bits < 16) - dev->tnodeWidth = 16; + dev->tnode_width = 16; else - dev->tnodeWidth = bits; + dev->tnode_width = bits; } else - dev->tnodeWidth = 16; + dev->tnode_width = 16; - dev->tnodeMask = (1<<dev->tnodeWidth)-1; + dev->tnode_mask = (1<<dev->tnode_width)-1; /* Level0 Tnodes are 16 bits or wider (if wide tnodes are enabled), * so if the bitwidth of the * chunk range we're using is greater than 16 we need - * to figure out chunk shift and chunkGroupSize + * to figure out chunk shift and chunk_grp_size */ - if (bits <= dev->tnodeWidth) - dev->chunkGroupBits = 0; + if (bits <= dev->tnode_width) + dev->chunk_grp_bits = 0; else - dev->chunkGroupBits = bits - dev->tnodeWidth; + dev->chunk_grp_bits = bits - dev->tnode_width; + dev->tnode_size = (dev->tnode_width * YAFFS_NTNODES_LEVEL0)/8; + if(dev->tnode_size < sizeof(yaffs_tnode_t)) + dev->tnode_size = sizeof(yaffs_tnode_t); - dev->chunkGroupSize = 1 << dev->chunkGroupBits; + dev->chunk_grp_size = 1 << dev->chunk_grp_bits; - if (dev->nChunksPerBlock < dev->chunkGroupSize) { + if (dev->param.chunks_per_block < dev->chunk_grp_size) { /* We have a problem because the soft delete won't work if * the chunk group size > chunks per block. * This can be remedied by using larger "virtual blocks". @@ -7255,85 +5266,89 @@ int yaffs_GutsInitialise(yaffs_Device *dev) /* OK, we've finished verifying the device, lets continue with initialisation */ /* More device initialisation */ - dev->garbageCollections = 0; - dev->passiveGarbageCollections = 0; - dev->currentDirtyChecker = 0; - dev->bufferedBlock = -1; - dev->doingBufferedBlockRewrite = 0; - dev->nDeletedFiles = 0; - dev->nBackgroundDeletions = 0; - dev->nUnlinkedFiles = 0; - dev->eccFixed = 0; - dev->eccUnfixed = 0; - dev->tagsEccFixed = 0; - dev->tagsEccUnfixed = 0; - dev->nErasureFailures = 0; - dev->nErasedBlocks = 0; - dev->isDoingGC = 0; - dev->hasPendingPrioritisedGCs = 1; /* Assume the worst for now, will get fixed on first GC */ + dev->all_gcs = 0; + dev->passive_gc_count = 0; + dev->oldest_dirty_gc_count = 0; + dev->bg_gcs = 0; + dev->gc_block_finder = 0; + dev->buffered_block = -1; + dev->doing_buffered_block_rewrite = 0; + dev->n_deleted_files = 0; + dev->n_bg_deletions = 0; + dev->n_unlinked_files = 0; + dev->n_ecc_fixed = 0; + dev->n_ecc_unfixed = 0; + dev->n_tags_ecc_fixed = 0; + dev->n_tags_ecc_unfixed = 0; + dev->n_erase_failures = 0; + dev->n_erased_blocks = 0; + dev->gc_disable= 0; + dev->has_pending_prioritised_gc = 1; /* Assume the worst for now, will get fixed on first GC */ + YINIT_LIST_HEAD(&dev->dirty_dirs); + dev->oldest_dirty_seq = 0; + dev->oldest_dirty_block = 0; /* Initialise temporary buffers and caches. */ - if (!yaffs_InitialiseTempBuffers(dev)) + if (!yaffs_init_tmp_buffers(dev)) init_failed = 1; - dev->srCache = NULL; - dev->gcCleanupList = NULL; + dev->cache = NULL; + dev->gc_cleanup_list = NULL; if (!init_failed && - dev->nShortOpCaches > 0) { + dev->param.n_caches > 0) { int i; void *buf; - int srCacheBytes = dev->nShortOpCaches * sizeof(yaffs_ChunkCache); + int cacheBytes = dev->param.n_caches * sizeof(yaffs_cache_t); - if (dev->nShortOpCaches > YAFFS_MAX_SHORT_OP_CACHES) - dev->nShortOpCaches = YAFFS_MAX_SHORT_OP_CACHES; + if (dev->param.n_caches > YAFFS_MAX_SHORT_OP_CACHES) + dev->param.n_caches = YAFFS_MAX_SHORT_OP_CACHES; - dev->srCache = YMALLOC(srCacheBytes); + dev->cache = YMALLOC(cacheBytes); - buf = (__u8 *) dev->srCache; + buf = (__u8 *) dev->cache; - if (dev->srCache) - memset(dev->srCache, 0, srCacheBytes); + if (dev->cache) + memset(dev->cache, 0, cacheBytes); - for (i = 0; i < dev->nShortOpCaches && buf; i++) { - dev->srCache[i].object = NULL; - dev->srCache[i].lastUse = 0; - dev->srCache[i].dirty = 0; - dev->srCache[i].data = buf = YMALLOC_DMA(dev->totalBytesPerChunk); + for (i = 0; i < dev->param.n_caches && buf; i++) { + dev->cache[i].object = NULL; + dev->cache[i].last_use = 0; + dev->cache[i].dirty = 0; + dev->cache[i].data = buf = YMALLOC_DMA(dev->param.total_bytes_per_chunk); } if (!buf) init_failed = 1; - dev->srLastUse = 0; + dev->cache_last_use = 0; } - dev->cacheHits = 0; + dev->cache_hits = 0; if (!init_failed) { - dev->gcCleanupList = YMALLOC(dev->nChunksPerBlock * sizeof(__u32)); - if (!dev->gcCleanupList) + dev->gc_cleanup_list = YMALLOC(dev->param.chunks_per_block * sizeof(__u32)); + if (!dev->gc_cleanup_list) init_failed = 1; } - if (dev->isYaffs2) - dev->useHeaderFileSize = 1; + if (dev->param.is_yaffs2) + dev->param.use_header_file_size = 1; - if (!init_failed && !yaffs_InitialiseBlocks(dev)) + if (!init_failed && !yaffs_init_blocks(dev)) init_failed = 1; - yaffs_InitialiseTnodes(dev); - yaffs_InitialiseObjects(dev); + yaffs_init_tnodes_and_objs(dev); - if (!init_failed && !yaffs_CreateInitialDirectories(dev)) + if (!init_failed && !yaffs_create_initial_dir(dev)) init_failed = 1; if (!init_failed) { /* Now scan the flash. */ - if (dev->isYaffs2) { - if (yaffs_CheckpointRestore(dev)) { - yaffs_CheckObjectDetailsLoaded(dev->rootDir); + if (dev->param.is_yaffs2) { + if (yaffs2_checkpt_restore(dev)) { + yaffs_check_obj_details_loaded(dev->root_dir); T(YAFFS_TRACE_ALWAYS, (TSTR("yaffs: restored from checkpoint" TENDSTR))); } else { @@ -7341,128 +5356,129 @@ int yaffs_GutsInitialise(yaffs_Device *dev) /* Clean up the mess caused by an aborted checkpoint load * and scan backwards. */ - yaffs_DeinitialiseBlocks(dev); - yaffs_DeinitialiseTnodes(dev); - yaffs_DeinitialiseObjects(dev); + yaffs_deinit_blocks(dev); + yaffs_deinit_tnodes_and_objs(dev); - dev->nErasedBlocks = 0; - dev->nFreeChunks = 0; - dev->allocationBlock = -1; - dev->allocationPage = -1; - dev->nDeletedFiles = 0; - dev->nUnlinkedFiles = 0; - dev->nBackgroundDeletions = 0; - dev->oldestDirtySequence = 0; + dev->n_erased_blocks = 0; + dev->n_free_chunks = 0; + dev->alloc_block = -1; + dev->alloc_page = -1; + dev->n_deleted_files = 0; + dev->n_unlinked_files = 0; + dev->n_bg_deletions = 0; - if (!init_failed && !yaffs_InitialiseBlocks(dev)) + if (!init_failed && !yaffs_init_blocks(dev)) init_failed = 1; - yaffs_InitialiseTnodes(dev); - yaffs_InitialiseObjects(dev); + yaffs_init_tnodes_and_objs(dev); - if (!init_failed && !yaffs_CreateInitialDirectories(dev)) + if (!init_failed && !yaffs_create_initial_dir(dev)) init_failed = 1; - if (!init_failed && !yaffs_ScanBackwards(dev)) + if (!init_failed && !yaffs2_scan_backwards(dev)) init_failed = 1; } - } else if (!yaffs_Scan(dev)) + } else if (!yaffs1_scan(dev)) init_failed = 1; - yaffs_StripDeletedObjects(dev); + yaffs_strip_deleted_objs(dev); + yaffs_fix_hanging_objs(dev); + if(dev->param.empty_lost_n_found) + yaffs_empty_l_n_f(dev); } if (init_failed) { /* Clean up the mess */ T(YAFFS_TRACE_TRACING, - (TSTR("yaffs: yaffs_GutsInitialise() aborted.\n" TENDSTR))); + (TSTR("yaffs: yaffs_guts_initialise() aborted.\n" TENDSTR))); - yaffs_Deinitialise(dev); + yaffs_deinitialise(dev); return YAFFS_FAIL; } /* Zero out stats */ - dev->nPageReads = 0; - dev->nPageWrites = 0; - dev->nBlockErasures = 0; - dev->nGCCopies = 0; - dev->nRetriedWrites = 0; + dev->n_page_reads = 0; + dev->n_page_writes = 0; + dev->n_erasures = 0; + dev->n_gc_copies = 0; + dev->n_retired_writes = 0; - dev->nRetiredBlocks = 0; + dev->n_retired_blocks = 0; - yaffs_VerifyFreeChunks(dev); - yaffs_VerifyBlocks(dev); + yaffs_verify_free_chunks(dev); + yaffs_verify_blocks(dev); + /* Clean up any aborted checkpoint data */ + if(!dev->is_checkpointed && dev->blocks_in_checkpt > 0) + yaffs2_checkpt_invalidate(dev); T(YAFFS_TRACE_TRACING, - (TSTR("yaffs: yaffs_GutsInitialise() done.\n" TENDSTR))); + (TSTR("yaffs: yaffs_guts_initialise() done.\n" TENDSTR))); return YAFFS_OK; } -void yaffs_Deinitialise(yaffs_Device *dev) +void yaffs_deinitialise(yaffs_dev_t *dev) { - if (dev->isMounted) { + if (dev->is_mounted) { int i; - yaffs_DeinitialiseBlocks(dev); - yaffs_DeinitialiseTnodes(dev); - yaffs_DeinitialiseObjects(dev); - if (dev->nShortOpCaches > 0 && - dev->srCache) { + yaffs_deinit_blocks(dev); + yaffs_deinit_tnodes_and_objs(dev); + if (dev->param.n_caches > 0 && + dev->cache) { - for (i = 0; i < dev->nShortOpCaches; i++) { - if (dev->srCache[i].data) - YFREE(dev->srCache[i].data); - dev->srCache[i].data = NULL; + for (i = 0; i < dev->param.n_caches; i++) { + if (dev->cache[i].data) + YFREE(dev->cache[i].data); + dev->cache[i].data = NULL; } - YFREE(dev->srCache); - dev->srCache = NULL; + YFREE(dev->cache); + dev->cache = NULL; } - YFREE(dev->gcCleanupList); + YFREE(dev->gc_cleanup_list); for (i = 0; i < YAFFS_N_TEMP_BUFFERS; i++) - YFREE(dev->tempBuffer[i].buffer); + YFREE(dev->temp_buffer[i].buffer); - dev->isMounted = 0; + dev->is_mounted = 0; - if (dev->deinitialiseNAND) - dev->deinitialiseNAND(dev); + if (dev->param.deinitialise_flash_fn) + dev->param.deinitialise_flash_fn(dev); } } -static int yaffs_CountFreeChunks(yaffs_Device *dev) +int yaffs_count_free_chunks(yaffs_dev_t *dev) { - int nFree; + int nFree=0; int b; - yaffs_BlockInfo *blk; + yaffs_block_info_t *blk; - for (nFree = 0, b = dev->internalStartBlock; b <= dev->internalEndBlock; - b++) { - blk = yaffs_GetBlockInfo(dev, b); - - switch (blk->blockState) { + blk = dev->block_info; + for (b = dev->internal_start_block; b <= dev->internal_end_block; b++) { + switch (blk->block_state) { case YAFFS_BLOCK_STATE_EMPTY: case YAFFS_BLOCK_STATE_ALLOCATING: case YAFFS_BLOCK_STATE_COLLECTING: case YAFFS_BLOCK_STATE_FULL: nFree += - (dev->nChunksPerBlock - blk->pagesInUse + - blk->softDeletions); + (dev->param.chunks_per_block - blk->pages_in_use + + blk->soft_del_pages); break; default: break; } + blk++; } return nFree; } -int yaffs_GetNumberOfFreeChunks(yaffs_Device *dev) +int yaffs_get_n_free_chunks(yaffs_dev_t *dev) { /* This is what we report to the outside world */ @@ -7472,30 +5488,28 @@ int yaffs_GetNumberOfFreeChunks(yaffs_Device *dev) int i; #if 1 - nFree = dev->nFreeChunks; + nFree = dev->n_free_chunks; #else - nFree = yaffs_CountFreeChunks(dev); + nFree = yaffs_count_free_chunks(dev); #endif - nFree += dev->nDeletedFiles; + nFree += dev->n_deleted_files; /* Now count the number of dirty chunks in the cache and subtract those */ - for (nDirtyCacheChunks = 0, i = 0; i < dev->nShortOpCaches; i++) { - if (dev->srCache[i].dirty) + for (nDirtyCacheChunks = 0, i = 0; i < dev->param.n_caches; i++) { + if (dev->cache[i].dirty) nDirtyCacheChunks++; } nFree -= nDirtyCacheChunks; - nFree -= ((dev->nReservedBlocks + 1) * dev->nChunksPerBlock); + nFree -= ((dev->param.n_reserved_blocks + 1) * dev->param.chunks_per_block); /* Now we figure out how much to reserve for the checkpoint and report that... */ - blocksForCheckpoint = yaffs_CalcCheckpointBlocksRequired(dev) - dev->blocksInCheckpoint; - if (blocksForCheckpoint < 0) - blocksForCheckpoint = 0; + blocksForCheckpoint = yaffs_calc_checkpt_blocks_required(dev); - nFree -= (blocksForCheckpoint * dev->nChunksPerBlock); + nFree -= (blocksForCheckpoint * dev->param.chunks_per_block); if (nFree < 0) nFree = 0; @@ -7504,49 +5518,27 @@ int yaffs_GetNumberOfFreeChunks(yaffs_Device *dev) } -static int yaffs_freeVerificationFailures; - -static void yaffs_VerifyFreeChunks(yaffs_Device *dev) -{ - int counted; - int difference; - - if (yaffs_SkipVerification(dev)) - return; - - counted = yaffs_CountFreeChunks(dev); - - difference = dev->nFreeChunks - counted; - - if (difference) { - T(YAFFS_TRACE_ALWAYS, - (TSTR("Freechunks verification failure %d %d %d" TENDSTR), - dev->nFreeChunks, counted, difference)); - yaffs_freeVerificationFailures++; - } -} /*---------------------------------------- YAFFS test code ----------------------*/ -#define yaffs_CheckStruct(structure, syze, name) \ +#define yaffs_check_struct(structure, syze, name) \ do { \ if (sizeof(structure) != syze) { \ T(YAFFS_TRACE_ALWAYS, (TSTR("%s should be %d but is %d\n" TENDSTR),\ - name, syze, sizeof(structure))); \ + name, syze, (int) sizeof(structure))); \ return YAFFS_FAIL; \ } \ } while (0) -static int yaffs_CheckStructures(void) +static int yaffs_check_structures(void) { -/* yaffs_CheckStruct(yaffs_Tags,8,"yaffs_Tags"); */ -/* yaffs_CheckStruct(yaffs_TagsUnion,8,"yaffs_TagsUnion"); */ -/* yaffs_CheckStruct(yaffs_Spare,16,"yaffs_Spare"); */ -#ifndef CONFIG_YAFFS_TNODE_LIST_DEBUG - yaffs_CheckStruct(yaffs_Tnode, 2 * YAFFS_NTNODES_LEVEL0, "yaffs_Tnode"); -#endif +/* yaffs_check_struct(yaffs_tags_t,8,"yaffs_tags_t"); */ +/* yaffs_check_struct(yaffs_tags_union_t,8,"yaffs_tags_union_t"); */ +/* yaffs_check_struct(yaffs_spare,16,"yaffs_spare"); */ +/* yaffs_check_struct(yaffs_tnode_t, 2 * YAFFS_NTNODES_LEVEL0, "yaffs_tnode_t"); */ + #ifndef CONFIG_YAFFS_WINCE - yaffs_CheckStruct(yaffs_ObjectHeader, 512, "yaffs_ObjectHeader"); + yaffs_check_struct(yaffs_obj_header, 512, "yaffs_obj_header"); #endif return YAFFS_OK; } diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_guts.h b/target/linux/generic/files/fs/yaffs2/yaffs_guts.h index a3b110291d..88075a7c8b 100644 --- a/target/linux/generic/files/fs/yaffs2/yaffs_guts.h +++ b/target/linux/generic/files/fs/yaffs2/yaffs_guts.h @@ -1,7 +1,7 @@ /* * YAFFS: Yet another Flash File System . A NAND-flash specific file system. * - * Copyright (C) 2002-2007 Aleph One Ltd. + * Copyright (C) 2002-2010 Aleph One Ltd. * for Toby Churchill Ltd and Brightstar Engineering * * Created by Charles Manning <charles@aleph1.co.uk> @@ -16,8 +16,9 @@ #ifndef __YAFFS_GUTS_H__ #define __YAFFS_GUTS_H__ -#include "devextras.h" #include "yportenv.h" +#include "devextras.h" +#include "yaffs_list.h" #define YAFFS_OK 1 #define YAFFS_FAIL 0 @@ -52,7 +53,6 @@ #define YAFFS_MAX_CHUNK_ID 0x000FFFFF -#define YAFFS_UNUSED_OBJECT_ID 0x0003FFFF #define YAFFS_ALLOCATION_NOBJECTS 100 #define YAFFS_ALLOCATION_NTNODES 100 @@ -62,8 +62,9 @@ #define YAFFS_OBJECT_SPACE 0x40000 +#define YAFFS_MAX_OBJECT_ID (YAFFS_OBJECT_SPACE -1) -#define YAFFS_CHECKPOINT_VERSION 3 +#define YAFFS_CHECKPOINT_VERSION 4 #ifdef CONFIG_YAFFS_UNICODE #define YAFFS_MAX_NAME_LENGTH 127 @@ -81,12 +82,11 @@ #define YAFFS_OBJECTID_UNLINKED 3 #define YAFFS_OBJECTID_DELETED 4 -/* Sseudo object ids for checkpointing */ +/* Pseudo object ids for checkpointing */ #define YAFFS_OBJECTID_SB_HEADER 0x10 #define YAFFS_OBJECTID_CHECKPOINT_DATA 0x20 #define YAFFS_SEQUENCE_CHECKPOINT_DATA 0x21 -/* */ #define YAFFS_MAX_SHORT_OP_CACHES 20 @@ -113,18 +113,14 @@ /* ChunkCache is used for short read/write operations.*/ typedef struct { - struct yaffs_ObjectStruct *object; - int chunkId; - int lastUse; + struct yaffs_obj_s *object; + int chunk_id; + int last_use; int dirty; - int nBytes; /* Only valid if the cache is dirty */ + int n_bytes; /* Only valid if the cache is dirty */ int locked; /* Can't push out or flush while locked. */ -#ifdef CONFIG_YAFFS_YAFFS2 __u8 *data; -#else - __u8 data[YAFFS_BYTES_PER_CHUNK]; -#endif -} yaffs_ChunkCache; +} yaffs_cache_t; @@ -135,18 +131,18 @@ typedef struct { #ifndef CONFIG_YAFFS_NO_YAFFS1 typedef struct { - unsigned chunkId:20; - unsigned serialNumber:2; - unsigned byteCountLSB:10; - unsigned objectId:18; + unsigned chunk_id:20; + unsigned serial_number:2; + unsigned n_bytes_lsb:10; + unsigned obj_id:18; unsigned ecc:12; - unsigned byteCountMSB:2; -} yaffs_Tags; + unsigned n_bytes_msb:2; +} yaffs_tags_t; typedef union { - yaffs_Tags asTags; - __u8 asBytes[8]; -} yaffs_TagsUnion; + yaffs_tags_t as_tags; + __u8 as_bytes[8]; +} yaffs_tags_union_t; #endif @@ -157,7 +153,7 @@ typedef enum { YAFFS_ECC_RESULT_NO_ERROR, YAFFS_ECC_RESULT_FIXED, YAFFS_ECC_RESULT_UNFIXED -} yaffs_ECCResult; +} yaffs_ecc_result; typedef enum { YAFFS_OBJECT_TYPE_UNKNOWN, @@ -166,64 +162,64 @@ typedef enum { YAFFS_OBJECT_TYPE_DIRECTORY, YAFFS_OBJECT_TYPE_HARDLINK, YAFFS_OBJECT_TYPE_SPECIAL -} yaffs_ObjectType; +} yaffs_obj_type; #define YAFFS_OBJECT_TYPE_MAX YAFFS_OBJECT_TYPE_SPECIAL typedef struct { - unsigned validMarker0; - unsigned chunkUsed; /* Status of the chunk: used or unused */ - unsigned objectId; /* If 0 then this is not part of an object (unused) */ - unsigned chunkId; /* If 0 then this is a header, else a data chunk */ - unsigned byteCount; /* Only valid for data chunks */ + unsigned validity1; + unsigned chunk_used; /* Status of the chunk: used or unused */ + unsigned obj_id; /* If 0 then this is not part of an object (unused) */ + unsigned chunk_id; /* If 0 then this is a header, else a data chunk */ + unsigned n_bytes; /* Only valid for data chunks */ /* The following stuff only has meaning when we read */ - yaffs_ECCResult eccResult; - unsigned blockBad; + yaffs_ecc_result ecc_result; + unsigned block_bad; /* YAFFS 1 stuff */ - unsigned chunkDeleted; /* The chunk is marked deleted */ - unsigned serialNumber; /* Yaffs1 2-bit serial number */ + unsigned is_deleted; /* The chunk is marked deleted */ + unsigned serial_number; /* Yaffs1 2-bit serial number */ /* YAFFS2 stuff */ - unsigned sequenceNumber; /* The sequence number of this block */ + unsigned seq_number; /* The sequence number of this block */ /* Extra info if this is an object header (YAFFS2 only) */ - unsigned extraHeaderInfoAvailable; /* There is extra info available if this is not zero */ - unsigned extraParentObjectId; /* The parent object */ - unsigned extraIsShrinkHeader; /* Is it a shrink header? */ - unsigned extraShadows; /* Does this shadow another object? */ + unsigned extra_available; /* There is extra info available if this is not zero */ + unsigned extra_parent_id; /* The parent object */ + unsigned extra_is_shrink; /* Is it a shrink header? */ + unsigned extra_shadows; /* Does this shadow another object? */ - yaffs_ObjectType extraObjectType; /* What object type? */ + yaffs_obj_type extra_obj_type; /* What object type? */ - unsigned extraFileLength; /* Length if it is a file */ - unsigned extraEquivalentObjectId; /* Equivalent object Id if it is a hard link */ + unsigned extra_length; /* Length if it is a file */ + unsigned extra_equiv_id; /* Equivalent object Id if it is a hard link */ - unsigned validMarker1; + unsigned validty1; -} yaffs_ExtendedTags; +} yaffs_ext_tags; /* Spare structure for YAFFS1 */ typedef struct { - __u8 tagByte0; - __u8 tagByte1; - __u8 tagByte2; - __u8 tagByte3; - __u8 pageStatus; /* set to 0 to delete the chunk */ - __u8 blockStatus; - __u8 tagByte4; - __u8 tagByte5; + __u8 tb0; + __u8 tb1; + __u8 tb2; + __u8 tb3; + __u8 page_status; /* set to 0 to delete the chunk */ + __u8 block_status; + __u8 tb4; + __u8 tb5; __u8 ecc1[3]; - __u8 tagByte6; - __u8 tagByte7; + __u8 tb6; + __u8 tb7; __u8 ecc2[3]; -} yaffs_Spare; +} yaffs_spare; /*Special structure for passing through to mtd */ -struct yaffs_NANDSpare { - yaffs_Spare spare; +struct yaffs_nand_spare { + yaffs_spare spare; int eccres1; int eccres2; }; @@ -234,6 +230,8 @@ typedef enum { YAFFS_BLOCK_STATE_UNKNOWN = 0, YAFFS_BLOCK_STATE_SCANNING, + /* Being scanned */ + YAFFS_BLOCK_STATE_NEEDS_SCANNING, /* The block might have something on it (ie it is allocating or full, perhaps empty) * but it needs to be scanned to determine its true state. @@ -249,67 +247,69 @@ typedef enum { /* This block is partially allocated. * At least one page holds valid data. * This is the one currently being used for page - * allocation. Should never be more than one of these + * allocation. Should never be more than one of these. + * If a block is only partially allocated at mount it is treated as full. */ YAFFS_BLOCK_STATE_FULL, /* All the pages in this block have been allocated. + * If a block was only partially allocated when mounted we treat + * it as fully allocated. */ YAFFS_BLOCK_STATE_DIRTY, - /* All pages have been allocated and deleted. + /* The block was full and now all chunks have been deleted. * Erase me, reuse me. */ YAFFS_BLOCK_STATE_CHECKPOINT, - /* This block is assigned to holding checkpoint data. - */ + /* This block is assigned to holding checkpoint data. */ YAFFS_BLOCK_STATE_COLLECTING, /* This block is being garbage collected */ YAFFS_BLOCK_STATE_DEAD /* This block has failed and is not in use */ -} yaffs_BlockState; +} yaffs_block_state_t; #define YAFFS_NUMBER_OF_BLOCK_STATES (YAFFS_BLOCK_STATE_DEAD + 1) typedef struct { - int softDeletions:10; /* number of soft deleted pages */ - int pagesInUse:10; /* number of pages in use */ - unsigned blockState:4; /* One of the above block states. NB use unsigned because enum is sometimes an int */ - __u32 needsRetiring:1; /* Data has failed on this block, need to get valid data off */ + int soft_del_pages:10; /* number of soft deleted pages */ + int pages_in_use:10; /* number of pages in use */ + unsigned block_state:4; /* One of the above block states. NB use unsigned because enum is sometimes an int */ + __u32 needs_retiring:1; /* Data has failed on this block, need to get valid data off */ /* and retire the block. */ - __u32 skipErasedCheck:1; /* If this is set we can skip the erased check on this block */ - __u32 gcPrioritise:1; /* An ECC check or blank check has failed on this block. + __u32 skip_erased_check:1; /* If this is set we can skip the erased check on this block */ + __u32 gc_prioritise:1; /* An ECC check or blank check has failed on this block. It should be prioritised for GC */ - __u32 chunkErrorStrikes:3; /* How many times we've had ecc etc failures on this block and tried to reuse it */ + __u32 chunk_error_strikes:3; /* How many times we've had ecc etc failures on this block and tried to reuse it */ #ifdef CONFIG_YAFFS_YAFFS2 - __u32 hasShrinkHeader:1; /* This block has at least one shrink object header */ - __u32 sequenceNumber; /* block sequence number for yaffs2 */ + __u32 has_shrink_hdr:1; /* This block has at least one shrink object header */ + __u32 seq_number; /* block sequence number for yaffs2 */ #endif -} yaffs_BlockInfo; +} yaffs_block_info_t; /* -------------------------- Object structure -------------------------------*/ /* This is the object structure as stored on NAND */ typedef struct { - yaffs_ObjectType type; + yaffs_obj_type type; /* Apply to everything */ - int parentObjectId; - __u16 sum__NoLongerUsed; /* checksum of name. No longer used */ + int parent_obj_id; + __u16 sum_no_longer_used; /* checksum of name. No longer used */ YCHAR name[YAFFS_MAX_NAME_LENGTH + 1]; /* The following apply to directories, files, symlinks - not hard links */ __u32 yst_mode; /* protection */ #ifdef CONFIG_YAFFS_WINCE - __u32 notForWinCE[5]; + __u32 not_for_wince[5]; #else __u32 yst_uid; __u32 yst_gid; @@ -319,10 +319,10 @@ typedef struct { #endif /* File size applies to files only */ - int fileSize; + int file_size; /* Equivalent object id applies to hard links only. */ - int equivalentObjectId; + int equiv_id; /* Alias is for symlinks only. */ YCHAR alias[YAFFS_MAX_ALIAS_LENGTH + 1]; @@ -334,40 +334,29 @@ typedef struct { __u32 win_atime[2]; __u32 win_mtime[2]; #else - __u32 roomToGrow[6]; + __u32 room_to_grow[6]; #endif - __u32 inbandShadowsObject; - __u32 inbandIsShrink; + __u32 inband_shadowed_obj_id; + __u32 inband_is_shrink; - __u32 reservedSpace[2]; - int shadowsObject; /* This object header shadows the specified object if > 0 */ + __u32 reserved[2]; + int shadows_obj; /* This object header shadows the specified object if > 0 */ - /* isShrink applies to object headers written when we shrink the file (ie resize) */ - __u32 isShrink; + /* is_shrink applies to object headers written when we shrink the file (ie resize) */ + __u32 is_shrink; -} yaffs_ObjectHeader; +} yaffs_obj_header; /*--------------------------- Tnode -------------------------- */ -union yaffs_Tnode_union { -#ifdef CONFIG_YAFFS_TNODE_LIST_DEBUG - union yaffs_Tnode_union *internal[YAFFS_NTNODES_INTERNAL + 1]; -#else - union yaffs_Tnode_union *internal[YAFFS_NTNODES_INTERNAL]; -#endif -/* __u16 level0[YAFFS_NTNODES_LEVEL0]; */ +union yaffs_tnode_union { + union yaffs_tnode_union *internal[YAFFS_NTNODES_INTERNAL]; }; -typedef union yaffs_Tnode_union yaffs_Tnode; - -struct yaffs_TnodeList_struct { - struct yaffs_TnodeList_struct *next; - yaffs_Tnode *tnodes; -}; +typedef union yaffs_tnode_union yaffs_tnode_t; -typedef struct yaffs_TnodeList_struct yaffs_TnodeList; /*------------------------ Object -----------------------------*/ /* An object can be one of: @@ -378,82 +367,85 @@ typedef struct yaffs_TnodeList_struct yaffs_TnodeList; */ typedef struct { - __u32 fileSize; - __u32 scannedFileSize; - __u32 shrinkSize; - int topLevel; - yaffs_Tnode *top; -} yaffs_FileStructure; + __u32 file_size; + __u32 scanned_size; + __u32 shrink_size; + int top_level; + yaffs_tnode_t *top; +} yaffs_file_s; typedef struct { struct ylist_head children; /* list of child links */ -} yaffs_DirectoryStructure; + struct ylist_head dirty; /* Entry for list of dirty directories */ +} yaffs_dir_s; typedef struct { YCHAR *alias; -} yaffs_SymLinkStructure; +} yaffs_symlink_t; typedef struct { - struct yaffs_ObjectStruct *equivalentObject; - __u32 equivalentObjectId; -} yaffs_HardLinkStructure; + struct yaffs_obj_s *equiv_obj; + __u32 equiv_id; +} yaffs_hard_link_s; typedef union { - yaffs_FileStructure fileVariant; - yaffs_DirectoryStructure directoryVariant; - yaffs_SymLinkStructure symLinkVariant; - yaffs_HardLinkStructure hardLinkVariant; -} yaffs_ObjectVariant; + yaffs_file_s file_variant; + yaffs_dir_s dir_variant; + yaffs_symlink_t symlink_variant; + yaffs_hard_link_s hardlink_variant; +} yaffs_obj_variant; + -struct yaffs_ObjectStruct { + +struct yaffs_obj_s { __u8 deleted:1; /* This should only apply to unlinked files. */ - __u8 softDeleted:1; /* it has also been soft deleted */ + __u8 soft_del:1; /* it has also been soft deleted */ __u8 unlinked:1; /* An unlinked file. The file should be in the unlinked directory.*/ __u8 fake:1; /* A fake object has no presence on NAND. */ - __u8 renameAllowed:1; /* Some objects are not allowed to be renamed. */ - __u8 unlinkAllowed:1; + __u8 rename_allowed:1; /* Some objects are not allowed to be renamed. */ + __u8 unlink_allowed:1; __u8 dirty:1; /* the object needs to be written to flash */ __u8 valid:1; /* When the file system is being loaded up, this * object might be created before the data * is available (ie. file data records appear before the header). */ - __u8 lazyLoaded:1; /* This object has been lazy loaded and is missing some detail */ + __u8 lazy_loaded:1; /* This object has been lazy loaded and is missing some detail */ - __u8 deferedFree:1; /* For Linux kernel. Object is removed from NAND, but is + __u8 defered_free:1; /* For Linux kernel. Object is removed from NAND, but is * still in the inode cache. Free of object is defered. * until the inode is released. */ - __u8 beingCreated:1; /* This object is still being created so skip some checks. */ + __u8 being_created:1; /* This object is still being created so skip some checks. */ + __u8 is_shadowed:1; /* This object is shadowed on the way to being renamed. */ + + __u8 xattr_known:1; /* We know if this has object has xattribs or not. */ + __u8 has_xattr:1; /* This object has xattribs. Valid if xattr_known. */ __u8 serial; /* serial number of chunk in NAND. Cached here */ __u16 sum; /* sum of the name to speed searching */ - struct yaffs_DeviceStruct *myDev; /* The device I'm on */ + struct yaffs_dev_s *my_dev; /* The device I'm on */ - struct ylist_head hashLink; /* list of objects in this hash bucket */ + struct ylist_head hash_link; /* list of objects in this hash bucket */ - struct ylist_head hardLinks; /* all the equivalent hard linked objects */ + struct ylist_head hard_links; /* all the equivalent hard linked objects */ /* directory structure stuff */ /* also used for linking up the free list */ - struct yaffs_ObjectStruct *parent; + struct yaffs_obj_s *parent; struct ylist_head siblings; /* Where's my object header in NAND? */ - int hdrChunk; + int hdr_chunk; - int nDataChunks; /* Number of data chunks attached to the file. */ + int n_data_chunks; /* Number of data chunks attached to the file. */ - __u32 objectId; /* the object id value */ + __u32 obj_id; /* the object id value */ __u32 yst_mode; #ifdef CONFIG_YAFFS_SHORT_NAMES_IN_RAM - YCHAR shortName[YAFFS_SHORT_NAME_LENGTH + 1]; -#endif - -#ifndef __KERNEL__ - __u32 inUse; + YCHAR short_name[YAFFS_SHORT_NAME_LENGTH + 1]; #endif #ifdef CONFIG_YAFFS_WINCE @@ -470,53 +462,43 @@ struct yaffs_ObjectStruct { __u32 yst_rdev; -#ifdef __KERNEL__ - struct inode *myInode; + void *my_inode; -#endif - - yaffs_ObjectType variantType; - - yaffs_ObjectVariant variant; - -}; + yaffs_obj_type variant_type; -typedef struct yaffs_ObjectStruct yaffs_Object; + yaffs_obj_variant variant; -struct yaffs_ObjectList_struct { - yaffs_Object *objects; - struct yaffs_ObjectList_struct *next; }; -typedef struct yaffs_ObjectList_struct yaffs_ObjectList; +typedef struct yaffs_obj_s yaffs_obj_t; typedef struct { struct ylist_head list; int count; -} yaffs_ObjectBucket; +} yaffs_obj_bucket; -/* yaffs_CheckpointObject holds the definition of an object as dumped +/* yaffs_checkpt_obj_t holds the definition of an object as dumped * by checkpointing. */ typedef struct { - int structType; - __u32 objectId; - __u32 parentId; - int hdrChunk; - yaffs_ObjectType variantType:3; + int struct_type; + __u32 obj_id; + __u32 parent_id; + int hdr_chunk; + yaffs_obj_type variant_type:3; __u8 deleted:1; - __u8 softDeleted:1; + __u8 soft_del:1; __u8 unlinked:1; __u8 fake:1; - __u8 renameAllowed:1; - __u8 unlinkAllowed:1; + __u8 rename_allowed:1; + __u8 unlink_allowed:1; __u8 serial; - int nDataChunks; - __u32 fileSizeOrEquivalentObjectId; -} yaffs_CheckpointObject; + int n_data_chunks; + __u32 size_or_equiv_obj; +} yaffs_checkpt_obj_t; /*--------------------- Temporary buffers ---------------- * @@ -526,379 +508,462 @@ typedef struct { typedef struct { __u8 *buffer; int line; /* track from whence this buffer was allocated */ - int maxLine; -} yaffs_TempBuffer; + int max_line; +} yaffs_buffer_t; /*----------------- Device ---------------------------------*/ -struct yaffs_DeviceStruct { - struct ylist_head devList; - const char *name; - - /* Entry parameters set up way early. Yaffs sets up the rest.*/ - int nDataBytesPerChunk; /* Should be a power of 2 >= 512 */ - int nChunksPerBlock; /* does not need to be a power of 2 */ - int spareBytesPerChunk; /* spare area size */ - int startBlock; /* Start block we're allowed to use */ - int endBlock; /* End block we're allowed to use */ - int nReservedBlocks; /* We want this tuneable so that we can reduce */ - /* reserved blocks on NOR and RAM. */ +struct yaffs_param_s { + const YCHAR *name; - /* Stuff used by the shared space checkpointing mechanism */ - /* If this value is zero, then this mechanism is disabled */ + /* + * Entry parameters set up way early. Yaffs sets up the rest. + * The structure should be zeroed out before use so that unused + * and defualt values are zero. + */ -/* int nCheckpointReservedBlocks; */ /* Blocks to reserve for checkpoint data */ + int inband_tags; /* Use unband tags */ + __u32 total_bytes_per_chunk; /* Should be >= 512, does not need to be a power of 2 */ + int chunks_per_block; /* does not need to be a power of 2 */ + int spare_bytes_per_chunk; /* spare area size */ + int start_block; /* Start block we're allowed to use */ + int end_block; /* End block we're allowed to use */ + int n_reserved_blocks; /* We want this tuneable so that we can reduce */ + /* reserved blocks on NOR and RAM. */ - int nShortOpCaches; /* If <= 0, then short op caching is disabled, else - * the number of short op caches (don't use too many) + int n_caches; /* If <= 0, then short op caching is disabled, else + * the number of short op caches (don't use too many). + * 10 to 20 is a good bet. */ + int use_nand_ecc; /* Flag to decide whether or not to use NANDECC on data (yaffs1) */ + int no_tags_ecc; /* Flag to decide whether or not to do ECC on packed tags (yaffs2) */ - int useHeaderFileSize; /* Flag to determine if we should use file sizes from the header */ + int is_yaffs2; /* Use yaffs2 mode on this device */ - int useNANDECC; /* Flag to decide whether or not to use NANDECC */ + int empty_lost_n_found; /* Auto-empty lost+found directory on mount */ - void *genericDevice; /* Pointer to device context - * On an mtd this holds the mtd pointer. - */ - void *superBlock; + int refresh_period; /* How often we should check to do a block refresh */ + + /* Checkpoint control. Can be set before or after initialisation */ + __u8 skip_checkpt_rd; + __u8 skip_checkpt_wr; + + int enable_xattr; /* Enable xattribs */ /* NAND access functions (Must be set before calling YAFFS)*/ - int (*writeChunkToNAND) (struct yaffs_DeviceStruct *dev, - int chunkInNAND, const __u8 *data, - const yaffs_Spare *spare); - int (*readChunkFromNAND) (struct yaffs_DeviceStruct *dev, - int chunkInNAND, __u8 *data, - yaffs_Spare *spare); - int (*eraseBlockInNAND) (struct yaffs_DeviceStruct *dev, - int blockInNAND); - int (*initialiseNAND) (struct yaffs_DeviceStruct *dev); - int (*deinitialiseNAND) (struct yaffs_DeviceStruct *dev); + int (*write_chunk_fn) (struct yaffs_dev_s *dev, + int nand_chunk, const __u8 *data, + const yaffs_spare *spare); + int (*read_chunk_fn) (struct yaffs_dev_s *dev, + int nand_chunk, __u8 *data, + yaffs_spare *spare); + int (*erase_fn) (struct yaffs_dev_s *dev, + int flash_block); + int (*initialise_flash_fn) (struct yaffs_dev_s *dev); + int (*deinitialise_flash_fn) (struct yaffs_dev_s *dev); #ifdef CONFIG_YAFFS_YAFFS2 - int (*writeChunkWithTagsToNAND) (struct yaffs_DeviceStruct *dev, - int chunkInNAND, const __u8 *data, - const yaffs_ExtendedTags *tags); - int (*readChunkWithTagsFromNAND) (struct yaffs_DeviceStruct *dev, - int chunkInNAND, __u8 *data, - yaffs_ExtendedTags *tags); - int (*markNANDBlockBad) (struct yaffs_DeviceStruct *dev, int blockNo); - int (*queryNANDBlock) (struct yaffs_DeviceStruct *dev, int blockNo, - yaffs_BlockState *state, __u32 *sequenceNumber); + int (*write_chunk_tags_fn) (struct yaffs_dev_s *dev, + int nand_chunk, const __u8 *data, + const yaffs_ext_tags *tags); + int (*read_chunk_tags_fn) (struct yaffs_dev_s *dev, + int nand_chunk, __u8 *data, + yaffs_ext_tags *tags); + int (*bad_block_fn) (struct yaffs_dev_s *dev, int block_no); + int (*query_block_fn) (struct yaffs_dev_s *dev, int block_no, + yaffs_block_state_t *state, __u32 *seq_number); #endif - int isYaffs2; - - /* The removeObjectCallback function must be supplied by OS flavours that - * need it. The Linux kernel does not use this, but yaffs direct does use - * it to implement the faster readdir + /* The remove_obj_fn function must be supplied by OS flavours that + * need it. + * yaffs direct uses it to implement the faster readdir. + * Linux uses it to protect the directory during unlocking. */ - void (*removeObjectCallback)(struct yaffs_ObjectStruct *obj); + void (*remove_obj_fn)(struct yaffs_obj_s *obj); + + /* Callback to mark the superblock dirty */ + void (*sb_dirty_fn)(struct yaffs_dev_s *dev); + + /* Callback to control garbage collection. */ + unsigned (*gc_control)(struct yaffs_dev_s *dev); + + /* Debug control flags. Don't use unless you know what you're doing */ + int use_header_file_size; /* Flag to determine if we should use file sizes from the header */ + int disable_lazy_load; /* Disable lazy loading on this device */ + int wide_tnodes_disabled; /* Set to disable wide tnodes */ + int disable_soft_del; /* yaffs 1 only: Set to disable the use of softdeletion. */ + + int defered_dir_update; /* Set to defer directory updates */ + +#ifdef CONFIG_YAFFS_AUTO_UNICODE + int auto_unicode; +#endif + int always_check_erased; /* Force chunk erased check always on */ +}; - /* Callback to mark the superblock dirsty */ - void (*markSuperBlockDirty)(void *superblock); +typedef struct yaffs_param_s yaffs_param_t; - int wideTnodesDisabled; /* Set to disable wide tnodes */ +struct yaffs_dev_s { + struct yaffs_param_s param; - YCHAR *pathDividers; /* String of legal path dividers */ + /* Context storage. Holds extra OS specific data for this device */ + void *os_context; + void *driver_context; - /* End of stuff that must be set before initialisation. */ - - /* Checkpoint control. Can be set before or after initialisation */ - __u8 skipCheckpointRead; - __u8 skipCheckpointWrite; + struct ylist_head dev_list; /* Runtime parameters. Set up by YAFFS. */ + int data_bytes_per_chunk; - __u16 chunkGroupBits; /* 0 for devices <= 32MB. else log2(nchunks) - 16 */ - __u16 chunkGroupSize; /* == 2^^chunkGroupBits */ + /* Non-wide tnode stuff */ + __u16 chunk_grp_bits; /* Number of bits that need to be resolved if + * the tnodes are not wide enough. + */ + __u16 chunk_grp_size; /* == 2^^chunk_grp_bits */ /* Stuff to support wide tnodes */ - __u32 tnodeWidth; - __u32 tnodeMask; + __u32 tnode_width; + __u32 tnode_mask; + __u32 tnode_size; /* Stuff for figuring out file offset to chunk conversions */ - __u32 chunkShift; /* Shift value */ - __u32 chunkDiv; /* Divisor after shifting: 1 for power-of-2 sizes */ - __u32 chunkMask; /* Mask to use for power-of-2 case */ - - /* Stuff to handle inband tags */ - int inbandTags; - __u32 totalBytesPerChunk; + __u32 chunk_shift; /* Shift value */ + __u32 chunk_div; /* Divisor after shifting: 1 for power-of-2 sizes */ + __u32 chunk_mask; /* Mask to use for power-of-2 case */ -#ifdef __KERNEL__ - - struct semaphore sem; /* Semaphore for waiting on erasure.*/ - struct semaphore grossLock; /* Gross locking semaphore */ - __u8 *spareBuffer; /* For mtdif2 use. Don't know the size of the buffer - * at compile time so we have to allocate it. - */ - void (*putSuperFunc) (struct super_block *sb); -#endif - int isMounted; - int isCheckpointed; + int is_mounted; + int read_only; + int is_checkpointed; /* Stuff to support block offsetting to support start block zero */ - int internalStartBlock; - int internalEndBlock; - int blockOffset; - int chunkOffset; + int internal_start_block; + int internal_end_block; + int block_offset; + int chunk_offset; /* Runtime checkpointing stuff */ - int checkpointPageSequence; /* running sequence number of checkpoint pages */ - int checkpointByteCount; - int checkpointByteOffset; - __u8 *checkpointBuffer; - int checkpointOpenForWrite; - int blocksInCheckpoint; - int checkpointCurrentChunk; - int checkpointCurrentBlock; - int checkpointNextBlock; - int *checkpointBlockList; - int checkpointMaxBlocks; - __u32 checkpointSum; - __u32 checkpointXor; - - int nCheckpointBlocksRequired; /* Number of blocks needed to store current checkpoint set */ + int checkpt_page_seq; /* running sequence number of checkpoint pages */ + int checkpt_byte_count; + int checkpt_byte_offs; + __u8 *checkpt_buffer; + int checkpt_open_write; + int blocks_in_checkpt; + int checkpt_cur_chunk; + int checkpt_cur_block; + int checkpt_next_block; + int *checkpt_block_list; + int checkpt_max_blocks; + __u32 checkpt_sum; + __u32 checkpt_xor; + + int checkpoint_blocks_required; /* Number of blocks needed to store current checkpoint set */ /* Block Info */ - yaffs_BlockInfo *blockInfo; - __u8 *chunkBits; /* bitmap of chunks in use */ - unsigned blockInfoAlt:1; /* was allocated using alternative strategy */ - unsigned chunkBitsAlt:1; /* was allocated using alternative strategy */ - int chunkBitmapStride; /* Number of bytes of chunkBits per block. - * Must be consistent with nChunksPerBlock. + yaffs_block_info_t *block_info; + __u8 *chunk_bits; /* bitmap of chunks in use */ + unsigned block_info_alt:1; /* was allocated using alternative strategy */ + unsigned chunk_bits_alt:1; /* was allocated using alternative strategy */ + int chunk_bit_stride; /* Number of bytes of chunk_bits per block. + * Must be consistent with chunks_per_block. */ - int nErasedBlocks; - int allocationBlock; /* Current block being allocated off */ - __u32 allocationPage; - int allocationBlockFinder; /* Used to search for next allocation block */ - - /* Runtime state */ - int nTnodesCreated; - yaffs_Tnode *freeTnodes; - int nFreeTnodes; - yaffs_TnodeList *allocatedTnodeList; - - int isDoingGC; - int gcBlock; - int gcChunk; - - int nObjectsCreated; - yaffs_Object *freeObjects; - int nFreeObjects; + int n_erased_blocks; + int alloc_block; /* Current block being allocated off */ + __u32 alloc_page; + int alloc_block_finder; /* Used to search for next allocation block */ - int nHardLinks; + /* Object and Tnode memory management */ + void *allocator; + int n_obj; + int n_tnodes; - yaffs_ObjectList *allocatedObjectList; + int n_hardlinks; - yaffs_ObjectBucket objectBucket[YAFFS_NOBJECT_BUCKETS]; + yaffs_obj_bucket obj_bucket[YAFFS_NOBJECT_BUCKETS]; + __u32 bucket_finder; - int nFreeChunks; + int n_free_chunks; - int currentDirtyChecker; /* Used to find current dirtiest block */ + /* Garbage collection control */ + __u32 *gc_cleanup_list; /* objects to delete at the end of a GC. */ + __u32 n_clean_ups; - __u32 *gcCleanupList; /* objects to delete at the end of a GC. */ - int nonAggressiveSkip; /* GC state/mode */ - - /* Statistcs */ - int nPageWrites; - int nPageReads; - int nBlockErasures; - int nErasureFailures; - int nGCCopies; - int garbageCollections; - int passiveGarbageCollections; - int nRetriedWrites; - int nRetiredBlocks; - int eccFixed; - int eccUnfixed; - int tagsEccFixed; - int tagsEccUnfixed; - int nDeletions; - int nUnmarkedDeletions; - - int hasPendingPrioritisedGCs; /* We think this device might have pending prioritised gcs */ + unsigned has_pending_prioritised_gc; /* We think this device might have pending prioritised gcs */ + unsigned gc_disable; + unsigned gc_block_finder; + unsigned gc_dirtiest; + unsigned gc_pages_in_use; + unsigned gc_not_done; + unsigned gc_block; + unsigned gc_chunk; + unsigned gc_skip; /* Special directories */ - yaffs_Object *rootDir; - yaffs_Object *lostNFoundDir; + yaffs_obj_t *root_dir; + yaffs_obj_t *lost_n_found; /* Buffer areas for storing data to recover from write failures TODO - * __u8 bufferedData[YAFFS_CHUNKS_PER_BLOCK][YAFFS_BYTES_PER_CHUNK]; - * yaffs_Spare bufferedSpare[YAFFS_CHUNKS_PER_BLOCK]; + * __u8 buffered_data[YAFFS_CHUNKS_PER_BLOCK][YAFFS_BYTES_PER_CHUNK]; + * yaffs_spare buffered_spare[YAFFS_CHUNKS_PER_BLOCK]; */ - int bufferedBlock; /* Which block is buffered here? */ - int doingBufferedBlockRewrite; + int buffered_block; /* Which block is buffered here? */ + int doing_buffered_block_rewrite; - yaffs_ChunkCache *srCache; - int srLastUse; - - int cacheHits; + yaffs_cache_t *cache; + int cache_last_use; /* Stuff for background deletion and unlinked files.*/ - yaffs_Object *unlinkedDir; /* Directory where unlinked and deleted files live. */ - yaffs_Object *deletedDir; /* Directory where deleted objects are sent to disappear. */ - yaffs_Object *unlinkedDeletion; /* Current file being background deleted.*/ - int nDeletedFiles; /* Count of files awaiting deletion;*/ - int nUnlinkedFiles; /* Count of unlinked files. */ - int nBackgroundDeletions; /* Count of background deletions. */ - + yaffs_obj_t *unlinked_dir; /* Directory where unlinked and deleted files live. */ + yaffs_obj_t *del_dir; /* Directory where deleted objects are sent to disappear. */ + yaffs_obj_t *unlinked_deletion; /* Current file being background deleted.*/ + int n_deleted_files; /* Count of files awaiting deletion;*/ + int n_unlinked_files; /* Count of unlinked files. */ + int n_bg_deletions; /* Count of background deletions. */ /* Temporary buffer management */ - yaffs_TempBuffer tempBuffer[YAFFS_N_TEMP_BUFFERS]; - int maxTemp; - int tempInUse; - int unmanagedTempAllocations; - int unmanagedTempDeallocations; + yaffs_buffer_t temp_buffer[YAFFS_N_TEMP_BUFFERS]; + int max_temp; + int temp_in_use; + int unmanaged_buffer_allocs; + int unmanaged_buffer_deallocs; /* yaffs2 runtime stuff */ - unsigned sequenceNumber; /* Sequence number of currently allocating block */ - unsigned oldestDirtySequence; + unsigned seq_number; /* Sequence number of currently allocating block */ + unsigned oldest_dirty_seq; + unsigned oldest_dirty_block; + + /* Block refreshing */ + int refresh_skip; /* A skip down counter. Refresh happens when this gets to zero. */ + + /* Dirty directory handling */ + struct ylist_head dirty_dirs; /* List of dirty directories */ + + + /* Statistcs */ + __u32 n_page_writes; + __u32 n_page_reads; + __u32 n_erasures; + __u32 n_erase_failures; + __u32 n_gc_copies; + __u32 all_gcs; + __u32 passive_gc_count; + __u32 oldest_dirty_gc_count; + __u32 n_gc_blocks; + __u32 bg_gcs; + __u32 n_retired_writes; + __u32 n_retired_blocks; + __u32 n_ecc_fixed; + __u32 n_ecc_unfixed; + __u32 n_tags_ecc_fixed; + __u32 n_tags_ecc_unfixed; + __u32 n_deletions; + __u32 n_unmarked_deletions; + __u32 refresh_count; + __u32 cache_hits; }; -typedef struct yaffs_DeviceStruct yaffs_Device; +typedef struct yaffs_dev_s yaffs_dev_t; /* The static layout of block usage etc is stored in the super block header */ typedef struct { int StructType; int version; - int checkpointStartBlock; - int checkpointEndBlock; - int startBlock; - int endBlock; + int checkpt_start_block; + int checkpt_end_block; + int start_block; + int end_block; int rfu[100]; -} yaffs_SuperBlockHeader; +} yaffs_sb_header; /* The CheckpointDevice structure holds the device information that changes at runtime and * must be preserved over unmount/mount cycles. */ typedef struct { - int structType; - int nErasedBlocks; - int allocationBlock; /* Current block being allocated off */ - __u32 allocationPage; - int nFreeChunks; + int struct_type; + int n_erased_blocks; + int alloc_block; /* Current block being allocated off */ + __u32 alloc_page; + int n_free_chunks; - int nDeletedFiles; /* Count of files awaiting deletion;*/ - int nUnlinkedFiles; /* Count of unlinked files. */ - int nBackgroundDeletions; /* Count of background deletions. */ + int n_deleted_files; /* Count of files awaiting deletion;*/ + int n_unlinked_files; /* Count of unlinked files. */ + int n_bg_deletions; /* Count of background deletions. */ /* yaffs2 runtime stuff */ - unsigned sequenceNumber; /* Sequence number of currently allocating block */ - unsigned oldestDirtySequence; + unsigned seq_number; /* Sequence number of currently allocating block */ -} yaffs_CheckpointDevice; +} yaffs_checkpt_dev_t; typedef struct { - int structType; + int struct_type; __u32 magic; __u32 version; __u32 head; -} yaffs_CheckpointValidity; +} yaffs_checkpt_validty_t; + + +struct yaffs_shadow_fixer_s { + int obj_id; + int shadowed_id; + struct yaffs_shadow_fixer_s *next; +}; + +/* Structure for doing xattr modifications */ +typedef struct { + int set; /* If 0 then this is a deletion */ + const YCHAR *name; + const void *data; + int size; + int flags; + int result; +}yaffs_xattr_mod; /*----------------------- YAFFS Functions -----------------------*/ -int yaffs_GutsInitialise(yaffs_Device *dev); -void yaffs_Deinitialise(yaffs_Device *dev); +int yaffs_guts_initialise(yaffs_dev_t *dev); +void yaffs_deinitialise(yaffs_dev_t *dev); -int yaffs_GetNumberOfFreeChunks(yaffs_Device *dev); +int yaffs_get_n_free_chunks(yaffs_dev_t *dev); -int yaffs_RenameObject(yaffs_Object *oldDir, const YCHAR *oldName, - yaffs_Object *newDir, const YCHAR *newName); +int yaffs_rename_obj(yaffs_obj_t *old_dir, const YCHAR *old_name, + yaffs_obj_t *new_dir, const YCHAR *new_name); -int yaffs_Unlink(yaffs_Object *dir, const YCHAR *name); -int yaffs_DeleteObject(yaffs_Object *obj); +int yaffs_unlinker(yaffs_obj_t *dir, const YCHAR *name); +int yaffs_del_obj(yaffs_obj_t *obj); -int yaffs_GetObjectName(yaffs_Object *obj, YCHAR *name, int buffSize); -int yaffs_GetObjectFileLength(yaffs_Object *obj); -int yaffs_GetObjectInode(yaffs_Object *obj); -unsigned yaffs_GetObjectType(yaffs_Object *obj); -int yaffs_GetObjectLinkCount(yaffs_Object *obj); +int yaffs_get_obj_name(yaffs_obj_t *obj, YCHAR *name, int buffer_size); +int yaffs_get_obj_length(yaffs_obj_t *obj); +int yaffs_get_obj_inode(yaffs_obj_t *obj); +unsigned yaffs_get_obj_type(yaffs_obj_t *obj); +int yaffs_get_obj_link_count(yaffs_obj_t *obj); -int yaffs_SetAttributes(yaffs_Object *obj, struct iattr *attr); -int yaffs_GetAttributes(yaffs_Object *obj, struct iattr *attr); +int yaffs_set_attribs(yaffs_obj_t *obj, struct iattr *attr); +int yaffs_get_attribs(yaffs_obj_t *obj, struct iattr *attr); /* File operations */ -int yaffs_ReadDataFromFile(yaffs_Object *obj, __u8 *buffer, loff_t offset, - int nBytes); -int yaffs_WriteDataToFile(yaffs_Object *obj, const __u8 *buffer, loff_t offset, - int nBytes, int writeThrough); -int yaffs_ResizeFile(yaffs_Object *obj, loff_t newSize); +int yaffs_file_rd(yaffs_obj_t *obj, __u8 *buffer, loff_t offset, + int n_bytes); +int yaffs_wr_file(yaffs_obj_t *obj, const __u8 *buffer, loff_t offset, + int n_bytes, int write_trhrough); +int yaffs_resize_file(yaffs_obj_t *obj, loff_t new_size); -yaffs_Object *yaffs_MknodFile(yaffs_Object *parent, const YCHAR *name, +yaffs_obj_t *yaffs_create_file(yaffs_obj_t *parent, const YCHAR *name, __u32 mode, __u32 uid, __u32 gid); -int yaffs_FlushFile(yaffs_Object *obj, int updateTime); + +int yaffs_flush_file(yaffs_obj_t *obj, int update_time, int data_sync); /* Flushing and checkpointing */ -void yaffs_FlushEntireDeviceCache(yaffs_Device *dev); +void yaffs_flush_whole_cache(yaffs_dev_t *dev); -int yaffs_CheckpointSave(yaffs_Device *dev); -int yaffs_CheckpointRestore(yaffs_Device *dev); +int yaffs_checkpoint_save(yaffs_dev_t *dev); +int yaffs_checkpoint_restore(yaffs_dev_t *dev); /* Directory operations */ -yaffs_Object *yaffs_MknodDirectory(yaffs_Object *parent, const YCHAR *name, +yaffs_obj_t *yaffs_create_dir(yaffs_obj_t *parent, const YCHAR *name, __u32 mode, __u32 uid, __u32 gid); -yaffs_Object *yaffs_FindObjectByName(yaffs_Object *theDir, const YCHAR *name); -int yaffs_ApplyToDirectoryChildren(yaffs_Object *theDir, - int (*fn) (yaffs_Object *)); +yaffs_obj_t *yaffs_find_by_name(yaffs_obj_t *the_dir, const YCHAR *name); +int yaffs_ApplyToDirectoryChildren(yaffs_obj_t *the_dir, + int (*fn) (yaffs_obj_t *)); -yaffs_Object *yaffs_FindObjectByNumber(yaffs_Device *dev, __u32 number); +yaffs_obj_t *yaffs_find_by_number(yaffs_dev_t *dev, __u32 number); /* Link operations */ -yaffs_Object *yaffs_Link(yaffs_Object *parent, const YCHAR *name, - yaffs_Object *equivalentObject); +yaffs_obj_t *yaffs_link_obj(yaffs_obj_t *parent, const YCHAR *name, + yaffs_obj_t *equiv_obj); -yaffs_Object *yaffs_GetEquivalentObject(yaffs_Object *obj); +yaffs_obj_t *yaffs_get_equivalent_obj(yaffs_obj_t *obj); /* Symlink operations */ -yaffs_Object *yaffs_MknodSymLink(yaffs_Object *parent, const YCHAR *name, +yaffs_obj_t *yaffs_create_symlink(yaffs_obj_t *parent, const YCHAR *name, __u32 mode, __u32 uid, __u32 gid, const YCHAR *alias); -YCHAR *yaffs_GetSymlinkAlias(yaffs_Object *obj); +YCHAR *yaffs_get_symlink_alias(yaffs_obj_t *obj); /* Special inodes (fifos, sockets and devices) */ -yaffs_Object *yaffs_MknodSpecial(yaffs_Object *parent, const YCHAR *name, +yaffs_obj_t *yaffs_create_special(yaffs_obj_t *parent, const YCHAR *name, __u32 mode, __u32 uid, __u32 gid, __u32 rdev); + +int yaffs_set_xattrib(yaffs_obj_t *obj, const YCHAR *name, const void * value, int size, int flags); +int yaffs_get_xattrib(yaffs_obj_t *obj, const YCHAR *name, void *value, int size); +int yaffs_list_xattrib(yaffs_obj_t *obj, char *buffer, int size); +int yaffs_remove_xattrib(yaffs_obj_t *obj, const YCHAR *name); + /* Special directories */ -yaffs_Object *yaffs_Root(yaffs_Device *dev); -yaffs_Object *yaffs_LostNFound(yaffs_Device *dev); +yaffs_obj_t *yaffs_root(yaffs_dev_t *dev); +yaffs_obj_t *yaffs_lost_n_found(yaffs_dev_t *dev); #ifdef CONFIG_YAFFS_WINCE /* CONFIG_YAFFS_WINCE special stuff */ -void yfsd_WinFileTimeNow(__u32 target[2]); +void yfsd_win_file_time_now(__u32 target[2]); #endif -#ifdef __KERNEL__ +void yaffs_handle_defered_free(yaffs_obj_t *obj); -void yaffs_HandleDeferedFree(yaffs_Object *obj); -#endif +void yaffs_update_dirty_dirs(yaffs_dev_t *dev); -/* Debug dump */ -int yaffs_DumpObject(yaffs_Object *obj); +int yaffs_bg_gc(yaffs_dev_t *dev, unsigned urgency); -void yaffs_GutsTest(yaffs_Device *dev); - -/* A few useful functions */ -void yaffs_InitialiseTags(yaffs_ExtendedTags *tags); -void yaffs_DeleteChunk(yaffs_Device *dev, int chunkId, int markNAND, int lyn); -int yaffs_CheckFF(__u8 *buffer, int nBytes); -void yaffs_HandleChunkError(yaffs_Device *dev, yaffs_BlockInfo *bi); - -__u8 *yaffs_GetTempBuffer(yaffs_Device *dev, int lineNo); -void yaffs_ReleaseTempBuffer(yaffs_Device *dev, __u8 *buffer, int lineNo); +/* Debug dump */ +int yaffs_dump_obj(yaffs_obj_t *obj); + +void yaffs_guts_test(yaffs_dev_t *dev); + +/* A few useful functions to be used within the core files*/ +void yaffs_chunk_del(yaffs_dev_t *dev, int chunk_id, int mark_flash, int lyn); +int yaffs_check_ff(__u8 *buffer, int n_bytes); +void yaffs_handle_chunk_error(yaffs_dev_t *dev, yaffs_block_info_t *bi); + +__u8 *yaffs_get_temp_buffer(yaffs_dev_t *dev, int line_no); +void yaffs_release_temp_buffer(yaffs_dev_t *dev, __u8 *buffer, int line_no); + +yaffs_obj_t *yaffs_find_or_create_by_number(yaffs_dev_t *dev, + int number, + yaffs_obj_type type); +int yaffs_put_chunk_in_file(yaffs_obj_t *in, int inode_chunk, + int nand_chunk, int in_scan); +void yaffs_set_obj_name(yaffs_obj_t *obj, const YCHAR *name); +void yaffs_set_obj_name_from_oh(yaffs_obj_t *obj, const yaffs_obj_header *oh); +void yaffs_add_obj_to_dir(yaffs_obj_t *directory, + yaffs_obj_t *obj); +YCHAR *yaffs_clone_str(const YCHAR *str); +void yaffs_link_fixup(yaffs_dev_t *dev, yaffs_obj_t *hard_list); +void yaffs_block_became_dirty(yaffs_dev_t *dev, int block_no); +int yaffs_update_oh(yaffs_obj_t *in, const YCHAR *name, + int force, int is_shrink, int shadows, + yaffs_xattr_mod *xop); +void yaffs_handle_shadowed_obj(yaffs_dev_t *dev, int obj_id, + int backward_scanning); +int yaffs_check_alloc_available(yaffs_dev_t *dev, int n_chunks); +yaffs_tnode_t *yaffs_get_tnode(yaffs_dev_t *dev); +yaffs_tnode_t *yaffs_add_find_tnode_0(yaffs_dev_t *dev, + yaffs_file_s *file_struct, + __u32 chunk_id, + yaffs_tnode_t *passed_tn); + +int yaffs_do_file_wr(yaffs_obj_t *in, const __u8 *buffer, loff_t offset, + int n_bytes, int write_trhrough); +void yaffs_resize_file_down( yaffs_obj_t *obj, loff_t new_size); +void yaffs_skip_rest_of_block(yaffs_dev_t *dev); + +int yaffs_count_free_chunks(yaffs_dev_t *dev); + +yaffs_tnode_t *yaffs_find_tnode_0(yaffs_dev_t *dev, + yaffs_file_s *file_struct, + __u32 chunk_id); + +__u32 yaffs_get_group_base(yaffs_dev_t *dev, yaffs_tnode_t *tn, unsigned pos); #endif diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_linux.h b/target/linux/generic/files/fs/yaffs2/yaffs_linux.h new file mode 100644 index 0000000000..19d7b824c5 --- /dev/null +++ b/target/linux/generic/files/fs/yaffs2/yaffs_linux.h @@ -0,0 +1,43 @@ +/* + * YAFFS: Yet another Flash File System . A NAND-flash specific file system. + * + * Copyright (C) 2002-2010 Aleph One Ltd. + * for Toby Churchill Ltd and Brightstar Engineering + * + * Created by Charles Manning <charles@aleph1.co.uk> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License version 2.1 as + * published by the Free Software Foundation. + * + * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL. + */ + +#ifndef __YAFFS_LINUX_H__ +#define __YAFFS_LINUX_H__ + +#include "devextras.h" +#include "yportenv.h" + +struct yaffs_LinuxContext { + struct ylist_head contextList; /* List of these we have mounted */ + struct yaffs_dev_s *dev; + struct super_block * superBlock; + struct task_struct *bgThread; /* Background thread for this device */ + int bgRunning; + struct semaphore grossLock; /* Gross locking semaphore */ + __u8 *spareBuffer; /* For mtdif2 use. Don't know the size of the buffer + * at compile time so we have to allocate it. + */ + struct ylist_head searchContexts; + void (*putSuperFunc)(struct super_block *sb); + + struct task_struct *readdirProcess; + unsigned mount_id; +}; + +#define yaffs_dev_to_lc(dev) ((struct yaffs_LinuxContext *)((dev)->os_context)) +#define yaffs_dev_to_mtd(dev) ((struct mtd_info *)((dev)->driver_context)) + +#endif + diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_linux_allocator.c b/target/linux/generic/files/fs/yaffs2/yaffs_linux_allocator.c new file mode 100644 index 0000000000..f39b9aad28 --- /dev/null +++ b/target/linux/generic/files/fs/yaffs2/yaffs_linux_allocator.c @@ -0,0 +1,200 @@ +/* + * YAFFS: Yet another Flash File System . A NAND-flash specific file system. + * + * Copyright (C) 2002-2010 Aleph One Ltd. + * for Toby Churchill Ltd and Brightstar Engineering + * + * Created by Charles Manning <charles@aleph1.co.uk> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License version 2.1 as + * published by the Free Software Foundation. + * + * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL. + * + * Note: Tis code is currently unused. Being checked in in case it becomes useful. + */ + + +#include "yaffs_allocator.h" +#include "yaffs_guts.h" +#include "yaffs_trace.h" +#include "yportenv.h" +#include "yaffs_linux.h" +/* + * Start out with the same allocator as yaffs direct. + * Todo: Change to Linux slab allocator. + */ + + + +#define NAMELEN 20 +struct yaffs_AllocatorStruct { + char tnode_name[NAMELEN+1]; + char object_name[NAMELEN+1]; + struct kmem_cache *tnode_cache; + struct kmem_cache *object_cache; +}; + +typedef struct yaffs_AllocatorStruct yaffs_Allocator; + +int mount_id; + +void yaffs_deinit_raw_tnodes_and_objs(yaffs_dev_t *dev) +{ + yaffs_Allocator *allocator = (yaffs_Allocator *)dev->allocator; + + T(YAFFS_TRACE_ALLOCATE,(TSTR("Deinitialising yaffs allocator\n"))); + + if(allocator){ + if(allocator->tnode_cache){ + kmem_cache_destroy(allocator->tnode_cache); + allocator->tnode_cache = NULL; + } else { + T(YAFFS_TRACE_ALWAYS, + (TSTR("NULL tnode cache\n"))); + YBUG(); + } + + if(allocator->object_cache){ + kmem_cache_destroy(allocator->object_cache); + allocator->object_cache = NULL; + } else { + T(YAFFS_TRACE_ALWAYS, + (TSTR("NULL object cache\n"))); + YBUG(); + } + + YFREE(allocator); + + } else { + T(YAFFS_TRACE_ALWAYS, + (TSTR("Deinitialising NULL allocator\n"))); + YBUG(); + } + dev->allocator = NULL; +} + + +static void fake_ctor0(void *data){data = data;} +static void fake_ctor1(void *data){data = data;} +static void fake_ctor2(void *data){data = data;} +static void fake_ctor3(void *data){data = data;} +static void fake_ctor4(void *data){data = data;} +static void fake_ctor5(void *data){data = data;} +static void fake_ctor6(void *data){data = data;} +static void fake_ctor7(void *data){data = data;} +static void fake_ctor8(void *data){data = data;} +static void fake_ctor9(void *data){data = data;} + +static void (*fake_ctor_list[10]) (void *) = { + fake_ctor0, + fake_ctor1, + fake_ctor2, + fake_ctor3, + fake_ctor4, + fake_ctor5, + fake_ctor6, + fake_ctor7, + fake_ctor8, + fake_ctor9, +}; + +void yaffs_init_raw_tnodes_and_objs(yaffs_dev_t *dev) +{ + yaffs_Allocator *allocator; + unsigned mount_id = yaffs_dev_to_lc(dev)->mount_id; + + T(YAFFS_TRACE_ALLOCATE,(TSTR("Initialising yaffs allocator\n"))); + + if(dev->allocator) + YBUG(); + else if(mount_id >= 10){ + T(YAFFS_TRACE_ALWAYS,(TSTR("Bad mount_id %u\n"),mount_id)); + } else { + allocator = YMALLOC(sizeof(yaffs_Allocator)); + memset(allocator,0,sizeof(yaffs_Allocator)); + dev->allocator = allocator; + + if(!dev->allocator){ + T(YAFFS_TRACE_ALWAYS, + (TSTR("yaffs allocator creation failed\n"))); + YBUG(); + return; + + } + + sprintf(allocator->tnode_name,"yaffs_t_%u",mount_id); + sprintf(allocator->object_name,"yaffs_o_%u",mount_id); + + allocator->tnode_cache = + kmem_cache_create(allocator->tnode_name, + dev->tnode_size, + 0, 0, + fake_ctor_list[mount_id]); + if(allocator->tnode_cache) + T(YAFFS_TRACE_ALLOCATE, + (TSTR("tnode cache \"%s\" %p\n"), + allocator->tnode_name,allocator->tnode_cache)); + else { + T(YAFFS_TRACE_ALWAYS, + (TSTR("yaffs cache creation failed\n"))); + YBUG(); + } + + + allocator->object_cache = + kmem_cache_create(allocator->object_name, + sizeof(yaffs_obj_t), + 0, 0, + fake_ctor_list[mount_id]); + + if(allocator->object_cache) + T(YAFFS_TRACE_ALLOCATE, + (TSTR("object cache \"%s\" %p\n"), + allocator->object_name,allocator->object_cache)); + + else { + T(YAFFS_TRACE_ALWAYS, + (TSTR("yaffs cache creation failed\n"))); + YBUG(); + } + } +} + + +yaffs_tnode_t *yaffs_alloc_raw_tnode(yaffs_dev_t *dev) +{ + yaffs_Allocator *allocator = dev->allocator; + if(!allocator || !allocator->tnode_cache){ + YBUG(); + return NULL; + } + return kmem_cache_alloc(allocator->tnode_cache, GFP_NOFS); +} + +void yaffs_free_raw_tnode(yaffs_dev_t *dev, yaffs_tnode_t *tn) +{ + yaffs_Allocator *allocator = dev->allocator; + kmem_cache_free(allocator->tnode_cache,tn); +} + +yaffs_obj_t *yaffs_alloc_raw_obj(yaffs_dev_t *dev) +{ + yaffs_Allocator *allocator = dev->allocator; + if(!allocator){ + YBUG(); + return NULL; + } + if(!allocator->object_cache){ + YBUG(); + return NULL; + } + return kmem_cache_alloc(allocator->object_cache, GFP_NOFS); +} + +void yaffs_free_raw_obj(yaffs_dev_t *dev, yaffs_obj_t *obj) +{ + yaffs_Allocator *allocator = dev->allocator; + kmem_cache_free(allocator->object_cache,obj); +} diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_list.h b/target/linux/generic/files/fs/yaffs2/yaffs_list.h new file mode 100644 index 0000000000..09d80b8562 --- /dev/null +++ b/target/linux/generic/files/fs/yaffs2/yaffs_list.h @@ -0,0 +1,127 @@ +/* + * YAFFS: Yet another Flash File System . A NAND-flash specific file system. + * + * Copyright (C) 2002-2010 Aleph One Ltd. + * for Toby Churchill Ltd and Brightstar Engineering + * + * Created by Charles Manning <charles@aleph1.co.uk> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License version 2.1 as + * published by the Free Software Foundation. + * + * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL. + */ + +/* + * This file is just holds extra declarations of macros that would normally + * be providesd in the Linux kernel. These macros have been written from + * scratch but are functionally equivalent to the Linux ones. + * + */ + +#ifndef __YAFFS_LIST_H__ +#define __YAFFS_LIST_H__ + + +#include "yportenv.h" + +/* + * This is a simple doubly linked list implementation that matches the + * way the Linux kernel doubly linked list implementation works. + */ + +struct ylist_head { + struct ylist_head *next; /* next in chain */ + struct ylist_head *prev; /* previous in chain */ +}; + + +/* Initialise a static list */ +#define YLIST_HEAD(name) \ +struct ylist_head name = { &(name), &(name)} + + + +/* Initialise a list head to an empty list */ +#define YINIT_LIST_HEAD(p) \ +do { \ + (p)->next = (p);\ + (p)->prev = (p); \ +} while (0) + + +/* Add an element to a list */ +static Y_INLINE void ylist_add(struct ylist_head *newEntry, + struct ylist_head *list) +{ + struct ylist_head *listNext = list->next; + + list->next = newEntry; + newEntry->prev = list; + newEntry->next = listNext; + listNext->prev = newEntry; + +} + +static Y_INLINE void ylist_add_tail(struct ylist_head *newEntry, + struct ylist_head *list) +{ + struct ylist_head *listPrev = list->prev; + + list->prev = newEntry; + newEntry->next = list; + newEntry->prev = listPrev; + listPrev->next = newEntry; + +} + + +/* Take an element out of its current list, with or without + * reinitialising the links.of the entry*/ +static Y_INLINE void ylist_del(struct ylist_head *entry) +{ + struct ylist_head *listNext = entry->next; + struct ylist_head *listPrev = entry->prev; + + listNext->prev = listPrev; + listPrev->next = listNext; + +} + +static Y_INLINE void ylist_del_init(struct ylist_head *entry) +{ + ylist_del(entry); + entry->next = entry->prev = entry; +} + + +/* Test if the list is empty */ +static Y_INLINE int ylist_empty(struct ylist_head *entry) +{ + return (entry->next == entry); +} + + +/* ylist_entry takes a pointer to a list entry and offsets it to that + * we can find a pointer to the object it is embedded in. + */ + + +#define ylist_entry(entry, type, member) \ + ((type *)((char *)(entry)-(unsigned long)(&((type *)NULL)->member))) + + +/* ylist_for_each and list_for_each_safe iterate over lists. + * ylist_for_each_safe uses temporary storage to make the list delete safe + */ + +#define ylist_for_each(itervar, list) \ + for (itervar = (list)->next; itervar != (list); itervar = itervar->next) + +#define ylist_for_each_safe(itervar, saveVar, list) \ + for (itervar = (list)->next, saveVar = (list)->next->next; \ + itervar != (list); itervar = saveVar, saveVar = saveVar->next) + + +#endif diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_mtdif.c b/target/linux/generic/files/fs/yaffs2/yaffs_mtdif.c index 306e18839e..b2d4318e66 100644 --- a/target/linux/generic/files/fs/yaffs2/yaffs_mtdif.c +++ b/target/linux/generic/files/fs/yaffs2/yaffs_mtdif.c @@ -1,7 +1,7 @@ /* * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. * - * Copyright (C) 2002-2007 Aleph One Ltd. + * Copyright (C) 2002-2010 Aleph One Ltd. * for Toby Churchill Ltd and Brightstar Engineering * * Created by Charles Manning <charles@aleph1.co.uk> @@ -11,9 +11,6 @@ * published by the Free Software Foundation. */ -const char *yaffs_mtdif_c_version = - "$Id: yaffs_mtdif.c,v 1.22 2009-03-06 17:20:51 wookey Exp $"; - #include "yportenv.h" @@ -24,208 +21,26 @@ const char *yaffs_mtdif_c_version = #include "linux/time.h" #include "linux/mtd/nand.h" -#if (MTD_VERSION_CODE < MTD_VERSION(2, 6, 18)) -static struct nand_oobinfo yaffs_oobinfo = { - .useecc = 1, - .eccbytes = 6, - .eccpos = {8, 9, 10, 13, 14, 15} -}; - -static struct nand_oobinfo yaffs_noeccinfo = { - .useecc = 0, -}; -#endif - -#if (MTD_VERSION_CODE > MTD_VERSION(2, 6, 17)) -static inline void translate_spare2oob(const yaffs_Spare *spare, __u8 *oob) -{ - oob[0] = spare->tagByte0; - oob[1] = spare->tagByte1; - oob[2] = spare->tagByte2; - oob[3] = spare->tagByte3; - oob[4] = spare->tagByte4; - oob[5] = spare->tagByte5 & 0x3f; - oob[5] |= spare->blockStatus == 'Y' ? 0 : 0x80; - oob[5] |= spare->pageStatus == 0 ? 0 : 0x40; - oob[6] = spare->tagByte6; - oob[7] = spare->tagByte7; -} - -static inline void translate_oob2spare(yaffs_Spare *spare, __u8 *oob) -{ - struct yaffs_NANDSpare *nspare = (struct yaffs_NANDSpare *)spare; - spare->tagByte0 = oob[0]; - spare->tagByte1 = oob[1]; - spare->tagByte2 = oob[2]; - spare->tagByte3 = oob[3]; - spare->tagByte4 = oob[4]; - spare->tagByte5 = oob[5] == 0xff ? 0xff : oob[5] & 0x3f; - spare->blockStatus = oob[5] & 0x80 ? 0xff : 'Y'; - spare->pageStatus = oob[5] & 0x40 ? 0xff : 0; - spare->ecc1[0] = spare->ecc1[1] = spare->ecc1[2] = 0xff; - spare->tagByte6 = oob[6]; - spare->tagByte7 = oob[7]; - spare->ecc2[0] = spare->ecc2[1] = spare->ecc2[2] = 0xff; - - nspare->eccres1 = nspare->eccres2 = 0; /* FIXME */ -} -#endif +#include "yaffs_linux.h" -int nandmtd_WriteChunkToNAND(yaffs_Device *dev, int chunkInNAND, - const __u8 *data, const yaffs_Spare *spare) +int nandmtd_EraseBlockInNAND(yaffs_dev_t *dev, int blockNumber) { - struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice); -#if (MTD_VERSION_CODE > MTD_VERSION(2, 6, 17)) - struct mtd_oob_ops ops; -#endif - size_t dummy; - int retval = 0; - - loff_t addr = ((loff_t) chunkInNAND) * dev->nDataBytesPerChunk; -#if (MTD_VERSION_CODE > MTD_VERSION(2, 6, 17)) - __u8 spareAsBytes[8]; /* OOB */ - - if (data && !spare) - retval = mtd->write(mtd, addr, dev->nDataBytesPerChunk, - &dummy, data); - else if (spare) { - if (dev->useNANDECC) { - translate_spare2oob(spare, spareAsBytes); - ops.mode = MTD_OOB_AUTO; - ops.ooblen = 8; /* temp hack */ - } else { - ops.mode = MTD_OOB_RAW; - ops.ooblen = YAFFS_BYTES_PER_SPARE; - } - ops.len = data ? dev->nDataBytesPerChunk : ops.ooblen; - ops.datbuf = (u8 *)data; - ops.ooboffs = 0; - ops.oobbuf = spareAsBytes; - retval = mtd->write_oob(mtd, addr, &ops); - } -#else - __u8 *spareAsBytes = (__u8 *) spare; - - if (data && spare) { - if (dev->useNANDECC) - retval = - mtd->write_ecc(mtd, addr, dev->nDataBytesPerChunk, - &dummy, data, spareAsBytes, - &yaffs_oobinfo); - else - retval = - mtd->write_ecc(mtd, addr, dev->nDataBytesPerChunk, - &dummy, data, spareAsBytes, - &yaffs_noeccinfo); - } else { - if (data) - retval = - mtd->write(mtd, addr, dev->nDataBytesPerChunk, &dummy, - data); - if (spare) - retval = - mtd->write_oob(mtd, addr, YAFFS_BYTES_PER_SPARE, - &dummy, spareAsBytes); - } -#endif - - if (retval == 0) - return YAFFS_OK; - else - return YAFFS_FAIL; -} - -int nandmtd_ReadChunkFromNAND(yaffs_Device *dev, int chunkInNAND, __u8 *data, - yaffs_Spare *spare) -{ - struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice); -#if (MTD_VERSION_CODE > MTD_VERSION(2, 6, 17)) - struct mtd_oob_ops ops; -#endif - size_t dummy; - int retval = 0; - - loff_t addr = ((loff_t) chunkInNAND) * dev->nDataBytesPerChunk; -#if (MTD_VERSION_CODE > MTD_VERSION(2, 6, 17)) - __u8 spareAsBytes[8]; /* OOB */ - - if (data && !spare) - retval = mtd->read(mtd, addr, dev->nDataBytesPerChunk, - &dummy, data); - else if (spare) { - if (dev->useNANDECC) { - ops.mode = MTD_OOB_AUTO; - ops.ooblen = 8; /* temp hack */ - } else { - ops.mode = MTD_OOB_RAW; - ops.ooblen = YAFFS_BYTES_PER_SPARE; - } - ops.len = data ? dev->nDataBytesPerChunk : ops.ooblen; - ops.datbuf = data; - ops.ooboffs = 0; - ops.oobbuf = spareAsBytes; - retval = mtd->read_oob(mtd, addr, &ops); - if (dev->useNANDECC) - translate_oob2spare(spare, spareAsBytes); - } -#else - __u8 *spareAsBytes = (__u8 *) spare; - - if (data && spare) { - if (dev->useNANDECC) { - /* Careful, this call adds 2 ints */ - /* to the end of the spare data. Calling function */ - /* should allocate enough memory for spare, */ - /* i.e. [YAFFS_BYTES_PER_SPARE+2*sizeof(int)]. */ - retval = - mtd->read_ecc(mtd, addr, dev->nDataBytesPerChunk, - &dummy, data, spareAsBytes, - &yaffs_oobinfo); - } else { - retval = - mtd->read_ecc(mtd, addr, dev->nDataBytesPerChunk, - &dummy, data, spareAsBytes, - &yaffs_noeccinfo); - } - } else { - if (data) - retval = - mtd->read(mtd, addr, dev->nDataBytesPerChunk, &dummy, - data); - if (spare) - retval = - mtd->read_oob(mtd, addr, YAFFS_BYTES_PER_SPARE, - &dummy, spareAsBytes); - } -#endif - - if (retval == 0) - return YAFFS_OK; - else - return YAFFS_FAIL; -} - -int nandmtd_EraseBlockInNAND(yaffs_Device *dev, int blockNumber) -{ - struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice); + struct mtd_info *mtd = yaffs_dev_to_mtd(dev); __u32 addr = - ((loff_t) blockNumber) * dev->nDataBytesPerChunk - * dev->nChunksPerBlock; + ((loff_t) blockNumber) * dev->param.total_bytes_per_chunk + * dev->param.chunks_per_block; struct erase_info ei; + int retval = 0; ei.mtd = mtd; ei.addr = addr; - ei.len = dev->nDataBytesPerChunk * dev->nChunksPerBlock; + ei.len = dev->param.total_bytes_per_chunk * dev->param.chunks_per_block; ei.time = 1000; ei.retries = 2; ei.callback = NULL; ei.priv = (u_long) dev; - /* Todo finish off the ei if required */ - - sema_init(&dev->sem, 0); - retval = mtd->erase(mtd, &ei); if (retval == 0) @@ -234,7 +49,7 @@ int nandmtd_EraseBlockInNAND(yaffs_Device *dev, int blockNumber) return YAFFS_FAIL; } -int nandmtd_InitialiseNAND(yaffs_Device *dev) +int nandmtd_InitialiseNAND(yaffs_dev_t *dev) { return YAFFS_OK; } diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_mtdif.h b/target/linux/generic/files/fs/yaffs2/yaffs_mtdif.h index e72cfcddfe..31fc3834a8 100644 --- a/target/linux/generic/files/fs/yaffs2/yaffs_mtdif.h +++ b/target/linux/generic/files/fs/yaffs2/yaffs_mtdif.h @@ -1,7 +1,7 @@ /* * YAFFS: Yet another Flash File System . A NAND-flash specific file system. * - * Copyright (C) 2002-2007 Aleph One Ltd. + * Copyright (C) 2002-2010 Aleph One Ltd. * for Toby Churchill Ltd and Brightstar Engineering * * Created by Charles Manning <charles@aleph1.co.uk> @@ -22,11 +22,6 @@ extern struct nand_oobinfo yaffs_oobinfo; extern struct nand_oobinfo yaffs_noeccinfo; #endif - -int nandmtd_WriteChunkToNAND(yaffs_Device *dev, int chunkInNAND, - const __u8 *data, const yaffs_Spare *spare); -int nandmtd_ReadChunkFromNAND(yaffs_Device *dev, int chunkInNAND, __u8 *data, - yaffs_Spare *spare); -int nandmtd_EraseBlockInNAND(yaffs_Device *dev, int blockNumber); -int nandmtd_InitialiseNAND(yaffs_Device *dev); +int nandmtd_EraseBlockInNAND(yaffs_dev_t *dev, int blockNumber); +int nandmtd_InitialiseNAND(yaffs_dev_t *dev); #endif diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_mtdif1-compat.c b/target/linux/generic/files/fs/yaffs2/yaffs_mtdif1-compat.c deleted file mode 100644 index 6a376f1f72..0000000000 --- a/target/linux/generic/files/fs/yaffs2/yaffs_mtdif1-compat.c +++ /dev/null @@ -1,434 +0,0 @@ -From ian@brightstareng.com Fri May 18 15:06:49 2007 -From ian@brightstareng.com Fri May 18 15:08:21 2007 -Received: from 206.173.66.57.ptr.us.xo.net ([206.173.66.57] helo=zebra.brightstareng.com) - by apollo.linkchoose.co.uk with esmtp (Exim 4.60) - (envelope-from <ian@brightstareng.com>) - id 1Hp380-00011e-T6 - for david.goodenough@linkchoose.co.uk; Fri, 18 May 2007 15:08:21 +0100 -Received: from localhost (localhost.localdomain [127.0.0.1]) - by zebra.brightstareng.com (Postfix) with ESMTP - id 4819F28C004; Fri, 18 May 2007 10:07:49 -0400 (EDT) -Received: from zebra.brightstareng.com ([127.0.0.1]) - by localhost (zebra [127.0.0.1]) (amavisd-new, port 10024) with ESMTP - id 05328-06; Fri, 18 May 2007 10:07:16 -0400 (EDT) -Received: from pippin (unknown [192.168.1.25]) - by zebra.brightstareng.com (Postfix) with ESMTP - id 8BEF528C1BC; Fri, 18 May 2007 10:06:53 -0400 (EDT) -From: Ian McDonnell <ian@brightstareng.com> -To: David Goodenough <david.goodenough@linkchoose.co.uk> -Subject: Re: something tested this time -- yaffs_mtdif1-compat.c -Date: Fri, 18 May 2007 10:06:49 -0400 -User-Agent: KMail/1.9.1 -References: <200705142207.06909.ian@brightstareng.com> <200705171131.53536.ian@brightstareng.com> <200705181334.32166.david.goodenough@linkchoose.co.uk> -In-Reply-To: <200705181334.32166.david.goodenough@linkchoose.co.uk> -Cc: Andrea Conti <alyf@alyf.net>, - Charles Manning <manningc2@actrix.gen.nz> -MIME-Version: 1.0 -Content-Type: Multipart/Mixed; - boundary="Boundary-00=_5LbTGmt62YoutxM" -Message-Id: <200705181006.49860.ian@brightstareng.com> -X-Virus-Scanned: by amavisd-new at brightstareng.com -Status: R -X-Status: NT -X-KMail-EncryptionState: -X-KMail-SignatureState: -X-KMail-MDN-Sent: - ---Boundary-00=_5LbTGmt62YoutxM -Content-Type: text/plain; - charset="iso-8859-15" -Content-Transfer-Encoding: 7bit -Content-Disposition: inline - -David, Andrea, - -On Friday 18 May 2007 08:34, you wrote: -> Yea team. With this fix in place (I put it in the wrong place -> at first) I can now mount and ls the Yaffs partition without -> an error messages! - -Good news! - -Attached is a newer yaffs_mtdif1.c with a bandaid to help the -2.6.18 and 2.6.19 versions of MTD not trip on the oob read. -See the LINUX_VERSION_CODE conditional in -nandmtd1_ReadChunkWithTagsFromNAND. - --imcd - ---Boundary-00=_5LbTGmt62YoutxM -Content-Type: text/x-csrc; - charset="iso-8859-15"; - name="yaffs_mtdif1.c" -Content-Transfer-Encoding: 7bit -Content-Disposition: attachment; - filename="yaffs_mtdif1.c" - -/* - * YAFFS: Yet another FFS. A NAND-flash specific file system. - * yaffs_mtdif1.c NAND mtd interface functions for small-page NAND. - * - * Copyright (C) 2002 Aleph One Ltd. - * for Toby Churchill Ltd and Brightstar Engineering - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - */ - -/* - * This module provides the interface between yaffs_nand.c and the - * MTD API. This version is used when the MTD interface supports the - * 'mtd_oob_ops' style calls to read_oob and write_oob, circa 2.6.17, - * and we have small-page NAND device. - * - * These functions are invoked via function pointers in yaffs_nand.c. - * This replaces functionality provided by functions in yaffs_mtdif.c - * and the yaffs_TagsCompatability functions in yaffs_tagscompat.c that are - * called in yaffs_mtdif.c when the function pointers are NULL. - * We assume the MTD layer is performing ECC (useNANDECC is true). - */ - -#include "yportenv.h" -#include "yaffs_guts.h" -#include "yaffs_packedtags1.h" -#include "yaffs_tagscompat.h" // for yaffs_CalcTagsECC - -#include "linux/kernel.h" -#include "linux/version.h" -#include "linux/types.h" -#include "linux/mtd/mtd.h" - -/* Don't compile this module if we don't have MTD's mtd_oob_ops interface */ -#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17)) - -const char *yaffs_mtdif1_c_version = "$Id$"; - -#ifndef CONFIG_YAFFS_9BYTE_TAGS -# define YTAG1_SIZE 8 -#else -# define YTAG1_SIZE 9 -#endif - -#if 0 -/* Use the following nand_ecclayout with MTD when using - * CONFIG_YAFFS_9BYTE_TAGS and the older on-NAND tags layout. - * If you have existing Yaffs images and the byte order differs from this, - * adjust 'oobfree' to match your existing Yaffs data. - * - * This nand_ecclayout scatters/gathers to/from the old-yaffs layout with the - * pageStatus byte (at NAND spare offset 4) scattered/gathered from/to - * the 9th byte. - * - * Old-style on-NAND format: T0,T1,T2,T3,P,B,T4,T5,E0,E1,E2,T6,T7,E3,E4,E5 - * We have/need PackedTags1 plus pageStatus: T0,T1,T2,T3,T4,T5,T6,T7,P - * where Tn are the tag bytes, En are MTD's ECC bytes, P is the pageStatus - * byte and B is the small-page bad-block indicator byte. - */ -static struct nand_ecclayout nand_oob_16 = { - .eccbytes = 6, - .eccpos = { 8, 9, 10, 13, 14, 15 }, - .oobavail = 9, - .oobfree = { { 0, 4 }, { 6, 2 }, { 11, 2 }, { 4, 1 } } -}; -#endif - -/* Write a chunk (page) of data to NAND. - * - * Caller always provides ExtendedTags data which are converted to a more - * compact (packed) form for storage in NAND. A mini-ECC runs over the - * contents of the tags meta-data; used to valid the tags when read. - * - * - Pack ExtendedTags to PackedTags1 form - * - Compute mini-ECC for PackedTags1 - * - Write data and packed tags to NAND. - * - * Note: Due to the use of the PackedTags1 meta-data which does not include - * a full sequence number (as found in the larger PackedTags2 form) it is - * necessary for Yaffs to re-write a chunk/page (just once) to mark it as - * discarded and dirty. This is not ideal: newer NAND parts are supposed - * to be written just once. When Yaffs performs this operation, this - * function is called with a NULL data pointer -- calling MTD write_oob - * without data is valid usage (2.6.17). - * - * Any underlying MTD error results in YAFFS_FAIL. - * Returns YAFFS_OK or YAFFS_FAIL. - */ -int nandmtd1_WriteChunkWithTagsToNAND(yaffs_Device *dev, - int chunkInNAND, const __u8 * data, const yaffs_ExtendedTags * etags) -{ - struct mtd_info * mtd = dev->genericDevice; - int chunkBytes = dev->nDataBytesPerChunk; - loff_t addr = ((loff_t)chunkInNAND) * chunkBytes; - struct mtd_oob_ops ops; - yaffs_PackedTags1 pt1; - int retval; - - /* we assume that PackedTags1 and yaffs_Tags are compatible */ - compile_time_assertion(sizeof(yaffs_PackedTags1) == 12); - compile_time_assertion(sizeof(yaffs_Tags) == 8); - - yaffs_PackTags1(&pt1, etags); - yaffs_CalcTagsECC((yaffs_Tags *)&pt1); - - /* When deleting a chunk, the upper layer provides only skeletal - * etags, one with chunkDeleted set. However, we need to update the - * tags, not erase them completely. So we use the NAND write property - * that only zeroed-bits stick and set tag bytes to all-ones and - * zero just the (not) deleted bit. - */ -#ifndef CONFIG_YAFFS_9BYTE_TAGS - if (etags->chunkDeleted) { - memset(&pt1, 0xff, 8); - /* clear delete status bit to indicate deleted */ - pt1.deleted = 0; - } -#else - ((__u8 *)&pt1)[8] = 0xff; - if (etags->chunkDeleted) { - memset(&pt1, 0xff, 8); - /* zero pageStatus byte to indicate deleted */ - ((__u8 *)&pt1)[8] = 0; - } -#endif - - memset(&ops, 0, sizeof(ops)); - ops.mode = MTD_OOB_AUTO; - ops.len = (data) ? chunkBytes : 0; - ops.ooblen = YTAG1_SIZE; - ops.datbuf = (__u8 *)data; - ops.oobbuf = (__u8 *)&pt1; - - retval = mtd->write_oob(mtd, addr, &ops); - if (retval) { - yaffs_trace(YAFFS_TRACE_MTD, - "write_oob failed, chunk %d, mtd error %d\n", - chunkInNAND, retval); - } - return retval ? YAFFS_FAIL : YAFFS_OK; -} - -/* Return with empty ExtendedTags but add eccResult. - */ -static int rettags(yaffs_ExtendedTags * etags, int eccResult, int retval) -{ - if (etags) { - memset(etags, 0, sizeof(*etags)); - etags->eccResult = eccResult; - } - return retval; -} - -/* Read a chunk (page) from NAND. - * - * Caller expects ExtendedTags data to be usable even on error; that is, - * all members except eccResult and blockBad are zeroed. - * - * - Check ECC results for data (if applicable) - * - Check for blank/erased block (return empty ExtendedTags if blank) - * - Check the PackedTags1 mini-ECC (correct if necessary/possible) - * - Convert PackedTags1 to ExtendedTags - * - Update eccResult and blockBad members to refect state. - * - * Returns YAFFS_OK or YAFFS_FAIL. - */ -int nandmtd1_ReadChunkWithTagsFromNAND(yaffs_Device *dev, - int chunkInNAND, __u8 * data, yaffs_ExtendedTags * etags) -{ - struct mtd_info * mtd = dev->genericDevice; - int chunkBytes = dev->nDataBytesPerChunk; - loff_t addr = ((loff_t)chunkInNAND) * chunkBytes; - int eccres = YAFFS_ECC_RESULT_NO_ERROR; - struct mtd_oob_ops ops; - yaffs_PackedTags1 pt1; - int retval; - int deleted; - - memset(&ops, 0, sizeof(ops)); - ops.mode = MTD_OOB_AUTO; - ops.len = (data) ? chunkBytes : 0; - ops.ooblen = YTAG1_SIZE; - ops.datbuf = data; - ops.oobbuf = (__u8 *)&pt1; - -#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,20)) - /* In MTD 2.6.18 to 2.6.19 nand_base.c:nand_do_read_oob() has a bug; - * help it out with ops.len = ops.ooblen when ops.datbuf == NULL. - */ - ops.len = (ops.datbuf) ? ops.len : ops.ooblen; -#endif - /* Read page and oob using MTD. - * Check status and determine ECC result. - */ - retval = mtd->read_oob(mtd, addr, &ops); - if (retval) { - yaffs_trace(YAFFS_TRACE_MTD, - "read_oob failed, chunk %d, mtd error %d\n", - chunkInNAND, retval); - } - - switch (retval) { - case 0: - /* no error */ - break; - - case -EUCLEAN: - /* MTD's ECC fixed the data */ - eccres = YAFFS_ECC_RESULT_FIXED; - dev->eccFixed++; - break; - - case -EBADMSG: - /* MTD's ECC could not fix the data */ - dev->eccUnfixed++; - /* fall into... */ - default: - rettags(etags, YAFFS_ECC_RESULT_UNFIXED, 0); - etags->blockBad = (mtd->block_isbad)(mtd, addr); - return YAFFS_FAIL; - } - - /* Check for a blank/erased chunk. - */ - if (yaffs_CheckFF((__u8 *)&pt1, 8)) { - /* when blank, upper layers want eccResult to be <= NO_ERROR */ - return rettags(etags, YAFFS_ECC_RESULT_NO_ERROR, YAFFS_OK); - } - -#ifndef CONFIG_YAFFS_9BYTE_TAGS - /* Read deleted status (bit) then return it to it's non-deleted - * state before performing tags mini-ECC check. pt1.deleted is - * inverted. - */ - deleted = !pt1.deleted; - pt1.deleted = 1; -#else - (void) deleted; /* not used */ -#endif - - /* Check the packed tags mini-ECC and correct if necessary/possible. - */ - retval = yaffs_CheckECCOnTags((yaffs_Tags *)&pt1); - switch (retval) { - case 0: - /* no tags error, use MTD result */ - break; - case 1: - /* recovered tags-ECC error */ - dev->tagsEccFixed++; - eccres = YAFFS_ECC_RESULT_FIXED; - break; - default: - /* unrecovered tags-ECC error */ - dev->tagsEccUnfixed++; - return rettags(etags, YAFFS_ECC_RESULT_UNFIXED, YAFFS_FAIL); - } - - /* Unpack the tags to extended form and set ECC result. - * [set shouldBeFF just to keep yaffs_UnpackTags1 happy] - */ - pt1.shouldBeFF = 0xFFFFFFFF; - yaffs_UnpackTags1(etags, &pt1); - etags->eccResult = eccres; - - /* Set deleted state. - */ -#ifndef CONFIG_YAFFS_9BYTE_TAGS - etags->chunkDeleted = deleted; -#else - etags->chunkDeleted = (yaffs_CountBits(((__u8 *)&pt1)[8]) < 7); -#endif - return YAFFS_OK; -} - -/* Mark a block bad. - * - * This is a persistant state. - * Use of this function should be rare. - * - * Returns YAFFS_OK or YAFFS_FAIL. - */ -int nandmtd1_MarkNANDBlockBad(struct yaffs_DeviceStruct *dev, int blockNo) -{ - struct mtd_info * mtd = dev->genericDevice; - int blocksize = dev->nChunksPerBlock * dev->nDataBytesPerChunk; - int retval; - - yaffs_trace(YAFFS_TRACE_BAD_BLOCKS, "marking block %d bad", blockNo); - - retval = mtd->block_markbad(mtd, (loff_t)blocksize * blockNo); - return (retval) ? YAFFS_FAIL : YAFFS_OK; -} - -/* Check any MTD prerequists. - * - * Returns YAFFS_OK or YAFFS_FAIL. - */ -static int nandmtd1_TestPrerequists(struct mtd_info * mtd) -{ - /* 2.6.18 has mtd->ecclayout->oobavail */ - /* 2.6.21 has mtd->ecclayout->oobavail and mtd->oobavail */ - int oobavail = mtd->ecclayout->oobavail; - - if (oobavail < YTAG1_SIZE) { - yaffs_trace(YAFFS_TRACE_ERROR, - "mtd device has only %d bytes for tags, need %d", - oobavail, YTAG1_SIZE); - return YAFFS_FAIL; - } - return YAFFS_OK; -} - -/* Query for the current state of a specific block. - * - * Examine the tags of the first chunk of the block and return the state: - * - YAFFS_BLOCK_STATE_DEAD, the block is marked bad - * - YAFFS_BLOCK_STATE_NEEDS_SCANNING, the block is in use - * - YAFFS_BLOCK_STATE_EMPTY, the block is clean - * - * Always returns YAFFS_OK. - */ -int nandmtd1_QueryNANDBlock(struct yaffs_DeviceStruct *dev, int blockNo, - yaffs_BlockState * pState, int *pSequenceNumber) -{ - struct mtd_info * mtd = dev->genericDevice; - int chunkNo = blockNo * dev->nChunksPerBlock; - yaffs_ExtendedTags etags; - int state = YAFFS_BLOCK_STATE_DEAD; - int seqnum = 0; - int retval; - - /* We don't yet have a good place to test for MTD config prerequists. - * Do it here as we are called during the initial scan. - */ - if (nandmtd1_TestPrerequists(mtd) != YAFFS_OK) { - return YAFFS_FAIL; - } - - retval = nandmtd1_ReadChunkWithTagsFromNAND(dev, chunkNo, NULL, &etags); - if (etags.blockBad) { - yaffs_trace(YAFFS_TRACE_BAD_BLOCKS, - "block %d is marked bad", blockNo); - state = YAFFS_BLOCK_STATE_DEAD; - } - else if (etags.chunkUsed) { - state = YAFFS_BLOCK_STATE_NEEDS_SCANNING; - seqnum = etags.sequenceNumber; - } - else { - state = YAFFS_BLOCK_STATE_EMPTY; - } - - *pState = state; - *pSequenceNumber = seqnum; - - /* query always succeeds */ - return YAFFS_OK; -} - -#endif /*KERNEL_VERSION*/ - ---Boundary-00=_5LbTGmt62YoutxM-- - - - diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_mtdif1.c b/target/linux/generic/files/fs/yaffs2/yaffs_mtdif1.c index c069dfac79..ca7b0a3789 100644 --- a/target/linux/generic/files/fs/yaffs2/yaffs_mtdif1.c +++ b/target/linux/generic/files/fs/yaffs2/yaffs_mtdif1.c @@ -2,7 +2,7 @@ * YAFFS: Yet another FFS. A NAND-flash specific file system. * yaffs_mtdif1.c NAND mtd interface functions for small-page NAND. * - * Copyright (C) 2002 Aleph One Ltd. + * Copyright (C) 2002-2010 Aleph One Ltd. * for Toby Churchill Ltd and Brightstar Engineering * * This program is free software; you can redistribute it and/or modify @@ -18,15 +18,17 @@ * * These functions are invoked via function pointers in yaffs_nand.c. * This replaces functionality provided by functions in yaffs_mtdif.c - * and the yaffs_TagsCompatability functions in yaffs_tagscompat.c that are + * and the yaffs_tags_tCompatability functions in yaffs_tagscompat.c that are * called in yaffs_mtdif.c when the function pointers are NULL. - * We assume the MTD layer is performing ECC (useNANDECC is true). + * We assume the MTD layer is performing ECC (use_nand_ecc is true). */ #include "yportenv.h" +#include "yaffs_trace.h" #include "yaffs_guts.h" #include "yaffs_packedtags1.h" -#include "yaffs_tagscompat.h" /* for yaffs_CalcTagsECC */ +#include "yaffs_tagscompat.h" /* for yaffs_calc_tags_ecc */ +#include "yaffs_linux.h" #include "linux/kernel.h" #include "linux/version.h" @@ -36,8 +38,6 @@ /* Don't compile this module if we don't have MTD's mtd_oob_ops interface */ #if (MTD_VERSION_CODE > MTD_VERSION(2, 6, 17)) -const char *yaffs_mtdif1_c_version = "$Id: yaffs_mtdif1.c,v 1.10 2009-03-09 07:41:10 charles Exp $"; - #ifndef CONFIG_YAFFS_9BYTE_TAGS # define YTAG1_SIZE 8 #else @@ -51,12 +51,12 @@ const char *yaffs_mtdif1_c_version = "$Id: yaffs_mtdif1.c,v 1.10 2009-03-09 07:4 * adjust 'oobfree' to match your existing Yaffs data. * * This nand_ecclayout scatters/gathers to/from the old-yaffs layout with the - * pageStatus byte (at NAND spare offset 4) scattered/gathered from/to + * page_status byte (at NAND spare offset 4) scattered/gathered from/to * the 9th byte. * * Old-style on-NAND format: T0,T1,T2,T3,P,B,T4,T5,E0,E1,E2,T6,T7,E3,E4,E5 - * We have/need PackedTags1 plus pageStatus: T0,T1,T2,T3,T4,T5,T6,T7,P - * where Tn are the tag bytes, En are MTD's ECC bytes, P is the pageStatus + * We have/need PackedTags1 plus page_status: T0,T1,T2,T3,T4,T5,T6,T7,P + * where Tn are the tag bytes, En are MTD's ECC bytes, P is the page_status * byte and B is the small-page bad-block indicator byte. */ static struct nand_ecclayout nand_oob_16 = { @@ -88,42 +88,40 @@ static struct nand_ecclayout nand_oob_16 = { * Any underlying MTD error results in YAFFS_FAIL. * Returns YAFFS_OK or YAFFS_FAIL. */ -int nandmtd1_WriteChunkWithTagsToNAND(yaffs_Device *dev, - int chunkInNAND, const __u8 *data, const yaffs_ExtendedTags *etags) +int nandmtd1_WriteChunkWithTagsToNAND(yaffs_dev_t *dev, + int nand_chunk, const __u8 *data, const yaffs_ext_tags *etags) { - struct mtd_info *mtd = dev->genericDevice; - int chunkBytes = dev->nDataBytesPerChunk; - loff_t addr = ((loff_t)chunkInNAND) * chunkBytes; + struct mtd_info *mtd = yaffs_dev_to_mtd(dev); + int chunkBytes = dev->data_bytes_per_chunk; + loff_t addr = ((loff_t)nand_chunk) * chunkBytes; struct mtd_oob_ops ops; yaffs_PackedTags1 pt1; int retval; - /* we assume that PackedTags1 and yaffs_Tags are compatible */ + /* we assume that PackedTags1 and yaffs_tags_t are compatible */ compile_time_assertion(sizeof(yaffs_PackedTags1) == 12); - compile_time_assertion(sizeof(yaffs_Tags) == 8); - - dev->nPageWrites++; + compile_time_assertion(sizeof(yaffs_tags_t) == 8); yaffs_PackTags1(&pt1, etags); - yaffs_CalcTagsECC((yaffs_Tags *)&pt1); + yaffs_calc_tags_ecc((yaffs_tags_t *)&pt1); /* When deleting a chunk, the upper layer provides only skeletal - * etags, one with chunkDeleted set. However, we need to update the + * etags, one with is_deleted set. However, we need to update the * tags, not erase them completely. So we use the NAND write property * that only zeroed-bits stick and set tag bytes to all-ones and * zero just the (not) deleted bit. */ #ifndef CONFIG_YAFFS_9BYTE_TAGS - if (etags->chunkDeleted) { + if (etags->is_deleted) { memset(&pt1, 0xff, 8); /* clear delete status bit to indicate deleted */ pt1.deleted = 0; } #else ((__u8 *)&pt1)[8] = 0xff; - if (etags->chunkDeleted) { + if (etags->is_deleted) { memset(&pt1, 0xff, 8); - /* zero pageStatus byte to indicate deleted */ + /* zero page_status byte to indicate deleted */ ((__u8 *)&pt1)[8] = 0; } #endif @@ -137,20 +135,20 @@ int nandmtd1_WriteChunkWithTagsToNAND(yaffs_Device *dev, retval = mtd->write_oob(mtd, addr, &ops); if (retval) { - yaffs_trace(YAFFS_TRACE_MTD, - "write_oob failed, chunk %d, mtd error %d\n", - chunkInNAND, retval); + T(YAFFS_TRACE_MTD, + (TSTR("write_oob failed, chunk %d, mtd error %d"TENDSTR), + nand_chunk, retval)); } return retval ? YAFFS_FAIL : YAFFS_OK; } -/* Return with empty ExtendedTags but add eccResult. +/* Return with empty ExtendedTags but add ecc_result. */ -static int rettags(yaffs_ExtendedTags *etags, int eccResult, int retval) +static int rettags(yaffs_ext_tags *etags, int ecc_result, int retval) { if (etags) { memset(etags, 0, sizeof(*etags)); - etags->eccResult = eccResult; + etags->ecc_result = ecc_result; } return retval; } @@ -158,30 +156,28 @@ static int rettags(yaffs_ExtendedTags *etags, int eccResult, int retval) /* Read a chunk (page) from NAND. * * Caller expects ExtendedTags data to be usable even on error; that is, - * all members except eccResult and blockBad are zeroed. + * all members except ecc_result and block_bad are zeroed. * * - Check ECC results for data (if applicable) * - Check for blank/erased block (return empty ExtendedTags if blank) * - Check the PackedTags1 mini-ECC (correct if necessary/possible) * - Convert PackedTags1 to ExtendedTags - * - Update eccResult and blockBad members to refect state. + * - Update ecc_result and block_bad members to refect state. * * Returns YAFFS_OK or YAFFS_FAIL. */ -int nandmtd1_ReadChunkWithTagsFromNAND(yaffs_Device *dev, - int chunkInNAND, __u8 *data, yaffs_ExtendedTags *etags) +int nandmtd1_ReadChunkWithTagsFromNAND(yaffs_dev_t *dev, + int nand_chunk, __u8 *data, yaffs_ext_tags *etags) { - struct mtd_info *mtd = dev->genericDevice; - int chunkBytes = dev->nDataBytesPerChunk; - loff_t addr = ((loff_t)chunkInNAND) * chunkBytes; + struct mtd_info *mtd = yaffs_dev_to_mtd(dev); + int chunkBytes = dev->data_bytes_per_chunk; + loff_t addr = ((loff_t)nand_chunk) * chunkBytes; int eccres = YAFFS_ECC_RESULT_NO_ERROR; struct mtd_oob_ops ops; yaffs_PackedTags1 pt1; int retval; int deleted; - dev->nPageReads++; - memset(&ops, 0, sizeof(ops)); ops.mode = MTD_OOB_AUTO; ops.len = (data) ? chunkBytes : 0; @@ -200,9 +196,9 @@ int nandmtd1_ReadChunkWithTagsFromNAND(yaffs_Device *dev, */ retval = mtd->read_oob(mtd, addr, &ops); if (retval) { - yaffs_trace(YAFFS_TRACE_MTD, - "read_oob failed, chunk %d, mtd error %d\n", - chunkInNAND, retval); + T(YAFFS_TRACE_MTD, + (TSTR("read_oob failed, chunk %d, mtd error %d"TENDSTR), + nand_chunk, retval)); } switch (retval) { @@ -213,23 +209,23 @@ int nandmtd1_ReadChunkWithTagsFromNAND(yaffs_Device *dev, case -EUCLEAN: /* MTD's ECC fixed the data */ eccres = YAFFS_ECC_RESULT_FIXED; - dev->eccFixed++; + dev->n_ecc_fixed++; break; case -EBADMSG: /* MTD's ECC could not fix the data */ - dev->eccUnfixed++; + dev->n_ecc_unfixed++; /* fall into... */ default: rettags(etags, YAFFS_ECC_RESULT_UNFIXED, 0); - etags->blockBad = (mtd->block_isbad)(mtd, addr); + etags->block_bad = (mtd->block_isbad)(mtd, addr); return YAFFS_FAIL; } /* Check for a blank/erased chunk. */ - if (yaffs_CheckFF((__u8 *)&pt1, 8)) { - /* when blank, upper layers want eccResult to be <= NO_ERROR */ + if (yaffs_check_ff((__u8 *)&pt1, 8)) { + /* when blank, upper layers want ecc_result to be <= NO_ERROR */ return rettags(etags, YAFFS_ECC_RESULT_NO_ERROR, YAFFS_OK); } @@ -241,37 +237,37 @@ int nandmtd1_ReadChunkWithTagsFromNAND(yaffs_Device *dev, deleted = !pt1.deleted; pt1.deleted = 1; #else - deleted = (yaffs_CountBits(((__u8 *)&pt1)[8]) < 7); + deleted = (yaffs_count_bits(((__u8 *)&pt1)[8]) < 7); #endif /* Check the packed tags mini-ECC and correct if necessary/possible. */ - retval = yaffs_CheckECCOnTags((yaffs_Tags *)&pt1); + retval = yaffs_check_tags_ecc((yaffs_tags_t *)&pt1); switch (retval) { case 0: /* no tags error, use MTD result */ break; case 1: /* recovered tags-ECC error */ - dev->tagsEccFixed++; + dev->n_tags_ecc_fixed++; if (eccres == YAFFS_ECC_RESULT_NO_ERROR) eccres = YAFFS_ECC_RESULT_FIXED; break; default: /* unrecovered tags-ECC error */ - dev->tagsEccUnfixed++; + dev->n_tags_ecc_unfixed++; return rettags(etags, YAFFS_ECC_RESULT_UNFIXED, YAFFS_FAIL); } /* Unpack the tags to extended form and set ECC result. - * [set shouldBeFF just to keep yaffs_UnpackTags1 happy] + * [set shouldBeFF just to keep yaffs_unpack_tags1 happy] */ pt1.shouldBeFF = 0xFFFFFFFF; - yaffs_UnpackTags1(etags, &pt1); - etags->eccResult = eccres; + yaffs_unpack_tags1(etags, &pt1); + etags->ecc_result = eccres; /* Set deleted state */ - etags->chunkDeleted = deleted; + etags->is_deleted = deleted; return YAFFS_OK; } @@ -282,15 +278,15 @@ int nandmtd1_ReadChunkWithTagsFromNAND(yaffs_Device *dev, * * Returns YAFFS_OK or YAFFS_FAIL. */ -int nandmtd1_MarkNANDBlockBad(struct yaffs_DeviceStruct *dev, int blockNo) +int nandmtd1_MarkNANDBlockBad(struct yaffs_dev_s *dev, int block_no) { - struct mtd_info *mtd = dev->genericDevice; - int blocksize = dev->nChunksPerBlock * dev->nDataBytesPerChunk; + struct mtd_info *mtd = yaffs_dev_to_mtd(dev); + int blocksize = dev->param.chunks_per_block * dev->data_bytes_per_chunk; int retval; - yaffs_trace(YAFFS_TRACE_BAD_BLOCKS, "marking block %d bad\n", blockNo); + T(YAFFS_TRACE_BAD_BLOCKS,(TSTR("marking block %d bad"TENDSTR), block_no)); - retval = mtd->block_markbad(mtd, (loff_t)blocksize * blockNo); + retval = mtd->block_markbad(mtd, (loff_t)blocksize * block_no); return (retval) ? YAFFS_FAIL : YAFFS_OK; } @@ -305,9 +301,9 @@ static int nandmtd1_TestPrerequists(struct mtd_info *mtd) int oobavail = mtd->ecclayout->oobavail; if (oobavail < YTAG1_SIZE) { - yaffs_trace(YAFFS_TRACE_ERROR, - "mtd device has only %d bytes for tags, need %d\n", - oobavail, YTAG1_SIZE); + T(YAFFS_TRACE_ERROR, + (TSTR("mtd device has only %d bytes for tags, need %d"TENDSTR), + oobavail, YTAG1_SIZE)); return YAFFS_FAIL; } return YAFFS_OK; @@ -322,13 +318,13 @@ static int nandmtd1_TestPrerequists(struct mtd_info *mtd) * * Always returns YAFFS_OK. */ -int nandmtd1_QueryNANDBlock(struct yaffs_DeviceStruct *dev, int blockNo, - yaffs_BlockState *pState, __u32 *pSequenceNumber) +int nandmtd1_QueryNANDBlock(struct yaffs_dev_s *dev, int block_no, + yaffs_block_state_t *pState, __u32 *pSequenceNumber) { - struct mtd_info *mtd = dev->genericDevice; - int chunkNo = blockNo * dev->nChunksPerBlock; - loff_t addr = (loff_t)chunkNo * dev->nDataBytesPerChunk; - yaffs_ExtendedTags etags; + struct mtd_info *mtd = yaffs_dev_to_mtd(dev); + int chunkNo = block_no * dev->param.chunks_per_block; + loff_t addr = (loff_t)chunkNo * dev->data_bytes_per_chunk; + yaffs_ext_tags etags; int state = YAFFS_BLOCK_STATE_DEAD; int seqnum = 0; int retval; @@ -340,17 +336,17 @@ int nandmtd1_QueryNANDBlock(struct yaffs_DeviceStruct *dev, int blockNo, return YAFFS_FAIL; retval = nandmtd1_ReadChunkWithTagsFromNAND(dev, chunkNo, NULL, &etags); - etags.blockBad = (mtd->block_isbad)(mtd, addr); - if (etags.blockBad) { - yaffs_trace(YAFFS_TRACE_BAD_BLOCKS, - "block %d is marked bad\n", blockNo); + etags.block_bad = (mtd->block_isbad)(mtd, addr); + if (etags.block_bad) { + T(YAFFS_TRACE_BAD_BLOCKS, + (TSTR("block %d is marked bad"TENDSTR), block_no)); state = YAFFS_BLOCK_STATE_DEAD; - } else if (etags.eccResult != YAFFS_ECC_RESULT_NO_ERROR) { + } else if (etags.ecc_result != YAFFS_ECC_RESULT_NO_ERROR) { /* bad tags, need to look more closely */ state = YAFFS_BLOCK_STATE_NEEDS_SCANNING; - } else if (etags.chunkUsed) { + } else if (etags.chunk_used) { state = YAFFS_BLOCK_STATE_NEEDS_SCANNING; - seqnum = etags.sequenceNumber; + seqnum = etags.seq_number; } else { state = YAFFS_BLOCK_STATE_EMPTY; } diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_mtdif1.h b/target/linux/generic/files/fs/yaffs2/yaffs_mtdif1.h index 240202cdf7..1b2befe3c8 100644 --- a/target/linux/generic/files/fs/yaffs2/yaffs_mtdif1.h +++ b/target/linux/generic/files/fs/yaffs2/yaffs_mtdif1.h @@ -1,7 +1,7 @@ /* * YAFFS: Yet another Flash File System. A NAND-flash specific file system. * - * Copyright (C) 2002-2007 Aleph One Ltd. + * Copyright (C) 2002-2010 Aleph One Ltd. * for Toby Churchill Ltd and Brightstar Engineering * * This program is free software; you can redistribute it and/or modify @@ -14,15 +14,15 @@ #ifndef __YAFFS_MTDIF1_H__ #define __YAFFS_MTDIF1_H__ -int nandmtd1_WriteChunkWithTagsToNAND(yaffs_Device *dev, int chunkInNAND, - const __u8 *data, const yaffs_ExtendedTags *tags); +int nandmtd1_WriteChunkWithTagsToNAND(yaffs_dev_t *dev, int nand_chunk, + const __u8 *data, const yaffs_ext_tags *tags); -int nandmtd1_ReadChunkWithTagsFromNAND(yaffs_Device *dev, int chunkInNAND, - __u8 *data, yaffs_ExtendedTags *tags); +int nandmtd1_ReadChunkWithTagsFromNAND(yaffs_dev_t *dev, int nand_chunk, + __u8 *data, yaffs_ext_tags *tags); -int nandmtd1_MarkNANDBlockBad(struct yaffs_DeviceStruct *dev, int blockNo); +int nandmtd1_MarkNANDBlockBad(struct yaffs_dev_s *dev, int block_no); -int nandmtd1_QueryNANDBlock(struct yaffs_DeviceStruct *dev, int blockNo, - yaffs_BlockState *state, __u32 *sequenceNumber); +int nandmtd1_QueryNANDBlock(struct yaffs_dev_s *dev, int block_no, + yaffs_block_state_t *state, __u32 *seq_number); #endif diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_mtdif2.c b/target/linux/generic/files/fs/yaffs2/yaffs_mtdif2.c index 77504babb7..c6ebdaa703 100644 --- a/target/linux/generic/files/fs/yaffs2/yaffs_mtdif2.c +++ b/target/linux/generic/files/fs/yaffs2/yaffs_mtdif2.c @@ -1,7 +1,7 @@ /* * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. * - * Copyright (C) 2002-2007 Aleph One Ltd. + * Copyright (C) 2002-2010 Aleph One Ltd. * for Toby Churchill Ltd and Brightstar Engineering * * Created by Charles Manning <charles@aleph1.co.uk> @@ -13,11 +13,8 @@ /* mtd interface for YAFFS2 */ -const char *yaffs_mtdif2_c_version = - "$Id: yaffs_mtdif2.c,v 1.23 2009-03-06 17:20:53 wookey Exp $"; - #include "yportenv.h" - +#include "yaffs_trace.h" #include "yaffs_mtdif2.h" @@ -27,15 +24,17 @@ const char *yaffs_mtdif2_c_version = #include "yaffs_packedtags2.h" +#include "yaffs_linux.h" + /* NB For use with inband tags.... * We assume that the data buffer is of size totalBytersPerChunk so that we can also * use it to load the tags. */ -int nandmtd2_WriteChunkWithTagsToNAND(yaffs_Device *dev, int chunkInNAND, +int nandmtd2_WriteChunkWithTagsToNAND(yaffs_dev_t *dev, int nand_chunk, const __u8 *data, - const yaffs_ExtendedTags *tags) + const yaffs_ext_tags *tags) { - struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice); + struct mtd_info *mtd = yaffs_dev_to_mtd(dev); #if (MTD_VERSION_CODE > MTD_VERSION(2, 6, 17)) struct mtd_oob_ops ops; #else @@ -47,13 +46,16 @@ int nandmtd2_WriteChunkWithTagsToNAND(yaffs_Device *dev, int chunkInNAND, yaffs_PackedTags2 pt; + int packed_tags_size = dev->param.no_tags_ecc ? sizeof(pt.t) : sizeof(pt); + void * packed_tags_ptr = dev->param.no_tags_ecc ? (void *) &pt.t : (void *)&pt; + T(YAFFS_TRACE_MTD, (TSTR ("nandmtd2_WriteChunkWithTagsToNAND chunk %d data %p tags %p" - TENDSTR), chunkInNAND, data, tags)); + TENDSTR), nand_chunk, data, tags)); - addr = ((loff_t) chunkInNAND) * dev->totalBytesPerChunk; + addr = ((loff_t) nand_chunk) * dev->param.total_bytes_per_chunk; /* For yaffs2 writing there must be both data and tags. * If we're using inband tags, then the tags are stuffed into @@ -61,30 +63,30 @@ int nandmtd2_WriteChunkWithTagsToNAND(yaffs_Device *dev, int chunkInNAND, */ if (!data || !tags) BUG(); - else if (dev->inbandTags) { + else if (dev->param.inband_tags) { yaffs_PackedTags2TagsPart *pt2tp; - pt2tp = (yaffs_PackedTags2TagsPart *)(data + dev->nDataBytesPerChunk); + pt2tp = (yaffs_PackedTags2TagsPart *)(data + dev->data_bytes_per_chunk); yaffs_PackTags2TagsPart(pt2tp, tags); } else - yaffs_PackTags2(&pt, tags); + yaffs_PackTags2(&pt, tags, !dev->param.no_tags_ecc); #if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) ops.mode = MTD_OOB_AUTO; - ops.ooblen = (dev->inbandTags) ? 0 : sizeof(pt); - ops.len = dev->totalBytesPerChunk; + ops.ooblen = (dev->param.inband_tags) ? 0 : packed_tags_size; + ops.len = dev->param.total_bytes_per_chunk; ops.ooboffs = 0; ops.datbuf = (__u8 *)data; - ops.oobbuf = (dev->inbandTags) ? NULL : (void *)&pt; + ops.oobbuf = (dev->param.inband_tags) ? NULL : packed_tags_ptr; retval = mtd->write_oob(mtd, addr, &ops); #else - if (!dev->inbandTags) { + if (!dev->param.inband_tags) { retval = - mtd->write_ecc(mtd, addr, dev->nDataBytesPerChunk, - &dummy, data, (__u8 *) &pt, NULL); + mtd->write_ecc(mtd, addr, dev->data_bytes_per_chunk, + &dummy, data, (__u8 *) packed_tags_ptr, NULL); } else { retval = - mtd->write(mtd, addr, dev->totalBytesPerChunk, &dummy, + mtd->write(mtd, addr, dev->param.total_bytes_per_chunk, &dummy, data); } #endif @@ -95,10 +97,10 @@ int nandmtd2_WriteChunkWithTagsToNAND(yaffs_Device *dev, int chunkInNAND, return YAFFS_FAIL; } -int nandmtd2_ReadChunkWithTagsFromNAND(yaffs_Device *dev, int chunkInNAND, - __u8 *data, yaffs_ExtendedTags *tags) +int nandmtd2_ReadChunkWithTagsFromNAND(yaffs_dev_t *dev, int nand_chunk, + __u8 *data, yaffs_ext_tags *tags) { - struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice); + struct mtd_info *mtd = yaffs_dev_to_mtd(dev); #if (MTD_VERSION_CODE > MTD_VERSION(2, 6, 17)) struct mtd_oob_ops ops; #endif @@ -106,20 +108,23 @@ int nandmtd2_ReadChunkWithTagsFromNAND(yaffs_Device *dev, int chunkInNAND, int retval = 0; int localData = 0; - loff_t addr = ((loff_t) chunkInNAND) * dev->totalBytesPerChunk; + loff_t addr = ((loff_t) nand_chunk) * dev->param.total_bytes_per_chunk; yaffs_PackedTags2 pt; + int packed_tags_size = dev->param.no_tags_ecc ? sizeof(pt.t) : sizeof(pt); + void * packed_tags_ptr = dev->param.no_tags_ecc ? (void *) &pt.t: (void *)&pt; + T(YAFFS_TRACE_MTD, (TSTR ("nandmtd2_ReadChunkWithTagsFromNAND chunk %d data %p tags %p" - TENDSTR), chunkInNAND, data, tags)); + TENDSTR), nand_chunk, data, tags)); - if (dev->inbandTags) { + if (dev->param.inband_tags) { if (!data) { localData = 1; - data = yaffs_GetTempBuffer(dev, __LINE__); + data = yaffs_get_temp_buffer(dev, __LINE__); } @@ -127,30 +132,30 @@ int nandmtd2_ReadChunkWithTagsFromNAND(yaffs_Device *dev, int chunkInNAND, #if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) - if (dev->inbandTags || (data && !tags)) - retval = mtd->read(mtd, addr, dev->totalBytesPerChunk, + if (dev->param.inband_tags || (data && !tags)) + retval = mtd->read(mtd, addr, dev->param.total_bytes_per_chunk, &dummy, data); else if (tags) { ops.mode = MTD_OOB_AUTO; - ops.ooblen = sizeof(pt); - ops.len = data ? dev->nDataBytesPerChunk : sizeof(pt); + ops.ooblen = packed_tags_size; + ops.len = data ? dev->data_bytes_per_chunk : packed_tags_size; ops.ooboffs = 0; ops.datbuf = data; - ops.oobbuf = dev->spareBuffer; + ops.oobbuf = yaffs_dev_to_lc(dev)->spareBuffer; retval = mtd->read_oob(mtd, addr, &ops); } #else - if (!dev->inbandTags && data && tags) { + if (!dev->param.inband_tags && data && tags) { - retval = mtd->read_ecc(mtd, addr, dev->nDataBytesPerChunk, + retval = mtd->read_ecc(mtd, addr, dev->data_bytes_per_chunk, &dummy, data, dev->spareBuffer, NULL); } else { if (data) retval = - mtd->read(mtd, addr, dev->nDataBytesPerChunk, &dummy, + mtd->read(mtd, addr, dev->data_bytes_per_chunk, &dummy, data); - if (!dev->inbandTags && tags) + if (!dev->param.inband_tags && tags) retval = mtd->read_oob(mtd, addr, mtd->oobsize, &dummy, dev->spareBuffer); @@ -158,41 +163,47 @@ int nandmtd2_ReadChunkWithTagsFromNAND(yaffs_Device *dev, int chunkInNAND, #endif - if (dev->inbandTags) { + if (dev->param.inband_tags) { if (tags) { yaffs_PackedTags2TagsPart *pt2tp; - pt2tp = (yaffs_PackedTags2TagsPart *)&data[dev->nDataBytesPerChunk]; - yaffs_UnpackTags2TagsPart(tags, pt2tp); + pt2tp = (yaffs_PackedTags2TagsPart *)&data[dev->data_bytes_per_chunk]; + yaffs_unpack_tags2tags_part(tags, pt2tp); } } else { if (tags) { - memcpy(&pt, dev->spareBuffer, sizeof(pt)); - yaffs_UnpackTags2(tags, &pt); + memcpy(packed_tags_ptr, yaffs_dev_to_lc(dev)->spareBuffer, packed_tags_size); + yaffs_unpack_tags2(tags, &pt, !dev->param.no_tags_ecc); } } if (localData) - yaffs_ReleaseTempBuffer(dev, data, __LINE__); + yaffs_release_temp_buffer(dev, data, __LINE__); - if (tags && retval == -EBADMSG && tags->eccResult == YAFFS_ECC_RESULT_NO_ERROR) - tags->eccResult = YAFFS_ECC_RESULT_UNFIXED; + if (tags && retval == -EBADMSG && tags->ecc_result == YAFFS_ECC_RESULT_NO_ERROR) { + tags->ecc_result = YAFFS_ECC_RESULT_UNFIXED; + dev->n_ecc_unfixed++; + } + if(tags && retval == -EUCLEAN && tags->ecc_result == YAFFS_ECC_RESULT_NO_ERROR) { + tags->ecc_result = YAFFS_ECC_RESULT_FIXED; + dev->n_ecc_fixed++; + } if (retval == 0) return YAFFS_OK; else return YAFFS_FAIL; } -int nandmtd2_MarkNANDBlockBad(struct yaffs_DeviceStruct *dev, int blockNo) +int nandmtd2_MarkNANDBlockBad(struct yaffs_dev_s *dev, int block_no) { - struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice); + struct mtd_info *mtd = yaffs_dev_to_mtd(dev); int retval; T(YAFFS_TRACE_MTD, - (TSTR("nandmtd2_MarkNANDBlockBad %d" TENDSTR), blockNo)); + (TSTR("nandmtd2_MarkNANDBlockBad %d" TENDSTR), block_no)); retval = mtd->block_markbad(mtd, - blockNo * dev->nChunksPerBlock * - dev->totalBytesPerChunk); + block_no * dev->param.chunks_per_block * + dev->param.total_bytes_per_chunk); if (retval == 0) return YAFFS_OK; @@ -201,41 +212,41 @@ int nandmtd2_MarkNANDBlockBad(struct yaffs_DeviceStruct *dev, int blockNo) } -int nandmtd2_QueryNANDBlock(struct yaffs_DeviceStruct *dev, int blockNo, - yaffs_BlockState *state, __u32 *sequenceNumber) +int nandmtd2_QueryNANDBlock(struct yaffs_dev_s *dev, int block_no, + yaffs_block_state_t *state, __u32 *seq_number) { - struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice); + struct mtd_info *mtd = yaffs_dev_to_mtd(dev); int retval; T(YAFFS_TRACE_MTD, - (TSTR("nandmtd2_QueryNANDBlock %d" TENDSTR), blockNo)); + (TSTR("nandmtd2_QueryNANDBlock %d" TENDSTR), block_no)); retval = mtd->block_isbad(mtd, - blockNo * dev->nChunksPerBlock * - dev->totalBytesPerChunk); + block_no * dev->param.chunks_per_block * + dev->param.total_bytes_per_chunk); if (retval) { T(YAFFS_TRACE_MTD, (TSTR("block is bad" TENDSTR))); *state = YAFFS_BLOCK_STATE_DEAD; - *sequenceNumber = 0; + *seq_number = 0; } else { - yaffs_ExtendedTags t; + yaffs_ext_tags t; nandmtd2_ReadChunkWithTagsFromNAND(dev, - blockNo * - dev->nChunksPerBlock, NULL, + block_no * + dev->param.chunks_per_block, NULL, &t); - if (t.chunkUsed) { - *sequenceNumber = t.sequenceNumber; + if (t.chunk_used) { + *seq_number = t.seq_number; *state = YAFFS_BLOCK_STATE_NEEDS_SCANNING; } else { - *sequenceNumber = 0; + *seq_number = 0; *state = YAFFS_BLOCK_STATE_EMPTY; } } T(YAFFS_TRACE_MTD, - (TSTR("block is bad seq %d state %d" TENDSTR), *sequenceNumber, + (TSTR("block is bad seq %d state %d" TENDSTR), *seq_number, *state)); if (retval == 0) diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_mtdif2.h b/target/linux/generic/files/fs/yaffs2/yaffs_mtdif2.h index b5ff07881f..31c821690a 100644 --- a/target/linux/generic/files/fs/yaffs2/yaffs_mtdif2.h +++ b/target/linux/generic/files/fs/yaffs2/yaffs_mtdif2.h @@ -1,7 +1,7 @@ /* * YAFFS: Yet another Flash File System . A NAND-flash specific file system. * - * Copyright (C) 2002-2007 Aleph One Ltd. + * Copyright (C) 2002-2010 Aleph One Ltd. * for Toby Churchill Ltd and Brightstar Engineering * * Created by Charles Manning <charles@aleph1.co.uk> @@ -17,13 +17,13 @@ #define __YAFFS_MTDIF2_H__ #include "yaffs_guts.h" -int nandmtd2_WriteChunkWithTagsToNAND(yaffs_Device *dev, int chunkInNAND, +int nandmtd2_WriteChunkWithTagsToNAND(yaffs_dev_t *dev, int nand_chunk, const __u8 *data, - const yaffs_ExtendedTags *tags); -int nandmtd2_ReadChunkWithTagsFromNAND(yaffs_Device *dev, int chunkInNAND, - __u8 *data, yaffs_ExtendedTags *tags); -int nandmtd2_MarkNANDBlockBad(struct yaffs_DeviceStruct *dev, int blockNo); -int nandmtd2_QueryNANDBlock(struct yaffs_DeviceStruct *dev, int blockNo, - yaffs_BlockState *state, __u32 *sequenceNumber); + const yaffs_ext_tags *tags); +int nandmtd2_ReadChunkWithTagsFromNAND(yaffs_dev_t *dev, int nand_chunk, + __u8 *data, yaffs_ext_tags *tags); +int nandmtd2_MarkNANDBlockBad(struct yaffs_dev_s *dev, int block_no); +int nandmtd2_QueryNANDBlock(struct yaffs_dev_s *dev, int block_no, + yaffs_block_state_t *state, __u32 *seq_number); #endif diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_nameval.c b/target/linux/generic/files/fs/yaffs2/yaffs_nameval.c new file mode 100644 index 0000000000..a4ed297352 --- /dev/null +++ b/target/linux/generic/files/fs/yaffs2/yaffs_nameval.c @@ -0,0 +1,197 @@ +/* + * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. + * + * Copyright (C) 2002-2010 Aleph One Ltd. + * for Toby Churchill Ltd and Brightstar Engineering + * + * Created by Charles Manning <charles@aleph1.co.uk> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +/* + * This simple implementation of a name-value store assumes a small number of values and fits + * into a small finite buffer. + * + * Each attribute is stored as a record: + * sizeof(int) bytes record size. + * strnlen+1 bytes name null terminated. + * nbytes value. + * ---------- + * total size stored in record size + * + * This code has not been tested with unicode yet. + */ + + +#include "yaffs_nameval.h" + +#include "yportenv.h" + +static int nval_find(const char *xb, int xb_size, const YCHAR *name, + int *exist_size) +{ + int pos=0; + int size; + + memcpy(&size,xb,sizeof(int)); + while(size > 0 && (size < xb_size) && (pos + size < xb_size)){ + if(yaffs_strncmp((YCHAR *)(xb+pos+sizeof(int)),name,size) == 0){ + if(exist_size) + *exist_size = size; + return pos; + } + pos += size; + if(pos < xb_size -sizeof(int)) + memcpy(&size,xb + pos,sizeof(int)); + else + size = 0; + } + if(exist_size) + *exist_size = 0; + return -1; +} + +static int nval_used(const char *xb, int xb_size) +{ + int pos=0; + int size; + + memcpy(&size,xb + pos,sizeof(int)); + while(size > 0 && (size < xb_size) && (pos + size < xb_size)){ + pos += size; + if(pos < xb_size -sizeof(int)) + memcpy(&size,xb + pos,sizeof(int)); + else + size = 0; + } + return pos; +} + +int nval_del(char *xb, int xb_size, const YCHAR *name) +{ + int pos = nval_find(xb, xb_size, name, NULL); + int size; + + if(pos >= 0 && pos < xb_size){ + /* Find size, shift rest over this record, then zero out the rest of buffer */ + memcpy(&size,xb+pos,sizeof(int)); + memcpy(xb + pos, xb + pos + size, xb_size - (pos + size)); + memset(xb + (xb_size - size),0,size); + return 0; + } else + return -ENODATA; +} + +int nval_set(char *xb, int xb_size, const YCHAR *name, const char *buf, int bsize, int flags) +{ + int pos; + int namelen = yaffs_strnlen(name,xb_size); + int reclen; + int size_exist = 0; + int space; + int start; + + pos = nval_find(xb,xb_size,name, &size_exist); + + if(flags & XATTR_CREATE && pos >= 0) + return -EEXIST; + if(flags & XATTR_REPLACE && pos < 0) + return -ENODATA; + + start = nval_used(xb,xb_size); + space = xb_size - start + size_exist; + + reclen = (sizeof(int) + namelen + 1 + bsize); + + if(reclen > space) + return -ENOSPC; + + if(pos >= 0){ + nval_del(xb,xb_size,name); + start = nval_used(xb, xb_size); + } + + pos = start; + + memcpy(xb + pos,&reclen,sizeof(int)); + pos +=sizeof(int); + yaffs_strncpy((YCHAR *)(xb + pos), name, reclen); + pos+= (namelen+1); + memcpy(xb + pos,buf,bsize); + return 0; +} + +int nval_get(const char *xb, int xb_size, const YCHAR *name, char *buf, int bsize) +{ + int pos = nval_find(xb,xb_size,name,NULL); + int size; + + if(pos >= 0 && pos< xb_size){ + + memcpy(&size,xb +pos,sizeof(int)); + pos+=sizeof(int); /* advance past record length */ + size -= sizeof(int); + + /* Advance over name string */ + while(xb[pos] && size > 0 && pos < xb_size){ + pos++; + size--; + } + /*Advance over NUL */ + pos++; + size--; + + if(size <= bsize){ + memcpy(buf,xb + pos,size); + return size; + } + + } + if(pos >= 0) + return -ERANGE; + else + return -ENODATA; +} + +int nval_list(const char *xb, int xb_size, char *buf, int bsize) +{ + int pos = 0; + int size; + int name_len; + int ncopied = 0; + int filled = 0; + + memcpy(&size,xb + pos,sizeof(int)); + while(size > sizeof(int) && size <= xb_size && (pos + size) < xb_size && !filled){ + pos+= sizeof(int); + size-=sizeof(int); + name_len = yaffs_strnlen((YCHAR *)(xb + pos), size); + if(ncopied + name_len + 1 < bsize){ + memcpy(buf,xb+pos,name_len * sizeof(YCHAR)); + buf+= name_len; + *buf = '\0'; + buf++; + if(sizeof(YCHAR) > 1){ + *buf = '\0'; + buf++; + } + ncopied += (name_len+1); + } else + filled = 1; + pos+=size; + if(pos < xb_size -sizeof(int)) + memcpy(&size,xb + pos,sizeof(int)); + else + size = 0; + } + return ncopied; +} + + +int nval_hasvalues(const char *xb, int xb_size) +{ + return nval_used(xb, xb_size) > 0; +} diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_nameval.h b/target/linux/generic/files/fs/yaffs2/yaffs_nameval.h new file mode 100644 index 0000000000..4255f3b053 --- /dev/null +++ b/target/linux/generic/files/fs/yaffs2/yaffs_nameval.h @@ -0,0 +1,25 @@ +/* + * YAFFS: Yet another Flash File System . A NAND-flash specific file system. + * + * Copyright (C) 2002-2010 Aleph One Ltd. + * for Toby Churchill Ltd and Brightstar Engineering + * + * Created by Charles Manning <charles@aleph1.co.uk> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License version 2.1 as + * published by the Free Software Foundation. + * + * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL. + */ +#ifndef __NAMEVAL_H__ +#define __NAMEVAL_H__ + +#include "yportenv.h" + +int nval_del(char *xb, int xb_size, const YCHAR *name); +int nval_set(char *xb, int xb_size, const YCHAR *name, const char *buf, int bsize, int flags); +int nval_get(const char *xb, int xb_size, const YCHAR *name, char *buf, int bsize); +int nval_list(const char *xb, int xb_size, char *buf, int bsize); +int nval_hasvalues(const char *xb, int xb_size); +#endif diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_nand.c b/target/linux/generic/files/fs/yaffs2/yaffs_nand.c index bd815cb7af..d1fe84af8c 100644 --- a/target/linux/generic/files/fs/yaffs2/yaffs_nand.c +++ b/target/linux/generic/files/fs/yaffs2/yaffs_nand.c @@ -1,7 +1,7 @@ /* * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. * - * Copyright (C) 2002-2007 Aleph One Ltd. + * Copyright (C) 2002-2010 Aleph One Ltd. * for Toby Churchill Ltd and Brightstar Engineering * * Created by Charles Manning <charles@aleph1.co.uk> @@ -11,124 +11,129 @@ * published by the Free Software Foundation. */ -const char *yaffs_nand_c_version = - "$Id: yaffs_nand.c,v 1.10 2009-03-06 17:20:54 wookey Exp $"; - #include "yaffs_nand.h" #include "yaffs_tagscompat.h" #include "yaffs_tagsvalidity.h" #include "yaffs_getblockinfo.h" -int yaffs_ReadChunkWithTagsFromNAND(yaffs_Device *dev, int chunkInNAND, +int yaffs_rd_chunk_tags_nand(yaffs_dev_t *dev, int nand_chunk, __u8 *buffer, - yaffs_ExtendedTags *tags) + yaffs_ext_tags *tags) { int result; - yaffs_ExtendedTags localTags; + yaffs_ext_tags localTags; + + int realignedChunkInNAND = nand_chunk - dev->chunk_offset; - int realignedChunkInNAND = chunkInNAND - dev->chunkOffset; + dev->n_page_reads++; /* If there are no tags provided, use local tags to get prioritised gc working */ if (!tags) tags = &localTags; - if (dev->readChunkWithTagsFromNAND) - result = dev->readChunkWithTagsFromNAND(dev, realignedChunkInNAND, buffer, + if (dev->param.read_chunk_tags_fn) + result = dev->param.read_chunk_tags_fn(dev, realignedChunkInNAND, buffer, tags); else - result = yaffs_TagsCompatabilityReadChunkWithTagsFromNAND(dev, + result = yaffs_tags_compat_rd(dev, realignedChunkInNAND, buffer, tags); if (tags && - tags->eccResult > YAFFS_ECC_RESULT_NO_ERROR) { + tags->ecc_result > YAFFS_ECC_RESULT_NO_ERROR) { - yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, chunkInNAND/dev->nChunksPerBlock); - yaffs_HandleChunkError(dev, bi); + yaffs_block_info_t *bi; + bi = yaffs_get_block_info(dev, nand_chunk/dev->param.chunks_per_block); + yaffs_handle_chunk_error(dev, bi); } return result; } -int yaffs_WriteChunkWithTagsToNAND(yaffs_Device *dev, - int chunkInNAND, +int yaffs_wr_chunk_tags_nand(yaffs_dev_t *dev, + int nand_chunk, const __u8 *buffer, - yaffs_ExtendedTags *tags) + yaffs_ext_tags *tags) { - chunkInNAND -= dev->chunkOffset; + + dev->n_page_writes++; + + nand_chunk -= dev->chunk_offset; if (tags) { - tags->sequenceNumber = dev->sequenceNumber; - tags->chunkUsed = 1; - if (!yaffs_ValidateTags(tags)) { + tags->seq_number = dev->seq_number; + tags->chunk_used = 1; + if (!yaffs_validate_tags(tags)) { T(YAFFS_TRACE_ERROR, (TSTR("Writing uninitialised tags" TENDSTR))); YBUG(); } T(YAFFS_TRACE_WRITE, - (TSTR("Writing chunk %d tags %d %d" TENDSTR), chunkInNAND, - tags->objectId, tags->chunkId)); + (TSTR("Writing chunk %d tags %d %d" TENDSTR), nand_chunk, + tags->obj_id, tags->chunk_id)); } else { T(YAFFS_TRACE_ERROR, (TSTR("Writing with no tags" TENDSTR))); YBUG(); } - if (dev->writeChunkWithTagsToNAND) - return dev->writeChunkWithTagsToNAND(dev, chunkInNAND, buffer, + if (dev->param.write_chunk_tags_fn) + return dev->param.write_chunk_tags_fn(dev, nand_chunk, buffer, tags); else - return yaffs_TagsCompatabilityWriteChunkWithTagsToNAND(dev, - chunkInNAND, + return yaffs_tags_compat_wr(dev, + nand_chunk, buffer, tags); } -int yaffs_MarkBlockBad(yaffs_Device *dev, int blockNo) +int yaffs_mark_bad(yaffs_dev_t *dev, int block_no) { - blockNo -= dev->blockOffset; + block_no -= dev->block_offset; + -; - if (dev->markNANDBlockBad) - return dev->markNANDBlockBad(dev, blockNo); + if (dev->param.bad_block_fn) + return dev->param.bad_block_fn(dev, block_no); else - return yaffs_TagsCompatabilityMarkNANDBlockBad(dev, blockNo); + return yaffs_tags_compat_mark_bad(dev, block_no); } -int yaffs_QueryInitialBlockState(yaffs_Device *dev, - int blockNo, - yaffs_BlockState *state, - __u32 *sequenceNumber) +int yaffs_query_init_block_state(yaffs_dev_t *dev, + int block_no, + yaffs_block_state_t *state, + __u32 *seq_number) { - blockNo -= dev->blockOffset; + block_no -= dev->block_offset; - if (dev->queryNANDBlock) - return dev->queryNANDBlock(dev, blockNo, state, sequenceNumber); + if (dev->param.query_block_fn) + return dev->param.query_block_fn(dev, block_no, state, seq_number); else - return yaffs_TagsCompatabilityQueryNANDBlock(dev, blockNo, + return yaffs_tags_compat_query_block(dev, block_no, state, - sequenceNumber); + seq_number); } -int yaffs_EraseBlockInNAND(struct yaffs_DeviceStruct *dev, - int blockInNAND) +int yaffs_erase_block(struct yaffs_dev_s *dev, + int flash_block) { int result; - blockInNAND -= dev->blockOffset; + flash_block -= dev->block_offset; + dev->n_erasures++; - dev->nBlockErasures++; - result = dev->eraseBlockInNAND(dev, blockInNAND); + result = dev->param.erase_fn(dev, flash_block); return result; } -int yaffs_InitialiseNAND(struct yaffs_DeviceStruct *dev) +int yaffs_init_nand(struct yaffs_dev_s *dev) { - return dev->initialiseNAND(dev); + if(dev->param.initialise_flash_fn) + return dev->param.initialise_flash_fn(dev); + return YAFFS_OK; } diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_nand.h b/target/linux/generic/files/fs/yaffs2/yaffs_nand.h index e013cdc2f5..24cd147af8 100644 --- a/target/linux/generic/files/fs/yaffs2/yaffs_nand.h +++ b/target/linux/generic/files/fs/yaffs2/yaffs_nand.h @@ -1,7 +1,7 @@ /* * YAFFS: Yet another Flash File System . A NAND-flash specific file system. * - * Copyright (C) 2002-2007 Aleph One Ltd. + * Copyright (C) 2002-2010 Aleph One Ltd. * for Toby Churchill Ltd and Brightstar Engineering * * Created by Charles Manning <charles@aleph1.co.uk> @@ -19,26 +19,26 @@ -int yaffs_ReadChunkWithTagsFromNAND(yaffs_Device *dev, int chunkInNAND, +int yaffs_rd_chunk_tags_nand(yaffs_dev_t *dev, int nand_chunk, __u8 *buffer, - yaffs_ExtendedTags *tags); + yaffs_ext_tags *tags); -int yaffs_WriteChunkWithTagsToNAND(yaffs_Device *dev, - int chunkInNAND, +int yaffs_wr_chunk_tags_nand(yaffs_dev_t *dev, + int nand_chunk, const __u8 *buffer, - yaffs_ExtendedTags *tags); + yaffs_ext_tags *tags); -int yaffs_MarkBlockBad(yaffs_Device *dev, int blockNo); +int yaffs_mark_bad(yaffs_dev_t *dev, int block_no); -int yaffs_QueryInitialBlockState(yaffs_Device *dev, - int blockNo, - yaffs_BlockState *state, - unsigned *sequenceNumber); +int yaffs_query_init_block_state(yaffs_dev_t *dev, + int block_no, + yaffs_block_state_t *state, + unsigned *seq_number); -int yaffs_EraseBlockInNAND(struct yaffs_DeviceStruct *dev, - int blockInNAND); +int yaffs_erase_block(struct yaffs_dev_s *dev, + int flash_block); -int yaffs_InitialiseNAND(struct yaffs_DeviceStruct *dev); +int yaffs_init_nand(struct yaffs_dev_s *dev); #endif diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_nandemul2k.h b/target/linux/generic/files/fs/yaffs2/yaffs_nandemul2k.h index 41bc2b5f8b..30b7cbdcf4 100644 --- a/target/linux/generic/files/fs/yaffs2/yaffs_nandemul2k.h +++ b/target/linux/generic/files/fs/yaffs2/yaffs_nandemul2k.h @@ -1,7 +1,7 @@ /* * YAFFS: Yet another Flash File System . A NAND-flash specific file system. * - * Copyright (C) 2002-2007 Aleph One Ltd. + * Copyright (C) 2002-2010 Aleph One Ltd. * for Toby Churchill Ltd and Brightstar Engineering * * Created by Charles Manning <charles@aleph1.co.uk> @@ -20,18 +20,18 @@ #include "yaffs_guts.h" -int nandemul2k_WriteChunkWithTagsToNAND(struct yaffs_DeviceStruct *dev, - int chunkInNAND, const __u8 *data, - const yaffs_ExtendedTags *tags); -int nandemul2k_ReadChunkWithTagsFromNAND(struct yaffs_DeviceStruct *dev, - int chunkInNAND, __u8 *data, - yaffs_ExtendedTags *tags); -int nandemul2k_MarkNANDBlockBad(struct yaffs_DeviceStruct *dev, int blockNo); -int nandemul2k_QueryNANDBlock(struct yaffs_DeviceStruct *dev, int blockNo, - yaffs_BlockState *state, __u32 *sequenceNumber); -int nandemul2k_EraseBlockInNAND(struct yaffs_DeviceStruct *dev, - int blockInNAND); -int nandemul2k_InitialiseNAND(struct yaffs_DeviceStruct *dev); +int nandemul2k_WriteChunkWithTagsToNAND(struct yaffs_dev_s *dev, + int nand_chunk, const __u8 *data, + const yaffs_ext_tags *tags); +int nandemul2k_ReadChunkWithTagsFromNAND(struct yaffs_dev_s *dev, + int nand_chunk, __u8 *data, + yaffs_ext_tags *tags); +int nandemul2k_MarkNANDBlockBad(struct yaffs_dev_s *dev, int block_no); +int nandemul2k_QueryNANDBlock(struct yaffs_dev_s *dev, int block_no, + yaffs_block_state_t *state, __u32 *seq_number); +int nandemul2k_EraseBlockInNAND(struct yaffs_dev_s *dev, + int flash_block); +int nandemul2k_InitialiseNAND(struct yaffs_dev_s *dev); int nandemul2k_GetBytesPerChunk(void); int nandemul2k_GetChunksPerBlock(void); int nandemul2k_GetNumberOfBlocks(void); diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_packedtags1.c b/target/linux/generic/files/fs/yaffs2/yaffs_packedtags1.c index 3e67e69166..3ad49a941f 100644 --- a/target/linux/generic/files/fs/yaffs2/yaffs_packedtags1.c +++ b/target/linux/generic/files/fs/yaffs2/yaffs_packedtags1.c @@ -1,7 +1,7 @@ /* * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. * - * Copyright (C) 2002-2007 Aleph One Ltd. + * Copyright (C) 2002-2010 Aleph One Ltd. * for Toby Churchill Ltd and Brightstar Engineering * * Created by Charles Manning <charles@aleph1.co.uk> @@ -14,37 +14,37 @@ #include "yaffs_packedtags1.h" #include "yportenv.h" -void yaffs_PackTags1(yaffs_PackedTags1 *pt, const yaffs_ExtendedTags *t) +void yaffs_PackTags1(yaffs_PackedTags1 *pt, const yaffs_ext_tags *t) { - pt->chunkId = t->chunkId; - pt->serialNumber = t->serialNumber; - pt->byteCount = t->byteCount; - pt->objectId = t->objectId; + pt->chunk_id = t->chunk_id; + pt->serial_number = t->serial_number; + pt->n_bytes = t->n_bytes; + pt->obj_id = t->obj_id; pt->ecc = 0; - pt->deleted = (t->chunkDeleted) ? 0 : 1; + pt->deleted = (t->is_deleted) ? 0 : 1; pt->unusedStuff = 0; pt->shouldBeFF = 0xFFFFFFFF; } -void yaffs_UnpackTags1(yaffs_ExtendedTags *t, const yaffs_PackedTags1 *pt) +void yaffs_unpack_tags1(yaffs_ext_tags *t, const yaffs_PackedTags1 *pt) { static const __u8 allFF[] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }; if (memcmp(allFF, pt, sizeof(yaffs_PackedTags1))) { - t->blockBad = 0; + t->block_bad = 0; if (pt->shouldBeFF != 0xFFFFFFFF) - t->blockBad = 1; - t->chunkUsed = 1; - t->objectId = pt->objectId; - t->chunkId = pt->chunkId; - t->byteCount = pt->byteCount; - t->eccResult = YAFFS_ECC_RESULT_NO_ERROR; - t->chunkDeleted = (pt->deleted) ? 0 : 1; - t->serialNumber = pt->serialNumber; + t->block_bad = 1; + t->chunk_used = 1; + t->obj_id = pt->obj_id; + t->chunk_id = pt->chunk_id; + t->n_bytes = pt->n_bytes; + t->ecc_result = YAFFS_ECC_RESULT_NO_ERROR; + t->is_deleted = (pt->deleted) ? 0 : 1; + t->serial_number = pt->serial_number; } else { - memset(t, 0, sizeof(yaffs_ExtendedTags)); + memset(t, 0, sizeof(yaffs_ext_tags)); } } diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_packedtags1.h b/target/linux/generic/files/fs/yaffs2/yaffs_packedtags1.h index f8c0471d4a..881cc75f30 100644 --- a/target/linux/generic/files/fs/yaffs2/yaffs_packedtags1.h +++ b/target/linux/generic/files/fs/yaffs2/yaffs_packedtags1.h @@ -1,7 +1,7 @@ /* * YAFFS: Yet another Flash File System . A NAND-flash specific file system. * - * Copyright (C) 2002-2007 Aleph One Ltd. + * Copyright (C) 2002-2010 Aleph One Ltd. * for Toby Churchill Ltd and Brightstar Engineering * * Created by Charles Manning <charles@aleph1.co.uk> @@ -21,10 +21,10 @@ #include "yaffs_guts.h" typedef struct { - unsigned chunkId:20; - unsigned serialNumber:2; - unsigned byteCount:10; - unsigned objectId:18; + unsigned chunk_id:20; + unsigned serial_number:2; + unsigned n_bytes:10; + unsigned obj_id:18; unsigned ecc:12; unsigned deleted:1; unsigned unusedStuff:1; @@ -32,6 +32,6 @@ typedef struct { } yaffs_PackedTags1; -void yaffs_PackTags1(yaffs_PackedTags1 *pt, const yaffs_ExtendedTags *t); -void yaffs_UnpackTags1(yaffs_ExtendedTags *t, const yaffs_PackedTags1 *pt); +void yaffs_PackTags1(yaffs_PackedTags1 *pt, const yaffs_ext_tags *t); +void yaffs_unpack_tags1(yaffs_ext_tags *t, const yaffs_PackedTags1 *pt); #endif diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_packedtags2.c b/target/linux/generic/files/fs/yaffs2/yaffs_packedtags2.c index a78c03c9d6..6b854cb0eb 100644 --- a/target/linux/generic/files/fs/yaffs2/yaffs_packedtags2.c +++ b/target/linux/generic/files/fs/yaffs2/yaffs_packedtags2.c @@ -1,7 +1,7 @@ /* * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. * - * Copyright (C) 2002-2007 Aleph One Ltd. + * Copyright (C) 2002-2010 Aleph One Ltd. * for Toby Churchill Ltd and Brightstar Engineering * * Created by Charles Manning <charles@aleph1.co.uk> @@ -13,6 +13,7 @@ #include "yaffs_packedtags2.h" #include "yportenv.h" +#include "yaffs_trace.h" #include "yaffs_tagsvalidity.h" /* This code packs a set of extended tags into a binary structure for @@ -24,7 +25,7 @@ * This is defined by having the EXTRA_HEADER_INFO_FLAG set. */ -/* Extra flags applied to chunkId */ +/* Extra flags applied to chunk_id */ #define EXTRA_HEADER_INFO_FLAG 0x80000000 #define EXTRA_SHRINK_FLAG 0x40000000 @@ -42,53 +43,53 @@ static void yaffs_DumpPackedTags2TagsPart(const yaffs_PackedTags2TagsPart *ptt) { T(YAFFS_TRACE_MTD, (TSTR("packed tags obj %d chunk %d byte %d seq %d" TENDSTR), - ptt->objectId, ptt->chunkId, ptt->byteCount, - ptt->sequenceNumber)); + ptt->obj_id, ptt->chunk_id, ptt->n_bytes, + ptt->seq_number)); } static void yaffs_DumpPackedTags2(const yaffs_PackedTags2 *pt) { yaffs_DumpPackedTags2TagsPart(&pt->t); } -static void yaffs_DumpTags2(const yaffs_ExtendedTags *t) +static void yaffs_DumpTags2(const yaffs_ext_tags *t) { T(YAFFS_TRACE_MTD, (TSTR ("ext.tags eccres %d blkbad %d chused %d obj %d chunk%d byte %d del %d ser %d seq %d" - TENDSTR), t->eccResult, t->blockBad, t->chunkUsed, t->objectId, - t->chunkId, t->byteCount, t->chunkDeleted, t->serialNumber, - t->sequenceNumber)); + TENDSTR), t->ecc_result, t->block_bad, t->chunk_used, t->obj_id, + t->chunk_id, t->n_bytes, t->is_deleted, t->serial_number, + t->seq_number)); } void yaffs_PackTags2TagsPart(yaffs_PackedTags2TagsPart *ptt, - const yaffs_ExtendedTags *t) + const yaffs_ext_tags *t) { - ptt->chunkId = t->chunkId; - ptt->sequenceNumber = t->sequenceNumber; - ptt->byteCount = t->byteCount; - ptt->objectId = t->objectId; + ptt->chunk_id = t->chunk_id; + ptt->seq_number = t->seq_number; + ptt->n_bytes = t->n_bytes; + ptt->obj_id = t->obj_id; - if (t->chunkId == 0 && t->extraHeaderInfoAvailable) { + if (t->chunk_id == 0 && t->extra_available) { /* Store the extra header info instead */ - /* We save the parent object in the chunkId */ - ptt->chunkId = EXTRA_HEADER_INFO_FLAG - | t->extraParentObjectId; - if (t->extraIsShrinkHeader) - ptt->chunkId |= EXTRA_SHRINK_FLAG; - if (t->extraShadows) - ptt->chunkId |= EXTRA_SHADOWS_FLAG; - - ptt->objectId &= ~EXTRA_OBJECT_TYPE_MASK; - ptt->objectId |= - (t->extraObjectType << EXTRA_OBJECT_TYPE_SHIFT); - - if (t->extraObjectType == YAFFS_OBJECT_TYPE_HARDLINK) - ptt->byteCount = t->extraEquivalentObjectId; - else if (t->extraObjectType == YAFFS_OBJECT_TYPE_FILE) - ptt->byteCount = t->extraFileLength; + /* We save the parent object in the chunk_id */ + ptt->chunk_id = EXTRA_HEADER_INFO_FLAG + | t->extra_parent_id; + if (t->extra_is_shrink) + ptt->chunk_id |= EXTRA_SHRINK_FLAG; + if (t->extra_shadows) + ptt->chunk_id |= EXTRA_SHADOWS_FLAG; + + ptt->obj_id &= ~EXTRA_OBJECT_TYPE_MASK; + ptt->obj_id |= + (t->extra_obj_type << EXTRA_OBJECT_TYPE_SHIFT); + + if (t->extra_obj_type == YAFFS_OBJECT_TYPE_HARDLINK) + ptt->n_bytes = t->extra_equiv_id; + else if (t->extra_obj_type == YAFFS_OBJECT_TYPE_FILE) + ptt->n_bytes = t->extra_length; else - ptt->byteCount = 0; + ptt->n_bytes = 0; } yaffs_DumpPackedTags2TagsPart(ptt); @@ -96,59 +97,56 @@ void yaffs_PackTags2TagsPart(yaffs_PackedTags2TagsPart *ptt, } -void yaffs_PackTags2(yaffs_PackedTags2 *pt, const yaffs_ExtendedTags *t) +void yaffs_PackTags2(yaffs_PackedTags2 *pt, const yaffs_ext_tags *t, int tagsECC) { yaffs_PackTags2TagsPart(&pt->t, t); -#ifndef YAFFS_IGNORE_TAGS_ECC - { - yaffs_ECCCalculateOther((unsigned char *)&pt->t, + if(tagsECC) + yaffs_ecc_calc_other((unsigned char *)&pt->t, sizeof(yaffs_PackedTags2TagsPart), &pt->ecc); - } -#endif } -void yaffs_UnpackTags2TagsPart(yaffs_ExtendedTags *t, +void yaffs_unpack_tags2tags_part(yaffs_ext_tags *t, yaffs_PackedTags2TagsPart *ptt) { - memset(t, 0, sizeof(yaffs_ExtendedTags)); + memset(t, 0, sizeof(yaffs_ext_tags)); - yaffs_InitialiseTags(t); + yaffs_init_tags(t); - if (ptt->sequenceNumber != 0xFFFFFFFF) { - t->blockBad = 0; - t->chunkUsed = 1; - t->objectId = ptt->objectId; - t->chunkId = ptt->chunkId; - t->byteCount = ptt->byteCount; - t->chunkDeleted = 0; - t->serialNumber = 0; - t->sequenceNumber = ptt->sequenceNumber; + if (ptt->seq_number != 0xFFFFFFFF) { + t->block_bad = 0; + t->chunk_used = 1; + t->obj_id = ptt->obj_id; + t->chunk_id = ptt->chunk_id; + t->n_bytes = ptt->n_bytes; + t->is_deleted = 0; + t->serial_number = 0; + t->seq_number = ptt->seq_number; /* Do extra header info stuff */ - if (ptt->chunkId & EXTRA_HEADER_INFO_FLAG) { - t->chunkId = 0; - t->byteCount = 0; - - t->extraHeaderInfoAvailable = 1; - t->extraParentObjectId = - ptt->chunkId & (~(ALL_EXTRA_FLAGS)); - t->extraIsShrinkHeader = - (ptt->chunkId & EXTRA_SHRINK_FLAG) ? 1 : 0; - t->extraShadows = - (ptt->chunkId & EXTRA_SHADOWS_FLAG) ? 1 : 0; - t->extraObjectType = - ptt->objectId >> EXTRA_OBJECT_TYPE_SHIFT; - t->objectId &= ~EXTRA_OBJECT_TYPE_MASK; - - if (t->extraObjectType == YAFFS_OBJECT_TYPE_HARDLINK) - t->extraEquivalentObjectId = ptt->byteCount; + if (ptt->chunk_id & EXTRA_HEADER_INFO_FLAG) { + t->chunk_id = 0; + t->n_bytes = 0; + + t->extra_available = 1; + t->extra_parent_id = + ptt->chunk_id & (~(ALL_EXTRA_FLAGS)); + t->extra_is_shrink = + (ptt->chunk_id & EXTRA_SHRINK_FLAG) ? 1 : 0; + t->extra_shadows = + (ptt->chunk_id & EXTRA_SHADOWS_FLAG) ? 1 : 0; + t->extra_obj_type = + ptt->obj_id >> EXTRA_OBJECT_TYPE_SHIFT; + t->obj_id &= ~EXTRA_OBJECT_TYPE_MASK; + + if (t->extra_obj_type == YAFFS_OBJECT_TYPE_HARDLINK) + t->extra_equiv_id = ptt->n_bytes; else - t->extraFileLength = ptt->byteCount; + t->extra_length = ptt->n_bytes; } } @@ -158,49 +156,43 @@ void yaffs_UnpackTags2TagsPart(yaffs_ExtendedTags *t, } -void yaffs_UnpackTags2(yaffs_ExtendedTags *t, yaffs_PackedTags2 *pt) +void yaffs_unpack_tags2(yaffs_ext_tags *t, yaffs_PackedTags2 *pt, int tagsECC) { - yaffs_ECCResult eccResult = YAFFS_ECC_RESULT_NO_ERROR; - - if (pt->t.sequenceNumber != 0xFFFFFFFF) { - /* Page is in use */ -#ifndef YAFFS_IGNORE_TAGS_ECC - { - yaffs_ECCOther ecc; - int result; - yaffs_ECCCalculateOther((unsigned char *)&pt->t, - sizeof - (yaffs_PackedTags2TagsPart), - &ecc); - result = - yaffs_ECCCorrectOther((unsigned char *)&pt->t, - sizeof - (yaffs_PackedTags2TagsPart), - &pt->ecc, &ecc); - switch (result) { + yaffs_ecc_result ecc_result = YAFFS_ECC_RESULT_NO_ERROR; + + if (pt->t.seq_number != 0xFFFFFFFF && + tagsECC){ + /* Chunk is in use and we need to do ECC */ + + yaffs_ECCOther ecc; + int result; + yaffs_ecc_calc_other((unsigned char *)&pt->t, + sizeof(yaffs_PackedTags2TagsPart), + &ecc); + result = yaffs_ecc_correct_other((unsigned char *)&pt->t, + sizeof(yaffs_PackedTags2TagsPart), + &pt->ecc, &ecc); + switch (result) { case 0: - eccResult = YAFFS_ECC_RESULT_NO_ERROR; + ecc_result = YAFFS_ECC_RESULT_NO_ERROR; break; case 1: - eccResult = YAFFS_ECC_RESULT_FIXED; + ecc_result = YAFFS_ECC_RESULT_FIXED; break; case -1: - eccResult = YAFFS_ECC_RESULT_UNFIXED; + ecc_result = YAFFS_ECC_RESULT_UNFIXED; break; default: - eccResult = YAFFS_ECC_RESULT_UNKNOWN; - } + ecc_result = YAFFS_ECC_RESULT_UNKNOWN; } -#endif } - yaffs_UnpackTags2TagsPart(t, &pt->t); + yaffs_unpack_tags2tags_part(t, &pt->t); - t->eccResult = eccResult; + t->ecc_result = ecc_result; yaffs_DumpPackedTags2(pt); yaffs_DumpTags2(t); - } diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_packedtags2.h b/target/linux/generic/files/fs/yaffs2/yaffs_packedtags2.h index ec30f843bc..70bd3c9606 100644 --- a/target/linux/generic/files/fs/yaffs2/yaffs_packedtags2.h +++ b/target/linux/generic/files/fs/yaffs2/yaffs_packedtags2.h @@ -1,7 +1,7 @@ /* * YAFFS: Yet another Flash File System . A NAND-flash specific file system. * - * Copyright (C) 2002-2007 Aleph One Ltd. + * Copyright (C) 2002-2010 Aleph One Ltd. * for Toby Churchill Ltd and Brightstar Engineering * * Created by Charles Manning <charles@aleph1.co.uk> @@ -22,10 +22,10 @@ #include "yaffs_ecc.h" typedef struct { - unsigned sequenceNumber; - unsigned objectId; - unsigned chunkId; - unsigned byteCount; + unsigned seq_number; + unsigned obj_id; + unsigned chunk_id; + unsigned n_bytes; } yaffs_PackedTags2TagsPart; typedef struct { @@ -34,10 +34,10 @@ typedef struct { } yaffs_PackedTags2; /* Full packed tags with ECC, used for oob tags */ -void yaffs_PackTags2(yaffs_PackedTags2 *pt, const yaffs_ExtendedTags *t); -void yaffs_UnpackTags2(yaffs_ExtendedTags *t, yaffs_PackedTags2 *pt); +void yaffs_PackTags2(yaffs_PackedTags2 *pt, const yaffs_ext_tags *t, int tagsECC); +void yaffs_unpack_tags2(yaffs_ext_tags *t, yaffs_PackedTags2 *pt, int tagsECC); /* Only the tags part (no ECC for use with inband tags */ -void yaffs_PackTags2TagsPart(yaffs_PackedTags2TagsPart *pt, const yaffs_ExtendedTags *t); -void yaffs_UnpackTags2TagsPart(yaffs_ExtendedTags *t, yaffs_PackedTags2TagsPart *pt); +void yaffs_PackTags2TagsPart(yaffs_PackedTags2TagsPart *pt, const yaffs_ext_tags *t); +void yaffs_unpack_tags2tags_part(yaffs_ext_tags *t, yaffs_PackedTags2TagsPart *pt); #endif diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_qsort.h b/target/linux/generic/files/fs/yaffs2/yaffs_qsort.h index 941c7a87ca..4a4981b3f9 100644 --- a/target/linux/generic/files/fs/yaffs2/yaffs_qsort.h +++ b/target/linux/generic/files/fs/yaffs2/yaffs_qsort.h @@ -1,7 +1,7 @@ /* * YAFFS: Yet another Flash File System . A NAND-flash specific file system. * - * Copyright (C) 2002-2007 Aleph One Ltd. + * Copyright (C) 2002-2010 Aleph One Ltd. * for Toby Churchill Ltd and Brightstar Engineering * * Created by Charles Manning <charles@aleph1.co.uk> @@ -17,7 +17,18 @@ #ifndef __YAFFS_QSORT_H__ #define __YAFFS_QSORT_H__ +#ifdef __KERNEL__ +#include <linux/sort.h> + +extern void yaffs_qsort(void *const base, size_t total_elems, size_t size, + int (*cmp)(const void *, const void *)){ + sort(base, total_elems, size, cmp, NULL); +} + +#else + extern void yaffs_qsort(void *const base, size_t total_elems, size_t size, int (*cmp)(const void *, const void *)); #endif +#endif diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_tagscompat.c b/target/linux/generic/files/fs/yaffs2/yaffs_tagscompat.c index 402537fb4e..c04a2fb3bd 100644 --- a/target/linux/generic/files/fs/yaffs2/yaffs_tagscompat.c +++ b/target/linux/generic/files/fs/yaffs2/yaffs_tagscompat.c @@ -1,7 +1,7 @@ /* * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. * - * Copyright (C) 2002-2007 Aleph One Ltd. + * Copyright (C) 2002-2010 Aleph One Ltd. * for Toby Churchill Ltd and Brightstar Engineering * * Created by Charles Manning <charles@aleph1.co.uk> @@ -15,19 +15,20 @@ #include "yaffs_tagscompat.h" #include "yaffs_ecc.h" #include "yaffs_getblockinfo.h" +#include "yaffs_trace.h" -static void yaffs_HandleReadDataError(yaffs_Device *dev, int chunkInNAND); +static void yaffs_handle_rd_data_error(yaffs_dev_t *dev, int nand_chunk); #ifdef NOTYET -static void yaffs_CheckWrittenBlock(yaffs_Device *dev, int chunkInNAND); -static void yaffs_HandleWriteChunkOk(yaffs_Device *dev, int chunkInNAND, +static void yaffs_check_written_block(yaffs_dev_t *dev, int nand_chunk); +static void yaffs_handle_chunk_wr_ok(yaffs_dev_t *dev, int nand_chunk, const __u8 *data, - const yaffs_Spare *spare); -static void yaffs_HandleUpdateChunk(yaffs_Device *dev, int chunkInNAND, - const yaffs_Spare *spare); -static void yaffs_HandleWriteChunkError(yaffs_Device *dev, int chunkInNAND); + const yaffs_spare *spare); +static void yaffs_handle_chunk_update(yaffs_dev_t *dev, int nand_chunk, + const yaffs_spare *spare); +static void yaffs_handle_chunk_wr_error(yaffs_dev_t *dev, int nand_chunk); #endif -static const char yaffs_countBitsTable[256] = { +static const char yaffs_count_bits_table[256] = { 0, 1, 1, 2, 1, 2, 2, 3, 1, 2, 2, 3, 2, 3, 3, 4, 1, 2, 2, 3, 2, 3, 3, 4, 2, 3, 3, 4, 3, 4, 4, 5, 1, 2, 2, 3, 2, 3, 3, 4, 2, 3, 3, 4, 3, 4, 4, 5, @@ -46,26 +47,26 @@ static const char yaffs_countBitsTable[256] = { 4, 5, 5, 6, 5, 6, 6, 7, 5, 6, 6, 7, 6, 7, 7, 8 }; -int yaffs_CountBits(__u8 x) +int yaffs_count_bits(__u8 x) { int retVal; - retVal = yaffs_countBitsTable[x]; + retVal = yaffs_count_bits_table[x]; return retVal; } /********** Tags ECC calculations *********/ -void yaffs_CalcECC(const __u8 *data, yaffs_Spare *spare) +void yaffs_calc_ecc(const __u8 *data, yaffs_spare *spare) { - yaffs_ECCCalculate(data, spare->ecc1); - yaffs_ECCCalculate(&data[256], spare->ecc2); + yaffs_ecc_cacl(data, spare->ecc1); + yaffs_ecc_cacl(&data[256], spare->ecc2); } -void yaffs_CalcTagsECC(yaffs_Tags *tags) +void yaffs_calc_tags_ecc(yaffs_tags_t *tags) { /* Calculate an ecc */ - unsigned char *b = ((yaffs_TagsUnion *) tags)->asBytes; + unsigned char *b = ((yaffs_tags_union_t *) tags)->as_bytes; unsigned i, j; unsigned ecc = 0; unsigned bit = 0; @@ -84,24 +85,24 @@ void yaffs_CalcTagsECC(yaffs_Tags *tags) } -int yaffs_CheckECCOnTags(yaffs_Tags *tags) +int yaffs_check_tags_ecc(yaffs_tags_t *tags) { unsigned ecc = tags->ecc; - yaffs_CalcTagsECC(tags); + yaffs_calc_tags_ecc(tags); ecc ^= tags->ecc; if (ecc && ecc <= 64) { /* TODO: Handle the failure better. Retire? */ - unsigned char *b = ((yaffs_TagsUnion *) tags)->asBytes; + unsigned char *b = ((yaffs_tags_union_t *) tags)->as_bytes; ecc--; b[ecc / 8] ^= (1 << (ecc & 7)); /* Now recvalc the ecc */ - yaffs_CalcTagsECC(tags); + yaffs_calc_tags_ecc(tags); return 1; /* recovered error */ } else if (ecc) { @@ -115,76 +116,73 @@ int yaffs_CheckECCOnTags(yaffs_Tags *tags) /********** Tags **********/ -static void yaffs_LoadTagsIntoSpare(yaffs_Spare *sparePtr, - yaffs_Tags *tagsPtr) +static void yaffs_load_tags_to_spare(yaffs_spare *sparePtr, + yaffs_tags_t *tagsPtr) { - yaffs_TagsUnion *tu = (yaffs_TagsUnion *) tagsPtr; - - yaffs_CalcTagsECC(tagsPtr); - - sparePtr->tagByte0 = tu->asBytes[0]; - sparePtr->tagByte1 = tu->asBytes[1]; - sparePtr->tagByte2 = tu->asBytes[2]; - sparePtr->tagByte3 = tu->asBytes[3]; - sparePtr->tagByte4 = tu->asBytes[4]; - sparePtr->tagByte5 = tu->asBytes[5]; - sparePtr->tagByte6 = tu->asBytes[6]; - sparePtr->tagByte7 = tu->asBytes[7]; + yaffs_tags_union_t *tu = (yaffs_tags_union_t *) tagsPtr; + + yaffs_calc_tags_ecc(tagsPtr); + + sparePtr->tb0 = tu->as_bytes[0]; + sparePtr->tb1 = tu->as_bytes[1]; + sparePtr->tb2 = tu->as_bytes[2]; + sparePtr->tb3 = tu->as_bytes[3]; + sparePtr->tb4 = tu->as_bytes[4]; + sparePtr->tb5 = tu->as_bytes[5]; + sparePtr->tb6 = tu->as_bytes[6]; + sparePtr->tb7 = tu->as_bytes[7]; } -static void yaffs_GetTagsFromSpare(yaffs_Device *dev, yaffs_Spare *sparePtr, - yaffs_Tags *tagsPtr) +static void yaffs_get_tags_from_spare(yaffs_dev_t *dev, yaffs_spare *sparePtr, + yaffs_tags_t *tagsPtr) { - yaffs_TagsUnion *tu = (yaffs_TagsUnion *) tagsPtr; + yaffs_tags_union_t *tu = (yaffs_tags_union_t *) tagsPtr; int result; - tu->asBytes[0] = sparePtr->tagByte0; - tu->asBytes[1] = sparePtr->tagByte1; - tu->asBytes[2] = sparePtr->tagByte2; - tu->asBytes[3] = sparePtr->tagByte3; - tu->asBytes[4] = sparePtr->tagByte4; - tu->asBytes[5] = sparePtr->tagByte5; - tu->asBytes[6] = sparePtr->tagByte6; - tu->asBytes[7] = sparePtr->tagByte7; + tu->as_bytes[0] = sparePtr->tb0; + tu->as_bytes[1] = sparePtr->tb1; + tu->as_bytes[2] = sparePtr->tb2; + tu->as_bytes[3] = sparePtr->tb3; + tu->as_bytes[4] = sparePtr->tb4; + tu->as_bytes[5] = sparePtr->tb5; + tu->as_bytes[6] = sparePtr->tb6; + tu->as_bytes[7] = sparePtr->tb7; - result = yaffs_CheckECCOnTags(tagsPtr); + result = yaffs_check_tags_ecc(tagsPtr); if (result > 0) - dev->tagsEccFixed++; + dev->n_tags_ecc_fixed++; else if (result < 0) - dev->tagsEccUnfixed++; + dev->n_tags_ecc_unfixed++; } -static void yaffs_SpareInitialise(yaffs_Spare *spare) +static void yaffs_spare_init(yaffs_spare *spare) { - memset(spare, 0xFF, sizeof(yaffs_Spare)); + memset(spare, 0xFF, sizeof(yaffs_spare)); } -static int yaffs_WriteChunkToNAND(struct yaffs_DeviceStruct *dev, - int chunkInNAND, const __u8 *data, - yaffs_Spare *spare) +static int yaffs_wr_nand(struct yaffs_dev_s *dev, + int nand_chunk, const __u8 *data, + yaffs_spare *spare) { - if (chunkInNAND < dev->startBlock * dev->nChunksPerBlock) { + if (nand_chunk < dev->param.start_block * dev->param.chunks_per_block) { T(YAFFS_TRACE_ERROR, (TSTR("**>> yaffs chunk %d is not valid" TENDSTR), - chunkInNAND)); + nand_chunk)); return YAFFS_FAIL; } - dev->nPageWrites++; - return dev->writeChunkToNAND(dev, chunkInNAND, data, spare); + return dev->param.write_chunk_fn(dev, nand_chunk, data, spare); } -static int yaffs_ReadChunkFromNAND(struct yaffs_DeviceStruct *dev, - int chunkInNAND, +static int yaffs_rd_chunk_nand(struct yaffs_dev_s *dev, + int nand_chunk, __u8 *data, - yaffs_Spare *spare, - yaffs_ECCResult *eccResult, + yaffs_spare *spare, + yaffs_ecc_result *ecc_result, int doErrorCorrection) { int retVal; - yaffs_Spare localSpare; - - dev->nPageReads++; + yaffs_spare localSpare; if (!spare && data) { /* If we don't have a real spare, then we use a local one. */ @@ -192,107 +190,107 @@ static int yaffs_ReadChunkFromNAND(struct yaffs_DeviceStruct *dev, spare = &localSpare; } - if (!dev->useNANDECC) { - retVal = dev->readChunkFromNAND(dev, chunkInNAND, data, spare); + if (!dev->param.use_nand_ecc) { + retVal = dev->param.read_chunk_fn(dev, nand_chunk, data, spare); if (data && doErrorCorrection) { /* Do ECC correction */ /* Todo handle any errors */ - int eccResult1, eccResult2; + int ecc_result1, ecc_result2; __u8 calcEcc[3]; - yaffs_ECCCalculate(data, calcEcc); - eccResult1 = - yaffs_ECCCorrect(data, spare->ecc1, calcEcc); - yaffs_ECCCalculate(&data[256], calcEcc); - eccResult2 = - yaffs_ECCCorrect(&data[256], spare->ecc2, calcEcc); + yaffs_ecc_cacl(data, calcEcc); + ecc_result1 = + yaffs_ecc_correct(data, spare->ecc1, calcEcc); + yaffs_ecc_cacl(&data[256], calcEcc); + ecc_result2 = + yaffs_ecc_correct(&data[256], spare->ecc2, calcEcc); - if (eccResult1 > 0) { + if (ecc_result1 > 0) { T(YAFFS_TRACE_ERROR, (TSTR ("**>>yaffs ecc error fix performed on chunk %d:0" - TENDSTR), chunkInNAND)); - dev->eccFixed++; - } else if (eccResult1 < 0) { + TENDSTR), nand_chunk)); + dev->n_ecc_fixed++; + } else if (ecc_result1 < 0) { T(YAFFS_TRACE_ERROR, (TSTR ("**>>yaffs ecc error unfixed on chunk %d:0" - TENDSTR), chunkInNAND)); - dev->eccUnfixed++; + TENDSTR), nand_chunk)); + dev->n_ecc_unfixed++; } - if (eccResult2 > 0) { + if (ecc_result2 > 0) { T(YAFFS_TRACE_ERROR, (TSTR ("**>>yaffs ecc error fix performed on chunk %d:1" - TENDSTR), chunkInNAND)); - dev->eccFixed++; - } else if (eccResult2 < 0) { + TENDSTR), nand_chunk)); + dev->n_ecc_fixed++; + } else if (ecc_result2 < 0) { T(YAFFS_TRACE_ERROR, (TSTR ("**>>yaffs ecc error unfixed on chunk %d:1" - TENDSTR), chunkInNAND)); - dev->eccUnfixed++; + TENDSTR), nand_chunk)); + dev->n_ecc_unfixed++; } - if (eccResult1 || eccResult2) { + if (ecc_result1 || ecc_result2) { /* We had a data problem on this page */ - yaffs_HandleReadDataError(dev, chunkInNAND); + yaffs_handle_rd_data_error(dev, nand_chunk); } - if (eccResult1 < 0 || eccResult2 < 0) - *eccResult = YAFFS_ECC_RESULT_UNFIXED; - else if (eccResult1 > 0 || eccResult2 > 0) - *eccResult = YAFFS_ECC_RESULT_FIXED; + if (ecc_result1 < 0 || ecc_result2 < 0) + *ecc_result = YAFFS_ECC_RESULT_UNFIXED; + else if (ecc_result1 > 0 || ecc_result2 > 0) + *ecc_result = YAFFS_ECC_RESULT_FIXED; else - *eccResult = YAFFS_ECC_RESULT_NO_ERROR; + *ecc_result = YAFFS_ECC_RESULT_NO_ERROR; } } else { /* Must allocate enough memory for spare+2*sizeof(int) */ /* for ecc results from device. */ - struct yaffs_NANDSpare nspare; + struct yaffs_nand_spare nspare; memset(&nspare, 0, sizeof(nspare)); - retVal = dev->readChunkFromNAND(dev, chunkInNAND, data, - (yaffs_Spare *) &nspare); - memcpy(spare, &nspare, sizeof(yaffs_Spare)); + retVal = dev->param.read_chunk_fn(dev, nand_chunk, data, + (yaffs_spare *) &nspare); + memcpy(spare, &nspare, sizeof(yaffs_spare)); if (data && doErrorCorrection) { if (nspare.eccres1 > 0) { T(YAFFS_TRACE_ERROR, (TSTR ("**>>mtd ecc error fix performed on chunk %d:0" - TENDSTR), chunkInNAND)); + TENDSTR), nand_chunk)); } else if (nspare.eccres1 < 0) { T(YAFFS_TRACE_ERROR, (TSTR ("**>>mtd ecc error unfixed on chunk %d:0" - TENDSTR), chunkInNAND)); + TENDSTR), nand_chunk)); } if (nspare.eccres2 > 0) { T(YAFFS_TRACE_ERROR, (TSTR ("**>>mtd ecc error fix performed on chunk %d:1" - TENDSTR), chunkInNAND)); + TENDSTR), nand_chunk)); } else if (nspare.eccres2 < 0) { T(YAFFS_TRACE_ERROR, (TSTR ("**>>mtd ecc error unfixed on chunk %d:1" - TENDSTR), chunkInNAND)); + TENDSTR), nand_chunk)); } if (nspare.eccres1 || nspare.eccres2) { /* We had a data problem on this page */ - yaffs_HandleReadDataError(dev, chunkInNAND); + yaffs_handle_rd_data_error(dev, nand_chunk); } if (nspare.eccres1 < 0 || nspare.eccres2 < 0) - *eccResult = YAFFS_ECC_RESULT_UNFIXED; + *ecc_result = YAFFS_ECC_RESULT_UNFIXED; else if (nspare.eccres1 > 0 || nspare.eccres2 > 0) - *eccResult = YAFFS_ECC_RESULT_FIXED; + *ecc_result = YAFFS_ECC_RESULT_FIXED; else - *eccResult = YAFFS_ECC_RESULT_NO_ERROR; + *ecc_result = YAFFS_ECC_RESULT_NO_ERROR; } } @@ -300,17 +298,17 @@ static int yaffs_ReadChunkFromNAND(struct yaffs_DeviceStruct *dev, } #ifdef NOTYET -static int yaffs_CheckChunkErased(struct yaffs_DeviceStruct *dev, - int chunkInNAND) +static int yaffs_check_chunk_erased(struct yaffs_dev_s *dev, + int nand_chunk) { static int init; static __u8 cmpbuf[YAFFS_BYTES_PER_CHUNK]; static __u8 data[YAFFS_BYTES_PER_CHUNK]; /* Might as well always allocate the larger size for */ - /* dev->useNANDECC == true; */ - static __u8 spare[sizeof(struct yaffs_NANDSpare)]; + /* dev->param.use_nand_ecc == true; */ + static __u8 spare[sizeof(struct yaffs_nand_spare)]; - dev->readChunkFromNAND(dev, chunkInNAND, data, (yaffs_Spare *) spare); + dev->param.read_chunk_fn(dev, nand_chunk, data, (yaffs_spare *) spare); if (!init) { memset(cmpbuf, 0xff, YAFFS_BYTES_PER_CHUNK); @@ -331,14 +329,14 @@ static int yaffs_CheckChunkErased(struct yaffs_DeviceStruct *dev, * Functions for robustisizing */ -static void yaffs_HandleReadDataError(yaffs_Device *dev, int chunkInNAND) +static void yaffs_handle_rd_data_error(yaffs_dev_t *dev, int nand_chunk) { - int blockInNAND = chunkInNAND / dev->nChunksPerBlock; + int flash_block = nand_chunk / dev->param.chunks_per_block; /* Mark the block for retirement */ - yaffs_GetBlockInfo(dev, blockInNAND + dev->blockOffset)->needsRetiring = 1; + yaffs_get_block_info(dev, flash_block + dev->block_offset)->needs_retiring = 1; T(YAFFS_TRACE_ERROR | YAFFS_TRACE_BAD_BLOCKS, - (TSTR("**>>Block %d marked for retirement" TENDSTR), blockInNAND)); + (TSTR("**>>Block %d marked for retirement" TENDSTR), flash_block)); /* TODO: * Just do a garbage collection on the affected block @@ -348,44 +346,44 @@ static void yaffs_HandleReadDataError(yaffs_Device *dev, int chunkInNAND) } #ifdef NOTYET -static void yaffs_CheckWrittenBlock(yaffs_Device *dev, int chunkInNAND) +static void yaffs_check_written_block(yaffs_dev_t *dev, int nand_chunk) { } -static void yaffs_HandleWriteChunkOk(yaffs_Device *dev, int chunkInNAND, +static void yaffs_handle_chunk_wr_ok(yaffs_dev_t *dev, int nand_chunk, const __u8 *data, - const yaffs_Spare *spare) + const yaffs_spare *spare) { } -static void yaffs_HandleUpdateChunk(yaffs_Device *dev, int chunkInNAND, - const yaffs_Spare *spare) +static void yaffs_handle_chunk_update(yaffs_dev_t *dev, int nand_chunk, + const yaffs_spare *spare) { } -static void yaffs_HandleWriteChunkError(yaffs_Device *dev, int chunkInNAND) +static void yaffs_handle_chunk_wr_error(yaffs_dev_t *dev, int nand_chunk) { - int blockInNAND = chunkInNAND / dev->nChunksPerBlock; + int flash_block = nand_chunk / dev->param.chunks_per_block; /* Mark the block for retirement */ - yaffs_GetBlockInfo(dev, blockInNAND)->needsRetiring = 1; + yaffs_get_block_info(dev, flash_block)->needs_retiring = 1; /* Delete the chunk */ - yaffs_DeleteChunk(dev, chunkInNAND, 1, __LINE__); + yaffs_chunk_del(dev, nand_chunk, 1, __LINE__); } -static int yaffs_VerifyCompare(const __u8 *d0, const __u8 *d1, - const yaffs_Spare *s0, const yaffs_Spare *s1) +static int yaffs_verify_cmp(const __u8 *d0, const __u8 *d1, + const yaffs_spare *s0, const yaffs_spare *s1) { if (memcmp(d0, d1, YAFFS_BYTES_PER_CHUNK) != 0 || - s0->tagByte0 != s1->tagByte0 || - s0->tagByte1 != s1->tagByte1 || - s0->tagByte2 != s1->tagByte2 || - s0->tagByte3 != s1->tagByte3 || - s0->tagByte4 != s1->tagByte4 || - s0->tagByte5 != s1->tagByte5 || - s0->tagByte6 != s1->tagByte6 || - s0->tagByte7 != s1->tagByte7 || + s0->tb0 != s1->tb0 || + s0->tb1 != s1->tb1 || + s0->tb2 != s1->tb2 || + s0->tb3 != s1->tb3 || + s0->tb4 != s1->tb4 || + s0->tb5 != s1->tb5 || + s0->tb6 != s1->tb6 || + s0->tb7 != s1->tb7 || s0->ecc1[0] != s1->ecc1[0] || s0->ecc1[1] != s1->ecc1[1] || s0->ecc1[2] != s1->ecc1[2] || @@ -398,53 +396,53 @@ static int yaffs_VerifyCompare(const __u8 *d0, const __u8 *d1, } #endif /* NOTYET */ -int yaffs_TagsCompatabilityWriteChunkWithTagsToNAND(yaffs_Device *dev, - int chunkInNAND, +int yaffs_tags_compat_wr(yaffs_dev_t *dev, + int nand_chunk, const __u8 *data, - const yaffs_ExtendedTags *eTags) + const yaffs_ext_tags *eTags) { - yaffs_Spare spare; - yaffs_Tags tags; + yaffs_spare spare; + yaffs_tags_t tags; - yaffs_SpareInitialise(&spare); + yaffs_spare_init(&spare); - if (eTags->chunkDeleted) - spare.pageStatus = 0; + if (eTags->is_deleted) + spare.page_status = 0; else { - tags.objectId = eTags->objectId; - tags.chunkId = eTags->chunkId; + tags.obj_id = eTags->obj_id; + tags.chunk_id = eTags->chunk_id; - tags.byteCountLSB = eTags->byteCount & 0x3ff; + tags.n_bytes_lsb = eTags->n_bytes & 0x3ff; - if (dev->nDataBytesPerChunk >= 1024) - tags.byteCountMSB = (eTags->byteCount >> 10) & 3; + if (dev->data_bytes_per_chunk >= 1024) + tags.n_bytes_msb = (eTags->n_bytes >> 10) & 3; else - tags.byteCountMSB = 3; + tags.n_bytes_msb = 3; - tags.serialNumber = eTags->serialNumber; + tags.serial_number = eTags->serial_number; - if (!dev->useNANDECC && data) - yaffs_CalcECC(data, &spare); + if (!dev->param.use_nand_ecc && data) + yaffs_calc_ecc(data, &spare); - yaffs_LoadTagsIntoSpare(&spare, &tags); + yaffs_load_tags_to_spare(&spare, &tags); } - return yaffs_WriteChunkToNAND(dev, chunkInNAND, data, &spare); + return yaffs_wr_nand(dev, nand_chunk, data, &spare); } -int yaffs_TagsCompatabilityReadChunkWithTagsFromNAND(yaffs_Device *dev, - int chunkInNAND, +int yaffs_tags_compat_rd(yaffs_dev_t *dev, + int nand_chunk, __u8 *data, - yaffs_ExtendedTags *eTags) + yaffs_ext_tags *eTags) { - yaffs_Spare spare; - yaffs_Tags tags; - yaffs_ECCResult eccResult = YAFFS_ECC_RESULT_UNKNOWN; + yaffs_spare spare; + yaffs_tags_t tags; + yaffs_ecc_result ecc_result = YAFFS_ECC_RESULT_UNKNOWN; - static yaffs_Spare spareFF; + static yaffs_spare spareFF; static int init; if (!init) { @@ -452,33 +450,33 @@ int yaffs_TagsCompatabilityReadChunkWithTagsFromNAND(yaffs_Device *dev, init = 1; } - if (yaffs_ReadChunkFromNAND - (dev, chunkInNAND, data, &spare, &eccResult, 1)) { + if (yaffs_rd_chunk_nand + (dev, nand_chunk, data, &spare, &ecc_result, 1)) { /* eTags may be NULL */ if (eTags) { int deleted = - (yaffs_CountBits(spare.pageStatus) < 7) ? 1 : 0; + (yaffs_count_bits(spare.page_status) < 7) ? 1 : 0; - eTags->chunkDeleted = deleted; - eTags->eccResult = eccResult; - eTags->blockBad = 0; /* We're reading it */ + eTags->is_deleted = deleted; + eTags->ecc_result = ecc_result; + eTags->block_bad = 0; /* We're reading it */ /* therefore it is not a bad block */ - eTags->chunkUsed = + eTags->chunk_used = (memcmp(&spareFF, &spare, sizeof(spareFF)) != 0) ? 1 : 0; - if (eTags->chunkUsed) { - yaffs_GetTagsFromSpare(dev, &spare, &tags); + if (eTags->chunk_used) { + yaffs_get_tags_from_spare(dev, &spare, &tags); - eTags->objectId = tags.objectId; - eTags->chunkId = tags.chunkId; - eTags->byteCount = tags.byteCountLSB; + eTags->obj_id = tags.obj_id; + eTags->chunk_id = tags.chunk_id; + eTags->n_bytes = tags.n_bytes_lsb; - if (dev->nDataBytesPerChunk >= 1024) - eTags->byteCount |= (((unsigned) tags.byteCountMSB) << 10); + if (dev->data_bytes_per_chunk >= 1024) + eTags->n_bytes |= (((unsigned) tags.n_bytes_msb) << 10); - eTags->serialNumber = tags.serialNumber; + eTags->serial_number = tags.serial_number; } } @@ -488,49 +486,49 @@ int yaffs_TagsCompatabilityReadChunkWithTagsFromNAND(yaffs_Device *dev, } } -int yaffs_TagsCompatabilityMarkNANDBlockBad(struct yaffs_DeviceStruct *dev, - int blockInNAND) +int yaffs_tags_compat_mark_bad(struct yaffs_dev_s *dev, + int flash_block) { - yaffs_Spare spare; + yaffs_spare spare; - memset(&spare, 0xff, sizeof(yaffs_Spare)); + memset(&spare, 0xff, sizeof(yaffs_spare)); - spare.blockStatus = 'Y'; + spare.block_status = 'Y'; - yaffs_WriteChunkToNAND(dev, blockInNAND * dev->nChunksPerBlock, NULL, + yaffs_wr_nand(dev, flash_block * dev->param.chunks_per_block, NULL, &spare); - yaffs_WriteChunkToNAND(dev, blockInNAND * dev->nChunksPerBlock + 1, + yaffs_wr_nand(dev, flash_block * dev->param.chunks_per_block + 1, NULL, &spare); return YAFFS_OK; } -int yaffs_TagsCompatabilityQueryNANDBlock(struct yaffs_DeviceStruct *dev, - int blockNo, - yaffs_BlockState *state, - __u32 *sequenceNumber) +int yaffs_tags_compat_query_block(struct yaffs_dev_s *dev, + int block_no, + yaffs_block_state_t *state, + __u32 *seq_number) { - yaffs_Spare spare0, spare1; - static yaffs_Spare spareFF; + yaffs_spare spare0, spare1; + static yaffs_spare spareFF; static int init; - yaffs_ECCResult dummy; + yaffs_ecc_result dummy; if (!init) { memset(&spareFF, 0xFF, sizeof(spareFF)); init = 1; } - *sequenceNumber = 0; + *seq_number = 0; - yaffs_ReadChunkFromNAND(dev, blockNo * dev->nChunksPerBlock, NULL, + yaffs_rd_chunk_nand(dev, block_no * dev->param.chunks_per_block, NULL, &spare0, &dummy, 1); - yaffs_ReadChunkFromNAND(dev, blockNo * dev->nChunksPerBlock + 1, NULL, + yaffs_rd_chunk_nand(dev, block_no * dev->param.chunks_per_block + 1, NULL, &spare1, &dummy, 1); - if (yaffs_CountBits(spare0.blockStatus & spare1.blockStatus) < 7) + if (yaffs_count_bits(spare0.block_status & spare1.block_status) < 7) *state = YAFFS_BLOCK_STATE_DEAD; else if (memcmp(&spareFF, &spare0, sizeof(spareFF)) == 0) *state = YAFFS_BLOCK_STATE_EMPTY; diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_tagscompat.h b/target/linux/generic/files/fs/yaffs2/yaffs_tagscompat.h index 6f95119e0a..889bf5f4b7 100644 --- a/target/linux/generic/files/fs/yaffs2/yaffs_tagscompat.h +++ b/target/linux/generic/files/fs/yaffs2/yaffs_tagscompat.h @@ -1,7 +1,7 @@ /* * YAFFS: Yet another Flash File System . A NAND-flash specific file system. * - * Copyright (C) 2002-2007 Aleph One Ltd. + * Copyright (C) 2002-2010 Aleph One Ltd. * for Toby Churchill Ltd and Brightstar Engineering * * Created by Charles Manning <charles@aleph1.co.uk> @@ -17,23 +17,23 @@ #define __YAFFS_TAGSCOMPAT_H__ #include "yaffs_guts.h" -int yaffs_TagsCompatabilityWriteChunkWithTagsToNAND(yaffs_Device *dev, - int chunkInNAND, +int yaffs_tags_compat_wr(yaffs_dev_t *dev, + int nand_chunk, const __u8 *data, - const yaffs_ExtendedTags *tags); -int yaffs_TagsCompatabilityReadChunkWithTagsFromNAND(yaffs_Device *dev, - int chunkInNAND, + const yaffs_ext_tags *tags); +int yaffs_tags_compat_rd(yaffs_dev_t *dev, + int nand_chunk, __u8 *data, - yaffs_ExtendedTags *tags); -int yaffs_TagsCompatabilityMarkNANDBlockBad(struct yaffs_DeviceStruct *dev, - int blockNo); -int yaffs_TagsCompatabilityQueryNANDBlock(struct yaffs_DeviceStruct *dev, - int blockNo, - yaffs_BlockState *state, - __u32 *sequenceNumber); + yaffs_ext_tags *tags); +int yaffs_tags_compat_mark_bad(struct yaffs_dev_s *dev, + int block_no); +int yaffs_tags_compat_query_block(struct yaffs_dev_s *dev, + int block_no, + yaffs_block_state_t *state, + __u32 *seq_number); -void yaffs_CalcTagsECC(yaffs_Tags *tags); -int yaffs_CheckECCOnTags(yaffs_Tags *tags); -int yaffs_CountBits(__u8 byte); +void yaffs_calc_tags_ecc(yaffs_tags_t *tags); +int yaffs_check_tags_ecc(yaffs_tags_t *tags); +int yaffs_count_bits(__u8 byte); #endif diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_tagsvalidity.c b/target/linux/generic/files/fs/yaffs2/yaffs_tagsvalidity.c index 5233bcba8b..787cdba370 100644 --- a/target/linux/generic/files/fs/yaffs2/yaffs_tagsvalidity.c +++ b/target/linux/generic/files/fs/yaffs2/yaffs_tagsvalidity.c @@ -1,7 +1,7 @@ /* * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. * - * Copyright (C) 2002-2007 Aleph One Ltd. + * Copyright (C) 2002-2010 Aleph One Ltd. * for Toby Churchill Ltd and Brightstar Engineering * * Created by Charles Manning <charles@aleph1.co.uk> @@ -13,16 +13,16 @@ #include "yaffs_tagsvalidity.h" -void yaffs_InitialiseTags(yaffs_ExtendedTags *tags) +void yaffs_init_tags(yaffs_ext_tags *tags) { - memset(tags, 0, sizeof(yaffs_ExtendedTags)); - tags->validMarker0 = 0xAAAAAAAA; - tags->validMarker1 = 0x55555555; + memset(tags, 0, sizeof(yaffs_ext_tags)); + tags->validity1 = 0xAAAAAAAA; + tags->validty1 = 0x55555555; } -int yaffs_ValidateTags(yaffs_ExtendedTags *tags) +int yaffs_validate_tags(yaffs_ext_tags *tags) { - return (tags->validMarker0 == 0xAAAAAAAA && - tags->validMarker1 == 0x55555555); + return (tags->validity1 == 0xAAAAAAAA && + tags->validty1 == 0x55555555); } diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_tagsvalidity.h b/target/linux/generic/files/fs/yaffs2/yaffs_tagsvalidity.h index cb11884b2d..085056c56b 100644 --- a/target/linux/generic/files/fs/yaffs2/yaffs_tagsvalidity.h +++ b/target/linux/generic/files/fs/yaffs2/yaffs_tagsvalidity.h @@ -1,7 +1,7 @@ /* * YAFFS: Yet another Flash File System . A NAND-flash specific file system. * - * Copyright (C) 2002-2007 Aleph One Ltd. + * Copyright (C) 2002-2010 Aleph One Ltd. * for Toby Churchill Ltd and Brightstar Engineering * * Created by Charles Manning <charles@aleph1.co.uk> @@ -19,6 +19,6 @@ #include "yaffs_guts.h" -void yaffs_InitialiseTags(yaffs_ExtendedTags *tags); -int yaffs_ValidateTags(yaffs_ExtendedTags *tags); +void yaffs_init_tags(yaffs_ext_tags *tags); +int yaffs_validate_tags(yaffs_ext_tags *tags); #endif diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_trace.h b/target/linux/generic/files/fs/yaffs2/yaffs_trace.h new file mode 100644 index 0000000000..9fe7214a21 --- /dev/null +++ b/target/linux/generic/files/fs/yaffs2/yaffs_trace.h @@ -0,0 +1,60 @@ +/* + * YAFFS: Yet another Flash File System . A NAND-flash specific file system. + * + * Copyright (C) 2002-2010 Aleph One Ltd. + * for Toby Churchill Ltd and Brightstar Engineering + * + * Created by Charles Manning <charles@aleph1.co.uk> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License version 2.1 as + * published by the Free Software Foundation. + * + * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL. + */ + + +#ifndef __YTRACE_H__ +#define __YTRACE_H__ + +extern unsigned int yaffs_trace_mask; +extern unsigned int yaffs_wr_attempts; + +/* + * Tracing flags. + * The flags masked in YAFFS_TRACE_ALWAYS are always traced. + */ + +#define YAFFS_TRACE_OS 0x00000002 +#define YAFFS_TRACE_ALLOCATE 0x00000004 +#define YAFFS_TRACE_SCAN 0x00000008 +#define YAFFS_TRACE_BAD_BLOCKS 0x00000010 +#define YAFFS_TRACE_ERASE 0x00000020 +#define YAFFS_TRACE_GC 0x00000040 +#define YAFFS_TRACE_WRITE 0x00000080 +#define YAFFS_TRACE_TRACING 0x00000100 +#define YAFFS_TRACE_DELETION 0x00000200 +#define YAFFS_TRACE_BUFFERS 0x00000400 +#define YAFFS_TRACE_NANDACCESS 0x00000800 +#define YAFFS_TRACE_GC_DETAIL 0x00001000 +#define YAFFS_TRACE_SCAN_DEBUG 0x00002000 +#define YAFFS_TRACE_MTD 0x00004000 +#define YAFFS_TRACE_CHECKPOINT 0x00008000 + +#define YAFFS_TRACE_VERIFY 0x00010000 +#define YAFFS_TRACE_VERIFY_NAND 0x00020000 +#define YAFFS_TRACE_VERIFY_FULL 0x00040000 +#define YAFFS_TRACE_VERIFY_ALL 0x000F0000 + +#define YAFFS_TRACE_SYNC 0x00100000 +#define YAFFS_TRACE_BACKGROUND 0x00200000 +#define YAFFS_TRACE_LOCK 0x00400000 + +#define YAFFS_TRACE_ERROR 0x40000000 +#define YAFFS_TRACE_BUG 0x80000000 +#define YAFFS_TRACE_ALWAYS 0xF0000000 + + +#define T(mask, p) do { if ((mask) & (yaffs_trace_mask | YAFFS_TRACE_ALWAYS)) TOUT(p); } while (0) + +#endif diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_verify.c b/target/linux/generic/files/fs/yaffs2/yaffs_verify.c new file mode 100644 index 0000000000..39d16e6363 --- /dev/null +++ b/target/linux/generic/files/fs/yaffs2/yaffs_verify.c @@ -0,0 +1,626 @@ +/* + * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. + * + * Copyright (C) 2002-2010 Aleph One Ltd. + * for Toby Churchill Ltd and Brightstar Engineering + * + * Created by Charles Manning <charles@aleph1.co.uk> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + + +#include "yaffs_verify.h" +#include "yaffs_trace.h" +#include "yaffs_bitmap.h" +#include "yaffs_getblockinfo.h" +#include "yaffs_nand.h" + +int yaffs_skip_verification(yaffs_dev_t *dev) +{ + dev=dev; + return !(yaffs_trace_mask & (YAFFS_TRACE_VERIFY | YAFFS_TRACE_VERIFY_FULL)); +} + +static int yaffs_skip_full_verification(yaffs_dev_t *dev) +{ + dev=dev; + return !(yaffs_trace_mask & (YAFFS_TRACE_VERIFY_FULL)); +} + +static int yaffs_skip_nand_verification(yaffs_dev_t *dev) +{ + dev=dev; + return !(yaffs_trace_mask & (YAFFS_TRACE_VERIFY_NAND)); +} + + +static const char *block_stateName[] = { +"Unknown", +"Needs scanning", +"Scanning", +"Empty", +"Allocating", +"Full", +"Dirty", +"Checkpoint", +"Collecting", +"Dead" +}; + + +void yaffs_verify_blk(yaffs_dev_t *dev, yaffs_block_info_t *bi, int n) +{ + int actuallyUsed; + int inUse; + + if (yaffs_skip_verification(dev)) + return; + + /* Report illegal runtime states */ + if (bi->block_state >= YAFFS_NUMBER_OF_BLOCK_STATES) + T(YAFFS_TRACE_VERIFY, (TSTR("Block %d has undefined state %d"TENDSTR), n, bi->block_state)); + + switch (bi->block_state) { + case YAFFS_BLOCK_STATE_UNKNOWN: + case YAFFS_BLOCK_STATE_SCANNING: + case YAFFS_BLOCK_STATE_NEEDS_SCANNING: + T(YAFFS_TRACE_VERIFY, (TSTR("Block %d has bad run-state %s"TENDSTR), + n, block_stateName[bi->block_state])); + } + + /* Check pages in use and soft deletions are legal */ + + actuallyUsed = bi->pages_in_use - bi->soft_del_pages; + + if (bi->pages_in_use < 0 || bi->pages_in_use > dev->param.chunks_per_block || + bi->soft_del_pages < 0 || bi->soft_del_pages > dev->param.chunks_per_block || + actuallyUsed < 0 || actuallyUsed > dev->param.chunks_per_block) + T(YAFFS_TRACE_VERIFY, (TSTR("Block %d has illegal values pages_in_used %d soft_del_pages %d"TENDSTR), + n, bi->pages_in_use, bi->soft_del_pages)); + + + /* Check chunk bitmap legal */ + inUse = yaffs_count_chunk_bits(dev, n); + if (inUse != bi->pages_in_use) + T(YAFFS_TRACE_VERIFY, (TSTR("Block %d has inconsistent values pages_in_use %d counted chunk bits %d"TENDSTR), + n, bi->pages_in_use, inUse)); + +} + + + +void yaffs_verify_collected_blk(yaffs_dev_t *dev, yaffs_block_info_t *bi, int n) +{ + yaffs_verify_blk(dev, bi, n); + + /* After collection the block should be in the erased state */ + + if (bi->block_state != YAFFS_BLOCK_STATE_COLLECTING && + bi->block_state != YAFFS_BLOCK_STATE_EMPTY) { + T(YAFFS_TRACE_ERROR, (TSTR("Block %d is in state %d after gc, should be erased"TENDSTR), + n, bi->block_state)); + } +} + +void yaffs_verify_blocks(yaffs_dev_t *dev) +{ + int i; + int nBlocksPerState[YAFFS_NUMBER_OF_BLOCK_STATES]; + int nIllegalBlockStates = 0; + + if (yaffs_skip_verification(dev)) + return; + + memset(nBlocksPerState, 0, sizeof(nBlocksPerState)); + + for (i = dev->internal_start_block; i <= dev->internal_end_block; i++) { + yaffs_block_info_t *bi = yaffs_get_block_info(dev, i); + yaffs_verify_blk(dev, bi, i); + + if (bi->block_state < YAFFS_NUMBER_OF_BLOCK_STATES) + nBlocksPerState[bi->block_state]++; + else + nIllegalBlockStates++; + } + + T(YAFFS_TRACE_VERIFY, (TSTR(""TENDSTR))); + T(YAFFS_TRACE_VERIFY, (TSTR("Block summary"TENDSTR))); + + T(YAFFS_TRACE_VERIFY, (TSTR("%d blocks have illegal states"TENDSTR), nIllegalBlockStates)); + if (nBlocksPerState[YAFFS_BLOCK_STATE_ALLOCATING] > 1) + T(YAFFS_TRACE_VERIFY, (TSTR("Too many allocating blocks"TENDSTR))); + + for (i = 0; i < YAFFS_NUMBER_OF_BLOCK_STATES; i++) + T(YAFFS_TRACE_VERIFY, + (TSTR("%s %d blocks"TENDSTR), + block_stateName[i], nBlocksPerState[i])); + + if (dev->blocks_in_checkpt != nBlocksPerState[YAFFS_BLOCK_STATE_CHECKPOINT]) + T(YAFFS_TRACE_VERIFY, + (TSTR("Checkpoint block count wrong dev %d count %d"TENDSTR), + dev->blocks_in_checkpt, nBlocksPerState[YAFFS_BLOCK_STATE_CHECKPOINT])); + + if (dev->n_erased_blocks != nBlocksPerState[YAFFS_BLOCK_STATE_EMPTY]) + T(YAFFS_TRACE_VERIFY, + (TSTR("Erased block count wrong dev %d count %d"TENDSTR), + dev->n_erased_blocks, nBlocksPerState[YAFFS_BLOCK_STATE_EMPTY])); + + if (nBlocksPerState[YAFFS_BLOCK_STATE_COLLECTING] > 1) + T(YAFFS_TRACE_VERIFY, + (TSTR("Too many collecting blocks %d (max is 1)"TENDSTR), + nBlocksPerState[YAFFS_BLOCK_STATE_COLLECTING])); + + T(YAFFS_TRACE_VERIFY, (TSTR(""TENDSTR))); + +} + +/* + * Verify the object header. oh must be valid, but obj and tags may be NULL in which + * case those tests will not be performed. + */ +void yaffs_verify_oh(yaffs_obj_t *obj, yaffs_obj_header *oh, yaffs_ext_tags *tags, int parentCheck) +{ + if (obj && yaffs_skip_verification(obj->my_dev)) + return; + + if (!(tags && obj && oh)) { + T(YAFFS_TRACE_VERIFY, + (TSTR("Verifying object header tags %p obj %p oh %p"TENDSTR), + tags, obj, oh)); + return; + } + + if (oh->type <= YAFFS_OBJECT_TYPE_UNKNOWN || + oh->type > YAFFS_OBJECT_TYPE_MAX) + T(YAFFS_TRACE_VERIFY, + (TSTR("Obj %d header type is illegal value 0x%x"TENDSTR), + tags->obj_id, oh->type)); + + if (tags->obj_id != obj->obj_id) + T(YAFFS_TRACE_VERIFY, + (TSTR("Obj %d header mismatch obj_id %d"TENDSTR), + tags->obj_id, obj->obj_id)); + + + /* + * Check that the object's parent ids match if parentCheck requested. + * + * Tests do not apply to the root object. + */ + + if (parentCheck && tags->obj_id > 1 && !obj->parent) + T(YAFFS_TRACE_VERIFY, + (TSTR("Obj %d header mismatch parent_id %d obj->parent is NULL"TENDSTR), + tags->obj_id, oh->parent_obj_id)); + + if (parentCheck && obj->parent && + oh->parent_obj_id != obj->parent->obj_id && + (oh->parent_obj_id != YAFFS_OBJECTID_UNLINKED || + obj->parent->obj_id != YAFFS_OBJECTID_DELETED)) + T(YAFFS_TRACE_VERIFY, + (TSTR("Obj %d header mismatch parent_id %d parent_obj_id %d"TENDSTR), + tags->obj_id, oh->parent_obj_id, obj->parent->obj_id)); + + if (tags->obj_id > 1 && oh->name[0] == 0) /* Null name */ + T(YAFFS_TRACE_VERIFY, + (TSTR("Obj %d header name is NULL"TENDSTR), + obj->obj_id)); + + if (tags->obj_id > 1 && ((__u8)(oh->name[0])) == 0xff) /* Trashed name */ + T(YAFFS_TRACE_VERIFY, + (TSTR("Obj %d header name is 0xFF"TENDSTR), + obj->obj_id)); +} + + +#if 0 +/* Not being used, but don't want to throw away yet */ +int yaffs_verify_tnode_worker(yaffs_obj_t *obj, yaffs_tnode_t *tn, + __u32 level, int chunk_offset) +{ + int i; + yaffs_dev_t *dev = obj->my_dev; + int ok = 1; + + if (tn) { + if (level > 0) { + + for (i = 0; i < YAFFS_NTNODES_INTERNAL && ok; i++) { + if (tn->internal[i]) { + ok = yaffs_verify_tnode_worker(obj, + tn->internal[i], + level - 1, + (chunk_offset<<YAFFS_TNODES_INTERNAL_BITS) + i); + } + } + } else if (level == 0) { + yaffs_ext_tags tags; + __u32 obj_id = obj->obj_id; + + chunk_offset <<= YAFFS_TNODES_LEVEL0_BITS; + + for (i = 0; i < YAFFS_NTNODES_LEVEL0; i++) { + __u32 theChunk = yaffs_get_group_base(dev, tn, i); + + if (theChunk > 0) { + /* T(~0,(TSTR("verifying (%d:%d) %d"TENDSTR),tags.obj_id,tags.chunk_id,theChunk)); */ + yaffs_rd_chunk_tags_nand(dev, theChunk, NULL, &tags); + if (tags.obj_id != obj_id || tags.chunk_id != chunk_offset) { + T(~0, (TSTR("Object %d chunk_id %d NAND mismatch chunk %d tags (%d:%d)"TENDSTR), + obj_id, chunk_offset, theChunk, + tags.obj_id, tags.chunk_id)); + } + } + chunk_offset++; + } + } + } + + return ok; + +} + +#endif + +void yaffs_verify_file(yaffs_obj_t *obj) +{ + int requiredTallness; + int actualTallness; + __u32 lastChunk; + __u32 x; + __u32 i; + yaffs_dev_t *dev; + yaffs_ext_tags tags; + yaffs_tnode_t *tn; + __u32 obj_id; + + if (!obj) + return; + + if (yaffs_skip_verification(obj->my_dev)) + return; + + dev = obj->my_dev; + obj_id = obj->obj_id; + + /* Check file size is consistent with tnode depth */ + lastChunk = obj->variant.file_variant.file_size / dev->data_bytes_per_chunk + 1; + x = lastChunk >> YAFFS_TNODES_LEVEL0_BITS; + requiredTallness = 0; + while (x > 0) { + x >>= YAFFS_TNODES_INTERNAL_BITS; + requiredTallness++; + } + + actualTallness = obj->variant.file_variant.top_level; + + /* Check that the chunks in the tnode tree are all correct. + * We do this by scanning through the tnode tree and + * checking the tags for every chunk match. + */ + + if (yaffs_skip_nand_verification(dev)) + return; + + for (i = 1; i <= lastChunk; i++) { + tn = yaffs_find_tnode_0(dev, &obj->variant.file_variant, i); + + if (tn) { + __u32 theChunk = yaffs_get_group_base(dev, tn, i); + if (theChunk > 0) { + /* T(~0,(TSTR("verifying (%d:%d) %d"TENDSTR),obj_id,i,theChunk)); */ + yaffs_rd_chunk_tags_nand(dev, theChunk, NULL, &tags); + if (tags.obj_id != obj_id || tags.chunk_id != i) { + T(~0, (TSTR("Object %d chunk_id %d NAND mismatch chunk %d tags (%d:%d)"TENDSTR), + obj_id, i, theChunk, + tags.obj_id, tags.chunk_id)); + } + } + } + } +} + + +void yaffs_verify_link(yaffs_obj_t *obj) +{ + if (obj && yaffs_skip_verification(obj->my_dev)) + return; + + /* Verify sane equivalent object */ +} + +void yaffs_verify_symlink(yaffs_obj_t *obj) +{ + if (obj && yaffs_skip_verification(obj->my_dev)) + return; + + /* Verify symlink string */ +} + +void yaffs_verify_special(yaffs_obj_t *obj) +{ + if (obj && yaffs_skip_verification(obj->my_dev)) + return; +} + +void yaffs_verify_obj(yaffs_obj_t *obj) +{ + yaffs_dev_t *dev; + + __u32 chunkMin; + __u32 chunkMax; + + __u32 chunk_idOk; + __u32 chunkInRange; + __u32 chunkShouldNotBeDeleted; + __u32 chunkValid; + + if (!obj) + return; + + if (obj->being_created) + return; + + dev = obj->my_dev; + + if (yaffs_skip_verification(dev)) + return; + + /* Check sane object header chunk */ + + chunkMin = dev->internal_start_block * dev->param.chunks_per_block; + chunkMax = (dev->internal_end_block+1) * dev->param.chunks_per_block - 1; + + chunkInRange = (((unsigned)(obj->hdr_chunk)) >= chunkMin && ((unsigned)(obj->hdr_chunk)) <= chunkMax); + chunk_idOk = chunkInRange || (obj->hdr_chunk == 0); + chunkValid = chunkInRange && + yaffs_check_chunk_bit(dev, + obj->hdr_chunk / dev->param.chunks_per_block, + obj->hdr_chunk % dev->param.chunks_per_block); + chunkShouldNotBeDeleted = chunkInRange && !chunkValid; + + if (!obj->fake && + (!chunk_idOk || chunkShouldNotBeDeleted)) { + T(YAFFS_TRACE_VERIFY, + (TSTR("Obj %d has chunk_id %d %s %s"TENDSTR), + obj->obj_id, obj->hdr_chunk, + chunk_idOk ? "" : ",out of range", + chunkShouldNotBeDeleted ? ",marked as deleted" : "")); + } + + if (chunkValid && !yaffs_skip_nand_verification(dev)) { + yaffs_ext_tags tags; + yaffs_obj_header *oh; + __u8 *buffer = yaffs_get_temp_buffer(dev, __LINE__); + + oh = (yaffs_obj_header *)buffer; + + yaffs_rd_chunk_tags_nand(dev, obj->hdr_chunk, buffer, + &tags); + + yaffs_verify_oh(obj, oh, &tags, 1); + + yaffs_release_temp_buffer(dev, buffer, __LINE__); + } + + /* Verify it has a parent */ + if (obj && !obj->fake && + (!obj->parent || obj->parent->my_dev != dev)) { + T(YAFFS_TRACE_VERIFY, + (TSTR("Obj %d has parent pointer %p which does not look like an object"TENDSTR), + obj->obj_id, obj->parent)); + } + + /* Verify parent is a directory */ + if (obj->parent && obj->parent->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) { + T(YAFFS_TRACE_VERIFY, + (TSTR("Obj %d's parent is not a directory (type %d)"TENDSTR), + obj->obj_id, obj->parent->variant_type)); + } + + switch (obj->variant_type) { + case YAFFS_OBJECT_TYPE_FILE: + yaffs_verify_file(obj); + break; + case YAFFS_OBJECT_TYPE_SYMLINK: + yaffs_verify_symlink(obj); + break; + case YAFFS_OBJECT_TYPE_DIRECTORY: + yaffs_verify_dir(obj); + break; + case YAFFS_OBJECT_TYPE_HARDLINK: + yaffs_verify_link(obj); + break; + case YAFFS_OBJECT_TYPE_SPECIAL: + yaffs_verify_special(obj); + break; + case YAFFS_OBJECT_TYPE_UNKNOWN: + default: + T(YAFFS_TRACE_VERIFY, + (TSTR("Obj %d has illegaltype %d"TENDSTR), + obj->obj_id, obj->variant_type)); + break; + } +} + +void yaffs_verify_objects(yaffs_dev_t *dev) +{ + yaffs_obj_t *obj; + int i; + struct ylist_head *lh; + + if (yaffs_skip_verification(dev)) + return; + + /* Iterate through the objects in each hash entry */ + + for (i = 0; i < YAFFS_NOBJECT_BUCKETS; i++) { + ylist_for_each(lh, &dev->obj_bucket[i].list) { + if (lh) { + obj = ylist_entry(lh, yaffs_obj_t, hash_link); + yaffs_verify_obj(obj); + } + } + } +} + + +void yaffs_verify_obj_in_dir(yaffs_obj_t *obj) +{ + struct ylist_head *lh; + yaffs_obj_t *listObj; + + int count = 0; + + if (!obj) { + T(YAFFS_TRACE_ALWAYS, (TSTR("No object to verify" TENDSTR))); + YBUG(); + return; + } + + if (yaffs_skip_verification(obj->my_dev)) + return; + + if (!obj->parent) { + T(YAFFS_TRACE_ALWAYS, (TSTR("Object does not have parent" TENDSTR))); + YBUG(); + return; + } + + if (obj->parent->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) { + T(YAFFS_TRACE_ALWAYS, (TSTR("Parent is not directory" TENDSTR))); + YBUG(); + } + + /* Iterate through the objects in each hash entry */ + + ylist_for_each(lh, &obj->parent->variant.dir_variant.children) { + if (lh) { + listObj = ylist_entry(lh, yaffs_obj_t, siblings); + yaffs_verify_obj(listObj); + if (obj == listObj) + count++; + } + } + + if (count != 1) { + T(YAFFS_TRACE_ALWAYS, (TSTR("Object in directory %d times" TENDSTR), count)); + YBUG(); + } +} + +void yaffs_verify_dir(yaffs_obj_t *directory) +{ + struct ylist_head *lh; + yaffs_obj_t *listObj; + + if (!directory) { + YBUG(); + return; + } + + if (yaffs_skip_full_verification(directory->my_dev)) + return; + + if (directory->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) { + T(YAFFS_TRACE_ALWAYS, (TSTR("Directory has wrong type: %d" TENDSTR), directory->variant_type)); + YBUG(); + } + + /* Iterate through the objects in each hash entry */ + + ylist_for_each(lh, &directory->variant.dir_variant.children) { + if (lh) { + listObj = ylist_entry(lh, yaffs_obj_t, siblings); + if (listObj->parent != directory) { + T(YAFFS_TRACE_ALWAYS, (TSTR("Object in directory list has wrong parent %p" TENDSTR), listObj->parent)); + YBUG(); + } + yaffs_verify_obj_in_dir(listObj); + } + } +} + +static int yaffs_free_verification_failures; + +void yaffs_verify_free_chunks(yaffs_dev_t *dev) +{ + int counted; + int difference; + + if (yaffs_skip_verification(dev)) + return; + + counted = yaffs_count_free_chunks(dev); + + difference = dev->n_free_chunks - counted; + + if (difference) { + T(YAFFS_TRACE_ALWAYS, + (TSTR("Freechunks verification failure %d %d %d" TENDSTR), + dev->n_free_chunks, counted, difference)); + yaffs_free_verification_failures++; + } +} + +int yaffs_verify_file_sane(yaffs_obj_t *in) +{ +#if 0 + int chunk; + int n_chunks; + int fSize; + int failed = 0; + int obj_id; + yaffs_tnode_t *tn; + yaffs_tags_t localTags; + yaffs_tags_t *tags = &localTags; + int theChunk; + int is_deleted; + + if (in->variant_type != YAFFS_OBJECT_TYPE_FILE) + return YAFFS_FAIL; + + obj_id = in->obj_id; + fSize = in->variant.file_variant.file_size; + n_chunks = + (fSize + in->my_dev->data_bytes_per_chunk - 1) / in->my_dev->data_bytes_per_chunk; + + for (chunk = 1; chunk <= n_chunks; chunk++) { + tn = yaffs_find_tnode_0(in->my_dev, &in->variant.file_variant, + chunk); + + if (tn) { + + theChunk = yaffs_get_group_base(dev, tn, chunk); + + if (yaffs_check_chunk_bits + (dev, theChunk / dev->param.chunks_per_block, + theChunk % dev->param.chunks_per_block)) { + + yaffs_rd_chunk_tags_nand(in->my_dev, theChunk, + tags, + &is_deleted); + if (yaffs_tags_match + (tags, in->obj_id, chunk, is_deleted)) { + /* found it; */ + + } + } else { + + failed = 1; + } + + } else { + /* T(("No level 0 found for %d\n", chunk)); */ + } + } + + return failed ? YAFFS_FAIL : YAFFS_OK; +#else + in=in; + return YAFFS_OK; +#endif +} diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_verify.h b/target/linux/generic/files/fs/yaffs2/yaffs_verify.h new file mode 100644 index 0000000000..5ec808ae3d --- /dev/null +++ b/target/linux/generic/files/fs/yaffs2/yaffs_verify.h @@ -0,0 +1,39 @@ +/* + * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. + * + * Copyright (C) 2002-2010 Aleph One Ltd. + * for Toby Churchill Ltd and Brightstar Engineering + * + * Created by Charles Manning <charles@aleph1.co.uk> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef __YAFFS_VERIFY_H__ +#define __YAFFS_VERIFY_H__ + +#include "yaffs_guts.h" + +void yaffs_verify_blk(yaffs_dev_t *dev, yaffs_block_info_t *bi, int n); +void yaffs_verify_collected_blk(yaffs_dev_t *dev, yaffs_block_info_t *bi, int n); +void yaffs_verify_blocks(yaffs_dev_t *dev); + +void yaffs_verify_oh(yaffs_obj_t *obj, yaffs_obj_header *oh, yaffs_ext_tags *tags, int parentCheck); +void yaffs_verify_file(yaffs_obj_t *obj); +void yaffs_verify_link(yaffs_obj_t *obj); +void yaffs_verify_symlink(yaffs_obj_t *obj); +void yaffs_verify_special(yaffs_obj_t *obj); +void yaffs_verify_obj(yaffs_obj_t *obj); +void yaffs_verify_objects(yaffs_dev_t *dev); +void yaffs_verify_obj_in_dir(yaffs_obj_t *obj); +void yaffs_verify_dir(yaffs_obj_t *directory); +void yaffs_verify_free_chunks(yaffs_dev_t *dev); + +int yaffs_verify_file_sane(yaffs_obj_t *obj); + +int yaffs_skip_verification(yaffs_dev_t *dev); + +#endif + diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_vfs_glue.c b/target/linux/generic/files/fs/yaffs2/yaffs_vfs_glue.c new file mode 100644 index 0000000000..0f1ecee259 --- /dev/null +++ b/target/linux/generic/files/fs/yaffs2/yaffs_vfs_glue.c @@ -0,0 +1,3576 @@ +/* + * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. + * + * Copyright (C) 2002-2010 Aleph One Ltd. + * for Toby Churchill Ltd and Brightstar Engineering + * + * Created by Charles Manning <charles@aleph1.co.uk> + * Acknowledgements: + * Luc van OostenRyck for numerous patches. + * Nick Bane for numerous patches. + * Nick Bane for 2.5/2.6 integration. + * Andras Toth for mknod rdev issue. + * Michael Fischer for finding the problem with inode inconsistency. + * Some code bodily lifted from JFFS + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +/* + * + * This is the file system front-end to YAFFS that hooks it up to + * the VFS. + * + * Special notes: + * >> 2.4: sb->u.generic_sbp points to the yaffs_dev_t associated with + * this superblock + * >> 2.6: sb->s_fs_info points to the yaffs_dev_t associated with this + * superblock + * >> inode->u.generic_ip points to the associated yaffs_obj_t. + */ + +/* + * There are two variants of the VFS glue code. This variant should compile + * for any version of Linux. + */ +#include <linux/version.h> + +#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 10)) +#define YAFFS_COMPILE_BACKGROUND +#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6, 23)) +#define YAFFS_COMPILE_FREEZER +#endif +#endif + +#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,28)) +#define YAFFS_COMPILE_EXPORTFS +#endif + +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,35)) +#define YAFFS_USE_SETATTR_COPY +#define YAFFS_USE_TRUNCATE_SETSIZE +#endif +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,35)) +#define YAFFS_HAS_EVICT_INODE +#endif + +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,13)) +#define YAFFS_NEW_FOLLOW_LINK 1 +#else +#define YAFFS_NEW_FOLLOW_LINK 0 +#endif + +#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 19)) +#include <linux/config.h> +#endif + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/slab.h> +#include <linux/init.h> +#include <linux/fs.h> +#include <linux/proc_fs.h> +#include <linux/smp_lock.h> +#include <linux/pagemap.h> +#include <linux/mtd/mtd.h> +#include <linux/interrupt.h> +#include <linux/string.h> +#include <linux/ctype.h> + +#if (YAFFS_NEW_FOLLOW_LINK == 1) +#include <linux/namei.h> +#endif + +#ifdef YAFFS_COMPILE_EXPORTFS +#include <linux/exportfs.h> +#endif + +#ifdef YAFFS_COMPILE_BACKGROUND +#include <linux/kthread.h> +#include <linux/delay.h> +#endif +#ifdef YAFFS_COMPILE_FREEZER +#include <linux/freezer.h> +#endif + +#include <asm/div64.h> + +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) + +#include <linux/statfs.h> + +#define UnlockPage(p) unlock_page(p) +#define Page_Uptodate(page) test_bit(PG_uptodate, &(page)->flags) + +/* FIXME: use sb->s_id instead ? */ +#define yaffs_devname(sb, buf) bdevname(sb->s_bdev, buf) + +#else + +#include <linux/locks.h> +#define BDEVNAME_SIZE 0 +#define yaffs_devname(sb, buf) kdevname(sb->s_dev) + +#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 5, 0)) +/* added NCB 26/5/2006 for 2.4.25-vrs2-tcl1 kernel */ +#define __user +#endif + +#endif + +#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 26)) +#define YPROC_ROOT (&proc_root) +#else +#define YPROC_ROOT NULL +#endif + +#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,26)) +#define Y_INIT_TIMER(a) init_timer(a) +#else +#define Y_INIT_TIMER(a) init_timer_on_stack(a) +#endif + +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) +#define WRITE_SIZE_STR "writesize" +#define WRITE_SIZE(mtd) ((mtd)->writesize) +#else +#define WRITE_SIZE_STR "oobblock" +#define WRITE_SIZE(mtd) ((mtd)->oobblock) +#endif + +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 27)) +#define YAFFS_USE_WRITE_BEGIN_END 1 +#else +#define YAFFS_USE_WRITE_BEGIN_END 0 +#endif + +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 28)) +static uint32_t YCALCBLOCKS(uint64_t partition_size, uint32_t block_size) +{ + uint64_t result = partition_size; + do_div(result, block_size); + return (uint32_t)result; +} +#else +#define YCALCBLOCKS(s, b) ((s)/(b)) +#endif + +#include <linux/uaccess.h> +#include <linux/mtd/mtd.h> + +#include "yportenv.h" +#include "yaffs_trace.h" +#include "yaffs_guts.h" + +#include "yaffs_linux.h" + +#include "yaffs_mtdif.h" +#include "yaffs_mtdif1.h" +#include "yaffs_mtdif2.h" + +unsigned int yaffs_trace_mask = YAFFS_TRACE_BAD_BLOCKS | YAFFS_TRACE_ALWAYS; +unsigned int yaffs_wr_attempts = YAFFS_WR_ATTEMPTS; +unsigned int yaffs_auto_checkpoint = 1; +unsigned int yaffs_gc_control = 1; +unsigned int yaffs_bg_enable = 1; + +/* Module Parameters */ +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) +module_param(yaffs_trace_mask, uint, 0644); +module_param(yaffs_wr_attempts, uint, 0644); +module_param(yaffs_auto_checkpoint, uint, 0644); +module_param(yaffs_gc_control, uint, 0644); +module_param(yaffs_bg_enable, uint, 0644); +#else +MODULE_PARM(yaffs_trace_mask, "i"); +MODULE_PARM(yaffs_wr_attempts, "i"); +MODULE_PARM(yaffs_auto_checkpoint, "i"); +MODULE_PARM(yaffs_gc_control, "i"); +#endif + +#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 25)) +/* use iget and read_inode */ +#define Y_IGET(sb, inum) iget((sb), (inum)) +static void yaffs_read_inode(struct inode *inode); + +#else +/* Call local equivalent */ +#define YAFFS_USE_OWN_IGET +#define Y_IGET(sb, inum) yaffs_iget((sb), (inum)) + +static struct inode *yaffs_iget(struct super_block *sb, unsigned long ino); +#endif + +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 18)) +#define yaffs_InodeToObjectLV(iptr) ((iptr)->i_private) +#else +#define yaffs_InodeToObjectLV(iptr) ((iptr)->u.generic_ip) +#endif + +#define yaffs_InodeToObject(iptr) ((yaffs_obj_t *)(yaffs_InodeToObjectLV(iptr))) +#define yaffs_dentry_to_obj(dptr) yaffs_InodeToObject((dptr)->d_inode) + +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) +#define yaffs_SuperToDevice(sb) ((yaffs_dev_t *)sb->s_fs_info) +#else +#define yaffs_SuperToDevice(sb) ((yaffs_dev_t *)sb->u.generic_sbp) +#endif + + +#define update_dir_time(dir) do {\ + (dir)->i_ctime = (dir)->i_mtime = CURRENT_TIME; \ + } while(0) + +static void yaffs_put_super(struct super_block *sb); + +static ssize_t yaffs_file_write(struct file *f, const char *buf, size_t n, + loff_t *pos); +static ssize_t yaffs_hold_space(struct file *f); +static void yaffs_release_space(struct file *f); + +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) +static int yaffs_file_flush(struct file *file, fl_owner_t id); +#else +static int yaffs_file_flush(struct file *file); +#endif + +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 34)) +static int yaffs_sync_object(struct file *file, int datasync); +#else +static int yaffs_sync_object(struct file *file, struct dentry *dentry, + int datasync); +#endif + +static int yaffs_readdir(struct file *f, void *dirent, filldir_t filldir); + +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) +static int yaffs_create(struct inode *dir, struct dentry *dentry, int mode, + struct nameidata *n); +static struct dentry *yaffs_lookup(struct inode *dir, struct dentry *dentry, + struct nameidata *n); +#else +static int yaffs_create(struct inode *dir, struct dentry *dentry, int mode); +static struct dentry *yaffs_lookup(struct inode *dir, struct dentry *dentry); +#endif +static int yaffs_link(struct dentry *old_dentry, struct inode *dir, + struct dentry *dentry); +static int yaffs_unlink(struct inode *dir, struct dentry *dentry); +static int yaffs_symlink(struct inode *dir, struct dentry *dentry, + const char *symname); +static int yaffs_mkdir(struct inode *dir, struct dentry *dentry, int mode); + +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) +static int yaffs_mknod(struct inode *dir, struct dentry *dentry, int mode, + dev_t dev); +#else +static int yaffs_mknod(struct inode *dir, struct dentry *dentry, int mode, + int dev); +#endif +static int yaffs_rename(struct inode *old_dir, struct dentry *old_dentry, + struct inode *new_dir, struct dentry *new_dentry); +static int yaffs_setattr(struct dentry *dentry, struct iattr *attr); + +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) +static int yaffs_sync_fs(struct super_block *sb, int wait); +static void yaffs_write_super(struct super_block *sb); +#else +static int yaffs_sync_fs(struct super_block *sb); +static int yaffs_write_super(struct super_block *sb); +#endif + +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) +static int yaffs_statfs(struct dentry *dentry, struct kstatfs *buf); +#elif (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) +static int yaffs_statfs(struct super_block *sb, struct kstatfs *buf); +#else +static int yaffs_statfs(struct super_block *sb, struct statfs *buf); +#endif + +#ifdef YAFFS_HAS_PUT_INODE +static void yaffs_put_inode(struct inode *inode); +#endif + +#ifdef YAFFS_HAS_EVICT_INODE +static void yaffs_evict_inode(struct inode *); +#else +static void yaffs_delete_inode(struct inode *); +static void yaffs_clear_inode(struct inode *); +#endif + +static int yaffs_readpage(struct file *file, struct page *page); +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) +static int yaffs_writepage(struct page *page, struct writeback_control *wbc); +#else +static int yaffs_writepage(struct page *page); +#endif + +#ifdef CONFIG_YAFFS_XATTR +int yaffs_setxattr(struct dentry *dentry, const char *name, + const void *value, size_t size, int flags); +ssize_t yaffs_getxattr(struct dentry *dentry, const char *name, void *buff, + size_t size); +int yaffs_removexattr(struct dentry *dentry, const char *name); +ssize_t yaffs_listxattr(struct dentry *dentry, char *buff, size_t size); +#endif + + +#if (YAFFS_USE_WRITE_BEGIN_END != 0) +static int yaffs_write_begin(struct file *filp, struct address_space *mapping, + loff_t pos, unsigned len, unsigned flags, + struct page **pagep, void **fsdata); +static int yaffs_write_end(struct file *filp, struct address_space *mapping, + loff_t pos, unsigned len, unsigned copied, + struct page *pg, void *fsdadata); +#else +static int yaffs_prepare_write(struct file *f, struct page *pg, + unsigned offset, unsigned to); +static int yaffs_commit_write(struct file *f, struct page *pg, unsigned offset, + unsigned to); + +#endif + +static int yaffs_readlink(struct dentry *dentry, char __user *buffer, + int buflen); +#if (YAFFS_NEW_FOLLOW_LINK == 1) +void yaffs_put_link(struct dentry *dentry, struct nameidata *nd, void *alias); +static void *yaffs_follow_link(struct dentry *dentry, struct nameidata *nd); +#else +static int yaffs_follow_link(struct dentry *dentry, struct nameidata *nd); +#endif + +static void yaffs_touch_super(yaffs_dev_t *dev); + +static loff_t yaffs_dir_llseek(struct file *file, loff_t offset, int origin); + +static int yaffs_vfs_setattr(struct inode *, struct iattr *); + + +static struct address_space_operations yaffs_file_address_operations = { + .readpage = yaffs_readpage, + .writepage = yaffs_writepage, +#if (YAFFS_USE_WRITE_BEGIN_END > 0) + .write_begin = yaffs_write_begin, + .write_end = yaffs_write_end, +#else + .prepare_write = yaffs_prepare_write, + .commit_write = yaffs_commit_write, +#endif +}; + + +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 22)) +static const struct file_operations yaffs_file_operations = { + .read = do_sync_read, + .write = do_sync_write, + .aio_read = generic_file_aio_read, + .aio_write = generic_file_aio_write, + .mmap = generic_file_mmap, + .flush = yaffs_file_flush, + .fsync = yaffs_sync_object, + .splice_read = generic_file_splice_read, + .splice_write = generic_file_splice_write, + .llseek = generic_file_llseek, +}; + +#elif (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 18)) + +static const struct file_operations yaffs_file_operations = { + .read = do_sync_read, + .write = do_sync_write, + .aio_read = generic_file_aio_read, + .aio_write = generic_file_aio_write, + .mmap = generic_file_mmap, + .flush = yaffs_file_flush, + .fsync = yaffs_sync_object, + .sendfile = generic_file_sendfile, +}; + +#else + +static const struct file_operations yaffs_file_operations = { + .read = generic_file_read, + .write = generic_file_write, + .mmap = generic_file_mmap, + .flush = yaffs_file_flush, + .fsync = yaffs_sync_object, +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) + .sendfile = generic_file_sendfile, +#endif +}; +#endif + +#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,25)) +static void zero_user_segment(struct page *page, unsigned start, unsigned end) +{ + void * kaddr = kmap_atomic(page, KM_USER0); + memset(kaddr + start, 0, end - start); + kunmap_atomic(kaddr, KM_USER0); + flush_dcache_page(page); +} +#endif + + +static const struct inode_operations yaffs_file_inode_operations = { + .setattr = yaffs_setattr, +#ifdef CONFIG_YAFFS_XATTR + .setxattr = yaffs_setxattr, + .getxattr = yaffs_getxattr, + .listxattr = yaffs_listxattr, + .removexattr = yaffs_removexattr, +#endif +}; + +static const struct inode_operations yaffs_symlink_inode_operations = { + .readlink = yaffs_readlink, + .follow_link = yaffs_follow_link, +#if (YAFFS_NEW_FOLLOW_LINK == 1) + .put_link = yaffs_put_link, +#endif + .setattr = yaffs_setattr, +#ifdef CONFIG_YAFFS_XATTR + .setxattr = yaffs_setxattr, + .getxattr = yaffs_getxattr, + .listxattr = yaffs_listxattr, + .removexattr = yaffs_removexattr, +#endif +}; + +static const struct inode_operations yaffs_dir_inode_operations = { + .create = yaffs_create, + .lookup = yaffs_lookup, + .link = yaffs_link, + .unlink = yaffs_unlink, + .symlink = yaffs_symlink, + .mkdir = yaffs_mkdir, + .rmdir = yaffs_unlink, + .mknod = yaffs_mknod, + .rename = yaffs_rename, + .setattr = yaffs_setattr, +#ifdef CONFIG_YAFFS_XATTR + .setxattr = yaffs_setxattr, + .getxattr = yaffs_getxattr, + .listxattr = yaffs_listxattr, + .removexattr = yaffs_removexattr, +#endif +}; + +static const struct file_operations yaffs_dir_operations = { + .read = generic_read_dir, + .readdir = yaffs_readdir, + .fsync = yaffs_sync_object, + .llseek = yaffs_dir_llseek, +}; + +static const struct super_operations yaffs_super_ops = { + .statfs = yaffs_statfs, + +#ifndef YAFFS_USE_OWN_IGET + .read_inode = yaffs_read_inode, +#endif +#ifdef YAFFS_HAS_PUT_INODE + .put_inode = yaffs_put_inode, +#endif + .put_super = yaffs_put_super, +#ifdef YAFFS_HAS_EVICT_INODE + .evict_inode = yaffs_evict_inode, +#else + .delete_inode = yaffs_delete_inode, + .clear_inode = yaffs_clear_inode, +#endif + .sync_fs = yaffs_sync_fs, + .write_super = yaffs_write_super, +}; + + +static int yaffs_vfs_setattr(struct inode *inode, struct iattr *attr) +{ +#ifdef YAFFS_USE_SETATTR_COPY + setattr_copy(inode,attr); + return 0; +#else + return inode_setattr(inode, attr); +#endif + +} + +static int yaffs_vfs_setsize(struct inode *inode, loff_t newsize) +{ +#ifdef YAFFS_USE_TRUNCATE_SETSIZE + truncate_setsize(inode,newsize); + return 0; +#else + truncate_inode_pages(&inode->i_data,newsize); + return 0; +#endif + +} + +static unsigned yaffs_gc_control_callback(yaffs_dev_t *dev) +{ + return yaffs_gc_control; +} + +static void yaffs_gross_lock(yaffs_dev_t *dev) +{ + T(YAFFS_TRACE_LOCK, (TSTR("yaffs locking %p\n"), current)); + down(&(yaffs_dev_to_lc(dev)->grossLock)); + T(YAFFS_TRACE_LOCK, (TSTR("yaffs locked %p\n"), current)); +} + +static void yaffs_gross_unlock(yaffs_dev_t *dev) +{ + T(YAFFS_TRACE_LOCK, (TSTR("yaffs unlocking %p\n"), current)); + up(&(yaffs_dev_to_lc(dev)->grossLock)); +} + +#ifdef YAFFS_COMPILE_EXPORTFS + +static struct inode * +yaffs2_nfs_get_inode(struct super_block *sb, uint64_t ino, uint32_t generation) +{ + return Y_IGET(sb, ino); +} + +static struct dentry * +yaffs2_fh_to_dentry(struct super_block *sb, struct fid *fid, int fh_len, int fh_type) +{ + return generic_fh_to_dentry(sb, fid, fh_len, fh_type, yaffs2_nfs_get_inode) ; +} + +static struct dentry * + yaffs2_fh_to_parent(struct super_block *sb, struct fid *fid, int fh_len, int fh_type) +{ + return generic_fh_to_parent(sb, fid, fh_len, fh_type, yaffs2_nfs_get_inode); +} + +struct dentry *yaffs2_get_parent(struct dentry *dentry) +{ + + struct super_block *sb = dentry->d_inode->i_sb; + struct dentry *parent = ERR_PTR(-ENOENT); + struct inode *inode; + unsigned long parent_ino; + yaffs_obj_t *d_obj; + yaffs_obj_t *parent_obj; + + d_obj = yaffs_InodeToObject(dentry->d_inode); + + if (d_obj) { + parent_obj = d_obj->parent; + if (parent_obj) { + parent_ino = yaffs_get_obj_inode(parent_obj); + inode = Y_IGET(sb, parent_ino); + + if (IS_ERR(inode)) { + parent = ERR_CAST(inode); + } else { + parent = d_obtain_alias(inode); + if (!IS_ERR(parent)) { + parent = ERR_PTR(-ENOMEM); + iput(inode); + } + } + } + } + + return parent; +} + +/* Just declare a zero structure as a NULL value implies + * using the default functions of exportfs. + */ + +static struct export_operations yaffs_export_ops = +{ + .fh_to_dentry = yaffs2_fh_to_dentry, + .fh_to_parent = yaffs2_fh_to_parent, + .get_parent = yaffs2_get_parent, +} ; + +#endif + +/*-----------------------------------------------------------------*/ +/* Directory search context allows us to unlock access to yaffs during + * filldir without causing problems with the directory being modified. + * This is similar to the tried and tested mechanism used in yaffs direct. + * + * A search context iterates along a doubly linked list of siblings in the + * directory. If the iterating object is deleted then this would corrupt + * the list iteration, likely causing a crash. The search context avoids + * this by using the remove_obj_fn to move the search context to the + * next object before the object is deleted. + * + * Many readdirs (and thus seach conexts) may be alive simulateously so + * each yaffs_dev_t has a list of these. + * + * A seach context lives for the duration of a readdir. + * + * All these functions must be called while yaffs is locked. + */ + +struct yaffs_SearchContext { + yaffs_dev_t *dev; + yaffs_obj_t *dirObj; + yaffs_obj_t *nextReturn; + struct ylist_head others; +}; + +/* + * yaffs_NewSearch() creates a new search context, initialises it and + * adds it to the device's search context list. + * + * Called at start of readdir. + */ +static struct yaffs_SearchContext * yaffs_NewSearch(yaffs_obj_t *dir) +{ + yaffs_dev_t *dev = dir->my_dev; + struct yaffs_SearchContext *sc = YMALLOC(sizeof(struct yaffs_SearchContext)); + if(sc){ + sc->dirObj = dir; + sc->dev = dev; + if( ylist_empty(&sc->dirObj->variant.dir_variant.children)) + sc->nextReturn = NULL; + else + sc->nextReturn = ylist_entry( + dir->variant.dir_variant.children.next, + yaffs_obj_t,siblings); + YINIT_LIST_HEAD(&sc->others); + ylist_add(&sc->others,&(yaffs_dev_to_lc(dev)->searchContexts)); + } + return sc; +} + +/* + * yaffs_search_end() disposes of a search context and cleans up. + */ +static void yaffs_search_end(struct yaffs_SearchContext * sc) +{ + if(sc){ + ylist_del(&sc->others); + YFREE(sc); + } +} + +/* + * yaffs_search_advance() moves a search context to the next object. + * Called when the search iterates or when an object removal causes + * the search context to be moved to the next object. + */ +static void yaffs_search_advance(struct yaffs_SearchContext *sc) +{ + if(!sc) + return; + + if( sc->nextReturn == NULL || + ylist_empty(&sc->dirObj->variant.dir_variant.children)) + sc->nextReturn = NULL; + else { + struct ylist_head *next = sc->nextReturn->siblings.next; + + if( next == &sc->dirObj->variant.dir_variant.children) + sc->nextReturn = NULL; /* end of list */ + else + sc->nextReturn = ylist_entry(next,yaffs_obj_t,siblings); + } +} + +/* + * yaffs_remove_obj_callback() is called when an object is unlinked. + * We check open search contexts and advance any which are currently + * on the object being iterated. + */ +static void yaffs_remove_obj_callback(yaffs_obj_t *obj) +{ + + struct ylist_head *i; + struct yaffs_SearchContext *sc; + struct ylist_head *search_contexts = &(yaffs_dev_to_lc(obj->my_dev)->searchContexts); + + + /* Iterate through the directory search contexts. + * If any are currently on the object being removed, then advance + * the search context to the next object to prevent a hanging pointer. + */ + ylist_for_each(i, search_contexts) { + if (i) { + sc = ylist_entry(i, struct yaffs_SearchContext,others); + if(sc->nextReturn == obj) + yaffs_search_advance(sc); + } + } + +} + + +/*-----------------------------------------------------------------*/ + +static int yaffs_readlink(struct dentry *dentry, char __user *buffer, + int buflen) +{ + unsigned char *alias; + int ret; + + yaffs_dev_t *dev = yaffs_dentry_to_obj(dentry)->my_dev; + + yaffs_gross_lock(dev); + + alias = yaffs_get_symlink_alias(yaffs_dentry_to_obj(dentry)); + + yaffs_gross_unlock(dev); + + if (!alias) + return -ENOMEM; + + ret = vfs_readlink(dentry, buffer, buflen, alias); + kfree(alias); + return ret; +} + +#if (YAFFS_NEW_FOLLOW_LINK == 1) +static void *yaffs_follow_link(struct dentry *dentry, struct nameidata *nd) +#else +static int yaffs_follow_link(struct dentry *dentry, struct nameidata *nd) +#endif +{ + unsigned char *alias; + int ret; + yaffs_dev_t *dev = yaffs_dentry_to_obj(dentry)->my_dev; + + yaffs_gross_lock(dev); + + alias = yaffs_get_symlink_alias(yaffs_dentry_to_obj(dentry)); + yaffs_gross_unlock(dev); + + if (!alias) { + ret = -ENOMEM; + goto out; + } + +#if (YAFFS_NEW_FOLLOW_LINK == 1) + nd_set_link(nd, alias); + ret = (int)alias; +out: + return ERR_PTR(ret); +#else + ret = vfs_follow_link(nd, alias); + kfree(alias); +out: + return ret; +#endif +} + +#if (YAFFS_NEW_FOLLOW_LINK == 1) +void yaffs_put_link(struct dentry *dentry, struct nameidata *nd, void *alias) { + kfree(alias); +} +#endif + +struct inode *yaffs_get_inode(struct super_block *sb, int mode, int dev, + yaffs_obj_t *obj); + +/* + * Lookup is used to find objects in the fs + */ +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) + +static struct dentry *yaffs_lookup(struct inode *dir, struct dentry *dentry, + struct nameidata *n) +#else +static struct dentry *yaffs_lookup(struct inode *dir, struct dentry *dentry) +#endif +{ + yaffs_obj_t *obj; + struct inode *inode = NULL; /* NCB 2.5/2.6 needs NULL here */ + + yaffs_dev_t *dev = yaffs_InodeToObject(dir)->my_dev; + + if(current != yaffs_dev_to_lc(dev)->readdirProcess) + yaffs_gross_lock(dev); + + T(YAFFS_TRACE_OS, + (TSTR("yaffs_lookup for %d:%s\n"), + yaffs_InodeToObject(dir)->obj_id, dentry->d_name.name)); + + obj = yaffs_find_by_name(yaffs_InodeToObject(dir), + dentry->d_name.name); + + obj = yaffs_get_equivalent_obj(obj); /* in case it was a hardlink */ + + /* Can't hold gross lock when calling yaffs_get_inode() */ + if(current != yaffs_dev_to_lc(dev)->readdirProcess) + yaffs_gross_unlock(dev); + + if (obj) { + T(YAFFS_TRACE_OS, + (TSTR("yaffs_lookup found %d\n"), obj->obj_id)); + + inode = yaffs_get_inode(dir->i_sb, obj->yst_mode, 0, obj); + + if (inode) { + T(YAFFS_TRACE_OS, + (TSTR("yaffs_loookup dentry \n"))); +/* #if 0 asserted by NCB for 2.5/6 compatability - falls through to + * d_add even if NULL inode */ +#if 0 + /*dget(dentry); // try to solve directory bug */ + d_add(dentry, inode); + + /* return dentry; */ + return NULL; +#endif + } + + } else { + T(YAFFS_TRACE_OS,(TSTR("yaffs_lookup not found\n"))); + + } + +/* added NCB for 2.5/6 compatability - forces add even if inode is + * NULL which creates dentry hash */ + d_add(dentry, inode); + + return NULL; +} + + +#ifdef YAFFS_HAS_PUT_INODE + +/* For now put inode is just for debugging + * Put inode is called when the inode **structure** is put. + */ +static void yaffs_put_inode(struct inode *inode) +{ + T(YAFFS_TRACE_OS, + (TSTR("yaffs_put_inode: ino %d, count %d\n"), (int)inode->i_ino, + atomic_read(&inode->i_count))); + +} +#endif + + +static void yaffs_unstitch_obj(struct inode *inode, yaffs_obj_t *obj) +{ + /* Clear the association between the inode and + * the yaffs_obj_t. + */ + obj->my_inode = NULL; + yaffs_InodeToObjectLV(inode) = NULL; + + /* If the object freeing was deferred, then the real + * free happens now. + * This should fix the inode inconsistency problem. + */ + yaffs_handle_defered_free(obj); +} + +#ifdef YAFFS_HAS_EVICT_INODE +/* yaffs_evict_inode combines into one operation what was previously done in + * yaffs_clear_inode() and yaffs_delete_inode() + * + */ +static void yaffs_evict_inode( struct inode *inode) +{ + yaffs_obj_t *obj; + yaffs_dev_t *dev; + int deleteme = 0; + + obj = yaffs_InodeToObject(inode); + + T(YAFFS_TRACE_OS, + (TSTR("yaffs_evict_inode: ino %d, count %d %s\n"), (int)inode->i_ino, + atomic_read(&inode->i_count), + obj ? "object exists" : "null object")); + + if (!inode->i_nlink && !is_bad_inode(inode)) + deleteme = 1; + truncate_inode_pages(&inode->i_data,0); + end_writeback(inode); + + if(deleteme && obj){ + dev = obj->my_dev; + yaffs_gross_lock(dev); + yaffs_del_obj(obj); + yaffs_gross_unlock(dev); + } + if (obj) { + dev = obj->my_dev; + yaffs_gross_lock(dev); + yaffs_unstitch_obj(inode,obj); + yaffs_gross_unlock(dev); + } + + +} +#else + +/* clear is called to tell the fs to release any per-inode data it holds. + * The object might still exist on disk and is just being thrown out of the cache + * or else the object has actually been deleted and we're being called via + * the chain + * yaffs_delete_inode() -> clear_inode()->yaffs_clear_inode() + */ + +static void yaffs_clear_inode(struct inode *inode) +{ + yaffs_obj_t *obj; + yaffs_dev_t *dev; + + obj = yaffs_InodeToObject(inode); + + T(YAFFS_TRACE_OS, + (TSTR("yaffs_clear_inode: ino %d, count %d %s\n"), (int)inode->i_ino, + atomic_read(&inode->i_count), + obj ? "object exists" : "null object")); + + if (obj) { + dev = obj->my_dev; + yaffs_gross_lock(dev); + yaffs_unstitch_obj(inode,obj); + yaffs_gross_unlock(dev); + } + +} + +/* delete is called when the link count is zero and the inode + * is put (ie. nobody wants to know about it anymore, time to + * delete the file). + * NB Must call clear_inode() + */ +static void yaffs_delete_inode(struct inode *inode) +{ + yaffs_obj_t *obj = yaffs_InodeToObject(inode); + yaffs_dev_t *dev; + + T(YAFFS_TRACE_OS, + (TSTR("yaffs_delete_inode: ino %d, count %d %s\n"), (int)inode->i_ino, + atomic_read(&inode->i_count), + obj ? "object exists" : "null object")); + + if (obj) { + dev = obj->my_dev; + yaffs_gross_lock(dev); + yaffs_del_obj(obj); + yaffs_gross_unlock(dev); + } +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 13)) + truncate_inode_pages(&inode->i_data, 0); +#endif + clear_inode(inode); +} +#endif + + +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) +static int yaffs_file_flush(struct file *file, fl_owner_t id) +#else +static int yaffs_file_flush(struct file *file) +#endif +{ + yaffs_obj_t *obj = yaffs_dentry_to_obj(file->f_dentry); + + yaffs_dev_t *dev = obj->my_dev; + + T(YAFFS_TRACE_OS, + (TSTR("yaffs_file_flush object %d (%s)\n"), obj->obj_id, + obj->dirty ? "dirty" : "clean")); + + yaffs_gross_lock(dev); + + yaffs_flush_file(obj, 1, 0); + + yaffs_gross_unlock(dev); + + return 0; +} + +static int yaffs_readpage_nolock(struct file *f, struct page *pg) +{ + /* Lifted from jffs2 */ + + yaffs_obj_t *obj; + unsigned char *pg_buf; + int ret; + + yaffs_dev_t *dev; + + T(YAFFS_TRACE_OS, + (TSTR("yaffs_readpage_nolock at %08x, size %08x\n"), + (unsigned)(pg->index << PAGE_CACHE_SHIFT), + (unsigned)PAGE_CACHE_SIZE)); + + obj = yaffs_dentry_to_obj(f->f_dentry); + + dev = obj->my_dev; + +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) + BUG_ON(!PageLocked(pg)); +#else + if (!PageLocked(pg)) + PAGE_BUG(pg); +#endif + + pg_buf = kmap(pg); + /* FIXME: Can kmap fail? */ + + yaffs_gross_lock(dev); + + ret = yaffs_file_rd(obj, pg_buf, + pg->index << PAGE_CACHE_SHIFT, + PAGE_CACHE_SIZE); + + yaffs_gross_unlock(dev); + + if (ret >= 0) + ret = 0; + + if (ret) { + ClearPageUptodate(pg); + SetPageError(pg); + } else { + SetPageUptodate(pg); + ClearPageError(pg); + } + + flush_dcache_page(pg); + kunmap(pg); + + T(YAFFS_TRACE_OS, (TSTR("yaffs_readpage_nolock done\n"))); + return ret; +} + +static int yaffs_readpage_unlock(struct file *f, struct page *pg) +{ + int ret = yaffs_readpage_nolock(f, pg); + UnlockPage(pg); + return ret; +} + +static int yaffs_readpage(struct file *f, struct page *pg) +{ + int ret; + + T(YAFFS_TRACE_OS, (TSTR("yaffs_readpage\n"))); + ret=yaffs_readpage_unlock(f, pg); + T(YAFFS_TRACE_OS, (TSTR("yaffs_readpage done\n"))); + return ret; +} + +/* writepage inspired by/stolen from smbfs */ + +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) +static int yaffs_writepage(struct page *page, struct writeback_control *wbc) +#else +static int yaffs_writepage(struct page *page) +#endif +{ + yaffs_dev_t *dev; + struct address_space *mapping = page->mapping; + struct inode *inode; + unsigned long end_index; + char *buffer; + yaffs_obj_t *obj; + int nWritten = 0; + unsigned n_bytes; + loff_t i_size; + + if (!mapping) + BUG(); + inode = mapping->host; + if (!inode) + BUG(); + i_size = i_size_read(inode); + + end_index = i_size >> PAGE_CACHE_SHIFT; + + if(page->index < end_index) + n_bytes = PAGE_CACHE_SIZE; + else { + n_bytes = i_size & (PAGE_CACHE_SIZE -1); + + if (page->index > end_index || !n_bytes) { + T(YAFFS_TRACE_OS, + (TSTR("yaffs_writepage at %08x, inode size = %08x!!!\n"), + (unsigned)(page->index << PAGE_CACHE_SHIFT), + (unsigned)inode->i_size)); + T(YAFFS_TRACE_OS, + (TSTR(" -> don't care!!\n"))); + + zero_user_segment(page,0,PAGE_CACHE_SIZE); + set_page_writeback(page); + unlock_page(page); + end_page_writeback(page); + return 0; + } + } + + if(n_bytes != PAGE_CACHE_SIZE) + zero_user_segment(page,n_bytes,PAGE_CACHE_SIZE); + + get_page(page); + + buffer = kmap(page); + + obj = yaffs_InodeToObject(inode); + dev = obj->my_dev; + yaffs_gross_lock(dev); + + T(YAFFS_TRACE_OS, + (TSTR("yaffs_writepage at %08x, size %08x\n"), + (unsigned)(page->index << PAGE_CACHE_SHIFT), n_bytes)); + T(YAFFS_TRACE_OS, + (TSTR("writepag0: obj = %05x, ino = %05x\n"), + (int)obj->variant.file_variant.file_size, (int)inode->i_size)); + + nWritten = yaffs_wr_file(obj, buffer, + page->index << PAGE_CACHE_SHIFT, n_bytes, 0); + + yaffs_touch_super(dev); + + T(YAFFS_TRACE_OS, + (TSTR("writepag1: obj = %05x, ino = %05x\n"), + (int)obj->variant.file_variant.file_size, (int)inode->i_size)); + + yaffs_gross_unlock(dev); + + kunmap(page); + set_page_writeback(page); + unlock_page(page); + end_page_writeback(page); + put_page(page); + + return (nWritten == n_bytes) ? 0 : -ENOSPC; +} + + +#if (YAFFS_USE_WRITE_BEGIN_END > 0) +static int yaffs_write_begin(struct file *filp, struct address_space *mapping, + loff_t pos, unsigned len, unsigned flags, + struct page **pagep, void **fsdata) +{ + struct page *pg = NULL; + pgoff_t index = pos >> PAGE_CACHE_SHIFT; + + int ret = 0; + int space_held = 0; + + /* Get a page */ +#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 28) + pg = grab_cache_page_write_begin(mapping, index, flags); +#else + pg = __grab_cache_page(mapping, index); +#endif + + *pagep = pg; + if (!pg) { + ret = -ENOMEM; + goto out; + } + T(YAFFS_TRACE_OS, + (TSTR("start yaffs_write_begin index %d(%x) uptodate %d\n"), + (int)index,(int)index,Page_Uptodate(pg) ? 1 : 0)); + + /* Get fs space */ + space_held = yaffs_hold_space(filp); + + if (!space_held) { + ret = -ENOSPC; + goto out; + } + + /* Update page if required */ + + if (!Page_Uptodate(pg)) + ret = yaffs_readpage_nolock(filp, pg); + + if (ret) + goto out; + + /* Happy path return */ + T(YAFFS_TRACE_OS, (TSTR("end yaffs_write_begin - ok\n"))); + + return 0; + +out: + T(YAFFS_TRACE_OS, + (TSTR("end yaffs_write_begin fail returning %d\n"), ret)); + if (space_held) + yaffs_release_space(filp); + if (pg) { + unlock_page(pg); + page_cache_release(pg); + } + return ret; +} + +#else + +static int yaffs_prepare_write(struct file *f, struct page *pg, + unsigned offset, unsigned to) +{ + T(YAFFS_TRACE_OS, (TSTR("yaffs_prepair_write\n"))); + + if (!Page_Uptodate(pg)) + return yaffs_readpage_nolock(f, pg); + return 0; +} +#endif + +#if (YAFFS_USE_WRITE_BEGIN_END > 0) +static int yaffs_write_end(struct file *filp, struct address_space *mapping, + loff_t pos, unsigned len, unsigned copied, + struct page *pg, void *fsdadata) +{ + int ret = 0; + void *addr, *kva; + uint32_t offset_into_page = pos & (PAGE_CACHE_SIZE - 1); + + kva = kmap(pg); + addr = kva + offset_into_page; + + T(YAFFS_TRACE_OS, + ("yaffs_write_end addr %p pos %x n_bytes %d\n", + addr,(unsigned)pos, copied)); + + ret = yaffs_file_write(filp, addr, copied, &pos); + + if (ret != copied) { + T(YAFFS_TRACE_OS, + (TSTR("yaffs_write_end not same size ret %d copied %d\n"), + ret, copied)); + SetPageError(pg); + } else { + /* Nothing */ + } + + kunmap(pg); + + yaffs_release_space(filp); + unlock_page(pg); + page_cache_release(pg); + return ret; +} +#else + +static int yaffs_commit_write(struct file *f, struct page *pg, unsigned offset, + unsigned to) +{ + void *addr, *kva; + + loff_t pos = (((loff_t) pg->index) << PAGE_CACHE_SHIFT) + offset; + int n_bytes = to - offset; + int nWritten; + + unsigned spos = pos; + unsigned saddr; + + kva = kmap(pg); + addr = kva + offset; + + saddr = (unsigned) addr; + + T(YAFFS_TRACE_OS, + (TSTR("yaffs_commit_write addr %x pos %x n_bytes %d\n"), + saddr, spos, n_bytes)); + + nWritten = yaffs_file_write(f, addr, n_bytes, &pos); + + if (nWritten != n_bytes) { + T(YAFFS_TRACE_OS, + (TSTR("yaffs_commit_write not same size nWritten %d n_bytes %d\n"), + nWritten, n_bytes)); + SetPageError(pg); + } else { + /* Nothing */ + } + + kunmap(pg); + + T(YAFFS_TRACE_OS, + (TSTR("yaffs_commit_write returning %d\n"), + nWritten == n_bytes ? 0 : nWritten)); + + return nWritten == n_bytes ? 0 : nWritten; +} +#endif + + +static void yaffs_fill_inode_from_obj(struct inode *inode, yaffs_obj_t *obj) +{ + if (inode && obj) { + + + /* Check mode against the variant type and attempt to repair if broken. */ + __u32 mode = obj->yst_mode; + switch (obj->variant_type) { + case YAFFS_OBJECT_TYPE_FILE: + if (!S_ISREG(mode)) { + obj->yst_mode &= ~S_IFMT; + obj->yst_mode |= S_IFREG; + } + + break; + case YAFFS_OBJECT_TYPE_SYMLINK: + if (!S_ISLNK(mode)) { + obj->yst_mode &= ~S_IFMT; + obj->yst_mode |= S_IFLNK; + } + + break; + case YAFFS_OBJECT_TYPE_DIRECTORY: + if (!S_ISDIR(mode)) { + obj->yst_mode &= ~S_IFMT; + obj->yst_mode |= S_IFDIR; + } + + break; + case YAFFS_OBJECT_TYPE_UNKNOWN: + case YAFFS_OBJECT_TYPE_HARDLINK: + case YAFFS_OBJECT_TYPE_SPECIAL: + default: + /* TODO? */ + break; + } + + inode->i_flags |= S_NOATIME; + + inode->i_ino = obj->obj_id; + inode->i_mode = obj->yst_mode; + inode->i_uid = obj->yst_uid; + inode->i_gid = obj->yst_gid; +#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 19)) + inode->i_blksize = inode->i_sb->s_blocksize; +#endif +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) + + inode->i_rdev = old_decode_dev(obj->yst_rdev); + inode->i_atime.tv_sec = (time_t) (obj->yst_atime); + inode->i_atime.tv_nsec = 0; + inode->i_mtime.tv_sec = (time_t) obj->yst_mtime; + inode->i_mtime.tv_nsec = 0; + inode->i_ctime.tv_sec = (time_t) obj->yst_ctime; + inode->i_ctime.tv_nsec = 0; +#else + inode->i_rdev = obj->yst_rdev; + inode->i_atime = obj->yst_atime; + inode->i_mtime = obj->yst_mtime; + inode->i_ctime = obj->yst_ctime; +#endif + inode->i_size = yaffs_get_obj_length(obj); + inode->i_blocks = (inode->i_size + 511) >> 9; + + inode->i_nlink = yaffs_get_obj_link_count(obj); + + T(YAFFS_TRACE_OS, + (TSTR("yaffs_fill_inode mode %x uid %d gid %d size %d count %d\n"), + inode->i_mode, inode->i_uid, inode->i_gid, + (int)inode->i_size, atomic_read(&inode->i_count))); + + switch (obj->yst_mode & S_IFMT) { + default: /* fifo, device or socket */ +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) + init_special_inode(inode, obj->yst_mode, + old_decode_dev(obj->yst_rdev)); +#else + init_special_inode(inode, obj->yst_mode, + (dev_t) (obj->yst_rdev)); +#endif + break; + case S_IFREG: /* file */ + inode->i_op = &yaffs_file_inode_operations; + inode->i_fop = &yaffs_file_operations; + inode->i_mapping->a_ops = + &yaffs_file_address_operations; + break; + case S_IFDIR: /* directory */ + inode->i_op = &yaffs_dir_inode_operations; + inode->i_fop = &yaffs_dir_operations; + break; + case S_IFLNK: /* symlink */ + inode->i_op = &yaffs_symlink_inode_operations; + break; + } + + yaffs_InodeToObjectLV(inode) = obj; + + obj->my_inode = inode; + + } else { + T(YAFFS_TRACE_OS, + (TSTR("yaffs_FileInode invalid parameters\n"))); + } + +} + +struct inode *yaffs_get_inode(struct super_block *sb, int mode, int dev, + yaffs_obj_t *obj) +{ + struct inode *inode; + + if (!sb) { + T(YAFFS_TRACE_OS, + (TSTR("yaffs_get_inode for NULL super_block!!\n"))); + return NULL; + + } + + if (!obj) { + T(YAFFS_TRACE_OS, + (TSTR("yaffs_get_inode for NULL object!!\n"))); + return NULL; + + } + + T(YAFFS_TRACE_OS, + (TSTR("yaffs_get_inode for object %d\n"), obj->obj_id)); + + inode = Y_IGET(sb, obj->obj_id); + if (IS_ERR(inode)) + return NULL; + + /* NB Side effect: iget calls back to yaffs_read_inode(). */ + /* iget also increments the inode's i_count */ + /* NB You can't be holding grossLock or deadlock will happen! */ + + return inode; +} + +static ssize_t yaffs_file_write(struct file *f, const char *buf, size_t n, + loff_t *pos) +{ + yaffs_obj_t *obj; + int nWritten, ipos; + struct inode *inode; + yaffs_dev_t *dev; + + obj = yaffs_dentry_to_obj(f->f_dentry); + + dev = obj->my_dev; + + yaffs_gross_lock(dev); + + inode = f->f_dentry->d_inode; + + if (!S_ISBLK(inode->i_mode) && f->f_flags & O_APPEND) + ipos = inode->i_size; + else + ipos = *pos; + + if (!obj) + T(YAFFS_TRACE_OS, + (TSTR("yaffs_file_write: hey obj is null!\n"))); + else + T(YAFFS_TRACE_OS, + (TSTR("yaffs_file_write about to write writing %u(%x) bytes" + "to object %d at %d(%x)\n"), + (unsigned) n, (unsigned) n, obj->obj_id, ipos,ipos)); + + nWritten = yaffs_wr_file(obj, buf, ipos, n, 0); + + yaffs_touch_super(dev); + + T(YAFFS_TRACE_OS, + (TSTR("yaffs_file_write: %d(%x) bytes written\n"), + (unsigned )n,(unsigned)n)); + + if (nWritten > 0) { + ipos += nWritten; + *pos = ipos; + if (ipos > inode->i_size) { + inode->i_size = ipos; + inode->i_blocks = (ipos + 511) >> 9; + + T(YAFFS_TRACE_OS, + (TSTR("yaffs_file_write size updated to %d bytes, " + "%d blocks\n"), + ipos, (int)(inode->i_blocks))); + } + + } + yaffs_gross_unlock(dev); + return (nWritten == 0) && (n > 0) ? -ENOSPC : nWritten; +} + +/* Space holding and freeing is done to ensure we have space available for write_begin/end */ +/* For now we just assume few parallel writes and check against a small number. */ +/* Todo: need to do this with a counter to handle parallel reads better */ + +static ssize_t yaffs_hold_space(struct file *f) +{ + yaffs_obj_t *obj; + yaffs_dev_t *dev; + + int n_free_chunks; + + + obj = yaffs_dentry_to_obj(f->f_dentry); + + dev = obj->my_dev; + + yaffs_gross_lock(dev); + + n_free_chunks = yaffs_get_n_free_chunks(dev); + + yaffs_gross_unlock(dev); + + return (n_free_chunks > 20) ? 1 : 0; +} + +static void yaffs_release_space(struct file *f) +{ + yaffs_obj_t *obj; + yaffs_dev_t *dev; + + + obj = yaffs_dentry_to_obj(f->f_dentry); + + dev = obj->my_dev; + + yaffs_gross_lock(dev); + + + yaffs_gross_unlock(dev); +} + + +static loff_t yaffs_dir_llseek(struct file *file, loff_t offset, int origin) +{ + long long retval; + + lock_kernel(); + + switch (origin){ + case 2: + offset += i_size_read(file->f_path.dentry->d_inode); + break; + case 1: + offset += file->f_pos; + } + retval = -EINVAL; + + if (offset >= 0){ + if (offset != file->f_pos) + file->f_pos = offset; + + retval = offset; + } + unlock_kernel(); + return retval; +} + + +static int yaffs_readdir(struct file *f, void *dirent, filldir_t filldir) +{ + yaffs_obj_t *obj; + yaffs_dev_t *dev; + struct yaffs_SearchContext *sc; + struct inode *inode = f->f_dentry->d_inode; + unsigned long offset, curoffs; + yaffs_obj_t *l; + int retVal = 0; + + char name[YAFFS_MAX_NAME_LENGTH + 1]; + + obj = yaffs_dentry_to_obj(f->f_dentry); + dev = obj->my_dev; + + yaffs_gross_lock(dev); + + yaffs_dev_to_lc(dev)->readdirProcess = current; + + offset = f->f_pos; + + sc = yaffs_NewSearch(obj); + if(!sc){ + retVal = -ENOMEM; + goto out; + } + + T(YAFFS_TRACE_OS, (TSTR("yaffs_readdir: starting at %d\n"), (int)offset)); + + if (offset == 0) { + T(YAFFS_TRACE_OS, + (TSTR("yaffs_readdir: entry . ino %d \n"), + (int)inode->i_ino)); + yaffs_gross_unlock(dev); + if (filldir(dirent, ".", 1, offset, inode->i_ino, DT_DIR) < 0){ + yaffs_gross_lock(dev); + goto out; + } + yaffs_gross_lock(dev); + offset++; + f->f_pos++; + } + if (offset == 1) { + T(YAFFS_TRACE_OS, + (TSTR("yaffs_readdir: entry .. ino %d \n"), + (int)f->f_dentry->d_parent->d_inode->i_ino)); + yaffs_gross_unlock(dev); + if (filldir(dirent, "..", 2, offset, + f->f_dentry->d_parent->d_inode->i_ino, DT_DIR) < 0){ + yaffs_gross_lock(dev); + goto out; + } + yaffs_gross_lock(dev); + offset++; + f->f_pos++; + } + + curoffs = 1; + + /* If the directory has changed since the open or last call to + readdir, rewind to after the 2 canned entries. */ + if (f->f_version != inode->i_version) { + offset = 2; + f->f_pos = offset; + f->f_version = inode->i_version; + } + + while(sc->nextReturn){ + curoffs++; + l = sc->nextReturn; + if (curoffs >= offset) { + int this_inode = yaffs_get_obj_inode(l); + int this_type = yaffs_get_obj_type(l); + + yaffs_get_obj_name(l, name, + YAFFS_MAX_NAME_LENGTH + 1); + T(YAFFS_TRACE_OS, + (TSTR("yaffs_readdir: %s inode %d\n"), + name, yaffs_get_obj_inode(l))); + + yaffs_gross_unlock(dev); + + if (filldir(dirent, + name, + strlen(name), + offset, + this_inode, + this_type) < 0){ + yaffs_gross_lock(dev); + goto out; + } + + yaffs_gross_lock(dev); + + offset++; + f->f_pos++; + } + yaffs_search_advance(sc); + } + +out: + yaffs_search_end(sc); + yaffs_dev_to_lc(dev)->readdirProcess = NULL; + yaffs_gross_unlock(dev); + + return retVal; +} + + + +/* + * File creation. Allocate an inode, and we're done.. + */ + +#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 29) +#define YCRED(x) x +#else +#define YCRED(x) (x->cred) +#endif + +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) +static int yaffs_mknod(struct inode *dir, struct dentry *dentry, int mode, + dev_t rdev) +#else +static int yaffs_mknod(struct inode *dir, struct dentry *dentry, int mode, + int rdev) +#endif +{ + struct inode *inode; + + yaffs_obj_t *obj = NULL; + yaffs_dev_t *dev; + + yaffs_obj_t *parent = yaffs_InodeToObject(dir); + + int error = -ENOSPC; + uid_t uid = YCRED(current)->fsuid; + gid_t gid = (dir->i_mode & S_ISGID) ? dir->i_gid : YCRED(current)->fsgid; + + if ((dir->i_mode & S_ISGID) && S_ISDIR(mode)) + mode |= S_ISGID; + + if (parent) { + T(YAFFS_TRACE_OS, + (TSTR("yaffs_mknod: parent object %d type %d\n"), + parent->obj_id, parent->variant_type)); + } else { + T(YAFFS_TRACE_OS, + (TSTR("yaffs_mknod: could not get parent object\n"))); + return -EPERM; + } + + T(YAFFS_TRACE_OS, (TSTR("yaffs_mknod: making oject for %s, " + "mode %x dev %x\n"), + dentry->d_name.name, mode, rdev)); + + dev = parent->my_dev; + + yaffs_gross_lock(dev); + + switch (mode & S_IFMT) { + default: + /* Special (socket, fifo, device...) */ + T(YAFFS_TRACE_OS, (TSTR("yaffs_mknod: making special\n"))); +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) + obj = yaffs_create_special(parent, dentry->d_name.name, mode, uid, + gid, old_encode_dev(rdev)); +#else + obj = yaffs_create_special(parent, dentry->d_name.name, mode, uid, + gid, rdev); +#endif + break; + case S_IFREG: /* file */ + T(YAFFS_TRACE_OS, (TSTR("yaffs_mknod: making file\n"))); + obj = yaffs_create_file(parent, dentry->d_name.name, mode, uid, + gid); + break; + case S_IFDIR: /* directory */ + T(YAFFS_TRACE_OS, + (TSTR("yaffs_mknod: making directory\n"))); + obj = yaffs_create_dir(parent, dentry->d_name.name, mode, + uid, gid); + break; + case S_IFLNK: /* symlink */ + T(YAFFS_TRACE_OS, (TSTR("yaffs_mknod: making symlink\n"))); + obj = NULL; /* Do we ever get here? */ + break; + } + + /* Can not call yaffs_get_inode() with gross lock held */ + yaffs_gross_unlock(dev); + + if (obj) { + inode = yaffs_get_inode(dir->i_sb, mode, rdev, obj); + d_instantiate(dentry, inode); + update_dir_time(dir); + T(YAFFS_TRACE_OS, + (TSTR("yaffs_mknod created object %d count = %d\n"), + obj->obj_id, atomic_read(&inode->i_count))); + error = 0; + yaffs_fill_inode_from_obj(dir,parent); + } else { + T(YAFFS_TRACE_OS, + (TSTR("yaffs_mknod failed making object\n"))); + error = -ENOMEM; + } + + return error; +} + +static int yaffs_mkdir(struct inode *dir, struct dentry *dentry, int mode) +{ + int retVal; + T(YAFFS_TRACE_OS, (TSTR("yaffs_mkdir\n"))); + retVal = yaffs_mknod(dir, dentry, mode | S_IFDIR, 0); + return retVal; +} + +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) +static int yaffs_create(struct inode *dir, struct dentry *dentry, int mode, + struct nameidata *n) +#else +static int yaffs_create(struct inode *dir, struct dentry *dentry, int mode) +#endif +{ + T(YAFFS_TRACE_OS,(TSTR("yaffs_create\n"))); + return yaffs_mknod(dir, dentry, mode | S_IFREG, 0); +} + +static int yaffs_unlink(struct inode *dir, struct dentry *dentry) +{ + int retVal; + + yaffs_dev_t *dev; + yaffs_obj_t *obj; + + T(YAFFS_TRACE_OS, + (TSTR("yaffs_unlink %d:%s\n"), + (int)(dir->i_ino), + dentry->d_name.name)); + obj = yaffs_InodeToObject(dir); + dev = obj->my_dev; + + yaffs_gross_lock(dev); + + retVal = yaffs_unlinker(obj, dentry->d_name.name); + + if (retVal == YAFFS_OK) { + dentry->d_inode->i_nlink--; + dir->i_version++; + yaffs_gross_unlock(dev); + mark_inode_dirty(dentry->d_inode); + update_dir_time(dir); + return 0; + } + yaffs_gross_unlock(dev); + return -ENOTEMPTY; +} + +/* + * Create a link... + */ +static int yaffs_link(struct dentry *old_dentry, struct inode *dir, + struct dentry *dentry) +{ + struct inode *inode = old_dentry->d_inode; + yaffs_obj_t *obj = NULL; + yaffs_obj_t *link = NULL; + yaffs_dev_t *dev; + + T(YAFFS_TRACE_OS, (TSTR("yaffs_link\n"))); + + obj = yaffs_InodeToObject(inode); + dev = obj->my_dev; + + yaffs_gross_lock(dev); + + if (!S_ISDIR(inode->i_mode)) /* Don't link directories */ + link = yaffs_link_obj(yaffs_InodeToObject(dir), dentry->d_name.name, + obj); + + if (link) { + old_dentry->d_inode->i_nlink = yaffs_get_obj_link_count(obj); + d_instantiate(dentry, old_dentry->d_inode); + atomic_inc(&old_dentry->d_inode->i_count); + T(YAFFS_TRACE_OS, + (TSTR("yaffs_link link count %d i_count %d\n"), + old_dentry->d_inode->i_nlink, + atomic_read(&old_dentry->d_inode->i_count))); + } + + yaffs_gross_unlock(dev); + + if (link){ + update_dir_time(dir); + return 0; + } + + return -EPERM; +} + +static int yaffs_symlink(struct inode *dir, struct dentry *dentry, + const char *symname) +{ + yaffs_obj_t *obj; + yaffs_dev_t *dev; + uid_t uid = YCRED(current)->fsuid; + gid_t gid = (dir->i_mode & S_ISGID) ? dir->i_gid : YCRED(current)->fsgid; + + T(YAFFS_TRACE_OS, (TSTR("yaffs_symlink\n"))); + + dev = yaffs_InodeToObject(dir)->my_dev; + yaffs_gross_lock(dev); + obj = yaffs_create_symlink(yaffs_InodeToObject(dir), dentry->d_name.name, + S_IFLNK | S_IRWXUGO, uid, gid, symname); + yaffs_gross_unlock(dev); + + if (obj) { + struct inode *inode; + + inode = yaffs_get_inode(dir->i_sb, obj->yst_mode, 0, obj); + d_instantiate(dentry, inode); + update_dir_time(dir); + T(YAFFS_TRACE_OS, (TSTR("symlink created OK\n"))); + return 0; + } else { + T(YAFFS_TRACE_OS, (TSTR("symlink not created\n"))); + } + + return -ENOMEM; +} + +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 34)) +static int yaffs_sync_object(struct file *file, int datasync) +#else +static int yaffs_sync_object(struct file *file, struct dentry *dentry, + int datasync) +#endif +{ + + yaffs_obj_t *obj; + yaffs_dev_t *dev; +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 34)) + struct dentry *dentry = file->f_path.dentry; +#endif + + obj = yaffs_dentry_to_obj(dentry); + + dev = obj->my_dev; + + T(YAFFS_TRACE_OS | YAFFS_TRACE_SYNC, + (TSTR("yaffs_sync_object\n"))); + yaffs_gross_lock(dev); + yaffs_flush_file(obj, 1, datasync); + yaffs_gross_unlock(dev); + return 0; +} + +/* + * The VFS layer already does all the dentry stuff for rename. + * + * NB: POSIX says you can rename an object over an old object of the same name + */ +static int yaffs_rename(struct inode *old_dir, struct dentry *old_dentry, + struct inode *new_dir, struct dentry *new_dentry) +{ + yaffs_dev_t *dev; + int retVal = YAFFS_FAIL; + yaffs_obj_t *target; + + T(YAFFS_TRACE_OS, (TSTR("yaffs_rename\n"))); + dev = yaffs_InodeToObject(old_dir)->my_dev; + + yaffs_gross_lock(dev); + + /* Check if the target is an existing directory that is not empty. */ + target = yaffs_find_by_name(yaffs_InodeToObject(new_dir), + new_dentry->d_name.name); + + + + if (target && target->variant_type == YAFFS_OBJECT_TYPE_DIRECTORY && + !ylist_empty(&target->variant.dir_variant.children)) { + + T(YAFFS_TRACE_OS, (TSTR("target is non-empty dir\n"))); + + retVal = YAFFS_FAIL; + } else { + /* Now does unlinking internally using shadowing mechanism */ + T(YAFFS_TRACE_OS, (TSTR("calling yaffs_rename_obj\n"))); + + retVal = yaffs_rename_obj(yaffs_InodeToObject(old_dir), + old_dentry->d_name.name, + yaffs_InodeToObject(new_dir), + new_dentry->d_name.name); + } + yaffs_gross_unlock(dev); + + if (retVal == YAFFS_OK) { + if (target) { + new_dentry->d_inode->i_nlink--; + mark_inode_dirty(new_dentry->d_inode); + } + + update_dir_time(old_dir); + if(old_dir != new_dir) + update_dir_time(new_dir); + return 0; + } else { + return -ENOTEMPTY; + } +} + +static int yaffs_setattr(struct dentry *dentry, struct iattr *attr) +{ + struct inode *inode = dentry->d_inode; + int error = 0; + yaffs_dev_t *dev; + + T(YAFFS_TRACE_OS, + (TSTR("yaffs_setattr of object %d\n"), + yaffs_InodeToObject(inode)->obj_id)); + + /* Fail if a requested resize >= 2GB */ + if (attr->ia_valid & ATTR_SIZE && + (attr->ia_size >> 31)) + error = -EINVAL; + + if (error == 0) + error = inode_change_ok(inode, attr); + if (error == 0) { + int result; + if (!error){ + error = yaffs_vfs_setattr(inode, attr); + T(YAFFS_TRACE_OS,(TSTR("inode_setattr called\n"))); + if (attr->ia_valid & ATTR_SIZE){ + yaffs_vfs_setsize(inode,attr->ia_size); + inode->i_blocks = (inode->i_size + 511) >> 9; + } + } + dev = yaffs_InodeToObject(inode)->my_dev; + if (attr->ia_valid & ATTR_SIZE){ + T(YAFFS_TRACE_OS,(TSTR("resize to %d(%x)\n"), + (int)(attr->ia_size),(int)(attr->ia_size))); + } + yaffs_gross_lock(dev); + result = yaffs_set_attribs(yaffs_InodeToObject(inode), attr); + if(result == YAFFS_OK) { + error = 0; + } else { + error = -EPERM; + } + yaffs_gross_unlock(dev); + + } + + T(YAFFS_TRACE_OS, + (TSTR("yaffs_setattr done returning %d\n"),error)); + + return error; +} + +#ifdef CONFIG_YAFFS_XATTR +int yaffs_setxattr(struct dentry *dentry, const char *name, + const void *value, size_t size, int flags) +{ + struct inode *inode = dentry->d_inode; + int error = 0; + yaffs_dev_t *dev; + yaffs_obj_t *obj = yaffs_InodeToObject(inode); + + T(YAFFS_TRACE_OS, + (TSTR("yaffs_setxattr of object %d\n"), + obj->obj_id)); + + + if (error == 0) { + int result; + dev = obj->my_dev; + yaffs_gross_lock(dev); + result = yaffs_set_xattrib(obj, name, value, size, flags); + if(result == YAFFS_OK) + error = 0; + else if(result < 0) + error = result; + yaffs_gross_unlock(dev); + + } + T(YAFFS_TRACE_OS, + (TSTR("yaffs_setxattr done returning %d\n"),error)); + + return error; +} + + +ssize_t yaffs_getxattr(struct dentry *dentry, const char *name, void *buff, + size_t size) +{ + struct inode *inode = dentry->d_inode; + int error = 0; + yaffs_dev_t *dev; + yaffs_obj_t *obj = yaffs_InodeToObject(inode); + + T(YAFFS_TRACE_OS, + (TSTR("yaffs_getxattr \"%s\" from object %d\n"), + name, obj->obj_id)); + + if (error == 0) { + dev = obj->my_dev; + yaffs_gross_lock(dev); + error = yaffs_get_xattrib(obj, name, buff, size); + yaffs_gross_unlock(dev); + + } + T(YAFFS_TRACE_OS, + (TSTR("yaffs_getxattr done returning %d\n"),error)); + + return error; +} + +int yaffs_removexattr(struct dentry *dentry, const char *name) +{ + struct inode *inode = dentry->d_inode; + int error = 0; + yaffs_dev_t *dev; + yaffs_obj_t *obj = yaffs_InodeToObject(inode); + + T(YAFFS_TRACE_OS, + (TSTR("yaffs_removexattr of object %d\n"), + obj->obj_id)); + + + if (error == 0) { + int result; + dev = obj->my_dev; + yaffs_gross_lock(dev); + result = yaffs_remove_xattrib(obj, name); + if(result == YAFFS_OK) + error = 0; + else if(result < 0) + error = result; + yaffs_gross_unlock(dev); + + } + T(YAFFS_TRACE_OS, + (TSTR("yaffs_removexattr done returning %d\n"),error)); + + return error; +} + +ssize_t yaffs_listxattr(struct dentry *dentry, char *buff, size_t size) +{ + struct inode *inode = dentry->d_inode; + int error = 0; + yaffs_dev_t *dev; + yaffs_obj_t *obj = yaffs_InodeToObject(inode); + + T(YAFFS_TRACE_OS, + (TSTR("yaffs_listxattr of object %d\n"), + obj->obj_id)); + + + if (error == 0) { + dev = obj->my_dev; + yaffs_gross_lock(dev); + error = yaffs_list_xattrib(obj, buff, size); + yaffs_gross_unlock(dev); + + } + T(YAFFS_TRACE_OS, + (TSTR("yaffs_listxattr done returning %d\n"),error)); + + return error; +} + +#endif + + +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) +static int yaffs_statfs(struct dentry *dentry, struct kstatfs *buf) +{ + yaffs_dev_t *dev = yaffs_dentry_to_obj(dentry)->my_dev; + struct super_block *sb = dentry->d_sb; +#elif (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) +static int yaffs_statfs(struct super_block *sb, struct kstatfs *buf) +{ + yaffs_dev_t *dev = yaffs_SuperToDevice(sb); +#else +static int yaffs_statfs(struct super_block *sb, struct statfs *buf) +{ + yaffs_dev_t *dev = yaffs_SuperToDevice(sb); +#endif + + T(YAFFS_TRACE_OS, (TSTR("yaffs_statfs\n"))); + + yaffs_gross_lock(dev); + + buf->f_type = YAFFS_MAGIC; + buf->f_bsize = sb->s_blocksize; + buf->f_namelen = 255; + + if (dev->data_bytes_per_chunk & (dev->data_bytes_per_chunk - 1)) { + /* Do this if chunk size is not a power of 2 */ + + uint64_t bytesInDev; + uint64_t bytesFree; + + bytesInDev = ((uint64_t)((dev->param.end_block - dev->param.start_block + 1))) * + ((uint64_t)(dev->param.chunks_per_block * dev->data_bytes_per_chunk)); + + do_div(bytesInDev, sb->s_blocksize); /* bytesInDev becomes the number of blocks */ + buf->f_blocks = bytesInDev; + + bytesFree = ((uint64_t)(yaffs_get_n_free_chunks(dev))) * + ((uint64_t)(dev->data_bytes_per_chunk)); + + do_div(bytesFree, sb->s_blocksize); + + buf->f_bfree = bytesFree; + + } else if (sb->s_blocksize > dev->data_bytes_per_chunk) { + + buf->f_blocks = + (dev->param.end_block - dev->param.start_block + 1) * + dev->param.chunks_per_block / + (sb->s_blocksize / dev->data_bytes_per_chunk); + buf->f_bfree = + yaffs_get_n_free_chunks(dev) / + (sb->s_blocksize / dev->data_bytes_per_chunk); + } else { + buf->f_blocks = + (dev->param.end_block - dev->param.start_block + 1) * + dev->param.chunks_per_block * + (dev->data_bytes_per_chunk / sb->s_blocksize); + + buf->f_bfree = + yaffs_get_n_free_chunks(dev) * + (dev->data_bytes_per_chunk / sb->s_blocksize); + } + + buf->f_files = 0; + buf->f_ffree = 0; + buf->f_bavail = buf->f_bfree; + + yaffs_gross_unlock(dev); + return 0; +} + + + +static void yaffs_flush_inodes(struct super_block *sb) +{ + struct inode *iptr; + yaffs_obj_t *obj; + + list_for_each_entry(iptr,&sb->s_inodes, i_sb_list){ + obj = yaffs_InodeToObject(iptr); + if(obj){ + T(YAFFS_TRACE_OS, (TSTR("flushing obj %d\n"), + obj->obj_id)); + yaffs_flush_file(obj,1,0); + } + } +} + + +static void yaffs_flush_super(struct super_block *sb, int do_checkpoint) +{ + yaffs_dev_t *dev = yaffs_SuperToDevice(sb); + if(!dev) + return; + + yaffs_flush_inodes(sb); + yaffs_update_dirty_dirs(dev); + yaffs_flush_whole_cache(dev); + if(do_checkpoint) + yaffs_checkpoint_save(dev); +} + + +static unsigned yaffs_bg_gc_urgency(yaffs_dev_t *dev) +{ + unsigned erasedChunks = dev->n_erased_blocks * dev->param.chunks_per_block; + struct yaffs_LinuxContext *context = yaffs_dev_to_lc(dev); + unsigned scatteredFree = 0; /* Free chunks not in an erased block */ + + if(erasedChunks < dev->n_free_chunks) + scatteredFree = (dev->n_free_chunks - erasedChunks); + + if(!context->bgRunning) + return 0; + else if(scatteredFree < (dev->param.chunks_per_block * 2)) + return 0; + else if(erasedChunks > dev->n_free_chunks/2) + return 0; + else if(erasedChunks > dev->n_free_chunks/4) + return 1; + else + return 2; +} + +static int yaffs_do_sync_fs(struct super_block *sb, + int request_checkpoint) +{ + + yaffs_dev_t *dev = yaffs_SuperToDevice(sb); + unsigned int oneshot_checkpoint = (yaffs_auto_checkpoint & 4); + unsigned gc_urgent = yaffs_bg_gc_urgency(dev); + int do_checkpoint; + + T(YAFFS_TRACE_OS | YAFFS_TRACE_SYNC | YAFFS_TRACE_BACKGROUND, + (TSTR("yaffs_do_sync_fs: gc-urgency %d %s %s%s\n"), + gc_urgent, + sb->s_dirt ? "dirty" : "clean", + request_checkpoint ? "checkpoint requested" : "no checkpoint", + oneshot_checkpoint ? " one-shot" : "" )); + + yaffs_gross_lock(dev); + do_checkpoint = ((request_checkpoint && !gc_urgent) || + oneshot_checkpoint) && + !dev->is_checkpointed; + + if (sb->s_dirt || do_checkpoint) { + yaffs_flush_super(sb, !dev->is_checkpointed && do_checkpoint); + sb->s_dirt = 0; + if(oneshot_checkpoint) + yaffs_auto_checkpoint &= ~4; + } + yaffs_gross_unlock(dev); + + return 0; +} + +/* + * yaffs background thread functions . + * yaffs_bg_thread_fn() the thread function + * yaffs_bg_start() launches the background thread. + * yaffs_bg_stop() cleans up the background thread. + * + * NB: + * The thread should only run after the yaffs is initialised + * The thread should be stopped before yaffs is unmounted. + * The thread should not do any writing while the fs is in read only. + */ + +#ifdef YAFFS_COMPILE_BACKGROUND + +void yaffs_background_waker(unsigned long data) +{ + wake_up_process((struct task_struct *)data); +} + +static int yaffs_bg_thread_fn(void *data) +{ + yaffs_dev_t *dev = (yaffs_dev_t *)data; + struct yaffs_LinuxContext *context = yaffs_dev_to_lc(dev); + unsigned long now = jiffies; + unsigned long next_dir_update = now; + unsigned long next_gc = now; + unsigned long expires; + unsigned int urgency; + + int gcResult; + struct timer_list timer; + + T(YAFFS_TRACE_BACKGROUND, + (TSTR("yaffs_background starting for dev %p\n"), + (void *)dev)); + +#ifdef YAFFS_COMPILE_FREEZER + set_freezable(); +#endif + while(context->bgRunning){ + T(YAFFS_TRACE_BACKGROUND, + (TSTR("yaffs_background\n"))); + + if(kthread_should_stop()) + break; + +#ifdef YAFFS_COMPILE_FREEZER + if(try_to_freeze()) + continue; +#endif + yaffs_gross_lock(dev); + + now = jiffies; + + if(time_after(now, next_dir_update) && yaffs_bg_enable){ + yaffs_update_dirty_dirs(dev); + next_dir_update = now + HZ; + } + + if(time_after(now,next_gc) && yaffs_bg_enable){ + if(!dev->is_checkpointed){ + urgency = yaffs_bg_gc_urgency(dev); + gcResult = yaffs_bg_gc(dev, urgency); + if(urgency > 1) + next_gc = now + HZ/20+1; + else if(urgency > 0) + next_gc = now + HZ/10+1; + else + next_gc = now + HZ * 2; + } else /* + * gc not running so set to next_dir_update + * to cut down on wake ups + */ + next_gc = next_dir_update; + } + yaffs_gross_unlock(dev); +#if 1 + expires = next_dir_update; + if (time_before(next_gc,expires)) + expires = next_gc; + if(time_before(expires,now)) + expires = now + HZ; + + Y_INIT_TIMER(&timer); + timer.expires = expires+1; + timer.data = (unsigned long) current; + timer.function = yaffs_background_waker; + + set_current_state(TASK_INTERRUPTIBLE); + add_timer(&timer); + schedule(); + del_timer_sync(&timer); +#else + msleep(10); +#endif + } + + return 0; +} + +static int yaffs_bg_start(yaffs_dev_t *dev) +{ + int retval = 0; + struct yaffs_LinuxContext *context = yaffs_dev_to_lc(dev); + + if(dev->read_only) + return -1; + + context->bgRunning = 1; + + context->bgThread = kthread_run(yaffs_bg_thread_fn, + (void *)dev,"yaffs-bg-%d",context->mount_id); + + if(IS_ERR(context->bgThread)){ + retval = PTR_ERR(context->bgThread); + context->bgThread = NULL; + context->bgRunning = 0; + } + return retval; +} + +static void yaffs_bg_stop(yaffs_dev_t *dev) +{ + struct yaffs_LinuxContext *ctxt = yaffs_dev_to_lc(dev); + + ctxt->bgRunning = 0; + + if( ctxt->bgThread){ + kthread_stop(ctxt->bgThread); + ctxt->bgThread = NULL; + } +} +#else +static int yaffs_bg_thread_fn(void *data) +{ + return 0; +} + +static int yaffs_bg_start(yaffs_dev_t *dev) +{ + return 0; +} + +static void yaffs_bg_stop(yaffs_dev_t *dev) +{ +} +#endif + + +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) +static void yaffs_write_super(struct super_block *sb) +#else +static int yaffs_write_super(struct super_block *sb) +#endif +{ + unsigned request_checkpoint = (yaffs_auto_checkpoint >= 2); + + T(YAFFS_TRACE_OS | YAFFS_TRACE_SYNC | YAFFS_TRACE_BACKGROUND, + (TSTR("yaffs_write_super%s\n"), + request_checkpoint ? " checkpt" : "")); + + yaffs_do_sync_fs(sb, request_checkpoint); + +#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 18)) + return 0; +#endif +} + + +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) +static int yaffs_sync_fs(struct super_block *sb, int wait) +#else +static int yaffs_sync_fs(struct super_block *sb) +#endif +{ + unsigned request_checkpoint = (yaffs_auto_checkpoint >= 1); + + T(YAFFS_TRACE_OS | YAFFS_TRACE_SYNC, + (TSTR("yaffs_sync_fs%s\n"), + request_checkpoint ? " checkpt" : "")); + + yaffs_do_sync_fs(sb, request_checkpoint); + + return 0; +} + +#ifdef YAFFS_USE_OWN_IGET + +static struct inode *yaffs_iget(struct super_block *sb, unsigned long ino) +{ + struct inode *inode; + yaffs_obj_t *obj; + yaffs_dev_t *dev = yaffs_SuperToDevice(sb); + + T(YAFFS_TRACE_OS, + (TSTR("yaffs_iget for %lu\n"), ino)); + + inode = iget_locked(sb, ino); + if (!inode) + return ERR_PTR(-ENOMEM); + if (!(inode->i_state & I_NEW)) + return inode; + + /* NB This is called as a side effect of other functions, but + * we had to release the lock to prevent deadlocks, so + * need to lock again. + */ + + yaffs_gross_lock(dev); + + obj = yaffs_find_by_number(dev, inode->i_ino); + + yaffs_fill_inode_from_obj(inode, obj); + + yaffs_gross_unlock(dev); + + unlock_new_inode(inode); + return inode; +} + +#else + +static void yaffs_read_inode(struct inode *inode) +{ + /* NB This is called as a side effect of other functions, but + * we had to release the lock to prevent deadlocks, so + * need to lock again. + */ + + yaffs_obj_t *obj; + yaffs_dev_t *dev = yaffs_SuperToDevice(inode->i_sb); + + T(YAFFS_TRACE_OS, + (TSTR("yaffs_read_inode for %d\n"), (int)inode->i_ino)); + + if(current != yaffs_dev_to_lc(dev)->readdirProcess) + yaffs_gross_lock(dev); + + obj = yaffs_find_by_number(dev, inode->i_ino); + + yaffs_fill_inode_from_obj(inode, obj); + + if(current != yaffs_dev_to_lc(dev)->readdirProcess) + yaffs_gross_unlock(dev); +} + +#endif + +static YLIST_HEAD(yaffs_context_list); +struct semaphore yaffs_context_lock; + +static void yaffs_put_super(struct super_block *sb) +{ + yaffs_dev_t *dev = yaffs_SuperToDevice(sb); + + T(YAFFS_TRACE_OS, (TSTR("yaffs_put_super\n"))); + + T(YAFFS_TRACE_OS | YAFFS_TRACE_BACKGROUND, + (TSTR("Shutting down yaffs background thread\n"))); + yaffs_bg_stop(dev); + T(YAFFS_TRACE_OS | YAFFS_TRACE_BACKGROUND, + (TSTR("yaffs background thread shut down\n"))); + + yaffs_gross_lock(dev); + + yaffs_flush_super(sb,1); + + if (yaffs_dev_to_lc(dev)->putSuperFunc) + yaffs_dev_to_lc(dev)->putSuperFunc(sb); + + + yaffs_deinitialise(dev); + + yaffs_gross_unlock(dev); + + down(&yaffs_context_lock); + ylist_del_init(&(yaffs_dev_to_lc(dev)->contextList)); + up(&yaffs_context_lock); + + if (yaffs_dev_to_lc(dev)->spareBuffer) { + YFREE(yaffs_dev_to_lc(dev)->spareBuffer); + yaffs_dev_to_lc(dev)->spareBuffer = NULL; + } + + kfree(dev); +} + + +static void yaffs_MTDPutSuper(struct super_block *sb) +{ + struct mtd_info *mtd = yaffs_dev_to_mtd(yaffs_SuperToDevice(sb)); + + if (mtd->sync) + mtd->sync(mtd); + + put_mtd_device(mtd); +} + + +static void yaffs_touch_super(yaffs_dev_t *dev) +{ + struct super_block *sb = yaffs_dev_to_lc(dev)->superBlock; + + T(YAFFS_TRACE_OS, (TSTR("yaffs_touch_super() sb = %p\n"), sb)); + if (sb) + sb->s_dirt = 1; +} + +typedef struct { + int inband_tags; + int skip_checkpoint_read; + int skip_checkpoint_write; + int no_cache; + int tags_ecc_on; + int tags_ecc_overridden; + int lazy_loading_enabled; + int lazy_loading_overridden; + int empty_lost_and_found; + int empty_lost_and_found_overridden; +} yaffs_options; + +#define MAX_OPT_LEN 30 +static int yaffs_parse_options(yaffs_options *options, const char *options_str) +{ + char cur_opt[MAX_OPT_LEN + 1]; + int p; + int error = 0; + + /* Parse through the options which is a comma seperated list */ + + while (options_str && *options_str && !error) { + memset(cur_opt, 0, MAX_OPT_LEN + 1); + p = 0; + + while(*options_str == ',') + options_str++; + + while (*options_str && *options_str != ',') { + if (p < MAX_OPT_LEN) { + cur_opt[p] = *options_str; + p++; + } + options_str++; + } + + if (!strcmp(cur_opt, "inband-tags")) + options->inband_tags = 1; + else if (!strcmp(cur_opt, "tags-ecc-off")){ + options->tags_ecc_on = 0; + options->tags_ecc_overridden=1; + } else if (!strcmp(cur_opt, "tags-ecc-on")){ + options->tags_ecc_on = 1; + options->tags_ecc_overridden = 1; + } else if (!strcmp(cur_opt, "lazy-loading-off")){ + options->lazy_loading_enabled = 0; + options->lazy_loading_overridden=1; + } else if (!strcmp(cur_opt, "lazy-loading-on")){ + options->lazy_loading_enabled = 1; + options->lazy_loading_overridden = 1; + } else if (!strcmp(cur_opt, "empty-lost-and-found-off")){ + options->empty_lost_and_found = 0; + options->empty_lost_and_found_overridden=1; + } else if (!strcmp(cur_opt, "empty-lost-and-found-on")){ + options->empty_lost_and_found = 1; + options->empty_lost_and_found_overridden=1; + } else if (!strcmp(cur_opt, "no-cache")) + options->no_cache = 1; + else if (!strcmp(cur_opt, "no-checkpoint-read")) + options->skip_checkpoint_read = 1; + else if (!strcmp(cur_opt, "no-checkpoint-write")) + options->skip_checkpoint_write = 1; + else if (!strcmp(cur_opt, "no-checkpoint")) { + options->skip_checkpoint_read = 1; + options->skip_checkpoint_write = 1; + } else { + printk(KERN_INFO "yaffs: Bad mount option \"%s\"\n", + cur_opt); + error = 1; + } + } + + return error; +} + +static struct super_block *yaffs_internal_read_super(int yaffs_version, + struct super_block *sb, + void *data, int silent) +{ + int nBlocks; + struct inode *inode = NULL; + struct dentry *root; + yaffs_dev_t *dev = 0; + char devname_buf[BDEVNAME_SIZE + 1]; + struct mtd_info *mtd; + int err; + char *data_str = (char *)data; + struct yaffs_LinuxContext *context = NULL; + yaffs_param_t *param; + + int read_only = 0; + + yaffs_options options; + + unsigned mount_id; + int found; + struct yaffs_LinuxContext *context_iterator; + struct ylist_head *l; + + sb->s_magic = YAFFS_MAGIC; + sb->s_op = &yaffs_super_ops; + sb->s_flags |= MS_NOATIME; + + read_only =((sb->s_flags & MS_RDONLY) != 0); + + +#ifdef YAFFS_COMPILE_EXPORTFS + sb->s_export_op = &yaffs_export_ops; +#endif + + if (!sb) + printk(KERN_INFO "yaffs: sb is NULL\n"); + else if (!sb->s_dev) + printk(KERN_INFO "yaffs: sb->s_dev is NULL\n"); + else if (!yaffs_devname(sb, devname_buf)) + printk(KERN_INFO "yaffs: devname is NULL\n"); + else + printk(KERN_INFO "yaffs: dev is %d name is \"%s\" %s\n", + sb->s_dev, + yaffs_devname(sb, devname_buf), + read_only ? "ro" : "rw"); + + if (!data_str) + data_str = ""; + + printk(KERN_INFO "yaffs: passed flags \"%s\"\n", data_str); + + memset(&options, 0, sizeof(options)); + + if (yaffs_parse_options(&options, data_str)) { + /* Option parsing failed */ + return NULL; + } + + + sb->s_blocksize = PAGE_CACHE_SIZE; + sb->s_blocksize_bits = PAGE_CACHE_SHIFT; + + T(YAFFS_TRACE_OS, + (TSTR("yaffs_read_super: Using yaffs%d\n"), yaffs_version)); + T(YAFFS_TRACE_OS, + (TSTR("yaffs_read_super: block size %d\n"), + (int)(sb->s_blocksize))); + + T(YAFFS_TRACE_ALWAYS, + (TSTR("yaffs: Attempting MTD mount of %u.%u,\"%s\"\n"), + MAJOR(sb->s_dev), MINOR(sb->s_dev), + yaffs_devname(sb, devname_buf))); + + /* Check it's an mtd device..... */ + if (MAJOR(sb->s_dev) != MTD_BLOCK_MAJOR) + return NULL; /* This isn't an mtd device */ + + /* Get the device */ + mtd = get_mtd_device(NULL, MINOR(sb->s_dev)); + if (!mtd) { + T(YAFFS_TRACE_ALWAYS, + (TSTR("yaffs: MTD device #%u doesn't appear to exist\n"), + MINOR(sb->s_dev))); + return NULL; + } + /* Check it's NAND */ + if (mtd->type != MTD_NANDFLASH) { + T(YAFFS_TRACE_ALWAYS, + (TSTR("yaffs: MTD device is not NAND it's type %d\n"), + mtd->type)); + return NULL; + } + + T(YAFFS_TRACE_OS, (TSTR(" erase %p\n"), mtd->erase)); + T(YAFFS_TRACE_OS, (TSTR(" read %p\n"), mtd->read)); + T(YAFFS_TRACE_OS, (TSTR(" write %p\n"), mtd->write)); + T(YAFFS_TRACE_OS, (TSTR(" readoob %p\n"), mtd->read_oob)); + T(YAFFS_TRACE_OS, (TSTR(" writeoob %p\n"), mtd->write_oob)); + T(YAFFS_TRACE_OS, (TSTR(" block_isbad %p\n"), mtd->block_isbad)); + T(YAFFS_TRACE_OS, (TSTR(" block_markbad %p\n"), mtd->block_markbad)); + T(YAFFS_TRACE_OS, (TSTR(" %s %d\n"), WRITE_SIZE_STR, WRITE_SIZE(mtd))); + T(YAFFS_TRACE_OS, (TSTR(" oobsize %d\n"), mtd->oobsize)); + T(YAFFS_TRACE_OS, (TSTR(" erasesize %d\n"), mtd->erasesize)); +#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 29) + T(YAFFS_TRACE_OS, (TSTR(" size %u\n"), mtd->size)); +#else + T(YAFFS_TRACE_OS, (TSTR(" size %lld\n"), mtd->size)); +#endif + +#ifdef CONFIG_YAFFS_AUTO_YAFFS2 + + if (yaffs_version == 1 && WRITE_SIZE(mtd) >= 2048) { + T(YAFFS_TRACE_ALWAYS, + (TSTR("yaffs: auto selecting yaffs2\n"))); + yaffs_version = 2; + } + + /* Added NCB 26/5/2006 for completeness */ + if (yaffs_version == 2 && !options.inband_tags && WRITE_SIZE(mtd) == 512) { + T(YAFFS_TRACE_ALWAYS, + (TSTR("yaffs: auto selecting yaffs1\n"))); + yaffs_version = 1; + } + +#endif + + if (yaffs_version == 2) { + /* Check for version 2 style functions */ + if (!mtd->erase || + !mtd->block_isbad || + !mtd->block_markbad || + !mtd->read || + !mtd->write || +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) + !mtd->read_oob || !mtd->write_oob) { +#else + !mtd->write_ecc || + !mtd->read_ecc || !mtd->read_oob || !mtd->write_oob) { +#endif + T(YAFFS_TRACE_ALWAYS, + (TSTR("yaffs: MTD device does not support required " + "functions\n"))); + return NULL; + } + + if ((WRITE_SIZE(mtd) < YAFFS_MIN_YAFFS2_CHUNK_SIZE || + mtd->oobsize < YAFFS_MIN_YAFFS2_SPARE_SIZE) && + !options.inband_tags) { + T(YAFFS_TRACE_ALWAYS, + (TSTR("yaffs: MTD device does not have the " + "right page sizes\n"))); + return NULL; + } + } else { + /* Check for V1 style functions */ + if (!mtd->erase || + !mtd->read || + !mtd->write || +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) + !mtd->read_oob || !mtd->write_oob) { +#else + !mtd->write_ecc || + !mtd->read_ecc || !mtd->read_oob || !mtd->write_oob) { +#endif + T(YAFFS_TRACE_ALWAYS, + (TSTR("yaffs: MTD device does not support required " + "functions\n"))); + return NULL; + } + + if (WRITE_SIZE(mtd) < YAFFS_BYTES_PER_CHUNK || + mtd->oobsize != YAFFS_BYTES_PER_SPARE) { + T(YAFFS_TRACE_ALWAYS, + (TSTR("yaffs: MTD device does not support have the " + "right page sizes\n"))); + return NULL; + } + } + + /* OK, so if we got here, we have an MTD that's NAND and looks + * like it has the right capabilities + * Set the yaffs_dev_t up for mtd + */ + + if (!read_only && !(mtd->flags & MTD_WRITEABLE)){ + read_only = 1; + printk(KERN_INFO "yaffs: mtd is read only, setting superblock read only"); + sb->s_flags |= MS_RDONLY; + } + + dev = kmalloc(sizeof(yaffs_dev_t), GFP_KERNEL); + context = kmalloc(sizeof(struct yaffs_LinuxContext),GFP_KERNEL); + + if(!dev || !context ){ + if(dev) + kfree(dev); + if(context) + kfree(context); + dev = NULL; + context = NULL; + } + + if (!dev) { + /* Deep shit could not allocate device structure */ + T(YAFFS_TRACE_ALWAYS, + (TSTR("yaffs_read_super: Failed trying to allocate " + "yaffs_dev_t. \n"))); + return NULL; + } + memset(dev, 0, sizeof(yaffs_dev_t)); + param = &(dev->param); + + memset(context,0,sizeof(struct yaffs_LinuxContext)); + dev->os_context = context; + YINIT_LIST_HEAD(&(context->contextList)); + context->dev = dev; + context->superBlock = sb; + + dev->read_only = read_only; + +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) + sb->s_fs_info = dev; +#else + sb->u.generic_sbp = dev; +#endif + + dev->driver_context = mtd; + param->name = mtd->name; + + /* Set up the memory size parameters.... */ + + nBlocks = YCALCBLOCKS(mtd->size, (YAFFS_CHUNKS_PER_BLOCK * YAFFS_BYTES_PER_CHUNK)); + + param->start_block = 0; + param->end_block = nBlocks - 1; + param->chunks_per_block = YAFFS_CHUNKS_PER_BLOCK; + param->total_bytes_per_chunk = YAFFS_BYTES_PER_CHUNK; + param->n_reserved_blocks = 5; + param->n_caches = (options.no_cache) ? 0 : 10; + param->inband_tags = options.inband_tags; + +#ifdef CONFIG_YAFFS_DISABLE_LAZY_LOAD + param->disable_lazy_load = 1; +#endif +#ifdef CONFIG_YAFFS_XATTR + param->enable_xattr = 1; +#endif + if(options.lazy_loading_overridden) + param->disable_lazy_load = !options.lazy_loading_enabled; + +#ifdef CONFIG_YAFFS_DISABLE_TAGS_ECC + param->no_tags_ecc = 1; +#endif + +#ifdef CONFIG_YAFFS_DISABLE_BACKGROUND +#else + param->defered_dir_update = 1; +#endif + + if(options.tags_ecc_overridden) + param->no_tags_ecc = !options.tags_ecc_on; + +#ifdef CONFIG_YAFFS_EMPTY_LOST_AND_FOUND + param->empty_lost_n_found = 1; +#endif + +#ifdef CONFIG_YAFFS_DISABLE_BLOCK_REFRESHING + param->refresh_period = 0; +#else + param->refresh_period = 500; +#endif + +#ifdef CONFIG_YAFFS__ALWAYS_CHECK_CHUNK_ERASED + param->always_check_erased = 1; +#endif + + if(options.empty_lost_and_found_overridden) + param->empty_lost_n_found = options.empty_lost_and_found; + + /* ... and the functions. */ + if (yaffs_version == 2) { + param->write_chunk_tags_fn = + nandmtd2_WriteChunkWithTagsToNAND; + param->read_chunk_tags_fn = + nandmtd2_ReadChunkWithTagsFromNAND; + param->bad_block_fn = nandmtd2_MarkNANDBlockBad; + param->query_block_fn = nandmtd2_QueryNANDBlock; + yaffs_dev_to_lc(dev)->spareBuffer = YMALLOC(mtd->oobsize); + param->is_yaffs2 = 1; +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) + param->total_bytes_per_chunk = mtd->writesize; + param->chunks_per_block = mtd->erasesize / mtd->writesize; +#else + param->total_bytes_per_chunk = mtd->oobblock; + param->chunks_per_block = mtd->erasesize / mtd->oobblock; +#endif + nBlocks = YCALCBLOCKS(mtd->size, mtd->erasesize); + + param->start_block = 0; + param->end_block = nBlocks - 1; + } else { +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) + /* use the MTD interface in yaffs_mtdif1.c */ + param->write_chunk_tags_fn = + nandmtd1_WriteChunkWithTagsToNAND; + param->read_chunk_tags_fn = + nandmtd1_ReadChunkWithTagsFromNAND; + param->bad_block_fn = nandmtd1_MarkNANDBlockBad; + param->query_block_fn = nandmtd1_QueryNANDBlock; +#else + param->write_chunk_fn = nandmtd_WriteChunkToNAND; + param->read_chunk_fn = nandmtd_ReadChunkFromNAND; +#endif + param->is_yaffs2 = 0; + } + /* ... and common functions */ + param->erase_fn = nandmtd_EraseBlockInNAND; + param->initialise_flash_fn = nandmtd_InitialiseNAND; + + yaffs_dev_to_lc(dev)->putSuperFunc = yaffs_MTDPutSuper; + + param->sb_dirty_fn = yaffs_touch_super; + param->gc_control = yaffs_gc_control_callback; + + yaffs_dev_to_lc(dev)->superBlock= sb; + + +#ifndef CONFIG_YAFFS_DOES_ECC + param->use_nand_ecc = 1; +#endif + +#ifdef CONFIG_YAFFS_DISABLE_WIDE_TNODES + param->wide_tnodes_disabled = 1; +#endif + + param->skip_checkpt_rd = options.skip_checkpoint_read; + param->skip_checkpt_wr = options.skip_checkpoint_write; + + down(&yaffs_context_lock); + /* Get a mount id */ + found = 0; + for(mount_id=0; ! found; mount_id++){ + found = 1; + ylist_for_each(l,&yaffs_context_list){ + context_iterator = ylist_entry(l,struct yaffs_LinuxContext,contextList); + if(context_iterator->mount_id == mount_id) + found = 0; + } + } + context->mount_id = mount_id; + + ylist_add_tail(&(yaffs_dev_to_lc(dev)->contextList), &yaffs_context_list); + up(&yaffs_context_lock); + + /* Directory search handling...*/ + YINIT_LIST_HEAD(&(yaffs_dev_to_lc(dev)->searchContexts)); + param->remove_obj_fn = yaffs_remove_obj_callback; + + init_MUTEX(&(yaffs_dev_to_lc(dev)->grossLock)); + + yaffs_gross_lock(dev); + + err = yaffs_guts_initialise(dev); + + T(YAFFS_TRACE_OS, + (TSTR("yaffs_read_super: guts initialised %s\n"), + (err == YAFFS_OK) ? "OK" : "FAILED")); + + if(err == YAFFS_OK) + yaffs_bg_start(dev); + + if(!context->bgThread) + param->defered_dir_update = 0; + + + /* Release lock before yaffs_get_inode() */ + yaffs_gross_unlock(dev); + + /* Create root inode */ + if (err == YAFFS_OK) + inode = yaffs_get_inode(sb, S_IFDIR | 0755, 0, + yaffs_root(dev)); + + if (!inode) + return NULL; + + inode->i_op = &yaffs_dir_inode_operations; + inode->i_fop = &yaffs_dir_operations; + + T(YAFFS_TRACE_OS, (TSTR("yaffs_read_super: got root inode\n"))); + + root = d_alloc_root(inode); + + T(YAFFS_TRACE_OS, (TSTR("yaffs_read_super: d_alloc_root done\n"))); + + if (!root) { + iput(inode); + return NULL; + } + sb->s_root = root; + sb->s_dirt = !dev->is_checkpointed; + T(YAFFS_TRACE_ALWAYS, + (TSTR("yaffs_read_super: is_checkpointed %d\n"), + dev->is_checkpointed)); + + T(YAFFS_TRACE_OS, (TSTR("yaffs_read_super: done\n"))); + return sb; +} + + +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) +static int yaffs_internal_read_super_mtd(struct super_block *sb, void *data, + int silent) +{ + return yaffs_internal_read_super(1, sb, data, silent) ? 0 : -EINVAL; +} + +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) +static int yaffs_read_super(struct file_system_type *fs, + int flags, const char *dev_name, + void *data, struct vfsmount *mnt) +{ + + return get_sb_bdev(fs, flags, dev_name, data, + yaffs_internal_read_super_mtd, mnt); +} +#else +static struct super_block *yaffs_read_super(struct file_system_type *fs, + int flags, const char *dev_name, + void *data) +{ + + return get_sb_bdev(fs, flags, dev_name, data, + yaffs_internal_read_super_mtd); +} +#endif + +static struct file_system_type yaffs_fs_type = { + .owner = THIS_MODULE, + .name = "yaffs", + .get_sb = yaffs_read_super, + .kill_sb = kill_block_super, + .fs_flags = FS_REQUIRES_DEV, +}; +#else +static struct super_block *yaffs_read_super(struct super_block *sb, void *data, + int silent) +{ + return yaffs_internal_read_super(1, sb, data, silent); +} + +static DECLARE_FSTYPE(yaffs_fs_type, "yaffs", yaffs_read_super, + FS_REQUIRES_DEV); +#endif + + +#ifdef CONFIG_YAFFS_YAFFS2 + +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) +static int yaffs2_internal_read_super_mtd(struct super_block *sb, void *data, + int silent) +{ + return yaffs_internal_read_super(2, sb, data, silent) ? 0 : -EINVAL; +} + +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) +static int yaffs2_read_super(struct file_system_type *fs, + int flags, const char *dev_name, void *data, + struct vfsmount *mnt) +{ + return get_sb_bdev(fs, flags, dev_name, data, + yaffs2_internal_read_super_mtd, mnt); +} +#else +static struct super_block *yaffs2_read_super(struct file_system_type *fs, + int flags, const char *dev_name, + void *data) +{ + + return get_sb_bdev(fs, flags, dev_name, data, + yaffs2_internal_read_super_mtd); +} +#endif + +static struct file_system_type yaffs2_fs_type = { + .owner = THIS_MODULE, + .name = "yaffs2", + .get_sb = yaffs2_read_super, + .kill_sb = kill_block_super, + .fs_flags = FS_REQUIRES_DEV, +}; +#else +static struct super_block *yaffs2_read_super(struct super_block *sb, + void *data, int silent) +{ + return yaffs_internal_read_super(2, sb, data, silent); +} + +static DECLARE_FSTYPE(yaffs2_fs_type, "yaffs2", yaffs2_read_super, + FS_REQUIRES_DEV); +#endif + +#endif /* CONFIG_YAFFS_YAFFS2 */ + +static struct proc_dir_entry *my_proc_entry; +static struct proc_dir_entry *debug_proc_entry; + +static char *yaffs_dump_dev_part0(char *buf, yaffs_dev_t * dev) +{ + buf += sprintf(buf, "start_block.......... %d\n", dev->param.start_block); + buf += sprintf(buf, "end_block............ %d\n", dev->param.end_block); + buf += sprintf(buf, "total_bytes_per_chunk %d\n", dev->param.total_bytes_per_chunk); + buf += sprintf(buf, "use_nand_ecc......... %d\n", dev->param.use_nand_ecc); + buf += sprintf(buf, "no_tags_ecc.......... %d\n", dev->param.no_tags_ecc); + buf += sprintf(buf, "is_yaffs2............ %d\n", dev->param.is_yaffs2); + buf += sprintf(buf, "inband_tags.......... %d\n", dev->param.inband_tags); + buf += sprintf(buf, "empty_lost_n_found... %d\n", dev->param.empty_lost_n_found); + buf += sprintf(buf, "disable_lazy_load.... %d\n", dev->param.disable_lazy_load); + buf += sprintf(buf, "refresh_period....... %d\n", dev->param.refresh_period); + buf += sprintf(buf, "n_caches............. %d\n", dev->param.n_caches); + buf += sprintf(buf, "n_reserved_blocks.... %d\n", dev->param.n_reserved_blocks); + buf += sprintf(buf, "always_check_erased.. %d\n", dev->param.always_check_erased); + + buf += sprintf(buf, "\n"); + + return buf; +} + + +static char *yaffs_dump_dev_part1(char *buf, yaffs_dev_t * dev) +{ + buf += sprintf(buf, "data_bytes_per_chunk. %d\n", dev->data_bytes_per_chunk); + buf += sprintf(buf, "chunk_grp_bits....... %d\n", dev->chunk_grp_bits); + buf += sprintf(buf, "chunk_grp_size....... %d\n", dev->chunk_grp_size); + buf += sprintf(buf, "n_erased_blocks...... %d\n", dev->n_erased_blocks); + buf += sprintf(buf, "blocks_in_checkpt.... %d\n", dev->blocks_in_checkpt); + buf += sprintf(buf, "\n"); + buf += sprintf(buf, "n_tnodes............. %d\n", dev->n_tnodes); + buf += sprintf(buf, "n_obj................ %d\n", dev->n_obj); + buf += sprintf(buf, "n_free_chunks........ %d\n", dev->n_free_chunks); + buf += sprintf(buf, "\n"); + buf += sprintf(buf, "n_page_writes........ %u\n", dev->n_page_writes); + buf += sprintf(buf, "n_page_reads......... %u\n", dev->n_page_reads); + buf += sprintf(buf, "n_erasures........... %u\n", dev->n_erasures); + buf += sprintf(buf, "n_gc_copies.......... %u\n", dev->n_gc_copies); + buf += sprintf(buf, "all_gcs.............. %u\n", dev->all_gcs); + buf += sprintf(buf, "passive_gc_count..... %u\n", dev->passive_gc_count); + buf += sprintf(buf, "oldest_dirty_gc_count %u\n", dev->oldest_dirty_gc_count); + buf += sprintf(buf, "n_gc_blocks.......... %u\n", dev->n_gc_blocks); + buf += sprintf(buf, "bg_gcs............... %u\n", dev->bg_gcs); + buf += sprintf(buf, "n_retired_writes..... %u\n", dev->n_retired_writes); + buf += sprintf(buf, "nRetireBlocks........ %u\n", dev->n_retired_blocks); + buf += sprintf(buf, "n_ecc_fixed.......... %u\n", dev->n_ecc_fixed); + buf += sprintf(buf, "n_ecc_unfixed........ %u\n", dev->n_ecc_unfixed); + buf += sprintf(buf, "n_tags_ecc_fixed..... %u\n", dev->n_tags_ecc_fixed); + buf += sprintf(buf, "n_tags_ecc_unfixed... %u\n", dev->n_tags_ecc_unfixed); + buf += sprintf(buf, "cache_hits........... %u\n", dev->cache_hits); + buf += sprintf(buf, "n_deleted_files...... %u\n", dev->n_deleted_files); + buf += sprintf(buf, "n_unlinked_files..... %u\n", dev->n_unlinked_files); + buf += sprintf(buf, "refresh_count........ %u\n", dev->refresh_count); + buf += sprintf(buf, "n_bg_deletions....... %u\n", dev->n_bg_deletions); + + return buf; +} + +static int yaffs_proc_read(char *page, + char **start, + off_t offset, int count, int *eof, void *data) +{ + struct ylist_head *item; + char *buf = page; + int step = offset; + int n = 0; + + /* Get proc_file_read() to step 'offset' by one on each sucessive call. + * We use 'offset' (*ppos) to indicate where we are in dev_list. + * This also assumes the user has posted a read buffer large + * enough to hold the complete output; but that's life in /proc. + */ + + *(int *)start = 1; + + /* Print header first */ + if (step == 0) + buf += sprintf(buf, "Multi-version YAFFS built:" __DATE__ " " __TIME__"\n"); + else if (step == 1) + buf += sprintf(buf,"\n"); + else { + step-=2; + + down(&yaffs_context_lock); + + /* Locate and print the Nth entry. Order N-squared but N is small. */ + ylist_for_each(item, &yaffs_context_list) { + struct yaffs_LinuxContext *dc = ylist_entry(item, struct yaffs_LinuxContext, contextList); + yaffs_dev_t *dev = dc->dev; + + if (n < (step & ~1)) { + n+=2; + continue; + } + if((step & 1)==0){ + buf += sprintf(buf, "\nDevice %d \"%s\"\n", n, dev->param.name); + buf = yaffs_dump_dev_part0(buf, dev); + } else + buf = yaffs_dump_dev_part1(buf, dev); + + break; + } + up(&yaffs_context_lock); + } + + return buf - page < count ? buf - page : count; +} + +static int yaffs_stats_proc_read(char *page, + char **start, + off_t offset, int count, int *eof, void *data) +{ + struct ylist_head *item; + char *buf = page; + int n = 0; + + down(&yaffs_context_lock); + + /* Locate and print the Nth entry. Order N-squared but N is small. */ + ylist_for_each(item, &yaffs_context_list) { + struct yaffs_LinuxContext *dc = ylist_entry(item, struct yaffs_LinuxContext, contextList); + yaffs_dev_t *dev = dc->dev; + + int erasedChunks; + + erasedChunks = dev->n_erased_blocks * dev->param.chunks_per_block; + + buf += sprintf(buf,"%d, %d, %d, %u, %u, %u, %u\n", + n, dev->n_free_chunks, erasedChunks, + dev->bg_gcs, dev->oldest_dirty_gc_count, + dev->n_obj, dev->n_tnodes); + } + up(&yaffs_context_lock); + + + return buf - page < count ? buf - page : count; +} + +/** + * Set the verbosity of the warnings and error messages. + * + * Note that the names can only be a..z or _ with the current code. + */ + +static struct { + char *mask_name; + unsigned mask_bitfield; +} mask_flags[] = { + {"allocate", YAFFS_TRACE_ALLOCATE}, + {"always", YAFFS_TRACE_ALWAYS}, + {"background", YAFFS_TRACE_BACKGROUND}, + {"bad_blocks", YAFFS_TRACE_BAD_BLOCKS}, + {"buffers", YAFFS_TRACE_BUFFERS}, + {"bug", YAFFS_TRACE_BUG}, + {"checkpt", YAFFS_TRACE_CHECKPOINT}, + {"deletion", YAFFS_TRACE_DELETION}, + {"erase", YAFFS_TRACE_ERASE}, + {"error", YAFFS_TRACE_ERROR}, + {"gc_detail", YAFFS_TRACE_GC_DETAIL}, + {"gc", YAFFS_TRACE_GC}, + {"lock", YAFFS_TRACE_LOCK}, + {"mtd", YAFFS_TRACE_MTD}, + {"nandaccess", YAFFS_TRACE_NANDACCESS}, + {"os", YAFFS_TRACE_OS}, + {"scan_debug", YAFFS_TRACE_SCAN_DEBUG}, + {"scan", YAFFS_TRACE_SCAN}, + {"tracing", YAFFS_TRACE_TRACING}, + {"sync", YAFFS_TRACE_SYNC}, + {"write", YAFFS_TRACE_WRITE}, + + {"verify", YAFFS_TRACE_VERIFY}, + {"verify_nand", YAFFS_TRACE_VERIFY_NAND}, + {"verify_full", YAFFS_TRACE_VERIFY_FULL}, + {"verify_all", YAFFS_TRACE_VERIFY_ALL}, + + {"all", 0xffffffff}, + {"none", 0}, + {NULL, 0}, +}; + +#define MAX_MASK_NAME_LENGTH 40 +static int yaffs_proc_write_trace_options(struct file *file, const char *buf, + unsigned long count, void *data) +{ + unsigned rg = 0, mask_bitfield; + char *end; + char *mask_name; + const char *x; + char substring[MAX_MASK_NAME_LENGTH + 1]; + int i; + int done = 0; + int add, len = 0; + int pos = 0; + + rg = yaffs_trace_mask; + + while (!done && (pos < count)) { + done = 1; + while ((pos < count) && isspace(buf[pos])) + pos++; + + switch (buf[pos]) { + case '+': + case '-': + case '=': + add = buf[pos]; + pos++; + break; + + default: + add = ' '; + break; + } + mask_name = NULL; + + mask_bitfield = simple_strtoul(buf + pos, &end, 0); + + if (end > buf + pos) { + mask_name = "numeral"; + len = end - (buf + pos); + pos += len; + done = 0; + } else { + for (x = buf + pos, i = 0; + (*x == '_' || (*x >= 'a' && *x <= 'z')) && + i < MAX_MASK_NAME_LENGTH; x++, i++, pos++) + substring[i] = *x; + substring[i] = '\0'; + + for (i = 0; mask_flags[i].mask_name != NULL; i++) { + if (strcmp(substring, mask_flags[i].mask_name) == 0) { + mask_name = mask_flags[i].mask_name; + mask_bitfield = mask_flags[i].mask_bitfield; + done = 0; + break; + } + } + } + + if (mask_name != NULL) { + done = 0; + switch (add) { + case '-': + rg &= ~mask_bitfield; + break; + case '+': + rg |= mask_bitfield; + break; + case '=': + rg = mask_bitfield; + break; + default: + rg |= mask_bitfield; + break; + } + } + } + + yaffs_trace_mask = rg | YAFFS_TRACE_ALWAYS; + + printk(KERN_DEBUG "new trace = 0x%08X\n", yaffs_trace_mask); + + if (rg & YAFFS_TRACE_ALWAYS) { + for (i = 0; mask_flags[i].mask_name != NULL; i++) { + char flag; + flag = ((rg & mask_flags[i].mask_bitfield) == + mask_flags[i].mask_bitfield) ? '+' : '-'; + printk(KERN_DEBUG "%c%s\n", flag, mask_flags[i].mask_name); + } + } + + return count; +} + + +static int yaffs_proc_write(struct file *file, const char *buf, + unsigned long count, void *data) +{ + return yaffs_proc_write_trace_options(file, buf, count, data); +} + +/* Stuff to handle installation of file systems */ +struct file_system_to_install { + struct file_system_type *fst; + int installed; +}; + +static struct file_system_to_install fs_to_install[] = { + {&yaffs_fs_type, 0}, + {&yaffs2_fs_type, 0}, + {NULL, 0} +}; + +static int __init init_yaffs_fs(void) +{ + int error = 0; + struct file_system_to_install *fsinst; + + T(YAFFS_TRACE_ALWAYS, + (TSTR("yaffs built " __DATE__ " " __TIME__ " Installing. \n"))); + +#ifdef CONFIG_YAFFS_ALWAYS_CHECK_CHUNK_ERASED + T(YAFFS_TRACE_ALWAYS, + (TSTR(" \n\n\n\nYAFFS-WARNING CONFIG_YAFFS_ALWAYS_CHECK_CHUNK_ERASED selected.\n\n\n\n"))); +#endif + + + + + init_MUTEX(&yaffs_context_lock); + + /* Install the proc_fs entries */ + my_proc_entry = create_proc_entry("yaffs", + S_IRUGO | S_IFREG, + YPROC_ROOT); + + if (my_proc_entry) { + my_proc_entry->write_proc = yaffs_proc_write; + my_proc_entry->read_proc = yaffs_proc_read; + my_proc_entry->data = NULL; + } else + return -ENOMEM; + + debug_proc_entry = create_proc_entry("yaffs_stats", + S_IRUGO | S_IFREG, + YPROC_ROOT); + + if (debug_proc_entry) { + debug_proc_entry->write_proc = NULL; + debug_proc_entry->read_proc = yaffs_stats_proc_read; + debug_proc_entry->data = NULL; + } else + return -ENOMEM; + + /* Now add the file system entries */ + + fsinst = fs_to_install; + + while (fsinst->fst && !error) { + error = register_filesystem(fsinst->fst); + if (!error) + fsinst->installed = 1; + fsinst++; + } + + /* Any errors? uninstall */ + if (error) { + fsinst = fs_to_install; + + while (fsinst->fst) { + if (fsinst->installed) { + unregister_filesystem(fsinst->fst); + fsinst->installed = 0; + } + fsinst++; + } + } + + return error; +} + +static void __exit exit_yaffs_fs(void) +{ + + struct file_system_to_install *fsinst; + + T(YAFFS_TRACE_ALWAYS, + (TSTR("yaffs built " __DATE__ " " __TIME__ " removing. \n"))); + + remove_proc_entry("yaffs", YPROC_ROOT); + remove_proc_entry("yaffs_stats", YPROC_ROOT); + + fsinst = fs_to_install; + + while (fsinst->fst) { + if (fsinst->installed) { + unregister_filesystem(fsinst->fst); + fsinst->installed = 0; + } + fsinst++; + } +} + +module_init(init_yaffs_fs) +module_exit(exit_yaffs_fs) + +MODULE_DESCRIPTION("YAFFS2 - a NAND specific flash file system"); +MODULE_AUTHOR("Charles Manning, Aleph One Ltd., 2002-2010"); +MODULE_LICENSE("GPL"); diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_yaffs1.c b/target/linux/generic/files/fs/yaffs2/yaffs_yaffs1.c new file mode 100644 index 0000000000..cc717461c6 --- /dev/null +++ b/target/linux/generic/files/fs/yaffs2/yaffs_yaffs1.c @@ -0,0 +1,465 @@ +/* + * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. + * + * Copyright (C) 2002-2010 Aleph One Ltd. + * for Toby Churchill Ltd and Brightstar Engineering + * + * Created by Charles Manning <charles@aleph1.co.uk> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ +#include "yaffs_yaffs1.h" +#include "yportenv.h" +#include "yaffs_trace.h" +#include "yaffs_bitmap.h" +#include "yaffs_getblockinfo.h" +#include "yaffs_nand.h" + + +int yaffs1_scan(yaffs_dev_t *dev) +{ + yaffs_ext_tags tags; + int blk; + int blockIterator; + int startIterator; + int endIterator; + int result; + + int chunk; + int c; + int deleted; + yaffs_block_state_t state; + yaffs_obj_t *hard_list = NULL; + yaffs_block_info_t *bi; + __u32 seq_number; + yaffs_obj_header *oh; + yaffs_obj_t *in; + yaffs_obj_t *parent; + + int alloc_failed = 0; + + struct yaffs_shadow_fixer_s *shadowFixerList = NULL; + + + __u8 *chunkData; + + + + T(YAFFS_TRACE_SCAN, + (TSTR("yaffs1_scan starts intstartblk %d intendblk %d..." TENDSTR), + dev->internal_start_block, dev->internal_end_block)); + + chunkData = yaffs_get_temp_buffer(dev, __LINE__); + + dev->seq_number = YAFFS_LOWEST_SEQUENCE_NUMBER; + + /* Scan all the blocks to determine their state */ + bi = dev->block_info; + for (blk = dev->internal_start_block; blk <= dev->internal_end_block; blk++) { + yaffs_clear_chunk_bits(dev, blk); + bi->pages_in_use = 0; + bi->soft_del_pages = 0; + + yaffs_query_init_block_state(dev, blk, &state, &seq_number); + + bi->block_state = state; + bi->seq_number = seq_number; + + if (bi->seq_number == YAFFS_SEQUENCE_BAD_BLOCK) + bi->block_state = state = YAFFS_BLOCK_STATE_DEAD; + + T(YAFFS_TRACE_SCAN_DEBUG, + (TSTR("Block scanning block %d state %d seq %d" TENDSTR), blk, + state, seq_number)); + + if (state == YAFFS_BLOCK_STATE_DEAD) { + T(YAFFS_TRACE_BAD_BLOCKS, + (TSTR("block %d is bad" TENDSTR), blk)); + } else if (state == YAFFS_BLOCK_STATE_EMPTY) { + T(YAFFS_TRACE_SCAN_DEBUG, + (TSTR("Block empty " TENDSTR))); + dev->n_erased_blocks++; + dev->n_free_chunks += dev->param.chunks_per_block; + } + bi++; + } + + startIterator = dev->internal_start_block; + endIterator = dev->internal_end_block; + + /* For each block.... */ + for (blockIterator = startIterator; !alloc_failed && blockIterator <= endIterator; + blockIterator++) { + + YYIELD(); + + YYIELD(); + + blk = blockIterator; + + bi = yaffs_get_block_info(dev, blk); + state = bi->block_state; + + deleted = 0; + + /* For each chunk in each block that needs scanning....*/ + for (c = 0; !alloc_failed && c < dev->param.chunks_per_block && + state == YAFFS_BLOCK_STATE_NEEDS_SCANNING; c++) { + /* Read the tags and decide what to do */ + chunk = blk * dev->param.chunks_per_block + c; + + result = yaffs_rd_chunk_tags_nand(dev, chunk, NULL, + &tags); + + /* Let's have a good look at this chunk... */ + + if (tags.ecc_result == YAFFS_ECC_RESULT_UNFIXED || tags.is_deleted) { + /* YAFFS1 only... + * A deleted chunk + */ + deleted++; + dev->n_free_chunks++; + /*T((" %d %d deleted\n",blk,c)); */ + } else if (!tags.chunk_used) { + /* An unassigned chunk in the block + * This means that either the block is empty or + * this is the one being allocated from + */ + + if (c == 0) { + /* We're looking at the first chunk in the block so the block is unused */ + state = YAFFS_BLOCK_STATE_EMPTY; + dev->n_erased_blocks++; + } else { + /* this is the block being allocated from */ + T(YAFFS_TRACE_SCAN, + (TSTR + (" Allocating from %d %d" TENDSTR), + blk, c)); + state = YAFFS_BLOCK_STATE_ALLOCATING; + dev->alloc_block = blk; + dev->alloc_page = c; + dev->alloc_block_finder = blk; + /* Set block finder here to encourage the allocator to go forth from here. */ + + } + + dev->n_free_chunks += (dev->param.chunks_per_block - c); + } else if (tags.chunk_id > 0) { + /* chunk_id > 0 so it is a data chunk... */ + unsigned int endpos; + + yaffs_set_chunk_bit(dev, blk, c); + bi->pages_in_use++; + + in = yaffs_find_or_create_by_number(dev, + tags. + obj_id, + YAFFS_OBJECT_TYPE_FILE); + /* PutChunkIntoFile checks for a clash (two data chunks with + * the same chunk_id). + */ + + if (!in) + alloc_failed = 1; + + if (in) { + if (!yaffs_put_chunk_in_file(in, tags.chunk_id, chunk, 1)) + alloc_failed = 1; + } + + endpos = + (tags.chunk_id - 1) * dev->data_bytes_per_chunk + + tags.n_bytes; + if (in && + in->variant_type == YAFFS_OBJECT_TYPE_FILE + && in->variant.file_variant.scanned_size < + endpos) { + in->variant.file_variant. + scanned_size = endpos; + if (!dev->param.use_header_file_size) { + in->variant.file_variant. + file_size = + in->variant.file_variant. + scanned_size; + } + + } + /* T((" %d %d data %d %d\n",blk,c,tags.obj_id,tags.chunk_id)); */ + } else { + /* chunk_id == 0, so it is an ObjectHeader. + * Thus, we read in the object header and make the object + */ + yaffs_set_chunk_bit(dev, blk, c); + bi->pages_in_use++; + + result = yaffs_rd_chunk_tags_nand(dev, chunk, + chunkData, + NULL); + + oh = (yaffs_obj_header *) chunkData; + + in = yaffs_find_by_number(dev, + tags.obj_id); + if (in && in->variant_type != oh->type) { + /* This should not happen, but somehow + * Wev'e ended up with an obj_id that has been reused but not yet + * deleted, and worse still it has changed type. Delete the old object. + */ + + yaffs_del_obj(in); + + in = 0; + } + + in = yaffs_find_or_create_by_number(dev, + tags. + obj_id, + oh->type); + + if (!in) + alloc_failed = 1; + + if (in && oh->shadows_obj > 0) { + + struct yaffs_shadow_fixer_s *fixer; + fixer = YMALLOC(sizeof(struct yaffs_shadow_fixer_s)); + if (fixer) { + fixer->next = shadowFixerList; + shadowFixerList = fixer; + fixer->obj_id = tags.obj_id; + fixer->shadowed_id = oh->shadows_obj; + T(YAFFS_TRACE_SCAN, + (TSTR + (" Shadow fixer: %d shadows %d" TENDSTR), + fixer->obj_id, fixer->shadowed_id)); + + } + + } + + if (in && in->valid) { + /* We have already filled this one. We have a duplicate and need to resolve it. */ + + unsigned existingSerial = in->serial; + unsigned newSerial = tags.serial_number; + + if (((existingSerial + 1) & 3) == newSerial) { + /* Use new one - destroy the exisiting one */ + yaffs_chunk_del(dev, + in->hdr_chunk, + 1, __LINE__); + in->valid = 0; + } else { + /* Use existing - destroy this one. */ + yaffs_chunk_del(dev, chunk, 1, + __LINE__); + } + } + + if (in && !in->valid && + (tags.obj_id == YAFFS_OBJECTID_ROOT || + tags.obj_id == YAFFS_OBJECTID_LOSTNFOUND)) { + /* We only load some info, don't fiddle with directory structure */ + in->valid = 1; + in->variant_type = oh->type; + + in->yst_mode = oh->yst_mode; +#ifdef CONFIG_YAFFS_WINCE + in->win_atime[0] = oh->win_atime[0]; + in->win_ctime[0] = oh->win_ctime[0]; + in->win_mtime[0] = oh->win_mtime[0]; + in->win_atime[1] = oh->win_atime[1]; + in->win_ctime[1] = oh->win_ctime[1]; + in->win_mtime[1] = oh->win_mtime[1]; +#else + in->yst_uid = oh->yst_uid; + in->yst_gid = oh->yst_gid; + in->yst_atime = oh->yst_atime; + in->yst_mtime = oh->yst_mtime; + in->yst_ctime = oh->yst_ctime; + in->yst_rdev = oh->yst_rdev; +#endif + in->hdr_chunk = chunk; + in->serial = tags.serial_number; + + } else if (in && !in->valid) { + /* we need to load this info */ + + in->valid = 1; + in->variant_type = oh->type; + + in->yst_mode = oh->yst_mode; +#ifdef CONFIG_YAFFS_WINCE + in->win_atime[0] = oh->win_atime[0]; + in->win_ctime[0] = oh->win_ctime[0]; + in->win_mtime[0] = oh->win_mtime[0]; + in->win_atime[1] = oh->win_atime[1]; + in->win_ctime[1] = oh->win_ctime[1]; + in->win_mtime[1] = oh->win_mtime[1]; +#else + in->yst_uid = oh->yst_uid; + in->yst_gid = oh->yst_gid; + in->yst_atime = oh->yst_atime; + in->yst_mtime = oh->yst_mtime; + in->yst_ctime = oh->yst_ctime; + in->yst_rdev = oh->yst_rdev; +#endif + in->hdr_chunk = chunk; + in->serial = tags.serial_number; + + yaffs_set_obj_name_from_oh(in, oh); + in->dirty = 0; + + /* directory stuff... + * hook up to parent + */ + + parent = + yaffs_find_or_create_by_number + (dev, oh->parent_obj_id, + YAFFS_OBJECT_TYPE_DIRECTORY); + if (!parent) + alloc_failed = 1; + if (parent && parent->variant_type == + YAFFS_OBJECT_TYPE_UNKNOWN) { + /* Set up as a directory */ + parent->variant_type = + YAFFS_OBJECT_TYPE_DIRECTORY; + YINIT_LIST_HEAD(&parent->variant. + dir_variant. + children); + } else if (!parent || parent->variant_type != + YAFFS_OBJECT_TYPE_DIRECTORY) { + /* Hoosterman, another problem.... + * We're trying to use a non-directory as a directory + */ + + T(YAFFS_TRACE_ERROR, + (TSTR + ("yaffs tragedy: attempting to use non-directory as a directory in scan. Put in lost+found." + TENDSTR))); + parent = dev->lost_n_found; + } + + yaffs_add_obj_to_dir(parent, in); + + if (0 && (parent == dev->del_dir || + parent == dev->unlinked_dir)) { + in->deleted = 1; /* If it is unlinked at start up then it wants deleting */ + dev->n_deleted_files++; + } + /* Note re hardlinks. + * Since we might scan a hardlink before its equivalent object is scanned + * we put them all in a list. + * After scanning is complete, we should have all the objects, so we run through this + * list and fix up all the chains. + */ + + switch (in->variant_type) { + case YAFFS_OBJECT_TYPE_UNKNOWN: + /* Todo got a problem */ + break; + case YAFFS_OBJECT_TYPE_FILE: + if (dev->param.use_header_file_size) + + in->variant.file_variant. + file_size = + oh->file_size; + + break; + case YAFFS_OBJECT_TYPE_HARDLINK: + in->variant.hardlink_variant. + equiv_id = + oh->equiv_id; + in->hard_links.next = + (struct ylist_head *) + hard_list; + hard_list = in; + break; + case YAFFS_OBJECT_TYPE_DIRECTORY: + /* Do nothing */ + break; + case YAFFS_OBJECT_TYPE_SPECIAL: + /* Do nothing */ + break; + case YAFFS_OBJECT_TYPE_SYMLINK: + in->variant.symlink_variant.alias = + yaffs_clone_str(oh->alias); + if (!in->variant.symlink_variant.alias) + alloc_failed = 1; + break; + } + + } + } + } + + if (state == YAFFS_BLOCK_STATE_NEEDS_SCANNING) { + /* If we got this far while scanning, then the block is fully allocated.*/ + state = YAFFS_BLOCK_STATE_FULL; + } + + if (state == YAFFS_BLOCK_STATE_ALLOCATING) { + /* If the block was partially allocated then treat it as fully allocated.*/ + state = YAFFS_BLOCK_STATE_FULL; + dev->alloc_block = -1; + } + + bi->block_state = state; + + /* Now let's see if it was dirty */ + if (bi->pages_in_use == 0 && + !bi->has_shrink_hdr && + bi->block_state == YAFFS_BLOCK_STATE_FULL) { + yaffs_block_became_dirty(dev, blk); + } + + } + + + /* Ok, we've done all the scanning. + * Fix up the hard link chains. + * We should now have scanned all the objects, now it's time to add these + * hardlinks. + */ + + yaffs_link_fixup(dev, hard_list); + + /* Fix up any shadowed objects */ + { + struct yaffs_shadow_fixer_s *fixer; + yaffs_obj_t *obj; + + while (shadowFixerList) { + fixer = shadowFixerList; + shadowFixerList = fixer->next; + /* Complete the rename transaction by deleting the shadowed object + * then setting the object header to unshadowed. + */ + obj = yaffs_find_by_number(dev, fixer->shadowed_id); + if (obj) + yaffs_del_obj(obj); + + obj = yaffs_find_by_number(dev, fixer->obj_id); + + if (obj) + yaffs_update_oh(obj, NULL, 1, 0, 0, NULL); + + YFREE(fixer); + } + } + + yaffs_release_temp_buffer(dev, chunkData, __LINE__); + + if (alloc_failed) + return YAFFS_FAIL; + + T(YAFFS_TRACE_SCAN, (TSTR("yaffs1_scan ends" TENDSTR))); + + + return YAFFS_OK; +} + diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_yaffs1.h b/target/linux/generic/files/fs/yaffs2/yaffs_yaffs1.h new file mode 100644 index 0000000000..1f60b0cdb7 --- /dev/null +++ b/target/linux/generic/files/fs/yaffs2/yaffs_yaffs1.h @@ -0,0 +1,22 @@ +/* + * YAFFS: Yet another Flash File System . A NAND-flash specific file system. + * + * Copyright (C) 2002-2010 Aleph One Ltd. + * for Toby Churchill Ltd and Brightstar Engineering + * + * Created by Charles Manning <charles@aleph1.co.uk> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License version 2.1 as + * published by the Free Software Foundation. + * + * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL. + */ + +#ifndef __YAFFS_YAFFS1_H__ +#define __YAFFS_YAFFS1_H__ + +#include "yaffs_guts.h" +int yaffs1_scan(yaffs_dev_t *dev); + +#endif diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_yaffs2.c b/target/linux/generic/files/fs/yaffs2/yaffs_yaffs2.c new file mode 100644 index 0000000000..58c36003f6 --- /dev/null +++ b/target/linux/generic/files/fs/yaffs2/yaffs_yaffs2.c @@ -0,0 +1,1540 @@ +/* + * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. + * + * Copyright (C) 2002-2010 Aleph One Ltd. + * for Toby Churchill Ltd and Brightstar Engineering + * + * Created by Charles Manning <charles@aleph1.co.uk> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + + +#include "yaffs_guts.h" +#include "yaffs_trace.h" +#include "yaffs_yaffs2.h" +#include "yaffs_checkptrw.h" +#include "yaffs_bitmap.h" +#include "yaffs_qsort.h" +#include "yaffs_nand.h" +#include "yaffs_getblockinfo.h" +#include "yaffs_verify.h" + +/* + * Checkpoints are really no benefit on very small partitions. + * + * To save space on small partitions don't bother with checkpoints unless + * the partition is at least this big. + */ +#define YAFFS_CHECKPOINT_MIN_BLOCKS 60 + +#define YAFFS_SMALL_HOLE_THRESHOLD 4 + + +/* + * Oldest Dirty Sequence Number handling. + */ + +/* yaffs_calc_oldest_dirty_seq() + * yaffs2_find_oldest_dirty_seq() + * Calculate the oldest dirty sequence number if we don't know it. + */ +void yaffs_calc_oldest_dirty_seq(yaffs_dev_t *dev) +{ + int i; + unsigned seq; + unsigned block_no = 0; + yaffs_block_info_t *b; + + if(!dev->param.is_yaffs2) + return; + + /* Find the oldest dirty sequence number. */ + seq = dev->seq_number + 1; + b = dev->block_info; + for (i = dev->internal_start_block; i <= dev->internal_end_block; i++) { + if (b->block_state == YAFFS_BLOCK_STATE_FULL && + (b->pages_in_use - b->soft_del_pages) < dev->param.chunks_per_block && + b->seq_number < seq) { + seq = b->seq_number; + block_no = i; + } + b++; + } + + if(block_no){ + dev->oldest_dirty_seq = seq; + dev->oldest_dirty_block = block_no; + } + +} + + +void yaffs2_find_oldest_dirty_seq(yaffs_dev_t *dev) +{ + if(!dev->param.is_yaffs2) + return; + + if(!dev->oldest_dirty_seq) + yaffs_calc_oldest_dirty_seq(dev); +} + +/* + * yaffs_clear_oldest_dirty_seq() + * Called when a block is erased or marked bad. (ie. when its seq_number + * becomes invalid). If the value matches the oldest then we clear + * dev->oldest_dirty_seq to force its recomputation. + */ +void yaffs2_clear_oldest_dirty_seq(yaffs_dev_t *dev, yaffs_block_info_t *bi) +{ + + if(!dev->param.is_yaffs2) + return; + + if(!bi || bi->seq_number == dev->oldest_dirty_seq){ + dev->oldest_dirty_seq = 0; + dev->oldest_dirty_block = 0; + } +} + +/* + * yaffs2_update_oldest_dirty_seq() + * Update the oldest dirty sequence number whenever we dirty a block. + * Only do this if the oldest_dirty_seq is actually being tracked. + */ +void yaffs2_update_oldest_dirty_seq(yaffs_dev_t *dev, unsigned block_no, yaffs_block_info_t *bi) +{ + if(!dev->param.is_yaffs2) + return; + + if(dev->oldest_dirty_seq){ + if(dev->oldest_dirty_seq > bi->seq_number){ + dev->oldest_dirty_seq = bi->seq_number; + dev->oldest_dirty_block = block_no; + } + } +} + +int yaffs_block_ok_for_gc(yaffs_dev_t *dev, + yaffs_block_info_t *bi) +{ + + if (!dev->param.is_yaffs2) + return 1; /* disqualification only applies to yaffs2. */ + + if (!bi->has_shrink_hdr) + return 1; /* can gc */ + + yaffs2_find_oldest_dirty_seq(dev); + + /* Can't do gc of this block if there are any blocks older than this one that have + * discarded pages. + */ + return (bi->seq_number <= dev->oldest_dirty_seq); +} + +/* + * yaffs2_find_refresh_block() + * periodically finds the oldest full block by sequence number for refreshing. + * Only for yaffs2. + */ +__u32 yaffs2_find_refresh_block(yaffs_dev_t *dev) +{ + __u32 b ; + + __u32 oldest = 0; + __u32 oldestSequence = 0; + + yaffs_block_info_t *bi; + + if(!dev->param.is_yaffs2) + return oldest; + + /* + * If refresh period < 10 then refreshing is disabled. + */ + if(dev->param.refresh_period < 10) + return oldest; + + /* + * Fix broken values. + */ + if(dev->refresh_skip > dev->param.refresh_period) + dev->refresh_skip = dev->param.refresh_period; + + if(dev->refresh_skip > 0) + return oldest; + + /* + * Refresh skip is now zero. + * We'll do a refresh this time around.... + * Update the refresh skip and find the oldest block. + */ + dev->refresh_skip = dev->param.refresh_period; + dev->refresh_count++; + bi = dev->block_info; + for (b = dev->internal_start_block; b <=dev->internal_end_block; b++){ + + if (bi->block_state == YAFFS_BLOCK_STATE_FULL){ + + if(oldest < 1 || + bi->seq_number < oldestSequence){ + oldest = b; + oldestSequence = bi->seq_number; + } + } + bi++; + } + + if (oldest > 0) { + T(YAFFS_TRACE_GC, + (TSTR("GC refresh count %d selected block %d with seq_number %d" TENDSTR), + dev->refresh_count, oldest, oldestSequence)); + } + + return oldest; +} + +int yaffs2_checkpt_required(yaffs_dev_t *dev) +{ + int nblocks; + + if(!dev->param.is_yaffs2) + return 0; + + nblocks = dev->internal_end_block - dev->internal_start_block + 1 ; + + return !dev->param.skip_checkpt_wr && + !dev->read_only && + (nblocks >= YAFFS_CHECKPOINT_MIN_BLOCKS); +} + +int yaffs_calc_checkpt_blocks_required(yaffs_dev_t *dev) +{ + int retval; + + if(!dev->param.is_yaffs2) + return 0; + + if (!dev->checkpoint_blocks_required && + yaffs2_checkpt_required(dev)){ + /* Not a valid value so recalculate */ + int n_bytes = 0; + int nBlocks; + int devBlocks = (dev->param.end_block - dev->param.start_block + 1); + + n_bytes += sizeof(yaffs_checkpt_validty_t); + n_bytes += sizeof(yaffs_checkpt_dev_t); + n_bytes += devBlocks * sizeof(yaffs_block_info_t); + n_bytes += devBlocks * dev->chunk_bit_stride; + n_bytes += (sizeof(yaffs_checkpt_obj_t) + sizeof(__u32)) * (dev->n_obj); + n_bytes += (dev->tnode_size + sizeof(__u32)) * (dev->n_tnodes); + n_bytes += sizeof(yaffs_checkpt_validty_t); + n_bytes += sizeof(__u32); /* checksum*/ + + /* Round up and add 2 blocks to allow for some bad blocks, so add 3 */ + + nBlocks = (n_bytes/(dev->data_bytes_per_chunk * dev->param.chunks_per_block)) + 3; + + dev->checkpoint_blocks_required = nBlocks; + } + + retval = dev->checkpoint_blocks_required - dev->blocks_in_checkpt; + if(retval < 0) + retval = 0; + return retval; +} + +/*--------------------- Checkpointing --------------------*/ + + +static int yaffs2_wr_checkpt_validity_marker(yaffs_dev_t *dev, int head) +{ + yaffs_checkpt_validty_t cp; + + memset(&cp, 0, sizeof(cp)); + + cp.struct_type = sizeof(cp); + cp.magic = YAFFS_MAGIC; + cp.version = YAFFS_CHECKPOINT_VERSION; + cp.head = (head) ? 1 : 0; + + return (yaffs2_checkpt_wr(dev, &cp, sizeof(cp)) == sizeof(cp)) ? + 1 : 0; +} + +static int yaffs2_rd_checkpt_validty_marker(yaffs_dev_t *dev, int head) +{ + yaffs_checkpt_validty_t cp; + int ok; + + ok = (yaffs2_checkpt_rd(dev, &cp, sizeof(cp)) == sizeof(cp)); + + if (ok) + ok = (cp.struct_type == sizeof(cp)) && + (cp.magic == YAFFS_MAGIC) && + (cp.version == YAFFS_CHECKPOINT_VERSION) && + (cp.head == ((head) ? 1 : 0)); + return ok ? 1 : 0; +} + +static void yaffs2_dev_to_checkpt_dev(yaffs_checkpt_dev_t *cp, + yaffs_dev_t *dev) +{ + cp->n_erased_blocks = dev->n_erased_blocks; + cp->alloc_block = dev->alloc_block; + cp->alloc_page = dev->alloc_page; + cp->n_free_chunks = dev->n_free_chunks; + + cp->n_deleted_files = dev->n_deleted_files; + cp->n_unlinked_files = dev->n_unlinked_files; + cp->n_bg_deletions = dev->n_bg_deletions; + cp->seq_number = dev->seq_number; + +} + +static void yaffs_checkpt_dev_to_dev(yaffs_dev_t *dev, + yaffs_checkpt_dev_t *cp) +{ + dev->n_erased_blocks = cp->n_erased_blocks; + dev->alloc_block = cp->alloc_block; + dev->alloc_page = cp->alloc_page; + dev->n_free_chunks = cp->n_free_chunks; + + dev->n_deleted_files = cp->n_deleted_files; + dev->n_unlinked_files = cp->n_unlinked_files; + dev->n_bg_deletions = cp->n_bg_deletions; + dev->seq_number = cp->seq_number; +} + + +static int yaffs2_wr_checkpt_dev(yaffs_dev_t *dev) +{ + yaffs_checkpt_dev_t cp; + __u32 n_bytes; + __u32 nBlocks = (dev->internal_end_block - dev->internal_start_block + 1); + + int ok; + + /* Write device runtime values*/ + yaffs2_dev_to_checkpt_dev(&cp, dev); + cp.struct_type = sizeof(cp); + + ok = (yaffs2_checkpt_wr(dev, &cp, sizeof(cp)) == sizeof(cp)); + + /* Write block info */ + if (ok) { + n_bytes = nBlocks * sizeof(yaffs_block_info_t); + ok = (yaffs2_checkpt_wr(dev, dev->block_info, n_bytes) == n_bytes); + } + + /* Write chunk bits */ + if (ok) { + n_bytes = nBlocks * dev->chunk_bit_stride; + ok = (yaffs2_checkpt_wr(dev, dev->chunk_bits, n_bytes) == n_bytes); + } + return ok ? 1 : 0; + +} + +static int yaffs2_rd_checkpt_dev(yaffs_dev_t *dev) +{ + yaffs_checkpt_dev_t cp; + __u32 n_bytes; + __u32 nBlocks = (dev->internal_end_block - dev->internal_start_block + 1); + + int ok; + + ok = (yaffs2_checkpt_rd(dev, &cp, sizeof(cp)) == sizeof(cp)); + if (!ok) + return 0; + + if (cp.struct_type != sizeof(cp)) + return 0; + + + yaffs_checkpt_dev_to_dev(dev, &cp); + + n_bytes = nBlocks * sizeof(yaffs_block_info_t); + + ok = (yaffs2_checkpt_rd(dev, dev->block_info, n_bytes) == n_bytes); + + if (!ok) + return 0; + n_bytes = nBlocks * dev->chunk_bit_stride; + + ok = (yaffs2_checkpt_rd(dev, dev->chunk_bits, n_bytes) == n_bytes); + + return ok ? 1 : 0; +} + +static void yaffs2_obj_checkpt_obj(yaffs_checkpt_obj_t *cp, + yaffs_obj_t *obj) +{ + + cp->obj_id = obj->obj_id; + cp->parent_id = (obj->parent) ? obj->parent->obj_id : 0; + cp->hdr_chunk = obj->hdr_chunk; + cp->variant_type = obj->variant_type; + cp->deleted = obj->deleted; + cp->soft_del = obj->soft_del; + cp->unlinked = obj->unlinked; + cp->fake = obj->fake; + cp->rename_allowed = obj->rename_allowed; + cp->unlink_allowed = obj->unlink_allowed; + cp->serial = obj->serial; + cp->n_data_chunks = obj->n_data_chunks; + + if (obj->variant_type == YAFFS_OBJECT_TYPE_FILE) + cp->size_or_equiv_obj = obj->variant.file_variant.file_size; + else if (obj->variant_type == YAFFS_OBJECT_TYPE_HARDLINK) + cp->size_or_equiv_obj = obj->variant.hardlink_variant.equiv_id; +} + +static int taffs2_checkpt_obj_to_obj(yaffs_obj_t *obj, yaffs_checkpt_obj_t *cp) +{ + + yaffs_obj_t *parent; + + if (obj->variant_type != cp->variant_type) { + T(YAFFS_TRACE_ERROR, (TSTR("Checkpoint read object %d type %d " + TCONT("chunk %d does not match existing object type %d") + TENDSTR), cp->obj_id, cp->variant_type, cp->hdr_chunk, + obj->variant_type)); + return 0; + } + + obj->obj_id = cp->obj_id; + + if (cp->parent_id) + parent = yaffs_find_or_create_by_number( + obj->my_dev, + cp->parent_id, + YAFFS_OBJECT_TYPE_DIRECTORY); + else + parent = NULL; + + if (parent) { + if (parent->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) { + T(YAFFS_TRACE_ALWAYS, (TSTR("Checkpoint read object %d parent %d type %d" + TCONT(" chunk %d Parent type, %d, not directory") + TENDSTR), + cp->obj_id, cp->parent_id, cp->variant_type, + cp->hdr_chunk, parent->variant_type)); + return 0; + } + yaffs_add_obj_to_dir(parent, obj); + } + + obj->hdr_chunk = cp->hdr_chunk; + obj->variant_type = cp->variant_type; + obj->deleted = cp->deleted; + obj->soft_del = cp->soft_del; + obj->unlinked = cp->unlinked; + obj->fake = cp->fake; + obj->rename_allowed = cp->rename_allowed; + obj->unlink_allowed = cp->unlink_allowed; + obj->serial = cp->serial; + obj->n_data_chunks = cp->n_data_chunks; + + if (obj->variant_type == YAFFS_OBJECT_TYPE_FILE) + obj->variant.file_variant.file_size = cp->size_or_equiv_obj; + else if (obj->variant_type == YAFFS_OBJECT_TYPE_HARDLINK) + obj->variant.hardlink_variant.equiv_id = cp->size_or_equiv_obj; + + if (obj->hdr_chunk > 0) + obj->lazy_loaded = 1; + return 1; +} + + + +static int yaffs2_checkpt_tnode_worker(yaffs_obj_t *in, yaffs_tnode_t *tn, + __u32 level, int chunk_offset) +{ + int i; + yaffs_dev_t *dev = in->my_dev; + int ok = 1; + + if (tn) { + if (level > 0) { + + for (i = 0; i < YAFFS_NTNODES_INTERNAL && ok; i++) { + if (tn->internal[i]) { + ok = yaffs2_checkpt_tnode_worker(in, + tn->internal[i], + level - 1, + (chunk_offset<<YAFFS_TNODES_INTERNAL_BITS) + i); + } + } + } else if (level == 0) { + __u32 baseOffset = chunk_offset << YAFFS_TNODES_LEVEL0_BITS; + ok = (yaffs2_checkpt_wr(dev, &baseOffset, sizeof(baseOffset)) == sizeof(baseOffset)); + if (ok) + ok = (yaffs2_checkpt_wr(dev, tn, dev->tnode_size) == dev->tnode_size); + } + } + + return ok; + +} + +static int yaffs2_wr_checkpt_tnodes(yaffs_obj_t *obj) +{ + __u32 endMarker = ~0; + int ok = 1; + + if (obj->variant_type == YAFFS_OBJECT_TYPE_FILE) { + ok = yaffs2_checkpt_tnode_worker(obj, + obj->variant.file_variant.top, + obj->variant.file_variant.top_level, + 0); + if (ok) + ok = (yaffs2_checkpt_wr(obj->my_dev, &endMarker, sizeof(endMarker)) == + sizeof(endMarker)); + } + + return ok ? 1 : 0; +} + +static int yaffs2_rd_checkpt_tnodes(yaffs_obj_t *obj) +{ + __u32 baseChunk; + int ok = 1; + yaffs_dev_t *dev = obj->my_dev; + yaffs_file_s *fileStructPtr = &obj->variant.file_variant; + yaffs_tnode_t *tn; + int nread = 0; + + ok = (yaffs2_checkpt_rd(dev, &baseChunk, sizeof(baseChunk)) == sizeof(baseChunk)); + + while (ok && (~baseChunk)) { + nread++; + /* Read level 0 tnode */ + + + tn = yaffs_get_tnode(dev); + if (tn){ + ok = (yaffs2_checkpt_rd(dev, tn, dev->tnode_size) == dev->tnode_size); + } else + ok = 0; + + if (tn && ok) + ok = yaffs_add_find_tnode_0(dev, + fileStructPtr, + baseChunk, + tn) ? 1 : 0; + + if (ok) + ok = (yaffs2_checkpt_rd(dev, &baseChunk, sizeof(baseChunk)) == sizeof(baseChunk)); + + } + + T(YAFFS_TRACE_CHECKPOINT, ( + TSTR("Checkpoint read tnodes %d records, last %d. ok %d" TENDSTR), + nread, baseChunk, ok)); + + return ok ? 1 : 0; +} + + +static int yaffs2_wr_checkpt_objs(yaffs_dev_t *dev) +{ + yaffs_obj_t *obj; + yaffs_checkpt_obj_t cp; + int i; + int ok = 1; + struct ylist_head *lh; + + + /* Iterate through the objects in each hash entry, + * dumping them to the checkpointing stream. + */ + + for (i = 0; ok && i < YAFFS_NOBJECT_BUCKETS; i++) { + ylist_for_each(lh, &dev->obj_bucket[i].list) { + if (lh) { + obj = ylist_entry(lh, yaffs_obj_t, hash_link); + if (!obj->defered_free) { + yaffs2_obj_checkpt_obj(&cp, obj); + cp.struct_type = sizeof(cp); + + T(YAFFS_TRACE_CHECKPOINT, ( + TSTR("Checkpoint write object %d parent %d type %d chunk %d obj addr %p" TENDSTR), + cp.obj_id, cp.parent_id, cp.variant_type, cp.hdr_chunk, obj)); + + ok = (yaffs2_checkpt_wr(dev, &cp, sizeof(cp)) == sizeof(cp)); + + if (ok && obj->variant_type == YAFFS_OBJECT_TYPE_FILE) + ok = yaffs2_wr_checkpt_tnodes(obj); + } + } + } + } + + /* Dump end of list */ + memset(&cp, 0xFF, sizeof(yaffs_checkpt_obj_t)); + cp.struct_type = sizeof(cp); + + if (ok) + ok = (yaffs2_checkpt_wr(dev, &cp, sizeof(cp)) == sizeof(cp)); + + return ok ? 1 : 0; +} + +static int yaffs2_rd_checkpt_objs(yaffs_dev_t *dev) +{ + yaffs_obj_t *obj; + yaffs_checkpt_obj_t cp; + int ok = 1; + int done = 0; + yaffs_obj_t *hard_list = NULL; + + while (ok && !done) { + ok = (yaffs2_checkpt_rd(dev, &cp, sizeof(cp)) == sizeof(cp)); + if (cp.struct_type != sizeof(cp)) { + T(YAFFS_TRACE_CHECKPOINT, (TSTR("struct size %d instead of %d ok %d"TENDSTR), + cp.struct_type, (int)sizeof(cp), ok)); + ok = 0; + } + + T(YAFFS_TRACE_CHECKPOINT, (TSTR("Checkpoint read object %d parent %d type %d chunk %d " TENDSTR), + cp.obj_id, cp.parent_id, cp.variant_type, cp.hdr_chunk)); + + if (ok && cp.obj_id == ~0) + done = 1; + else if (ok) { + obj = yaffs_find_or_create_by_number(dev, cp.obj_id, cp.variant_type); + if (obj) { + ok = taffs2_checkpt_obj_to_obj(obj, &cp); + if (!ok) + break; + if (obj->variant_type == YAFFS_OBJECT_TYPE_FILE) { + ok = yaffs2_rd_checkpt_tnodes(obj); + } else if (obj->variant_type == YAFFS_OBJECT_TYPE_HARDLINK) { + obj->hard_links.next = + (struct ylist_head *) hard_list; + hard_list = obj; + } + } else + ok = 0; + } + } + + if (ok) + yaffs_link_fixup(dev, hard_list); + + return ok ? 1 : 0; +} + +static int yaffs2_wr_checkpt_sum(yaffs_dev_t *dev) +{ + __u32 checkpt_sum; + int ok; + + yaffs2_get_checkpt_sum(dev, &checkpt_sum); + + ok = (yaffs2_checkpt_wr(dev, &checkpt_sum, sizeof(checkpt_sum)) == sizeof(checkpt_sum)); + + if (!ok) + return 0; + + return 1; +} + +static int yaffs2_rd_checkpt_sum(yaffs_dev_t *dev) +{ + __u32 checkpt_sum0; + __u32 checkpt_sum1; + int ok; + + yaffs2_get_checkpt_sum(dev, &checkpt_sum0); + + ok = (yaffs2_checkpt_rd(dev, &checkpt_sum1, sizeof(checkpt_sum1)) == sizeof(checkpt_sum1)); + + if (!ok) + return 0; + + if (checkpt_sum0 != checkpt_sum1) + return 0; + + return 1; +} + + +static int yaffs2_wr_checkpt_data(yaffs_dev_t *dev) +{ + int ok = 1; + + if (!yaffs2_checkpt_required(dev)) { + T(YAFFS_TRACE_CHECKPOINT, (TSTR("skipping checkpoint write" TENDSTR))); + ok = 0; + } + + if (ok) + ok = yaffs2_checkpt_open(dev, 1); + + if (ok) { + T(YAFFS_TRACE_CHECKPOINT, (TSTR("write checkpoint validity" TENDSTR))); + ok = yaffs2_wr_checkpt_validity_marker(dev, 1); + } + if (ok) { + T(YAFFS_TRACE_CHECKPOINT, (TSTR("write checkpoint device" TENDSTR))); + ok = yaffs2_wr_checkpt_dev(dev); + } + if (ok) { + T(YAFFS_TRACE_CHECKPOINT, (TSTR("write checkpoint objects" TENDSTR))); + ok = yaffs2_wr_checkpt_objs(dev); + } + if (ok) { + T(YAFFS_TRACE_CHECKPOINT, (TSTR("write checkpoint validity" TENDSTR))); + ok = yaffs2_wr_checkpt_validity_marker(dev, 0); + } + + if (ok) + ok = yaffs2_wr_checkpt_sum(dev); + + if (!yaffs_checkpt_close(dev)) + ok = 0; + + if (ok) + dev->is_checkpointed = 1; + else + dev->is_checkpointed = 0; + + return dev->is_checkpointed; +} + +static int yaffs2_rd_checkpt_data(yaffs_dev_t *dev) +{ + int ok = 1; + + if(!dev->param.is_yaffs2) + ok = 0; + + if (ok && dev->param.skip_checkpt_rd) { + T(YAFFS_TRACE_CHECKPOINT, (TSTR("skipping checkpoint read" TENDSTR))); + ok = 0; + } + + if (ok) + ok = yaffs2_checkpt_open(dev, 0); /* open for read */ + + if (ok) { + T(YAFFS_TRACE_CHECKPOINT, (TSTR("read checkpoint validity" TENDSTR))); + ok = yaffs2_rd_checkpt_validty_marker(dev, 1); + } + if (ok) { + T(YAFFS_TRACE_CHECKPOINT, (TSTR("read checkpoint device" TENDSTR))); + ok = yaffs2_rd_checkpt_dev(dev); + } + if (ok) { + T(YAFFS_TRACE_CHECKPOINT, (TSTR("read checkpoint objects" TENDSTR))); + ok = yaffs2_rd_checkpt_objs(dev); + } + if (ok) { + T(YAFFS_TRACE_CHECKPOINT, (TSTR("read checkpoint validity" TENDSTR))); + ok = yaffs2_rd_checkpt_validty_marker(dev, 0); + } + + if (ok) { + ok = yaffs2_rd_checkpt_sum(dev); + T(YAFFS_TRACE_CHECKPOINT, (TSTR("read checkpoint checksum %d" TENDSTR), ok)); + } + + if (!yaffs_checkpt_close(dev)) + ok = 0; + + if (ok) + dev->is_checkpointed = 1; + else + dev->is_checkpointed = 0; + + return ok ? 1 : 0; + +} + +void yaffs2_checkpt_invalidate(yaffs_dev_t *dev) +{ + if (dev->is_checkpointed || + dev->blocks_in_checkpt > 0) { + dev->is_checkpointed = 0; + yaffs2_checkpt_invalidate_stream(dev); + } + if (dev->param.sb_dirty_fn) + dev->param.sb_dirty_fn(dev); +} + + +int yaffs_checkpoint_save(yaffs_dev_t *dev) +{ + + T(YAFFS_TRACE_CHECKPOINT, (TSTR("save entry: is_checkpointed %d"TENDSTR), dev->is_checkpointed)); + + yaffs_verify_objects(dev); + yaffs_verify_blocks(dev); + yaffs_verify_free_chunks(dev); + + if (!dev->is_checkpointed) { + yaffs2_checkpt_invalidate(dev); + yaffs2_wr_checkpt_data(dev); + } + + T(YAFFS_TRACE_ALWAYS, (TSTR("save exit: is_checkpointed %d"TENDSTR), dev->is_checkpointed)); + + return dev->is_checkpointed; +} + +int yaffs2_checkpt_restore(yaffs_dev_t *dev) +{ + int retval; + T(YAFFS_TRACE_CHECKPOINT, (TSTR("restore entry: is_checkpointed %d"TENDSTR), dev->is_checkpointed)); + + retval = yaffs2_rd_checkpt_data(dev); + + if (dev->is_checkpointed) { + yaffs_verify_objects(dev); + yaffs_verify_blocks(dev); + yaffs_verify_free_chunks(dev); + } + + T(YAFFS_TRACE_CHECKPOINT, (TSTR("restore exit: is_checkpointed %d"TENDSTR), dev->is_checkpointed)); + + return retval; +} + +int yaffs2_handle_hole(yaffs_obj_t *obj, loff_t new_size) +{ + /* if newsSize > oldFileSize. + * We're going to be writing a hole. + * If the hole is small then write zeros otherwise write a start of hole marker. + */ + + + loff_t oldFileSize; + int increase; + int smallHole ; + int result = YAFFS_OK; + yaffs_dev_t *dev = NULL; + + __u8 *localBuffer = NULL; + + int smallIncreaseOk = 0; + + if(!obj) + return YAFFS_FAIL; + + if(obj->variant_type != YAFFS_OBJECT_TYPE_FILE) + return YAFFS_FAIL; + + dev = obj->my_dev; + + /* Bail out if not yaffs2 mode */ + if(!dev->param.is_yaffs2) + return YAFFS_OK; + + oldFileSize = obj->variant.file_variant.file_size; + + if (new_size <= oldFileSize) + return YAFFS_OK; + + increase = new_size - oldFileSize; + + if(increase < YAFFS_SMALL_HOLE_THRESHOLD * dev->data_bytes_per_chunk && + yaffs_check_alloc_available(dev, YAFFS_SMALL_HOLE_THRESHOLD + 1)) + smallHole = 1; + else + smallHole = 0; + + if(smallHole) + localBuffer= yaffs_get_temp_buffer(dev, __LINE__); + + if(localBuffer){ + /* fill hole with zero bytes */ + int pos = oldFileSize; + int thisWrite; + int written; + memset(localBuffer,0,dev->data_bytes_per_chunk); + smallIncreaseOk = 1; + + while(increase > 0 && smallIncreaseOk){ + thisWrite = increase; + if(thisWrite > dev->data_bytes_per_chunk) + thisWrite = dev->data_bytes_per_chunk; + written = yaffs_do_file_wr(obj,localBuffer,pos,thisWrite,0); + if(written == thisWrite){ + pos += thisWrite; + increase -= thisWrite; + } else + smallIncreaseOk = 0; + } + + yaffs_release_temp_buffer(dev,localBuffer,__LINE__); + + /* If we were out of space then reverse any chunks we've added */ + if(!smallIncreaseOk) + yaffs_resize_file_down(obj, oldFileSize); + } + + if (!smallIncreaseOk && + obj->parent && + obj->parent->obj_id != YAFFS_OBJECTID_UNLINKED && + obj->parent->obj_id != YAFFS_OBJECTID_DELETED){ + /* Write a hole start header with the old file size */ + yaffs_update_oh(obj, NULL, 0, 1, 0, NULL); + } + + return result; + +} + + +typedef struct { + int seq; + int block; +} yaffs_BlockIndex; + + +static int yaffs2_ybicmp(const void *a, const void *b) +{ + register int aseq = ((yaffs_BlockIndex *)a)->seq; + register int bseq = ((yaffs_BlockIndex *)b)->seq; + register int ablock = ((yaffs_BlockIndex *)a)->block; + register int bblock = ((yaffs_BlockIndex *)b)->block; + if (aseq == bseq) + return ablock - bblock; + else + return aseq - bseq; +} + +int yaffs2_scan_backwards(yaffs_dev_t *dev) +{ + yaffs_ext_tags tags; + int blk; + int blockIterator; + int startIterator; + int endIterator; + int nBlocksToScan = 0; + + int chunk; + int result; + int c; + int deleted; + yaffs_block_state_t state; + yaffs_obj_t *hard_list = NULL; + yaffs_block_info_t *bi; + __u32 seq_number; + yaffs_obj_header *oh; + yaffs_obj_t *in; + yaffs_obj_t *parent; + int nBlocks = dev->internal_end_block - dev->internal_start_block + 1; + int itsUnlinked; + __u8 *chunkData; + + int file_size; + int is_shrink; + int foundChunksInBlock; + int equiv_id; + int alloc_failed = 0; + + + yaffs_BlockIndex *blockIndex = NULL; + int altBlockIndex = 0; + + T(YAFFS_TRACE_SCAN, + (TSTR + ("yaffs2_scan_backwards starts intstartblk %d intendblk %d..." + TENDSTR), dev->internal_start_block, dev->internal_end_block)); + + + dev->seq_number = YAFFS_LOWEST_SEQUENCE_NUMBER; + + blockIndex = YMALLOC(nBlocks * sizeof(yaffs_BlockIndex)); + + if (!blockIndex) { + blockIndex = YMALLOC_ALT(nBlocks * sizeof(yaffs_BlockIndex)); + altBlockIndex = 1; + } + + if (!blockIndex) { + T(YAFFS_TRACE_SCAN, + (TSTR("yaffs2_scan_backwards() could not allocate block index!" TENDSTR))); + return YAFFS_FAIL; + } + + dev->blocks_in_checkpt = 0; + + chunkData = yaffs_get_temp_buffer(dev, __LINE__); + + /* Scan all the blocks to determine their state */ + bi = dev->block_info; + for (blk = dev->internal_start_block; blk <= dev->internal_end_block; blk++) { + yaffs_clear_chunk_bits(dev, blk); + bi->pages_in_use = 0; + bi->soft_del_pages = 0; + + yaffs_query_init_block_state(dev, blk, &state, &seq_number); + + bi->block_state = state; + bi->seq_number = seq_number; + + if (bi->seq_number == YAFFS_SEQUENCE_CHECKPOINT_DATA) + bi->block_state = state = YAFFS_BLOCK_STATE_CHECKPOINT; + if (bi->seq_number == YAFFS_SEQUENCE_BAD_BLOCK) + bi->block_state = state = YAFFS_BLOCK_STATE_DEAD; + + T(YAFFS_TRACE_SCAN_DEBUG, + (TSTR("Block scanning block %d state %d seq %d" TENDSTR), blk, + state, seq_number)); + + + if (state == YAFFS_BLOCK_STATE_CHECKPOINT) { + dev->blocks_in_checkpt++; + + } else if (state == YAFFS_BLOCK_STATE_DEAD) { + T(YAFFS_TRACE_BAD_BLOCKS, + (TSTR("block %d is bad" TENDSTR), blk)); + } else if (state == YAFFS_BLOCK_STATE_EMPTY) { + T(YAFFS_TRACE_SCAN_DEBUG, + (TSTR("Block empty " TENDSTR))); + dev->n_erased_blocks++; + dev->n_free_chunks += dev->param.chunks_per_block; + } else if (state == YAFFS_BLOCK_STATE_NEEDS_SCANNING) { + + /* Determine the highest sequence number */ + if (seq_number >= YAFFS_LOWEST_SEQUENCE_NUMBER && + seq_number < YAFFS_HIGHEST_SEQUENCE_NUMBER) { + + blockIndex[nBlocksToScan].seq = seq_number; + blockIndex[nBlocksToScan].block = blk; + + nBlocksToScan++; + + if (seq_number >= dev->seq_number) + dev->seq_number = seq_number; + } else { + /* TODO: Nasty sequence number! */ + T(YAFFS_TRACE_SCAN, + (TSTR + ("Block scanning block %d has bad sequence number %d" + TENDSTR), blk, seq_number)); + + } + } + bi++; + } + + T(YAFFS_TRACE_SCAN, + (TSTR("%d blocks to be sorted..." TENDSTR), nBlocksToScan)); + + + + YYIELD(); + + /* Sort the blocks by sequence number*/ + yaffs_qsort(blockIndex, nBlocksToScan, sizeof(yaffs_BlockIndex), yaffs2_ybicmp); + + YYIELD(); + + T(YAFFS_TRACE_SCAN, (TSTR("...done" TENDSTR))); + + /* Now scan the blocks looking at the data. */ + startIterator = 0; + endIterator = nBlocksToScan - 1; + T(YAFFS_TRACE_SCAN_DEBUG, + (TSTR("%d blocks to be scanned" TENDSTR), nBlocksToScan)); + + /* For each block.... backwards */ + for (blockIterator = endIterator; !alloc_failed && blockIterator >= startIterator; + blockIterator--) { + /* Cooperative multitasking! This loop can run for so + long that watchdog timers expire. */ + YYIELD(); + + /* get the block to scan in the correct order */ + blk = blockIndex[blockIterator].block; + + bi = yaffs_get_block_info(dev, blk); + + + state = bi->block_state; + + deleted = 0; + + /* For each chunk in each block that needs scanning.... */ + foundChunksInBlock = 0; + for (c = dev->param.chunks_per_block - 1; + !alloc_failed && c >= 0 && + (state == YAFFS_BLOCK_STATE_NEEDS_SCANNING || + state == YAFFS_BLOCK_STATE_ALLOCATING); c--) { + /* Scan backwards... + * Read the tags and decide what to do + */ + + chunk = blk * dev->param.chunks_per_block + c; + + result = yaffs_rd_chunk_tags_nand(dev, chunk, NULL, + &tags); + + /* Let's have a good look at this chunk... */ + + if (!tags.chunk_used) { + /* An unassigned chunk in the block. + * If there are used chunks after this one, then + * it is a chunk that was skipped due to failing the erased + * check. Just skip it so that it can be deleted. + * But, more typically, We get here when this is an unallocated + * chunk and his means that either the block is empty or + * this is the one being allocated from + */ + + if (foundChunksInBlock) { + /* This is a chunk that was skipped due to failing the erased check */ + } else if (c == 0) { + /* We're looking at the first chunk in the block so the block is unused */ + state = YAFFS_BLOCK_STATE_EMPTY; + dev->n_erased_blocks++; + } else { + if (state == YAFFS_BLOCK_STATE_NEEDS_SCANNING || + state == YAFFS_BLOCK_STATE_ALLOCATING) { + if (dev->seq_number == bi->seq_number) { + /* this is the block being allocated from */ + + T(YAFFS_TRACE_SCAN, + (TSTR + (" Allocating from %d %d" + TENDSTR), blk, c)); + + state = YAFFS_BLOCK_STATE_ALLOCATING; + dev->alloc_block = blk; + dev->alloc_page = c; + dev->alloc_block_finder = blk; + } else { + /* This is a partially written block that is not + * the current allocation block. + */ + + T(YAFFS_TRACE_SCAN, + (TSTR("Partially written block %d detected" TENDSTR), + blk)); + } + } + } + + dev->n_free_chunks++; + + } else if (tags.ecc_result == YAFFS_ECC_RESULT_UNFIXED) { + T(YAFFS_TRACE_SCAN, + (TSTR(" Unfixed ECC in chunk(%d:%d), chunk ignored"TENDSTR), + blk, c)); + + dev->n_free_chunks++; + + } else if (tags.obj_id > YAFFS_MAX_OBJECT_ID || + tags.chunk_id > YAFFS_MAX_CHUNK_ID || + (tags.chunk_id > 0 && tags.n_bytes > dev->data_bytes_per_chunk) || + tags.seq_number != bi->seq_number ) { + T(YAFFS_TRACE_SCAN, + (TSTR("Chunk (%d:%d) with bad tags:obj = %d, chunk_id = %d, n_bytes = %d, ignored"TENDSTR), + blk, c,tags.obj_id, tags.chunk_id, tags.n_bytes)); + + dev->n_free_chunks++; + + } else if (tags.chunk_id > 0) { + /* chunk_id > 0 so it is a data chunk... */ + unsigned int endpos; + __u32 chunkBase = + (tags.chunk_id - 1) * dev->data_bytes_per_chunk; + + foundChunksInBlock = 1; + + + yaffs_set_chunk_bit(dev, blk, c); + bi->pages_in_use++; + + in = yaffs_find_or_create_by_number(dev, + tags. + obj_id, + YAFFS_OBJECT_TYPE_FILE); + if (!in) { + /* Out of memory */ + alloc_failed = 1; + } + + if (in && + in->variant_type == YAFFS_OBJECT_TYPE_FILE + && chunkBase < in->variant.file_variant.shrink_size) { + /* This has not been invalidated by a resize */ + if (!yaffs_put_chunk_in_file(in, tags.chunk_id, chunk, -1)) { + alloc_failed = 1; + } + + /* File size is calculated by looking at the data chunks if we have not + * seen an object header yet. Stop this practice once we find an object header. + */ + endpos = chunkBase + tags.n_bytes; + + if (!in->valid && /* have not got an object header yet */ + in->variant.file_variant.scanned_size < endpos) { + in->variant.file_variant.scanned_size = endpos; + in->variant.file_variant.file_size = endpos; + } + + } else if (in) { + /* This chunk has been invalidated by a resize, or a past file deletion + * so delete the chunk*/ + yaffs_chunk_del(dev, chunk, 1, __LINE__); + + } + } else { + /* chunk_id == 0, so it is an ObjectHeader. + * Thus, we read in the object header and make the object + */ + foundChunksInBlock = 1; + + yaffs_set_chunk_bit(dev, blk, c); + bi->pages_in_use++; + + oh = NULL; + in = NULL; + + if (tags.extra_available) { + in = yaffs_find_or_create_by_number(dev, + tags.obj_id, + tags.extra_obj_type); + if (!in) + alloc_failed = 1; + } + + if (!in || + (!in->valid && dev->param.disable_lazy_load) || + tags.extra_shadows || + (!in->valid && + (tags.obj_id == YAFFS_OBJECTID_ROOT || + tags.obj_id == YAFFS_OBJECTID_LOSTNFOUND))) { + + /* If we don't have valid info then we need to read the chunk + * TODO In future we can probably defer reading the chunk and + * living with invalid data until needed. + */ + + result = yaffs_rd_chunk_tags_nand(dev, + chunk, + chunkData, + NULL); + + oh = (yaffs_obj_header *) chunkData; + + if (dev->param.inband_tags) { + /* Fix up the header if they got corrupted by inband tags */ + oh->shadows_obj = oh->inband_shadowed_obj_id; + oh->is_shrink = oh->inband_is_shrink; + } + + if (!in) { + in = yaffs_find_or_create_by_number(dev, tags.obj_id, oh->type); + if (!in) + alloc_failed = 1; + } + + } + + if (!in) { + /* TODO Hoosterman we have a problem! */ + T(YAFFS_TRACE_ERROR, + (TSTR + ("yaffs tragedy: Could not make object for object %d at chunk %d during scan" + TENDSTR), tags.obj_id, chunk)); + continue; + } + + if (in->valid) { + /* We have already filled this one. + * We have a duplicate that will be discarded, but + * we first have to suck out resize info if it is a file. + */ + + if ((in->variant_type == YAFFS_OBJECT_TYPE_FILE) && + ((oh && + oh->type == YAFFS_OBJECT_TYPE_FILE) || + (tags.extra_available && + tags.extra_obj_type == YAFFS_OBJECT_TYPE_FILE))) { + __u32 thisSize = + (oh) ? oh->file_size : tags. + extra_length; + __u32 parent_obj_id = + (oh) ? oh-> + parent_obj_id : tags. + extra_parent_id; + + + is_shrink = + (oh) ? oh->is_shrink : tags. + extra_is_shrink; + + /* If it is deleted (unlinked at start also means deleted) + * we treat the file size as being zeroed at this point. + */ + if (parent_obj_id == + YAFFS_OBJECTID_DELETED + || parent_obj_id == + YAFFS_OBJECTID_UNLINKED) { + thisSize = 0; + is_shrink = 1; + } + + if (is_shrink && in->variant.file_variant.shrink_size > thisSize) + in->variant.file_variant.shrink_size = thisSize; + + if (is_shrink) + bi->has_shrink_hdr = 1; + + } + /* Use existing - destroy this one. */ + yaffs_chunk_del(dev, chunk, 1, __LINE__); + + } + + if (!in->valid && in->variant_type != + (oh ? oh->type : tags.extra_obj_type)) + T(YAFFS_TRACE_ERROR, ( + TSTR("yaffs tragedy: Bad object type, " + TCONT("%d != %d, for object %d at chunk ") + TCONT("%d during scan") + TENDSTR), oh ? + oh->type : tags.extra_obj_type, + in->variant_type, tags.obj_id, + chunk)); + + if (!in->valid && + (tags.obj_id == YAFFS_OBJECTID_ROOT || + tags.obj_id == + YAFFS_OBJECTID_LOSTNFOUND)) { + /* We only load some info, don't fiddle with directory structure */ + in->valid = 1; + + if (oh) { + + in->yst_mode = oh->yst_mode; +#ifdef CONFIG_YAFFS_WINCE + in->win_atime[0] = oh->win_atime[0]; + in->win_ctime[0] = oh->win_ctime[0]; + in->win_mtime[0] = oh->win_mtime[0]; + in->win_atime[1] = oh->win_atime[1]; + in->win_ctime[1] = oh->win_ctime[1]; + in->win_mtime[1] = oh->win_mtime[1]; +#else + in->yst_uid = oh->yst_uid; + in->yst_gid = oh->yst_gid; + in->yst_atime = oh->yst_atime; + in->yst_mtime = oh->yst_mtime; + in->yst_ctime = oh->yst_ctime; + in->yst_rdev = oh->yst_rdev; + + in->lazy_loaded = 0; + +#endif + } else + in->lazy_loaded = 1; + + in->hdr_chunk = chunk; + + } else if (!in->valid) { + /* we need to load this info */ + + in->valid = 1; + in->hdr_chunk = chunk; + + if (oh) { + in->variant_type = oh->type; + + in->yst_mode = oh->yst_mode; +#ifdef CONFIG_YAFFS_WINCE + in->win_atime[0] = oh->win_atime[0]; + in->win_ctime[0] = oh->win_ctime[0]; + in->win_mtime[0] = oh->win_mtime[0]; + in->win_atime[1] = oh->win_atime[1]; + in->win_ctime[1] = oh->win_ctime[1]; + in->win_mtime[1] = oh->win_mtime[1]; +#else + in->yst_uid = oh->yst_uid; + in->yst_gid = oh->yst_gid; + in->yst_atime = oh->yst_atime; + in->yst_mtime = oh->yst_mtime; + in->yst_ctime = oh->yst_ctime; + in->yst_rdev = oh->yst_rdev; +#endif + + if (oh->shadows_obj > 0) + yaffs_handle_shadowed_obj(dev, + oh-> + shadows_obj, + 1); + + + + yaffs_set_obj_name_from_oh(in, oh); + parent = + yaffs_find_or_create_by_number + (dev, oh->parent_obj_id, + YAFFS_OBJECT_TYPE_DIRECTORY); + + file_size = oh->file_size; + is_shrink = oh->is_shrink; + equiv_id = oh->equiv_id; + + } else { + in->variant_type = tags.extra_obj_type; + parent = + yaffs_find_or_create_by_number + (dev, tags.extra_parent_id, + YAFFS_OBJECT_TYPE_DIRECTORY); + file_size = tags.extra_length; + is_shrink = tags.extra_is_shrink; + equiv_id = tags.extra_equiv_id; + in->lazy_loaded = 1; + + } + in->dirty = 0; + + if (!parent) + alloc_failed = 1; + + /* directory stuff... + * hook up to parent + */ + + if (parent && parent->variant_type == + YAFFS_OBJECT_TYPE_UNKNOWN) { + /* Set up as a directory */ + parent->variant_type = + YAFFS_OBJECT_TYPE_DIRECTORY; + YINIT_LIST_HEAD(&parent->variant. + dir_variant. + children); + } else if (!parent || parent->variant_type != + YAFFS_OBJECT_TYPE_DIRECTORY) { + /* Hoosterman, another problem.... + * We're trying to use a non-directory as a directory + */ + + T(YAFFS_TRACE_ERROR, + (TSTR + ("yaffs tragedy: attempting to use non-directory as a directory in scan. Put in lost+found." + TENDSTR))); + parent = dev->lost_n_found; + } + + yaffs_add_obj_to_dir(parent, in); + + itsUnlinked = (parent == dev->del_dir) || + (parent == dev->unlinked_dir); + + if (is_shrink) { + /* Mark the block as having a shrinkHeader */ + bi->has_shrink_hdr = 1; + } + + /* Note re hardlinks. + * Since we might scan a hardlink before its equivalent object is scanned + * we put them all in a list. + * After scanning is complete, we should have all the objects, so we run + * through this list and fix up all the chains. + */ + + switch (in->variant_type) { + case YAFFS_OBJECT_TYPE_UNKNOWN: + /* Todo got a problem */ + break; + case YAFFS_OBJECT_TYPE_FILE: + + if (in->variant.file_variant. + scanned_size < file_size) { + /* This covers the case where the file size is greater + * than where the data is + * This will happen if the file is resized to be larger + * than its current data extents. + */ + in->variant.file_variant.file_size = file_size; + in->variant.file_variant.scanned_size = file_size; + } + + if (in->variant.file_variant.shrink_size > file_size) + in->variant.file_variant.shrink_size = file_size; + + + break; + case YAFFS_OBJECT_TYPE_HARDLINK: + if (!itsUnlinked) { + in->variant.hardlink_variant.equiv_id = + equiv_id; + in->hard_links.next = + (struct ylist_head *) hard_list; + hard_list = in; + } + break; + case YAFFS_OBJECT_TYPE_DIRECTORY: + /* Do nothing */ + break; + case YAFFS_OBJECT_TYPE_SPECIAL: + /* Do nothing */ + break; + case YAFFS_OBJECT_TYPE_SYMLINK: + if (oh) { + in->variant.symlink_variant.alias = + yaffs_clone_str(oh->alias); + if (!in->variant.symlink_variant.alias) + alloc_failed = 1; + } + break; + } + + } + + } + + } /* End of scanning for each chunk */ + + if (state == YAFFS_BLOCK_STATE_NEEDS_SCANNING) { + /* If we got this far while scanning, then the block is fully allocated. */ + state = YAFFS_BLOCK_STATE_FULL; + } + + + bi->block_state = state; + + /* Now let's see if it was dirty */ + if (bi->pages_in_use == 0 && + !bi->has_shrink_hdr && + bi->block_state == YAFFS_BLOCK_STATE_FULL) { + yaffs_block_became_dirty(dev, blk); + } + + } + + yaffs_skip_rest_of_block(dev); + + if (altBlockIndex) + YFREE_ALT(blockIndex); + else + YFREE(blockIndex); + + /* Ok, we've done all the scanning. + * Fix up the hard link chains. + * We should now have scanned all the objects, now it's time to add these + * hardlinks. + */ + yaffs_link_fixup(dev, hard_list); + + + yaffs_release_temp_buffer(dev, chunkData, __LINE__); + + if (alloc_failed) + return YAFFS_FAIL; + + T(YAFFS_TRACE_SCAN, (TSTR("yaffs2_scan_backwards ends" TENDSTR))); + + return YAFFS_OK; +} diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_yaffs2.h b/target/linux/generic/files/fs/yaffs2/yaffs_yaffs2.h new file mode 100644 index 0000000000..e012aec5fb --- /dev/null +++ b/target/linux/generic/files/fs/yaffs2/yaffs_yaffs2.h @@ -0,0 +1,36 @@ +/* + * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. + * + * Copyright (C) 2002-2010 Aleph One Ltd. + * for Toby Churchill Ltd and Brightstar Engineering + * + * Created by Charles Manning <charles@aleph1.co.uk> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef __YAFFS_YAFFS2_H__ +#define __YAFFS_YAFFS2_H__ + +#include "yaffs_guts.h" + +void yaffs_calc_oldest_dirty_seq(yaffs_dev_t *dev); +void yaffs2_find_oldest_dirty_seq(yaffs_dev_t *dev); +void yaffs2_clear_oldest_dirty_seq(yaffs_dev_t *dev, yaffs_block_info_t *bi); +void yaffs2_update_oldest_dirty_seq(yaffs_dev_t *dev, unsigned block_no, yaffs_block_info_t *bi); +int yaffs_block_ok_for_gc(yaffs_dev_t *dev, yaffs_block_info_t *bi); +__u32 yaffs2_find_refresh_block(yaffs_dev_t *dev); +int yaffs2_checkpt_required(yaffs_dev_t *dev); +int yaffs_calc_checkpt_blocks_required(yaffs_dev_t *dev); + + +void yaffs2_checkpt_invalidate(yaffs_dev_t *dev); +int yaffs2_checkpt_save(yaffs_dev_t *dev); +int yaffs2_checkpt_restore(yaffs_dev_t *dev); + +int yaffs2_handle_hole(yaffs_obj_t *obj, loff_t new_size); +int yaffs2_scan_backwards(yaffs_dev_t *dev); + +#endif diff --git a/target/linux/generic/files/fs/yaffs2/yaffsinterface.h b/target/linux/generic/files/fs/yaffs2/yaffsinterface.h index 810837a32d..62694d8874 100644 --- a/target/linux/generic/files/fs/yaffs2/yaffsinterface.h +++ b/target/linux/generic/files/fs/yaffs2/yaffsinterface.h @@ -1,7 +1,7 @@ /* * YAFFS: Yet another Flash File System . A NAND-flash specific file system. * - * Copyright (C) 2002-2007 Aleph One Ltd. + * Copyright (C) 2002-2010 Aleph One Ltd. * for Toby Churchill Ltd and Brightstar Engineering * * Created by Charles Manning <charles@aleph1.co.uk> @@ -16,6 +16,6 @@ #ifndef __YAFFSINTERFACE_H__ #define __YAFFSINTERFACE_H__ -int yaffs_Initialise(unsigned nBlocks); +int yaffs_initialise(unsigned nBlocks); #endif diff --git a/target/linux/generic/files/fs/yaffs2/yportenv.h b/target/linux/generic/files/fs/yaffs2/yportenv.h index 28e205bbd8..2f9063bf7a 100644 --- a/target/linux/generic/files/fs/yaffs2/yportenv.h +++ b/target/linux/generic/files/fs/yaffs2/yportenv.h @@ -1,7 +1,7 @@ /* * YAFFS: Yet another Flash File System . A NAND-flash specific file system. * - * Copyright (C) 2002-2007 Aleph One Ltd. + * Copyright (C) 2002-2010 Aleph One Ltd. * for Toby Churchill Ltd and Brightstar Engineering * * Created by Charles Manning <charles@aleph1.co.uk> @@ -41,12 +41,14 @@ #if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 19)) #include <linux/config.h> #endif + #include <linux/kernel.h> #include <linux/mm.h> #include <linux/sched.h> #include <linux/string.h> #include <linux/slab.h> #include <linux/vmalloc.h> +#include <linux/xattr.h> #define YCHAR char #define YUCHAR unsigned char @@ -55,11 +57,11 @@ #define yaffs_strcpy(a, b) strcpy(a, b) #define yaffs_strncpy(a, b, c) strncpy(a, b, c) #define yaffs_strncmp(a, b, c) strncmp(a, b, c) -#define yaffs_strlen(s) strlen(s) +#define yaffs_strnlen(s,m) strnlen(s,m) #define yaffs_sprintf sprintf #define yaffs_toupper(a) toupper(a) -#define Y_INLINE inline +#define Y_INLINE __inline__ #define YAFFS_LOSTNFOUND_NAME "lost+found" #define YAFFS_LOSTNFOUND_PREFIX "obj" @@ -71,11 +73,11 @@ #define YFREE_ALT(x) vfree(x) #define YMALLOC_DMA(x) YMALLOC(x) -/* KR - added for use in scan so processes aren't blocked indefinitely. */ #define YYIELD() schedule() +#define Y_DUMP_STACK() dump_stack() -#define YAFFS_ROOT_MODE 0666 -#define YAFFS_LOSTNFOUND_MODE 0666 +#define YAFFS_ROOT_MODE 0755 +#define YAFFS_LOSTNFOUND_MODE 0700 #if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) #define Y_CURRENT_TIME CURRENT_TIME.tv_sec @@ -85,19 +87,14 @@ #define Y_TIME_CONVERT(x) (x) #endif -#define yaffs_SumCompare(x, y) ((x) == (y)) +#define yaffs_sum_cmp(x, y) ((x) == (y)) #define yaffs_strcmp(a, b) strcmp(a, b) #define TENDSTR "\n" -#define TSTR(x) KERN_WARNING x +#define TSTR(x) KERN_DEBUG x #define TCONT(x) x #define TOUT(p) printk p -#define yaffs_trace(mask, fmt, args...) \ - do { if ((mask) & (yaffs_traceMask|YAFFS_TRACE_ERROR)) \ - printk(KERN_WARNING "yaffs: " fmt, ## args); \ - } while (0) - #define compile_time_assertion(assertion) \ ({ int x = __builtin_choose_expr(assertion, 0, (void)0); (void) x; }) @@ -116,7 +113,6 @@ #include "stdio.h" #include "string.h" -#include "devextras.h" #define YMALLOC(x) malloc(x) #define YFREE(x) free(x) @@ -129,7 +125,7 @@ #define yaffs_strcat(a, b) strcat(a, b) #define yaffs_strcpy(a, b) strcpy(a, b) #define yaffs_strncpy(a, b, c) strncpy(a, b, c) -#define yaffs_strlen(s) strlen(s) +#define yaffs_strnlen(s,m) strnlen(s,m) #define yaffs_sprintf sprintf #define yaffs_toupper(a) toupper(a) @@ -146,10 +142,10 @@ #define YAFFS_LOSTNFOUND_PREFIX "obj" /* #define YPRINTF(x) printf x */ -#define YAFFS_ROOT_MODE 0666 -#define YAFFS_LOSTNFOUND_MODE 0666 +#define YAFFS_ROOT_MODE 0755 +#define YAFFS_LOSTNFOUND_MODE 0700 -#define yaffs_SumCompare(x, y) ((x) == (y)) +#define yaffs_sum_cmp(x, y) ((x) == (y)) #define yaffs_strcmp(a, b) strcmp(a, b) #else @@ -158,46 +154,180 @@ #endif -/* see yaffs_fs.c */ -extern unsigned int yaffs_traceMask; -extern unsigned int yaffs_wr_attempts; +#if defined(CONFIG_YAFFS_DIRECT) || defined(CONFIG_YAFFS_WINCE) -/* - * Tracing flags. - * The flags masked in YAFFS_TRACE_ALWAYS are always traced. - */ +#ifdef CONFIG_YAFFSFS_PROVIDE_VALUES -#define YAFFS_TRACE_OS 0x00000002 -#define YAFFS_TRACE_ALLOCATE 0x00000004 -#define YAFFS_TRACE_SCAN 0x00000008 -#define YAFFS_TRACE_BAD_BLOCKS 0x00000010 -#define YAFFS_TRACE_ERASE 0x00000020 -#define YAFFS_TRACE_GC 0x00000040 -#define YAFFS_TRACE_WRITE 0x00000080 -#define YAFFS_TRACE_TRACING 0x00000100 -#define YAFFS_TRACE_DELETION 0x00000200 -#define YAFFS_TRACE_BUFFERS 0x00000400 -#define YAFFS_TRACE_NANDACCESS 0x00000800 -#define YAFFS_TRACE_GC_DETAIL 0x00001000 -#define YAFFS_TRACE_SCAN_DEBUG 0x00002000 -#define YAFFS_TRACE_MTD 0x00004000 -#define YAFFS_TRACE_CHECKPOINT 0x00008000 +#ifndef O_RDONLY +#define O_RDONLY 00 +#endif -#define YAFFS_TRACE_VERIFY 0x00010000 -#define YAFFS_TRACE_VERIFY_NAND 0x00020000 -#define YAFFS_TRACE_VERIFY_FULL 0x00040000 -#define YAFFS_TRACE_VERIFY_ALL 0x000F0000 +#ifndef O_WRONLY +#define O_WRONLY 01 +#endif +#ifndef O_RDWR +#define O_RDWR 02 +#endif -#define YAFFS_TRACE_ERROR 0x40000000 -#define YAFFS_TRACE_BUG 0x80000000 -#define YAFFS_TRACE_ALWAYS 0xF0000000 +#ifndef O_CREAT +#define O_CREAT 0100 +#endif +#ifndef O_EXCL +#define O_EXCL 0200 +#endif -#define T(mask, p) do { if ((mask) & (yaffs_traceMask | YAFFS_TRACE_ALWAYS)) TOUT(p); } while (0) +#ifndef O_TRUNC +#define O_TRUNC 01000 +#endif + +#ifndef O_APPEND +#define O_APPEND 02000 +#endif + +#ifndef SEEK_SET +#define SEEK_SET 0 +#endif + +#ifndef SEEK_CUR +#define SEEK_CUR 1 +#endif + +#ifndef SEEK_END +#define SEEK_END 2 +#endif + +#ifndef EBUSY +#define EBUSY 16 +#endif + +#ifndef ENODEV +#define ENODEV 19 +#endif + +#ifndef EINVAL +#define EINVAL 22 +#endif + +#ifndef EBADF +#define EBADF 9 +#endif + +#ifndef EACCES +#define EACCES 13 +#endif + +#ifndef EXDEV +#define EXDEV 18 +#endif + +#ifndef ENOENT +#define ENOENT 2 +#endif + +#ifndef ENOSPC +#define ENOSPC 28 +#endif + +#ifndef ERANGE +#define ERANGE 34 +#endif + +#ifndef ENODATA +#define ENODATA 61 +#endif + +#ifndef ENOTEMPTY +#define ENOTEMPTY 39 +#endif + +#ifndef ENAMETOOLONG +#define ENAMETOOLONG 36 +#endif + +#ifndef ENOMEM +#define ENOMEM 12 +#endif + +#ifndef EEXIST +#define EEXIST 17 +#endif + +#ifndef ENOTDIR +#define ENOTDIR 20 +#endif + +#ifndef EISDIR +#define EISDIR 21 +#endif + + +// Mode flags + +#ifndef S_IFMT +#define S_IFMT 0170000 +#endif + +#ifndef S_IFLNK +#define S_IFLNK 0120000 +#endif + +#ifndef S_IFDIR +#define S_IFDIR 0040000 +#endif + +#ifndef S_IFREG +#define S_IFREG 0100000 +#endif + +#ifndef S_IREAD +#define S_IREAD 0000400 +#endif + +#ifndef S_IWRITE +#define S_IWRITE 0000200 +#endif + +#ifndef S_IEXEC +#define S_IEXEC 0000100 +#endif + +#ifndef XATTR_CREATE +#define XATTR_CREATE 1 +#endif + +#ifndef XATTR_REPLACE +#define XATTR_REPLACE 2 +#endif + +#ifndef R_OK +#define R_OK 4 +#define W_OK 2 +#define X_OK 1 +#define F_OK 0 +#endif + +#else +#include <errno.h> +#include <sys/stat.h> +#include <fcntl.h> +#endif + +#endif + +#ifndef Y_DUMP_STACK +#define Y_DUMP_STACK() do { } while (0) +#endif #ifndef YBUG -#define YBUG() do {T(YAFFS_TRACE_BUG, (TSTR("==>> yaffs bug: " __FILE__ " %d" TENDSTR), __LINE__)); } while (0) +#define YBUG() do {\ + T(YAFFS_TRACE_BUG,\ + (TSTR("==>> yaffs bug: " __FILE__ " %d" TENDSTR),\ + __LINE__));\ + Y_DUMP_STACK();\ +} while (0) #endif + #endif diff --git a/target/linux/generic/patches-3.3/502-yaffs_git_2010_10_20.patch b/target/linux/generic/patches-3.3/502-yaffs_git_2010_10_20.patch deleted file mode 100644 index f4535a6b51..0000000000 --- a/target/linux/generic/patches-3.3/502-yaffs_git_2010_10_20.patch +++ /dev/null @@ -1,27068 +0,0 @@ ---- a/fs/Kconfig -+++ b/fs/Kconfig -@@ -35,7 +35,6 @@ source "fs/gfs2/Kconfig" - source "fs/ocfs2/Kconfig" - source "fs/btrfs/Kconfig" - source "fs/nilfs2/Kconfig" --source "fs/yaffs2/Kconfig" - - endif # BLOCK - -@@ -201,6 +200,10 @@ source "fs/hfsplus/Kconfig" - source "fs/befs/Kconfig" - source "fs/bfs/Kconfig" - source "fs/efs/Kconfig" -+ -+# Patched by YAFFS -+source "fs/yaffs2/Kconfig" -+ - source "fs/jffs2/Kconfig" - # UBIFS File system configuration - source "fs/ubifs/Kconfig" ---- a/fs/Makefile -+++ b/fs/Makefile -@@ -125,5 +125,6 @@ obj-$(CONFIG_GFS2_FS) += gfs2/ - obj-y += exofs/ # Multiple modules - obj-$(CONFIG_CEPH_FS) += ceph/ - obj-$(CONFIG_PSTORE) += pstore/ --obj-$(CONFIG_YAFFS_FS) += yaffs2/ - -+# Patched by YAFFS -+obj-$(CONFIG_YAFFS_FS) += yaffs2/ ---- a/fs/yaffs2/devextras.h -+++ b/fs/yaffs2/devextras.h -@@ -1,7 +1,7 @@ - /* - * YAFFS: Yet another Flash File System . A NAND-flash specific file system. - * -- * Copyright (C) 2002-2007 Aleph One Ltd. -+ * Copyright (C) 2002-2010 Aleph One Ltd. - * for Toby Churchill Ltd and Brightstar Engineering - * - * Created by Charles Manning <charles@aleph1.co.uk> -@@ -24,6 +24,8 @@ - #define __EXTRAS_H__ - - -+#include "yportenv.h" -+ - #if !(defined __KERNEL__) - - /* Definition of types */ -@@ -33,103 +35,6 @@ typedef unsigned __u32; - - #endif - --/* -- * This is a simple doubly linked list implementation that matches the -- * way the Linux kernel doubly linked list implementation works. -- */ -- --struct ylist_head { -- struct ylist_head *next; /* next in chain */ -- struct ylist_head *prev; /* previous in chain */ --}; -- -- --/* Initialise a static list */ --#define YLIST_HEAD(name) \ --struct ylist_head name = { &(name), &(name)} -- -- -- --/* Initialise a list head to an empty list */ --#define YINIT_LIST_HEAD(p) \ --do { \ -- (p)->next = (p);\ -- (p)->prev = (p); \ --} while (0) -- -- --/* Add an element to a list */ --static __inline__ void ylist_add(struct ylist_head *newEntry, -- struct ylist_head *list) --{ -- struct ylist_head *listNext = list->next; -- -- list->next = newEntry; -- newEntry->prev = list; -- newEntry->next = listNext; -- listNext->prev = newEntry; -- --} -- --static __inline__ void ylist_add_tail(struct ylist_head *newEntry, -- struct ylist_head *list) --{ -- struct ylist_head *listPrev = list->prev; -- -- list->prev = newEntry; -- newEntry->next = list; -- newEntry->prev = listPrev; -- listPrev->next = newEntry; -- --} -- -- --/* Take an element out of its current list, with or without -- * reinitialising the links.of the entry*/ --static __inline__ void ylist_del(struct ylist_head *entry) --{ -- struct ylist_head *listNext = entry->next; -- struct ylist_head *listPrev = entry->prev; -- -- listNext->prev = listPrev; -- listPrev->next = listNext; -- --} -- --static __inline__ void ylist_del_init(struct ylist_head *entry) --{ -- ylist_del(entry); -- entry->next = entry->prev = entry; --} -- -- --/* Test if the list is empty */ --static __inline__ int ylist_empty(struct ylist_head *entry) --{ -- return (entry->next == entry); --} -- -- --/* ylist_entry takes a pointer to a list entry and offsets it to that -- * we can find a pointer to the object it is embedded in. -- */ -- -- --#define ylist_entry(entry, type, member) \ -- ((type *)((char *)(entry)-(unsigned long)(&((type *)NULL)->member))) -- -- --/* ylist_for_each and list_for_each_safe iterate over lists. -- * ylist_for_each_safe uses temporary storage to make the list delete safe -- */ -- --#define ylist_for_each(itervar, list) \ -- for (itervar = (list)->next; itervar != (list); itervar = itervar->next) -- --#define ylist_for_each_safe(itervar, saveVar, list) \ -- for (itervar = (list)->next, saveVar = (list)->next->next; \ -- itervar != (list); itervar = saveVar, saveVar = saveVar->next) -- - - #if !(defined __KERNEL__) - ---- a/fs/yaffs2/Kconfig -+++ b/fs/yaffs2/Kconfig -@@ -90,23 +90,15 @@ config YAFFS_AUTO_YAFFS2 - - If unsure, say Y. - --config YAFFS_DISABLE_LAZY_LOAD -- bool "Disable lazy loading" -- depends on YAFFS_YAFFS2 -+config YAFFS_DISABLE_TAGS_ECC -+ bool "Disable YAFFS from doing ECC on tags by default" -+ depends on YAFFS_FS && YAFFS_YAFFS2 - default n - help -- "Lazy loading" defers loading file details until they are -- required. This saves mount time, but makes the first look-up -- a bit longer. -- -- Lazy loading will only happen if enabled by this option being 'n' -- and if the appropriate tags are available, else yaffs2 will -- automatically fall back to immediate loading and do the right -- thing. -- -- Lazy laoding will be required by checkpointing. -- -- Setting this to 'y' will disable lazy loading. -+ This defaults Yaffs to using its own ECC calculations on tags instead of -+ just relying on the MTD. -+ This behavior can also be overridden with tags_ecc_on and -+ tags_ecc_off mount options. - - If unsure, say N. - -@@ -154,3 +146,45 @@ config YAFFS_SHORT_NAMES_IN_RAM - but makes look-ups faster. - - If unsure, say Y. -+ -+config YAFFS_EMPTY_LOST_AND_FOUND -+ bool "Empty lost and found on boot" -+ depends on YAFFS_FS -+ default n -+ help -+ If this is enabled then the contents of lost and found is -+ automatically dumped at mount. -+ -+ If unsure, say N. -+ -+config YAFFS_DISABLE_BLOCK_REFRESHING -+ bool "Disable yaffs2 block refreshing" -+ depends on YAFFS_FS -+ default n -+ help -+ If this is set, then block refreshing is disabled. -+ Block refreshing infrequently refreshes the oldest block in -+ a yaffs2 file system. This mechanism helps to refresh flash to -+ mitigate against data loss. This is particularly useful for MLC. -+ -+ If unsure, say N. -+ -+config YAFFS_DISABLE_BACKGROUND -+ bool "Disable yaffs2 background processing" -+ depends on YAFFS_FS -+ default n -+ help -+ If this is set, then background processing is disabled. -+ Background processing makes many foreground activities faster. -+ -+ If unsure, say N. -+ -+config YAFFS_XATTR -+ bool "Enable yaffs2 xattr support" -+ depends on YAFFS_FS -+ default y -+ help -+ If this is set then yaffs2 will provide xattr support. -+ If unsure, say Y. -+ -+ ---- a/fs/yaffs2/Makefile -+++ b/fs/yaffs2/Makefile -@@ -4,7 +4,14 @@ - - obj-$(CONFIG_YAFFS_FS) += yaffs.o - --yaffs-y := yaffs_ecc.o yaffs_fs.o yaffs_guts.o yaffs_checkptrw.o --yaffs-y += yaffs_packedtags1.o yaffs_packedtags2.o yaffs_nand.o yaffs_qsort.o -+yaffs-y := yaffs_ecc.o yaffs_vfs_glue.o yaffs_guts.o yaffs_checkptrw.o -+yaffs-y += yaffs_packedtags1.o yaffs_packedtags2.o yaffs_nand.o - yaffs-y += yaffs_tagscompat.o yaffs_tagsvalidity.o - yaffs-y += yaffs_mtdif.o yaffs_mtdif1.o yaffs_mtdif2.o -+yaffs-y += yaffs_nameval.o -+yaffs-y += yaffs_allocator.o -+yaffs-y += yaffs_yaffs1.o -+yaffs-y += yaffs_yaffs2.o -+yaffs-y += yaffs_bitmap.o -+yaffs-y += yaffs_verify.o -+ ---- a/fs/yaffs2/moduleconfig.h -+++ b/fs/yaffs2/moduleconfig.h -@@ -1,7 +1,7 @@ - /* - * YAFFS: Yet another Flash File System . A NAND-flash specific file system. - * -- * Copyright (C) 2002-2007 Aleph One Ltd. -+ * Copyright (C) 2002-2010 Aleph One Ltd. - * for Toby Churchill Ltd and Brightstar Engineering - * - * Created by Martin Fouts <Martin.Fouts@palmsource.com> -@@ -29,25 +29,46 @@ - /* Meaning: Yaffs does its own ECC, rather than using MTD ECC */ - /* #define CONFIG_YAFFS_DOES_ECC */ - -+/* Default: Selected */ -+/* Meaning: Yaffs does its own ECC on tags for packed tags rather than use mtd */ -+#define CONFIG_YAFFS_DOES_TAGS_ECC -+ - /* Default: Not selected */ - /* Meaning: ECC byte order is 'wrong'. Only meaningful if */ - /* CONFIG_YAFFS_DOES_ECC is set */ - /* #define CONFIG_YAFFS_ECC_WRONG_ORDER */ - --/* Default: Selected */ --/* Meaning: Disables testing whether chunks are erased before writing to them*/ --#define CONFIG_YAFFS_DISABLE_CHUNK_ERASED_CHECK -+/* Default: Not selected */ -+/* Meaning: Always test whether chunks are erased before writing to them. -+ Use during mtd debugging and init. */ -+/* #define CONFIG_YAFFS_ALWAYS_CHECK_CHUNK_ERASED */ -+ -+/* Default: Not Selected */ -+/* Meaning: At mount automatically empty all files from lost and found. */ -+/* This is done to fix an old problem where rmdir was not checking for an */ -+/* empty directory. This can also be achieved with a mount option. */ -+#define CONFIG_YAFFS_EMPTY_LOST_AND_FOUND - - /* Default: Selected */ - /* Meaning: Cache short names, taking more RAM, but faster look-ups */ - #define CONFIG_YAFFS_SHORT_NAMES_IN_RAM - --/* Default: 10 */ --/* Meaning: set the count of blocks to reserve for checkpointing */ --#define CONFIG_YAFFS_CHECKPOINT_RESERVED_BLOCKS 10 -+/* Default: Unselected */ -+/* Meaning: Select to disable block refreshing. */ -+/* Block Refreshing periodically rewrites the oldest block. */ -+/* #define CONFIG_DISABLE_BLOCK_REFRESHING */ -+ -+/* Default: Unselected */ -+/* Meaning: Select to disable background processing */ -+/* #define CONFIG_DISABLE_BACKGROUND */ -+ -+ -+/* Default: Selected */ -+/* Meaning: Enable XATTR support */ -+#define CONFIG_YAFFS_XATTR - - /* --Older-style on-NAND data format has a "pageStatus" byte to record -+Older-style on-NAND data format has a "page_status" byte to record - chunk/page state. This byte is zeroed when the page is discarded. - Choose this option if you have existing on-NAND data in this format - that you need to continue to support. New data written also uses the -@@ -57,7 +78,7 @@ adjusted to use the older-style format. - MTD versions in yaffs_mtdif1.c. - */ - /* Default: Not selected */ --/* Meaning: Use older-style on-NAND data format with pageStatus byte */ -+/* Meaning: Use older-style on-NAND data format with page_status byte */ - /* #define CONFIG_YAFFS_9BYTE_TAGS */ - - #endif /* YAFFS_OUT_OF_TREE */ ---- /dev/null -+++ b/fs/yaffs2/yaffs_allocator.c -@@ -0,0 +1,409 @@ -+/* -+ * YAFFS: Yet another Flash File System . A NAND-flash specific file system. -+ * -+ * Copyright (C) 2002-2010 Aleph One Ltd. -+ * for Toby Churchill Ltd and Brightstar Engineering -+ * -+ * Created by Charles Manning <charles@aleph1.co.uk> -+ * -+ * This program is free software; you can redistribute it and/or modify -+ * it under the terms of the GNU Lesser General Public License version 2.1 as -+ * published by the Free Software Foundation. -+ * -+ * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL. -+ */ -+ -+ -+#include "yaffs_allocator.h" -+#include "yaffs_guts.h" -+#include "yaffs_trace.h" -+#include "yportenv.h" -+ -+#ifdef CONFIG_YAFFS_YMALLOC_ALLOCATOR -+ -+void yaffs_deinit_raw_tnodes_and_objs(yaffs_dev_t *dev) -+{ -+ dev = dev; -+} -+ -+void yaffs_init_raw_tnodes_and_objs(yaffs_dev_t *dev) -+{ -+ dev = dev; -+} -+ -+yaffs_tnode_t *yaffs_alloc_raw_tnode(yaffs_dev_t *dev) -+{ -+ return (yaffs_tnode_t *)YMALLOC(dev->tnode_size); -+} -+ -+void yaffs_free_raw_tnode(yaffs_dev_t *dev, yaffs_tnode_t *tn) -+{ -+ dev = dev; -+ YFREE(tn); -+} -+ -+void yaffs_init_raw_objs(yaffs_dev_t *dev) -+{ -+ dev = dev; -+} -+ -+void yaffs_deinit_raw_objs(yaffs_dev_t *dev) -+{ -+ dev = dev; -+} -+ -+yaffs_obj_t *yaffs_alloc_raw_obj(yaffs_dev_t *dev) -+{ -+ dev = dev; -+ return (yaffs_obj_t *) YMALLOC(sizeof(yaffs_obj_t)); -+} -+ -+ -+void yaffs_free_raw_obj(yaffs_dev_t *dev, yaffs_obj_t *obj) -+{ -+ -+ dev = dev; -+ YFREE(obj); -+} -+ -+#else -+ -+struct yaffs_tnode_list { -+ struct yaffs_tnode_list *next; -+ yaffs_tnode_t *tnodes; -+}; -+ -+typedef struct yaffs_tnode_list yaffs_tnodelist_t; -+ -+struct yaffs_obj_tList_struct { -+ yaffs_obj_t *objects; -+ struct yaffs_obj_tList_struct *next; -+}; -+ -+typedef struct yaffs_obj_tList_struct yaffs_obj_tList; -+ -+ -+struct yaffs_AllocatorStruct { -+ int n_tnodesCreated; -+ yaffs_tnode_t *freeTnodes; -+ int nFreeTnodes; -+ yaffs_tnodelist_t *allocatedTnodeList; -+ -+ int n_objCreated; -+ yaffs_obj_t *freeObjects; -+ int nFreeObjects; -+ -+ yaffs_obj_tList *allocatedObjectList; -+}; -+ -+typedef struct yaffs_AllocatorStruct yaffs_Allocator; -+ -+ -+static void yaffs_deinit_raw_tnodes(yaffs_dev_t *dev) -+{ -+ -+ yaffs_Allocator *allocator = (yaffs_Allocator *)dev->allocator; -+ -+ yaffs_tnodelist_t *tmp; -+ -+ if(!allocator){ -+ YBUG(); -+ return; -+ } -+ -+ while (allocator->allocatedTnodeList) { -+ tmp = allocator->allocatedTnodeList->next; -+ -+ YFREE(allocator->allocatedTnodeList->tnodes); -+ YFREE(allocator->allocatedTnodeList); -+ allocator->allocatedTnodeList = tmp; -+ -+ } -+ -+ allocator->freeTnodes = NULL; -+ allocator->nFreeTnodes = 0; -+ allocator->n_tnodesCreated = 0; -+} -+ -+static void yaffs_init_raw_tnodes(yaffs_dev_t *dev) -+{ -+ yaffs_Allocator *allocator = dev->allocator; -+ -+ if(allocator){ -+ allocator->allocatedTnodeList = NULL; -+ allocator->freeTnodes = NULL; -+ allocator->nFreeTnodes = 0; -+ allocator->n_tnodesCreated = 0; -+ } else -+ YBUG(); -+} -+ -+static int yaffs_create_tnodes(yaffs_dev_t *dev, int n_tnodes) -+{ -+ yaffs_Allocator *allocator = (yaffs_Allocator *)dev->allocator; -+ int i; -+ yaffs_tnode_t *newTnodes; -+ __u8 *mem; -+ yaffs_tnode_t *curr; -+ yaffs_tnode_t *next; -+ yaffs_tnodelist_t *tnl; -+ -+ if(!allocator){ -+ YBUG(); -+ return YAFFS_FAIL; -+ } -+ -+ if (n_tnodes < 1) -+ return YAFFS_OK; -+ -+ -+ /* make these things */ -+ -+ newTnodes = YMALLOC(n_tnodes * dev->tnode_size); -+ mem = (__u8 *)newTnodes; -+ -+ if (!newTnodes) { -+ T(YAFFS_TRACE_ERROR, -+ (TSTR("yaffs: Could not allocate Tnodes" TENDSTR))); -+ return YAFFS_FAIL; -+ } -+ -+ /* New hookup for wide tnodes */ -+ for (i = 0; i < n_tnodes - 1; i++) { -+ curr = (yaffs_tnode_t *) &mem[i * dev->tnode_size]; -+ next = (yaffs_tnode_t *) &mem[(i+1) * dev->tnode_size]; -+ curr->internal[0] = next; -+ } -+ -+ curr = (yaffs_tnode_t *) &mem[(n_tnodes - 1) * dev->tnode_size]; -+ curr->internal[0] = allocator->freeTnodes; -+ allocator->freeTnodes = (yaffs_tnode_t *)mem; -+ -+ allocator->nFreeTnodes += n_tnodes; -+ allocator->n_tnodesCreated += n_tnodes; -+ -+ /* Now add this bunch of tnodes to a list for freeing up. -+ * NB If we can't add this to the management list it isn't fatal -+ * but it just means we can't free this bunch of tnodes later. -+ */ -+ -+ tnl = YMALLOC(sizeof(yaffs_tnodelist_t)); -+ if (!tnl) { -+ T(YAFFS_TRACE_ERROR, -+ (TSTR -+ ("yaffs: Could not add tnodes to management list" TENDSTR))); -+ return YAFFS_FAIL; -+ } else { -+ tnl->tnodes = newTnodes; -+ tnl->next = allocator->allocatedTnodeList; -+ allocator->allocatedTnodeList = tnl; -+ } -+ -+ T(YAFFS_TRACE_ALLOCATE, (TSTR("yaffs: Tnodes added" TENDSTR))); -+ -+ return YAFFS_OK; -+} -+ -+ -+yaffs_tnode_t *yaffs_alloc_raw_tnode(yaffs_dev_t *dev) -+{ -+ yaffs_Allocator *allocator = (yaffs_Allocator *)dev->allocator; -+ yaffs_tnode_t *tn = NULL; -+ -+ if(!allocator){ -+ YBUG(); -+ return NULL; -+ } -+ -+ /* If there are none left make more */ -+ if (!allocator->freeTnodes) -+ yaffs_create_tnodes(dev, YAFFS_ALLOCATION_NTNODES); -+ -+ if (allocator->freeTnodes) { -+ tn = allocator->freeTnodes; -+ allocator->freeTnodes = allocator->freeTnodes->internal[0]; -+ allocator->nFreeTnodes--; -+ } -+ -+ return tn; -+} -+ -+/* FreeTnode frees up a tnode and puts it back on the free list */ -+void yaffs_free_raw_tnode(yaffs_dev_t *dev, yaffs_tnode_t *tn) -+{ -+ yaffs_Allocator *allocator = dev->allocator; -+ -+ if(!allocator){ -+ YBUG(); -+ return; -+ } -+ -+ if (tn) { -+ tn->internal[0] = allocator->freeTnodes; -+ allocator->freeTnodes = tn; -+ allocator->nFreeTnodes++; -+ } -+ dev->checkpoint_blocks_required = 0; /* force recalculation*/ -+} -+ -+ -+ -+static void yaffs_init_raw_objs(yaffs_dev_t *dev) -+{ -+ yaffs_Allocator *allocator = dev->allocator; -+ -+ if(allocator) { -+ allocator->allocatedObjectList = NULL; -+ allocator->freeObjects = NULL; -+ allocator->nFreeObjects = 0; -+ } else -+ YBUG(); -+} -+ -+static void yaffs_deinit_raw_objs(yaffs_dev_t *dev) -+{ -+ yaffs_Allocator *allocator = dev->allocator; -+ yaffs_obj_tList *tmp; -+ -+ if(!allocator){ -+ YBUG(); -+ return; -+ } -+ -+ while (allocator->allocatedObjectList) { -+ tmp = allocator->allocatedObjectList->next; -+ YFREE(allocator->allocatedObjectList->objects); -+ YFREE(allocator->allocatedObjectList); -+ -+ allocator->allocatedObjectList = tmp; -+ } -+ -+ allocator->freeObjects = NULL; -+ allocator->nFreeObjects = 0; -+ allocator->n_objCreated = 0; -+} -+ -+ -+static int yaffs_create_free_objs(yaffs_dev_t *dev, int n_obj) -+{ -+ yaffs_Allocator *allocator = dev->allocator; -+ -+ int i; -+ yaffs_obj_t *newObjects; -+ yaffs_obj_tList *list; -+ -+ if(!allocator){ -+ YBUG(); -+ return YAFFS_FAIL; -+ } -+ -+ if (n_obj < 1) -+ return YAFFS_OK; -+ -+ /* make these things */ -+ newObjects = YMALLOC(n_obj * sizeof(yaffs_obj_t)); -+ list = YMALLOC(sizeof(yaffs_obj_tList)); -+ -+ if (!newObjects || !list) { -+ if (newObjects){ -+ YFREE(newObjects); -+ newObjects = NULL; -+ } -+ if (list){ -+ YFREE(list); -+ list = NULL; -+ } -+ T(YAFFS_TRACE_ALLOCATE, -+ (TSTR("yaffs: Could not allocate more objects" TENDSTR))); -+ return YAFFS_FAIL; -+ } -+ -+ /* Hook them into the free list */ -+ for (i = 0; i < n_obj - 1; i++) { -+ newObjects[i].siblings.next = -+ (struct ylist_head *)(&newObjects[i + 1]); -+ } -+ -+ newObjects[n_obj - 1].siblings.next = (void *)allocator->freeObjects; -+ allocator->freeObjects = newObjects; -+ allocator->nFreeObjects += n_obj; -+ allocator->n_objCreated += n_obj; -+ -+ /* Now add this bunch of Objects to a list for freeing up. */ -+ -+ list->objects = newObjects; -+ list->next = allocator->allocatedObjectList; -+ allocator->allocatedObjectList = list; -+ -+ return YAFFS_OK; -+} -+ -+yaffs_obj_t *yaffs_alloc_raw_obj(yaffs_dev_t *dev) -+{ -+ yaffs_obj_t *obj = NULL; -+ yaffs_Allocator *allocator = dev->allocator; -+ -+ if(!allocator) { -+ YBUG(); -+ return obj; -+ } -+ -+ /* If there are none left make more */ -+ if (!allocator->freeObjects) -+ yaffs_create_free_objs(dev, YAFFS_ALLOCATION_NOBJECTS); -+ -+ if (allocator->freeObjects) { -+ obj = allocator->freeObjects; -+ allocator->freeObjects = -+ (yaffs_obj_t *) (allocator->freeObjects->siblings.next); -+ allocator->nFreeObjects--; -+ } -+ -+ return obj; -+} -+ -+ -+void yaffs_free_raw_obj(yaffs_dev_t *dev, yaffs_obj_t *obj) -+{ -+ -+ yaffs_Allocator *allocator = dev->allocator; -+ -+ if(!allocator) -+ YBUG(); -+ else { -+ /* Link into the free list. */ -+ obj->siblings.next = (struct ylist_head *)(allocator->freeObjects); -+ allocator->freeObjects = obj; -+ allocator->nFreeObjects++; -+ } -+} -+ -+void yaffs_deinit_raw_tnodes_and_objs(yaffs_dev_t *dev) -+{ -+ if(dev->allocator){ -+ yaffs_deinit_raw_tnodes(dev); -+ yaffs_deinit_raw_objs(dev); -+ -+ YFREE(dev->allocator); -+ dev->allocator=NULL; -+ } else -+ YBUG(); -+} -+ -+void yaffs_init_raw_tnodes_and_objs(yaffs_dev_t *dev) -+{ -+ yaffs_Allocator *allocator; -+ -+ if(!dev->allocator){ -+ allocator = YMALLOC(sizeof(yaffs_Allocator)); -+ if(allocator){ -+ dev->allocator = allocator; -+ yaffs_init_raw_tnodes(dev); -+ yaffs_init_raw_objs(dev); -+ } -+ } else -+ YBUG(); -+} -+ -+ -+#endif ---- /dev/null -+++ b/fs/yaffs2/yaffs_allocator.h -@@ -0,0 +1,30 @@ -+/* -+ * YAFFS: Yet another Flash File System . A NAND-flash specific file system. -+ * -+ * Copyright (C) 2002-2010 Aleph One Ltd. -+ * for Toby Churchill Ltd and Brightstar Engineering -+ * -+ * Created by Charles Manning <charles@aleph1.co.uk> -+ * -+ * This program is free software; you can redistribute it and/or modify -+ * it under the terms of the GNU Lesser General Public License version 2.1 as -+ * published by the Free Software Foundation. -+ * -+ * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL. -+ */ -+ -+#ifndef __YAFFS_ALLOCATOR_H__ -+#define __YAFFS_ALLOCATOR_H__ -+ -+#include "yaffs_guts.h" -+ -+void yaffs_init_raw_tnodes_and_objs(yaffs_dev_t *dev); -+void yaffs_deinit_raw_tnodes_and_objs(yaffs_dev_t *dev); -+ -+yaffs_tnode_t *yaffs_alloc_raw_tnode(yaffs_dev_t *dev); -+void yaffs_free_raw_tnode(yaffs_dev_t *dev, yaffs_tnode_t *tn); -+ -+yaffs_obj_t *yaffs_alloc_raw_obj(yaffs_dev_t *dev); -+void yaffs_free_raw_obj(yaffs_dev_t *dev, yaffs_obj_t *obj); -+ -+#endif ---- /dev/null -+++ b/fs/yaffs2/yaffs_bitmap.c -@@ -0,0 +1,105 @@ -+/* -+ * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. -+ * -+ * Copyright (C) 2002-2010 Aleph One Ltd. -+ * for Toby Churchill Ltd and Brightstar Engineering -+ * -+ * Created by Charles Manning <charles@aleph1.co.uk> -+ * -+ * This program is free software; you can redistribute it and/or modify -+ * it under the terms of the GNU General Public License version 2 as -+ * published by the Free Software Foundation. -+ */ -+ -+#include "yaffs_bitmap.h" -+#include "yaffs_trace.h" -+/* -+ * Chunk bitmap manipulations -+ */ -+ -+static Y_INLINE __u8 *yaffs_BlockBits(yaffs_dev_t *dev, int blk) -+{ -+ if (blk < dev->internal_start_block || blk > dev->internal_end_block) { -+ T(YAFFS_TRACE_ERROR, -+ (TSTR("**>> yaffs: BlockBits block %d is not valid" TENDSTR), -+ blk)); -+ YBUG(); -+ } -+ return dev->chunk_bits + -+ (dev->chunk_bit_stride * (blk - dev->internal_start_block)); -+} -+ -+void yaffs_verify_chunk_bit_id(yaffs_dev_t *dev, int blk, int chunk) -+{ -+ if (blk < dev->internal_start_block || blk > dev->internal_end_block || -+ chunk < 0 || chunk >= dev->param.chunks_per_block) { -+ T(YAFFS_TRACE_ERROR, -+ (TSTR("**>> yaffs: Chunk Id (%d:%d) invalid"TENDSTR), -+ blk, chunk)); -+ YBUG(); -+ } -+} -+ -+void yaffs_clear_chunk_bits(yaffs_dev_t *dev, int blk) -+{ -+ __u8 *blkBits = yaffs_BlockBits(dev, blk); -+ -+ memset(blkBits, 0, dev->chunk_bit_stride); -+} -+ -+void yaffs_clear_chunk_bit(yaffs_dev_t *dev, int blk, int chunk) -+{ -+ __u8 *blkBits = yaffs_BlockBits(dev, blk); -+ -+ yaffs_verify_chunk_bit_id(dev, blk, chunk); -+ -+ blkBits[chunk / 8] &= ~(1 << (chunk & 7)); -+} -+ -+void yaffs_set_chunk_bit(yaffs_dev_t *dev, int blk, int chunk) -+{ -+ __u8 *blkBits = yaffs_BlockBits(dev, blk); -+ -+ yaffs_verify_chunk_bit_id(dev, blk, chunk); -+ -+ blkBits[chunk / 8] |= (1 << (chunk & 7)); -+} -+ -+int yaffs_check_chunk_bit(yaffs_dev_t *dev, int blk, int chunk) -+{ -+ __u8 *blkBits = yaffs_BlockBits(dev, blk); -+ yaffs_verify_chunk_bit_id(dev, blk, chunk); -+ -+ return (blkBits[chunk / 8] & (1 << (chunk & 7))) ? 1 : 0; -+} -+ -+int yaffs_still_some_chunks(yaffs_dev_t *dev, int blk) -+{ -+ __u8 *blkBits = yaffs_BlockBits(dev, blk); -+ int i; -+ for (i = 0; i < dev->chunk_bit_stride; i++) { -+ if (*blkBits) -+ return 1; -+ blkBits++; -+ } -+ return 0; -+} -+ -+int yaffs_count_chunk_bits(yaffs_dev_t *dev, int blk) -+{ -+ __u8 *blkBits = yaffs_BlockBits(dev, blk); -+ int i; -+ int n = 0; -+ for (i = 0; i < dev->chunk_bit_stride; i++) { -+ __u8 x = *blkBits; -+ while (x) { -+ if (x & 1) -+ n++; -+ x >>= 1; -+ } -+ -+ blkBits++; -+ } -+ return n; -+} -+ ---- /dev/null -+++ b/fs/yaffs2/yaffs_bitmap.h -@@ -0,0 +1,31 @@ -+/* -+ * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. -+ * -+ * Copyright (C) 2002-2010 Aleph One Ltd. -+ * for Toby Churchill Ltd and Brightstar Engineering -+ * -+ * Created by Charles Manning <charles@aleph1.co.uk> -+ * -+ * This program is free software; you can redistribute it and/or modify -+ * it under the terms of the GNU General Public License version 2 as -+ * published by the Free Software Foundation. -+ */ -+ -+/* -+ * Chunk bitmap manipulations -+ */ -+ -+#ifndef __YAFFS_BITMAP_H__ -+#define __YAFFS_BITMAP_H__ -+ -+#include "yaffs_guts.h" -+ -+void yaffs_verify_chunk_bit_id(yaffs_dev_t *dev, int blk, int chunk); -+void yaffs_clear_chunk_bits(yaffs_dev_t *dev, int blk); -+void yaffs_clear_chunk_bit(yaffs_dev_t *dev, int blk, int chunk); -+void yaffs_set_chunk_bit(yaffs_dev_t *dev, int blk, int chunk); -+int yaffs_check_chunk_bit(yaffs_dev_t *dev, int blk, int chunk); -+int yaffs_still_some_chunks(yaffs_dev_t *dev, int blk); -+int yaffs_count_chunk_bits(yaffs_dev_t *dev, int blk); -+ -+#endif ---- a/fs/yaffs2/yaffs_checkptrw.c -+++ b/fs/yaffs2/yaffs_checkptrw.c -@@ -1,7 +1,7 @@ - /* - * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. - * -- * Copyright (C) 2002-2007 Aleph One Ltd. -+ * Copyright (C) 2002-2010 Aleph One Ltd. - * for Toby Churchill Ltd and Brightstar Engineering - * - * Created by Charles Manning <charles@aleph1.co.uk> -@@ -11,16 +11,12 @@ - * published by the Free Software Foundation. - */ - --const char *yaffs_checkptrw_c_version = -- "$Id: yaffs_checkptrw.c,v 1.18 2009-03-06 17:20:49 wookey Exp $"; -- -- - #include "yaffs_checkptrw.h" - #include "yaffs_getblockinfo.h" - --static int yaffs_CheckpointSpaceOk(yaffs_Device *dev) -+static int yaffs2_checkpt_space_ok(yaffs_dev_t *dev) - { -- int blocksAvailable = dev->nErasedBlocks - dev->nReservedBlocks; -+ int blocksAvailable = dev->n_erased_blocks - dev->param.n_reserved_blocks; - - T(YAFFS_TRACE_CHECKPOINT, - (TSTR("checkpt blocks available = %d" TENDSTR), -@@ -30,53 +26,56 @@ static int yaffs_CheckpointSpaceOk(yaffs - } - - --static int yaffs_CheckpointErase(yaffs_Device *dev) -+static int yaffs_checkpt_erase(yaffs_dev_t *dev) - { - int i; - -- if (!dev->eraseBlockInNAND) -+ if (!dev->param.erase_fn) - return 0; - T(YAFFS_TRACE_CHECKPOINT, (TSTR("checking blocks %d to %d"TENDSTR), -- dev->internalStartBlock, dev->internalEndBlock)); -+ dev->internal_start_block, dev->internal_end_block)); - -- for (i = dev->internalStartBlock; i <= dev->internalEndBlock; i++) { -- yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, i); -- if (bi->blockState == YAFFS_BLOCK_STATE_CHECKPOINT) { -+ for (i = dev->internal_start_block; i <= dev->internal_end_block; i++) { -+ yaffs_block_info_t *bi = yaffs_get_block_info(dev, i); -+ if (bi->block_state == YAFFS_BLOCK_STATE_CHECKPOINT) { - T(YAFFS_TRACE_CHECKPOINT, (TSTR("erasing checkpt block %d"TENDSTR), i)); -- if (dev->eraseBlockInNAND(dev, i - dev->blockOffset /* realign */)) { -- bi->blockState = YAFFS_BLOCK_STATE_EMPTY; -- dev->nErasedBlocks++; -- dev->nFreeChunks += dev->nChunksPerBlock; -+ -+ dev->n_erasures++; -+ -+ if (dev->param.erase_fn(dev, i - dev->block_offset /* realign */)) { -+ bi->block_state = YAFFS_BLOCK_STATE_EMPTY; -+ dev->n_erased_blocks++; -+ dev->n_free_chunks += dev->param.chunks_per_block; - } else { -- dev->markNANDBlockBad(dev, i); -- bi->blockState = YAFFS_BLOCK_STATE_DEAD; -+ dev->param.bad_block_fn(dev, i); -+ bi->block_state = YAFFS_BLOCK_STATE_DEAD; - } - } - } - -- dev->blocksInCheckpoint = 0; -+ dev->blocks_in_checkpt = 0; - - return 1; - } - - --static void yaffs_CheckpointFindNextErasedBlock(yaffs_Device *dev) -+static void yaffs2_checkpt_find_erased_block(yaffs_dev_t *dev) - { - int i; -- int blocksAvailable = dev->nErasedBlocks - dev->nReservedBlocks; -+ int blocksAvailable = dev->n_erased_blocks - dev->param.n_reserved_blocks; - T(YAFFS_TRACE_CHECKPOINT, - (TSTR("allocating checkpt block: erased %d reserved %d avail %d next %d "TENDSTR), -- dev->nErasedBlocks, dev->nReservedBlocks, blocksAvailable, dev->checkpointNextBlock)); -+ dev->n_erased_blocks, dev->param.n_reserved_blocks, blocksAvailable, dev->checkpt_next_block)); - -- if (dev->checkpointNextBlock >= 0 && -- dev->checkpointNextBlock <= dev->internalEndBlock && -+ if (dev->checkpt_next_block >= 0 && -+ dev->checkpt_next_block <= dev->internal_end_block && - blocksAvailable > 0) { - -- for (i = dev->checkpointNextBlock; i <= dev->internalEndBlock; i++) { -- yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, i); -- if (bi->blockState == YAFFS_BLOCK_STATE_EMPTY) { -- dev->checkpointNextBlock = i + 1; -- dev->checkpointCurrentBlock = i; -+ for (i = dev->checkpt_next_block; i <= dev->internal_end_block; i++) { -+ yaffs_block_info_t *bi = yaffs_get_block_info(dev, i); -+ if (bi->block_state == YAFFS_BLOCK_STATE_EMPTY) { -+ dev->checkpt_next_block = i + 1; -+ dev->checkpt_cur_block = i; - T(YAFFS_TRACE_CHECKPOINT, (TSTR("allocating checkpt block %d"TENDSTR), i)); - return; - } -@@ -84,34 +83,34 @@ static void yaffs_CheckpointFindNextEras - } - T(YAFFS_TRACE_CHECKPOINT, (TSTR("out of checkpt blocks"TENDSTR))); - -- dev->checkpointNextBlock = -1; -- dev->checkpointCurrentBlock = -1; -+ dev->checkpt_next_block = -1; -+ dev->checkpt_cur_block = -1; - } - --static void yaffs_CheckpointFindNextCheckpointBlock(yaffs_Device *dev) -+static void yaffs2_checkpt_find_block(yaffs_dev_t *dev) - { - int i; -- yaffs_ExtendedTags tags; -+ yaffs_ext_tags tags; - - T(YAFFS_TRACE_CHECKPOINT, (TSTR("find next checkpt block: start: blocks %d next %d" TENDSTR), -- dev->blocksInCheckpoint, dev->checkpointNextBlock)); -+ dev->blocks_in_checkpt, dev->checkpt_next_block)); - -- if (dev->blocksInCheckpoint < dev->checkpointMaxBlocks) -- for (i = dev->checkpointNextBlock; i <= dev->internalEndBlock; i++) { -- int chunk = i * dev->nChunksPerBlock; -- int realignedChunk = chunk - dev->chunkOffset; -+ if (dev->blocks_in_checkpt < dev->checkpt_max_blocks) -+ for (i = dev->checkpt_next_block; i <= dev->internal_end_block; i++) { -+ int chunk = i * dev->param.chunks_per_block; -+ int realignedChunk = chunk - dev->chunk_offset; - -- dev->readChunkWithTagsFromNAND(dev, realignedChunk, -+ dev->param.read_chunk_tags_fn(dev, realignedChunk, - NULL, &tags); - T(YAFFS_TRACE_CHECKPOINT, (TSTR("find next checkpt block: search: block %d oid %d seq %d eccr %d" TENDSTR), -- i, tags.objectId, tags.sequenceNumber, tags.eccResult)); -+ i, tags.obj_id, tags.seq_number, tags.ecc_result)); - -- if (tags.sequenceNumber == YAFFS_SEQUENCE_CHECKPOINT_DATA) { -+ if (tags.seq_number == YAFFS_SEQUENCE_CHECKPOINT_DATA) { - /* Right kind of block */ -- dev->checkpointNextBlock = tags.objectId; -- dev->checkpointCurrentBlock = i; -- dev->checkpointBlockList[dev->blocksInCheckpoint] = i; -- dev->blocksInCheckpoint++; -+ dev->checkpt_next_block = tags.obj_id; -+ dev->checkpt_cur_block = i; -+ dev->checkpt_block_list[dev->blocks_in_checkpt] = i; -+ dev->blocks_in_checkpt++; - T(YAFFS_TRACE_CHECKPOINT, (TSTR("found checkpt block %d"TENDSTR), i)); - return; - } -@@ -119,122 +118,127 @@ static void yaffs_CheckpointFindNextChec - - T(YAFFS_TRACE_CHECKPOINT, (TSTR("found no more checkpt blocks"TENDSTR))); - -- dev->checkpointNextBlock = -1; -- dev->checkpointCurrentBlock = -1; -+ dev->checkpt_next_block = -1; -+ dev->checkpt_cur_block = -1; - } - - --int yaffs_CheckpointOpen(yaffs_Device *dev, int forWriting) -+int yaffs2_checkpt_open(yaffs_dev_t *dev, int forWriting) - { - -+ -+ dev->checkpt_open_write = forWriting; -+ - /* Got the functions we need? */ -- if (!dev->writeChunkWithTagsToNAND || -- !dev->readChunkWithTagsFromNAND || -- !dev->eraseBlockInNAND || -- !dev->markNANDBlockBad) -+ if (!dev->param.write_chunk_tags_fn || -+ !dev->param.read_chunk_tags_fn || -+ !dev->param.erase_fn || -+ !dev->param.bad_block_fn) - return 0; - -- if (forWriting && !yaffs_CheckpointSpaceOk(dev)) -+ if (forWriting && !yaffs2_checkpt_space_ok(dev)) - return 0; - -- if (!dev->checkpointBuffer) -- dev->checkpointBuffer = YMALLOC_DMA(dev->totalBytesPerChunk); -- if (!dev->checkpointBuffer) -+ if (!dev->checkpt_buffer) -+ dev->checkpt_buffer = YMALLOC_DMA(dev->param.total_bytes_per_chunk); -+ if (!dev->checkpt_buffer) - return 0; - - -- dev->checkpointPageSequence = 0; -- -- dev->checkpointOpenForWrite = forWriting; -- -- dev->checkpointByteCount = 0; -- dev->checkpointSum = 0; -- dev->checkpointXor = 0; -- dev->checkpointCurrentBlock = -1; -- dev->checkpointCurrentChunk = -1; -- dev->checkpointNextBlock = dev->internalStartBlock; -+ dev->checkpt_page_seq = 0; -+ dev->checkpt_byte_count = 0; -+ dev->checkpt_sum = 0; -+ dev->checkpt_xor = 0; -+ dev->checkpt_cur_block = -1; -+ dev->checkpt_cur_chunk = -1; -+ dev->checkpt_next_block = dev->internal_start_block; - - /* Erase all the blocks in the checkpoint area */ - if (forWriting) { -- memset(dev->checkpointBuffer, 0, dev->nDataBytesPerChunk); -- dev->checkpointByteOffset = 0; -- return yaffs_CheckpointErase(dev); -+ memset(dev->checkpt_buffer, 0, dev->data_bytes_per_chunk); -+ dev->checkpt_byte_offs = 0; -+ return yaffs_checkpt_erase(dev); - } else { - int i; - /* Set to a value that will kick off a read */ -- dev->checkpointByteOffset = dev->nDataBytesPerChunk; -+ dev->checkpt_byte_offs = dev->data_bytes_per_chunk; - /* A checkpoint block list of 1 checkpoint block per 16 block is (hopefully) - * going to be way more than we need */ -- dev->blocksInCheckpoint = 0; -- dev->checkpointMaxBlocks = (dev->internalEndBlock - dev->internalStartBlock)/16 + 2; -- dev->checkpointBlockList = YMALLOC(sizeof(int) * dev->checkpointMaxBlocks); -- for (i = 0; i < dev->checkpointMaxBlocks; i++) -- dev->checkpointBlockList[i] = -1; -+ dev->blocks_in_checkpt = 0; -+ dev->checkpt_max_blocks = (dev->internal_end_block - dev->internal_start_block)/16 + 2; -+ dev->checkpt_block_list = YMALLOC(sizeof(int) * dev->checkpt_max_blocks); -+ if(!dev->checkpt_block_list) -+ return 0; -+ -+ for (i = 0; i < dev->checkpt_max_blocks; i++) -+ dev->checkpt_block_list[i] = -1; - } - - return 1; - } - --int yaffs_GetCheckpointSum(yaffs_Device *dev, __u32 *sum) -+int yaffs2_get_checkpt_sum(yaffs_dev_t *dev, __u32 *sum) - { - __u32 compositeSum; -- compositeSum = (dev->checkpointSum << 8) | (dev->checkpointXor & 0xFF); -+ compositeSum = (dev->checkpt_sum << 8) | (dev->checkpt_xor & 0xFF); - *sum = compositeSum; - return 1; - } - --static int yaffs_CheckpointFlushBuffer(yaffs_Device *dev) -+static int yaffs2_checkpt_flush_buffer(yaffs_dev_t *dev) - { - int chunk; - int realignedChunk; - -- yaffs_ExtendedTags tags; -+ yaffs_ext_tags tags; - -- if (dev->checkpointCurrentBlock < 0) { -- yaffs_CheckpointFindNextErasedBlock(dev); -- dev->checkpointCurrentChunk = 0; -+ if (dev->checkpt_cur_block < 0) { -+ yaffs2_checkpt_find_erased_block(dev); -+ dev->checkpt_cur_chunk = 0; - } - -- if (dev->checkpointCurrentBlock < 0) -+ if (dev->checkpt_cur_block < 0) - return 0; - -- tags.chunkDeleted = 0; -- tags.objectId = dev->checkpointNextBlock; /* Hint to next place to look */ -- tags.chunkId = dev->checkpointPageSequence + 1; -- tags.sequenceNumber = YAFFS_SEQUENCE_CHECKPOINT_DATA; -- tags.byteCount = dev->nDataBytesPerChunk; -- if (dev->checkpointCurrentChunk == 0) { -+ tags.is_deleted = 0; -+ tags.obj_id = dev->checkpt_next_block; /* Hint to next place to look */ -+ tags.chunk_id = dev->checkpt_page_seq + 1; -+ tags.seq_number = YAFFS_SEQUENCE_CHECKPOINT_DATA; -+ tags.n_bytes = dev->data_bytes_per_chunk; -+ if (dev->checkpt_cur_chunk == 0) { - /* First chunk we write for the block? Set block state to - checkpoint */ -- yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, dev->checkpointCurrentBlock); -- bi->blockState = YAFFS_BLOCK_STATE_CHECKPOINT; -- dev->blocksInCheckpoint++; -+ yaffs_block_info_t *bi = yaffs_get_block_info(dev, dev->checkpt_cur_block); -+ bi->block_state = YAFFS_BLOCK_STATE_CHECKPOINT; -+ dev->blocks_in_checkpt++; - } - -- chunk = dev->checkpointCurrentBlock * dev->nChunksPerBlock + dev->checkpointCurrentChunk; -+ chunk = dev->checkpt_cur_block * dev->param.chunks_per_block + dev->checkpt_cur_chunk; - - - T(YAFFS_TRACE_CHECKPOINT, (TSTR("checkpoint wite buffer nand %d(%d:%d) objid %d chId %d" TENDSTR), -- chunk, dev->checkpointCurrentBlock, dev->checkpointCurrentChunk, tags.objectId, tags.chunkId)); -+ chunk, dev->checkpt_cur_block, dev->checkpt_cur_chunk, tags.obj_id, tags.chunk_id)); - -- realignedChunk = chunk - dev->chunkOffset; -+ realignedChunk = chunk - dev->chunk_offset; - -- dev->writeChunkWithTagsToNAND(dev, realignedChunk, -- dev->checkpointBuffer, &tags); -- dev->checkpointByteOffset = 0; -- dev->checkpointPageSequence++; -- dev->checkpointCurrentChunk++; -- if (dev->checkpointCurrentChunk >= dev->nChunksPerBlock) { -- dev->checkpointCurrentChunk = 0; -- dev->checkpointCurrentBlock = -1; -+ dev->n_page_writes++; -+ -+ dev->param.write_chunk_tags_fn(dev, realignedChunk, -+ dev->checkpt_buffer, &tags); -+ dev->checkpt_byte_offs = 0; -+ dev->checkpt_page_seq++; -+ dev->checkpt_cur_chunk++; -+ if (dev->checkpt_cur_chunk >= dev->param.chunks_per_block) { -+ dev->checkpt_cur_chunk = 0; -+ dev->checkpt_cur_block = -1; - } -- memset(dev->checkpointBuffer, 0, dev->nDataBytesPerChunk); -+ memset(dev->checkpt_buffer, 0, dev->data_bytes_per_chunk); - - return 1; - } - - --int yaffs_CheckpointWrite(yaffs_Device *dev, const void *data, int nBytes) -+int yaffs2_checkpt_wr(yaffs_dev_t *dev, const void *data, int n_bytes) - { - int i = 0; - int ok = 1; -@@ -244,36 +248,36 @@ int yaffs_CheckpointWrite(yaffs_Device * - - - -- if (!dev->checkpointBuffer) -+ if (!dev->checkpt_buffer) - return 0; - -- if (!dev->checkpointOpenForWrite) -+ if (!dev->checkpt_open_write) - return -1; - -- while (i < nBytes && ok) { -- dev->checkpointBuffer[dev->checkpointByteOffset] = *dataBytes; -- dev->checkpointSum += *dataBytes; -- dev->checkpointXor ^= *dataBytes; -+ while (i < n_bytes && ok) { -+ dev->checkpt_buffer[dev->checkpt_byte_offs] = *dataBytes; -+ dev->checkpt_sum += *dataBytes; -+ dev->checkpt_xor ^= *dataBytes; - -- dev->checkpointByteOffset++; -+ dev->checkpt_byte_offs++; - i++; - dataBytes++; -- dev->checkpointByteCount++; -+ dev->checkpt_byte_count++; - - -- if (dev->checkpointByteOffset < 0 || -- dev->checkpointByteOffset >= dev->nDataBytesPerChunk) -- ok = yaffs_CheckpointFlushBuffer(dev); -+ if (dev->checkpt_byte_offs < 0 || -+ dev->checkpt_byte_offs >= dev->data_bytes_per_chunk) -+ ok = yaffs2_checkpt_flush_buffer(dev); - } - - return i; - } - --int yaffs_CheckpointRead(yaffs_Device *dev, void *data, int nBytes) -+int yaffs2_checkpt_rd(yaffs_dev_t *dev, void *data, int n_bytes) - { - int i = 0; - int ok = 1; -- yaffs_ExtendedTags tags; -+ yaffs_ext_tags tags; - - - int chunk; -@@ -281,113 +285,116 @@ int yaffs_CheckpointRead(yaffs_Device *d - - __u8 *dataBytes = (__u8 *)data; - -- if (!dev->checkpointBuffer) -+ if (!dev->checkpt_buffer) - return 0; - -- if (dev->checkpointOpenForWrite) -+ if (dev->checkpt_open_write) - return -1; - -- while (i < nBytes && ok) { -+ while (i < n_bytes && ok) { - - -- if (dev->checkpointByteOffset < 0 || -- dev->checkpointByteOffset >= dev->nDataBytesPerChunk) { -+ if (dev->checkpt_byte_offs < 0 || -+ dev->checkpt_byte_offs >= dev->data_bytes_per_chunk) { - -- if (dev->checkpointCurrentBlock < 0) { -- yaffs_CheckpointFindNextCheckpointBlock(dev); -- dev->checkpointCurrentChunk = 0; -+ if (dev->checkpt_cur_block < 0) { -+ yaffs2_checkpt_find_block(dev); -+ dev->checkpt_cur_chunk = 0; - } - -- if (dev->checkpointCurrentBlock < 0) -+ if (dev->checkpt_cur_block < 0) - ok = 0; - else { -- chunk = dev->checkpointCurrentBlock * -- dev->nChunksPerBlock + -- dev->checkpointCurrentChunk; -- -- realignedChunk = chunk - dev->chunkOffset; -+ chunk = dev->checkpt_cur_block * -+ dev->param.chunks_per_block + -+ dev->checkpt_cur_chunk; -+ -+ realignedChunk = chunk - dev->chunk_offset; -+ -+ dev->n_page_reads++; - - /* read in the next chunk */ - /* printf("read checkpoint page %d\n",dev->checkpointPage); */ -- dev->readChunkWithTagsFromNAND(dev, -+ dev->param.read_chunk_tags_fn(dev, - realignedChunk, -- dev->checkpointBuffer, -+ dev->checkpt_buffer, - &tags); - -- if (tags.chunkId != (dev->checkpointPageSequence + 1) || -- tags.eccResult > YAFFS_ECC_RESULT_FIXED || -- tags.sequenceNumber != YAFFS_SEQUENCE_CHECKPOINT_DATA) -+ if (tags.chunk_id != (dev->checkpt_page_seq + 1) || -+ tags.ecc_result > YAFFS_ECC_RESULT_FIXED || -+ tags.seq_number != YAFFS_SEQUENCE_CHECKPOINT_DATA) - ok = 0; - -- dev->checkpointByteOffset = 0; -- dev->checkpointPageSequence++; -- dev->checkpointCurrentChunk++; -+ dev->checkpt_byte_offs = 0; -+ dev->checkpt_page_seq++; -+ dev->checkpt_cur_chunk++; - -- if (dev->checkpointCurrentChunk >= dev->nChunksPerBlock) -- dev->checkpointCurrentBlock = -1; -+ if (dev->checkpt_cur_chunk >= dev->param.chunks_per_block) -+ dev->checkpt_cur_block = -1; - } - } - - if (ok) { -- *dataBytes = dev->checkpointBuffer[dev->checkpointByteOffset]; -- dev->checkpointSum += *dataBytes; -- dev->checkpointXor ^= *dataBytes; -- dev->checkpointByteOffset++; -+ *dataBytes = dev->checkpt_buffer[dev->checkpt_byte_offs]; -+ dev->checkpt_sum += *dataBytes; -+ dev->checkpt_xor ^= *dataBytes; -+ dev->checkpt_byte_offs++; - i++; - dataBytes++; -- dev->checkpointByteCount++; -+ dev->checkpt_byte_count++; - } - } - - return i; - } - --int yaffs_CheckpointClose(yaffs_Device *dev) -+int yaffs_checkpt_close(yaffs_dev_t *dev) - { - -- if (dev->checkpointOpenForWrite) { -- if (dev->checkpointByteOffset != 0) -- yaffs_CheckpointFlushBuffer(dev); -- } else { -+ if (dev->checkpt_open_write) { -+ if (dev->checkpt_byte_offs != 0) -+ yaffs2_checkpt_flush_buffer(dev); -+ } else if(dev->checkpt_block_list){ - int i; -- for (i = 0; i < dev->blocksInCheckpoint && dev->checkpointBlockList[i] >= 0; i++) { -- yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, dev->checkpointBlockList[i]); -- if (bi->blockState == YAFFS_BLOCK_STATE_EMPTY) -- bi->blockState = YAFFS_BLOCK_STATE_CHECKPOINT; -+ for (i = 0; i < dev->blocks_in_checkpt && dev->checkpt_block_list[i] >= 0; i++) { -+ int blk = dev->checkpt_block_list[i]; -+ yaffs_block_info_t *bi = NULL; -+ if( dev->internal_start_block <= blk && blk <= dev->internal_end_block) -+ bi = yaffs_get_block_info(dev, blk); -+ if (bi && bi->block_state == YAFFS_BLOCK_STATE_EMPTY) -+ bi->block_state = YAFFS_BLOCK_STATE_CHECKPOINT; - else { - /* Todo this looks odd... */ - } - } -- YFREE(dev->checkpointBlockList); -- dev->checkpointBlockList = NULL; -+ YFREE(dev->checkpt_block_list); -+ dev->checkpt_block_list = NULL; - } - -- dev->nFreeChunks -= dev->blocksInCheckpoint * dev->nChunksPerBlock; -- dev->nErasedBlocks -= dev->blocksInCheckpoint; -+ dev->n_free_chunks -= dev->blocks_in_checkpt * dev->param.chunks_per_block; -+ dev->n_erased_blocks -= dev->blocks_in_checkpt; - - - T(YAFFS_TRACE_CHECKPOINT, (TSTR("checkpoint byte count %d" TENDSTR), -- dev->checkpointByteCount)); -+ dev->checkpt_byte_count)); - -- if (dev->checkpointBuffer) { -+ if (dev->checkpt_buffer) { - /* free the buffer */ -- YFREE(dev->checkpointBuffer); -- dev->checkpointBuffer = NULL; -+ YFREE(dev->checkpt_buffer); -+ dev->checkpt_buffer = NULL; - return 1; - } else - return 0; - } - --int yaffs_CheckpointInvalidateStream(yaffs_Device *dev) -+int yaffs2_checkpt_invalidate_stream(yaffs_dev_t *dev) - { -- /* Erase the first checksum block */ -- -- T(YAFFS_TRACE_CHECKPOINT, (TSTR("checkpoint invalidate"TENDSTR))); -+ /* Erase the checkpoint data */ - -- if (!yaffs_CheckpointSpaceOk(dev)) -- return 0; -+ T(YAFFS_TRACE_CHECKPOINT, (TSTR("checkpoint invalidate of %d blocks"TENDSTR), -+ dev->blocks_in_checkpt)); - -- return yaffs_CheckpointErase(dev); -+ return yaffs_checkpt_erase(dev); - } - - ---- a/fs/yaffs2/yaffs_checkptrw.h -+++ b/fs/yaffs2/yaffs_checkptrw.h -@@ -1,7 +1,7 @@ - /* - * YAFFS: Yet another Flash File System . A NAND-flash specific file system. - * -- * Copyright (C) 2002-2007 Aleph One Ltd. -+ * Copyright (C) 2002-2010 Aleph One Ltd. - * for Toby Churchill Ltd and Brightstar Engineering - * - * Created by Charles Manning <charles@aleph1.co.uk> -@@ -18,18 +18,17 @@ - - #include "yaffs_guts.h" - --int yaffs_CheckpointOpen(yaffs_Device *dev, int forWriting); -+int yaffs2_checkpt_open(yaffs_dev_t *dev, int forWriting); - --int yaffs_CheckpointWrite(yaffs_Device *dev, const void *data, int nBytes); -+int yaffs2_checkpt_wr(yaffs_dev_t *dev, const void *data, int n_bytes); - --int yaffs_CheckpointRead(yaffs_Device *dev, void *data, int nBytes); -+int yaffs2_checkpt_rd(yaffs_dev_t *dev, void *data, int n_bytes); - --int yaffs_GetCheckpointSum(yaffs_Device *dev, __u32 *sum); -+int yaffs2_get_checkpt_sum(yaffs_dev_t *dev, __u32 *sum); - --int yaffs_CheckpointClose(yaffs_Device *dev); -+int yaffs_checkpt_close(yaffs_dev_t *dev); - --int yaffs_CheckpointInvalidateStream(yaffs_Device *dev); -+int yaffs2_checkpt_invalidate_stream(yaffs_dev_t *dev); - - - #endif -- ---- a/fs/yaffs2/yaffs_ecc.c -+++ b/fs/yaffs2/yaffs_ecc.c -@@ -1,7 +1,7 @@ - /* - * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. - * -- * Copyright (C) 2002-2007 Aleph One Ltd. -+ * Copyright (C) 2002-2010 Aleph One Ltd. - * for Toby Churchill Ltd and Brightstar Engineering - * - * Created by Charles Manning <charles@aleph1.co.uk> -@@ -28,9 +28,6 @@ - * this bytes influence on the line parity. - */ - --const char *yaffs_ecc_c_version = -- "$Id: yaffs_ecc.c,v 1.11 2009-03-06 17:20:50 wookey Exp $"; -- - #include "yportenv.h" - - #include "yaffs_ecc.h" -@@ -72,7 +69,7 @@ static const unsigned char column_parity - - /* Count the bits in an unsigned char or a U32 */ - --static int yaffs_CountBits(unsigned char x) -+static int yaffs_count_bits(unsigned char x) - { - int r = 0; - while (x) { -@@ -83,7 +80,7 @@ static int yaffs_CountBits(unsigned char - return r; - } - --static int yaffs_CountBits32(unsigned x) -+static int yaffs_count_bits32(unsigned x) - { - int r = 0; - while (x) { -@@ -95,7 +92,7 @@ static int yaffs_CountBits32(unsigned x) - } - - /* Calculate the ECC for a 256-byte block of data */ --void yaffs_ECCCalculate(const unsigned char *data, unsigned char *ecc) -+void yaffs_ecc_cacl(const unsigned char *data, unsigned char *ecc) - { - unsigned int i; - -@@ -166,7 +163,7 @@ void yaffs_ECCCalculate(const unsigned c - - /* Correct the ECC on a 256 byte block of data */ - --int yaffs_ECCCorrect(unsigned char *data, unsigned char *read_ecc, -+int yaffs_ecc_correct(unsigned char *data, unsigned char *read_ecc, - const unsigned char *test_ecc) - { - unsigned char d0, d1, d2; /* deltas */ -@@ -226,9 +223,9 @@ int yaffs_ECCCorrect(unsigned char *data - return 1; /* Corrected the error */ - } - -- if ((yaffs_CountBits(d0) + -- yaffs_CountBits(d1) + -- yaffs_CountBits(d2)) == 1) { -+ if ((yaffs_count_bits(d0) + -+ yaffs_count_bits(d1) + -+ yaffs_count_bits(d2)) == 1) { - /* Reccoverable error in ecc */ - - read_ecc[0] = test_ecc[0]; -@@ -248,7 +245,7 @@ int yaffs_ECCCorrect(unsigned char *data - /* - * ECCxxxOther does ECC calcs on arbitrary n bytes of data - */ --void yaffs_ECCCalculateOther(const unsigned char *data, unsigned nBytes, -+void yaffs_ecc_calc_other(const unsigned char *data, unsigned n_bytes, - yaffs_ECCOther *eccOther) - { - unsigned int i; -@@ -258,7 +255,7 @@ void yaffs_ECCCalculateOther(const unsig - unsigned line_parity_prime = 0; - unsigned char b; - -- for (i = 0; i < nBytes; i++) { -+ for (i = 0; i < n_bytes; i++) { - b = column_parity_table[*data++]; - col_parity ^= b; - -@@ -275,7 +272,7 @@ void yaffs_ECCCalculateOther(const unsig - eccOther->lineParityPrime = line_parity_prime; - } - --int yaffs_ECCCorrectOther(unsigned char *data, unsigned nBytes, -+int yaffs_ecc_correct_other(unsigned char *data, unsigned n_bytes, - yaffs_ECCOther *read_ecc, - const yaffs_ECCOther *test_ecc) - { -@@ -304,7 +301,7 @@ int yaffs_ECCCorrectOther(unsigned char - if (cDelta & 0x02) - bit |= 0x01; - -- if (lDelta >= nBytes) -+ if (lDelta >= n_bytes) - return -1; - - data[lDelta] ^= (1 << bit); -@@ -312,8 +309,8 @@ int yaffs_ECCCorrectOther(unsigned char - return 1; /* corrected */ - } - -- if ((yaffs_CountBits32(lDelta) + yaffs_CountBits32(lDeltaPrime) + -- yaffs_CountBits(cDelta)) == 1) { -+ if ((yaffs_count_bits32(lDelta) + yaffs_count_bits32(lDeltaPrime) + -+ yaffs_count_bits(cDelta)) == 1) { - /* Reccoverable error in ecc */ - - *read_ecc = *test_ecc; ---- a/fs/yaffs2/yaffs_ecc.h -+++ b/fs/yaffs2/yaffs_ecc.h -@@ -1,7 +1,7 @@ - /* - * YAFFS: Yet another Flash File System . A NAND-flash specific file system. - * -- * Copyright (C) 2002-2007 Aleph One Ltd. -+ * Copyright (C) 2002-2010 Aleph One Ltd. - * for Toby Churchill Ltd and Brightstar Engineering - * - * Created by Charles Manning <charles@aleph1.co.uk> -@@ -32,13 +32,13 @@ typedef struct { - unsigned lineParityPrime; - } yaffs_ECCOther; - --void yaffs_ECCCalculate(const unsigned char *data, unsigned char *ecc); --int yaffs_ECCCorrect(unsigned char *data, unsigned char *read_ecc, -+void yaffs_ecc_cacl(const unsigned char *data, unsigned char *ecc); -+int yaffs_ecc_correct(unsigned char *data, unsigned char *read_ecc, - const unsigned char *test_ecc); - --void yaffs_ECCCalculateOther(const unsigned char *data, unsigned nBytes, -+void yaffs_ecc_calc_other(const unsigned char *data, unsigned n_bytes, - yaffs_ECCOther *ecc); --int yaffs_ECCCorrectOther(unsigned char *data, unsigned nBytes, -+int yaffs_ecc_correct_other(unsigned char *data, unsigned n_bytes, - yaffs_ECCOther *read_ecc, - const yaffs_ECCOther *test_ecc); - #endif ---- a/fs/yaffs2/yaffs_fs.c -+++ /dev/null -@@ -1,2529 +0,0 @@ --/* -- * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. -- * -- * Copyright (C) 2002-2009 Aleph One Ltd. -- * for Toby Churchill Ltd and Brightstar Engineering -- * -- * Created by Charles Manning <charles@aleph1.co.uk> -- * Acknowledgements: -- * Luc van OostenRyck for numerous patches. -- * Nick Bane for numerous patches. -- * Nick Bane for 2.5/2.6 integration. -- * Andras Toth for mknod rdev issue. -- * Michael Fischer for finding the problem with inode inconsistency. -- * Some code bodily lifted from JFFS -- * -- * This program is free software; you can redistribute it and/or modify -- * it under the terms of the GNU General Public License version 2 as -- * published by the Free Software Foundation. -- */ -- --/* -- * -- * This is the file system front-end to YAFFS that hooks it up to -- * the VFS. -- * -- * Special notes: -- * >> 2.4: sb->u.generic_sbp points to the yaffs_Device associated with -- * this superblock -- * >> 2.6: sb->s_fs_info points to the yaffs_Device associated with this -- * superblock -- * >> inode->u.generic_ip points to the associated yaffs_Object. -- */ -- --const char *yaffs_fs_c_version = -- "$Id: yaffs_fs.c,v 1.79 2009-03-17 01:12:00 wookey Exp $"; --extern const char *yaffs_guts_c_version; -- --#include <linux/version.h> --#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 19)) --#include <linux/config.h> --#endif --#include <linux/kernel.h> --#include <linux/module.h> --#include <linux/slab.h> --#include <linux/init.h> --#include <linux/fs.h> --#include <linux/proc_fs.h> --#include <linux/smp_lock.h> --#include <linux/pagemap.h> --#include <linux/mtd/mtd.h> --#include <linux/interrupt.h> --#include <linux/string.h> --#include <linux/ctype.h> -- --#include "asm/div64.h" -- --#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) -- --#include <linux/statfs.h> /* Added NCB 15-8-2003 */ --#include <linux/statfs.h> --#define UnlockPage(p) unlock_page(p) --#define Page_Uptodate(page) test_bit(PG_uptodate, &(page)->flags) -- --/* FIXME: use sb->s_id instead ? */ --#define yaffs_devname(sb, buf) bdevname(sb->s_bdev, buf) -- --#else -- --#include <linux/locks.h> --#define BDEVNAME_SIZE 0 --#define yaffs_devname(sb, buf) kdevname(sb->s_dev) -- --#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 5, 0)) --/* added NCB 26/5/2006 for 2.4.25-vrs2-tcl1 kernel */ --#define __user --#endif -- --#endif -- --#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 26)) --#define YPROC_ROOT (&proc_root) --#else --#define YPROC_ROOT NULL --#endif -- --#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) --#define WRITE_SIZE_STR "writesize" --#define WRITE_SIZE(mtd) ((mtd)->writesize) --#else --#define WRITE_SIZE_STR "oobblock" --#define WRITE_SIZE(mtd) ((mtd)->oobblock) --#endif -- --#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 27)) --#define YAFFS_USE_WRITE_BEGIN_END 1 --#else --#define YAFFS_USE_WRITE_BEGIN_END 0 --#endif -- --#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 28)) --static uint32_t YCALCBLOCKS(uint64_t partition_size, uint32_t block_size) --{ -- uint64_t result = partition_size; -- do_div(result, block_size); -- return (uint32_t)result; --} --#else --#define YCALCBLOCKS(s, b) ((s)/(b)) --#endif -- --#include <linux/uaccess.h> -- --#include "yportenv.h" --#include "yaffs_guts.h" -- --#include <linux/mtd/mtd.h> --#include "yaffs_mtdif.h" --#include "yaffs_mtdif1.h" --#include "yaffs_mtdif2.h" -- --unsigned int yaffs_traceMask = YAFFS_TRACE_BAD_BLOCKS; --unsigned int yaffs_wr_attempts = YAFFS_WR_ATTEMPTS; --unsigned int yaffs_auto_checkpoint = 1; -- --/* Module Parameters */ --#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) --module_param(yaffs_traceMask, uint, 0644); --module_param(yaffs_wr_attempts, uint, 0644); --module_param(yaffs_auto_checkpoint, uint, 0644); --#else --MODULE_PARM(yaffs_traceMask, "i"); --MODULE_PARM(yaffs_wr_attempts, "i"); --MODULE_PARM(yaffs_auto_checkpoint, "i"); --#endif -- --#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 25)) --/* use iget and read_inode */ --#define Y_IGET(sb, inum) iget((sb), (inum)) --static void yaffs_read_inode(struct inode *inode); -- --#else --/* Call local equivalent */ --#define YAFFS_USE_OWN_IGET --#define Y_IGET(sb, inum) yaffs_iget((sb), (inum)) -- --static struct inode *yaffs_iget(struct super_block *sb, unsigned long ino); --#endif -- --/*#define T(x) printk x */ -- --#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 18)) --#define yaffs_InodeToObjectLV(iptr) ((iptr)->i_private) --#else --#define yaffs_InodeToObjectLV(iptr) ((iptr)->u.generic_ip) --#endif -- --#define yaffs_InodeToObject(iptr) ((yaffs_Object *)(yaffs_InodeToObjectLV(iptr))) --#define yaffs_DentryToObject(dptr) yaffs_InodeToObject((dptr)->d_inode) -- --#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) --#define yaffs_SuperToDevice(sb) ((yaffs_Device *)sb->s_fs_info) --#else --#define yaffs_SuperToDevice(sb) ((yaffs_Device *)sb->u.generic_sbp) --#endif -- --static void yaffs_put_super(struct super_block *sb); -- --static ssize_t yaffs_file_write(struct file *f, const char *buf, size_t n, -- loff_t *pos); --static ssize_t yaffs_hold_space(struct file *f); --static void yaffs_release_space(struct file *f); -- --#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) --static int yaffs_file_flush(struct file *file, fl_owner_t id); --#else --static int yaffs_file_flush(struct file *file); --#endif -- --static int yaffs_sync_object(struct file *file, struct dentry *dentry, -- int datasync); -- --static int yaffs_readdir(struct file *f, void *dirent, filldir_t filldir); -- --#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) --static int yaffs_create(struct inode *dir, struct dentry *dentry, int mode, -- struct nameidata *n); --static struct dentry *yaffs_lookup(struct inode *dir, struct dentry *dentry, -- struct nameidata *n); --#else --static int yaffs_create(struct inode *dir, struct dentry *dentry, int mode); --static struct dentry *yaffs_lookup(struct inode *dir, struct dentry *dentry); --#endif --static int yaffs_link(struct dentry *old_dentry, struct inode *dir, -- struct dentry *dentry); --static int yaffs_unlink(struct inode *dir, struct dentry *dentry); --static int yaffs_symlink(struct inode *dir, struct dentry *dentry, -- const char *symname); --static int yaffs_mkdir(struct inode *dir, struct dentry *dentry, int mode); -- --#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) --static int yaffs_mknod(struct inode *dir, struct dentry *dentry, int mode, -- dev_t dev); --#else --static int yaffs_mknod(struct inode *dir, struct dentry *dentry, int mode, -- int dev); --#endif --static int yaffs_rename(struct inode *old_dir, struct dentry *old_dentry, -- struct inode *new_dir, struct dentry *new_dentry); --static int yaffs_setattr(struct dentry *dentry, struct iattr *attr); -- --#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) --static int yaffs_sync_fs(struct super_block *sb, int wait); --static void yaffs_write_super(struct super_block *sb); --#else --static int yaffs_sync_fs(struct super_block *sb); --static int yaffs_write_super(struct super_block *sb); --#endif -- --#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) --static int yaffs_statfs(struct dentry *dentry, struct kstatfs *buf); --#elif (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) --static int yaffs_statfs(struct super_block *sb, struct kstatfs *buf); --#else --static int yaffs_statfs(struct super_block *sb, struct statfs *buf); --#endif -- --#ifdef YAFFS_HAS_PUT_INODE --static void yaffs_put_inode(struct inode *inode); --#endif -- --static void yaffs_delete_inode(struct inode *); --static void yaffs_clear_inode(struct inode *); -- --static int yaffs_readpage(struct file *file, struct page *page); --#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) --static int yaffs_writepage(struct page *page, struct writeback_control *wbc); --#else --static int yaffs_writepage(struct page *page); --#endif -- -- --#if (YAFFS_USE_WRITE_BEGIN_END != 0) --static int yaffs_write_begin(struct file *filp, struct address_space *mapping, -- loff_t pos, unsigned len, unsigned flags, -- struct page **pagep, void **fsdata); --static int yaffs_write_end(struct file *filp, struct address_space *mapping, -- loff_t pos, unsigned len, unsigned copied, -- struct page *pg, void *fsdadata); --#else --static int yaffs_prepare_write(struct file *f, struct page *pg, -- unsigned offset, unsigned to); --static int yaffs_commit_write(struct file *f, struct page *pg, unsigned offset, -- unsigned to); -- --#endif -- --static int yaffs_readlink(struct dentry *dentry, char __user *buffer, -- int buflen); --#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 13)) --static void *yaffs_follow_link(struct dentry *dentry, struct nameidata *nd); --#else --static int yaffs_follow_link(struct dentry *dentry, struct nameidata *nd); --#endif -- --static struct address_space_operations yaffs_file_address_operations = { -- .readpage = yaffs_readpage, -- .writepage = yaffs_writepage, --#if (YAFFS_USE_WRITE_BEGIN_END > 0) -- .write_begin = yaffs_write_begin, -- .write_end = yaffs_write_end, --#else -- .prepare_write = yaffs_prepare_write, -- .commit_write = yaffs_commit_write, --#endif --}; -- --#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 22)) --static const struct file_operations yaffs_file_operations = { -- .read = do_sync_read, -- .write = do_sync_write, -- .aio_read = generic_file_aio_read, -- .aio_write = generic_file_aio_write, -- .mmap = generic_file_mmap, -- .flush = yaffs_file_flush, -- .fsync = yaffs_sync_object, -- .splice_read = generic_file_splice_read, -- .splice_write = generic_file_splice_write, -- .llseek = generic_file_llseek, --}; -- --#elif (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 18)) -- --static const struct file_operations yaffs_file_operations = { -- .read = do_sync_read, -- .write = do_sync_write, -- .aio_read = generic_file_aio_read, -- .aio_write = generic_file_aio_write, -- .mmap = generic_file_mmap, -- .flush = yaffs_file_flush, -- .fsync = yaffs_sync_object, -- .sendfile = generic_file_sendfile, --}; -- --#else -- --static const struct file_operations yaffs_file_operations = { -- .read = generic_file_read, -- .write = generic_file_write, -- .mmap = generic_file_mmap, -- .flush = yaffs_file_flush, -- .fsync = yaffs_sync_object, --#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) -- .sendfile = generic_file_sendfile, --#endif --}; --#endif -- --static const struct inode_operations yaffs_file_inode_operations = { -- .setattr = yaffs_setattr, --}; -- --static const struct inode_operations yaffs_symlink_inode_operations = { -- .readlink = yaffs_readlink, -- .follow_link = yaffs_follow_link, -- .setattr = yaffs_setattr, --}; -- --static const struct inode_operations yaffs_dir_inode_operations = { -- .create = yaffs_create, -- .lookup = yaffs_lookup, -- .link = yaffs_link, -- .unlink = yaffs_unlink, -- .symlink = yaffs_symlink, -- .mkdir = yaffs_mkdir, -- .rmdir = yaffs_unlink, -- .mknod = yaffs_mknod, -- .rename = yaffs_rename, -- .setattr = yaffs_setattr, --}; -- --static const struct file_operations yaffs_dir_operations = { -- .read = generic_read_dir, -- .readdir = yaffs_readdir, -- .fsync = yaffs_sync_object, --}; -- --static const struct super_operations yaffs_super_ops = { -- .statfs = yaffs_statfs, -- --#ifndef YAFFS_USE_OWN_IGET -- .read_inode = yaffs_read_inode, --#endif --#ifdef YAFFS_HAS_PUT_INODE -- .put_inode = yaffs_put_inode, --#endif -- .put_super = yaffs_put_super, -- .delete_inode = yaffs_delete_inode, -- .clear_inode = yaffs_clear_inode, -- .sync_fs = yaffs_sync_fs, -- .write_super = yaffs_write_super, --}; -- --static void yaffs_GrossLock(yaffs_Device *dev) --{ -- T(YAFFS_TRACE_OS, ("yaffs locking %p\n", current)); -- down(&dev->grossLock); -- T(YAFFS_TRACE_OS, ("yaffs locked %p\n", current)); --} -- --static void yaffs_GrossUnlock(yaffs_Device *dev) --{ -- T(YAFFS_TRACE_OS, ("yaffs unlocking %p\n", current)); -- up(&dev->grossLock); --} -- --static int yaffs_readlink(struct dentry *dentry, char __user *buffer, -- int buflen) --{ -- unsigned char *alias; -- int ret; -- -- yaffs_Device *dev = yaffs_DentryToObject(dentry)->myDev; -- -- yaffs_GrossLock(dev); -- -- alias = yaffs_GetSymlinkAlias(yaffs_DentryToObject(dentry)); -- -- yaffs_GrossUnlock(dev); -- -- if (!alias) -- return -ENOMEM; -- -- ret = vfs_readlink(dentry, buffer, buflen, alias); -- kfree(alias); -- return ret; --} -- --#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 13)) --static void *yaffs_follow_link(struct dentry *dentry, struct nameidata *nd) --#else --static int yaffs_follow_link(struct dentry *dentry, struct nameidata *nd) --#endif --{ -- unsigned char *alias; -- int ret; -- yaffs_Device *dev = yaffs_DentryToObject(dentry)->myDev; -- -- yaffs_GrossLock(dev); -- -- alias = yaffs_GetSymlinkAlias(yaffs_DentryToObject(dentry)); -- -- yaffs_GrossUnlock(dev); -- -- if (!alias) { -- ret = -ENOMEM; -- goto out; -- } -- -- ret = vfs_follow_link(nd, alias); -- kfree(alias); --out: --#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 13)) -- return ERR_PTR(ret); --#else -- return ret; --#endif --} -- --struct inode *yaffs_get_inode(struct super_block *sb, int mode, int dev, -- yaffs_Object *obj); -- --/* -- * Lookup is used to find objects in the fs -- */ --#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) -- --static struct dentry *yaffs_lookup(struct inode *dir, struct dentry *dentry, -- struct nameidata *n) --#else --static struct dentry *yaffs_lookup(struct inode *dir, struct dentry *dentry) --#endif --{ -- yaffs_Object *obj; -- struct inode *inode = NULL; /* NCB 2.5/2.6 needs NULL here */ -- -- yaffs_Device *dev = yaffs_InodeToObject(dir)->myDev; -- -- yaffs_GrossLock(dev); -- -- T(YAFFS_TRACE_OS, -- ("yaffs_lookup for %d:%s\n", -- yaffs_InodeToObject(dir)->objectId, dentry->d_name.name)); -- -- obj = yaffs_FindObjectByName(yaffs_InodeToObject(dir), -- dentry->d_name.name); -- -- obj = yaffs_GetEquivalentObject(obj); /* in case it was a hardlink */ -- -- /* Can't hold gross lock when calling yaffs_get_inode() */ -- yaffs_GrossUnlock(dev); -- -- if (obj) { -- T(YAFFS_TRACE_OS, -- ("yaffs_lookup found %d\n", obj->objectId)); -- -- inode = yaffs_get_inode(dir->i_sb, obj->yst_mode, 0, obj); -- -- if (inode) { -- T(YAFFS_TRACE_OS, -- ("yaffs_loookup dentry \n")); --/* #if 0 asserted by NCB for 2.5/6 compatability - falls through to -- * d_add even if NULL inode */ --#if 0 -- /*dget(dentry); // try to solve directory bug */ -- d_add(dentry, inode); -- -- /* return dentry; */ -- return NULL; --#endif -- } -- -- } else { -- T(YAFFS_TRACE_OS, ("yaffs_lookup not found\n")); -- -- } -- --/* added NCB for 2.5/6 compatability - forces add even if inode is -- * NULL which creates dentry hash */ -- d_add(dentry, inode); -- -- return NULL; --} -- -- --#ifdef YAFFS_HAS_PUT_INODE -- --/* For now put inode is just for debugging -- * Put inode is called when the inode **structure** is put. -- */ --static void yaffs_put_inode(struct inode *inode) --{ -- T(YAFFS_TRACE_OS, -- ("yaffs_put_inode: ino %d, count %d\n", (int)inode->i_ino, -- atomic_read(&inode->i_count))); -- --} --#endif -- --/* clear is called to tell the fs to release any per-inode data it holds */ --static void yaffs_clear_inode(struct inode *inode) --{ -- yaffs_Object *obj; -- yaffs_Device *dev; -- -- obj = yaffs_InodeToObject(inode); -- -- T(YAFFS_TRACE_OS, -- ("yaffs_clear_inode: ino %d, count %d %s\n", (int)inode->i_ino, -- atomic_read(&inode->i_count), -- obj ? "object exists" : "null object")); -- -- if (obj) { -- dev = obj->myDev; -- yaffs_GrossLock(dev); -- -- /* Clear the association between the inode and -- * the yaffs_Object. -- */ -- obj->myInode = NULL; -- yaffs_InodeToObjectLV(inode) = NULL; -- -- /* If the object freeing was deferred, then the real -- * free happens now. -- * This should fix the inode inconsistency problem. -- */ -- -- yaffs_HandleDeferedFree(obj); -- -- yaffs_GrossUnlock(dev); -- } -- --} -- --/* delete is called when the link count is zero and the inode -- * is put (ie. nobody wants to know about it anymore, time to -- * delete the file). -- * NB Must call clear_inode() -- */ --static void yaffs_delete_inode(struct inode *inode) --{ -- yaffs_Object *obj = yaffs_InodeToObject(inode); -- yaffs_Device *dev; -- -- T(YAFFS_TRACE_OS, -- ("yaffs_delete_inode: ino %d, count %d %s\n", (int)inode->i_ino, -- atomic_read(&inode->i_count), -- obj ? "object exists" : "null object")); -- -- if (obj) { -- dev = obj->myDev; -- yaffs_GrossLock(dev); -- yaffs_DeleteObject(obj); -- yaffs_GrossUnlock(dev); -- } --#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 13)) -- truncate_inode_pages(&inode->i_data, 0); --#endif -- clear_inode(inode); --} -- --#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) --static int yaffs_file_flush(struct file *file, fl_owner_t id) --#else --static int yaffs_file_flush(struct file *file) --#endif --{ -- yaffs_Object *obj = yaffs_DentryToObject(file->f_dentry); -- -- yaffs_Device *dev = obj->myDev; -- -- T(YAFFS_TRACE_OS, -- ("yaffs_file_flush object %d (%s)\n", obj->objectId, -- obj->dirty ? "dirty" : "clean")); -- -- yaffs_GrossLock(dev); -- -- yaffs_FlushFile(obj, 1); -- -- yaffs_GrossUnlock(dev); -- -- return 0; --} -- --static int yaffs_readpage_nolock(struct file *f, struct page *pg) --{ -- /* Lifted from jffs2 */ -- -- yaffs_Object *obj; -- unsigned char *pg_buf; -- int ret; -- -- yaffs_Device *dev; -- -- T(YAFFS_TRACE_OS, ("yaffs_readpage at %08x, size %08x\n", -- (unsigned)(pg->index << PAGE_CACHE_SHIFT), -- (unsigned)PAGE_CACHE_SIZE)); -- -- obj = yaffs_DentryToObject(f->f_dentry); -- -- dev = obj->myDev; -- --#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) -- BUG_ON(!PageLocked(pg)); --#else -- if (!PageLocked(pg)) -- PAGE_BUG(pg); --#endif -- -- pg_buf = kmap(pg); -- /* FIXME: Can kmap fail? */ -- -- yaffs_GrossLock(dev); -- -- ret = yaffs_ReadDataFromFile(obj, pg_buf, -- pg->index << PAGE_CACHE_SHIFT, -- PAGE_CACHE_SIZE); -- -- yaffs_GrossUnlock(dev); -- -- if (ret >= 0) -- ret = 0; -- -- if (ret) { -- ClearPageUptodate(pg); -- SetPageError(pg); -- } else { -- SetPageUptodate(pg); -- ClearPageError(pg); -- } -- -- flush_dcache_page(pg); -- kunmap(pg); -- -- T(YAFFS_TRACE_OS, ("yaffs_readpage done\n")); -- return ret; --} -- --static int yaffs_readpage_unlock(struct file *f, struct page *pg) --{ -- int ret = yaffs_readpage_nolock(f, pg); -- UnlockPage(pg); -- return ret; --} -- --static int yaffs_readpage(struct file *f, struct page *pg) --{ -- return yaffs_readpage_unlock(f, pg); --} -- --/* writepage inspired by/stolen from smbfs */ -- --#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) --static int yaffs_writepage(struct page *page, struct writeback_control *wbc) --#else --static int yaffs_writepage(struct page *page) --#endif --{ -- struct address_space *mapping = page->mapping; -- loff_t offset = (loff_t) page->index << PAGE_CACHE_SHIFT; -- struct inode *inode; -- unsigned long end_index; -- char *buffer; -- yaffs_Object *obj; -- int nWritten = 0; -- unsigned nBytes; -- -- if (!mapping) -- BUG(); -- inode = mapping->host; -- if (!inode) -- BUG(); -- -- if (offset > inode->i_size) { -- T(YAFFS_TRACE_OS, -- ("yaffs_writepage at %08x, inode size = %08x!!!\n", -- (unsigned)(page->index << PAGE_CACHE_SHIFT), -- (unsigned)inode->i_size)); -- T(YAFFS_TRACE_OS, -- (" -> don't care!!\n")); -- unlock_page(page); -- return 0; -- } -- -- end_index = inode->i_size >> PAGE_CACHE_SHIFT; -- -- /* easy case */ -- if (page->index < end_index) -- nBytes = PAGE_CACHE_SIZE; -- else -- nBytes = inode->i_size & (PAGE_CACHE_SIZE - 1); -- -- get_page(page); -- -- buffer = kmap(page); -- -- obj = yaffs_InodeToObject(inode); -- yaffs_GrossLock(obj->myDev); -- -- T(YAFFS_TRACE_OS, -- ("yaffs_writepage at %08x, size %08x\n", -- (unsigned)(page->index << PAGE_CACHE_SHIFT), nBytes)); -- T(YAFFS_TRACE_OS, -- ("writepag0: obj = %05x, ino = %05x\n", -- (int)obj->variant.fileVariant.fileSize, (int)inode->i_size)); -- -- nWritten = yaffs_WriteDataToFile(obj, buffer, -- page->index << PAGE_CACHE_SHIFT, nBytes, 0); -- -- T(YAFFS_TRACE_OS, -- ("writepag1: obj = %05x, ino = %05x\n", -- (int)obj->variant.fileVariant.fileSize, (int)inode->i_size)); -- -- yaffs_GrossUnlock(obj->myDev); -- -- kunmap(page); -- SetPageUptodate(page); -- UnlockPage(page); -- put_page(page); -- -- return (nWritten == nBytes) ? 0 : -ENOSPC; --} -- -- --#if (YAFFS_USE_WRITE_BEGIN_END > 0) --static int yaffs_write_begin(struct file *filp, struct address_space *mapping, -- loff_t pos, unsigned len, unsigned flags, -- struct page **pagep, void **fsdata) --{ -- struct page *pg = NULL; -- pgoff_t index = pos >> PAGE_CACHE_SHIFT; -- uint32_t offset = pos & (PAGE_CACHE_SIZE - 1); -- uint32_t to = offset + len; -- -- int ret = 0; -- int space_held = 0; -- -- T(YAFFS_TRACE_OS, ("start yaffs_write_begin\n")); -- /* Get a page */ --#if LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 28) -- pg = grab_cache_page_write_begin(mapping, index, flags); --#else -- pg = __grab_cache_page(mapping, index); --#endif -- -- *pagep = pg; -- if (!pg) { -- ret = -ENOMEM; -- goto out; -- } -- /* Get fs space */ -- space_held = yaffs_hold_space(filp); -- -- if (!space_held) { -- ret = -ENOSPC; -- goto out; -- } -- -- /* Update page if required */ -- -- if (!Page_Uptodate(pg) && (offset || to < PAGE_CACHE_SIZE)) -- ret = yaffs_readpage_nolock(filp, pg); -- -- if (ret) -- goto out; -- -- /* Happy path return */ -- T(YAFFS_TRACE_OS, ("end yaffs_write_begin - ok\n")); -- -- return 0; -- --out: -- T(YAFFS_TRACE_OS, ("end yaffs_write_begin fail returning %d\n", ret)); -- if (space_held) -- yaffs_release_space(filp); -- if (pg) { -- unlock_page(pg); -- page_cache_release(pg); -- } -- return ret; --} -- --#else -- --static int yaffs_prepare_write(struct file *f, struct page *pg, -- unsigned offset, unsigned to) --{ -- T(YAFFS_TRACE_OS, ("yaffs_prepair_write\n")); -- -- if (!Page_Uptodate(pg) && (offset || to < PAGE_CACHE_SIZE)) -- return yaffs_readpage_nolock(f, pg); -- return 0; --} --#endif -- --#if (YAFFS_USE_WRITE_BEGIN_END > 0) --static int yaffs_write_end(struct file *filp, struct address_space *mapping, -- loff_t pos, unsigned len, unsigned copied, -- struct page *pg, void *fsdadata) --{ -- int ret = 0; -- void *addr, *kva; -- uint32_t offset_into_page = pos & (PAGE_CACHE_SIZE - 1); -- -- kva = kmap(pg); -- addr = kva + offset_into_page; -- -- T(YAFFS_TRACE_OS, -- ("yaffs_write_end addr %x pos %x nBytes %d\n", -- (unsigned) addr, -- (int)pos, copied)); -- -- ret = yaffs_file_write(filp, addr, copied, &pos); -- -- if (ret != copied) { -- T(YAFFS_TRACE_OS, -- ("yaffs_write_end not same size ret %d copied %d\n", -- ret, copied)); -- SetPageError(pg); -- ClearPageUptodate(pg); -- } else { -- SetPageUptodate(pg); -- } -- -- kunmap(pg); -- -- yaffs_release_space(filp); -- unlock_page(pg); -- page_cache_release(pg); -- return ret; --} --#else -- --static int yaffs_commit_write(struct file *f, struct page *pg, unsigned offset, -- unsigned to) --{ -- void *addr, *kva; -- -- loff_t pos = (((loff_t) pg->index) << PAGE_CACHE_SHIFT) + offset; -- int nBytes = to - offset; -- int nWritten; -- -- unsigned spos = pos; -- unsigned saddr; -- -- kva = kmap(pg); -- addr = kva + offset; -- -- saddr = (unsigned) addr; -- -- T(YAFFS_TRACE_OS, -- ("yaffs_commit_write addr %x pos %x nBytes %d\n", -- saddr, spos, nBytes)); -- -- nWritten = yaffs_file_write(f, addr, nBytes, &pos); -- -- if (nWritten != nBytes) { -- T(YAFFS_TRACE_OS, -- ("yaffs_commit_write not same size nWritten %d nBytes %d\n", -- nWritten, nBytes)); -- SetPageError(pg); -- ClearPageUptodate(pg); -- } else { -- SetPageUptodate(pg); -- } -- -- kunmap(pg); -- -- T(YAFFS_TRACE_OS, -- ("yaffs_commit_write returning %d\n", -- nWritten == nBytes ? 0 : nWritten)); -- -- return nWritten == nBytes ? 0 : nWritten; --} --#endif -- -- --static void yaffs_FillInodeFromObject(struct inode *inode, yaffs_Object *obj) --{ -- if (inode && obj) { -- -- -- /* Check mode against the variant type and attempt to repair if broken. */ -- __u32 mode = obj->yst_mode; -- switch (obj->variantType) { -- case YAFFS_OBJECT_TYPE_FILE: -- if (!S_ISREG(mode)) { -- obj->yst_mode &= ~S_IFMT; -- obj->yst_mode |= S_IFREG; -- } -- -- break; -- case YAFFS_OBJECT_TYPE_SYMLINK: -- if (!S_ISLNK(mode)) { -- obj->yst_mode &= ~S_IFMT; -- obj->yst_mode |= S_IFLNK; -- } -- -- break; -- case YAFFS_OBJECT_TYPE_DIRECTORY: -- if (!S_ISDIR(mode)) { -- obj->yst_mode &= ~S_IFMT; -- obj->yst_mode |= S_IFDIR; -- } -- -- break; -- case YAFFS_OBJECT_TYPE_UNKNOWN: -- case YAFFS_OBJECT_TYPE_HARDLINK: -- case YAFFS_OBJECT_TYPE_SPECIAL: -- default: -- /* TODO? */ -- break; -- } -- -- inode->i_flags |= S_NOATIME; -- -- inode->i_ino = obj->objectId; -- inode->i_mode = obj->yst_mode; -- inode->i_uid = obj->yst_uid; -- inode->i_gid = obj->yst_gid; --#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 19)) -- inode->i_blksize = inode->i_sb->s_blocksize; --#endif --#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) -- -- inode->i_rdev = old_decode_dev(obj->yst_rdev); -- inode->i_atime.tv_sec = (time_t) (obj->yst_atime); -- inode->i_atime.tv_nsec = 0; -- inode->i_mtime.tv_sec = (time_t) obj->yst_mtime; -- inode->i_mtime.tv_nsec = 0; -- inode->i_ctime.tv_sec = (time_t) obj->yst_ctime; -- inode->i_ctime.tv_nsec = 0; --#else -- inode->i_rdev = obj->yst_rdev; -- inode->i_atime = obj->yst_atime; -- inode->i_mtime = obj->yst_mtime; -- inode->i_ctime = obj->yst_ctime; --#endif -- inode->i_size = yaffs_GetObjectFileLength(obj); -- inode->i_blocks = (inode->i_size + 511) >> 9; -- -- inode->i_nlink = yaffs_GetObjectLinkCount(obj); -- -- T(YAFFS_TRACE_OS, -- ("yaffs_FillInode mode %x uid %d gid %d size %d count %d\n", -- inode->i_mode, inode->i_uid, inode->i_gid, -- (int)inode->i_size, atomic_read(&inode->i_count))); -- -- switch (obj->yst_mode & S_IFMT) { -- default: /* fifo, device or socket */ --#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) -- init_special_inode(inode, obj->yst_mode, -- old_decode_dev(obj->yst_rdev)); --#else -- init_special_inode(inode, obj->yst_mode, -- (dev_t) (obj->yst_rdev)); --#endif -- break; -- case S_IFREG: /* file */ -- inode->i_op = &yaffs_file_inode_operations; -- inode->i_fop = &yaffs_file_operations; -- inode->i_mapping->a_ops = -- &yaffs_file_address_operations; -- break; -- case S_IFDIR: /* directory */ -- inode->i_op = &yaffs_dir_inode_operations; -- inode->i_fop = &yaffs_dir_operations; -- break; -- case S_IFLNK: /* symlink */ -- inode->i_op = &yaffs_symlink_inode_operations; -- break; -- } -- -- yaffs_InodeToObjectLV(inode) = obj; -- -- obj->myInode = inode; -- -- } else { -- T(YAFFS_TRACE_OS, -- ("yaffs_FileInode invalid parameters\n")); -- } -- --} -- --struct inode *yaffs_get_inode(struct super_block *sb, int mode, int dev, -- yaffs_Object *obj) --{ -- struct inode *inode; -- -- if (!sb) { -- T(YAFFS_TRACE_OS, -- ("yaffs_get_inode for NULL super_block!!\n")); -- return NULL; -- -- } -- -- if (!obj) { -- T(YAFFS_TRACE_OS, -- ("yaffs_get_inode for NULL object!!\n")); -- return NULL; -- -- } -- -- T(YAFFS_TRACE_OS, -- ("yaffs_get_inode for object %d\n", obj->objectId)); -- -- inode = Y_IGET(sb, obj->objectId); -- if (IS_ERR(inode)) -- return NULL; -- -- /* NB Side effect: iget calls back to yaffs_read_inode(). */ -- /* iget also increments the inode's i_count */ -- /* NB You can't be holding grossLock or deadlock will happen! */ -- -- return inode; --} -- --static ssize_t yaffs_file_write(struct file *f, const char *buf, size_t n, -- loff_t *pos) --{ -- yaffs_Object *obj; -- int nWritten, ipos; -- struct inode *inode; -- yaffs_Device *dev; -- -- obj = yaffs_DentryToObject(f->f_dentry); -- -- dev = obj->myDev; -- -- yaffs_GrossLock(dev); -- -- inode = f->f_dentry->d_inode; -- -- if (!S_ISBLK(inode->i_mode) && f->f_flags & O_APPEND) -- ipos = inode->i_size; -- else -- ipos = *pos; -- -- if (!obj) -- T(YAFFS_TRACE_OS, -- ("yaffs_file_write: hey obj is null!\n")); -- else -- T(YAFFS_TRACE_OS, -- ("yaffs_file_write about to write writing %zu bytes" -- "to object %d at %d\n", -- n, obj->objectId, ipos)); -- -- nWritten = yaffs_WriteDataToFile(obj, buf, ipos, n, 0); -- -- T(YAFFS_TRACE_OS, -- ("yaffs_file_write writing %zu bytes, %d written at %d\n", -- n, nWritten, ipos)); -- -- if (nWritten > 0) { -- ipos += nWritten; -- *pos = ipos; -- if (ipos > inode->i_size) { -- inode->i_size = ipos; -- inode->i_blocks = (ipos + 511) >> 9; -- -- T(YAFFS_TRACE_OS, -- ("yaffs_file_write size updated to %d bytes, " -- "%d blocks\n", -- ipos, (int)(inode->i_blocks))); -- } -- -- } -- yaffs_GrossUnlock(dev); -- return nWritten == 0 ? -ENOSPC : nWritten; --} -- --/* Space holding and freeing is done to ensure we have space available for write_begin/end */ --/* For now we just assume few parallel writes and check against a small number. */ --/* Todo: need to do this with a counter to handle parallel reads better */ -- --static ssize_t yaffs_hold_space(struct file *f) --{ -- yaffs_Object *obj; -- yaffs_Device *dev; -- -- int nFreeChunks; -- -- -- obj = yaffs_DentryToObject(f->f_dentry); -- -- dev = obj->myDev; -- -- yaffs_GrossLock(dev); -- -- nFreeChunks = yaffs_GetNumberOfFreeChunks(dev); -- -- yaffs_GrossUnlock(dev); -- -- return (nFreeChunks > 20) ? 1 : 0; --} -- --static void yaffs_release_space(struct file *f) --{ -- yaffs_Object *obj; -- yaffs_Device *dev; -- -- -- obj = yaffs_DentryToObject(f->f_dentry); -- -- dev = obj->myDev; -- -- yaffs_GrossLock(dev); -- -- -- yaffs_GrossUnlock(dev); --} -- --static int yaffs_readdir(struct file *f, void *dirent, filldir_t filldir) --{ -- yaffs_Object *obj; -- yaffs_Device *dev; -- struct inode *inode = f->f_dentry->d_inode; -- unsigned long offset, curoffs; -- struct ylist_head *i; -- yaffs_Object *l; -- -- char name[YAFFS_MAX_NAME_LENGTH + 1]; -- -- obj = yaffs_DentryToObject(f->f_dentry); -- dev = obj->myDev; -- -- yaffs_GrossLock(dev); -- -- offset = f->f_pos; -- -- T(YAFFS_TRACE_OS, ("yaffs_readdir: starting at %d\n", (int)offset)); -- -- if (offset == 0) { -- T(YAFFS_TRACE_OS, -- ("yaffs_readdir: entry . ino %d \n", -- (int)inode->i_ino)); -- if (filldir(dirent, ".", 1, offset, inode->i_ino, DT_DIR) < 0) -- goto out; -- offset++; -- f->f_pos++; -- } -- if (offset == 1) { -- T(YAFFS_TRACE_OS, -- ("yaffs_readdir: entry .. ino %d \n", -- (int)f->f_dentry->d_parent->d_inode->i_ino)); -- if (filldir(dirent, "..", 2, offset, -- f->f_dentry->d_parent->d_inode->i_ino, DT_DIR) < 0) -- goto out; -- offset++; -- f->f_pos++; -- } -- -- curoffs = 1; -- -- /* If the directory has changed since the open or last call to -- readdir, rewind to after the 2 canned entries. */ -- -- if (f->f_version != inode->i_version) { -- offset = 2; -- f->f_pos = offset; -- f->f_version = inode->i_version; -- } -- -- ylist_for_each(i, &obj->variant.directoryVariant.children) { -- curoffs++; -- if (curoffs >= offset) { -- l = ylist_entry(i, yaffs_Object, siblings); -- -- yaffs_GetObjectName(l, name, -- YAFFS_MAX_NAME_LENGTH + 1); -- T(YAFFS_TRACE_OS, -- ("yaffs_readdir: %s inode %d\n", name, -- yaffs_GetObjectInode(l))); -- -- if (filldir(dirent, -- name, -- strlen(name), -- offset, -- yaffs_GetObjectInode(l), -- yaffs_GetObjectType(l)) < 0) -- goto up_and_out; -- -- offset++; -- f->f_pos++; -- } -- } -- --up_and_out: --out: -- yaffs_GrossUnlock(dev); -- -- return 0; --} -- --/* -- * File creation. Allocate an inode, and we're done.. -- */ -- --#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 29) --#define YCRED(x) x --#else --#define YCRED(x) (x->cred) --#endif -- --#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) --static int yaffs_mknod(struct inode *dir, struct dentry *dentry, int mode, -- dev_t rdev) --#else --static int yaffs_mknod(struct inode *dir, struct dentry *dentry, int mode, -- int rdev) --#endif --{ -- struct inode *inode; -- -- yaffs_Object *obj = NULL; -- yaffs_Device *dev; -- -- yaffs_Object *parent = yaffs_InodeToObject(dir); -- -- int error = -ENOSPC; -- uid_t uid = YCRED(current)->fsuid; -- gid_t gid = (dir->i_mode & S_ISGID) ? dir->i_gid : YCRED(current)->fsgid; -- -- if ((dir->i_mode & S_ISGID) && S_ISDIR(mode)) -- mode |= S_ISGID; -- -- if (parent) { -- T(YAFFS_TRACE_OS, -- ("yaffs_mknod: parent object %d type %d\n", -- parent->objectId, parent->variantType)); -- } else { -- T(YAFFS_TRACE_OS, -- ("yaffs_mknod: could not get parent object\n")); -- return -EPERM; -- } -- -- T(YAFFS_TRACE_OS, ("yaffs_mknod: making oject for %s, " -- "mode %x dev %x\n", -- dentry->d_name.name, mode, rdev)); -- -- dev = parent->myDev; -- -- yaffs_GrossLock(dev); -- -- switch (mode & S_IFMT) { -- default: -- /* Special (socket, fifo, device...) */ -- T(YAFFS_TRACE_OS, ("yaffs_mknod: making special\n")); --#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) -- obj = yaffs_MknodSpecial(parent, dentry->d_name.name, mode, uid, -- gid, old_encode_dev(rdev)); --#else -- obj = yaffs_MknodSpecial(parent, dentry->d_name.name, mode, uid, -- gid, rdev); --#endif -- break; -- case S_IFREG: /* file */ -- T(YAFFS_TRACE_OS, ("yaffs_mknod: making file\n")); -- obj = yaffs_MknodFile(parent, dentry->d_name.name, mode, uid, -- gid); -- break; -- case S_IFDIR: /* directory */ -- T(YAFFS_TRACE_OS, -- ("yaffs_mknod: making directory\n")); -- obj = yaffs_MknodDirectory(parent, dentry->d_name.name, mode, -- uid, gid); -- break; -- case S_IFLNK: /* symlink */ -- T(YAFFS_TRACE_OS, ("yaffs_mknod: making symlink\n")); -- obj = NULL; /* Do we ever get here? */ -- break; -- } -- -- /* Can not call yaffs_get_inode() with gross lock held */ -- yaffs_GrossUnlock(dev); -- -- if (obj) { -- inode = yaffs_get_inode(dir->i_sb, mode, rdev, obj); -- d_instantiate(dentry, inode); -- T(YAFFS_TRACE_OS, -- ("yaffs_mknod created object %d count = %d\n", -- obj->objectId, atomic_read(&inode->i_count))); -- error = 0; -- } else { -- T(YAFFS_TRACE_OS, -- ("yaffs_mknod failed making object\n")); -- error = -ENOMEM; -- } -- -- return error; --} -- --static int yaffs_mkdir(struct inode *dir, struct dentry *dentry, int mode) --{ -- int retVal; -- T(YAFFS_TRACE_OS, ("yaffs_mkdir\n")); -- retVal = yaffs_mknod(dir, dentry, mode | S_IFDIR, 0); -- return retVal; --} -- --#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) --static int yaffs_create(struct inode *dir, struct dentry *dentry, int mode, -- struct nameidata *n) --#else --static int yaffs_create(struct inode *dir, struct dentry *dentry, int mode) --#endif --{ -- T(YAFFS_TRACE_OS, ("yaffs_create\n")); -- return yaffs_mknod(dir, dentry, mode | S_IFREG, 0); --} -- --static int yaffs_unlink(struct inode *dir, struct dentry *dentry) --{ -- int retVal; -- -- yaffs_Device *dev; -- -- T(YAFFS_TRACE_OS, -- ("yaffs_unlink %d:%s\n", (int)(dir->i_ino), -- dentry->d_name.name)); -- -- dev = yaffs_InodeToObject(dir)->myDev; -- -- yaffs_GrossLock(dev); -- -- retVal = yaffs_Unlink(yaffs_InodeToObject(dir), dentry->d_name.name); -- -- if (retVal == YAFFS_OK) { -- dentry->d_inode->i_nlink--; -- dir->i_version++; -- yaffs_GrossUnlock(dev); -- mark_inode_dirty(dentry->d_inode); -- return 0; -- } -- yaffs_GrossUnlock(dev); -- return -ENOTEMPTY; --} -- --/* -- * Create a link... -- */ --static int yaffs_link(struct dentry *old_dentry, struct inode *dir, -- struct dentry *dentry) --{ -- struct inode *inode = old_dentry->d_inode; -- yaffs_Object *obj = NULL; -- yaffs_Object *link = NULL; -- yaffs_Device *dev; -- -- T(YAFFS_TRACE_OS, ("yaffs_link\n")); -- -- obj = yaffs_InodeToObject(inode); -- dev = obj->myDev; -- -- yaffs_GrossLock(dev); -- -- if (!S_ISDIR(inode->i_mode)) /* Don't link directories */ -- link = yaffs_Link(yaffs_InodeToObject(dir), dentry->d_name.name, -- obj); -- -- if (link) { -- old_dentry->d_inode->i_nlink = yaffs_GetObjectLinkCount(obj); -- d_instantiate(dentry, old_dentry->d_inode); -- atomic_inc(&old_dentry->d_inode->i_count); -- T(YAFFS_TRACE_OS, -- ("yaffs_link link count %d i_count %d\n", -- old_dentry->d_inode->i_nlink, -- atomic_read(&old_dentry->d_inode->i_count))); -- } -- -- yaffs_GrossUnlock(dev); -- -- if (link) -- return 0; -- -- return -EPERM; --} -- --static int yaffs_symlink(struct inode *dir, struct dentry *dentry, -- const char *symname) --{ -- yaffs_Object *obj; -- yaffs_Device *dev; -- uid_t uid = YCRED(current)->fsuid; -- gid_t gid = (dir->i_mode & S_ISGID) ? dir->i_gid : YCRED(current)->fsgid; -- -- T(YAFFS_TRACE_OS, ("yaffs_symlink\n")); -- -- dev = yaffs_InodeToObject(dir)->myDev; -- yaffs_GrossLock(dev); -- obj = yaffs_MknodSymLink(yaffs_InodeToObject(dir), dentry->d_name.name, -- S_IFLNK | S_IRWXUGO, uid, gid, symname); -- yaffs_GrossUnlock(dev); -- -- if (obj) { -- struct inode *inode; -- -- inode = yaffs_get_inode(dir->i_sb, obj->yst_mode, 0, obj); -- d_instantiate(dentry, inode); -- T(YAFFS_TRACE_OS, ("symlink created OK\n")); -- return 0; -- } else { -- T(YAFFS_TRACE_OS, ("symlink not created\n")); -- } -- -- return -ENOMEM; --} -- --static int yaffs_sync_object(struct file *file, struct dentry *dentry, -- int datasync) --{ -- -- yaffs_Object *obj; -- yaffs_Device *dev; -- -- obj = yaffs_DentryToObject(dentry); -- -- dev = obj->myDev; -- -- T(YAFFS_TRACE_OS, ("yaffs_sync_object\n")); -- yaffs_GrossLock(dev); -- yaffs_FlushFile(obj, 1); -- yaffs_GrossUnlock(dev); -- return 0; --} -- --/* -- * The VFS layer already does all the dentry stuff for rename. -- * -- * NB: POSIX says you can rename an object over an old object of the same name -- */ --static int yaffs_rename(struct inode *old_dir, struct dentry *old_dentry, -- struct inode *new_dir, struct dentry *new_dentry) --{ -- yaffs_Device *dev; -- int retVal = YAFFS_FAIL; -- yaffs_Object *target; -- -- T(YAFFS_TRACE_OS, ("yaffs_rename\n")); -- dev = yaffs_InodeToObject(old_dir)->myDev; -- -- yaffs_GrossLock(dev); -- -- /* Check if the target is an existing directory that is not empty. */ -- target = yaffs_FindObjectByName(yaffs_InodeToObject(new_dir), -- new_dentry->d_name.name); -- -- -- -- if (target && target->variantType == YAFFS_OBJECT_TYPE_DIRECTORY && -- !ylist_empty(&target->variant.directoryVariant.children)) { -- -- T(YAFFS_TRACE_OS, ("target is non-empty dir\n")); -- -- retVal = YAFFS_FAIL; -- } else { -- /* Now does unlinking internally using shadowing mechanism */ -- T(YAFFS_TRACE_OS, ("calling yaffs_RenameObject\n")); -- -- retVal = yaffs_RenameObject(yaffs_InodeToObject(old_dir), -- old_dentry->d_name.name, -- yaffs_InodeToObject(new_dir), -- new_dentry->d_name.name); -- } -- yaffs_GrossUnlock(dev); -- -- if (retVal == YAFFS_OK) { -- if (target) { -- new_dentry->d_inode->i_nlink--; -- mark_inode_dirty(new_dentry->d_inode); -- } -- -- return 0; -- } else { -- return -ENOTEMPTY; -- } --} -- --static int yaffs_setattr(struct dentry *dentry, struct iattr *attr) --{ -- struct inode *inode = dentry->d_inode; -- int error; -- yaffs_Device *dev; -- -- T(YAFFS_TRACE_OS, -- ("yaffs_setattr of object %d\n", -- yaffs_InodeToObject(inode)->objectId)); -- -- error = inode_change_ok(inode, attr); -- if (error == 0) { -- dev = yaffs_InodeToObject(inode)->myDev; -- yaffs_GrossLock(dev); -- if (yaffs_SetAttributes(yaffs_InodeToObject(inode), attr) == -- YAFFS_OK) { -- error = 0; -- } else { -- error = -EPERM; -- } -- yaffs_GrossUnlock(dev); -- if (!error) -- error = inode_setattr(inode, attr); -- } -- return error; --} -- --#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) --static int yaffs_statfs(struct dentry *dentry, struct kstatfs *buf) --{ -- yaffs_Device *dev = yaffs_DentryToObject(dentry)->myDev; -- struct super_block *sb = dentry->d_sb; --#elif (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) --static int yaffs_statfs(struct super_block *sb, struct kstatfs *buf) --{ -- yaffs_Device *dev = yaffs_SuperToDevice(sb); --#else --static int yaffs_statfs(struct super_block *sb, struct statfs *buf) --{ -- yaffs_Device *dev = yaffs_SuperToDevice(sb); --#endif -- -- T(YAFFS_TRACE_OS, ("yaffs_statfs\n")); -- -- yaffs_GrossLock(dev); -- -- buf->f_type = YAFFS_MAGIC; -- buf->f_bsize = sb->s_blocksize; -- buf->f_namelen = 255; -- -- if (dev->nDataBytesPerChunk & (dev->nDataBytesPerChunk - 1)) { -- /* Do this if chunk size is not a power of 2 */ -- -- uint64_t bytesInDev; -- uint64_t bytesFree; -- -- bytesInDev = ((uint64_t)((dev->endBlock - dev->startBlock + 1))) * -- ((uint64_t)(dev->nChunksPerBlock * dev->nDataBytesPerChunk)); -- -- do_div(bytesInDev, sb->s_blocksize); /* bytesInDev becomes the number of blocks */ -- buf->f_blocks = bytesInDev; -- -- bytesFree = ((uint64_t)(yaffs_GetNumberOfFreeChunks(dev))) * -- ((uint64_t)(dev->nDataBytesPerChunk)); -- -- do_div(bytesFree, sb->s_blocksize); -- -- buf->f_bfree = bytesFree; -- -- } else if (sb->s_blocksize > dev->nDataBytesPerChunk) { -- -- buf->f_blocks = -- (dev->endBlock - dev->startBlock + 1) * -- dev->nChunksPerBlock / -- (sb->s_blocksize / dev->nDataBytesPerChunk); -- buf->f_bfree = -- yaffs_GetNumberOfFreeChunks(dev) / -- (sb->s_blocksize / dev->nDataBytesPerChunk); -- } else { -- buf->f_blocks = -- (dev->endBlock - dev->startBlock + 1) * -- dev->nChunksPerBlock * -- (dev->nDataBytesPerChunk / sb->s_blocksize); -- -- buf->f_bfree = -- yaffs_GetNumberOfFreeChunks(dev) * -- (dev->nDataBytesPerChunk / sb->s_blocksize); -- } -- -- buf->f_files = 0; -- buf->f_ffree = 0; -- buf->f_bavail = buf->f_bfree; -- -- yaffs_GrossUnlock(dev); -- return 0; --} -- -- --static int yaffs_do_sync_fs(struct super_block *sb) --{ -- -- yaffs_Device *dev = yaffs_SuperToDevice(sb); -- T(YAFFS_TRACE_OS, ("yaffs_do_sync_fs\n")); -- -- if (sb->s_dirt) { -- yaffs_GrossLock(dev); -- -- if (dev) { -- yaffs_FlushEntireDeviceCache(dev); -- yaffs_CheckpointSave(dev); -- } -- -- yaffs_GrossUnlock(dev); -- -- sb->s_dirt = 0; -- } -- return 0; --} -- -- --#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) --static void yaffs_write_super(struct super_block *sb) --#else --static int yaffs_write_super(struct super_block *sb) --#endif --{ -- -- T(YAFFS_TRACE_OS, ("yaffs_write_super\n")); -- if (yaffs_auto_checkpoint >= 2) -- yaffs_do_sync_fs(sb); --#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 18)) -- return 0; --#endif --} -- -- --#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) --static int yaffs_sync_fs(struct super_block *sb, int wait) --#else --static int yaffs_sync_fs(struct super_block *sb) --#endif --{ -- T(YAFFS_TRACE_OS, ("yaffs_sync_fs\n")); -- -- if (yaffs_auto_checkpoint >= 1) -- yaffs_do_sync_fs(sb); -- -- return 0; --} -- --#ifdef YAFFS_USE_OWN_IGET -- --static struct inode *yaffs_iget(struct super_block *sb, unsigned long ino) --{ -- struct inode *inode; -- yaffs_Object *obj; -- yaffs_Device *dev = yaffs_SuperToDevice(sb); -- -- T(YAFFS_TRACE_OS, -- ("yaffs_iget for %lu\n", ino)); -- -- inode = iget_locked(sb, ino); -- if (!inode) -- return ERR_PTR(-ENOMEM); -- if (!(inode->i_state & I_NEW)) -- return inode; -- -- /* NB This is called as a side effect of other functions, but -- * we had to release the lock to prevent deadlocks, so -- * need to lock again. -- */ -- -- yaffs_GrossLock(dev); -- -- obj = yaffs_FindObjectByNumber(dev, inode->i_ino); -- -- yaffs_FillInodeFromObject(inode, obj); -- -- yaffs_GrossUnlock(dev); -- -- unlock_new_inode(inode); -- return inode; --} -- --#else -- --static void yaffs_read_inode(struct inode *inode) --{ -- /* NB This is called as a side effect of other functions, but -- * we had to release the lock to prevent deadlocks, so -- * need to lock again. -- */ -- -- yaffs_Object *obj; -- yaffs_Device *dev = yaffs_SuperToDevice(inode->i_sb); -- -- T(YAFFS_TRACE_OS, -- ("yaffs_read_inode for %d\n", (int)inode->i_ino)); -- -- yaffs_GrossLock(dev); -- -- obj = yaffs_FindObjectByNumber(dev, inode->i_ino); -- -- yaffs_FillInodeFromObject(inode, obj); -- -- yaffs_GrossUnlock(dev); --} -- --#endif -- --static YLIST_HEAD(yaffs_dev_list); -- --#if 0 /* not used */ --static int yaffs_remount_fs(struct super_block *sb, int *flags, char *data) --{ -- yaffs_Device *dev = yaffs_SuperToDevice(sb); -- -- if (*flags & MS_RDONLY) { -- struct mtd_info *mtd = yaffs_SuperToDevice(sb)->genericDevice; -- -- T(YAFFS_TRACE_OS, -- ("yaffs_remount_fs: %s: RO\n", dev->name)); -- -- yaffs_GrossLock(dev); -- -- yaffs_FlushEntireDeviceCache(dev); -- -- yaffs_CheckpointSave(dev); -- -- if (mtd->sync) -- mtd->sync(mtd); -- -- yaffs_GrossUnlock(dev); -- } else { -- T(YAFFS_TRACE_OS, -- ("yaffs_remount_fs: %s: RW\n", dev->name)); -- } -- -- return 0; --} --#endif -- --static void yaffs_put_super(struct super_block *sb) --{ -- yaffs_Device *dev = yaffs_SuperToDevice(sb); -- -- T(YAFFS_TRACE_OS, ("yaffs_put_super\n")); -- -- yaffs_GrossLock(dev); -- -- yaffs_FlushEntireDeviceCache(dev); -- -- yaffs_CheckpointSave(dev); -- -- if (dev->putSuperFunc) -- dev->putSuperFunc(sb); -- -- yaffs_Deinitialise(dev); -- -- yaffs_GrossUnlock(dev); -- -- /* we assume this is protected by lock_kernel() in mount/umount */ -- ylist_del(&dev->devList); -- -- if (dev->spareBuffer) { -- YFREE(dev->spareBuffer); -- dev->spareBuffer = NULL; -- } -- -- kfree(dev); --} -- -- --static void yaffs_MTDPutSuper(struct super_block *sb) --{ -- struct mtd_info *mtd = yaffs_SuperToDevice(sb)->genericDevice; -- -- if (mtd->sync) -- mtd->sync(mtd); -- -- put_mtd_device(mtd); --} -- -- --static void yaffs_MarkSuperBlockDirty(void *vsb) --{ -- struct super_block *sb = (struct super_block *)vsb; -- -- T(YAFFS_TRACE_OS, ("yaffs_MarkSuperBlockDirty() sb = %p\n", sb)); -- if (sb) -- sb->s_dirt = 1; --} -- --typedef struct { -- int inband_tags; -- int skip_checkpoint_read; -- int skip_checkpoint_write; -- int no_cache; --} yaffs_options; -- --#define MAX_OPT_LEN 20 --static int yaffs_parse_options(yaffs_options *options, const char *options_str) --{ -- char cur_opt[MAX_OPT_LEN + 1]; -- int p; -- int error = 0; -- -- /* Parse through the options which is a comma seperated list */ -- -- while (options_str && *options_str && !error) { -- memset(cur_opt, 0, MAX_OPT_LEN + 1); -- p = 0; -- -- while (*options_str && *options_str != ',') { -- if (p < MAX_OPT_LEN) { -- cur_opt[p] = *options_str; -- p++; -- } -- options_str++; -- } -- -- if (!strcmp(cur_opt, "inband-tags")) -- options->inband_tags = 1; -- else if (!strcmp(cur_opt, "no-cache")) -- options->no_cache = 1; -- else if (!strcmp(cur_opt, "no-checkpoint-read")) -- options->skip_checkpoint_read = 1; -- else if (!strcmp(cur_opt, "no-checkpoint-write")) -- options->skip_checkpoint_write = 1; -- else if (!strcmp(cur_opt, "no-checkpoint")) { -- options->skip_checkpoint_read = 1; -- options->skip_checkpoint_write = 1; -- } else { -- printk(KERN_INFO "yaffs: Bad mount option \"%s\"\n", -- cur_opt); -- error = 1; -- } -- } -- -- return error; --} -- --static struct super_block *yaffs_internal_read_super(int yaffsVersion, -- struct super_block *sb, -- void *data, int silent) --{ -- int nBlocks; -- struct inode *inode = NULL; -- struct dentry *root; -- yaffs_Device *dev = 0; -- char devname_buf[BDEVNAME_SIZE + 1]; -- struct mtd_info *mtd; -- int err; -- char *data_str = (char *)data; -- -- yaffs_options options; -- -- sb->s_magic = YAFFS_MAGIC; -- sb->s_op = &yaffs_super_ops; -- sb->s_flags |= MS_NOATIME; -- -- if (!sb) -- printk(KERN_INFO "yaffs: sb is NULL\n"); -- else if (!sb->s_dev) -- printk(KERN_INFO "yaffs: sb->s_dev is NULL\n"); -- else if (!yaffs_devname(sb, devname_buf)) -- printk(KERN_INFO "yaffs: devname is NULL\n"); -- else -- printk(KERN_INFO "yaffs: dev is %d name is \"%s\"\n", -- sb->s_dev, -- yaffs_devname(sb, devname_buf)); -- -- if (!data_str) -- data_str = ""; -- -- printk(KERN_INFO "yaffs: passed flags \"%s\"\n", data_str); -- -- memset(&options, 0, sizeof(options)); -- -- if (yaffs_parse_options(&options, data_str)) { -- /* Option parsing failed */ -- return NULL; -- } -- -- -- sb->s_blocksize = PAGE_CACHE_SIZE; -- sb->s_blocksize_bits = PAGE_CACHE_SHIFT; -- T(YAFFS_TRACE_OS, ("yaffs_read_super: Using yaffs%d\n", yaffsVersion)); -- T(YAFFS_TRACE_OS, -- ("yaffs_read_super: block size %d\n", (int)(sb->s_blocksize))); -- --#ifdef CONFIG_YAFFS_DISABLE_WRITE_VERIFY -- T(YAFFS_TRACE_OS, -- ("yaffs: Write verification disabled. All guarantees " -- "null and void\n")); --#endif -- -- T(YAFFS_TRACE_ALWAYS, ("yaffs: Attempting MTD mount on %u.%u, " -- "\"%s\"\n", -- MAJOR(sb->s_dev), MINOR(sb->s_dev), -- yaffs_devname(sb, devname_buf))); -- -- /* Check it's an mtd device..... */ -- if (MAJOR(sb->s_dev) != MTD_BLOCK_MAJOR) -- return NULL; /* This isn't an mtd device */ -- -- /* Get the device */ -- mtd = get_mtd_device(NULL, MINOR(sb->s_dev)); -- if (!mtd) { -- T(YAFFS_TRACE_ALWAYS, -- ("yaffs: MTD device #%u doesn't appear to exist\n", -- MINOR(sb->s_dev))); -- return NULL; -- } -- /* Check it's NAND */ -- if (mtd->type != MTD_NANDFLASH) { -- T(YAFFS_TRACE_ALWAYS, -- ("yaffs: MTD device is not NAND it's type %d\n", mtd->type)); -- return NULL; -- } -- -- T(YAFFS_TRACE_OS, (" erase %p\n", mtd->erase)); -- T(YAFFS_TRACE_OS, (" read %p\n", mtd->read)); -- T(YAFFS_TRACE_OS, (" write %p\n", mtd->write)); -- T(YAFFS_TRACE_OS, (" readoob %p\n", mtd->read_oob)); -- T(YAFFS_TRACE_OS, (" writeoob %p\n", mtd->write_oob)); -- T(YAFFS_TRACE_OS, (" block_isbad %p\n", mtd->block_isbad)); -- T(YAFFS_TRACE_OS, (" block_markbad %p\n", mtd->block_markbad)); -- T(YAFFS_TRACE_OS, (" %s %d\n", WRITE_SIZE_STR, WRITE_SIZE(mtd))); -- T(YAFFS_TRACE_OS, (" oobsize %d\n", mtd->oobsize)); -- T(YAFFS_TRACE_OS, (" erasesize %d\n", mtd->erasesize)); --#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 29) -- T(YAFFS_TRACE_OS, (" size %u\n", mtd->size)); --#else -- T(YAFFS_TRACE_OS, (" size %lld\n", mtd->size)); --#endif -- --#ifdef CONFIG_YAFFS_AUTO_YAFFS2 -- -- if (yaffsVersion == 1 && WRITE_SIZE(mtd) >= 2048) { -- T(YAFFS_TRACE_ALWAYS, ("yaffs: auto selecting yaffs2\n")); -- yaffsVersion = 2; -- } -- -- /* Added NCB 26/5/2006 for completeness */ -- if (yaffsVersion == 2 && !options.inband_tags && WRITE_SIZE(mtd) == 512) { -- T(YAFFS_TRACE_ALWAYS, ("yaffs: auto selecting yaffs1\n")); -- yaffsVersion = 1; -- } -- --#endif -- -- if (yaffsVersion == 2) { -- /* Check for version 2 style functions */ -- if (!mtd->erase || -- !mtd->block_isbad || -- !mtd->block_markbad || -- !mtd->read || -- !mtd->write || --#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) -- !mtd->read_oob || !mtd->write_oob) { --#else -- !mtd->write_ecc || -- !mtd->read_ecc || !mtd->read_oob || !mtd->write_oob) { --#endif -- T(YAFFS_TRACE_ALWAYS, -- ("yaffs: MTD device does not support required " -- "functions\n"));; -- return NULL; -- } -- -- if ((WRITE_SIZE(mtd) < YAFFS_MIN_YAFFS2_CHUNK_SIZE || -- mtd->oobsize < YAFFS_MIN_YAFFS2_SPARE_SIZE) && -- !options.inband_tags) { -- T(YAFFS_TRACE_ALWAYS, -- ("yaffs: MTD device does not have the " -- "right page sizes\n")); -- return NULL; -- } -- } else { -- /* Check for V1 style functions */ -- if (!mtd->erase || -- !mtd->read || -- !mtd->write || --#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) -- !mtd->read_oob || !mtd->write_oob) { --#else -- !mtd->write_ecc || -- !mtd->read_ecc || !mtd->read_oob || !mtd->write_oob) { --#endif -- T(YAFFS_TRACE_ALWAYS, -- ("yaffs: MTD device does not support required " -- "functions\n"));; -- return NULL; -- } -- -- if (WRITE_SIZE(mtd) < YAFFS_BYTES_PER_CHUNK || -- mtd->oobsize != YAFFS_BYTES_PER_SPARE) { -- T(YAFFS_TRACE_ALWAYS, -- ("yaffs: MTD device does not support have the " -- "right page sizes\n")); -- return NULL; -- } -- } -- -- /* OK, so if we got here, we have an MTD that's NAND and looks -- * like it has the right capabilities -- * Set the yaffs_Device up for mtd -- */ -- --#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) -- sb->s_fs_info = dev = kmalloc(sizeof(yaffs_Device), GFP_KERNEL); --#else -- sb->u.generic_sbp = dev = kmalloc(sizeof(yaffs_Device), GFP_KERNEL); --#endif -- if (!dev) { -- /* Deep shit could not allocate device structure */ -- T(YAFFS_TRACE_ALWAYS, -- ("yaffs_read_super: Failed trying to allocate " -- "yaffs_Device. \n")); -- return NULL; -- } -- -- memset(dev, 0, sizeof(yaffs_Device)); -- dev->genericDevice = mtd; -- dev->name = mtd->name; -- -- /* Set up the memory size parameters.... */ -- -- nBlocks = YCALCBLOCKS(mtd->size, (YAFFS_CHUNKS_PER_BLOCK * YAFFS_BYTES_PER_CHUNK)); -- -- dev->startBlock = 0; -- dev->endBlock = nBlocks - 1; -- dev->nChunksPerBlock = YAFFS_CHUNKS_PER_BLOCK; -- dev->totalBytesPerChunk = YAFFS_BYTES_PER_CHUNK; -- dev->nReservedBlocks = 5; -- dev->nShortOpCaches = (options.no_cache) ? 0 : 10; -- dev->inbandTags = options.inband_tags; -- -- /* ... and the functions. */ -- if (yaffsVersion == 2) { -- dev->writeChunkWithTagsToNAND = -- nandmtd2_WriteChunkWithTagsToNAND; -- dev->readChunkWithTagsFromNAND = -- nandmtd2_ReadChunkWithTagsFromNAND; -- dev->markNANDBlockBad = nandmtd2_MarkNANDBlockBad; -- dev->queryNANDBlock = nandmtd2_QueryNANDBlock; -- dev->spareBuffer = YMALLOC(mtd->oobsize); -- dev->isYaffs2 = 1; --#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) -- dev->totalBytesPerChunk = mtd->writesize; -- dev->nChunksPerBlock = mtd->erasesize / mtd->writesize; --#else -- dev->totalBytesPerChunk = mtd->oobblock; -- dev->nChunksPerBlock = mtd->erasesize / mtd->oobblock; --#endif -- nBlocks = YCALCBLOCKS(mtd->size, mtd->erasesize); -- -- dev->startBlock = 0; -- dev->endBlock = nBlocks - 1; -- } else { --#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) -- /* use the MTD interface in yaffs_mtdif1.c */ -- dev->writeChunkWithTagsToNAND = -- nandmtd1_WriteChunkWithTagsToNAND; -- dev->readChunkWithTagsFromNAND = -- nandmtd1_ReadChunkWithTagsFromNAND; -- dev->markNANDBlockBad = nandmtd1_MarkNANDBlockBad; -- dev->queryNANDBlock = nandmtd1_QueryNANDBlock; --#else -- dev->writeChunkToNAND = nandmtd_WriteChunkToNAND; -- dev->readChunkFromNAND = nandmtd_ReadChunkFromNAND; --#endif -- dev->isYaffs2 = 0; -- } -- /* ... and common functions */ -- dev->eraseBlockInNAND = nandmtd_EraseBlockInNAND; -- dev->initialiseNAND = nandmtd_InitialiseNAND; -- -- dev->putSuperFunc = yaffs_MTDPutSuper; -- -- dev->superBlock = (void *)sb; -- dev->markSuperBlockDirty = yaffs_MarkSuperBlockDirty; -- -- --#ifndef CONFIG_YAFFS_DOES_ECC -- dev->useNANDECC = 1; --#endif -- --#ifdef CONFIG_YAFFS_DISABLE_WIDE_TNODES -- dev->wideTnodesDisabled = 1; --#endif -- -- dev->skipCheckpointRead = options.skip_checkpoint_read; -- dev->skipCheckpointWrite = options.skip_checkpoint_write; -- -- /* we assume this is protected by lock_kernel() in mount/umount */ -- ylist_add_tail(&dev->devList, &yaffs_dev_list); -- -- init_MUTEX(&dev->grossLock); -- -- yaffs_GrossLock(dev); -- -- err = yaffs_GutsInitialise(dev); -- -- T(YAFFS_TRACE_OS, -- ("yaffs_read_super: guts initialised %s\n", -- (err == YAFFS_OK) ? "OK" : "FAILED")); -- -- /* Release lock before yaffs_get_inode() */ -- yaffs_GrossUnlock(dev); -- -- /* Create root inode */ -- if (err == YAFFS_OK) -- inode = yaffs_get_inode(sb, S_IFDIR | 0755, 0, -- yaffs_Root(dev)); -- -- if (!inode) -- return NULL; -- -- inode->i_op = &yaffs_dir_inode_operations; -- inode->i_fop = &yaffs_dir_operations; -- -- T(YAFFS_TRACE_OS, ("yaffs_read_super: got root inode\n")); -- -- root = d_alloc_root(inode); -- -- T(YAFFS_TRACE_OS, ("yaffs_read_super: d_alloc_root done\n")); -- -- if (!root) { -- iput(inode); -- return NULL; -- } -- sb->s_root = root; -- sb->s_dirt = !dev->isCheckpointed; -- T(YAFFS_TRACE_ALWAYS, -- ("yaffs_read_super: isCheckpointed %d\n", dev->isCheckpointed)); -- -- T(YAFFS_TRACE_OS, ("yaffs_read_super: done\n")); -- return sb; --} -- -- --#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) --static int yaffs_internal_read_super_mtd(struct super_block *sb, void *data, -- int silent) --{ -- return yaffs_internal_read_super(1, sb, data, silent) ? 0 : -EINVAL; --} -- --#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) --static int yaffs_read_super(struct file_system_type *fs, -- int flags, const char *dev_name, -- void *data, struct vfsmount *mnt) --{ -- -- return get_sb_bdev(fs, flags, dev_name, data, -- yaffs_internal_read_super_mtd, mnt); --} --#else --static struct super_block *yaffs_read_super(struct file_system_type *fs, -- int flags, const char *dev_name, -- void *data) --{ -- -- return get_sb_bdev(fs, flags, dev_name, data, -- yaffs_internal_read_super_mtd); --} --#endif -- --static struct file_system_type yaffs_fs_type = { -- .owner = THIS_MODULE, -- .name = "yaffs", -- .get_sb = yaffs_read_super, -- .kill_sb = kill_block_super, -- .fs_flags = FS_REQUIRES_DEV, --}; --#else --static struct super_block *yaffs_read_super(struct super_block *sb, void *data, -- int silent) --{ -- return yaffs_internal_read_super(1, sb, data, silent); --} -- --static DECLARE_FSTYPE(yaffs_fs_type, "yaffs", yaffs_read_super, -- FS_REQUIRES_DEV); --#endif -- -- --#ifdef CONFIG_YAFFS_YAFFS2 -- --#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) --static int yaffs2_internal_read_super_mtd(struct super_block *sb, void *data, -- int silent) --{ -- return yaffs_internal_read_super(2, sb, data, silent) ? 0 : -EINVAL; --} -- --#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) --static int yaffs2_read_super(struct file_system_type *fs, -- int flags, const char *dev_name, void *data, -- struct vfsmount *mnt) --{ -- return get_sb_bdev(fs, flags, dev_name, data, -- yaffs2_internal_read_super_mtd, mnt); --} --#else --static struct super_block *yaffs2_read_super(struct file_system_type *fs, -- int flags, const char *dev_name, -- void *data) --{ -- -- return get_sb_bdev(fs, flags, dev_name, data, -- yaffs2_internal_read_super_mtd); --} --#endif -- --static struct file_system_type yaffs2_fs_type = { -- .owner = THIS_MODULE, -- .name = "yaffs2", -- .get_sb = yaffs2_read_super, -- .kill_sb = kill_block_super, -- .fs_flags = FS_REQUIRES_DEV, --}; --#else --static struct super_block *yaffs2_read_super(struct super_block *sb, -- void *data, int silent) --{ -- return yaffs_internal_read_super(2, sb, data, silent); --} -- --static DECLARE_FSTYPE(yaffs2_fs_type, "yaffs2", yaffs2_read_super, -- FS_REQUIRES_DEV); --#endif -- --#endif /* CONFIG_YAFFS_YAFFS2 */ -- --static struct proc_dir_entry *my_proc_entry; -- --static char *yaffs_dump_dev(char *buf, yaffs_Device * dev) --{ -- buf += sprintf(buf, "startBlock......... %d\n", dev->startBlock); -- buf += sprintf(buf, "endBlock........... %d\n", dev->endBlock); -- buf += sprintf(buf, "totalBytesPerChunk. %d\n", dev->totalBytesPerChunk); -- buf += sprintf(buf, "nDataBytesPerChunk. %d\n", dev->nDataBytesPerChunk); -- buf += sprintf(buf, "chunkGroupBits..... %d\n", dev->chunkGroupBits); -- buf += sprintf(buf, "chunkGroupSize..... %d\n", dev->chunkGroupSize); -- buf += sprintf(buf, "nErasedBlocks...... %d\n", dev->nErasedBlocks); -- buf += sprintf(buf, "nReservedBlocks.... %d\n", dev->nReservedBlocks); -- buf += sprintf(buf, "blocksInCheckpoint. %d\n", dev->blocksInCheckpoint); -- buf += sprintf(buf, "nTnodesCreated..... %d\n", dev->nTnodesCreated); -- buf += sprintf(buf, "nFreeTnodes........ %d\n", dev->nFreeTnodes); -- buf += sprintf(buf, "nObjectsCreated.... %d\n", dev->nObjectsCreated); -- buf += sprintf(buf, "nFreeObjects....... %d\n", dev->nFreeObjects); -- buf += sprintf(buf, "nFreeChunks........ %d\n", dev->nFreeChunks); -- buf += sprintf(buf, "nPageWrites........ %d\n", dev->nPageWrites); -- buf += sprintf(buf, "nPageReads......... %d\n", dev->nPageReads); -- buf += sprintf(buf, "nBlockErasures..... %d\n", dev->nBlockErasures); -- buf += sprintf(buf, "nGCCopies.......... %d\n", dev->nGCCopies); -- buf += sprintf(buf, "garbageCollections. %d\n", dev->garbageCollections); -- buf += sprintf(buf, "passiveGCs......... %d\n", -- dev->passiveGarbageCollections); -- buf += sprintf(buf, "nRetriedWrites..... %d\n", dev->nRetriedWrites); -- buf += sprintf(buf, "nShortOpCaches..... %d\n", dev->nShortOpCaches); -- buf += sprintf(buf, "nRetireBlocks...... %d\n", dev->nRetiredBlocks); -- buf += sprintf(buf, "eccFixed........... %d\n", dev->eccFixed); -- buf += sprintf(buf, "eccUnfixed......... %d\n", dev->eccUnfixed); -- buf += sprintf(buf, "tagsEccFixed....... %d\n", dev->tagsEccFixed); -- buf += sprintf(buf, "tagsEccUnfixed..... %d\n", dev->tagsEccUnfixed); -- buf += sprintf(buf, "cacheHits.......... %d\n", dev->cacheHits); -- buf += sprintf(buf, "nDeletedFiles...... %d\n", dev->nDeletedFiles); -- buf += sprintf(buf, "nUnlinkedFiles..... %d\n", dev->nUnlinkedFiles); -- buf += -- sprintf(buf, "nBackgroudDeletions %d\n", dev->nBackgroundDeletions); -- buf += sprintf(buf, "useNANDECC......... %d\n", dev->useNANDECC); -- buf += sprintf(buf, "isYaffs2........... %d\n", dev->isYaffs2); -- buf += sprintf(buf, "inbandTags......... %d\n", dev->inbandTags); -- -- return buf; --} -- --static int yaffs_proc_read(char *page, -- char **start, -- off_t offset, int count, int *eof, void *data) --{ -- struct ylist_head *item; -- char *buf = page; -- int step = offset; -- int n = 0; -- -- /* Get proc_file_read() to step 'offset' by one on each sucessive call. -- * We use 'offset' (*ppos) to indicate where we are in devList. -- * This also assumes the user has posted a read buffer large -- * enough to hold the complete output; but that's life in /proc. -- */ -- -- *(int *)start = 1; -- -- /* Print header first */ -- if (step == 0) { -- buf += sprintf(buf, "YAFFS built:" __DATE__ " " __TIME__ -- "\n%s\n%s\n", yaffs_fs_c_version, -- yaffs_guts_c_version); -- } -- -- /* hold lock_kernel while traversing yaffs_dev_list */ -- lock_kernel(); -- -- /* Locate and print the Nth entry. Order N-squared but N is small. */ -- ylist_for_each(item, &yaffs_dev_list) { -- yaffs_Device *dev = ylist_entry(item, yaffs_Device, devList); -- if (n < step) { -- n++; -- continue; -- } -- buf += sprintf(buf, "\nDevice %d \"%s\"\n", n, dev->name); -- buf = yaffs_dump_dev(buf, dev); -- break; -- } -- unlock_kernel(); -- -- return buf - page < count ? buf - page : count; --} -- --/** -- * Set the verbosity of the warnings and error messages. -- * -- * Note that the names can only be a..z or _ with the current code. -- */ -- --static struct { -- char *mask_name; -- unsigned mask_bitfield; --} mask_flags[] = { -- {"allocate", YAFFS_TRACE_ALLOCATE}, -- {"always", YAFFS_TRACE_ALWAYS}, -- {"bad_blocks", YAFFS_TRACE_BAD_BLOCKS}, -- {"buffers", YAFFS_TRACE_BUFFERS}, -- {"bug", YAFFS_TRACE_BUG}, -- {"checkpt", YAFFS_TRACE_CHECKPOINT}, -- {"deletion", YAFFS_TRACE_DELETION}, -- {"erase", YAFFS_TRACE_ERASE}, -- {"error", YAFFS_TRACE_ERROR}, -- {"gc_detail", YAFFS_TRACE_GC_DETAIL}, -- {"gc", YAFFS_TRACE_GC}, -- {"mtd", YAFFS_TRACE_MTD}, -- {"nandaccess", YAFFS_TRACE_NANDACCESS}, -- {"os", YAFFS_TRACE_OS}, -- {"scan_debug", YAFFS_TRACE_SCAN_DEBUG}, -- {"scan", YAFFS_TRACE_SCAN}, -- {"tracing", YAFFS_TRACE_TRACING}, -- -- {"verify", YAFFS_TRACE_VERIFY}, -- {"verify_nand", YAFFS_TRACE_VERIFY_NAND}, -- {"verify_full", YAFFS_TRACE_VERIFY_FULL}, -- {"verify_all", YAFFS_TRACE_VERIFY_ALL}, -- -- {"write", YAFFS_TRACE_WRITE}, -- {"all", 0xffffffff}, -- {"none", 0}, -- {NULL, 0}, --}; -- --#define MAX_MASK_NAME_LENGTH 40 --static int yaffs_proc_write(struct file *file, const char *buf, -- unsigned long count, void *data) --{ -- unsigned rg = 0, mask_bitfield; -- char *end; -- char *mask_name; -- const char *x; -- char substring[MAX_MASK_NAME_LENGTH + 1]; -- int i; -- int done = 0; -- int add, len = 0; -- int pos = 0; -- -- rg = yaffs_traceMask; -- -- while (!done && (pos < count)) { -- done = 1; -- while ((pos < count) && isspace(buf[pos])) -- pos++; -- -- switch (buf[pos]) { -- case '+': -- case '-': -- case '=': -- add = buf[pos]; -- pos++; -- break; -- -- default: -- add = ' '; -- break; -- } -- mask_name = NULL; -- -- mask_bitfield = simple_strtoul(buf + pos, &end, 0); -- -- if (end > buf + pos) { -- mask_name = "numeral"; -- len = end - (buf + pos); -- pos += len; -- done = 0; -- } else { -- for (x = buf + pos, i = 0; -- (*x == '_' || (*x >= 'a' && *x <= 'z')) && -- i < MAX_MASK_NAME_LENGTH; x++, i++, pos++) -- substring[i] = *x; -- substring[i] = '\0'; -- -- for (i = 0; mask_flags[i].mask_name != NULL; i++) { -- if (strcmp(substring, mask_flags[i].mask_name) == 0) { -- mask_name = mask_flags[i].mask_name; -- mask_bitfield = mask_flags[i].mask_bitfield; -- done = 0; -- break; -- } -- } -- } -- -- if (mask_name != NULL) { -- done = 0; -- switch (add) { -- case '-': -- rg &= ~mask_bitfield; -- break; -- case '+': -- rg |= mask_bitfield; -- break; -- case '=': -- rg = mask_bitfield; -- break; -- default: -- rg |= mask_bitfield; -- break; -- } -- } -- } -- -- yaffs_traceMask = rg | YAFFS_TRACE_ALWAYS; -- -- printk(KERN_DEBUG "new trace = 0x%08X\n", yaffs_traceMask); -- -- if (rg & YAFFS_TRACE_ALWAYS) { -- for (i = 0; mask_flags[i].mask_name != NULL; i++) { -- char flag; -- flag = ((rg & mask_flags[i].mask_bitfield) == mask_flags[i].mask_bitfield) ? '+' : '-'; -- printk(KERN_DEBUG "%c%s\n", flag, mask_flags[i].mask_name); -- } -- } -- -- return count; --} -- --/* Stuff to handle installation of file systems */ --struct file_system_to_install { -- struct file_system_type *fst; -- int installed; --}; -- --static struct file_system_to_install fs_to_install[] = { -- {&yaffs_fs_type, 0}, -- {&yaffs2_fs_type, 0}, -- {NULL, 0} --}; -- --static int __init init_yaffs_fs(void) --{ -- int error = 0; -- struct file_system_to_install *fsinst; -- -- T(YAFFS_TRACE_ALWAYS, -- ("yaffs " __DATE__ " " __TIME__ " Installing. \n")); -- -- /* Install the proc_fs entry */ -- my_proc_entry = create_proc_entry("yaffs", -- S_IRUGO | S_IFREG, -- YPROC_ROOT); -- -- if (my_proc_entry) { -- my_proc_entry->write_proc = yaffs_proc_write; -- my_proc_entry->read_proc = yaffs_proc_read; -- my_proc_entry->data = NULL; -- } else -- return -ENOMEM; -- -- /* Now add the file system entries */ -- -- fsinst = fs_to_install; -- -- while (fsinst->fst && !error) { -- error = register_filesystem(fsinst->fst); -- if (!error) -- fsinst->installed = 1; -- fsinst++; -- } -- -- /* Any errors? uninstall */ -- if (error) { -- fsinst = fs_to_install; -- -- while (fsinst->fst) { -- if (fsinst->installed) { -- unregister_filesystem(fsinst->fst); -- fsinst->installed = 0; -- } -- fsinst++; -- } -- } -- -- return error; --} -- --static void __exit exit_yaffs_fs(void) --{ -- -- struct file_system_to_install *fsinst; -- -- T(YAFFS_TRACE_ALWAYS, ("yaffs " __DATE__ " " __TIME__ -- " removing. \n")); -- -- remove_proc_entry("yaffs", YPROC_ROOT); -- -- fsinst = fs_to_install; -- -- while (fsinst->fst) { -- if (fsinst->installed) { -- unregister_filesystem(fsinst->fst); -- fsinst->installed = 0; -- } -- fsinst++; -- } --} -- --module_init(init_yaffs_fs) --module_exit(exit_yaffs_fs) -- --MODULE_DESCRIPTION("YAFFS2 - a NAND specific flash file system"); --MODULE_AUTHOR("Charles Manning, Aleph One Ltd., 2002-2006"); --MODULE_LICENSE("GPL"); ---- a/fs/yaffs2/yaffs_getblockinfo.h -+++ b/fs/yaffs2/yaffs_getblockinfo.h -@@ -1,7 +1,7 @@ - /* - * YAFFS: Yet another Flash File System . A NAND-flash specific file system. - * -- * Copyright (C) 2002-2007 Aleph One Ltd. -+ * Copyright (C) 2002-2010 Aleph One Ltd. - * for Toby Churchill Ltd and Brightstar Engineering - * - * Created by Charles Manning <charles@aleph1.co.uk> -@@ -17,18 +17,19 @@ - #define __YAFFS_GETBLOCKINFO_H__ - - #include "yaffs_guts.h" -+#include "yaffs_trace.h" - - /* Function to manipulate block info */ --static Y_INLINE yaffs_BlockInfo *yaffs_GetBlockInfo(yaffs_Device * dev, int blk) -+static Y_INLINE yaffs_block_info_t *yaffs_get_block_info(yaffs_dev_t * dev, int blk) - { -- if (blk < dev->internalStartBlock || blk > dev->internalEndBlock) { -+ if (blk < dev->internal_start_block || blk > dev->internal_end_block) { - T(YAFFS_TRACE_ERROR, - (TSTR - ("**>> yaffs: getBlockInfo block %d is not valid" TENDSTR), - blk)); - YBUG(); - } -- return &dev->blockInfo[blk - dev->internalStartBlock]; -+ return &dev->block_info[blk - dev->internal_start_block]; - } - - #endif ---- a/fs/yaffs2/yaffs_guts.c -+++ b/fs/yaffs2/yaffs_guts.c -@@ -1,7 +1,7 @@ - /* - * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. - * -- * Copyright (C) 2002-2007 Aleph One Ltd. -+ * Copyright (C) 2002-2010 Aleph One Ltd. - * for Toby Churchill Ltd and Brightstar Engineering - * - * Created by Charles Manning <charles@aleph1.co.uk> -@@ -10,11 +10,8 @@ - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - */ -- --const char *yaffs_guts_c_version = -- "$Id: yaffs_guts.c,v 1.82 2009-03-09 04:24:17 charles Exp $"; -- - #include "yportenv.h" -+#include "yaffs_trace.h" - - #include "yaffsinterface.h" - #include "yaffs_guts.h" -@@ -22,118 +19,109 @@ const char *yaffs_guts_c_version = - #include "yaffs_getblockinfo.h" - - #include "yaffs_tagscompat.h" --#ifndef CONFIG_YAFFS_USE_OWN_SORT --#include "yaffs_qsort.h" --#endif -+ - #include "yaffs_nand.h" - --#include "yaffs_checkptrw.h" -+#include "yaffs_yaffs1.h" -+#include "yaffs_yaffs2.h" -+#include "yaffs_bitmap.h" -+#include "yaffs_verify.h" - - #include "yaffs_nand.h" - #include "yaffs_packedtags2.h" - -+#include "yaffs_nameval.h" -+#include "yaffs_allocator.h" - --#define YAFFS_PASSIVE_GC_CHUNKS 2 -+/* Note YAFFS_GC_GOOD_ENOUGH must be <= YAFFS_GC_PASSIVE_THRESHOLD */ -+#define YAFFS_GC_GOOD_ENOUGH 2 -+#define YAFFS_GC_PASSIVE_THRESHOLD 4 - - #include "yaffs_ecc.h" - - -+ - /* Robustification (if it ever comes about...) */ --static void yaffs_RetireBlock(yaffs_Device *dev, int blockInNAND); --static void yaffs_HandleWriteChunkError(yaffs_Device *dev, int chunkInNAND, -+static void yaffs_retire_block(yaffs_dev_t *dev, int flash_block); -+static void yaffs_handle_chunk_wr_error(yaffs_dev_t *dev, int nand_chunk, - int erasedOk); --static void yaffs_HandleWriteChunkOk(yaffs_Device *dev, int chunkInNAND, -+static void yaffs_handle_chunk_wr_ok(yaffs_dev_t *dev, int nand_chunk, - const __u8 *data, -- const yaffs_ExtendedTags *tags); --static void yaffs_HandleUpdateChunk(yaffs_Device *dev, int chunkInNAND, -- const yaffs_ExtendedTags *tags); -+ const yaffs_ext_tags *tags); -+static void yaffs_handle_chunk_update(yaffs_dev_t *dev, int nand_chunk, -+ const yaffs_ext_tags *tags); - - /* Other local prototypes */ --static int yaffs_UnlinkObject(yaffs_Object *obj); --static int yaffs_ObjectHasCachedWriteData(yaffs_Object *obj); -- --static void yaffs_HardlinkFixup(yaffs_Device *dev, yaffs_Object *hardList); -+static void yaffs_update_parent(yaffs_obj_t *obj); -+static int yaffs_unlink_obj(yaffs_obj_t *obj); -+static int yaffs_obj_cache_dirty(yaffs_obj_t *obj); - --static int yaffs_WriteNewChunkWithTagsToNAND(yaffs_Device *dev, -+static int yaffs_write_new_chunk(yaffs_dev_t *dev, - const __u8 *buffer, -- yaffs_ExtendedTags *tags, -+ yaffs_ext_tags *tags, - int useReserve); --static int yaffs_PutChunkIntoFile(yaffs_Object *in, int chunkInInode, -- int chunkInNAND, int inScan); - --static yaffs_Object *yaffs_CreateNewObject(yaffs_Device *dev, int number, -- yaffs_ObjectType type); --static void yaffs_AddObjectToDirectory(yaffs_Object *directory, -- yaffs_Object *obj); --static int yaffs_UpdateObjectHeader(yaffs_Object *in, const YCHAR *name, -- int force, int isShrink, int shadows); --static void yaffs_RemoveObjectFromDirectory(yaffs_Object *obj); --static int yaffs_CheckStructures(void); --static int yaffs_DeleteWorker(yaffs_Object *in, yaffs_Tnode *tn, __u32 level, -- int chunkOffset, int *limit); --static int yaffs_DoGenericObjectDeletion(yaffs_Object *in); -- --static yaffs_BlockInfo *yaffs_GetBlockInfo(yaffs_Device *dev, int blockNo); - -+static yaffs_obj_t *yaffs_new_obj(yaffs_dev_t *dev, int number, -+ yaffs_obj_type type); - --static int yaffs_CheckChunkErased(struct yaffs_DeviceStruct *dev, -- int chunkInNAND); - --static int yaffs_UnlinkWorker(yaffs_Object *obj); -+static int yaffs_apply_xattrib_mod(yaffs_obj_t *obj, char *buffer, yaffs_xattr_mod *xmod); - --static int yaffs_TagsMatch(const yaffs_ExtendedTags *tags, int objectId, -- int chunkInObject); -+static void yaffs_remove_obj_from_dir(yaffs_obj_t *obj); -+static int yaffs_check_structures(void); -+static int yaffs_generic_obj_del(yaffs_obj_t *in); -+ -+static int yaffs_check_chunk_erased(struct yaffs_dev_s *dev, -+ int nand_chunk); - --static int yaffs_AllocateChunk(yaffs_Device *dev, int useReserve, -- yaffs_BlockInfo **blockUsedPtr); -+static int yaffs_unlink_worker(yaffs_obj_t *obj); - --static void yaffs_VerifyFreeChunks(yaffs_Device *dev); -+static int yaffs_tags_match(const yaffs_ext_tags *tags, int obj_id, -+ int chunkInObject); - --static void yaffs_CheckObjectDetailsLoaded(yaffs_Object *in); -+static int yaffs_alloc_chunk(yaffs_dev_t *dev, int useReserve, -+ yaffs_block_info_t **blockUsedPtr); - --static void yaffs_VerifyDirectory(yaffs_Object *directory); --#ifdef YAFFS_PARANOID --static int yaffs_CheckFileSanity(yaffs_Object *in); --#else --#define yaffs_CheckFileSanity(in) --#endif -+static void yaffs_check_obj_details_loaded(yaffs_obj_t *in); -+ -+static void yaffs_invalidate_whole_cache(yaffs_obj_t *in); -+static void yaffs_invalidate_chunk_cache(yaffs_obj_t *object, int chunk_id); - --static void yaffs_InvalidateWholeChunkCache(yaffs_Object *in); --static void yaffs_InvalidateChunkCache(yaffs_Object *object, int chunkId); -+static int yaffs_find_chunk_in_file(yaffs_obj_t *in, int inode_chunk, -+ yaffs_ext_tags *tags); - --static void yaffs_InvalidateCheckpoint(yaffs_Device *dev); -+static int yaffs_verify_chunk_written(yaffs_dev_t *dev, -+ int nand_chunk, -+ const __u8 *data, -+ yaffs_ext_tags *tags); - --static int yaffs_FindChunkInFile(yaffs_Object *in, int chunkInInode, -- yaffs_ExtendedTags *tags); - --static __u32 yaffs_GetChunkGroupBase(yaffs_Device *dev, yaffs_Tnode *tn, -- unsigned pos); --static yaffs_Tnode *yaffs_FindLevel0Tnode(yaffs_Device *dev, -- yaffs_FileStructure *fStruct, -- __u32 chunkId); -+static void yaffs_load_name_from_oh(yaffs_dev_t *dev,YCHAR *name, const YCHAR *ohName, int bufferSize); -+static void yaffs_load_oh_from_name(yaffs_dev_t *dev,YCHAR *ohName, const YCHAR *name); - - - /* Function to calculate chunk and offset */ - --static void yaffs_AddrToChunk(yaffs_Device *dev, loff_t addr, int *chunkOut, -+static void yaffs_addr_to_chunk(yaffs_dev_t *dev, loff_t addr, int *chunkOut, - __u32 *offsetOut) - { - int chunk; - __u32 offset; - -- chunk = (__u32)(addr >> dev->chunkShift); -+ chunk = (__u32)(addr >> dev->chunk_shift); - -- if (dev->chunkDiv == 1) { -+ if (dev->chunk_div == 1) { - /* easy power of 2 case */ -- offset = (__u32)(addr & dev->chunkMask); -+ offset = (__u32)(addr & dev->chunk_mask); - } else { - /* Non power-of-2 case */ - - loff_t chunkBase; - -- chunk /= dev->chunkDiv; -+ chunk /= dev->chunk_div; - -- chunkBase = ((loff_t)chunk) * dev->nDataBytesPerChunk; -+ chunkBase = ((loff_t)chunk) * dev->data_bytes_per_chunk; - offset = (__u32)(addr - chunkBase); - } - -@@ -172,7 +160,7 @@ static __u32 ShiftsGE(__u32 x) - - static __u32 Shifts(__u32 x) - { -- int nShifts; -+ __u32 nShifts; - - nShifts = 0; - -@@ -193,49 +181,49 @@ static __u32 Shifts(__u32 x) - * Temporary buffer manipulations. - */ - --static int yaffs_InitialiseTempBuffers(yaffs_Device *dev) -+static int yaffs_init_tmp_buffers(yaffs_dev_t *dev) - { - int i; - __u8 *buf = (__u8 *)1; - -- memset(dev->tempBuffer, 0, sizeof(dev->tempBuffer)); -+ memset(dev->temp_buffer, 0, sizeof(dev->temp_buffer)); - - for (i = 0; buf && i < YAFFS_N_TEMP_BUFFERS; i++) { -- dev->tempBuffer[i].line = 0; /* not in use */ -- dev->tempBuffer[i].buffer = buf = -- YMALLOC_DMA(dev->totalBytesPerChunk); -+ dev->temp_buffer[i].line = 0; /* not in use */ -+ dev->temp_buffer[i].buffer = buf = -+ YMALLOC_DMA(dev->param.total_bytes_per_chunk); - } - - return buf ? YAFFS_OK : YAFFS_FAIL; - } - --__u8 *yaffs_GetTempBuffer(yaffs_Device *dev, int lineNo) -+__u8 *yaffs_get_temp_buffer(yaffs_dev_t *dev, int line_no) - { - int i, j; - -- dev->tempInUse++; -- if (dev->tempInUse > dev->maxTemp) -- dev->maxTemp = dev->tempInUse; -+ dev->temp_in_use++; -+ if (dev->temp_in_use > dev->max_temp) -+ dev->max_temp = dev->temp_in_use; - - for (i = 0; i < YAFFS_N_TEMP_BUFFERS; i++) { -- if (dev->tempBuffer[i].line == 0) { -- dev->tempBuffer[i].line = lineNo; -- if ((i + 1) > dev->maxTemp) { -- dev->maxTemp = i + 1; -+ if (dev->temp_buffer[i].line == 0) { -+ dev->temp_buffer[i].line = line_no; -+ if ((i + 1) > dev->max_temp) { -+ dev->max_temp = i + 1; - for (j = 0; j <= i; j++) -- dev->tempBuffer[j].maxLine = -- dev->tempBuffer[j].line; -+ dev->temp_buffer[j].max_line = -+ dev->temp_buffer[j].line; - } - -- return dev->tempBuffer[i].buffer; -+ return dev->temp_buffer[i].buffer; - } - } - - T(YAFFS_TRACE_BUFFERS, - (TSTR("Out of temp buffers at line %d, other held by lines:"), -- lineNo)); -+ line_no)); - for (i = 0; i < YAFFS_N_TEMP_BUFFERS; i++) -- T(YAFFS_TRACE_BUFFERS, (TSTR(" %d "), dev->tempBuffer[i].line)); -+ T(YAFFS_TRACE_BUFFERS, (TSTR(" %d "), dev->temp_buffer[i].line)); - - T(YAFFS_TRACE_BUFFERS, (TSTR(" " TENDSTR))); - -@@ -244,21 +232,21 @@ __u8 *yaffs_GetTempBuffer(yaffs_Device * - * This is not good. - */ - -- dev->unmanagedTempAllocations++; -- return YMALLOC(dev->nDataBytesPerChunk); -+ dev->unmanaged_buffer_allocs++; -+ return YMALLOC(dev->data_bytes_per_chunk); - - } - --void yaffs_ReleaseTempBuffer(yaffs_Device *dev, __u8 *buffer, -- int lineNo) -+void yaffs_release_temp_buffer(yaffs_dev_t *dev, __u8 *buffer, -+ int line_no) - { - int i; - -- dev->tempInUse--; -+ dev->temp_in_use--; - - for (i = 0; i < YAFFS_N_TEMP_BUFFERS; i++) { -- if (dev->tempBuffer[i].buffer == buffer) { -- dev->tempBuffer[i].line = 0; -+ if (dev->temp_buffer[i].buffer == buffer) { -+ dev->temp_buffer[i].line = 0; - return; - } - } -@@ -267,9 +255,9 @@ void yaffs_ReleaseTempBuffer(yaffs_Devic - /* assume it is an unmanaged one. */ - T(YAFFS_TRACE_BUFFERS, - (TSTR("Releasing unmanaged temp buffer in line %d" TENDSTR), -- lineNo)); -+ line_no)); - YFREE(buffer); -- dev->unmanagedTempDeallocations++; -+ dev->unmanaged_buffer_deallocs++; - } - - } -@@ -277,21 +265,21 @@ void yaffs_ReleaseTempBuffer(yaffs_Devic - /* - * Determine if we have a managed buffer. - */ --int yaffs_IsManagedTempBuffer(yaffs_Device *dev, const __u8 *buffer) -+int yaffs_is_managed_tmp_buffer(yaffs_dev_t *dev, const __u8 *buffer) - { - int i; - - for (i = 0; i < YAFFS_N_TEMP_BUFFERS; i++) { -- if (dev->tempBuffer[i].buffer == buffer) -+ if (dev->temp_buffer[i].buffer == buffer) - return 1; - } - -- for (i = 0; i < dev->nShortOpCaches; i++) { -- if (dev->srCache[i].data == buffer) -+ for (i = 0; i < dev->param.n_caches; i++) { -+ if (dev->cache[i].data == buffer) - return 1; - } - -- if (buffer == dev->checkpointBuffer) -+ if (buffer == dev->checkpt_buffer) - return 1; - - T(YAFFS_TRACE_ALWAYS, -@@ -299,6397 +287,4205 @@ int yaffs_IsManagedTempBuffer(yaffs_Devi - return 0; - } - -- -- - /* -- * Chunk bitmap manipulations -+ * Verification code - */ - --static Y_INLINE __u8 *yaffs_BlockBits(yaffs_Device *dev, int blk) --{ -- if (blk < dev->internalStartBlock || blk > dev->internalEndBlock) { -- T(YAFFS_TRACE_ERROR, -- (TSTR("**>> yaffs: BlockBits block %d is not valid" TENDSTR), -- blk)); -- YBUG(); -- } -- return dev->chunkBits + -- (dev->chunkBitmapStride * (blk - dev->internalStartBlock)); --} - --static Y_INLINE void yaffs_VerifyChunkBitId(yaffs_Device *dev, int blk, int chunk) --{ -- if (blk < dev->internalStartBlock || blk > dev->internalEndBlock || -- chunk < 0 || chunk >= dev->nChunksPerBlock) { -- T(YAFFS_TRACE_ERROR, -- (TSTR("**>> yaffs: Chunk Id (%d:%d) invalid"TENDSTR), -- blk, chunk)); -- YBUG(); -- } --} - --static Y_INLINE void yaffs_ClearChunkBits(yaffs_Device *dev, int blk) --{ -- __u8 *blkBits = yaffs_BlockBits(dev, blk); - -- memset(blkBits, 0, dev->chunkBitmapStride); --} -+/* -+ * Simple hash function. Needs to have a reasonable spread -+ */ - --static Y_INLINE void yaffs_ClearChunkBit(yaffs_Device *dev, int blk, int chunk) -+static Y_INLINE int yaffs_hash_fn(int n) - { -- __u8 *blkBits = yaffs_BlockBits(dev, blk); -- -- yaffs_VerifyChunkBitId(dev, blk, chunk); -- -- blkBits[chunk / 8] &= ~(1 << (chunk & 7)); -+ n = abs(n); -+ return n % YAFFS_NOBJECT_BUCKETS; - } - --static Y_INLINE void yaffs_SetChunkBit(yaffs_Device *dev, int blk, int chunk) --{ -- __u8 *blkBits = yaffs_BlockBits(dev, blk); -- -- yaffs_VerifyChunkBitId(dev, blk, chunk); -- -- blkBits[chunk / 8] |= (1 << (chunk & 7)); --} -+/* -+ * Access functions to useful fake objects. -+ * Note that root might have a presence in NAND if permissions are set. -+ */ - --static Y_INLINE int yaffs_CheckChunkBit(yaffs_Device *dev, int blk, int chunk) -+yaffs_obj_t *yaffs_root(yaffs_dev_t *dev) - { -- __u8 *blkBits = yaffs_BlockBits(dev, blk); -- yaffs_VerifyChunkBitId(dev, blk, chunk); -- -- return (blkBits[chunk / 8] & (1 << (chunk & 7))) ? 1 : 0; -+ return dev->root_dir; - } - --static Y_INLINE int yaffs_StillSomeChunkBits(yaffs_Device *dev, int blk) -+yaffs_obj_t *yaffs_lost_n_found(yaffs_dev_t *dev) - { -- __u8 *blkBits = yaffs_BlockBits(dev, blk); -- int i; -- for (i = 0; i < dev->chunkBitmapStride; i++) { -- if (*blkBits) -- return 1; -- blkBits++; -- } -- return 0; -+ return dev->lost_n_found; - } - --static int yaffs_CountChunkBits(yaffs_Device *dev, int blk) --{ -- __u8 *blkBits = yaffs_BlockBits(dev, blk); -- int i; -- int n = 0; -- for (i = 0; i < dev->chunkBitmapStride; i++) { -- __u8 x = *blkBits; -- while (x) { -- if (x & 1) -- n++; -- x >>= 1; -- } -- -- blkBits++; -- } -- return n; --} - - /* -- * Verification code -+ * Erased NAND checking functions - */ - --static int yaffs_SkipVerification(yaffs_Device *dev) --{ -- return !(yaffs_traceMask & (YAFFS_TRACE_VERIFY | YAFFS_TRACE_VERIFY_FULL)); --} -- --static int yaffs_SkipFullVerification(yaffs_Device *dev) --{ -- return !(yaffs_traceMask & (YAFFS_TRACE_VERIFY_FULL)); --} -- --static int yaffs_SkipNANDVerification(yaffs_Device *dev) -+int yaffs_check_ff(__u8 *buffer, int n_bytes) - { -- return !(yaffs_traceMask & (YAFFS_TRACE_VERIFY_NAND)); -+ /* Horrible, slow implementation */ -+ while (n_bytes--) { -+ if (*buffer != 0xFF) -+ return 0; -+ buffer++; -+ } -+ return 1; - } - --static const char *blockStateName[] = { --"Unknown", --"Needs scanning", --"Scanning", --"Empty", --"Allocating", --"Full", --"Dirty", --"Checkpoint", --"Collecting", --"Dead" --}; -- --static void yaffs_VerifyBlock(yaffs_Device *dev, yaffs_BlockInfo *bi, int n) -+static int yaffs_check_chunk_erased(struct yaffs_dev_s *dev, -+ int nand_chunk) - { -- int actuallyUsed; -- int inUse; -+ int retval = YAFFS_OK; -+ __u8 *data = yaffs_get_temp_buffer(dev, __LINE__); -+ yaffs_ext_tags tags; -+ int result; - -- if (yaffs_SkipVerification(dev)) -- return; -+ result = yaffs_rd_chunk_tags_nand(dev, nand_chunk, data, &tags); - -- /* Report illegal runtime states */ -- if (bi->blockState >= YAFFS_NUMBER_OF_BLOCK_STATES) -- T(YAFFS_TRACE_VERIFY, (TSTR("Block %d has undefined state %d"TENDSTR), n, bi->blockState)); -+ if (tags.ecc_result > YAFFS_ECC_RESULT_NO_ERROR) -+ retval = YAFFS_FAIL; - -- switch (bi->blockState) { -- case YAFFS_BLOCK_STATE_UNKNOWN: -- case YAFFS_BLOCK_STATE_SCANNING: -- case YAFFS_BLOCK_STATE_NEEDS_SCANNING: -- T(YAFFS_TRACE_VERIFY, (TSTR("Block %d has bad run-state %s"TENDSTR), -- n, blockStateName[bi->blockState])); -+ if (!yaffs_check_ff(data, dev->data_bytes_per_chunk) || tags.chunk_used) { -+ T(YAFFS_TRACE_NANDACCESS, -+ (TSTR("Chunk %d not erased" TENDSTR), nand_chunk)); -+ retval = YAFFS_FAIL; - } - -- /* Check pages in use and soft deletions are legal */ -- -- actuallyUsed = bi->pagesInUse - bi->softDeletions; -- -- if (bi->pagesInUse < 0 || bi->pagesInUse > dev->nChunksPerBlock || -- bi->softDeletions < 0 || bi->softDeletions > dev->nChunksPerBlock || -- actuallyUsed < 0 || actuallyUsed > dev->nChunksPerBlock) -- T(YAFFS_TRACE_VERIFY, (TSTR("Block %d has illegal values pagesInUsed %d softDeletions %d"TENDSTR), -- n, bi->pagesInUse, bi->softDeletions)); -- -+ yaffs_release_temp_buffer(dev, data, __LINE__); - -- /* Check chunk bitmap legal */ -- inUse = yaffs_CountChunkBits(dev, n); -- if (inUse != bi->pagesInUse) -- T(YAFFS_TRACE_VERIFY, (TSTR("Block %d has inconsistent values pagesInUse %d counted chunk bits %d"TENDSTR), -- n, bi->pagesInUse, inUse)); -+ return retval; - -- /* Check that the sequence number is valid. -- * Ten million is legal, but is very unlikely -- */ -- if (dev->isYaffs2 && -- (bi->blockState == YAFFS_BLOCK_STATE_ALLOCATING || bi->blockState == YAFFS_BLOCK_STATE_FULL) && -- (bi->sequenceNumber < YAFFS_LOWEST_SEQUENCE_NUMBER || bi->sequenceNumber > 10000000)) -- T(YAFFS_TRACE_VERIFY, (TSTR("Block %d has suspect sequence number of %d"TENDSTR), -- n, bi->sequenceNumber)); - } - --static void yaffs_VerifyCollectedBlock(yaffs_Device *dev, yaffs_BlockInfo *bi, -- int n) -+ -+static int yaffs_verify_chunk_written(yaffs_dev_t *dev, -+ int nand_chunk, -+ const __u8 *data, -+ yaffs_ext_tags *tags) - { -- yaffs_VerifyBlock(dev, bi, n); -+ int retval = YAFFS_OK; -+ yaffs_ext_tags tempTags; -+ __u8 *buffer = yaffs_get_temp_buffer(dev,__LINE__); -+ int result; -+ -+ result = yaffs_rd_chunk_tags_nand(dev,nand_chunk,buffer,&tempTags); -+ if(memcmp(buffer,data,dev->data_bytes_per_chunk) || -+ tempTags.obj_id != tags->obj_id || -+ tempTags.chunk_id != tags->chunk_id || -+ tempTags.n_bytes != tags->n_bytes) -+ retval = YAFFS_FAIL; - -- /* After collection the block should be in the erased state */ -- /* This will need to change if we do partial gc */ -+ yaffs_release_temp_buffer(dev, buffer, __LINE__); - -- if (bi->blockState != YAFFS_BLOCK_STATE_COLLECTING && -- bi->blockState != YAFFS_BLOCK_STATE_EMPTY) { -- T(YAFFS_TRACE_ERROR, (TSTR("Block %d is in state %d after gc, should be erased"TENDSTR), -- n, bi->blockState)); -- } -+ return retval; - } - --static void yaffs_VerifyBlocks(yaffs_Device *dev) -+static int yaffs_write_new_chunk(struct yaffs_dev_s *dev, -+ const __u8 *data, -+ yaffs_ext_tags *tags, -+ int useReserve) - { -- int i; -- int nBlocksPerState[YAFFS_NUMBER_OF_BLOCK_STATES]; -- int nIllegalBlockStates = 0; -- -- if (yaffs_SkipVerification(dev)) -- return; -- -- memset(nBlocksPerState, 0, sizeof(nBlocksPerState)); -- -- for (i = dev->internalStartBlock; i <= dev->internalEndBlock; i++) { -- yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, i); -- yaffs_VerifyBlock(dev, bi, i); -- -- if (bi->blockState < YAFFS_NUMBER_OF_BLOCK_STATES) -- nBlocksPerState[bi->blockState]++; -- else -- nIllegalBlockStates++; -- } -+ int attempts = 0; -+ int writeOk = 0; -+ int chunk; - -- T(YAFFS_TRACE_VERIFY, (TSTR(""TENDSTR))); -- T(YAFFS_TRACE_VERIFY, (TSTR("Block summary"TENDSTR))); -+ yaffs2_checkpt_invalidate(dev); - -- T(YAFFS_TRACE_VERIFY, (TSTR("%d blocks have illegal states"TENDSTR), nIllegalBlockStates)); -- if (nBlocksPerState[YAFFS_BLOCK_STATE_ALLOCATING] > 1) -- T(YAFFS_TRACE_VERIFY, (TSTR("Too many allocating blocks"TENDSTR))); -+ do { -+ yaffs_block_info_t *bi = 0; -+ int erasedOk = 0; - -- for (i = 0; i < YAFFS_NUMBER_OF_BLOCK_STATES; i++) -- T(YAFFS_TRACE_VERIFY, -- (TSTR("%s %d blocks"TENDSTR), -- blockStateName[i], nBlocksPerState[i])); -+ chunk = yaffs_alloc_chunk(dev, useReserve, &bi); -+ if (chunk < 0) { -+ /* no space */ -+ break; -+ } - -- if (dev->blocksInCheckpoint != nBlocksPerState[YAFFS_BLOCK_STATE_CHECKPOINT]) -- T(YAFFS_TRACE_VERIFY, -- (TSTR("Checkpoint block count wrong dev %d count %d"TENDSTR), -- dev->blocksInCheckpoint, nBlocksPerState[YAFFS_BLOCK_STATE_CHECKPOINT])); -+ /* First check this chunk is erased, if it needs -+ * checking. The checking policy (unless forced -+ * always on) is as follows: -+ * -+ * Check the first page we try to write in a block. -+ * If the check passes then we don't need to check any -+ * more. If the check fails, we check again... -+ * If the block has been erased, we don't need to check. -+ * -+ * However, if the block has been prioritised for gc, -+ * then we think there might be something odd about -+ * this block and stop using it. -+ * -+ * Rationale: We should only ever see chunks that have -+ * not been erased if there was a partially written -+ * chunk due to power loss. This checking policy should -+ * catch that case with very few checks and thus save a -+ * lot of checks that are most likely not needed. -+ * -+ * Mods to the above -+ * If an erase check fails or the write fails we skip the -+ * rest of the block. -+ */ - -- if (dev->nErasedBlocks != nBlocksPerState[YAFFS_BLOCK_STATE_EMPTY]) -- T(YAFFS_TRACE_VERIFY, -- (TSTR("Erased block count wrong dev %d count %d"TENDSTR), -- dev->nErasedBlocks, nBlocksPerState[YAFFS_BLOCK_STATE_EMPTY])); -+ /* let's give it a try */ -+ attempts++; - -- if (nBlocksPerState[YAFFS_BLOCK_STATE_COLLECTING] > 1) -- T(YAFFS_TRACE_VERIFY, -- (TSTR("Too many collecting blocks %d (max is 1)"TENDSTR), -- nBlocksPerState[YAFFS_BLOCK_STATE_COLLECTING])); -+ if(dev->param.always_check_erased) -+ bi->skip_erased_check = 0; - -- T(YAFFS_TRACE_VERIFY, (TSTR(""TENDSTR))); -+ if (!bi->skip_erased_check) { -+ erasedOk = yaffs_check_chunk_erased(dev, chunk); -+ if (erasedOk != YAFFS_OK) { -+ T(YAFFS_TRACE_ERROR, -+ (TSTR("**>> yaffs chunk %d was not erased" -+ TENDSTR), chunk)); - --} -+ /* If not erased, delete this one, -+ * skip rest of block and -+ * try another chunk */ -+ yaffs_chunk_del(dev,chunk,1,__LINE__); -+ yaffs_skip_rest_of_block(dev); -+ continue; -+ } -+ } - --/* -- * Verify the object header. oh must be valid, but obj and tags may be NULL in which -- * case those tests will not be performed. -- */ --static void yaffs_VerifyObjectHeader(yaffs_Object *obj, yaffs_ObjectHeader *oh, yaffs_ExtendedTags *tags, int parentCheck) --{ -- if (obj && yaffs_SkipVerification(obj->myDev)) -- return; -+ writeOk = yaffs_wr_chunk_tags_nand(dev, chunk, -+ data, tags); - -- if (!(tags && obj && oh)) { -- T(YAFFS_TRACE_VERIFY, -- (TSTR("Verifying object header tags %x obj %x oh %x"TENDSTR), -- (__u32)tags, (__u32)obj, (__u32)oh)); -- return; -- } -+ if(!bi->skip_erased_check) -+ writeOk = yaffs_verify_chunk_written(dev, chunk, data, tags); - -- if (oh->type <= YAFFS_OBJECT_TYPE_UNKNOWN || -- oh->type > YAFFS_OBJECT_TYPE_MAX) -- T(YAFFS_TRACE_VERIFY, -- (TSTR("Obj %d header type is illegal value 0x%x"TENDSTR), -- tags->objectId, oh->type)); -+ if (writeOk != YAFFS_OK) { -+ /* Clean up aborted write, skip to next block and -+ * try another chunk */ -+ yaffs_handle_chunk_wr_error(dev, chunk, erasedOk); -+ continue; -+ } - -- if (tags->objectId != obj->objectId) -- T(YAFFS_TRACE_VERIFY, -- (TSTR("Obj %d header mismatch objectId %d"TENDSTR), -- tags->objectId, obj->objectId)); -+ bi->skip_erased_check = 1; - -+ /* Copy the data into the robustification buffer */ -+ yaffs_handle_chunk_wr_ok(dev, chunk, data, tags); - -- /* -- * Check that the object's parent ids match if parentCheck requested. -- * -- * Tests do not apply to the root object. -- */ -+ } while (writeOk != YAFFS_OK && -+ (yaffs_wr_attempts <= 0 || attempts <= yaffs_wr_attempts)); - -- if (parentCheck && tags->objectId > 1 && !obj->parent) -- T(YAFFS_TRACE_VERIFY, -- (TSTR("Obj %d header mismatch parentId %d obj->parent is NULL"TENDSTR), -- tags->objectId, oh->parentObjectId)); -+ if (!writeOk) -+ chunk = -1; - -- if (parentCheck && obj->parent && -- oh->parentObjectId != obj->parent->objectId && -- (oh->parentObjectId != YAFFS_OBJECTID_UNLINKED || -- obj->parent->objectId != YAFFS_OBJECTID_DELETED)) -- T(YAFFS_TRACE_VERIFY, -- (TSTR("Obj %d header mismatch parentId %d parentObjectId %d"TENDSTR), -- tags->objectId, oh->parentObjectId, obj->parent->objectId)); -+ if (attempts > 1) { -+ T(YAFFS_TRACE_ERROR, -+ (TSTR("**>> yaffs write required %d attempts" TENDSTR), -+ attempts)); - -- if (tags->objectId > 1 && oh->name[0] == 0) /* Null name */ -- T(YAFFS_TRACE_VERIFY, -- (TSTR("Obj %d header name is NULL"TENDSTR), -- obj->objectId)); -+ dev->n_retired_writes += (attempts - 1); -+ } - -- if (tags->objectId > 1 && ((__u8)(oh->name[0])) == 0xff) /* Trashed name */ -- T(YAFFS_TRACE_VERIFY, -- (TSTR("Obj %d header name is 0xFF"TENDSTR), -- obj->objectId)); -+ return chunk; - } - - -+ -+/* -+ * Block retiring for handling a broken block. -+ */ - --static int yaffs_VerifyTnodeWorker(yaffs_Object *obj, yaffs_Tnode *tn, -- __u32 level, int chunkOffset) -+static void yaffs_retire_block(yaffs_dev_t *dev, int flash_block) - { -- int i; -- yaffs_Device *dev = obj->myDev; -- int ok = 1; -+ yaffs_block_info_t *bi = yaffs_get_block_info(dev, flash_block); - -- if (tn) { -- if (level > 0) { -+ yaffs2_checkpt_invalidate(dev); -+ -+ yaffs2_clear_oldest_dirty_seq(dev,bi); - -- for (i = 0; i < YAFFS_NTNODES_INTERNAL && ok; i++) { -- if (tn->internal[i]) { -- ok = yaffs_VerifyTnodeWorker(obj, -- tn->internal[i], -- level - 1, -- (chunkOffset<<YAFFS_TNODES_INTERNAL_BITS) + i); -- } -- } -- } else if (level == 0) { -- yaffs_ExtendedTags tags; -- __u32 objectId = obj->objectId; -+ if (yaffs_mark_bad(dev, flash_block) != YAFFS_OK) { -+ if (yaffs_erase_block(dev, flash_block) != YAFFS_OK) { -+ T(YAFFS_TRACE_ALWAYS, (TSTR( -+ "yaffs: Failed to mark bad and erase block %d" -+ TENDSTR), flash_block)); -+ } else { -+ yaffs_ext_tags tags; -+ int chunk_id = flash_block * dev->param.chunks_per_block; - -- chunkOffset <<= YAFFS_TNODES_LEVEL0_BITS; -+ __u8 *buffer = yaffs_get_temp_buffer(dev, __LINE__); - -- for (i = 0; i < YAFFS_NTNODES_LEVEL0; i++) { -- __u32 theChunk = yaffs_GetChunkGroupBase(dev, tn, i); -+ memset(buffer, 0xff, dev->data_bytes_per_chunk); -+ yaffs_init_tags(&tags); -+ tags.seq_number = YAFFS_SEQUENCE_BAD_BLOCK; -+ if (dev->param.write_chunk_tags_fn(dev, chunk_id - -+ dev->chunk_offset, buffer, &tags) != YAFFS_OK) -+ T(YAFFS_TRACE_ALWAYS, (TSTR("yaffs: Failed to " -+ TCONT("write bad block marker to block %d") -+ TENDSTR), flash_block)); - -- if (theChunk > 0) { -- /* T(~0,(TSTR("verifying (%d:%d) %d"TENDSTR),tags.objectId,tags.chunkId,theChunk)); */ -- yaffs_ReadChunkWithTagsFromNAND(dev, theChunk, NULL, &tags); -- if (tags.objectId != objectId || tags.chunkId != chunkOffset) { -- T(~0, (TSTR("Object %d chunkId %d NAND mismatch chunk %d tags (%d:%d)"TENDSTR), -- objectId, chunkOffset, theChunk, -- tags.objectId, tags.chunkId)); -- } -- } -- chunkOffset++; -- } -+ yaffs_release_temp_buffer(dev, buffer, __LINE__); - } - } - -- return ok; -+ bi->block_state = YAFFS_BLOCK_STATE_DEAD; -+ bi->gc_prioritise = 0; -+ bi->needs_retiring = 0; - -+ dev->n_retired_blocks++; - } - -+/* -+ * Functions for robustisizing TODO -+ * -+ */ - --static void yaffs_VerifyFile(yaffs_Object *obj) -+static void yaffs_handle_chunk_wr_ok(yaffs_dev_t *dev, int nand_chunk, -+ const __u8 *data, -+ const yaffs_ext_tags *tags) - { -- int requiredTallness; -- int actualTallness; -- __u32 lastChunk; -- __u32 x; -- __u32 i; -- yaffs_Device *dev; -- yaffs_ExtendedTags tags; -- yaffs_Tnode *tn; -- __u32 objectId; -+ dev=dev; -+ nand_chunk=nand_chunk; -+ data=data; -+ tags=tags; -+} - -- if (!obj) -- return; -+static void yaffs_handle_chunk_update(yaffs_dev_t *dev, int nand_chunk, -+ const yaffs_ext_tags *tags) -+{ -+ dev=dev; -+ nand_chunk=nand_chunk; -+ tags=tags; -+} - -- if (yaffs_SkipVerification(obj->myDev)) -- return; -+void yaffs_handle_chunk_error(yaffs_dev_t *dev, yaffs_block_info_t *bi) -+{ -+ if (!bi->gc_prioritise) { -+ bi->gc_prioritise = 1; -+ dev->has_pending_prioritised_gc = 1; -+ bi->chunk_error_strikes++; - -- dev = obj->myDev; -- objectId = obj->objectId; -+ if (bi->chunk_error_strikes > 3) { -+ bi->needs_retiring = 1; /* Too many stikes, so retire this */ -+ T(YAFFS_TRACE_ALWAYS, (TSTR("yaffs: Block struck out" TENDSTR))); - -- /* Check file size is consistent with tnode depth */ -- lastChunk = obj->variant.fileVariant.fileSize / dev->nDataBytesPerChunk + 1; -- x = lastChunk >> YAFFS_TNODES_LEVEL0_BITS; -- requiredTallness = 0; -- while (x > 0) { -- x >>= YAFFS_TNODES_INTERNAL_BITS; -- requiredTallness++; -+ } - } -+} - -- actualTallness = obj->variant.fileVariant.topLevel; -+static void yaffs_handle_chunk_wr_error(yaffs_dev_t *dev, int nand_chunk, -+ int erasedOk) -+{ -+ int flash_block = nand_chunk / dev->param.chunks_per_block; -+ yaffs_block_info_t *bi = yaffs_get_block_info(dev, flash_block); - -- if (requiredTallness > actualTallness) -- T(YAFFS_TRACE_VERIFY, -- (TSTR("Obj %d had tnode tallness %d, needs to be %d"TENDSTR), -- obj->objectId, actualTallness, requiredTallness)); -+ yaffs_handle_chunk_error(dev, bi); - -+ if (erasedOk) { -+ /* Was an actual write failure, so mark the block for retirement */ -+ bi->needs_retiring = 1; -+ T(YAFFS_TRACE_ERROR | YAFFS_TRACE_BAD_BLOCKS, -+ (TSTR("**>> Block %d needs retiring" TENDSTR), flash_block)); -+ } - -- /* Check that the chunks in the tnode tree are all correct. -- * We do this by scanning through the tnode tree and -- * checking the tags for every chunk match. -- */ -+ /* Delete the chunk */ -+ yaffs_chunk_del(dev, nand_chunk, 1, __LINE__); -+ yaffs_skip_rest_of_block(dev); -+} - -- if (yaffs_SkipNANDVerification(dev)) -- return; - -- for (i = 1; i <= lastChunk; i++) { -- tn = yaffs_FindLevel0Tnode(dev, &obj->variant.fileVariant, i); -+/*---------------- Name handling functions ------------*/ - -- if (tn) { -- __u32 theChunk = yaffs_GetChunkGroupBase(dev, tn, i); -- if (theChunk > 0) { -- /* T(~0,(TSTR("verifying (%d:%d) %d"TENDSTR),objectId,i,theChunk)); */ -- yaffs_ReadChunkWithTagsFromNAND(dev, theChunk, NULL, &tags); -- if (tags.objectId != objectId || tags.chunkId != i) { -- T(~0, (TSTR("Object %d chunkId %d NAND mismatch chunk %d tags (%d:%d)"TENDSTR), -- objectId, i, theChunk, -- tags.objectId, tags.chunkId)); -- } -- } -+static __u16 yaffs_calc_name_sum(const YCHAR *name) -+{ -+ __u16 sum = 0; -+ __u16 i = 1; -+ -+ const YUCHAR *bname = (const YUCHAR *) name; -+ if (bname) { -+ while ((*bname) && (i < (YAFFS_MAX_NAME_LENGTH/2))) { -+ -+#ifdef CONFIG_YAFFS_CASE_INSENSITIVE -+ sum += yaffs_toupper(*bname) * i; -+#else -+ sum += (*bname) * i; -+#endif -+ i++; -+ bname++; - } - } -+ return sum; - } - -- --static void yaffs_VerifyHardLink(yaffs_Object *obj) -+void yaffs_set_obj_name(yaffs_obj_t *obj, const YCHAR *name) - { -- if (obj && yaffs_SkipVerification(obj->myDev)) -- return; -- -- /* Verify sane equivalent object */ -+#ifdef CONFIG_YAFFS_SHORT_NAMES_IN_RAM -+ memset(obj->short_name, 0, sizeof(YCHAR) * (YAFFS_SHORT_NAME_LENGTH+1)); -+ if (name && yaffs_strnlen(name,YAFFS_SHORT_NAME_LENGTH+1) <= YAFFS_SHORT_NAME_LENGTH) -+ yaffs_strcpy(obj->short_name, name); -+ else -+ obj->short_name[0] = _Y('\0'); -+#endif -+ obj->sum = yaffs_calc_name_sum(name); - } - --static void yaffs_VerifySymlink(yaffs_Object *obj) -+void yaffs_set_obj_name_from_oh(yaffs_obj_t *obj, const yaffs_obj_header *oh) - { -- if (obj && yaffs_SkipVerification(obj->myDev)) -- return; -- -- /* Verify symlink string */ -+#ifdef CONFIG_YAFFS_AUTO_UNICODE -+ YCHAR tmpName[YAFFS_MAX_NAME_LENGTH+1]; -+ memset(tmpName,0,sizeof(tmpName)); -+ yaffs_load_name_from_oh(obj->my_dev,tmpName,oh->name,YAFFS_MAX_NAME_LENGTH+1); -+ yaffs_set_obj_name(obj,tmpName); -+#else -+ yaffs_set_obj_name(obj,oh->name); -+#endif - } - --static void yaffs_VerifySpecial(yaffs_Object *obj) --{ -- if (obj && yaffs_SkipVerification(obj->myDev)) -- return; --} -- --static void yaffs_VerifyObject(yaffs_Object *obj) --{ -- yaffs_Device *dev; -- -- __u32 chunkMin; -- __u32 chunkMax; -- -- __u32 chunkIdOk; -- __u32 chunkInRange; -- __u32 chunkShouldNotBeDeleted; -- __u32 chunkValid; -- -- if (!obj) -- return; -- -- if (obj->beingCreated) -- return; -+/*-------------------- TNODES ------------------- - -- dev = obj->myDev; -+ * List of spare tnodes -+ * The list is hooked together using the first pointer -+ * in the tnode. -+ */ - -- if (yaffs_SkipVerification(dev)) -- return; - -- /* Check sane object header chunk */ -+yaffs_tnode_t *yaffs_get_tnode(yaffs_dev_t *dev) -+{ -+ yaffs_tnode_t *tn = yaffs_alloc_raw_tnode(dev); -+ if (tn){ -+ memset(tn, 0, dev->tnode_size); -+ dev->n_tnodes++; -+ } - -- chunkMin = dev->internalStartBlock * dev->nChunksPerBlock; -- chunkMax = (dev->internalEndBlock+1) * dev->nChunksPerBlock - 1; -+ dev->checkpoint_blocks_required = 0; /* force recalculation*/ - -- chunkInRange = (((unsigned)(obj->hdrChunk)) >= chunkMin && ((unsigned)(obj->hdrChunk)) <= chunkMax); -- chunkIdOk = chunkInRange || obj->hdrChunk == 0; -- chunkValid = chunkInRange && -- yaffs_CheckChunkBit(dev, -- obj->hdrChunk / dev->nChunksPerBlock, -- obj->hdrChunk % dev->nChunksPerBlock); -- chunkShouldNotBeDeleted = chunkInRange && !chunkValid; -+ return tn; -+} - -- if (!obj->fake && -- (!chunkIdOk || chunkShouldNotBeDeleted)) { -- T(YAFFS_TRACE_VERIFY, -- (TSTR("Obj %d has chunkId %d %s %s"TENDSTR), -- obj->objectId, obj->hdrChunk, -- chunkIdOk ? "" : ",out of range", -- chunkShouldNotBeDeleted ? ",marked as deleted" : "")); -- } -+/* FreeTnode frees up a tnode and puts it back on the free list */ -+static void yaffs_free_tnode(yaffs_dev_t *dev, yaffs_tnode_t *tn) -+{ -+ yaffs_free_raw_tnode(dev,tn); -+ dev->n_tnodes--; -+ dev->checkpoint_blocks_required = 0; /* force recalculation*/ -+} - -- if (chunkValid && !yaffs_SkipNANDVerification(dev)) { -- yaffs_ExtendedTags tags; -- yaffs_ObjectHeader *oh; -- __u8 *buffer = yaffs_GetTempBuffer(dev, __LINE__); -+static void yaffs_deinit_tnodes_and_objs(yaffs_dev_t *dev) -+{ -+ yaffs_deinit_raw_tnodes_and_objs(dev); -+ dev->n_obj = 0; -+ dev->n_tnodes = 0; -+} - -- oh = (yaffs_ObjectHeader *)buffer; - -- yaffs_ReadChunkWithTagsFromNAND(dev, obj->hdrChunk, buffer, -- &tags); -+void yaffs_load_tnode_0(yaffs_dev_t *dev, yaffs_tnode_t *tn, unsigned pos, -+ unsigned val) -+{ -+ __u32 *map = (__u32 *)tn; -+ __u32 bitInMap; -+ __u32 bitInWord; -+ __u32 wordInMap; -+ __u32 mask; - -- yaffs_VerifyObjectHeader(obj, oh, &tags, 1); -+ pos &= YAFFS_TNODES_LEVEL0_MASK; -+ val >>= dev->chunk_grp_bits; - -- yaffs_ReleaseTempBuffer(dev, buffer, __LINE__); -- } -+ bitInMap = pos * dev->tnode_width; -+ wordInMap = bitInMap / 32; -+ bitInWord = bitInMap & (32 - 1); - -- /* Verify it has a parent */ -- if (obj && !obj->fake && -- (!obj->parent || obj->parent->myDev != dev)) { -- T(YAFFS_TRACE_VERIFY, -- (TSTR("Obj %d has parent pointer %p which does not look like an object"TENDSTR), -- obj->objectId, obj->parent)); -- } -+ mask = dev->tnode_mask << bitInWord; - -- /* Verify parent is a directory */ -- if (obj->parent && obj->parent->variantType != YAFFS_OBJECT_TYPE_DIRECTORY) { -- T(YAFFS_TRACE_VERIFY, -- (TSTR("Obj %d's parent is not a directory (type %d)"TENDSTR), -- obj->objectId, obj->parent->variantType)); -- } -+ map[wordInMap] &= ~mask; -+ map[wordInMap] |= (mask & (val << bitInWord)); - -- switch (obj->variantType) { -- case YAFFS_OBJECT_TYPE_FILE: -- yaffs_VerifyFile(obj); -- break; -- case YAFFS_OBJECT_TYPE_SYMLINK: -- yaffs_VerifySymlink(obj); -- break; -- case YAFFS_OBJECT_TYPE_DIRECTORY: -- yaffs_VerifyDirectory(obj); -- break; -- case YAFFS_OBJECT_TYPE_HARDLINK: -- yaffs_VerifyHardLink(obj); -- break; -- case YAFFS_OBJECT_TYPE_SPECIAL: -- yaffs_VerifySpecial(obj); -- break; -- case YAFFS_OBJECT_TYPE_UNKNOWN: -- default: -- T(YAFFS_TRACE_VERIFY, -- (TSTR("Obj %d has illegaltype %d"TENDSTR), -- obj->objectId, obj->variantType)); -- break; -+ if (dev->tnode_width > (32 - bitInWord)) { -+ bitInWord = (32 - bitInWord); -+ wordInMap++;; -+ mask = dev->tnode_mask >> (/*dev->tnode_width -*/ bitInWord); -+ map[wordInMap] &= ~mask; -+ map[wordInMap] |= (mask & (val >> bitInWord)); - } - } - --static void yaffs_VerifyObjects(yaffs_Device *dev) -+__u32 yaffs_get_group_base(yaffs_dev_t *dev, yaffs_tnode_t *tn, -+ unsigned pos) - { -- yaffs_Object *obj; -- int i; -- struct ylist_head *lh; -+ __u32 *map = (__u32 *)tn; -+ __u32 bitInMap; -+ __u32 bitInWord; -+ __u32 wordInMap; -+ __u32 val; - -- if (yaffs_SkipVerification(dev)) -- return; -+ pos &= YAFFS_TNODES_LEVEL0_MASK; - -- /* Iterate through the objects in each hash entry */ -+ bitInMap = pos * dev->tnode_width; -+ wordInMap = bitInMap / 32; -+ bitInWord = bitInMap & (32 - 1); - -- for (i = 0; i < YAFFS_NOBJECT_BUCKETS; i++) { -- ylist_for_each(lh, &dev->objectBucket[i].list) { -- if (lh) { -- obj = ylist_entry(lh, yaffs_Object, hashLink); -- yaffs_VerifyObject(obj); -- } -- } -- } --} -+ val = map[wordInMap] >> bitInWord; - -+ if (dev->tnode_width > (32 - bitInWord)) { -+ bitInWord = (32 - bitInWord); -+ wordInMap++;; -+ val |= (map[wordInMap] << bitInWord); -+ } - --/* -- * Simple hash function. Needs to have a reasonable spread -- */ -+ val &= dev->tnode_mask; -+ val <<= dev->chunk_grp_bits; - --static Y_INLINE int yaffs_HashFunction(int n) --{ -- n = abs(n); -- return n % YAFFS_NOBJECT_BUCKETS; -+ return val; - } - --/* -- * Access functions to useful fake objects. -- * Note that root might have a presence in NAND if permissions are set. -+/* ------------------- End of individual tnode manipulation -----------------*/ -+ -+/* ---------Functions to manipulate the look-up tree (made up of tnodes) ------ -+ * The look up tree is represented by the top tnode and the number of top_level -+ * in the tree. 0 means only the level 0 tnode is in the tree. - */ - --yaffs_Object *yaffs_Root(yaffs_Device *dev) -+/* FindLevel0Tnode finds the level 0 tnode, if one exists. */ -+yaffs_tnode_t *yaffs_find_tnode_0(yaffs_dev_t *dev, -+ yaffs_file_s *file_struct, -+ __u32 chunk_id) - { -- return dev->rootDir; --} -+ yaffs_tnode_t *tn = file_struct->top; -+ __u32 i; -+ int requiredTallness; -+ int level = file_struct->top_level; - --yaffs_Object *yaffs_LostNFound(yaffs_Device *dev) --{ -- return dev->lostNFoundDir; --} -+ dev=dev; - -+ /* Check sane level and chunk Id */ -+ if (level < 0 || level > YAFFS_TNODES_MAX_LEVEL) -+ return NULL; - --/* -- * Erased NAND checking functions -- */ -+ if (chunk_id > YAFFS_MAX_CHUNK_ID) -+ return NULL; - --int yaffs_CheckFF(__u8 *buffer, int nBytes) --{ -- /* Horrible, slow implementation */ -- while (nBytes--) { -- if (*buffer != 0xFF) -- return 0; -- buffer++; -+ /* First check we're tall enough (ie enough top_level) */ -+ -+ i = chunk_id >> YAFFS_TNODES_LEVEL0_BITS; -+ requiredTallness = 0; -+ while (i) { -+ i >>= YAFFS_TNODES_INTERNAL_BITS; -+ requiredTallness++; - } -- return 1; --} - --static int yaffs_CheckChunkErased(struct yaffs_DeviceStruct *dev, -- int chunkInNAND) --{ -- int retval = YAFFS_OK; -- __u8 *data = yaffs_GetTempBuffer(dev, __LINE__); -- yaffs_ExtendedTags tags; -- int result; -+ if (requiredTallness > file_struct->top_level) -+ return NULL; /* Not tall enough, so we can't find it */ -+ -+ /* Traverse down to level 0 */ -+ while (level > 0 && tn) { -+ tn = tn->internal[(chunk_id >> -+ (YAFFS_TNODES_LEVEL0_BITS + -+ (level - 1) * -+ YAFFS_TNODES_INTERNAL_BITS)) & -+ YAFFS_TNODES_INTERNAL_MASK]; -+ level--; -+ } - -- result = yaffs_ReadChunkWithTagsFromNAND(dev, chunkInNAND, data, &tags); -+ return tn; -+} - -- if (tags.eccResult > YAFFS_ECC_RESULT_NO_ERROR) -- retval = YAFFS_FAIL; -+/* AddOrFindLevel0Tnode finds the level 0 tnode if it exists, otherwise first expands the tree. -+ * This happens in two steps: -+ * 1. If the tree isn't tall enough, then make it taller. -+ * 2. Scan down the tree towards the level 0 tnode adding tnodes if required. -+ * -+ * Used when modifying the tree. -+ * -+ * If the tn argument is NULL, then a fresh tnode will be added otherwise the specified tn will -+ * be plugged into the ttree. -+ */ - -- if (!yaffs_CheckFF(data, dev->nDataBytesPerChunk) || tags.chunkUsed) { -- T(YAFFS_TRACE_NANDACCESS, -- (TSTR("Chunk %d not erased" TENDSTR), chunkInNAND)); -- retval = YAFFS_FAIL; -- } -+yaffs_tnode_t *yaffs_add_find_tnode_0(yaffs_dev_t *dev, -+ yaffs_file_s *file_struct, -+ __u32 chunk_id, -+ yaffs_tnode_t *passed_tn) -+{ -+ int requiredTallness; -+ int i; -+ int l; -+ yaffs_tnode_t *tn; - -- yaffs_ReleaseTempBuffer(dev, data, __LINE__); -+ __u32 x; - -- return retval; - --} -+ /* Check sane level and page Id */ -+ if (file_struct->top_level < 0 || file_struct->top_level > YAFFS_TNODES_MAX_LEVEL) -+ return NULL; - --static int yaffs_WriteNewChunkWithTagsToNAND(struct yaffs_DeviceStruct *dev, -- const __u8 *data, -- yaffs_ExtendedTags *tags, -- int useReserve) --{ -- int attempts = 0; -- int writeOk = 0; -- int chunk; -+ if (chunk_id > YAFFS_MAX_CHUNK_ID) -+ return NULL; - -- yaffs_InvalidateCheckpoint(dev); -+ /* First check we're tall enough (ie enough top_level) */ - -- do { -- yaffs_BlockInfo *bi = 0; -- int erasedOk = 0; -+ x = chunk_id >> YAFFS_TNODES_LEVEL0_BITS; -+ requiredTallness = 0; -+ while (x) { -+ x >>= YAFFS_TNODES_INTERNAL_BITS; -+ requiredTallness++; -+ } - -- chunk = yaffs_AllocateChunk(dev, useReserve, &bi); -- if (chunk < 0) { -- /* no space */ -- break; -- } - -- /* First check this chunk is erased, if it needs -- * checking. The checking policy (unless forced -- * always on) is as follows: -- * -- * Check the first page we try to write in a block. -- * If the check passes then we don't need to check any -- * more. If the check fails, we check again... -- * If the block has been erased, we don't need to check. -- * -- * However, if the block has been prioritised for gc, -- * then we think there might be something odd about -- * this block and stop using it. -- * -- * Rationale: We should only ever see chunks that have -- * not been erased if there was a partially written -- * chunk due to power loss. This checking policy should -- * catch that case with very few checks and thus save a -- * lot of checks that are most likely not needed. -- */ -- if (bi->gcPrioritise) { -- yaffs_DeleteChunk(dev, chunk, 1, __LINE__); -- /* try another chunk */ -- continue; -- } -+ if (requiredTallness > file_struct->top_level) { -+ /* Not tall enough, gotta make the tree taller */ -+ for (i = file_struct->top_level; i < requiredTallness; i++) { - -- /* let's give it a try */ -- attempts++; -+ tn = yaffs_get_tnode(dev); - --#ifdef CONFIG_YAFFS_ALWAYS_CHECK_CHUNK_ERASED -- bi->skipErasedCheck = 0; --#endif -- if (!bi->skipErasedCheck) { -- erasedOk = yaffs_CheckChunkErased(dev, chunk); -- if (erasedOk != YAFFS_OK) { -+ if (tn) { -+ tn->internal[0] = file_struct->top; -+ file_struct->top = tn; -+ file_struct->top_level++; -+ } else { - T(YAFFS_TRACE_ERROR, -- (TSTR("**>> yaffs chunk %d was not erased" -- TENDSTR), chunk)); -- -- /* try another chunk */ -- continue; -+ (TSTR("yaffs: no more tnodes" TENDSTR))); -+ return NULL; - } -- bi->skipErasedCheck = 1; - } -+ } - -- writeOk = yaffs_WriteChunkWithTagsToNAND(dev, chunk, -- data, tags); -- if (writeOk != YAFFS_OK) { -- yaffs_HandleWriteChunkError(dev, chunk, erasedOk); -- /* try another chunk */ -- continue; -- } -+ /* Traverse down to level 0, adding anything we need */ - -- /* Copy the data into the robustification buffer */ -- yaffs_HandleWriteChunkOk(dev, chunk, data, tags); -+ l = file_struct->top_level; -+ tn = file_struct->top; - -- } while (writeOk != YAFFS_OK && -- (yaffs_wr_attempts <= 0 || attempts <= yaffs_wr_attempts)); -+ if (l > 0) { -+ while (l > 0 && tn) { -+ x = (chunk_id >> -+ (YAFFS_TNODES_LEVEL0_BITS + -+ (l - 1) * YAFFS_TNODES_INTERNAL_BITS)) & -+ YAFFS_TNODES_INTERNAL_MASK; - -- if (!writeOk) -- chunk = -1; - -- if (attempts > 1) { -- T(YAFFS_TRACE_ERROR, -- (TSTR("**>> yaffs write required %d attempts" TENDSTR), -- attempts)); -+ if ((l > 1) && !tn->internal[x]) { -+ /* Add missing non-level-zero tnode */ -+ tn->internal[x] = yaffs_get_tnode(dev); -+ if(!tn->internal[x]) -+ return NULL; -+ } else if (l == 1) { -+ /* Looking from level 1 at level 0 */ -+ if (passed_tn) { -+ /* If we already have one, then release it.*/ -+ if (tn->internal[x]) -+ yaffs_free_tnode(dev, tn->internal[x]); -+ tn->internal[x] = passed_tn; -+ -+ } else if (!tn->internal[x]) { -+ /* Don't have one, none passed in */ -+ tn->internal[x] = yaffs_get_tnode(dev); -+ if(!tn->internal[x]) -+ return NULL; -+ } -+ } - -- dev->nRetriedWrites += (attempts - 1); -+ tn = tn->internal[x]; -+ l--; -+ } -+ } else { -+ /* top is level 0 */ -+ if (passed_tn) { -+ memcpy(tn, passed_tn, (dev->tnode_width * YAFFS_NTNODES_LEVEL0)/8); -+ yaffs_free_tnode(dev, passed_tn); -+ } - } - -- return chunk; -+ return tn; - } - --/* -- * Block retiring for handling a broken block. -- */ -- --static void yaffs_RetireBlock(yaffs_Device *dev, int blockInNAND) -+static int yaffs_find_chunk_in_group(yaffs_dev_t *dev, int theChunk, -+ yaffs_ext_tags *tags, int obj_id, -+ int inode_chunk) - { -- yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, blockInNAND); -+ int j; - -- yaffs_InvalidateCheckpoint(dev); -+ for (j = 0; theChunk && j < dev->chunk_grp_size; j++) { -+ if (yaffs_check_chunk_bit(dev, theChunk / dev->param.chunks_per_block, -+ theChunk % dev->param.chunks_per_block)) { -+ -+ if(dev->chunk_grp_size == 1) -+ return theChunk; -+ else { -+ yaffs_rd_chunk_tags_nand(dev, theChunk, NULL, -+ tags); -+ if (yaffs_tags_match(tags, obj_id, inode_chunk)) { -+ /* found it; */ -+ return theChunk; -+ } -+ } -+ } -+ theChunk++; -+ } -+ return -1; -+} - -- if (yaffs_MarkBlockBad(dev, blockInNAND) != YAFFS_OK) { -- if (yaffs_EraseBlockInNAND(dev, blockInNAND) != YAFFS_OK) { -- T(YAFFS_TRACE_ALWAYS, (TSTR( -- "yaffs: Failed to mark bad and erase block %d" -- TENDSTR), blockInNAND)); -- } else { -- yaffs_ExtendedTags tags; -- int chunkId = blockInNAND * dev->nChunksPerBlock; -+#if 0 -+/* Experimental code not being used yet. Might speed up file deletion */ -+/* DeleteWorker scans backwards through the tnode tree and deletes all the -+ * chunks and tnodes in the file. -+ * Returns 1 if the tree was deleted. -+ * Returns 0 if it stopped early due to hitting the limit and the delete is incomplete. -+ */ - -- __u8 *buffer = yaffs_GetTempBuffer(dev, __LINE__); -+static int yaffs_del_worker(yaffs_obj_t *in, yaffs_tnode_t *tn, __u32 level, -+ int chunk_offset, int *limit) -+{ -+ int i; -+ int inode_chunk; -+ int theChunk; -+ yaffs_ext_tags tags; -+ int foundChunk; -+ yaffs_dev_t *dev = in->my_dev; - -- memset(buffer, 0xff, dev->nDataBytesPerChunk); -- yaffs_InitialiseTags(&tags); -- tags.sequenceNumber = YAFFS_SEQUENCE_BAD_BLOCK; -- if (dev->writeChunkWithTagsToNAND(dev, chunkId - -- dev->chunkOffset, buffer, &tags) != YAFFS_OK) -- T(YAFFS_TRACE_ALWAYS, (TSTR("yaffs: Failed to " -- TCONT("write bad block marker to block %d") -- TENDSTR), blockInNAND)); -+ int allDone = 1; - -- yaffs_ReleaseTempBuffer(dev, buffer, __LINE__); -- } -- } -+ if (tn) { -+ if (level > 0) { -+ for (i = YAFFS_NTNODES_INTERNAL - 1; allDone && i >= 0; -+ i--) { -+ if (tn->internal[i]) { -+ if (limit && (*limit) < 0) { -+ allDone = 0; -+ } else { -+ allDone = -+ yaffs_del_worker(in, -+ tn-> -+ internal -+ [i], -+ level - -+ 1, -+ (chunk_offset -+ << -+ YAFFS_TNODES_INTERNAL_BITS) -+ + i, -+ limit); -+ } -+ if (allDone) { -+ yaffs_free_tnode(dev, -+ tn-> -+ internal[i]); -+ tn->internal[i] = NULL; -+ } -+ } -+ } -+ return (allDone) ? 1 : 0; -+ } else if (level == 0) { -+ int hitLimit = 0; - -- bi->blockState = YAFFS_BLOCK_STATE_DEAD; -- bi->gcPrioritise = 0; -- bi->needsRetiring = 0; -+ for (i = YAFFS_NTNODES_LEVEL0 - 1; i >= 0 && !hitLimit; -+ i--) { -+ theChunk = yaffs_get_group_base(dev, tn, i); -+ if (theChunk) { - -- dev->nRetiredBlocks++; --} -+ inode_chunk = (chunk_offset << -+ YAFFS_TNODES_LEVEL0_BITS) + i; - --/* -- * Functions for robustisizing TODO -- * -- */ -+ foundChunk = -+ yaffs_find_chunk_in_group(dev, -+ theChunk, -+ &tags, -+ in->obj_id, -+ inode_chunk); - --static void yaffs_HandleWriteChunkOk(yaffs_Device *dev, int chunkInNAND, -- const __u8 *data, -- const yaffs_ExtendedTags *tags) --{ --} -+ if (foundChunk > 0) { -+ yaffs_chunk_del(dev, -+ foundChunk, 1, -+ __LINE__); -+ in->n_data_chunks--; -+ if (limit) { -+ *limit = *limit - 1; -+ if (*limit <= 0) -+ hitLimit = 1; -+ } - --static void yaffs_HandleUpdateChunk(yaffs_Device *dev, int chunkInNAND, -- const yaffs_ExtendedTags *tags) --{ --} -+ } - --void yaffs_HandleChunkError(yaffs_Device *dev, yaffs_BlockInfo *bi) --{ -- if (!bi->gcPrioritise) { -- bi->gcPrioritise = 1; -- dev->hasPendingPrioritisedGCs = 1; -- bi->chunkErrorStrikes++; -+ yaffs_load_tnode_0(dev, tn, i, 0); -+ } - -- if (bi->chunkErrorStrikes > 3) { -- bi->needsRetiring = 1; /* Too many stikes, so retire this */ -- T(YAFFS_TRACE_ALWAYS, (TSTR("yaffs: Block struck out" TENDSTR))); -+ } -+ return (i < 0) ? 1 : 0; - - } -+ - } -+ -+ return 1; -+ - } - --static void yaffs_HandleWriteChunkError(yaffs_Device *dev, int chunkInNAND, -- int erasedOk) -+#endif -+ -+static void yaffs_soft_del_chunk(yaffs_dev_t *dev, int chunk) - { -- int blockInNAND = chunkInNAND / dev->nChunksPerBlock; -- yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, blockInNAND); -+ yaffs_block_info_t *theBlock; -+ unsigned block_no; - -- yaffs_HandleChunkError(dev, bi); -+ T(YAFFS_TRACE_DELETION, (TSTR("soft delete chunk %d" TENDSTR), chunk)); - -- if (erasedOk) { -- /* Was an actual write failure, so mark the block for retirement */ -- bi->needsRetiring = 1; -- T(YAFFS_TRACE_ERROR | YAFFS_TRACE_BAD_BLOCKS, -- (TSTR("**>> Block %d needs retiring" TENDSTR), blockInNAND)); -+ block_no = chunk / dev->param.chunks_per_block; -+ theBlock = yaffs_get_block_info(dev, block_no); -+ if (theBlock) { -+ theBlock->soft_del_pages++; -+ dev->n_free_chunks++; -+ yaffs2_update_oldest_dirty_seq(dev, block_no, theBlock); - } -- -- /* Delete the chunk */ -- yaffs_DeleteChunk(dev, chunkInNAND, 1, __LINE__); - } - -+/* SoftDeleteWorker scans backwards through the tnode tree and soft deletes all the chunks in the file. -+ * All soft deleting does is increment the block's softdelete count and pulls the chunk out -+ * of the tnode. -+ * Thus, essentially this is the same as DeleteWorker except that the chunks are soft deleted. -+ */ - --/*---------------- Name handling functions ------------*/ -- --static __u16 yaffs_CalcNameSum(const YCHAR *name) -+static int yaffs_soft_del_worker(yaffs_obj_t *in, yaffs_tnode_t *tn, -+ __u32 level, int chunk_offset) - { -- __u16 sum = 0; -- __u16 i = 1; -+ int i; -+ int theChunk; -+ int allDone = 1; -+ yaffs_dev_t *dev = in->my_dev; - -- const YUCHAR *bname = (const YUCHAR *) name; -- if (bname) { -- while ((*bname) && (i < (YAFFS_MAX_NAME_LENGTH/2))) { -+ if (tn) { -+ if (level > 0) { -+ -+ for (i = YAFFS_NTNODES_INTERNAL - 1; allDone && i >= 0; -+ i--) { -+ if (tn->internal[i]) { -+ allDone = -+ yaffs_soft_del_worker(in, -+ tn-> -+ internal[i], -+ level - 1, -+ (chunk_offset -+ << -+ YAFFS_TNODES_INTERNAL_BITS) -+ + i); -+ if (allDone) { -+ yaffs_free_tnode(dev, -+ tn-> -+ internal[i]); -+ tn->internal[i] = NULL; -+ } else { -+ /* Hoosterman... how could this happen? */ -+ } -+ } -+ } -+ return (allDone) ? 1 : 0; -+ } else if (level == 0) { -+ -+ for (i = YAFFS_NTNODES_LEVEL0 - 1; i >= 0; i--) { -+ theChunk = yaffs_get_group_base(dev, tn, i); -+ if (theChunk) { -+ /* Note this does not find the real chunk, only the chunk group. -+ * We make an assumption that a chunk group is not larger than -+ * a block. -+ */ -+ yaffs_soft_del_chunk(dev, theChunk); -+ yaffs_load_tnode_0(dev, tn, i, 0); -+ } -+ -+ } -+ return 1; - --#ifdef CONFIG_YAFFS_CASE_INSENSITIVE -- sum += yaffs_toupper(*bname) * i; --#else -- sum += (*bname) * i; --#endif -- i++; -- bname++; - } -+ - } -- return sum; -+ -+ return 1; -+ - } - --static void yaffs_SetObjectName(yaffs_Object *obj, const YCHAR *name) -+static void yaffs_soft_del_file(yaffs_obj_t *obj) - { --#ifdef CONFIG_YAFFS_SHORT_NAMES_IN_RAM -- memset(obj->shortName, 0, sizeof(YCHAR) * (YAFFS_SHORT_NAME_LENGTH+1)); -- if (name && yaffs_strlen(name) <= YAFFS_SHORT_NAME_LENGTH) -- yaffs_strcpy(obj->shortName, name); -- else -- obj->shortName[0] = _Y('\0'); --#endif -- obj->sum = yaffs_CalcNameSum(name); -+ if (obj->deleted && -+ obj->variant_type == YAFFS_OBJECT_TYPE_FILE && !obj->soft_del) { -+ if (obj->n_data_chunks <= 0) { -+ /* Empty file with no duplicate object headers, just delete it immediately */ -+ yaffs_free_tnode(obj->my_dev, -+ obj->variant.file_variant.top); -+ obj->variant.file_variant.top = NULL; -+ T(YAFFS_TRACE_TRACING, -+ (TSTR("yaffs: Deleting empty file %d" TENDSTR), -+ obj->obj_id)); -+ yaffs_generic_obj_del(obj); -+ } else { -+ yaffs_soft_del_worker(obj, -+ obj->variant.file_variant.top, -+ obj->variant.file_variant. -+ top_level, 0); -+ obj->soft_del = 1; -+ } -+ } - } - --/*-------------------- TNODES ------------------- -- -- * List of spare tnodes -- * The list is hooked together using the first pointer -- * in the tnode. -- */ -- --/* yaffs_CreateTnodes creates a bunch more tnodes and -- * adds them to the tnode free list. -- * Don't use this function directly -+/* Pruning removes any part of the file structure tree that is beyond the -+ * bounds of the file (ie that does not point to chunks). -+ * -+ * A file should only get pruned when its size is reduced. -+ * -+ * Before pruning, the chunks must be pulled from the tree and the -+ * level 0 tnode entries must be zeroed out. -+ * Could also use this for file deletion, but that's probably better handled -+ * by a special case. -+ * -+ * This function is recursive. For levels > 0 the function is called again on -+ * any sub-tree. For level == 0 we just check if the sub-tree has data. -+ * If there is no data in a subtree then it is pruned. - */ - --static int yaffs_CreateTnodes(yaffs_Device *dev, int nTnodes) -+static yaffs_tnode_t *yaffs_prune_worker(yaffs_dev_t *dev, yaffs_tnode_t *tn, -+ __u32 level, int del0) - { - int i; -- int tnodeSize; -- yaffs_Tnode *newTnodes; -- __u8 *mem; -- yaffs_Tnode *curr; -- yaffs_Tnode *next; -- yaffs_TnodeList *tnl; -+ int hasData; - -- if (nTnodes < 1) -- return YAFFS_OK; -+ if (tn) { -+ hasData = 0; - -- /* Calculate the tnode size in bytes for variable width tnode support. -- * Must be a multiple of 32-bits */ -- tnodeSize = (dev->tnodeWidth * YAFFS_NTNODES_LEVEL0)/8; -+ if(level > 0){ -+ for (i = 0; i < YAFFS_NTNODES_INTERNAL; i++) { -+ if (tn->internal[i]) { -+ tn->internal[i] = -+ yaffs_prune_worker(dev, tn->internal[i], -+ level - 1, -+ (i == 0) ? del0 : 1); -+ } - -- if (tnodeSize < sizeof(yaffs_Tnode)) -- tnodeSize = sizeof(yaffs_Tnode); -+ if (tn->internal[i]) -+ hasData++; -+ } -+ } else { -+ int tnode_size_u32 = dev->tnode_size/sizeof(__u32); -+ __u32 *map = (__u32 *)tn; - -- /* make these things */ -+ for(i = 0; !hasData && i < tnode_size_u32; i++){ -+ if(map[i]) -+ hasData++; -+ } -+ } - -- newTnodes = YMALLOC(nTnodes * tnodeSize); -- mem = (__u8 *)newTnodes; -+ if (hasData == 0 && del0) { -+ /* Free and return NULL */ - -- if (!newTnodes) { -- T(YAFFS_TRACE_ERROR, -- (TSTR("yaffs: Could not allocate Tnodes" TENDSTR))); -- return YAFFS_FAIL; -- } -+ yaffs_free_tnode(dev, tn); -+ tn = NULL; -+ } - -- /* Hook them into the free list */ --#if 0 -- for (i = 0; i < nTnodes - 1; i++) { -- newTnodes[i].internal[0] = &newTnodes[i + 1]; --#ifdef CONFIG_YAFFS_TNODE_LIST_DEBUG -- newTnodes[i].internal[YAFFS_NTNODES_INTERNAL] = (void *)1; --#endif - } - -- newTnodes[nTnodes - 1].internal[0] = dev->freeTnodes; --#ifdef CONFIG_YAFFS_TNODE_LIST_DEBUG -- newTnodes[nTnodes - 1].internal[YAFFS_NTNODES_INTERNAL] = (void *)1; --#endif -- dev->freeTnodes = newTnodes; --#else -- /* New hookup for wide tnodes */ -- for (i = 0; i < nTnodes - 1; i++) { -- curr = (yaffs_Tnode *) &mem[i * tnodeSize]; -- next = (yaffs_Tnode *) &mem[(i+1) * tnodeSize]; -- curr->internal[0] = next; -- } -+ return tn; - -- curr = (yaffs_Tnode *) &mem[(nTnodes - 1) * tnodeSize]; -- curr->internal[0] = dev->freeTnodes; -- dev->freeTnodes = (yaffs_Tnode *)mem; -+} - --#endif -+static int yaffs_prune_tree(yaffs_dev_t *dev, -+ yaffs_file_s *file_struct) -+{ -+ int i; -+ int hasData; -+ int done = 0; -+ yaffs_tnode_t *tn; - -+ if (file_struct->top_level > 0) { -+ file_struct->top = -+ yaffs_prune_worker(dev, file_struct->top, file_struct->top_level, 0); -+ -+ /* Now we have a tree with all the non-zero branches NULL but the height -+ * is the same as it was. -+ * Let's see if we can trim internal tnodes to shorten the tree. -+ * We can do this if only the 0th element in the tnode is in use -+ * (ie all the non-zero are NULL) -+ */ - -- dev->nFreeTnodes += nTnodes; -- dev->nTnodesCreated += nTnodes; -+ while (file_struct->top_level && !done) { -+ tn = file_struct->top; - -- /* Now add this bunch of tnodes to a list for freeing up. -- * NB If we can't add this to the management list it isn't fatal -- * but it just means we can't free this bunch of tnodes later. -- */ -+ hasData = 0; -+ for (i = 1; i < YAFFS_NTNODES_INTERNAL; i++) { -+ if (tn->internal[i]) -+ hasData++; -+ } - -- tnl = YMALLOC(sizeof(yaffs_TnodeList)); -- if (!tnl) { -- T(YAFFS_TRACE_ERROR, -- (TSTR -- ("yaffs: Could not add tnodes to management list" TENDSTR))); -- return YAFFS_FAIL; -- } else { -- tnl->tnodes = newTnodes; -- tnl->next = dev->allocatedTnodeList; -- dev->allocatedTnodeList = tnl; -+ if (!hasData) { -+ file_struct->top = tn->internal[0]; -+ file_struct->top_level--; -+ yaffs_free_tnode(dev, tn); -+ } else { -+ done = 1; -+ } -+ } - } - -- T(YAFFS_TRACE_ALLOCATE, (TSTR("yaffs: Tnodes added" TENDSTR))); -- - return YAFFS_OK; - } - --/* GetTnode gets us a clean tnode. Tries to make allocate more if we run out */ -+/*-------------------- End of File Structure functions.-------------------*/ -+ - --static yaffs_Tnode *yaffs_GetTnodeRaw(yaffs_Device *dev) -+/* AllocateEmptyObject gets us a clean Object. Tries to make allocate more if we run out */ -+static yaffs_obj_t *yaffs_alloc_empty_obj(yaffs_dev_t *dev) - { -- yaffs_Tnode *tn = NULL; -+ yaffs_obj_t *obj = yaffs_alloc_raw_obj(dev); - -- /* If there are none left make more */ -- if (!dev->freeTnodes) -- yaffs_CreateTnodes(dev, YAFFS_ALLOCATION_NTNODES); -- -- if (dev->freeTnodes) { -- tn = dev->freeTnodes; --#ifdef CONFIG_YAFFS_TNODE_LIST_DEBUG -- if (tn->internal[YAFFS_NTNODES_INTERNAL] != (void *)1) { -- /* Hoosterman, this thing looks like it isn't in the list */ -- T(YAFFS_TRACE_ALWAYS, -- (TSTR("yaffs: Tnode list bug 1" TENDSTR))); -- } --#endif -- dev->freeTnodes = dev->freeTnodes->internal[0]; -- dev->nFreeTnodes--; -- } -+ if (obj) { -+ dev->n_obj++; - -- dev->nCheckpointBlocksRequired = 0; /* force recalculation*/ -+ /* Now sweeten it up... */ - -- return tn; --} -+ memset(obj, 0, sizeof(yaffs_obj_t)); -+ obj->being_created = 1; - --static yaffs_Tnode *yaffs_GetTnode(yaffs_Device *dev) --{ -- yaffs_Tnode *tn = yaffs_GetTnodeRaw(dev); -- int tnodeSize = (dev->tnodeWidth * YAFFS_NTNODES_LEVEL0)/8; -+ obj->my_dev = dev; -+ obj->hdr_chunk = 0; -+ obj->variant_type = YAFFS_OBJECT_TYPE_UNKNOWN; -+ YINIT_LIST_HEAD(&(obj->hard_links)); -+ YINIT_LIST_HEAD(&(obj->hash_link)); -+ YINIT_LIST_HEAD(&obj->siblings); - -- if (tnodeSize < sizeof(yaffs_Tnode)) -- tnodeSize = sizeof(yaffs_Tnode); - -- if (tn) -- memset(tn, 0, tnodeSize); -+ /* Now make the directory sane */ -+ if (dev->root_dir) { -+ obj->parent = dev->root_dir; -+ ylist_add(&(obj->siblings), &dev->root_dir->variant.dir_variant.children); -+ } - -- return tn; -+ /* Add it to the lost and found directory. -+ * NB Can't put root or lostNFound in lostNFound so -+ * check if lostNFound exists first -+ */ -+ if (dev->lost_n_found) -+ yaffs_add_obj_to_dir(dev->lost_n_found, obj); -+ -+ obj->being_created = 0; -+ } -+ -+ dev->checkpoint_blocks_required = 0; /* force recalculation*/ -+ -+ return obj; - } - --/* FreeTnode frees up a tnode and puts it back on the free list */ --static void yaffs_FreeTnode(yaffs_Device *dev, yaffs_Tnode *tn) -+static yaffs_obj_t *yaffs_create_fake_dir(yaffs_dev_t *dev, int number, -+ __u32 mode) - { -- if (tn) { --#ifdef CONFIG_YAFFS_TNODE_LIST_DEBUG -- if (tn->internal[YAFFS_NTNODES_INTERNAL] != 0) { -- /* Hoosterman, this thing looks like it is already in the list */ -- T(YAFFS_TRACE_ALWAYS, -- (TSTR("yaffs: Tnode list bug 2" TENDSTR))); -- } -- tn->internal[YAFFS_NTNODES_INTERNAL] = (void *)1; --#endif -- tn->internal[0] = dev->freeTnodes; -- dev->freeTnodes = tn; -- dev->nFreeTnodes++; -+ -+ yaffs_obj_t *obj = -+ yaffs_new_obj(dev, number, YAFFS_OBJECT_TYPE_DIRECTORY); -+ if (obj) { -+ obj->fake = 1; /* it is fake so it might have no NAND presence... */ -+ obj->rename_allowed = 0; /* ... and we're not allowed to rename it... */ -+ obj->unlink_allowed = 0; /* ... or unlink it */ -+ obj->deleted = 0; -+ obj->unlinked = 0; -+ obj->yst_mode = mode; -+ obj->my_dev = dev; -+ obj->hdr_chunk = 0; /* Not a valid chunk. */ -+ } -+ -+ return obj; -+ -+} -+ -+static void yaffs_unhash_obj(yaffs_obj_t *obj) -+{ -+ int bucket; -+ yaffs_dev_t *dev = obj->my_dev; -+ -+ /* If it is still linked into the bucket list, free from the list */ -+ if (!ylist_empty(&obj->hash_link)) { -+ ylist_del_init(&obj->hash_link); -+ bucket = yaffs_hash_fn(obj->obj_id); -+ dev->obj_bucket[bucket].count--; - } -- dev->nCheckpointBlocksRequired = 0; /* force recalculation*/ - } - --static void yaffs_DeinitialiseTnodes(yaffs_Device *dev) -+/* FreeObject frees up a Object and puts it back on the free list */ -+static void yaffs_free_obj(yaffs_obj_t *obj) - { -- /* Free the list of allocated tnodes */ -- yaffs_TnodeList *tmp; -+ yaffs_dev_t *dev = obj->my_dev; -+ -+ T(YAFFS_TRACE_OS, (TSTR("FreeObject %p inode %p"TENDSTR), obj, obj->my_inode)); - -- while (dev->allocatedTnodeList) { -- tmp = dev->allocatedTnodeList->next; -+ if (!obj) -+ YBUG(); -+ if (obj->parent) -+ YBUG(); -+ if (!ylist_empty(&obj->siblings)) -+ YBUG(); - -- YFREE(dev->allocatedTnodeList->tnodes); -- YFREE(dev->allocatedTnodeList); -- dev->allocatedTnodeList = tmp; - -+ if (obj->my_inode) { -+ /* We're still hooked up to a cached inode. -+ * Don't delete now, but mark for later deletion -+ */ -+ obj->defered_free = 1; -+ return; - } - -- dev->freeTnodes = NULL; -- dev->nFreeTnodes = 0; --} -+ yaffs_unhash_obj(obj); - --static void yaffs_InitialiseTnodes(yaffs_Device *dev) --{ -- dev->allocatedTnodeList = NULL; -- dev->freeTnodes = NULL; -- dev->nFreeTnodes = 0; -- dev->nTnodesCreated = 0; -+ yaffs_free_raw_obj(dev,obj); -+ dev->n_obj--; -+ dev->checkpoint_blocks_required = 0; /* force recalculation*/ - } - - --void yaffs_PutLevel0Tnode(yaffs_Device *dev, yaffs_Tnode *tn, unsigned pos, -- unsigned val) -+void yaffs_handle_defered_free(yaffs_obj_t *obj) - { -- __u32 *map = (__u32 *)tn; -- __u32 bitInMap; -- __u32 bitInWord; -- __u32 wordInMap; -- __u32 mask; -- -- pos &= YAFFS_TNODES_LEVEL0_MASK; -- val >>= dev->chunkGroupBits; -+ if (obj->defered_free) -+ yaffs_free_obj(obj); -+} - -- bitInMap = pos * dev->tnodeWidth; -- wordInMap = bitInMap / 32; -- bitInWord = bitInMap & (32 - 1); -+static void yaffs_init_tnodes_and_objs(yaffs_dev_t *dev) -+{ -+ int i; - -- mask = dev->tnodeMask << bitInWord; -+ dev->n_obj = 0; -+ dev->n_tnodes = 0; - -- map[wordInMap] &= ~mask; -- map[wordInMap] |= (mask & (val << bitInWord)); -+ yaffs_init_raw_tnodes_and_objs(dev); - -- if (dev->tnodeWidth > (32 - bitInWord)) { -- bitInWord = (32 - bitInWord); -- wordInMap++;; -- mask = dev->tnodeMask >> (/*dev->tnodeWidth -*/ bitInWord); -- map[wordInMap] &= ~mask; -- map[wordInMap] |= (mask & (val >> bitInWord)); -+ for (i = 0; i < YAFFS_NOBJECT_BUCKETS; i++) { -+ YINIT_LIST_HEAD(&dev->obj_bucket[i].list); -+ dev->obj_bucket[i].count = 0; - } - } - --static __u32 yaffs_GetChunkGroupBase(yaffs_Device *dev, yaffs_Tnode *tn, -- unsigned pos) -+static int yaffs_find_nice_bucket(yaffs_dev_t *dev) - { -- __u32 *map = (__u32 *)tn; -- __u32 bitInMap; -- __u32 bitInWord; -- __u32 wordInMap; -- __u32 val; -+ int i; -+ int l = 999; -+ int lowest = 999999; - -- pos &= YAFFS_TNODES_LEVEL0_MASK; - -- bitInMap = pos * dev->tnodeWidth; -- wordInMap = bitInMap / 32; -- bitInWord = bitInMap & (32 - 1); -+ /* Search for the shortest list or one that -+ * isn't too long. -+ */ - -- val = map[wordInMap] >> bitInWord; -+ for (i = 0; i < 10 && lowest > 4; i++) { -+ dev->bucket_finder++; -+ dev->bucket_finder %= YAFFS_NOBJECT_BUCKETS; -+ if (dev->obj_bucket[dev->bucket_finder].count < lowest) { -+ lowest = dev->obj_bucket[dev->bucket_finder].count; -+ l = dev->bucket_finder; -+ } - -- if (dev->tnodeWidth > (32 - bitInWord)) { -- bitInWord = (32 - bitInWord); -- wordInMap++;; -- val |= (map[wordInMap] << bitInWord); - } - -- val &= dev->tnodeMask; -- val <<= dev->chunkGroupBits; -- -- return val; -+ return l; - } - --/* ------------------- End of individual tnode manipulation -----------------*/ -- --/* ---------Functions to manipulate the look-up tree (made up of tnodes) ------ -- * The look up tree is represented by the top tnode and the number of topLevel -- * in the tree. 0 means only the level 0 tnode is in the tree. -- */ -- --/* FindLevel0Tnode finds the level 0 tnode, if one exists. */ --static yaffs_Tnode *yaffs_FindLevel0Tnode(yaffs_Device *dev, -- yaffs_FileStructure *fStruct, -- __u32 chunkId) -+static int yaffs_new_obj_id(yaffs_dev_t *dev) - { -- yaffs_Tnode *tn = fStruct->top; -- __u32 i; -- int requiredTallness; -- int level = fStruct->topLevel; -- -- /* Check sane level and chunk Id */ -- if (level < 0 || level > YAFFS_TNODES_MAX_LEVEL) -- return NULL; -+ int bucket = yaffs_find_nice_bucket(dev); - -- if (chunkId > YAFFS_MAX_CHUNK_ID) -- return NULL; -+ /* Now find an object value that has not already been taken -+ * by scanning the list. -+ */ - -- /* First check we're tall enough (ie enough topLevel) */ -+ int found = 0; -+ struct ylist_head *i; - -- i = chunkId >> YAFFS_TNODES_LEVEL0_BITS; -- requiredTallness = 0; -- while (i) { -- i >>= YAFFS_TNODES_INTERNAL_BITS; -- requiredTallness++; -- } -+ __u32 n = (__u32) bucket; - -- if (requiredTallness > fStruct->topLevel) -- return NULL; /* Not tall enough, so we can't find it */ -+ /* yaffs_check_obj_hash_sane(); */ - -- /* Traverse down to level 0 */ -- while (level > 0 && tn) { -- tn = tn->internal[(chunkId >> -- (YAFFS_TNODES_LEVEL0_BITS + -- (level - 1) * -- YAFFS_TNODES_INTERNAL_BITS)) & -- YAFFS_TNODES_INTERNAL_MASK]; -- level--; -+ while (!found) { -+ found = 1; -+ n += YAFFS_NOBJECT_BUCKETS; -+ if (1 || dev->obj_bucket[bucket].count > 0) { -+ ylist_for_each(i, &dev->obj_bucket[bucket].list) { -+ /* If there is already one in the list */ -+ if (i && ylist_entry(i, yaffs_obj_t, -+ hash_link)->obj_id == n) { -+ found = 0; -+ } -+ } -+ } - } - -- return tn; -+ return n; - } - --/* AddOrFindLevel0Tnode finds the level 0 tnode if it exists, otherwise first expands the tree. -- * This happens in two steps: -- * 1. If the tree isn't tall enough, then make it taller. -- * 2. Scan down the tree towards the level 0 tnode adding tnodes if required. -- * -- * Used when modifying the tree. -- * -- * If the tn argument is NULL, then a fresh tnode will be added otherwise the specified tn will -- * be plugged into the ttree. -- */ -- --static yaffs_Tnode *yaffs_AddOrFindLevel0Tnode(yaffs_Device *dev, -- yaffs_FileStructure *fStruct, -- __u32 chunkId, -- yaffs_Tnode *passedTn) -+static void yaffs_hash_obj(yaffs_obj_t *in) - { -- int requiredTallness; -- int i; -- int l; -- yaffs_Tnode *tn; -- -- __u32 x; -+ int bucket = yaffs_hash_fn(in->obj_id); -+ yaffs_dev_t *dev = in->my_dev; - -+ ylist_add(&in->hash_link, &dev->obj_bucket[bucket].list); -+ dev->obj_bucket[bucket].count++; -+} - -- /* Check sane level and page Id */ -- if (fStruct->topLevel < 0 || fStruct->topLevel > YAFFS_TNODES_MAX_LEVEL) -- return NULL; -+yaffs_obj_t *yaffs_find_by_number(yaffs_dev_t *dev, __u32 number) -+{ -+ int bucket = yaffs_hash_fn(number); -+ struct ylist_head *i; -+ yaffs_obj_t *in; - -- if (chunkId > YAFFS_MAX_CHUNK_ID) -- return NULL; -+ ylist_for_each(i, &dev->obj_bucket[bucket].list) { -+ /* Look if it is in the list */ -+ if (i) { -+ in = ylist_entry(i, yaffs_obj_t, hash_link); -+ if (in->obj_id == number) { - -- /* First check we're tall enough (ie enough topLevel) */ -+ /* Don't tell the VFS about this one if it is defered free */ -+ if (in->defered_free) -+ return NULL; - -- x = chunkId >> YAFFS_TNODES_LEVEL0_BITS; -- requiredTallness = 0; -- while (x) { -- x >>= YAFFS_TNODES_INTERNAL_BITS; -- requiredTallness++; -+ return in; -+ } -+ } - } - -+ return NULL; -+} - -- if (requiredTallness > fStruct->topLevel) { -- /* Not tall enough, gotta make the tree taller */ -- for (i = fStruct->topLevel; i < requiredTallness; i++) { -+yaffs_obj_t *yaffs_new_obj(yaffs_dev_t *dev, int number, -+ yaffs_obj_type type) -+{ -+ yaffs_obj_t *theObject=NULL; -+ yaffs_tnode_t *tn = NULL; - -- tn = yaffs_GetTnode(dev); -+ if (number < 0) -+ number = yaffs_new_obj_id(dev); - -- if (tn) { -- tn->internal[0] = fStruct->top; -- fStruct->top = tn; -- } else { -- T(YAFFS_TRACE_ERROR, -- (TSTR("yaffs: no more tnodes" TENDSTR))); -- } -- } -+ if (type == YAFFS_OBJECT_TYPE_FILE) { -+ tn = yaffs_get_tnode(dev); -+ if (!tn) -+ return NULL; -+ } - -- fStruct->topLevel = requiredTallness; -+ theObject = yaffs_alloc_empty_obj(dev); -+ if (!theObject){ -+ if(tn) -+ yaffs_free_tnode(dev,tn); -+ return NULL; - } - -- /* Traverse down to level 0, adding anything we need */ - -- l = fStruct->topLevel; -- tn = fStruct->top; -+ if (theObject) { -+ theObject->fake = 0; -+ theObject->rename_allowed = 1; -+ theObject->unlink_allowed = 1; -+ theObject->obj_id = number; -+ yaffs_hash_obj(theObject); -+ theObject->variant_type = type; -+#ifdef CONFIG_YAFFS_WINCE -+ yfsd_win_file_time_now(theObject->win_atime); -+ theObject->win_ctime[0] = theObject->win_mtime[0] = -+ theObject->win_atime[0]; -+ theObject->win_ctime[1] = theObject->win_mtime[1] = -+ theObject->win_atime[1]; -+ -+#else - -- if (l > 0) { -- while (l > 0 && tn) { -- x = (chunkId >> -- (YAFFS_TNODES_LEVEL0_BITS + -- (l - 1) * YAFFS_TNODES_INTERNAL_BITS)) & -- YAFFS_TNODES_INTERNAL_MASK; -+ theObject->yst_atime = theObject->yst_mtime = -+ theObject->yst_ctime = Y_CURRENT_TIME; -+#endif -+ switch (type) { -+ case YAFFS_OBJECT_TYPE_FILE: -+ theObject->variant.file_variant.file_size = 0; -+ theObject->variant.file_variant.scanned_size = 0; -+ theObject->variant.file_variant.shrink_size = 0xFFFFFFFF; /* max __u32 */ -+ theObject->variant.file_variant.top_level = 0; -+ theObject->variant.file_variant.top = tn; -+ break; -+ case YAFFS_OBJECT_TYPE_DIRECTORY: -+ YINIT_LIST_HEAD(&theObject->variant.dir_variant. -+ children); -+ YINIT_LIST_HEAD(&theObject->variant.dir_variant. -+ dirty); -+ break; -+ case YAFFS_OBJECT_TYPE_SYMLINK: -+ case YAFFS_OBJECT_TYPE_HARDLINK: -+ case YAFFS_OBJECT_TYPE_SPECIAL: -+ /* No action required */ -+ break; -+ case YAFFS_OBJECT_TYPE_UNKNOWN: -+ /* todo this should not happen */ -+ break; -+ } -+ } - -+ return theObject; -+} - -- if ((l > 1) && !tn->internal[x]) { -- /* Add missing non-level-zero tnode */ -- tn->internal[x] = yaffs_GetTnode(dev); -+yaffs_obj_t *yaffs_find_or_create_by_number(yaffs_dev_t *dev, -+ int number, -+ yaffs_obj_type type) -+{ -+ yaffs_obj_t *theObject = NULL; - -- } else if (l == 1) { -- /* Looking from level 1 at level 0 */ -- if (passedTn) { -- /* If we already have one, then release it.*/ -- if (tn->internal[x]) -- yaffs_FreeTnode(dev, tn->internal[x]); -- tn->internal[x] = passedTn; -+ if (number > 0) -+ theObject = yaffs_find_by_number(dev, number); - -- } else if (!tn->internal[x]) { -- /* Don't have one, none passed in */ -- tn->internal[x] = yaffs_GetTnode(dev); -- } -- } -+ if (!theObject) -+ theObject = yaffs_new_obj(dev, number, type); - -- tn = tn->internal[x]; -- l--; -- } -- } else { -- /* top is level 0 */ -- if (passedTn) { -- memcpy(tn, passedTn, (dev->tnodeWidth * YAFFS_NTNODES_LEVEL0)/8); -- yaffs_FreeTnode(dev, passedTn); -- } -- } -+ return theObject; - -- return tn; - } - --static int yaffs_FindChunkInGroup(yaffs_Device *dev, int theChunk, -- yaffs_ExtendedTags *tags, int objectId, -- int chunkInInode) -+ -+YCHAR *yaffs_clone_str(const YCHAR *str) - { -- int j; -+ YCHAR *newStr = NULL; -+ int len; - -- for (j = 0; theChunk && j < dev->chunkGroupSize; j++) { -- if (yaffs_CheckChunkBit(dev, theChunk / dev->nChunksPerBlock, -- theChunk % dev->nChunksPerBlock)) { -- yaffs_ReadChunkWithTagsFromNAND(dev, theChunk, NULL, -- tags); -- if (yaffs_TagsMatch(tags, objectId, chunkInInode)) { -- /* found it; */ -- return theChunk; -- } -- } -- theChunk++; -+ if (!str) -+ str = _Y(""); -+ -+ len = yaffs_strnlen(str,YAFFS_MAX_ALIAS_LENGTH); -+ newStr = YMALLOC((len + 1) * sizeof(YCHAR)); -+ if (newStr){ -+ yaffs_strncpy(newStr, str,len); -+ newStr[len] = 0; - } -- return -1; --} -+ return newStr; - -+} - --/* DeleteWorker scans backwards through the tnode tree and deletes all the -- * chunks and tnodes in the file -- * Returns 1 if the tree was deleted. -- * Returns 0 if it stopped early due to hitting the limit and the delete is incomplete. -+/* -+ * Mknod (create) a new object. -+ * equiv_obj only has meaning for a hard link; -+ * aliasString only has meaning for a symlink. -+ * rdev only has meaning for devices (a subset of special objects) - */ - --static int yaffs_DeleteWorker(yaffs_Object *in, yaffs_Tnode *tn, __u32 level, -- int chunkOffset, int *limit) -+static yaffs_obj_t *yaffs_create_obj(yaffs_obj_type type, -+ yaffs_obj_t *parent, -+ const YCHAR *name, -+ __u32 mode, -+ __u32 uid, -+ __u32 gid, -+ yaffs_obj_t *equiv_obj, -+ const YCHAR *aliasString, __u32 rdev) - { -- int i; -- int chunkInInode; -- int theChunk; -- yaffs_ExtendedTags tags; -- int foundChunk; -- yaffs_Device *dev = in->myDev; -- -- int allDone = 1; -- -- if (tn) { -- if (level > 0) { -- for (i = YAFFS_NTNODES_INTERNAL - 1; allDone && i >= 0; -- i--) { -- if (tn->internal[i]) { -- if (limit && (*limit) < 0) { -- allDone = 0; -- } else { -- allDone = -- yaffs_DeleteWorker(in, -- tn-> -- internal -- [i], -- level - -- 1, -- (chunkOffset -- << -- YAFFS_TNODES_INTERNAL_BITS) -- + i, -- limit); -- } -- if (allDone) { -- yaffs_FreeTnode(dev, -- tn-> -- internal[i]); -- tn->internal[i] = NULL; -- } -- } -- } -- return (allDone) ? 1 : 0; -- } else if (level == 0) { -- int hitLimit = 0; -- -- for (i = YAFFS_NTNODES_LEVEL0 - 1; i >= 0 && !hitLimit; -- i--) { -- theChunk = yaffs_GetChunkGroupBase(dev, tn, i); -- if (theChunk) { -- -- chunkInInode = (chunkOffset << -- YAFFS_TNODES_LEVEL0_BITS) + i; -- -- foundChunk = -- yaffs_FindChunkInGroup(dev, -- theChunk, -- &tags, -- in->objectId, -- chunkInInode); -- -- if (foundChunk > 0) { -- yaffs_DeleteChunk(dev, -- foundChunk, 1, -- __LINE__); -- in->nDataChunks--; -- if (limit) { -- *limit = *limit - 1; -- if (*limit <= 0) -- hitLimit = 1; -- } -- -- } -- -- yaffs_PutLevel0Tnode(dev, tn, i, 0); -- } -- -- } -- return (i < 0) ? 1 : 0; -- -- } -- -- } -- -- return 1; -- --} -- --static void yaffs_SoftDeleteChunk(yaffs_Device *dev, int chunk) --{ -- yaffs_BlockInfo *theBlock; -- -- T(YAFFS_TRACE_DELETION, (TSTR("soft delete chunk %d" TENDSTR), chunk)); -- -- theBlock = yaffs_GetBlockInfo(dev, chunk / dev->nChunksPerBlock); -- if (theBlock) { -- theBlock->softDeletions++; -- dev->nFreeChunks++; -- } --} -- --/* SoftDeleteWorker scans backwards through the tnode tree and soft deletes all the chunks in the file. -- * All soft deleting does is increment the block's softdelete count and pulls the chunk out -- * of the tnode. -- * Thus, essentially this is the same as DeleteWorker except that the chunks are soft deleted. -- */ -- --static int yaffs_SoftDeleteWorker(yaffs_Object *in, yaffs_Tnode *tn, -- __u32 level, int chunkOffset) --{ -- int i; -- int theChunk; -- int allDone = 1; -- yaffs_Device *dev = in->myDev; -- -- if (tn) { -- if (level > 0) { -- -- for (i = YAFFS_NTNODES_INTERNAL - 1; allDone && i >= 0; -- i--) { -- if (tn->internal[i]) { -- allDone = -- yaffs_SoftDeleteWorker(in, -- tn-> -- internal[i], -- level - 1, -- (chunkOffset -- << -- YAFFS_TNODES_INTERNAL_BITS) -- + i); -- if (allDone) { -- yaffs_FreeTnode(dev, -- tn-> -- internal[i]); -- tn->internal[i] = NULL; -- } else { -- /* Hoosterman... how could this happen? */ -- } -- } -- } -- return (allDone) ? 1 : 0; -- } else if (level == 0) { -- -- for (i = YAFFS_NTNODES_LEVEL0 - 1; i >= 0; i--) { -- theChunk = yaffs_GetChunkGroupBase(dev, tn, i); -- if (theChunk) { -- /* Note this does not find the real chunk, only the chunk group. -- * We make an assumption that a chunk group is not larger than -- * a block. -- */ -- yaffs_SoftDeleteChunk(dev, theChunk); -- yaffs_PutLevel0Tnode(dev, tn, i, 0); -- } -- -- } -- return 1; -- -- } -- -- } -- -- return 1; -- --} -- --static void yaffs_SoftDeleteFile(yaffs_Object *obj) --{ -- if (obj->deleted && -- obj->variantType == YAFFS_OBJECT_TYPE_FILE && !obj->softDeleted) { -- if (obj->nDataChunks <= 0) { -- /* Empty file with no duplicate object headers, just delete it immediately */ -- yaffs_FreeTnode(obj->myDev, -- obj->variant.fileVariant.top); -- obj->variant.fileVariant.top = NULL; -- T(YAFFS_TRACE_TRACING, -- (TSTR("yaffs: Deleting empty file %d" TENDSTR), -- obj->objectId)); -- yaffs_DoGenericObjectDeletion(obj); -- } else { -- yaffs_SoftDeleteWorker(obj, -- obj->variant.fileVariant.top, -- obj->variant.fileVariant. -- topLevel, 0); -- obj->softDeleted = 1; -- } -- } --} -- --/* Pruning removes any part of the file structure tree that is beyond the -- * bounds of the file (ie that does not point to chunks). -- * -- * A file should only get pruned when its size is reduced. -- * -- * Before pruning, the chunks must be pulled from the tree and the -- * level 0 tnode entries must be zeroed out. -- * Could also use this for file deletion, but that's probably better handled -- * by a special case. -- */ -- --static yaffs_Tnode *yaffs_PruneWorker(yaffs_Device *dev, yaffs_Tnode *tn, -- __u32 level, int del0) --{ -- int i; -- int hasData; -- -- if (tn) { -- hasData = 0; -- -- for (i = 0; i < YAFFS_NTNODES_INTERNAL; i++) { -- if (tn->internal[i] && level > 0) { -- tn->internal[i] = -- yaffs_PruneWorker(dev, tn->internal[i], -- level - 1, -- (i == 0) ? del0 : 1); -- } -- -- if (tn->internal[i]) -- hasData++; -- } -- -- if (hasData == 0 && del0) { -- /* Free and return NULL */ -- -- yaffs_FreeTnode(dev, tn); -- tn = NULL; -- } -- -- } -- -- return tn; -- --} -- --static int yaffs_PruneFileStructure(yaffs_Device *dev, -- yaffs_FileStructure *fStruct) --{ -- int i; -- int hasData; -- int done = 0; -- yaffs_Tnode *tn; -- -- if (fStruct->topLevel > 0) { -- fStruct->top = -- yaffs_PruneWorker(dev, fStruct->top, fStruct->topLevel, 0); -- -- /* Now we have a tree with all the non-zero branches NULL but the height -- * is the same as it was. -- * Let's see if we can trim internal tnodes to shorten the tree. -- * We can do this if only the 0th element in the tnode is in use -- * (ie all the non-zero are NULL) -- */ -- -- while (fStruct->topLevel && !done) { -- tn = fStruct->top; -- -- hasData = 0; -- for (i = 1; i < YAFFS_NTNODES_INTERNAL; i++) { -- if (tn->internal[i]) -- hasData++; -- } -- -- if (!hasData) { -- fStruct->top = tn->internal[0]; -- fStruct->topLevel--; -- yaffs_FreeTnode(dev, tn); -- } else { -- done = 1; -- } -- } -- } -- -- return YAFFS_OK; --} -- --/*-------------------- End of File Structure functions.-------------------*/ -- --/* yaffs_CreateFreeObjects creates a bunch more objects and -- * adds them to the object free list. -- */ --static int yaffs_CreateFreeObjects(yaffs_Device *dev, int nObjects) --{ -- int i; -- yaffs_Object *newObjects; -- yaffs_ObjectList *list; -- -- if (nObjects < 1) -- return YAFFS_OK; -- -- /* make these things */ -- newObjects = YMALLOC(nObjects * sizeof(yaffs_Object)); -- list = YMALLOC(sizeof(yaffs_ObjectList)); -- -- if (!newObjects || !list) { -- if (newObjects) -- YFREE(newObjects); -- if (list) -- YFREE(list); -- T(YAFFS_TRACE_ALLOCATE, -- (TSTR("yaffs: Could not allocate more objects" TENDSTR))); -- return YAFFS_FAIL; -- } -- -- /* Hook them into the free list */ -- for (i = 0; i < nObjects - 1; i++) { -- newObjects[i].siblings.next = -- (struct ylist_head *)(&newObjects[i + 1]); -- } -- -- newObjects[nObjects - 1].siblings.next = (void *)dev->freeObjects; -- dev->freeObjects = newObjects; -- dev->nFreeObjects += nObjects; -- dev->nObjectsCreated += nObjects; -- -- /* Now add this bunch of Objects to a list for freeing up. */ -- -- list->objects = newObjects; -- list->next = dev->allocatedObjectList; -- dev->allocatedObjectList = list; -- -- return YAFFS_OK; --} -- -- --/* AllocateEmptyObject gets us a clean Object. Tries to make allocate more if we run out */ --static yaffs_Object *yaffs_AllocateEmptyObject(yaffs_Device *dev) --{ -- yaffs_Object *tn = NULL; -- --#ifdef VALGRIND_TEST -- tn = YMALLOC(sizeof(yaffs_Object)); --#else -- /* If there are none left make more */ -- if (!dev->freeObjects) -- yaffs_CreateFreeObjects(dev, YAFFS_ALLOCATION_NOBJECTS); -- -- if (dev->freeObjects) { -- tn = dev->freeObjects; -- dev->freeObjects = -- (yaffs_Object *) (dev->freeObjects->siblings.next); -- dev->nFreeObjects--; -- } --#endif -- if (tn) { -- /* Now sweeten it up... */ -- -- memset(tn, 0, sizeof(yaffs_Object)); -- tn->beingCreated = 1; -- -- tn->myDev = dev; -- tn->hdrChunk = 0; -- tn->variantType = YAFFS_OBJECT_TYPE_UNKNOWN; -- YINIT_LIST_HEAD(&(tn->hardLinks)); -- YINIT_LIST_HEAD(&(tn->hashLink)); -- YINIT_LIST_HEAD(&tn->siblings); -- -- -- /* Now make the directory sane */ -- if (dev->rootDir) { -- tn->parent = dev->rootDir; -- ylist_add(&(tn->siblings), &dev->rootDir->variant.directoryVariant.children); -- } -- -- /* Add it to the lost and found directory. -- * NB Can't put root or lostNFound in lostNFound so -- * check if lostNFound exists first -- */ -- if (dev->lostNFoundDir) -- yaffs_AddObjectToDirectory(dev->lostNFoundDir, tn); -- -- tn->beingCreated = 0; -- } -- -- dev->nCheckpointBlocksRequired = 0; /* force recalculation*/ -- -- return tn; --} -- --static yaffs_Object *yaffs_CreateFakeDirectory(yaffs_Device *dev, int number, -- __u32 mode) --{ -- -- yaffs_Object *obj = -- yaffs_CreateNewObject(dev, number, YAFFS_OBJECT_TYPE_DIRECTORY); -- if (obj) { -- obj->fake = 1; /* it is fake so it might have no NAND presence... */ -- obj->renameAllowed = 0; /* ... and we're not allowed to rename it... */ -- obj->unlinkAllowed = 0; /* ... or unlink it */ -- obj->deleted = 0; -- obj->unlinked = 0; -- obj->yst_mode = mode; -- obj->myDev = dev; -- obj->hdrChunk = 0; /* Not a valid chunk. */ -- } -- -- return obj; -- --} -- --static void yaffs_UnhashObject(yaffs_Object *tn) --{ -- int bucket; -- yaffs_Device *dev = tn->myDev; -- -- /* If it is still linked into the bucket list, free from the list */ -- if (!ylist_empty(&tn->hashLink)) { -- ylist_del_init(&tn->hashLink); -- bucket = yaffs_HashFunction(tn->objectId); -- dev->objectBucket[bucket].count--; -- } --} -- --/* FreeObject frees up a Object and puts it back on the free list */ --static void yaffs_FreeObject(yaffs_Object *tn) --{ -- yaffs_Device *dev = tn->myDev; -- --#ifdef __KERNEL__ -- T(YAFFS_TRACE_OS, (TSTR("FreeObject %p inode %p"TENDSTR), tn, tn->myInode)); --#endif -- -- if (tn->parent) -- YBUG(); -- if (!ylist_empty(&tn->siblings)) -- YBUG(); -- -- --#ifdef __KERNEL__ -- if (tn->myInode) { -- /* We're still hooked up to a cached inode. -- * Don't delete now, but mark for later deletion -- */ -- tn->deferedFree = 1; -- return; -- } --#endif -- -- yaffs_UnhashObject(tn); -- --#ifdef VALGRIND_TEST -- YFREE(tn); --#else -- /* Link into the free list. */ -- tn->siblings.next = (struct ylist_head *)(dev->freeObjects); -- dev->freeObjects = tn; -- dev->nFreeObjects++; --#endif -- dev->nCheckpointBlocksRequired = 0; /* force recalculation*/ --} -- --#ifdef __KERNEL__ -- --void yaffs_HandleDeferedFree(yaffs_Object *obj) --{ -- if (obj->deferedFree) -- yaffs_FreeObject(obj); --} -- --#endif -- --static void yaffs_DeinitialiseObjects(yaffs_Device *dev) --{ -- /* Free the list of allocated Objects */ -- -- yaffs_ObjectList *tmp; -- -- while (dev->allocatedObjectList) { -- tmp = dev->allocatedObjectList->next; -- YFREE(dev->allocatedObjectList->objects); -- YFREE(dev->allocatedObjectList); -- -- dev->allocatedObjectList = tmp; -- } -- -- dev->freeObjects = NULL; -- dev->nFreeObjects = 0; --} -- --static void yaffs_InitialiseObjects(yaffs_Device *dev) --{ -- int i; -- -- dev->allocatedObjectList = NULL; -- dev->freeObjects = NULL; -- dev->nFreeObjects = 0; -- -- for (i = 0; i < YAFFS_NOBJECT_BUCKETS; i++) { -- YINIT_LIST_HEAD(&dev->objectBucket[i].list); -- dev->objectBucket[i].count = 0; -- } --} -- --static int yaffs_FindNiceObjectBucket(yaffs_Device *dev) --{ -- static int x; -- int i; -- int l = 999; -- int lowest = 999999; -- -- /* First let's see if we can find one that's empty. */ -- -- for (i = 0; i < 10 && lowest > 0; i++) { -- x++; -- x %= YAFFS_NOBJECT_BUCKETS; -- if (dev->objectBucket[x].count < lowest) { -- lowest = dev->objectBucket[x].count; -- l = x; -- } -- -- } -- -- /* If we didn't find an empty list, then try -- * looking a bit further for a short one -- */ -- -- for (i = 0; i < 10 && lowest > 3; i++) { -- x++; -- x %= YAFFS_NOBJECT_BUCKETS; -- if (dev->objectBucket[x].count < lowest) { -- lowest = dev->objectBucket[x].count; -- l = x; -- } -- -- } -- -- return l; --} -- --static int yaffs_CreateNewObjectNumber(yaffs_Device *dev) --{ -- int bucket = yaffs_FindNiceObjectBucket(dev); -- -- /* Now find an object value that has not already been taken -- * by scanning the list. -- */ -- -- int found = 0; -- struct ylist_head *i; -- -- __u32 n = (__u32) bucket; -- -- /* yaffs_CheckObjectHashSanity(); */ -- -- while (!found) { -- found = 1; -- n += YAFFS_NOBJECT_BUCKETS; -- if (1 || dev->objectBucket[bucket].count > 0) { -- ylist_for_each(i, &dev->objectBucket[bucket].list) { -- /* If there is already one in the list */ -- if (i && ylist_entry(i, yaffs_Object, -- hashLink)->objectId == n) { -- found = 0; -- } -- } -- } -- } -- -- return n; --} -- --static void yaffs_HashObject(yaffs_Object *in) --{ -- int bucket = yaffs_HashFunction(in->objectId); -- yaffs_Device *dev = in->myDev; -- -- ylist_add(&in->hashLink, &dev->objectBucket[bucket].list); -- dev->objectBucket[bucket].count++; --} -- --yaffs_Object *yaffs_FindObjectByNumber(yaffs_Device *dev, __u32 number) --{ -- int bucket = yaffs_HashFunction(number); -- struct ylist_head *i; -- yaffs_Object *in; -- -- ylist_for_each(i, &dev->objectBucket[bucket].list) { -- /* Look if it is in the list */ -- if (i) { -- in = ylist_entry(i, yaffs_Object, hashLink); -- if (in->objectId == number) { --#ifdef __KERNEL__ -- /* Don't tell the VFS about this one if it is defered free */ -- if (in->deferedFree) -- return NULL; --#endif -- -- return in; -- } -- } -- } -- -- return NULL; --} -- --yaffs_Object *yaffs_CreateNewObject(yaffs_Device *dev, int number, -- yaffs_ObjectType type) --{ -- yaffs_Object *theObject; -- yaffs_Tnode *tn = NULL; -- -- if (number < 0) -- number = yaffs_CreateNewObjectNumber(dev); -- -- theObject = yaffs_AllocateEmptyObject(dev); -- if (!theObject) -- return NULL; -- -- if (type == YAFFS_OBJECT_TYPE_FILE) { -- tn = yaffs_GetTnode(dev); -- if (!tn) { -- yaffs_FreeObject(theObject); -- return NULL; -- } -- } -- -- if (theObject) { -- theObject->fake = 0; -- theObject->renameAllowed = 1; -- theObject->unlinkAllowed = 1; -- theObject->objectId = number; -- yaffs_HashObject(theObject); -- theObject->variantType = type; --#ifdef CONFIG_YAFFS_WINCE -- yfsd_WinFileTimeNow(theObject->win_atime); -- theObject->win_ctime[0] = theObject->win_mtime[0] = -- theObject->win_atime[0]; -- theObject->win_ctime[1] = theObject->win_mtime[1] = -- theObject->win_atime[1]; -- --#else -- -- theObject->yst_atime = theObject->yst_mtime = -- theObject->yst_ctime = Y_CURRENT_TIME; --#endif -- switch (type) { -- case YAFFS_OBJECT_TYPE_FILE: -- theObject->variant.fileVariant.fileSize = 0; -- theObject->variant.fileVariant.scannedFileSize = 0; -- theObject->variant.fileVariant.shrinkSize = 0xFFFFFFFF; /* max __u32 */ -- theObject->variant.fileVariant.topLevel = 0; -- theObject->variant.fileVariant.top = tn; -- break; -- case YAFFS_OBJECT_TYPE_DIRECTORY: -- YINIT_LIST_HEAD(&theObject->variant.directoryVariant. -- children); -- break; -- case YAFFS_OBJECT_TYPE_SYMLINK: -- case YAFFS_OBJECT_TYPE_HARDLINK: -- case YAFFS_OBJECT_TYPE_SPECIAL: -- /* No action required */ -- break; -- case YAFFS_OBJECT_TYPE_UNKNOWN: -- /* todo this should not happen */ -- break; -- } -- } -- -- return theObject; --} -- --static yaffs_Object *yaffs_FindOrCreateObjectByNumber(yaffs_Device *dev, -- int number, -- yaffs_ObjectType type) --{ -- yaffs_Object *theObject = NULL; -- -- if (number > 0) -- theObject = yaffs_FindObjectByNumber(dev, number); -- -- if (!theObject) -- theObject = yaffs_CreateNewObject(dev, number, type); -- -- return theObject; -- --} -- -- --static YCHAR *yaffs_CloneString(const YCHAR *str) --{ -- YCHAR *newStr = NULL; -- -- if (str && *str) { -- newStr = YMALLOC((yaffs_strlen(str) + 1) * sizeof(YCHAR)); -- if (newStr) -- yaffs_strcpy(newStr, str); -- } -- -- return newStr; -- --} -- --/* -- * Mknod (create) a new object. -- * equivalentObject only has meaning for a hard link; -- * aliasString only has meaning for a sumlink. -- * rdev only has meaning for devices (a subset of special objects) -- */ -- --static yaffs_Object *yaffs_MknodObject(yaffs_ObjectType type, -- yaffs_Object *parent, -- const YCHAR *name, -- __u32 mode, -- __u32 uid, -- __u32 gid, -- yaffs_Object *equivalentObject, -- const YCHAR *aliasString, __u32 rdev) --{ -- yaffs_Object *in; -- YCHAR *str = NULL; -- -- yaffs_Device *dev = parent->myDev; -- -- /* Check if the entry exists. If it does then fail the call since we don't want a dup.*/ -- if (yaffs_FindObjectByName(parent, name)) -- return NULL; -- -- in = yaffs_CreateNewObject(dev, -1, type); -- -- if (!in) -- return YAFFS_FAIL; -- -- if (type == YAFFS_OBJECT_TYPE_SYMLINK) { -- str = yaffs_CloneString(aliasString); -- if (!str) { -- yaffs_FreeObject(in); -- return NULL; -- } -- } -- -- -- -- if (in) { -- in->hdrChunk = 0; -- in->valid = 1; -- in->variantType = type; -- -- in->yst_mode = mode; -- --#ifdef CONFIG_YAFFS_WINCE -- yfsd_WinFileTimeNow(in->win_atime); -- in->win_ctime[0] = in->win_mtime[0] = in->win_atime[0]; -- in->win_ctime[1] = in->win_mtime[1] = in->win_atime[1]; -- --#else -- in->yst_atime = in->yst_mtime = in->yst_ctime = Y_CURRENT_TIME; -- -- in->yst_rdev = rdev; -- in->yst_uid = uid; -- in->yst_gid = gid; --#endif -- in->nDataChunks = 0; -- -- yaffs_SetObjectName(in, name); -- in->dirty = 1; -- -- yaffs_AddObjectToDirectory(parent, in); -- -- in->myDev = parent->myDev; -- -- switch (type) { -- case YAFFS_OBJECT_TYPE_SYMLINK: -- in->variant.symLinkVariant.alias = str; -- break; -- case YAFFS_OBJECT_TYPE_HARDLINK: -- in->variant.hardLinkVariant.equivalentObject = -- equivalentObject; -- in->variant.hardLinkVariant.equivalentObjectId = -- equivalentObject->objectId; -- ylist_add(&in->hardLinks, &equivalentObject->hardLinks); -- break; -- case YAFFS_OBJECT_TYPE_FILE: -- case YAFFS_OBJECT_TYPE_DIRECTORY: -- case YAFFS_OBJECT_TYPE_SPECIAL: -- case YAFFS_OBJECT_TYPE_UNKNOWN: -- /* do nothing */ -- break; -- } -- -- if (yaffs_UpdateObjectHeader(in, name, 0, 0, 0) < 0) { -- /* Could not create the object header, fail the creation */ -- yaffs_DeleteObject(in); -- in = NULL; -- } -- -- } -- -- return in; --} -- --yaffs_Object *yaffs_MknodFile(yaffs_Object *parent, const YCHAR *name, -- __u32 mode, __u32 uid, __u32 gid) --{ -- return yaffs_MknodObject(YAFFS_OBJECT_TYPE_FILE, parent, name, mode, -- uid, gid, NULL, NULL, 0); --} -- --yaffs_Object *yaffs_MknodDirectory(yaffs_Object *parent, const YCHAR *name, -- __u32 mode, __u32 uid, __u32 gid) --{ -- return yaffs_MknodObject(YAFFS_OBJECT_TYPE_DIRECTORY, parent, name, -- mode, uid, gid, NULL, NULL, 0); --} -- --yaffs_Object *yaffs_MknodSpecial(yaffs_Object *parent, const YCHAR *name, -- __u32 mode, __u32 uid, __u32 gid, __u32 rdev) --{ -- return yaffs_MknodObject(YAFFS_OBJECT_TYPE_SPECIAL, parent, name, mode, -- uid, gid, NULL, NULL, rdev); --} -- --yaffs_Object *yaffs_MknodSymLink(yaffs_Object *parent, const YCHAR *name, -- __u32 mode, __u32 uid, __u32 gid, -- const YCHAR *alias) --{ -- return yaffs_MknodObject(YAFFS_OBJECT_TYPE_SYMLINK, parent, name, mode, -- uid, gid, NULL, alias, 0); --} -- --/* yaffs_Link returns the object id of the equivalent object.*/ --yaffs_Object *yaffs_Link(yaffs_Object *parent, const YCHAR *name, -- yaffs_Object *equivalentObject) --{ -- /* Get the real object in case we were fed a hard link as an equivalent object */ -- equivalentObject = yaffs_GetEquivalentObject(equivalentObject); -- -- if (yaffs_MknodObject -- (YAFFS_OBJECT_TYPE_HARDLINK, parent, name, 0, 0, 0, -- equivalentObject, NULL, 0)) { -- return equivalentObject; -- } else { -- return NULL; -- } -- --} -- --static int yaffs_ChangeObjectName(yaffs_Object *obj, yaffs_Object *newDir, -- const YCHAR *newName, int force, int shadows) --{ -- int unlinkOp; -- int deleteOp; -- -- yaffs_Object *existingTarget; -- -- if (newDir == NULL) -- newDir = obj->parent; /* use the old directory */ -- -- if (newDir->variantType != YAFFS_OBJECT_TYPE_DIRECTORY) { -- T(YAFFS_TRACE_ALWAYS, -- (TSTR -- ("tragedy: yaffs_ChangeObjectName: newDir is not a directory" -- TENDSTR))); -- YBUG(); -- } -- -- /* TODO: Do we need this different handling for YAFFS2 and YAFFS1?? */ -- if (obj->myDev->isYaffs2) -- unlinkOp = (newDir == obj->myDev->unlinkedDir); -- else -- unlinkOp = (newDir == obj->myDev->unlinkedDir -- && obj->variantType == YAFFS_OBJECT_TYPE_FILE); -- -- deleteOp = (newDir == obj->myDev->deletedDir); -- -- existingTarget = yaffs_FindObjectByName(newDir, newName); -- -- /* If the object is a file going into the unlinked directory, -- * then it is OK to just stuff it in since duplicate names are allowed. -- * else only proceed if the new name does not exist and if we're putting -- * it into a directory. -- */ -- if ((unlinkOp || -- deleteOp || -- force || -- (shadows > 0) || -- !existingTarget) && -- newDir->variantType == YAFFS_OBJECT_TYPE_DIRECTORY) { -- yaffs_SetObjectName(obj, newName); -- obj->dirty = 1; -- -- yaffs_AddObjectToDirectory(newDir, obj); -- -- if (unlinkOp) -- obj->unlinked = 1; -- -- /* If it is a deletion then we mark it as a shrink for gc purposes. */ -- if (yaffs_UpdateObjectHeader(obj, newName, 0, deleteOp, shadows) >= 0) -- return YAFFS_OK; -- } -- -- return YAFFS_FAIL; --} -- --int yaffs_RenameObject(yaffs_Object *oldDir, const YCHAR *oldName, -- yaffs_Object *newDir, const YCHAR *newName) --{ -- yaffs_Object *obj = NULL; -- yaffs_Object *existingTarget = NULL; -- int force = 0; -- -- -- if (!oldDir || oldDir->variantType != YAFFS_OBJECT_TYPE_DIRECTORY) -- YBUG(); -- if (!newDir || newDir->variantType != YAFFS_OBJECT_TYPE_DIRECTORY) -- YBUG(); -- --#ifdef CONFIG_YAFFS_CASE_INSENSITIVE -- /* Special case for case insemsitive systems (eg. WinCE). -- * While look-up is case insensitive, the name isn't. -- * Therefore we might want to change x.txt to X.txt -- */ -- if (oldDir == newDir && yaffs_strcmp(oldName, newName) == 0) -- force = 1; --#endif -- -- else if (yaffs_strlen(newName) > YAFFS_MAX_NAME_LENGTH) -- /* ENAMETOOLONG */ -- return YAFFS_FAIL; -- -- obj = yaffs_FindObjectByName(oldDir, oldName); -- -- if (obj && obj->renameAllowed) { -- -- /* Now do the handling for an existing target, if there is one */ -- -- existingTarget = yaffs_FindObjectByName(newDir, newName); -- if (existingTarget && -- existingTarget->variantType == YAFFS_OBJECT_TYPE_DIRECTORY && -- !ylist_empty(&existingTarget->variant.directoryVariant.children)) { -- /* There is a target that is a non-empty directory, so we fail */ -- return YAFFS_FAIL; /* EEXIST or ENOTEMPTY */ -- } else if (existingTarget && existingTarget != obj) { -- /* Nuke the target first, using shadowing, -- * but only if it isn't the same object -- */ -- yaffs_ChangeObjectName(obj, newDir, newName, force, -- existingTarget->objectId); -- yaffs_UnlinkObject(existingTarget); -- } -- -- return yaffs_ChangeObjectName(obj, newDir, newName, 1, 0); -- } -- return YAFFS_FAIL; --} -- --/*------------------------- Block Management and Page Allocation ----------------*/ -- --static int yaffs_InitialiseBlocks(yaffs_Device *dev) --{ -- int nBlocks = dev->internalEndBlock - dev->internalStartBlock + 1; -- -- dev->blockInfo = NULL; -- dev->chunkBits = NULL; -- -- dev->allocationBlock = -1; /* force it to get a new one */ -- -- /* If the first allocation strategy fails, thry the alternate one */ -- dev->blockInfo = YMALLOC(nBlocks * sizeof(yaffs_BlockInfo)); -- if (!dev->blockInfo) { -- dev->blockInfo = YMALLOC_ALT(nBlocks * sizeof(yaffs_BlockInfo)); -- dev->blockInfoAlt = 1; -- } else -- dev->blockInfoAlt = 0; -- -- if (dev->blockInfo) { -- /* Set up dynamic blockinfo stuff. */ -- dev->chunkBitmapStride = (dev->nChunksPerBlock + 7) / 8; /* round up bytes */ -- dev->chunkBits = YMALLOC(dev->chunkBitmapStride * nBlocks); -- if (!dev->chunkBits) { -- dev->chunkBits = YMALLOC_ALT(dev->chunkBitmapStride * nBlocks); -- dev->chunkBitsAlt = 1; -- } else -- dev->chunkBitsAlt = 0; -- } -- -- if (dev->blockInfo && dev->chunkBits) { -- memset(dev->blockInfo, 0, nBlocks * sizeof(yaffs_BlockInfo)); -- memset(dev->chunkBits, 0, dev->chunkBitmapStride * nBlocks); -- return YAFFS_OK; -- } -- -- return YAFFS_FAIL; --} -- --static void yaffs_DeinitialiseBlocks(yaffs_Device *dev) --{ -- if (dev->blockInfoAlt && dev->blockInfo) -- YFREE_ALT(dev->blockInfo); -- else if (dev->blockInfo) -- YFREE(dev->blockInfo); -- -- dev->blockInfoAlt = 0; -- -- dev->blockInfo = NULL; -- -- if (dev->chunkBitsAlt && dev->chunkBits) -- YFREE_ALT(dev->chunkBits); -- else if (dev->chunkBits) -- YFREE(dev->chunkBits); -- dev->chunkBitsAlt = 0; -- dev->chunkBits = NULL; --} -- --static int yaffs_BlockNotDisqualifiedFromGC(yaffs_Device *dev, -- yaffs_BlockInfo *bi) --{ -- int i; -- __u32 seq; -- yaffs_BlockInfo *b; -- -- if (!dev->isYaffs2) -- return 1; /* disqualification only applies to yaffs2. */ -- -- if (!bi->hasShrinkHeader) -- return 1; /* can gc */ -- -- /* Find the oldest dirty sequence number if we don't know it and save it -- * so we don't have to keep recomputing it. -- */ -- if (!dev->oldestDirtySequence) { -- seq = dev->sequenceNumber; -- -- for (i = dev->internalStartBlock; i <= dev->internalEndBlock; -- i++) { -- b = yaffs_GetBlockInfo(dev, i); -- if (b->blockState == YAFFS_BLOCK_STATE_FULL && -- (b->pagesInUse - b->softDeletions) < -- dev->nChunksPerBlock && b->sequenceNumber < seq) { -- seq = b->sequenceNumber; -- } -- } -- dev->oldestDirtySequence = seq; -- } -- -- /* Can't do gc of this block if there are any blocks older than this one that have -- * discarded pages. -- */ -- return (bi->sequenceNumber <= dev->oldestDirtySequence); --} -- --/* FindDiretiestBlock is used to select the dirtiest block (or close enough) -- * for garbage collection. -- */ -- --static int yaffs_FindBlockForGarbageCollection(yaffs_Device *dev, -- int aggressive) --{ -- int b = dev->currentDirtyChecker; -- -- int i; -- int iterations; -- int dirtiest = -1; -- int pagesInUse = 0; -- int prioritised = 0; -- yaffs_BlockInfo *bi; -- int pendingPrioritisedExist = 0; -- -- /* First let's see if we need to grab a prioritised block */ -- if (dev->hasPendingPrioritisedGCs) { -- for (i = dev->internalStartBlock; i < dev->internalEndBlock && !prioritised; i++) { -- -- bi = yaffs_GetBlockInfo(dev, i); -- /* yaffs_VerifyBlock(dev,bi,i); */ -- -- if (bi->gcPrioritise) { -- pendingPrioritisedExist = 1; -- if (bi->blockState == YAFFS_BLOCK_STATE_FULL && -- yaffs_BlockNotDisqualifiedFromGC(dev, bi)) { -- pagesInUse = (bi->pagesInUse - bi->softDeletions); -- dirtiest = i; -- prioritised = 1; -- aggressive = 1; /* Fool the non-aggressive skip logiv below */ -- } -- } -- } -- -- if (!pendingPrioritisedExist) /* None found, so we can clear this */ -- dev->hasPendingPrioritisedGCs = 0; -- } -- -- /* If we're doing aggressive GC then we are happy to take a less-dirty block, and -- * search harder. -- * else (we're doing a leasurely gc), then we only bother to do this if the -- * block has only a few pages in use. -- */ -- -- dev->nonAggressiveSkip--; -- -- if (!aggressive && (dev->nonAggressiveSkip > 0)) -- return -1; -- -- if (!prioritised) -- pagesInUse = -- (aggressive) ? dev->nChunksPerBlock : YAFFS_PASSIVE_GC_CHUNKS + 1; -- -- if (aggressive) -- iterations = -- dev->internalEndBlock - dev->internalStartBlock + 1; -- else { -- iterations = -- dev->internalEndBlock - dev->internalStartBlock + 1; -- iterations = iterations / 16; -- if (iterations > 200) -- iterations = 200; -- } -- -- for (i = 0; i <= iterations && pagesInUse > 0 && !prioritised; i++) { -- b++; -- if (b < dev->internalStartBlock || b > dev->internalEndBlock) -- b = dev->internalStartBlock; -- -- if (b < dev->internalStartBlock || b > dev->internalEndBlock) { -- T(YAFFS_TRACE_ERROR, -- (TSTR("**>> Block %d is not valid" TENDSTR), b)); -- YBUG(); -- } -- -- bi = yaffs_GetBlockInfo(dev, b); -- -- if (bi->blockState == YAFFS_BLOCK_STATE_FULL && -- (bi->pagesInUse - bi->softDeletions) < pagesInUse && -- yaffs_BlockNotDisqualifiedFromGC(dev, bi)) { -- dirtiest = b; -- pagesInUse = (bi->pagesInUse - bi->softDeletions); -- } -- } -- -- dev->currentDirtyChecker = b; -- -- if (dirtiest > 0) { -- T(YAFFS_TRACE_GC, -- (TSTR("GC Selected block %d with %d free, prioritised:%d" TENDSTR), dirtiest, -- dev->nChunksPerBlock - pagesInUse, prioritised)); -- } -- -- dev->oldestDirtySequence = 0; -- -- if (dirtiest > 0) -- dev->nonAggressiveSkip = 4; -- -- return dirtiest; --} -- --static void yaffs_BlockBecameDirty(yaffs_Device *dev, int blockNo) --{ -- yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, blockNo); -- -- int erasedOk = 0; -- -- /* If the block is still healthy erase it and mark as clean. -- * If the block has had a data failure, then retire it. -- */ -- -- T(YAFFS_TRACE_GC | YAFFS_TRACE_ERASE, -- (TSTR("yaffs_BlockBecameDirty block %d state %d %s"TENDSTR), -- blockNo, bi->blockState, (bi->needsRetiring) ? "needs retiring" : "")); -- -- bi->blockState = YAFFS_BLOCK_STATE_DIRTY; -- -- if (!bi->needsRetiring) { -- yaffs_InvalidateCheckpoint(dev); -- erasedOk = yaffs_EraseBlockInNAND(dev, blockNo); -- if (!erasedOk) { -- dev->nErasureFailures++; -- T(YAFFS_TRACE_ERROR | YAFFS_TRACE_BAD_BLOCKS, -- (TSTR("**>> Erasure failed %d" TENDSTR), blockNo)); -- } -- } -- -- if (erasedOk && -- ((yaffs_traceMask & YAFFS_TRACE_ERASE) || !yaffs_SkipVerification(dev))) { -- int i; -- for (i = 0; i < dev->nChunksPerBlock; i++) { -- if (!yaffs_CheckChunkErased -- (dev, blockNo * dev->nChunksPerBlock + i)) { -- T(YAFFS_TRACE_ERROR, -- (TSTR -- (">>Block %d erasure supposedly OK, but chunk %d not erased" -- TENDSTR), blockNo, i)); -- } -- } -- } -- -- if (erasedOk) { -- /* Clean it up... */ -- bi->blockState = YAFFS_BLOCK_STATE_EMPTY; -- dev->nErasedBlocks++; -- bi->pagesInUse = 0; -- bi->softDeletions = 0; -- bi->hasShrinkHeader = 0; -- bi->skipErasedCheck = 1; /* This is clean, so no need to check */ -- bi->gcPrioritise = 0; -- yaffs_ClearChunkBits(dev, blockNo); -- -- T(YAFFS_TRACE_ERASE, -- (TSTR("Erased block %d" TENDSTR), blockNo)); -- } else { -- dev->nFreeChunks -= dev->nChunksPerBlock; /* We lost a block of free space */ -- -- yaffs_RetireBlock(dev, blockNo); -- T(YAFFS_TRACE_ERROR | YAFFS_TRACE_BAD_BLOCKS, -- (TSTR("**>> Block %d retired" TENDSTR), blockNo)); -- } --} -- --static int yaffs_FindBlockForAllocation(yaffs_Device *dev) --{ -- int i; -- -- yaffs_BlockInfo *bi; -- -- if (dev->nErasedBlocks < 1) { -- /* Hoosterman we've got a problem. -- * Can't get space to gc -- */ -- T(YAFFS_TRACE_ERROR, -- (TSTR("yaffs tragedy: no more erased blocks" TENDSTR))); -- -- return -1; -- } -- -- /* Find an empty block. */ -- -- for (i = dev->internalStartBlock; i <= dev->internalEndBlock; i++) { -- dev->allocationBlockFinder++; -- if (dev->allocationBlockFinder < dev->internalStartBlock -- || dev->allocationBlockFinder > dev->internalEndBlock) { -- dev->allocationBlockFinder = dev->internalStartBlock; -- } -- -- bi = yaffs_GetBlockInfo(dev, dev->allocationBlockFinder); -- -- if (bi->blockState == YAFFS_BLOCK_STATE_EMPTY) { -- bi->blockState = YAFFS_BLOCK_STATE_ALLOCATING; -- dev->sequenceNumber++; -- bi->sequenceNumber = dev->sequenceNumber; -- dev->nErasedBlocks--; -- T(YAFFS_TRACE_ALLOCATE, -- (TSTR("Allocated block %d, seq %d, %d left" TENDSTR), -- dev->allocationBlockFinder, dev->sequenceNumber, -- dev->nErasedBlocks)); -- return dev->allocationBlockFinder; -- } -- } -- -- T(YAFFS_TRACE_ALWAYS, -- (TSTR -- ("yaffs tragedy: no more erased blocks, but there should have been %d" -- TENDSTR), dev->nErasedBlocks)); -- -- return -1; --} -- -- -- --static int yaffs_CalcCheckpointBlocksRequired(yaffs_Device *dev) --{ -- if (!dev->nCheckpointBlocksRequired && -- dev->isYaffs2) { -- /* Not a valid value so recalculate */ -- int nBytes = 0; -- int nBlocks; -- int devBlocks = (dev->endBlock - dev->startBlock + 1); -- int tnodeSize; -- -- tnodeSize = (dev->tnodeWidth * YAFFS_NTNODES_LEVEL0)/8; -- -- if (tnodeSize < sizeof(yaffs_Tnode)) -- tnodeSize = sizeof(yaffs_Tnode); -- -- nBytes += sizeof(yaffs_CheckpointValidity); -- nBytes += sizeof(yaffs_CheckpointDevice); -- nBytes += devBlocks * sizeof(yaffs_BlockInfo); -- nBytes += devBlocks * dev->chunkBitmapStride; -- nBytes += (sizeof(yaffs_CheckpointObject) + sizeof(__u32)) * (dev->nObjectsCreated - dev->nFreeObjects); -- nBytes += (tnodeSize + sizeof(__u32)) * (dev->nTnodesCreated - dev->nFreeTnodes); -- nBytes += sizeof(yaffs_CheckpointValidity); -- nBytes += sizeof(__u32); /* checksum*/ -- -- /* Round up and add 2 blocks to allow for some bad blocks, so add 3 */ -- -- nBlocks = (nBytes/(dev->nDataBytesPerChunk * dev->nChunksPerBlock)) + 3; -- -- dev->nCheckpointBlocksRequired = nBlocks; -- } -- -- return dev->nCheckpointBlocksRequired; --} -- --/* -- * Check if there's space to allocate... -- * Thinks.... do we need top make this ths same as yaffs_GetFreeChunks()? -- */ --static int yaffs_CheckSpaceForAllocation(yaffs_Device *dev) --{ -- int reservedChunks; -- int reservedBlocks = dev->nReservedBlocks; -- int checkpointBlocks; -- -- if (dev->isYaffs2) { -- checkpointBlocks = yaffs_CalcCheckpointBlocksRequired(dev) - -- dev->blocksInCheckpoint; -- if (checkpointBlocks < 0) -- checkpointBlocks = 0; -- } else { -- checkpointBlocks = 0; -- } -- -- reservedChunks = ((reservedBlocks + checkpointBlocks) * dev->nChunksPerBlock); -- -- return (dev->nFreeChunks > reservedChunks); --} -- --static int yaffs_AllocateChunk(yaffs_Device *dev, int useReserve, -- yaffs_BlockInfo **blockUsedPtr) --{ -- int retVal; -- yaffs_BlockInfo *bi; -- -- if (dev->allocationBlock < 0) { -- /* Get next block to allocate off */ -- dev->allocationBlock = yaffs_FindBlockForAllocation(dev); -- dev->allocationPage = 0; -- } -- -- if (!useReserve && !yaffs_CheckSpaceForAllocation(dev)) { -- /* Not enough space to allocate unless we're allowed to use the reserve. */ -- return -1; -- } -- -- if (dev->nErasedBlocks < dev->nReservedBlocks -- && dev->allocationPage == 0) { -- T(YAFFS_TRACE_ALLOCATE, (TSTR("Allocating reserve" TENDSTR))); -- } -- -- /* Next page please.... */ -- if (dev->allocationBlock >= 0) { -- bi = yaffs_GetBlockInfo(dev, dev->allocationBlock); -- -- retVal = (dev->allocationBlock * dev->nChunksPerBlock) + -- dev->allocationPage; -- bi->pagesInUse++; -- yaffs_SetChunkBit(dev, dev->allocationBlock, -- dev->allocationPage); -- -- dev->allocationPage++; -- -- dev->nFreeChunks--; -- -- /* If the block is full set the state to full */ -- if (dev->allocationPage >= dev->nChunksPerBlock) { -- bi->blockState = YAFFS_BLOCK_STATE_FULL; -- dev->allocationBlock = -1; -- } -- -- if (blockUsedPtr) -- *blockUsedPtr = bi; -- -- return retVal; -- } -- -- T(YAFFS_TRACE_ERROR, -- (TSTR("!!!!!!!!! Allocator out !!!!!!!!!!!!!!!!!" TENDSTR))); -- -- return -1; --} -- --static int yaffs_GetErasedChunks(yaffs_Device *dev) --{ -- int n; -- -- n = dev->nErasedBlocks * dev->nChunksPerBlock; -- -- if (dev->allocationBlock > 0) -- n += (dev->nChunksPerBlock - dev->allocationPage); -- -- return n; -- --} -- --static int yaffs_GarbageCollectBlock(yaffs_Device *dev, int block, -- int wholeBlock) --{ -- int oldChunk; -- int newChunk; -- int markNAND; -- int retVal = YAFFS_OK; -- int cleanups = 0; -- int i; -- int isCheckpointBlock; -- int matchingChunk; -- int maxCopies; -- -- int chunksBefore = yaffs_GetErasedChunks(dev); -- int chunksAfter; -- -- yaffs_ExtendedTags tags; -- -- yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, block); -- -- yaffs_Object *object; -- -- isCheckpointBlock = (bi->blockState == YAFFS_BLOCK_STATE_CHECKPOINT); -- -- bi->blockState = YAFFS_BLOCK_STATE_COLLECTING; -- -- T(YAFFS_TRACE_TRACING, -- (TSTR("Collecting block %d, in use %d, shrink %d, wholeBlock %d" TENDSTR), -- block, -- bi->pagesInUse, -- bi->hasShrinkHeader, -- wholeBlock)); -- -- /*yaffs_VerifyFreeChunks(dev); */ -- -- bi->hasShrinkHeader = 0; /* clear the flag so that the block can erase */ -- -- /* Take off the number of soft deleted entries because -- * they're going to get really deleted during GC. -- */ -- dev->nFreeChunks -= bi->softDeletions; -- -- dev->isDoingGC = 1; -- -- if (isCheckpointBlock || -- !yaffs_StillSomeChunkBits(dev, block)) { -- T(YAFFS_TRACE_TRACING, -- (TSTR -- ("Collecting block %d that has no chunks in use" TENDSTR), -- block)); -- yaffs_BlockBecameDirty(dev, block); -- } else { -- -- __u8 *buffer = yaffs_GetTempBuffer(dev, __LINE__); -- -- yaffs_VerifyBlock(dev, bi, block); -- -- maxCopies = (wholeBlock) ? dev->nChunksPerBlock : 10; -- oldChunk = block * dev->nChunksPerBlock + dev->gcChunk; -- -- for (/* init already done */; -- retVal == YAFFS_OK && -- dev->gcChunk < dev->nChunksPerBlock && -- (bi->blockState == YAFFS_BLOCK_STATE_COLLECTING) && -- maxCopies > 0; -- dev->gcChunk++, oldChunk++) { -- if (yaffs_CheckChunkBit(dev, block, dev->gcChunk)) { -- -- /* This page is in use and might need to be copied off */ -- -- maxCopies--; -- -- markNAND = 1; -- -- yaffs_InitialiseTags(&tags); -- -- yaffs_ReadChunkWithTagsFromNAND(dev, oldChunk, -- buffer, &tags); -- -- object = -- yaffs_FindObjectByNumber(dev, -- tags.objectId); -- -- T(YAFFS_TRACE_GC_DETAIL, -- (TSTR -- ("Collecting chunk in block %d, %d %d %d " TENDSTR), -- dev->gcChunk, tags.objectId, tags.chunkId, -- tags.byteCount)); -- -- if (object && !yaffs_SkipVerification(dev)) { -- if (tags.chunkId == 0) -- matchingChunk = object->hdrChunk; -- else if (object->softDeleted) -- matchingChunk = oldChunk; /* Defeat the test */ -- else -- matchingChunk = yaffs_FindChunkInFile(object, tags.chunkId, NULL); -- -- if (oldChunk != matchingChunk) -- T(YAFFS_TRACE_ERROR, -- (TSTR("gc: page in gc mismatch: %d %d %d %d"TENDSTR), -- oldChunk, matchingChunk, tags.objectId, tags.chunkId)); -- -- } -- -- if (!object) { -- T(YAFFS_TRACE_ERROR, -- (TSTR -- ("page %d in gc has no object: %d %d %d " -- TENDSTR), oldChunk, -- tags.objectId, tags.chunkId, tags.byteCount)); -- } -- -- if (object && -- object->deleted && -- object->softDeleted && -- tags.chunkId != 0) { -- /* Data chunk in a soft deleted file, throw it away -- * It's a soft deleted data chunk, -- * No need to copy this, just forget about it and -- * fix up the object. -- */ -- -- object->nDataChunks--; -- -- if (object->nDataChunks <= 0) { -- /* remeber to clean up the object */ -- dev->gcCleanupList[cleanups] = -- tags.objectId; -- cleanups++; -- } -- markNAND = 0; -- } else if (0) { -- /* Todo object && object->deleted && object->nDataChunks == 0 */ -- /* Deleted object header with no data chunks. -- * Can be discarded and the file deleted. -- */ -- object->hdrChunk = 0; -- yaffs_FreeTnode(object->myDev, -- object->variant. -- fileVariant.top); -- object->variant.fileVariant.top = NULL; -- yaffs_DoGenericObjectDeletion(object); -- -- } else if (object) { -- /* It's either a data chunk in a live file or -- * an ObjectHeader, so we're interested in it. -- * NB Need to keep the ObjectHeaders of deleted files -- * until the whole file has been deleted off -- */ -- tags.serialNumber++; -- -- dev->nGCCopies++; -- -- if (tags.chunkId == 0) { -- /* It is an object Id, -- * We need to nuke the shrinkheader flags first -- * We no longer want the shrinkHeader flag since its work is done -- * and if it is left in place it will mess up scanning. -- */ -- -- yaffs_ObjectHeader *oh; -- oh = (yaffs_ObjectHeader *)buffer; -- oh->isShrink = 0; -- tags.extraIsShrinkHeader = 0; -- -- yaffs_VerifyObjectHeader(object, oh, &tags, 1); -- } -- -- newChunk = -- yaffs_WriteNewChunkWithTagsToNAND(dev, buffer, &tags, 1); -- -- if (newChunk < 0) { -- retVal = YAFFS_FAIL; -- } else { -- -- /* Ok, now fix up the Tnodes etc. */ -- -- if (tags.chunkId == 0) { -- /* It's a header */ -- object->hdrChunk = newChunk; -- object->serial = tags.serialNumber; -- } else { -- /* It's a data chunk */ -- yaffs_PutChunkIntoFile -- (object, -- tags.chunkId, -- newChunk, 0); -- } -- } -- } -- -- if (retVal == YAFFS_OK) -- yaffs_DeleteChunk(dev, oldChunk, markNAND, __LINE__); -- -- } -- } -- -- yaffs_ReleaseTempBuffer(dev, buffer, __LINE__); -- -- -- /* Do any required cleanups */ -- for (i = 0; i < cleanups; i++) { -- /* Time to delete the file too */ -- object = -- yaffs_FindObjectByNumber(dev, -- dev->gcCleanupList[i]); -- if (object) { -- yaffs_FreeTnode(dev, -- object->variant.fileVariant. -- top); -- object->variant.fileVariant.top = NULL; -- T(YAFFS_TRACE_GC, -- (TSTR -- ("yaffs: About to finally delete object %d" -- TENDSTR), object->objectId)); -- yaffs_DoGenericObjectDeletion(object); -- object->myDev->nDeletedFiles--; -- } -- -- } -- -- } -- -- yaffs_VerifyCollectedBlock(dev, bi, block); -- -- chunksAfter = yaffs_GetErasedChunks(dev); -- if (chunksBefore >= chunksAfter) { -- T(YAFFS_TRACE_GC, -- (TSTR -- ("gc did not increase free chunks before %d after %d" -- TENDSTR), chunksBefore, chunksAfter)); -- } -- -- /* If the gc completed then clear the current gcBlock so that we find another. */ -- if (bi->blockState != YAFFS_BLOCK_STATE_COLLECTING) { -- dev->gcBlock = -1; -- dev->gcChunk = 0; -- } -- -- dev->isDoingGC = 0; -- -- return retVal; --} -- --/* New garbage collector -- * If we're very low on erased blocks then we do aggressive garbage collection -- * otherwise we do "leasurely" garbage collection. -- * Aggressive gc looks further (whole array) and will accept less dirty blocks. -- * Passive gc only inspects smaller areas and will only accept more dirty blocks. -- * -- * The idea is to help clear out space in a more spread-out manner. -- * Dunno if it really does anything useful. -- */ --static int yaffs_CheckGarbageCollection(yaffs_Device *dev) --{ -- int block; -- int aggressive; -- int gcOk = YAFFS_OK; -- int maxTries = 0; -- -- int checkpointBlockAdjust; -- -- if (dev->isDoingGC) { -- /* Bail out so we don't get recursive gc */ -- return YAFFS_OK; -- } -- -- /* This loop should pass the first time. -- * We'll only see looping here if the erase of the collected block fails. -- */ -- -- do { -- maxTries++; -- -- checkpointBlockAdjust = yaffs_CalcCheckpointBlocksRequired(dev) - dev->blocksInCheckpoint; -- if (checkpointBlockAdjust < 0) -- checkpointBlockAdjust = 0; -- -- if (dev->nErasedBlocks < (dev->nReservedBlocks + checkpointBlockAdjust + 2)) { -- /* We need a block soon...*/ -- aggressive = 1; -- } else { -- /* We're in no hurry */ -- aggressive = 0; -- } -- -- if (dev->gcBlock <= 0) { -- dev->gcBlock = yaffs_FindBlockForGarbageCollection(dev, aggressive); -- dev->gcChunk = 0; -- } -- -- block = dev->gcBlock; -- -- if (block > 0) { -- dev->garbageCollections++; -- if (!aggressive) -- dev->passiveGarbageCollections++; -- -- T(YAFFS_TRACE_GC, -- (TSTR -- ("yaffs: GC erasedBlocks %d aggressive %d" TENDSTR), -- dev->nErasedBlocks, aggressive)); -- -- gcOk = yaffs_GarbageCollectBlock(dev, block, aggressive); -- } -- -- if (dev->nErasedBlocks < (dev->nReservedBlocks) && block > 0) { -- T(YAFFS_TRACE_GC, -- (TSTR -- ("yaffs: GC !!!no reclaim!!! erasedBlocks %d after try %d block %d" -- TENDSTR), dev->nErasedBlocks, maxTries, block)); -- } -- } while ((dev->nErasedBlocks < dev->nReservedBlocks) && -- (block > 0) && -- (maxTries < 2)); -- -- return aggressive ? gcOk : YAFFS_OK; --} -- --/*------------------------- TAGS --------------------------------*/ -- --static int yaffs_TagsMatch(const yaffs_ExtendedTags *tags, int objectId, -- int chunkInObject) --{ -- return (tags->chunkId == chunkInObject && -- tags->objectId == objectId && !tags->chunkDeleted) ? 1 : 0; -- --} -- -- --/*-------------------- Data file manipulation -----------------*/ -- --static int yaffs_FindChunkInFile(yaffs_Object *in, int chunkInInode, -- yaffs_ExtendedTags *tags) --{ -- /*Get the Tnode, then get the level 0 offset chunk offset */ -- yaffs_Tnode *tn; -- int theChunk = -1; -- yaffs_ExtendedTags localTags; -- int retVal = -1; -- -- yaffs_Device *dev = in->myDev; -- -- if (!tags) { -- /* Passed a NULL, so use our own tags space */ -- tags = &localTags; -- } -- -- tn = yaffs_FindLevel0Tnode(dev, &in->variant.fileVariant, chunkInInode); -- -- if (tn) { -- theChunk = yaffs_GetChunkGroupBase(dev, tn, chunkInInode); -- -- retVal = -- yaffs_FindChunkInGroup(dev, theChunk, tags, in->objectId, -- chunkInInode); -- } -- return retVal; --} -- --static int yaffs_FindAndDeleteChunkInFile(yaffs_Object *in, int chunkInInode, -- yaffs_ExtendedTags *tags) --{ -- /* Get the Tnode, then get the level 0 offset chunk offset */ -- yaffs_Tnode *tn; -- int theChunk = -1; -- yaffs_ExtendedTags localTags; -- -- yaffs_Device *dev = in->myDev; -- int retVal = -1; -- -- if (!tags) { -- /* Passed a NULL, so use our own tags space */ -- tags = &localTags; -- } -- -- tn = yaffs_FindLevel0Tnode(dev, &in->variant.fileVariant, chunkInInode); -- -- if (tn) { -- -- theChunk = yaffs_GetChunkGroupBase(dev, tn, chunkInInode); -- -- retVal = -- yaffs_FindChunkInGroup(dev, theChunk, tags, in->objectId, -- chunkInInode); -- -- /* Delete the entry in the filestructure (if found) */ -- if (retVal != -1) -- yaffs_PutLevel0Tnode(dev, tn, chunkInInode, 0); -- } -- -- return retVal; --} -- --#ifdef YAFFS_PARANOID -- --static int yaffs_CheckFileSanity(yaffs_Object *in) --{ -- int chunk; -- int nChunks; -- int fSize; -- int failed = 0; -- int objId; -- yaffs_Tnode *tn; -- yaffs_Tags localTags; -- yaffs_Tags *tags = &localTags; -- int theChunk; -- int chunkDeleted; -- -- if (in->variantType != YAFFS_OBJECT_TYPE_FILE) -- return YAFFS_FAIL; -- -- objId = in->objectId; -- fSize = in->variant.fileVariant.fileSize; -- nChunks = -- (fSize + in->myDev->nDataBytesPerChunk - 1) / in->myDev->nDataBytesPerChunk; -- -- for (chunk = 1; chunk <= nChunks; chunk++) { -- tn = yaffs_FindLevel0Tnode(in->myDev, &in->variant.fileVariant, -- chunk); -- -- if (tn) { -- -- theChunk = yaffs_GetChunkGroupBase(dev, tn, chunk); -- -- if (yaffs_CheckChunkBits -- (dev, theChunk / dev->nChunksPerBlock, -- theChunk % dev->nChunksPerBlock)) { -- -- yaffs_ReadChunkTagsFromNAND(in->myDev, theChunk, -- tags, -- &chunkDeleted); -- if (yaffs_TagsMatch -- (tags, in->objectId, chunk, chunkDeleted)) { -- /* found it; */ -- -- } -- } else { -- -- failed = 1; -- } -- -- } else { -- /* T(("No level 0 found for %d\n", chunk)); */ -- } -- } -- -- return failed ? YAFFS_FAIL : YAFFS_OK; --} -- --#endif -- --static int yaffs_PutChunkIntoFile(yaffs_Object *in, int chunkInInode, -- int chunkInNAND, int inScan) --{ -- /* NB inScan is zero unless scanning. -- * For forward scanning, inScan is > 0; -- * for backward scanning inScan is < 0 -- */ -- -- yaffs_Tnode *tn; -- yaffs_Device *dev = in->myDev; -- int existingChunk; -- yaffs_ExtendedTags existingTags; -- yaffs_ExtendedTags newTags; -- unsigned existingSerial, newSerial; -- -- if (in->variantType != YAFFS_OBJECT_TYPE_FILE) { -- /* Just ignore an attempt at putting a chunk into a non-file during scanning -- * If it is not during Scanning then something went wrong! -- */ -- if (!inScan) { -- T(YAFFS_TRACE_ERROR, -- (TSTR -- ("yaffs tragedy:attempt to put data chunk into a non-file" -- TENDSTR))); -- YBUG(); -- } -- -- yaffs_DeleteChunk(dev, chunkInNAND, 1, __LINE__); -- return YAFFS_OK; -- } -- -- tn = yaffs_AddOrFindLevel0Tnode(dev, -- &in->variant.fileVariant, -- chunkInInode, -- NULL); -- if (!tn) -- return YAFFS_FAIL; -- -- existingChunk = yaffs_GetChunkGroupBase(dev, tn, chunkInInode); -- -- if (inScan != 0) { -- /* If we're scanning then we need to test for duplicates -- * NB This does not need to be efficient since it should only ever -- * happen when the power fails during a write, then only one -- * chunk should ever be affected. -- * -- * Correction for YAFFS2: This could happen quite a lot and we need to think about efficiency! TODO -- * Update: For backward scanning we don't need to re-read tags so this is quite cheap. -- */ -- -- if (existingChunk > 0) { -- /* NB Right now existing chunk will not be real chunkId if the device >= 32MB -- * thus we have to do a FindChunkInFile to get the real chunk id. -- * -- * We have a duplicate now we need to decide which one to use: -- * -- * Backwards scanning YAFFS2: The old one is what we use, dump the new one. -- * Forward scanning YAFFS2: The new one is what we use, dump the old one. -- * YAFFS1: Get both sets of tags and compare serial numbers. -- */ -- -- if (inScan > 0) { -- /* Only do this for forward scanning */ -- yaffs_ReadChunkWithTagsFromNAND(dev, -- chunkInNAND, -- NULL, &newTags); -- -- /* Do a proper find */ -- existingChunk = -- yaffs_FindChunkInFile(in, chunkInInode, -- &existingTags); -- } -- -- if (existingChunk <= 0) { -- /*Hoosterman - how did this happen? */ -- -- T(YAFFS_TRACE_ERROR, -- (TSTR -- ("yaffs tragedy: existing chunk < 0 in scan" -- TENDSTR))); -- -- } -- -- /* NB The deleted flags should be false, otherwise the chunks will -- * not be loaded during a scan -- */ -- -- if (inScan > 0) { -- newSerial = newTags.serialNumber; -- existingSerial = existingTags.serialNumber; -- } -- -- if ((inScan > 0) && -- (in->myDev->isYaffs2 || -- existingChunk <= 0 || -- ((existingSerial + 1) & 3) == newSerial)) { -- /* Forward scanning. -- * Use new -- * Delete the old one and drop through to update the tnode -- */ -- yaffs_DeleteChunk(dev, existingChunk, 1, -- __LINE__); -- } else { -- /* Backward scanning or we want to use the existing one -- * Use existing. -- * Delete the new one and return early so that the tnode isn't changed -- */ -- yaffs_DeleteChunk(dev, chunkInNAND, 1, -- __LINE__); -- return YAFFS_OK; -- } -- } -- -- } -- -- if (existingChunk == 0) -- in->nDataChunks++; -- -- yaffs_PutLevel0Tnode(dev, tn, chunkInInode, chunkInNAND); -- -- return YAFFS_OK; --} -- --static int yaffs_ReadChunkDataFromObject(yaffs_Object *in, int chunkInInode, -- __u8 *buffer) --{ -- int chunkInNAND = yaffs_FindChunkInFile(in, chunkInInode, NULL); -- -- if (chunkInNAND >= 0) -- return yaffs_ReadChunkWithTagsFromNAND(in->myDev, chunkInNAND, -- buffer, NULL); -- else { -- T(YAFFS_TRACE_NANDACCESS, -- (TSTR("Chunk %d not found zero instead" TENDSTR), -- chunkInNAND)); -- /* get sane (zero) data if you read a hole */ -- memset(buffer, 0, in->myDev->nDataBytesPerChunk); -- return 0; -- } -- --} -- --void yaffs_DeleteChunk(yaffs_Device *dev, int chunkId, int markNAND, int lyn) --{ -- int block; -- int page; -- yaffs_ExtendedTags tags; -- yaffs_BlockInfo *bi; -- -- if (chunkId <= 0) -- return; -- -- dev->nDeletions++; -- block = chunkId / dev->nChunksPerBlock; -- page = chunkId % dev->nChunksPerBlock; -- -- -- if (!yaffs_CheckChunkBit(dev, block, page)) -- T(YAFFS_TRACE_VERIFY, -- (TSTR("Deleting invalid chunk %d"TENDSTR), -- chunkId)); -- -- bi = yaffs_GetBlockInfo(dev, block); -- -- T(YAFFS_TRACE_DELETION, -- (TSTR("line %d delete of chunk %d" TENDSTR), lyn, chunkId)); -- -- if (markNAND && -- bi->blockState != YAFFS_BLOCK_STATE_COLLECTING && !dev->isYaffs2) { -- -- yaffs_InitialiseTags(&tags); -- -- tags.chunkDeleted = 1; -- -- yaffs_WriteChunkWithTagsToNAND(dev, chunkId, NULL, &tags); -- yaffs_HandleUpdateChunk(dev, chunkId, &tags); -- } else { -- dev->nUnmarkedDeletions++; -- } -- -- /* Pull out of the management area. -- * If the whole block became dirty, this will kick off an erasure. -- */ -- if (bi->blockState == YAFFS_BLOCK_STATE_ALLOCATING || -- bi->blockState == YAFFS_BLOCK_STATE_FULL || -- bi->blockState == YAFFS_BLOCK_STATE_NEEDS_SCANNING || -- bi->blockState == YAFFS_BLOCK_STATE_COLLECTING) { -- dev->nFreeChunks++; -- -- yaffs_ClearChunkBit(dev, block, page); -- -- bi->pagesInUse--; -- -- if (bi->pagesInUse == 0 && -- !bi->hasShrinkHeader && -- bi->blockState != YAFFS_BLOCK_STATE_ALLOCATING && -- bi->blockState != YAFFS_BLOCK_STATE_NEEDS_SCANNING) { -- yaffs_BlockBecameDirty(dev, block); -- } -- -- } -- --} -- --static int yaffs_WriteChunkDataToObject(yaffs_Object *in, int chunkInInode, -- const __u8 *buffer, int nBytes, -- int useReserve) --{ -- /* Find old chunk Need to do this to get serial number -- * Write new one and patch into tree. -- * Invalidate old tags. -- */ -- -- int prevChunkId; -- yaffs_ExtendedTags prevTags; -- -- int newChunkId; -- yaffs_ExtendedTags newTags; -- -- yaffs_Device *dev = in->myDev; -- -- yaffs_CheckGarbageCollection(dev); -- -- /* Get the previous chunk at this location in the file if it exists */ -- prevChunkId = yaffs_FindChunkInFile(in, chunkInInode, &prevTags); -- -- /* Set up new tags */ -- yaffs_InitialiseTags(&newTags); -- -- newTags.chunkId = chunkInInode; -- newTags.objectId = in->objectId; -- newTags.serialNumber = -- (prevChunkId >= 0) ? prevTags.serialNumber + 1 : 1; -- newTags.byteCount = nBytes; -- -- if (nBytes < 1 || nBytes > dev->totalBytesPerChunk) { -- T(YAFFS_TRACE_ERROR, -- (TSTR("Writing %d bytes to chunk!!!!!!!!!" TENDSTR), nBytes)); -- YBUG(); -- } -- -- newChunkId = -- yaffs_WriteNewChunkWithTagsToNAND(dev, buffer, &newTags, -- useReserve); -- -- if (newChunkId >= 0) { -- yaffs_PutChunkIntoFile(in, chunkInInode, newChunkId, 0); -- -- if (prevChunkId >= 0) -- yaffs_DeleteChunk(dev, prevChunkId, 1, __LINE__); -- -- yaffs_CheckFileSanity(in); -- } -- return newChunkId; -- --} -- --/* UpdateObjectHeader updates the header on NAND for an object. -- * If name is not NULL, then that new name is used. -- */ --int yaffs_UpdateObjectHeader(yaffs_Object *in, const YCHAR *name, int force, -- int isShrink, int shadows) --{ -- -- yaffs_BlockInfo *bi; -- -- yaffs_Device *dev = in->myDev; -- -- int prevChunkId; -- int retVal = 0; -- int result = 0; -- -- int newChunkId; -- yaffs_ExtendedTags newTags; -- yaffs_ExtendedTags oldTags; -- -- __u8 *buffer = NULL; -- YCHAR oldName[YAFFS_MAX_NAME_LENGTH + 1]; -- -- yaffs_ObjectHeader *oh = NULL; -+ yaffs_obj_t *in; -+ YCHAR *str = NULL; - -- yaffs_strcpy(oldName, _Y("silly old name")); -+ yaffs_dev_t *dev = parent->my_dev; - -+ /* Check if the entry exists. If it does then fail the call since we don't want a dup.*/ -+ if (yaffs_find_by_name(parent, name)) -+ return NULL; - -- if (!in->fake || -- in == dev->rootDir || /* The rootDir should also be saved */ -- force) { -+ if (type == YAFFS_OBJECT_TYPE_SYMLINK) { -+ str = yaffs_clone_str(aliasString); -+ if (!str) -+ return NULL; -+ } - -- yaffs_CheckGarbageCollection(dev); -- yaffs_CheckObjectDetailsLoaded(in); -+ in = yaffs_new_obj(dev, -1, type); - -- buffer = yaffs_GetTempBuffer(in->myDev, __LINE__); -- oh = (yaffs_ObjectHeader *) buffer; -+ if (!in){ -+ if(str) -+ YFREE(str); -+ return NULL; -+ } - -- prevChunkId = in->hdrChunk; - -- if (prevChunkId > 0) { -- result = yaffs_ReadChunkWithTagsFromNAND(dev, prevChunkId, -- buffer, &oldTags); - -- yaffs_VerifyObjectHeader(in, oh, &oldTags, 0); - -- memcpy(oldName, oh->name, sizeof(oh->name)); -- } - -- memset(buffer, 0xFF, dev->nDataBytesPerChunk); -+ if (in) { -+ in->hdr_chunk = 0; -+ in->valid = 1; -+ in->variant_type = type; - -- oh->type = in->variantType; -- oh->yst_mode = in->yst_mode; -- oh->shadowsObject = oh->inbandShadowsObject = shadows; -+ in->yst_mode = mode; - - #ifdef CONFIG_YAFFS_WINCE -- oh->win_atime[0] = in->win_atime[0]; -- oh->win_ctime[0] = in->win_ctime[0]; -- oh->win_mtime[0] = in->win_mtime[0]; -- oh->win_atime[1] = in->win_atime[1]; -- oh->win_ctime[1] = in->win_ctime[1]; -- oh->win_mtime[1] = in->win_mtime[1]; -+ yfsd_win_file_time_now(in->win_atime); -+ in->win_ctime[0] = in->win_mtime[0] = in->win_atime[0]; -+ in->win_ctime[1] = in->win_mtime[1] = in->win_atime[1]; -+ - #else -- oh->yst_uid = in->yst_uid; -- oh->yst_gid = in->yst_gid; -- oh->yst_atime = in->yst_atime; -- oh->yst_mtime = in->yst_mtime; -- oh->yst_ctime = in->yst_ctime; -- oh->yst_rdev = in->yst_rdev; -+ in->yst_atime = in->yst_mtime = in->yst_ctime = Y_CURRENT_TIME; -+ -+ in->yst_rdev = rdev; -+ in->yst_uid = uid; -+ in->yst_gid = gid; - #endif -- if (in->parent) -- oh->parentObjectId = in->parent->objectId; -- else -- oh->parentObjectId = 0; -+ in->n_data_chunks = 0; - -- if (name && *name) { -- memset(oh->name, 0, sizeof(oh->name)); -- yaffs_strncpy(oh->name, name, YAFFS_MAX_NAME_LENGTH); -- } else if (prevChunkId >= 0) -- memcpy(oh->name, oldName, sizeof(oh->name)); -- else -- memset(oh->name, 0, sizeof(oh->name)); -+ yaffs_set_obj_name(in, name); -+ in->dirty = 1; - -- oh->isShrink = isShrink; -+ yaffs_add_obj_to_dir(parent, in); - -- switch (in->variantType) { -- case YAFFS_OBJECT_TYPE_UNKNOWN: -- /* Should not happen */ -- break; -- case YAFFS_OBJECT_TYPE_FILE: -- oh->fileSize = -- (oh->parentObjectId == YAFFS_OBJECTID_DELETED -- || oh->parentObjectId == -- YAFFS_OBJECTID_UNLINKED) ? 0 : in->variant. -- fileVariant.fileSize; -+ in->my_dev = parent->my_dev; -+ -+ switch (type) { -+ case YAFFS_OBJECT_TYPE_SYMLINK: -+ in->variant.symlink_variant.alias = str; - break; - case YAFFS_OBJECT_TYPE_HARDLINK: -- oh->equivalentObjectId = -- in->variant.hardLinkVariant.equivalentObjectId; -- break; -- case YAFFS_OBJECT_TYPE_SPECIAL: -- /* Do nothing */ -+ in->variant.hardlink_variant.equiv_obj = -+ equiv_obj; -+ in->variant.hardlink_variant.equiv_id = -+ equiv_obj->obj_id; -+ ylist_add(&in->hard_links, &equiv_obj->hard_links); - break; -+ case YAFFS_OBJECT_TYPE_FILE: - case YAFFS_OBJECT_TYPE_DIRECTORY: -- /* Do nothing */ -- break; -- case YAFFS_OBJECT_TYPE_SYMLINK: -- yaffs_strncpy(oh->alias, -- in->variant.symLinkVariant.alias, -- YAFFS_MAX_ALIAS_LENGTH); -- oh->alias[YAFFS_MAX_ALIAS_LENGTH] = 0; -+ case YAFFS_OBJECT_TYPE_SPECIAL: -+ case YAFFS_OBJECT_TYPE_UNKNOWN: -+ /* do nothing */ - break; - } - -- /* Tags */ -- yaffs_InitialiseTags(&newTags); -- in->serial++; -- newTags.chunkId = 0; -- newTags.objectId = in->objectId; -- newTags.serialNumber = in->serial; -- -- /* Add extra info for file header */ -- -- newTags.extraHeaderInfoAvailable = 1; -- newTags.extraParentObjectId = oh->parentObjectId; -- newTags.extraFileLength = oh->fileSize; -- newTags.extraIsShrinkHeader = oh->isShrink; -- newTags.extraEquivalentObjectId = oh->equivalentObjectId; -- newTags.extraShadows = (oh->shadowsObject > 0) ? 1 : 0; -- newTags.extraObjectType = in->variantType; -- -- yaffs_VerifyObjectHeader(in, oh, &newTags, 1); -- -- /* Create new chunk in NAND */ -- newChunkId = -- yaffs_WriteNewChunkWithTagsToNAND(dev, buffer, &newTags, -- (prevChunkId >= 0) ? 1 : 0); -- -- if (newChunkId >= 0) { -- -- in->hdrChunk = newChunkId; -- -- if (prevChunkId >= 0) { -- yaffs_DeleteChunk(dev, prevChunkId, 1, -- __LINE__); -- } -- -- if (!yaffs_ObjectHasCachedWriteData(in)) -- in->dirty = 0; -- -- /* If this was a shrink, then mark the block that the chunk lives on */ -- if (isShrink) { -- bi = yaffs_GetBlockInfo(in->myDev, -- newChunkId / in->myDev->nChunksPerBlock); -- bi->hasShrinkHeader = 1; -- } -- -+ if (yaffs_update_oh(in, name, 0, 0, 0, NULL) < 0) { -+ /* Could not create the object header, fail the creation */ -+ yaffs_del_obj(in); -+ in = NULL; - } - -- retVal = newChunkId; -- -+ yaffs_update_parent(parent); - } - -- if (buffer) -- yaffs_ReleaseTempBuffer(dev, buffer, __LINE__); -- -- return retVal; -+ return in; - } - --/*------------------------ Short Operations Cache ---------------------------------------- -- * In many situations where there is no high level buffering (eg WinCE) a lot of -- * reads might be short sequential reads, and a lot of writes may be short -- * sequential writes. eg. scanning/writing a jpeg file. -- * In these cases, a short read/write cache can provide a huge perfomance benefit -- * with dumb-as-a-rock code. -- * In Linux, the page cache provides read buffering aand the short op cache provides write -- * buffering. -- * -- * There are a limited number (~10) of cache chunks per device so that we don't -- * need a very intelligent search. -- */ -- --static int yaffs_ObjectHasCachedWriteData(yaffs_Object *obj) -+yaffs_obj_t *yaffs_create_file(yaffs_obj_t *parent, const YCHAR *name, -+ __u32 mode, __u32 uid, __u32 gid) - { -- yaffs_Device *dev = obj->myDev; -- int i; -- yaffs_ChunkCache *cache; -- int nCaches = obj->myDev->nShortOpCaches; -- -- for (i = 0; i < nCaches; i++) { -- cache = &dev->srCache[i]; -- if (cache->object == obj && -- cache->dirty) -- return 1; -- } -+ return yaffs_create_obj(YAFFS_OBJECT_TYPE_FILE, parent, name, mode, -+ uid, gid, NULL, NULL, 0); -+} - -- return 0; -+yaffs_obj_t *yaffs_create_dir(yaffs_obj_t *parent, const YCHAR *name, -+ __u32 mode, __u32 uid, __u32 gid) -+{ -+ return yaffs_create_obj(YAFFS_OBJECT_TYPE_DIRECTORY, parent, name, -+ mode, uid, gid, NULL, NULL, 0); - } - -+yaffs_obj_t *yaffs_create_special(yaffs_obj_t *parent, const YCHAR *name, -+ __u32 mode, __u32 uid, __u32 gid, __u32 rdev) -+{ -+ return yaffs_create_obj(YAFFS_OBJECT_TYPE_SPECIAL, parent, name, mode, -+ uid, gid, NULL, NULL, rdev); -+} - --static void yaffs_FlushFilesChunkCache(yaffs_Object *obj) -+yaffs_obj_t *yaffs_create_symlink(yaffs_obj_t *parent, const YCHAR *name, -+ __u32 mode, __u32 uid, __u32 gid, -+ const YCHAR *alias) - { -- yaffs_Device *dev = obj->myDev; -- int lowest = -99; /* Stop compiler whining. */ -- int i; -- yaffs_ChunkCache *cache; -- int chunkWritten = 0; -- int nCaches = obj->myDev->nShortOpCaches; -+ return yaffs_create_obj(YAFFS_OBJECT_TYPE_SYMLINK, parent, name, mode, -+ uid, gid, NULL, alias, 0); -+} - -- if (nCaches > 0) { -- do { -- cache = NULL; -+/* yaffs_link_obj returns the object id of the equivalent object.*/ -+yaffs_obj_t *yaffs_link_obj(yaffs_obj_t *parent, const YCHAR *name, -+ yaffs_obj_t *equiv_obj) -+{ -+ /* Get the real object in case we were fed a hard link as an equivalent object */ -+ equiv_obj = yaffs_get_equivalent_obj(equiv_obj); - -- /* Find the dirty cache for this object with the lowest chunk id. */ -- for (i = 0; i < nCaches; i++) { -- if (dev->srCache[i].object == obj && -- dev->srCache[i].dirty) { -- if (!cache -- || dev->srCache[i].chunkId < -- lowest) { -- cache = &dev->srCache[i]; -- lowest = cache->chunkId; -- } -- } -- } -+ if (yaffs_create_obj -+ (YAFFS_OBJECT_TYPE_HARDLINK, parent, name, 0, 0, 0, -+ equiv_obj, NULL, 0)) { -+ return equiv_obj; -+ } else { -+ return NULL; -+ } - -- if (cache && !cache->locked) { -- /* Write it out and free it up */ -+} - -- chunkWritten = -- yaffs_WriteChunkDataToObject(cache->object, -- cache->chunkId, -- cache->data, -- cache->nBytes, -- 1); -- cache->dirty = 0; -- cache->object = NULL; -- } -+static int yaffs_change_obj_name(yaffs_obj_t *obj, yaffs_obj_t *new_dir, -+ const YCHAR *new_name, int force, int shadows) -+{ -+ int unlinkOp; -+ int deleteOp; - -- } while (cache && chunkWritten > 0); -+ yaffs_obj_t *existingTarget; - -- if (cache) { -- /* Hoosterman, disk full while writing cache out. */ -- T(YAFFS_TRACE_ERROR, -- (TSTR("yaffs tragedy: no space during cache write" TENDSTR))); -+ if (new_dir == NULL) -+ new_dir = obj->parent; /* use the old directory */ - -- } -+ if (new_dir->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) { -+ T(YAFFS_TRACE_ALWAYS, -+ (TSTR -+ ("tragedy: yaffs_change_obj_name: new_dir is not a directory" -+ TENDSTR))); -+ YBUG(); - } - --} -+ /* TODO: Do we need this different handling for YAFFS2 and YAFFS1?? */ -+ if (obj->my_dev->param.is_yaffs2) -+ unlinkOp = (new_dir == obj->my_dev->unlinked_dir); -+ else -+ unlinkOp = (new_dir == obj->my_dev->unlinked_dir -+ && obj->variant_type == YAFFS_OBJECT_TYPE_FILE); - --/*yaffs_FlushEntireDeviceCache(dev) -- * -- * -- */ -+ deleteOp = (new_dir == obj->my_dev->del_dir); - --void yaffs_FlushEntireDeviceCache(yaffs_Device *dev) --{ -- yaffs_Object *obj; -- int nCaches = dev->nShortOpCaches; -- int i; -+ existingTarget = yaffs_find_by_name(new_dir, new_name); - -- /* Find a dirty object in the cache and flush it... -- * until there are no further dirty objects. -+ /* If the object is a file going into the unlinked directory, -+ * then it is OK to just stuff it in since duplicate names are allowed. -+ * else only proceed if the new name does not exist and if we're putting -+ * it into a directory. - */ -- do { -- obj = NULL; -- for (i = 0; i < nCaches && !obj; i++) { -- if (dev->srCache[i].object && -- dev->srCache[i].dirty) -- obj = dev->srCache[i].object; -- -- } -- if (obj) -- yaffs_FlushFilesChunkCache(obj); -- -- } while (obj); -- --} -+ if ((unlinkOp || -+ deleteOp || -+ force || -+ (shadows > 0) || -+ !existingTarget) && -+ new_dir->variant_type == YAFFS_OBJECT_TYPE_DIRECTORY) { -+ yaffs_set_obj_name(obj, new_name); -+ obj->dirty = 1; - -+ yaffs_add_obj_to_dir(new_dir, obj); - --/* Grab us a cache chunk for use. -- * First look for an empty one. -- * Then look for the least recently used non-dirty one. -- * Then look for the least recently used dirty one...., flush and look again. -- */ --static yaffs_ChunkCache *yaffs_GrabChunkCacheWorker(yaffs_Device *dev) --{ -- int i; -+ if (unlinkOp) -+ obj->unlinked = 1; - -- if (dev->nShortOpCaches > 0) { -- for (i = 0; i < dev->nShortOpCaches; i++) { -- if (!dev->srCache[i].object) -- return &dev->srCache[i]; -- } -+ /* If it is a deletion then we mark it as a shrink for gc purposes. */ -+ if (yaffs_update_oh(obj, new_name, 0, deleteOp, shadows, NULL) >= 0) -+ return YAFFS_OK; - } - -- return NULL; -+ return YAFFS_FAIL; - } - --static yaffs_ChunkCache *yaffs_GrabChunkCache(yaffs_Device *dev) -+int yaffs_rename_obj(yaffs_obj_t *old_dir, const YCHAR *old_name, -+ yaffs_obj_t *new_dir, const YCHAR *new_name) - { -- yaffs_ChunkCache *cache; -- yaffs_Object *theObj; -- int usage; -- int i; -- int pushout; -- -- if (dev->nShortOpCaches > 0) { -- /* Try find a non-dirty one... */ -- -- cache = yaffs_GrabChunkCacheWorker(dev); -+ yaffs_obj_t *obj = NULL; -+ yaffs_obj_t *existingTarget = NULL; -+ int force = 0; -+ int result; -+ yaffs_dev_t *dev; - -- if (!cache) { -- /* They were all dirty, find the last recently used object and flush -- * its cache, then find again. -- * NB what's here is not very accurate, we actually flush the object -- * the last recently used page. -- */ - -- /* With locking we can't assume we can use entry zero */ -+ if (!old_dir || old_dir->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) -+ YBUG(); -+ if (!new_dir || new_dir->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) -+ YBUG(); - -- theObj = NULL; -- usage = -1; -- cache = NULL; -- pushout = -1; -+ dev = old_dir->my_dev; - -- for (i = 0; i < dev->nShortOpCaches; i++) { -- if (dev->srCache[i].object && -- !dev->srCache[i].locked && -- (dev->srCache[i].lastUse < usage || !cache)) { -- usage = dev->srCache[i].lastUse; -- theObj = dev->srCache[i].object; -- cache = &dev->srCache[i]; -- pushout = i; -- } -- } -+#ifdef CONFIG_YAFFS_CASE_INSENSITIVE -+ /* Special case for case insemsitive systems (eg. WinCE). -+ * While look-up is case insensitive, the name isn't. -+ * Therefore we might want to change x.txt to X.txt -+ */ -+ if (old_dir == new_dir && yaffs_strcmp(old_name, new_name) == 0) -+ force = 1; -+#endif - -- if (!cache || cache->dirty) { -- /* Flush and try again */ -- yaffs_FlushFilesChunkCache(theObj); -- cache = yaffs_GrabChunkCacheWorker(dev); -- } -+ if(yaffs_strnlen(new_name,YAFFS_MAX_NAME_LENGTH+1) > YAFFS_MAX_NAME_LENGTH) -+ /* ENAMETOOLONG */ -+ return YAFFS_FAIL; - -- } -- return cache; -- } else -- return NULL; -+ obj = yaffs_find_by_name(old_dir, old_name); - --} -+ if (obj && obj->rename_allowed) { - --/* Find a cached chunk */ --static yaffs_ChunkCache *yaffs_FindChunkCache(const yaffs_Object *obj, -- int chunkId) --{ -- yaffs_Device *dev = obj->myDev; -- int i; -- if (dev->nShortOpCaches > 0) { -- for (i = 0; i < dev->nShortOpCaches; i++) { -- if (dev->srCache[i].object == obj && -- dev->srCache[i].chunkId == chunkId) { -- dev->cacheHits++; -+ /* Now do the handling for an existing target, if there is one */ - -- return &dev->srCache[i]; -- } -+ existingTarget = yaffs_find_by_name(new_dir, new_name); -+ if (existingTarget && -+ existingTarget->variant_type == YAFFS_OBJECT_TYPE_DIRECTORY && -+ !ylist_empty(&existingTarget->variant.dir_variant.children)) { -+ /* There is a target that is a non-empty directory, so we fail */ -+ return YAFFS_FAIL; /* EEXIST or ENOTEMPTY */ -+ } else if (existingTarget && existingTarget != obj) { -+ /* Nuke the target first, using shadowing, -+ * but only if it isn't the same object. -+ * -+ * Note we must disable gc otherwise it can mess up the shadowing. -+ * -+ */ -+ dev->gc_disable=1; -+ yaffs_change_obj_name(obj, new_dir, new_name, force, -+ existingTarget->obj_id); -+ existingTarget->is_shadowed = 1; -+ yaffs_unlink_obj(existingTarget); -+ dev->gc_disable=0; - } -+ -+ result = yaffs_change_obj_name(obj, new_dir, new_name, 1, 0); -+ -+ yaffs_update_parent(old_dir); -+ if(new_dir != old_dir) -+ yaffs_update_parent(new_dir); -+ -+ return result; - } -- return NULL; -+ return YAFFS_FAIL; - } - --/* Mark the chunk for the least recently used algorithym */ --static void yaffs_UseChunkCache(yaffs_Device *dev, yaffs_ChunkCache *cache, -- int isAWrite) -+/*------------------------- Block Management and Page Allocation ----------------*/ -+ -+static int yaffs_init_blocks(yaffs_dev_t *dev) - { -+ int nBlocks = dev->internal_end_block - dev->internal_start_block + 1; - -- if (dev->nShortOpCaches > 0) { -- if (dev->srLastUse < 0 || dev->srLastUse > 100000000) { -- /* Reset the cache usages */ -- int i; -- for (i = 1; i < dev->nShortOpCaches; i++) -- dev->srCache[i].lastUse = 0; -+ dev->block_info = NULL; -+ dev->chunk_bits = NULL; - -- dev->srLastUse = 0; -- } -+ dev->alloc_block = -1; /* force it to get a new one */ - -- dev->srLastUse++; -+ /* If the first allocation strategy fails, thry the alternate one */ -+ dev->block_info = YMALLOC(nBlocks * sizeof(yaffs_block_info_t)); -+ if (!dev->block_info) { -+ dev->block_info = YMALLOC_ALT(nBlocks * sizeof(yaffs_block_info_t)); -+ dev->block_info_alt = 1; -+ } else -+ dev->block_info_alt = 0; - -- cache->lastUse = dev->srLastUse; -+ if (dev->block_info) { -+ /* Set up dynamic blockinfo stuff. */ -+ dev->chunk_bit_stride = (dev->param.chunks_per_block + 7) / 8; /* round up bytes */ -+ dev->chunk_bits = YMALLOC(dev->chunk_bit_stride * nBlocks); -+ if (!dev->chunk_bits) { -+ dev->chunk_bits = YMALLOC_ALT(dev->chunk_bit_stride * nBlocks); -+ dev->chunk_bits_alt = 1; -+ } else -+ dev->chunk_bits_alt = 0; -+ } - -- if (isAWrite) -- cache->dirty = 1; -+ if (dev->block_info && dev->chunk_bits) { -+ memset(dev->block_info, 0, nBlocks * sizeof(yaffs_block_info_t)); -+ memset(dev->chunk_bits, 0, dev->chunk_bit_stride * nBlocks); -+ return YAFFS_OK; - } -+ -+ return YAFFS_FAIL; - } - --/* Invalidate a single cache page. -- * Do this when a whole page gets written, -- * ie the short cache for this page is no longer valid. -- */ --static void yaffs_InvalidateChunkCache(yaffs_Object *object, int chunkId) -+static void yaffs_deinit_blocks(yaffs_dev_t *dev) - { -- if (object->myDev->nShortOpCaches > 0) { -- yaffs_ChunkCache *cache = yaffs_FindChunkCache(object, chunkId); -+ if (dev->block_info_alt && dev->block_info) -+ YFREE_ALT(dev->block_info); -+ else if (dev->block_info) -+ YFREE(dev->block_info); - -- if (cache) -- cache->object = NULL; -- } --} -+ dev->block_info_alt = 0; - --/* Invalidate all the cache pages associated with this object -- * Do this whenever ther file is deleted or resized. -- */ --static void yaffs_InvalidateWholeChunkCache(yaffs_Object *in) --{ -- int i; -- yaffs_Device *dev = in->myDev; -+ dev->block_info = NULL; - -- if (dev->nShortOpCaches > 0) { -- /* Invalidate it. */ -- for (i = 0; i < dev->nShortOpCaches; i++) { -- if (dev->srCache[i].object == in) -- dev->srCache[i].object = NULL; -- } -- } -+ if (dev->chunk_bits_alt && dev->chunk_bits) -+ YFREE_ALT(dev->chunk_bits); -+ else if (dev->chunk_bits) -+ YFREE(dev->chunk_bits); -+ dev->chunk_bits_alt = 0; -+ dev->chunk_bits = NULL; - } - --/*--------------------- Checkpointing --------------------*/ -+void yaffs_block_became_dirty(yaffs_dev_t *dev, int block_no) -+{ -+ yaffs_block_info_t *bi = yaffs_get_block_info(dev, block_no); - -+ int erasedOk = 0; - --static int yaffs_WriteCheckpointValidityMarker(yaffs_Device *dev, int head) --{ -- yaffs_CheckpointValidity cp; -+ /* If the block is still healthy erase it and mark as clean. -+ * If the block has had a data failure, then retire it. -+ */ - -- memset(&cp, 0, sizeof(cp)); -+ T(YAFFS_TRACE_GC | YAFFS_TRACE_ERASE, -+ (TSTR("yaffs_block_became_dirty block %d state %d %s"TENDSTR), -+ block_no, bi->block_state, (bi->needs_retiring) ? "needs retiring" : "")); - -- cp.structType = sizeof(cp); -- cp.magic = YAFFS_MAGIC; -- cp.version = YAFFS_CHECKPOINT_VERSION; -- cp.head = (head) ? 1 : 0; -+ yaffs2_clear_oldest_dirty_seq(dev,bi); - -- return (yaffs_CheckpointWrite(dev, &cp, sizeof(cp)) == sizeof(cp)) ? -- 1 : 0; --} -+ bi->block_state = YAFFS_BLOCK_STATE_DIRTY; - --static int yaffs_ReadCheckpointValidityMarker(yaffs_Device *dev, int head) --{ -- yaffs_CheckpointValidity cp; -- int ok; -+ /* If this is the block being garbage collected then stop gc'ing this block */ -+ if(block_no == dev->gc_block) -+ dev->gc_block = 0; - -- ok = (yaffs_CheckpointRead(dev, &cp, sizeof(cp)) == sizeof(cp)); -+ /* If this block is currently the best candidate for gc then drop as a candidate */ -+ if(block_no == dev->gc_dirtiest){ -+ dev->gc_dirtiest = 0; -+ dev->gc_pages_in_use = 0; -+ } - -- if (ok) -- ok = (cp.structType == sizeof(cp)) && -- (cp.magic == YAFFS_MAGIC) && -- (cp.version == YAFFS_CHECKPOINT_VERSION) && -- (cp.head == ((head) ? 1 : 0)); -- return ok ? 1 : 0; --} -+ if (!bi->needs_retiring) { -+ yaffs2_checkpt_invalidate(dev); -+ erasedOk = yaffs_erase_block(dev, block_no); -+ if (!erasedOk) { -+ dev->n_erase_failures++; -+ T(YAFFS_TRACE_ERROR | YAFFS_TRACE_BAD_BLOCKS, -+ (TSTR("**>> Erasure failed %d" TENDSTR), block_no)); -+ } -+ } - --static void yaffs_DeviceToCheckpointDevice(yaffs_CheckpointDevice *cp, -- yaffs_Device *dev) --{ -- cp->nErasedBlocks = dev->nErasedBlocks; -- cp->allocationBlock = dev->allocationBlock; -- cp->allocationPage = dev->allocationPage; -- cp->nFreeChunks = dev->nFreeChunks; -+ if (erasedOk && -+ ((yaffs_trace_mask & YAFFS_TRACE_ERASE) || !yaffs_skip_verification(dev))) { -+ int i; -+ for (i = 0; i < dev->param.chunks_per_block; i++) { -+ if (!yaffs_check_chunk_erased -+ (dev, block_no * dev->param.chunks_per_block + i)) { -+ T(YAFFS_TRACE_ERROR, -+ (TSTR -+ (">>Block %d erasure supposedly OK, but chunk %d not erased" -+ TENDSTR), block_no, i)); -+ } -+ } -+ } -+ -+ if (erasedOk) { -+ /* Clean it up... */ -+ bi->block_state = YAFFS_BLOCK_STATE_EMPTY; -+ bi->seq_number = 0; -+ dev->n_erased_blocks++; -+ bi->pages_in_use = 0; -+ bi->soft_del_pages = 0; -+ bi->has_shrink_hdr = 0; -+ bi->skip_erased_check = 1; /* This is clean, so no need to check */ -+ bi->gc_prioritise = 0; -+ yaffs_clear_chunk_bits(dev, block_no); - -- cp->nDeletedFiles = dev->nDeletedFiles; -- cp->nUnlinkedFiles = dev->nUnlinkedFiles; -- cp->nBackgroundDeletions = dev->nBackgroundDeletions; -- cp->sequenceNumber = dev->sequenceNumber; -- cp->oldestDirtySequence = dev->oldestDirtySequence; -+ T(YAFFS_TRACE_ERASE, -+ (TSTR("Erased block %d" TENDSTR), block_no)); -+ } else { -+ dev->n_free_chunks -= dev->param.chunks_per_block; /* We lost a block of free space */ - -+ yaffs_retire_block(dev, block_no); -+ T(YAFFS_TRACE_ERROR | YAFFS_TRACE_BAD_BLOCKS, -+ (TSTR("**>> Block %d retired" TENDSTR), block_no)); -+ } - } - --static void yaffs_CheckpointDeviceToDevice(yaffs_Device *dev, -- yaffs_CheckpointDevice *cp) -+static int yaffs_find_alloc_block(yaffs_dev_t *dev) - { -- dev->nErasedBlocks = cp->nErasedBlocks; -- dev->allocationBlock = cp->allocationBlock; -- dev->allocationPage = cp->allocationPage; -- dev->nFreeChunks = cp->nFreeChunks; -- -- dev->nDeletedFiles = cp->nDeletedFiles; -- dev->nUnlinkedFiles = cp->nUnlinkedFiles; -- dev->nBackgroundDeletions = cp->nBackgroundDeletions; -- dev->sequenceNumber = cp->sequenceNumber; -- dev->oldestDirtySequence = cp->oldestDirtySequence; --} -+ int i; - -+ yaffs_block_info_t *bi; - --static int yaffs_WriteCheckpointDevice(yaffs_Device *dev) --{ -- yaffs_CheckpointDevice cp; -- __u32 nBytes; -- __u32 nBlocks = (dev->internalEndBlock - dev->internalStartBlock + 1); -+ if (dev->n_erased_blocks < 1) { -+ /* Hoosterman we've got a problem. -+ * Can't get space to gc -+ */ -+ T(YAFFS_TRACE_ERROR, -+ (TSTR("yaffs tragedy: no more erased blocks" TENDSTR))); - -- int ok; -+ return -1; -+ } - -- /* Write device runtime values*/ -- yaffs_DeviceToCheckpointDevice(&cp, dev); -- cp.structType = sizeof(cp); -+ /* Find an empty block. */ - -- ok = (yaffs_CheckpointWrite(dev, &cp, sizeof(cp)) == sizeof(cp)); -+ for (i = dev->internal_start_block; i <= dev->internal_end_block; i++) { -+ dev->alloc_block_finder++; -+ if (dev->alloc_block_finder < dev->internal_start_block -+ || dev->alloc_block_finder > dev->internal_end_block) { -+ dev->alloc_block_finder = dev->internal_start_block; -+ } - -- /* Write block info */ -- if (ok) { -- nBytes = nBlocks * sizeof(yaffs_BlockInfo); -- ok = (yaffs_CheckpointWrite(dev, dev->blockInfo, nBytes) == nBytes); -+ bi = yaffs_get_block_info(dev, dev->alloc_block_finder); -+ -+ if (bi->block_state == YAFFS_BLOCK_STATE_EMPTY) { -+ bi->block_state = YAFFS_BLOCK_STATE_ALLOCATING; -+ dev->seq_number++; -+ bi->seq_number = dev->seq_number; -+ dev->n_erased_blocks--; -+ T(YAFFS_TRACE_ALLOCATE, -+ (TSTR("Allocated block %d, seq %d, %d left" TENDSTR), -+ dev->alloc_block_finder, dev->seq_number, -+ dev->n_erased_blocks)); -+ return dev->alloc_block_finder; -+ } - } - -- /* Write chunk bits */ -- if (ok) { -- nBytes = nBlocks * dev->chunkBitmapStride; -- ok = (yaffs_CheckpointWrite(dev, dev->chunkBits, nBytes) == nBytes); -- } -- return ok ? 1 : 0; -+ T(YAFFS_TRACE_ALWAYS, -+ (TSTR -+ ("yaffs tragedy: no more erased blocks, but there should have been %d" -+ TENDSTR), dev->n_erased_blocks)); - -+ return -1; - } - --static int yaffs_ReadCheckpointDevice(yaffs_Device *dev) -+ -+/* -+ * Check if there's space to allocate... -+ * Thinks.... do we need top make this ths same as yaffs_get_free_chunks()? -+ */ -+int yaffs_check_alloc_available(yaffs_dev_t *dev, int n_chunks) - { -- yaffs_CheckpointDevice cp; -- __u32 nBytes; -- __u32 nBlocks = (dev->internalEndBlock - dev->internalStartBlock + 1); -+ int reservedChunks; -+ int reservedBlocks = dev->param.n_reserved_blocks; -+ int checkpointBlocks; - -- int ok; -+ checkpointBlocks = yaffs_calc_checkpt_blocks_required(dev); - -- ok = (yaffs_CheckpointRead(dev, &cp, sizeof(cp)) == sizeof(cp)); -- if (!ok) -- return 0; -+ reservedChunks = ((reservedBlocks + checkpointBlocks) * dev->param.chunks_per_block); - -- if (cp.structType != sizeof(cp)) -- return 0; -+ return (dev->n_free_chunks > (reservedChunks + n_chunks)); -+} -+ -+static int yaffs_alloc_chunk(yaffs_dev_t *dev, int useReserve, -+ yaffs_block_info_t **blockUsedPtr) -+{ -+ int retVal; -+ yaffs_block_info_t *bi; -+ -+ if (dev->alloc_block < 0) { -+ /* Get next block to allocate off */ -+ dev->alloc_block = yaffs_find_alloc_block(dev); -+ dev->alloc_page = 0; -+ } - -+ if (!useReserve && !yaffs_check_alloc_available(dev, 1)) { -+ /* Not enough space to allocate unless we're allowed to use the reserve. */ -+ return -1; -+ } - -- yaffs_CheckpointDeviceToDevice(dev, &cp); -+ if (dev->n_erased_blocks < dev->param.n_reserved_blocks -+ && dev->alloc_page == 0) { -+ T(YAFFS_TRACE_ALLOCATE, (TSTR("Allocating reserve" TENDSTR))); -+ } - -- nBytes = nBlocks * sizeof(yaffs_BlockInfo); -+ /* Next page please.... */ -+ if (dev->alloc_block >= 0) { -+ bi = yaffs_get_block_info(dev, dev->alloc_block); - -- ok = (yaffs_CheckpointRead(dev, dev->blockInfo, nBytes) == nBytes); -+ retVal = (dev->alloc_block * dev->param.chunks_per_block) + -+ dev->alloc_page; -+ bi->pages_in_use++; -+ yaffs_set_chunk_bit(dev, dev->alloc_block, -+ dev->alloc_page); - -- if (!ok) -- return 0; -- nBytes = nBlocks * dev->chunkBitmapStride; -+ dev->alloc_page++; - -- ok = (yaffs_CheckpointRead(dev, dev->chunkBits, nBytes) == nBytes); -+ dev->n_free_chunks--; - -- return ok ? 1 : 0; --} -+ /* If the block is full set the state to full */ -+ if (dev->alloc_page >= dev->param.chunks_per_block) { -+ bi->block_state = YAFFS_BLOCK_STATE_FULL; -+ dev->alloc_block = -1; -+ } - --static void yaffs_ObjectToCheckpointObject(yaffs_CheckpointObject *cp, -- yaffs_Object *obj) --{ -+ if (blockUsedPtr) -+ *blockUsedPtr = bi; -+ -+ return retVal; -+ } - -- cp->objectId = obj->objectId; -- cp->parentId = (obj->parent) ? obj->parent->objectId : 0; -- cp->hdrChunk = obj->hdrChunk; -- cp->variantType = obj->variantType; -- cp->deleted = obj->deleted; -- cp->softDeleted = obj->softDeleted; -- cp->unlinked = obj->unlinked; -- cp->fake = obj->fake; -- cp->renameAllowed = obj->renameAllowed; -- cp->unlinkAllowed = obj->unlinkAllowed; -- cp->serial = obj->serial; -- cp->nDataChunks = obj->nDataChunks; -+ T(YAFFS_TRACE_ERROR, -+ (TSTR("!!!!!!!!! Allocator out !!!!!!!!!!!!!!!!!" TENDSTR))); - -- if (obj->variantType == YAFFS_OBJECT_TYPE_FILE) -- cp->fileSizeOrEquivalentObjectId = obj->variant.fileVariant.fileSize; -- else if (obj->variantType == YAFFS_OBJECT_TYPE_HARDLINK) -- cp->fileSizeOrEquivalentObjectId = obj->variant.hardLinkVariant.equivalentObjectId; -+ return -1; - } - --static int yaffs_CheckpointObjectToObject(yaffs_Object *obj, yaffs_CheckpointObject *cp) -+static int yaffs_get_erased_chunks(yaffs_dev_t *dev) - { -+ int n; - -- yaffs_Object *parent; -+ n = dev->n_erased_blocks * dev->param.chunks_per_block; - -- if (obj->variantType != cp->variantType) { -- T(YAFFS_TRACE_ERROR, (TSTR("Checkpoint read object %d type %d " -- TCONT("chunk %d does not match existing object type %d") -- TENDSTR), cp->objectId, cp->variantType, cp->hdrChunk, -- obj->variantType)); -- return 0; -- } -+ if (dev->alloc_block > 0) -+ n += (dev->param.chunks_per_block - dev->alloc_page); - -- obj->objectId = cp->objectId; -+ return n; - -- if (cp->parentId) -- parent = yaffs_FindOrCreateObjectByNumber( -- obj->myDev, -- cp->parentId, -- YAFFS_OBJECT_TYPE_DIRECTORY); -- else -- parent = NULL; -+} - -- if (parent) { -- if (parent->variantType != YAFFS_OBJECT_TYPE_DIRECTORY) { -- T(YAFFS_TRACE_ALWAYS, (TSTR("Checkpoint read object %d parent %d type %d" -- TCONT(" chunk %d Parent type, %d, not directory") -- TENDSTR), -- cp->objectId, cp->parentId, cp->variantType, -- cp->hdrChunk, parent->variantType)); -- return 0; -+/* -+ * yaffs_skip_rest_of_block() skips over the rest of the allocation block -+ * if we don't want to write to it. -+ */ -+void yaffs_skip_rest_of_block(yaffs_dev_t *dev) -+{ -+ if(dev->alloc_block > 0){ -+ yaffs_block_info_t *bi = yaffs_get_block_info(dev, dev->alloc_block); -+ if(bi->block_state == YAFFS_BLOCK_STATE_ALLOCATING){ -+ bi->block_state = YAFFS_BLOCK_STATE_FULL; -+ dev->alloc_block = -1; - } -- yaffs_AddObjectToDirectory(parent, obj); - } -- -- obj->hdrChunk = cp->hdrChunk; -- obj->variantType = cp->variantType; -- obj->deleted = cp->deleted; -- obj->softDeleted = cp->softDeleted; -- obj->unlinked = cp->unlinked; -- obj->fake = cp->fake; -- obj->renameAllowed = cp->renameAllowed; -- obj->unlinkAllowed = cp->unlinkAllowed; -- obj->serial = cp->serial; -- obj->nDataChunks = cp->nDataChunks; -- -- if (obj->variantType == YAFFS_OBJECT_TYPE_FILE) -- obj->variant.fileVariant.fileSize = cp->fileSizeOrEquivalentObjectId; -- else if (obj->variantType == YAFFS_OBJECT_TYPE_HARDLINK) -- obj->variant.hardLinkVariant.equivalentObjectId = cp->fileSizeOrEquivalentObjectId; -- -- if (obj->hdrChunk > 0) -- obj->lazyLoaded = 1; -- return 1; - } - - -- --static int yaffs_CheckpointTnodeWorker(yaffs_Object *in, yaffs_Tnode *tn, -- __u32 level, int chunkOffset) -+static int yaffs_gc_block(yaffs_dev_t *dev, int block, -+ int wholeBlock) - { -+ int oldChunk; -+ int newChunk; -+ int mark_flash; -+ int retVal = YAFFS_OK; - int i; -- yaffs_Device *dev = in->myDev; -- int ok = 1; -- int tnodeSize = (dev->tnodeWidth * YAFFS_NTNODES_LEVEL0)/8; -- -- if (tnodeSize < sizeof(yaffs_Tnode)) -- tnodeSize = sizeof(yaffs_Tnode); -+ int isCheckpointBlock; -+ int matchingChunk; -+ int maxCopies; - -+ int chunksBefore = yaffs_get_erased_chunks(dev); -+ int chunksAfter; - -- if (tn) { -- if (level > 0) { -+ yaffs_ext_tags tags; - -- for (i = 0; i < YAFFS_NTNODES_INTERNAL && ok; i++) { -- if (tn->internal[i]) { -- ok = yaffs_CheckpointTnodeWorker(in, -- tn->internal[i], -- level - 1, -- (chunkOffset<<YAFFS_TNODES_INTERNAL_BITS) + i); -- } -- } -- } else if (level == 0) { -- __u32 baseOffset = chunkOffset << YAFFS_TNODES_LEVEL0_BITS; -- ok = (yaffs_CheckpointWrite(dev, &baseOffset, sizeof(baseOffset)) == sizeof(baseOffset)); -- if (ok) -- ok = (yaffs_CheckpointWrite(dev, tn, tnodeSize) == tnodeSize); -- } -- } -+ yaffs_block_info_t *bi = yaffs_get_block_info(dev, block); - -- return ok; -+ yaffs_obj_t *object; - --} -+ isCheckpointBlock = (bi->block_state == YAFFS_BLOCK_STATE_CHECKPOINT); - --static int yaffs_WriteCheckpointTnodes(yaffs_Object *obj) --{ -- __u32 endMarker = ~0; -- int ok = 1; - -- if (obj->variantType == YAFFS_OBJECT_TYPE_FILE) { -- ok = yaffs_CheckpointTnodeWorker(obj, -- obj->variant.fileVariant.top, -- obj->variant.fileVariant.topLevel, -- 0); -- if (ok) -- ok = (yaffs_CheckpointWrite(obj->myDev, &endMarker, sizeof(endMarker)) == -- sizeof(endMarker)); -- } -+ T(YAFFS_TRACE_TRACING, -+ (TSTR("Collecting block %d, in use %d, shrink %d, wholeBlock %d" TENDSTR), -+ block, -+ bi->pages_in_use, -+ bi->has_shrink_hdr, -+ wholeBlock)); - -- return ok ? 1 : 0; --} -+ /*yaffs_verify_free_chunks(dev); */ - --static int yaffs_ReadCheckpointTnodes(yaffs_Object *obj) --{ -- __u32 baseChunk; -- int ok = 1; -- yaffs_Device *dev = obj->myDev; -- yaffs_FileStructure *fileStructPtr = &obj->variant.fileVariant; -- yaffs_Tnode *tn; -- int nread = 0; -- int tnodeSize = (dev->tnodeWidth * YAFFS_NTNODES_LEVEL0)/8; -+ if(bi->block_state == YAFFS_BLOCK_STATE_FULL) -+ bi->block_state = YAFFS_BLOCK_STATE_COLLECTING; -+ -+ bi->has_shrink_hdr = 0; /* clear the flag so that the block can erase */ - -- if (tnodeSize < sizeof(yaffs_Tnode)) -- tnodeSize = sizeof(yaffs_Tnode); -+ dev->gc_disable = 1; - -- ok = (yaffs_CheckpointRead(dev, &baseChunk, sizeof(baseChunk)) == sizeof(baseChunk)); -+ if (isCheckpointBlock || -+ !yaffs_still_some_chunks(dev, block)) { -+ T(YAFFS_TRACE_TRACING, -+ (TSTR -+ ("Collecting block %d that has no chunks in use" TENDSTR), -+ block)); -+ yaffs_block_became_dirty(dev, block); -+ } else { - -- while (ok && (~baseChunk)) { -- nread++; -- /* Read level 0 tnode */ -+ __u8 *buffer = yaffs_get_temp_buffer(dev, __LINE__); - -+ yaffs_verify_blk(dev, bi, block); - -- tn = yaffs_GetTnodeRaw(dev); -- if (tn) -- ok = (yaffs_CheckpointRead(dev, tn, tnodeSize) == tnodeSize); -- else -- ok = 0; -+ maxCopies = (wholeBlock) ? dev->param.chunks_per_block : 5; -+ oldChunk = block * dev->param.chunks_per_block + dev->gc_chunk; - -- if (tn && ok) -- ok = yaffs_AddOrFindLevel0Tnode(dev, -- fileStructPtr, -- baseChunk, -- tn) ? 1 : 0; -+ for (/* init already done */; -+ retVal == YAFFS_OK && -+ dev->gc_chunk < dev->param.chunks_per_block && -+ (bi->block_state == YAFFS_BLOCK_STATE_COLLECTING) && -+ maxCopies > 0; -+ dev->gc_chunk++, oldChunk++) { -+ if (yaffs_check_chunk_bit(dev, block, dev->gc_chunk)) { - -- if (ok) -- ok = (yaffs_CheckpointRead(dev, &baseChunk, sizeof(baseChunk)) == sizeof(baseChunk)); -+ /* This page is in use and might need to be copied off */ - -- } -+ maxCopies--; - -- T(YAFFS_TRACE_CHECKPOINT, ( -- TSTR("Checkpoint read tnodes %d records, last %d. ok %d" TENDSTR), -- nread, baseChunk, ok)); -+ mark_flash = 1; - -- return ok ? 1 : 0; --} -+ yaffs_init_tags(&tags); - -+ yaffs_rd_chunk_tags_nand(dev, oldChunk, -+ buffer, &tags); - --static int yaffs_WriteCheckpointObjects(yaffs_Device *dev) --{ -- yaffs_Object *obj; -- yaffs_CheckpointObject cp; -- int i; -- int ok = 1; -- struct ylist_head *lh; -+ object = -+ yaffs_find_by_number(dev, -+ tags.obj_id); - -+ T(YAFFS_TRACE_GC_DETAIL, -+ (TSTR -+ ("Collecting chunk in block %d, %d %d %d " TENDSTR), -+ dev->gc_chunk, tags.obj_id, tags.chunk_id, -+ tags.n_bytes)); - -- /* Iterate through the objects in each hash entry, -- * dumping them to the checkpointing stream. -- */ -+ if (object && !yaffs_skip_verification(dev)) { -+ if (tags.chunk_id == 0) -+ matchingChunk = object->hdr_chunk; -+ else if (object->soft_del) -+ matchingChunk = oldChunk; /* Defeat the test */ -+ else -+ matchingChunk = yaffs_find_chunk_in_file(object, tags.chunk_id, NULL); - -- for (i = 0; ok && i < YAFFS_NOBJECT_BUCKETS; i++) { -- ylist_for_each(lh, &dev->objectBucket[i].list) { -- if (lh) { -- obj = ylist_entry(lh, yaffs_Object, hashLink); -- if (!obj->deferedFree) { -- yaffs_ObjectToCheckpointObject(&cp, obj); -- cp.structType = sizeof(cp); -- -- T(YAFFS_TRACE_CHECKPOINT, ( -- TSTR("Checkpoint write object %d parent %d type %d chunk %d obj addr %x" TENDSTR), -- cp.objectId, cp.parentId, cp.variantType, cp.hdrChunk, (unsigned) obj)); -+ if (oldChunk != matchingChunk) -+ T(YAFFS_TRACE_ERROR, -+ (TSTR("gc: page in gc mismatch: %d %d %d %d"TENDSTR), -+ oldChunk, matchingChunk, tags.obj_id, tags.chunk_id)); - -- ok = (yaffs_CheckpointWrite(dev, &cp, sizeof(cp)) == sizeof(cp)); -+ } - -- if (ok && obj->variantType == YAFFS_OBJECT_TYPE_FILE) -- ok = yaffs_WriteCheckpointTnodes(obj); -+ if (!object) { -+ T(YAFFS_TRACE_ERROR, -+ (TSTR -+ ("page %d in gc has no object: %d %d %d " -+ TENDSTR), oldChunk, -+ tags.obj_id, tags.chunk_id, tags.n_bytes)); - } -- } -- } -- } - -- /* Dump end of list */ -- memset(&cp, 0xFF, sizeof(yaffs_CheckpointObject)); -- cp.structType = sizeof(cp); -+ if (object && -+ object->deleted && -+ object->soft_del && -+ tags.chunk_id != 0) { -+ /* Data chunk in a soft deleted file, throw it away -+ * It's a soft deleted data chunk, -+ * No need to copy this, just forget about it and -+ * fix up the object. -+ */ -+ -+ /* Free chunks already includes softdeleted chunks. -+ * How ever this chunk is going to soon be really deleted -+ * which will increment free chunks. -+ * We have to decrement free chunks so this works out properly. -+ */ -+ dev->n_free_chunks--; -+ bi->soft_del_pages--; -+ -+ object->n_data_chunks--; - -- if (ok) -- ok = (yaffs_CheckpointWrite(dev, &cp, sizeof(cp)) == sizeof(cp)); -+ if (object->n_data_chunks <= 0) { -+ /* remeber to clean up the object */ -+ dev->gc_cleanup_list[dev->n_clean_ups] = -+ tags.obj_id; -+ dev->n_clean_ups++; -+ } -+ mark_flash = 0; -+ } else if (0) { -+ /* Todo object && object->deleted && object->n_data_chunks == 0 */ -+ /* Deleted object header with no data chunks. -+ * Can be discarded and the file deleted. -+ */ -+ object->hdr_chunk = 0; -+ yaffs_free_tnode(object->my_dev, -+ object->variant. -+ file_variant.top); -+ object->variant.file_variant.top = NULL; -+ yaffs_generic_obj_del(object); - -- return ok ? 1 : 0; --} -+ } else if (object) { -+ /* It's either a data chunk in a live file or -+ * an ObjectHeader, so we're interested in it. -+ * NB Need to keep the ObjectHeaders of deleted files -+ * until the whole file has been deleted off -+ */ -+ tags.serial_number++; - --static int yaffs_ReadCheckpointObjects(yaffs_Device *dev) --{ -- yaffs_Object *obj; -- yaffs_CheckpointObject cp; -- int ok = 1; -- int done = 0; -- yaffs_Object *hardList = NULL; -+ dev->n_gc_copies++; - -- while (ok && !done) { -- ok = (yaffs_CheckpointRead(dev, &cp, sizeof(cp)) == sizeof(cp)); -- if (cp.structType != sizeof(cp)) { -- T(YAFFS_TRACE_CHECKPOINT, (TSTR("struct size %d instead of %d ok %d"TENDSTR), -- cp.structType, sizeof(cp), ok)); -- ok = 0; -- } -- -- T(YAFFS_TRACE_CHECKPOINT, (TSTR("Checkpoint read object %d parent %d type %d chunk %d " TENDSTR), -- cp.objectId, cp.parentId, cp.variantType, cp.hdrChunk)); -- -- if (ok && cp.objectId == ~0) -- done = 1; -- else if (ok) { -- obj = yaffs_FindOrCreateObjectByNumber(dev, cp.objectId, cp.variantType); -- if (obj) { -- ok = yaffs_CheckpointObjectToObject(obj, &cp); -- if (!ok) -- break; -- if (obj->variantType == YAFFS_OBJECT_TYPE_FILE) { -- ok = yaffs_ReadCheckpointTnodes(obj); -- } else if (obj->variantType == YAFFS_OBJECT_TYPE_HARDLINK) { -- obj->hardLinks.next = -- (struct ylist_head *) hardList; -- hardList = obj; -- } -- } else -- ok = 0; -- } -- } -+ if (tags.chunk_id == 0) { -+ /* It is an object Id, -+ * We need to nuke the shrinkheader flags first -+ * Also need to clean up shadowing. -+ * We no longer want the shrinkHeader flag since its work is done -+ * and if it is left in place it will mess up scanning. -+ */ - -- if (ok) -- yaffs_HardlinkFixup(dev, hardList); -+ yaffs_obj_header *oh; -+ oh = (yaffs_obj_header *)buffer; - -- return ok ? 1 : 0; --} -+ oh->is_shrink = 0; -+ tags.extra_is_shrink = 0; - --static int yaffs_WriteCheckpointSum(yaffs_Device *dev) --{ -- __u32 checkpointSum; -- int ok; -+ oh->shadows_obj = 0; -+ oh->inband_shadowed_obj_id = 0; -+ tags.extra_shadows = 0; -+ -+ /* Update file size */ -+ if(object->variant_type == YAFFS_OBJECT_TYPE_FILE){ -+ oh->file_size = object->variant.file_variant.file_size; -+ tags.extra_length = oh->file_size; -+ } -+ -+ yaffs_verify_oh(object, oh, &tags, 1); -+ newChunk = -+ yaffs_write_new_chunk(dev,(__u8 *) oh, &tags, 1); -+ } else -+ newChunk = -+ yaffs_write_new_chunk(dev, buffer, &tags, 1); -+ -+ if (newChunk < 0) { -+ retVal = YAFFS_FAIL; -+ } else { - -- yaffs_GetCheckpointSum(dev, &checkpointSum); -+ /* Ok, now fix up the Tnodes etc. */ - -- ok = (yaffs_CheckpointWrite(dev, &checkpointSum, sizeof(checkpointSum)) == sizeof(checkpointSum)); -+ if (tags.chunk_id == 0) { -+ /* It's a header */ -+ object->hdr_chunk = newChunk; -+ object->serial = tags.serial_number; -+ } else { -+ /* It's a data chunk */ -+ int ok; -+ ok = yaffs_put_chunk_in_file -+ (object, -+ tags.chunk_id, -+ newChunk, 0); -+ } -+ } -+ } - -- if (!ok) -- return 0; -+ if (retVal == YAFFS_OK) -+ yaffs_chunk_del(dev, oldChunk, mark_flash, __LINE__); - -- return 1; --} -+ } -+ } - --static int yaffs_ReadCheckpointSum(yaffs_Device *dev) --{ -- __u32 checkpointSum0; -- __u32 checkpointSum1; -- int ok; -+ yaffs_release_temp_buffer(dev, buffer, __LINE__); - -- yaffs_GetCheckpointSum(dev, &checkpointSum0); - -- ok = (yaffs_CheckpointRead(dev, &checkpointSum1, sizeof(checkpointSum1)) == sizeof(checkpointSum1)); - -- if (!ok) -- return 0; -+ } - -- if (checkpointSum0 != checkpointSum1) -- return 0; -+ yaffs_verify_collected_blk(dev, bi, block); - -- return 1; --} - - --static int yaffs_WriteCheckpointData(yaffs_Device *dev) --{ -- int ok = 1; -+ if (bi->block_state == YAFFS_BLOCK_STATE_COLLECTING) { -+ /* -+ * The gc did not complete. Set block state back to FULL -+ * because checkpointing does not restore gc. -+ */ -+ bi->block_state = YAFFS_BLOCK_STATE_FULL; -+ } else { -+ /* The gc completed. */ -+ /* Do any required cleanups */ -+ for (i = 0; i < dev->n_clean_ups; i++) { -+ /* Time to delete the file too */ -+ object = -+ yaffs_find_by_number(dev, -+ dev->gc_cleanup_list[i]); -+ if (object) { -+ yaffs_free_tnode(dev, -+ object->variant.file_variant. -+ top); -+ object->variant.file_variant.top = NULL; -+ T(YAFFS_TRACE_GC, -+ (TSTR -+ ("yaffs: About to finally delete object %d" -+ TENDSTR), object->obj_id)); -+ yaffs_generic_obj_del(object); -+ object->my_dev->n_deleted_files--; -+ } - -- if (dev->skipCheckpointWrite || !dev->isYaffs2) { -- T(YAFFS_TRACE_CHECKPOINT, (TSTR("skipping checkpoint write" TENDSTR))); -- ok = 0; -- } -+ } - -- if (ok) -- ok = yaffs_CheckpointOpen(dev, 1); - -- if (ok) { -- T(YAFFS_TRACE_CHECKPOINT, (TSTR("write checkpoint validity" TENDSTR))); -- ok = yaffs_WriteCheckpointValidityMarker(dev, 1); -- } -- if (ok) { -- T(YAFFS_TRACE_CHECKPOINT, (TSTR("write checkpoint device" TENDSTR))); -- ok = yaffs_WriteCheckpointDevice(dev); -- } -- if (ok) { -- T(YAFFS_TRACE_CHECKPOINT, (TSTR("write checkpoint objects" TENDSTR))); -- ok = yaffs_WriteCheckpointObjects(dev); -- } -- if (ok) { -- T(YAFFS_TRACE_CHECKPOINT, (TSTR("write checkpoint validity" TENDSTR))); -- ok = yaffs_WriteCheckpointValidityMarker(dev, 0); -+ chunksAfter = yaffs_get_erased_chunks(dev); -+ if (chunksBefore >= chunksAfter) { -+ T(YAFFS_TRACE_GC, -+ (TSTR -+ ("gc did not increase free chunks before %d after %d" -+ TENDSTR), chunksBefore, chunksAfter)); -+ } -+ dev->gc_block = 0; -+ dev->gc_chunk = 0; -+ dev->n_clean_ups = 0; - } - -- if (ok) -- ok = yaffs_WriteCheckpointSum(dev); -- -- if (!yaffs_CheckpointClose(dev)) -- ok = 0; -- -- if (ok) -- dev->isCheckpointed = 1; -- else -- dev->isCheckpointed = 0; -+ dev->gc_disable = 0; - -- return dev->isCheckpointed; -+ return retVal; - } - --static int yaffs_ReadCheckpointData(yaffs_Device *dev) -+/* -+ * FindBlockForgarbageCollection is used to select the dirtiest block (or close enough) -+ * for garbage collection. -+ */ -+ -+static unsigned yaffs_find_gc_block(yaffs_dev_t *dev, -+ int aggressive, -+ int background) - { -- int ok = 1; -+ int i; -+ int iterations; -+ unsigned selected = 0; -+ int prioritised = 0; -+ int prioritisedExists = 0; -+ yaffs_block_info_t *bi; -+ int threshold; - -- if (dev->skipCheckpointRead || !dev->isYaffs2) { -- T(YAFFS_TRACE_CHECKPOINT, (TSTR("skipping checkpoint read" TENDSTR))); -- ok = 0; -- } -+ /* First let's see if we need to grab a prioritised block */ -+ if (dev->has_pending_prioritised_gc && !aggressive) { -+ dev->gc_dirtiest = 0; -+ bi = dev->block_info; -+ for (i = dev->internal_start_block; -+ i <= dev->internal_end_block && !selected; -+ i++) { -+ -+ if (bi->gc_prioritise) { -+ prioritisedExists = 1; -+ if (bi->block_state == YAFFS_BLOCK_STATE_FULL && -+ yaffs_block_ok_for_gc(dev, bi)) { -+ selected = i; -+ prioritised = 1; -+ } -+ } -+ bi++; -+ } - -- if (ok) -- ok = yaffs_CheckpointOpen(dev, 0); /* open for read */ -+ /* -+ * If there is a prioritised block and none was selected then -+ * this happened because there is at least one old dirty block gumming -+ * up the works. Let's gc the oldest dirty block. -+ */ - -- if (ok) { -- T(YAFFS_TRACE_CHECKPOINT, (TSTR("read checkpoint validity" TENDSTR))); -- ok = yaffs_ReadCheckpointValidityMarker(dev, 1); -- } -- if (ok) { -- T(YAFFS_TRACE_CHECKPOINT, (TSTR("read checkpoint device" TENDSTR))); -- ok = yaffs_ReadCheckpointDevice(dev); -- } -- if (ok) { -- T(YAFFS_TRACE_CHECKPOINT, (TSTR("read checkpoint objects" TENDSTR))); -- ok = yaffs_ReadCheckpointObjects(dev); -- } -- if (ok) { -- T(YAFFS_TRACE_CHECKPOINT, (TSTR("read checkpoint validity" TENDSTR))); -- ok = yaffs_ReadCheckpointValidityMarker(dev, 0); -- } -+ if(prioritisedExists && -+ !selected && -+ dev->oldest_dirty_block > 0) -+ selected = dev->oldest_dirty_block; - -- if (ok) { -- ok = yaffs_ReadCheckpointSum(dev); -- T(YAFFS_TRACE_CHECKPOINT, (TSTR("read checkpoint checksum %d" TENDSTR), ok)); -+ if (!prioritisedExists) /* None found, so we can clear this */ -+ dev->has_pending_prioritised_gc = 0; - } - -- if (!yaffs_CheckpointClose(dev)) -- ok = 0; -- -- if (ok) -- dev->isCheckpointed = 1; -- else -- dev->isCheckpointed = 0; -- -- return ok ? 1 : 0; -+ /* If we're doing aggressive GC then we are happy to take a less-dirty block, and -+ * search harder. -+ * else (we're doing a leasurely gc), then we only bother to do this if the -+ * block has only a few pages in use. -+ */ - --} -+ if (!selected){ -+ int pagesUsed; -+ int nBlocks = dev->internal_end_block - dev->internal_start_block + 1; -+ if (aggressive){ -+ threshold = dev->param.chunks_per_block; -+ iterations = nBlocks; -+ } else { -+ int maxThreshold; - --static void yaffs_InvalidateCheckpoint(yaffs_Device *dev) --{ -- if (dev->isCheckpointed || -- dev->blocksInCheckpoint > 0) { -- dev->isCheckpointed = 0; -- yaffs_CheckpointInvalidateStream(dev); -- if (dev->superBlock && dev->markSuperBlockDirty) -- dev->markSuperBlockDirty(dev->superBlock); -- } --} -+ if(background) -+ maxThreshold = dev->param.chunks_per_block/2; -+ else -+ maxThreshold = dev->param.chunks_per_block/8; - -+ if(maxThreshold < YAFFS_GC_PASSIVE_THRESHOLD) -+ maxThreshold = YAFFS_GC_PASSIVE_THRESHOLD; - --int yaffs_CheckpointSave(yaffs_Device *dev) --{ -+ threshold = background ? -+ (dev->gc_not_done + 2) * 2 : 0; -+ if(threshold <YAFFS_GC_PASSIVE_THRESHOLD) -+ threshold = YAFFS_GC_PASSIVE_THRESHOLD; -+ if(threshold > maxThreshold) -+ threshold = maxThreshold; - -- T(YAFFS_TRACE_CHECKPOINT, (TSTR("save entry: isCheckpointed %d"TENDSTR), dev->isCheckpointed)); -+ iterations = nBlocks / 16 + 1; -+ if (iterations > 100) -+ iterations = 100; -+ } - -- yaffs_VerifyObjects(dev); -- yaffs_VerifyBlocks(dev); -- yaffs_VerifyFreeChunks(dev); -+ for (i = 0; -+ i < iterations && -+ (dev->gc_dirtiest < 1 || -+ dev->gc_pages_in_use > YAFFS_GC_GOOD_ENOUGH); -+ i++) { -+ dev->gc_block_finder++; -+ if (dev->gc_block_finder < dev->internal_start_block || -+ dev->gc_block_finder > dev->internal_end_block) -+ dev->gc_block_finder = dev->internal_start_block; - -- if (!dev->isCheckpointed) { -- yaffs_InvalidateCheckpoint(dev); -- yaffs_WriteCheckpointData(dev); -- } -+ bi = yaffs_get_block_info(dev, dev->gc_block_finder); - -- T(YAFFS_TRACE_ALWAYS, (TSTR("save exit: isCheckpointed %d"TENDSTR), dev->isCheckpointed)); -+ pagesUsed = bi->pages_in_use - bi->soft_del_pages; - -- return dev->isCheckpointed; --} -+ if (bi->block_state == YAFFS_BLOCK_STATE_FULL && -+ pagesUsed < dev->param.chunks_per_block && -+ (dev->gc_dirtiest < 1 || pagesUsed < dev->gc_pages_in_use) && -+ yaffs_block_ok_for_gc(dev, bi)) { -+ dev->gc_dirtiest = dev->gc_block_finder; -+ dev->gc_pages_in_use = pagesUsed; -+ } -+ } - --int yaffs_CheckpointRestore(yaffs_Device *dev) --{ -- int retval; -- T(YAFFS_TRACE_CHECKPOINT, (TSTR("restore entry: isCheckpointed %d"TENDSTR), dev->isCheckpointed)); -+ if(dev->gc_dirtiest > 0 && dev->gc_pages_in_use <= threshold) -+ selected = dev->gc_dirtiest; -+ } - -- retval = yaffs_ReadCheckpointData(dev); -+ /* -+ * If nothing has been selected for a while, try selecting the oldest dirty -+ * because that's gumming up the works. -+ */ - -- if (dev->isCheckpointed) { -- yaffs_VerifyObjects(dev); -- yaffs_VerifyBlocks(dev); -- yaffs_VerifyFreeChunks(dev); -+ if(!selected && dev->param.is_yaffs2 && -+ dev->gc_not_done >= ( background ? 10 : 20)){ -+ yaffs2_find_oldest_dirty_seq(dev); -+ if(dev->oldest_dirty_block > 0) { -+ selected = dev->oldest_dirty_block; -+ dev->gc_dirtiest = selected; -+ dev->oldest_dirty_gc_count++; -+ bi = yaffs_get_block_info(dev, selected); -+ dev->gc_pages_in_use = bi->pages_in_use - bi->soft_del_pages; -+ } else -+ dev->gc_not_done = 0; - } - -- T(YAFFS_TRACE_CHECKPOINT, (TSTR("restore exit: isCheckpointed %d"TENDSTR), dev->isCheckpointed)); -+ if(selected){ -+ T(YAFFS_TRACE_GC, -+ (TSTR("GC Selected block %d with %d free, prioritised:%d" TENDSTR), -+ selected, -+ dev->param.chunks_per_block - dev->gc_pages_in_use, -+ prioritised)); -+ -+ dev->n_gc_blocks++; -+ if(background) -+ dev->bg_gcs++; -+ -+ dev->gc_dirtiest = 0; -+ dev->gc_pages_in_use = 0; -+ dev->gc_not_done = 0; -+ if(dev->refresh_skip > 0) -+ dev->refresh_skip--; -+ } else{ -+ dev->gc_not_done++; -+ T(YAFFS_TRACE_GC, -+ (TSTR("GC none: finder %d skip %d threshold %d dirtiest %d using %d oldest %d%s" TENDSTR), -+ dev->gc_block_finder, dev->gc_not_done, -+ threshold, -+ dev->gc_dirtiest, dev->gc_pages_in_use, -+ dev->oldest_dirty_block, -+ background ? " bg" : "")); -+ } - -- return retval; -+ return selected; - } - --/*--------------------- File read/write ------------------------ -- * Read and write have very similar structures. -- * In general the read/write has three parts to it -- * An incomplete chunk to start with (if the read/write is not chunk-aligned) -- * Some complete chunks -- * An incomplete chunk to end off with -+/* New garbage collector -+ * If we're very low on erased blocks then we do aggressive garbage collection -+ * otherwise we do "leasurely" garbage collection. -+ * Aggressive gc looks further (whole array) and will accept less dirty blocks. -+ * Passive gc only inspects smaller areas and will only accept more dirty blocks. - * -- * Curve-balls: the first chunk might also be the last chunk. -+ * The idea is to help clear out space in a more spread-out manner. -+ * Dunno if it really does anything useful. - */ -- --int yaffs_ReadDataFromFile(yaffs_Object *in, __u8 *buffer, loff_t offset, -- int nBytes) -+static int yaffs_check_gc(yaffs_dev_t *dev, int background) - { -+ int aggressive = 0; -+ int gcOk = YAFFS_OK; -+ int maxTries = 0; -+ int minErased; -+ int erasedChunks; -+ int checkpointBlockAdjust; - -- int chunk; -- __u32 start; -- int nToCopy; -- int n = nBytes; -- int nDone = 0; -- yaffs_ChunkCache *cache; -- -- yaffs_Device *dev; -- -- dev = in->myDev; -- -- while (n > 0) { -- /* chunk = offset / dev->nDataBytesPerChunk + 1; */ -- /* start = offset % dev->nDataBytesPerChunk; */ -- yaffs_AddrToChunk(dev, offset, &chunk, &start); -- chunk++; -- -- /* OK now check for the curveball where the start and end are in -- * the same chunk. -- */ -- if ((start + n) < dev->nDataBytesPerChunk) -- nToCopy = n; -- else -- nToCopy = dev->nDataBytesPerChunk - start; -- -- cache = yaffs_FindChunkCache(in, chunk); -- -- /* If the chunk is already in the cache or it is less than a whole chunk -- * or we're using inband tags then use the cache (if there is caching) -- * else bypass the cache. -- */ -- if (cache || nToCopy != dev->nDataBytesPerChunk || dev->inbandTags) { -- if (dev->nShortOpCaches > 0) { -- -- /* If we can't find the data in the cache, then load it up. */ -+ if(dev->param.gc_control && -+ (dev->param.gc_control(dev) & 1) == 0) -+ return YAFFS_OK; - -- if (!cache) { -- cache = yaffs_GrabChunkCache(in->myDev); -- cache->object = in; -- cache->chunkId = chunk; -- cache->dirty = 0; -- cache->locked = 0; -- yaffs_ReadChunkDataFromObject(in, chunk, -- cache-> -- data); -- cache->nBytes = 0; -- } -+ if (dev->gc_disable) { -+ /* Bail out so we don't get recursive gc */ -+ return YAFFS_OK; -+ } - -- yaffs_UseChunkCache(dev, cache, 0); -+ /* This loop should pass the first time. -+ * We'll only see looping here if the collection does not increase space. -+ */ - -- cache->locked = 1; -+ do { -+ maxTries++; - -+ checkpointBlockAdjust = yaffs_calc_checkpt_blocks_required(dev); - -- memcpy(buffer, &cache->data[start], nToCopy); -+ minErased = dev->param.n_reserved_blocks + checkpointBlockAdjust + 1; -+ erasedChunks = dev->n_erased_blocks * dev->param.chunks_per_block; - -- cache->locked = 0; -- } else { -- /* Read into the local buffer then copy..*/ -+ /* If we need a block soon then do aggressive gc.*/ -+ if (dev->n_erased_blocks < minErased) -+ aggressive = 1; -+ else { -+ if(!background && erasedChunks > (dev->n_free_chunks / 4)) -+ break; - -- __u8 *localBuffer = -- yaffs_GetTempBuffer(dev, __LINE__); -- yaffs_ReadChunkDataFromObject(in, chunk, -- localBuffer); -+ if(dev->gc_skip > 20) -+ dev->gc_skip = 20; -+ if(erasedChunks < dev->n_free_chunks/2 || -+ dev->gc_skip < 1 || -+ background) -+ aggressive = 0; -+ else { -+ dev->gc_skip--; -+ break; -+ } -+ } - -- memcpy(buffer, &localBuffer[start], nToCopy); -+ dev->gc_skip = 5; - -+ /* If we don't already have a block being gc'd then see if we should start another */ - -- yaffs_ReleaseTempBuffer(dev, localBuffer, -- __LINE__); -- } -+ if (dev->gc_block < 1 && !aggressive) { -+ dev->gc_block = yaffs2_find_refresh_block(dev); -+ dev->gc_chunk = 0; -+ dev->n_clean_ups=0; -+ } -+ if (dev->gc_block < 1) { -+ dev->gc_block = yaffs_find_gc_block(dev, aggressive, background); -+ dev->gc_chunk = 0; -+ dev->n_clean_ups=0; -+ } - -- } else { -+ if (dev->gc_block > 0) { -+ dev->all_gcs++; -+ if (!aggressive) -+ dev->passive_gc_count++; - -- /* A full chunk. Read directly into the supplied buffer. */ -- yaffs_ReadChunkDataFromObject(in, chunk, buffer); -+ T(YAFFS_TRACE_GC, -+ (TSTR -+ ("yaffs: GC erasedBlocks %d aggressive %d" TENDSTR), -+ dev->n_erased_blocks, aggressive)); - -+ gcOk = yaffs_gc_block(dev, dev->gc_block, aggressive); - } - -- n -= nToCopy; -- offset += nToCopy; -- buffer += nToCopy; -- nDone += nToCopy; -- -- } -+ if (dev->n_erased_blocks < (dev->param.n_reserved_blocks) && dev->gc_block > 0) { -+ T(YAFFS_TRACE_GC, -+ (TSTR -+ ("yaffs: GC !!!no reclaim!!! erasedBlocks %d after try %d block %d" -+ TENDSTR), dev->n_erased_blocks, maxTries, dev->gc_block)); -+ } -+ } while ((dev->n_erased_blocks < dev->param.n_reserved_blocks) && -+ (dev->gc_block > 0) && -+ (maxTries < 2)); - -- return nDone; -+ return aggressive ? gcOk : YAFFS_OK; - } - --int yaffs_WriteDataToFile(yaffs_Object *in, const __u8 *buffer, loff_t offset, -- int nBytes, int writeThrough) -+/* -+ * yaffs_bg_gc() -+ * Garbage collects. Intended to be called from a background thread. -+ * Returns non-zero if at least half the free chunks are erased. -+ */ -+int yaffs_bg_gc(yaffs_dev_t *dev, unsigned urgency) - { -+ int erasedChunks = dev->n_erased_blocks * dev->param.chunks_per_block; - -- int chunk; -- __u32 start; -- int nToCopy; -- int n = nBytes; -- int nDone = 0; -- int nToWriteBack; -- int startOfWrite = offset; -- int chunkWritten = 0; -- __u32 nBytesRead; -- __u32 chunkStart; -+ T(YAFFS_TRACE_BACKGROUND, (TSTR("Background gc %u" TENDSTR),urgency)); - -- yaffs_Device *dev; -+ yaffs_check_gc(dev, 1); -+ return erasedChunks > dev->n_free_chunks/2; -+} - -- dev = in->myDev; -+/*------------------------- TAGS --------------------------------*/ - -- while (n > 0 && chunkWritten >= 0) { -- /* chunk = offset / dev->nDataBytesPerChunk + 1; */ -- /* start = offset % dev->nDataBytesPerChunk; */ -- yaffs_AddrToChunk(dev, offset, &chunk, &start); -+static int yaffs_tags_match(const yaffs_ext_tags *tags, int obj_id, -+ int chunkInObject) -+{ -+ return (tags->chunk_id == chunkInObject && -+ tags->obj_id == obj_id && !tags->is_deleted) ? 1 : 0; - -- if (chunk * dev->nDataBytesPerChunk + start != offset || -- start >= dev->nDataBytesPerChunk) { -- T(YAFFS_TRACE_ERROR, ( -- TSTR("AddrToChunk of offset %d gives chunk %d start %d" -- TENDSTR), -- (int)offset, chunk, start)); -- } -- chunk++; -+} - -- /* OK now check for the curveball where the start and end are in -- * the same chunk. -- */ - -- if ((start + n) < dev->nDataBytesPerChunk) { -- nToCopy = n; -+/*-------------------- Data file manipulation -----------------*/ - -- /* Now folks, to calculate how many bytes to write back.... -- * If we're overwriting and not writing to then end of file then -- * we need to write back as much as was there before. -- */ -+static int yaffs_find_chunk_in_file(yaffs_obj_t *in, int inode_chunk, -+ yaffs_ext_tags *tags) -+{ -+ /*Get the Tnode, then get the level 0 offset chunk offset */ -+ yaffs_tnode_t *tn; -+ int theChunk = -1; -+ yaffs_ext_tags localTags; -+ int retVal = -1; - -- chunkStart = ((chunk - 1) * dev->nDataBytesPerChunk); -+ yaffs_dev_t *dev = in->my_dev; - -- if (chunkStart > in->variant.fileVariant.fileSize) -- nBytesRead = 0; /* Past end of file */ -- else -- nBytesRead = in->variant.fileVariant.fileSize - chunkStart; -+ if (!tags) { -+ /* Passed a NULL, so use our own tags space */ -+ tags = &localTags; -+ } - -- if (nBytesRead > dev->nDataBytesPerChunk) -- nBytesRead = dev->nDataBytesPerChunk; -+ tn = yaffs_find_tnode_0(dev, &in->variant.file_variant, inode_chunk); - -- nToWriteBack = -- (nBytesRead > -- (start + n)) ? nBytesRead : (start + n); -+ if (tn) { -+ theChunk = yaffs_get_group_base(dev, tn, inode_chunk); - -- if (nToWriteBack < 0 || nToWriteBack > dev->nDataBytesPerChunk) -- YBUG(); -+ retVal = -+ yaffs_find_chunk_in_group(dev, theChunk, tags, in->obj_id, -+ inode_chunk); -+ } -+ return retVal; -+} - -- } else { -- nToCopy = dev->nDataBytesPerChunk - start; -- nToWriteBack = dev->nDataBytesPerChunk; -- } -+static int yaffs_find_del_file_chunk(yaffs_obj_t *in, int inode_chunk, -+ yaffs_ext_tags *tags) -+{ -+ /* Get the Tnode, then get the level 0 offset chunk offset */ -+ yaffs_tnode_t *tn; -+ int theChunk = -1; -+ yaffs_ext_tags localTags; - -- if (nToCopy != dev->nDataBytesPerChunk || dev->inbandTags) { -- /* An incomplete start or end chunk (or maybe both start and end chunk), -- * or we're using inband tags, so we want to use the cache buffers. -- */ -- if (dev->nShortOpCaches > 0) { -- yaffs_ChunkCache *cache; -- /* If we can't find the data in the cache, then load the cache */ -- cache = yaffs_FindChunkCache(in, chunk); -+ yaffs_dev_t *dev = in->my_dev; -+ int retVal = -1; - -- if (!cache -- && yaffs_CheckSpaceForAllocation(in-> -- myDev)) { -- cache = yaffs_GrabChunkCache(in->myDev); -- cache->object = in; -- cache->chunkId = chunk; -- cache->dirty = 0; -- cache->locked = 0; -- yaffs_ReadChunkDataFromObject(in, chunk, -- cache-> -- data); -- } else if (cache && -- !cache->dirty && -- !yaffs_CheckSpaceForAllocation(in->myDev)) { -- /* Drop the cache if it was a read cache item and -- * no space check has been made for it. -- */ -- cache = NULL; -- } -+ if (!tags) { -+ /* Passed a NULL, so use our own tags space */ -+ tags = &localTags; -+ } - -- if (cache) { -- yaffs_UseChunkCache(dev, cache, 1); -- cache->locked = 1; -+ tn = yaffs_find_tnode_0(dev, &in->variant.file_variant, inode_chunk); - -+ if (tn) { - -- memcpy(&cache->data[start], buffer, -- nToCopy); -+ theChunk = yaffs_get_group_base(dev, tn, inode_chunk); - -+ retVal = -+ yaffs_find_chunk_in_group(dev, theChunk, tags, in->obj_id, -+ inode_chunk); - -- cache->locked = 0; -- cache->nBytes = nToWriteBack; -+ /* Delete the entry in the filestructure (if found) */ -+ if (retVal != -1) -+ yaffs_load_tnode_0(dev, tn, inode_chunk, 0); -+ } - -- if (writeThrough) { -- chunkWritten = -- yaffs_WriteChunkDataToObject -- (cache->object, -- cache->chunkId, -- cache->data, cache->nBytes, -- 1); -- cache->dirty = 0; -- } -+ return retVal; -+} - -- } else { -- chunkWritten = -1; /* fail the write */ -- } -- } else { -- /* An incomplete start or end chunk (or maybe both start and end chunk) -- * Read into the local buffer then copy, then copy over and write back. -- */ - -- __u8 *localBuffer = -- yaffs_GetTempBuffer(dev, __LINE__); -+int yaffs_put_chunk_in_file(yaffs_obj_t *in, int inode_chunk, -+ int nand_chunk, int in_scan) -+{ -+ /* NB in_scan is zero unless scanning. -+ * For forward scanning, in_scan is > 0; -+ * for backward scanning in_scan is < 0 -+ * -+ * nand_chunk = 0 is a dummy insert to make sure the tnodes are there. -+ */ - -- yaffs_ReadChunkDataFromObject(in, chunk, -- localBuffer); -+ yaffs_tnode_t *tn; -+ yaffs_dev_t *dev = in->my_dev; -+ int existingChunk; -+ yaffs_ext_tags existingTags; -+ yaffs_ext_tags newTags; -+ unsigned existingSerial, newSerial; - -+ if (in->variant_type != YAFFS_OBJECT_TYPE_FILE) { -+ /* Just ignore an attempt at putting a chunk into a non-file during scanning -+ * If it is not during Scanning then something went wrong! -+ */ -+ if (!in_scan) { -+ T(YAFFS_TRACE_ERROR, -+ (TSTR -+ ("yaffs tragedy:attempt to put data chunk into a non-file" -+ TENDSTR))); -+ YBUG(); -+ } - -+ yaffs_chunk_del(dev, nand_chunk, 1, __LINE__); -+ return YAFFS_OK; -+ } - -- memcpy(&localBuffer[start], buffer, nToCopy); -+ tn = yaffs_add_find_tnode_0(dev, -+ &in->variant.file_variant, -+ inode_chunk, -+ NULL); -+ if (!tn) -+ return YAFFS_FAIL; -+ -+ if(!nand_chunk) -+ /* Dummy insert, bail now */ -+ return YAFFS_OK; - -- chunkWritten = -- yaffs_WriteChunkDataToObject(in, chunk, -- localBuffer, -- nToWriteBack, -- 0); -+ existingChunk = yaffs_get_group_base(dev, tn, inode_chunk); - -- yaffs_ReleaseTempBuffer(dev, localBuffer, -- __LINE__); -+ if (in_scan != 0) { -+ /* If we're scanning then we need to test for duplicates -+ * NB This does not need to be efficient since it should only ever -+ * happen when the power fails during a write, then only one -+ * chunk should ever be affected. -+ * -+ * Correction for YAFFS2: This could happen quite a lot and we need to think about efficiency! TODO -+ * Update: For backward scanning we don't need to re-read tags so this is quite cheap. -+ */ -+ -+ if (existingChunk > 0) { -+ /* NB Right now existing chunk will not be real chunk_id if the chunk group size > 1 -+ * thus we have to do a FindChunkInFile to get the real chunk id. -+ * -+ * We have a duplicate now we need to decide which one to use: -+ * -+ * Backwards scanning YAFFS2: The old one is what we use, dump the new one. -+ * Forward scanning YAFFS2: The new one is what we use, dump the old one. -+ * YAFFS1: Get both sets of tags and compare serial numbers. -+ */ -+ -+ if (in_scan > 0) { -+ /* Only do this for forward scanning */ -+ yaffs_rd_chunk_tags_nand(dev, -+ nand_chunk, -+ NULL, &newTags); - -+ /* Do a proper find */ -+ existingChunk = -+ yaffs_find_chunk_in_file(in, inode_chunk, -+ &existingTags); - } - -- } else { -- /* A full chunk. Write directly from the supplied buffer. */ -+ if (existingChunk <= 0) { -+ /*Hoosterman - how did this happen? */ - -+ T(YAFFS_TRACE_ERROR, -+ (TSTR -+ ("yaffs tragedy: existing chunk < 0 in scan" -+ TENDSTR))); - -+ } - -- chunkWritten = -- yaffs_WriteChunkDataToObject(in, chunk, buffer, -- dev->nDataBytesPerChunk, -- 0); -+ /* NB The deleted flags should be false, otherwise the chunks will -+ * not be loaded during a scan -+ */ - -- /* Since we've overwritten the cached data, we better invalidate it. */ -- yaffs_InvalidateChunkCache(in, chunk); -- } -+ if (in_scan > 0) { -+ newSerial = newTags.serial_number; -+ existingSerial = existingTags.serial_number; -+ } - -- if (chunkWritten >= 0) { -- n -= nToCopy; -- offset += nToCopy; -- buffer += nToCopy; -- nDone += nToCopy; -+ if ((in_scan > 0) && -+ (existingChunk <= 0 || -+ ((existingSerial + 1) & 3) == newSerial)) { -+ /* Forward scanning. -+ * Use new -+ * Delete the old one and drop through to update the tnode -+ */ -+ yaffs_chunk_del(dev, existingChunk, 1, -+ __LINE__); -+ } else { -+ /* Backward scanning or we want to use the existing one -+ * Use existing. -+ * Delete the new one and return early so that the tnode isn't changed -+ */ -+ yaffs_chunk_del(dev, nand_chunk, 1, -+ __LINE__); -+ return YAFFS_OK; -+ } - } - - } - -- /* Update file object */ -- -- if ((startOfWrite + nDone) > in->variant.fileVariant.fileSize) -- in->variant.fileVariant.fileSize = (startOfWrite + nDone); -+ if (existingChunk == 0) -+ in->n_data_chunks++; - -- in->dirty = 1; -+ yaffs_load_tnode_0(dev, tn, inode_chunk, nand_chunk); - -- return nDone; -+ return YAFFS_OK; - } - -+static int yaffs_rd_data_obj(yaffs_obj_t *in, int inode_chunk, -+ __u8 *buffer) -+{ -+ int nand_chunk = yaffs_find_chunk_in_file(in, inode_chunk, NULL); - --/* ---------------------- File resizing stuff ------------------ */ -+ if (nand_chunk >= 0) -+ return yaffs_rd_chunk_tags_nand(in->my_dev, nand_chunk, -+ buffer, NULL); -+ else { -+ T(YAFFS_TRACE_NANDACCESS, -+ (TSTR("Chunk %d not found zero instead" TENDSTR), -+ nand_chunk)); -+ /* get sane (zero) data if you read a hole */ -+ memset(buffer, 0, in->my_dev->data_bytes_per_chunk); -+ return 0; -+ } -+ -+} - --static void yaffs_PruneResizedChunks(yaffs_Object *in, int newSize) -+void yaffs_chunk_del(yaffs_dev_t *dev, int chunk_id, int mark_flash, int lyn) - { -+ int block; -+ int page; -+ yaffs_ext_tags tags; -+ yaffs_block_info_t *bi; - -- yaffs_Device *dev = in->myDev; -- int oldFileSize = in->variant.fileVariant.fileSize; -+ if (chunk_id <= 0) -+ return; - -- int lastDel = 1 + (oldFileSize - 1) / dev->nDataBytesPerChunk; -+ dev->n_deletions++; -+ block = chunk_id / dev->param.chunks_per_block; -+ page = chunk_id % dev->param.chunks_per_block; - -- int startDel = 1 + (newSize + dev->nDataBytesPerChunk - 1) / -- dev->nDataBytesPerChunk; -- int i; -- int chunkId; - -- /* Delete backwards so that we don't end up with holes if -- * power is lost part-way through the operation. -+ if (!yaffs_check_chunk_bit(dev, block, page)) -+ T(YAFFS_TRACE_VERIFY, -+ (TSTR("Deleting invalid chunk %d"TENDSTR), -+ chunk_id)); -+ -+ bi = yaffs_get_block_info(dev, block); -+ -+ yaffs2_update_oldest_dirty_seq(dev, block, bi); -+ -+ T(YAFFS_TRACE_DELETION, -+ (TSTR("line %d delete of chunk %d" TENDSTR), lyn, chunk_id)); -+ -+ if (!dev->param.is_yaffs2 && mark_flash && -+ bi->block_state != YAFFS_BLOCK_STATE_COLLECTING) { -+ -+ yaffs_init_tags(&tags); -+ -+ tags.is_deleted = 1; -+ -+ yaffs_wr_chunk_tags_nand(dev, chunk_id, NULL, &tags); -+ yaffs_handle_chunk_update(dev, chunk_id, &tags); -+ } else { -+ dev->n_unmarked_deletions++; -+ } -+ -+ /* Pull out of the management area. -+ * If the whole block became dirty, this will kick off an erasure. - */ -- for (i = lastDel; i >= startDel; i--) { -- /* NB this could be optimised somewhat, -- * eg. could retrieve the tags and write them without -- * using yaffs_DeleteChunk -- */ -+ if (bi->block_state == YAFFS_BLOCK_STATE_ALLOCATING || -+ bi->block_state == YAFFS_BLOCK_STATE_FULL || -+ bi->block_state == YAFFS_BLOCK_STATE_NEEDS_SCANNING || -+ bi->block_state == YAFFS_BLOCK_STATE_COLLECTING) { -+ dev->n_free_chunks++; - -- chunkId = yaffs_FindAndDeleteChunkInFile(in, i, NULL); -- if (chunkId > 0) { -- if (chunkId < -- (dev->internalStartBlock * dev->nChunksPerBlock) -- || chunkId >= -- ((dev->internalEndBlock + -- 1) * dev->nChunksPerBlock)) { -- T(YAFFS_TRACE_ALWAYS, -- (TSTR("Found daft chunkId %d for %d" TENDSTR), -- chunkId, i)); -- } else { -- in->nDataChunks--; -- yaffs_DeleteChunk(dev, chunkId, 1, __LINE__); -- } -+ yaffs_clear_chunk_bit(dev, block, page); -+ -+ bi->pages_in_use--; -+ -+ if (bi->pages_in_use == 0 && -+ !bi->has_shrink_hdr && -+ bi->block_state != YAFFS_BLOCK_STATE_ALLOCATING && -+ bi->block_state != YAFFS_BLOCK_STATE_NEEDS_SCANNING) { -+ yaffs_block_became_dirty(dev, block); - } -+ - } - - } - --int yaffs_ResizeFile(yaffs_Object *in, loff_t newSize) -+static int yaffs_wr_data_obj(yaffs_obj_t *in, int inode_chunk, -+ const __u8 *buffer, int n_bytes, -+ int useReserve) - { -+ /* Find old chunk Need to do this to get serial number -+ * Write new one and patch into tree. -+ * Invalidate old tags. -+ */ - -- int oldFileSize = in->variant.fileVariant.fileSize; -- __u32 newSizeOfPartialChunk; -- int newFullChunks; -+ int prevChunkId; -+ yaffs_ext_tags prevTags; - -- yaffs_Device *dev = in->myDev; -+ int newChunkId; -+ yaffs_ext_tags newTags; - -- yaffs_AddrToChunk(dev, newSize, &newFullChunks, &newSizeOfPartialChunk); -+ yaffs_dev_t *dev = in->my_dev; - -- yaffs_FlushFilesChunkCache(in); -- yaffs_InvalidateWholeChunkCache(in); -+ yaffs_check_gc(dev,0); - -- yaffs_CheckGarbageCollection(dev); -+ /* Get the previous chunk at this location in the file if it exists. -+ * If it does not exist then put a zero into the tree. This creates -+ * the tnode now, rather than later when it is harder to clean up. -+ */ -+ prevChunkId = yaffs_find_chunk_in_file(in, inode_chunk, &prevTags); -+ if(prevChunkId < 1 && -+ !yaffs_put_chunk_in_file(in, inode_chunk, 0, 0)) -+ return 0; - -- if (in->variantType != YAFFS_OBJECT_TYPE_FILE) -- return YAFFS_FAIL; -+ /* Set up new tags */ -+ yaffs_init_tags(&newTags); - -- if (newSize == oldFileSize) -- return YAFFS_OK; -+ newTags.chunk_id = inode_chunk; -+ newTags.obj_id = in->obj_id; -+ newTags.serial_number = -+ (prevChunkId > 0) ? prevTags.serial_number + 1 : 1; -+ newTags.n_bytes = n_bytes; - -- if (newSize < oldFileSize) { -+ if (n_bytes < 1 || n_bytes > dev->param.total_bytes_per_chunk) { -+ T(YAFFS_TRACE_ERROR, -+ (TSTR("Writing %d bytes to chunk!!!!!!!!!" TENDSTR), n_bytes)); -+ YBUG(); -+ } -+ -+ -+ newChunkId = -+ yaffs_write_new_chunk(dev, buffer, &newTags, -+ useReserve); - -- yaffs_PruneResizedChunks(in, newSize); -+ if (newChunkId > 0) { -+ yaffs_put_chunk_in_file(in, inode_chunk, newChunkId, 0); - -- if (newSizeOfPartialChunk != 0) { -- int lastChunk = 1 + newFullChunks; -+ if (prevChunkId > 0) -+ yaffs_chunk_del(dev, prevChunkId, 1, __LINE__); - -- __u8 *localBuffer = yaffs_GetTempBuffer(dev, __LINE__); -+ yaffs_verify_file_sane(in); -+ } -+ return newChunkId; - -- /* Got to read and rewrite the last chunk with its new size and zero pad */ -- yaffs_ReadChunkDataFromObject(in, lastChunk, -- localBuffer); -+} - -- memset(localBuffer + newSizeOfPartialChunk, 0, -- dev->nDataBytesPerChunk - newSizeOfPartialChunk); -+/* UpdateObjectHeader updates the header on NAND for an object. -+ * If name is not NULL, then that new name is used. -+ */ -+int yaffs_update_oh(yaffs_obj_t *in, const YCHAR *name, int force, -+ int is_shrink, int shadows, yaffs_xattr_mod *xmod) -+{ - -- yaffs_WriteChunkDataToObject(in, lastChunk, localBuffer, -- newSizeOfPartialChunk, 1); -+ yaffs_block_info_t *bi; - -- yaffs_ReleaseTempBuffer(dev, localBuffer, __LINE__); -- } -+ yaffs_dev_t *dev = in->my_dev; - -- in->variant.fileVariant.fileSize = newSize; -+ int prevChunkId; -+ int retVal = 0; -+ int result = 0; - -- yaffs_PruneFileStructure(dev, &in->variant.fileVariant); -- } else { -- /* newsSize > oldFileSize */ -- in->variant.fileVariant.fileSize = newSize; -- } -+ int newChunkId; -+ yaffs_ext_tags newTags; -+ yaffs_ext_tags oldTags; -+ const YCHAR *alias = NULL; - -+ __u8 *buffer = NULL; -+ YCHAR old_name[YAFFS_MAX_NAME_LENGTH + 1]; - -- /* Write a new object header. -- * show we've shrunk the file, if need be -- * Do this only if the file is not in the deleted directories. -- */ -- if (in->parent && -- in->parent->objectId != YAFFS_OBJECTID_UNLINKED && -- in->parent->objectId != YAFFS_OBJECTID_DELETED) -- yaffs_UpdateObjectHeader(in, NULL, 0, -- (newSize < oldFileSize) ? 1 : 0, 0); -+ yaffs_obj_header *oh = NULL; - -- return YAFFS_OK; --} -+ yaffs_strcpy(old_name, _Y("silly old name")); - --loff_t yaffs_GetFileSize(yaffs_Object *obj) --{ -- obj = yaffs_GetEquivalentObject(obj); - -- switch (obj->variantType) { -- case YAFFS_OBJECT_TYPE_FILE: -- return obj->variant.fileVariant.fileSize; -- case YAFFS_OBJECT_TYPE_SYMLINK: -- return yaffs_strlen(obj->variant.symLinkVariant.alias); -- default: -- return 0; -- } --} -+ if (!in->fake || -+ in == dev->root_dir || /* The root_dir should also be saved */ -+ force || xmod) { - -+ yaffs_check_gc(dev,0); -+ yaffs_check_obj_details_loaded(in); - -+ buffer = yaffs_get_temp_buffer(in->my_dev, __LINE__); -+ oh = (yaffs_obj_header *) buffer; -+ -+ prevChunkId = in->hdr_chunk; -+ -+ if (prevChunkId > 0) { -+ result = yaffs_rd_chunk_tags_nand(dev, prevChunkId, -+ buffer, &oldTags); -+ -+ yaffs_verify_oh(in, oh, &oldTags, 0); -+ -+ memcpy(old_name, oh->name, sizeof(oh->name)); -+ memset(buffer, 0xFF, sizeof(yaffs_obj_header)); -+ } else -+ memset(buffer, 0xFF, dev->data_bytes_per_chunk); -+ -+ oh->type = in->variant_type; -+ oh->yst_mode = in->yst_mode; -+ oh->shadows_obj = oh->inband_shadowed_obj_id = shadows; - --int yaffs_FlushFile(yaffs_Object *in, int updateTime) --{ -- int retVal; -- if (in->dirty) { -- yaffs_FlushFilesChunkCache(in); -- if (updateTime) { - #ifdef CONFIG_YAFFS_WINCE -- yfsd_WinFileTimeNow(in->win_mtime); -+ oh->win_atime[0] = in->win_atime[0]; -+ oh->win_ctime[0] = in->win_ctime[0]; -+ oh->win_mtime[0] = in->win_mtime[0]; -+ oh->win_atime[1] = in->win_atime[1]; -+ oh->win_ctime[1] = in->win_ctime[1]; -+ oh->win_mtime[1] = in->win_mtime[1]; - #else -+ oh->yst_uid = in->yst_uid; -+ oh->yst_gid = in->yst_gid; -+ oh->yst_atime = in->yst_atime; -+ oh->yst_mtime = in->yst_mtime; -+ oh->yst_ctime = in->yst_ctime; -+ oh->yst_rdev = in->yst_rdev; -+#endif -+ if (in->parent) -+ oh->parent_obj_id = in->parent->obj_id; -+ else -+ oh->parent_obj_id = 0; -+ -+ if (name && *name) { -+ memset(oh->name, 0, sizeof(oh->name)); -+ yaffs_load_oh_from_name(dev,oh->name,name); -+ } else if (prevChunkId > 0) -+ memcpy(oh->name, old_name, sizeof(oh->name)); -+ else -+ memset(oh->name, 0, sizeof(oh->name)); - -- in->yst_mtime = Y_CURRENT_TIME; -+ oh->is_shrink = is_shrink; - --#endif -+ switch (in->variant_type) { -+ case YAFFS_OBJECT_TYPE_UNKNOWN: -+ /* Should not happen */ -+ break; -+ case YAFFS_OBJECT_TYPE_FILE: -+ oh->file_size = -+ (oh->parent_obj_id == YAFFS_OBJECTID_DELETED -+ || oh->parent_obj_id == -+ YAFFS_OBJECTID_UNLINKED) ? 0 : in->variant. -+ file_variant.file_size; -+ break; -+ case YAFFS_OBJECT_TYPE_HARDLINK: -+ oh->equiv_id = -+ in->variant.hardlink_variant.equiv_id; -+ break; -+ case YAFFS_OBJECT_TYPE_SPECIAL: -+ /* Do nothing */ -+ break; -+ case YAFFS_OBJECT_TYPE_DIRECTORY: -+ /* Do nothing */ -+ break; -+ case YAFFS_OBJECT_TYPE_SYMLINK: -+ alias = in->variant.symlink_variant.alias; -+ if(!alias) -+ alias = _Y("no alias"); -+ yaffs_strncpy(oh->alias, -+ alias, -+ YAFFS_MAX_ALIAS_LENGTH); -+ oh->alias[YAFFS_MAX_ALIAS_LENGTH] = 0; -+ break; - } - -- retVal = (yaffs_UpdateObjectHeader(in, NULL, 0, 0, 0) >= -- 0) ? YAFFS_OK : YAFFS_FAIL; -- } else { -- retVal = YAFFS_OK; -- } -+ /* process any xattrib modifications */ -+ if(xmod) -+ yaffs_apply_xattrib_mod(in, (char *)buffer, xmod); - -- return retVal; - --} -+ /* Tags */ -+ yaffs_init_tags(&newTags); -+ in->serial++; -+ newTags.chunk_id = 0; -+ newTags.obj_id = in->obj_id; -+ newTags.serial_number = in->serial; - --static int yaffs_DoGenericObjectDeletion(yaffs_Object *in) --{ -+ /* Add extra info for file header */ - -- /* First off, invalidate the file's data in the cache, without flushing. */ -- yaffs_InvalidateWholeChunkCache(in); -+ newTags.extra_available = 1; -+ newTags.extra_parent_id = oh->parent_obj_id; -+ newTags.extra_length = oh->file_size; -+ newTags.extra_is_shrink = oh->is_shrink; -+ newTags.extra_equiv_id = oh->equiv_id; -+ newTags.extra_shadows = (oh->shadows_obj > 0) ? 1 : 0; -+ newTags.extra_obj_type = in->variant_type; - -- if (in->myDev->isYaffs2 && (in->parent != in->myDev->deletedDir)) { -- /* Move to the unlinked directory so we have a record that it was deleted. */ -- yaffs_ChangeObjectName(in, in->myDev->deletedDir, _Y("deleted"), 0, 0); -+ yaffs_verify_oh(in, oh, &newTags, 1); - -- } -+ /* Create new chunk in NAND */ -+ newChunkId = -+ yaffs_write_new_chunk(dev, buffer, &newTags, -+ (prevChunkId > 0) ? 1 : 0); - -- yaffs_RemoveObjectFromDirectory(in); -- yaffs_DeleteChunk(in->myDev, in->hdrChunk, 1, __LINE__); -- in->hdrChunk = 0; -+ if (newChunkId >= 0) { - -- yaffs_FreeObject(in); -- return YAFFS_OK; -+ in->hdr_chunk = newChunkId; - --} -+ if (prevChunkId > 0) { -+ yaffs_chunk_del(dev, prevChunkId, 1, -+ __LINE__); -+ } - --/* yaffs_DeleteFile deletes the whole file data -- * and the inode associated with the file. -- * It does not delete the links associated with the file. -- */ --static int yaffs_UnlinkFileIfNeeded(yaffs_Object *in) --{ -+ if (!yaffs_obj_cache_dirty(in)) -+ in->dirty = 0; - -- int retVal; -- int immediateDeletion = 0; -+ /* If this was a shrink, then mark the block that the chunk lives on */ -+ if (is_shrink) { -+ bi = yaffs_get_block_info(in->my_dev, -+ newChunkId / in->my_dev->param.chunks_per_block); -+ bi->has_shrink_hdr = 1; -+ } - --#ifdef __KERNEL__ -- if (!in->myInode) -- immediateDeletion = 1; --#else -- if (in->inUse <= 0) -- immediateDeletion = 1; --#endif -+ } -+ -+ retVal = newChunkId; - -- if (immediateDeletion) { -- retVal = -- yaffs_ChangeObjectName(in, in->myDev->deletedDir, -- _Y("deleted"), 0, 0); -- T(YAFFS_TRACE_TRACING, -- (TSTR("yaffs: immediate deletion of file %d" TENDSTR), -- in->objectId)); -- in->deleted = 1; -- in->myDev->nDeletedFiles++; -- if (1 || in->myDev->isYaffs2) -- yaffs_ResizeFile(in, 0); -- yaffs_SoftDeleteFile(in); -- } else { -- retVal = -- yaffs_ChangeObjectName(in, in->myDev->unlinkedDir, -- _Y("unlinked"), 0, 0); - } - -+ if (buffer) -+ yaffs_release_temp_buffer(dev, buffer, __LINE__); - - return retVal; - } - --int yaffs_DeleteFile(yaffs_Object *in) --{ -- int retVal = YAFFS_OK; -- int deleted = in->deleted; -- -- yaffs_ResizeFile(in, 0); -- -- if (in->nDataChunks > 0) { -- /* Use soft deletion if there is data in the file. -- * That won't be the case if it has been resized to zero. -- */ -- if (!in->unlinked) -- retVal = yaffs_UnlinkFileIfNeeded(in); -- -- if (retVal == YAFFS_OK && in->unlinked && !in->deleted) { -- in->deleted = 1; -- deleted = 1; -- in->myDev->nDeletedFiles++; -- yaffs_SoftDeleteFile(in); -- } -- return deleted ? YAFFS_OK : YAFFS_FAIL; -- } else { -- /* The file has no data chunks so we toss it immediately */ -- yaffs_FreeTnode(in->myDev, in->variant.fileVariant.top); -- in->variant.fileVariant.top = NULL; -- yaffs_DoGenericObjectDeletion(in); -- -- return YAFFS_OK; -- } --} -+/*------------------------ Short Operations Cache ---------------------------------------- -+ * In many situations where there is no high level buffering (eg WinCE) a lot of -+ * reads might be short sequential reads, and a lot of writes may be short -+ * sequential writes. eg. scanning/writing a jpeg file. -+ * In these cases, a short read/write cache can provide a huge perfomance benefit -+ * with dumb-as-a-rock code. -+ * In Linux, the page cache provides read buffering aand the short op cache provides write -+ * buffering. -+ * -+ * There are a limited number (~10) of cache chunks per device so that we don't -+ * need a very intelligent search. -+ */ - --static int yaffs_DeleteDirectory(yaffs_Object *in) -+static int yaffs_obj_cache_dirty(yaffs_obj_t *obj) - { -- /* First check that the directory is empty. */ -- if (ylist_empty(&in->variant.directoryVariant.children)) -- return yaffs_DoGenericObjectDeletion(in); -+ yaffs_dev_t *dev = obj->my_dev; -+ int i; -+ yaffs_cache_t *cache; -+ int nCaches = obj->my_dev->param.n_caches; - -- return YAFFS_FAIL; -+ for (i = 0; i < nCaches; i++) { -+ cache = &dev->cache[i]; -+ if (cache->object == obj && -+ cache->dirty) -+ return 1; -+ } - -+ return 0; - } - --static int yaffs_DeleteSymLink(yaffs_Object *in) --{ -- YFREE(in->variant.symLinkVariant.alias); -- -- return yaffs_DoGenericObjectDeletion(in); --} - --static int yaffs_DeleteHardLink(yaffs_Object *in) -+static void yaffs_flush_file_cache(yaffs_obj_t *obj) - { -- /* remove this hardlink from the list assocaited with the equivalent -- * object -- */ -- ylist_del_init(&in->hardLinks); -- return yaffs_DoGenericObjectDeletion(in); --} -+ yaffs_dev_t *dev = obj->my_dev; -+ int lowest = -99; /* Stop compiler whining. */ -+ int i; -+ yaffs_cache_t *cache; -+ int chunkWritten = 0; -+ int nCaches = obj->my_dev->param.n_caches; - --int yaffs_DeleteObject(yaffs_Object *obj) --{ --int retVal = -1; -- switch (obj->variantType) { -- case YAFFS_OBJECT_TYPE_FILE: -- retVal = yaffs_DeleteFile(obj); -- break; -- case YAFFS_OBJECT_TYPE_DIRECTORY: -- return yaffs_DeleteDirectory(obj); -- break; -- case YAFFS_OBJECT_TYPE_SYMLINK: -- retVal = yaffs_DeleteSymLink(obj); -- break; -- case YAFFS_OBJECT_TYPE_HARDLINK: -- retVal = yaffs_DeleteHardLink(obj); -- break; -- case YAFFS_OBJECT_TYPE_SPECIAL: -- retVal = yaffs_DoGenericObjectDeletion(obj); -- break; -- case YAFFS_OBJECT_TYPE_UNKNOWN: -- retVal = 0; -- break; /* should not happen. */ -- } -+ if (nCaches > 0) { -+ do { -+ cache = NULL; - -- return retVal; --} -+ /* Find the dirty cache for this object with the lowest chunk id. */ -+ for (i = 0; i < nCaches; i++) { -+ if (dev->cache[i].object == obj && -+ dev->cache[i].dirty) { -+ if (!cache -+ || dev->cache[i].chunk_id < -+ lowest) { -+ cache = &dev->cache[i]; -+ lowest = cache->chunk_id; -+ } -+ } -+ } - --static int yaffs_UnlinkWorker(yaffs_Object *obj) --{ -+ if (cache && !cache->locked) { -+ /* Write it out and free it up */ - -- int immediateDeletion = 0; -+ chunkWritten = -+ yaffs_wr_data_obj(cache->object, -+ cache->chunk_id, -+ cache->data, -+ cache->n_bytes, -+ 1); -+ cache->dirty = 0; -+ cache->object = NULL; -+ } - --#ifdef __KERNEL__ -- if (!obj->myInode) -- immediateDeletion = 1; --#else -- if (obj->inUse <= 0) -- immediateDeletion = 1; --#endif -+ } while (cache && chunkWritten > 0); - -- if (obj->variantType == YAFFS_OBJECT_TYPE_HARDLINK) { -- return yaffs_DeleteHardLink(obj); -- } else if (!ylist_empty(&obj->hardLinks)) { -- /* Curve ball: We're unlinking an object that has a hardlink. -- * -- * This problem arises because we are not strictly following -- * The Linux link/inode model. -- * -- * We can't really delete the object. -- * Instead, we do the following: -- * - Select a hardlink. -- * - Unhook it from the hard links -- * - Unhook it from its parent directory (so that the rename can work) -- * - Rename the object to the hardlink's name. -- * - Delete the hardlink -- */ -+ if (cache) { -+ /* Hoosterman, disk full while writing cache out. */ -+ T(YAFFS_TRACE_ERROR, -+ (TSTR("yaffs tragedy: no space during cache write" TENDSTR))); - -- yaffs_Object *hl; -- int retVal; -- YCHAR name[YAFFS_MAX_NAME_LENGTH + 1]; -+ } -+ } - -- hl = ylist_entry(obj->hardLinks.next, yaffs_Object, hardLinks); -+} - -- ylist_del_init(&hl->hardLinks); -- ylist_del_init(&hl->siblings); -+/*yaffs_flush_whole_cache(dev) -+ * -+ * -+ */ - -- yaffs_GetObjectName(hl, name, YAFFS_MAX_NAME_LENGTH + 1); -+void yaffs_flush_whole_cache(yaffs_dev_t *dev) -+{ -+ yaffs_obj_t *obj; -+ int nCaches = dev->param.n_caches; -+ int i; - -- retVal = yaffs_ChangeObjectName(obj, hl->parent, name, 0, 0); -+ /* Find a dirty object in the cache and flush it... -+ * until there are no further dirty objects. -+ */ -+ do { -+ obj = NULL; -+ for (i = 0; i < nCaches && !obj; i++) { -+ if (dev->cache[i].object && -+ dev->cache[i].dirty) -+ obj = dev->cache[i].object; - -- if (retVal == YAFFS_OK) -- retVal = yaffs_DoGenericObjectDeletion(hl); -+ } -+ if (obj) -+ yaffs_flush_file_cache(obj); - -- return retVal; -+ } while (obj); - -- } else if (immediateDeletion) { -- switch (obj->variantType) { -- case YAFFS_OBJECT_TYPE_FILE: -- return yaffs_DeleteFile(obj); -- break; -- case YAFFS_OBJECT_TYPE_DIRECTORY: -- return yaffs_DeleteDirectory(obj); -- break; -- case YAFFS_OBJECT_TYPE_SYMLINK: -- return yaffs_DeleteSymLink(obj); -- break; -- case YAFFS_OBJECT_TYPE_SPECIAL: -- return yaffs_DoGenericObjectDeletion(obj); -- break; -- case YAFFS_OBJECT_TYPE_HARDLINK: -- case YAFFS_OBJECT_TYPE_UNKNOWN: -- default: -- return YAFFS_FAIL; -- } -- } else -- return yaffs_ChangeObjectName(obj, obj->myDev->unlinkedDir, -- _Y("unlinked"), 0, 0); - } - - --static int yaffs_UnlinkObject(yaffs_Object *obj) -+/* Grab us a cache chunk for use. -+ * First look for an empty one. -+ * Then look for the least recently used non-dirty one. -+ * Then look for the least recently used dirty one...., flush and look again. -+ */ -+static yaffs_cache_t *yaffs_grab_chunk_worker(yaffs_dev_t *dev) - { -+ int i; - -- if (obj && obj->unlinkAllowed) -- return yaffs_UnlinkWorker(obj); -- -- return YAFFS_FAIL; -- --} --int yaffs_Unlink(yaffs_Object *dir, const YCHAR *name) --{ -- yaffs_Object *obj; -+ if (dev->param.n_caches > 0) { -+ for (i = 0; i < dev->param.n_caches; i++) { -+ if (!dev->cache[i].object) -+ return &dev->cache[i]; -+ } -+ } - -- obj = yaffs_FindObjectByName(dir, name); -- return yaffs_UnlinkObject(obj); -+ return NULL; - } - --/*----------------------- Initialisation Scanning ---------------------- */ -- --static void yaffs_HandleShadowedObject(yaffs_Device *dev, int objId, -- int backwardScanning) -+static yaffs_cache_t *yaffs_grab_chunk_cache(yaffs_dev_t *dev) - { -- yaffs_Object *obj; -+ yaffs_cache_t *cache; -+ yaffs_obj_t *theObj; -+ int usage; -+ int i; -+ int pushout; - -- if (!backwardScanning) { -- /* Handle YAFFS1 forward scanning case -- * For YAFFS1 we always do the deletion -- */ -+ if (dev->param.n_caches > 0) { -+ /* Try find a non-dirty one... */ - -- } else { -- /* Handle YAFFS2 case (backward scanning) -- * If the shadowed object exists then ignore. -- */ -- if (yaffs_FindObjectByNumber(dev, objId)) -- return; -- } -+ cache = yaffs_grab_chunk_worker(dev); - -- /* Let's create it (if it does not exist) assuming it is a file so that it can do shrinking etc. -- * We put it in unlinked dir to be cleaned up after the scanning -- */ -- obj = -- yaffs_FindOrCreateObjectByNumber(dev, objId, -- YAFFS_OBJECT_TYPE_FILE); -- if (!obj) -- return; -- yaffs_AddObjectToDirectory(dev->unlinkedDir, obj); -- obj->variant.fileVariant.shrinkSize = 0; -- obj->valid = 1; /* So that we don't read any other info for this file */ -+ if (!cache) { -+ /* They were all dirty, find the last recently used object and flush -+ * its cache, then find again. -+ * NB what's here is not very accurate, we actually flush the object -+ * the last recently used page. -+ */ - --} -+ /* With locking we can't assume we can use entry zero */ - --typedef struct { -- int seq; -- int block; --} yaffs_BlockIndex; -+ theObj = NULL; -+ usage = -1; -+ cache = NULL; -+ pushout = -1; - -+ for (i = 0; i < dev->param.n_caches; i++) { -+ if (dev->cache[i].object && -+ !dev->cache[i].locked && -+ (dev->cache[i].last_use < usage || !cache)) { -+ usage = dev->cache[i].last_use; -+ theObj = dev->cache[i].object; -+ cache = &dev->cache[i]; -+ pushout = i; -+ } -+ } - --static void yaffs_HardlinkFixup(yaffs_Device *dev, yaffs_Object *hardList) --{ -- yaffs_Object *hl; -- yaffs_Object *in; -+ if (!cache || cache->dirty) { -+ /* Flush and try again */ -+ yaffs_flush_file_cache(theObj); -+ cache = yaffs_grab_chunk_worker(dev); -+ } - -- while (hardList) { -- hl = hardList; -- hardList = (yaffs_Object *) (hardList->hardLinks.next); -+ } -+ return cache; -+ } else -+ return NULL; - -- in = yaffs_FindObjectByNumber(dev, -- hl->variant.hardLinkVariant. -- equivalentObjectId); -+} - -- if (in) { -- /* Add the hardlink pointers */ -- hl->variant.hardLinkVariant.equivalentObject = in; -- ylist_add(&hl->hardLinks, &in->hardLinks); -- } else { -- /* Todo Need to report/handle this better. -- * Got a problem... hardlink to a non-existant object -- */ -- hl->variant.hardLinkVariant.equivalentObject = NULL; -- YINIT_LIST_HEAD(&hl->hardLinks); -+/* Find a cached chunk */ -+static yaffs_cache_t *yaffs_find_chunk_cache(const yaffs_obj_t *obj, -+ int chunk_id) -+{ -+ yaffs_dev_t *dev = obj->my_dev; -+ int i; -+ if (dev->param.n_caches > 0) { -+ for (i = 0; i < dev->param.n_caches; i++) { -+ if (dev->cache[i].object == obj && -+ dev->cache[i].chunk_id == chunk_id) { -+ dev->cache_hits++; - -+ return &dev->cache[i]; -+ } - } - } -+ return NULL; - } - -+/* Mark the chunk for the least recently used algorithym */ -+static void yaffs_use_cache(yaffs_dev_t *dev, yaffs_cache_t *cache, -+ int isAWrite) -+{ -+ -+ if (dev->param.n_caches > 0) { -+ if (dev->cache_last_use < 0 || dev->cache_last_use > 100000000) { -+ /* Reset the cache usages */ -+ int i; -+ for (i = 1; i < dev->param.n_caches; i++) -+ dev->cache[i].last_use = 0; - -+ dev->cache_last_use = 0; -+ } - -+ dev->cache_last_use++; - -+ cache->last_use = dev->cache_last_use; - --static int ybicmp(const void *a, const void *b) --{ -- register int aseq = ((yaffs_BlockIndex *)a)->seq; -- register int bseq = ((yaffs_BlockIndex *)b)->seq; -- register int ablock = ((yaffs_BlockIndex *)a)->block; -- register int bblock = ((yaffs_BlockIndex *)b)->block; -- if (aseq == bseq) -- return ablock - bblock; -- else -- return aseq - bseq; -+ if (isAWrite) -+ cache->dirty = 1; -+ } - } - -+/* Invalidate a single cache page. -+ * Do this when a whole page gets written, -+ * ie the short cache for this page is no longer valid. -+ */ -+static void yaffs_invalidate_chunk_cache(yaffs_obj_t *object, int chunk_id) -+{ -+ if (object->my_dev->param.n_caches > 0) { -+ yaffs_cache_t *cache = yaffs_find_chunk_cache(object, chunk_id); - --struct yaffs_ShadowFixerStruct { -- int objectId; -- int shadowedId; -- struct yaffs_ShadowFixerStruct *next; --}; -- -+ if (cache) -+ cache->object = NULL; -+ } -+} - --static void yaffs_StripDeletedObjects(yaffs_Device *dev) -+/* Invalidate all the cache pages associated with this object -+ * Do this whenever ther file is deleted or resized. -+ */ -+static void yaffs_invalidate_whole_cache(yaffs_obj_t *in) - { -- /* -- * Sort out state of unlinked and deleted objects after scanning. -- */ -- struct ylist_head *i; -- struct ylist_head *n; -- yaffs_Object *l; -+ int i; -+ yaffs_dev_t *dev = in->my_dev; - -- /* Soft delete all the unlinked files */ -- ylist_for_each_safe(i, n, -- &dev->unlinkedDir->variant.directoryVariant.children) { -- if (i) { -- l = ylist_entry(i, yaffs_Object, siblings); -- yaffs_DeleteObject(l); -+ if (dev->param.n_caches > 0) { -+ /* Invalidate it. */ -+ for (i = 0; i < dev->param.n_caches; i++) { -+ if (dev->cache[i].object == in) -+ dev->cache[i].object = NULL; - } - } -+} - -- ylist_for_each_safe(i, n, -- &dev->deletedDir->variant.directoryVariant.children) { -- if (i) { -- l = ylist_entry(i, yaffs_Object, siblings); -- yaffs_DeleteObject(l); -- } -- } - --} -+/*--------------------- File read/write ------------------------ -+ * Read and write have very similar structures. -+ * In general the read/write has three parts to it -+ * An incomplete chunk to start with (if the read/write is not chunk-aligned) -+ * Some complete chunks -+ * An incomplete chunk to end off with -+ * -+ * Curve-balls: the first chunk might also be the last chunk. -+ */ - --static int yaffs_Scan(yaffs_Device *dev) -+int yaffs_file_rd(yaffs_obj_t *in, __u8 *buffer, loff_t offset, -+ int n_bytes) - { -- yaffs_ExtendedTags tags; -- int blk; -- int blockIterator; -- int startIterator; -- int endIterator; -- int result; - - int chunk; -- int c; -- int deleted; -- yaffs_BlockState state; -- yaffs_Object *hardList = NULL; -- yaffs_BlockInfo *bi; -- __u32 sequenceNumber; -- yaffs_ObjectHeader *oh; -- yaffs_Object *in; -- yaffs_Object *parent; -+ __u32 start; -+ int nToCopy; -+ int n = n_bytes; -+ int nDone = 0; -+ yaffs_cache_t *cache; - -- int alloc_failed = 0; -+ yaffs_dev_t *dev; - -- struct yaffs_ShadowFixerStruct *shadowFixerList = NULL; -+ dev = in->my_dev; - -+ while (n > 0) { -+ /* chunk = offset / dev->data_bytes_per_chunk + 1; */ -+ /* start = offset % dev->data_bytes_per_chunk; */ -+ yaffs_addr_to_chunk(dev, offset, &chunk, &start); -+ chunk++; - -- __u8 *chunkData; -+ /* OK now check for the curveball where the start and end are in -+ * the same chunk. -+ */ -+ if ((start + n) < dev->data_bytes_per_chunk) -+ nToCopy = n; -+ else -+ nToCopy = dev->data_bytes_per_chunk - start; - -+ cache = yaffs_find_chunk_cache(in, chunk); - -+ /* If the chunk is already in the cache or it is less than a whole chunk -+ * or we're using inband tags then use the cache (if there is caching) -+ * else bypass the cache. -+ */ -+ if (cache || nToCopy != dev->data_bytes_per_chunk || dev->param.inband_tags) { -+ if (dev->param.n_caches > 0) { - -- T(YAFFS_TRACE_SCAN, -- (TSTR("yaffs_Scan starts intstartblk %d intendblk %d..." TENDSTR), -- dev->internalStartBlock, dev->internalEndBlock)); -+ /* If we can't find the data in the cache, then load it up. */ - -- chunkData = yaffs_GetTempBuffer(dev, __LINE__); -+ if (!cache) { -+ cache = yaffs_grab_chunk_cache(in->my_dev); -+ cache->object = in; -+ cache->chunk_id = chunk; -+ cache->dirty = 0; -+ cache->locked = 0; -+ yaffs_rd_data_obj(in, chunk, -+ cache-> -+ data); -+ cache->n_bytes = 0; -+ } - -- dev->sequenceNumber = YAFFS_LOWEST_SEQUENCE_NUMBER; -+ yaffs_use_cache(dev, cache, 0); - -- /* Scan all the blocks to determine their state */ -- for (blk = dev->internalStartBlock; blk <= dev->internalEndBlock; blk++) { -- bi = yaffs_GetBlockInfo(dev, blk); -- yaffs_ClearChunkBits(dev, blk); -- bi->pagesInUse = 0; -- bi->softDeletions = 0; -+ cache->locked = 1; - -- yaffs_QueryInitialBlockState(dev, blk, &state, &sequenceNumber); - -- bi->blockState = state; -- bi->sequenceNumber = sequenceNumber; -+ memcpy(buffer, &cache->data[start], nToCopy); - -- if (bi->sequenceNumber == YAFFS_SEQUENCE_BAD_BLOCK) -- bi->blockState = state = YAFFS_BLOCK_STATE_DEAD; -+ cache->locked = 0; -+ } else { -+ /* Read into the local buffer then copy..*/ - -- T(YAFFS_TRACE_SCAN_DEBUG, -- (TSTR("Block scanning block %d state %d seq %d" TENDSTR), blk, -- state, sequenceNumber)); -+ __u8 *localBuffer = -+ yaffs_get_temp_buffer(dev, __LINE__); -+ yaffs_rd_data_obj(in, chunk, -+ localBuffer); - -- if (state == YAFFS_BLOCK_STATE_DEAD) { -- T(YAFFS_TRACE_BAD_BLOCKS, -- (TSTR("block %d is bad" TENDSTR), blk)); -- } else if (state == YAFFS_BLOCK_STATE_EMPTY) { -- T(YAFFS_TRACE_SCAN_DEBUG, -- (TSTR("Block empty " TENDSTR))); -- dev->nErasedBlocks++; -- dev->nFreeChunks += dev->nChunksPerBlock; -- } -- } -+ memcpy(buffer, &localBuffer[start], nToCopy); - -- startIterator = dev->internalStartBlock; -- endIterator = dev->internalEndBlock; - -- /* For each block.... */ -- for (blockIterator = startIterator; !alloc_failed && blockIterator <= endIterator; -- blockIterator++) { -+ yaffs_release_temp_buffer(dev, localBuffer, -+ __LINE__); -+ } - -- YYIELD(); -+ } else { - -- YYIELD(); -+ /* A full chunk. Read directly into the supplied buffer. */ -+ yaffs_rd_data_obj(in, chunk, buffer); - -- blk = blockIterator; -+ } - -- bi = yaffs_GetBlockInfo(dev, blk); -- state = bi->blockState; -+ n -= nToCopy; -+ offset += nToCopy; -+ buffer += nToCopy; -+ nDone += nToCopy; - -- deleted = 0; -+ } - -- /* For each chunk in each block that needs scanning....*/ -- for (c = 0; !alloc_failed && c < dev->nChunksPerBlock && -- state == YAFFS_BLOCK_STATE_NEEDS_SCANNING; c++) { -- /* Read the tags and decide what to do */ -- chunk = blk * dev->nChunksPerBlock + c; -+ return nDone; -+} - -- result = yaffs_ReadChunkWithTagsFromNAND(dev, chunk, NULL, -- &tags); -+int yaffs_do_file_wr(yaffs_obj_t *in, const __u8 *buffer, loff_t offset, -+ int n_bytes, int write_trhrough) -+{ - -- /* Let's have a good look at this chunk... */ -+ int chunk; -+ __u32 start; -+ int nToCopy; -+ int n = n_bytes; -+ int nDone = 0; -+ int nToWriteBack; -+ int startOfWrite = offset; -+ int chunkWritten = 0; -+ __u32 n_bytesRead; -+ __u32 chunkStart; - -- if (tags.eccResult == YAFFS_ECC_RESULT_UNFIXED || tags.chunkDeleted) { -- /* YAFFS1 only... -- * A deleted chunk -- */ -- deleted++; -- dev->nFreeChunks++; -- /*T((" %d %d deleted\n",blk,c)); */ -- } else if (!tags.chunkUsed) { -- /* An unassigned chunk in the block -- * This means that either the block is empty or -- * this is the one being allocated from -- */ -+ yaffs_dev_t *dev; - -- if (c == 0) { -- /* We're looking at the first chunk in the block so the block is unused */ -- state = YAFFS_BLOCK_STATE_EMPTY; -- dev->nErasedBlocks++; -- } else { -- /* this is the block being allocated from */ -- T(YAFFS_TRACE_SCAN, -- (TSTR -- (" Allocating from %d %d" TENDSTR), -- blk, c)); -- state = YAFFS_BLOCK_STATE_ALLOCATING; -- dev->allocationBlock = blk; -- dev->allocationPage = c; -- dev->allocationBlockFinder = blk; -- /* Set it to here to encourage the allocator to go forth from here. */ -+ dev = in->my_dev; - -- } -+ while (n > 0 && chunkWritten >= 0) { -+ yaffs_addr_to_chunk(dev, offset, &chunk, &start); - -- dev->nFreeChunks += (dev->nChunksPerBlock - c); -- } else if (tags.chunkId > 0) { -- /* chunkId > 0 so it is a data chunk... */ -- unsigned int endpos; -- -- yaffs_SetChunkBit(dev, blk, c); -- bi->pagesInUse++; -- -- in = yaffs_FindOrCreateObjectByNumber(dev, -- tags. -- objectId, -- YAFFS_OBJECT_TYPE_FILE); -- /* PutChunkIntoFile checks for a clash (two data chunks with -- * the same chunkId). -- */ -+ if (chunk * dev->data_bytes_per_chunk + start != offset || -+ start >= dev->data_bytes_per_chunk) { -+ T(YAFFS_TRACE_ERROR, ( -+ TSTR("AddrToChunk of offset %d gives chunk %d start %d" -+ TENDSTR), -+ (int)offset, chunk, start)); -+ } -+ chunk++; /* File pos to chunk in file offset */ - -- if (!in) -- alloc_failed = 1; -+ /* OK now check for the curveball where the start and end are in -+ * the same chunk. -+ */ - -- if (in) { -- if (!yaffs_PutChunkIntoFile(in, tags.chunkId, chunk, 1)) -- alloc_failed = 1; -- } -+ if ((start + n) < dev->data_bytes_per_chunk) { -+ nToCopy = n; - -- endpos = -- (tags.chunkId - 1) * dev->nDataBytesPerChunk + -- tags.byteCount; -- if (in && -- in->variantType == YAFFS_OBJECT_TYPE_FILE -- && in->variant.fileVariant.scannedFileSize < -- endpos) { -- in->variant.fileVariant. -- scannedFileSize = endpos; -- if (!dev->useHeaderFileSize) { -- in->variant.fileVariant. -- fileSize = -- in->variant.fileVariant. -- scannedFileSize; -- } -+ /* Now folks, to calculate how many bytes to write back.... -+ * If we're overwriting and not writing to then end of file then -+ * we need to write back as much as was there before. -+ */ - -- } -- /* T((" %d %d data %d %d\n",blk,c,tags.objectId,tags.chunkId)); */ -- } else { -- /* chunkId == 0, so it is an ObjectHeader. -- * Thus, we read in the object header and make the object -- */ -- yaffs_SetChunkBit(dev, blk, c); -- bi->pagesInUse++; -+ chunkStart = ((chunk - 1) * dev->data_bytes_per_chunk); - -- result = yaffs_ReadChunkWithTagsFromNAND(dev, chunk, -- chunkData, -- NULL); -- -- oh = (yaffs_ObjectHeader *) chunkData; -- -- in = yaffs_FindObjectByNumber(dev, -- tags.objectId); -- if (in && in->variantType != oh->type) { -- /* This should not happen, but somehow -- * Wev'e ended up with an objectId that has been reused but not yet -- * deleted, and worse still it has changed type. Delete the old object. -- */ -+ if (chunkStart > in->variant.file_variant.file_size) -+ n_bytesRead = 0; /* Past end of file */ -+ else -+ n_bytesRead = in->variant.file_variant.file_size - chunkStart; - -- yaffs_DeleteObject(in); -+ if (n_bytesRead > dev->data_bytes_per_chunk) -+ n_bytesRead = dev->data_bytes_per_chunk; - -- in = 0; -- } -+ nToWriteBack = -+ (n_bytesRead > -+ (start + n)) ? n_bytesRead : (start + n); - -- in = yaffs_FindOrCreateObjectByNumber(dev, -- tags. -- objectId, -- oh->type); -- -- if (!in) -- alloc_failed = 1; -- -- if (in && oh->shadowsObject > 0) { -- -- struct yaffs_ShadowFixerStruct *fixer; -- fixer = YMALLOC(sizeof(struct yaffs_ShadowFixerStruct)); -- if (fixer) { -- fixer->next = shadowFixerList; -- shadowFixerList = fixer; -- fixer->objectId = tags.objectId; -- fixer->shadowedId = oh->shadowsObject; -- } -+ if (nToWriteBack < 0 || nToWriteBack > dev->data_bytes_per_chunk) -+ YBUG(); -+ -+ } else { -+ nToCopy = dev->data_bytes_per_chunk - start; -+ nToWriteBack = dev->data_bytes_per_chunk; -+ } -+ -+ if (nToCopy != dev->data_bytes_per_chunk || dev->param.inband_tags) { -+ /* An incomplete start or end chunk (or maybe both start and end chunk), -+ * or we're using inband tags, so we want to use the cache buffers. -+ */ -+ if (dev->param.n_caches > 0) { -+ yaffs_cache_t *cache; -+ /* If we can't find the data in the cache, then load the cache */ -+ cache = yaffs_find_chunk_cache(in, chunk); - -+ if (!cache -+ && yaffs_check_alloc_available(dev, 1)) { -+ cache = yaffs_grab_chunk_cache(dev); -+ cache->object = in; -+ cache->chunk_id = chunk; -+ cache->dirty = 0; -+ cache->locked = 0; -+ yaffs_rd_data_obj(in, chunk, -+ cache->data); -+ } else if (cache && -+ !cache->dirty && -+ !yaffs_check_alloc_available(dev, 1)) { -+ /* Drop the cache if it was a read cache item and -+ * no space check has been made for it. -+ */ -+ cache = NULL; - } - -- if (in && in->valid) { -- /* We have already filled this one. We have a duplicate and need to resolve it. */ -+ if (cache) { -+ yaffs_use_cache(dev, cache, 1); -+ cache->locked = 1; - -- unsigned existingSerial = in->serial; -- unsigned newSerial = tags.serialNumber; - -- if (((existingSerial + 1) & 3) == newSerial) { -- /* Use new one - destroy the exisiting one */ -- yaffs_DeleteChunk(dev, -- in->hdrChunk, -- 1, __LINE__); -- in->valid = 0; -- } else { -- /* Use existing - destroy this one. */ -- yaffs_DeleteChunk(dev, chunk, 1, -- __LINE__); -+ memcpy(&cache->data[start], buffer, -+ nToCopy); -+ -+ -+ cache->locked = 0; -+ cache->n_bytes = nToWriteBack; -+ -+ if (write_trhrough) { -+ chunkWritten = -+ yaffs_wr_data_obj -+ (cache->object, -+ cache->chunk_id, -+ cache->data, cache->n_bytes, -+ 1); -+ cache->dirty = 0; - } -+ -+ } else { -+ chunkWritten = -1; /* fail the write */ - } -+ } else { -+ /* An incomplete start or end chunk (or maybe both start and end chunk) -+ * Read into the local buffer then copy, then copy over and write back. -+ */ - -- if (in && !in->valid && -- (tags.objectId == YAFFS_OBJECTID_ROOT || -- tags.objectId == YAFFS_OBJECTID_LOSTNFOUND)) { -- /* We only load some info, don't fiddle with directory structure */ -- in->valid = 1; -- in->variantType = oh->type; -+ __u8 *localBuffer = -+ yaffs_get_temp_buffer(dev, __LINE__); - -- in->yst_mode = oh->yst_mode; --#ifdef CONFIG_YAFFS_WINCE -- in->win_atime[0] = oh->win_atime[0]; -- in->win_ctime[0] = oh->win_ctime[0]; -- in->win_mtime[0] = oh->win_mtime[0]; -- in->win_atime[1] = oh->win_atime[1]; -- in->win_ctime[1] = oh->win_ctime[1]; -- in->win_mtime[1] = oh->win_mtime[1]; --#else -- in->yst_uid = oh->yst_uid; -- in->yst_gid = oh->yst_gid; -- in->yst_atime = oh->yst_atime; -- in->yst_mtime = oh->yst_mtime; -- in->yst_ctime = oh->yst_ctime; -- in->yst_rdev = oh->yst_rdev; --#endif -- in->hdrChunk = chunk; -- in->serial = tags.serialNumber; -+ yaffs_rd_data_obj(in, chunk, -+ localBuffer); - -- } else if (in && !in->valid) { -- /* we need to load this info */ - -- in->valid = 1; -- in->variantType = oh->type; - -- in->yst_mode = oh->yst_mode; --#ifdef CONFIG_YAFFS_WINCE -- in->win_atime[0] = oh->win_atime[0]; -- in->win_ctime[0] = oh->win_ctime[0]; -- in->win_mtime[0] = oh->win_mtime[0]; -- in->win_atime[1] = oh->win_atime[1]; -- in->win_ctime[1] = oh->win_ctime[1]; -- in->win_mtime[1] = oh->win_mtime[1]; --#else -- in->yst_uid = oh->yst_uid; -- in->yst_gid = oh->yst_gid; -- in->yst_atime = oh->yst_atime; -- in->yst_mtime = oh->yst_mtime; -- in->yst_ctime = oh->yst_ctime; -- in->yst_rdev = oh->yst_rdev; --#endif -- in->hdrChunk = chunk; -- in->serial = tags.serialNumber; -+ memcpy(&localBuffer[start], buffer, nToCopy); - -- yaffs_SetObjectName(in, oh->name); -- in->dirty = 0; -+ chunkWritten = -+ yaffs_wr_data_obj(in, chunk, -+ localBuffer, -+ nToWriteBack, -+ 0); - -- /* directory stuff... -- * hook up to parent -- */ -+ yaffs_release_temp_buffer(dev, localBuffer, -+ __LINE__); - -- parent = -- yaffs_FindOrCreateObjectByNumber -- (dev, oh->parentObjectId, -- YAFFS_OBJECT_TYPE_DIRECTORY); -- if (!parent) -- alloc_failed = 1; -- if (parent && parent->variantType == -- YAFFS_OBJECT_TYPE_UNKNOWN) { -- /* Set up as a directory */ -- parent->variantType = -- YAFFS_OBJECT_TYPE_DIRECTORY; -- YINIT_LIST_HEAD(&parent->variant. -- directoryVariant. -- children); -- } else if (!parent || parent->variantType != -- YAFFS_OBJECT_TYPE_DIRECTORY) { -- /* Hoosterman, another problem.... -- * We're trying to use a non-directory as a directory -- */ -+ } - -- T(YAFFS_TRACE_ERROR, -- (TSTR -- ("yaffs tragedy: attempting to use non-directory as a directory in scan. Put in lost+found." -- TENDSTR))); -- parent = dev->lostNFoundDir; -- } -+ } else { -+ /* A full chunk. Write directly from the supplied buffer. */ - -- yaffs_AddObjectToDirectory(parent, in); - -- if (0 && (parent == dev->deletedDir || -- parent == dev->unlinkedDir)) { -- in->deleted = 1; /* If it is unlinked at start up then it wants deleting */ -- dev->nDeletedFiles++; -- } -- /* Note re hardlinks. -- * Since we might scan a hardlink before its equivalent object is scanned -- * we put them all in a list. -- * After scanning is complete, we should have all the objects, so we run through this -- * list and fix up all the chains. -- */ - -- switch (in->variantType) { -- case YAFFS_OBJECT_TYPE_UNKNOWN: -- /* Todo got a problem */ -- break; -- case YAFFS_OBJECT_TYPE_FILE: -- if (dev->useHeaderFileSize) -- -- in->variant.fileVariant. -- fileSize = -- oh->fileSize; -- -- break; -- case YAFFS_OBJECT_TYPE_HARDLINK: -- in->variant.hardLinkVariant. -- equivalentObjectId = -- oh->equivalentObjectId; -- in->hardLinks.next = -- (struct ylist_head *) -- hardList; -- hardList = in; -- break; -- case YAFFS_OBJECT_TYPE_DIRECTORY: -- /* Do nothing */ -- break; -- case YAFFS_OBJECT_TYPE_SPECIAL: -- /* Do nothing */ -- break; -- case YAFFS_OBJECT_TYPE_SYMLINK: -- in->variant.symLinkVariant.alias = -- yaffs_CloneString(oh->alias); -- if (!in->variant.symLinkVariant.alias) -- alloc_failed = 1; -- break; -- } -+ chunkWritten = -+ yaffs_wr_data_obj(in, chunk, buffer, -+ dev->data_bytes_per_chunk, -+ 0); - --/* -- if (parent == dev->deletedDir) { -- yaffs_DestroyObject(in); -- bi->hasShrinkHeader = 1; -- } --*/ -- } -- } -+ /* Since we've overwritten the cached data, we better invalidate it. */ -+ yaffs_invalidate_chunk_cache(in, chunk); - } - -- if (state == YAFFS_BLOCK_STATE_NEEDS_SCANNING) { -- /* If we got this far while scanning, then the block is fully allocated.*/ -- state = YAFFS_BLOCK_STATE_FULL; -+ if (chunkWritten >= 0) { -+ n -= nToCopy; -+ offset += nToCopy; -+ buffer += nToCopy; -+ nDone += nToCopy; - } - -- bi->blockState = state; -+ } - -- /* Now let's see if it was dirty */ -- if (bi->pagesInUse == 0 && -- !bi->hasShrinkHeader && -- bi->blockState == YAFFS_BLOCK_STATE_FULL) { -- yaffs_BlockBecameDirty(dev, blk); -- } -+ /* Update file object */ - -- } -+ if ((startOfWrite + nDone) > in->variant.file_variant.file_size) -+ in->variant.file_variant.file_size = (startOfWrite + nDone); - -+ in->dirty = 1; - -- /* Ok, we've done all the scanning. -- * Fix up the hard link chains. -- * We should now have scanned all the objects, now it's time to add these -- * hardlinks. -- */ -+ return nDone; -+} - -- yaffs_HardlinkFixup(dev, hardList); -+int yaffs_wr_file(yaffs_obj_t *in, const __u8 *buffer, loff_t offset, -+ int n_bytes, int write_trhrough) -+{ -+ yaffs2_handle_hole(in,offset); -+ return yaffs_do_file_wr(in,buffer,offset,n_bytes,write_trhrough); -+} - -- /* Fix up any shadowed objects */ -- { -- struct yaffs_ShadowFixerStruct *fixer; -- yaffs_Object *obj; -- -- while (shadowFixerList) { -- fixer = shadowFixerList; -- shadowFixerList = fixer->next; -- /* Complete the rename transaction by deleting the shadowed object -- * then setting the object header to unshadowed. -- */ -- obj = yaffs_FindObjectByNumber(dev, fixer->shadowedId); -- if (obj) -- yaffs_DeleteObject(obj); - -- obj = yaffs_FindObjectByNumber(dev, fixer->objectId); - -- if (obj) -- yaffs_UpdateObjectHeader(obj, NULL, 1, 0, 0); -+/* ---------------------- File resizing stuff ------------------ */ - -- YFREE(fixer); -- } -- } -+static void yaffs_prune_chunks(yaffs_obj_t *in, int new_size) -+{ - -- yaffs_ReleaseTempBuffer(dev, chunkData, __LINE__); -+ yaffs_dev_t *dev = in->my_dev; -+ int oldFileSize = in->variant.file_variant.file_size; - -- if (alloc_failed) -- return YAFFS_FAIL; -+ int lastDel = 1 + (oldFileSize - 1) / dev->data_bytes_per_chunk; -+ -+ int startDel = 1 + (new_size + dev->data_bytes_per_chunk - 1) / -+ dev->data_bytes_per_chunk; -+ int i; -+ int chunk_id; - -- T(YAFFS_TRACE_SCAN, (TSTR("yaffs_Scan ends" TENDSTR))); -+ /* Delete backwards so that we don't end up with holes if -+ * power is lost part-way through the operation. -+ */ -+ for (i = lastDel; i >= startDel; i--) { -+ /* NB this could be optimised somewhat, -+ * eg. could retrieve the tags and write them without -+ * using yaffs_chunk_del -+ */ - -+ chunk_id = yaffs_find_del_file_chunk(in, i, NULL); -+ if (chunk_id > 0) { -+ if (chunk_id < -+ (dev->internal_start_block * dev->param.chunks_per_block) -+ || chunk_id >= -+ ((dev->internal_end_block + -+ 1) * dev->param.chunks_per_block)) { -+ T(YAFFS_TRACE_ALWAYS, -+ (TSTR("Found daft chunk_id %d for %d" TENDSTR), -+ chunk_id, i)); -+ } else { -+ in->n_data_chunks--; -+ yaffs_chunk_del(dev, chunk_id, 1, __LINE__); -+ } -+ } -+ } - -- return YAFFS_OK; - } - --static void yaffs_CheckObjectDetailsLoaded(yaffs_Object *in) --{ -- __u8 *chunkData; -- yaffs_ObjectHeader *oh; -- yaffs_Device *dev; -- yaffs_ExtendedTags tags; -- int result; -- int alloc_failed = 0; - -- if (!in) -- return; -+void yaffs_resize_file_down( yaffs_obj_t *obj, loff_t new_size) -+{ -+ int newFullChunks; -+ __u32 new_sizeOfPartialChunk; -+ yaffs_dev_t *dev = obj->my_dev; - -- dev = in->myDev; -+ yaffs_addr_to_chunk(dev, new_size, &newFullChunks, &new_sizeOfPartialChunk); - --#if 0 -- T(YAFFS_TRACE_SCAN, (TSTR("details for object %d %s loaded" TENDSTR), -- in->objectId, -- in->lazyLoaded ? "not yet" : "already")); --#endif -+ yaffs_prune_chunks(obj, new_size); - -- if (in->lazyLoaded && in->hdrChunk > 0) { -- in->lazyLoaded = 0; -- chunkData = yaffs_GetTempBuffer(dev, __LINE__); -+ if (new_sizeOfPartialChunk != 0) { -+ int lastChunk = 1 + newFullChunks; -+ __u8 *localBuffer = yaffs_get_temp_buffer(dev, __LINE__); - -- result = yaffs_ReadChunkWithTagsFromNAND(dev, in->hdrChunk, chunkData, &tags); -- oh = (yaffs_ObjectHeader *) chunkData; -+ /* Got to read and rewrite the last chunk with its new size and zero pad */ -+ yaffs_rd_data_obj(obj, lastChunk, localBuffer); -+ memset(localBuffer + new_sizeOfPartialChunk, 0, -+ dev->data_bytes_per_chunk - new_sizeOfPartialChunk); - -- in->yst_mode = oh->yst_mode; --#ifdef CONFIG_YAFFS_WINCE -- in->win_atime[0] = oh->win_atime[0]; -- in->win_ctime[0] = oh->win_ctime[0]; -- in->win_mtime[0] = oh->win_mtime[0]; -- in->win_atime[1] = oh->win_atime[1]; -- in->win_ctime[1] = oh->win_ctime[1]; -- in->win_mtime[1] = oh->win_mtime[1]; --#else -- in->yst_uid = oh->yst_uid; -- in->yst_gid = oh->yst_gid; -- in->yst_atime = oh->yst_atime; -- in->yst_mtime = oh->yst_mtime; -- in->yst_ctime = oh->yst_ctime; -- in->yst_rdev = oh->yst_rdev; -+ yaffs_wr_data_obj(obj, lastChunk, localBuffer, -+ new_sizeOfPartialChunk, 1); - --#endif -- yaffs_SetObjectName(in, oh->name); -+ yaffs_release_temp_buffer(dev, localBuffer, __LINE__); -+ } - -- if (in->variantType == YAFFS_OBJECT_TYPE_SYMLINK) { -- in->variant.symLinkVariant.alias = -- yaffs_CloneString(oh->alias); -- if (!in->variant.symLinkVariant.alias) -- alloc_failed = 1; /* Not returned to caller */ -- } -+ obj->variant.file_variant.file_size = new_size; - -- yaffs_ReleaseTempBuffer(dev, chunkData, __LINE__); -- } -+ yaffs_prune_tree(dev, &obj->variant.file_variant); - } - --static int yaffs_ScanBackwards(yaffs_Device *dev) --{ -- yaffs_ExtendedTags tags; -- int blk; -- int blockIterator; -- int startIterator; -- int endIterator; -- int nBlocksToScan = 0; -- -- int chunk; -- int result; -- int c; -- int deleted; -- yaffs_BlockState state; -- yaffs_Object *hardList = NULL; -- yaffs_BlockInfo *bi; -- __u32 sequenceNumber; -- yaffs_ObjectHeader *oh; -- yaffs_Object *in; -- yaffs_Object *parent; -- int nBlocks = dev->internalEndBlock - dev->internalStartBlock + 1; -- int itsUnlinked; -- __u8 *chunkData; - -- int fileSize; -- int isShrink; -- int foundChunksInBlock; -- int equivalentObjectId; -- int alloc_failed = 0; -+int yaffs_resize_file(yaffs_obj_t *in, loff_t new_size) -+{ -+ yaffs_dev_t *dev = in->my_dev; -+ int oldFileSize = in->variant.file_variant.file_size; - -+ yaffs_flush_file_cache(in); -+ yaffs_invalidate_whole_cache(in); - -- yaffs_BlockIndex *blockIndex = NULL; -- int altBlockIndex = 0; -+ yaffs_check_gc(dev,0); - -- if (!dev->isYaffs2) { -- T(YAFFS_TRACE_SCAN, -- (TSTR("yaffs_ScanBackwards is only for YAFFS2!" TENDSTR))); -+ if (in->variant_type != YAFFS_OBJECT_TYPE_FILE) - return YAFFS_FAIL; -- } - -- T(YAFFS_TRACE_SCAN, -- (TSTR -- ("yaffs_ScanBackwards starts intstartblk %d intendblk %d..." -- TENDSTR), dev->internalStartBlock, dev->internalEndBlock)); -+ if (new_size == oldFileSize) -+ return YAFFS_OK; -+ -+ if(new_size > oldFileSize){ -+ yaffs2_handle_hole(in,new_size); -+ in->variant.file_variant.file_size = new_size; -+ } else { -+ /* new_size < oldFileSize */ -+ yaffs_resize_file_down(in, new_size); -+ } - -+ /* Write a new object header to reflect the resize. -+ * show we've shrunk the file, if need be -+ * Do this only if the file is not in the deleted directories -+ * and is not shadowed. -+ */ -+ if (in->parent && -+ !in->is_shadowed && -+ in->parent->obj_id != YAFFS_OBJECTID_UNLINKED && -+ in->parent->obj_id != YAFFS_OBJECTID_DELETED) -+ yaffs_update_oh(in, NULL, 0, 0, 0, NULL); - -- dev->sequenceNumber = YAFFS_LOWEST_SEQUENCE_NUMBER; - -- blockIndex = YMALLOC(nBlocks * sizeof(yaffs_BlockIndex)); -+ return YAFFS_OK; -+} - -- if (!blockIndex) { -- blockIndex = YMALLOC_ALT(nBlocks * sizeof(yaffs_BlockIndex)); -- altBlockIndex = 1; -- } -+loff_t yaffs_get_file_size(yaffs_obj_t *obj) -+{ -+ YCHAR *alias = NULL; -+ obj = yaffs_get_equivalent_obj(obj); - -- if (!blockIndex) { -- T(YAFFS_TRACE_SCAN, -- (TSTR("yaffs_Scan() could not allocate block index!" TENDSTR))); -- return YAFFS_FAIL; -+ switch (obj->variant_type) { -+ case YAFFS_OBJECT_TYPE_FILE: -+ return obj->variant.file_variant.file_size; -+ case YAFFS_OBJECT_TYPE_SYMLINK: -+ alias = obj->variant.symlink_variant.alias; -+ if(!alias) -+ return 0; -+ return yaffs_strnlen(alias,YAFFS_MAX_ALIAS_LENGTH); -+ default: -+ return 0; - } -+} - -- dev->blocksInCheckpoint = 0; -- -- chunkData = yaffs_GetTempBuffer(dev, __LINE__); -- -- /* Scan all the blocks to determine their state */ -- for (blk = dev->internalStartBlock; blk <= dev->internalEndBlock; blk++) { -- bi = yaffs_GetBlockInfo(dev, blk); -- yaffs_ClearChunkBits(dev, blk); -- bi->pagesInUse = 0; -- bi->softDeletions = 0; -- -- yaffs_QueryInitialBlockState(dev, blk, &state, &sequenceNumber); - -- bi->blockState = state; -- bi->sequenceNumber = sequenceNumber; - -- if (bi->sequenceNumber == YAFFS_SEQUENCE_CHECKPOINT_DATA) -- bi->blockState = state = YAFFS_BLOCK_STATE_CHECKPOINT; -- if (bi->sequenceNumber == YAFFS_SEQUENCE_BAD_BLOCK) -- bi->blockState = state = YAFFS_BLOCK_STATE_DEAD; -+int yaffs_flush_file(yaffs_obj_t *in, int update_time, int data_sync) -+{ -+ int retVal; -+ if (in->dirty) { -+ yaffs_flush_file_cache(in); -+ if(data_sync) /* Only sync data */ -+ retVal=YAFFS_OK; -+ else { -+ if (update_time) { -+#ifdef CONFIG_YAFFS_WINCE -+ yfsd_win_file_time_now(in->win_mtime); -+#else - -- T(YAFFS_TRACE_SCAN_DEBUG, -- (TSTR("Block scanning block %d state %d seq %d" TENDSTR), blk, -- state, sequenceNumber)); -+ in->yst_mtime = Y_CURRENT_TIME; - -+#endif -+ } - -- if (state == YAFFS_BLOCK_STATE_CHECKPOINT) { -- dev->blocksInCheckpoint++; -+ retVal = (yaffs_update_oh(in, NULL, 0, 0, 0, NULL) >= -+ 0) ? YAFFS_OK : YAFFS_FAIL; -+ } -+ } else { -+ retVal = YAFFS_OK; -+ } - -- } else if (state == YAFFS_BLOCK_STATE_DEAD) { -- T(YAFFS_TRACE_BAD_BLOCKS, -- (TSTR("block %d is bad" TENDSTR), blk)); -- } else if (state == YAFFS_BLOCK_STATE_EMPTY) { -- T(YAFFS_TRACE_SCAN_DEBUG, -- (TSTR("Block empty " TENDSTR))); -- dev->nErasedBlocks++; -- dev->nFreeChunks += dev->nChunksPerBlock; -- } else if (state == YAFFS_BLOCK_STATE_NEEDS_SCANNING) { -+ return retVal; - -- /* Determine the highest sequence number */ -- if (sequenceNumber >= YAFFS_LOWEST_SEQUENCE_NUMBER && -- sequenceNumber < YAFFS_HIGHEST_SEQUENCE_NUMBER) { -+} - -- blockIndex[nBlocksToScan].seq = sequenceNumber; -- blockIndex[nBlocksToScan].block = blk; -+static int yaffs_generic_obj_del(yaffs_obj_t *in) -+{ - -- nBlocksToScan++; -+ /* First off, invalidate the file's data in the cache, without flushing. */ -+ yaffs_invalidate_whole_cache(in); - -- if (sequenceNumber >= dev->sequenceNumber) -- dev->sequenceNumber = sequenceNumber; -- } else { -- /* TODO: Nasty sequence number! */ -- T(YAFFS_TRACE_SCAN, -- (TSTR -- ("Block scanning block %d has bad sequence number %d" -- TENDSTR), blk, sequenceNumber)); -+ if (in->my_dev->param.is_yaffs2 && (in->parent != in->my_dev->del_dir)) { -+ /* Move to the unlinked directory so we have a record that it was deleted. */ -+ yaffs_change_obj_name(in, in->my_dev->del_dir, _Y("deleted"), 0, 0); - -- } -- } - } - -- T(YAFFS_TRACE_SCAN, -- (TSTR("%d blocks to be sorted..." TENDSTR), nBlocksToScan)); -+ yaffs_remove_obj_from_dir(in); -+ yaffs_chunk_del(in->my_dev, in->hdr_chunk, 1, __LINE__); -+ in->hdr_chunk = 0; - -+ yaffs_free_obj(in); -+ return YAFFS_OK; - -+} - -- YYIELD(); -+/* yaffs_del_file deletes the whole file data -+ * and the inode associated with the file. -+ * It does not delete the links associated with the file. -+ */ -+static int yaffs_unlink_file_if_needed(yaffs_obj_t *in) -+{ - -- /* Sort the blocks */ --#ifndef CONFIG_YAFFS_USE_OWN_SORT -- { -- /* Use qsort now. */ -- yaffs_qsort(blockIndex, nBlocksToScan, sizeof(yaffs_BlockIndex), ybicmp); -- } --#else -- { -- /* Dungy old bubble sort... */ -+ int retVal; -+ int immediateDeletion = 0; -+ yaffs_dev_t *dev = in->my_dev; - -- yaffs_BlockIndex temp; -- int i; -- int j; -+ if (!in->my_inode) -+ immediateDeletion = 1; - -- for (i = 0; i < nBlocksToScan; i++) -- for (j = i + 1; j < nBlocksToScan; j++) -- if (blockIndex[i].seq > blockIndex[j].seq) { -- temp = blockIndex[j]; -- blockIndex[j] = blockIndex[i]; -- blockIndex[i] = temp; -- } -+ if (immediateDeletion) { -+ retVal = -+ yaffs_change_obj_name(in, in->my_dev->del_dir, -+ _Y("deleted"), 0, 0); -+ T(YAFFS_TRACE_TRACING, -+ (TSTR("yaffs: immediate deletion of file %d" TENDSTR), -+ in->obj_id)); -+ in->deleted = 1; -+ in->my_dev->n_deleted_files++; -+ if (dev->param.disable_soft_del || dev->param.is_yaffs2) -+ yaffs_resize_file(in, 0); -+ yaffs_soft_del_file(in); -+ } else { -+ retVal = -+ yaffs_change_obj_name(in, in->my_dev->unlinked_dir, -+ _Y("unlinked"), 0, 0); - } --#endif - -- YYIELD(); - -- T(YAFFS_TRACE_SCAN, (TSTR("...done" TENDSTR))); -+ return retVal; -+} - -- /* Now scan the blocks looking at the data. */ -- startIterator = 0; -- endIterator = nBlocksToScan - 1; -- T(YAFFS_TRACE_SCAN_DEBUG, -- (TSTR("%d blocks to be scanned" TENDSTR), nBlocksToScan)); -+int yaffs_del_file(yaffs_obj_t *in) -+{ -+ int retVal = YAFFS_OK; -+ int deleted; /* Need to cache value on stack if in is freed */ -+ yaffs_dev_t *dev = in->my_dev; - -- /* For each block.... backwards */ -- for (blockIterator = endIterator; !alloc_failed && blockIterator >= startIterator; -- blockIterator--) { -- /* Cooperative multitasking! This loop can run for so -- long that watchdog timers expire. */ -- YYIELD(); -+ if (dev->param.disable_soft_del || dev->param.is_yaffs2) -+ yaffs_resize_file(in, 0); - -- /* get the block to scan in the correct order */ -- blk = blockIndex[blockIterator].block; -+ if (in->n_data_chunks > 0) { -+ /* Use soft deletion if there is data in the file. -+ * That won't be the case if it has been resized to zero. -+ */ -+ if (!in->unlinked) -+ retVal = yaffs_unlink_file_if_needed(in); - -- bi = yaffs_GetBlockInfo(dev, blk); -+ deleted = in->deleted; - -+ if (retVal == YAFFS_OK && in->unlinked && !in->deleted) { -+ in->deleted = 1; -+ deleted = 1; -+ in->my_dev->n_deleted_files++; -+ yaffs_soft_del_file(in); -+ } -+ return deleted ? YAFFS_OK : YAFFS_FAIL; -+ } else { -+ /* The file has no data chunks so we toss it immediately */ -+ yaffs_free_tnode(in->my_dev, in->variant.file_variant.top); -+ in->variant.file_variant.top = NULL; -+ yaffs_generic_obj_del(in); - -- state = bi->blockState; -+ return YAFFS_OK; -+ } -+} - -- deleted = 0; -+static int yaffs_is_non_empty_dir(yaffs_obj_t *obj) -+{ -+ return (obj->variant_type == YAFFS_OBJECT_TYPE_DIRECTORY) && -+ !(ylist_empty(&obj->variant.dir_variant.children)); -+} - -- /* For each chunk in each block that needs scanning.... */ -- foundChunksInBlock = 0; -- for (c = dev->nChunksPerBlock - 1; -- !alloc_failed && c >= 0 && -- (state == YAFFS_BLOCK_STATE_NEEDS_SCANNING || -- state == YAFFS_BLOCK_STATE_ALLOCATING); c--) { -- /* Scan backwards... -- * Read the tags and decide what to do -- */ -+static int yaffs_del_dir(yaffs_obj_t *obj) -+{ -+ /* First check that the directory is empty. */ -+ if (yaffs_is_non_empty_dir(obj)) -+ return YAFFS_FAIL; - -- chunk = blk * dev->nChunksPerBlock + c; -+ return yaffs_generic_obj_del(obj); -+} - -- result = yaffs_ReadChunkWithTagsFromNAND(dev, chunk, NULL, -- &tags); -+static int yaffs_del_symlink(yaffs_obj_t *in) -+{ -+ if(in->variant.symlink_variant.alias) -+ YFREE(in->variant.symlink_variant.alias); -+ in->variant.symlink_variant.alias=NULL; - -- /* Let's have a good look at this chunk... */ -+ return yaffs_generic_obj_del(in); -+} - -- if (!tags.chunkUsed) { -- /* An unassigned chunk in the block. -- * If there are used chunks after this one, then -- * it is a chunk that was skipped due to failing the erased -- * check. Just skip it so that it can be deleted. -- * But, more typically, We get here when this is an unallocated -- * chunk and his means that either the block is empty or -- * this is the one being allocated from -- */ -+static int yaffs_del_link(yaffs_obj_t *in) -+{ -+ /* remove this hardlink from the list assocaited with the equivalent -+ * object -+ */ -+ ylist_del_init(&in->hard_links); -+ return yaffs_generic_obj_del(in); -+} - -- if (foundChunksInBlock) { -- /* This is a chunk that was skipped due to failing the erased check */ -- } else if (c == 0) { -- /* We're looking at the first chunk in the block so the block is unused */ -- state = YAFFS_BLOCK_STATE_EMPTY; -- dev->nErasedBlocks++; -- } else { -- if (state == YAFFS_BLOCK_STATE_NEEDS_SCANNING || -- state == YAFFS_BLOCK_STATE_ALLOCATING) { -- if (dev->sequenceNumber == bi->sequenceNumber) { -- /* this is the block being allocated from */ -- -- T(YAFFS_TRACE_SCAN, -- (TSTR -- (" Allocating from %d %d" -- TENDSTR), blk, c)); -- -- state = YAFFS_BLOCK_STATE_ALLOCATING; -- dev->allocationBlock = blk; -- dev->allocationPage = c; -- dev->allocationBlockFinder = blk; -- } else { -- /* This is a partially written block that is not -- * the current allocation block. This block must have -- * had a write failure, so set up for retirement. -- */ -- -- /* bi->needsRetiring = 1; ??? TODO */ -- bi->gcPrioritise = 1; -- -- T(YAFFS_TRACE_ALWAYS, -- (TSTR("Partially written block %d detected" TENDSTR), -- blk)); -- } -- } -- } -+int yaffs_del_obj(yaffs_obj_t *obj) -+{ -+int retVal = -1; -+ switch (obj->variant_type) { -+ case YAFFS_OBJECT_TYPE_FILE: -+ retVal = yaffs_del_file(obj); -+ break; -+ case YAFFS_OBJECT_TYPE_DIRECTORY: -+ if(!ylist_empty(&obj->variant.dir_variant.dirty)){ -+ T(YAFFS_TRACE_BACKGROUND, (TSTR("Remove object %d from dirty directories" TENDSTR),obj->obj_id)); -+ ylist_del_init(&obj->variant.dir_variant.dirty); -+ } -+ return yaffs_del_dir(obj); -+ break; -+ case YAFFS_OBJECT_TYPE_SYMLINK: -+ retVal = yaffs_del_symlink(obj); -+ break; -+ case YAFFS_OBJECT_TYPE_HARDLINK: -+ retVal = yaffs_del_link(obj); -+ break; -+ case YAFFS_OBJECT_TYPE_SPECIAL: -+ retVal = yaffs_generic_obj_del(obj); -+ break; -+ case YAFFS_OBJECT_TYPE_UNKNOWN: -+ retVal = 0; -+ break; /* should not happen. */ -+ } - -- dev->nFreeChunks++; -+ return retVal; -+} - -- } else if (tags.eccResult == YAFFS_ECC_RESULT_UNFIXED) { -- T(YAFFS_TRACE_SCAN, -- (TSTR(" Unfixed ECC in chunk(%d:%d), chunk ignored"TENDSTR), -- blk, c)); -- -- dev->nFreeChunks++; -- -- } else if (tags.chunkId > 0) { -- /* chunkId > 0 so it is a data chunk... */ -- unsigned int endpos; -- __u32 chunkBase = -- (tags.chunkId - 1) * dev->nDataBytesPerChunk; -- -- foundChunksInBlock = 1; -- -- -- yaffs_SetChunkBit(dev, blk, c); -- bi->pagesInUse++; -- -- in = yaffs_FindOrCreateObjectByNumber(dev, -- tags. -- objectId, -- YAFFS_OBJECT_TYPE_FILE); -- if (!in) { -- /* Out of memory */ -- alloc_failed = 1; -- } -+static int yaffs_unlink_worker(yaffs_obj_t *obj) -+{ - -- if (in && -- in->variantType == YAFFS_OBJECT_TYPE_FILE -- && chunkBase < -- in->variant.fileVariant.shrinkSize) { -- /* This has not been invalidated by a resize */ -- if (!yaffs_PutChunkIntoFile(in, tags.chunkId, -- chunk, -1)) { -- alloc_failed = 1; -- } -+ int immediateDeletion = 0; - -- /* File size is calculated by looking at the data chunks if we have not -- * seen an object header yet. Stop this practice once we find an object header. -- */ -- endpos = -- (tags.chunkId - -- 1) * dev->nDataBytesPerChunk + -- tags.byteCount; -- -- if (!in->valid && /* have not got an object header yet */ -- in->variant.fileVariant. -- scannedFileSize < endpos) { -- in->variant.fileVariant. -- scannedFileSize = endpos; -- in->variant.fileVariant. -- fileSize = -- in->variant.fileVariant. -- scannedFileSize; -- } -+ if (!obj->my_inode) -+ immediateDeletion = 1; - -- } else if (in) { -- /* This chunk has been invalidated by a resize, so delete */ -- yaffs_DeleteChunk(dev, chunk, 1, __LINE__); -+ if(obj) -+ yaffs_update_parent(obj->parent); - -- } -- } else { -- /* chunkId == 0, so it is an ObjectHeader. -- * Thus, we read in the object header and make the object -- */ -- foundChunksInBlock = 1; -+ if (obj->variant_type == YAFFS_OBJECT_TYPE_HARDLINK) { -+ return yaffs_del_link(obj); -+ } else if (!ylist_empty(&obj->hard_links)) { -+ /* Curve ball: We're unlinking an object that has a hardlink. -+ * -+ * This problem arises because we are not strictly following -+ * The Linux link/inode model. -+ * -+ * We can't really delete the object. -+ * Instead, we do the following: -+ * - Select a hardlink. -+ * - Unhook it from the hard links -+ * - Move it from its parent directory (so that the rename can work) -+ * - Rename the object to the hardlink's name. -+ * - Delete the hardlink -+ */ - -- yaffs_SetChunkBit(dev, blk, c); -- bi->pagesInUse++; -+ yaffs_obj_t *hl; -+ yaffs_obj_t *parent; -+ int retVal; -+ YCHAR name[YAFFS_MAX_NAME_LENGTH + 1]; - -- oh = NULL; -- in = NULL; -+ hl = ylist_entry(obj->hard_links.next, yaffs_obj_t, hard_links); - -- if (tags.extraHeaderInfoAvailable) { -- in = yaffs_FindOrCreateObjectByNumber -- (dev, tags.objectId, -- tags.extraObjectType); -- if (!in) -- alloc_failed = 1; -- } -+ yaffs_get_obj_name(hl, name, YAFFS_MAX_NAME_LENGTH + 1); -+ parent = hl->parent; - -- if (!in || --#ifdef CONFIG_YAFFS_DISABLE_LAZY_LOAD -- !in->valid || --#endif -- tags.extraShadows || -- (!in->valid && -- (tags.objectId == YAFFS_OBJECTID_ROOT || -- tags.objectId == YAFFS_OBJECTID_LOSTNFOUND))) { -- -- /* If we don't have valid info then we need to read the chunk -- * TODO In future we can probably defer reading the chunk and -- * living with invalid data until needed. -- */ -+ ylist_del_init(&hl->hard_links); - -- result = yaffs_ReadChunkWithTagsFromNAND(dev, -- chunk, -- chunkData, -- NULL); -- -- oh = (yaffs_ObjectHeader *) chunkData; -- -- if (dev->inbandTags) { -- /* Fix up the header if they got corrupted by inband tags */ -- oh->shadowsObject = oh->inbandShadowsObject; -- oh->isShrink = oh->inbandIsShrink; -- } -+ yaffs_add_obj_to_dir(obj->my_dev->unlinked_dir, hl); - -- if (!in) { -- in = yaffs_FindOrCreateObjectByNumber(dev, tags.objectId, oh->type); -- if (!in) -- alloc_failed = 1; -- } -+ retVal = yaffs_change_obj_name(obj,parent, name, 0, 0); - -- } -+ if (retVal == YAFFS_OK) -+ retVal = yaffs_generic_obj_del(hl); - -- if (!in) { -- /* TODO Hoosterman we have a problem! */ -- T(YAFFS_TRACE_ERROR, -- (TSTR -- ("yaffs tragedy: Could not make object for object %d at chunk %d during scan" -- TENDSTR), tags.objectId, chunk)); -- continue; -- } -+ return retVal; - -- if (in->valid) { -- /* We have already filled this one. -- * We have a duplicate that will be discarded, but -- * we first have to suck out resize info if it is a file. -- */ -+ } else if (immediateDeletion) { -+ switch (obj->variant_type) { -+ case YAFFS_OBJECT_TYPE_FILE: -+ return yaffs_del_file(obj); -+ break; -+ case YAFFS_OBJECT_TYPE_DIRECTORY: -+ ylist_del_init(&obj->variant.dir_variant.dirty); -+ return yaffs_del_dir(obj); -+ break; -+ case YAFFS_OBJECT_TYPE_SYMLINK: -+ return yaffs_del_symlink(obj); -+ break; -+ case YAFFS_OBJECT_TYPE_SPECIAL: -+ return yaffs_generic_obj_del(obj); -+ break; -+ case YAFFS_OBJECT_TYPE_HARDLINK: -+ case YAFFS_OBJECT_TYPE_UNKNOWN: -+ default: -+ return YAFFS_FAIL; -+ } -+ } else if(yaffs_is_non_empty_dir(obj)) -+ return YAFFS_FAIL; -+ else -+ return yaffs_change_obj_name(obj, obj->my_dev->unlinked_dir, -+ _Y("unlinked"), 0, 0); -+} - -- if ((in->variantType == YAFFS_OBJECT_TYPE_FILE) && -- ((oh && -- oh->type == YAFFS_OBJECT_TYPE_FILE) || -- (tags.extraHeaderInfoAvailable && -- tags.extraObjectType == YAFFS_OBJECT_TYPE_FILE))) { -- __u32 thisSize = -- (oh) ? oh->fileSize : tags. -- extraFileLength; -- __u32 parentObjectId = -- (oh) ? oh-> -- parentObjectId : tags. -- extraParentObjectId; -- -- -- isShrink = -- (oh) ? oh->isShrink : tags. -- extraIsShrinkHeader; - -- /* If it is deleted (unlinked at start also means deleted) -- * we treat the file size as being zeroed at this point. -- */ -- if (parentObjectId == -- YAFFS_OBJECTID_DELETED -- || parentObjectId == -- YAFFS_OBJECTID_UNLINKED) { -- thisSize = 0; -- isShrink = 1; -- } -+static int yaffs_unlink_obj(yaffs_obj_t *obj) -+{ - -- if (isShrink && -- in->variant.fileVariant. -- shrinkSize > thisSize) { -- in->variant.fileVariant. -- shrinkSize = -- thisSize; -- } -+ if (obj && obj->unlink_allowed) -+ return yaffs_unlink_worker(obj); - -- if (isShrink) -- bi->hasShrinkHeader = 1; -+ return YAFFS_FAIL; - -- } -- /* Use existing - destroy this one. */ -- yaffs_DeleteChunk(dev, chunk, 1, __LINE__); -+} -+int yaffs_unlinker(yaffs_obj_t *dir, const YCHAR *name) -+{ -+ yaffs_obj_t *obj; - -- } -+ obj = yaffs_find_by_name(dir, name); -+ return yaffs_unlink_obj(obj); -+} - -- if (!in->valid && in->variantType != -- (oh ? oh->type : tags.extraObjectType)) -- T(YAFFS_TRACE_ERROR, ( -- TSTR("yaffs tragedy: Bad object type, " -- TCONT("%d != %d, for object %d at chunk ") -- TCONT("%d during scan") -- TENDSTR), oh ? -- oh->type : tags.extraObjectType, -- in->variantType, tags.objectId, -- chunk)); -- -- if (!in->valid && -- (tags.objectId == YAFFS_OBJECTID_ROOT || -- tags.objectId == -- YAFFS_OBJECTID_LOSTNFOUND)) { -- /* We only load some info, don't fiddle with directory structure */ -- in->valid = 1; -+/*----------------------- Initialisation Scanning ---------------------- */ - -- if (oh) { -- in->variantType = oh->type; -+void yaffs_handle_shadowed_obj(yaffs_dev_t *dev, int obj_id, -+ int backward_scanning) -+{ -+ yaffs_obj_t *obj; - -- in->yst_mode = oh->yst_mode; --#ifdef CONFIG_YAFFS_WINCE -- in->win_atime[0] = oh->win_atime[0]; -- in->win_ctime[0] = oh->win_ctime[0]; -- in->win_mtime[0] = oh->win_mtime[0]; -- in->win_atime[1] = oh->win_atime[1]; -- in->win_ctime[1] = oh->win_ctime[1]; -- in->win_mtime[1] = oh->win_mtime[1]; --#else -- in->yst_uid = oh->yst_uid; -- in->yst_gid = oh->yst_gid; -- in->yst_atime = oh->yst_atime; -- in->yst_mtime = oh->yst_mtime; -- in->yst_ctime = oh->yst_ctime; -- in->yst_rdev = oh->yst_rdev; -+ if (!backward_scanning) { -+ /* Handle YAFFS1 forward scanning case -+ * For YAFFS1 we always do the deletion -+ */ - --#endif -- } else { -- in->variantType = tags.extraObjectType; -- in->lazyLoaded = 1; -- } -+ } else { -+ /* Handle YAFFS2 case (backward scanning) -+ * If the shadowed object exists then ignore. -+ */ -+ obj = yaffs_find_by_number(dev, obj_id); -+ if(obj) -+ return; -+ } - -- in->hdrChunk = chunk; -+ /* Let's create it (if it does not exist) assuming it is a file so that it can do shrinking etc. -+ * We put it in unlinked dir to be cleaned up after the scanning -+ */ -+ obj = -+ yaffs_find_or_create_by_number(dev, obj_id, -+ YAFFS_OBJECT_TYPE_FILE); -+ if (!obj) -+ return; -+ obj->is_shadowed = 1; -+ yaffs_add_obj_to_dir(dev->unlinked_dir, obj); -+ obj->variant.file_variant.shrink_size = 0; -+ obj->valid = 1; /* So that we don't read any other info for this file */ - -- } else if (!in->valid) { -- /* we need to load this info */ -+} - -- in->valid = 1; -- in->hdrChunk = chunk; - -- if (oh) { -- in->variantType = oh->type; -+void yaffs_link_fixup(yaffs_dev_t *dev, yaffs_obj_t *hard_list) -+{ -+ yaffs_obj_t *hl; -+ yaffs_obj_t *in; - -- in->yst_mode = oh->yst_mode; --#ifdef CONFIG_YAFFS_WINCE -- in->win_atime[0] = oh->win_atime[0]; -- in->win_ctime[0] = oh->win_ctime[0]; -- in->win_mtime[0] = oh->win_mtime[0]; -- in->win_atime[1] = oh->win_atime[1]; -- in->win_ctime[1] = oh->win_ctime[1]; -- in->win_mtime[1] = oh->win_mtime[1]; --#else -- in->yst_uid = oh->yst_uid; -- in->yst_gid = oh->yst_gid; -- in->yst_atime = oh->yst_atime; -- in->yst_mtime = oh->yst_mtime; -- in->yst_ctime = oh->yst_ctime; -- in->yst_rdev = oh->yst_rdev; --#endif -+ while (hard_list) { -+ hl = hard_list; -+ hard_list = (yaffs_obj_t *) (hard_list->hard_links.next); -+ -+ in = yaffs_find_by_number(dev, -+ hl->variant.hardlink_variant. -+ equiv_id); - -- if (oh->shadowsObject > 0) -- yaffs_HandleShadowedObject(dev, -- oh-> -- shadowsObject, -- 1); -- -- -- yaffs_SetObjectName(in, oh->name); -- parent = -- yaffs_FindOrCreateObjectByNumber -- (dev, oh->parentObjectId, -- YAFFS_OBJECT_TYPE_DIRECTORY); -- -- fileSize = oh->fileSize; -- isShrink = oh->isShrink; -- equivalentObjectId = oh->equivalentObjectId; -+ if (in) { -+ /* Add the hardlink pointers */ -+ hl->variant.hardlink_variant.equiv_obj = in; -+ ylist_add(&hl->hard_links, &in->hard_links); -+ } else { -+ /* Todo Need to report/handle this better. -+ * Got a problem... hardlink to a non-existant object -+ */ -+ hl->variant.hardlink_variant.equiv_obj = NULL; -+ YINIT_LIST_HEAD(&hl->hard_links); - -- } else { -- in->variantType = tags.extraObjectType; -- parent = -- yaffs_FindOrCreateObjectByNumber -- (dev, tags.extraParentObjectId, -- YAFFS_OBJECT_TYPE_DIRECTORY); -- fileSize = tags.extraFileLength; -- isShrink = tags.extraIsShrinkHeader; -- equivalentObjectId = tags.extraEquivalentObjectId; -- in->lazyLoaded = 1; -+ } -+ } -+} - -- } -- in->dirty = 0; - -- if (!parent) -- alloc_failed = 1; -+static void yaffs_strip_deleted_objs(yaffs_dev_t *dev) -+{ -+ /* -+ * Sort out state of unlinked and deleted objects after scanning. -+ */ -+ struct ylist_head *i; -+ struct ylist_head *n; -+ yaffs_obj_t *l; - -- /* directory stuff... -- * hook up to parent -- */ -+ if (dev->read_only) -+ return; - -- if (parent && parent->variantType == -- YAFFS_OBJECT_TYPE_UNKNOWN) { -- /* Set up as a directory */ -- parent->variantType = -- YAFFS_OBJECT_TYPE_DIRECTORY; -- YINIT_LIST_HEAD(&parent->variant. -- directoryVariant. -- children); -- } else if (!parent || parent->variantType != -- YAFFS_OBJECT_TYPE_DIRECTORY) { -- /* Hoosterman, another problem.... -- * We're trying to use a non-directory as a directory -- */ -+ /* Soft delete all the unlinked files */ -+ ylist_for_each_safe(i, n, -+ &dev->unlinked_dir->variant.dir_variant.children) { -+ if (i) { -+ l = ylist_entry(i, yaffs_obj_t, siblings); -+ yaffs_del_obj(l); -+ } -+ } - -- T(YAFFS_TRACE_ERROR, -- (TSTR -- ("yaffs tragedy: attempting to use non-directory as a directory in scan. Put in lost+found." -- TENDSTR))); -- parent = dev->lostNFoundDir; -- } -+ ylist_for_each_safe(i, n, -+ &dev->del_dir->variant.dir_variant.children) { -+ if (i) { -+ l = ylist_entry(i, yaffs_obj_t, siblings); -+ yaffs_del_obj(l); -+ } -+ } - -- yaffs_AddObjectToDirectory(parent, in); -+} - -- itsUnlinked = (parent == dev->deletedDir) || -- (parent == dev->unlinkedDir); -+/* -+ * This code iterates through all the objects making sure that they are rooted. -+ * Any unrooted objects are re-rooted in lost+found. -+ * An object needs to be in one of: -+ * - Directly under deleted, unlinked -+ * - Directly or indirectly under root. -+ * -+ * Note: -+ * This code assumes that we don't ever change the current relationships between -+ * directories: -+ * root_dir->parent == unlinked_dir->parent == del_dir->parent == NULL -+ * lostNfound->parent == root_dir -+ * -+ * This fixes the problem where directories might have inadvertently been deleted -+ * leaving the object "hanging" without being rooted in the directory tree. -+ */ -+ -+static int yaffs_has_null_parent(yaffs_dev_t *dev, yaffs_obj_t *obj) -+{ -+ return (obj == dev->del_dir || -+ obj == dev->unlinked_dir|| -+ obj == dev->root_dir); -+} - -- if (isShrink) { -- /* Mark the block as having a shrinkHeader */ -- bi->hasShrinkHeader = 1; -- } -+static void yaffs_fix_hanging_objs(yaffs_dev_t *dev) -+{ -+ yaffs_obj_t *obj; -+ yaffs_obj_t *parent; -+ int i; -+ struct ylist_head *lh; -+ struct ylist_head *n; -+ int depthLimit; -+ int hanging; - -- /* Note re hardlinks. -- * Since we might scan a hardlink before its equivalent object is scanned -- * we put them all in a list. -- * After scanning is complete, we should have all the objects, so we run -- * through this list and fix up all the chains. -- */ -+ if (dev->read_only) -+ return; - -- switch (in->variantType) { -- case YAFFS_OBJECT_TYPE_UNKNOWN: -- /* Todo got a problem */ -- break; -- case YAFFS_OBJECT_TYPE_FILE: -- -- if (in->variant.fileVariant. -- scannedFileSize < fileSize) { -- /* This covers the case where the file size is greater -- * than where the data is -- * This will happen if the file is resized to be larger -- * than its current data extents. -- */ -- in->variant.fileVariant.fileSize = fileSize; -- in->variant.fileVariant.scannedFileSize = -- in->variant.fileVariant.fileSize; -- } -+ /* Iterate through the objects in each hash entry, -+ * looking at each object. -+ * Make sure it is rooted. -+ */ - -- if (isShrink && -- in->variant.fileVariant.shrinkSize > fileSize) { -- in->variant.fileVariant.shrinkSize = fileSize; -- } -+ for (i = 0; i < YAFFS_NOBJECT_BUCKETS; i++) { -+ ylist_for_each_safe(lh, n, &dev->obj_bucket[i].list) { -+ if (lh) { -+ obj = ylist_entry(lh, yaffs_obj_t, hash_link); -+ parent= obj->parent; -+ -+ if(yaffs_has_null_parent(dev,obj)){ -+ /* These directories are not hanging */ -+ hanging = 0; -+ } -+ else if(!parent || parent->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) -+ hanging = 1; -+ else if(yaffs_has_null_parent(dev,parent)) -+ hanging = 0; -+ else { -+ /* -+ * Need to follow the parent chain to see if it is hanging. -+ */ -+ hanging = 0; -+ depthLimit=100; - -- break; -- case YAFFS_OBJECT_TYPE_HARDLINK: -- if (!itsUnlinked) { -- in->variant.hardLinkVariant.equivalentObjectId = -- equivalentObjectId; -- in->hardLinks.next = -- (struct ylist_head *) hardList; -- hardList = in; -- } -- break; -- case YAFFS_OBJECT_TYPE_DIRECTORY: -- /* Do nothing */ -- break; -- case YAFFS_OBJECT_TYPE_SPECIAL: -- /* Do nothing */ -- break; -- case YAFFS_OBJECT_TYPE_SYMLINK: -- if (oh) { -- in->variant.symLinkVariant.alias = -- yaffs_CloneString(oh->alias); -- if (!in->variant.symLinkVariant.alias) -- alloc_failed = 1; -- } -- break; -+ while(parent != dev->root_dir && -+ parent->parent && -+ parent->parent->variant_type == YAFFS_OBJECT_TYPE_DIRECTORY && -+ depthLimit > 0){ -+ parent = parent->parent; -+ depthLimit--; - } -- -+ if(parent != dev->root_dir) -+ hanging = 1; -+ } -+ if(hanging){ -+ T(YAFFS_TRACE_SCAN, -+ (TSTR("Hanging object %d moved to lost and found" TENDSTR), -+ obj->obj_id)); -+ yaffs_add_obj_to_dir(dev->lost_n_found,obj); - } -- - } -+ } -+ } -+} - -- } /* End of scanning for each chunk */ - -- if (state == YAFFS_BLOCK_STATE_NEEDS_SCANNING) { -- /* If we got this far while scanning, then the block is fully allocated. */ -- state = YAFFS_BLOCK_STATE_FULL; -- } -+/* -+ * Delete directory contents for cleaning up lost and found. -+ */ -+static void yaffs_del_dir_contents(yaffs_obj_t *dir) -+{ -+ yaffs_obj_t *obj; -+ struct ylist_head *lh; -+ struct ylist_head *n; - -- bi->blockState = state; -+ if(dir->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) -+ YBUG(); -+ -+ ylist_for_each_safe(lh, n, &dir->variant.dir_variant.children) { -+ if (lh) { -+ obj = ylist_entry(lh, yaffs_obj_t, siblings); -+ if(obj->variant_type == YAFFS_OBJECT_TYPE_DIRECTORY) -+ yaffs_del_dir_contents(obj); -+ -+ T(YAFFS_TRACE_SCAN, -+ (TSTR("Deleting lost_found object %d" TENDSTR), -+ obj->obj_id)); - -- /* Now let's see if it was dirty */ -- if (bi->pagesInUse == 0 && -- !bi->hasShrinkHeader && -- bi->blockState == YAFFS_BLOCK_STATE_FULL) { -- yaffs_BlockBecameDirty(dev, blk); -+ /* Need to use UnlinkObject since Delete would not handle -+ * hardlinked objects correctly. -+ */ -+ yaffs_unlink_obj(obj); - } -- - } -+ -+} - -- if (altBlockIndex) -- YFREE_ALT(blockIndex); -- else -- YFREE(blockIndex); -+static void yaffs_empty_l_n_f(yaffs_dev_t *dev) -+{ -+ yaffs_del_dir_contents(dev->lost_n_found); -+} - -- /* Ok, we've done all the scanning. -- * Fix up the hard link chains. -- * We should now have scanned all the objects, now it's time to add these -- * hardlinks. -- */ -- yaffs_HardlinkFixup(dev, hardList); -+static void yaffs_check_obj_details_loaded(yaffs_obj_t *in) -+{ -+ __u8 *chunkData; -+ yaffs_obj_header *oh; -+ yaffs_dev_t *dev; -+ yaffs_ext_tags tags; -+ int result; -+ int alloc_failed = 0; - -+ if (!in) -+ return; - -- yaffs_ReleaseTempBuffer(dev, chunkData, __LINE__); -+ dev = in->my_dev; - -- if (alloc_failed) -- return YAFFS_FAIL; -+#if 0 -+ T(YAFFS_TRACE_SCAN, (TSTR("details for object %d %s loaded" TENDSTR), -+ in->obj_id, -+ in->lazy_loaded ? "not yet" : "already")); -+#endif - -- T(YAFFS_TRACE_SCAN, (TSTR("yaffs_ScanBackwards ends" TENDSTR))); -+ if (in->lazy_loaded && in->hdr_chunk > 0) { -+ in->lazy_loaded = 0; -+ chunkData = yaffs_get_temp_buffer(dev, __LINE__); - -- return YAFFS_OK; --} -+ result = yaffs_rd_chunk_tags_nand(dev, in->hdr_chunk, chunkData, &tags); -+ oh = (yaffs_obj_header *) chunkData; - --/*------------------------------ Directory Functions ----------------------------- */ -+ in->yst_mode = oh->yst_mode; -+#ifdef CONFIG_YAFFS_WINCE -+ in->win_atime[0] = oh->win_atime[0]; -+ in->win_ctime[0] = oh->win_ctime[0]; -+ in->win_mtime[0] = oh->win_mtime[0]; -+ in->win_atime[1] = oh->win_atime[1]; -+ in->win_ctime[1] = oh->win_ctime[1]; -+ in->win_mtime[1] = oh->win_mtime[1]; -+#else -+ in->yst_uid = oh->yst_uid; -+ in->yst_gid = oh->yst_gid; -+ in->yst_atime = oh->yst_atime; -+ in->yst_mtime = oh->yst_mtime; -+ in->yst_ctime = oh->yst_ctime; -+ in->yst_rdev = oh->yst_rdev; - --static void yaffs_VerifyObjectInDirectory(yaffs_Object *obj) --{ -- struct ylist_head *lh; -- yaffs_Object *listObj; -+#endif -+ yaffs_set_obj_name_from_oh(in, oh); - -- int count = 0; -+ if (in->variant_type == YAFFS_OBJECT_TYPE_SYMLINK) { -+ in->variant.symlink_variant.alias = -+ yaffs_clone_str(oh->alias); -+ if (!in->variant.symlink_variant.alias) -+ alloc_failed = 1; /* Not returned to caller */ -+ } - -- if (!obj) { -- T(YAFFS_TRACE_ALWAYS, (TSTR("No object to verify" TENDSTR))); -- YBUG(); -- return; -+ yaffs_release_temp_buffer(dev, chunkData, __LINE__); - } -+} - -- if (yaffs_SkipVerification(obj->myDev)) -- return; -+/*------------------------------ Directory Functions ----------------------------- */ - -- if (!obj->parent) { -- T(YAFFS_TRACE_ALWAYS, (TSTR("Object does not have parent" TENDSTR))); -- YBUG(); -+/* -+ *yaffs_update_parent() handles fixing a directories mtime and ctime when a new -+ * link (ie. name) is created or deleted in the directory. -+ * -+ * ie. -+ * create dir/a : update dir's mtime/ctime -+ * rm dir/a: update dir's mtime/ctime -+ * modify dir/a: don't update dir's mtimme/ctime -+ * -+ * This can be handled immediately or defered. Defering helps reduce the number -+ * of updates when many files in a directory are changed within a brief period. -+ * -+ * If the directory updating is defered then yaffs_update_dirty_dirs must be -+ * called periodically. -+ */ -+ -+static void yaffs_update_parent(yaffs_obj_t *obj) -+{ -+ yaffs_dev_t *dev; -+ if(!obj) - return; -- } -- -- if (obj->parent->variantType != YAFFS_OBJECT_TYPE_DIRECTORY) { -- T(YAFFS_TRACE_ALWAYS, (TSTR("Parent is not directory" TENDSTR))); -- YBUG(); -- } -- -- /* Iterate through the objects in each hash entry */ -+#ifndef CONFIG_YAFFS_WINCE - -- ylist_for_each(lh, &obj->parent->variant.directoryVariant.children) { -- if (lh) { -- listObj = ylist_entry(lh, yaffs_Object, siblings); -- yaffs_VerifyObject(listObj); -- if (obj == listObj) -- count++; -+ dev = obj->my_dev; -+ obj->dirty = 1; -+ obj->yst_mtime = obj->yst_ctime = Y_CURRENT_TIME; -+ if(dev->param.defered_dir_update){ -+ struct ylist_head *link = &obj->variant.dir_variant.dirty; -+ -+ if(ylist_empty(link)){ -+ ylist_add(link,&dev->dirty_dirs); -+ T(YAFFS_TRACE_BACKGROUND, (TSTR("Added object %d to dirty directories" TENDSTR),obj->obj_id)); - } -- } - -- if (count != 1) { -- T(YAFFS_TRACE_ALWAYS, (TSTR("Object in directory %d times" TENDSTR), count)); -- YBUG(); -- } -+ } else -+ yaffs_update_oh(obj, NULL, 0, 0, 0, NULL); -+#endif - } - --static void yaffs_VerifyDirectory(yaffs_Object *directory) -+void yaffs_update_dirty_dirs(yaffs_dev_t *dev) - { -- struct ylist_head *lh; -- yaffs_Object *listObj; -- -- if (!directory) { -- YBUG(); -- return; -- } -+ struct ylist_head *link; -+ yaffs_obj_t *obj; -+ yaffs_dir_s *dS; -+ yaffs_obj_variant *oV; - -- if (yaffs_SkipFullVerification(directory->myDev)) -- return; -+ T(YAFFS_TRACE_BACKGROUND, (TSTR("Update dirty directories" TENDSTR))); - -- if (directory->variantType != YAFFS_OBJECT_TYPE_DIRECTORY) { -- T(YAFFS_TRACE_ALWAYS, (TSTR("Directory has wrong type: %d" TENDSTR), directory->variantType)); -- YBUG(); -- } -+ while(!ylist_empty(&dev->dirty_dirs)){ -+ link = dev->dirty_dirs.next; -+ ylist_del_init(link); -+ -+ dS=ylist_entry(link,yaffs_dir_s,dirty); -+ oV = ylist_entry(dS,yaffs_obj_variant,dir_variant); -+ obj = ylist_entry(oV,yaffs_obj_t,variant); - -- /* Iterate through the objects in each hash entry */ -+ T(YAFFS_TRACE_BACKGROUND, (TSTR("Update directory %d" TENDSTR), obj->obj_id)); - -- ylist_for_each(lh, &directory->variant.directoryVariant.children) { -- if (lh) { -- listObj = ylist_entry(lh, yaffs_Object, siblings); -- if (listObj->parent != directory) { -- T(YAFFS_TRACE_ALWAYS, (TSTR("Object in directory list has wrong parent %p" TENDSTR), listObj->parent)); -- YBUG(); -- } -- yaffs_VerifyObjectInDirectory(listObj); -- } -+ if(obj->dirty) -+ yaffs_update_oh(obj, NULL, 0, 0, 0, NULL); - } - } - -- --static void yaffs_RemoveObjectFromDirectory(yaffs_Object *obj) -+static void yaffs_remove_obj_from_dir(yaffs_obj_t *obj) - { -- yaffs_Device *dev = obj->myDev; -- yaffs_Object *parent; -+ yaffs_dev_t *dev = obj->my_dev; -+ yaffs_obj_t *parent; - -- yaffs_VerifyObjectInDirectory(obj); -+ yaffs_verify_obj_in_dir(obj); - parent = obj->parent; - -- yaffs_VerifyDirectory(parent); -+ yaffs_verify_dir(parent); - -- if (dev && dev->removeObjectCallback) -- dev->removeObjectCallback(obj); -+ if (dev && dev->param.remove_obj_fn) -+ dev->param.remove_obj_fn(obj); - - - ylist_del_init(&obj->siblings); - obj->parent = NULL; -- -- yaffs_VerifyDirectory(parent); -+ -+ yaffs_verify_dir(parent); - } - -- --static void yaffs_AddObjectToDirectory(yaffs_Object *directory, -- yaffs_Object *obj) -+void yaffs_add_obj_to_dir(yaffs_obj_t *directory, -+ yaffs_obj_t *obj) - { - if (!directory) { - T(YAFFS_TRACE_ALWAYS, -@@ -6699,7 +4495,7 @@ static void yaffs_AddObjectToDirectory(y - YBUG(); - return; - } -- if (directory->variantType != YAFFS_OBJECT_TYPE_DIRECTORY) { -+ if (directory->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) { - T(YAFFS_TRACE_ALWAYS, - (TSTR - ("tragedy: Trying to add an object to a non-directory" -@@ -6713,27 +4509,27 @@ static void yaffs_AddObjectToDirectory(y - } - - -- yaffs_VerifyDirectory(directory); -+ yaffs_verify_dir(directory); - -- yaffs_RemoveObjectFromDirectory(obj); -+ yaffs_remove_obj_from_dir(obj); - - - /* Now add it */ -- ylist_add(&obj->siblings, &directory->variant.directoryVariant.children); -+ ylist_add(&obj->siblings, &directory->variant.dir_variant.children); - obj->parent = directory; - -- if (directory == obj->myDev->unlinkedDir -- || directory == obj->myDev->deletedDir) { -+ if (directory == obj->my_dev->unlinked_dir -+ || directory == obj->my_dev->del_dir) { - obj->unlinked = 1; -- obj->myDev->nUnlinkedFiles++; -- obj->renameAllowed = 0; -+ obj->my_dev->n_unlinked_files++; -+ obj->rename_allowed = 0; - } - -- yaffs_VerifyDirectory(directory); -- yaffs_VerifyObjectInDirectory(obj); -+ yaffs_verify_dir(directory); -+ yaffs_verify_obj_in_dir(obj); - } - --yaffs_Object *yaffs_FindObjectByName(yaffs_Object *directory, -+yaffs_obj_t *yaffs_find_by_name(yaffs_obj_t *directory, - const YCHAR *name) - { - int sum; -@@ -6741,7 +4537,7 @@ yaffs_Object *yaffs_FindObjectByName(yaf - struct ylist_head *i; - YCHAR buffer[YAFFS_MAX_NAME_LENGTH + 1]; - -- yaffs_Object *l; -+ yaffs_obj_t *l; - - if (!name) - return NULL; -@@ -6749,39 +4545,39 @@ yaffs_Object *yaffs_FindObjectByName(yaf - if (!directory) { - T(YAFFS_TRACE_ALWAYS, - (TSTR -- ("tragedy: yaffs_FindObjectByName: null pointer directory" -+ ("tragedy: yaffs_find_by_name: null pointer directory" - TENDSTR))); - YBUG(); - return NULL; - } -- if (directory->variantType != YAFFS_OBJECT_TYPE_DIRECTORY) { -+ if (directory->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) { - T(YAFFS_TRACE_ALWAYS, - (TSTR -- ("tragedy: yaffs_FindObjectByName: non-directory" TENDSTR))); -+ ("tragedy: yaffs_find_by_name: non-directory" TENDSTR))); - YBUG(); - } - -- sum = yaffs_CalcNameSum(name); -+ sum = yaffs_calc_name_sum(name); - -- ylist_for_each(i, &directory->variant.directoryVariant.children) { -+ ylist_for_each(i, &directory->variant.dir_variant.children) { - if (i) { -- l = ylist_entry(i, yaffs_Object, siblings); -+ l = ylist_entry(i, yaffs_obj_t, siblings); - - if (l->parent != directory) - YBUG(); - -- yaffs_CheckObjectDetailsLoaded(l); -+ yaffs_check_obj_details_loaded(l); - - /* Special case for lost-n-found */ -- if (l->objectId == YAFFS_OBJECTID_LOSTNFOUND) { -+ if (l->obj_id == YAFFS_OBJECTID_LOSTNFOUND) { - if (yaffs_strcmp(name, YAFFS_LOSTNFOUND_NAME) == 0) - return l; -- } else if (yaffs_SumCompare(l->sum, sum) || l->hdrChunk <= 0) { -+ } else if (yaffs_sum_cmp(l->sum, sum) || l->hdr_chunk <= 0) { - /* LostnFound chunk called Objxxx - * Do a real check - */ -- yaffs_GetObjectName(l, buffer, -- YAFFS_MAX_NAME_LENGTH); -+ yaffs_get_obj_name(l, buffer, -+ YAFFS_MAX_NAME_LENGTH + 1); - if (yaffs_strncmp(name, buffer, YAFFS_MAX_NAME_LENGTH) == 0) - return l; - } -@@ -6793,31 +4589,31 @@ yaffs_Object *yaffs_FindObjectByName(yaf - - - #if 0 --int yaffs_ApplyToDirectoryChildren(yaffs_Object *theDir, -- int (*fn) (yaffs_Object *)) -+int yaffs_ApplyToDirectoryChildren(yaffs_obj_t *the_dir, -+ int (*fn) (yaffs_obj_t *)) - { - struct ylist_head *i; -- yaffs_Object *l; -+ yaffs_obj_t *l; - -- if (!theDir) { -+ if (!the_dir) { - T(YAFFS_TRACE_ALWAYS, - (TSTR -- ("tragedy: yaffs_FindObjectByName: null pointer directory" -+ ("tragedy: yaffs_find_by_name: null pointer directory" - TENDSTR))); - YBUG(); - return YAFFS_FAIL; - } -- if (theDir->variantType != YAFFS_OBJECT_TYPE_DIRECTORY) { -+ if (the_dir->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) { - T(YAFFS_TRACE_ALWAYS, - (TSTR -- ("tragedy: yaffs_FindObjectByName: non-directory" TENDSTR))); -+ ("tragedy: yaffs_find_by_name: non-directory" TENDSTR))); - YBUG(); - return YAFFS_FAIL; - } - -- ylist_for_each(i, &theDir->variant.directoryVariant.children) { -+ ylist_for_each(i, &the_dir->variant.dir_variant.children) { - if (i) { -- l = ylist_entry(i, yaffs_Object, siblings); -+ l = ylist_entry(i, yaffs_obj_t, siblings); - if (l && !fn(l)) - return YAFFS_FAIL; - } -@@ -6832,82 +4628,175 @@ int yaffs_ApplyToDirectoryChildren(yaffs - * actual object. - */ - --yaffs_Object *yaffs_GetEquivalentObject(yaffs_Object *obj) -+yaffs_obj_t *yaffs_get_equivalent_obj(yaffs_obj_t *obj) - { -- if (obj && obj->variantType == YAFFS_OBJECT_TYPE_HARDLINK) { -+ if (obj && obj->variant_type == YAFFS_OBJECT_TYPE_HARDLINK) { - /* We want the object id of the equivalent object, not this one */ -- obj = obj->variant.hardLinkVariant.equivalentObject; -- yaffs_CheckObjectDetailsLoaded(obj); -+ obj = obj->variant.hardlink_variant.equiv_obj; -+ yaffs_check_obj_details_loaded(obj); - } - return obj; - } - --int yaffs_GetObjectName(yaffs_Object *obj, YCHAR *name, int buffSize) --{ -- memset(name, 0, buffSize * sizeof(YCHAR)); -- -- yaffs_CheckObjectDetailsLoaded(obj); -+/* -+ * A note or two on object names. -+ * * If the object name is missing, we then make one up in the form objnnn -+ * -+ * * ASCII names are stored in the object header's name field from byte zero -+ * * Unicode names are historically stored starting from byte zero. -+ * -+ * Then there are automatic Unicode names... -+ * The purpose of these is to save names in a way that can be read as -+ * ASCII or Unicode names as appropriate, thus allowing a Unicode and ASCII -+ * system to share files. -+ * -+ * These automatic unicode are stored slightly differently... -+ * - If the name can fit in the ASCII character space then they are saved as -+ * ascii names as per above. -+ * - If the name needs Unicode then the name is saved in Unicode -+ * starting at oh->name[1]. - -- if (obj->objectId == YAFFS_OBJECTID_LOSTNFOUND) { -- yaffs_strncpy(name, YAFFS_LOSTNFOUND_NAME, buffSize - 1); -- } else if (obj->hdrChunk <= 0) { -+ */ -+static void yaffs_fix_null_name(yaffs_obj_t * obj,YCHAR * name, int buffer_size) -+{ -+ /* Create an object name if we could not find one. */ -+ if(yaffs_strnlen(name,YAFFS_MAX_NAME_LENGTH) == 0){ - YCHAR locName[20]; - YCHAR numString[20]; - YCHAR *x = &numString[19]; -- unsigned v = obj->objectId; -+ unsigned v = obj->obj_id; - numString[19] = 0; -- while (v > 0) { -+ while(v>0){ - x--; - *x = '0' + (v % 10); - v /= 10; - } - /* make up a name */ - yaffs_strcpy(locName, YAFFS_LOSTNFOUND_PREFIX); -- yaffs_strcat(locName, x); -- yaffs_strncpy(name, locName, buffSize - 1); -+ yaffs_strcat(locName,x); -+ yaffs_strncpy(name, locName, buffer_size - 1); -+ } -+} -+ -+static void yaffs_load_name_from_oh(yaffs_dev_t *dev,YCHAR *name, const YCHAR *ohName, int bufferSize) -+{ -+#ifdef CONFIG_YAFFS_AUTO_UNICODE -+ if(dev->param.auto_unicode){ -+ if(*ohName){ -+ /* It is an ASCII name, so do an ASCII to unicode conversion */ -+ const char *asciiOhName = (const char *)ohName; -+ int n = bufferSize - 1; -+ while(n > 0 && *asciiOhName){ -+ *name = *asciiOhName; -+ name++; -+ asciiOhName++; -+ n--; -+ } -+ } else -+ yaffs_strncpy(name,ohName+1, bufferSize -1); -+ } else -+#endif -+ yaffs_strncpy(name, ohName, bufferSize - 1); -+} -+ -+ -+static void yaffs_load_oh_from_name(yaffs_dev_t *dev, YCHAR *ohName, const YCHAR *name) -+{ -+#ifdef CONFIG_YAFFS_AUTO_UNICODE -+ -+ int isAscii; -+ YCHAR *w; -+ -+ if(dev->param.auto_unicode){ -+ -+ isAscii = 1; -+ w = name; -+ -+ /* Figure out if the name will fit in ascii character set */ -+ while(isAscii && *w){ -+ if((*w) & 0xff00) -+ isAscii = 0; -+ w++; -+ } - -+ if(isAscii){ -+ /* It is an ASCII name, so do a unicode to ascii conversion */ -+ char *asciiOhName = (char *)ohName; -+ int n = YAFFS_MAX_NAME_LENGTH - 1; -+ while(n > 0 && *name){ -+ *asciiOhName= *name; -+ name++; -+ asciiOhName++; -+ n--; -+ } -+ } else{ -+ /* It is a unicode name, so save starting at the second YCHAR */ -+ *ohName = 0; -+ yaffs_strncpy(ohName+1,name, YAFFS_MAX_NAME_LENGTH -2); -+ } - } -+ else -+#endif -+ yaffs_strncpy(ohName,name, YAFFS_MAX_NAME_LENGTH - 1); -+ -+} -+ -+int yaffs_get_obj_name(yaffs_obj_t * obj, YCHAR * name, int buffer_size) -+{ -+ memset(name, 0, buffer_size * sizeof(YCHAR)); -+ -+ yaffs_check_obj_details_loaded(obj); -+ -+ if (obj->obj_id == YAFFS_OBJECTID_LOSTNFOUND) { -+ yaffs_strncpy(name, YAFFS_LOSTNFOUND_NAME, buffer_size - 1); -+ } - #ifdef CONFIG_YAFFS_SHORT_NAMES_IN_RAM -- else if (obj->shortName[0]) -- yaffs_strcpy(name, obj->shortName); -+ else if (obj->short_name[0]) { -+ yaffs_strcpy(name, obj->short_name); -+ } - #endif -- else { -+ else if(obj->hdr_chunk > 0) { - int result; -- __u8 *buffer = yaffs_GetTempBuffer(obj->myDev, __LINE__); -+ __u8 *buffer = yaffs_get_temp_buffer(obj->my_dev, __LINE__); - -- yaffs_ObjectHeader *oh = (yaffs_ObjectHeader *) buffer; -+ yaffs_obj_header *oh = (yaffs_obj_header *) buffer; - -- memset(buffer, 0, obj->myDev->nDataBytesPerChunk); -+ memset(buffer, 0, obj->my_dev->data_bytes_per_chunk); - -- if (obj->hdrChunk > 0) { -- result = yaffs_ReadChunkWithTagsFromNAND(obj->myDev, -- obj->hdrChunk, buffer, -+ if (obj->hdr_chunk > 0) { -+ result = yaffs_rd_chunk_tags_nand(obj->my_dev, -+ obj->hdr_chunk, buffer, - NULL); - } -- yaffs_strncpy(name, oh->name, buffSize - 1); -+ yaffs_load_name_from_oh(obj->my_dev,name,oh->name,buffer_size); - -- yaffs_ReleaseTempBuffer(obj->myDev, buffer, __LINE__); -+ yaffs_release_temp_buffer(obj->my_dev, buffer, __LINE__); - } - -- return yaffs_strlen(name); -+ yaffs_fix_null_name(obj,name,buffer_size); -+ -+ return yaffs_strnlen(name,YAFFS_MAX_NAME_LENGTH); - } - --int yaffs_GetObjectFileLength(yaffs_Object *obj) -+ -+int yaffs_get_obj_length(yaffs_obj_t *obj) - { - /* Dereference any hard linking */ -- obj = yaffs_GetEquivalentObject(obj); -+ obj = yaffs_get_equivalent_obj(obj); - -- if (obj->variantType == YAFFS_OBJECT_TYPE_FILE) -- return obj->variant.fileVariant.fileSize; -- if (obj->variantType == YAFFS_OBJECT_TYPE_SYMLINK) -- return yaffs_strlen(obj->variant.symLinkVariant.alias); -- else { -+ if (obj->variant_type == YAFFS_OBJECT_TYPE_FILE) -+ return obj->variant.file_variant.file_size; -+ if (obj->variant_type == YAFFS_OBJECT_TYPE_SYMLINK){ -+ if(!obj->variant.symlink_variant.alias) -+ return 0; -+ return yaffs_strnlen(obj->variant.symlink_variant.alias,YAFFS_MAX_ALIAS_LENGTH); -+ } else { - /* Only a directory should drop through to here */ -- return obj->myDev->nDataBytesPerChunk; -+ return obj->my_dev->data_bytes_per_chunk; - } - } - --int yaffs_GetObjectLinkCount(yaffs_Object *obj) -+int yaffs_get_obj_link_count(yaffs_obj_t *obj) - { - int count = 0; - struct ylist_head *i; -@@ -6915,24 +4804,24 @@ int yaffs_GetObjectLinkCount(yaffs_Objec - if (!obj->unlinked) - count++; /* the object itself */ - -- ylist_for_each(i, &obj->hardLinks) -+ ylist_for_each(i, &obj->hard_links) - count++; /* add the hard links; */ - - return count; - } - --int yaffs_GetObjectInode(yaffs_Object *obj) -+int yaffs_get_obj_inode(yaffs_obj_t *obj) - { -- obj = yaffs_GetEquivalentObject(obj); -+ obj = yaffs_get_equivalent_obj(obj); - -- return obj->objectId; -+ return obj->obj_id; - } - --unsigned yaffs_GetObjectType(yaffs_Object *obj) -+unsigned yaffs_get_obj_type(yaffs_obj_t *obj) - { -- obj = yaffs_GetEquivalentObject(obj); -+ obj = yaffs_get_equivalent_obj(obj); - -- switch (obj->variantType) { -+ switch (obj->variant_type) { - case YAFFS_OBJECT_TYPE_FILE: - return DT_REG; - break; -@@ -6960,18 +4849,18 @@ unsigned yaffs_GetObjectType(yaffs_Objec - } - } - --YCHAR *yaffs_GetSymlinkAlias(yaffs_Object *obj) -+YCHAR *yaffs_get_symlink_alias(yaffs_obj_t *obj) - { -- obj = yaffs_GetEquivalentObject(obj); -- if (obj->variantType == YAFFS_OBJECT_TYPE_SYMLINK) -- return yaffs_CloneString(obj->variant.symLinkVariant.alias); -+ obj = yaffs_get_equivalent_obj(obj); -+ if (obj->variant_type == YAFFS_OBJECT_TYPE_SYMLINK) -+ return yaffs_clone_str(obj->variant.symlink_variant.alias); - else -- return yaffs_CloneString(_Y("")); -+ return yaffs_clone_str(_Y("")); - } - - #ifndef CONFIG_YAFFS_WINCE - --int yaffs_SetAttributes(yaffs_Object *obj, struct iattr *attr) -+int yaffs_set_attribs(yaffs_obj_t *obj, struct iattr *attr) - { - unsigned int valid = attr->ia_valid; - -@@ -6990,14 +4879,14 @@ int yaffs_SetAttributes(yaffs_Object *ob - obj->yst_mtime = Y_TIME_CONVERT(attr->ia_mtime); - - if (valid & ATTR_SIZE) -- yaffs_ResizeFile(obj, attr->ia_size); -+ yaffs_resize_file(obj, attr->ia_size); - -- yaffs_UpdateObjectHeader(obj, NULL, 1, 0, 0); -+ yaffs_update_oh(obj, NULL, 1, 0, 0, NULL); - - return YAFFS_OK; - - } --int yaffs_GetAttributes(yaffs_Object *obj, struct iattr *attr) -+int yaffs_get_attribs(yaffs_obj_t *obj, struct iattr *attr) - { - unsigned int valid = 0; - -@@ -7015,7 +4904,7 @@ int yaffs_GetAttributes(yaffs_Object *ob - Y_TIME_CONVERT(attr->ia_mtime) = obj->yst_mtime; - valid |= ATTR_MTIME; - -- attr->ia_size = yaffs_GetFileSize(obj); -+ attr->ia_size = yaffs_get_file_size(obj); - valid |= ATTR_SIZE; - - attr->ia_valid = valid; -@@ -7025,20 +4914,137 @@ int yaffs_GetAttributes(yaffs_Object *ob - - #endif - -+ -+static int yaffs_do_xattrib_mod(yaffs_obj_t *obj, int set, const YCHAR *name, const void *value, int size, int flags) -+{ -+ yaffs_xattr_mod xmod; -+ -+ int result; -+ -+ xmod.set = set; -+ xmod.name = name; -+ xmod.data = value; -+ xmod.size = size; -+ xmod.flags = flags; -+ xmod.result = -ENOSPC; -+ -+ result = yaffs_update_oh(obj, NULL, 0, 0, 0, &xmod); -+ -+ if(result > 0) -+ return xmod.result; -+ else -+ return -ENOSPC; -+} -+ -+static int yaffs_apply_xattrib_mod(yaffs_obj_t *obj, char *buffer, yaffs_xattr_mod *xmod) -+{ -+ int retval = 0; -+ int x_offs = sizeof(yaffs_obj_header); -+ yaffs_dev_t *dev = obj->my_dev; -+ int x_size = dev->data_bytes_per_chunk - sizeof(yaffs_obj_header); -+ -+ char * x_buffer = buffer + x_offs; -+ -+ if(xmod->set) -+ retval = nval_set(x_buffer, x_size, xmod->name, xmod->data, xmod->size, xmod->flags); -+ else -+ retval = nval_del(x_buffer, x_size, xmod->name); -+ -+ obj->has_xattr = nval_hasvalues(x_buffer, x_size); -+ obj->xattr_known = 1; -+ -+ xmod->result = retval; -+ -+ return retval; -+} -+ -+static int yaffs_do_xattrib_fetch(yaffs_obj_t *obj, const YCHAR *name, void *value, int size) -+{ -+ char *buffer = NULL; -+ int result; -+ yaffs_ext_tags tags; -+ yaffs_dev_t *dev = obj->my_dev; -+ int x_offs = sizeof(yaffs_obj_header); -+ int x_size = dev->data_bytes_per_chunk - sizeof(yaffs_obj_header); -+ -+ char * x_buffer; -+ -+ int retval = 0; -+ -+ if(obj->hdr_chunk < 1) -+ return -ENODATA; -+ -+ /* If we know that the object has no xattribs then don't do all the -+ * reading and parsing. -+ */ -+ if(obj->xattr_known && !obj->has_xattr){ -+ if(name) -+ return -ENODATA; -+ else -+ return 0; -+ } -+ -+ buffer = (char *) yaffs_get_temp_buffer(dev, __LINE__); -+ if(!buffer) -+ return -ENOMEM; -+ -+ result = yaffs_rd_chunk_tags_nand(dev,obj->hdr_chunk, (__u8 *)buffer, &tags); -+ -+ if(result != YAFFS_OK) -+ retval = -ENOENT; -+ else{ -+ x_buffer = buffer + x_offs; -+ -+ if (!obj->xattr_known){ -+ obj->has_xattr = nval_hasvalues(x_buffer, x_size); -+ obj->xattr_known = 1; -+ } -+ -+ if(name) -+ retval = nval_get(x_buffer, x_size, name, value, size); -+ else -+ retval = nval_list(x_buffer, x_size, value,size); -+ } -+ yaffs_release_temp_buffer(dev,(__u8 *)buffer,__LINE__); -+ return retval; -+} -+ -+int yaffs_set_xattrib(yaffs_obj_t *obj, const YCHAR *name, const void * value, int size, int flags) -+{ -+ return yaffs_do_xattrib_mod(obj, 1, name, value, size, flags); -+} -+ -+int yaffs_remove_xattrib(yaffs_obj_t *obj, const YCHAR *name) -+{ -+ return yaffs_do_xattrib_mod(obj, 0, name, NULL, 0, 0); -+} -+ -+int yaffs_get_xattrib(yaffs_obj_t *obj, const YCHAR *name, void *value, int size) -+{ -+ return yaffs_do_xattrib_fetch(obj, name, value, size); -+} -+ -+int yaffs_list_xattrib(yaffs_obj_t *obj, char *buffer, int size) -+{ -+ return yaffs_do_xattrib_fetch(obj, NULL, buffer,size); -+} -+ -+ -+ - #if 0 --int yaffs_DumpObject(yaffs_Object *obj) -+int yaffs_dump_obj(yaffs_obj_t *obj) - { - YCHAR name[257]; - -- yaffs_GetObjectName(obj, name, 256); -+ yaffs_get_obj_name(obj, name, YAFFS_MAX_NAME_LENGTH + 1); - - T(YAFFS_TRACE_ALWAYS, - (TSTR - ("Object %d, inode %d \"%s\"\n dirty %d valid %d serial %d sum %d" - " chunk %d type %d size %d\n" -- TENDSTR), obj->objectId, yaffs_GetObjectInode(obj), name, -- obj->dirty, obj->valid, obj->serial, obj->sum, obj->hdrChunk, -- yaffs_GetObjectType(obj), yaffs_GetObjectFileLength(obj))); -+ TENDSTR), obj->obj_id, yaffs_get_obj_inode(obj), name, -+ obj->dirty, obj->valid, obj->serial, obj->sum, obj->hdr_chunk, -+ yaffs_get_obj_type(obj), yaffs_get_obj_length(obj))); - - return YAFFS_OK; - } -@@ -7046,72 +5052,74 @@ int yaffs_DumpObject(yaffs_Object *obj) - - /*---------------------------- Initialisation code -------------------------------------- */ - --static int yaffs_CheckDevFunctions(const yaffs_Device *dev) -+static int yaffs_cehck_dev_fns(const yaffs_dev_t *dev) - { - - /* Common functions, gotta have */ -- if (!dev->eraseBlockInNAND || !dev->initialiseNAND) -+ if (!dev->param.erase_fn || !dev->param.initialise_flash_fn) - return 0; - - #ifdef CONFIG_YAFFS_YAFFS2 - - /* Can use the "with tags" style interface for yaffs1 or yaffs2 */ -- if (dev->writeChunkWithTagsToNAND && -- dev->readChunkWithTagsFromNAND && -- !dev->writeChunkToNAND && -- !dev->readChunkFromNAND && -- dev->markNANDBlockBad && dev->queryNANDBlock) -+ if (dev->param.write_chunk_tags_fn && -+ dev->param.read_chunk_tags_fn && -+ !dev->param.write_chunk_fn && -+ !dev->param.read_chunk_fn && -+ dev->param.bad_block_fn && -+ dev->param.query_block_fn) - return 1; - #endif - - /* Can use the "spare" style interface for yaffs1 */ -- if (!dev->isYaffs2 && -- !dev->writeChunkWithTagsToNAND && -- !dev->readChunkWithTagsFromNAND && -- dev->writeChunkToNAND && -- dev->readChunkFromNAND && -- !dev->markNANDBlockBad && !dev->queryNANDBlock) -+ if (!dev->param.is_yaffs2 && -+ !dev->param.write_chunk_tags_fn && -+ !dev->param.read_chunk_tags_fn && -+ dev->param.write_chunk_fn && -+ dev->param.read_chunk_fn && -+ !dev->param.bad_block_fn && -+ !dev->param.query_block_fn) - return 1; - -- return 0; /* bad */ -+ return 0; /* bad */ - } - - --static int yaffs_CreateInitialDirectories(yaffs_Device *dev) -+static int yaffs_create_initial_dir(yaffs_dev_t *dev) - { - /* Initialise the unlinked, deleted, root and lost and found directories */ - -- dev->lostNFoundDir = dev->rootDir = NULL; -- dev->unlinkedDir = dev->deletedDir = NULL; -+ dev->lost_n_found = dev->root_dir = NULL; -+ dev->unlinked_dir = dev->del_dir = NULL; - -- dev->unlinkedDir = -- yaffs_CreateFakeDirectory(dev, YAFFS_OBJECTID_UNLINKED, S_IFDIR); -+ dev->unlinked_dir = -+ yaffs_create_fake_dir(dev, YAFFS_OBJECTID_UNLINKED, S_IFDIR); - -- dev->deletedDir = -- yaffs_CreateFakeDirectory(dev, YAFFS_OBJECTID_DELETED, S_IFDIR); -+ dev->del_dir = -+ yaffs_create_fake_dir(dev, YAFFS_OBJECTID_DELETED, S_IFDIR); - -- dev->rootDir = -- yaffs_CreateFakeDirectory(dev, YAFFS_OBJECTID_ROOT, -+ dev->root_dir = -+ yaffs_create_fake_dir(dev, YAFFS_OBJECTID_ROOT, - YAFFS_ROOT_MODE | S_IFDIR); -- dev->lostNFoundDir = -- yaffs_CreateFakeDirectory(dev, YAFFS_OBJECTID_LOSTNFOUND, -+ dev->lost_n_found = -+ yaffs_create_fake_dir(dev, YAFFS_OBJECTID_LOSTNFOUND, - YAFFS_LOSTNFOUND_MODE | S_IFDIR); - -- if (dev->lostNFoundDir && dev->rootDir && dev->unlinkedDir && dev->deletedDir) { -- yaffs_AddObjectToDirectory(dev->rootDir, dev->lostNFoundDir); -+ if (dev->lost_n_found && dev->root_dir && dev->unlinked_dir && dev->del_dir) { -+ yaffs_add_obj_to_dir(dev->root_dir, dev->lost_n_found); - return YAFFS_OK; - } - - return YAFFS_FAIL; - } - --int yaffs_GutsInitialise(yaffs_Device *dev) -+int yaffs_guts_initialise(yaffs_dev_t *dev) - { - int init_failed = 0; - unsigned x; - int bits; - -- T(YAFFS_TRACE_TRACING, (TSTR("yaffs: yaffs_GutsInitialise()" TENDSTR))); -+ T(YAFFS_TRACE_TRACING, (TSTR("yaffs: yaffs_guts_initialise()" TENDSTR))); - - /* Check stuff that must be set */ - -@@ -7120,52 +5128,52 @@ int yaffs_GutsInitialise(yaffs_Device *d - return YAFFS_FAIL; - } - -- dev->internalStartBlock = dev->startBlock; -- dev->internalEndBlock = dev->endBlock; -- dev->blockOffset = 0; -- dev->chunkOffset = 0; -- dev->nFreeChunks = 0; -- -- dev->gcBlock = -1; -- -- if (dev->startBlock == 0) { -- dev->internalStartBlock = dev->startBlock + 1; -- dev->internalEndBlock = dev->endBlock + 1; -- dev->blockOffset = 1; -- dev->chunkOffset = dev->nChunksPerBlock; -+ dev->internal_start_block = dev->param.start_block; -+ dev->internal_end_block = dev->param.end_block; -+ dev->block_offset = 0; -+ dev->chunk_offset = 0; -+ dev->n_free_chunks = 0; -+ -+ dev->gc_block = 0; -+ -+ if (dev->param.start_block == 0) { -+ dev->internal_start_block = dev->param.start_block + 1; -+ dev->internal_end_block = dev->param.end_block + 1; -+ dev->block_offset = 1; -+ dev->chunk_offset = dev->param.chunks_per_block; - } - - /* Check geometry parameters. */ - -- if ((!dev->inbandTags && dev->isYaffs2 && dev->totalBytesPerChunk < 1024) || -- (!dev->isYaffs2 && dev->totalBytesPerChunk < 512) || -- (dev->inbandTags && !dev->isYaffs2) || -- dev->nChunksPerBlock < 2 || -- dev->nReservedBlocks < 2 || -- dev->internalStartBlock <= 0 || -- dev->internalEndBlock <= 0 || -- dev->internalEndBlock <= (dev->internalStartBlock + dev->nReservedBlocks + 2)) { /* otherwise it is too small */ -+ if ((!dev->param.inband_tags && dev->param.is_yaffs2 && dev->param.total_bytes_per_chunk < 1024) || -+ (!dev->param.is_yaffs2 && dev->param.total_bytes_per_chunk < 512) || -+ (dev->param.inband_tags && !dev->param.is_yaffs2) || -+ dev->param.chunks_per_block < 2 || -+ dev->param.n_reserved_blocks < 2 || -+ dev->internal_start_block <= 0 || -+ dev->internal_end_block <= 0 || -+ dev->internal_end_block <= (dev->internal_start_block + dev->param.n_reserved_blocks + 2)) { /* otherwise it is too small */ - T(YAFFS_TRACE_ALWAYS, - (TSTR -- ("yaffs: NAND geometry problems: chunk size %d, type is yaffs%s, inbandTags %d " -- TENDSTR), dev->totalBytesPerChunk, dev->isYaffs2 ? "2" : "", dev->inbandTags)); -+ ("yaffs: NAND geometry problems: chunk size %d, type is yaffs%s, inband_tags %d " -+ TENDSTR), dev->param.total_bytes_per_chunk, dev->param.is_yaffs2 ? "2" : "", dev->param.inband_tags)); - return YAFFS_FAIL; - } - -- if (yaffs_InitialiseNAND(dev) != YAFFS_OK) { -+ if (yaffs_init_nand(dev) != YAFFS_OK) { - T(YAFFS_TRACE_ALWAYS, - (TSTR("yaffs: InitialiseNAND failed" TENDSTR))); - return YAFFS_FAIL; - } - - /* Sort out space for inband tags, if required */ -- if (dev->inbandTags) -- dev->nDataBytesPerChunk = dev->totalBytesPerChunk - sizeof(yaffs_PackedTags2TagsPart); -+ if (dev->param.inband_tags) -+ dev->data_bytes_per_chunk = dev->param.total_bytes_per_chunk - sizeof(yaffs_PackedTags2TagsPart); - else -- dev->nDataBytesPerChunk = dev->totalBytesPerChunk; -+ dev->data_bytes_per_chunk = dev->param.total_bytes_per_chunk; - - /* Got the right mix of functions? */ -- if (!yaffs_CheckDevFunctions(dev)) { -+ if (!yaffs_cehck_dev_fns(dev)) { - /* Function missing */ - T(YAFFS_TRACE_ALWAYS, - (TSTR -@@ -7175,13 +5183,13 @@ int yaffs_GutsInitialise(yaffs_Device *d - } - - /* This is really a compilation check. */ -- if (!yaffs_CheckStructures()) { -+ if (!yaffs_check_structures()) { - T(YAFFS_TRACE_ALWAYS, -- (TSTR("yaffs_CheckStructures failed\n" TENDSTR))); -+ (TSTR("yaffs_check_structures failed\n" TENDSTR))); - return YAFFS_FAIL; - } - -- if (dev->isMounted) { -+ if (dev->is_mounted) { - T(YAFFS_TRACE_ALWAYS, - (TSTR("yaffs: device already mounted\n" TENDSTR))); - return YAFFS_FAIL; -@@ -7189,59 +5197,62 @@ int yaffs_GutsInitialise(yaffs_Device *d - - /* Finished with most checks. One or two more checks happen later on too. */ - -- dev->isMounted = 1; -+ dev->is_mounted = 1; - - /* OK now calculate a few things for the device */ - - /* - * Calculate all the chunk size manipulation numbers: - */ -- x = dev->nDataBytesPerChunk; -- /* We always use dev->chunkShift and dev->chunkDiv */ -- dev->chunkShift = Shifts(x); -- x >>= dev->chunkShift; -- dev->chunkDiv = x; -- /* We only use chunk mask if chunkDiv is 1 */ -- dev->chunkMask = (1<<dev->chunkShift) - 1; -+ x = dev->data_bytes_per_chunk; -+ /* We always use dev->chunk_shift and dev->chunk_div */ -+ dev->chunk_shift = Shifts(x); -+ x >>= dev->chunk_shift; -+ dev->chunk_div = x; -+ /* We only use chunk mask if chunk_div is 1 */ -+ dev->chunk_mask = (1<<dev->chunk_shift) - 1; - - /* -- * Calculate chunkGroupBits. -- * We need to find the next power of 2 > than internalEndBlock -+ * Calculate chunk_grp_bits. -+ * We need to find the next power of 2 > than internal_end_block - */ - -- x = dev->nChunksPerBlock * (dev->internalEndBlock + 1); -+ x = dev->param.chunks_per_block * (dev->internal_end_block + 1); - - bits = ShiftsGE(x); - - /* Set up tnode width if wide tnodes are enabled. */ -- if (!dev->wideTnodesDisabled) { -+ if (!dev->param.wide_tnodes_disabled) { - /* bits must be even so that we end up with 32-bit words */ - if (bits & 1) - bits++; - if (bits < 16) -- dev->tnodeWidth = 16; -+ dev->tnode_width = 16; - else -- dev->tnodeWidth = bits; -+ dev->tnode_width = bits; - } else -- dev->tnodeWidth = 16; -+ dev->tnode_width = 16; - -- dev->tnodeMask = (1<<dev->tnodeWidth)-1; -+ dev->tnode_mask = (1<<dev->tnode_width)-1; - - /* Level0 Tnodes are 16 bits or wider (if wide tnodes are enabled), - * so if the bitwidth of the - * chunk range we're using is greater than 16 we need -- * to figure out chunk shift and chunkGroupSize -+ * to figure out chunk shift and chunk_grp_size - */ - -- if (bits <= dev->tnodeWidth) -- dev->chunkGroupBits = 0; -+ if (bits <= dev->tnode_width) -+ dev->chunk_grp_bits = 0; - else -- dev->chunkGroupBits = bits - dev->tnodeWidth; -+ dev->chunk_grp_bits = bits - dev->tnode_width; - -+ dev->tnode_size = (dev->tnode_width * YAFFS_NTNODES_LEVEL0)/8; -+ if(dev->tnode_size < sizeof(yaffs_tnode_t)) -+ dev->tnode_size = sizeof(yaffs_tnode_t); - -- dev->chunkGroupSize = 1 << dev->chunkGroupBits; -+ dev->chunk_grp_size = 1 << dev->chunk_grp_bits; - -- if (dev->nChunksPerBlock < dev->chunkGroupSize) { -+ if (dev->param.chunks_per_block < dev->chunk_grp_size) { - /* We have a problem because the soft delete won't work if - * the chunk group size > chunks per block. - * This can be remedied by using larger "virtual blocks". -@@ -7255,85 +5266,89 @@ int yaffs_GutsInitialise(yaffs_Device *d - /* OK, we've finished verifying the device, lets continue with initialisation */ - - /* More device initialisation */ -- dev->garbageCollections = 0; -- dev->passiveGarbageCollections = 0; -- dev->currentDirtyChecker = 0; -- dev->bufferedBlock = -1; -- dev->doingBufferedBlockRewrite = 0; -- dev->nDeletedFiles = 0; -- dev->nBackgroundDeletions = 0; -- dev->nUnlinkedFiles = 0; -- dev->eccFixed = 0; -- dev->eccUnfixed = 0; -- dev->tagsEccFixed = 0; -- dev->tagsEccUnfixed = 0; -- dev->nErasureFailures = 0; -- dev->nErasedBlocks = 0; -- dev->isDoingGC = 0; -- dev->hasPendingPrioritisedGCs = 1; /* Assume the worst for now, will get fixed on first GC */ -+ dev->all_gcs = 0; -+ dev->passive_gc_count = 0; -+ dev->oldest_dirty_gc_count = 0; -+ dev->bg_gcs = 0; -+ dev->gc_block_finder = 0; -+ dev->buffered_block = -1; -+ dev->doing_buffered_block_rewrite = 0; -+ dev->n_deleted_files = 0; -+ dev->n_bg_deletions = 0; -+ dev->n_unlinked_files = 0; -+ dev->n_ecc_fixed = 0; -+ dev->n_ecc_unfixed = 0; -+ dev->n_tags_ecc_fixed = 0; -+ dev->n_tags_ecc_unfixed = 0; -+ dev->n_erase_failures = 0; -+ dev->n_erased_blocks = 0; -+ dev->gc_disable= 0; -+ dev->has_pending_prioritised_gc = 1; /* Assume the worst for now, will get fixed on first GC */ -+ YINIT_LIST_HEAD(&dev->dirty_dirs); -+ dev->oldest_dirty_seq = 0; -+ dev->oldest_dirty_block = 0; - - /* Initialise temporary buffers and caches. */ -- if (!yaffs_InitialiseTempBuffers(dev)) -+ if (!yaffs_init_tmp_buffers(dev)) - init_failed = 1; - -- dev->srCache = NULL; -- dev->gcCleanupList = NULL; -+ dev->cache = NULL; -+ dev->gc_cleanup_list = NULL; - - - if (!init_failed && -- dev->nShortOpCaches > 0) { -+ dev->param.n_caches > 0) { - int i; - void *buf; -- int srCacheBytes = dev->nShortOpCaches * sizeof(yaffs_ChunkCache); -+ int cacheBytes = dev->param.n_caches * sizeof(yaffs_cache_t); - -- if (dev->nShortOpCaches > YAFFS_MAX_SHORT_OP_CACHES) -- dev->nShortOpCaches = YAFFS_MAX_SHORT_OP_CACHES; -+ if (dev->param.n_caches > YAFFS_MAX_SHORT_OP_CACHES) -+ dev->param.n_caches = YAFFS_MAX_SHORT_OP_CACHES; - -- dev->srCache = YMALLOC(srCacheBytes); -+ dev->cache = YMALLOC(cacheBytes); - -- buf = (__u8 *) dev->srCache; -+ buf = (__u8 *) dev->cache; - -- if (dev->srCache) -- memset(dev->srCache, 0, srCacheBytes); -+ if (dev->cache) -+ memset(dev->cache, 0, cacheBytes); - -- for (i = 0; i < dev->nShortOpCaches && buf; i++) { -- dev->srCache[i].object = NULL; -- dev->srCache[i].lastUse = 0; -- dev->srCache[i].dirty = 0; -- dev->srCache[i].data = buf = YMALLOC_DMA(dev->totalBytesPerChunk); -+ for (i = 0; i < dev->param.n_caches && buf; i++) { -+ dev->cache[i].object = NULL; -+ dev->cache[i].last_use = 0; -+ dev->cache[i].dirty = 0; -+ dev->cache[i].data = buf = YMALLOC_DMA(dev->param.total_bytes_per_chunk); - } - if (!buf) - init_failed = 1; - -- dev->srLastUse = 0; -+ dev->cache_last_use = 0; - } - -- dev->cacheHits = 0; -+ dev->cache_hits = 0; - - if (!init_failed) { -- dev->gcCleanupList = YMALLOC(dev->nChunksPerBlock * sizeof(__u32)); -- if (!dev->gcCleanupList) -+ dev->gc_cleanup_list = YMALLOC(dev->param.chunks_per_block * sizeof(__u32)); -+ if (!dev->gc_cleanup_list) - init_failed = 1; - } - -- if (dev->isYaffs2) -- dev->useHeaderFileSize = 1; -+ if (dev->param.is_yaffs2) -+ dev->param.use_header_file_size = 1; - -- if (!init_failed && !yaffs_InitialiseBlocks(dev)) -+ if (!init_failed && !yaffs_init_blocks(dev)) - init_failed = 1; - -- yaffs_InitialiseTnodes(dev); -- yaffs_InitialiseObjects(dev); -+ yaffs_init_tnodes_and_objs(dev); - -- if (!init_failed && !yaffs_CreateInitialDirectories(dev)) -+ if (!init_failed && !yaffs_create_initial_dir(dev)) - init_failed = 1; - - - if (!init_failed) { - /* Now scan the flash. */ -- if (dev->isYaffs2) { -- if (yaffs_CheckpointRestore(dev)) { -- yaffs_CheckObjectDetailsLoaded(dev->rootDir); -+ if (dev->param.is_yaffs2) { -+ if (yaffs2_checkpt_restore(dev)) { -+ yaffs_check_obj_details_loaded(dev->root_dir); - T(YAFFS_TRACE_ALWAYS, - (TSTR("yaffs: restored from checkpoint" TENDSTR))); - } else { -@@ -7341,128 +5356,129 @@ int yaffs_GutsInitialise(yaffs_Device *d - /* Clean up the mess caused by an aborted checkpoint load - * and scan backwards. - */ -- yaffs_DeinitialiseBlocks(dev); -- yaffs_DeinitialiseTnodes(dev); -- yaffs_DeinitialiseObjects(dev); -+ yaffs_deinit_blocks(dev); - -+ yaffs_deinit_tnodes_and_objs(dev); - -- dev->nErasedBlocks = 0; -- dev->nFreeChunks = 0; -- dev->allocationBlock = -1; -- dev->allocationPage = -1; -- dev->nDeletedFiles = 0; -- dev->nUnlinkedFiles = 0; -- dev->nBackgroundDeletions = 0; -- dev->oldestDirtySequence = 0; -+ dev->n_erased_blocks = 0; -+ dev->n_free_chunks = 0; -+ dev->alloc_block = -1; -+ dev->alloc_page = -1; -+ dev->n_deleted_files = 0; -+ dev->n_unlinked_files = 0; -+ dev->n_bg_deletions = 0; - -- if (!init_failed && !yaffs_InitialiseBlocks(dev)) -+ if (!init_failed && !yaffs_init_blocks(dev)) - init_failed = 1; - -- yaffs_InitialiseTnodes(dev); -- yaffs_InitialiseObjects(dev); -+ yaffs_init_tnodes_and_objs(dev); - -- if (!init_failed && !yaffs_CreateInitialDirectories(dev)) -+ if (!init_failed && !yaffs_create_initial_dir(dev)) - init_failed = 1; - -- if (!init_failed && !yaffs_ScanBackwards(dev)) -+ if (!init_failed && !yaffs2_scan_backwards(dev)) - init_failed = 1; - } -- } else if (!yaffs_Scan(dev)) -+ } else if (!yaffs1_scan(dev)) - init_failed = 1; - -- yaffs_StripDeletedObjects(dev); -+ yaffs_strip_deleted_objs(dev); -+ yaffs_fix_hanging_objs(dev); -+ if(dev->param.empty_lost_n_found) -+ yaffs_empty_l_n_f(dev); - } - - if (init_failed) { - /* Clean up the mess */ - T(YAFFS_TRACE_TRACING, -- (TSTR("yaffs: yaffs_GutsInitialise() aborted.\n" TENDSTR))); -+ (TSTR("yaffs: yaffs_guts_initialise() aborted.\n" TENDSTR))); - -- yaffs_Deinitialise(dev); -+ yaffs_deinitialise(dev); - return YAFFS_FAIL; - } - - /* Zero out stats */ -- dev->nPageReads = 0; -- dev->nPageWrites = 0; -- dev->nBlockErasures = 0; -- dev->nGCCopies = 0; -- dev->nRetriedWrites = 0; -- -- dev->nRetiredBlocks = 0; -- -- yaffs_VerifyFreeChunks(dev); -- yaffs_VerifyBlocks(dev); -- -+ dev->n_page_reads = 0; -+ dev->n_page_writes = 0; -+ dev->n_erasures = 0; -+ dev->n_gc_copies = 0; -+ dev->n_retired_writes = 0; -+ -+ dev->n_retired_blocks = 0; -+ -+ yaffs_verify_free_chunks(dev); -+ yaffs_verify_blocks(dev); -+ -+ /* Clean up any aborted checkpoint data */ -+ if(!dev->is_checkpointed && dev->blocks_in_checkpt > 0) -+ yaffs2_checkpt_invalidate(dev); - - T(YAFFS_TRACE_TRACING, -- (TSTR("yaffs: yaffs_GutsInitialise() done.\n" TENDSTR))); -+ (TSTR("yaffs: yaffs_guts_initialise() done.\n" TENDSTR))); - return YAFFS_OK; - - } - --void yaffs_Deinitialise(yaffs_Device *dev) -+void yaffs_deinitialise(yaffs_dev_t *dev) - { -- if (dev->isMounted) { -+ if (dev->is_mounted) { - int i; - -- yaffs_DeinitialiseBlocks(dev); -- yaffs_DeinitialiseTnodes(dev); -- yaffs_DeinitialiseObjects(dev); -- if (dev->nShortOpCaches > 0 && -- dev->srCache) { -+ yaffs_deinit_blocks(dev); -+ yaffs_deinit_tnodes_and_objs(dev); -+ if (dev->param.n_caches > 0 && -+ dev->cache) { - -- for (i = 0; i < dev->nShortOpCaches; i++) { -- if (dev->srCache[i].data) -- YFREE(dev->srCache[i].data); -- dev->srCache[i].data = NULL; -+ for (i = 0; i < dev->param.n_caches; i++) { -+ if (dev->cache[i].data) -+ YFREE(dev->cache[i].data); -+ dev->cache[i].data = NULL; - } - -- YFREE(dev->srCache); -- dev->srCache = NULL; -+ YFREE(dev->cache); -+ dev->cache = NULL; - } - -- YFREE(dev->gcCleanupList); -+ YFREE(dev->gc_cleanup_list); - - for (i = 0; i < YAFFS_N_TEMP_BUFFERS; i++) -- YFREE(dev->tempBuffer[i].buffer); -+ YFREE(dev->temp_buffer[i].buffer); - -- dev->isMounted = 0; -+ dev->is_mounted = 0; - -- if (dev->deinitialiseNAND) -- dev->deinitialiseNAND(dev); -+ if (dev->param.deinitialise_flash_fn) -+ dev->param.deinitialise_flash_fn(dev); - } - } - --static int yaffs_CountFreeChunks(yaffs_Device *dev) -+int yaffs_count_free_chunks(yaffs_dev_t *dev) - { -- int nFree; -+ int nFree=0; - int b; - -- yaffs_BlockInfo *blk; -- -- for (nFree = 0, b = dev->internalStartBlock; b <= dev->internalEndBlock; -- b++) { -- blk = yaffs_GetBlockInfo(dev, b); -+ yaffs_block_info_t *blk; - -- switch (blk->blockState) { -+ blk = dev->block_info; -+ for (b = dev->internal_start_block; b <= dev->internal_end_block; b++) { -+ switch (blk->block_state) { - case YAFFS_BLOCK_STATE_EMPTY: - case YAFFS_BLOCK_STATE_ALLOCATING: - case YAFFS_BLOCK_STATE_COLLECTING: - case YAFFS_BLOCK_STATE_FULL: - nFree += -- (dev->nChunksPerBlock - blk->pagesInUse + -- blk->softDeletions); -+ (dev->param.chunks_per_block - blk->pages_in_use + -+ blk->soft_del_pages); - break; - default: - break; - } -+ blk++; - } - - return nFree; - } - --int yaffs_GetNumberOfFreeChunks(yaffs_Device *dev) -+int yaffs_get_n_free_chunks(yaffs_dev_t *dev) - { - /* This is what we report to the outside world */ - -@@ -7472,30 +5488,28 @@ int yaffs_GetNumberOfFreeChunks(yaffs_De - int i; - - #if 1 -- nFree = dev->nFreeChunks; -+ nFree = dev->n_free_chunks; - #else -- nFree = yaffs_CountFreeChunks(dev); -+ nFree = yaffs_count_free_chunks(dev); - #endif - -- nFree += dev->nDeletedFiles; -+ nFree += dev->n_deleted_files; - - /* Now count the number of dirty chunks in the cache and subtract those */ - -- for (nDirtyCacheChunks = 0, i = 0; i < dev->nShortOpCaches; i++) { -- if (dev->srCache[i].dirty) -+ for (nDirtyCacheChunks = 0, i = 0; i < dev->param.n_caches; i++) { -+ if (dev->cache[i].dirty) - nDirtyCacheChunks++; - } - - nFree -= nDirtyCacheChunks; - -- nFree -= ((dev->nReservedBlocks + 1) * dev->nChunksPerBlock); -+ nFree -= ((dev->param.n_reserved_blocks + 1) * dev->param.chunks_per_block); - - /* Now we figure out how much to reserve for the checkpoint and report that... */ -- blocksForCheckpoint = yaffs_CalcCheckpointBlocksRequired(dev) - dev->blocksInCheckpoint; -- if (blocksForCheckpoint < 0) -- blocksForCheckpoint = 0; -+ blocksForCheckpoint = yaffs_calc_checkpt_blocks_required(dev); - -- nFree -= (blocksForCheckpoint * dev->nChunksPerBlock); -+ nFree -= (blocksForCheckpoint * dev->param.chunks_per_block); - - if (nFree < 0) - nFree = 0; -@@ -7504,49 +5518,27 @@ int yaffs_GetNumberOfFreeChunks(yaffs_De - - } - --static int yaffs_freeVerificationFailures; -- --static void yaffs_VerifyFreeChunks(yaffs_Device *dev) --{ -- int counted; -- int difference; -- -- if (yaffs_SkipVerification(dev)) -- return; -- -- counted = yaffs_CountFreeChunks(dev); -- -- difference = dev->nFreeChunks - counted; -- -- if (difference) { -- T(YAFFS_TRACE_ALWAYS, -- (TSTR("Freechunks verification failure %d %d %d" TENDSTR), -- dev->nFreeChunks, counted, difference)); -- yaffs_freeVerificationFailures++; -- } --} - - /*---------------------------------------- YAFFS test code ----------------------*/ - --#define yaffs_CheckStruct(structure, syze, name) \ -+#define yaffs_check_struct(structure, syze, name) \ - do { \ - if (sizeof(structure) != syze) { \ - T(YAFFS_TRACE_ALWAYS, (TSTR("%s should be %d but is %d\n" TENDSTR),\ -- name, syze, sizeof(structure))); \ -+ name, syze, (int) sizeof(structure))); \ - return YAFFS_FAIL; \ - } \ - } while (0) - --static int yaffs_CheckStructures(void) -+static int yaffs_check_structures(void) - { --/* yaffs_CheckStruct(yaffs_Tags,8,"yaffs_Tags"); */ --/* yaffs_CheckStruct(yaffs_TagsUnion,8,"yaffs_TagsUnion"); */ --/* yaffs_CheckStruct(yaffs_Spare,16,"yaffs_Spare"); */ --#ifndef CONFIG_YAFFS_TNODE_LIST_DEBUG -- yaffs_CheckStruct(yaffs_Tnode, 2 * YAFFS_NTNODES_LEVEL0, "yaffs_Tnode"); --#endif -+/* yaffs_check_struct(yaffs_tags_t,8,"yaffs_tags_t"); */ -+/* yaffs_check_struct(yaffs_tags_union_t,8,"yaffs_tags_union_t"); */ -+/* yaffs_check_struct(yaffs_spare,16,"yaffs_spare"); */ -+/* yaffs_check_struct(yaffs_tnode_t, 2 * YAFFS_NTNODES_LEVEL0, "yaffs_tnode_t"); */ -+ - #ifndef CONFIG_YAFFS_WINCE -- yaffs_CheckStruct(yaffs_ObjectHeader, 512, "yaffs_ObjectHeader"); -+ yaffs_check_struct(yaffs_obj_header, 512, "yaffs_obj_header"); - #endif - return YAFFS_OK; - } ---- a/fs/yaffs2/yaffs_guts.h -+++ b/fs/yaffs2/yaffs_guts.h -@@ -1,7 +1,7 @@ - /* - * YAFFS: Yet another Flash File System . A NAND-flash specific file system. - * -- * Copyright (C) 2002-2007 Aleph One Ltd. -+ * Copyright (C) 2002-2010 Aleph One Ltd. - * for Toby Churchill Ltd and Brightstar Engineering - * - * Created by Charles Manning <charles@aleph1.co.uk> -@@ -16,8 +16,9 @@ - #ifndef __YAFFS_GUTS_H__ - #define __YAFFS_GUTS_H__ - --#include "devextras.h" - #include "yportenv.h" -+#include "devextras.h" -+#include "yaffs_list.h" - - #define YAFFS_OK 1 - #define YAFFS_FAIL 0 -@@ -52,7 +53,6 @@ - - #define YAFFS_MAX_CHUNK_ID 0x000FFFFF - --#define YAFFS_UNUSED_OBJECT_ID 0x0003FFFF - - #define YAFFS_ALLOCATION_NOBJECTS 100 - #define YAFFS_ALLOCATION_NTNODES 100 -@@ -62,8 +62,9 @@ - - - #define YAFFS_OBJECT_SPACE 0x40000 -+#define YAFFS_MAX_OBJECT_ID (YAFFS_OBJECT_SPACE -1) - --#define YAFFS_CHECKPOINT_VERSION 3 -+#define YAFFS_CHECKPOINT_VERSION 4 - - #ifdef CONFIG_YAFFS_UNICODE - #define YAFFS_MAX_NAME_LENGTH 127 -@@ -81,12 +82,11 @@ - #define YAFFS_OBJECTID_UNLINKED 3 - #define YAFFS_OBJECTID_DELETED 4 - --/* Sseudo object ids for checkpointing */ -+/* Pseudo object ids for checkpointing */ - #define YAFFS_OBJECTID_SB_HEADER 0x10 - #define YAFFS_OBJECTID_CHECKPOINT_DATA 0x20 - #define YAFFS_SEQUENCE_CHECKPOINT_DATA 0x21 - --/* */ - - #define YAFFS_MAX_SHORT_OP_CACHES 20 - -@@ -113,18 +113,14 @@ - - /* ChunkCache is used for short read/write operations.*/ - typedef struct { -- struct yaffs_ObjectStruct *object; -- int chunkId; -- int lastUse; -+ struct yaffs_obj_s *object; -+ int chunk_id; -+ int last_use; - int dirty; -- int nBytes; /* Only valid if the cache is dirty */ -+ int n_bytes; /* Only valid if the cache is dirty */ - int locked; /* Can't push out or flush while locked. */ --#ifdef CONFIG_YAFFS_YAFFS2 - __u8 *data; --#else -- __u8 data[YAFFS_BYTES_PER_CHUNK]; --#endif --} yaffs_ChunkCache; -+} yaffs_cache_t; - - - -@@ -135,18 +131,18 @@ typedef struct { - - #ifndef CONFIG_YAFFS_NO_YAFFS1 - typedef struct { -- unsigned chunkId:20; -- unsigned serialNumber:2; -- unsigned byteCountLSB:10; -- unsigned objectId:18; -+ unsigned chunk_id:20; -+ unsigned serial_number:2; -+ unsigned n_bytes_lsb:10; -+ unsigned obj_id:18; - unsigned ecc:12; -- unsigned byteCountMSB:2; --} yaffs_Tags; -+ unsigned n_bytes_msb:2; -+} yaffs_tags_t; - - typedef union { -- yaffs_Tags asTags; -- __u8 asBytes[8]; --} yaffs_TagsUnion; -+ yaffs_tags_t as_tags; -+ __u8 as_bytes[8]; -+} yaffs_tags_union_t; - - #endif - -@@ -157,7 +153,7 @@ typedef enum { - YAFFS_ECC_RESULT_NO_ERROR, - YAFFS_ECC_RESULT_FIXED, - YAFFS_ECC_RESULT_UNFIXED --} yaffs_ECCResult; -+} yaffs_ecc_result; - - typedef enum { - YAFFS_OBJECT_TYPE_UNKNOWN, -@@ -166,64 +162,64 @@ typedef enum { - YAFFS_OBJECT_TYPE_DIRECTORY, - YAFFS_OBJECT_TYPE_HARDLINK, - YAFFS_OBJECT_TYPE_SPECIAL --} yaffs_ObjectType; -+} yaffs_obj_type; - - #define YAFFS_OBJECT_TYPE_MAX YAFFS_OBJECT_TYPE_SPECIAL - - typedef struct { - -- unsigned validMarker0; -- unsigned chunkUsed; /* Status of the chunk: used or unused */ -- unsigned objectId; /* If 0 then this is not part of an object (unused) */ -- unsigned chunkId; /* If 0 then this is a header, else a data chunk */ -- unsigned byteCount; /* Only valid for data chunks */ -+ unsigned validity1; -+ unsigned chunk_used; /* Status of the chunk: used or unused */ -+ unsigned obj_id; /* If 0 then this is not part of an object (unused) */ -+ unsigned chunk_id; /* If 0 then this is a header, else a data chunk */ -+ unsigned n_bytes; /* Only valid for data chunks */ - - /* The following stuff only has meaning when we read */ -- yaffs_ECCResult eccResult; -- unsigned blockBad; -+ yaffs_ecc_result ecc_result; -+ unsigned block_bad; - - /* YAFFS 1 stuff */ -- unsigned chunkDeleted; /* The chunk is marked deleted */ -- unsigned serialNumber; /* Yaffs1 2-bit serial number */ -+ unsigned is_deleted; /* The chunk is marked deleted */ -+ unsigned serial_number; /* Yaffs1 2-bit serial number */ - - /* YAFFS2 stuff */ -- unsigned sequenceNumber; /* The sequence number of this block */ -+ unsigned seq_number; /* The sequence number of this block */ - - /* Extra info if this is an object header (YAFFS2 only) */ - -- unsigned extraHeaderInfoAvailable; /* There is extra info available if this is not zero */ -- unsigned extraParentObjectId; /* The parent object */ -- unsigned extraIsShrinkHeader; /* Is it a shrink header? */ -- unsigned extraShadows; /* Does this shadow another object? */ -+ unsigned extra_available; /* There is extra info available if this is not zero */ -+ unsigned extra_parent_id; /* The parent object */ -+ unsigned extra_is_shrink; /* Is it a shrink header? */ -+ unsigned extra_shadows; /* Does this shadow another object? */ - -- yaffs_ObjectType extraObjectType; /* What object type? */ -+ yaffs_obj_type extra_obj_type; /* What object type? */ - -- unsigned extraFileLength; /* Length if it is a file */ -- unsigned extraEquivalentObjectId; /* Equivalent object Id if it is a hard link */ -+ unsigned extra_length; /* Length if it is a file */ -+ unsigned extra_equiv_id; /* Equivalent object Id if it is a hard link */ - -- unsigned validMarker1; -+ unsigned validty1; - --} yaffs_ExtendedTags; -+} yaffs_ext_tags; - - /* Spare structure for YAFFS1 */ - typedef struct { -- __u8 tagByte0; -- __u8 tagByte1; -- __u8 tagByte2; -- __u8 tagByte3; -- __u8 pageStatus; /* set to 0 to delete the chunk */ -- __u8 blockStatus; -- __u8 tagByte4; -- __u8 tagByte5; -+ __u8 tb0; -+ __u8 tb1; -+ __u8 tb2; -+ __u8 tb3; -+ __u8 page_status; /* set to 0 to delete the chunk */ -+ __u8 block_status; -+ __u8 tb4; -+ __u8 tb5; - __u8 ecc1[3]; -- __u8 tagByte6; -- __u8 tagByte7; -+ __u8 tb6; -+ __u8 tb7; - __u8 ecc2[3]; --} yaffs_Spare; -+} yaffs_spare; - - /*Special structure for passing through to mtd */ --struct yaffs_NANDSpare { -- yaffs_Spare spare; -+struct yaffs_nand_spare { -+ yaffs_spare spare; - int eccres1; - int eccres2; - }; -@@ -234,6 +230,8 @@ typedef enum { - YAFFS_BLOCK_STATE_UNKNOWN = 0, - - YAFFS_BLOCK_STATE_SCANNING, -+ /* Being scanned */ -+ - YAFFS_BLOCK_STATE_NEEDS_SCANNING, - /* The block might have something on it (ie it is allocating or full, perhaps empty) - * but it needs to be scanned to determine its true state. -@@ -249,67 +247,69 @@ typedef enum { - /* This block is partially allocated. - * At least one page holds valid data. - * This is the one currently being used for page -- * allocation. Should never be more than one of these -+ * allocation. Should never be more than one of these. -+ * If a block is only partially allocated at mount it is treated as full. - */ - - YAFFS_BLOCK_STATE_FULL, - /* All the pages in this block have been allocated. -+ * If a block was only partially allocated when mounted we treat -+ * it as fully allocated. - */ - - YAFFS_BLOCK_STATE_DIRTY, -- /* All pages have been allocated and deleted. -+ /* The block was full and now all chunks have been deleted. - * Erase me, reuse me. - */ - - YAFFS_BLOCK_STATE_CHECKPOINT, -- /* This block is assigned to holding checkpoint data. -- */ -+ /* This block is assigned to holding checkpoint data. */ - - YAFFS_BLOCK_STATE_COLLECTING, - /* This block is being garbage collected */ - - YAFFS_BLOCK_STATE_DEAD - /* This block has failed and is not in use */ --} yaffs_BlockState; -+} yaffs_block_state_t; - - #define YAFFS_NUMBER_OF_BLOCK_STATES (YAFFS_BLOCK_STATE_DEAD + 1) - - - typedef struct { - -- int softDeletions:10; /* number of soft deleted pages */ -- int pagesInUse:10; /* number of pages in use */ -- unsigned blockState:4; /* One of the above block states. NB use unsigned because enum is sometimes an int */ -- __u32 needsRetiring:1; /* Data has failed on this block, need to get valid data off */ -+ int soft_del_pages:10; /* number of soft deleted pages */ -+ int pages_in_use:10; /* number of pages in use */ -+ unsigned block_state:4; /* One of the above block states. NB use unsigned because enum is sometimes an int */ -+ __u32 needs_retiring:1; /* Data has failed on this block, need to get valid data off */ - /* and retire the block. */ -- __u32 skipErasedCheck:1; /* If this is set we can skip the erased check on this block */ -- __u32 gcPrioritise:1; /* An ECC check or blank check has failed on this block. -+ __u32 skip_erased_check:1; /* If this is set we can skip the erased check on this block */ -+ __u32 gc_prioritise:1; /* An ECC check or blank check has failed on this block. - It should be prioritised for GC */ -- __u32 chunkErrorStrikes:3; /* How many times we've had ecc etc failures on this block and tried to reuse it */ -+ __u32 chunk_error_strikes:3; /* How many times we've had ecc etc failures on this block and tried to reuse it */ - - #ifdef CONFIG_YAFFS_YAFFS2 -- __u32 hasShrinkHeader:1; /* This block has at least one shrink object header */ -- __u32 sequenceNumber; /* block sequence number for yaffs2 */ -+ __u32 has_shrink_hdr:1; /* This block has at least one shrink object header */ -+ __u32 seq_number; /* block sequence number for yaffs2 */ - #endif - --} yaffs_BlockInfo; -+} yaffs_block_info_t; - - /* -------------------------- Object structure -------------------------------*/ - /* This is the object structure as stored on NAND */ - - typedef struct { -- yaffs_ObjectType type; -+ yaffs_obj_type type; - - /* Apply to everything */ -- int parentObjectId; -- __u16 sum__NoLongerUsed; /* checksum of name. No longer used */ -+ int parent_obj_id; -+ __u16 sum_no_longer_used; /* checksum of name. No longer used */ - YCHAR name[YAFFS_MAX_NAME_LENGTH + 1]; - - /* The following apply to directories, files, symlinks - not hard links */ - __u32 yst_mode; /* protection */ - - #ifdef CONFIG_YAFFS_WINCE -- __u32 notForWinCE[5]; -+ __u32 not_for_wince[5]; - #else - __u32 yst_uid; - __u32 yst_gid; -@@ -319,10 +319,10 @@ typedef struct { - #endif - - /* File size applies to files only */ -- int fileSize; -+ int file_size; - - /* Equivalent object id applies to hard links only. */ -- int equivalentObjectId; -+ int equiv_id; - - /* Alias is for symlinks only. */ - YCHAR alias[YAFFS_MAX_ALIAS_LENGTH + 1]; -@@ -334,40 +334,29 @@ typedef struct { - __u32 win_atime[2]; - __u32 win_mtime[2]; - #else -- __u32 roomToGrow[6]; -+ __u32 room_to_grow[6]; - - #endif -- __u32 inbandShadowsObject; -- __u32 inbandIsShrink; -+ __u32 inband_shadowed_obj_id; -+ __u32 inband_is_shrink; - -- __u32 reservedSpace[2]; -- int shadowsObject; /* This object header shadows the specified object if > 0 */ -+ __u32 reserved[2]; -+ int shadows_obj; /* This object header shadows the specified object if > 0 */ - -- /* isShrink applies to object headers written when we shrink the file (ie resize) */ -- __u32 isShrink; -+ /* is_shrink applies to object headers written when we shrink the file (ie resize) */ -+ __u32 is_shrink; - --} yaffs_ObjectHeader; -+} yaffs_obj_header; - - /*--------------------------- Tnode -------------------------- */ - --union yaffs_Tnode_union { --#ifdef CONFIG_YAFFS_TNODE_LIST_DEBUG -- union yaffs_Tnode_union *internal[YAFFS_NTNODES_INTERNAL + 1]; --#else -- union yaffs_Tnode_union *internal[YAFFS_NTNODES_INTERNAL]; --#endif --/* __u16 level0[YAFFS_NTNODES_LEVEL0]; */ -+union yaffs_tnode_union { -+ union yaffs_tnode_union *internal[YAFFS_NTNODES_INTERNAL]; - - }; - --typedef union yaffs_Tnode_union yaffs_Tnode; -+typedef union yaffs_tnode_union yaffs_tnode_t; - --struct yaffs_TnodeList_struct { -- struct yaffs_TnodeList_struct *next; -- yaffs_Tnode *tnodes; --}; -- --typedef struct yaffs_TnodeList_struct yaffs_TnodeList; - - /*------------------------ Object -----------------------------*/ - /* An object can be one of: -@@ -378,82 +367,85 @@ typedef struct yaffs_TnodeList_struct ya - */ - - typedef struct { -- __u32 fileSize; -- __u32 scannedFileSize; -- __u32 shrinkSize; -- int topLevel; -- yaffs_Tnode *top; --} yaffs_FileStructure; -+ __u32 file_size; -+ __u32 scanned_size; -+ __u32 shrink_size; -+ int top_level; -+ yaffs_tnode_t *top; -+} yaffs_file_s; - - typedef struct { - struct ylist_head children; /* list of child links */ --} yaffs_DirectoryStructure; -+ struct ylist_head dirty; /* Entry for list of dirty directories */ -+} yaffs_dir_s; - - typedef struct { - YCHAR *alias; --} yaffs_SymLinkStructure; -+} yaffs_symlink_t; - - typedef struct { -- struct yaffs_ObjectStruct *equivalentObject; -- __u32 equivalentObjectId; --} yaffs_HardLinkStructure; -+ struct yaffs_obj_s *equiv_obj; -+ __u32 equiv_id; -+} yaffs_hard_link_s; - - typedef union { -- yaffs_FileStructure fileVariant; -- yaffs_DirectoryStructure directoryVariant; -- yaffs_SymLinkStructure symLinkVariant; -- yaffs_HardLinkStructure hardLinkVariant; --} yaffs_ObjectVariant; -+ yaffs_file_s file_variant; -+ yaffs_dir_s dir_variant; -+ yaffs_symlink_t symlink_variant; -+ yaffs_hard_link_s hardlink_variant; -+} yaffs_obj_variant; -+ -+ - --struct yaffs_ObjectStruct { -+struct yaffs_obj_s { - __u8 deleted:1; /* This should only apply to unlinked files. */ -- __u8 softDeleted:1; /* it has also been soft deleted */ -+ __u8 soft_del:1; /* it has also been soft deleted */ - __u8 unlinked:1; /* An unlinked file. The file should be in the unlinked directory.*/ - __u8 fake:1; /* A fake object has no presence on NAND. */ -- __u8 renameAllowed:1; /* Some objects are not allowed to be renamed. */ -- __u8 unlinkAllowed:1; -+ __u8 rename_allowed:1; /* Some objects are not allowed to be renamed. */ -+ __u8 unlink_allowed:1; - __u8 dirty:1; /* the object needs to be written to flash */ - __u8 valid:1; /* When the file system is being loaded up, this - * object might be created before the data - * is available (ie. file data records appear before the header). - */ -- __u8 lazyLoaded:1; /* This object has been lazy loaded and is missing some detail */ -+ __u8 lazy_loaded:1; /* This object has been lazy loaded and is missing some detail */ - -- __u8 deferedFree:1; /* For Linux kernel. Object is removed from NAND, but is -+ __u8 defered_free:1; /* For Linux kernel. Object is removed from NAND, but is - * still in the inode cache. Free of object is defered. - * until the inode is released. - */ -- __u8 beingCreated:1; /* This object is still being created so skip some checks. */ -+ __u8 being_created:1; /* This object is still being created so skip some checks. */ -+ __u8 is_shadowed:1; /* This object is shadowed on the way to being renamed. */ -+ -+ __u8 xattr_known:1; /* We know if this has object has xattribs or not. */ -+ __u8 has_xattr:1; /* This object has xattribs. Valid if xattr_known. */ - - __u8 serial; /* serial number of chunk in NAND. Cached here */ - __u16 sum; /* sum of the name to speed searching */ - -- struct yaffs_DeviceStruct *myDev; /* The device I'm on */ -+ struct yaffs_dev_s *my_dev; /* The device I'm on */ - -- struct ylist_head hashLink; /* list of objects in this hash bucket */ -+ struct ylist_head hash_link; /* list of objects in this hash bucket */ - -- struct ylist_head hardLinks; /* all the equivalent hard linked objects */ -+ struct ylist_head hard_links; /* all the equivalent hard linked objects */ - - /* directory structure stuff */ - /* also used for linking up the free list */ -- struct yaffs_ObjectStruct *parent; -+ struct yaffs_obj_s *parent; - struct ylist_head siblings; - - /* Where's my object header in NAND? */ -- int hdrChunk; -+ int hdr_chunk; - -- int nDataChunks; /* Number of data chunks attached to the file. */ -+ int n_data_chunks; /* Number of data chunks attached to the file. */ - -- __u32 objectId; /* the object id value */ -+ __u32 obj_id; /* the object id value */ - - __u32 yst_mode; - - #ifdef CONFIG_YAFFS_SHORT_NAMES_IN_RAM -- YCHAR shortName[YAFFS_SHORT_NAME_LENGTH + 1]; --#endif -- --#ifndef __KERNEL__ -- __u32 inUse; -+ YCHAR short_name[YAFFS_SHORT_NAME_LENGTH + 1]; - #endif - - #ifdef CONFIG_YAFFS_WINCE -@@ -470,53 +462,43 @@ struct yaffs_ObjectStruct { - - __u32 yst_rdev; - --#ifdef __KERNEL__ -- struct inode *myInode; -+ void *my_inode; - --#endif -+ yaffs_obj_type variant_type; - -- yaffs_ObjectType variantType; -+ yaffs_obj_variant variant; - -- yaffs_ObjectVariant variant; -- --}; -- --typedef struct yaffs_ObjectStruct yaffs_Object; -- --struct yaffs_ObjectList_struct { -- yaffs_Object *objects; -- struct yaffs_ObjectList_struct *next; - }; - --typedef struct yaffs_ObjectList_struct yaffs_ObjectList; -+typedef struct yaffs_obj_s yaffs_obj_t; - - typedef struct { - struct ylist_head list; - int count; --} yaffs_ObjectBucket; -+} yaffs_obj_bucket; - - --/* yaffs_CheckpointObject holds the definition of an object as dumped -+/* yaffs_checkpt_obj_t holds the definition of an object as dumped - * by checkpointing. - */ - - typedef struct { -- int structType; -- __u32 objectId; -- __u32 parentId; -- int hdrChunk; -- yaffs_ObjectType variantType:3; -+ int struct_type; -+ __u32 obj_id; -+ __u32 parent_id; -+ int hdr_chunk; -+ yaffs_obj_type variant_type:3; - __u8 deleted:1; -- __u8 softDeleted:1; -+ __u8 soft_del:1; - __u8 unlinked:1; - __u8 fake:1; -- __u8 renameAllowed:1; -- __u8 unlinkAllowed:1; -+ __u8 rename_allowed:1; -+ __u8 unlink_allowed:1; - __u8 serial; - -- int nDataChunks; -- __u32 fileSizeOrEquivalentObjectId; --} yaffs_CheckpointObject; -+ int n_data_chunks; -+ __u32 size_or_equiv_obj; -+} yaffs_checkpt_obj_t; - - /*--------------------- Temporary buffers ---------------- - * -@@ -526,379 +508,462 @@ typedef struct { - typedef struct { - __u8 *buffer; - int line; /* track from whence this buffer was allocated */ -- int maxLine; --} yaffs_TempBuffer; -+ int max_line; -+} yaffs_buffer_t; - - /*----------------- Device ---------------------------------*/ - --struct yaffs_DeviceStruct { -- struct ylist_head devList; -- const char *name; -- -- /* Entry parameters set up way early. Yaffs sets up the rest.*/ -- int nDataBytesPerChunk; /* Should be a power of 2 >= 512 */ -- int nChunksPerBlock; /* does not need to be a power of 2 */ -- int spareBytesPerChunk; /* spare area size */ -- int startBlock; /* Start block we're allowed to use */ -- int endBlock; /* End block we're allowed to use */ -- int nReservedBlocks; /* We want this tuneable so that we can reduce */ -- /* reserved blocks on NOR and RAM. */ -- - -- /* Stuff used by the shared space checkpointing mechanism */ -- /* If this value is zero, then this mechanism is disabled */ -+struct yaffs_param_s { -+ const YCHAR *name; - --/* int nCheckpointReservedBlocks; */ /* Blocks to reserve for checkpoint data */ -+ /* -+ * Entry parameters set up way early. Yaffs sets up the rest. -+ * The structure should be zeroed out before use so that unused -+ * and defualt values are zero. -+ */ -+ -+ int inband_tags; /* Use unband tags */ -+ __u32 total_bytes_per_chunk; /* Should be >= 512, does not need to be a power of 2 */ -+ int chunks_per_block; /* does not need to be a power of 2 */ -+ int spare_bytes_per_chunk; /* spare area size */ -+ int start_block; /* Start block we're allowed to use */ -+ int end_block; /* End block we're allowed to use */ -+ int n_reserved_blocks; /* We want this tuneable so that we can reduce */ -+ /* reserved blocks on NOR and RAM. */ - - -- int nShortOpCaches; /* If <= 0, then short op caching is disabled, else -- * the number of short op caches (don't use too many) -+ int n_caches; /* If <= 0, then short op caching is disabled, else -+ * the number of short op caches (don't use too many). -+ * 10 to 20 is a good bet. - */ -+ int use_nand_ecc; /* Flag to decide whether or not to use NANDECC on data (yaffs1) */ -+ int no_tags_ecc; /* Flag to decide whether or not to do ECC on packed tags (yaffs2) */ - -- int useHeaderFileSize; /* Flag to determine if we should use file sizes from the header */ -+ int is_yaffs2; /* Use yaffs2 mode on this device */ - -- int useNANDECC; /* Flag to decide whether or not to use NANDECC */ -+ int empty_lost_n_found; /* Auto-empty lost+found directory on mount */ - -- void *genericDevice; /* Pointer to device context -- * On an mtd this holds the mtd pointer. -- */ -- void *superBlock; -+ int refresh_period; /* How often we should check to do a block refresh */ -+ -+ /* Checkpoint control. Can be set before or after initialisation */ -+ __u8 skip_checkpt_rd; -+ __u8 skip_checkpt_wr; -+ -+ int enable_xattr; /* Enable xattribs */ - - /* NAND access functions (Must be set before calling YAFFS)*/ - -- int (*writeChunkToNAND) (struct yaffs_DeviceStruct *dev, -- int chunkInNAND, const __u8 *data, -- const yaffs_Spare *spare); -- int (*readChunkFromNAND) (struct yaffs_DeviceStruct *dev, -- int chunkInNAND, __u8 *data, -- yaffs_Spare *spare); -- int (*eraseBlockInNAND) (struct yaffs_DeviceStruct *dev, -- int blockInNAND); -- int (*initialiseNAND) (struct yaffs_DeviceStruct *dev); -- int (*deinitialiseNAND) (struct yaffs_DeviceStruct *dev); -+ int (*write_chunk_fn) (struct yaffs_dev_s *dev, -+ int nand_chunk, const __u8 *data, -+ const yaffs_spare *spare); -+ int (*read_chunk_fn) (struct yaffs_dev_s *dev, -+ int nand_chunk, __u8 *data, -+ yaffs_spare *spare); -+ int (*erase_fn) (struct yaffs_dev_s *dev, -+ int flash_block); -+ int (*initialise_flash_fn) (struct yaffs_dev_s *dev); -+ int (*deinitialise_flash_fn) (struct yaffs_dev_s *dev); - - #ifdef CONFIG_YAFFS_YAFFS2 -- int (*writeChunkWithTagsToNAND) (struct yaffs_DeviceStruct *dev, -- int chunkInNAND, const __u8 *data, -- const yaffs_ExtendedTags *tags); -- int (*readChunkWithTagsFromNAND) (struct yaffs_DeviceStruct *dev, -- int chunkInNAND, __u8 *data, -- yaffs_ExtendedTags *tags); -- int (*markNANDBlockBad) (struct yaffs_DeviceStruct *dev, int blockNo); -- int (*queryNANDBlock) (struct yaffs_DeviceStruct *dev, int blockNo, -- yaffs_BlockState *state, __u32 *sequenceNumber); --#endif -- -- int isYaffs2; -- -- /* The removeObjectCallback function must be supplied by OS flavours that -- * need it. The Linux kernel does not use this, but yaffs direct does use -- * it to implement the faster readdir -+ int (*write_chunk_tags_fn) (struct yaffs_dev_s *dev, -+ int nand_chunk, const __u8 *data, -+ const yaffs_ext_tags *tags); -+ int (*read_chunk_tags_fn) (struct yaffs_dev_s *dev, -+ int nand_chunk, __u8 *data, -+ yaffs_ext_tags *tags); -+ int (*bad_block_fn) (struct yaffs_dev_s *dev, int block_no); -+ int (*query_block_fn) (struct yaffs_dev_s *dev, int block_no, -+ yaffs_block_state_t *state, __u32 *seq_number); -+#endif -+ -+ /* The remove_obj_fn function must be supplied by OS flavours that -+ * need it. -+ * yaffs direct uses it to implement the faster readdir. -+ * Linux uses it to protect the directory during unlocking. - */ -- void (*removeObjectCallback)(struct yaffs_ObjectStruct *obj); -+ void (*remove_obj_fn)(struct yaffs_obj_s *obj); - -- /* Callback to mark the superblock dirsty */ -- void (*markSuperBlockDirty)(void *superblock); -+ /* Callback to mark the superblock dirty */ -+ void (*sb_dirty_fn)(struct yaffs_dev_s *dev); -+ -+ /* Callback to control garbage collection. */ -+ unsigned (*gc_control)(struct yaffs_dev_s *dev); -+ -+ /* Debug control flags. Don't use unless you know what you're doing */ -+ int use_header_file_size; /* Flag to determine if we should use file sizes from the header */ -+ int disable_lazy_load; /* Disable lazy loading on this device */ -+ int wide_tnodes_disabled; /* Set to disable wide tnodes */ -+ int disable_soft_del; /* yaffs 1 only: Set to disable the use of softdeletion. */ -+ -+ int defered_dir_update; /* Set to defer directory updates */ - -- int wideTnodesDisabled; /* Set to disable wide tnodes */ -+#ifdef CONFIG_YAFFS_AUTO_UNICODE -+ int auto_unicode; -+#endif -+ int always_check_erased; /* Force chunk erased check always on */ -+}; - -- YCHAR *pathDividers; /* String of legal path dividers */ -+typedef struct yaffs_param_s yaffs_param_t; - -+struct yaffs_dev_s { -+ struct yaffs_param_s param; - -- /* End of stuff that must be set before initialisation. */ -+ /* Context storage. Holds extra OS specific data for this device */ - -- /* Checkpoint control. Can be set before or after initialisation */ -- __u8 skipCheckpointRead; -- __u8 skipCheckpointWrite; -+ void *os_context; -+ void *driver_context; -+ -+ struct ylist_head dev_list; - - /* Runtime parameters. Set up by YAFFS. */ -+ int data_bytes_per_chunk; - -- __u16 chunkGroupBits; /* 0 for devices <= 32MB. else log2(nchunks) - 16 */ -- __u16 chunkGroupSize; /* == 2^^chunkGroupBits */ -+ /* Non-wide tnode stuff */ -+ __u16 chunk_grp_bits; /* Number of bits that need to be resolved if -+ * the tnodes are not wide enough. -+ */ -+ __u16 chunk_grp_size; /* == 2^^chunk_grp_bits */ - - /* Stuff to support wide tnodes */ -- __u32 tnodeWidth; -- __u32 tnodeMask; -+ __u32 tnode_width; -+ __u32 tnode_mask; -+ __u32 tnode_size; - - /* Stuff for figuring out file offset to chunk conversions */ -- __u32 chunkShift; /* Shift value */ -- __u32 chunkDiv; /* Divisor after shifting: 1 for power-of-2 sizes */ -- __u32 chunkMask; /* Mask to use for power-of-2 case */ -- -- /* Stuff to handle inband tags */ -- int inbandTags; -- __u32 totalBytesPerChunk; -- --#ifdef __KERNEL__ -- -- struct semaphore sem; /* Semaphore for waiting on erasure.*/ -- struct semaphore grossLock; /* Gross locking semaphore */ -- __u8 *spareBuffer; /* For mtdif2 use. Don't know the size of the buffer -- * at compile time so we have to allocate it. -- */ -- void (*putSuperFunc) (struct super_block *sb); --#endif -+ __u32 chunk_shift; /* Shift value */ -+ __u32 chunk_div; /* Divisor after shifting: 1 for power-of-2 sizes */ -+ __u32 chunk_mask; /* Mask to use for power-of-2 case */ - -- int isMounted; - -- int isCheckpointed; -+ -+ int is_mounted; -+ int read_only; -+ int is_checkpointed; - - - /* Stuff to support block offsetting to support start block zero */ -- int internalStartBlock; -- int internalEndBlock; -- int blockOffset; -- int chunkOffset; -+ int internal_start_block; -+ int internal_end_block; -+ int block_offset; -+ int chunk_offset; - - - /* Runtime checkpointing stuff */ -- int checkpointPageSequence; /* running sequence number of checkpoint pages */ -- int checkpointByteCount; -- int checkpointByteOffset; -- __u8 *checkpointBuffer; -- int checkpointOpenForWrite; -- int blocksInCheckpoint; -- int checkpointCurrentChunk; -- int checkpointCurrentBlock; -- int checkpointNextBlock; -- int *checkpointBlockList; -- int checkpointMaxBlocks; -- __u32 checkpointSum; -- __u32 checkpointXor; -+ int checkpt_page_seq; /* running sequence number of checkpoint pages */ -+ int checkpt_byte_count; -+ int checkpt_byte_offs; -+ __u8 *checkpt_buffer; -+ int checkpt_open_write; -+ int blocks_in_checkpt; -+ int checkpt_cur_chunk; -+ int checkpt_cur_block; -+ int checkpt_next_block; -+ int *checkpt_block_list; -+ int checkpt_max_blocks; -+ __u32 checkpt_sum; -+ __u32 checkpt_xor; - -- int nCheckpointBlocksRequired; /* Number of blocks needed to store current checkpoint set */ -+ int checkpoint_blocks_required; /* Number of blocks needed to store current checkpoint set */ - - /* Block Info */ -- yaffs_BlockInfo *blockInfo; -- __u8 *chunkBits; /* bitmap of chunks in use */ -- unsigned blockInfoAlt:1; /* was allocated using alternative strategy */ -- unsigned chunkBitsAlt:1; /* was allocated using alternative strategy */ -- int chunkBitmapStride; /* Number of bytes of chunkBits per block. -- * Must be consistent with nChunksPerBlock. -+ yaffs_block_info_t *block_info; -+ __u8 *chunk_bits; /* bitmap of chunks in use */ -+ unsigned block_info_alt:1; /* was allocated using alternative strategy */ -+ unsigned chunk_bits_alt:1; /* was allocated using alternative strategy */ -+ int chunk_bit_stride; /* Number of bytes of chunk_bits per block. -+ * Must be consistent with chunks_per_block. - */ - -- int nErasedBlocks; -- int allocationBlock; /* Current block being allocated off */ -- __u32 allocationPage; -- int allocationBlockFinder; /* Used to search for next allocation block */ -- -- /* Runtime state */ -- int nTnodesCreated; -- yaffs_Tnode *freeTnodes; -- int nFreeTnodes; -- yaffs_TnodeList *allocatedTnodeList; -- -- int isDoingGC; -- int gcBlock; -- int gcChunk; -- -- int nObjectsCreated; -- yaffs_Object *freeObjects; -- int nFreeObjects; -- -- int nHardLinks; -- -- yaffs_ObjectList *allocatedObjectList; -- -- yaffs_ObjectBucket objectBucket[YAFFS_NOBJECT_BUCKETS]; -- -- int nFreeChunks; -- -- int currentDirtyChecker; /* Used to find current dirtiest block */ -- -- __u32 *gcCleanupList; /* objects to delete at the end of a GC. */ -- int nonAggressiveSkip; /* GC state/mode */ -- -- /* Statistcs */ -- int nPageWrites; -- int nPageReads; -- int nBlockErasures; -- int nErasureFailures; -- int nGCCopies; -- int garbageCollections; -- int passiveGarbageCollections; -- int nRetriedWrites; -- int nRetiredBlocks; -- int eccFixed; -- int eccUnfixed; -- int tagsEccFixed; -- int tagsEccUnfixed; -- int nDeletions; -- int nUnmarkedDeletions; -- -- int hasPendingPrioritisedGCs; /* We think this device might have pending prioritised gcs */ -+ int n_erased_blocks; -+ int alloc_block; /* Current block being allocated off */ -+ __u32 alloc_page; -+ int alloc_block_finder; /* Used to search for next allocation block */ -+ -+ /* Object and Tnode memory management */ -+ void *allocator; -+ int n_obj; -+ int n_tnodes; -+ -+ int n_hardlinks; -+ -+ yaffs_obj_bucket obj_bucket[YAFFS_NOBJECT_BUCKETS]; -+ __u32 bucket_finder; -+ -+ int n_free_chunks; -+ -+ /* Garbage collection control */ -+ __u32 *gc_cleanup_list; /* objects to delete at the end of a GC. */ -+ __u32 n_clean_ups; -+ -+ unsigned has_pending_prioritised_gc; /* We think this device might have pending prioritised gcs */ -+ unsigned gc_disable; -+ unsigned gc_block_finder; -+ unsigned gc_dirtiest; -+ unsigned gc_pages_in_use; -+ unsigned gc_not_done; -+ unsigned gc_block; -+ unsigned gc_chunk; -+ unsigned gc_skip; - - /* Special directories */ -- yaffs_Object *rootDir; -- yaffs_Object *lostNFoundDir; -+ yaffs_obj_t *root_dir; -+ yaffs_obj_t *lost_n_found; - - /* Buffer areas for storing data to recover from write failures TODO -- * __u8 bufferedData[YAFFS_CHUNKS_PER_BLOCK][YAFFS_BYTES_PER_CHUNK]; -- * yaffs_Spare bufferedSpare[YAFFS_CHUNKS_PER_BLOCK]; -+ * __u8 buffered_data[YAFFS_CHUNKS_PER_BLOCK][YAFFS_BYTES_PER_CHUNK]; -+ * yaffs_spare buffered_spare[YAFFS_CHUNKS_PER_BLOCK]; - */ - -- int bufferedBlock; /* Which block is buffered here? */ -- int doingBufferedBlockRewrite; -- -- yaffs_ChunkCache *srCache; -- int srLastUse; -+ int buffered_block; /* Which block is buffered here? */ -+ int doing_buffered_block_rewrite; - -- int cacheHits; -+ yaffs_cache_t *cache; -+ int cache_last_use; - - /* Stuff for background deletion and unlinked files.*/ -- yaffs_Object *unlinkedDir; /* Directory where unlinked and deleted files live. */ -- yaffs_Object *deletedDir; /* Directory where deleted objects are sent to disappear. */ -- yaffs_Object *unlinkedDeletion; /* Current file being background deleted.*/ -- int nDeletedFiles; /* Count of files awaiting deletion;*/ -- int nUnlinkedFiles; /* Count of unlinked files. */ -- int nBackgroundDeletions; /* Count of background deletions. */ -- -+ yaffs_obj_t *unlinked_dir; /* Directory where unlinked and deleted files live. */ -+ yaffs_obj_t *del_dir; /* Directory where deleted objects are sent to disappear. */ -+ yaffs_obj_t *unlinked_deletion; /* Current file being background deleted.*/ -+ int n_deleted_files; /* Count of files awaiting deletion;*/ -+ int n_unlinked_files; /* Count of unlinked files. */ -+ int n_bg_deletions; /* Count of background deletions. */ - - /* Temporary buffer management */ -- yaffs_TempBuffer tempBuffer[YAFFS_N_TEMP_BUFFERS]; -- int maxTemp; -- int tempInUse; -- int unmanagedTempAllocations; -- int unmanagedTempDeallocations; -+ yaffs_buffer_t temp_buffer[YAFFS_N_TEMP_BUFFERS]; -+ int max_temp; -+ int temp_in_use; -+ int unmanaged_buffer_allocs; -+ int unmanaged_buffer_deallocs; - - /* yaffs2 runtime stuff */ -- unsigned sequenceNumber; /* Sequence number of currently allocating block */ -- unsigned oldestDirtySequence; -+ unsigned seq_number; /* Sequence number of currently allocating block */ -+ unsigned oldest_dirty_seq; -+ unsigned oldest_dirty_block; -+ -+ /* Block refreshing */ -+ int refresh_skip; /* A skip down counter. Refresh happens when this gets to zero. */ -+ -+ /* Dirty directory handling */ -+ struct ylist_head dirty_dirs; /* List of dirty directories */ -+ -+ -+ /* Statistcs */ -+ __u32 n_page_writes; -+ __u32 n_page_reads; -+ __u32 n_erasures; -+ __u32 n_erase_failures; -+ __u32 n_gc_copies; -+ __u32 all_gcs; -+ __u32 passive_gc_count; -+ __u32 oldest_dirty_gc_count; -+ __u32 n_gc_blocks; -+ __u32 bg_gcs; -+ __u32 n_retired_writes; -+ __u32 n_retired_blocks; -+ __u32 n_ecc_fixed; -+ __u32 n_ecc_unfixed; -+ __u32 n_tags_ecc_fixed; -+ __u32 n_tags_ecc_unfixed; -+ __u32 n_deletions; -+ __u32 n_unmarked_deletions; -+ __u32 refresh_count; -+ __u32 cache_hits; - - }; - --typedef struct yaffs_DeviceStruct yaffs_Device; -+typedef struct yaffs_dev_s yaffs_dev_t; - - /* The static layout of block usage etc is stored in the super block header */ - typedef struct { - int StructType; - int version; -- int checkpointStartBlock; -- int checkpointEndBlock; -- int startBlock; -- int endBlock; -+ int checkpt_start_block; -+ int checkpt_end_block; -+ int start_block; -+ int end_block; - int rfu[100]; --} yaffs_SuperBlockHeader; -+} yaffs_sb_header; - - /* The CheckpointDevice structure holds the device information that changes at runtime and - * must be preserved over unmount/mount cycles. - */ - typedef struct { -- int structType; -- int nErasedBlocks; -- int allocationBlock; /* Current block being allocated off */ -- __u32 allocationPage; -- int nFreeChunks; -- -- int nDeletedFiles; /* Count of files awaiting deletion;*/ -- int nUnlinkedFiles; /* Count of unlinked files. */ -- int nBackgroundDeletions; /* Count of background deletions. */ -+ int struct_type; -+ int n_erased_blocks; -+ int alloc_block; /* Current block being allocated off */ -+ __u32 alloc_page; -+ int n_free_chunks; -+ -+ int n_deleted_files; /* Count of files awaiting deletion;*/ -+ int n_unlinked_files; /* Count of unlinked files. */ -+ int n_bg_deletions; /* Count of background deletions. */ - - /* yaffs2 runtime stuff */ -- unsigned sequenceNumber; /* Sequence number of currently allocating block */ -- unsigned oldestDirtySequence; -+ unsigned seq_number; /* Sequence number of currently allocating block */ - --} yaffs_CheckpointDevice; -+} yaffs_checkpt_dev_t; - - - typedef struct { -- int structType; -+ int struct_type; - __u32 magic; - __u32 version; - __u32 head; --} yaffs_CheckpointValidity; -+} yaffs_checkpt_validty_t; -+ -+ -+struct yaffs_shadow_fixer_s { -+ int obj_id; -+ int shadowed_id; -+ struct yaffs_shadow_fixer_s *next; -+}; -+ -+/* Structure for doing xattr modifications */ -+typedef struct { -+ int set; /* If 0 then this is a deletion */ -+ const YCHAR *name; -+ const void *data; -+ int size; -+ int flags; -+ int result; -+}yaffs_xattr_mod; - - - /*----------------------- YAFFS Functions -----------------------*/ - --int yaffs_GutsInitialise(yaffs_Device *dev); --void yaffs_Deinitialise(yaffs_Device *dev); -+int yaffs_guts_initialise(yaffs_dev_t *dev); -+void yaffs_deinitialise(yaffs_dev_t *dev); - --int yaffs_GetNumberOfFreeChunks(yaffs_Device *dev); -+int yaffs_get_n_free_chunks(yaffs_dev_t *dev); - --int yaffs_RenameObject(yaffs_Object *oldDir, const YCHAR *oldName, -- yaffs_Object *newDir, const YCHAR *newName); -+int yaffs_rename_obj(yaffs_obj_t *old_dir, const YCHAR *old_name, -+ yaffs_obj_t *new_dir, const YCHAR *new_name); - --int yaffs_Unlink(yaffs_Object *dir, const YCHAR *name); --int yaffs_DeleteObject(yaffs_Object *obj); -+int yaffs_unlinker(yaffs_obj_t *dir, const YCHAR *name); -+int yaffs_del_obj(yaffs_obj_t *obj); - --int yaffs_GetObjectName(yaffs_Object *obj, YCHAR *name, int buffSize); --int yaffs_GetObjectFileLength(yaffs_Object *obj); --int yaffs_GetObjectInode(yaffs_Object *obj); --unsigned yaffs_GetObjectType(yaffs_Object *obj); --int yaffs_GetObjectLinkCount(yaffs_Object *obj); -+int yaffs_get_obj_name(yaffs_obj_t *obj, YCHAR *name, int buffer_size); -+int yaffs_get_obj_length(yaffs_obj_t *obj); -+int yaffs_get_obj_inode(yaffs_obj_t *obj); -+unsigned yaffs_get_obj_type(yaffs_obj_t *obj); -+int yaffs_get_obj_link_count(yaffs_obj_t *obj); - --int yaffs_SetAttributes(yaffs_Object *obj, struct iattr *attr); --int yaffs_GetAttributes(yaffs_Object *obj, struct iattr *attr); -+int yaffs_set_attribs(yaffs_obj_t *obj, struct iattr *attr); -+int yaffs_get_attribs(yaffs_obj_t *obj, struct iattr *attr); - - /* File operations */ --int yaffs_ReadDataFromFile(yaffs_Object *obj, __u8 *buffer, loff_t offset, -- int nBytes); --int yaffs_WriteDataToFile(yaffs_Object *obj, const __u8 *buffer, loff_t offset, -- int nBytes, int writeThrough); --int yaffs_ResizeFile(yaffs_Object *obj, loff_t newSize); -+int yaffs_file_rd(yaffs_obj_t *obj, __u8 *buffer, loff_t offset, -+ int n_bytes); -+int yaffs_wr_file(yaffs_obj_t *obj, const __u8 *buffer, loff_t offset, -+ int n_bytes, int write_trhrough); -+int yaffs_resize_file(yaffs_obj_t *obj, loff_t new_size); - --yaffs_Object *yaffs_MknodFile(yaffs_Object *parent, const YCHAR *name, -+yaffs_obj_t *yaffs_create_file(yaffs_obj_t *parent, const YCHAR *name, - __u32 mode, __u32 uid, __u32 gid); --int yaffs_FlushFile(yaffs_Object *obj, int updateTime); -+ -+int yaffs_flush_file(yaffs_obj_t *obj, int update_time, int data_sync); - - /* Flushing and checkpointing */ --void yaffs_FlushEntireDeviceCache(yaffs_Device *dev); -+void yaffs_flush_whole_cache(yaffs_dev_t *dev); - --int yaffs_CheckpointSave(yaffs_Device *dev); --int yaffs_CheckpointRestore(yaffs_Device *dev); -+int yaffs_checkpoint_save(yaffs_dev_t *dev); -+int yaffs_checkpoint_restore(yaffs_dev_t *dev); - - /* Directory operations */ --yaffs_Object *yaffs_MknodDirectory(yaffs_Object *parent, const YCHAR *name, -+yaffs_obj_t *yaffs_create_dir(yaffs_obj_t *parent, const YCHAR *name, - __u32 mode, __u32 uid, __u32 gid); --yaffs_Object *yaffs_FindObjectByName(yaffs_Object *theDir, const YCHAR *name); --int yaffs_ApplyToDirectoryChildren(yaffs_Object *theDir, -- int (*fn) (yaffs_Object *)); -+yaffs_obj_t *yaffs_find_by_name(yaffs_obj_t *the_dir, const YCHAR *name); -+int yaffs_ApplyToDirectoryChildren(yaffs_obj_t *the_dir, -+ int (*fn) (yaffs_obj_t *)); - --yaffs_Object *yaffs_FindObjectByNumber(yaffs_Device *dev, __u32 number); -+yaffs_obj_t *yaffs_find_by_number(yaffs_dev_t *dev, __u32 number); - - /* Link operations */ --yaffs_Object *yaffs_Link(yaffs_Object *parent, const YCHAR *name, -- yaffs_Object *equivalentObject); -+yaffs_obj_t *yaffs_link_obj(yaffs_obj_t *parent, const YCHAR *name, -+ yaffs_obj_t *equiv_obj); - --yaffs_Object *yaffs_GetEquivalentObject(yaffs_Object *obj); -+yaffs_obj_t *yaffs_get_equivalent_obj(yaffs_obj_t *obj); - - /* Symlink operations */ --yaffs_Object *yaffs_MknodSymLink(yaffs_Object *parent, const YCHAR *name, -+yaffs_obj_t *yaffs_create_symlink(yaffs_obj_t *parent, const YCHAR *name, - __u32 mode, __u32 uid, __u32 gid, - const YCHAR *alias); --YCHAR *yaffs_GetSymlinkAlias(yaffs_Object *obj); -+YCHAR *yaffs_get_symlink_alias(yaffs_obj_t *obj); - - /* Special inodes (fifos, sockets and devices) */ --yaffs_Object *yaffs_MknodSpecial(yaffs_Object *parent, const YCHAR *name, -+yaffs_obj_t *yaffs_create_special(yaffs_obj_t *parent, const YCHAR *name, - __u32 mode, __u32 uid, __u32 gid, __u32 rdev); - -+ -+int yaffs_set_xattrib(yaffs_obj_t *obj, const YCHAR *name, const void * value, int size, int flags); -+int yaffs_get_xattrib(yaffs_obj_t *obj, const YCHAR *name, void *value, int size); -+int yaffs_list_xattrib(yaffs_obj_t *obj, char *buffer, int size); -+int yaffs_remove_xattrib(yaffs_obj_t *obj, const YCHAR *name); -+ - /* Special directories */ --yaffs_Object *yaffs_Root(yaffs_Device *dev); --yaffs_Object *yaffs_LostNFound(yaffs_Device *dev); -+yaffs_obj_t *yaffs_root(yaffs_dev_t *dev); -+yaffs_obj_t *yaffs_lost_n_found(yaffs_dev_t *dev); - - #ifdef CONFIG_YAFFS_WINCE - /* CONFIG_YAFFS_WINCE special stuff */ --void yfsd_WinFileTimeNow(__u32 target[2]); -+void yfsd_win_file_time_now(__u32 target[2]); - #endif - --#ifdef __KERNEL__ -+void yaffs_handle_defered_free(yaffs_obj_t *obj); - --void yaffs_HandleDeferedFree(yaffs_Object *obj); --#endif -+void yaffs_update_dirty_dirs(yaffs_dev_t *dev); -+ -+int yaffs_bg_gc(yaffs_dev_t *dev, unsigned urgency); - - /* Debug dump */ --int yaffs_DumpObject(yaffs_Object *obj); -+int yaffs_dump_obj(yaffs_obj_t *obj); - --void yaffs_GutsTest(yaffs_Device *dev); -+void yaffs_guts_test(yaffs_dev_t *dev); - --/* A few useful functions */ --void yaffs_InitialiseTags(yaffs_ExtendedTags *tags); --void yaffs_DeleteChunk(yaffs_Device *dev, int chunkId, int markNAND, int lyn); --int yaffs_CheckFF(__u8 *buffer, int nBytes); --void yaffs_HandleChunkError(yaffs_Device *dev, yaffs_BlockInfo *bi); -+/* A few useful functions to be used within the core files*/ -+void yaffs_chunk_del(yaffs_dev_t *dev, int chunk_id, int mark_flash, int lyn); -+int yaffs_check_ff(__u8 *buffer, int n_bytes); -+void yaffs_handle_chunk_error(yaffs_dev_t *dev, yaffs_block_info_t *bi); -+ -+__u8 *yaffs_get_temp_buffer(yaffs_dev_t *dev, int line_no); -+void yaffs_release_temp_buffer(yaffs_dev_t *dev, __u8 *buffer, int line_no); -+ -+yaffs_obj_t *yaffs_find_or_create_by_number(yaffs_dev_t *dev, -+ int number, -+ yaffs_obj_type type); -+int yaffs_put_chunk_in_file(yaffs_obj_t *in, int inode_chunk, -+ int nand_chunk, int in_scan); -+void yaffs_set_obj_name(yaffs_obj_t *obj, const YCHAR *name); -+void yaffs_set_obj_name_from_oh(yaffs_obj_t *obj, const yaffs_obj_header *oh); -+void yaffs_add_obj_to_dir(yaffs_obj_t *directory, -+ yaffs_obj_t *obj); -+YCHAR *yaffs_clone_str(const YCHAR *str); -+void yaffs_link_fixup(yaffs_dev_t *dev, yaffs_obj_t *hard_list); -+void yaffs_block_became_dirty(yaffs_dev_t *dev, int block_no); -+int yaffs_update_oh(yaffs_obj_t *in, const YCHAR *name, -+ int force, int is_shrink, int shadows, -+ yaffs_xattr_mod *xop); -+void yaffs_handle_shadowed_obj(yaffs_dev_t *dev, int obj_id, -+ int backward_scanning); -+int yaffs_check_alloc_available(yaffs_dev_t *dev, int n_chunks); -+yaffs_tnode_t *yaffs_get_tnode(yaffs_dev_t *dev); -+yaffs_tnode_t *yaffs_add_find_tnode_0(yaffs_dev_t *dev, -+ yaffs_file_s *file_struct, -+ __u32 chunk_id, -+ yaffs_tnode_t *passed_tn); -+ -+int yaffs_do_file_wr(yaffs_obj_t *in, const __u8 *buffer, loff_t offset, -+ int n_bytes, int write_trhrough); -+void yaffs_resize_file_down( yaffs_obj_t *obj, loff_t new_size); -+void yaffs_skip_rest_of_block(yaffs_dev_t *dev); -+ -+int yaffs_count_free_chunks(yaffs_dev_t *dev); -+ -+yaffs_tnode_t *yaffs_find_tnode_0(yaffs_dev_t *dev, -+ yaffs_file_s *file_struct, -+ __u32 chunk_id); - --__u8 *yaffs_GetTempBuffer(yaffs_Device *dev, int lineNo); --void yaffs_ReleaseTempBuffer(yaffs_Device *dev, __u8 *buffer, int lineNo); -+__u32 yaffs_get_group_base(yaffs_dev_t *dev, yaffs_tnode_t *tn, unsigned pos); - - #endif ---- a/fs/yaffs2/yaffsinterface.h -+++ b/fs/yaffs2/yaffsinterface.h -@@ -1,7 +1,7 @@ - /* - * YAFFS: Yet another Flash File System . A NAND-flash specific file system. - * -- * Copyright (C) 2002-2007 Aleph One Ltd. -+ * Copyright (C) 2002-2010 Aleph One Ltd. - * for Toby Churchill Ltd and Brightstar Engineering - * - * Created by Charles Manning <charles@aleph1.co.uk> -@@ -16,6 +16,6 @@ - #ifndef __YAFFSINTERFACE_H__ - #define __YAFFSINTERFACE_H__ - --int yaffs_Initialise(unsigned nBlocks); -+int yaffs_initialise(unsigned nBlocks); - - #endif ---- /dev/null -+++ b/fs/yaffs2/yaffs_linux_allocator.c -@@ -0,0 +1,200 @@ -+/* -+ * YAFFS: Yet another Flash File System . A NAND-flash specific file system. -+ * -+ * Copyright (C) 2002-2010 Aleph One Ltd. -+ * for Toby Churchill Ltd and Brightstar Engineering -+ * -+ * Created by Charles Manning <charles@aleph1.co.uk> -+ * -+ * This program is free software; you can redistribute it and/or modify -+ * it under the terms of the GNU Lesser General Public License version 2.1 as -+ * published by the Free Software Foundation. -+ * -+ * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL. -+ * -+ * Note: Tis code is currently unused. Being checked in in case it becomes useful. -+ */ -+ -+ -+#include "yaffs_allocator.h" -+#include "yaffs_guts.h" -+#include "yaffs_trace.h" -+#include "yportenv.h" -+#include "yaffs_linux.h" -+/* -+ * Start out with the same allocator as yaffs direct. -+ * Todo: Change to Linux slab allocator. -+ */ -+ -+ -+ -+#define NAMELEN 20 -+struct yaffs_AllocatorStruct { -+ char tnode_name[NAMELEN+1]; -+ char object_name[NAMELEN+1]; -+ struct kmem_cache *tnode_cache; -+ struct kmem_cache *object_cache; -+}; -+ -+typedef struct yaffs_AllocatorStruct yaffs_Allocator; -+ -+int mount_id; -+ -+void yaffs_deinit_raw_tnodes_and_objs(yaffs_dev_t *dev) -+{ -+ yaffs_Allocator *allocator = (yaffs_Allocator *)dev->allocator; -+ -+ T(YAFFS_TRACE_ALLOCATE,(TSTR("Deinitialising yaffs allocator\n"))); -+ -+ if(allocator){ -+ if(allocator->tnode_cache){ -+ kmem_cache_destroy(allocator->tnode_cache); -+ allocator->tnode_cache = NULL; -+ } else { -+ T(YAFFS_TRACE_ALWAYS, -+ (TSTR("NULL tnode cache\n"))); -+ YBUG(); -+ } -+ -+ if(allocator->object_cache){ -+ kmem_cache_destroy(allocator->object_cache); -+ allocator->object_cache = NULL; -+ } else { -+ T(YAFFS_TRACE_ALWAYS, -+ (TSTR("NULL object cache\n"))); -+ YBUG(); -+ } -+ -+ YFREE(allocator); -+ -+ } else { -+ T(YAFFS_TRACE_ALWAYS, -+ (TSTR("Deinitialising NULL allocator\n"))); -+ YBUG(); -+ } -+ dev->allocator = NULL; -+} -+ -+ -+static void fake_ctor0(void *data){data = data;} -+static void fake_ctor1(void *data){data = data;} -+static void fake_ctor2(void *data){data = data;} -+static void fake_ctor3(void *data){data = data;} -+static void fake_ctor4(void *data){data = data;} -+static void fake_ctor5(void *data){data = data;} -+static void fake_ctor6(void *data){data = data;} -+static void fake_ctor7(void *data){data = data;} -+static void fake_ctor8(void *data){data = data;} -+static void fake_ctor9(void *data){data = data;} -+ -+static void (*fake_ctor_list[10]) (void *) = { -+ fake_ctor0, -+ fake_ctor1, -+ fake_ctor2, -+ fake_ctor3, -+ fake_ctor4, -+ fake_ctor5, -+ fake_ctor6, -+ fake_ctor7, -+ fake_ctor8, -+ fake_ctor9, -+}; -+ -+void yaffs_init_raw_tnodes_and_objs(yaffs_dev_t *dev) -+{ -+ yaffs_Allocator *allocator; -+ unsigned mount_id = yaffs_dev_to_lc(dev)->mount_id; -+ -+ T(YAFFS_TRACE_ALLOCATE,(TSTR("Initialising yaffs allocator\n"))); -+ -+ if(dev->allocator) -+ YBUG(); -+ else if(mount_id >= 10){ -+ T(YAFFS_TRACE_ALWAYS,(TSTR("Bad mount_id %u\n"),mount_id)); -+ } else { -+ allocator = YMALLOC(sizeof(yaffs_Allocator)); -+ memset(allocator,0,sizeof(yaffs_Allocator)); -+ dev->allocator = allocator; -+ -+ if(!dev->allocator){ -+ T(YAFFS_TRACE_ALWAYS, -+ (TSTR("yaffs allocator creation failed\n"))); -+ YBUG(); -+ return; -+ -+ } -+ -+ sprintf(allocator->tnode_name,"yaffs_t_%u",mount_id); -+ sprintf(allocator->object_name,"yaffs_o_%u",mount_id); -+ -+ allocator->tnode_cache = -+ kmem_cache_create(allocator->tnode_name, -+ dev->tnode_size, -+ 0, 0, -+ fake_ctor_list[mount_id]); -+ if(allocator->tnode_cache) -+ T(YAFFS_TRACE_ALLOCATE, -+ (TSTR("tnode cache \"%s\" %p\n"), -+ allocator->tnode_name,allocator->tnode_cache)); -+ else { -+ T(YAFFS_TRACE_ALWAYS, -+ (TSTR("yaffs cache creation failed\n"))); -+ YBUG(); -+ } -+ -+ -+ allocator->object_cache = -+ kmem_cache_create(allocator->object_name, -+ sizeof(yaffs_obj_t), -+ 0, 0, -+ fake_ctor_list[mount_id]); -+ -+ if(allocator->object_cache) -+ T(YAFFS_TRACE_ALLOCATE, -+ (TSTR("object cache \"%s\" %p\n"), -+ allocator->object_name,allocator->object_cache)); -+ -+ else { -+ T(YAFFS_TRACE_ALWAYS, -+ (TSTR("yaffs cache creation failed\n"))); -+ YBUG(); -+ } -+ } -+} -+ -+ -+yaffs_tnode_t *yaffs_alloc_raw_tnode(yaffs_dev_t *dev) -+{ -+ yaffs_Allocator *allocator = dev->allocator; -+ if(!allocator || !allocator->tnode_cache){ -+ YBUG(); -+ return NULL; -+ } -+ return kmem_cache_alloc(allocator->tnode_cache, GFP_NOFS); -+} -+ -+void yaffs_free_raw_tnode(yaffs_dev_t *dev, yaffs_tnode_t *tn) -+{ -+ yaffs_Allocator *allocator = dev->allocator; -+ kmem_cache_free(allocator->tnode_cache,tn); -+} -+ -+yaffs_obj_t *yaffs_alloc_raw_obj(yaffs_dev_t *dev) -+{ -+ yaffs_Allocator *allocator = dev->allocator; -+ if(!allocator){ -+ YBUG(); -+ return NULL; -+ } -+ if(!allocator->object_cache){ -+ YBUG(); -+ return NULL; -+ } -+ return kmem_cache_alloc(allocator->object_cache, GFP_NOFS); -+} -+ -+void yaffs_free_raw_obj(yaffs_dev_t *dev, yaffs_obj_t *obj) -+{ -+ yaffs_Allocator *allocator = dev->allocator; -+ kmem_cache_free(allocator->object_cache,obj); -+} ---- /dev/null -+++ b/fs/yaffs2/yaffs_linux.h -@@ -0,0 +1,43 @@ -+/* -+ * YAFFS: Yet another Flash File System . A NAND-flash specific file system. -+ * -+ * Copyright (C) 2002-2010 Aleph One Ltd. -+ * for Toby Churchill Ltd and Brightstar Engineering -+ * -+ * Created by Charles Manning <charles@aleph1.co.uk> -+ * -+ * This program is free software; you can redistribute it and/or modify -+ * it under the terms of the GNU Lesser General Public License version 2.1 as -+ * published by the Free Software Foundation. -+ * -+ * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL. -+ */ -+ -+#ifndef __YAFFS_LINUX_H__ -+#define __YAFFS_LINUX_H__ -+ -+#include "devextras.h" -+#include "yportenv.h" -+ -+struct yaffs_LinuxContext { -+ struct ylist_head contextList; /* List of these we have mounted */ -+ struct yaffs_dev_s *dev; -+ struct super_block * superBlock; -+ struct task_struct *bgThread; /* Background thread for this device */ -+ int bgRunning; -+ struct semaphore grossLock; /* Gross locking semaphore */ -+ __u8 *spareBuffer; /* For mtdif2 use. Don't know the size of the buffer -+ * at compile time so we have to allocate it. -+ */ -+ struct ylist_head searchContexts; -+ void (*putSuperFunc)(struct super_block *sb); -+ -+ struct task_struct *readdirProcess; -+ unsigned mount_id; -+}; -+ -+#define yaffs_dev_to_lc(dev) ((struct yaffs_LinuxContext *)((dev)->os_context)) -+#define yaffs_dev_to_mtd(dev) ((struct mtd_info *)((dev)->driver_context)) -+ -+#endif -+ ---- /dev/null -+++ b/fs/yaffs2/yaffs_list.h -@@ -0,0 +1,127 @@ -+/* -+ * YAFFS: Yet another Flash File System . A NAND-flash specific file system. -+ * -+ * Copyright (C) 2002-2010 Aleph One Ltd. -+ * for Toby Churchill Ltd and Brightstar Engineering -+ * -+ * Created by Charles Manning <charles@aleph1.co.uk> -+ * -+ * This program is free software; you can redistribute it and/or modify -+ * it under the terms of the GNU Lesser General Public License version 2.1 as -+ * published by the Free Software Foundation. -+ * -+ * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL. -+ */ -+ -+/* -+ * This file is just holds extra declarations of macros that would normally -+ * be providesd in the Linux kernel. These macros have been written from -+ * scratch but are functionally equivalent to the Linux ones. -+ * -+ */ -+ -+#ifndef __YAFFS_LIST_H__ -+#define __YAFFS_LIST_H__ -+ -+ -+#include "yportenv.h" -+ -+/* -+ * This is a simple doubly linked list implementation that matches the -+ * way the Linux kernel doubly linked list implementation works. -+ */ -+ -+struct ylist_head { -+ struct ylist_head *next; /* next in chain */ -+ struct ylist_head *prev; /* previous in chain */ -+}; -+ -+ -+/* Initialise a static list */ -+#define YLIST_HEAD(name) \ -+struct ylist_head name = { &(name), &(name)} -+ -+ -+ -+/* Initialise a list head to an empty list */ -+#define YINIT_LIST_HEAD(p) \ -+do { \ -+ (p)->next = (p);\ -+ (p)->prev = (p); \ -+} while (0) -+ -+ -+/* Add an element to a list */ -+static Y_INLINE void ylist_add(struct ylist_head *newEntry, -+ struct ylist_head *list) -+{ -+ struct ylist_head *listNext = list->next; -+ -+ list->next = newEntry; -+ newEntry->prev = list; -+ newEntry->next = listNext; -+ listNext->prev = newEntry; -+ -+} -+ -+static Y_INLINE void ylist_add_tail(struct ylist_head *newEntry, -+ struct ylist_head *list) -+{ -+ struct ylist_head *listPrev = list->prev; -+ -+ list->prev = newEntry; -+ newEntry->next = list; -+ newEntry->prev = listPrev; -+ listPrev->next = newEntry; -+ -+} -+ -+ -+/* Take an element out of its current list, with or without -+ * reinitialising the links.of the entry*/ -+static Y_INLINE void ylist_del(struct ylist_head *entry) -+{ -+ struct ylist_head *listNext = entry->next; -+ struct ylist_head *listPrev = entry->prev; -+ -+ listNext->prev = listPrev; -+ listPrev->next = listNext; -+ -+} -+ -+static Y_INLINE void ylist_del_init(struct ylist_head *entry) -+{ -+ ylist_del(entry); -+ entry->next = entry->prev = entry; -+} -+ -+ -+/* Test if the list is empty */ -+static Y_INLINE int ylist_empty(struct ylist_head *entry) -+{ -+ return (entry->next == entry); -+} -+ -+ -+/* ylist_entry takes a pointer to a list entry and offsets it to that -+ * we can find a pointer to the object it is embedded in. -+ */ -+ -+ -+#define ylist_entry(entry, type, member) \ -+ ((type *)((char *)(entry)-(unsigned long)(&((type *)NULL)->member))) -+ -+ -+/* ylist_for_each and list_for_each_safe iterate over lists. -+ * ylist_for_each_safe uses temporary storage to make the list delete safe -+ */ -+ -+#define ylist_for_each(itervar, list) \ -+ for (itervar = (list)->next; itervar != (list); itervar = itervar->next) -+ -+#define ylist_for_each_safe(itervar, saveVar, list) \ -+ for (itervar = (list)->next, saveVar = (list)->next->next; \ -+ itervar != (list); itervar = saveVar, saveVar = saveVar->next) -+ -+ -+#endif ---- a/fs/yaffs2/yaffs_mtdif1.c -+++ b/fs/yaffs2/yaffs_mtdif1.c -@@ -2,7 +2,7 @@ - * YAFFS: Yet another FFS. A NAND-flash specific file system. - * yaffs_mtdif1.c NAND mtd interface functions for small-page NAND. - * -- * Copyright (C) 2002 Aleph One Ltd. -+ * Copyright (C) 2002-2010 Aleph One Ltd. - * for Toby Churchill Ltd and Brightstar Engineering - * - * This program is free software; you can redistribute it and/or modify -@@ -18,15 +18,17 @@ - * - * These functions are invoked via function pointers in yaffs_nand.c. - * This replaces functionality provided by functions in yaffs_mtdif.c -- * and the yaffs_TagsCompatability functions in yaffs_tagscompat.c that are -+ * and the yaffs_tags_tCompatability functions in yaffs_tagscompat.c that are - * called in yaffs_mtdif.c when the function pointers are NULL. -- * We assume the MTD layer is performing ECC (useNANDECC is true). -+ * We assume the MTD layer is performing ECC (use_nand_ecc is true). - */ - - #include "yportenv.h" -+#include "yaffs_trace.h" - #include "yaffs_guts.h" - #include "yaffs_packedtags1.h" --#include "yaffs_tagscompat.h" /* for yaffs_CalcTagsECC */ -+#include "yaffs_tagscompat.h" /* for yaffs_calc_tags_ecc */ -+#include "yaffs_linux.h" - - #include "linux/kernel.h" - #include "linux/version.h" -@@ -36,8 +38,6 @@ - /* Don't compile this module if we don't have MTD's mtd_oob_ops interface */ - #if (MTD_VERSION_CODE > MTD_VERSION(2, 6, 17)) - --const char *yaffs_mtdif1_c_version = "$Id: yaffs_mtdif1.c,v 1.10 2009-03-09 07:41:10 charles Exp $"; -- - #ifndef CONFIG_YAFFS_9BYTE_TAGS - # define YTAG1_SIZE 8 - #else -@@ -51,12 +51,12 @@ const char *yaffs_mtdif1_c_version = "$I - * adjust 'oobfree' to match your existing Yaffs data. - * - * This nand_ecclayout scatters/gathers to/from the old-yaffs layout with the -- * pageStatus byte (at NAND spare offset 4) scattered/gathered from/to -+ * page_status byte (at NAND spare offset 4) scattered/gathered from/to - * the 9th byte. - * - * Old-style on-NAND format: T0,T1,T2,T3,P,B,T4,T5,E0,E1,E2,T6,T7,E3,E4,E5 -- * We have/need PackedTags1 plus pageStatus: T0,T1,T2,T3,T4,T5,T6,T7,P -- * where Tn are the tag bytes, En are MTD's ECC bytes, P is the pageStatus -+ * We have/need PackedTags1 plus page_status: T0,T1,T2,T3,T4,T5,T6,T7,P -+ * where Tn are the tag bytes, En are MTD's ECC bytes, P is the page_status - * byte and B is the small-page bad-block indicator byte. - */ - static struct nand_ecclayout nand_oob_16 = { -@@ -88,42 +88,40 @@ static struct nand_ecclayout nand_oob_16 - * Any underlying MTD error results in YAFFS_FAIL. - * Returns YAFFS_OK or YAFFS_FAIL. - */ --int nandmtd1_WriteChunkWithTagsToNAND(yaffs_Device *dev, -- int chunkInNAND, const __u8 *data, const yaffs_ExtendedTags *etags) -+int nandmtd1_WriteChunkWithTagsToNAND(yaffs_dev_t *dev, -+ int nand_chunk, const __u8 *data, const yaffs_ext_tags *etags) - { -- struct mtd_info *mtd = dev->genericDevice; -- int chunkBytes = dev->nDataBytesPerChunk; -- loff_t addr = ((loff_t)chunkInNAND) * chunkBytes; -+ struct mtd_info *mtd = yaffs_dev_to_mtd(dev); -+ int chunkBytes = dev->data_bytes_per_chunk; -+ loff_t addr = ((loff_t)nand_chunk) * chunkBytes; - struct mtd_oob_ops ops; - yaffs_PackedTags1 pt1; - int retval; - -- /* we assume that PackedTags1 and yaffs_Tags are compatible */ -+ /* we assume that PackedTags1 and yaffs_tags_t are compatible */ - compile_time_assertion(sizeof(yaffs_PackedTags1) == 12); -- compile_time_assertion(sizeof(yaffs_Tags) == 8); -- -- dev->nPageWrites++; -+ compile_time_assertion(sizeof(yaffs_tags_t) == 8); - - yaffs_PackTags1(&pt1, etags); -- yaffs_CalcTagsECC((yaffs_Tags *)&pt1); -+ yaffs_calc_tags_ecc((yaffs_tags_t *)&pt1); - - /* When deleting a chunk, the upper layer provides only skeletal -- * etags, one with chunkDeleted set. However, we need to update the -+ * etags, one with is_deleted set. However, we need to update the - * tags, not erase them completely. So we use the NAND write property - * that only zeroed-bits stick and set tag bytes to all-ones and - * zero just the (not) deleted bit. - */ - #ifndef CONFIG_YAFFS_9BYTE_TAGS -- if (etags->chunkDeleted) { -+ if (etags->is_deleted) { - memset(&pt1, 0xff, 8); - /* clear delete status bit to indicate deleted */ - pt1.deleted = 0; - } - #else - ((__u8 *)&pt1)[8] = 0xff; -- if (etags->chunkDeleted) { -+ if (etags->is_deleted) { - memset(&pt1, 0xff, 8); -- /* zero pageStatus byte to indicate deleted */ -+ /* zero page_status byte to indicate deleted */ - ((__u8 *)&pt1)[8] = 0; - } - #endif -@@ -137,20 +135,20 @@ int nandmtd1_WriteChunkWithTagsToNAND(ya - - retval = mtd->write_oob(mtd, addr, &ops); - if (retval) { -- yaffs_trace(YAFFS_TRACE_MTD, -- "write_oob failed, chunk %d, mtd error %d\n", -- chunkInNAND, retval); -+ T(YAFFS_TRACE_MTD, -+ (TSTR("write_oob failed, chunk %d, mtd error %d"TENDSTR), -+ nand_chunk, retval)); - } - return retval ? YAFFS_FAIL : YAFFS_OK; - } - --/* Return with empty ExtendedTags but add eccResult. -+/* Return with empty ExtendedTags but add ecc_result. - */ --static int rettags(yaffs_ExtendedTags *etags, int eccResult, int retval) -+static int rettags(yaffs_ext_tags *etags, int ecc_result, int retval) - { - if (etags) { - memset(etags, 0, sizeof(*etags)); -- etags->eccResult = eccResult; -+ etags->ecc_result = ecc_result; - } - return retval; - } -@@ -158,30 +156,28 @@ static int rettags(yaffs_ExtendedTags *e - /* Read a chunk (page) from NAND. - * - * Caller expects ExtendedTags data to be usable even on error; that is, -- * all members except eccResult and blockBad are zeroed. -+ * all members except ecc_result and block_bad are zeroed. - * - * - Check ECC results for data (if applicable) - * - Check for blank/erased block (return empty ExtendedTags if blank) - * - Check the PackedTags1 mini-ECC (correct if necessary/possible) - * - Convert PackedTags1 to ExtendedTags -- * - Update eccResult and blockBad members to refect state. -+ * - Update ecc_result and block_bad members to refect state. - * - * Returns YAFFS_OK or YAFFS_FAIL. - */ --int nandmtd1_ReadChunkWithTagsFromNAND(yaffs_Device *dev, -- int chunkInNAND, __u8 *data, yaffs_ExtendedTags *etags) -+int nandmtd1_ReadChunkWithTagsFromNAND(yaffs_dev_t *dev, -+ int nand_chunk, __u8 *data, yaffs_ext_tags *etags) - { -- struct mtd_info *mtd = dev->genericDevice; -- int chunkBytes = dev->nDataBytesPerChunk; -- loff_t addr = ((loff_t)chunkInNAND) * chunkBytes; -+ struct mtd_info *mtd = yaffs_dev_to_mtd(dev); -+ int chunkBytes = dev->data_bytes_per_chunk; -+ loff_t addr = ((loff_t)nand_chunk) * chunkBytes; - int eccres = YAFFS_ECC_RESULT_NO_ERROR; - struct mtd_oob_ops ops; - yaffs_PackedTags1 pt1; - int retval; - int deleted; - -- dev->nPageReads++; -- - memset(&ops, 0, sizeof(ops)); - ops.mode = MTD_OOB_AUTO; - ops.len = (data) ? chunkBytes : 0; -@@ -200,9 +196,9 @@ int nandmtd1_ReadChunkWithTagsFromNAND(y - */ - retval = mtd->read_oob(mtd, addr, &ops); - if (retval) { -- yaffs_trace(YAFFS_TRACE_MTD, -- "read_oob failed, chunk %d, mtd error %d\n", -- chunkInNAND, retval); -+ T(YAFFS_TRACE_MTD, -+ (TSTR("read_oob failed, chunk %d, mtd error %d"TENDSTR), -+ nand_chunk, retval)); - } - - switch (retval) { -@@ -213,23 +209,23 @@ int nandmtd1_ReadChunkWithTagsFromNAND(y - case -EUCLEAN: - /* MTD's ECC fixed the data */ - eccres = YAFFS_ECC_RESULT_FIXED; -- dev->eccFixed++; -+ dev->n_ecc_fixed++; - break; - - case -EBADMSG: - /* MTD's ECC could not fix the data */ -- dev->eccUnfixed++; -+ dev->n_ecc_unfixed++; - /* fall into... */ - default: - rettags(etags, YAFFS_ECC_RESULT_UNFIXED, 0); -- etags->blockBad = (mtd->block_isbad)(mtd, addr); -+ etags->block_bad = (mtd->block_isbad)(mtd, addr); - return YAFFS_FAIL; - } - - /* Check for a blank/erased chunk. - */ -- if (yaffs_CheckFF((__u8 *)&pt1, 8)) { -- /* when blank, upper layers want eccResult to be <= NO_ERROR */ -+ if (yaffs_check_ff((__u8 *)&pt1, 8)) { -+ /* when blank, upper layers want ecc_result to be <= NO_ERROR */ - return rettags(etags, YAFFS_ECC_RESULT_NO_ERROR, YAFFS_OK); - } - -@@ -241,37 +237,37 @@ int nandmtd1_ReadChunkWithTagsFromNAND(y - deleted = !pt1.deleted; - pt1.deleted = 1; - #else -- deleted = (yaffs_CountBits(((__u8 *)&pt1)[8]) < 7); -+ deleted = (yaffs_count_bits(((__u8 *)&pt1)[8]) < 7); - #endif - - /* Check the packed tags mini-ECC and correct if necessary/possible. - */ -- retval = yaffs_CheckECCOnTags((yaffs_Tags *)&pt1); -+ retval = yaffs_check_tags_ecc((yaffs_tags_t *)&pt1); - switch (retval) { - case 0: - /* no tags error, use MTD result */ - break; - case 1: - /* recovered tags-ECC error */ -- dev->tagsEccFixed++; -+ dev->n_tags_ecc_fixed++; - if (eccres == YAFFS_ECC_RESULT_NO_ERROR) - eccres = YAFFS_ECC_RESULT_FIXED; - break; - default: - /* unrecovered tags-ECC error */ -- dev->tagsEccUnfixed++; -+ dev->n_tags_ecc_unfixed++; - return rettags(etags, YAFFS_ECC_RESULT_UNFIXED, YAFFS_FAIL); - } - - /* Unpack the tags to extended form and set ECC result. -- * [set shouldBeFF just to keep yaffs_UnpackTags1 happy] -+ * [set shouldBeFF just to keep yaffs_unpack_tags1 happy] - */ - pt1.shouldBeFF = 0xFFFFFFFF; -- yaffs_UnpackTags1(etags, &pt1); -- etags->eccResult = eccres; -+ yaffs_unpack_tags1(etags, &pt1); -+ etags->ecc_result = eccres; - - /* Set deleted state */ -- etags->chunkDeleted = deleted; -+ etags->is_deleted = deleted; - return YAFFS_OK; - } - -@@ -282,15 +278,15 @@ int nandmtd1_ReadChunkWithTagsFromNAND(y - * - * Returns YAFFS_OK or YAFFS_FAIL. - */ --int nandmtd1_MarkNANDBlockBad(struct yaffs_DeviceStruct *dev, int blockNo) -+int nandmtd1_MarkNANDBlockBad(struct yaffs_dev_s *dev, int block_no) - { -- struct mtd_info *mtd = dev->genericDevice; -- int blocksize = dev->nChunksPerBlock * dev->nDataBytesPerChunk; -+ struct mtd_info *mtd = yaffs_dev_to_mtd(dev); -+ int blocksize = dev->param.chunks_per_block * dev->data_bytes_per_chunk; - int retval; - -- yaffs_trace(YAFFS_TRACE_BAD_BLOCKS, "marking block %d bad\n", blockNo); -+ T(YAFFS_TRACE_BAD_BLOCKS,(TSTR("marking block %d bad"TENDSTR), block_no)); - -- retval = mtd->block_markbad(mtd, (loff_t)blocksize * blockNo); -+ retval = mtd->block_markbad(mtd, (loff_t)blocksize * block_no); - return (retval) ? YAFFS_FAIL : YAFFS_OK; - } - -@@ -305,9 +301,9 @@ static int nandmtd1_TestPrerequists(stru - int oobavail = mtd->ecclayout->oobavail; - - if (oobavail < YTAG1_SIZE) { -- yaffs_trace(YAFFS_TRACE_ERROR, -- "mtd device has only %d bytes for tags, need %d\n", -- oobavail, YTAG1_SIZE); -+ T(YAFFS_TRACE_ERROR, -+ (TSTR("mtd device has only %d bytes for tags, need %d"TENDSTR), -+ oobavail, YTAG1_SIZE)); - return YAFFS_FAIL; - } - return YAFFS_OK; -@@ -322,13 +318,13 @@ static int nandmtd1_TestPrerequists(stru - * - * Always returns YAFFS_OK. - */ --int nandmtd1_QueryNANDBlock(struct yaffs_DeviceStruct *dev, int blockNo, -- yaffs_BlockState *pState, __u32 *pSequenceNumber) -+int nandmtd1_QueryNANDBlock(struct yaffs_dev_s *dev, int block_no, -+ yaffs_block_state_t *pState, __u32 *pSequenceNumber) - { -- struct mtd_info *mtd = dev->genericDevice; -- int chunkNo = blockNo * dev->nChunksPerBlock; -- loff_t addr = (loff_t)chunkNo * dev->nDataBytesPerChunk; -- yaffs_ExtendedTags etags; -+ struct mtd_info *mtd = yaffs_dev_to_mtd(dev); -+ int chunkNo = block_no * dev->param.chunks_per_block; -+ loff_t addr = (loff_t)chunkNo * dev->data_bytes_per_chunk; -+ yaffs_ext_tags etags; - int state = YAFFS_BLOCK_STATE_DEAD; - int seqnum = 0; - int retval; -@@ -340,17 +336,17 @@ int nandmtd1_QueryNANDBlock(struct yaffs - return YAFFS_FAIL; - - retval = nandmtd1_ReadChunkWithTagsFromNAND(dev, chunkNo, NULL, &etags); -- etags.blockBad = (mtd->block_isbad)(mtd, addr); -- if (etags.blockBad) { -- yaffs_trace(YAFFS_TRACE_BAD_BLOCKS, -- "block %d is marked bad\n", blockNo); -+ etags.block_bad = (mtd->block_isbad)(mtd, addr); -+ if (etags.block_bad) { -+ T(YAFFS_TRACE_BAD_BLOCKS, -+ (TSTR("block %d is marked bad"TENDSTR), block_no)); - state = YAFFS_BLOCK_STATE_DEAD; -- } else if (etags.eccResult != YAFFS_ECC_RESULT_NO_ERROR) { -+ } else if (etags.ecc_result != YAFFS_ECC_RESULT_NO_ERROR) { - /* bad tags, need to look more closely */ - state = YAFFS_BLOCK_STATE_NEEDS_SCANNING; -- } else if (etags.chunkUsed) { -+ } else if (etags.chunk_used) { - state = YAFFS_BLOCK_STATE_NEEDS_SCANNING; -- seqnum = etags.sequenceNumber; -+ seqnum = etags.seq_number; - } else { - state = YAFFS_BLOCK_STATE_EMPTY; - } ---- a/fs/yaffs2/yaffs_mtdif1-compat.c -+++ /dev/null -@@ -1,434 +0,0 @@ --From ian@brightstareng.com Fri May 18 15:06:49 2007 --From ian@brightstareng.com Fri May 18 15:08:21 2007 --Received: from 206.173.66.57.ptr.us.xo.net ([206.173.66.57] helo=zebra.brightstareng.com) -- by apollo.linkchoose.co.uk with esmtp (Exim 4.60) -- (envelope-from <ian@brightstareng.com>) -- id 1Hp380-00011e-T6 -- for david.goodenough@linkchoose.co.uk; Fri, 18 May 2007 15:08:21 +0100 --Received: from localhost (localhost.localdomain [127.0.0.1]) -- by zebra.brightstareng.com (Postfix) with ESMTP -- id 4819F28C004; Fri, 18 May 2007 10:07:49 -0400 (EDT) --Received: from zebra.brightstareng.com ([127.0.0.1]) -- by localhost (zebra [127.0.0.1]) (amavisd-new, port 10024) with ESMTP -- id 05328-06; Fri, 18 May 2007 10:07:16 -0400 (EDT) --Received: from pippin (unknown [192.168.1.25]) -- by zebra.brightstareng.com (Postfix) with ESMTP -- id 8BEF528C1BC; Fri, 18 May 2007 10:06:53 -0400 (EDT) --From: Ian McDonnell <ian@brightstareng.com> --To: David Goodenough <david.goodenough@linkchoose.co.uk> --Subject: Re: something tested this time -- yaffs_mtdif1-compat.c --Date: Fri, 18 May 2007 10:06:49 -0400 --User-Agent: KMail/1.9.1 --References: <200705142207.06909.ian@brightstareng.com> <200705171131.53536.ian@brightstareng.com> <200705181334.32166.david.goodenough@linkchoose.co.uk> --In-Reply-To: <200705181334.32166.david.goodenough@linkchoose.co.uk> --Cc: Andrea Conti <alyf@alyf.net>, -- Charles Manning <manningc2@actrix.gen.nz> --MIME-Version: 1.0 --Content-Type: Multipart/Mixed; -- boundary="Boundary-00=_5LbTGmt62YoutxM" --Message-Id: <200705181006.49860.ian@brightstareng.com> --X-Virus-Scanned: by amavisd-new at brightstareng.com --Status: R --X-Status: NT --X-KMail-EncryptionState: --X-KMail-SignatureState: --X-KMail-MDN-Sent: -- ----Boundary-00=_5LbTGmt62YoutxM --Content-Type: text/plain; -- charset="iso-8859-15" --Content-Transfer-Encoding: 7bit --Content-Disposition: inline -- --David, Andrea, -- --On Friday 18 May 2007 08:34, you wrote: --> Yea team. With this fix in place (I put it in the wrong place --> at first) I can now mount and ls the Yaffs partition without --> an error messages! -- --Good news! -- --Attached is a newer yaffs_mtdif1.c with a bandaid to help the --2.6.18 and 2.6.19 versions of MTD not trip on the oob read. --See the LINUX_VERSION_CODE conditional in --nandmtd1_ReadChunkWithTagsFromNAND. -- ---imcd -- ----Boundary-00=_5LbTGmt62YoutxM --Content-Type: text/x-csrc; -- charset="iso-8859-15"; -- name="yaffs_mtdif1.c" --Content-Transfer-Encoding: 7bit --Content-Disposition: attachment; -- filename="yaffs_mtdif1.c" -- --/* -- * YAFFS: Yet another FFS. A NAND-flash specific file system. -- * yaffs_mtdif1.c NAND mtd interface functions for small-page NAND. -- * -- * Copyright (C) 2002 Aleph One Ltd. -- * for Toby Churchill Ltd and Brightstar Engineering -- * -- * This program is free software; you can redistribute it and/or modify -- * it under the terms of the GNU General Public License version 2 as -- * published by the Free Software Foundation. -- */ -- --/* -- * This module provides the interface between yaffs_nand.c and the -- * MTD API. This version is used when the MTD interface supports the -- * 'mtd_oob_ops' style calls to read_oob and write_oob, circa 2.6.17, -- * and we have small-page NAND device. -- * -- * These functions are invoked via function pointers in yaffs_nand.c. -- * This replaces functionality provided by functions in yaffs_mtdif.c -- * and the yaffs_TagsCompatability functions in yaffs_tagscompat.c that are -- * called in yaffs_mtdif.c when the function pointers are NULL. -- * We assume the MTD layer is performing ECC (useNANDECC is true). -- */ -- --#include "yportenv.h" --#include "yaffs_guts.h" --#include "yaffs_packedtags1.h" --#include "yaffs_tagscompat.h" // for yaffs_CalcTagsECC -- --#include "linux/kernel.h" --#include "linux/version.h" --#include "linux/types.h" --#include "linux/mtd/mtd.h" -- --/* Don't compile this module if we don't have MTD's mtd_oob_ops interface */ --#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17)) -- --const char *yaffs_mtdif1_c_version = "$Id$"; -- --#ifndef CONFIG_YAFFS_9BYTE_TAGS --# define YTAG1_SIZE 8 --#else --# define YTAG1_SIZE 9 --#endif -- --#if 0 --/* Use the following nand_ecclayout with MTD when using -- * CONFIG_YAFFS_9BYTE_TAGS and the older on-NAND tags layout. -- * If you have existing Yaffs images and the byte order differs from this, -- * adjust 'oobfree' to match your existing Yaffs data. -- * -- * This nand_ecclayout scatters/gathers to/from the old-yaffs layout with the -- * pageStatus byte (at NAND spare offset 4) scattered/gathered from/to -- * the 9th byte. -- * -- * Old-style on-NAND format: T0,T1,T2,T3,P,B,T4,T5,E0,E1,E2,T6,T7,E3,E4,E5 -- * We have/need PackedTags1 plus pageStatus: T0,T1,T2,T3,T4,T5,T6,T7,P -- * where Tn are the tag bytes, En are MTD's ECC bytes, P is the pageStatus -- * byte and B is the small-page bad-block indicator byte. -- */ --static struct nand_ecclayout nand_oob_16 = { -- .eccbytes = 6, -- .eccpos = { 8, 9, 10, 13, 14, 15 }, -- .oobavail = 9, -- .oobfree = { { 0, 4 }, { 6, 2 }, { 11, 2 }, { 4, 1 } } --}; --#endif -- --/* Write a chunk (page) of data to NAND. -- * -- * Caller always provides ExtendedTags data which are converted to a more -- * compact (packed) form for storage in NAND. A mini-ECC runs over the -- * contents of the tags meta-data; used to valid the tags when read. -- * -- * - Pack ExtendedTags to PackedTags1 form -- * - Compute mini-ECC for PackedTags1 -- * - Write data and packed tags to NAND. -- * -- * Note: Due to the use of the PackedTags1 meta-data which does not include -- * a full sequence number (as found in the larger PackedTags2 form) it is -- * necessary for Yaffs to re-write a chunk/page (just once) to mark it as -- * discarded and dirty. This is not ideal: newer NAND parts are supposed -- * to be written just once. When Yaffs performs this operation, this -- * function is called with a NULL data pointer -- calling MTD write_oob -- * without data is valid usage (2.6.17). -- * -- * Any underlying MTD error results in YAFFS_FAIL. -- * Returns YAFFS_OK or YAFFS_FAIL. -- */ --int nandmtd1_WriteChunkWithTagsToNAND(yaffs_Device *dev, -- int chunkInNAND, const __u8 * data, const yaffs_ExtendedTags * etags) --{ -- struct mtd_info * mtd = dev->genericDevice; -- int chunkBytes = dev->nDataBytesPerChunk; -- loff_t addr = ((loff_t)chunkInNAND) * chunkBytes; -- struct mtd_oob_ops ops; -- yaffs_PackedTags1 pt1; -- int retval; -- -- /* we assume that PackedTags1 and yaffs_Tags are compatible */ -- compile_time_assertion(sizeof(yaffs_PackedTags1) == 12); -- compile_time_assertion(sizeof(yaffs_Tags) == 8); -- -- yaffs_PackTags1(&pt1, etags); -- yaffs_CalcTagsECC((yaffs_Tags *)&pt1); -- -- /* When deleting a chunk, the upper layer provides only skeletal -- * etags, one with chunkDeleted set. However, we need to update the -- * tags, not erase them completely. So we use the NAND write property -- * that only zeroed-bits stick and set tag bytes to all-ones and -- * zero just the (not) deleted bit. -- */ --#ifndef CONFIG_YAFFS_9BYTE_TAGS -- if (etags->chunkDeleted) { -- memset(&pt1, 0xff, 8); -- /* clear delete status bit to indicate deleted */ -- pt1.deleted = 0; -- } --#else -- ((__u8 *)&pt1)[8] = 0xff; -- if (etags->chunkDeleted) { -- memset(&pt1, 0xff, 8); -- /* zero pageStatus byte to indicate deleted */ -- ((__u8 *)&pt1)[8] = 0; -- } --#endif -- -- memset(&ops, 0, sizeof(ops)); -- ops.mode = MTD_OOB_AUTO; -- ops.len = (data) ? chunkBytes : 0; -- ops.ooblen = YTAG1_SIZE; -- ops.datbuf = (__u8 *)data; -- ops.oobbuf = (__u8 *)&pt1; -- -- retval = mtd->write_oob(mtd, addr, &ops); -- if (retval) { -- yaffs_trace(YAFFS_TRACE_MTD, -- "write_oob failed, chunk %d, mtd error %d\n", -- chunkInNAND, retval); -- } -- return retval ? YAFFS_FAIL : YAFFS_OK; --} -- --/* Return with empty ExtendedTags but add eccResult. -- */ --static int rettags(yaffs_ExtendedTags * etags, int eccResult, int retval) --{ -- if (etags) { -- memset(etags, 0, sizeof(*etags)); -- etags->eccResult = eccResult; -- } -- return retval; --} -- --/* Read a chunk (page) from NAND. -- * -- * Caller expects ExtendedTags data to be usable even on error; that is, -- * all members except eccResult and blockBad are zeroed. -- * -- * - Check ECC results for data (if applicable) -- * - Check for blank/erased block (return empty ExtendedTags if blank) -- * - Check the PackedTags1 mini-ECC (correct if necessary/possible) -- * - Convert PackedTags1 to ExtendedTags -- * - Update eccResult and blockBad members to refect state. -- * -- * Returns YAFFS_OK or YAFFS_FAIL. -- */ --int nandmtd1_ReadChunkWithTagsFromNAND(yaffs_Device *dev, -- int chunkInNAND, __u8 * data, yaffs_ExtendedTags * etags) --{ -- struct mtd_info * mtd = dev->genericDevice; -- int chunkBytes = dev->nDataBytesPerChunk; -- loff_t addr = ((loff_t)chunkInNAND) * chunkBytes; -- int eccres = YAFFS_ECC_RESULT_NO_ERROR; -- struct mtd_oob_ops ops; -- yaffs_PackedTags1 pt1; -- int retval; -- int deleted; -- -- memset(&ops, 0, sizeof(ops)); -- ops.mode = MTD_OOB_AUTO; -- ops.len = (data) ? chunkBytes : 0; -- ops.ooblen = YTAG1_SIZE; -- ops.datbuf = data; -- ops.oobbuf = (__u8 *)&pt1; -- --#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,20)) -- /* In MTD 2.6.18 to 2.6.19 nand_base.c:nand_do_read_oob() has a bug; -- * help it out with ops.len = ops.ooblen when ops.datbuf == NULL. -- */ -- ops.len = (ops.datbuf) ? ops.len : ops.ooblen; --#endif -- /* Read page and oob using MTD. -- * Check status and determine ECC result. -- */ -- retval = mtd->read_oob(mtd, addr, &ops); -- if (retval) { -- yaffs_trace(YAFFS_TRACE_MTD, -- "read_oob failed, chunk %d, mtd error %d\n", -- chunkInNAND, retval); -- } -- -- switch (retval) { -- case 0: -- /* no error */ -- break; -- -- case -EUCLEAN: -- /* MTD's ECC fixed the data */ -- eccres = YAFFS_ECC_RESULT_FIXED; -- dev->eccFixed++; -- break; -- -- case -EBADMSG: -- /* MTD's ECC could not fix the data */ -- dev->eccUnfixed++; -- /* fall into... */ -- default: -- rettags(etags, YAFFS_ECC_RESULT_UNFIXED, 0); -- etags->blockBad = (mtd->block_isbad)(mtd, addr); -- return YAFFS_FAIL; -- } -- -- /* Check for a blank/erased chunk. -- */ -- if (yaffs_CheckFF((__u8 *)&pt1, 8)) { -- /* when blank, upper layers want eccResult to be <= NO_ERROR */ -- return rettags(etags, YAFFS_ECC_RESULT_NO_ERROR, YAFFS_OK); -- } -- --#ifndef CONFIG_YAFFS_9BYTE_TAGS -- /* Read deleted status (bit) then return it to it's non-deleted -- * state before performing tags mini-ECC check. pt1.deleted is -- * inverted. -- */ -- deleted = !pt1.deleted; -- pt1.deleted = 1; --#else -- (void) deleted; /* not used */ --#endif -- -- /* Check the packed tags mini-ECC and correct if necessary/possible. -- */ -- retval = yaffs_CheckECCOnTags((yaffs_Tags *)&pt1); -- switch (retval) { -- case 0: -- /* no tags error, use MTD result */ -- break; -- case 1: -- /* recovered tags-ECC error */ -- dev->tagsEccFixed++; -- eccres = YAFFS_ECC_RESULT_FIXED; -- break; -- default: -- /* unrecovered tags-ECC error */ -- dev->tagsEccUnfixed++; -- return rettags(etags, YAFFS_ECC_RESULT_UNFIXED, YAFFS_FAIL); -- } -- -- /* Unpack the tags to extended form and set ECC result. -- * [set shouldBeFF just to keep yaffs_UnpackTags1 happy] -- */ -- pt1.shouldBeFF = 0xFFFFFFFF; -- yaffs_UnpackTags1(etags, &pt1); -- etags->eccResult = eccres; -- -- /* Set deleted state. -- */ --#ifndef CONFIG_YAFFS_9BYTE_TAGS -- etags->chunkDeleted = deleted; --#else -- etags->chunkDeleted = (yaffs_CountBits(((__u8 *)&pt1)[8]) < 7); --#endif -- return YAFFS_OK; --} -- --/* Mark a block bad. -- * -- * This is a persistant state. -- * Use of this function should be rare. -- * -- * Returns YAFFS_OK or YAFFS_FAIL. -- */ --int nandmtd1_MarkNANDBlockBad(struct yaffs_DeviceStruct *dev, int blockNo) --{ -- struct mtd_info * mtd = dev->genericDevice; -- int blocksize = dev->nChunksPerBlock * dev->nDataBytesPerChunk; -- int retval; -- -- yaffs_trace(YAFFS_TRACE_BAD_BLOCKS, "marking block %d bad", blockNo); -- -- retval = mtd->block_markbad(mtd, (loff_t)blocksize * blockNo); -- return (retval) ? YAFFS_FAIL : YAFFS_OK; --} -- --/* Check any MTD prerequists. -- * -- * Returns YAFFS_OK or YAFFS_FAIL. -- */ --static int nandmtd1_TestPrerequists(struct mtd_info * mtd) --{ -- /* 2.6.18 has mtd->ecclayout->oobavail */ -- /* 2.6.21 has mtd->ecclayout->oobavail and mtd->oobavail */ -- int oobavail = mtd->ecclayout->oobavail; -- -- if (oobavail < YTAG1_SIZE) { -- yaffs_trace(YAFFS_TRACE_ERROR, -- "mtd device has only %d bytes for tags, need %d", -- oobavail, YTAG1_SIZE); -- return YAFFS_FAIL; -- } -- return YAFFS_OK; --} -- --/* Query for the current state of a specific block. -- * -- * Examine the tags of the first chunk of the block and return the state: -- * - YAFFS_BLOCK_STATE_DEAD, the block is marked bad -- * - YAFFS_BLOCK_STATE_NEEDS_SCANNING, the block is in use -- * - YAFFS_BLOCK_STATE_EMPTY, the block is clean -- * -- * Always returns YAFFS_OK. -- */ --int nandmtd1_QueryNANDBlock(struct yaffs_DeviceStruct *dev, int blockNo, -- yaffs_BlockState * pState, int *pSequenceNumber) --{ -- struct mtd_info * mtd = dev->genericDevice; -- int chunkNo = blockNo * dev->nChunksPerBlock; -- yaffs_ExtendedTags etags; -- int state = YAFFS_BLOCK_STATE_DEAD; -- int seqnum = 0; -- int retval; -- -- /* We don't yet have a good place to test for MTD config prerequists. -- * Do it here as we are called during the initial scan. -- */ -- if (nandmtd1_TestPrerequists(mtd) != YAFFS_OK) { -- return YAFFS_FAIL; -- } -- -- retval = nandmtd1_ReadChunkWithTagsFromNAND(dev, chunkNo, NULL, &etags); -- if (etags.blockBad) { -- yaffs_trace(YAFFS_TRACE_BAD_BLOCKS, -- "block %d is marked bad", blockNo); -- state = YAFFS_BLOCK_STATE_DEAD; -- } -- else if (etags.chunkUsed) { -- state = YAFFS_BLOCK_STATE_NEEDS_SCANNING; -- seqnum = etags.sequenceNumber; -- } -- else { -- state = YAFFS_BLOCK_STATE_EMPTY; -- } -- -- *pState = state; -- *pSequenceNumber = seqnum; -- -- /* query always succeeds */ -- return YAFFS_OK; --} -- --#endif /*KERNEL_VERSION*/ -- ----Boundary-00=_5LbTGmt62YoutxM-- -- -- -- ---- a/fs/yaffs2/yaffs_mtdif1.h -+++ b/fs/yaffs2/yaffs_mtdif1.h -@@ -1,7 +1,7 @@ - /* - * YAFFS: Yet another Flash File System. A NAND-flash specific file system. - * -- * Copyright (C) 2002-2007 Aleph One Ltd. -+ * Copyright (C) 2002-2010 Aleph One Ltd. - * for Toby Churchill Ltd and Brightstar Engineering - * - * This program is free software; you can redistribute it and/or modify -@@ -14,15 +14,15 @@ - #ifndef __YAFFS_MTDIF1_H__ - #define __YAFFS_MTDIF1_H__ - --int nandmtd1_WriteChunkWithTagsToNAND(yaffs_Device *dev, int chunkInNAND, -- const __u8 *data, const yaffs_ExtendedTags *tags); -+int nandmtd1_WriteChunkWithTagsToNAND(yaffs_dev_t *dev, int nand_chunk, -+ const __u8 *data, const yaffs_ext_tags *tags); - --int nandmtd1_ReadChunkWithTagsFromNAND(yaffs_Device *dev, int chunkInNAND, -- __u8 *data, yaffs_ExtendedTags *tags); -+int nandmtd1_ReadChunkWithTagsFromNAND(yaffs_dev_t *dev, int nand_chunk, -+ __u8 *data, yaffs_ext_tags *tags); - --int nandmtd1_MarkNANDBlockBad(struct yaffs_DeviceStruct *dev, int blockNo); -+int nandmtd1_MarkNANDBlockBad(struct yaffs_dev_s *dev, int block_no); - --int nandmtd1_QueryNANDBlock(struct yaffs_DeviceStruct *dev, int blockNo, -- yaffs_BlockState *state, __u32 *sequenceNumber); -+int nandmtd1_QueryNANDBlock(struct yaffs_dev_s *dev, int block_no, -+ yaffs_block_state_t *state, __u32 *seq_number); - - #endif ---- a/fs/yaffs2/yaffs_mtdif2.c -+++ b/fs/yaffs2/yaffs_mtdif2.c -@@ -1,7 +1,7 @@ - /* - * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. - * -- * Copyright (C) 2002-2007 Aleph One Ltd. -+ * Copyright (C) 2002-2010 Aleph One Ltd. - * for Toby Churchill Ltd and Brightstar Engineering - * - * Created by Charles Manning <charles@aleph1.co.uk> -@@ -13,11 +13,8 @@ - - /* mtd interface for YAFFS2 */ - --const char *yaffs_mtdif2_c_version = -- "$Id: yaffs_mtdif2.c,v 1.23 2009-03-06 17:20:53 wookey Exp $"; -- - #include "yportenv.h" -- -+#include "yaffs_trace.h" - - #include "yaffs_mtdif2.h" - -@@ -27,15 +24,17 @@ const char *yaffs_mtdif2_c_version = - - #include "yaffs_packedtags2.h" - -+#include "yaffs_linux.h" -+ - /* NB For use with inband tags.... - * We assume that the data buffer is of size totalBytersPerChunk so that we can also - * use it to load the tags. - */ --int nandmtd2_WriteChunkWithTagsToNAND(yaffs_Device *dev, int chunkInNAND, -+int nandmtd2_WriteChunkWithTagsToNAND(yaffs_dev_t *dev, int nand_chunk, - const __u8 *data, -- const yaffs_ExtendedTags *tags) -+ const yaffs_ext_tags *tags) - { -- struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice); -+ struct mtd_info *mtd = yaffs_dev_to_mtd(dev); - #if (MTD_VERSION_CODE > MTD_VERSION(2, 6, 17)) - struct mtd_oob_ops ops; - #else -@@ -47,13 +46,16 @@ int nandmtd2_WriteChunkWithTagsToNAND(ya - - yaffs_PackedTags2 pt; - -+ int packed_tags_size = dev->param.no_tags_ecc ? sizeof(pt.t) : sizeof(pt); -+ void * packed_tags_ptr = dev->param.no_tags_ecc ? (void *) &pt.t : (void *)&pt; -+ - T(YAFFS_TRACE_MTD, - (TSTR - ("nandmtd2_WriteChunkWithTagsToNAND chunk %d data %p tags %p" -- TENDSTR), chunkInNAND, data, tags)); -+ TENDSTR), nand_chunk, data, tags)); - - -- addr = ((loff_t) chunkInNAND) * dev->totalBytesPerChunk; -+ addr = ((loff_t) nand_chunk) * dev->param.total_bytes_per_chunk; - - /* For yaffs2 writing there must be both data and tags. - * If we're using inband tags, then the tags are stuffed into -@@ -61,30 +63,30 @@ int nandmtd2_WriteChunkWithTagsToNAND(ya - */ - if (!data || !tags) - BUG(); -- else if (dev->inbandTags) { -+ else if (dev->param.inband_tags) { - yaffs_PackedTags2TagsPart *pt2tp; -- pt2tp = (yaffs_PackedTags2TagsPart *)(data + dev->nDataBytesPerChunk); -+ pt2tp = (yaffs_PackedTags2TagsPart *)(data + dev->data_bytes_per_chunk); - yaffs_PackTags2TagsPart(pt2tp, tags); - } else -- yaffs_PackTags2(&pt, tags); -+ yaffs_PackTags2(&pt, tags, !dev->param.no_tags_ecc); - - #if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) - ops.mode = MTD_OOB_AUTO; -- ops.ooblen = (dev->inbandTags) ? 0 : sizeof(pt); -- ops.len = dev->totalBytesPerChunk; -+ ops.ooblen = (dev->param.inband_tags) ? 0 : packed_tags_size; -+ ops.len = dev->param.total_bytes_per_chunk; - ops.ooboffs = 0; - ops.datbuf = (__u8 *)data; -- ops.oobbuf = (dev->inbandTags) ? NULL : (void *)&pt; -+ ops.oobbuf = (dev->param.inband_tags) ? NULL : packed_tags_ptr; - retval = mtd->write_oob(mtd, addr, &ops); - - #else -- if (!dev->inbandTags) { -+ if (!dev->param.inband_tags) { - retval = -- mtd->write_ecc(mtd, addr, dev->nDataBytesPerChunk, -- &dummy, data, (__u8 *) &pt, NULL); -+ mtd->write_ecc(mtd, addr, dev->data_bytes_per_chunk, -+ &dummy, data, (__u8 *) packed_tags_ptr, NULL); - } else { - retval = -- mtd->write(mtd, addr, dev->totalBytesPerChunk, &dummy, -+ mtd->write(mtd, addr, dev->param.total_bytes_per_chunk, &dummy, - data); - } - #endif -@@ -95,10 +97,10 @@ int nandmtd2_WriteChunkWithTagsToNAND(ya - return YAFFS_FAIL; - } - --int nandmtd2_ReadChunkWithTagsFromNAND(yaffs_Device *dev, int chunkInNAND, -- __u8 *data, yaffs_ExtendedTags *tags) -+int nandmtd2_ReadChunkWithTagsFromNAND(yaffs_dev_t *dev, int nand_chunk, -+ __u8 *data, yaffs_ext_tags *tags) - { -- struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice); -+ struct mtd_info *mtd = yaffs_dev_to_mtd(dev); - #if (MTD_VERSION_CODE > MTD_VERSION(2, 6, 17)) - struct mtd_oob_ops ops; - #endif -@@ -106,20 +108,23 @@ int nandmtd2_ReadChunkWithTagsFromNAND(y - int retval = 0; - int localData = 0; - -- loff_t addr = ((loff_t) chunkInNAND) * dev->totalBytesPerChunk; -+ loff_t addr = ((loff_t) nand_chunk) * dev->param.total_bytes_per_chunk; - - yaffs_PackedTags2 pt; - -+ int packed_tags_size = dev->param.no_tags_ecc ? sizeof(pt.t) : sizeof(pt); -+ void * packed_tags_ptr = dev->param.no_tags_ecc ? (void *) &pt.t: (void *)&pt; -+ - T(YAFFS_TRACE_MTD, - (TSTR - ("nandmtd2_ReadChunkWithTagsFromNAND chunk %d data %p tags %p" -- TENDSTR), chunkInNAND, data, tags)); -+ TENDSTR), nand_chunk, data, tags)); - -- if (dev->inbandTags) { -+ if (dev->param.inband_tags) { - - if (!data) { - localData = 1; -- data = yaffs_GetTempBuffer(dev, __LINE__); -+ data = yaffs_get_temp_buffer(dev, __LINE__); - } - - -@@ -127,30 +132,30 @@ int nandmtd2_ReadChunkWithTagsFromNAND(y - - - #if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) -- if (dev->inbandTags || (data && !tags)) -- retval = mtd->read(mtd, addr, dev->totalBytesPerChunk, -+ if (dev->param.inband_tags || (data && !tags)) -+ retval = mtd->read(mtd, addr, dev->param.total_bytes_per_chunk, - &dummy, data); - else if (tags) { - ops.mode = MTD_OOB_AUTO; -- ops.ooblen = sizeof(pt); -- ops.len = data ? dev->nDataBytesPerChunk : sizeof(pt); -+ ops.ooblen = packed_tags_size; -+ ops.len = data ? dev->data_bytes_per_chunk : packed_tags_size; - ops.ooboffs = 0; - ops.datbuf = data; -- ops.oobbuf = dev->spareBuffer; -+ ops.oobbuf = yaffs_dev_to_lc(dev)->spareBuffer; - retval = mtd->read_oob(mtd, addr, &ops); - } - #else -- if (!dev->inbandTags && data && tags) { -+ if (!dev->param.inband_tags && data && tags) { - -- retval = mtd->read_ecc(mtd, addr, dev->nDataBytesPerChunk, -+ retval = mtd->read_ecc(mtd, addr, dev->data_bytes_per_chunk, - &dummy, data, dev->spareBuffer, - NULL); - } else { - if (data) - retval = -- mtd->read(mtd, addr, dev->nDataBytesPerChunk, &dummy, -+ mtd->read(mtd, addr, dev->data_bytes_per_chunk, &dummy, - data); -- if (!dev->inbandTags && tags) -+ if (!dev->param.inband_tags && tags) - retval = - mtd->read_oob(mtd, addr, mtd->oobsize, &dummy, - dev->spareBuffer); -@@ -158,41 +163,47 @@ int nandmtd2_ReadChunkWithTagsFromNAND(y - #endif - - -- if (dev->inbandTags) { -+ if (dev->param.inband_tags) { - if (tags) { - yaffs_PackedTags2TagsPart *pt2tp; -- pt2tp = (yaffs_PackedTags2TagsPart *)&data[dev->nDataBytesPerChunk]; -- yaffs_UnpackTags2TagsPart(tags, pt2tp); -+ pt2tp = (yaffs_PackedTags2TagsPart *)&data[dev->data_bytes_per_chunk]; -+ yaffs_unpack_tags2tags_part(tags, pt2tp); - } - } else { - if (tags) { -- memcpy(&pt, dev->spareBuffer, sizeof(pt)); -- yaffs_UnpackTags2(tags, &pt); -+ memcpy(packed_tags_ptr, yaffs_dev_to_lc(dev)->spareBuffer, packed_tags_size); -+ yaffs_unpack_tags2(tags, &pt, !dev->param.no_tags_ecc); - } - } - - if (localData) -- yaffs_ReleaseTempBuffer(dev, data, __LINE__); -+ yaffs_release_temp_buffer(dev, data, __LINE__); - -- if (tags && retval == -EBADMSG && tags->eccResult == YAFFS_ECC_RESULT_NO_ERROR) -- tags->eccResult = YAFFS_ECC_RESULT_UNFIXED; -+ if (tags && retval == -EBADMSG && tags->ecc_result == YAFFS_ECC_RESULT_NO_ERROR) { -+ tags->ecc_result = YAFFS_ECC_RESULT_UNFIXED; -+ dev->n_ecc_unfixed++; -+ } -+ if(tags && retval == -EUCLEAN && tags->ecc_result == YAFFS_ECC_RESULT_NO_ERROR) { -+ tags->ecc_result = YAFFS_ECC_RESULT_FIXED; -+ dev->n_ecc_fixed++; -+ } - if (retval == 0) - return YAFFS_OK; - else - return YAFFS_FAIL; - } - --int nandmtd2_MarkNANDBlockBad(struct yaffs_DeviceStruct *dev, int blockNo) -+int nandmtd2_MarkNANDBlockBad(struct yaffs_dev_s *dev, int block_no) - { -- struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice); -+ struct mtd_info *mtd = yaffs_dev_to_mtd(dev); - int retval; - T(YAFFS_TRACE_MTD, -- (TSTR("nandmtd2_MarkNANDBlockBad %d" TENDSTR), blockNo)); -+ (TSTR("nandmtd2_MarkNANDBlockBad %d" TENDSTR), block_no)); - - retval = - mtd->block_markbad(mtd, -- blockNo * dev->nChunksPerBlock * -- dev->totalBytesPerChunk); -+ block_no * dev->param.chunks_per_block * -+ dev->param.total_bytes_per_chunk); - - if (retval == 0) - return YAFFS_OK; -@@ -201,41 +212,41 @@ int nandmtd2_MarkNANDBlockBad(struct yaf - - } - --int nandmtd2_QueryNANDBlock(struct yaffs_DeviceStruct *dev, int blockNo, -- yaffs_BlockState *state, __u32 *sequenceNumber) -+int nandmtd2_QueryNANDBlock(struct yaffs_dev_s *dev, int block_no, -+ yaffs_block_state_t *state, __u32 *seq_number) - { -- struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice); -+ struct mtd_info *mtd = yaffs_dev_to_mtd(dev); - int retval; - - T(YAFFS_TRACE_MTD, -- (TSTR("nandmtd2_QueryNANDBlock %d" TENDSTR), blockNo)); -+ (TSTR("nandmtd2_QueryNANDBlock %d" TENDSTR), block_no)); - retval = - mtd->block_isbad(mtd, -- blockNo * dev->nChunksPerBlock * -- dev->totalBytesPerChunk); -+ block_no * dev->param.chunks_per_block * -+ dev->param.total_bytes_per_chunk); - - if (retval) { - T(YAFFS_TRACE_MTD, (TSTR("block is bad" TENDSTR))); - - *state = YAFFS_BLOCK_STATE_DEAD; -- *sequenceNumber = 0; -+ *seq_number = 0; - } else { -- yaffs_ExtendedTags t; -+ yaffs_ext_tags t; - nandmtd2_ReadChunkWithTagsFromNAND(dev, -- blockNo * -- dev->nChunksPerBlock, NULL, -+ block_no * -+ dev->param.chunks_per_block, NULL, - &t); - -- if (t.chunkUsed) { -- *sequenceNumber = t.sequenceNumber; -+ if (t.chunk_used) { -+ *seq_number = t.seq_number; - *state = YAFFS_BLOCK_STATE_NEEDS_SCANNING; - } else { -- *sequenceNumber = 0; -+ *seq_number = 0; - *state = YAFFS_BLOCK_STATE_EMPTY; - } - } - T(YAFFS_TRACE_MTD, -- (TSTR("block is bad seq %d state %d" TENDSTR), *sequenceNumber, -+ (TSTR("block is bad seq %d state %d" TENDSTR), *seq_number, - *state)); - - if (retval == 0) ---- a/fs/yaffs2/yaffs_mtdif2.h -+++ b/fs/yaffs2/yaffs_mtdif2.h -@@ -1,7 +1,7 @@ - /* - * YAFFS: Yet another Flash File System . A NAND-flash specific file system. - * -- * Copyright (C) 2002-2007 Aleph One Ltd. -+ * Copyright (C) 2002-2010 Aleph One Ltd. - * for Toby Churchill Ltd and Brightstar Engineering - * - * Created by Charles Manning <charles@aleph1.co.uk> -@@ -17,13 +17,13 @@ - #define __YAFFS_MTDIF2_H__ - - #include "yaffs_guts.h" --int nandmtd2_WriteChunkWithTagsToNAND(yaffs_Device *dev, int chunkInNAND, -+int nandmtd2_WriteChunkWithTagsToNAND(yaffs_dev_t *dev, int nand_chunk, - const __u8 *data, -- const yaffs_ExtendedTags *tags); --int nandmtd2_ReadChunkWithTagsFromNAND(yaffs_Device *dev, int chunkInNAND, -- __u8 *data, yaffs_ExtendedTags *tags); --int nandmtd2_MarkNANDBlockBad(struct yaffs_DeviceStruct *dev, int blockNo); --int nandmtd2_QueryNANDBlock(struct yaffs_DeviceStruct *dev, int blockNo, -- yaffs_BlockState *state, __u32 *sequenceNumber); -+ const yaffs_ext_tags *tags); -+int nandmtd2_ReadChunkWithTagsFromNAND(yaffs_dev_t *dev, int nand_chunk, -+ __u8 *data, yaffs_ext_tags *tags); -+int nandmtd2_MarkNANDBlockBad(struct yaffs_dev_s *dev, int block_no); -+int nandmtd2_QueryNANDBlock(struct yaffs_dev_s *dev, int block_no, -+ yaffs_block_state_t *state, __u32 *seq_number); - - #endif ---- a/fs/yaffs2/yaffs_mtdif.c -+++ b/fs/yaffs2/yaffs_mtdif.c -@@ -1,7 +1,7 @@ - /* - * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. - * -- * Copyright (C) 2002-2007 Aleph One Ltd. -+ * Copyright (C) 2002-2010 Aleph One Ltd. - * for Toby Churchill Ltd and Brightstar Engineering - * - * Created by Charles Manning <charles@aleph1.co.uk> -@@ -11,9 +11,6 @@ - * published by the Free Software Foundation. - */ - --const char *yaffs_mtdif_c_version = -- "$Id: yaffs_mtdif.c,v 1.22 2009-03-06 17:20:51 wookey Exp $"; -- - #include "yportenv.h" - - -@@ -24,208 +21,26 @@ const char *yaffs_mtdif_c_version = - #include "linux/time.h" - #include "linux/mtd/nand.h" - --#if (MTD_VERSION_CODE < MTD_VERSION(2, 6, 18)) --static struct nand_oobinfo yaffs_oobinfo = { -- .useecc = 1, -- .eccbytes = 6, -- .eccpos = {8, 9, 10, 13, 14, 15} --}; -- --static struct nand_oobinfo yaffs_noeccinfo = { -- .useecc = 0, --}; --#endif -- --#if (MTD_VERSION_CODE > MTD_VERSION(2, 6, 17)) --static inline void translate_spare2oob(const yaffs_Spare *spare, __u8 *oob) --{ -- oob[0] = spare->tagByte0; -- oob[1] = spare->tagByte1; -- oob[2] = spare->tagByte2; -- oob[3] = spare->tagByte3; -- oob[4] = spare->tagByte4; -- oob[5] = spare->tagByte5 & 0x3f; -- oob[5] |= spare->blockStatus == 'Y' ? 0 : 0x80; -- oob[5] |= spare->pageStatus == 0 ? 0 : 0x40; -- oob[6] = spare->tagByte6; -- oob[7] = spare->tagByte7; --} -- --static inline void translate_oob2spare(yaffs_Spare *spare, __u8 *oob) --{ -- struct yaffs_NANDSpare *nspare = (struct yaffs_NANDSpare *)spare; -- spare->tagByte0 = oob[0]; -- spare->tagByte1 = oob[1]; -- spare->tagByte2 = oob[2]; -- spare->tagByte3 = oob[3]; -- spare->tagByte4 = oob[4]; -- spare->tagByte5 = oob[5] == 0xff ? 0xff : oob[5] & 0x3f; -- spare->blockStatus = oob[5] & 0x80 ? 0xff : 'Y'; -- spare->pageStatus = oob[5] & 0x40 ? 0xff : 0; -- spare->ecc1[0] = spare->ecc1[1] = spare->ecc1[2] = 0xff; -- spare->tagByte6 = oob[6]; -- spare->tagByte7 = oob[7]; -- spare->ecc2[0] = spare->ecc2[1] = spare->ecc2[2] = 0xff; -- -- nspare->eccres1 = nspare->eccres2 = 0; /* FIXME */ --} --#endif -- --int nandmtd_WriteChunkToNAND(yaffs_Device *dev, int chunkInNAND, -- const __u8 *data, const yaffs_Spare *spare) --{ -- struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice); --#if (MTD_VERSION_CODE > MTD_VERSION(2, 6, 17)) -- struct mtd_oob_ops ops; --#endif -- size_t dummy; -- int retval = 0; -- -- loff_t addr = ((loff_t) chunkInNAND) * dev->nDataBytesPerChunk; --#if (MTD_VERSION_CODE > MTD_VERSION(2, 6, 17)) -- __u8 spareAsBytes[8]; /* OOB */ -- -- if (data && !spare) -- retval = mtd->write(mtd, addr, dev->nDataBytesPerChunk, -- &dummy, data); -- else if (spare) { -- if (dev->useNANDECC) { -- translate_spare2oob(spare, spareAsBytes); -- ops.mode = MTD_OOB_AUTO; -- ops.ooblen = 8; /* temp hack */ -- } else { -- ops.mode = MTD_OOB_RAW; -- ops.ooblen = YAFFS_BYTES_PER_SPARE; -- } -- ops.len = data ? dev->nDataBytesPerChunk : ops.ooblen; -- ops.datbuf = (u8 *)data; -- ops.ooboffs = 0; -- ops.oobbuf = spareAsBytes; -- retval = mtd->write_oob(mtd, addr, &ops); -- } --#else -- __u8 *spareAsBytes = (__u8 *) spare; -- -- if (data && spare) { -- if (dev->useNANDECC) -- retval = -- mtd->write_ecc(mtd, addr, dev->nDataBytesPerChunk, -- &dummy, data, spareAsBytes, -- &yaffs_oobinfo); -- else -- retval = -- mtd->write_ecc(mtd, addr, dev->nDataBytesPerChunk, -- &dummy, data, spareAsBytes, -- &yaffs_noeccinfo); -- } else { -- if (data) -- retval = -- mtd->write(mtd, addr, dev->nDataBytesPerChunk, &dummy, -- data); -- if (spare) -- retval = -- mtd->write_oob(mtd, addr, YAFFS_BYTES_PER_SPARE, -- &dummy, spareAsBytes); -- } --#endif -- -- if (retval == 0) -- return YAFFS_OK; -- else -- return YAFFS_FAIL; --} -- --int nandmtd_ReadChunkFromNAND(yaffs_Device *dev, int chunkInNAND, __u8 *data, -- yaffs_Spare *spare) --{ -- struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice); --#if (MTD_VERSION_CODE > MTD_VERSION(2, 6, 17)) -- struct mtd_oob_ops ops; --#endif -- size_t dummy; -- int retval = 0; -+#include "yaffs_linux.h" - -- loff_t addr = ((loff_t) chunkInNAND) * dev->nDataBytesPerChunk; --#if (MTD_VERSION_CODE > MTD_VERSION(2, 6, 17)) -- __u8 spareAsBytes[8]; /* OOB */ -- -- if (data && !spare) -- retval = mtd->read(mtd, addr, dev->nDataBytesPerChunk, -- &dummy, data); -- else if (spare) { -- if (dev->useNANDECC) { -- ops.mode = MTD_OOB_AUTO; -- ops.ooblen = 8; /* temp hack */ -- } else { -- ops.mode = MTD_OOB_RAW; -- ops.ooblen = YAFFS_BYTES_PER_SPARE; -- } -- ops.len = data ? dev->nDataBytesPerChunk : ops.ooblen; -- ops.datbuf = data; -- ops.ooboffs = 0; -- ops.oobbuf = spareAsBytes; -- retval = mtd->read_oob(mtd, addr, &ops); -- if (dev->useNANDECC) -- translate_oob2spare(spare, spareAsBytes); -- } --#else -- __u8 *spareAsBytes = (__u8 *) spare; -- -- if (data && spare) { -- if (dev->useNANDECC) { -- /* Careful, this call adds 2 ints */ -- /* to the end of the spare data. Calling function */ -- /* should allocate enough memory for spare, */ -- /* i.e. [YAFFS_BYTES_PER_SPARE+2*sizeof(int)]. */ -- retval = -- mtd->read_ecc(mtd, addr, dev->nDataBytesPerChunk, -- &dummy, data, spareAsBytes, -- &yaffs_oobinfo); -- } else { -- retval = -- mtd->read_ecc(mtd, addr, dev->nDataBytesPerChunk, -- &dummy, data, spareAsBytes, -- &yaffs_noeccinfo); -- } -- } else { -- if (data) -- retval = -- mtd->read(mtd, addr, dev->nDataBytesPerChunk, &dummy, -- data); -- if (spare) -- retval = -- mtd->read_oob(mtd, addr, YAFFS_BYTES_PER_SPARE, -- &dummy, spareAsBytes); -- } --#endif -- -- if (retval == 0) -- return YAFFS_OK; -- else -- return YAFFS_FAIL; --} -- --int nandmtd_EraseBlockInNAND(yaffs_Device *dev, int blockNumber) -+int nandmtd_EraseBlockInNAND(yaffs_dev_t *dev, int blockNumber) - { -- struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice); -+ struct mtd_info *mtd = yaffs_dev_to_mtd(dev); - __u32 addr = -- ((loff_t) blockNumber) * dev->nDataBytesPerChunk -- * dev->nChunksPerBlock; -+ ((loff_t) blockNumber) * dev->param.total_bytes_per_chunk -+ * dev->param.chunks_per_block; - struct erase_info ei; -+ - int retval = 0; - - ei.mtd = mtd; - ei.addr = addr; -- ei.len = dev->nDataBytesPerChunk * dev->nChunksPerBlock; -+ ei.len = dev->param.total_bytes_per_chunk * dev->param.chunks_per_block; - ei.time = 1000; - ei.retries = 2; - ei.callback = NULL; - ei.priv = (u_long) dev; - -- /* Todo finish off the ei if required */ -- -- sema_init(&dev->sem, 0); -- - retval = mtd->erase(mtd, &ei); - - if (retval == 0) -@@ -234,7 +49,7 @@ int nandmtd_EraseBlockInNAND(yaffs_Devic - return YAFFS_FAIL; - } - --int nandmtd_InitialiseNAND(yaffs_Device *dev) -+int nandmtd_InitialiseNAND(yaffs_dev_t *dev) - { - return YAFFS_OK; - } ---- a/fs/yaffs2/yaffs_mtdif.h -+++ b/fs/yaffs2/yaffs_mtdif.h -@@ -1,7 +1,7 @@ - /* - * YAFFS: Yet another Flash File System . A NAND-flash specific file system. - * -- * Copyright (C) 2002-2007 Aleph One Ltd. -+ * Copyright (C) 2002-2010 Aleph One Ltd. - * for Toby Churchill Ltd and Brightstar Engineering - * - * Created by Charles Manning <charles@aleph1.co.uk> -@@ -22,11 +22,6 @@ - extern struct nand_oobinfo yaffs_oobinfo; - extern struct nand_oobinfo yaffs_noeccinfo; - #endif -- --int nandmtd_WriteChunkToNAND(yaffs_Device *dev, int chunkInNAND, -- const __u8 *data, const yaffs_Spare *spare); --int nandmtd_ReadChunkFromNAND(yaffs_Device *dev, int chunkInNAND, __u8 *data, -- yaffs_Spare *spare); --int nandmtd_EraseBlockInNAND(yaffs_Device *dev, int blockNumber); --int nandmtd_InitialiseNAND(yaffs_Device *dev); -+int nandmtd_EraseBlockInNAND(yaffs_dev_t *dev, int blockNumber); -+int nandmtd_InitialiseNAND(yaffs_dev_t *dev); - #endif ---- /dev/null -+++ b/fs/yaffs2/yaffs_nameval.c -@@ -0,0 +1,197 @@ -+/* -+ * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. -+ * -+ * Copyright (C) 2002-2010 Aleph One Ltd. -+ * for Toby Churchill Ltd and Brightstar Engineering -+ * -+ * Created by Charles Manning <charles@aleph1.co.uk> -+ * -+ * This program is free software; you can redistribute it and/or modify -+ * it under the terms of the GNU General Public License version 2 as -+ * published by the Free Software Foundation. -+ */ -+ -+/* -+ * This simple implementation of a name-value store assumes a small number of values and fits -+ * into a small finite buffer. -+ * -+ * Each attribute is stored as a record: -+ * sizeof(int) bytes record size. -+ * strnlen+1 bytes name null terminated. -+ * nbytes value. -+ * ---------- -+ * total size stored in record size -+ * -+ * This code has not been tested with unicode yet. -+ */ -+ -+ -+#include "yaffs_nameval.h" -+ -+#include "yportenv.h" -+ -+static int nval_find(const char *xb, int xb_size, const YCHAR *name, -+ int *exist_size) -+{ -+ int pos=0; -+ int size; -+ -+ memcpy(&size,xb,sizeof(int)); -+ while(size > 0 && (size < xb_size) && (pos + size < xb_size)){ -+ if(yaffs_strncmp((YCHAR *)(xb+pos+sizeof(int)),name,size) == 0){ -+ if(exist_size) -+ *exist_size = size; -+ return pos; -+ } -+ pos += size; -+ if(pos < xb_size -sizeof(int)) -+ memcpy(&size,xb + pos,sizeof(int)); -+ else -+ size = 0; -+ } -+ if(exist_size) -+ *exist_size = 0; -+ return -1; -+} -+ -+static int nval_used(const char *xb, int xb_size) -+{ -+ int pos=0; -+ int size; -+ -+ memcpy(&size,xb + pos,sizeof(int)); -+ while(size > 0 && (size < xb_size) && (pos + size < xb_size)){ -+ pos += size; -+ if(pos < xb_size -sizeof(int)) -+ memcpy(&size,xb + pos,sizeof(int)); -+ else -+ size = 0; -+ } -+ return pos; -+} -+ -+int nval_del(char *xb, int xb_size, const YCHAR *name) -+{ -+ int pos = nval_find(xb, xb_size, name, NULL); -+ int size; -+ -+ if(pos >= 0 && pos < xb_size){ -+ /* Find size, shift rest over this record, then zero out the rest of buffer */ -+ memcpy(&size,xb+pos,sizeof(int)); -+ memcpy(xb + pos, xb + pos + size, xb_size - (pos + size)); -+ memset(xb + (xb_size - size),0,size); -+ return 0; -+ } else -+ return -ENODATA; -+} -+ -+int nval_set(char *xb, int xb_size, const YCHAR *name, const char *buf, int bsize, int flags) -+{ -+ int pos; -+ int namelen = yaffs_strnlen(name,xb_size); -+ int reclen; -+ int size_exist = 0; -+ int space; -+ int start; -+ -+ pos = nval_find(xb,xb_size,name, &size_exist); -+ -+ if(flags & XATTR_CREATE && pos >= 0) -+ return -EEXIST; -+ if(flags & XATTR_REPLACE && pos < 0) -+ return -ENODATA; -+ -+ start = nval_used(xb,xb_size); -+ space = xb_size - start + size_exist; -+ -+ reclen = (sizeof(int) + namelen + 1 + bsize); -+ -+ if(reclen > space) -+ return -ENOSPC; -+ -+ if(pos >= 0){ -+ nval_del(xb,xb_size,name); -+ start = nval_used(xb, xb_size); -+ } -+ -+ pos = start; -+ -+ memcpy(xb + pos,&reclen,sizeof(int)); -+ pos +=sizeof(int); -+ yaffs_strncpy((YCHAR *)(xb + pos), name, reclen); -+ pos+= (namelen+1); -+ memcpy(xb + pos,buf,bsize); -+ return 0; -+} -+ -+int nval_get(const char *xb, int xb_size, const YCHAR *name, char *buf, int bsize) -+{ -+ int pos = nval_find(xb,xb_size,name,NULL); -+ int size; -+ -+ if(pos >= 0 && pos< xb_size){ -+ -+ memcpy(&size,xb +pos,sizeof(int)); -+ pos+=sizeof(int); /* advance past record length */ -+ size -= sizeof(int); -+ -+ /* Advance over name string */ -+ while(xb[pos] && size > 0 && pos < xb_size){ -+ pos++; -+ size--; -+ } -+ /*Advance over NUL */ -+ pos++; -+ size--; -+ -+ if(size <= bsize){ -+ memcpy(buf,xb + pos,size); -+ return size; -+ } -+ -+ } -+ if(pos >= 0) -+ return -ERANGE; -+ else -+ return -ENODATA; -+} -+ -+int nval_list(const char *xb, int xb_size, char *buf, int bsize) -+{ -+ int pos = 0; -+ int size; -+ int name_len; -+ int ncopied = 0; -+ int filled = 0; -+ -+ memcpy(&size,xb + pos,sizeof(int)); -+ while(size > sizeof(int) && size <= xb_size && (pos + size) < xb_size && !filled){ -+ pos+= sizeof(int); -+ size-=sizeof(int); -+ name_len = yaffs_strnlen((YCHAR *)(xb + pos), size); -+ if(ncopied + name_len + 1 < bsize){ -+ memcpy(buf,xb+pos,name_len * sizeof(YCHAR)); -+ buf+= name_len; -+ *buf = '\0'; -+ buf++; -+ if(sizeof(YCHAR) > 1){ -+ *buf = '\0'; -+ buf++; -+ } -+ ncopied += (name_len+1); -+ } else -+ filled = 1; -+ pos+=size; -+ if(pos < xb_size -sizeof(int)) -+ memcpy(&size,xb + pos,sizeof(int)); -+ else -+ size = 0; -+ } -+ return ncopied; -+} -+ -+ -+int nval_hasvalues(const char *xb, int xb_size) -+{ -+ return nval_used(xb, xb_size) > 0; -+} ---- /dev/null -+++ b/fs/yaffs2/yaffs_nameval.h -@@ -0,0 +1,25 @@ -+/* -+ * YAFFS: Yet another Flash File System . A NAND-flash specific file system. -+ * -+ * Copyright (C) 2002-2010 Aleph One Ltd. -+ * for Toby Churchill Ltd and Brightstar Engineering -+ * -+ * Created by Charles Manning <charles@aleph1.co.uk> -+ * -+ * This program is free software; you can redistribute it and/or modify -+ * it under the terms of the GNU Lesser General Public License version 2.1 as -+ * published by the Free Software Foundation. -+ * -+ * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL. -+ */ -+#ifndef __NAMEVAL_H__ -+#define __NAMEVAL_H__ -+ -+#include "yportenv.h" -+ -+int nval_del(char *xb, int xb_size, const YCHAR *name); -+int nval_set(char *xb, int xb_size, const YCHAR *name, const char *buf, int bsize, int flags); -+int nval_get(const char *xb, int xb_size, const YCHAR *name, char *buf, int bsize); -+int nval_list(const char *xb, int xb_size, char *buf, int bsize); -+int nval_hasvalues(const char *xb, int xb_size); -+#endif ---- a/fs/yaffs2/yaffs_nand.c -+++ b/fs/yaffs2/yaffs_nand.c -@@ -1,7 +1,7 @@ - /* - * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. - * -- * Copyright (C) 2002-2007 Aleph One Ltd. -+ * Copyright (C) 2002-2010 Aleph One Ltd. - * for Toby Churchill Ltd and Brightstar Engineering - * - * Created by Charles Manning <charles@aleph1.co.uk> -@@ -11,124 +11,129 @@ - * published by the Free Software Foundation. - */ - --const char *yaffs_nand_c_version = -- "$Id: yaffs_nand.c,v 1.10 2009-03-06 17:20:54 wookey Exp $"; -- - #include "yaffs_nand.h" - #include "yaffs_tagscompat.h" - #include "yaffs_tagsvalidity.h" - - #include "yaffs_getblockinfo.h" - --int yaffs_ReadChunkWithTagsFromNAND(yaffs_Device *dev, int chunkInNAND, -+int yaffs_rd_chunk_tags_nand(yaffs_dev_t *dev, int nand_chunk, - __u8 *buffer, -- yaffs_ExtendedTags *tags) -+ yaffs_ext_tags *tags) - { - int result; -- yaffs_ExtendedTags localTags; -+ yaffs_ext_tags localTags; -+ -+ int realignedChunkInNAND = nand_chunk - dev->chunk_offset; - -- int realignedChunkInNAND = chunkInNAND - dev->chunkOffset; -+ dev->n_page_reads++; - - /* If there are no tags provided, use local tags to get prioritised gc working */ - if (!tags) - tags = &localTags; - -- if (dev->readChunkWithTagsFromNAND) -- result = dev->readChunkWithTagsFromNAND(dev, realignedChunkInNAND, buffer, -+ if (dev->param.read_chunk_tags_fn) -+ result = dev->param.read_chunk_tags_fn(dev, realignedChunkInNAND, buffer, - tags); - else -- result = yaffs_TagsCompatabilityReadChunkWithTagsFromNAND(dev, -+ result = yaffs_tags_compat_rd(dev, - realignedChunkInNAND, - buffer, - tags); - if (tags && -- tags->eccResult > YAFFS_ECC_RESULT_NO_ERROR) { -+ tags->ecc_result > YAFFS_ECC_RESULT_NO_ERROR) { - -- yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, chunkInNAND/dev->nChunksPerBlock); -- yaffs_HandleChunkError(dev, bi); -+ yaffs_block_info_t *bi; -+ bi = yaffs_get_block_info(dev, nand_chunk/dev->param.chunks_per_block); -+ yaffs_handle_chunk_error(dev, bi); - } - - return result; - } - --int yaffs_WriteChunkWithTagsToNAND(yaffs_Device *dev, -- int chunkInNAND, -+int yaffs_wr_chunk_tags_nand(yaffs_dev_t *dev, -+ int nand_chunk, - const __u8 *buffer, -- yaffs_ExtendedTags *tags) -+ yaffs_ext_tags *tags) - { -- chunkInNAND -= dev->chunkOffset; -+ -+ dev->n_page_writes++; -+ -+ nand_chunk -= dev->chunk_offset; - - - if (tags) { -- tags->sequenceNumber = dev->sequenceNumber; -- tags->chunkUsed = 1; -- if (!yaffs_ValidateTags(tags)) { -+ tags->seq_number = dev->seq_number; -+ tags->chunk_used = 1; -+ if (!yaffs_validate_tags(tags)) { - T(YAFFS_TRACE_ERROR, - (TSTR("Writing uninitialised tags" TENDSTR))); - YBUG(); - } - T(YAFFS_TRACE_WRITE, -- (TSTR("Writing chunk %d tags %d %d" TENDSTR), chunkInNAND, -- tags->objectId, tags->chunkId)); -+ (TSTR("Writing chunk %d tags %d %d" TENDSTR), nand_chunk, -+ tags->obj_id, tags->chunk_id)); - } else { - T(YAFFS_TRACE_ERROR, (TSTR("Writing with no tags" TENDSTR))); - YBUG(); - } - -- if (dev->writeChunkWithTagsToNAND) -- return dev->writeChunkWithTagsToNAND(dev, chunkInNAND, buffer, -+ if (dev->param.write_chunk_tags_fn) -+ return dev->param.write_chunk_tags_fn(dev, nand_chunk, buffer, - tags); - else -- return yaffs_TagsCompatabilityWriteChunkWithTagsToNAND(dev, -- chunkInNAND, -+ return yaffs_tags_compat_wr(dev, -+ nand_chunk, - buffer, - tags); - } - --int yaffs_MarkBlockBad(yaffs_Device *dev, int blockNo) -+int yaffs_mark_bad(yaffs_dev_t *dev, int block_no) - { -- blockNo -= dev->blockOffset; -+ block_no -= dev->block_offset; -+ - --; -- if (dev->markNANDBlockBad) -- return dev->markNANDBlockBad(dev, blockNo); -+ if (dev->param.bad_block_fn) -+ return dev->param.bad_block_fn(dev, block_no); - else -- return yaffs_TagsCompatabilityMarkNANDBlockBad(dev, blockNo); -+ return yaffs_tags_compat_mark_bad(dev, block_no); - } - --int yaffs_QueryInitialBlockState(yaffs_Device *dev, -- int blockNo, -- yaffs_BlockState *state, -- __u32 *sequenceNumber) -+int yaffs_query_init_block_state(yaffs_dev_t *dev, -+ int block_no, -+ yaffs_block_state_t *state, -+ __u32 *seq_number) - { -- blockNo -= dev->blockOffset; -+ block_no -= dev->block_offset; - -- if (dev->queryNANDBlock) -- return dev->queryNANDBlock(dev, blockNo, state, sequenceNumber); -+ if (dev->param.query_block_fn) -+ return dev->param.query_block_fn(dev, block_no, state, seq_number); - else -- return yaffs_TagsCompatabilityQueryNANDBlock(dev, blockNo, -+ return yaffs_tags_compat_query_block(dev, block_no, - state, -- sequenceNumber); -+ seq_number); - } - - --int yaffs_EraseBlockInNAND(struct yaffs_DeviceStruct *dev, -- int blockInNAND) -+int yaffs_erase_block(struct yaffs_dev_s *dev, -+ int flash_block) - { - int result; - -- blockInNAND -= dev->blockOffset; -+ flash_block -= dev->block_offset; - -+ dev->n_erasures++; - -- dev->nBlockErasures++; -- result = dev->eraseBlockInNAND(dev, blockInNAND); -+ result = dev->param.erase_fn(dev, flash_block); - - return result; - } - --int yaffs_InitialiseNAND(struct yaffs_DeviceStruct *dev) -+int yaffs_init_nand(struct yaffs_dev_s *dev) - { -- return dev->initialiseNAND(dev); -+ if(dev->param.initialise_flash_fn) -+ return dev->param.initialise_flash_fn(dev); -+ return YAFFS_OK; - } - - ---- a/fs/yaffs2/yaffs_nandemul2k.h -+++ b/fs/yaffs2/yaffs_nandemul2k.h -@@ -1,7 +1,7 @@ - /* - * YAFFS: Yet another Flash File System . A NAND-flash specific file system. - * -- * Copyright (C) 2002-2007 Aleph One Ltd. -+ * Copyright (C) 2002-2010 Aleph One Ltd. - * for Toby Churchill Ltd and Brightstar Engineering - * - * Created by Charles Manning <charles@aleph1.co.uk> -@@ -20,18 +20,18 @@ - - #include "yaffs_guts.h" - --int nandemul2k_WriteChunkWithTagsToNAND(struct yaffs_DeviceStruct *dev, -- int chunkInNAND, const __u8 *data, -- const yaffs_ExtendedTags *tags); --int nandemul2k_ReadChunkWithTagsFromNAND(struct yaffs_DeviceStruct *dev, -- int chunkInNAND, __u8 *data, -- yaffs_ExtendedTags *tags); --int nandemul2k_MarkNANDBlockBad(struct yaffs_DeviceStruct *dev, int blockNo); --int nandemul2k_QueryNANDBlock(struct yaffs_DeviceStruct *dev, int blockNo, -- yaffs_BlockState *state, __u32 *sequenceNumber); --int nandemul2k_EraseBlockInNAND(struct yaffs_DeviceStruct *dev, -- int blockInNAND); --int nandemul2k_InitialiseNAND(struct yaffs_DeviceStruct *dev); -+int nandemul2k_WriteChunkWithTagsToNAND(struct yaffs_dev_s *dev, -+ int nand_chunk, const __u8 *data, -+ const yaffs_ext_tags *tags); -+int nandemul2k_ReadChunkWithTagsFromNAND(struct yaffs_dev_s *dev, -+ int nand_chunk, __u8 *data, -+ yaffs_ext_tags *tags); -+int nandemul2k_MarkNANDBlockBad(struct yaffs_dev_s *dev, int block_no); -+int nandemul2k_QueryNANDBlock(struct yaffs_dev_s *dev, int block_no, -+ yaffs_block_state_t *state, __u32 *seq_number); -+int nandemul2k_EraseBlockInNAND(struct yaffs_dev_s *dev, -+ int flash_block); -+int nandemul2k_InitialiseNAND(struct yaffs_dev_s *dev); - int nandemul2k_GetBytesPerChunk(void); - int nandemul2k_GetChunksPerBlock(void); - int nandemul2k_GetNumberOfBlocks(void); ---- a/fs/yaffs2/yaffs_nand.h -+++ b/fs/yaffs2/yaffs_nand.h -@@ -1,7 +1,7 @@ - /* - * YAFFS: Yet another Flash File System . A NAND-flash specific file system. - * -- * Copyright (C) 2002-2007 Aleph One Ltd. -+ * Copyright (C) 2002-2010 Aleph One Ltd. - * for Toby Churchill Ltd and Brightstar Engineering - * - * Created by Charles Manning <charles@aleph1.co.uk> -@@ -19,26 +19,26 @@ - - - --int yaffs_ReadChunkWithTagsFromNAND(yaffs_Device *dev, int chunkInNAND, -+int yaffs_rd_chunk_tags_nand(yaffs_dev_t *dev, int nand_chunk, - __u8 *buffer, -- yaffs_ExtendedTags *tags); -+ yaffs_ext_tags *tags); - --int yaffs_WriteChunkWithTagsToNAND(yaffs_Device *dev, -- int chunkInNAND, -+int yaffs_wr_chunk_tags_nand(yaffs_dev_t *dev, -+ int nand_chunk, - const __u8 *buffer, -- yaffs_ExtendedTags *tags); -+ yaffs_ext_tags *tags); - --int yaffs_MarkBlockBad(yaffs_Device *dev, int blockNo); -+int yaffs_mark_bad(yaffs_dev_t *dev, int block_no); - --int yaffs_QueryInitialBlockState(yaffs_Device *dev, -- int blockNo, -- yaffs_BlockState *state, -- unsigned *sequenceNumber); -+int yaffs_query_init_block_state(yaffs_dev_t *dev, -+ int block_no, -+ yaffs_block_state_t *state, -+ unsigned *seq_number); - --int yaffs_EraseBlockInNAND(struct yaffs_DeviceStruct *dev, -- int blockInNAND); -+int yaffs_erase_block(struct yaffs_dev_s *dev, -+ int flash_block); - --int yaffs_InitialiseNAND(struct yaffs_DeviceStruct *dev); -+int yaffs_init_nand(struct yaffs_dev_s *dev); - - #endif - ---- a/fs/yaffs2/yaffs_packedtags1.c -+++ b/fs/yaffs2/yaffs_packedtags1.c -@@ -1,7 +1,7 @@ - /* - * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. - * -- * Copyright (C) 2002-2007 Aleph One Ltd. -+ * Copyright (C) 2002-2010 Aleph One Ltd. - * for Toby Churchill Ltd and Brightstar Engineering - * - * Created by Charles Manning <charles@aleph1.co.uk> -@@ -14,37 +14,37 @@ - #include "yaffs_packedtags1.h" - #include "yportenv.h" - --void yaffs_PackTags1(yaffs_PackedTags1 *pt, const yaffs_ExtendedTags *t) -+void yaffs_PackTags1(yaffs_PackedTags1 *pt, const yaffs_ext_tags *t) - { -- pt->chunkId = t->chunkId; -- pt->serialNumber = t->serialNumber; -- pt->byteCount = t->byteCount; -- pt->objectId = t->objectId; -+ pt->chunk_id = t->chunk_id; -+ pt->serial_number = t->serial_number; -+ pt->n_bytes = t->n_bytes; -+ pt->obj_id = t->obj_id; - pt->ecc = 0; -- pt->deleted = (t->chunkDeleted) ? 0 : 1; -+ pt->deleted = (t->is_deleted) ? 0 : 1; - pt->unusedStuff = 0; - pt->shouldBeFF = 0xFFFFFFFF; - - } - --void yaffs_UnpackTags1(yaffs_ExtendedTags *t, const yaffs_PackedTags1 *pt) -+void yaffs_unpack_tags1(yaffs_ext_tags *t, const yaffs_PackedTags1 *pt) - { - static const __u8 allFF[] = - { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, - 0xff }; - - if (memcmp(allFF, pt, sizeof(yaffs_PackedTags1))) { -- t->blockBad = 0; -+ t->block_bad = 0; - if (pt->shouldBeFF != 0xFFFFFFFF) -- t->blockBad = 1; -- t->chunkUsed = 1; -- t->objectId = pt->objectId; -- t->chunkId = pt->chunkId; -- t->byteCount = pt->byteCount; -- t->eccResult = YAFFS_ECC_RESULT_NO_ERROR; -- t->chunkDeleted = (pt->deleted) ? 0 : 1; -- t->serialNumber = pt->serialNumber; -+ t->block_bad = 1; -+ t->chunk_used = 1; -+ t->obj_id = pt->obj_id; -+ t->chunk_id = pt->chunk_id; -+ t->n_bytes = pt->n_bytes; -+ t->ecc_result = YAFFS_ECC_RESULT_NO_ERROR; -+ t->is_deleted = (pt->deleted) ? 0 : 1; -+ t->serial_number = pt->serial_number; - } else { -- memset(t, 0, sizeof(yaffs_ExtendedTags)); -+ memset(t, 0, sizeof(yaffs_ext_tags)); - } - } ---- a/fs/yaffs2/yaffs_packedtags1.h -+++ b/fs/yaffs2/yaffs_packedtags1.h -@@ -1,7 +1,7 @@ - /* - * YAFFS: Yet another Flash File System . A NAND-flash specific file system. - * -- * Copyright (C) 2002-2007 Aleph One Ltd. -+ * Copyright (C) 2002-2010 Aleph One Ltd. - * for Toby Churchill Ltd and Brightstar Engineering - * - * Created by Charles Manning <charles@aleph1.co.uk> -@@ -21,10 +21,10 @@ - #include "yaffs_guts.h" - - typedef struct { -- unsigned chunkId:20; -- unsigned serialNumber:2; -- unsigned byteCount:10; -- unsigned objectId:18; -+ unsigned chunk_id:20; -+ unsigned serial_number:2; -+ unsigned n_bytes:10; -+ unsigned obj_id:18; - unsigned ecc:12; - unsigned deleted:1; - unsigned unusedStuff:1; -@@ -32,6 +32,6 @@ typedef struct { - - } yaffs_PackedTags1; - --void yaffs_PackTags1(yaffs_PackedTags1 *pt, const yaffs_ExtendedTags *t); --void yaffs_UnpackTags1(yaffs_ExtendedTags *t, const yaffs_PackedTags1 *pt); -+void yaffs_PackTags1(yaffs_PackedTags1 *pt, const yaffs_ext_tags *t); -+void yaffs_unpack_tags1(yaffs_ext_tags *t, const yaffs_PackedTags1 *pt); - #endif ---- a/fs/yaffs2/yaffs_packedtags2.c -+++ b/fs/yaffs2/yaffs_packedtags2.c -@@ -1,7 +1,7 @@ - /* - * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. - * -- * Copyright (C) 2002-2007 Aleph One Ltd. -+ * Copyright (C) 2002-2010 Aleph One Ltd. - * for Toby Churchill Ltd and Brightstar Engineering - * - * Created by Charles Manning <charles@aleph1.co.uk> -@@ -13,6 +13,7 @@ - - #include "yaffs_packedtags2.h" - #include "yportenv.h" -+#include "yaffs_trace.h" - #include "yaffs_tagsvalidity.h" - - /* This code packs a set of extended tags into a binary structure for -@@ -24,7 +25,7 @@ - * This is defined by having the EXTRA_HEADER_INFO_FLAG set. - */ - --/* Extra flags applied to chunkId */ -+/* Extra flags applied to chunk_id */ - - #define EXTRA_HEADER_INFO_FLAG 0x80000000 - #define EXTRA_SHRINK_FLAG 0x40000000 -@@ -42,53 +43,53 @@ static void yaffs_DumpPackedTags2TagsPar - { - T(YAFFS_TRACE_MTD, - (TSTR("packed tags obj %d chunk %d byte %d seq %d" TENDSTR), -- ptt->objectId, ptt->chunkId, ptt->byteCount, -- ptt->sequenceNumber)); -+ ptt->obj_id, ptt->chunk_id, ptt->n_bytes, -+ ptt->seq_number)); - } - static void yaffs_DumpPackedTags2(const yaffs_PackedTags2 *pt) - { - yaffs_DumpPackedTags2TagsPart(&pt->t); - } - --static void yaffs_DumpTags2(const yaffs_ExtendedTags *t) -+static void yaffs_DumpTags2(const yaffs_ext_tags *t) - { - T(YAFFS_TRACE_MTD, - (TSTR - ("ext.tags eccres %d blkbad %d chused %d obj %d chunk%d byte %d del %d ser %d seq %d" -- TENDSTR), t->eccResult, t->blockBad, t->chunkUsed, t->objectId, -- t->chunkId, t->byteCount, t->chunkDeleted, t->serialNumber, -- t->sequenceNumber)); -+ TENDSTR), t->ecc_result, t->block_bad, t->chunk_used, t->obj_id, -+ t->chunk_id, t->n_bytes, t->is_deleted, t->serial_number, -+ t->seq_number)); - - } - - void yaffs_PackTags2TagsPart(yaffs_PackedTags2TagsPart *ptt, -- const yaffs_ExtendedTags *t) -+ const yaffs_ext_tags *t) - { -- ptt->chunkId = t->chunkId; -- ptt->sequenceNumber = t->sequenceNumber; -- ptt->byteCount = t->byteCount; -- ptt->objectId = t->objectId; -+ ptt->chunk_id = t->chunk_id; -+ ptt->seq_number = t->seq_number; -+ ptt->n_bytes = t->n_bytes; -+ ptt->obj_id = t->obj_id; - -- if (t->chunkId == 0 && t->extraHeaderInfoAvailable) { -+ if (t->chunk_id == 0 && t->extra_available) { - /* Store the extra header info instead */ -- /* We save the parent object in the chunkId */ -- ptt->chunkId = EXTRA_HEADER_INFO_FLAG -- | t->extraParentObjectId; -- if (t->extraIsShrinkHeader) -- ptt->chunkId |= EXTRA_SHRINK_FLAG; -- if (t->extraShadows) -- ptt->chunkId |= EXTRA_SHADOWS_FLAG; -- -- ptt->objectId &= ~EXTRA_OBJECT_TYPE_MASK; -- ptt->objectId |= -- (t->extraObjectType << EXTRA_OBJECT_TYPE_SHIFT); -- -- if (t->extraObjectType == YAFFS_OBJECT_TYPE_HARDLINK) -- ptt->byteCount = t->extraEquivalentObjectId; -- else if (t->extraObjectType == YAFFS_OBJECT_TYPE_FILE) -- ptt->byteCount = t->extraFileLength; -+ /* We save the parent object in the chunk_id */ -+ ptt->chunk_id = EXTRA_HEADER_INFO_FLAG -+ | t->extra_parent_id; -+ if (t->extra_is_shrink) -+ ptt->chunk_id |= EXTRA_SHRINK_FLAG; -+ if (t->extra_shadows) -+ ptt->chunk_id |= EXTRA_SHADOWS_FLAG; -+ -+ ptt->obj_id &= ~EXTRA_OBJECT_TYPE_MASK; -+ ptt->obj_id |= -+ (t->extra_obj_type << EXTRA_OBJECT_TYPE_SHIFT); -+ -+ if (t->extra_obj_type == YAFFS_OBJECT_TYPE_HARDLINK) -+ ptt->n_bytes = t->extra_equiv_id; -+ else if (t->extra_obj_type == YAFFS_OBJECT_TYPE_FILE) -+ ptt->n_bytes = t->extra_length; - else -- ptt->byteCount = 0; -+ ptt->n_bytes = 0; - } - - yaffs_DumpPackedTags2TagsPart(ptt); -@@ -96,59 +97,56 @@ void yaffs_PackTags2TagsPart(yaffs_Packe - } - - --void yaffs_PackTags2(yaffs_PackedTags2 *pt, const yaffs_ExtendedTags *t) -+void yaffs_PackTags2(yaffs_PackedTags2 *pt, const yaffs_ext_tags *t, int tagsECC) - { - yaffs_PackTags2TagsPart(&pt->t, t); - --#ifndef YAFFS_IGNORE_TAGS_ECC -- { -- yaffs_ECCCalculateOther((unsigned char *)&pt->t, -+ if(tagsECC) -+ yaffs_ecc_calc_other((unsigned char *)&pt->t, - sizeof(yaffs_PackedTags2TagsPart), - &pt->ecc); -- } --#endif - } - - --void yaffs_UnpackTags2TagsPart(yaffs_ExtendedTags *t, -+void yaffs_unpack_tags2tags_part(yaffs_ext_tags *t, - yaffs_PackedTags2TagsPart *ptt) - { - -- memset(t, 0, sizeof(yaffs_ExtendedTags)); -+ memset(t, 0, sizeof(yaffs_ext_tags)); - -- yaffs_InitialiseTags(t); -+ yaffs_init_tags(t); - -- if (ptt->sequenceNumber != 0xFFFFFFFF) { -- t->blockBad = 0; -- t->chunkUsed = 1; -- t->objectId = ptt->objectId; -- t->chunkId = ptt->chunkId; -- t->byteCount = ptt->byteCount; -- t->chunkDeleted = 0; -- t->serialNumber = 0; -- t->sequenceNumber = ptt->sequenceNumber; -+ if (ptt->seq_number != 0xFFFFFFFF) { -+ t->block_bad = 0; -+ t->chunk_used = 1; -+ t->obj_id = ptt->obj_id; -+ t->chunk_id = ptt->chunk_id; -+ t->n_bytes = ptt->n_bytes; -+ t->is_deleted = 0; -+ t->serial_number = 0; -+ t->seq_number = ptt->seq_number; - - /* Do extra header info stuff */ - -- if (ptt->chunkId & EXTRA_HEADER_INFO_FLAG) { -- t->chunkId = 0; -- t->byteCount = 0; -- -- t->extraHeaderInfoAvailable = 1; -- t->extraParentObjectId = -- ptt->chunkId & (~(ALL_EXTRA_FLAGS)); -- t->extraIsShrinkHeader = -- (ptt->chunkId & EXTRA_SHRINK_FLAG) ? 1 : 0; -- t->extraShadows = -- (ptt->chunkId & EXTRA_SHADOWS_FLAG) ? 1 : 0; -- t->extraObjectType = -- ptt->objectId >> EXTRA_OBJECT_TYPE_SHIFT; -- t->objectId &= ~EXTRA_OBJECT_TYPE_MASK; -+ if (ptt->chunk_id & EXTRA_HEADER_INFO_FLAG) { -+ t->chunk_id = 0; -+ t->n_bytes = 0; -+ -+ t->extra_available = 1; -+ t->extra_parent_id = -+ ptt->chunk_id & (~(ALL_EXTRA_FLAGS)); -+ t->extra_is_shrink = -+ (ptt->chunk_id & EXTRA_SHRINK_FLAG) ? 1 : 0; -+ t->extra_shadows = -+ (ptt->chunk_id & EXTRA_SHADOWS_FLAG) ? 1 : 0; -+ t->extra_obj_type = -+ ptt->obj_id >> EXTRA_OBJECT_TYPE_SHIFT; -+ t->obj_id &= ~EXTRA_OBJECT_TYPE_MASK; - -- if (t->extraObjectType == YAFFS_OBJECT_TYPE_HARDLINK) -- t->extraEquivalentObjectId = ptt->byteCount; -+ if (t->extra_obj_type == YAFFS_OBJECT_TYPE_HARDLINK) -+ t->extra_equiv_id = ptt->n_bytes; - else -- t->extraFileLength = ptt->byteCount; -+ t->extra_length = ptt->n_bytes; - } - } - -@@ -158,49 +156,43 @@ void yaffs_UnpackTags2TagsPart(yaffs_Ext - } - - --void yaffs_UnpackTags2(yaffs_ExtendedTags *t, yaffs_PackedTags2 *pt) -+void yaffs_unpack_tags2(yaffs_ext_tags *t, yaffs_PackedTags2 *pt, int tagsECC) - { - -- yaffs_ECCResult eccResult = YAFFS_ECC_RESULT_NO_ERROR; -+ yaffs_ecc_result ecc_result = YAFFS_ECC_RESULT_NO_ERROR; - -- if (pt->t.sequenceNumber != 0xFFFFFFFF) { -- /* Page is in use */ --#ifndef YAFFS_IGNORE_TAGS_ECC -- { -- yaffs_ECCOther ecc; -- int result; -- yaffs_ECCCalculateOther((unsigned char *)&pt->t, -- sizeof -- (yaffs_PackedTags2TagsPart), -- &ecc); -- result = -- yaffs_ECCCorrectOther((unsigned char *)&pt->t, -- sizeof -- (yaffs_PackedTags2TagsPart), -- &pt->ecc, &ecc); -- switch (result) { -+ if (pt->t.seq_number != 0xFFFFFFFF && -+ tagsECC){ -+ /* Chunk is in use and we need to do ECC */ -+ -+ yaffs_ECCOther ecc; -+ int result; -+ yaffs_ecc_calc_other((unsigned char *)&pt->t, -+ sizeof(yaffs_PackedTags2TagsPart), -+ &ecc); -+ result = yaffs_ecc_correct_other((unsigned char *)&pt->t, -+ sizeof(yaffs_PackedTags2TagsPart), -+ &pt->ecc, &ecc); -+ switch (result) { - case 0: -- eccResult = YAFFS_ECC_RESULT_NO_ERROR; -+ ecc_result = YAFFS_ECC_RESULT_NO_ERROR; - break; - case 1: -- eccResult = YAFFS_ECC_RESULT_FIXED; -+ ecc_result = YAFFS_ECC_RESULT_FIXED; - break; - case -1: -- eccResult = YAFFS_ECC_RESULT_UNFIXED; -+ ecc_result = YAFFS_ECC_RESULT_UNFIXED; - break; - default: -- eccResult = YAFFS_ECC_RESULT_UNKNOWN; -- } -+ ecc_result = YAFFS_ECC_RESULT_UNKNOWN; - } --#endif - } - -- yaffs_UnpackTags2TagsPart(t, &pt->t); -+ yaffs_unpack_tags2tags_part(t, &pt->t); - -- t->eccResult = eccResult; -+ t->ecc_result = ecc_result; - - yaffs_DumpPackedTags2(pt); - yaffs_DumpTags2(t); -- - } - ---- a/fs/yaffs2/yaffs_packedtags2.h -+++ b/fs/yaffs2/yaffs_packedtags2.h -@@ -1,7 +1,7 @@ - /* - * YAFFS: Yet another Flash File System . A NAND-flash specific file system. - * -- * Copyright (C) 2002-2007 Aleph One Ltd. -+ * Copyright (C) 2002-2010 Aleph One Ltd. - * for Toby Churchill Ltd and Brightstar Engineering - * - * Created by Charles Manning <charles@aleph1.co.uk> -@@ -22,10 +22,10 @@ - #include "yaffs_ecc.h" - - typedef struct { -- unsigned sequenceNumber; -- unsigned objectId; -- unsigned chunkId; -- unsigned byteCount; -+ unsigned seq_number; -+ unsigned obj_id; -+ unsigned chunk_id; -+ unsigned n_bytes; - } yaffs_PackedTags2TagsPart; - - typedef struct { -@@ -34,10 +34,10 @@ typedef struct { - } yaffs_PackedTags2; - - /* Full packed tags with ECC, used for oob tags */ --void yaffs_PackTags2(yaffs_PackedTags2 *pt, const yaffs_ExtendedTags *t); --void yaffs_UnpackTags2(yaffs_ExtendedTags *t, yaffs_PackedTags2 *pt); -+void yaffs_PackTags2(yaffs_PackedTags2 *pt, const yaffs_ext_tags *t, int tagsECC); -+void yaffs_unpack_tags2(yaffs_ext_tags *t, yaffs_PackedTags2 *pt, int tagsECC); - - /* Only the tags part (no ECC for use with inband tags */ --void yaffs_PackTags2TagsPart(yaffs_PackedTags2TagsPart *pt, const yaffs_ExtendedTags *t); --void yaffs_UnpackTags2TagsPart(yaffs_ExtendedTags *t, yaffs_PackedTags2TagsPart *pt); -+void yaffs_PackTags2TagsPart(yaffs_PackedTags2TagsPart *pt, const yaffs_ext_tags *t); -+void yaffs_unpack_tags2tags_part(yaffs_ext_tags *t, yaffs_PackedTags2TagsPart *pt); - #endif ---- a/fs/yaffs2/yaffs_qsort.h -+++ b/fs/yaffs2/yaffs_qsort.h -@@ -1,7 +1,7 @@ - /* - * YAFFS: Yet another Flash File System . A NAND-flash specific file system. - * -- * Copyright (C) 2002-2007 Aleph One Ltd. -+ * Copyright (C) 2002-2010 Aleph One Ltd. - * for Toby Churchill Ltd and Brightstar Engineering - * - * Created by Charles Manning <charles@aleph1.co.uk> -@@ -17,7 +17,18 @@ - #ifndef __YAFFS_QSORT_H__ - #define __YAFFS_QSORT_H__ - -+#ifdef __KERNEL__ -+#include <linux/sort.h> -+ -+extern void yaffs_qsort(void *const base, size_t total_elems, size_t size, -+ int (*cmp)(const void *, const void *)){ -+ sort(base, total_elems, size, cmp, NULL); -+} -+ -+#else -+ - extern void yaffs_qsort(void *const base, size_t total_elems, size_t size, - int (*cmp)(const void *, const void *)); - - #endif -+#endif ---- a/fs/yaffs2/yaffs_tagscompat.c -+++ b/fs/yaffs2/yaffs_tagscompat.c -@@ -1,7 +1,7 @@ - /* - * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. - * -- * Copyright (C) 2002-2007 Aleph One Ltd. -+ * Copyright (C) 2002-2010 Aleph One Ltd. - * for Toby Churchill Ltd and Brightstar Engineering - * - * Created by Charles Manning <charles@aleph1.co.uk> -@@ -15,19 +15,20 @@ - #include "yaffs_tagscompat.h" - #include "yaffs_ecc.h" - #include "yaffs_getblockinfo.h" -+#include "yaffs_trace.h" - --static void yaffs_HandleReadDataError(yaffs_Device *dev, int chunkInNAND); -+static void yaffs_handle_rd_data_error(yaffs_dev_t *dev, int nand_chunk); - #ifdef NOTYET --static void yaffs_CheckWrittenBlock(yaffs_Device *dev, int chunkInNAND); --static void yaffs_HandleWriteChunkOk(yaffs_Device *dev, int chunkInNAND, -+static void yaffs_check_written_block(yaffs_dev_t *dev, int nand_chunk); -+static void yaffs_handle_chunk_wr_ok(yaffs_dev_t *dev, int nand_chunk, - const __u8 *data, -- const yaffs_Spare *spare); --static void yaffs_HandleUpdateChunk(yaffs_Device *dev, int chunkInNAND, -- const yaffs_Spare *spare); --static void yaffs_HandleWriteChunkError(yaffs_Device *dev, int chunkInNAND); -+ const yaffs_spare *spare); -+static void yaffs_handle_chunk_update(yaffs_dev_t *dev, int nand_chunk, -+ const yaffs_spare *spare); -+static void yaffs_handle_chunk_wr_error(yaffs_dev_t *dev, int nand_chunk); - #endif - --static const char yaffs_countBitsTable[256] = { -+static const char yaffs_count_bits_table[256] = { - 0, 1, 1, 2, 1, 2, 2, 3, 1, 2, 2, 3, 2, 3, 3, 4, - 1, 2, 2, 3, 2, 3, 3, 4, 2, 3, 3, 4, 3, 4, 4, 5, - 1, 2, 2, 3, 2, 3, 3, 4, 2, 3, 3, 4, 3, 4, 4, 5, -@@ -46,26 +47,26 @@ static const char yaffs_countBitsTable[2 - 4, 5, 5, 6, 5, 6, 6, 7, 5, 6, 6, 7, 6, 7, 7, 8 - }; - --int yaffs_CountBits(__u8 x) -+int yaffs_count_bits(__u8 x) - { - int retVal; -- retVal = yaffs_countBitsTable[x]; -+ retVal = yaffs_count_bits_table[x]; - return retVal; - } - - /********** Tags ECC calculations *********/ - --void yaffs_CalcECC(const __u8 *data, yaffs_Spare *spare) -+void yaffs_calc_ecc(const __u8 *data, yaffs_spare *spare) - { -- yaffs_ECCCalculate(data, spare->ecc1); -- yaffs_ECCCalculate(&data[256], spare->ecc2); -+ yaffs_ecc_cacl(data, spare->ecc1); -+ yaffs_ecc_cacl(&data[256], spare->ecc2); - } - --void yaffs_CalcTagsECC(yaffs_Tags *tags) -+void yaffs_calc_tags_ecc(yaffs_tags_t *tags) - { - /* Calculate an ecc */ - -- unsigned char *b = ((yaffs_TagsUnion *) tags)->asBytes; -+ unsigned char *b = ((yaffs_tags_union_t *) tags)->as_bytes; - unsigned i, j; - unsigned ecc = 0; - unsigned bit = 0; -@@ -84,24 +85,24 @@ void yaffs_CalcTagsECC(yaffs_Tags *tags) - - } - --int yaffs_CheckECCOnTags(yaffs_Tags *tags) -+int yaffs_check_tags_ecc(yaffs_tags_t *tags) - { - unsigned ecc = tags->ecc; - -- yaffs_CalcTagsECC(tags); -+ yaffs_calc_tags_ecc(tags); - - ecc ^= tags->ecc; - - if (ecc && ecc <= 64) { - /* TODO: Handle the failure better. Retire? */ -- unsigned char *b = ((yaffs_TagsUnion *) tags)->asBytes; -+ unsigned char *b = ((yaffs_tags_union_t *) tags)->as_bytes; - - ecc--; - - b[ecc / 8] ^= (1 << (ecc & 7)); - - /* Now recvalc the ecc */ -- yaffs_CalcTagsECC(tags); -+ yaffs_calc_tags_ecc(tags); - - return 1; /* recovered error */ - } else if (ecc) { -@@ -115,76 +116,73 @@ int yaffs_CheckECCOnTags(yaffs_Tags *tag - - /********** Tags **********/ - --static void yaffs_LoadTagsIntoSpare(yaffs_Spare *sparePtr, -- yaffs_Tags *tagsPtr) -+static void yaffs_load_tags_to_spare(yaffs_spare *sparePtr, -+ yaffs_tags_t *tagsPtr) - { -- yaffs_TagsUnion *tu = (yaffs_TagsUnion *) tagsPtr; -+ yaffs_tags_union_t *tu = (yaffs_tags_union_t *) tagsPtr; - -- yaffs_CalcTagsECC(tagsPtr); -+ yaffs_calc_tags_ecc(tagsPtr); - -- sparePtr->tagByte0 = tu->asBytes[0]; -- sparePtr->tagByte1 = tu->asBytes[1]; -- sparePtr->tagByte2 = tu->asBytes[2]; -- sparePtr->tagByte3 = tu->asBytes[3]; -- sparePtr->tagByte4 = tu->asBytes[4]; -- sparePtr->tagByte5 = tu->asBytes[5]; -- sparePtr->tagByte6 = tu->asBytes[6]; -- sparePtr->tagByte7 = tu->asBytes[7]; -+ sparePtr->tb0 = tu->as_bytes[0]; -+ sparePtr->tb1 = tu->as_bytes[1]; -+ sparePtr->tb2 = tu->as_bytes[2]; -+ sparePtr->tb3 = tu->as_bytes[3]; -+ sparePtr->tb4 = tu->as_bytes[4]; -+ sparePtr->tb5 = tu->as_bytes[5]; -+ sparePtr->tb6 = tu->as_bytes[6]; -+ sparePtr->tb7 = tu->as_bytes[7]; - } - --static void yaffs_GetTagsFromSpare(yaffs_Device *dev, yaffs_Spare *sparePtr, -- yaffs_Tags *tagsPtr) -+static void yaffs_get_tags_from_spare(yaffs_dev_t *dev, yaffs_spare *sparePtr, -+ yaffs_tags_t *tagsPtr) - { -- yaffs_TagsUnion *tu = (yaffs_TagsUnion *) tagsPtr; -+ yaffs_tags_union_t *tu = (yaffs_tags_union_t *) tagsPtr; - int result; - -- tu->asBytes[0] = sparePtr->tagByte0; -- tu->asBytes[1] = sparePtr->tagByte1; -- tu->asBytes[2] = sparePtr->tagByte2; -- tu->asBytes[3] = sparePtr->tagByte3; -- tu->asBytes[4] = sparePtr->tagByte4; -- tu->asBytes[5] = sparePtr->tagByte5; -- tu->asBytes[6] = sparePtr->tagByte6; -- tu->asBytes[7] = sparePtr->tagByte7; -+ tu->as_bytes[0] = sparePtr->tb0; -+ tu->as_bytes[1] = sparePtr->tb1; -+ tu->as_bytes[2] = sparePtr->tb2; -+ tu->as_bytes[3] = sparePtr->tb3; -+ tu->as_bytes[4] = sparePtr->tb4; -+ tu->as_bytes[5] = sparePtr->tb5; -+ tu->as_bytes[6] = sparePtr->tb6; -+ tu->as_bytes[7] = sparePtr->tb7; - -- result = yaffs_CheckECCOnTags(tagsPtr); -+ result = yaffs_check_tags_ecc(tagsPtr); - if (result > 0) -- dev->tagsEccFixed++; -+ dev->n_tags_ecc_fixed++; - else if (result < 0) -- dev->tagsEccUnfixed++; -+ dev->n_tags_ecc_unfixed++; - } - --static void yaffs_SpareInitialise(yaffs_Spare *spare) -+static void yaffs_spare_init(yaffs_spare *spare) - { -- memset(spare, 0xFF, sizeof(yaffs_Spare)); -+ memset(spare, 0xFF, sizeof(yaffs_spare)); - } - --static int yaffs_WriteChunkToNAND(struct yaffs_DeviceStruct *dev, -- int chunkInNAND, const __u8 *data, -- yaffs_Spare *spare) -+static int yaffs_wr_nand(struct yaffs_dev_s *dev, -+ int nand_chunk, const __u8 *data, -+ yaffs_spare *spare) - { -- if (chunkInNAND < dev->startBlock * dev->nChunksPerBlock) { -+ if (nand_chunk < dev->param.start_block * dev->param.chunks_per_block) { - T(YAFFS_TRACE_ERROR, - (TSTR("**>> yaffs chunk %d is not valid" TENDSTR), -- chunkInNAND)); -+ nand_chunk)); - return YAFFS_FAIL; - } - -- dev->nPageWrites++; -- return dev->writeChunkToNAND(dev, chunkInNAND, data, spare); -+ return dev->param.write_chunk_fn(dev, nand_chunk, data, spare); - } - --static int yaffs_ReadChunkFromNAND(struct yaffs_DeviceStruct *dev, -- int chunkInNAND, -+static int yaffs_rd_chunk_nand(struct yaffs_dev_s *dev, -+ int nand_chunk, - __u8 *data, -- yaffs_Spare *spare, -- yaffs_ECCResult *eccResult, -+ yaffs_spare *spare, -+ yaffs_ecc_result *ecc_result, - int doErrorCorrection) - { - int retVal; -- yaffs_Spare localSpare; -- -- dev->nPageReads++; -+ yaffs_spare localSpare; - - if (!spare && data) { - /* If we don't have a real spare, then we use a local one. */ -@@ -192,107 +190,107 @@ static int yaffs_ReadChunkFromNAND(struc - spare = &localSpare; - } - -- if (!dev->useNANDECC) { -- retVal = dev->readChunkFromNAND(dev, chunkInNAND, data, spare); -+ if (!dev->param.use_nand_ecc) { -+ retVal = dev->param.read_chunk_fn(dev, nand_chunk, data, spare); - if (data && doErrorCorrection) { - /* Do ECC correction */ - /* Todo handle any errors */ -- int eccResult1, eccResult2; -+ int ecc_result1, ecc_result2; - __u8 calcEcc[3]; - -- yaffs_ECCCalculate(data, calcEcc); -- eccResult1 = -- yaffs_ECCCorrect(data, spare->ecc1, calcEcc); -- yaffs_ECCCalculate(&data[256], calcEcc); -- eccResult2 = -- yaffs_ECCCorrect(&data[256], spare->ecc2, calcEcc); -+ yaffs_ecc_cacl(data, calcEcc); -+ ecc_result1 = -+ yaffs_ecc_correct(data, spare->ecc1, calcEcc); -+ yaffs_ecc_cacl(&data[256], calcEcc); -+ ecc_result2 = -+ yaffs_ecc_correct(&data[256], spare->ecc2, calcEcc); - -- if (eccResult1 > 0) { -+ if (ecc_result1 > 0) { - T(YAFFS_TRACE_ERROR, - (TSTR - ("**>>yaffs ecc error fix performed on chunk %d:0" -- TENDSTR), chunkInNAND)); -- dev->eccFixed++; -- } else if (eccResult1 < 0) { -+ TENDSTR), nand_chunk)); -+ dev->n_ecc_fixed++; -+ } else if (ecc_result1 < 0) { - T(YAFFS_TRACE_ERROR, - (TSTR - ("**>>yaffs ecc error unfixed on chunk %d:0" -- TENDSTR), chunkInNAND)); -- dev->eccUnfixed++; -+ TENDSTR), nand_chunk)); -+ dev->n_ecc_unfixed++; - } - -- if (eccResult2 > 0) { -+ if (ecc_result2 > 0) { - T(YAFFS_TRACE_ERROR, - (TSTR - ("**>>yaffs ecc error fix performed on chunk %d:1" -- TENDSTR), chunkInNAND)); -- dev->eccFixed++; -- } else if (eccResult2 < 0) { -+ TENDSTR), nand_chunk)); -+ dev->n_ecc_fixed++; -+ } else if (ecc_result2 < 0) { - T(YAFFS_TRACE_ERROR, - (TSTR - ("**>>yaffs ecc error unfixed on chunk %d:1" -- TENDSTR), chunkInNAND)); -- dev->eccUnfixed++; -+ TENDSTR), nand_chunk)); -+ dev->n_ecc_unfixed++; - } - -- if (eccResult1 || eccResult2) { -+ if (ecc_result1 || ecc_result2) { - /* We had a data problem on this page */ -- yaffs_HandleReadDataError(dev, chunkInNAND); -+ yaffs_handle_rd_data_error(dev, nand_chunk); - } - -- if (eccResult1 < 0 || eccResult2 < 0) -- *eccResult = YAFFS_ECC_RESULT_UNFIXED; -- else if (eccResult1 > 0 || eccResult2 > 0) -- *eccResult = YAFFS_ECC_RESULT_FIXED; -+ if (ecc_result1 < 0 || ecc_result2 < 0) -+ *ecc_result = YAFFS_ECC_RESULT_UNFIXED; -+ else if (ecc_result1 > 0 || ecc_result2 > 0) -+ *ecc_result = YAFFS_ECC_RESULT_FIXED; - else -- *eccResult = YAFFS_ECC_RESULT_NO_ERROR; -+ *ecc_result = YAFFS_ECC_RESULT_NO_ERROR; - } - } else { - /* Must allocate enough memory for spare+2*sizeof(int) */ - /* for ecc results from device. */ -- struct yaffs_NANDSpare nspare; -+ struct yaffs_nand_spare nspare; - - memset(&nspare, 0, sizeof(nspare)); - -- retVal = dev->readChunkFromNAND(dev, chunkInNAND, data, -- (yaffs_Spare *) &nspare); -- memcpy(spare, &nspare, sizeof(yaffs_Spare)); -+ retVal = dev->param.read_chunk_fn(dev, nand_chunk, data, -+ (yaffs_spare *) &nspare); -+ memcpy(spare, &nspare, sizeof(yaffs_spare)); - if (data && doErrorCorrection) { - if (nspare.eccres1 > 0) { - T(YAFFS_TRACE_ERROR, - (TSTR - ("**>>mtd ecc error fix performed on chunk %d:0" -- TENDSTR), chunkInNAND)); -+ TENDSTR), nand_chunk)); - } else if (nspare.eccres1 < 0) { - T(YAFFS_TRACE_ERROR, - (TSTR - ("**>>mtd ecc error unfixed on chunk %d:0" -- TENDSTR), chunkInNAND)); -+ TENDSTR), nand_chunk)); - } - - if (nspare.eccres2 > 0) { - T(YAFFS_TRACE_ERROR, - (TSTR - ("**>>mtd ecc error fix performed on chunk %d:1" -- TENDSTR), chunkInNAND)); -+ TENDSTR), nand_chunk)); - } else if (nspare.eccres2 < 0) { - T(YAFFS_TRACE_ERROR, - (TSTR - ("**>>mtd ecc error unfixed on chunk %d:1" -- TENDSTR), chunkInNAND)); -+ TENDSTR), nand_chunk)); - } - - if (nspare.eccres1 || nspare.eccres2) { - /* We had a data problem on this page */ -- yaffs_HandleReadDataError(dev, chunkInNAND); -+ yaffs_handle_rd_data_error(dev, nand_chunk); - } - - if (nspare.eccres1 < 0 || nspare.eccres2 < 0) -- *eccResult = YAFFS_ECC_RESULT_UNFIXED; -+ *ecc_result = YAFFS_ECC_RESULT_UNFIXED; - else if (nspare.eccres1 > 0 || nspare.eccres2 > 0) -- *eccResult = YAFFS_ECC_RESULT_FIXED; -+ *ecc_result = YAFFS_ECC_RESULT_FIXED; - else -- *eccResult = YAFFS_ECC_RESULT_NO_ERROR; -+ *ecc_result = YAFFS_ECC_RESULT_NO_ERROR; - - } - } -@@ -300,17 +298,17 @@ static int yaffs_ReadChunkFromNAND(struc - } - - #ifdef NOTYET --static int yaffs_CheckChunkErased(struct yaffs_DeviceStruct *dev, -- int chunkInNAND) -+static int yaffs_check_chunk_erased(struct yaffs_dev_s *dev, -+ int nand_chunk) - { - static int init; - static __u8 cmpbuf[YAFFS_BYTES_PER_CHUNK]; - static __u8 data[YAFFS_BYTES_PER_CHUNK]; - /* Might as well always allocate the larger size for */ -- /* dev->useNANDECC == true; */ -- static __u8 spare[sizeof(struct yaffs_NANDSpare)]; -+ /* dev->param.use_nand_ecc == true; */ -+ static __u8 spare[sizeof(struct yaffs_nand_spare)]; - -- dev->readChunkFromNAND(dev, chunkInNAND, data, (yaffs_Spare *) spare); -+ dev->param.read_chunk_fn(dev, nand_chunk, data, (yaffs_spare *) spare); - - if (!init) { - memset(cmpbuf, 0xff, YAFFS_BYTES_PER_CHUNK); -@@ -331,14 +329,14 @@ static int yaffs_CheckChunkErased(struct - * Functions for robustisizing - */ - --static void yaffs_HandleReadDataError(yaffs_Device *dev, int chunkInNAND) -+static void yaffs_handle_rd_data_error(yaffs_dev_t *dev, int nand_chunk) - { -- int blockInNAND = chunkInNAND / dev->nChunksPerBlock; -+ int flash_block = nand_chunk / dev->param.chunks_per_block; - - /* Mark the block for retirement */ -- yaffs_GetBlockInfo(dev, blockInNAND + dev->blockOffset)->needsRetiring = 1; -+ yaffs_get_block_info(dev, flash_block + dev->block_offset)->needs_retiring = 1; - T(YAFFS_TRACE_ERROR | YAFFS_TRACE_BAD_BLOCKS, -- (TSTR("**>>Block %d marked for retirement" TENDSTR), blockInNAND)); -+ (TSTR("**>>Block %d marked for retirement" TENDSTR), flash_block)); - - /* TODO: - * Just do a garbage collection on the affected block -@@ -348,44 +346,44 @@ static void yaffs_HandleReadDataError(ya - } - - #ifdef NOTYET --static void yaffs_CheckWrittenBlock(yaffs_Device *dev, int chunkInNAND) -+static void yaffs_check_written_block(yaffs_dev_t *dev, int nand_chunk) - { - } - --static void yaffs_HandleWriteChunkOk(yaffs_Device *dev, int chunkInNAND, -+static void yaffs_handle_chunk_wr_ok(yaffs_dev_t *dev, int nand_chunk, - const __u8 *data, -- const yaffs_Spare *spare) -+ const yaffs_spare *spare) - { - } - --static void yaffs_HandleUpdateChunk(yaffs_Device *dev, int chunkInNAND, -- const yaffs_Spare *spare) -+static void yaffs_handle_chunk_update(yaffs_dev_t *dev, int nand_chunk, -+ const yaffs_spare *spare) - { - } - --static void yaffs_HandleWriteChunkError(yaffs_Device *dev, int chunkInNAND) -+static void yaffs_handle_chunk_wr_error(yaffs_dev_t *dev, int nand_chunk) - { -- int blockInNAND = chunkInNAND / dev->nChunksPerBlock; -+ int flash_block = nand_chunk / dev->param.chunks_per_block; - - /* Mark the block for retirement */ -- yaffs_GetBlockInfo(dev, blockInNAND)->needsRetiring = 1; -+ yaffs_get_block_info(dev, flash_block)->needs_retiring = 1; - /* Delete the chunk */ -- yaffs_DeleteChunk(dev, chunkInNAND, 1, __LINE__); -+ yaffs_chunk_del(dev, nand_chunk, 1, __LINE__); - } - --static int yaffs_VerifyCompare(const __u8 *d0, const __u8 *d1, -- const yaffs_Spare *s0, const yaffs_Spare *s1) -+static int yaffs_verify_cmp(const __u8 *d0, const __u8 *d1, -+ const yaffs_spare *s0, const yaffs_spare *s1) - { - - if (memcmp(d0, d1, YAFFS_BYTES_PER_CHUNK) != 0 || -- s0->tagByte0 != s1->tagByte0 || -- s0->tagByte1 != s1->tagByte1 || -- s0->tagByte2 != s1->tagByte2 || -- s0->tagByte3 != s1->tagByte3 || -- s0->tagByte4 != s1->tagByte4 || -- s0->tagByte5 != s1->tagByte5 || -- s0->tagByte6 != s1->tagByte6 || -- s0->tagByte7 != s1->tagByte7 || -+ s0->tb0 != s1->tb0 || -+ s0->tb1 != s1->tb1 || -+ s0->tb2 != s1->tb2 || -+ s0->tb3 != s1->tb3 || -+ s0->tb4 != s1->tb4 || -+ s0->tb5 != s1->tb5 || -+ s0->tb6 != s1->tb6 || -+ s0->tb7 != s1->tb7 || - s0->ecc1[0] != s1->ecc1[0] || - s0->ecc1[1] != s1->ecc1[1] || - s0->ecc1[2] != s1->ecc1[2] || -@@ -398,53 +396,53 @@ static int yaffs_VerifyCompare(const __u - } - #endif /* NOTYET */ - --int yaffs_TagsCompatabilityWriteChunkWithTagsToNAND(yaffs_Device *dev, -- int chunkInNAND, -+int yaffs_tags_compat_wr(yaffs_dev_t *dev, -+ int nand_chunk, - const __u8 *data, -- const yaffs_ExtendedTags *eTags) -+ const yaffs_ext_tags *eTags) - { -- yaffs_Spare spare; -- yaffs_Tags tags; -+ yaffs_spare spare; -+ yaffs_tags_t tags; - -- yaffs_SpareInitialise(&spare); -+ yaffs_spare_init(&spare); - -- if (eTags->chunkDeleted) -- spare.pageStatus = 0; -+ if (eTags->is_deleted) -+ spare.page_status = 0; - else { -- tags.objectId = eTags->objectId; -- tags.chunkId = eTags->chunkId; -+ tags.obj_id = eTags->obj_id; -+ tags.chunk_id = eTags->chunk_id; - -- tags.byteCountLSB = eTags->byteCount & 0x3ff; -+ tags.n_bytes_lsb = eTags->n_bytes & 0x3ff; - -- if (dev->nDataBytesPerChunk >= 1024) -- tags.byteCountMSB = (eTags->byteCount >> 10) & 3; -+ if (dev->data_bytes_per_chunk >= 1024) -+ tags.n_bytes_msb = (eTags->n_bytes >> 10) & 3; - else -- tags.byteCountMSB = 3; -+ tags.n_bytes_msb = 3; - - -- tags.serialNumber = eTags->serialNumber; -+ tags.serial_number = eTags->serial_number; - -- if (!dev->useNANDECC && data) -- yaffs_CalcECC(data, &spare); -+ if (!dev->param.use_nand_ecc && data) -+ yaffs_calc_ecc(data, &spare); - -- yaffs_LoadTagsIntoSpare(&spare, &tags); -+ yaffs_load_tags_to_spare(&spare, &tags); - - } - -- return yaffs_WriteChunkToNAND(dev, chunkInNAND, data, &spare); -+ return yaffs_wr_nand(dev, nand_chunk, data, &spare); - } - --int yaffs_TagsCompatabilityReadChunkWithTagsFromNAND(yaffs_Device *dev, -- int chunkInNAND, -+int yaffs_tags_compat_rd(yaffs_dev_t *dev, -+ int nand_chunk, - __u8 *data, -- yaffs_ExtendedTags *eTags) -+ yaffs_ext_tags *eTags) - { - -- yaffs_Spare spare; -- yaffs_Tags tags; -- yaffs_ECCResult eccResult = YAFFS_ECC_RESULT_UNKNOWN; -+ yaffs_spare spare; -+ yaffs_tags_t tags; -+ yaffs_ecc_result ecc_result = YAFFS_ECC_RESULT_UNKNOWN; - -- static yaffs_Spare spareFF; -+ static yaffs_spare spareFF; - static int init; - - if (!init) { -@@ -452,33 +450,33 @@ int yaffs_TagsCompatabilityReadChunkWith - init = 1; - } - -- if (yaffs_ReadChunkFromNAND -- (dev, chunkInNAND, data, &spare, &eccResult, 1)) { -+ if (yaffs_rd_chunk_nand -+ (dev, nand_chunk, data, &spare, &ecc_result, 1)) { - /* eTags may be NULL */ - if (eTags) { - - int deleted = -- (yaffs_CountBits(spare.pageStatus) < 7) ? 1 : 0; -+ (yaffs_count_bits(spare.page_status) < 7) ? 1 : 0; - -- eTags->chunkDeleted = deleted; -- eTags->eccResult = eccResult; -- eTags->blockBad = 0; /* We're reading it */ -+ eTags->is_deleted = deleted; -+ eTags->ecc_result = ecc_result; -+ eTags->block_bad = 0; /* We're reading it */ - /* therefore it is not a bad block */ -- eTags->chunkUsed = -+ eTags->chunk_used = - (memcmp(&spareFF, &spare, sizeof(spareFF)) != - 0) ? 1 : 0; - -- if (eTags->chunkUsed) { -- yaffs_GetTagsFromSpare(dev, &spare, &tags); -+ if (eTags->chunk_used) { -+ yaffs_get_tags_from_spare(dev, &spare, &tags); - -- eTags->objectId = tags.objectId; -- eTags->chunkId = tags.chunkId; -- eTags->byteCount = tags.byteCountLSB; -+ eTags->obj_id = tags.obj_id; -+ eTags->chunk_id = tags.chunk_id; -+ eTags->n_bytes = tags.n_bytes_lsb; - -- if (dev->nDataBytesPerChunk >= 1024) -- eTags->byteCount |= (((unsigned) tags.byteCountMSB) << 10); -+ if (dev->data_bytes_per_chunk >= 1024) -+ eTags->n_bytes |= (((unsigned) tags.n_bytes_msb) << 10); - -- eTags->serialNumber = tags.serialNumber; -+ eTags->serial_number = tags.serial_number; - } - } - -@@ -488,49 +486,49 @@ int yaffs_TagsCompatabilityReadChunkWith - } - } - --int yaffs_TagsCompatabilityMarkNANDBlockBad(struct yaffs_DeviceStruct *dev, -- int blockInNAND) -+int yaffs_tags_compat_mark_bad(struct yaffs_dev_s *dev, -+ int flash_block) - { - -- yaffs_Spare spare; -+ yaffs_spare spare; - -- memset(&spare, 0xff, sizeof(yaffs_Spare)); -+ memset(&spare, 0xff, sizeof(yaffs_spare)); - -- spare.blockStatus = 'Y'; -+ spare.block_status = 'Y'; - -- yaffs_WriteChunkToNAND(dev, blockInNAND * dev->nChunksPerBlock, NULL, -+ yaffs_wr_nand(dev, flash_block * dev->param.chunks_per_block, NULL, - &spare); -- yaffs_WriteChunkToNAND(dev, blockInNAND * dev->nChunksPerBlock + 1, -+ yaffs_wr_nand(dev, flash_block * dev->param.chunks_per_block + 1, - NULL, &spare); - - return YAFFS_OK; - - } - --int yaffs_TagsCompatabilityQueryNANDBlock(struct yaffs_DeviceStruct *dev, -- int blockNo, -- yaffs_BlockState *state, -- __u32 *sequenceNumber) -+int yaffs_tags_compat_query_block(struct yaffs_dev_s *dev, -+ int block_no, -+ yaffs_block_state_t *state, -+ __u32 *seq_number) - { - -- yaffs_Spare spare0, spare1; -- static yaffs_Spare spareFF; -+ yaffs_spare spare0, spare1; -+ static yaffs_spare spareFF; - static int init; -- yaffs_ECCResult dummy; -+ yaffs_ecc_result dummy; - - if (!init) { - memset(&spareFF, 0xFF, sizeof(spareFF)); - init = 1; - } - -- *sequenceNumber = 0; -+ *seq_number = 0; - -- yaffs_ReadChunkFromNAND(dev, blockNo * dev->nChunksPerBlock, NULL, -+ yaffs_rd_chunk_nand(dev, block_no * dev->param.chunks_per_block, NULL, - &spare0, &dummy, 1); -- yaffs_ReadChunkFromNAND(dev, blockNo * dev->nChunksPerBlock + 1, NULL, -+ yaffs_rd_chunk_nand(dev, block_no * dev->param.chunks_per_block + 1, NULL, - &spare1, &dummy, 1); - -- if (yaffs_CountBits(spare0.blockStatus & spare1.blockStatus) < 7) -+ if (yaffs_count_bits(spare0.block_status & spare1.block_status) < 7) - *state = YAFFS_BLOCK_STATE_DEAD; - else if (memcmp(&spareFF, &spare0, sizeof(spareFF)) == 0) - *state = YAFFS_BLOCK_STATE_EMPTY; ---- a/fs/yaffs2/yaffs_tagscompat.h -+++ b/fs/yaffs2/yaffs_tagscompat.h -@@ -1,7 +1,7 @@ - /* - * YAFFS: Yet another Flash File System . A NAND-flash specific file system. - * -- * Copyright (C) 2002-2007 Aleph One Ltd. -+ * Copyright (C) 2002-2010 Aleph One Ltd. - * for Toby Churchill Ltd and Brightstar Engineering - * - * Created by Charles Manning <charles@aleph1.co.uk> -@@ -17,23 +17,23 @@ - #define __YAFFS_TAGSCOMPAT_H__ - - #include "yaffs_guts.h" --int yaffs_TagsCompatabilityWriteChunkWithTagsToNAND(yaffs_Device *dev, -- int chunkInNAND, -+int yaffs_tags_compat_wr(yaffs_dev_t *dev, -+ int nand_chunk, - const __u8 *data, -- const yaffs_ExtendedTags *tags); --int yaffs_TagsCompatabilityReadChunkWithTagsFromNAND(yaffs_Device *dev, -- int chunkInNAND, -+ const yaffs_ext_tags *tags); -+int yaffs_tags_compat_rd(yaffs_dev_t *dev, -+ int nand_chunk, - __u8 *data, -- yaffs_ExtendedTags *tags); --int yaffs_TagsCompatabilityMarkNANDBlockBad(struct yaffs_DeviceStruct *dev, -- int blockNo); --int yaffs_TagsCompatabilityQueryNANDBlock(struct yaffs_DeviceStruct *dev, -- int blockNo, -- yaffs_BlockState *state, -- __u32 *sequenceNumber); -+ yaffs_ext_tags *tags); -+int yaffs_tags_compat_mark_bad(struct yaffs_dev_s *dev, -+ int block_no); -+int yaffs_tags_compat_query_block(struct yaffs_dev_s *dev, -+ int block_no, -+ yaffs_block_state_t *state, -+ __u32 *seq_number); - --void yaffs_CalcTagsECC(yaffs_Tags *tags); --int yaffs_CheckECCOnTags(yaffs_Tags *tags); --int yaffs_CountBits(__u8 byte); -+void yaffs_calc_tags_ecc(yaffs_tags_t *tags); -+int yaffs_check_tags_ecc(yaffs_tags_t *tags); -+int yaffs_count_bits(__u8 byte); - - #endif ---- a/fs/yaffs2/yaffs_tagsvalidity.c -+++ b/fs/yaffs2/yaffs_tagsvalidity.c -@@ -1,7 +1,7 @@ - /* - * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. - * -- * Copyright (C) 2002-2007 Aleph One Ltd. -+ * Copyright (C) 2002-2010 Aleph One Ltd. - * for Toby Churchill Ltd and Brightstar Engineering - * - * Created by Charles Manning <charles@aleph1.co.uk> -@@ -13,16 +13,16 @@ - - #include "yaffs_tagsvalidity.h" - --void yaffs_InitialiseTags(yaffs_ExtendedTags *tags) -+void yaffs_init_tags(yaffs_ext_tags *tags) - { -- memset(tags, 0, sizeof(yaffs_ExtendedTags)); -- tags->validMarker0 = 0xAAAAAAAA; -- tags->validMarker1 = 0x55555555; -+ memset(tags, 0, sizeof(yaffs_ext_tags)); -+ tags->validity1 = 0xAAAAAAAA; -+ tags->validty1 = 0x55555555; - } - --int yaffs_ValidateTags(yaffs_ExtendedTags *tags) -+int yaffs_validate_tags(yaffs_ext_tags *tags) - { -- return (tags->validMarker0 == 0xAAAAAAAA && -- tags->validMarker1 == 0x55555555); -+ return (tags->validity1 == 0xAAAAAAAA && -+ tags->validty1 == 0x55555555); - - } ---- a/fs/yaffs2/yaffs_tagsvalidity.h -+++ b/fs/yaffs2/yaffs_tagsvalidity.h -@@ -1,7 +1,7 @@ - /* - * YAFFS: Yet another Flash File System . A NAND-flash specific file system. - * -- * Copyright (C) 2002-2007 Aleph One Ltd. -+ * Copyright (C) 2002-2010 Aleph One Ltd. - * for Toby Churchill Ltd and Brightstar Engineering - * - * Created by Charles Manning <charles@aleph1.co.uk> -@@ -19,6 +19,6 @@ - - #include "yaffs_guts.h" - --void yaffs_InitialiseTags(yaffs_ExtendedTags *tags); --int yaffs_ValidateTags(yaffs_ExtendedTags *tags); -+void yaffs_init_tags(yaffs_ext_tags *tags); -+int yaffs_validate_tags(yaffs_ext_tags *tags); - #endif ---- /dev/null -+++ b/fs/yaffs2/yaffs_trace.h -@@ -0,0 +1,60 @@ -+/* -+ * YAFFS: Yet another Flash File System . A NAND-flash specific file system. -+ * -+ * Copyright (C) 2002-2010 Aleph One Ltd. -+ * for Toby Churchill Ltd and Brightstar Engineering -+ * -+ * Created by Charles Manning <charles@aleph1.co.uk> -+ * -+ * This program is free software; you can redistribute it and/or modify -+ * it under the terms of the GNU Lesser General Public License version 2.1 as -+ * published by the Free Software Foundation. -+ * -+ * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL. -+ */ -+ -+ -+#ifndef __YTRACE_H__ -+#define __YTRACE_H__ -+ -+extern unsigned int yaffs_trace_mask; -+extern unsigned int yaffs_wr_attempts; -+ -+/* -+ * Tracing flags. -+ * The flags masked in YAFFS_TRACE_ALWAYS are always traced. -+ */ -+ -+#define YAFFS_TRACE_OS 0x00000002 -+#define YAFFS_TRACE_ALLOCATE 0x00000004 -+#define YAFFS_TRACE_SCAN 0x00000008 -+#define YAFFS_TRACE_BAD_BLOCKS 0x00000010 -+#define YAFFS_TRACE_ERASE 0x00000020 -+#define YAFFS_TRACE_GC 0x00000040 -+#define YAFFS_TRACE_WRITE 0x00000080 -+#define YAFFS_TRACE_TRACING 0x00000100 -+#define YAFFS_TRACE_DELETION 0x00000200 -+#define YAFFS_TRACE_BUFFERS 0x00000400 -+#define YAFFS_TRACE_NANDACCESS 0x00000800 -+#define YAFFS_TRACE_GC_DETAIL 0x00001000 -+#define YAFFS_TRACE_SCAN_DEBUG 0x00002000 -+#define YAFFS_TRACE_MTD 0x00004000 -+#define YAFFS_TRACE_CHECKPOINT 0x00008000 -+ -+#define YAFFS_TRACE_VERIFY 0x00010000 -+#define YAFFS_TRACE_VERIFY_NAND 0x00020000 -+#define YAFFS_TRACE_VERIFY_FULL 0x00040000 -+#define YAFFS_TRACE_VERIFY_ALL 0x000F0000 -+ -+#define YAFFS_TRACE_SYNC 0x00100000 -+#define YAFFS_TRACE_BACKGROUND 0x00200000 -+#define YAFFS_TRACE_LOCK 0x00400000 -+ -+#define YAFFS_TRACE_ERROR 0x40000000 -+#define YAFFS_TRACE_BUG 0x80000000 -+#define YAFFS_TRACE_ALWAYS 0xF0000000 -+ -+ -+#define T(mask, p) do { if ((mask) & (yaffs_trace_mask | YAFFS_TRACE_ALWAYS)) TOUT(p); } while (0) -+ -+#endif ---- /dev/null -+++ b/fs/yaffs2/yaffs_verify.c -@@ -0,0 +1,626 @@ -+/* -+ * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. -+ * -+ * Copyright (C) 2002-2010 Aleph One Ltd. -+ * for Toby Churchill Ltd and Brightstar Engineering -+ * -+ * Created by Charles Manning <charles@aleph1.co.uk> -+ * -+ * This program is free software; you can redistribute it and/or modify -+ * it under the terms of the GNU General Public License version 2 as -+ * published by the Free Software Foundation. -+ */ -+ -+ -+#include "yaffs_verify.h" -+#include "yaffs_trace.h" -+#include "yaffs_bitmap.h" -+#include "yaffs_getblockinfo.h" -+#include "yaffs_nand.h" -+ -+int yaffs_skip_verification(yaffs_dev_t *dev) -+{ -+ dev=dev; -+ return !(yaffs_trace_mask & (YAFFS_TRACE_VERIFY | YAFFS_TRACE_VERIFY_FULL)); -+} -+ -+static int yaffs_skip_full_verification(yaffs_dev_t *dev) -+{ -+ dev=dev; -+ return !(yaffs_trace_mask & (YAFFS_TRACE_VERIFY_FULL)); -+} -+ -+static int yaffs_skip_nand_verification(yaffs_dev_t *dev) -+{ -+ dev=dev; -+ return !(yaffs_trace_mask & (YAFFS_TRACE_VERIFY_NAND)); -+} -+ -+ -+static const char *block_stateName[] = { -+"Unknown", -+"Needs scanning", -+"Scanning", -+"Empty", -+"Allocating", -+"Full", -+"Dirty", -+"Checkpoint", -+"Collecting", -+"Dead" -+}; -+ -+ -+void yaffs_verify_blk(yaffs_dev_t *dev, yaffs_block_info_t *bi, int n) -+{ -+ int actuallyUsed; -+ int inUse; -+ -+ if (yaffs_skip_verification(dev)) -+ return; -+ -+ /* Report illegal runtime states */ -+ if (bi->block_state >= YAFFS_NUMBER_OF_BLOCK_STATES) -+ T(YAFFS_TRACE_VERIFY, (TSTR("Block %d has undefined state %d"TENDSTR), n, bi->block_state)); -+ -+ switch (bi->block_state) { -+ case YAFFS_BLOCK_STATE_UNKNOWN: -+ case YAFFS_BLOCK_STATE_SCANNING: -+ case YAFFS_BLOCK_STATE_NEEDS_SCANNING: -+ T(YAFFS_TRACE_VERIFY, (TSTR("Block %d has bad run-state %s"TENDSTR), -+ n, block_stateName[bi->block_state])); -+ } -+ -+ /* Check pages in use and soft deletions are legal */ -+ -+ actuallyUsed = bi->pages_in_use - bi->soft_del_pages; -+ -+ if (bi->pages_in_use < 0 || bi->pages_in_use > dev->param.chunks_per_block || -+ bi->soft_del_pages < 0 || bi->soft_del_pages > dev->param.chunks_per_block || -+ actuallyUsed < 0 || actuallyUsed > dev->param.chunks_per_block) -+ T(YAFFS_TRACE_VERIFY, (TSTR("Block %d has illegal values pages_in_used %d soft_del_pages %d"TENDSTR), -+ n, bi->pages_in_use, bi->soft_del_pages)); -+ -+ -+ /* Check chunk bitmap legal */ -+ inUse = yaffs_count_chunk_bits(dev, n); -+ if (inUse != bi->pages_in_use) -+ T(YAFFS_TRACE_VERIFY, (TSTR("Block %d has inconsistent values pages_in_use %d counted chunk bits %d"TENDSTR), -+ n, bi->pages_in_use, inUse)); -+ -+} -+ -+ -+ -+void yaffs_verify_collected_blk(yaffs_dev_t *dev, yaffs_block_info_t *bi, int n) -+{ -+ yaffs_verify_blk(dev, bi, n); -+ -+ /* After collection the block should be in the erased state */ -+ -+ if (bi->block_state != YAFFS_BLOCK_STATE_COLLECTING && -+ bi->block_state != YAFFS_BLOCK_STATE_EMPTY) { -+ T(YAFFS_TRACE_ERROR, (TSTR("Block %d is in state %d after gc, should be erased"TENDSTR), -+ n, bi->block_state)); -+ } -+} -+ -+void yaffs_verify_blocks(yaffs_dev_t *dev) -+{ -+ int i; -+ int nBlocksPerState[YAFFS_NUMBER_OF_BLOCK_STATES]; -+ int nIllegalBlockStates = 0; -+ -+ if (yaffs_skip_verification(dev)) -+ return; -+ -+ memset(nBlocksPerState, 0, sizeof(nBlocksPerState)); -+ -+ for (i = dev->internal_start_block; i <= dev->internal_end_block; i++) { -+ yaffs_block_info_t *bi = yaffs_get_block_info(dev, i); -+ yaffs_verify_blk(dev, bi, i); -+ -+ if (bi->block_state < YAFFS_NUMBER_OF_BLOCK_STATES) -+ nBlocksPerState[bi->block_state]++; -+ else -+ nIllegalBlockStates++; -+ } -+ -+ T(YAFFS_TRACE_VERIFY, (TSTR(""TENDSTR))); -+ T(YAFFS_TRACE_VERIFY, (TSTR("Block summary"TENDSTR))); -+ -+ T(YAFFS_TRACE_VERIFY, (TSTR("%d blocks have illegal states"TENDSTR), nIllegalBlockStates)); -+ if (nBlocksPerState[YAFFS_BLOCK_STATE_ALLOCATING] > 1) -+ T(YAFFS_TRACE_VERIFY, (TSTR("Too many allocating blocks"TENDSTR))); -+ -+ for (i = 0; i < YAFFS_NUMBER_OF_BLOCK_STATES; i++) -+ T(YAFFS_TRACE_VERIFY, -+ (TSTR("%s %d blocks"TENDSTR), -+ block_stateName[i], nBlocksPerState[i])); -+ -+ if (dev->blocks_in_checkpt != nBlocksPerState[YAFFS_BLOCK_STATE_CHECKPOINT]) -+ T(YAFFS_TRACE_VERIFY, -+ (TSTR("Checkpoint block count wrong dev %d count %d"TENDSTR), -+ dev->blocks_in_checkpt, nBlocksPerState[YAFFS_BLOCK_STATE_CHECKPOINT])); -+ -+ if (dev->n_erased_blocks != nBlocksPerState[YAFFS_BLOCK_STATE_EMPTY]) -+ T(YAFFS_TRACE_VERIFY, -+ (TSTR("Erased block count wrong dev %d count %d"TENDSTR), -+ dev->n_erased_blocks, nBlocksPerState[YAFFS_BLOCK_STATE_EMPTY])); -+ -+ if (nBlocksPerState[YAFFS_BLOCK_STATE_COLLECTING] > 1) -+ T(YAFFS_TRACE_VERIFY, -+ (TSTR("Too many collecting blocks %d (max is 1)"TENDSTR), -+ nBlocksPerState[YAFFS_BLOCK_STATE_COLLECTING])); -+ -+ T(YAFFS_TRACE_VERIFY, (TSTR(""TENDSTR))); -+ -+} -+ -+/* -+ * Verify the object header. oh must be valid, but obj and tags may be NULL in which -+ * case those tests will not be performed. -+ */ -+void yaffs_verify_oh(yaffs_obj_t *obj, yaffs_obj_header *oh, yaffs_ext_tags *tags, int parentCheck) -+{ -+ if (obj && yaffs_skip_verification(obj->my_dev)) -+ return; -+ -+ if (!(tags && obj && oh)) { -+ T(YAFFS_TRACE_VERIFY, -+ (TSTR("Verifying object header tags %p obj %p oh %p"TENDSTR), -+ tags, obj, oh)); -+ return; -+ } -+ -+ if (oh->type <= YAFFS_OBJECT_TYPE_UNKNOWN || -+ oh->type > YAFFS_OBJECT_TYPE_MAX) -+ T(YAFFS_TRACE_VERIFY, -+ (TSTR("Obj %d header type is illegal value 0x%x"TENDSTR), -+ tags->obj_id, oh->type)); -+ -+ if (tags->obj_id != obj->obj_id) -+ T(YAFFS_TRACE_VERIFY, -+ (TSTR("Obj %d header mismatch obj_id %d"TENDSTR), -+ tags->obj_id, obj->obj_id)); -+ -+ -+ /* -+ * Check that the object's parent ids match if parentCheck requested. -+ * -+ * Tests do not apply to the root object. -+ */ -+ -+ if (parentCheck && tags->obj_id > 1 && !obj->parent) -+ T(YAFFS_TRACE_VERIFY, -+ (TSTR("Obj %d header mismatch parent_id %d obj->parent is NULL"TENDSTR), -+ tags->obj_id, oh->parent_obj_id)); -+ -+ if (parentCheck && obj->parent && -+ oh->parent_obj_id != obj->parent->obj_id && -+ (oh->parent_obj_id != YAFFS_OBJECTID_UNLINKED || -+ obj->parent->obj_id != YAFFS_OBJECTID_DELETED)) -+ T(YAFFS_TRACE_VERIFY, -+ (TSTR("Obj %d header mismatch parent_id %d parent_obj_id %d"TENDSTR), -+ tags->obj_id, oh->parent_obj_id, obj->parent->obj_id)); -+ -+ if (tags->obj_id > 1 && oh->name[0] == 0) /* Null name */ -+ T(YAFFS_TRACE_VERIFY, -+ (TSTR("Obj %d header name is NULL"TENDSTR), -+ obj->obj_id)); -+ -+ if (tags->obj_id > 1 && ((__u8)(oh->name[0])) == 0xff) /* Trashed name */ -+ T(YAFFS_TRACE_VERIFY, -+ (TSTR("Obj %d header name is 0xFF"TENDSTR), -+ obj->obj_id)); -+} -+ -+ -+#if 0 -+/* Not being used, but don't want to throw away yet */ -+int yaffs_verify_tnode_worker(yaffs_obj_t *obj, yaffs_tnode_t *tn, -+ __u32 level, int chunk_offset) -+{ -+ int i; -+ yaffs_dev_t *dev = obj->my_dev; -+ int ok = 1; -+ -+ if (tn) { -+ if (level > 0) { -+ -+ for (i = 0; i < YAFFS_NTNODES_INTERNAL && ok; i++) { -+ if (tn->internal[i]) { -+ ok = yaffs_verify_tnode_worker(obj, -+ tn->internal[i], -+ level - 1, -+ (chunk_offset<<YAFFS_TNODES_INTERNAL_BITS) + i); -+ } -+ } -+ } else if (level == 0) { -+ yaffs_ext_tags tags; -+ __u32 obj_id = obj->obj_id; -+ -+ chunk_offset <<= YAFFS_TNODES_LEVEL0_BITS; -+ -+ for (i = 0; i < YAFFS_NTNODES_LEVEL0; i++) { -+ __u32 theChunk = yaffs_get_group_base(dev, tn, i); -+ -+ if (theChunk > 0) { -+ /* T(~0,(TSTR("verifying (%d:%d) %d"TENDSTR),tags.obj_id,tags.chunk_id,theChunk)); */ -+ yaffs_rd_chunk_tags_nand(dev, theChunk, NULL, &tags); -+ if (tags.obj_id != obj_id || tags.chunk_id != chunk_offset) { -+ T(~0, (TSTR("Object %d chunk_id %d NAND mismatch chunk %d tags (%d:%d)"TENDSTR), -+ obj_id, chunk_offset, theChunk, -+ tags.obj_id, tags.chunk_id)); -+ } -+ } -+ chunk_offset++; -+ } -+ } -+ } -+ -+ return ok; -+ -+} -+ -+#endif -+ -+void yaffs_verify_file(yaffs_obj_t *obj) -+{ -+ int requiredTallness; -+ int actualTallness; -+ __u32 lastChunk; -+ __u32 x; -+ __u32 i; -+ yaffs_dev_t *dev; -+ yaffs_ext_tags tags; -+ yaffs_tnode_t *tn; -+ __u32 obj_id; -+ -+ if (!obj) -+ return; -+ -+ if (yaffs_skip_verification(obj->my_dev)) -+ return; -+ -+ dev = obj->my_dev; -+ obj_id = obj->obj_id; -+ -+ /* Check file size is consistent with tnode depth */ -+ lastChunk = obj->variant.file_variant.file_size / dev->data_bytes_per_chunk + 1; -+ x = lastChunk >> YAFFS_TNODES_LEVEL0_BITS; -+ requiredTallness = 0; -+ while (x > 0) { -+ x >>= YAFFS_TNODES_INTERNAL_BITS; -+ requiredTallness++; -+ } -+ -+ actualTallness = obj->variant.file_variant.top_level; -+ -+ /* Check that the chunks in the tnode tree are all correct. -+ * We do this by scanning through the tnode tree and -+ * checking the tags for every chunk match. -+ */ -+ -+ if (yaffs_skip_nand_verification(dev)) -+ return; -+ -+ for (i = 1; i <= lastChunk; i++) { -+ tn = yaffs_find_tnode_0(dev, &obj->variant.file_variant, i); -+ -+ if (tn) { -+ __u32 theChunk = yaffs_get_group_base(dev, tn, i); -+ if (theChunk > 0) { -+ /* T(~0,(TSTR("verifying (%d:%d) %d"TENDSTR),obj_id,i,theChunk)); */ -+ yaffs_rd_chunk_tags_nand(dev, theChunk, NULL, &tags); -+ if (tags.obj_id != obj_id || tags.chunk_id != i) { -+ T(~0, (TSTR("Object %d chunk_id %d NAND mismatch chunk %d tags (%d:%d)"TENDSTR), -+ obj_id, i, theChunk, -+ tags.obj_id, tags.chunk_id)); -+ } -+ } -+ } -+ } -+} -+ -+ -+void yaffs_verify_link(yaffs_obj_t *obj) -+{ -+ if (obj && yaffs_skip_verification(obj->my_dev)) -+ return; -+ -+ /* Verify sane equivalent object */ -+} -+ -+void yaffs_verify_symlink(yaffs_obj_t *obj) -+{ -+ if (obj && yaffs_skip_verification(obj->my_dev)) -+ return; -+ -+ /* Verify symlink string */ -+} -+ -+void yaffs_verify_special(yaffs_obj_t *obj) -+{ -+ if (obj && yaffs_skip_verification(obj->my_dev)) -+ return; -+} -+ -+void yaffs_verify_obj(yaffs_obj_t *obj) -+{ -+ yaffs_dev_t *dev; -+ -+ __u32 chunkMin; -+ __u32 chunkMax; -+ -+ __u32 chunk_idOk; -+ __u32 chunkInRange; -+ __u32 chunkShouldNotBeDeleted; -+ __u32 chunkValid; -+ -+ if (!obj) -+ return; -+ -+ if (obj->being_created) -+ return; -+ -+ dev = obj->my_dev; -+ -+ if (yaffs_skip_verification(dev)) -+ return; -+ -+ /* Check sane object header chunk */ -+ -+ chunkMin = dev->internal_start_block * dev->param.chunks_per_block; -+ chunkMax = (dev->internal_end_block+1) * dev->param.chunks_per_block - 1; -+ -+ chunkInRange = (((unsigned)(obj->hdr_chunk)) >= chunkMin && ((unsigned)(obj->hdr_chunk)) <= chunkMax); -+ chunk_idOk = chunkInRange || (obj->hdr_chunk == 0); -+ chunkValid = chunkInRange && -+ yaffs_check_chunk_bit(dev, -+ obj->hdr_chunk / dev->param.chunks_per_block, -+ obj->hdr_chunk % dev->param.chunks_per_block); -+ chunkShouldNotBeDeleted = chunkInRange && !chunkValid; -+ -+ if (!obj->fake && -+ (!chunk_idOk || chunkShouldNotBeDeleted)) { -+ T(YAFFS_TRACE_VERIFY, -+ (TSTR("Obj %d has chunk_id %d %s %s"TENDSTR), -+ obj->obj_id, obj->hdr_chunk, -+ chunk_idOk ? "" : ",out of range", -+ chunkShouldNotBeDeleted ? ",marked as deleted" : "")); -+ } -+ -+ if (chunkValid && !yaffs_skip_nand_verification(dev)) { -+ yaffs_ext_tags tags; -+ yaffs_obj_header *oh; -+ __u8 *buffer = yaffs_get_temp_buffer(dev, __LINE__); -+ -+ oh = (yaffs_obj_header *)buffer; -+ -+ yaffs_rd_chunk_tags_nand(dev, obj->hdr_chunk, buffer, -+ &tags); -+ -+ yaffs_verify_oh(obj, oh, &tags, 1); -+ -+ yaffs_release_temp_buffer(dev, buffer, __LINE__); -+ } -+ -+ /* Verify it has a parent */ -+ if (obj && !obj->fake && -+ (!obj->parent || obj->parent->my_dev != dev)) { -+ T(YAFFS_TRACE_VERIFY, -+ (TSTR("Obj %d has parent pointer %p which does not look like an object"TENDSTR), -+ obj->obj_id, obj->parent)); -+ } -+ -+ /* Verify parent is a directory */ -+ if (obj->parent && obj->parent->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) { -+ T(YAFFS_TRACE_VERIFY, -+ (TSTR("Obj %d's parent is not a directory (type %d)"TENDSTR), -+ obj->obj_id, obj->parent->variant_type)); -+ } -+ -+ switch (obj->variant_type) { -+ case YAFFS_OBJECT_TYPE_FILE: -+ yaffs_verify_file(obj); -+ break; -+ case YAFFS_OBJECT_TYPE_SYMLINK: -+ yaffs_verify_symlink(obj); -+ break; -+ case YAFFS_OBJECT_TYPE_DIRECTORY: -+ yaffs_verify_dir(obj); -+ break; -+ case YAFFS_OBJECT_TYPE_HARDLINK: -+ yaffs_verify_link(obj); -+ break; -+ case YAFFS_OBJECT_TYPE_SPECIAL: -+ yaffs_verify_special(obj); -+ break; -+ case YAFFS_OBJECT_TYPE_UNKNOWN: -+ default: -+ T(YAFFS_TRACE_VERIFY, -+ (TSTR("Obj %d has illegaltype %d"TENDSTR), -+ obj->obj_id, obj->variant_type)); -+ break; -+ } -+} -+ -+void yaffs_verify_objects(yaffs_dev_t *dev) -+{ -+ yaffs_obj_t *obj; -+ int i; -+ struct ylist_head *lh; -+ -+ if (yaffs_skip_verification(dev)) -+ return; -+ -+ /* Iterate through the objects in each hash entry */ -+ -+ for (i = 0; i < YAFFS_NOBJECT_BUCKETS; i++) { -+ ylist_for_each(lh, &dev->obj_bucket[i].list) { -+ if (lh) { -+ obj = ylist_entry(lh, yaffs_obj_t, hash_link); -+ yaffs_verify_obj(obj); -+ } -+ } -+ } -+} -+ -+ -+void yaffs_verify_obj_in_dir(yaffs_obj_t *obj) -+{ -+ struct ylist_head *lh; -+ yaffs_obj_t *listObj; -+ -+ int count = 0; -+ -+ if (!obj) { -+ T(YAFFS_TRACE_ALWAYS, (TSTR("No object to verify" TENDSTR))); -+ YBUG(); -+ return; -+ } -+ -+ if (yaffs_skip_verification(obj->my_dev)) -+ return; -+ -+ if (!obj->parent) { -+ T(YAFFS_TRACE_ALWAYS, (TSTR("Object does not have parent" TENDSTR))); -+ YBUG(); -+ return; -+ } -+ -+ if (obj->parent->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) { -+ T(YAFFS_TRACE_ALWAYS, (TSTR("Parent is not directory" TENDSTR))); -+ YBUG(); -+ } -+ -+ /* Iterate through the objects in each hash entry */ -+ -+ ylist_for_each(lh, &obj->parent->variant.dir_variant.children) { -+ if (lh) { -+ listObj = ylist_entry(lh, yaffs_obj_t, siblings); -+ yaffs_verify_obj(listObj); -+ if (obj == listObj) -+ count++; -+ } -+ } -+ -+ if (count != 1) { -+ T(YAFFS_TRACE_ALWAYS, (TSTR("Object in directory %d times" TENDSTR), count)); -+ YBUG(); -+ } -+} -+ -+void yaffs_verify_dir(yaffs_obj_t *directory) -+{ -+ struct ylist_head *lh; -+ yaffs_obj_t *listObj; -+ -+ if (!directory) { -+ YBUG(); -+ return; -+ } -+ -+ if (yaffs_skip_full_verification(directory->my_dev)) -+ return; -+ -+ if (directory->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) { -+ T(YAFFS_TRACE_ALWAYS, (TSTR("Directory has wrong type: %d" TENDSTR), directory->variant_type)); -+ YBUG(); -+ } -+ -+ /* Iterate through the objects in each hash entry */ -+ -+ ylist_for_each(lh, &directory->variant.dir_variant.children) { -+ if (lh) { -+ listObj = ylist_entry(lh, yaffs_obj_t, siblings); -+ if (listObj->parent != directory) { -+ T(YAFFS_TRACE_ALWAYS, (TSTR("Object in directory list has wrong parent %p" TENDSTR), listObj->parent)); -+ YBUG(); -+ } -+ yaffs_verify_obj_in_dir(listObj); -+ } -+ } -+} -+ -+static int yaffs_free_verification_failures; -+ -+void yaffs_verify_free_chunks(yaffs_dev_t *dev) -+{ -+ int counted; -+ int difference; -+ -+ if (yaffs_skip_verification(dev)) -+ return; -+ -+ counted = yaffs_count_free_chunks(dev); -+ -+ difference = dev->n_free_chunks - counted; -+ -+ if (difference) { -+ T(YAFFS_TRACE_ALWAYS, -+ (TSTR("Freechunks verification failure %d %d %d" TENDSTR), -+ dev->n_free_chunks, counted, difference)); -+ yaffs_free_verification_failures++; -+ } -+} -+ -+int yaffs_verify_file_sane(yaffs_obj_t *in) -+{ -+#if 0 -+ int chunk; -+ int n_chunks; -+ int fSize; -+ int failed = 0; -+ int obj_id; -+ yaffs_tnode_t *tn; -+ yaffs_tags_t localTags; -+ yaffs_tags_t *tags = &localTags; -+ int theChunk; -+ int is_deleted; -+ -+ if (in->variant_type != YAFFS_OBJECT_TYPE_FILE) -+ return YAFFS_FAIL; -+ -+ obj_id = in->obj_id; -+ fSize = in->variant.file_variant.file_size; -+ n_chunks = -+ (fSize + in->my_dev->data_bytes_per_chunk - 1) / in->my_dev->data_bytes_per_chunk; -+ -+ for (chunk = 1; chunk <= n_chunks; chunk++) { -+ tn = yaffs_find_tnode_0(in->my_dev, &in->variant.file_variant, -+ chunk); -+ -+ if (tn) { -+ -+ theChunk = yaffs_get_group_base(dev, tn, chunk); -+ -+ if (yaffs_check_chunk_bits -+ (dev, theChunk / dev->param.chunks_per_block, -+ theChunk % dev->param.chunks_per_block)) { -+ -+ yaffs_rd_chunk_tags_nand(in->my_dev, theChunk, -+ tags, -+ &is_deleted); -+ if (yaffs_tags_match -+ (tags, in->obj_id, chunk, is_deleted)) { -+ /* found it; */ -+ -+ } -+ } else { -+ -+ failed = 1; -+ } -+ -+ } else { -+ /* T(("No level 0 found for %d\n", chunk)); */ -+ } -+ } -+ -+ return failed ? YAFFS_FAIL : YAFFS_OK; -+#else -+ in=in; -+ return YAFFS_OK; -+#endif -+} ---- /dev/null -+++ b/fs/yaffs2/yaffs_verify.h -@@ -0,0 +1,39 @@ -+/* -+ * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. -+ * -+ * Copyright (C) 2002-2010 Aleph One Ltd. -+ * for Toby Churchill Ltd and Brightstar Engineering -+ * -+ * Created by Charles Manning <charles@aleph1.co.uk> -+ * -+ * This program is free software; you can redistribute it and/or modify -+ * it under the terms of the GNU General Public License version 2 as -+ * published by the Free Software Foundation. -+ */ -+ -+#ifndef __YAFFS_VERIFY_H__ -+#define __YAFFS_VERIFY_H__ -+ -+#include "yaffs_guts.h" -+ -+void yaffs_verify_blk(yaffs_dev_t *dev, yaffs_block_info_t *bi, int n); -+void yaffs_verify_collected_blk(yaffs_dev_t *dev, yaffs_block_info_t *bi, int n); -+void yaffs_verify_blocks(yaffs_dev_t *dev); -+ -+void yaffs_verify_oh(yaffs_obj_t *obj, yaffs_obj_header *oh, yaffs_ext_tags *tags, int parentCheck); -+void yaffs_verify_file(yaffs_obj_t *obj); -+void yaffs_verify_link(yaffs_obj_t *obj); -+void yaffs_verify_symlink(yaffs_obj_t *obj); -+void yaffs_verify_special(yaffs_obj_t *obj); -+void yaffs_verify_obj(yaffs_obj_t *obj); -+void yaffs_verify_objects(yaffs_dev_t *dev); -+void yaffs_verify_obj_in_dir(yaffs_obj_t *obj); -+void yaffs_verify_dir(yaffs_obj_t *directory); -+void yaffs_verify_free_chunks(yaffs_dev_t *dev); -+ -+int yaffs_verify_file_sane(yaffs_obj_t *obj); -+ -+int yaffs_skip_verification(yaffs_dev_t *dev); -+ -+#endif -+ ---- /dev/null -+++ b/fs/yaffs2/yaffs_vfs_glue.c -@@ -0,0 +1,3576 @@ -+/* -+ * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. -+ * -+ * Copyright (C) 2002-2010 Aleph One Ltd. -+ * for Toby Churchill Ltd and Brightstar Engineering -+ * -+ * Created by Charles Manning <charles@aleph1.co.uk> -+ * Acknowledgements: -+ * Luc van OostenRyck for numerous patches. -+ * Nick Bane for numerous patches. -+ * Nick Bane for 2.5/2.6 integration. -+ * Andras Toth for mknod rdev issue. -+ * Michael Fischer for finding the problem with inode inconsistency. -+ * Some code bodily lifted from JFFS -+ * -+ * This program is free software; you can redistribute it and/or modify -+ * it under the terms of the GNU General Public License version 2 as -+ * published by the Free Software Foundation. -+ */ -+ -+/* -+ * -+ * This is the file system front-end to YAFFS that hooks it up to -+ * the VFS. -+ * -+ * Special notes: -+ * >> 2.4: sb->u.generic_sbp points to the yaffs_dev_t associated with -+ * this superblock -+ * >> 2.6: sb->s_fs_info points to the yaffs_dev_t associated with this -+ * superblock -+ * >> inode->u.generic_ip points to the associated yaffs_obj_t. -+ */ -+ -+/* -+ * There are two variants of the VFS glue code. This variant should compile -+ * for any version of Linux. -+ */ -+#include <linux/version.h> -+ -+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 10)) -+#define YAFFS_COMPILE_BACKGROUND -+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6, 23)) -+#define YAFFS_COMPILE_FREEZER -+#endif -+#endif -+ -+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,28)) -+#define YAFFS_COMPILE_EXPORTFS -+#endif -+ -+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,35)) -+#define YAFFS_USE_SETATTR_COPY -+#define YAFFS_USE_TRUNCATE_SETSIZE -+#endif -+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,35)) -+#define YAFFS_HAS_EVICT_INODE -+#endif -+ -+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,13)) -+#define YAFFS_NEW_FOLLOW_LINK 1 -+#else -+#define YAFFS_NEW_FOLLOW_LINK 0 -+#endif -+ -+#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 19)) -+#include <linux/config.h> -+#endif -+ -+#include <linux/kernel.h> -+#include <linux/module.h> -+#include <linux/slab.h> -+#include <linux/init.h> -+#include <linux/fs.h> -+#include <linux/proc_fs.h> -+#include <linux/smp_lock.h> -+#include <linux/pagemap.h> -+#include <linux/mtd/mtd.h> -+#include <linux/interrupt.h> -+#include <linux/string.h> -+#include <linux/ctype.h> -+ -+#if (YAFFS_NEW_FOLLOW_LINK == 1) -+#include <linux/namei.h> -+#endif -+ -+#ifdef YAFFS_COMPILE_EXPORTFS -+#include <linux/exportfs.h> -+#endif -+ -+#ifdef YAFFS_COMPILE_BACKGROUND -+#include <linux/kthread.h> -+#include <linux/delay.h> -+#endif -+#ifdef YAFFS_COMPILE_FREEZER -+#include <linux/freezer.h> -+#endif -+ -+#include <asm/div64.h> -+ -+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) -+ -+#include <linux/statfs.h> -+ -+#define UnlockPage(p) unlock_page(p) -+#define Page_Uptodate(page) test_bit(PG_uptodate, &(page)->flags) -+ -+/* FIXME: use sb->s_id instead ? */ -+#define yaffs_devname(sb, buf) bdevname(sb->s_bdev, buf) -+ -+#else -+ -+#include <linux/locks.h> -+#define BDEVNAME_SIZE 0 -+#define yaffs_devname(sb, buf) kdevname(sb->s_dev) -+ -+#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 5, 0)) -+/* added NCB 26/5/2006 for 2.4.25-vrs2-tcl1 kernel */ -+#define __user -+#endif -+ -+#endif -+ -+#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 26)) -+#define YPROC_ROOT (&proc_root) -+#else -+#define YPROC_ROOT NULL -+#endif -+ -+#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,26)) -+#define Y_INIT_TIMER(a) init_timer(a) -+#else -+#define Y_INIT_TIMER(a) init_timer_on_stack(a) -+#endif -+ -+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) -+#define WRITE_SIZE_STR "writesize" -+#define WRITE_SIZE(mtd) ((mtd)->writesize) -+#else -+#define WRITE_SIZE_STR "oobblock" -+#define WRITE_SIZE(mtd) ((mtd)->oobblock) -+#endif -+ -+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 27)) -+#define YAFFS_USE_WRITE_BEGIN_END 1 -+#else -+#define YAFFS_USE_WRITE_BEGIN_END 0 -+#endif -+ -+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 28)) -+static uint32_t YCALCBLOCKS(uint64_t partition_size, uint32_t block_size) -+{ -+ uint64_t result = partition_size; -+ do_div(result, block_size); -+ return (uint32_t)result; -+} -+#else -+#define YCALCBLOCKS(s, b) ((s)/(b)) -+#endif -+ -+#include <linux/uaccess.h> -+#include <linux/mtd/mtd.h> -+ -+#include "yportenv.h" -+#include "yaffs_trace.h" -+#include "yaffs_guts.h" -+ -+#include "yaffs_linux.h" -+ -+#include "yaffs_mtdif.h" -+#include "yaffs_mtdif1.h" -+#include "yaffs_mtdif2.h" -+ -+unsigned int yaffs_trace_mask = YAFFS_TRACE_BAD_BLOCKS | YAFFS_TRACE_ALWAYS; -+unsigned int yaffs_wr_attempts = YAFFS_WR_ATTEMPTS; -+unsigned int yaffs_auto_checkpoint = 1; -+unsigned int yaffs_gc_control = 1; -+unsigned int yaffs_bg_enable = 1; -+ -+/* Module Parameters */ -+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) -+module_param(yaffs_trace_mask, uint, 0644); -+module_param(yaffs_wr_attempts, uint, 0644); -+module_param(yaffs_auto_checkpoint, uint, 0644); -+module_param(yaffs_gc_control, uint, 0644); -+module_param(yaffs_bg_enable, uint, 0644); -+#else -+MODULE_PARM(yaffs_trace_mask, "i"); -+MODULE_PARM(yaffs_wr_attempts, "i"); -+MODULE_PARM(yaffs_auto_checkpoint, "i"); -+MODULE_PARM(yaffs_gc_control, "i"); -+#endif -+ -+#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 25)) -+/* use iget and read_inode */ -+#define Y_IGET(sb, inum) iget((sb), (inum)) -+static void yaffs_read_inode(struct inode *inode); -+ -+#else -+/* Call local equivalent */ -+#define YAFFS_USE_OWN_IGET -+#define Y_IGET(sb, inum) yaffs_iget((sb), (inum)) -+ -+static struct inode *yaffs_iget(struct super_block *sb, unsigned long ino); -+#endif -+ -+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 18)) -+#define yaffs_InodeToObjectLV(iptr) ((iptr)->i_private) -+#else -+#define yaffs_InodeToObjectLV(iptr) ((iptr)->u.generic_ip) -+#endif -+ -+#define yaffs_InodeToObject(iptr) ((yaffs_obj_t *)(yaffs_InodeToObjectLV(iptr))) -+#define yaffs_dentry_to_obj(dptr) yaffs_InodeToObject((dptr)->d_inode) -+ -+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) -+#define yaffs_SuperToDevice(sb) ((yaffs_dev_t *)sb->s_fs_info) -+#else -+#define yaffs_SuperToDevice(sb) ((yaffs_dev_t *)sb->u.generic_sbp) -+#endif -+ -+ -+#define update_dir_time(dir) do {\ -+ (dir)->i_ctime = (dir)->i_mtime = CURRENT_TIME; \ -+ } while(0) -+ -+static void yaffs_put_super(struct super_block *sb); -+ -+static ssize_t yaffs_file_write(struct file *f, const char *buf, size_t n, -+ loff_t *pos); -+static ssize_t yaffs_hold_space(struct file *f); -+static void yaffs_release_space(struct file *f); -+ -+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) -+static int yaffs_file_flush(struct file *file, fl_owner_t id); -+#else -+static int yaffs_file_flush(struct file *file); -+#endif -+ -+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 34)) -+static int yaffs_sync_object(struct file *file, int datasync); -+#else -+static int yaffs_sync_object(struct file *file, struct dentry *dentry, -+ int datasync); -+#endif -+ -+static int yaffs_readdir(struct file *f, void *dirent, filldir_t filldir); -+ -+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) -+static int yaffs_create(struct inode *dir, struct dentry *dentry, int mode, -+ struct nameidata *n); -+static struct dentry *yaffs_lookup(struct inode *dir, struct dentry *dentry, -+ struct nameidata *n); -+#else -+static int yaffs_create(struct inode *dir, struct dentry *dentry, int mode); -+static struct dentry *yaffs_lookup(struct inode *dir, struct dentry *dentry); -+#endif -+static int yaffs_link(struct dentry *old_dentry, struct inode *dir, -+ struct dentry *dentry); -+static int yaffs_unlink(struct inode *dir, struct dentry *dentry); -+static int yaffs_symlink(struct inode *dir, struct dentry *dentry, -+ const char *symname); -+static int yaffs_mkdir(struct inode *dir, struct dentry *dentry, int mode); -+ -+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) -+static int yaffs_mknod(struct inode *dir, struct dentry *dentry, int mode, -+ dev_t dev); -+#else -+static int yaffs_mknod(struct inode *dir, struct dentry *dentry, int mode, -+ int dev); -+#endif -+static int yaffs_rename(struct inode *old_dir, struct dentry *old_dentry, -+ struct inode *new_dir, struct dentry *new_dentry); -+static int yaffs_setattr(struct dentry *dentry, struct iattr *attr); -+ -+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) -+static int yaffs_sync_fs(struct super_block *sb, int wait); -+static void yaffs_write_super(struct super_block *sb); -+#else -+static int yaffs_sync_fs(struct super_block *sb); -+static int yaffs_write_super(struct super_block *sb); -+#endif -+ -+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) -+static int yaffs_statfs(struct dentry *dentry, struct kstatfs *buf); -+#elif (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) -+static int yaffs_statfs(struct super_block *sb, struct kstatfs *buf); -+#else -+static int yaffs_statfs(struct super_block *sb, struct statfs *buf); -+#endif -+ -+#ifdef YAFFS_HAS_PUT_INODE -+static void yaffs_put_inode(struct inode *inode); -+#endif -+ -+#ifdef YAFFS_HAS_EVICT_INODE -+static void yaffs_evict_inode(struct inode *); -+#else -+static void yaffs_delete_inode(struct inode *); -+static void yaffs_clear_inode(struct inode *); -+#endif -+ -+static int yaffs_readpage(struct file *file, struct page *page); -+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) -+static int yaffs_writepage(struct page *page, struct writeback_control *wbc); -+#else -+static int yaffs_writepage(struct page *page); -+#endif -+ -+#ifdef CONFIG_YAFFS_XATTR -+int yaffs_setxattr(struct dentry *dentry, const char *name, -+ const void *value, size_t size, int flags); -+ssize_t yaffs_getxattr(struct dentry *dentry, const char *name, void *buff, -+ size_t size); -+int yaffs_removexattr(struct dentry *dentry, const char *name); -+ssize_t yaffs_listxattr(struct dentry *dentry, char *buff, size_t size); -+#endif -+ -+ -+#if (YAFFS_USE_WRITE_BEGIN_END != 0) -+static int yaffs_write_begin(struct file *filp, struct address_space *mapping, -+ loff_t pos, unsigned len, unsigned flags, -+ struct page **pagep, void **fsdata); -+static int yaffs_write_end(struct file *filp, struct address_space *mapping, -+ loff_t pos, unsigned len, unsigned copied, -+ struct page *pg, void *fsdadata); -+#else -+static int yaffs_prepare_write(struct file *f, struct page *pg, -+ unsigned offset, unsigned to); -+static int yaffs_commit_write(struct file *f, struct page *pg, unsigned offset, -+ unsigned to); -+ -+#endif -+ -+static int yaffs_readlink(struct dentry *dentry, char __user *buffer, -+ int buflen); -+#if (YAFFS_NEW_FOLLOW_LINK == 1) -+void yaffs_put_link(struct dentry *dentry, struct nameidata *nd, void *alias); -+static void *yaffs_follow_link(struct dentry *dentry, struct nameidata *nd); -+#else -+static int yaffs_follow_link(struct dentry *dentry, struct nameidata *nd); -+#endif -+ -+static void yaffs_touch_super(yaffs_dev_t *dev); -+ -+static loff_t yaffs_dir_llseek(struct file *file, loff_t offset, int origin); -+ -+static int yaffs_vfs_setattr(struct inode *, struct iattr *); -+ -+ -+static struct address_space_operations yaffs_file_address_operations = { -+ .readpage = yaffs_readpage, -+ .writepage = yaffs_writepage, -+#if (YAFFS_USE_WRITE_BEGIN_END > 0) -+ .write_begin = yaffs_write_begin, -+ .write_end = yaffs_write_end, -+#else -+ .prepare_write = yaffs_prepare_write, -+ .commit_write = yaffs_commit_write, -+#endif -+}; -+ -+ -+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 22)) -+static const struct file_operations yaffs_file_operations = { -+ .read = do_sync_read, -+ .write = do_sync_write, -+ .aio_read = generic_file_aio_read, -+ .aio_write = generic_file_aio_write, -+ .mmap = generic_file_mmap, -+ .flush = yaffs_file_flush, -+ .fsync = yaffs_sync_object, -+ .splice_read = generic_file_splice_read, -+ .splice_write = generic_file_splice_write, -+ .llseek = generic_file_llseek, -+}; -+ -+#elif (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 18)) -+ -+static const struct file_operations yaffs_file_operations = { -+ .read = do_sync_read, -+ .write = do_sync_write, -+ .aio_read = generic_file_aio_read, -+ .aio_write = generic_file_aio_write, -+ .mmap = generic_file_mmap, -+ .flush = yaffs_file_flush, -+ .fsync = yaffs_sync_object, -+ .sendfile = generic_file_sendfile, -+}; -+ -+#else -+ -+static const struct file_operations yaffs_file_operations = { -+ .read = generic_file_read, -+ .write = generic_file_write, -+ .mmap = generic_file_mmap, -+ .flush = yaffs_file_flush, -+ .fsync = yaffs_sync_object, -+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) -+ .sendfile = generic_file_sendfile, -+#endif -+}; -+#endif -+ -+#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,25)) -+static void zero_user_segment(struct page *page, unsigned start, unsigned end) -+{ -+ void * kaddr = kmap_atomic(page, KM_USER0); -+ memset(kaddr + start, 0, end - start); -+ kunmap_atomic(kaddr, KM_USER0); -+ flush_dcache_page(page); -+} -+#endif -+ -+ -+static const struct inode_operations yaffs_file_inode_operations = { -+ .setattr = yaffs_setattr, -+#ifdef CONFIG_YAFFS_XATTR -+ .setxattr = yaffs_setxattr, -+ .getxattr = yaffs_getxattr, -+ .listxattr = yaffs_listxattr, -+ .removexattr = yaffs_removexattr, -+#endif -+}; -+ -+static const struct inode_operations yaffs_symlink_inode_operations = { -+ .readlink = yaffs_readlink, -+ .follow_link = yaffs_follow_link, -+#if (YAFFS_NEW_FOLLOW_LINK == 1) -+ .put_link = yaffs_put_link, -+#endif -+ .setattr = yaffs_setattr, -+#ifdef CONFIG_YAFFS_XATTR -+ .setxattr = yaffs_setxattr, -+ .getxattr = yaffs_getxattr, -+ .listxattr = yaffs_listxattr, -+ .removexattr = yaffs_removexattr, -+#endif -+}; -+ -+static const struct inode_operations yaffs_dir_inode_operations = { -+ .create = yaffs_create, -+ .lookup = yaffs_lookup, -+ .link = yaffs_link, -+ .unlink = yaffs_unlink, -+ .symlink = yaffs_symlink, -+ .mkdir = yaffs_mkdir, -+ .rmdir = yaffs_unlink, -+ .mknod = yaffs_mknod, -+ .rename = yaffs_rename, -+ .setattr = yaffs_setattr, -+#ifdef CONFIG_YAFFS_XATTR -+ .setxattr = yaffs_setxattr, -+ .getxattr = yaffs_getxattr, -+ .listxattr = yaffs_listxattr, -+ .removexattr = yaffs_removexattr, -+#endif -+}; -+ -+static const struct file_operations yaffs_dir_operations = { -+ .read = generic_read_dir, -+ .readdir = yaffs_readdir, -+ .fsync = yaffs_sync_object, -+ .llseek = yaffs_dir_llseek, -+}; -+ -+static const struct super_operations yaffs_super_ops = { -+ .statfs = yaffs_statfs, -+ -+#ifndef YAFFS_USE_OWN_IGET -+ .read_inode = yaffs_read_inode, -+#endif -+#ifdef YAFFS_HAS_PUT_INODE -+ .put_inode = yaffs_put_inode, -+#endif -+ .put_super = yaffs_put_super, -+#ifdef YAFFS_HAS_EVICT_INODE -+ .evict_inode = yaffs_evict_inode, -+#else -+ .delete_inode = yaffs_delete_inode, -+ .clear_inode = yaffs_clear_inode, -+#endif -+ .sync_fs = yaffs_sync_fs, -+ .write_super = yaffs_write_super, -+}; -+ -+ -+static int yaffs_vfs_setattr(struct inode *inode, struct iattr *attr) -+{ -+#ifdef YAFFS_USE_SETATTR_COPY -+ setattr_copy(inode,attr); -+ return 0; -+#else -+ return inode_setattr(inode, attr); -+#endif -+ -+} -+ -+static int yaffs_vfs_setsize(struct inode *inode, loff_t newsize) -+{ -+#ifdef YAFFS_USE_TRUNCATE_SETSIZE -+ truncate_setsize(inode,newsize); -+ return 0; -+#else -+ truncate_inode_pages(&inode->i_data,newsize); -+ return 0; -+#endif -+ -+} -+ -+static unsigned yaffs_gc_control_callback(yaffs_dev_t *dev) -+{ -+ return yaffs_gc_control; -+} -+ -+static void yaffs_gross_lock(yaffs_dev_t *dev) -+{ -+ T(YAFFS_TRACE_LOCK, (TSTR("yaffs locking %p\n"), current)); -+ down(&(yaffs_dev_to_lc(dev)->grossLock)); -+ T(YAFFS_TRACE_LOCK, (TSTR("yaffs locked %p\n"), current)); -+} -+ -+static void yaffs_gross_unlock(yaffs_dev_t *dev) -+{ -+ T(YAFFS_TRACE_LOCK, (TSTR("yaffs unlocking %p\n"), current)); -+ up(&(yaffs_dev_to_lc(dev)->grossLock)); -+} -+ -+#ifdef YAFFS_COMPILE_EXPORTFS -+ -+static struct inode * -+yaffs2_nfs_get_inode(struct super_block *sb, uint64_t ino, uint32_t generation) -+{ -+ return Y_IGET(sb, ino); -+} -+ -+static struct dentry * -+yaffs2_fh_to_dentry(struct super_block *sb, struct fid *fid, int fh_len, int fh_type) -+{ -+ return generic_fh_to_dentry(sb, fid, fh_len, fh_type, yaffs2_nfs_get_inode) ; -+} -+ -+static struct dentry * -+ yaffs2_fh_to_parent(struct super_block *sb, struct fid *fid, int fh_len, int fh_type) -+{ -+ return generic_fh_to_parent(sb, fid, fh_len, fh_type, yaffs2_nfs_get_inode); -+} -+ -+struct dentry *yaffs2_get_parent(struct dentry *dentry) -+{ -+ -+ struct super_block *sb = dentry->d_inode->i_sb; -+ struct dentry *parent = ERR_PTR(-ENOENT); -+ struct inode *inode; -+ unsigned long parent_ino; -+ yaffs_obj_t *d_obj; -+ yaffs_obj_t *parent_obj; -+ -+ d_obj = yaffs_InodeToObject(dentry->d_inode); -+ -+ if (d_obj) { -+ parent_obj = d_obj->parent; -+ if (parent_obj) { -+ parent_ino = yaffs_get_obj_inode(parent_obj); -+ inode = Y_IGET(sb, parent_ino); -+ -+ if (IS_ERR(inode)) { -+ parent = ERR_CAST(inode); -+ } else { -+ parent = d_obtain_alias(inode); -+ if (!IS_ERR(parent)) { -+ parent = ERR_PTR(-ENOMEM); -+ iput(inode); -+ } -+ } -+ } -+ } -+ -+ return parent; -+} -+ -+/* Just declare a zero structure as a NULL value implies -+ * using the default functions of exportfs. -+ */ -+ -+static struct export_operations yaffs_export_ops = -+{ -+ .fh_to_dentry = yaffs2_fh_to_dentry, -+ .fh_to_parent = yaffs2_fh_to_parent, -+ .get_parent = yaffs2_get_parent, -+} ; -+ -+#endif -+ -+/*-----------------------------------------------------------------*/ -+/* Directory search context allows us to unlock access to yaffs during -+ * filldir without causing problems with the directory being modified. -+ * This is similar to the tried and tested mechanism used in yaffs direct. -+ * -+ * A search context iterates along a doubly linked list of siblings in the -+ * directory. If the iterating object is deleted then this would corrupt -+ * the list iteration, likely causing a crash. The search context avoids -+ * this by using the remove_obj_fn to move the search context to the -+ * next object before the object is deleted. -+ * -+ * Many readdirs (and thus seach conexts) may be alive simulateously so -+ * each yaffs_dev_t has a list of these. -+ * -+ * A seach context lives for the duration of a readdir. -+ * -+ * All these functions must be called while yaffs is locked. -+ */ -+ -+struct yaffs_SearchContext { -+ yaffs_dev_t *dev; -+ yaffs_obj_t *dirObj; -+ yaffs_obj_t *nextReturn; -+ struct ylist_head others; -+}; -+ -+/* -+ * yaffs_NewSearch() creates a new search context, initialises it and -+ * adds it to the device's search context list. -+ * -+ * Called at start of readdir. -+ */ -+static struct yaffs_SearchContext * yaffs_NewSearch(yaffs_obj_t *dir) -+{ -+ yaffs_dev_t *dev = dir->my_dev; -+ struct yaffs_SearchContext *sc = YMALLOC(sizeof(struct yaffs_SearchContext)); -+ if(sc){ -+ sc->dirObj = dir; -+ sc->dev = dev; -+ if( ylist_empty(&sc->dirObj->variant.dir_variant.children)) -+ sc->nextReturn = NULL; -+ else -+ sc->nextReturn = ylist_entry( -+ dir->variant.dir_variant.children.next, -+ yaffs_obj_t,siblings); -+ YINIT_LIST_HEAD(&sc->others); -+ ylist_add(&sc->others,&(yaffs_dev_to_lc(dev)->searchContexts)); -+ } -+ return sc; -+} -+ -+/* -+ * yaffs_search_end() disposes of a search context and cleans up. -+ */ -+static void yaffs_search_end(struct yaffs_SearchContext * sc) -+{ -+ if(sc){ -+ ylist_del(&sc->others); -+ YFREE(sc); -+ } -+} -+ -+/* -+ * yaffs_search_advance() moves a search context to the next object. -+ * Called when the search iterates or when an object removal causes -+ * the search context to be moved to the next object. -+ */ -+static void yaffs_search_advance(struct yaffs_SearchContext *sc) -+{ -+ if(!sc) -+ return; -+ -+ if( sc->nextReturn == NULL || -+ ylist_empty(&sc->dirObj->variant.dir_variant.children)) -+ sc->nextReturn = NULL; -+ else { -+ struct ylist_head *next = sc->nextReturn->siblings.next; -+ -+ if( next == &sc->dirObj->variant.dir_variant.children) -+ sc->nextReturn = NULL; /* end of list */ -+ else -+ sc->nextReturn = ylist_entry(next,yaffs_obj_t,siblings); -+ } -+} -+ -+/* -+ * yaffs_remove_obj_callback() is called when an object is unlinked. -+ * We check open search contexts and advance any which are currently -+ * on the object being iterated. -+ */ -+static void yaffs_remove_obj_callback(yaffs_obj_t *obj) -+{ -+ -+ struct ylist_head *i; -+ struct yaffs_SearchContext *sc; -+ struct ylist_head *search_contexts = &(yaffs_dev_to_lc(obj->my_dev)->searchContexts); -+ -+ -+ /* Iterate through the directory search contexts. -+ * If any are currently on the object being removed, then advance -+ * the search context to the next object to prevent a hanging pointer. -+ */ -+ ylist_for_each(i, search_contexts) { -+ if (i) { -+ sc = ylist_entry(i, struct yaffs_SearchContext,others); -+ if(sc->nextReturn == obj) -+ yaffs_search_advance(sc); -+ } -+ } -+ -+} -+ -+ -+/*-----------------------------------------------------------------*/ -+ -+static int yaffs_readlink(struct dentry *dentry, char __user *buffer, -+ int buflen) -+{ -+ unsigned char *alias; -+ int ret; -+ -+ yaffs_dev_t *dev = yaffs_dentry_to_obj(dentry)->my_dev; -+ -+ yaffs_gross_lock(dev); -+ -+ alias = yaffs_get_symlink_alias(yaffs_dentry_to_obj(dentry)); -+ -+ yaffs_gross_unlock(dev); -+ -+ if (!alias) -+ return -ENOMEM; -+ -+ ret = vfs_readlink(dentry, buffer, buflen, alias); -+ kfree(alias); -+ return ret; -+} -+ -+#if (YAFFS_NEW_FOLLOW_LINK == 1) -+static void *yaffs_follow_link(struct dentry *dentry, struct nameidata *nd) -+#else -+static int yaffs_follow_link(struct dentry *dentry, struct nameidata *nd) -+#endif -+{ -+ unsigned char *alias; -+ int ret; -+ yaffs_dev_t *dev = yaffs_dentry_to_obj(dentry)->my_dev; -+ -+ yaffs_gross_lock(dev); -+ -+ alias = yaffs_get_symlink_alias(yaffs_dentry_to_obj(dentry)); -+ yaffs_gross_unlock(dev); -+ -+ if (!alias) { -+ ret = -ENOMEM; -+ goto out; -+ } -+ -+#if (YAFFS_NEW_FOLLOW_LINK == 1) -+ nd_set_link(nd, alias); -+ ret = (int)alias; -+out: -+ return ERR_PTR(ret); -+#else -+ ret = vfs_follow_link(nd, alias); -+ kfree(alias); -+out: -+ return ret; -+#endif -+} -+ -+#if (YAFFS_NEW_FOLLOW_LINK == 1) -+void yaffs_put_link(struct dentry *dentry, struct nameidata *nd, void *alias) { -+ kfree(alias); -+} -+#endif -+ -+struct inode *yaffs_get_inode(struct super_block *sb, int mode, int dev, -+ yaffs_obj_t *obj); -+ -+/* -+ * Lookup is used to find objects in the fs -+ */ -+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) -+ -+static struct dentry *yaffs_lookup(struct inode *dir, struct dentry *dentry, -+ struct nameidata *n) -+#else -+static struct dentry *yaffs_lookup(struct inode *dir, struct dentry *dentry) -+#endif -+{ -+ yaffs_obj_t *obj; -+ struct inode *inode = NULL; /* NCB 2.5/2.6 needs NULL here */ -+ -+ yaffs_dev_t *dev = yaffs_InodeToObject(dir)->my_dev; -+ -+ if(current != yaffs_dev_to_lc(dev)->readdirProcess) -+ yaffs_gross_lock(dev); -+ -+ T(YAFFS_TRACE_OS, -+ (TSTR("yaffs_lookup for %d:%s\n"), -+ yaffs_InodeToObject(dir)->obj_id, dentry->d_name.name)); -+ -+ obj = yaffs_find_by_name(yaffs_InodeToObject(dir), -+ dentry->d_name.name); -+ -+ obj = yaffs_get_equivalent_obj(obj); /* in case it was a hardlink */ -+ -+ /* Can't hold gross lock when calling yaffs_get_inode() */ -+ if(current != yaffs_dev_to_lc(dev)->readdirProcess) -+ yaffs_gross_unlock(dev); -+ -+ if (obj) { -+ T(YAFFS_TRACE_OS, -+ (TSTR("yaffs_lookup found %d\n"), obj->obj_id)); -+ -+ inode = yaffs_get_inode(dir->i_sb, obj->yst_mode, 0, obj); -+ -+ if (inode) { -+ T(YAFFS_TRACE_OS, -+ (TSTR("yaffs_loookup dentry \n"))); -+/* #if 0 asserted by NCB for 2.5/6 compatability - falls through to -+ * d_add even if NULL inode */ -+#if 0 -+ /*dget(dentry); // try to solve directory bug */ -+ d_add(dentry, inode); -+ -+ /* return dentry; */ -+ return NULL; -+#endif -+ } -+ -+ } else { -+ T(YAFFS_TRACE_OS,(TSTR("yaffs_lookup not found\n"))); -+ -+ } -+ -+/* added NCB for 2.5/6 compatability - forces add even if inode is -+ * NULL which creates dentry hash */ -+ d_add(dentry, inode); -+ -+ return NULL; -+} -+ -+ -+#ifdef YAFFS_HAS_PUT_INODE -+ -+/* For now put inode is just for debugging -+ * Put inode is called when the inode **structure** is put. -+ */ -+static void yaffs_put_inode(struct inode *inode) -+{ -+ T(YAFFS_TRACE_OS, -+ (TSTR("yaffs_put_inode: ino %d, count %d\n"), (int)inode->i_ino, -+ atomic_read(&inode->i_count))); -+ -+} -+#endif -+ -+ -+static void yaffs_unstitch_obj(struct inode *inode, yaffs_obj_t *obj) -+{ -+ /* Clear the association between the inode and -+ * the yaffs_obj_t. -+ */ -+ obj->my_inode = NULL; -+ yaffs_InodeToObjectLV(inode) = NULL; -+ -+ /* If the object freeing was deferred, then the real -+ * free happens now. -+ * This should fix the inode inconsistency problem. -+ */ -+ yaffs_handle_defered_free(obj); -+} -+ -+#ifdef YAFFS_HAS_EVICT_INODE -+/* yaffs_evict_inode combines into one operation what was previously done in -+ * yaffs_clear_inode() and yaffs_delete_inode() -+ * -+ */ -+static void yaffs_evict_inode( struct inode *inode) -+{ -+ yaffs_obj_t *obj; -+ yaffs_dev_t *dev; -+ int deleteme = 0; -+ -+ obj = yaffs_InodeToObject(inode); -+ -+ T(YAFFS_TRACE_OS, -+ (TSTR("yaffs_evict_inode: ino %d, count %d %s\n"), (int)inode->i_ino, -+ atomic_read(&inode->i_count), -+ obj ? "object exists" : "null object")); -+ -+ if (!inode->i_nlink && !is_bad_inode(inode)) -+ deleteme = 1; -+ truncate_inode_pages(&inode->i_data,0); -+ end_writeback(inode); -+ -+ if(deleteme && obj){ -+ dev = obj->my_dev; -+ yaffs_gross_lock(dev); -+ yaffs_del_obj(obj); -+ yaffs_gross_unlock(dev); -+ } -+ if (obj) { -+ dev = obj->my_dev; -+ yaffs_gross_lock(dev); -+ yaffs_unstitch_obj(inode,obj); -+ yaffs_gross_unlock(dev); -+ } -+ -+ -+} -+#else -+ -+/* clear is called to tell the fs to release any per-inode data it holds. -+ * The object might still exist on disk and is just being thrown out of the cache -+ * or else the object has actually been deleted and we're being called via -+ * the chain -+ * yaffs_delete_inode() -> clear_inode()->yaffs_clear_inode() -+ */ -+ -+static void yaffs_clear_inode(struct inode *inode) -+{ -+ yaffs_obj_t *obj; -+ yaffs_dev_t *dev; -+ -+ obj = yaffs_InodeToObject(inode); -+ -+ T(YAFFS_TRACE_OS, -+ (TSTR("yaffs_clear_inode: ino %d, count %d %s\n"), (int)inode->i_ino, -+ atomic_read(&inode->i_count), -+ obj ? "object exists" : "null object")); -+ -+ if (obj) { -+ dev = obj->my_dev; -+ yaffs_gross_lock(dev); -+ yaffs_unstitch_obj(inode,obj); -+ yaffs_gross_unlock(dev); -+ } -+ -+} -+ -+/* delete is called when the link count is zero and the inode -+ * is put (ie. nobody wants to know about it anymore, time to -+ * delete the file). -+ * NB Must call clear_inode() -+ */ -+static void yaffs_delete_inode(struct inode *inode) -+{ -+ yaffs_obj_t *obj = yaffs_InodeToObject(inode); -+ yaffs_dev_t *dev; -+ -+ T(YAFFS_TRACE_OS, -+ (TSTR("yaffs_delete_inode: ino %d, count %d %s\n"), (int)inode->i_ino, -+ atomic_read(&inode->i_count), -+ obj ? "object exists" : "null object")); -+ -+ if (obj) { -+ dev = obj->my_dev; -+ yaffs_gross_lock(dev); -+ yaffs_del_obj(obj); -+ yaffs_gross_unlock(dev); -+ } -+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 13)) -+ truncate_inode_pages(&inode->i_data, 0); -+#endif -+ clear_inode(inode); -+} -+#endif -+ -+ -+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) -+static int yaffs_file_flush(struct file *file, fl_owner_t id) -+#else -+static int yaffs_file_flush(struct file *file) -+#endif -+{ -+ yaffs_obj_t *obj = yaffs_dentry_to_obj(file->f_dentry); -+ -+ yaffs_dev_t *dev = obj->my_dev; -+ -+ T(YAFFS_TRACE_OS, -+ (TSTR("yaffs_file_flush object %d (%s)\n"), obj->obj_id, -+ obj->dirty ? "dirty" : "clean")); -+ -+ yaffs_gross_lock(dev); -+ -+ yaffs_flush_file(obj, 1, 0); -+ -+ yaffs_gross_unlock(dev); -+ -+ return 0; -+} -+ -+static int yaffs_readpage_nolock(struct file *f, struct page *pg) -+{ -+ /* Lifted from jffs2 */ -+ -+ yaffs_obj_t *obj; -+ unsigned char *pg_buf; -+ int ret; -+ -+ yaffs_dev_t *dev; -+ -+ T(YAFFS_TRACE_OS, -+ (TSTR("yaffs_readpage_nolock at %08x, size %08x\n"), -+ (unsigned)(pg->index << PAGE_CACHE_SHIFT), -+ (unsigned)PAGE_CACHE_SIZE)); -+ -+ obj = yaffs_dentry_to_obj(f->f_dentry); -+ -+ dev = obj->my_dev; -+ -+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) -+ BUG_ON(!PageLocked(pg)); -+#else -+ if (!PageLocked(pg)) -+ PAGE_BUG(pg); -+#endif -+ -+ pg_buf = kmap(pg); -+ /* FIXME: Can kmap fail? */ -+ -+ yaffs_gross_lock(dev); -+ -+ ret = yaffs_file_rd(obj, pg_buf, -+ pg->index << PAGE_CACHE_SHIFT, -+ PAGE_CACHE_SIZE); -+ -+ yaffs_gross_unlock(dev); -+ -+ if (ret >= 0) -+ ret = 0; -+ -+ if (ret) { -+ ClearPageUptodate(pg); -+ SetPageError(pg); -+ } else { -+ SetPageUptodate(pg); -+ ClearPageError(pg); -+ } -+ -+ flush_dcache_page(pg); -+ kunmap(pg); -+ -+ T(YAFFS_TRACE_OS, (TSTR("yaffs_readpage_nolock done\n"))); -+ return ret; -+} -+ -+static int yaffs_readpage_unlock(struct file *f, struct page *pg) -+{ -+ int ret = yaffs_readpage_nolock(f, pg); -+ UnlockPage(pg); -+ return ret; -+} -+ -+static int yaffs_readpage(struct file *f, struct page *pg) -+{ -+ int ret; -+ -+ T(YAFFS_TRACE_OS, (TSTR("yaffs_readpage\n"))); -+ ret=yaffs_readpage_unlock(f, pg); -+ T(YAFFS_TRACE_OS, (TSTR("yaffs_readpage done\n"))); -+ return ret; -+} -+ -+/* writepage inspired by/stolen from smbfs */ -+ -+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) -+static int yaffs_writepage(struct page *page, struct writeback_control *wbc) -+#else -+static int yaffs_writepage(struct page *page) -+#endif -+{ -+ yaffs_dev_t *dev; -+ struct address_space *mapping = page->mapping; -+ struct inode *inode; -+ unsigned long end_index; -+ char *buffer; -+ yaffs_obj_t *obj; -+ int nWritten = 0; -+ unsigned n_bytes; -+ loff_t i_size; -+ -+ if (!mapping) -+ BUG(); -+ inode = mapping->host; -+ if (!inode) -+ BUG(); -+ i_size = i_size_read(inode); -+ -+ end_index = i_size >> PAGE_CACHE_SHIFT; -+ -+ if(page->index < end_index) -+ n_bytes = PAGE_CACHE_SIZE; -+ else { -+ n_bytes = i_size & (PAGE_CACHE_SIZE -1); -+ -+ if (page->index > end_index || !n_bytes) { -+ T(YAFFS_TRACE_OS, -+ (TSTR("yaffs_writepage at %08x, inode size = %08x!!!\n"), -+ (unsigned)(page->index << PAGE_CACHE_SHIFT), -+ (unsigned)inode->i_size)); -+ T(YAFFS_TRACE_OS, -+ (TSTR(" -> don't care!!\n"))); -+ -+ zero_user_segment(page,0,PAGE_CACHE_SIZE); -+ set_page_writeback(page); -+ unlock_page(page); -+ end_page_writeback(page); -+ return 0; -+ } -+ } -+ -+ if(n_bytes != PAGE_CACHE_SIZE) -+ zero_user_segment(page,n_bytes,PAGE_CACHE_SIZE); -+ -+ get_page(page); -+ -+ buffer = kmap(page); -+ -+ obj = yaffs_InodeToObject(inode); -+ dev = obj->my_dev; -+ yaffs_gross_lock(dev); -+ -+ T(YAFFS_TRACE_OS, -+ (TSTR("yaffs_writepage at %08x, size %08x\n"), -+ (unsigned)(page->index << PAGE_CACHE_SHIFT), n_bytes)); -+ T(YAFFS_TRACE_OS, -+ (TSTR("writepag0: obj = %05x, ino = %05x\n"), -+ (int)obj->variant.file_variant.file_size, (int)inode->i_size)); -+ -+ nWritten = yaffs_wr_file(obj, buffer, -+ page->index << PAGE_CACHE_SHIFT, n_bytes, 0); -+ -+ yaffs_touch_super(dev); -+ -+ T(YAFFS_TRACE_OS, -+ (TSTR("writepag1: obj = %05x, ino = %05x\n"), -+ (int)obj->variant.file_variant.file_size, (int)inode->i_size)); -+ -+ yaffs_gross_unlock(dev); -+ -+ kunmap(page); -+ set_page_writeback(page); -+ unlock_page(page); -+ end_page_writeback(page); -+ put_page(page); -+ -+ return (nWritten == n_bytes) ? 0 : -ENOSPC; -+} -+ -+ -+#if (YAFFS_USE_WRITE_BEGIN_END > 0) -+static int yaffs_write_begin(struct file *filp, struct address_space *mapping, -+ loff_t pos, unsigned len, unsigned flags, -+ struct page **pagep, void **fsdata) -+{ -+ struct page *pg = NULL; -+ pgoff_t index = pos >> PAGE_CACHE_SHIFT; -+ -+ int ret = 0; -+ int space_held = 0; -+ -+ /* Get a page */ -+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 28) -+ pg = grab_cache_page_write_begin(mapping, index, flags); -+#else -+ pg = __grab_cache_page(mapping, index); -+#endif -+ -+ *pagep = pg; -+ if (!pg) { -+ ret = -ENOMEM; -+ goto out; -+ } -+ T(YAFFS_TRACE_OS, -+ (TSTR("start yaffs_write_begin index %d(%x) uptodate %d\n"), -+ (int)index,(int)index,Page_Uptodate(pg) ? 1 : 0)); -+ -+ /* Get fs space */ -+ space_held = yaffs_hold_space(filp); -+ -+ if (!space_held) { -+ ret = -ENOSPC; -+ goto out; -+ } -+ -+ /* Update page if required */ -+ -+ if (!Page_Uptodate(pg)) -+ ret = yaffs_readpage_nolock(filp, pg); -+ -+ if (ret) -+ goto out; -+ -+ /* Happy path return */ -+ T(YAFFS_TRACE_OS, (TSTR("end yaffs_write_begin - ok\n"))); -+ -+ return 0; -+ -+out: -+ T(YAFFS_TRACE_OS, -+ (TSTR("end yaffs_write_begin fail returning %d\n"), ret)); -+ if (space_held) -+ yaffs_release_space(filp); -+ if (pg) { -+ unlock_page(pg); -+ page_cache_release(pg); -+ } -+ return ret; -+} -+ -+#else -+ -+static int yaffs_prepare_write(struct file *f, struct page *pg, -+ unsigned offset, unsigned to) -+{ -+ T(YAFFS_TRACE_OS, (TSTR("yaffs_prepair_write\n"))); -+ -+ if (!Page_Uptodate(pg)) -+ return yaffs_readpage_nolock(f, pg); -+ return 0; -+} -+#endif -+ -+#if (YAFFS_USE_WRITE_BEGIN_END > 0) -+static int yaffs_write_end(struct file *filp, struct address_space *mapping, -+ loff_t pos, unsigned len, unsigned copied, -+ struct page *pg, void *fsdadata) -+{ -+ int ret = 0; -+ void *addr, *kva; -+ uint32_t offset_into_page = pos & (PAGE_CACHE_SIZE - 1); -+ -+ kva = kmap(pg); -+ addr = kva + offset_into_page; -+ -+ T(YAFFS_TRACE_OS, -+ ("yaffs_write_end addr %p pos %x n_bytes %d\n", -+ addr,(unsigned)pos, copied)); -+ -+ ret = yaffs_file_write(filp, addr, copied, &pos); -+ -+ if (ret != copied) { -+ T(YAFFS_TRACE_OS, -+ (TSTR("yaffs_write_end not same size ret %d copied %d\n"), -+ ret, copied)); -+ SetPageError(pg); -+ } else { -+ /* Nothing */ -+ } -+ -+ kunmap(pg); -+ -+ yaffs_release_space(filp); -+ unlock_page(pg); -+ page_cache_release(pg); -+ return ret; -+} -+#else -+ -+static int yaffs_commit_write(struct file *f, struct page *pg, unsigned offset, -+ unsigned to) -+{ -+ void *addr, *kva; -+ -+ loff_t pos = (((loff_t) pg->index) << PAGE_CACHE_SHIFT) + offset; -+ int n_bytes = to - offset; -+ int nWritten; -+ -+ unsigned spos = pos; -+ unsigned saddr; -+ -+ kva = kmap(pg); -+ addr = kva + offset; -+ -+ saddr = (unsigned) addr; -+ -+ T(YAFFS_TRACE_OS, -+ (TSTR("yaffs_commit_write addr %x pos %x n_bytes %d\n"), -+ saddr, spos, n_bytes)); -+ -+ nWritten = yaffs_file_write(f, addr, n_bytes, &pos); -+ -+ if (nWritten != n_bytes) { -+ T(YAFFS_TRACE_OS, -+ (TSTR("yaffs_commit_write not same size nWritten %d n_bytes %d\n"), -+ nWritten, n_bytes)); -+ SetPageError(pg); -+ } else { -+ /* Nothing */ -+ } -+ -+ kunmap(pg); -+ -+ T(YAFFS_TRACE_OS, -+ (TSTR("yaffs_commit_write returning %d\n"), -+ nWritten == n_bytes ? 0 : nWritten)); -+ -+ return nWritten == n_bytes ? 0 : nWritten; -+} -+#endif -+ -+ -+static void yaffs_fill_inode_from_obj(struct inode *inode, yaffs_obj_t *obj) -+{ -+ if (inode && obj) { -+ -+ -+ /* Check mode against the variant type and attempt to repair if broken. */ -+ __u32 mode = obj->yst_mode; -+ switch (obj->variant_type) { -+ case YAFFS_OBJECT_TYPE_FILE: -+ if (!S_ISREG(mode)) { -+ obj->yst_mode &= ~S_IFMT; -+ obj->yst_mode |= S_IFREG; -+ } -+ -+ break; -+ case YAFFS_OBJECT_TYPE_SYMLINK: -+ if (!S_ISLNK(mode)) { -+ obj->yst_mode &= ~S_IFMT; -+ obj->yst_mode |= S_IFLNK; -+ } -+ -+ break; -+ case YAFFS_OBJECT_TYPE_DIRECTORY: -+ if (!S_ISDIR(mode)) { -+ obj->yst_mode &= ~S_IFMT; -+ obj->yst_mode |= S_IFDIR; -+ } -+ -+ break; -+ case YAFFS_OBJECT_TYPE_UNKNOWN: -+ case YAFFS_OBJECT_TYPE_HARDLINK: -+ case YAFFS_OBJECT_TYPE_SPECIAL: -+ default: -+ /* TODO? */ -+ break; -+ } -+ -+ inode->i_flags |= S_NOATIME; -+ -+ inode->i_ino = obj->obj_id; -+ inode->i_mode = obj->yst_mode; -+ inode->i_uid = obj->yst_uid; -+ inode->i_gid = obj->yst_gid; -+#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 19)) -+ inode->i_blksize = inode->i_sb->s_blocksize; -+#endif -+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) -+ -+ inode->i_rdev = old_decode_dev(obj->yst_rdev); -+ inode->i_atime.tv_sec = (time_t) (obj->yst_atime); -+ inode->i_atime.tv_nsec = 0; -+ inode->i_mtime.tv_sec = (time_t) obj->yst_mtime; -+ inode->i_mtime.tv_nsec = 0; -+ inode->i_ctime.tv_sec = (time_t) obj->yst_ctime; -+ inode->i_ctime.tv_nsec = 0; -+#else -+ inode->i_rdev = obj->yst_rdev; -+ inode->i_atime = obj->yst_atime; -+ inode->i_mtime = obj->yst_mtime; -+ inode->i_ctime = obj->yst_ctime; -+#endif -+ inode->i_size = yaffs_get_obj_length(obj); -+ inode->i_blocks = (inode->i_size + 511) >> 9; -+ -+ inode->i_nlink = yaffs_get_obj_link_count(obj); -+ -+ T(YAFFS_TRACE_OS, -+ (TSTR("yaffs_fill_inode mode %x uid %d gid %d size %d count %d\n"), -+ inode->i_mode, inode->i_uid, inode->i_gid, -+ (int)inode->i_size, atomic_read(&inode->i_count))); -+ -+ switch (obj->yst_mode & S_IFMT) { -+ default: /* fifo, device or socket */ -+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) -+ init_special_inode(inode, obj->yst_mode, -+ old_decode_dev(obj->yst_rdev)); -+#else -+ init_special_inode(inode, obj->yst_mode, -+ (dev_t) (obj->yst_rdev)); -+#endif -+ break; -+ case S_IFREG: /* file */ -+ inode->i_op = &yaffs_file_inode_operations; -+ inode->i_fop = &yaffs_file_operations; -+ inode->i_mapping->a_ops = -+ &yaffs_file_address_operations; -+ break; -+ case S_IFDIR: /* directory */ -+ inode->i_op = &yaffs_dir_inode_operations; -+ inode->i_fop = &yaffs_dir_operations; -+ break; -+ case S_IFLNK: /* symlink */ -+ inode->i_op = &yaffs_symlink_inode_operations; -+ break; -+ } -+ -+ yaffs_InodeToObjectLV(inode) = obj; -+ -+ obj->my_inode = inode; -+ -+ } else { -+ T(YAFFS_TRACE_OS, -+ (TSTR("yaffs_FileInode invalid parameters\n"))); -+ } -+ -+} -+ -+struct inode *yaffs_get_inode(struct super_block *sb, int mode, int dev, -+ yaffs_obj_t *obj) -+{ -+ struct inode *inode; -+ -+ if (!sb) { -+ T(YAFFS_TRACE_OS, -+ (TSTR("yaffs_get_inode for NULL super_block!!\n"))); -+ return NULL; -+ -+ } -+ -+ if (!obj) { -+ T(YAFFS_TRACE_OS, -+ (TSTR("yaffs_get_inode for NULL object!!\n"))); -+ return NULL; -+ -+ } -+ -+ T(YAFFS_TRACE_OS, -+ (TSTR("yaffs_get_inode for object %d\n"), obj->obj_id)); -+ -+ inode = Y_IGET(sb, obj->obj_id); -+ if (IS_ERR(inode)) -+ return NULL; -+ -+ /* NB Side effect: iget calls back to yaffs_read_inode(). */ -+ /* iget also increments the inode's i_count */ -+ /* NB You can't be holding grossLock or deadlock will happen! */ -+ -+ return inode; -+} -+ -+static ssize_t yaffs_file_write(struct file *f, const char *buf, size_t n, -+ loff_t *pos) -+{ -+ yaffs_obj_t *obj; -+ int nWritten, ipos; -+ struct inode *inode; -+ yaffs_dev_t *dev; -+ -+ obj = yaffs_dentry_to_obj(f->f_dentry); -+ -+ dev = obj->my_dev; -+ -+ yaffs_gross_lock(dev); -+ -+ inode = f->f_dentry->d_inode; -+ -+ if (!S_ISBLK(inode->i_mode) && f->f_flags & O_APPEND) -+ ipos = inode->i_size; -+ else -+ ipos = *pos; -+ -+ if (!obj) -+ T(YAFFS_TRACE_OS, -+ (TSTR("yaffs_file_write: hey obj is null!\n"))); -+ else -+ T(YAFFS_TRACE_OS, -+ (TSTR("yaffs_file_write about to write writing %u(%x) bytes" -+ "to object %d at %d(%x)\n"), -+ (unsigned) n, (unsigned) n, obj->obj_id, ipos,ipos)); -+ -+ nWritten = yaffs_wr_file(obj, buf, ipos, n, 0); -+ -+ yaffs_touch_super(dev); -+ -+ T(YAFFS_TRACE_OS, -+ (TSTR("yaffs_file_write: %d(%x) bytes written\n"), -+ (unsigned )n,(unsigned)n)); -+ -+ if (nWritten > 0) { -+ ipos += nWritten; -+ *pos = ipos; -+ if (ipos > inode->i_size) { -+ inode->i_size = ipos; -+ inode->i_blocks = (ipos + 511) >> 9; -+ -+ T(YAFFS_TRACE_OS, -+ (TSTR("yaffs_file_write size updated to %d bytes, " -+ "%d blocks\n"), -+ ipos, (int)(inode->i_blocks))); -+ } -+ -+ } -+ yaffs_gross_unlock(dev); -+ return (nWritten == 0) && (n > 0) ? -ENOSPC : nWritten; -+} -+ -+/* Space holding and freeing is done to ensure we have space available for write_begin/end */ -+/* For now we just assume few parallel writes and check against a small number. */ -+/* Todo: need to do this with a counter to handle parallel reads better */ -+ -+static ssize_t yaffs_hold_space(struct file *f) -+{ -+ yaffs_obj_t *obj; -+ yaffs_dev_t *dev; -+ -+ int n_free_chunks; -+ -+ -+ obj = yaffs_dentry_to_obj(f->f_dentry); -+ -+ dev = obj->my_dev; -+ -+ yaffs_gross_lock(dev); -+ -+ n_free_chunks = yaffs_get_n_free_chunks(dev); -+ -+ yaffs_gross_unlock(dev); -+ -+ return (n_free_chunks > 20) ? 1 : 0; -+} -+ -+static void yaffs_release_space(struct file *f) -+{ -+ yaffs_obj_t *obj; -+ yaffs_dev_t *dev; -+ -+ -+ obj = yaffs_dentry_to_obj(f->f_dentry); -+ -+ dev = obj->my_dev; -+ -+ yaffs_gross_lock(dev); -+ -+ -+ yaffs_gross_unlock(dev); -+} -+ -+ -+static loff_t yaffs_dir_llseek(struct file *file, loff_t offset, int origin) -+{ -+ long long retval; -+ -+ lock_kernel(); -+ -+ switch (origin){ -+ case 2: -+ offset += i_size_read(file->f_path.dentry->d_inode); -+ break; -+ case 1: -+ offset += file->f_pos; -+ } -+ retval = -EINVAL; -+ -+ if (offset >= 0){ -+ if (offset != file->f_pos) -+ file->f_pos = offset; -+ -+ retval = offset; -+ } -+ unlock_kernel(); -+ return retval; -+} -+ -+ -+static int yaffs_readdir(struct file *f, void *dirent, filldir_t filldir) -+{ -+ yaffs_obj_t *obj; -+ yaffs_dev_t *dev; -+ struct yaffs_SearchContext *sc; -+ struct inode *inode = f->f_dentry->d_inode; -+ unsigned long offset, curoffs; -+ yaffs_obj_t *l; -+ int retVal = 0; -+ -+ char name[YAFFS_MAX_NAME_LENGTH + 1]; -+ -+ obj = yaffs_dentry_to_obj(f->f_dentry); -+ dev = obj->my_dev; -+ -+ yaffs_gross_lock(dev); -+ -+ yaffs_dev_to_lc(dev)->readdirProcess = current; -+ -+ offset = f->f_pos; -+ -+ sc = yaffs_NewSearch(obj); -+ if(!sc){ -+ retVal = -ENOMEM; -+ goto out; -+ } -+ -+ T(YAFFS_TRACE_OS, (TSTR("yaffs_readdir: starting at %d\n"), (int)offset)); -+ -+ if (offset == 0) { -+ T(YAFFS_TRACE_OS, -+ (TSTR("yaffs_readdir: entry . ino %d \n"), -+ (int)inode->i_ino)); -+ yaffs_gross_unlock(dev); -+ if (filldir(dirent, ".", 1, offset, inode->i_ino, DT_DIR) < 0){ -+ yaffs_gross_lock(dev); -+ goto out; -+ } -+ yaffs_gross_lock(dev); -+ offset++; -+ f->f_pos++; -+ } -+ if (offset == 1) { -+ T(YAFFS_TRACE_OS, -+ (TSTR("yaffs_readdir: entry .. ino %d \n"), -+ (int)f->f_dentry->d_parent->d_inode->i_ino)); -+ yaffs_gross_unlock(dev); -+ if (filldir(dirent, "..", 2, offset, -+ f->f_dentry->d_parent->d_inode->i_ino, DT_DIR) < 0){ -+ yaffs_gross_lock(dev); -+ goto out; -+ } -+ yaffs_gross_lock(dev); -+ offset++; -+ f->f_pos++; -+ } -+ -+ curoffs = 1; -+ -+ /* If the directory has changed since the open or last call to -+ readdir, rewind to after the 2 canned entries. */ -+ if (f->f_version != inode->i_version) { -+ offset = 2; -+ f->f_pos = offset; -+ f->f_version = inode->i_version; -+ } -+ -+ while(sc->nextReturn){ -+ curoffs++; -+ l = sc->nextReturn; -+ if (curoffs >= offset) { -+ int this_inode = yaffs_get_obj_inode(l); -+ int this_type = yaffs_get_obj_type(l); -+ -+ yaffs_get_obj_name(l, name, -+ YAFFS_MAX_NAME_LENGTH + 1); -+ T(YAFFS_TRACE_OS, -+ (TSTR("yaffs_readdir: %s inode %d\n"), -+ name, yaffs_get_obj_inode(l))); -+ -+ yaffs_gross_unlock(dev); -+ -+ if (filldir(dirent, -+ name, -+ strlen(name), -+ offset, -+ this_inode, -+ this_type) < 0){ -+ yaffs_gross_lock(dev); -+ goto out; -+ } -+ -+ yaffs_gross_lock(dev); -+ -+ offset++; -+ f->f_pos++; -+ } -+ yaffs_search_advance(sc); -+ } -+ -+out: -+ yaffs_search_end(sc); -+ yaffs_dev_to_lc(dev)->readdirProcess = NULL; -+ yaffs_gross_unlock(dev); -+ -+ return retVal; -+} -+ -+ -+ -+/* -+ * File creation. Allocate an inode, and we're done.. -+ */ -+ -+#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 29) -+#define YCRED(x) x -+#else -+#define YCRED(x) (x->cred) -+#endif -+ -+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) -+static int yaffs_mknod(struct inode *dir, struct dentry *dentry, int mode, -+ dev_t rdev) -+#else -+static int yaffs_mknod(struct inode *dir, struct dentry *dentry, int mode, -+ int rdev) -+#endif -+{ -+ struct inode *inode; -+ -+ yaffs_obj_t *obj = NULL; -+ yaffs_dev_t *dev; -+ -+ yaffs_obj_t *parent = yaffs_InodeToObject(dir); -+ -+ int error = -ENOSPC; -+ uid_t uid = YCRED(current)->fsuid; -+ gid_t gid = (dir->i_mode & S_ISGID) ? dir->i_gid : YCRED(current)->fsgid; -+ -+ if ((dir->i_mode & S_ISGID) && S_ISDIR(mode)) -+ mode |= S_ISGID; -+ -+ if (parent) { -+ T(YAFFS_TRACE_OS, -+ (TSTR("yaffs_mknod: parent object %d type %d\n"), -+ parent->obj_id, parent->variant_type)); -+ } else { -+ T(YAFFS_TRACE_OS, -+ (TSTR("yaffs_mknod: could not get parent object\n"))); -+ return -EPERM; -+ } -+ -+ T(YAFFS_TRACE_OS, (TSTR("yaffs_mknod: making oject for %s, " -+ "mode %x dev %x\n"), -+ dentry->d_name.name, mode, rdev)); -+ -+ dev = parent->my_dev; -+ -+ yaffs_gross_lock(dev); -+ -+ switch (mode & S_IFMT) { -+ default: -+ /* Special (socket, fifo, device...) */ -+ T(YAFFS_TRACE_OS, (TSTR("yaffs_mknod: making special\n"))); -+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) -+ obj = yaffs_create_special(parent, dentry->d_name.name, mode, uid, -+ gid, old_encode_dev(rdev)); -+#else -+ obj = yaffs_create_special(parent, dentry->d_name.name, mode, uid, -+ gid, rdev); -+#endif -+ break; -+ case S_IFREG: /* file */ -+ T(YAFFS_TRACE_OS, (TSTR("yaffs_mknod: making file\n"))); -+ obj = yaffs_create_file(parent, dentry->d_name.name, mode, uid, -+ gid); -+ break; -+ case S_IFDIR: /* directory */ -+ T(YAFFS_TRACE_OS, -+ (TSTR("yaffs_mknod: making directory\n"))); -+ obj = yaffs_create_dir(parent, dentry->d_name.name, mode, -+ uid, gid); -+ break; -+ case S_IFLNK: /* symlink */ -+ T(YAFFS_TRACE_OS, (TSTR("yaffs_mknod: making symlink\n"))); -+ obj = NULL; /* Do we ever get here? */ -+ break; -+ } -+ -+ /* Can not call yaffs_get_inode() with gross lock held */ -+ yaffs_gross_unlock(dev); -+ -+ if (obj) { -+ inode = yaffs_get_inode(dir->i_sb, mode, rdev, obj); -+ d_instantiate(dentry, inode); -+ update_dir_time(dir); -+ T(YAFFS_TRACE_OS, -+ (TSTR("yaffs_mknod created object %d count = %d\n"), -+ obj->obj_id, atomic_read(&inode->i_count))); -+ error = 0; -+ yaffs_fill_inode_from_obj(dir,parent); -+ } else { -+ T(YAFFS_TRACE_OS, -+ (TSTR("yaffs_mknod failed making object\n"))); -+ error = -ENOMEM; -+ } -+ -+ return error; -+} -+ -+static int yaffs_mkdir(struct inode *dir, struct dentry *dentry, int mode) -+{ -+ int retVal; -+ T(YAFFS_TRACE_OS, (TSTR("yaffs_mkdir\n"))); -+ retVal = yaffs_mknod(dir, dentry, mode | S_IFDIR, 0); -+ return retVal; -+} -+ -+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) -+static int yaffs_create(struct inode *dir, struct dentry *dentry, int mode, -+ struct nameidata *n) -+#else -+static int yaffs_create(struct inode *dir, struct dentry *dentry, int mode) -+#endif -+{ -+ T(YAFFS_TRACE_OS,(TSTR("yaffs_create\n"))); -+ return yaffs_mknod(dir, dentry, mode | S_IFREG, 0); -+} -+ -+static int yaffs_unlink(struct inode *dir, struct dentry *dentry) -+{ -+ int retVal; -+ -+ yaffs_dev_t *dev; -+ yaffs_obj_t *obj; -+ -+ T(YAFFS_TRACE_OS, -+ (TSTR("yaffs_unlink %d:%s\n"), -+ (int)(dir->i_ino), -+ dentry->d_name.name)); -+ obj = yaffs_InodeToObject(dir); -+ dev = obj->my_dev; -+ -+ yaffs_gross_lock(dev); -+ -+ retVal = yaffs_unlinker(obj, dentry->d_name.name); -+ -+ if (retVal == YAFFS_OK) { -+ dentry->d_inode->i_nlink--; -+ dir->i_version++; -+ yaffs_gross_unlock(dev); -+ mark_inode_dirty(dentry->d_inode); -+ update_dir_time(dir); -+ return 0; -+ } -+ yaffs_gross_unlock(dev); -+ return -ENOTEMPTY; -+} -+ -+/* -+ * Create a link... -+ */ -+static int yaffs_link(struct dentry *old_dentry, struct inode *dir, -+ struct dentry *dentry) -+{ -+ struct inode *inode = old_dentry->d_inode; -+ yaffs_obj_t *obj = NULL; -+ yaffs_obj_t *link = NULL; -+ yaffs_dev_t *dev; -+ -+ T(YAFFS_TRACE_OS, (TSTR("yaffs_link\n"))); -+ -+ obj = yaffs_InodeToObject(inode); -+ dev = obj->my_dev; -+ -+ yaffs_gross_lock(dev); -+ -+ if (!S_ISDIR(inode->i_mode)) /* Don't link directories */ -+ link = yaffs_link_obj(yaffs_InodeToObject(dir), dentry->d_name.name, -+ obj); -+ -+ if (link) { -+ old_dentry->d_inode->i_nlink = yaffs_get_obj_link_count(obj); -+ d_instantiate(dentry, old_dentry->d_inode); -+ atomic_inc(&old_dentry->d_inode->i_count); -+ T(YAFFS_TRACE_OS, -+ (TSTR("yaffs_link link count %d i_count %d\n"), -+ old_dentry->d_inode->i_nlink, -+ atomic_read(&old_dentry->d_inode->i_count))); -+ } -+ -+ yaffs_gross_unlock(dev); -+ -+ if (link){ -+ update_dir_time(dir); -+ return 0; -+ } -+ -+ return -EPERM; -+} -+ -+static int yaffs_symlink(struct inode *dir, struct dentry *dentry, -+ const char *symname) -+{ -+ yaffs_obj_t *obj; -+ yaffs_dev_t *dev; -+ uid_t uid = YCRED(current)->fsuid; -+ gid_t gid = (dir->i_mode & S_ISGID) ? dir->i_gid : YCRED(current)->fsgid; -+ -+ T(YAFFS_TRACE_OS, (TSTR("yaffs_symlink\n"))); -+ -+ dev = yaffs_InodeToObject(dir)->my_dev; -+ yaffs_gross_lock(dev); -+ obj = yaffs_create_symlink(yaffs_InodeToObject(dir), dentry->d_name.name, -+ S_IFLNK | S_IRWXUGO, uid, gid, symname); -+ yaffs_gross_unlock(dev); -+ -+ if (obj) { -+ struct inode *inode; -+ -+ inode = yaffs_get_inode(dir->i_sb, obj->yst_mode, 0, obj); -+ d_instantiate(dentry, inode); -+ update_dir_time(dir); -+ T(YAFFS_TRACE_OS, (TSTR("symlink created OK\n"))); -+ return 0; -+ } else { -+ T(YAFFS_TRACE_OS, (TSTR("symlink not created\n"))); -+ } -+ -+ return -ENOMEM; -+} -+ -+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 34)) -+static int yaffs_sync_object(struct file *file, int datasync) -+#else -+static int yaffs_sync_object(struct file *file, struct dentry *dentry, -+ int datasync) -+#endif -+{ -+ -+ yaffs_obj_t *obj; -+ yaffs_dev_t *dev; -+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 34)) -+ struct dentry *dentry = file->f_path.dentry; -+#endif -+ -+ obj = yaffs_dentry_to_obj(dentry); -+ -+ dev = obj->my_dev; -+ -+ T(YAFFS_TRACE_OS | YAFFS_TRACE_SYNC, -+ (TSTR("yaffs_sync_object\n"))); -+ yaffs_gross_lock(dev); -+ yaffs_flush_file(obj, 1, datasync); -+ yaffs_gross_unlock(dev); -+ return 0; -+} -+ -+/* -+ * The VFS layer already does all the dentry stuff for rename. -+ * -+ * NB: POSIX says you can rename an object over an old object of the same name -+ */ -+static int yaffs_rename(struct inode *old_dir, struct dentry *old_dentry, -+ struct inode *new_dir, struct dentry *new_dentry) -+{ -+ yaffs_dev_t *dev; -+ int retVal = YAFFS_FAIL; -+ yaffs_obj_t *target; -+ -+ T(YAFFS_TRACE_OS, (TSTR("yaffs_rename\n"))); -+ dev = yaffs_InodeToObject(old_dir)->my_dev; -+ -+ yaffs_gross_lock(dev); -+ -+ /* Check if the target is an existing directory that is not empty. */ -+ target = yaffs_find_by_name(yaffs_InodeToObject(new_dir), -+ new_dentry->d_name.name); -+ -+ -+ -+ if (target && target->variant_type == YAFFS_OBJECT_TYPE_DIRECTORY && -+ !ylist_empty(&target->variant.dir_variant.children)) { -+ -+ T(YAFFS_TRACE_OS, (TSTR("target is non-empty dir\n"))); -+ -+ retVal = YAFFS_FAIL; -+ } else { -+ /* Now does unlinking internally using shadowing mechanism */ -+ T(YAFFS_TRACE_OS, (TSTR("calling yaffs_rename_obj\n"))); -+ -+ retVal = yaffs_rename_obj(yaffs_InodeToObject(old_dir), -+ old_dentry->d_name.name, -+ yaffs_InodeToObject(new_dir), -+ new_dentry->d_name.name); -+ } -+ yaffs_gross_unlock(dev); -+ -+ if (retVal == YAFFS_OK) { -+ if (target) { -+ new_dentry->d_inode->i_nlink--; -+ mark_inode_dirty(new_dentry->d_inode); -+ } -+ -+ update_dir_time(old_dir); -+ if(old_dir != new_dir) -+ update_dir_time(new_dir); -+ return 0; -+ } else { -+ return -ENOTEMPTY; -+ } -+} -+ -+static int yaffs_setattr(struct dentry *dentry, struct iattr *attr) -+{ -+ struct inode *inode = dentry->d_inode; -+ int error = 0; -+ yaffs_dev_t *dev; -+ -+ T(YAFFS_TRACE_OS, -+ (TSTR("yaffs_setattr of object %d\n"), -+ yaffs_InodeToObject(inode)->obj_id)); -+ -+ /* Fail if a requested resize >= 2GB */ -+ if (attr->ia_valid & ATTR_SIZE && -+ (attr->ia_size >> 31)) -+ error = -EINVAL; -+ -+ if (error == 0) -+ error = inode_change_ok(inode, attr); -+ if (error == 0) { -+ int result; -+ if (!error){ -+ error = yaffs_vfs_setattr(inode, attr); -+ T(YAFFS_TRACE_OS,(TSTR("inode_setattr called\n"))); -+ if (attr->ia_valid & ATTR_SIZE){ -+ yaffs_vfs_setsize(inode,attr->ia_size); -+ inode->i_blocks = (inode->i_size + 511) >> 9; -+ } -+ } -+ dev = yaffs_InodeToObject(inode)->my_dev; -+ if (attr->ia_valid & ATTR_SIZE){ -+ T(YAFFS_TRACE_OS,(TSTR("resize to %d(%x)\n"), -+ (int)(attr->ia_size),(int)(attr->ia_size))); -+ } -+ yaffs_gross_lock(dev); -+ result = yaffs_set_attribs(yaffs_InodeToObject(inode), attr); -+ if(result == YAFFS_OK) { -+ error = 0; -+ } else { -+ error = -EPERM; -+ } -+ yaffs_gross_unlock(dev); -+ -+ } -+ -+ T(YAFFS_TRACE_OS, -+ (TSTR("yaffs_setattr done returning %d\n"),error)); -+ -+ return error; -+} -+ -+#ifdef CONFIG_YAFFS_XATTR -+int yaffs_setxattr(struct dentry *dentry, const char *name, -+ const void *value, size_t size, int flags) -+{ -+ struct inode *inode = dentry->d_inode; -+ int error = 0; -+ yaffs_dev_t *dev; -+ yaffs_obj_t *obj = yaffs_InodeToObject(inode); -+ -+ T(YAFFS_TRACE_OS, -+ (TSTR("yaffs_setxattr of object %d\n"), -+ obj->obj_id)); -+ -+ -+ if (error == 0) { -+ int result; -+ dev = obj->my_dev; -+ yaffs_gross_lock(dev); -+ result = yaffs_set_xattrib(obj, name, value, size, flags); -+ if(result == YAFFS_OK) -+ error = 0; -+ else if(result < 0) -+ error = result; -+ yaffs_gross_unlock(dev); -+ -+ } -+ T(YAFFS_TRACE_OS, -+ (TSTR("yaffs_setxattr done returning %d\n"),error)); -+ -+ return error; -+} -+ -+ -+ssize_t yaffs_getxattr(struct dentry *dentry, const char *name, void *buff, -+ size_t size) -+{ -+ struct inode *inode = dentry->d_inode; -+ int error = 0; -+ yaffs_dev_t *dev; -+ yaffs_obj_t *obj = yaffs_InodeToObject(inode); -+ -+ T(YAFFS_TRACE_OS, -+ (TSTR("yaffs_getxattr \"%s\" from object %d\n"), -+ name, obj->obj_id)); -+ -+ if (error == 0) { -+ dev = obj->my_dev; -+ yaffs_gross_lock(dev); -+ error = yaffs_get_xattrib(obj, name, buff, size); -+ yaffs_gross_unlock(dev); -+ -+ } -+ T(YAFFS_TRACE_OS, -+ (TSTR("yaffs_getxattr done returning %d\n"),error)); -+ -+ return error; -+} -+ -+int yaffs_removexattr(struct dentry *dentry, const char *name) -+{ -+ struct inode *inode = dentry->d_inode; -+ int error = 0; -+ yaffs_dev_t *dev; -+ yaffs_obj_t *obj = yaffs_InodeToObject(inode); -+ -+ T(YAFFS_TRACE_OS, -+ (TSTR("yaffs_removexattr of object %d\n"), -+ obj->obj_id)); -+ -+ -+ if (error == 0) { -+ int result; -+ dev = obj->my_dev; -+ yaffs_gross_lock(dev); -+ result = yaffs_remove_xattrib(obj, name); -+ if(result == YAFFS_OK) -+ error = 0; -+ else if(result < 0) -+ error = result; -+ yaffs_gross_unlock(dev); -+ -+ } -+ T(YAFFS_TRACE_OS, -+ (TSTR("yaffs_removexattr done returning %d\n"),error)); -+ -+ return error; -+} -+ -+ssize_t yaffs_listxattr(struct dentry *dentry, char *buff, size_t size) -+{ -+ struct inode *inode = dentry->d_inode; -+ int error = 0; -+ yaffs_dev_t *dev; -+ yaffs_obj_t *obj = yaffs_InodeToObject(inode); -+ -+ T(YAFFS_TRACE_OS, -+ (TSTR("yaffs_listxattr of object %d\n"), -+ obj->obj_id)); -+ -+ -+ if (error == 0) { -+ dev = obj->my_dev; -+ yaffs_gross_lock(dev); -+ error = yaffs_list_xattrib(obj, buff, size); -+ yaffs_gross_unlock(dev); -+ -+ } -+ T(YAFFS_TRACE_OS, -+ (TSTR("yaffs_listxattr done returning %d\n"),error)); -+ -+ return error; -+} -+ -+#endif -+ -+ -+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) -+static int yaffs_statfs(struct dentry *dentry, struct kstatfs *buf) -+{ -+ yaffs_dev_t *dev = yaffs_dentry_to_obj(dentry)->my_dev; -+ struct super_block *sb = dentry->d_sb; -+#elif (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) -+static int yaffs_statfs(struct super_block *sb, struct kstatfs *buf) -+{ -+ yaffs_dev_t *dev = yaffs_SuperToDevice(sb); -+#else -+static int yaffs_statfs(struct super_block *sb, struct statfs *buf) -+{ -+ yaffs_dev_t *dev = yaffs_SuperToDevice(sb); -+#endif -+ -+ T(YAFFS_TRACE_OS, (TSTR("yaffs_statfs\n"))); -+ -+ yaffs_gross_lock(dev); -+ -+ buf->f_type = YAFFS_MAGIC; -+ buf->f_bsize = sb->s_blocksize; -+ buf->f_namelen = 255; -+ -+ if (dev->data_bytes_per_chunk & (dev->data_bytes_per_chunk - 1)) { -+ /* Do this if chunk size is not a power of 2 */ -+ -+ uint64_t bytesInDev; -+ uint64_t bytesFree; -+ -+ bytesInDev = ((uint64_t)((dev->param.end_block - dev->param.start_block + 1))) * -+ ((uint64_t)(dev->param.chunks_per_block * dev->data_bytes_per_chunk)); -+ -+ do_div(bytesInDev, sb->s_blocksize); /* bytesInDev becomes the number of blocks */ -+ buf->f_blocks = bytesInDev; -+ -+ bytesFree = ((uint64_t)(yaffs_get_n_free_chunks(dev))) * -+ ((uint64_t)(dev->data_bytes_per_chunk)); -+ -+ do_div(bytesFree, sb->s_blocksize); -+ -+ buf->f_bfree = bytesFree; -+ -+ } else if (sb->s_blocksize > dev->data_bytes_per_chunk) { -+ -+ buf->f_blocks = -+ (dev->param.end_block - dev->param.start_block + 1) * -+ dev->param.chunks_per_block / -+ (sb->s_blocksize / dev->data_bytes_per_chunk); -+ buf->f_bfree = -+ yaffs_get_n_free_chunks(dev) / -+ (sb->s_blocksize / dev->data_bytes_per_chunk); -+ } else { -+ buf->f_blocks = -+ (dev->param.end_block - dev->param.start_block + 1) * -+ dev->param.chunks_per_block * -+ (dev->data_bytes_per_chunk / sb->s_blocksize); -+ -+ buf->f_bfree = -+ yaffs_get_n_free_chunks(dev) * -+ (dev->data_bytes_per_chunk / sb->s_blocksize); -+ } -+ -+ buf->f_files = 0; -+ buf->f_ffree = 0; -+ buf->f_bavail = buf->f_bfree; -+ -+ yaffs_gross_unlock(dev); -+ return 0; -+} -+ -+ -+ -+static void yaffs_flush_inodes(struct super_block *sb) -+{ -+ struct inode *iptr; -+ yaffs_obj_t *obj; -+ -+ list_for_each_entry(iptr,&sb->s_inodes, i_sb_list){ -+ obj = yaffs_InodeToObject(iptr); -+ if(obj){ -+ T(YAFFS_TRACE_OS, (TSTR("flushing obj %d\n"), -+ obj->obj_id)); -+ yaffs_flush_file(obj,1,0); -+ } -+ } -+} -+ -+ -+static void yaffs_flush_super(struct super_block *sb, int do_checkpoint) -+{ -+ yaffs_dev_t *dev = yaffs_SuperToDevice(sb); -+ if(!dev) -+ return; -+ -+ yaffs_flush_inodes(sb); -+ yaffs_update_dirty_dirs(dev); -+ yaffs_flush_whole_cache(dev); -+ if(do_checkpoint) -+ yaffs_checkpoint_save(dev); -+} -+ -+ -+static unsigned yaffs_bg_gc_urgency(yaffs_dev_t *dev) -+{ -+ unsigned erasedChunks = dev->n_erased_blocks * dev->param.chunks_per_block; -+ struct yaffs_LinuxContext *context = yaffs_dev_to_lc(dev); -+ unsigned scatteredFree = 0; /* Free chunks not in an erased block */ -+ -+ if(erasedChunks < dev->n_free_chunks) -+ scatteredFree = (dev->n_free_chunks - erasedChunks); -+ -+ if(!context->bgRunning) -+ return 0; -+ else if(scatteredFree < (dev->param.chunks_per_block * 2)) -+ return 0; -+ else if(erasedChunks > dev->n_free_chunks/2) -+ return 0; -+ else if(erasedChunks > dev->n_free_chunks/4) -+ return 1; -+ else -+ return 2; -+} -+ -+static int yaffs_do_sync_fs(struct super_block *sb, -+ int request_checkpoint) -+{ -+ -+ yaffs_dev_t *dev = yaffs_SuperToDevice(sb); -+ unsigned int oneshot_checkpoint = (yaffs_auto_checkpoint & 4); -+ unsigned gc_urgent = yaffs_bg_gc_urgency(dev); -+ int do_checkpoint; -+ -+ T(YAFFS_TRACE_OS | YAFFS_TRACE_SYNC | YAFFS_TRACE_BACKGROUND, -+ (TSTR("yaffs_do_sync_fs: gc-urgency %d %s %s%s\n"), -+ gc_urgent, -+ sb->s_dirt ? "dirty" : "clean", -+ request_checkpoint ? "checkpoint requested" : "no checkpoint", -+ oneshot_checkpoint ? " one-shot" : "" )); -+ -+ yaffs_gross_lock(dev); -+ do_checkpoint = ((request_checkpoint && !gc_urgent) || -+ oneshot_checkpoint) && -+ !dev->is_checkpointed; -+ -+ if (sb->s_dirt || do_checkpoint) { -+ yaffs_flush_super(sb, !dev->is_checkpointed && do_checkpoint); -+ sb->s_dirt = 0; -+ if(oneshot_checkpoint) -+ yaffs_auto_checkpoint &= ~4; -+ } -+ yaffs_gross_unlock(dev); -+ -+ return 0; -+} -+ -+/* -+ * yaffs background thread functions . -+ * yaffs_bg_thread_fn() the thread function -+ * yaffs_bg_start() launches the background thread. -+ * yaffs_bg_stop() cleans up the background thread. -+ * -+ * NB: -+ * The thread should only run after the yaffs is initialised -+ * The thread should be stopped before yaffs is unmounted. -+ * The thread should not do any writing while the fs is in read only. -+ */ -+ -+#ifdef YAFFS_COMPILE_BACKGROUND -+ -+void yaffs_background_waker(unsigned long data) -+{ -+ wake_up_process((struct task_struct *)data); -+} -+ -+static int yaffs_bg_thread_fn(void *data) -+{ -+ yaffs_dev_t *dev = (yaffs_dev_t *)data; -+ struct yaffs_LinuxContext *context = yaffs_dev_to_lc(dev); -+ unsigned long now = jiffies; -+ unsigned long next_dir_update = now; -+ unsigned long next_gc = now; -+ unsigned long expires; -+ unsigned int urgency; -+ -+ int gcResult; -+ struct timer_list timer; -+ -+ T(YAFFS_TRACE_BACKGROUND, -+ (TSTR("yaffs_background starting for dev %p\n"), -+ (void *)dev)); -+ -+#ifdef YAFFS_COMPILE_FREEZER -+ set_freezable(); -+#endif -+ while(context->bgRunning){ -+ T(YAFFS_TRACE_BACKGROUND, -+ (TSTR("yaffs_background\n"))); -+ -+ if(kthread_should_stop()) -+ break; -+ -+#ifdef YAFFS_COMPILE_FREEZER -+ if(try_to_freeze()) -+ continue; -+#endif -+ yaffs_gross_lock(dev); -+ -+ now = jiffies; -+ -+ if(time_after(now, next_dir_update) && yaffs_bg_enable){ -+ yaffs_update_dirty_dirs(dev); -+ next_dir_update = now + HZ; -+ } -+ -+ if(time_after(now,next_gc) && yaffs_bg_enable){ -+ if(!dev->is_checkpointed){ -+ urgency = yaffs_bg_gc_urgency(dev); -+ gcResult = yaffs_bg_gc(dev, urgency); -+ if(urgency > 1) -+ next_gc = now + HZ/20+1; -+ else if(urgency > 0) -+ next_gc = now + HZ/10+1; -+ else -+ next_gc = now + HZ * 2; -+ } else /* -+ * gc not running so set to next_dir_update -+ * to cut down on wake ups -+ */ -+ next_gc = next_dir_update; -+ } -+ yaffs_gross_unlock(dev); -+#if 1 -+ expires = next_dir_update; -+ if (time_before(next_gc,expires)) -+ expires = next_gc; -+ if(time_before(expires,now)) -+ expires = now + HZ; -+ -+ Y_INIT_TIMER(&timer); -+ timer.expires = expires+1; -+ timer.data = (unsigned long) current; -+ timer.function = yaffs_background_waker; -+ -+ set_current_state(TASK_INTERRUPTIBLE); -+ add_timer(&timer); -+ schedule(); -+ del_timer_sync(&timer); -+#else -+ msleep(10); -+#endif -+ } -+ -+ return 0; -+} -+ -+static int yaffs_bg_start(yaffs_dev_t *dev) -+{ -+ int retval = 0; -+ struct yaffs_LinuxContext *context = yaffs_dev_to_lc(dev); -+ -+ if(dev->read_only) -+ return -1; -+ -+ context->bgRunning = 1; -+ -+ context->bgThread = kthread_run(yaffs_bg_thread_fn, -+ (void *)dev,"yaffs-bg-%d",context->mount_id); -+ -+ if(IS_ERR(context->bgThread)){ -+ retval = PTR_ERR(context->bgThread); -+ context->bgThread = NULL; -+ context->bgRunning = 0; -+ } -+ return retval; -+} -+ -+static void yaffs_bg_stop(yaffs_dev_t *dev) -+{ -+ struct yaffs_LinuxContext *ctxt = yaffs_dev_to_lc(dev); -+ -+ ctxt->bgRunning = 0; -+ -+ if( ctxt->bgThread){ -+ kthread_stop(ctxt->bgThread); -+ ctxt->bgThread = NULL; -+ } -+} -+#else -+static int yaffs_bg_thread_fn(void *data) -+{ -+ return 0; -+} -+ -+static int yaffs_bg_start(yaffs_dev_t *dev) -+{ -+ return 0; -+} -+ -+static void yaffs_bg_stop(yaffs_dev_t *dev) -+{ -+} -+#endif -+ -+ -+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) -+static void yaffs_write_super(struct super_block *sb) -+#else -+static int yaffs_write_super(struct super_block *sb) -+#endif -+{ -+ unsigned request_checkpoint = (yaffs_auto_checkpoint >= 2); -+ -+ T(YAFFS_TRACE_OS | YAFFS_TRACE_SYNC | YAFFS_TRACE_BACKGROUND, -+ (TSTR("yaffs_write_super%s\n"), -+ request_checkpoint ? " checkpt" : "")); -+ -+ yaffs_do_sync_fs(sb, request_checkpoint); -+ -+#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 18)) -+ return 0; -+#endif -+} -+ -+ -+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) -+static int yaffs_sync_fs(struct super_block *sb, int wait) -+#else -+static int yaffs_sync_fs(struct super_block *sb) -+#endif -+{ -+ unsigned request_checkpoint = (yaffs_auto_checkpoint >= 1); -+ -+ T(YAFFS_TRACE_OS | YAFFS_TRACE_SYNC, -+ (TSTR("yaffs_sync_fs%s\n"), -+ request_checkpoint ? " checkpt" : "")); -+ -+ yaffs_do_sync_fs(sb, request_checkpoint); -+ -+ return 0; -+} -+ -+#ifdef YAFFS_USE_OWN_IGET -+ -+static struct inode *yaffs_iget(struct super_block *sb, unsigned long ino) -+{ -+ struct inode *inode; -+ yaffs_obj_t *obj; -+ yaffs_dev_t *dev = yaffs_SuperToDevice(sb); -+ -+ T(YAFFS_TRACE_OS, -+ (TSTR("yaffs_iget for %lu\n"), ino)); -+ -+ inode = iget_locked(sb, ino); -+ if (!inode) -+ return ERR_PTR(-ENOMEM); -+ if (!(inode->i_state & I_NEW)) -+ return inode; -+ -+ /* NB This is called as a side effect of other functions, but -+ * we had to release the lock to prevent deadlocks, so -+ * need to lock again. -+ */ -+ -+ yaffs_gross_lock(dev); -+ -+ obj = yaffs_find_by_number(dev, inode->i_ino); -+ -+ yaffs_fill_inode_from_obj(inode, obj); -+ -+ yaffs_gross_unlock(dev); -+ -+ unlock_new_inode(inode); -+ return inode; -+} -+ -+#else -+ -+static void yaffs_read_inode(struct inode *inode) -+{ -+ /* NB This is called as a side effect of other functions, but -+ * we had to release the lock to prevent deadlocks, so -+ * need to lock again. -+ */ -+ -+ yaffs_obj_t *obj; -+ yaffs_dev_t *dev = yaffs_SuperToDevice(inode->i_sb); -+ -+ T(YAFFS_TRACE_OS, -+ (TSTR("yaffs_read_inode for %d\n"), (int)inode->i_ino)); -+ -+ if(current != yaffs_dev_to_lc(dev)->readdirProcess) -+ yaffs_gross_lock(dev); -+ -+ obj = yaffs_find_by_number(dev, inode->i_ino); -+ -+ yaffs_fill_inode_from_obj(inode, obj); -+ -+ if(current != yaffs_dev_to_lc(dev)->readdirProcess) -+ yaffs_gross_unlock(dev); -+} -+ -+#endif -+ -+static YLIST_HEAD(yaffs_context_list); -+struct semaphore yaffs_context_lock; -+ -+static void yaffs_put_super(struct super_block *sb) -+{ -+ yaffs_dev_t *dev = yaffs_SuperToDevice(sb); -+ -+ T(YAFFS_TRACE_OS, (TSTR("yaffs_put_super\n"))); -+ -+ T(YAFFS_TRACE_OS | YAFFS_TRACE_BACKGROUND, -+ (TSTR("Shutting down yaffs background thread\n"))); -+ yaffs_bg_stop(dev); -+ T(YAFFS_TRACE_OS | YAFFS_TRACE_BACKGROUND, -+ (TSTR("yaffs background thread shut down\n"))); -+ -+ yaffs_gross_lock(dev); -+ -+ yaffs_flush_super(sb,1); -+ -+ if (yaffs_dev_to_lc(dev)->putSuperFunc) -+ yaffs_dev_to_lc(dev)->putSuperFunc(sb); -+ -+ -+ yaffs_deinitialise(dev); -+ -+ yaffs_gross_unlock(dev); -+ -+ down(&yaffs_context_lock); -+ ylist_del_init(&(yaffs_dev_to_lc(dev)->contextList)); -+ up(&yaffs_context_lock); -+ -+ if (yaffs_dev_to_lc(dev)->spareBuffer) { -+ YFREE(yaffs_dev_to_lc(dev)->spareBuffer); -+ yaffs_dev_to_lc(dev)->spareBuffer = NULL; -+ } -+ -+ kfree(dev); -+} -+ -+ -+static void yaffs_MTDPutSuper(struct super_block *sb) -+{ -+ struct mtd_info *mtd = yaffs_dev_to_mtd(yaffs_SuperToDevice(sb)); -+ -+ if (mtd->sync) -+ mtd->sync(mtd); -+ -+ put_mtd_device(mtd); -+} -+ -+ -+static void yaffs_touch_super(yaffs_dev_t *dev) -+{ -+ struct super_block *sb = yaffs_dev_to_lc(dev)->superBlock; -+ -+ T(YAFFS_TRACE_OS, (TSTR("yaffs_touch_super() sb = %p\n"), sb)); -+ if (sb) -+ sb->s_dirt = 1; -+} -+ -+typedef struct { -+ int inband_tags; -+ int skip_checkpoint_read; -+ int skip_checkpoint_write; -+ int no_cache; -+ int tags_ecc_on; -+ int tags_ecc_overridden; -+ int lazy_loading_enabled; -+ int lazy_loading_overridden; -+ int empty_lost_and_found; -+ int empty_lost_and_found_overridden; -+} yaffs_options; -+ -+#define MAX_OPT_LEN 30 -+static int yaffs_parse_options(yaffs_options *options, const char *options_str) -+{ -+ char cur_opt[MAX_OPT_LEN + 1]; -+ int p; -+ int error = 0; -+ -+ /* Parse through the options which is a comma seperated list */ -+ -+ while (options_str && *options_str && !error) { -+ memset(cur_opt, 0, MAX_OPT_LEN + 1); -+ p = 0; -+ -+ while(*options_str == ',') -+ options_str++; -+ -+ while (*options_str && *options_str != ',') { -+ if (p < MAX_OPT_LEN) { -+ cur_opt[p] = *options_str; -+ p++; -+ } -+ options_str++; -+ } -+ -+ if (!strcmp(cur_opt, "inband-tags")) -+ options->inband_tags = 1; -+ else if (!strcmp(cur_opt, "tags-ecc-off")){ -+ options->tags_ecc_on = 0; -+ options->tags_ecc_overridden=1; -+ } else if (!strcmp(cur_opt, "tags-ecc-on")){ -+ options->tags_ecc_on = 1; -+ options->tags_ecc_overridden = 1; -+ } else if (!strcmp(cur_opt, "lazy-loading-off")){ -+ options->lazy_loading_enabled = 0; -+ options->lazy_loading_overridden=1; -+ } else if (!strcmp(cur_opt, "lazy-loading-on")){ -+ options->lazy_loading_enabled = 1; -+ options->lazy_loading_overridden = 1; -+ } else if (!strcmp(cur_opt, "empty-lost-and-found-off")){ -+ options->empty_lost_and_found = 0; -+ options->empty_lost_and_found_overridden=1; -+ } else if (!strcmp(cur_opt, "empty-lost-and-found-on")){ -+ options->empty_lost_and_found = 1; -+ options->empty_lost_and_found_overridden=1; -+ } else if (!strcmp(cur_opt, "no-cache")) -+ options->no_cache = 1; -+ else if (!strcmp(cur_opt, "no-checkpoint-read")) -+ options->skip_checkpoint_read = 1; -+ else if (!strcmp(cur_opt, "no-checkpoint-write")) -+ options->skip_checkpoint_write = 1; -+ else if (!strcmp(cur_opt, "no-checkpoint")) { -+ options->skip_checkpoint_read = 1; -+ options->skip_checkpoint_write = 1; -+ } else { -+ printk(KERN_INFO "yaffs: Bad mount option \"%s\"\n", -+ cur_opt); -+ error = 1; -+ } -+ } -+ -+ return error; -+} -+ -+static struct super_block *yaffs_internal_read_super(int yaffs_version, -+ struct super_block *sb, -+ void *data, int silent) -+{ -+ int nBlocks; -+ struct inode *inode = NULL; -+ struct dentry *root; -+ yaffs_dev_t *dev = 0; -+ char devname_buf[BDEVNAME_SIZE + 1]; -+ struct mtd_info *mtd; -+ int err; -+ char *data_str = (char *)data; -+ struct yaffs_LinuxContext *context = NULL; -+ yaffs_param_t *param; -+ -+ int read_only = 0; -+ -+ yaffs_options options; -+ -+ unsigned mount_id; -+ int found; -+ struct yaffs_LinuxContext *context_iterator; -+ struct ylist_head *l; -+ -+ sb->s_magic = YAFFS_MAGIC; -+ sb->s_op = &yaffs_super_ops; -+ sb->s_flags |= MS_NOATIME; -+ -+ read_only =((sb->s_flags & MS_RDONLY) != 0); -+ -+ -+#ifdef YAFFS_COMPILE_EXPORTFS -+ sb->s_export_op = &yaffs_export_ops; -+#endif -+ -+ if (!sb) -+ printk(KERN_INFO "yaffs: sb is NULL\n"); -+ else if (!sb->s_dev) -+ printk(KERN_INFO "yaffs: sb->s_dev is NULL\n"); -+ else if (!yaffs_devname(sb, devname_buf)) -+ printk(KERN_INFO "yaffs: devname is NULL\n"); -+ else -+ printk(KERN_INFO "yaffs: dev is %d name is \"%s\" %s\n", -+ sb->s_dev, -+ yaffs_devname(sb, devname_buf), -+ read_only ? "ro" : "rw"); -+ -+ if (!data_str) -+ data_str = ""; -+ -+ printk(KERN_INFO "yaffs: passed flags \"%s\"\n", data_str); -+ -+ memset(&options, 0, sizeof(options)); -+ -+ if (yaffs_parse_options(&options, data_str)) { -+ /* Option parsing failed */ -+ return NULL; -+ } -+ -+ -+ sb->s_blocksize = PAGE_CACHE_SIZE; -+ sb->s_blocksize_bits = PAGE_CACHE_SHIFT; -+ -+ T(YAFFS_TRACE_OS, -+ (TSTR("yaffs_read_super: Using yaffs%d\n"), yaffs_version)); -+ T(YAFFS_TRACE_OS, -+ (TSTR("yaffs_read_super: block size %d\n"), -+ (int)(sb->s_blocksize))); -+ -+ T(YAFFS_TRACE_ALWAYS, -+ (TSTR("yaffs: Attempting MTD mount of %u.%u,\"%s\"\n"), -+ MAJOR(sb->s_dev), MINOR(sb->s_dev), -+ yaffs_devname(sb, devname_buf))); -+ -+ /* Check it's an mtd device..... */ -+ if (MAJOR(sb->s_dev) != MTD_BLOCK_MAJOR) -+ return NULL; /* This isn't an mtd device */ -+ -+ /* Get the device */ -+ mtd = get_mtd_device(NULL, MINOR(sb->s_dev)); -+ if (!mtd) { -+ T(YAFFS_TRACE_ALWAYS, -+ (TSTR("yaffs: MTD device #%u doesn't appear to exist\n"), -+ MINOR(sb->s_dev))); -+ return NULL; -+ } -+ /* Check it's NAND */ -+ if (mtd->type != MTD_NANDFLASH) { -+ T(YAFFS_TRACE_ALWAYS, -+ (TSTR("yaffs: MTD device is not NAND it's type %d\n"), -+ mtd->type)); -+ return NULL; -+ } -+ -+ T(YAFFS_TRACE_OS, (TSTR(" erase %p\n"), mtd->erase)); -+ T(YAFFS_TRACE_OS, (TSTR(" read %p\n"), mtd->read)); -+ T(YAFFS_TRACE_OS, (TSTR(" write %p\n"), mtd->write)); -+ T(YAFFS_TRACE_OS, (TSTR(" readoob %p\n"), mtd->read_oob)); -+ T(YAFFS_TRACE_OS, (TSTR(" writeoob %p\n"), mtd->write_oob)); -+ T(YAFFS_TRACE_OS, (TSTR(" block_isbad %p\n"), mtd->block_isbad)); -+ T(YAFFS_TRACE_OS, (TSTR(" block_markbad %p\n"), mtd->block_markbad)); -+ T(YAFFS_TRACE_OS, (TSTR(" %s %d\n"), WRITE_SIZE_STR, WRITE_SIZE(mtd))); -+ T(YAFFS_TRACE_OS, (TSTR(" oobsize %d\n"), mtd->oobsize)); -+ T(YAFFS_TRACE_OS, (TSTR(" erasesize %d\n"), mtd->erasesize)); -+#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 29) -+ T(YAFFS_TRACE_OS, (TSTR(" size %u\n"), mtd->size)); -+#else -+ T(YAFFS_TRACE_OS, (TSTR(" size %lld\n"), mtd->size)); -+#endif -+ -+#ifdef CONFIG_YAFFS_AUTO_YAFFS2 -+ -+ if (yaffs_version == 1 && WRITE_SIZE(mtd) >= 2048) { -+ T(YAFFS_TRACE_ALWAYS, -+ (TSTR("yaffs: auto selecting yaffs2\n"))); -+ yaffs_version = 2; -+ } -+ -+ /* Added NCB 26/5/2006 for completeness */ -+ if (yaffs_version == 2 && !options.inband_tags && WRITE_SIZE(mtd) == 512) { -+ T(YAFFS_TRACE_ALWAYS, -+ (TSTR("yaffs: auto selecting yaffs1\n"))); -+ yaffs_version = 1; -+ } -+ -+#endif -+ -+ if (yaffs_version == 2) { -+ /* Check for version 2 style functions */ -+ if (!mtd->erase || -+ !mtd->block_isbad || -+ !mtd->block_markbad || -+ !mtd->read || -+ !mtd->write || -+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) -+ !mtd->read_oob || !mtd->write_oob) { -+#else -+ !mtd->write_ecc || -+ !mtd->read_ecc || !mtd->read_oob || !mtd->write_oob) { -+#endif -+ T(YAFFS_TRACE_ALWAYS, -+ (TSTR("yaffs: MTD device does not support required " -+ "functions\n"))); -+ return NULL; -+ } -+ -+ if ((WRITE_SIZE(mtd) < YAFFS_MIN_YAFFS2_CHUNK_SIZE || -+ mtd->oobsize < YAFFS_MIN_YAFFS2_SPARE_SIZE) && -+ !options.inband_tags) { -+ T(YAFFS_TRACE_ALWAYS, -+ (TSTR("yaffs: MTD device does not have the " -+ "right page sizes\n"))); -+ return NULL; -+ } -+ } else { -+ /* Check for V1 style functions */ -+ if (!mtd->erase || -+ !mtd->read || -+ !mtd->write || -+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) -+ !mtd->read_oob || !mtd->write_oob) { -+#else -+ !mtd->write_ecc || -+ !mtd->read_ecc || !mtd->read_oob || !mtd->write_oob) { -+#endif -+ T(YAFFS_TRACE_ALWAYS, -+ (TSTR("yaffs: MTD device does not support required " -+ "functions\n"))); -+ return NULL; -+ } -+ -+ if (WRITE_SIZE(mtd) < YAFFS_BYTES_PER_CHUNK || -+ mtd->oobsize != YAFFS_BYTES_PER_SPARE) { -+ T(YAFFS_TRACE_ALWAYS, -+ (TSTR("yaffs: MTD device does not support have the " -+ "right page sizes\n"))); -+ return NULL; -+ } -+ } -+ -+ /* OK, so if we got here, we have an MTD that's NAND and looks -+ * like it has the right capabilities -+ * Set the yaffs_dev_t up for mtd -+ */ -+ -+ if (!read_only && !(mtd->flags & MTD_WRITEABLE)){ -+ read_only = 1; -+ printk(KERN_INFO "yaffs: mtd is read only, setting superblock read only"); -+ sb->s_flags |= MS_RDONLY; -+ } -+ -+ dev = kmalloc(sizeof(yaffs_dev_t), GFP_KERNEL); -+ context = kmalloc(sizeof(struct yaffs_LinuxContext),GFP_KERNEL); -+ -+ if(!dev || !context ){ -+ if(dev) -+ kfree(dev); -+ if(context) -+ kfree(context); -+ dev = NULL; -+ context = NULL; -+ } -+ -+ if (!dev) { -+ /* Deep shit could not allocate device structure */ -+ T(YAFFS_TRACE_ALWAYS, -+ (TSTR("yaffs_read_super: Failed trying to allocate " -+ "yaffs_dev_t. \n"))); -+ return NULL; -+ } -+ memset(dev, 0, sizeof(yaffs_dev_t)); -+ param = &(dev->param); -+ -+ memset(context,0,sizeof(struct yaffs_LinuxContext)); -+ dev->os_context = context; -+ YINIT_LIST_HEAD(&(context->contextList)); -+ context->dev = dev; -+ context->superBlock = sb; -+ -+ dev->read_only = read_only; -+ -+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) -+ sb->s_fs_info = dev; -+#else -+ sb->u.generic_sbp = dev; -+#endif -+ -+ dev->driver_context = mtd; -+ param->name = mtd->name; -+ -+ /* Set up the memory size parameters.... */ -+ -+ nBlocks = YCALCBLOCKS(mtd->size, (YAFFS_CHUNKS_PER_BLOCK * YAFFS_BYTES_PER_CHUNK)); -+ -+ param->start_block = 0; -+ param->end_block = nBlocks - 1; -+ param->chunks_per_block = YAFFS_CHUNKS_PER_BLOCK; -+ param->total_bytes_per_chunk = YAFFS_BYTES_PER_CHUNK; -+ param->n_reserved_blocks = 5; -+ param->n_caches = (options.no_cache) ? 0 : 10; -+ param->inband_tags = options.inband_tags; -+ -+#ifdef CONFIG_YAFFS_DISABLE_LAZY_LOAD -+ param->disable_lazy_load = 1; -+#endif -+#ifdef CONFIG_YAFFS_XATTR -+ param->enable_xattr = 1; -+#endif -+ if(options.lazy_loading_overridden) -+ param->disable_lazy_load = !options.lazy_loading_enabled; -+ -+#ifdef CONFIG_YAFFS_DISABLE_TAGS_ECC -+ param->no_tags_ecc = 1; -+#endif -+ -+#ifdef CONFIG_YAFFS_DISABLE_BACKGROUND -+#else -+ param->defered_dir_update = 1; -+#endif -+ -+ if(options.tags_ecc_overridden) -+ param->no_tags_ecc = !options.tags_ecc_on; -+ -+#ifdef CONFIG_YAFFS_EMPTY_LOST_AND_FOUND -+ param->empty_lost_n_found = 1; -+#endif -+ -+#ifdef CONFIG_YAFFS_DISABLE_BLOCK_REFRESHING -+ param->refresh_period = 0; -+#else -+ param->refresh_period = 500; -+#endif -+ -+#ifdef CONFIG_YAFFS__ALWAYS_CHECK_CHUNK_ERASED -+ param->always_check_erased = 1; -+#endif -+ -+ if(options.empty_lost_and_found_overridden) -+ param->empty_lost_n_found = options.empty_lost_and_found; -+ -+ /* ... and the functions. */ -+ if (yaffs_version == 2) { -+ param->write_chunk_tags_fn = -+ nandmtd2_WriteChunkWithTagsToNAND; -+ param->read_chunk_tags_fn = -+ nandmtd2_ReadChunkWithTagsFromNAND; -+ param->bad_block_fn = nandmtd2_MarkNANDBlockBad; -+ param->query_block_fn = nandmtd2_QueryNANDBlock; -+ yaffs_dev_to_lc(dev)->spareBuffer = YMALLOC(mtd->oobsize); -+ param->is_yaffs2 = 1; -+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) -+ param->total_bytes_per_chunk = mtd->writesize; -+ param->chunks_per_block = mtd->erasesize / mtd->writesize; -+#else -+ param->total_bytes_per_chunk = mtd->oobblock; -+ param->chunks_per_block = mtd->erasesize / mtd->oobblock; -+#endif -+ nBlocks = YCALCBLOCKS(mtd->size, mtd->erasesize); -+ -+ param->start_block = 0; -+ param->end_block = nBlocks - 1; -+ } else { -+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) -+ /* use the MTD interface in yaffs_mtdif1.c */ -+ param->write_chunk_tags_fn = -+ nandmtd1_WriteChunkWithTagsToNAND; -+ param->read_chunk_tags_fn = -+ nandmtd1_ReadChunkWithTagsFromNAND; -+ param->bad_block_fn = nandmtd1_MarkNANDBlockBad; -+ param->query_block_fn = nandmtd1_QueryNANDBlock; -+#else -+ param->write_chunk_fn = nandmtd_WriteChunkToNAND; -+ param->read_chunk_fn = nandmtd_ReadChunkFromNAND; -+#endif -+ param->is_yaffs2 = 0; -+ } -+ /* ... and common functions */ -+ param->erase_fn = nandmtd_EraseBlockInNAND; -+ param->initialise_flash_fn = nandmtd_InitialiseNAND; -+ -+ yaffs_dev_to_lc(dev)->putSuperFunc = yaffs_MTDPutSuper; -+ -+ param->sb_dirty_fn = yaffs_touch_super; -+ param->gc_control = yaffs_gc_control_callback; -+ -+ yaffs_dev_to_lc(dev)->superBlock= sb; -+ -+ -+#ifndef CONFIG_YAFFS_DOES_ECC -+ param->use_nand_ecc = 1; -+#endif -+ -+#ifdef CONFIG_YAFFS_DISABLE_WIDE_TNODES -+ param->wide_tnodes_disabled = 1; -+#endif -+ -+ param->skip_checkpt_rd = options.skip_checkpoint_read; -+ param->skip_checkpt_wr = options.skip_checkpoint_write; -+ -+ down(&yaffs_context_lock); -+ /* Get a mount id */ -+ found = 0; -+ for(mount_id=0; ! found; mount_id++){ -+ found = 1; -+ ylist_for_each(l,&yaffs_context_list){ -+ context_iterator = ylist_entry(l,struct yaffs_LinuxContext,contextList); -+ if(context_iterator->mount_id == mount_id) -+ found = 0; -+ } -+ } -+ context->mount_id = mount_id; -+ -+ ylist_add_tail(&(yaffs_dev_to_lc(dev)->contextList), &yaffs_context_list); -+ up(&yaffs_context_lock); -+ -+ /* Directory search handling...*/ -+ YINIT_LIST_HEAD(&(yaffs_dev_to_lc(dev)->searchContexts)); -+ param->remove_obj_fn = yaffs_remove_obj_callback; -+ -+ init_MUTEX(&(yaffs_dev_to_lc(dev)->grossLock)); -+ -+ yaffs_gross_lock(dev); -+ -+ err = yaffs_guts_initialise(dev); -+ -+ T(YAFFS_TRACE_OS, -+ (TSTR("yaffs_read_super: guts initialised %s\n"), -+ (err == YAFFS_OK) ? "OK" : "FAILED")); -+ -+ if(err == YAFFS_OK) -+ yaffs_bg_start(dev); -+ -+ if(!context->bgThread) -+ param->defered_dir_update = 0; -+ -+ -+ /* Release lock before yaffs_get_inode() */ -+ yaffs_gross_unlock(dev); -+ -+ /* Create root inode */ -+ if (err == YAFFS_OK) -+ inode = yaffs_get_inode(sb, S_IFDIR | 0755, 0, -+ yaffs_root(dev)); -+ -+ if (!inode) -+ return NULL; -+ -+ inode->i_op = &yaffs_dir_inode_operations; -+ inode->i_fop = &yaffs_dir_operations; -+ -+ T(YAFFS_TRACE_OS, (TSTR("yaffs_read_super: got root inode\n"))); -+ -+ root = d_alloc_root(inode); -+ -+ T(YAFFS_TRACE_OS, (TSTR("yaffs_read_super: d_alloc_root done\n"))); -+ -+ if (!root) { -+ iput(inode); -+ return NULL; -+ } -+ sb->s_root = root; -+ sb->s_dirt = !dev->is_checkpointed; -+ T(YAFFS_TRACE_ALWAYS, -+ (TSTR("yaffs_read_super: is_checkpointed %d\n"), -+ dev->is_checkpointed)); -+ -+ T(YAFFS_TRACE_OS, (TSTR("yaffs_read_super: done\n"))); -+ return sb; -+} -+ -+ -+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) -+static int yaffs_internal_read_super_mtd(struct super_block *sb, void *data, -+ int silent) -+{ -+ return yaffs_internal_read_super(1, sb, data, silent) ? 0 : -EINVAL; -+} -+ -+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) -+static int yaffs_read_super(struct file_system_type *fs, -+ int flags, const char *dev_name, -+ void *data, struct vfsmount *mnt) -+{ -+ -+ return get_sb_bdev(fs, flags, dev_name, data, -+ yaffs_internal_read_super_mtd, mnt); -+} -+#else -+static struct super_block *yaffs_read_super(struct file_system_type *fs, -+ int flags, const char *dev_name, -+ void *data) -+{ -+ -+ return get_sb_bdev(fs, flags, dev_name, data, -+ yaffs_internal_read_super_mtd); -+} -+#endif -+ -+static struct file_system_type yaffs_fs_type = { -+ .owner = THIS_MODULE, -+ .name = "yaffs", -+ .get_sb = yaffs_read_super, -+ .kill_sb = kill_block_super, -+ .fs_flags = FS_REQUIRES_DEV, -+}; -+#else -+static struct super_block *yaffs_read_super(struct super_block *sb, void *data, -+ int silent) -+{ -+ return yaffs_internal_read_super(1, sb, data, silent); -+} -+ -+static DECLARE_FSTYPE(yaffs_fs_type, "yaffs", yaffs_read_super, -+ FS_REQUIRES_DEV); -+#endif -+ -+ -+#ifdef CONFIG_YAFFS_YAFFS2 -+ -+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) -+static int yaffs2_internal_read_super_mtd(struct super_block *sb, void *data, -+ int silent) -+{ -+ return yaffs_internal_read_super(2, sb, data, silent) ? 0 : -EINVAL; -+} -+ -+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) -+static int yaffs2_read_super(struct file_system_type *fs, -+ int flags, const char *dev_name, void *data, -+ struct vfsmount *mnt) -+{ -+ return get_sb_bdev(fs, flags, dev_name, data, -+ yaffs2_internal_read_super_mtd, mnt); -+} -+#else -+static struct super_block *yaffs2_read_super(struct file_system_type *fs, -+ int flags, const char *dev_name, -+ void *data) -+{ -+ -+ return get_sb_bdev(fs, flags, dev_name, data, -+ yaffs2_internal_read_super_mtd); -+} -+#endif -+ -+static struct file_system_type yaffs2_fs_type = { -+ .owner = THIS_MODULE, -+ .name = "yaffs2", -+ .get_sb = yaffs2_read_super, -+ .kill_sb = kill_block_super, -+ .fs_flags = FS_REQUIRES_DEV, -+}; -+#else -+static struct super_block *yaffs2_read_super(struct super_block *sb, -+ void *data, int silent) -+{ -+ return yaffs_internal_read_super(2, sb, data, silent); -+} -+ -+static DECLARE_FSTYPE(yaffs2_fs_type, "yaffs2", yaffs2_read_super, -+ FS_REQUIRES_DEV); -+#endif -+ -+#endif /* CONFIG_YAFFS_YAFFS2 */ -+ -+static struct proc_dir_entry *my_proc_entry; -+static struct proc_dir_entry *debug_proc_entry; -+ -+static char *yaffs_dump_dev_part0(char *buf, yaffs_dev_t * dev) -+{ -+ buf += sprintf(buf, "start_block.......... %d\n", dev->param.start_block); -+ buf += sprintf(buf, "end_block............ %d\n", dev->param.end_block); -+ buf += sprintf(buf, "total_bytes_per_chunk %d\n", dev->param.total_bytes_per_chunk); -+ buf += sprintf(buf, "use_nand_ecc......... %d\n", dev->param.use_nand_ecc); -+ buf += sprintf(buf, "no_tags_ecc.......... %d\n", dev->param.no_tags_ecc); -+ buf += sprintf(buf, "is_yaffs2............ %d\n", dev->param.is_yaffs2); -+ buf += sprintf(buf, "inband_tags.......... %d\n", dev->param.inband_tags); -+ buf += sprintf(buf, "empty_lost_n_found... %d\n", dev->param.empty_lost_n_found); -+ buf += sprintf(buf, "disable_lazy_load.... %d\n", dev->param.disable_lazy_load); -+ buf += sprintf(buf, "refresh_period....... %d\n", dev->param.refresh_period); -+ buf += sprintf(buf, "n_caches............. %d\n", dev->param.n_caches); -+ buf += sprintf(buf, "n_reserved_blocks.... %d\n", dev->param.n_reserved_blocks); -+ buf += sprintf(buf, "always_check_erased.. %d\n", dev->param.always_check_erased); -+ -+ buf += sprintf(buf, "\n"); -+ -+ return buf; -+} -+ -+ -+static char *yaffs_dump_dev_part1(char *buf, yaffs_dev_t * dev) -+{ -+ buf += sprintf(buf, "data_bytes_per_chunk. %d\n", dev->data_bytes_per_chunk); -+ buf += sprintf(buf, "chunk_grp_bits....... %d\n", dev->chunk_grp_bits); -+ buf += sprintf(buf, "chunk_grp_size....... %d\n", dev->chunk_grp_size); -+ buf += sprintf(buf, "n_erased_blocks...... %d\n", dev->n_erased_blocks); -+ buf += sprintf(buf, "blocks_in_checkpt.... %d\n", dev->blocks_in_checkpt); -+ buf += sprintf(buf, "\n"); -+ buf += sprintf(buf, "n_tnodes............. %d\n", dev->n_tnodes); -+ buf += sprintf(buf, "n_obj................ %d\n", dev->n_obj); -+ buf += sprintf(buf, "n_free_chunks........ %d\n", dev->n_free_chunks); -+ buf += sprintf(buf, "\n"); -+ buf += sprintf(buf, "n_page_writes........ %u\n", dev->n_page_writes); -+ buf += sprintf(buf, "n_page_reads......... %u\n", dev->n_page_reads); -+ buf += sprintf(buf, "n_erasures........... %u\n", dev->n_erasures); -+ buf += sprintf(buf, "n_gc_copies.......... %u\n", dev->n_gc_copies); -+ buf += sprintf(buf, "all_gcs.............. %u\n", dev->all_gcs); -+ buf += sprintf(buf, "passive_gc_count..... %u\n", dev->passive_gc_count); -+ buf += sprintf(buf, "oldest_dirty_gc_count %u\n", dev->oldest_dirty_gc_count); -+ buf += sprintf(buf, "n_gc_blocks.......... %u\n", dev->n_gc_blocks); -+ buf += sprintf(buf, "bg_gcs............... %u\n", dev->bg_gcs); -+ buf += sprintf(buf, "n_retired_writes..... %u\n", dev->n_retired_writes); -+ buf += sprintf(buf, "nRetireBlocks........ %u\n", dev->n_retired_blocks); -+ buf += sprintf(buf, "n_ecc_fixed.......... %u\n", dev->n_ecc_fixed); -+ buf += sprintf(buf, "n_ecc_unfixed........ %u\n", dev->n_ecc_unfixed); -+ buf += sprintf(buf, "n_tags_ecc_fixed..... %u\n", dev->n_tags_ecc_fixed); -+ buf += sprintf(buf, "n_tags_ecc_unfixed... %u\n", dev->n_tags_ecc_unfixed); -+ buf += sprintf(buf, "cache_hits........... %u\n", dev->cache_hits); -+ buf += sprintf(buf, "n_deleted_files...... %u\n", dev->n_deleted_files); -+ buf += sprintf(buf, "n_unlinked_files..... %u\n", dev->n_unlinked_files); -+ buf += sprintf(buf, "refresh_count........ %u\n", dev->refresh_count); -+ buf += sprintf(buf, "n_bg_deletions....... %u\n", dev->n_bg_deletions); -+ -+ return buf; -+} -+ -+static int yaffs_proc_read(char *page, -+ char **start, -+ off_t offset, int count, int *eof, void *data) -+{ -+ struct ylist_head *item; -+ char *buf = page; -+ int step = offset; -+ int n = 0; -+ -+ /* Get proc_file_read() to step 'offset' by one on each sucessive call. -+ * We use 'offset' (*ppos) to indicate where we are in dev_list. -+ * This also assumes the user has posted a read buffer large -+ * enough to hold the complete output; but that's life in /proc. -+ */ -+ -+ *(int *)start = 1; -+ -+ /* Print header first */ -+ if (step == 0) -+ buf += sprintf(buf, "Multi-version YAFFS built:" __DATE__ " " __TIME__"\n"); -+ else if (step == 1) -+ buf += sprintf(buf,"\n"); -+ else { -+ step-=2; -+ -+ down(&yaffs_context_lock); -+ -+ /* Locate and print the Nth entry. Order N-squared but N is small. */ -+ ylist_for_each(item, &yaffs_context_list) { -+ struct yaffs_LinuxContext *dc = ylist_entry(item, struct yaffs_LinuxContext, contextList); -+ yaffs_dev_t *dev = dc->dev; -+ -+ if (n < (step & ~1)) { -+ n+=2; -+ continue; -+ } -+ if((step & 1)==0){ -+ buf += sprintf(buf, "\nDevice %d \"%s\"\n", n, dev->param.name); -+ buf = yaffs_dump_dev_part0(buf, dev); -+ } else -+ buf = yaffs_dump_dev_part1(buf, dev); -+ -+ break; -+ } -+ up(&yaffs_context_lock); -+ } -+ -+ return buf - page < count ? buf - page : count; -+} -+ -+static int yaffs_stats_proc_read(char *page, -+ char **start, -+ off_t offset, int count, int *eof, void *data) -+{ -+ struct ylist_head *item; -+ char *buf = page; -+ int n = 0; -+ -+ down(&yaffs_context_lock); -+ -+ /* Locate and print the Nth entry. Order N-squared but N is small. */ -+ ylist_for_each(item, &yaffs_context_list) { -+ struct yaffs_LinuxContext *dc = ylist_entry(item, struct yaffs_LinuxContext, contextList); -+ yaffs_dev_t *dev = dc->dev; -+ -+ int erasedChunks; -+ -+ erasedChunks = dev->n_erased_blocks * dev->param.chunks_per_block; -+ -+ buf += sprintf(buf,"%d, %d, %d, %u, %u, %u, %u\n", -+ n, dev->n_free_chunks, erasedChunks, -+ dev->bg_gcs, dev->oldest_dirty_gc_count, -+ dev->n_obj, dev->n_tnodes); -+ } -+ up(&yaffs_context_lock); -+ -+ -+ return buf - page < count ? buf - page : count; -+} -+ -+/** -+ * Set the verbosity of the warnings and error messages. -+ * -+ * Note that the names can only be a..z or _ with the current code. -+ */ -+ -+static struct { -+ char *mask_name; -+ unsigned mask_bitfield; -+} mask_flags[] = { -+ {"allocate", YAFFS_TRACE_ALLOCATE}, -+ {"always", YAFFS_TRACE_ALWAYS}, -+ {"background", YAFFS_TRACE_BACKGROUND}, -+ {"bad_blocks", YAFFS_TRACE_BAD_BLOCKS}, -+ {"buffers", YAFFS_TRACE_BUFFERS}, -+ {"bug", YAFFS_TRACE_BUG}, -+ {"checkpt", YAFFS_TRACE_CHECKPOINT}, -+ {"deletion", YAFFS_TRACE_DELETION}, -+ {"erase", YAFFS_TRACE_ERASE}, -+ {"error", YAFFS_TRACE_ERROR}, -+ {"gc_detail", YAFFS_TRACE_GC_DETAIL}, -+ {"gc", YAFFS_TRACE_GC}, -+ {"lock", YAFFS_TRACE_LOCK}, -+ {"mtd", YAFFS_TRACE_MTD}, -+ {"nandaccess", YAFFS_TRACE_NANDACCESS}, -+ {"os", YAFFS_TRACE_OS}, -+ {"scan_debug", YAFFS_TRACE_SCAN_DEBUG}, -+ {"scan", YAFFS_TRACE_SCAN}, -+ {"tracing", YAFFS_TRACE_TRACING}, -+ {"sync", YAFFS_TRACE_SYNC}, -+ {"write", YAFFS_TRACE_WRITE}, -+ -+ {"verify", YAFFS_TRACE_VERIFY}, -+ {"verify_nand", YAFFS_TRACE_VERIFY_NAND}, -+ {"verify_full", YAFFS_TRACE_VERIFY_FULL}, -+ {"verify_all", YAFFS_TRACE_VERIFY_ALL}, -+ -+ {"all", 0xffffffff}, -+ {"none", 0}, -+ {NULL, 0}, -+}; -+ -+#define MAX_MASK_NAME_LENGTH 40 -+static int yaffs_proc_write_trace_options(struct file *file, const char *buf, -+ unsigned long count, void *data) -+{ -+ unsigned rg = 0, mask_bitfield; -+ char *end; -+ char *mask_name; -+ const char *x; -+ char substring[MAX_MASK_NAME_LENGTH + 1]; -+ int i; -+ int done = 0; -+ int add, len = 0; -+ int pos = 0; -+ -+ rg = yaffs_trace_mask; -+ -+ while (!done && (pos < count)) { -+ done = 1; -+ while ((pos < count) && isspace(buf[pos])) -+ pos++; -+ -+ switch (buf[pos]) { -+ case '+': -+ case '-': -+ case '=': -+ add = buf[pos]; -+ pos++; -+ break; -+ -+ default: -+ add = ' '; -+ break; -+ } -+ mask_name = NULL; -+ -+ mask_bitfield = simple_strtoul(buf + pos, &end, 0); -+ -+ if (end > buf + pos) { -+ mask_name = "numeral"; -+ len = end - (buf + pos); -+ pos += len; -+ done = 0; -+ } else { -+ for (x = buf + pos, i = 0; -+ (*x == '_' || (*x >= 'a' && *x <= 'z')) && -+ i < MAX_MASK_NAME_LENGTH; x++, i++, pos++) -+ substring[i] = *x; -+ substring[i] = '\0'; -+ -+ for (i = 0; mask_flags[i].mask_name != NULL; i++) { -+ if (strcmp(substring, mask_flags[i].mask_name) == 0) { -+ mask_name = mask_flags[i].mask_name; -+ mask_bitfield = mask_flags[i].mask_bitfield; -+ done = 0; -+ break; -+ } -+ } -+ } -+ -+ if (mask_name != NULL) { -+ done = 0; -+ switch (add) { -+ case '-': -+ rg &= ~mask_bitfield; -+ break; -+ case '+': -+ rg |= mask_bitfield; -+ break; -+ case '=': -+ rg = mask_bitfield; -+ break; -+ default: -+ rg |= mask_bitfield; -+ break; -+ } -+ } -+ } -+ -+ yaffs_trace_mask = rg | YAFFS_TRACE_ALWAYS; -+ -+ printk(KERN_DEBUG "new trace = 0x%08X\n", yaffs_trace_mask); -+ -+ if (rg & YAFFS_TRACE_ALWAYS) { -+ for (i = 0; mask_flags[i].mask_name != NULL; i++) { -+ char flag; -+ flag = ((rg & mask_flags[i].mask_bitfield) == -+ mask_flags[i].mask_bitfield) ? '+' : '-'; -+ printk(KERN_DEBUG "%c%s\n", flag, mask_flags[i].mask_name); -+ } -+ } -+ -+ return count; -+} -+ -+ -+static int yaffs_proc_write(struct file *file, const char *buf, -+ unsigned long count, void *data) -+{ -+ return yaffs_proc_write_trace_options(file, buf, count, data); -+} -+ -+/* Stuff to handle installation of file systems */ -+struct file_system_to_install { -+ struct file_system_type *fst; -+ int installed; -+}; -+ -+static struct file_system_to_install fs_to_install[] = { -+ {&yaffs_fs_type, 0}, -+ {&yaffs2_fs_type, 0}, -+ {NULL, 0} -+}; -+ -+static int __init init_yaffs_fs(void) -+{ -+ int error = 0; -+ struct file_system_to_install *fsinst; -+ -+ T(YAFFS_TRACE_ALWAYS, -+ (TSTR("yaffs built " __DATE__ " " __TIME__ " Installing. \n"))); -+ -+#ifdef CONFIG_YAFFS_ALWAYS_CHECK_CHUNK_ERASED -+ T(YAFFS_TRACE_ALWAYS, -+ (TSTR(" \n\n\n\nYAFFS-WARNING CONFIG_YAFFS_ALWAYS_CHECK_CHUNK_ERASED selected.\n\n\n\n"))); -+#endif -+ -+ -+ -+ -+ init_MUTEX(&yaffs_context_lock); -+ -+ /* Install the proc_fs entries */ -+ my_proc_entry = create_proc_entry("yaffs", -+ S_IRUGO | S_IFREG, -+ YPROC_ROOT); -+ -+ if (my_proc_entry) { -+ my_proc_entry->write_proc = yaffs_proc_write; -+ my_proc_entry->read_proc = yaffs_proc_read; -+ my_proc_entry->data = NULL; -+ } else -+ return -ENOMEM; -+ -+ debug_proc_entry = create_proc_entry("yaffs_stats", -+ S_IRUGO | S_IFREG, -+ YPROC_ROOT); -+ -+ if (debug_proc_entry) { -+ debug_proc_entry->write_proc = NULL; -+ debug_proc_entry->read_proc = yaffs_stats_proc_read; -+ debug_proc_entry->data = NULL; -+ } else -+ return -ENOMEM; -+ -+ /* Now add the file system entries */ -+ -+ fsinst = fs_to_install; -+ -+ while (fsinst->fst && !error) { -+ error = register_filesystem(fsinst->fst); -+ if (!error) -+ fsinst->installed = 1; -+ fsinst++; -+ } -+ -+ /* Any errors? uninstall */ -+ if (error) { -+ fsinst = fs_to_install; -+ -+ while (fsinst->fst) { -+ if (fsinst->installed) { -+ unregister_filesystem(fsinst->fst); -+ fsinst->installed = 0; -+ } -+ fsinst++; -+ } -+ } -+ -+ return error; -+} -+ -+static void __exit exit_yaffs_fs(void) -+{ -+ -+ struct file_system_to_install *fsinst; -+ -+ T(YAFFS_TRACE_ALWAYS, -+ (TSTR("yaffs built " __DATE__ " " __TIME__ " removing. \n"))); -+ -+ remove_proc_entry("yaffs", YPROC_ROOT); -+ remove_proc_entry("yaffs_stats", YPROC_ROOT); -+ -+ fsinst = fs_to_install; -+ -+ while (fsinst->fst) { -+ if (fsinst->installed) { -+ unregister_filesystem(fsinst->fst); -+ fsinst->installed = 0; -+ } -+ fsinst++; -+ } -+} -+ -+module_init(init_yaffs_fs) -+module_exit(exit_yaffs_fs) -+ -+MODULE_DESCRIPTION("YAFFS2 - a NAND specific flash file system"); -+MODULE_AUTHOR("Charles Manning, Aleph One Ltd., 2002-2010"); -+MODULE_LICENSE("GPL"); ---- /dev/null -+++ b/fs/yaffs2/yaffs_yaffs1.c -@@ -0,0 +1,465 @@ -+/* -+ * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. -+ * -+ * Copyright (C) 2002-2010 Aleph One Ltd. -+ * for Toby Churchill Ltd and Brightstar Engineering -+ * -+ * Created by Charles Manning <charles@aleph1.co.uk> -+ * -+ * This program is free software; you can redistribute it and/or modify -+ * it under the terms of the GNU General Public License version 2 as -+ * published by the Free Software Foundation. -+ */ -+#include "yaffs_yaffs1.h" -+#include "yportenv.h" -+#include "yaffs_trace.h" -+#include "yaffs_bitmap.h" -+#include "yaffs_getblockinfo.h" -+#include "yaffs_nand.h" -+ -+ -+int yaffs1_scan(yaffs_dev_t *dev) -+{ -+ yaffs_ext_tags tags; -+ int blk; -+ int blockIterator; -+ int startIterator; -+ int endIterator; -+ int result; -+ -+ int chunk; -+ int c; -+ int deleted; -+ yaffs_block_state_t state; -+ yaffs_obj_t *hard_list = NULL; -+ yaffs_block_info_t *bi; -+ __u32 seq_number; -+ yaffs_obj_header *oh; -+ yaffs_obj_t *in; -+ yaffs_obj_t *parent; -+ -+ int alloc_failed = 0; -+ -+ struct yaffs_shadow_fixer_s *shadowFixerList = NULL; -+ -+ -+ __u8 *chunkData; -+ -+ -+ -+ T(YAFFS_TRACE_SCAN, -+ (TSTR("yaffs1_scan starts intstartblk %d intendblk %d..." TENDSTR), -+ dev->internal_start_block, dev->internal_end_block)); -+ -+ chunkData = yaffs_get_temp_buffer(dev, __LINE__); -+ -+ dev->seq_number = YAFFS_LOWEST_SEQUENCE_NUMBER; -+ -+ /* Scan all the blocks to determine their state */ -+ bi = dev->block_info; -+ for (blk = dev->internal_start_block; blk <= dev->internal_end_block; blk++) { -+ yaffs_clear_chunk_bits(dev, blk); -+ bi->pages_in_use = 0; -+ bi->soft_del_pages = 0; -+ -+ yaffs_query_init_block_state(dev, blk, &state, &seq_number); -+ -+ bi->block_state = state; -+ bi->seq_number = seq_number; -+ -+ if (bi->seq_number == YAFFS_SEQUENCE_BAD_BLOCK) -+ bi->block_state = state = YAFFS_BLOCK_STATE_DEAD; -+ -+ T(YAFFS_TRACE_SCAN_DEBUG, -+ (TSTR("Block scanning block %d state %d seq %d" TENDSTR), blk, -+ state, seq_number)); -+ -+ if (state == YAFFS_BLOCK_STATE_DEAD) { -+ T(YAFFS_TRACE_BAD_BLOCKS, -+ (TSTR("block %d is bad" TENDSTR), blk)); -+ } else if (state == YAFFS_BLOCK_STATE_EMPTY) { -+ T(YAFFS_TRACE_SCAN_DEBUG, -+ (TSTR("Block empty " TENDSTR))); -+ dev->n_erased_blocks++; -+ dev->n_free_chunks += dev->param.chunks_per_block; -+ } -+ bi++; -+ } -+ -+ startIterator = dev->internal_start_block; -+ endIterator = dev->internal_end_block; -+ -+ /* For each block.... */ -+ for (blockIterator = startIterator; !alloc_failed && blockIterator <= endIterator; -+ blockIterator++) { -+ -+ YYIELD(); -+ -+ YYIELD(); -+ -+ blk = blockIterator; -+ -+ bi = yaffs_get_block_info(dev, blk); -+ state = bi->block_state; -+ -+ deleted = 0; -+ -+ /* For each chunk in each block that needs scanning....*/ -+ for (c = 0; !alloc_failed && c < dev->param.chunks_per_block && -+ state == YAFFS_BLOCK_STATE_NEEDS_SCANNING; c++) { -+ /* Read the tags and decide what to do */ -+ chunk = blk * dev->param.chunks_per_block + c; -+ -+ result = yaffs_rd_chunk_tags_nand(dev, chunk, NULL, -+ &tags); -+ -+ /* Let's have a good look at this chunk... */ -+ -+ if (tags.ecc_result == YAFFS_ECC_RESULT_UNFIXED || tags.is_deleted) { -+ /* YAFFS1 only... -+ * A deleted chunk -+ */ -+ deleted++; -+ dev->n_free_chunks++; -+ /*T((" %d %d deleted\n",blk,c)); */ -+ } else if (!tags.chunk_used) { -+ /* An unassigned chunk in the block -+ * This means that either the block is empty or -+ * this is the one being allocated from -+ */ -+ -+ if (c == 0) { -+ /* We're looking at the first chunk in the block so the block is unused */ -+ state = YAFFS_BLOCK_STATE_EMPTY; -+ dev->n_erased_blocks++; -+ } else { -+ /* this is the block being allocated from */ -+ T(YAFFS_TRACE_SCAN, -+ (TSTR -+ (" Allocating from %d %d" TENDSTR), -+ blk, c)); -+ state = YAFFS_BLOCK_STATE_ALLOCATING; -+ dev->alloc_block = blk; -+ dev->alloc_page = c; -+ dev->alloc_block_finder = blk; -+ /* Set block finder here to encourage the allocator to go forth from here. */ -+ -+ } -+ -+ dev->n_free_chunks += (dev->param.chunks_per_block - c); -+ } else if (tags.chunk_id > 0) { -+ /* chunk_id > 0 so it is a data chunk... */ -+ unsigned int endpos; -+ -+ yaffs_set_chunk_bit(dev, blk, c); -+ bi->pages_in_use++; -+ -+ in = yaffs_find_or_create_by_number(dev, -+ tags. -+ obj_id, -+ YAFFS_OBJECT_TYPE_FILE); -+ /* PutChunkIntoFile checks for a clash (two data chunks with -+ * the same chunk_id). -+ */ -+ -+ if (!in) -+ alloc_failed = 1; -+ -+ if (in) { -+ if (!yaffs_put_chunk_in_file(in, tags.chunk_id, chunk, 1)) -+ alloc_failed = 1; -+ } -+ -+ endpos = -+ (tags.chunk_id - 1) * dev->data_bytes_per_chunk + -+ tags.n_bytes; -+ if (in && -+ in->variant_type == YAFFS_OBJECT_TYPE_FILE -+ && in->variant.file_variant.scanned_size < -+ endpos) { -+ in->variant.file_variant. -+ scanned_size = endpos; -+ if (!dev->param.use_header_file_size) { -+ in->variant.file_variant. -+ file_size = -+ in->variant.file_variant. -+ scanned_size; -+ } -+ -+ } -+ /* T((" %d %d data %d %d\n",blk,c,tags.obj_id,tags.chunk_id)); */ -+ } else { -+ /* chunk_id == 0, so it is an ObjectHeader. -+ * Thus, we read in the object header and make the object -+ */ -+ yaffs_set_chunk_bit(dev, blk, c); -+ bi->pages_in_use++; -+ -+ result = yaffs_rd_chunk_tags_nand(dev, chunk, -+ chunkData, -+ NULL); -+ -+ oh = (yaffs_obj_header *) chunkData; -+ -+ in = yaffs_find_by_number(dev, -+ tags.obj_id); -+ if (in && in->variant_type != oh->type) { -+ /* This should not happen, but somehow -+ * Wev'e ended up with an obj_id that has been reused but not yet -+ * deleted, and worse still it has changed type. Delete the old object. -+ */ -+ -+ yaffs_del_obj(in); -+ -+ in = 0; -+ } -+ -+ in = yaffs_find_or_create_by_number(dev, -+ tags. -+ obj_id, -+ oh->type); -+ -+ if (!in) -+ alloc_failed = 1; -+ -+ if (in && oh->shadows_obj > 0) { -+ -+ struct yaffs_shadow_fixer_s *fixer; -+ fixer = YMALLOC(sizeof(struct yaffs_shadow_fixer_s)); -+ if (fixer) { -+ fixer->next = shadowFixerList; -+ shadowFixerList = fixer; -+ fixer->obj_id = tags.obj_id; -+ fixer->shadowed_id = oh->shadows_obj; -+ T(YAFFS_TRACE_SCAN, -+ (TSTR -+ (" Shadow fixer: %d shadows %d" TENDSTR), -+ fixer->obj_id, fixer->shadowed_id)); -+ -+ } -+ -+ } -+ -+ if (in && in->valid) { -+ /* We have already filled this one. We have a duplicate and need to resolve it. */ -+ -+ unsigned existingSerial = in->serial; -+ unsigned newSerial = tags.serial_number; -+ -+ if (((existingSerial + 1) & 3) == newSerial) { -+ /* Use new one - destroy the exisiting one */ -+ yaffs_chunk_del(dev, -+ in->hdr_chunk, -+ 1, __LINE__); -+ in->valid = 0; -+ } else { -+ /* Use existing - destroy this one. */ -+ yaffs_chunk_del(dev, chunk, 1, -+ __LINE__); -+ } -+ } -+ -+ if (in && !in->valid && -+ (tags.obj_id == YAFFS_OBJECTID_ROOT || -+ tags.obj_id == YAFFS_OBJECTID_LOSTNFOUND)) { -+ /* We only load some info, don't fiddle with directory structure */ -+ in->valid = 1; -+ in->variant_type = oh->type; -+ -+ in->yst_mode = oh->yst_mode; -+#ifdef CONFIG_YAFFS_WINCE -+ in->win_atime[0] = oh->win_atime[0]; -+ in->win_ctime[0] = oh->win_ctime[0]; -+ in->win_mtime[0] = oh->win_mtime[0]; -+ in->win_atime[1] = oh->win_atime[1]; -+ in->win_ctime[1] = oh->win_ctime[1]; -+ in->win_mtime[1] = oh->win_mtime[1]; -+#else -+ in->yst_uid = oh->yst_uid; -+ in->yst_gid = oh->yst_gid; -+ in->yst_atime = oh->yst_atime; -+ in->yst_mtime = oh->yst_mtime; -+ in->yst_ctime = oh->yst_ctime; -+ in->yst_rdev = oh->yst_rdev; -+#endif -+ in->hdr_chunk = chunk; -+ in->serial = tags.serial_number; -+ -+ } else if (in && !in->valid) { -+ /* we need to load this info */ -+ -+ in->valid = 1; -+ in->variant_type = oh->type; -+ -+ in->yst_mode = oh->yst_mode; -+#ifdef CONFIG_YAFFS_WINCE -+ in->win_atime[0] = oh->win_atime[0]; -+ in->win_ctime[0] = oh->win_ctime[0]; -+ in->win_mtime[0] = oh->win_mtime[0]; -+ in->win_atime[1] = oh->win_atime[1]; -+ in->win_ctime[1] = oh->win_ctime[1]; -+ in->win_mtime[1] = oh->win_mtime[1]; -+#else -+ in->yst_uid = oh->yst_uid; -+ in->yst_gid = oh->yst_gid; -+ in->yst_atime = oh->yst_atime; -+ in->yst_mtime = oh->yst_mtime; -+ in->yst_ctime = oh->yst_ctime; -+ in->yst_rdev = oh->yst_rdev; -+#endif -+ in->hdr_chunk = chunk; -+ in->serial = tags.serial_number; -+ -+ yaffs_set_obj_name_from_oh(in, oh); -+ in->dirty = 0; -+ -+ /* directory stuff... -+ * hook up to parent -+ */ -+ -+ parent = -+ yaffs_find_or_create_by_number -+ (dev, oh->parent_obj_id, -+ YAFFS_OBJECT_TYPE_DIRECTORY); -+ if (!parent) -+ alloc_failed = 1; -+ if (parent && parent->variant_type == -+ YAFFS_OBJECT_TYPE_UNKNOWN) { -+ /* Set up as a directory */ -+ parent->variant_type = -+ YAFFS_OBJECT_TYPE_DIRECTORY; -+ YINIT_LIST_HEAD(&parent->variant. -+ dir_variant. -+ children); -+ } else if (!parent || parent->variant_type != -+ YAFFS_OBJECT_TYPE_DIRECTORY) { -+ /* Hoosterman, another problem.... -+ * We're trying to use a non-directory as a directory -+ */ -+ -+ T(YAFFS_TRACE_ERROR, -+ (TSTR -+ ("yaffs tragedy: attempting to use non-directory as a directory in scan. Put in lost+found." -+ TENDSTR))); -+ parent = dev->lost_n_found; -+ } -+ -+ yaffs_add_obj_to_dir(parent, in); -+ -+ if (0 && (parent == dev->del_dir || -+ parent == dev->unlinked_dir)) { -+ in->deleted = 1; /* If it is unlinked at start up then it wants deleting */ -+ dev->n_deleted_files++; -+ } -+ /* Note re hardlinks. -+ * Since we might scan a hardlink before its equivalent object is scanned -+ * we put them all in a list. -+ * After scanning is complete, we should have all the objects, so we run through this -+ * list and fix up all the chains. -+ */ -+ -+ switch (in->variant_type) { -+ case YAFFS_OBJECT_TYPE_UNKNOWN: -+ /* Todo got a problem */ -+ break; -+ case YAFFS_OBJECT_TYPE_FILE: -+ if (dev->param.use_header_file_size) -+ -+ in->variant.file_variant. -+ file_size = -+ oh->file_size; -+ -+ break; -+ case YAFFS_OBJECT_TYPE_HARDLINK: -+ in->variant.hardlink_variant. -+ equiv_id = -+ oh->equiv_id; -+ in->hard_links.next = -+ (struct ylist_head *) -+ hard_list; -+ hard_list = in; -+ break; -+ case YAFFS_OBJECT_TYPE_DIRECTORY: -+ /* Do nothing */ -+ break; -+ case YAFFS_OBJECT_TYPE_SPECIAL: -+ /* Do nothing */ -+ break; -+ case YAFFS_OBJECT_TYPE_SYMLINK: -+ in->variant.symlink_variant.alias = -+ yaffs_clone_str(oh->alias); -+ if (!in->variant.symlink_variant.alias) -+ alloc_failed = 1; -+ break; -+ } -+ -+ } -+ } -+ } -+ -+ if (state == YAFFS_BLOCK_STATE_NEEDS_SCANNING) { -+ /* If we got this far while scanning, then the block is fully allocated.*/ -+ state = YAFFS_BLOCK_STATE_FULL; -+ } -+ -+ if (state == YAFFS_BLOCK_STATE_ALLOCATING) { -+ /* If the block was partially allocated then treat it as fully allocated.*/ -+ state = YAFFS_BLOCK_STATE_FULL; -+ dev->alloc_block = -1; -+ } -+ -+ bi->block_state = state; -+ -+ /* Now let's see if it was dirty */ -+ if (bi->pages_in_use == 0 && -+ !bi->has_shrink_hdr && -+ bi->block_state == YAFFS_BLOCK_STATE_FULL) { -+ yaffs_block_became_dirty(dev, blk); -+ } -+ -+ } -+ -+ -+ /* Ok, we've done all the scanning. -+ * Fix up the hard link chains. -+ * We should now have scanned all the objects, now it's time to add these -+ * hardlinks. -+ */ -+ -+ yaffs_link_fixup(dev, hard_list); -+ -+ /* Fix up any shadowed objects */ -+ { -+ struct yaffs_shadow_fixer_s *fixer; -+ yaffs_obj_t *obj; -+ -+ while (shadowFixerList) { -+ fixer = shadowFixerList; -+ shadowFixerList = fixer->next; -+ /* Complete the rename transaction by deleting the shadowed object -+ * then setting the object header to unshadowed. -+ */ -+ obj = yaffs_find_by_number(dev, fixer->shadowed_id); -+ if (obj) -+ yaffs_del_obj(obj); -+ -+ obj = yaffs_find_by_number(dev, fixer->obj_id); -+ -+ if (obj) -+ yaffs_update_oh(obj, NULL, 1, 0, 0, NULL); -+ -+ YFREE(fixer); -+ } -+ } -+ -+ yaffs_release_temp_buffer(dev, chunkData, __LINE__); -+ -+ if (alloc_failed) -+ return YAFFS_FAIL; -+ -+ T(YAFFS_TRACE_SCAN, (TSTR("yaffs1_scan ends" TENDSTR))); -+ -+ -+ return YAFFS_OK; -+} -+ ---- /dev/null -+++ b/fs/yaffs2/yaffs_yaffs1.h -@@ -0,0 +1,22 @@ -+/* -+ * YAFFS: Yet another Flash File System . A NAND-flash specific file system. -+ * -+ * Copyright (C) 2002-2010 Aleph One Ltd. -+ * for Toby Churchill Ltd and Brightstar Engineering -+ * -+ * Created by Charles Manning <charles@aleph1.co.uk> -+ * -+ * This program is free software; you can redistribute it and/or modify -+ * it under the terms of the GNU Lesser General Public License version 2.1 as -+ * published by the Free Software Foundation. -+ * -+ * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL. -+ */ -+ -+#ifndef __YAFFS_YAFFS1_H__ -+#define __YAFFS_YAFFS1_H__ -+ -+#include "yaffs_guts.h" -+int yaffs1_scan(yaffs_dev_t *dev); -+ -+#endif ---- /dev/null -+++ b/fs/yaffs2/yaffs_yaffs2.c -@@ -0,0 +1,1540 @@ -+/* -+ * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. -+ * -+ * Copyright (C) 2002-2010 Aleph One Ltd. -+ * for Toby Churchill Ltd and Brightstar Engineering -+ * -+ * Created by Charles Manning <charles@aleph1.co.uk> -+ * -+ * This program is free software; you can redistribute it and/or modify -+ * it under the terms of the GNU General Public License version 2 as -+ * published by the Free Software Foundation. -+ */ -+ -+ -+#include "yaffs_guts.h" -+#include "yaffs_trace.h" -+#include "yaffs_yaffs2.h" -+#include "yaffs_checkptrw.h" -+#include "yaffs_bitmap.h" -+#include "yaffs_qsort.h" -+#include "yaffs_nand.h" -+#include "yaffs_getblockinfo.h" -+#include "yaffs_verify.h" -+ -+/* -+ * Checkpoints are really no benefit on very small partitions. -+ * -+ * To save space on small partitions don't bother with checkpoints unless -+ * the partition is at least this big. -+ */ -+#define YAFFS_CHECKPOINT_MIN_BLOCKS 60 -+ -+#define YAFFS_SMALL_HOLE_THRESHOLD 4 -+ -+ -+/* -+ * Oldest Dirty Sequence Number handling. -+ */ -+ -+/* yaffs_calc_oldest_dirty_seq() -+ * yaffs2_find_oldest_dirty_seq() -+ * Calculate the oldest dirty sequence number if we don't know it. -+ */ -+void yaffs_calc_oldest_dirty_seq(yaffs_dev_t *dev) -+{ -+ int i; -+ unsigned seq; -+ unsigned block_no = 0; -+ yaffs_block_info_t *b; -+ -+ if(!dev->param.is_yaffs2) -+ return; -+ -+ /* Find the oldest dirty sequence number. */ -+ seq = dev->seq_number + 1; -+ b = dev->block_info; -+ for (i = dev->internal_start_block; i <= dev->internal_end_block; i++) { -+ if (b->block_state == YAFFS_BLOCK_STATE_FULL && -+ (b->pages_in_use - b->soft_del_pages) < dev->param.chunks_per_block && -+ b->seq_number < seq) { -+ seq = b->seq_number; -+ block_no = i; -+ } -+ b++; -+ } -+ -+ if(block_no){ -+ dev->oldest_dirty_seq = seq; -+ dev->oldest_dirty_block = block_no; -+ } -+ -+} -+ -+ -+void yaffs2_find_oldest_dirty_seq(yaffs_dev_t *dev) -+{ -+ if(!dev->param.is_yaffs2) -+ return; -+ -+ if(!dev->oldest_dirty_seq) -+ yaffs_calc_oldest_dirty_seq(dev); -+} -+ -+/* -+ * yaffs_clear_oldest_dirty_seq() -+ * Called when a block is erased or marked bad. (ie. when its seq_number -+ * becomes invalid). If the value matches the oldest then we clear -+ * dev->oldest_dirty_seq to force its recomputation. -+ */ -+void yaffs2_clear_oldest_dirty_seq(yaffs_dev_t *dev, yaffs_block_info_t *bi) -+{ -+ -+ if(!dev->param.is_yaffs2) -+ return; -+ -+ if(!bi || bi->seq_number == dev->oldest_dirty_seq){ -+ dev->oldest_dirty_seq = 0; -+ dev->oldest_dirty_block = 0; -+ } -+} -+ -+/* -+ * yaffs2_update_oldest_dirty_seq() -+ * Update the oldest dirty sequence number whenever we dirty a block. -+ * Only do this if the oldest_dirty_seq is actually being tracked. -+ */ -+void yaffs2_update_oldest_dirty_seq(yaffs_dev_t *dev, unsigned block_no, yaffs_block_info_t *bi) -+{ -+ if(!dev->param.is_yaffs2) -+ return; -+ -+ if(dev->oldest_dirty_seq){ -+ if(dev->oldest_dirty_seq > bi->seq_number){ -+ dev->oldest_dirty_seq = bi->seq_number; -+ dev->oldest_dirty_block = block_no; -+ } -+ } -+} -+ -+int yaffs_block_ok_for_gc(yaffs_dev_t *dev, -+ yaffs_block_info_t *bi) -+{ -+ -+ if (!dev->param.is_yaffs2) -+ return 1; /* disqualification only applies to yaffs2. */ -+ -+ if (!bi->has_shrink_hdr) -+ return 1; /* can gc */ -+ -+ yaffs2_find_oldest_dirty_seq(dev); -+ -+ /* Can't do gc of this block if there are any blocks older than this one that have -+ * discarded pages. -+ */ -+ return (bi->seq_number <= dev->oldest_dirty_seq); -+} -+ -+/* -+ * yaffs2_find_refresh_block() -+ * periodically finds the oldest full block by sequence number for refreshing. -+ * Only for yaffs2. -+ */ -+__u32 yaffs2_find_refresh_block(yaffs_dev_t *dev) -+{ -+ __u32 b ; -+ -+ __u32 oldest = 0; -+ __u32 oldestSequence = 0; -+ -+ yaffs_block_info_t *bi; -+ -+ if(!dev->param.is_yaffs2) -+ return oldest; -+ -+ /* -+ * If refresh period < 10 then refreshing is disabled. -+ */ -+ if(dev->param.refresh_period < 10) -+ return oldest; -+ -+ /* -+ * Fix broken values. -+ */ -+ if(dev->refresh_skip > dev->param.refresh_period) -+ dev->refresh_skip = dev->param.refresh_period; -+ -+ if(dev->refresh_skip > 0) -+ return oldest; -+ -+ /* -+ * Refresh skip is now zero. -+ * We'll do a refresh this time around.... -+ * Update the refresh skip and find the oldest block. -+ */ -+ dev->refresh_skip = dev->param.refresh_period; -+ dev->refresh_count++; -+ bi = dev->block_info; -+ for (b = dev->internal_start_block; b <=dev->internal_end_block; b++){ -+ -+ if (bi->block_state == YAFFS_BLOCK_STATE_FULL){ -+ -+ if(oldest < 1 || -+ bi->seq_number < oldestSequence){ -+ oldest = b; -+ oldestSequence = bi->seq_number; -+ } -+ } -+ bi++; -+ } -+ -+ if (oldest > 0) { -+ T(YAFFS_TRACE_GC, -+ (TSTR("GC refresh count %d selected block %d with seq_number %d" TENDSTR), -+ dev->refresh_count, oldest, oldestSequence)); -+ } -+ -+ return oldest; -+} -+ -+int yaffs2_checkpt_required(yaffs_dev_t *dev) -+{ -+ int nblocks; -+ -+ if(!dev->param.is_yaffs2) -+ return 0; -+ -+ nblocks = dev->internal_end_block - dev->internal_start_block + 1 ; -+ -+ return !dev->param.skip_checkpt_wr && -+ !dev->read_only && -+ (nblocks >= YAFFS_CHECKPOINT_MIN_BLOCKS); -+} -+ -+int yaffs_calc_checkpt_blocks_required(yaffs_dev_t *dev) -+{ -+ int retval; -+ -+ if(!dev->param.is_yaffs2) -+ return 0; -+ -+ if (!dev->checkpoint_blocks_required && -+ yaffs2_checkpt_required(dev)){ -+ /* Not a valid value so recalculate */ -+ int n_bytes = 0; -+ int nBlocks; -+ int devBlocks = (dev->param.end_block - dev->param.start_block + 1); -+ -+ n_bytes += sizeof(yaffs_checkpt_validty_t); -+ n_bytes += sizeof(yaffs_checkpt_dev_t); -+ n_bytes += devBlocks * sizeof(yaffs_block_info_t); -+ n_bytes += devBlocks * dev->chunk_bit_stride; -+ n_bytes += (sizeof(yaffs_checkpt_obj_t) + sizeof(__u32)) * (dev->n_obj); -+ n_bytes += (dev->tnode_size + sizeof(__u32)) * (dev->n_tnodes); -+ n_bytes += sizeof(yaffs_checkpt_validty_t); -+ n_bytes += sizeof(__u32); /* checksum*/ -+ -+ /* Round up and add 2 blocks to allow for some bad blocks, so add 3 */ -+ -+ nBlocks = (n_bytes/(dev->data_bytes_per_chunk * dev->param.chunks_per_block)) + 3; -+ -+ dev->checkpoint_blocks_required = nBlocks; -+ } -+ -+ retval = dev->checkpoint_blocks_required - dev->blocks_in_checkpt; -+ if(retval < 0) -+ retval = 0; -+ return retval; -+} -+ -+/*--------------------- Checkpointing --------------------*/ -+ -+ -+static int yaffs2_wr_checkpt_validity_marker(yaffs_dev_t *dev, int head) -+{ -+ yaffs_checkpt_validty_t cp; -+ -+ memset(&cp, 0, sizeof(cp)); -+ -+ cp.struct_type = sizeof(cp); -+ cp.magic = YAFFS_MAGIC; -+ cp.version = YAFFS_CHECKPOINT_VERSION; -+ cp.head = (head) ? 1 : 0; -+ -+ return (yaffs2_checkpt_wr(dev, &cp, sizeof(cp)) == sizeof(cp)) ? -+ 1 : 0; -+} -+ -+static int yaffs2_rd_checkpt_validty_marker(yaffs_dev_t *dev, int head) -+{ -+ yaffs_checkpt_validty_t cp; -+ int ok; -+ -+ ok = (yaffs2_checkpt_rd(dev, &cp, sizeof(cp)) == sizeof(cp)); -+ -+ if (ok) -+ ok = (cp.struct_type == sizeof(cp)) && -+ (cp.magic == YAFFS_MAGIC) && -+ (cp.version == YAFFS_CHECKPOINT_VERSION) && -+ (cp.head == ((head) ? 1 : 0)); -+ return ok ? 1 : 0; -+} -+ -+static void yaffs2_dev_to_checkpt_dev(yaffs_checkpt_dev_t *cp, -+ yaffs_dev_t *dev) -+{ -+ cp->n_erased_blocks = dev->n_erased_blocks; -+ cp->alloc_block = dev->alloc_block; -+ cp->alloc_page = dev->alloc_page; -+ cp->n_free_chunks = dev->n_free_chunks; -+ -+ cp->n_deleted_files = dev->n_deleted_files; -+ cp->n_unlinked_files = dev->n_unlinked_files; -+ cp->n_bg_deletions = dev->n_bg_deletions; -+ cp->seq_number = dev->seq_number; -+ -+} -+ -+static void yaffs_checkpt_dev_to_dev(yaffs_dev_t *dev, -+ yaffs_checkpt_dev_t *cp) -+{ -+ dev->n_erased_blocks = cp->n_erased_blocks; -+ dev->alloc_block = cp->alloc_block; -+ dev->alloc_page = cp->alloc_page; -+ dev->n_free_chunks = cp->n_free_chunks; -+ -+ dev->n_deleted_files = cp->n_deleted_files; -+ dev->n_unlinked_files = cp->n_unlinked_files; -+ dev->n_bg_deletions = cp->n_bg_deletions; -+ dev->seq_number = cp->seq_number; -+} -+ -+ -+static int yaffs2_wr_checkpt_dev(yaffs_dev_t *dev) -+{ -+ yaffs_checkpt_dev_t cp; -+ __u32 n_bytes; -+ __u32 nBlocks = (dev->internal_end_block - dev->internal_start_block + 1); -+ -+ int ok; -+ -+ /* Write device runtime values*/ -+ yaffs2_dev_to_checkpt_dev(&cp, dev); -+ cp.struct_type = sizeof(cp); -+ -+ ok = (yaffs2_checkpt_wr(dev, &cp, sizeof(cp)) == sizeof(cp)); -+ -+ /* Write block info */ -+ if (ok) { -+ n_bytes = nBlocks * sizeof(yaffs_block_info_t); -+ ok = (yaffs2_checkpt_wr(dev, dev->block_info, n_bytes) == n_bytes); -+ } -+ -+ /* Write chunk bits */ -+ if (ok) { -+ n_bytes = nBlocks * dev->chunk_bit_stride; -+ ok = (yaffs2_checkpt_wr(dev, dev->chunk_bits, n_bytes) == n_bytes); -+ } -+ return ok ? 1 : 0; -+ -+} -+ -+static int yaffs2_rd_checkpt_dev(yaffs_dev_t *dev) -+{ -+ yaffs_checkpt_dev_t cp; -+ __u32 n_bytes; -+ __u32 nBlocks = (dev->internal_end_block - dev->internal_start_block + 1); -+ -+ int ok; -+ -+ ok = (yaffs2_checkpt_rd(dev, &cp, sizeof(cp)) == sizeof(cp)); -+ if (!ok) -+ return 0; -+ -+ if (cp.struct_type != sizeof(cp)) -+ return 0; -+ -+ -+ yaffs_checkpt_dev_to_dev(dev, &cp); -+ -+ n_bytes = nBlocks * sizeof(yaffs_block_info_t); -+ -+ ok = (yaffs2_checkpt_rd(dev, dev->block_info, n_bytes) == n_bytes); -+ -+ if (!ok) -+ return 0; -+ n_bytes = nBlocks * dev->chunk_bit_stride; -+ -+ ok = (yaffs2_checkpt_rd(dev, dev->chunk_bits, n_bytes) == n_bytes); -+ -+ return ok ? 1 : 0; -+} -+ -+static void yaffs2_obj_checkpt_obj(yaffs_checkpt_obj_t *cp, -+ yaffs_obj_t *obj) -+{ -+ -+ cp->obj_id = obj->obj_id; -+ cp->parent_id = (obj->parent) ? obj->parent->obj_id : 0; -+ cp->hdr_chunk = obj->hdr_chunk; -+ cp->variant_type = obj->variant_type; -+ cp->deleted = obj->deleted; -+ cp->soft_del = obj->soft_del; -+ cp->unlinked = obj->unlinked; -+ cp->fake = obj->fake; -+ cp->rename_allowed = obj->rename_allowed; -+ cp->unlink_allowed = obj->unlink_allowed; -+ cp->serial = obj->serial; -+ cp->n_data_chunks = obj->n_data_chunks; -+ -+ if (obj->variant_type == YAFFS_OBJECT_TYPE_FILE) -+ cp->size_or_equiv_obj = obj->variant.file_variant.file_size; -+ else if (obj->variant_type == YAFFS_OBJECT_TYPE_HARDLINK) -+ cp->size_or_equiv_obj = obj->variant.hardlink_variant.equiv_id; -+} -+ -+static int taffs2_checkpt_obj_to_obj(yaffs_obj_t *obj, yaffs_checkpt_obj_t *cp) -+{ -+ -+ yaffs_obj_t *parent; -+ -+ if (obj->variant_type != cp->variant_type) { -+ T(YAFFS_TRACE_ERROR, (TSTR("Checkpoint read object %d type %d " -+ TCONT("chunk %d does not match existing object type %d") -+ TENDSTR), cp->obj_id, cp->variant_type, cp->hdr_chunk, -+ obj->variant_type)); -+ return 0; -+ } -+ -+ obj->obj_id = cp->obj_id; -+ -+ if (cp->parent_id) -+ parent = yaffs_find_or_create_by_number( -+ obj->my_dev, -+ cp->parent_id, -+ YAFFS_OBJECT_TYPE_DIRECTORY); -+ else -+ parent = NULL; -+ -+ if (parent) { -+ if (parent->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) { -+ T(YAFFS_TRACE_ALWAYS, (TSTR("Checkpoint read object %d parent %d type %d" -+ TCONT(" chunk %d Parent type, %d, not directory") -+ TENDSTR), -+ cp->obj_id, cp->parent_id, cp->variant_type, -+ cp->hdr_chunk, parent->variant_type)); -+ return 0; -+ } -+ yaffs_add_obj_to_dir(parent, obj); -+ } -+ -+ obj->hdr_chunk = cp->hdr_chunk; -+ obj->variant_type = cp->variant_type; -+ obj->deleted = cp->deleted; -+ obj->soft_del = cp->soft_del; -+ obj->unlinked = cp->unlinked; -+ obj->fake = cp->fake; -+ obj->rename_allowed = cp->rename_allowed; -+ obj->unlink_allowed = cp->unlink_allowed; -+ obj->serial = cp->serial; -+ obj->n_data_chunks = cp->n_data_chunks; -+ -+ if (obj->variant_type == YAFFS_OBJECT_TYPE_FILE) -+ obj->variant.file_variant.file_size = cp->size_or_equiv_obj; -+ else if (obj->variant_type == YAFFS_OBJECT_TYPE_HARDLINK) -+ obj->variant.hardlink_variant.equiv_id = cp->size_or_equiv_obj; -+ -+ if (obj->hdr_chunk > 0) -+ obj->lazy_loaded = 1; -+ return 1; -+} -+ -+ -+ -+static int yaffs2_checkpt_tnode_worker(yaffs_obj_t *in, yaffs_tnode_t *tn, -+ __u32 level, int chunk_offset) -+{ -+ int i; -+ yaffs_dev_t *dev = in->my_dev; -+ int ok = 1; -+ -+ if (tn) { -+ if (level > 0) { -+ -+ for (i = 0; i < YAFFS_NTNODES_INTERNAL && ok; i++) { -+ if (tn->internal[i]) { -+ ok = yaffs2_checkpt_tnode_worker(in, -+ tn->internal[i], -+ level - 1, -+ (chunk_offset<<YAFFS_TNODES_INTERNAL_BITS) + i); -+ } -+ } -+ } else if (level == 0) { -+ __u32 baseOffset = chunk_offset << YAFFS_TNODES_LEVEL0_BITS; -+ ok = (yaffs2_checkpt_wr(dev, &baseOffset, sizeof(baseOffset)) == sizeof(baseOffset)); -+ if (ok) -+ ok = (yaffs2_checkpt_wr(dev, tn, dev->tnode_size) == dev->tnode_size); -+ } -+ } -+ -+ return ok; -+ -+} -+ -+static int yaffs2_wr_checkpt_tnodes(yaffs_obj_t *obj) -+{ -+ __u32 endMarker = ~0; -+ int ok = 1; -+ -+ if (obj->variant_type == YAFFS_OBJECT_TYPE_FILE) { -+ ok = yaffs2_checkpt_tnode_worker(obj, -+ obj->variant.file_variant.top, -+ obj->variant.file_variant.top_level, -+ 0); -+ if (ok) -+ ok = (yaffs2_checkpt_wr(obj->my_dev, &endMarker, sizeof(endMarker)) == -+ sizeof(endMarker)); -+ } -+ -+ return ok ? 1 : 0; -+} -+ -+static int yaffs2_rd_checkpt_tnodes(yaffs_obj_t *obj) -+{ -+ __u32 baseChunk; -+ int ok = 1; -+ yaffs_dev_t *dev = obj->my_dev; -+ yaffs_file_s *fileStructPtr = &obj->variant.file_variant; -+ yaffs_tnode_t *tn; -+ int nread = 0; -+ -+ ok = (yaffs2_checkpt_rd(dev, &baseChunk, sizeof(baseChunk)) == sizeof(baseChunk)); -+ -+ while (ok && (~baseChunk)) { -+ nread++; -+ /* Read level 0 tnode */ -+ -+ -+ tn = yaffs_get_tnode(dev); -+ if (tn){ -+ ok = (yaffs2_checkpt_rd(dev, tn, dev->tnode_size) == dev->tnode_size); -+ } else -+ ok = 0; -+ -+ if (tn && ok) -+ ok = yaffs_add_find_tnode_0(dev, -+ fileStructPtr, -+ baseChunk, -+ tn) ? 1 : 0; -+ -+ if (ok) -+ ok = (yaffs2_checkpt_rd(dev, &baseChunk, sizeof(baseChunk)) == sizeof(baseChunk)); -+ -+ } -+ -+ T(YAFFS_TRACE_CHECKPOINT, ( -+ TSTR("Checkpoint read tnodes %d records, last %d. ok %d" TENDSTR), -+ nread, baseChunk, ok)); -+ -+ return ok ? 1 : 0; -+} -+ -+ -+static int yaffs2_wr_checkpt_objs(yaffs_dev_t *dev) -+{ -+ yaffs_obj_t *obj; -+ yaffs_checkpt_obj_t cp; -+ int i; -+ int ok = 1; -+ struct ylist_head *lh; -+ -+ -+ /* Iterate through the objects in each hash entry, -+ * dumping them to the checkpointing stream. -+ */ -+ -+ for (i = 0; ok && i < YAFFS_NOBJECT_BUCKETS; i++) { -+ ylist_for_each(lh, &dev->obj_bucket[i].list) { -+ if (lh) { -+ obj = ylist_entry(lh, yaffs_obj_t, hash_link); -+ if (!obj->defered_free) { -+ yaffs2_obj_checkpt_obj(&cp, obj); -+ cp.struct_type = sizeof(cp); -+ -+ T(YAFFS_TRACE_CHECKPOINT, ( -+ TSTR("Checkpoint write object %d parent %d type %d chunk %d obj addr %p" TENDSTR), -+ cp.obj_id, cp.parent_id, cp.variant_type, cp.hdr_chunk, obj)); -+ -+ ok = (yaffs2_checkpt_wr(dev, &cp, sizeof(cp)) == sizeof(cp)); -+ -+ if (ok && obj->variant_type == YAFFS_OBJECT_TYPE_FILE) -+ ok = yaffs2_wr_checkpt_tnodes(obj); -+ } -+ } -+ } -+ } -+ -+ /* Dump end of list */ -+ memset(&cp, 0xFF, sizeof(yaffs_checkpt_obj_t)); -+ cp.struct_type = sizeof(cp); -+ -+ if (ok) -+ ok = (yaffs2_checkpt_wr(dev, &cp, sizeof(cp)) == sizeof(cp)); -+ -+ return ok ? 1 : 0; -+} -+ -+static int yaffs2_rd_checkpt_objs(yaffs_dev_t *dev) -+{ -+ yaffs_obj_t *obj; -+ yaffs_checkpt_obj_t cp; -+ int ok = 1; -+ int done = 0; -+ yaffs_obj_t *hard_list = NULL; -+ -+ while (ok && !done) { -+ ok = (yaffs2_checkpt_rd(dev, &cp, sizeof(cp)) == sizeof(cp)); -+ if (cp.struct_type != sizeof(cp)) { -+ T(YAFFS_TRACE_CHECKPOINT, (TSTR("struct size %d instead of %d ok %d"TENDSTR), -+ cp.struct_type, (int)sizeof(cp), ok)); -+ ok = 0; -+ } -+ -+ T(YAFFS_TRACE_CHECKPOINT, (TSTR("Checkpoint read object %d parent %d type %d chunk %d " TENDSTR), -+ cp.obj_id, cp.parent_id, cp.variant_type, cp.hdr_chunk)); -+ -+ if (ok && cp.obj_id == ~0) -+ done = 1; -+ else if (ok) { -+ obj = yaffs_find_or_create_by_number(dev, cp.obj_id, cp.variant_type); -+ if (obj) { -+ ok = taffs2_checkpt_obj_to_obj(obj, &cp); -+ if (!ok) -+ break; -+ if (obj->variant_type == YAFFS_OBJECT_TYPE_FILE) { -+ ok = yaffs2_rd_checkpt_tnodes(obj); -+ } else if (obj->variant_type == YAFFS_OBJECT_TYPE_HARDLINK) { -+ obj->hard_links.next = -+ (struct ylist_head *) hard_list; -+ hard_list = obj; -+ } -+ } else -+ ok = 0; -+ } -+ } -+ -+ if (ok) -+ yaffs_link_fixup(dev, hard_list); -+ -+ return ok ? 1 : 0; -+} -+ -+static int yaffs2_wr_checkpt_sum(yaffs_dev_t *dev) -+{ -+ __u32 checkpt_sum; -+ int ok; -+ -+ yaffs2_get_checkpt_sum(dev, &checkpt_sum); -+ -+ ok = (yaffs2_checkpt_wr(dev, &checkpt_sum, sizeof(checkpt_sum)) == sizeof(checkpt_sum)); -+ -+ if (!ok) -+ return 0; -+ -+ return 1; -+} -+ -+static int yaffs2_rd_checkpt_sum(yaffs_dev_t *dev) -+{ -+ __u32 checkpt_sum0; -+ __u32 checkpt_sum1; -+ int ok; -+ -+ yaffs2_get_checkpt_sum(dev, &checkpt_sum0); -+ -+ ok = (yaffs2_checkpt_rd(dev, &checkpt_sum1, sizeof(checkpt_sum1)) == sizeof(checkpt_sum1)); -+ -+ if (!ok) -+ return 0; -+ -+ if (checkpt_sum0 != checkpt_sum1) -+ return 0; -+ -+ return 1; -+} -+ -+ -+static int yaffs2_wr_checkpt_data(yaffs_dev_t *dev) -+{ -+ int ok = 1; -+ -+ if (!yaffs2_checkpt_required(dev)) { -+ T(YAFFS_TRACE_CHECKPOINT, (TSTR("skipping checkpoint write" TENDSTR))); -+ ok = 0; -+ } -+ -+ if (ok) -+ ok = yaffs2_checkpt_open(dev, 1); -+ -+ if (ok) { -+ T(YAFFS_TRACE_CHECKPOINT, (TSTR("write checkpoint validity" TENDSTR))); -+ ok = yaffs2_wr_checkpt_validity_marker(dev, 1); -+ } -+ if (ok) { -+ T(YAFFS_TRACE_CHECKPOINT, (TSTR("write checkpoint device" TENDSTR))); -+ ok = yaffs2_wr_checkpt_dev(dev); -+ } -+ if (ok) { -+ T(YAFFS_TRACE_CHECKPOINT, (TSTR("write checkpoint objects" TENDSTR))); -+ ok = yaffs2_wr_checkpt_objs(dev); -+ } -+ if (ok) { -+ T(YAFFS_TRACE_CHECKPOINT, (TSTR("write checkpoint validity" TENDSTR))); -+ ok = yaffs2_wr_checkpt_validity_marker(dev, 0); -+ } -+ -+ if (ok) -+ ok = yaffs2_wr_checkpt_sum(dev); -+ -+ if (!yaffs_checkpt_close(dev)) -+ ok = 0; -+ -+ if (ok) -+ dev->is_checkpointed = 1; -+ else -+ dev->is_checkpointed = 0; -+ -+ return dev->is_checkpointed; -+} -+ -+static int yaffs2_rd_checkpt_data(yaffs_dev_t *dev) -+{ -+ int ok = 1; -+ -+ if(!dev->param.is_yaffs2) -+ ok = 0; -+ -+ if (ok && dev->param.skip_checkpt_rd) { -+ T(YAFFS_TRACE_CHECKPOINT, (TSTR("skipping checkpoint read" TENDSTR))); -+ ok = 0; -+ } -+ -+ if (ok) -+ ok = yaffs2_checkpt_open(dev, 0); /* open for read */ -+ -+ if (ok) { -+ T(YAFFS_TRACE_CHECKPOINT, (TSTR("read checkpoint validity" TENDSTR))); -+ ok = yaffs2_rd_checkpt_validty_marker(dev, 1); -+ } -+ if (ok) { -+ T(YAFFS_TRACE_CHECKPOINT, (TSTR("read checkpoint device" TENDSTR))); -+ ok = yaffs2_rd_checkpt_dev(dev); -+ } -+ if (ok) { -+ T(YAFFS_TRACE_CHECKPOINT, (TSTR("read checkpoint objects" TENDSTR))); -+ ok = yaffs2_rd_checkpt_objs(dev); -+ } -+ if (ok) { -+ T(YAFFS_TRACE_CHECKPOINT, (TSTR("read checkpoint validity" TENDSTR))); -+ ok = yaffs2_rd_checkpt_validty_marker(dev, 0); -+ } -+ -+ if (ok) { -+ ok = yaffs2_rd_checkpt_sum(dev); -+ T(YAFFS_TRACE_CHECKPOINT, (TSTR("read checkpoint checksum %d" TENDSTR), ok)); -+ } -+ -+ if (!yaffs_checkpt_close(dev)) -+ ok = 0; -+ -+ if (ok) -+ dev->is_checkpointed = 1; -+ else -+ dev->is_checkpointed = 0; -+ -+ return ok ? 1 : 0; -+ -+} -+ -+void yaffs2_checkpt_invalidate(yaffs_dev_t *dev) -+{ -+ if (dev->is_checkpointed || -+ dev->blocks_in_checkpt > 0) { -+ dev->is_checkpointed = 0; -+ yaffs2_checkpt_invalidate_stream(dev); -+ } -+ if (dev->param.sb_dirty_fn) -+ dev->param.sb_dirty_fn(dev); -+} -+ -+ -+int yaffs_checkpoint_save(yaffs_dev_t *dev) -+{ -+ -+ T(YAFFS_TRACE_CHECKPOINT, (TSTR("save entry: is_checkpointed %d"TENDSTR), dev->is_checkpointed)); -+ -+ yaffs_verify_objects(dev); -+ yaffs_verify_blocks(dev); -+ yaffs_verify_free_chunks(dev); -+ -+ if (!dev->is_checkpointed) { -+ yaffs2_checkpt_invalidate(dev); -+ yaffs2_wr_checkpt_data(dev); -+ } -+ -+ T(YAFFS_TRACE_ALWAYS, (TSTR("save exit: is_checkpointed %d"TENDSTR), dev->is_checkpointed)); -+ -+ return dev->is_checkpointed; -+} -+ -+int yaffs2_checkpt_restore(yaffs_dev_t *dev) -+{ -+ int retval; -+ T(YAFFS_TRACE_CHECKPOINT, (TSTR("restore entry: is_checkpointed %d"TENDSTR), dev->is_checkpointed)); -+ -+ retval = yaffs2_rd_checkpt_data(dev); -+ -+ if (dev->is_checkpointed) { -+ yaffs_verify_objects(dev); -+ yaffs_verify_blocks(dev); -+ yaffs_verify_free_chunks(dev); -+ } -+ -+ T(YAFFS_TRACE_CHECKPOINT, (TSTR("restore exit: is_checkpointed %d"TENDSTR), dev->is_checkpointed)); -+ -+ return retval; -+} -+ -+int yaffs2_handle_hole(yaffs_obj_t *obj, loff_t new_size) -+{ -+ /* if newsSize > oldFileSize. -+ * We're going to be writing a hole. -+ * If the hole is small then write zeros otherwise write a start of hole marker. -+ */ -+ -+ -+ loff_t oldFileSize; -+ int increase; -+ int smallHole ; -+ int result = YAFFS_OK; -+ yaffs_dev_t *dev = NULL; -+ -+ __u8 *localBuffer = NULL; -+ -+ int smallIncreaseOk = 0; -+ -+ if(!obj) -+ return YAFFS_FAIL; -+ -+ if(obj->variant_type != YAFFS_OBJECT_TYPE_FILE) -+ return YAFFS_FAIL; -+ -+ dev = obj->my_dev; -+ -+ /* Bail out if not yaffs2 mode */ -+ if(!dev->param.is_yaffs2) -+ return YAFFS_OK; -+ -+ oldFileSize = obj->variant.file_variant.file_size; -+ -+ if (new_size <= oldFileSize) -+ return YAFFS_OK; -+ -+ increase = new_size - oldFileSize; -+ -+ if(increase < YAFFS_SMALL_HOLE_THRESHOLD * dev->data_bytes_per_chunk && -+ yaffs_check_alloc_available(dev, YAFFS_SMALL_HOLE_THRESHOLD + 1)) -+ smallHole = 1; -+ else -+ smallHole = 0; -+ -+ if(smallHole) -+ localBuffer= yaffs_get_temp_buffer(dev, __LINE__); -+ -+ if(localBuffer){ -+ /* fill hole with zero bytes */ -+ int pos = oldFileSize; -+ int thisWrite; -+ int written; -+ memset(localBuffer,0,dev->data_bytes_per_chunk); -+ smallIncreaseOk = 1; -+ -+ while(increase > 0 && smallIncreaseOk){ -+ thisWrite = increase; -+ if(thisWrite > dev->data_bytes_per_chunk) -+ thisWrite = dev->data_bytes_per_chunk; -+ written = yaffs_do_file_wr(obj,localBuffer,pos,thisWrite,0); -+ if(written == thisWrite){ -+ pos += thisWrite; -+ increase -= thisWrite; -+ } else -+ smallIncreaseOk = 0; -+ } -+ -+ yaffs_release_temp_buffer(dev,localBuffer,__LINE__); -+ -+ /* If we were out of space then reverse any chunks we've added */ -+ if(!smallIncreaseOk) -+ yaffs_resize_file_down(obj, oldFileSize); -+ } -+ -+ if (!smallIncreaseOk && -+ obj->parent && -+ obj->parent->obj_id != YAFFS_OBJECTID_UNLINKED && -+ obj->parent->obj_id != YAFFS_OBJECTID_DELETED){ -+ /* Write a hole start header with the old file size */ -+ yaffs_update_oh(obj, NULL, 0, 1, 0, NULL); -+ } -+ -+ return result; -+ -+} -+ -+ -+typedef struct { -+ int seq; -+ int block; -+} yaffs_BlockIndex; -+ -+ -+static int yaffs2_ybicmp(const void *a, const void *b) -+{ -+ register int aseq = ((yaffs_BlockIndex *)a)->seq; -+ register int bseq = ((yaffs_BlockIndex *)b)->seq; -+ register int ablock = ((yaffs_BlockIndex *)a)->block; -+ register int bblock = ((yaffs_BlockIndex *)b)->block; -+ if (aseq == bseq) -+ return ablock - bblock; -+ else -+ return aseq - bseq; -+} -+ -+int yaffs2_scan_backwards(yaffs_dev_t *dev) -+{ -+ yaffs_ext_tags tags; -+ int blk; -+ int blockIterator; -+ int startIterator; -+ int endIterator; -+ int nBlocksToScan = 0; -+ -+ int chunk; -+ int result; -+ int c; -+ int deleted; -+ yaffs_block_state_t state; -+ yaffs_obj_t *hard_list = NULL; -+ yaffs_block_info_t *bi; -+ __u32 seq_number; -+ yaffs_obj_header *oh; -+ yaffs_obj_t *in; -+ yaffs_obj_t *parent; -+ int nBlocks = dev->internal_end_block - dev->internal_start_block + 1; -+ int itsUnlinked; -+ __u8 *chunkData; -+ -+ int file_size; -+ int is_shrink; -+ int foundChunksInBlock; -+ int equiv_id; -+ int alloc_failed = 0; -+ -+ -+ yaffs_BlockIndex *blockIndex = NULL; -+ int altBlockIndex = 0; -+ -+ T(YAFFS_TRACE_SCAN, -+ (TSTR -+ ("yaffs2_scan_backwards starts intstartblk %d intendblk %d..." -+ TENDSTR), dev->internal_start_block, dev->internal_end_block)); -+ -+ -+ dev->seq_number = YAFFS_LOWEST_SEQUENCE_NUMBER; -+ -+ blockIndex = YMALLOC(nBlocks * sizeof(yaffs_BlockIndex)); -+ -+ if (!blockIndex) { -+ blockIndex = YMALLOC_ALT(nBlocks * sizeof(yaffs_BlockIndex)); -+ altBlockIndex = 1; -+ } -+ -+ if (!blockIndex) { -+ T(YAFFS_TRACE_SCAN, -+ (TSTR("yaffs2_scan_backwards() could not allocate block index!" TENDSTR))); -+ return YAFFS_FAIL; -+ } -+ -+ dev->blocks_in_checkpt = 0; -+ -+ chunkData = yaffs_get_temp_buffer(dev, __LINE__); -+ -+ /* Scan all the blocks to determine their state */ -+ bi = dev->block_info; -+ for (blk = dev->internal_start_block; blk <= dev->internal_end_block; blk++) { -+ yaffs_clear_chunk_bits(dev, blk); -+ bi->pages_in_use = 0; -+ bi->soft_del_pages = 0; -+ -+ yaffs_query_init_block_state(dev, blk, &state, &seq_number); -+ -+ bi->block_state = state; -+ bi->seq_number = seq_number; -+ -+ if (bi->seq_number == YAFFS_SEQUENCE_CHECKPOINT_DATA) -+ bi->block_state = state = YAFFS_BLOCK_STATE_CHECKPOINT; -+ if (bi->seq_number == YAFFS_SEQUENCE_BAD_BLOCK) -+ bi->block_state = state = YAFFS_BLOCK_STATE_DEAD; -+ -+ T(YAFFS_TRACE_SCAN_DEBUG, -+ (TSTR("Block scanning block %d state %d seq %d" TENDSTR), blk, -+ state, seq_number)); -+ -+ -+ if (state == YAFFS_BLOCK_STATE_CHECKPOINT) { -+ dev->blocks_in_checkpt++; -+ -+ } else if (state == YAFFS_BLOCK_STATE_DEAD) { -+ T(YAFFS_TRACE_BAD_BLOCKS, -+ (TSTR("block %d is bad" TENDSTR), blk)); -+ } else if (state == YAFFS_BLOCK_STATE_EMPTY) { -+ T(YAFFS_TRACE_SCAN_DEBUG, -+ (TSTR("Block empty " TENDSTR))); -+ dev->n_erased_blocks++; -+ dev->n_free_chunks += dev->param.chunks_per_block; -+ } else if (state == YAFFS_BLOCK_STATE_NEEDS_SCANNING) { -+ -+ /* Determine the highest sequence number */ -+ if (seq_number >= YAFFS_LOWEST_SEQUENCE_NUMBER && -+ seq_number < YAFFS_HIGHEST_SEQUENCE_NUMBER) { -+ -+ blockIndex[nBlocksToScan].seq = seq_number; -+ blockIndex[nBlocksToScan].block = blk; -+ -+ nBlocksToScan++; -+ -+ if (seq_number >= dev->seq_number) -+ dev->seq_number = seq_number; -+ } else { -+ /* TODO: Nasty sequence number! */ -+ T(YAFFS_TRACE_SCAN, -+ (TSTR -+ ("Block scanning block %d has bad sequence number %d" -+ TENDSTR), blk, seq_number)); -+ -+ } -+ } -+ bi++; -+ } -+ -+ T(YAFFS_TRACE_SCAN, -+ (TSTR("%d blocks to be sorted..." TENDSTR), nBlocksToScan)); -+ -+ -+ -+ YYIELD(); -+ -+ /* Sort the blocks by sequence number*/ -+ yaffs_qsort(blockIndex, nBlocksToScan, sizeof(yaffs_BlockIndex), yaffs2_ybicmp); -+ -+ YYIELD(); -+ -+ T(YAFFS_TRACE_SCAN, (TSTR("...done" TENDSTR))); -+ -+ /* Now scan the blocks looking at the data. */ -+ startIterator = 0; -+ endIterator = nBlocksToScan - 1; -+ T(YAFFS_TRACE_SCAN_DEBUG, -+ (TSTR("%d blocks to be scanned" TENDSTR), nBlocksToScan)); -+ -+ /* For each block.... backwards */ -+ for (blockIterator = endIterator; !alloc_failed && blockIterator >= startIterator; -+ blockIterator--) { -+ /* Cooperative multitasking! This loop can run for so -+ long that watchdog timers expire. */ -+ YYIELD(); -+ -+ /* get the block to scan in the correct order */ -+ blk = blockIndex[blockIterator].block; -+ -+ bi = yaffs_get_block_info(dev, blk); -+ -+ -+ state = bi->block_state; -+ -+ deleted = 0; -+ -+ /* For each chunk in each block that needs scanning.... */ -+ foundChunksInBlock = 0; -+ for (c = dev->param.chunks_per_block - 1; -+ !alloc_failed && c >= 0 && -+ (state == YAFFS_BLOCK_STATE_NEEDS_SCANNING || -+ state == YAFFS_BLOCK_STATE_ALLOCATING); c--) { -+ /* Scan backwards... -+ * Read the tags and decide what to do -+ */ -+ -+ chunk = blk * dev->param.chunks_per_block + c; -+ -+ result = yaffs_rd_chunk_tags_nand(dev, chunk, NULL, -+ &tags); -+ -+ /* Let's have a good look at this chunk... */ -+ -+ if (!tags.chunk_used) { -+ /* An unassigned chunk in the block. -+ * If there are used chunks after this one, then -+ * it is a chunk that was skipped due to failing the erased -+ * check. Just skip it so that it can be deleted. -+ * But, more typically, We get here when this is an unallocated -+ * chunk and his means that either the block is empty or -+ * this is the one being allocated from -+ */ -+ -+ if (foundChunksInBlock) { -+ /* This is a chunk that was skipped due to failing the erased check */ -+ } else if (c == 0) { -+ /* We're looking at the first chunk in the block so the block is unused */ -+ state = YAFFS_BLOCK_STATE_EMPTY; -+ dev->n_erased_blocks++; -+ } else { -+ if (state == YAFFS_BLOCK_STATE_NEEDS_SCANNING || -+ state == YAFFS_BLOCK_STATE_ALLOCATING) { -+ if (dev->seq_number == bi->seq_number) { -+ /* this is the block being allocated from */ -+ -+ T(YAFFS_TRACE_SCAN, -+ (TSTR -+ (" Allocating from %d %d" -+ TENDSTR), blk, c)); -+ -+ state = YAFFS_BLOCK_STATE_ALLOCATING; -+ dev->alloc_block = blk; -+ dev->alloc_page = c; -+ dev->alloc_block_finder = blk; -+ } else { -+ /* This is a partially written block that is not -+ * the current allocation block. -+ */ -+ -+ T(YAFFS_TRACE_SCAN, -+ (TSTR("Partially written block %d detected" TENDSTR), -+ blk)); -+ } -+ } -+ } -+ -+ dev->n_free_chunks++; -+ -+ } else if (tags.ecc_result == YAFFS_ECC_RESULT_UNFIXED) { -+ T(YAFFS_TRACE_SCAN, -+ (TSTR(" Unfixed ECC in chunk(%d:%d), chunk ignored"TENDSTR), -+ blk, c)); -+ -+ dev->n_free_chunks++; -+ -+ } else if (tags.obj_id > YAFFS_MAX_OBJECT_ID || -+ tags.chunk_id > YAFFS_MAX_CHUNK_ID || -+ (tags.chunk_id > 0 && tags.n_bytes > dev->data_bytes_per_chunk) || -+ tags.seq_number != bi->seq_number ) { -+ T(YAFFS_TRACE_SCAN, -+ (TSTR("Chunk (%d:%d) with bad tags:obj = %d, chunk_id = %d, n_bytes = %d, ignored"TENDSTR), -+ blk, c,tags.obj_id, tags.chunk_id, tags.n_bytes)); -+ -+ dev->n_free_chunks++; -+ -+ } else if (tags.chunk_id > 0) { -+ /* chunk_id > 0 so it is a data chunk... */ -+ unsigned int endpos; -+ __u32 chunkBase = -+ (tags.chunk_id - 1) * dev->data_bytes_per_chunk; -+ -+ foundChunksInBlock = 1; -+ -+ -+ yaffs_set_chunk_bit(dev, blk, c); -+ bi->pages_in_use++; -+ -+ in = yaffs_find_or_create_by_number(dev, -+ tags. -+ obj_id, -+ YAFFS_OBJECT_TYPE_FILE); -+ if (!in) { -+ /* Out of memory */ -+ alloc_failed = 1; -+ } -+ -+ if (in && -+ in->variant_type == YAFFS_OBJECT_TYPE_FILE -+ && chunkBase < in->variant.file_variant.shrink_size) { -+ /* This has not been invalidated by a resize */ -+ if (!yaffs_put_chunk_in_file(in, tags.chunk_id, chunk, -1)) { -+ alloc_failed = 1; -+ } -+ -+ /* File size is calculated by looking at the data chunks if we have not -+ * seen an object header yet. Stop this practice once we find an object header. -+ */ -+ endpos = chunkBase + tags.n_bytes; -+ -+ if (!in->valid && /* have not got an object header yet */ -+ in->variant.file_variant.scanned_size < endpos) { -+ in->variant.file_variant.scanned_size = endpos; -+ in->variant.file_variant.file_size = endpos; -+ } -+ -+ } else if (in) { -+ /* This chunk has been invalidated by a resize, or a past file deletion -+ * so delete the chunk*/ -+ yaffs_chunk_del(dev, chunk, 1, __LINE__); -+ -+ } -+ } else { -+ /* chunk_id == 0, so it is an ObjectHeader. -+ * Thus, we read in the object header and make the object -+ */ -+ foundChunksInBlock = 1; -+ -+ yaffs_set_chunk_bit(dev, blk, c); -+ bi->pages_in_use++; -+ -+ oh = NULL; -+ in = NULL; -+ -+ if (tags.extra_available) { -+ in = yaffs_find_or_create_by_number(dev, -+ tags.obj_id, -+ tags.extra_obj_type); -+ if (!in) -+ alloc_failed = 1; -+ } -+ -+ if (!in || -+ (!in->valid && dev->param.disable_lazy_load) || -+ tags.extra_shadows || -+ (!in->valid && -+ (tags.obj_id == YAFFS_OBJECTID_ROOT || -+ tags.obj_id == YAFFS_OBJECTID_LOSTNFOUND))) { -+ -+ /* If we don't have valid info then we need to read the chunk -+ * TODO In future we can probably defer reading the chunk and -+ * living with invalid data until needed. -+ */ -+ -+ result = yaffs_rd_chunk_tags_nand(dev, -+ chunk, -+ chunkData, -+ NULL); -+ -+ oh = (yaffs_obj_header *) chunkData; -+ -+ if (dev->param.inband_tags) { -+ /* Fix up the header if they got corrupted by inband tags */ -+ oh->shadows_obj = oh->inband_shadowed_obj_id; -+ oh->is_shrink = oh->inband_is_shrink; -+ } -+ -+ if (!in) { -+ in = yaffs_find_or_create_by_number(dev, tags.obj_id, oh->type); -+ if (!in) -+ alloc_failed = 1; -+ } -+ -+ } -+ -+ if (!in) { -+ /* TODO Hoosterman we have a problem! */ -+ T(YAFFS_TRACE_ERROR, -+ (TSTR -+ ("yaffs tragedy: Could not make object for object %d at chunk %d during scan" -+ TENDSTR), tags.obj_id, chunk)); -+ continue; -+ } -+ -+ if (in->valid) { -+ /* We have already filled this one. -+ * We have a duplicate that will be discarded, but -+ * we first have to suck out resize info if it is a file. -+ */ -+ -+ if ((in->variant_type == YAFFS_OBJECT_TYPE_FILE) && -+ ((oh && -+ oh->type == YAFFS_OBJECT_TYPE_FILE) || -+ (tags.extra_available && -+ tags.extra_obj_type == YAFFS_OBJECT_TYPE_FILE))) { -+ __u32 thisSize = -+ (oh) ? oh->file_size : tags. -+ extra_length; -+ __u32 parent_obj_id = -+ (oh) ? oh-> -+ parent_obj_id : tags. -+ extra_parent_id; -+ -+ -+ is_shrink = -+ (oh) ? oh->is_shrink : tags. -+ extra_is_shrink; -+ -+ /* If it is deleted (unlinked at start also means deleted) -+ * we treat the file size as being zeroed at this point. -+ */ -+ if (parent_obj_id == -+ YAFFS_OBJECTID_DELETED -+ || parent_obj_id == -+ YAFFS_OBJECTID_UNLINKED) { -+ thisSize = 0; -+ is_shrink = 1; -+ } -+ -+ if (is_shrink && in->variant.file_variant.shrink_size > thisSize) -+ in->variant.file_variant.shrink_size = thisSize; -+ -+ if (is_shrink) -+ bi->has_shrink_hdr = 1; -+ -+ } -+ /* Use existing - destroy this one. */ -+ yaffs_chunk_del(dev, chunk, 1, __LINE__); -+ -+ } -+ -+ if (!in->valid && in->variant_type != -+ (oh ? oh->type : tags.extra_obj_type)) -+ T(YAFFS_TRACE_ERROR, ( -+ TSTR("yaffs tragedy: Bad object type, " -+ TCONT("%d != %d, for object %d at chunk ") -+ TCONT("%d during scan") -+ TENDSTR), oh ? -+ oh->type : tags.extra_obj_type, -+ in->variant_type, tags.obj_id, -+ chunk)); -+ -+ if (!in->valid && -+ (tags.obj_id == YAFFS_OBJECTID_ROOT || -+ tags.obj_id == -+ YAFFS_OBJECTID_LOSTNFOUND)) { -+ /* We only load some info, don't fiddle with directory structure */ -+ in->valid = 1; -+ -+ if (oh) { -+ -+ in->yst_mode = oh->yst_mode; -+#ifdef CONFIG_YAFFS_WINCE -+ in->win_atime[0] = oh->win_atime[0]; -+ in->win_ctime[0] = oh->win_ctime[0]; -+ in->win_mtime[0] = oh->win_mtime[0]; -+ in->win_atime[1] = oh->win_atime[1]; -+ in->win_ctime[1] = oh->win_ctime[1]; -+ in->win_mtime[1] = oh->win_mtime[1]; -+#else -+ in->yst_uid = oh->yst_uid; -+ in->yst_gid = oh->yst_gid; -+ in->yst_atime = oh->yst_atime; -+ in->yst_mtime = oh->yst_mtime; -+ in->yst_ctime = oh->yst_ctime; -+ in->yst_rdev = oh->yst_rdev; -+ -+ in->lazy_loaded = 0; -+ -+#endif -+ } else -+ in->lazy_loaded = 1; -+ -+ in->hdr_chunk = chunk; -+ -+ } else if (!in->valid) { -+ /* we need to load this info */ -+ -+ in->valid = 1; -+ in->hdr_chunk = chunk; -+ -+ if (oh) { -+ in->variant_type = oh->type; -+ -+ in->yst_mode = oh->yst_mode; -+#ifdef CONFIG_YAFFS_WINCE -+ in->win_atime[0] = oh->win_atime[0]; -+ in->win_ctime[0] = oh->win_ctime[0]; -+ in->win_mtime[0] = oh->win_mtime[0]; -+ in->win_atime[1] = oh->win_atime[1]; -+ in->win_ctime[1] = oh->win_ctime[1]; -+ in->win_mtime[1] = oh->win_mtime[1]; -+#else -+ in->yst_uid = oh->yst_uid; -+ in->yst_gid = oh->yst_gid; -+ in->yst_atime = oh->yst_atime; -+ in->yst_mtime = oh->yst_mtime; -+ in->yst_ctime = oh->yst_ctime; -+ in->yst_rdev = oh->yst_rdev; -+#endif -+ -+ if (oh->shadows_obj > 0) -+ yaffs_handle_shadowed_obj(dev, -+ oh-> -+ shadows_obj, -+ 1); -+ -+ -+ -+ yaffs_set_obj_name_from_oh(in, oh); -+ parent = -+ yaffs_find_or_create_by_number -+ (dev, oh->parent_obj_id, -+ YAFFS_OBJECT_TYPE_DIRECTORY); -+ -+ file_size = oh->file_size; -+ is_shrink = oh->is_shrink; -+ equiv_id = oh->equiv_id; -+ -+ } else { -+ in->variant_type = tags.extra_obj_type; -+ parent = -+ yaffs_find_or_create_by_number -+ (dev, tags.extra_parent_id, -+ YAFFS_OBJECT_TYPE_DIRECTORY); -+ file_size = tags.extra_length; -+ is_shrink = tags.extra_is_shrink; -+ equiv_id = tags.extra_equiv_id; -+ in->lazy_loaded = 1; -+ -+ } -+ in->dirty = 0; -+ -+ if (!parent) -+ alloc_failed = 1; -+ -+ /* directory stuff... -+ * hook up to parent -+ */ -+ -+ if (parent && parent->variant_type == -+ YAFFS_OBJECT_TYPE_UNKNOWN) { -+ /* Set up as a directory */ -+ parent->variant_type = -+ YAFFS_OBJECT_TYPE_DIRECTORY; -+ YINIT_LIST_HEAD(&parent->variant. -+ dir_variant. -+ children); -+ } else if (!parent || parent->variant_type != -+ YAFFS_OBJECT_TYPE_DIRECTORY) { -+ /* Hoosterman, another problem.... -+ * We're trying to use a non-directory as a directory -+ */ -+ -+ T(YAFFS_TRACE_ERROR, -+ (TSTR -+ ("yaffs tragedy: attempting to use non-directory as a directory in scan. Put in lost+found." -+ TENDSTR))); -+ parent = dev->lost_n_found; -+ } -+ -+ yaffs_add_obj_to_dir(parent, in); -+ -+ itsUnlinked = (parent == dev->del_dir) || -+ (parent == dev->unlinked_dir); -+ -+ if (is_shrink) { -+ /* Mark the block as having a shrinkHeader */ -+ bi->has_shrink_hdr = 1; -+ } -+ -+ /* Note re hardlinks. -+ * Since we might scan a hardlink before its equivalent object is scanned -+ * we put them all in a list. -+ * After scanning is complete, we should have all the objects, so we run -+ * through this list and fix up all the chains. -+ */ -+ -+ switch (in->variant_type) { -+ case YAFFS_OBJECT_TYPE_UNKNOWN: -+ /* Todo got a problem */ -+ break; -+ case YAFFS_OBJECT_TYPE_FILE: -+ -+ if (in->variant.file_variant. -+ scanned_size < file_size) { -+ /* This covers the case where the file size is greater -+ * than where the data is -+ * This will happen if the file is resized to be larger -+ * than its current data extents. -+ */ -+ in->variant.file_variant.file_size = file_size; -+ in->variant.file_variant.scanned_size = file_size; -+ } -+ -+ if (in->variant.file_variant.shrink_size > file_size) -+ in->variant.file_variant.shrink_size = file_size; -+ -+ -+ break; -+ case YAFFS_OBJECT_TYPE_HARDLINK: -+ if (!itsUnlinked) { -+ in->variant.hardlink_variant.equiv_id = -+ equiv_id; -+ in->hard_links.next = -+ (struct ylist_head *) hard_list; -+ hard_list = in; -+ } -+ break; -+ case YAFFS_OBJECT_TYPE_DIRECTORY: -+ /* Do nothing */ -+ break; -+ case YAFFS_OBJECT_TYPE_SPECIAL: -+ /* Do nothing */ -+ break; -+ case YAFFS_OBJECT_TYPE_SYMLINK: -+ if (oh) { -+ in->variant.symlink_variant.alias = -+ yaffs_clone_str(oh->alias); -+ if (!in->variant.symlink_variant.alias) -+ alloc_failed = 1; -+ } -+ break; -+ } -+ -+ } -+ -+ } -+ -+ } /* End of scanning for each chunk */ -+ -+ if (state == YAFFS_BLOCK_STATE_NEEDS_SCANNING) { -+ /* If we got this far while scanning, then the block is fully allocated. */ -+ state = YAFFS_BLOCK_STATE_FULL; -+ } -+ -+ -+ bi->block_state = state; -+ -+ /* Now let's see if it was dirty */ -+ if (bi->pages_in_use == 0 && -+ !bi->has_shrink_hdr && -+ bi->block_state == YAFFS_BLOCK_STATE_FULL) { -+ yaffs_block_became_dirty(dev, blk); -+ } -+ -+ } -+ -+ yaffs_skip_rest_of_block(dev); -+ -+ if (altBlockIndex) -+ YFREE_ALT(blockIndex); -+ else -+ YFREE(blockIndex); -+ -+ /* Ok, we've done all the scanning. -+ * Fix up the hard link chains. -+ * We should now have scanned all the objects, now it's time to add these -+ * hardlinks. -+ */ -+ yaffs_link_fixup(dev, hard_list); -+ -+ -+ yaffs_release_temp_buffer(dev, chunkData, __LINE__); -+ -+ if (alloc_failed) -+ return YAFFS_FAIL; -+ -+ T(YAFFS_TRACE_SCAN, (TSTR("yaffs2_scan_backwards ends" TENDSTR))); -+ -+ return YAFFS_OK; -+} ---- /dev/null -+++ b/fs/yaffs2/yaffs_yaffs2.h -@@ -0,0 +1,36 @@ -+/* -+ * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. -+ * -+ * Copyright (C) 2002-2010 Aleph One Ltd. -+ * for Toby Churchill Ltd and Brightstar Engineering -+ * -+ * Created by Charles Manning <charles@aleph1.co.uk> -+ * -+ * This program is free software; you can redistribute it and/or modify -+ * it under the terms of the GNU General Public License version 2 as -+ * published by the Free Software Foundation. -+ */ -+ -+#ifndef __YAFFS_YAFFS2_H__ -+#define __YAFFS_YAFFS2_H__ -+ -+#include "yaffs_guts.h" -+ -+void yaffs_calc_oldest_dirty_seq(yaffs_dev_t *dev); -+void yaffs2_find_oldest_dirty_seq(yaffs_dev_t *dev); -+void yaffs2_clear_oldest_dirty_seq(yaffs_dev_t *dev, yaffs_block_info_t *bi); -+void yaffs2_update_oldest_dirty_seq(yaffs_dev_t *dev, unsigned block_no, yaffs_block_info_t *bi); -+int yaffs_block_ok_for_gc(yaffs_dev_t *dev, yaffs_block_info_t *bi); -+__u32 yaffs2_find_refresh_block(yaffs_dev_t *dev); -+int yaffs2_checkpt_required(yaffs_dev_t *dev); -+int yaffs_calc_checkpt_blocks_required(yaffs_dev_t *dev); -+ -+ -+void yaffs2_checkpt_invalidate(yaffs_dev_t *dev); -+int yaffs2_checkpt_save(yaffs_dev_t *dev); -+int yaffs2_checkpt_restore(yaffs_dev_t *dev); -+ -+int yaffs2_handle_hole(yaffs_obj_t *obj, loff_t new_size); -+int yaffs2_scan_backwards(yaffs_dev_t *dev); -+ -+#endif ---- a/fs/yaffs2/yportenv.h -+++ b/fs/yaffs2/yportenv.h -@@ -1,7 +1,7 @@ - /* - * YAFFS: Yet another Flash File System . A NAND-flash specific file system. - * -- * Copyright (C) 2002-2007 Aleph One Ltd. -+ * Copyright (C) 2002-2010 Aleph One Ltd. - * for Toby Churchill Ltd and Brightstar Engineering - * - * Created by Charles Manning <charles@aleph1.co.uk> -@@ -41,12 +41,14 @@ - #if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 19)) - #include <linux/config.h> - #endif -+ - #include <linux/kernel.h> - #include <linux/mm.h> - #include <linux/sched.h> - #include <linux/string.h> - #include <linux/slab.h> - #include <linux/vmalloc.h> -+#include <linux/xattr.h> - - #define YCHAR char - #define YUCHAR unsigned char -@@ -55,11 +57,11 @@ - #define yaffs_strcpy(a, b) strcpy(a, b) - #define yaffs_strncpy(a, b, c) strncpy(a, b, c) - #define yaffs_strncmp(a, b, c) strncmp(a, b, c) --#define yaffs_strlen(s) strlen(s) -+#define yaffs_strnlen(s,m) strnlen(s,m) - #define yaffs_sprintf sprintf - #define yaffs_toupper(a) toupper(a) - --#define Y_INLINE inline -+#define Y_INLINE __inline__ - - #define YAFFS_LOSTNFOUND_NAME "lost+found" - #define YAFFS_LOSTNFOUND_PREFIX "obj" -@@ -71,11 +73,11 @@ - #define YFREE_ALT(x) vfree(x) - #define YMALLOC_DMA(x) YMALLOC(x) - --/* KR - added for use in scan so processes aren't blocked indefinitely. */ - #define YYIELD() schedule() -+#define Y_DUMP_STACK() dump_stack() - --#define YAFFS_ROOT_MODE 0666 --#define YAFFS_LOSTNFOUND_MODE 0666 -+#define YAFFS_ROOT_MODE 0755 -+#define YAFFS_LOSTNFOUND_MODE 0700 - - #if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) - #define Y_CURRENT_TIME CURRENT_TIME.tv_sec -@@ -85,19 +87,14 @@ - #define Y_TIME_CONVERT(x) (x) - #endif - --#define yaffs_SumCompare(x, y) ((x) == (y)) -+#define yaffs_sum_cmp(x, y) ((x) == (y)) - #define yaffs_strcmp(a, b) strcmp(a, b) - - #define TENDSTR "\n" --#define TSTR(x) KERN_WARNING x -+#define TSTR(x) KERN_DEBUG x - #define TCONT(x) x - #define TOUT(p) printk p - --#define yaffs_trace(mask, fmt, args...) \ -- do { if ((mask) & (yaffs_traceMask|YAFFS_TRACE_ERROR)) \ -- printk(KERN_WARNING "yaffs: " fmt, ## args); \ -- } while (0) -- - #define compile_time_assertion(assertion) \ - ({ int x = __builtin_choose_expr(assertion, 0, (void)0); (void) x; }) - -@@ -116,7 +113,6 @@ - #include "stdio.h" - #include "string.h" - --#include "devextras.h" - - #define YMALLOC(x) malloc(x) - #define YFREE(x) free(x) -@@ -129,7 +125,7 @@ - #define yaffs_strcat(a, b) strcat(a, b) - #define yaffs_strcpy(a, b) strcpy(a, b) - #define yaffs_strncpy(a, b, c) strncpy(a, b, c) --#define yaffs_strlen(s) strlen(s) -+#define yaffs_strnlen(s,m) strnlen(s,m) - #define yaffs_sprintf sprintf - #define yaffs_toupper(a) toupper(a) - -@@ -146,10 +142,10 @@ - #define YAFFS_LOSTNFOUND_PREFIX "obj" - /* #define YPRINTF(x) printf x */ - --#define YAFFS_ROOT_MODE 0666 --#define YAFFS_LOSTNFOUND_MODE 0666 -+#define YAFFS_ROOT_MODE 0755 -+#define YAFFS_LOSTNFOUND_MODE 0700 - --#define yaffs_SumCompare(x, y) ((x) == (y)) -+#define yaffs_sum_cmp(x, y) ((x) == (y)) - #define yaffs_strcmp(a, b) strcmp(a, b) - - #else -@@ -158,46 +154,180 @@ - - #endif - --/* see yaffs_fs.c */ --extern unsigned int yaffs_traceMask; --extern unsigned int yaffs_wr_attempts; -+#if defined(CONFIG_YAFFS_DIRECT) || defined(CONFIG_YAFFS_WINCE) - --/* -- * Tracing flags. -- * The flags masked in YAFFS_TRACE_ALWAYS are always traced. -- */ -+#ifdef CONFIG_YAFFSFS_PROVIDE_VALUES -+ -+#ifndef O_RDONLY -+#define O_RDONLY 00 -+#endif -+ -+#ifndef O_WRONLY -+#define O_WRONLY 01 -+#endif -+ -+#ifndef O_RDWR -+#define O_RDWR 02 -+#endif -+ -+#ifndef O_CREAT -+#define O_CREAT 0100 -+#endif -+ -+#ifndef O_EXCL -+#define O_EXCL 0200 -+#endif -+ -+#ifndef O_TRUNC -+#define O_TRUNC 01000 -+#endif -+ -+#ifndef O_APPEND -+#define O_APPEND 02000 -+#endif -+ -+#ifndef SEEK_SET -+#define SEEK_SET 0 -+#endif -+ -+#ifndef SEEK_CUR -+#define SEEK_CUR 1 -+#endif -+ -+#ifndef SEEK_END -+#define SEEK_END 2 -+#endif -+ -+#ifndef EBUSY -+#define EBUSY 16 -+#endif -+ -+#ifndef ENODEV -+#define ENODEV 19 -+#endif -+ -+#ifndef EINVAL -+#define EINVAL 22 -+#endif -+ -+#ifndef EBADF -+#define EBADF 9 -+#endif -+ -+#ifndef EACCES -+#define EACCES 13 -+#endif -+ -+#ifndef EXDEV -+#define EXDEV 18 -+#endif -+ -+#ifndef ENOENT -+#define ENOENT 2 -+#endif -+ -+#ifndef ENOSPC -+#define ENOSPC 28 -+#endif -+ -+#ifndef ERANGE -+#define ERANGE 34 -+#endif -+ -+#ifndef ENODATA -+#define ENODATA 61 -+#endif -+ -+#ifndef ENOTEMPTY -+#define ENOTEMPTY 39 -+#endif -+ -+#ifndef ENAMETOOLONG -+#define ENAMETOOLONG 36 -+#endif -+ -+#ifndef ENOMEM -+#define ENOMEM 12 -+#endif -+ -+#ifndef EEXIST -+#define EEXIST 17 -+#endif -+ -+#ifndef ENOTDIR -+#define ENOTDIR 20 -+#endif -+ -+#ifndef EISDIR -+#define EISDIR 21 -+#endif -+ -+ -+// Mode flags -+ -+#ifndef S_IFMT -+#define S_IFMT 0170000 -+#endif -+ -+#ifndef S_IFLNK -+#define S_IFLNK 0120000 -+#endif - --#define YAFFS_TRACE_OS 0x00000002 --#define YAFFS_TRACE_ALLOCATE 0x00000004 --#define YAFFS_TRACE_SCAN 0x00000008 --#define YAFFS_TRACE_BAD_BLOCKS 0x00000010 --#define YAFFS_TRACE_ERASE 0x00000020 --#define YAFFS_TRACE_GC 0x00000040 --#define YAFFS_TRACE_WRITE 0x00000080 --#define YAFFS_TRACE_TRACING 0x00000100 --#define YAFFS_TRACE_DELETION 0x00000200 --#define YAFFS_TRACE_BUFFERS 0x00000400 --#define YAFFS_TRACE_NANDACCESS 0x00000800 --#define YAFFS_TRACE_GC_DETAIL 0x00001000 --#define YAFFS_TRACE_SCAN_DEBUG 0x00002000 --#define YAFFS_TRACE_MTD 0x00004000 --#define YAFFS_TRACE_CHECKPOINT 0x00008000 -- --#define YAFFS_TRACE_VERIFY 0x00010000 --#define YAFFS_TRACE_VERIFY_NAND 0x00020000 --#define YAFFS_TRACE_VERIFY_FULL 0x00040000 --#define YAFFS_TRACE_VERIFY_ALL 0x000F0000 -- -- --#define YAFFS_TRACE_ERROR 0x40000000 --#define YAFFS_TRACE_BUG 0x80000000 --#define YAFFS_TRACE_ALWAYS 0xF0000000 -+#ifndef S_IFDIR -+#define S_IFDIR 0040000 -+#endif -+ -+#ifndef S_IFREG -+#define S_IFREG 0100000 -+#endif - -+#ifndef S_IREAD -+#define S_IREAD 0000400 -+#endif -+ -+#ifndef S_IWRITE -+#define S_IWRITE 0000200 -+#endif - --#define T(mask, p) do { if ((mask) & (yaffs_traceMask | YAFFS_TRACE_ALWAYS)) TOUT(p); } while (0) -+#ifndef S_IEXEC -+#define S_IEXEC 0000100 -+#endif -+ -+#ifndef XATTR_CREATE -+#define XATTR_CREATE 1 -+#endif -+ -+#ifndef XATTR_REPLACE -+#define XATTR_REPLACE 2 -+#endif -+ -+#ifndef R_OK -+#define R_OK 4 -+#define W_OK 2 -+#define X_OK 1 -+#define F_OK 0 -+#endif -+ -+#else -+#include <errno.h> -+#include <sys/stat.h> -+#include <fcntl.h> -+#endif -+ -+#endif -+ -+#ifndef Y_DUMP_STACK -+#define Y_DUMP_STACK() do { } while (0) -+#endif - - #ifndef YBUG --#define YBUG() do {T(YAFFS_TRACE_BUG, (TSTR("==>> yaffs bug: " __FILE__ " %d" TENDSTR), __LINE__)); } while (0) -+#define YBUG() do {\ -+ T(YAFFS_TRACE_BUG,\ -+ (TSTR("==>> yaffs bug: " __FILE__ " %d" TENDSTR),\ -+ __LINE__));\ -+ Y_DUMP_STACK();\ -+} while (0) - #endif - -+ - #endif diff --git a/target/linux/generic/patches-3.6/502-yaffs_git_2010_10_20.patch b/target/linux/generic/patches-3.6/502-yaffs_git_2010_10_20.patch deleted file mode 100644 index 3d705056e4..0000000000 --- a/target/linux/generic/patches-3.6/502-yaffs_git_2010_10_20.patch +++ /dev/null @@ -1,27068 +0,0 @@ ---- a/fs/Kconfig -+++ b/fs/Kconfig -@@ -39,7 +39,6 @@ source "fs/gfs2/Kconfig" - source "fs/ocfs2/Kconfig" - source "fs/btrfs/Kconfig" - source "fs/nilfs2/Kconfig" --source "fs/yaffs2/Kconfig" - - endif # BLOCK - -@@ -205,6 +204,10 @@ source "fs/hfsplus/Kconfig" - source "fs/befs/Kconfig" - source "fs/bfs/Kconfig" - source "fs/efs/Kconfig" -+ -+# Patched by YAFFS -+source "fs/yaffs2/Kconfig" -+ - source "fs/jffs2/Kconfig" - # UBIFS File system configuration - source "fs/ubifs/Kconfig" ---- a/fs/Makefile -+++ b/fs/Makefile -@@ -126,5 +126,6 @@ obj-$(CONFIG_GFS2_FS) += gfs2/ - obj-y += exofs/ # Multiple modules - obj-$(CONFIG_CEPH_FS) += ceph/ - obj-$(CONFIG_PSTORE) += pstore/ --obj-$(CONFIG_YAFFS_FS) += yaffs2/ - -+# Patched by YAFFS -+obj-$(CONFIG_YAFFS_FS) += yaffs2/ ---- a/fs/yaffs2/devextras.h -+++ b/fs/yaffs2/devextras.h -@@ -1,7 +1,7 @@ - /* - * YAFFS: Yet another Flash File System . A NAND-flash specific file system. - * -- * Copyright (C) 2002-2007 Aleph One Ltd. -+ * Copyright (C) 2002-2010 Aleph One Ltd. - * for Toby Churchill Ltd and Brightstar Engineering - * - * Created by Charles Manning <charles@aleph1.co.uk> -@@ -24,6 +24,8 @@ - #define __EXTRAS_H__ - - -+#include "yportenv.h" -+ - #if !(defined __KERNEL__) - - /* Definition of types */ -@@ -33,103 +35,6 @@ typedef unsigned __u32; - - #endif - --/* -- * This is a simple doubly linked list implementation that matches the -- * way the Linux kernel doubly linked list implementation works. -- */ -- --struct ylist_head { -- struct ylist_head *next; /* next in chain */ -- struct ylist_head *prev; /* previous in chain */ --}; -- -- --/* Initialise a static list */ --#define YLIST_HEAD(name) \ --struct ylist_head name = { &(name), &(name)} -- -- -- --/* Initialise a list head to an empty list */ --#define YINIT_LIST_HEAD(p) \ --do { \ -- (p)->next = (p);\ -- (p)->prev = (p); \ --} while (0) -- -- --/* Add an element to a list */ --static __inline__ void ylist_add(struct ylist_head *newEntry, -- struct ylist_head *list) --{ -- struct ylist_head *listNext = list->next; -- -- list->next = newEntry; -- newEntry->prev = list; -- newEntry->next = listNext; -- listNext->prev = newEntry; -- --} -- --static __inline__ void ylist_add_tail(struct ylist_head *newEntry, -- struct ylist_head *list) --{ -- struct ylist_head *listPrev = list->prev; -- -- list->prev = newEntry; -- newEntry->next = list; -- newEntry->prev = listPrev; -- listPrev->next = newEntry; -- --} -- -- --/* Take an element out of its current list, with or without -- * reinitialising the links.of the entry*/ --static __inline__ void ylist_del(struct ylist_head *entry) --{ -- struct ylist_head *listNext = entry->next; -- struct ylist_head *listPrev = entry->prev; -- -- listNext->prev = listPrev; -- listPrev->next = listNext; -- --} -- --static __inline__ void ylist_del_init(struct ylist_head *entry) --{ -- ylist_del(entry); -- entry->next = entry->prev = entry; --} -- -- --/* Test if the list is empty */ --static __inline__ int ylist_empty(struct ylist_head *entry) --{ -- return (entry->next == entry); --} -- -- --/* ylist_entry takes a pointer to a list entry and offsets it to that -- * we can find a pointer to the object it is embedded in. -- */ -- -- --#define ylist_entry(entry, type, member) \ -- ((type *)((char *)(entry)-(unsigned long)(&((type *)NULL)->member))) -- -- --/* ylist_for_each and list_for_each_safe iterate over lists. -- * ylist_for_each_safe uses temporary storage to make the list delete safe -- */ -- --#define ylist_for_each(itervar, list) \ -- for (itervar = (list)->next; itervar != (list); itervar = itervar->next) -- --#define ylist_for_each_safe(itervar, saveVar, list) \ -- for (itervar = (list)->next, saveVar = (list)->next->next; \ -- itervar != (list); itervar = saveVar, saveVar = saveVar->next) -- - - #if !(defined __KERNEL__) - ---- a/fs/yaffs2/Kconfig -+++ b/fs/yaffs2/Kconfig -@@ -90,23 +90,15 @@ config YAFFS_AUTO_YAFFS2 - - If unsure, say Y. - --config YAFFS_DISABLE_LAZY_LOAD -- bool "Disable lazy loading" -- depends on YAFFS_YAFFS2 -+config YAFFS_DISABLE_TAGS_ECC -+ bool "Disable YAFFS from doing ECC on tags by default" -+ depends on YAFFS_FS && YAFFS_YAFFS2 - default n - help -- "Lazy loading" defers loading file details until they are -- required. This saves mount time, but makes the first look-up -- a bit longer. -- -- Lazy loading will only happen if enabled by this option being 'n' -- and if the appropriate tags are available, else yaffs2 will -- automatically fall back to immediate loading and do the right -- thing. -- -- Lazy laoding will be required by checkpointing. -- -- Setting this to 'y' will disable lazy loading. -+ This defaults Yaffs to using its own ECC calculations on tags instead of -+ just relying on the MTD. -+ This behavior can also be overridden with tags_ecc_on and -+ tags_ecc_off mount options. - - If unsure, say N. - -@@ -154,3 +146,45 @@ config YAFFS_SHORT_NAMES_IN_RAM - but makes look-ups faster. - - If unsure, say Y. -+ -+config YAFFS_EMPTY_LOST_AND_FOUND -+ bool "Empty lost and found on boot" -+ depends on YAFFS_FS -+ default n -+ help -+ If this is enabled then the contents of lost and found is -+ automatically dumped at mount. -+ -+ If unsure, say N. -+ -+config YAFFS_DISABLE_BLOCK_REFRESHING -+ bool "Disable yaffs2 block refreshing" -+ depends on YAFFS_FS -+ default n -+ help -+ If this is set, then block refreshing is disabled. -+ Block refreshing infrequently refreshes the oldest block in -+ a yaffs2 file system. This mechanism helps to refresh flash to -+ mitigate against data loss. This is particularly useful for MLC. -+ -+ If unsure, say N. -+ -+config YAFFS_DISABLE_BACKGROUND -+ bool "Disable yaffs2 background processing" -+ depends on YAFFS_FS -+ default n -+ help -+ If this is set, then background processing is disabled. -+ Background processing makes many foreground activities faster. -+ -+ If unsure, say N. -+ -+config YAFFS_XATTR -+ bool "Enable yaffs2 xattr support" -+ depends on YAFFS_FS -+ default y -+ help -+ If this is set then yaffs2 will provide xattr support. -+ If unsure, say Y. -+ -+ ---- a/fs/yaffs2/Makefile -+++ b/fs/yaffs2/Makefile -@@ -4,7 +4,14 @@ - - obj-$(CONFIG_YAFFS_FS) += yaffs.o - --yaffs-y := yaffs_ecc.o yaffs_fs.o yaffs_guts.o yaffs_checkptrw.o --yaffs-y += yaffs_packedtags1.o yaffs_packedtags2.o yaffs_nand.o yaffs_qsort.o -+yaffs-y := yaffs_ecc.o yaffs_vfs_glue.o yaffs_guts.o yaffs_checkptrw.o -+yaffs-y += yaffs_packedtags1.o yaffs_packedtags2.o yaffs_nand.o - yaffs-y += yaffs_tagscompat.o yaffs_tagsvalidity.o - yaffs-y += yaffs_mtdif.o yaffs_mtdif1.o yaffs_mtdif2.o -+yaffs-y += yaffs_nameval.o -+yaffs-y += yaffs_allocator.o -+yaffs-y += yaffs_yaffs1.o -+yaffs-y += yaffs_yaffs2.o -+yaffs-y += yaffs_bitmap.o -+yaffs-y += yaffs_verify.o -+ ---- a/fs/yaffs2/moduleconfig.h -+++ b/fs/yaffs2/moduleconfig.h -@@ -1,7 +1,7 @@ - /* - * YAFFS: Yet another Flash File System . A NAND-flash specific file system. - * -- * Copyright (C) 2002-2007 Aleph One Ltd. -+ * Copyright (C) 2002-2010 Aleph One Ltd. - * for Toby Churchill Ltd and Brightstar Engineering - * - * Created by Martin Fouts <Martin.Fouts@palmsource.com> -@@ -29,25 +29,46 @@ - /* Meaning: Yaffs does its own ECC, rather than using MTD ECC */ - /* #define CONFIG_YAFFS_DOES_ECC */ - -+/* Default: Selected */ -+/* Meaning: Yaffs does its own ECC on tags for packed tags rather than use mtd */ -+#define CONFIG_YAFFS_DOES_TAGS_ECC -+ - /* Default: Not selected */ - /* Meaning: ECC byte order is 'wrong'. Only meaningful if */ - /* CONFIG_YAFFS_DOES_ECC is set */ - /* #define CONFIG_YAFFS_ECC_WRONG_ORDER */ - --/* Default: Selected */ --/* Meaning: Disables testing whether chunks are erased before writing to them*/ --#define CONFIG_YAFFS_DISABLE_CHUNK_ERASED_CHECK -+/* Default: Not selected */ -+/* Meaning: Always test whether chunks are erased before writing to them. -+ Use during mtd debugging and init. */ -+/* #define CONFIG_YAFFS_ALWAYS_CHECK_CHUNK_ERASED */ -+ -+/* Default: Not Selected */ -+/* Meaning: At mount automatically empty all files from lost and found. */ -+/* This is done to fix an old problem where rmdir was not checking for an */ -+/* empty directory. This can also be achieved with a mount option. */ -+#define CONFIG_YAFFS_EMPTY_LOST_AND_FOUND - - /* Default: Selected */ - /* Meaning: Cache short names, taking more RAM, but faster look-ups */ - #define CONFIG_YAFFS_SHORT_NAMES_IN_RAM - --/* Default: 10 */ --/* Meaning: set the count of blocks to reserve for checkpointing */ --#define CONFIG_YAFFS_CHECKPOINT_RESERVED_BLOCKS 10 -+/* Default: Unselected */ -+/* Meaning: Select to disable block refreshing. */ -+/* Block Refreshing periodically rewrites the oldest block. */ -+/* #define CONFIG_DISABLE_BLOCK_REFRESHING */ -+ -+/* Default: Unselected */ -+/* Meaning: Select to disable background processing */ -+/* #define CONFIG_DISABLE_BACKGROUND */ -+ -+ -+/* Default: Selected */ -+/* Meaning: Enable XATTR support */ -+#define CONFIG_YAFFS_XATTR - - /* --Older-style on-NAND data format has a "pageStatus" byte to record -+Older-style on-NAND data format has a "page_status" byte to record - chunk/page state. This byte is zeroed when the page is discarded. - Choose this option if you have existing on-NAND data in this format - that you need to continue to support. New data written also uses the -@@ -57,7 +78,7 @@ adjusted to use the older-style format. - MTD versions in yaffs_mtdif1.c. - */ - /* Default: Not selected */ --/* Meaning: Use older-style on-NAND data format with pageStatus byte */ -+/* Meaning: Use older-style on-NAND data format with page_status byte */ - /* #define CONFIG_YAFFS_9BYTE_TAGS */ - - #endif /* YAFFS_OUT_OF_TREE */ ---- /dev/null -+++ b/fs/yaffs2/yaffs_allocator.c -@@ -0,0 +1,409 @@ -+/* -+ * YAFFS: Yet another Flash File System . A NAND-flash specific file system. -+ * -+ * Copyright (C) 2002-2010 Aleph One Ltd. -+ * for Toby Churchill Ltd and Brightstar Engineering -+ * -+ * Created by Charles Manning <charles@aleph1.co.uk> -+ * -+ * This program is free software; you can redistribute it and/or modify -+ * it under the terms of the GNU Lesser General Public License version 2.1 as -+ * published by the Free Software Foundation. -+ * -+ * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL. -+ */ -+ -+ -+#include "yaffs_allocator.h" -+#include "yaffs_guts.h" -+#include "yaffs_trace.h" -+#include "yportenv.h" -+ -+#ifdef CONFIG_YAFFS_YMALLOC_ALLOCATOR -+ -+void yaffs_deinit_raw_tnodes_and_objs(yaffs_dev_t *dev) -+{ -+ dev = dev; -+} -+ -+void yaffs_init_raw_tnodes_and_objs(yaffs_dev_t *dev) -+{ -+ dev = dev; -+} -+ -+yaffs_tnode_t *yaffs_alloc_raw_tnode(yaffs_dev_t *dev) -+{ -+ return (yaffs_tnode_t *)YMALLOC(dev->tnode_size); -+} -+ -+void yaffs_free_raw_tnode(yaffs_dev_t *dev, yaffs_tnode_t *tn) -+{ -+ dev = dev; -+ YFREE(tn); -+} -+ -+void yaffs_init_raw_objs(yaffs_dev_t *dev) -+{ -+ dev = dev; -+} -+ -+void yaffs_deinit_raw_objs(yaffs_dev_t *dev) -+{ -+ dev = dev; -+} -+ -+yaffs_obj_t *yaffs_alloc_raw_obj(yaffs_dev_t *dev) -+{ -+ dev = dev; -+ return (yaffs_obj_t *) YMALLOC(sizeof(yaffs_obj_t)); -+} -+ -+ -+void yaffs_free_raw_obj(yaffs_dev_t *dev, yaffs_obj_t *obj) -+{ -+ -+ dev = dev; -+ YFREE(obj); -+} -+ -+#else -+ -+struct yaffs_tnode_list { -+ struct yaffs_tnode_list *next; -+ yaffs_tnode_t *tnodes; -+}; -+ -+typedef struct yaffs_tnode_list yaffs_tnodelist_t; -+ -+struct yaffs_obj_tList_struct { -+ yaffs_obj_t *objects; -+ struct yaffs_obj_tList_struct *next; -+}; -+ -+typedef struct yaffs_obj_tList_struct yaffs_obj_tList; -+ -+ -+struct yaffs_AllocatorStruct { -+ int n_tnodesCreated; -+ yaffs_tnode_t *freeTnodes; -+ int nFreeTnodes; -+ yaffs_tnodelist_t *allocatedTnodeList; -+ -+ int n_objCreated; -+ yaffs_obj_t *freeObjects; -+ int nFreeObjects; -+ -+ yaffs_obj_tList *allocatedObjectList; -+}; -+ -+typedef struct yaffs_AllocatorStruct yaffs_Allocator; -+ -+ -+static void yaffs_deinit_raw_tnodes(yaffs_dev_t *dev) -+{ -+ -+ yaffs_Allocator *allocator = (yaffs_Allocator *)dev->allocator; -+ -+ yaffs_tnodelist_t *tmp; -+ -+ if(!allocator){ -+ YBUG(); -+ return; -+ } -+ -+ while (allocator->allocatedTnodeList) { -+ tmp = allocator->allocatedTnodeList->next; -+ -+ YFREE(allocator->allocatedTnodeList->tnodes); -+ YFREE(allocator->allocatedTnodeList); -+ allocator->allocatedTnodeList = tmp; -+ -+ } -+ -+ allocator->freeTnodes = NULL; -+ allocator->nFreeTnodes = 0; -+ allocator->n_tnodesCreated = 0; -+} -+ -+static void yaffs_init_raw_tnodes(yaffs_dev_t *dev) -+{ -+ yaffs_Allocator *allocator = dev->allocator; -+ -+ if(allocator){ -+ allocator->allocatedTnodeList = NULL; -+ allocator->freeTnodes = NULL; -+ allocator->nFreeTnodes = 0; -+ allocator->n_tnodesCreated = 0; -+ } else -+ YBUG(); -+} -+ -+static int yaffs_create_tnodes(yaffs_dev_t *dev, int n_tnodes) -+{ -+ yaffs_Allocator *allocator = (yaffs_Allocator *)dev->allocator; -+ int i; -+ yaffs_tnode_t *newTnodes; -+ __u8 *mem; -+ yaffs_tnode_t *curr; -+ yaffs_tnode_t *next; -+ yaffs_tnodelist_t *tnl; -+ -+ if(!allocator){ -+ YBUG(); -+ return YAFFS_FAIL; -+ } -+ -+ if (n_tnodes < 1) -+ return YAFFS_OK; -+ -+ -+ /* make these things */ -+ -+ newTnodes = YMALLOC(n_tnodes * dev->tnode_size); -+ mem = (__u8 *)newTnodes; -+ -+ if (!newTnodes) { -+ T(YAFFS_TRACE_ERROR, -+ (TSTR("yaffs: Could not allocate Tnodes" TENDSTR))); -+ return YAFFS_FAIL; -+ } -+ -+ /* New hookup for wide tnodes */ -+ for (i = 0; i < n_tnodes - 1; i++) { -+ curr = (yaffs_tnode_t *) &mem[i * dev->tnode_size]; -+ next = (yaffs_tnode_t *) &mem[(i+1) * dev->tnode_size]; -+ curr->internal[0] = next; -+ } -+ -+ curr = (yaffs_tnode_t *) &mem[(n_tnodes - 1) * dev->tnode_size]; -+ curr->internal[0] = allocator->freeTnodes; -+ allocator->freeTnodes = (yaffs_tnode_t *)mem; -+ -+ allocator->nFreeTnodes += n_tnodes; -+ allocator->n_tnodesCreated += n_tnodes; -+ -+ /* Now add this bunch of tnodes to a list for freeing up. -+ * NB If we can't add this to the management list it isn't fatal -+ * but it just means we can't free this bunch of tnodes later. -+ */ -+ -+ tnl = YMALLOC(sizeof(yaffs_tnodelist_t)); -+ if (!tnl) { -+ T(YAFFS_TRACE_ERROR, -+ (TSTR -+ ("yaffs: Could not add tnodes to management list" TENDSTR))); -+ return YAFFS_FAIL; -+ } else { -+ tnl->tnodes = newTnodes; -+ tnl->next = allocator->allocatedTnodeList; -+ allocator->allocatedTnodeList = tnl; -+ } -+ -+ T(YAFFS_TRACE_ALLOCATE, (TSTR("yaffs: Tnodes added" TENDSTR))); -+ -+ return YAFFS_OK; -+} -+ -+ -+yaffs_tnode_t *yaffs_alloc_raw_tnode(yaffs_dev_t *dev) -+{ -+ yaffs_Allocator *allocator = (yaffs_Allocator *)dev->allocator; -+ yaffs_tnode_t *tn = NULL; -+ -+ if(!allocator){ -+ YBUG(); -+ return NULL; -+ } -+ -+ /* If there are none left make more */ -+ if (!allocator->freeTnodes) -+ yaffs_create_tnodes(dev, YAFFS_ALLOCATION_NTNODES); -+ -+ if (allocator->freeTnodes) { -+ tn = allocator->freeTnodes; -+ allocator->freeTnodes = allocator->freeTnodes->internal[0]; -+ allocator->nFreeTnodes--; -+ } -+ -+ return tn; -+} -+ -+/* FreeTnode frees up a tnode and puts it back on the free list */ -+void yaffs_free_raw_tnode(yaffs_dev_t *dev, yaffs_tnode_t *tn) -+{ -+ yaffs_Allocator *allocator = dev->allocator; -+ -+ if(!allocator){ -+ YBUG(); -+ return; -+ } -+ -+ if (tn) { -+ tn->internal[0] = allocator->freeTnodes; -+ allocator->freeTnodes = tn; -+ allocator->nFreeTnodes++; -+ } -+ dev->checkpoint_blocks_required = 0; /* force recalculation*/ -+} -+ -+ -+ -+static void yaffs_init_raw_objs(yaffs_dev_t *dev) -+{ -+ yaffs_Allocator *allocator = dev->allocator; -+ -+ if(allocator) { -+ allocator->allocatedObjectList = NULL; -+ allocator->freeObjects = NULL; -+ allocator->nFreeObjects = 0; -+ } else -+ YBUG(); -+} -+ -+static void yaffs_deinit_raw_objs(yaffs_dev_t *dev) -+{ -+ yaffs_Allocator *allocator = dev->allocator; -+ yaffs_obj_tList *tmp; -+ -+ if(!allocator){ -+ YBUG(); -+ return; -+ } -+ -+ while (allocator->allocatedObjectList) { -+ tmp = allocator->allocatedObjectList->next; -+ YFREE(allocator->allocatedObjectList->objects); -+ YFREE(allocator->allocatedObjectList); -+ -+ allocator->allocatedObjectList = tmp; -+ } -+ -+ allocator->freeObjects = NULL; -+ allocator->nFreeObjects = 0; -+ allocator->n_objCreated = 0; -+} -+ -+ -+static int yaffs_create_free_objs(yaffs_dev_t *dev, int n_obj) -+{ -+ yaffs_Allocator *allocator = dev->allocator; -+ -+ int i; -+ yaffs_obj_t *newObjects; -+ yaffs_obj_tList *list; -+ -+ if(!allocator){ -+ YBUG(); -+ return YAFFS_FAIL; -+ } -+ -+ if (n_obj < 1) -+ return YAFFS_OK; -+ -+ /* make these things */ -+ newObjects = YMALLOC(n_obj * sizeof(yaffs_obj_t)); -+ list = YMALLOC(sizeof(yaffs_obj_tList)); -+ -+ if (!newObjects || !list) { -+ if (newObjects){ -+ YFREE(newObjects); -+ newObjects = NULL; -+ } -+ if (list){ -+ YFREE(list); -+ list = NULL; -+ } -+ T(YAFFS_TRACE_ALLOCATE, -+ (TSTR("yaffs: Could not allocate more objects" TENDSTR))); -+ return YAFFS_FAIL; -+ } -+ -+ /* Hook them into the free list */ -+ for (i = 0; i < n_obj - 1; i++) { -+ newObjects[i].siblings.next = -+ (struct ylist_head *)(&newObjects[i + 1]); -+ } -+ -+ newObjects[n_obj - 1].siblings.next = (void *)allocator->freeObjects; -+ allocator->freeObjects = newObjects; -+ allocator->nFreeObjects += n_obj; -+ allocator->n_objCreated += n_obj; -+ -+ /* Now add this bunch of Objects to a list for freeing up. */ -+ -+ list->objects = newObjects; -+ list->next = allocator->allocatedObjectList; -+ allocator->allocatedObjectList = list; -+ -+ return YAFFS_OK; -+} -+ -+yaffs_obj_t *yaffs_alloc_raw_obj(yaffs_dev_t *dev) -+{ -+ yaffs_obj_t *obj = NULL; -+ yaffs_Allocator *allocator = dev->allocator; -+ -+ if(!allocator) { -+ YBUG(); -+ return obj; -+ } -+ -+ /* If there are none left make more */ -+ if (!allocator->freeObjects) -+ yaffs_create_free_objs(dev, YAFFS_ALLOCATION_NOBJECTS); -+ -+ if (allocator->freeObjects) { -+ obj = allocator->freeObjects; -+ allocator->freeObjects = -+ (yaffs_obj_t *) (allocator->freeObjects->siblings.next); -+ allocator->nFreeObjects--; -+ } -+ -+ return obj; -+} -+ -+ -+void yaffs_free_raw_obj(yaffs_dev_t *dev, yaffs_obj_t *obj) -+{ -+ -+ yaffs_Allocator *allocator = dev->allocator; -+ -+ if(!allocator) -+ YBUG(); -+ else { -+ /* Link into the free list. */ -+ obj->siblings.next = (struct ylist_head *)(allocator->freeObjects); -+ allocator->freeObjects = obj; -+ allocator->nFreeObjects++; -+ } -+} -+ -+void yaffs_deinit_raw_tnodes_and_objs(yaffs_dev_t *dev) -+{ -+ if(dev->allocator){ -+ yaffs_deinit_raw_tnodes(dev); -+ yaffs_deinit_raw_objs(dev); -+ -+ YFREE(dev->allocator); -+ dev->allocator=NULL; -+ } else -+ YBUG(); -+} -+ -+void yaffs_init_raw_tnodes_and_objs(yaffs_dev_t *dev) -+{ -+ yaffs_Allocator *allocator; -+ -+ if(!dev->allocator){ -+ allocator = YMALLOC(sizeof(yaffs_Allocator)); -+ if(allocator){ -+ dev->allocator = allocator; -+ yaffs_init_raw_tnodes(dev); -+ yaffs_init_raw_objs(dev); -+ } -+ } else -+ YBUG(); -+} -+ -+ -+#endif ---- /dev/null -+++ b/fs/yaffs2/yaffs_allocator.h -@@ -0,0 +1,30 @@ -+/* -+ * YAFFS: Yet another Flash File System . A NAND-flash specific file system. -+ * -+ * Copyright (C) 2002-2010 Aleph One Ltd. -+ * for Toby Churchill Ltd and Brightstar Engineering -+ * -+ * Created by Charles Manning <charles@aleph1.co.uk> -+ * -+ * This program is free software; you can redistribute it and/or modify -+ * it under the terms of the GNU Lesser General Public License version 2.1 as -+ * published by the Free Software Foundation. -+ * -+ * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL. -+ */ -+ -+#ifndef __YAFFS_ALLOCATOR_H__ -+#define __YAFFS_ALLOCATOR_H__ -+ -+#include "yaffs_guts.h" -+ -+void yaffs_init_raw_tnodes_and_objs(yaffs_dev_t *dev); -+void yaffs_deinit_raw_tnodes_and_objs(yaffs_dev_t *dev); -+ -+yaffs_tnode_t *yaffs_alloc_raw_tnode(yaffs_dev_t *dev); -+void yaffs_free_raw_tnode(yaffs_dev_t *dev, yaffs_tnode_t *tn); -+ -+yaffs_obj_t *yaffs_alloc_raw_obj(yaffs_dev_t *dev); -+void yaffs_free_raw_obj(yaffs_dev_t *dev, yaffs_obj_t *obj); -+ -+#endif ---- /dev/null -+++ b/fs/yaffs2/yaffs_bitmap.c -@@ -0,0 +1,105 @@ -+/* -+ * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. -+ * -+ * Copyright (C) 2002-2010 Aleph One Ltd. -+ * for Toby Churchill Ltd and Brightstar Engineering -+ * -+ * Created by Charles Manning <charles@aleph1.co.uk> -+ * -+ * This program is free software; you can redistribute it and/or modify -+ * it under the terms of the GNU General Public License version 2 as -+ * published by the Free Software Foundation. -+ */ -+ -+#include "yaffs_bitmap.h" -+#include "yaffs_trace.h" -+/* -+ * Chunk bitmap manipulations -+ */ -+ -+static Y_INLINE __u8 *yaffs_BlockBits(yaffs_dev_t *dev, int blk) -+{ -+ if (blk < dev->internal_start_block || blk > dev->internal_end_block) { -+ T(YAFFS_TRACE_ERROR, -+ (TSTR("**>> yaffs: BlockBits block %d is not valid" TENDSTR), -+ blk)); -+ YBUG(); -+ } -+ return dev->chunk_bits + -+ (dev->chunk_bit_stride * (blk - dev->internal_start_block)); -+} -+ -+void yaffs_verify_chunk_bit_id(yaffs_dev_t *dev, int blk, int chunk) -+{ -+ if (blk < dev->internal_start_block || blk > dev->internal_end_block || -+ chunk < 0 || chunk >= dev->param.chunks_per_block) { -+ T(YAFFS_TRACE_ERROR, -+ (TSTR("**>> yaffs: Chunk Id (%d:%d) invalid"TENDSTR), -+ blk, chunk)); -+ YBUG(); -+ } -+} -+ -+void yaffs_clear_chunk_bits(yaffs_dev_t *dev, int blk) -+{ -+ __u8 *blkBits = yaffs_BlockBits(dev, blk); -+ -+ memset(blkBits, 0, dev->chunk_bit_stride); -+} -+ -+void yaffs_clear_chunk_bit(yaffs_dev_t *dev, int blk, int chunk) -+{ -+ __u8 *blkBits = yaffs_BlockBits(dev, blk); -+ -+ yaffs_verify_chunk_bit_id(dev, blk, chunk); -+ -+ blkBits[chunk / 8] &= ~(1 << (chunk & 7)); -+} -+ -+void yaffs_set_chunk_bit(yaffs_dev_t *dev, int blk, int chunk) -+{ -+ __u8 *blkBits = yaffs_BlockBits(dev, blk); -+ -+ yaffs_verify_chunk_bit_id(dev, blk, chunk); -+ -+ blkBits[chunk / 8] |= (1 << (chunk & 7)); -+} -+ -+int yaffs_check_chunk_bit(yaffs_dev_t *dev, int blk, int chunk) -+{ -+ __u8 *blkBits = yaffs_BlockBits(dev, blk); -+ yaffs_verify_chunk_bit_id(dev, blk, chunk); -+ -+ return (blkBits[chunk / 8] & (1 << (chunk & 7))) ? 1 : 0; -+} -+ -+int yaffs_still_some_chunks(yaffs_dev_t *dev, int blk) -+{ -+ __u8 *blkBits = yaffs_BlockBits(dev, blk); -+ int i; -+ for (i = 0; i < dev->chunk_bit_stride; i++) { -+ if (*blkBits) -+ return 1; -+ blkBits++; -+ } -+ return 0; -+} -+ -+int yaffs_count_chunk_bits(yaffs_dev_t *dev, int blk) -+{ -+ __u8 *blkBits = yaffs_BlockBits(dev, blk); -+ int i; -+ int n = 0; -+ for (i = 0; i < dev->chunk_bit_stride; i++) { -+ __u8 x = *blkBits; -+ while (x) { -+ if (x & 1) -+ n++; -+ x >>= 1; -+ } -+ -+ blkBits++; -+ } -+ return n; -+} -+ ---- /dev/null -+++ b/fs/yaffs2/yaffs_bitmap.h -@@ -0,0 +1,31 @@ -+/* -+ * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. -+ * -+ * Copyright (C) 2002-2010 Aleph One Ltd. -+ * for Toby Churchill Ltd and Brightstar Engineering -+ * -+ * Created by Charles Manning <charles@aleph1.co.uk> -+ * -+ * This program is free software; you can redistribute it and/or modify -+ * it under the terms of the GNU General Public License version 2 as -+ * published by the Free Software Foundation. -+ */ -+ -+/* -+ * Chunk bitmap manipulations -+ */ -+ -+#ifndef __YAFFS_BITMAP_H__ -+#define __YAFFS_BITMAP_H__ -+ -+#include "yaffs_guts.h" -+ -+void yaffs_verify_chunk_bit_id(yaffs_dev_t *dev, int blk, int chunk); -+void yaffs_clear_chunk_bits(yaffs_dev_t *dev, int blk); -+void yaffs_clear_chunk_bit(yaffs_dev_t *dev, int blk, int chunk); -+void yaffs_set_chunk_bit(yaffs_dev_t *dev, int blk, int chunk); -+int yaffs_check_chunk_bit(yaffs_dev_t *dev, int blk, int chunk); -+int yaffs_still_some_chunks(yaffs_dev_t *dev, int blk); -+int yaffs_count_chunk_bits(yaffs_dev_t *dev, int blk); -+ -+#endif ---- a/fs/yaffs2/yaffs_checkptrw.c -+++ b/fs/yaffs2/yaffs_checkptrw.c -@@ -1,7 +1,7 @@ - /* - * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. - * -- * Copyright (C) 2002-2007 Aleph One Ltd. -+ * Copyright (C) 2002-2010 Aleph One Ltd. - * for Toby Churchill Ltd and Brightstar Engineering - * - * Created by Charles Manning <charles@aleph1.co.uk> -@@ -11,16 +11,12 @@ - * published by the Free Software Foundation. - */ - --const char *yaffs_checkptrw_c_version = -- "$Id: yaffs_checkptrw.c,v 1.18 2009-03-06 17:20:49 wookey Exp $"; -- -- - #include "yaffs_checkptrw.h" - #include "yaffs_getblockinfo.h" - --static int yaffs_CheckpointSpaceOk(yaffs_Device *dev) -+static int yaffs2_checkpt_space_ok(yaffs_dev_t *dev) - { -- int blocksAvailable = dev->nErasedBlocks - dev->nReservedBlocks; -+ int blocksAvailable = dev->n_erased_blocks - dev->param.n_reserved_blocks; - - T(YAFFS_TRACE_CHECKPOINT, - (TSTR("checkpt blocks available = %d" TENDSTR), -@@ -30,53 +26,56 @@ static int yaffs_CheckpointSpaceOk(yaffs - } - - --static int yaffs_CheckpointErase(yaffs_Device *dev) -+static int yaffs_checkpt_erase(yaffs_dev_t *dev) - { - int i; - -- if (!dev->eraseBlockInNAND) -+ if (!dev->param.erase_fn) - return 0; - T(YAFFS_TRACE_CHECKPOINT, (TSTR("checking blocks %d to %d"TENDSTR), -- dev->internalStartBlock, dev->internalEndBlock)); -+ dev->internal_start_block, dev->internal_end_block)); - -- for (i = dev->internalStartBlock; i <= dev->internalEndBlock; i++) { -- yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, i); -- if (bi->blockState == YAFFS_BLOCK_STATE_CHECKPOINT) { -+ for (i = dev->internal_start_block; i <= dev->internal_end_block; i++) { -+ yaffs_block_info_t *bi = yaffs_get_block_info(dev, i); -+ if (bi->block_state == YAFFS_BLOCK_STATE_CHECKPOINT) { - T(YAFFS_TRACE_CHECKPOINT, (TSTR("erasing checkpt block %d"TENDSTR), i)); -- if (dev->eraseBlockInNAND(dev, i - dev->blockOffset /* realign */)) { -- bi->blockState = YAFFS_BLOCK_STATE_EMPTY; -- dev->nErasedBlocks++; -- dev->nFreeChunks += dev->nChunksPerBlock; -+ -+ dev->n_erasures++; -+ -+ if (dev->param.erase_fn(dev, i - dev->block_offset /* realign */)) { -+ bi->block_state = YAFFS_BLOCK_STATE_EMPTY; -+ dev->n_erased_blocks++; -+ dev->n_free_chunks += dev->param.chunks_per_block; - } else { -- dev->markNANDBlockBad(dev, i); -- bi->blockState = YAFFS_BLOCK_STATE_DEAD; -+ dev->param.bad_block_fn(dev, i); -+ bi->block_state = YAFFS_BLOCK_STATE_DEAD; - } - } - } - -- dev->blocksInCheckpoint = 0; -+ dev->blocks_in_checkpt = 0; - - return 1; - } - - --static void yaffs_CheckpointFindNextErasedBlock(yaffs_Device *dev) -+static void yaffs2_checkpt_find_erased_block(yaffs_dev_t *dev) - { - int i; -- int blocksAvailable = dev->nErasedBlocks - dev->nReservedBlocks; -+ int blocksAvailable = dev->n_erased_blocks - dev->param.n_reserved_blocks; - T(YAFFS_TRACE_CHECKPOINT, - (TSTR("allocating checkpt block: erased %d reserved %d avail %d next %d "TENDSTR), -- dev->nErasedBlocks, dev->nReservedBlocks, blocksAvailable, dev->checkpointNextBlock)); -+ dev->n_erased_blocks, dev->param.n_reserved_blocks, blocksAvailable, dev->checkpt_next_block)); - -- if (dev->checkpointNextBlock >= 0 && -- dev->checkpointNextBlock <= dev->internalEndBlock && -+ if (dev->checkpt_next_block >= 0 && -+ dev->checkpt_next_block <= dev->internal_end_block && - blocksAvailable > 0) { - -- for (i = dev->checkpointNextBlock; i <= dev->internalEndBlock; i++) { -- yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, i); -- if (bi->blockState == YAFFS_BLOCK_STATE_EMPTY) { -- dev->checkpointNextBlock = i + 1; -- dev->checkpointCurrentBlock = i; -+ for (i = dev->checkpt_next_block; i <= dev->internal_end_block; i++) { -+ yaffs_block_info_t *bi = yaffs_get_block_info(dev, i); -+ if (bi->block_state == YAFFS_BLOCK_STATE_EMPTY) { -+ dev->checkpt_next_block = i + 1; -+ dev->checkpt_cur_block = i; - T(YAFFS_TRACE_CHECKPOINT, (TSTR("allocating checkpt block %d"TENDSTR), i)); - return; - } -@@ -84,34 +83,34 @@ static void yaffs_CheckpointFindNextEras - } - T(YAFFS_TRACE_CHECKPOINT, (TSTR("out of checkpt blocks"TENDSTR))); - -- dev->checkpointNextBlock = -1; -- dev->checkpointCurrentBlock = -1; -+ dev->checkpt_next_block = -1; -+ dev->checkpt_cur_block = -1; - } - --static void yaffs_CheckpointFindNextCheckpointBlock(yaffs_Device *dev) -+static void yaffs2_checkpt_find_block(yaffs_dev_t *dev) - { - int i; -- yaffs_ExtendedTags tags; -+ yaffs_ext_tags tags; - - T(YAFFS_TRACE_CHECKPOINT, (TSTR("find next checkpt block: start: blocks %d next %d" TENDSTR), -- dev->blocksInCheckpoint, dev->checkpointNextBlock)); -+ dev->blocks_in_checkpt, dev->checkpt_next_block)); - -- if (dev->blocksInCheckpoint < dev->checkpointMaxBlocks) -- for (i = dev->checkpointNextBlock; i <= dev->internalEndBlock; i++) { -- int chunk = i * dev->nChunksPerBlock; -- int realignedChunk = chunk - dev->chunkOffset; -+ if (dev->blocks_in_checkpt < dev->checkpt_max_blocks) -+ for (i = dev->checkpt_next_block; i <= dev->internal_end_block; i++) { -+ int chunk = i * dev->param.chunks_per_block; -+ int realignedChunk = chunk - dev->chunk_offset; - -- dev->readChunkWithTagsFromNAND(dev, realignedChunk, -+ dev->param.read_chunk_tags_fn(dev, realignedChunk, - NULL, &tags); - T(YAFFS_TRACE_CHECKPOINT, (TSTR("find next checkpt block: search: block %d oid %d seq %d eccr %d" TENDSTR), -- i, tags.objectId, tags.sequenceNumber, tags.eccResult)); -+ i, tags.obj_id, tags.seq_number, tags.ecc_result)); - -- if (tags.sequenceNumber == YAFFS_SEQUENCE_CHECKPOINT_DATA) { -+ if (tags.seq_number == YAFFS_SEQUENCE_CHECKPOINT_DATA) { - /* Right kind of block */ -- dev->checkpointNextBlock = tags.objectId; -- dev->checkpointCurrentBlock = i; -- dev->checkpointBlockList[dev->blocksInCheckpoint] = i; -- dev->blocksInCheckpoint++; -+ dev->checkpt_next_block = tags.obj_id; -+ dev->checkpt_cur_block = i; -+ dev->checkpt_block_list[dev->blocks_in_checkpt] = i; -+ dev->blocks_in_checkpt++; - T(YAFFS_TRACE_CHECKPOINT, (TSTR("found checkpt block %d"TENDSTR), i)); - return; - } -@@ -119,122 +118,127 @@ static void yaffs_CheckpointFindNextChec - - T(YAFFS_TRACE_CHECKPOINT, (TSTR("found no more checkpt blocks"TENDSTR))); - -- dev->checkpointNextBlock = -1; -- dev->checkpointCurrentBlock = -1; -+ dev->checkpt_next_block = -1; -+ dev->checkpt_cur_block = -1; - } - - --int yaffs_CheckpointOpen(yaffs_Device *dev, int forWriting) -+int yaffs2_checkpt_open(yaffs_dev_t *dev, int forWriting) - { - -+ -+ dev->checkpt_open_write = forWriting; -+ - /* Got the functions we need? */ -- if (!dev->writeChunkWithTagsToNAND || -- !dev->readChunkWithTagsFromNAND || -- !dev->eraseBlockInNAND || -- !dev->markNANDBlockBad) -+ if (!dev->param.write_chunk_tags_fn || -+ !dev->param.read_chunk_tags_fn || -+ !dev->param.erase_fn || -+ !dev->param.bad_block_fn) - return 0; - -- if (forWriting && !yaffs_CheckpointSpaceOk(dev)) -+ if (forWriting && !yaffs2_checkpt_space_ok(dev)) - return 0; - -- if (!dev->checkpointBuffer) -- dev->checkpointBuffer = YMALLOC_DMA(dev->totalBytesPerChunk); -- if (!dev->checkpointBuffer) -+ if (!dev->checkpt_buffer) -+ dev->checkpt_buffer = YMALLOC_DMA(dev->param.total_bytes_per_chunk); -+ if (!dev->checkpt_buffer) - return 0; - - -- dev->checkpointPageSequence = 0; -- -- dev->checkpointOpenForWrite = forWriting; -- -- dev->checkpointByteCount = 0; -- dev->checkpointSum = 0; -- dev->checkpointXor = 0; -- dev->checkpointCurrentBlock = -1; -- dev->checkpointCurrentChunk = -1; -- dev->checkpointNextBlock = dev->internalStartBlock; -+ dev->checkpt_page_seq = 0; -+ dev->checkpt_byte_count = 0; -+ dev->checkpt_sum = 0; -+ dev->checkpt_xor = 0; -+ dev->checkpt_cur_block = -1; -+ dev->checkpt_cur_chunk = -1; -+ dev->checkpt_next_block = dev->internal_start_block; - - /* Erase all the blocks in the checkpoint area */ - if (forWriting) { -- memset(dev->checkpointBuffer, 0, dev->nDataBytesPerChunk); -- dev->checkpointByteOffset = 0; -- return yaffs_CheckpointErase(dev); -+ memset(dev->checkpt_buffer, 0, dev->data_bytes_per_chunk); -+ dev->checkpt_byte_offs = 0; -+ return yaffs_checkpt_erase(dev); - } else { - int i; - /* Set to a value that will kick off a read */ -- dev->checkpointByteOffset = dev->nDataBytesPerChunk; -+ dev->checkpt_byte_offs = dev->data_bytes_per_chunk; - /* A checkpoint block list of 1 checkpoint block per 16 block is (hopefully) - * going to be way more than we need */ -- dev->blocksInCheckpoint = 0; -- dev->checkpointMaxBlocks = (dev->internalEndBlock - dev->internalStartBlock)/16 + 2; -- dev->checkpointBlockList = YMALLOC(sizeof(int) * dev->checkpointMaxBlocks); -- for (i = 0; i < dev->checkpointMaxBlocks; i++) -- dev->checkpointBlockList[i] = -1; -+ dev->blocks_in_checkpt = 0; -+ dev->checkpt_max_blocks = (dev->internal_end_block - dev->internal_start_block)/16 + 2; -+ dev->checkpt_block_list = YMALLOC(sizeof(int) * dev->checkpt_max_blocks); -+ if(!dev->checkpt_block_list) -+ return 0; -+ -+ for (i = 0; i < dev->checkpt_max_blocks; i++) -+ dev->checkpt_block_list[i] = -1; - } - - return 1; - } - --int yaffs_GetCheckpointSum(yaffs_Device *dev, __u32 *sum) -+int yaffs2_get_checkpt_sum(yaffs_dev_t *dev, __u32 *sum) - { - __u32 compositeSum; -- compositeSum = (dev->checkpointSum << 8) | (dev->checkpointXor & 0xFF); -+ compositeSum = (dev->checkpt_sum << 8) | (dev->checkpt_xor & 0xFF); - *sum = compositeSum; - return 1; - } - --static int yaffs_CheckpointFlushBuffer(yaffs_Device *dev) -+static int yaffs2_checkpt_flush_buffer(yaffs_dev_t *dev) - { - int chunk; - int realignedChunk; - -- yaffs_ExtendedTags tags; -+ yaffs_ext_tags tags; - -- if (dev->checkpointCurrentBlock < 0) { -- yaffs_CheckpointFindNextErasedBlock(dev); -- dev->checkpointCurrentChunk = 0; -+ if (dev->checkpt_cur_block < 0) { -+ yaffs2_checkpt_find_erased_block(dev); -+ dev->checkpt_cur_chunk = 0; - } - -- if (dev->checkpointCurrentBlock < 0) -+ if (dev->checkpt_cur_block < 0) - return 0; - -- tags.chunkDeleted = 0; -- tags.objectId = dev->checkpointNextBlock; /* Hint to next place to look */ -- tags.chunkId = dev->checkpointPageSequence + 1; -- tags.sequenceNumber = YAFFS_SEQUENCE_CHECKPOINT_DATA; -- tags.byteCount = dev->nDataBytesPerChunk; -- if (dev->checkpointCurrentChunk == 0) { -+ tags.is_deleted = 0; -+ tags.obj_id = dev->checkpt_next_block; /* Hint to next place to look */ -+ tags.chunk_id = dev->checkpt_page_seq + 1; -+ tags.seq_number = YAFFS_SEQUENCE_CHECKPOINT_DATA; -+ tags.n_bytes = dev->data_bytes_per_chunk; -+ if (dev->checkpt_cur_chunk == 0) { - /* First chunk we write for the block? Set block state to - checkpoint */ -- yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, dev->checkpointCurrentBlock); -- bi->blockState = YAFFS_BLOCK_STATE_CHECKPOINT; -- dev->blocksInCheckpoint++; -+ yaffs_block_info_t *bi = yaffs_get_block_info(dev, dev->checkpt_cur_block); -+ bi->block_state = YAFFS_BLOCK_STATE_CHECKPOINT; -+ dev->blocks_in_checkpt++; - } - -- chunk = dev->checkpointCurrentBlock * dev->nChunksPerBlock + dev->checkpointCurrentChunk; -+ chunk = dev->checkpt_cur_block * dev->param.chunks_per_block + dev->checkpt_cur_chunk; - - - T(YAFFS_TRACE_CHECKPOINT, (TSTR("checkpoint wite buffer nand %d(%d:%d) objid %d chId %d" TENDSTR), -- chunk, dev->checkpointCurrentBlock, dev->checkpointCurrentChunk, tags.objectId, tags.chunkId)); -+ chunk, dev->checkpt_cur_block, dev->checkpt_cur_chunk, tags.obj_id, tags.chunk_id)); - -- realignedChunk = chunk - dev->chunkOffset; -+ realignedChunk = chunk - dev->chunk_offset; - -- dev->writeChunkWithTagsToNAND(dev, realignedChunk, -- dev->checkpointBuffer, &tags); -- dev->checkpointByteOffset = 0; -- dev->checkpointPageSequence++; -- dev->checkpointCurrentChunk++; -- if (dev->checkpointCurrentChunk >= dev->nChunksPerBlock) { -- dev->checkpointCurrentChunk = 0; -- dev->checkpointCurrentBlock = -1; -+ dev->n_page_writes++; -+ -+ dev->param.write_chunk_tags_fn(dev, realignedChunk, -+ dev->checkpt_buffer, &tags); -+ dev->checkpt_byte_offs = 0; -+ dev->checkpt_page_seq++; -+ dev->checkpt_cur_chunk++; -+ if (dev->checkpt_cur_chunk >= dev->param.chunks_per_block) { -+ dev->checkpt_cur_chunk = 0; -+ dev->checkpt_cur_block = -1; - } -- memset(dev->checkpointBuffer, 0, dev->nDataBytesPerChunk); -+ memset(dev->checkpt_buffer, 0, dev->data_bytes_per_chunk); - - return 1; - } - - --int yaffs_CheckpointWrite(yaffs_Device *dev, const void *data, int nBytes) -+int yaffs2_checkpt_wr(yaffs_dev_t *dev, const void *data, int n_bytes) - { - int i = 0; - int ok = 1; -@@ -244,36 +248,36 @@ int yaffs_CheckpointWrite(yaffs_Device * - - - -- if (!dev->checkpointBuffer) -+ if (!dev->checkpt_buffer) - return 0; - -- if (!dev->checkpointOpenForWrite) -+ if (!dev->checkpt_open_write) - return -1; - -- while (i < nBytes && ok) { -- dev->checkpointBuffer[dev->checkpointByteOffset] = *dataBytes; -- dev->checkpointSum += *dataBytes; -- dev->checkpointXor ^= *dataBytes; -+ while (i < n_bytes && ok) { -+ dev->checkpt_buffer[dev->checkpt_byte_offs] = *dataBytes; -+ dev->checkpt_sum += *dataBytes; -+ dev->checkpt_xor ^= *dataBytes; - -- dev->checkpointByteOffset++; -+ dev->checkpt_byte_offs++; - i++; - dataBytes++; -- dev->checkpointByteCount++; -+ dev->checkpt_byte_count++; - - -- if (dev->checkpointByteOffset < 0 || -- dev->checkpointByteOffset >= dev->nDataBytesPerChunk) -- ok = yaffs_CheckpointFlushBuffer(dev); -+ if (dev->checkpt_byte_offs < 0 || -+ dev->checkpt_byte_offs >= dev->data_bytes_per_chunk) -+ ok = yaffs2_checkpt_flush_buffer(dev); - } - - return i; - } - --int yaffs_CheckpointRead(yaffs_Device *dev, void *data, int nBytes) -+int yaffs2_checkpt_rd(yaffs_dev_t *dev, void *data, int n_bytes) - { - int i = 0; - int ok = 1; -- yaffs_ExtendedTags tags; -+ yaffs_ext_tags tags; - - - int chunk; -@@ -281,113 +285,116 @@ int yaffs_CheckpointRead(yaffs_Device *d - - __u8 *dataBytes = (__u8 *)data; - -- if (!dev->checkpointBuffer) -+ if (!dev->checkpt_buffer) - return 0; - -- if (dev->checkpointOpenForWrite) -+ if (dev->checkpt_open_write) - return -1; - -- while (i < nBytes && ok) { -+ while (i < n_bytes && ok) { - - -- if (dev->checkpointByteOffset < 0 || -- dev->checkpointByteOffset >= dev->nDataBytesPerChunk) { -+ if (dev->checkpt_byte_offs < 0 || -+ dev->checkpt_byte_offs >= dev->data_bytes_per_chunk) { - -- if (dev->checkpointCurrentBlock < 0) { -- yaffs_CheckpointFindNextCheckpointBlock(dev); -- dev->checkpointCurrentChunk = 0; -+ if (dev->checkpt_cur_block < 0) { -+ yaffs2_checkpt_find_block(dev); -+ dev->checkpt_cur_chunk = 0; - } - -- if (dev->checkpointCurrentBlock < 0) -+ if (dev->checkpt_cur_block < 0) - ok = 0; - else { -- chunk = dev->checkpointCurrentBlock * -- dev->nChunksPerBlock + -- dev->checkpointCurrentChunk; -- -- realignedChunk = chunk - dev->chunkOffset; -+ chunk = dev->checkpt_cur_block * -+ dev->param.chunks_per_block + -+ dev->checkpt_cur_chunk; -+ -+ realignedChunk = chunk - dev->chunk_offset; -+ -+ dev->n_page_reads++; - - /* read in the next chunk */ - /* printf("read checkpoint page %d\n",dev->checkpointPage); */ -- dev->readChunkWithTagsFromNAND(dev, -+ dev->param.read_chunk_tags_fn(dev, - realignedChunk, -- dev->checkpointBuffer, -+ dev->checkpt_buffer, - &tags); - -- if (tags.chunkId != (dev->checkpointPageSequence + 1) || -- tags.eccResult > YAFFS_ECC_RESULT_FIXED || -- tags.sequenceNumber != YAFFS_SEQUENCE_CHECKPOINT_DATA) -+ if (tags.chunk_id != (dev->checkpt_page_seq + 1) || -+ tags.ecc_result > YAFFS_ECC_RESULT_FIXED || -+ tags.seq_number != YAFFS_SEQUENCE_CHECKPOINT_DATA) - ok = 0; - -- dev->checkpointByteOffset = 0; -- dev->checkpointPageSequence++; -- dev->checkpointCurrentChunk++; -+ dev->checkpt_byte_offs = 0; -+ dev->checkpt_page_seq++; -+ dev->checkpt_cur_chunk++; - -- if (dev->checkpointCurrentChunk >= dev->nChunksPerBlock) -- dev->checkpointCurrentBlock = -1; -+ if (dev->checkpt_cur_chunk >= dev->param.chunks_per_block) -+ dev->checkpt_cur_block = -1; - } - } - - if (ok) { -- *dataBytes = dev->checkpointBuffer[dev->checkpointByteOffset]; -- dev->checkpointSum += *dataBytes; -- dev->checkpointXor ^= *dataBytes; -- dev->checkpointByteOffset++; -+ *dataBytes = dev->checkpt_buffer[dev->checkpt_byte_offs]; -+ dev->checkpt_sum += *dataBytes; -+ dev->checkpt_xor ^= *dataBytes; -+ dev->checkpt_byte_offs++; - i++; - dataBytes++; -- dev->checkpointByteCount++; -+ dev->checkpt_byte_count++; - } - } - - return i; - } - --int yaffs_CheckpointClose(yaffs_Device *dev) -+int yaffs_checkpt_close(yaffs_dev_t *dev) - { - -- if (dev->checkpointOpenForWrite) { -- if (dev->checkpointByteOffset != 0) -- yaffs_CheckpointFlushBuffer(dev); -- } else { -+ if (dev->checkpt_open_write) { -+ if (dev->checkpt_byte_offs != 0) -+ yaffs2_checkpt_flush_buffer(dev); -+ } else if(dev->checkpt_block_list){ - int i; -- for (i = 0; i < dev->blocksInCheckpoint && dev->checkpointBlockList[i] >= 0; i++) { -- yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, dev->checkpointBlockList[i]); -- if (bi->blockState == YAFFS_BLOCK_STATE_EMPTY) -- bi->blockState = YAFFS_BLOCK_STATE_CHECKPOINT; -+ for (i = 0; i < dev->blocks_in_checkpt && dev->checkpt_block_list[i] >= 0; i++) { -+ int blk = dev->checkpt_block_list[i]; -+ yaffs_block_info_t *bi = NULL; -+ if( dev->internal_start_block <= blk && blk <= dev->internal_end_block) -+ bi = yaffs_get_block_info(dev, blk); -+ if (bi && bi->block_state == YAFFS_BLOCK_STATE_EMPTY) -+ bi->block_state = YAFFS_BLOCK_STATE_CHECKPOINT; - else { - /* Todo this looks odd... */ - } - } -- YFREE(dev->checkpointBlockList); -- dev->checkpointBlockList = NULL; -+ YFREE(dev->checkpt_block_list); -+ dev->checkpt_block_list = NULL; - } - -- dev->nFreeChunks -= dev->blocksInCheckpoint * dev->nChunksPerBlock; -- dev->nErasedBlocks -= dev->blocksInCheckpoint; -+ dev->n_free_chunks -= dev->blocks_in_checkpt * dev->param.chunks_per_block; -+ dev->n_erased_blocks -= dev->blocks_in_checkpt; - - - T(YAFFS_TRACE_CHECKPOINT, (TSTR("checkpoint byte count %d" TENDSTR), -- dev->checkpointByteCount)); -+ dev->checkpt_byte_count)); - -- if (dev->checkpointBuffer) { -+ if (dev->checkpt_buffer) { - /* free the buffer */ -- YFREE(dev->checkpointBuffer); -- dev->checkpointBuffer = NULL; -+ YFREE(dev->checkpt_buffer); -+ dev->checkpt_buffer = NULL; - return 1; - } else - return 0; - } - --int yaffs_CheckpointInvalidateStream(yaffs_Device *dev) -+int yaffs2_checkpt_invalidate_stream(yaffs_dev_t *dev) - { -- /* Erase the first checksum block */ -- -- T(YAFFS_TRACE_CHECKPOINT, (TSTR("checkpoint invalidate"TENDSTR))); -+ /* Erase the checkpoint data */ - -- if (!yaffs_CheckpointSpaceOk(dev)) -- return 0; -+ T(YAFFS_TRACE_CHECKPOINT, (TSTR("checkpoint invalidate of %d blocks"TENDSTR), -+ dev->blocks_in_checkpt)); - -- return yaffs_CheckpointErase(dev); -+ return yaffs_checkpt_erase(dev); - } - - ---- a/fs/yaffs2/yaffs_checkptrw.h -+++ b/fs/yaffs2/yaffs_checkptrw.h -@@ -1,7 +1,7 @@ - /* - * YAFFS: Yet another Flash File System . A NAND-flash specific file system. - * -- * Copyright (C) 2002-2007 Aleph One Ltd. -+ * Copyright (C) 2002-2010 Aleph One Ltd. - * for Toby Churchill Ltd and Brightstar Engineering - * - * Created by Charles Manning <charles@aleph1.co.uk> -@@ -18,18 +18,17 @@ - - #include "yaffs_guts.h" - --int yaffs_CheckpointOpen(yaffs_Device *dev, int forWriting); -+int yaffs2_checkpt_open(yaffs_dev_t *dev, int forWriting); - --int yaffs_CheckpointWrite(yaffs_Device *dev, const void *data, int nBytes); -+int yaffs2_checkpt_wr(yaffs_dev_t *dev, const void *data, int n_bytes); - --int yaffs_CheckpointRead(yaffs_Device *dev, void *data, int nBytes); -+int yaffs2_checkpt_rd(yaffs_dev_t *dev, void *data, int n_bytes); - --int yaffs_GetCheckpointSum(yaffs_Device *dev, __u32 *sum); -+int yaffs2_get_checkpt_sum(yaffs_dev_t *dev, __u32 *sum); - --int yaffs_CheckpointClose(yaffs_Device *dev); -+int yaffs_checkpt_close(yaffs_dev_t *dev); - --int yaffs_CheckpointInvalidateStream(yaffs_Device *dev); -+int yaffs2_checkpt_invalidate_stream(yaffs_dev_t *dev); - - - #endif -- ---- a/fs/yaffs2/yaffs_ecc.c -+++ b/fs/yaffs2/yaffs_ecc.c -@@ -1,7 +1,7 @@ - /* - * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. - * -- * Copyright (C) 2002-2007 Aleph One Ltd. -+ * Copyright (C) 2002-2010 Aleph One Ltd. - * for Toby Churchill Ltd and Brightstar Engineering - * - * Created by Charles Manning <charles@aleph1.co.uk> -@@ -28,9 +28,6 @@ - * this bytes influence on the line parity. - */ - --const char *yaffs_ecc_c_version = -- "$Id: yaffs_ecc.c,v 1.11 2009-03-06 17:20:50 wookey Exp $"; -- - #include "yportenv.h" - - #include "yaffs_ecc.h" -@@ -72,7 +69,7 @@ static const unsigned char column_parity - - /* Count the bits in an unsigned char or a U32 */ - --static int yaffs_CountBits(unsigned char x) -+static int yaffs_count_bits(unsigned char x) - { - int r = 0; - while (x) { -@@ -83,7 +80,7 @@ static int yaffs_CountBits(unsigned char - return r; - } - --static int yaffs_CountBits32(unsigned x) -+static int yaffs_count_bits32(unsigned x) - { - int r = 0; - while (x) { -@@ -95,7 +92,7 @@ static int yaffs_CountBits32(unsigned x) - } - - /* Calculate the ECC for a 256-byte block of data */ --void yaffs_ECCCalculate(const unsigned char *data, unsigned char *ecc) -+void yaffs_ecc_cacl(const unsigned char *data, unsigned char *ecc) - { - unsigned int i; - -@@ -166,7 +163,7 @@ void yaffs_ECCCalculate(const unsigned c - - /* Correct the ECC on a 256 byte block of data */ - --int yaffs_ECCCorrect(unsigned char *data, unsigned char *read_ecc, -+int yaffs_ecc_correct(unsigned char *data, unsigned char *read_ecc, - const unsigned char *test_ecc) - { - unsigned char d0, d1, d2; /* deltas */ -@@ -226,9 +223,9 @@ int yaffs_ECCCorrect(unsigned char *data - return 1; /* Corrected the error */ - } - -- if ((yaffs_CountBits(d0) + -- yaffs_CountBits(d1) + -- yaffs_CountBits(d2)) == 1) { -+ if ((yaffs_count_bits(d0) + -+ yaffs_count_bits(d1) + -+ yaffs_count_bits(d2)) == 1) { - /* Reccoverable error in ecc */ - - read_ecc[0] = test_ecc[0]; -@@ -248,7 +245,7 @@ int yaffs_ECCCorrect(unsigned char *data - /* - * ECCxxxOther does ECC calcs on arbitrary n bytes of data - */ --void yaffs_ECCCalculateOther(const unsigned char *data, unsigned nBytes, -+void yaffs_ecc_calc_other(const unsigned char *data, unsigned n_bytes, - yaffs_ECCOther *eccOther) - { - unsigned int i; -@@ -258,7 +255,7 @@ void yaffs_ECCCalculateOther(const unsig - unsigned line_parity_prime = 0; - unsigned char b; - -- for (i = 0; i < nBytes; i++) { -+ for (i = 0; i < n_bytes; i++) { - b = column_parity_table[*data++]; - col_parity ^= b; - -@@ -275,7 +272,7 @@ void yaffs_ECCCalculateOther(const unsig - eccOther->lineParityPrime = line_parity_prime; - } - --int yaffs_ECCCorrectOther(unsigned char *data, unsigned nBytes, -+int yaffs_ecc_correct_other(unsigned char *data, unsigned n_bytes, - yaffs_ECCOther *read_ecc, - const yaffs_ECCOther *test_ecc) - { -@@ -304,7 +301,7 @@ int yaffs_ECCCorrectOther(unsigned char - if (cDelta & 0x02) - bit |= 0x01; - -- if (lDelta >= nBytes) -+ if (lDelta >= n_bytes) - return -1; - - data[lDelta] ^= (1 << bit); -@@ -312,8 +309,8 @@ int yaffs_ECCCorrectOther(unsigned char - return 1; /* corrected */ - } - -- if ((yaffs_CountBits32(lDelta) + yaffs_CountBits32(lDeltaPrime) + -- yaffs_CountBits(cDelta)) == 1) { -+ if ((yaffs_count_bits32(lDelta) + yaffs_count_bits32(lDeltaPrime) + -+ yaffs_count_bits(cDelta)) == 1) { - /* Reccoverable error in ecc */ - - *read_ecc = *test_ecc; ---- a/fs/yaffs2/yaffs_ecc.h -+++ b/fs/yaffs2/yaffs_ecc.h -@@ -1,7 +1,7 @@ - /* - * YAFFS: Yet another Flash File System . A NAND-flash specific file system. - * -- * Copyright (C) 2002-2007 Aleph One Ltd. -+ * Copyright (C) 2002-2010 Aleph One Ltd. - * for Toby Churchill Ltd and Brightstar Engineering - * - * Created by Charles Manning <charles@aleph1.co.uk> -@@ -32,13 +32,13 @@ typedef struct { - unsigned lineParityPrime; - } yaffs_ECCOther; - --void yaffs_ECCCalculate(const unsigned char *data, unsigned char *ecc); --int yaffs_ECCCorrect(unsigned char *data, unsigned char *read_ecc, -+void yaffs_ecc_cacl(const unsigned char *data, unsigned char *ecc); -+int yaffs_ecc_correct(unsigned char *data, unsigned char *read_ecc, - const unsigned char *test_ecc); - --void yaffs_ECCCalculateOther(const unsigned char *data, unsigned nBytes, -+void yaffs_ecc_calc_other(const unsigned char *data, unsigned n_bytes, - yaffs_ECCOther *ecc); --int yaffs_ECCCorrectOther(unsigned char *data, unsigned nBytes, -+int yaffs_ecc_correct_other(unsigned char *data, unsigned n_bytes, - yaffs_ECCOther *read_ecc, - const yaffs_ECCOther *test_ecc); - #endif ---- a/fs/yaffs2/yaffs_fs.c -+++ /dev/null -@@ -1,2529 +0,0 @@ --/* -- * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. -- * -- * Copyright (C) 2002-2009 Aleph One Ltd. -- * for Toby Churchill Ltd and Brightstar Engineering -- * -- * Created by Charles Manning <charles@aleph1.co.uk> -- * Acknowledgements: -- * Luc van OostenRyck for numerous patches. -- * Nick Bane for numerous patches. -- * Nick Bane for 2.5/2.6 integration. -- * Andras Toth for mknod rdev issue. -- * Michael Fischer for finding the problem with inode inconsistency. -- * Some code bodily lifted from JFFS -- * -- * This program is free software; you can redistribute it and/or modify -- * it under the terms of the GNU General Public License version 2 as -- * published by the Free Software Foundation. -- */ -- --/* -- * -- * This is the file system front-end to YAFFS that hooks it up to -- * the VFS. -- * -- * Special notes: -- * >> 2.4: sb->u.generic_sbp points to the yaffs_Device associated with -- * this superblock -- * >> 2.6: sb->s_fs_info points to the yaffs_Device associated with this -- * superblock -- * >> inode->u.generic_ip points to the associated yaffs_Object. -- */ -- --const char *yaffs_fs_c_version = -- "$Id: yaffs_fs.c,v 1.79 2009-03-17 01:12:00 wookey Exp $"; --extern const char *yaffs_guts_c_version; -- --#include <linux/version.h> --#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 19)) --#include <linux/config.h> --#endif --#include <linux/kernel.h> --#include <linux/module.h> --#include <linux/slab.h> --#include <linux/init.h> --#include <linux/fs.h> --#include <linux/proc_fs.h> --#include <linux/smp_lock.h> --#include <linux/pagemap.h> --#include <linux/mtd/mtd.h> --#include <linux/interrupt.h> --#include <linux/string.h> --#include <linux/ctype.h> -- --#include "asm/div64.h" -- --#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) -- --#include <linux/statfs.h> /* Added NCB 15-8-2003 */ --#include <linux/statfs.h> --#define UnlockPage(p) unlock_page(p) --#define Page_Uptodate(page) test_bit(PG_uptodate, &(page)->flags) -- --/* FIXME: use sb->s_id instead ? */ --#define yaffs_devname(sb, buf) bdevname(sb->s_bdev, buf) -- --#else -- --#include <linux/locks.h> --#define BDEVNAME_SIZE 0 --#define yaffs_devname(sb, buf) kdevname(sb->s_dev) -- --#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 5, 0)) --/* added NCB 26/5/2006 for 2.4.25-vrs2-tcl1 kernel */ --#define __user --#endif -- --#endif -- --#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 26)) --#define YPROC_ROOT (&proc_root) --#else --#define YPROC_ROOT NULL --#endif -- --#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) --#define WRITE_SIZE_STR "writesize" --#define WRITE_SIZE(mtd) ((mtd)->writesize) --#else --#define WRITE_SIZE_STR "oobblock" --#define WRITE_SIZE(mtd) ((mtd)->oobblock) --#endif -- --#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 27)) --#define YAFFS_USE_WRITE_BEGIN_END 1 --#else --#define YAFFS_USE_WRITE_BEGIN_END 0 --#endif -- --#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 28)) --static uint32_t YCALCBLOCKS(uint64_t partition_size, uint32_t block_size) --{ -- uint64_t result = partition_size; -- do_div(result, block_size); -- return (uint32_t)result; --} --#else --#define YCALCBLOCKS(s, b) ((s)/(b)) --#endif -- --#include <linux/uaccess.h> -- --#include "yportenv.h" --#include "yaffs_guts.h" -- --#include <linux/mtd/mtd.h> --#include "yaffs_mtdif.h" --#include "yaffs_mtdif1.h" --#include "yaffs_mtdif2.h" -- --unsigned int yaffs_traceMask = YAFFS_TRACE_BAD_BLOCKS; --unsigned int yaffs_wr_attempts = YAFFS_WR_ATTEMPTS; --unsigned int yaffs_auto_checkpoint = 1; -- --/* Module Parameters */ --#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) --module_param(yaffs_traceMask, uint, 0644); --module_param(yaffs_wr_attempts, uint, 0644); --module_param(yaffs_auto_checkpoint, uint, 0644); --#else --MODULE_PARM(yaffs_traceMask, "i"); --MODULE_PARM(yaffs_wr_attempts, "i"); --MODULE_PARM(yaffs_auto_checkpoint, "i"); --#endif -- --#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 25)) --/* use iget and read_inode */ --#define Y_IGET(sb, inum) iget((sb), (inum)) --static void yaffs_read_inode(struct inode *inode); -- --#else --/* Call local equivalent */ --#define YAFFS_USE_OWN_IGET --#define Y_IGET(sb, inum) yaffs_iget((sb), (inum)) -- --static struct inode *yaffs_iget(struct super_block *sb, unsigned long ino); --#endif -- --/*#define T(x) printk x */ -- --#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 18)) --#define yaffs_InodeToObjectLV(iptr) ((iptr)->i_private) --#else --#define yaffs_InodeToObjectLV(iptr) ((iptr)->u.generic_ip) --#endif -- --#define yaffs_InodeToObject(iptr) ((yaffs_Object *)(yaffs_InodeToObjectLV(iptr))) --#define yaffs_DentryToObject(dptr) yaffs_InodeToObject((dptr)->d_inode) -- --#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) --#define yaffs_SuperToDevice(sb) ((yaffs_Device *)sb->s_fs_info) --#else --#define yaffs_SuperToDevice(sb) ((yaffs_Device *)sb->u.generic_sbp) --#endif -- --static void yaffs_put_super(struct super_block *sb); -- --static ssize_t yaffs_file_write(struct file *f, const char *buf, size_t n, -- loff_t *pos); --static ssize_t yaffs_hold_space(struct file *f); --static void yaffs_release_space(struct file *f); -- --#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) --static int yaffs_file_flush(struct file *file, fl_owner_t id); --#else --static int yaffs_file_flush(struct file *file); --#endif -- --static int yaffs_sync_object(struct file *file, struct dentry *dentry, -- int datasync); -- --static int yaffs_readdir(struct file *f, void *dirent, filldir_t filldir); -- --#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) --static int yaffs_create(struct inode *dir, struct dentry *dentry, int mode, -- struct nameidata *n); --static struct dentry *yaffs_lookup(struct inode *dir, struct dentry *dentry, -- struct nameidata *n); --#else --static int yaffs_create(struct inode *dir, struct dentry *dentry, int mode); --static struct dentry *yaffs_lookup(struct inode *dir, struct dentry *dentry); --#endif --static int yaffs_link(struct dentry *old_dentry, struct inode *dir, -- struct dentry *dentry); --static int yaffs_unlink(struct inode *dir, struct dentry *dentry); --static int yaffs_symlink(struct inode *dir, struct dentry *dentry, -- const char *symname); --static int yaffs_mkdir(struct inode *dir, struct dentry *dentry, int mode); -- --#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) --static int yaffs_mknod(struct inode *dir, struct dentry *dentry, int mode, -- dev_t dev); --#else --static int yaffs_mknod(struct inode *dir, struct dentry *dentry, int mode, -- int dev); --#endif --static int yaffs_rename(struct inode *old_dir, struct dentry *old_dentry, -- struct inode *new_dir, struct dentry *new_dentry); --static int yaffs_setattr(struct dentry *dentry, struct iattr *attr); -- --#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) --static int yaffs_sync_fs(struct super_block *sb, int wait); --static void yaffs_write_super(struct super_block *sb); --#else --static int yaffs_sync_fs(struct super_block *sb); --static int yaffs_write_super(struct super_block *sb); --#endif -- --#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) --static int yaffs_statfs(struct dentry *dentry, struct kstatfs *buf); --#elif (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) --static int yaffs_statfs(struct super_block *sb, struct kstatfs *buf); --#else --static int yaffs_statfs(struct super_block *sb, struct statfs *buf); --#endif -- --#ifdef YAFFS_HAS_PUT_INODE --static void yaffs_put_inode(struct inode *inode); --#endif -- --static void yaffs_delete_inode(struct inode *); --static void yaffs_clear_inode(struct inode *); -- --static int yaffs_readpage(struct file *file, struct page *page); --#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) --static int yaffs_writepage(struct page *page, struct writeback_control *wbc); --#else --static int yaffs_writepage(struct page *page); --#endif -- -- --#if (YAFFS_USE_WRITE_BEGIN_END != 0) --static int yaffs_write_begin(struct file *filp, struct address_space *mapping, -- loff_t pos, unsigned len, unsigned flags, -- struct page **pagep, void **fsdata); --static int yaffs_write_end(struct file *filp, struct address_space *mapping, -- loff_t pos, unsigned len, unsigned copied, -- struct page *pg, void *fsdadata); --#else --static int yaffs_prepare_write(struct file *f, struct page *pg, -- unsigned offset, unsigned to); --static int yaffs_commit_write(struct file *f, struct page *pg, unsigned offset, -- unsigned to); -- --#endif -- --static int yaffs_readlink(struct dentry *dentry, char __user *buffer, -- int buflen); --#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 13)) --static void *yaffs_follow_link(struct dentry *dentry, struct nameidata *nd); --#else --static int yaffs_follow_link(struct dentry *dentry, struct nameidata *nd); --#endif -- --static struct address_space_operations yaffs_file_address_operations = { -- .readpage = yaffs_readpage, -- .writepage = yaffs_writepage, --#if (YAFFS_USE_WRITE_BEGIN_END > 0) -- .write_begin = yaffs_write_begin, -- .write_end = yaffs_write_end, --#else -- .prepare_write = yaffs_prepare_write, -- .commit_write = yaffs_commit_write, --#endif --}; -- --#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 22)) --static const struct file_operations yaffs_file_operations = { -- .read = do_sync_read, -- .write = do_sync_write, -- .aio_read = generic_file_aio_read, -- .aio_write = generic_file_aio_write, -- .mmap = generic_file_mmap, -- .flush = yaffs_file_flush, -- .fsync = yaffs_sync_object, -- .splice_read = generic_file_splice_read, -- .splice_write = generic_file_splice_write, -- .llseek = generic_file_llseek, --}; -- --#elif (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 18)) -- --static const struct file_operations yaffs_file_operations = { -- .read = do_sync_read, -- .write = do_sync_write, -- .aio_read = generic_file_aio_read, -- .aio_write = generic_file_aio_write, -- .mmap = generic_file_mmap, -- .flush = yaffs_file_flush, -- .fsync = yaffs_sync_object, -- .sendfile = generic_file_sendfile, --}; -- --#else -- --static const struct file_operations yaffs_file_operations = { -- .read = generic_file_read, -- .write = generic_file_write, -- .mmap = generic_file_mmap, -- .flush = yaffs_file_flush, -- .fsync = yaffs_sync_object, --#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) -- .sendfile = generic_file_sendfile, --#endif --}; --#endif -- --static const struct inode_operations yaffs_file_inode_operations = { -- .setattr = yaffs_setattr, --}; -- --static const struct inode_operations yaffs_symlink_inode_operations = { -- .readlink = yaffs_readlink, -- .follow_link = yaffs_follow_link, -- .setattr = yaffs_setattr, --}; -- --static const struct inode_operations yaffs_dir_inode_operations = { -- .create = yaffs_create, -- .lookup = yaffs_lookup, -- .link = yaffs_link, -- .unlink = yaffs_unlink, -- .symlink = yaffs_symlink, -- .mkdir = yaffs_mkdir, -- .rmdir = yaffs_unlink, -- .mknod = yaffs_mknod, -- .rename = yaffs_rename, -- .setattr = yaffs_setattr, --}; -- --static const struct file_operations yaffs_dir_operations = { -- .read = generic_read_dir, -- .readdir = yaffs_readdir, -- .fsync = yaffs_sync_object, --}; -- --static const struct super_operations yaffs_super_ops = { -- .statfs = yaffs_statfs, -- --#ifndef YAFFS_USE_OWN_IGET -- .read_inode = yaffs_read_inode, --#endif --#ifdef YAFFS_HAS_PUT_INODE -- .put_inode = yaffs_put_inode, --#endif -- .put_super = yaffs_put_super, -- .delete_inode = yaffs_delete_inode, -- .clear_inode = yaffs_clear_inode, -- .sync_fs = yaffs_sync_fs, -- .write_super = yaffs_write_super, --}; -- --static void yaffs_GrossLock(yaffs_Device *dev) --{ -- T(YAFFS_TRACE_OS, ("yaffs locking %p\n", current)); -- down(&dev->grossLock); -- T(YAFFS_TRACE_OS, ("yaffs locked %p\n", current)); --} -- --static void yaffs_GrossUnlock(yaffs_Device *dev) --{ -- T(YAFFS_TRACE_OS, ("yaffs unlocking %p\n", current)); -- up(&dev->grossLock); --} -- --static int yaffs_readlink(struct dentry *dentry, char __user *buffer, -- int buflen) --{ -- unsigned char *alias; -- int ret; -- -- yaffs_Device *dev = yaffs_DentryToObject(dentry)->myDev; -- -- yaffs_GrossLock(dev); -- -- alias = yaffs_GetSymlinkAlias(yaffs_DentryToObject(dentry)); -- -- yaffs_GrossUnlock(dev); -- -- if (!alias) -- return -ENOMEM; -- -- ret = vfs_readlink(dentry, buffer, buflen, alias); -- kfree(alias); -- return ret; --} -- --#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 13)) --static void *yaffs_follow_link(struct dentry *dentry, struct nameidata *nd) --#else --static int yaffs_follow_link(struct dentry *dentry, struct nameidata *nd) --#endif --{ -- unsigned char *alias; -- int ret; -- yaffs_Device *dev = yaffs_DentryToObject(dentry)->myDev; -- -- yaffs_GrossLock(dev); -- -- alias = yaffs_GetSymlinkAlias(yaffs_DentryToObject(dentry)); -- -- yaffs_GrossUnlock(dev); -- -- if (!alias) { -- ret = -ENOMEM; -- goto out; -- } -- -- ret = vfs_follow_link(nd, alias); -- kfree(alias); --out: --#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 13)) -- return ERR_PTR(ret); --#else -- return ret; --#endif --} -- --struct inode *yaffs_get_inode(struct super_block *sb, int mode, int dev, -- yaffs_Object *obj); -- --/* -- * Lookup is used to find objects in the fs -- */ --#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) -- --static struct dentry *yaffs_lookup(struct inode *dir, struct dentry *dentry, -- struct nameidata *n) --#else --static struct dentry *yaffs_lookup(struct inode *dir, struct dentry *dentry) --#endif --{ -- yaffs_Object *obj; -- struct inode *inode = NULL; /* NCB 2.5/2.6 needs NULL here */ -- -- yaffs_Device *dev = yaffs_InodeToObject(dir)->myDev; -- -- yaffs_GrossLock(dev); -- -- T(YAFFS_TRACE_OS, -- ("yaffs_lookup for %d:%s\n", -- yaffs_InodeToObject(dir)->objectId, dentry->d_name.name)); -- -- obj = yaffs_FindObjectByName(yaffs_InodeToObject(dir), -- dentry->d_name.name); -- -- obj = yaffs_GetEquivalentObject(obj); /* in case it was a hardlink */ -- -- /* Can't hold gross lock when calling yaffs_get_inode() */ -- yaffs_GrossUnlock(dev); -- -- if (obj) { -- T(YAFFS_TRACE_OS, -- ("yaffs_lookup found %d\n", obj->objectId)); -- -- inode = yaffs_get_inode(dir->i_sb, obj->yst_mode, 0, obj); -- -- if (inode) { -- T(YAFFS_TRACE_OS, -- ("yaffs_loookup dentry \n")); --/* #if 0 asserted by NCB for 2.5/6 compatability - falls through to -- * d_add even if NULL inode */ --#if 0 -- /*dget(dentry); // try to solve directory bug */ -- d_add(dentry, inode); -- -- /* return dentry; */ -- return NULL; --#endif -- } -- -- } else { -- T(YAFFS_TRACE_OS, ("yaffs_lookup not found\n")); -- -- } -- --/* added NCB for 2.5/6 compatability - forces add even if inode is -- * NULL which creates dentry hash */ -- d_add(dentry, inode); -- -- return NULL; --} -- -- --#ifdef YAFFS_HAS_PUT_INODE -- --/* For now put inode is just for debugging -- * Put inode is called when the inode **structure** is put. -- */ --static void yaffs_put_inode(struct inode *inode) --{ -- T(YAFFS_TRACE_OS, -- ("yaffs_put_inode: ino %d, count %d\n", (int)inode->i_ino, -- atomic_read(&inode->i_count))); -- --} --#endif -- --/* clear is called to tell the fs to release any per-inode data it holds */ --static void yaffs_clear_inode(struct inode *inode) --{ -- yaffs_Object *obj; -- yaffs_Device *dev; -- -- obj = yaffs_InodeToObject(inode); -- -- T(YAFFS_TRACE_OS, -- ("yaffs_clear_inode: ino %d, count %d %s\n", (int)inode->i_ino, -- atomic_read(&inode->i_count), -- obj ? "object exists" : "null object")); -- -- if (obj) { -- dev = obj->myDev; -- yaffs_GrossLock(dev); -- -- /* Clear the association between the inode and -- * the yaffs_Object. -- */ -- obj->myInode = NULL; -- yaffs_InodeToObjectLV(inode) = NULL; -- -- /* If the object freeing was deferred, then the real -- * free happens now. -- * This should fix the inode inconsistency problem. -- */ -- -- yaffs_HandleDeferedFree(obj); -- -- yaffs_GrossUnlock(dev); -- } -- --} -- --/* delete is called when the link count is zero and the inode -- * is put (ie. nobody wants to know about it anymore, time to -- * delete the file). -- * NB Must call clear_inode() -- */ --static void yaffs_delete_inode(struct inode *inode) --{ -- yaffs_Object *obj = yaffs_InodeToObject(inode); -- yaffs_Device *dev; -- -- T(YAFFS_TRACE_OS, -- ("yaffs_delete_inode: ino %d, count %d %s\n", (int)inode->i_ino, -- atomic_read(&inode->i_count), -- obj ? "object exists" : "null object")); -- -- if (obj) { -- dev = obj->myDev; -- yaffs_GrossLock(dev); -- yaffs_DeleteObject(obj); -- yaffs_GrossUnlock(dev); -- } --#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 13)) -- truncate_inode_pages(&inode->i_data, 0); --#endif -- clear_inode(inode); --} -- --#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) --static int yaffs_file_flush(struct file *file, fl_owner_t id) --#else --static int yaffs_file_flush(struct file *file) --#endif --{ -- yaffs_Object *obj = yaffs_DentryToObject(file->f_dentry); -- -- yaffs_Device *dev = obj->myDev; -- -- T(YAFFS_TRACE_OS, -- ("yaffs_file_flush object %d (%s)\n", obj->objectId, -- obj->dirty ? "dirty" : "clean")); -- -- yaffs_GrossLock(dev); -- -- yaffs_FlushFile(obj, 1); -- -- yaffs_GrossUnlock(dev); -- -- return 0; --} -- --static int yaffs_readpage_nolock(struct file *f, struct page *pg) --{ -- /* Lifted from jffs2 */ -- -- yaffs_Object *obj; -- unsigned char *pg_buf; -- int ret; -- -- yaffs_Device *dev; -- -- T(YAFFS_TRACE_OS, ("yaffs_readpage at %08x, size %08x\n", -- (unsigned)(pg->index << PAGE_CACHE_SHIFT), -- (unsigned)PAGE_CACHE_SIZE)); -- -- obj = yaffs_DentryToObject(f->f_dentry); -- -- dev = obj->myDev; -- --#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) -- BUG_ON(!PageLocked(pg)); --#else -- if (!PageLocked(pg)) -- PAGE_BUG(pg); --#endif -- -- pg_buf = kmap(pg); -- /* FIXME: Can kmap fail? */ -- -- yaffs_GrossLock(dev); -- -- ret = yaffs_ReadDataFromFile(obj, pg_buf, -- pg->index << PAGE_CACHE_SHIFT, -- PAGE_CACHE_SIZE); -- -- yaffs_GrossUnlock(dev); -- -- if (ret >= 0) -- ret = 0; -- -- if (ret) { -- ClearPageUptodate(pg); -- SetPageError(pg); -- } else { -- SetPageUptodate(pg); -- ClearPageError(pg); -- } -- -- flush_dcache_page(pg); -- kunmap(pg); -- -- T(YAFFS_TRACE_OS, ("yaffs_readpage done\n")); -- return ret; --} -- --static int yaffs_readpage_unlock(struct file *f, struct page *pg) --{ -- int ret = yaffs_readpage_nolock(f, pg); -- UnlockPage(pg); -- return ret; --} -- --static int yaffs_readpage(struct file *f, struct page *pg) --{ -- return yaffs_readpage_unlock(f, pg); --} -- --/* writepage inspired by/stolen from smbfs */ -- --#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) --static int yaffs_writepage(struct page *page, struct writeback_control *wbc) --#else --static int yaffs_writepage(struct page *page) --#endif --{ -- struct address_space *mapping = page->mapping; -- loff_t offset = (loff_t) page->index << PAGE_CACHE_SHIFT; -- struct inode *inode; -- unsigned long end_index; -- char *buffer; -- yaffs_Object *obj; -- int nWritten = 0; -- unsigned nBytes; -- -- if (!mapping) -- BUG(); -- inode = mapping->host; -- if (!inode) -- BUG(); -- -- if (offset > inode->i_size) { -- T(YAFFS_TRACE_OS, -- ("yaffs_writepage at %08x, inode size = %08x!!!\n", -- (unsigned)(page->index << PAGE_CACHE_SHIFT), -- (unsigned)inode->i_size)); -- T(YAFFS_TRACE_OS, -- (" -> don't care!!\n")); -- unlock_page(page); -- return 0; -- } -- -- end_index = inode->i_size >> PAGE_CACHE_SHIFT; -- -- /* easy case */ -- if (page->index < end_index) -- nBytes = PAGE_CACHE_SIZE; -- else -- nBytes = inode->i_size & (PAGE_CACHE_SIZE - 1); -- -- get_page(page); -- -- buffer = kmap(page); -- -- obj = yaffs_InodeToObject(inode); -- yaffs_GrossLock(obj->myDev); -- -- T(YAFFS_TRACE_OS, -- ("yaffs_writepage at %08x, size %08x\n", -- (unsigned)(page->index << PAGE_CACHE_SHIFT), nBytes)); -- T(YAFFS_TRACE_OS, -- ("writepag0: obj = %05x, ino = %05x\n", -- (int)obj->variant.fileVariant.fileSize, (int)inode->i_size)); -- -- nWritten = yaffs_WriteDataToFile(obj, buffer, -- page->index << PAGE_CACHE_SHIFT, nBytes, 0); -- -- T(YAFFS_TRACE_OS, -- ("writepag1: obj = %05x, ino = %05x\n", -- (int)obj->variant.fileVariant.fileSize, (int)inode->i_size)); -- -- yaffs_GrossUnlock(obj->myDev); -- -- kunmap(page); -- SetPageUptodate(page); -- UnlockPage(page); -- put_page(page); -- -- return (nWritten == nBytes) ? 0 : -ENOSPC; --} -- -- --#if (YAFFS_USE_WRITE_BEGIN_END > 0) --static int yaffs_write_begin(struct file *filp, struct address_space *mapping, -- loff_t pos, unsigned len, unsigned flags, -- struct page **pagep, void **fsdata) --{ -- struct page *pg = NULL; -- pgoff_t index = pos >> PAGE_CACHE_SHIFT; -- uint32_t offset = pos & (PAGE_CACHE_SIZE - 1); -- uint32_t to = offset + len; -- -- int ret = 0; -- int space_held = 0; -- -- T(YAFFS_TRACE_OS, ("start yaffs_write_begin\n")); -- /* Get a page */ --#if LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 28) -- pg = grab_cache_page_write_begin(mapping, index, flags); --#else -- pg = __grab_cache_page(mapping, index); --#endif -- -- *pagep = pg; -- if (!pg) { -- ret = -ENOMEM; -- goto out; -- } -- /* Get fs space */ -- space_held = yaffs_hold_space(filp); -- -- if (!space_held) { -- ret = -ENOSPC; -- goto out; -- } -- -- /* Update page if required */ -- -- if (!Page_Uptodate(pg) && (offset || to < PAGE_CACHE_SIZE)) -- ret = yaffs_readpage_nolock(filp, pg); -- -- if (ret) -- goto out; -- -- /* Happy path return */ -- T(YAFFS_TRACE_OS, ("end yaffs_write_begin - ok\n")); -- -- return 0; -- --out: -- T(YAFFS_TRACE_OS, ("end yaffs_write_begin fail returning %d\n", ret)); -- if (space_held) -- yaffs_release_space(filp); -- if (pg) { -- unlock_page(pg); -- page_cache_release(pg); -- } -- return ret; --} -- --#else -- --static int yaffs_prepare_write(struct file *f, struct page *pg, -- unsigned offset, unsigned to) --{ -- T(YAFFS_TRACE_OS, ("yaffs_prepair_write\n")); -- -- if (!Page_Uptodate(pg) && (offset || to < PAGE_CACHE_SIZE)) -- return yaffs_readpage_nolock(f, pg); -- return 0; --} --#endif -- --#if (YAFFS_USE_WRITE_BEGIN_END > 0) --static int yaffs_write_end(struct file *filp, struct address_space *mapping, -- loff_t pos, unsigned len, unsigned copied, -- struct page *pg, void *fsdadata) --{ -- int ret = 0; -- void *addr, *kva; -- uint32_t offset_into_page = pos & (PAGE_CACHE_SIZE - 1); -- -- kva = kmap(pg); -- addr = kva + offset_into_page; -- -- T(YAFFS_TRACE_OS, -- ("yaffs_write_end addr %x pos %x nBytes %d\n", -- (unsigned) addr, -- (int)pos, copied)); -- -- ret = yaffs_file_write(filp, addr, copied, &pos); -- -- if (ret != copied) { -- T(YAFFS_TRACE_OS, -- ("yaffs_write_end not same size ret %d copied %d\n", -- ret, copied)); -- SetPageError(pg); -- ClearPageUptodate(pg); -- } else { -- SetPageUptodate(pg); -- } -- -- kunmap(pg); -- -- yaffs_release_space(filp); -- unlock_page(pg); -- page_cache_release(pg); -- return ret; --} --#else -- --static int yaffs_commit_write(struct file *f, struct page *pg, unsigned offset, -- unsigned to) --{ -- void *addr, *kva; -- -- loff_t pos = (((loff_t) pg->index) << PAGE_CACHE_SHIFT) + offset; -- int nBytes = to - offset; -- int nWritten; -- -- unsigned spos = pos; -- unsigned saddr; -- -- kva = kmap(pg); -- addr = kva + offset; -- -- saddr = (unsigned) addr; -- -- T(YAFFS_TRACE_OS, -- ("yaffs_commit_write addr %x pos %x nBytes %d\n", -- saddr, spos, nBytes)); -- -- nWritten = yaffs_file_write(f, addr, nBytes, &pos); -- -- if (nWritten != nBytes) { -- T(YAFFS_TRACE_OS, -- ("yaffs_commit_write not same size nWritten %d nBytes %d\n", -- nWritten, nBytes)); -- SetPageError(pg); -- ClearPageUptodate(pg); -- } else { -- SetPageUptodate(pg); -- } -- -- kunmap(pg); -- -- T(YAFFS_TRACE_OS, -- ("yaffs_commit_write returning %d\n", -- nWritten == nBytes ? 0 : nWritten)); -- -- return nWritten == nBytes ? 0 : nWritten; --} --#endif -- -- --static void yaffs_FillInodeFromObject(struct inode *inode, yaffs_Object *obj) --{ -- if (inode && obj) { -- -- -- /* Check mode against the variant type and attempt to repair if broken. */ -- __u32 mode = obj->yst_mode; -- switch (obj->variantType) { -- case YAFFS_OBJECT_TYPE_FILE: -- if (!S_ISREG(mode)) { -- obj->yst_mode &= ~S_IFMT; -- obj->yst_mode |= S_IFREG; -- } -- -- break; -- case YAFFS_OBJECT_TYPE_SYMLINK: -- if (!S_ISLNK(mode)) { -- obj->yst_mode &= ~S_IFMT; -- obj->yst_mode |= S_IFLNK; -- } -- -- break; -- case YAFFS_OBJECT_TYPE_DIRECTORY: -- if (!S_ISDIR(mode)) { -- obj->yst_mode &= ~S_IFMT; -- obj->yst_mode |= S_IFDIR; -- } -- -- break; -- case YAFFS_OBJECT_TYPE_UNKNOWN: -- case YAFFS_OBJECT_TYPE_HARDLINK: -- case YAFFS_OBJECT_TYPE_SPECIAL: -- default: -- /* TODO? */ -- break; -- } -- -- inode->i_flags |= S_NOATIME; -- -- inode->i_ino = obj->objectId; -- inode->i_mode = obj->yst_mode; -- inode->i_uid = obj->yst_uid; -- inode->i_gid = obj->yst_gid; --#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 19)) -- inode->i_blksize = inode->i_sb->s_blocksize; --#endif --#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) -- -- inode->i_rdev = old_decode_dev(obj->yst_rdev); -- inode->i_atime.tv_sec = (time_t) (obj->yst_atime); -- inode->i_atime.tv_nsec = 0; -- inode->i_mtime.tv_sec = (time_t) obj->yst_mtime; -- inode->i_mtime.tv_nsec = 0; -- inode->i_ctime.tv_sec = (time_t) obj->yst_ctime; -- inode->i_ctime.tv_nsec = 0; --#else -- inode->i_rdev = obj->yst_rdev; -- inode->i_atime = obj->yst_atime; -- inode->i_mtime = obj->yst_mtime; -- inode->i_ctime = obj->yst_ctime; --#endif -- inode->i_size = yaffs_GetObjectFileLength(obj); -- inode->i_blocks = (inode->i_size + 511) >> 9; -- -- inode->i_nlink = yaffs_GetObjectLinkCount(obj); -- -- T(YAFFS_TRACE_OS, -- ("yaffs_FillInode mode %x uid %d gid %d size %d count %d\n", -- inode->i_mode, inode->i_uid, inode->i_gid, -- (int)inode->i_size, atomic_read(&inode->i_count))); -- -- switch (obj->yst_mode & S_IFMT) { -- default: /* fifo, device or socket */ --#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) -- init_special_inode(inode, obj->yst_mode, -- old_decode_dev(obj->yst_rdev)); --#else -- init_special_inode(inode, obj->yst_mode, -- (dev_t) (obj->yst_rdev)); --#endif -- break; -- case S_IFREG: /* file */ -- inode->i_op = &yaffs_file_inode_operations; -- inode->i_fop = &yaffs_file_operations; -- inode->i_mapping->a_ops = -- &yaffs_file_address_operations; -- break; -- case S_IFDIR: /* directory */ -- inode->i_op = &yaffs_dir_inode_operations; -- inode->i_fop = &yaffs_dir_operations; -- break; -- case S_IFLNK: /* symlink */ -- inode->i_op = &yaffs_symlink_inode_operations; -- break; -- } -- -- yaffs_InodeToObjectLV(inode) = obj; -- -- obj->myInode = inode; -- -- } else { -- T(YAFFS_TRACE_OS, -- ("yaffs_FileInode invalid parameters\n")); -- } -- --} -- --struct inode *yaffs_get_inode(struct super_block *sb, int mode, int dev, -- yaffs_Object *obj) --{ -- struct inode *inode; -- -- if (!sb) { -- T(YAFFS_TRACE_OS, -- ("yaffs_get_inode for NULL super_block!!\n")); -- return NULL; -- -- } -- -- if (!obj) { -- T(YAFFS_TRACE_OS, -- ("yaffs_get_inode for NULL object!!\n")); -- return NULL; -- -- } -- -- T(YAFFS_TRACE_OS, -- ("yaffs_get_inode for object %d\n", obj->objectId)); -- -- inode = Y_IGET(sb, obj->objectId); -- if (IS_ERR(inode)) -- return NULL; -- -- /* NB Side effect: iget calls back to yaffs_read_inode(). */ -- /* iget also increments the inode's i_count */ -- /* NB You can't be holding grossLock or deadlock will happen! */ -- -- return inode; --} -- --static ssize_t yaffs_file_write(struct file *f, const char *buf, size_t n, -- loff_t *pos) --{ -- yaffs_Object *obj; -- int nWritten, ipos; -- struct inode *inode; -- yaffs_Device *dev; -- -- obj = yaffs_DentryToObject(f->f_dentry); -- -- dev = obj->myDev; -- -- yaffs_GrossLock(dev); -- -- inode = f->f_dentry->d_inode; -- -- if (!S_ISBLK(inode->i_mode) && f->f_flags & O_APPEND) -- ipos = inode->i_size; -- else -- ipos = *pos; -- -- if (!obj) -- T(YAFFS_TRACE_OS, -- ("yaffs_file_write: hey obj is null!\n")); -- else -- T(YAFFS_TRACE_OS, -- ("yaffs_file_write about to write writing %zu bytes" -- "to object %d at %d\n", -- n, obj->objectId, ipos)); -- -- nWritten = yaffs_WriteDataToFile(obj, buf, ipos, n, 0); -- -- T(YAFFS_TRACE_OS, -- ("yaffs_file_write writing %zu bytes, %d written at %d\n", -- n, nWritten, ipos)); -- -- if (nWritten > 0) { -- ipos += nWritten; -- *pos = ipos; -- if (ipos > inode->i_size) { -- inode->i_size = ipos; -- inode->i_blocks = (ipos + 511) >> 9; -- -- T(YAFFS_TRACE_OS, -- ("yaffs_file_write size updated to %d bytes, " -- "%d blocks\n", -- ipos, (int)(inode->i_blocks))); -- } -- -- } -- yaffs_GrossUnlock(dev); -- return nWritten == 0 ? -ENOSPC : nWritten; --} -- --/* Space holding and freeing is done to ensure we have space available for write_begin/end */ --/* For now we just assume few parallel writes and check against a small number. */ --/* Todo: need to do this with a counter to handle parallel reads better */ -- --static ssize_t yaffs_hold_space(struct file *f) --{ -- yaffs_Object *obj; -- yaffs_Device *dev; -- -- int nFreeChunks; -- -- -- obj = yaffs_DentryToObject(f->f_dentry); -- -- dev = obj->myDev; -- -- yaffs_GrossLock(dev); -- -- nFreeChunks = yaffs_GetNumberOfFreeChunks(dev); -- -- yaffs_GrossUnlock(dev); -- -- return (nFreeChunks > 20) ? 1 : 0; --} -- --static void yaffs_release_space(struct file *f) --{ -- yaffs_Object *obj; -- yaffs_Device *dev; -- -- -- obj = yaffs_DentryToObject(f->f_dentry); -- -- dev = obj->myDev; -- -- yaffs_GrossLock(dev); -- -- -- yaffs_GrossUnlock(dev); --} -- --static int yaffs_readdir(struct file *f, void *dirent, filldir_t filldir) --{ -- yaffs_Object *obj; -- yaffs_Device *dev; -- struct inode *inode = f->f_dentry->d_inode; -- unsigned long offset, curoffs; -- struct ylist_head *i; -- yaffs_Object *l; -- -- char name[YAFFS_MAX_NAME_LENGTH + 1]; -- -- obj = yaffs_DentryToObject(f->f_dentry); -- dev = obj->myDev; -- -- yaffs_GrossLock(dev); -- -- offset = f->f_pos; -- -- T(YAFFS_TRACE_OS, ("yaffs_readdir: starting at %d\n", (int)offset)); -- -- if (offset == 0) { -- T(YAFFS_TRACE_OS, -- ("yaffs_readdir: entry . ino %d \n", -- (int)inode->i_ino)); -- if (filldir(dirent, ".", 1, offset, inode->i_ino, DT_DIR) < 0) -- goto out; -- offset++; -- f->f_pos++; -- } -- if (offset == 1) { -- T(YAFFS_TRACE_OS, -- ("yaffs_readdir: entry .. ino %d \n", -- (int)f->f_dentry->d_parent->d_inode->i_ino)); -- if (filldir(dirent, "..", 2, offset, -- f->f_dentry->d_parent->d_inode->i_ino, DT_DIR) < 0) -- goto out; -- offset++; -- f->f_pos++; -- } -- -- curoffs = 1; -- -- /* If the directory has changed since the open or last call to -- readdir, rewind to after the 2 canned entries. */ -- -- if (f->f_version != inode->i_version) { -- offset = 2; -- f->f_pos = offset; -- f->f_version = inode->i_version; -- } -- -- ylist_for_each(i, &obj->variant.directoryVariant.children) { -- curoffs++; -- if (curoffs >= offset) { -- l = ylist_entry(i, yaffs_Object, siblings); -- -- yaffs_GetObjectName(l, name, -- YAFFS_MAX_NAME_LENGTH + 1); -- T(YAFFS_TRACE_OS, -- ("yaffs_readdir: %s inode %d\n", name, -- yaffs_GetObjectInode(l))); -- -- if (filldir(dirent, -- name, -- strlen(name), -- offset, -- yaffs_GetObjectInode(l), -- yaffs_GetObjectType(l)) < 0) -- goto up_and_out; -- -- offset++; -- f->f_pos++; -- } -- } -- --up_and_out: --out: -- yaffs_GrossUnlock(dev); -- -- return 0; --} -- --/* -- * File creation. Allocate an inode, and we're done.. -- */ -- --#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 29) --#define YCRED(x) x --#else --#define YCRED(x) (x->cred) --#endif -- --#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) --static int yaffs_mknod(struct inode *dir, struct dentry *dentry, int mode, -- dev_t rdev) --#else --static int yaffs_mknod(struct inode *dir, struct dentry *dentry, int mode, -- int rdev) --#endif --{ -- struct inode *inode; -- -- yaffs_Object *obj = NULL; -- yaffs_Device *dev; -- -- yaffs_Object *parent = yaffs_InodeToObject(dir); -- -- int error = -ENOSPC; -- uid_t uid = YCRED(current)->fsuid; -- gid_t gid = (dir->i_mode & S_ISGID) ? dir->i_gid : YCRED(current)->fsgid; -- -- if ((dir->i_mode & S_ISGID) && S_ISDIR(mode)) -- mode |= S_ISGID; -- -- if (parent) { -- T(YAFFS_TRACE_OS, -- ("yaffs_mknod: parent object %d type %d\n", -- parent->objectId, parent->variantType)); -- } else { -- T(YAFFS_TRACE_OS, -- ("yaffs_mknod: could not get parent object\n")); -- return -EPERM; -- } -- -- T(YAFFS_TRACE_OS, ("yaffs_mknod: making oject for %s, " -- "mode %x dev %x\n", -- dentry->d_name.name, mode, rdev)); -- -- dev = parent->myDev; -- -- yaffs_GrossLock(dev); -- -- switch (mode & S_IFMT) { -- default: -- /* Special (socket, fifo, device...) */ -- T(YAFFS_TRACE_OS, ("yaffs_mknod: making special\n")); --#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) -- obj = yaffs_MknodSpecial(parent, dentry->d_name.name, mode, uid, -- gid, old_encode_dev(rdev)); --#else -- obj = yaffs_MknodSpecial(parent, dentry->d_name.name, mode, uid, -- gid, rdev); --#endif -- break; -- case S_IFREG: /* file */ -- T(YAFFS_TRACE_OS, ("yaffs_mknod: making file\n")); -- obj = yaffs_MknodFile(parent, dentry->d_name.name, mode, uid, -- gid); -- break; -- case S_IFDIR: /* directory */ -- T(YAFFS_TRACE_OS, -- ("yaffs_mknod: making directory\n")); -- obj = yaffs_MknodDirectory(parent, dentry->d_name.name, mode, -- uid, gid); -- break; -- case S_IFLNK: /* symlink */ -- T(YAFFS_TRACE_OS, ("yaffs_mknod: making symlink\n")); -- obj = NULL; /* Do we ever get here? */ -- break; -- } -- -- /* Can not call yaffs_get_inode() with gross lock held */ -- yaffs_GrossUnlock(dev); -- -- if (obj) { -- inode = yaffs_get_inode(dir->i_sb, mode, rdev, obj); -- d_instantiate(dentry, inode); -- T(YAFFS_TRACE_OS, -- ("yaffs_mknod created object %d count = %d\n", -- obj->objectId, atomic_read(&inode->i_count))); -- error = 0; -- } else { -- T(YAFFS_TRACE_OS, -- ("yaffs_mknod failed making object\n")); -- error = -ENOMEM; -- } -- -- return error; --} -- --static int yaffs_mkdir(struct inode *dir, struct dentry *dentry, int mode) --{ -- int retVal; -- T(YAFFS_TRACE_OS, ("yaffs_mkdir\n")); -- retVal = yaffs_mknod(dir, dentry, mode | S_IFDIR, 0); -- return retVal; --} -- --#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) --static int yaffs_create(struct inode *dir, struct dentry *dentry, int mode, -- struct nameidata *n) --#else --static int yaffs_create(struct inode *dir, struct dentry *dentry, int mode) --#endif --{ -- T(YAFFS_TRACE_OS, ("yaffs_create\n")); -- return yaffs_mknod(dir, dentry, mode | S_IFREG, 0); --} -- --static int yaffs_unlink(struct inode *dir, struct dentry *dentry) --{ -- int retVal; -- -- yaffs_Device *dev; -- -- T(YAFFS_TRACE_OS, -- ("yaffs_unlink %d:%s\n", (int)(dir->i_ino), -- dentry->d_name.name)); -- -- dev = yaffs_InodeToObject(dir)->myDev; -- -- yaffs_GrossLock(dev); -- -- retVal = yaffs_Unlink(yaffs_InodeToObject(dir), dentry->d_name.name); -- -- if (retVal == YAFFS_OK) { -- dentry->d_inode->i_nlink--; -- dir->i_version++; -- yaffs_GrossUnlock(dev); -- mark_inode_dirty(dentry->d_inode); -- return 0; -- } -- yaffs_GrossUnlock(dev); -- return -ENOTEMPTY; --} -- --/* -- * Create a link... -- */ --static int yaffs_link(struct dentry *old_dentry, struct inode *dir, -- struct dentry *dentry) --{ -- struct inode *inode = old_dentry->d_inode; -- yaffs_Object *obj = NULL; -- yaffs_Object *link = NULL; -- yaffs_Device *dev; -- -- T(YAFFS_TRACE_OS, ("yaffs_link\n")); -- -- obj = yaffs_InodeToObject(inode); -- dev = obj->myDev; -- -- yaffs_GrossLock(dev); -- -- if (!S_ISDIR(inode->i_mode)) /* Don't link directories */ -- link = yaffs_Link(yaffs_InodeToObject(dir), dentry->d_name.name, -- obj); -- -- if (link) { -- old_dentry->d_inode->i_nlink = yaffs_GetObjectLinkCount(obj); -- d_instantiate(dentry, old_dentry->d_inode); -- atomic_inc(&old_dentry->d_inode->i_count); -- T(YAFFS_TRACE_OS, -- ("yaffs_link link count %d i_count %d\n", -- old_dentry->d_inode->i_nlink, -- atomic_read(&old_dentry->d_inode->i_count))); -- } -- -- yaffs_GrossUnlock(dev); -- -- if (link) -- return 0; -- -- return -EPERM; --} -- --static int yaffs_symlink(struct inode *dir, struct dentry *dentry, -- const char *symname) --{ -- yaffs_Object *obj; -- yaffs_Device *dev; -- uid_t uid = YCRED(current)->fsuid; -- gid_t gid = (dir->i_mode & S_ISGID) ? dir->i_gid : YCRED(current)->fsgid; -- -- T(YAFFS_TRACE_OS, ("yaffs_symlink\n")); -- -- dev = yaffs_InodeToObject(dir)->myDev; -- yaffs_GrossLock(dev); -- obj = yaffs_MknodSymLink(yaffs_InodeToObject(dir), dentry->d_name.name, -- S_IFLNK | S_IRWXUGO, uid, gid, symname); -- yaffs_GrossUnlock(dev); -- -- if (obj) { -- struct inode *inode; -- -- inode = yaffs_get_inode(dir->i_sb, obj->yst_mode, 0, obj); -- d_instantiate(dentry, inode); -- T(YAFFS_TRACE_OS, ("symlink created OK\n")); -- return 0; -- } else { -- T(YAFFS_TRACE_OS, ("symlink not created\n")); -- } -- -- return -ENOMEM; --} -- --static int yaffs_sync_object(struct file *file, struct dentry *dentry, -- int datasync) --{ -- -- yaffs_Object *obj; -- yaffs_Device *dev; -- -- obj = yaffs_DentryToObject(dentry); -- -- dev = obj->myDev; -- -- T(YAFFS_TRACE_OS, ("yaffs_sync_object\n")); -- yaffs_GrossLock(dev); -- yaffs_FlushFile(obj, 1); -- yaffs_GrossUnlock(dev); -- return 0; --} -- --/* -- * The VFS layer already does all the dentry stuff for rename. -- * -- * NB: POSIX says you can rename an object over an old object of the same name -- */ --static int yaffs_rename(struct inode *old_dir, struct dentry *old_dentry, -- struct inode *new_dir, struct dentry *new_dentry) --{ -- yaffs_Device *dev; -- int retVal = YAFFS_FAIL; -- yaffs_Object *target; -- -- T(YAFFS_TRACE_OS, ("yaffs_rename\n")); -- dev = yaffs_InodeToObject(old_dir)->myDev; -- -- yaffs_GrossLock(dev); -- -- /* Check if the target is an existing directory that is not empty. */ -- target = yaffs_FindObjectByName(yaffs_InodeToObject(new_dir), -- new_dentry->d_name.name); -- -- -- -- if (target && target->variantType == YAFFS_OBJECT_TYPE_DIRECTORY && -- !ylist_empty(&target->variant.directoryVariant.children)) { -- -- T(YAFFS_TRACE_OS, ("target is non-empty dir\n")); -- -- retVal = YAFFS_FAIL; -- } else { -- /* Now does unlinking internally using shadowing mechanism */ -- T(YAFFS_TRACE_OS, ("calling yaffs_RenameObject\n")); -- -- retVal = yaffs_RenameObject(yaffs_InodeToObject(old_dir), -- old_dentry->d_name.name, -- yaffs_InodeToObject(new_dir), -- new_dentry->d_name.name); -- } -- yaffs_GrossUnlock(dev); -- -- if (retVal == YAFFS_OK) { -- if (target) { -- new_dentry->d_inode->i_nlink--; -- mark_inode_dirty(new_dentry->d_inode); -- } -- -- return 0; -- } else { -- return -ENOTEMPTY; -- } --} -- --static int yaffs_setattr(struct dentry *dentry, struct iattr *attr) --{ -- struct inode *inode = dentry->d_inode; -- int error; -- yaffs_Device *dev; -- -- T(YAFFS_TRACE_OS, -- ("yaffs_setattr of object %d\n", -- yaffs_InodeToObject(inode)->objectId)); -- -- error = inode_change_ok(inode, attr); -- if (error == 0) { -- dev = yaffs_InodeToObject(inode)->myDev; -- yaffs_GrossLock(dev); -- if (yaffs_SetAttributes(yaffs_InodeToObject(inode), attr) == -- YAFFS_OK) { -- error = 0; -- } else { -- error = -EPERM; -- } -- yaffs_GrossUnlock(dev); -- if (!error) -- error = inode_setattr(inode, attr); -- } -- return error; --} -- --#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) --static int yaffs_statfs(struct dentry *dentry, struct kstatfs *buf) --{ -- yaffs_Device *dev = yaffs_DentryToObject(dentry)->myDev; -- struct super_block *sb = dentry->d_sb; --#elif (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) --static int yaffs_statfs(struct super_block *sb, struct kstatfs *buf) --{ -- yaffs_Device *dev = yaffs_SuperToDevice(sb); --#else --static int yaffs_statfs(struct super_block *sb, struct statfs *buf) --{ -- yaffs_Device *dev = yaffs_SuperToDevice(sb); --#endif -- -- T(YAFFS_TRACE_OS, ("yaffs_statfs\n")); -- -- yaffs_GrossLock(dev); -- -- buf->f_type = YAFFS_MAGIC; -- buf->f_bsize = sb->s_blocksize; -- buf->f_namelen = 255; -- -- if (dev->nDataBytesPerChunk & (dev->nDataBytesPerChunk - 1)) { -- /* Do this if chunk size is not a power of 2 */ -- -- uint64_t bytesInDev; -- uint64_t bytesFree; -- -- bytesInDev = ((uint64_t)((dev->endBlock - dev->startBlock + 1))) * -- ((uint64_t)(dev->nChunksPerBlock * dev->nDataBytesPerChunk)); -- -- do_div(bytesInDev, sb->s_blocksize); /* bytesInDev becomes the number of blocks */ -- buf->f_blocks = bytesInDev; -- -- bytesFree = ((uint64_t)(yaffs_GetNumberOfFreeChunks(dev))) * -- ((uint64_t)(dev->nDataBytesPerChunk)); -- -- do_div(bytesFree, sb->s_blocksize); -- -- buf->f_bfree = bytesFree; -- -- } else if (sb->s_blocksize > dev->nDataBytesPerChunk) { -- -- buf->f_blocks = -- (dev->endBlock - dev->startBlock + 1) * -- dev->nChunksPerBlock / -- (sb->s_blocksize / dev->nDataBytesPerChunk); -- buf->f_bfree = -- yaffs_GetNumberOfFreeChunks(dev) / -- (sb->s_blocksize / dev->nDataBytesPerChunk); -- } else { -- buf->f_blocks = -- (dev->endBlock - dev->startBlock + 1) * -- dev->nChunksPerBlock * -- (dev->nDataBytesPerChunk / sb->s_blocksize); -- -- buf->f_bfree = -- yaffs_GetNumberOfFreeChunks(dev) * -- (dev->nDataBytesPerChunk / sb->s_blocksize); -- } -- -- buf->f_files = 0; -- buf->f_ffree = 0; -- buf->f_bavail = buf->f_bfree; -- -- yaffs_GrossUnlock(dev); -- return 0; --} -- -- --static int yaffs_do_sync_fs(struct super_block *sb) --{ -- -- yaffs_Device *dev = yaffs_SuperToDevice(sb); -- T(YAFFS_TRACE_OS, ("yaffs_do_sync_fs\n")); -- -- if (sb->s_dirt) { -- yaffs_GrossLock(dev); -- -- if (dev) { -- yaffs_FlushEntireDeviceCache(dev); -- yaffs_CheckpointSave(dev); -- } -- -- yaffs_GrossUnlock(dev); -- -- sb->s_dirt = 0; -- } -- return 0; --} -- -- --#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) --static void yaffs_write_super(struct super_block *sb) --#else --static int yaffs_write_super(struct super_block *sb) --#endif --{ -- -- T(YAFFS_TRACE_OS, ("yaffs_write_super\n")); -- if (yaffs_auto_checkpoint >= 2) -- yaffs_do_sync_fs(sb); --#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 18)) -- return 0; --#endif --} -- -- --#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) --static int yaffs_sync_fs(struct super_block *sb, int wait) --#else --static int yaffs_sync_fs(struct super_block *sb) --#endif --{ -- T(YAFFS_TRACE_OS, ("yaffs_sync_fs\n")); -- -- if (yaffs_auto_checkpoint >= 1) -- yaffs_do_sync_fs(sb); -- -- return 0; --} -- --#ifdef YAFFS_USE_OWN_IGET -- --static struct inode *yaffs_iget(struct super_block *sb, unsigned long ino) --{ -- struct inode *inode; -- yaffs_Object *obj; -- yaffs_Device *dev = yaffs_SuperToDevice(sb); -- -- T(YAFFS_TRACE_OS, -- ("yaffs_iget for %lu\n", ino)); -- -- inode = iget_locked(sb, ino); -- if (!inode) -- return ERR_PTR(-ENOMEM); -- if (!(inode->i_state & I_NEW)) -- return inode; -- -- /* NB This is called as a side effect of other functions, but -- * we had to release the lock to prevent deadlocks, so -- * need to lock again. -- */ -- -- yaffs_GrossLock(dev); -- -- obj = yaffs_FindObjectByNumber(dev, inode->i_ino); -- -- yaffs_FillInodeFromObject(inode, obj); -- -- yaffs_GrossUnlock(dev); -- -- unlock_new_inode(inode); -- return inode; --} -- --#else -- --static void yaffs_read_inode(struct inode *inode) --{ -- /* NB This is called as a side effect of other functions, but -- * we had to release the lock to prevent deadlocks, so -- * need to lock again. -- */ -- -- yaffs_Object *obj; -- yaffs_Device *dev = yaffs_SuperToDevice(inode->i_sb); -- -- T(YAFFS_TRACE_OS, -- ("yaffs_read_inode for %d\n", (int)inode->i_ino)); -- -- yaffs_GrossLock(dev); -- -- obj = yaffs_FindObjectByNumber(dev, inode->i_ino); -- -- yaffs_FillInodeFromObject(inode, obj); -- -- yaffs_GrossUnlock(dev); --} -- --#endif -- --static YLIST_HEAD(yaffs_dev_list); -- --#if 0 /* not used */ --static int yaffs_remount_fs(struct super_block *sb, int *flags, char *data) --{ -- yaffs_Device *dev = yaffs_SuperToDevice(sb); -- -- if (*flags & MS_RDONLY) { -- struct mtd_info *mtd = yaffs_SuperToDevice(sb)->genericDevice; -- -- T(YAFFS_TRACE_OS, -- ("yaffs_remount_fs: %s: RO\n", dev->name)); -- -- yaffs_GrossLock(dev); -- -- yaffs_FlushEntireDeviceCache(dev); -- -- yaffs_CheckpointSave(dev); -- -- if (mtd->sync) -- mtd->sync(mtd); -- -- yaffs_GrossUnlock(dev); -- } else { -- T(YAFFS_TRACE_OS, -- ("yaffs_remount_fs: %s: RW\n", dev->name)); -- } -- -- return 0; --} --#endif -- --static void yaffs_put_super(struct super_block *sb) --{ -- yaffs_Device *dev = yaffs_SuperToDevice(sb); -- -- T(YAFFS_TRACE_OS, ("yaffs_put_super\n")); -- -- yaffs_GrossLock(dev); -- -- yaffs_FlushEntireDeviceCache(dev); -- -- yaffs_CheckpointSave(dev); -- -- if (dev->putSuperFunc) -- dev->putSuperFunc(sb); -- -- yaffs_Deinitialise(dev); -- -- yaffs_GrossUnlock(dev); -- -- /* we assume this is protected by lock_kernel() in mount/umount */ -- ylist_del(&dev->devList); -- -- if (dev->spareBuffer) { -- YFREE(dev->spareBuffer); -- dev->spareBuffer = NULL; -- } -- -- kfree(dev); --} -- -- --static void yaffs_MTDPutSuper(struct super_block *sb) --{ -- struct mtd_info *mtd = yaffs_SuperToDevice(sb)->genericDevice; -- -- if (mtd->sync) -- mtd->sync(mtd); -- -- put_mtd_device(mtd); --} -- -- --static void yaffs_MarkSuperBlockDirty(void *vsb) --{ -- struct super_block *sb = (struct super_block *)vsb; -- -- T(YAFFS_TRACE_OS, ("yaffs_MarkSuperBlockDirty() sb = %p\n", sb)); -- if (sb) -- sb->s_dirt = 1; --} -- --typedef struct { -- int inband_tags; -- int skip_checkpoint_read; -- int skip_checkpoint_write; -- int no_cache; --} yaffs_options; -- --#define MAX_OPT_LEN 20 --static int yaffs_parse_options(yaffs_options *options, const char *options_str) --{ -- char cur_opt[MAX_OPT_LEN + 1]; -- int p; -- int error = 0; -- -- /* Parse through the options which is a comma seperated list */ -- -- while (options_str && *options_str && !error) { -- memset(cur_opt, 0, MAX_OPT_LEN + 1); -- p = 0; -- -- while (*options_str && *options_str != ',') { -- if (p < MAX_OPT_LEN) { -- cur_opt[p] = *options_str; -- p++; -- } -- options_str++; -- } -- -- if (!strcmp(cur_opt, "inband-tags")) -- options->inband_tags = 1; -- else if (!strcmp(cur_opt, "no-cache")) -- options->no_cache = 1; -- else if (!strcmp(cur_opt, "no-checkpoint-read")) -- options->skip_checkpoint_read = 1; -- else if (!strcmp(cur_opt, "no-checkpoint-write")) -- options->skip_checkpoint_write = 1; -- else if (!strcmp(cur_opt, "no-checkpoint")) { -- options->skip_checkpoint_read = 1; -- options->skip_checkpoint_write = 1; -- } else { -- printk(KERN_INFO "yaffs: Bad mount option \"%s\"\n", -- cur_opt); -- error = 1; -- } -- } -- -- return error; --} -- --static struct super_block *yaffs_internal_read_super(int yaffsVersion, -- struct super_block *sb, -- void *data, int silent) --{ -- int nBlocks; -- struct inode *inode = NULL; -- struct dentry *root; -- yaffs_Device *dev = 0; -- char devname_buf[BDEVNAME_SIZE + 1]; -- struct mtd_info *mtd; -- int err; -- char *data_str = (char *)data; -- -- yaffs_options options; -- -- sb->s_magic = YAFFS_MAGIC; -- sb->s_op = &yaffs_super_ops; -- sb->s_flags |= MS_NOATIME; -- -- if (!sb) -- printk(KERN_INFO "yaffs: sb is NULL\n"); -- else if (!sb->s_dev) -- printk(KERN_INFO "yaffs: sb->s_dev is NULL\n"); -- else if (!yaffs_devname(sb, devname_buf)) -- printk(KERN_INFO "yaffs: devname is NULL\n"); -- else -- printk(KERN_INFO "yaffs: dev is %d name is \"%s\"\n", -- sb->s_dev, -- yaffs_devname(sb, devname_buf)); -- -- if (!data_str) -- data_str = ""; -- -- printk(KERN_INFO "yaffs: passed flags \"%s\"\n", data_str); -- -- memset(&options, 0, sizeof(options)); -- -- if (yaffs_parse_options(&options, data_str)) { -- /* Option parsing failed */ -- return NULL; -- } -- -- -- sb->s_blocksize = PAGE_CACHE_SIZE; -- sb->s_blocksize_bits = PAGE_CACHE_SHIFT; -- T(YAFFS_TRACE_OS, ("yaffs_read_super: Using yaffs%d\n", yaffsVersion)); -- T(YAFFS_TRACE_OS, -- ("yaffs_read_super: block size %d\n", (int)(sb->s_blocksize))); -- --#ifdef CONFIG_YAFFS_DISABLE_WRITE_VERIFY -- T(YAFFS_TRACE_OS, -- ("yaffs: Write verification disabled. All guarantees " -- "null and void\n")); --#endif -- -- T(YAFFS_TRACE_ALWAYS, ("yaffs: Attempting MTD mount on %u.%u, " -- "\"%s\"\n", -- MAJOR(sb->s_dev), MINOR(sb->s_dev), -- yaffs_devname(sb, devname_buf))); -- -- /* Check it's an mtd device..... */ -- if (MAJOR(sb->s_dev) != MTD_BLOCK_MAJOR) -- return NULL; /* This isn't an mtd device */ -- -- /* Get the device */ -- mtd = get_mtd_device(NULL, MINOR(sb->s_dev)); -- if (!mtd) { -- T(YAFFS_TRACE_ALWAYS, -- ("yaffs: MTD device #%u doesn't appear to exist\n", -- MINOR(sb->s_dev))); -- return NULL; -- } -- /* Check it's NAND */ -- if (mtd->type != MTD_NANDFLASH) { -- T(YAFFS_TRACE_ALWAYS, -- ("yaffs: MTD device is not NAND it's type %d\n", mtd->type)); -- return NULL; -- } -- -- T(YAFFS_TRACE_OS, (" erase %p\n", mtd->erase)); -- T(YAFFS_TRACE_OS, (" read %p\n", mtd->read)); -- T(YAFFS_TRACE_OS, (" write %p\n", mtd->write)); -- T(YAFFS_TRACE_OS, (" readoob %p\n", mtd->read_oob)); -- T(YAFFS_TRACE_OS, (" writeoob %p\n", mtd->write_oob)); -- T(YAFFS_TRACE_OS, (" block_isbad %p\n", mtd->block_isbad)); -- T(YAFFS_TRACE_OS, (" block_markbad %p\n", mtd->block_markbad)); -- T(YAFFS_TRACE_OS, (" %s %d\n", WRITE_SIZE_STR, WRITE_SIZE(mtd))); -- T(YAFFS_TRACE_OS, (" oobsize %d\n", mtd->oobsize)); -- T(YAFFS_TRACE_OS, (" erasesize %d\n", mtd->erasesize)); --#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 29) -- T(YAFFS_TRACE_OS, (" size %u\n", mtd->size)); --#else -- T(YAFFS_TRACE_OS, (" size %lld\n", mtd->size)); --#endif -- --#ifdef CONFIG_YAFFS_AUTO_YAFFS2 -- -- if (yaffsVersion == 1 && WRITE_SIZE(mtd) >= 2048) { -- T(YAFFS_TRACE_ALWAYS, ("yaffs: auto selecting yaffs2\n")); -- yaffsVersion = 2; -- } -- -- /* Added NCB 26/5/2006 for completeness */ -- if (yaffsVersion == 2 && !options.inband_tags && WRITE_SIZE(mtd) == 512) { -- T(YAFFS_TRACE_ALWAYS, ("yaffs: auto selecting yaffs1\n")); -- yaffsVersion = 1; -- } -- --#endif -- -- if (yaffsVersion == 2) { -- /* Check for version 2 style functions */ -- if (!mtd->erase || -- !mtd->block_isbad || -- !mtd->block_markbad || -- !mtd->read || -- !mtd->write || --#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) -- !mtd->read_oob || !mtd->write_oob) { --#else -- !mtd->write_ecc || -- !mtd->read_ecc || !mtd->read_oob || !mtd->write_oob) { --#endif -- T(YAFFS_TRACE_ALWAYS, -- ("yaffs: MTD device does not support required " -- "functions\n"));; -- return NULL; -- } -- -- if ((WRITE_SIZE(mtd) < YAFFS_MIN_YAFFS2_CHUNK_SIZE || -- mtd->oobsize < YAFFS_MIN_YAFFS2_SPARE_SIZE) && -- !options.inband_tags) { -- T(YAFFS_TRACE_ALWAYS, -- ("yaffs: MTD device does not have the " -- "right page sizes\n")); -- return NULL; -- } -- } else { -- /* Check for V1 style functions */ -- if (!mtd->erase || -- !mtd->read || -- !mtd->write || --#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) -- !mtd->read_oob || !mtd->write_oob) { --#else -- !mtd->write_ecc || -- !mtd->read_ecc || !mtd->read_oob || !mtd->write_oob) { --#endif -- T(YAFFS_TRACE_ALWAYS, -- ("yaffs: MTD device does not support required " -- "functions\n"));; -- return NULL; -- } -- -- if (WRITE_SIZE(mtd) < YAFFS_BYTES_PER_CHUNK || -- mtd->oobsize != YAFFS_BYTES_PER_SPARE) { -- T(YAFFS_TRACE_ALWAYS, -- ("yaffs: MTD device does not support have the " -- "right page sizes\n")); -- return NULL; -- } -- } -- -- /* OK, so if we got here, we have an MTD that's NAND and looks -- * like it has the right capabilities -- * Set the yaffs_Device up for mtd -- */ -- --#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) -- sb->s_fs_info = dev = kmalloc(sizeof(yaffs_Device), GFP_KERNEL); --#else -- sb->u.generic_sbp = dev = kmalloc(sizeof(yaffs_Device), GFP_KERNEL); --#endif -- if (!dev) { -- /* Deep shit could not allocate device structure */ -- T(YAFFS_TRACE_ALWAYS, -- ("yaffs_read_super: Failed trying to allocate " -- "yaffs_Device. \n")); -- return NULL; -- } -- -- memset(dev, 0, sizeof(yaffs_Device)); -- dev->genericDevice = mtd; -- dev->name = mtd->name; -- -- /* Set up the memory size parameters.... */ -- -- nBlocks = YCALCBLOCKS(mtd->size, (YAFFS_CHUNKS_PER_BLOCK * YAFFS_BYTES_PER_CHUNK)); -- -- dev->startBlock = 0; -- dev->endBlock = nBlocks - 1; -- dev->nChunksPerBlock = YAFFS_CHUNKS_PER_BLOCK; -- dev->totalBytesPerChunk = YAFFS_BYTES_PER_CHUNK; -- dev->nReservedBlocks = 5; -- dev->nShortOpCaches = (options.no_cache) ? 0 : 10; -- dev->inbandTags = options.inband_tags; -- -- /* ... and the functions. */ -- if (yaffsVersion == 2) { -- dev->writeChunkWithTagsToNAND = -- nandmtd2_WriteChunkWithTagsToNAND; -- dev->readChunkWithTagsFromNAND = -- nandmtd2_ReadChunkWithTagsFromNAND; -- dev->markNANDBlockBad = nandmtd2_MarkNANDBlockBad; -- dev->queryNANDBlock = nandmtd2_QueryNANDBlock; -- dev->spareBuffer = YMALLOC(mtd->oobsize); -- dev->isYaffs2 = 1; --#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) -- dev->totalBytesPerChunk = mtd->writesize; -- dev->nChunksPerBlock = mtd->erasesize / mtd->writesize; --#else -- dev->totalBytesPerChunk = mtd->oobblock; -- dev->nChunksPerBlock = mtd->erasesize / mtd->oobblock; --#endif -- nBlocks = YCALCBLOCKS(mtd->size, mtd->erasesize); -- -- dev->startBlock = 0; -- dev->endBlock = nBlocks - 1; -- } else { --#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) -- /* use the MTD interface in yaffs_mtdif1.c */ -- dev->writeChunkWithTagsToNAND = -- nandmtd1_WriteChunkWithTagsToNAND; -- dev->readChunkWithTagsFromNAND = -- nandmtd1_ReadChunkWithTagsFromNAND; -- dev->markNANDBlockBad = nandmtd1_MarkNANDBlockBad; -- dev->queryNANDBlock = nandmtd1_QueryNANDBlock; --#else -- dev->writeChunkToNAND = nandmtd_WriteChunkToNAND; -- dev->readChunkFromNAND = nandmtd_ReadChunkFromNAND; --#endif -- dev->isYaffs2 = 0; -- } -- /* ... and common functions */ -- dev->eraseBlockInNAND = nandmtd_EraseBlockInNAND; -- dev->initialiseNAND = nandmtd_InitialiseNAND; -- -- dev->putSuperFunc = yaffs_MTDPutSuper; -- -- dev->superBlock = (void *)sb; -- dev->markSuperBlockDirty = yaffs_MarkSuperBlockDirty; -- -- --#ifndef CONFIG_YAFFS_DOES_ECC -- dev->useNANDECC = 1; --#endif -- --#ifdef CONFIG_YAFFS_DISABLE_WIDE_TNODES -- dev->wideTnodesDisabled = 1; --#endif -- -- dev->skipCheckpointRead = options.skip_checkpoint_read; -- dev->skipCheckpointWrite = options.skip_checkpoint_write; -- -- /* we assume this is protected by lock_kernel() in mount/umount */ -- ylist_add_tail(&dev->devList, &yaffs_dev_list); -- -- init_MUTEX(&dev->grossLock); -- -- yaffs_GrossLock(dev); -- -- err = yaffs_GutsInitialise(dev); -- -- T(YAFFS_TRACE_OS, -- ("yaffs_read_super: guts initialised %s\n", -- (err == YAFFS_OK) ? "OK" : "FAILED")); -- -- /* Release lock before yaffs_get_inode() */ -- yaffs_GrossUnlock(dev); -- -- /* Create root inode */ -- if (err == YAFFS_OK) -- inode = yaffs_get_inode(sb, S_IFDIR | 0755, 0, -- yaffs_Root(dev)); -- -- if (!inode) -- return NULL; -- -- inode->i_op = &yaffs_dir_inode_operations; -- inode->i_fop = &yaffs_dir_operations; -- -- T(YAFFS_TRACE_OS, ("yaffs_read_super: got root inode\n")); -- -- root = d_alloc_root(inode); -- -- T(YAFFS_TRACE_OS, ("yaffs_read_super: d_alloc_root done\n")); -- -- if (!root) { -- iput(inode); -- return NULL; -- } -- sb->s_root = root; -- sb->s_dirt = !dev->isCheckpointed; -- T(YAFFS_TRACE_ALWAYS, -- ("yaffs_read_super: isCheckpointed %d\n", dev->isCheckpointed)); -- -- T(YAFFS_TRACE_OS, ("yaffs_read_super: done\n")); -- return sb; --} -- -- --#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) --static int yaffs_internal_read_super_mtd(struct super_block *sb, void *data, -- int silent) --{ -- return yaffs_internal_read_super(1, sb, data, silent) ? 0 : -EINVAL; --} -- --#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) --static int yaffs_read_super(struct file_system_type *fs, -- int flags, const char *dev_name, -- void *data, struct vfsmount *mnt) --{ -- -- return get_sb_bdev(fs, flags, dev_name, data, -- yaffs_internal_read_super_mtd, mnt); --} --#else --static struct super_block *yaffs_read_super(struct file_system_type *fs, -- int flags, const char *dev_name, -- void *data) --{ -- -- return get_sb_bdev(fs, flags, dev_name, data, -- yaffs_internal_read_super_mtd); --} --#endif -- --static struct file_system_type yaffs_fs_type = { -- .owner = THIS_MODULE, -- .name = "yaffs", -- .get_sb = yaffs_read_super, -- .kill_sb = kill_block_super, -- .fs_flags = FS_REQUIRES_DEV, --}; --#else --static struct super_block *yaffs_read_super(struct super_block *sb, void *data, -- int silent) --{ -- return yaffs_internal_read_super(1, sb, data, silent); --} -- --static DECLARE_FSTYPE(yaffs_fs_type, "yaffs", yaffs_read_super, -- FS_REQUIRES_DEV); --#endif -- -- --#ifdef CONFIG_YAFFS_YAFFS2 -- --#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) --static int yaffs2_internal_read_super_mtd(struct super_block *sb, void *data, -- int silent) --{ -- return yaffs_internal_read_super(2, sb, data, silent) ? 0 : -EINVAL; --} -- --#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) --static int yaffs2_read_super(struct file_system_type *fs, -- int flags, const char *dev_name, void *data, -- struct vfsmount *mnt) --{ -- return get_sb_bdev(fs, flags, dev_name, data, -- yaffs2_internal_read_super_mtd, mnt); --} --#else --static struct super_block *yaffs2_read_super(struct file_system_type *fs, -- int flags, const char *dev_name, -- void *data) --{ -- -- return get_sb_bdev(fs, flags, dev_name, data, -- yaffs2_internal_read_super_mtd); --} --#endif -- --static struct file_system_type yaffs2_fs_type = { -- .owner = THIS_MODULE, -- .name = "yaffs2", -- .get_sb = yaffs2_read_super, -- .kill_sb = kill_block_super, -- .fs_flags = FS_REQUIRES_DEV, --}; --#else --static struct super_block *yaffs2_read_super(struct super_block *sb, -- void *data, int silent) --{ -- return yaffs_internal_read_super(2, sb, data, silent); --} -- --static DECLARE_FSTYPE(yaffs2_fs_type, "yaffs2", yaffs2_read_super, -- FS_REQUIRES_DEV); --#endif -- --#endif /* CONFIG_YAFFS_YAFFS2 */ -- --static struct proc_dir_entry *my_proc_entry; -- --static char *yaffs_dump_dev(char *buf, yaffs_Device * dev) --{ -- buf += sprintf(buf, "startBlock......... %d\n", dev->startBlock); -- buf += sprintf(buf, "endBlock........... %d\n", dev->endBlock); -- buf += sprintf(buf, "totalBytesPerChunk. %d\n", dev->totalBytesPerChunk); -- buf += sprintf(buf, "nDataBytesPerChunk. %d\n", dev->nDataBytesPerChunk); -- buf += sprintf(buf, "chunkGroupBits..... %d\n", dev->chunkGroupBits); -- buf += sprintf(buf, "chunkGroupSize..... %d\n", dev->chunkGroupSize); -- buf += sprintf(buf, "nErasedBlocks...... %d\n", dev->nErasedBlocks); -- buf += sprintf(buf, "nReservedBlocks.... %d\n", dev->nReservedBlocks); -- buf += sprintf(buf, "blocksInCheckpoint. %d\n", dev->blocksInCheckpoint); -- buf += sprintf(buf, "nTnodesCreated..... %d\n", dev->nTnodesCreated); -- buf += sprintf(buf, "nFreeTnodes........ %d\n", dev->nFreeTnodes); -- buf += sprintf(buf, "nObjectsCreated.... %d\n", dev->nObjectsCreated); -- buf += sprintf(buf, "nFreeObjects....... %d\n", dev->nFreeObjects); -- buf += sprintf(buf, "nFreeChunks........ %d\n", dev->nFreeChunks); -- buf += sprintf(buf, "nPageWrites........ %d\n", dev->nPageWrites); -- buf += sprintf(buf, "nPageReads......... %d\n", dev->nPageReads); -- buf += sprintf(buf, "nBlockErasures..... %d\n", dev->nBlockErasures); -- buf += sprintf(buf, "nGCCopies.......... %d\n", dev->nGCCopies); -- buf += sprintf(buf, "garbageCollections. %d\n", dev->garbageCollections); -- buf += sprintf(buf, "passiveGCs......... %d\n", -- dev->passiveGarbageCollections); -- buf += sprintf(buf, "nRetriedWrites..... %d\n", dev->nRetriedWrites); -- buf += sprintf(buf, "nShortOpCaches..... %d\n", dev->nShortOpCaches); -- buf += sprintf(buf, "nRetireBlocks...... %d\n", dev->nRetiredBlocks); -- buf += sprintf(buf, "eccFixed........... %d\n", dev->eccFixed); -- buf += sprintf(buf, "eccUnfixed......... %d\n", dev->eccUnfixed); -- buf += sprintf(buf, "tagsEccFixed....... %d\n", dev->tagsEccFixed); -- buf += sprintf(buf, "tagsEccUnfixed..... %d\n", dev->tagsEccUnfixed); -- buf += sprintf(buf, "cacheHits.......... %d\n", dev->cacheHits); -- buf += sprintf(buf, "nDeletedFiles...... %d\n", dev->nDeletedFiles); -- buf += sprintf(buf, "nUnlinkedFiles..... %d\n", dev->nUnlinkedFiles); -- buf += -- sprintf(buf, "nBackgroudDeletions %d\n", dev->nBackgroundDeletions); -- buf += sprintf(buf, "useNANDECC......... %d\n", dev->useNANDECC); -- buf += sprintf(buf, "isYaffs2........... %d\n", dev->isYaffs2); -- buf += sprintf(buf, "inbandTags......... %d\n", dev->inbandTags); -- -- return buf; --} -- --static int yaffs_proc_read(char *page, -- char **start, -- off_t offset, int count, int *eof, void *data) --{ -- struct ylist_head *item; -- char *buf = page; -- int step = offset; -- int n = 0; -- -- /* Get proc_file_read() to step 'offset' by one on each sucessive call. -- * We use 'offset' (*ppos) to indicate where we are in devList. -- * This also assumes the user has posted a read buffer large -- * enough to hold the complete output; but that's life in /proc. -- */ -- -- *(int *)start = 1; -- -- /* Print header first */ -- if (step == 0) { -- buf += sprintf(buf, "YAFFS built:" __DATE__ " " __TIME__ -- "\n%s\n%s\n", yaffs_fs_c_version, -- yaffs_guts_c_version); -- } -- -- /* hold lock_kernel while traversing yaffs_dev_list */ -- lock_kernel(); -- -- /* Locate and print the Nth entry. Order N-squared but N is small. */ -- ylist_for_each(item, &yaffs_dev_list) { -- yaffs_Device *dev = ylist_entry(item, yaffs_Device, devList); -- if (n < step) { -- n++; -- continue; -- } -- buf += sprintf(buf, "\nDevice %d \"%s\"\n", n, dev->name); -- buf = yaffs_dump_dev(buf, dev); -- break; -- } -- unlock_kernel(); -- -- return buf - page < count ? buf - page : count; --} -- --/** -- * Set the verbosity of the warnings and error messages. -- * -- * Note that the names can only be a..z or _ with the current code. -- */ -- --static struct { -- char *mask_name; -- unsigned mask_bitfield; --} mask_flags[] = { -- {"allocate", YAFFS_TRACE_ALLOCATE}, -- {"always", YAFFS_TRACE_ALWAYS}, -- {"bad_blocks", YAFFS_TRACE_BAD_BLOCKS}, -- {"buffers", YAFFS_TRACE_BUFFERS}, -- {"bug", YAFFS_TRACE_BUG}, -- {"checkpt", YAFFS_TRACE_CHECKPOINT}, -- {"deletion", YAFFS_TRACE_DELETION}, -- {"erase", YAFFS_TRACE_ERASE}, -- {"error", YAFFS_TRACE_ERROR}, -- {"gc_detail", YAFFS_TRACE_GC_DETAIL}, -- {"gc", YAFFS_TRACE_GC}, -- {"mtd", YAFFS_TRACE_MTD}, -- {"nandaccess", YAFFS_TRACE_NANDACCESS}, -- {"os", YAFFS_TRACE_OS}, -- {"scan_debug", YAFFS_TRACE_SCAN_DEBUG}, -- {"scan", YAFFS_TRACE_SCAN}, -- {"tracing", YAFFS_TRACE_TRACING}, -- -- {"verify", YAFFS_TRACE_VERIFY}, -- {"verify_nand", YAFFS_TRACE_VERIFY_NAND}, -- {"verify_full", YAFFS_TRACE_VERIFY_FULL}, -- {"verify_all", YAFFS_TRACE_VERIFY_ALL}, -- -- {"write", YAFFS_TRACE_WRITE}, -- {"all", 0xffffffff}, -- {"none", 0}, -- {NULL, 0}, --}; -- --#define MAX_MASK_NAME_LENGTH 40 --static int yaffs_proc_write(struct file *file, const char *buf, -- unsigned long count, void *data) --{ -- unsigned rg = 0, mask_bitfield; -- char *end; -- char *mask_name; -- const char *x; -- char substring[MAX_MASK_NAME_LENGTH + 1]; -- int i; -- int done = 0; -- int add, len = 0; -- int pos = 0; -- -- rg = yaffs_traceMask; -- -- while (!done && (pos < count)) { -- done = 1; -- while ((pos < count) && isspace(buf[pos])) -- pos++; -- -- switch (buf[pos]) { -- case '+': -- case '-': -- case '=': -- add = buf[pos]; -- pos++; -- break; -- -- default: -- add = ' '; -- break; -- } -- mask_name = NULL; -- -- mask_bitfield = simple_strtoul(buf + pos, &end, 0); -- -- if (end > buf + pos) { -- mask_name = "numeral"; -- len = end - (buf + pos); -- pos += len; -- done = 0; -- } else { -- for (x = buf + pos, i = 0; -- (*x == '_' || (*x >= 'a' && *x <= 'z')) && -- i < MAX_MASK_NAME_LENGTH; x++, i++, pos++) -- substring[i] = *x; -- substring[i] = '\0'; -- -- for (i = 0; mask_flags[i].mask_name != NULL; i++) { -- if (strcmp(substring, mask_flags[i].mask_name) == 0) { -- mask_name = mask_flags[i].mask_name; -- mask_bitfield = mask_flags[i].mask_bitfield; -- done = 0; -- break; -- } -- } -- } -- -- if (mask_name != NULL) { -- done = 0; -- switch (add) { -- case '-': -- rg &= ~mask_bitfield; -- break; -- case '+': -- rg |= mask_bitfield; -- break; -- case '=': -- rg = mask_bitfield; -- break; -- default: -- rg |= mask_bitfield; -- break; -- } -- } -- } -- -- yaffs_traceMask = rg | YAFFS_TRACE_ALWAYS; -- -- printk(KERN_DEBUG "new trace = 0x%08X\n", yaffs_traceMask); -- -- if (rg & YAFFS_TRACE_ALWAYS) { -- for (i = 0; mask_flags[i].mask_name != NULL; i++) { -- char flag; -- flag = ((rg & mask_flags[i].mask_bitfield) == mask_flags[i].mask_bitfield) ? '+' : '-'; -- printk(KERN_DEBUG "%c%s\n", flag, mask_flags[i].mask_name); -- } -- } -- -- return count; --} -- --/* Stuff to handle installation of file systems */ --struct file_system_to_install { -- struct file_system_type *fst; -- int installed; --}; -- --static struct file_system_to_install fs_to_install[] = { -- {&yaffs_fs_type, 0}, -- {&yaffs2_fs_type, 0}, -- {NULL, 0} --}; -- --static int __init init_yaffs_fs(void) --{ -- int error = 0; -- struct file_system_to_install *fsinst; -- -- T(YAFFS_TRACE_ALWAYS, -- ("yaffs " __DATE__ " " __TIME__ " Installing. \n")); -- -- /* Install the proc_fs entry */ -- my_proc_entry = create_proc_entry("yaffs", -- S_IRUGO | S_IFREG, -- YPROC_ROOT); -- -- if (my_proc_entry) { -- my_proc_entry->write_proc = yaffs_proc_write; -- my_proc_entry->read_proc = yaffs_proc_read; -- my_proc_entry->data = NULL; -- } else -- return -ENOMEM; -- -- /* Now add the file system entries */ -- -- fsinst = fs_to_install; -- -- while (fsinst->fst && !error) { -- error = register_filesystem(fsinst->fst); -- if (!error) -- fsinst->installed = 1; -- fsinst++; -- } -- -- /* Any errors? uninstall */ -- if (error) { -- fsinst = fs_to_install; -- -- while (fsinst->fst) { -- if (fsinst->installed) { -- unregister_filesystem(fsinst->fst); -- fsinst->installed = 0; -- } -- fsinst++; -- } -- } -- -- return error; --} -- --static void __exit exit_yaffs_fs(void) --{ -- -- struct file_system_to_install *fsinst; -- -- T(YAFFS_TRACE_ALWAYS, ("yaffs " __DATE__ " " __TIME__ -- " removing. \n")); -- -- remove_proc_entry("yaffs", YPROC_ROOT); -- -- fsinst = fs_to_install; -- -- while (fsinst->fst) { -- if (fsinst->installed) { -- unregister_filesystem(fsinst->fst); -- fsinst->installed = 0; -- } -- fsinst++; -- } --} -- --module_init(init_yaffs_fs) --module_exit(exit_yaffs_fs) -- --MODULE_DESCRIPTION("YAFFS2 - a NAND specific flash file system"); --MODULE_AUTHOR("Charles Manning, Aleph One Ltd., 2002-2006"); --MODULE_LICENSE("GPL"); ---- a/fs/yaffs2/yaffs_getblockinfo.h -+++ b/fs/yaffs2/yaffs_getblockinfo.h -@@ -1,7 +1,7 @@ - /* - * YAFFS: Yet another Flash File System . A NAND-flash specific file system. - * -- * Copyright (C) 2002-2007 Aleph One Ltd. -+ * Copyright (C) 2002-2010 Aleph One Ltd. - * for Toby Churchill Ltd and Brightstar Engineering - * - * Created by Charles Manning <charles@aleph1.co.uk> -@@ -17,18 +17,19 @@ - #define __YAFFS_GETBLOCKINFO_H__ - - #include "yaffs_guts.h" -+#include "yaffs_trace.h" - - /* Function to manipulate block info */ --static Y_INLINE yaffs_BlockInfo *yaffs_GetBlockInfo(yaffs_Device * dev, int blk) -+static Y_INLINE yaffs_block_info_t *yaffs_get_block_info(yaffs_dev_t * dev, int blk) - { -- if (blk < dev->internalStartBlock || blk > dev->internalEndBlock) { -+ if (blk < dev->internal_start_block || blk > dev->internal_end_block) { - T(YAFFS_TRACE_ERROR, - (TSTR - ("**>> yaffs: getBlockInfo block %d is not valid" TENDSTR), - blk)); - YBUG(); - } -- return &dev->blockInfo[blk - dev->internalStartBlock]; -+ return &dev->block_info[blk - dev->internal_start_block]; - } - - #endif ---- a/fs/yaffs2/yaffs_guts.c -+++ b/fs/yaffs2/yaffs_guts.c -@@ -1,7 +1,7 @@ - /* - * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. - * -- * Copyright (C) 2002-2007 Aleph One Ltd. -+ * Copyright (C) 2002-2010 Aleph One Ltd. - * for Toby Churchill Ltd and Brightstar Engineering - * - * Created by Charles Manning <charles@aleph1.co.uk> -@@ -10,11 +10,8 @@ - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - */ -- --const char *yaffs_guts_c_version = -- "$Id: yaffs_guts.c,v 1.82 2009-03-09 04:24:17 charles Exp $"; -- - #include "yportenv.h" -+#include "yaffs_trace.h" - - #include "yaffsinterface.h" - #include "yaffs_guts.h" -@@ -22,118 +19,109 @@ const char *yaffs_guts_c_version = - #include "yaffs_getblockinfo.h" - - #include "yaffs_tagscompat.h" --#ifndef CONFIG_YAFFS_USE_OWN_SORT --#include "yaffs_qsort.h" --#endif -+ - #include "yaffs_nand.h" - --#include "yaffs_checkptrw.h" -+#include "yaffs_yaffs1.h" -+#include "yaffs_yaffs2.h" -+#include "yaffs_bitmap.h" -+#include "yaffs_verify.h" - - #include "yaffs_nand.h" - #include "yaffs_packedtags2.h" - -+#include "yaffs_nameval.h" -+#include "yaffs_allocator.h" - --#define YAFFS_PASSIVE_GC_CHUNKS 2 -+/* Note YAFFS_GC_GOOD_ENOUGH must be <= YAFFS_GC_PASSIVE_THRESHOLD */ -+#define YAFFS_GC_GOOD_ENOUGH 2 -+#define YAFFS_GC_PASSIVE_THRESHOLD 4 - - #include "yaffs_ecc.h" - - -+ - /* Robustification (if it ever comes about...) */ --static void yaffs_RetireBlock(yaffs_Device *dev, int blockInNAND); --static void yaffs_HandleWriteChunkError(yaffs_Device *dev, int chunkInNAND, -+static void yaffs_retire_block(yaffs_dev_t *dev, int flash_block); -+static void yaffs_handle_chunk_wr_error(yaffs_dev_t *dev, int nand_chunk, - int erasedOk); --static void yaffs_HandleWriteChunkOk(yaffs_Device *dev, int chunkInNAND, -+static void yaffs_handle_chunk_wr_ok(yaffs_dev_t *dev, int nand_chunk, - const __u8 *data, -- const yaffs_ExtendedTags *tags); --static void yaffs_HandleUpdateChunk(yaffs_Device *dev, int chunkInNAND, -- const yaffs_ExtendedTags *tags); -+ const yaffs_ext_tags *tags); -+static void yaffs_handle_chunk_update(yaffs_dev_t *dev, int nand_chunk, -+ const yaffs_ext_tags *tags); - - /* Other local prototypes */ --static int yaffs_UnlinkObject(yaffs_Object *obj); --static int yaffs_ObjectHasCachedWriteData(yaffs_Object *obj); -- --static void yaffs_HardlinkFixup(yaffs_Device *dev, yaffs_Object *hardList); -+static void yaffs_update_parent(yaffs_obj_t *obj); -+static int yaffs_unlink_obj(yaffs_obj_t *obj); -+static int yaffs_obj_cache_dirty(yaffs_obj_t *obj); - --static int yaffs_WriteNewChunkWithTagsToNAND(yaffs_Device *dev, -+static int yaffs_write_new_chunk(yaffs_dev_t *dev, - const __u8 *buffer, -- yaffs_ExtendedTags *tags, -+ yaffs_ext_tags *tags, - int useReserve); --static int yaffs_PutChunkIntoFile(yaffs_Object *in, int chunkInInode, -- int chunkInNAND, int inScan); - --static yaffs_Object *yaffs_CreateNewObject(yaffs_Device *dev, int number, -- yaffs_ObjectType type); --static void yaffs_AddObjectToDirectory(yaffs_Object *directory, -- yaffs_Object *obj); --static int yaffs_UpdateObjectHeader(yaffs_Object *in, const YCHAR *name, -- int force, int isShrink, int shadows); --static void yaffs_RemoveObjectFromDirectory(yaffs_Object *obj); --static int yaffs_CheckStructures(void); --static int yaffs_DeleteWorker(yaffs_Object *in, yaffs_Tnode *tn, __u32 level, -- int chunkOffset, int *limit); --static int yaffs_DoGenericObjectDeletion(yaffs_Object *in); -- --static yaffs_BlockInfo *yaffs_GetBlockInfo(yaffs_Device *dev, int blockNo); - -+static yaffs_obj_t *yaffs_new_obj(yaffs_dev_t *dev, int number, -+ yaffs_obj_type type); - --static int yaffs_CheckChunkErased(struct yaffs_DeviceStruct *dev, -- int chunkInNAND); - --static int yaffs_UnlinkWorker(yaffs_Object *obj); -+static int yaffs_apply_xattrib_mod(yaffs_obj_t *obj, char *buffer, yaffs_xattr_mod *xmod); - --static int yaffs_TagsMatch(const yaffs_ExtendedTags *tags, int objectId, -- int chunkInObject); -+static void yaffs_remove_obj_from_dir(yaffs_obj_t *obj); -+static int yaffs_check_structures(void); -+static int yaffs_generic_obj_del(yaffs_obj_t *in); -+ -+static int yaffs_check_chunk_erased(struct yaffs_dev_s *dev, -+ int nand_chunk); - --static int yaffs_AllocateChunk(yaffs_Device *dev, int useReserve, -- yaffs_BlockInfo **blockUsedPtr); -+static int yaffs_unlink_worker(yaffs_obj_t *obj); - --static void yaffs_VerifyFreeChunks(yaffs_Device *dev); -+static int yaffs_tags_match(const yaffs_ext_tags *tags, int obj_id, -+ int chunkInObject); - --static void yaffs_CheckObjectDetailsLoaded(yaffs_Object *in); -+static int yaffs_alloc_chunk(yaffs_dev_t *dev, int useReserve, -+ yaffs_block_info_t **blockUsedPtr); - --static void yaffs_VerifyDirectory(yaffs_Object *directory); --#ifdef YAFFS_PARANOID --static int yaffs_CheckFileSanity(yaffs_Object *in); --#else --#define yaffs_CheckFileSanity(in) --#endif -+static void yaffs_check_obj_details_loaded(yaffs_obj_t *in); -+ -+static void yaffs_invalidate_whole_cache(yaffs_obj_t *in); -+static void yaffs_invalidate_chunk_cache(yaffs_obj_t *object, int chunk_id); - --static void yaffs_InvalidateWholeChunkCache(yaffs_Object *in); --static void yaffs_InvalidateChunkCache(yaffs_Object *object, int chunkId); -+static int yaffs_find_chunk_in_file(yaffs_obj_t *in, int inode_chunk, -+ yaffs_ext_tags *tags); - --static void yaffs_InvalidateCheckpoint(yaffs_Device *dev); -+static int yaffs_verify_chunk_written(yaffs_dev_t *dev, -+ int nand_chunk, -+ const __u8 *data, -+ yaffs_ext_tags *tags); - --static int yaffs_FindChunkInFile(yaffs_Object *in, int chunkInInode, -- yaffs_ExtendedTags *tags); - --static __u32 yaffs_GetChunkGroupBase(yaffs_Device *dev, yaffs_Tnode *tn, -- unsigned pos); --static yaffs_Tnode *yaffs_FindLevel0Tnode(yaffs_Device *dev, -- yaffs_FileStructure *fStruct, -- __u32 chunkId); -+static void yaffs_load_name_from_oh(yaffs_dev_t *dev,YCHAR *name, const YCHAR *ohName, int bufferSize); -+static void yaffs_load_oh_from_name(yaffs_dev_t *dev,YCHAR *ohName, const YCHAR *name); - - - /* Function to calculate chunk and offset */ - --static void yaffs_AddrToChunk(yaffs_Device *dev, loff_t addr, int *chunkOut, -+static void yaffs_addr_to_chunk(yaffs_dev_t *dev, loff_t addr, int *chunkOut, - __u32 *offsetOut) - { - int chunk; - __u32 offset; - -- chunk = (__u32)(addr >> dev->chunkShift); -+ chunk = (__u32)(addr >> dev->chunk_shift); - -- if (dev->chunkDiv == 1) { -+ if (dev->chunk_div == 1) { - /* easy power of 2 case */ -- offset = (__u32)(addr & dev->chunkMask); -+ offset = (__u32)(addr & dev->chunk_mask); - } else { - /* Non power-of-2 case */ - - loff_t chunkBase; - -- chunk /= dev->chunkDiv; -+ chunk /= dev->chunk_div; - -- chunkBase = ((loff_t)chunk) * dev->nDataBytesPerChunk; -+ chunkBase = ((loff_t)chunk) * dev->data_bytes_per_chunk; - offset = (__u32)(addr - chunkBase); - } - -@@ -172,7 +160,7 @@ static __u32 ShiftsGE(__u32 x) - - static __u32 Shifts(__u32 x) - { -- int nShifts; -+ __u32 nShifts; - - nShifts = 0; - -@@ -193,49 +181,49 @@ static __u32 Shifts(__u32 x) - * Temporary buffer manipulations. - */ - --static int yaffs_InitialiseTempBuffers(yaffs_Device *dev) -+static int yaffs_init_tmp_buffers(yaffs_dev_t *dev) - { - int i; - __u8 *buf = (__u8 *)1; - -- memset(dev->tempBuffer, 0, sizeof(dev->tempBuffer)); -+ memset(dev->temp_buffer, 0, sizeof(dev->temp_buffer)); - - for (i = 0; buf && i < YAFFS_N_TEMP_BUFFERS; i++) { -- dev->tempBuffer[i].line = 0; /* not in use */ -- dev->tempBuffer[i].buffer = buf = -- YMALLOC_DMA(dev->totalBytesPerChunk); -+ dev->temp_buffer[i].line = 0; /* not in use */ -+ dev->temp_buffer[i].buffer = buf = -+ YMALLOC_DMA(dev->param.total_bytes_per_chunk); - } - - return buf ? YAFFS_OK : YAFFS_FAIL; - } - --__u8 *yaffs_GetTempBuffer(yaffs_Device *dev, int lineNo) -+__u8 *yaffs_get_temp_buffer(yaffs_dev_t *dev, int line_no) - { - int i, j; - -- dev->tempInUse++; -- if (dev->tempInUse > dev->maxTemp) -- dev->maxTemp = dev->tempInUse; -+ dev->temp_in_use++; -+ if (dev->temp_in_use > dev->max_temp) -+ dev->max_temp = dev->temp_in_use; - - for (i = 0; i < YAFFS_N_TEMP_BUFFERS; i++) { -- if (dev->tempBuffer[i].line == 0) { -- dev->tempBuffer[i].line = lineNo; -- if ((i + 1) > dev->maxTemp) { -- dev->maxTemp = i + 1; -+ if (dev->temp_buffer[i].line == 0) { -+ dev->temp_buffer[i].line = line_no; -+ if ((i + 1) > dev->max_temp) { -+ dev->max_temp = i + 1; - for (j = 0; j <= i; j++) -- dev->tempBuffer[j].maxLine = -- dev->tempBuffer[j].line; -+ dev->temp_buffer[j].max_line = -+ dev->temp_buffer[j].line; - } - -- return dev->tempBuffer[i].buffer; -+ return dev->temp_buffer[i].buffer; - } - } - - T(YAFFS_TRACE_BUFFERS, - (TSTR("Out of temp buffers at line %d, other held by lines:"), -- lineNo)); -+ line_no)); - for (i = 0; i < YAFFS_N_TEMP_BUFFERS; i++) -- T(YAFFS_TRACE_BUFFERS, (TSTR(" %d "), dev->tempBuffer[i].line)); -+ T(YAFFS_TRACE_BUFFERS, (TSTR(" %d "), dev->temp_buffer[i].line)); - - T(YAFFS_TRACE_BUFFERS, (TSTR(" " TENDSTR))); - -@@ -244,21 +232,21 @@ __u8 *yaffs_GetTempBuffer(yaffs_Device * - * This is not good. - */ - -- dev->unmanagedTempAllocations++; -- return YMALLOC(dev->nDataBytesPerChunk); -+ dev->unmanaged_buffer_allocs++; -+ return YMALLOC(dev->data_bytes_per_chunk); - - } - --void yaffs_ReleaseTempBuffer(yaffs_Device *dev, __u8 *buffer, -- int lineNo) -+void yaffs_release_temp_buffer(yaffs_dev_t *dev, __u8 *buffer, -+ int line_no) - { - int i; - -- dev->tempInUse--; -+ dev->temp_in_use--; - - for (i = 0; i < YAFFS_N_TEMP_BUFFERS; i++) { -- if (dev->tempBuffer[i].buffer == buffer) { -- dev->tempBuffer[i].line = 0; -+ if (dev->temp_buffer[i].buffer == buffer) { -+ dev->temp_buffer[i].line = 0; - return; - } - } -@@ -267,9 +255,9 @@ void yaffs_ReleaseTempBuffer(yaffs_Devic - /* assume it is an unmanaged one. */ - T(YAFFS_TRACE_BUFFERS, - (TSTR("Releasing unmanaged temp buffer in line %d" TENDSTR), -- lineNo)); -+ line_no)); - YFREE(buffer); -- dev->unmanagedTempDeallocations++; -+ dev->unmanaged_buffer_deallocs++; - } - - } -@@ -277,21 +265,21 @@ void yaffs_ReleaseTempBuffer(yaffs_Devic - /* - * Determine if we have a managed buffer. - */ --int yaffs_IsManagedTempBuffer(yaffs_Device *dev, const __u8 *buffer) -+int yaffs_is_managed_tmp_buffer(yaffs_dev_t *dev, const __u8 *buffer) - { - int i; - - for (i = 0; i < YAFFS_N_TEMP_BUFFERS; i++) { -- if (dev->tempBuffer[i].buffer == buffer) -+ if (dev->temp_buffer[i].buffer == buffer) - return 1; - } - -- for (i = 0; i < dev->nShortOpCaches; i++) { -- if (dev->srCache[i].data == buffer) -+ for (i = 0; i < dev->param.n_caches; i++) { -+ if (dev->cache[i].data == buffer) - return 1; - } - -- if (buffer == dev->checkpointBuffer) -+ if (buffer == dev->checkpt_buffer) - return 1; - - T(YAFFS_TRACE_ALWAYS, -@@ -299,6397 +287,4205 @@ int yaffs_IsManagedTempBuffer(yaffs_Devi - return 0; - } - -- -- - /* -- * Chunk bitmap manipulations -+ * Verification code - */ - --static Y_INLINE __u8 *yaffs_BlockBits(yaffs_Device *dev, int blk) --{ -- if (blk < dev->internalStartBlock || blk > dev->internalEndBlock) { -- T(YAFFS_TRACE_ERROR, -- (TSTR("**>> yaffs: BlockBits block %d is not valid" TENDSTR), -- blk)); -- YBUG(); -- } -- return dev->chunkBits + -- (dev->chunkBitmapStride * (blk - dev->internalStartBlock)); --} - --static Y_INLINE void yaffs_VerifyChunkBitId(yaffs_Device *dev, int blk, int chunk) --{ -- if (blk < dev->internalStartBlock || blk > dev->internalEndBlock || -- chunk < 0 || chunk >= dev->nChunksPerBlock) { -- T(YAFFS_TRACE_ERROR, -- (TSTR("**>> yaffs: Chunk Id (%d:%d) invalid"TENDSTR), -- blk, chunk)); -- YBUG(); -- } --} - --static Y_INLINE void yaffs_ClearChunkBits(yaffs_Device *dev, int blk) --{ -- __u8 *blkBits = yaffs_BlockBits(dev, blk); - -- memset(blkBits, 0, dev->chunkBitmapStride); --} -+/* -+ * Simple hash function. Needs to have a reasonable spread -+ */ - --static Y_INLINE void yaffs_ClearChunkBit(yaffs_Device *dev, int blk, int chunk) -+static Y_INLINE int yaffs_hash_fn(int n) - { -- __u8 *blkBits = yaffs_BlockBits(dev, blk); -- -- yaffs_VerifyChunkBitId(dev, blk, chunk); -- -- blkBits[chunk / 8] &= ~(1 << (chunk & 7)); -+ n = abs(n); -+ return n % YAFFS_NOBJECT_BUCKETS; - } - --static Y_INLINE void yaffs_SetChunkBit(yaffs_Device *dev, int blk, int chunk) --{ -- __u8 *blkBits = yaffs_BlockBits(dev, blk); -- -- yaffs_VerifyChunkBitId(dev, blk, chunk); -- -- blkBits[chunk / 8] |= (1 << (chunk & 7)); --} -+/* -+ * Access functions to useful fake objects. -+ * Note that root might have a presence in NAND if permissions are set. -+ */ - --static Y_INLINE int yaffs_CheckChunkBit(yaffs_Device *dev, int blk, int chunk) -+yaffs_obj_t *yaffs_root(yaffs_dev_t *dev) - { -- __u8 *blkBits = yaffs_BlockBits(dev, blk); -- yaffs_VerifyChunkBitId(dev, blk, chunk); -- -- return (blkBits[chunk / 8] & (1 << (chunk & 7))) ? 1 : 0; -+ return dev->root_dir; - } - --static Y_INLINE int yaffs_StillSomeChunkBits(yaffs_Device *dev, int blk) -+yaffs_obj_t *yaffs_lost_n_found(yaffs_dev_t *dev) - { -- __u8 *blkBits = yaffs_BlockBits(dev, blk); -- int i; -- for (i = 0; i < dev->chunkBitmapStride; i++) { -- if (*blkBits) -- return 1; -- blkBits++; -- } -- return 0; -+ return dev->lost_n_found; - } - --static int yaffs_CountChunkBits(yaffs_Device *dev, int blk) --{ -- __u8 *blkBits = yaffs_BlockBits(dev, blk); -- int i; -- int n = 0; -- for (i = 0; i < dev->chunkBitmapStride; i++) { -- __u8 x = *blkBits; -- while (x) { -- if (x & 1) -- n++; -- x >>= 1; -- } -- -- blkBits++; -- } -- return n; --} - - /* -- * Verification code -+ * Erased NAND checking functions - */ - --static int yaffs_SkipVerification(yaffs_Device *dev) --{ -- return !(yaffs_traceMask & (YAFFS_TRACE_VERIFY | YAFFS_TRACE_VERIFY_FULL)); --} -- --static int yaffs_SkipFullVerification(yaffs_Device *dev) --{ -- return !(yaffs_traceMask & (YAFFS_TRACE_VERIFY_FULL)); --} -- --static int yaffs_SkipNANDVerification(yaffs_Device *dev) -+int yaffs_check_ff(__u8 *buffer, int n_bytes) - { -- return !(yaffs_traceMask & (YAFFS_TRACE_VERIFY_NAND)); -+ /* Horrible, slow implementation */ -+ while (n_bytes--) { -+ if (*buffer != 0xFF) -+ return 0; -+ buffer++; -+ } -+ return 1; - } - --static const char *blockStateName[] = { --"Unknown", --"Needs scanning", --"Scanning", --"Empty", --"Allocating", --"Full", --"Dirty", --"Checkpoint", --"Collecting", --"Dead" --}; -- --static void yaffs_VerifyBlock(yaffs_Device *dev, yaffs_BlockInfo *bi, int n) -+static int yaffs_check_chunk_erased(struct yaffs_dev_s *dev, -+ int nand_chunk) - { -- int actuallyUsed; -- int inUse; -+ int retval = YAFFS_OK; -+ __u8 *data = yaffs_get_temp_buffer(dev, __LINE__); -+ yaffs_ext_tags tags; -+ int result; - -- if (yaffs_SkipVerification(dev)) -- return; -+ result = yaffs_rd_chunk_tags_nand(dev, nand_chunk, data, &tags); - -- /* Report illegal runtime states */ -- if (bi->blockState >= YAFFS_NUMBER_OF_BLOCK_STATES) -- T(YAFFS_TRACE_VERIFY, (TSTR("Block %d has undefined state %d"TENDSTR), n, bi->blockState)); -+ if (tags.ecc_result > YAFFS_ECC_RESULT_NO_ERROR) -+ retval = YAFFS_FAIL; - -- switch (bi->blockState) { -- case YAFFS_BLOCK_STATE_UNKNOWN: -- case YAFFS_BLOCK_STATE_SCANNING: -- case YAFFS_BLOCK_STATE_NEEDS_SCANNING: -- T(YAFFS_TRACE_VERIFY, (TSTR("Block %d has bad run-state %s"TENDSTR), -- n, blockStateName[bi->blockState])); -+ if (!yaffs_check_ff(data, dev->data_bytes_per_chunk) || tags.chunk_used) { -+ T(YAFFS_TRACE_NANDACCESS, -+ (TSTR("Chunk %d not erased" TENDSTR), nand_chunk)); -+ retval = YAFFS_FAIL; - } - -- /* Check pages in use and soft deletions are legal */ -- -- actuallyUsed = bi->pagesInUse - bi->softDeletions; -- -- if (bi->pagesInUse < 0 || bi->pagesInUse > dev->nChunksPerBlock || -- bi->softDeletions < 0 || bi->softDeletions > dev->nChunksPerBlock || -- actuallyUsed < 0 || actuallyUsed > dev->nChunksPerBlock) -- T(YAFFS_TRACE_VERIFY, (TSTR("Block %d has illegal values pagesInUsed %d softDeletions %d"TENDSTR), -- n, bi->pagesInUse, bi->softDeletions)); -- -+ yaffs_release_temp_buffer(dev, data, __LINE__); - -- /* Check chunk bitmap legal */ -- inUse = yaffs_CountChunkBits(dev, n); -- if (inUse != bi->pagesInUse) -- T(YAFFS_TRACE_VERIFY, (TSTR("Block %d has inconsistent values pagesInUse %d counted chunk bits %d"TENDSTR), -- n, bi->pagesInUse, inUse)); -+ return retval; - -- /* Check that the sequence number is valid. -- * Ten million is legal, but is very unlikely -- */ -- if (dev->isYaffs2 && -- (bi->blockState == YAFFS_BLOCK_STATE_ALLOCATING || bi->blockState == YAFFS_BLOCK_STATE_FULL) && -- (bi->sequenceNumber < YAFFS_LOWEST_SEQUENCE_NUMBER || bi->sequenceNumber > 10000000)) -- T(YAFFS_TRACE_VERIFY, (TSTR("Block %d has suspect sequence number of %d"TENDSTR), -- n, bi->sequenceNumber)); - } - --static void yaffs_VerifyCollectedBlock(yaffs_Device *dev, yaffs_BlockInfo *bi, -- int n) -+ -+static int yaffs_verify_chunk_written(yaffs_dev_t *dev, -+ int nand_chunk, -+ const __u8 *data, -+ yaffs_ext_tags *tags) - { -- yaffs_VerifyBlock(dev, bi, n); -+ int retval = YAFFS_OK; -+ yaffs_ext_tags tempTags; -+ __u8 *buffer = yaffs_get_temp_buffer(dev,__LINE__); -+ int result; -+ -+ result = yaffs_rd_chunk_tags_nand(dev,nand_chunk,buffer,&tempTags); -+ if(memcmp(buffer,data,dev->data_bytes_per_chunk) || -+ tempTags.obj_id != tags->obj_id || -+ tempTags.chunk_id != tags->chunk_id || -+ tempTags.n_bytes != tags->n_bytes) -+ retval = YAFFS_FAIL; - -- /* After collection the block should be in the erased state */ -- /* This will need to change if we do partial gc */ -+ yaffs_release_temp_buffer(dev, buffer, __LINE__); - -- if (bi->blockState != YAFFS_BLOCK_STATE_COLLECTING && -- bi->blockState != YAFFS_BLOCK_STATE_EMPTY) { -- T(YAFFS_TRACE_ERROR, (TSTR("Block %d is in state %d after gc, should be erased"TENDSTR), -- n, bi->blockState)); -- } -+ return retval; - } - --static void yaffs_VerifyBlocks(yaffs_Device *dev) -+static int yaffs_write_new_chunk(struct yaffs_dev_s *dev, -+ const __u8 *data, -+ yaffs_ext_tags *tags, -+ int useReserve) - { -- int i; -- int nBlocksPerState[YAFFS_NUMBER_OF_BLOCK_STATES]; -- int nIllegalBlockStates = 0; -- -- if (yaffs_SkipVerification(dev)) -- return; -- -- memset(nBlocksPerState, 0, sizeof(nBlocksPerState)); -- -- for (i = dev->internalStartBlock; i <= dev->internalEndBlock; i++) { -- yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, i); -- yaffs_VerifyBlock(dev, bi, i); -- -- if (bi->blockState < YAFFS_NUMBER_OF_BLOCK_STATES) -- nBlocksPerState[bi->blockState]++; -- else -- nIllegalBlockStates++; -- } -+ int attempts = 0; -+ int writeOk = 0; -+ int chunk; - -- T(YAFFS_TRACE_VERIFY, (TSTR(""TENDSTR))); -- T(YAFFS_TRACE_VERIFY, (TSTR("Block summary"TENDSTR))); -+ yaffs2_checkpt_invalidate(dev); - -- T(YAFFS_TRACE_VERIFY, (TSTR("%d blocks have illegal states"TENDSTR), nIllegalBlockStates)); -- if (nBlocksPerState[YAFFS_BLOCK_STATE_ALLOCATING] > 1) -- T(YAFFS_TRACE_VERIFY, (TSTR("Too many allocating blocks"TENDSTR))); -+ do { -+ yaffs_block_info_t *bi = 0; -+ int erasedOk = 0; - -- for (i = 0; i < YAFFS_NUMBER_OF_BLOCK_STATES; i++) -- T(YAFFS_TRACE_VERIFY, -- (TSTR("%s %d blocks"TENDSTR), -- blockStateName[i], nBlocksPerState[i])); -+ chunk = yaffs_alloc_chunk(dev, useReserve, &bi); -+ if (chunk < 0) { -+ /* no space */ -+ break; -+ } - -- if (dev->blocksInCheckpoint != nBlocksPerState[YAFFS_BLOCK_STATE_CHECKPOINT]) -- T(YAFFS_TRACE_VERIFY, -- (TSTR("Checkpoint block count wrong dev %d count %d"TENDSTR), -- dev->blocksInCheckpoint, nBlocksPerState[YAFFS_BLOCK_STATE_CHECKPOINT])); -+ /* First check this chunk is erased, if it needs -+ * checking. The checking policy (unless forced -+ * always on) is as follows: -+ * -+ * Check the first page we try to write in a block. -+ * If the check passes then we don't need to check any -+ * more. If the check fails, we check again... -+ * If the block has been erased, we don't need to check. -+ * -+ * However, if the block has been prioritised for gc, -+ * then we think there might be something odd about -+ * this block and stop using it. -+ * -+ * Rationale: We should only ever see chunks that have -+ * not been erased if there was a partially written -+ * chunk due to power loss. This checking policy should -+ * catch that case with very few checks and thus save a -+ * lot of checks that are most likely not needed. -+ * -+ * Mods to the above -+ * If an erase check fails or the write fails we skip the -+ * rest of the block. -+ */ - -- if (dev->nErasedBlocks != nBlocksPerState[YAFFS_BLOCK_STATE_EMPTY]) -- T(YAFFS_TRACE_VERIFY, -- (TSTR("Erased block count wrong dev %d count %d"TENDSTR), -- dev->nErasedBlocks, nBlocksPerState[YAFFS_BLOCK_STATE_EMPTY])); -+ /* let's give it a try */ -+ attempts++; - -- if (nBlocksPerState[YAFFS_BLOCK_STATE_COLLECTING] > 1) -- T(YAFFS_TRACE_VERIFY, -- (TSTR("Too many collecting blocks %d (max is 1)"TENDSTR), -- nBlocksPerState[YAFFS_BLOCK_STATE_COLLECTING])); -+ if(dev->param.always_check_erased) -+ bi->skip_erased_check = 0; - -- T(YAFFS_TRACE_VERIFY, (TSTR(""TENDSTR))); -+ if (!bi->skip_erased_check) { -+ erasedOk = yaffs_check_chunk_erased(dev, chunk); -+ if (erasedOk != YAFFS_OK) { -+ T(YAFFS_TRACE_ERROR, -+ (TSTR("**>> yaffs chunk %d was not erased" -+ TENDSTR), chunk)); - --} -+ /* If not erased, delete this one, -+ * skip rest of block and -+ * try another chunk */ -+ yaffs_chunk_del(dev,chunk,1,__LINE__); -+ yaffs_skip_rest_of_block(dev); -+ continue; -+ } -+ } - --/* -- * Verify the object header. oh must be valid, but obj and tags may be NULL in which -- * case those tests will not be performed. -- */ --static void yaffs_VerifyObjectHeader(yaffs_Object *obj, yaffs_ObjectHeader *oh, yaffs_ExtendedTags *tags, int parentCheck) --{ -- if (obj && yaffs_SkipVerification(obj->myDev)) -- return; -+ writeOk = yaffs_wr_chunk_tags_nand(dev, chunk, -+ data, tags); - -- if (!(tags && obj && oh)) { -- T(YAFFS_TRACE_VERIFY, -- (TSTR("Verifying object header tags %x obj %x oh %x"TENDSTR), -- (__u32)tags, (__u32)obj, (__u32)oh)); -- return; -- } -+ if(!bi->skip_erased_check) -+ writeOk = yaffs_verify_chunk_written(dev, chunk, data, tags); - -- if (oh->type <= YAFFS_OBJECT_TYPE_UNKNOWN || -- oh->type > YAFFS_OBJECT_TYPE_MAX) -- T(YAFFS_TRACE_VERIFY, -- (TSTR("Obj %d header type is illegal value 0x%x"TENDSTR), -- tags->objectId, oh->type)); -+ if (writeOk != YAFFS_OK) { -+ /* Clean up aborted write, skip to next block and -+ * try another chunk */ -+ yaffs_handle_chunk_wr_error(dev, chunk, erasedOk); -+ continue; -+ } - -- if (tags->objectId != obj->objectId) -- T(YAFFS_TRACE_VERIFY, -- (TSTR("Obj %d header mismatch objectId %d"TENDSTR), -- tags->objectId, obj->objectId)); -+ bi->skip_erased_check = 1; - -+ /* Copy the data into the robustification buffer */ -+ yaffs_handle_chunk_wr_ok(dev, chunk, data, tags); - -- /* -- * Check that the object's parent ids match if parentCheck requested. -- * -- * Tests do not apply to the root object. -- */ -+ } while (writeOk != YAFFS_OK && -+ (yaffs_wr_attempts <= 0 || attempts <= yaffs_wr_attempts)); - -- if (parentCheck && tags->objectId > 1 && !obj->parent) -- T(YAFFS_TRACE_VERIFY, -- (TSTR("Obj %d header mismatch parentId %d obj->parent is NULL"TENDSTR), -- tags->objectId, oh->parentObjectId)); -+ if (!writeOk) -+ chunk = -1; - -- if (parentCheck && obj->parent && -- oh->parentObjectId != obj->parent->objectId && -- (oh->parentObjectId != YAFFS_OBJECTID_UNLINKED || -- obj->parent->objectId != YAFFS_OBJECTID_DELETED)) -- T(YAFFS_TRACE_VERIFY, -- (TSTR("Obj %d header mismatch parentId %d parentObjectId %d"TENDSTR), -- tags->objectId, oh->parentObjectId, obj->parent->objectId)); -+ if (attempts > 1) { -+ T(YAFFS_TRACE_ERROR, -+ (TSTR("**>> yaffs write required %d attempts" TENDSTR), -+ attempts)); - -- if (tags->objectId > 1 && oh->name[0] == 0) /* Null name */ -- T(YAFFS_TRACE_VERIFY, -- (TSTR("Obj %d header name is NULL"TENDSTR), -- obj->objectId)); -+ dev->n_retired_writes += (attempts - 1); -+ } - -- if (tags->objectId > 1 && ((__u8)(oh->name[0])) == 0xff) /* Trashed name */ -- T(YAFFS_TRACE_VERIFY, -- (TSTR("Obj %d header name is 0xFF"TENDSTR), -- obj->objectId)); -+ return chunk; - } - - -+ -+/* -+ * Block retiring for handling a broken block. -+ */ - --static int yaffs_VerifyTnodeWorker(yaffs_Object *obj, yaffs_Tnode *tn, -- __u32 level, int chunkOffset) -+static void yaffs_retire_block(yaffs_dev_t *dev, int flash_block) - { -- int i; -- yaffs_Device *dev = obj->myDev; -- int ok = 1; -+ yaffs_block_info_t *bi = yaffs_get_block_info(dev, flash_block); - -- if (tn) { -- if (level > 0) { -+ yaffs2_checkpt_invalidate(dev); -+ -+ yaffs2_clear_oldest_dirty_seq(dev,bi); - -- for (i = 0; i < YAFFS_NTNODES_INTERNAL && ok; i++) { -- if (tn->internal[i]) { -- ok = yaffs_VerifyTnodeWorker(obj, -- tn->internal[i], -- level - 1, -- (chunkOffset<<YAFFS_TNODES_INTERNAL_BITS) + i); -- } -- } -- } else if (level == 0) { -- yaffs_ExtendedTags tags; -- __u32 objectId = obj->objectId; -+ if (yaffs_mark_bad(dev, flash_block) != YAFFS_OK) { -+ if (yaffs_erase_block(dev, flash_block) != YAFFS_OK) { -+ T(YAFFS_TRACE_ALWAYS, (TSTR( -+ "yaffs: Failed to mark bad and erase block %d" -+ TENDSTR), flash_block)); -+ } else { -+ yaffs_ext_tags tags; -+ int chunk_id = flash_block * dev->param.chunks_per_block; - -- chunkOffset <<= YAFFS_TNODES_LEVEL0_BITS; -+ __u8 *buffer = yaffs_get_temp_buffer(dev, __LINE__); - -- for (i = 0; i < YAFFS_NTNODES_LEVEL0; i++) { -- __u32 theChunk = yaffs_GetChunkGroupBase(dev, tn, i); -+ memset(buffer, 0xff, dev->data_bytes_per_chunk); -+ yaffs_init_tags(&tags); -+ tags.seq_number = YAFFS_SEQUENCE_BAD_BLOCK; -+ if (dev->param.write_chunk_tags_fn(dev, chunk_id - -+ dev->chunk_offset, buffer, &tags) != YAFFS_OK) -+ T(YAFFS_TRACE_ALWAYS, (TSTR("yaffs: Failed to " -+ TCONT("write bad block marker to block %d") -+ TENDSTR), flash_block)); - -- if (theChunk > 0) { -- /* T(~0,(TSTR("verifying (%d:%d) %d"TENDSTR),tags.objectId,tags.chunkId,theChunk)); */ -- yaffs_ReadChunkWithTagsFromNAND(dev, theChunk, NULL, &tags); -- if (tags.objectId != objectId || tags.chunkId != chunkOffset) { -- T(~0, (TSTR("Object %d chunkId %d NAND mismatch chunk %d tags (%d:%d)"TENDSTR), -- objectId, chunkOffset, theChunk, -- tags.objectId, tags.chunkId)); -- } -- } -- chunkOffset++; -- } -+ yaffs_release_temp_buffer(dev, buffer, __LINE__); - } - } - -- return ok; -+ bi->block_state = YAFFS_BLOCK_STATE_DEAD; -+ bi->gc_prioritise = 0; -+ bi->needs_retiring = 0; - -+ dev->n_retired_blocks++; - } - -+/* -+ * Functions for robustisizing TODO -+ * -+ */ - --static void yaffs_VerifyFile(yaffs_Object *obj) -+static void yaffs_handle_chunk_wr_ok(yaffs_dev_t *dev, int nand_chunk, -+ const __u8 *data, -+ const yaffs_ext_tags *tags) - { -- int requiredTallness; -- int actualTallness; -- __u32 lastChunk; -- __u32 x; -- __u32 i; -- yaffs_Device *dev; -- yaffs_ExtendedTags tags; -- yaffs_Tnode *tn; -- __u32 objectId; -+ dev=dev; -+ nand_chunk=nand_chunk; -+ data=data; -+ tags=tags; -+} - -- if (!obj) -- return; -+static void yaffs_handle_chunk_update(yaffs_dev_t *dev, int nand_chunk, -+ const yaffs_ext_tags *tags) -+{ -+ dev=dev; -+ nand_chunk=nand_chunk; -+ tags=tags; -+} - -- if (yaffs_SkipVerification(obj->myDev)) -- return; -+void yaffs_handle_chunk_error(yaffs_dev_t *dev, yaffs_block_info_t *bi) -+{ -+ if (!bi->gc_prioritise) { -+ bi->gc_prioritise = 1; -+ dev->has_pending_prioritised_gc = 1; -+ bi->chunk_error_strikes++; - -- dev = obj->myDev; -- objectId = obj->objectId; -+ if (bi->chunk_error_strikes > 3) { -+ bi->needs_retiring = 1; /* Too many stikes, so retire this */ -+ T(YAFFS_TRACE_ALWAYS, (TSTR("yaffs: Block struck out" TENDSTR))); - -- /* Check file size is consistent with tnode depth */ -- lastChunk = obj->variant.fileVariant.fileSize / dev->nDataBytesPerChunk + 1; -- x = lastChunk >> YAFFS_TNODES_LEVEL0_BITS; -- requiredTallness = 0; -- while (x > 0) { -- x >>= YAFFS_TNODES_INTERNAL_BITS; -- requiredTallness++; -+ } - } -+} - -- actualTallness = obj->variant.fileVariant.topLevel; -+static void yaffs_handle_chunk_wr_error(yaffs_dev_t *dev, int nand_chunk, -+ int erasedOk) -+{ -+ int flash_block = nand_chunk / dev->param.chunks_per_block; -+ yaffs_block_info_t *bi = yaffs_get_block_info(dev, flash_block); - -- if (requiredTallness > actualTallness) -- T(YAFFS_TRACE_VERIFY, -- (TSTR("Obj %d had tnode tallness %d, needs to be %d"TENDSTR), -- obj->objectId, actualTallness, requiredTallness)); -+ yaffs_handle_chunk_error(dev, bi); - -+ if (erasedOk) { -+ /* Was an actual write failure, so mark the block for retirement */ -+ bi->needs_retiring = 1; -+ T(YAFFS_TRACE_ERROR | YAFFS_TRACE_BAD_BLOCKS, -+ (TSTR("**>> Block %d needs retiring" TENDSTR), flash_block)); -+ } - -- /* Check that the chunks in the tnode tree are all correct. -- * We do this by scanning through the tnode tree and -- * checking the tags for every chunk match. -- */ -+ /* Delete the chunk */ -+ yaffs_chunk_del(dev, nand_chunk, 1, __LINE__); -+ yaffs_skip_rest_of_block(dev); -+} - -- if (yaffs_SkipNANDVerification(dev)) -- return; - -- for (i = 1; i <= lastChunk; i++) { -- tn = yaffs_FindLevel0Tnode(dev, &obj->variant.fileVariant, i); -+/*---------------- Name handling functions ------------*/ - -- if (tn) { -- __u32 theChunk = yaffs_GetChunkGroupBase(dev, tn, i); -- if (theChunk > 0) { -- /* T(~0,(TSTR("verifying (%d:%d) %d"TENDSTR),objectId,i,theChunk)); */ -- yaffs_ReadChunkWithTagsFromNAND(dev, theChunk, NULL, &tags); -- if (tags.objectId != objectId || tags.chunkId != i) { -- T(~0, (TSTR("Object %d chunkId %d NAND mismatch chunk %d tags (%d:%d)"TENDSTR), -- objectId, i, theChunk, -- tags.objectId, tags.chunkId)); -- } -- } -+static __u16 yaffs_calc_name_sum(const YCHAR *name) -+{ -+ __u16 sum = 0; -+ __u16 i = 1; -+ -+ const YUCHAR *bname = (const YUCHAR *) name; -+ if (bname) { -+ while ((*bname) && (i < (YAFFS_MAX_NAME_LENGTH/2))) { -+ -+#ifdef CONFIG_YAFFS_CASE_INSENSITIVE -+ sum += yaffs_toupper(*bname) * i; -+#else -+ sum += (*bname) * i; -+#endif -+ i++; -+ bname++; - } - } -+ return sum; - } - -- --static void yaffs_VerifyHardLink(yaffs_Object *obj) -+void yaffs_set_obj_name(yaffs_obj_t *obj, const YCHAR *name) - { -- if (obj && yaffs_SkipVerification(obj->myDev)) -- return; -- -- /* Verify sane equivalent object */ -+#ifdef CONFIG_YAFFS_SHORT_NAMES_IN_RAM -+ memset(obj->short_name, 0, sizeof(YCHAR) * (YAFFS_SHORT_NAME_LENGTH+1)); -+ if (name && yaffs_strnlen(name,YAFFS_SHORT_NAME_LENGTH+1) <= YAFFS_SHORT_NAME_LENGTH) -+ yaffs_strcpy(obj->short_name, name); -+ else -+ obj->short_name[0] = _Y('\0'); -+#endif -+ obj->sum = yaffs_calc_name_sum(name); - } - --static void yaffs_VerifySymlink(yaffs_Object *obj) -+void yaffs_set_obj_name_from_oh(yaffs_obj_t *obj, const yaffs_obj_header *oh) - { -- if (obj && yaffs_SkipVerification(obj->myDev)) -- return; -- -- /* Verify symlink string */ -+#ifdef CONFIG_YAFFS_AUTO_UNICODE -+ YCHAR tmpName[YAFFS_MAX_NAME_LENGTH+1]; -+ memset(tmpName,0,sizeof(tmpName)); -+ yaffs_load_name_from_oh(obj->my_dev,tmpName,oh->name,YAFFS_MAX_NAME_LENGTH+1); -+ yaffs_set_obj_name(obj,tmpName); -+#else -+ yaffs_set_obj_name(obj,oh->name); -+#endif - } - --static void yaffs_VerifySpecial(yaffs_Object *obj) --{ -- if (obj && yaffs_SkipVerification(obj->myDev)) -- return; --} -- --static void yaffs_VerifyObject(yaffs_Object *obj) --{ -- yaffs_Device *dev; -- -- __u32 chunkMin; -- __u32 chunkMax; -- -- __u32 chunkIdOk; -- __u32 chunkInRange; -- __u32 chunkShouldNotBeDeleted; -- __u32 chunkValid; -- -- if (!obj) -- return; -- -- if (obj->beingCreated) -- return; -+/*-------------------- TNODES ------------------- - -- dev = obj->myDev; -+ * List of spare tnodes -+ * The list is hooked together using the first pointer -+ * in the tnode. -+ */ - -- if (yaffs_SkipVerification(dev)) -- return; - -- /* Check sane object header chunk */ -+yaffs_tnode_t *yaffs_get_tnode(yaffs_dev_t *dev) -+{ -+ yaffs_tnode_t *tn = yaffs_alloc_raw_tnode(dev); -+ if (tn){ -+ memset(tn, 0, dev->tnode_size); -+ dev->n_tnodes++; -+ } - -- chunkMin = dev->internalStartBlock * dev->nChunksPerBlock; -- chunkMax = (dev->internalEndBlock+1) * dev->nChunksPerBlock - 1; -+ dev->checkpoint_blocks_required = 0; /* force recalculation*/ - -- chunkInRange = (((unsigned)(obj->hdrChunk)) >= chunkMin && ((unsigned)(obj->hdrChunk)) <= chunkMax); -- chunkIdOk = chunkInRange || obj->hdrChunk == 0; -- chunkValid = chunkInRange && -- yaffs_CheckChunkBit(dev, -- obj->hdrChunk / dev->nChunksPerBlock, -- obj->hdrChunk % dev->nChunksPerBlock); -- chunkShouldNotBeDeleted = chunkInRange && !chunkValid; -+ return tn; -+} - -- if (!obj->fake && -- (!chunkIdOk || chunkShouldNotBeDeleted)) { -- T(YAFFS_TRACE_VERIFY, -- (TSTR("Obj %d has chunkId %d %s %s"TENDSTR), -- obj->objectId, obj->hdrChunk, -- chunkIdOk ? "" : ",out of range", -- chunkShouldNotBeDeleted ? ",marked as deleted" : "")); -- } -+/* FreeTnode frees up a tnode and puts it back on the free list */ -+static void yaffs_free_tnode(yaffs_dev_t *dev, yaffs_tnode_t *tn) -+{ -+ yaffs_free_raw_tnode(dev,tn); -+ dev->n_tnodes--; -+ dev->checkpoint_blocks_required = 0; /* force recalculation*/ -+} - -- if (chunkValid && !yaffs_SkipNANDVerification(dev)) { -- yaffs_ExtendedTags tags; -- yaffs_ObjectHeader *oh; -- __u8 *buffer = yaffs_GetTempBuffer(dev, __LINE__); -+static void yaffs_deinit_tnodes_and_objs(yaffs_dev_t *dev) -+{ -+ yaffs_deinit_raw_tnodes_and_objs(dev); -+ dev->n_obj = 0; -+ dev->n_tnodes = 0; -+} - -- oh = (yaffs_ObjectHeader *)buffer; - -- yaffs_ReadChunkWithTagsFromNAND(dev, obj->hdrChunk, buffer, -- &tags); -+void yaffs_load_tnode_0(yaffs_dev_t *dev, yaffs_tnode_t *tn, unsigned pos, -+ unsigned val) -+{ -+ __u32 *map = (__u32 *)tn; -+ __u32 bitInMap; -+ __u32 bitInWord; -+ __u32 wordInMap; -+ __u32 mask; - -- yaffs_VerifyObjectHeader(obj, oh, &tags, 1); -+ pos &= YAFFS_TNODES_LEVEL0_MASK; -+ val >>= dev->chunk_grp_bits; - -- yaffs_ReleaseTempBuffer(dev, buffer, __LINE__); -- } -+ bitInMap = pos * dev->tnode_width; -+ wordInMap = bitInMap / 32; -+ bitInWord = bitInMap & (32 - 1); - -- /* Verify it has a parent */ -- if (obj && !obj->fake && -- (!obj->parent || obj->parent->myDev != dev)) { -- T(YAFFS_TRACE_VERIFY, -- (TSTR("Obj %d has parent pointer %p which does not look like an object"TENDSTR), -- obj->objectId, obj->parent)); -- } -+ mask = dev->tnode_mask << bitInWord; - -- /* Verify parent is a directory */ -- if (obj->parent && obj->parent->variantType != YAFFS_OBJECT_TYPE_DIRECTORY) { -- T(YAFFS_TRACE_VERIFY, -- (TSTR("Obj %d's parent is not a directory (type %d)"TENDSTR), -- obj->objectId, obj->parent->variantType)); -- } -+ map[wordInMap] &= ~mask; -+ map[wordInMap] |= (mask & (val << bitInWord)); - -- switch (obj->variantType) { -- case YAFFS_OBJECT_TYPE_FILE: -- yaffs_VerifyFile(obj); -- break; -- case YAFFS_OBJECT_TYPE_SYMLINK: -- yaffs_VerifySymlink(obj); -- break; -- case YAFFS_OBJECT_TYPE_DIRECTORY: -- yaffs_VerifyDirectory(obj); -- break; -- case YAFFS_OBJECT_TYPE_HARDLINK: -- yaffs_VerifyHardLink(obj); -- break; -- case YAFFS_OBJECT_TYPE_SPECIAL: -- yaffs_VerifySpecial(obj); -- break; -- case YAFFS_OBJECT_TYPE_UNKNOWN: -- default: -- T(YAFFS_TRACE_VERIFY, -- (TSTR("Obj %d has illegaltype %d"TENDSTR), -- obj->objectId, obj->variantType)); -- break; -+ if (dev->tnode_width > (32 - bitInWord)) { -+ bitInWord = (32 - bitInWord); -+ wordInMap++;; -+ mask = dev->tnode_mask >> (/*dev->tnode_width -*/ bitInWord); -+ map[wordInMap] &= ~mask; -+ map[wordInMap] |= (mask & (val >> bitInWord)); - } - } - --static void yaffs_VerifyObjects(yaffs_Device *dev) -+__u32 yaffs_get_group_base(yaffs_dev_t *dev, yaffs_tnode_t *tn, -+ unsigned pos) - { -- yaffs_Object *obj; -- int i; -- struct ylist_head *lh; -+ __u32 *map = (__u32 *)tn; -+ __u32 bitInMap; -+ __u32 bitInWord; -+ __u32 wordInMap; -+ __u32 val; - -- if (yaffs_SkipVerification(dev)) -- return; -+ pos &= YAFFS_TNODES_LEVEL0_MASK; - -- /* Iterate through the objects in each hash entry */ -+ bitInMap = pos * dev->tnode_width; -+ wordInMap = bitInMap / 32; -+ bitInWord = bitInMap & (32 - 1); - -- for (i = 0; i < YAFFS_NOBJECT_BUCKETS; i++) { -- ylist_for_each(lh, &dev->objectBucket[i].list) { -- if (lh) { -- obj = ylist_entry(lh, yaffs_Object, hashLink); -- yaffs_VerifyObject(obj); -- } -- } -- } --} -+ val = map[wordInMap] >> bitInWord; - -+ if (dev->tnode_width > (32 - bitInWord)) { -+ bitInWord = (32 - bitInWord); -+ wordInMap++;; -+ val |= (map[wordInMap] << bitInWord); -+ } - --/* -- * Simple hash function. Needs to have a reasonable spread -- */ -+ val &= dev->tnode_mask; -+ val <<= dev->chunk_grp_bits; - --static Y_INLINE int yaffs_HashFunction(int n) --{ -- n = abs(n); -- return n % YAFFS_NOBJECT_BUCKETS; -+ return val; - } - --/* -- * Access functions to useful fake objects. -- * Note that root might have a presence in NAND if permissions are set. -+/* ------------------- End of individual tnode manipulation -----------------*/ -+ -+/* ---------Functions to manipulate the look-up tree (made up of tnodes) ------ -+ * The look up tree is represented by the top tnode and the number of top_level -+ * in the tree. 0 means only the level 0 tnode is in the tree. - */ - --yaffs_Object *yaffs_Root(yaffs_Device *dev) -+/* FindLevel0Tnode finds the level 0 tnode, if one exists. */ -+yaffs_tnode_t *yaffs_find_tnode_0(yaffs_dev_t *dev, -+ yaffs_file_s *file_struct, -+ __u32 chunk_id) - { -- return dev->rootDir; --} -+ yaffs_tnode_t *tn = file_struct->top; -+ __u32 i; -+ int requiredTallness; -+ int level = file_struct->top_level; - --yaffs_Object *yaffs_LostNFound(yaffs_Device *dev) --{ -- return dev->lostNFoundDir; --} -+ dev=dev; - -+ /* Check sane level and chunk Id */ -+ if (level < 0 || level > YAFFS_TNODES_MAX_LEVEL) -+ return NULL; - --/* -- * Erased NAND checking functions -- */ -+ if (chunk_id > YAFFS_MAX_CHUNK_ID) -+ return NULL; - --int yaffs_CheckFF(__u8 *buffer, int nBytes) --{ -- /* Horrible, slow implementation */ -- while (nBytes--) { -- if (*buffer != 0xFF) -- return 0; -- buffer++; -+ /* First check we're tall enough (ie enough top_level) */ -+ -+ i = chunk_id >> YAFFS_TNODES_LEVEL0_BITS; -+ requiredTallness = 0; -+ while (i) { -+ i >>= YAFFS_TNODES_INTERNAL_BITS; -+ requiredTallness++; - } -- return 1; --} - --static int yaffs_CheckChunkErased(struct yaffs_DeviceStruct *dev, -- int chunkInNAND) --{ -- int retval = YAFFS_OK; -- __u8 *data = yaffs_GetTempBuffer(dev, __LINE__); -- yaffs_ExtendedTags tags; -- int result; -+ if (requiredTallness > file_struct->top_level) -+ return NULL; /* Not tall enough, so we can't find it */ -+ -+ /* Traverse down to level 0 */ -+ while (level > 0 && tn) { -+ tn = tn->internal[(chunk_id >> -+ (YAFFS_TNODES_LEVEL0_BITS + -+ (level - 1) * -+ YAFFS_TNODES_INTERNAL_BITS)) & -+ YAFFS_TNODES_INTERNAL_MASK]; -+ level--; -+ } - -- result = yaffs_ReadChunkWithTagsFromNAND(dev, chunkInNAND, data, &tags); -+ return tn; -+} - -- if (tags.eccResult > YAFFS_ECC_RESULT_NO_ERROR) -- retval = YAFFS_FAIL; -+/* AddOrFindLevel0Tnode finds the level 0 tnode if it exists, otherwise first expands the tree. -+ * This happens in two steps: -+ * 1. If the tree isn't tall enough, then make it taller. -+ * 2. Scan down the tree towards the level 0 tnode adding tnodes if required. -+ * -+ * Used when modifying the tree. -+ * -+ * If the tn argument is NULL, then a fresh tnode will be added otherwise the specified tn will -+ * be plugged into the ttree. -+ */ - -- if (!yaffs_CheckFF(data, dev->nDataBytesPerChunk) || tags.chunkUsed) { -- T(YAFFS_TRACE_NANDACCESS, -- (TSTR("Chunk %d not erased" TENDSTR), chunkInNAND)); -- retval = YAFFS_FAIL; -- } -+yaffs_tnode_t *yaffs_add_find_tnode_0(yaffs_dev_t *dev, -+ yaffs_file_s *file_struct, -+ __u32 chunk_id, -+ yaffs_tnode_t *passed_tn) -+{ -+ int requiredTallness; -+ int i; -+ int l; -+ yaffs_tnode_t *tn; - -- yaffs_ReleaseTempBuffer(dev, data, __LINE__); -+ __u32 x; - -- return retval; - --} -+ /* Check sane level and page Id */ -+ if (file_struct->top_level < 0 || file_struct->top_level > YAFFS_TNODES_MAX_LEVEL) -+ return NULL; - --static int yaffs_WriteNewChunkWithTagsToNAND(struct yaffs_DeviceStruct *dev, -- const __u8 *data, -- yaffs_ExtendedTags *tags, -- int useReserve) --{ -- int attempts = 0; -- int writeOk = 0; -- int chunk; -+ if (chunk_id > YAFFS_MAX_CHUNK_ID) -+ return NULL; - -- yaffs_InvalidateCheckpoint(dev); -+ /* First check we're tall enough (ie enough top_level) */ - -- do { -- yaffs_BlockInfo *bi = 0; -- int erasedOk = 0; -+ x = chunk_id >> YAFFS_TNODES_LEVEL0_BITS; -+ requiredTallness = 0; -+ while (x) { -+ x >>= YAFFS_TNODES_INTERNAL_BITS; -+ requiredTallness++; -+ } - -- chunk = yaffs_AllocateChunk(dev, useReserve, &bi); -- if (chunk < 0) { -- /* no space */ -- break; -- } - -- /* First check this chunk is erased, if it needs -- * checking. The checking policy (unless forced -- * always on) is as follows: -- * -- * Check the first page we try to write in a block. -- * If the check passes then we don't need to check any -- * more. If the check fails, we check again... -- * If the block has been erased, we don't need to check. -- * -- * However, if the block has been prioritised for gc, -- * then we think there might be something odd about -- * this block and stop using it. -- * -- * Rationale: We should only ever see chunks that have -- * not been erased if there was a partially written -- * chunk due to power loss. This checking policy should -- * catch that case with very few checks and thus save a -- * lot of checks that are most likely not needed. -- */ -- if (bi->gcPrioritise) { -- yaffs_DeleteChunk(dev, chunk, 1, __LINE__); -- /* try another chunk */ -- continue; -- } -+ if (requiredTallness > file_struct->top_level) { -+ /* Not tall enough, gotta make the tree taller */ -+ for (i = file_struct->top_level; i < requiredTallness; i++) { - -- /* let's give it a try */ -- attempts++; -+ tn = yaffs_get_tnode(dev); - --#ifdef CONFIG_YAFFS_ALWAYS_CHECK_CHUNK_ERASED -- bi->skipErasedCheck = 0; --#endif -- if (!bi->skipErasedCheck) { -- erasedOk = yaffs_CheckChunkErased(dev, chunk); -- if (erasedOk != YAFFS_OK) { -+ if (tn) { -+ tn->internal[0] = file_struct->top; -+ file_struct->top = tn; -+ file_struct->top_level++; -+ } else { - T(YAFFS_TRACE_ERROR, -- (TSTR("**>> yaffs chunk %d was not erased" -- TENDSTR), chunk)); -- -- /* try another chunk */ -- continue; -+ (TSTR("yaffs: no more tnodes" TENDSTR))); -+ return NULL; - } -- bi->skipErasedCheck = 1; - } -+ } - -- writeOk = yaffs_WriteChunkWithTagsToNAND(dev, chunk, -- data, tags); -- if (writeOk != YAFFS_OK) { -- yaffs_HandleWriteChunkError(dev, chunk, erasedOk); -- /* try another chunk */ -- continue; -- } -+ /* Traverse down to level 0, adding anything we need */ - -- /* Copy the data into the robustification buffer */ -- yaffs_HandleWriteChunkOk(dev, chunk, data, tags); -+ l = file_struct->top_level; -+ tn = file_struct->top; - -- } while (writeOk != YAFFS_OK && -- (yaffs_wr_attempts <= 0 || attempts <= yaffs_wr_attempts)); -+ if (l > 0) { -+ while (l > 0 && tn) { -+ x = (chunk_id >> -+ (YAFFS_TNODES_LEVEL0_BITS + -+ (l - 1) * YAFFS_TNODES_INTERNAL_BITS)) & -+ YAFFS_TNODES_INTERNAL_MASK; - -- if (!writeOk) -- chunk = -1; - -- if (attempts > 1) { -- T(YAFFS_TRACE_ERROR, -- (TSTR("**>> yaffs write required %d attempts" TENDSTR), -- attempts)); -+ if ((l > 1) && !tn->internal[x]) { -+ /* Add missing non-level-zero tnode */ -+ tn->internal[x] = yaffs_get_tnode(dev); -+ if(!tn->internal[x]) -+ return NULL; -+ } else if (l == 1) { -+ /* Looking from level 1 at level 0 */ -+ if (passed_tn) { -+ /* If we already have one, then release it.*/ -+ if (tn->internal[x]) -+ yaffs_free_tnode(dev, tn->internal[x]); -+ tn->internal[x] = passed_tn; -+ -+ } else if (!tn->internal[x]) { -+ /* Don't have one, none passed in */ -+ tn->internal[x] = yaffs_get_tnode(dev); -+ if(!tn->internal[x]) -+ return NULL; -+ } -+ } - -- dev->nRetriedWrites += (attempts - 1); -+ tn = tn->internal[x]; -+ l--; -+ } -+ } else { -+ /* top is level 0 */ -+ if (passed_tn) { -+ memcpy(tn, passed_tn, (dev->tnode_width * YAFFS_NTNODES_LEVEL0)/8); -+ yaffs_free_tnode(dev, passed_tn); -+ } - } - -- return chunk; -+ return tn; - } - --/* -- * Block retiring for handling a broken block. -- */ -- --static void yaffs_RetireBlock(yaffs_Device *dev, int blockInNAND) -+static int yaffs_find_chunk_in_group(yaffs_dev_t *dev, int theChunk, -+ yaffs_ext_tags *tags, int obj_id, -+ int inode_chunk) - { -- yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, blockInNAND); -+ int j; - -- yaffs_InvalidateCheckpoint(dev); -+ for (j = 0; theChunk && j < dev->chunk_grp_size; j++) { -+ if (yaffs_check_chunk_bit(dev, theChunk / dev->param.chunks_per_block, -+ theChunk % dev->param.chunks_per_block)) { -+ -+ if(dev->chunk_grp_size == 1) -+ return theChunk; -+ else { -+ yaffs_rd_chunk_tags_nand(dev, theChunk, NULL, -+ tags); -+ if (yaffs_tags_match(tags, obj_id, inode_chunk)) { -+ /* found it; */ -+ return theChunk; -+ } -+ } -+ } -+ theChunk++; -+ } -+ return -1; -+} - -- if (yaffs_MarkBlockBad(dev, blockInNAND) != YAFFS_OK) { -- if (yaffs_EraseBlockInNAND(dev, blockInNAND) != YAFFS_OK) { -- T(YAFFS_TRACE_ALWAYS, (TSTR( -- "yaffs: Failed to mark bad and erase block %d" -- TENDSTR), blockInNAND)); -- } else { -- yaffs_ExtendedTags tags; -- int chunkId = blockInNAND * dev->nChunksPerBlock; -+#if 0 -+/* Experimental code not being used yet. Might speed up file deletion */ -+/* DeleteWorker scans backwards through the tnode tree and deletes all the -+ * chunks and tnodes in the file. -+ * Returns 1 if the tree was deleted. -+ * Returns 0 if it stopped early due to hitting the limit and the delete is incomplete. -+ */ - -- __u8 *buffer = yaffs_GetTempBuffer(dev, __LINE__); -+static int yaffs_del_worker(yaffs_obj_t *in, yaffs_tnode_t *tn, __u32 level, -+ int chunk_offset, int *limit) -+{ -+ int i; -+ int inode_chunk; -+ int theChunk; -+ yaffs_ext_tags tags; -+ int foundChunk; -+ yaffs_dev_t *dev = in->my_dev; - -- memset(buffer, 0xff, dev->nDataBytesPerChunk); -- yaffs_InitialiseTags(&tags); -- tags.sequenceNumber = YAFFS_SEQUENCE_BAD_BLOCK; -- if (dev->writeChunkWithTagsToNAND(dev, chunkId - -- dev->chunkOffset, buffer, &tags) != YAFFS_OK) -- T(YAFFS_TRACE_ALWAYS, (TSTR("yaffs: Failed to " -- TCONT("write bad block marker to block %d") -- TENDSTR), blockInNAND)); -+ int allDone = 1; - -- yaffs_ReleaseTempBuffer(dev, buffer, __LINE__); -- } -- } -+ if (tn) { -+ if (level > 0) { -+ for (i = YAFFS_NTNODES_INTERNAL - 1; allDone && i >= 0; -+ i--) { -+ if (tn->internal[i]) { -+ if (limit && (*limit) < 0) { -+ allDone = 0; -+ } else { -+ allDone = -+ yaffs_del_worker(in, -+ tn-> -+ internal -+ [i], -+ level - -+ 1, -+ (chunk_offset -+ << -+ YAFFS_TNODES_INTERNAL_BITS) -+ + i, -+ limit); -+ } -+ if (allDone) { -+ yaffs_free_tnode(dev, -+ tn-> -+ internal[i]); -+ tn->internal[i] = NULL; -+ } -+ } -+ } -+ return (allDone) ? 1 : 0; -+ } else if (level == 0) { -+ int hitLimit = 0; - -- bi->blockState = YAFFS_BLOCK_STATE_DEAD; -- bi->gcPrioritise = 0; -- bi->needsRetiring = 0; -+ for (i = YAFFS_NTNODES_LEVEL0 - 1; i >= 0 && !hitLimit; -+ i--) { -+ theChunk = yaffs_get_group_base(dev, tn, i); -+ if (theChunk) { - -- dev->nRetiredBlocks++; --} -+ inode_chunk = (chunk_offset << -+ YAFFS_TNODES_LEVEL0_BITS) + i; - --/* -- * Functions for robustisizing TODO -- * -- */ -+ foundChunk = -+ yaffs_find_chunk_in_group(dev, -+ theChunk, -+ &tags, -+ in->obj_id, -+ inode_chunk); - --static void yaffs_HandleWriteChunkOk(yaffs_Device *dev, int chunkInNAND, -- const __u8 *data, -- const yaffs_ExtendedTags *tags) --{ --} -+ if (foundChunk > 0) { -+ yaffs_chunk_del(dev, -+ foundChunk, 1, -+ __LINE__); -+ in->n_data_chunks--; -+ if (limit) { -+ *limit = *limit - 1; -+ if (*limit <= 0) -+ hitLimit = 1; -+ } - --static void yaffs_HandleUpdateChunk(yaffs_Device *dev, int chunkInNAND, -- const yaffs_ExtendedTags *tags) --{ --} -+ } - --void yaffs_HandleChunkError(yaffs_Device *dev, yaffs_BlockInfo *bi) --{ -- if (!bi->gcPrioritise) { -- bi->gcPrioritise = 1; -- dev->hasPendingPrioritisedGCs = 1; -- bi->chunkErrorStrikes++; -+ yaffs_load_tnode_0(dev, tn, i, 0); -+ } - -- if (bi->chunkErrorStrikes > 3) { -- bi->needsRetiring = 1; /* Too many stikes, so retire this */ -- T(YAFFS_TRACE_ALWAYS, (TSTR("yaffs: Block struck out" TENDSTR))); -+ } -+ return (i < 0) ? 1 : 0; - - } -+ - } -+ -+ return 1; -+ - } - --static void yaffs_HandleWriteChunkError(yaffs_Device *dev, int chunkInNAND, -- int erasedOk) -+#endif -+ -+static void yaffs_soft_del_chunk(yaffs_dev_t *dev, int chunk) - { -- int blockInNAND = chunkInNAND / dev->nChunksPerBlock; -- yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, blockInNAND); -+ yaffs_block_info_t *theBlock; -+ unsigned block_no; - -- yaffs_HandleChunkError(dev, bi); -+ T(YAFFS_TRACE_DELETION, (TSTR("soft delete chunk %d" TENDSTR), chunk)); - -- if (erasedOk) { -- /* Was an actual write failure, so mark the block for retirement */ -- bi->needsRetiring = 1; -- T(YAFFS_TRACE_ERROR | YAFFS_TRACE_BAD_BLOCKS, -- (TSTR("**>> Block %d needs retiring" TENDSTR), blockInNAND)); -+ block_no = chunk / dev->param.chunks_per_block; -+ theBlock = yaffs_get_block_info(dev, block_no); -+ if (theBlock) { -+ theBlock->soft_del_pages++; -+ dev->n_free_chunks++; -+ yaffs2_update_oldest_dirty_seq(dev, block_no, theBlock); - } -- -- /* Delete the chunk */ -- yaffs_DeleteChunk(dev, chunkInNAND, 1, __LINE__); - } - -+/* SoftDeleteWorker scans backwards through the tnode tree and soft deletes all the chunks in the file. -+ * All soft deleting does is increment the block's softdelete count and pulls the chunk out -+ * of the tnode. -+ * Thus, essentially this is the same as DeleteWorker except that the chunks are soft deleted. -+ */ - --/*---------------- Name handling functions ------------*/ -- --static __u16 yaffs_CalcNameSum(const YCHAR *name) -+static int yaffs_soft_del_worker(yaffs_obj_t *in, yaffs_tnode_t *tn, -+ __u32 level, int chunk_offset) - { -- __u16 sum = 0; -- __u16 i = 1; -+ int i; -+ int theChunk; -+ int allDone = 1; -+ yaffs_dev_t *dev = in->my_dev; - -- const YUCHAR *bname = (const YUCHAR *) name; -- if (bname) { -- while ((*bname) && (i < (YAFFS_MAX_NAME_LENGTH/2))) { -+ if (tn) { -+ if (level > 0) { -+ -+ for (i = YAFFS_NTNODES_INTERNAL - 1; allDone && i >= 0; -+ i--) { -+ if (tn->internal[i]) { -+ allDone = -+ yaffs_soft_del_worker(in, -+ tn-> -+ internal[i], -+ level - 1, -+ (chunk_offset -+ << -+ YAFFS_TNODES_INTERNAL_BITS) -+ + i); -+ if (allDone) { -+ yaffs_free_tnode(dev, -+ tn-> -+ internal[i]); -+ tn->internal[i] = NULL; -+ } else { -+ /* Hoosterman... how could this happen? */ -+ } -+ } -+ } -+ return (allDone) ? 1 : 0; -+ } else if (level == 0) { -+ -+ for (i = YAFFS_NTNODES_LEVEL0 - 1; i >= 0; i--) { -+ theChunk = yaffs_get_group_base(dev, tn, i); -+ if (theChunk) { -+ /* Note this does not find the real chunk, only the chunk group. -+ * We make an assumption that a chunk group is not larger than -+ * a block. -+ */ -+ yaffs_soft_del_chunk(dev, theChunk); -+ yaffs_load_tnode_0(dev, tn, i, 0); -+ } -+ -+ } -+ return 1; - --#ifdef CONFIG_YAFFS_CASE_INSENSITIVE -- sum += yaffs_toupper(*bname) * i; --#else -- sum += (*bname) * i; --#endif -- i++; -- bname++; - } -+ - } -- return sum; -+ -+ return 1; -+ - } - --static void yaffs_SetObjectName(yaffs_Object *obj, const YCHAR *name) -+static void yaffs_soft_del_file(yaffs_obj_t *obj) - { --#ifdef CONFIG_YAFFS_SHORT_NAMES_IN_RAM -- memset(obj->shortName, 0, sizeof(YCHAR) * (YAFFS_SHORT_NAME_LENGTH+1)); -- if (name && yaffs_strlen(name) <= YAFFS_SHORT_NAME_LENGTH) -- yaffs_strcpy(obj->shortName, name); -- else -- obj->shortName[0] = _Y('\0'); --#endif -- obj->sum = yaffs_CalcNameSum(name); -+ if (obj->deleted && -+ obj->variant_type == YAFFS_OBJECT_TYPE_FILE && !obj->soft_del) { -+ if (obj->n_data_chunks <= 0) { -+ /* Empty file with no duplicate object headers, just delete it immediately */ -+ yaffs_free_tnode(obj->my_dev, -+ obj->variant.file_variant.top); -+ obj->variant.file_variant.top = NULL; -+ T(YAFFS_TRACE_TRACING, -+ (TSTR("yaffs: Deleting empty file %d" TENDSTR), -+ obj->obj_id)); -+ yaffs_generic_obj_del(obj); -+ } else { -+ yaffs_soft_del_worker(obj, -+ obj->variant.file_variant.top, -+ obj->variant.file_variant. -+ top_level, 0); -+ obj->soft_del = 1; -+ } -+ } - } - --/*-------------------- TNODES ------------------- -- -- * List of spare tnodes -- * The list is hooked together using the first pointer -- * in the tnode. -- */ -- --/* yaffs_CreateTnodes creates a bunch more tnodes and -- * adds them to the tnode free list. -- * Don't use this function directly -+/* Pruning removes any part of the file structure tree that is beyond the -+ * bounds of the file (ie that does not point to chunks). -+ * -+ * A file should only get pruned when its size is reduced. -+ * -+ * Before pruning, the chunks must be pulled from the tree and the -+ * level 0 tnode entries must be zeroed out. -+ * Could also use this for file deletion, but that's probably better handled -+ * by a special case. -+ * -+ * This function is recursive. For levels > 0 the function is called again on -+ * any sub-tree. For level == 0 we just check if the sub-tree has data. -+ * If there is no data in a subtree then it is pruned. - */ - --static int yaffs_CreateTnodes(yaffs_Device *dev, int nTnodes) -+static yaffs_tnode_t *yaffs_prune_worker(yaffs_dev_t *dev, yaffs_tnode_t *tn, -+ __u32 level, int del0) - { - int i; -- int tnodeSize; -- yaffs_Tnode *newTnodes; -- __u8 *mem; -- yaffs_Tnode *curr; -- yaffs_Tnode *next; -- yaffs_TnodeList *tnl; -+ int hasData; - -- if (nTnodes < 1) -- return YAFFS_OK; -+ if (tn) { -+ hasData = 0; - -- /* Calculate the tnode size in bytes for variable width tnode support. -- * Must be a multiple of 32-bits */ -- tnodeSize = (dev->tnodeWidth * YAFFS_NTNODES_LEVEL0)/8; -+ if(level > 0){ -+ for (i = 0; i < YAFFS_NTNODES_INTERNAL; i++) { -+ if (tn->internal[i]) { -+ tn->internal[i] = -+ yaffs_prune_worker(dev, tn->internal[i], -+ level - 1, -+ (i == 0) ? del0 : 1); -+ } - -- if (tnodeSize < sizeof(yaffs_Tnode)) -- tnodeSize = sizeof(yaffs_Tnode); -+ if (tn->internal[i]) -+ hasData++; -+ } -+ } else { -+ int tnode_size_u32 = dev->tnode_size/sizeof(__u32); -+ __u32 *map = (__u32 *)tn; - -- /* make these things */ -+ for(i = 0; !hasData && i < tnode_size_u32; i++){ -+ if(map[i]) -+ hasData++; -+ } -+ } - -- newTnodes = YMALLOC(nTnodes * tnodeSize); -- mem = (__u8 *)newTnodes; -+ if (hasData == 0 && del0) { -+ /* Free and return NULL */ - -- if (!newTnodes) { -- T(YAFFS_TRACE_ERROR, -- (TSTR("yaffs: Could not allocate Tnodes" TENDSTR))); -- return YAFFS_FAIL; -- } -+ yaffs_free_tnode(dev, tn); -+ tn = NULL; -+ } - -- /* Hook them into the free list */ --#if 0 -- for (i = 0; i < nTnodes - 1; i++) { -- newTnodes[i].internal[0] = &newTnodes[i + 1]; --#ifdef CONFIG_YAFFS_TNODE_LIST_DEBUG -- newTnodes[i].internal[YAFFS_NTNODES_INTERNAL] = (void *)1; --#endif - } - -- newTnodes[nTnodes - 1].internal[0] = dev->freeTnodes; --#ifdef CONFIG_YAFFS_TNODE_LIST_DEBUG -- newTnodes[nTnodes - 1].internal[YAFFS_NTNODES_INTERNAL] = (void *)1; --#endif -- dev->freeTnodes = newTnodes; --#else -- /* New hookup for wide tnodes */ -- for (i = 0; i < nTnodes - 1; i++) { -- curr = (yaffs_Tnode *) &mem[i * tnodeSize]; -- next = (yaffs_Tnode *) &mem[(i+1) * tnodeSize]; -- curr->internal[0] = next; -- } -+ return tn; - -- curr = (yaffs_Tnode *) &mem[(nTnodes - 1) * tnodeSize]; -- curr->internal[0] = dev->freeTnodes; -- dev->freeTnodes = (yaffs_Tnode *)mem; -+} - --#endif -+static int yaffs_prune_tree(yaffs_dev_t *dev, -+ yaffs_file_s *file_struct) -+{ -+ int i; -+ int hasData; -+ int done = 0; -+ yaffs_tnode_t *tn; - -+ if (file_struct->top_level > 0) { -+ file_struct->top = -+ yaffs_prune_worker(dev, file_struct->top, file_struct->top_level, 0); -+ -+ /* Now we have a tree with all the non-zero branches NULL but the height -+ * is the same as it was. -+ * Let's see if we can trim internal tnodes to shorten the tree. -+ * We can do this if only the 0th element in the tnode is in use -+ * (ie all the non-zero are NULL) -+ */ - -- dev->nFreeTnodes += nTnodes; -- dev->nTnodesCreated += nTnodes; -+ while (file_struct->top_level && !done) { -+ tn = file_struct->top; - -- /* Now add this bunch of tnodes to a list for freeing up. -- * NB If we can't add this to the management list it isn't fatal -- * but it just means we can't free this bunch of tnodes later. -- */ -+ hasData = 0; -+ for (i = 1; i < YAFFS_NTNODES_INTERNAL; i++) { -+ if (tn->internal[i]) -+ hasData++; -+ } - -- tnl = YMALLOC(sizeof(yaffs_TnodeList)); -- if (!tnl) { -- T(YAFFS_TRACE_ERROR, -- (TSTR -- ("yaffs: Could not add tnodes to management list" TENDSTR))); -- return YAFFS_FAIL; -- } else { -- tnl->tnodes = newTnodes; -- tnl->next = dev->allocatedTnodeList; -- dev->allocatedTnodeList = tnl; -+ if (!hasData) { -+ file_struct->top = tn->internal[0]; -+ file_struct->top_level--; -+ yaffs_free_tnode(dev, tn); -+ } else { -+ done = 1; -+ } -+ } - } - -- T(YAFFS_TRACE_ALLOCATE, (TSTR("yaffs: Tnodes added" TENDSTR))); -- - return YAFFS_OK; - } - --/* GetTnode gets us a clean tnode. Tries to make allocate more if we run out */ -+/*-------------------- End of File Structure functions.-------------------*/ -+ - --static yaffs_Tnode *yaffs_GetTnodeRaw(yaffs_Device *dev) -+/* AllocateEmptyObject gets us a clean Object. Tries to make allocate more if we run out */ -+static yaffs_obj_t *yaffs_alloc_empty_obj(yaffs_dev_t *dev) - { -- yaffs_Tnode *tn = NULL; -+ yaffs_obj_t *obj = yaffs_alloc_raw_obj(dev); - -- /* If there are none left make more */ -- if (!dev->freeTnodes) -- yaffs_CreateTnodes(dev, YAFFS_ALLOCATION_NTNODES); -- -- if (dev->freeTnodes) { -- tn = dev->freeTnodes; --#ifdef CONFIG_YAFFS_TNODE_LIST_DEBUG -- if (tn->internal[YAFFS_NTNODES_INTERNAL] != (void *)1) { -- /* Hoosterman, this thing looks like it isn't in the list */ -- T(YAFFS_TRACE_ALWAYS, -- (TSTR("yaffs: Tnode list bug 1" TENDSTR))); -- } --#endif -- dev->freeTnodes = dev->freeTnodes->internal[0]; -- dev->nFreeTnodes--; -- } -+ if (obj) { -+ dev->n_obj++; - -- dev->nCheckpointBlocksRequired = 0; /* force recalculation*/ -+ /* Now sweeten it up... */ - -- return tn; --} -+ memset(obj, 0, sizeof(yaffs_obj_t)); -+ obj->being_created = 1; - --static yaffs_Tnode *yaffs_GetTnode(yaffs_Device *dev) --{ -- yaffs_Tnode *tn = yaffs_GetTnodeRaw(dev); -- int tnodeSize = (dev->tnodeWidth * YAFFS_NTNODES_LEVEL0)/8; -+ obj->my_dev = dev; -+ obj->hdr_chunk = 0; -+ obj->variant_type = YAFFS_OBJECT_TYPE_UNKNOWN; -+ YINIT_LIST_HEAD(&(obj->hard_links)); -+ YINIT_LIST_HEAD(&(obj->hash_link)); -+ YINIT_LIST_HEAD(&obj->siblings); - -- if (tnodeSize < sizeof(yaffs_Tnode)) -- tnodeSize = sizeof(yaffs_Tnode); - -- if (tn) -- memset(tn, 0, tnodeSize); -+ /* Now make the directory sane */ -+ if (dev->root_dir) { -+ obj->parent = dev->root_dir; -+ ylist_add(&(obj->siblings), &dev->root_dir->variant.dir_variant.children); -+ } - -- return tn; -+ /* Add it to the lost and found directory. -+ * NB Can't put root or lostNFound in lostNFound so -+ * check if lostNFound exists first -+ */ -+ if (dev->lost_n_found) -+ yaffs_add_obj_to_dir(dev->lost_n_found, obj); -+ -+ obj->being_created = 0; -+ } -+ -+ dev->checkpoint_blocks_required = 0; /* force recalculation*/ -+ -+ return obj; - } - --/* FreeTnode frees up a tnode and puts it back on the free list */ --static void yaffs_FreeTnode(yaffs_Device *dev, yaffs_Tnode *tn) -+static yaffs_obj_t *yaffs_create_fake_dir(yaffs_dev_t *dev, int number, -+ __u32 mode) - { -- if (tn) { --#ifdef CONFIG_YAFFS_TNODE_LIST_DEBUG -- if (tn->internal[YAFFS_NTNODES_INTERNAL] != 0) { -- /* Hoosterman, this thing looks like it is already in the list */ -- T(YAFFS_TRACE_ALWAYS, -- (TSTR("yaffs: Tnode list bug 2" TENDSTR))); -- } -- tn->internal[YAFFS_NTNODES_INTERNAL] = (void *)1; --#endif -- tn->internal[0] = dev->freeTnodes; -- dev->freeTnodes = tn; -- dev->nFreeTnodes++; -+ -+ yaffs_obj_t *obj = -+ yaffs_new_obj(dev, number, YAFFS_OBJECT_TYPE_DIRECTORY); -+ if (obj) { -+ obj->fake = 1; /* it is fake so it might have no NAND presence... */ -+ obj->rename_allowed = 0; /* ... and we're not allowed to rename it... */ -+ obj->unlink_allowed = 0; /* ... or unlink it */ -+ obj->deleted = 0; -+ obj->unlinked = 0; -+ obj->yst_mode = mode; -+ obj->my_dev = dev; -+ obj->hdr_chunk = 0; /* Not a valid chunk. */ -+ } -+ -+ return obj; -+ -+} -+ -+static void yaffs_unhash_obj(yaffs_obj_t *obj) -+{ -+ int bucket; -+ yaffs_dev_t *dev = obj->my_dev; -+ -+ /* If it is still linked into the bucket list, free from the list */ -+ if (!ylist_empty(&obj->hash_link)) { -+ ylist_del_init(&obj->hash_link); -+ bucket = yaffs_hash_fn(obj->obj_id); -+ dev->obj_bucket[bucket].count--; - } -- dev->nCheckpointBlocksRequired = 0; /* force recalculation*/ - } - --static void yaffs_DeinitialiseTnodes(yaffs_Device *dev) -+/* FreeObject frees up a Object and puts it back on the free list */ -+static void yaffs_free_obj(yaffs_obj_t *obj) - { -- /* Free the list of allocated tnodes */ -- yaffs_TnodeList *tmp; -+ yaffs_dev_t *dev = obj->my_dev; -+ -+ T(YAFFS_TRACE_OS, (TSTR("FreeObject %p inode %p"TENDSTR), obj, obj->my_inode)); - -- while (dev->allocatedTnodeList) { -- tmp = dev->allocatedTnodeList->next; -+ if (!obj) -+ YBUG(); -+ if (obj->parent) -+ YBUG(); -+ if (!ylist_empty(&obj->siblings)) -+ YBUG(); - -- YFREE(dev->allocatedTnodeList->tnodes); -- YFREE(dev->allocatedTnodeList); -- dev->allocatedTnodeList = tmp; - -+ if (obj->my_inode) { -+ /* We're still hooked up to a cached inode. -+ * Don't delete now, but mark for later deletion -+ */ -+ obj->defered_free = 1; -+ return; - } - -- dev->freeTnodes = NULL; -- dev->nFreeTnodes = 0; --} -+ yaffs_unhash_obj(obj); - --static void yaffs_InitialiseTnodes(yaffs_Device *dev) --{ -- dev->allocatedTnodeList = NULL; -- dev->freeTnodes = NULL; -- dev->nFreeTnodes = 0; -- dev->nTnodesCreated = 0; -+ yaffs_free_raw_obj(dev,obj); -+ dev->n_obj--; -+ dev->checkpoint_blocks_required = 0; /* force recalculation*/ - } - - --void yaffs_PutLevel0Tnode(yaffs_Device *dev, yaffs_Tnode *tn, unsigned pos, -- unsigned val) -+void yaffs_handle_defered_free(yaffs_obj_t *obj) - { -- __u32 *map = (__u32 *)tn; -- __u32 bitInMap; -- __u32 bitInWord; -- __u32 wordInMap; -- __u32 mask; -- -- pos &= YAFFS_TNODES_LEVEL0_MASK; -- val >>= dev->chunkGroupBits; -+ if (obj->defered_free) -+ yaffs_free_obj(obj); -+} - -- bitInMap = pos * dev->tnodeWidth; -- wordInMap = bitInMap / 32; -- bitInWord = bitInMap & (32 - 1); -+static void yaffs_init_tnodes_and_objs(yaffs_dev_t *dev) -+{ -+ int i; - -- mask = dev->tnodeMask << bitInWord; -+ dev->n_obj = 0; -+ dev->n_tnodes = 0; - -- map[wordInMap] &= ~mask; -- map[wordInMap] |= (mask & (val << bitInWord)); -+ yaffs_init_raw_tnodes_and_objs(dev); - -- if (dev->tnodeWidth > (32 - bitInWord)) { -- bitInWord = (32 - bitInWord); -- wordInMap++;; -- mask = dev->tnodeMask >> (/*dev->tnodeWidth -*/ bitInWord); -- map[wordInMap] &= ~mask; -- map[wordInMap] |= (mask & (val >> bitInWord)); -+ for (i = 0; i < YAFFS_NOBJECT_BUCKETS; i++) { -+ YINIT_LIST_HEAD(&dev->obj_bucket[i].list); -+ dev->obj_bucket[i].count = 0; - } - } - --static __u32 yaffs_GetChunkGroupBase(yaffs_Device *dev, yaffs_Tnode *tn, -- unsigned pos) -+static int yaffs_find_nice_bucket(yaffs_dev_t *dev) - { -- __u32 *map = (__u32 *)tn; -- __u32 bitInMap; -- __u32 bitInWord; -- __u32 wordInMap; -- __u32 val; -+ int i; -+ int l = 999; -+ int lowest = 999999; - -- pos &= YAFFS_TNODES_LEVEL0_MASK; - -- bitInMap = pos * dev->tnodeWidth; -- wordInMap = bitInMap / 32; -- bitInWord = bitInMap & (32 - 1); -+ /* Search for the shortest list or one that -+ * isn't too long. -+ */ - -- val = map[wordInMap] >> bitInWord; -+ for (i = 0; i < 10 && lowest > 4; i++) { -+ dev->bucket_finder++; -+ dev->bucket_finder %= YAFFS_NOBJECT_BUCKETS; -+ if (dev->obj_bucket[dev->bucket_finder].count < lowest) { -+ lowest = dev->obj_bucket[dev->bucket_finder].count; -+ l = dev->bucket_finder; -+ } - -- if (dev->tnodeWidth > (32 - bitInWord)) { -- bitInWord = (32 - bitInWord); -- wordInMap++;; -- val |= (map[wordInMap] << bitInWord); - } - -- val &= dev->tnodeMask; -- val <<= dev->chunkGroupBits; -- -- return val; -+ return l; - } - --/* ------------------- End of individual tnode manipulation -----------------*/ -- --/* ---------Functions to manipulate the look-up tree (made up of tnodes) ------ -- * The look up tree is represented by the top tnode and the number of topLevel -- * in the tree. 0 means only the level 0 tnode is in the tree. -- */ -- --/* FindLevel0Tnode finds the level 0 tnode, if one exists. */ --static yaffs_Tnode *yaffs_FindLevel0Tnode(yaffs_Device *dev, -- yaffs_FileStructure *fStruct, -- __u32 chunkId) -+static int yaffs_new_obj_id(yaffs_dev_t *dev) - { -- yaffs_Tnode *tn = fStruct->top; -- __u32 i; -- int requiredTallness; -- int level = fStruct->topLevel; -- -- /* Check sane level and chunk Id */ -- if (level < 0 || level > YAFFS_TNODES_MAX_LEVEL) -- return NULL; -+ int bucket = yaffs_find_nice_bucket(dev); - -- if (chunkId > YAFFS_MAX_CHUNK_ID) -- return NULL; -+ /* Now find an object value that has not already been taken -+ * by scanning the list. -+ */ - -- /* First check we're tall enough (ie enough topLevel) */ -+ int found = 0; -+ struct ylist_head *i; - -- i = chunkId >> YAFFS_TNODES_LEVEL0_BITS; -- requiredTallness = 0; -- while (i) { -- i >>= YAFFS_TNODES_INTERNAL_BITS; -- requiredTallness++; -- } -+ __u32 n = (__u32) bucket; - -- if (requiredTallness > fStruct->topLevel) -- return NULL; /* Not tall enough, so we can't find it */ -+ /* yaffs_check_obj_hash_sane(); */ - -- /* Traverse down to level 0 */ -- while (level > 0 && tn) { -- tn = tn->internal[(chunkId >> -- (YAFFS_TNODES_LEVEL0_BITS + -- (level - 1) * -- YAFFS_TNODES_INTERNAL_BITS)) & -- YAFFS_TNODES_INTERNAL_MASK]; -- level--; -+ while (!found) { -+ found = 1; -+ n += YAFFS_NOBJECT_BUCKETS; -+ if (1 || dev->obj_bucket[bucket].count > 0) { -+ ylist_for_each(i, &dev->obj_bucket[bucket].list) { -+ /* If there is already one in the list */ -+ if (i && ylist_entry(i, yaffs_obj_t, -+ hash_link)->obj_id == n) { -+ found = 0; -+ } -+ } -+ } - } - -- return tn; -+ return n; - } - --/* AddOrFindLevel0Tnode finds the level 0 tnode if it exists, otherwise first expands the tree. -- * This happens in two steps: -- * 1. If the tree isn't tall enough, then make it taller. -- * 2. Scan down the tree towards the level 0 tnode adding tnodes if required. -- * -- * Used when modifying the tree. -- * -- * If the tn argument is NULL, then a fresh tnode will be added otherwise the specified tn will -- * be plugged into the ttree. -- */ -- --static yaffs_Tnode *yaffs_AddOrFindLevel0Tnode(yaffs_Device *dev, -- yaffs_FileStructure *fStruct, -- __u32 chunkId, -- yaffs_Tnode *passedTn) -+static void yaffs_hash_obj(yaffs_obj_t *in) - { -- int requiredTallness; -- int i; -- int l; -- yaffs_Tnode *tn; -- -- __u32 x; -+ int bucket = yaffs_hash_fn(in->obj_id); -+ yaffs_dev_t *dev = in->my_dev; - -+ ylist_add(&in->hash_link, &dev->obj_bucket[bucket].list); -+ dev->obj_bucket[bucket].count++; -+} - -- /* Check sane level and page Id */ -- if (fStruct->topLevel < 0 || fStruct->topLevel > YAFFS_TNODES_MAX_LEVEL) -- return NULL; -+yaffs_obj_t *yaffs_find_by_number(yaffs_dev_t *dev, __u32 number) -+{ -+ int bucket = yaffs_hash_fn(number); -+ struct ylist_head *i; -+ yaffs_obj_t *in; - -- if (chunkId > YAFFS_MAX_CHUNK_ID) -- return NULL; -+ ylist_for_each(i, &dev->obj_bucket[bucket].list) { -+ /* Look if it is in the list */ -+ if (i) { -+ in = ylist_entry(i, yaffs_obj_t, hash_link); -+ if (in->obj_id == number) { - -- /* First check we're tall enough (ie enough topLevel) */ -+ /* Don't tell the VFS about this one if it is defered free */ -+ if (in->defered_free) -+ return NULL; - -- x = chunkId >> YAFFS_TNODES_LEVEL0_BITS; -- requiredTallness = 0; -- while (x) { -- x >>= YAFFS_TNODES_INTERNAL_BITS; -- requiredTallness++; -+ return in; -+ } -+ } - } - -+ return NULL; -+} - -- if (requiredTallness > fStruct->topLevel) { -- /* Not tall enough, gotta make the tree taller */ -- for (i = fStruct->topLevel; i < requiredTallness; i++) { -+yaffs_obj_t *yaffs_new_obj(yaffs_dev_t *dev, int number, -+ yaffs_obj_type type) -+{ -+ yaffs_obj_t *theObject=NULL; -+ yaffs_tnode_t *tn = NULL; - -- tn = yaffs_GetTnode(dev); -+ if (number < 0) -+ number = yaffs_new_obj_id(dev); - -- if (tn) { -- tn->internal[0] = fStruct->top; -- fStruct->top = tn; -- } else { -- T(YAFFS_TRACE_ERROR, -- (TSTR("yaffs: no more tnodes" TENDSTR))); -- } -- } -+ if (type == YAFFS_OBJECT_TYPE_FILE) { -+ tn = yaffs_get_tnode(dev); -+ if (!tn) -+ return NULL; -+ } - -- fStruct->topLevel = requiredTallness; -+ theObject = yaffs_alloc_empty_obj(dev); -+ if (!theObject){ -+ if(tn) -+ yaffs_free_tnode(dev,tn); -+ return NULL; - } - -- /* Traverse down to level 0, adding anything we need */ - -- l = fStruct->topLevel; -- tn = fStruct->top; -+ if (theObject) { -+ theObject->fake = 0; -+ theObject->rename_allowed = 1; -+ theObject->unlink_allowed = 1; -+ theObject->obj_id = number; -+ yaffs_hash_obj(theObject); -+ theObject->variant_type = type; -+#ifdef CONFIG_YAFFS_WINCE -+ yfsd_win_file_time_now(theObject->win_atime); -+ theObject->win_ctime[0] = theObject->win_mtime[0] = -+ theObject->win_atime[0]; -+ theObject->win_ctime[1] = theObject->win_mtime[1] = -+ theObject->win_atime[1]; -+ -+#else - -- if (l > 0) { -- while (l > 0 && tn) { -- x = (chunkId >> -- (YAFFS_TNODES_LEVEL0_BITS + -- (l - 1) * YAFFS_TNODES_INTERNAL_BITS)) & -- YAFFS_TNODES_INTERNAL_MASK; -+ theObject->yst_atime = theObject->yst_mtime = -+ theObject->yst_ctime = Y_CURRENT_TIME; -+#endif -+ switch (type) { -+ case YAFFS_OBJECT_TYPE_FILE: -+ theObject->variant.file_variant.file_size = 0; -+ theObject->variant.file_variant.scanned_size = 0; -+ theObject->variant.file_variant.shrink_size = 0xFFFFFFFF; /* max __u32 */ -+ theObject->variant.file_variant.top_level = 0; -+ theObject->variant.file_variant.top = tn; -+ break; -+ case YAFFS_OBJECT_TYPE_DIRECTORY: -+ YINIT_LIST_HEAD(&theObject->variant.dir_variant. -+ children); -+ YINIT_LIST_HEAD(&theObject->variant.dir_variant. -+ dirty); -+ break; -+ case YAFFS_OBJECT_TYPE_SYMLINK: -+ case YAFFS_OBJECT_TYPE_HARDLINK: -+ case YAFFS_OBJECT_TYPE_SPECIAL: -+ /* No action required */ -+ break; -+ case YAFFS_OBJECT_TYPE_UNKNOWN: -+ /* todo this should not happen */ -+ break; -+ } -+ } - -+ return theObject; -+} - -- if ((l > 1) && !tn->internal[x]) { -- /* Add missing non-level-zero tnode */ -- tn->internal[x] = yaffs_GetTnode(dev); -+yaffs_obj_t *yaffs_find_or_create_by_number(yaffs_dev_t *dev, -+ int number, -+ yaffs_obj_type type) -+{ -+ yaffs_obj_t *theObject = NULL; - -- } else if (l == 1) { -- /* Looking from level 1 at level 0 */ -- if (passedTn) { -- /* If we already have one, then release it.*/ -- if (tn->internal[x]) -- yaffs_FreeTnode(dev, tn->internal[x]); -- tn->internal[x] = passedTn; -+ if (number > 0) -+ theObject = yaffs_find_by_number(dev, number); - -- } else if (!tn->internal[x]) { -- /* Don't have one, none passed in */ -- tn->internal[x] = yaffs_GetTnode(dev); -- } -- } -+ if (!theObject) -+ theObject = yaffs_new_obj(dev, number, type); - -- tn = tn->internal[x]; -- l--; -- } -- } else { -- /* top is level 0 */ -- if (passedTn) { -- memcpy(tn, passedTn, (dev->tnodeWidth * YAFFS_NTNODES_LEVEL0)/8); -- yaffs_FreeTnode(dev, passedTn); -- } -- } -+ return theObject; - -- return tn; - } - --static int yaffs_FindChunkInGroup(yaffs_Device *dev, int theChunk, -- yaffs_ExtendedTags *tags, int objectId, -- int chunkInInode) -+ -+YCHAR *yaffs_clone_str(const YCHAR *str) - { -- int j; -+ YCHAR *newStr = NULL; -+ int len; - -- for (j = 0; theChunk && j < dev->chunkGroupSize; j++) { -- if (yaffs_CheckChunkBit(dev, theChunk / dev->nChunksPerBlock, -- theChunk % dev->nChunksPerBlock)) { -- yaffs_ReadChunkWithTagsFromNAND(dev, theChunk, NULL, -- tags); -- if (yaffs_TagsMatch(tags, objectId, chunkInInode)) { -- /* found it; */ -- return theChunk; -- } -- } -- theChunk++; -+ if (!str) -+ str = _Y(""); -+ -+ len = yaffs_strnlen(str,YAFFS_MAX_ALIAS_LENGTH); -+ newStr = YMALLOC((len + 1) * sizeof(YCHAR)); -+ if (newStr){ -+ yaffs_strncpy(newStr, str,len); -+ newStr[len] = 0; - } -- return -1; --} -+ return newStr; - -+} - --/* DeleteWorker scans backwards through the tnode tree and deletes all the -- * chunks and tnodes in the file -- * Returns 1 if the tree was deleted. -- * Returns 0 if it stopped early due to hitting the limit and the delete is incomplete. -+/* -+ * Mknod (create) a new object. -+ * equiv_obj only has meaning for a hard link; -+ * aliasString only has meaning for a symlink. -+ * rdev only has meaning for devices (a subset of special objects) - */ - --static int yaffs_DeleteWorker(yaffs_Object *in, yaffs_Tnode *tn, __u32 level, -- int chunkOffset, int *limit) -+static yaffs_obj_t *yaffs_create_obj(yaffs_obj_type type, -+ yaffs_obj_t *parent, -+ const YCHAR *name, -+ __u32 mode, -+ __u32 uid, -+ __u32 gid, -+ yaffs_obj_t *equiv_obj, -+ const YCHAR *aliasString, __u32 rdev) - { -- int i; -- int chunkInInode; -- int theChunk; -- yaffs_ExtendedTags tags; -- int foundChunk; -- yaffs_Device *dev = in->myDev; -- -- int allDone = 1; -- -- if (tn) { -- if (level > 0) { -- for (i = YAFFS_NTNODES_INTERNAL - 1; allDone && i >= 0; -- i--) { -- if (tn->internal[i]) { -- if (limit && (*limit) < 0) { -- allDone = 0; -- } else { -- allDone = -- yaffs_DeleteWorker(in, -- tn-> -- internal -- [i], -- level - -- 1, -- (chunkOffset -- << -- YAFFS_TNODES_INTERNAL_BITS) -- + i, -- limit); -- } -- if (allDone) { -- yaffs_FreeTnode(dev, -- tn-> -- internal[i]); -- tn->internal[i] = NULL; -- } -- } -- } -- return (allDone) ? 1 : 0; -- } else if (level == 0) { -- int hitLimit = 0; -- -- for (i = YAFFS_NTNODES_LEVEL0 - 1; i >= 0 && !hitLimit; -- i--) { -- theChunk = yaffs_GetChunkGroupBase(dev, tn, i); -- if (theChunk) { -- -- chunkInInode = (chunkOffset << -- YAFFS_TNODES_LEVEL0_BITS) + i; -- -- foundChunk = -- yaffs_FindChunkInGroup(dev, -- theChunk, -- &tags, -- in->objectId, -- chunkInInode); -- -- if (foundChunk > 0) { -- yaffs_DeleteChunk(dev, -- foundChunk, 1, -- __LINE__); -- in->nDataChunks--; -- if (limit) { -- *limit = *limit - 1; -- if (*limit <= 0) -- hitLimit = 1; -- } -- -- } -- -- yaffs_PutLevel0Tnode(dev, tn, i, 0); -- } -- -- } -- return (i < 0) ? 1 : 0; -- -- } -- -- } -- -- return 1; -- --} -- --static void yaffs_SoftDeleteChunk(yaffs_Device *dev, int chunk) --{ -- yaffs_BlockInfo *theBlock; -- -- T(YAFFS_TRACE_DELETION, (TSTR("soft delete chunk %d" TENDSTR), chunk)); -- -- theBlock = yaffs_GetBlockInfo(dev, chunk / dev->nChunksPerBlock); -- if (theBlock) { -- theBlock->softDeletions++; -- dev->nFreeChunks++; -- } --} -- --/* SoftDeleteWorker scans backwards through the tnode tree and soft deletes all the chunks in the file. -- * All soft deleting does is increment the block's softdelete count and pulls the chunk out -- * of the tnode. -- * Thus, essentially this is the same as DeleteWorker except that the chunks are soft deleted. -- */ -- --static int yaffs_SoftDeleteWorker(yaffs_Object *in, yaffs_Tnode *tn, -- __u32 level, int chunkOffset) --{ -- int i; -- int theChunk; -- int allDone = 1; -- yaffs_Device *dev = in->myDev; -- -- if (tn) { -- if (level > 0) { -- -- for (i = YAFFS_NTNODES_INTERNAL - 1; allDone && i >= 0; -- i--) { -- if (tn->internal[i]) { -- allDone = -- yaffs_SoftDeleteWorker(in, -- tn-> -- internal[i], -- level - 1, -- (chunkOffset -- << -- YAFFS_TNODES_INTERNAL_BITS) -- + i); -- if (allDone) { -- yaffs_FreeTnode(dev, -- tn-> -- internal[i]); -- tn->internal[i] = NULL; -- } else { -- /* Hoosterman... how could this happen? */ -- } -- } -- } -- return (allDone) ? 1 : 0; -- } else if (level == 0) { -- -- for (i = YAFFS_NTNODES_LEVEL0 - 1; i >= 0; i--) { -- theChunk = yaffs_GetChunkGroupBase(dev, tn, i); -- if (theChunk) { -- /* Note this does not find the real chunk, only the chunk group. -- * We make an assumption that a chunk group is not larger than -- * a block. -- */ -- yaffs_SoftDeleteChunk(dev, theChunk); -- yaffs_PutLevel0Tnode(dev, tn, i, 0); -- } -- -- } -- return 1; -- -- } -- -- } -- -- return 1; -- --} -- --static void yaffs_SoftDeleteFile(yaffs_Object *obj) --{ -- if (obj->deleted && -- obj->variantType == YAFFS_OBJECT_TYPE_FILE && !obj->softDeleted) { -- if (obj->nDataChunks <= 0) { -- /* Empty file with no duplicate object headers, just delete it immediately */ -- yaffs_FreeTnode(obj->myDev, -- obj->variant.fileVariant.top); -- obj->variant.fileVariant.top = NULL; -- T(YAFFS_TRACE_TRACING, -- (TSTR("yaffs: Deleting empty file %d" TENDSTR), -- obj->objectId)); -- yaffs_DoGenericObjectDeletion(obj); -- } else { -- yaffs_SoftDeleteWorker(obj, -- obj->variant.fileVariant.top, -- obj->variant.fileVariant. -- topLevel, 0); -- obj->softDeleted = 1; -- } -- } --} -- --/* Pruning removes any part of the file structure tree that is beyond the -- * bounds of the file (ie that does not point to chunks). -- * -- * A file should only get pruned when its size is reduced. -- * -- * Before pruning, the chunks must be pulled from the tree and the -- * level 0 tnode entries must be zeroed out. -- * Could also use this for file deletion, but that's probably better handled -- * by a special case. -- */ -- --static yaffs_Tnode *yaffs_PruneWorker(yaffs_Device *dev, yaffs_Tnode *tn, -- __u32 level, int del0) --{ -- int i; -- int hasData; -- -- if (tn) { -- hasData = 0; -- -- for (i = 0; i < YAFFS_NTNODES_INTERNAL; i++) { -- if (tn->internal[i] && level > 0) { -- tn->internal[i] = -- yaffs_PruneWorker(dev, tn->internal[i], -- level - 1, -- (i == 0) ? del0 : 1); -- } -- -- if (tn->internal[i]) -- hasData++; -- } -- -- if (hasData == 0 && del0) { -- /* Free and return NULL */ -- -- yaffs_FreeTnode(dev, tn); -- tn = NULL; -- } -- -- } -- -- return tn; -- --} -- --static int yaffs_PruneFileStructure(yaffs_Device *dev, -- yaffs_FileStructure *fStruct) --{ -- int i; -- int hasData; -- int done = 0; -- yaffs_Tnode *tn; -- -- if (fStruct->topLevel > 0) { -- fStruct->top = -- yaffs_PruneWorker(dev, fStruct->top, fStruct->topLevel, 0); -- -- /* Now we have a tree with all the non-zero branches NULL but the height -- * is the same as it was. -- * Let's see if we can trim internal tnodes to shorten the tree. -- * We can do this if only the 0th element in the tnode is in use -- * (ie all the non-zero are NULL) -- */ -- -- while (fStruct->topLevel && !done) { -- tn = fStruct->top; -- -- hasData = 0; -- for (i = 1; i < YAFFS_NTNODES_INTERNAL; i++) { -- if (tn->internal[i]) -- hasData++; -- } -- -- if (!hasData) { -- fStruct->top = tn->internal[0]; -- fStruct->topLevel--; -- yaffs_FreeTnode(dev, tn); -- } else { -- done = 1; -- } -- } -- } -- -- return YAFFS_OK; --} -- --/*-------------------- End of File Structure functions.-------------------*/ -- --/* yaffs_CreateFreeObjects creates a bunch more objects and -- * adds them to the object free list. -- */ --static int yaffs_CreateFreeObjects(yaffs_Device *dev, int nObjects) --{ -- int i; -- yaffs_Object *newObjects; -- yaffs_ObjectList *list; -- -- if (nObjects < 1) -- return YAFFS_OK; -- -- /* make these things */ -- newObjects = YMALLOC(nObjects * sizeof(yaffs_Object)); -- list = YMALLOC(sizeof(yaffs_ObjectList)); -- -- if (!newObjects || !list) { -- if (newObjects) -- YFREE(newObjects); -- if (list) -- YFREE(list); -- T(YAFFS_TRACE_ALLOCATE, -- (TSTR("yaffs: Could not allocate more objects" TENDSTR))); -- return YAFFS_FAIL; -- } -- -- /* Hook them into the free list */ -- for (i = 0; i < nObjects - 1; i++) { -- newObjects[i].siblings.next = -- (struct ylist_head *)(&newObjects[i + 1]); -- } -- -- newObjects[nObjects - 1].siblings.next = (void *)dev->freeObjects; -- dev->freeObjects = newObjects; -- dev->nFreeObjects += nObjects; -- dev->nObjectsCreated += nObjects; -- -- /* Now add this bunch of Objects to a list for freeing up. */ -- -- list->objects = newObjects; -- list->next = dev->allocatedObjectList; -- dev->allocatedObjectList = list; -- -- return YAFFS_OK; --} -- -- --/* AllocateEmptyObject gets us a clean Object. Tries to make allocate more if we run out */ --static yaffs_Object *yaffs_AllocateEmptyObject(yaffs_Device *dev) --{ -- yaffs_Object *tn = NULL; -- --#ifdef VALGRIND_TEST -- tn = YMALLOC(sizeof(yaffs_Object)); --#else -- /* If there are none left make more */ -- if (!dev->freeObjects) -- yaffs_CreateFreeObjects(dev, YAFFS_ALLOCATION_NOBJECTS); -- -- if (dev->freeObjects) { -- tn = dev->freeObjects; -- dev->freeObjects = -- (yaffs_Object *) (dev->freeObjects->siblings.next); -- dev->nFreeObjects--; -- } --#endif -- if (tn) { -- /* Now sweeten it up... */ -- -- memset(tn, 0, sizeof(yaffs_Object)); -- tn->beingCreated = 1; -- -- tn->myDev = dev; -- tn->hdrChunk = 0; -- tn->variantType = YAFFS_OBJECT_TYPE_UNKNOWN; -- YINIT_LIST_HEAD(&(tn->hardLinks)); -- YINIT_LIST_HEAD(&(tn->hashLink)); -- YINIT_LIST_HEAD(&tn->siblings); -- -- -- /* Now make the directory sane */ -- if (dev->rootDir) { -- tn->parent = dev->rootDir; -- ylist_add(&(tn->siblings), &dev->rootDir->variant.directoryVariant.children); -- } -- -- /* Add it to the lost and found directory. -- * NB Can't put root or lostNFound in lostNFound so -- * check if lostNFound exists first -- */ -- if (dev->lostNFoundDir) -- yaffs_AddObjectToDirectory(dev->lostNFoundDir, tn); -- -- tn->beingCreated = 0; -- } -- -- dev->nCheckpointBlocksRequired = 0; /* force recalculation*/ -- -- return tn; --} -- --static yaffs_Object *yaffs_CreateFakeDirectory(yaffs_Device *dev, int number, -- __u32 mode) --{ -- -- yaffs_Object *obj = -- yaffs_CreateNewObject(dev, number, YAFFS_OBJECT_TYPE_DIRECTORY); -- if (obj) { -- obj->fake = 1; /* it is fake so it might have no NAND presence... */ -- obj->renameAllowed = 0; /* ... and we're not allowed to rename it... */ -- obj->unlinkAllowed = 0; /* ... or unlink it */ -- obj->deleted = 0; -- obj->unlinked = 0; -- obj->yst_mode = mode; -- obj->myDev = dev; -- obj->hdrChunk = 0; /* Not a valid chunk. */ -- } -- -- return obj; -- --} -- --static void yaffs_UnhashObject(yaffs_Object *tn) --{ -- int bucket; -- yaffs_Device *dev = tn->myDev; -- -- /* If it is still linked into the bucket list, free from the list */ -- if (!ylist_empty(&tn->hashLink)) { -- ylist_del_init(&tn->hashLink); -- bucket = yaffs_HashFunction(tn->objectId); -- dev->objectBucket[bucket].count--; -- } --} -- --/* FreeObject frees up a Object and puts it back on the free list */ --static void yaffs_FreeObject(yaffs_Object *tn) --{ -- yaffs_Device *dev = tn->myDev; -- --#ifdef __KERNEL__ -- T(YAFFS_TRACE_OS, (TSTR("FreeObject %p inode %p"TENDSTR), tn, tn->myInode)); --#endif -- -- if (tn->parent) -- YBUG(); -- if (!ylist_empty(&tn->siblings)) -- YBUG(); -- -- --#ifdef __KERNEL__ -- if (tn->myInode) { -- /* We're still hooked up to a cached inode. -- * Don't delete now, but mark for later deletion -- */ -- tn->deferedFree = 1; -- return; -- } --#endif -- -- yaffs_UnhashObject(tn); -- --#ifdef VALGRIND_TEST -- YFREE(tn); --#else -- /* Link into the free list. */ -- tn->siblings.next = (struct ylist_head *)(dev->freeObjects); -- dev->freeObjects = tn; -- dev->nFreeObjects++; --#endif -- dev->nCheckpointBlocksRequired = 0; /* force recalculation*/ --} -- --#ifdef __KERNEL__ -- --void yaffs_HandleDeferedFree(yaffs_Object *obj) --{ -- if (obj->deferedFree) -- yaffs_FreeObject(obj); --} -- --#endif -- --static void yaffs_DeinitialiseObjects(yaffs_Device *dev) --{ -- /* Free the list of allocated Objects */ -- -- yaffs_ObjectList *tmp; -- -- while (dev->allocatedObjectList) { -- tmp = dev->allocatedObjectList->next; -- YFREE(dev->allocatedObjectList->objects); -- YFREE(dev->allocatedObjectList); -- -- dev->allocatedObjectList = tmp; -- } -- -- dev->freeObjects = NULL; -- dev->nFreeObjects = 0; --} -- --static void yaffs_InitialiseObjects(yaffs_Device *dev) --{ -- int i; -- -- dev->allocatedObjectList = NULL; -- dev->freeObjects = NULL; -- dev->nFreeObjects = 0; -- -- for (i = 0; i < YAFFS_NOBJECT_BUCKETS; i++) { -- YINIT_LIST_HEAD(&dev->objectBucket[i].list); -- dev->objectBucket[i].count = 0; -- } --} -- --static int yaffs_FindNiceObjectBucket(yaffs_Device *dev) --{ -- static int x; -- int i; -- int l = 999; -- int lowest = 999999; -- -- /* First let's see if we can find one that's empty. */ -- -- for (i = 0; i < 10 && lowest > 0; i++) { -- x++; -- x %= YAFFS_NOBJECT_BUCKETS; -- if (dev->objectBucket[x].count < lowest) { -- lowest = dev->objectBucket[x].count; -- l = x; -- } -- -- } -- -- /* If we didn't find an empty list, then try -- * looking a bit further for a short one -- */ -- -- for (i = 0; i < 10 && lowest > 3; i++) { -- x++; -- x %= YAFFS_NOBJECT_BUCKETS; -- if (dev->objectBucket[x].count < lowest) { -- lowest = dev->objectBucket[x].count; -- l = x; -- } -- -- } -- -- return l; --} -- --static int yaffs_CreateNewObjectNumber(yaffs_Device *dev) --{ -- int bucket = yaffs_FindNiceObjectBucket(dev); -- -- /* Now find an object value that has not already been taken -- * by scanning the list. -- */ -- -- int found = 0; -- struct ylist_head *i; -- -- __u32 n = (__u32) bucket; -- -- /* yaffs_CheckObjectHashSanity(); */ -- -- while (!found) { -- found = 1; -- n += YAFFS_NOBJECT_BUCKETS; -- if (1 || dev->objectBucket[bucket].count > 0) { -- ylist_for_each(i, &dev->objectBucket[bucket].list) { -- /* If there is already one in the list */ -- if (i && ylist_entry(i, yaffs_Object, -- hashLink)->objectId == n) { -- found = 0; -- } -- } -- } -- } -- -- return n; --} -- --static void yaffs_HashObject(yaffs_Object *in) --{ -- int bucket = yaffs_HashFunction(in->objectId); -- yaffs_Device *dev = in->myDev; -- -- ylist_add(&in->hashLink, &dev->objectBucket[bucket].list); -- dev->objectBucket[bucket].count++; --} -- --yaffs_Object *yaffs_FindObjectByNumber(yaffs_Device *dev, __u32 number) --{ -- int bucket = yaffs_HashFunction(number); -- struct ylist_head *i; -- yaffs_Object *in; -- -- ylist_for_each(i, &dev->objectBucket[bucket].list) { -- /* Look if it is in the list */ -- if (i) { -- in = ylist_entry(i, yaffs_Object, hashLink); -- if (in->objectId == number) { --#ifdef __KERNEL__ -- /* Don't tell the VFS about this one if it is defered free */ -- if (in->deferedFree) -- return NULL; --#endif -- -- return in; -- } -- } -- } -- -- return NULL; --} -- --yaffs_Object *yaffs_CreateNewObject(yaffs_Device *dev, int number, -- yaffs_ObjectType type) --{ -- yaffs_Object *theObject; -- yaffs_Tnode *tn = NULL; -- -- if (number < 0) -- number = yaffs_CreateNewObjectNumber(dev); -- -- theObject = yaffs_AllocateEmptyObject(dev); -- if (!theObject) -- return NULL; -- -- if (type == YAFFS_OBJECT_TYPE_FILE) { -- tn = yaffs_GetTnode(dev); -- if (!tn) { -- yaffs_FreeObject(theObject); -- return NULL; -- } -- } -- -- if (theObject) { -- theObject->fake = 0; -- theObject->renameAllowed = 1; -- theObject->unlinkAllowed = 1; -- theObject->objectId = number; -- yaffs_HashObject(theObject); -- theObject->variantType = type; --#ifdef CONFIG_YAFFS_WINCE -- yfsd_WinFileTimeNow(theObject->win_atime); -- theObject->win_ctime[0] = theObject->win_mtime[0] = -- theObject->win_atime[0]; -- theObject->win_ctime[1] = theObject->win_mtime[1] = -- theObject->win_atime[1]; -- --#else -- -- theObject->yst_atime = theObject->yst_mtime = -- theObject->yst_ctime = Y_CURRENT_TIME; --#endif -- switch (type) { -- case YAFFS_OBJECT_TYPE_FILE: -- theObject->variant.fileVariant.fileSize = 0; -- theObject->variant.fileVariant.scannedFileSize = 0; -- theObject->variant.fileVariant.shrinkSize = 0xFFFFFFFF; /* max __u32 */ -- theObject->variant.fileVariant.topLevel = 0; -- theObject->variant.fileVariant.top = tn; -- break; -- case YAFFS_OBJECT_TYPE_DIRECTORY: -- YINIT_LIST_HEAD(&theObject->variant.directoryVariant. -- children); -- break; -- case YAFFS_OBJECT_TYPE_SYMLINK: -- case YAFFS_OBJECT_TYPE_HARDLINK: -- case YAFFS_OBJECT_TYPE_SPECIAL: -- /* No action required */ -- break; -- case YAFFS_OBJECT_TYPE_UNKNOWN: -- /* todo this should not happen */ -- break; -- } -- } -- -- return theObject; --} -- --static yaffs_Object *yaffs_FindOrCreateObjectByNumber(yaffs_Device *dev, -- int number, -- yaffs_ObjectType type) --{ -- yaffs_Object *theObject = NULL; -- -- if (number > 0) -- theObject = yaffs_FindObjectByNumber(dev, number); -- -- if (!theObject) -- theObject = yaffs_CreateNewObject(dev, number, type); -- -- return theObject; -- --} -- -- --static YCHAR *yaffs_CloneString(const YCHAR *str) --{ -- YCHAR *newStr = NULL; -- -- if (str && *str) { -- newStr = YMALLOC((yaffs_strlen(str) + 1) * sizeof(YCHAR)); -- if (newStr) -- yaffs_strcpy(newStr, str); -- } -- -- return newStr; -- --} -- --/* -- * Mknod (create) a new object. -- * equivalentObject only has meaning for a hard link; -- * aliasString only has meaning for a sumlink. -- * rdev only has meaning for devices (a subset of special objects) -- */ -- --static yaffs_Object *yaffs_MknodObject(yaffs_ObjectType type, -- yaffs_Object *parent, -- const YCHAR *name, -- __u32 mode, -- __u32 uid, -- __u32 gid, -- yaffs_Object *equivalentObject, -- const YCHAR *aliasString, __u32 rdev) --{ -- yaffs_Object *in; -- YCHAR *str = NULL; -- -- yaffs_Device *dev = parent->myDev; -- -- /* Check if the entry exists. If it does then fail the call since we don't want a dup.*/ -- if (yaffs_FindObjectByName(parent, name)) -- return NULL; -- -- in = yaffs_CreateNewObject(dev, -1, type); -- -- if (!in) -- return YAFFS_FAIL; -- -- if (type == YAFFS_OBJECT_TYPE_SYMLINK) { -- str = yaffs_CloneString(aliasString); -- if (!str) { -- yaffs_FreeObject(in); -- return NULL; -- } -- } -- -- -- -- if (in) { -- in->hdrChunk = 0; -- in->valid = 1; -- in->variantType = type; -- -- in->yst_mode = mode; -- --#ifdef CONFIG_YAFFS_WINCE -- yfsd_WinFileTimeNow(in->win_atime); -- in->win_ctime[0] = in->win_mtime[0] = in->win_atime[0]; -- in->win_ctime[1] = in->win_mtime[1] = in->win_atime[1]; -- --#else -- in->yst_atime = in->yst_mtime = in->yst_ctime = Y_CURRENT_TIME; -- -- in->yst_rdev = rdev; -- in->yst_uid = uid; -- in->yst_gid = gid; --#endif -- in->nDataChunks = 0; -- -- yaffs_SetObjectName(in, name); -- in->dirty = 1; -- -- yaffs_AddObjectToDirectory(parent, in); -- -- in->myDev = parent->myDev; -- -- switch (type) { -- case YAFFS_OBJECT_TYPE_SYMLINK: -- in->variant.symLinkVariant.alias = str; -- break; -- case YAFFS_OBJECT_TYPE_HARDLINK: -- in->variant.hardLinkVariant.equivalentObject = -- equivalentObject; -- in->variant.hardLinkVariant.equivalentObjectId = -- equivalentObject->objectId; -- ylist_add(&in->hardLinks, &equivalentObject->hardLinks); -- break; -- case YAFFS_OBJECT_TYPE_FILE: -- case YAFFS_OBJECT_TYPE_DIRECTORY: -- case YAFFS_OBJECT_TYPE_SPECIAL: -- case YAFFS_OBJECT_TYPE_UNKNOWN: -- /* do nothing */ -- break; -- } -- -- if (yaffs_UpdateObjectHeader(in, name, 0, 0, 0) < 0) { -- /* Could not create the object header, fail the creation */ -- yaffs_DeleteObject(in); -- in = NULL; -- } -- -- } -- -- return in; --} -- --yaffs_Object *yaffs_MknodFile(yaffs_Object *parent, const YCHAR *name, -- __u32 mode, __u32 uid, __u32 gid) --{ -- return yaffs_MknodObject(YAFFS_OBJECT_TYPE_FILE, parent, name, mode, -- uid, gid, NULL, NULL, 0); --} -- --yaffs_Object *yaffs_MknodDirectory(yaffs_Object *parent, const YCHAR *name, -- __u32 mode, __u32 uid, __u32 gid) --{ -- return yaffs_MknodObject(YAFFS_OBJECT_TYPE_DIRECTORY, parent, name, -- mode, uid, gid, NULL, NULL, 0); --} -- --yaffs_Object *yaffs_MknodSpecial(yaffs_Object *parent, const YCHAR *name, -- __u32 mode, __u32 uid, __u32 gid, __u32 rdev) --{ -- return yaffs_MknodObject(YAFFS_OBJECT_TYPE_SPECIAL, parent, name, mode, -- uid, gid, NULL, NULL, rdev); --} -- --yaffs_Object *yaffs_MknodSymLink(yaffs_Object *parent, const YCHAR *name, -- __u32 mode, __u32 uid, __u32 gid, -- const YCHAR *alias) --{ -- return yaffs_MknodObject(YAFFS_OBJECT_TYPE_SYMLINK, parent, name, mode, -- uid, gid, NULL, alias, 0); --} -- --/* yaffs_Link returns the object id of the equivalent object.*/ --yaffs_Object *yaffs_Link(yaffs_Object *parent, const YCHAR *name, -- yaffs_Object *equivalentObject) --{ -- /* Get the real object in case we were fed a hard link as an equivalent object */ -- equivalentObject = yaffs_GetEquivalentObject(equivalentObject); -- -- if (yaffs_MknodObject -- (YAFFS_OBJECT_TYPE_HARDLINK, parent, name, 0, 0, 0, -- equivalentObject, NULL, 0)) { -- return equivalentObject; -- } else { -- return NULL; -- } -- --} -- --static int yaffs_ChangeObjectName(yaffs_Object *obj, yaffs_Object *newDir, -- const YCHAR *newName, int force, int shadows) --{ -- int unlinkOp; -- int deleteOp; -- -- yaffs_Object *existingTarget; -- -- if (newDir == NULL) -- newDir = obj->parent; /* use the old directory */ -- -- if (newDir->variantType != YAFFS_OBJECT_TYPE_DIRECTORY) { -- T(YAFFS_TRACE_ALWAYS, -- (TSTR -- ("tragedy: yaffs_ChangeObjectName: newDir is not a directory" -- TENDSTR))); -- YBUG(); -- } -- -- /* TODO: Do we need this different handling for YAFFS2 and YAFFS1?? */ -- if (obj->myDev->isYaffs2) -- unlinkOp = (newDir == obj->myDev->unlinkedDir); -- else -- unlinkOp = (newDir == obj->myDev->unlinkedDir -- && obj->variantType == YAFFS_OBJECT_TYPE_FILE); -- -- deleteOp = (newDir == obj->myDev->deletedDir); -- -- existingTarget = yaffs_FindObjectByName(newDir, newName); -- -- /* If the object is a file going into the unlinked directory, -- * then it is OK to just stuff it in since duplicate names are allowed. -- * else only proceed if the new name does not exist and if we're putting -- * it into a directory. -- */ -- if ((unlinkOp || -- deleteOp || -- force || -- (shadows > 0) || -- !existingTarget) && -- newDir->variantType == YAFFS_OBJECT_TYPE_DIRECTORY) { -- yaffs_SetObjectName(obj, newName); -- obj->dirty = 1; -- -- yaffs_AddObjectToDirectory(newDir, obj); -- -- if (unlinkOp) -- obj->unlinked = 1; -- -- /* If it is a deletion then we mark it as a shrink for gc purposes. */ -- if (yaffs_UpdateObjectHeader(obj, newName, 0, deleteOp, shadows) >= 0) -- return YAFFS_OK; -- } -- -- return YAFFS_FAIL; --} -- --int yaffs_RenameObject(yaffs_Object *oldDir, const YCHAR *oldName, -- yaffs_Object *newDir, const YCHAR *newName) --{ -- yaffs_Object *obj = NULL; -- yaffs_Object *existingTarget = NULL; -- int force = 0; -- -- -- if (!oldDir || oldDir->variantType != YAFFS_OBJECT_TYPE_DIRECTORY) -- YBUG(); -- if (!newDir || newDir->variantType != YAFFS_OBJECT_TYPE_DIRECTORY) -- YBUG(); -- --#ifdef CONFIG_YAFFS_CASE_INSENSITIVE -- /* Special case for case insemsitive systems (eg. WinCE). -- * While look-up is case insensitive, the name isn't. -- * Therefore we might want to change x.txt to X.txt -- */ -- if (oldDir == newDir && yaffs_strcmp(oldName, newName) == 0) -- force = 1; --#endif -- -- else if (yaffs_strlen(newName) > YAFFS_MAX_NAME_LENGTH) -- /* ENAMETOOLONG */ -- return YAFFS_FAIL; -- -- obj = yaffs_FindObjectByName(oldDir, oldName); -- -- if (obj && obj->renameAllowed) { -- -- /* Now do the handling for an existing target, if there is one */ -- -- existingTarget = yaffs_FindObjectByName(newDir, newName); -- if (existingTarget && -- existingTarget->variantType == YAFFS_OBJECT_TYPE_DIRECTORY && -- !ylist_empty(&existingTarget->variant.directoryVariant.children)) { -- /* There is a target that is a non-empty directory, so we fail */ -- return YAFFS_FAIL; /* EEXIST or ENOTEMPTY */ -- } else if (existingTarget && existingTarget != obj) { -- /* Nuke the target first, using shadowing, -- * but only if it isn't the same object -- */ -- yaffs_ChangeObjectName(obj, newDir, newName, force, -- existingTarget->objectId); -- yaffs_UnlinkObject(existingTarget); -- } -- -- return yaffs_ChangeObjectName(obj, newDir, newName, 1, 0); -- } -- return YAFFS_FAIL; --} -- --/*------------------------- Block Management and Page Allocation ----------------*/ -- --static int yaffs_InitialiseBlocks(yaffs_Device *dev) --{ -- int nBlocks = dev->internalEndBlock - dev->internalStartBlock + 1; -- -- dev->blockInfo = NULL; -- dev->chunkBits = NULL; -- -- dev->allocationBlock = -1; /* force it to get a new one */ -- -- /* If the first allocation strategy fails, thry the alternate one */ -- dev->blockInfo = YMALLOC(nBlocks * sizeof(yaffs_BlockInfo)); -- if (!dev->blockInfo) { -- dev->blockInfo = YMALLOC_ALT(nBlocks * sizeof(yaffs_BlockInfo)); -- dev->blockInfoAlt = 1; -- } else -- dev->blockInfoAlt = 0; -- -- if (dev->blockInfo) { -- /* Set up dynamic blockinfo stuff. */ -- dev->chunkBitmapStride = (dev->nChunksPerBlock + 7) / 8; /* round up bytes */ -- dev->chunkBits = YMALLOC(dev->chunkBitmapStride * nBlocks); -- if (!dev->chunkBits) { -- dev->chunkBits = YMALLOC_ALT(dev->chunkBitmapStride * nBlocks); -- dev->chunkBitsAlt = 1; -- } else -- dev->chunkBitsAlt = 0; -- } -- -- if (dev->blockInfo && dev->chunkBits) { -- memset(dev->blockInfo, 0, nBlocks * sizeof(yaffs_BlockInfo)); -- memset(dev->chunkBits, 0, dev->chunkBitmapStride * nBlocks); -- return YAFFS_OK; -- } -- -- return YAFFS_FAIL; --} -- --static void yaffs_DeinitialiseBlocks(yaffs_Device *dev) --{ -- if (dev->blockInfoAlt && dev->blockInfo) -- YFREE_ALT(dev->blockInfo); -- else if (dev->blockInfo) -- YFREE(dev->blockInfo); -- -- dev->blockInfoAlt = 0; -- -- dev->blockInfo = NULL; -- -- if (dev->chunkBitsAlt && dev->chunkBits) -- YFREE_ALT(dev->chunkBits); -- else if (dev->chunkBits) -- YFREE(dev->chunkBits); -- dev->chunkBitsAlt = 0; -- dev->chunkBits = NULL; --} -- --static int yaffs_BlockNotDisqualifiedFromGC(yaffs_Device *dev, -- yaffs_BlockInfo *bi) --{ -- int i; -- __u32 seq; -- yaffs_BlockInfo *b; -- -- if (!dev->isYaffs2) -- return 1; /* disqualification only applies to yaffs2. */ -- -- if (!bi->hasShrinkHeader) -- return 1; /* can gc */ -- -- /* Find the oldest dirty sequence number if we don't know it and save it -- * so we don't have to keep recomputing it. -- */ -- if (!dev->oldestDirtySequence) { -- seq = dev->sequenceNumber; -- -- for (i = dev->internalStartBlock; i <= dev->internalEndBlock; -- i++) { -- b = yaffs_GetBlockInfo(dev, i); -- if (b->blockState == YAFFS_BLOCK_STATE_FULL && -- (b->pagesInUse - b->softDeletions) < -- dev->nChunksPerBlock && b->sequenceNumber < seq) { -- seq = b->sequenceNumber; -- } -- } -- dev->oldestDirtySequence = seq; -- } -- -- /* Can't do gc of this block if there are any blocks older than this one that have -- * discarded pages. -- */ -- return (bi->sequenceNumber <= dev->oldestDirtySequence); --} -- --/* FindDiretiestBlock is used to select the dirtiest block (or close enough) -- * for garbage collection. -- */ -- --static int yaffs_FindBlockForGarbageCollection(yaffs_Device *dev, -- int aggressive) --{ -- int b = dev->currentDirtyChecker; -- -- int i; -- int iterations; -- int dirtiest = -1; -- int pagesInUse = 0; -- int prioritised = 0; -- yaffs_BlockInfo *bi; -- int pendingPrioritisedExist = 0; -- -- /* First let's see if we need to grab a prioritised block */ -- if (dev->hasPendingPrioritisedGCs) { -- for (i = dev->internalStartBlock; i < dev->internalEndBlock && !prioritised; i++) { -- -- bi = yaffs_GetBlockInfo(dev, i); -- /* yaffs_VerifyBlock(dev,bi,i); */ -- -- if (bi->gcPrioritise) { -- pendingPrioritisedExist = 1; -- if (bi->blockState == YAFFS_BLOCK_STATE_FULL && -- yaffs_BlockNotDisqualifiedFromGC(dev, bi)) { -- pagesInUse = (bi->pagesInUse - bi->softDeletions); -- dirtiest = i; -- prioritised = 1; -- aggressive = 1; /* Fool the non-aggressive skip logiv below */ -- } -- } -- } -- -- if (!pendingPrioritisedExist) /* None found, so we can clear this */ -- dev->hasPendingPrioritisedGCs = 0; -- } -- -- /* If we're doing aggressive GC then we are happy to take a less-dirty block, and -- * search harder. -- * else (we're doing a leasurely gc), then we only bother to do this if the -- * block has only a few pages in use. -- */ -- -- dev->nonAggressiveSkip--; -- -- if (!aggressive && (dev->nonAggressiveSkip > 0)) -- return -1; -- -- if (!prioritised) -- pagesInUse = -- (aggressive) ? dev->nChunksPerBlock : YAFFS_PASSIVE_GC_CHUNKS + 1; -- -- if (aggressive) -- iterations = -- dev->internalEndBlock - dev->internalStartBlock + 1; -- else { -- iterations = -- dev->internalEndBlock - dev->internalStartBlock + 1; -- iterations = iterations / 16; -- if (iterations > 200) -- iterations = 200; -- } -- -- for (i = 0; i <= iterations && pagesInUse > 0 && !prioritised; i++) { -- b++; -- if (b < dev->internalStartBlock || b > dev->internalEndBlock) -- b = dev->internalStartBlock; -- -- if (b < dev->internalStartBlock || b > dev->internalEndBlock) { -- T(YAFFS_TRACE_ERROR, -- (TSTR("**>> Block %d is not valid" TENDSTR), b)); -- YBUG(); -- } -- -- bi = yaffs_GetBlockInfo(dev, b); -- -- if (bi->blockState == YAFFS_BLOCK_STATE_FULL && -- (bi->pagesInUse - bi->softDeletions) < pagesInUse && -- yaffs_BlockNotDisqualifiedFromGC(dev, bi)) { -- dirtiest = b; -- pagesInUse = (bi->pagesInUse - bi->softDeletions); -- } -- } -- -- dev->currentDirtyChecker = b; -- -- if (dirtiest > 0) { -- T(YAFFS_TRACE_GC, -- (TSTR("GC Selected block %d with %d free, prioritised:%d" TENDSTR), dirtiest, -- dev->nChunksPerBlock - pagesInUse, prioritised)); -- } -- -- dev->oldestDirtySequence = 0; -- -- if (dirtiest > 0) -- dev->nonAggressiveSkip = 4; -- -- return dirtiest; --} -- --static void yaffs_BlockBecameDirty(yaffs_Device *dev, int blockNo) --{ -- yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, blockNo); -- -- int erasedOk = 0; -- -- /* If the block is still healthy erase it and mark as clean. -- * If the block has had a data failure, then retire it. -- */ -- -- T(YAFFS_TRACE_GC | YAFFS_TRACE_ERASE, -- (TSTR("yaffs_BlockBecameDirty block %d state %d %s"TENDSTR), -- blockNo, bi->blockState, (bi->needsRetiring) ? "needs retiring" : "")); -- -- bi->blockState = YAFFS_BLOCK_STATE_DIRTY; -- -- if (!bi->needsRetiring) { -- yaffs_InvalidateCheckpoint(dev); -- erasedOk = yaffs_EraseBlockInNAND(dev, blockNo); -- if (!erasedOk) { -- dev->nErasureFailures++; -- T(YAFFS_TRACE_ERROR | YAFFS_TRACE_BAD_BLOCKS, -- (TSTR("**>> Erasure failed %d" TENDSTR), blockNo)); -- } -- } -- -- if (erasedOk && -- ((yaffs_traceMask & YAFFS_TRACE_ERASE) || !yaffs_SkipVerification(dev))) { -- int i; -- for (i = 0; i < dev->nChunksPerBlock; i++) { -- if (!yaffs_CheckChunkErased -- (dev, blockNo * dev->nChunksPerBlock + i)) { -- T(YAFFS_TRACE_ERROR, -- (TSTR -- (">>Block %d erasure supposedly OK, but chunk %d not erased" -- TENDSTR), blockNo, i)); -- } -- } -- } -- -- if (erasedOk) { -- /* Clean it up... */ -- bi->blockState = YAFFS_BLOCK_STATE_EMPTY; -- dev->nErasedBlocks++; -- bi->pagesInUse = 0; -- bi->softDeletions = 0; -- bi->hasShrinkHeader = 0; -- bi->skipErasedCheck = 1; /* This is clean, so no need to check */ -- bi->gcPrioritise = 0; -- yaffs_ClearChunkBits(dev, blockNo); -- -- T(YAFFS_TRACE_ERASE, -- (TSTR("Erased block %d" TENDSTR), blockNo)); -- } else { -- dev->nFreeChunks -= dev->nChunksPerBlock; /* We lost a block of free space */ -- -- yaffs_RetireBlock(dev, blockNo); -- T(YAFFS_TRACE_ERROR | YAFFS_TRACE_BAD_BLOCKS, -- (TSTR("**>> Block %d retired" TENDSTR), blockNo)); -- } --} -- --static int yaffs_FindBlockForAllocation(yaffs_Device *dev) --{ -- int i; -- -- yaffs_BlockInfo *bi; -- -- if (dev->nErasedBlocks < 1) { -- /* Hoosterman we've got a problem. -- * Can't get space to gc -- */ -- T(YAFFS_TRACE_ERROR, -- (TSTR("yaffs tragedy: no more erased blocks" TENDSTR))); -- -- return -1; -- } -- -- /* Find an empty block. */ -- -- for (i = dev->internalStartBlock; i <= dev->internalEndBlock; i++) { -- dev->allocationBlockFinder++; -- if (dev->allocationBlockFinder < dev->internalStartBlock -- || dev->allocationBlockFinder > dev->internalEndBlock) { -- dev->allocationBlockFinder = dev->internalStartBlock; -- } -- -- bi = yaffs_GetBlockInfo(dev, dev->allocationBlockFinder); -- -- if (bi->blockState == YAFFS_BLOCK_STATE_EMPTY) { -- bi->blockState = YAFFS_BLOCK_STATE_ALLOCATING; -- dev->sequenceNumber++; -- bi->sequenceNumber = dev->sequenceNumber; -- dev->nErasedBlocks--; -- T(YAFFS_TRACE_ALLOCATE, -- (TSTR("Allocated block %d, seq %d, %d left" TENDSTR), -- dev->allocationBlockFinder, dev->sequenceNumber, -- dev->nErasedBlocks)); -- return dev->allocationBlockFinder; -- } -- } -- -- T(YAFFS_TRACE_ALWAYS, -- (TSTR -- ("yaffs tragedy: no more erased blocks, but there should have been %d" -- TENDSTR), dev->nErasedBlocks)); -- -- return -1; --} -- -- -- --static int yaffs_CalcCheckpointBlocksRequired(yaffs_Device *dev) --{ -- if (!dev->nCheckpointBlocksRequired && -- dev->isYaffs2) { -- /* Not a valid value so recalculate */ -- int nBytes = 0; -- int nBlocks; -- int devBlocks = (dev->endBlock - dev->startBlock + 1); -- int tnodeSize; -- -- tnodeSize = (dev->tnodeWidth * YAFFS_NTNODES_LEVEL0)/8; -- -- if (tnodeSize < sizeof(yaffs_Tnode)) -- tnodeSize = sizeof(yaffs_Tnode); -- -- nBytes += sizeof(yaffs_CheckpointValidity); -- nBytes += sizeof(yaffs_CheckpointDevice); -- nBytes += devBlocks * sizeof(yaffs_BlockInfo); -- nBytes += devBlocks * dev->chunkBitmapStride; -- nBytes += (sizeof(yaffs_CheckpointObject) + sizeof(__u32)) * (dev->nObjectsCreated - dev->nFreeObjects); -- nBytes += (tnodeSize + sizeof(__u32)) * (dev->nTnodesCreated - dev->nFreeTnodes); -- nBytes += sizeof(yaffs_CheckpointValidity); -- nBytes += sizeof(__u32); /* checksum*/ -- -- /* Round up and add 2 blocks to allow for some bad blocks, so add 3 */ -- -- nBlocks = (nBytes/(dev->nDataBytesPerChunk * dev->nChunksPerBlock)) + 3; -- -- dev->nCheckpointBlocksRequired = nBlocks; -- } -- -- return dev->nCheckpointBlocksRequired; --} -- --/* -- * Check if there's space to allocate... -- * Thinks.... do we need top make this ths same as yaffs_GetFreeChunks()? -- */ --static int yaffs_CheckSpaceForAllocation(yaffs_Device *dev) --{ -- int reservedChunks; -- int reservedBlocks = dev->nReservedBlocks; -- int checkpointBlocks; -- -- if (dev->isYaffs2) { -- checkpointBlocks = yaffs_CalcCheckpointBlocksRequired(dev) - -- dev->blocksInCheckpoint; -- if (checkpointBlocks < 0) -- checkpointBlocks = 0; -- } else { -- checkpointBlocks = 0; -- } -- -- reservedChunks = ((reservedBlocks + checkpointBlocks) * dev->nChunksPerBlock); -- -- return (dev->nFreeChunks > reservedChunks); --} -- --static int yaffs_AllocateChunk(yaffs_Device *dev, int useReserve, -- yaffs_BlockInfo **blockUsedPtr) --{ -- int retVal; -- yaffs_BlockInfo *bi; -- -- if (dev->allocationBlock < 0) { -- /* Get next block to allocate off */ -- dev->allocationBlock = yaffs_FindBlockForAllocation(dev); -- dev->allocationPage = 0; -- } -- -- if (!useReserve && !yaffs_CheckSpaceForAllocation(dev)) { -- /* Not enough space to allocate unless we're allowed to use the reserve. */ -- return -1; -- } -- -- if (dev->nErasedBlocks < dev->nReservedBlocks -- && dev->allocationPage == 0) { -- T(YAFFS_TRACE_ALLOCATE, (TSTR("Allocating reserve" TENDSTR))); -- } -- -- /* Next page please.... */ -- if (dev->allocationBlock >= 0) { -- bi = yaffs_GetBlockInfo(dev, dev->allocationBlock); -- -- retVal = (dev->allocationBlock * dev->nChunksPerBlock) + -- dev->allocationPage; -- bi->pagesInUse++; -- yaffs_SetChunkBit(dev, dev->allocationBlock, -- dev->allocationPage); -- -- dev->allocationPage++; -- -- dev->nFreeChunks--; -- -- /* If the block is full set the state to full */ -- if (dev->allocationPage >= dev->nChunksPerBlock) { -- bi->blockState = YAFFS_BLOCK_STATE_FULL; -- dev->allocationBlock = -1; -- } -- -- if (blockUsedPtr) -- *blockUsedPtr = bi; -- -- return retVal; -- } -- -- T(YAFFS_TRACE_ERROR, -- (TSTR("!!!!!!!!! Allocator out !!!!!!!!!!!!!!!!!" TENDSTR))); -- -- return -1; --} -- --static int yaffs_GetErasedChunks(yaffs_Device *dev) --{ -- int n; -- -- n = dev->nErasedBlocks * dev->nChunksPerBlock; -- -- if (dev->allocationBlock > 0) -- n += (dev->nChunksPerBlock - dev->allocationPage); -- -- return n; -- --} -- --static int yaffs_GarbageCollectBlock(yaffs_Device *dev, int block, -- int wholeBlock) --{ -- int oldChunk; -- int newChunk; -- int markNAND; -- int retVal = YAFFS_OK; -- int cleanups = 0; -- int i; -- int isCheckpointBlock; -- int matchingChunk; -- int maxCopies; -- -- int chunksBefore = yaffs_GetErasedChunks(dev); -- int chunksAfter; -- -- yaffs_ExtendedTags tags; -- -- yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, block); -- -- yaffs_Object *object; -- -- isCheckpointBlock = (bi->blockState == YAFFS_BLOCK_STATE_CHECKPOINT); -- -- bi->blockState = YAFFS_BLOCK_STATE_COLLECTING; -- -- T(YAFFS_TRACE_TRACING, -- (TSTR("Collecting block %d, in use %d, shrink %d, wholeBlock %d" TENDSTR), -- block, -- bi->pagesInUse, -- bi->hasShrinkHeader, -- wholeBlock)); -- -- /*yaffs_VerifyFreeChunks(dev); */ -- -- bi->hasShrinkHeader = 0; /* clear the flag so that the block can erase */ -- -- /* Take off the number of soft deleted entries because -- * they're going to get really deleted during GC. -- */ -- dev->nFreeChunks -= bi->softDeletions; -- -- dev->isDoingGC = 1; -- -- if (isCheckpointBlock || -- !yaffs_StillSomeChunkBits(dev, block)) { -- T(YAFFS_TRACE_TRACING, -- (TSTR -- ("Collecting block %d that has no chunks in use" TENDSTR), -- block)); -- yaffs_BlockBecameDirty(dev, block); -- } else { -- -- __u8 *buffer = yaffs_GetTempBuffer(dev, __LINE__); -- -- yaffs_VerifyBlock(dev, bi, block); -- -- maxCopies = (wholeBlock) ? dev->nChunksPerBlock : 10; -- oldChunk = block * dev->nChunksPerBlock + dev->gcChunk; -- -- for (/* init already done */; -- retVal == YAFFS_OK && -- dev->gcChunk < dev->nChunksPerBlock && -- (bi->blockState == YAFFS_BLOCK_STATE_COLLECTING) && -- maxCopies > 0; -- dev->gcChunk++, oldChunk++) { -- if (yaffs_CheckChunkBit(dev, block, dev->gcChunk)) { -- -- /* This page is in use and might need to be copied off */ -- -- maxCopies--; -- -- markNAND = 1; -- -- yaffs_InitialiseTags(&tags); -- -- yaffs_ReadChunkWithTagsFromNAND(dev, oldChunk, -- buffer, &tags); -- -- object = -- yaffs_FindObjectByNumber(dev, -- tags.objectId); -- -- T(YAFFS_TRACE_GC_DETAIL, -- (TSTR -- ("Collecting chunk in block %d, %d %d %d " TENDSTR), -- dev->gcChunk, tags.objectId, tags.chunkId, -- tags.byteCount)); -- -- if (object && !yaffs_SkipVerification(dev)) { -- if (tags.chunkId == 0) -- matchingChunk = object->hdrChunk; -- else if (object->softDeleted) -- matchingChunk = oldChunk; /* Defeat the test */ -- else -- matchingChunk = yaffs_FindChunkInFile(object, tags.chunkId, NULL); -- -- if (oldChunk != matchingChunk) -- T(YAFFS_TRACE_ERROR, -- (TSTR("gc: page in gc mismatch: %d %d %d %d"TENDSTR), -- oldChunk, matchingChunk, tags.objectId, tags.chunkId)); -- -- } -- -- if (!object) { -- T(YAFFS_TRACE_ERROR, -- (TSTR -- ("page %d in gc has no object: %d %d %d " -- TENDSTR), oldChunk, -- tags.objectId, tags.chunkId, tags.byteCount)); -- } -- -- if (object && -- object->deleted && -- object->softDeleted && -- tags.chunkId != 0) { -- /* Data chunk in a soft deleted file, throw it away -- * It's a soft deleted data chunk, -- * No need to copy this, just forget about it and -- * fix up the object. -- */ -- -- object->nDataChunks--; -- -- if (object->nDataChunks <= 0) { -- /* remeber to clean up the object */ -- dev->gcCleanupList[cleanups] = -- tags.objectId; -- cleanups++; -- } -- markNAND = 0; -- } else if (0) { -- /* Todo object && object->deleted && object->nDataChunks == 0 */ -- /* Deleted object header with no data chunks. -- * Can be discarded and the file deleted. -- */ -- object->hdrChunk = 0; -- yaffs_FreeTnode(object->myDev, -- object->variant. -- fileVariant.top); -- object->variant.fileVariant.top = NULL; -- yaffs_DoGenericObjectDeletion(object); -- -- } else if (object) { -- /* It's either a data chunk in a live file or -- * an ObjectHeader, so we're interested in it. -- * NB Need to keep the ObjectHeaders of deleted files -- * until the whole file has been deleted off -- */ -- tags.serialNumber++; -- -- dev->nGCCopies++; -- -- if (tags.chunkId == 0) { -- /* It is an object Id, -- * We need to nuke the shrinkheader flags first -- * We no longer want the shrinkHeader flag since its work is done -- * and if it is left in place it will mess up scanning. -- */ -- -- yaffs_ObjectHeader *oh; -- oh = (yaffs_ObjectHeader *)buffer; -- oh->isShrink = 0; -- tags.extraIsShrinkHeader = 0; -- -- yaffs_VerifyObjectHeader(object, oh, &tags, 1); -- } -- -- newChunk = -- yaffs_WriteNewChunkWithTagsToNAND(dev, buffer, &tags, 1); -- -- if (newChunk < 0) { -- retVal = YAFFS_FAIL; -- } else { -- -- /* Ok, now fix up the Tnodes etc. */ -- -- if (tags.chunkId == 0) { -- /* It's a header */ -- object->hdrChunk = newChunk; -- object->serial = tags.serialNumber; -- } else { -- /* It's a data chunk */ -- yaffs_PutChunkIntoFile -- (object, -- tags.chunkId, -- newChunk, 0); -- } -- } -- } -- -- if (retVal == YAFFS_OK) -- yaffs_DeleteChunk(dev, oldChunk, markNAND, __LINE__); -- -- } -- } -- -- yaffs_ReleaseTempBuffer(dev, buffer, __LINE__); -- -- -- /* Do any required cleanups */ -- for (i = 0; i < cleanups; i++) { -- /* Time to delete the file too */ -- object = -- yaffs_FindObjectByNumber(dev, -- dev->gcCleanupList[i]); -- if (object) { -- yaffs_FreeTnode(dev, -- object->variant.fileVariant. -- top); -- object->variant.fileVariant.top = NULL; -- T(YAFFS_TRACE_GC, -- (TSTR -- ("yaffs: About to finally delete object %d" -- TENDSTR), object->objectId)); -- yaffs_DoGenericObjectDeletion(object); -- object->myDev->nDeletedFiles--; -- } -- -- } -- -- } -- -- yaffs_VerifyCollectedBlock(dev, bi, block); -- -- chunksAfter = yaffs_GetErasedChunks(dev); -- if (chunksBefore >= chunksAfter) { -- T(YAFFS_TRACE_GC, -- (TSTR -- ("gc did not increase free chunks before %d after %d" -- TENDSTR), chunksBefore, chunksAfter)); -- } -- -- /* If the gc completed then clear the current gcBlock so that we find another. */ -- if (bi->blockState != YAFFS_BLOCK_STATE_COLLECTING) { -- dev->gcBlock = -1; -- dev->gcChunk = 0; -- } -- -- dev->isDoingGC = 0; -- -- return retVal; --} -- --/* New garbage collector -- * If we're very low on erased blocks then we do aggressive garbage collection -- * otherwise we do "leasurely" garbage collection. -- * Aggressive gc looks further (whole array) and will accept less dirty blocks. -- * Passive gc only inspects smaller areas and will only accept more dirty blocks. -- * -- * The idea is to help clear out space in a more spread-out manner. -- * Dunno if it really does anything useful. -- */ --static int yaffs_CheckGarbageCollection(yaffs_Device *dev) --{ -- int block; -- int aggressive; -- int gcOk = YAFFS_OK; -- int maxTries = 0; -- -- int checkpointBlockAdjust; -- -- if (dev->isDoingGC) { -- /* Bail out so we don't get recursive gc */ -- return YAFFS_OK; -- } -- -- /* This loop should pass the first time. -- * We'll only see looping here if the erase of the collected block fails. -- */ -- -- do { -- maxTries++; -- -- checkpointBlockAdjust = yaffs_CalcCheckpointBlocksRequired(dev) - dev->blocksInCheckpoint; -- if (checkpointBlockAdjust < 0) -- checkpointBlockAdjust = 0; -- -- if (dev->nErasedBlocks < (dev->nReservedBlocks + checkpointBlockAdjust + 2)) { -- /* We need a block soon...*/ -- aggressive = 1; -- } else { -- /* We're in no hurry */ -- aggressive = 0; -- } -- -- if (dev->gcBlock <= 0) { -- dev->gcBlock = yaffs_FindBlockForGarbageCollection(dev, aggressive); -- dev->gcChunk = 0; -- } -- -- block = dev->gcBlock; -- -- if (block > 0) { -- dev->garbageCollections++; -- if (!aggressive) -- dev->passiveGarbageCollections++; -- -- T(YAFFS_TRACE_GC, -- (TSTR -- ("yaffs: GC erasedBlocks %d aggressive %d" TENDSTR), -- dev->nErasedBlocks, aggressive)); -- -- gcOk = yaffs_GarbageCollectBlock(dev, block, aggressive); -- } -- -- if (dev->nErasedBlocks < (dev->nReservedBlocks) && block > 0) { -- T(YAFFS_TRACE_GC, -- (TSTR -- ("yaffs: GC !!!no reclaim!!! erasedBlocks %d after try %d block %d" -- TENDSTR), dev->nErasedBlocks, maxTries, block)); -- } -- } while ((dev->nErasedBlocks < dev->nReservedBlocks) && -- (block > 0) && -- (maxTries < 2)); -- -- return aggressive ? gcOk : YAFFS_OK; --} -- --/*------------------------- TAGS --------------------------------*/ -- --static int yaffs_TagsMatch(const yaffs_ExtendedTags *tags, int objectId, -- int chunkInObject) --{ -- return (tags->chunkId == chunkInObject && -- tags->objectId == objectId && !tags->chunkDeleted) ? 1 : 0; -- --} -- -- --/*-------------------- Data file manipulation -----------------*/ -- --static int yaffs_FindChunkInFile(yaffs_Object *in, int chunkInInode, -- yaffs_ExtendedTags *tags) --{ -- /*Get the Tnode, then get the level 0 offset chunk offset */ -- yaffs_Tnode *tn; -- int theChunk = -1; -- yaffs_ExtendedTags localTags; -- int retVal = -1; -- -- yaffs_Device *dev = in->myDev; -- -- if (!tags) { -- /* Passed a NULL, so use our own tags space */ -- tags = &localTags; -- } -- -- tn = yaffs_FindLevel0Tnode(dev, &in->variant.fileVariant, chunkInInode); -- -- if (tn) { -- theChunk = yaffs_GetChunkGroupBase(dev, tn, chunkInInode); -- -- retVal = -- yaffs_FindChunkInGroup(dev, theChunk, tags, in->objectId, -- chunkInInode); -- } -- return retVal; --} -- --static int yaffs_FindAndDeleteChunkInFile(yaffs_Object *in, int chunkInInode, -- yaffs_ExtendedTags *tags) --{ -- /* Get the Tnode, then get the level 0 offset chunk offset */ -- yaffs_Tnode *tn; -- int theChunk = -1; -- yaffs_ExtendedTags localTags; -- -- yaffs_Device *dev = in->myDev; -- int retVal = -1; -- -- if (!tags) { -- /* Passed a NULL, so use our own tags space */ -- tags = &localTags; -- } -- -- tn = yaffs_FindLevel0Tnode(dev, &in->variant.fileVariant, chunkInInode); -- -- if (tn) { -- -- theChunk = yaffs_GetChunkGroupBase(dev, tn, chunkInInode); -- -- retVal = -- yaffs_FindChunkInGroup(dev, theChunk, tags, in->objectId, -- chunkInInode); -- -- /* Delete the entry in the filestructure (if found) */ -- if (retVal != -1) -- yaffs_PutLevel0Tnode(dev, tn, chunkInInode, 0); -- } -- -- return retVal; --} -- --#ifdef YAFFS_PARANOID -- --static int yaffs_CheckFileSanity(yaffs_Object *in) --{ -- int chunk; -- int nChunks; -- int fSize; -- int failed = 0; -- int objId; -- yaffs_Tnode *tn; -- yaffs_Tags localTags; -- yaffs_Tags *tags = &localTags; -- int theChunk; -- int chunkDeleted; -- -- if (in->variantType != YAFFS_OBJECT_TYPE_FILE) -- return YAFFS_FAIL; -- -- objId = in->objectId; -- fSize = in->variant.fileVariant.fileSize; -- nChunks = -- (fSize + in->myDev->nDataBytesPerChunk - 1) / in->myDev->nDataBytesPerChunk; -- -- for (chunk = 1; chunk <= nChunks; chunk++) { -- tn = yaffs_FindLevel0Tnode(in->myDev, &in->variant.fileVariant, -- chunk); -- -- if (tn) { -- -- theChunk = yaffs_GetChunkGroupBase(dev, tn, chunk); -- -- if (yaffs_CheckChunkBits -- (dev, theChunk / dev->nChunksPerBlock, -- theChunk % dev->nChunksPerBlock)) { -- -- yaffs_ReadChunkTagsFromNAND(in->myDev, theChunk, -- tags, -- &chunkDeleted); -- if (yaffs_TagsMatch -- (tags, in->objectId, chunk, chunkDeleted)) { -- /* found it; */ -- -- } -- } else { -- -- failed = 1; -- } -- -- } else { -- /* T(("No level 0 found for %d\n", chunk)); */ -- } -- } -- -- return failed ? YAFFS_FAIL : YAFFS_OK; --} -- --#endif -- --static int yaffs_PutChunkIntoFile(yaffs_Object *in, int chunkInInode, -- int chunkInNAND, int inScan) --{ -- /* NB inScan is zero unless scanning. -- * For forward scanning, inScan is > 0; -- * for backward scanning inScan is < 0 -- */ -- -- yaffs_Tnode *tn; -- yaffs_Device *dev = in->myDev; -- int existingChunk; -- yaffs_ExtendedTags existingTags; -- yaffs_ExtendedTags newTags; -- unsigned existingSerial, newSerial; -- -- if (in->variantType != YAFFS_OBJECT_TYPE_FILE) { -- /* Just ignore an attempt at putting a chunk into a non-file during scanning -- * If it is not during Scanning then something went wrong! -- */ -- if (!inScan) { -- T(YAFFS_TRACE_ERROR, -- (TSTR -- ("yaffs tragedy:attempt to put data chunk into a non-file" -- TENDSTR))); -- YBUG(); -- } -- -- yaffs_DeleteChunk(dev, chunkInNAND, 1, __LINE__); -- return YAFFS_OK; -- } -- -- tn = yaffs_AddOrFindLevel0Tnode(dev, -- &in->variant.fileVariant, -- chunkInInode, -- NULL); -- if (!tn) -- return YAFFS_FAIL; -- -- existingChunk = yaffs_GetChunkGroupBase(dev, tn, chunkInInode); -- -- if (inScan != 0) { -- /* If we're scanning then we need to test for duplicates -- * NB This does not need to be efficient since it should only ever -- * happen when the power fails during a write, then only one -- * chunk should ever be affected. -- * -- * Correction for YAFFS2: This could happen quite a lot and we need to think about efficiency! TODO -- * Update: For backward scanning we don't need to re-read tags so this is quite cheap. -- */ -- -- if (existingChunk > 0) { -- /* NB Right now existing chunk will not be real chunkId if the device >= 32MB -- * thus we have to do a FindChunkInFile to get the real chunk id. -- * -- * We have a duplicate now we need to decide which one to use: -- * -- * Backwards scanning YAFFS2: The old one is what we use, dump the new one. -- * Forward scanning YAFFS2: The new one is what we use, dump the old one. -- * YAFFS1: Get both sets of tags and compare serial numbers. -- */ -- -- if (inScan > 0) { -- /* Only do this for forward scanning */ -- yaffs_ReadChunkWithTagsFromNAND(dev, -- chunkInNAND, -- NULL, &newTags); -- -- /* Do a proper find */ -- existingChunk = -- yaffs_FindChunkInFile(in, chunkInInode, -- &existingTags); -- } -- -- if (existingChunk <= 0) { -- /*Hoosterman - how did this happen? */ -- -- T(YAFFS_TRACE_ERROR, -- (TSTR -- ("yaffs tragedy: existing chunk < 0 in scan" -- TENDSTR))); -- -- } -- -- /* NB The deleted flags should be false, otherwise the chunks will -- * not be loaded during a scan -- */ -- -- if (inScan > 0) { -- newSerial = newTags.serialNumber; -- existingSerial = existingTags.serialNumber; -- } -- -- if ((inScan > 0) && -- (in->myDev->isYaffs2 || -- existingChunk <= 0 || -- ((existingSerial + 1) & 3) == newSerial)) { -- /* Forward scanning. -- * Use new -- * Delete the old one and drop through to update the tnode -- */ -- yaffs_DeleteChunk(dev, existingChunk, 1, -- __LINE__); -- } else { -- /* Backward scanning or we want to use the existing one -- * Use existing. -- * Delete the new one and return early so that the tnode isn't changed -- */ -- yaffs_DeleteChunk(dev, chunkInNAND, 1, -- __LINE__); -- return YAFFS_OK; -- } -- } -- -- } -- -- if (existingChunk == 0) -- in->nDataChunks++; -- -- yaffs_PutLevel0Tnode(dev, tn, chunkInInode, chunkInNAND); -- -- return YAFFS_OK; --} -- --static int yaffs_ReadChunkDataFromObject(yaffs_Object *in, int chunkInInode, -- __u8 *buffer) --{ -- int chunkInNAND = yaffs_FindChunkInFile(in, chunkInInode, NULL); -- -- if (chunkInNAND >= 0) -- return yaffs_ReadChunkWithTagsFromNAND(in->myDev, chunkInNAND, -- buffer, NULL); -- else { -- T(YAFFS_TRACE_NANDACCESS, -- (TSTR("Chunk %d not found zero instead" TENDSTR), -- chunkInNAND)); -- /* get sane (zero) data if you read a hole */ -- memset(buffer, 0, in->myDev->nDataBytesPerChunk); -- return 0; -- } -- --} -- --void yaffs_DeleteChunk(yaffs_Device *dev, int chunkId, int markNAND, int lyn) --{ -- int block; -- int page; -- yaffs_ExtendedTags tags; -- yaffs_BlockInfo *bi; -- -- if (chunkId <= 0) -- return; -- -- dev->nDeletions++; -- block = chunkId / dev->nChunksPerBlock; -- page = chunkId % dev->nChunksPerBlock; -- -- -- if (!yaffs_CheckChunkBit(dev, block, page)) -- T(YAFFS_TRACE_VERIFY, -- (TSTR("Deleting invalid chunk %d"TENDSTR), -- chunkId)); -- -- bi = yaffs_GetBlockInfo(dev, block); -- -- T(YAFFS_TRACE_DELETION, -- (TSTR("line %d delete of chunk %d" TENDSTR), lyn, chunkId)); -- -- if (markNAND && -- bi->blockState != YAFFS_BLOCK_STATE_COLLECTING && !dev->isYaffs2) { -- -- yaffs_InitialiseTags(&tags); -- -- tags.chunkDeleted = 1; -- -- yaffs_WriteChunkWithTagsToNAND(dev, chunkId, NULL, &tags); -- yaffs_HandleUpdateChunk(dev, chunkId, &tags); -- } else { -- dev->nUnmarkedDeletions++; -- } -- -- /* Pull out of the management area. -- * If the whole block became dirty, this will kick off an erasure. -- */ -- if (bi->blockState == YAFFS_BLOCK_STATE_ALLOCATING || -- bi->blockState == YAFFS_BLOCK_STATE_FULL || -- bi->blockState == YAFFS_BLOCK_STATE_NEEDS_SCANNING || -- bi->blockState == YAFFS_BLOCK_STATE_COLLECTING) { -- dev->nFreeChunks++; -- -- yaffs_ClearChunkBit(dev, block, page); -- -- bi->pagesInUse--; -- -- if (bi->pagesInUse == 0 && -- !bi->hasShrinkHeader && -- bi->blockState != YAFFS_BLOCK_STATE_ALLOCATING && -- bi->blockState != YAFFS_BLOCK_STATE_NEEDS_SCANNING) { -- yaffs_BlockBecameDirty(dev, block); -- } -- -- } -- --} -- --static int yaffs_WriteChunkDataToObject(yaffs_Object *in, int chunkInInode, -- const __u8 *buffer, int nBytes, -- int useReserve) --{ -- /* Find old chunk Need to do this to get serial number -- * Write new one and patch into tree. -- * Invalidate old tags. -- */ -- -- int prevChunkId; -- yaffs_ExtendedTags prevTags; -- -- int newChunkId; -- yaffs_ExtendedTags newTags; -- -- yaffs_Device *dev = in->myDev; -- -- yaffs_CheckGarbageCollection(dev); -- -- /* Get the previous chunk at this location in the file if it exists */ -- prevChunkId = yaffs_FindChunkInFile(in, chunkInInode, &prevTags); -- -- /* Set up new tags */ -- yaffs_InitialiseTags(&newTags); -- -- newTags.chunkId = chunkInInode; -- newTags.objectId = in->objectId; -- newTags.serialNumber = -- (prevChunkId >= 0) ? prevTags.serialNumber + 1 : 1; -- newTags.byteCount = nBytes; -- -- if (nBytes < 1 || nBytes > dev->totalBytesPerChunk) { -- T(YAFFS_TRACE_ERROR, -- (TSTR("Writing %d bytes to chunk!!!!!!!!!" TENDSTR), nBytes)); -- YBUG(); -- } -- -- newChunkId = -- yaffs_WriteNewChunkWithTagsToNAND(dev, buffer, &newTags, -- useReserve); -- -- if (newChunkId >= 0) { -- yaffs_PutChunkIntoFile(in, chunkInInode, newChunkId, 0); -- -- if (prevChunkId >= 0) -- yaffs_DeleteChunk(dev, prevChunkId, 1, __LINE__); -- -- yaffs_CheckFileSanity(in); -- } -- return newChunkId; -- --} -- --/* UpdateObjectHeader updates the header on NAND for an object. -- * If name is not NULL, then that new name is used. -- */ --int yaffs_UpdateObjectHeader(yaffs_Object *in, const YCHAR *name, int force, -- int isShrink, int shadows) --{ -- -- yaffs_BlockInfo *bi; -- -- yaffs_Device *dev = in->myDev; -- -- int prevChunkId; -- int retVal = 0; -- int result = 0; -- -- int newChunkId; -- yaffs_ExtendedTags newTags; -- yaffs_ExtendedTags oldTags; -- -- __u8 *buffer = NULL; -- YCHAR oldName[YAFFS_MAX_NAME_LENGTH + 1]; -- -- yaffs_ObjectHeader *oh = NULL; -+ yaffs_obj_t *in; -+ YCHAR *str = NULL; - -- yaffs_strcpy(oldName, _Y("silly old name")); -+ yaffs_dev_t *dev = parent->my_dev; - -+ /* Check if the entry exists. If it does then fail the call since we don't want a dup.*/ -+ if (yaffs_find_by_name(parent, name)) -+ return NULL; - -- if (!in->fake || -- in == dev->rootDir || /* The rootDir should also be saved */ -- force) { -+ if (type == YAFFS_OBJECT_TYPE_SYMLINK) { -+ str = yaffs_clone_str(aliasString); -+ if (!str) -+ return NULL; -+ } - -- yaffs_CheckGarbageCollection(dev); -- yaffs_CheckObjectDetailsLoaded(in); -+ in = yaffs_new_obj(dev, -1, type); - -- buffer = yaffs_GetTempBuffer(in->myDev, __LINE__); -- oh = (yaffs_ObjectHeader *) buffer; -+ if (!in){ -+ if(str) -+ YFREE(str); -+ return NULL; -+ } - -- prevChunkId = in->hdrChunk; - -- if (prevChunkId > 0) { -- result = yaffs_ReadChunkWithTagsFromNAND(dev, prevChunkId, -- buffer, &oldTags); - -- yaffs_VerifyObjectHeader(in, oh, &oldTags, 0); - -- memcpy(oldName, oh->name, sizeof(oh->name)); -- } - -- memset(buffer, 0xFF, dev->nDataBytesPerChunk); -+ if (in) { -+ in->hdr_chunk = 0; -+ in->valid = 1; -+ in->variant_type = type; - -- oh->type = in->variantType; -- oh->yst_mode = in->yst_mode; -- oh->shadowsObject = oh->inbandShadowsObject = shadows; -+ in->yst_mode = mode; - - #ifdef CONFIG_YAFFS_WINCE -- oh->win_atime[0] = in->win_atime[0]; -- oh->win_ctime[0] = in->win_ctime[0]; -- oh->win_mtime[0] = in->win_mtime[0]; -- oh->win_atime[1] = in->win_atime[1]; -- oh->win_ctime[1] = in->win_ctime[1]; -- oh->win_mtime[1] = in->win_mtime[1]; -+ yfsd_win_file_time_now(in->win_atime); -+ in->win_ctime[0] = in->win_mtime[0] = in->win_atime[0]; -+ in->win_ctime[1] = in->win_mtime[1] = in->win_atime[1]; -+ - #else -- oh->yst_uid = in->yst_uid; -- oh->yst_gid = in->yst_gid; -- oh->yst_atime = in->yst_atime; -- oh->yst_mtime = in->yst_mtime; -- oh->yst_ctime = in->yst_ctime; -- oh->yst_rdev = in->yst_rdev; -+ in->yst_atime = in->yst_mtime = in->yst_ctime = Y_CURRENT_TIME; -+ -+ in->yst_rdev = rdev; -+ in->yst_uid = uid; -+ in->yst_gid = gid; - #endif -- if (in->parent) -- oh->parentObjectId = in->parent->objectId; -- else -- oh->parentObjectId = 0; -+ in->n_data_chunks = 0; - -- if (name && *name) { -- memset(oh->name, 0, sizeof(oh->name)); -- yaffs_strncpy(oh->name, name, YAFFS_MAX_NAME_LENGTH); -- } else if (prevChunkId >= 0) -- memcpy(oh->name, oldName, sizeof(oh->name)); -- else -- memset(oh->name, 0, sizeof(oh->name)); -+ yaffs_set_obj_name(in, name); -+ in->dirty = 1; - -- oh->isShrink = isShrink; -+ yaffs_add_obj_to_dir(parent, in); - -- switch (in->variantType) { -- case YAFFS_OBJECT_TYPE_UNKNOWN: -- /* Should not happen */ -- break; -- case YAFFS_OBJECT_TYPE_FILE: -- oh->fileSize = -- (oh->parentObjectId == YAFFS_OBJECTID_DELETED -- || oh->parentObjectId == -- YAFFS_OBJECTID_UNLINKED) ? 0 : in->variant. -- fileVariant.fileSize; -+ in->my_dev = parent->my_dev; -+ -+ switch (type) { -+ case YAFFS_OBJECT_TYPE_SYMLINK: -+ in->variant.symlink_variant.alias = str; - break; - case YAFFS_OBJECT_TYPE_HARDLINK: -- oh->equivalentObjectId = -- in->variant.hardLinkVariant.equivalentObjectId; -- break; -- case YAFFS_OBJECT_TYPE_SPECIAL: -- /* Do nothing */ -+ in->variant.hardlink_variant.equiv_obj = -+ equiv_obj; -+ in->variant.hardlink_variant.equiv_id = -+ equiv_obj->obj_id; -+ ylist_add(&in->hard_links, &equiv_obj->hard_links); - break; -+ case YAFFS_OBJECT_TYPE_FILE: - case YAFFS_OBJECT_TYPE_DIRECTORY: -- /* Do nothing */ -- break; -- case YAFFS_OBJECT_TYPE_SYMLINK: -- yaffs_strncpy(oh->alias, -- in->variant.symLinkVariant.alias, -- YAFFS_MAX_ALIAS_LENGTH); -- oh->alias[YAFFS_MAX_ALIAS_LENGTH] = 0; -+ case YAFFS_OBJECT_TYPE_SPECIAL: -+ case YAFFS_OBJECT_TYPE_UNKNOWN: -+ /* do nothing */ - break; - } - -- /* Tags */ -- yaffs_InitialiseTags(&newTags); -- in->serial++; -- newTags.chunkId = 0; -- newTags.objectId = in->objectId; -- newTags.serialNumber = in->serial; -- -- /* Add extra info for file header */ -- -- newTags.extraHeaderInfoAvailable = 1; -- newTags.extraParentObjectId = oh->parentObjectId; -- newTags.extraFileLength = oh->fileSize; -- newTags.extraIsShrinkHeader = oh->isShrink; -- newTags.extraEquivalentObjectId = oh->equivalentObjectId; -- newTags.extraShadows = (oh->shadowsObject > 0) ? 1 : 0; -- newTags.extraObjectType = in->variantType; -- -- yaffs_VerifyObjectHeader(in, oh, &newTags, 1); -- -- /* Create new chunk in NAND */ -- newChunkId = -- yaffs_WriteNewChunkWithTagsToNAND(dev, buffer, &newTags, -- (prevChunkId >= 0) ? 1 : 0); -- -- if (newChunkId >= 0) { -- -- in->hdrChunk = newChunkId; -- -- if (prevChunkId >= 0) { -- yaffs_DeleteChunk(dev, prevChunkId, 1, -- __LINE__); -- } -- -- if (!yaffs_ObjectHasCachedWriteData(in)) -- in->dirty = 0; -- -- /* If this was a shrink, then mark the block that the chunk lives on */ -- if (isShrink) { -- bi = yaffs_GetBlockInfo(in->myDev, -- newChunkId / in->myDev->nChunksPerBlock); -- bi->hasShrinkHeader = 1; -- } -- -+ if (yaffs_update_oh(in, name, 0, 0, 0, NULL) < 0) { -+ /* Could not create the object header, fail the creation */ -+ yaffs_del_obj(in); -+ in = NULL; - } - -- retVal = newChunkId; -- -+ yaffs_update_parent(parent); - } - -- if (buffer) -- yaffs_ReleaseTempBuffer(dev, buffer, __LINE__); -- -- return retVal; -+ return in; - } - --/*------------------------ Short Operations Cache ---------------------------------------- -- * In many situations where there is no high level buffering (eg WinCE) a lot of -- * reads might be short sequential reads, and a lot of writes may be short -- * sequential writes. eg. scanning/writing a jpeg file. -- * In these cases, a short read/write cache can provide a huge perfomance benefit -- * with dumb-as-a-rock code. -- * In Linux, the page cache provides read buffering aand the short op cache provides write -- * buffering. -- * -- * There are a limited number (~10) of cache chunks per device so that we don't -- * need a very intelligent search. -- */ -- --static int yaffs_ObjectHasCachedWriteData(yaffs_Object *obj) -+yaffs_obj_t *yaffs_create_file(yaffs_obj_t *parent, const YCHAR *name, -+ __u32 mode, __u32 uid, __u32 gid) - { -- yaffs_Device *dev = obj->myDev; -- int i; -- yaffs_ChunkCache *cache; -- int nCaches = obj->myDev->nShortOpCaches; -- -- for (i = 0; i < nCaches; i++) { -- cache = &dev->srCache[i]; -- if (cache->object == obj && -- cache->dirty) -- return 1; -- } -+ return yaffs_create_obj(YAFFS_OBJECT_TYPE_FILE, parent, name, mode, -+ uid, gid, NULL, NULL, 0); -+} - -- return 0; -+yaffs_obj_t *yaffs_create_dir(yaffs_obj_t *parent, const YCHAR *name, -+ __u32 mode, __u32 uid, __u32 gid) -+{ -+ return yaffs_create_obj(YAFFS_OBJECT_TYPE_DIRECTORY, parent, name, -+ mode, uid, gid, NULL, NULL, 0); - } - -+yaffs_obj_t *yaffs_create_special(yaffs_obj_t *parent, const YCHAR *name, -+ __u32 mode, __u32 uid, __u32 gid, __u32 rdev) -+{ -+ return yaffs_create_obj(YAFFS_OBJECT_TYPE_SPECIAL, parent, name, mode, -+ uid, gid, NULL, NULL, rdev); -+} - --static void yaffs_FlushFilesChunkCache(yaffs_Object *obj) -+yaffs_obj_t *yaffs_create_symlink(yaffs_obj_t *parent, const YCHAR *name, -+ __u32 mode, __u32 uid, __u32 gid, -+ const YCHAR *alias) - { -- yaffs_Device *dev = obj->myDev; -- int lowest = -99; /* Stop compiler whining. */ -- int i; -- yaffs_ChunkCache *cache; -- int chunkWritten = 0; -- int nCaches = obj->myDev->nShortOpCaches; -+ return yaffs_create_obj(YAFFS_OBJECT_TYPE_SYMLINK, parent, name, mode, -+ uid, gid, NULL, alias, 0); -+} - -- if (nCaches > 0) { -- do { -- cache = NULL; -+/* yaffs_link_obj returns the object id of the equivalent object.*/ -+yaffs_obj_t *yaffs_link_obj(yaffs_obj_t *parent, const YCHAR *name, -+ yaffs_obj_t *equiv_obj) -+{ -+ /* Get the real object in case we were fed a hard link as an equivalent object */ -+ equiv_obj = yaffs_get_equivalent_obj(equiv_obj); - -- /* Find the dirty cache for this object with the lowest chunk id. */ -- for (i = 0; i < nCaches; i++) { -- if (dev->srCache[i].object == obj && -- dev->srCache[i].dirty) { -- if (!cache -- || dev->srCache[i].chunkId < -- lowest) { -- cache = &dev->srCache[i]; -- lowest = cache->chunkId; -- } -- } -- } -+ if (yaffs_create_obj -+ (YAFFS_OBJECT_TYPE_HARDLINK, parent, name, 0, 0, 0, -+ equiv_obj, NULL, 0)) { -+ return equiv_obj; -+ } else { -+ return NULL; -+ } - -- if (cache && !cache->locked) { -- /* Write it out and free it up */ -+} - -- chunkWritten = -- yaffs_WriteChunkDataToObject(cache->object, -- cache->chunkId, -- cache->data, -- cache->nBytes, -- 1); -- cache->dirty = 0; -- cache->object = NULL; -- } -+static int yaffs_change_obj_name(yaffs_obj_t *obj, yaffs_obj_t *new_dir, -+ const YCHAR *new_name, int force, int shadows) -+{ -+ int unlinkOp; -+ int deleteOp; - -- } while (cache && chunkWritten > 0); -+ yaffs_obj_t *existingTarget; - -- if (cache) { -- /* Hoosterman, disk full while writing cache out. */ -- T(YAFFS_TRACE_ERROR, -- (TSTR("yaffs tragedy: no space during cache write" TENDSTR))); -+ if (new_dir == NULL) -+ new_dir = obj->parent; /* use the old directory */ - -- } -+ if (new_dir->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) { -+ T(YAFFS_TRACE_ALWAYS, -+ (TSTR -+ ("tragedy: yaffs_change_obj_name: new_dir is not a directory" -+ TENDSTR))); -+ YBUG(); - } - --} -+ /* TODO: Do we need this different handling for YAFFS2 and YAFFS1?? */ -+ if (obj->my_dev->param.is_yaffs2) -+ unlinkOp = (new_dir == obj->my_dev->unlinked_dir); -+ else -+ unlinkOp = (new_dir == obj->my_dev->unlinked_dir -+ && obj->variant_type == YAFFS_OBJECT_TYPE_FILE); - --/*yaffs_FlushEntireDeviceCache(dev) -- * -- * -- */ -+ deleteOp = (new_dir == obj->my_dev->del_dir); - --void yaffs_FlushEntireDeviceCache(yaffs_Device *dev) --{ -- yaffs_Object *obj; -- int nCaches = dev->nShortOpCaches; -- int i; -+ existingTarget = yaffs_find_by_name(new_dir, new_name); - -- /* Find a dirty object in the cache and flush it... -- * until there are no further dirty objects. -+ /* If the object is a file going into the unlinked directory, -+ * then it is OK to just stuff it in since duplicate names are allowed. -+ * else only proceed if the new name does not exist and if we're putting -+ * it into a directory. - */ -- do { -- obj = NULL; -- for (i = 0; i < nCaches && !obj; i++) { -- if (dev->srCache[i].object && -- dev->srCache[i].dirty) -- obj = dev->srCache[i].object; -- -- } -- if (obj) -- yaffs_FlushFilesChunkCache(obj); -- -- } while (obj); -- --} -+ if ((unlinkOp || -+ deleteOp || -+ force || -+ (shadows > 0) || -+ !existingTarget) && -+ new_dir->variant_type == YAFFS_OBJECT_TYPE_DIRECTORY) { -+ yaffs_set_obj_name(obj, new_name); -+ obj->dirty = 1; - -+ yaffs_add_obj_to_dir(new_dir, obj); - --/* Grab us a cache chunk for use. -- * First look for an empty one. -- * Then look for the least recently used non-dirty one. -- * Then look for the least recently used dirty one...., flush and look again. -- */ --static yaffs_ChunkCache *yaffs_GrabChunkCacheWorker(yaffs_Device *dev) --{ -- int i; -+ if (unlinkOp) -+ obj->unlinked = 1; - -- if (dev->nShortOpCaches > 0) { -- for (i = 0; i < dev->nShortOpCaches; i++) { -- if (!dev->srCache[i].object) -- return &dev->srCache[i]; -- } -+ /* If it is a deletion then we mark it as a shrink for gc purposes. */ -+ if (yaffs_update_oh(obj, new_name, 0, deleteOp, shadows, NULL) >= 0) -+ return YAFFS_OK; - } - -- return NULL; -+ return YAFFS_FAIL; - } - --static yaffs_ChunkCache *yaffs_GrabChunkCache(yaffs_Device *dev) -+int yaffs_rename_obj(yaffs_obj_t *old_dir, const YCHAR *old_name, -+ yaffs_obj_t *new_dir, const YCHAR *new_name) - { -- yaffs_ChunkCache *cache; -- yaffs_Object *theObj; -- int usage; -- int i; -- int pushout; -- -- if (dev->nShortOpCaches > 0) { -- /* Try find a non-dirty one... */ -- -- cache = yaffs_GrabChunkCacheWorker(dev); -+ yaffs_obj_t *obj = NULL; -+ yaffs_obj_t *existingTarget = NULL; -+ int force = 0; -+ int result; -+ yaffs_dev_t *dev; - -- if (!cache) { -- /* They were all dirty, find the last recently used object and flush -- * its cache, then find again. -- * NB what's here is not very accurate, we actually flush the object -- * the last recently used page. -- */ - -- /* With locking we can't assume we can use entry zero */ -+ if (!old_dir || old_dir->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) -+ YBUG(); -+ if (!new_dir || new_dir->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) -+ YBUG(); - -- theObj = NULL; -- usage = -1; -- cache = NULL; -- pushout = -1; -+ dev = old_dir->my_dev; - -- for (i = 0; i < dev->nShortOpCaches; i++) { -- if (dev->srCache[i].object && -- !dev->srCache[i].locked && -- (dev->srCache[i].lastUse < usage || !cache)) { -- usage = dev->srCache[i].lastUse; -- theObj = dev->srCache[i].object; -- cache = &dev->srCache[i]; -- pushout = i; -- } -- } -+#ifdef CONFIG_YAFFS_CASE_INSENSITIVE -+ /* Special case for case insemsitive systems (eg. WinCE). -+ * While look-up is case insensitive, the name isn't. -+ * Therefore we might want to change x.txt to X.txt -+ */ -+ if (old_dir == new_dir && yaffs_strcmp(old_name, new_name) == 0) -+ force = 1; -+#endif - -- if (!cache || cache->dirty) { -- /* Flush and try again */ -- yaffs_FlushFilesChunkCache(theObj); -- cache = yaffs_GrabChunkCacheWorker(dev); -- } -+ if(yaffs_strnlen(new_name,YAFFS_MAX_NAME_LENGTH+1) > YAFFS_MAX_NAME_LENGTH) -+ /* ENAMETOOLONG */ -+ return YAFFS_FAIL; - -- } -- return cache; -- } else -- return NULL; -+ obj = yaffs_find_by_name(old_dir, old_name); - --} -+ if (obj && obj->rename_allowed) { - --/* Find a cached chunk */ --static yaffs_ChunkCache *yaffs_FindChunkCache(const yaffs_Object *obj, -- int chunkId) --{ -- yaffs_Device *dev = obj->myDev; -- int i; -- if (dev->nShortOpCaches > 0) { -- for (i = 0; i < dev->nShortOpCaches; i++) { -- if (dev->srCache[i].object == obj && -- dev->srCache[i].chunkId == chunkId) { -- dev->cacheHits++; -+ /* Now do the handling for an existing target, if there is one */ - -- return &dev->srCache[i]; -- } -+ existingTarget = yaffs_find_by_name(new_dir, new_name); -+ if (existingTarget && -+ existingTarget->variant_type == YAFFS_OBJECT_TYPE_DIRECTORY && -+ !ylist_empty(&existingTarget->variant.dir_variant.children)) { -+ /* There is a target that is a non-empty directory, so we fail */ -+ return YAFFS_FAIL; /* EEXIST or ENOTEMPTY */ -+ } else if (existingTarget && existingTarget != obj) { -+ /* Nuke the target first, using shadowing, -+ * but only if it isn't the same object. -+ * -+ * Note we must disable gc otherwise it can mess up the shadowing. -+ * -+ */ -+ dev->gc_disable=1; -+ yaffs_change_obj_name(obj, new_dir, new_name, force, -+ existingTarget->obj_id); -+ existingTarget->is_shadowed = 1; -+ yaffs_unlink_obj(existingTarget); -+ dev->gc_disable=0; - } -+ -+ result = yaffs_change_obj_name(obj, new_dir, new_name, 1, 0); -+ -+ yaffs_update_parent(old_dir); -+ if(new_dir != old_dir) -+ yaffs_update_parent(new_dir); -+ -+ return result; - } -- return NULL; -+ return YAFFS_FAIL; - } - --/* Mark the chunk for the least recently used algorithym */ --static void yaffs_UseChunkCache(yaffs_Device *dev, yaffs_ChunkCache *cache, -- int isAWrite) -+/*------------------------- Block Management and Page Allocation ----------------*/ -+ -+static int yaffs_init_blocks(yaffs_dev_t *dev) - { -+ int nBlocks = dev->internal_end_block - dev->internal_start_block + 1; - -- if (dev->nShortOpCaches > 0) { -- if (dev->srLastUse < 0 || dev->srLastUse > 100000000) { -- /* Reset the cache usages */ -- int i; -- for (i = 1; i < dev->nShortOpCaches; i++) -- dev->srCache[i].lastUse = 0; -+ dev->block_info = NULL; -+ dev->chunk_bits = NULL; - -- dev->srLastUse = 0; -- } -+ dev->alloc_block = -1; /* force it to get a new one */ - -- dev->srLastUse++; -+ /* If the first allocation strategy fails, thry the alternate one */ -+ dev->block_info = YMALLOC(nBlocks * sizeof(yaffs_block_info_t)); -+ if (!dev->block_info) { -+ dev->block_info = YMALLOC_ALT(nBlocks * sizeof(yaffs_block_info_t)); -+ dev->block_info_alt = 1; -+ } else -+ dev->block_info_alt = 0; - -- cache->lastUse = dev->srLastUse; -+ if (dev->block_info) { -+ /* Set up dynamic blockinfo stuff. */ -+ dev->chunk_bit_stride = (dev->param.chunks_per_block + 7) / 8; /* round up bytes */ -+ dev->chunk_bits = YMALLOC(dev->chunk_bit_stride * nBlocks); -+ if (!dev->chunk_bits) { -+ dev->chunk_bits = YMALLOC_ALT(dev->chunk_bit_stride * nBlocks); -+ dev->chunk_bits_alt = 1; -+ } else -+ dev->chunk_bits_alt = 0; -+ } - -- if (isAWrite) -- cache->dirty = 1; -+ if (dev->block_info && dev->chunk_bits) { -+ memset(dev->block_info, 0, nBlocks * sizeof(yaffs_block_info_t)); -+ memset(dev->chunk_bits, 0, dev->chunk_bit_stride * nBlocks); -+ return YAFFS_OK; - } -+ -+ return YAFFS_FAIL; - } - --/* Invalidate a single cache page. -- * Do this when a whole page gets written, -- * ie the short cache for this page is no longer valid. -- */ --static void yaffs_InvalidateChunkCache(yaffs_Object *object, int chunkId) -+static void yaffs_deinit_blocks(yaffs_dev_t *dev) - { -- if (object->myDev->nShortOpCaches > 0) { -- yaffs_ChunkCache *cache = yaffs_FindChunkCache(object, chunkId); -+ if (dev->block_info_alt && dev->block_info) -+ YFREE_ALT(dev->block_info); -+ else if (dev->block_info) -+ YFREE(dev->block_info); - -- if (cache) -- cache->object = NULL; -- } --} -+ dev->block_info_alt = 0; - --/* Invalidate all the cache pages associated with this object -- * Do this whenever ther file is deleted or resized. -- */ --static void yaffs_InvalidateWholeChunkCache(yaffs_Object *in) --{ -- int i; -- yaffs_Device *dev = in->myDev; -+ dev->block_info = NULL; - -- if (dev->nShortOpCaches > 0) { -- /* Invalidate it. */ -- for (i = 0; i < dev->nShortOpCaches; i++) { -- if (dev->srCache[i].object == in) -- dev->srCache[i].object = NULL; -- } -- } -+ if (dev->chunk_bits_alt && dev->chunk_bits) -+ YFREE_ALT(dev->chunk_bits); -+ else if (dev->chunk_bits) -+ YFREE(dev->chunk_bits); -+ dev->chunk_bits_alt = 0; -+ dev->chunk_bits = NULL; - } - --/*--------------------- Checkpointing --------------------*/ -+void yaffs_block_became_dirty(yaffs_dev_t *dev, int block_no) -+{ -+ yaffs_block_info_t *bi = yaffs_get_block_info(dev, block_no); - -+ int erasedOk = 0; - --static int yaffs_WriteCheckpointValidityMarker(yaffs_Device *dev, int head) --{ -- yaffs_CheckpointValidity cp; -+ /* If the block is still healthy erase it and mark as clean. -+ * If the block has had a data failure, then retire it. -+ */ - -- memset(&cp, 0, sizeof(cp)); -+ T(YAFFS_TRACE_GC | YAFFS_TRACE_ERASE, -+ (TSTR("yaffs_block_became_dirty block %d state %d %s"TENDSTR), -+ block_no, bi->block_state, (bi->needs_retiring) ? "needs retiring" : "")); - -- cp.structType = sizeof(cp); -- cp.magic = YAFFS_MAGIC; -- cp.version = YAFFS_CHECKPOINT_VERSION; -- cp.head = (head) ? 1 : 0; -+ yaffs2_clear_oldest_dirty_seq(dev,bi); - -- return (yaffs_CheckpointWrite(dev, &cp, sizeof(cp)) == sizeof(cp)) ? -- 1 : 0; --} -+ bi->block_state = YAFFS_BLOCK_STATE_DIRTY; - --static int yaffs_ReadCheckpointValidityMarker(yaffs_Device *dev, int head) --{ -- yaffs_CheckpointValidity cp; -- int ok; -+ /* If this is the block being garbage collected then stop gc'ing this block */ -+ if(block_no == dev->gc_block) -+ dev->gc_block = 0; - -- ok = (yaffs_CheckpointRead(dev, &cp, sizeof(cp)) == sizeof(cp)); -+ /* If this block is currently the best candidate for gc then drop as a candidate */ -+ if(block_no == dev->gc_dirtiest){ -+ dev->gc_dirtiest = 0; -+ dev->gc_pages_in_use = 0; -+ } - -- if (ok) -- ok = (cp.structType == sizeof(cp)) && -- (cp.magic == YAFFS_MAGIC) && -- (cp.version == YAFFS_CHECKPOINT_VERSION) && -- (cp.head == ((head) ? 1 : 0)); -- return ok ? 1 : 0; --} -+ if (!bi->needs_retiring) { -+ yaffs2_checkpt_invalidate(dev); -+ erasedOk = yaffs_erase_block(dev, block_no); -+ if (!erasedOk) { -+ dev->n_erase_failures++; -+ T(YAFFS_TRACE_ERROR | YAFFS_TRACE_BAD_BLOCKS, -+ (TSTR("**>> Erasure failed %d" TENDSTR), block_no)); -+ } -+ } - --static void yaffs_DeviceToCheckpointDevice(yaffs_CheckpointDevice *cp, -- yaffs_Device *dev) --{ -- cp->nErasedBlocks = dev->nErasedBlocks; -- cp->allocationBlock = dev->allocationBlock; -- cp->allocationPage = dev->allocationPage; -- cp->nFreeChunks = dev->nFreeChunks; -+ if (erasedOk && -+ ((yaffs_trace_mask & YAFFS_TRACE_ERASE) || !yaffs_skip_verification(dev))) { -+ int i; -+ for (i = 0; i < dev->param.chunks_per_block; i++) { -+ if (!yaffs_check_chunk_erased -+ (dev, block_no * dev->param.chunks_per_block + i)) { -+ T(YAFFS_TRACE_ERROR, -+ (TSTR -+ (">>Block %d erasure supposedly OK, but chunk %d not erased" -+ TENDSTR), block_no, i)); -+ } -+ } -+ } -+ -+ if (erasedOk) { -+ /* Clean it up... */ -+ bi->block_state = YAFFS_BLOCK_STATE_EMPTY; -+ bi->seq_number = 0; -+ dev->n_erased_blocks++; -+ bi->pages_in_use = 0; -+ bi->soft_del_pages = 0; -+ bi->has_shrink_hdr = 0; -+ bi->skip_erased_check = 1; /* This is clean, so no need to check */ -+ bi->gc_prioritise = 0; -+ yaffs_clear_chunk_bits(dev, block_no); - -- cp->nDeletedFiles = dev->nDeletedFiles; -- cp->nUnlinkedFiles = dev->nUnlinkedFiles; -- cp->nBackgroundDeletions = dev->nBackgroundDeletions; -- cp->sequenceNumber = dev->sequenceNumber; -- cp->oldestDirtySequence = dev->oldestDirtySequence; -+ T(YAFFS_TRACE_ERASE, -+ (TSTR("Erased block %d" TENDSTR), block_no)); -+ } else { -+ dev->n_free_chunks -= dev->param.chunks_per_block; /* We lost a block of free space */ - -+ yaffs_retire_block(dev, block_no); -+ T(YAFFS_TRACE_ERROR | YAFFS_TRACE_BAD_BLOCKS, -+ (TSTR("**>> Block %d retired" TENDSTR), block_no)); -+ } - } - --static void yaffs_CheckpointDeviceToDevice(yaffs_Device *dev, -- yaffs_CheckpointDevice *cp) -+static int yaffs_find_alloc_block(yaffs_dev_t *dev) - { -- dev->nErasedBlocks = cp->nErasedBlocks; -- dev->allocationBlock = cp->allocationBlock; -- dev->allocationPage = cp->allocationPage; -- dev->nFreeChunks = cp->nFreeChunks; -- -- dev->nDeletedFiles = cp->nDeletedFiles; -- dev->nUnlinkedFiles = cp->nUnlinkedFiles; -- dev->nBackgroundDeletions = cp->nBackgroundDeletions; -- dev->sequenceNumber = cp->sequenceNumber; -- dev->oldestDirtySequence = cp->oldestDirtySequence; --} -+ int i; - -+ yaffs_block_info_t *bi; - --static int yaffs_WriteCheckpointDevice(yaffs_Device *dev) --{ -- yaffs_CheckpointDevice cp; -- __u32 nBytes; -- __u32 nBlocks = (dev->internalEndBlock - dev->internalStartBlock + 1); -+ if (dev->n_erased_blocks < 1) { -+ /* Hoosterman we've got a problem. -+ * Can't get space to gc -+ */ -+ T(YAFFS_TRACE_ERROR, -+ (TSTR("yaffs tragedy: no more erased blocks" TENDSTR))); - -- int ok; -+ return -1; -+ } - -- /* Write device runtime values*/ -- yaffs_DeviceToCheckpointDevice(&cp, dev); -- cp.structType = sizeof(cp); -+ /* Find an empty block. */ - -- ok = (yaffs_CheckpointWrite(dev, &cp, sizeof(cp)) == sizeof(cp)); -+ for (i = dev->internal_start_block; i <= dev->internal_end_block; i++) { -+ dev->alloc_block_finder++; -+ if (dev->alloc_block_finder < dev->internal_start_block -+ || dev->alloc_block_finder > dev->internal_end_block) { -+ dev->alloc_block_finder = dev->internal_start_block; -+ } - -- /* Write block info */ -- if (ok) { -- nBytes = nBlocks * sizeof(yaffs_BlockInfo); -- ok = (yaffs_CheckpointWrite(dev, dev->blockInfo, nBytes) == nBytes); -+ bi = yaffs_get_block_info(dev, dev->alloc_block_finder); -+ -+ if (bi->block_state == YAFFS_BLOCK_STATE_EMPTY) { -+ bi->block_state = YAFFS_BLOCK_STATE_ALLOCATING; -+ dev->seq_number++; -+ bi->seq_number = dev->seq_number; -+ dev->n_erased_blocks--; -+ T(YAFFS_TRACE_ALLOCATE, -+ (TSTR("Allocated block %d, seq %d, %d left" TENDSTR), -+ dev->alloc_block_finder, dev->seq_number, -+ dev->n_erased_blocks)); -+ return dev->alloc_block_finder; -+ } - } - -- /* Write chunk bits */ -- if (ok) { -- nBytes = nBlocks * dev->chunkBitmapStride; -- ok = (yaffs_CheckpointWrite(dev, dev->chunkBits, nBytes) == nBytes); -- } -- return ok ? 1 : 0; -+ T(YAFFS_TRACE_ALWAYS, -+ (TSTR -+ ("yaffs tragedy: no more erased blocks, but there should have been %d" -+ TENDSTR), dev->n_erased_blocks)); - -+ return -1; - } - --static int yaffs_ReadCheckpointDevice(yaffs_Device *dev) -+ -+/* -+ * Check if there's space to allocate... -+ * Thinks.... do we need top make this ths same as yaffs_get_free_chunks()? -+ */ -+int yaffs_check_alloc_available(yaffs_dev_t *dev, int n_chunks) - { -- yaffs_CheckpointDevice cp; -- __u32 nBytes; -- __u32 nBlocks = (dev->internalEndBlock - dev->internalStartBlock + 1); -+ int reservedChunks; -+ int reservedBlocks = dev->param.n_reserved_blocks; -+ int checkpointBlocks; - -- int ok; -+ checkpointBlocks = yaffs_calc_checkpt_blocks_required(dev); - -- ok = (yaffs_CheckpointRead(dev, &cp, sizeof(cp)) == sizeof(cp)); -- if (!ok) -- return 0; -+ reservedChunks = ((reservedBlocks + checkpointBlocks) * dev->param.chunks_per_block); - -- if (cp.structType != sizeof(cp)) -- return 0; -+ return (dev->n_free_chunks > (reservedChunks + n_chunks)); -+} -+ -+static int yaffs_alloc_chunk(yaffs_dev_t *dev, int useReserve, -+ yaffs_block_info_t **blockUsedPtr) -+{ -+ int retVal; -+ yaffs_block_info_t *bi; -+ -+ if (dev->alloc_block < 0) { -+ /* Get next block to allocate off */ -+ dev->alloc_block = yaffs_find_alloc_block(dev); -+ dev->alloc_page = 0; -+ } - -+ if (!useReserve && !yaffs_check_alloc_available(dev, 1)) { -+ /* Not enough space to allocate unless we're allowed to use the reserve. */ -+ return -1; -+ } - -- yaffs_CheckpointDeviceToDevice(dev, &cp); -+ if (dev->n_erased_blocks < dev->param.n_reserved_blocks -+ && dev->alloc_page == 0) { -+ T(YAFFS_TRACE_ALLOCATE, (TSTR("Allocating reserve" TENDSTR))); -+ } - -- nBytes = nBlocks * sizeof(yaffs_BlockInfo); -+ /* Next page please.... */ -+ if (dev->alloc_block >= 0) { -+ bi = yaffs_get_block_info(dev, dev->alloc_block); - -- ok = (yaffs_CheckpointRead(dev, dev->blockInfo, nBytes) == nBytes); -+ retVal = (dev->alloc_block * dev->param.chunks_per_block) + -+ dev->alloc_page; -+ bi->pages_in_use++; -+ yaffs_set_chunk_bit(dev, dev->alloc_block, -+ dev->alloc_page); - -- if (!ok) -- return 0; -- nBytes = nBlocks * dev->chunkBitmapStride; -+ dev->alloc_page++; - -- ok = (yaffs_CheckpointRead(dev, dev->chunkBits, nBytes) == nBytes); -+ dev->n_free_chunks--; - -- return ok ? 1 : 0; --} -+ /* If the block is full set the state to full */ -+ if (dev->alloc_page >= dev->param.chunks_per_block) { -+ bi->block_state = YAFFS_BLOCK_STATE_FULL; -+ dev->alloc_block = -1; -+ } - --static void yaffs_ObjectToCheckpointObject(yaffs_CheckpointObject *cp, -- yaffs_Object *obj) --{ -+ if (blockUsedPtr) -+ *blockUsedPtr = bi; -+ -+ return retVal; -+ } - -- cp->objectId = obj->objectId; -- cp->parentId = (obj->parent) ? obj->parent->objectId : 0; -- cp->hdrChunk = obj->hdrChunk; -- cp->variantType = obj->variantType; -- cp->deleted = obj->deleted; -- cp->softDeleted = obj->softDeleted; -- cp->unlinked = obj->unlinked; -- cp->fake = obj->fake; -- cp->renameAllowed = obj->renameAllowed; -- cp->unlinkAllowed = obj->unlinkAllowed; -- cp->serial = obj->serial; -- cp->nDataChunks = obj->nDataChunks; -+ T(YAFFS_TRACE_ERROR, -+ (TSTR("!!!!!!!!! Allocator out !!!!!!!!!!!!!!!!!" TENDSTR))); - -- if (obj->variantType == YAFFS_OBJECT_TYPE_FILE) -- cp->fileSizeOrEquivalentObjectId = obj->variant.fileVariant.fileSize; -- else if (obj->variantType == YAFFS_OBJECT_TYPE_HARDLINK) -- cp->fileSizeOrEquivalentObjectId = obj->variant.hardLinkVariant.equivalentObjectId; -+ return -1; - } - --static int yaffs_CheckpointObjectToObject(yaffs_Object *obj, yaffs_CheckpointObject *cp) -+static int yaffs_get_erased_chunks(yaffs_dev_t *dev) - { -+ int n; - -- yaffs_Object *parent; -+ n = dev->n_erased_blocks * dev->param.chunks_per_block; - -- if (obj->variantType != cp->variantType) { -- T(YAFFS_TRACE_ERROR, (TSTR("Checkpoint read object %d type %d " -- TCONT("chunk %d does not match existing object type %d") -- TENDSTR), cp->objectId, cp->variantType, cp->hdrChunk, -- obj->variantType)); -- return 0; -- } -+ if (dev->alloc_block > 0) -+ n += (dev->param.chunks_per_block - dev->alloc_page); - -- obj->objectId = cp->objectId; -+ return n; - -- if (cp->parentId) -- parent = yaffs_FindOrCreateObjectByNumber( -- obj->myDev, -- cp->parentId, -- YAFFS_OBJECT_TYPE_DIRECTORY); -- else -- parent = NULL; -+} - -- if (parent) { -- if (parent->variantType != YAFFS_OBJECT_TYPE_DIRECTORY) { -- T(YAFFS_TRACE_ALWAYS, (TSTR("Checkpoint read object %d parent %d type %d" -- TCONT(" chunk %d Parent type, %d, not directory") -- TENDSTR), -- cp->objectId, cp->parentId, cp->variantType, -- cp->hdrChunk, parent->variantType)); -- return 0; -+/* -+ * yaffs_skip_rest_of_block() skips over the rest of the allocation block -+ * if we don't want to write to it. -+ */ -+void yaffs_skip_rest_of_block(yaffs_dev_t *dev) -+{ -+ if(dev->alloc_block > 0){ -+ yaffs_block_info_t *bi = yaffs_get_block_info(dev, dev->alloc_block); -+ if(bi->block_state == YAFFS_BLOCK_STATE_ALLOCATING){ -+ bi->block_state = YAFFS_BLOCK_STATE_FULL; -+ dev->alloc_block = -1; - } -- yaffs_AddObjectToDirectory(parent, obj); - } -- -- obj->hdrChunk = cp->hdrChunk; -- obj->variantType = cp->variantType; -- obj->deleted = cp->deleted; -- obj->softDeleted = cp->softDeleted; -- obj->unlinked = cp->unlinked; -- obj->fake = cp->fake; -- obj->renameAllowed = cp->renameAllowed; -- obj->unlinkAllowed = cp->unlinkAllowed; -- obj->serial = cp->serial; -- obj->nDataChunks = cp->nDataChunks; -- -- if (obj->variantType == YAFFS_OBJECT_TYPE_FILE) -- obj->variant.fileVariant.fileSize = cp->fileSizeOrEquivalentObjectId; -- else if (obj->variantType == YAFFS_OBJECT_TYPE_HARDLINK) -- obj->variant.hardLinkVariant.equivalentObjectId = cp->fileSizeOrEquivalentObjectId; -- -- if (obj->hdrChunk > 0) -- obj->lazyLoaded = 1; -- return 1; - } - - -- --static int yaffs_CheckpointTnodeWorker(yaffs_Object *in, yaffs_Tnode *tn, -- __u32 level, int chunkOffset) -+static int yaffs_gc_block(yaffs_dev_t *dev, int block, -+ int wholeBlock) - { -+ int oldChunk; -+ int newChunk; -+ int mark_flash; -+ int retVal = YAFFS_OK; - int i; -- yaffs_Device *dev = in->myDev; -- int ok = 1; -- int tnodeSize = (dev->tnodeWidth * YAFFS_NTNODES_LEVEL0)/8; -- -- if (tnodeSize < sizeof(yaffs_Tnode)) -- tnodeSize = sizeof(yaffs_Tnode); -+ int isCheckpointBlock; -+ int matchingChunk; -+ int maxCopies; - -+ int chunksBefore = yaffs_get_erased_chunks(dev); -+ int chunksAfter; - -- if (tn) { -- if (level > 0) { -+ yaffs_ext_tags tags; - -- for (i = 0; i < YAFFS_NTNODES_INTERNAL && ok; i++) { -- if (tn->internal[i]) { -- ok = yaffs_CheckpointTnodeWorker(in, -- tn->internal[i], -- level - 1, -- (chunkOffset<<YAFFS_TNODES_INTERNAL_BITS) + i); -- } -- } -- } else if (level == 0) { -- __u32 baseOffset = chunkOffset << YAFFS_TNODES_LEVEL0_BITS; -- ok = (yaffs_CheckpointWrite(dev, &baseOffset, sizeof(baseOffset)) == sizeof(baseOffset)); -- if (ok) -- ok = (yaffs_CheckpointWrite(dev, tn, tnodeSize) == tnodeSize); -- } -- } -+ yaffs_block_info_t *bi = yaffs_get_block_info(dev, block); - -- return ok; -+ yaffs_obj_t *object; - --} -+ isCheckpointBlock = (bi->block_state == YAFFS_BLOCK_STATE_CHECKPOINT); - --static int yaffs_WriteCheckpointTnodes(yaffs_Object *obj) --{ -- __u32 endMarker = ~0; -- int ok = 1; - -- if (obj->variantType == YAFFS_OBJECT_TYPE_FILE) { -- ok = yaffs_CheckpointTnodeWorker(obj, -- obj->variant.fileVariant.top, -- obj->variant.fileVariant.topLevel, -- 0); -- if (ok) -- ok = (yaffs_CheckpointWrite(obj->myDev, &endMarker, sizeof(endMarker)) == -- sizeof(endMarker)); -- } -+ T(YAFFS_TRACE_TRACING, -+ (TSTR("Collecting block %d, in use %d, shrink %d, wholeBlock %d" TENDSTR), -+ block, -+ bi->pages_in_use, -+ bi->has_shrink_hdr, -+ wholeBlock)); - -- return ok ? 1 : 0; --} -+ /*yaffs_verify_free_chunks(dev); */ - --static int yaffs_ReadCheckpointTnodes(yaffs_Object *obj) --{ -- __u32 baseChunk; -- int ok = 1; -- yaffs_Device *dev = obj->myDev; -- yaffs_FileStructure *fileStructPtr = &obj->variant.fileVariant; -- yaffs_Tnode *tn; -- int nread = 0; -- int tnodeSize = (dev->tnodeWidth * YAFFS_NTNODES_LEVEL0)/8; -+ if(bi->block_state == YAFFS_BLOCK_STATE_FULL) -+ bi->block_state = YAFFS_BLOCK_STATE_COLLECTING; -+ -+ bi->has_shrink_hdr = 0; /* clear the flag so that the block can erase */ - -- if (tnodeSize < sizeof(yaffs_Tnode)) -- tnodeSize = sizeof(yaffs_Tnode); -+ dev->gc_disable = 1; - -- ok = (yaffs_CheckpointRead(dev, &baseChunk, sizeof(baseChunk)) == sizeof(baseChunk)); -+ if (isCheckpointBlock || -+ !yaffs_still_some_chunks(dev, block)) { -+ T(YAFFS_TRACE_TRACING, -+ (TSTR -+ ("Collecting block %d that has no chunks in use" TENDSTR), -+ block)); -+ yaffs_block_became_dirty(dev, block); -+ } else { - -- while (ok && (~baseChunk)) { -- nread++; -- /* Read level 0 tnode */ -+ __u8 *buffer = yaffs_get_temp_buffer(dev, __LINE__); - -+ yaffs_verify_blk(dev, bi, block); - -- tn = yaffs_GetTnodeRaw(dev); -- if (tn) -- ok = (yaffs_CheckpointRead(dev, tn, tnodeSize) == tnodeSize); -- else -- ok = 0; -+ maxCopies = (wholeBlock) ? dev->param.chunks_per_block : 5; -+ oldChunk = block * dev->param.chunks_per_block + dev->gc_chunk; - -- if (tn && ok) -- ok = yaffs_AddOrFindLevel0Tnode(dev, -- fileStructPtr, -- baseChunk, -- tn) ? 1 : 0; -+ for (/* init already done */; -+ retVal == YAFFS_OK && -+ dev->gc_chunk < dev->param.chunks_per_block && -+ (bi->block_state == YAFFS_BLOCK_STATE_COLLECTING) && -+ maxCopies > 0; -+ dev->gc_chunk++, oldChunk++) { -+ if (yaffs_check_chunk_bit(dev, block, dev->gc_chunk)) { - -- if (ok) -- ok = (yaffs_CheckpointRead(dev, &baseChunk, sizeof(baseChunk)) == sizeof(baseChunk)); -+ /* This page is in use and might need to be copied off */ - -- } -+ maxCopies--; - -- T(YAFFS_TRACE_CHECKPOINT, ( -- TSTR("Checkpoint read tnodes %d records, last %d. ok %d" TENDSTR), -- nread, baseChunk, ok)); -+ mark_flash = 1; - -- return ok ? 1 : 0; --} -+ yaffs_init_tags(&tags); - -+ yaffs_rd_chunk_tags_nand(dev, oldChunk, -+ buffer, &tags); - --static int yaffs_WriteCheckpointObjects(yaffs_Device *dev) --{ -- yaffs_Object *obj; -- yaffs_CheckpointObject cp; -- int i; -- int ok = 1; -- struct ylist_head *lh; -+ object = -+ yaffs_find_by_number(dev, -+ tags.obj_id); - -+ T(YAFFS_TRACE_GC_DETAIL, -+ (TSTR -+ ("Collecting chunk in block %d, %d %d %d " TENDSTR), -+ dev->gc_chunk, tags.obj_id, tags.chunk_id, -+ tags.n_bytes)); - -- /* Iterate through the objects in each hash entry, -- * dumping them to the checkpointing stream. -- */ -+ if (object && !yaffs_skip_verification(dev)) { -+ if (tags.chunk_id == 0) -+ matchingChunk = object->hdr_chunk; -+ else if (object->soft_del) -+ matchingChunk = oldChunk; /* Defeat the test */ -+ else -+ matchingChunk = yaffs_find_chunk_in_file(object, tags.chunk_id, NULL); - -- for (i = 0; ok && i < YAFFS_NOBJECT_BUCKETS; i++) { -- ylist_for_each(lh, &dev->objectBucket[i].list) { -- if (lh) { -- obj = ylist_entry(lh, yaffs_Object, hashLink); -- if (!obj->deferedFree) { -- yaffs_ObjectToCheckpointObject(&cp, obj); -- cp.structType = sizeof(cp); -- -- T(YAFFS_TRACE_CHECKPOINT, ( -- TSTR("Checkpoint write object %d parent %d type %d chunk %d obj addr %x" TENDSTR), -- cp.objectId, cp.parentId, cp.variantType, cp.hdrChunk, (unsigned) obj)); -+ if (oldChunk != matchingChunk) -+ T(YAFFS_TRACE_ERROR, -+ (TSTR("gc: page in gc mismatch: %d %d %d %d"TENDSTR), -+ oldChunk, matchingChunk, tags.obj_id, tags.chunk_id)); - -- ok = (yaffs_CheckpointWrite(dev, &cp, sizeof(cp)) == sizeof(cp)); -+ } - -- if (ok && obj->variantType == YAFFS_OBJECT_TYPE_FILE) -- ok = yaffs_WriteCheckpointTnodes(obj); -+ if (!object) { -+ T(YAFFS_TRACE_ERROR, -+ (TSTR -+ ("page %d in gc has no object: %d %d %d " -+ TENDSTR), oldChunk, -+ tags.obj_id, tags.chunk_id, tags.n_bytes)); - } -- } -- } -- } - -- /* Dump end of list */ -- memset(&cp, 0xFF, sizeof(yaffs_CheckpointObject)); -- cp.structType = sizeof(cp); -+ if (object && -+ object->deleted && -+ object->soft_del && -+ tags.chunk_id != 0) { -+ /* Data chunk in a soft deleted file, throw it away -+ * It's a soft deleted data chunk, -+ * No need to copy this, just forget about it and -+ * fix up the object. -+ */ -+ -+ /* Free chunks already includes softdeleted chunks. -+ * How ever this chunk is going to soon be really deleted -+ * which will increment free chunks. -+ * We have to decrement free chunks so this works out properly. -+ */ -+ dev->n_free_chunks--; -+ bi->soft_del_pages--; -+ -+ object->n_data_chunks--; - -- if (ok) -- ok = (yaffs_CheckpointWrite(dev, &cp, sizeof(cp)) == sizeof(cp)); -+ if (object->n_data_chunks <= 0) { -+ /* remeber to clean up the object */ -+ dev->gc_cleanup_list[dev->n_clean_ups] = -+ tags.obj_id; -+ dev->n_clean_ups++; -+ } -+ mark_flash = 0; -+ } else if (0) { -+ /* Todo object && object->deleted && object->n_data_chunks == 0 */ -+ /* Deleted object header with no data chunks. -+ * Can be discarded and the file deleted. -+ */ -+ object->hdr_chunk = 0; -+ yaffs_free_tnode(object->my_dev, -+ object->variant. -+ file_variant.top); -+ object->variant.file_variant.top = NULL; -+ yaffs_generic_obj_del(object); - -- return ok ? 1 : 0; --} -+ } else if (object) { -+ /* It's either a data chunk in a live file or -+ * an ObjectHeader, so we're interested in it. -+ * NB Need to keep the ObjectHeaders of deleted files -+ * until the whole file has been deleted off -+ */ -+ tags.serial_number++; - --static int yaffs_ReadCheckpointObjects(yaffs_Device *dev) --{ -- yaffs_Object *obj; -- yaffs_CheckpointObject cp; -- int ok = 1; -- int done = 0; -- yaffs_Object *hardList = NULL; -+ dev->n_gc_copies++; - -- while (ok && !done) { -- ok = (yaffs_CheckpointRead(dev, &cp, sizeof(cp)) == sizeof(cp)); -- if (cp.structType != sizeof(cp)) { -- T(YAFFS_TRACE_CHECKPOINT, (TSTR("struct size %d instead of %d ok %d"TENDSTR), -- cp.structType, sizeof(cp), ok)); -- ok = 0; -- } -- -- T(YAFFS_TRACE_CHECKPOINT, (TSTR("Checkpoint read object %d parent %d type %d chunk %d " TENDSTR), -- cp.objectId, cp.parentId, cp.variantType, cp.hdrChunk)); -- -- if (ok && cp.objectId == ~0) -- done = 1; -- else if (ok) { -- obj = yaffs_FindOrCreateObjectByNumber(dev, cp.objectId, cp.variantType); -- if (obj) { -- ok = yaffs_CheckpointObjectToObject(obj, &cp); -- if (!ok) -- break; -- if (obj->variantType == YAFFS_OBJECT_TYPE_FILE) { -- ok = yaffs_ReadCheckpointTnodes(obj); -- } else if (obj->variantType == YAFFS_OBJECT_TYPE_HARDLINK) { -- obj->hardLinks.next = -- (struct ylist_head *) hardList; -- hardList = obj; -- } -- } else -- ok = 0; -- } -- } -+ if (tags.chunk_id == 0) { -+ /* It is an object Id, -+ * We need to nuke the shrinkheader flags first -+ * Also need to clean up shadowing. -+ * We no longer want the shrinkHeader flag since its work is done -+ * and if it is left in place it will mess up scanning. -+ */ - -- if (ok) -- yaffs_HardlinkFixup(dev, hardList); -+ yaffs_obj_header *oh; -+ oh = (yaffs_obj_header *)buffer; - -- return ok ? 1 : 0; --} -+ oh->is_shrink = 0; -+ tags.extra_is_shrink = 0; - --static int yaffs_WriteCheckpointSum(yaffs_Device *dev) --{ -- __u32 checkpointSum; -- int ok; -+ oh->shadows_obj = 0; -+ oh->inband_shadowed_obj_id = 0; -+ tags.extra_shadows = 0; -+ -+ /* Update file size */ -+ if(object->variant_type == YAFFS_OBJECT_TYPE_FILE){ -+ oh->file_size = object->variant.file_variant.file_size; -+ tags.extra_length = oh->file_size; -+ } -+ -+ yaffs_verify_oh(object, oh, &tags, 1); -+ newChunk = -+ yaffs_write_new_chunk(dev,(__u8 *) oh, &tags, 1); -+ } else -+ newChunk = -+ yaffs_write_new_chunk(dev, buffer, &tags, 1); -+ -+ if (newChunk < 0) { -+ retVal = YAFFS_FAIL; -+ } else { - -- yaffs_GetCheckpointSum(dev, &checkpointSum); -+ /* Ok, now fix up the Tnodes etc. */ - -- ok = (yaffs_CheckpointWrite(dev, &checkpointSum, sizeof(checkpointSum)) == sizeof(checkpointSum)); -+ if (tags.chunk_id == 0) { -+ /* It's a header */ -+ object->hdr_chunk = newChunk; -+ object->serial = tags.serial_number; -+ } else { -+ /* It's a data chunk */ -+ int ok; -+ ok = yaffs_put_chunk_in_file -+ (object, -+ tags.chunk_id, -+ newChunk, 0); -+ } -+ } -+ } - -- if (!ok) -- return 0; -+ if (retVal == YAFFS_OK) -+ yaffs_chunk_del(dev, oldChunk, mark_flash, __LINE__); - -- return 1; --} -+ } -+ } - --static int yaffs_ReadCheckpointSum(yaffs_Device *dev) --{ -- __u32 checkpointSum0; -- __u32 checkpointSum1; -- int ok; -+ yaffs_release_temp_buffer(dev, buffer, __LINE__); - -- yaffs_GetCheckpointSum(dev, &checkpointSum0); - -- ok = (yaffs_CheckpointRead(dev, &checkpointSum1, sizeof(checkpointSum1)) == sizeof(checkpointSum1)); - -- if (!ok) -- return 0; -+ } - -- if (checkpointSum0 != checkpointSum1) -- return 0; -+ yaffs_verify_collected_blk(dev, bi, block); - -- return 1; --} - - --static int yaffs_WriteCheckpointData(yaffs_Device *dev) --{ -- int ok = 1; -+ if (bi->block_state == YAFFS_BLOCK_STATE_COLLECTING) { -+ /* -+ * The gc did not complete. Set block state back to FULL -+ * because checkpointing does not restore gc. -+ */ -+ bi->block_state = YAFFS_BLOCK_STATE_FULL; -+ } else { -+ /* The gc completed. */ -+ /* Do any required cleanups */ -+ for (i = 0; i < dev->n_clean_ups; i++) { -+ /* Time to delete the file too */ -+ object = -+ yaffs_find_by_number(dev, -+ dev->gc_cleanup_list[i]); -+ if (object) { -+ yaffs_free_tnode(dev, -+ object->variant.file_variant. -+ top); -+ object->variant.file_variant.top = NULL; -+ T(YAFFS_TRACE_GC, -+ (TSTR -+ ("yaffs: About to finally delete object %d" -+ TENDSTR), object->obj_id)); -+ yaffs_generic_obj_del(object); -+ object->my_dev->n_deleted_files--; -+ } - -- if (dev->skipCheckpointWrite || !dev->isYaffs2) { -- T(YAFFS_TRACE_CHECKPOINT, (TSTR("skipping checkpoint write" TENDSTR))); -- ok = 0; -- } -+ } - -- if (ok) -- ok = yaffs_CheckpointOpen(dev, 1); - -- if (ok) { -- T(YAFFS_TRACE_CHECKPOINT, (TSTR("write checkpoint validity" TENDSTR))); -- ok = yaffs_WriteCheckpointValidityMarker(dev, 1); -- } -- if (ok) { -- T(YAFFS_TRACE_CHECKPOINT, (TSTR("write checkpoint device" TENDSTR))); -- ok = yaffs_WriteCheckpointDevice(dev); -- } -- if (ok) { -- T(YAFFS_TRACE_CHECKPOINT, (TSTR("write checkpoint objects" TENDSTR))); -- ok = yaffs_WriteCheckpointObjects(dev); -- } -- if (ok) { -- T(YAFFS_TRACE_CHECKPOINT, (TSTR("write checkpoint validity" TENDSTR))); -- ok = yaffs_WriteCheckpointValidityMarker(dev, 0); -+ chunksAfter = yaffs_get_erased_chunks(dev); -+ if (chunksBefore >= chunksAfter) { -+ T(YAFFS_TRACE_GC, -+ (TSTR -+ ("gc did not increase free chunks before %d after %d" -+ TENDSTR), chunksBefore, chunksAfter)); -+ } -+ dev->gc_block = 0; -+ dev->gc_chunk = 0; -+ dev->n_clean_ups = 0; - } - -- if (ok) -- ok = yaffs_WriteCheckpointSum(dev); -- -- if (!yaffs_CheckpointClose(dev)) -- ok = 0; -- -- if (ok) -- dev->isCheckpointed = 1; -- else -- dev->isCheckpointed = 0; -+ dev->gc_disable = 0; - -- return dev->isCheckpointed; -+ return retVal; - } - --static int yaffs_ReadCheckpointData(yaffs_Device *dev) -+/* -+ * FindBlockForgarbageCollection is used to select the dirtiest block (or close enough) -+ * for garbage collection. -+ */ -+ -+static unsigned yaffs_find_gc_block(yaffs_dev_t *dev, -+ int aggressive, -+ int background) - { -- int ok = 1; -+ int i; -+ int iterations; -+ unsigned selected = 0; -+ int prioritised = 0; -+ int prioritisedExists = 0; -+ yaffs_block_info_t *bi; -+ int threshold; - -- if (dev->skipCheckpointRead || !dev->isYaffs2) { -- T(YAFFS_TRACE_CHECKPOINT, (TSTR("skipping checkpoint read" TENDSTR))); -- ok = 0; -- } -+ /* First let's see if we need to grab a prioritised block */ -+ if (dev->has_pending_prioritised_gc && !aggressive) { -+ dev->gc_dirtiest = 0; -+ bi = dev->block_info; -+ for (i = dev->internal_start_block; -+ i <= dev->internal_end_block && !selected; -+ i++) { -+ -+ if (bi->gc_prioritise) { -+ prioritisedExists = 1; -+ if (bi->block_state == YAFFS_BLOCK_STATE_FULL && -+ yaffs_block_ok_for_gc(dev, bi)) { -+ selected = i; -+ prioritised = 1; -+ } -+ } -+ bi++; -+ } - -- if (ok) -- ok = yaffs_CheckpointOpen(dev, 0); /* open for read */ -+ /* -+ * If there is a prioritised block and none was selected then -+ * this happened because there is at least one old dirty block gumming -+ * up the works. Let's gc the oldest dirty block. -+ */ - -- if (ok) { -- T(YAFFS_TRACE_CHECKPOINT, (TSTR("read checkpoint validity" TENDSTR))); -- ok = yaffs_ReadCheckpointValidityMarker(dev, 1); -- } -- if (ok) { -- T(YAFFS_TRACE_CHECKPOINT, (TSTR("read checkpoint device" TENDSTR))); -- ok = yaffs_ReadCheckpointDevice(dev); -- } -- if (ok) { -- T(YAFFS_TRACE_CHECKPOINT, (TSTR("read checkpoint objects" TENDSTR))); -- ok = yaffs_ReadCheckpointObjects(dev); -- } -- if (ok) { -- T(YAFFS_TRACE_CHECKPOINT, (TSTR("read checkpoint validity" TENDSTR))); -- ok = yaffs_ReadCheckpointValidityMarker(dev, 0); -- } -+ if(prioritisedExists && -+ !selected && -+ dev->oldest_dirty_block > 0) -+ selected = dev->oldest_dirty_block; - -- if (ok) { -- ok = yaffs_ReadCheckpointSum(dev); -- T(YAFFS_TRACE_CHECKPOINT, (TSTR("read checkpoint checksum %d" TENDSTR), ok)); -+ if (!prioritisedExists) /* None found, so we can clear this */ -+ dev->has_pending_prioritised_gc = 0; - } - -- if (!yaffs_CheckpointClose(dev)) -- ok = 0; -- -- if (ok) -- dev->isCheckpointed = 1; -- else -- dev->isCheckpointed = 0; -- -- return ok ? 1 : 0; -+ /* If we're doing aggressive GC then we are happy to take a less-dirty block, and -+ * search harder. -+ * else (we're doing a leasurely gc), then we only bother to do this if the -+ * block has only a few pages in use. -+ */ - --} -+ if (!selected){ -+ int pagesUsed; -+ int nBlocks = dev->internal_end_block - dev->internal_start_block + 1; -+ if (aggressive){ -+ threshold = dev->param.chunks_per_block; -+ iterations = nBlocks; -+ } else { -+ int maxThreshold; - --static void yaffs_InvalidateCheckpoint(yaffs_Device *dev) --{ -- if (dev->isCheckpointed || -- dev->blocksInCheckpoint > 0) { -- dev->isCheckpointed = 0; -- yaffs_CheckpointInvalidateStream(dev); -- if (dev->superBlock && dev->markSuperBlockDirty) -- dev->markSuperBlockDirty(dev->superBlock); -- } --} -+ if(background) -+ maxThreshold = dev->param.chunks_per_block/2; -+ else -+ maxThreshold = dev->param.chunks_per_block/8; - -+ if(maxThreshold < YAFFS_GC_PASSIVE_THRESHOLD) -+ maxThreshold = YAFFS_GC_PASSIVE_THRESHOLD; - --int yaffs_CheckpointSave(yaffs_Device *dev) --{ -+ threshold = background ? -+ (dev->gc_not_done + 2) * 2 : 0; -+ if(threshold <YAFFS_GC_PASSIVE_THRESHOLD) -+ threshold = YAFFS_GC_PASSIVE_THRESHOLD; -+ if(threshold > maxThreshold) -+ threshold = maxThreshold; - -- T(YAFFS_TRACE_CHECKPOINT, (TSTR("save entry: isCheckpointed %d"TENDSTR), dev->isCheckpointed)); -+ iterations = nBlocks / 16 + 1; -+ if (iterations > 100) -+ iterations = 100; -+ } - -- yaffs_VerifyObjects(dev); -- yaffs_VerifyBlocks(dev); -- yaffs_VerifyFreeChunks(dev); -+ for (i = 0; -+ i < iterations && -+ (dev->gc_dirtiest < 1 || -+ dev->gc_pages_in_use > YAFFS_GC_GOOD_ENOUGH); -+ i++) { -+ dev->gc_block_finder++; -+ if (dev->gc_block_finder < dev->internal_start_block || -+ dev->gc_block_finder > dev->internal_end_block) -+ dev->gc_block_finder = dev->internal_start_block; - -- if (!dev->isCheckpointed) { -- yaffs_InvalidateCheckpoint(dev); -- yaffs_WriteCheckpointData(dev); -- } -+ bi = yaffs_get_block_info(dev, dev->gc_block_finder); - -- T(YAFFS_TRACE_ALWAYS, (TSTR("save exit: isCheckpointed %d"TENDSTR), dev->isCheckpointed)); -+ pagesUsed = bi->pages_in_use - bi->soft_del_pages; - -- return dev->isCheckpointed; --} -+ if (bi->block_state == YAFFS_BLOCK_STATE_FULL && -+ pagesUsed < dev->param.chunks_per_block && -+ (dev->gc_dirtiest < 1 || pagesUsed < dev->gc_pages_in_use) && -+ yaffs_block_ok_for_gc(dev, bi)) { -+ dev->gc_dirtiest = dev->gc_block_finder; -+ dev->gc_pages_in_use = pagesUsed; -+ } -+ } - --int yaffs_CheckpointRestore(yaffs_Device *dev) --{ -- int retval; -- T(YAFFS_TRACE_CHECKPOINT, (TSTR("restore entry: isCheckpointed %d"TENDSTR), dev->isCheckpointed)); -+ if(dev->gc_dirtiest > 0 && dev->gc_pages_in_use <= threshold) -+ selected = dev->gc_dirtiest; -+ } - -- retval = yaffs_ReadCheckpointData(dev); -+ /* -+ * If nothing has been selected for a while, try selecting the oldest dirty -+ * because that's gumming up the works. -+ */ - -- if (dev->isCheckpointed) { -- yaffs_VerifyObjects(dev); -- yaffs_VerifyBlocks(dev); -- yaffs_VerifyFreeChunks(dev); -+ if(!selected && dev->param.is_yaffs2 && -+ dev->gc_not_done >= ( background ? 10 : 20)){ -+ yaffs2_find_oldest_dirty_seq(dev); -+ if(dev->oldest_dirty_block > 0) { -+ selected = dev->oldest_dirty_block; -+ dev->gc_dirtiest = selected; -+ dev->oldest_dirty_gc_count++; -+ bi = yaffs_get_block_info(dev, selected); -+ dev->gc_pages_in_use = bi->pages_in_use - bi->soft_del_pages; -+ } else -+ dev->gc_not_done = 0; - } - -- T(YAFFS_TRACE_CHECKPOINT, (TSTR("restore exit: isCheckpointed %d"TENDSTR), dev->isCheckpointed)); -+ if(selected){ -+ T(YAFFS_TRACE_GC, -+ (TSTR("GC Selected block %d with %d free, prioritised:%d" TENDSTR), -+ selected, -+ dev->param.chunks_per_block - dev->gc_pages_in_use, -+ prioritised)); -+ -+ dev->n_gc_blocks++; -+ if(background) -+ dev->bg_gcs++; -+ -+ dev->gc_dirtiest = 0; -+ dev->gc_pages_in_use = 0; -+ dev->gc_not_done = 0; -+ if(dev->refresh_skip > 0) -+ dev->refresh_skip--; -+ } else{ -+ dev->gc_not_done++; -+ T(YAFFS_TRACE_GC, -+ (TSTR("GC none: finder %d skip %d threshold %d dirtiest %d using %d oldest %d%s" TENDSTR), -+ dev->gc_block_finder, dev->gc_not_done, -+ threshold, -+ dev->gc_dirtiest, dev->gc_pages_in_use, -+ dev->oldest_dirty_block, -+ background ? " bg" : "")); -+ } - -- return retval; -+ return selected; - } - --/*--------------------- File read/write ------------------------ -- * Read and write have very similar structures. -- * In general the read/write has three parts to it -- * An incomplete chunk to start with (if the read/write is not chunk-aligned) -- * Some complete chunks -- * An incomplete chunk to end off with -+/* New garbage collector -+ * If we're very low on erased blocks then we do aggressive garbage collection -+ * otherwise we do "leasurely" garbage collection. -+ * Aggressive gc looks further (whole array) and will accept less dirty blocks. -+ * Passive gc only inspects smaller areas and will only accept more dirty blocks. - * -- * Curve-balls: the first chunk might also be the last chunk. -+ * The idea is to help clear out space in a more spread-out manner. -+ * Dunno if it really does anything useful. - */ -- --int yaffs_ReadDataFromFile(yaffs_Object *in, __u8 *buffer, loff_t offset, -- int nBytes) -+static int yaffs_check_gc(yaffs_dev_t *dev, int background) - { -+ int aggressive = 0; -+ int gcOk = YAFFS_OK; -+ int maxTries = 0; -+ int minErased; -+ int erasedChunks; -+ int checkpointBlockAdjust; - -- int chunk; -- __u32 start; -- int nToCopy; -- int n = nBytes; -- int nDone = 0; -- yaffs_ChunkCache *cache; -- -- yaffs_Device *dev; -- -- dev = in->myDev; -- -- while (n > 0) { -- /* chunk = offset / dev->nDataBytesPerChunk + 1; */ -- /* start = offset % dev->nDataBytesPerChunk; */ -- yaffs_AddrToChunk(dev, offset, &chunk, &start); -- chunk++; -- -- /* OK now check for the curveball where the start and end are in -- * the same chunk. -- */ -- if ((start + n) < dev->nDataBytesPerChunk) -- nToCopy = n; -- else -- nToCopy = dev->nDataBytesPerChunk - start; -- -- cache = yaffs_FindChunkCache(in, chunk); -- -- /* If the chunk is already in the cache or it is less than a whole chunk -- * or we're using inband tags then use the cache (if there is caching) -- * else bypass the cache. -- */ -- if (cache || nToCopy != dev->nDataBytesPerChunk || dev->inbandTags) { -- if (dev->nShortOpCaches > 0) { -- -- /* If we can't find the data in the cache, then load it up. */ -+ if(dev->param.gc_control && -+ (dev->param.gc_control(dev) & 1) == 0) -+ return YAFFS_OK; - -- if (!cache) { -- cache = yaffs_GrabChunkCache(in->myDev); -- cache->object = in; -- cache->chunkId = chunk; -- cache->dirty = 0; -- cache->locked = 0; -- yaffs_ReadChunkDataFromObject(in, chunk, -- cache-> -- data); -- cache->nBytes = 0; -- } -+ if (dev->gc_disable) { -+ /* Bail out so we don't get recursive gc */ -+ return YAFFS_OK; -+ } - -- yaffs_UseChunkCache(dev, cache, 0); -+ /* This loop should pass the first time. -+ * We'll only see looping here if the collection does not increase space. -+ */ - -- cache->locked = 1; -+ do { -+ maxTries++; - -+ checkpointBlockAdjust = yaffs_calc_checkpt_blocks_required(dev); - -- memcpy(buffer, &cache->data[start], nToCopy); -+ minErased = dev->param.n_reserved_blocks + checkpointBlockAdjust + 1; -+ erasedChunks = dev->n_erased_blocks * dev->param.chunks_per_block; - -- cache->locked = 0; -- } else { -- /* Read into the local buffer then copy..*/ -+ /* If we need a block soon then do aggressive gc.*/ -+ if (dev->n_erased_blocks < minErased) -+ aggressive = 1; -+ else { -+ if(!background && erasedChunks > (dev->n_free_chunks / 4)) -+ break; - -- __u8 *localBuffer = -- yaffs_GetTempBuffer(dev, __LINE__); -- yaffs_ReadChunkDataFromObject(in, chunk, -- localBuffer); -+ if(dev->gc_skip > 20) -+ dev->gc_skip = 20; -+ if(erasedChunks < dev->n_free_chunks/2 || -+ dev->gc_skip < 1 || -+ background) -+ aggressive = 0; -+ else { -+ dev->gc_skip--; -+ break; -+ } -+ } - -- memcpy(buffer, &localBuffer[start], nToCopy); -+ dev->gc_skip = 5; - -+ /* If we don't already have a block being gc'd then see if we should start another */ - -- yaffs_ReleaseTempBuffer(dev, localBuffer, -- __LINE__); -- } -+ if (dev->gc_block < 1 && !aggressive) { -+ dev->gc_block = yaffs2_find_refresh_block(dev); -+ dev->gc_chunk = 0; -+ dev->n_clean_ups=0; -+ } -+ if (dev->gc_block < 1) { -+ dev->gc_block = yaffs_find_gc_block(dev, aggressive, background); -+ dev->gc_chunk = 0; -+ dev->n_clean_ups=0; -+ } - -- } else { -+ if (dev->gc_block > 0) { -+ dev->all_gcs++; -+ if (!aggressive) -+ dev->passive_gc_count++; - -- /* A full chunk. Read directly into the supplied buffer. */ -- yaffs_ReadChunkDataFromObject(in, chunk, buffer); -+ T(YAFFS_TRACE_GC, -+ (TSTR -+ ("yaffs: GC erasedBlocks %d aggressive %d" TENDSTR), -+ dev->n_erased_blocks, aggressive)); - -+ gcOk = yaffs_gc_block(dev, dev->gc_block, aggressive); - } - -- n -= nToCopy; -- offset += nToCopy; -- buffer += nToCopy; -- nDone += nToCopy; -- -- } -+ if (dev->n_erased_blocks < (dev->param.n_reserved_blocks) && dev->gc_block > 0) { -+ T(YAFFS_TRACE_GC, -+ (TSTR -+ ("yaffs: GC !!!no reclaim!!! erasedBlocks %d after try %d block %d" -+ TENDSTR), dev->n_erased_blocks, maxTries, dev->gc_block)); -+ } -+ } while ((dev->n_erased_blocks < dev->param.n_reserved_blocks) && -+ (dev->gc_block > 0) && -+ (maxTries < 2)); - -- return nDone; -+ return aggressive ? gcOk : YAFFS_OK; - } - --int yaffs_WriteDataToFile(yaffs_Object *in, const __u8 *buffer, loff_t offset, -- int nBytes, int writeThrough) -+/* -+ * yaffs_bg_gc() -+ * Garbage collects. Intended to be called from a background thread. -+ * Returns non-zero if at least half the free chunks are erased. -+ */ -+int yaffs_bg_gc(yaffs_dev_t *dev, unsigned urgency) - { -+ int erasedChunks = dev->n_erased_blocks * dev->param.chunks_per_block; - -- int chunk; -- __u32 start; -- int nToCopy; -- int n = nBytes; -- int nDone = 0; -- int nToWriteBack; -- int startOfWrite = offset; -- int chunkWritten = 0; -- __u32 nBytesRead; -- __u32 chunkStart; -+ T(YAFFS_TRACE_BACKGROUND, (TSTR("Background gc %u" TENDSTR),urgency)); - -- yaffs_Device *dev; -+ yaffs_check_gc(dev, 1); -+ return erasedChunks > dev->n_free_chunks/2; -+} - -- dev = in->myDev; -+/*------------------------- TAGS --------------------------------*/ - -- while (n > 0 && chunkWritten >= 0) { -- /* chunk = offset / dev->nDataBytesPerChunk + 1; */ -- /* start = offset % dev->nDataBytesPerChunk; */ -- yaffs_AddrToChunk(dev, offset, &chunk, &start); -+static int yaffs_tags_match(const yaffs_ext_tags *tags, int obj_id, -+ int chunkInObject) -+{ -+ return (tags->chunk_id == chunkInObject && -+ tags->obj_id == obj_id && !tags->is_deleted) ? 1 : 0; - -- if (chunk * dev->nDataBytesPerChunk + start != offset || -- start >= dev->nDataBytesPerChunk) { -- T(YAFFS_TRACE_ERROR, ( -- TSTR("AddrToChunk of offset %d gives chunk %d start %d" -- TENDSTR), -- (int)offset, chunk, start)); -- } -- chunk++; -+} - -- /* OK now check for the curveball where the start and end are in -- * the same chunk. -- */ - -- if ((start + n) < dev->nDataBytesPerChunk) { -- nToCopy = n; -+/*-------------------- Data file manipulation -----------------*/ - -- /* Now folks, to calculate how many bytes to write back.... -- * If we're overwriting and not writing to then end of file then -- * we need to write back as much as was there before. -- */ -+static int yaffs_find_chunk_in_file(yaffs_obj_t *in, int inode_chunk, -+ yaffs_ext_tags *tags) -+{ -+ /*Get the Tnode, then get the level 0 offset chunk offset */ -+ yaffs_tnode_t *tn; -+ int theChunk = -1; -+ yaffs_ext_tags localTags; -+ int retVal = -1; - -- chunkStart = ((chunk - 1) * dev->nDataBytesPerChunk); -+ yaffs_dev_t *dev = in->my_dev; - -- if (chunkStart > in->variant.fileVariant.fileSize) -- nBytesRead = 0; /* Past end of file */ -- else -- nBytesRead = in->variant.fileVariant.fileSize - chunkStart; -+ if (!tags) { -+ /* Passed a NULL, so use our own tags space */ -+ tags = &localTags; -+ } - -- if (nBytesRead > dev->nDataBytesPerChunk) -- nBytesRead = dev->nDataBytesPerChunk; -+ tn = yaffs_find_tnode_0(dev, &in->variant.file_variant, inode_chunk); - -- nToWriteBack = -- (nBytesRead > -- (start + n)) ? nBytesRead : (start + n); -+ if (tn) { -+ theChunk = yaffs_get_group_base(dev, tn, inode_chunk); - -- if (nToWriteBack < 0 || nToWriteBack > dev->nDataBytesPerChunk) -- YBUG(); -+ retVal = -+ yaffs_find_chunk_in_group(dev, theChunk, tags, in->obj_id, -+ inode_chunk); -+ } -+ return retVal; -+} - -- } else { -- nToCopy = dev->nDataBytesPerChunk - start; -- nToWriteBack = dev->nDataBytesPerChunk; -- } -+static int yaffs_find_del_file_chunk(yaffs_obj_t *in, int inode_chunk, -+ yaffs_ext_tags *tags) -+{ -+ /* Get the Tnode, then get the level 0 offset chunk offset */ -+ yaffs_tnode_t *tn; -+ int theChunk = -1; -+ yaffs_ext_tags localTags; - -- if (nToCopy != dev->nDataBytesPerChunk || dev->inbandTags) { -- /* An incomplete start or end chunk (or maybe both start and end chunk), -- * or we're using inband tags, so we want to use the cache buffers. -- */ -- if (dev->nShortOpCaches > 0) { -- yaffs_ChunkCache *cache; -- /* If we can't find the data in the cache, then load the cache */ -- cache = yaffs_FindChunkCache(in, chunk); -+ yaffs_dev_t *dev = in->my_dev; -+ int retVal = -1; - -- if (!cache -- && yaffs_CheckSpaceForAllocation(in-> -- myDev)) { -- cache = yaffs_GrabChunkCache(in->myDev); -- cache->object = in; -- cache->chunkId = chunk; -- cache->dirty = 0; -- cache->locked = 0; -- yaffs_ReadChunkDataFromObject(in, chunk, -- cache-> -- data); -- } else if (cache && -- !cache->dirty && -- !yaffs_CheckSpaceForAllocation(in->myDev)) { -- /* Drop the cache if it was a read cache item and -- * no space check has been made for it. -- */ -- cache = NULL; -- } -+ if (!tags) { -+ /* Passed a NULL, so use our own tags space */ -+ tags = &localTags; -+ } - -- if (cache) { -- yaffs_UseChunkCache(dev, cache, 1); -- cache->locked = 1; -+ tn = yaffs_find_tnode_0(dev, &in->variant.file_variant, inode_chunk); - -+ if (tn) { - -- memcpy(&cache->data[start], buffer, -- nToCopy); -+ theChunk = yaffs_get_group_base(dev, tn, inode_chunk); - -+ retVal = -+ yaffs_find_chunk_in_group(dev, theChunk, tags, in->obj_id, -+ inode_chunk); - -- cache->locked = 0; -- cache->nBytes = nToWriteBack; -+ /* Delete the entry in the filestructure (if found) */ -+ if (retVal != -1) -+ yaffs_load_tnode_0(dev, tn, inode_chunk, 0); -+ } - -- if (writeThrough) { -- chunkWritten = -- yaffs_WriteChunkDataToObject -- (cache->object, -- cache->chunkId, -- cache->data, cache->nBytes, -- 1); -- cache->dirty = 0; -- } -+ return retVal; -+} - -- } else { -- chunkWritten = -1; /* fail the write */ -- } -- } else { -- /* An incomplete start or end chunk (or maybe both start and end chunk) -- * Read into the local buffer then copy, then copy over and write back. -- */ - -- __u8 *localBuffer = -- yaffs_GetTempBuffer(dev, __LINE__); -+int yaffs_put_chunk_in_file(yaffs_obj_t *in, int inode_chunk, -+ int nand_chunk, int in_scan) -+{ -+ /* NB in_scan is zero unless scanning. -+ * For forward scanning, in_scan is > 0; -+ * for backward scanning in_scan is < 0 -+ * -+ * nand_chunk = 0 is a dummy insert to make sure the tnodes are there. -+ */ - -- yaffs_ReadChunkDataFromObject(in, chunk, -- localBuffer); -+ yaffs_tnode_t *tn; -+ yaffs_dev_t *dev = in->my_dev; -+ int existingChunk; -+ yaffs_ext_tags existingTags; -+ yaffs_ext_tags newTags; -+ unsigned existingSerial, newSerial; - -+ if (in->variant_type != YAFFS_OBJECT_TYPE_FILE) { -+ /* Just ignore an attempt at putting a chunk into a non-file during scanning -+ * If it is not during Scanning then something went wrong! -+ */ -+ if (!in_scan) { -+ T(YAFFS_TRACE_ERROR, -+ (TSTR -+ ("yaffs tragedy:attempt to put data chunk into a non-file" -+ TENDSTR))); -+ YBUG(); -+ } - -+ yaffs_chunk_del(dev, nand_chunk, 1, __LINE__); -+ return YAFFS_OK; -+ } - -- memcpy(&localBuffer[start], buffer, nToCopy); -+ tn = yaffs_add_find_tnode_0(dev, -+ &in->variant.file_variant, -+ inode_chunk, -+ NULL); -+ if (!tn) -+ return YAFFS_FAIL; -+ -+ if(!nand_chunk) -+ /* Dummy insert, bail now */ -+ return YAFFS_OK; - -- chunkWritten = -- yaffs_WriteChunkDataToObject(in, chunk, -- localBuffer, -- nToWriteBack, -- 0); -+ existingChunk = yaffs_get_group_base(dev, tn, inode_chunk); - -- yaffs_ReleaseTempBuffer(dev, localBuffer, -- __LINE__); -+ if (in_scan != 0) { -+ /* If we're scanning then we need to test for duplicates -+ * NB This does not need to be efficient since it should only ever -+ * happen when the power fails during a write, then only one -+ * chunk should ever be affected. -+ * -+ * Correction for YAFFS2: This could happen quite a lot and we need to think about efficiency! TODO -+ * Update: For backward scanning we don't need to re-read tags so this is quite cheap. -+ */ -+ -+ if (existingChunk > 0) { -+ /* NB Right now existing chunk will not be real chunk_id if the chunk group size > 1 -+ * thus we have to do a FindChunkInFile to get the real chunk id. -+ * -+ * We have a duplicate now we need to decide which one to use: -+ * -+ * Backwards scanning YAFFS2: The old one is what we use, dump the new one. -+ * Forward scanning YAFFS2: The new one is what we use, dump the old one. -+ * YAFFS1: Get both sets of tags and compare serial numbers. -+ */ -+ -+ if (in_scan > 0) { -+ /* Only do this for forward scanning */ -+ yaffs_rd_chunk_tags_nand(dev, -+ nand_chunk, -+ NULL, &newTags); - -+ /* Do a proper find */ -+ existingChunk = -+ yaffs_find_chunk_in_file(in, inode_chunk, -+ &existingTags); - } - -- } else { -- /* A full chunk. Write directly from the supplied buffer. */ -+ if (existingChunk <= 0) { -+ /*Hoosterman - how did this happen? */ - -+ T(YAFFS_TRACE_ERROR, -+ (TSTR -+ ("yaffs tragedy: existing chunk < 0 in scan" -+ TENDSTR))); - -+ } - -- chunkWritten = -- yaffs_WriteChunkDataToObject(in, chunk, buffer, -- dev->nDataBytesPerChunk, -- 0); -+ /* NB The deleted flags should be false, otherwise the chunks will -+ * not be loaded during a scan -+ */ - -- /* Since we've overwritten the cached data, we better invalidate it. */ -- yaffs_InvalidateChunkCache(in, chunk); -- } -+ if (in_scan > 0) { -+ newSerial = newTags.serial_number; -+ existingSerial = existingTags.serial_number; -+ } - -- if (chunkWritten >= 0) { -- n -= nToCopy; -- offset += nToCopy; -- buffer += nToCopy; -- nDone += nToCopy; -+ if ((in_scan > 0) && -+ (existingChunk <= 0 || -+ ((existingSerial + 1) & 3) == newSerial)) { -+ /* Forward scanning. -+ * Use new -+ * Delete the old one and drop through to update the tnode -+ */ -+ yaffs_chunk_del(dev, existingChunk, 1, -+ __LINE__); -+ } else { -+ /* Backward scanning or we want to use the existing one -+ * Use existing. -+ * Delete the new one and return early so that the tnode isn't changed -+ */ -+ yaffs_chunk_del(dev, nand_chunk, 1, -+ __LINE__); -+ return YAFFS_OK; -+ } - } - - } - -- /* Update file object */ -- -- if ((startOfWrite + nDone) > in->variant.fileVariant.fileSize) -- in->variant.fileVariant.fileSize = (startOfWrite + nDone); -+ if (existingChunk == 0) -+ in->n_data_chunks++; - -- in->dirty = 1; -+ yaffs_load_tnode_0(dev, tn, inode_chunk, nand_chunk); - -- return nDone; -+ return YAFFS_OK; - } - -+static int yaffs_rd_data_obj(yaffs_obj_t *in, int inode_chunk, -+ __u8 *buffer) -+{ -+ int nand_chunk = yaffs_find_chunk_in_file(in, inode_chunk, NULL); - --/* ---------------------- File resizing stuff ------------------ */ -+ if (nand_chunk >= 0) -+ return yaffs_rd_chunk_tags_nand(in->my_dev, nand_chunk, -+ buffer, NULL); -+ else { -+ T(YAFFS_TRACE_NANDACCESS, -+ (TSTR("Chunk %d not found zero instead" TENDSTR), -+ nand_chunk)); -+ /* get sane (zero) data if you read a hole */ -+ memset(buffer, 0, in->my_dev->data_bytes_per_chunk); -+ return 0; -+ } -+ -+} - --static void yaffs_PruneResizedChunks(yaffs_Object *in, int newSize) -+void yaffs_chunk_del(yaffs_dev_t *dev, int chunk_id, int mark_flash, int lyn) - { -+ int block; -+ int page; -+ yaffs_ext_tags tags; -+ yaffs_block_info_t *bi; - -- yaffs_Device *dev = in->myDev; -- int oldFileSize = in->variant.fileVariant.fileSize; -+ if (chunk_id <= 0) -+ return; - -- int lastDel = 1 + (oldFileSize - 1) / dev->nDataBytesPerChunk; -+ dev->n_deletions++; -+ block = chunk_id / dev->param.chunks_per_block; -+ page = chunk_id % dev->param.chunks_per_block; - -- int startDel = 1 + (newSize + dev->nDataBytesPerChunk - 1) / -- dev->nDataBytesPerChunk; -- int i; -- int chunkId; - -- /* Delete backwards so that we don't end up with holes if -- * power is lost part-way through the operation. -+ if (!yaffs_check_chunk_bit(dev, block, page)) -+ T(YAFFS_TRACE_VERIFY, -+ (TSTR("Deleting invalid chunk %d"TENDSTR), -+ chunk_id)); -+ -+ bi = yaffs_get_block_info(dev, block); -+ -+ yaffs2_update_oldest_dirty_seq(dev, block, bi); -+ -+ T(YAFFS_TRACE_DELETION, -+ (TSTR("line %d delete of chunk %d" TENDSTR), lyn, chunk_id)); -+ -+ if (!dev->param.is_yaffs2 && mark_flash && -+ bi->block_state != YAFFS_BLOCK_STATE_COLLECTING) { -+ -+ yaffs_init_tags(&tags); -+ -+ tags.is_deleted = 1; -+ -+ yaffs_wr_chunk_tags_nand(dev, chunk_id, NULL, &tags); -+ yaffs_handle_chunk_update(dev, chunk_id, &tags); -+ } else { -+ dev->n_unmarked_deletions++; -+ } -+ -+ /* Pull out of the management area. -+ * If the whole block became dirty, this will kick off an erasure. - */ -- for (i = lastDel; i >= startDel; i--) { -- /* NB this could be optimised somewhat, -- * eg. could retrieve the tags and write them without -- * using yaffs_DeleteChunk -- */ -+ if (bi->block_state == YAFFS_BLOCK_STATE_ALLOCATING || -+ bi->block_state == YAFFS_BLOCK_STATE_FULL || -+ bi->block_state == YAFFS_BLOCK_STATE_NEEDS_SCANNING || -+ bi->block_state == YAFFS_BLOCK_STATE_COLLECTING) { -+ dev->n_free_chunks++; - -- chunkId = yaffs_FindAndDeleteChunkInFile(in, i, NULL); -- if (chunkId > 0) { -- if (chunkId < -- (dev->internalStartBlock * dev->nChunksPerBlock) -- || chunkId >= -- ((dev->internalEndBlock + -- 1) * dev->nChunksPerBlock)) { -- T(YAFFS_TRACE_ALWAYS, -- (TSTR("Found daft chunkId %d for %d" TENDSTR), -- chunkId, i)); -- } else { -- in->nDataChunks--; -- yaffs_DeleteChunk(dev, chunkId, 1, __LINE__); -- } -+ yaffs_clear_chunk_bit(dev, block, page); -+ -+ bi->pages_in_use--; -+ -+ if (bi->pages_in_use == 0 && -+ !bi->has_shrink_hdr && -+ bi->block_state != YAFFS_BLOCK_STATE_ALLOCATING && -+ bi->block_state != YAFFS_BLOCK_STATE_NEEDS_SCANNING) { -+ yaffs_block_became_dirty(dev, block); - } -+ - } - - } - --int yaffs_ResizeFile(yaffs_Object *in, loff_t newSize) -+static int yaffs_wr_data_obj(yaffs_obj_t *in, int inode_chunk, -+ const __u8 *buffer, int n_bytes, -+ int useReserve) - { -+ /* Find old chunk Need to do this to get serial number -+ * Write new one and patch into tree. -+ * Invalidate old tags. -+ */ - -- int oldFileSize = in->variant.fileVariant.fileSize; -- __u32 newSizeOfPartialChunk; -- int newFullChunks; -+ int prevChunkId; -+ yaffs_ext_tags prevTags; - -- yaffs_Device *dev = in->myDev; -+ int newChunkId; -+ yaffs_ext_tags newTags; - -- yaffs_AddrToChunk(dev, newSize, &newFullChunks, &newSizeOfPartialChunk); -+ yaffs_dev_t *dev = in->my_dev; - -- yaffs_FlushFilesChunkCache(in); -- yaffs_InvalidateWholeChunkCache(in); -+ yaffs_check_gc(dev,0); - -- yaffs_CheckGarbageCollection(dev); -+ /* Get the previous chunk at this location in the file if it exists. -+ * If it does not exist then put a zero into the tree. This creates -+ * the tnode now, rather than later when it is harder to clean up. -+ */ -+ prevChunkId = yaffs_find_chunk_in_file(in, inode_chunk, &prevTags); -+ if(prevChunkId < 1 && -+ !yaffs_put_chunk_in_file(in, inode_chunk, 0, 0)) -+ return 0; - -- if (in->variantType != YAFFS_OBJECT_TYPE_FILE) -- return YAFFS_FAIL; -+ /* Set up new tags */ -+ yaffs_init_tags(&newTags); - -- if (newSize == oldFileSize) -- return YAFFS_OK; -+ newTags.chunk_id = inode_chunk; -+ newTags.obj_id = in->obj_id; -+ newTags.serial_number = -+ (prevChunkId > 0) ? prevTags.serial_number + 1 : 1; -+ newTags.n_bytes = n_bytes; - -- if (newSize < oldFileSize) { -+ if (n_bytes < 1 || n_bytes > dev->param.total_bytes_per_chunk) { -+ T(YAFFS_TRACE_ERROR, -+ (TSTR("Writing %d bytes to chunk!!!!!!!!!" TENDSTR), n_bytes)); -+ YBUG(); -+ } -+ -+ -+ newChunkId = -+ yaffs_write_new_chunk(dev, buffer, &newTags, -+ useReserve); - -- yaffs_PruneResizedChunks(in, newSize); -+ if (newChunkId > 0) { -+ yaffs_put_chunk_in_file(in, inode_chunk, newChunkId, 0); - -- if (newSizeOfPartialChunk != 0) { -- int lastChunk = 1 + newFullChunks; -+ if (prevChunkId > 0) -+ yaffs_chunk_del(dev, prevChunkId, 1, __LINE__); - -- __u8 *localBuffer = yaffs_GetTempBuffer(dev, __LINE__); -+ yaffs_verify_file_sane(in); -+ } -+ return newChunkId; - -- /* Got to read and rewrite the last chunk with its new size and zero pad */ -- yaffs_ReadChunkDataFromObject(in, lastChunk, -- localBuffer); -+} - -- memset(localBuffer + newSizeOfPartialChunk, 0, -- dev->nDataBytesPerChunk - newSizeOfPartialChunk); -+/* UpdateObjectHeader updates the header on NAND for an object. -+ * If name is not NULL, then that new name is used. -+ */ -+int yaffs_update_oh(yaffs_obj_t *in, const YCHAR *name, int force, -+ int is_shrink, int shadows, yaffs_xattr_mod *xmod) -+{ - -- yaffs_WriteChunkDataToObject(in, lastChunk, localBuffer, -- newSizeOfPartialChunk, 1); -+ yaffs_block_info_t *bi; - -- yaffs_ReleaseTempBuffer(dev, localBuffer, __LINE__); -- } -+ yaffs_dev_t *dev = in->my_dev; - -- in->variant.fileVariant.fileSize = newSize; -+ int prevChunkId; -+ int retVal = 0; -+ int result = 0; - -- yaffs_PruneFileStructure(dev, &in->variant.fileVariant); -- } else { -- /* newsSize > oldFileSize */ -- in->variant.fileVariant.fileSize = newSize; -- } -+ int newChunkId; -+ yaffs_ext_tags newTags; -+ yaffs_ext_tags oldTags; -+ const YCHAR *alias = NULL; - -+ __u8 *buffer = NULL; -+ YCHAR old_name[YAFFS_MAX_NAME_LENGTH + 1]; - -- /* Write a new object header. -- * show we've shrunk the file, if need be -- * Do this only if the file is not in the deleted directories. -- */ -- if (in->parent && -- in->parent->objectId != YAFFS_OBJECTID_UNLINKED && -- in->parent->objectId != YAFFS_OBJECTID_DELETED) -- yaffs_UpdateObjectHeader(in, NULL, 0, -- (newSize < oldFileSize) ? 1 : 0, 0); -+ yaffs_obj_header *oh = NULL; - -- return YAFFS_OK; --} -+ yaffs_strcpy(old_name, _Y("silly old name")); - --loff_t yaffs_GetFileSize(yaffs_Object *obj) --{ -- obj = yaffs_GetEquivalentObject(obj); - -- switch (obj->variantType) { -- case YAFFS_OBJECT_TYPE_FILE: -- return obj->variant.fileVariant.fileSize; -- case YAFFS_OBJECT_TYPE_SYMLINK: -- return yaffs_strlen(obj->variant.symLinkVariant.alias); -- default: -- return 0; -- } --} -+ if (!in->fake || -+ in == dev->root_dir || /* The root_dir should also be saved */ -+ force || xmod) { - -+ yaffs_check_gc(dev,0); -+ yaffs_check_obj_details_loaded(in); - -+ buffer = yaffs_get_temp_buffer(in->my_dev, __LINE__); -+ oh = (yaffs_obj_header *) buffer; -+ -+ prevChunkId = in->hdr_chunk; -+ -+ if (prevChunkId > 0) { -+ result = yaffs_rd_chunk_tags_nand(dev, prevChunkId, -+ buffer, &oldTags); -+ -+ yaffs_verify_oh(in, oh, &oldTags, 0); -+ -+ memcpy(old_name, oh->name, sizeof(oh->name)); -+ memset(buffer, 0xFF, sizeof(yaffs_obj_header)); -+ } else -+ memset(buffer, 0xFF, dev->data_bytes_per_chunk); -+ -+ oh->type = in->variant_type; -+ oh->yst_mode = in->yst_mode; -+ oh->shadows_obj = oh->inband_shadowed_obj_id = shadows; - --int yaffs_FlushFile(yaffs_Object *in, int updateTime) --{ -- int retVal; -- if (in->dirty) { -- yaffs_FlushFilesChunkCache(in); -- if (updateTime) { - #ifdef CONFIG_YAFFS_WINCE -- yfsd_WinFileTimeNow(in->win_mtime); -+ oh->win_atime[0] = in->win_atime[0]; -+ oh->win_ctime[0] = in->win_ctime[0]; -+ oh->win_mtime[0] = in->win_mtime[0]; -+ oh->win_atime[1] = in->win_atime[1]; -+ oh->win_ctime[1] = in->win_ctime[1]; -+ oh->win_mtime[1] = in->win_mtime[1]; - #else -+ oh->yst_uid = in->yst_uid; -+ oh->yst_gid = in->yst_gid; -+ oh->yst_atime = in->yst_atime; -+ oh->yst_mtime = in->yst_mtime; -+ oh->yst_ctime = in->yst_ctime; -+ oh->yst_rdev = in->yst_rdev; -+#endif -+ if (in->parent) -+ oh->parent_obj_id = in->parent->obj_id; -+ else -+ oh->parent_obj_id = 0; -+ -+ if (name && *name) { -+ memset(oh->name, 0, sizeof(oh->name)); -+ yaffs_load_oh_from_name(dev,oh->name,name); -+ } else if (prevChunkId > 0) -+ memcpy(oh->name, old_name, sizeof(oh->name)); -+ else -+ memset(oh->name, 0, sizeof(oh->name)); - -- in->yst_mtime = Y_CURRENT_TIME; -+ oh->is_shrink = is_shrink; - --#endif -+ switch (in->variant_type) { -+ case YAFFS_OBJECT_TYPE_UNKNOWN: -+ /* Should not happen */ -+ break; -+ case YAFFS_OBJECT_TYPE_FILE: -+ oh->file_size = -+ (oh->parent_obj_id == YAFFS_OBJECTID_DELETED -+ || oh->parent_obj_id == -+ YAFFS_OBJECTID_UNLINKED) ? 0 : in->variant. -+ file_variant.file_size; -+ break; -+ case YAFFS_OBJECT_TYPE_HARDLINK: -+ oh->equiv_id = -+ in->variant.hardlink_variant.equiv_id; -+ break; -+ case YAFFS_OBJECT_TYPE_SPECIAL: -+ /* Do nothing */ -+ break; -+ case YAFFS_OBJECT_TYPE_DIRECTORY: -+ /* Do nothing */ -+ break; -+ case YAFFS_OBJECT_TYPE_SYMLINK: -+ alias = in->variant.symlink_variant.alias; -+ if(!alias) -+ alias = _Y("no alias"); -+ yaffs_strncpy(oh->alias, -+ alias, -+ YAFFS_MAX_ALIAS_LENGTH); -+ oh->alias[YAFFS_MAX_ALIAS_LENGTH] = 0; -+ break; - } - -- retVal = (yaffs_UpdateObjectHeader(in, NULL, 0, 0, 0) >= -- 0) ? YAFFS_OK : YAFFS_FAIL; -- } else { -- retVal = YAFFS_OK; -- } -+ /* process any xattrib modifications */ -+ if(xmod) -+ yaffs_apply_xattrib_mod(in, (char *)buffer, xmod); - -- return retVal; - --} -+ /* Tags */ -+ yaffs_init_tags(&newTags); -+ in->serial++; -+ newTags.chunk_id = 0; -+ newTags.obj_id = in->obj_id; -+ newTags.serial_number = in->serial; - --static int yaffs_DoGenericObjectDeletion(yaffs_Object *in) --{ -+ /* Add extra info for file header */ - -- /* First off, invalidate the file's data in the cache, without flushing. */ -- yaffs_InvalidateWholeChunkCache(in); -+ newTags.extra_available = 1; -+ newTags.extra_parent_id = oh->parent_obj_id; -+ newTags.extra_length = oh->file_size; -+ newTags.extra_is_shrink = oh->is_shrink; -+ newTags.extra_equiv_id = oh->equiv_id; -+ newTags.extra_shadows = (oh->shadows_obj > 0) ? 1 : 0; -+ newTags.extra_obj_type = in->variant_type; - -- if (in->myDev->isYaffs2 && (in->parent != in->myDev->deletedDir)) { -- /* Move to the unlinked directory so we have a record that it was deleted. */ -- yaffs_ChangeObjectName(in, in->myDev->deletedDir, _Y("deleted"), 0, 0); -+ yaffs_verify_oh(in, oh, &newTags, 1); - -- } -+ /* Create new chunk in NAND */ -+ newChunkId = -+ yaffs_write_new_chunk(dev, buffer, &newTags, -+ (prevChunkId > 0) ? 1 : 0); - -- yaffs_RemoveObjectFromDirectory(in); -- yaffs_DeleteChunk(in->myDev, in->hdrChunk, 1, __LINE__); -- in->hdrChunk = 0; -+ if (newChunkId >= 0) { - -- yaffs_FreeObject(in); -- return YAFFS_OK; -+ in->hdr_chunk = newChunkId; - --} -+ if (prevChunkId > 0) { -+ yaffs_chunk_del(dev, prevChunkId, 1, -+ __LINE__); -+ } - --/* yaffs_DeleteFile deletes the whole file data -- * and the inode associated with the file. -- * It does not delete the links associated with the file. -- */ --static int yaffs_UnlinkFileIfNeeded(yaffs_Object *in) --{ -+ if (!yaffs_obj_cache_dirty(in)) -+ in->dirty = 0; - -- int retVal; -- int immediateDeletion = 0; -+ /* If this was a shrink, then mark the block that the chunk lives on */ -+ if (is_shrink) { -+ bi = yaffs_get_block_info(in->my_dev, -+ newChunkId / in->my_dev->param.chunks_per_block); -+ bi->has_shrink_hdr = 1; -+ } - --#ifdef __KERNEL__ -- if (!in->myInode) -- immediateDeletion = 1; --#else -- if (in->inUse <= 0) -- immediateDeletion = 1; --#endif -+ } -+ -+ retVal = newChunkId; - -- if (immediateDeletion) { -- retVal = -- yaffs_ChangeObjectName(in, in->myDev->deletedDir, -- _Y("deleted"), 0, 0); -- T(YAFFS_TRACE_TRACING, -- (TSTR("yaffs: immediate deletion of file %d" TENDSTR), -- in->objectId)); -- in->deleted = 1; -- in->myDev->nDeletedFiles++; -- if (1 || in->myDev->isYaffs2) -- yaffs_ResizeFile(in, 0); -- yaffs_SoftDeleteFile(in); -- } else { -- retVal = -- yaffs_ChangeObjectName(in, in->myDev->unlinkedDir, -- _Y("unlinked"), 0, 0); - } - -+ if (buffer) -+ yaffs_release_temp_buffer(dev, buffer, __LINE__); - - return retVal; - } - --int yaffs_DeleteFile(yaffs_Object *in) --{ -- int retVal = YAFFS_OK; -- int deleted = in->deleted; -- -- yaffs_ResizeFile(in, 0); -- -- if (in->nDataChunks > 0) { -- /* Use soft deletion if there is data in the file. -- * That won't be the case if it has been resized to zero. -- */ -- if (!in->unlinked) -- retVal = yaffs_UnlinkFileIfNeeded(in); -- -- if (retVal == YAFFS_OK && in->unlinked && !in->deleted) { -- in->deleted = 1; -- deleted = 1; -- in->myDev->nDeletedFiles++; -- yaffs_SoftDeleteFile(in); -- } -- return deleted ? YAFFS_OK : YAFFS_FAIL; -- } else { -- /* The file has no data chunks so we toss it immediately */ -- yaffs_FreeTnode(in->myDev, in->variant.fileVariant.top); -- in->variant.fileVariant.top = NULL; -- yaffs_DoGenericObjectDeletion(in); -- -- return YAFFS_OK; -- } --} -+/*------------------------ Short Operations Cache ---------------------------------------- -+ * In many situations where there is no high level buffering (eg WinCE) a lot of -+ * reads might be short sequential reads, and a lot of writes may be short -+ * sequential writes. eg. scanning/writing a jpeg file. -+ * In these cases, a short read/write cache can provide a huge perfomance benefit -+ * with dumb-as-a-rock code. -+ * In Linux, the page cache provides read buffering aand the short op cache provides write -+ * buffering. -+ * -+ * There are a limited number (~10) of cache chunks per device so that we don't -+ * need a very intelligent search. -+ */ - --static int yaffs_DeleteDirectory(yaffs_Object *in) -+static int yaffs_obj_cache_dirty(yaffs_obj_t *obj) - { -- /* First check that the directory is empty. */ -- if (ylist_empty(&in->variant.directoryVariant.children)) -- return yaffs_DoGenericObjectDeletion(in); -+ yaffs_dev_t *dev = obj->my_dev; -+ int i; -+ yaffs_cache_t *cache; -+ int nCaches = obj->my_dev->param.n_caches; - -- return YAFFS_FAIL; -+ for (i = 0; i < nCaches; i++) { -+ cache = &dev->cache[i]; -+ if (cache->object == obj && -+ cache->dirty) -+ return 1; -+ } - -+ return 0; - } - --static int yaffs_DeleteSymLink(yaffs_Object *in) --{ -- YFREE(in->variant.symLinkVariant.alias); -- -- return yaffs_DoGenericObjectDeletion(in); --} - --static int yaffs_DeleteHardLink(yaffs_Object *in) -+static void yaffs_flush_file_cache(yaffs_obj_t *obj) - { -- /* remove this hardlink from the list assocaited with the equivalent -- * object -- */ -- ylist_del_init(&in->hardLinks); -- return yaffs_DoGenericObjectDeletion(in); --} -+ yaffs_dev_t *dev = obj->my_dev; -+ int lowest = -99; /* Stop compiler whining. */ -+ int i; -+ yaffs_cache_t *cache; -+ int chunkWritten = 0; -+ int nCaches = obj->my_dev->param.n_caches; - --int yaffs_DeleteObject(yaffs_Object *obj) --{ --int retVal = -1; -- switch (obj->variantType) { -- case YAFFS_OBJECT_TYPE_FILE: -- retVal = yaffs_DeleteFile(obj); -- break; -- case YAFFS_OBJECT_TYPE_DIRECTORY: -- return yaffs_DeleteDirectory(obj); -- break; -- case YAFFS_OBJECT_TYPE_SYMLINK: -- retVal = yaffs_DeleteSymLink(obj); -- break; -- case YAFFS_OBJECT_TYPE_HARDLINK: -- retVal = yaffs_DeleteHardLink(obj); -- break; -- case YAFFS_OBJECT_TYPE_SPECIAL: -- retVal = yaffs_DoGenericObjectDeletion(obj); -- break; -- case YAFFS_OBJECT_TYPE_UNKNOWN: -- retVal = 0; -- break; /* should not happen. */ -- } -+ if (nCaches > 0) { -+ do { -+ cache = NULL; - -- return retVal; --} -+ /* Find the dirty cache for this object with the lowest chunk id. */ -+ for (i = 0; i < nCaches; i++) { -+ if (dev->cache[i].object == obj && -+ dev->cache[i].dirty) { -+ if (!cache -+ || dev->cache[i].chunk_id < -+ lowest) { -+ cache = &dev->cache[i]; -+ lowest = cache->chunk_id; -+ } -+ } -+ } - --static int yaffs_UnlinkWorker(yaffs_Object *obj) --{ -+ if (cache && !cache->locked) { -+ /* Write it out and free it up */ - -- int immediateDeletion = 0; -+ chunkWritten = -+ yaffs_wr_data_obj(cache->object, -+ cache->chunk_id, -+ cache->data, -+ cache->n_bytes, -+ 1); -+ cache->dirty = 0; -+ cache->object = NULL; -+ } - --#ifdef __KERNEL__ -- if (!obj->myInode) -- immediateDeletion = 1; --#else -- if (obj->inUse <= 0) -- immediateDeletion = 1; --#endif -+ } while (cache && chunkWritten > 0); - -- if (obj->variantType == YAFFS_OBJECT_TYPE_HARDLINK) { -- return yaffs_DeleteHardLink(obj); -- } else if (!ylist_empty(&obj->hardLinks)) { -- /* Curve ball: We're unlinking an object that has a hardlink. -- * -- * This problem arises because we are not strictly following -- * The Linux link/inode model. -- * -- * We can't really delete the object. -- * Instead, we do the following: -- * - Select a hardlink. -- * - Unhook it from the hard links -- * - Unhook it from its parent directory (so that the rename can work) -- * - Rename the object to the hardlink's name. -- * - Delete the hardlink -- */ -+ if (cache) { -+ /* Hoosterman, disk full while writing cache out. */ -+ T(YAFFS_TRACE_ERROR, -+ (TSTR("yaffs tragedy: no space during cache write" TENDSTR))); - -- yaffs_Object *hl; -- int retVal; -- YCHAR name[YAFFS_MAX_NAME_LENGTH + 1]; -+ } -+ } - -- hl = ylist_entry(obj->hardLinks.next, yaffs_Object, hardLinks); -+} - -- ylist_del_init(&hl->hardLinks); -- ylist_del_init(&hl->siblings); -+/*yaffs_flush_whole_cache(dev) -+ * -+ * -+ */ - -- yaffs_GetObjectName(hl, name, YAFFS_MAX_NAME_LENGTH + 1); -+void yaffs_flush_whole_cache(yaffs_dev_t *dev) -+{ -+ yaffs_obj_t *obj; -+ int nCaches = dev->param.n_caches; -+ int i; - -- retVal = yaffs_ChangeObjectName(obj, hl->parent, name, 0, 0); -+ /* Find a dirty object in the cache and flush it... -+ * until there are no further dirty objects. -+ */ -+ do { -+ obj = NULL; -+ for (i = 0; i < nCaches && !obj; i++) { -+ if (dev->cache[i].object && -+ dev->cache[i].dirty) -+ obj = dev->cache[i].object; - -- if (retVal == YAFFS_OK) -- retVal = yaffs_DoGenericObjectDeletion(hl); -+ } -+ if (obj) -+ yaffs_flush_file_cache(obj); - -- return retVal; -+ } while (obj); - -- } else if (immediateDeletion) { -- switch (obj->variantType) { -- case YAFFS_OBJECT_TYPE_FILE: -- return yaffs_DeleteFile(obj); -- break; -- case YAFFS_OBJECT_TYPE_DIRECTORY: -- return yaffs_DeleteDirectory(obj); -- break; -- case YAFFS_OBJECT_TYPE_SYMLINK: -- return yaffs_DeleteSymLink(obj); -- break; -- case YAFFS_OBJECT_TYPE_SPECIAL: -- return yaffs_DoGenericObjectDeletion(obj); -- break; -- case YAFFS_OBJECT_TYPE_HARDLINK: -- case YAFFS_OBJECT_TYPE_UNKNOWN: -- default: -- return YAFFS_FAIL; -- } -- } else -- return yaffs_ChangeObjectName(obj, obj->myDev->unlinkedDir, -- _Y("unlinked"), 0, 0); - } - - --static int yaffs_UnlinkObject(yaffs_Object *obj) -+/* Grab us a cache chunk for use. -+ * First look for an empty one. -+ * Then look for the least recently used non-dirty one. -+ * Then look for the least recently used dirty one...., flush and look again. -+ */ -+static yaffs_cache_t *yaffs_grab_chunk_worker(yaffs_dev_t *dev) - { -+ int i; - -- if (obj && obj->unlinkAllowed) -- return yaffs_UnlinkWorker(obj); -- -- return YAFFS_FAIL; -- --} --int yaffs_Unlink(yaffs_Object *dir, const YCHAR *name) --{ -- yaffs_Object *obj; -+ if (dev->param.n_caches > 0) { -+ for (i = 0; i < dev->param.n_caches; i++) { -+ if (!dev->cache[i].object) -+ return &dev->cache[i]; -+ } -+ } - -- obj = yaffs_FindObjectByName(dir, name); -- return yaffs_UnlinkObject(obj); -+ return NULL; - } - --/*----------------------- Initialisation Scanning ---------------------- */ -- --static void yaffs_HandleShadowedObject(yaffs_Device *dev, int objId, -- int backwardScanning) -+static yaffs_cache_t *yaffs_grab_chunk_cache(yaffs_dev_t *dev) - { -- yaffs_Object *obj; -+ yaffs_cache_t *cache; -+ yaffs_obj_t *theObj; -+ int usage; -+ int i; -+ int pushout; - -- if (!backwardScanning) { -- /* Handle YAFFS1 forward scanning case -- * For YAFFS1 we always do the deletion -- */ -+ if (dev->param.n_caches > 0) { -+ /* Try find a non-dirty one... */ - -- } else { -- /* Handle YAFFS2 case (backward scanning) -- * If the shadowed object exists then ignore. -- */ -- if (yaffs_FindObjectByNumber(dev, objId)) -- return; -- } -+ cache = yaffs_grab_chunk_worker(dev); - -- /* Let's create it (if it does not exist) assuming it is a file so that it can do shrinking etc. -- * We put it in unlinked dir to be cleaned up after the scanning -- */ -- obj = -- yaffs_FindOrCreateObjectByNumber(dev, objId, -- YAFFS_OBJECT_TYPE_FILE); -- if (!obj) -- return; -- yaffs_AddObjectToDirectory(dev->unlinkedDir, obj); -- obj->variant.fileVariant.shrinkSize = 0; -- obj->valid = 1; /* So that we don't read any other info for this file */ -+ if (!cache) { -+ /* They were all dirty, find the last recently used object and flush -+ * its cache, then find again. -+ * NB what's here is not very accurate, we actually flush the object -+ * the last recently used page. -+ */ - --} -+ /* With locking we can't assume we can use entry zero */ - --typedef struct { -- int seq; -- int block; --} yaffs_BlockIndex; -+ theObj = NULL; -+ usage = -1; -+ cache = NULL; -+ pushout = -1; - -+ for (i = 0; i < dev->param.n_caches; i++) { -+ if (dev->cache[i].object && -+ !dev->cache[i].locked && -+ (dev->cache[i].last_use < usage || !cache)) { -+ usage = dev->cache[i].last_use; -+ theObj = dev->cache[i].object; -+ cache = &dev->cache[i]; -+ pushout = i; -+ } -+ } - --static void yaffs_HardlinkFixup(yaffs_Device *dev, yaffs_Object *hardList) --{ -- yaffs_Object *hl; -- yaffs_Object *in; -+ if (!cache || cache->dirty) { -+ /* Flush and try again */ -+ yaffs_flush_file_cache(theObj); -+ cache = yaffs_grab_chunk_worker(dev); -+ } - -- while (hardList) { -- hl = hardList; -- hardList = (yaffs_Object *) (hardList->hardLinks.next); -+ } -+ return cache; -+ } else -+ return NULL; - -- in = yaffs_FindObjectByNumber(dev, -- hl->variant.hardLinkVariant. -- equivalentObjectId); -+} - -- if (in) { -- /* Add the hardlink pointers */ -- hl->variant.hardLinkVariant.equivalentObject = in; -- ylist_add(&hl->hardLinks, &in->hardLinks); -- } else { -- /* Todo Need to report/handle this better. -- * Got a problem... hardlink to a non-existant object -- */ -- hl->variant.hardLinkVariant.equivalentObject = NULL; -- YINIT_LIST_HEAD(&hl->hardLinks); -+/* Find a cached chunk */ -+static yaffs_cache_t *yaffs_find_chunk_cache(const yaffs_obj_t *obj, -+ int chunk_id) -+{ -+ yaffs_dev_t *dev = obj->my_dev; -+ int i; -+ if (dev->param.n_caches > 0) { -+ for (i = 0; i < dev->param.n_caches; i++) { -+ if (dev->cache[i].object == obj && -+ dev->cache[i].chunk_id == chunk_id) { -+ dev->cache_hits++; - -+ return &dev->cache[i]; -+ } - } - } -+ return NULL; - } - -+/* Mark the chunk for the least recently used algorithym */ -+static void yaffs_use_cache(yaffs_dev_t *dev, yaffs_cache_t *cache, -+ int isAWrite) -+{ -+ -+ if (dev->param.n_caches > 0) { -+ if (dev->cache_last_use < 0 || dev->cache_last_use > 100000000) { -+ /* Reset the cache usages */ -+ int i; -+ for (i = 1; i < dev->param.n_caches; i++) -+ dev->cache[i].last_use = 0; - -+ dev->cache_last_use = 0; -+ } - -+ dev->cache_last_use++; - -+ cache->last_use = dev->cache_last_use; - --static int ybicmp(const void *a, const void *b) --{ -- register int aseq = ((yaffs_BlockIndex *)a)->seq; -- register int bseq = ((yaffs_BlockIndex *)b)->seq; -- register int ablock = ((yaffs_BlockIndex *)a)->block; -- register int bblock = ((yaffs_BlockIndex *)b)->block; -- if (aseq == bseq) -- return ablock - bblock; -- else -- return aseq - bseq; -+ if (isAWrite) -+ cache->dirty = 1; -+ } - } - -+/* Invalidate a single cache page. -+ * Do this when a whole page gets written, -+ * ie the short cache for this page is no longer valid. -+ */ -+static void yaffs_invalidate_chunk_cache(yaffs_obj_t *object, int chunk_id) -+{ -+ if (object->my_dev->param.n_caches > 0) { -+ yaffs_cache_t *cache = yaffs_find_chunk_cache(object, chunk_id); - --struct yaffs_ShadowFixerStruct { -- int objectId; -- int shadowedId; -- struct yaffs_ShadowFixerStruct *next; --}; -- -+ if (cache) -+ cache->object = NULL; -+ } -+} - --static void yaffs_StripDeletedObjects(yaffs_Device *dev) -+/* Invalidate all the cache pages associated with this object -+ * Do this whenever ther file is deleted or resized. -+ */ -+static void yaffs_invalidate_whole_cache(yaffs_obj_t *in) - { -- /* -- * Sort out state of unlinked and deleted objects after scanning. -- */ -- struct ylist_head *i; -- struct ylist_head *n; -- yaffs_Object *l; -+ int i; -+ yaffs_dev_t *dev = in->my_dev; - -- /* Soft delete all the unlinked files */ -- ylist_for_each_safe(i, n, -- &dev->unlinkedDir->variant.directoryVariant.children) { -- if (i) { -- l = ylist_entry(i, yaffs_Object, siblings); -- yaffs_DeleteObject(l); -+ if (dev->param.n_caches > 0) { -+ /* Invalidate it. */ -+ for (i = 0; i < dev->param.n_caches; i++) { -+ if (dev->cache[i].object == in) -+ dev->cache[i].object = NULL; - } - } -+} - -- ylist_for_each_safe(i, n, -- &dev->deletedDir->variant.directoryVariant.children) { -- if (i) { -- l = ylist_entry(i, yaffs_Object, siblings); -- yaffs_DeleteObject(l); -- } -- } - --} -+/*--------------------- File read/write ------------------------ -+ * Read and write have very similar structures. -+ * In general the read/write has three parts to it -+ * An incomplete chunk to start with (if the read/write is not chunk-aligned) -+ * Some complete chunks -+ * An incomplete chunk to end off with -+ * -+ * Curve-balls: the first chunk might also be the last chunk. -+ */ - --static int yaffs_Scan(yaffs_Device *dev) -+int yaffs_file_rd(yaffs_obj_t *in, __u8 *buffer, loff_t offset, -+ int n_bytes) - { -- yaffs_ExtendedTags tags; -- int blk; -- int blockIterator; -- int startIterator; -- int endIterator; -- int result; - - int chunk; -- int c; -- int deleted; -- yaffs_BlockState state; -- yaffs_Object *hardList = NULL; -- yaffs_BlockInfo *bi; -- __u32 sequenceNumber; -- yaffs_ObjectHeader *oh; -- yaffs_Object *in; -- yaffs_Object *parent; -+ __u32 start; -+ int nToCopy; -+ int n = n_bytes; -+ int nDone = 0; -+ yaffs_cache_t *cache; - -- int alloc_failed = 0; -+ yaffs_dev_t *dev; - -- struct yaffs_ShadowFixerStruct *shadowFixerList = NULL; -+ dev = in->my_dev; - -+ while (n > 0) { -+ /* chunk = offset / dev->data_bytes_per_chunk + 1; */ -+ /* start = offset % dev->data_bytes_per_chunk; */ -+ yaffs_addr_to_chunk(dev, offset, &chunk, &start); -+ chunk++; - -- __u8 *chunkData; -+ /* OK now check for the curveball where the start and end are in -+ * the same chunk. -+ */ -+ if ((start + n) < dev->data_bytes_per_chunk) -+ nToCopy = n; -+ else -+ nToCopy = dev->data_bytes_per_chunk - start; - -+ cache = yaffs_find_chunk_cache(in, chunk); - -+ /* If the chunk is already in the cache or it is less than a whole chunk -+ * or we're using inband tags then use the cache (if there is caching) -+ * else bypass the cache. -+ */ -+ if (cache || nToCopy != dev->data_bytes_per_chunk || dev->param.inband_tags) { -+ if (dev->param.n_caches > 0) { - -- T(YAFFS_TRACE_SCAN, -- (TSTR("yaffs_Scan starts intstartblk %d intendblk %d..." TENDSTR), -- dev->internalStartBlock, dev->internalEndBlock)); -+ /* If we can't find the data in the cache, then load it up. */ - -- chunkData = yaffs_GetTempBuffer(dev, __LINE__); -+ if (!cache) { -+ cache = yaffs_grab_chunk_cache(in->my_dev); -+ cache->object = in; -+ cache->chunk_id = chunk; -+ cache->dirty = 0; -+ cache->locked = 0; -+ yaffs_rd_data_obj(in, chunk, -+ cache-> -+ data); -+ cache->n_bytes = 0; -+ } - -- dev->sequenceNumber = YAFFS_LOWEST_SEQUENCE_NUMBER; -+ yaffs_use_cache(dev, cache, 0); - -- /* Scan all the blocks to determine their state */ -- for (blk = dev->internalStartBlock; blk <= dev->internalEndBlock; blk++) { -- bi = yaffs_GetBlockInfo(dev, blk); -- yaffs_ClearChunkBits(dev, blk); -- bi->pagesInUse = 0; -- bi->softDeletions = 0; -+ cache->locked = 1; - -- yaffs_QueryInitialBlockState(dev, blk, &state, &sequenceNumber); - -- bi->blockState = state; -- bi->sequenceNumber = sequenceNumber; -+ memcpy(buffer, &cache->data[start], nToCopy); - -- if (bi->sequenceNumber == YAFFS_SEQUENCE_BAD_BLOCK) -- bi->blockState = state = YAFFS_BLOCK_STATE_DEAD; -+ cache->locked = 0; -+ } else { -+ /* Read into the local buffer then copy..*/ - -- T(YAFFS_TRACE_SCAN_DEBUG, -- (TSTR("Block scanning block %d state %d seq %d" TENDSTR), blk, -- state, sequenceNumber)); -+ __u8 *localBuffer = -+ yaffs_get_temp_buffer(dev, __LINE__); -+ yaffs_rd_data_obj(in, chunk, -+ localBuffer); - -- if (state == YAFFS_BLOCK_STATE_DEAD) { -- T(YAFFS_TRACE_BAD_BLOCKS, -- (TSTR("block %d is bad" TENDSTR), blk)); -- } else if (state == YAFFS_BLOCK_STATE_EMPTY) { -- T(YAFFS_TRACE_SCAN_DEBUG, -- (TSTR("Block empty " TENDSTR))); -- dev->nErasedBlocks++; -- dev->nFreeChunks += dev->nChunksPerBlock; -- } -- } -+ memcpy(buffer, &localBuffer[start], nToCopy); - -- startIterator = dev->internalStartBlock; -- endIterator = dev->internalEndBlock; - -- /* For each block.... */ -- for (blockIterator = startIterator; !alloc_failed && blockIterator <= endIterator; -- blockIterator++) { -+ yaffs_release_temp_buffer(dev, localBuffer, -+ __LINE__); -+ } - -- YYIELD(); -+ } else { - -- YYIELD(); -+ /* A full chunk. Read directly into the supplied buffer. */ -+ yaffs_rd_data_obj(in, chunk, buffer); - -- blk = blockIterator; -+ } - -- bi = yaffs_GetBlockInfo(dev, blk); -- state = bi->blockState; -+ n -= nToCopy; -+ offset += nToCopy; -+ buffer += nToCopy; -+ nDone += nToCopy; - -- deleted = 0; -+ } - -- /* For each chunk in each block that needs scanning....*/ -- for (c = 0; !alloc_failed && c < dev->nChunksPerBlock && -- state == YAFFS_BLOCK_STATE_NEEDS_SCANNING; c++) { -- /* Read the tags and decide what to do */ -- chunk = blk * dev->nChunksPerBlock + c; -+ return nDone; -+} - -- result = yaffs_ReadChunkWithTagsFromNAND(dev, chunk, NULL, -- &tags); -+int yaffs_do_file_wr(yaffs_obj_t *in, const __u8 *buffer, loff_t offset, -+ int n_bytes, int write_trhrough) -+{ - -- /* Let's have a good look at this chunk... */ -+ int chunk; -+ __u32 start; -+ int nToCopy; -+ int n = n_bytes; -+ int nDone = 0; -+ int nToWriteBack; -+ int startOfWrite = offset; -+ int chunkWritten = 0; -+ __u32 n_bytesRead; -+ __u32 chunkStart; - -- if (tags.eccResult == YAFFS_ECC_RESULT_UNFIXED || tags.chunkDeleted) { -- /* YAFFS1 only... -- * A deleted chunk -- */ -- deleted++; -- dev->nFreeChunks++; -- /*T((" %d %d deleted\n",blk,c)); */ -- } else if (!tags.chunkUsed) { -- /* An unassigned chunk in the block -- * This means that either the block is empty or -- * this is the one being allocated from -- */ -+ yaffs_dev_t *dev; - -- if (c == 0) { -- /* We're looking at the first chunk in the block so the block is unused */ -- state = YAFFS_BLOCK_STATE_EMPTY; -- dev->nErasedBlocks++; -- } else { -- /* this is the block being allocated from */ -- T(YAFFS_TRACE_SCAN, -- (TSTR -- (" Allocating from %d %d" TENDSTR), -- blk, c)); -- state = YAFFS_BLOCK_STATE_ALLOCATING; -- dev->allocationBlock = blk; -- dev->allocationPage = c; -- dev->allocationBlockFinder = blk; -- /* Set it to here to encourage the allocator to go forth from here. */ -+ dev = in->my_dev; - -- } -+ while (n > 0 && chunkWritten >= 0) { -+ yaffs_addr_to_chunk(dev, offset, &chunk, &start); - -- dev->nFreeChunks += (dev->nChunksPerBlock - c); -- } else if (tags.chunkId > 0) { -- /* chunkId > 0 so it is a data chunk... */ -- unsigned int endpos; -- -- yaffs_SetChunkBit(dev, blk, c); -- bi->pagesInUse++; -- -- in = yaffs_FindOrCreateObjectByNumber(dev, -- tags. -- objectId, -- YAFFS_OBJECT_TYPE_FILE); -- /* PutChunkIntoFile checks for a clash (two data chunks with -- * the same chunkId). -- */ -+ if (chunk * dev->data_bytes_per_chunk + start != offset || -+ start >= dev->data_bytes_per_chunk) { -+ T(YAFFS_TRACE_ERROR, ( -+ TSTR("AddrToChunk of offset %d gives chunk %d start %d" -+ TENDSTR), -+ (int)offset, chunk, start)); -+ } -+ chunk++; /* File pos to chunk in file offset */ - -- if (!in) -- alloc_failed = 1; -+ /* OK now check for the curveball where the start and end are in -+ * the same chunk. -+ */ - -- if (in) { -- if (!yaffs_PutChunkIntoFile(in, tags.chunkId, chunk, 1)) -- alloc_failed = 1; -- } -+ if ((start + n) < dev->data_bytes_per_chunk) { -+ nToCopy = n; - -- endpos = -- (tags.chunkId - 1) * dev->nDataBytesPerChunk + -- tags.byteCount; -- if (in && -- in->variantType == YAFFS_OBJECT_TYPE_FILE -- && in->variant.fileVariant.scannedFileSize < -- endpos) { -- in->variant.fileVariant. -- scannedFileSize = endpos; -- if (!dev->useHeaderFileSize) { -- in->variant.fileVariant. -- fileSize = -- in->variant.fileVariant. -- scannedFileSize; -- } -+ /* Now folks, to calculate how many bytes to write back.... -+ * If we're overwriting and not writing to then end of file then -+ * we need to write back as much as was there before. -+ */ - -- } -- /* T((" %d %d data %d %d\n",blk,c,tags.objectId,tags.chunkId)); */ -- } else { -- /* chunkId == 0, so it is an ObjectHeader. -- * Thus, we read in the object header and make the object -- */ -- yaffs_SetChunkBit(dev, blk, c); -- bi->pagesInUse++; -+ chunkStart = ((chunk - 1) * dev->data_bytes_per_chunk); - -- result = yaffs_ReadChunkWithTagsFromNAND(dev, chunk, -- chunkData, -- NULL); -- -- oh = (yaffs_ObjectHeader *) chunkData; -- -- in = yaffs_FindObjectByNumber(dev, -- tags.objectId); -- if (in && in->variantType != oh->type) { -- /* This should not happen, but somehow -- * Wev'e ended up with an objectId that has been reused but not yet -- * deleted, and worse still it has changed type. Delete the old object. -- */ -+ if (chunkStart > in->variant.file_variant.file_size) -+ n_bytesRead = 0; /* Past end of file */ -+ else -+ n_bytesRead = in->variant.file_variant.file_size - chunkStart; - -- yaffs_DeleteObject(in); -+ if (n_bytesRead > dev->data_bytes_per_chunk) -+ n_bytesRead = dev->data_bytes_per_chunk; - -- in = 0; -- } -+ nToWriteBack = -+ (n_bytesRead > -+ (start + n)) ? n_bytesRead : (start + n); - -- in = yaffs_FindOrCreateObjectByNumber(dev, -- tags. -- objectId, -- oh->type); -- -- if (!in) -- alloc_failed = 1; -- -- if (in && oh->shadowsObject > 0) { -- -- struct yaffs_ShadowFixerStruct *fixer; -- fixer = YMALLOC(sizeof(struct yaffs_ShadowFixerStruct)); -- if (fixer) { -- fixer->next = shadowFixerList; -- shadowFixerList = fixer; -- fixer->objectId = tags.objectId; -- fixer->shadowedId = oh->shadowsObject; -- } -+ if (nToWriteBack < 0 || nToWriteBack > dev->data_bytes_per_chunk) -+ YBUG(); -+ -+ } else { -+ nToCopy = dev->data_bytes_per_chunk - start; -+ nToWriteBack = dev->data_bytes_per_chunk; -+ } -+ -+ if (nToCopy != dev->data_bytes_per_chunk || dev->param.inband_tags) { -+ /* An incomplete start or end chunk (or maybe both start and end chunk), -+ * or we're using inband tags, so we want to use the cache buffers. -+ */ -+ if (dev->param.n_caches > 0) { -+ yaffs_cache_t *cache; -+ /* If we can't find the data in the cache, then load the cache */ -+ cache = yaffs_find_chunk_cache(in, chunk); - -+ if (!cache -+ && yaffs_check_alloc_available(dev, 1)) { -+ cache = yaffs_grab_chunk_cache(dev); -+ cache->object = in; -+ cache->chunk_id = chunk; -+ cache->dirty = 0; -+ cache->locked = 0; -+ yaffs_rd_data_obj(in, chunk, -+ cache->data); -+ } else if (cache && -+ !cache->dirty && -+ !yaffs_check_alloc_available(dev, 1)) { -+ /* Drop the cache if it was a read cache item and -+ * no space check has been made for it. -+ */ -+ cache = NULL; - } - -- if (in && in->valid) { -- /* We have already filled this one. We have a duplicate and need to resolve it. */ -+ if (cache) { -+ yaffs_use_cache(dev, cache, 1); -+ cache->locked = 1; - -- unsigned existingSerial = in->serial; -- unsigned newSerial = tags.serialNumber; - -- if (((existingSerial + 1) & 3) == newSerial) { -- /* Use new one - destroy the exisiting one */ -- yaffs_DeleteChunk(dev, -- in->hdrChunk, -- 1, __LINE__); -- in->valid = 0; -- } else { -- /* Use existing - destroy this one. */ -- yaffs_DeleteChunk(dev, chunk, 1, -- __LINE__); -+ memcpy(&cache->data[start], buffer, -+ nToCopy); -+ -+ -+ cache->locked = 0; -+ cache->n_bytes = nToWriteBack; -+ -+ if (write_trhrough) { -+ chunkWritten = -+ yaffs_wr_data_obj -+ (cache->object, -+ cache->chunk_id, -+ cache->data, cache->n_bytes, -+ 1); -+ cache->dirty = 0; - } -+ -+ } else { -+ chunkWritten = -1; /* fail the write */ - } -+ } else { -+ /* An incomplete start or end chunk (or maybe both start and end chunk) -+ * Read into the local buffer then copy, then copy over and write back. -+ */ - -- if (in && !in->valid && -- (tags.objectId == YAFFS_OBJECTID_ROOT || -- tags.objectId == YAFFS_OBJECTID_LOSTNFOUND)) { -- /* We only load some info, don't fiddle with directory structure */ -- in->valid = 1; -- in->variantType = oh->type; -+ __u8 *localBuffer = -+ yaffs_get_temp_buffer(dev, __LINE__); - -- in->yst_mode = oh->yst_mode; --#ifdef CONFIG_YAFFS_WINCE -- in->win_atime[0] = oh->win_atime[0]; -- in->win_ctime[0] = oh->win_ctime[0]; -- in->win_mtime[0] = oh->win_mtime[0]; -- in->win_atime[1] = oh->win_atime[1]; -- in->win_ctime[1] = oh->win_ctime[1]; -- in->win_mtime[1] = oh->win_mtime[1]; --#else -- in->yst_uid = oh->yst_uid; -- in->yst_gid = oh->yst_gid; -- in->yst_atime = oh->yst_atime; -- in->yst_mtime = oh->yst_mtime; -- in->yst_ctime = oh->yst_ctime; -- in->yst_rdev = oh->yst_rdev; --#endif -- in->hdrChunk = chunk; -- in->serial = tags.serialNumber; -+ yaffs_rd_data_obj(in, chunk, -+ localBuffer); - -- } else if (in && !in->valid) { -- /* we need to load this info */ - -- in->valid = 1; -- in->variantType = oh->type; - -- in->yst_mode = oh->yst_mode; --#ifdef CONFIG_YAFFS_WINCE -- in->win_atime[0] = oh->win_atime[0]; -- in->win_ctime[0] = oh->win_ctime[0]; -- in->win_mtime[0] = oh->win_mtime[0]; -- in->win_atime[1] = oh->win_atime[1]; -- in->win_ctime[1] = oh->win_ctime[1]; -- in->win_mtime[1] = oh->win_mtime[1]; --#else -- in->yst_uid = oh->yst_uid; -- in->yst_gid = oh->yst_gid; -- in->yst_atime = oh->yst_atime; -- in->yst_mtime = oh->yst_mtime; -- in->yst_ctime = oh->yst_ctime; -- in->yst_rdev = oh->yst_rdev; --#endif -- in->hdrChunk = chunk; -- in->serial = tags.serialNumber; -+ memcpy(&localBuffer[start], buffer, nToCopy); - -- yaffs_SetObjectName(in, oh->name); -- in->dirty = 0; -+ chunkWritten = -+ yaffs_wr_data_obj(in, chunk, -+ localBuffer, -+ nToWriteBack, -+ 0); - -- /* directory stuff... -- * hook up to parent -- */ -+ yaffs_release_temp_buffer(dev, localBuffer, -+ __LINE__); - -- parent = -- yaffs_FindOrCreateObjectByNumber -- (dev, oh->parentObjectId, -- YAFFS_OBJECT_TYPE_DIRECTORY); -- if (!parent) -- alloc_failed = 1; -- if (parent && parent->variantType == -- YAFFS_OBJECT_TYPE_UNKNOWN) { -- /* Set up as a directory */ -- parent->variantType = -- YAFFS_OBJECT_TYPE_DIRECTORY; -- YINIT_LIST_HEAD(&parent->variant. -- directoryVariant. -- children); -- } else if (!parent || parent->variantType != -- YAFFS_OBJECT_TYPE_DIRECTORY) { -- /* Hoosterman, another problem.... -- * We're trying to use a non-directory as a directory -- */ -+ } - -- T(YAFFS_TRACE_ERROR, -- (TSTR -- ("yaffs tragedy: attempting to use non-directory as a directory in scan. Put in lost+found." -- TENDSTR))); -- parent = dev->lostNFoundDir; -- } -+ } else { -+ /* A full chunk. Write directly from the supplied buffer. */ - -- yaffs_AddObjectToDirectory(parent, in); - -- if (0 && (parent == dev->deletedDir || -- parent == dev->unlinkedDir)) { -- in->deleted = 1; /* If it is unlinked at start up then it wants deleting */ -- dev->nDeletedFiles++; -- } -- /* Note re hardlinks. -- * Since we might scan a hardlink before its equivalent object is scanned -- * we put them all in a list. -- * After scanning is complete, we should have all the objects, so we run through this -- * list and fix up all the chains. -- */ - -- switch (in->variantType) { -- case YAFFS_OBJECT_TYPE_UNKNOWN: -- /* Todo got a problem */ -- break; -- case YAFFS_OBJECT_TYPE_FILE: -- if (dev->useHeaderFileSize) -- -- in->variant.fileVariant. -- fileSize = -- oh->fileSize; -- -- break; -- case YAFFS_OBJECT_TYPE_HARDLINK: -- in->variant.hardLinkVariant. -- equivalentObjectId = -- oh->equivalentObjectId; -- in->hardLinks.next = -- (struct ylist_head *) -- hardList; -- hardList = in; -- break; -- case YAFFS_OBJECT_TYPE_DIRECTORY: -- /* Do nothing */ -- break; -- case YAFFS_OBJECT_TYPE_SPECIAL: -- /* Do nothing */ -- break; -- case YAFFS_OBJECT_TYPE_SYMLINK: -- in->variant.symLinkVariant.alias = -- yaffs_CloneString(oh->alias); -- if (!in->variant.symLinkVariant.alias) -- alloc_failed = 1; -- break; -- } -+ chunkWritten = -+ yaffs_wr_data_obj(in, chunk, buffer, -+ dev->data_bytes_per_chunk, -+ 0); - --/* -- if (parent == dev->deletedDir) { -- yaffs_DestroyObject(in); -- bi->hasShrinkHeader = 1; -- } --*/ -- } -- } -+ /* Since we've overwritten the cached data, we better invalidate it. */ -+ yaffs_invalidate_chunk_cache(in, chunk); - } - -- if (state == YAFFS_BLOCK_STATE_NEEDS_SCANNING) { -- /* If we got this far while scanning, then the block is fully allocated.*/ -- state = YAFFS_BLOCK_STATE_FULL; -+ if (chunkWritten >= 0) { -+ n -= nToCopy; -+ offset += nToCopy; -+ buffer += nToCopy; -+ nDone += nToCopy; - } - -- bi->blockState = state; -+ } - -- /* Now let's see if it was dirty */ -- if (bi->pagesInUse == 0 && -- !bi->hasShrinkHeader && -- bi->blockState == YAFFS_BLOCK_STATE_FULL) { -- yaffs_BlockBecameDirty(dev, blk); -- } -+ /* Update file object */ - -- } -+ if ((startOfWrite + nDone) > in->variant.file_variant.file_size) -+ in->variant.file_variant.file_size = (startOfWrite + nDone); - -+ in->dirty = 1; - -- /* Ok, we've done all the scanning. -- * Fix up the hard link chains. -- * We should now have scanned all the objects, now it's time to add these -- * hardlinks. -- */ -+ return nDone; -+} - -- yaffs_HardlinkFixup(dev, hardList); -+int yaffs_wr_file(yaffs_obj_t *in, const __u8 *buffer, loff_t offset, -+ int n_bytes, int write_trhrough) -+{ -+ yaffs2_handle_hole(in,offset); -+ return yaffs_do_file_wr(in,buffer,offset,n_bytes,write_trhrough); -+} - -- /* Fix up any shadowed objects */ -- { -- struct yaffs_ShadowFixerStruct *fixer; -- yaffs_Object *obj; -- -- while (shadowFixerList) { -- fixer = shadowFixerList; -- shadowFixerList = fixer->next; -- /* Complete the rename transaction by deleting the shadowed object -- * then setting the object header to unshadowed. -- */ -- obj = yaffs_FindObjectByNumber(dev, fixer->shadowedId); -- if (obj) -- yaffs_DeleteObject(obj); - -- obj = yaffs_FindObjectByNumber(dev, fixer->objectId); - -- if (obj) -- yaffs_UpdateObjectHeader(obj, NULL, 1, 0, 0); -+/* ---------------------- File resizing stuff ------------------ */ - -- YFREE(fixer); -- } -- } -+static void yaffs_prune_chunks(yaffs_obj_t *in, int new_size) -+{ - -- yaffs_ReleaseTempBuffer(dev, chunkData, __LINE__); -+ yaffs_dev_t *dev = in->my_dev; -+ int oldFileSize = in->variant.file_variant.file_size; - -- if (alloc_failed) -- return YAFFS_FAIL; -+ int lastDel = 1 + (oldFileSize - 1) / dev->data_bytes_per_chunk; -+ -+ int startDel = 1 + (new_size + dev->data_bytes_per_chunk - 1) / -+ dev->data_bytes_per_chunk; -+ int i; -+ int chunk_id; - -- T(YAFFS_TRACE_SCAN, (TSTR("yaffs_Scan ends" TENDSTR))); -+ /* Delete backwards so that we don't end up with holes if -+ * power is lost part-way through the operation. -+ */ -+ for (i = lastDel; i >= startDel; i--) { -+ /* NB this could be optimised somewhat, -+ * eg. could retrieve the tags and write them without -+ * using yaffs_chunk_del -+ */ - -+ chunk_id = yaffs_find_del_file_chunk(in, i, NULL); -+ if (chunk_id > 0) { -+ if (chunk_id < -+ (dev->internal_start_block * dev->param.chunks_per_block) -+ || chunk_id >= -+ ((dev->internal_end_block + -+ 1) * dev->param.chunks_per_block)) { -+ T(YAFFS_TRACE_ALWAYS, -+ (TSTR("Found daft chunk_id %d for %d" TENDSTR), -+ chunk_id, i)); -+ } else { -+ in->n_data_chunks--; -+ yaffs_chunk_del(dev, chunk_id, 1, __LINE__); -+ } -+ } -+ } - -- return YAFFS_OK; - } - --static void yaffs_CheckObjectDetailsLoaded(yaffs_Object *in) --{ -- __u8 *chunkData; -- yaffs_ObjectHeader *oh; -- yaffs_Device *dev; -- yaffs_ExtendedTags tags; -- int result; -- int alloc_failed = 0; - -- if (!in) -- return; -+void yaffs_resize_file_down( yaffs_obj_t *obj, loff_t new_size) -+{ -+ int newFullChunks; -+ __u32 new_sizeOfPartialChunk; -+ yaffs_dev_t *dev = obj->my_dev; - -- dev = in->myDev; -+ yaffs_addr_to_chunk(dev, new_size, &newFullChunks, &new_sizeOfPartialChunk); - --#if 0 -- T(YAFFS_TRACE_SCAN, (TSTR("details for object %d %s loaded" TENDSTR), -- in->objectId, -- in->lazyLoaded ? "not yet" : "already")); --#endif -+ yaffs_prune_chunks(obj, new_size); - -- if (in->lazyLoaded && in->hdrChunk > 0) { -- in->lazyLoaded = 0; -- chunkData = yaffs_GetTempBuffer(dev, __LINE__); -+ if (new_sizeOfPartialChunk != 0) { -+ int lastChunk = 1 + newFullChunks; -+ __u8 *localBuffer = yaffs_get_temp_buffer(dev, __LINE__); - -- result = yaffs_ReadChunkWithTagsFromNAND(dev, in->hdrChunk, chunkData, &tags); -- oh = (yaffs_ObjectHeader *) chunkData; -+ /* Got to read and rewrite the last chunk with its new size and zero pad */ -+ yaffs_rd_data_obj(obj, lastChunk, localBuffer); -+ memset(localBuffer + new_sizeOfPartialChunk, 0, -+ dev->data_bytes_per_chunk - new_sizeOfPartialChunk); - -- in->yst_mode = oh->yst_mode; --#ifdef CONFIG_YAFFS_WINCE -- in->win_atime[0] = oh->win_atime[0]; -- in->win_ctime[0] = oh->win_ctime[0]; -- in->win_mtime[0] = oh->win_mtime[0]; -- in->win_atime[1] = oh->win_atime[1]; -- in->win_ctime[1] = oh->win_ctime[1]; -- in->win_mtime[1] = oh->win_mtime[1]; --#else -- in->yst_uid = oh->yst_uid; -- in->yst_gid = oh->yst_gid; -- in->yst_atime = oh->yst_atime; -- in->yst_mtime = oh->yst_mtime; -- in->yst_ctime = oh->yst_ctime; -- in->yst_rdev = oh->yst_rdev; -+ yaffs_wr_data_obj(obj, lastChunk, localBuffer, -+ new_sizeOfPartialChunk, 1); - --#endif -- yaffs_SetObjectName(in, oh->name); -+ yaffs_release_temp_buffer(dev, localBuffer, __LINE__); -+ } - -- if (in->variantType == YAFFS_OBJECT_TYPE_SYMLINK) { -- in->variant.symLinkVariant.alias = -- yaffs_CloneString(oh->alias); -- if (!in->variant.symLinkVariant.alias) -- alloc_failed = 1; /* Not returned to caller */ -- } -+ obj->variant.file_variant.file_size = new_size; - -- yaffs_ReleaseTempBuffer(dev, chunkData, __LINE__); -- } -+ yaffs_prune_tree(dev, &obj->variant.file_variant); - } - --static int yaffs_ScanBackwards(yaffs_Device *dev) --{ -- yaffs_ExtendedTags tags; -- int blk; -- int blockIterator; -- int startIterator; -- int endIterator; -- int nBlocksToScan = 0; -- -- int chunk; -- int result; -- int c; -- int deleted; -- yaffs_BlockState state; -- yaffs_Object *hardList = NULL; -- yaffs_BlockInfo *bi; -- __u32 sequenceNumber; -- yaffs_ObjectHeader *oh; -- yaffs_Object *in; -- yaffs_Object *parent; -- int nBlocks = dev->internalEndBlock - dev->internalStartBlock + 1; -- int itsUnlinked; -- __u8 *chunkData; - -- int fileSize; -- int isShrink; -- int foundChunksInBlock; -- int equivalentObjectId; -- int alloc_failed = 0; -+int yaffs_resize_file(yaffs_obj_t *in, loff_t new_size) -+{ -+ yaffs_dev_t *dev = in->my_dev; -+ int oldFileSize = in->variant.file_variant.file_size; - -+ yaffs_flush_file_cache(in); -+ yaffs_invalidate_whole_cache(in); - -- yaffs_BlockIndex *blockIndex = NULL; -- int altBlockIndex = 0; -+ yaffs_check_gc(dev,0); - -- if (!dev->isYaffs2) { -- T(YAFFS_TRACE_SCAN, -- (TSTR("yaffs_ScanBackwards is only for YAFFS2!" TENDSTR))); -+ if (in->variant_type != YAFFS_OBJECT_TYPE_FILE) - return YAFFS_FAIL; -- } - -- T(YAFFS_TRACE_SCAN, -- (TSTR -- ("yaffs_ScanBackwards starts intstartblk %d intendblk %d..." -- TENDSTR), dev->internalStartBlock, dev->internalEndBlock)); -+ if (new_size == oldFileSize) -+ return YAFFS_OK; -+ -+ if(new_size > oldFileSize){ -+ yaffs2_handle_hole(in,new_size); -+ in->variant.file_variant.file_size = new_size; -+ } else { -+ /* new_size < oldFileSize */ -+ yaffs_resize_file_down(in, new_size); -+ } - -+ /* Write a new object header to reflect the resize. -+ * show we've shrunk the file, if need be -+ * Do this only if the file is not in the deleted directories -+ * and is not shadowed. -+ */ -+ if (in->parent && -+ !in->is_shadowed && -+ in->parent->obj_id != YAFFS_OBJECTID_UNLINKED && -+ in->parent->obj_id != YAFFS_OBJECTID_DELETED) -+ yaffs_update_oh(in, NULL, 0, 0, 0, NULL); - -- dev->sequenceNumber = YAFFS_LOWEST_SEQUENCE_NUMBER; - -- blockIndex = YMALLOC(nBlocks * sizeof(yaffs_BlockIndex)); -+ return YAFFS_OK; -+} - -- if (!blockIndex) { -- blockIndex = YMALLOC_ALT(nBlocks * sizeof(yaffs_BlockIndex)); -- altBlockIndex = 1; -- } -+loff_t yaffs_get_file_size(yaffs_obj_t *obj) -+{ -+ YCHAR *alias = NULL; -+ obj = yaffs_get_equivalent_obj(obj); - -- if (!blockIndex) { -- T(YAFFS_TRACE_SCAN, -- (TSTR("yaffs_Scan() could not allocate block index!" TENDSTR))); -- return YAFFS_FAIL; -+ switch (obj->variant_type) { -+ case YAFFS_OBJECT_TYPE_FILE: -+ return obj->variant.file_variant.file_size; -+ case YAFFS_OBJECT_TYPE_SYMLINK: -+ alias = obj->variant.symlink_variant.alias; -+ if(!alias) -+ return 0; -+ return yaffs_strnlen(alias,YAFFS_MAX_ALIAS_LENGTH); -+ default: -+ return 0; - } -+} - -- dev->blocksInCheckpoint = 0; -- -- chunkData = yaffs_GetTempBuffer(dev, __LINE__); -- -- /* Scan all the blocks to determine their state */ -- for (blk = dev->internalStartBlock; blk <= dev->internalEndBlock; blk++) { -- bi = yaffs_GetBlockInfo(dev, blk); -- yaffs_ClearChunkBits(dev, blk); -- bi->pagesInUse = 0; -- bi->softDeletions = 0; -- -- yaffs_QueryInitialBlockState(dev, blk, &state, &sequenceNumber); - -- bi->blockState = state; -- bi->sequenceNumber = sequenceNumber; - -- if (bi->sequenceNumber == YAFFS_SEQUENCE_CHECKPOINT_DATA) -- bi->blockState = state = YAFFS_BLOCK_STATE_CHECKPOINT; -- if (bi->sequenceNumber == YAFFS_SEQUENCE_BAD_BLOCK) -- bi->blockState = state = YAFFS_BLOCK_STATE_DEAD; -+int yaffs_flush_file(yaffs_obj_t *in, int update_time, int data_sync) -+{ -+ int retVal; -+ if (in->dirty) { -+ yaffs_flush_file_cache(in); -+ if(data_sync) /* Only sync data */ -+ retVal=YAFFS_OK; -+ else { -+ if (update_time) { -+#ifdef CONFIG_YAFFS_WINCE -+ yfsd_win_file_time_now(in->win_mtime); -+#else - -- T(YAFFS_TRACE_SCAN_DEBUG, -- (TSTR("Block scanning block %d state %d seq %d" TENDSTR), blk, -- state, sequenceNumber)); -+ in->yst_mtime = Y_CURRENT_TIME; - -+#endif -+ } - -- if (state == YAFFS_BLOCK_STATE_CHECKPOINT) { -- dev->blocksInCheckpoint++; -+ retVal = (yaffs_update_oh(in, NULL, 0, 0, 0, NULL) >= -+ 0) ? YAFFS_OK : YAFFS_FAIL; -+ } -+ } else { -+ retVal = YAFFS_OK; -+ } - -- } else if (state == YAFFS_BLOCK_STATE_DEAD) { -- T(YAFFS_TRACE_BAD_BLOCKS, -- (TSTR("block %d is bad" TENDSTR), blk)); -- } else if (state == YAFFS_BLOCK_STATE_EMPTY) { -- T(YAFFS_TRACE_SCAN_DEBUG, -- (TSTR("Block empty " TENDSTR))); -- dev->nErasedBlocks++; -- dev->nFreeChunks += dev->nChunksPerBlock; -- } else if (state == YAFFS_BLOCK_STATE_NEEDS_SCANNING) { -+ return retVal; - -- /* Determine the highest sequence number */ -- if (sequenceNumber >= YAFFS_LOWEST_SEQUENCE_NUMBER && -- sequenceNumber < YAFFS_HIGHEST_SEQUENCE_NUMBER) { -+} - -- blockIndex[nBlocksToScan].seq = sequenceNumber; -- blockIndex[nBlocksToScan].block = blk; -+static int yaffs_generic_obj_del(yaffs_obj_t *in) -+{ - -- nBlocksToScan++; -+ /* First off, invalidate the file's data in the cache, without flushing. */ -+ yaffs_invalidate_whole_cache(in); - -- if (sequenceNumber >= dev->sequenceNumber) -- dev->sequenceNumber = sequenceNumber; -- } else { -- /* TODO: Nasty sequence number! */ -- T(YAFFS_TRACE_SCAN, -- (TSTR -- ("Block scanning block %d has bad sequence number %d" -- TENDSTR), blk, sequenceNumber)); -+ if (in->my_dev->param.is_yaffs2 && (in->parent != in->my_dev->del_dir)) { -+ /* Move to the unlinked directory so we have a record that it was deleted. */ -+ yaffs_change_obj_name(in, in->my_dev->del_dir, _Y("deleted"), 0, 0); - -- } -- } - } - -- T(YAFFS_TRACE_SCAN, -- (TSTR("%d blocks to be sorted..." TENDSTR), nBlocksToScan)); -+ yaffs_remove_obj_from_dir(in); -+ yaffs_chunk_del(in->my_dev, in->hdr_chunk, 1, __LINE__); -+ in->hdr_chunk = 0; - -+ yaffs_free_obj(in); -+ return YAFFS_OK; - -+} - -- YYIELD(); -+/* yaffs_del_file deletes the whole file data -+ * and the inode associated with the file. -+ * It does not delete the links associated with the file. -+ */ -+static int yaffs_unlink_file_if_needed(yaffs_obj_t *in) -+{ - -- /* Sort the blocks */ --#ifndef CONFIG_YAFFS_USE_OWN_SORT -- { -- /* Use qsort now. */ -- yaffs_qsort(blockIndex, nBlocksToScan, sizeof(yaffs_BlockIndex), ybicmp); -- } --#else -- { -- /* Dungy old bubble sort... */ -+ int retVal; -+ int immediateDeletion = 0; -+ yaffs_dev_t *dev = in->my_dev; - -- yaffs_BlockIndex temp; -- int i; -- int j; -+ if (!in->my_inode) -+ immediateDeletion = 1; - -- for (i = 0; i < nBlocksToScan; i++) -- for (j = i + 1; j < nBlocksToScan; j++) -- if (blockIndex[i].seq > blockIndex[j].seq) { -- temp = blockIndex[j]; -- blockIndex[j] = blockIndex[i]; -- blockIndex[i] = temp; -- } -+ if (immediateDeletion) { -+ retVal = -+ yaffs_change_obj_name(in, in->my_dev->del_dir, -+ _Y("deleted"), 0, 0); -+ T(YAFFS_TRACE_TRACING, -+ (TSTR("yaffs: immediate deletion of file %d" TENDSTR), -+ in->obj_id)); -+ in->deleted = 1; -+ in->my_dev->n_deleted_files++; -+ if (dev->param.disable_soft_del || dev->param.is_yaffs2) -+ yaffs_resize_file(in, 0); -+ yaffs_soft_del_file(in); -+ } else { -+ retVal = -+ yaffs_change_obj_name(in, in->my_dev->unlinked_dir, -+ _Y("unlinked"), 0, 0); - } --#endif - -- YYIELD(); - -- T(YAFFS_TRACE_SCAN, (TSTR("...done" TENDSTR))); -+ return retVal; -+} - -- /* Now scan the blocks looking at the data. */ -- startIterator = 0; -- endIterator = nBlocksToScan - 1; -- T(YAFFS_TRACE_SCAN_DEBUG, -- (TSTR("%d blocks to be scanned" TENDSTR), nBlocksToScan)); -+int yaffs_del_file(yaffs_obj_t *in) -+{ -+ int retVal = YAFFS_OK; -+ int deleted; /* Need to cache value on stack if in is freed */ -+ yaffs_dev_t *dev = in->my_dev; - -- /* For each block.... backwards */ -- for (blockIterator = endIterator; !alloc_failed && blockIterator >= startIterator; -- blockIterator--) { -- /* Cooperative multitasking! This loop can run for so -- long that watchdog timers expire. */ -- YYIELD(); -+ if (dev->param.disable_soft_del || dev->param.is_yaffs2) -+ yaffs_resize_file(in, 0); - -- /* get the block to scan in the correct order */ -- blk = blockIndex[blockIterator].block; -+ if (in->n_data_chunks > 0) { -+ /* Use soft deletion if there is data in the file. -+ * That won't be the case if it has been resized to zero. -+ */ -+ if (!in->unlinked) -+ retVal = yaffs_unlink_file_if_needed(in); - -- bi = yaffs_GetBlockInfo(dev, blk); -+ deleted = in->deleted; - -+ if (retVal == YAFFS_OK && in->unlinked && !in->deleted) { -+ in->deleted = 1; -+ deleted = 1; -+ in->my_dev->n_deleted_files++; -+ yaffs_soft_del_file(in); -+ } -+ return deleted ? YAFFS_OK : YAFFS_FAIL; -+ } else { -+ /* The file has no data chunks so we toss it immediately */ -+ yaffs_free_tnode(in->my_dev, in->variant.file_variant.top); -+ in->variant.file_variant.top = NULL; -+ yaffs_generic_obj_del(in); - -- state = bi->blockState; -+ return YAFFS_OK; -+ } -+} - -- deleted = 0; -+static int yaffs_is_non_empty_dir(yaffs_obj_t *obj) -+{ -+ return (obj->variant_type == YAFFS_OBJECT_TYPE_DIRECTORY) && -+ !(ylist_empty(&obj->variant.dir_variant.children)); -+} - -- /* For each chunk in each block that needs scanning.... */ -- foundChunksInBlock = 0; -- for (c = dev->nChunksPerBlock - 1; -- !alloc_failed && c >= 0 && -- (state == YAFFS_BLOCK_STATE_NEEDS_SCANNING || -- state == YAFFS_BLOCK_STATE_ALLOCATING); c--) { -- /* Scan backwards... -- * Read the tags and decide what to do -- */ -+static int yaffs_del_dir(yaffs_obj_t *obj) -+{ -+ /* First check that the directory is empty. */ -+ if (yaffs_is_non_empty_dir(obj)) -+ return YAFFS_FAIL; - -- chunk = blk * dev->nChunksPerBlock + c; -+ return yaffs_generic_obj_del(obj); -+} - -- result = yaffs_ReadChunkWithTagsFromNAND(dev, chunk, NULL, -- &tags); -+static int yaffs_del_symlink(yaffs_obj_t *in) -+{ -+ if(in->variant.symlink_variant.alias) -+ YFREE(in->variant.symlink_variant.alias); -+ in->variant.symlink_variant.alias=NULL; - -- /* Let's have a good look at this chunk... */ -+ return yaffs_generic_obj_del(in); -+} - -- if (!tags.chunkUsed) { -- /* An unassigned chunk in the block. -- * If there are used chunks after this one, then -- * it is a chunk that was skipped due to failing the erased -- * check. Just skip it so that it can be deleted. -- * But, more typically, We get here when this is an unallocated -- * chunk and his means that either the block is empty or -- * this is the one being allocated from -- */ -+static int yaffs_del_link(yaffs_obj_t *in) -+{ -+ /* remove this hardlink from the list assocaited with the equivalent -+ * object -+ */ -+ ylist_del_init(&in->hard_links); -+ return yaffs_generic_obj_del(in); -+} - -- if (foundChunksInBlock) { -- /* This is a chunk that was skipped due to failing the erased check */ -- } else if (c == 0) { -- /* We're looking at the first chunk in the block so the block is unused */ -- state = YAFFS_BLOCK_STATE_EMPTY; -- dev->nErasedBlocks++; -- } else { -- if (state == YAFFS_BLOCK_STATE_NEEDS_SCANNING || -- state == YAFFS_BLOCK_STATE_ALLOCATING) { -- if (dev->sequenceNumber == bi->sequenceNumber) { -- /* this is the block being allocated from */ -- -- T(YAFFS_TRACE_SCAN, -- (TSTR -- (" Allocating from %d %d" -- TENDSTR), blk, c)); -- -- state = YAFFS_BLOCK_STATE_ALLOCATING; -- dev->allocationBlock = blk; -- dev->allocationPage = c; -- dev->allocationBlockFinder = blk; -- } else { -- /* This is a partially written block that is not -- * the current allocation block. This block must have -- * had a write failure, so set up for retirement. -- */ -- -- /* bi->needsRetiring = 1; ??? TODO */ -- bi->gcPrioritise = 1; -- -- T(YAFFS_TRACE_ALWAYS, -- (TSTR("Partially written block %d detected" TENDSTR), -- blk)); -- } -- } -- } -+int yaffs_del_obj(yaffs_obj_t *obj) -+{ -+int retVal = -1; -+ switch (obj->variant_type) { -+ case YAFFS_OBJECT_TYPE_FILE: -+ retVal = yaffs_del_file(obj); -+ break; -+ case YAFFS_OBJECT_TYPE_DIRECTORY: -+ if(!ylist_empty(&obj->variant.dir_variant.dirty)){ -+ T(YAFFS_TRACE_BACKGROUND, (TSTR("Remove object %d from dirty directories" TENDSTR),obj->obj_id)); -+ ylist_del_init(&obj->variant.dir_variant.dirty); -+ } -+ return yaffs_del_dir(obj); -+ break; -+ case YAFFS_OBJECT_TYPE_SYMLINK: -+ retVal = yaffs_del_symlink(obj); -+ break; -+ case YAFFS_OBJECT_TYPE_HARDLINK: -+ retVal = yaffs_del_link(obj); -+ break; -+ case YAFFS_OBJECT_TYPE_SPECIAL: -+ retVal = yaffs_generic_obj_del(obj); -+ break; -+ case YAFFS_OBJECT_TYPE_UNKNOWN: -+ retVal = 0; -+ break; /* should not happen. */ -+ } - -- dev->nFreeChunks++; -+ return retVal; -+} - -- } else if (tags.eccResult == YAFFS_ECC_RESULT_UNFIXED) { -- T(YAFFS_TRACE_SCAN, -- (TSTR(" Unfixed ECC in chunk(%d:%d), chunk ignored"TENDSTR), -- blk, c)); -- -- dev->nFreeChunks++; -- -- } else if (tags.chunkId > 0) { -- /* chunkId > 0 so it is a data chunk... */ -- unsigned int endpos; -- __u32 chunkBase = -- (tags.chunkId - 1) * dev->nDataBytesPerChunk; -- -- foundChunksInBlock = 1; -- -- -- yaffs_SetChunkBit(dev, blk, c); -- bi->pagesInUse++; -- -- in = yaffs_FindOrCreateObjectByNumber(dev, -- tags. -- objectId, -- YAFFS_OBJECT_TYPE_FILE); -- if (!in) { -- /* Out of memory */ -- alloc_failed = 1; -- } -+static int yaffs_unlink_worker(yaffs_obj_t *obj) -+{ - -- if (in && -- in->variantType == YAFFS_OBJECT_TYPE_FILE -- && chunkBase < -- in->variant.fileVariant.shrinkSize) { -- /* This has not been invalidated by a resize */ -- if (!yaffs_PutChunkIntoFile(in, tags.chunkId, -- chunk, -1)) { -- alloc_failed = 1; -- } -+ int immediateDeletion = 0; - -- /* File size is calculated by looking at the data chunks if we have not -- * seen an object header yet. Stop this practice once we find an object header. -- */ -- endpos = -- (tags.chunkId - -- 1) * dev->nDataBytesPerChunk + -- tags.byteCount; -- -- if (!in->valid && /* have not got an object header yet */ -- in->variant.fileVariant. -- scannedFileSize < endpos) { -- in->variant.fileVariant. -- scannedFileSize = endpos; -- in->variant.fileVariant. -- fileSize = -- in->variant.fileVariant. -- scannedFileSize; -- } -+ if (!obj->my_inode) -+ immediateDeletion = 1; - -- } else if (in) { -- /* This chunk has been invalidated by a resize, so delete */ -- yaffs_DeleteChunk(dev, chunk, 1, __LINE__); -+ if(obj) -+ yaffs_update_parent(obj->parent); - -- } -- } else { -- /* chunkId == 0, so it is an ObjectHeader. -- * Thus, we read in the object header and make the object -- */ -- foundChunksInBlock = 1; -+ if (obj->variant_type == YAFFS_OBJECT_TYPE_HARDLINK) { -+ return yaffs_del_link(obj); -+ } else if (!ylist_empty(&obj->hard_links)) { -+ /* Curve ball: We're unlinking an object that has a hardlink. -+ * -+ * This problem arises because we are not strictly following -+ * The Linux link/inode model. -+ * -+ * We can't really delete the object. -+ * Instead, we do the following: -+ * - Select a hardlink. -+ * - Unhook it from the hard links -+ * - Move it from its parent directory (so that the rename can work) -+ * - Rename the object to the hardlink's name. -+ * - Delete the hardlink -+ */ - -- yaffs_SetChunkBit(dev, blk, c); -- bi->pagesInUse++; -+ yaffs_obj_t *hl; -+ yaffs_obj_t *parent; -+ int retVal; -+ YCHAR name[YAFFS_MAX_NAME_LENGTH + 1]; - -- oh = NULL; -- in = NULL; -+ hl = ylist_entry(obj->hard_links.next, yaffs_obj_t, hard_links); - -- if (tags.extraHeaderInfoAvailable) { -- in = yaffs_FindOrCreateObjectByNumber -- (dev, tags.objectId, -- tags.extraObjectType); -- if (!in) -- alloc_failed = 1; -- } -+ yaffs_get_obj_name(hl, name, YAFFS_MAX_NAME_LENGTH + 1); -+ parent = hl->parent; - -- if (!in || --#ifdef CONFIG_YAFFS_DISABLE_LAZY_LOAD -- !in->valid || --#endif -- tags.extraShadows || -- (!in->valid && -- (tags.objectId == YAFFS_OBJECTID_ROOT || -- tags.objectId == YAFFS_OBJECTID_LOSTNFOUND))) { -- -- /* If we don't have valid info then we need to read the chunk -- * TODO In future we can probably defer reading the chunk and -- * living with invalid data until needed. -- */ -+ ylist_del_init(&hl->hard_links); - -- result = yaffs_ReadChunkWithTagsFromNAND(dev, -- chunk, -- chunkData, -- NULL); -- -- oh = (yaffs_ObjectHeader *) chunkData; -- -- if (dev->inbandTags) { -- /* Fix up the header if they got corrupted by inband tags */ -- oh->shadowsObject = oh->inbandShadowsObject; -- oh->isShrink = oh->inbandIsShrink; -- } -+ yaffs_add_obj_to_dir(obj->my_dev->unlinked_dir, hl); - -- if (!in) { -- in = yaffs_FindOrCreateObjectByNumber(dev, tags.objectId, oh->type); -- if (!in) -- alloc_failed = 1; -- } -+ retVal = yaffs_change_obj_name(obj,parent, name, 0, 0); - -- } -+ if (retVal == YAFFS_OK) -+ retVal = yaffs_generic_obj_del(hl); - -- if (!in) { -- /* TODO Hoosterman we have a problem! */ -- T(YAFFS_TRACE_ERROR, -- (TSTR -- ("yaffs tragedy: Could not make object for object %d at chunk %d during scan" -- TENDSTR), tags.objectId, chunk)); -- continue; -- } -+ return retVal; - -- if (in->valid) { -- /* We have already filled this one. -- * We have a duplicate that will be discarded, but -- * we first have to suck out resize info if it is a file. -- */ -+ } else if (immediateDeletion) { -+ switch (obj->variant_type) { -+ case YAFFS_OBJECT_TYPE_FILE: -+ return yaffs_del_file(obj); -+ break; -+ case YAFFS_OBJECT_TYPE_DIRECTORY: -+ ylist_del_init(&obj->variant.dir_variant.dirty); -+ return yaffs_del_dir(obj); -+ break; -+ case YAFFS_OBJECT_TYPE_SYMLINK: -+ return yaffs_del_symlink(obj); -+ break; -+ case YAFFS_OBJECT_TYPE_SPECIAL: -+ return yaffs_generic_obj_del(obj); -+ break; -+ case YAFFS_OBJECT_TYPE_HARDLINK: -+ case YAFFS_OBJECT_TYPE_UNKNOWN: -+ default: -+ return YAFFS_FAIL; -+ } -+ } else if(yaffs_is_non_empty_dir(obj)) -+ return YAFFS_FAIL; -+ else -+ return yaffs_change_obj_name(obj, obj->my_dev->unlinked_dir, -+ _Y("unlinked"), 0, 0); -+} - -- if ((in->variantType == YAFFS_OBJECT_TYPE_FILE) && -- ((oh && -- oh->type == YAFFS_OBJECT_TYPE_FILE) || -- (tags.extraHeaderInfoAvailable && -- tags.extraObjectType == YAFFS_OBJECT_TYPE_FILE))) { -- __u32 thisSize = -- (oh) ? oh->fileSize : tags. -- extraFileLength; -- __u32 parentObjectId = -- (oh) ? oh-> -- parentObjectId : tags. -- extraParentObjectId; -- -- -- isShrink = -- (oh) ? oh->isShrink : tags. -- extraIsShrinkHeader; - -- /* If it is deleted (unlinked at start also means deleted) -- * we treat the file size as being zeroed at this point. -- */ -- if (parentObjectId == -- YAFFS_OBJECTID_DELETED -- || parentObjectId == -- YAFFS_OBJECTID_UNLINKED) { -- thisSize = 0; -- isShrink = 1; -- } -+static int yaffs_unlink_obj(yaffs_obj_t *obj) -+{ - -- if (isShrink && -- in->variant.fileVariant. -- shrinkSize > thisSize) { -- in->variant.fileVariant. -- shrinkSize = -- thisSize; -- } -+ if (obj && obj->unlink_allowed) -+ return yaffs_unlink_worker(obj); - -- if (isShrink) -- bi->hasShrinkHeader = 1; -+ return YAFFS_FAIL; - -- } -- /* Use existing - destroy this one. */ -- yaffs_DeleteChunk(dev, chunk, 1, __LINE__); -+} -+int yaffs_unlinker(yaffs_obj_t *dir, const YCHAR *name) -+{ -+ yaffs_obj_t *obj; - -- } -+ obj = yaffs_find_by_name(dir, name); -+ return yaffs_unlink_obj(obj); -+} - -- if (!in->valid && in->variantType != -- (oh ? oh->type : tags.extraObjectType)) -- T(YAFFS_TRACE_ERROR, ( -- TSTR("yaffs tragedy: Bad object type, " -- TCONT("%d != %d, for object %d at chunk ") -- TCONT("%d during scan") -- TENDSTR), oh ? -- oh->type : tags.extraObjectType, -- in->variantType, tags.objectId, -- chunk)); -- -- if (!in->valid && -- (tags.objectId == YAFFS_OBJECTID_ROOT || -- tags.objectId == -- YAFFS_OBJECTID_LOSTNFOUND)) { -- /* We only load some info, don't fiddle with directory structure */ -- in->valid = 1; -+/*----------------------- Initialisation Scanning ---------------------- */ - -- if (oh) { -- in->variantType = oh->type; -+void yaffs_handle_shadowed_obj(yaffs_dev_t *dev, int obj_id, -+ int backward_scanning) -+{ -+ yaffs_obj_t *obj; - -- in->yst_mode = oh->yst_mode; --#ifdef CONFIG_YAFFS_WINCE -- in->win_atime[0] = oh->win_atime[0]; -- in->win_ctime[0] = oh->win_ctime[0]; -- in->win_mtime[0] = oh->win_mtime[0]; -- in->win_atime[1] = oh->win_atime[1]; -- in->win_ctime[1] = oh->win_ctime[1]; -- in->win_mtime[1] = oh->win_mtime[1]; --#else -- in->yst_uid = oh->yst_uid; -- in->yst_gid = oh->yst_gid; -- in->yst_atime = oh->yst_atime; -- in->yst_mtime = oh->yst_mtime; -- in->yst_ctime = oh->yst_ctime; -- in->yst_rdev = oh->yst_rdev; -+ if (!backward_scanning) { -+ /* Handle YAFFS1 forward scanning case -+ * For YAFFS1 we always do the deletion -+ */ - --#endif -- } else { -- in->variantType = tags.extraObjectType; -- in->lazyLoaded = 1; -- } -+ } else { -+ /* Handle YAFFS2 case (backward scanning) -+ * If the shadowed object exists then ignore. -+ */ -+ obj = yaffs_find_by_number(dev, obj_id); -+ if(obj) -+ return; -+ } - -- in->hdrChunk = chunk; -+ /* Let's create it (if it does not exist) assuming it is a file so that it can do shrinking etc. -+ * We put it in unlinked dir to be cleaned up after the scanning -+ */ -+ obj = -+ yaffs_find_or_create_by_number(dev, obj_id, -+ YAFFS_OBJECT_TYPE_FILE); -+ if (!obj) -+ return; -+ obj->is_shadowed = 1; -+ yaffs_add_obj_to_dir(dev->unlinked_dir, obj); -+ obj->variant.file_variant.shrink_size = 0; -+ obj->valid = 1; /* So that we don't read any other info for this file */ - -- } else if (!in->valid) { -- /* we need to load this info */ -+} - -- in->valid = 1; -- in->hdrChunk = chunk; - -- if (oh) { -- in->variantType = oh->type; -+void yaffs_link_fixup(yaffs_dev_t *dev, yaffs_obj_t *hard_list) -+{ -+ yaffs_obj_t *hl; -+ yaffs_obj_t *in; - -- in->yst_mode = oh->yst_mode; --#ifdef CONFIG_YAFFS_WINCE -- in->win_atime[0] = oh->win_atime[0]; -- in->win_ctime[0] = oh->win_ctime[0]; -- in->win_mtime[0] = oh->win_mtime[0]; -- in->win_atime[1] = oh->win_atime[1]; -- in->win_ctime[1] = oh->win_ctime[1]; -- in->win_mtime[1] = oh->win_mtime[1]; --#else -- in->yst_uid = oh->yst_uid; -- in->yst_gid = oh->yst_gid; -- in->yst_atime = oh->yst_atime; -- in->yst_mtime = oh->yst_mtime; -- in->yst_ctime = oh->yst_ctime; -- in->yst_rdev = oh->yst_rdev; --#endif -+ while (hard_list) { -+ hl = hard_list; -+ hard_list = (yaffs_obj_t *) (hard_list->hard_links.next); -+ -+ in = yaffs_find_by_number(dev, -+ hl->variant.hardlink_variant. -+ equiv_id); - -- if (oh->shadowsObject > 0) -- yaffs_HandleShadowedObject(dev, -- oh-> -- shadowsObject, -- 1); -- -- -- yaffs_SetObjectName(in, oh->name); -- parent = -- yaffs_FindOrCreateObjectByNumber -- (dev, oh->parentObjectId, -- YAFFS_OBJECT_TYPE_DIRECTORY); -- -- fileSize = oh->fileSize; -- isShrink = oh->isShrink; -- equivalentObjectId = oh->equivalentObjectId; -+ if (in) { -+ /* Add the hardlink pointers */ -+ hl->variant.hardlink_variant.equiv_obj = in; -+ ylist_add(&hl->hard_links, &in->hard_links); -+ } else { -+ /* Todo Need to report/handle this better. -+ * Got a problem... hardlink to a non-existant object -+ */ -+ hl->variant.hardlink_variant.equiv_obj = NULL; -+ YINIT_LIST_HEAD(&hl->hard_links); - -- } else { -- in->variantType = tags.extraObjectType; -- parent = -- yaffs_FindOrCreateObjectByNumber -- (dev, tags.extraParentObjectId, -- YAFFS_OBJECT_TYPE_DIRECTORY); -- fileSize = tags.extraFileLength; -- isShrink = tags.extraIsShrinkHeader; -- equivalentObjectId = tags.extraEquivalentObjectId; -- in->lazyLoaded = 1; -+ } -+ } -+} - -- } -- in->dirty = 0; - -- if (!parent) -- alloc_failed = 1; -+static void yaffs_strip_deleted_objs(yaffs_dev_t *dev) -+{ -+ /* -+ * Sort out state of unlinked and deleted objects after scanning. -+ */ -+ struct ylist_head *i; -+ struct ylist_head *n; -+ yaffs_obj_t *l; - -- /* directory stuff... -- * hook up to parent -- */ -+ if (dev->read_only) -+ return; - -- if (parent && parent->variantType == -- YAFFS_OBJECT_TYPE_UNKNOWN) { -- /* Set up as a directory */ -- parent->variantType = -- YAFFS_OBJECT_TYPE_DIRECTORY; -- YINIT_LIST_HEAD(&parent->variant. -- directoryVariant. -- children); -- } else if (!parent || parent->variantType != -- YAFFS_OBJECT_TYPE_DIRECTORY) { -- /* Hoosterman, another problem.... -- * We're trying to use a non-directory as a directory -- */ -+ /* Soft delete all the unlinked files */ -+ ylist_for_each_safe(i, n, -+ &dev->unlinked_dir->variant.dir_variant.children) { -+ if (i) { -+ l = ylist_entry(i, yaffs_obj_t, siblings); -+ yaffs_del_obj(l); -+ } -+ } - -- T(YAFFS_TRACE_ERROR, -- (TSTR -- ("yaffs tragedy: attempting to use non-directory as a directory in scan. Put in lost+found." -- TENDSTR))); -- parent = dev->lostNFoundDir; -- } -+ ylist_for_each_safe(i, n, -+ &dev->del_dir->variant.dir_variant.children) { -+ if (i) { -+ l = ylist_entry(i, yaffs_obj_t, siblings); -+ yaffs_del_obj(l); -+ } -+ } - -- yaffs_AddObjectToDirectory(parent, in); -+} - -- itsUnlinked = (parent == dev->deletedDir) || -- (parent == dev->unlinkedDir); -+/* -+ * This code iterates through all the objects making sure that they are rooted. -+ * Any unrooted objects are re-rooted in lost+found. -+ * An object needs to be in one of: -+ * - Directly under deleted, unlinked -+ * - Directly or indirectly under root. -+ * -+ * Note: -+ * This code assumes that we don't ever change the current relationships between -+ * directories: -+ * root_dir->parent == unlinked_dir->parent == del_dir->parent == NULL -+ * lostNfound->parent == root_dir -+ * -+ * This fixes the problem where directories might have inadvertently been deleted -+ * leaving the object "hanging" without being rooted in the directory tree. -+ */ -+ -+static int yaffs_has_null_parent(yaffs_dev_t *dev, yaffs_obj_t *obj) -+{ -+ return (obj == dev->del_dir || -+ obj == dev->unlinked_dir|| -+ obj == dev->root_dir); -+} - -- if (isShrink) { -- /* Mark the block as having a shrinkHeader */ -- bi->hasShrinkHeader = 1; -- } -+static void yaffs_fix_hanging_objs(yaffs_dev_t *dev) -+{ -+ yaffs_obj_t *obj; -+ yaffs_obj_t *parent; -+ int i; -+ struct ylist_head *lh; -+ struct ylist_head *n; -+ int depthLimit; -+ int hanging; - -- /* Note re hardlinks. -- * Since we might scan a hardlink before its equivalent object is scanned -- * we put them all in a list. -- * After scanning is complete, we should have all the objects, so we run -- * through this list and fix up all the chains. -- */ -+ if (dev->read_only) -+ return; - -- switch (in->variantType) { -- case YAFFS_OBJECT_TYPE_UNKNOWN: -- /* Todo got a problem */ -- break; -- case YAFFS_OBJECT_TYPE_FILE: -- -- if (in->variant.fileVariant. -- scannedFileSize < fileSize) { -- /* This covers the case where the file size is greater -- * than where the data is -- * This will happen if the file is resized to be larger -- * than its current data extents. -- */ -- in->variant.fileVariant.fileSize = fileSize; -- in->variant.fileVariant.scannedFileSize = -- in->variant.fileVariant.fileSize; -- } -+ /* Iterate through the objects in each hash entry, -+ * looking at each object. -+ * Make sure it is rooted. -+ */ - -- if (isShrink && -- in->variant.fileVariant.shrinkSize > fileSize) { -- in->variant.fileVariant.shrinkSize = fileSize; -- } -+ for (i = 0; i < YAFFS_NOBJECT_BUCKETS; i++) { -+ ylist_for_each_safe(lh, n, &dev->obj_bucket[i].list) { -+ if (lh) { -+ obj = ylist_entry(lh, yaffs_obj_t, hash_link); -+ parent= obj->parent; -+ -+ if(yaffs_has_null_parent(dev,obj)){ -+ /* These directories are not hanging */ -+ hanging = 0; -+ } -+ else if(!parent || parent->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) -+ hanging = 1; -+ else if(yaffs_has_null_parent(dev,parent)) -+ hanging = 0; -+ else { -+ /* -+ * Need to follow the parent chain to see if it is hanging. -+ */ -+ hanging = 0; -+ depthLimit=100; - -- break; -- case YAFFS_OBJECT_TYPE_HARDLINK: -- if (!itsUnlinked) { -- in->variant.hardLinkVariant.equivalentObjectId = -- equivalentObjectId; -- in->hardLinks.next = -- (struct ylist_head *) hardList; -- hardList = in; -- } -- break; -- case YAFFS_OBJECT_TYPE_DIRECTORY: -- /* Do nothing */ -- break; -- case YAFFS_OBJECT_TYPE_SPECIAL: -- /* Do nothing */ -- break; -- case YAFFS_OBJECT_TYPE_SYMLINK: -- if (oh) { -- in->variant.symLinkVariant.alias = -- yaffs_CloneString(oh->alias); -- if (!in->variant.symLinkVariant.alias) -- alloc_failed = 1; -- } -- break; -+ while(parent != dev->root_dir && -+ parent->parent && -+ parent->parent->variant_type == YAFFS_OBJECT_TYPE_DIRECTORY && -+ depthLimit > 0){ -+ parent = parent->parent; -+ depthLimit--; - } -- -+ if(parent != dev->root_dir) -+ hanging = 1; -+ } -+ if(hanging){ -+ T(YAFFS_TRACE_SCAN, -+ (TSTR("Hanging object %d moved to lost and found" TENDSTR), -+ obj->obj_id)); -+ yaffs_add_obj_to_dir(dev->lost_n_found,obj); - } -- - } -+ } -+ } -+} - -- } /* End of scanning for each chunk */ - -- if (state == YAFFS_BLOCK_STATE_NEEDS_SCANNING) { -- /* If we got this far while scanning, then the block is fully allocated. */ -- state = YAFFS_BLOCK_STATE_FULL; -- } -+/* -+ * Delete directory contents for cleaning up lost and found. -+ */ -+static void yaffs_del_dir_contents(yaffs_obj_t *dir) -+{ -+ yaffs_obj_t *obj; -+ struct ylist_head *lh; -+ struct ylist_head *n; - -- bi->blockState = state; -+ if(dir->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) -+ YBUG(); -+ -+ ylist_for_each_safe(lh, n, &dir->variant.dir_variant.children) { -+ if (lh) { -+ obj = ylist_entry(lh, yaffs_obj_t, siblings); -+ if(obj->variant_type == YAFFS_OBJECT_TYPE_DIRECTORY) -+ yaffs_del_dir_contents(obj); -+ -+ T(YAFFS_TRACE_SCAN, -+ (TSTR("Deleting lost_found object %d" TENDSTR), -+ obj->obj_id)); - -- /* Now let's see if it was dirty */ -- if (bi->pagesInUse == 0 && -- !bi->hasShrinkHeader && -- bi->blockState == YAFFS_BLOCK_STATE_FULL) { -- yaffs_BlockBecameDirty(dev, blk); -+ /* Need to use UnlinkObject since Delete would not handle -+ * hardlinked objects correctly. -+ */ -+ yaffs_unlink_obj(obj); - } -- - } -+ -+} - -- if (altBlockIndex) -- YFREE_ALT(blockIndex); -- else -- YFREE(blockIndex); -+static void yaffs_empty_l_n_f(yaffs_dev_t *dev) -+{ -+ yaffs_del_dir_contents(dev->lost_n_found); -+} - -- /* Ok, we've done all the scanning. -- * Fix up the hard link chains. -- * We should now have scanned all the objects, now it's time to add these -- * hardlinks. -- */ -- yaffs_HardlinkFixup(dev, hardList); -+static void yaffs_check_obj_details_loaded(yaffs_obj_t *in) -+{ -+ __u8 *chunkData; -+ yaffs_obj_header *oh; -+ yaffs_dev_t *dev; -+ yaffs_ext_tags tags; -+ int result; -+ int alloc_failed = 0; - -+ if (!in) -+ return; - -- yaffs_ReleaseTempBuffer(dev, chunkData, __LINE__); -+ dev = in->my_dev; - -- if (alloc_failed) -- return YAFFS_FAIL; -+#if 0 -+ T(YAFFS_TRACE_SCAN, (TSTR("details for object %d %s loaded" TENDSTR), -+ in->obj_id, -+ in->lazy_loaded ? "not yet" : "already")); -+#endif - -- T(YAFFS_TRACE_SCAN, (TSTR("yaffs_ScanBackwards ends" TENDSTR))); -+ if (in->lazy_loaded && in->hdr_chunk > 0) { -+ in->lazy_loaded = 0; -+ chunkData = yaffs_get_temp_buffer(dev, __LINE__); - -- return YAFFS_OK; --} -+ result = yaffs_rd_chunk_tags_nand(dev, in->hdr_chunk, chunkData, &tags); -+ oh = (yaffs_obj_header *) chunkData; - --/*------------------------------ Directory Functions ----------------------------- */ -+ in->yst_mode = oh->yst_mode; -+#ifdef CONFIG_YAFFS_WINCE -+ in->win_atime[0] = oh->win_atime[0]; -+ in->win_ctime[0] = oh->win_ctime[0]; -+ in->win_mtime[0] = oh->win_mtime[0]; -+ in->win_atime[1] = oh->win_atime[1]; -+ in->win_ctime[1] = oh->win_ctime[1]; -+ in->win_mtime[1] = oh->win_mtime[1]; -+#else -+ in->yst_uid = oh->yst_uid; -+ in->yst_gid = oh->yst_gid; -+ in->yst_atime = oh->yst_atime; -+ in->yst_mtime = oh->yst_mtime; -+ in->yst_ctime = oh->yst_ctime; -+ in->yst_rdev = oh->yst_rdev; - --static void yaffs_VerifyObjectInDirectory(yaffs_Object *obj) --{ -- struct ylist_head *lh; -- yaffs_Object *listObj; -+#endif -+ yaffs_set_obj_name_from_oh(in, oh); - -- int count = 0; -+ if (in->variant_type == YAFFS_OBJECT_TYPE_SYMLINK) { -+ in->variant.symlink_variant.alias = -+ yaffs_clone_str(oh->alias); -+ if (!in->variant.symlink_variant.alias) -+ alloc_failed = 1; /* Not returned to caller */ -+ } - -- if (!obj) { -- T(YAFFS_TRACE_ALWAYS, (TSTR("No object to verify" TENDSTR))); -- YBUG(); -- return; -+ yaffs_release_temp_buffer(dev, chunkData, __LINE__); - } -+} - -- if (yaffs_SkipVerification(obj->myDev)) -- return; -+/*------------------------------ Directory Functions ----------------------------- */ - -- if (!obj->parent) { -- T(YAFFS_TRACE_ALWAYS, (TSTR("Object does not have parent" TENDSTR))); -- YBUG(); -+/* -+ *yaffs_update_parent() handles fixing a directories mtime and ctime when a new -+ * link (ie. name) is created or deleted in the directory. -+ * -+ * ie. -+ * create dir/a : update dir's mtime/ctime -+ * rm dir/a: update dir's mtime/ctime -+ * modify dir/a: don't update dir's mtimme/ctime -+ * -+ * This can be handled immediately or defered. Defering helps reduce the number -+ * of updates when many files in a directory are changed within a brief period. -+ * -+ * If the directory updating is defered then yaffs_update_dirty_dirs must be -+ * called periodically. -+ */ -+ -+static void yaffs_update_parent(yaffs_obj_t *obj) -+{ -+ yaffs_dev_t *dev; -+ if(!obj) - return; -- } -- -- if (obj->parent->variantType != YAFFS_OBJECT_TYPE_DIRECTORY) { -- T(YAFFS_TRACE_ALWAYS, (TSTR("Parent is not directory" TENDSTR))); -- YBUG(); -- } -- -- /* Iterate through the objects in each hash entry */ -+#ifndef CONFIG_YAFFS_WINCE - -- ylist_for_each(lh, &obj->parent->variant.directoryVariant.children) { -- if (lh) { -- listObj = ylist_entry(lh, yaffs_Object, siblings); -- yaffs_VerifyObject(listObj); -- if (obj == listObj) -- count++; -+ dev = obj->my_dev; -+ obj->dirty = 1; -+ obj->yst_mtime = obj->yst_ctime = Y_CURRENT_TIME; -+ if(dev->param.defered_dir_update){ -+ struct ylist_head *link = &obj->variant.dir_variant.dirty; -+ -+ if(ylist_empty(link)){ -+ ylist_add(link,&dev->dirty_dirs); -+ T(YAFFS_TRACE_BACKGROUND, (TSTR("Added object %d to dirty directories" TENDSTR),obj->obj_id)); - } -- } - -- if (count != 1) { -- T(YAFFS_TRACE_ALWAYS, (TSTR("Object in directory %d times" TENDSTR), count)); -- YBUG(); -- } -+ } else -+ yaffs_update_oh(obj, NULL, 0, 0, 0, NULL); -+#endif - } - --static void yaffs_VerifyDirectory(yaffs_Object *directory) -+void yaffs_update_dirty_dirs(yaffs_dev_t *dev) - { -- struct ylist_head *lh; -- yaffs_Object *listObj; -- -- if (!directory) { -- YBUG(); -- return; -- } -+ struct ylist_head *link; -+ yaffs_obj_t *obj; -+ yaffs_dir_s *dS; -+ yaffs_obj_variant *oV; - -- if (yaffs_SkipFullVerification(directory->myDev)) -- return; -+ T(YAFFS_TRACE_BACKGROUND, (TSTR("Update dirty directories" TENDSTR))); - -- if (directory->variantType != YAFFS_OBJECT_TYPE_DIRECTORY) { -- T(YAFFS_TRACE_ALWAYS, (TSTR("Directory has wrong type: %d" TENDSTR), directory->variantType)); -- YBUG(); -- } -+ while(!ylist_empty(&dev->dirty_dirs)){ -+ link = dev->dirty_dirs.next; -+ ylist_del_init(link); -+ -+ dS=ylist_entry(link,yaffs_dir_s,dirty); -+ oV = ylist_entry(dS,yaffs_obj_variant,dir_variant); -+ obj = ylist_entry(oV,yaffs_obj_t,variant); - -- /* Iterate through the objects in each hash entry */ -+ T(YAFFS_TRACE_BACKGROUND, (TSTR("Update directory %d" TENDSTR), obj->obj_id)); - -- ylist_for_each(lh, &directory->variant.directoryVariant.children) { -- if (lh) { -- listObj = ylist_entry(lh, yaffs_Object, siblings); -- if (listObj->parent != directory) { -- T(YAFFS_TRACE_ALWAYS, (TSTR("Object in directory list has wrong parent %p" TENDSTR), listObj->parent)); -- YBUG(); -- } -- yaffs_VerifyObjectInDirectory(listObj); -- } -+ if(obj->dirty) -+ yaffs_update_oh(obj, NULL, 0, 0, 0, NULL); - } - } - -- --static void yaffs_RemoveObjectFromDirectory(yaffs_Object *obj) -+static void yaffs_remove_obj_from_dir(yaffs_obj_t *obj) - { -- yaffs_Device *dev = obj->myDev; -- yaffs_Object *parent; -+ yaffs_dev_t *dev = obj->my_dev; -+ yaffs_obj_t *parent; - -- yaffs_VerifyObjectInDirectory(obj); -+ yaffs_verify_obj_in_dir(obj); - parent = obj->parent; - -- yaffs_VerifyDirectory(parent); -+ yaffs_verify_dir(parent); - -- if (dev && dev->removeObjectCallback) -- dev->removeObjectCallback(obj); -+ if (dev && dev->param.remove_obj_fn) -+ dev->param.remove_obj_fn(obj); - - - ylist_del_init(&obj->siblings); - obj->parent = NULL; -- -- yaffs_VerifyDirectory(parent); -+ -+ yaffs_verify_dir(parent); - } - -- --static void yaffs_AddObjectToDirectory(yaffs_Object *directory, -- yaffs_Object *obj) -+void yaffs_add_obj_to_dir(yaffs_obj_t *directory, -+ yaffs_obj_t *obj) - { - if (!directory) { - T(YAFFS_TRACE_ALWAYS, -@@ -6699,7 +4495,7 @@ static void yaffs_AddObjectToDirectory(y - YBUG(); - return; - } -- if (directory->variantType != YAFFS_OBJECT_TYPE_DIRECTORY) { -+ if (directory->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) { - T(YAFFS_TRACE_ALWAYS, - (TSTR - ("tragedy: Trying to add an object to a non-directory" -@@ -6713,27 +4509,27 @@ static void yaffs_AddObjectToDirectory(y - } - - -- yaffs_VerifyDirectory(directory); -+ yaffs_verify_dir(directory); - -- yaffs_RemoveObjectFromDirectory(obj); -+ yaffs_remove_obj_from_dir(obj); - - - /* Now add it */ -- ylist_add(&obj->siblings, &directory->variant.directoryVariant.children); -+ ylist_add(&obj->siblings, &directory->variant.dir_variant.children); - obj->parent = directory; - -- if (directory == obj->myDev->unlinkedDir -- || directory == obj->myDev->deletedDir) { -+ if (directory == obj->my_dev->unlinked_dir -+ || directory == obj->my_dev->del_dir) { - obj->unlinked = 1; -- obj->myDev->nUnlinkedFiles++; -- obj->renameAllowed = 0; -+ obj->my_dev->n_unlinked_files++; -+ obj->rename_allowed = 0; - } - -- yaffs_VerifyDirectory(directory); -- yaffs_VerifyObjectInDirectory(obj); -+ yaffs_verify_dir(directory); -+ yaffs_verify_obj_in_dir(obj); - } - --yaffs_Object *yaffs_FindObjectByName(yaffs_Object *directory, -+yaffs_obj_t *yaffs_find_by_name(yaffs_obj_t *directory, - const YCHAR *name) - { - int sum; -@@ -6741,7 +4537,7 @@ yaffs_Object *yaffs_FindObjectByName(yaf - struct ylist_head *i; - YCHAR buffer[YAFFS_MAX_NAME_LENGTH + 1]; - -- yaffs_Object *l; -+ yaffs_obj_t *l; - - if (!name) - return NULL; -@@ -6749,39 +4545,39 @@ yaffs_Object *yaffs_FindObjectByName(yaf - if (!directory) { - T(YAFFS_TRACE_ALWAYS, - (TSTR -- ("tragedy: yaffs_FindObjectByName: null pointer directory" -+ ("tragedy: yaffs_find_by_name: null pointer directory" - TENDSTR))); - YBUG(); - return NULL; - } -- if (directory->variantType != YAFFS_OBJECT_TYPE_DIRECTORY) { -+ if (directory->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) { - T(YAFFS_TRACE_ALWAYS, - (TSTR -- ("tragedy: yaffs_FindObjectByName: non-directory" TENDSTR))); -+ ("tragedy: yaffs_find_by_name: non-directory" TENDSTR))); - YBUG(); - } - -- sum = yaffs_CalcNameSum(name); -+ sum = yaffs_calc_name_sum(name); - -- ylist_for_each(i, &directory->variant.directoryVariant.children) { -+ ylist_for_each(i, &directory->variant.dir_variant.children) { - if (i) { -- l = ylist_entry(i, yaffs_Object, siblings); -+ l = ylist_entry(i, yaffs_obj_t, siblings); - - if (l->parent != directory) - YBUG(); - -- yaffs_CheckObjectDetailsLoaded(l); -+ yaffs_check_obj_details_loaded(l); - - /* Special case for lost-n-found */ -- if (l->objectId == YAFFS_OBJECTID_LOSTNFOUND) { -+ if (l->obj_id == YAFFS_OBJECTID_LOSTNFOUND) { - if (yaffs_strcmp(name, YAFFS_LOSTNFOUND_NAME) == 0) - return l; -- } else if (yaffs_SumCompare(l->sum, sum) || l->hdrChunk <= 0) { -+ } else if (yaffs_sum_cmp(l->sum, sum) || l->hdr_chunk <= 0) { - /* LostnFound chunk called Objxxx - * Do a real check - */ -- yaffs_GetObjectName(l, buffer, -- YAFFS_MAX_NAME_LENGTH); -+ yaffs_get_obj_name(l, buffer, -+ YAFFS_MAX_NAME_LENGTH + 1); - if (yaffs_strncmp(name, buffer, YAFFS_MAX_NAME_LENGTH) == 0) - return l; - } -@@ -6793,31 +4589,31 @@ yaffs_Object *yaffs_FindObjectByName(yaf - - - #if 0 --int yaffs_ApplyToDirectoryChildren(yaffs_Object *theDir, -- int (*fn) (yaffs_Object *)) -+int yaffs_ApplyToDirectoryChildren(yaffs_obj_t *the_dir, -+ int (*fn) (yaffs_obj_t *)) - { - struct ylist_head *i; -- yaffs_Object *l; -+ yaffs_obj_t *l; - -- if (!theDir) { -+ if (!the_dir) { - T(YAFFS_TRACE_ALWAYS, - (TSTR -- ("tragedy: yaffs_FindObjectByName: null pointer directory" -+ ("tragedy: yaffs_find_by_name: null pointer directory" - TENDSTR))); - YBUG(); - return YAFFS_FAIL; - } -- if (theDir->variantType != YAFFS_OBJECT_TYPE_DIRECTORY) { -+ if (the_dir->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) { - T(YAFFS_TRACE_ALWAYS, - (TSTR -- ("tragedy: yaffs_FindObjectByName: non-directory" TENDSTR))); -+ ("tragedy: yaffs_find_by_name: non-directory" TENDSTR))); - YBUG(); - return YAFFS_FAIL; - } - -- ylist_for_each(i, &theDir->variant.directoryVariant.children) { -+ ylist_for_each(i, &the_dir->variant.dir_variant.children) { - if (i) { -- l = ylist_entry(i, yaffs_Object, siblings); -+ l = ylist_entry(i, yaffs_obj_t, siblings); - if (l && !fn(l)) - return YAFFS_FAIL; - } -@@ -6832,82 +4628,175 @@ int yaffs_ApplyToDirectoryChildren(yaffs - * actual object. - */ - --yaffs_Object *yaffs_GetEquivalentObject(yaffs_Object *obj) -+yaffs_obj_t *yaffs_get_equivalent_obj(yaffs_obj_t *obj) - { -- if (obj && obj->variantType == YAFFS_OBJECT_TYPE_HARDLINK) { -+ if (obj && obj->variant_type == YAFFS_OBJECT_TYPE_HARDLINK) { - /* We want the object id of the equivalent object, not this one */ -- obj = obj->variant.hardLinkVariant.equivalentObject; -- yaffs_CheckObjectDetailsLoaded(obj); -+ obj = obj->variant.hardlink_variant.equiv_obj; -+ yaffs_check_obj_details_loaded(obj); - } - return obj; - } - --int yaffs_GetObjectName(yaffs_Object *obj, YCHAR *name, int buffSize) --{ -- memset(name, 0, buffSize * sizeof(YCHAR)); -- -- yaffs_CheckObjectDetailsLoaded(obj); -+/* -+ * A note or two on object names. -+ * * If the object name is missing, we then make one up in the form objnnn -+ * -+ * * ASCII names are stored in the object header's name field from byte zero -+ * * Unicode names are historically stored starting from byte zero. -+ * -+ * Then there are automatic Unicode names... -+ * The purpose of these is to save names in a way that can be read as -+ * ASCII or Unicode names as appropriate, thus allowing a Unicode and ASCII -+ * system to share files. -+ * -+ * These automatic unicode are stored slightly differently... -+ * - If the name can fit in the ASCII character space then they are saved as -+ * ascii names as per above. -+ * - If the name needs Unicode then the name is saved in Unicode -+ * starting at oh->name[1]. - -- if (obj->objectId == YAFFS_OBJECTID_LOSTNFOUND) { -- yaffs_strncpy(name, YAFFS_LOSTNFOUND_NAME, buffSize - 1); -- } else if (obj->hdrChunk <= 0) { -+ */ -+static void yaffs_fix_null_name(yaffs_obj_t * obj,YCHAR * name, int buffer_size) -+{ -+ /* Create an object name if we could not find one. */ -+ if(yaffs_strnlen(name,YAFFS_MAX_NAME_LENGTH) == 0){ - YCHAR locName[20]; - YCHAR numString[20]; - YCHAR *x = &numString[19]; -- unsigned v = obj->objectId; -+ unsigned v = obj->obj_id; - numString[19] = 0; -- while (v > 0) { -+ while(v>0){ - x--; - *x = '0' + (v % 10); - v /= 10; - } - /* make up a name */ - yaffs_strcpy(locName, YAFFS_LOSTNFOUND_PREFIX); -- yaffs_strcat(locName, x); -- yaffs_strncpy(name, locName, buffSize - 1); -+ yaffs_strcat(locName,x); -+ yaffs_strncpy(name, locName, buffer_size - 1); -+ } -+} -+ -+static void yaffs_load_name_from_oh(yaffs_dev_t *dev,YCHAR *name, const YCHAR *ohName, int bufferSize) -+{ -+#ifdef CONFIG_YAFFS_AUTO_UNICODE -+ if(dev->param.auto_unicode){ -+ if(*ohName){ -+ /* It is an ASCII name, so do an ASCII to unicode conversion */ -+ const char *asciiOhName = (const char *)ohName; -+ int n = bufferSize - 1; -+ while(n > 0 && *asciiOhName){ -+ *name = *asciiOhName; -+ name++; -+ asciiOhName++; -+ n--; -+ } -+ } else -+ yaffs_strncpy(name,ohName+1, bufferSize -1); -+ } else -+#endif -+ yaffs_strncpy(name, ohName, bufferSize - 1); -+} -+ -+ -+static void yaffs_load_oh_from_name(yaffs_dev_t *dev, YCHAR *ohName, const YCHAR *name) -+{ -+#ifdef CONFIG_YAFFS_AUTO_UNICODE -+ -+ int isAscii; -+ YCHAR *w; -+ -+ if(dev->param.auto_unicode){ -+ -+ isAscii = 1; -+ w = name; -+ -+ /* Figure out if the name will fit in ascii character set */ -+ while(isAscii && *w){ -+ if((*w) & 0xff00) -+ isAscii = 0; -+ w++; -+ } - -+ if(isAscii){ -+ /* It is an ASCII name, so do a unicode to ascii conversion */ -+ char *asciiOhName = (char *)ohName; -+ int n = YAFFS_MAX_NAME_LENGTH - 1; -+ while(n > 0 && *name){ -+ *asciiOhName= *name; -+ name++; -+ asciiOhName++; -+ n--; -+ } -+ } else{ -+ /* It is a unicode name, so save starting at the second YCHAR */ -+ *ohName = 0; -+ yaffs_strncpy(ohName+1,name, YAFFS_MAX_NAME_LENGTH -2); -+ } - } -+ else -+#endif -+ yaffs_strncpy(ohName,name, YAFFS_MAX_NAME_LENGTH - 1); -+ -+} -+ -+int yaffs_get_obj_name(yaffs_obj_t * obj, YCHAR * name, int buffer_size) -+{ -+ memset(name, 0, buffer_size * sizeof(YCHAR)); -+ -+ yaffs_check_obj_details_loaded(obj); -+ -+ if (obj->obj_id == YAFFS_OBJECTID_LOSTNFOUND) { -+ yaffs_strncpy(name, YAFFS_LOSTNFOUND_NAME, buffer_size - 1); -+ } - #ifdef CONFIG_YAFFS_SHORT_NAMES_IN_RAM -- else if (obj->shortName[0]) -- yaffs_strcpy(name, obj->shortName); -+ else if (obj->short_name[0]) { -+ yaffs_strcpy(name, obj->short_name); -+ } - #endif -- else { -+ else if(obj->hdr_chunk > 0) { - int result; -- __u8 *buffer = yaffs_GetTempBuffer(obj->myDev, __LINE__); -+ __u8 *buffer = yaffs_get_temp_buffer(obj->my_dev, __LINE__); - -- yaffs_ObjectHeader *oh = (yaffs_ObjectHeader *) buffer; -+ yaffs_obj_header *oh = (yaffs_obj_header *) buffer; - -- memset(buffer, 0, obj->myDev->nDataBytesPerChunk); -+ memset(buffer, 0, obj->my_dev->data_bytes_per_chunk); - -- if (obj->hdrChunk > 0) { -- result = yaffs_ReadChunkWithTagsFromNAND(obj->myDev, -- obj->hdrChunk, buffer, -+ if (obj->hdr_chunk > 0) { -+ result = yaffs_rd_chunk_tags_nand(obj->my_dev, -+ obj->hdr_chunk, buffer, - NULL); - } -- yaffs_strncpy(name, oh->name, buffSize - 1); -+ yaffs_load_name_from_oh(obj->my_dev,name,oh->name,buffer_size); - -- yaffs_ReleaseTempBuffer(obj->myDev, buffer, __LINE__); -+ yaffs_release_temp_buffer(obj->my_dev, buffer, __LINE__); - } - -- return yaffs_strlen(name); -+ yaffs_fix_null_name(obj,name,buffer_size); -+ -+ return yaffs_strnlen(name,YAFFS_MAX_NAME_LENGTH); - } - --int yaffs_GetObjectFileLength(yaffs_Object *obj) -+ -+int yaffs_get_obj_length(yaffs_obj_t *obj) - { - /* Dereference any hard linking */ -- obj = yaffs_GetEquivalentObject(obj); -+ obj = yaffs_get_equivalent_obj(obj); - -- if (obj->variantType == YAFFS_OBJECT_TYPE_FILE) -- return obj->variant.fileVariant.fileSize; -- if (obj->variantType == YAFFS_OBJECT_TYPE_SYMLINK) -- return yaffs_strlen(obj->variant.symLinkVariant.alias); -- else { -+ if (obj->variant_type == YAFFS_OBJECT_TYPE_FILE) -+ return obj->variant.file_variant.file_size; -+ if (obj->variant_type == YAFFS_OBJECT_TYPE_SYMLINK){ -+ if(!obj->variant.symlink_variant.alias) -+ return 0; -+ return yaffs_strnlen(obj->variant.symlink_variant.alias,YAFFS_MAX_ALIAS_LENGTH); -+ } else { - /* Only a directory should drop through to here */ -- return obj->myDev->nDataBytesPerChunk; -+ return obj->my_dev->data_bytes_per_chunk; - } - } - --int yaffs_GetObjectLinkCount(yaffs_Object *obj) -+int yaffs_get_obj_link_count(yaffs_obj_t *obj) - { - int count = 0; - struct ylist_head *i; -@@ -6915,24 +4804,24 @@ int yaffs_GetObjectLinkCount(yaffs_Objec - if (!obj->unlinked) - count++; /* the object itself */ - -- ylist_for_each(i, &obj->hardLinks) -+ ylist_for_each(i, &obj->hard_links) - count++; /* add the hard links; */ - - return count; - } - --int yaffs_GetObjectInode(yaffs_Object *obj) -+int yaffs_get_obj_inode(yaffs_obj_t *obj) - { -- obj = yaffs_GetEquivalentObject(obj); -+ obj = yaffs_get_equivalent_obj(obj); - -- return obj->objectId; -+ return obj->obj_id; - } - --unsigned yaffs_GetObjectType(yaffs_Object *obj) -+unsigned yaffs_get_obj_type(yaffs_obj_t *obj) - { -- obj = yaffs_GetEquivalentObject(obj); -+ obj = yaffs_get_equivalent_obj(obj); - -- switch (obj->variantType) { -+ switch (obj->variant_type) { - case YAFFS_OBJECT_TYPE_FILE: - return DT_REG; - break; -@@ -6960,18 +4849,18 @@ unsigned yaffs_GetObjectType(yaffs_Objec - } - } - --YCHAR *yaffs_GetSymlinkAlias(yaffs_Object *obj) -+YCHAR *yaffs_get_symlink_alias(yaffs_obj_t *obj) - { -- obj = yaffs_GetEquivalentObject(obj); -- if (obj->variantType == YAFFS_OBJECT_TYPE_SYMLINK) -- return yaffs_CloneString(obj->variant.symLinkVariant.alias); -+ obj = yaffs_get_equivalent_obj(obj); -+ if (obj->variant_type == YAFFS_OBJECT_TYPE_SYMLINK) -+ return yaffs_clone_str(obj->variant.symlink_variant.alias); - else -- return yaffs_CloneString(_Y("")); -+ return yaffs_clone_str(_Y("")); - } - - #ifndef CONFIG_YAFFS_WINCE - --int yaffs_SetAttributes(yaffs_Object *obj, struct iattr *attr) -+int yaffs_set_attribs(yaffs_obj_t *obj, struct iattr *attr) - { - unsigned int valid = attr->ia_valid; - -@@ -6990,14 +4879,14 @@ int yaffs_SetAttributes(yaffs_Object *ob - obj->yst_mtime = Y_TIME_CONVERT(attr->ia_mtime); - - if (valid & ATTR_SIZE) -- yaffs_ResizeFile(obj, attr->ia_size); -+ yaffs_resize_file(obj, attr->ia_size); - -- yaffs_UpdateObjectHeader(obj, NULL, 1, 0, 0); -+ yaffs_update_oh(obj, NULL, 1, 0, 0, NULL); - - return YAFFS_OK; - - } --int yaffs_GetAttributes(yaffs_Object *obj, struct iattr *attr) -+int yaffs_get_attribs(yaffs_obj_t *obj, struct iattr *attr) - { - unsigned int valid = 0; - -@@ -7015,7 +4904,7 @@ int yaffs_GetAttributes(yaffs_Object *ob - Y_TIME_CONVERT(attr->ia_mtime) = obj->yst_mtime; - valid |= ATTR_MTIME; - -- attr->ia_size = yaffs_GetFileSize(obj); -+ attr->ia_size = yaffs_get_file_size(obj); - valid |= ATTR_SIZE; - - attr->ia_valid = valid; -@@ -7025,20 +4914,137 @@ int yaffs_GetAttributes(yaffs_Object *ob - - #endif - -+ -+static int yaffs_do_xattrib_mod(yaffs_obj_t *obj, int set, const YCHAR *name, const void *value, int size, int flags) -+{ -+ yaffs_xattr_mod xmod; -+ -+ int result; -+ -+ xmod.set = set; -+ xmod.name = name; -+ xmod.data = value; -+ xmod.size = size; -+ xmod.flags = flags; -+ xmod.result = -ENOSPC; -+ -+ result = yaffs_update_oh(obj, NULL, 0, 0, 0, &xmod); -+ -+ if(result > 0) -+ return xmod.result; -+ else -+ return -ENOSPC; -+} -+ -+static int yaffs_apply_xattrib_mod(yaffs_obj_t *obj, char *buffer, yaffs_xattr_mod *xmod) -+{ -+ int retval = 0; -+ int x_offs = sizeof(yaffs_obj_header); -+ yaffs_dev_t *dev = obj->my_dev; -+ int x_size = dev->data_bytes_per_chunk - sizeof(yaffs_obj_header); -+ -+ char * x_buffer = buffer + x_offs; -+ -+ if(xmod->set) -+ retval = nval_set(x_buffer, x_size, xmod->name, xmod->data, xmod->size, xmod->flags); -+ else -+ retval = nval_del(x_buffer, x_size, xmod->name); -+ -+ obj->has_xattr = nval_hasvalues(x_buffer, x_size); -+ obj->xattr_known = 1; -+ -+ xmod->result = retval; -+ -+ return retval; -+} -+ -+static int yaffs_do_xattrib_fetch(yaffs_obj_t *obj, const YCHAR *name, void *value, int size) -+{ -+ char *buffer = NULL; -+ int result; -+ yaffs_ext_tags tags; -+ yaffs_dev_t *dev = obj->my_dev; -+ int x_offs = sizeof(yaffs_obj_header); -+ int x_size = dev->data_bytes_per_chunk - sizeof(yaffs_obj_header); -+ -+ char * x_buffer; -+ -+ int retval = 0; -+ -+ if(obj->hdr_chunk < 1) -+ return -ENODATA; -+ -+ /* If we know that the object has no xattribs then don't do all the -+ * reading and parsing. -+ */ -+ if(obj->xattr_known && !obj->has_xattr){ -+ if(name) -+ return -ENODATA; -+ else -+ return 0; -+ } -+ -+ buffer = (char *) yaffs_get_temp_buffer(dev, __LINE__); -+ if(!buffer) -+ return -ENOMEM; -+ -+ result = yaffs_rd_chunk_tags_nand(dev,obj->hdr_chunk, (__u8 *)buffer, &tags); -+ -+ if(result != YAFFS_OK) -+ retval = -ENOENT; -+ else{ -+ x_buffer = buffer + x_offs; -+ -+ if (!obj->xattr_known){ -+ obj->has_xattr = nval_hasvalues(x_buffer, x_size); -+ obj->xattr_known = 1; -+ } -+ -+ if(name) -+ retval = nval_get(x_buffer, x_size, name, value, size); -+ else -+ retval = nval_list(x_buffer, x_size, value,size); -+ } -+ yaffs_release_temp_buffer(dev,(__u8 *)buffer,__LINE__); -+ return retval; -+} -+ -+int yaffs_set_xattrib(yaffs_obj_t *obj, const YCHAR *name, const void * value, int size, int flags) -+{ -+ return yaffs_do_xattrib_mod(obj, 1, name, value, size, flags); -+} -+ -+int yaffs_remove_xattrib(yaffs_obj_t *obj, const YCHAR *name) -+{ -+ return yaffs_do_xattrib_mod(obj, 0, name, NULL, 0, 0); -+} -+ -+int yaffs_get_xattrib(yaffs_obj_t *obj, const YCHAR *name, void *value, int size) -+{ -+ return yaffs_do_xattrib_fetch(obj, name, value, size); -+} -+ -+int yaffs_list_xattrib(yaffs_obj_t *obj, char *buffer, int size) -+{ -+ return yaffs_do_xattrib_fetch(obj, NULL, buffer,size); -+} -+ -+ -+ - #if 0 --int yaffs_DumpObject(yaffs_Object *obj) -+int yaffs_dump_obj(yaffs_obj_t *obj) - { - YCHAR name[257]; - -- yaffs_GetObjectName(obj, name, 256); -+ yaffs_get_obj_name(obj, name, YAFFS_MAX_NAME_LENGTH + 1); - - T(YAFFS_TRACE_ALWAYS, - (TSTR - ("Object %d, inode %d \"%s\"\n dirty %d valid %d serial %d sum %d" - " chunk %d type %d size %d\n" -- TENDSTR), obj->objectId, yaffs_GetObjectInode(obj), name, -- obj->dirty, obj->valid, obj->serial, obj->sum, obj->hdrChunk, -- yaffs_GetObjectType(obj), yaffs_GetObjectFileLength(obj))); -+ TENDSTR), obj->obj_id, yaffs_get_obj_inode(obj), name, -+ obj->dirty, obj->valid, obj->serial, obj->sum, obj->hdr_chunk, -+ yaffs_get_obj_type(obj), yaffs_get_obj_length(obj))); - - return YAFFS_OK; - } -@@ -7046,72 +5052,74 @@ int yaffs_DumpObject(yaffs_Object *obj) - - /*---------------------------- Initialisation code -------------------------------------- */ - --static int yaffs_CheckDevFunctions(const yaffs_Device *dev) -+static int yaffs_cehck_dev_fns(const yaffs_dev_t *dev) - { - - /* Common functions, gotta have */ -- if (!dev->eraseBlockInNAND || !dev->initialiseNAND) -+ if (!dev->param.erase_fn || !dev->param.initialise_flash_fn) - return 0; - - #ifdef CONFIG_YAFFS_YAFFS2 - - /* Can use the "with tags" style interface for yaffs1 or yaffs2 */ -- if (dev->writeChunkWithTagsToNAND && -- dev->readChunkWithTagsFromNAND && -- !dev->writeChunkToNAND && -- !dev->readChunkFromNAND && -- dev->markNANDBlockBad && dev->queryNANDBlock) -+ if (dev->param.write_chunk_tags_fn && -+ dev->param.read_chunk_tags_fn && -+ !dev->param.write_chunk_fn && -+ !dev->param.read_chunk_fn && -+ dev->param.bad_block_fn && -+ dev->param.query_block_fn) - return 1; - #endif - - /* Can use the "spare" style interface for yaffs1 */ -- if (!dev->isYaffs2 && -- !dev->writeChunkWithTagsToNAND && -- !dev->readChunkWithTagsFromNAND && -- dev->writeChunkToNAND && -- dev->readChunkFromNAND && -- !dev->markNANDBlockBad && !dev->queryNANDBlock) -+ if (!dev->param.is_yaffs2 && -+ !dev->param.write_chunk_tags_fn && -+ !dev->param.read_chunk_tags_fn && -+ dev->param.write_chunk_fn && -+ dev->param.read_chunk_fn && -+ !dev->param.bad_block_fn && -+ !dev->param.query_block_fn) - return 1; - -- return 0; /* bad */ -+ return 0; /* bad */ - } - - --static int yaffs_CreateInitialDirectories(yaffs_Device *dev) -+static int yaffs_create_initial_dir(yaffs_dev_t *dev) - { - /* Initialise the unlinked, deleted, root and lost and found directories */ - -- dev->lostNFoundDir = dev->rootDir = NULL; -- dev->unlinkedDir = dev->deletedDir = NULL; -+ dev->lost_n_found = dev->root_dir = NULL; -+ dev->unlinked_dir = dev->del_dir = NULL; - -- dev->unlinkedDir = -- yaffs_CreateFakeDirectory(dev, YAFFS_OBJECTID_UNLINKED, S_IFDIR); -+ dev->unlinked_dir = -+ yaffs_create_fake_dir(dev, YAFFS_OBJECTID_UNLINKED, S_IFDIR); - -- dev->deletedDir = -- yaffs_CreateFakeDirectory(dev, YAFFS_OBJECTID_DELETED, S_IFDIR); -+ dev->del_dir = -+ yaffs_create_fake_dir(dev, YAFFS_OBJECTID_DELETED, S_IFDIR); - -- dev->rootDir = -- yaffs_CreateFakeDirectory(dev, YAFFS_OBJECTID_ROOT, -+ dev->root_dir = -+ yaffs_create_fake_dir(dev, YAFFS_OBJECTID_ROOT, - YAFFS_ROOT_MODE | S_IFDIR); -- dev->lostNFoundDir = -- yaffs_CreateFakeDirectory(dev, YAFFS_OBJECTID_LOSTNFOUND, -+ dev->lost_n_found = -+ yaffs_create_fake_dir(dev, YAFFS_OBJECTID_LOSTNFOUND, - YAFFS_LOSTNFOUND_MODE | S_IFDIR); - -- if (dev->lostNFoundDir && dev->rootDir && dev->unlinkedDir && dev->deletedDir) { -- yaffs_AddObjectToDirectory(dev->rootDir, dev->lostNFoundDir); -+ if (dev->lost_n_found && dev->root_dir && dev->unlinked_dir && dev->del_dir) { -+ yaffs_add_obj_to_dir(dev->root_dir, dev->lost_n_found); - return YAFFS_OK; - } - - return YAFFS_FAIL; - } - --int yaffs_GutsInitialise(yaffs_Device *dev) -+int yaffs_guts_initialise(yaffs_dev_t *dev) - { - int init_failed = 0; - unsigned x; - int bits; - -- T(YAFFS_TRACE_TRACING, (TSTR("yaffs: yaffs_GutsInitialise()" TENDSTR))); -+ T(YAFFS_TRACE_TRACING, (TSTR("yaffs: yaffs_guts_initialise()" TENDSTR))); - - /* Check stuff that must be set */ - -@@ -7120,52 +5128,52 @@ int yaffs_GutsInitialise(yaffs_Device *d - return YAFFS_FAIL; - } - -- dev->internalStartBlock = dev->startBlock; -- dev->internalEndBlock = dev->endBlock; -- dev->blockOffset = 0; -- dev->chunkOffset = 0; -- dev->nFreeChunks = 0; -- -- dev->gcBlock = -1; -- -- if (dev->startBlock == 0) { -- dev->internalStartBlock = dev->startBlock + 1; -- dev->internalEndBlock = dev->endBlock + 1; -- dev->blockOffset = 1; -- dev->chunkOffset = dev->nChunksPerBlock; -+ dev->internal_start_block = dev->param.start_block; -+ dev->internal_end_block = dev->param.end_block; -+ dev->block_offset = 0; -+ dev->chunk_offset = 0; -+ dev->n_free_chunks = 0; -+ -+ dev->gc_block = 0; -+ -+ if (dev->param.start_block == 0) { -+ dev->internal_start_block = dev->param.start_block + 1; -+ dev->internal_end_block = dev->param.end_block + 1; -+ dev->block_offset = 1; -+ dev->chunk_offset = dev->param.chunks_per_block; - } - - /* Check geometry parameters. */ - -- if ((!dev->inbandTags && dev->isYaffs2 && dev->totalBytesPerChunk < 1024) || -- (!dev->isYaffs2 && dev->totalBytesPerChunk < 512) || -- (dev->inbandTags && !dev->isYaffs2) || -- dev->nChunksPerBlock < 2 || -- dev->nReservedBlocks < 2 || -- dev->internalStartBlock <= 0 || -- dev->internalEndBlock <= 0 || -- dev->internalEndBlock <= (dev->internalStartBlock + dev->nReservedBlocks + 2)) { /* otherwise it is too small */ -+ if ((!dev->param.inband_tags && dev->param.is_yaffs2 && dev->param.total_bytes_per_chunk < 1024) || -+ (!dev->param.is_yaffs2 && dev->param.total_bytes_per_chunk < 512) || -+ (dev->param.inband_tags && !dev->param.is_yaffs2) || -+ dev->param.chunks_per_block < 2 || -+ dev->param.n_reserved_blocks < 2 || -+ dev->internal_start_block <= 0 || -+ dev->internal_end_block <= 0 || -+ dev->internal_end_block <= (dev->internal_start_block + dev->param.n_reserved_blocks + 2)) { /* otherwise it is too small */ - T(YAFFS_TRACE_ALWAYS, - (TSTR -- ("yaffs: NAND geometry problems: chunk size %d, type is yaffs%s, inbandTags %d " -- TENDSTR), dev->totalBytesPerChunk, dev->isYaffs2 ? "2" : "", dev->inbandTags)); -+ ("yaffs: NAND geometry problems: chunk size %d, type is yaffs%s, inband_tags %d " -+ TENDSTR), dev->param.total_bytes_per_chunk, dev->param.is_yaffs2 ? "2" : "", dev->param.inband_tags)); - return YAFFS_FAIL; - } - -- if (yaffs_InitialiseNAND(dev) != YAFFS_OK) { -+ if (yaffs_init_nand(dev) != YAFFS_OK) { - T(YAFFS_TRACE_ALWAYS, - (TSTR("yaffs: InitialiseNAND failed" TENDSTR))); - return YAFFS_FAIL; - } - - /* Sort out space for inband tags, if required */ -- if (dev->inbandTags) -- dev->nDataBytesPerChunk = dev->totalBytesPerChunk - sizeof(yaffs_PackedTags2TagsPart); -+ if (dev->param.inband_tags) -+ dev->data_bytes_per_chunk = dev->param.total_bytes_per_chunk - sizeof(yaffs_PackedTags2TagsPart); - else -- dev->nDataBytesPerChunk = dev->totalBytesPerChunk; -+ dev->data_bytes_per_chunk = dev->param.total_bytes_per_chunk; - - /* Got the right mix of functions? */ -- if (!yaffs_CheckDevFunctions(dev)) { -+ if (!yaffs_cehck_dev_fns(dev)) { - /* Function missing */ - T(YAFFS_TRACE_ALWAYS, - (TSTR -@@ -7175,13 +5183,13 @@ int yaffs_GutsInitialise(yaffs_Device *d - } - - /* This is really a compilation check. */ -- if (!yaffs_CheckStructures()) { -+ if (!yaffs_check_structures()) { - T(YAFFS_TRACE_ALWAYS, -- (TSTR("yaffs_CheckStructures failed\n" TENDSTR))); -+ (TSTR("yaffs_check_structures failed\n" TENDSTR))); - return YAFFS_FAIL; - } - -- if (dev->isMounted) { -+ if (dev->is_mounted) { - T(YAFFS_TRACE_ALWAYS, - (TSTR("yaffs: device already mounted\n" TENDSTR))); - return YAFFS_FAIL; -@@ -7189,59 +5197,62 @@ int yaffs_GutsInitialise(yaffs_Device *d - - /* Finished with most checks. One or two more checks happen later on too. */ - -- dev->isMounted = 1; -+ dev->is_mounted = 1; - - /* OK now calculate a few things for the device */ - - /* - * Calculate all the chunk size manipulation numbers: - */ -- x = dev->nDataBytesPerChunk; -- /* We always use dev->chunkShift and dev->chunkDiv */ -- dev->chunkShift = Shifts(x); -- x >>= dev->chunkShift; -- dev->chunkDiv = x; -- /* We only use chunk mask if chunkDiv is 1 */ -- dev->chunkMask = (1<<dev->chunkShift) - 1; -+ x = dev->data_bytes_per_chunk; -+ /* We always use dev->chunk_shift and dev->chunk_div */ -+ dev->chunk_shift = Shifts(x); -+ x >>= dev->chunk_shift; -+ dev->chunk_div = x; -+ /* We only use chunk mask if chunk_div is 1 */ -+ dev->chunk_mask = (1<<dev->chunk_shift) - 1; - - /* -- * Calculate chunkGroupBits. -- * We need to find the next power of 2 > than internalEndBlock -+ * Calculate chunk_grp_bits. -+ * We need to find the next power of 2 > than internal_end_block - */ - -- x = dev->nChunksPerBlock * (dev->internalEndBlock + 1); -+ x = dev->param.chunks_per_block * (dev->internal_end_block + 1); - - bits = ShiftsGE(x); - - /* Set up tnode width if wide tnodes are enabled. */ -- if (!dev->wideTnodesDisabled) { -+ if (!dev->param.wide_tnodes_disabled) { - /* bits must be even so that we end up with 32-bit words */ - if (bits & 1) - bits++; - if (bits < 16) -- dev->tnodeWidth = 16; -+ dev->tnode_width = 16; - else -- dev->tnodeWidth = bits; -+ dev->tnode_width = bits; - } else -- dev->tnodeWidth = 16; -+ dev->tnode_width = 16; - -- dev->tnodeMask = (1<<dev->tnodeWidth)-1; -+ dev->tnode_mask = (1<<dev->tnode_width)-1; - - /* Level0 Tnodes are 16 bits or wider (if wide tnodes are enabled), - * so if the bitwidth of the - * chunk range we're using is greater than 16 we need -- * to figure out chunk shift and chunkGroupSize -+ * to figure out chunk shift and chunk_grp_size - */ - -- if (bits <= dev->tnodeWidth) -- dev->chunkGroupBits = 0; -+ if (bits <= dev->tnode_width) -+ dev->chunk_grp_bits = 0; - else -- dev->chunkGroupBits = bits - dev->tnodeWidth; -+ dev->chunk_grp_bits = bits - dev->tnode_width; - -+ dev->tnode_size = (dev->tnode_width * YAFFS_NTNODES_LEVEL0)/8; -+ if(dev->tnode_size < sizeof(yaffs_tnode_t)) -+ dev->tnode_size = sizeof(yaffs_tnode_t); - -- dev->chunkGroupSize = 1 << dev->chunkGroupBits; -+ dev->chunk_grp_size = 1 << dev->chunk_grp_bits; - -- if (dev->nChunksPerBlock < dev->chunkGroupSize) { -+ if (dev->param.chunks_per_block < dev->chunk_grp_size) { - /* We have a problem because the soft delete won't work if - * the chunk group size > chunks per block. - * This can be remedied by using larger "virtual blocks". -@@ -7255,85 +5266,89 @@ int yaffs_GutsInitialise(yaffs_Device *d - /* OK, we've finished verifying the device, lets continue with initialisation */ - - /* More device initialisation */ -- dev->garbageCollections = 0; -- dev->passiveGarbageCollections = 0; -- dev->currentDirtyChecker = 0; -- dev->bufferedBlock = -1; -- dev->doingBufferedBlockRewrite = 0; -- dev->nDeletedFiles = 0; -- dev->nBackgroundDeletions = 0; -- dev->nUnlinkedFiles = 0; -- dev->eccFixed = 0; -- dev->eccUnfixed = 0; -- dev->tagsEccFixed = 0; -- dev->tagsEccUnfixed = 0; -- dev->nErasureFailures = 0; -- dev->nErasedBlocks = 0; -- dev->isDoingGC = 0; -- dev->hasPendingPrioritisedGCs = 1; /* Assume the worst for now, will get fixed on first GC */ -+ dev->all_gcs = 0; -+ dev->passive_gc_count = 0; -+ dev->oldest_dirty_gc_count = 0; -+ dev->bg_gcs = 0; -+ dev->gc_block_finder = 0; -+ dev->buffered_block = -1; -+ dev->doing_buffered_block_rewrite = 0; -+ dev->n_deleted_files = 0; -+ dev->n_bg_deletions = 0; -+ dev->n_unlinked_files = 0; -+ dev->n_ecc_fixed = 0; -+ dev->n_ecc_unfixed = 0; -+ dev->n_tags_ecc_fixed = 0; -+ dev->n_tags_ecc_unfixed = 0; -+ dev->n_erase_failures = 0; -+ dev->n_erased_blocks = 0; -+ dev->gc_disable= 0; -+ dev->has_pending_prioritised_gc = 1; /* Assume the worst for now, will get fixed on first GC */ -+ YINIT_LIST_HEAD(&dev->dirty_dirs); -+ dev->oldest_dirty_seq = 0; -+ dev->oldest_dirty_block = 0; - - /* Initialise temporary buffers and caches. */ -- if (!yaffs_InitialiseTempBuffers(dev)) -+ if (!yaffs_init_tmp_buffers(dev)) - init_failed = 1; - -- dev->srCache = NULL; -- dev->gcCleanupList = NULL; -+ dev->cache = NULL; -+ dev->gc_cleanup_list = NULL; - - - if (!init_failed && -- dev->nShortOpCaches > 0) { -+ dev->param.n_caches > 0) { - int i; - void *buf; -- int srCacheBytes = dev->nShortOpCaches * sizeof(yaffs_ChunkCache); -+ int cacheBytes = dev->param.n_caches * sizeof(yaffs_cache_t); - -- if (dev->nShortOpCaches > YAFFS_MAX_SHORT_OP_CACHES) -- dev->nShortOpCaches = YAFFS_MAX_SHORT_OP_CACHES; -+ if (dev->param.n_caches > YAFFS_MAX_SHORT_OP_CACHES) -+ dev->param.n_caches = YAFFS_MAX_SHORT_OP_CACHES; - -- dev->srCache = YMALLOC(srCacheBytes); -+ dev->cache = YMALLOC(cacheBytes); - -- buf = (__u8 *) dev->srCache; -+ buf = (__u8 *) dev->cache; - -- if (dev->srCache) -- memset(dev->srCache, 0, srCacheBytes); -+ if (dev->cache) -+ memset(dev->cache, 0, cacheBytes); - -- for (i = 0; i < dev->nShortOpCaches && buf; i++) { -- dev->srCache[i].object = NULL; -- dev->srCache[i].lastUse = 0; -- dev->srCache[i].dirty = 0; -- dev->srCache[i].data = buf = YMALLOC_DMA(dev->totalBytesPerChunk); -+ for (i = 0; i < dev->param.n_caches && buf; i++) { -+ dev->cache[i].object = NULL; -+ dev->cache[i].last_use = 0; -+ dev->cache[i].dirty = 0; -+ dev->cache[i].data = buf = YMALLOC_DMA(dev->param.total_bytes_per_chunk); - } - if (!buf) - init_failed = 1; - -- dev->srLastUse = 0; -+ dev->cache_last_use = 0; - } - -- dev->cacheHits = 0; -+ dev->cache_hits = 0; - - if (!init_failed) { -- dev->gcCleanupList = YMALLOC(dev->nChunksPerBlock * sizeof(__u32)); -- if (!dev->gcCleanupList) -+ dev->gc_cleanup_list = YMALLOC(dev->param.chunks_per_block * sizeof(__u32)); -+ if (!dev->gc_cleanup_list) - init_failed = 1; - } - -- if (dev->isYaffs2) -- dev->useHeaderFileSize = 1; -+ if (dev->param.is_yaffs2) -+ dev->param.use_header_file_size = 1; - -- if (!init_failed && !yaffs_InitialiseBlocks(dev)) -+ if (!init_failed && !yaffs_init_blocks(dev)) - init_failed = 1; - -- yaffs_InitialiseTnodes(dev); -- yaffs_InitialiseObjects(dev); -+ yaffs_init_tnodes_and_objs(dev); - -- if (!init_failed && !yaffs_CreateInitialDirectories(dev)) -+ if (!init_failed && !yaffs_create_initial_dir(dev)) - init_failed = 1; - - - if (!init_failed) { - /* Now scan the flash. */ -- if (dev->isYaffs2) { -- if (yaffs_CheckpointRestore(dev)) { -- yaffs_CheckObjectDetailsLoaded(dev->rootDir); -+ if (dev->param.is_yaffs2) { -+ if (yaffs2_checkpt_restore(dev)) { -+ yaffs_check_obj_details_loaded(dev->root_dir); - T(YAFFS_TRACE_ALWAYS, - (TSTR("yaffs: restored from checkpoint" TENDSTR))); - } else { -@@ -7341,128 +5356,129 @@ int yaffs_GutsInitialise(yaffs_Device *d - /* Clean up the mess caused by an aborted checkpoint load - * and scan backwards. - */ -- yaffs_DeinitialiseBlocks(dev); -- yaffs_DeinitialiseTnodes(dev); -- yaffs_DeinitialiseObjects(dev); -+ yaffs_deinit_blocks(dev); - -+ yaffs_deinit_tnodes_and_objs(dev); - -- dev->nErasedBlocks = 0; -- dev->nFreeChunks = 0; -- dev->allocationBlock = -1; -- dev->allocationPage = -1; -- dev->nDeletedFiles = 0; -- dev->nUnlinkedFiles = 0; -- dev->nBackgroundDeletions = 0; -- dev->oldestDirtySequence = 0; -+ dev->n_erased_blocks = 0; -+ dev->n_free_chunks = 0; -+ dev->alloc_block = -1; -+ dev->alloc_page = -1; -+ dev->n_deleted_files = 0; -+ dev->n_unlinked_files = 0; -+ dev->n_bg_deletions = 0; - -- if (!init_failed && !yaffs_InitialiseBlocks(dev)) -+ if (!init_failed && !yaffs_init_blocks(dev)) - init_failed = 1; - -- yaffs_InitialiseTnodes(dev); -- yaffs_InitialiseObjects(dev); -+ yaffs_init_tnodes_and_objs(dev); - -- if (!init_failed && !yaffs_CreateInitialDirectories(dev)) -+ if (!init_failed && !yaffs_create_initial_dir(dev)) - init_failed = 1; - -- if (!init_failed && !yaffs_ScanBackwards(dev)) -+ if (!init_failed && !yaffs2_scan_backwards(dev)) - init_failed = 1; - } -- } else if (!yaffs_Scan(dev)) -+ } else if (!yaffs1_scan(dev)) - init_failed = 1; - -- yaffs_StripDeletedObjects(dev); -+ yaffs_strip_deleted_objs(dev); -+ yaffs_fix_hanging_objs(dev); -+ if(dev->param.empty_lost_n_found) -+ yaffs_empty_l_n_f(dev); - } - - if (init_failed) { - /* Clean up the mess */ - T(YAFFS_TRACE_TRACING, -- (TSTR("yaffs: yaffs_GutsInitialise() aborted.\n" TENDSTR))); -+ (TSTR("yaffs: yaffs_guts_initialise() aborted.\n" TENDSTR))); - -- yaffs_Deinitialise(dev); -+ yaffs_deinitialise(dev); - return YAFFS_FAIL; - } - - /* Zero out stats */ -- dev->nPageReads = 0; -- dev->nPageWrites = 0; -- dev->nBlockErasures = 0; -- dev->nGCCopies = 0; -- dev->nRetriedWrites = 0; -- -- dev->nRetiredBlocks = 0; -- -- yaffs_VerifyFreeChunks(dev); -- yaffs_VerifyBlocks(dev); -- -+ dev->n_page_reads = 0; -+ dev->n_page_writes = 0; -+ dev->n_erasures = 0; -+ dev->n_gc_copies = 0; -+ dev->n_retired_writes = 0; -+ -+ dev->n_retired_blocks = 0; -+ -+ yaffs_verify_free_chunks(dev); -+ yaffs_verify_blocks(dev); -+ -+ /* Clean up any aborted checkpoint data */ -+ if(!dev->is_checkpointed && dev->blocks_in_checkpt > 0) -+ yaffs2_checkpt_invalidate(dev); - - T(YAFFS_TRACE_TRACING, -- (TSTR("yaffs: yaffs_GutsInitialise() done.\n" TENDSTR))); -+ (TSTR("yaffs: yaffs_guts_initialise() done.\n" TENDSTR))); - return YAFFS_OK; - - } - --void yaffs_Deinitialise(yaffs_Device *dev) -+void yaffs_deinitialise(yaffs_dev_t *dev) - { -- if (dev->isMounted) { -+ if (dev->is_mounted) { - int i; - -- yaffs_DeinitialiseBlocks(dev); -- yaffs_DeinitialiseTnodes(dev); -- yaffs_DeinitialiseObjects(dev); -- if (dev->nShortOpCaches > 0 && -- dev->srCache) { -+ yaffs_deinit_blocks(dev); -+ yaffs_deinit_tnodes_and_objs(dev); -+ if (dev->param.n_caches > 0 && -+ dev->cache) { - -- for (i = 0; i < dev->nShortOpCaches; i++) { -- if (dev->srCache[i].data) -- YFREE(dev->srCache[i].data); -- dev->srCache[i].data = NULL; -+ for (i = 0; i < dev->param.n_caches; i++) { -+ if (dev->cache[i].data) -+ YFREE(dev->cache[i].data); -+ dev->cache[i].data = NULL; - } - -- YFREE(dev->srCache); -- dev->srCache = NULL; -+ YFREE(dev->cache); -+ dev->cache = NULL; - } - -- YFREE(dev->gcCleanupList); -+ YFREE(dev->gc_cleanup_list); - - for (i = 0; i < YAFFS_N_TEMP_BUFFERS; i++) -- YFREE(dev->tempBuffer[i].buffer); -+ YFREE(dev->temp_buffer[i].buffer); - -- dev->isMounted = 0; -+ dev->is_mounted = 0; - -- if (dev->deinitialiseNAND) -- dev->deinitialiseNAND(dev); -+ if (dev->param.deinitialise_flash_fn) -+ dev->param.deinitialise_flash_fn(dev); - } - } - --static int yaffs_CountFreeChunks(yaffs_Device *dev) -+int yaffs_count_free_chunks(yaffs_dev_t *dev) - { -- int nFree; -+ int nFree=0; - int b; - -- yaffs_BlockInfo *blk; -- -- for (nFree = 0, b = dev->internalStartBlock; b <= dev->internalEndBlock; -- b++) { -- blk = yaffs_GetBlockInfo(dev, b); -+ yaffs_block_info_t *blk; - -- switch (blk->blockState) { -+ blk = dev->block_info; -+ for (b = dev->internal_start_block; b <= dev->internal_end_block; b++) { -+ switch (blk->block_state) { - case YAFFS_BLOCK_STATE_EMPTY: - case YAFFS_BLOCK_STATE_ALLOCATING: - case YAFFS_BLOCK_STATE_COLLECTING: - case YAFFS_BLOCK_STATE_FULL: - nFree += -- (dev->nChunksPerBlock - blk->pagesInUse + -- blk->softDeletions); -+ (dev->param.chunks_per_block - blk->pages_in_use + -+ blk->soft_del_pages); - break; - default: - break; - } -+ blk++; - } - - return nFree; - } - --int yaffs_GetNumberOfFreeChunks(yaffs_Device *dev) -+int yaffs_get_n_free_chunks(yaffs_dev_t *dev) - { - /* This is what we report to the outside world */ - -@@ -7472,30 +5488,28 @@ int yaffs_GetNumberOfFreeChunks(yaffs_De - int i; - - #if 1 -- nFree = dev->nFreeChunks; -+ nFree = dev->n_free_chunks; - #else -- nFree = yaffs_CountFreeChunks(dev); -+ nFree = yaffs_count_free_chunks(dev); - #endif - -- nFree += dev->nDeletedFiles; -+ nFree += dev->n_deleted_files; - - /* Now count the number of dirty chunks in the cache and subtract those */ - -- for (nDirtyCacheChunks = 0, i = 0; i < dev->nShortOpCaches; i++) { -- if (dev->srCache[i].dirty) -+ for (nDirtyCacheChunks = 0, i = 0; i < dev->param.n_caches; i++) { -+ if (dev->cache[i].dirty) - nDirtyCacheChunks++; - } - - nFree -= nDirtyCacheChunks; - -- nFree -= ((dev->nReservedBlocks + 1) * dev->nChunksPerBlock); -+ nFree -= ((dev->param.n_reserved_blocks + 1) * dev->param.chunks_per_block); - - /* Now we figure out how much to reserve for the checkpoint and report that... */ -- blocksForCheckpoint = yaffs_CalcCheckpointBlocksRequired(dev) - dev->blocksInCheckpoint; -- if (blocksForCheckpoint < 0) -- blocksForCheckpoint = 0; -+ blocksForCheckpoint = yaffs_calc_checkpt_blocks_required(dev); - -- nFree -= (blocksForCheckpoint * dev->nChunksPerBlock); -+ nFree -= (blocksForCheckpoint * dev->param.chunks_per_block); - - if (nFree < 0) - nFree = 0; -@@ -7504,49 +5518,27 @@ int yaffs_GetNumberOfFreeChunks(yaffs_De - - } - --static int yaffs_freeVerificationFailures; -- --static void yaffs_VerifyFreeChunks(yaffs_Device *dev) --{ -- int counted; -- int difference; -- -- if (yaffs_SkipVerification(dev)) -- return; -- -- counted = yaffs_CountFreeChunks(dev); -- -- difference = dev->nFreeChunks - counted; -- -- if (difference) { -- T(YAFFS_TRACE_ALWAYS, -- (TSTR("Freechunks verification failure %d %d %d" TENDSTR), -- dev->nFreeChunks, counted, difference)); -- yaffs_freeVerificationFailures++; -- } --} - - /*---------------------------------------- YAFFS test code ----------------------*/ - --#define yaffs_CheckStruct(structure, syze, name) \ -+#define yaffs_check_struct(structure, syze, name) \ - do { \ - if (sizeof(structure) != syze) { \ - T(YAFFS_TRACE_ALWAYS, (TSTR("%s should be %d but is %d\n" TENDSTR),\ -- name, syze, sizeof(structure))); \ -+ name, syze, (int) sizeof(structure))); \ - return YAFFS_FAIL; \ - } \ - } while (0) - --static int yaffs_CheckStructures(void) -+static int yaffs_check_structures(void) - { --/* yaffs_CheckStruct(yaffs_Tags,8,"yaffs_Tags"); */ --/* yaffs_CheckStruct(yaffs_TagsUnion,8,"yaffs_TagsUnion"); */ --/* yaffs_CheckStruct(yaffs_Spare,16,"yaffs_Spare"); */ --#ifndef CONFIG_YAFFS_TNODE_LIST_DEBUG -- yaffs_CheckStruct(yaffs_Tnode, 2 * YAFFS_NTNODES_LEVEL0, "yaffs_Tnode"); --#endif -+/* yaffs_check_struct(yaffs_tags_t,8,"yaffs_tags_t"); */ -+/* yaffs_check_struct(yaffs_tags_union_t,8,"yaffs_tags_union_t"); */ -+/* yaffs_check_struct(yaffs_spare,16,"yaffs_spare"); */ -+/* yaffs_check_struct(yaffs_tnode_t, 2 * YAFFS_NTNODES_LEVEL0, "yaffs_tnode_t"); */ -+ - #ifndef CONFIG_YAFFS_WINCE -- yaffs_CheckStruct(yaffs_ObjectHeader, 512, "yaffs_ObjectHeader"); -+ yaffs_check_struct(yaffs_obj_header, 512, "yaffs_obj_header"); - #endif - return YAFFS_OK; - } ---- a/fs/yaffs2/yaffs_guts.h -+++ b/fs/yaffs2/yaffs_guts.h -@@ -1,7 +1,7 @@ - /* - * YAFFS: Yet another Flash File System . A NAND-flash specific file system. - * -- * Copyright (C) 2002-2007 Aleph One Ltd. -+ * Copyright (C) 2002-2010 Aleph One Ltd. - * for Toby Churchill Ltd and Brightstar Engineering - * - * Created by Charles Manning <charles@aleph1.co.uk> -@@ -16,8 +16,9 @@ - #ifndef __YAFFS_GUTS_H__ - #define __YAFFS_GUTS_H__ - --#include "devextras.h" - #include "yportenv.h" -+#include "devextras.h" -+#include "yaffs_list.h" - - #define YAFFS_OK 1 - #define YAFFS_FAIL 0 -@@ -52,7 +53,6 @@ - - #define YAFFS_MAX_CHUNK_ID 0x000FFFFF - --#define YAFFS_UNUSED_OBJECT_ID 0x0003FFFF - - #define YAFFS_ALLOCATION_NOBJECTS 100 - #define YAFFS_ALLOCATION_NTNODES 100 -@@ -62,8 +62,9 @@ - - - #define YAFFS_OBJECT_SPACE 0x40000 -+#define YAFFS_MAX_OBJECT_ID (YAFFS_OBJECT_SPACE -1) - --#define YAFFS_CHECKPOINT_VERSION 3 -+#define YAFFS_CHECKPOINT_VERSION 4 - - #ifdef CONFIG_YAFFS_UNICODE - #define YAFFS_MAX_NAME_LENGTH 127 -@@ -81,12 +82,11 @@ - #define YAFFS_OBJECTID_UNLINKED 3 - #define YAFFS_OBJECTID_DELETED 4 - --/* Sseudo object ids for checkpointing */ -+/* Pseudo object ids for checkpointing */ - #define YAFFS_OBJECTID_SB_HEADER 0x10 - #define YAFFS_OBJECTID_CHECKPOINT_DATA 0x20 - #define YAFFS_SEQUENCE_CHECKPOINT_DATA 0x21 - --/* */ - - #define YAFFS_MAX_SHORT_OP_CACHES 20 - -@@ -113,18 +113,14 @@ - - /* ChunkCache is used for short read/write operations.*/ - typedef struct { -- struct yaffs_ObjectStruct *object; -- int chunkId; -- int lastUse; -+ struct yaffs_obj_s *object; -+ int chunk_id; -+ int last_use; - int dirty; -- int nBytes; /* Only valid if the cache is dirty */ -+ int n_bytes; /* Only valid if the cache is dirty */ - int locked; /* Can't push out or flush while locked. */ --#ifdef CONFIG_YAFFS_YAFFS2 - __u8 *data; --#else -- __u8 data[YAFFS_BYTES_PER_CHUNK]; --#endif --} yaffs_ChunkCache; -+} yaffs_cache_t; - - - -@@ -135,18 +131,18 @@ typedef struct { - - #ifndef CONFIG_YAFFS_NO_YAFFS1 - typedef struct { -- unsigned chunkId:20; -- unsigned serialNumber:2; -- unsigned byteCountLSB:10; -- unsigned objectId:18; -+ unsigned chunk_id:20; -+ unsigned serial_number:2; -+ unsigned n_bytes_lsb:10; -+ unsigned obj_id:18; - unsigned ecc:12; -- unsigned byteCountMSB:2; --} yaffs_Tags; -+ unsigned n_bytes_msb:2; -+} yaffs_tags_t; - - typedef union { -- yaffs_Tags asTags; -- __u8 asBytes[8]; --} yaffs_TagsUnion; -+ yaffs_tags_t as_tags; -+ __u8 as_bytes[8]; -+} yaffs_tags_union_t; - - #endif - -@@ -157,7 +153,7 @@ typedef enum { - YAFFS_ECC_RESULT_NO_ERROR, - YAFFS_ECC_RESULT_FIXED, - YAFFS_ECC_RESULT_UNFIXED --} yaffs_ECCResult; -+} yaffs_ecc_result; - - typedef enum { - YAFFS_OBJECT_TYPE_UNKNOWN, -@@ -166,64 +162,64 @@ typedef enum { - YAFFS_OBJECT_TYPE_DIRECTORY, - YAFFS_OBJECT_TYPE_HARDLINK, - YAFFS_OBJECT_TYPE_SPECIAL --} yaffs_ObjectType; -+} yaffs_obj_type; - - #define YAFFS_OBJECT_TYPE_MAX YAFFS_OBJECT_TYPE_SPECIAL - - typedef struct { - -- unsigned validMarker0; -- unsigned chunkUsed; /* Status of the chunk: used or unused */ -- unsigned objectId; /* If 0 then this is not part of an object (unused) */ -- unsigned chunkId; /* If 0 then this is a header, else a data chunk */ -- unsigned byteCount; /* Only valid for data chunks */ -+ unsigned validity1; -+ unsigned chunk_used; /* Status of the chunk: used or unused */ -+ unsigned obj_id; /* If 0 then this is not part of an object (unused) */ -+ unsigned chunk_id; /* If 0 then this is a header, else a data chunk */ -+ unsigned n_bytes; /* Only valid for data chunks */ - - /* The following stuff only has meaning when we read */ -- yaffs_ECCResult eccResult; -- unsigned blockBad; -+ yaffs_ecc_result ecc_result; -+ unsigned block_bad; - - /* YAFFS 1 stuff */ -- unsigned chunkDeleted; /* The chunk is marked deleted */ -- unsigned serialNumber; /* Yaffs1 2-bit serial number */ -+ unsigned is_deleted; /* The chunk is marked deleted */ -+ unsigned serial_number; /* Yaffs1 2-bit serial number */ - - /* YAFFS2 stuff */ -- unsigned sequenceNumber; /* The sequence number of this block */ -+ unsigned seq_number; /* The sequence number of this block */ - - /* Extra info if this is an object header (YAFFS2 only) */ - -- unsigned extraHeaderInfoAvailable; /* There is extra info available if this is not zero */ -- unsigned extraParentObjectId; /* The parent object */ -- unsigned extraIsShrinkHeader; /* Is it a shrink header? */ -- unsigned extraShadows; /* Does this shadow another object? */ -+ unsigned extra_available; /* There is extra info available if this is not zero */ -+ unsigned extra_parent_id; /* The parent object */ -+ unsigned extra_is_shrink; /* Is it a shrink header? */ -+ unsigned extra_shadows; /* Does this shadow another object? */ - -- yaffs_ObjectType extraObjectType; /* What object type? */ -+ yaffs_obj_type extra_obj_type; /* What object type? */ - -- unsigned extraFileLength; /* Length if it is a file */ -- unsigned extraEquivalentObjectId; /* Equivalent object Id if it is a hard link */ -+ unsigned extra_length; /* Length if it is a file */ -+ unsigned extra_equiv_id; /* Equivalent object Id if it is a hard link */ - -- unsigned validMarker1; -+ unsigned validty1; - --} yaffs_ExtendedTags; -+} yaffs_ext_tags; - - /* Spare structure for YAFFS1 */ - typedef struct { -- __u8 tagByte0; -- __u8 tagByte1; -- __u8 tagByte2; -- __u8 tagByte3; -- __u8 pageStatus; /* set to 0 to delete the chunk */ -- __u8 blockStatus; -- __u8 tagByte4; -- __u8 tagByte5; -+ __u8 tb0; -+ __u8 tb1; -+ __u8 tb2; -+ __u8 tb3; -+ __u8 page_status; /* set to 0 to delete the chunk */ -+ __u8 block_status; -+ __u8 tb4; -+ __u8 tb5; - __u8 ecc1[3]; -- __u8 tagByte6; -- __u8 tagByte7; -+ __u8 tb6; -+ __u8 tb7; - __u8 ecc2[3]; --} yaffs_Spare; -+} yaffs_spare; - - /*Special structure for passing through to mtd */ --struct yaffs_NANDSpare { -- yaffs_Spare spare; -+struct yaffs_nand_spare { -+ yaffs_spare spare; - int eccres1; - int eccres2; - }; -@@ -234,6 +230,8 @@ typedef enum { - YAFFS_BLOCK_STATE_UNKNOWN = 0, - - YAFFS_BLOCK_STATE_SCANNING, -+ /* Being scanned */ -+ - YAFFS_BLOCK_STATE_NEEDS_SCANNING, - /* The block might have something on it (ie it is allocating or full, perhaps empty) - * but it needs to be scanned to determine its true state. -@@ -249,67 +247,69 @@ typedef enum { - /* This block is partially allocated. - * At least one page holds valid data. - * This is the one currently being used for page -- * allocation. Should never be more than one of these -+ * allocation. Should never be more than one of these. -+ * If a block is only partially allocated at mount it is treated as full. - */ - - YAFFS_BLOCK_STATE_FULL, - /* All the pages in this block have been allocated. -+ * If a block was only partially allocated when mounted we treat -+ * it as fully allocated. - */ - - YAFFS_BLOCK_STATE_DIRTY, -- /* All pages have been allocated and deleted. -+ /* The block was full and now all chunks have been deleted. - * Erase me, reuse me. - */ - - YAFFS_BLOCK_STATE_CHECKPOINT, -- /* This block is assigned to holding checkpoint data. -- */ -+ /* This block is assigned to holding checkpoint data. */ - - YAFFS_BLOCK_STATE_COLLECTING, - /* This block is being garbage collected */ - - YAFFS_BLOCK_STATE_DEAD - /* This block has failed and is not in use */ --} yaffs_BlockState; -+} yaffs_block_state_t; - - #define YAFFS_NUMBER_OF_BLOCK_STATES (YAFFS_BLOCK_STATE_DEAD + 1) - - - typedef struct { - -- int softDeletions:10; /* number of soft deleted pages */ -- int pagesInUse:10; /* number of pages in use */ -- unsigned blockState:4; /* One of the above block states. NB use unsigned because enum is sometimes an int */ -- __u32 needsRetiring:1; /* Data has failed on this block, need to get valid data off */ -+ int soft_del_pages:10; /* number of soft deleted pages */ -+ int pages_in_use:10; /* number of pages in use */ -+ unsigned block_state:4; /* One of the above block states. NB use unsigned because enum is sometimes an int */ -+ __u32 needs_retiring:1; /* Data has failed on this block, need to get valid data off */ - /* and retire the block. */ -- __u32 skipErasedCheck:1; /* If this is set we can skip the erased check on this block */ -- __u32 gcPrioritise:1; /* An ECC check or blank check has failed on this block. -+ __u32 skip_erased_check:1; /* If this is set we can skip the erased check on this block */ -+ __u32 gc_prioritise:1; /* An ECC check or blank check has failed on this block. - It should be prioritised for GC */ -- __u32 chunkErrorStrikes:3; /* How many times we've had ecc etc failures on this block and tried to reuse it */ -+ __u32 chunk_error_strikes:3; /* How many times we've had ecc etc failures on this block and tried to reuse it */ - - #ifdef CONFIG_YAFFS_YAFFS2 -- __u32 hasShrinkHeader:1; /* This block has at least one shrink object header */ -- __u32 sequenceNumber; /* block sequence number for yaffs2 */ -+ __u32 has_shrink_hdr:1; /* This block has at least one shrink object header */ -+ __u32 seq_number; /* block sequence number for yaffs2 */ - #endif - --} yaffs_BlockInfo; -+} yaffs_block_info_t; - - /* -------------------------- Object structure -------------------------------*/ - /* This is the object structure as stored on NAND */ - - typedef struct { -- yaffs_ObjectType type; -+ yaffs_obj_type type; - - /* Apply to everything */ -- int parentObjectId; -- __u16 sum__NoLongerUsed; /* checksum of name. No longer used */ -+ int parent_obj_id; -+ __u16 sum_no_longer_used; /* checksum of name. No longer used */ - YCHAR name[YAFFS_MAX_NAME_LENGTH + 1]; - - /* The following apply to directories, files, symlinks - not hard links */ - __u32 yst_mode; /* protection */ - - #ifdef CONFIG_YAFFS_WINCE -- __u32 notForWinCE[5]; -+ __u32 not_for_wince[5]; - #else - __u32 yst_uid; - __u32 yst_gid; -@@ -319,10 +319,10 @@ typedef struct { - #endif - - /* File size applies to files only */ -- int fileSize; -+ int file_size; - - /* Equivalent object id applies to hard links only. */ -- int equivalentObjectId; -+ int equiv_id; - - /* Alias is for symlinks only. */ - YCHAR alias[YAFFS_MAX_ALIAS_LENGTH + 1]; -@@ -334,40 +334,29 @@ typedef struct { - __u32 win_atime[2]; - __u32 win_mtime[2]; - #else -- __u32 roomToGrow[6]; -+ __u32 room_to_grow[6]; - - #endif -- __u32 inbandShadowsObject; -- __u32 inbandIsShrink; -+ __u32 inband_shadowed_obj_id; -+ __u32 inband_is_shrink; - -- __u32 reservedSpace[2]; -- int shadowsObject; /* This object header shadows the specified object if > 0 */ -+ __u32 reserved[2]; -+ int shadows_obj; /* This object header shadows the specified object if > 0 */ - -- /* isShrink applies to object headers written when we shrink the file (ie resize) */ -- __u32 isShrink; -+ /* is_shrink applies to object headers written when we shrink the file (ie resize) */ -+ __u32 is_shrink; - --} yaffs_ObjectHeader; -+} yaffs_obj_header; - - /*--------------------------- Tnode -------------------------- */ - --union yaffs_Tnode_union { --#ifdef CONFIG_YAFFS_TNODE_LIST_DEBUG -- union yaffs_Tnode_union *internal[YAFFS_NTNODES_INTERNAL + 1]; --#else -- union yaffs_Tnode_union *internal[YAFFS_NTNODES_INTERNAL]; --#endif --/* __u16 level0[YAFFS_NTNODES_LEVEL0]; */ -+union yaffs_tnode_union { -+ union yaffs_tnode_union *internal[YAFFS_NTNODES_INTERNAL]; - - }; - --typedef union yaffs_Tnode_union yaffs_Tnode; -+typedef union yaffs_tnode_union yaffs_tnode_t; - --struct yaffs_TnodeList_struct { -- struct yaffs_TnodeList_struct *next; -- yaffs_Tnode *tnodes; --}; -- --typedef struct yaffs_TnodeList_struct yaffs_TnodeList; - - /*------------------------ Object -----------------------------*/ - /* An object can be one of: -@@ -378,82 +367,85 @@ typedef struct yaffs_TnodeList_struct ya - */ - - typedef struct { -- __u32 fileSize; -- __u32 scannedFileSize; -- __u32 shrinkSize; -- int topLevel; -- yaffs_Tnode *top; --} yaffs_FileStructure; -+ __u32 file_size; -+ __u32 scanned_size; -+ __u32 shrink_size; -+ int top_level; -+ yaffs_tnode_t *top; -+} yaffs_file_s; - - typedef struct { - struct ylist_head children; /* list of child links */ --} yaffs_DirectoryStructure; -+ struct ylist_head dirty; /* Entry for list of dirty directories */ -+} yaffs_dir_s; - - typedef struct { - YCHAR *alias; --} yaffs_SymLinkStructure; -+} yaffs_symlink_t; - - typedef struct { -- struct yaffs_ObjectStruct *equivalentObject; -- __u32 equivalentObjectId; --} yaffs_HardLinkStructure; -+ struct yaffs_obj_s *equiv_obj; -+ __u32 equiv_id; -+} yaffs_hard_link_s; - - typedef union { -- yaffs_FileStructure fileVariant; -- yaffs_DirectoryStructure directoryVariant; -- yaffs_SymLinkStructure symLinkVariant; -- yaffs_HardLinkStructure hardLinkVariant; --} yaffs_ObjectVariant; -+ yaffs_file_s file_variant; -+ yaffs_dir_s dir_variant; -+ yaffs_symlink_t symlink_variant; -+ yaffs_hard_link_s hardlink_variant; -+} yaffs_obj_variant; -+ -+ - --struct yaffs_ObjectStruct { -+struct yaffs_obj_s { - __u8 deleted:1; /* This should only apply to unlinked files. */ -- __u8 softDeleted:1; /* it has also been soft deleted */ -+ __u8 soft_del:1; /* it has also been soft deleted */ - __u8 unlinked:1; /* An unlinked file. The file should be in the unlinked directory.*/ - __u8 fake:1; /* A fake object has no presence on NAND. */ -- __u8 renameAllowed:1; /* Some objects are not allowed to be renamed. */ -- __u8 unlinkAllowed:1; -+ __u8 rename_allowed:1; /* Some objects are not allowed to be renamed. */ -+ __u8 unlink_allowed:1; - __u8 dirty:1; /* the object needs to be written to flash */ - __u8 valid:1; /* When the file system is being loaded up, this - * object might be created before the data - * is available (ie. file data records appear before the header). - */ -- __u8 lazyLoaded:1; /* This object has been lazy loaded and is missing some detail */ -+ __u8 lazy_loaded:1; /* This object has been lazy loaded and is missing some detail */ - -- __u8 deferedFree:1; /* For Linux kernel. Object is removed from NAND, but is -+ __u8 defered_free:1; /* For Linux kernel. Object is removed from NAND, but is - * still in the inode cache. Free of object is defered. - * until the inode is released. - */ -- __u8 beingCreated:1; /* This object is still being created so skip some checks. */ -+ __u8 being_created:1; /* This object is still being created so skip some checks. */ -+ __u8 is_shadowed:1; /* This object is shadowed on the way to being renamed. */ -+ -+ __u8 xattr_known:1; /* We know if this has object has xattribs or not. */ -+ __u8 has_xattr:1; /* This object has xattribs. Valid if xattr_known. */ - - __u8 serial; /* serial number of chunk in NAND. Cached here */ - __u16 sum; /* sum of the name to speed searching */ - -- struct yaffs_DeviceStruct *myDev; /* The device I'm on */ -+ struct yaffs_dev_s *my_dev; /* The device I'm on */ - -- struct ylist_head hashLink; /* list of objects in this hash bucket */ -+ struct ylist_head hash_link; /* list of objects in this hash bucket */ - -- struct ylist_head hardLinks; /* all the equivalent hard linked objects */ -+ struct ylist_head hard_links; /* all the equivalent hard linked objects */ - - /* directory structure stuff */ - /* also used for linking up the free list */ -- struct yaffs_ObjectStruct *parent; -+ struct yaffs_obj_s *parent; - struct ylist_head siblings; - - /* Where's my object header in NAND? */ -- int hdrChunk; -+ int hdr_chunk; - -- int nDataChunks; /* Number of data chunks attached to the file. */ -+ int n_data_chunks; /* Number of data chunks attached to the file. */ - -- __u32 objectId; /* the object id value */ -+ __u32 obj_id; /* the object id value */ - - __u32 yst_mode; - - #ifdef CONFIG_YAFFS_SHORT_NAMES_IN_RAM -- YCHAR shortName[YAFFS_SHORT_NAME_LENGTH + 1]; --#endif -- --#ifndef __KERNEL__ -- __u32 inUse; -+ YCHAR short_name[YAFFS_SHORT_NAME_LENGTH + 1]; - #endif - - #ifdef CONFIG_YAFFS_WINCE -@@ -470,53 +462,43 @@ struct yaffs_ObjectStruct { - - __u32 yst_rdev; - --#ifdef __KERNEL__ -- struct inode *myInode; -+ void *my_inode; - --#endif -+ yaffs_obj_type variant_type; - -- yaffs_ObjectType variantType; -+ yaffs_obj_variant variant; - -- yaffs_ObjectVariant variant; -- --}; -- --typedef struct yaffs_ObjectStruct yaffs_Object; -- --struct yaffs_ObjectList_struct { -- yaffs_Object *objects; -- struct yaffs_ObjectList_struct *next; - }; - --typedef struct yaffs_ObjectList_struct yaffs_ObjectList; -+typedef struct yaffs_obj_s yaffs_obj_t; - - typedef struct { - struct ylist_head list; - int count; --} yaffs_ObjectBucket; -+} yaffs_obj_bucket; - - --/* yaffs_CheckpointObject holds the definition of an object as dumped -+/* yaffs_checkpt_obj_t holds the definition of an object as dumped - * by checkpointing. - */ - - typedef struct { -- int structType; -- __u32 objectId; -- __u32 parentId; -- int hdrChunk; -- yaffs_ObjectType variantType:3; -+ int struct_type; -+ __u32 obj_id; -+ __u32 parent_id; -+ int hdr_chunk; -+ yaffs_obj_type variant_type:3; - __u8 deleted:1; -- __u8 softDeleted:1; -+ __u8 soft_del:1; - __u8 unlinked:1; - __u8 fake:1; -- __u8 renameAllowed:1; -- __u8 unlinkAllowed:1; -+ __u8 rename_allowed:1; -+ __u8 unlink_allowed:1; - __u8 serial; - -- int nDataChunks; -- __u32 fileSizeOrEquivalentObjectId; --} yaffs_CheckpointObject; -+ int n_data_chunks; -+ __u32 size_or_equiv_obj; -+} yaffs_checkpt_obj_t; - - /*--------------------- Temporary buffers ---------------- - * -@@ -526,379 +508,462 @@ typedef struct { - typedef struct { - __u8 *buffer; - int line; /* track from whence this buffer was allocated */ -- int maxLine; --} yaffs_TempBuffer; -+ int max_line; -+} yaffs_buffer_t; - - /*----------------- Device ---------------------------------*/ - --struct yaffs_DeviceStruct { -- struct ylist_head devList; -- const char *name; -- -- /* Entry parameters set up way early. Yaffs sets up the rest.*/ -- int nDataBytesPerChunk; /* Should be a power of 2 >= 512 */ -- int nChunksPerBlock; /* does not need to be a power of 2 */ -- int spareBytesPerChunk; /* spare area size */ -- int startBlock; /* Start block we're allowed to use */ -- int endBlock; /* End block we're allowed to use */ -- int nReservedBlocks; /* We want this tuneable so that we can reduce */ -- /* reserved blocks on NOR and RAM. */ -- - -- /* Stuff used by the shared space checkpointing mechanism */ -- /* If this value is zero, then this mechanism is disabled */ -+struct yaffs_param_s { -+ const YCHAR *name; - --/* int nCheckpointReservedBlocks; */ /* Blocks to reserve for checkpoint data */ -+ /* -+ * Entry parameters set up way early. Yaffs sets up the rest. -+ * The structure should be zeroed out before use so that unused -+ * and defualt values are zero. -+ */ -+ -+ int inband_tags; /* Use unband tags */ -+ __u32 total_bytes_per_chunk; /* Should be >= 512, does not need to be a power of 2 */ -+ int chunks_per_block; /* does not need to be a power of 2 */ -+ int spare_bytes_per_chunk; /* spare area size */ -+ int start_block; /* Start block we're allowed to use */ -+ int end_block; /* End block we're allowed to use */ -+ int n_reserved_blocks; /* We want this tuneable so that we can reduce */ -+ /* reserved blocks on NOR and RAM. */ - - -- int nShortOpCaches; /* If <= 0, then short op caching is disabled, else -- * the number of short op caches (don't use too many) -+ int n_caches; /* If <= 0, then short op caching is disabled, else -+ * the number of short op caches (don't use too many). -+ * 10 to 20 is a good bet. - */ -+ int use_nand_ecc; /* Flag to decide whether or not to use NANDECC on data (yaffs1) */ -+ int no_tags_ecc; /* Flag to decide whether or not to do ECC on packed tags (yaffs2) */ - -- int useHeaderFileSize; /* Flag to determine if we should use file sizes from the header */ -+ int is_yaffs2; /* Use yaffs2 mode on this device */ - -- int useNANDECC; /* Flag to decide whether or not to use NANDECC */ -+ int empty_lost_n_found; /* Auto-empty lost+found directory on mount */ - -- void *genericDevice; /* Pointer to device context -- * On an mtd this holds the mtd pointer. -- */ -- void *superBlock; -+ int refresh_period; /* How often we should check to do a block refresh */ -+ -+ /* Checkpoint control. Can be set before or after initialisation */ -+ __u8 skip_checkpt_rd; -+ __u8 skip_checkpt_wr; -+ -+ int enable_xattr; /* Enable xattribs */ - - /* NAND access functions (Must be set before calling YAFFS)*/ - -- int (*writeChunkToNAND) (struct yaffs_DeviceStruct *dev, -- int chunkInNAND, const __u8 *data, -- const yaffs_Spare *spare); -- int (*readChunkFromNAND) (struct yaffs_DeviceStruct *dev, -- int chunkInNAND, __u8 *data, -- yaffs_Spare *spare); -- int (*eraseBlockInNAND) (struct yaffs_DeviceStruct *dev, -- int blockInNAND); -- int (*initialiseNAND) (struct yaffs_DeviceStruct *dev); -- int (*deinitialiseNAND) (struct yaffs_DeviceStruct *dev); -+ int (*write_chunk_fn) (struct yaffs_dev_s *dev, -+ int nand_chunk, const __u8 *data, -+ const yaffs_spare *spare); -+ int (*read_chunk_fn) (struct yaffs_dev_s *dev, -+ int nand_chunk, __u8 *data, -+ yaffs_spare *spare); -+ int (*erase_fn) (struct yaffs_dev_s *dev, -+ int flash_block); -+ int (*initialise_flash_fn) (struct yaffs_dev_s *dev); -+ int (*deinitialise_flash_fn) (struct yaffs_dev_s *dev); - - #ifdef CONFIG_YAFFS_YAFFS2 -- int (*writeChunkWithTagsToNAND) (struct yaffs_DeviceStruct *dev, -- int chunkInNAND, const __u8 *data, -- const yaffs_ExtendedTags *tags); -- int (*readChunkWithTagsFromNAND) (struct yaffs_DeviceStruct *dev, -- int chunkInNAND, __u8 *data, -- yaffs_ExtendedTags *tags); -- int (*markNANDBlockBad) (struct yaffs_DeviceStruct *dev, int blockNo); -- int (*queryNANDBlock) (struct yaffs_DeviceStruct *dev, int blockNo, -- yaffs_BlockState *state, __u32 *sequenceNumber); --#endif -- -- int isYaffs2; -- -- /* The removeObjectCallback function must be supplied by OS flavours that -- * need it. The Linux kernel does not use this, but yaffs direct does use -- * it to implement the faster readdir -+ int (*write_chunk_tags_fn) (struct yaffs_dev_s *dev, -+ int nand_chunk, const __u8 *data, -+ const yaffs_ext_tags *tags); -+ int (*read_chunk_tags_fn) (struct yaffs_dev_s *dev, -+ int nand_chunk, __u8 *data, -+ yaffs_ext_tags *tags); -+ int (*bad_block_fn) (struct yaffs_dev_s *dev, int block_no); -+ int (*query_block_fn) (struct yaffs_dev_s *dev, int block_no, -+ yaffs_block_state_t *state, __u32 *seq_number); -+#endif -+ -+ /* The remove_obj_fn function must be supplied by OS flavours that -+ * need it. -+ * yaffs direct uses it to implement the faster readdir. -+ * Linux uses it to protect the directory during unlocking. - */ -- void (*removeObjectCallback)(struct yaffs_ObjectStruct *obj); -+ void (*remove_obj_fn)(struct yaffs_obj_s *obj); - -- /* Callback to mark the superblock dirsty */ -- void (*markSuperBlockDirty)(void *superblock); -+ /* Callback to mark the superblock dirty */ -+ void (*sb_dirty_fn)(struct yaffs_dev_s *dev); -+ -+ /* Callback to control garbage collection. */ -+ unsigned (*gc_control)(struct yaffs_dev_s *dev); -+ -+ /* Debug control flags. Don't use unless you know what you're doing */ -+ int use_header_file_size; /* Flag to determine if we should use file sizes from the header */ -+ int disable_lazy_load; /* Disable lazy loading on this device */ -+ int wide_tnodes_disabled; /* Set to disable wide tnodes */ -+ int disable_soft_del; /* yaffs 1 only: Set to disable the use of softdeletion. */ -+ -+ int defered_dir_update; /* Set to defer directory updates */ - -- int wideTnodesDisabled; /* Set to disable wide tnodes */ -+#ifdef CONFIG_YAFFS_AUTO_UNICODE -+ int auto_unicode; -+#endif -+ int always_check_erased; /* Force chunk erased check always on */ -+}; - -- YCHAR *pathDividers; /* String of legal path dividers */ -+typedef struct yaffs_param_s yaffs_param_t; - -+struct yaffs_dev_s { -+ struct yaffs_param_s param; - -- /* End of stuff that must be set before initialisation. */ -+ /* Context storage. Holds extra OS specific data for this device */ - -- /* Checkpoint control. Can be set before or after initialisation */ -- __u8 skipCheckpointRead; -- __u8 skipCheckpointWrite; -+ void *os_context; -+ void *driver_context; -+ -+ struct ylist_head dev_list; - - /* Runtime parameters. Set up by YAFFS. */ -+ int data_bytes_per_chunk; - -- __u16 chunkGroupBits; /* 0 for devices <= 32MB. else log2(nchunks) - 16 */ -- __u16 chunkGroupSize; /* == 2^^chunkGroupBits */ -+ /* Non-wide tnode stuff */ -+ __u16 chunk_grp_bits; /* Number of bits that need to be resolved if -+ * the tnodes are not wide enough. -+ */ -+ __u16 chunk_grp_size; /* == 2^^chunk_grp_bits */ - - /* Stuff to support wide tnodes */ -- __u32 tnodeWidth; -- __u32 tnodeMask; -+ __u32 tnode_width; -+ __u32 tnode_mask; -+ __u32 tnode_size; - - /* Stuff for figuring out file offset to chunk conversions */ -- __u32 chunkShift; /* Shift value */ -- __u32 chunkDiv; /* Divisor after shifting: 1 for power-of-2 sizes */ -- __u32 chunkMask; /* Mask to use for power-of-2 case */ -- -- /* Stuff to handle inband tags */ -- int inbandTags; -- __u32 totalBytesPerChunk; -- --#ifdef __KERNEL__ -- -- struct semaphore sem; /* Semaphore for waiting on erasure.*/ -- struct semaphore grossLock; /* Gross locking semaphore */ -- __u8 *spareBuffer; /* For mtdif2 use. Don't know the size of the buffer -- * at compile time so we have to allocate it. -- */ -- void (*putSuperFunc) (struct super_block *sb); --#endif -+ __u32 chunk_shift; /* Shift value */ -+ __u32 chunk_div; /* Divisor after shifting: 1 for power-of-2 sizes */ -+ __u32 chunk_mask; /* Mask to use for power-of-2 case */ - -- int isMounted; - -- int isCheckpointed; -+ -+ int is_mounted; -+ int read_only; -+ int is_checkpointed; - - - /* Stuff to support block offsetting to support start block zero */ -- int internalStartBlock; -- int internalEndBlock; -- int blockOffset; -- int chunkOffset; -+ int internal_start_block; -+ int internal_end_block; -+ int block_offset; -+ int chunk_offset; - - - /* Runtime checkpointing stuff */ -- int checkpointPageSequence; /* running sequence number of checkpoint pages */ -- int checkpointByteCount; -- int checkpointByteOffset; -- __u8 *checkpointBuffer; -- int checkpointOpenForWrite; -- int blocksInCheckpoint; -- int checkpointCurrentChunk; -- int checkpointCurrentBlock; -- int checkpointNextBlock; -- int *checkpointBlockList; -- int checkpointMaxBlocks; -- __u32 checkpointSum; -- __u32 checkpointXor; -+ int checkpt_page_seq; /* running sequence number of checkpoint pages */ -+ int checkpt_byte_count; -+ int checkpt_byte_offs; -+ __u8 *checkpt_buffer; -+ int checkpt_open_write; -+ int blocks_in_checkpt; -+ int checkpt_cur_chunk; -+ int checkpt_cur_block; -+ int checkpt_next_block; -+ int *checkpt_block_list; -+ int checkpt_max_blocks; -+ __u32 checkpt_sum; -+ __u32 checkpt_xor; - -- int nCheckpointBlocksRequired; /* Number of blocks needed to store current checkpoint set */ -+ int checkpoint_blocks_required; /* Number of blocks needed to store current checkpoint set */ - - /* Block Info */ -- yaffs_BlockInfo *blockInfo; -- __u8 *chunkBits; /* bitmap of chunks in use */ -- unsigned blockInfoAlt:1; /* was allocated using alternative strategy */ -- unsigned chunkBitsAlt:1; /* was allocated using alternative strategy */ -- int chunkBitmapStride; /* Number of bytes of chunkBits per block. -- * Must be consistent with nChunksPerBlock. -+ yaffs_block_info_t *block_info; -+ __u8 *chunk_bits; /* bitmap of chunks in use */ -+ unsigned block_info_alt:1; /* was allocated using alternative strategy */ -+ unsigned chunk_bits_alt:1; /* was allocated using alternative strategy */ -+ int chunk_bit_stride; /* Number of bytes of chunk_bits per block. -+ * Must be consistent with chunks_per_block. - */ - -- int nErasedBlocks; -- int allocationBlock; /* Current block being allocated off */ -- __u32 allocationPage; -- int allocationBlockFinder; /* Used to search for next allocation block */ -- -- /* Runtime state */ -- int nTnodesCreated; -- yaffs_Tnode *freeTnodes; -- int nFreeTnodes; -- yaffs_TnodeList *allocatedTnodeList; -- -- int isDoingGC; -- int gcBlock; -- int gcChunk; -- -- int nObjectsCreated; -- yaffs_Object *freeObjects; -- int nFreeObjects; -- -- int nHardLinks; -- -- yaffs_ObjectList *allocatedObjectList; -- -- yaffs_ObjectBucket objectBucket[YAFFS_NOBJECT_BUCKETS]; -- -- int nFreeChunks; -- -- int currentDirtyChecker; /* Used to find current dirtiest block */ -- -- __u32 *gcCleanupList; /* objects to delete at the end of a GC. */ -- int nonAggressiveSkip; /* GC state/mode */ -- -- /* Statistcs */ -- int nPageWrites; -- int nPageReads; -- int nBlockErasures; -- int nErasureFailures; -- int nGCCopies; -- int garbageCollections; -- int passiveGarbageCollections; -- int nRetriedWrites; -- int nRetiredBlocks; -- int eccFixed; -- int eccUnfixed; -- int tagsEccFixed; -- int tagsEccUnfixed; -- int nDeletions; -- int nUnmarkedDeletions; -- -- int hasPendingPrioritisedGCs; /* We think this device might have pending prioritised gcs */ -+ int n_erased_blocks; -+ int alloc_block; /* Current block being allocated off */ -+ __u32 alloc_page; -+ int alloc_block_finder; /* Used to search for next allocation block */ -+ -+ /* Object and Tnode memory management */ -+ void *allocator; -+ int n_obj; -+ int n_tnodes; -+ -+ int n_hardlinks; -+ -+ yaffs_obj_bucket obj_bucket[YAFFS_NOBJECT_BUCKETS]; -+ __u32 bucket_finder; -+ -+ int n_free_chunks; -+ -+ /* Garbage collection control */ -+ __u32 *gc_cleanup_list; /* objects to delete at the end of a GC. */ -+ __u32 n_clean_ups; -+ -+ unsigned has_pending_prioritised_gc; /* We think this device might have pending prioritised gcs */ -+ unsigned gc_disable; -+ unsigned gc_block_finder; -+ unsigned gc_dirtiest; -+ unsigned gc_pages_in_use; -+ unsigned gc_not_done; -+ unsigned gc_block; -+ unsigned gc_chunk; -+ unsigned gc_skip; - - /* Special directories */ -- yaffs_Object *rootDir; -- yaffs_Object *lostNFoundDir; -+ yaffs_obj_t *root_dir; -+ yaffs_obj_t *lost_n_found; - - /* Buffer areas for storing data to recover from write failures TODO -- * __u8 bufferedData[YAFFS_CHUNKS_PER_BLOCK][YAFFS_BYTES_PER_CHUNK]; -- * yaffs_Spare bufferedSpare[YAFFS_CHUNKS_PER_BLOCK]; -+ * __u8 buffered_data[YAFFS_CHUNKS_PER_BLOCK][YAFFS_BYTES_PER_CHUNK]; -+ * yaffs_spare buffered_spare[YAFFS_CHUNKS_PER_BLOCK]; - */ - -- int bufferedBlock; /* Which block is buffered here? */ -- int doingBufferedBlockRewrite; -- -- yaffs_ChunkCache *srCache; -- int srLastUse; -+ int buffered_block; /* Which block is buffered here? */ -+ int doing_buffered_block_rewrite; - -- int cacheHits; -+ yaffs_cache_t *cache; -+ int cache_last_use; - - /* Stuff for background deletion and unlinked files.*/ -- yaffs_Object *unlinkedDir; /* Directory where unlinked and deleted files live. */ -- yaffs_Object *deletedDir; /* Directory where deleted objects are sent to disappear. */ -- yaffs_Object *unlinkedDeletion; /* Current file being background deleted.*/ -- int nDeletedFiles; /* Count of files awaiting deletion;*/ -- int nUnlinkedFiles; /* Count of unlinked files. */ -- int nBackgroundDeletions; /* Count of background deletions. */ -- -+ yaffs_obj_t *unlinked_dir; /* Directory where unlinked and deleted files live. */ -+ yaffs_obj_t *del_dir; /* Directory where deleted objects are sent to disappear. */ -+ yaffs_obj_t *unlinked_deletion; /* Current file being background deleted.*/ -+ int n_deleted_files; /* Count of files awaiting deletion;*/ -+ int n_unlinked_files; /* Count of unlinked files. */ -+ int n_bg_deletions; /* Count of background deletions. */ - - /* Temporary buffer management */ -- yaffs_TempBuffer tempBuffer[YAFFS_N_TEMP_BUFFERS]; -- int maxTemp; -- int tempInUse; -- int unmanagedTempAllocations; -- int unmanagedTempDeallocations; -+ yaffs_buffer_t temp_buffer[YAFFS_N_TEMP_BUFFERS]; -+ int max_temp; -+ int temp_in_use; -+ int unmanaged_buffer_allocs; -+ int unmanaged_buffer_deallocs; - - /* yaffs2 runtime stuff */ -- unsigned sequenceNumber; /* Sequence number of currently allocating block */ -- unsigned oldestDirtySequence; -+ unsigned seq_number; /* Sequence number of currently allocating block */ -+ unsigned oldest_dirty_seq; -+ unsigned oldest_dirty_block; -+ -+ /* Block refreshing */ -+ int refresh_skip; /* A skip down counter. Refresh happens when this gets to zero. */ -+ -+ /* Dirty directory handling */ -+ struct ylist_head dirty_dirs; /* List of dirty directories */ -+ -+ -+ /* Statistcs */ -+ __u32 n_page_writes; -+ __u32 n_page_reads; -+ __u32 n_erasures; -+ __u32 n_erase_failures; -+ __u32 n_gc_copies; -+ __u32 all_gcs; -+ __u32 passive_gc_count; -+ __u32 oldest_dirty_gc_count; -+ __u32 n_gc_blocks; -+ __u32 bg_gcs; -+ __u32 n_retired_writes; -+ __u32 n_retired_blocks; -+ __u32 n_ecc_fixed; -+ __u32 n_ecc_unfixed; -+ __u32 n_tags_ecc_fixed; -+ __u32 n_tags_ecc_unfixed; -+ __u32 n_deletions; -+ __u32 n_unmarked_deletions; -+ __u32 refresh_count; -+ __u32 cache_hits; - - }; - --typedef struct yaffs_DeviceStruct yaffs_Device; -+typedef struct yaffs_dev_s yaffs_dev_t; - - /* The static layout of block usage etc is stored in the super block header */ - typedef struct { - int StructType; - int version; -- int checkpointStartBlock; -- int checkpointEndBlock; -- int startBlock; -- int endBlock; -+ int checkpt_start_block; -+ int checkpt_end_block; -+ int start_block; -+ int end_block; - int rfu[100]; --} yaffs_SuperBlockHeader; -+} yaffs_sb_header; - - /* The CheckpointDevice structure holds the device information that changes at runtime and - * must be preserved over unmount/mount cycles. - */ - typedef struct { -- int structType; -- int nErasedBlocks; -- int allocationBlock; /* Current block being allocated off */ -- __u32 allocationPage; -- int nFreeChunks; -- -- int nDeletedFiles; /* Count of files awaiting deletion;*/ -- int nUnlinkedFiles; /* Count of unlinked files. */ -- int nBackgroundDeletions; /* Count of background deletions. */ -+ int struct_type; -+ int n_erased_blocks; -+ int alloc_block; /* Current block being allocated off */ -+ __u32 alloc_page; -+ int n_free_chunks; -+ -+ int n_deleted_files; /* Count of files awaiting deletion;*/ -+ int n_unlinked_files; /* Count of unlinked files. */ -+ int n_bg_deletions; /* Count of background deletions. */ - - /* yaffs2 runtime stuff */ -- unsigned sequenceNumber; /* Sequence number of currently allocating block */ -- unsigned oldestDirtySequence; -+ unsigned seq_number; /* Sequence number of currently allocating block */ - --} yaffs_CheckpointDevice; -+} yaffs_checkpt_dev_t; - - - typedef struct { -- int structType; -+ int struct_type; - __u32 magic; - __u32 version; - __u32 head; --} yaffs_CheckpointValidity; -+} yaffs_checkpt_validty_t; -+ -+ -+struct yaffs_shadow_fixer_s { -+ int obj_id; -+ int shadowed_id; -+ struct yaffs_shadow_fixer_s *next; -+}; -+ -+/* Structure for doing xattr modifications */ -+typedef struct { -+ int set; /* If 0 then this is a deletion */ -+ const YCHAR *name; -+ const void *data; -+ int size; -+ int flags; -+ int result; -+}yaffs_xattr_mod; - - - /*----------------------- YAFFS Functions -----------------------*/ - --int yaffs_GutsInitialise(yaffs_Device *dev); --void yaffs_Deinitialise(yaffs_Device *dev); -+int yaffs_guts_initialise(yaffs_dev_t *dev); -+void yaffs_deinitialise(yaffs_dev_t *dev); - --int yaffs_GetNumberOfFreeChunks(yaffs_Device *dev); -+int yaffs_get_n_free_chunks(yaffs_dev_t *dev); - --int yaffs_RenameObject(yaffs_Object *oldDir, const YCHAR *oldName, -- yaffs_Object *newDir, const YCHAR *newName); -+int yaffs_rename_obj(yaffs_obj_t *old_dir, const YCHAR *old_name, -+ yaffs_obj_t *new_dir, const YCHAR *new_name); - --int yaffs_Unlink(yaffs_Object *dir, const YCHAR *name); --int yaffs_DeleteObject(yaffs_Object *obj); -+int yaffs_unlinker(yaffs_obj_t *dir, const YCHAR *name); -+int yaffs_del_obj(yaffs_obj_t *obj); - --int yaffs_GetObjectName(yaffs_Object *obj, YCHAR *name, int buffSize); --int yaffs_GetObjectFileLength(yaffs_Object *obj); --int yaffs_GetObjectInode(yaffs_Object *obj); --unsigned yaffs_GetObjectType(yaffs_Object *obj); --int yaffs_GetObjectLinkCount(yaffs_Object *obj); -+int yaffs_get_obj_name(yaffs_obj_t *obj, YCHAR *name, int buffer_size); -+int yaffs_get_obj_length(yaffs_obj_t *obj); -+int yaffs_get_obj_inode(yaffs_obj_t *obj); -+unsigned yaffs_get_obj_type(yaffs_obj_t *obj); -+int yaffs_get_obj_link_count(yaffs_obj_t *obj); - --int yaffs_SetAttributes(yaffs_Object *obj, struct iattr *attr); --int yaffs_GetAttributes(yaffs_Object *obj, struct iattr *attr); -+int yaffs_set_attribs(yaffs_obj_t *obj, struct iattr *attr); -+int yaffs_get_attribs(yaffs_obj_t *obj, struct iattr *attr); - - /* File operations */ --int yaffs_ReadDataFromFile(yaffs_Object *obj, __u8 *buffer, loff_t offset, -- int nBytes); --int yaffs_WriteDataToFile(yaffs_Object *obj, const __u8 *buffer, loff_t offset, -- int nBytes, int writeThrough); --int yaffs_ResizeFile(yaffs_Object *obj, loff_t newSize); -+int yaffs_file_rd(yaffs_obj_t *obj, __u8 *buffer, loff_t offset, -+ int n_bytes); -+int yaffs_wr_file(yaffs_obj_t *obj, const __u8 *buffer, loff_t offset, -+ int n_bytes, int write_trhrough); -+int yaffs_resize_file(yaffs_obj_t *obj, loff_t new_size); - --yaffs_Object *yaffs_MknodFile(yaffs_Object *parent, const YCHAR *name, -+yaffs_obj_t *yaffs_create_file(yaffs_obj_t *parent, const YCHAR *name, - __u32 mode, __u32 uid, __u32 gid); --int yaffs_FlushFile(yaffs_Object *obj, int updateTime); -+ -+int yaffs_flush_file(yaffs_obj_t *obj, int update_time, int data_sync); - - /* Flushing and checkpointing */ --void yaffs_FlushEntireDeviceCache(yaffs_Device *dev); -+void yaffs_flush_whole_cache(yaffs_dev_t *dev); - --int yaffs_CheckpointSave(yaffs_Device *dev); --int yaffs_CheckpointRestore(yaffs_Device *dev); -+int yaffs_checkpoint_save(yaffs_dev_t *dev); -+int yaffs_checkpoint_restore(yaffs_dev_t *dev); - - /* Directory operations */ --yaffs_Object *yaffs_MknodDirectory(yaffs_Object *parent, const YCHAR *name, -+yaffs_obj_t *yaffs_create_dir(yaffs_obj_t *parent, const YCHAR *name, - __u32 mode, __u32 uid, __u32 gid); --yaffs_Object *yaffs_FindObjectByName(yaffs_Object *theDir, const YCHAR *name); --int yaffs_ApplyToDirectoryChildren(yaffs_Object *theDir, -- int (*fn) (yaffs_Object *)); -+yaffs_obj_t *yaffs_find_by_name(yaffs_obj_t *the_dir, const YCHAR *name); -+int yaffs_ApplyToDirectoryChildren(yaffs_obj_t *the_dir, -+ int (*fn) (yaffs_obj_t *)); - --yaffs_Object *yaffs_FindObjectByNumber(yaffs_Device *dev, __u32 number); -+yaffs_obj_t *yaffs_find_by_number(yaffs_dev_t *dev, __u32 number); - - /* Link operations */ --yaffs_Object *yaffs_Link(yaffs_Object *parent, const YCHAR *name, -- yaffs_Object *equivalentObject); -+yaffs_obj_t *yaffs_link_obj(yaffs_obj_t *parent, const YCHAR *name, -+ yaffs_obj_t *equiv_obj); - --yaffs_Object *yaffs_GetEquivalentObject(yaffs_Object *obj); -+yaffs_obj_t *yaffs_get_equivalent_obj(yaffs_obj_t *obj); - - /* Symlink operations */ --yaffs_Object *yaffs_MknodSymLink(yaffs_Object *parent, const YCHAR *name, -+yaffs_obj_t *yaffs_create_symlink(yaffs_obj_t *parent, const YCHAR *name, - __u32 mode, __u32 uid, __u32 gid, - const YCHAR *alias); --YCHAR *yaffs_GetSymlinkAlias(yaffs_Object *obj); -+YCHAR *yaffs_get_symlink_alias(yaffs_obj_t *obj); - - /* Special inodes (fifos, sockets and devices) */ --yaffs_Object *yaffs_MknodSpecial(yaffs_Object *parent, const YCHAR *name, -+yaffs_obj_t *yaffs_create_special(yaffs_obj_t *parent, const YCHAR *name, - __u32 mode, __u32 uid, __u32 gid, __u32 rdev); - -+ -+int yaffs_set_xattrib(yaffs_obj_t *obj, const YCHAR *name, const void * value, int size, int flags); -+int yaffs_get_xattrib(yaffs_obj_t *obj, const YCHAR *name, void *value, int size); -+int yaffs_list_xattrib(yaffs_obj_t *obj, char *buffer, int size); -+int yaffs_remove_xattrib(yaffs_obj_t *obj, const YCHAR *name); -+ - /* Special directories */ --yaffs_Object *yaffs_Root(yaffs_Device *dev); --yaffs_Object *yaffs_LostNFound(yaffs_Device *dev); -+yaffs_obj_t *yaffs_root(yaffs_dev_t *dev); -+yaffs_obj_t *yaffs_lost_n_found(yaffs_dev_t *dev); - - #ifdef CONFIG_YAFFS_WINCE - /* CONFIG_YAFFS_WINCE special stuff */ --void yfsd_WinFileTimeNow(__u32 target[2]); -+void yfsd_win_file_time_now(__u32 target[2]); - #endif - --#ifdef __KERNEL__ -+void yaffs_handle_defered_free(yaffs_obj_t *obj); - --void yaffs_HandleDeferedFree(yaffs_Object *obj); --#endif -+void yaffs_update_dirty_dirs(yaffs_dev_t *dev); -+ -+int yaffs_bg_gc(yaffs_dev_t *dev, unsigned urgency); - - /* Debug dump */ --int yaffs_DumpObject(yaffs_Object *obj); -+int yaffs_dump_obj(yaffs_obj_t *obj); - --void yaffs_GutsTest(yaffs_Device *dev); -+void yaffs_guts_test(yaffs_dev_t *dev); - --/* A few useful functions */ --void yaffs_InitialiseTags(yaffs_ExtendedTags *tags); --void yaffs_DeleteChunk(yaffs_Device *dev, int chunkId, int markNAND, int lyn); --int yaffs_CheckFF(__u8 *buffer, int nBytes); --void yaffs_HandleChunkError(yaffs_Device *dev, yaffs_BlockInfo *bi); -+/* A few useful functions to be used within the core files*/ -+void yaffs_chunk_del(yaffs_dev_t *dev, int chunk_id, int mark_flash, int lyn); -+int yaffs_check_ff(__u8 *buffer, int n_bytes); -+void yaffs_handle_chunk_error(yaffs_dev_t *dev, yaffs_block_info_t *bi); -+ -+__u8 *yaffs_get_temp_buffer(yaffs_dev_t *dev, int line_no); -+void yaffs_release_temp_buffer(yaffs_dev_t *dev, __u8 *buffer, int line_no); -+ -+yaffs_obj_t *yaffs_find_or_create_by_number(yaffs_dev_t *dev, -+ int number, -+ yaffs_obj_type type); -+int yaffs_put_chunk_in_file(yaffs_obj_t *in, int inode_chunk, -+ int nand_chunk, int in_scan); -+void yaffs_set_obj_name(yaffs_obj_t *obj, const YCHAR *name); -+void yaffs_set_obj_name_from_oh(yaffs_obj_t *obj, const yaffs_obj_header *oh); -+void yaffs_add_obj_to_dir(yaffs_obj_t *directory, -+ yaffs_obj_t *obj); -+YCHAR *yaffs_clone_str(const YCHAR *str); -+void yaffs_link_fixup(yaffs_dev_t *dev, yaffs_obj_t *hard_list); -+void yaffs_block_became_dirty(yaffs_dev_t *dev, int block_no); -+int yaffs_update_oh(yaffs_obj_t *in, const YCHAR *name, -+ int force, int is_shrink, int shadows, -+ yaffs_xattr_mod *xop); -+void yaffs_handle_shadowed_obj(yaffs_dev_t *dev, int obj_id, -+ int backward_scanning); -+int yaffs_check_alloc_available(yaffs_dev_t *dev, int n_chunks); -+yaffs_tnode_t *yaffs_get_tnode(yaffs_dev_t *dev); -+yaffs_tnode_t *yaffs_add_find_tnode_0(yaffs_dev_t *dev, -+ yaffs_file_s *file_struct, -+ __u32 chunk_id, -+ yaffs_tnode_t *passed_tn); -+ -+int yaffs_do_file_wr(yaffs_obj_t *in, const __u8 *buffer, loff_t offset, -+ int n_bytes, int write_trhrough); -+void yaffs_resize_file_down( yaffs_obj_t *obj, loff_t new_size); -+void yaffs_skip_rest_of_block(yaffs_dev_t *dev); -+ -+int yaffs_count_free_chunks(yaffs_dev_t *dev); -+ -+yaffs_tnode_t *yaffs_find_tnode_0(yaffs_dev_t *dev, -+ yaffs_file_s *file_struct, -+ __u32 chunk_id); - --__u8 *yaffs_GetTempBuffer(yaffs_Device *dev, int lineNo); --void yaffs_ReleaseTempBuffer(yaffs_Device *dev, __u8 *buffer, int lineNo); -+__u32 yaffs_get_group_base(yaffs_dev_t *dev, yaffs_tnode_t *tn, unsigned pos); - - #endif ---- a/fs/yaffs2/yaffsinterface.h -+++ b/fs/yaffs2/yaffsinterface.h -@@ -1,7 +1,7 @@ - /* - * YAFFS: Yet another Flash File System . A NAND-flash specific file system. - * -- * Copyright (C) 2002-2007 Aleph One Ltd. -+ * Copyright (C) 2002-2010 Aleph One Ltd. - * for Toby Churchill Ltd and Brightstar Engineering - * - * Created by Charles Manning <charles@aleph1.co.uk> -@@ -16,6 +16,6 @@ - #ifndef __YAFFSINTERFACE_H__ - #define __YAFFSINTERFACE_H__ - --int yaffs_Initialise(unsigned nBlocks); -+int yaffs_initialise(unsigned nBlocks); - - #endif ---- /dev/null -+++ b/fs/yaffs2/yaffs_linux_allocator.c -@@ -0,0 +1,200 @@ -+/* -+ * YAFFS: Yet another Flash File System . A NAND-flash specific file system. -+ * -+ * Copyright (C) 2002-2010 Aleph One Ltd. -+ * for Toby Churchill Ltd and Brightstar Engineering -+ * -+ * Created by Charles Manning <charles@aleph1.co.uk> -+ * -+ * This program is free software; you can redistribute it and/or modify -+ * it under the terms of the GNU Lesser General Public License version 2.1 as -+ * published by the Free Software Foundation. -+ * -+ * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL. -+ * -+ * Note: Tis code is currently unused. Being checked in in case it becomes useful. -+ */ -+ -+ -+#include "yaffs_allocator.h" -+#include "yaffs_guts.h" -+#include "yaffs_trace.h" -+#include "yportenv.h" -+#include "yaffs_linux.h" -+/* -+ * Start out with the same allocator as yaffs direct. -+ * Todo: Change to Linux slab allocator. -+ */ -+ -+ -+ -+#define NAMELEN 20 -+struct yaffs_AllocatorStruct { -+ char tnode_name[NAMELEN+1]; -+ char object_name[NAMELEN+1]; -+ struct kmem_cache *tnode_cache; -+ struct kmem_cache *object_cache; -+}; -+ -+typedef struct yaffs_AllocatorStruct yaffs_Allocator; -+ -+int mount_id; -+ -+void yaffs_deinit_raw_tnodes_and_objs(yaffs_dev_t *dev) -+{ -+ yaffs_Allocator *allocator = (yaffs_Allocator *)dev->allocator; -+ -+ T(YAFFS_TRACE_ALLOCATE,(TSTR("Deinitialising yaffs allocator\n"))); -+ -+ if(allocator){ -+ if(allocator->tnode_cache){ -+ kmem_cache_destroy(allocator->tnode_cache); -+ allocator->tnode_cache = NULL; -+ } else { -+ T(YAFFS_TRACE_ALWAYS, -+ (TSTR("NULL tnode cache\n"))); -+ YBUG(); -+ } -+ -+ if(allocator->object_cache){ -+ kmem_cache_destroy(allocator->object_cache); -+ allocator->object_cache = NULL; -+ } else { -+ T(YAFFS_TRACE_ALWAYS, -+ (TSTR("NULL object cache\n"))); -+ YBUG(); -+ } -+ -+ YFREE(allocator); -+ -+ } else { -+ T(YAFFS_TRACE_ALWAYS, -+ (TSTR("Deinitialising NULL allocator\n"))); -+ YBUG(); -+ } -+ dev->allocator = NULL; -+} -+ -+ -+static void fake_ctor0(void *data){data = data;} -+static void fake_ctor1(void *data){data = data;} -+static void fake_ctor2(void *data){data = data;} -+static void fake_ctor3(void *data){data = data;} -+static void fake_ctor4(void *data){data = data;} -+static void fake_ctor5(void *data){data = data;} -+static void fake_ctor6(void *data){data = data;} -+static void fake_ctor7(void *data){data = data;} -+static void fake_ctor8(void *data){data = data;} -+static void fake_ctor9(void *data){data = data;} -+ -+static void (*fake_ctor_list[10]) (void *) = { -+ fake_ctor0, -+ fake_ctor1, -+ fake_ctor2, -+ fake_ctor3, -+ fake_ctor4, -+ fake_ctor5, -+ fake_ctor6, -+ fake_ctor7, -+ fake_ctor8, -+ fake_ctor9, -+}; -+ -+void yaffs_init_raw_tnodes_and_objs(yaffs_dev_t *dev) -+{ -+ yaffs_Allocator *allocator; -+ unsigned mount_id = yaffs_dev_to_lc(dev)->mount_id; -+ -+ T(YAFFS_TRACE_ALLOCATE,(TSTR("Initialising yaffs allocator\n"))); -+ -+ if(dev->allocator) -+ YBUG(); -+ else if(mount_id >= 10){ -+ T(YAFFS_TRACE_ALWAYS,(TSTR("Bad mount_id %u\n"),mount_id)); -+ } else { -+ allocator = YMALLOC(sizeof(yaffs_Allocator)); -+ memset(allocator,0,sizeof(yaffs_Allocator)); -+ dev->allocator = allocator; -+ -+ if(!dev->allocator){ -+ T(YAFFS_TRACE_ALWAYS, -+ (TSTR("yaffs allocator creation failed\n"))); -+ YBUG(); -+ return; -+ -+ } -+ -+ sprintf(allocator->tnode_name,"yaffs_t_%u",mount_id); -+ sprintf(allocator->object_name,"yaffs_o_%u",mount_id); -+ -+ allocator->tnode_cache = -+ kmem_cache_create(allocator->tnode_name, -+ dev->tnode_size, -+ 0, 0, -+ fake_ctor_list[mount_id]); -+ if(allocator->tnode_cache) -+ T(YAFFS_TRACE_ALLOCATE, -+ (TSTR("tnode cache \"%s\" %p\n"), -+ allocator->tnode_name,allocator->tnode_cache)); -+ else { -+ T(YAFFS_TRACE_ALWAYS, -+ (TSTR("yaffs cache creation failed\n"))); -+ YBUG(); -+ } -+ -+ -+ allocator->object_cache = -+ kmem_cache_create(allocator->object_name, -+ sizeof(yaffs_obj_t), -+ 0, 0, -+ fake_ctor_list[mount_id]); -+ -+ if(allocator->object_cache) -+ T(YAFFS_TRACE_ALLOCATE, -+ (TSTR("object cache \"%s\" %p\n"), -+ allocator->object_name,allocator->object_cache)); -+ -+ else { -+ T(YAFFS_TRACE_ALWAYS, -+ (TSTR("yaffs cache creation failed\n"))); -+ YBUG(); -+ } -+ } -+} -+ -+ -+yaffs_tnode_t *yaffs_alloc_raw_tnode(yaffs_dev_t *dev) -+{ -+ yaffs_Allocator *allocator = dev->allocator; -+ if(!allocator || !allocator->tnode_cache){ -+ YBUG(); -+ return NULL; -+ } -+ return kmem_cache_alloc(allocator->tnode_cache, GFP_NOFS); -+} -+ -+void yaffs_free_raw_tnode(yaffs_dev_t *dev, yaffs_tnode_t *tn) -+{ -+ yaffs_Allocator *allocator = dev->allocator; -+ kmem_cache_free(allocator->tnode_cache,tn); -+} -+ -+yaffs_obj_t *yaffs_alloc_raw_obj(yaffs_dev_t *dev) -+{ -+ yaffs_Allocator *allocator = dev->allocator; -+ if(!allocator){ -+ YBUG(); -+ return NULL; -+ } -+ if(!allocator->object_cache){ -+ YBUG(); -+ return NULL; -+ } -+ return kmem_cache_alloc(allocator->object_cache, GFP_NOFS); -+} -+ -+void yaffs_free_raw_obj(yaffs_dev_t *dev, yaffs_obj_t *obj) -+{ -+ yaffs_Allocator *allocator = dev->allocator; -+ kmem_cache_free(allocator->object_cache,obj); -+} ---- /dev/null -+++ b/fs/yaffs2/yaffs_linux.h -@@ -0,0 +1,43 @@ -+/* -+ * YAFFS: Yet another Flash File System . A NAND-flash specific file system. -+ * -+ * Copyright (C) 2002-2010 Aleph One Ltd. -+ * for Toby Churchill Ltd and Brightstar Engineering -+ * -+ * Created by Charles Manning <charles@aleph1.co.uk> -+ * -+ * This program is free software; you can redistribute it and/or modify -+ * it under the terms of the GNU Lesser General Public License version 2.1 as -+ * published by the Free Software Foundation. -+ * -+ * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL. -+ */ -+ -+#ifndef __YAFFS_LINUX_H__ -+#define __YAFFS_LINUX_H__ -+ -+#include "devextras.h" -+#include "yportenv.h" -+ -+struct yaffs_LinuxContext { -+ struct ylist_head contextList; /* List of these we have mounted */ -+ struct yaffs_dev_s *dev; -+ struct super_block * superBlock; -+ struct task_struct *bgThread; /* Background thread for this device */ -+ int bgRunning; -+ struct semaphore grossLock; /* Gross locking semaphore */ -+ __u8 *spareBuffer; /* For mtdif2 use. Don't know the size of the buffer -+ * at compile time so we have to allocate it. -+ */ -+ struct ylist_head searchContexts; -+ void (*putSuperFunc)(struct super_block *sb); -+ -+ struct task_struct *readdirProcess; -+ unsigned mount_id; -+}; -+ -+#define yaffs_dev_to_lc(dev) ((struct yaffs_LinuxContext *)((dev)->os_context)) -+#define yaffs_dev_to_mtd(dev) ((struct mtd_info *)((dev)->driver_context)) -+ -+#endif -+ ---- /dev/null -+++ b/fs/yaffs2/yaffs_list.h -@@ -0,0 +1,127 @@ -+/* -+ * YAFFS: Yet another Flash File System . A NAND-flash specific file system. -+ * -+ * Copyright (C) 2002-2010 Aleph One Ltd. -+ * for Toby Churchill Ltd and Brightstar Engineering -+ * -+ * Created by Charles Manning <charles@aleph1.co.uk> -+ * -+ * This program is free software; you can redistribute it and/or modify -+ * it under the terms of the GNU Lesser General Public License version 2.1 as -+ * published by the Free Software Foundation. -+ * -+ * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL. -+ */ -+ -+/* -+ * This file is just holds extra declarations of macros that would normally -+ * be providesd in the Linux kernel. These macros have been written from -+ * scratch but are functionally equivalent to the Linux ones. -+ * -+ */ -+ -+#ifndef __YAFFS_LIST_H__ -+#define __YAFFS_LIST_H__ -+ -+ -+#include "yportenv.h" -+ -+/* -+ * This is a simple doubly linked list implementation that matches the -+ * way the Linux kernel doubly linked list implementation works. -+ */ -+ -+struct ylist_head { -+ struct ylist_head *next; /* next in chain */ -+ struct ylist_head *prev; /* previous in chain */ -+}; -+ -+ -+/* Initialise a static list */ -+#define YLIST_HEAD(name) \ -+struct ylist_head name = { &(name), &(name)} -+ -+ -+ -+/* Initialise a list head to an empty list */ -+#define YINIT_LIST_HEAD(p) \ -+do { \ -+ (p)->next = (p);\ -+ (p)->prev = (p); \ -+} while (0) -+ -+ -+/* Add an element to a list */ -+static Y_INLINE void ylist_add(struct ylist_head *newEntry, -+ struct ylist_head *list) -+{ -+ struct ylist_head *listNext = list->next; -+ -+ list->next = newEntry; -+ newEntry->prev = list; -+ newEntry->next = listNext; -+ listNext->prev = newEntry; -+ -+} -+ -+static Y_INLINE void ylist_add_tail(struct ylist_head *newEntry, -+ struct ylist_head *list) -+{ -+ struct ylist_head *listPrev = list->prev; -+ -+ list->prev = newEntry; -+ newEntry->next = list; -+ newEntry->prev = listPrev; -+ listPrev->next = newEntry; -+ -+} -+ -+ -+/* Take an element out of its current list, with or without -+ * reinitialising the links.of the entry*/ -+static Y_INLINE void ylist_del(struct ylist_head *entry) -+{ -+ struct ylist_head *listNext = entry->next; -+ struct ylist_head *listPrev = entry->prev; -+ -+ listNext->prev = listPrev; -+ listPrev->next = listNext; -+ -+} -+ -+static Y_INLINE void ylist_del_init(struct ylist_head *entry) -+{ -+ ylist_del(entry); -+ entry->next = entry->prev = entry; -+} -+ -+ -+/* Test if the list is empty */ -+static Y_INLINE int ylist_empty(struct ylist_head *entry) -+{ -+ return (entry->next == entry); -+} -+ -+ -+/* ylist_entry takes a pointer to a list entry and offsets it to that -+ * we can find a pointer to the object it is embedded in. -+ */ -+ -+ -+#define ylist_entry(entry, type, member) \ -+ ((type *)((char *)(entry)-(unsigned long)(&((type *)NULL)->member))) -+ -+ -+/* ylist_for_each and list_for_each_safe iterate over lists. -+ * ylist_for_each_safe uses temporary storage to make the list delete safe -+ */ -+ -+#define ylist_for_each(itervar, list) \ -+ for (itervar = (list)->next; itervar != (list); itervar = itervar->next) -+ -+#define ylist_for_each_safe(itervar, saveVar, list) \ -+ for (itervar = (list)->next, saveVar = (list)->next->next; \ -+ itervar != (list); itervar = saveVar, saveVar = saveVar->next) -+ -+ -+#endif ---- a/fs/yaffs2/yaffs_mtdif1.c -+++ b/fs/yaffs2/yaffs_mtdif1.c -@@ -2,7 +2,7 @@ - * YAFFS: Yet another FFS. A NAND-flash specific file system. - * yaffs_mtdif1.c NAND mtd interface functions for small-page NAND. - * -- * Copyright (C) 2002 Aleph One Ltd. -+ * Copyright (C) 2002-2010 Aleph One Ltd. - * for Toby Churchill Ltd and Brightstar Engineering - * - * This program is free software; you can redistribute it and/or modify -@@ -18,15 +18,17 @@ - * - * These functions are invoked via function pointers in yaffs_nand.c. - * This replaces functionality provided by functions in yaffs_mtdif.c -- * and the yaffs_TagsCompatability functions in yaffs_tagscompat.c that are -+ * and the yaffs_tags_tCompatability functions in yaffs_tagscompat.c that are - * called in yaffs_mtdif.c when the function pointers are NULL. -- * We assume the MTD layer is performing ECC (useNANDECC is true). -+ * We assume the MTD layer is performing ECC (use_nand_ecc is true). - */ - - #include "yportenv.h" -+#include "yaffs_trace.h" - #include "yaffs_guts.h" - #include "yaffs_packedtags1.h" --#include "yaffs_tagscompat.h" /* for yaffs_CalcTagsECC */ -+#include "yaffs_tagscompat.h" /* for yaffs_calc_tags_ecc */ -+#include "yaffs_linux.h" - - #include "linux/kernel.h" - #include "linux/version.h" -@@ -36,8 +38,6 @@ - /* Don't compile this module if we don't have MTD's mtd_oob_ops interface */ - #if (MTD_VERSION_CODE > MTD_VERSION(2, 6, 17)) - --const char *yaffs_mtdif1_c_version = "$Id: yaffs_mtdif1.c,v 1.10 2009-03-09 07:41:10 charles Exp $"; -- - #ifndef CONFIG_YAFFS_9BYTE_TAGS - # define YTAG1_SIZE 8 - #else -@@ -51,12 +51,12 @@ const char *yaffs_mtdif1_c_version = "$I - * adjust 'oobfree' to match your existing Yaffs data. - * - * This nand_ecclayout scatters/gathers to/from the old-yaffs layout with the -- * pageStatus byte (at NAND spare offset 4) scattered/gathered from/to -+ * page_status byte (at NAND spare offset 4) scattered/gathered from/to - * the 9th byte. - * - * Old-style on-NAND format: T0,T1,T2,T3,P,B,T4,T5,E0,E1,E2,T6,T7,E3,E4,E5 -- * We have/need PackedTags1 plus pageStatus: T0,T1,T2,T3,T4,T5,T6,T7,P -- * where Tn are the tag bytes, En are MTD's ECC bytes, P is the pageStatus -+ * We have/need PackedTags1 plus page_status: T0,T1,T2,T3,T4,T5,T6,T7,P -+ * where Tn are the tag bytes, En are MTD's ECC bytes, P is the page_status - * byte and B is the small-page bad-block indicator byte. - */ - static struct nand_ecclayout nand_oob_16 = { -@@ -88,42 +88,40 @@ static struct nand_ecclayout nand_oob_16 - * Any underlying MTD error results in YAFFS_FAIL. - * Returns YAFFS_OK or YAFFS_FAIL. - */ --int nandmtd1_WriteChunkWithTagsToNAND(yaffs_Device *dev, -- int chunkInNAND, const __u8 *data, const yaffs_ExtendedTags *etags) -+int nandmtd1_WriteChunkWithTagsToNAND(yaffs_dev_t *dev, -+ int nand_chunk, const __u8 *data, const yaffs_ext_tags *etags) - { -- struct mtd_info *mtd = dev->genericDevice; -- int chunkBytes = dev->nDataBytesPerChunk; -- loff_t addr = ((loff_t)chunkInNAND) * chunkBytes; -+ struct mtd_info *mtd = yaffs_dev_to_mtd(dev); -+ int chunkBytes = dev->data_bytes_per_chunk; -+ loff_t addr = ((loff_t)nand_chunk) * chunkBytes; - struct mtd_oob_ops ops; - yaffs_PackedTags1 pt1; - int retval; - -- /* we assume that PackedTags1 and yaffs_Tags are compatible */ -+ /* we assume that PackedTags1 and yaffs_tags_t are compatible */ - compile_time_assertion(sizeof(yaffs_PackedTags1) == 12); -- compile_time_assertion(sizeof(yaffs_Tags) == 8); -- -- dev->nPageWrites++; -+ compile_time_assertion(sizeof(yaffs_tags_t) == 8); - - yaffs_PackTags1(&pt1, etags); -- yaffs_CalcTagsECC((yaffs_Tags *)&pt1); -+ yaffs_calc_tags_ecc((yaffs_tags_t *)&pt1); - - /* When deleting a chunk, the upper layer provides only skeletal -- * etags, one with chunkDeleted set. However, we need to update the -+ * etags, one with is_deleted set. However, we need to update the - * tags, not erase them completely. So we use the NAND write property - * that only zeroed-bits stick and set tag bytes to all-ones and - * zero just the (not) deleted bit. - */ - #ifndef CONFIG_YAFFS_9BYTE_TAGS -- if (etags->chunkDeleted) { -+ if (etags->is_deleted) { - memset(&pt1, 0xff, 8); - /* clear delete status bit to indicate deleted */ - pt1.deleted = 0; - } - #else - ((__u8 *)&pt1)[8] = 0xff; -- if (etags->chunkDeleted) { -+ if (etags->is_deleted) { - memset(&pt1, 0xff, 8); -- /* zero pageStatus byte to indicate deleted */ -+ /* zero page_status byte to indicate deleted */ - ((__u8 *)&pt1)[8] = 0; - } - #endif -@@ -137,20 +135,20 @@ int nandmtd1_WriteChunkWithTagsToNAND(ya - - retval = mtd->write_oob(mtd, addr, &ops); - if (retval) { -- yaffs_trace(YAFFS_TRACE_MTD, -- "write_oob failed, chunk %d, mtd error %d\n", -- chunkInNAND, retval); -+ T(YAFFS_TRACE_MTD, -+ (TSTR("write_oob failed, chunk %d, mtd error %d"TENDSTR), -+ nand_chunk, retval)); - } - return retval ? YAFFS_FAIL : YAFFS_OK; - } - --/* Return with empty ExtendedTags but add eccResult. -+/* Return with empty ExtendedTags but add ecc_result. - */ --static int rettags(yaffs_ExtendedTags *etags, int eccResult, int retval) -+static int rettags(yaffs_ext_tags *etags, int ecc_result, int retval) - { - if (etags) { - memset(etags, 0, sizeof(*etags)); -- etags->eccResult = eccResult; -+ etags->ecc_result = ecc_result; - } - return retval; - } -@@ -158,30 +156,28 @@ static int rettags(yaffs_ExtendedTags *e - /* Read a chunk (page) from NAND. - * - * Caller expects ExtendedTags data to be usable even on error; that is, -- * all members except eccResult and blockBad are zeroed. -+ * all members except ecc_result and block_bad are zeroed. - * - * - Check ECC results for data (if applicable) - * - Check for blank/erased block (return empty ExtendedTags if blank) - * - Check the PackedTags1 mini-ECC (correct if necessary/possible) - * - Convert PackedTags1 to ExtendedTags -- * - Update eccResult and blockBad members to refect state. -+ * - Update ecc_result and block_bad members to refect state. - * - * Returns YAFFS_OK or YAFFS_FAIL. - */ --int nandmtd1_ReadChunkWithTagsFromNAND(yaffs_Device *dev, -- int chunkInNAND, __u8 *data, yaffs_ExtendedTags *etags) -+int nandmtd1_ReadChunkWithTagsFromNAND(yaffs_dev_t *dev, -+ int nand_chunk, __u8 *data, yaffs_ext_tags *etags) - { -- struct mtd_info *mtd = dev->genericDevice; -- int chunkBytes = dev->nDataBytesPerChunk; -- loff_t addr = ((loff_t)chunkInNAND) * chunkBytes; -+ struct mtd_info *mtd = yaffs_dev_to_mtd(dev); -+ int chunkBytes = dev->data_bytes_per_chunk; -+ loff_t addr = ((loff_t)nand_chunk) * chunkBytes; - int eccres = YAFFS_ECC_RESULT_NO_ERROR; - struct mtd_oob_ops ops; - yaffs_PackedTags1 pt1; - int retval; - int deleted; - -- dev->nPageReads++; -- - memset(&ops, 0, sizeof(ops)); - ops.mode = MTD_OOB_AUTO; - ops.len = (data) ? chunkBytes : 0; -@@ -200,9 +196,9 @@ int nandmtd1_ReadChunkWithTagsFromNAND(y - */ - retval = mtd->read_oob(mtd, addr, &ops); - if (retval) { -- yaffs_trace(YAFFS_TRACE_MTD, -- "read_oob failed, chunk %d, mtd error %d\n", -- chunkInNAND, retval); -+ T(YAFFS_TRACE_MTD, -+ (TSTR("read_oob failed, chunk %d, mtd error %d"TENDSTR), -+ nand_chunk, retval)); - } - - switch (retval) { -@@ -213,23 +209,23 @@ int nandmtd1_ReadChunkWithTagsFromNAND(y - case -EUCLEAN: - /* MTD's ECC fixed the data */ - eccres = YAFFS_ECC_RESULT_FIXED; -- dev->eccFixed++; -+ dev->n_ecc_fixed++; - break; - - case -EBADMSG: - /* MTD's ECC could not fix the data */ -- dev->eccUnfixed++; -+ dev->n_ecc_unfixed++; - /* fall into... */ - default: - rettags(etags, YAFFS_ECC_RESULT_UNFIXED, 0); -- etags->blockBad = (mtd->block_isbad)(mtd, addr); -+ etags->block_bad = (mtd->block_isbad)(mtd, addr); - return YAFFS_FAIL; - } - - /* Check for a blank/erased chunk. - */ -- if (yaffs_CheckFF((__u8 *)&pt1, 8)) { -- /* when blank, upper layers want eccResult to be <= NO_ERROR */ -+ if (yaffs_check_ff((__u8 *)&pt1, 8)) { -+ /* when blank, upper layers want ecc_result to be <= NO_ERROR */ - return rettags(etags, YAFFS_ECC_RESULT_NO_ERROR, YAFFS_OK); - } - -@@ -241,37 +237,37 @@ int nandmtd1_ReadChunkWithTagsFromNAND(y - deleted = !pt1.deleted; - pt1.deleted = 1; - #else -- deleted = (yaffs_CountBits(((__u8 *)&pt1)[8]) < 7); -+ deleted = (yaffs_count_bits(((__u8 *)&pt1)[8]) < 7); - #endif - - /* Check the packed tags mini-ECC and correct if necessary/possible. - */ -- retval = yaffs_CheckECCOnTags((yaffs_Tags *)&pt1); -+ retval = yaffs_check_tags_ecc((yaffs_tags_t *)&pt1); - switch (retval) { - case 0: - /* no tags error, use MTD result */ - break; - case 1: - /* recovered tags-ECC error */ -- dev->tagsEccFixed++; -+ dev->n_tags_ecc_fixed++; - if (eccres == YAFFS_ECC_RESULT_NO_ERROR) - eccres = YAFFS_ECC_RESULT_FIXED; - break; - default: - /* unrecovered tags-ECC error */ -- dev->tagsEccUnfixed++; -+ dev->n_tags_ecc_unfixed++; - return rettags(etags, YAFFS_ECC_RESULT_UNFIXED, YAFFS_FAIL); - } - - /* Unpack the tags to extended form and set ECC result. -- * [set shouldBeFF just to keep yaffs_UnpackTags1 happy] -+ * [set shouldBeFF just to keep yaffs_unpack_tags1 happy] - */ - pt1.shouldBeFF = 0xFFFFFFFF; -- yaffs_UnpackTags1(etags, &pt1); -- etags->eccResult = eccres; -+ yaffs_unpack_tags1(etags, &pt1); -+ etags->ecc_result = eccres; - - /* Set deleted state */ -- etags->chunkDeleted = deleted; -+ etags->is_deleted = deleted; - return YAFFS_OK; - } - -@@ -282,15 +278,15 @@ int nandmtd1_ReadChunkWithTagsFromNAND(y - * - * Returns YAFFS_OK or YAFFS_FAIL. - */ --int nandmtd1_MarkNANDBlockBad(struct yaffs_DeviceStruct *dev, int blockNo) -+int nandmtd1_MarkNANDBlockBad(struct yaffs_dev_s *dev, int block_no) - { -- struct mtd_info *mtd = dev->genericDevice; -- int blocksize = dev->nChunksPerBlock * dev->nDataBytesPerChunk; -+ struct mtd_info *mtd = yaffs_dev_to_mtd(dev); -+ int blocksize = dev->param.chunks_per_block * dev->data_bytes_per_chunk; - int retval; - -- yaffs_trace(YAFFS_TRACE_BAD_BLOCKS, "marking block %d bad\n", blockNo); -+ T(YAFFS_TRACE_BAD_BLOCKS,(TSTR("marking block %d bad"TENDSTR), block_no)); - -- retval = mtd->block_markbad(mtd, (loff_t)blocksize * blockNo); -+ retval = mtd->block_markbad(mtd, (loff_t)blocksize * block_no); - return (retval) ? YAFFS_FAIL : YAFFS_OK; - } - -@@ -305,9 +301,9 @@ static int nandmtd1_TestPrerequists(stru - int oobavail = mtd->ecclayout->oobavail; - - if (oobavail < YTAG1_SIZE) { -- yaffs_trace(YAFFS_TRACE_ERROR, -- "mtd device has only %d bytes for tags, need %d\n", -- oobavail, YTAG1_SIZE); -+ T(YAFFS_TRACE_ERROR, -+ (TSTR("mtd device has only %d bytes for tags, need %d"TENDSTR), -+ oobavail, YTAG1_SIZE)); - return YAFFS_FAIL; - } - return YAFFS_OK; -@@ -322,13 +318,13 @@ static int nandmtd1_TestPrerequists(stru - * - * Always returns YAFFS_OK. - */ --int nandmtd1_QueryNANDBlock(struct yaffs_DeviceStruct *dev, int blockNo, -- yaffs_BlockState *pState, __u32 *pSequenceNumber) -+int nandmtd1_QueryNANDBlock(struct yaffs_dev_s *dev, int block_no, -+ yaffs_block_state_t *pState, __u32 *pSequenceNumber) - { -- struct mtd_info *mtd = dev->genericDevice; -- int chunkNo = blockNo * dev->nChunksPerBlock; -- loff_t addr = (loff_t)chunkNo * dev->nDataBytesPerChunk; -- yaffs_ExtendedTags etags; -+ struct mtd_info *mtd = yaffs_dev_to_mtd(dev); -+ int chunkNo = block_no * dev->param.chunks_per_block; -+ loff_t addr = (loff_t)chunkNo * dev->data_bytes_per_chunk; -+ yaffs_ext_tags etags; - int state = YAFFS_BLOCK_STATE_DEAD; - int seqnum = 0; - int retval; -@@ -340,17 +336,17 @@ int nandmtd1_QueryNANDBlock(struct yaffs - return YAFFS_FAIL; - - retval = nandmtd1_ReadChunkWithTagsFromNAND(dev, chunkNo, NULL, &etags); -- etags.blockBad = (mtd->block_isbad)(mtd, addr); -- if (etags.blockBad) { -- yaffs_trace(YAFFS_TRACE_BAD_BLOCKS, -- "block %d is marked bad\n", blockNo); -+ etags.block_bad = (mtd->block_isbad)(mtd, addr); -+ if (etags.block_bad) { -+ T(YAFFS_TRACE_BAD_BLOCKS, -+ (TSTR("block %d is marked bad"TENDSTR), block_no)); - state = YAFFS_BLOCK_STATE_DEAD; -- } else if (etags.eccResult != YAFFS_ECC_RESULT_NO_ERROR) { -+ } else if (etags.ecc_result != YAFFS_ECC_RESULT_NO_ERROR) { - /* bad tags, need to look more closely */ - state = YAFFS_BLOCK_STATE_NEEDS_SCANNING; -- } else if (etags.chunkUsed) { -+ } else if (etags.chunk_used) { - state = YAFFS_BLOCK_STATE_NEEDS_SCANNING; -- seqnum = etags.sequenceNumber; -+ seqnum = etags.seq_number; - } else { - state = YAFFS_BLOCK_STATE_EMPTY; - } ---- a/fs/yaffs2/yaffs_mtdif1-compat.c -+++ /dev/null -@@ -1,434 +0,0 @@ --From ian@brightstareng.com Fri May 18 15:06:49 2007 --From ian@brightstareng.com Fri May 18 15:08:21 2007 --Received: from 206.173.66.57.ptr.us.xo.net ([206.173.66.57] helo=zebra.brightstareng.com) -- by apollo.linkchoose.co.uk with esmtp (Exim 4.60) -- (envelope-from <ian@brightstareng.com>) -- id 1Hp380-00011e-T6 -- for david.goodenough@linkchoose.co.uk; Fri, 18 May 2007 15:08:21 +0100 --Received: from localhost (localhost.localdomain [127.0.0.1]) -- by zebra.brightstareng.com (Postfix) with ESMTP -- id 4819F28C004; Fri, 18 May 2007 10:07:49 -0400 (EDT) --Received: from zebra.brightstareng.com ([127.0.0.1]) -- by localhost (zebra [127.0.0.1]) (amavisd-new, port 10024) with ESMTP -- id 05328-06; Fri, 18 May 2007 10:07:16 -0400 (EDT) --Received: from pippin (unknown [192.168.1.25]) -- by zebra.brightstareng.com (Postfix) with ESMTP -- id 8BEF528C1BC; Fri, 18 May 2007 10:06:53 -0400 (EDT) --From: Ian McDonnell <ian@brightstareng.com> --To: David Goodenough <david.goodenough@linkchoose.co.uk> --Subject: Re: something tested this time -- yaffs_mtdif1-compat.c --Date: Fri, 18 May 2007 10:06:49 -0400 --User-Agent: KMail/1.9.1 --References: <200705142207.06909.ian@brightstareng.com> <200705171131.53536.ian@brightstareng.com> <200705181334.32166.david.goodenough@linkchoose.co.uk> --In-Reply-To: <200705181334.32166.david.goodenough@linkchoose.co.uk> --Cc: Andrea Conti <alyf@alyf.net>, -- Charles Manning <manningc2@actrix.gen.nz> --MIME-Version: 1.0 --Content-Type: Multipart/Mixed; -- boundary="Boundary-00=_5LbTGmt62YoutxM" --Message-Id: <200705181006.49860.ian@brightstareng.com> --X-Virus-Scanned: by amavisd-new at brightstareng.com --Status: R --X-Status: NT --X-KMail-EncryptionState: --X-KMail-SignatureState: --X-KMail-MDN-Sent: -- ----Boundary-00=_5LbTGmt62YoutxM --Content-Type: text/plain; -- charset="iso-8859-15" --Content-Transfer-Encoding: 7bit --Content-Disposition: inline -- --David, Andrea, -- --On Friday 18 May 2007 08:34, you wrote: --> Yea team. With this fix in place (I put it in the wrong place --> at first) I can now mount and ls the Yaffs partition without --> an error messages! -- --Good news! -- --Attached is a newer yaffs_mtdif1.c with a bandaid to help the --2.6.18 and 2.6.19 versions of MTD not trip on the oob read. --See the LINUX_VERSION_CODE conditional in --nandmtd1_ReadChunkWithTagsFromNAND. -- ---imcd -- ----Boundary-00=_5LbTGmt62YoutxM --Content-Type: text/x-csrc; -- charset="iso-8859-15"; -- name="yaffs_mtdif1.c" --Content-Transfer-Encoding: 7bit --Content-Disposition: attachment; -- filename="yaffs_mtdif1.c" -- --/* -- * YAFFS: Yet another FFS. A NAND-flash specific file system. -- * yaffs_mtdif1.c NAND mtd interface functions for small-page NAND. -- * -- * Copyright (C) 2002 Aleph One Ltd. -- * for Toby Churchill Ltd and Brightstar Engineering -- * -- * This program is free software; you can redistribute it and/or modify -- * it under the terms of the GNU General Public License version 2 as -- * published by the Free Software Foundation. -- */ -- --/* -- * This module provides the interface between yaffs_nand.c and the -- * MTD API. This version is used when the MTD interface supports the -- * 'mtd_oob_ops' style calls to read_oob and write_oob, circa 2.6.17, -- * and we have small-page NAND device. -- * -- * These functions are invoked via function pointers in yaffs_nand.c. -- * This replaces functionality provided by functions in yaffs_mtdif.c -- * and the yaffs_TagsCompatability functions in yaffs_tagscompat.c that are -- * called in yaffs_mtdif.c when the function pointers are NULL. -- * We assume the MTD layer is performing ECC (useNANDECC is true). -- */ -- --#include "yportenv.h" --#include "yaffs_guts.h" --#include "yaffs_packedtags1.h" --#include "yaffs_tagscompat.h" // for yaffs_CalcTagsECC -- --#include "linux/kernel.h" --#include "linux/version.h" --#include "linux/types.h" --#include "linux/mtd/mtd.h" -- --/* Don't compile this module if we don't have MTD's mtd_oob_ops interface */ --#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17)) -- --const char *yaffs_mtdif1_c_version = "$Id$"; -- --#ifndef CONFIG_YAFFS_9BYTE_TAGS --# define YTAG1_SIZE 8 --#else --# define YTAG1_SIZE 9 --#endif -- --#if 0 --/* Use the following nand_ecclayout with MTD when using -- * CONFIG_YAFFS_9BYTE_TAGS and the older on-NAND tags layout. -- * If you have existing Yaffs images and the byte order differs from this, -- * adjust 'oobfree' to match your existing Yaffs data. -- * -- * This nand_ecclayout scatters/gathers to/from the old-yaffs layout with the -- * pageStatus byte (at NAND spare offset 4) scattered/gathered from/to -- * the 9th byte. -- * -- * Old-style on-NAND format: T0,T1,T2,T3,P,B,T4,T5,E0,E1,E2,T6,T7,E3,E4,E5 -- * We have/need PackedTags1 plus pageStatus: T0,T1,T2,T3,T4,T5,T6,T7,P -- * where Tn are the tag bytes, En are MTD's ECC bytes, P is the pageStatus -- * byte and B is the small-page bad-block indicator byte. -- */ --static struct nand_ecclayout nand_oob_16 = { -- .eccbytes = 6, -- .eccpos = { 8, 9, 10, 13, 14, 15 }, -- .oobavail = 9, -- .oobfree = { { 0, 4 }, { 6, 2 }, { 11, 2 }, { 4, 1 } } --}; --#endif -- --/* Write a chunk (page) of data to NAND. -- * -- * Caller always provides ExtendedTags data which are converted to a more -- * compact (packed) form for storage in NAND. A mini-ECC runs over the -- * contents of the tags meta-data; used to valid the tags when read. -- * -- * - Pack ExtendedTags to PackedTags1 form -- * - Compute mini-ECC for PackedTags1 -- * - Write data and packed tags to NAND. -- * -- * Note: Due to the use of the PackedTags1 meta-data which does not include -- * a full sequence number (as found in the larger PackedTags2 form) it is -- * necessary for Yaffs to re-write a chunk/page (just once) to mark it as -- * discarded and dirty. This is not ideal: newer NAND parts are supposed -- * to be written just once. When Yaffs performs this operation, this -- * function is called with a NULL data pointer -- calling MTD write_oob -- * without data is valid usage (2.6.17). -- * -- * Any underlying MTD error results in YAFFS_FAIL. -- * Returns YAFFS_OK or YAFFS_FAIL. -- */ --int nandmtd1_WriteChunkWithTagsToNAND(yaffs_Device *dev, -- int chunkInNAND, const __u8 * data, const yaffs_ExtendedTags * etags) --{ -- struct mtd_info * mtd = dev->genericDevice; -- int chunkBytes = dev->nDataBytesPerChunk; -- loff_t addr = ((loff_t)chunkInNAND) * chunkBytes; -- struct mtd_oob_ops ops; -- yaffs_PackedTags1 pt1; -- int retval; -- -- /* we assume that PackedTags1 and yaffs_Tags are compatible */ -- compile_time_assertion(sizeof(yaffs_PackedTags1) == 12); -- compile_time_assertion(sizeof(yaffs_Tags) == 8); -- -- yaffs_PackTags1(&pt1, etags); -- yaffs_CalcTagsECC((yaffs_Tags *)&pt1); -- -- /* When deleting a chunk, the upper layer provides only skeletal -- * etags, one with chunkDeleted set. However, we need to update the -- * tags, not erase them completely. So we use the NAND write property -- * that only zeroed-bits stick and set tag bytes to all-ones and -- * zero just the (not) deleted bit. -- */ --#ifndef CONFIG_YAFFS_9BYTE_TAGS -- if (etags->chunkDeleted) { -- memset(&pt1, 0xff, 8); -- /* clear delete status bit to indicate deleted */ -- pt1.deleted = 0; -- } --#else -- ((__u8 *)&pt1)[8] = 0xff; -- if (etags->chunkDeleted) { -- memset(&pt1, 0xff, 8); -- /* zero pageStatus byte to indicate deleted */ -- ((__u8 *)&pt1)[8] = 0; -- } --#endif -- -- memset(&ops, 0, sizeof(ops)); -- ops.mode = MTD_OOB_AUTO; -- ops.len = (data) ? chunkBytes : 0; -- ops.ooblen = YTAG1_SIZE; -- ops.datbuf = (__u8 *)data; -- ops.oobbuf = (__u8 *)&pt1; -- -- retval = mtd->write_oob(mtd, addr, &ops); -- if (retval) { -- yaffs_trace(YAFFS_TRACE_MTD, -- "write_oob failed, chunk %d, mtd error %d\n", -- chunkInNAND, retval); -- } -- return retval ? YAFFS_FAIL : YAFFS_OK; --} -- --/* Return with empty ExtendedTags but add eccResult. -- */ --static int rettags(yaffs_ExtendedTags * etags, int eccResult, int retval) --{ -- if (etags) { -- memset(etags, 0, sizeof(*etags)); -- etags->eccResult = eccResult; -- } -- return retval; --} -- --/* Read a chunk (page) from NAND. -- * -- * Caller expects ExtendedTags data to be usable even on error; that is, -- * all members except eccResult and blockBad are zeroed. -- * -- * - Check ECC results for data (if applicable) -- * - Check for blank/erased block (return empty ExtendedTags if blank) -- * - Check the PackedTags1 mini-ECC (correct if necessary/possible) -- * - Convert PackedTags1 to ExtendedTags -- * - Update eccResult and blockBad members to refect state. -- * -- * Returns YAFFS_OK or YAFFS_FAIL. -- */ --int nandmtd1_ReadChunkWithTagsFromNAND(yaffs_Device *dev, -- int chunkInNAND, __u8 * data, yaffs_ExtendedTags * etags) --{ -- struct mtd_info * mtd = dev->genericDevice; -- int chunkBytes = dev->nDataBytesPerChunk; -- loff_t addr = ((loff_t)chunkInNAND) * chunkBytes; -- int eccres = YAFFS_ECC_RESULT_NO_ERROR; -- struct mtd_oob_ops ops; -- yaffs_PackedTags1 pt1; -- int retval; -- int deleted; -- -- memset(&ops, 0, sizeof(ops)); -- ops.mode = MTD_OOB_AUTO; -- ops.len = (data) ? chunkBytes : 0; -- ops.ooblen = YTAG1_SIZE; -- ops.datbuf = data; -- ops.oobbuf = (__u8 *)&pt1; -- --#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,20)) -- /* In MTD 2.6.18 to 2.6.19 nand_base.c:nand_do_read_oob() has a bug; -- * help it out with ops.len = ops.ooblen when ops.datbuf == NULL. -- */ -- ops.len = (ops.datbuf) ? ops.len : ops.ooblen; --#endif -- /* Read page and oob using MTD. -- * Check status and determine ECC result. -- */ -- retval = mtd->read_oob(mtd, addr, &ops); -- if (retval) { -- yaffs_trace(YAFFS_TRACE_MTD, -- "read_oob failed, chunk %d, mtd error %d\n", -- chunkInNAND, retval); -- } -- -- switch (retval) { -- case 0: -- /* no error */ -- break; -- -- case -EUCLEAN: -- /* MTD's ECC fixed the data */ -- eccres = YAFFS_ECC_RESULT_FIXED; -- dev->eccFixed++; -- break; -- -- case -EBADMSG: -- /* MTD's ECC could not fix the data */ -- dev->eccUnfixed++; -- /* fall into... */ -- default: -- rettags(etags, YAFFS_ECC_RESULT_UNFIXED, 0); -- etags->blockBad = (mtd->block_isbad)(mtd, addr); -- return YAFFS_FAIL; -- } -- -- /* Check for a blank/erased chunk. -- */ -- if (yaffs_CheckFF((__u8 *)&pt1, 8)) { -- /* when blank, upper layers want eccResult to be <= NO_ERROR */ -- return rettags(etags, YAFFS_ECC_RESULT_NO_ERROR, YAFFS_OK); -- } -- --#ifndef CONFIG_YAFFS_9BYTE_TAGS -- /* Read deleted status (bit) then return it to it's non-deleted -- * state before performing tags mini-ECC check. pt1.deleted is -- * inverted. -- */ -- deleted = !pt1.deleted; -- pt1.deleted = 1; --#else -- (void) deleted; /* not used */ --#endif -- -- /* Check the packed tags mini-ECC and correct if necessary/possible. -- */ -- retval = yaffs_CheckECCOnTags((yaffs_Tags *)&pt1); -- switch (retval) { -- case 0: -- /* no tags error, use MTD result */ -- break; -- case 1: -- /* recovered tags-ECC error */ -- dev->tagsEccFixed++; -- eccres = YAFFS_ECC_RESULT_FIXED; -- break; -- default: -- /* unrecovered tags-ECC error */ -- dev->tagsEccUnfixed++; -- return rettags(etags, YAFFS_ECC_RESULT_UNFIXED, YAFFS_FAIL); -- } -- -- /* Unpack the tags to extended form and set ECC result. -- * [set shouldBeFF just to keep yaffs_UnpackTags1 happy] -- */ -- pt1.shouldBeFF = 0xFFFFFFFF; -- yaffs_UnpackTags1(etags, &pt1); -- etags->eccResult = eccres; -- -- /* Set deleted state. -- */ --#ifndef CONFIG_YAFFS_9BYTE_TAGS -- etags->chunkDeleted = deleted; --#else -- etags->chunkDeleted = (yaffs_CountBits(((__u8 *)&pt1)[8]) < 7); --#endif -- return YAFFS_OK; --} -- --/* Mark a block bad. -- * -- * This is a persistant state. -- * Use of this function should be rare. -- * -- * Returns YAFFS_OK or YAFFS_FAIL. -- */ --int nandmtd1_MarkNANDBlockBad(struct yaffs_DeviceStruct *dev, int blockNo) --{ -- struct mtd_info * mtd = dev->genericDevice; -- int blocksize = dev->nChunksPerBlock * dev->nDataBytesPerChunk; -- int retval; -- -- yaffs_trace(YAFFS_TRACE_BAD_BLOCKS, "marking block %d bad", blockNo); -- -- retval = mtd->block_markbad(mtd, (loff_t)blocksize * blockNo); -- return (retval) ? YAFFS_FAIL : YAFFS_OK; --} -- --/* Check any MTD prerequists. -- * -- * Returns YAFFS_OK or YAFFS_FAIL. -- */ --static int nandmtd1_TestPrerequists(struct mtd_info * mtd) --{ -- /* 2.6.18 has mtd->ecclayout->oobavail */ -- /* 2.6.21 has mtd->ecclayout->oobavail and mtd->oobavail */ -- int oobavail = mtd->ecclayout->oobavail; -- -- if (oobavail < YTAG1_SIZE) { -- yaffs_trace(YAFFS_TRACE_ERROR, -- "mtd device has only %d bytes for tags, need %d", -- oobavail, YTAG1_SIZE); -- return YAFFS_FAIL; -- } -- return YAFFS_OK; --} -- --/* Query for the current state of a specific block. -- * -- * Examine the tags of the first chunk of the block and return the state: -- * - YAFFS_BLOCK_STATE_DEAD, the block is marked bad -- * - YAFFS_BLOCK_STATE_NEEDS_SCANNING, the block is in use -- * - YAFFS_BLOCK_STATE_EMPTY, the block is clean -- * -- * Always returns YAFFS_OK. -- */ --int nandmtd1_QueryNANDBlock(struct yaffs_DeviceStruct *dev, int blockNo, -- yaffs_BlockState * pState, int *pSequenceNumber) --{ -- struct mtd_info * mtd = dev->genericDevice; -- int chunkNo = blockNo * dev->nChunksPerBlock; -- yaffs_ExtendedTags etags; -- int state = YAFFS_BLOCK_STATE_DEAD; -- int seqnum = 0; -- int retval; -- -- /* We don't yet have a good place to test for MTD config prerequists. -- * Do it here as we are called during the initial scan. -- */ -- if (nandmtd1_TestPrerequists(mtd) != YAFFS_OK) { -- return YAFFS_FAIL; -- } -- -- retval = nandmtd1_ReadChunkWithTagsFromNAND(dev, chunkNo, NULL, &etags); -- if (etags.blockBad) { -- yaffs_trace(YAFFS_TRACE_BAD_BLOCKS, -- "block %d is marked bad", blockNo); -- state = YAFFS_BLOCK_STATE_DEAD; -- } -- else if (etags.chunkUsed) { -- state = YAFFS_BLOCK_STATE_NEEDS_SCANNING; -- seqnum = etags.sequenceNumber; -- } -- else { -- state = YAFFS_BLOCK_STATE_EMPTY; -- } -- -- *pState = state; -- *pSequenceNumber = seqnum; -- -- /* query always succeeds */ -- return YAFFS_OK; --} -- --#endif /*KERNEL_VERSION*/ -- ----Boundary-00=_5LbTGmt62YoutxM-- -- -- -- ---- a/fs/yaffs2/yaffs_mtdif1.h -+++ b/fs/yaffs2/yaffs_mtdif1.h -@@ -1,7 +1,7 @@ - /* - * YAFFS: Yet another Flash File System. A NAND-flash specific file system. - * -- * Copyright (C) 2002-2007 Aleph One Ltd. -+ * Copyright (C) 2002-2010 Aleph One Ltd. - * for Toby Churchill Ltd and Brightstar Engineering - * - * This program is free software; you can redistribute it and/or modify -@@ -14,15 +14,15 @@ - #ifndef __YAFFS_MTDIF1_H__ - #define __YAFFS_MTDIF1_H__ - --int nandmtd1_WriteChunkWithTagsToNAND(yaffs_Device *dev, int chunkInNAND, -- const __u8 *data, const yaffs_ExtendedTags *tags); -+int nandmtd1_WriteChunkWithTagsToNAND(yaffs_dev_t *dev, int nand_chunk, -+ const __u8 *data, const yaffs_ext_tags *tags); - --int nandmtd1_ReadChunkWithTagsFromNAND(yaffs_Device *dev, int chunkInNAND, -- __u8 *data, yaffs_ExtendedTags *tags); -+int nandmtd1_ReadChunkWithTagsFromNAND(yaffs_dev_t *dev, int nand_chunk, -+ __u8 *data, yaffs_ext_tags *tags); - --int nandmtd1_MarkNANDBlockBad(struct yaffs_DeviceStruct *dev, int blockNo); -+int nandmtd1_MarkNANDBlockBad(struct yaffs_dev_s *dev, int block_no); - --int nandmtd1_QueryNANDBlock(struct yaffs_DeviceStruct *dev, int blockNo, -- yaffs_BlockState *state, __u32 *sequenceNumber); -+int nandmtd1_QueryNANDBlock(struct yaffs_dev_s *dev, int block_no, -+ yaffs_block_state_t *state, __u32 *seq_number); - - #endif ---- a/fs/yaffs2/yaffs_mtdif2.c -+++ b/fs/yaffs2/yaffs_mtdif2.c -@@ -1,7 +1,7 @@ - /* - * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. - * -- * Copyright (C) 2002-2007 Aleph One Ltd. -+ * Copyright (C) 2002-2010 Aleph One Ltd. - * for Toby Churchill Ltd and Brightstar Engineering - * - * Created by Charles Manning <charles@aleph1.co.uk> -@@ -13,11 +13,8 @@ - - /* mtd interface for YAFFS2 */ - --const char *yaffs_mtdif2_c_version = -- "$Id: yaffs_mtdif2.c,v 1.23 2009-03-06 17:20:53 wookey Exp $"; -- - #include "yportenv.h" -- -+#include "yaffs_trace.h" - - #include "yaffs_mtdif2.h" - -@@ -27,15 +24,17 @@ const char *yaffs_mtdif2_c_version = - - #include "yaffs_packedtags2.h" - -+#include "yaffs_linux.h" -+ - /* NB For use with inband tags.... - * We assume that the data buffer is of size totalBytersPerChunk so that we can also - * use it to load the tags. - */ --int nandmtd2_WriteChunkWithTagsToNAND(yaffs_Device *dev, int chunkInNAND, -+int nandmtd2_WriteChunkWithTagsToNAND(yaffs_dev_t *dev, int nand_chunk, - const __u8 *data, -- const yaffs_ExtendedTags *tags) -+ const yaffs_ext_tags *tags) - { -- struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice); -+ struct mtd_info *mtd = yaffs_dev_to_mtd(dev); - #if (MTD_VERSION_CODE > MTD_VERSION(2, 6, 17)) - struct mtd_oob_ops ops; - #else -@@ -47,13 +46,16 @@ int nandmtd2_WriteChunkWithTagsToNAND(ya - - yaffs_PackedTags2 pt; - -+ int packed_tags_size = dev->param.no_tags_ecc ? sizeof(pt.t) : sizeof(pt); -+ void * packed_tags_ptr = dev->param.no_tags_ecc ? (void *) &pt.t : (void *)&pt; -+ - T(YAFFS_TRACE_MTD, - (TSTR - ("nandmtd2_WriteChunkWithTagsToNAND chunk %d data %p tags %p" -- TENDSTR), chunkInNAND, data, tags)); -+ TENDSTR), nand_chunk, data, tags)); - - -- addr = ((loff_t) chunkInNAND) * dev->totalBytesPerChunk; -+ addr = ((loff_t) nand_chunk) * dev->param.total_bytes_per_chunk; - - /* For yaffs2 writing there must be both data and tags. - * If we're using inband tags, then the tags are stuffed into -@@ -61,30 +63,30 @@ int nandmtd2_WriteChunkWithTagsToNAND(ya - */ - if (!data || !tags) - BUG(); -- else if (dev->inbandTags) { -+ else if (dev->param.inband_tags) { - yaffs_PackedTags2TagsPart *pt2tp; -- pt2tp = (yaffs_PackedTags2TagsPart *)(data + dev->nDataBytesPerChunk); -+ pt2tp = (yaffs_PackedTags2TagsPart *)(data + dev->data_bytes_per_chunk); - yaffs_PackTags2TagsPart(pt2tp, tags); - } else -- yaffs_PackTags2(&pt, tags); -+ yaffs_PackTags2(&pt, tags, !dev->param.no_tags_ecc); - - #if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) - ops.mode = MTD_OOB_AUTO; -- ops.ooblen = (dev->inbandTags) ? 0 : sizeof(pt); -- ops.len = dev->totalBytesPerChunk; -+ ops.ooblen = (dev->param.inband_tags) ? 0 : packed_tags_size; -+ ops.len = dev->param.total_bytes_per_chunk; - ops.ooboffs = 0; - ops.datbuf = (__u8 *)data; -- ops.oobbuf = (dev->inbandTags) ? NULL : (void *)&pt; -+ ops.oobbuf = (dev->param.inband_tags) ? NULL : packed_tags_ptr; - retval = mtd->write_oob(mtd, addr, &ops); - - #else -- if (!dev->inbandTags) { -+ if (!dev->param.inband_tags) { - retval = -- mtd->write_ecc(mtd, addr, dev->nDataBytesPerChunk, -- &dummy, data, (__u8 *) &pt, NULL); -+ mtd->write_ecc(mtd, addr, dev->data_bytes_per_chunk, -+ &dummy, data, (__u8 *) packed_tags_ptr, NULL); - } else { - retval = -- mtd->write(mtd, addr, dev->totalBytesPerChunk, &dummy, -+ mtd->write(mtd, addr, dev->param.total_bytes_per_chunk, &dummy, - data); - } - #endif -@@ -95,10 +97,10 @@ int nandmtd2_WriteChunkWithTagsToNAND(ya - return YAFFS_FAIL; - } - --int nandmtd2_ReadChunkWithTagsFromNAND(yaffs_Device *dev, int chunkInNAND, -- __u8 *data, yaffs_ExtendedTags *tags) -+int nandmtd2_ReadChunkWithTagsFromNAND(yaffs_dev_t *dev, int nand_chunk, -+ __u8 *data, yaffs_ext_tags *tags) - { -- struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice); -+ struct mtd_info *mtd = yaffs_dev_to_mtd(dev); - #if (MTD_VERSION_CODE > MTD_VERSION(2, 6, 17)) - struct mtd_oob_ops ops; - #endif -@@ -106,20 +108,23 @@ int nandmtd2_ReadChunkWithTagsFromNAND(y - int retval = 0; - int localData = 0; - -- loff_t addr = ((loff_t) chunkInNAND) * dev->totalBytesPerChunk; -+ loff_t addr = ((loff_t) nand_chunk) * dev->param.total_bytes_per_chunk; - - yaffs_PackedTags2 pt; - -+ int packed_tags_size = dev->param.no_tags_ecc ? sizeof(pt.t) : sizeof(pt); -+ void * packed_tags_ptr = dev->param.no_tags_ecc ? (void *) &pt.t: (void *)&pt; -+ - T(YAFFS_TRACE_MTD, - (TSTR - ("nandmtd2_ReadChunkWithTagsFromNAND chunk %d data %p tags %p" -- TENDSTR), chunkInNAND, data, tags)); -+ TENDSTR), nand_chunk, data, tags)); - -- if (dev->inbandTags) { -+ if (dev->param.inband_tags) { - - if (!data) { - localData = 1; -- data = yaffs_GetTempBuffer(dev, __LINE__); -+ data = yaffs_get_temp_buffer(dev, __LINE__); - } - - -@@ -127,30 +132,30 @@ int nandmtd2_ReadChunkWithTagsFromNAND(y - - - #if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) -- if (dev->inbandTags || (data && !tags)) -- retval = mtd->read(mtd, addr, dev->totalBytesPerChunk, -+ if (dev->param.inband_tags || (data && !tags)) -+ retval = mtd->read(mtd, addr, dev->param.total_bytes_per_chunk, - &dummy, data); - else if (tags) { - ops.mode = MTD_OOB_AUTO; -- ops.ooblen = sizeof(pt); -- ops.len = data ? dev->nDataBytesPerChunk : sizeof(pt); -+ ops.ooblen = packed_tags_size; -+ ops.len = data ? dev->data_bytes_per_chunk : packed_tags_size; - ops.ooboffs = 0; - ops.datbuf = data; -- ops.oobbuf = dev->spareBuffer; -+ ops.oobbuf = yaffs_dev_to_lc(dev)->spareBuffer; - retval = mtd->read_oob(mtd, addr, &ops); - } - #else -- if (!dev->inbandTags && data && tags) { -+ if (!dev->param.inband_tags && data && tags) { - -- retval = mtd->read_ecc(mtd, addr, dev->nDataBytesPerChunk, -+ retval = mtd->read_ecc(mtd, addr, dev->data_bytes_per_chunk, - &dummy, data, dev->spareBuffer, - NULL); - } else { - if (data) - retval = -- mtd->read(mtd, addr, dev->nDataBytesPerChunk, &dummy, -+ mtd->read(mtd, addr, dev->data_bytes_per_chunk, &dummy, - data); -- if (!dev->inbandTags && tags) -+ if (!dev->param.inband_tags && tags) - retval = - mtd->read_oob(mtd, addr, mtd->oobsize, &dummy, - dev->spareBuffer); -@@ -158,41 +163,47 @@ int nandmtd2_ReadChunkWithTagsFromNAND(y - #endif - - -- if (dev->inbandTags) { -+ if (dev->param.inband_tags) { - if (tags) { - yaffs_PackedTags2TagsPart *pt2tp; -- pt2tp = (yaffs_PackedTags2TagsPart *)&data[dev->nDataBytesPerChunk]; -- yaffs_UnpackTags2TagsPart(tags, pt2tp); -+ pt2tp = (yaffs_PackedTags2TagsPart *)&data[dev->data_bytes_per_chunk]; -+ yaffs_unpack_tags2tags_part(tags, pt2tp); - } - } else { - if (tags) { -- memcpy(&pt, dev->spareBuffer, sizeof(pt)); -- yaffs_UnpackTags2(tags, &pt); -+ memcpy(packed_tags_ptr, yaffs_dev_to_lc(dev)->spareBuffer, packed_tags_size); -+ yaffs_unpack_tags2(tags, &pt, !dev->param.no_tags_ecc); - } - } - - if (localData) -- yaffs_ReleaseTempBuffer(dev, data, __LINE__); -+ yaffs_release_temp_buffer(dev, data, __LINE__); - -- if (tags && retval == -EBADMSG && tags->eccResult == YAFFS_ECC_RESULT_NO_ERROR) -- tags->eccResult = YAFFS_ECC_RESULT_UNFIXED; -+ if (tags && retval == -EBADMSG && tags->ecc_result == YAFFS_ECC_RESULT_NO_ERROR) { -+ tags->ecc_result = YAFFS_ECC_RESULT_UNFIXED; -+ dev->n_ecc_unfixed++; -+ } -+ if(tags && retval == -EUCLEAN && tags->ecc_result == YAFFS_ECC_RESULT_NO_ERROR) { -+ tags->ecc_result = YAFFS_ECC_RESULT_FIXED; -+ dev->n_ecc_fixed++; -+ } - if (retval == 0) - return YAFFS_OK; - else - return YAFFS_FAIL; - } - --int nandmtd2_MarkNANDBlockBad(struct yaffs_DeviceStruct *dev, int blockNo) -+int nandmtd2_MarkNANDBlockBad(struct yaffs_dev_s *dev, int block_no) - { -- struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice); -+ struct mtd_info *mtd = yaffs_dev_to_mtd(dev); - int retval; - T(YAFFS_TRACE_MTD, -- (TSTR("nandmtd2_MarkNANDBlockBad %d" TENDSTR), blockNo)); -+ (TSTR("nandmtd2_MarkNANDBlockBad %d" TENDSTR), block_no)); - - retval = - mtd->block_markbad(mtd, -- blockNo * dev->nChunksPerBlock * -- dev->totalBytesPerChunk); -+ block_no * dev->param.chunks_per_block * -+ dev->param.total_bytes_per_chunk); - - if (retval == 0) - return YAFFS_OK; -@@ -201,41 +212,41 @@ int nandmtd2_MarkNANDBlockBad(struct yaf - - } - --int nandmtd2_QueryNANDBlock(struct yaffs_DeviceStruct *dev, int blockNo, -- yaffs_BlockState *state, __u32 *sequenceNumber) -+int nandmtd2_QueryNANDBlock(struct yaffs_dev_s *dev, int block_no, -+ yaffs_block_state_t *state, __u32 *seq_number) - { -- struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice); -+ struct mtd_info *mtd = yaffs_dev_to_mtd(dev); - int retval; - - T(YAFFS_TRACE_MTD, -- (TSTR("nandmtd2_QueryNANDBlock %d" TENDSTR), blockNo)); -+ (TSTR("nandmtd2_QueryNANDBlock %d" TENDSTR), block_no)); - retval = - mtd->block_isbad(mtd, -- blockNo * dev->nChunksPerBlock * -- dev->totalBytesPerChunk); -+ block_no * dev->param.chunks_per_block * -+ dev->param.total_bytes_per_chunk); - - if (retval) { - T(YAFFS_TRACE_MTD, (TSTR("block is bad" TENDSTR))); - - *state = YAFFS_BLOCK_STATE_DEAD; -- *sequenceNumber = 0; -+ *seq_number = 0; - } else { -- yaffs_ExtendedTags t; -+ yaffs_ext_tags t; - nandmtd2_ReadChunkWithTagsFromNAND(dev, -- blockNo * -- dev->nChunksPerBlock, NULL, -+ block_no * -+ dev->param.chunks_per_block, NULL, - &t); - -- if (t.chunkUsed) { -- *sequenceNumber = t.sequenceNumber; -+ if (t.chunk_used) { -+ *seq_number = t.seq_number; - *state = YAFFS_BLOCK_STATE_NEEDS_SCANNING; - } else { -- *sequenceNumber = 0; -+ *seq_number = 0; - *state = YAFFS_BLOCK_STATE_EMPTY; - } - } - T(YAFFS_TRACE_MTD, -- (TSTR("block is bad seq %d state %d" TENDSTR), *sequenceNumber, -+ (TSTR("block is bad seq %d state %d" TENDSTR), *seq_number, - *state)); - - if (retval == 0) ---- a/fs/yaffs2/yaffs_mtdif2.h -+++ b/fs/yaffs2/yaffs_mtdif2.h -@@ -1,7 +1,7 @@ - /* - * YAFFS: Yet another Flash File System . A NAND-flash specific file system. - * -- * Copyright (C) 2002-2007 Aleph One Ltd. -+ * Copyright (C) 2002-2010 Aleph One Ltd. - * for Toby Churchill Ltd and Brightstar Engineering - * - * Created by Charles Manning <charles@aleph1.co.uk> -@@ -17,13 +17,13 @@ - #define __YAFFS_MTDIF2_H__ - - #include "yaffs_guts.h" --int nandmtd2_WriteChunkWithTagsToNAND(yaffs_Device *dev, int chunkInNAND, -+int nandmtd2_WriteChunkWithTagsToNAND(yaffs_dev_t *dev, int nand_chunk, - const __u8 *data, -- const yaffs_ExtendedTags *tags); --int nandmtd2_ReadChunkWithTagsFromNAND(yaffs_Device *dev, int chunkInNAND, -- __u8 *data, yaffs_ExtendedTags *tags); --int nandmtd2_MarkNANDBlockBad(struct yaffs_DeviceStruct *dev, int blockNo); --int nandmtd2_QueryNANDBlock(struct yaffs_DeviceStruct *dev, int blockNo, -- yaffs_BlockState *state, __u32 *sequenceNumber); -+ const yaffs_ext_tags *tags); -+int nandmtd2_ReadChunkWithTagsFromNAND(yaffs_dev_t *dev, int nand_chunk, -+ __u8 *data, yaffs_ext_tags *tags); -+int nandmtd2_MarkNANDBlockBad(struct yaffs_dev_s *dev, int block_no); -+int nandmtd2_QueryNANDBlock(struct yaffs_dev_s *dev, int block_no, -+ yaffs_block_state_t *state, __u32 *seq_number); - - #endif ---- a/fs/yaffs2/yaffs_mtdif.c -+++ b/fs/yaffs2/yaffs_mtdif.c -@@ -1,7 +1,7 @@ - /* - * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. - * -- * Copyright (C) 2002-2007 Aleph One Ltd. -+ * Copyright (C) 2002-2010 Aleph One Ltd. - * for Toby Churchill Ltd and Brightstar Engineering - * - * Created by Charles Manning <charles@aleph1.co.uk> -@@ -11,9 +11,6 @@ - * published by the Free Software Foundation. - */ - --const char *yaffs_mtdif_c_version = -- "$Id: yaffs_mtdif.c,v 1.22 2009-03-06 17:20:51 wookey Exp $"; -- - #include "yportenv.h" - - -@@ -24,208 +21,26 @@ const char *yaffs_mtdif_c_version = - #include "linux/time.h" - #include "linux/mtd/nand.h" - --#if (MTD_VERSION_CODE < MTD_VERSION(2, 6, 18)) --static struct nand_oobinfo yaffs_oobinfo = { -- .useecc = 1, -- .eccbytes = 6, -- .eccpos = {8, 9, 10, 13, 14, 15} --}; -- --static struct nand_oobinfo yaffs_noeccinfo = { -- .useecc = 0, --}; --#endif -- --#if (MTD_VERSION_CODE > MTD_VERSION(2, 6, 17)) --static inline void translate_spare2oob(const yaffs_Spare *spare, __u8 *oob) --{ -- oob[0] = spare->tagByte0; -- oob[1] = spare->tagByte1; -- oob[2] = spare->tagByte2; -- oob[3] = spare->tagByte3; -- oob[4] = spare->tagByte4; -- oob[5] = spare->tagByte5 & 0x3f; -- oob[5] |= spare->blockStatus == 'Y' ? 0 : 0x80; -- oob[5] |= spare->pageStatus == 0 ? 0 : 0x40; -- oob[6] = spare->tagByte6; -- oob[7] = spare->tagByte7; --} -- --static inline void translate_oob2spare(yaffs_Spare *spare, __u8 *oob) --{ -- struct yaffs_NANDSpare *nspare = (struct yaffs_NANDSpare *)spare; -- spare->tagByte0 = oob[0]; -- spare->tagByte1 = oob[1]; -- spare->tagByte2 = oob[2]; -- spare->tagByte3 = oob[3]; -- spare->tagByte4 = oob[4]; -- spare->tagByte5 = oob[5] == 0xff ? 0xff : oob[5] & 0x3f; -- spare->blockStatus = oob[5] & 0x80 ? 0xff : 'Y'; -- spare->pageStatus = oob[5] & 0x40 ? 0xff : 0; -- spare->ecc1[0] = spare->ecc1[1] = spare->ecc1[2] = 0xff; -- spare->tagByte6 = oob[6]; -- spare->tagByte7 = oob[7]; -- spare->ecc2[0] = spare->ecc2[1] = spare->ecc2[2] = 0xff; -- -- nspare->eccres1 = nspare->eccres2 = 0; /* FIXME */ --} --#endif -- --int nandmtd_WriteChunkToNAND(yaffs_Device *dev, int chunkInNAND, -- const __u8 *data, const yaffs_Spare *spare) --{ -- struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice); --#if (MTD_VERSION_CODE > MTD_VERSION(2, 6, 17)) -- struct mtd_oob_ops ops; --#endif -- size_t dummy; -- int retval = 0; -- -- loff_t addr = ((loff_t) chunkInNAND) * dev->nDataBytesPerChunk; --#if (MTD_VERSION_CODE > MTD_VERSION(2, 6, 17)) -- __u8 spareAsBytes[8]; /* OOB */ -- -- if (data && !spare) -- retval = mtd->write(mtd, addr, dev->nDataBytesPerChunk, -- &dummy, data); -- else if (spare) { -- if (dev->useNANDECC) { -- translate_spare2oob(spare, spareAsBytes); -- ops.mode = MTD_OOB_AUTO; -- ops.ooblen = 8; /* temp hack */ -- } else { -- ops.mode = MTD_OOB_RAW; -- ops.ooblen = YAFFS_BYTES_PER_SPARE; -- } -- ops.len = data ? dev->nDataBytesPerChunk : ops.ooblen; -- ops.datbuf = (u8 *)data; -- ops.ooboffs = 0; -- ops.oobbuf = spareAsBytes; -- retval = mtd->write_oob(mtd, addr, &ops); -- } --#else -- __u8 *spareAsBytes = (__u8 *) spare; -- -- if (data && spare) { -- if (dev->useNANDECC) -- retval = -- mtd->write_ecc(mtd, addr, dev->nDataBytesPerChunk, -- &dummy, data, spareAsBytes, -- &yaffs_oobinfo); -- else -- retval = -- mtd->write_ecc(mtd, addr, dev->nDataBytesPerChunk, -- &dummy, data, spareAsBytes, -- &yaffs_noeccinfo); -- } else { -- if (data) -- retval = -- mtd->write(mtd, addr, dev->nDataBytesPerChunk, &dummy, -- data); -- if (spare) -- retval = -- mtd->write_oob(mtd, addr, YAFFS_BYTES_PER_SPARE, -- &dummy, spareAsBytes); -- } --#endif -- -- if (retval == 0) -- return YAFFS_OK; -- else -- return YAFFS_FAIL; --} -- --int nandmtd_ReadChunkFromNAND(yaffs_Device *dev, int chunkInNAND, __u8 *data, -- yaffs_Spare *spare) --{ -- struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice); --#if (MTD_VERSION_CODE > MTD_VERSION(2, 6, 17)) -- struct mtd_oob_ops ops; --#endif -- size_t dummy; -- int retval = 0; -+#include "yaffs_linux.h" - -- loff_t addr = ((loff_t) chunkInNAND) * dev->nDataBytesPerChunk; --#if (MTD_VERSION_CODE > MTD_VERSION(2, 6, 17)) -- __u8 spareAsBytes[8]; /* OOB */ -- -- if (data && !spare) -- retval = mtd->read(mtd, addr, dev->nDataBytesPerChunk, -- &dummy, data); -- else if (spare) { -- if (dev->useNANDECC) { -- ops.mode = MTD_OOB_AUTO; -- ops.ooblen = 8; /* temp hack */ -- } else { -- ops.mode = MTD_OOB_RAW; -- ops.ooblen = YAFFS_BYTES_PER_SPARE; -- } -- ops.len = data ? dev->nDataBytesPerChunk : ops.ooblen; -- ops.datbuf = data; -- ops.ooboffs = 0; -- ops.oobbuf = spareAsBytes; -- retval = mtd->read_oob(mtd, addr, &ops); -- if (dev->useNANDECC) -- translate_oob2spare(spare, spareAsBytes); -- } --#else -- __u8 *spareAsBytes = (__u8 *) spare; -- -- if (data && spare) { -- if (dev->useNANDECC) { -- /* Careful, this call adds 2 ints */ -- /* to the end of the spare data. Calling function */ -- /* should allocate enough memory for spare, */ -- /* i.e. [YAFFS_BYTES_PER_SPARE+2*sizeof(int)]. */ -- retval = -- mtd->read_ecc(mtd, addr, dev->nDataBytesPerChunk, -- &dummy, data, spareAsBytes, -- &yaffs_oobinfo); -- } else { -- retval = -- mtd->read_ecc(mtd, addr, dev->nDataBytesPerChunk, -- &dummy, data, spareAsBytes, -- &yaffs_noeccinfo); -- } -- } else { -- if (data) -- retval = -- mtd->read(mtd, addr, dev->nDataBytesPerChunk, &dummy, -- data); -- if (spare) -- retval = -- mtd->read_oob(mtd, addr, YAFFS_BYTES_PER_SPARE, -- &dummy, spareAsBytes); -- } --#endif -- -- if (retval == 0) -- return YAFFS_OK; -- else -- return YAFFS_FAIL; --} -- --int nandmtd_EraseBlockInNAND(yaffs_Device *dev, int blockNumber) -+int nandmtd_EraseBlockInNAND(yaffs_dev_t *dev, int blockNumber) - { -- struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice); -+ struct mtd_info *mtd = yaffs_dev_to_mtd(dev); - __u32 addr = -- ((loff_t) blockNumber) * dev->nDataBytesPerChunk -- * dev->nChunksPerBlock; -+ ((loff_t) blockNumber) * dev->param.total_bytes_per_chunk -+ * dev->param.chunks_per_block; - struct erase_info ei; -+ - int retval = 0; - - ei.mtd = mtd; - ei.addr = addr; -- ei.len = dev->nDataBytesPerChunk * dev->nChunksPerBlock; -+ ei.len = dev->param.total_bytes_per_chunk * dev->param.chunks_per_block; - ei.time = 1000; - ei.retries = 2; - ei.callback = NULL; - ei.priv = (u_long) dev; - -- /* Todo finish off the ei if required */ -- -- sema_init(&dev->sem, 0); -- - retval = mtd->erase(mtd, &ei); - - if (retval == 0) -@@ -234,7 +49,7 @@ int nandmtd_EraseBlockInNAND(yaffs_Devic - return YAFFS_FAIL; - } - --int nandmtd_InitialiseNAND(yaffs_Device *dev) -+int nandmtd_InitialiseNAND(yaffs_dev_t *dev) - { - return YAFFS_OK; - } ---- a/fs/yaffs2/yaffs_mtdif.h -+++ b/fs/yaffs2/yaffs_mtdif.h -@@ -1,7 +1,7 @@ - /* - * YAFFS: Yet another Flash File System . A NAND-flash specific file system. - * -- * Copyright (C) 2002-2007 Aleph One Ltd. -+ * Copyright (C) 2002-2010 Aleph One Ltd. - * for Toby Churchill Ltd and Brightstar Engineering - * - * Created by Charles Manning <charles@aleph1.co.uk> -@@ -22,11 +22,6 @@ - extern struct nand_oobinfo yaffs_oobinfo; - extern struct nand_oobinfo yaffs_noeccinfo; - #endif -- --int nandmtd_WriteChunkToNAND(yaffs_Device *dev, int chunkInNAND, -- const __u8 *data, const yaffs_Spare *spare); --int nandmtd_ReadChunkFromNAND(yaffs_Device *dev, int chunkInNAND, __u8 *data, -- yaffs_Spare *spare); --int nandmtd_EraseBlockInNAND(yaffs_Device *dev, int blockNumber); --int nandmtd_InitialiseNAND(yaffs_Device *dev); -+int nandmtd_EraseBlockInNAND(yaffs_dev_t *dev, int blockNumber); -+int nandmtd_InitialiseNAND(yaffs_dev_t *dev); - #endif ---- /dev/null -+++ b/fs/yaffs2/yaffs_nameval.c -@@ -0,0 +1,197 @@ -+/* -+ * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. -+ * -+ * Copyright (C) 2002-2010 Aleph One Ltd. -+ * for Toby Churchill Ltd and Brightstar Engineering -+ * -+ * Created by Charles Manning <charles@aleph1.co.uk> -+ * -+ * This program is free software; you can redistribute it and/or modify -+ * it under the terms of the GNU General Public License version 2 as -+ * published by the Free Software Foundation. -+ */ -+ -+/* -+ * This simple implementation of a name-value store assumes a small number of values and fits -+ * into a small finite buffer. -+ * -+ * Each attribute is stored as a record: -+ * sizeof(int) bytes record size. -+ * strnlen+1 bytes name null terminated. -+ * nbytes value. -+ * ---------- -+ * total size stored in record size -+ * -+ * This code has not been tested with unicode yet. -+ */ -+ -+ -+#include "yaffs_nameval.h" -+ -+#include "yportenv.h" -+ -+static int nval_find(const char *xb, int xb_size, const YCHAR *name, -+ int *exist_size) -+{ -+ int pos=0; -+ int size; -+ -+ memcpy(&size,xb,sizeof(int)); -+ while(size > 0 && (size < xb_size) && (pos + size < xb_size)){ -+ if(yaffs_strncmp((YCHAR *)(xb+pos+sizeof(int)),name,size) == 0){ -+ if(exist_size) -+ *exist_size = size; -+ return pos; -+ } -+ pos += size; -+ if(pos < xb_size -sizeof(int)) -+ memcpy(&size,xb + pos,sizeof(int)); -+ else -+ size = 0; -+ } -+ if(exist_size) -+ *exist_size = 0; -+ return -1; -+} -+ -+static int nval_used(const char *xb, int xb_size) -+{ -+ int pos=0; -+ int size; -+ -+ memcpy(&size,xb + pos,sizeof(int)); -+ while(size > 0 && (size < xb_size) && (pos + size < xb_size)){ -+ pos += size; -+ if(pos < xb_size -sizeof(int)) -+ memcpy(&size,xb + pos,sizeof(int)); -+ else -+ size = 0; -+ } -+ return pos; -+} -+ -+int nval_del(char *xb, int xb_size, const YCHAR *name) -+{ -+ int pos = nval_find(xb, xb_size, name, NULL); -+ int size; -+ -+ if(pos >= 0 && pos < xb_size){ -+ /* Find size, shift rest over this record, then zero out the rest of buffer */ -+ memcpy(&size,xb+pos,sizeof(int)); -+ memcpy(xb + pos, xb + pos + size, xb_size - (pos + size)); -+ memset(xb + (xb_size - size),0,size); -+ return 0; -+ } else -+ return -ENODATA; -+} -+ -+int nval_set(char *xb, int xb_size, const YCHAR *name, const char *buf, int bsize, int flags) -+{ -+ int pos; -+ int namelen = yaffs_strnlen(name,xb_size); -+ int reclen; -+ int size_exist = 0; -+ int space; -+ int start; -+ -+ pos = nval_find(xb,xb_size,name, &size_exist); -+ -+ if(flags & XATTR_CREATE && pos >= 0) -+ return -EEXIST; -+ if(flags & XATTR_REPLACE && pos < 0) -+ return -ENODATA; -+ -+ start = nval_used(xb,xb_size); -+ space = xb_size - start + size_exist; -+ -+ reclen = (sizeof(int) + namelen + 1 + bsize); -+ -+ if(reclen > space) -+ return -ENOSPC; -+ -+ if(pos >= 0){ -+ nval_del(xb,xb_size,name); -+ start = nval_used(xb, xb_size); -+ } -+ -+ pos = start; -+ -+ memcpy(xb + pos,&reclen,sizeof(int)); -+ pos +=sizeof(int); -+ yaffs_strncpy((YCHAR *)(xb + pos), name, reclen); -+ pos+= (namelen+1); -+ memcpy(xb + pos,buf,bsize); -+ return 0; -+} -+ -+int nval_get(const char *xb, int xb_size, const YCHAR *name, char *buf, int bsize) -+{ -+ int pos = nval_find(xb,xb_size,name,NULL); -+ int size; -+ -+ if(pos >= 0 && pos< xb_size){ -+ -+ memcpy(&size,xb +pos,sizeof(int)); -+ pos+=sizeof(int); /* advance past record length */ -+ size -= sizeof(int); -+ -+ /* Advance over name string */ -+ while(xb[pos] && size > 0 && pos < xb_size){ -+ pos++; -+ size--; -+ } -+ /*Advance over NUL */ -+ pos++; -+ size--; -+ -+ if(size <= bsize){ -+ memcpy(buf,xb + pos,size); -+ return size; -+ } -+ -+ } -+ if(pos >= 0) -+ return -ERANGE; -+ else -+ return -ENODATA; -+} -+ -+int nval_list(const char *xb, int xb_size, char *buf, int bsize) -+{ -+ int pos = 0; -+ int size; -+ int name_len; -+ int ncopied = 0; -+ int filled = 0; -+ -+ memcpy(&size,xb + pos,sizeof(int)); -+ while(size > sizeof(int) && size <= xb_size && (pos + size) < xb_size && !filled){ -+ pos+= sizeof(int); -+ size-=sizeof(int); -+ name_len = yaffs_strnlen((YCHAR *)(xb + pos), size); -+ if(ncopied + name_len + 1 < bsize){ -+ memcpy(buf,xb+pos,name_len * sizeof(YCHAR)); -+ buf+= name_len; -+ *buf = '\0'; -+ buf++; -+ if(sizeof(YCHAR) > 1){ -+ *buf = '\0'; -+ buf++; -+ } -+ ncopied += (name_len+1); -+ } else -+ filled = 1; -+ pos+=size; -+ if(pos < xb_size -sizeof(int)) -+ memcpy(&size,xb + pos,sizeof(int)); -+ else -+ size = 0; -+ } -+ return ncopied; -+} -+ -+ -+int nval_hasvalues(const char *xb, int xb_size) -+{ -+ return nval_used(xb, xb_size) > 0; -+} ---- /dev/null -+++ b/fs/yaffs2/yaffs_nameval.h -@@ -0,0 +1,25 @@ -+/* -+ * YAFFS: Yet another Flash File System . A NAND-flash specific file system. -+ * -+ * Copyright (C) 2002-2010 Aleph One Ltd. -+ * for Toby Churchill Ltd and Brightstar Engineering -+ * -+ * Created by Charles Manning <charles@aleph1.co.uk> -+ * -+ * This program is free software; you can redistribute it and/or modify -+ * it under the terms of the GNU Lesser General Public License version 2.1 as -+ * published by the Free Software Foundation. -+ * -+ * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL. -+ */ -+#ifndef __NAMEVAL_H__ -+#define __NAMEVAL_H__ -+ -+#include "yportenv.h" -+ -+int nval_del(char *xb, int xb_size, const YCHAR *name); -+int nval_set(char *xb, int xb_size, const YCHAR *name, const char *buf, int bsize, int flags); -+int nval_get(const char *xb, int xb_size, const YCHAR *name, char *buf, int bsize); -+int nval_list(const char *xb, int xb_size, char *buf, int bsize); -+int nval_hasvalues(const char *xb, int xb_size); -+#endif ---- a/fs/yaffs2/yaffs_nand.c -+++ b/fs/yaffs2/yaffs_nand.c -@@ -1,7 +1,7 @@ - /* - * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. - * -- * Copyright (C) 2002-2007 Aleph One Ltd. -+ * Copyright (C) 2002-2010 Aleph One Ltd. - * for Toby Churchill Ltd and Brightstar Engineering - * - * Created by Charles Manning <charles@aleph1.co.uk> -@@ -11,124 +11,129 @@ - * published by the Free Software Foundation. - */ - --const char *yaffs_nand_c_version = -- "$Id: yaffs_nand.c,v 1.10 2009-03-06 17:20:54 wookey Exp $"; -- - #include "yaffs_nand.h" - #include "yaffs_tagscompat.h" - #include "yaffs_tagsvalidity.h" - - #include "yaffs_getblockinfo.h" - --int yaffs_ReadChunkWithTagsFromNAND(yaffs_Device *dev, int chunkInNAND, -+int yaffs_rd_chunk_tags_nand(yaffs_dev_t *dev, int nand_chunk, - __u8 *buffer, -- yaffs_ExtendedTags *tags) -+ yaffs_ext_tags *tags) - { - int result; -- yaffs_ExtendedTags localTags; -+ yaffs_ext_tags localTags; -+ -+ int realignedChunkInNAND = nand_chunk - dev->chunk_offset; - -- int realignedChunkInNAND = chunkInNAND - dev->chunkOffset; -+ dev->n_page_reads++; - - /* If there are no tags provided, use local tags to get prioritised gc working */ - if (!tags) - tags = &localTags; - -- if (dev->readChunkWithTagsFromNAND) -- result = dev->readChunkWithTagsFromNAND(dev, realignedChunkInNAND, buffer, -+ if (dev->param.read_chunk_tags_fn) -+ result = dev->param.read_chunk_tags_fn(dev, realignedChunkInNAND, buffer, - tags); - else -- result = yaffs_TagsCompatabilityReadChunkWithTagsFromNAND(dev, -+ result = yaffs_tags_compat_rd(dev, - realignedChunkInNAND, - buffer, - tags); - if (tags && -- tags->eccResult > YAFFS_ECC_RESULT_NO_ERROR) { -+ tags->ecc_result > YAFFS_ECC_RESULT_NO_ERROR) { - -- yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, chunkInNAND/dev->nChunksPerBlock); -- yaffs_HandleChunkError(dev, bi); -+ yaffs_block_info_t *bi; -+ bi = yaffs_get_block_info(dev, nand_chunk/dev->param.chunks_per_block); -+ yaffs_handle_chunk_error(dev, bi); - } - - return result; - } - --int yaffs_WriteChunkWithTagsToNAND(yaffs_Device *dev, -- int chunkInNAND, -+int yaffs_wr_chunk_tags_nand(yaffs_dev_t *dev, -+ int nand_chunk, - const __u8 *buffer, -- yaffs_ExtendedTags *tags) -+ yaffs_ext_tags *tags) - { -- chunkInNAND -= dev->chunkOffset; -+ -+ dev->n_page_writes++; -+ -+ nand_chunk -= dev->chunk_offset; - - - if (tags) { -- tags->sequenceNumber = dev->sequenceNumber; -- tags->chunkUsed = 1; -- if (!yaffs_ValidateTags(tags)) { -+ tags->seq_number = dev->seq_number; -+ tags->chunk_used = 1; -+ if (!yaffs_validate_tags(tags)) { - T(YAFFS_TRACE_ERROR, - (TSTR("Writing uninitialised tags" TENDSTR))); - YBUG(); - } - T(YAFFS_TRACE_WRITE, -- (TSTR("Writing chunk %d tags %d %d" TENDSTR), chunkInNAND, -- tags->objectId, tags->chunkId)); -+ (TSTR("Writing chunk %d tags %d %d" TENDSTR), nand_chunk, -+ tags->obj_id, tags->chunk_id)); - } else { - T(YAFFS_TRACE_ERROR, (TSTR("Writing with no tags" TENDSTR))); - YBUG(); - } - -- if (dev->writeChunkWithTagsToNAND) -- return dev->writeChunkWithTagsToNAND(dev, chunkInNAND, buffer, -+ if (dev->param.write_chunk_tags_fn) -+ return dev->param.write_chunk_tags_fn(dev, nand_chunk, buffer, - tags); - else -- return yaffs_TagsCompatabilityWriteChunkWithTagsToNAND(dev, -- chunkInNAND, -+ return yaffs_tags_compat_wr(dev, -+ nand_chunk, - buffer, - tags); - } - --int yaffs_MarkBlockBad(yaffs_Device *dev, int blockNo) -+int yaffs_mark_bad(yaffs_dev_t *dev, int block_no) - { -- blockNo -= dev->blockOffset; -+ block_no -= dev->block_offset; -+ - --; -- if (dev->markNANDBlockBad) -- return dev->markNANDBlockBad(dev, blockNo); -+ if (dev->param.bad_block_fn) -+ return dev->param.bad_block_fn(dev, block_no); - else -- return yaffs_TagsCompatabilityMarkNANDBlockBad(dev, blockNo); -+ return yaffs_tags_compat_mark_bad(dev, block_no); - } - --int yaffs_QueryInitialBlockState(yaffs_Device *dev, -- int blockNo, -- yaffs_BlockState *state, -- __u32 *sequenceNumber) -+int yaffs_query_init_block_state(yaffs_dev_t *dev, -+ int block_no, -+ yaffs_block_state_t *state, -+ __u32 *seq_number) - { -- blockNo -= dev->blockOffset; -+ block_no -= dev->block_offset; - -- if (dev->queryNANDBlock) -- return dev->queryNANDBlock(dev, blockNo, state, sequenceNumber); -+ if (dev->param.query_block_fn) -+ return dev->param.query_block_fn(dev, block_no, state, seq_number); - else -- return yaffs_TagsCompatabilityQueryNANDBlock(dev, blockNo, -+ return yaffs_tags_compat_query_block(dev, block_no, - state, -- sequenceNumber); -+ seq_number); - } - - --int yaffs_EraseBlockInNAND(struct yaffs_DeviceStruct *dev, -- int blockInNAND) -+int yaffs_erase_block(struct yaffs_dev_s *dev, -+ int flash_block) - { - int result; - -- blockInNAND -= dev->blockOffset; -+ flash_block -= dev->block_offset; - -+ dev->n_erasures++; - -- dev->nBlockErasures++; -- result = dev->eraseBlockInNAND(dev, blockInNAND); -+ result = dev->param.erase_fn(dev, flash_block); - - return result; - } - --int yaffs_InitialiseNAND(struct yaffs_DeviceStruct *dev) -+int yaffs_init_nand(struct yaffs_dev_s *dev) - { -- return dev->initialiseNAND(dev); -+ if(dev->param.initialise_flash_fn) -+ return dev->param.initialise_flash_fn(dev); -+ return YAFFS_OK; - } - - ---- a/fs/yaffs2/yaffs_nandemul2k.h -+++ b/fs/yaffs2/yaffs_nandemul2k.h -@@ -1,7 +1,7 @@ - /* - * YAFFS: Yet another Flash File System . A NAND-flash specific file system. - * -- * Copyright (C) 2002-2007 Aleph One Ltd. -+ * Copyright (C) 2002-2010 Aleph One Ltd. - * for Toby Churchill Ltd and Brightstar Engineering - * - * Created by Charles Manning <charles@aleph1.co.uk> -@@ -20,18 +20,18 @@ - - #include "yaffs_guts.h" - --int nandemul2k_WriteChunkWithTagsToNAND(struct yaffs_DeviceStruct *dev, -- int chunkInNAND, const __u8 *data, -- const yaffs_ExtendedTags *tags); --int nandemul2k_ReadChunkWithTagsFromNAND(struct yaffs_DeviceStruct *dev, -- int chunkInNAND, __u8 *data, -- yaffs_ExtendedTags *tags); --int nandemul2k_MarkNANDBlockBad(struct yaffs_DeviceStruct *dev, int blockNo); --int nandemul2k_QueryNANDBlock(struct yaffs_DeviceStruct *dev, int blockNo, -- yaffs_BlockState *state, __u32 *sequenceNumber); --int nandemul2k_EraseBlockInNAND(struct yaffs_DeviceStruct *dev, -- int blockInNAND); --int nandemul2k_InitialiseNAND(struct yaffs_DeviceStruct *dev); -+int nandemul2k_WriteChunkWithTagsToNAND(struct yaffs_dev_s *dev, -+ int nand_chunk, const __u8 *data, -+ const yaffs_ext_tags *tags); -+int nandemul2k_ReadChunkWithTagsFromNAND(struct yaffs_dev_s *dev, -+ int nand_chunk, __u8 *data, -+ yaffs_ext_tags *tags); -+int nandemul2k_MarkNANDBlockBad(struct yaffs_dev_s *dev, int block_no); -+int nandemul2k_QueryNANDBlock(struct yaffs_dev_s *dev, int block_no, -+ yaffs_block_state_t *state, __u32 *seq_number); -+int nandemul2k_EraseBlockInNAND(struct yaffs_dev_s *dev, -+ int flash_block); -+int nandemul2k_InitialiseNAND(struct yaffs_dev_s *dev); - int nandemul2k_GetBytesPerChunk(void); - int nandemul2k_GetChunksPerBlock(void); - int nandemul2k_GetNumberOfBlocks(void); ---- a/fs/yaffs2/yaffs_nand.h -+++ b/fs/yaffs2/yaffs_nand.h -@@ -1,7 +1,7 @@ - /* - * YAFFS: Yet another Flash File System . A NAND-flash specific file system. - * -- * Copyright (C) 2002-2007 Aleph One Ltd. -+ * Copyright (C) 2002-2010 Aleph One Ltd. - * for Toby Churchill Ltd and Brightstar Engineering - * - * Created by Charles Manning <charles@aleph1.co.uk> -@@ -19,26 +19,26 @@ - - - --int yaffs_ReadChunkWithTagsFromNAND(yaffs_Device *dev, int chunkInNAND, -+int yaffs_rd_chunk_tags_nand(yaffs_dev_t *dev, int nand_chunk, - __u8 *buffer, -- yaffs_ExtendedTags *tags); -+ yaffs_ext_tags *tags); - --int yaffs_WriteChunkWithTagsToNAND(yaffs_Device *dev, -- int chunkInNAND, -+int yaffs_wr_chunk_tags_nand(yaffs_dev_t *dev, -+ int nand_chunk, - const __u8 *buffer, -- yaffs_ExtendedTags *tags); -+ yaffs_ext_tags *tags); - --int yaffs_MarkBlockBad(yaffs_Device *dev, int blockNo); -+int yaffs_mark_bad(yaffs_dev_t *dev, int block_no); - --int yaffs_QueryInitialBlockState(yaffs_Device *dev, -- int blockNo, -- yaffs_BlockState *state, -- unsigned *sequenceNumber); -+int yaffs_query_init_block_state(yaffs_dev_t *dev, -+ int block_no, -+ yaffs_block_state_t *state, -+ unsigned *seq_number); - --int yaffs_EraseBlockInNAND(struct yaffs_DeviceStruct *dev, -- int blockInNAND); -+int yaffs_erase_block(struct yaffs_dev_s *dev, -+ int flash_block); - --int yaffs_InitialiseNAND(struct yaffs_DeviceStruct *dev); -+int yaffs_init_nand(struct yaffs_dev_s *dev); - - #endif - ---- a/fs/yaffs2/yaffs_packedtags1.c -+++ b/fs/yaffs2/yaffs_packedtags1.c -@@ -1,7 +1,7 @@ - /* - * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. - * -- * Copyright (C) 2002-2007 Aleph One Ltd. -+ * Copyright (C) 2002-2010 Aleph One Ltd. - * for Toby Churchill Ltd and Brightstar Engineering - * - * Created by Charles Manning <charles@aleph1.co.uk> -@@ -14,37 +14,37 @@ - #include "yaffs_packedtags1.h" - #include "yportenv.h" - --void yaffs_PackTags1(yaffs_PackedTags1 *pt, const yaffs_ExtendedTags *t) -+void yaffs_PackTags1(yaffs_PackedTags1 *pt, const yaffs_ext_tags *t) - { -- pt->chunkId = t->chunkId; -- pt->serialNumber = t->serialNumber; -- pt->byteCount = t->byteCount; -- pt->objectId = t->objectId; -+ pt->chunk_id = t->chunk_id; -+ pt->serial_number = t->serial_number; -+ pt->n_bytes = t->n_bytes; -+ pt->obj_id = t->obj_id; - pt->ecc = 0; -- pt->deleted = (t->chunkDeleted) ? 0 : 1; -+ pt->deleted = (t->is_deleted) ? 0 : 1; - pt->unusedStuff = 0; - pt->shouldBeFF = 0xFFFFFFFF; - - } - --void yaffs_UnpackTags1(yaffs_ExtendedTags *t, const yaffs_PackedTags1 *pt) -+void yaffs_unpack_tags1(yaffs_ext_tags *t, const yaffs_PackedTags1 *pt) - { - static const __u8 allFF[] = - { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, - 0xff }; - - if (memcmp(allFF, pt, sizeof(yaffs_PackedTags1))) { -- t->blockBad = 0; -+ t->block_bad = 0; - if (pt->shouldBeFF != 0xFFFFFFFF) -- t->blockBad = 1; -- t->chunkUsed = 1; -- t->objectId = pt->objectId; -- t->chunkId = pt->chunkId; -- t->byteCount = pt->byteCount; -- t->eccResult = YAFFS_ECC_RESULT_NO_ERROR; -- t->chunkDeleted = (pt->deleted) ? 0 : 1; -- t->serialNumber = pt->serialNumber; -+ t->block_bad = 1; -+ t->chunk_used = 1; -+ t->obj_id = pt->obj_id; -+ t->chunk_id = pt->chunk_id; -+ t->n_bytes = pt->n_bytes; -+ t->ecc_result = YAFFS_ECC_RESULT_NO_ERROR; -+ t->is_deleted = (pt->deleted) ? 0 : 1; -+ t->serial_number = pt->serial_number; - } else { -- memset(t, 0, sizeof(yaffs_ExtendedTags)); -+ memset(t, 0, sizeof(yaffs_ext_tags)); - } - } ---- a/fs/yaffs2/yaffs_packedtags1.h -+++ b/fs/yaffs2/yaffs_packedtags1.h -@@ -1,7 +1,7 @@ - /* - * YAFFS: Yet another Flash File System . A NAND-flash specific file system. - * -- * Copyright (C) 2002-2007 Aleph One Ltd. -+ * Copyright (C) 2002-2010 Aleph One Ltd. - * for Toby Churchill Ltd and Brightstar Engineering - * - * Created by Charles Manning <charles@aleph1.co.uk> -@@ -21,10 +21,10 @@ - #include "yaffs_guts.h" - - typedef struct { -- unsigned chunkId:20; -- unsigned serialNumber:2; -- unsigned byteCount:10; -- unsigned objectId:18; -+ unsigned chunk_id:20; -+ unsigned serial_number:2; -+ unsigned n_bytes:10; -+ unsigned obj_id:18; - unsigned ecc:12; - unsigned deleted:1; - unsigned unusedStuff:1; -@@ -32,6 +32,6 @@ typedef struct { - - } yaffs_PackedTags1; - --void yaffs_PackTags1(yaffs_PackedTags1 *pt, const yaffs_ExtendedTags *t); --void yaffs_UnpackTags1(yaffs_ExtendedTags *t, const yaffs_PackedTags1 *pt); -+void yaffs_PackTags1(yaffs_PackedTags1 *pt, const yaffs_ext_tags *t); -+void yaffs_unpack_tags1(yaffs_ext_tags *t, const yaffs_PackedTags1 *pt); - #endif ---- a/fs/yaffs2/yaffs_packedtags2.c -+++ b/fs/yaffs2/yaffs_packedtags2.c -@@ -1,7 +1,7 @@ - /* - * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. - * -- * Copyright (C) 2002-2007 Aleph One Ltd. -+ * Copyright (C) 2002-2010 Aleph One Ltd. - * for Toby Churchill Ltd and Brightstar Engineering - * - * Created by Charles Manning <charles@aleph1.co.uk> -@@ -13,6 +13,7 @@ - - #include "yaffs_packedtags2.h" - #include "yportenv.h" -+#include "yaffs_trace.h" - #include "yaffs_tagsvalidity.h" - - /* This code packs a set of extended tags into a binary structure for -@@ -24,7 +25,7 @@ - * This is defined by having the EXTRA_HEADER_INFO_FLAG set. - */ - --/* Extra flags applied to chunkId */ -+/* Extra flags applied to chunk_id */ - - #define EXTRA_HEADER_INFO_FLAG 0x80000000 - #define EXTRA_SHRINK_FLAG 0x40000000 -@@ -42,53 +43,53 @@ static void yaffs_DumpPackedTags2TagsPar - { - T(YAFFS_TRACE_MTD, - (TSTR("packed tags obj %d chunk %d byte %d seq %d" TENDSTR), -- ptt->objectId, ptt->chunkId, ptt->byteCount, -- ptt->sequenceNumber)); -+ ptt->obj_id, ptt->chunk_id, ptt->n_bytes, -+ ptt->seq_number)); - } - static void yaffs_DumpPackedTags2(const yaffs_PackedTags2 *pt) - { - yaffs_DumpPackedTags2TagsPart(&pt->t); - } - --static void yaffs_DumpTags2(const yaffs_ExtendedTags *t) -+static void yaffs_DumpTags2(const yaffs_ext_tags *t) - { - T(YAFFS_TRACE_MTD, - (TSTR - ("ext.tags eccres %d blkbad %d chused %d obj %d chunk%d byte %d del %d ser %d seq %d" -- TENDSTR), t->eccResult, t->blockBad, t->chunkUsed, t->objectId, -- t->chunkId, t->byteCount, t->chunkDeleted, t->serialNumber, -- t->sequenceNumber)); -+ TENDSTR), t->ecc_result, t->block_bad, t->chunk_used, t->obj_id, -+ t->chunk_id, t->n_bytes, t->is_deleted, t->serial_number, -+ t->seq_number)); - - } - - void yaffs_PackTags2TagsPart(yaffs_PackedTags2TagsPart *ptt, -- const yaffs_ExtendedTags *t) -+ const yaffs_ext_tags *t) - { -- ptt->chunkId = t->chunkId; -- ptt->sequenceNumber = t->sequenceNumber; -- ptt->byteCount = t->byteCount; -- ptt->objectId = t->objectId; -+ ptt->chunk_id = t->chunk_id; -+ ptt->seq_number = t->seq_number; -+ ptt->n_bytes = t->n_bytes; -+ ptt->obj_id = t->obj_id; - -- if (t->chunkId == 0 && t->extraHeaderInfoAvailable) { -+ if (t->chunk_id == 0 && t->extra_available) { - /* Store the extra header info instead */ -- /* We save the parent object in the chunkId */ -- ptt->chunkId = EXTRA_HEADER_INFO_FLAG -- | t->extraParentObjectId; -- if (t->extraIsShrinkHeader) -- ptt->chunkId |= EXTRA_SHRINK_FLAG; -- if (t->extraShadows) -- ptt->chunkId |= EXTRA_SHADOWS_FLAG; -- -- ptt->objectId &= ~EXTRA_OBJECT_TYPE_MASK; -- ptt->objectId |= -- (t->extraObjectType << EXTRA_OBJECT_TYPE_SHIFT); -- -- if (t->extraObjectType == YAFFS_OBJECT_TYPE_HARDLINK) -- ptt->byteCount = t->extraEquivalentObjectId; -- else if (t->extraObjectType == YAFFS_OBJECT_TYPE_FILE) -- ptt->byteCount = t->extraFileLength; -+ /* We save the parent object in the chunk_id */ -+ ptt->chunk_id = EXTRA_HEADER_INFO_FLAG -+ | t->extra_parent_id; -+ if (t->extra_is_shrink) -+ ptt->chunk_id |= EXTRA_SHRINK_FLAG; -+ if (t->extra_shadows) -+ ptt->chunk_id |= EXTRA_SHADOWS_FLAG; -+ -+ ptt->obj_id &= ~EXTRA_OBJECT_TYPE_MASK; -+ ptt->obj_id |= -+ (t->extra_obj_type << EXTRA_OBJECT_TYPE_SHIFT); -+ -+ if (t->extra_obj_type == YAFFS_OBJECT_TYPE_HARDLINK) -+ ptt->n_bytes = t->extra_equiv_id; -+ else if (t->extra_obj_type == YAFFS_OBJECT_TYPE_FILE) -+ ptt->n_bytes = t->extra_length; - else -- ptt->byteCount = 0; -+ ptt->n_bytes = 0; - } - - yaffs_DumpPackedTags2TagsPart(ptt); -@@ -96,59 +97,56 @@ void yaffs_PackTags2TagsPart(yaffs_Packe - } - - --void yaffs_PackTags2(yaffs_PackedTags2 *pt, const yaffs_ExtendedTags *t) -+void yaffs_PackTags2(yaffs_PackedTags2 *pt, const yaffs_ext_tags *t, int tagsECC) - { - yaffs_PackTags2TagsPart(&pt->t, t); - --#ifndef YAFFS_IGNORE_TAGS_ECC -- { -- yaffs_ECCCalculateOther((unsigned char *)&pt->t, -+ if(tagsECC) -+ yaffs_ecc_calc_other((unsigned char *)&pt->t, - sizeof(yaffs_PackedTags2TagsPart), - &pt->ecc); -- } --#endif - } - - --void yaffs_UnpackTags2TagsPart(yaffs_ExtendedTags *t, -+void yaffs_unpack_tags2tags_part(yaffs_ext_tags *t, - yaffs_PackedTags2TagsPart *ptt) - { - -- memset(t, 0, sizeof(yaffs_ExtendedTags)); -+ memset(t, 0, sizeof(yaffs_ext_tags)); - -- yaffs_InitialiseTags(t); -+ yaffs_init_tags(t); - -- if (ptt->sequenceNumber != 0xFFFFFFFF) { -- t->blockBad = 0; -- t->chunkUsed = 1; -- t->objectId = ptt->objectId; -- t->chunkId = ptt->chunkId; -- t->byteCount = ptt->byteCount; -- t->chunkDeleted = 0; -- t->serialNumber = 0; -- t->sequenceNumber = ptt->sequenceNumber; -+ if (ptt->seq_number != 0xFFFFFFFF) { -+ t->block_bad = 0; -+ t->chunk_used = 1; -+ t->obj_id = ptt->obj_id; -+ t->chunk_id = ptt->chunk_id; -+ t->n_bytes = ptt->n_bytes; -+ t->is_deleted = 0; -+ t->serial_number = 0; -+ t->seq_number = ptt->seq_number; - - /* Do extra header info stuff */ - -- if (ptt->chunkId & EXTRA_HEADER_INFO_FLAG) { -- t->chunkId = 0; -- t->byteCount = 0; -- -- t->extraHeaderInfoAvailable = 1; -- t->extraParentObjectId = -- ptt->chunkId & (~(ALL_EXTRA_FLAGS)); -- t->extraIsShrinkHeader = -- (ptt->chunkId & EXTRA_SHRINK_FLAG) ? 1 : 0; -- t->extraShadows = -- (ptt->chunkId & EXTRA_SHADOWS_FLAG) ? 1 : 0; -- t->extraObjectType = -- ptt->objectId >> EXTRA_OBJECT_TYPE_SHIFT; -- t->objectId &= ~EXTRA_OBJECT_TYPE_MASK; -+ if (ptt->chunk_id & EXTRA_HEADER_INFO_FLAG) { -+ t->chunk_id = 0; -+ t->n_bytes = 0; -+ -+ t->extra_available = 1; -+ t->extra_parent_id = -+ ptt->chunk_id & (~(ALL_EXTRA_FLAGS)); -+ t->extra_is_shrink = -+ (ptt->chunk_id & EXTRA_SHRINK_FLAG) ? 1 : 0; -+ t->extra_shadows = -+ (ptt->chunk_id & EXTRA_SHADOWS_FLAG) ? 1 : 0; -+ t->extra_obj_type = -+ ptt->obj_id >> EXTRA_OBJECT_TYPE_SHIFT; -+ t->obj_id &= ~EXTRA_OBJECT_TYPE_MASK; - -- if (t->extraObjectType == YAFFS_OBJECT_TYPE_HARDLINK) -- t->extraEquivalentObjectId = ptt->byteCount; -+ if (t->extra_obj_type == YAFFS_OBJECT_TYPE_HARDLINK) -+ t->extra_equiv_id = ptt->n_bytes; - else -- t->extraFileLength = ptt->byteCount; -+ t->extra_length = ptt->n_bytes; - } - } - -@@ -158,49 +156,43 @@ void yaffs_UnpackTags2TagsPart(yaffs_Ext - } - - --void yaffs_UnpackTags2(yaffs_ExtendedTags *t, yaffs_PackedTags2 *pt) -+void yaffs_unpack_tags2(yaffs_ext_tags *t, yaffs_PackedTags2 *pt, int tagsECC) - { - -- yaffs_ECCResult eccResult = YAFFS_ECC_RESULT_NO_ERROR; -+ yaffs_ecc_result ecc_result = YAFFS_ECC_RESULT_NO_ERROR; - -- if (pt->t.sequenceNumber != 0xFFFFFFFF) { -- /* Page is in use */ --#ifndef YAFFS_IGNORE_TAGS_ECC -- { -- yaffs_ECCOther ecc; -- int result; -- yaffs_ECCCalculateOther((unsigned char *)&pt->t, -- sizeof -- (yaffs_PackedTags2TagsPart), -- &ecc); -- result = -- yaffs_ECCCorrectOther((unsigned char *)&pt->t, -- sizeof -- (yaffs_PackedTags2TagsPart), -- &pt->ecc, &ecc); -- switch (result) { -+ if (pt->t.seq_number != 0xFFFFFFFF && -+ tagsECC){ -+ /* Chunk is in use and we need to do ECC */ -+ -+ yaffs_ECCOther ecc; -+ int result; -+ yaffs_ecc_calc_other((unsigned char *)&pt->t, -+ sizeof(yaffs_PackedTags2TagsPart), -+ &ecc); -+ result = yaffs_ecc_correct_other((unsigned char *)&pt->t, -+ sizeof(yaffs_PackedTags2TagsPart), -+ &pt->ecc, &ecc); -+ switch (result) { - case 0: -- eccResult = YAFFS_ECC_RESULT_NO_ERROR; -+ ecc_result = YAFFS_ECC_RESULT_NO_ERROR; - break; - case 1: -- eccResult = YAFFS_ECC_RESULT_FIXED; -+ ecc_result = YAFFS_ECC_RESULT_FIXED; - break; - case -1: -- eccResult = YAFFS_ECC_RESULT_UNFIXED; -+ ecc_result = YAFFS_ECC_RESULT_UNFIXED; - break; - default: -- eccResult = YAFFS_ECC_RESULT_UNKNOWN; -- } -+ ecc_result = YAFFS_ECC_RESULT_UNKNOWN; - } --#endif - } - -- yaffs_UnpackTags2TagsPart(t, &pt->t); -+ yaffs_unpack_tags2tags_part(t, &pt->t); - -- t->eccResult = eccResult; -+ t->ecc_result = ecc_result; - - yaffs_DumpPackedTags2(pt); - yaffs_DumpTags2(t); -- - } - ---- a/fs/yaffs2/yaffs_packedtags2.h -+++ b/fs/yaffs2/yaffs_packedtags2.h -@@ -1,7 +1,7 @@ - /* - * YAFFS: Yet another Flash File System . A NAND-flash specific file system. - * -- * Copyright (C) 2002-2007 Aleph One Ltd. -+ * Copyright (C) 2002-2010 Aleph One Ltd. - * for Toby Churchill Ltd and Brightstar Engineering - * - * Created by Charles Manning <charles@aleph1.co.uk> -@@ -22,10 +22,10 @@ - #include "yaffs_ecc.h" - - typedef struct { -- unsigned sequenceNumber; -- unsigned objectId; -- unsigned chunkId; -- unsigned byteCount; -+ unsigned seq_number; -+ unsigned obj_id; -+ unsigned chunk_id; -+ unsigned n_bytes; - } yaffs_PackedTags2TagsPart; - - typedef struct { -@@ -34,10 +34,10 @@ typedef struct { - } yaffs_PackedTags2; - - /* Full packed tags with ECC, used for oob tags */ --void yaffs_PackTags2(yaffs_PackedTags2 *pt, const yaffs_ExtendedTags *t); --void yaffs_UnpackTags2(yaffs_ExtendedTags *t, yaffs_PackedTags2 *pt); -+void yaffs_PackTags2(yaffs_PackedTags2 *pt, const yaffs_ext_tags *t, int tagsECC); -+void yaffs_unpack_tags2(yaffs_ext_tags *t, yaffs_PackedTags2 *pt, int tagsECC); - - /* Only the tags part (no ECC for use with inband tags */ --void yaffs_PackTags2TagsPart(yaffs_PackedTags2TagsPart *pt, const yaffs_ExtendedTags *t); --void yaffs_UnpackTags2TagsPart(yaffs_ExtendedTags *t, yaffs_PackedTags2TagsPart *pt); -+void yaffs_PackTags2TagsPart(yaffs_PackedTags2TagsPart *pt, const yaffs_ext_tags *t); -+void yaffs_unpack_tags2tags_part(yaffs_ext_tags *t, yaffs_PackedTags2TagsPart *pt); - #endif ---- a/fs/yaffs2/yaffs_qsort.h -+++ b/fs/yaffs2/yaffs_qsort.h -@@ -1,7 +1,7 @@ - /* - * YAFFS: Yet another Flash File System . A NAND-flash specific file system. - * -- * Copyright (C) 2002-2007 Aleph One Ltd. -+ * Copyright (C) 2002-2010 Aleph One Ltd. - * for Toby Churchill Ltd and Brightstar Engineering - * - * Created by Charles Manning <charles@aleph1.co.uk> -@@ -17,7 +17,18 @@ - #ifndef __YAFFS_QSORT_H__ - #define __YAFFS_QSORT_H__ - -+#ifdef __KERNEL__ -+#include <linux/sort.h> -+ -+extern void yaffs_qsort(void *const base, size_t total_elems, size_t size, -+ int (*cmp)(const void *, const void *)){ -+ sort(base, total_elems, size, cmp, NULL); -+} -+ -+#else -+ - extern void yaffs_qsort(void *const base, size_t total_elems, size_t size, - int (*cmp)(const void *, const void *)); - - #endif -+#endif ---- a/fs/yaffs2/yaffs_tagscompat.c -+++ b/fs/yaffs2/yaffs_tagscompat.c -@@ -1,7 +1,7 @@ - /* - * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. - * -- * Copyright (C) 2002-2007 Aleph One Ltd. -+ * Copyright (C) 2002-2010 Aleph One Ltd. - * for Toby Churchill Ltd and Brightstar Engineering - * - * Created by Charles Manning <charles@aleph1.co.uk> -@@ -15,19 +15,20 @@ - #include "yaffs_tagscompat.h" - #include "yaffs_ecc.h" - #include "yaffs_getblockinfo.h" -+#include "yaffs_trace.h" - --static void yaffs_HandleReadDataError(yaffs_Device *dev, int chunkInNAND); -+static void yaffs_handle_rd_data_error(yaffs_dev_t *dev, int nand_chunk); - #ifdef NOTYET --static void yaffs_CheckWrittenBlock(yaffs_Device *dev, int chunkInNAND); --static void yaffs_HandleWriteChunkOk(yaffs_Device *dev, int chunkInNAND, -+static void yaffs_check_written_block(yaffs_dev_t *dev, int nand_chunk); -+static void yaffs_handle_chunk_wr_ok(yaffs_dev_t *dev, int nand_chunk, - const __u8 *data, -- const yaffs_Spare *spare); --static void yaffs_HandleUpdateChunk(yaffs_Device *dev, int chunkInNAND, -- const yaffs_Spare *spare); --static void yaffs_HandleWriteChunkError(yaffs_Device *dev, int chunkInNAND); -+ const yaffs_spare *spare); -+static void yaffs_handle_chunk_update(yaffs_dev_t *dev, int nand_chunk, -+ const yaffs_spare *spare); -+static void yaffs_handle_chunk_wr_error(yaffs_dev_t *dev, int nand_chunk); - #endif - --static const char yaffs_countBitsTable[256] = { -+static const char yaffs_count_bits_table[256] = { - 0, 1, 1, 2, 1, 2, 2, 3, 1, 2, 2, 3, 2, 3, 3, 4, - 1, 2, 2, 3, 2, 3, 3, 4, 2, 3, 3, 4, 3, 4, 4, 5, - 1, 2, 2, 3, 2, 3, 3, 4, 2, 3, 3, 4, 3, 4, 4, 5, -@@ -46,26 +47,26 @@ static const char yaffs_countBitsTable[2 - 4, 5, 5, 6, 5, 6, 6, 7, 5, 6, 6, 7, 6, 7, 7, 8 - }; - --int yaffs_CountBits(__u8 x) -+int yaffs_count_bits(__u8 x) - { - int retVal; -- retVal = yaffs_countBitsTable[x]; -+ retVal = yaffs_count_bits_table[x]; - return retVal; - } - - /********** Tags ECC calculations *********/ - --void yaffs_CalcECC(const __u8 *data, yaffs_Spare *spare) -+void yaffs_calc_ecc(const __u8 *data, yaffs_spare *spare) - { -- yaffs_ECCCalculate(data, spare->ecc1); -- yaffs_ECCCalculate(&data[256], spare->ecc2); -+ yaffs_ecc_cacl(data, spare->ecc1); -+ yaffs_ecc_cacl(&data[256], spare->ecc2); - } - --void yaffs_CalcTagsECC(yaffs_Tags *tags) -+void yaffs_calc_tags_ecc(yaffs_tags_t *tags) - { - /* Calculate an ecc */ - -- unsigned char *b = ((yaffs_TagsUnion *) tags)->asBytes; -+ unsigned char *b = ((yaffs_tags_union_t *) tags)->as_bytes; - unsigned i, j; - unsigned ecc = 0; - unsigned bit = 0; -@@ -84,24 +85,24 @@ void yaffs_CalcTagsECC(yaffs_Tags *tags) - - } - --int yaffs_CheckECCOnTags(yaffs_Tags *tags) -+int yaffs_check_tags_ecc(yaffs_tags_t *tags) - { - unsigned ecc = tags->ecc; - -- yaffs_CalcTagsECC(tags); -+ yaffs_calc_tags_ecc(tags); - - ecc ^= tags->ecc; - - if (ecc && ecc <= 64) { - /* TODO: Handle the failure better. Retire? */ -- unsigned char *b = ((yaffs_TagsUnion *) tags)->asBytes; -+ unsigned char *b = ((yaffs_tags_union_t *) tags)->as_bytes; - - ecc--; - - b[ecc / 8] ^= (1 << (ecc & 7)); - - /* Now recvalc the ecc */ -- yaffs_CalcTagsECC(tags); -+ yaffs_calc_tags_ecc(tags); - - return 1; /* recovered error */ - } else if (ecc) { -@@ -115,76 +116,73 @@ int yaffs_CheckECCOnTags(yaffs_Tags *tag - - /********** Tags **********/ - --static void yaffs_LoadTagsIntoSpare(yaffs_Spare *sparePtr, -- yaffs_Tags *tagsPtr) -+static void yaffs_load_tags_to_spare(yaffs_spare *sparePtr, -+ yaffs_tags_t *tagsPtr) - { -- yaffs_TagsUnion *tu = (yaffs_TagsUnion *) tagsPtr; -+ yaffs_tags_union_t *tu = (yaffs_tags_union_t *) tagsPtr; - -- yaffs_CalcTagsECC(tagsPtr); -+ yaffs_calc_tags_ecc(tagsPtr); - -- sparePtr->tagByte0 = tu->asBytes[0]; -- sparePtr->tagByte1 = tu->asBytes[1]; -- sparePtr->tagByte2 = tu->asBytes[2]; -- sparePtr->tagByte3 = tu->asBytes[3]; -- sparePtr->tagByte4 = tu->asBytes[4]; -- sparePtr->tagByte5 = tu->asBytes[5]; -- sparePtr->tagByte6 = tu->asBytes[6]; -- sparePtr->tagByte7 = tu->asBytes[7]; -+ sparePtr->tb0 = tu->as_bytes[0]; -+ sparePtr->tb1 = tu->as_bytes[1]; -+ sparePtr->tb2 = tu->as_bytes[2]; -+ sparePtr->tb3 = tu->as_bytes[3]; -+ sparePtr->tb4 = tu->as_bytes[4]; -+ sparePtr->tb5 = tu->as_bytes[5]; -+ sparePtr->tb6 = tu->as_bytes[6]; -+ sparePtr->tb7 = tu->as_bytes[7]; - } - --static void yaffs_GetTagsFromSpare(yaffs_Device *dev, yaffs_Spare *sparePtr, -- yaffs_Tags *tagsPtr) -+static void yaffs_get_tags_from_spare(yaffs_dev_t *dev, yaffs_spare *sparePtr, -+ yaffs_tags_t *tagsPtr) - { -- yaffs_TagsUnion *tu = (yaffs_TagsUnion *) tagsPtr; -+ yaffs_tags_union_t *tu = (yaffs_tags_union_t *) tagsPtr; - int result; - -- tu->asBytes[0] = sparePtr->tagByte0; -- tu->asBytes[1] = sparePtr->tagByte1; -- tu->asBytes[2] = sparePtr->tagByte2; -- tu->asBytes[3] = sparePtr->tagByte3; -- tu->asBytes[4] = sparePtr->tagByte4; -- tu->asBytes[5] = sparePtr->tagByte5; -- tu->asBytes[6] = sparePtr->tagByte6; -- tu->asBytes[7] = sparePtr->tagByte7; -+ tu->as_bytes[0] = sparePtr->tb0; -+ tu->as_bytes[1] = sparePtr->tb1; -+ tu->as_bytes[2] = sparePtr->tb2; -+ tu->as_bytes[3] = sparePtr->tb3; -+ tu->as_bytes[4] = sparePtr->tb4; -+ tu->as_bytes[5] = sparePtr->tb5; -+ tu->as_bytes[6] = sparePtr->tb6; -+ tu->as_bytes[7] = sparePtr->tb7; - -- result = yaffs_CheckECCOnTags(tagsPtr); -+ result = yaffs_check_tags_ecc(tagsPtr); - if (result > 0) -- dev->tagsEccFixed++; -+ dev->n_tags_ecc_fixed++; - else if (result < 0) -- dev->tagsEccUnfixed++; -+ dev->n_tags_ecc_unfixed++; - } - --static void yaffs_SpareInitialise(yaffs_Spare *spare) -+static void yaffs_spare_init(yaffs_spare *spare) - { -- memset(spare, 0xFF, sizeof(yaffs_Spare)); -+ memset(spare, 0xFF, sizeof(yaffs_spare)); - } - --static int yaffs_WriteChunkToNAND(struct yaffs_DeviceStruct *dev, -- int chunkInNAND, const __u8 *data, -- yaffs_Spare *spare) -+static int yaffs_wr_nand(struct yaffs_dev_s *dev, -+ int nand_chunk, const __u8 *data, -+ yaffs_spare *spare) - { -- if (chunkInNAND < dev->startBlock * dev->nChunksPerBlock) { -+ if (nand_chunk < dev->param.start_block * dev->param.chunks_per_block) { - T(YAFFS_TRACE_ERROR, - (TSTR("**>> yaffs chunk %d is not valid" TENDSTR), -- chunkInNAND)); -+ nand_chunk)); - return YAFFS_FAIL; - } - -- dev->nPageWrites++; -- return dev->writeChunkToNAND(dev, chunkInNAND, data, spare); -+ return dev->param.write_chunk_fn(dev, nand_chunk, data, spare); - } - --static int yaffs_ReadChunkFromNAND(struct yaffs_DeviceStruct *dev, -- int chunkInNAND, -+static int yaffs_rd_chunk_nand(struct yaffs_dev_s *dev, -+ int nand_chunk, - __u8 *data, -- yaffs_Spare *spare, -- yaffs_ECCResult *eccResult, -+ yaffs_spare *spare, -+ yaffs_ecc_result *ecc_result, - int doErrorCorrection) - { - int retVal; -- yaffs_Spare localSpare; -- -- dev->nPageReads++; -+ yaffs_spare localSpare; - - if (!spare && data) { - /* If we don't have a real spare, then we use a local one. */ -@@ -192,107 +190,107 @@ static int yaffs_ReadChunkFromNAND(struc - spare = &localSpare; - } - -- if (!dev->useNANDECC) { -- retVal = dev->readChunkFromNAND(dev, chunkInNAND, data, spare); -+ if (!dev->param.use_nand_ecc) { -+ retVal = dev->param.read_chunk_fn(dev, nand_chunk, data, spare); - if (data && doErrorCorrection) { - /* Do ECC correction */ - /* Todo handle any errors */ -- int eccResult1, eccResult2; -+ int ecc_result1, ecc_result2; - __u8 calcEcc[3]; - -- yaffs_ECCCalculate(data, calcEcc); -- eccResult1 = -- yaffs_ECCCorrect(data, spare->ecc1, calcEcc); -- yaffs_ECCCalculate(&data[256], calcEcc); -- eccResult2 = -- yaffs_ECCCorrect(&data[256], spare->ecc2, calcEcc); -+ yaffs_ecc_cacl(data, calcEcc); -+ ecc_result1 = -+ yaffs_ecc_correct(data, spare->ecc1, calcEcc); -+ yaffs_ecc_cacl(&data[256], calcEcc); -+ ecc_result2 = -+ yaffs_ecc_correct(&data[256], spare->ecc2, calcEcc); - -- if (eccResult1 > 0) { -+ if (ecc_result1 > 0) { - T(YAFFS_TRACE_ERROR, - (TSTR - ("**>>yaffs ecc error fix performed on chunk %d:0" -- TENDSTR), chunkInNAND)); -- dev->eccFixed++; -- } else if (eccResult1 < 0) { -+ TENDSTR), nand_chunk)); -+ dev->n_ecc_fixed++; -+ } else if (ecc_result1 < 0) { - T(YAFFS_TRACE_ERROR, - (TSTR - ("**>>yaffs ecc error unfixed on chunk %d:0" -- TENDSTR), chunkInNAND)); -- dev->eccUnfixed++; -+ TENDSTR), nand_chunk)); -+ dev->n_ecc_unfixed++; - } - -- if (eccResult2 > 0) { -+ if (ecc_result2 > 0) { - T(YAFFS_TRACE_ERROR, - (TSTR - ("**>>yaffs ecc error fix performed on chunk %d:1" -- TENDSTR), chunkInNAND)); -- dev->eccFixed++; -- } else if (eccResult2 < 0) { -+ TENDSTR), nand_chunk)); -+ dev->n_ecc_fixed++; -+ } else if (ecc_result2 < 0) { - T(YAFFS_TRACE_ERROR, - (TSTR - ("**>>yaffs ecc error unfixed on chunk %d:1" -- TENDSTR), chunkInNAND)); -- dev->eccUnfixed++; -+ TENDSTR), nand_chunk)); -+ dev->n_ecc_unfixed++; - } - -- if (eccResult1 || eccResult2) { -+ if (ecc_result1 || ecc_result2) { - /* We had a data problem on this page */ -- yaffs_HandleReadDataError(dev, chunkInNAND); -+ yaffs_handle_rd_data_error(dev, nand_chunk); - } - -- if (eccResult1 < 0 || eccResult2 < 0) -- *eccResult = YAFFS_ECC_RESULT_UNFIXED; -- else if (eccResult1 > 0 || eccResult2 > 0) -- *eccResult = YAFFS_ECC_RESULT_FIXED; -+ if (ecc_result1 < 0 || ecc_result2 < 0) -+ *ecc_result = YAFFS_ECC_RESULT_UNFIXED; -+ else if (ecc_result1 > 0 || ecc_result2 > 0) -+ *ecc_result = YAFFS_ECC_RESULT_FIXED; - else -- *eccResult = YAFFS_ECC_RESULT_NO_ERROR; -+ *ecc_result = YAFFS_ECC_RESULT_NO_ERROR; - } - } else { - /* Must allocate enough memory for spare+2*sizeof(int) */ - /* for ecc results from device. */ -- struct yaffs_NANDSpare nspare; -+ struct yaffs_nand_spare nspare; - - memset(&nspare, 0, sizeof(nspare)); - -- retVal = dev->readChunkFromNAND(dev, chunkInNAND, data, -- (yaffs_Spare *) &nspare); -- memcpy(spare, &nspare, sizeof(yaffs_Spare)); -+ retVal = dev->param.read_chunk_fn(dev, nand_chunk, data, -+ (yaffs_spare *) &nspare); -+ memcpy(spare, &nspare, sizeof(yaffs_spare)); - if (data && doErrorCorrection) { - if (nspare.eccres1 > 0) { - T(YAFFS_TRACE_ERROR, - (TSTR - ("**>>mtd ecc error fix performed on chunk %d:0" -- TENDSTR), chunkInNAND)); -+ TENDSTR), nand_chunk)); - } else if (nspare.eccres1 < 0) { - T(YAFFS_TRACE_ERROR, - (TSTR - ("**>>mtd ecc error unfixed on chunk %d:0" -- TENDSTR), chunkInNAND)); -+ TENDSTR), nand_chunk)); - } - - if (nspare.eccres2 > 0) { - T(YAFFS_TRACE_ERROR, - (TSTR - ("**>>mtd ecc error fix performed on chunk %d:1" -- TENDSTR), chunkInNAND)); -+ TENDSTR), nand_chunk)); - } else if (nspare.eccres2 < 0) { - T(YAFFS_TRACE_ERROR, - (TSTR - ("**>>mtd ecc error unfixed on chunk %d:1" -- TENDSTR), chunkInNAND)); -+ TENDSTR), nand_chunk)); - } - - if (nspare.eccres1 || nspare.eccres2) { - /* We had a data problem on this page */ -- yaffs_HandleReadDataError(dev, chunkInNAND); -+ yaffs_handle_rd_data_error(dev, nand_chunk); - } - - if (nspare.eccres1 < 0 || nspare.eccres2 < 0) -- *eccResult = YAFFS_ECC_RESULT_UNFIXED; -+ *ecc_result = YAFFS_ECC_RESULT_UNFIXED; - else if (nspare.eccres1 > 0 || nspare.eccres2 > 0) -- *eccResult = YAFFS_ECC_RESULT_FIXED; -+ *ecc_result = YAFFS_ECC_RESULT_FIXED; - else -- *eccResult = YAFFS_ECC_RESULT_NO_ERROR; -+ *ecc_result = YAFFS_ECC_RESULT_NO_ERROR; - - } - } -@@ -300,17 +298,17 @@ static int yaffs_ReadChunkFromNAND(struc - } - - #ifdef NOTYET --static int yaffs_CheckChunkErased(struct yaffs_DeviceStruct *dev, -- int chunkInNAND) -+static int yaffs_check_chunk_erased(struct yaffs_dev_s *dev, -+ int nand_chunk) - { - static int init; - static __u8 cmpbuf[YAFFS_BYTES_PER_CHUNK]; - static __u8 data[YAFFS_BYTES_PER_CHUNK]; - /* Might as well always allocate the larger size for */ -- /* dev->useNANDECC == true; */ -- static __u8 spare[sizeof(struct yaffs_NANDSpare)]; -+ /* dev->param.use_nand_ecc == true; */ -+ static __u8 spare[sizeof(struct yaffs_nand_spare)]; - -- dev->readChunkFromNAND(dev, chunkInNAND, data, (yaffs_Spare *) spare); -+ dev->param.read_chunk_fn(dev, nand_chunk, data, (yaffs_spare *) spare); - - if (!init) { - memset(cmpbuf, 0xff, YAFFS_BYTES_PER_CHUNK); -@@ -331,14 +329,14 @@ static int yaffs_CheckChunkErased(struct - * Functions for robustisizing - */ - --static void yaffs_HandleReadDataError(yaffs_Device *dev, int chunkInNAND) -+static void yaffs_handle_rd_data_error(yaffs_dev_t *dev, int nand_chunk) - { -- int blockInNAND = chunkInNAND / dev->nChunksPerBlock; -+ int flash_block = nand_chunk / dev->param.chunks_per_block; - - /* Mark the block for retirement */ -- yaffs_GetBlockInfo(dev, blockInNAND + dev->blockOffset)->needsRetiring = 1; -+ yaffs_get_block_info(dev, flash_block + dev->block_offset)->needs_retiring = 1; - T(YAFFS_TRACE_ERROR | YAFFS_TRACE_BAD_BLOCKS, -- (TSTR("**>>Block %d marked for retirement" TENDSTR), blockInNAND)); -+ (TSTR("**>>Block %d marked for retirement" TENDSTR), flash_block)); - - /* TODO: - * Just do a garbage collection on the affected block -@@ -348,44 +346,44 @@ static void yaffs_HandleReadDataError(ya - } - - #ifdef NOTYET --static void yaffs_CheckWrittenBlock(yaffs_Device *dev, int chunkInNAND) -+static void yaffs_check_written_block(yaffs_dev_t *dev, int nand_chunk) - { - } - --static void yaffs_HandleWriteChunkOk(yaffs_Device *dev, int chunkInNAND, -+static void yaffs_handle_chunk_wr_ok(yaffs_dev_t *dev, int nand_chunk, - const __u8 *data, -- const yaffs_Spare *spare) -+ const yaffs_spare *spare) - { - } - --static void yaffs_HandleUpdateChunk(yaffs_Device *dev, int chunkInNAND, -- const yaffs_Spare *spare) -+static void yaffs_handle_chunk_update(yaffs_dev_t *dev, int nand_chunk, -+ const yaffs_spare *spare) - { - } - --static void yaffs_HandleWriteChunkError(yaffs_Device *dev, int chunkInNAND) -+static void yaffs_handle_chunk_wr_error(yaffs_dev_t *dev, int nand_chunk) - { -- int blockInNAND = chunkInNAND / dev->nChunksPerBlock; -+ int flash_block = nand_chunk / dev->param.chunks_per_block; - - /* Mark the block for retirement */ -- yaffs_GetBlockInfo(dev, blockInNAND)->needsRetiring = 1; -+ yaffs_get_block_info(dev, flash_block)->needs_retiring = 1; - /* Delete the chunk */ -- yaffs_DeleteChunk(dev, chunkInNAND, 1, __LINE__); -+ yaffs_chunk_del(dev, nand_chunk, 1, __LINE__); - } - --static int yaffs_VerifyCompare(const __u8 *d0, const __u8 *d1, -- const yaffs_Spare *s0, const yaffs_Spare *s1) -+static int yaffs_verify_cmp(const __u8 *d0, const __u8 *d1, -+ const yaffs_spare *s0, const yaffs_spare *s1) - { - - if (memcmp(d0, d1, YAFFS_BYTES_PER_CHUNK) != 0 || -- s0->tagByte0 != s1->tagByte0 || -- s0->tagByte1 != s1->tagByte1 || -- s0->tagByte2 != s1->tagByte2 || -- s0->tagByte3 != s1->tagByte3 || -- s0->tagByte4 != s1->tagByte4 || -- s0->tagByte5 != s1->tagByte5 || -- s0->tagByte6 != s1->tagByte6 || -- s0->tagByte7 != s1->tagByte7 || -+ s0->tb0 != s1->tb0 || -+ s0->tb1 != s1->tb1 || -+ s0->tb2 != s1->tb2 || -+ s0->tb3 != s1->tb3 || -+ s0->tb4 != s1->tb4 || -+ s0->tb5 != s1->tb5 || -+ s0->tb6 != s1->tb6 || -+ s0->tb7 != s1->tb7 || - s0->ecc1[0] != s1->ecc1[0] || - s0->ecc1[1] != s1->ecc1[1] || - s0->ecc1[2] != s1->ecc1[2] || -@@ -398,53 +396,53 @@ static int yaffs_VerifyCompare(const __u - } - #endif /* NOTYET */ - --int yaffs_TagsCompatabilityWriteChunkWithTagsToNAND(yaffs_Device *dev, -- int chunkInNAND, -+int yaffs_tags_compat_wr(yaffs_dev_t *dev, -+ int nand_chunk, - const __u8 *data, -- const yaffs_ExtendedTags *eTags) -+ const yaffs_ext_tags *eTags) - { -- yaffs_Spare spare; -- yaffs_Tags tags; -+ yaffs_spare spare; -+ yaffs_tags_t tags; - -- yaffs_SpareInitialise(&spare); -+ yaffs_spare_init(&spare); - -- if (eTags->chunkDeleted) -- spare.pageStatus = 0; -+ if (eTags->is_deleted) -+ spare.page_status = 0; - else { -- tags.objectId = eTags->objectId; -- tags.chunkId = eTags->chunkId; -+ tags.obj_id = eTags->obj_id; -+ tags.chunk_id = eTags->chunk_id; - -- tags.byteCountLSB = eTags->byteCount & 0x3ff; -+ tags.n_bytes_lsb = eTags->n_bytes & 0x3ff; - -- if (dev->nDataBytesPerChunk >= 1024) -- tags.byteCountMSB = (eTags->byteCount >> 10) & 3; -+ if (dev->data_bytes_per_chunk >= 1024) -+ tags.n_bytes_msb = (eTags->n_bytes >> 10) & 3; - else -- tags.byteCountMSB = 3; -+ tags.n_bytes_msb = 3; - - -- tags.serialNumber = eTags->serialNumber; -+ tags.serial_number = eTags->serial_number; - -- if (!dev->useNANDECC && data) -- yaffs_CalcECC(data, &spare); -+ if (!dev->param.use_nand_ecc && data) -+ yaffs_calc_ecc(data, &spare); - -- yaffs_LoadTagsIntoSpare(&spare, &tags); -+ yaffs_load_tags_to_spare(&spare, &tags); - - } - -- return yaffs_WriteChunkToNAND(dev, chunkInNAND, data, &spare); -+ return yaffs_wr_nand(dev, nand_chunk, data, &spare); - } - --int yaffs_TagsCompatabilityReadChunkWithTagsFromNAND(yaffs_Device *dev, -- int chunkInNAND, -+int yaffs_tags_compat_rd(yaffs_dev_t *dev, -+ int nand_chunk, - __u8 *data, -- yaffs_ExtendedTags *eTags) -+ yaffs_ext_tags *eTags) - { - -- yaffs_Spare spare; -- yaffs_Tags tags; -- yaffs_ECCResult eccResult = YAFFS_ECC_RESULT_UNKNOWN; -+ yaffs_spare spare; -+ yaffs_tags_t tags; -+ yaffs_ecc_result ecc_result = YAFFS_ECC_RESULT_UNKNOWN; - -- static yaffs_Spare spareFF; -+ static yaffs_spare spareFF; - static int init; - - if (!init) { -@@ -452,33 +450,33 @@ int yaffs_TagsCompatabilityReadChunkWith - init = 1; - } - -- if (yaffs_ReadChunkFromNAND -- (dev, chunkInNAND, data, &spare, &eccResult, 1)) { -+ if (yaffs_rd_chunk_nand -+ (dev, nand_chunk, data, &spare, &ecc_result, 1)) { - /* eTags may be NULL */ - if (eTags) { - - int deleted = -- (yaffs_CountBits(spare.pageStatus) < 7) ? 1 : 0; -+ (yaffs_count_bits(spare.page_status) < 7) ? 1 : 0; - -- eTags->chunkDeleted = deleted; -- eTags->eccResult = eccResult; -- eTags->blockBad = 0; /* We're reading it */ -+ eTags->is_deleted = deleted; -+ eTags->ecc_result = ecc_result; -+ eTags->block_bad = 0; /* We're reading it */ - /* therefore it is not a bad block */ -- eTags->chunkUsed = -+ eTags->chunk_used = - (memcmp(&spareFF, &spare, sizeof(spareFF)) != - 0) ? 1 : 0; - -- if (eTags->chunkUsed) { -- yaffs_GetTagsFromSpare(dev, &spare, &tags); -+ if (eTags->chunk_used) { -+ yaffs_get_tags_from_spare(dev, &spare, &tags); - -- eTags->objectId = tags.objectId; -- eTags->chunkId = tags.chunkId; -- eTags->byteCount = tags.byteCountLSB; -+ eTags->obj_id = tags.obj_id; -+ eTags->chunk_id = tags.chunk_id; -+ eTags->n_bytes = tags.n_bytes_lsb; - -- if (dev->nDataBytesPerChunk >= 1024) -- eTags->byteCount |= (((unsigned) tags.byteCountMSB) << 10); -+ if (dev->data_bytes_per_chunk >= 1024) -+ eTags->n_bytes |= (((unsigned) tags.n_bytes_msb) << 10); - -- eTags->serialNumber = tags.serialNumber; -+ eTags->serial_number = tags.serial_number; - } - } - -@@ -488,49 +486,49 @@ int yaffs_TagsCompatabilityReadChunkWith - } - } - --int yaffs_TagsCompatabilityMarkNANDBlockBad(struct yaffs_DeviceStruct *dev, -- int blockInNAND) -+int yaffs_tags_compat_mark_bad(struct yaffs_dev_s *dev, -+ int flash_block) - { - -- yaffs_Spare spare; -+ yaffs_spare spare; - -- memset(&spare, 0xff, sizeof(yaffs_Spare)); -+ memset(&spare, 0xff, sizeof(yaffs_spare)); - -- spare.blockStatus = 'Y'; -+ spare.block_status = 'Y'; - -- yaffs_WriteChunkToNAND(dev, blockInNAND * dev->nChunksPerBlock, NULL, -+ yaffs_wr_nand(dev, flash_block * dev->param.chunks_per_block, NULL, - &spare); -- yaffs_WriteChunkToNAND(dev, blockInNAND * dev->nChunksPerBlock + 1, -+ yaffs_wr_nand(dev, flash_block * dev->param.chunks_per_block + 1, - NULL, &spare); - - return YAFFS_OK; - - } - --int yaffs_TagsCompatabilityQueryNANDBlock(struct yaffs_DeviceStruct *dev, -- int blockNo, -- yaffs_BlockState *state, -- __u32 *sequenceNumber) -+int yaffs_tags_compat_query_block(struct yaffs_dev_s *dev, -+ int block_no, -+ yaffs_block_state_t *state, -+ __u32 *seq_number) - { - -- yaffs_Spare spare0, spare1; -- static yaffs_Spare spareFF; -+ yaffs_spare spare0, spare1; -+ static yaffs_spare spareFF; - static int init; -- yaffs_ECCResult dummy; -+ yaffs_ecc_result dummy; - - if (!init) { - memset(&spareFF, 0xFF, sizeof(spareFF)); - init = 1; - } - -- *sequenceNumber = 0; -+ *seq_number = 0; - -- yaffs_ReadChunkFromNAND(dev, blockNo * dev->nChunksPerBlock, NULL, -+ yaffs_rd_chunk_nand(dev, block_no * dev->param.chunks_per_block, NULL, - &spare0, &dummy, 1); -- yaffs_ReadChunkFromNAND(dev, blockNo * dev->nChunksPerBlock + 1, NULL, -+ yaffs_rd_chunk_nand(dev, block_no * dev->param.chunks_per_block + 1, NULL, - &spare1, &dummy, 1); - -- if (yaffs_CountBits(spare0.blockStatus & spare1.blockStatus) < 7) -+ if (yaffs_count_bits(spare0.block_status & spare1.block_status) < 7) - *state = YAFFS_BLOCK_STATE_DEAD; - else if (memcmp(&spareFF, &spare0, sizeof(spareFF)) == 0) - *state = YAFFS_BLOCK_STATE_EMPTY; ---- a/fs/yaffs2/yaffs_tagscompat.h -+++ b/fs/yaffs2/yaffs_tagscompat.h -@@ -1,7 +1,7 @@ - /* - * YAFFS: Yet another Flash File System . A NAND-flash specific file system. - * -- * Copyright (C) 2002-2007 Aleph One Ltd. -+ * Copyright (C) 2002-2010 Aleph One Ltd. - * for Toby Churchill Ltd and Brightstar Engineering - * - * Created by Charles Manning <charles@aleph1.co.uk> -@@ -17,23 +17,23 @@ - #define __YAFFS_TAGSCOMPAT_H__ - - #include "yaffs_guts.h" --int yaffs_TagsCompatabilityWriteChunkWithTagsToNAND(yaffs_Device *dev, -- int chunkInNAND, -+int yaffs_tags_compat_wr(yaffs_dev_t *dev, -+ int nand_chunk, - const __u8 *data, -- const yaffs_ExtendedTags *tags); --int yaffs_TagsCompatabilityReadChunkWithTagsFromNAND(yaffs_Device *dev, -- int chunkInNAND, -+ const yaffs_ext_tags *tags); -+int yaffs_tags_compat_rd(yaffs_dev_t *dev, -+ int nand_chunk, - __u8 *data, -- yaffs_ExtendedTags *tags); --int yaffs_TagsCompatabilityMarkNANDBlockBad(struct yaffs_DeviceStruct *dev, -- int blockNo); --int yaffs_TagsCompatabilityQueryNANDBlock(struct yaffs_DeviceStruct *dev, -- int blockNo, -- yaffs_BlockState *state, -- __u32 *sequenceNumber); -+ yaffs_ext_tags *tags); -+int yaffs_tags_compat_mark_bad(struct yaffs_dev_s *dev, -+ int block_no); -+int yaffs_tags_compat_query_block(struct yaffs_dev_s *dev, -+ int block_no, -+ yaffs_block_state_t *state, -+ __u32 *seq_number); - --void yaffs_CalcTagsECC(yaffs_Tags *tags); --int yaffs_CheckECCOnTags(yaffs_Tags *tags); --int yaffs_CountBits(__u8 byte); -+void yaffs_calc_tags_ecc(yaffs_tags_t *tags); -+int yaffs_check_tags_ecc(yaffs_tags_t *tags); -+int yaffs_count_bits(__u8 byte); - - #endif ---- a/fs/yaffs2/yaffs_tagsvalidity.c -+++ b/fs/yaffs2/yaffs_tagsvalidity.c -@@ -1,7 +1,7 @@ - /* - * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. - * -- * Copyright (C) 2002-2007 Aleph One Ltd. -+ * Copyright (C) 2002-2010 Aleph One Ltd. - * for Toby Churchill Ltd and Brightstar Engineering - * - * Created by Charles Manning <charles@aleph1.co.uk> -@@ -13,16 +13,16 @@ - - #include "yaffs_tagsvalidity.h" - --void yaffs_InitialiseTags(yaffs_ExtendedTags *tags) -+void yaffs_init_tags(yaffs_ext_tags *tags) - { -- memset(tags, 0, sizeof(yaffs_ExtendedTags)); -- tags->validMarker0 = 0xAAAAAAAA; -- tags->validMarker1 = 0x55555555; -+ memset(tags, 0, sizeof(yaffs_ext_tags)); -+ tags->validity1 = 0xAAAAAAAA; -+ tags->validty1 = 0x55555555; - } - --int yaffs_ValidateTags(yaffs_ExtendedTags *tags) -+int yaffs_validate_tags(yaffs_ext_tags *tags) - { -- return (tags->validMarker0 == 0xAAAAAAAA && -- tags->validMarker1 == 0x55555555); -+ return (tags->validity1 == 0xAAAAAAAA && -+ tags->validty1 == 0x55555555); - - } ---- a/fs/yaffs2/yaffs_tagsvalidity.h -+++ b/fs/yaffs2/yaffs_tagsvalidity.h -@@ -1,7 +1,7 @@ - /* - * YAFFS: Yet another Flash File System . A NAND-flash specific file system. - * -- * Copyright (C) 2002-2007 Aleph One Ltd. -+ * Copyright (C) 2002-2010 Aleph One Ltd. - * for Toby Churchill Ltd and Brightstar Engineering - * - * Created by Charles Manning <charles@aleph1.co.uk> -@@ -19,6 +19,6 @@ - - #include "yaffs_guts.h" - --void yaffs_InitialiseTags(yaffs_ExtendedTags *tags); --int yaffs_ValidateTags(yaffs_ExtendedTags *tags); -+void yaffs_init_tags(yaffs_ext_tags *tags); -+int yaffs_validate_tags(yaffs_ext_tags *tags); - #endif ---- /dev/null -+++ b/fs/yaffs2/yaffs_trace.h -@@ -0,0 +1,60 @@ -+/* -+ * YAFFS: Yet another Flash File System . A NAND-flash specific file system. -+ * -+ * Copyright (C) 2002-2010 Aleph One Ltd. -+ * for Toby Churchill Ltd and Brightstar Engineering -+ * -+ * Created by Charles Manning <charles@aleph1.co.uk> -+ * -+ * This program is free software; you can redistribute it and/or modify -+ * it under the terms of the GNU Lesser General Public License version 2.1 as -+ * published by the Free Software Foundation. -+ * -+ * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL. -+ */ -+ -+ -+#ifndef __YTRACE_H__ -+#define __YTRACE_H__ -+ -+extern unsigned int yaffs_trace_mask; -+extern unsigned int yaffs_wr_attempts; -+ -+/* -+ * Tracing flags. -+ * The flags masked in YAFFS_TRACE_ALWAYS are always traced. -+ */ -+ -+#define YAFFS_TRACE_OS 0x00000002 -+#define YAFFS_TRACE_ALLOCATE 0x00000004 -+#define YAFFS_TRACE_SCAN 0x00000008 -+#define YAFFS_TRACE_BAD_BLOCKS 0x00000010 -+#define YAFFS_TRACE_ERASE 0x00000020 -+#define YAFFS_TRACE_GC 0x00000040 -+#define YAFFS_TRACE_WRITE 0x00000080 -+#define YAFFS_TRACE_TRACING 0x00000100 -+#define YAFFS_TRACE_DELETION 0x00000200 -+#define YAFFS_TRACE_BUFFERS 0x00000400 -+#define YAFFS_TRACE_NANDACCESS 0x00000800 -+#define YAFFS_TRACE_GC_DETAIL 0x00001000 -+#define YAFFS_TRACE_SCAN_DEBUG 0x00002000 -+#define YAFFS_TRACE_MTD 0x00004000 -+#define YAFFS_TRACE_CHECKPOINT 0x00008000 -+ -+#define YAFFS_TRACE_VERIFY 0x00010000 -+#define YAFFS_TRACE_VERIFY_NAND 0x00020000 -+#define YAFFS_TRACE_VERIFY_FULL 0x00040000 -+#define YAFFS_TRACE_VERIFY_ALL 0x000F0000 -+ -+#define YAFFS_TRACE_SYNC 0x00100000 -+#define YAFFS_TRACE_BACKGROUND 0x00200000 -+#define YAFFS_TRACE_LOCK 0x00400000 -+ -+#define YAFFS_TRACE_ERROR 0x40000000 -+#define YAFFS_TRACE_BUG 0x80000000 -+#define YAFFS_TRACE_ALWAYS 0xF0000000 -+ -+ -+#define T(mask, p) do { if ((mask) & (yaffs_trace_mask | YAFFS_TRACE_ALWAYS)) TOUT(p); } while (0) -+ -+#endif ---- /dev/null -+++ b/fs/yaffs2/yaffs_verify.c -@@ -0,0 +1,626 @@ -+/* -+ * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. -+ * -+ * Copyright (C) 2002-2010 Aleph One Ltd. -+ * for Toby Churchill Ltd and Brightstar Engineering -+ * -+ * Created by Charles Manning <charles@aleph1.co.uk> -+ * -+ * This program is free software; you can redistribute it and/or modify -+ * it under the terms of the GNU General Public License version 2 as -+ * published by the Free Software Foundation. -+ */ -+ -+ -+#include "yaffs_verify.h" -+#include "yaffs_trace.h" -+#include "yaffs_bitmap.h" -+#include "yaffs_getblockinfo.h" -+#include "yaffs_nand.h" -+ -+int yaffs_skip_verification(yaffs_dev_t *dev) -+{ -+ dev=dev; -+ return !(yaffs_trace_mask & (YAFFS_TRACE_VERIFY | YAFFS_TRACE_VERIFY_FULL)); -+} -+ -+static int yaffs_skip_full_verification(yaffs_dev_t *dev) -+{ -+ dev=dev; -+ return !(yaffs_trace_mask & (YAFFS_TRACE_VERIFY_FULL)); -+} -+ -+static int yaffs_skip_nand_verification(yaffs_dev_t *dev) -+{ -+ dev=dev; -+ return !(yaffs_trace_mask & (YAFFS_TRACE_VERIFY_NAND)); -+} -+ -+ -+static const char *block_stateName[] = { -+"Unknown", -+"Needs scanning", -+"Scanning", -+"Empty", -+"Allocating", -+"Full", -+"Dirty", -+"Checkpoint", -+"Collecting", -+"Dead" -+}; -+ -+ -+void yaffs_verify_blk(yaffs_dev_t *dev, yaffs_block_info_t *bi, int n) -+{ -+ int actuallyUsed; -+ int inUse; -+ -+ if (yaffs_skip_verification(dev)) -+ return; -+ -+ /* Report illegal runtime states */ -+ if (bi->block_state >= YAFFS_NUMBER_OF_BLOCK_STATES) -+ T(YAFFS_TRACE_VERIFY, (TSTR("Block %d has undefined state %d"TENDSTR), n, bi->block_state)); -+ -+ switch (bi->block_state) { -+ case YAFFS_BLOCK_STATE_UNKNOWN: -+ case YAFFS_BLOCK_STATE_SCANNING: -+ case YAFFS_BLOCK_STATE_NEEDS_SCANNING: -+ T(YAFFS_TRACE_VERIFY, (TSTR("Block %d has bad run-state %s"TENDSTR), -+ n, block_stateName[bi->block_state])); -+ } -+ -+ /* Check pages in use and soft deletions are legal */ -+ -+ actuallyUsed = bi->pages_in_use - bi->soft_del_pages; -+ -+ if (bi->pages_in_use < 0 || bi->pages_in_use > dev->param.chunks_per_block || -+ bi->soft_del_pages < 0 || bi->soft_del_pages > dev->param.chunks_per_block || -+ actuallyUsed < 0 || actuallyUsed > dev->param.chunks_per_block) -+ T(YAFFS_TRACE_VERIFY, (TSTR("Block %d has illegal values pages_in_used %d soft_del_pages %d"TENDSTR), -+ n, bi->pages_in_use, bi->soft_del_pages)); -+ -+ -+ /* Check chunk bitmap legal */ -+ inUse = yaffs_count_chunk_bits(dev, n); -+ if (inUse != bi->pages_in_use) -+ T(YAFFS_TRACE_VERIFY, (TSTR("Block %d has inconsistent values pages_in_use %d counted chunk bits %d"TENDSTR), -+ n, bi->pages_in_use, inUse)); -+ -+} -+ -+ -+ -+void yaffs_verify_collected_blk(yaffs_dev_t *dev, yaffs_block_info_t *bi, int n) -+{ -+ yaffs_verify_blk(dev, bi, n); -+ -+ /* After collection the block should be in the erased state */ -+ -+ if (bi->block_state != YAFFS_BLOCK_STATE_COLLECTING && -+ bi->block_state != YAFFS_BLOCK_STATE_EMPTY) { -+ T(YAFFS_TRACE_ERROR, (TSTR("Block %d is in state %d after gc, should be erased"TENDSTR), -+ n, bi->block_state)); -+ } -+} -+ -+void yaffs_verify_blocks(yaffs_dev_t *dev) -+{ -+ int i; -+ int nBlocksPerState[YAFFS_NUMBER_OF_BLOCK_STATES]; -+ int nIllegalBlockStates = 0; -+ -+ if (yaffs_skip_verification(dev)) -+ return; -+ -+ memset(nBlocksPerState, 0, sizeof(nBlocksPerState)); -+ -+ for (i = dev->internal_start_block; i <= dev->internal_end_block; i++) { -+ yaffs_block_info_t *bi = yaffs_get_block_info(dev, i); -+ yaffs_verify_blk(dev, bi, i); -+ -+ if (bi->block_state < YAFFS_NUMBER_OF_BLOCK_STATES) -+ nBlocksPerState[bi->block_state]++; -+ else -+ nIllegalBlockStates++; -+ } -+ -+ T(YAFFS_TRACE_VERIFY, (TSTR(""TENDSTR))); -+ T(YAFFS_TRACE_VERIFY, (TSTR("Block summary"TENDSTR))); -+ -+ T(YAFFS_TRACE_VERIFY, (TSTR("%d blocks have illegal states"TENDSTR), nIllegalBlockStates)); -+ if (nBlocksPerState[YAFFS_BLOCK_STATE_ALLOCATING] > 1) -+ T(YAFFS_TRACE_VERIFY, (TSTR("Too many allocating blocks"TENDSTR))); -+ -+ for (i = 0; i < YAFFS_NUMBER_OF_BLOCK_STATES; i++) -+ T(YAFFS_TRACE_VERIFY, -+ (TSTR("%s %d blocks"TENDSTR), -+ block_stateName[i], nBlocksPerState[i])); -+ -+ if (dev->blocks_in_checkpt != nBlocksPerState[YAFFS_BLOCK_STATE_CHECKPOINT]) -+ T(YAFFS_TRACE_VERIFY, -+ (TSTR("Checkpoint block count wrong dev %d count %d"TENDSTR), -+ dev->blocks_in_checkpt, nBlocksPerState[YAFFS_BLOCK_STATE_CHECKPOINT])); -+ -+ if (dev->n_erased_blocks != nBlocksPerState[YAFFS_BLOCK_STATE_EMPTY]) -+ T(YAFFS_TRACE_VERIFY, -+ (TSTR("Erased block count wrong dev %d count %d"TENDSTR), -+ dev->n_erased_blocks, nBlocksPerState[YAFFS_BLOCK_STATE_EMPTY])); -+ -+ if (nBlocksPerState[YAFFS_BLOCK_STATE_COLLECTING] > 1) -+ T(YAFFS_TRACE_VERIFY, -+ (TSTR("Too many collecting blocks %d (max is 1)"TENDSTR), -+ nBlocksPerState[YAFFS_BLOCK_STATE_COLLECTING])); -+ -+ T(YAFFS_TRACE_VERIFY, (TSTR(""TENDSTR))); -+ -+} -+ -+/* -+ * Verify the object header. oh must be valid, but obj and tags may be NULL in which -+ * case those tests will not be performed. -+ */ -+void yaffs_verify_oh(yaffs_obj_t *obj, yaffs_obj_header *oh, yaffs_ext_tags *tags, int parentCheck) -+{ -+ if (obj && yaffs_skip_verification(obj->my_dev)) -+ return; -+ -+ if (!(tags && obj && oh)) { -+ T(YAFFS_TRACE_VERIFY, -+ (TSTR("Verifying object header tags %p obj %p oh %p"TENDSTR), -+ tags, obj, oh)); -+ return; -+ } -+ -+ if (oh->type <= YAFFS_OBJECT_TYPE_UNKNOWN || -+ oh->type > YAFFS_OBJECT_TYPE_MAX) -+ T(YAFFS_TRACE_VERIFY, -+ (TSTR("Obj %d header type is illegal value 0x%x"TENDSTR), -+ tags->obj_id, oh->type)); -+ -+ if (tags->obj_id != obj->obj_id) -+ T(YAFFS_TRACE_VERIFY, -+ (TSTR("Obj %d header mismatch obj_id %d"TENDSTR), -+ tags->obj_id, obj->obj_id)); -+ -+ -+ /* -+ * Check that the object's parent ids match if parentCheck requested. -+ * -+ * Tests do not apply to the root object. -+ */ -+ -+ if (parentCheck && tags->obj_id > 1 && !obj->parent) -+ T(YAFFS_TRACE_VERIFY, -+ (TSTR("Obj %d header mismatch parent_id %d obj->parent is NULL"TENDSTR), -+ tags->obj_id, oh->parent_obj_id)); -+ -+ if (parentCheck && obj->parent && -+ oh->parent_obj_id != obj->parent->obj_id && -+ (oh->parent_obj_id != YAFFS_OBJECTID_UNLINKED || -+ obj->parent->obj_id != YAFFS_OBJECTID_DELETED)) -+ T(YAFFS_TRACE_VERIFY, -+ (TSTR("Obj %d header mismatch parent_id %d parent_obj_id %d"TENDSTR), -+ tags->obj_id, oh->parent_obj_id, obj->parent->obj_id)); -+ -+ if (tags->obj_id > 1 && oh->name[0] == 0) /* Null name */ -+ T(YAFFS_TRACE_VERIFY, -+ (TSTR("Obj %d header name is NULL"TENDSTR), -+ obj->obj_id)); -+ -+ if (tags->obj_id > 1 && ((__u8)(oh->name[0])) == 0xff) /* Trashed name */ -+ T(YAFFS_TRACE_VERIFY, -+ (TSTR("Obj %d header name is 0xFF"TENDSTR), -+ obj->obj_id)); -+} -+ -+ -+#if 0 -+/* Not being used, but don't want to throw away yet */ -+int yaffs_verify_tnode_worker(yaffs_obj_t *obj, yaffs_tnode_t *tn, -+ __u32 level, int chunk_offset) -+{ -+ int i; -+ yaffs_dev_t *dev = obj->my_dev; -+ int ok = 1; -+ -+ if (tn) { -+ if (level > 0) { -+ -+ for (i = 0; i < YAFFS_NTNODES_INTERNAL && ok; i++) { -+ if (tn->internal[i]) { -+ ok = yaffs_verify_tnode_worker(obj, -+ tn->internal[i], -+ level - 1, -+ (chunk_offset<<YAFFS_TNODES_INTERNAL_BITS) + i); -+ } -+ } -+ } else if (level == 0) { -+ yaffs_ext_tags tags; -+ __u32 obj_id = obj->obj_id; -+ -+ chunk_offset <<= YAFFS_TNODES_LEVEL0_BITS; -+ -+ for (i = 0; i < YAFFS_NTNODES_LEVEL0; i++) { -+ __u32 theChunk = yaffs_get_group_base(dev, tn, i); -+ -+ if (theChunk > 0) { -+ /* T(~0,(TSTR("verifying (%d:%d) %d"TENDSTR),tags.obj_id,tags.chunk_id,theChunk)); */ -+ yaffs_rd_chunk_tags_nand(dev, theChunk, NULL, &tags); -+ if (tags.obj_id != obj_id || tags.chunk_id != chunk_offset) { -+ T(~0, (TSTR("Object %d chunk_id %d NAND mismatch chunk %d tags (%d:%d)"TENDSTR), -+ obj_id, chunk_offset, theChunk, -+ tags.obj_id, tags.chunk_id)); -+ } -+ } -+ chunk_offset++; -+ } -+ } -+ } -+ -+ return ok; -+ -+} -+ -+#endif -+ -+void yaffs_verify_file(yaffs_obj_t *obj) -+{ -+ int requiredTallness; -+ int actualTallness; -+ __u32 lastChunk; -+ __u32 x; -+ __u32 i; -+ yaffs_dev_t *dev; -+ yaffs_ext_tags tags; -+ yaffs_tnode_t *tn; -+ __u32 obj_id; -+ -+ if (!obj) -+ return; -+ -+ if (yaffs_skip_verification(obj->my_dev)) -+ return; -+ -+ dev = obj->my_dev; -+ obj_id = obj->obj_id; -+ -+ /* Check file size is consistent with tnode depth */ -+ lastChunk = obj->variant.file_variant.file_size / dev->data_bytes_per_chunk + 1; -+ x = lastChunk >> YAFFS_TNODES_LEVEL0_BITS; -+ requiredTallness = 0; -+ while (x > 0) { -+ x >>= YAFFS_TNODES_INTERNAL_BITS; -+ requiredTallness++; -+ } -+ -+ actualTallness = obj->variant.file_variant.top_level; -+ -+ /* Check that the chunks in the tnode tree are all correct. -+ * We do this by scanning through the tnode tree and -+ * checking the tags for every chunk match. -+ */ -+ -+ if (yaffs_skip_nand_verification(dev)) -+ return; -+ -+ for (i = 1; i <= lastChunk; i++) { -+ tn = yaffs_find_tnode_0(dev, &obj->variant.file_variant, i); -+ -+ if (tn) { -+ __u32 theChunk = yaffs_get_group_base(dev, tn, i); -+ if (theChunk > 0) { -+ /* T(~0,(TSTR("verifying (%d:%d) %d"TENDSTR),obj_id,i,theChunk)); */ -+ yaffs_rd_chunk_tags_nand(dev, theChunk, NULL, &tags); -+ if (tags.obj_id != obj_id || tags.chunk_id != i) { -+ T(~0, (TSTR("Object %d chunk_id %d NAND mismatch chunk %d tags (%d:%d)"TENDSTR), -+ obj_id, i, theChunk, -+ tags.obj_id, tags.chunk_id)); -+ } -+ } -+ } -+ } -+} -+ -+ -+void yaffs_verify_link(yaffs_obj_t *obj) -+{ -+ if (obj && yaffs_skip_verification(obj->my_dev)) -+ return; -+ -+ /* Verify sane equivalent object */ -+} -+ -+void yaffs_verify_symlink(yaffs_obj_t *obj) -+{ -+ if (obj && yaffs_skip_verification(obj->my_dev)) -+ return; -+ -+ /* Verify symlink string */ -+} -+ -+void yaffs_verify_special(yaffs_obj_t *obj) -+{ -+ if (obj && yaffs_skip_verification(obj->my_dev)) -+ return; -+} -+ -+void yaffs_verify_obj(yaffs_obj_t *obj) -+{ -+ yaffs_dev_t *dev; -+ -+ __u32 chunkMin; -+ __u32 chunkMax; -+ -+ __u32 chunk_idOk; -+ __u32 chunkInRange; -+ __u32 chunkShouldNotBeDeleted; -+ __u32 chunkValid; -+ -+ if (!obj) -+ return; -+ -+ if (obj->being_created) -+ return; -+ -+ dev = obj->my_dev; -+ -+ if (yaffs_skip_verification(dev)) -+ return; -+ -+ /* Check sane object header chunk */ -+ -+ chunkMin = dev->internal_start_block * dev->param.chunks_per_block; -+ chunkMax = (dev->internal_end_block+1) * dev->param.chunks_per_block - 1; -+ -+ chunkInRange = (((unsigned)(obj->hdr_chunk)) >= chunkMin && ((unsigned)(obj->hdr_chunk)) <= chunkMax); -+ chunk_idOk = chunkInRange || (obj->hdr_chunk == 0); -+ chunkValid = chunkInRange && -+ yaffs_check_chunk_bit(dev, -+ obj->hdr_chunk / dev->param.chunks_per_block, -+ obj->hdr_chunk % dev->param.chunks_per_block); -+ chunkShouldNotBeDeleted = chunkInRange && !chunkValid; -+ -+ if (!obj->fake && -+ (!chunk_idOk || chunkShouldNotBeDeleted)) { -+ T(YAFFS_TRACE_VERIFY, -+ (TSTR("Obj %d has chunk_id %d %s %s"TENDSTR), -+ obj->obj_id, obj->hdr_chunk, -+ chunk_idOk ? "" : ",out of range", -+ chunkShouldNotBeDeleted ? ",marked as deleted" : "")); -+ } -+ -+ if (chunkValid && !yaffs_skip_nand_verification(dev)) { -+ yaffs_ext_tags tags; -+ yaffs_obj_header *oh; -+ __u8 *buffer = yaffs_get_temp_buffer(dev, __LINE__); -+ -+ oh = (yaffs_obj_header *)buffer; -+ -+ yaffs_rd_chunk_tags_nand(dev, obj->hdr_chunk, buffer, -+ &tags); -+ -+ yaffs_verify_oh(obj, oh, &tags, 1); -+ -+ yaffs_release_temp_buffer(dev, buffer, __LINE__); -+ } -+ -+ /* Verify it has a parent */ -+ if (obj && !obj->fake && -+ (!obj->parent || obj->parent->my_dev != dev)) { -+ T(YAFFS_TRACE_VERIFY, -+ (TSTR("Obj %d has parent pointer %p which does not look like an object"TENDSTR), -+ obj->obj_id, obj->parent)); -+ } -+ -+ /* Verify parent is a directory */ -+ if (obj->parent && obj->parent->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) { -+ T(YAFFS_TRACE_VERIFY, -+ (TSTR("Obj %d's parent is not a directory (type %d)"TENDSTR), -+ obj->obj_id, obj->parent->variant_type)); -+ } -+ -+ switch (obj->variant_type) { -+ case YAFFS_OBJECT_TYPE_FILE: -+ yaffs_verify_file(obj); -+ break; -+ case YAFFS_OBJECT_TYPE_SYMLINK: -+ yaffs_verify_symlink(obj); -+ break; -+ case YAFFS_OBJECT_TYPE_DIRECTORY: -+ yaffs_verify_dir(obj); -+ break; -+ case YAFFS_OBJECT_TYPE_HARDLINK: -+ yaffs_verify_link(obj); -+ break; -+ case YAFFS_OBJECT_TYPE_SPECIAL: -+ yaffs_verify_special(obj); -+ break; -+ case YAFFS_OBJECT_TYPE_UNKNOWN: -+ default: -+ T(YAFFS_TRACE_VERIFY, -+ (TSTR("Obj %d has illegaltype %d"TENDSTR), -+ obj->obj_id, obj->variant_type)); -+ break; -+ } -+} -+ -+void yaffs_verify_objects(yaffs_dev_t *dev) -+{ -+ yaffs_obj_t *obj; -+ int i; -+ struct ylist_head *lh; -+ -+ if (yaffs_skip_verification(dev)) -+ return; -+ -+ /* Iterate through the objects in each hash entry */ -+ -+ for (i = 0; i < YAFFS_NOBJECT_BUCKETS; i++) { -+ ylist_for_each(lh, &dev->obj_bucket[i].list) { -+ if (lh) { -+ obj = ylist_entry(lh, yaffs_obj_t, hash_link); -+ yaffs_verify_obj(obj); -+ } -+ } -+ } -+} -+ -+ -+void yaffs_verify_obj_in_dir(yaffs_obj_t *obj) -+{ -+ struct ylist_head *lh; -+ yaffs_obj_t *listObj; -+ -+ int count = 0; -+ -+ if (!obj) { -+ T(YAFFS_TRACE_ALWAYS, (TSTR("No object to verify" TENDSTR))); -+ YBUG(); -+ return; -+ } -+ -+ if (yaffs_skip_verification(obj->my_dev)) -+ return; -+ -+ if (!obj->parent) { -+ T(YAFFS_TRACE_ALWAYS, (TSTR("Object does not have parent" TENDSTR))); -+ YBUG(); -+ return; -+ } -+ -+ if (obj->parent->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) { -+ T(YAFFS_TRACE_ALWAYS, (TSTR("Parent is not directory" TENDSTR))); -+ YBUG(); -+ } -+ -+ /* Iterate through the objects in each hash entry */ -+ -+ ylist_for_each(lh, &obj->parent->variant.dir_variant.children) { -+ if (lh) { -+ listObj = ylist_entry(lh, yaffs_obj_t, siblings); -+ yaffs_verify_obj(listObj); -+ if (obj == listObj) -+ count++; -+ } -+ } -+ -+ if (count != 1) { -+ T(YAFFS_TRACE_ALWAYS, (TSTR("Object in directory %d times" TENDSTR), count)); -+ YBUG(); -+ } -+} -+ -+void yaffs_verify_dir(yaffs_obj_t *directory) -+{ -+ struct ylist_head *lh; -+ yaffs_obj_t *listObj; -+ -+ if (!directory) { -+ YBUG(); -+ return; -+ } -+ -+ if (yaffs_skip_full_verification(directory->my_dev)) -+ return; -+ -+ if (directory->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) { -+ T(YAFFS_TRACE_ALWAYS, (TSTR("Directory has wrong type: %d" TENDSTR), directory->variant_type)); -+ YBUG(); -+ } -+ -+ /* Iterate through the objects in each hash entry */ -+ -+ ylist_for_each(lh, &directory->variant.dir_variant.children) { -+ if (lh) { -+ listObj = ylist_entry(lh, yaffs_obj_t, siblings); -+ if (listObj->parent != directory) { -+ T(YAFFS_TRACE_ALWAYS, (TSTR("Object in directory list has wrong parent %p" TENDSTR), listObj->parent)); -+ YBUG(); -+ } -+ yaffs_verify_obj_in_dir(listObj); -+ } -+ } -+} -+ -+static int yaffs_free_verification_failures; -+ -+void yaffs_verify_free_chunks(yaffs_dev_t *dev) -+{ -+ int counted; -+ int difference; -+ -+ if (yaffs_skip_verification(dev)) -+ return; -+ -+ counted = yaffs_count_free_chunks(dev); -+ -+ difference = dev->n_free_chunks - counted; -+ -+ if (difference) { -+ T(YAFFS_TRACE_ALWAYS, -+ (TSTR("Freechunks verification failure %d %d %d" TENDSTR), -+ dev->n_free_chunks, counted, difference)); -+ yaffs_free_verification_failures++; -+ } -+} -+ -+int yaffs_verify_file_sane(yaffs_obj_t *in) -+{ -+#if 0 -+ int chunk; -+ int n_chunks; -+ int fSize; -+ int failed = 0; -+ int obj_id; -+ yaffs_tnode_t *tn; -+ yaffs_tags_t localTags; -+ yaffs_tags_t *tags = &localTags; -+ int theChunk; -+ int is_deleted; -+ -+ if (in->variant_type != YAFFS_OBJECT_TYPE_FILE) -+ return YAFFS_FAIL; -+ -+ obj_id = in->obj_id; -+ fSize = in->variant.file_variant.file_size; -+ n_chunks = -+ (fSize + in->my_dev->data_bytes_per_chunk - 1) / in->my_dev->data_bytes_per_chunk; -+ -+ for (chunk = 1; chunk <= n_chunks; chunk++) { -+ tn = yaffs_find_tnode_0(in->my_dev, &in->variant.file_variant, -+ chunk); -+ -+ if (tn) { -+ -+ theChunk = yaffs_get_group_base(dev, tn, chunk); -+ -+ if (yaffs_check_chunk_bits -+ (dev, theChunk / dev->param.chunks_per_block, -+ theChunk % dev->param.chunks_per_block)) { -+ -+ yaffs_rd_chunk_tags_nand(in->my_dev, theChunk, -+ tags, -+ &is_deleted); -+ if (yaffs_tags_match -+ (tags, in->obj_id, chunk, is_deleted)) { -+ /* found it; */ -+ -+ } -+ } else { -+ -+ failed = 1; -+ } -+ -+ } else { -+ /* T(("No level 0 found for %d\n", chunk)); */ -+ } -+ } -+ -+ return failed ? YAFFS_FAIL : YAFFS_OK; -+#else -+ in=in; -+ return YAFFS_OK; -+#endif -+} ---- /dev/null -+++ b/fs/yaffs2/yaffs_verify.h -@@ -0,0 +1,39 @@ -+/* -+ * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. -+ * -+ * Copyright (C) 2002-2010 Aleph One Ltd. -+ * for Toby Churchill Ltd and Brightstar Engineering -+ * -+ * Created by Charles Manning <charles@aleph1.co.uk> -+ * -+ * This program is free software; you can redistribute it and/or modify -+ * it under the terms of the GNU General Public License version 2 as -+ * published by the Free Software Foundation. -+ */ -+ -+#ifndef __YAFFS_VERIFY_H__ -+#define __YAFFS_VERIFY_H__ -+ -+#include "yaffs_guts.h" -+ -+void yaffs_verify_blk(yaffs_dev_t *dev, yaffs_block_info_t *bi, int n); -+void yaffs_verify_collected_blk(yaffs_dev_t *dev, yaffs_block_info_t *bi, int n); -+void yaffs_verify_blocks(yaffs_dev_t *dev); -+ -+void yaffs_verify_oh(yaffs_obj_t *obj, yaffs_obj_header *oh, yaffs_ext_tags *tags, int parentCheck); -+void yaffs_verify_file(yaffs_obj_t *obj); -+void yaffs_verify_link(yaffs_obj_t *obj); -+void yaffs_verify_symlink(yaffs_obj_t *obj); -+void yaffs_verify_special(yaffs_obj_t *obj); -+void yaffs_verify_obj(yaffs_obj_t *obj); -+void yaffs_verify_objects(yaffs_dev_t *dev); -+void yaffs_verify_obj_in_dir(yaffs_obj_t *obj); -+void yaffs_verify_dir(yaffs_obj_t *directory); -+void yaffs_verify_free_chunks(yaffs_dev_t *dev); -+ -+int yaffs_verify_file_sane(yaffs_obj_t *obj); -+ -+int yaffs_skip_verification(yaffs_dev_t *dev); -+ -+#endif -+ ---- /dev/null -+++ b/fs/yaffs2/yaffs_vfs_glue.c -@@ -0,0 +1,3576 @@ -+/* -+ * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. -+ * -+ * Copyright (C) 2002-2010 Aleph One Ltd. -+ * for Toby Churchill Ltd and Brightstar Engineering -+ * -+ * Created by Charles Manning <charles@aleph1.co.uk> -+ * Acknowledgements: -+ * Luc van OostenRyck for numerous patches. -+ * Nick Bane for numerous patches. -+ * Nick Bane for 2.5/2.6 integration. -+ * Andras Toth for mknod rdev issue. -+ * Michael Fischer for finding the problem with inode inconsistency. -+ * Some code bodily lifted from JFFS -+ * -+ * This program is free software; you can redistribute it and/or modify -+ * it under the terms of the GNU General Public License version 2 as -+ * published by the Free Software Foundation. -+ */ -+ -+/* -+ * -+ * This is the file system front-end to YAFFS that hooks it up to -+ * the VFS. -+ * -+ * Special notes: -+ * >> 2.4: sb->u.generic_sbp points to the yaffs_dev_t associated with -+ * this superblock -+ * >> 2.6: sb->s_fs_info points to the yaffs_dev_t associated with this -+ * superblock -+ * >> inode->u.generic_ip points to the associated yaffs_obj_t. -+ */ -+ -+/* -+ * There are two variants of the VFS glue code. This variant should compile -+ * for any version of Linux. -+ */ -+#include <linux/version.h> -+ -+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 10)) -+#define YAFFS_COMPILE_BACKGROUND -+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6, 23)) -+#define YAFFS_COMPILE_FREEZER -+#endif -+#endif -+ -+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,28)) -+#define YAFFS_COMPILE_EXPORTFS -+#endif -+ -+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,35)) -+#define YAFFS_USE_SETATTR_COPY -+#define YAFFS_USE_TRUNCATE_SETSIZE -+#endif -+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,35)) -+#define YAFFS_HAS_EVICT_INODE -+#endif -+ -+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,13)) -+#define YAFFS_NEW_FOLLOW_LINK 1 -+#else -+#define YAFFS_NEW_FOLLOW_LINK 0 -+#endif -+ -+#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 19)) -+#include <linux/config.h> -+#endif -+ -+#include <linux/kernel.h> -+#include <linux/module.h> -+#include <linux/slab.h> -+#include <linux/init.h> -+#include <linux/fs.h> -+#include <linux/proc_fs.h> -+#include <linux/smp_lock.h> -+#include <linux/pagemap.h> -+#include <linux/mtd/mtd.h> -+#include <linux/interrupt.h> -+#include <linux/string.h> -+#include <linux/ctype.h> -+ -+#if (YAFFS_NEW_FOLLOW_LINK == 1) -+#include <linux/namei.h> -+#endif -+ -+#ifdef YAFFS_COMPILE_EXPORTFS -+#include <linux/exportfs.h> -+#endif -+ -+#ifdef YAFFS_COMPILE_BACKGROUND -+#include <linux/kthread.h> -+#include <linux/delay.h> -+#endif -+#ifdef YAFFS_COMPILE_FREEZER -+#include <linux/freezer.h> -+#endif -+ -+#include <asm/div64.h> -+ -+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) -+ -+#include <linux/statfs.h> -+ -+#define UnlockPage(p) unlock_page(p) -+#define Page_Uptodate(page) test_bit(PG_uptodate, &(page)->flags) -+ -+/* FIXME: use sb->s_id instead ? */ -+#define yaffs_devname(sb, buf) bdevname(sb->s_bdev, buf) -+ -+#else -+ -+#include <linux/locks.h> -+#define BDEVNAME_SIZE 0 -+#define yaffs_devname(sb, buf) kdevname(sb->s_dev) -+ -+#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 5, 0)) -+/* added NCB 26/5/2006 for 2.4.25-vrs2-tcl1 kernel */ -+#define __user -+#endif -+ -+#endif -+ -+#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 26)) -+#define YPROC_ROOT (&proc_root) -+#else -+#define YPROC_ROOT NULL -+#endif -+ -+#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,26)) -+#define Y_INIT_TIMER(a) init_timer(a) -+#else -+#define Y_INIT_TIMER(a) init_timer_on_stack(a) -+#endif -+ -+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) -+#define WRITE_SIZE_STR "writesize" -+#define WRITE_SIZE(mtd) ((mtd)->writesize) -+#else -+#define WRITE_SIZE_STR "oobblock" -+#define WRITE_SIZE(mtd) ((mtd)->oobblock) -+#endif -+ -+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 27)) -+#define YAFFS_USE_WRITE_BEGIN_END 1 -+#else -+#define YAFFS_USE_WRITE_BEGIN_END 0 -+#endif -+ -+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 28)) -+static uint32_t YCALCBLOCKS(uint64_t partition_size, uint32_t block_size) -+{ -+ uint64_t result = partition_size; -+ do_div(result, block_size); -+ return (uint32_t)result; -+} -+#else -+#define YCALCBLOCKS(s, b) ((s)/(b)) -+#endif -+ -+#include <linux/uaccess.h> -+#include <linux/mtd/mtd.h> -+ -+#include "yportenv.h" -+#include "yaffs_trace.h" -+#include "yaffs_guts.h" -+ -+#include "yaffs_linux.h" -+ -+#include "yaffs_mtdif.h" -+#include "yaffs_mtdif1.h" -+#include "yaffs_mtdif2.h" -+ -+unsigned int yaffs_trace_mask = YAFFS_TRACE_BAD_BLOCKS | YAFFS_TRACE_ALWAYS; -+unsigned int yaffs_wr_attempts = YAFFS_WR_ATTEMPTS; -+unsigned int yaffs_auto_checkpoint = 1; -+unsigned int yaffs_gc_control = 1; -+unsigned int yaffs_bg_enable = 1; -+ -+/* Module Parameters */ -+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) -+module_param(yaffs_trace_mask, uint, 0644); -+module_param(yaffs_wr_attempts, uint, 0644); -+module_param(yaffs_auto_checkpoint, uint, 0644); -+module_param(yaffs_gc_control, uint, 0644); -+module_param(yaffs_bg_enable, uint, 0644); -+#else -+MODULE_PARM(yaffs_trace_mask, "i"); -+MODULE_PARM(yaffs_wr_attempts, "i"); -+MODULE_PARM(yaffs_auto_checkpoint, "i"); -+MODULE_PARM(yaffs_gc_control, "i"); -+#endif -+ -+#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 25)) -+/* use iget and read_inode */ -+#define Y_IGET(sb, inum) iget((sb), (inum)) -+static void yaffs_read_inode(struct inode *inode); -+ -+#else -+/* Call local equivalent */ -+#define YAFFS_USE_OWN_IGET -+#define Y_IGET(sb, inum) yaffs_iget((sb), (inum)) -+ -+static struct inode *yaffs_iget(struct super_block *sb, unsigned long ino); -+#endif -+ -+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 18)) -+#define yaffs_InodeToObjectLV(iptr) ((iptr)->i_private) -+#else -+#define yaffs_InodeToObjectLV(iptr) ((iptr)->u.generic_ip) -+#endif -+ -+#define yaffs_InodeToObject(iptr) ((yaffs_obj_t *)(yaffs_InodeToObjectLV(iptr))) -+#define yaffs_dentry_to_obj(dptr) yaffs_InodeToObject((dptr)->d_inode) -+ -+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) -+#define yaffs_SuperToDevice(sb) ((yaffs_dev_t *)sb->s_fs_info) -+#else -+#define yaffs_SuperToDevice(sb) ((yaffs_dev_t *)sb->u.generic_sbp) -+#endif -+ -+ -+#define update_dir_time(dir) do {\ -+ (dir)->i_ctime = (dir)->i_mtime = CURRENT_TIME; \ -+ } while(0) -+ -+static void yaffs_put_super(struct super_block *sb); -+ -+static ssize_t yaffs_file_write(struct file *f, const char *buf, size_t n, -+ loff_t *pos); -+static ssize_t yaffs_hold_space(struct file *f); -+static void yaffs_release_space(struct file *f); -+ -+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) -+static int yaffs_file_flush(struct file *file, fl_owner_t id); -+#else -+static int yaffs_file_flush(struct file *file); -+#endif -+ -+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 34)) -+static int yaffs_sync_object(struct file *file, int datasync); -+#else -+static int yaffs_sync_object(struct file *file, struct dentry *dentry, -+ int datasync); -+#endif -+ -+static int yaffs_readdir(struct file *f, void *dirent, filldir_t filldir); -+ -+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) -+static int yaffs_create(struct inode *dir, struct dentry *dentry, int mode, -+ struct nameidata *n); -+static struct dentry *yaffs_lookup(struct inode *dir, struct dentry *dentry, -+ struct nameidata *n); -+#else -+static int yaffs_create(struct inode *dir, struct dentry *dentry, int mode); -+static struct dentry *yaffs_lookup(struct inode *dir, struct dentry *dentry); -+#endif -+static int yaffs_link(struct dentry *old_dentry, struct inode *dir, -+ struct dentry *dentry); -+static int yaffs_unlink(struct inode *dir, struct dentry *dentry); -+static int yaffs_symlink(struct inode *dir, struct dentry *dentry, -+ const char *symname); -+static int yaffs_mkdir(struct inode *dir, struct dentry *dentry, int mode); -+ -+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) -+static int yaffs_mknod(struct inode *dir, struct dentry *dentry, int mode, -+ dev_t dev); -+#else -+static int yaffs_mknod(struct inode *dir, struct dentry *dentry, int mode, -+ int dev); -+#endif -+static int yaffs_rename(struct inode *old_dir, struct dentry *old_dentry, -+ struct inode *new_dir, struct dentry *new_dentry); -+static int yaffs_setattr(struct dentry *dentry, struct iattr *attr); -+ -+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) -+static int yaffs_sync_fs(struct super_block *sb, int wait); -+static void yaffs_write_super(struct super_block *sb); -+#else -+static int yaffs_sync_fs(struct super_block *sb); -+static int yaffs_write_super(struct super_block *sb); -+#endif -+ -+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) -+static int yaffs_statfs(struct dentry *dentry, struct kstatfs *buf); -+#elif (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) -+static int yaffs_statfs(struct super_block *sb, struct kstatfs *buf); -+#else -+static int yaffs_statfs(struct super_block *sb, struct statfs *buf); -+#endif -+ -+#ifdef YAFFS_HAS_PUT_INODE -+static void yaffs_put_inode(struct inode *inode); -+#endif -+ -+#ifdef YAFFS_HAS_EVICT_INODE -+static void yaffs_evict_inode(struct inode *); -+#else -+static void yaffs_delete_inode(struct inode *); -+static void yaffs_clear_inode(struct inode *); -+#endif -+ -+static int yaffs_readpage(struct file *file, struct page *page); -+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) -+static int yaffs_writepage(struct page *page, struct writeback_control *wbc); -+#else -+static int yaffs_writepage(struct page *page); -+#endif -+ -+#ifdef CONFIG_YAFFS_XATTR -+int yaffs_setxattr(struct dentry *dentry, const char *name, -+ const void *value, size_t size, int flags); -+ssize_t yaffs_getxattr(struct dentry *dentry, const char *name, void *buff, -+ size_t size); -+int yaffs_removexattr(struct dentry *dentry, const char *name); -+ssize_t yaffs_listxattr(struct dentry *dentry, char *buff, size_t size); -+#endif -+ -+ -+#if (YAFFS_USE_WRITE_BEGIN_END != 0) -+static int yaffs_write_begin(struct file *filp, struct address_space *mapping, -+ loff_t pos, unsigned len, unsigned flags, -+ struct page **pagep, void **fsdata); -+static int yaffs_write_end(struct file *filp, struct address_space *mapping, -+ loff_t pos, unsigned len, unsigned copied, -+ struct page *pg, void *fsdadata); -+#else -+static int yaffs_prepare_write(struct file *f, struct page *pg, -+ unsigned offset, unsigned to); -+static int yaffs_commit_write(struct file *f, struct page *pg, unsigned offset, -+ unsigned to); -+ -+#endif -+ -+static int yaffs_readlink(struct dentry *dentry, char __user *buffer, -+ int buflen); -+#if (YAFFS_NEW_FOLLOW_LINK == 1) -+void yaffs_put_link(struct dentry *dentry, struct nameidata *nd, void *alias); -+static void *yaffs_follow_link(struct dentry *dentry, struct nameidata *nd); -+#else -+static int yaffs_follow_link(struct dentry *dentry, struct nameidata *nd); -+#endif -+ -+static void yaffs_touch_super(yaffs_dev_t *dev); -+ -+static loff_t yaffs_dir_llseek(struct file *file, loff_t offset, int origin); -+ -+static int yaffs_vfs_setattr(struct inode *, struct iattr *); -+ -+ -+static struct address_space_operations yaffs_file_address_operations = { -+ .readpage = yaffs_readpage, -+ .writepage = yaffs_writepage, -+#if (YAFFS_USE_WRITE_BEGIN_END > 0) -+ .write_begin = yaffs_write_begin, -+ .write_end = yaffs_write_end, -+#else -+ .prepare_write = yaffs_prepare_write, -+ .commit_write = yaffs_commit_write, -+#endif -+}; -+ -+ -+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 22)) -+static const struct file_operations yaffs_file_operations = { -+ .read = do_sync_read, -+ .write = do_sync_write, -+ .aio_read = generic_file_aio_read, -+ .aio_write = generic_file_aio_write, -+ .mmap = generic_file_mmap, -+ .flush = yaffs_file_flush, -+ .fsync = yaffs_sync_object, -+ .splice_read = generic_file_splice_read, -+ .splice_write = generic_file_splice_write, -+ .llseek = generic_file_llseek, -+}; -+ -+#elif (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 18)) -+ -+static const struct file_operations yaffs_file_operations = { -+ .read = do_sync_read, -+ .write = do_sync_write, -+ .aio_read = generic_file_aio_read, -+ .aio_write = generic_file_aio_write, -+ .mmap = generic_file_mmap, -+ .flush = yaffs_file_flush, -+ .fsync = yaffs_sync_object, -+ .sendfile = generic_file_sendfile, -+}; -+ -+#else -+ -+static const struct file_operations yaffs_file_operations = { -+ .read = generic_file_read, -+ .write = generic_file_write, -+ .mmap = generic_file_mmap, -+ .flush = yaffs_file_flush, -+ .fsync = yaffs_sync_object, -+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) -+ .sendfile = generic_file_sendfile, -+#endif -+}; -+#endif -+ -+#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,25)) -+static void zero_user_segment(struct page *page, unsigned start, unsigned end) -+{ -+ void * kaddr = kmap_atomic(page, KM_USER0); -+ memset(kaddr + start, 0, end - start); -+ kunmap_atomic(kaddr, KM_USER0); -+ flush_dcache_page(page); -+} -+#endif -+ -+ -+static const struct inode_operations yaffs_file_inode_operations = { -+ .setattr = yaffs_setattr, -+#ifdef CONFIG_YAFFS_XATTR -+ .setxattr = yaffs_setxattr, -+ .getxattr = yaffs_getxattr, -+ .listxattr = yaffs_listxattr, -+ .removexattr = yaffs_removexattr, -+#endif -+}; -+ -+static const struct inode_operations yaffs_symlink_inode_operations = { -+ .readlink = yaffs_readlink, -+ .follow_link = yaffs_follow_link, -+#if (YAFFS_NEW_FOLLOW_LINK == 1) -+ .put_link = yaffs_put_link, -+#endif -+ .setattr = yaffs_setattr, -+#ifdef CONFIG_YAFFS_XATTR -+ .setxattr = yaffs_setxattr, -+ .getxattr = yaffs_getxattr, -+ .listxattr = yaffs_listxattr, -+ .removexattr = yaffs_removexattr, -+#endif -+}; -+ -+static const struct inode_operations yaffs_dir_inode_operations = { -+ .create = yaffs_create, -+ .lookup = yaffs_lookup, -+ .link = yaffs_link, -+ .unlink = yaffs_unlink, -+ .symlink = yaffs_symlink, -+ .mkdir = yaffs_mkdir, -+ .rmdir = yaffs_unlink, -+ .mknod = yaffs_mknod, -+ .rename = yaffs_rename, -+ .setattr = yaffs_setattr, -+#ifdef CONFIG_YAFFS_XATTR -+ .setxattr = yaffs_setxattr, -+ .getxattr = yaffs_getxattr, -+ .listxattr = yaffs_listxattr, -+ .removexattr = yaffs_removexattr, -+#endif -+}; -+ -+static const struct file_operations yaffs_dir_operations = { -+ .read = generic_read_dir, -+ .readdir = yaffs_readdir, -+ .fsync = yaffs_sync_object, -+ .llseek = yaffs_dir_llseek, -+}; -+ -+static const struct super_operations yaffs_super_ops = { -+ .statfs = yaffs_statfs, -+ -+#ifndef YAFFS_USE_OWN_IGET -+ .read_inode = yaffs_read_inode, -+#endif -+#ifdef YAFFS_HAS_PUT_INODE -+ .put_inode = yaffs_put_inode, -+#endif -+ .put_super = yaffs_put_super, -+#ifdef YAFFS_HAS_EVICT_INODE -+ .evict_inode = yaffs_evict_inode, -+#else -+ .delete_inode = yaffs_delete_inode, -+ .clear_inode = yaffs_clear_inode, -+#endif -+ .sync_fs = yaffs_sync_fs, -+ .write_super = yaffs_write_super, -+}; -+ -+ -+static int yaffs_vfs_setattr(struct inode *inode, struct iattr *attr) -+{ -+#ifdef YAFFS_USE_SETATTR_COPY -+ setattr_copy(inode,attr); -+ return 0; -+#else -+ return inode_setattr(inode, attr); -+#endif -+ -+} -+ -+static int yaffs_vfs_setsize(struct inode *inode, loff_t newsize) -+{ -+#ifdef YAFFS_USE_TRUNCATE_SETSIZE -+ truncate_setsize(inode,newsize); -+ return 0; -+#else -+ truncate_inode_pages(&inode->i_data,newsize); -+ return 0; -+#endif -+ -+} -+ -+static unsigned yaffs_gc_control_callback(yaffs_dev_t *dev) -+{ -+ return yaffs_gc_control; -+} -+ -+static void yaffs_gross_lock(yaffs_dev_t *dev) -+{ -+ T(YAFFS_TRACE_LOCK, (TSTR("yaffs locking %p\n"), current)); -+ down(&(yaffs_dev_to_lc(dev)->grossLock)); -+ T(YAFFS_TRACE_LOCK, (TSTR("yaffs locked %p\n"), current)); -+} -+ -+static void yaffs_gross_unlock(yaffs_dev_t *dev) -+{ -+ T(YAFFS_TRACE_LOCK, (TSTR("yaffs unlocking %p\n"), current)); -+ up(&(yaffs_dev_to_lc(dev)->grossLock)); -+} -+ -+#ifdef YAFFS_COMPILE_EXPORTFS -+ -+static struct inode * -+yaffs2_nfs_get_inode(struct super_block *sb, uint64_t ino, uint32_t generation) -+{ -+ return Y_IGET(sb, ino); -+} -+ -+static struct dentry * -+yaffs2_fh_to_dentry(struct super_block *sb, struct fid *fid, int fh_len, int fh_type) -+{ -+ return generic_fh_to_dentry(sb, fid, fh_len, fh_type, yaffs2_nfs_get_inode) ; -+} -+ -+static struct dentry * -+ yaffs2_fh_to_parent(struct super_block *sb, struct fid *fid, int fh_len, int fh_type) -+{ -+ return generic_fh_to_parent(sb, fid, fh_len, fh_type, yaffs2_nfs_get_inode); -+} -+ -+struct dentry *yaffs2_get_parent(struct dentry *dentry) -+{ -+ -+ struct super_block *sb = dentry->d_inode->i_sb; -+ struct dentry *parent = ERR_PTR(-ENOENT); -+ struct inode *inode; -+ unsigned long parent_ino; -+ yaffs_obj_t *d_obj; -+ yaffs_obj_t *parent_obj; -+ -+ d_obj = yaffs_InodeToObject(dentry->d_inode); -+ -+ if (d_obj) { -+ parent_obj = d_obj->parent; -+ if (parent_obj) { -+ parent_ino = yaffs_get_obj_inode(parent_obj); -+ inode = Y_IGET(sb, parent_ino); -+ -+ if (IS_ERR(inode)) { -+ parent = ERR_CAST(inode); -+ } else { -+ parent = d_obtain_alias(inode); -+ if (!IS_ERR(parent)) { -+ parent = ERR_PTR(-ENOMEM); -+ iput(inode); -+ } -+ } -+ } -+ } -+ -+ return parent; -+} -+ -+/* Just declare a zero structure as a NULL value implies -+ * using the default functions of exportfs. -+ */ -+ -+static struct export_operations yaffs_export_ops = -+{ -+ .fh_to_dentry = yaffs2_fh_to_dentry, -+ .fh_to_parent = yaffs2_fh_to_parent, -+ .get_parent = yaffs2_get_parent, -+} ; -+ -+#endif -+ -+/*-----------------------------------------------------------------*/ -+/* Directory search context allows us to unlock access to yaffs during -+ * filldir without causing problems with the directory being modified. -+ * This is similar to the tried and tested mechanism used in yaffs direct. -+ * -+ * A search context iterates along a doubly linked list of siblings in the -+ * directory. If the iterating object is deleted then this would corrupt -+ * the list iteration, likely causing a crash. The search context avoids -+ * this by using the remove_obj_fn to move the search context to the -+ * next object before the object is deleted. -+ * -+ * Many readdirs (and thus seach conexts) may be alive simulateously so -+ * each yaffs_dev_t has a list of these. -+ * -+ * A seach context lives for the duration of a readdir. -+ * -+ * All these functions must be called while yaffs is locked. -+ */ -+ -+struct yaffs_SearchContext { -+ yaffs_dev_t *dev; -+ yaffs_obj_t *dirObj; -+ yaffs_obj_t *nextReturn; -+ struct ylist_head others; -+}; -+ -+/* -+ * yaffs_NewSearch() creates a new search context, initialises it and -+ * adds it to the device's search context list. -+ * -+ * Called at start of readdir. -+ */ -+static struct yaffs_SearchContext * yaffs_NewSearch(yaffs_obj_t *dir) -+{ -+ yaffs_dev_t *dev = dir->my_dev; -+ struct yaffs_SearchContext *sc = YMALLOC(sizeof(struct yaffs_SearchContext)); -+ if(sc){ -+ sc->dirObj = dir; -+ sc->dev = dev; -+ if( ylist_empty(&sc->dirObj->variant.dir_variant.children)) -+ sc->nextReturn = NULL; -+ else -+ sc->nextReturn = ylist_entry( -+ dir->variant.dir_variant.children.next, -+ yaffs_obj_t,siblings); -+ YINIT_LIST_HEAD(&sc->others); -+ ylist_add(&sc->others,&(yaffs_dev_to_lc(dev)->searchContexts)); -+ } -+ return sc; -+} -+ -+/* -+ * yaffs_search_end() disposes of a search context and cleans up. -+ */ -+static void yaffs_search_end(struct yaffs_SearchContext * sc) -+{ -+ if(sc){ -+ ylist_del(&sc->others); -+ YFREE(sc); -+ } -+} -+ -+/* -+ * yaffs_search_advance() moves a search context to the next object. -+ * Called when the search iterates or when an object removal causes -+ * the search context to be moved to the next object. -+ */ -+static void yaffs_search_advance(struct yaffs_SearchContext *sc) -+{ -+ if(!sc) -+ return; -+ -+ if( sc->nextReturn == NULL || -+ ylist_empty(&sc->dirObj->variant.dir_variant.children)) -+ sc->nextReturn = NULL; -+ else { -+ struct ylist_head *next = sc->nextReturn->siblings.next; -+ -+ if( next == &sc->dirObj->variant.dir_variant.children) -+ sc->nextReturn = NULL; /* end of list */ -+ else -+ sc->nextReturn = ylist_entry(next,yaffs_obj_t,siblings); -+ } -+} -+ -+/* -+ * yaffs_remove_obj_callback() is called when an object is unlinked. -+ * We check open search contexts and advance any which are currently -+ * on the object being iterated. -+ */ -+static void yaffs_remove_obj_callback(yaffs_obj_t *obj) -+{ -+ -+ struct ylist_head *i; -+ struct yaffs_SearchContext *sc; -+ struct ylist_head *search_contexts = &(yaffs_dev_to_lc(obj->my_dev)->searchContexts); -+ -+ -+ /* Iterate through the directory search contexts. -+ * If any are currently on the object being removed, then advance -+ * the search context to the next object to prevent a hanging pointer. -+ */ -+ ylist_for_each(i, search_contexts) { -+ if (i) { -+ sc = ylist_entry(i, struct yaffs_SearchContext,others); -+ if(sc->nextReturn == obj) -+ yaffs_search_advance(sc); -+ } -+ } -+ -+} -+ -+ -+/*-----------------------------------------------------------------*/ -+ -+static int yaffs_readlink(struct dentry *dentry, char __user *buffer, -+ int buflen) -+{ -+ unsigned char *alias; -+ int ret; -+ -+ yaffs_dev_t *dev = yaffs_dentry_to_obj(dentry)->my_dev; -+ -+ yaffs_gross_lock(dev); -+ -+ alias = yaffs_get_symlink_alias(yaffs_dentry_to_obj(dentry)); -+ -+ yaffs_gross_unlock(dev); -+ -+ if (!alias) -+ return -ENOMEM; -+ -+ ret = vfs_readlink(dentry, buffer, buflen, alias); -+ kfree(alias); -+ return ret; -+} -+ -+#if (YAFFS_NEW_FOLLOW_LINK == 1) -+static void *yaffs_follow_link(struct dentry *dentry, struct nameidata *nd) -+#else -+static int yaffs_follow_link(struct dentry *dentry, struct nameidata *nd) -+#endif -+{ -+ unsigned char *alias; -+ int ret; -+ yaffs_dev_t *dev = yaffs_dentry_to_obj(dentry)->my_dev; -+ -+ yaffs_gross_lock(dev); -+ -+ alias = yaffs_get_symlink_alias(yaffs_dentry_to_obj(dentry)); -+ yaffs_gross_unlock(dev); -+ -+ if (!alias) { -+ ret = -ENOMEM; -+ goto out; -+ } -+ -+#if (YAFFS_NEW_FOLLOW_LINK == 1) -+ nd_set_link(nd, alias); -+ ret = (int)alias; -+out: -+ return ERR_PTR(ret); -+#else -+ ret = vfs_follow_link(nd, alias); -+ kfree(alias); -+out: -+ return ret; -+#endif -+} -+ -+#if (YAFFS_NEW_FOLLOW_LINK == 1) -+void yaffs_put_link(struct dentry *dentry, struct nameidata *nd, void *alias) { -+ kfree(alias); -+} -+#endif -+ -+struct inode *yaffs_get_inode(struct super_block *sb, int mode, int dev, -+ yaffs_obj_t *obj); -+ -+/* -+ * Lookup is used to find objects in the fs -+ */ -+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) -+ -+static struct dentry *yaffs_lookup(struct inode *dir, struct dentry *dentry, -+ struct nameidata *n) -+#else -+static struct dentry *yaffs_lookup(struct inode *dir, struct dentry *dentry) -+#endif -+{ -+ yaffs_obj_t *obj; -+ struct inode *inode = NULL; /* NCB 2.5/2.6 needs NULL here */ -+ -+ yaffs_dev_t *dev = yaffs_InodeToObject(dir)->my_dev; -+ -+ if(current != yaffs_dev_to_lc(dev)->readdirProcess) -+ yaffs_gross_lock(dev); -+ -+ T(YAFFS_TRACE_OS, -+ (TSTR("yaffs_lookup for %d:%s\n"), -+ yaffs_InodeToObject(dir)->obj_id, dentry->d_name.name)); -+ -+ obj = yaffs_find_by_name(yaffs_InodeToObject(dir), -+ dentry->d_name.name); -+ -+ obj = yaffs_get_equivalent_obj(obj); /* in case it was a hardlink */ -+ -+ /* Can't hold gross lock when calling yaffs_get_inode() */ -+ if(current != yaffs_dev_to_lc(dev)->readdirProcess) -+ yaffs_gross_unlock(dev); -+ -+ if (obj) { -+ T(YAFFS_TRACE_OS, -+ (TSTR("yaffs_lookup found %d\n"), obj->obj_id)); -+ -+ inode = yaffs_get_inode(dir->i_sb, obj->yst_mode, 0, obj); -+ -+ if (inode) { -+ T(YAFFS_TRACE_OS, -+ (TSTR("yaffs_loookup dentry \n"))); -+/* #if 0 asserted by NCB for 2.5/6 compatability - falls through to -+ * d_add even if NULL inode */ -+#if 0 -+ /*dget(dentry); // try to solve directory bug */ -+ d_add(dentry, inode); -+ -+ /* return dentry; */ -+ return NULL; -+#endif -+ } -+ -+ } else { -+ T(YAFFS_TRACE_OS,(TSTR("yaffs_lookup not found\n"))); -+ -+ } -+ -+/* added NCB for 2.5/6 compatability - forces add even if inode is -+ * NULL which creates dentry hash */ -+ d_add(dentry, inode); -+ -+ return NULL; -+} -+ -+ -+#ifdef YAFFS_HAS_PUT_INODE -+ -+/* For now put inode is just for debugging -+ * Put inode is called when the inode **structure** is put. -+ */ -+static void yaffs_put_inode(struct inode *inode) -+{ -+ T(YAFFS_TRACE_OS, -+ (TSTR("yaffs_put_inode: ino %d, count %d\n"), (int)inode->i_ino, -+ atomic_read(&inode->i_count))); -+ -+} -+#endif -+ -+ -+static void yaffs_unstitch_obj(struct inode *inode, yaffs_obj_t *obj) -+{ -+ /* Clear the association between the inode and -+ * the yaffs_obj_t. -+ */ -+ obj->my_inode = NULL; -+ yaffs_InodeToObjectLV(inode) = NULL; -+ -+ /* If the object freeing was deferred, then the real -+ * free happens now. -+ * This should fix the inode inconsistency problem. -+ */ -+ yaffs_handle_defered_free(obj); -+} -+ -+#ifdef YAFFS_HAS_EVICT_INODE -+/* yaffs_evict_inode combines into one operation what was previously done in -+ * yaffs_clear_inode() and yaffs_delete_inode() -+ * -+ */ -+static void yaffs_evict_inode( struct inode *inode) -+{ -+ yaffs_obj_t *obj; -+ yaffs_dev_t *dev; -+ int deleteme = 0; -+ -+ obj = yaffs_InodeToObject(inode); -+ -+ T(YAFFS_TRACE_OS, -+ (TSTR("yaffs_evict_inode: ino %d, count %d %s\n"), (int)inode->i_ino, -+ atomic_read(&inode->i_count), -+ obj ? "object exists" : "null object")); -+ -+ if (!inode->i_nlink && !is_bad_inode(inode)) -+ deleteme = 1; -+ truncate_inode_pages(&inode->i_data,0); -+ end_writeback(inode); -+ -+ if(deleteme && obj){ -+ dev = obj->my_dev; -+ yaffs_gross_lock(dev); -+ yaffs_del_obj(obj); -+ yaffs_gross_unlock(dev); -+ } -+ if (obj) { -+ dev = obj->my_dev; -+ yaffs_gross_lock(dev); -+ yaffs_unstitch_obj(inode,obj); -+ yaffs_gross_unlock(dev); -+ } -+ -+ -+} -+#else -+ -+/* clear is called to tell the fs to release any per-inode data it holds. -+ * The object might still exist on disk and is just being thrown out of the cache -+ * or else the object has actually been deleted and we're being called via -+ * the chain -+ * yaffs_delete_inode() -> clear_inode()->yaffs_clear_inode() -+ */ -+ -+static void yaffs_clear_inode(struct inode *inode) -+{ -+ yaffs_obj_t *obj; -+ yaffs_dev_t *dev; -+ -+ obj = yaffs_InodeToObject(inode); -+ -+ T(YAFFS_TRACE_OS, -+ (TSTR("yaffs_clear_inode: ino %d, count %d %s\n"), (int)inode->i_ino, -+ atomic_read(&inode->i_count), -+ obj ? "object exists" : "null object")); -+ -+ if (obj) { -+ dev = obj->my_dev; -+ yaffs_gross_lock(dev); -+ yaffs_unstitch_obj(inode,obj); -+ yaffs_gross_unlock(dev); -+ } -+ -+} -+ -+/* delete is called when the link count is zero and the inode -+ * is put (ie. nobody wants to know about it anymore, time to -+ * delete the file). -+ * NB Must call clear_inode() -+ */ -+static void yaffs_delete_inode(struct inode *inode) -+{ -+ yaffs_obj_t *obj = yaffs_InodeToObject(inode); -+ yaffs_dev_t *dev; -+ -+ T(YAFFS_TRACE_OS, -+ (TSTR("yaffs_delete_inode: ino %d, count %d %s\n"), (int)inode->i_ino, -+ atomic_read(&inode->i_count), -+ obj ? "object exists" : "null object")); -+ -+ if (obj) { -+ dev = obj->my_dev; -+ yaffs_gross_lock(dev); -+ yaffs_del_obj(obj); -+ yaffs_gross_unlock(dev); -+ } -+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 13)) -+ truncate_inode_pages(&inode->i_data, 0); -+#endif -+ clear_inode(inode); -+} -+#endif -+ -+ -+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) -+static int yaffs_file_flush(struct file *file, fl_owner_t id) -+#else -+static int yaffs_file_flush(struct file *file) -+#endif -+{ -+ yaffs_obj_t *obj = yaffs_dentry_to_obj(file->f_dentry); -+ -+ yaffs_dev_t *dev = obj->my_dev; -+ -+ T(YAFFS_TRACE_OS, -+ (TSTR("yaffs_file_flush object %d (%s)\n"), obj->obj_id, -+ obj->dirty ? "dirty" : "clean")); -+ -+ yaffs_gross_lock(dev); -+ -+ yaffs_flush_file(obj, 1, 0); -+ -+ yaffs_gross_unlock(dev); -+ -+ return 0; -+} -+ -+static int yaffs_readpage_nolock(struct file *f, struct page *pg) -+{ -+ /* Lifted from jffs2 */ -+ -+ yaffs_obj_t *obj; -+ unsigned char *pg_buf; -+ int ret; -+ -+ yaffs_dev_t *dev; -+ -+ T(YAFFS_TRACE_OS, -+ (TSTR("yaffs_readpage_nolock at %08x, size %08x\n"), -+ (unsigned)(pg->index << PAGE_CACHE_SHIFT), -+ (unsigned)PAGE_CACHE_SIZE)); -+ -+ obj = yaffs_dentry_to_obj(f->f_dentry); -+ -+ dev = obj->my_dev; -+ -+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) -+ BUG_ON(!PageLocked(pg)); -+#else -+ if (!PageLocked(pg)) -+ PAGE_BUG(pg); -+#endif -+ -+ pg_buf = kmap(pg); -+ /* FIXME: Can kmap fail? */ -+ -+ yaffs_gross_lock(dev); -+ -+ ret = yaffs_file_rd(obj, pg_buf, -+ pg->index << PAGE_CACHE_SHIFT, -+ PAGE_CACHE_SIZE); -+ -+ yaffs_gross_unlock(dev); -+ -+ if (ret >= 0) -+ ret = 0; -+ -+ if (ret) { -+ ClearPageUptodate(pg); -+ SetPageError(pg); -+ } else { -+ SetPageUptodate(pg); -+ ClearPageError(pg); -+ } -+ -+ flush_dcache_page(pg); -+ kunmap(pg); -+ -+ T(YAFFS_TRACE_OS, (TSTR("yaffs_readpage_nolock done\n"))); -+ return ret; -+} -+ -+static int yaffs_readpage_unlock(struct file *f, struct page *pg) -+{ -+ int ret = yaffs_readpage_nolock(f, pg); -+ UnlockPage(pg); -+ return ret; -+} -+ -+static int yaffs_readpage(struct file *f, struct page *pg) -+{ -+ int ret; -+ -+ T(YAFFS_TRACE_OS, (TSTR("yaffs_readpage\n"))); -+ ret=yaffs_readpage_unlock(f, pg); -+ T(YAFFS_TRACE_OS, (TSTR("yaffs_readpage done\n"))); -+ return ret; -+} -+ -+/* writepage inspired by/stolen from smbfs */ -+ -+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) -+static int yaffs_writepage(struct page *page, struct writeback_control *wbc) -+#else -+static int yaffs_writepage(struct page *page) -+#endif -+{ -+ yaffs_dev_t *dev; -+ struct address_space *mapping = page->mapping; -+ struct inode *inode; -+ unsigned long end_index; -+ char *buffer; -+ yaffs_obj_t *obj; -+ int nWritten = 0; -+ unsigned n_bytes; -+ loff_t i_size; -+ -+ if (!mapping) -+ BUG(); -+ inode = mapping->host; -+ if (!inode) -+ BUG(); -+ i_size = i_size_read(inode); -+ -+ end_index = i_size >> PAGE_CACHE_SHIFT; -+ -+ if(page->index < end_index) -+ n_bytes = PAGE_CACHE_SIZE; -+ else { -+ n_bytes = i_size & (PAGE_CACHE_SIZE -1); -+ -+ if (page->index > end_index || !n_bytes) { -+ T(YAFFS_TRACE_OS, -+ (TSTR("yaffs_writepage at %08x, inode size = %08x!!!\n"), -+ (unsigned)(page->index << PAGE_CACHE_SHIFT), -+ (unsigned)inode->i_size)); -+ T(YAFFS_TRACE_OS, -+ (TSTR(" -> don't care!!\n"))); -+ -+ zero_user_segment(page,0,PAGE_CACHE_SIZE); -+ set_page_writeback(page); -+ unlock_page(page); -+ end_page_writeback(page); -+ return 0; -+ } -+ } -+ -+ if(n_bytes != PAGE_CACHE_SIZE) -+ zero_user_segment(page,n_bytes,PAGE_CACHE_SIZE); -+ -+ get_page(page); -+ -+ buffer = kmap(page); -+ -+ obj = yaffs_InodeToObject(inode); -+ dev = obj->my_dev; -+ yaffs_gross_lock(dev); -+ -+ T(YAFFS_TRACE_OS, -+ (TSTR("yaffs_writepage at %08x, size %08x\n"), -+ (unsigned)(page->index << PAGE_CACHE_SHIFT), n_bytes)); -+ T(YAFFS_TRACE_OS, -+ (TSTR("writepag0: obj = %05x, ino = %05x\n"), -+ (int)obj->variant.file_variant.file_size, (int)inode->i_size)); -+ -+ nWritten = yaffs_wr_file(obj, buffer, -+ page->index << PAGE_CACHE_SHIFT, n_bytes, 0); -+ -+ yaffs_touch_super(dev); -+ -+ T(YAFFS_TRACE_OS, -+ (TSTR("writepag1: obj = %05x, ino = %05x\n"), -+ (int)obj->variant.file_variant.file_size, (int)inode->i_size)); -+ -+ yaffs_gross_unlock(dev); -+ -+ kunmap(page); -+ set_page_writeback(page); -+ unlock_page(page); -+ end_page_writeback(page); -+ put_page(page); -+ -+ return (nWritten == n_bytes) ? 0 : -ENOSPC; -+} -+ -+ -+#if (YAFFS_USE_WRITE_BEGIN_END > 0) -+static int yaffs_write_begin(struct file *filp, struct address_space *mapping, -+ loff_t pos, unsigned len, unsigned flags, -+ struct page **pagep, void **fsdata) -+{ -+ struct page *pg = NULL; -+ pgoff_t index = pos >> PAGE_CACHE_SHIFT; -+ -+ int ret = 0; -+ int space_held = 0; -+ -+ /* Get a page */ -+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 28) -+ pg = grab_cache_page_write_begin(mapping, index, flags); -+#else -+ pg = __grab_cache_page(mapping, index); -+#endif -+ -+ *pagep = pg; -+ if (!pg) { -+ ret = -ENOMEM; -+ goto out; -+ } -+ T(YAFFS_TRACE_OS, -+ (TSTR("start yaffs_write_begin index %d(%x) uptodate %d\n"), -+ (int)index,(int)index,Page_Uptodate(pg) ? 1 : 0)); -+ -+ /* Get fs space */ -+ space_held = yaffs_hold_space(filp); -+ -+ if (!space_held) { -+ ret = -ENOSPC; -+ goto out; -+ } -+ -+ /* Update page if required */ -+ -+ if (!Page_Uptodate(pg)) -+ ret = yaffs_readpage_nolock(filp, pg); -+ -+ if (ret) -+ goto out; -+ -+ /* Happy path return */ -+ T(YAFFS_TRACE_OS, (TSTR("end yaffs_write_begin - ok\n"))); -+ -+ return 0; -+ -+out: -+ T(YAFFS_TRACE_OS, -+ (TSTR("end yaffs_write_begin fail returning %d\n"), ret)); -+ if (space_held) -+ yaffs_release_space(filp); -+ if (pg) { -+ unlock_page(pg); -+ page_cache_release(pg); -+ } -+ return ret; -+} -+ -+#else -+ -+static int yaffs_prepare_write(struct file *f, struct page *pg, -+ unsigned offset, unsigned to) -+{ -+ T(YAFFS_TRACE_OS, (TSTR("yaffs_prepair_write\n"))); -+ -+ if (!Page_Uptodate(pg)) -+ return yaffs_readpage_nolock(f, pg); -+ return 0; -+} -+#endif -+ -+#if (YAFFS_USE_WRITE_BEGIN_END > 0) -+static int yaffs_write_end(struct file *filp, struct address_space *mapping, -+ loff_t pos, unsigned len, unsigned copied, -+ struct page *pg, void *fsdadata) -+{ -+ int ret = 0; -+ void *addr, *kva; -+ uint32_t offset_into_page = pos & (PAGE_CACHE_SIZE - 1); -+ -+ kva = kmap(pg); -+ addr = kva + offset_into_page; -+ -+ T(YAFFS_TRACE_OS, -+ ("yaffs_write_end addr %p pos %x n_bytes %d\n", -+ addr,(unsigned)pos, copied)); -+ -+ ret = yaffs_file_write(filp, addr, copied, &pos); -+ -+ if (ret != copied) { -+ T(YAFFS_TRACE_OS, -+ (TSTR("yaffs_write_end not same size ret %d copied %d\n"), -+ ret, copied)); -+ SetPageError(pg); -+ } else { -+ /* Nothing */ -+ } -+ -+ kunmap(pg); -+ -+ yaffs_release_space(filp); -+ unlock_page(pg); -+ page_cache_release(pg); -+ return ret; -+} -+#else -+ -+static int yaffs_commit_write(struct file *f, struct page *pg, unsigned offset, -+ unsigned to) -+{ -+ void *addr, *kva; -+ -+ loff_t pos = (((loff_t) pg->index) << PAGE_CACHE_SHIFT) + offset; -+ int n_bytes = to - offset; -+ int nWritten; -+ -+ unsigned spos = pos; -+ unsigned saddr; -+ -+ kva = kmap(pg); -+ addr = kva + offset; -+ -+ saddr = (unsigned) addr; -+ -+ T(YAFFS_TRACE_OS, -+ (TSTR("yaffs_commit_write addr %x pos %x n_bytes %d\n"), -+ saddr, spos, n_bytes)); -+ -+ nWritten = yaffs_file_write(f, addr, n_bytes, &pos); -+ -+ if (nWritten != n_bytes) { -+ T(YAFFS_TRACE_OS, -+ (TSTR("yaffs_commit_write not same size nWritten %d n_bytes %d\n"), -+ nWritten, n_bytes)); -+ SetPageError(pg); -+ } else { -+ /* Nothing */ -+ } -+ -+ kunmap(pg); -+ -+ T(YAFFS_TRACE_OS, -+ (TSTR("yaffs_commit_write returning %d\n"), -+ nWritten == n_bytes ? 0 : nWritten)); -+ -+ return nWritten == n_bytes ? 0 : nWritten; -+} -+#endif -+ -+ -+static void yaffs_fill_inode_from_obj(struct inode *inode, yaffs_obj_t *obj) -+{ -+ if (inode && obj) { -+ -+ -+ /* Check mode against the variant type and attempt to repair if broken. */ -+ __u32 mode = obj->yst_mode; -+ switch (obj->variant_type) { -+ case YAFFS_OBJECT_TYPE_FILE: -+ if (!S_ISREG(mode)) { -+ obj->yst_mode &= ~S_IFMT; -+ obj->yst_mode |= S_IFREG; -+ } -+ -+ break; -+ case YAFFS_OBJECT_TYPE_SYMLINK: -+ if (!S_ISLNK(mode)) { -+ obj->yst_mode &= ~S_IFMT; -+ obj->yst_mode |= S_IFLNK; -+ } -+ -+ break; -+ case YAFFS_OBJECT_TYPE_DIRECTORY: -+ if (!S_ISDIR(mode)) { -+ obj->yst_mode &= ~S_IFMT; -+ obj->yst_mode |= S_IFDIR; -+ } -+ -+ break; -+ case YAFFS_OBJECT_TYPE_UNKNOWN: -+ case YAFFS_OBJECT_TYPE_HARDLINK: -+ case YAFFS_OBJECT_TYPE_SPECIAL: -+ default: -+ /* TODO? */ -+ break; -+ } -+ -+ inode->i_flags |= S_NOATIME; -+ -+ inode->i_ino = obj->obj_id; -+ inode->i_mode = obj->yst_mode; -+ inode->i_uid = obj->yst_uid; -+ inode->i_gid = obj->yst_gid; -+#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 19)) -+ inode->i_blksize = inode->i_sb->s_blocksize; -+#endif -+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) -+ -+ inode->i_rdev = old_decode_dev(obj->yst_rdev); -+ inode->i_atime.tv_sec = (time_t) (obj->yst_atime); -+ inode->i_atime.tv_nsec = 0; -+ inode->i_mtime.tv_sec = (time_t) obj->yst_mtime; -+ inode->i_mtime.tv_nsec = 0; -+ inode->i_ctime.tv_sec = (time_t) obj->yst_ctime; -+ inode->i_ctime.tv_nsec = 0; -+#else -+ inode->i_rdev = obj->yst_rdev; -+ inode->i_atime = obj->yst_atime; -+ inode->i_mtime = obj->yst_mtime; -+ inode->i_ctime = obj->yst_ctime; -+#endif -+ inode->i_size = yaffs_get_obj_length(obj); -+ inode->i_blocks = (inode->i_size + 511) >> 9; -+ -+ inode->i_nlink = yaffs_get_obj_link_count(obj); -+ -+ T(YAFFS_TRACE_OS, -+ (TSTR("yaffs_fill_inode mode %x uid %d gid %d size %d count %d\n"), -+ inode->i_mode, inode->i_uid, inode->i_gid, -+ (int)inode->i_size, atomic_read(&inode->i_count))); -+ -+ switch (obj->yst_mode & S_IFMT) { -+ default: /* fifo, device or socket */ -+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) -+ init_special_inode(inode, obj->yst_mode, -+ old_decode_dev(obj->yst_rdev)); -+#else -+ init_special_inode(inode, obj->yst_mode, -+ (dev_t) (obj->yst_rdev)); -+#endif -+ break; -+ case S_IFREG: /* file */ -+ inode->i_op = &yaffs_file_inode_operations; -+ inode->i_fop = &yaffs_file_operations; -+ inode->i_mapping->a_ops = -+ &yaffs_file_address_operations; -+ break; -+ case S_IFDIR: /* directory */ -+ inode->i_op = &yaffs_dir_inode_operations; -+ inode->i_fop = &yaffs_dir_operations; -+ break; -+ case S_IFLNK: /* symlink */ -+ inode->i_op = &yaffs_symlink_inode_operations; -+ break; -+ } -+ -+ yaffs_InodeToObjectLV(inode) = obj; -+ -+ obj->my_inode = inode; -+ -+ } else { -+ T(YAFFS_TRACE_OS, -+ (TSTR("yaffs_FileInode invalid parameters\n"))); -+ } -+ -+} -+ -+struct inode *yaffs_get_inode(struct super_block *sb, int mode, int dev, -+ yaffs_obj_t *obj) -+{ -+ struct inode *inode; -+ -+ if (!sb) { -+ T(YAFFS_TRACE_OS, -+ (TSTR("yaffs_get_inode for NULL super_block!!\n"))); -+ return NULL; -+ -+ } -+ -+ if (!obj) { -+ T(YAFFS_TRACE_OS, -+ (TSTR("yaffs_get_inode for NULL object!!\n"))); -+ return NULL; -+ -+ } -+ -+ T(YAFFS_TRACE_OS, -+ (TSTR("yaffs_get_inode for object %d\n"), obj->obj_id)); -+ -+ inode = Y_IGET(sb, obj->obj_id); -+ if (IS_ERR(inode)) -+ return NULL; -+ -+ /* NB Side effect: iget calls back to yaffs_read_inode(). */ -+ /* iget also increments the inode's i_count */ -+ /* NB You can't be holding grossLock or deadlock will happen! */ -+ -+ return inode; -+} -+ -+static ssize_t yaffs_file_write(struct file *f, const char *buf, size_t n, -+ loff_t *pos) -+{ -+ yaffs_obj_t *obj; -+ int nWritten, ipos; -+ struct inode *inode; -+ yaffs_dev_t *dev; -+ -+ obj = yaffs_dentry_to_obj(f->f_dentry); -+ -+ dev = obj->my_dev; -+ -+ yaffs_gross_lock(dev); -+ -+ inode = f->f_dentry->d_inode; -+ -+ if (!S_ISBLK(inode->i_mode) && f->f_flags & O_APPEND) -+ ipos = inode->i_size; -+ else -+ ipos = *pos; -+ -+ if (!obj) -+ T(YAFFS_TRACE_OS, -+ (TSTR("yaffs_file_write: hey obj is null!\n"))); -+ else -+ T(YAFFS_TRACE_OS, -+ (TSTR("yaffs_file_write about to write writing %u(%x) bytes" -+ "to object %d at %d(%x)\n"), -+ (unsigned) n, (unsigned) n, obj->obj_id, ipos,ipos)); -+ -+ nWritten = yaffs_wr_file(obj, buf, ipos, n, 0); -+ -+ yaffs_touch_super(dev); -+ -+ T(YAFFS_TRACE_OS, -+ (TSTR("yaffs_file_write: %d(%x) bytes written\n"), -+ (unsigned )n,(unsigned)n)); -+ -+ if (nWritten > 0) { -+ ipos += nWritten; -+ *pos = ipos; -+ if (ipos > inode->i_size) { -+ inode->i_size = ipos; -+ inode->i_blocks = (ipos + 511) >> 9; -+ -+ T(YAFFS_TRACE_OS, -+ (TSTR("yaffs_file_write size updated to %d bytes, " -+ "%d blocks\n"), -+ ipos, (int)(inode->i_blocks))); -+ } -+ -+ } -+ yaffs_gross_unlock(dev); -+ return (nWritten == 0) && (n > 0) ? -ENOSPC : nWritten; -+} -+ -+/* Space holding and freeing is done to ensure we have space available for write_begin/end */ -+/* For now we just assume few parallel writes and check against a small number. */ -+/* Todo: need to do this with a counter to handle parallel reads better */ -+ -+static ssize_t yaffs_hold_space(struct file *f) -+{ -+ yaffs_obj_t *obj; -+ yaffs_dev_t *dev; -+ -+ int n_free_chunks; -+ -+ -+ obj = yaffs_dentry_to_obj(f->f_dentry); -+ -+ dev = obj->my_dev; -+ -+ yaffs_gross_lock(dev); -+ -+ n_free_chunks = yaffs_get_n_free_chunks(dev); -+ -+ yaffs_gross_unlock(dev); -+ -+ return (n_free_chunks > 20) ? 1 : 0; -+} -+ -+static void yaffs_release_space(struct file *f) -+{ -+ yaffs_obj_t *obj; -+ yaffs_dev_t *dev; -+ -+ -+ obj = yaffs_dentry_to_obj(f->f_dentry); -+ -+ dev = obj->my_dev; -+ -+ yaffs_gross_lock(dev); -+ -+ -+ yaffs_gross_unlock(dev); -+} -+ -+ -+static loff_t yaffs_dir_llseek(struct file *file, loff_t offset, int origin) -+{ -+ long long retval; -+ -+ lock_kernel(); -+ -+ switch (origin){ -+ case 2: -+ offset += i_size_read(file->f_path.dentry->d_inode); -+ break; -+ case 1: -+ offset += file->f_pos; -+ } -+ retval = -EINVAL; -+ -+ if (offset >= 0){ -+ if (offset != file->f_pos) -+ file->f_pos = offset; -+ -+ retval = offset; -+ } -+ unlock_kernel(); -+ return retval; -+} -+ -+ -+static int yaffs_readdir(struct file *f, void *dirent, filldir_t filldir) -+{ -+ yaffs_obj_t *obj; -+ yaffs_dev_t *dev; -+ struct yaffs_SearchContext *sc; -+ struct inode *inode = f->f_dentry->d_inode; -+ unsigned long offset, curoffs; -+ yaffs_obj_t *l; -+ int retVal = 0; -+ -+ char name[YAFFS_MAX_NAME_LENGTH + 1]; -+ -+ obj = yaffs_dentry_to_obj(f->f_dentry); -+ dev = obj->my_dev; -+ -+ yaffs_gross_lock(dev); -+ -+ yaffs_dev_to_lc(dev)->readdirProcess = current; -+ -+ offset = f->f_pos; -+ -+ sc = yaffs_NewSearch(obj); -+ if(!sc){ -+ retVal = -ENOMEM; -+ goto out; -+ } -+ -+ T(YAFFS_TRACE_OS, (TSTR("yaffs_readdir: starting at %d\n"), (int)offset)); -+ -+ if (offset == 0) { -+ T(YAFFS_TRACE_OS, -+ (TSTR("yaffs_readdir: entry . ino %d \n"), -+ (int)inode->i_ino)); -+ yaffs_gross_unlock(dev); -+ if (filldir(dirent, ".", 1, offset, inode->i_ino, DT_DIR) < 0){ -+ yaffs_gross_lock(dev); -+ goto out; -+ } -+ yaffs_gross_lock(dev); -+ offset++; -+ f->f_pos++; -+ } -+ if (offset == 1) { -+ T(YAFFS_TRACE_OS, -+ (TSTR("yaffs_readdir: entry .. ino %d \n"), -+ (int)f->f_dentry->d_parent->d_inode->i_ino)); -+ yaffs_gross_unlock(dev); -+ if (filldir(dirent, "..", 2, offset, -+ f->f_dentry->d_parent->d_inode->i_ino, DT_DIR) < 0){ -+ yaffs_gross_lock(dev); -+ goto out; -+ } -+ yaffs_gross_lock(dev); -+ offset++; -+ f->f_pos++; -+ } -+ -+ curoffs = 1; -+ -+ /* If the directory has changed since the open or last call to -+ readdir, rewind to after the 2 canned entries. */ -+ if (f->f_version != inode->i_version) { -+ offset = 2; -+ f->f_pos = offset; -+ f->f_version = inode->i_version; -+ } -+ -+ while(sc->nextReturn){ -+ curoffs++; -+ l = sc->nextReturn; -+ if (curoffs >= offset) { -+ int this_inode = yaffs_get_obj_inode(l); -+ int this_type = yaffs_get_obj_type(l); -+ -+ yaffs_get_obj_name(l, name, -+ YAFFS_MAX_NAME_LENGTH + 1); -+ T(YAFFS_TRACE_OS, -+ (TSTR("yaffs_readdir: %s inode %d\n"), -+ name, yaffs_get_obj_inode(l))); -+ -+ yaffs_gross_unlock(dev); -+ -+ if (filldir(dirent, -+ name, -+ strlen(name), -+ offset, -+ this_inode, -+ this_type) < 0){ -+ yaffs_gross_lock(dev); -+ goto out; -+ } -+ -+ yaffs_gross_lock(dev); -+ -+ offset++; -+ f->f_pos++; -+ } -+ yaffs_search_advance(sc); -+ } -+ -+out: -+ yaffs_search_end(sc); -+ yaffs_dev_to_lc(dev)->readdirProcess = NULL; -+ yaffs_gross_unlock(dev); -+ -+ return retVal; -+} -+ -+ -+ -+/* -+ * File creation. Allocate an inode, and we're done.. -+ */ -+ -+#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 29) -+#define YCRED(x) x -+#else -+#define YCRED(x) (x->cred) -+#endif -+ -+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) -+static int yaffs_mknod(struct inode *dir, struct dentry *dentry, int mode, -+ dev_t rdev) -+#else -+static int yaffs_mknod(struct inode *dir, struct dentry *dentry, int mode, -+ int rdev) -+#endif -+{ -+ struct inode *inode; -+ -+ yaffs_obj_t *obj = NULL; -+ yaffs_dev_t *dev; -+ -+ yaffs_obj_t *parent = yaffs_InodeToObject(dir); -+ -+ int error = -ENOSPC; -+ uid_t uid = YCRED(current)->fsuid; -+ gid_t gid = (dir->i_mode & S_ISGID) ? dir->i_gid : YCRED(current)->fsgid; -+ -+ if ((dir->i_mode & S_ISGID) && S_ISDIR(mode)) -+ mode |= S_ISGID; -+ -+ if (parent) { -+ T(YAFFS_TRACE_OS, -+ (TSTR("yaffs_mknod: parent object %d type %d\n"), -+ parent->obj_id, parent->variant_type)); -+ } else { -+ T(YAFFS_TRACE_OS, -+ (TSTR("yaffs_mknod: could not get parent object\n"))); -+ return -EPERM; -+ } -+ -+ T(YAFFS_TRACE_OS, (TSTR("yaffs_mknod: making oject for %s, " -+ "mode %x dev %x\n"), -+ dentry->d_name.name, mode, rdev)); -+ -+ dev = parent->my_dev; -+ -+ yaffs_gross_lock(dev); -+ -+ switch (mode & S_IFMT) { -+ default: -+ /* Special (socket, fifo, device...) */ -+ T(YAFFS_TRACE_OS, (TSTR("yaffs_mknod: making special\n"))); -+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) -+ obj = yaffs_create_special(parent, dentry->d_name.name, mode, uid, -+ gid, old_encode_dev(rdev)); -+#else -+ obj = yaffs_create_special(parent, dentry->d_name.name, mode, uid, -+ gid, rdev); -+#endif -+ break; -+ case S_IFREG: /* file */ -+ T(YAFFS_TRACE_OS, (TSTR("yaffs_mknod: making file\n"))); -+ obj = yaffs_create_file(parent, dentry->d_name.name, mode, uid, -+ gid); -+ break; -+ case S_IFDIR: /* directory */ -+ T(YAFFS_TRACE_OS, -+ (TSTR("yaffs_mknod: making directory\n"))); -+ obj = yaffs_create_dir(parent, dentry->d_name.name, mode, -+ uid, gid); -+ break; -+ case S_IFLNK: /* symlink */ -+ T(YAFFS_TRACE_OS, (TSTR("yaffs_mknod: making symlink\n"))); -+ obj = NULL; /* Do we ever get here? */ -+ break; -+ } -+ -+ /* Can not call yaffs_get_inode() with gross lock held */ -+ yaffs_gross_unlock(dev); -+ -+ if (obj) { -+ inode = yaffs_get_inode(dir->i_sb, mode, rdev, obj); -+ d_instantiate(dentry, inode); -+ update_dir_time(dir); -+ T(YAFFS_TRACE_OS, -+ (TSTR("yaffs_mknod created object %d count = %d\n"), -+ obj->obj_id, atomic_read(&inode->i_count))); -+ error = 0; -+ yaffs_fill_inode_from_obj(dir,parent); -+ } else { -+ T(YAFFS_TRACE_OS, -+ (TSTR("yaffs_mknod failed making object\n"))); -+ error = -ENOMEM; -+ } -+ -+ return error; -+} -+ -+static int yaffs_mkdir(struct inode *dir, struct dentry *dentry, int mode) -+{ -+ int retVal; -+ T(YAFFS_TRACE_OS, (TSTR("yaffs_mkdir\n"))); -+ retVal = yaffs_mknod(dir, dentry, mode | S_IFDIR, 0); -+ return retVal; -+} -+ -+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) -+static int yaffs_create(struct inode *dir, struct dentry *dentry, int mode, -+ struct nameidata *n) -+#else -+static int yaffs_create(struct inode *dir, struct dentry *dentry, int mode) -+#endif -+{ -+ T(YAFFS_TRACE_OS,(TSTR("yaffs_create\n"))); -+ return yaffs_mknod(dir, dentry, mode | S_IFREG, 0); -+} -+ -+static int yaffs_unlink(struct inode *dir, struct dentry *dentry) -+{ -+ int retVal; -+ -+ yaffs_dev_t *dev; -+ yaffs_obj_t *obj; -+ -+ T(YAFFS_TRACE_OS, -+ (TSTR("yaffs_unlink %d:%s\n"), -+ (int)(dir->i_ino), -+ dentry->d_name.name)); -+ obj = yaffs_InodeToObject(dir); -+ dev = obj->my_dev; -+ -+ yaffs_gross_lock(dev); -+ -+ retVal = yaffs_unlinker(obj, dentry->d_name.name); -+ -+ if (retVal == YAFFS_OK) { -+ dentry->d_inode->i_nlink--; -+ dir->i_version++; -+ yaffs_gross_unlock(dev); -+ mark_inode_dirty(dentry->d_inode); -+ update_dir_time(dir); -+ return 0; -+ } -+ yaffs_gross_unlock(dev); -+ return -ENOTEMPTY; -+} -+ -+/* -+ * Create a link... -+ */ -+static int yaffs_link(struct dentry *old_dentry, struct inode *dir, -+ struct dentry *dentry) -+{ -+ struct inode *inode = old_dentry->d_inode; -+ yaffs_obj_t *obj = NULL; -+ yaffs_obj_t *link = NULL; -+ yaffs_dev_t *dev; -+ -+ T(YAFFS_TRACE_OS, (TSTR("yaffs_link\n"))); -+ -+ obj = yaffs_InodeToObject(inode); -+ dev = obj->my_dev; -+ -+ yaffs_gross_lock(dev); -+ -+ if (!S_ISDIR(inode->i_mode)) /* Don't link directories */ -+ link = yaffs_link_obj(yaffs_InodeToObject(dir), dentry->d_name.name, -+ obj); -+ -+ if (link) { -+ old_dentry->d_inode->i_nlink = yaffs_get_obj_link_count(obj); -+ d_instantiate(dentry, old_dentry->d_inode); -+ atomic_inc(&old_dentry->d_inode->i_count); -+ T(YAFFS_TRACE_OS, -+ (TSTR("yaffs_link link count %d i_count %d\n"), -+ old_dentry->d_inode->i_nlink, -+ atomic_read(&old_dentry->d_inode->i_count))); -+ } -+ -+ yaffs_gross_unlock(dev); -+ -+ if (link){ -+ update_dir_time(dir); -+ return 0; -+ } -+ -+ return -EPERM; -+} -+ -+static int yaffs_symlink(struct inode *dir, struct dentry *dentry, -+ const char *symname) -+{ -+ yaffs_obj_t *obj; -+ yaffs_dev_t *dev; -+ uid_t uid = YCRED(current)->fsuid; -+ gid_t gid = (dir->i_mode & S_ISGID) ? dir->i_gid : YCRED(current)->fsgid; -+ -+ T(YAFFS_TRACE_OS, (TSTR("yaffs_symlink\n"))); -+ -+ dev = yaffs_InodeToObject(dir)->my_dev; -+ yaffs_gross_lock(dev); -+ obj = yaffs_create_symlink(yaffs_InodeToObject(dir), dentry->d_name.name, -+ S_IFLNK | S_IRWXUGO, uid, gid, symname); -+ yaffs_gross_unlock(dev); -+ -+ if (obj) { -+ struct inode *inode; -+ -+ inode = yaffs_get_inode(dir->i_sb, obj->yst_mode, 0, obj); -+ d_instantiate(dentry, inode); -+ update_dir_time(dir); -+ T(YAFFS_TRACE_OS, (TSTR("symlink created OK\n"))); -+ return 0; -+ } else { -+ T(YAFFS_TRACE_OS, (TSTR("symlink not created\n"))); -+ } -+ -+ return -ENOMEM; -+} -+ -+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 34)) -+static int yaffs_sync_object(struct file *file, int datasync) -+#else -+static int yaffs_sync_object(struct file *file, struct dentry *dentry, -+ int datasync) -+#endif -+{ -+ -+ yaffs_obj_t *obj; -+ yaffs_dev_t *dev; -+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 34)) -+ struct dentry *dentry = file->f_path.dentry; -+#endif -+ -+ obj = yaffs_dentry_to_obj(dentry); -+ -+ dev = obj->my_dev; -+ -+ T(YAFFS_TRACE_OS | YAFFS_TRACE_SYNC, -+ (TSTR("yaffs_sync_object\n"))); -+ yaffs_gross_lock(dev); -+ yaffs_flush_file(obj, 1, datasync); -+ yaffs_gross_unlock(dev); -+ return 0; -+} -+ -+/* -+ * The VFS layer already does all the dentry stuff for rename. -+ * -+ * NB: POSIX says you can rename an object over an old object of the same name -+ */ -+static int yaffs_rename(struct inode *old_dir, struct dentry *old_dentry, -+ struct inode *new_dir, struct dentry *new_dentry) -+{ -+ yaffs_dev_t *dev; -+ int retVal = YAFFS_FAIL; -+ yaffs_obj_t *target; -+ -+ T(YAFFS_TRACE_OS, (TSTR("yaffs_rename\n"))); -+ dev = yaffs_InodeToObject(old_dir)->my_dev; -+ -+ yaffs_gross_lock(dev); -+ -+ /* Check if the target is an existing directory that is not empty. */ -+ target = yaffs_find_by_name(yaffs_InodeToObject(new_dir), -+ new_dentry->d_name.name); -+ -+ -+ -+ if (target && target->variant_type == YAFFS_OBJECT_TYPE_DIRECTORY && -+ !ylist_empty(&target->variant.dir_variant.children)) { -+ -+ T(YAFFS_TRACE_OS, (TSTR("target is non-empty dir\n"))); -+ -+ retVal = YAFFS_FAIL; -+ } else { -+ /* Now does unlinking internally using shadowing mechanism */ -+ T(YAFFS_TRACE_OS, (TSTR("calling yaffs_rename_obj\n"))); -+ -+ retVal = yaffs_rename_obj(yaffs_InodeToObject(old_dir), -+ old_dentry->d_name.name, -+ yaffs_InodeToObject(new_dir), -+ new_dentry->d_name.name); -+ } -+ yaffs_gross_unlock(dev); -+ -+ if (retVal == YAFFS_OK) { -+ if (target) { -+ new_dentry->d_inode->i_nlink--; -+ mark_inode_dirty(new_dentry->d_inode); -+ } -+ -+ update_dir_time(old_dir); -+ if(old_dir != new_dir) -+ update_dir_time(new_dir); -+ return 0; -+ } else { -+ return -ENOTEMPTY; -+ } -+} -+ -+static int yaffs_setattr(struct dentry *dentry, struct iattr *attr) -+{ -+ struct inode *inode = dentry->d_inode; -+ int error = 0; -+ yaffs_dev_t *dev; -+ -+ T(YAFFS_TRACE_OS, -+ (TSTR("yaffs_setattr of object %d\n"), -+ yaffs_InodeToObject(inode)->obj_id)); -+ -+ /* Fail if a requested resize >= 2GB */ -+ if (attr->ia_valid & ATTR_SIZE && -+ (attr->ia_size >> 31)) -+ error = -EINVAL; -+ -+ if (error == 0) -+ error = inode_change_ok(inode, attr); -+ if (error == 0) { -+ int result; -+ if (!error){ -+ error = yaffs_vfs_setattr(inode, attr); -+ T(YAFFS_TRACE_OS,(TSTR("inode_setattr called\n"))); -+ if (attr->ia_valid & ATTR_SIZE){ -+ yaffs_vfs_setsize(inode,attr->ia_size); -+ inode->i_blocks = (inode->i_size + 511) >> 9; -+ } -+ } -+ dev = yaffs_InodeToObject(inode)->my_dev; -+ if (attr->ia_valid & ATTR_SIZE){ -+ T(YAFFS_TRACE_OS,(TSTR("resize to %d(%x)\n"), -+ (int)(attr->ia_size),(int)(attr->ia_size))); -+ } -+ yaffs_gross_lock(dev); -+ result = yaffs_set_attribs(yaffs_InodeToObject(inode), attr); -+ if(result == YAFFS_OK) { -+ error = 0; -+ } else { -+ error = -EPERM; -+ } -+ yaffs_gross_unlock(dev); -+ -+ } -+ -+ T(YAFFS_TRACE_OS, -+ (TSTR("yaffs_setattr done returning %d\n"),error)); -+ -+ return error; -+} -+ -+#ifdef CONFIG_YAFFS_XATTR -+int yaffs_setxattr(struct dentry *dentry, const char *name, -+ const void *value, size_t size, int flags) -+{ -+ struct inode *inode = dentry->d_inode; -+ int error = 0; -+ yaffs_dev_t *dev; -+ yaffs_obj_t *obj = yaffs_InodeToObject(inode); -+ -+ T(YAFFS_TRACE_OS, -+ (TSTR("yaffs_setxattr of object %d\n"), -+ obj->obj_id)); -+ -+ -+ if (error == 0) { -+ int result; -+ dev = obj->my_dev; -+ yaffs_gross_lock(dev); -+ result = yaffs_set_xattrib(obj, name, value, size, flags); -+ if(result == YAFFS_OK) -+ error = 0; -+ else if(result < 0) -+ error = result; -+ yaffs_gross_unlock(dev); -+ -+ } -+ T(YAFFS_TRACE_OS, -+ (TSTR("yaffs_setxattr done returning %d\n"),error)); -+ -+ return error; -+} -+ -+ -+ssize_t yaffs_getxattr(struct dentry *dentry, const char *name, void *buff, -+ size_t size) -+{ -+ struct inode *inode = dentry->d_inode; -+ int error = 0; -+ yaffs_dev_t *dev; -+ yaffs_obj_t *obj = yaffs_InodeToObject(inode); -+ -+ T(YAFFS_TRACE_OS, -+ (TSTR("yaffs_getxattr \"%s\" from object %d\n"), -+ name, obj->obj_id)); -+ -+ if (error == 0) { -+ dev = obj->my_dev; -+ yaffs_gross_lock(dev); -+ error = yaffs_get_xattrib(obj, name, buff, size); -+ yaffs_gross_unlock(dev); -+ -+ } -+ T(YAFFS_TRACE_OS, -+ (TSTR("yaffs_getxattr done returning %d\n"),error)); -+ -+ return error; -+} -+ -+int yaffs_removexattr(struct dentry *dentry, const char *name) -+{ -+ struct inode *inode = dentry->d_inode; -+ int error = 0; -+ yaffs_dev_t *dev; -+ yaffs_obj_t *obj = yaffs_InodeToObject(inode); -+ -+ T(YAFFS_TRACE_OS, -+ (TSTR("yaffs_removexattr of object %d\n"), -+ obj->obj_id)); -+ -+ -+ if (error == 0) { -+ int result; -+ dev = obj->my_dev; -+ yaffs_gross_lock(dev); -+ result = yaffs_remove_xattrib(obj, name); -+ if(result == YAFFS_OK) -+ error = 0; -+ else if(result < 0) -+ error = result; -+ yaffs_gross_unlock(dev); -+ -+ } -+ T(YAFFS_TRACE_OS, -+ (TSTR("yaffs_removexattr done returning %d\n"),error)); -+ -+ return error; -+} -+ -+ssize_t yaffs_listxattr(struct dentry *dentry, char *buff, size_t size) -+{ -+ struct inode *inode = dentry->d_inode; -+ int error = 0; -+ yaffs_dev_t *dev; -+ yaffs_obj_t *obj = yaffs_InodeToObject(inode); -+ -+ T(YAFFS_TRACE_OS, -+ (TSTR("yaffs_listxattr of object %d\n"), -+ obj->obj_id)); -+ -+ -+ if (error == 0) { -+ dev = obj->my_dev; -+ yaffs_gross_lock(dev); -+ error = yaffs_list_xattrib(obj, buff, size); -+ yaffs_gross_unlock(dev); -+ -+ } -+ T(YAFFS_TRACE_OS, -+ (TSTR("yaffs_listxattr done returning %d\n"),error)); -+ -+ return error; -+} -+ -+#endif -+ -+ -+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) -+static int yaffs_statfs(struct dentry *dentry, struct kstatfs *buf) -+{ -+ yaffs_dev_t *dev = yaffs_dentry_to_obj(dentry)->my_dev; -+ struct super_block *sb = dentry->d_sb; -+#elif (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) -+static int yaffs_statfs(struct super_block *sb, struct kstatfs *buf) -+{ -+ yaffs_dev_t *dev = yaffs_SuperToDevice(sb); -+#else -+static int yaffs_statfs(struct super_block *sb, struct statfs *buf) -+{ -+ yaffs_dev_t *dev = yaffs_SuperToDevice(sb); -+#endif -+ -+ T(YAFFS_TRACE_OS, (TSTR("yaffs_statfs\n"))); -+ -+ yaffs_gross_lock(dev); -+ -+ buf->f_type = YAFFS_MAGIC; -+ buf->f_bsize = sb->s_blocksize; -+ buf->f_namelen = 255; -+ -+ if (dev->data_bytes_per_chunk & (dev->data_bytes_per_chunk - 1)) { -+ /* Do this if chunk size is not a power of 2 */ -+ -+ uint64_t bytesInDev; -+ uint64_t bytesFree; -+ -+ bytesInDev = ((uint64_t)((dev->param.end_block - dev->param.start_block + 1))) * -+ ((uint64_t)(dev->param.chunks_per_block * dev->data_bytes_per_chunk)); -+ -+ do_div(bytesInDev, sb->s_blocksize); /* bytesInDev becomes the number of blocks */ -+ buf->f_blocks = bytesInDev; -+ -+ bytesFree = ((uint64_t)(yaffs_get_n_free_chunks(dev))) * -+ ((uint64_t)(dev->data_bytes_per_chunk)); -+ -+ do_div(bytesFree, sb->s_blocksize); -+ -+ buf->f_bfree = bytesFree; -+ -+ } else if (sb->s_blocksize > dev->data_bytes_per_chunk) { -+ -+ buf->f_blocks = -+ (dev->param.end_block - dev->param.start_block + 1) * -+ dev->param.chunks_per_block / -+ (sb->s_blocksize / dev->data_bytes_per_chunk); -+ buf->f_bfree = -+ yaffs_get_n_free_chunks(dev) / -+ (sb->s_blocksize / dev->data_bytes_per_chunk); -+ } else { -+ buf->f_blocks = -+ (dev->param.end_block - dev->param.start_block + 1) * -+ dev->param.chunks_per_block * -+ (dev->data_bytes_per_chunk / sb->s_blocksize); -+ -+ buf->f_bfree = -+ yaffs_get_n_free_chunks(dev) * -+ (dev->data_bytes_per_chunk / sb->s_blocksize); -+ } -+ -+ buf->f_files = 0; -+ buf->f_ffree = 0; -+ buf->f_bavail = buf->f_bfree; -+ -+ yaffs_gross_unlock(dev); -+ return 0; -+} -+ -+ -+ -+static void yaffs_flush_inodes(struct super_block *sb) -+{ -+ struct inode *iptr; -+ yaffs_obj_t *obj; -+ -+ list_for_each_entry(iptr,&sb->s_inodes, i_sb_list){ -+ obj = yaffs_InodeToObject(iptr); -+ if(obj){ -+ T(YAFFS_TRACE_OS, (TSTR("flushing obj %d\n"), -+ obj->obj_id)); -+ yaffs_flush_file(obj,1,0); -+ } -+ } -+} -+ -+ -+static void yaffs_flush_super(struct super_block *sb, int do_checkpoint) -+{ -+ yaffs_dev_t *dev = yaffs_SuperToDevice(sb); -+ if(!dev) -+ return; -+ -+ yaffs_flush_inodes(sb); -+ yaffs_update_dirty_dirs(dev); -+ yaffs_flush_whole_cache(dev); -+ if(do_checkpoint) -+ yaffs_checkpoint_save(dev); -+} -+ -+ -+static unsigned yaffs_bg_gc_urgency(yaffs_dev_t *dev) -+{ -+ unsigned erasedChunks = dev->n_erased_blocks * dev->param.chunks_per_block; -+ struct yaffs_LinuxContext *context = yaffs_dev_to_lc(dev); -+ unsigned scatteredFree = 0; /* Free chunks not in an erased block */ -+ -+ if(erasedChunks < dev->n_free_chunks) -+ scatteredFree = (dev->n_free_chunks - erasedChunks); -+ -+ if(!context->bgRunning) -+ return 0; -+ else if(scatteredFree < (dev->param.chunks_per_block * 2)) -+ return 0; -+ else if(erasedChunks > dev->n_free_chunks/2) -+ return 0; -+ else if(erasedChunks > dev->n_free_chunks/4) -+ return 1; -+ else -+ return 2; -+} -+ -+static int yaffs_do_sync_fs(struct super_block *sb, -+ int request_checkpoint) -+{ -+ -+ yaffs_dev_t *dev = yaffs_SuperToDevice(sb); -+ unsigned int oneshot_checkpoint = (yaffs_auto_checkpoint & 4); -+ unsigned gc_urgent = yaffs_bg_gc_urgency(dev); -+ int do_checkpoint; -+ -+ T(YAFFS_TRACE_OS | YAFFS_TRACE_SYNC | YAFFS_TRACE_BACKGROUND, -+ (TSTR("yaffs_do_sync_fs: gc-urgency %d %s %s%s\n"), -+ gc_urgent, -+ sb->s_dirt ? "dirty" : "clean", -+ request_checkpoint ? "checkpoint requested" : "no checkpoint", -+ oneshot_checkpoint ? " one-shot" : "" )); -+ -+ yaffs_gross_lock(dev); -+ do_checkpoint = ((request_checkpoint && !gc_urgent) || -+ oneshot_checkpoint) && -+ !dev->is_checkpointed; -+ -+ if (sb->s_dirt || do_checkpoint) { -+ yaffs_flush_super(sb, !dev->is_checkpointed && do_checkpoint); -+ sb->s_dirt = 0; -+ if(oneshot_checkpoint) -+ yaffs_auto_checkpoint &= ~4; -+ } -+ yaffs_gross_unlock(dev); -+ -+ return 0; -+} -+ -+/* -+ * yaffs background thread functions . -+ * yaffs_bg_thread_fn() the thread function -+ * yaffs_bg_start() launches the background thread. -+ * yaffs_bg_stop() cleans up the background thread. -+ * -+ * NB: -+ * The thread should only run after the yaffs is initialised -+ * The thread should be stopped before yaffs is unmounted. -+ * The thread should not do any writing while the fs is in read only. -+ */ -+ -+#ifdef YAFFS_COMPILE_BACKGROUND -+ -+void yaffs_background_waker(unsigned long data) -+{ -+ wake_up_process((struct task_struct *)data); -+} -+ -+static int yaffs_bg_thread_fn(void *data) -+{ -+ yaffs_dev_t *dev = (yaffs_dev_t *)data; -+ struct yaffs_LinuxContext *context = yaffs_dev_to_lc(dev); -+ unsigned long now = jiffies; -+ unsigned long next_dir_update = now; -+ unsigned long next_gc = now; -+ unsigned long expires; -+ unsigned int urgency; -+ -+ int gcResult; -+ struct timer_list timer; -+ -+ T(YAFFS_TRACE_BACKGROUND, -+ (TSTR("yaffs_background starting for dev %p\n"), -+ (void *)dev)); -+ -+#ifdef YAFFS_COMPILE_FREEZER -+ set_freezable(); -+#endif -+ while(context->bgRunning){ -+ T(YAFFS_TRACE_BACKGROUND, -+ (TSTR("yaffs_background\n"))); -+ -+ if(kthread_should_stop()) -+ break; -+ -+#ifdef YAFFS_COMPILE_FREEZER -+ if(try_to_freeze()) -+ continue; -+#endif -+ yaffs_gross_lock(dev); -+ -+ now = jiffies; -+ -+ if(time_after(now, next_dir_update) && yaffs_bg_enable){ -+ yaffs_update_dirty_dirs(dev); -+ next_dir_update = now + HZ; -+ } -+ -+ if(time_after(now,next_gc) && yaffs_bg_enable){ -+ if(!dev->is_checkpointed){ -+ urgency = yaffs_bg_gc_urgency(dev); -+ gcResult = yaffs_bg_gc(dev, urgency); -+ if(urgency > 1) -+ next_gc = now + HZ/20+1; -+ else if(urgency > 0) -+ next_gc = now + HZ/10+1; -+ else -+ next_gc = now + HZ * 2; -+ } else /* -+ * gc not running so set to next_dir_update -+ * to cut down on wake ups -+ */ -+ next_gc = next_dir_update; -+ } -+ yaffs_gross_unlock(dev); -+#if 1 -+ expires = next_dir_update; -+ if (time_before(next_gc,expires)) -+ expires = next_gc; -+ if(time_before(expires,now)) -+ expires = now + HZ; -+ -+ Y_INIT_TIMER(&timer); -+ timer.expires = expires+1; -+ timer.data = (unsigned long) current; -+ timer.function = yaffs_background_waker; -+ -+ set_current_state(TASK_INTERRUPTIBLE); -+ add_timer(&timer); -+ schedule(); -+ del_timer_sync(&timer); -+#else -+ msleep(10); -+#endif -+ } -+ -+ return 0; -+} -+ -+static int yaffs_bg_start(yaffs_dev_t *dev) -+{ -+ int retval = 0; -+ struct yaffs_LinuxContext *context = yaffs_dev_to_lc(dev); -+ -+ if(dev->read_only) -+ return -1; -+ -+ context->bgRunning = 1; -+ -+ context->bgThread = kthread_run(yaffs_bg_thread_fn, -+ (void *)dev,"yaffs-bg-%d",context->mount_id); -+ -+ if(IS_ERR(context->bgThread)){ -+ retval = PTR_ERR(context->bgThread); -+ context->bgThread = NULL; -+ context->bgRunning = 0; -+ } -+ return retval; -+} -+ -+static void yaffs_bg_stop(yaffs_dev_t *dev) -+{ -+ struct yaffs_LinuxContext *ctxt = yaffs_dev_to_lc(dev); -+ -+ ctxt->bgRunning = 0; -+ -+ if( ctxt->bgThread){ -+ kthread_stop(ctxt->bgThread); -+ ctxt->bgThread = NULL; -+ } -+} -+#else -+static int yaffs_bg_thread_fn(void *data) -+{ -+ return 0; -+} -+ -+static int yaffs_bg_start(yaffs_dev_t *dev) -+{ -+ return 0; -+} -+ -+static void yaffs_bg_stop(yaffs_dev_t *dev) -+{ -+} -+#endif -+ -+ -+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) -+static void yaffs_write_super(struct super_block *sb) -+#else -+static int yaffs_write_super(struct super_block *sb) -+#endif -+{ -+ unsigned request_checkpoint = (yaffs_auto_checkpoint >= 2); -+ -+ T(YAFFS_TRACE_OS | YAFFS_TRACE_SYNC | YAFFS_TRACE_BACKGROUND, -+ (TSTR("yaffs_write_super%s\n"), -+ request_checkpoint ? " checkpt" : "")); -+ -+ yaffs_do_sync_fs(sb, request_checkpoint); -+ -+#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 18)) -+ return 0; -+#endif -+} -+ -+ -+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) -+static int yaffs_sync_fs(struct super_block *sb, int wait) -+#else -+static int yaffs_sync_fs(struct super_block *sb) -+#endif -+{ -+ unsigned request_checkpoint = (yaffs_auto_checkpoint >= 1); -+ -+ T(YAFFS_TRACE_OS | YAFFS_TRACE_SYNC, -+ (TSTR("yaffs_sync_fs%s\n"), -+ request_checkpoint ? " checkpt" : "")); -+ -+ yaffs_do_sync_fs(sb, request_checkpoint); -+ -+ return 0; -+} -+ -+#ifdef YAFFS_USE_OWN_IGET -+ -+static struct inode *yaffs_iget(struct super_block *sb, unsigned long ino) -+{ -+ struct inode *inode; -+ yaffs_obj_t *obj; -+ yaffs_dev_t *dev = yaffs_SuperToDevice(sb); -+ -+ T(YAFFS_TRACE_OS, -+ (TSTR("yaffs_iget for %lu\n"), ino)); -+ -+ inode = iget_locked(sb, ino); -+ if (!inode) -+ return ERR_PTR(-ENOMEM); -+ if (!(inode->i_state & I_NEW)) -+ return inode; -+ -+ /* NB This is called as a side effect of other functions, but -+ * we had to release the lock to prevent deadlocks, so -+ * need to lock again. -+ */ -+ -+ yaffs_gross_lock(dev); -+ -+ obj = yaffs_find_by_number(dev, inode->i_ino); -+ -+ yaffs_fill_inode_from_obj(inode, obj); -+ -+ yaffs_gross_unlock(dev); -+ -+ unlock_new_inode(inode); -+ return inode; -+} -+ -+#else -+ -+static void yaffs_read_inode(struct inode *inode) -+{ -+ /* NB This is called as a side effect of other functions, but -+ * we had to release the lock to prevent deadlocks, so -+ * need to lock again. -+ */ -+ -+ yaffs_obj_t *obj; -+ yaffs_dev_t *dev = yaffs_SuperToDevice(inode->i_sb); -+ -+ T(YAFFS_TRACE_OS, -+ (TSTR("yaffs_read_inode for %d\n"), (int)inode->i_ino)); -+ -+ if(current != yaffs_dev_to_lc(dev)->readdirProcess) -+ yaffs_gross_lock(dev); -+ -+ obj = yaffs_find_by_number(dev, inode->i_ino); -+ -+ yaffs_fill_inode_from_obj(inode, obj); -+ -+ if(current != yaffs_dev_to_lc(dev)->readdirProcess) -+ yaffs_gross_unlock(dev); -+} -+ -+#endif -+ -+static YLIST_HEAD(yaffs_context_list); -+struct semaphore yaffs_context_lock; -+ -+static void yaffs_put_super(struct super_block *sb) -+{ -+ yaffs_dev_t *dev = yaffs_SuperToDevice(sb); -+ -+ T(YAFFS_TRACE_OS, (TSTR("yaffs_put_super\n"))); -+ -+ T(YAFFS_TRACE_OS | YAFFS_TRACE_BACKGROUND, -+ (TSTR("Shutting down yaffs background thread\n"))); -+ yaffs_bg_stop(dev); -+ T(YAFFS_TRACE_OS | YAFFS_TRACE_BACKGROUND, -+ (TSTR("yaffs background thread shut down\n"))); -+ -+ yaffs_gross_lock(dev); -+ -+ yaffs_flush_super(sb,1); -+ -+ if (yaffs_dev_to_lc(dev)->putSuperFunc) -+ yaffs_dev_to_lc(dev)->putSuperFunc(sb); -+ -+ -+ yaffs_deinitialise(dev); -+ -+ yaffs_gross_unlock(dev); -+ -+ down(&yaffs_context_lock); -+ ylist_del_init(&(yaffs_dev_to_lc(dev)->contextList)); -+ up(&yaffs_context_lock); -+ -+ if (yaffs_dev_to_lc(dev)->spareBuffer) { -+ YFREE(yaffs_dev_to_lc(dev)->spareBuffer); -+ yaffs_dev_to_lc(dev)->spareBuffer = NULL; -+ } -+ -+ kfree(dev); -+} -+ -+ -+static void yaffs_MTDPutSuper(struct super_block *sb) -+{ -+ struct mtd_info *mtd = yaffs_dev_to_mtd(yaffs_SuperToDevice(sb)); -+ -+ if (mtd->sync) -+ mtd->sync(mtd); -+ -+ put_mtd_device(mtd); -+} -+ -+ -+static void yaffs_touch_super(yaffs_dev_t *dev) -+{ -+ struct super_block *sb = yaffs_dev_to_lc(dev)->superBlock; -+ -+ T(YAFFS_TRACE_OS, (TSTR("yaffs_touch_super() sb = %p\n"), sb)); -+ if (sb) -+ sb->s_dirt = 1; -+} -+ -+typedef struct { -+ int inband_tags; -+ int skip_checkpoint_read; -+ int skip_checkpoint_write; -+ int no_cache; -+ int tags_ecc_on; -+ int tags_ecc_overridden; -+ int lazy_loading_enabled; -+ int lazy_loading_overridden; -+ int empty_lost_and_found; -+ int empty_lost_and_found_overridden; -+} yaffs_options; -+ -+#define MAX_OPT_LEN 30 -+static int yaffs_parse_options(yaffs_options *options, const char *options_str) -+{ -+ char cur_opt[MAX_OPT_LEN + 1]; -+ int p; -+ int error = 0; -+ -+ /* Parse through the options which is a comma seperated list */ -+ -+ while (options_str && *options_str && !error) { -+ memset(cur_opt, 0, MAX_OPT_LEN + 1); -+ p = 0; -+ -+ while(*options_str == ',') -+ options_str++; -+ -+ while (*options_str && *options_str != ',') { -+ if (p < MAX_OPT_LEN) { -+ cur_opt[p] = *options_str; -+ p++; -+ } -+ options_str++; -+ } -+ -+ if (!strcmp(cur_opt, "inband-tags")) -+ options->inband_tags = 1; -+ else if (!strcmp(cur_opt, "tags-ecc-off")){ -+ options->tags_ecc_on = 0; -+ options->tags_ecc_overridden=1; -+ } else if (!strcmp(cur_opt, "tags-ecc-on")){ -+ options->tags_ecc_on = 1; -+ options->tags_ecc_overridden = 1; -+ } else if (!strcmp(cur_opt, "lazy-loading-off")){ -+ options->lazy_loading_enabled = 0; -+ options->lazy_loading_overridden=1; -+ } else if (!strcmp(cur_opt, "lazy-loading-on")){ -+ options->lazy_loading_enabled = 1; -+ options->lazy_loading_overridden = 1; -+ } else if (!strcmp(cur_opt, "empty-lost-and-found-off")){ -+ options->empty_lost_and_found = 0; -+ options->empty_lost_and_found_overridden=1; -+ } else if (!strcmp(cur_opt, "empty-lost-and-found-on")){ -+ options->empty_lost_and_found = 1; -+ options->empty_lost_and_found_overridden=1; -+ } else if (!strcmp(cur_opt, "no-cache")) -+ options->no_cache = 1; -+ else if (!strcmp(cur_opt, "no-checkpoint-read")) -+ options->skip_checkpoint_read = 1; -+ else if (!strcmp(cur_opt, "no-checkpoint-write")) -+ options->skip_checkpoint_write = 1; -+ else if (!strcmp(cur_opt, "no-checkpoint")) { -+ options->skip_checkpoint_read = 1; -+ options->skip_checkpoint_write = 1; -+ } else { -+ printk(KERN_INFO "yaffs: Bad mount option \"%s\"\n", -+ cur_opt); -+ error = 1; -+ } -+ } -+ -+ return error; -+} -+ -+static struct super_block *yaffs_internal_read_super(int yaffs_version, -+ struct super_block *sb, -+ void *data, int silent) -+{ -+ int nBlocks; -+ struct inode *inode = NULL; -+ struct dentry *root; -+ yaffs_dev_t *dev = 0; -+ char devname_buf[BDEVNAME_SIZE + 1]; -+ struct mtd_info *mtd; -+ int err; -+ char *data_str = (char *)data; -+ struct yaffs_LinuxContext *context = NULL; -+ yaffs_param_t *param; -+ -+ int read_only = 0; -+ -+ yaffs_options options; -+ -+ unsigned mount_id; -+ int found; -+ struct yaffs_LinuxContext *context_iterator; -+ struct ylist_head *l; -+ -+ sb->s_magic = YAFFS_MAGIC; -+ sb->s_op = &yaffs_super_ops; -+ sb->s_flags |= MS_NOATIME; -+ -+ read_only =((sb->s_flags & MS_RDONLY) != 0); -+ -+ -+#ifdef YAFFS_COMPILE_EXPORTFS -+ sb->s_export_op = &yaffs_export_ops; -+#endif -+ -+ if (!sb) -+ printk(KERN_INFO "yaffs: sb is NULL\n"); -+ else if (!sb->s_dev) -+ printk(KERN_INFO "yaffs: sb->s_dev is NULL\n"); -+ else if (!yaffs_devname(sb, devname_buf)) -+ printk(KERN_INFO "yaffs: devname is NULL\n"); -+ else -+ printk(KERN_INFO "yaffs: dev is %d name is \"%s\" %s\n", -+ sb->s_dev, -+ yaffs_devname(sb, devname_buf), -+ read_only ? "ro" : "rw"); -+ -+ if (!data_str) -+ data_str = ""; -+ -+ printk(KERN_INFO "yaffs: passed flags \"%s\"\n", data_str); -+ -+ memset(&options, 0, sizeof(options)); -+ -+ if (yaffs_parse_options(&options, data_str)) { -+ /* Option parsing failed */ -+ return NULL; -+ } -+ -+ -+ sb->s_blocksize = PAGE_CACHE_SIZE; -+ sb->s_blocksize_bits = PAGE_CACHE_SHIFT; -+ -+ T(YAFFS_TRACE_OS, -+ (TSTR("yaffs_read_super: Using yaffs%d\n"), yaffs_version)); -+ T(YAFFS_TRACE_OS, -+ (TSTR("yaffs_read_super: block size %d\n"), -+ (int)(sb->s_blocksize))); -+ -+ T(YAFFS_TRACE_ALWAYS, -+ (TSTR("yaffs: Attempting MTD mount of %u.%u,\"%s\"\n"), -+ MAJOR(sb->s_dev), MINOR(sb->s_dev), -+ yaffs_devname(sb, devname_buf))); -+ -+ /* Check it's an mtd device..... */ -+ if (MAJOR(sb->s_dev) != MTD_BLOCK_MAJOR) -+ return NULL; /* This isn't an mtd device */ -+ -+ /* Get the device */ -+ mtd = get_mtd_device(NULL, MINOR(sb->s_dev)); -+ if (!mtd) { -+ T(YAFFS_TRACE_ALWAYS, -+ (TSTR("yaffs: MTD device #%u doesn't appear to exist\n"), -+ MINOR(sb->s_dev))); -+ return NULL; -+ } -+ /* Check it's NAND */ -+ if (mtd->type != MTD_NANDFLASH) { -+ T(YAFFS_TRACE_ALWAYS, -+ (TSTR("yaffs: MTD device is not NAND it's type %d\n"), -+ mtd->type)); -+ return NULL; -+ } -+ -+ T(YAFFS_TRACE_OS, (TSTR(" erase %p\n"), mtd->erase)); -+ T(YAFFS_TRACE_OS, (TSTR(" read %p\n"), mtd->read)); -+ T(YAFFS_TRACE_OS, (TSTR(" write %p\n"), mtd->write)); -+ T(YAFFS_TRACE_OS, (TSTR(" readoob %p\n"), mtd->read_oob)); -+ T(YAFFS_TRACE_OS, (TSTR(" writeoob %p\n"), mtd->write_oob)); -+ T(YAFFS_TRACE_OS, (TSTR(" block_isbad %p\n"), mtd->block_isbad)); -+ T(YAFFS_TRACE_OS, (TSTR(" block_markbad %p\n"), mtd->block_markbad)); -+ T(YAFFS_TRACE_OS, (TSTR(" %s %d\n"), WRITE_SIZE_STR, WRITE_SIZE(mtd))); -+ T(YAFFS_TRACE_OS, (TSTR(" oobsize %d\n"), mtd->oobsize)); -+ T(YAFFS_TRACE_OS, (TSTR(" erasesize %d\n"), mtd->erasesize)); -+#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 29) -+ T(YAFFS_TRACE_OS, (TSTR(" size %u\n"), mtd->size)); -+#else -+ T(YAFFS_TRACE_OS, (TSTR(" size %lld\n"), mtd->size)); -+#endif -+ -+#ifdef CONFIG_YAFFS_AUTO_YAFFS2 -+ -+ if (yaffs_version == 1 && WRITE_SIZE(mtd) >= 2048) { -+ T(YAFFS_TRACE_ALWAYS, -+ (TSTR("yaffs: auto selecting yaffs2\n"))); -+ yaffs_version = 2; -+ } -+ -+ /* Added NCB 26/5/2006 for completeness */ -+ if (yaffs_version == 2 && !options.inband_tags && WRITE_SIZE(mtd) == 512) { -+ T(YAFFS_TRACE_ALWAYS, -+ (TSTR("yaffs: auto selecting yaffs1\n"))); -+ yaffs_version = 1; -+ } -+ -+#endif -+ -+ if (yaffs_version == 2) { -+ /* Check for version 2 style functions */ -+ if (!mtd->erase || -+ !mtd->block_isbad || -+ !mtd->block_markbad || -+ !mtd->read || -+ !mtd->write || -+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) -+ !mtd->read_oob || !mtd->write_oob) { -+#else -+ !mtd->write_ecc || -+ !mtd->read_ecc || !mtd->read_oob || !mtd->write_oob) { -+#endif -+ T(YAFFS_TRACE_ALWAYS, -+ (TSTR("yaffs: MTD device does not support required " -+ "functions\n"))); -+ return NULL; -+ } -+ -+ if ((WRITE_SIZE(mtd) < YAFFS_MIN_YAFFS2_CHUNK_SIZE || -+ mtd->oobsize < YAFFS_MIN_YAFFS2_SPARE_SIZE) && -+ !options.inband_tags) { -+ T(YAFFS_TRACE_ALWAYS, -+ (TSTR("yaffs: MTD device does not have the " -+ "right page sizes\n"))); -+ return NULL; -+ } -+ } else { -+ /* Check for V1 style functions */ -+ if (!mtd->erase || -+ !mtd->read || -+ !mtd->write || -+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) -+ !mtd->read_oob || !mtd->write_oob) { -+#else -+ !mtd->write_ecc || -+ !mtd->read_ecc || !mtd->read_oob || !mtd->write_oob) { -+#endif -+ T(YAFFS_TRACE_ALWAYS, -+ (TSTR("yaffs: MTD device does not support required " -+ "functions\n"))); -+ return NULL; -+ } -+ -+ if (WRITE_SIZE(mtd) < YAFFS_BYTES_PER_CHUNK || -+ mtd->oobsize != YAFFS_BYTES_PER_SPARE) { -+ T(YAFFS_TRACE_ALWAYS, -+ (TSTR("yaffs: MTD device does not support have the " -+ "right page sizes\n"))); -+ return NULL; -+ } -+ } -+ -+ /* OK, so if we got here, we have an MTD that's NAND and looks -+ * like it has the right capabilities -+ * Set the yaffs_dev_t up for mtd -+ */ -+ -+ if (!read_only && !(mtd->flags & MTD_WRITEABLE)){ -+ read_only = 1; -+ printk(KERN_INFO "yaffs: mtd is read only, setting superblock read only"); -+ sb->s_flags |= MS_RDONLY; -+ } -+ -+ dev = kmalloc(sizeof(yaffs_dev_t), GFP_KERNEL); -+ context = kmalloc(sizeof(struct yaffs_LinuxContext),GFP_KERNEL); -+ -+ if(!dev || !context ){ -+ if(dev) -+ kfree(dev); -+ if(context) -+ kfree(context); -+ dev = NULL; -+ context = NULL; -+ } -+ -+ if (!dev) { -+ /* Deep shit could not allocate device structure */ -+ T(YAFFS_TRACE_ALWAYS, -+ (TSTR("yaffs_read_super: Failed trying to allocate " -+ "yaffs_dev_t. \n"))); -+ return NULL; -+ } -+ memset(dev, 0, sizeof(yaffs_dev_t)); -+ param = &(dev->param); -+ -+ memset(context,0,sizeof(struct yaffs_LinuxContext)); -+ dev->os_context = context; -+ YINIT_LIST_HEAD(&(context->contextList)); -+ context->dev = dev; -+ context->superBlock = sb; -+ -+ dev->read_only = read_only; -+ -+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) -+ sb->s_fs_info = dev; -+#else -+ sb->u.generic_sbp = dev; -+#endif -+ -+ dev->driver_context = mtd; -+ param->name = mtd->name; -+ -+ /* Set up the memory size parameters.... */ -+ -+ nBlocks = YCALCBLOCKS(mtd->size, (YAFFS_CHUNKS_PER_BLOCK * YAFFS_BYTES_PER_CHUNK)); -+ -+ param->start_block = 0; -+ param->end_block = nBlocks - 1; -+ param->chunks_per_block = YAFFS_CHUNKS_PER_BLOCK; -+ param->total_bytes_per_chunk = YAFFS_BYTES_PER_CHUNK; -+ param->n_reserved_blocks = 5; -+ param->n_caches = (options.no_cache) ? 0 : 10; -+ param->inband_tags = options.inband_tags; -+ -+#ifdef CONFIG_YAFFS_DISABLE_LAZY_LOAD -+ param->disable_lazy_load = 1; -+#endif -+#ifdef CONFIG_YAFFS_XATTR -+ param->enable_xattr = 1; -+#endif -+ if(options.lazy_loading_overridden) -+ param->disable_lazy_load = !options.lazy_loading_enabled; -+ -+#ifdef CONFIG_YAFFS_DISABLE_TAGS_ECC -+ param->no_tags_ecc = 1; -+#endif -+ -+#ifdef CONFIG_YAFFS_DISABLE_BACKGROUND -+#else -+ param->defered_dir_update = 1; -+#endif -+ -+ if(options.tags_ecc_overridden) -+ param->no_tags_ecc = !options.tags_ecc_on; -+ -+#ifdef CONFIG_YAFFS_EMPTY_LOST_AND_FOUND -+ param->empty_lost_n_found = 1; -+#endif -+ -+#ifdef CONFIG_YAFFS_DISABLE_BLOCK_REFRESHING -+ param->refresh_period = 0; -+#else -+ param->refresh_period = 500; -+#endif -+ -+#ifdef CONFIG_YAFFS__ALWAYS_CHECK_CHUNK_ERASED -+ param->always_check_erased = 1; -+#endif -+ -+ if(options.empty_lost_and_found_overridden) -+ param->empty_lost_n_found = options.empty_lost_and_found; -+ -+ /* ... and the functions. */ -+ if (yaffs_version == 2) { -+ param->write_chunk_tags_fn = -+ nandmtd2_WriteChunkWithTagsToNAND; -+ param->read_chunk_tags_fn = -+ nandmtd2_ReadChunkWithTagsFromNAND; -+ param->bad_block_fn = nandmtd2_MarkNANDBlockBad; -+ param->query_block_fn = nandmtd2_QueryNANDBlock; -+ yaffs_dev_to_lc(dev)->spareBuffer = YMALLOC(mtd->oobsize); -+ param->is_yaffs2 = 1; -+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) -+ param->total_bytes_per_chunk = mtd->writesize; -+ param->chunks_per_block = mtd->erasesize / mtd->writesize; -+#else -+ param->total_bytes_per_chunk = mtd->oobblock; -+ param->chunks_per_block = mtd->erasesize / mtd->oobblock; -+#endif -+ nBlocks = YCALCBLOCKS(mtd->size, mtd->erasesize); -+ -+ param->start_block = 0; -+ param->end_block = nBlocks - 1; -+ } else { -+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) -+ /* use the MTD interface in yaffs_mtdif1.c */ -+ param->write_chunk_tags_fn = -+ nandmtd1_WriteChunkWithTagsToNAND; -+ param->read_chunk_tags_fn = -+ nandmtd1_ReadChunkWithTagsFromNAND; -+ param->bad_block_fn = nandmtd1_MarkNANDBlockBad; -+ param->query_block_fn = nandmtd1_QueryNANDBlock; -+#else -+ param->write_chunk_fn = nandmtd_WriteChunkToNAND; -+ param->read_chunk_fn = nandmtd_ReadChunkFromNAND; -+#endif -+ param->is_yaffs2 = 0; -+ } -+ /* ... and common functions */ -+ param->erase_fn = nandmtd_EraseBlockInNAND; -+ param->initialise_flash_fn = nandmtd_InitialiseNAND; -+ -+ yaffs_dev_to_lc(dev)->putSuperFunc = yaffs_MTDPutSuper; -+ -+ param->sb_dirty_fn = yaffs_touch_super; -+ param->gc_control = yaffs_gc_control_callback; -+ -+ yaffs_dev_to_lc(dev)->superBlock= sb; -+ -+ -+#ifndef CONFIG_YAFFS_DOES_ECC -+ param->use_nand_ecc = 1; -+#endif -+ -+#ifdef CONFIG_YAFFS_DISABLE_WIDE_TNODES -+ param->wide_tnodes_disabled = 1; -+#endif -+ -+ param->skip_checkpt_rd = options.skip_checkpoint_read; -+ param->skip_checkpt_wr = options.skip_checkpoint_write; -+ -+ down(&yaffs_context_lock); -+ /* Get a mount id */ -+ found = 0; -+ for(mount_id=0; ! found; mount_id++){ -+ found = 1; -+ ylist_for_each(l,&yaffs_context_list){ -+ context_iterator = ylist_entry(l,struct yaffs_LinuxContext,contextList); -+ if(context_iterator->mount_id == mount_id) -+ found = 0; -+ } -+ } -+ context->mount_id = mount_id; -+ -+ ylist_add_tail(&(yaffs_dev_to_lc(dev)->contextList), &yaffs_context_list); -+ up(&yaffs_context_lock); -+ -+ /* Directory search handling...*/ -+ YINIT_LIST_HEAD(&(yaffs_dev_to_lc(dev)->searchContexts)); -+ param->remove_obj_fn = yaffs_remove_obj_callback; -+ -+ init_MUTEX(&(yaffs_dev_to_lc(dev)->grossLock)); -+ -+ yaffs_gross_lock(dev); -+ -+ err = yaffs_guts_initialise(dev); -+ -+ T(YAFFS_TRACE_OS, -+ (TSTR("yaffs_read_super: guts initialised %s\n"), -+ (err == YAFFS_OK) ? "OK" : "FAILED")); -+ -+ if(err == YAFFS_OK) -+ yaffs_bg_start(dev); -+ -+ if(!context->bgThread) -+ param->defered_dir_update = 0; -+ -+ -+ /* Release lock before yaffs_get_inode() */ -+ yaffs_gross_unlock(dev); -+ -+ /* Create root inode */ -+ if (err == YAFFS_OK) -+ inode = yaffs_get_inode(sb, S_IFDIR | 0755, 0, -+ yaffs_root(dev)); -+ -+ if (!inode) -+ return NULL; -+ -+ inode->i_op = &yaffs_dir_inode_operations; -+ inode->i_fop = &yaffs_dir_operations; -+ -+ T(YAFFS_TRACE_OS, (TSTR("yaffs_read_super: got root inode\n"))); -+ -+ root = d_alloc_root(inode); -+ -+ T(YAFFS_TRACE_OS, (TSTR("yaffs_read_super: d_alloc_root done\n"))); -+ -+ if (!root) { -+ iput(inode); -+ return NULL; -+ } -+ sb->s_root = root; -+ sb->s_dirt = !dev->is_checkpointed; -+ T(YAFFS_TRACE_ALWAYS, -+ (TSTR("yaffs_read_super: is_checkpointed %d\n"), -+ dev->is_checkpointed)); -+ -+ T(YAFFS_TRACE_OS, (TSTR("yaffs_read_super: done\n"))); -+ return sb; -+} -+ -+ -+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) -+static int yaffs_internal_read_super_mtd(struct super_block *sb, void *data, -+ int silent) -+{ -+ return yaffs_internal_read_super(1, sb, data, silent) ? 0 : -EINVAL; -+} -+ -+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) -+static int yaffs_read_super(struct file_system_type *fs, -+ int flags, const char *dev_name, -+ void *data, struct vfsmount *mnt) -+{ -+ -+ return get_sb_bdev(fs, flags, dev_name, data, -+ yaffs_internal_read_super_mtd, mnt); -+} -+#else -+static struct super_block *yaffs_read_super(struct file_system_type *fs, -+ int flags, const char *dev_name, -+ void *data) -+{ -+ -+ return get_sb_bdev(fs, flags, dev_name, data, -+ yaffs_internal_read_super_mtd); -+} -+#endif -+ -+static struct file_system_type yaffs_fs_type = { -+ .owner = THIS_MODULE, -+ .name = "yaffs", -+ .get_sb = yaffs_read_super, -+ .kill_sb = kill_block_super, -+ .fs_flags = FS_REQUIRES_DEV, -+}; -+#else -+static struct super_block *yaffs_read_super(struct super_block *sb, void *data, -+ int silent) -+{ -+ return yaffs_internal_read_super(1, sb, data, silent); -+} -+ -+static DECLARE_FSTYPE(yaffs_fs_type, "yaffs", yaffs_read_super, -+ FS_REQUIRES_DEV); -+#endif -+ -+ -+#ifdef CONFIG_YAFFS_YAFFS2 -+ -+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) -+static int yaffs2_internal_read_super_mtd(struct super_block *sb, void *data, -+ int silent) -+{ -+ return yaffs_internal_read_super(2, sb, data, silent) ? 0 : -EINVAL; -+} -+ -+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) -+static int yaffs2_read_super(struct file_system_type *fs, -+ int flags, const char *dev_name, void *data, -+ struct vfsmount *mnt) -+{ -+ return get_sb_bdev(fs, flags, dev_name, data, -+ yaffs2_internal_read_super_mtd, mnt); -+} -+#else -+static struct super_block *yaffs2_read_super(struct file_system_type *fs, -+ int flags, const char *dev_name, -+ void *data) -+{ -+ -+ return get_sb_bdev(fs, flags, dev_name, data, -+ yaffs2_internal_read_super_mtd); -+} -+#endif -+ -+static struct file_system_type yaffs2_fs_type = { -+ .owner = THIS_MODULE, -+ .name = "yaffs2", -+ .get_sb = yaffs2_read_super, -+ .kill_sb = kill_block_super, -+ .fs_flags = FS_REQUIRES_DEV, -+}; -+#else -+static struct super_block *yaffs2_read_super(struct super_block *sb, -+ void *data, int silent) -+{ -+ return yaffs_internal_read_super(2, sb, data, silent); -+} -+ -+static DECLARE_FSTYPE(yaffs2_fs_type, "yaffs2", yaffs2_read_super, -+ FS_REQUIRES_DEV); -+#endif -+ -+#endif /* CONFIG_YAFFS_YAFFS2 */ -+ -+static struct proc_dir_entry *my_proc_entry; -+static struct proc_dir_entry *debug_proc_entry; -+ -+static char *yaffs_dump_dev_part0(char *buf, yaffs_dev_t * dev) -+{ -+ buf += sprintf(buf, "start_block.......... %d\n", dev->param.start_block); -+ buf += sprintf(buf, "end_block............ %d\n", dev->param.end_block); -+ buf += sprintf(buf, "total_bytes_per_chunk %d\n", dev->param.total_bytes_per_chunk); -+ buf += sprintf(buf, "use_nand_ecc......... %d\n", dev->param.use_nand_ecc); -+ buf += sprintf(buf, "no_tags_ecc.......... %d\n", dev->param.no_tags_ecc); -+ buf += sprintf(buf, "is_yaffs2............ %d\n", dev->param.is_yaffs2); -+ buf += sprintf(buf, "inband_tags.......... %d\n", dev->param.inband_tags); -+ buf += sprintf(buf, "empty_lost_n_found... %d\n", dev->param.empty_lost_n_found); -+ buf += sprintf(buf, "disable_lazy_load.... %d\n", dev->param.disable_lazy_load); -+ buf += sprintf(buf, "refresh_period....... %d\n", dev->param.refresh_period); -+ buf += sprintf(buf, "n_caches............. %d\n", dev->param.n_caches); -+ buf += sprintf(buf, "n_reserved_blocks.... %d\n", dev->param.n_reserved_blocks); -+ buf += sprintf(buf, "always_check_erased.. %d\n", dev->param.always_check_erased); -+ -+ buf += sprintf(buf, "\n"); -+ -+ return buf; -+} -+ -+ -+static char *yaffs_dump_dev_part1(char *buf, yaffs_dev_t * dev) -+{ -+ buf += sprintf(buf, "data_bytes_per_chunk. %d\n", dev->data_bytes_per_chunk); -+ buf += sprintf(buf, "chunk_grp_bits....... %d\n", dev->chunk_grp_bits); -+ buf += sprintf(buf, "chunk_grp_size....... %d\n", dev->chunk_grp_size); -+ buf += sprintf(buf, "n_erased_blocks...... %d\n", dev->n_erased_blocks); -+ buf += sprintf(buf, "blocks_in_checkpt.... %d\n", dev->blocks_in_checkpt); -+ buf += sprintf(buf, "\n"); -+ buf += sprintf(buf, "n_tnodes............. %d\n", dev->n_tnodes); -+ buf += sprintf(buf, "n_obj................ %d\n", dev->n_obj); -+ buf += sprintf(buf, "n_free_chunks........ %d\n", dev->n_free_chunks); -+ buf += sprintf(buf, "\n"); -+ buf += sprintf(buf, "n_page_writes........ %u\n", dev->n_page_writes); -+ buf += sprintf(buf, "n_page_reads......... %u\n", dev->n_page_reads); -+ buf += sprintf(buf, "n_erasures........... %u\n", dev->n_erasures); -+ buf += sprintf(buf, "n_gc_copies.......... %u\n", dev->n_gc_copies); -+ buf += sprintf(buf, "all_gcs.............. %u\n", dev->all_gcs); -+ buf += sprintf(buf, "passive_gc_count..... %u\n", dev->passive_gc_count); -+ buf += sprintf(buf, "oldest_dirty_gc_count %u\n", dev->oldest_dirty_gc_count); -+ buf += sprintf(buf, "n_gc_blocks.......... %u\n", dev->n_gc_blocks); -+ buf += sprintf(buf, "bg_gcs............... %u\n", dev->bg_gcs); -+ buf += sprintf(buf, "n_retired_writes..... %u\n", dev->n_retired_writes); -+ buf += sprintf(buf, "nRetireBlocks........ %u\n", dev->n_retired_blocks); -+ buf += sprintf(buf, "n_ecc_fixed.......... %u\n", dev->n_ecc_fixed); -+ buf += sprintf(buf, "n_ecc_unfixed........ %u\n", dev->n_ecc_unfixed); -+ buf += sprintf(buf, "n_tags_ecc_fixed..... %u\n", dev->n_tags_ecc_fixed); -+ buf += sprintf(buf, "n_tags_ecc_unfixed... %u\n", dev->n_tags_ecc_unfixed); -+ buf += sprintf(buf, "cache_hits........... %u\n", dev->cache_hits); -+ buf += sprintf(buf, "n_deleted_files...... %u\n", dev->n_deleted_files); -+ buf += sprintf(buf, "n_unlinked_files..... %u\n", dev->n_unlinked_files); -+ buf += sprintf(buf, "refresh_count........ %u\n", dev->refresh_count); -+ buf += sprintf(buf, "n_bg_deletions....... %u\n", dev->n_bg_deletions); -+ -+ return buf; -+} -+ -+static int yaffs_proc_read(char *page, -+ char **start, -+ off_t offset, int count, int *eof, void *data) -+{ -+ struct ylist_head *item; -+ char *buf = page; -+ int step = offset; -+ int n = 0; -+ -+ /* Get proc_file_read() to step 'offset' by one on each sucessive call. -+ * We use 'offset' (*ppos) to indicate where we are in dev_list. -+ * This also assumes the user has posted a read buffer large -+ * enough to hold the complete output; but that's life in /proc. -+ */ -+ -+ *(int *)start = 1; -+ -+ /* Print header first */ -+ if (step == 0) -+ buf += sprintf(buf, "Multi-version YAFFS built:" __DATE__ " " __TIME__"\n"); -+ else if (step == 1) -+ buf += sprintf(buf,"\n"); -+ else { -+ step-=2; -+ -+ down(&yaffs_context_lock); -+ -+ /* Locate and print the Nth entry. Order N-squared but N is small. */ -+ ylist_for_each(item, &yaffs_context_list) { -+ struct yaffs_LinuxContext *dc = ylist_entry(item, struct yaffs_LinuxContext, contextList); -+ yaffs_dev_t *dev = dc->dev; -+ -+ if (n < (step & ~1)) { -+ n+=2; -+ continue; -+ } -+ if((step & 1)==0){ -+ buf += sprintf(buf, "\nDevice %d \"%s\"\n", n, dev->param.name); -+ buf = yaffs_dump_dev_part0(buf, dev); -+ } else -+ buf = yaffs_dump_dev_part1(buf, dev); -+ -+ break; -+ } -+ up(&yaffs_context_lock); -+ } -+ -+ return buf - page < count ? buf - page : count; -+} -+ -+static int yaffs_stats_proc_read(char *page, -+ char **start, -+ off_t offset, int count, int *eof, void *data) -+{ -+ struct ylist_head *item; -+ char *buf = page; -+ int n = 0; -+ -+ down(&yaffs_context_lock); -+ -+ /* Locate and print the Nth entry. Order N-squared but N is small. */ -+ ylist_for_each(item, &yaffs_context_list) { -+ struct yaffs_LinuxContext *dc = ylist_entry(item, struct yaffs_LinuxContext, contextList); -+ yaffs_dev_t *dev = dc->dev; -+ -+ int erasedChunks; -+ -+ erasedChunks = dev->n_erased_blocks * dev->param.chunks_per_block; -+ -+ buf += sprintf(buf,"%d, %d, %d, %u, %u, %u, %u\n", -+ n, dev->n_free_chunks, erasedChunks, -+ dev->bg_gcs, dev->oldest_dirty_gc_count, -+ dev->n_obj, dev->n_tnodes); -+ } -+ up(&yaffs_context_lock); -+ -+ -+ return buf - page < count ? buf - page : count; -+} -+ -+/** -+ * Set the verbosity of the warnings and error messages. -+ * -+ * Note that the names can only be a..z or _ with the current code. -+ */ -+ -+static struct { -+ char *mask_name; -+ unsigned mask_bitfield; -+} mask_flags[] = { -+ {"allocate", YAFFS_TRACE_ALLOCATE}, -+ {"always", YAFFS_TRACE_ALWAYS}, -+ {"background", YAFFS_TRACE_BACKGROUND}, -+ {"bad_blocks", YAFFS_TRACE_BAD_BLOCKS}, -+ {"buffers", YAFFS_TRACE_BUFFERS}, -+ {"bug", YAFFS_TRACE_BUG}, -+ {"checkpt", YAFFS_TRACE_CHECKPOINT}, -+ {"deletion", YAFFS_TRACE_DELETION}, -+ {"erase", YAFFS_TRACE_ERASE}, -+ {"error", YAFFS_TRACE_ERROR}, -+ {"gc_detail", YAFFS_TRACE_GC_DETAIL}, -+ {"gc", YAFFS_TRACE_GC}, -+ {"lock", YAFFS_TRACE_LOCK}, -+ {"mtd", YAFFS_TRACE_MTD}, -+ {"nandaccess", YAFFS_TRACE_NANDACCESS}, -+ {"os", YAFFS_TRACE_OS}, -+ {"scan_debug", YAFFS_TRACE_SCAN_DEBUG}, -+ {"scan", YAFFS_TRACE_SCAN}, -+ {"tracing", YAFFS_TRACE_TRACING}, -+ {"sync", YAFFS_TRACE_SYNC}, -+ {"write", YAFFS_TRACE_WRITE}, -+ -+ {"verify", YAFFS_TRACE_VERIFY}, -+ {"verify_nand", YAFFS_TRACE_VERIFY_NAND}, -+ {"verify_full", YAFFS_TRACE_VERIFY_FULL}, -+ {"verify_all", YAFFS_TRACE_VERIFY_ALL}, -+ -+ {"all", 0xffffffff}, -+ {"none", 0}, -+ {NULL, 0}, -+}; -+ -+#define MAX_MASK_NAME_LENGTH 40 -+static int yaffs_proc_write_trace_options(struct file *file, const char *buf, -+ unsigned long count, void *data) -+{ -+ unsigned rg = 0, mask_bitfield; -+ char *end; -+ char *mask_name; -+ const char *x; -+ char substring[MAX_MASK_NAME_LENGTH + 1]; -+ int i; -+ int done = 0; -+ int add, len = 0; -+ int pos = 0; -+ -+ rg = yaffs_trace_mask; -+ -+ while (!done && (pos < count)) { -+ done = 1; -+ while ((pos < count) && isspace(buf[pos])) -+ pos++; -+ -+ switch (buf[pos]) { -+ case '+': -+ case '-': -+ case '=': -+ add = buf[pos]; -+ pos++; -+ break; -+ -+ default: -+ add = ' '; -+ break; -+ } -+ mask_name = NULL; -+ -+ mask_bitfield = simple_strtoul(buf + pos, &end, 0); -+ -+ if (end > buf + pos) { -+ mask_name = "numeral"; -+ len = end - (buf + pos); -+ pos += len; -+ done = 0; -+ } else { -+ for (x = buf + pos, i = 0; -+ (*x == '_' || (*x >= 'a' && *x <= 'z')) && -+ i < MAX_MASK_NAME_LENGTH; x++, i++, pos++) -+ substring[i] = *x; -+ substring[i] = '\0'; -+ -+ for (i = 0; mask_flags[i].mask_name != NULL; i++) { -+ if (strcmp(substring, mask_flags[i].mask_name) == 0) { -+ mask_name = mask_flags[i].mask_name; -+ mask_bitfield = mask_flags[i].mask_bitfield; -+ done = 0; -+ break; -+ } -+ } -+ } -+ -+ if (mask_name != NULL) { -+ done = 0; -+ switch (add) { -+ case '-': -+ rg &= ~mask_bitfield; -+ break; -+ case '+': -+ rg |= mask_bitfield; -+ break; -+ case '=': -+ rg = mask_bitfield; -+ break; -+ default: -+ rg |= mask_bitfield; -+ break; -+ } -+ } -+ } -+ -+ yaffs_trace_mask = rg | YAFFS_TRACE_ALWAYS; -+ -+ printk(KERN_DEBUG "new trace = 0x%08X\n", yaffs_trace_mask); -+ -+ if (rg & YAFFS_TRACE_ALWAYS) { -+ for (i = 0; mask_flags[i].mask_name != NULL; i++) { -+ char flag; -+ flag = ((rg & mask_flags[i].mask_bitfield) == -+ mask_flags[i].mask_bitfield) ? '+' : '-'; -+ printk(KERN_DEBUG "%c%s\n", flag, mask_flags[i].mask_name); -+ } -+ } -+ -+ return count; -+} -+ -+ -+static int yaffs_proc_write(struct file *file, const char *buf, -+ unsigned long count, void *data) -+{ -+ return yaffs_proc_write_trace_options(file, buf, count, data); -+} -+ -+/* Stuff to handle installation of file systems */ -+struct file_system_to_install { -+ struct file_system_type *fst; -+ int installed; -+}; -+ -+static struct file_system_to_install fs_to_install[] = { -+ {&yaffs_fs_type, 0}, -+ {&yaffs2_fs_type, 0}, -+ {NULL, 0} -+}; -+ -+static int __init init_yaffs_fs(void) -+{ -+ int error = 0; -+ struct file_system_to_install *fsinst; -+ -+ T(YAFFS_TRACE_ALWAYS, -+ (TSTR("yaffs built " __DATE__ " " __TIME__ " Installing. \n"))); -+ -+#ifdef CONFIG_YAFFS_ALWAYS_CHECK_CHUNK_ERASED -+ T(YAFFS_TRACE_ALWAYS, -+ (TSTR(" \n\n\n\nYAFFS-WARNING CONFIG_YAFFS_ALWAYS_CHECK_CHUNK_ERASED selected.\n\n\n\n"))); -+#endif -+ -+ -+ -+ -+ init_MUTEX(&yaffs_context_lock); -+ -+ /* Install the proc_fs entries */ -+ my_proc_entry = create_proc_entry("yaffs", -+ S_IRUGO | S_IFREG, -+ YPROC_ROOT); -+ -+ if (my_proc_entry) { -+ my_proc_entry->write_proc = yaffs_proc_write; -+ my_proc_entry->read_proc = yaffs_proc_read; -+ my_proc_entry->data = NULL; -+ } else -+ return -ENOMEM; -+ -+ debug_proc_entry = create_proc_entry("yaffs_stats", -+ S_IRUGO | S_IFREG, -+ YPROC_ROOT); -+ -+ if (debug_proc_entry) { -+ debug_proc_entry->write_proc = NULL; -+ debug_proc_entry->read_proc = yaffs_stats_proc_read; -+ debug_proc_entry->data = NULL; -+ } else -+ return -ENOMEM; -+ -+ /* Now add the file system entries */ -+ -+ fsinst = fs_to_install; -+ -+ while (fsinst->fst && !error) { -+ error = register_filesystem(fsinst->fst); -+ if (!error) -+ fsinst->installed = 1; -+ fsinst++; -+ } -+ -+ /* Any errors? uninstall */ -+ if (error) { -+ fsinst = fs_to_install; -+ -+ while (fsinst->fst) { -+ if (fsinst->installed) { -+ unregister_filesystem(fsinst->fst); -+ fsinst->installed = 0; -+ } -+ fsinst++; -+ } -+ } -+ -+ return error; -+} -+ -+static void __exit exit_yaffs_fs(void) -+{ -+ -+ struct file_system_to_install *fsinst; -+ -+ T(YAFFS_TRACE_ALWAYS, -+ (TSTR("yaffs built " __DATE__ " " __TIME__ " removing. \n"))); -+ -+ remove_proc_entry("yaffs", YPROC_ROOT); -+ remove_proc_entry("yaffs_stats", YPROC_ROOT); -+ -+ fsinst = fs_to_install; -+ -+ while (fsinst->fst) { -+ if (fsinst->installed) { -+ unregister_filesystem(fsinst->fst); -+ fsinst->installed = 0; -+ } -+ fsinst++; -+ } -+} -+ -+module_init(init_yaffs_fs) -+module_exit(exit_yaffs_fs) -+ -+MODULE_DESCRIPTION("YAFFS2 - a NAND specific flash file system"); -+MODULE_AUTHOR("Charles Manning, Aleph One Ltd., 2002-2010"); -+MODULE_LICENSE("GPL"); ---- /dev/null -+++ b/fs/yaffs2/yaffs_yaffs1.c -@@ -0,0 +1,465 @@ -+/* -+ * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. -+ * -+ * Copyright (C) 2002-2010 Aleph One Ltd. -+ * for Toby Churchill Ltd and Brightstar Engineering -+ * -+ * Created by Charles Manning <charles@aleph1.co.uk> -+ * -+ * This program is free software; you can redistribute it and/or modify -+ * it under the terms of the GNU General Public License version 2 as -+ * published by the Free Software Foundation. -+ */ -+#include "yaffs_yaffs1.h" -+#include "yportenv.h" -+#include "yaffs_trace.h" -+#include "yaffs_bitmap.h" -+#include "yaffs_getblockinfo.h" -+#include "yaffs_nand.h" -+ -+ -+int yaffs1_scan(yaffs_dev_t *dev) -+{ -+ yaffs_ext_tags tags; -+ int blk; -+ int blockIterator; -+ int startIterator; -+ int endIterator; -+ int result; -+ -+ int chunk; -+ int c; -+ int deleted; -+ yaffs_block_state_t state; -+ yaffs_obj_t *hard_list = NULL; -+ yaffs_block_info_t *bi; -+ __u32 seq_number; -+ yaffs_obj_header *oh; -+ yaffs_obj_t *in; -+ yaffs_obj_t *parent; -+ -+ int alloc_failed = 0; -+ -+ struct yaffs_shadow_fixer_s *shadowFixerList = NULL; -+ -+ -+ __u8 *chunkData; -+ -+ -+ -+ T(YAFFS_TRACE_SCAN, -+ (TSTR("yaffs1_scan starts intstartblk %d intendblk %d..." TENDSTR), -+ dev->internal_start_block, dev->internal_end_block)); -+ -+ chunkData = yaffs_get_temp_buffer(dev, __LINE__); -+ -+ dev->seq_number = YAFFS_LOWEST_SEQUENCE_NUMBER; -+ -+ /* Scan all the blocks to determine their state */ -+ bi = dev->block_info; -+ for (blk = dev->internal_start_block; blk <= dev->internal_end_block; blk++) { -+ yaffs_clear_chunk_bits(dev, blk); -+ bi->pages_in_use = 0; -+ bi->soft_del_pages = 0; -+ -+ yaffs_query_init_block_state(dev, blk, &state, &seq_number); -+ -+ bi->block_state = state; -+ bi->seq_number = seq_number; -+ -+ if (bi->seq_number == YAFFS_SEQUENCE_BAD_BLOCK) -+ bi->block_state = state = YAFFS_BLOCK_STATE_DEAD; -+ -+ T(YAFFS_TRACE_SCAN_DEBUG, -+ (TSTR("Block scanning block %d state %d seq %d" TENDSTR), blk, -+ state, seq_number)); -+ -+ if (state == YAFFS_BLOCK_STATE_DEAD) { -+ T(YAFFS_TRACE_BAD_BLOCKS, -+ (TSTR("block %d is bad" TENDSTR), blk)); -+ } else if (state == YAFFS_BLOCK_STATE_EMPTY) { -+ T(YAFFS_TRACE_SCAN_DEBUG, -+ (TSTR("Block empty " TENDSTR))); -+ dev->n_erased_blocks++; -+ dev->n_free_chunks += dev->param.chunks_per_block; -+ } -+ bi++; -+ } -+ -+ startIterator = dev->internal_start_block; -+ endIterator = dev->internal_end_block; -+ -+ /* For each block.... */ -+ for (blockIterator = startIterator; !alloc_failed && blockIterator <= endIterator; -+ blockIterator++) { -+ -+ YYIELD(); -+ -+ YYIELD(); -+ -+ blk = blockIterator; -+ -+ bi = yaffs_get_block_info(dev, blk); -+ state = bi->block_state; -+ -+ deleted = 0; -+ -+ /* For each chunk in each block that needs scanning....*/ -+ for (c = 0; !alloc_failed && c < dev->param.chunks_per_block && -+ state == YAFFS_BLOCK_STATE_NEEDS_SCANNING; c++) { -+ /* Read the tags and decide what to do */ -+ chunk = blk * dev->param.chunks_per_block + c; -+ -+ result = yaffs_rd_chunk_tags_nand(dev, chunk, NULL, -+ &tags); -+ -+ /* Let's have a good look at this chunk... */ -+ -+ if (tags.ecc_result == YAFFS_ECC_RESULT_UNFIXED || tags.is_deleted) { -+ /* YAFFS1 only... -+ * A deleted chunk -+ */ -+ deleted++; -+ dev->n_free_chunks++; -+ /*T((" %d %d deleted\n",blk,c)); */ -+ } else if (!tags.chunk_used) { -+ /* An unassigned chunk in the block -+ * This means that either the block is empty or -+ * this is the one being allocated from -+ */ -+ -+ if (c == 0) { -+ /* We're looking at the first chunk in the block so the block is unused */ -+ state = YAFFS_BLOCK_STATE_EMPTY; -+ dev->n_erased_blocks++; -+ } else { -+ /* this is the block being allocated from */ -+ T(YAFFS_TRACE_SCAN, -+ (TSTR -+ (" Allocating from %d %d" TENDSTR), -+ blk, c)); -+ state = YAFFS_BLOCK_STATE_ALLOCATING; -+ dev->alloc_block = blk; -+ dev->alloc_page = c; -+ dev->alloc_block_finder = blk; -+ /* Set block finder here to encourage the allocator to go forth from here. */ -+ -+ } -+ -+ dev->n_free_chunks += (dev->param.chunks_per_block - c); -+ } else if (tags.chunk_id > 0) { -+ /* chunk_id > 0 so it is a data chunk... */ -+ unsigned int endpos; -+ -+ yaffs_set_chunk_bit(dev, blk, c); -+ bi->pages_in_use++; -+ -+ in = yaffs_find_or_create_by_number(dev, -+ tags. -+ obj_id, -+ YAFFS_OBJECT_TYPE_FILE); -+ /* PutChunkIntoFile checks for a clash (two data chunks with -+ * the same chunk_id). -+ */ -+ -+ if (!in) -+ alloc_failed = 1; -+ -+ if (in) { -+ if (!yaffs_put_chunk_in_file(in, tags.chunk_id, chunk, 1)) -+ alloc_failed = 1; -+ } -+ -+ endpos = -+ (tags.chunk_id - 1) * dev->data_bytes_per_chunk + -+ tags.n_bytes; -+ if (in && -+ in->variant_type == YAFFS_OBJECT_TYPE_FILE -+ && in->variant.file_variant.scanned_size < -+ endpos) { -+ in->variant.file_variant. -+ scanned_size = endpos; -+ if (!dev->param.use_header_file_size) { -+ in->variant.file_variant. -+ file_size = -+ in->variant.file_variant. -+ scanned_size; -+ } -+ -+ } -+ /* T((" %d %d data %d %d\n",blk,c,tags.obj_id,tags.chunk_id)); */ -+ } else { -+ /* chunk_id == 0, so it is an ObjectHeader. -+ * Thus, we read in the object header and make the object -+ */ -+ yaffs_set_chunk_bit(dev, blk, c); -+ bi->pages_in_use++; -+ -+ result = yaffs_rd_chunk_tags_nand(dev, chunk, -+ chunkData, -+ NULL); -+ -+ oh = (yaffs_obj_header *) chunkData; -+ -+ in = yaffs_find_by_number(dev, -+ tags.obj_id); -+ if (in && in->variant_type != oh->type) { -+ /* This should not happen, but somehow -+ * Wev'e ended up with an obj_id that has been reused but not yet -+ * deleted, and worse still it has changed type. Delete the old object. -+ */ -+ -+ yaffs_del_obj(in); -+ -+ in = 0; -+ } -+ -+ in = yaffs_find_or_create_by_number(dev, -+ tags. -+ obj_id, -+ oh->type); -+ -+ if (!in) -+ alloc_failed = 1; -+ -+ if (in && oh->shadows_obj > 0) { -+ -+ struct yaffs_shadow_fixer_s *fixer; -+ fixer = YMALLOC(sizeof(struct yaffs_shadow_fixer_s)); -+ if (fixer) { -+ fixer->next = shadowFixerList; -+ shadowFixerList = fixer; -+ fixer->obj_id = tags.obj_id; -+ fixer->shadowed_id = oh->shadows_obj; -+ T(YAFFS_TRACE_SCAN, -+ (TSTR -+ (" Shadow fixer: %d shadows %d" TENDSTR), -+ fixer->obj_id, fixer->shadowed_id)); -+ -+ } -+ -+ } -+ -+ if (in && in->valid) { -+ /* We have already filled this one. We have a duplicate and need to resolve it. */ -+ -+ unsigned existingSerial = in->serial; -+ unsigned newSerial = tags.serial_number; -+ -+ if (((existingSerial + 1) & 3) == newSerial) { -+ /* Use new one - destroy the exisiting one */ -+ yaffs_chunk_del(dev, -+ in->hdr_chunk, -+ 1, __LINE__); -+ in->valid = 0; -+ } else { -+ /* Use existing - destroy this one. */ -+ yaffs_chunk_del(dev, chunk, 1, -+ __LINE__); -+ } -+ } -+ -+ if (in && !in->valid && -+ (tags.obj_id == YAFFS_OBJECTID_ROOT || -+ tags.obj_id == YAFFS_OBJECTID_LOSTNFOUND)) { -+ /* We only load some info, don't fiddle with directory structure */ -+ in->valid = 1; -+ in->variant_type = oh->type; -+ -+ in->yst_mode = oh->yst_mode; -+#ifdef CONFIG_YAFFS_WINCE -+ in->win_atime[0] = oh->win_atime[0]; -+ in->win_ctime[0] = oh->win_ctime[0]; -+ in->win_mtime[0] = oh->win_mtime[0]; -+ in->win_atime[1] = oh->win_atime[1]; -+ in->win_ctime[1] = oh->win_ctime[1]; -+ in->win_mtime[1] = oh->win_mtime[1]; -+#else -+ in->yst_uid = oh->yst_uid; -+ in->yst_gid = oh->yst_gid; -+ in->yst_atime = oh->yst_atime; -+ in->yst_mtime = oh->yst_mtime; -+ in->yst_ctime = oh->yst_ctime; -+ in->yst_rdev = oh->yst_rdev; -+#endif -+ in->hdr_chunk = chunk; -+ in->serial = tags.serial_number; -+ -+ } else if (in && !in->valid) { -+ /* we need to load this info */ -+ -+ in->valid = 1; -+ in->variant_type = oh->type; -+ -+ in->yst_mode = oh->yst_mode; -+#ifdef CONFIG_YAFFS_WINCE -+ in->win_atime[0] = oh->win_atime[0]; -+ in->win_ctime[0] = oh->win_ctime[0]; -+ in->win_mtime[0] = oh->win_mtime[0]; -+ in->win_atime[1] = oh->win_atime[1]; -+ in->win_ctime[1] = oh->win_ctime[1]; -+ in->win_mtime[1] = oh->win_mtime[1]; -+#else -+ in->yst_uid = oh->yst_uid; -+ in->yst_gid = oh->yst_gid; -+ in->yst_atime = oh->yst_atime; -+ in->yst_mtime = oh->yst_mtime; -+ in->yst_ctime = oh->yst_ctime; -+ in->yst_rdev = oh->yst_rdev; -+#endif -+ in->hdr_chunk = chunk; -+ in->serial = tags.serial_number; -+ -+ yaffs_set_obj_name_from_oh(in, oh); -+ in->dirty = 0; -+ -+ /* directory stuff... -+ * hook up to parent -+ */ -+ -+ parent = -+ yaffs_find_or_create_by_number -+ (dev, oh->parent_obj_id, -+ YAFFS_OBJECT_TYPE_DIRECTORY); -+ if (!parent) -+ alloc_failed = 1; -+ if (parent && parent->variant_type == -+ YAFFS_OBJECT_TYPE_UNKNOWN) { -+ /* Set up as a directory */ -+ parent->variant_type = -+ YAFFS_OBJECT_TYPE_DIRECTORY; -+ YINIT_LIST_HEAD(&parent->variant. -+ dir_variant. -+ children); -+ } else if (!parent || parent->variant_type != -+ YAFFS_OBJECT_TYPE_DIRECTORY) { -+ /* Hoosterman, another problem.... -+ * We're trying to use a non-directory as a directory -+ */ -+ -+ T(YAFFS_TRACE_ERROR, -+ (TSTR -+ ("yaffs tragedy: attempting to use non-directory as a directory in scan. Put in lost+found." -+ TENDSTR))); -+ parent = dev->lost_n_found; -+ } -+ -+ yaffs_add_obj_to_dir(parent, in); -+ -+ if (0 && (parent == dev->del_dir || -+ parent == dev->unlinked_dir)) { -+ in->deleted = 1; /* If it is unlinked at start up then it wants deleting */ -+ dev->n_deleted_files++; -+ } -+ /* Note re hardlinks. -+ * Since we might scan a hardlink before its equivalent object is scanned -+ * we put them all in a list. -+ * After scanning is complete, we should have all the objects, so we run through this -+ * list and fix up all the chains. -+ */ -+ -+ switch (in->variant_type) { -+ case YAFFS_OBJECT_TYPE_UNKNOWN: -+ /* Todo got a problem */ -+ break; -+ case YAFFS_OBJECT_TYPE_FILE: -+ if (dev->param.use_header_file_size) -+ -+ in->variant.file_variant. -+ file_size = -+ oh->file_size; -+ -+ break; -+ case YAFFS_OBJECT_TYPE_HARDLINK: -+ in->variant.hardlink_variant. -+ equiv_id = -+ oh->equiv_id; -+ in->hard_links.next = -+ (struct ylist_head *) -+ hard_list; -+ hard_list = in; -+ break; -+ case YAFFS_OBJECT_TYPE_DIRECTORY: -+ /* Do nothing */ -+ break; -+ case YAFFS_OBJECT_TYPE_SPECIAL: -+ /* Do nothing */ -+ break; -+ case YAFFS_OBJECT_TYPE_SYMLINK: -+ in->variant.symlink_variant.alias = -+ yaffs_clone_str(oh->alias); -+ if (!in->variant.symlink_variant.alias) -+ alloc_failed = 1; -+ break; -+ } -+ -+ } -+ } -+ } -+ -+ if (state == YAFFS_BLOCK_STATE_NEEDS_SCANNING) { -+ /* If we got this far while scanning, then the block is fully allocated.*/ -+ state = YAFFS_BLOCK_STATE_FULL; -+ } -+ -+ if (state == YAFFS_BLOCK_STATE_ALLOCATING) { -+ /* If the block was partially allocated then treat it as fully allocated.*/ -+ state = YAFFS_BLOCK_STATE_FULL; -+ dev->alloc_block = -1; -+ } -+ -+ bi->block_state = state; -+ -+ /* Now let's see if it was dirty */ -+ if (bi->pages_in_use == 0 && -+ !bi->has_shrink_hdr && -+ bi->block_state == YAFFS_BLOCK_STATE_FULL) { -+ yaffs_block_became_dirty(dev, blk); -+ } -+ -+ } -+ -+ -+ /* Ok, we've done all the scanning. -+ * Fix up the hard link chains. -+ * We should now have scanned all the objects, now it's time to add these -+ * hardlinks. -+ */ -+ -+ yaffs_link_fixup(dev, hard_list); -+ -+ /* Fix up any shadowed objects */ -+ { -+ struct yaffs_shadow_fixer_s *fixer; -+ yaffs_obj_t *obj; -+ -+ while (shadowFixerList) { -+ fixer = shadowFixerList; -+ shadowFixerList = fixer->next; -+ /* Complete the rename transaction by deleting the shadowed object -+ * then setting the object header to unshadowed. -+ */ -+ obj = yaffs_find_by_number(dev, fixer->shadowed_id); -+ if (obj) -+ yaffs_del_obj(obj); -+ -+ obj = yaffs_find_by_number(dev, fixer->obj_id); -+ -+ if (obj) -+ yaffs_update_oh(obj, NULL, 1, 0, 0, NULL); -+ -+ YFREE(fixer); -+ } -+ } -+ -+ yaffs_release_temp_buffer(dev, chunkData, __LINE__); -+ -+ if (alloc_failed) -+ return YAFFS_FAIL; -+ -+ T(YAFFS_TRACE_SCAN, (TSTR("yaffs1_scan ends" TENDSTR))); -+ -+ -+ return YAFFS_OK; -+} -+ ---- /dev/null -+++ b/fs/yaffs2/yaffs_yaffs1.h -@@ -0,0 +1,22 @@ -+/* -+ * YAFFS: Yet another Flash File System . A NAND-flash specific file system. -+ * -+ * Copyright (C) 2002-2010 Aleph One Ltd. -+ * for Toby Churchill Ltd and Brightstar Engineering -+ * -+ * Created by Charles Manning <charles@aleph1.co.uk> -+ * -+ * This program is free software; you can redistribute it and/or modify -+ * it under the terms of the GNU Lesser General Public License version 2.1 as -+ * published by the Free Software Foundation. -+ * -+ * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL. -+ */ -+ -+#ifndef __YAFFS_YAFFS1_H__ -+#define __YAFFS_YAFFS1_H__ -+ -+#include "yaffs_guts.h" -+int yaffs1_scan(yaffs_dev_t *dev); -+ -+#endif ---- /dev/null -+++ b/fs/yaffs2/yaffs_yaffs2.c -@@ -0,0 +1,1540 @@ -+/* -+ * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. -+ * -+ * Copyright (C) 2002-2010 Aleph One Ltd. -+ * for Toby Churchill Ltd and Brightstar Engineering -+ * -+ * Created by Charles Manning <charles@aleph1.co.uk> -+ * -+ * This program is free software; you can redistribute it and/or modify -+ * it under the terms of the GNU General Public License version 2 as -+ * published by the Free Software Foundation. -+ */ -+ -+ -+#include "yaffs_guts.h" -+#include "yaffs_trace.h" -+#include "yaffs_yaffs2.h" -+#include "yaffs_checkptrw.h" -+#include "yaffs_bitmap.h" -+#include "yaffs_qsort.h" -+#include "yaffs_nand.h" -+#include "yaffs_getblockinfo.h" -+#include "yaffs_verify.h" -+ -+/* -+ * Checkpoints are really no benefit on very small partitions. -+ * -+ * To save space on small partitions don't bother with checkpoints unless -+ * the partition is at least this big. -+ */ -+#define YAFFS_CHECKPOINT_MIN_BLOCKS 60 -+ -+#define YAFFS_SMALL_HOLE_THRESHOLD 4 -+ -+ -+/* -+ * Oldest Dirty Sequence Number handling. -+ */ -+ -+/* yaffs_calc_oldest_dirty_seq() -+ * yaffs2_find_oldest_dirty_seq() -+ * Calculate the oldest dirty sequence number if we don't know it. -+ */ -+void yaffs_calc_oldest_dirty_seq(yaffs_dev_t *dev) -+{ -+ int i; -+ unsigned seq; -+ unsigned block_no = 0; -+ yaffs_block_info_t *b; -+ -+ if(!dev->param.is_yaffs2) -+ return; -+ -+ /* Find the oldest dirty sequence number. */ -+ seq = dev->seq_number + 1; -+ b = dev->block_info; -+ for (i = dev->internal_start_block; i <= dev->internal_end_block; i++) { -+ if (b->block_state == YAFFS_BLOCK_STATE_FULL && -+ (b->pages_in_use - b->soft_del_pages) < dev->param.chunks_per_block && -+ b->seq_number < seq) { -+ seq = b->seq_number; -+ block_no = i; -+ } -+ b++; -+ } -+ -+ if(block_no){ -+ dev->oldest_dirty_seq = seq; -+ dev->oldest_dirty_block = block_no; -+ } -+ -+} -+ -+ -+void yaffs2_find_oldest_dirty_seq(yaffs_dev_t *dev) -+{ -+ if(!dev->param.is_yaffs2) -+ return; -+ -+ if(!dev->oldest_dirty_seq) -+ yaffs_calc_oldest_dirty_seq(dev); -+} -+ -+/* -+ * yaffs_clear_oldest_dirty_seq() -+ * Called when a block is erased or marked bad. (ie. when its seq_number -+ * becomes invalid). If the value matches the oldest then we clear -+ * dev->oldest_dirty_seq to force its recomputation. -+ */ -+void yaffs2_clear_oldest_dirty_seq(yaffs_dev_t *dev, yaffs_block_info_t *bi) -+{ -+ -+ if(!dev->param.is_yaffs2) -+ return; -+ -+ if(!bi || bi->seq_number == dev->oldest_dirty_seq){ -+ dev->oldest_dirty_seq = 0; -+ dev->oldest_dirty_block = 0; -+ } -+} -+ -+/* -+ * yaffs2_update_oldest_dirty_seq() -+ * Update the oldest dirty sequence number whenever we dirty a block. -+ * Only do this if the oldest_dirty_seq is actually being tracked. -+ */ -+void yaffs2_update_oldest_dirty_seq(yaffs_dev_t *dev, unsigned block_no, yaffs_block_info_t *bi) -+{ -+ if(!dev->param.is_yaffs2) -+ return; -+ -+ if(dev->oldest_dirty_seq){ -+ if(dev->oldest_dirty_seq > bi->seq_number){ -+ dev->oldest_dirty_seq = bi->seq_number; -+ dev->oldest_dirty_block = block_no; -+ } -+ } -+} -+ -+int yaffs_block_ok_for_gc(yaffs_dev_t *dev, -+ yaffs_block_info_t *bi) -+{ -+ -+ if (!dev->param.is_yaffs2) -+ return 1; /* disqualification only applies to yaffs2. */ -+ -+ if (!bi->has_shrink_hdr) -+ return 1; /* can gc */ -+ -+ yaffs2_find_oldest_dirty_seq(dev); -+ -+ /* Can't do gc of this block if there are any blocks older than this one that have -+ * discarded pages. -+ */ -+ return (bi->seq_number <= dev->oldest_dirty_seq); -+} -+ -+/* -+ * yaffs2_find_refresh_block() -+ * periodically finds the oldest full block by sequence number for refreshing. -+ * Only for yaffs2. -+ */ -+__u32 yaffs2_find_refresh_block(yaffs_dev_t *dev) -+{ -+ __u32 b ; -+ -+ __u32 oldest = 0; -+ __u32 oldestSequence = 0; -+ -+ yaffs_block_info_t *bi; -+ -+ if(!dev->param.is_yaffs2) -+ return oldest; -+ -+ /* -+ * If refresh period < 10 then refreshing is disabled. -+ */ -+ if(dev->param.refresh_period < 10) -+ return oldest; -+ -+ /* -+ * Fix broken values. -+ */ -+ if(dev->refresh_skip > dev->param.refresh_period) -+ dev->refresh_skip = dev->param.refresh_period; -+ -+ if(dev->refresh_skip > 0) -+ return oldest; -+ -+ /* -+ * Refresh skip is now zero. -+ * We'll do a refresh this time around.... -+ * Update the refresh skip and find the oldest block. -+ */ -+ dev->refresh_skip = dev->param.refresh_period; -+ dev->refresh_count++; -+ bi = dev->block_info; -+ for (b = dev->internal_start_block; b <=dev->internal_end_block; b++){ -+ -+ if (bi->block_state == YAFFS_BLOCK_STATE_FULL){ -+ -+ if(oldest < 1 || -+ bi->seq_number < oldestSequence){ -+ oldest = b; -+ oldestSequence = bi->seq_number; -+ } -+ } -+ bi++; -+ } -+ -+ if (oldest > 0) { -+ T(YAFFS_TRACE_GC, -+ (TSTR("GC refresh count %d selected block %d with seq_number %d" TENDSTR), -+ dev->refresh_count, oldest, oldestSequence)); -+ } -+ -+ return oldest; -+} -+ -+int yaffs2_checkpt_required(yaffs_dev_t *dev) -+{ -+ int nblocks; -+ -+ if(!dev->param.is_yaffs2) -+ return 0; -+ -+ nblocks = dev->internal_end_block - dev->internal_start_block + 1 ; -+ -+ return !dev->param.skip_checkpt_wr && -+ !dev->read_only && -+ (nblocks >= YAFFS_CHECKPOINT_MIN_BLOCKS); -+} -+ -+int yaffs_calc_checkpt_blocks_required(yaffs_dev_t *dev) -+{ -+ int retval; -+ -+ if(!dev->param.is_yaffs2) -+ return 0; -+ -+ if (!dev->checkpoint_blocks_required && -+ yaffs2_checkpt_required(dev)){ -+ /* Not a valid value so recalculate */ -+ int n_bytes = 0; -+ int nBlocks; -+ int devBlocks = (dev->param.end_block - dev->param.start_block + 1); -+ -+ n_bytes += sizeof(yaffs_checkpt_validty_t); -+ n_bytes += sizeof(yaffs_checkpt_dev_t); -+ n_bytes += devBlocks * sizeof(yaffs_block_info_t); -+ n_bytes += devBlocks * dev->chunk_bit_stride; -+ n_bytes += (sizeof(yaffs_checkpt_obj_t) + sizeof(__u32)) * (dev->n_obj); -+ n_bytes += (dev->tnode_size + sizeof(__u32)) * (dev->n_tnodes); -+ n_bytes += sizeof(yaffs_checkpt_validty_t); -+ n_bytes += sizeof(__u32); /* checksum*/ -+ -+ /* Round up and add 2 blocks to allow for some bad blocks, so add 3 */ -+ -+ nBlocks = (n_bytes/(dev->data_bytes_per_chunk * dev->param.chunks_per_block)) + 3; -+ -+ dev->checkpoint_blocks_required = nBlocks; -+ } -+ -+ retval = dev->checkpoint_blocks_required - dev->blocks_in_checkpt; -+ if(retval < 0) -+ retval = 0; -+ return retval; -+} -+ -+/*--------------------- Checkpointing --------------------*/ -+ -+ -+static int yaffs2_wr_checkpt_validity_marker(yaffs_dev_t *dev, int head) -+{ -+ yaffs_checkpt_validty_t cp; -+ -+ memset(&cp, 0, sizeof(cp)); -+ -+ cp.struct_type = sizeof(cp); -+ cp.magic = YAFFS_MAGIC; -+ cp.version = YAFFS_CHECKPOINT_VERSION; -+ cp.head = (head) ? 1 : 0; -+ -+ return (yaffs2_checkpt_wr(dev, &cp, sizeof(cp)) == sizeof(cp)) ? -+ 1 : 0; -+} -+ -+static int yaffs2_rd_checkpt_validty_marker(yaffs_dev_t *dev, int head) -+{ -+ yaffs_checkpt_validty_t cp; -+ int ok; -+ -+ ok = (yaffs2_checkpt_rd(dev, &cp, sizeof(cp)) == sizeof(cp)); -+ -+ if (ok) -+ ok = (cp.struct_type == sizeof(cp)) && -+ (cp.magic == YAFFS_MAGIC) && -+ (cp.version == YAFFS_CHECKPOINT_VERSION) && -+ (cp.head == ((head) ? 1 : 0)); -+ return ok ? 1 : 0; -+} -+ -+static void yaffs2_dev_to_checkpt_dev(yaffs_checkpt_dev_t *cp, -+ yaffs_dev_t *dev) -+{ -+ cp->n_erased_blocks = dev->n_erased_blocks; -+ cp->alloc_block = dev->alloc_block; -+ cp->alloc_page = dev->alloc_page; -+ cp->n_free_chunks = dev->n_free_chunks; -+ -+ cp->n_deleted_files = dev->n_deleted_files; -+ cp->n_unlinked_files = dev->n_unlinked_files; -+ cp->n_bg_deletions = dev->n_bg_deletions; -+ cp->seq_number = dev->seq_number; -+ -+} -+ -+static void yaffs_checkpt_dev_to_dev(yaffs_dev_t *dev, -+ yaffs_checkpt_dev_t *cp) -+{ -+ dev->n_erased_blocks = cp->n_erased_blocks; -+ dev->alloc_block = cp->alloc_block; -+ dev->alloc_page = cp->alloc_page; -+ dev->n_free_chunks = cp->n_free_chunks; -+ -+ dev->n_deleted_files = cp->n_deleted_files; -+ dev->n_unlinked_files = cp->n_unlinked_files; -+ dev->n_bg_deletions = cp->n_bg_deletions; -+ dev->seq_number = cp->seq_number; -+} -+ -+ -+static int yaffs2_wr_checkpt_dev(yaffs_dev_t *dev) -+{ -+ yaffs_checkpt_dev_t cp; -+ __u32 n_bytes; -+ __u32 nBlocks = (dev->internal_end_block - dev->internal_start_block + 1); -+ -+ int ok; -+ -+ /* Write device runtime values*/ -+ yaffs2_dev_to_checkpt_dev(&cp, dev); -+ cp.struct_type = sizeof(cp); -+ -+ ok = (yaffs2_checkpt_wr(dev, &cp, sizeof(cp)) == sizeof(cp)); -+ -+ /* Write block info */ -+ if (ok) { -+ n_bytes = nBlocks * sizeof(yaffs_block_info_t); -+ ok = (yaffs2_checkpt_wr(dev, dev->block_info, n_bytes) == n_bytes); -+ } -+ -+ /* Write chunk bits */ -+ if (ok) { -+ n_bytes = nBlocks * dev->chunk_bit_stride; -+ ok = (yaffs2_checkpt_wr(dev, dev->chunk_bits, n_bytes) == n_bytes); -+ } -+ return ok ? 1 : 0; -+ -+} -+ -+static int yaffs2_rd_checkpt_dev(yaffs_dev_t *dev) -+{ -+ yaffs_checkpt_dev_t cp; -+ __u32 n_bytes; -+ __u32 nBlocks = (dev->internal_end_block - dev->internal_start_block + 1); -+ -+ int ok; -+ -+ ok = (yaffs2_checkpt_rd(dev, &cp, sizeof(cp)) == sizeof(cp)); -+ if (!ok) -+ return 0; -+ -+ if (cp.struct_type != sizeof(cp)) -+ return 0; -+ -+ -+ yaffs_checkpt_dev_to_dev(dev, &cp); -+ -+ n_bytes = nBlocks * sizeof(yaffs_block_info_t); -+ -+ ok = (yaffs2_checkpt_rd(dev, dev->block_info, n_bytes) == n_bytes); -+ -+ if (!ok) -+ return 0; -+ n_bytes = nBlocks * dev->chunk_bit_stride; -+ -+ ok = (yaffs2_checkpt_rd(dev, dev->chunk_bits, n_bytes) == n_bytes); -+ -+ return ok ? 1 : 0; -+} -+ -+static void yaffs2_obj_checkpt_obj(yaffs_checkpt_obj_t *cp, -+ yaffs_obj_t *obj) -+{ -+ -+ cp->obj_id = obj->obj_id; -+ cp->parent_id = (obj->parent) ? obj->parent->obj_id : 0; -+ cp->hdr_chunk = obj->hdr_chunk; -+ cp->variant_type = obj->variant_type; -+ cp->deleted = obj->deleted; -+ cp->soft_del = obj->soft_del; -+ cp->unlinked = obj->unlinked; -+ cp->fake = obj->fake; -+ cp->rename_allowed = obj->rename_allowed; -+ cp->unlink_allowed = obj->unlink_allowed; -+ cp->serial = obj->serial; -+ cp->n_data_chunks = obj->n_data_chunks; -+ -+ if (obj->variant_type == YAFFS_OBJECT_TYPE_FILE) -+ cp->size_or_equiv_obj = obj->variant.file_variant.file_size; -+ else if (obj->variant_type == YAFFS_OBJECT_TYPE_HARDLINK) -+ cp->size_or_equiv_obj = obj->variant.hardlink_variant.equiv_id; -+} -+ -+static int taffs2_checkpt_obj_to_obj(yaffs_obj_t *obj, yaffs_checkpt_obj_t *cp) -+{ -+ -+ yaffs_obj_t *parent; -+ -+ if (obj->variant_type != cp->variant_type) { -+ T(YAFFS_TRACE_ERROR, (TSTR("Checkpoint read object %d type %d " -+ TCONT("chunk %d does not match existing object type %d") -+ TENDSTR), cp->obj_id, cp->variant_type, cp->hdr_chunk, -+ obj->variant_type)); -+ return 0; -+ } -+ -+ obj->obj_id = cp->obj_id; -+ -+ if (cp->parent_id) -+ parent = yaffs_find_or_create_by_number( -+ obj->my_dev, -+ cp->parent_id, -+ YAFFS_OBJECT_TYPE_DIRECTORY); -+ else -+ parent = NULL; -+ -+ if (parent) { -+ if (parent->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) { -+ T(YAFFS_TRACE_ALWAYS, (TSTR("Checkpoint read object %d parent %d type %d" -+ TCONT(" chunk %d Parent type, %d, not directory") -+ TENDSTR), -+ cp->obj_id, cp->parent_id, cp->variant_type, -+ cp->hdr_chunk, parent->variant_type)); -+ return 0; -+ } -+ yaffs_add_obj_to_dir(parent, obj); -+ } -+ -+ obj->hdr_chunk = cp->hdr_chunk; -+ obj->variant_type = cp->variant_type; -+ obj->deleted = cp->deleted; -+ obj->soft_del = cp->soft_del; -+ obj->unlinked = cp->unlinked; -+ obj->fake = cp->fake; -+ obj->rename_allowed = cp->rename_allowed; -+ obj->unlink_allowed = cp->unlink_allowed; -+ obj->serial = cp->serial; -+ obj->n_data_chunks = cp->n_data_chunks; -+ -+ if (obj->variant_type == YAFFS_OBJECT_TYPE_FILE) -+ obj->variant.file_variant.file_size = cp->size_or_equiv_obj; -+ else if (obj->variant_type == YAFFS_OBJECT_TYPE_HARDLINK) -+ obj->variant.hardlink_variant.equiv_id = cp->size_or_equiv_obj; -+ -+ if (obj->hdr_chunk > 0) -+ obj->lazy_loaded = 1; -+ return 1; -+} -+ -+ -+ -+static int yaffs2_checkpt_tnode_worker(yaffs_obj_t *in, yaffs_tnode_t *tn, -+ __u32 level, int chunk_offset) -+{ -+ int i; -+ yaffs_dev_t *dev = in->my_dev; -+ int ok = 1; -+ -+ if (tn) { -+ if (level > 0) { -+ -+ for (i = 0; i < YAFFS_NTNODES_INTERNAL && ok; i++) { -+ if (tn->internal[i]) { -+ ok = yaffs2_checkpt_tnode_worker(in, -+ tn->internal[i], -+ level - 1, -+ (chunk_offset<<YAFFS_TNODES_INTERNAL_BITS) + i); -+ } -+ } -+ } else if (level == 0) { -+ __u32 baseOffset = chunk_offset << YAFFS_TNODES_LEVEL0_BITS; -+ ok = (yaffs2_checkpt_wr(dev, &baseOffset, sizeof(baseOffset)) == sizeof(baseOffset)); -+ if (ok) -+ ok = (yaffs2_checkpt_wr(dev, tn, dev->tnode_size) == dev->tnode_size); -+ } -+ } -+ -+ return ok; -+ -+} -+ -+static int yaffs2_wr_checkpt_tnodes(yaffs_obj_t *obj) -+{ -+ __u32 endMarker = ~0; -+ int ok = 1; -+ -+ if (obj->variant_type == YAFFS_OBJECT_TYPE_FILE) { -+ ok = yaffs2_checkpt_tnode_worker(obj, -+ obj->variant.file_variant.top, -+ obj->variant.file_variant.top_level, -+ 0); -+ if (ok) -+ ok = (yaffs2_checkpt_wr(obj->my_dev, &endMarker, sizeof(endMarker)) == -+ sizeof(endMarker)); -+ } -+ -+ return ok ? 1 : 0; -+} -+ -+static int yaffs2_rd_checkpt_tnodes(yaffs_obj_t *obj) -+{ -+ __u32 baseChunk; -+ int ok = 1; -+ yaffs_dev_t *dev = obj->my_dev; -+ yaffs_file_s *fileStructPtr = &obj->variant.file_variant; -+ yaffs_tnode_t *tn; -+ int nread = 0; -+ -+ ok = (yaffs2_checkpt_rd(dev, &baseChunk, sizeof(baseChunk)) == sizeof(baseChunk)); -+ -+ while (ok && (~baseChunk)) { -+ nread++; -+ /* Read level 0 tnode */ -+ -+ -+ tn = yaffs_get_tnode(dev); -+ if (tn){ -+ ok = (yaffs2_checkpt_rd(dev, tn, dev->tnode_size) == dev->tnode_size); -+ } else -+ ok = 0; -+ -+ if (tn && ok) -+ ok = yaffs_add_find_tnode_0(dev, -+ fileStructPtr, -+ baseChunk, -+ tn) ? 1 : 0; -+ -+ if (ok) -+ ok = (yaffs2_checkpt_rd(dev, &baseChunk, sizeof(baseChunk)) == sizeof(baseChunk)); -+ -+ } -+ -+ T(YAFFS_TRACE_CHECKPOINT, ( -+ TSTR("Checkpoint read tnodes %d records, last %d. ok %d" TENDSTR), -+ nread, baseChunk, ok)); -+ -+ return ok ? 1 : 0; -+} -+ -+ -+static int yaffs2_wr_checkpt_objs(yaffs_dev_t *dev) -+{ -+ yaffs_obj_t *obj; -+ yaffs_checkpt_obj_t cp; -+ int i; -+ int ok = 1; -+ struct ylist_head *lh; -+ -+ -+ /* Iterate through the objects in each hash entry, -+ * dumping them to the checkpointing stream. -+ */ -+ -+ for (i = 0; ok && i < YAFFS_NOBJECT_BUCKETS; i++) { -+ ylist_for_each(lh, &dev->obj_bucket[i].list) { -+ if (lh) { -+ obj = ylist_entry(lh, yaffs_obj_t, hash_link); -+ if (!obj->defered_free) { -+ yaffs2_obj_checkpt_obj(&cp, obj); -+ cp.struct_type = sizeof(cp); -+ -+ T(YAFFS_TRACE_CHECKPOINT, ( -+ TSTR("Checkpoint write object %d parent %d type %d chunk %d obj addr %p" TENDSTR), -+ cp.obj_id, cp.parent_id, cp.variant_type, cp.hdr_chunk, obj)); -+ -+ ok = (yaffs2_checkpt_wr(dev, &cp, sizeof(cp)) == sizeof(cp)); -+ -+ if (ok && obj->variant_type == YAFFS_OBJECT_TYPE_FILE) -+ ok = yaffs2_wr_checkpt_tnodes(obj); -+ } -+ } -+ } -+ } -+ -+ /* Dump end of list */ -+ memset(&cp, 0xFF, sizeof(yaffs_checkpt_obj_t)); -+ cp.struct_type = sizeof(cp); -+ -+ if (ok) -+ ok = (yaffs2_checkpt_wr(dev, &cp, sizeof(cp)) == sizeof(cp)); -+ -+ return ok ? 1 : 0; -+} -+ -+static int yaffs2_rd_checkpt_objs(yaffs_dev_t *dev) -+{ -+ yaffs_obj_t *obj; -+ yaffs_checkpt_obj_t cp; -+ int ok = 1; -+ int done = 0; -+ yaffs_obj_t *hard_list = NULL; -+ -+ while (ok && !done) { -+ ok = (yaffs2_checkpt_rd(dev, &cp, sizeof(cp)) == sizeof(cp)); -+ if (cp.struct_type != sizeof(cp)) { -+ T(YAFFS_TRACE_CHECKPOINT, (TSTR("struct size %d instead of %d ok %d"TENDSTR), -+ cp.struct_type, (int)sizeof(cp), ok)); -+ ok = 0; -+ } -+ -+ T(YAFFS_TRACE_CHECKPOINT, (TSTR("Checkpoint read object %d parent %d type %d chunk %d " TENDSTR), -+ cp.obj_id, cp.parent_id, cp.variant_type, cp.hdr_chunk)); -+ -+ if (ok && cp.obj_id == ~0) -+ done = 1; -+ else if (ok) { -+ obj = yaffs_find_or_create_by_number(dev, cp.obj_id, cp.variant_type); -+ if (obj) { -+ ok = taffs2_checkpt_obj_to_obj(obj, &cp); -+ if (!ok) -+ break; -+ if (obj->variant_type == YAFFS_OBJECT_TYPE_FILE) { -+ ok = yaffs2_rd_checkpt_tnodes(obj); -+ } else if (obj->variant_type == YAFFS_OBJECT_TYPE_HARDLINK) { -+ obj->hard_links.next = -+ (struct ylist_head *) hard_list; -+ hard_list = obj; -+ } -+ } else -+ ok = 0; -+ } -+ } -+ -+ if (ok) -+ yaffs_link_fixup(dev, hard_list); -+ -+ return ok ? 1 : 0; -+} -+ -+static int yaffs2_wr_checkpt_sum(yaffs_dev_t *dev) -+{ -+ __u32 checkpt_sum; -+ int ok; -+ -+ yaffs2_get_checkpt_sum(dev, &checkpt_sum); -+ -+ ok = (yaffs2_checkpt_wr(dev, &checkpt_sum, sizeof(checkpt_sum)) == sizeof(checkpt_sum)); -+ -+ if (!ok) -+ return 0; -+ -+ return 1; -+} -+ -+static int yaffs2_rd_checkpt_sum(yaffs_dev_t *dev) -+{ -+ __u32 checkpt_sum0; -+ __u32 checkpt_sum1; -+ int ok; -+ -+ yaffs2_get_checkpt_sum(dev, &checkpt_sum0); -+ -+ ok = (yaffs2_checkpt_rd(dev, &checkpt_sum1, sizeof(checkpt_sum1)) == sizeof(checkpt_sum1)); -+ -+ if (!ok) -+ return 0; -+ -+ if (checkpt_sum0 != checkpt_sum1) -+ return 0; -+ -+ return 1; -+} -+ -+ -+static int yaffs2_wr_checkpt_data(yaffs_dev_t *dev) -+{ -+ int ok = 1; -+ -+ if (!yaffs2_checkpt_required(dev)) { -+ T(YAFFS_TRACE_CHECKPOINT, (TSTR("skipping checkpoint write" TENDSTR))); -+ ok = 0; -+ } -+ -+ if (ok) -+ ok = yaffs2_checkpt_open(dev, 1); -+ -+ if (ok) { -+ T(YAFFS_TRACE_CHECKPOINT, (TSTR("write checkpoint validity" TENDSTR))); -+ ok = yaffs2_wr_checkpt_validity_marker(dev, 1); -+ } -+ if (ok) { -+ T(YAFFS_TRACE_CHECKPOINT, (TSTR("write checkpoint device" TENDSTR))); -+ ok = yaffs2_wr_checkpt_dev(dev); -+ } -+ if (ok) { -+ T(YAFFS_TRACE_CHECKPOINT, (TSTR("write checkpoint objects" TENDSTR))); -+ ok = yaffs2_wr_checkpt_objs(dev); -+ } -+ if (ok) { -+ T(YAFFS_TRACE_CHECKPOINT, (TSTR("write checkpoint validity" TENDSTR))); -+ ok = yaffs2_wr_checkpt_validity_marker(dev, 0); -+ } -+ -+ if (ok) -+ ok = yaffs2_wr_checkpt_sum(dev); -+ -+ if (!yaffs_checkpt_close(dev)) -+ ok = 0; -+ -+ if (ok) -+ dev->is_checkpointed = 1; -+ else -+ dev->is_checkpointed = 0; -+ -+ return dev->is_checkpointed; -+} -+ -+static int yaffs2_rd_checkpt_data(yaffs_dev_t *dev) -+{ -+ int ok = 1; -+ -+ if(!dev->param.is_yaffs2) -+ ok = 0; -+ -+ if (ok && dev->param.skip_checkpt_rd) { -+ T(YAFFS_TRACE_CHECKPOINT, (TSTR("skipping checkpoint read" TENDSTR))); -+ ok = 0; -+ } -+ -+ if (ok) -+ ok = yaffs2_checkpt_open(dev, 0); /* open for read */ -+ -+ if (ok) { -+ T(YAFFS_TRACE_CHECKPOINT, (TSTR("read checkpoint validity" TENDSTR))); -+ ok = yaffs2_rd_checkpt_validty_marker(dev, 1); -+ } -+ if (ok) { -+ T(YAFFS_TRACE_CHECKPOINT, (TSTR("read checkpoint device" TENDSTR))); -+ ok = yaffs2_rd_checkpt_dev(dev); -+ } -+ if (ok) { -+ T(YAFFS_TRACE_CHECKPOINT, (TSTR("read checkpoint objects" TENDSTR))); -+ ok = yaffs2_rd_checkpt_objs(dev); -+ } -+ if (ok) { -+ T(YAFFS_TRACE_CHECKPOINT, (TSTR("read checkpoint validity" TENDSTR))); -+ ok = yaffs2_rd_checkpt_validty_marker(dev, 0); -+ } -+ -+ if (ok) { -+ ok = yaffs2_rd_checkpt_sum(dev); -+ T(YAFFS_TRACE_CHECKPOINT, (TSTR("read checkpoint checksum %d" TENDSTR), ok)); -+ } -+ -+ if (!yaffs_checkpt_close(dev)) -+ ok = 0; -+ -+ if (ok) -+ dev->is_checkpointed = 1; -+ else -+ dev->is_checkpointed = 0; -+ -+ return ok ? 1 : 0; -+ -+} -+ -+void yaffs2_checkpt_invalidate(yaffs_dev_t *dev) -+{ -+ if (dev->is_checkpointed || -+ dev->blocks_in_checkpt > 0) { -+ dev->is_checkpointed = 0; -+ yaffs2_checkpt_invalidate_stream(dev); -+ } -+ if (dev->param.sb_dirty_fn) -+ dev->param.sb_dirty_fn(dev); -+} -+ -+ -+int yaffs_checkpoint_save(yaffs_dev_t *dev) -+{ -+ -+ T(YAFFS_TRACE_CHECKPOINT, (TSTR("save entry: is_checkpointed %d"TENDSTR), dev->is_checkpointed)); -+ -+ yaffs_verify_objects(dev); -+ yaffs_verify_blocks(dev); -+ yaffs_verify_free_chunks(dev); -+ -+ if (!dev->is_checkpointed) { -+ yaffs2_checkpt_invalidate(dev); -+ yaffs2_wr_checkpt_data(dev); -+ } -+ -+ T(YAFFS_TRACE_ALWAYS, (TSTR("save exit: is_checkpointed %d"TENDSTR), dev->is_checkpointed)); -+ -+ return dev->is_checkpointed; -+} -+ -+int yaffs2_checkpt_restore(yaffs_dev_t *dev) -+{ -+ int retval; -+ T(YAFFS_TRACE_CHECKPOINT, (TSTR("restore entry: is_checkpointed %d"TENDSTR), dev->is_checkpointed)); -+ -+ retval = yaffs2_rd_checkpt_data(dev); -+ -+ if (dev->is_checkpointed) { -+ yaffs_verify_objects(dev); -+ yaffs_verify_blocks(dev); -+ yaffs_verify_free_chunks(dev); -+ } -+ -+ T(YAFFS_TRACE_CHECKPOINT, (TSTR("restore exit: is_checkpointed %d"TENDSTR), dev->is_checkpointed)); -+ -+ return retval; -+} -+ -+int yaffs2_handle_hole(yaffs_obj_t *obj, loff_t new_size) -+{ -+ /* if newsSize > oldFileSize. -+ * We're going to be writing a hole. -+ * If the hole is small then write zeros otherwise write a start of hole marker. -+ */ -+ -+ -+ loff_t oldFileSize; -+ int increase; -+ int smallHole ; -+ int result = YAFFS_OK; -+ yaffs_dev_t *dev = NULL; -+ -+ __u8 *localBuffer = NULL; -+ -+ int smallIncreaseOk = 0; -+ -+ if(!obj) -+ return YAFFS_FAIL; -+ -+ if(obj->variant_type != YAFFS_OBJECT_TYPE_FILE) -+ return YAFFS_FAIL; -+ -+ dev = obj->my_dev; -+ -+ /* Bail out if not yaffs2 mode */ -+ if(!dev->param.is_yaffs2) -+ return YAFFS_OK; -+ -+ oldFileSize = obj->variant.file_variant.file_size; -+ -+ if (new_size <= oldFileSize) -+ return YAFFS_OK; -+ -+ increase = new_size - oldFileSize; -+ -+ if(increase < YAFFS_SMALL_HOLE_THRESHOLD * dev->data_bytes_per_chunk && -+ yaffs_check_alloc_available(dev, YAFFS_SMALL_HOLE_THRESHOLD + 1)) -+ smallHole = 1; -+ else -+ smallHole = 0; -+ -+ if(smallHole) -+ localBuffer= yaffs_get_temp_buffer(dev, __LINE__); -+ -+ if(localBuffer){ -+ /* fill hole with zero bytes */ -+ int pos = oldFileSize; -+ int thisWrite; -+ int written; -+ memset(localBuffer,0,dev->data_bytes_per_chunk); -+ smallIncreaseOk = 1; -+ -+ while(increase > 0 && smallIncreaseOk){ -+ thisWrite = increase; -+ if(thisWrite > dev->data_bytes_per_chunk) -+ thisWrite = dev->data_bytes_per_chunk; -+ written = yaffs_do_file_wr(obj,localBuffer,pos,thisWrite,0); -+ if(written == thisWrite){ -+ pos += thisWrite; -+ increase -= thisWrite; -+ } else -+ smallIncreaseOk = 0; -+ } -+ -+ yaffs_release_temp_buffer(dev,localBuffer,__LINE__); -+ -+ /* If we were out of space then reverse any chunks we've added */ -+ if(!smallIncreaseOk) -+ yaffs_resize_file_down(obj, oldFileSize); -+ } -+ -+ if (!smallIncreaseOk && -+ obj->parent && -+ obj->parent->obj_id != YAFFS_OBJECTID_UNLINKED && -+ obj->parent->obj_id != YAFFS_OBJECTID_DELETED){ -+ /* Write a hole start header with the old file size */ -+ yaffs_update_oh(obj, NULL, 0, 1, 0, NULL); -+ } -+ -+ return result; -+ -+} -+ -+ -+typedef struct { -+ int seq; -+ int block; -+} yaffs_BlockIndex; -+ -+ -+static int yaffs2_ybicmp(const void *a, const void *b) -+{ -+ register int aseq = ((yaffs_BlockIndex *)a)->seq; -+ register int bseq = ((yaffs_BlockIndex *)b)->seq; -+ register int ablock = ((yaffs_BlockIndex *)a)->block; -+ register int bblock = ((yaffs_BlockIndex *)b)->block; -+ if (aseq == bseq) -+ return ablock - bblock; -+ else -+ return aseq - bseq; -+} -+ -+int yaffs2_scan_backwards(yaffs_dev_t *dev) -+{ -+ yaffs_ext_tags tags; -+ int blk; -+ int blockIterator; -+ int startIterator; -+ int endIterator; -+ int nBlocksToScan = 0; -+ -+ int chunk; -+ int result; -+ int c; -+ int deleted; -+ yaffs_block_state_t state; -+ yaffs_obj_t *hard_list = NULL; -+ yaffs_block_info_t *bi; -+ __u32 seq_number; -+ yaffs_obj_header *oh; -+ yaffs_obj_t *in; -+ yaffs_obj_t *parent; -+ int nBlocks = dev->internal_end_block - dev->internal_start_block + 1; -+ int itsUnlinked; -+ __u8 *chunkData; -+ -+ int file_size; -+ int is_shrink; -+ int foundChunksInBlock; -+ int equiv_id; -+ int alloc_failed = 0; -+ -+ -+ yaffs_BlockIndex *blockIndex = NULL; -+ int altBlockIndex = 0; -+ -+ T(YAFFS_TRACE_SCAN, -+ (TSTR -+ ("yaffs2_scan_backwards starts intstartblk %d intendblk %d..." -+ TENDSTR), dev->internal_start_block, dev->internal_end_block)); -+ -+ -+ dev->seq_number = YAFFS_LOWEST_SEQUENCE_NUMBER; -+ -+ blockIndex = YMALLOC(nBlocks * sizeof(yaffs_BlockIndex)); -+ -+ if (!blockIndex) { -+ blockIndex = YMALLOC_ALT(nBlocks * sizeof(yaffs_BlockIndex)); -+ altBlockIndex = 1; -+ } -+ -+ if (!blockIndex) { -+ T(YAFFS_TRACE_SCAN, -+ (TSTR("yaffs2_scan_backwards() could not allocate block index!" TENDSTR))); -+ return YAFFS_FAIL; -+ } -+ -+ dev->blocks_in_checkpt = 0; -+ -+ chunkData = yaffs_get_temp_buffer(dev, __LINE__); -+ -+ /* Scan all the blocks to determine their state */ -+ bi = dev->block_info; -+ for (blk = dev->internal_start_block; blk <= dev->internal_end_block; blk++) { -+ yaffs_clear_chunk_bits(dev, blk); -+ bi->pages_in_use = 0; -+ bi->soft_del_pages = 0; -+ -+ yaffs_query_init_block_state(dev, blk, &state, &seq_number); -+ -+ bi->block_state = state; -+ bi->seq_number = seq_number; -+ -+ if (bi->seq_number == YAFFS_SEQUENCE_CHECKPOINT_DATA) -+ bi->block_state = state = YAFFS_BLOCK_STATE_CHECKPOINT; -+ if (bi->seq_number == YAFFS_SEQUENCE_BAD_BLOCK) -+ bi->block_state = state = YAFFS_BLOCK_STATE_DEAD; -+ -+ T(YAFFS_TRACE_SCAN_DEBUG, -+ (TSTR("Block scanning block %d state %d seq %d" TENDSTR), blk, -+ state, seq_number)); -+ -+ -+ if (state == YAFFS_BLOCK_STATE_CHECKPOINT) { -+ dev->blocks_in_checkpt++; -+ -+ } else if (state == YAFFS_BLOCK_STATE_DEAD) { -+ T(YAFFS_TRACE_BAD_BLOCKS, -+ (TSTR("block %d is bad" TENDSTR), blk)); -+ } else if (state == YAFFS_BLOCK_STATE_EMPTY) { -+ T(YAFFS_TRACE_SCAN_DEBUG, -+ (TSTR("Block empty " TENDSTR))); -+ dev->n_erased_blocks++; -+ dev->n_free_chunks += dev->param.chunks_per_block; -+ } else if (state == YAFFS_BLOCK_STATE_NEEDS_SCANNING) { -+ -+ /* Determine the highest sequence number */ -+ if (seq_number >= YAFFS_LOWEST_SEQUENCE_NUMBER && -+ seq_number < YAFFS_HIGHEST_SEQUENCE_NUMBER) { -+ -+ blockIndex[nBlocksToScan].seq = seq_number; -+ blockIndex[nBlocksToScan].block = blk; -+ -+ nBlocksToScan++; -+ -+ if (seq_number >= dev->seq_number) -+ dev->seq_number = seq_number; -+ } else { -+ /* TODO: Nasty sequence number! */ -+ T(YAFFS_TRACE_SCAN, -+ (TSTR -+ ("Block scanning block %d has bad sequence number %d" -+ TENDSTR), blk, seq_number)); -+ -+ } -+ } -+ bi++; -+ } -+ -+ T(YAFFS_TRACE_SCAN, -+ (TSTR("%d blocks to be sorted..." TENDSTR), nBlocksToScan)); -+ -+ -+ -+ YYIELD(); -+ -+ /* Sort the blocks by sequence number*/ -+ yaffs_qsort(blockIndex, nBlocksToScan, sizeof(yaffs_BlockIndex), yaffs2_ybicmp); -+ -+ YYIELD(); -+ -+ T(YAFFS_TRACE_SCAN, (TSTR("...done" TENDSTR))); -+ -+ /* Now scan the blocks looking at the data. */ -+ startIterator = 0; -+ endIterator = nBlocksToScan - 1; -+ T(YAFFS_TRACE_SCAN_DEBUG, -+ (TSTR("%d blocks to be scanned" TENDSTR), nBlocksToScan)); -+ -+ /* For each block.... backwards */ -+ for (blockIterator = endIterator; !alloc_failed && blockIterator >= startIterator; -+ blockIterator--) { -+ /* Cooperative multitasking! This loop can run for so -+ long that watchdog timers expire. */ -+ YYIELD(); -+ -+ /* get the block to scan in the correct order */ -+ blk = blockIndex[blockIterator].block; -+ -+ bi = yaffs_get_block_info(dev, blk); -+ -+ -+ state = bi->block_state; -+ -+ deleted = 0; -+ -+ /* For each chunk in each block that needs scanning.... */ -+ foundChunksInBlock = 0; -+ for (c = dev->param.chunks_per_block - 1; -+ !alloc_failed && c >= 0 && -+ (state == YAFFS_BLOCK_STATE_NEEDS_SCANNING || -+ state == YAFFS_BLOCK_STATE_ALLOCATING); c--) { -+ /* Scan backwards... -+ * Read the tags and decide what to do -+ */ -+ -+ chunk = blk * dev->param.chunks_per_block + c; -+ -+ result = yaffs_rd_chunk_tags_nand(dev, chunk, NULL, -+ &tags); -+ -+ /* Let's have a good look at this chunk... */ -+ -+ if (!tags.chunk_used) { -+ /* An unassigned chunk in the block. -+ * If there are used chunks after this one, then -+ * it is a chunk that was skipped due to failing the erased -+ * check. Just skip it so that it can be deleted. -+ * But, more typically, We get here when this is an unallocated -+ * chunk and his means that either the block is empty or -+ * this is the one being allocated from -+ */ -+ -+ if (foundChunksInBlock) { -+ /* This is a chunk that was skipped due to failing the erased check */ -+ } else if (c == 0) { -+ /* We're looking at the first chunk in the block so the block is unused */ -+ state = YAFFS_BLOCK_STATE_EMPTY; -+ dev->n_erased_blocks++; -+ } else { -+ if (state == YAFFS_BLOCK_STATE_NEEDS_SCANNING || -+ state == YAFFS_BLOCK_STATE_ALLOCATING) { -+ if (dev->seq_number == bi->seq_number) { -+ /* this is the block being allocated from */ -+ -+ T(YAFFS_TRACE_SCAN, -+ (TSTR -+ (" Allocating from %d %d" -+ TENDSTR), blk, c)); -+ -+ state = YAFFS_BLOCK_STATE_ALLOCATING; -+ dev->alloc_block = blk; -+ dev->alloc_page = c; -+ dev->alloc_block_finder = blk; -+ } else { -+ /* This is a partially written block that is not -+ * the current allocation block. -+ */ -+ -+ T(YAFFS_TRACE_SCAN, -+ (TSTR("Partially written block %d detected" TENDSTR), -+ blk)); -+ } -+ } -+ } -+ -+ dev->n_free_chunks++; -+ -+ } else if (tags.ecc_result == YAFFS_ECC_RESULT_UNFIXED) { -+ T(YAFFS_TRACE_SCAN, -+ (TSTR(" Unfixed ECC in chunk(%d:%d), chunk ignored"TENDSTR), -+ blk, c)); -+ -+ dev->n_free_chunks++; -+ -+ } else if (tags.obj_id > YAFFS_MAX_OBJECT_ID || -+ tags.chunk_id > YAFFS_MAX_CHUNK_ID || -+ (tags.chunk_id > 0 && tags.n_bytes > dev->data_bytes_per_chunk) || -+ tags.seq_number != bi->seq_number ) { -+ T(YAFFS_TRACE_SCAN, -+ (TSTR("Chunk (%d:%d) with bad tags:obj = %d, chunk_id = %d, n_bytes = %d, ignored"TENDSTR), -+ blk, c,tags.obj_id, tags.chunk_id, tags.n_bytes)); -+ -+ dev->n_free_chunks++; -+ -+ } else if (tags.chunk_id > 0) { -+ /* chunk_id > 0 so it is a data chunk... */ -+ unsigned int endpos; -+ __u32 chunkBase = -+ (tags.chunk_id - 1) * dev->data_bytes_per_chunk; -+ -+ foundChunksInBlock = 1; -+ -+ -+ yaffs_set_chunk_bit(dev, blk, c); -+ bi->pages_in_use++; -+ -+ in = yaffs_find_or_create_by_number(dev, -+ tags. -+ obj_id, -+ YAFFS_OBJECT_TYPE_FILE); -+ if (!in) { -+ /* Out of memory */ -+ alloc_failed = 1; -+ } -+ -+ if (in && -+ in->variant_type == YAFFS_OBJECT_TYPE_FILE -+ && chunkBase < in->variant.file_variant.shrink_size) { -+ /* This has not been invalidated by a resize */ -+ if (!yaffs_put_chunk_in_file(in, tags.chunk_id, chunk, -1)) { -+ alloc_failed = 1; -+ } -+ -+ /* File size is calculated by looking at the data chunks if we have not -+ * seen an object header yet. Stop this practice once we find an object header. -+ */ -+ endpos = chunkBase + tags.n_bytes; -+ -+ if (!in->valid && /* have not got an object header yet */ -+ in->variant.file_variant.scanned_size < endpos) { -+ in->variant.file_variant.scanned_size = endpos; -+ in->variant.file_variant.file_size = endpos; -+ } -+ -+ } else if (in) { -+ /* This chunk has been invalidated by a resize, or a past file deletion -+ * so delete the chunk*/ -+ yaffs_chunk_del(dev, chunk, 1, __LINE__); -+ -+ } -+ } else { -+ /* chunk_id == 0, so it is an ObjectHeader. -+ * Thus, we read in the object header and make the object -+ */ -+ foundChunksInBlock = 1; -+ -+ yaffs_set_chunk_bit(dev, blk, c); -+ bi->pages_in_use++; -+ -+ oh = NULL; -+ in = NULL; -+ -+ if (tags.extra_available) { -+ in = yaffs_find_or_create_by_number(dev, -+ tags.obj_id, -+ tags.extra_obj_type); -+ if (!in) -+ alloc_failed = 1; -+ } -+ -+ if (!in || -+ (!in->valid && dev->param.disable_lazy_load) || -+ tags.extra_shadows || -+ (!in->valid && -+ (tags.obj_id == YAFFS_OBJECTID_ROOT || -+ tags.obj_id == YAFFS_OBJECTID_LOSTNFOUND))) { -+ -+ /* If we don't have valid info then we need to read the chunk -+ * TODO In future we can probably defer reading the chunk and -+ * living with invalid data until needed. -+ */ -+ -+ result = yaffs_rd_chunk_tags_nand(dev, -+ chunk, -+ chunkData, -+ NULL); -+ -+ oh = (yaffs_obj_header *) chunkData; -+ -+ if (dev->param.inband_tags) { -+ /* Fix up the header if they got corrupted by inband tags */ -+ oh->shadows_obj = oh->inband_shadowed_obj_id; -+ oh->is_shrink = oh->inband_is_shrink; -+ } -+ -+ if (!in) { -+ in = yaffs_find_or_create_by_number(dev, tags.obj_id, oh->type); -+ if (!in) -+ alloc_failed = 1; -+ } -+ -+ } -+ -+ if (!in) { -+ /* TODO Hoosterman we have a problem! */ -+ T(YAFFS_TRACE_ERROR, -+ (TSTR -+ ("yaffs tragedy: Could not make object for object %d at chunk %d during scan" -+ TENDSTR), tags.obj_id, chunk)); -+ continue; -+ } -+ -+ if (in->valid) { -+ /* We have already filled this one. -+ * We have a duplicate that will be discarded, but -+ * we first have to suck out resize info if it is a file. -+ */ -+ -+ if ((in->variant_type == YAFFS_OBJECT_TYPE_FILE) && -+ ((oh && -+ oh->type == YAFFS_OBJECT_TYPE_FILE) || -+ (tags.extra_available && -+ tags.extra_obj_type == YAFFS_OBJECT_TYPE_FILE))) { -+ __u32 thisSize = -+ (oh) ? oh->file_size : tags. -+ extra_length; -+ __u32 parent_obj_id = -+ (oh) ? oh-> -+ parent_obj_id : tags. -+ extra_parent_id; -+ -+ -+ is_shrink = -+ (oh) ? oh->is_shrink : tags. -+ extra_is_shrink; -+ -+ /* If it is deleted (unlinked at start also means deleted) -+ * we treat the file size as being zeroed at this point. -+ */ -+ if (parent_obj_id == -+ YAFFS_OBJECTID_DELETED -+ || parent_obj_id == -+ YAFFS_OBJECTID_UNLINKED) { -+ thisSize = 0; -+ is_shrink = 1; -+ } -+ -+ if (is_shrink && in->variant.file_variant.shrink_size > thisSize) -+ in->variant.file_variant.shrink_size = thisSize; -+ -+ if (is_shrink) -+ bi->has_shrink_hdr = 1; -+ -+ } -+ /* Use existing - destroy this one. */ -+ yaffs_chunk_del(dev, chunk, 1, __LINE__); -+ -+ } -+ -+ if (!in->valid && in->variant_type != -+ (oh ? oh->type : tags.extra_obj_type)) -+ T(YAFFS_TRACE_ERROR, ( -+ TSTR("yaffs tragedy: Bad object type, " -+ TCONT("%d != %d, for object %d at chunk ") -+ TCONT("%d during scan") -+ TENDSTR), oh ? -+ oh->type : tags.extra_obj_type, -+ in->variant_type, tags.obj_id, -+ chunk)); -+ -+ if (!in->valid && -+ (tags.obj_id == YAFFS_OBJECTID_ROOT || -+ tags.obj_id == -+ YAFFS_OBJECTID_LOSTNFOUND)) { -+ /* We only load some info, don't fiddle with directory structure */ -+ in->valid = 1; -+ -+ if (oh) { -+ -+ in->yst_mode = oh->yst_mode; -+#ifdef CONFIG_YAFFS_WINCE -+ in->win_atime[0] = oh->win_atime[0]; -+ in->win_ctime[0] = oh->win_ctime[0]; -+ in->win_mtime[0] = oh->win_mtime[0]; -+ in->win_atime[1] = oh->win_atime[1]; -+ in->win_ctime[1] = oh->win_ctime[1]; -+ in->win_mtime[1] = oh->win_mtime[1]; -+#else -+ in->yst_uid = oh->yst_uid; -+ in->yst_gid = oh->yst_gid; -+ in->yst_atime = oh->yst_atime; -+ in->yst_mtime = oh->yst_mtime; -+ in->yst_ctime = oh->yst_ctime; -+ in->yst_rdev = oh->yst_rdev; -+ -+ in->lazy_loaded = 0; -+ -+#endif -+ } else -+ in->lazy_loaded = 1; -+ -+ in->hdr_chunk = chunk; -+ -+ } else if (!in->valid) { -+ /* we need to load this info */ -+ -+ in->valid = 1; -+ in->hdr_chunk = chunk; -+ -+ if (oh) { -+ in->variant_type = oh->type; -+ -+ in->yst_mode = oh->yst_mode; -+#ifdef CONFIG_YAFFS_WINCE -+ in->win_atime[0] = oh->win_atime[0]; -+ in->win_ctime[0] = oh->win_ctime[0]; -+ in->win_mtime[0] = oh->win_mtime[0]; -+ in->win_atime[1] = oh->win_atime[1]; -+ in->win_ctime[1] = oh->win_ctime[1]; -+ in->win_mtime[1] = oh->win_mtime[1]; -+#else -+ in->yst_uid = oh->yst_uid; -+ in->yst_gid = oh->yst_gid; -+ in->yst_atime = oh->yst_atime; -+ in->yst_mtime = oh->yst_mtime; -+ in->yst_ctime = oh->yst_ctime; -+ in->yst_rdev = oh->yst_rdev; -+#endif -+ -+ if (oh->shadows_obj > 0) -+ yaffs_handle_shadowed_obj(dev, -+ oh-> -+ shadows_obj, -+ 1); -+ -+ -+ -+ yaffs_set_obj_name_from_oh(in, oh); -+ parent = -+ yaffs_find_or_create_by_number -+ (dev, oh->parent_obj_id, -+ YAFFS_OBJECT_TYPE_DIRECTORY); -+ -+ file_size = oh->file_size; -+ is_shrink = oh->is_shrink; -+ equiv_id = oh->equiv_id; -+ -+ } else { -+ in->variant_type = tags.extra_obj_type; -+ parent = -+ yaffs_find_or_create_by_number -+ (dev, tags.extra_parent_id, -+ YAFFS_OBJECT_TYPE_DIRECTORY); -+ file_size = tags.extra_length; -+ is_shrink = tags.extra_is_shrink; -+ equiv_id = tags.extra_equiv_id; -+ in->lazy_loaded = 1; -+ -+ } -+ in->dirty = 0; -+ -+ if (!parent) -+ alloc_failed = 1; -+ -+ /* directory stuff... -+ * hook up to parent -+ */ -+ -+ if (parent && parent->variant_type == -+ YAFFS_OBJECT_TYPE_UNKNOWN) { -+ /* Set up as a directory */ -+ parent->variant_type = -+ YAFFS_OBJECT_TYPE_DIRECTORY; -+ YINIT_LIST_HEAD(&parent->variant. -+ dir_variant. -+ children); -+ } else if (!parent || parent->variant_type != -+ YAFFS_OBJECT_TYPE_DIRECTORY) { -+ /* Hoosterman, another problem.... -+ * We're trying to use a non-directory as a directory -+ */ -+ -+ T(YAFFS_TRACE_ERROR, -+ (TSTR -+ ("yaffs tragedy: attempting to use non-directory as a directory in scan. Put in lost+found." -+ TENDSTR))); -+ parent = dev->lost_n_found; -+ } -+ -+ yaffs_add_obj_to_dir(parent, in); -+ -+ itsUnlinked = (parent == dev->del_dir) || -+ (parent == dev->unlinked_dir); -+ -+ if (is_shrink) { -+ /* Mark the block as having a shrinkHeader */ -+ bi->has_shrink_hdr = 1; -+ } -+ -+ /* Note re hardlinks. -+ * Since we might scan a hardlink before its equivalent object is scanned -+ * we put them all in a list. -+ * After scanning is complete, we should have all the objects, so we run -+ * through this list and fix up all the chains. -+ */ -+ -+ switch (in->variant_type) { -+ case YAFFS_OBJECT_TYPE_UNKNOWN: -+ /* Todo got a problem */ -+ break; -+ case YAFFS_OBJECT_TYPE_FILE: -+ -+ if (in->variant.file_variant. -+ scanned_size < file_size) { -+ /* This covers the case where the file size is greater -+ * than where the data is -+ * This will happen if the file is resized to be larger -+ * than its current data extents. -+ */ -+ in->variant.file_variant.file_size = file_size; -+ in->variant.file_variant.scanned_size = file_size; -+ } -+ -+ if (in->variant.file_variant.shrink_size > file_size) -+ in->variant.file_variant.shrink_size = file_size; -+ -+ -+ break; -+ case YAFFS_OBJECT_TYPE_HARDLINK: -+ if (!itsUnlinked) { -+ in->variant.hardlink_variant.equiv_id = -+ equiv_id; -+ in->hard_links.next = -+ (struct ylist_head *) hard_list; -+ hard_list = in; -+ } -+ break; -+ case YAFFS_OBJECT_TYPE_DIRECTORY: -+ /* Do nothing */ -+ break; -+ case YAFFS_OBJECT_TYPE_SPECIAL: -+ /* Do nothing */ -+ break; -+ case YAFFS_OBJECT_TYPE_SYMLINK: -+ if (oh) { -+ in->variant.symlink_variant.alias = -+ yaffs_clone_str(oh->alias); -+ if (!in->variant.symlink_variant.alias) -+ alloc_failed = 1; -+ } -+ break; -+ } -+ -+ } -+ -+ } -+ -+ } /* End of scanning for each chunk */ -+ -+ if (state == YAFFS_BLOCK_STATE_NEEDS_SCANNING) { -+ /* If we got this far while scanning, then the block is fully allocated. */ -+ state = YAFFS_BLOCK_STATE_FULL; -+ } -+ -+ -+ bi->block_state = state; -+ -+ /* Now let's see if it was dirty */ -+ if (bi->pages_in_use == 0 && -+ !bi->has_shrink_hdr && -+ bi->block_state == YAFFS_BLOCK_STATE_FULL) { -+ yaffs_block_became_dirty(dev, blk); -+ } -+ -+ } -+ -+ yaffs_skip_rest_of_block(dev); -+ -+ if (altBlockIndex) -+ YFREE_ALT(blockIndex); -+ else -+ YFREE(blockIndex); -+ -+ /* Ok, we've done all the scanning. -+ * Fix up the hard link chains. -+ * We should now have scanned all the objects, now it's time to add these -+ * hardlinks. -+ */ -+ yaffs_link_fixup(dev, hard_list); -+ -+ -+ yaffs_release_temp_buffer(dev, chunkData, __LINE__); -+ -+ if (alloc_failed) -+ return YAFFS_FAIL; -+ -+ T(YAFFS_TRACE_SCAN, (TSTR("yaffs2_scan_backwards ends" TENDSTR))); -+ -+ return YAFFS_OK; -+} ---- /dev/null -+++ b/fs/yaffs2/yaffs_yaffs2.h -@@ -0,0 +1,36 @@ -+/* -+ * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. -+ * -+ * Copyright (C) 2002-2010 Aleph One Ltd. -+ * for Toby Churchill Ltd and Brightstar Engineering -+ * -+ * Created by Charles Manning <charles@aleph1.co.uk> -+ * -+ * This program is free software; you can redistribute it and/or modify -+ * it under the terms of the GNU General Public License version 2 as -+ * published by the Free Software Foundation. -+ */ -+ -+#ifndef __YAFFS_YAFFS2_H__ -+#define __YAFFS_YAFFS2_H__ -+ -+#include "yaffs_guts.h" -+ -+void yaffs_calc_oldest_dirty_seq(yaffs_dev_t *dev); -+void yaffs2_find_oldest_dirty_seq(yaffs_dev_t *dev); -+void yaffs2_clear_oldest_dirty_seq(yaffs_dev_t *dev, yaffs_block_info_t *bi); -+void yaffs2_update_oldest_dirty_seq(yaffs_dev_t *dev, unsigned block_no, yaffs_block_info_t *bi); -+int yaffs_block_ok_for_gc(yaffs_dev_t *dev, yaffs_block_info_t *bi); -+__u32 yaffs2_find_refresh_block(yaffs_dev_t *dev); -+int yaffs2_checkpt_required(yaffs_dev_t *dev); -+int yaffs_calc_checkpt_blocks_required(yaffs_dev_t *dev); -+ -+ -+void yaffs2_checkpt_invalidate(yaffs_dev_t *dev); -+int yaffs2_checkpt_save(yaffs_dev_t *dev); -+int yaffs2_checkpt_restore(yaffs_dev_t *dev); -+ -+int yaffs2_handle_hole(yaffs_obj_t *obj, loff_t new_size); -+int yaffs2_scan_backwards(yaffs_dev_t *dev); -+ -+#endif ---- a/fs/yaffs2/yportenv.h -+++ b/fs/yaffs2/yportenv.h -@@ -1,7 +1,7 @@ - /* - * YAFFS: Yet another Flash File System . A NAND-flash specific file system. - * -- * Copyright (C) 2002-2007 Aleph One Ltd. -+ * Copyright (C) 2002-2010 Aleph One Ltd. - * for Toby Churchill Ltd and Brightstar Engineering - * - * Created by Charles Manning <charles@aleph1.co.uk> -@@ -41,12 +41,14 @@ - #if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 19)) - #include <linux/config.h> - #endif -+ - #include <linux/kernel.h> - #include <linux/mm.h> - #include <linux/sched.h> - #include <linux/string.h> - #include <linux/slab.h> - #include <linux/vmalloc.h> -+#include <linux/xattr.h> - - #define YCHAR char - #define YUCHAR unsigned char -@@ -55,11 +57,11 @@ - #define yaffs_strcpy(a, b) strcpy(a, b) - #define yaffs_strncpy(a, b, c) strncpy(a, b, c) - #define yaffs_strncmp(a, b, c) strncmp(a, b, c) --#define yaffs_strlen(s) strlen(s) -+#define yaffs_strnlen(s,m) strnlen(s,m) - #define yaffs_sprintf sprintf - #define yaffs_toupper(a) toupper(a) - --#define Y_INLINE inline -+#define Y_INLINE __inline__ - - #define YAFFS_LOSTNFOUND_NAME "lost+found" - #define YAFFS_LOSTNFOUND_PREFIX "obj" -@@ -71,11 +73,11 @@ - #define YFREE_ALT(x) vfree(x) - #define YMALLOC_DMA(x) YMALLOC(x) - --/* KR - added for use in scan so processes aren't blocked indefinitely. */ - #define YYIELD() schedule() -+#define Y_DUMP_STACK() dump_stack() - --#define YAFFS_ROOT_MODE 0666 --#define YAFFS_LOSTNFOUND_MODE 0666 -+#define YAFFS_ROOT_MODE 0755 -+#define YAFFS_LOSTNFOUND_MODE 0700 - - #if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) - #define Y_CURRENT_TIME CURRENT_TIME.tv_sec -@@ -85,19 +87,14 @@ - #define Y_TIME_CONVERT(x) (x) - #endif - --#define yaffs_SumCompare(x, y) ((x) == (y)) -+#define yaffs_sum_cmp(x, y) ((x) == (y)) - #define yaffs_strcmp(a, b) strcmp(a, b) - - #define TENDSTR "\n" --#define TSTR(x) KERN_WARNING x -+#define TSTR(x) KERN_DEBUG x - #define TCONT(x) x - #define TOUT(p) printk p - --#define yaffs_trace(mask, fmt, args...) \ -- do { if ((mask) & (yaffs_traceMask|YAFFS_TRACE_ERROR)) \ -- printk(KERN_WARNING "yaffs: " fmt, ## args); \ -- } while (0) -- - #define compile_time_assertion(assertion) \ - ({ int x = __builtin_choose_expr(assertion, 0, (void)0); (void) x; }) - -@@ -116,7 +113,6 @@ - #include "stdio.h" - #include "string.h" - --#include "devextras.h" - - #define YMALLOC(x) malloc(x) - #define YFREE(x) free(x) -@@ -129,7 +125,7 @@ - #define yaffs_strcat(a, b) strcat(a, b) - #define yaffs_strcpy(a, b) strcpy(a, b) - #define yaffs_strncpy(a, b, c) strncpy(a, b, c) --#define yaffs_strlen(s) strlen(s) -+#define yaffs_strnlen(s,m) strnlen(s,m) - #define yaffs_sprintf sprintf - #define yaffs_toupper(a) toupper(a) - -@@ -146,10 +142,10 @@ - #define YAFFS_LOSTNFOUND_PREFIX "obj" - /* #define YPRINTF(x) printf x */ - --#define YAFFS_ROOT_MODE 0666 --#define YAFFS_LOSTNFOUND_MODE 0666 -+#define YAFFS_ROOT_MODE 0755 -+#define YAFFS_LOSTNFOUND_MODE 0700 - --#define yaffs_SumCompare(x, y) ((x) == (y)) -+#define yaffs_sum_cmp(x, y) ((x) == (y)) - #define yaffs_strcmp(a, b) strcmp(a, b) - - #else -@@ -158,46 +154,180 @@ - - #endif - --/* see yaffs_fs.c */ --extern unsigned int yaffs_traceMask; --extern unsigned int yaffs_wr_attempts; -+#if defined(CONFIG_YAFFS_DIRECT) || defined(CONFIG_YAFFS_WINCE) - --/* -- * Tracing flags. -- * The flags masked in YAFFS_TRACE_ALWAYS are always traced. -- */ -+#ifdef CONFIG_YAFFSFS_PROVIDE_VALUES -+ -+#ifndef O_RDONLY -+#define O_RDONLY 00 -+#endif -+ -+#ifndef O_WRONLY -+#define O_WRONLY 01 -+#endif -+ -+#ifndef O_RDWR -+#define O_RDWR 02 -+#endif -+ -+#ifndef O_CREAT -+#define O_CREAT 0100 -+#endif -+ -+#ifndef O_EXCL -+#define O_EXCL 0200 -+#endif -+ -+#ifndef O_TRUNC -+#define O_TRUNC 01000 -+#endif -+ -+#ifndef O_APPEND -+#define O_APPEND 02000 -+#endif -+ -+#ifndef SEEK_SET -+#define SEEK_SET 0 -+#endif -+ -+#ifndef SEEK_CUR -+#define SEEK_CUR 1 -+#endif -+ -+#ifndef SEEK_END -+#define SEEK_END 2 -+#endif -+ -+#ifndef EBUSY -+#define EBUSY 16 -+#endif -+ -+#ifndef ENODEV -+#define ENODEV 19 -+#endif -+ -+#ifndef EINVAL -+#define EINVAL 22 -+#endif -+ -+#ifndef EBADF -+#define EBADF 9 -+#endif -+ -+#ifndef EACCES -+#define EACCES 13 -+#endif -+ -+#ifndef EXDEV -+#define EXDEV 18 -+#endif -+ -+#ifndef ENOENT -+#define ENOENT 2 -+#endif -+ -+#ifndef ENOSPC -+#define ENOSPC 28 -+#endif -+ -+#ifndef ERANGE -+#define ERANGE 34 -+#endif -+ -+#ifndef ENODATA -+#define ENODATA 61 -+#endif -+ -+#ifndef ENOTEMPTY -+#define ENOTEMPTY 39 -+#endif -+ -+#ifndef ENAMETOOLONG -+#define ENAMETOOLONG 36 -+#endif -+ -+#ifndef ENOMEM -+#define ENOMEM 12 -+#endif -+ -+#ifndef EEXIST -+#define EEXIST 17 -+#endif -+ -+#ifndef ENOTDIR -+#define ENOTDIR 20 -+#endif -+ -+#ifndef EISDIR -+#define EISDIR 21 -+#endif -+ -+ -+// Mode flags -+ -+#ifndef S_IFMT -+#define S_IFMT 0170000 -+#endif -+ -+#ifndef S_IFLNK -+#define S_IFLNK 0120000 -+#endif - --#define YAFFS_TRACE_OS 0x00000002 --#define YAFFS_TRACE_ALLOCATE 0x00000004 --#define YAFFS_TRACE_SCAN 0x00000008 --#define YAFFS_TRACE_BAD_BLOCKS 0x00000010 --#define YAFFS_TRACE_ERASE 0x00000020 --#define YAFFS_TRACE_GC 0x00000040 --#define YAFFS_TRACE_WRITE 0x00000080 --#define YAFFS_TRACE_TRACING 0x00000100 --#define YAFFS_TRACE_DELETION 0x00000200 --#define YAFFS_TRACE_BUFFERS 0x00000400 --#define YAFFS_TRACE_NANDACCESS 0x00000800 --#define YAFFS_TRACE_GC_DETAIL 0x00001000 --#define YAFFS_TRACE_SCAN_DEBUG 0x00002000 --#define YAFFS_TRACE_MTD 0x00004000 --#define YAFFS_TRACE_CHECKPOINT 0x00008000 -- --#define YAFFS_TRACE_VERIFY 0x00010000 --#define YAFFS_TRACE_VERIFY_NAND 0x00020000 --#define YAFFS_TRACE_VERIFY_FULL 0x00040000 --#define YAFFS_TRACE_VERIFY_ALL 0x000F0000 -- -- --#define YAFFS_TRACE_ERROR 0x40000000 --#define YAFFS_TRACE_BUG 0x80000000 --#define YAFFS_TRACE_ALWAYS 0xF0000000 -+#ifndef S_IFDIR -+#define S_IFDIR 0040000 -+#endif -+ -+#ifndef S_IFREG -+#define S_IFREG 0100000 -+#endif - -+#ifndef S_IREAD -+#define S_IREAD 0000400 -+#endif -+ -+#ifndef S_IWRITE -+#define S_IWRITE 0000200 -+#endif - --#define T(mask, p) do { if ((mask) & (yaffs_traceMask | YAFFS_TRACE_ALWAYS)) TOUT(p); } while (0) -+#ifndef S_IEXEC -+#define S_IEXEC 0000100 -+#endif -+ -+#ifndef XATTR_CREATE -+#define XATTR_CREATE 1 -+#endif -+ -+#ifndef XATTR_REPLACE -+#define XATTR_REPLACE 2 -+#endif -+ -+#ifndef R_OK -+#define R_OK 4 -+#define W_OK 2 -+#define X_OK 1 -+#define F_OK 0 -+#endif -+ -+#else -+#include <errno.h> -+#include <sys/stat.h> -+#include <fcntl.h> -+#endif -+ -+#endif -+ -+#ifndef Y_DUMP_STACK -+#define Y_DUMP_STACK() do { } while (0) -+#endif - - #ifndef YBUG --#define YBUG() do {T(YAFFS_TRACE_BUG, (TSTR("==>> yaffs bug: " __FILE__ " %d" TENDSTR), __LINE__)); } while (0) -+#define YBUG() do {\ -+ T(YAFFS_TRACE_BUG,\ -+ (TSTR("==>> yaffs bug: " __FILE__ " %d" TENDSTR),\ -+ __LINE__));\ -+ Y_DUMP_STACK();\ -+} while (0) - #endif - -+ - #endif |