diff options
| author | juhosg <juhosg@3c298f89-4303-0410-b956-a3cf2f4a3e73> | 2013-12-16 07:51:19 +0000 |
|---|---|---|
| committer | juhosg <juhosg@3c298f89-4303-0410-b956-a3cf2f4a3e73> | 2013-12-16 07:51:19 +0000 |
| commit | 1750e3ed7f2bcc34ec7276f60efe94392515f564 (patch) | |
| tree | c3baa813b2d49c1e5302c7561a89be81af5b3fe0 /target/linux/generic/files | |
| parent | e9d74a53cfa01272a460682c604ee09d21b90da6 (diff) | |
kernel: update yaffs code
Use the latest version of the yaffs code. Fetched from the
yaffs2 git tree and it is based on the following commit:
commit bc76682d93955cfb33051beb503ad9f8a5450578
Merge: 3a8580e ffa781d
Author: Charles Manning <cdhmanning@gmail.com>
Date: Thu Jul 11 17:46:25 2013 +1200
Merge branch 'master' of ssh://www.aleph1.co.uk/home/aleph1/git/yaffs2
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@39084 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'target/linux/generic/files')
55 files changed, 8848 insertions, 10499 deletions
diff --git a/target/linux/generic/files/fs/yaffs2/Kconfig b/target/linux/generic/files/fs/yaffs2/Kconfig index 7b3988c3a0..408570fc7a 100644 --- a/target/linux/generic/files/fs/yaffs2/Kconfig +++ b/target/linux/generic/files/fs/yaffs2/Kconfig @@ -1,23 +1,23 @@ # -# YAFFS file system configurations +# yaffs file system configurations # config YAFFS_FS - tristate "YAFFS2 file system support" + tristate "yaffs2 file system support" default n depends on MTD_BLOCK select YAFFS_YAFFS1 select YAFFS_YAFFS2 help - YAFFS2, or Yet Another Flash Filing System, is a filing system + yaffs2, or Yet Another Flash File System, is a file system optimised for NAND Flash chips. - To compile the YAFFS2 file system support as a module, choose M + To compile the yaffs2 file system support as a module, choose M here: the module will be called yaffs2. If unsure, say N. - Further information on YAFFS2 is available at + Further information on yaffs2 is available at <http://www.aleph1.co.uk/yaffs/>. config YAFFS_YAFFS1 @@ -25,7 +25,7 @@ config YAFFS_YAFFS1 depends on YAFFS_FS default y help - Enable YAFFS1 support -- yaffs for 512 byte / page devices + Enable yaffs1 support -- yaffs for 512 byte / page devices Not needed for 2K-page devices. @@ -49,11 +49,11 @@ config YAFFS_9BYTE_TAGS If unsure, say N. config YAFFS_DOES_ECC - bool "Lets Yaffs do its own ECC" + bool "Lets yaffs do its own ECC" depends on YAFFS_FS && YAFFS_YAFFS1 && !YAFFS_9BYTE_TAGS default n help - This enables Yaffs to use its own ECC functions instead of using + This enables yaffs to use its own ECC functions instead of using the ones from the generic MTD-NAND driver. If unsure, say N. @@ -74,7 +74,7 @@ config YAFFS_YAFFS2 depends on YAFFS_FS default y help - Enable YAFFS2 support -- yaffs for >= 2K bytes per page devices + Enable yaffs2 support -- yaffs for >= 2K bytes per page devices If unsure, say Y. @@ -91,39 +91,23 @@ config YAFFS_AUTO_YAFFS2 If unsure, say Y. config YAFFS_DISABLE_TAGS_ECC - bool "Disable YAFFS from doing ECC on tags by default" + bool "Disable yaffs from doing ECC on tags by default" depends on YAFFS_FS && YAFFS_YAFFS2 default n help - This defaults Yaffs to using its own ECC calculations on tags instead of + 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. - -config YAFFS_DISABLE_WIDE_TNODES - bool "Turn off wide tnodes" - depends on YAFFS_FS - default n - help - Wide tnodes are only used for NAND arrays >=32MB for 512-byte - page devices and >=128MB for 2k page devices. They use slightly - more RAM but are faster since they eliminate chunk group - searching. - - Setting this to 'y' will force tnode width to 16 bits and save - memory but make large arrays slower. - - If unsure, say N. - config YAFFS_ALWAYS_CHECK_CHUNK_ERASED bool "Force chunk erase check" depends on YAFFS_FS default n help - Normally YAFFS only checks chunks before writing until an erased + Normally yaffs only checks chunks before writing until an erased chunk is found. This helps to detect any partially written chunks that might have happened due to power loss. @@ -136,17 +120,6 @@ config YAFFS_ALWAYS_CHECK_CHUNK_ERASED If unsure, say Y. -config YAFFS_SHORT_NAMES_IN_RAM - bool "Cache short names in RAM" - depends on YAFFS_FS - default y - help - If this config is set, then short names are stored with the - yaffs_Object. This costs an extra 16 bytes of RAM per object, - 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 @@ -177,7 +150,17 @@ config YAFFS_DISABLE_BACKGROUND If this is set, then background processing is disabled. Background processing makes many foreground activities faster. - If unsure, say N. + If unsure, say N. + +config YAFFS_DISABLE_BAD_BLOCK_MARKING + bool "Disable yaffs2 bad block marking" + depends on YAFFS_FS + default n + help + Useful during early flash bring up to prevent problems causing + lots of bad block marking. + + If unsure, say N. config YAFFS_XATTR bool "Enable yaffs2 xattr support" @@ -186,5 +169,3 @@ config YAFFS_XATTR 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 fbdbd4a019..f9a9fb1bfd 100644 --- a/target/linux/generic/files/fs/yaffs2/Makefile +++ b/target/linux/generic/files/fs/yaffs2/Makefile @@ -4,14 +4,15 @@ obj-$(CONFIG_YAFFS_FS) += yaffs.o -yaffs-y := yaffs_ecc.o yaffs_vfs_glue.o yaffs_guts.o yaffs_checkptrw.o +yaffs-y := yaffs_ecc.o yaffs_vfs.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_tagscompat.o yaffs_tagsmarshall.o +yaffs-y += yaffs_mtdif.o +yaffs-y += yaffs_nameval.o yaffs_attribs.o yaffs-y += yaffs_allocator.o yaffs-y += yaffs_yaffs1.o yaffs-y += yaffs_yaffs2.o yaffs-y += yaffs_bitmap.o +yaffs-y += yaffs_summary.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 1ad01d02bc..0be479d66c 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 GIT tree. URL: git://www.aleph1.co.uk/yaffs2 -Version: 7396445d7d0d13469b9505791114b9dc6b76ffe4 (2010-10-20) +Version: bc76682d93955cfb33051beb503ad9f8a5450578 (2013-12-03) diff --git a/target/linux/generic/files/fs/yaffs2/devextras.h b/target/linux/generic/files/fs/yaffs2/devextras.h deleted file mode 100644 index ce30c820d9..0000000000 --- a/target/linux/generic/files/fs/yaffs2/devextras.h +++ /dev/null @@ -1,101 +0,0 @@ -/* - * 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 __EXTRAS_H__ -#define __EXTRAS_H__ - - -#include "yportenv.h" - -#if !(defined __KERNEL__) - -/* Definition of types */ -typedef unsigned char __u8; -typedef unsigned short __u16; -typedef unsigned __u32; - -#endif - - -#if !(defined __KERNEL__) - - -#ifndef WIN32 -#include <sys/stat.h> -#endif - - -#ifdef CONFIG_YAFFS_PROVIDE_DEFS -/* File types */ - - -#define DT_UNKNOWN 0 -#define DT_FIFO 1 -#define DT_CHR 2 -#define DT_DIR 4 -#define DT_BLK 6 -#define DT_REG 8 -#define DT_LNK 10 -#define DT_SOCK 12 -#define DT_WHT 14 - - -#ifndef WIN32 -#include <sys/stat.h> -#endif - -/* - * Attribute flags. These should be or-ed together to figure out what - * has been changed! - */ -#define ATTR_MODE 1 -#define ATTR_UID 2 -#define ATTR_GID 4 -#define ATTR_SIZE 8 -#define ATTR_ATIME 16 -#define ATTR_MTIME 32 -#define ATTR_CTIME 64 - -struct iattr { - unsigned int ia_valid; - unsigned ia_mode; - unsigned ia_uid; - unsigned ia_gid; - unsigned ia_size; - unsigned ia_atime; - unsigned ia_mtime; - unsigned ia_ctime; - unsigned int ia_attr_flags; -}; - -#endif - -#else - -#include <linux/types.h> -#include <linux/fs.h> -#include <linux/stat.h> - -#endif - - -#endif diff --git a/target/linux/generic/files/fs/yaffs2/moduleconfig.h b/target/linux/generic/files/fs/yaffs2/moduleconfig.h deleted file mode 100644 index 4b4d6424cd..0000000000 --- a/target/linux/generic/files/fs/yaffs2/moduleconfig.h +++ /dev/null @@ -1,86 +0,0 @@ -/* - * 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 Martin Fouts <Martin.Fouts@palmsource.com> - * - * 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_CONFIG_H__ -#define __YAFFS_CONFIG_H__ - -#ifdef YAFFS_OUT_OF_TREE - -/* DO NOT UNSET THESE THREE. YAFFS2 will not compile if you do. */ -#define CONFIG_YAFFS_FS -#define CONFIG_YAFFS_YAFFS1 -#define CONFIG_YAFFS_YAFFS2 - -/* These options are independent of each other. Select those that matter. */ - -/* Default: Not selected */ -/* 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: 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: 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 "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 -older-style format. -Note: Use of this option generally requires that MTD's oob layout be -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 page_status byte */ -/* #define CONFIG_YAFFS_9BYTE_TAGS */ - -#endif /* YAFFS_OUT_OF_TREE */ - -#endif /* __YAFFS_CONFIG_H__ */ diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_allocator.c b/target/linux/generic/files/fs/yaffs2/yaffs_allocator.c index c0513d54ec..c8f2861c53 100644 --- a/target/linux/generic/files/fs/yaffs2/yaffs_allocator.c +++ b/target/linux/generic/files/fs/yaffs2/yaffs_allocator.c @@ -1,299 +1,253 @@ /* - * YAFFS: Yet another Flash File System . A NAND-flash specific file system. + * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. * - * Copyright (C) 2002-2010 Aleph One Ltd. + * Copyright (C) 2002-2011 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 + * it under the terms of the GNU General Public License version 2 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 +/* + * Each entry in yaffs_tnode_list and yaffs_obj_list hold blocks + * of approx 100 objects that are themn allocated singly. + * This is basically a simplified slab allocator. + * + * We don't use the Linux slab allocator because slab does not allow + * us to dump all the objects in one hit when we do a umount and tear + * down all the tnodes and objects. slab requires that we first free + * the individual objects. + * + * Once yaffs has been mainlined I shall try to motivate for a change + * to slab to provide the extra features we need here. + */ struct yaffs_tnode_list { struct yaffs_tnode_list *next; - yaffs_tnode_t *tnodes; + struct yaffs_tnode *tnodes; }; -typedef struct yaffs_tnode_list yaffs_tnodelist_t; - -struct yaffs_obj_tList_struct { - yaffs_obj_t *objects; - struct yaffs_obj_tList_struct *next; +struct yaffs_obj_list { + struct yaffs_obj_list *next; + struct yaffs_obj *objects; }; -typedef struct yaffs_obj_tList_struct yaffs_obj_tList; - +struct yaffs_allocator { + int n_tnodes_created; + struct yaffs_tnode *free_tnodes; + int n_free_tnodes; + struct yaffs_tnode_list *alloc_tnode_list; -struct yaffs_AllocatorStruct { - int n_tnodesCreated; - yaffs_tnode_t *freeTnodes; - int nFreeTnodes; - yaffs_tnodelist_t *allocatedTnodeList; + int n_obj_created; + struct list_head free_objs; + int n_free_objects; - int n_objCreated; - yaffs_obj_t *freeObjects; - int nFreeObjects; - - yaffs_obj_tList *allocatedObjectList; + struct yaffs_obj_list *allocated_obj_list; }; -typedef struct yaffs_AllocatorStruct yaffs_Allocator; - - -static void yaffs_deinit_raw_tnodes(yaffs_dev_t *dev) +static void yaffs_deinit_raw_tnodes(struct yaffs_dev *dev) { + struct yaffs_allocator *allocator = + (struct yaffs_allocator *)dev->allocator; + struct yaffs_tnode_list *tmp; - yaffs_Allocator *allocator = (yaffs_Allocator *)dev->allocator; - - yaffs_tnodelist_t *tmp; - - if(!allocator){ - YBUG(); + if (!allocator) { + BUG(); return; } - while (allocator->allocatedTnodeList) { - tmp = allocator->allocatedTnodeList->next; - - YFREE(allocator->allocatedTnodeList->tnodes); - YFREE(allocator->allocatedTnodeList); - allocator->allocatedTnodeList = tmp; + while (allocator->alloc_tnode_list) { + tmp = allocator->alloc_tnode_list->next; + kfree(allocator->alloc_tnode_list->tnodes); + kfree(allocator->alloc_tnode_list); + allocator->alloc_tnode_list = tmp; } - allocator->freeTnodes = NULL; - allocator->nFreeTnodes = 0; - allocator->n_tnodesCreated = 0; + allocator->free_tnodes = NULL; + allocator->n_free_tnodes = 0; + allocator->n_tnodes_created = 0; } -static void yaffs_init_raw_tnodes(yaffs_dev_t *dev) +static void yaffs_init_raw_tnodes(struct yaffs_dev *dev) { - yaffs_Allocator *allocator = dev->allocator; - - if(allocator){ - allocator->allocatedTnodeList = NULL; - allocator->freeTnodes = NULL; - allocator->nFreeTnodes = 0; - allocator->n_tnodesCreated = 0; - } else - YBUG(); + struct yaffs_allocator *allocator = dev->allocator; + + if (!allocator) { + BUG(); + return; + } + + allocator->alloc_tnode_list = NULL; + allocator->free_tnodes = NULL; + allocator->n_free_tnodes = 0; + allocator->n_tnodes_created = 0; } -static int yaffs_create_tnodes(yaffs_dev_t *dev, int n_tnodes) +static int yaffs_create_tnodes(struct yaffs_dev *dev, int n_tnodes) { - yaffs_Allocator *allocator = (yaffs_Allocator *)dev->allocator; + struct yaffs_allocator *allocator = + (struct 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(); + struct yaffs_tnode *new_tnodes; + u8 *mem; + struct yaffs_tnode *curr; + struct yaffs_tnode *next; + struct yaffs_tnode_list *tnl; + + if (!allocator) { + BUG(); return YAFFS_FAIL; } if (n_tnodes < 1) return YAFFS_OK; - /* make these things */ + new_tnodes = kmalloc(n_tnodes * dev->tnode_size, GFP_NOFS); + mem = (u8 *) new_tnodes; - newTnodes = YMALLOC(n_tnodes * dev->tnode_size); - mem = (__u8 *)newTnodes; - - if (!newTnodes) { - T(YAFFS_TRACE_ERROR, - (TSTR("yaffs: Could not allocate Tnodes" TENDSTR))); + if (!new_tnodes) { + yaffs_trace(YAFFS_TRACE_ERROR, + "yaffs: Could not allocate Tnodes"); 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 = (struct yaffs_tnode *)&mem[i * dev->tnode_size]; + next = (struct yaffs_tnode *)&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; + curr = (struct yaffs_tnode *)&mem[(n_tnodes - 1) * dev->tnode_size]; + curr->internal[0] = allocator->free_tnodes; + allocator->free_tnodes = (struct yaffs_tnode *)mem; - allocator->nFreeTnodes += n_tnodes; - allocator->n_tnodesCreated += n_tnodes; + allocator->n_free_tnodes += n_tnodes; + allocator->n_tnodes_created += 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)); + tnl = kmalloc(sizeof(struct yaffs_tnode_list), GFP_NOFS); if (!tnl) { - T(YAFFS_TRACE_ERROR, - (TSTR - ("yaffs: Could not add tnodes to management list" TENDSTR))); - return YAFFS_FAIL; + yaffs_trace(YAFFS_TRACE_ERROR, + "Could not add tnodes to management list"); + return YAFFS_FAIL; } else { - tnl->tnodes = newTnodes; - tnl->next = allocator->allocatedTnodeList; - allocator->allocatedTnodeList = tnl; + tnl->tnodes = new_tnodes; + tnl->next = allocator->alloc_tnode_list; + allocator->alloc_tnode_list = tnl; } - T(YAFFS_TRACE_ALLOCATE, (TSTR("yaffs: Tnodes added" TENDSTR))); + yaffs_trace(YAFFS_TRACE_ALLOCATE, "Tnodes added"); return YAFFS_OK; } - -yaffs_tnode_t *yaffs_alloc_raw_tnode(yaffs_dev_t *dev) +struct yaffs_tnode *yaffs_alloc_raw_tnode(struct yaffs_dev *dev) { - yaffs_Allocator *allocator = (yaffs_Allocator *)dev->allocator; - yaffs_tnode_t *tn = NULL; + struct yaffs_allocator *allocator = + (struct yaffs_allocator *)dev->allocator; + struct yaffs_tnode *tn = NULL; - if(!allocator){ - YBUG(); + if (!allocator) { + BUG(); return NULL; } /* If there are none left make more */ - if (!allocator->freeTnodes) + if (!allocator->free_tnodes) yaffs_create_tnodes(dev, YAFFS_ALLOCATION_NTNODES); - if (allocator->freeTnodes) { - tn = allocator->freeTnodes; - allocator->freeTnodes = allocator->freeTnodes->internal[0]; - allocator->nFreeTnodes--; + if (allocator->free_tnodes) { + tn = allocator->free_tnodes; + allocator->free_tnodes = allocator->free_tnodes->internal[0]; + allocator->n_free_tnodes--; } 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) +void yaffs_free_raw_tnode(struct yaffs_dev *dev, struct yaffs_tnode *tn) { - yaffs_Allocator *allocator = dev->allocator; + struct yaffs_allocator *allocator = dev->allocator; - if(!allocator){ - YBUG(); + if (!allocator) { + BUG(); return; } if (tn) { - tn->internal[0] = allocator->freeTnodes; - allocator->freeTnodes = tn; - allocator->nFreeTnodes++; + tn->internal[0] = allocator->free_tnodes; + allocator->free_tnodes = tn; + allocator->n_free_tnodes++; } - dev->checkpoint_blocks_required = 0; /* force recalculation*/ + dev->checkpoint_blocks_required = 0; /* force recalculation */ } +/*--------------- yaffs_obj alloaction ------------------------ + * + * Free yaffs_objs are stored in a list using obj->siblings. + * The blocks of allocated objects are stored in a linked list. + */ - -static void yaffs_init_raw_objs(yaffs_dev_t *dev) +static void yaffs_init_raw_objs(struct yaffs_dev *dev) { - yaffs_Allocator *allocator = dev->allocator; - - if(allocator) { - allocator->allocatedObjectList = NULL; - allocator->freeObjects = NULL; - allocator->nFreeObjects = 0; - } else - YBUG(); + struct yaffs_allocator *allocator = dev->allocator; + + if (!allocator) { + BUG(); + return; + } + + allocator->allocated_obj_list = NULL; + INIT_LIST_HEAD(&allocator->free_objs); + allocator->n_free_objects = 0; } -static void yaffs_deinit_raw_objs(yaffs_dev_t *dev) +static void yaffs_deinit_raw_objs(struct yaffs_dev *dev) { - yaffs_Allocator *allocator = dev->allocator; - yaffs_obj_tList *tmp; + struct yaffs_allocator *allocator = dev->allocator; + struct yaffs_obj_list *tmp; - if(!allocator){ - YBUG(); + if (!allocator) { + BUG(); return; } - while (allocator->allocatedObjectList) { - tmp = allocator->allocatedObjectList->next; - YFREE(allocator->allocatedObjectList->objects); - YFREE(allocator->allocatedObjectList); - - allocator->allocatedObjectList = tmp; + while (allocator->allocated_obj_list) { + tmp = allocator->allocated_obj_list->next; + kfree(allocator->allocated_obj_list->objects); + kfree(allocator->allocated_obj_list); + allocator->allocated_obj_list = tmp; } - allocator->freeObjects = NULL; - allocator->nFreeObjects = 0; - allocator->n_objCreated = 0; + INIT_LIST_HEAD(&allocator->free_objs); + allocator->n_free_objects = 0; + allocator->n_obj_created = 0; } - -static int yaffs_create_free_objs(yaffs_dev_t *dev, int n_obj) +static int yaffs_create_free_objs(struct yaffs_dev *dev, int n_obj) { - yaffs_Allocator *allocator = dev->allocator; - + struct yaffs_allocator *allocator = dev->allocator; int i; - yaffs_obj_t *newObjects; - yaffs_obj_tList *list; + struct yaffs_obj *new_objs; + struct yaffs_obj_list *list; - if(!allocator){ - YBUG(); + if (!allocator) { + BUG(); return YAFFS_FAIL; } @@ -301,109 +255,103 @@ static int yaffs_create_free_objs(yaffs_dev_t *dev, int n_obj) 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))); + new_objs = kmalloc(n_obj * sizeof(struct yaffs_obj), GFP_NOFS); + list = kmalloc(sizeof(struct yaffs_obj_list), GFP_NOFS); + + if (!new_objs || !list) { + kfree(new_objs); + new_objs = NULL; + kfree(list); + list = NULL; + yaffs_trace(YAFFS_TRACE_ALLOCATE, + "Could not allocate more objects"); 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]); - } + for (i = 0; i < n_obj; i++) + list_add(&new_objs[i].siblings, &allocator->free_objs); - newObjects[n_obj - 1].siblings.next = (void *)allocator->freeObjects; - allocator->freeObjects = newObjects; - allocator->nFreeObjects += n_obj; - allocator->n_objCreated += n_obj; + allocator->n_free_objects += n_obj; + allocator->n_obj_created += n_obj; /* Now add this bunch of Objects to a list for freeing up. */ - list->objects = newObjects; - list->next = allocator->allocatedObjectList; - allocator->allocatedObjectList = list; + list->objects = new_objs; + list->next = allocator->allocated_obj_list; + allocator->allocated_obj_list = list; return YAFFS_OK; } -yaffs_obj_t *yaffs_alloc_raw_obj(yaffs_dev_t *dev) +struct yaffs_obj *yaffs_alloc_raw_obj(struct yaffs_dev *dev) { - yaffs_obj_t *obj = NULL; - yaffs_Allocator *allocator = dev->allocator; + struct yaffs_obj *obj = NULL; + struct list_head *lh; + struct yaffs_allocator *allocator = dev->allocator; - if(!allocator) { - YBUG(); + if (!allocator) { + BUG(); return obj; } /* If there are none left make more */ - if (!allocator->freeObjects) + if (list_empty(&allocator->free_objs)) 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--; + if (!list_empty(&allocator->free_objs)) { + lh = allocator->free_objs.next; + obj = list_entry(lh, struct yaffs_obj, siblings); + list_del_init(lh); + allocator->n_free_objects--; } return obj; } - -void yaffs_free_raw_obj(yaffs_dev_t *dev, yaffs_obj_t *obj) +void yaffs_free_raw_obj(struct yaffs_dev *dev, struct yaffs_obj *obj) { - yaffs_Allocator *allocator = dev->allocator; + struct 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++; + if (!allocator) { + BUG(); + return; } + + /* Link into the free list. */ + list_add(&obj->siblings, &allocator->free_objs); + allocator->n_free_objects++; } -void yaffs_deinit_raw_tnodes_and_objs(yaffs_dev_t *dev) +void yaffs_deinit_raw_tnodes_and_objs(struct yaffs_dev *dev) { - if(dev->allocator){ - yaffs_deinit_raw_tnodes(dev); - yaffs_deinit_raw_objs(dev); - - YFREE(dev->allocator); - dev->allocator=NULL; - } else - YBUG(); + + if (!dev->allocator) { + BUG(); + return; + } + + yaffs_deinit_raw_tnodes(dev); + yaffs_deinit_raw_objs(dev); + kfree(dev->allocator); + dev->allocator = NULL; } -void yaffs_init_raw_tnodes_and_objs(yaffs_dev_t *dev) +void yaffs_init_raw_tnodes_and_objs(struct yaffs_dev *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(); -} + struct yaffs_allocator *allocator; + if (dev->allocator) { + BUG(); + return; + } + + allocator = kmalloc(sizeof(struct yaffs_allocator), GFP_NOFS); + if (allocator) { + dev->allocator = allocator; + yaffs_init_raw_tnodes(dev); + yaffs_init_raw_objs(dev); + } +} -#endif diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_allocator.h b/target/linux/generic/files/fs/yaffs2/yaffs_allocator.h index 777f3b01c4..a8cc322642 100644 --- a/target/linux/generic/files/fs/yaffs2/yaffs_allocator.h +++ b/target/linux/generic/files/fs/yaffs2/yaffs_allocator.h @@ -1,7 +1,7 @@ /* * YAFFS: Yet another Flash File System . A NAND-flash specific file system. * - * Copyright (C) 2002-2010 Aleph One Ltd. + * Copyright (C) 2002-2011 Aleph One Ltd. * for Toby Churchill Ltd and Brightstar Engineering * * Created by Charles Manning <charles@aleph1.co.uk> @@ -18,13 +18,13 @@ #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); +void yaffs_init_raw_tnodes_and_objs(struct yaffs_dev *dev); +void yaffs_deinit_raw_tnodes_and_objs(struct yaffs_dev *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); +struct yaffs_tnode *yaffs_alloc_raw_tnode(struct yaffs_dev *dev); +void yaffs_free_raw_tnode(struct yaffs_dev *dev, struct yaffs_tnode *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); +struct yaffs_obj *yaffs_alloc_raw_obj(struct yaffs_dev *dev); +void yaffs_free_raw_obj(struct yaffs_dev *dev, struct yaffs_obj *obj); #endif diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_attribs.c b/target/linux/generic/files/fs/yaffs2/yaffs_attribs.c new file mode 100644 index 0000000000..3d778f2266 --- /dev/null +++ b/target/linux/generic/files/fs/yaffs2/yaffs_attribs.c @@ -0,0 +1,124 @@ +/* + * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. + * + * Copyright (C) 2002-2011 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_attribs.h" + +void yaffs_load_attribs(struct yaffs_obj *obj, struct yaffs_obj_hdr *oh) +{ + obj->yst_uid = oh->yst_uid; + obj->yst_gid = oh->yst_gid; + obj->yst_atime = oh->yst_atime; + obj->yst_mtime = oh->yst_mtime; + obj->yst_ctime = oh->yst_ctime; + obj->yst_rdev = oh->yst_rdev; +} + +void yaffs_load_attribs_oh(struct yaffs_obj_hdr *oh, struct yaffs_obj *obj) +{ + oh->yst_uid = obj->yst_uid; + oh->yst_gid = obj->yst_gid; + oh->yst_atime = obj->yst_atime; + oh->yst_mtime = obj->yst_mtime; + oh->yst_ctime = obj->yst_ctime; + oh->yst_rdev = obj->yst_rdev; + +} + +void yaffs_load_current_time(struct yaffs_obj *obj, int do_a, int do_c) +{ + obj->yst_mtime = Y_CURRENT_TIME; + if (do_a) + obj->yst_atime = obj->yst_mtime; + if (do_c) + obj->yst_ctime = obj->yst_mtime; +} + +void yaffs_attribs_init(struct yaffs_obj *obj, u32 gid, u32 uid, u32 rdev) +{ + yaffs_load_current_time(obj, 1, 1); + obj->yst_rdev = rdev; + obj->yst_uid = uid; + obj->yst_gid = gid; +} + +static loff_t yaffs_get_file_size(struct yaffs_obj *obj) +{ + YCHAR *alias = NULL; + obj = yaffs_get_equivalent_obj(obj); + + 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 strnlen(alias, YAFFS_MAX_ALIAS_LENGTH); + default: + return 0; + } +} + +int yaffs_set_attribs(struct yaffs_obj *obj, struct iattr *attr) +{ + unsigned int valid = attr->ia_valid; + + if (valid & ATTR_MODE) + obj->yst_mode = attr->ia_mode; + if (valid & ATTR_UID) + obj->yst_uid = attr->ia_uid; + if (valid & ATTR_GID) + obj->yst_gid = attr->ia_gid; + + if (valid & ATTR_ATIME) + obj->yst_atime = Y_TIME_CONVERT(attr->ia_atime); + if (valid & ATTR_CTIME) + obj->yst_ctime = Y_TIME_CONVERT(attr->ia_ctime); + if (valid & ATTR_MTIME) + obj->yst_mtime = Y_TIME_CONVERT(attr->ia_mtime); + + if (valid & ATTR_SIZE) + yaffs_resize_file(obj, attr->ia_size); + + yaffs_update_oh(obj, NULL, 1, 0, 0, NULL); + + return YAFFS_OK; + +} + +int yaffs_get_attribs(struct yaffs_obj *obj, struct iattr *attr) +{ + unsigned int valid = 0; + + attr->ia_mode = obj->yst_mode; + valid |= ATTR_MODE; + attr->ia_uid = obj->yst_uid; + valid |= ATTR_UID; + attr->ia_gid = obj->yst_gid; + valid |= ATTR_GID; + + Y_TIME_CONVERT(attr->ia_atime) = obj->yst_atime; + valid |= ATTR_ATIME; + Y_TIME_CONVERT(attr->ia_ctime) = obj->yst_ctime; + valid |= ATTR_CTIME; + Y_TIME_CONVERT(attr->ia_mtime) = obj->yst_mtime; + valid |= ATTR_MTIME; + + attr->ia_size = yaffs_get_file_size(obj); + valid |= ATTR_SIZE; + + attr->ia_valid = valid; + + return YAFFS_OK; +} diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_attribs.h b/target/linux/generic/files/fs/yaffs2/yaffs_attribs.h new file mode 100644 index 0000000000..5b21b085b7 --- /dev/null +++ b/target/linux/generic/files/fs/yaffs2/yaffs_attribs.h @@ -0,0 +1,28 @@ +/* + * YAFFS: Yet another Flash File System . A NAND-flash specific file system. + * + * Copyright (C) 2002-2011 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_ATTRIBS_H__ +#define __YAFFS_ATTRIBS_H__ + +#include "yaffs_guts.h" + +void yaffs_load_attribs(struct yaffs_obj *obj, struct yaffs_obj_hdr *oh); +void yaffs_load_attribs_oh(struct yaffs_obj_hdr *oh, struct yaffs_obj *obj); +void yaffs_attribs_init(struct yaffs_obj *obj, u32 gid, u32 uid, u32 rdev); +void yaffs_load_current_time(struct yaffs_obj *obj, int do_a, int do_c); +int yaffs_set_attribs(struct yaffs_obj *obj, struct iattr *attr); +int yaffs_get_attribs(struct yaffs_obj *obj, struct iattr *attr); + +#endif diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_bitmap.c b/target/linux/generic/files/fs/yaffs2/yaffs_bitmap.c index 1769e9b47e..4440e930d6 100644 --- a/target/linux/generic/files/fs/yaffs2/yaffs_bitmap.c +++ b/target/linux/generic/files/fs/yaffs2/yaffs_bitmap.c @@ -1,7 +1,7 @@ /* * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. * - * Copyright (C) 2002-2010 Aleph One Ltd. + * Copyright (C) 2002-2011 Aleph One Ltd. * for Toby Churchill Ltd and Brightstar Engineering * * Created by Charles Manning <charles@aleph1.co.uk> @@ -17,89 +17,81 @@ * Chunk bitmap manipulations */ -static Y_INLINE __u8 *yaffs_BlockBits(yaffs_dev_t *dev, int blk) +static inline u8 *yaffs_block_bits(struct yaffs_dev *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(); + yaffs_trace(YAFFS_TRACE_ERROR, + "BlockBits block %d is not valid", + blk); + BUG(); } return dev->chunk_bits + - (dev->chunk_bit_stride * (blk - dev->internal_start_block)); + (dev->chunk_bit_stride * (blk - dev->internal_start_block)); } -void yaffs_verify_chunk_bit_id(yaffs_dev_t *dev, int blk, int chunk) +void yaffs_verify_chunk_bit_id(struct yaffs_dev *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(); + chunk < 0 || chunk >= dev->param.chunks_per_block) { + yaffs_trace(YAFFS_TRACE_ERROR, + "Chunk Id (%d:%d) invalid", + blk, chunk); + BUG(); } } -void yaffs_clear_chunk_bits(yaffs_dev_t *dev, int blk) +void yaffs_clear_chunk_bits(struct yaffs_dev *dev, int blk) { - __u8 *blkBits = yaffs_BlockBits(dev, blk); + u8 *blk_bits = yaffs_block_bits(dev, blk); - memset(blkBits, 0, dev->chunk_bit_stride); + memset(blk_bits, 0, dev->chunk_bit_stride); } -void yaffs_clear_chunk_bit(yaffs_dev_t *dev, int blk, int chunk) +void yaffs_clear_chunk_bit(struct yaffs_dev *dev, int blk, int chunk) { - __u8 *blkBits = yaffs_BlockBits(dev, blk); + u8 *blk_bits = yaffs_block_bits(dev, blk); yaffs_verify_chunk_bit_id(dev, blk, chunk); - - blkBits[chunk / 8] &= ~(1 << (chunk & 7)); + blk_bits[chunk / 8] &= ~(1 << (chunk & 7)); } -void yaffs_set_chunk_bit(yaffs_dev_t *dev, int blk, int chunk) +void yaffs_set_chunk_bit(struct yaffs_dev *dev, int blk, int chunk) { - __u8 *blkBits = yaffs_BlockBits(dev, blk); + u8 *blk_bits = yaffs_block_bits(dev, blk); yaffs_verify_chunk_bit_id(dev, blk, chunk); - - blkBits[chunk / 8] |= (1 << (chunk & 7)); + blk_bits[chunk / 8] |= (1 << (chunk & 7)); } -int yaffs_check_chunk_bit(yaffs_dev_t *dev, int blk, int chunk) +int yaffs_check_chunk_bit(struct yaffs_dev *dev, int blk, int chunk) { - __u8 *blkBits = yaffs_BlockBits(dev, blk); - yaffs_verify_chunk_bit_id(dev, blk, chunk); + u8 *blk_bits = yaffs_block_bits(dev, blk); - return (blkBits[chunk / 8] & (1 << (chunk & 7))) ? 1 : 0; + yaffs_verify_chunk_bit_id(dev, blk, chunk); + return (blk_bits[chunk / 8] & (1 << (chunk & 7))) ? 1 : 0; } -int yaffs_still_some_chunks(yaffs_dev_t *dev, int blk) +int yaffs_still_some_chunks(struct yaffs_dev *dev, int blk) { - __u8 *blkBits = yaffs_BlockBits(dev, blk); + u8 *blk_bits = yaffs_block_bits(dev, blk); int i; + for (i = 0; i < dev->chunk_bit_stride; i++) { - if (*blkBits) + if (*blk_bits) return 1; - blkBits++; + blk_bits++; } return 0; } -int yaffs_count_chunk_bits(yaffs_dev_t *dev, int blk) +int yaffs_count_chunk_bits(struct yaffs_dev *dev, int blk) { - __u8 *blkBits = yaffs_BlockBits(dev, blk); + u8 *blk_bits = yaffs_block_bits(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++; - } + + for (i = 0; i < dev->chunk_bit_stride; i++, blk_bits++) + n += hweight8(*blk_bits); + return n; } - diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_bitmap.h b/target/linux/generic/files/fs/yaffs2/yaffs_bitmap.h index c11ca2fa68..e26b37d89a 100644 --- a/target/linux/generic/files/fs/yaffs2/yaffs_bitmap.h +++ b/target/linux/generic/files/fs/yaffs2/yaffs_bitmap.h @@ -1,14 +1,16 @@ /* - * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. + * YAFFS: Yet another Flash File System . A NAND-flash specific file system. * - * Copyright (C) 2002-2010 Aleph One Ltd. + * Copyright (C) 2002-2011 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 + * 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. */ /* @@ -20,12 +22,12 @@ #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); +void yaffs_verify_chunk_bit_id(struct yaffs_dev *dev, int blk, int chunk); +void yaffs_clear_chunk_bits(struct yaffs_dev *dev, int blk); +void yaffs_clear_chunk_bit(struct yaffs_dev *dev, int blk, int chunk); +void yaffs_set_chunk_bit(struct yaffs_dev *dev, int blk, int chunk); +int yaffs_check_chunk_bit(struct yaffs_dev *dev, int blk, int chunk); +int yaffs_still_some_chunks(struct yaffs_dev *dev, int blk); +int yaffs_count_chunk_bits(struct yaffs_dev *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 d46f5634ac..e739fb4a10 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) 2002-2010 Aleph One Ltd. + * Copyright (C) 2002-2011 Aleph One Ltd. * for Toby Churchill Ltd and Brightstar Engineering * * Created by Charles Manning <charles@aleph1.co.uk> @@ -14,40 +14,91 @@ #include "yaffs_checkptrw.h" #include "yaffs_getblockinfo.h" -static int yaffs2_checkpt_space_ok(yaffs_dev_t *dev) +struct yaffs_checkpt_chunk_hdr { + int version; + int seq; + u32 sum; + u32 xor; +} ; + + +static int apply_chunk_offset(struct yaffs_dev *dev, int chunk) +{ + return chunk - dev->chunk_offset; +} + +static int apply_block_offset(struct yaffs_dev *dev, int block) +{ + return block - dev->block_offset; +} + +static void yaffs2_checkpt_init_chunk_hdr(struct yaffs_dev *dev) +{ + struct yaffs_checkpt_chunk_hdr hdr; + + hdr.version = YAFFS_CHECKPOINT_VERSION; + hdr.seq = dev->checkpt_page_seq; + hdr.sum = dev->checkpt_sum; + hdr.xor = dev->checkpt_xor; + + dev->checkpt_byte_offs = sizeof(hdr); + + memcpy(dev->checkpt_buffer, &hdr, sizeof(hdr)); +} + +static int yaffs2_checkpt_check_chunk_hdr(struct yaffs_dev *dev) { - int blocksAvailable = dev->n_erased_blocks - dev->param.n_reserved_blocks; + struct yaffs_checkpt_chunk_hdr hdr; + + memcpy(&hdr, dev->checkpt_buffer, sizeof(hdr)); - T(YAFFS_TRACE_CHECKPOINT, - (TSTR("checkpt blocks available = %d" TENDSTR), - blocksAvailable)); + dev->checkpt_byte_offs = sizeof(hdr); - return (blocksAvailable <= 0) ? 0 : 1; + return hdr.version == YAFFS_CHECKPOINT_VERSION && + hdr.seq == dev->checkpt_page_seq && + hdr.sum == dev->checkpt_sum && + hdr.xor == dev->checkpt_xor; } +static int yaffs2_checkpt_space_ok(struct yaffs_dev *dev) +{ + int blocks_avail = dev->n_erased_blocks - dev->param.n_reserved_blocks; + + yaffs_trace(YAFFS_TRACE_CHECKPOINT, + "checkpt blocks_avail = %d", blocks_avail); -static int yaffs_checkpt_erase(yaffs_dev_t *dev) + return (blocks_avail <= 0) ? 0 : 1; +} + +static int yaffs_checkpt_erase(struct yaffs_dev *dev) { int i; - if (!dev->param.erase_fn) + if (!dev->drv.drv_erase_fn) return 0; - T(YAFFS_TRACE_CHECKPOINT, (TSTR("checking blocks %d to %d"TENDSTR), - dev->internal_start_block, dev->internal_end_block)); + yaffs_trace(YAFFS_TRACE_CHECKPOINT, + "checking blocks %d to %d", + dev->internal_start_block, dev->internal_end_block); for (i = dev->internal_start_block; i <= dev->internal_end_block; i++) { - yaffs_block_info_t *bi = yaffs_get_block_info(dev, i); + struct yaffs_block_info *bi = yaffs_get_block_info(dev, i); + int offset_i = apply_block_offset(dev, i); + int result; + if (bi->block_state == YAFFS_BLOCK_STATE_CHECKPOINT) { - T(YAFFS_TRACE_CHECKPOINT, (TSTR("erasing checkpt block %d"TENDSTR), i)); + yaffs_trace(YAFFS_TRACE_CHECKPOINT, + "erasing checkpt block %d", i); dev->n_erasures++; - if (dev->param.erase_fn(dev, i - dev->block_offset /* realign */)) { + result = dev->drv.drv_erase_fn(dev, offset_i); + if(result) { bi->block_state = YAFFS_BLOCK_STATE_EMPTY; dev->n_erased_blocks++; - dev->n_free_chunks += dev->param.chunks_per_block; + dev->n_free_chunks += + dev->param.chunks_per_block; } else { - dev->param.bad_block_fn(dev, i); + dev->drv.drv_mark_bad_fn(dev, offset_i); bi->block_state = YAFFS_BLOCK_STATE_DEAD; } } @@ -58,93 +109,112 @@ static int yaffs_checkpt_erase(yaffs_dev_t *dev) return 1; } - -static void yaffs2_checkpt_find_erased_block(yaffs_dev_t *dev) +static void yaffs2_checkpt_find_erased_block(struct yaffs_dev *dev) { - int i; - 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->n_erased_blocks, dev->param.n_reserved_blocks, blocksAvailable, dev->checkpt_next_block)); + int i; + int blocks_avail = dev->n_erased_blocks - dev->param.n_reserved_blocks; + + yaffs_trace(YAFFS_TRACE_CHECKPOINT, + "allocating checkpt block: erased %d reserved %d avail %d next %d ", + dev->n_erased_blocks, dev->param.n_reserved_blocks, + blocks_avail, dev->checkpt_next_block); if (dev->checkpt_next_block >= 0 && - dev->checkpt_next_block <= dev->internal_end_block && - blocksAvailable > 0) { + dev->checkpt_next_block <= dev->internal_end_block && + blocks_avail > 0) { - for (i = dev->checkpt_next_block; i <= dev->internal_end_block; i++) { - yaffs_block_info_t *bi = yaffs_get_block_info(dev, i); + for (i = dev->checkpt_next_block; i <= dev->internal_end_block; + i++) { + struct yaffs_block_info *bi; + + 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)); + yaffs_trace(YAFFS_TRACE_CHECKPOINT, + "allocating checkpt block %d", i); return; } } } - T(YAFFS_TRACE_CHECKPOINT, (TSTR("out of checkpt blocks"TENDSTR))); + yaffs_trace(YAFFS_TRACE_CHECKPOINT, "out of checkpt blocks"); dev->checkpt_next_block = -1; dev->checkpt_cur_block = -1; } -static void yaffs2_checkpt_find_block(yaffs_dev_t *dev) +static void yaffs2_checkpt_find_block(struct yaffs_dev *dev) { - int i; - yaffs_ext_tags tags; + int i; + struct yaffs_ext_tags tags; - T(YAFFS_TRACE_CHECKPOINT, (TSTR("find next checkpt block: start: blocks %d next %d" TENDSTR), - dev->blocks_in_checkpt, dev->checkpt_next_block)); + yaffs_trace(YAFFS_TRACE_CHECKPOINT, + "find next checkpt block: start: blocks %d next %d", + dev->blocks_in_checkpt, dev->checkpt_next_block); if (dev->blocks_in_checkpt < dev->checkpt_max_blocks) - for (i = dev->checkpt_next_block; i <= dev->internal_end_block; i++) { + 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; + enum yaffs_block_state state; + u32 seq; - dev->param.read_chunk_tags_fn(dev, realignedChunk, + dev->tagger.read_chunk_tags_fn(dev, + apply_chunk_offset(dev, chunk), NULL, &tags); - T(YAFFS_TRACE_CHECKPOINT, (TSTR("find next checkpt block: search: block %d oid %d seq %d eccr %d" TENDSTR), - i, tags.obj_id, tags.seq_number, tags.ecc_result)); - - if (tags.seq_number == YAFFS_SEQUENCE_CHECKPOINT_DATA) { - /* Right kind of block */ - 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; - } + yaffs_trace(YAFFS_TRACE_CHECKPOINT, + "find next checkpt block: search: block %d state %d oid %d seq %d eccr %d", + i, (int) state, + tags.obj_id, tags.seq_number, + tags.ecc_result); + + if (tags.seq_number != YAFFS_SEQUENCE_CHECKPOINT_DATA) + continue; + + dev->tagger.query_block_fn(dev, + apply_block_offset(dev, i), + &state, &seq); + if (state == YAFFS_BLOCK_STATE_DEAD) + continue; + + /* Right kind of block */ + 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++; + yaffs_trace(YAFFS_TRACE_CHECKPOINT, + "found checkpt block %d", i); + return; } - T(YAFFS_TRACE_CHECKPOINT, (TSTR("found no more checkpt blocks"TENDSTR))); + yaffs_trace(YAFFS_TRACE_CHECKPOINT, "found no more checkpt blocks"); dev->checkpt_next_block = -1; dev->checkpt_cur_block = -1; } - -int yaffs2_checkpt_open(yaffs_dev_t *dev, int forWriting) +int yaffs2_checkpt_open(struct yaffs_dev *dev, int writing) { + int i; - - dev->checkpt_open_write = forWriting; + dev->checkpt_open_write = writing; /* Got the functions we need? */ - if (!dev->param.write_chunk_tags_fn || - !dev->param.read_chunk_tags_fn || - !dev->param.erase_fn || - !dev->param.bad_block_fn) + if (!dev->tagger.write_chunk_tags_fn || + !dev->tagger.read_chunk_tags_fn || + !dev->drv.drv_erase_fn || + !dev->drv.drv_mark_bad_fn) return 0; - if (forWriting && !yaffs2_checkpt_space_ok(dev)) + if (writing && !yaffs2_checkpt_space_ok(dev)) return 0; if (!dev->checkpt_buffer) - dev->checkpt_buffer = YMALLOC_DMA(dev->param.total_bytes_per_chunk); + dev->checkpt_buffer = + kmalloc(dev->param.total_bytes_per_chunk, GFP_NOFS); if (!dev->checkpt_buffer) return 0; - dev->checkpt_page_seq = 0; dev->checkpt_byte_count = 0; dev->checkpt_sum = 0; @@ -153,44 +223,46 @@ int yaffs2_checkpt_open(yaffs_dev_t *dev, int forWriting) dev->checkpt_cur_chunk = -1; dev->checkpt_next_block = dev->internal_start_block; - /* Erase all the blocks in the checkpoint area */ - if (forWriting) { + if (writing) { memset(dev->checkpt_buffer, 0, dev->data_bytes_per_chunk); - dev->checkpt_byte_offs = 0; + yaffs2_checkpt_init_chunk_hdr(dev); return yaffs_checkpt_erase(dev); - } else { - int i; - /* Set to a value that will kick off a read */ - 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->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; } + /* Opening for a read */ + /* Set to a value that will kick off a read */ + 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->blocks_in_checkpt = 0; + dev->checkpt_max_blocks = + (dev->internal_end_block - dev->internal_start_block) / 16 + 2; + dev->checkpt_block_list = + kmalloc(sizeof(int) * dev->checkpt_max_blocks, GFP_NOFS); + + 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 yaffs2_get_checkpt_sum(yaffs_dev_t *dev, __u32 *sum) +int yaffs2_get_checkpt_sum(struct yaffs_dev *dev, u32 * sum) { - __u32 compositeSum; - compositeSum = (dev->checkpt_sum << 8) | (dev->checkpt_xor & 0xFF); - *sum = compositeSum; + u32 composite_sum; + + composite_sum = (dev->checkpt_sum << 8) | (dev->checkpt_xor & 0xff); + *sum = composite_sum; return 1; } -static int yaffs2_checkpt_flush_buffer(yaffs_dev_t *dev) +static int yaffs2_checkpt_flush_buffer(struct yaffs_dev *dev) { int chunk; - int realignedChunk; - - yaffs_ext_tags tags; + int offset_chunk; + struct yaffs_ext_tags tags; if (dev->checkpt_cur_block < 0) { yaffs2_checkpt_find_erased_block(dev); @@ -201,31 +273,34 @@ static int yaffs2_checkpt_flush_buffer(yaffs_dev_t *dev) return 0; tags.is_deleted = 0; - tags.obj_id = dev->checkpt_next_block; /* Hint to next place to look */ + 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.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_block_info_t *bi = yaffs_get_block_info(dev, dev->checkpt_cur_block); + struct yaffs_block_info *bi = + yaffs_get_block_info(dev, dev->checkpt_cur_block); bi->block_state = YAFFS_BLOCK_STATE_CHECKPOINT; dev->blocks_in_checkpt++; } - chunk = dev->checkpt_cur_block * dev->param.chunks_per_block + dev->checkpt_cur_chunk; - + 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->checkpt_cur_block, dev->checkpt_cur_chunk, tags.obj_id, tags.chunk_id)); + yaffs_trace(YAFFS_TRACE_CHECKPOINT, + "checkpoint wite buffer nand %d(%d:%d) objid %d chId %d", + chunk, dev->checkpt_cur_block, dev->checkpt_cur_chunk, + tags.obj_id, tags.chunk_id); - realignedChunk = chunk - dev->chunk_offset; + offset_chunk = apply_chunk_offset(dev, chunk); dev->n_page_writes++; - dev->param.write_chunk_tags_fn(dev, realignedChunk, - dev->checkpt_buffer, &tags); - dev->checkpt_byte_offs = 0; + dev->tagger.write_chunk_tags_fn(dev, offset_chunk, + dev->checkpt_buffer, &tags); dev->checkpt_page_seq++; dev->checkpt_cur_chunk++; if (dev->checkpt_cur_chunk >= dev->param.chunks_per_block) { @@ -234,19 +309,17 @@ static int yaffs2_checkpt_flush_buffer(yaffs_dev_t *dev) } memset(dev->checkpt_buffer, 0, dev->data_bytes_per_chunk); + yaffs2_checkpt_init_chunk_hdr(dev); + + return 1; } - -int yaffs2_checkpt_wr(yaffs_dev_t *dev, const void *data, int n_bytes) +int yaffs2_checkpt_wr(struct yaffs_dev *dev, const void *data, int n_bytes) { int i = 0; int ok = 1; - - - __u8 * dataBytes = (__u8 *)data; - - + u8 *data_bytes = (u8 *) data; if (!dev->checkpt_buffer) return 0; @@ -255,35 +328,31 @@ int yaffs2_checkpt_wr(yaffs_dev_t *dev, const void *data, int n_bytes) return -1; while (i < n_bytes && ok) { - dev->checkpt_buffer[dev->checkpt_byte_offs] = *dataBytes; - dev->checkpt_sum += *dataBytes; - dev->checkpt_xor ^= *dataBytes; + dev->checkpt_buffer[dev->checkpt_byte_offs] = *data_bytes; + dev->checkpt_sum += *data_bytes; + dev->checkpt_xor ^= *data_bytes; dev->checkpt_byte_offs++; i++; - dataBytes++; + data_bytes++; dev->checkpt_byte_count++; - if (dev->checkpt_byte_offs < 0 || - dev->checkpt_byte_offs >= dev->data_bytes_per_chunk) + dev->checkpt_byte_offs >= dev->data_bytes_per_chunk) ok = yaffs2_checkpt_flush_buffer(dev); } return i; } -int yaffs2_checkpt_rd(yaffs_dev_t *dev, void *data, int n_bytes) +int yaffs2_checkpt_rd(struct yaffs_dev *dev, void *data, int n_bytes) { int i = 0; int ok = 1; - yaffs_ext_tags tags; - - + struct yaffs_ext_tags tags; int chunk; - int realignedChunk; - - __u8 *dataBytes = (__u8 *)data; + int offset_chunk; + u8 *data_bytes = (u8 *) data; if (!dev->checkpt_buffer) return 0; @@ -293,109 +362,113 @@ int yaffs2_checkpt_rd(yaffs_dev_t *dev, void *data, int n_bytes) while (i < n_bytes && ok) { - if (dev->checkpt_byte_offs < 0 || - dev->checkpt_byte_offs >= dev->data_bytes_per_chunk) { + dev->checkpt_byte_offs >= dev->data_bytes_per_chunk) { if (dev->checkpt_cur_block < 0) { yaffs2_checkpt_find_block(dev); dev->checkpt_cur_chunk = 0; } - if (dev->checkpt_cur_block < 0) + if (dev->checkpt_cur_block < 0) { ok = 0; - else { - 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->param.read_chunk_tags_fn(dev, - realignedChunk, + break; + } + + chunk = dev->checkpt_cur_block * + dev->param.chunks_per_block + + dev->checkpt_cur_chunk; + + offset_chunk = apply_chunk_offset(dev, chunk); + dev->n_page_reads++; + + /* read in the next chunk */ + dev->tagger.read_chunk_tags_fn(dev, + offset_chunk, dev->checkpt_buffer, &tags); - 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; + 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; + break; + } + if(!yaffs2_checkpt_check_chunk_hdr(dev)) { + ok = 0; + break; + } - dev->checkpt_byte_offs = 0; - dev->checkpt_page_seq++; - dev->checkpt_cur_chunk++; + dev->checkpt_page_seq++; + dev->checkpt_cur_chunk++; - if (dev->checkpt_cur_chunk >= dev->param.chunks_per_block) - dev->checkpt_cur_block = -1; - } - } + if (dev->checkpt_cur_chunk >= + dev->param.chunks_per_block) + dev->checkpt_cur_block = -1; - if (ok) { - *dataBytes = dev->checkpt_buffer[dev->checkpt_byte_offs]; - dev->checkpt_sum += *dataBytes; - dev->checkpt_xor ^= *dataBytes; - dev->checkpt_byte_offs++; - i++; - dataBytes++; - dev->checkpt_byte_count++; } + + *data_bytes = dev->checkpt_buffer[dev->checkpt_byte_offs]; + dev->checkpt_sum += *data_bytes; + dev->checkpt_xor ^= *data_bytes; + dev->checkpt_byte_offs++; + i++; + data_bytes++; + dev->checkpt_byte_count++; } - return i; + return i; } -int yaffs_checkpt_close(yaffs_dev_t *dev) +int yaffs_checkpt_close(struct yaffs_dev *dev) { + int i; if (dev->checkpt_open_write) { - if (dev->checkpt_byte_offs != 0) + if (dev->checkpt_byte_offs != + sizeof(sizeof(struct yaffs_checkpt_chunk_hdr))) yaffs2_checkpt_flush_buffer(dev); - } else if(dev->checkpt_block_list){ - int i; - for (i = 0; i < dev->blocks_in_checkpt && dev->checkpt_block_list[i] >= 0; i++) { + } else if (dev->checkpt_block_list) { + 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) + struct yaffs_block_info *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->checkpt_block_list); + kfree(dev->checkpt_block_list); dev->checkpt_block_list = NULL; } - dev->n_free_chunks -= dev->blocks_in_checkpt * dev->param.chunks_per_block; + 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->checkpt_byte_count)); + yaffs_trace(YAFFS_TRACE_CHECKPOINT, "checkpoint byte count %d", + dev->checkpt_byte_count); if (dev->checkpt_buffer) { /* free the buffer */ - YFREE(dev->checkpt_buffer); + kfree(dev->checkpt_buffer); dev->checkpt_buffer = NULL; return 1; - } else + } else { return 0; + } } -int yaffs2_checkpt_invalidate_stream(yaffs_dev_t *dev) +int yaffs2_checkpt_invalidate_stream(struct yaffs_dev *dev) { /* Erase the checkpoint data */ - T(YAFFS_TRACE_CHECKPOINT, (TSTR("checkpoint invalidate of %d blocks"TENDSTR), - dev->blocks_in_checkpt)); + yaffs_trace(YAFFS_TRACE_CHECKPOINT, + "checkpoint invalidate of %d blocks", + dev->blocks_in_checkpt); 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 059ba9e098..cdbaba7153 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) 2002-2010 Aleph One Ltd. + * Copyright (C) 2002-2011 Aleph One Ltd. * for Toby Churchill Ltd and Brightstar Engineering * * Created by Charles Manning <charles@aleph1.co.uk> @@ -18,17 +18,16 @@ #include "yaffs_guts.h" -int yaffs2_checkpt_open(yaffs_dev_t *dev, int forWriting); +int yaffs2_checkpt_open(struct yaffs_dev *dev, int writing); -int yaffs2_checkpt_wr(yaffs_dev_t *dev, const void *data, int n_bytes); +int yaffs2_checkpt_wr(struct yaffs_dev *dev, const void *data, int n_bytes); -int yaffs2_checkpt_rd(yaffs_dev_t *dev, void *data, int n_bytes); +int yaffs2_checkpt_rd(struct yaffs_dev *dev, void *data, int n_bytes); -int yaffs2_get_checkpt_sum(yaffs_dev_t *dev, __u32 *sum); +int yaffs2_get_checkpt_sum(struct yaffs_dev *dev, u32 * sum); -int yaffs_checkpt_close(yaffs_dev_t *dev); - -int yaffs2_checkpt_invalidate_stream(yaffs_dev_t *dev); +int yaffs_checkpt_close(struct yaffs_dev *dev); +int yaffs2_checkpt_invalidate_stream(struct yaffs_dev *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 4030908d51..9294107c15 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) 2002-2010 Aleph One Ltd. + * Copyright (C) 2002-2011 Aleph One Ltd. * for Toby Churchill Ltd and Brightstar Engineering * * Created by Charles Manning <charles@aleph1.co.uk> @@ -16,22 +16,22 @@ * * The ECC comprises 22 bits of parity information and is stuffed into 3 bytes. * The two unused bit are set to 1. - * The ECC can correct single bit errors in a 256-byte page of data. Thus, two such ECC - * blocks are used on a 512-byte NAND page. + * The ECC can correct single bit errors in a 256-byte page of data. Thus, two + * such ECC blocks are used on a 512-byte NAND page. * */ +#include "yportenv.h" + +#include "yaffs_ecc.h" + /* Table generated by gen-ecc.c * Using a table means we do not have to calculate p1..p4 and p1'..p4' * for each byte of data. These are instead provided in a table in bits7..2. - * Bit 0 of each entry indicates whether the entry has an odd or even parity, and therefore - * this bytes influence on the line parity. + * Bit 0 of each entry indicates whether the entry has an odd or even parity, + * and therefore this bytes influence on the line parity. */ -#include "yportenv.h" - -#include "yaffs_ecc.h" - static const unsigned char column_parity_table[] = { 0x00, 0x55, 0x59, 0x0c, 0x65, 0x30, 0x3c, 0x69, 0x69, 0x3c, 0x30, 0x65, 0x0c, 0x59, 0x55, 0x00, @@ -67,35 +67,11 @@ static const unsigned char column_parity_table[] = { 0x69, 0x3c, 0x30, 0x65, 0x0c, 0x59, 0x55, 0x00, }; -/* Count the bits in an unsigned char or a U32 */ - -static int yaffs_count_bits(unsigned char x) -{ - int r = 0; - while (x) { - if (x & 1) - r++; - x >>= 1; - } - return r; -} - -static int yaffs_count_bits32(unsigned x) -{ - int r = 0; - while (x) { - if (x & 1) - r++; - x >>= 1; - } - return r; -} /* Calculate the ECC for a 256-byte block of data */ -void yaffs_ecc_cacl(const unsigned char *data, unsigned char *ecc) +void yaffs_ecc_calc(const unsigned char *data, unsigned char *ecc) { unsigned int i; - unsigned char col_parity = 0; unsigned char line_parity = 0; unsigned char line_parity_prime = 0; @@ -106,7 +82,7 @@ void yaffs_ecc_cacl(const unsigned char *data, unsigned char *ecc) b = column_parity_table[*data++]; col_parity ^= b; - if (b & 0x01) { /* odd number of bits in the byte */ + if (b & 0x01) { /* odd number of bits in the byte */ line_parity ^= i; line_parity_prime ^= ~i; } @@ -152,19 +128,12 @@ void yaffs_ecc_cacl(const unsigned char *data, unsigned char *ecc) t |= 0x01; ecc[0] = ~t; -#ifdef CONFIG_YAFFS_ECC_WRONG_ORDER - /* Swap the bytes into the wrong order */ - t = ecc[0]; - ecc[0] = ecc[1]; - ecc[1] = t; -#endif } - /* Correct the ECC on a 256 byte block of data */ int yaffs_ecc_correct(unsigned char *data, unsigned char *read_ecc, - const unsigned char *test_ecc) + const unsigned char *test_ecc) { unsigned char d0, d1, d2; /* deltas */ @@ -173,7 +142,7 @@ int yaffs_ecc_correct(unsigned char *data, unsigned char *read_ecc, d2 = read_ecc[2] ^ test_ecc[2]; if ((d0 | d1 | d2) == 0) - return 0; /* no error */ + return 0; /* no error */ if (((d0 ^ (d0 >> 1)) & 0x55) == 0x55 && ((d1 ^ (d1 >> 1)) & 0x55) == 0x55 && @@ -183,15 +152,6 @@ int yaffs_ecc_correct(unsigned char *data, unsigned char *read_ecc, unsigned byte; unsigned bit; -#ifdef CONFIG_YAFFS_ECC_WRONG_ORDER - /* swap the bytes to correct for the wrong order */ - unsigned char t; - - t = d0; - d0 = d1; - d1 = t; -#endif - bit = byte = 0; if (d1 & 0x80) @@ -220,19 +180,17 @@ int yaffs_ecc_correct(unsigned char *data, unsigned char *read_ecc, data[byte] ^= (1 << bit); - return 1; /* Corrected the error */ + return 1; /* Corrected the error */ } - if ((yaffs_count_bits(d0) + - yaffs_count_bits(d1) + - yaffs_count_bits(d2)) == 1) { + if ((hweight8(d0) + hweight8(d1) + hweight8(d2)) == 1) { /* Reccoverable error in ecc */ read_ecc[0] = test_ecc[0]; read_ecc[1] = test_ecc[1]; read_ecc[2] = test_ecc[2]; - return 1; /* Corrected the error */ + return 1; /* Corrected the error */ } /* Unrecoverable error */ @@ -241,15 +199,13 @@ int yaffs_ecc_correct(unsigned char *data, unsigned char *read_ecc, } - /* * ECCxxxOther does ECC calcs on arbitrary n bytes of data */ void yaffs_ecc_calc_other(const unsigned char *data, unsigned n_bytes, - yaffs_ECCOther *eccOther) + struct yaffs_ecc_other *ecc_other) { unsigned int i; - unsigned char col_parity = 0; unsigned line_parity = 0; unsigned line_parity_prime = 0; @@ -259,7 +215,7 @@ void yaffs_ecc_calc_other(const unsigned char *data, unsigned n_bytes, b = column_parity_table[*data++]; col_parity ^= b; - if (b & 0x01) { + if (b & 0x01) { /* odd number of bits in the byte */ line_parity ^= i; line_parity_prime ^= ~i; @@ -267,54 +223,56 @@ void yaffs_ecc_calc_other(const unsigned char *data, unsigned n_bytes, } - eccOther->colParity = (col_parity >> 2) & 0x3f; - eccOther->lineParity = line_parity; - eccOther->lineParityPrime = line_parity_prime; + ecc_other->col_parity = (col_parity >> 2) & 0x3f; + ecc_other->line_parity = line_parity; + ecc_other->line_parity_prime = line_parity_prime; } int yaffs_ecc_correct_other(unsigned char *data, unsigned n_bytes, - yaffs_ECCOther *read_ecc, - const yaffs_ECCOther *test_ecc) + struct yaffs_ecc_other *read_ecc, + const struct yaffs_ecc_other *test_ecc) { - unsigned char cDelta; /* column parity delta */ - unsigned lDelta; /* line parity delta */ - unsigned lDeltaPrime; /* line parity delta */ + unsigned char delta_col; /* column parity delta */ + unsigned delta_line; /* line parity delta */ + unsigned delta_line_prime; /* line parity delta */ unsigned bit; - cDelta = read_ecc->colParity ^ test_ecc->colParity; - lDelta = read_ecc->lineParity ^ test_ecc->lineParity; - lDeltaPrime = read_ecc->lineParityPrime ^ test_ecc->lineParityPrime; + delta_col = read_ecc->col_parity ^ test_ecc->col_parity; + delta_line = read_ecc->line_parity ^ test_ecc->line_parity; + delta_line_prime = + read_ecc->line_parity_prime ^ test_ecc->line_parity_prime; - if ((cDelta | lDelta | lDeltaPrime) == 0) - return 0; /* no error */ + if ((delta_col | delta_line | delta_line_prime) == 0) + return 0; /* no error */ - if (lDelta == ~lDeltaPrime && - (((cDelta ^ (cDelta >> 1)) & 0x15) == 0x15)) { + if (delta_line == ~delta_line_prime && + (((delta_col ^ (delta_col >> 1)) & 0x15) == 0x15)) { /* Single bit (recoverable) error in data */ bit = 0; - if (cDelta & 0x20) + if (delta_col & 0x20) bit |= 0x04; - if (cDelta & 0x08) + if (delta_col & 0x08) bit |= 0x02; - if (cDelta & 0x02) + if (delta_col & 0x02) bit |= 0x01; - if (lDelta >= n_bytes) + if (delta_line >= n_bytes) return -1; - data[lDelta] ^= (1 << bit); + data[delta_line] ^= (1 << bit); - return 1; /* corrected */ + return 1; /* corrected */ } - if ((yaffs_count_bits32(lDelta) + yaffs_count_bits32(lDeltaPrime) + - yaffs_count_bits(cDelta)) == 1) { + if ((hweight32(delta_line) + + hweight32(delta_line_prime) + + hweight8(delta_col)) == 1) { /* Reccoverable error in ecc */ *read_ecc = *test_ecc; - return 1; /* corrected */ + return 1; /* corrected */ } /* Unrecoverable error */ diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_ecc.h b/target/linux/generic/files/fs/yaffs2/yaffs_ecc.h index 124e5a0d40..17d47bd80f 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) 2002-2010 Aleph One Ltd. + * Copyright (C) 2002-2011 Aleph One Ltd. * for Toby Churchill Ltd and Brightstar Engineering * * Created by Charles Manning <charles@aleph1.co.uk> @@ -18,27 +18,27 @@ * * The ECC comprises 22 bits of parity information and is stuffed into 3 bytes. * The two unused bit are set to 1. - * The ECC can correct single bit errors in a 256-byte page of data. Thus, two such ECC - * blocks are used on a 512-byte NAND page. + * The ECC can correct single bit errors in a 256-byte page of data. + * Thus, two such ECC blocks are used on a 512-byte NAND page. * */ #ifndef __YAFFS_ECC_H__ #define __YAFFS_ECC_H__ -typedef struct { - unsigned char colParity; - unsigned lineParity; - unsigned lineParityPrime; -} yaffs_ECCOther; +struct yaffs_ecc_other { + unsigned char col_parity; + unsigned line_parity; + unsigned line_parity_prime; +}; -void yaffs_ecc_cacl(const unsigned char *data, unsigned char *ecc); +void yaffs_ecc_calc(const unsigned char *data, unsigned char *ecc); int yaffs_ecc_correct(unsigned char *data, unsigned char *read_ecc, - const unsigned char *test_ecc); + const unsigned char *test_ecc); void yaffs_ecc_calc_other(const unsigned char *data, unsigned n_bytes, - yaffs_ECCOther *ecc); + struct yaffs_ecc_other *ecc); int yaffs_ecc_correct_other(unsigned char *data, unsigned n_bytes, - yaffs_ECCOther *read_ecc, - const yaffs_ECCOther *test_ecc); + struct yaffs_ecc_other *read_ecc, + const struct yaffs_ecc_other *test_ecc); #endif diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_getblockinfo.h b/target/linux/generic/files/fs/yaffs2/yaffs_getblockinfo.h index 432441bb89..8fd0802bdd 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) 2002-2010 Aleph One Ltd. + * Copyright (C) 2002-2011 Aleph One Ltd. * for Toby Churchill Ltd and Brightstar Engineering * * Created by Charles Manning <charles@aleph1.co.uk> @@ -20,14 +20,14 @@ #include "yaffs_trace.h" /* Function to manipulate block info */ -static Y_INLINE yaffs_block_info_t *yaffs_get_block_info(yaffs_dev_t * dev, int blk) +static inline struct yaffs_block_info *yaffs_get_block_info(struct yaffs_dev + *dev, int blk) { 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(); + yaffs_trace(YAFFS_TRACE_ERROR, + "**>> yaffs: get_block_info block %d is not valid", + blk); + BUG(); } return &dev->block_info[blk - dev->internal_start_block]; } diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_guts.c b/target/linux/generic/files/fs/yaffs2/yaffs_guts.c index 36e11f53c8..1fd464d68a 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) 2002-2010 Aleph One Ltd. + * Copyright (C) 2002-2011 Aleph One Ltd. * for Toby Churchill Ltd and Brightstar Engineering * * Created by Charles Manning <charles@aleph1.co.uk> @@ -10,28 +10,25 @@ * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. */ + #include "yportenv.h" #include "yaffs_trace.h" -#include "yaffsinterface.h" #include "yaffs_guts.h" -#include "yaffs_tagsvalidity.h" #include "yaffs_getblockinfo.h" - #include "yaffs_tagscompat.h" - +#include "yaffs_tagsmarshall.h" #include "yaffs_nand.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" +#include "yaffs_attribs.h" +#include "yaffs_summary.h" /* Note YAFFS_GC_GOOD_ENOUGH must be <= YAFFS_GC_PASSIVE_THRESHOLD */ #define YAFFS_GC_GOOD_ENOUGH 2 @@ -39,94 +36,40 @@ #include "yaffs_ecc.h" +/* Forward declarations */ +static int yaffs_wr_data_obj(struct yaffs_obj *in, int inode_chunk, + const u8 *buffer, int n_bytes, int use_reserve); -/* Robustification (if it ever comes about...) */ -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_handle_chunk_wr_ok(yaffs_dev_t *dev, int nand_chunk, - const __u8 *data, - 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 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_write_new_chunk(yaffs_dev_t *dev, - const __u8 *buffer, - yaffs_ext_tags *tags, - int useReserve); - - -static yaffs_obj_t *yaffs_new_obj(yaffs_dev_t *dev, int number, - yaffs_obj_type type); - - -static int yaffs_apply_xattrib_mod(yaffs_obj_t *obj, char *buffer, yaffs_xattr_mod *xmod); - -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_unlink_worker(yaffs_obj_t *obj); - -static int yaffs_tags_match(const yaffs_ext_tags *tags, int obj_id, - int chunkInObject); - -static int yaffs_alloc_chunk(yaffs_dev_t *dev, int useReserve, - yaffs_block_info_t **blockUsedPtr); - -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 int yaffs_find_chunk_in_file(yaffs_obj_t *in, int inode_chunk, - yaffs_ext_tags *tags); - -static int yaffs_verify_chunk_written(yaffs_dev_t *dev, - int nand_chunk, - const __u8 *data, - yaffs_ext_tags *tags); - - -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); - +static void yaffs_fix_null_name(struct yaffs_obj *obj, YCHAR *name, + int buffer_size); /* Function to calculate chunk and offset */ -static void yaffs_addr_to_chunk(yaffs_dev_t *dev, loff_t addr, int *chunkOut, - __u32 *offsetOut) +void yaffs_addr_to_chunk(struct yaffs_dev *dev, loff_t addr, + int *chunk_out, u32 *offset_out) { int chunk; - __u32 offset; + u32 offset; - chunk = (__u32)(addr >> dev->chunk_shift); + chunk = (u32) (addr >> dev->chunk_shift); if (dev->chunk_div == 1) { /* easy power of 2 case */ - offset = (__u32)(addr & dev->chunk_mask); + offset = (u32) (addr & dev->chunk_mask); } else { /* Non power-of-2 case */ - loff_t chunkBase; + loff_t chunk_base; chunk /= dev->chunk_div; - chunkBase = ((loff_t)chunk) * dev->data_bytes_per_chunk; - offset = (__u32)(addr - chunkBase); + chunk_base = ((loff_t) chunk) * dev->data_bytes_per_chunk; + offset = (u32) (addr - chunk_base); } - *chunkOut = chunk; - *offsetOut = offset; + *chunk_out = chunk; + *offset_out = offset; } /* Function to return the number of shifts for a power of 2 greater than or @@ -135,110 +78,93 @@ static void yaffs_addr_to_chunk(yaffs_dev_t *dev, loff_t addr, int *chunkOut, * be hellishly efficient. */ -static __u32 ShiftsGE(__u32 x) +static inline u32 calc_shifts_ceiling(u32 x) { - int extraBits; - int nShifts; + int extra_bits; + int shifts; - nShifts = extraBits = 0; + shifts = extra_bits = 0; while (x > 1) { if (x & 1) - extraBits++; + extra_bits++; x >>= 1; - nShifts++; + shifts++; } - if (extraBits) - nShifts++; + if (extra_bits) + shifts++; - return nShifts; + return shifts; } /* Function to return the number of shifts to get a 1 in bit 0 */ -static __u32 Shifts(__u32 x) +static inline u32 calc_shifts(u32 x) { - __u32 nShifts; + u32 shifts; - nShifts = 0; + shifts = 0; if (!x) return 0; - while (!(x&1)) { + while (!(x & 1)) { x >>= 1; - nShifts++; + shifts++; } - return nShifts; + return shifts; } - - /* * Temporary buffer manipulations. */ -static int yaffs_init_tmp_buffers(yaffs_dev_t *dev) +static int yaffs_init_tmp_buffers(struct yaffs_dev *dev) { int i; - __u8 *buf = (__u8 *)1; + u8 *buf = (u8 *) 1; memset(dev->temp_buffer, 0, sizeof(dev->temp_buffer)); for (i = 0; buf && i < YAFFS_N_TEMP_BUFFERS; i++) { - dev->temp_buffer[i].line = 0; /* not in use */ - dev->temp_buffer[i].buffer = buf = - YMALLOC_DMA(dev->param.total_bytes_per_chunk); + dev->temp_buffer[i].in_use = 0; + buf = kmalloc(dev->param.total_bytes_per_chunk, GFP_NOFS); + dev->temp_buffer[i].buffer = buf; } return buf ? YAFFS_OK : YAFFS_FAIL; } -__u8 *yaffs_get_temp_buffer(yaffs_dev_t *dev, int line_no) +u8 *yaffs_get_temp_buffer(struct yaffs_dev * dev) { - int i, j; + int i; 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->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->temp_buffer[j].max_line = - dev->temp_buffer[j].line; - } - + if (dev->temp_buffer[i].in_use == 0) { + dev->temp_buffer[i].in_use = 1; return dev->temp_buffer[i].buffer; } } - T(YAFFS_TRACE_BUFFERS, - (TSTR("Out of temp buffers at line %d, other held by lines:"), - line_no)); - for (i = 0; i < YAFFS_N_TEMP_BUFFERS; i++) - T(YAFFS_TRACE_BUFFERS, (TSTR(" %d "), dev->temp_buffer[i].line)); - - T(YAFFS_TRACE_BUFFERS, (TSTR(" " TENDSTR))); - + yaffs_trace(YAFFS_TRACE_BUFFERS, "Out of temp buffers"); /* * If we got here then we have to allocate an unmanaged one * This is not good. */ dev->unmanaged_buffer_allocs++; - return YMALLOC(dev->data_bytes_per_chunk); + return kmalloc(dev->data_bytes_per_chunk, GFP_NOFS); } -void yaffs_release_temp_buffer(yaffs_dev_t *dev, __u8 *buffer, - int line_no) +void yaffs_release_temp_buffer(struct yaffs_dev *dev, u8 *buffer) { int i; @@ -246,61 +172,94 @@ void yaffs_release_temp_buffer(yaffs_dev_t *dev, __u8 *buffer, for (i = 0; i < YAFFS_N_TEMP_BUFFERS; i++) { if (dev->temp_buffer[i].buffer == buffer) { - dev->temp_buffer[i].line = 0; + dev->temp_buffer[i].in_use = 0; return; } } if (buffer) { /* assume it is an unmanaged one. */ - T(YAFFS_TRACE_BUFFERS, - (TSTR("Releasing unmanaged temp buffer in line %d" TENDSTR), - line_no)); - YFREE(buffer); + yaffs_trace(YAFFS_TRACE_BUFFERS, + "Releasing unmanaged temp buffer"); + kfree(buffer); dev->unmanaged_buffer_deallocs++; } } /* - * Determine if we have a managed buffer. + * Functions for robustisizing TODO + * */ -int yaffs_is_managed_tmp_buffer(yaffs_dev_t *dev, const __u8 *buffer) + +static void yaffs_handle_chunk_wr_ok(struct yaffs_dev *dev, int nand_chunk, + const u8 *data, + const struct yaffs_ext_tags *tags) { - int i; + (void) dev; + (void) nand_chunk; + (void) data; + (void) tags; +} - for (i = 0; i < YAFFS_N_TEMP_BUFFERS; i++) { - if (dev->temp_buffer[i].buffer == buffer) - return 1; - } +static void yaffs_handle_chunk_update(struct yaffs_dev *dev, int nand_chunk, + const struct yaffs_ext_tags *tags) +{ + (void) dev; + (void) nand_chunk; + (void) tags; +} - for (i = 0; i < dev->param.n_caches; i++) { - if (dev->cache[i].data == buffer) - return 1; +void yaffs_handle_chunk_error(struct yaffs_dev *dev, + struct yaffs_block_info *bi) +{ + if (!bi->gc_prioritise) { + bi->gc_prioritise = 1; + dev->has_pending_prioritised_gc = 1; + bi->chunk_error_strikes++; + + if (bi->chunk_error_strikes > 3) { + bi->needs_retiring = 1; /* Too many stikes, so retire */ + yaffs_trace(YAFFS_TRACE_ALWAYS, + "yaffs: Block struck out"); + + } } +} - if (buffer == dev->checkpt_buffer) - return 1; +static void yaffs_handle_chunk_wr_error(struct yaffs_dev *dev, int nand_chunk, + int erased_ok) +{ + int flash_block = nand_chunk / dev->param.chunks_per_block; + struct yaffs_block_info *bi = yaffs_get_block_info(dev, flash_block); - T(YAFFS_TRACE_ALWAYS, - (TSTR("yaffs: unmaged buffer detected.\n" TENDSTR))); - return 0; + yaffs_handle_chunk_error(dev, bi); + + if (erased_ok) { + /* Was an actual write failure, + * so mark the block for retirement.*/ + bi->needs_retiring = 1; + yaffs_trace(YAFFS_TRACE_ERROR | YAFFS_TRACE_BAD_BLOCKS, + "**>> Block %d needs retiring", flash_block); + } + + /* Delete the chunk */ + yaffs_chunk_del(dev, nand_chunk, 1, __LINE__); + yaffs_skip_rest_of_block(dev); } /* * Verification code */ - - - /* * Simple hash function. Needs to have a reasonable spread */ -static Y_INLINE int yaffs_hash_fn(int n) +static inline int yaffs_hash_fn(int n) { - n = abs(n); + if (n < 0) + n = -n; return n % YAFFS_NOBJECT_BUCKETS; } @@ -309,38 +268,36 @@ static Y_INLINE int yaffs_hash_fn(int n) * Note that root might have a presence in NAND if permissions are set. */ -yaffs_obj_t *yaffs_root(yaffs_dev_t *dev) +struct yaffs_obj *yaffs_root(struct yaffs_dev *dev) { return dev->root_dir; } -yaffs_obj_t *yaffs_lost_n_found(yaffs_dev_t *dev) +struct yaffs_obj *yaffs_lost_n_found(struct yaffs_dev *dev) { return dev->lost_n_found; } - /* * Erased NAND checking functions */ -int yaffs_check_ff(__u8 *buffer, int n_bytes) +int yaffs_check_ff(u8 *buffer, int n_bytes) { /* Horrible, slow implementation */ while (n_bytes--) { - if (*buffer != 0xFF) + if (*buffer != 0xff) return 0; buffer++; } return 1; } -static int yaffs_check_chunk_erased(struct yaffs_dev_s *dev, - int nand_chunk) +static int yaffs_check_chunk_erased(struct yaffs_dev *dev, int nand_chunk) { int retval = YAFFS_OK; - __u8 *data = yaffs_get_temp_buffer(dev, __LINE__); - yaffs_ext_tags tags; + u8 *data = yaffs_get_temp_buffer(dev); + struct yaffs_ext_tags tags; int result; result = yaffs_rd_chunk_tags_nand(dev, nand_chunk, data, &tags); @@ -348,57 +305,199 @@ static int yaffs_check_chunk_erased(struct yaffs_dev_s *dev, if (tags.ecc_result > YAFFS_ECC_RESULT_NO_ERROR) retval = YAFFS_FAIL; - 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)); + if (!yaffs_check_ff(data, dev->data_bytes_per_chunk) || + tags.chunk_used) { + yaffs_trace(YAFFS_TRACE_NANDACCESS, + "Chunk %d not erased", nand_chunk); retval = YAFFS_FAIL; } - yaffs_release_temp_buffer(dev, data, __LINE__); + yaffs_release_temp_buffer(dev, data); return retval; } - -static int yaffs_verify_chunk_written(yaffs_dev_t *dev, - int nand_chunk, - const __u8 *data, - yaffs_ext_tags *tags) +static int yaffs_verify_chunk_written(struct yaffs_dev *dev, + int nand_chunk, + const u8 *data, + struct yaffs_ext_tags *tags) { int retval = YAFFS_OK; - yaffs_ext_tags tempTags; - __u8 *buffer = yaffs_get_temp_buffer(dev,__LINE__); + struct yaffs_ext_tags temp_tags; + u8 *buffer = yaffs_get_temp_buffer(dev); 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) + + result = yaffs_rd_chunk_tags_nand(dev, nand_chunk, buffer, &temp_tags); + if (memcmp(buffer, data, dev->data_bytes_per_chunk) || + temp_tags.obj_id != tags->obj_id || + temp_tags.chunk_id != tags->chunk_id || + temp_tags.n_bytes != tags->n_bytes) retval = YAFFS_FAIL; - yaffs_release_temp_buffer(dev, buffer, __LINE__); + yaffs_release_temp_buffer(dev, buffer); return retval; } -static int yaffs_write_new_chunk(struct yaffs_dev_s *dev, - const __u8 *data, - yaffs_ext_tags *tags, - int useReserve) + +int yaffs_check_alloc_available(struct yaffs_dev *dev, int n_chunks) +{ + int reserved_chunks; + int reserved_blocks = dev->param.n_reserved_blocks; + int checkpt_blocks; + + checkpt_blocks = yaffs_calc_checkpt_blocks_required(dev); + + reserved_chunks = + (reserved_blocks + checkpt_blocks) * dev->param.chunks_per_block; + + return (dev->n_free_chunks > (reserved_chunks + n_chunks)); +} + +static int yaffs_find_alloc_block(struct yaffs_dev *dev) +{ + int i; + struct yaffs_block_info *bi; + + if (dev->n_erased_blocks < 1) { + /* Hoosterman we've got a problem. + * Can't get space to gc + */ + yaffs_trace(YAFFS_TRACE_ERROR, + "yaffs tragedy: no more erased blocks"); + + return -1; + } + + /* Find an empty block. */ + + 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_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--; + yaffs_trace(YAFFS_TRACE_ALLOCATE, + "Allocated block %d, seq %d, %d left" , + dev->alloc_block_finder, dev->seq_number, + dev->n_erased_blocks); + return dev->alloc_block_finder; + } + } + + yaffs_trace(YAFFS_TRACE_ALWAYS, + "yaffs tragedy: no more erased blocks, but there should have been %d", + dev->n_erased_blocks); + + return -1; +} + +static int yaffs_alloc_chunk(struct yaffs_dev *dev, int use_reserver, + struct yaffs_block_info **block_ptr) +{ + int ret_val; + struct yaffs_block_info *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 (!use_reserver && !yaffs_check_alloc_available(dev, 1)) { + /* No space unless we're allowed to use the reserve. */ + return -1; + } + + if (dev->n_erased_blocks < dev->param.n_reserved_blocks + && dev->alloc_page == 0) + yaffs_trace(YAFFS_TRACE_ALLOCATE, "Allocating reserve"); + + /* Next page please.... */ + if (dev->alloc_block >= 0) { + bi = yaffs_get_block_info(dev, dev->alloc_block); + + ret_val = (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->alloc_page++; + + dev->n_free_chunks--; + + /* 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; + } + + if (block_ptr) + *block_ptr = bi; + + return ret_val; + } + + yaffs_trace(YAFFS_TRACE_ERROR, + "!!!!!!!!! Allocator out !!!!!!!!!!!!!!!!!"); + + return -1; +} + +static int yaffs_get_erased_chunks(struct yaffs_dev *dev) +{ + int n; + + n = dev->n_erased_blocks * dev->param.chunks_per_block; + + if (dev->alloc_block > 0) + n += (dev->param.chunks_per_block - dev->alloc_page); + + return n; + +} + +/* + * 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(struct yaffs_dev *dev) +{ + struct yaffs_block_info *bi; + + if (dev->alloc_block > 0) { + 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_write_new_chunk(struct yaffs_dev *dev, + const u8 *data, + struct yaffs_ext_tags *tags, int use_reserver) { int attempts = 0; - int writeOk = 0; + int write_ok = 0; int chunk; yaffs2_checkpt_invalidate(dev); do { - yaffs_block_info_t *bi = 0; - int erasedOk = 0; + struct yaffs_block_info *bi = 0; + int erased_ok = 0; - chunk = yaffs_alloc_chunk(dev, useReserve, &bi); + chunk = yaffs_alloc_chunk(dev, use_reserver, &bi); if (chunk < 0) { /* no space */ break; @@ -410,7 +509,7 @@ static int yaffs_write_new_chunk(struct yaffs_dev_s *dev, * * 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... + * 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, @@ -424,42 +523,42 @@ static int yaffs_write_new_chunk(struct yaffs_dev_s *dev, * 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 + * If an erase check fails or the write fails we skip the * rest of the block. */ /* let's give it a try */ attempts++; - if(dev->param.always_check_erased) + 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)); + erased_ok = yaffs_check_chunk_erased(dev, chunk); + if (erased_ok != YAFFS_OK) { + yaffs_trace(YAFFS_TRACE_ERROR, + "**>> yaffs chunk %d was not erased", + 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); + yaffs_chunk_del(dev, chunk, 1, __LINE__); + yaffs_skip_rest_of_block(dev); continue; } } - writeOk = yaffs_wr_chunk_tags_nand(dev, chunk, - data, tags); + write_ok = yaffs_wr_chunk_tags_nand(dev, chunk, data, tags); - if(!bi->skip_erased_check) - writeOk = yaffs_verify_chunk_written(dev, chunk, data, tags); + if (!bi->skip_erased_check) + write_ok = + yaffs_verify_chunk_written(dev, chunk, data, tags); - if (writeOk != YAFFS_OK) { + if (write_ok != YAFFS_OK) { /* Clean up aborted write, skip to next block and * try another chunk */ - yaffs_handle_chunk_wr_error(dev, chunk, erasedOk); + yaffs_handle_chunk_wr_error(dev, chunk, erased_ok); continue; } @@ -468,58 +567,58 @@ static int yaffs_write_new_chunk(struct yaffs_dev_s *dev, /* Copy the data into the robustification buffer */ yaffs_handle_chunk_wr_ok(dev, chunk, data, tags); - } while (writeOk != YAFFS_OK && - (yaffs_wr_attempts <= 0 || attempts <= yaffs_wr_attempts)); + } while (write_ok != YAFFS_OK && + (yaffs_wr_attempts <= 0 || attempts <= yaffs_wr_attempts)); - if (!writeOk) + if (!write_ok) chunk = -1; if (attempts > 1) { - T(YAFFS_TRACE_ERROR, - (TSTR("**>> yaffs write required %d attempts" TENDSTR), - attempts)); - - dev->n_retired_writes += (attempts - 1); + yaffs_trace(YAFFS_TRACE_ERROR, + "**>> yaffs write required %d attempts", + attempts); + dev->n_retried_writes += (attempts - 1); } return chunk; } - - /* * Block retiring for handling a broken block. */ -static void yaffs_retire_block(yaffs_dev_t *dev, int flash_block) +static void yaffs_retire_block(struct yaffs_dev *dev, int flash_block) { - yaffs_block_info_t *bi = yaffs_get_block_info(dev, flash_block); + struct yaffs_block_info *bi = yaffs_get_block_info(dev, flash_block); yaffs2_checkpt_invalidate(dev); - - yaffs2_clear_oldest_dirty_seq(dev,bi); + + yaffs2_clear_oldest_dirty_seq(dev, bi); 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)); + yaffs_trace(YAFFS_TRACE_ALWAYS, + "yaffs: Failed to mark bad and erase block %d", + flash_block); } else { - yaffs_ext_tags tags; - int chunk_id = flash_block * dev->param.chunks_per_block; + struct yaffs_ext_tags tags; + int chunk_id = + flash_block * dev->param.chunks_per_block; - __u8 *buffer = yaffs_get_temp_buffer(dev, __LINE__); + u8 *buffer = yaffs_get_temp_buffer(dev); memset(buffer, 0xff, dev->data_bytes_per_chunk); - yaffs_init_tags(&tags); + memset(&tags, 0, sizeof(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)); - - yaffs_release_temp_buffer(dev, buffer, __LINE__); + if (dev->tagger.write_chunk_tags_fn(dev, chunk_id - + dev->chunk_offset, + buffer, + &tags) != YAFFS_OK) + yaffs_trace(YAFFS_TRACE_ALWAYS, + "yaffs: Failed to write bad block marker to block %d", + flash_block); + + yaffs_release_temp_buffer(dev, buffer); } } @@ -530,110 +629,64 @@ static void yaffs_retire_block(yaffs_dev_t *dev, int flash_block) dev->n_retired_blocks++; } -/* - * Functions for robustisizing TODO - * - */ - -static void yaffs_handle_chunk_wr_ok(yaffs_dev_t *dev, int nand_chunk, - const __u8 *data, - const yaffs_ext_tags *tags) -{ - dev=dev; - nand_chunk=nand_chunk; - data=data; - tags=tags; -} +/*---------------- Name handling functions ------------*/ -static void yaffs_handle_chunk_update(yaffs_dev_t *dev, int nand_chunk, - const yaffs_ext_tags *tags) +static u16 yaffs_calc_name_sum(const YCHAR *name) { - dev=dev; - nand_chunk=nand_chunk; - tags=tags; -} + u16 sum = 0; + u16 i = 1; -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++; + if (!name) + return 0; - 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))); + while ((*name) && i < (YAFFS_MAX_NAME_LENGTH / 2)) { - } + /* 0x1f mask is case insensitive */ + sum += ((*name) & 0x1f) * i; + i++; + name++; } + return sum; } -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); - yaffs_handle_chunk_error(dev, bi); +void yaffs_set_obj_name(struct yaffs_obj *obj, const YCHAR * name) +{ + memset(obj->short_name, 0, sizeof(obj->short_name)); - 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)); + if (name && !name[0]) { + yaffs_fix_null_name(obj, obj->short_name, + YAFFS_SHORT_NAME_LENGTH); + name = obj->short_name; + } else if (name && + strnlen(name, YAFFS_SHORT_NAME_LENGTH + 1) <= + YAFFS_SHORT_NAME_LENGTH) { + strcpy(obj->short_name, name); } - /* Delete the chunk */ - yaffs_chunk_del(dev, nand_chunk, 1, __LINE__); - yaffs_skip_rest_of_block(dev); + obj->sum = yaffs_calc_name_sum(name); } - -/*---------------- Name handling functions ------------*/ - -static __u16 yaffs_calc_name_sum(const YCHAR *name) +void yaffs_set_obj_name_from_oh(struct yaffs_obj *obj, + const struct yaffs_obj_hdr *oh) { - __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; +#ifdef CONFIG_YAFFS_AUTO_UNICODE + YCHAR tmp_name[YAFFS_MAX_NAME_LENGTH + 1]; + memset(tmp_name, 0, sizeof(tmp_name)); + yaffs_load_name_from_oh(obj->my_dev, tmp_name, oh->name, + YAFFS_MAX_NAME_LENGTH + 1); + yaffs_set_obj_name(obj, tmp_name); #else - sum += (*bname) * i; + yaffs_set_obj_name(obj, oh->name); #endif - i++; - bname++; - } - } - return sum; } -void yaffs_set_obj_name(yaffs_obj_t *obj, const YCHAR *name) +loff_t yaffs_max_file_size(struct yaffs_dev *dev) { -#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); + if(sizeof(loff_t) < 8) + return YAFFS_MAX_FILE_SIZE_32; else - 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 + return ((loff_t) YAFFS_MAX_CHUNK_ID) * dev->data_bytes_per_chunk; } /*-------------------- TNODES ------------------- @@ -643,87 +696,87 @@ void yaffs_set_obj_name_from_oh(yaffs_obj_t *obj, const yaffs_obj_header *oh) * in the tnode. */ - -yaffs_tnode_t *yaffs_get_tnode(yaffs_dev_t *dev) +struct yaffs_tnode *yaffs_get_tnode(struct yaffs_dev *dev) { - yaffs_tnode_t *tn = yaffs_alloc_raw_tnode(dev); - if (tn){ + struct yaffs_tnode *tn = yaffs_alloc_raw_tnode(dev); + + if (tn) { memset(tn, 0, dev->tnode_size); dev->n_tnodes++; } - dev->checkpoint_blocks_required = 0; /* force recalculation*/ + 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_free_tnode(yaffs_dev_t *dev, yaffs_tnode_t *tn) +static void yaffs_free_tnode(struct yaffs_dev *dev, struct yaffs_tnode *tn) { - yaffs_free_raw_tnode(dev,tn); + yaffs_free_raw_tnode(dev, tn); dev->n_tnodes--; - dev->checkpoint_blocks_required = 0; /* force recalculation*/ + dev->checkpoint_blocks_required = 0; /* force recalculation */ } -static void yaffs_deinit_tnodes_and_objs(yaffs_dev_t *dev) +static void yaffs_deinit_tnodes_and_objs(struct yaffs_dev *dev) { yaffs_deinit_raw_tnodes_and_objs(dev); dev->n_obj = 0; dev->n_tnodes = 0; } - -void yaffs_load_tnode_0(yaffs_dev_t *dev, yaffs_tnode_t *tn, unsigned pos, - unsigned val) +static void yaffs_load_tnode_0(struct yaffs_dev *dev, struct yaffs_tnode *tn, + unsigned pos, unsigned val) { - __u32 *map = (__u32 *)tn; - __u32 bitInMap; - __u32 bitInWord; - __u32 wordInMap; - __u32 mask; + u32 *map = (u32 *) tn; + u32 bit_in_map; + u32 bit_in_word; + u32 word_in_map; + u32 mask; pos &= YAFFS_TNODES_LEVEL0_MASK; val >>= dev->chunk_grp_bits; - bitInMap = pos * dev->tnode_width; - wordInMap = bitInMap / 32; - bitInWord = bitInMap & (32 - 1); + bit_in_map = pos * dev->tnode_width; + word_in_map = bit_in_map / 32; + bit_in_word = bit_in_map & (32 - 1); - mask = dev->tnode_mask << bitInWord; + mask = dev->tnode_mask << bit_in_word; - map[wordInMap] &= ~mask; - map[wordInMap] |= (mask & (val << bitInWord)); + map[word_in_map] &= ~mask; + map[word_in_map] |= (mask & (val << bit_in_word)); - 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)); + if (dev->tnode_width > (32 - bit_in_word)) { + bit_in_word = (32 - bit_in_word); + word_in_map++; + mask = + dev->tnode_mask >> bit_in_word; + map[word_in_map] &= ~mask; + map[word_in_map] |= (mask & (val >> bit_in_word)); } } -__u32 yaffs_get_group_base(yaffs_dev_t *dev, yaffs_tnode_t *tn, - unsigned pos) +u32 yaffs_get_group_base(struct yaffs_dev *dev, struct yaffs_tnode *tn, + unsigned pos) { - __u32 *map = (__u32 *)tn; - __u32 bitInMap; - __u32 bitInWord; - __u32 wordInMap; - __u32 val; + u32 *map = (u32 *) tn; + u32 bit_in_map; + u32 bit_in_word; + u32 word_in_map; + u32 val; pos &= YAFFS_TNODES_LEVEL0_MASK; - bitInMap = pos * dev->tnode_width; - wordInMap = bitInMap / 32; - bitInWord = bitInMap & (32 - 1); + bit_in_map = pos * dev->tnode_width; + word_in_map = bit_in_map / 32; + bit_in_word = bit_in_map & (32 - 1); - val = map[wordInMap] >> bitInWord; + val = map[word_in_map] >> bit_in_word; - if (dev->tnode_width > (32 - bitInWord)) { - bitInWord = (32 - bitInWord); - wordInMap++;; - val |= (map[wordInMap] << bitInWord); + if (dev->tnode_width > (32 - bit_in_word)) { + bit_in_word = (32 - bit_in_word); + word_in_map++; + val |= (map[word_in_map] << bit_in_word); } val &= dev->tnode_mask; @@ -740,16 +793,16 @@ __u32 yaffs_get_group_base(yaffs_dev_t *dev, yaffs_tnode_t *tn, */ /* 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) +struct yaffs_tnode *yaffs_find_tnode_0(struct yaffs_dev *dev, + struct yaffs_file_var *file_struct, + u32 chunk_id) { - yaffs_tnode_t *tn = file_struct->top; - __u32 i; - int requiredTallness; + struct yaffs_tnode *tn = file_struct->top; + u32 i; + int required_depth; int level = file_struct->top_level; - dev=dev; + (void) dev; /* Check sane level and chunk Id */ if (level < 0 || level > YAFFS_TNODES_MAX_LEVEL) @@ -761,54 +814,54 @@ yaffs_tnode_t *yaffs_find_tnode_0(yaffs_dev_t *dev, /* First check we're tall enough (ie enough top_level) */ i = chunk_id >> YAFFS_TNODES_LEVEL0_BITS; - requiredTallness = 0; + required_depth = 0; while (i) { i >>= YAFFS_TNODES_INTERNAL_BITS; - requiredTallness++; + required_depth++; } - if (requiredTallness > file_struct->top_level) - return NULL; /* Not tall enough, so we can't find it */ + if (required_depth > 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]; + (YAFFS_TNODES_LEVEL0_BITS + + (level - 1) * + YAFFS_TNODES_INTERNAL_BITS)) & + YAFFS_TNODES_INTERNAL_MASK]; level--; } return tn; } -/* AddOrFindLevel0Tnode finds the level 0 tnode if it exists, otherwise first expands the tree. +/* add_find_tnode_0 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 the tn argument is NULL, then a fresh tnode will be added otherwise the + * specified tn will be plugged into the ttree. */ -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) +struct yaffs_tnode *yaffs_add_find_tnode_0(struct yaffs_dev *dev, + struct yaffs_file_var *file_struct, + u32 chunk_id, + struct yaffs_tnode *passed_tn) { - int requiredTallness; + int required_depth; int i; int l; - yaffs_tnode_t *tn; - - __u32 x; - + struct yaffs_tnode *tn; + u32 x; /* Check sane level and page Id */ - if (file_struct->top_level < 0 || file_struct->top_level > YAFFS_TNODES_MAX_LEVEL) + if (file_struct->top_level < 0 || + file_struct->top_level > YAFFS_TNODES_MAX_LEVEL) return NULL; if (chunk_id > YAFFS_MAX_CHUNK_ID) @@ -817,16 +870,15 @@ yaffs_tnode_t *yaffs_add_find_tnode_0(yaffs_dev_t *dev, /* First check we're tall enough (ie enough top_level) */ x = chunk_id >> YAFFS_TNODES_LEVEL0_BITS; - requiredTallness = 0; + required_depth = 0; while (x) { x >>= YAFFS_TNODES_INTERNAL_BITS; - requiredTallness++; + required_depth++; } - - if (requiredTallness > file_struct->top_level) { + if (required_depth > file_struct->top_level) { /* Not tall enough, gotta make the tree taller */ - for (i = file_struct->top_level; i < requiredTallness; i++) { + for (i = file_struct->top_level; i < required_depth; i++) { tn = yaffs_get_tnode(dev); @@ -835,8 +887,8 @@ yaffs_tnode_t *yaffs_add_find_tnode_0(yaffs_dev_t *dev, file_struct->top = tn; file_struct->top_level++; } else { - T(YAFFS_TRACE_ERROR, - (TSTR("yaffs: no more tnodes" TENDSTR))); + yaffs_trace(YAFFS_TRACE_ERROR, + "yaffs: no more tnodes"); return NULL; } } @@ -854,24 +906,24 @@ yaffs_tnode_t *yaffs_add_find_tnode_0(yaffs_dev_t *dev, (l - 1) * YAFFS_TNODES_INTERNAL_BITS)) & YAFFS_TNODES_INTERNAL_MASK; - if ((l > 1) && !tn->internal[x]) { /* Add missing non-level-zero tnode */ tn->internal[x] = yaffs_get_tnode(dev); - if(!tn->internal[x]) + 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 we already have one, release it */ if (tn->internal[x]) - yaffs_free_tnode(dev, 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]) + if (!tn->internal[x]) return NULL; } } @@ -882,7 +934,8 @@ yaffs_tnode_t *yaffs_add_find_tnode_0(yaffs_dev_t *dev, } else { /* top is level 0 */ if (passed_tn) { - memcpy(tn, passed_tn, (dev->tnode_width * YAFFS_NTNODES_LEVEL0)/8); + memcpy(tn, passed_tn, + (dev->tnode_width * YAFFS_NTNODES_LEVEL0) / 8); yaffs_free_tnode(dev, passed_tn); } } @@ -890,425 +943,685 @@ yaffs_tnode_t *yaffs_add_find_tnode_0(yaffs_dev_t *dev, return tn; } -static int yaffs_find_chunk_in_group(yaffs_dev_t *dev, int theChunk, - yaffs_ext_tags *tags, int obj_id, - int inode_chunk) +static int yaffs_tags_match(const struct yaffs_ext_tags *tags, int obj_id, + int chunk_obj) +{ + return (tags->chunk_id == chunk_obj && + tags->obj_id == obj_id && + !tags->is_deleted) ? 1 : 0; + +} + +static int yaffs_find_chunk_in_group(struct yaffs_dev *dev, int the_chunk, + struct yaffs_ext_tags *tags, int obj_id, + int inode_chunk) { int j; - 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; + for (j = 0; the_chunk && j < dev->chunk_grp_size; j++) { + if (yaffs_check_chunk_bit + (dev, the_chunk / dev->param.chunks_per_block, + the_chunk % dev->param.chunks_per_block)) { + + if (dev->chunk_grp_size == 1) + return the_chunk; else { - yaffs_rd_chunk_tags_nand(dev, theChunk, NULL, - tags); - if (yaffs_tags_match(tags, obj_id, inode_chunk)) { + yaffs_rd_chunk_tags_nand(dev, the_chunk, NULL, + tags); + if (yaffs_tags_match(tags, + obj_id, inode_chunk)) { /* found it; */ - return theChunk; + return the_chunk; } } } - theChunk++; + the_chunk++; } 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. - * Returns 1 if the tree was deleted. - * Returns 0 if it stopped early due to hitting the limit and the delete is incomplete. - */ +int yaffs_find_chunk_in_file(struct yaffs_obj *in, int inode_chunk, + struct yaffs_ext_tags *tags) +{ + /*Get the Tnode, then get the level 0 offset chunk offset */ + struct yaffs_tnode *tn; + int the_chunk = -1; + struct yaffs_ext_tags local_tags; + int ret_val = -1; + struct yaffs_dev *dev = in->my_dev; + + if (!tags) { + /* Passed a NULL, so use our own tags space */ + tags = &local_tags; + } -static int yaffs_del_worker(yaffs_obj_t *in, yaffs_tnode_t *tn, __u32 level, - int chunk_offset, int *limit) + tn = yaffs_find_tnode_0(dev, &in->variant.file_variant, inode_chunk); + + if (!tn) + return ret_val; + + the_chunk = yaffs_get_group_base(dev, tn, inode_chunk); + + ret_val = yaffs_find_chunk_in_group(dev, the_chunk, tags, in->obj_id, + inode_chunk); + return ret_val; +} + +static int yaffs_find_del_file_chunk(struct yaffs_obj *in, int inode_chunk, + struct yaffs_ext_tags *tags) { - int i; - int inode_chunk; - int theChunk; - yaffs_ext_tags tags; - int foundChunk; - yaffs_dev_t *dev = in->my_dev; + /* Get the Tnode, then get the level 0 offset chunk offset */ + struct yaffs_tnode *tn; + int the_chunk = -1; + struct yaffs_ext_tags local_tags; + struct yaffs_dev *dev = in->my_dev; + int ret_val = -1; - int allDone = 1; + if (!tags) { + /* Passed a NULL, so use our own tags space */ + tags = &local_tags; + } - 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; - } - } + tn = yaffs_find_tnode_0(dev, &in->variant.file_variant, inode_chunk); + + if (!tn) + return ret_val; + + the_chunk = yaffs_get_group_base(dev, tn, inode_chunk); + + ret_val = yaffs_find_chunk_in_group(dev, the_chunk, tags, in->obj_id, + inode_chunk); + + /* Delete the entry in the filestructure (if found) */ + if (ret_val != -1) + yaffs_load_tnode_0(dev, tn, inode_chunk, 0); + + return ret_val; +} + +int yaffs_put_chunk_in_file(struct yaffs_obj *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. + */ + + struct yaffs_tnode *tn; + struct yaffs_dev *dev = in->my_dev; + int existing_cunk; + struct yaffs_ext_tags existing_tags; + struct yaffs_ext_tags new_tags; + unsigned existing_serial, new_serial; + + 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) { + yaffs_trace(YAFFS_TRACE_ERROR, + "yaffs tragedy:attempt to put data chunk into a non-file" + ); + BUG(); + } + + yaffs_chunk_del(dev, nand_chunk, 1, __LINE__); + return YAFFS_OK; + } + + 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; + + existing_cunk = yaffs_get_group_base(dev, tn, inode_chunk); + + 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 + * 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 (existing_cunk > 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. + * 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, &new_tags); + + /* Do a proper find */ + existing_cunk = + yaffs_find_chunk_in_file(in, inode_chunk, + &existing_tags); } - return (allDone) ? 1 : 0; - } else if (level == 0) { - int hitLimit = 0; - - for (i = YAFFS_NTNODES_LEVEL0 - 1; i >= 0 && !hitLimit; - i--) { - theChunk = yaffs_get_group_base(dev, tn, i); - if (theChunk) { - - inode_chunk = (chunk_offset << - YAFFS_TNODES_LEVEL0_BITS) + i; - - foundChunk = - yaffs_find_chunk_in_group(dev, - theChunk, - &tags, - in->obj_id, - inode_chunk); - - if (foundChunk > 0) { - yaffs_chunk_del(dev, - foundChunk, 1, - __LINE__); - in->n_data_chunks--; - if (limit) { - *limit = *limit - 1; - if (*limit <= 0) - hitLimit = 1; - } - } + if (existing_cunk <= 0) { + /*Hoosterman - how did this happen? */ - yaffs_load_tnode_0(dev, tn, i, 0); - } + yaffs_trace(YAFFS_TRACE_ERROR, + "yaffs tragedy: existing chunk < 0 in scan" + ); } - return (i < 0) ? 1 : 0; + /* NB The deleted flags should be false, otherwise + * the chunks will not be loaded during a scan + */ + + if (in_scan > 0) { + new_serial = new_tags.serial_number; + existing_serial = existing_tags.serial_number; + } + + if ((in_scan > 0) && + (existing_cunk <= 0 || + ((existing_serial + 1) & 3) == new_serial)) { + /* Forward scanning. + * Use new + * Delete the old one and drop through to + * update the tnode + */ + yaffs_chunk_del(dev, existing_cunk, 1, + __LINE__); + } else { + /* Backward scanning or we want to use the + * existing one + * 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; + } } } - return 1; + if (existing_cunk == 0) + in->n_data_chunks++; -} + yaffs_load_tnode_0(dev, tn, inode_chunk, nand_chunk); -#endif + return YAFFS_OK; +} -static void yaffs_soft_del_chunk(yaffs_dev_t *dev, int chunk) +static void yaffs_soft_del_chunk(struct yaffs_dev *dev, int chunk) { - yaffs_block_info_t *theBlock; + struct yaffs_block_info *the_block; unsigned block_no; - T(YAFFS_TRACE_DELETION, (TSTR("soft delete chunk %d" TENDSTR), chunk)); + yaffs_trace(YAFFS_TRACE_DELETION, "soft delete chunk %d", chunk); - block_no = chunk / dev->param.chunks_per_block; - theBlock = yaffs_get_block_info(dev, block_no); - if (theBlock) { - theBlock->soft_del_pages++; + block_no = chunk / dev->param.chunks_per_block; + the_block = yaffs_get_block_info(dev, block_no); + if (the_block) { + the_block->soft_del_pages++; dev->n_free_chunks++; - yaffs2_update_oldest_dirty_seq(dev, block_no, theBlock); + yaffs2_update_oldest_dirty_seq(dev, block_no, the_block); } } -/* 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. +/* 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_soft_del_worker(yaffs_obj_t *in, yaffs_tnode_t *tn, - __u32 level, int chunk_offset) +static int yaffs_soft_del_worker(struct yaffs_obj *in, struct yaffs_tnode *tn, + u32 level, int chunk_offset) { int i; - int theChunk; - int allDone = 1; - yaffs_dev_t *dev = in->my_dev; + int the_chunk; + int all_done = 1; + struct yaffs_dev *dev = in->my_dev; - 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); - } + if (!tn) + return 1; + if (level > 0) { + for (i = YAFFS_NTNODES_INTERNAL - 1; + all_done && i >= 0; + i--) { + if (tn->internal[i]) { + all_done = + yaffs_soft_del_worker(in, + tn->internal[i], + level - 1, + (chunk_offset << + YAFFS_TNODES_INTERNAL_BITS) + + i); + if (all_done) { + yaffs_free_tnode(dev, + tn->internal[i]); + tn->internal[i] = NULL; + } else { + /* Can this happen? */ + } } - return 1; + } + return (all_done) ? 1 : 0; + } + /* level 0 */ + for (i = YAFFS_NTNODES_LEVEL0 - 1; i >= 0; i--) { + the_chunk = yaffs_get_group_base(dev, tn, i); + if (the_chunk) { + yaffs_soft_del_chunk(dev, the_chunk); + yaffs_load_tnode_0(dev, tn, i, 0); } + } + return 1; +} +static void yaffs_remove_obj_from_dir(struct yaffs_obj *obj) +{ + struct yaffs_dev *dev = obj->my_dev; + struct yaffs_obj *parent; + + yaffs_verify_obj_in_dir(obj); + parent = obj->parent; + + yaffs_verify_dir(parent); + + if (dev && dev->param.remove_obj_fn) + dev->param.remove_obj_fn(obj); + + list_del_init(&obj->siblings); + obj->parent = NULL; + + yaffs_verify_dir(parent); +} + +void yaffs_add_obj_to_dir(struct yaffs_obj *directory, struct yaffs_obj *obj) +{ + if (!directory) { + yaffs_trace(YAFFS_TRACE_ALWAYS, + "tragedy: Trying to add an object to a null pointer directory" + ); + BUG(); + return; + } + if (directory->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) { + yaffs_trace(YAFFS_TRACE_ALWAYS, + "tragedy: Trying to add an object to a non-directory" + ); + BUG(); } - return 1; + if (obj->siblings.prev == NULL) { + /* Not initialised */ + BUG(); + } + + yaffs_verify_dir(directory); + + yaffs_remove_obj_from_dir(obj); + + /* Now add it */ + list_add(&obj->siblings, &directory->variant.dir_variant.children); + obj->parent = directory; + + if (directory == obj->my_dev->unlinked_dir + || directory == obj->my_dev->del_dir) { + obj->unlinked = 1; + obj->my_dev->n_unlinked_files++; + obj->rename_allowed = 0; + } + yaffs_verify_dir(directory); + yaffs_verify_obj_in_dir(obj); } -static void yaffs_soft_del_file(yaffs_obj_t *obj) +static int yaffs_change_obj_name(struct yaffs_obj *obj, + struct yaffs_obj *new_dir, + const YCHAR *new_name, int force, int shadows) { - 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; - } + int unlink_op; + int del_op; + struct yaffs_obj *existing_target; + + if (new_dir == NULL) + new_dir = obj->parent; /* use the old directory */ + + if (new_dir->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) { + yaffs_trace(YAFFS_TRACE_ALWAYS, + "tragedy: yaffs_change_obj_name: new_dir is not a directory" + ); + BUG(); } + + unlink_op = (new_dir == obj->my_dev->unlinked_dir); + del_op = (new_dir == obj->my_dev->del_dir); + + existing_target = 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 OK. + * else only proceed if the new name does not exist and we're putting + * it into a directory. + */ + if (!(unlink_op || del_op || force || + shadows > 0 || !existing_target) || + new_dir->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) + return YAFFS_FAIL; + + yaffs_set_obj_name(obj, new_name); + obj->dirty = 1; + yaffs_add_obj_to_dir(new_dir, obj); + + if (unlink_op) + obj->unlinked = 1; + + /* If it is a deletion then we mark it as a shrink for gc */ + if (yaffs_update_oh(obj, new_name, 0, del_op, shadows, NULL) >= 0) + return YAFFS_OK; + + return YAFFS_FAIL; } -/* 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. +/*------------------------ Short Operations Cache ------------------------------ + * In many situations where there is no high level buffering 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 and the short op cache + * provides write buffering. * - * 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. + * There are a small number (~10) of cache chunks per device so that we don't + * need a very intelligent search. */ -static yaffs_tnode_t *yaffs_prune_worker(yaffs_dev_t *dev, yaffs_tnode_t *tn, - __u32 level, int del0) +static int yaffs_obj_cache_dirty(struct yaffs_obj *obj) { + struct yaffs_dev *dev = obj->my_dev; int i; - int hasData; + struct yaffs_cache *cache; + int n_caches = obj->my_dev->param.n_caches; - if (tn) { - hasData = 0; - - 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); - } + for (i = 0; i < n_caches; i++) { + cache = &dev->cache[i]; + if (cache->object == obj && cache->dirty) + return 1; + } + + return 0; +} - if (tn->internal[i]) - hasData++; +static void yaffs_flush_file_cache(struct yaffs_obj *obj) +{ + struct yaffs_dev *dev = obj->my_dev; + int lowest = -99; /* Stop compiler whining. */ + int i; + struct yaffs_cache *cache; + int chunk_written = 0; + int n_caches = obj->my_dev->param.n_caches; + + if (n_caches < 1) + return; + do { + cache = NULL; + + /* Find the lowest dirty chunk for this object */ + for (i = 0; i < n_caches; 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; + } } - } else { - int tnode_size_u32 = dev->tnode_size/sizeof(__u32); - __u32 *map = (__u32 *)tn; + } - for(i = 0; !hasData && i < tnode_size_u32; i++){ - if(map[i]) - hasData++; - } - } + if (cache && !cache->locked) { + /* Write it out and free it up */ + chunk_written = + yaffs_wr_data_obj(cache->object, + cache->chunk_id, + cache->data, + cache->n_bytes, 1); + cache->dirty = 0; + cache->object = NULL; + } + } while (cache && chunk_written > 0); - if (hasData == 0 && del0) { - /* Free and return NULL */ + if (cache) + /* Hoosterman, disk full while writing cache out. */ + yaffs_trace(YAFFS_TRACE_ERROR, + "yaffs tragedy: no space during cache write"); +} - yaffs_free_tnode(dev, tn); - tn = NULL; +/*yaffs_flush_whole_cache(dev) + * + * + */ + +void yaffs_flush_whole_cache(struct yaffs_dev *dev) +{ + struct yaffs_obj *obj; + int n_caches = dev->param.n_caches; + int i; + + /* Find a dirty object in the cache and flush it... + * until there are no further dirty objects. + */ + do { + obj = NULL; + for (i = 0; i < n_caches && !obj; i++) { + if (dev->cache[i].object && dev->cache[i].dirty) + obj = dev->cache[i].object; } + if (obj) + yaffs_flush_file_cache(obj); + } while (obj); - } +} - return tn; +/* 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 struct yaffs_cache *yaffs_grab_chunk_worker(struct yaffs_dev *dev) +{ + int 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 int yaffs_prune_tree(yaffs_dev_t *dev, - yaffs_file_s *file_struct) +static struct yaffs_cache *yaffs_grab_chunk_cache(struct yaffs_dev *dev) { + struct yaffs_cache *cache; + struct yaffs_obj *the_obj; + int usage; int i; - int hasData; - int done = 0; - yaffs_tnode_t *tn; + int pushout; - if (file_struct->top_level > 0) { - file_struct->top = - yaffs_prune_worker(dev, file_struct->top, file_struct->top_level, 0); + if (dev->param.n_caches < 1) + return NULL; + + /* Try find a non-dirty one... */ - /* 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) + cache = yaffs_grab_chunk_worker(dev); + + if (!cache) { + /* They were all dirty, find the LRU object and flush + * its cache, then find again. + * NB what's here is not very accurate, + * we actually flush the object with the LRU chunk. */ - while (file_struct->top_level && !done) { - tn = file_struct->top; + /* With locking we can't assume we can use entry zero, + * Set the_obj to a valid pointer for Coverity. */ + the_obj = dev->cache[0].object; + usage = -1; + cache = NULL; + pushout = -1; - hasData = 0; - for (i = 1; i < YAFFS_NTNODES_INTERNAL; i++) { - if (tn->internal[i]) - hasData++; + 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; + the_obj = dev->cache[i].object; + cache = &dev->cache[i]; + pushout = i; } + } - if (!hasData) { - file_struct->top = tn->internal[0]; - file_struct->top_level--; - yaffs_free_tnode(dev, tn); - } else { - done = 1; - } + if (!cache || cache->dirty) { + /* Flush and try again */ + yaffs_flush_file_cache(the_obj); + cache = yaffs_grab_chunk_worker(dev); } } - - return YAFFS_OK; + return cache; } -/*-------------------- End of File Structure functions.-------------------*/ - - -/* 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) +/* Find a cached chunk */ +static struct yaffs_cache *yaffs_find_chunk_cache(const struct yaffs_obj *obj, + int chunk_id) { - yaffs_obj_t *obj = yaffs_alloc_raw_obj(dev); - - if (obj) { - dev->n_obj++; + struct yaffs_dev *dev = obj->my_dev; + int i; - /* Now sweeten it up... */ + if (dev->param.n_caches < 1) + return NULL; - memset(obj, 0, sizeof(yaffs_obj_t)); - obj->being_created = 1; + 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++; - 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); + return &dev->cache[i]; + } + } + return NULL; +} +/* Mark the chunk for the least recently used algorithym */ +static void yaffs_use_cache(struct yaffs_dev *dev, struct yaffs_cache *cache, + int is_write) +{ + int i; - /* 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); - } + if (dev->param.n_caches < 1) + return; - /* 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); + if (dev->cache_last_use < 0 || + dev->cache_last_use > 100000000) { + /* Reset the cache usages */ + for (i = 1; i < dev->param.n_caches; i++) + dev->cache[i].last_use = 0; - obj->being_created = 0; + dev->cache_last_use = 0; } + dev->cache_last_use++; + cache->last_use = dev->cache_last_use; - dev->checkpoint_blocks_required = 0; /* force recalculation*/ - - return obj; + if (is_write) + cache->dirty = 1; } -static yaffs_obj_t *yaffs_create_fake_dir(yaffs_dev_t *dev, int number, - __u32 mode) +/* 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(struct yaffs_obj *object, int chunk_id) { + struct yaffs_cache *cache; - 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. */ + if (object->my_dev->param.n_caches > 0) { + cache = yaffs_find_chunk_cache(object, chunk_id); + + if (cache) + cache->object = NULL; } +} - return obj; +/* Invalidate all the cache pages associated with this object + * Do this whenever ther file is deleted or resized. + */ +static void yaffs_invalidate_whole_cache(struct yaffs_obj *in) +{ + int i; + struct yaffs_dev *dev = in->my_dev; + 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; + } + } } -static void yaffs_unhash_obj(yaffs_obj_t *obj) +static void yaffs_unhash_obj(struct yaffs_obj *obj) { int bucket; - yaffs_dev_t *dev = obj->my_dev; + struct yaffs_dev *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); + if (!list_empty(&obj->hash_link)) { + list_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_free_obj(yaffs_obj_t *obj) +static void yaffs_free_obj(struct yaffs_obj *obj) { - yaffs_dev_t *dev = obj->my_dev; + struct yaffs_dev *dev; - T(YAFFS_TRACE_OS, (TSTR("FreeObject %p inode %p"TENDSTR), obj, obj->my_inode)); - - if (!obj) - YBUG(); + if (!obj) { + BUG(); + return; + } + dev = obj->my_dev; + yaffs_trace(YAFFS_TRACE_OS, "FreeObject %p inode %p", + obj, obj->my_inode); if (obj->parent) - YBUG(); - if (!ylist_empty(&obj->siblings)) - YBUG(); - + BUG(); + if (!list_empty(&obj->siblings)) + BUG(); if (obj->my_inode) { /* We're still hooked up to a cached inode. @@ -1320,40 +1633,213 @@ static void yaffs_free_obj(yaffs_obj_t *obj) yaffs_unhash_obj(obj); - yaffs_free_raw_obj(dev,obj); + yaffs_free_raw_obj(dev, obj); dev->n_obj--; - dev->checkpoint_blocks_required = 0; /* force recalculation*/ + dev->checkpoint_blocks_required = 0; /* force recalculation */ } - -void yaffs_handle_defered_free(yaffs_obj_t *obj) +void yaffs_handle_defered_free(struct yaffs_obj *obj) { if (obj->defered_free) yaffs_free_obj(obj); } -static void yaffs_init_tnodes_and_objs(yaffs_dev_t *dev) +static int yaffs_generic_obj_del(struct yaffs_obj *in) +{ + /* Iinvalidate the file's data in the cache, without flushing. */ + yaffs_invalidate_whole_cache(in); + + if (in->my_dev->param.is_yaffs2 && in->parent != in->my_dev->del_dir) { + /* Move to unlinked directory so we have a deletion record */ + yaffs_change_obj_name(in, in->my_dev->del_dir, _Y("deleted"), 0, + 0); + } + + 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; + +} + +static void yaffs_soft_del_file(struct yaffs_obj *obj) +{ + if (!obj->deleted || + obj->variant_type != YAFFS_OBJECT_TYPE_FILE || + obj->soft_del) + return; + + 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; + yaffs_trace(YAFFS_TRACE_TRACING, + "yaffs: Deleting empty file %d", + 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; + } +} + +/* 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 struct yaffs_tnode *yaffs_prune_worker(struct yaffs_dev *dev, + struct yaffs_tnode *tn, u32 level, + int del0) { int i; + int has_data; - dev->n_obj = 0; - dev->n_tnodes = 0; + if (!tn) + return tn; + + has_data = 0; + + 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); + } - yaffs_init_raw_tnodes_and_objs(dev); + if (tn->internal[i]) + has_data++; + } + } else { + int tnode_size_u32 = dev->tnode_size / sizeof(u32); + u32 *map = (u32 *) tn; - for (i = 0; i < YAFFS_NOBJECT_BUCKETS; i++) { - YINIT_LIST_HEAD(&dev->obj_bucket[i].list); - dev->obj_bucket[i].count = 0; + for (i = 0; !has_data && i < tnode_size_u32; i++) { + if (map[i]) + has_data++; + } + } + + if (has_data == 0 && del0) { + /* Free and return NULL */ + yaffs_free_tnode(dev, tn); + tn = NULL; + } + return tn; +} + +static int yaffs_prune_tree(struct yaffs_dev *dev, + struct yaffs_file_var *file_struct) +{ + int i; + int has_data; + int done = 0; + struct yaffs_tnode *tn; + + if (file_struct->top_level < 1) + return YAFFS_OK; + + 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) + */ + + while (file_struct->top_level && !done) { + tn = file_struct->top; + + has_data = 0; + for (i = 1; i < YAFFS_NTNODES_INTERNAL; i++) { + if (tn->internal[i]) + has_data++; + } + + if (!has_data) { + file_struct->top = tn->internal[0]; + file_struct->top_level--; + yaffs_free_tnode(dev, tn); + } else { + done = 1; + } + } + + return YAFFS_OK; +} + +/*-------------------- End of File Structure functions.-------------------*/ + +/* alloc_empty_obj gets us a clean Object.*/ +static struct yaffs_obj *yaffs_alloc_empty_obj(struct yaffs_dev *dev) +{ + struct yaffs_obj *obj = yaffs_alloc_raw_obj(dev); + + if (!obj) + return obj; + + dev->n_obj++; + + /* Now sweeten it up... */ + + memset(obj, 0, sizeof(struct yaffs_obj)); + obj->being_created = 1; + + obj->my_dev = dev; + obj->hdr_chunk = 0; + obj->variant_type = YAFFS_OBJECT_TYPE_UNKNOWN; + INIT_LIST_HEAD(&(obj->hard_links)); + INIT_LIST_HEAD(&(obj->hash_link)); + INIT_LIST_HEAD(&obj->siblings); + + /* Now make the directory sane */ + if (dev->root_dir) { + obj->parent = dev->root_dir; + list_add(&(obj->siblings), + &dev->root_dir->variant.dir_variant.children); } + + /* Add it to the lost and found directory. + * NB Can't put root or lost-n-found in lost-n-found so + * check if lost-n-found 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; } -static int yaffs_find_nice_bucket(yaffs_dev_t *dev) +static int yaffs_find_nice_bucket(struct yaffs_dev *dev) { int i; int l = 999; int lowest = 999999; - /* Search for the shortest list or one that * isn't too long. */ @@ -1365,82 +1851,72 @@ static int yaffs_find_nice_bucket(yaffs_dev_t *dev) lowest = dev->obj_bucket[dev->bucket_finder].count; l = dev->bucket_finder; } - } return l; } -static int yaffs_new_obj_id(yaffs_dev_t *dev) +static int yaffs_new_obj_id(struct yaffs_dev *dev) { int bucket = yaffs_find_nice_bucket(dev); + int found = 0; + struct list_head *i; + u32 n = (u32) bucket; /* 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_check_obj_hash_sane(); */ - 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) { + list_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) { + if (i && list_entry(i, struct yaffs_obj, + hash_link)->obj_id == n) { found = 0; } } } } - return n; } -static void yaffs_hash_obj(yaffs_obj_t *in) +static void yaffs_hash_obj(struct yaffs_obj *in) { int bucket = yaffs_hash_fn(in->obj_id); - yaffs_dev_t *dev = in->my_dev; + struct yaffs_dev *dev = in->my_dev; - ylist_add(&in->hash_link, &dev->obj_bucket[bucket].list); + list_add(&in->hash_link, &dev->obj_bucket[bucket].list); dev->obj_bucket[bucket].count++; } -yaffs_obj_t *yaffs_find_by_number(yaffs_dev_t *dev, __u32 number) +struct yaffs_obj *yaffs_find_by_number(struct yaffs_dev *dev, u32 number) { int bucket = yaffs_hash_fn(number); - struct ylist_head *i; - yaffs_obj_t *in; + struct list_head *i; + struct yaffs_obj *in; - ylist_for_each(i, &dev->obj_bucket[bucket].list) { + list_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) { - - /* Don't tell the VFS about this one if it is defered free */ - if (in->defered_free) - return NULL; - - return in; - } + in = list_entry(i, struct yaffs_obj, hash_link); + if (in->obj_id == number) { + /* Don't show if it is defered free */ + if (in->defered_free) + return NULL; + return in; } } return NULL; } -yaffs_obj_t *yaffs_new_obj(yaffs_dev_t *dev, int number, - yaffs_obj_type type) +static struct yaffs_obj *yaffs_new_obj(struct yaffs_dev *dev, int number, + enum yaffs_obj_type type) { - yaffs_obj_t *theObject=NULL; - yaffs_tnode_t *tn = NULL; + struct yaffs_obj *the_obj = NULL; + struct yaffs_tnode *tn = NULL; if (number < 0) number = yaffs_new_obj_id(dev); @@ -1451,876 +1927,666 @@ yaffs_obj_t *yaffs_new_obj(yaffs_dev_t *dev, int number, return NULL; } - theObject = yaffs_alloc_empty_obj(dev); - if (!theObject){ - if(tn) - yaffs_free_tnode(dev,tn); + the_obj = yaffs_alloc_empty_obj(dev); + if (!the_obj) { + if (tn) + yaffs_free_tnode(dev, tn); return NULL; } + the_obj->fake = 0; + the_obj->rename_allowed = 1; + the_obj->unlink_allowed = 1; + the_obj->obj_id = number; + yaffs_hash_obj(the_obj); + the_obj->variant_type = type; + yaffs_load_current_time(the_obj, 1, 1); - 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]; + switch (type) { + case YAFFS_OBJECT_TYPE_FILE: + the_obj->variant.file_variant.file_size = 0; + the_obj->variant.file_variant.scanned_size = 0; + the_obj->variant.file_variant.shrink_size = + yaffs_max_file_size(dev); + the_obj->variant.file_variant.top_level = 0; + the_obj->variant.file_variant.top = tn; + break; + case YAFFS_OBJECT_TYPE_DIRECTORY: + INIT_LIST_HEAD(&the_obj->variant.dir_variant.children); + INIT_LIST_HEAD(&the_obj->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 the_obj; +} -#else +static struct yaffs_obj *yaffs_create_fake_dir(struct yaffs_dev *dev, + int number, u32 mode) +{ - 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; - } - } + struct yaffs_obj *obj = + yaffs_new_obj(dev, number, YAFFS_OBJECT_TYPE_DIRECTORY); + + if (!obj) + return NULL; - return theObject; + obj->fake = 1; /* it is fake so it might not use NAND */ + obj->rename_allowed = 0; + obj->unlink_allowed = 0; + 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_init_tnodes_and_objs(struct yaffs_dev *dev) +{ + int i; + + dev->n_obj = 0; + dev->n_tnodes = 0; + yaffs_init_raw_tnodes_and_objs(dev); + + for (i = 0; i < YAFFS_NOBJECT_BUCKETS; i++) { + INIT_LIST_HEAD(&dev->obj_bucket[i].list); + dev->obj_bucket[i].count = 0; + } } -yaffs_obj_t *yaffs_find_or_create_by_number(yaffs_dev_t *dev, - int number, - yaffs_obj_type type) +struct yaffs_obj *yaffs_find_or_create_by_number(struct yaffs_dev *dev, + int number, + enum yaffs_obj_type type) { - yaffs_obj_t *theObject = NULL; + struct yaffs_obj *the_obj = NULL; if (number > 0) - theObject = yaffs_find_by_number(dev, number); + the_obj = yaffs_find_by_number(dev, number); - if (!theObject) - theObject = yaffs_new_obj(dev, number, type); + if (!the_obj) + the_obj = yaffs_new_obj(dev, number, type); - return theObject; + return the_obj; } - YCHAR *yaffs_clone_str(const YCHAR *str) { - YCHAR *newStr = NULL; + YCHAR *new_str = NULL; int len; 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; + len = strnlen(str, YAFFS_MAX_ALIAS_LENGTH); + new_str = kmalloc((len + 1) * sizeof(YCHAR), GFP_NOFS); + if (new_str) { + strncpy(new_str, str, len); + new_str[len] = 0; } - return newStr; + return new_str; } +/* + *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(struct yaffs_obj *obj) +{ + struct yaffs_dev *dev; + + if (!obj) + return; + dev = obj->my_dev; + obj->dirty = 1; + yaffs_load_current_time(obj, 0, 1); + if (dev->param.defered_dir_update) { + struct list_head *link = &obj->variant.dir_variant.dirty; + + if (list_empty(link)) { + list_add(link, &dev->dirty_dirs); + yaffs_trace(YAFFS_TRACE_BACKGROUND, + "Added object %d to dirty directories", + obj->obj_id); + } + + } else { + yaffs_update_oh(obj, NULL, 0, 0, 0, NULL); + } +} + +void yaffs_update_dirty_dirs(struct yaffs_dev *dev) +{ + struct list_head *link; + struct yaffs_obj *obj; + struct yaffs_dir_var *d_s; + union yaffs_obj_var *o_v; + + yaffs_trace(YAFFS_TRACE_BACKGROUND, "Update dirty directories"); + + while (!list_empty(&dev->dirty_dirs)) { + link = dev->dirty_dirs.next; + list_del_init(link); + + d_s = list_entry(link, struct yaffs_dir_var, dirty); + o_v = list_entry(d_s, union yaffs_obj_var, dir_variant); + obj = list_entry(o_v, struct yaffs_obj, variant); + + yaffs_trace(YAFFS_TRACE_BACKGROUND, "Update directory %d", + obj->obj_id); + + if (obj->dirty) + yaffs_update_oh(obj, NULL, 0, 0, 0, NULL); + } +} /* * Mknod (create) a new object. * equiv_obj only has meaning for a hard link; - * aliasString only has meaning for a symlink. + * alias_str only has meaning for a symlink. * rdev only has meaning for devices (a subset of special objects) */ -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) +static struct yaffs_obj *yaffs_create_obj(enum yaffs_obj_type type, + struct yaffs_obj *parent, + const YCHAR *name, + u32 mode, + u32 uid, + u32 gid, + struct yaffs_obj *equiv_obj, + const YCHAR *alias_str, u32 rdev) { - yaffs_obj_t *in; + struct yaffs_obj *in; YCHAR *str = NULL; + struct yaffs_dev *dev = parent->my_dev; - 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.*/ + /* 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 (type == YAFFS_OBJECT_TYPE_SYMLINK) { - str = yaffs_clone_str(aliasString); + str = yaffs_clone_str(alias_str); if (!str) return NULL; } in = yaffs_new_obj(dev, -1, type); - if (!in){ - if(str) - YFREE(str); + if (!in) { + kfree(str); return NULL; } + in->hdr_chunk = 0; + in->valid = 1; + in->variant_type = type; + in->yst_mode = mode; + yaffs_attribs_init(in, gid, uid, rdev); + in->n_data_chunks = 0; - if (in) { - in->hdr_chunk = 0; - in->valid = 1; - in->variant_type = type; - - in->yst_mode = mode; - -#ifdef CONFIG_YAFFS_WINCE - 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 - 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->n_data_chunks = 0; - - yaffs_set_obj_name(in, name); - in->dirty = 1; + yaffs_set_obj_name(in, name); + in->dirty = 1; - yaffs_add_obj_to_dir(parent, in); + yaffs_add_obj_to_dir(parent, in); - in->my_dev = parent->my_dev; + 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: - 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: - case YAFFS_OBJECT_TYPE_SPECIAL: - case YAFFS_OBJECT_TYPE_UNKNOWN: - /* do nothing */ - break; - } + switch (type) { + case YAFFS_OBJECT_TYPE_SYMLINK: + in->variant.symlink_variant.alias = str; + break; + case YAFFS_OBJECT_TYPE_HARDLINK: + in->variant.hardlink_variant.equiv_obj = equiv_obj; + in->variant.hardlink_variant.equiv_id = equiv_obj->obj_id; + list_add(&in->hard_links, &equiv_obj->hard_links); + 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_update_oh(in, name, 0, 0, 0, NULL) < 0) { - /* Could not create the object header, fail the creation */ - yaffs_del_obj(in); - in = NULL; - } + if (yaffs_update_oh(in, name, 0, 0, 0, NULL) < 0) { + /* Could not create the object header, fail */ + yaffs_del_obj(in); + in = NULL; + } + if (in) yaffs_update_parent(parent); - } return in; } -yaffs_obj_t *yaffs_create_file(yaffs_obj_t *parent, const YCHAR *name, - __u32 mode, __u32 uid, __u32 gid) +struct yaffs_obj *yaffs_create_file(struct yaffs_obj *parent, + const YCHAR *name, u32 mode, u32 uid, + u32 gid) { return yaffs_create_obj(YAFFS_OBJECT_TYPE_FILE, parent, name, mode, uid, gid, NULL, NULL, 0); } -yaffs_obj_t *yaffs_create_dir(yaffs_obj_t *parent, const YCHAR *name, - __u32 mode, __u32 uid, __u32 gid) +struct yaffs_obj *yaffs_create_dir(struct yaffs_obj *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); + 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) +struct yaffs_obj *yaffs_create_special(struct yaffs_obj *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); + uid, gid, NULL, NULL, rdev); } -yaffs_obj_t *yaffs_create_symlink(yaffs_obj_t *parent, const YCHAR *name, - __u32 mode, __u32 uid, __u32 gid, - const YCHAR *alias) +struct yaffs_obj *yaffs_create_symlink(struct yaffs_obj *parent, + const YCHAR *name, u32 mode, u32 uid, + u32 gid, const YCHAR *alias) { return yaffs_create_obj(YAFFS_OBJECT_TYPE_SYMLINK, parent, name, mode, uid, gid, NULL, alias, 0); } /* 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) +struct yaffs_obj *yaffs_link_obj(struct yaffs_obj *parent, const YCHAR * name, + struct yaffs_obj *equiv_obj) { - /* Get the real object in case we were fed a hard link as an equivalent object */ + /* Get the real object in case we were fed a hard link obj */ equiv_obj = yaffs_get_equivalent_obj(equiv_obj); - if (yaffs_create_obj - (YAFFS_OBJECT_TYPE_HARDLINK, parent, name, 0, 0, 0, - equiv_obj, NULL, 0)) { + if (yaffs_create_obj(YAFFS_OBJECT_TYPE_HARDLINK, + parent, name, 0, 0, 0, + equiv_obj, NULL, 0)) return equiv_obj; - } else { - return 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; - - yaffs_obj_t *existingTarget; - - 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); - deleteOp = (new_dir == obj->my_dev->del_dir); - - 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. - * 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) && - 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); - - if (unlinkOp) - obj->unlinked = 1; - - /* 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; } -int yaffs_rename_obj(yaffs_obj_t *old_dir, const YCHAR *old_name, - yaffs_obj_t *new_dir, const YCHAR *new_name) -{ - yaffs_obj_t *obj = NULL; - yaffs_obj_t *existingTarget = NULL; - int force = 0; - int result; - yaffs_dev_t *dev; - if (!old_dir || old_dir->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) - YBUG(); - if (!new_dir || new_dir->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) - YBUG(); +/*---------------------- Block Management and Page Allocation -------------*/ - 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 (old_dir == new_dir && yaffs_strcmp(old_name, new_name) == 0) - force = 1; -#endif - - if(yaffs_strnlen(new_name,YAFFS_MAX_NAME_LENGTH+1) > YAFFS_MAX_NAME_LENGTH) - /* ENAMETOOLONG */ - return YAFFS_FAIL; - - obj = yaffs_find_by_name(old_dir, old_name); - - if (obj && obj->rename_allowed) { - - /* Now do the handling for an existing target, if there is one */ +static void yaffs_deinit_blocks(struct yaffs_dev *dev) +{ + if (dev->block_info_alt && dev->block_info) + vfree(dev->block_info); + else + kfree(dev->block_info); - 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; - } + dev->block_info_alt = 0; - result = yaffs_change_obj_name(obj, new_dir, new_name, 1, 0); + dev->block_info = NULL; - yaffs_update_parent(old_dir); - if(new_dir != old_dir) - yaffs_update_parent(new_dir); - - return result; - } - return YAFFS_FAIL; + if (dev->chunk_bits_alt && dev->chunk_bits) + vfree(dev->chunk_bits); + else + kfree(dev->chunk_bits); + dev->chunk_bits_alt = 0; + dev->chunk_bits = NULL; } -/*------------------------- Block Management and Page Allocation ----------------*/ - -static int yaffs_init_blocks(yaffs_dev_t *dev) +static int yaffs_init_blocks(struct yaffs_dev *dev) { - int nBlocks = dev->internal_end_block - dev->internal_start_block + 1; + int n_blocks = dev->internal_end_block - dev->internal_start_block + 1; dev->block_info = NULL; dev->chunk_bits = NULL; - dev->alloc_block = -1; /* force it to get a new one */ /* If the first allocation strategy fails, thry the alternate one */ - dev->block_info = YMALLOC(nBlocks * sizeof(yaffs_block_info_t)); + dev->block_info = + kmalloc(n_blocks * sizeof(struct yaffs_block_info), GFP_NOFS); if (!dev->block_info) { - dev->block_info = YMALLOC_ALT(nBlocks * sizeof(yaffs_block_info_t)); + dev->block_info = + vmalloc(n_blocks * sizeof(struct yaffs_block_info)); dev->block_info_alt = 1; - } else + } else { dev->block_info_alt = 0; - - 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 (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; -} + if (!dev->block_info) + goto alloc_error; -static void yaffs_deinit_blocks(yaffs_dev_t *dev) -{ - if (dev->block_info_alt && dev->block_info) - YFREE_ALT(dev->block_info); - else if (dev->block_info) - YFREE(dev->block_info); + /* Set up dynamic blockinfo stuff. Round up bytes. */ + dev->chunk_bit_stride = (dev->param.chunks_per_block + 7) / 8; + dev->chunk_bits = + kmalloc(dev->chunk_bit_stride * n_blocks, GFP_NOFS); + if (!dev->chunk_bits) { + dev->chunk_bits = + vmalloc(dev->chunk_bit_stride * n_blocks); + dev->chunk_bits_alt = 1; + } else { + dev->chunk_bits_alt = 0; + } + if (!dev->chunk_bits) + goto alloc_error; - dev->block_info_alt = 0; - dev->block_info = NULL; + memset(dev->block_info, 0, n_blocks * sizeof(struct yaffs_block_info)); + memset(dev->chunk_bits, 0, dev->chunk_bit_stride * n_blocks); + return YAFFS_OK; - 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; +alloc_error: + yaffs_deinit_blocks(dev); + return YAFFS_FAIL; } -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; +void yaffs_block_became_dirty(struct yaffs_dev *dev, int block_no) +{ + struct yaffs_block_info *bi = yaffs_get_block_info(dev, block_no); + int erased_ok = 0; + int i; /* 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_block_became_dirty block %d state %d %s"TENDSTR), - block_no, bi->block_state, (bi->needs_retiring) ? "needs retiring" : "")); + yaffs_trace(YAFFS_TRACE_GC | YAFFS_TRACE_ERASE, + "yaffs_block_became_dirty block %d state %d %s", + block_no, bi->block_state, + (bi->needs_retiring) ? "needs retiring" : ""); - yaffs2_clear_oldest_dirty_seq(dev,bi); + yaffs2_clear_oldest_dirty_seq(dev, bi); 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) + /* If this is the block being garbage collected then stop gc'ing */ + 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){ + /* 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) { + erased_ok = yaffs_erase_block(dev, block_no); + if (!erased_ok) { dev->n_erase_failures++; - T(YAFFS_TRACE_ERROR | YAFFS_TRACE_BAD_BLOCKS, - (TSTR("**>> Erasure failed %d" TENDSTR), block_no)); + yaffs_trace(YAFFS_TRACE_ERROR | YAFFS_TRACE_BAD_BLOCKS, + "**>> Erasure failed %d", block_no); } } - if (erasedOk && - ((yaffs_trace_mask & YAFFS_TRACE_ERASE) || !yaffs_skip_verification(dev))) { - int i; + /* Verify erasure if needed */ + if (erased_ok && + ((yaffs_trace_mask & YAFFS_TRACE_ERASE) || + !yaffs_skip_verification(dev))) { 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 (!yaffs_check_chunk_erased(dev, + block_no * dev->param.chunks_per_block + i)) { + yaffs_trace(YAFFS_TRACE_ERROR, + ">>Block %d erasure supposedly OK, but chunk %d not erased", + 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); - - 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 */ - + if (!erased_ok) { + /* We lost a block of free space */ + dev->n_free_chunks -= dev->param.chunks_per_block; yaffs_retire_block(dev, block_no); - T(YAFFS_TRACE_ERROR | YAFFS_TRACE_BAD_BLOCKS, - (TSTR("**>> Block %d retired" TENDSTR), block_no)); - } -} - -static int yaffs_find_alloc_block(yaffs_dev_t *dev) -{ - int i; - - yaffs_block_info_t *bi; - - 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))); - - return -1; - } - - /* Find an empty block. */ - - 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_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; - } + yaffs_trace(YAFFS_TRACE_ERROR | YAFFS_TRACE_BAD_BLOCKS, + "**>> Block %d retired", block_no); + return; } - T(YAFFS_TRACE_ALWAYS, - (TSTR - ("yaffs tragedy: no more erased blocks, but there should have been %d" - TENDSTR), dev->n_erased_blocks)); - - return -1; -} - - -/* - * 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) -{ - int reservedChunks; - int reservedBlocks = dev->param.n_reserved_blocks; - int checkpointBlocks; - - checkpointBlocks = yaffs_calc_checkpt_blocks_required(dev); + /* 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; /* Clean, so no need to check */ + bi->gc_prioritise = 0; + bi->has_summary = 0; - reservedChunks = ((reservedBlocks + checkpointBlocks) * dev->param.chunks_per_block); + yaffs_clear_chunk_bits(dev, block_no); - return (dev->n_free_chunks > (reservedChunks + n_chunks)); + yaffs_trace(YAFFS_TRACE_ERASE, "Erased block %d", block_no); } -static int yaffs_alloc_chunk(yaffs_dev_t *dev, int useReserve, - yaffs_block_info_t **blockUsedPtr) +static inline int yaffs_gc_process_chunk(struct yaffs_dev *dev, + struct yaffs_block_info *bi, + int old_chunk, u8 *buffer) { - int retVal; - yaffs_block_info_t *bi; + int new_chunk; + int mark_flash = 1; + struct yaffs_ext_tags tags; + struct yaffs_obj *object; + int matching_chunk; + int ret_val = YAFFS_OK; - if (dev->alloc_block < 0) { - /* Get next block to allocate off */ - dev->alloc_block = yaffs_find_alloc_block(dev); - dev->alloc_page = 0; - } + memset(&tags, 0, sizeof(tags)); + yaffs_rd_chunk_tags_nand(dev, old_chunk, + buffer, &tags); + object = yaffs_find_by_number(dev, tags.obj_id); - 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->n_erased_blocks < dev->param.n_reserved_blocks - && dev->alloc_page == 0) { - T(YAFFS_TRACE_ALLOCATE, (TSTR("Allocating reserve" TENDSTR))); - } + yaffs_trace(YAFFS_TRACE_GC_DETAIL, + "Collecting chunk in block %d, %d %d %d ", + dev->gc_chunk, tags.obj_id, + tags.chunk_id, tags.n_bytes); - /* Next page please.... */ - if (dev->alloc_block >= 0) { - bi = yaffs_get_block_info(dev, dev->alloc_block); - - 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->alloc_page++; + if (object && !yaffs_skip_verification(dev)) { + if (tags.chunk_id == 0) + matching_chunk = + object->hdr_chunk; + else if (object->soft_del) + /* Defeat the test */ + matching_chunk = old_chunk; + else + matching_chunk = + yaffs_find_chunk_in_file + (object, tags.chunk_id, + NULL); + + if (old_chunk != matching_chunk) + yaffs_trace(YAFFS_TRACE_ERROR, + "gc: page in gc mismatch: %d %d %d %d", + old_chunk, + matching_chunk, + tags.obj_id, + tags.chunk_id); + } + + if (!object) { + yaffs_trace(YAFFS_TRACE_ERROR, + "page %d in gc has no object: %d %d %d ", + old_chunk, + tags.obj_id, tags.chunk_id, + tags.n_bytes); + } + + 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--; - /* 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; + object->n_data_chunks--; + if (object->n_data_chunks <= 0) { + /* remeber to clean up obj */ + dev->gc_cleanup_list[dev->n_clean_ups] = tags.obj_id; + dev->n_clean_ups++; } + mark_flash = 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++; + dev->n_gc_copies++; + + if (tags.chunk_id == 0) { + /* It is an object Id, + * We need to nuke the + * shrinkheader flags since its + * work is done. + * Also need to clean up + * shadowing. + */ + struct yaffs_obj_hdr *oh; + oh = (struct yaffs_obj_hdr *) buffer; + + oh->is_shrink = 0; + tags.extra_is_shrink = 0; + 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) { + yaffs_oh_size_load(oh, + object->variant.file_variant.file_size); + tags.extra_file_size = + object->variant.file_variant.file_size; + } - if (blockUsedPtr) - *blockUsedPtr = bi; - - return retVal; - } - - T(YAFFS_TRACE_ERROR, - (TSTR("!!!!!!!!! Allocator out !!!!!!!!!!!!!!!!!" TENDSTR))); - - return -1; -} - -static int yaffs_get_erased_chunks(yaffs_dev_t *dev) -{ - int n; - - n = dev->n_erased_blocks * dev->param.chunks_per_block; - - if (dev->alloc_block > 0) - n += (dev->param.chunks_per_block - dev->alloc_page); + yaffs_verify_oh(object, oh, &tags, 1); + new_chunk = + yaffs_write_new_chunk(dev, (u8 *) oh, &tags, 1); + } else { + new_chunk = + yaffs_write_new_chunk(dev, buffer, &tags, 1); + } - return n; + if (new_chunk < 0) { + ret_val = YAFFS_FAIL; + } else { -} + /* Now fix up the Tnodes etc. */ -/* - * 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; + if (tags.chunk_id == 0) { + /* It's a header */ + object->hdr_chunk = new_chunk; + object->serial = tags.serial_number; + } else { + /* It's a data chunk */ + yaffs_put_chunk_in_file(object, tags.chunk_id, + new_chunk, 0); + } } } + if (ret_val == YAFFS_OK) + yaffs_chunk_del(dev, old_chunk, mark_flash, __LINE__); + return ret_val; } - -static int yaffs_gc_block(yaffs_dev_t *dev, int block, - int wholeBlock) +static int yaffs_gc_block(struct yaffs_dev *dev, int block, int whole_block) { - int oldChunk; - int newChunk; - int mark_flash; - int retVal = YAFFS_OK; + int old_chunk; + int ret_val = YAFFS_OK; int i; - int isCheckpointBlock; - int matchingChunk; - int maxCopies; - - int chunksBefore = yaffs_get_erased_chunks(dev); - int chunksAfter; + int is_checkpt_block; + int max_copies; + int chunks_before = yaffs_get_erased_chunks(dev); + int chunks_after; + struct yaffs_block_info *bi = yaffs_get_block_info(dev, block); - yaffs_ext_tags tags; + is_checkpt_block = (bi->block_state == YAFFS_BLOCK_STATE_CHECKPOINT); - yaffs_block_info_t *bi = yaffs_get_block_info(dev, block); - - yaffs_obj_t *object; - - isCheckpointBlock = (bi->block_state == YAFFS_BLOCK_STATE_CHECKPOINT); - - - 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)); + yaffs_trace(YAFFS_TRACE_TRACING, + "Collecting block %d, in use %d, shrink %d, whole_block %d", + block, bi->pages_in_use, bi->has_shrink_hdr, + whole_block); /*yaffs_verify_free_chunks(dev); */ - if(bi->block_state == YAFFS_BLOCK_STATE_FULL) + 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->gc_disable = 1; - 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_summary_gc(dev, block); + + if (is_checkpt_block || !yaffs_still_some_chunks(dev, block)) { + yaffs_trace(YAFFS_TRACE_TRACING, + "Collecting block %d that has no chunks in use", + block); yaffs_block_became_dirty(dev, block); } else { - __u8 *buffer = yaffs_get_temp_buffer(dev, __LINE__); + u8 *buffer = yaffs_get_temp_buffer(dev); yaffs_verify_blk(dev, bi, block); - maxCopies = (wholeBlock) ? dev->param.chunks_per_block : 5; - oldChunk = block * dev->param.chunks_per_block + dev->gc_chunk; + max_copies = (whole_block) ? dev->param.chunks_per_block : 5; + old_chunk = block * dev->param.chunks_per_block + dev->gc_chunk; - for (/* init already done */; - retVal == YAFFS_OK && + for (/* init already done */ ; + ret_val == YAFFS_OK && dev->gc_chunk < dev->param.chunks_per_block && (bi->block_state == YAFFS_BLOCK_STATE_COLLECTING) && - maxCopies > 0; - dev->gc_chunk++, oldChunk++) { + max_copies > 0; + dev->gc_chunk++, old_chunk++) { if (yaffs_check_chunk_bit(dev, block, dev->gc_chunk)) { - - /* This page is in use and might need to be copied off */ - - maxCopies--; - - mark_flash = 1; - - yaffs_init_tags(&tags); - - yaffs_rd_chunk_tags_nand(dev, oldChunk, - buffer, &tags); - - 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)); - - 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); - - 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)); - - } - - 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)); - } - - 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 (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); - - } 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++; - - dev->n_gc_copies++; - - 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_obj_header *oh; - oh = (yaffs_obj_header *)buffer; - - oh->is_shrink = 0; - tags.extra_is_shrink = 0; - - 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 { - - /* Ok, now fix up the Tnodes etc. */ - - 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 (retVal == YAFFS_OK) - yaffs_chunk_del(dev, oldChunk, mark_flash, __LINE__); - + /* Page is in use and might need to be copied */ + max_copies--; + ret_val = yaffs_gc_process_chunk(dev, bi, + old_chunk, buffer); } } - - yaffs_release_temp_buffer(dev, buffer, __LINE__); - - - + yaffs_release_temp_buffer(dev, buffer); } 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 @@ -2332,32 +2598,25 @@ static int yaffs_gc_block(yaffs_dev_t *dev, int block, /* 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]); + struct yaffs_obj *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); object->variant.file_variant.top = NULL; - T(YAFFS_TRACE_GC, - (TSTR - ("yaffs: About to finally delete object %d" - TENDSTR), object->obj_id)); + yaffs_trace(YAFFS_TRACE_GC, + "yaffs: About to finally delete object %d", + 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)); - } + chunks_after = yaffs_get_erased_chunks(dev); + if (chunks_before >= chunks_after) + yaffs_trace(YAFFS_TRACE_GC, + "gc did not increase free chunks before %d after %d", + chunks_before, chunks_after); dev->gc_block = 0; dev->gc_chunk = 0; dev->n_clean_ups = 0; @@ -2365,24 +2624,23 @@ static int yaffs_gc_block(yaffs_dev_t *dev, int block, dev->gc_disable = 0; - return retVal; + return ret_val; } /* - * FindBlockForgarbageCollection is used to select the dirtiest block (or close enough) + * find_gc_block() selects the dirtiest block (or close enough) * for garbage collection. */ -static unsigned yaffs_find_gc_block(yaffs_dev_t *dev, - int aggressive, - int background) +static unsigned yaffs_find_gc_block(struct yaffs_dev *dev, + int aggressive, int background) { int i; int iterations; unsigned selected = 0; int prioritised = 0; - int prioritisedExists = 0; - yaffs_block_info_t *bi; + int prioritised_exist = 0; + struct yaffs_block_info *bi; int threshold; /* First let's see if we need to grab a prioritised block */ @@ -2390,13 +2648,12 @@ static unsigned yaffs_find_gc_block(yaffs_dev_t *dev, dev->gc_dirtiest = 0; bi = dev->block_info; for (i = dev->internal_start_block; - i <= dev->internal_end_block && !selected; - i++) { + i <= dev->internal_end_block && !selected; i++) { if (bi->gc_prioritise) { - prioritisedExists = 1; + prioritised_exist = 1; if (bi->block_state == YAFFS_BLOCK_STATE_FULL && - yaffs_block_ok_for_gc(dev, bi)) { + yaffs_block_ok_for_gc(dev, bi)) { selected = i; prioritised = 1; } @@ -2406,124 +2663,125 @@ static unsigned yaffs_find_gc_block(yaffs_dev_t *dev, /* * 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. + * 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) + if (prioritised_exist && + !selected && dev->oldest_dirty_block > 0) selected = dev->oldest_dirty_block; - if (!prioritisedExists) /* None found, so we can clear this */ + if (!prioritised_exist) /* None found, so we can clear this */ dev->has_pending_prioritised_gc = 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 + /* If we're doing aggressive GC then we are happy to take a less-dirty + * block, and search harder. + * else (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){ + if (!selected) { + int pages_used; + int n_blocks = + dev->internal_end_block - dev->internal_start_block + 1; + if (aggressive) { threshold = dev->param.chunks_per_block; - iterations = nBlocks; + iterations = n_blocks; } else { - int maxThreshold; + int max_threshold; - if(background) - maxThreshold = dev->param.chunks_per_block/2; + if (background) + max_threshold = dev->param.chunks_per_block / 2; else - maxThreshold = dev->param.chunks_per_block/8; + max_threshold = dev->param.chunks_per_block / 8; - if(maxThreshold < YAFFS_GC_PASSIVE_THRESHOLD) - maxThreshold = YAFFS_GC_PASSIVE_THRESHOLD; + if (max_threshold < YAFFS_GC_PASSIVE_THRESHOLD) + max_threshold = YAFFS_GC_PASSIVE_THRESHOLD; - threshold = background ? - (dev->gc_not_done + 2) * 2 : 0; - if(threshold <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; + if (threshold > max_threshold) + threshold = max_threshold; - iterations = nBlocks / 16 + 1; + iterations = n_blocks / 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++) { + 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; + 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; + pages_used = 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)) { + pages_used < dev->param.chunks_per_block && + (dev->gc_dirtiest < 1 || + pages_used < 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; + dev->gc_pages_in_use = pages_used; } } - if(dev->gc_dirtiest > 0 && dev->gc_pages_in_use <= threshold) + if (dev->gc_dirtiest > 0 && dev->gc_pages_in_use <= threshold) selected = dev->gc_dirtiest; } /* - * If nothing has been selected for a while, try selecting the oldest dirty + * If nothing has been selected for a while, try the oldest dirty * because that's gumming up the works. */ - if(!selected && dev->param.is_yaffs2 && - dev->gc_not_done >= ( background ? 10 : 20)){ + 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) { + 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_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)); + if (selected) { + yaffs_trace(YAFFS_TRACE_GC, + "GC Selected block %d with %d free, prioritised:%d", + selected, + dev->param.chunks_per_block - dev->gc_pages_in_use, + prioritised); dev->n_gc_blocks++; - if(background) + 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) + if (dev->refresh_skip > 0) dev->refresh_skip--; - } else{ + } 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" : "")); + yaffs_trace(YAFFS_TRACE_GC, + "GC none: finder %d skip %d threshold %d dirtiest %d using %d oldest %d%s", + 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; @@ -2533,53 +2791,54 @@ static unsigned yaffs_find_gc_block(yaffs_dev_t *dev, * 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. + * Passive gc only inspects smaller areas and only accepts 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_check_gc(yaffs_dev_t *dev, int background) +static int yaffs_check_gc(struct yaffs_dev *dev, int background) { int aggressive = 0; - int gcOk = YAFFS_OK; - int maxTries = 0; - int minErased; - int erasedChunks; - int checkpointBlockAdjust; - - if(dev->param.gc_control && - (dev->param.gc_control(dev) & 1) == 0) + int gc_ok = YAFFS_OK; + int max_tries = 0; + int min_erased; + int erased_chunks; + int checkpt_block_adjust; + + if (dev->param.gc_control_fn && + (dev->param.gc_control_fn(dev) & 1) == 0) return YAFFS_OK; - if (dev->gc_disable) { + 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 collection does not increase space. + * Only loops here if the collection does not increase space. */ do { - maxTries++; + max_tries++; - checkpointBlockAdjust = yaffs_calc_checkpt_blocks_required(dev); + checkpt_block_adjust = yaffs_calc_checkpt_blocks_required(dev); - minErased = dev->param.n_reserved_blocks + checkpointBlockAdjust + 1; - erasedChunks = dev->n_erased_blocks * dev->param.chunks_per_block; + min_erased = + dev->param.n_reserved_blocks + checkpt_block_adjust + 1; + erased_chunks = + dev->n_erased_blocks * dev->param.chunks_per_block; - /* If we need a block soon then do aggressive gc.*/ - if (dev->n_erased_blocks < minErased) + /* If we need a block soon then do aggressive gc. */ + if (dev->n_erased_blocks < min_erased) aggressive = 1; else { - if(!background && erasedChunks > (dev->n_free_chunks / 4)) + if (!background + && erased_chunks > (dev->n_free_chunks / 4)) break; - if(dev->gc_skip > 20) + if (dev->gc_skip > 20) dev->gc_skip = 20; - if(erasedChunks < dev->n_free_chunks/2 || - dev->gc_skip < 1 || - background) + if (erased_chunks < dev->n_free_chunks / 2 || + dev->gc_skip < 1 || background) aggressive = 0; else { dev->gc_skip--; @@ -2589,17 +2848,19 @@ static int yaffs_check_gc(yaffs_dev_t *dev, int background) dev->gc_skip = 5; - /* If we don't already have a block being gc'd then see if we should start another */ + /* 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; + dev->n_clean_ups = 0; } if (dev->gc_block < 1) { - dev->gc_block = yaffs_find_gc_block(dev, aggressive, background); + dev->gc_block = + yaffs_find_gc_block(dev, aggressive, background); dev->gc_chunk = 0; - dev->n_clean_ups=0; + dev->n_clean_ups = 0; } if (dev->gc_block > 0) { @@ -2607,25 +2868,24 @@ static int yaffs_check_gc(yaffs_dev_t *dev, int background) if (!aggressive) dev->passive_gc_count++; - T(YAFFS_TRACE_GC, - (TSTR - ("yaffs: GC erasedBlocks %d aggressive %d" TENDSTR), - dev->n_erased_blocks, aggressive)); + yaffs_trace(YAFFS_TRACE_GC, + "yaffs: GC n_erased_blocks %d aggressive %d", + dev->n_erased_blocks, aggressive); - gcOk = yaffs_gc_block(dev, dev->gc_block, aggressive); + gc_ok = yaffs_gc_block(dev, dev->gc_block, aggressive); } - 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)); + if (dev->n_erased_blocks < (dev->param.n_reserved_blocks) && + dev->gc_block > 0) { + yaffs_trace(YAFFS_TRACE_GC, + "yaffs: GC !!!no reclaim!!! n_erased_blocks %d after try %d block %d", + dev->n_erased_blocks, max_tries, + dev->gc_block); } } while ((dev->n_erased_blocks < dev->param.n_reserved_blocks) && - (dev->gc_block > 0) && - (maxTries < 2)); + (dev->gc_block > 0) && (max_tries < 2)); - return aggressive ? gcOk : YAFFS_OK; + return aggressive ? gc_ok : YAFFS_OK; } /* @@ -2633,222 +2893,19 @@ static int yaffs_check_gc(yaffs_dev_t *dev, int background) * 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 yaffs_bg_gc(struct yaffs_dev *dev, unsigned urgency) { - int erasedChunks = dev->n_erased_blocks * dev->param.chunks_per_block; + int erased_chunks = dev->n_erased_blocks * dev->param.chunks_per_block; - T(YAFFS_TRACE_BACKGROUND, (TSTR("Background gc %u" TENDSTR),urgency)); + yaffs_trace(YAFFS_TRACE_BACKGROUND, "Background gc %u", urgency); yaffs_check_gc(dev, 1); - return erasedChunks > dev->n_free_chunks/2; -} - -/*------------------------- TAGS --------------------------------*/ - -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; - + return erased_chunks > dev->n_free_chunks / 2; } - /*-------------------- Data file manipulation -----------------*/ -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; - - yaffs_dev_t *dev = in->my_dev; - - if (!tags) { - /* Passed a NULL, so use our own tags space */ - tags = &localTags; - } - - tn = yaffs_find_tnode_0(dev, &in->variant.file_variant, inode_chunk); - - if (tn) { - theChunk = yaffs_get_group_base(dev, tn, inode_chunk); - - retVal = - yaffs_find_chunk_in_group(dev, theChunk, tags, in->obj_id, - inode_chunk); - } - return retVal; -} - -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; - - yaffs_dev_t *dev = in->my_dev; - int retVal = -1; - - if (!tags) { - /* Passed a NULL, so use our own tags space */ - tags = &localTags; - } - - tn = yaffs_find_tnode_0(dev, &in->variant.file_variant, inode_chunk); - - if (tn) { - - theChunk = yaffs_get_group_base(dev, tn, inode_chunk); - - retVal = - 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_load_tnode_0(dev, tn, inode_chunk, 0); - } - - return retVal; -} - - -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_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; - } - - 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_get_group_base(dev, tn, inode_chunk); - - 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); - } - - 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 (in_scan > 0) { - newSerial = newTags.serial_number; - existingSerial = existingTags.serial_number; - } - - 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; - } - } - - } - - if (existingChunk == 0) - in->n_data_chunks++; - - yaffs_load_tnode_0(dev, tn, inode_chunk, nand_chunk); - - return YAFFS_OK; -} - -static int yaffs_rd_data_obj(yaffs_obj_t *in, int inode_chunk, - __u8 *buffer) +static int yaffs_rd_data_obj(struct yaffs_obj *in, int inode_chunk, u8 * buffer) { int nand_chunk = yaffs_find_chunk_in_file(in, inode_chunk, NULL); @@ -2856,9 +2913,9 @@ static int yaffs_rd_data_obj(yaffs_obj_t *in, int inode_chunk, 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)); + yaffs_trace(YAFFS_TRACE_NANDACCESS, + "Chunk %d not found zero instead", + nand_chunk); /* get sane (zero) data if you read a hole */ memset(buffer, 0, in->my_dev->data_bytes_per_chunk); return 0; @@ -2866,12 +2923,13 @@ static int yaffs_rd_data_obj(yaffs_obj_t *in, int inode_chunk, } -void yaffs_chunk_del(yaffs_dev_t *dev, int chunk_id, int mark_flash, int lyn) +void yaffs_chunk_del(struct yaffs_dev *dev, int chunk_id, int mark_flash, + int lyn) { int block; int page; - yaffs_ext_tags tags; - yaffs_block_info_t *bi; + struct yaffs_ext_tags tags; + struct yaffs_block_info *bi; if (chunk_id <= 0) return; @@ -2880,26 +2938,23 @@ void yaffs_chunk_del(yaffs_dev_t *dev, int chunk_id, int mark_flash, int lyn) block = chunk_id / dev->param.chunks_per_block; page = chunk_id % dev->param.chunks_per_block; - if (!yaffs_check_chunk_bit(dev, block, page)) - T(YAFFS_TRACE_VERIFY, - (TSTR("Deleting invalid chunk %d"TENDSTR), - chunk_id)); + yaffs_trace(YAFFS_TRACE_VERIFY, + "Deleting invalid chunk %d", 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)); + yaffs_trace(YAFFS_TRACE_DELETION, + "line %d delete of chunk %d", + lyn, chunk_id); if (!dev->param.is_yaffs2 && mark_flash && bi->block_state != YAFFS_BLOCK_STATE_COLLECTING) { - yaffs_init_tags(&tags); - + memset(&tags, 0, sizeof(tags)); tags.is_deleted = 1; - yaffs_wr_chunk_tags_nand(dev, chunk_id, NULL, &tags); yaffs_handle_chunk_update(dev, chunk_id, &tags); } else { @@ -2911,519 +2966,449 @@ void yaffs_chunk_del(yaffs_dev_t *dev, int chunk_id, int mark_flash, int lyn) */ 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_NEEDS_SCAN || bi->block_state == YAFFS_BLOCK_STATE_COLLECTING) { dev->n_free_chunks++; - 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) { + bi->block_state != YAFFS_BLOCK_STATE_NEEDS_SCAN) { yaffs_block_became_dirty(dev, block); } - } - } -static int yaffs_wr_data_obj(yaffs_obj_t *in, int inode_chunk, - const __u8 *buffer, int n_bytes, - int useReserve) +static int yaffs_wr_data_obj(struct yaffs_obj *in, int inode_chunk, + const u8 *buffer, int n_bytes, int use_reserve) { /* Find old chunk Need to do this to get serial number * Write new one and patch into tree. * Invalidate old tags. */ - int prevChunkId; - yaffs_ext_tags prevTags; - - int newChunkId; - yaffs_ext_tags newTags; + int prev_chunk_id; + struct yaffs_ext_tags prev_tags; + int new_chunk_id; + struct yaffs_ext_tags new_tags; + struct yaffs_dev *dev = in->my_dev; - yaffs_dev_t *dev = in->my_dev; - - yaffs_check_gc(dev,0); + yaffs_check_gc(dev, 0); /* 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)) + prev_chunk_id = yaffs_find_chunk_in_file(in, inode_chunk, &prev_tags); + if (prev_chunk_id < 1 && + !yaffs_put_chunk_in_file(in, inode_chunk, 0, 0)) return 0; /* Set up new tags */ - yaffs_init_tags(&newTags); + memset(&new_tags, 0, sizeof(new_tags)); - 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; + new_tags.chunk_id = inode_chunk; + new_tags.obj_id = in->obj_id; + new_tags.serial_number = + (prev_chunk_id > 0) ? prev_tags.serial_number + 1 : 1; + new_tags.n_bytes = n_bytes; 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(); + yaffs_trace(YAFFS_TRACE_ERROR, + "Writing %d bytes to chunk!!!!!!!!!", + n_bytes); + BUG(); } - - - newChunkId = - yaffs_write_new_chunk(dev, buffer, &newTags, - useReserve); - if (newChunkId > 0) { - yaffs_put_chunk_in_file(in, inode_chunk, newChunkId, 0); + new_chunk_id = + yaffs_write_new_chunk(dev, buffer, &new_tags, use_reserve); + + if (new_chunk_id > 0) { + yaffs_put_chunk_in_file(in, inode_chunk, new_chunk_id, 0); - if (prevChunkId > 0) - yaffs_chunk_del(dev, prevChunkId, 1, __LINE__); + if (prev_chunk_id > 0) + yaffs_chunk_del(dev, prev_chunk_id, 1, __LINE__); yaffs_verify_file_sane(in); } - return newChunkId; + return new_chunk_id; } -/* 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_block_info_t *bi; - - yaffs_dev_t *dev = in->my_dev; - - int prevChunkId; - int retVal = 0; - int result = 0; - - 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]; - - yaffs_obj_header *oh = NULL; - yaffs_strcpy(old_name, _Y("silly old name")); +static int yaffs_do_xattrib_mod(struct yaffs_obj *obj, int set, + const YCHAR *name, const void *value, int size, + int flags) +{ + struct yaffs_xattr_mod xmod; + int result; - 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); + xmod.set = set; + xmod.name = name; + xmod.data = value; + xmod.size = size; + xmod.flags = flags; + xmod.result = -ENOSPC; - buffer = yaffs_get_temp_buffer(in->my_dev, __LINE__); - oh = (yaffs_obj_header *) buffer; + result = yaffs_update_oh(obj, NULL, 0, 0, 0, &xmod); - prevChunkId = in->hdr_chunk; + if (result > 0) + return xmod.result; + else + return -ENOSPC; +} - if (prevChunkId > 0) { - result = yaffs_rd_chunk_tags_nand(dev, prevChunkId, - buffer, &oldTags); +static int yaffs_apply_xattrib_mod(struct yaffs_obj *obj, char *buffer, + struct yaffs_xattr_mod *xmod) +{ + int retval = 0; + int x_offs = sizeof(struct yaffs_obj_hdr); + struct yaffs_dev *dev = obj->my_dev; + int x_size = dev->data_bytes_per_chunk - sizeof(struct yaffs_obj_hdr); + 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); - yaffs_verify_oh(in, oh, &oldTags, 0); + obj->has_xattr = nval_hasvalues(x_buffer, x_size); + obj->xattr_known = 1; + xmod->result = retval; - memcpy(old_name, oh->name, sizeof(oh->name)); - memset(buffer, 0xFF, sizeof(yaffs_obj_header)); - } else - memset(buffer, 0xFF, dev->data_bytes_per_chunk); + return retval; +} - oh->type = in->variant_type; - oh->yst_mode = in->yst_mode; - oh->shadows_obj = oh->inband_shadowed_obj_id = shadows; +static int yaffs_do_xattrib_fetch(struct yaffs_obj *obj, const YCHAR *name, + void *value, int size) +{ + char *buffer = NULL; + int result; + struct yaffs_ext_tags tags; + struct yaffs_dev *dev = obj->my_dev; + int x_offs = sizeof(struct yaffs_obj_hdr); + int x_size = dev->data_bytes_per_chunk - sizeof(struct yaffs_obj_hdr); + char *x_buffer; + int retval = 0; -#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]; -#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 (obj->hdr_chunk < 1) + return -ENODATA; - 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)); + /* 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 - memset(oh->name, 0, sizeof(oh->name)); - - oh->is_shrink = is_shrink; - - 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; - } + return 0; + } - /* process any xattrib modifications */ - if(xmod) - yaffs_apply_xattrib_mod(in, (char *)buffer, xmod); + buffer = (char *)yaffs_get_temp_buffer(dev); + if (!buffer) + return -ENOMEM; + result = + yaffs_rd_chunk_tags_nand(dev, obj->hdr_chunk, (u8 *) buffer, &tags); - /* Tags */ - yaffs_init_tags(&newTags); - in->serial++; - newTags.chunk_id = 0; - newTags.obj_id = in->obj_id; - newTags.serial_number = in->serial; + if (result != YAFFS_OK) + retval = -ENOENT; + else { + x_buffer = buffer + x_offs; - /* Add extra info for file header */ + if (!obj->xattr_known) { + obj->has_xattr = nval_hasvalues(x_buffer, x_size); + obj->xattr_known = 1; + } - 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 (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); + return retval; +} - yaffs_verify_oh(in, oh, &newTags, 1); +int yaffs_set_xattrib(struct yaffs_obj *obj, const YCHAR * name, + const void *value, int size, int flags) +{ + return yaffs_do_xattrib_mod(obj, 1, name, value, size, flags); +} - /* Create new chunk in NAND */ - newChunkId = - yaffs_write_new_chunk(dev, buffer, &newTags, - (prevChunkId > 0) ? 1 : 0); +int yaffs_remove_xattrib(struct yaffs_obj *obj, const YCHAR * name) +{ + return yaffs_do_xattrib_mod(obj, 0, name, NULL, 0, 0); +} - if (newChunkId >= 0) { +int yaffs_get_xattrib(struct yaffs_obj *obj, const YCHAR * name, void *value, + int size) +{ + return yaffs_do_xattrib_fetch(obj, name, value, size); +} - in->hdr_chunk = newChunkId; +int yaffs_list_xattrib(struct yaffs_obj *obj, char *buffer, int size) +{ + return yaffs_do_xattrib_fetch(obj, NULL, buffer, size); +} - if (prevChunkId > 0) { - yaffs_chunk_del(dev, prevChunkId, 1, - __LINE__); - } +static void yaffs_check_obj_details_loaded(struct yaffs_obj *in) +{ + u8 *buf; + struct yaffs_obj_hdr *oh; + struct yaffs_dev *dev; + struct yaffs_ext_tags tags; + int result; + int alloc_failed = 0; - if (!yaffs_obj_cache_dirty(in)) - in->dirty = 0; + if (!in || !in->lazy_loaded || in->hdr_chunk < 1) + return; - /* 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; - } + dev = in->my_dev; + in->lazy_loaded = 0; + buf = yaffs_get_temp_buffer(dev); - } + result = yaffs_rd_chunk_tags_nand(dev, in->hdr_chunk, buf, &tags); + oh = (struct yaffs_obj_hdr *)buf; - retVal = newChunkId; + in->yst_mode = oh->yst_mode; + yaffs_load_attribs(in, oh); + yaffs_set_obj_name_from_oh(in, oh); + 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 */ } - - if (buffer) - yaffs_release_temp_buffer(dev, buffer, __LINE__); - - return retVal; + yaffs_release_temp_buffer(dev, buf); } -/*------------------------ 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_obj_cache_dirty(yaffs_obj_t *obj) +static void yaffs_load_name_from_oh(struct yaffs_dev *dev, YCHAR *name, + const YCHAR *oh_name, int buff_size) { - yaffs_dev_t *dev = obj->my_dev; - int i; - yaffs_cache_t *cache; - int nCaches = obj->my_dev->param.n_caches; - - for (i = 0; i < nCaches; i++) { - cache = &dev->cache[i]; - if (cache->object == obj && - cache->dirty) - return 1; +#ifdef CONFIG_YAFFS_AUTO_UNICODE + if (dev->param.auto_unicode) { + if (*oh_name) { + /* It is an ASCII name, do an ASCII to + * unicode conversion */ + const char *ascii_oh_name = (const char *)oh_name; + int n = buff_size - 1; + while (n > 0 && *ascii_oh_name) { + *name = *ascii_oh_name; + name++; + ascii_oh_name++; + n--; + } + } else { + strncpy(name, oh_name + 1, buff_size - 1); + } + } else { +#else + (void) dev; + { +#endif + strncpy(name, oh_name, buff_size - 1); } - - return 0; } - -static void yaffs_flush_file_cache(yaffs_obj_t *obj) +static void yaffs_load_oh_from_name(struct yaffs_dev *dev, YCHAR *oh_name, + const YCHAR *name) { - 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; - - if (nCaches > 0) { - do { - cache = NULL; - - /* 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; - } - } - } +#ifdef CONFIG_YAFFS_AUTO_UNICODE - if (cache && !cache->locked) { - /* Write it out and free it up */ - - chunkWritten = - yaffs_wr_data_obj(cache->object, - cache->chunk_id, - cache->data, - cache->n_bytes, - 1); - cache->dirty = 0; - cache->object = NULL; - } + int is_ascii; + YCHAR *w; - } while (cache && chunkWritten > 0); + if (dev->param.auto_unicode) { - if (cache) { - /* Hoosterman, disk full while writing cache out. */ - T(YAFFS_TRACE_ERROR, - (TSTR("yaffs tragedy: no space during cache write" TENDSTR))); + is_ascii = 1; + w = name; + /* Figure out if the name will fit in ascii character set */ + while (is_ascii && *w) { + if ((*w) & 0xff00) + is_ascii = 0; + w++; } - } - -} - -/*yaffs_flush_whole_cache(dev) - * - * - */ - -void yaffs_flush_whole_cache(yaffs_dev_t *dev) -{ - yaffs_obj_t *obj; - int nCaches = dev->param.n_caches; - int i; - - /* 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 (is_ascii) { + /* It is an ASCII name, so convert unicode to ascii */ + char *ascii_oh_name = (char *)oh_name; + int n = YAFFS_MAX_NAME_LENGTH - 1; + while (n > 0 && *name) { + *ascii_oh_name = *name; + name++; + ascii_oh_name++; + n--; + } + } else { + /* Unicode name, so save starting at the second YCHAR */ + *oh_name = 0; + strncpy(oh_name + 1, name, YAFFS_MAX_NAME_LENGTH - 2); } - if (obj) - yaffs_flush_file_cache(obj); - - } while (obj); - + } else { +#else + dev = dev; + { +#endif + strncpy(oh_name, name, YAFFS_MAX_NAME_LENGTH - 1); + } } - -/* 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. +/* UpdateObjectHeader updates the header on NAND for an object. + * If name is not NULL, then that new name is used. */ -static yaffs_cache_t *yaffs_grab_chunk_worker(yaffs_dev_t *dev) +int yaffs_update_oh(struct yaffs_obj *in, const YCHAR *name, int force, + int is_shrink, int shadows, struct yaffs_xattr_mod *xmod) { - int 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]; - } - } + struct yaffs_block_info *bi; + struct yaffs_dev *dev = in->my_dev; + int prev_chunk_id; + int ret_val = 0; + int result = 0; + int new_chunk_id; + struct yaffs_ext_tags new_tags; + struct yaffs_ext_tags old_tags; + const YCHAR *alias = NULL; + u8 *buffer = NULL; + YCHAR old_name[YAFFS_MAX_NAME_LENGTH + 1]; + struct yaffs_obj_hdr *oh = NULL; + loff_t file_size = 0; - return NULL; -} + strcpy(old_name, _Y("silly old name")); -static yaffs_cache_t *yaffs_grab_chunk_cache(yaffs_dev_t *dev) -{ - yaffs_cache_t *cache; - yaffs_obj_t *theObj; - int usage; - int i; - int pushout; + if (in->fake && in != dev->root_dir && !force && !xmod) + return ret_val; - if (dev->param.n_caches > 0) { - /* Try find a non-dirty one... */ + yaffs_check_gc(dev, 0); + yaffs_check_obj_details_loaded(in); - cache = yaffs_grab_chunk_worker(dev); + buffer = yaffs_get_temp_buffer(in->my_dev); + oh = (struct yaffs_obj_hdr *)buffer; - 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. - */ + prev_chunk_id = in->hdr_chunk; - /* With locking we can't assume we can use entry zero */ + if (prev_chunk_id > 0) { + result = yaffs_rd_chunk_tags_nand(dev, prev_chunk_id, + buffer, &old_tags); - theObj = NULL; - usage = -1; - cache = NULL; - pushout = -1; + yaffs_verify_oh(in, oh, &old_tags, 0); + memcpy(old_name, oh->name, sizeof(oh->name)); + memset(buffer, 0xff, sizeof(struct yaffs_obj_hdr)); + } else { + memset(buffer, 0xff, dev->data_bytes_per_chunk); + } - 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; - } - } + oh->type = in->variant_type; + oh->yst_mode = in->yst_mode; + oh->shadows_obj = oh->inband_shadowed_obj_id = shadows; - if (!cache || cache->dirty) { - /* Flush and try again */ - yaffs_flush_file_cache(theObj); - cache = yaffs_grab_chunk_worker(dev); - } + yaffs_load_attribs_oh(oh, in); - } - return cache; - } else - return NULL; + 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 (prev_chunk_id > 0) { + memcpy(oh->name, old_name, sizeof(oh->name)); + } else { + memset(oh->name, 0, sizeof(oh->name)); + } -/* 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++; + oh->is_shrink = is_shrink; - return &dev->cache[i]; - } - } + switch (in->variant_type) { + case YAFFS_OBJECT_TYPE_UNKNOWN: + /* Should not happen */ + break; + case YAFFS_OBJECT_TYPE_FILE: + if (oh->parent_obj_id != YAFFS_OBJECTID_DELETED && + oh->parent_obj_id != YAFFS_OBJECTID_UNLINKED) + file_size = in->variant.file_variant.file_size; + yaffs_oh_size_load(oh, 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"); + strncpy(oh->alias, alias, YAFFS_MAX_ALIAS_LENGTH); + oh->alias[YAFFS_MAX_ALIAS_LENGTH] = 0; + break; } - 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) -{ + /* process any xattrib modifications */ + if (xmod) + yaffs_apply_xattrib_mod(in, (char *)buffer, xmod); + + /* Tags */ + memset(&new_tags, 0, sizeof(new_tags)); + in->serial++; + new_tags.chunk_id = 0; + new_tags.obj_id = in->obj_id; + new_tags.serial_number = in->serial; + + /* Add extra info for file header */ + new_tags.extra_available = 1; + new_tags.extra_parent_id = oh->parent_obj_id; + new_tags.extra_file_size = file_size; + new_tags.extra_is_shrink = oh->is_shrink; + new_tags.extra_equiv_id = oh->equiv_id; + new_tags.extra_shadows = (oh->shadows_obj > 0) ? 1 : 0; + new_tags.extra_obj_type = in->variant_type; + yaffs_verify_oh(in, oh, &new_tags, 1); + + /* Create new chunk in NAND */ + new_chunk_id = + yaffs_write_new_chunk(dev, buffer, &new_tags, + (prev_chunk_id > 0) ? 1 : 0); - 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; + if (buffer) + yaffs_release_temp_buffer(dev, buffer); - dev->cache_last_use = 0; - } + if (new_chunk_id < 0) + return new_chunk_id; - dev->cache_last_use++; + in->hdr_chunk = new_chunk_id; - cache->last_use = dev->cache_last_use; + if (prev_chunk_id > 0) + yaffs_chunk_del(dev, prev_chunk_id, 1, __LINE__); - if (isAWrite) - cache->dirty = 1; - } -} + if (!yaffs_obj_cache_dirty(in)) + in->dirty = 0; -/* 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); - - if (cache) - cache->object = NULL; + /* 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, + new_chunk_id / + in->my_dev->param.chunks_per_block); + bi->has_shrink_hdr = 1; } -} -/* 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) -{ - int i; - yaffs_dev_t *dev = in->my_dev; - 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; - } - } + return new_chunk_id; } - /*--------------------- File read/write ------------------------ * Read and write have very similar structures. * In general the read/write has three parts to it @@ -3434,24 +3419,19 @@ static void yaffs_invalidate_whole_cache(yaffs_obj_t *in) * Curve-balls: the first chunk might also be the last chunk. */ -int yaffs_file_rd(yaffs_obj_t *in, __u8 *buffer, loff_t offset, - int n_bytes) +int yaffs_file_rd(struct yaffs_obj *in, u8 * buffer, loff_t offset, int n_bytes) { - int chunk; - __u32 start; - int nToCopy; + u32 start; + int n_copy; int n = n_bytes; - int nDone = 0; - yaffs_cache_t *cache; - - yaffs_dev_t *dev; + int n_done = 0; + struct yaffs_cache *cache; + struct yaffs_dev *dev; 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++; @@ -3459,30 +3439,32 @@ int yaffs_file_rd(yaffs_obj_t *in, __u8 *buffer, loff_t offset, * the same chunk. */ if ((start + n) < dev->data_bytes_per_chunk) - nToCopy = n; + n_copy = n; else - nToCopy = dev->data_bytes_per_chunk - start; + n_copy = 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 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 (cache || n_copy != 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 we can't find the data in the cache, + * then load it up. */ if (!cache) { - cache = yaffs_grab_chunk_cache(in->my_dev); + 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->data); cache->n_bytes = 0; } @@ -3490,294 +3472,287 @@ int yaffs_file_rd(yaffs_obj_t *in, __u8 *buffer, loff_t offset, cache->locked = 1; - - memcpy(buffer, &cache->data[start], nToCopy); + memcpy(buffer, &cache->data[start], n_copy); cache->locked = 0; } else { - /* Read into the local buffer then copy..*/ - - __u8 *localBuffer = - yaffs_get_temp_buffer(dev, __LINE__); - yaffs_rd_data_obj(in, chunk, - localBuffer); + /* Read into the local buffer then copy.. */ - memcpy(buffer, &localBuffer[start], nToCopy); + u8 *local_buffer = + yaffs_get_temp_buffer(dev); + yaffs_rd_data_obj(in, chunk, local_buffer); + memcpy(buffer, &local_buffer[start], n_copy); - yaffs_release_temp_buffer(dev, localBuffer, - __LINE__); + yaffs_release_temp_buffer(dev, local_buffer); } - } else { - - /* A full chunk. Read directly into the supplied buffer. */ + /* A full chunk. Read directly into the buffer. */ yaffs_rd_data_obj(in, chunk, buffer); - } - - n -= nToCopy; - offset += nToCopy; - buffer += nToCopy; - nDone += nToCopy; - + n -= n_copy; + offset += n_copy; + buffer += n_copy; + n_done += n_copy; } - - return nDone; + return n_done; } -int yaffs_do_file_wr(yaffs_obj_t *in, const __u8 *buffer, loff_t offset, - int n_bytes, int write_trhrough) +int yaffs_do_file_wr(struct yaffs_obj *in, const u8 *buffer, loff_t offset, + int n_bytes, int write_through) { int chunk; - __u32 start; - int nToCopy; + u32 start; + int n_copy; int n = n_bytes; - int nDone = 0; - int nToWriteBack; - int startOfWrite = offset; - int chunkWritten = 0; - __u32 n_bytesRead; - __u32 chunkStart; - - yaffs_dev_t *dev; + int n_done = 0; + int n_writeback; + loff_t start_write = offset; + int chunk_written = 0; + u32 n_bytes_read; + loff_t chunk_start; + struct yaffs_dev *dev; dev = in->my_dev; - while (n > 0 && chunkWritten >= 0) { + while (n > 0 && chunk_written >= 0) { yaffs_addr_to_chunk(dev, offset, &chunk, &start); - 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)); + if (((loff_t)chunk) * + dev->data_bytes_per_chunk + start != offset || + start >= dev->data_bytes_per_chunk) { + yaffs_trace(YAFFS_TRACE_ERROR, + "AddrToChunk of offset %lld gives chunk %d start %d", + offset, chunk, start); } - chunk++; /* File pos to chunk in file offset */ + 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->data_bytes_per_chunk) { - nToCopy = n; + n_copy = n; - /* 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. + /* Now 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. */ - chunkStart = ((chunk - 1) * dev->data_bytes_per_chunk); + chunk_start = (((loff_t)(chunk - 1)) * + dev->data_bytes_per_chunk); - if (chunkStart > in->variant.file_variant.file_size) - n_bytesRead = 0; /* Past end of file */ + if (chunk_start > in->variant.file_variant.file_size) + n_bytes_read = 0; /* Past end of file */ else - n_bytesRead = in->variant.file_variant.file_size - chunkStart; + n_bytes_read = + in->variant.file_variant.file_size - + chunk_start; - if (n_bytesRead > dev->data_bytes_per_chunk) - n_bytesRead = dev->data_bytes_per_chunk; + if (n_bytes_read > dev->data_bytes_per_chunk) + n_bytes_read = dev->data_bytes_per_chunk; - nToWriteBack = - (n_bytesRead > - (start + n)) ? n_bytesRead : (start + n); + n_writeback = + (n_bytes_read > + (start + n)) ? n_bytes_read : (start + n); - if (nToWriteBack < 0 || nToWriteBack > dev->data_bytes_per_chunk) - YBUG(); + if (n_writeback < 0 || + n_writeback > dev->data_bytes_per_chunk) + BUG(); } else { - nToCopy = dev->data_bytes_per_chunk - start; - nToWriteBack = dev->data_bytes_per_chunk; + n_copy = dev->data_bytes_per_chunk - start; + n_writeback = 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 (n_copy != dev->data_bytes_per_chunk || + !dev->param.cache_bypass_aligned || + dev->param.inband_tags) { + /* An incomplete start or end chunk (or maybe both + * start and end chunk), or we're using inband tags, + * or we're forcing writes through the cache, + * 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 */ + struct yaffs_cache *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)) { + 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); + 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->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; + cache = NULL; } if (cache) { yaffs_use_cache(dev, cache, 1); cache->locked = 1; - memcpy(&cache->data[start], buffer, - nToCopy); - + n_copy); cache->locked = 0; - cache->n_bytes = nToWriteBack; + cache->n_bytes = n_writeback; - if (write_trhrough) { - chunkWritten = + if (write_through) { + chunk_written = yaffs_wr_data_obj (cache->object, cache->chunk_id, - cache->data, cache->n_bytes, - 1); + cache->data, + cache->n_bytes, 1); cache->dirty = 0; } - } else { - chunkWritten = -1; /* fail the write */ + chunk_written = -1; /* fail 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. + /* An incomplete start or end chunk (or maybe + * both start and end chunk). Read into the + * local buffer then copy over and write back. */ - __u8 *localBuffer = - yaffs_get_temp_buffer(dev, __LINE__); + u8 *local_buffer = yaffs_get_temp_buffer(dev); - yaffs_rd_data_obj(in, chunk, - localBuffer); + yaffs_rd_data_obj(in, chunk, local_buffer); + memcpy(&local_buffer[start], buffer, n_copy); - - - memcpy(&localBuffer[start], buffer, nToCopy); - - chunkWritten = + chunk_written = yaffs_wr_data_obj(in, chunk, - localBuffer, - nToWriteBack, - 0); - - yaffs_release_temp_buffer(dev, localBuffer, - __LINE__); + local_buffer, + n_writeback, 0); + yaffs_release_temp_buffer(dev, local_buffer); } - } else { - /* A full chunk. Write directly from the supplied buffer. */ - + /* A full chunk. Write directly from the buffer. */ - - chunkWritten = + chunk_written = yaffs_wr_data_obj(in, chunk, buffer, - dev->data_bytes_per_chunk, - 0); + dev->data_bytes_per_chunk, 0); - /* Since we've overwritten the cached data, we better invalidate it. */ + /* Since we've overwritten the cached data, + * we better invalidate it. */ yaffs_invalidate_chunk_cache(in, chunk); } - if (chunkWritten >= 0) { - n -= nToCopy; - offset += nToCopy; - buffer += nToCopy; - nDone += nToCopy; + if (chunk_written >= 0) { + n -= n_copy; + offset += n_copy; + buffer += n_copy; + n_done += n_copy; } - } /* Update file object */ - if ((startOfWrite + nDone) > in->variant.file_variant.file_size) - in->variant.file_variant.file_size = (startOfWrite + nDone); + if ((start_write + n_done) > in->variant.file_variant.file_size) + in->variant.file_variant.file_size = (start_write + n_done); in->dirty = 1; - - return nDone; + return n_done; } -int yaffs_wr_file(yaffs_obj_t *in, const __u8 *buffer, loff_t offset, - int n_bytes, int write_trhrough) +int yaffs_wr_file(struct yaffs_obj *in, const u8 *buffer, loff_t offset, + int n_bytes, int write_through) { - yaffs2_handle_hole(in,offset); - return yaffs_do_file_wr(in,buffer,offset,n_bytes,write_trhrough); + yaffs2_handle_hole(in, offset); + return yaffs_do_file_wr(in, buffer, offset, n_bytes, write_through); } - - /* ---------------------- File resizing stuff ------------------ */ -static void yaffs_prune_chunks(yaffs_obj_t *in, int new_size) +static void yaffs_prune_chunks(struct yaffs_obj *in, loff_t new_size) { - yaffs_dev_t *dev = in->my_dev; - int oldFileSize = in->variant.file_variant.file_size; - - 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; + struct yaffs_dev *dev = in->my_dev; + loff_t old_size = in->variant.file_variant.file_size; int i; int chunk_id; + u32 dummy; + int last_del; + int start_del; + + if (old_size > 0) + yaffs_addr_to_chunk(dev, old_size - 1, &last_del, &dummy); + else + last_del = 0; + + yaffs_addr_to_chunk(dev, new_size + dev->data_bytes_per_chunk - 1, + &start_del, &dummy); + last_del++; + start_del++; /* 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--) { + for (i = last_del; i >= start_del; 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__); - } + + if (chunk_id < 1) + continue; + + if (chunk_id < + (dev->internal_start_block * dev->param.chunks_per_block) || + chunk_id >= + ((dev->internal_end_block + 1) * + dev->param.chunks_per_block)) { + yaffs_trace(YAFFS_TRACE_ALWAYS, + "Found daft chunk_id %d for %d", + chunk_id, i); + } else { + in->n_data_chunks--; + yaffs_chunk_del(dev, chunk_id, 1, __LINE__); } } - } - -void yaffs_resize_file_down( yaffs_obj_t *obj, loff_t new_size) +void yaffs_resize_file_down(struct yaffs_obj *obj, loff_t new_size) { - int newFullChunks; - __u32 new_sizeOfPartialChunk; - yaffs_dev_t *dev = obj->my_dev; + int new_full; + u32 new_partial; + struct yaffs_dev *dev = obj->my_dev; - yaffs_addr_to_chunk(dev, new_size, &newFullChunks, &new_sizeOfPartialChunk); + yaffs_addr_to_chunk(dev, new_size, &new_full, &new_partial); yaffs_prune_chunks(obj, new_size); - if (new_sizeOfPartialChunk != 0) { - int lastChunk = 1 + newFullChunks; - __u8 *localBuffer = yaffs_get_temp_buffer(dev, __LINE__); + if (new_partial != 0) { + int last_chunk = 1 + new_full; + u8 *local_buffer = yaffs_get_temp_buffer(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); + /* Rewrite the last chunk with its new size and zero pad */ + yaffs_rd_data_obj(obj, last_chunk, local_buffer); + memset(local_buffer + new_partial, 0, + dev->data_bytes_per_chunk - new_partial); - yaffs_wr_data_obj(obj, lastChunk, localBuffer, - new_sizeOfPartialChunk, 1); + yaffs_wr_data_obj(obj, last_chunk, local_buffer, + new_partial, 1); - yaffs_release_temp_buffer(dev, localBuffer, __LINE__); + yaffs_release_temp_buffer(dev, local_buffer); } obj->variant.file_variant.file_size = new_size; @@ -3785,30 +3760,29 @@ void yaffs_resize_file_down( yaffs_obj_t *obj, loff_t new_size) yaffs_prune_tree(dev, &obj->variant.file_variant); } - -int yaffs_resize_file(yaffs_obj_t *in, loff_t new_size) +int yaffs_resize_file(struct yaffs_obj *in, loff_t new_size) { - yaffs_dev_t *dev = in->my_dev; - int oldFileSize = in->variant.file_variant.file_size; + struct yaffs_dev *dev = in->my_dev; + loff_t old_size = in->variant.file_variant.file_size; yaffs_flush_file_cache(in); yaffs_invalidate_whole_cache(in); - yaffs_check_gc(dev,0); + yaffs_check_gc(dev, 0); if (in->variant_type != YAFFS_OBJECT_TYPE_FILE) return YAFFS_FAIL; - if (new_size == oldFileSize) + if (new_size == old_size) return YAFFS_OK; - - if(new_size > oldFileSize){ - yaffs2_handle_hole(in,new_size); + + if (new_size > old_size) { + yaffs2_handle_hole(in, new_size); in->variant.file_variant.file_size = new_size; } else { - /* new_size < oldFileSize */ + /* new_size < old_size */ 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 @@ -3821,121 +3795,65 @@ int yaffs_resize_file(yaffs_obj_t *in, loff_t new_size) in->parent->obj_id != YAFFS_OBJECTID_DELETED) yaffs_update_oh(in, NULL, 0, 0, 0, NULL); - return YAFFS_OK; } -loff_t yaffs_get_file_size(yaffs_obj_t *obj) -{ - YCHAR *alias = NULL; - obj = yaffs_get_equivalent_obj(obj); - - 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; - } -} - - - -int yaffs_flush_file(yaffs_obj_t *in, int update_time, int data_sync) +int yaffs_flush_file(struct yaffs_obj *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 - - in->yst_mtime = Y_CURRENT_TIME; + if (!in->dirty) + return YAFFS_OK; -#endif - } + yaffs_flush_file_cache(in); - retVal = (yaffs_update_oh(in, NULL, 0, 0, 0, NULL) >= - 0) ? YAFFS_OK : YAFFS_FAIL; - } - } else { - retVal = YAFFS_OK; - } + if (data_sync) + return YAFFS_OK; - return retVal; + if (update_time) + yaffs_load_current_time(in, 0, 0); + return (yaffs_update_oh(in, NULL, 0, 0, 0, NULL) >= 0) ? + YAFFS_OK : YAFFS_FAIL; } -static int yaffs_generic_obj_del(yaffs_obj_t *in) -{ - - /* First off, invalidate the file's data in the cache, without flushing. */ - yaffs_invalidate_whole_cache(in); - - 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); - - } - - 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; - -} /* 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) +static int yaffs_unlink_file_if_needed(struct yaffs_obj *in) { - - int retVal; - int immediateDeletion = 0; - yaffs_dev_t *dev = in->my_dev; + int ret_val; + int del_now = 0; + struct yaffs_dev *dev = in->my_dev; if (!in->my_inode) - immediateDeletion = 1; + del_now = 1; - if (immediateDeletion) { - retVal = + if (del_now) { + ret_val = 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)); + _Y("deleted"), 0, 0); + yaffs_trace(YAFFS_TRACE_TRACING, + "yaffs: immediate deletion of file %d", + 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 = + ret_val = yaffs_change_obj_name(in, in->my_dev->unlinked_dir, - _Y("unlinked"), 0, 0); + _Y("unlinked"), 0, 0); } - - - return retVal; + return ret_val; } -int yaffs_del_file(yaffs_obj_t *in) +static int yaffs_del_file(struct yaffs_obj *in) { - int retVal = YAFFS_OK; - int deleted; /* Need to cache value on stack if in is freed */ - yaffs_dev_t *dev = in->my_dev; + int ret_val = YAFFS_OK; + int deleted; /* Need to cache value on stack if in is freed */ + struct yaffs_dev *dev = in->my_dev; if (dev->param.disable_soft_del || dev->param.is_yaffs2) yaffs_resize_file(in, 0); @@ -3945,11 +3863,11 @@ int yaffs_del_file(yaffs_obj_t *in) * That won't be the case if it has been resized to zero. */ if (!in->unlinked) - retVal = yaffs_unlink_file_if_needed(in); + ret_val = yaffs_unlink_file_if_needed(in); deleted = in->deleted; - if (retVal == YAFFS_OK && in->unlinked && !in->deleted) { + if (ret_val == YAFFS_OK && in->unlinked && !in->deleted) { in->deleted = 1; deleted = 1; in->my_dev->n_deleted_files++; @@ -3966,13 +3884,14 @@ int yaffs_del_file(yaffs_obj_t *in) } } -static int yaffs_is_non_empty_dir(yaffs_obj_t *obj) +int yaffs_is_non_empty_dir(struct yaffs_obj *obj) { - return (obj->variant_type == YAFFS_OBJECT_TYPE_DIRECTORY) && - !(ylist_empty(&obj->variant.dir_variant.children)); + return (obj && + obj->variant_type == YAFFS_OBJECT_TYPE_DIRECTORY) && + !(list_empty(&obj->variant.dir_variant.children)); } -static int yaffs_del_dir(yaffs_obj_t *obj) +static int yaffs_del_dir(struct yaffs_obj *obj) { /* First check that the directory is empty. */ if (yaffs_is_non_empty_dir(obj)) @@ -3981,69 +3900,71 @@ static int yaffs_del_dir(yaffs_obj_t *obj) return yaffs_generic_obj_del(obj); } -static int yaffs_del_symlink(yaffs_obj_t *in) +static int yaffs_del_symlink(struct yaffs_obj *in) { - if(in->variant.symlink_variant.alias) - YFREE(in->variant.symlink_variant.alias); - in->variant.symlink_variant.alias=NULL; + kfree(in->variant.symlink_variant.alias); + in->variant.symlink_variant.alias = NULL; return yaffs_generic_obj_del(in); } -static int yaffs_del_link(yaffs_obj_t *in) +static int yaffs_del_link(struct yaffs_obj *in) { - /* remove this hardlink from the list assocaited with the equivalent + /* remove this hardlink from the list associated with the equivalent * object */ - ylist_del_init(&in->hard_links); + list_del_init(&in->hard_links); return yaffs_generic_obj_del(in); } -int yaffs_del_obj(yaffs_obj_t *obj) +int yaffs_del_obj(struct yaffs_obj *obj) { -int retVal = -1; + int ret_val = -1; + switch (obj->variant_type) { case YAFFS_OBJECT_TYPE_FILE: - retVal = yaffs_del_file(obj); + ret_val = 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); + if (!list_empty(&obj->variant.dir_variant.dirty)) { + yaffs_trace(YAFFS_TRACE_BACKGROUND, + "Remove object %d from dirty directories", + obj->obj_id); + list_del_init(&obj->variant.dir_variant.dirty); } return yaffs_del_dir(obj); break; case YAFFS_OBJECT_TYPE_SYMLINK: - retVal = yaffs_del_symlink(obj); + ret_val = yaffs_del_symlink(obj); break; case YAFFS_OBJECT_TYPE_HARDLINK: - retVal = yaffs_del_link(obj); + ret_val = yaffs_del_link(obj); break; case YAFFS_OBJECT_TYPE_SPECIAL: - retVal = yaffs_generic_obj_del(obj); + ret_val = yaffs_generic_obj_del(obj); break; case YAFFS_OBJECT_TYPE_UNKNOWN: - retVal = 0; + ret_val = 0; break; /* should not happen. */ } - - return retVal; + return ret_val; } -static int yaffs_unlink_worker(yaffs_obj_t *obj) +static int yaffs_unlink_worker(struct yaffs_obj *obj) { + int del_now = 0; - int immediateDeletion = 0; + if (!obj) + return YAFFS_FAIL; if (!obj->my_inode) - immediateDeletion = 1; + del_now = 1; - if(obj) - yaffs_update_parent(obj->parent); + 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)) { + } else if (!list_empty(&obj->hard_links)) { /* Curve ball: We're unlinking an object that has a hardlink. * * This problem arises because we are not strictly following @@ -4053,39 +3974,40 @@ static int yaffs_unlink_worker(yaffs_obj_t *obj) * 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) + * - Move it from its parent directory so that the rename works. * - Rename the object to the hardlink's name. * - Delete the hardlink */ - yaffs_obj_t *hl; - yaffs_obj_t *parent; - int retVal; + struct yaffs_obj *hl; + struct yaffs_obj *parent; + int ret_val; YCHAR name[YAFFS_MAX_NAME_LENGTH + 1]; - hl = ylist_entry(obj->hard_links.next, yaffs_obj_t, hard_links); + hl = list_entry(obj->hard_links.next, struct yaffs_obj, + hard_links); yaffs_get_obj_name(hl, name, YAFFS_MAX_NAME_LENGTH + 1); parent = hl->parent; - ylist_del_init(&hl->hard_links); + list_del_init(&hl->hard_links); - yaffs_add_obj_to_dir(obj->my_dev->unlinked_dir, hl); + yaffs_add_obj_to_dir(obj->my_dev->unlinked_dir, hl); - retVal = yaffs_change_obj_name(obj,parent, name, 0, 0); + ret_val = yaffs_change_obj_name(obj, parent, name, 0, 0); - if (retVal == YAFFS_OK) - retVal = yaffs_generic_obj_del(hl); + if (ret_val == YAFFS_OK) + ret_val = yaffs_generic_obj_del(hl); - return retVal; + return ret_val; - } else if (immediateDeletion) { + } else if (del_now) { 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); + list_del_init(&obj->variant.dir_variant.dirty); return yaffs_del_dir(obj); break; case YAFFS_OBJECT_TYPE_SYMLINK: @@ -4099,126 +4021,187 @@ static int yaffs_unlink_worker(yaffs_obj_t *obj) default: return YAFFS_FAIL; } - } else if(yaffs_is_non_empty_dir(obj)) + } else if (yaffs_is_non_empty_dir(obj)) { return YAFFS_FAIL; - else + } else { return yaffs_change_obj_name(obj, obj->my_dev->unlinked_dir, - _Y("unlinked"), 0, 0); + _Y("unlinked"), 0, 0); + } } - -static int yaffs_unlink_obj(yaffs_obj_t *obj) +static int yaffs_unlink_obj(struct yaffs_obj *obj) { - if (obj && obj->unlink_allowed) return yaffs_unlink_worker(obj); return YAFFS_FAIL; - } -int yaffs_unlinker(yaffs_obj_t *dir, const YCHAR *name) + +int yaffs_unlinker(struct yaffs_obj *dir, const YCHAR *name) { - yaffs_obj_t *obj; + struct yaffs_obj *obj; obj = yaffs_find_by_name(dir, name); return yaffs_unlink_obj(obj); } +/* Note: + * If old_name is NULL then we take old_dir as the object to be renamed. + */ +int yaffs_rename_obj(struct yaffs_obj *old_dir, const YCHAR *old_name, + struct yaffs_obj *new_dir, const YCHAR *new_name) +{ + struct yaffs_obj *obj = NULL; + struct yaffs_obj *existing_target = NULL; + int force = 0; + int result; + struct yaffs_dev *dev; + + if (!old_dir || old_dir->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) { + BUG(); + return YAFFS_FAIL; + } + if (!new_dir || new_dir->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) { + BUG(); + return YAFFS_FAIL; + } + + dev = old_dir->my_dev; + +#ifdef CONFIG_YAFFS_CASE_INSENSITIVE + /* Special case for case insemsitive systems. + * 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 && + old_name && new_name && + strcmp(old_name, new_name) == 0) + force = 1; +#endif + + if (strnlen(new_name, YAFFS_MAX_NAME_LENGTH + 1) > + YAFFS_MAX_NAME_LENGTH) + /* ENAMETOOLONG */ + return YAFFS_FAIL; + + if (old_name) + obj = yaffs_find_by_name(old_dir, old_name); + else{ + obj = old_dir; + old_dir = obj->parent; + } + + if (obj && obj->rename_allowed) { + /* Now handle an existing target, if there is one */ + existing_target = yaffs_find_by_name(new_dir, new_name); + if (yaffs_is_non_empty_dir(existing_target)) { + return YAFFS_FAIL; /* ENOTEMPTY */ + } else if (existing_target && existing_target != obj) { + /* Nuke the target first, using shadowing, + * but only if it isn't the same object. + * + * Note we must disable gc here otherwise it can mess + * up the shadowing. + * + */ + dev->gc_disable = 1; + yaffs_change_obj_name(obj, new_dir, new_name, force, + existing_target->obj_id); + existing_target->is_shadowed = 1; + yaffs_unlink_obj(existing_target); + 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 YAFFS_FAIL; +} + /*----------------------- Initialisation Scanning ---------------------- */ -void yaffs_handle_shadowed_obj(yaffs_dev_t *dev, int obj_id, - int backward_scanning) +void yaffs_handle_shadowed_obj(struct yaffs_dev *dev, int obj_id, + int backward_scanning) { - yaffs_obj_t *obj; + struct yaffs_obj *obj; - if (!backward_scanning) { - /* Handle YAFFS1 forward scanning case - * For YAFFS1 we always do the deletion - */ - - } else { + if (backward_scanning) { /* Handle YAFFS2 case (backward scanning) * If the shadowed object exists then ignore. */ obj = yaffs_find_by_number(dev, obj_id); - if(obj) + if (obj) return; } - /* Let's create it (if it does not exist) assuming it is a file so that it can do shrinking etc. + /* 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); + 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 */ - + obj->valid = 1; /* So that we don't read any other info. */ } - -void yaffs_link_fixup(yaffs_dev_t *dev, yaffs_obj_t *hard_list) +void yaffs_link_fixup(struct yaffs_dev *dev, struct list_head *hard_list) { - yaffs_obj_t *hl; - yaffs_obj_t *in; - - while (hard_list) { - hl = hard_list; - hard_list = (yaffs_obj_t *) (hard_list->hard_links.next); + struct list_head *lh; + struct list_head *save; + struct yaffs_obj *hl; + struct yaffs_obj *in; + list_for_each_safe(lh, save, hard_list) { + hl = list_entry(lh, struct yaffs_obj, hard_links); in = yaffs_find_by_number(dev, - hl->variant.hardlink_variant. - equiv_id); + hl->variant.hardlink_variant.equiv_id); if (in) { /* Add the hardlink pointers */ hl->variant.hardlink_variant.equiv_obj = in; - ylist_add(&hl->hard_links, &in->hard_links); + list_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); - + INIT_LIST_HEAD(&hl->hard_links); } } } - -static void yaffs_strip_deleted_objs(yaffs_dev_t *dev) +static void yaffs_strip_deleted_objs(struct yaffs_dev *dev) { /* - * Sort out state of unlinked and deleted objects after scanning. - */ - struct ylist_head *i; - struct ylist_head *n; - yaffs_obj_t *l; + * Sort out state of unlinked and deleted objects after scanning. + */ + struct list_head *i; + struct list_head *n; + struct yaffs_obj *l; if (dev->read_only) return; /* 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); - } + list_for_each_safe(i, n, + &dev->unlinked_dir->variant.dir_variant.children) { + l = list_entry(i, struct yaffs_obj, siblings); + yaffs_del_obj(l); } - 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); - } + list_for_each_safe(i, n, &dev->del_dir->variant.dir_variant.children) { + l = list_entry(i, struct yaffs_obj, siblings); + yaffs_del_obj(l); } - } /* @@ -4229,30 +4212,30 @@ static void yaffs_strip_deleted_objs(yaffs_dev_t *dev) * - Directly or indirectly under root. * * Note: - * This code assumes that we don't ever change the current relationships between - * directories: + * 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 + * lost-n-found->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. + * 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) + +static int yaffs_has_null_parent(struct yaffs_dev *dev, struct yaffs_obj *obj) { return (obj == dev->del_dir || - obj == dev->unlinked_dir|| - obj == dev->root_dir); + obj == dev->unlinked_dir || obj == dev->root_dir); } -static void yaffs_fix_hanging_objs(yaffs_dev_t *dev) +static void yaffs_fix_hanging_objs(struct yaffs_dev *dev) { - yaffs_obj_t *obj; - yaffs_obj_t *parent; + struct yaffs_obj *obj; + struct yaffs_obj *parent; int i; - struct ylist_head *lh; - struct ylist_head *n; - int depthLimit; + struct list_head *lh; + struct list_head *n; + int depth_limit; int hanging; if (dev->read_only) @@ -4263,375 +4246,137 @@ static void yaffs_fix_hanging_objs(yaffs_dev_t *dev) * 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; + for (i = 0; i < YAFFS_NOBJECT_BUCKETS; i++) { + list_for_each_safe(lh, n, &dev->obj_bucket[i].list) { + obj = list_entry(lh, struct yaffs_obj, 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; + depth_limit = 100; + + while (parent != dev->root_dir && + parent->parent && + parent->parent->variant_type == + YAFFS_OBJECT_TYPE_DIRECTORY && + depth_limit > 0) { + parent = parent->parent; + depth_limit--; } - else if(!parent || parent->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) + if (parent != dev->root_dir) 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; - - 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); - } + } + if (hanging) { + yaffs_trace(YAFFS_TRACE_SCAN, + "Hanging object %d moved to lost and found", + obj->obj_id); + yaffs_add_obj_to_dir(dev->lost_n_found, obj); } } } } - /* * 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; - - 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)); - - /* Need to use UnlinkObject since Delete would not handle - * hardlinked objects correctly. - */ - yaffs_unlink_obj(obj); - } - } - -} - -static void yaffs_empty_l_n_f(yaffs_dev_t *dev) +static void yaffs_del_dir_contents(struct yaffs_obj *dir) { - yaffs_del_dir_contents(dev->lost_n_found); -} - -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; - - dev = in->my_dev; - -#if 0 - T(YAFFS_TRACE_SCAN, (TSTR("details for object %d %s loaded" TENDSTR), - in->obj_id, - in->lazy_loaded ? "not yet" : "already")); -#endif + struct yaffs_obj *obj; + struct list_head *lh; + struct list_head *n; - if (in->lazy_loaded && in->hdr_chunk > 0) { - in->lazy_loaded = 0; - chunkData = yaffs_get_temp_buffer(dev, __LINE__); - - 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 - 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 (dir->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) + BUG(); -#endif - yaffs_set_obj_name_from_oh(in, oh); - - 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_release_temp_buffer(dev, chunkData, __LINE__); + list_for_each_safe(lh, n, &dir->variant.dir_variant.children) { + obj = list_entry(lh, struct yaffs_obj, siblings); + if (obj->variant_type == YAFFS_OBJECT_TYPE_DIRECTORY) + yaffs_del_dir_contents(obj); + yaffs_trace(YAFFS_TRACE_SCAN, + "Deleting lost_found object %d", + obj->obj_id); + yaffs_unlink_obj(obj); } } -/*------------------------------ Directory Functions ----------------------------- */ - -/* - *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; -#ifndef CONFIG_YAFFS_WINCE - - 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)); - } - - } else - yaffs_update_oh(obj, NULL, 0, 0, 0, NULL); -#endif -} - -void yaffs_update_dirty_dirs(yaffs_dev_t *dev) +static void yaffs_empty_l_n_f(struct yaffs_dev *dev) { - struct ylist_head *link; - yaffs_obj_t *obj; - yaffs_dir_s *dS; - yaffs_obj_variant *oV; - - T(YAFFS_TRACE_BACKGROUND, (TSTR("Update dirty directories" TENDSTR))); - - 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); - - T(YAFFS_TRACE_BACKGROUND, (TSTR("Update directory %d" TENDSTR), obj->obj_id)); - - if(obj->dirty) - yaffs_update_oh(obj, NULL, 0, 0, 0, NULL); - } -} - -static void yaffs_remove_obj_from_dir(yaffs_obj_t *obj) -{ - yaffs_dev_t *dev = obj->my_dev; - yaffs_obj_t *parent; - - yaffs_verify_obj_in_dir(obj); - parent = obj->parent; - - yaffs_verify_dir(parent); - - if (dev && dev->param.remove_obj_fn) - dev->param.remove_obj_fn(obj); - - - ylist_del_init(&obj->siblings); - obj->parent = NULL; - - yaffs_verify_dir(parent); + yaffs_del_dir_contents(dev->lost_n_found); } -void yaffs_add_obj_to_dir(yaffs_obj_t *directory, - yaffs_obj_t *obj) -{ - if (!directory) { - T(YAFFS_TRACE_ALWAYS, - (TSTR - ("tragedy: Trying to add an object to a null pointer directory" - TENDSTR))); - YBUG(); - return; - } - if (directory->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) { - T(YAFFS_TRACE_ALWAYS, - (TSTR - ("tragedy: Trying to add an object to a non-directory" - TENDSTR))); - YBUG(); - } - - if (obj->siblings.prev == NULL) { - /* Not initialised */ - YBUG(); - } - - - yaffs_verify_dir(directory); - yaffs_remove_obj_from_dir(obj); - - - /* Now add it */ - ylist_add(&obj->siblings, &directory->variant.dir_variant.children); - obj->parent = directory; - - if (directory == obj->my_dev->unlinked_dir - || directory == obj->my_dev->del_dir) { - obj->unlinked = 1; - obj->my_dev->n_unlinked_files++; - obj->rename_allowed = 0; - } - - yaffs_verify_dir(directory); - yaffs_verify_obj_in_dir(obj); -} - -yaffs_obj_t *yaffs_find_by_name(yaffs_obj_t *directory, +struct yaffs_obj *yaffs_find_by_name(struct yaffs_obj *directory, const YCHAR *name) { int sum; - - struct ylist_head *i; + struct list_head *i; YCHAR buffer[YAFFS_MAX_NAME_LENGTH + 1]; - - yaffs_obj_t *l; + struct yaffs_obj *l; if (!name) return NULL; if (!directory) { - T(YAFFS_TRACE_ALWAYS, - (TSTR - ("tragedy: yaffs_find_by_name: null pointer directory" - TENDSTR))); - YBUG(); + yaffs_trace(YAFFS_TRACE_ALWAYS, + "tragedy: yaffs_find_by_name: null pointer directory" + ); + BUG(); return NULL; } if (directory->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) { - T(YAFFS_TRACE_ALWAYS, - (TSTR - ("tragedy: yaffs_find_by_name: non-directory" TENDSTR))); - YBUG(); + yaffs_trace(YAFFS_TRACE_ALWAYS, + "tragedy: yaffs_find_by_name: non-directory" + ); + BUG(); } sum = yaffs_calc_name_sum(name); - ylist_for_each(i, &directory->variant.dir_variant.children) { - if (i) { - l = ylist_entry(i, yaffs_obj_t, siblings); + list_for_each(i, &directory->variant.dir_variant.children) { + l = list_entry(i, struct yaffs_obj, siblings); - if (l->parent != directory) - YBUG(); + if (l->parent != directory) + BUG(); - yaffs_check_obj_details_loaded(l); + yaffs_check_obj_details_loaded(l); - /* Special case for lost-n-found */ - if (l->obj_id == YAFFS_OBJECTID_LOSTNFOUND) { - if (yaffs_strcmp(name, YAFFS_LOSTNFOUND_NAME) == 0) - return l; - } else if (yaffs_sum_cmp(l->sum, sum) || l->hdr_chunk <= 0) { - /* LostnFound chunk called Objxxx - * Do a real check - */ - yaffs_get_obj_name(l, buffer, - YAFFS_MAX_NAME_LENGTH + 1); - if (yaffs_strncmp(name, buffer, YAFFS_MAX_NAME_LENGTH) == 0) - return l; - } + /* Special case for lost-n-found */ + if (l->obj_id == YAFFS_OBJECTID_LOSTNFOUND) { + if (!strcmp(name, YAFFS_LOSTNFOUND_NAME)) + return l; + } else if (l->sum == sum || l->hdr_chunk <= 0) { + /* LostnFound chunk called Objxxx + * Do a real check + */ + yaffs_get_obj_name(l, buffer, + YAFFS_MAX_NAME_LENGTH + 1); + if (!strncmp(name, buffer, YAFFS_MAX_NAME_LENGTH)) + return l; } } - return NULL; } - -#if 0 -int yaffs_ApplyToDirectoryChildren(yaffs_obj_t *the_dir, - int (*fn) (yaffs_obj_t *)) -{ - struct ylist_head *i; - yaffs_obj_t *l; - - if (!the_dir) { - T(YAFFS_TRACE_ALWAYS, - (TSTR - ("tragedy: yaffs_find_by_name: null pointer directory" - TENDSTR))); - YBUG(); - return YAFFS_FAIL; - } - if (the_dir->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) { - T(YAFFS_TRACE_ALWAYS, - (TSTR - ("tragedy: yaffs_find_by_name: non-directory" TENDSTR))); - YBUG(); - return YAFFS_FAIL; - } - - ylist_for_each(i, &the_dir->variant.dir_variant.children) { - if (i) { - l = ylist_entry(i, yaffs_obj_t, siblings); - if (l && !fn(l)) - return YAFFS_FAIL; - } - } - - return YAFFS_OK; - -} -#endif - /* GetEquivalentObject dereferences any hard links to get to the * actual object. */ -yaffs_obj_t *yaffs_get_equivalent_obj(yaffs_obj_t *obj) +struct yaffs_obj *yaffs_get_equivalent_obj(struct yaffs_obj *obj) { if (obj && obj->variant_type == YAFFS_OBJECT_TYPE_HARDLINK) { - /* We want the object id of the equivalent object, not this one */ obj = obj->variant.hardlink_variant.equiv_obj; yaffs_check_obj_details_loaded(obj); } @@ -4651,173 +4396,106 @@ yaffs_obj_t *yaffs_get_equivalent_obj(yaffs_obj_t *obj) * 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 + * - 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]. */ -static void yaffs_fix_null_name(yaffs_obj_t * obj,YCHAR * name, int buffer_size) +static void yaffs_fix_null_name(struct yaffs_obj *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]; + if (strnlen(name, YAFFS_MAX_NAME_LENGTH) == 0) { + YCHAR local_name[20]; + YCHAR num_string[20]; + YCHAR *x = &num_string[19]; unsigned v = obj->obj_id; - numString[19] = 0; - while(v>0){ + num_string[19] = 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, 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); - } + strcpy(local_name, YAFFS_LOSTNFOUND_PREFIX); + strcat(local_name, x); + strncpy(name, local_name, buffer_size - 1); } - 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) +int yaffs_get_obj_name(struct yaffs_obj *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->short_name[0]) { - yaffs_strcpy(name, obj->short_name); - } -#endif - else if(obj->hdr_chunk > 0) { + strncpy(name, YAFFS_LOSTNFOUND_NAME, buffer_size - 1); + } else if (obj->short_name[0]) { + strcpy(name, obj->short_name); + } else if (obj->hdr_chunk > 0) { int result; - __u8 *buffer = yaffs_get_temp_buffer(obj->my_dev, __LINE__); + u8 *buffer = yaffs_get_temp_buffer(obj->my_dev); - yaffs_obj_header *oh = (yaffs_obj_header *) buffer; + struct yaffs_obj_hdr *oh = (struct yaffs_obj_hdr *)buffer; memset(buffer, 0, obj->my_dev->data_bytes_per_chunk); if (obj->hdr_chunk > 0) { result = yaffs_rd_chunk_tags_nand(obj->my_dev, - obj->hdr_chunk, buffer, - NULL); + obj->hdr_chunk, + buffer, NULL); } - yaffs_load_name_from_oh(obj->my_dev,name,oh->name,buffer_size); + yaffs_load_name_from_oh(obj->my_dev, name, oh->name, + buffer_size); - yaffs_release_temp_buffer(obj->my_dev, buffer, __LINE__); + yaffs_release_temp_buffer(obj->my_dev, buffer); } - yaffs_fix_null_name(obj,name,buffer_size); + yaffs_fix_null_name(obj, name, buffer_size); - return yaffs_strnlen(name,YAFFS_MAX_NAME_LENGTH); + return strnlen(name, YAFFS_MAX_NAME_LENGTH); } - -int yaffs_get_obj_length(yaffs_obj_t *obj) +loff_t yaffs_get_obj_length(struct yaffs_obj *obj) { /* Dereference any hard linking */ obj = yaffs_get_equivalent_obj(obj); 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) + 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); + return strnlen(obj->variant.symlink_variant.alias, + YAFFS_MAX_ALIAS_LENGTH); } else { /* Only a directory should drop through to here */ return obj->my_dev->data_bytes_per_chunk; } } -int yaffs_get_obj_link_count(yaffs_obj_t *obj) +int yaffs_get_obj_link_count(struct yaffs_obj *obj) { int count = 0; - struct ylist_head *i; + struct list_head *i; if (!obj->unlinked) - count++; /* the object itself */ + count++; /* the object itself */ - ylist_for_each(i, &obj->hard_links) - count++; /* add the hard links; */ + list_for_each(i, &obj->hard_links) + count++; /* add the hard links; */ return count; } -int yaffs_get_obj_inode(yaffs_obj_t *obj) +int yaffs_get_obj_inode(struct yaffs_obj *obj) { obj = yaffs_get_equivalent_obj(obj); return obj->obj_id; } -unsigned yaffs_get_obj_type(yaffs_obj_t *obj) +unsigned yaffs_get_obj_type(struct yaffs_obj *obj) { obj = yaffs_get_equivalent_obj(obj); @@ -4843,13 +4521,15 @@ unsigned yaffs_get_obj_type(yaffs_obj_t *obj) return DT_BLK; if (S_ISSOCK(obj->yst_mode)) return DT_SOCK; + return DT_REG; + break; default: return DT_REG; break; } } -YCHAR *yaffs_get_symlink_alias(yaffs_obj_t *obj) +YCHAR *yaffs_get_symlink_alias(struct yaffs_obj *obj) { obj = yaffs_get_equivalent_obj(obj); if (obj->variant_type == YAFFS_OBJECT_TYPE_SYMLINK) @@ -4858,276 +4538,82 @@ YCHAR *yaffs_get_symlink_alias(yaffs_obj_t *obj) return yaffs_clone_str(_Y("")); } -#ifndef CONFIG_YAFFS_WINCE - -int yaffs_set_attribs(yaffs_obj_t *obj, struct iattr *attr) -{ - unsigned int valid = attr->ia_valid; - - if (valid & ATTR_MODE) - obj->yst_mode = attr->ia_mode; - if (valid & ATTR_UID) - obj->yst_uid = attr->ia_uid; - if (valid & ATTR_GID) - obj->yst_gid = attr->ia_gid; - - if (valid & ATTR_ATIME) - obj->yst_atime = Y_TIME_CONVERT(attr->ia_atime); - if (valid & ATTR_CTIME) - obj->yst_ctime = Y_TIME_CONVERT(attr->ia_ctime); - if (valid & ATTR_MTIME) - obj->yst_mtime = Y_TIME_CONVERT(attr->ia_mtime); - - if (valid & ATTR_SIZE) - yaffs_resize_file(obj, attr->ia_size); - - yaffs_update_oh(obj, NULL, 1, 0, 0, NULL); - - return YAFFS_OK; - -} -int yaffs_get_attribs(yaffs_obj_t *obj, struct iattr *attr) -{ - unsigned int valid = 0; - - attr->ia_mode = obj->yst_mode; - valid |= ATTR_MODE; - attr->ia_uid = obj->yst_uid; - valid |= ATTR_UID; - attr->ia_gid = obj->yst_gid; - valid |= ATTR_GID; - - Y_TIME_CONVERT(attr->ia_atime) = obj->yst_atime; - valid |= ATTR_ATIME; - Y_TIME_CONVERT(attr->ia_ctime) = obj->yst_ctime; - valid |= ATTR_CTIME; - Y_TIME_CONVERT(attr->ia_mtime) = obj->yst_mtime; - valid |= ATTR_MTIME; - - attr->ia_size = yaffs_get_file_size(obj); - valid |= ATTR_SIZE; - - attr->ia_valid = valid; - - return YAFFS_OK; -} - -#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_dump_obj(yaffs_obj_t *obj) -{ - YCHAR name[257]; - - 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->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; -} -#endif - -/*---------------------------- Initialisation code -------------------------------------- */ +/*--------------------------- Initialisation code -------------------------- */ -static int yaffs_cehck_dev_fns(const yaffs_dev_t *dev) +static int yaffs_check_dev_fns(struct yaffs_dev *dev) { + struct yaffs_driver *drv = &dev->drv; + struct yaffs_tags_handler *tagger = &dev->tagger; /* Common functions, gotta have */ - if (!dev->param.erase_fn || !dev->param.initialise_flash_fn) + if (!drv->drv_read_chunk_fn || + !drv->drv_write_chunk_fn || + !drv->drv_erase_fn) return 0; -#ifdef CONFIG_YAFFS_YAFFS2 + if (dev->param.is_yaffs2 && + (!drv->drv_mark_bad_fn || !drv->drv_check_bad_fn)) + return 0; - /* Can use the "with tags" style interface for yaffs1 or yaffs2 */ - 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 + /* Install the default tags marshalling functions if needed. */ + yaffs_tags_compat_install(dev); + yaffs_tags_marshall_install(dev); - /* Can use the "spare" style interface for yaffs1 */ - 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; + /* Check we now have the marshalling functions required. */ + if (!tagger->write_chunk_tags_fn || + !tagger->read_chunk_tags_fn || + !tagger->query_block_fn || + !tagger->mark_bad_fn) + return 0; - return 0; /* bad */ + return 1; } - -static int yaffs_create_initial_dir(yaffs_dev_t *dev) +static int yaffs_create_initial_dir(struct yaffs_dev *dev) { - /* Initialise the unlinked, deleted, root and lost and found directories */ - - dev->lost_n_found = dev->root_dir = NULL; + /* Initialise the unlinked, deleted, root and lost+found directories */ + dev->lost_n_found = dev->root_dir = NULL; dev->unlinked_dir = dev->del_dir = NULL; - dev->unlinked_dir = yaffs_create_fake_dir(dev, YAFFS_OBJECTID_UNLINKED, S_IFDIR); - dev->del_dir = yaffs_create_fake_dir(dev, YAFFS_OBJECTID_DELETED, S_IFDIR); - dev->root_dir = yaffs_create_fake_dir(dev, YAFFS_OBJECTID_ROOT, - YAFFS_ROOT_MODE | S_IFDIR); + YAFFS_ROOT_MODE | S_IFDIR); dev->lost_n_found = yaffs_create_fake_dir(dev, YAFFS_OBJECTID_LOSTNFOUND, - YAFFS_LOSTNFOUND_MODE | S_IFDIR); + YAFFS_LOSTNFOUND_MODE | S_IFDIR); - if (dev->lost_n_found && dev->root_dir && dev->unlinked_dir && dev->del_dir) { + 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_guts_initialise(yaffs_dev_t *dev) +/* Low level init. + * Typically only used by yaffs_guts_initialise, but also used by the + * Low level yaffs driver tests. + */ + +int yaffs_guts_ll_init(struct yaffs_dev *dev) { - int init_failed = 0; - unsigned x; - int bits; - T(YAFFS_TRACE_TRACING, (TSTR("yaffs: yaffs_guts_initialise()" TENDSTR))); - /* Check stuff that must be set */ + yaffs_trace(YAFFS_TRACE_TRACING, "yaffs: yaffs_ll_init()"); if (!dev) { - T(YAFFS_TRACE_ALWAYS, (TSTR("yaffs: Need a device" TENDSTR))); + yaffs_trace(YAFFS_TRACE_ALWAYS, + "yaffs: Need a device" + ); return YAFFS_FAIL; } + if (dev->ll_init) + return YAFFS_OK; + dev->internal_start_block = dev->param.start_block; dev->internal_end_block = dev->param.end_block; dev->block_offset = 0; @@ -5145,57 +4631,88 @@ int yaffs_guts_initialise(yaffs_dev_t *dev) /* Check geometry parameters. */ - 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, inband_tags %d " - TENDSTR), dev->param.total_bytes_per_chunk, dev->param.is_yaffs2 ? "2" : "", dev->param.inband_tags)); - return YAFFS_FAIL; - } - - if (yaffs_init_nand(dev) != YAFFS_OK) { - T(YAFFS_TRACE_ALWAYS, - (TSTR("yaffs: InitialiseNAND failed" TENDSTR))); + 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 */ + yaffs_trace(YAFFS_TRACE_ALWAYS, + "NAND geometry problems: chunk size %d, type is yaffs%s, inband_tags %d ", + dev->param.total_bytes_per_chunk, + dev->param.is_yaffs2 ? "2" : "", + dev->param.inband_tags); return YAFFS_FAIL; } /* Sort out space for inband tags, if required */ if (dev->param.inband_tags) - dev->data_bytes_per_chunk = dev->param.total_bytes_per_chunk - sizeof(yaffs_PackedTags2TagsPart); + dev->data_bytes_per_chunk = + dev->param.total_bytes_per_chunk - + sizeof(struct yaffs_packed_tags2_tags_only); else dev->data_bytes_per_chunk = dev->param.total_bytes_per_chunk; /* Got the right mix of functions? */ - if (!yaffs_cehck_dev_fns(dev)) { + if (!yaffs_check_dev_fns(dev)) { /* Function missing */ - T(YAFFS_TRACE_ALWAYS, - (TSTR - ("yaffs: device function(s) missing or wrong\n" TENDSTR))); + yaffs_trace(YAFFS_TRACE_ALWAYS, + "device function(s) missing or wrong"); return YAFFS_FAIL; } - /* This is really a compilation check. */ - if (!yaffs_check_structures()) { - T(YAFFS_TRACE_ALWAYS, - (TSTR("yaffs_check_structures failed\n" TENDSTR))); + if (yaffs_init_nand(dev) != YAFFS_OK) { + yaffs_trace(YAFFS_TRACE_ALWAYS, "InitialiseNAND failed"); return YAFFS_FAIL; } - if (dev->is_mounted) { - T(YAFFS_TRACE_ALWAYS, - (TSTR("yaffs: device already mounted\n" TENDSTR))); + return YAFFS_OK; +} + + +int yaffs_format_dev(struct yaffs_dev *dev) +{ + int i; + enum yaffs_block_state state; + u32 dummy; + + if(yaffs_guts_ll_init(dev) != YAFFS_OK) + return YAFFS_FAIL; + + if(dev->is_mounted) return YAFFS_FAIL; + + for (i = dev->internal_start_block; i <= dev->internal_end_block; i++) { + yaffs_query_init_block_state(dev, i, &state, &dummy); + if (state != YAFFS_BLOCK_STATE_DEAD) + yaffs_erase_block(dev, i); } - /* Finished with most checks. One or two more checks happen later on too. */ + return YAFFS_OK; +} + + +int yaffs_guts_initialise(struct yaffs_dev *dev) +{ + int init_failed = 0; + unsigned x; + int bits; + + if(yaffs_guts_ll_init(dev) != YAFFS_OK) + return YAFFS_FAIL; + + if (dev->is_mounted) { + yaffs_trace(YAFFS_TRACE_ALWAYS, "device already mounted"); + return YAFFS_FAIL; + } dev->is_mounted = 1; @@ -5206,11 +4723,11 @@ int yaffs_guts_initialise(yaffs_dev_t *dev) */ x = dev->data_bytes_per_chunk; /* We always use dev->chunk_shift and dev->chunk_div */ - dev->chunk_shift = Shifts(x); + dev->chunk_shift = calc_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; + dev->chunk_mask = (1 << dev->chunk_shift) - 1; /* * Calculate chunk_grp_bits. @@ -5219,7 +4736,7 @@ int yaffs_guts_initialise(yaffs_dev_t *dev) x = dev->param.chunks_per_block * (dev->internal_end_block + 1); - bits = ShiftsGE(x); + bits = calc_shifts_ceiling(x); /* Set up tnode width if wide tnodes are enabled. */ if (!dev->param.wide_tnodes_disabled) { @@ -5230,10 +4747,11 @@ int yaffs_guts_initialise(yaffs_dev_t *dev) dev->tnode_width = 16; else dev->tnode_width = bits; - } else + } else { dev->tnode_width = 16; + } - dev->tnode_mask = (1<<dev->tnode_width)-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 @@ -5246,9 +4764,9 @@ int yaffs_guts_initialise(yaffs_dev_t *dev) else 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->tnode_size = (dev->tnode_width * YAFFS_NTNODES_LEVEL0) / 8; + if (dev->tnode_size < sizeof(struct yaffs_tnode)) + dev->tnode_size = sizeof(struct yaffs_tnode); dev->chunk_grp_size = 1 << dev->chunk_grp_bits; @@ -5257,13 +4775,12 @@ int yaffs_guts_initialise(yaffs_dev_t *dev) * the chunk group size > chunks per block. * This can be remedied by using larger "virtual blocks". */ - T(YAFFS_TRACE_ALWAYS, - (TSTR("yaffs: chunk group too large\n" TENDSTR))); + yaffs_trace(YAFFS_TRACE_ALWAYS, "chunk group too large"); return YAFFS_FAIL; } - /* OK, we've finished verifying the device, lets continue with initialisation */ + /* Finished verifying the device, continue with initialisation */ /* More device initialisation */ dev->all_gcs = 0; @@ -5282,9 +4799,10 @@ int yaffs_guts_initialise(yaffs_dev_t *dev) 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->gc_disable = 0; + dev->has_pending_prioritised_gc = 1; + /* Assume the worst for now, will get fixed on first GC */ + INIT_LIST_HEAD(&dev->dirty_dirs); dev->oldest_dirty_seq = 0; dev->oldest_dirty_block = 0; @@ -5295,28 +4813,28 @@ int yaffs_guts_initialise(yaffs_dev_t *dev) dev->cache = NULL; dev->gc_cleanup_list = NULL; - - if (!init_failed && - dev->param.n_caches > 0) { + if (!init_failed && dev->param.n_caches > 0) { int i; void *buf; - int cacheBytes = dev->param.n_caches * sizeof(yaffs_cache_t); + int cache_bytes = + dev->param.n_caches * sizeof(struct yaffs_cache); if (dev->param.n_caches > YAFFS_MAX_SHORT_OP_CACHES) dev->param.n_caches = YAFFS_MAX_SHORT_OP_CACHES; - dev->cache = YMALLOC(cacheBytes); + dev->cache = kmalloc(cache_bytes, GFP_NOFS); - buf = (__u8 *) dev->cache; + buf = (u8 *) dev->cache; if (dev->cache) - memset(dev->cache, 0, cacheBytes); + memset(dev->cache, 0, cache_bytes); 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); + dev->cache[i].data = buf = + kmalloc(dev->param.total_bytes_per_chunk, GFP_NOFS); } if (!buf) init_failed = 1; @@ -5327,7 +4845,9 @@ int yaffs_guts_initialise(yaffs_dev_t *dev) dev->cache_hits = 0; if (!init_failed) { - dev->gc_cleanup_list = YMALLOC(dev->param.chunks_per_block * sizeof(__u32)); + dev->gc_cleanup_list = + kmalloc(dev->param.chunks_per_block * sizeof(u32), + GFP_NOFS); if (!dev->gc_cleanup_list) init_failed = 1; } @@ -5343,18 +4863,24 @@ int yaffs_guts_initialise(yaffs_dev_t *dev) if (!init_failed && !yaffs_create_initial_dir(dev)) init_failed = 1; + if (!init_failed && dev->param.is_yaffs2 && + !dev->param.disable_summary && + !yaffs_summary_init(dev)) + init_failed = 1; if (!init_failed) { /* Now scan the flash. */ 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))); + yaffs_trace(YAFFS_TRACE_CHECKPOINT | + YAFFS_TRACE_MOUNT, + "yaffs: restored from checkpoint" + ); } else { - /* Clean up the mess caused by an aborted checkpoint load - * and scan backwards. + /* Clean up the mess caused by an aborted + * checkpoint load then scan backwards. */ yaffs_deinit_blocks(dev); @@ -5373,25 +4899,27 @@ int yaffs_guts_initialise(yaffs_dev_t *dev) yaffs_init_tnodes_and_objs(dev); - if (!init_failed && !yaffs_create_initial_dir(dev)) + if (!init_failed + && !yaffs_create_initial_dir(dev)) init_failed = 1; if (!init_failed && !yaffs2_scan_backwards(dev)) init_failed = 1; } - } else if (!yaffs1_scan(dev)) - init_failed = 1; + } else if (!yaffs1_scan(dev)) { + init_failed = 1; + } yaffs_strip_deleted_objs(dev); yaffs_fix_hanging_objs(dev); - if(dev->param.empty_lost_n_found) + 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_guts_initialise() aborted.\n" TENDSTR))); + yaffs_trace(YAFFS_TRACE_TRACING, + "yaffs: yaffs_guts_initialise() aborted."); yaffs_deinitialise(dev); return YAFFS_FAIL; @@ -5402,7 +4930,7 @@ int yaffs_guts_initialise(yaffs_dev_t *dev) dev->n_page_writes = 0; dev->n_erasures = 0; dev->n_gc_copies = 0; - dev->n_retired_writes = 0; + dev->n_retried_writes = 0; dev->n_retired_blocks = 0; @@ -5410,53 +4938,50 @@ int yaffs_guts_initialise(yaffs_dev_t *dev) yaffs_verify_blocks(dev); /* Clean up any aborted checkpoint data */ - if(!dev->is_checkpointed && dev->blocks_in_checkpt > 0) + if (!dev->is_checkpointed && dev->blocks_in_checkpt > 0) yaffs2_checkpt_invalidate(dev); - T(YAFFS_TRACE_TRACING, - (TSTR("yaffs: yaffs_guts_initialise() done.\n" TENDSTR))); + yaffs_trace(YAFFS_TRACE_TRACING, + "yaffs: yaffs_guts_initialise() done."); return YAFFS_OK; - } -void yaffs_deinitialise(yaffs_dev_t *dev) +void yaffs_deinitialise(struct yaffs_dev *dev) { if (dev->is_mounted) { int i; yaffs_deinit_blocks(dev); yaffs_deinit_tnodes_and_objs(dev); - if (dev->param.n_caches > 0 && - dev->cache) { + yaffs_summary_deinit(dev); + + if (dev->param.n_caches > 0 && dev->cache) { for (i = 0; i < dev->param.n_caches; i++) { - if (dev->cache[i].data) - YFREE(dev->cache[i].data); + kfree(dev->cache[i].data); dev->cache[i].data = NULL; } - YFREE(dev->cache); + kfree(dev->cache); dev->cache = NULL; } - YFREE(dev->gc_cleanup_list); + kfree(dev->gc_cleanup_list); for (i = 0; i < YAFFS_N_TEMP_BUFFERS; i++) - YFREE(dev->temp_buffer[i].buffer); + kfree(dev->temp_buffer[i].buffer); dev->is_mounted = 0; - if (dev->param.deinitialise_flash_fn) - dev->param.deinitialise_flash_fn(dev); + yaffs_deinit_nand(dev); } } -int yaffs_count_free_chunks(yaffs_dev_t *dev) +int yaffs_count_free_chunks(struct yaffs_dev *dev) { - int nFree=0; + int n_free = 0; int b; - - yaffs_block_info_t *blk; + struct yaffs_block_info *blk; blk = dev->block_info; for (b = dev->internal_start_block; b <= dev->internal_end_block; b++) { @@ -5465,7 +4990,7 @@ int yaffs_count_free_chunks(yaffs_dev_t *dev) case YAFFS_BLOCK_STATE_ALLOCATING: case YAFFS_BLOCK_STATE_COLLECTING: case YAFFS_BLOCK_STATE_FULL: - nFree += + n_free += (dev->param.chunks_per_block - blk->pages_in_use + blk->soft_del_pages); break; @@ -5474,71 +4999,84 @@ int yaffs_count_free_chunks(yaffs_dev_t *dev) } blk++; } - - return nFree; + return n_free; } -int yaffs_get_n_free_chunks(yaffs_dev_t *dev) +int yaffs_get_n_free_chunks(struct yaffs_dev *dev) { /* This is what we report to the outside world */ - - int nFree; - int nDirtyCacheChunks; - int blocksForCheckpoint; + int n_free; + int n_dirty_caches; + int blocks_for_checkpt; int i; -#if 1 - nFree = dev->n_free_chunks; -#else - nFree = yaffs_count_free_chunks(dev); -#endif - - nFree += dev->n_deleted_files; + n_free = dev->n_free_chunks; + n_free += dev->n_deleted_files; - /* Now count the number of dirty chunks in the cache and subtract those */ + /* Now count and subtract the number of dirty chunks in the cache. */ - for (nDirtyCacheChunks = 0, i = 0; i < dev->param.n_caches; i++) { + for (n_dirty_caches = 0, i = 0; i < dev->param.n_caches; i++) { if (dev->cache[i].dirty) - nDirtyCacheChunks++; + n_dirty_caches++; } - nFree -= nDirtyCacheChunks; + n_free -= n_dirty_caches; - nFree -= ((dev->param.n_reserved_blocks + 1) * dev->param.chunks_per_block); + n_free -= + ((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_calc_checkpt_blocks_required(dev); + /* Now figure checkpoint space and report that... */ + blocks_for_checkpt = yaffs_calc_checkpt_blocks_required(dev); - nFree -= (blocksForCheckpoint * dev->param.chunks_per_block); + n_free -= (blocks_for_checkpt * dev->param.chunks_per_block); + + if (n_free < 0) + n_free = 0; + + return n_free; +} - if (nFree < 0) - nFree = 0; - return nFree; +/* + * Marshalling functions to get loff_t file sizes into and out of + * object headers. + */ +void yaffs_oh_size_load(struct yaffs_obj_hdr *oh, loff_t fsize) +{ + oh->file_size_low = (fsize & 0xFFFFFFFF); + oh->file_size_high = ((fsize >> 32) & 0xFFFFFFFF); } +loff_t yaffs_oh_to_size(struct yaffs_obj_hdr *oh) +{ + loff_t retval; -/*---------------------------------------- YAFFS test code ----------------------*/ + if (sizeof(loff_t) >= 8 && ~(oh->file_size_high)) + retval = (((loff_t) oh->file_size_high) << 32) | + (((loff_t) oh->file_size_low) & 0xFFFFFFFF); + else + retval = (loff_t) oh->file_size_low; + + return retval; +} -#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, (int) sizeof(structure))); \ - return YAFFS_FAIL; \ - } \ - } while (0) -static int yaffs_check_structures(void) +void yaffs_count_blocks_by_state(struct yaffs_dev *dev, int bs[10]) { -/* 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"); */ + int i; + struct yaffs_block_info *bi; + int s; -#ifndef CONFIG_YAFFS_WINCE - yaffs_check_struct(yaffs_obj_header, 512, "yaffs_obj_header"); -#endif - return YAFFS_OK; + for(i = 0; i < 10; i++) + bs[i] = 0; + + for(i = dev->internal_start_block; i <= dev->internal_end_block; i++) { + bi = yaffs_get_block_info(dev, i); + s = bi->block_state; + if(s > YAFFS_BLOCK_STATE_DEAD || s < YAFFS_BLOCK_STATE_UNKNOWN) + bs[0]++; + else + bs[s]++; + } } diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_guts.h b/target/linux/generic/files/fs/yaffs2/yaffs_guts.h index 88075a7c8b..05785367cb 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) 2002-2010 Aleph One Ltd. + * Copyright (C) 2002-2011 Aleph One Ltd. * for Toby Churchill Ltd and Brightstar Engineering * * Created by Charles Manning <charles@aleph1.co.uk> @@ -17,41 +17,55 @@ #define __YAFFS_GUTS_H__ #include "yportenv.h" -#include "devextras.h" -#include "yaffs_list.h" #define YAFFS_OK 1 #define YAFFS_FAIL 0 /* Give us a Y=0x59, * Give us an A=0x41, - * Give us an FF=0xFF + * Give us an FF=0xff * Give us an S=0x53 * And what have we got... */ -#define YAFFS_MAGIC 0x5941FF53 +#define YAFFS_MAGIC 0x5941ff53 -#define YAFFS_NTNODES_LEVEL0 16 +/* + * Tnodes form a tree with the tnodes in "levels" + * Levels greater than 0 hold 8 slots which point to other tnodes. + * Those at level 0 hold 16 slots which point to chunks in NAND. + * + * A maximum level of 8 thust supports files of size up to: + * + * 2^(3*MAX_LEVEL+4) + * + * Thus a max level of 8 supports files with up to 2^^28 chunks which gives + * a maximum file size of around 512Gbytees with 2k chunks. + */ +#define YAFFS_NTNODES_LEVEL0 16 #define YAFFS_TNODES_LEVEL0_BITS 4 #define YAFFS_TNODES_LEVEL0_MASK 0xf -#define YAFFS_NTNODES_INTERNAL (YAFFS_NTNODES_LEVEL0 / 2) -#define YAFFS_TNODES_INTERNAL_BITS (YAFFS_TNODES_LEVEL0_BITS - 1) +#define YAFFS_NTNODES_INTERNAL (YAFFS_NTNODES_LEVEL0 / 2) +#define YAFFS_TNODES_INTERNAL_BITS (YAFFS_TNODES_LEVEL0_BITS - 1) #define YAFFS_TNODES_INTERNAL_MASK 0x7 -#define YAFFS_TNODES_MAX_LEVEL 6 +#define YAFFS_TNODES_MAX_LEVEL 8 +#define YAFFS_TNODES_MAX_BITS (YAFFS_TNODES_LEVEL0_BITS + \ + YAFFS_TNODES_INTERNAL_BITS * \ + YAFFS_TNODES_MAX_LEVEL) +#define YAFFS_MAX_CHUNK_ID ((1 << YAFFS_TNODES_MAX_BITS) - 1) + +#define YAFFS_MAX_FILE_SIZE_32 0x7fffffff -#ifndef CONFIG_YAFFS_NO_YAFFS1 +/* Constants for YAFFS1 mode */ #define YAFFS_BYTES_PER_SPARE 16 #define YAFFS_BYTES_PER_CHUNK 512 #define YAFFS_CHUNK_SIZE_SHIFT 9 #define YAFFS_CHUNKS_PER_BLOCK 32 -#define YAFFS_BYTES_PER_BLOCK (YAFFS_CHUNKS_PER_BLOCK*YAFFS_BYTES_PER_CHUNK) -#endif +#define YAFFS_BYTES_PER_BLOCK (YAFFS_CHUNKS_PER_BLOCK*YAFFS_BYTES_PER_CHUNK) -#define YAFFS_MIN_YAFFS2_CHUNK_SIZE 1024 +#define YAFFS_MIN_YAFFS2_CHUNK_SIZE 1024 #define YAFFS_MIN_YAFFS2_SPARE_SIZE 32 -#define YAFFS_MAX_CHUNK_ID 0x000FFFFF #define YAFFS_ALLOCATION_NOBJECTS 100 @@ -60,11 +74,12 @@ #define YAFFS_NOBJECT_BUCKETS 256 - #define YAFFS_OBJECT_SPACE 0x40000 -#define YAFFS_MAX_OBJECT_ID (YAFFS_OBJECT_SPACE -1) +#define YAFFS_MAX_OBJECT_ID (YAFFS_OBJECT_SPACE - 1) -#define YAFFS_CHECKPOINT_VERSION 4 +/* Binary data version stamps */ +#define YAFFS_SUMMARY_VERSION 1 +#define YAFFS_CHECKPOINT_VERSION 7 #ifdef CONFIG_YAFFS_UNICODE #define YAFFS_MAX_NAME_LENGTH 127 @@ -82,11 +97,12 @@ #define YAFFS_OBJECTID_UNLINKED 3 #define YAFFS_OBJECTID_DELETED 4 +/* Fake object Id for summary data */ +#define YAFFS_OBJECTID_SUMMARY 0x10 + /* 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_SEQUENCE_CHECKPOINT_DATA 0x21 #define YAFFS_MAX_SHORT_OP_CACHES 20 @@ -102,80 +118,74 @@ * The range is limited slightly to help distinguish bad numbers from good. * This also allows us to perhaps in the future use special numbers for * special purposes. - * EFFFFF00 allows the allocation of 8 blocks per second (~1Mbytes) for 15 years, + * EFFFFF00 allows the allocation of 8 blocks/second (~1Mbytes) for 15 years, * and is a larger number than the lifetime of a 2GB device. */ #define YAFFS_LOWEST_SEQUENCE_NUMBER 0x00001000 -#define YAFFS_HIGHEST_SEQUENCE_NUMBER 0xEFFFFF00 +#define YAFFS_HIGHEST_SEQUENCE_NUMBER 0xefffff00 /* Special sequence number for bad block that failed to be marked bad */ -#define YAFFS_SEQUENCE_BAD_BLOCK 0xFFFF0000 +#define YAFFS_SEQUENCE_BAD_BLOCK 0xffff0000 /* ChunkCache is used for short read/write operations.*/ -typedef struct { - struct yaffs_obj_s *object; +struct yaffs_cache { + struct yaffs_obj *object; int chunk_id; int last_use; int dirty; int n_bytes; /* Only valid if the cache is dirty */ int locked; /* Can't push out or flush while locked. */ - __u8 *data; -} yaffs_cache_t; - - + u8 *data; +}; -/* Tags structures in RAM - * NB This uses bitfield. Bitfields should not straddle a u32 boundary otherwise - * the structure size will get blown out. +/* yaffs1 tags structures in RAM + * NB This uses bitfield. Bitfields should not straddle a u32 boundary + * otherwise the structure size will get blown out. */ -#ifndef CONFIG_YAFFS_NO_YAFFS1 -typedef struct { +struct yaffs_tags { unsigned chunk_id:20; unsigned serial_number:2; unsigned n_bytes_lsb:10; unsigned obj_id:18; unsigned ecc:12; unsigned n_bytes_msb:2; -} yaffs_tags_t; +}; -typedef union { - yaffs_tags_t as_tags; - __u8 as_bytes[8]; -} yaffs_tags_union_t; +union yaffs_tags_union { + struct yaffs_tags as_tags; + u8 as_bytes[8]; +}; -#endif /* Stuff used for extended tags in YAFFS2 */ -typedef enum { +enum yaffs_ecc_result { YAFFS_ECC_RESULT_UNKNOWN, YAFFS_ECC_RESULT_NO_ERROR, YAFFS_ECC_RESULT_FIXED, YAFFS_ECC_RESULT_UNFIXED -} yaffs_ecc_result; +}; -typedef enum { +enum yaffs_obj_type { YAFFS_OBJECT_TYPE_UNKNOWN, YAFFS_OBJECT_TYPE_FILE, YAFFS_OBJECT_TYPE_SYMLINK, YAFFS_OBJECT_TYPE_DIRECTORY, YAFFS_OBJECT_TYPE_HARDLINK, YAFFS_OBJECT_TYPE_SPECIAL -} yaffs_obj_type; +}; #define YAFFS_OBJECT_TYPE_MAX YAFFS_OBJECT_TYPE_SPECIAL -typedef struct { - - unsigned validity1; +struct yaffs_ext_tags { 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 obj_id; /* If 0 this is not used */ + unsigned chunk_id; /* If 0 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_ecc_result ecc_result; + enum yaffs_ecc_result ecc_result; unsigned block_bad; /* YAFFS 1 stuff */ @@ -187,57 +197,57 @@ typedef struct { /* Extra info if this is an object header (YAFFS2 only) */ - unsigned extra_available; /* There is extra info available if this is not zero */ + unsigned extra_available; /* Extra info available if 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_obj_type extra_obj_type; /* What object type? */ - - unsigned extra_length; /* Length if it is a file */ - unsigned extra_equiv_id; /* Equivalent object Id if it is a hard link */ + unsigned extra_shadows; /* Does this shadow another object? */ - unsigned validty1; + enum yaffs_obj_type extra_obj_type; /* What object type? */ -} yaffs_ext_tags; + loff_t extra_file_size; /* Length if it is a file */ + unsigned extra_equiv_id; /* Equivalent object for a hard link */ +}; /* Spare structure for YAFFS1 */ -typedef struct { - __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 tb6; - __u8 tb7; - __u8 ecc2[3]; -} yaffs_spare; +struct yaffs_spare { + 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 tb6; + u8 tb7; + u8 ecc2[3]; +}; /*Special structure for passing through to mtd */ struct yaffs_nand_spare { - yaffs_spare spare; + struct yaffs_spare spare; int eccres1; int eccres2; }; /* Block data in RAM */ -typedef enum { +enum yaffs_block_state { 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. - * This state is only valid during yaffs_Scan. - * NB We tolerate empty because the pre-scanner might be incapable of deciding - * However, if this state is returned on a YAFFS2 device, then we expect a sequence number + /* Being scanned */ + + YAFFS_BLOCK_STATE_NEEDS_SCAN, + /* 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. + * This state is only valid during scanning. + * NB We tolerate empty because the pre-scanner might be incapable of + * deciding + * However, if this state is returned on a YAFFS2 device, + * then we expect a sequence number */ YAFFS_BLOCK_STATE_EMPTY, @@ -248,13 +258,14 @@ typedef enum { * 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. - * If a block is only partially allocated at mount it is treated as full. + * 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. + * If a block was only partially allocated when mounted we treat + * it as fully allocated. */ YAFFS_BLOCK_STATE_DIRTY, @@ -269,57 +280,54 @@ typedef enum { /* This block is being garbage collected */ YAFFS_BLOCK_STATE_DEAD - /* This block has failed and is not in use */ -} yaffs_block_state_t; + /* This block has failed and is not in use */ +}; #define YAFFS_NUMBER_OF_BLOCK_STATES (YAFFS_BLOCK_STATE_DEAD + 1) - -typedef struct { +struct yaffs_block_info { 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 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 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 has_shrink_hdr:1; /* This block has at least one shrink object header */ - __u32 seq_number; /* block sequence number for yaffs2 */ -#endif + 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*/ + u32 skip_erased_check:1;/* Skip the erased check on this block */ + u32 gc_prioritise:1; /* An ECC check or blank check has failed. + Block should be prioritised for GC */ + u32 chunk_error_strikes:3; /* How many times we've had ecc etc + failures on this block and tried to reuse it */ + u32 has_summary:1; /* The block has a summary */ + + u32 has_shrink_hdr:1; /* This block has at least one shrink header */ + u32 seq_number; /* block sequence number for yaffs2 */ -} yaffs_block_info_t; +}; /* -------------------------- Object structure -------------------------------*/ /* This is the object structure as stored on NAND */ -typedef struct { - yaffs_obj_type type; +struct yaffs_obj_hdr { + enum yaffs_obj_type type; /* Apply to everything */ int parent_obj_id; - __u16 sum_no_longer_used; /* checksum of name. No longer used */ + 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 */ + /* The following apply to all object types except for hard links */ + u32 yst_mode; /* protection */ -#ifdef CONFIG_YAFFS_WINCE - __u32 not_for_wince[5]; -#else - __u32 yst_uid; - __u32 yst_gid; - __u32 yst_atime; - __u32 yst_mtime; - __u32 yst_ctime; -#endif + u32 yst_uid; + u32 yst_gid; + u32 yst_atime; + u32 yst_mtime; + u32 yst_ctime; /* File size applies to files only */ - int file_size; + u32 file_size_low; /* Equivalent object id applies to hard links only. */ int equiv_id; @@ -327,37 +335,31 @@ typedef struct { /* Alias is for symlinks only. */ YCHAR alias[YAFFS_MAX_ALIAS_LENGTH + 1]; - __u32 yst_rdev; /* device stuff for block and char devices (major/min) */ + u32 yst_rdev; /* stuff for block and char devices (major/min) */ -#ifdef CONFIG_YAFFS_WINCE - __u32 win_ctime[2]; - __u32 win_atime[2]; - __u32 win_mtime[2]; -#else - __u32 room_to_grow[6]; + u32 win_ctime[2]; + u32 win_atime[2]; + u32 win_mtime[2]; -#endif - __u32 inband_shadowed_obj_id; - __u32 inband_is_shrink; + u32 inband_shadowed_obj_id; + u32 inband_is_shrink; - __u32 reserved[2]; - int shadows_obj; /* This object header shadows the specified object if > 0 */ + u32 file_size_high; + u32 reserved[1]; + int shadows_obj; /* This object header shadows the + specified object if > 0 */ - /* is_shrink applies to object headers written when we shrink the file (ie resize) */ - __u32 is_shrink; + /* is_shrink applies to object headers written when wemake a hole. */ + u32 is_shrink; -} yaffs_obj_header; +}; /*--------------------------- Tnode -------------------------- */ -union yaffs_tnode_union { - union yaffs_tnode_union *internal[YAFFS_NTNODES_INTERNAL]; - +struct yaffs_tnode { + struct yaffs_tnode *internal[YAFFS_NTNODES_INTERNAL]; }; -typedef union yaffs_tnode_union yaffs_tnode_t; - - /*------------------------ Object -----------------------------*/ /* An object can be one of: * - a directory (no data, has children links @@ -366,294 +368,310 @@ typedef union yaffs_tnode_union yaffs_tnode_t; * - a hard link */ -typedef struct { - __u32 file_size; - __u32 scanned_size; - __u32 shrink_size; +struct yaffs_file_var { + loff_t file_size; + loff_t scanned_size; + loff_t shrink_size; int top_level; - yaffs_tnode_t *top; -} yaffs_file_s; + struct yaffs_tnode *top; +}; -typedef struct { - struct ylist_head children; /* list of child links */ - struct ylist_head dirty; /* Entry for list of dirty directories */ -} yaffs_dir_s; +struct yaffs_dir_var { + struct list_head children; /* list of child links */ + struct list_head dirty; /* Entry for list of dirty directories */ +}; -typedef struct { +struct yaffs_symlink_var { YCHAR *alias; -} yaffs_symlink_t; - -typedef struct { - struct yaffs_obj_s *equiv_obj; - __u32 equiv_id; -} yaffs_hard_link_s; - -typedef union { - 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_obj_s { - __u8 deleted:1; /* This should only apply to unlinked files. */ - __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 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 +}; + +struct yaffs_hardlink_var { + struct yaffs_obj *equiv_obj; + u32 equiv_id; +}; + +union yaffs_obj_var { + struct yaffs_file_var file_variant; + struct yaffs_dir_var dir_variant; + struct yaffs_symlink_var symlink_variant; + struct yaffs_hardlink_var hardlink_variant; +}; + +struct yaffs_obj { + u8 deleted:1; /* This should only apply to unlinked files. */ + u8 soft_del:1; /* it has also been soft deleted */ + u8 unlinked:1; /* An unlinked file.*/ + u8 fake:1; /* A fake object has no presence on NAND. */ + u8 rename_allowed:1; /* Some objects cannot 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). + * is available + * ie. file data chunks encountered before + * the header. */ - __u8 lazy_loaded: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 defered_free:1; /* For Linux kernel. Object is removed from NAND, but is - * still in the inode cache. Free of object is defered. + u8 defered_free:1; /* Object is removed from NAND, but is + * still in the inode cache. + * Free of object is defered. * until the inode is released. */ - __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 being_created:1; /* This object is still being created + * so skip some verification 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 xattr_known:1; /* We know if this has object has xattribs + * or not. */ + u8 has_xattr:1; /* This object has xattribs. + * Only valid if xattr_known. */ - __u8 serial; /* serial number of chunk in NAND. Cached here */ - __u16 sum; /* sum of the name to speed searching */ + u8 serial; /* serial number of chunk in NAND.*/ + u16 sum; /* sum of the name to speed searching */ - struct yaffs_dev_s *my_dev; /* The device I'm on */ + struct yaffs_dev *my_dev; /* The device I'm on */ - struct ylist_head hash_link; /* list of objects in this hash bucket */ + struct list_head hash_link; /* list of objects in hash bucket */ - struct ylist_head hard_links; /* all the equivalent hard linked objects */ + struct list_head hard_links; /* hard linked object chain*/ /* directory structure stuff */ /* also used for linking up the free list */ - struct yaffs_obj_s *parent; - struct ylist_head siblings; + struct yaffs_obj *parent; + struct list_head siblings; /* Where's my object header in NAND? */ int hdr_chunk; - int n_data_chunks; /* Number of data chunks attached to the file. */ + int n_data_chunks; /* Number of data chunks for this file. */ - __u32 obj_id; /* the object id value */ + u32 obj_id; /* the object id value */ - __u32 yst_mode; + u32 yst_mode; -#ifdef CONFIG_YAFFS_SHORT_NAMES_IN_RAM YCHAR short_name[YAFFS_SHORT_NAME_LENGTH + 1]; -#endif #ifdef CONFIG_YAFFS_WINCE - __u32 win_ctime[2]; - __u32 win_mtime[2]; - __u32 win_atime[2]; + u32 win_ctime[2]; + u32 win_mtime[2]; + u32 win_atime[2]; #else - __u32 yst_uid; - __u32 yst_gid; - __u32 yst_atime; - __u32 yst_mtime; - __u32 yst_ctime; + u32 yst_uid; + u32 yst_gid; + u32 yst_atime; + u32 yst_mtime; + u32 yst_ctime; #endif - __u32 yst_rdev; + u32 yst_rdev; void *my_inode; - yaffs_obj_type variant_type; + enum yaffs_obj_type variant_type; - yaffs_obj_variant variant; + union yaffs_obj_var variant; }; -typedef struct yaffs_obj_s yaffs_obj_t; - -typedef struct { - struct ylist_head list; +struct yaffs_obj_bucket { + struct list_head list; int count; -} yaffs_obj_bucket; - +}; -/* yaffs_checkpt_obj_t holds the definition of an object as dumped +/* yaffs_checkpt_obj holds the definition of an object as dumped * by checkpointing. */ -typedef struct { +struct yaffs_checkpt_obj { int struct_type; - __u32 obj_id; - __u32 parent_id; + u32 obj_id; + u32 parent_id; int hdr_chunk; - yaffs_obj_type variant_type:3; - __u8 deleted:1; - __u8 soft_del:1; - __u8 unlinked:1; - __u8 fake:1; - __u8 rename_allowed:1; - __u8 unlink_allowed:1; - __u8 serial; - + enum yaffs_obj_type variant_type:3; + u8 deleted:1; + u8 soft_del:1; + u8 unlinked:1; + u8 fake:1; + u8 rename_allowed:1; + u8 unlink_allowed:1; + u8 serial; int n_data_chunks; - __u32 size_or_equiv_obj; -} yaffs_checkpt_obj_t; + loff_t size_or_equiv_obj; +}; /*--------------------- Temporary buffers ---------------- * - * These are chunk-sized working buffers. Each device has a few + * These are chunk-sized working buffers. Each device has a few. */ -typedef struct { - __u8 *buffer; - int line; /* track from whence this buffer was allocated */ - int max_line; -} yaffs_buffer_t; +struct yaffs_buffer { + u8 *buffer; + int in_use; +}; /*----------------- Device ---------------------------------*/ - -struct yaffs_param_s { +struct yaffs_param { const YCHAR *name; /* - * 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. - */ + * Entry parameters set up way early. Yaffs sets up the rest. + * The structure should be zeroed out before use so that unused + * and default 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 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 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 n_reserved_blocks; /* Tuneable so that we can reduce + * reserved blocks on NOR and RAM. */ - 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 n_caches; /* If <= 0, then short op caching is disabled, + * else the number of short op caches. */ - 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 cache_bypass_aligned; /* If non-zero then bypass the cache for + * aligned writes. + */ - int is_yaffs2; /* Use yaffs2 mode on this device */ + int use_nand_ecc; /* Flag to decide whether or not to use + * NAND driver ECC on data (yaffs1) */ + int tags_9bytes; /* Use 9 byte tags */ + int no_tags_ecc; /* Flag to decide whether or not to do ECC + * on packed tags (yaffs2) */ - int empty_lost_n_found; /* Auto-empty lost+found directory on mount */ + int is_yaffs2; /* Use yaffs2 mode on this device */ - int refresh_period; /* How often we should check to do a block refresh */ + int empty_lost_n_found; /* Auto-empty lost+found directory on mount */ + + int refresh_period; /* How often to check for a block refresh */ /* Checkpoint control. Can be set before or after initialisation */ - __u8 skip_checkpt_rd; - __u8 skip_checkpt_wr; + u8 skip_checkpt_rd; + u8 skip_checkpt_wr; int enable_xattr; /* Enable xattribs */ - /* NAND access functions (Must be set before calling YAFFS)*/ - - 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 (*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 max_objects; /* + * Set to limit the number of objects created. + * 0 = no limit. + */ /* 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. + * yaffs direct uses it to implement the faster readdir. + * Linux uses it to protect the directory during unlocking. */ - void (*remove_obj_fn)(struct yaffs_obj_s *obj); + void (*remove_obj_fn) (struct yaffs_obj *obj); /* Callback to mark the superblock dirty */ - void (*sb_dirty_fn)(struct yaffs_dev_s *dev); - + void (*sb_dirty_fn) (struct yaffs_dev *dev); + /* Callback to control garbage collection. */ - unsigned (*gc_control)(struct yaffs_dev_s *dev); + unsigned (*gc_control_fn) (struct yaffs_dev *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 */ + /* 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 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 */ + int always_check_erased; /* Force chunk erased check always on */ + + int disable_summary; + int disable_bad_block_marking; + }; -typedef struct yaffs_param_s yaffs_param_t; +struct yaffs_driver { + int (*drv_write_chunk_fn) (struct yaffs_dev *dev, int nand_chunk, + const u8 *data, int data_len, + const u8 *oob, int oob_len); + int (*drv_read_chunk_fn) (struct yaffs_dev *dev, int nand_chunk, + u8 *data, int data_len, + u8 *oob, int oob_len, + enum yaffs_ecc_result *ecc_result); + int (*drv_erase_fn) (struct yaffs_dev *dev, int block_no); + int (*drv_mark_bad_fn) (struct yaffs_dev *dev, int block_no); + int (*drv_check_bad_fn) (struct yaffs_dev *dev, int block_no); + int (*drv_initialise_fn) (struct yaffs_dev *dev); + int (*drv_deinitialise_fn) (struct yaffs_dev *dev); +}; + +struct yaffs_tags_handler { + int (*write_chunk_tags_fn) (struct yaffs_dev *dev, + int nand_chunk, const u8 *data, + const struct yaffs_ext_tags *tags); + int (*read_chunk_tags_fn) (struct yaffs_dev *dev, + int nand_chunk, u8 *data, + struct yaffs_ext_tags *tags); + + int (*query_block_fn) (struct yaffs_dev *dev, int block_no, + enum yaffs_block_state *state, + u32 *seq_number); + int (*mark_bad_fn) (struct yaffs_dev *dev, int block_no); +}; -struct yaffs_dev_s { - struct yaffs_param_s param; +struct yaffs_dev { + struct yaffs_param param; + struct yaffs_driver drv; + struct yaffs_tags_handler tagger; - /* Context storage. Holds extra OS specific data for this device */ + /* Context storage. Holds extra OS specific data for this device */ void *os_context; void *driver_context; - struct ylist_head dev_list; + struct list_head dev_list; + int ll_init; /* Runtime parameters. Set up by YAFFS. */ - int data_bytes_per_chunk; + int data_bytes_per_chunk; - /* 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 */ + /* 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 tnode_width; - __u32 tnode_mask; - __u32 tnode_size; + u32 tnode_width; + u32 tnode_mask; + u32 tnode_size; /* Stuff for figuring out file offset to chunk conversions */ - __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 */ - - + u32 chunk_shift; /* Shift value */ + u32 chunk_div; /* Divisor after shifting: 1 for 2^n sizes */ + u32 chunk_mask; /* Mask to use for power-of-2 case */ int is_mounted; int read_only; int is_checkpointed; - /* Stuff to support block offsetting to support start block zero */ int internal_start_block; int internal_end_block; int block_offset; int chunk_offset; - /* Runtime checkpointing stuff */ - int checkpt_page_seq; /* running sequence number of checkpoint pages */ + int checkpt_page_seq; /* running sequence number of checkpt pages */ int checkpt_byte_count; int checkpt_byte_offs; - __u8 *checkpt_buffer; + u8 *checkpt_buffer; int checkpt_open_write; int blocks_in_checkpt; int checkpt_cur_chunk; @@ -661,23 +679,24 @@ struct yaffs_dev_s { int checkpt_next_block; int *checkpt_block_list; int checkpt_max_blocks; - __u32 checkpt_sum; - __u32 checkpt_xor; + u32 checkpt_sum; + u32 checkpt_xor; - int checkpoint_blocks_required; /* 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_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 */ + struct yaffs_block_info *block_info; + u8 *chunk_bits; /* bitmap of chunks in use */ + unsigned block_info_alt:1; /* allocated using alternative alloc */ + unsigned chunk_bits_alt:1; /* allocated using alternative alloc */ int chunk_bit_stride; /* Number of bytes of chunk_bits per block. * Must be consistent with chunks_per_block. */ int n_erased_blocks; int alloc_block; /* Current block being allocated off */ - __u32 alloc_page; + u32 alloc_page; int alloc_block_finder; /* Used to search for next allocation block */ /* Object and Tnode memory management */ @@ -687,16 +706,17 @@ struct yaffs_dev_s { int n_hardlinks; - yaffs_obj_bucket obj_bucket[YAFFS_NOBJECT_BUCKETS]; - __u32 bucket_finder; + struct 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; + 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 has_pending_prioritised_gc; /* We think this device might + have pending prioritised gcs */ unsigned gc_disable; unsigned gc_block_finder; unsigned gc_dirtiest; @@ -705,265 +725,279 @@ struct yaffs_dev_s { unsigned gc_block; unsigned gc_chunk; unsigned gc_skip; + struct yaffs_summary_tags *gc_sum_tags; /* Special directories */ - yaffs_obj_t *root_dir; - yaffs_obj_t *lost_n_found; - - /* Buffer areas for storing data to recover from write failures TODO - * __u8 buffered_data[YAFFS_CHUNKS_PER_BLOCK][YAFFS_BYTES_PER_CHUNK]; - * yaffs_spare buffered_spare[YAFFS_CHUNKS_PER_BLOCK]; - */ + struct yaffs_obj *root_dir; + struct yaffs_obj *lost_n_found; int buffered_block; /* Which block is buffered here? */ int doing_buffered_block_rewrite; - yaffs_cache_t *cache; + struct yaffs_cache *cache; int cache_last_use; - /* Stuff for background deletion and unlinked files.*/ - 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. */ + /* Stuff for background deletion and unlinked files. */ + struct yaffs_obj *unlinked_dir; /* Directory where unlinked and deleted + files live. */ + struct yaffs_obj *del_dir; /* Directory where deleted objects are + sent to disappear. */ + struct yaffs_obj *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_buffer_t temp_buffer[YAFFS_N_TEMP_BUFFERS]; + struct yaffs_buffer 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 seq_number; /* Sequence number of currently allocating block */ + 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. */ + 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; + struct list_head dirty_dirs; /* List of dirty directories */ + + /* Summary */ + int chunks_per_summary; + struct yaffs_summary_tags *sum_tags; + + /* Statistics */ + u32 n_page_writes; + u32 n_page_reads; + u32 n_erasures; + u32 n_bad_markings; + 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_retried_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; + u32 tags_used; + u32 summary_used; }; -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 checkpt_start_block; - int checkpt_end_block; - int start_block; - int end_block; - int rfu[100]; -} yaffs_sb_header; - -/* The CheckpointDevice structure holds the device information that changes at runtime and - * must be preserved over unmount/mount cycles. +/* The CheckpointDevice structure holds the device information that changes + *at runtime and must be preserved over unmount/mount cycles. */ -typedef struct { +struct yaffs_checkpt_dev { int struct_type; int n_erased_blocks; int alloc_block; /* Current block being allocated off */ - __u32 alloc_page; + 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_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 seq_number; /* Sequence number of currently allocating block */ - -} yaffs_checkpt_dev_t; + unsigned seq_number; /* Sequence number of currently + * allocating block */ +}; -typedef struct { +struct yaffs_checkpt_validity { int struct_type; - __u32 magic; - __u32 version; - __u32 head; -} yaffs_checkpt_validty_t; - + u32 magic; + u32 version; + u32 head; +}; -struct yaffs_shadow_fixer_s { +struct yaffs_shadow_fixer { int obj_id; int shadowed_id; - struct yaffs_shadow_fixer_s *next; + struct yaffs_shadow_fixer *next; }; /* Structure for doing xattr modifications */ -typedef struct { - int set; /* If 0 then this is a deletion */ +struct yaffs_xattr_mod { + 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_guts_initialise(yaffs_dev_t *dev); -void yaffs_deinitialise(yaffs_dev_t *dev); - -int yaffs_get_n_free_chunks(yaffs_dev_t *dev); +int yaffs_guts_initialise(struct yaffs_dev *dev); +void yaffs_deinitialise(struct yaffs_dev *dev); -int yaffs_rename_obj(yaffs_obj_t *old_dir, const YCHAR *old_name, - yaffs_obj_t *new_dir, const YCHAR *new_name); +int yaffs_get_n_free_chunks(struct yaffs_dev *dev); -int yaffs_unlinker(yaffs_obj_t *dir, const YCHAR *name); -int yaffs_del_obj(yaffs_obj_t *obj); +int yaffs_rename_obj(struct yaffs_obj *old_dir, const YCHAR * old_name, + struct yaffs_obj *new_dir, const YCHAR * new_name); -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_unlinker(struct yaffs_obj *dir, const YCHAR * name); +int yaffs_del_obj(struct yaffs_obj *obj); -int yaffs_set_attribs(yaffs_obj_t *obj, struct iattr *attr); -int yaffs_get_attribs(yaffs_obj_t *obj, struct iattr *attr); +int yaffs_get_obj_name(struct yaffs_obj *obj, YCHAR * name, int buffer_size); +loff_t yaffs_get_obj_length(struct yaffs_obj *obj); +int yaffs_get_obj_inode(struct yaffs_obj *obj); +unsigned yaffs_get_obj_type(struct yaffs_obj *obj); +int yaffs_get_obj_link_count(struct yaffs_obj *obj); /* File operations */ -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); +int yaffs_file_rd(struct yaffs_obj *obj, u8 * buffer, loff_t offset, + int n_bytes); +int yaffs_wr_file(struct yaffs_obj *obj, const u8 * buffer, loff_t offset, + int n_bytes, int write_trhrough); +int yaffs_resize_file(struct yaffs_obj *obj, loff_t new_size); -yaffs_obj_t *yaffs_create_file(yaffs_obj_t *parent, const YCHAR *name, - __u32 mode, __u32 uid, __u32 gid); +struct yaffs_obj *yaffs_create_file(struct yaffs_obj *parent, + const YCHAR *name, u32 mode, u32 uid, + u32 gid); -int yaffs_flush_file(yaffs_obj_t *obj, int update_time, int data_sync); +int yaffs_flush_file(struct yaffs_obj *obj, int update_time, int data_sync); /* Flushing and checkpointing */ -void yaffs_flush_whole_cache(yaffs_dev_t *dev); +void yaffs_flush_whole_cache(struct yaffs_dev *dev); -int yaffs_checkpoint_save(yaffs_dev_t *dev); -int yaffs_checkpoint_restore(yaffs_dev_t *dev); +int yaffs_checkpoint_save(struct yaffs_dev *dev); +int yaffs_checkpoint_restore(struct yaffs_dev *dev); /* Directory operations */ -yaffs_obj_t *yaffs_create_dir(yaffs_obj_t *parent, const YCHAR *name, - __u32 mode, __u32 uid, __u32 gid); -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_obj_t *yaffs_find_by_number(yaffs_dev_t *dev, __u32 number); +struct yaffs_obj *yaffs_create_dir(struct yaffs_obj *parent, const YCHAR *name, + u32 mode, u32 uid, u32 gid); +struct yaffs_obj *yaffs_find_by_name(struct yaffs_obj *the_dir, + const YCHAR *name); +struct yaffs_obj *yaffs_find_by_number(struct yaffs_dev *dev, u32 number); /* Link operations */ -yaffs_obj_t *yaffs_link_obj(yaffs_obj_t *parent, const YCHAR *name, - yaffs_obj_t *equiv_obj); +struct yaffs_obj *yaffs_link_obj(struct yaffs_obj *parent, const YCHAR *name, + struct yaffs_obj *equiv_obj); -yaffs_obj_t *yaffs_get_equivalent_obj(yaffs_obj_t *obj); +struct yaffs_obj *yaffs_get_equivalent_obj(struct yaffs_obj *obj); /* Symlink operations */ -yaffs_obj_t *yaffs_create_symlink(yaffs_obj_t *parent, const YCHAR *name, - __u32 mode, __u32 uid, __u32 gid, - const YCHAR *alias); -YCHAR *yaffs_get_symlink_alias(yaffs_obj_t *obj); +struct yaffs_obj *yaffs_create_symlink(struct yaffs_obj *parent, + const YCHAR *name, u32 mode, u32 uid, + u32 gid, const YCHAR *alias); +YCHAR *yaffs_get_symlink_alias(struct yaffs_obj *obj); /* Special inodes (fifos, sockets and devices) */ -yaffs_obj_t *yaffs_create_special(yaffs_obj_t *parent, const YCHAR *name, - __u32 mode, __u32 uid, __u32 gid, __u32 rdev); - +struct yaffs_obj *yaffs_create_special(struct yaffs_obj *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); +int yaffs_set_xattrib(struct yaffs_obj *obj, const YCHAR *name, + const void *value, int size, int flags); +int yaffs_get_xattrib(struct yaffs_obj *obj, const YCHAR *name, void *value, + int size); +int yaffs_list_xattrib(struct yaffs_obj *obj, char *buffer, int size); +int yaffs_remove_xattrib(struct yaffs_obj *obj, const YCHAR *name); /* Special directories */ -yaffs_obj_t *yaffs_root(yaffs_dev_t *dev); -yaffs_obj_t *yaffs_lost_n_found(yaffs_dev_t *dev); +struct yaffs_obj *yaffs_root(struct yaffs_dev *dev); +struct yaffs_obj *yaffs_lost_n_found(struct yaffs_dev *dev); -#ifdef CONFIG_YAFFS_WINCE -/* CONFIG_YAFFS_WINCE special stuff */ -void yfsd_win_file_time_now(__u32 target[2]); -#endif - -void yaffs_handle_defered_free(yaffs_obj_t *obj); +void yaffs_handle_defered_free(struct yaffs_obj *obj); -void yaffs_update_dirty_dirs(yaffs_dev_t *dev); +void yaffs_update_dirty_dirs(struct yaffs_dev *dev); -int yaffs_bg_gc(yaffs_dev_t *dev, unsigned urgency); +int yaffs_bg_gc(struct yaffs_dev *dev, unsigned urgency); /* Debug dump */ -int yaffs_dump_obj(yaffs_obj_t *obj); +int yaffs_dump_obj(struct yaffs_obj *obj); + +void yaffs_guts_test(struct yaffs_dev *dev); +int yaffs_guts_ll_init(struct yaffs_dev *dev); -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); +void yaffs_chunk_del(struct yaffs_dev *dev, int chunk_id, int mark_flash, + int lyn); +int yaffs_check_ff(u8 *buffer, int n_bytes); +void yaffs_handle_chunk_error(struct yaffs_dev *dev, + struct yaffs_block_info *bi); + +u8 *yaffs_get_temp_buffer(struct yaffs_dev *dev); +void yaffs_release_temp_buffer(struct yaffs_dev *dev, u8 *buffer); + +struct yaffs_obj *yaffs_find_or_create_by_number(struct yaffs_dev *dev, + int number, + enum yaffs_obj_type type); +int yaffs_put_chunk_in_file(struct yaffs_obj *in, int inode_chunk, + int nand_chunk, int in_scan); +void yaffs_set_obj_name(struct yaffs_obj *obj, const YCHAR *name); +void yaffs_set_obj_name_from_oh(struct yaffs_obj *obj, + const struct yaffs_obj_hdr *oh); +void yaffs_add_obj_to_dir(struct yaffs_obj *directory, struct yaffs_obj *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); +void yaffs_link_fixup(struct yaffs_dev *dev, struct list_head *hard_list); +void yaffs_block_became_dirty(struct yaffs_dev *dev, int block_no); +int yaffs_update_oh(struct yaffs_obj *in, const YCHAR *name, + int force, int is_shrink, int shadows, + struct yaffs_xattr_mod *xop); +void yaffs_handle_shadowed_obj(struct yaffs_dev *dev, int obj_id, + int backward_scanning); +int yaffs_check_alloc_available(struct yaffs_dev *dev, int n_chunks); +struct yaffs_tnode *yaffs_get_tnode(struct yaffs_dev *dev); +struct yaffs_tnode *yaffs_add_find_tnode_0(struct yaffs_dev *dev, + struct yaffs_file_var *file_struct, + u32 chunk_id, + struct yaffs_tnode *passed_tn); + +int yaffs_do_file_wr(struct yaffs_obj *in, const u8 *buffer, loff_t offset, + int n_bytes, int write_trhrough); +void yaffs_resize_file_down(struct yaffs_obj *obj, loff_t new_size); +void yaffs_skip_rest_of_block(struct yaffs_dev *dev); + +int yaffs_count_free_chunks(struct yaffs_dev *dev); + +struct yaffs_tnode *yaffs_find_tnode_0(struct yaffs_dev *dev, + struct yaffs_file_var *file_struct, + u32 chunk_id); + +u32 yaffs_get_group_base(struct yaffs_dev *dev, struct yaffs_tnode *tn, + unsigned pos); + +int yaffs_is_non_empty_dir(struct yaffs_obj *obj); + +int yaffs_format_dev(struct yaffs_dev *dev); + +void yaffs_addr_to_chunk(struct yaffs_dev *dev, loff_t addr, + int *chunk_out, u32 *offset_out); +/* + * Marshalling functions to get loff_t file sizes into aand out of + * object headers. + */ +void yaffs_oh_size_load(struct yaffs_obj_hdr *oh, loff_t fsize); +loff_t yaffs_oh_to_size(struct yaffs_obj_hdr *oh); +loff_t yaffs_max_file_size(struct yaffs_dev *dev); + +/* + * Debug function to count number of blocks in each state + * NB Needs to be called with correct number of integers + */ + +void yaffs_count_blocks_by_state(struct yaffs_dev *dev, int bs[10]); + +int yaffs_find_chunk_in_file(struct yaffs_obj *in, int inode_chunk, + struct yaffs_ext_tags *tags); #endif diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_linux.h b/target/linux/generic/files/fs/yaffs2/yaffs_linux.h index 19d7b824c5..c20ab14b7f 100644 --- a/target/linux/generic/files/fs/yaffs2/yaffs_linux.h +++ b/target/linux/generic/files/fs/yaffs2/yaffs_linux.h @@ -1,7 +1,7 @@ /* * YAFFS: Yet another Flash File System . A NAND-flash specific file system. * - * Copyright (C) 2002-2010 Aleph One Ltd. + * Copyright (C) 2002-2011 Aleph One Ltd. * for Toby Churchill Ltd and Brightstar Engineering * * Created by Charles Manning <charles@aleph1.co.uk> @@ -16,28 +16,33 @@ #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 +struct yaffs_linux_context { + struct list_head context_list; /* List of these we have mounted */ + struct yaffs_dev *dev; + struct super_block *super; + struct task_struct *bg_thread; /* Background thread for this device */ + int bg_running; + struct mutex gross_lock; /* Gross locking mutex*/ + u8 *spare_buffer; /* For mtdif2 use. Don't know the buffer size * at compile time so we have to allocate it. */ - struct ylist_head searchContexts; - void (*putSuperFunc)(struct super_block *sb); - - struct task_struct *readdirProcess; + struct list_head search_contexts; + struct task_struct *readdir_process; unsigned mount_id; + int dirty; }; -#define yaffs_dev_to_lc(dev) ((struct yaffs_LinuxContext *)((dev)->os_context)) +#define yaffs_dev_to_lc(dev) ((struct yaffs_linux_context *)((dev)->os_context)) #define yaffs_dev_to_mtd(dev) ((struct mtd_info *)((dev)->driver_context)) +#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 +#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 deleted file mode 100644 index f39b9aad28..0000000000 --- a/target/linux/generic/files/fs/yaffs2/yaffs_linux_allocator.c +++ /dev/null @@ -1,200 +0,0 @@ -/* - * 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 deleted file mode 100644 index 09d80b8562..0000000000 --- a/target/linux/generic/files/fs/yaffs2/yaffs_list.h +++ /dev/null @@ -1,127 +0,0 @@ -/* - * 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 b2d4318e66..7ae63c54a9 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) 2002-2010 Aleph One Ltd. + * Copyright (C) 2002-2011 Aleph One Ltd. * for Toby Churchill Ltd and Brightstar Engineering * * Created by Charles Manning <charles@aleph1.co.uk> @@ -13,24 +13,43 @@ #include "yportenv.h" - #include "yaffs_mtdif.h" #include "linux/mtd/mtd.h" #include "linux/types.h" #include "linux/time.h" #include "linux/mtd/nand.h" +#include "linux/kernel.h" +#include "linux/version.h" +#include "linux/types.h" +#include "yaffs_trace.h" +#include "yaffs_guts.h" #include "yaffs_linux.h" -int nandmtd_EraseBlockInNAND(yaffs_dev_t *dev, int blockNumber) + +#if (LINUX_VERSION_CODE < KERNEL_VERSION(3, 2, 0)) +#define MTD_OPS_AUTO_OOB MTD_OOB_AUTO +#endif + + +#if (LINUX_VERSION_CODE < KERNEL_VERSION(3, 4, 0)) +#define mtd_erase(m, ei) (m)->erase(m, ei) +#define mtd_write_oob(m, addr, pops) (m)->write_oob(m, addr, pops) +#define mtd_read_oob(m, addr, pops) (m)->read_oob(m, addr, pops) +#define mtd_block_isbad(m, offs) (m)->block_isbad(m, offs) +#define mtd_block_markbad(m, offs) (m)->block_markbad(m, offs) +#endif + + + +int nandmtd_erase_block(struct yaffs_dev *dev, int block_no) { struct mtd_info *mtd = yaffs_dev_to_mtd(dev); - __u32 addr = - ((loff_t) blockNumber) * dev->param.total_bytes_per_chunk - * dev->param.chunks_per_block; + u32 addr = + ((loff_t) block_no) * dev->param.total_bytes_per_chunk * + dev->param.chunks_per_block; struct erase_info ei; - int retval = 0; ei.mtd = mtd; @@ -41,16 +60,249 @@ int nandmtd_EraseBlockInNAND(yaffs_dev_t *dev, int blockNumber) ei.callback = NULL; ei.priv = (u_long) dev; - retval = mtd->erase(mtd, &ei); + retval = mtd_erase(mtd, &ei); if (retval == 0) return YAFFS_OK; - else + + return YAFFS_FAIL; +} + + +static int yaffs_mtd_write(struct yaffs_dev *dev, int nand_chunk, + const u8 *data, int data_len, + const u8 *oob, int oob_len) +{ + struct mtd_info *mtd = yaffs_dev_to_mtd(dev); + loff_t addr; + struct mtd_oob_ops ops; + int retval; + + yaffs_trace(YAFFS_TRACE_MTD, + "yaffs_mtd_write(%p, %d, %p, %d, %p, %d)\n", + dev, nand_chunk, data, data_len, oob, oob_len); + + if (!data || !data_len) { + data = NULL; + data_len = 0; + } + + if (!oob || !oob_len) { + oob = NULL; + oob_len = 0; + } + + addr = ((loff_t) nand_chunk) * dev->param.total_bytes_per_chunk; + memset(&ops, 0, sizeof(ops)); + ops.mode = MTD_OPS_AUTO_OOB; + ops.len = (data) ? data_len : 0; + ops.ooblen = oob_len; + ops.datbuf = (u8 *)data; + ops.oobbuf = (u8 *)oob; + + retval = mtd_write_oob(mtd, addr, &ops); + if (retval) { + yaffs_trace(YAFFS_TRACE_MTD, + "write_oob failed, chunk %d, mtd error %d", + nand_chunk, retval); + } + return retval ? YAFFS_FAIL : YAFFS_OK; +} + +static int yaffs_mtd_read(struct yaffs_dev *dev, int nand_chunk, + u8 *data, int data_len, + u8 *oob, int oob_len, + enum yaffs_ecc_result *ecc_result) +{ + struct mtd_info *mtd = yaffs_dev_to_mtd(dev); + loff_t addr; + struct mtd_oob_ops ops; + int retval; + + addr = ((loff_t) nand_chunk) * dev->param.total_bytes_per_chunk; + memset(&ops, 0, sizeof(ops)); + ops.mode = MTD_OPS_AUTO_OOB; + ops.len = (data) ? data_len : 0; + ops.ooblen = oob_len; + ops.datbuf = data; + ops.oobbuf = oob; + +#if (MTD_VERSION_CODE < MTD_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", + nand_chunk, retval); + + switch (retval) { + case 0: + /* no error */ + if(ecc_result) + *ecc_result = YAFFS_ECC_RESULT_NO_ERROR; + break; + + case -EUCLEAN: + /* MTD's ECC fixed the data */ + if(ecc_result) + *ecc_result = YAFFS_ECC_RESULT_FIXED; + dev->n_ecc_fixed++; + break; + + case -EBADMSG: + default: + /* MTD's ECC could not fix the data */ + dev->n_ecc_unfixed++; + if(ecc_result) + *ecc_result = YAFFS_ECC_RESULT_UNFIXED; return YAFFS_FAIL; + } + + return YAFFS_OK; } -int nandmtd_InitialiseNAND(yaffs_dev_t *dev) +static int yaffs_mtd_erase(struct yaffs_dev *dev, int block_no) +{ + struct mtd_info *mtd = yaffs_dev_to_mtd(dev); + + loff_t addr; + struct erase_info ei; + int retval = 0; + u32 block_size; + + block_size = dev->param.total_bytes_per_chunk * + dev->param.chunks_per_block; + addr = ((loff_t) block_no) * block_size; + + ei.mtd = mtd; + ei.addr = addr; + ei.len = block_size; + ei.time = 1000; + ei.retries = 2; + ei.callback = NULL; + ei.priv = (u_long) dev; + + retval = mtd_erase(mtd, &ei); + + if (retval == 0) + return YAFFS_OK; + + return YAFFS_FAIL; +} + +static int yaffs_mtd_mark_bad(struct yaffs_dev *dev, int block_no) +{ + struct mtd_info *mtd = yaffs_dev_to_mtd(dev); + int blocksize = dev->param.chunks_per_block * dev->param.total_bytes_per_chunk; + int retval; + + yaffs_trace(YAFFS_TRACE_BAD_BLOCKS, "marking block %d bad", block_no); + + retval = mtd_block_markbad(mtd, (loff_t) blocksize * block_no); + return (retval) ? YAFFS_FAIL : YAFFS_OK; +} + +static int yaffs_mtd_check_bad(struct yaffs_dev *dev, int block_no) +{ + struct mtd_info *mtd = yaffs_dev_to_mtd(dev); + int blocksize = dev->param.chunks_per_block * dev->param.total_bytes_per_chunk; + int retval; + + yaffs_trace(YAFFS_TRACE_MTD, "checking block %d bad", block_no); + + retval = mtd_block_isbad(mtd, (loff_t) blocksize * block_no); + return (retval) ? YAFFS_FAIL : YAFFS_OK; +} + +static int yaffs_mtd_initialise(struct yaffs_dev *dev) +{ + return YAFFS_OK; +} + +static int yaffs_mtd_deinitialise(struct yaffs_dev *dev) { return YAFFS_OK; } + +void yaffs_mtd_drv_install(struct yaffs_dev *dev) +{ + struct yaffs_driver *drv = &dev->drv; + + drv->drv_write_chunk_fn = yaffs_mtd_write; + drv->drv_read_chunk_fn = yaffs_mtd_read; + drv->drv_erase_fn = yaffs_mtd_erase; + drv->drv_mark_bad_fn = yaffs_mtd_mark_bad; + drv->drv_check_bad_fn = yaffs_mtd_check_bad; + drv->drv_initialise_fn = yaffs_mtd_initialise; + drv->drv_deinitialise_fn = yaffs_mtd_deinitialise; +} + + +struct mtd_info * yaffs_get_mtd_device(dev_t sdev) +{ + struct mtd_info *mtd; + + mtd = yaffs_get_mtd_device(sdev); + + /* Check it's an mtd device..... */ + if (MAJOR(sdev) != MTD_BLOCK_MAJOR) + return NULL; /* This isn't an mtd device */ + + /* Check it's NAND */ + if (mtd->type != MTD_NANDFLASH) { + yaffs_trace(YAFFS_TRACE_ALWAYS, + "yaffs: MTD device is not NAND it's type %d", + mtd->type); + return NULL; + } + + yaffs_trace(YAFFS_TRACE_OS, " %s %d", WRITE_SIZE_STR, WRITE_SIZE(mtd)); + yaffs_trace(YAFFS_TRACE_OS, " oobsize %d", mtd->oobsize); + yaffs_trace(YAFFS_TRACE_OS, " erasesize %d", mtd->erasesize); +#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 29) + yaffs_trace(YAFFS_TRACE_OS, " size %u", mtd->size); +#else + yaffs_trace(YAFFS_TRACE_OS, " size %lld", mtd->size); +#endif + + return mtd; +} + +int yaffs_verify_mtd(struct mtd_info *mtd, int yaffs_version, int inband_tags) +{ + if (yaffs_version == 2) { + if ((WRITE_SIZE(mtd) < YAFFS_MIN_YAFFS2_CHUNK_SIZE || + mtd->oobsize < YAFFS_MIN_YAFFS2_SPARE_SIZE) && + !inband_tags) { + yaffs_trace(YAFFS_TRACE_ALWAYS, + "MTD device does not have the right page sizes" + ); + return -1; + } + } else { + if (WRITE_SIZE(mtd) < YAFFS_BYTES_PER_CHUNK || + mtd->oobsize != YAFFS_BYTES_PER_SPARE) { + yaffs_trace(YAFFS_TRACE_ALWAYS, + "MTD device does not support have the right page sizes" + ); + return -1; + } + } + + return 0; +} + + +void yaffs_put_mtd_device(struct mtd_info *mtd) +{ + if(mtd) + put_mtd_device(mtd); +} diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_mtdif.h b/target/linux/generic/files/fs/yaffs2/yaffs_mtdif.h index 31fc3834a8..9cff224c6d 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) 2002-2010 Aleph One Ltd. + * Copyright (C) 2002-2011 Aleph One Ltd. * for Toby Churchill Ltd and Brightstar Engineering * * Created by Charles Manning <charles@aleph1.co.uk> @@ -18,10 +18,8 @@ #include "yaffs_guts.h" -#if (MTD_VERSION_CODE < MTD_VERSION(2, 6, 18)) -extern struct nand_oobinfo yaffs_oobinfo; -extern struct nand_oobinfo yaffs_noeccinfo; -#endif -int nandmtd_EraseBlockInNAND(yaffs_dev_t *dev, int blockNumber); -int nandmtd_InitialiseNAND(yaffs_dev_t *dev); +void yaffs_mtd_drv_install(struct yaffs_dev *dev); +struct mtd_info * yaffs_get_mtd_device(dev_t sdev); +void yaffs_put_mtd_device(struct mtd_info *mtd); +int yaffs_verify_mtd(struct mtd_info *mtd, int yaffs_version, int inband_tags); #endif diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_mtdif1.c b/target/linux/generic/files/fs/yaffs2/yaffs_mtdif1.c deleted file mode 100644 index ca7b0a3789..0000000000 --- a/target/linux/generic/files/fs/yaffs2/yaffs_mtdif1.c +++ /dev/null @@ -1,361 +0,0 @@ -/* - * YAFFS: Yet another FFS. A NAND-flash specific file system. - * yaffs_mtdif1.c NAND mtd interface functions for small-page NAND. - * - * 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 - * 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_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 (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_calc_tags_ecc */ -#include "yaffs_linux.h" - -#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 (MTD_VERSION_CODE > MTD_VERSION(2, 6, 17)) - -#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 - * 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 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 = { - .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_dev_t *dev, - int nand_chunk, const __u8 *data, const yaffs_ext_tags *etags) -{ - 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_t are compatible */ - compile_time_assertion(sizeof(yaffs_PackedTags1) == 12); - compile_time_assertion(sizeof(yaffs_tags_t) == 8); - - yaffs_PackTags1(&pt1, etags); - yaffs_calc_tags_ecc((yaffs_tags_t *)&pt1); - - /* When deleting a chunk, the upper layer provides only skeletal - * 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->is_deleted) { - memset(&pt1, 0xff, 8); - /* clear delete status bit to indicate deleted */ - pt1.deleted = 0; - } -#else - ((__u8 *)&pt1)[8] = 0xff; - if (etags->is_deleted) { - memset(&pt1, 0xff, 8); - /* zero page_status 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) { - 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 ecc_result. - */ -static int rettags(yaffs_ext_tags *etags, int ecc_result, int retval) -{ - if (etags) { - memset(etags, 0, sizeof(*etags)); - etags->ecc_result = ecc_result; - } - return retval; -} - -/* Read a chunk (page) from NAND. - * - * Caller expects ExtendedTags data to be usable even on error; that is, - * 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 ecc_result and block_bad members to refect state. - * - * Returns YAFFS_OK or YAFFS_FAIL. - */ -int nandmtd1_ReadChunkWithTagsFromNAND(yaffs_dev_t *dev, - int nand_chunk, __u8 *data, yaffs_ext_tags *etags) -{ - 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; - - 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 (MTD_VERSION_CODE < MTD_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) { - T(YAFFS_TRACE_MTD, - (TSTR("read_oob failed, chunk %d, mtd error %d"TENDSTR), - nand_chunk, retval)); - } - - switch (retval) { - case 0: - /* no error */ - break; - - case -EUCLEAN: - /* MTD's ECC fixed the data */ - eccres = YAFFS_ECC_RESULT_FIXED; - dev->n_ecc_fixed++; - break; - - case -EBADMSG: - /* MTD's ECC could not fix the data */ - dev->n_ecc_unfixed++; - /* fall into... */ - default: - rettags(etags, YAFFS_ECC_RESULT_UNFIXED, 0); - etags->block_bad = (mtd->block_isbad)(mtd, addr); - return YAFFS_FAIL; - } - - /* Check for a blank/erased chunk. - */ - 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); - } - -#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 - deleted = (yaffs_count_bits(((__u8 *)&pt1)[8]) < 7); -#endif - - /* Check the packed tags mini-ECC and correct if necessary/possible. - */ - 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->n_tags_ecc_fixed++; - if (eccres == YAFFS_ECC_RESULT_NO_ERROR) - eccres = YAFFS_ECC_RESULT_FIXED; - break; - default: - /* unrecovered tags-ECC error */ - 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_unpack_tags1 happy] - */ - pt1.shouldBeFF = 0xFFFFFFFF; - yaffs_unpack_tags1(etags, &pt1); - etags->ecc_result = eccres; - - /* Set deleted state */ - etags->is_deleted = deleted; - 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_dev_s *dev, int block_no) -{ - struct mtd_info *mtd = yaffs_dev_to_mtd(dev); - int blocksize = dev->param.chunks_per_block * dev->data_bytes_per_chunk; - int retval; - - T(YAFFS_TRACE_BAD_BLOCKS,(TSTR("marking block %d bad"TENDSTR), block_no)); - - retval = mtd->block_markbad(mtd, (loff_t)blocksize * block_no); - 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) { - 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; -} - -/* 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_dev_s *dev, int block_no, - yaffs_block_state_t *pState, __u32 *pSequenceNumber) -{ - 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; - - /* 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); - 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.ecc_result != YAFFS_ECC_RESULT_NO_ERROR) { - /* bad tags, need to look more closely */ - state = YAFFS_BLOCK_STATE_NEEDS_SCANNING; - } else if (etags.chunk_used) { - state = YAFFS_BLOCK_STATE_NEEDS_SCANNING; - seqnum = etags.seq_number; - } else { - state = YAFFS_BLOCK_STATE_EMPTY; - } - - *pState = state; - *pSequenceNumber = seqnum; - - /* query always succeeds */ - return YAFFS_OK; -} - -#endif /*MTD_VERSION*/ diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_mtdif1.h b/target/linux/generic/files/fs/yaffs2/yaffs_mtdif1.h deleted file mode 100644 index 1b2befe3c8..0000000000 --- a/target/linux/generic/files/fs/yaffs2/yaffs_mtdif1.h +++ /dev/null @@ -1,28 +0,0 @@ -/* - * 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 - * - * 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_MTDIF1_H__ -#define __YAFFS_MTDIF1_H__ - -int nandmtd1_WriteChunkWithTagsToNAND(yaffs_dev_t *dev, int nand_chunk, - const __u8 *data, const yaffs_ext_tags *tags); - -int nandmtd1_ReadChunkWithTagsFromNAND(yaffs_dev_t *dev, int nand_chunk, - __u8 *data, yaffs_ext_tags *tags); - -int nandmtd1_MarkNANDBlockBad(struct yaffs_dev_s *dev, int block_no); - -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 deleted file mode 100644 index c6ebdaa703..0000000000 --- a/target/linux/generic/files/fs/yaffs2/yaffs_mtdif2.c +++ /dev/null @@ -1,257 +0,0 @@ -/* - * 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. - */ - -/* mtd interface for YAFFS2 */ - -#include "yportenv.h" -#include "yaffs_trace.h" - -#include "yaffs_mtdif2.h" - -#include "linux/mtd/mtd.h" -#include "linux/types.h" -#include "linux/time.h" - -#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_dev_t *dev, int nand_chunk, - const __u8 *data, - const yaffs_ext_tags *tags) -{ - struct mtd_info *mtd = yaffs_dev_to_mtd(dev); -#if (MTD_VERSION_CODE > MTD_VERSION(2, 6, 17)) - struct mtd_oob_ops ops; -#else - size_t dummy; -#endif - int retval = 0; - - loff_t addr; - - 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), nand_chunk, data, tags)); - - - 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 - * the end of the data buffer. - */ - if (!data || !tags) - BUG(); - else if (dev->param.inband_tags) { - yaffs_PackedTags2TagsPart *pt2tp; - pt2tp = (yaffs_PackedTags2TagsPart *)(data + dev->data_bytes_per_chunk); - yaffs_PackTags2TagsPart(pt2tp, tags); - } else - 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->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->param.inband_tags) ? NULL : packed_tags_ptr; - retval = mtd->write_oob(mtd, addr, &ops); - -#else - if (!dev->param.inband_tags) { - retval = - mtd->write_ecc(mtd, addr, dev->data_bytes_per_chunk, - &dummy, data, (__u8 *) packed_tags_ptr, NULL); - } else { - retval = - mtd->write(mtd, addr, dev->param.total_bytes_per_chunk, &dummy, - data); - } -#endif - - if (retval == 0) - return YAFFS_OK; - else - return YAFFS_FAIL; -} - -int nandmtd2_ReadChunkWithTagsFromNAND(yaffs_dev_t *dev, int nand_chunk, - __u8 *data, yaffs_ext_tags *tags) -{ - struct mtd_info *mtd = yaffs_dev_to_mtd(dev); -#if (MTD_VERSION_CODE > MTD_VERSION(2, 6, 17)) - struct mtd_oob_ops ops; -#endif - size_t dummy; - int retval = 0; - int localData = 0; - - 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), nand_chunk, data, tags)); - - if (dev->param.inband_tags) { - - if (!data) { - localData = 1; - data = yaffs_get_temp_buffer(dev, __LINE__); - } - - - } - - -#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) - 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 = packed_tags_size; - ops.len = data ? dev->data_bytes_per_chunk : packed_tags_size; - ops.ooboffs = 0; - ops.datbuf = data; - ops.oobbuf = yaffs_dev_to_lc(dev)->spareBuffer; - retval = mtd->read_oob(mtd, addr, &ops); - } -#else - if (!dev->param.inband_tags && data && tags) { - - 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->data_bytes_per_chunk, &dummy, - data); - if (!dev->param.inband_tags && tags) - retval = - mtd->read_oob(mtd, addr, mtd->oobsize, &dummy, - dev->spareBuffer); - } -#endif - - - if (dev->param.inband_tags) { - if (tags) { - yaffs_PackedTags2TagsPart *pt2tp; - pt2tp = (yaffs_PackedTags2TagsPart *)&data[dev->data_bytes_per_chunk]; - yaffs_unpack_tags2tags_part(tags, pt2tp); - } - } else { - if (tags) { - 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_release_temp_buffer(dev, data, __LINE__); - - 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_dev_s *dev, int block_no) -{ - struct mtd_info *mtd = yaffs_dev_to_mtd(dev); - int retval; - T(YAFFS_TRACE_MTD, - (TSTR("nandmtd2_MarkNANDBlockBad %d" TENDSTR), block_no)); - - retval = - mtd->block_markbad(mtd, - block_no * dev->param.chunks_per_block * - dev->param.total_bytes_per_chunk); - - if (retval == 0) - return YAFFS_OK; - else - return YAFFS_FAIL; - -} - -int nandmtd2_QueryNANDBlock(struct yaffs_dev_s *dev, int block_no, - yaffs_block_state_t *state, __u32 *seq_number) -{ - struct mtd_info *mtd = yaffs_dev_to_mtd(dev); - int retval; - - T(YAFFS_TRACE_MTD, - (TSTR("nandmtd2_QueryNANDBlock %d" TENDSTR), block_no)); - retval = - mtd->block_isbad(mtd, - 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; - *seq_number = 0; - } else { - yaffs_ext_tags t; - nandmtd2_ReadChunkWithTagsFromNAND(dev, - block_no * - dev->param.chunks_per_block, NULL, - &t); - - if (t.chunk_used) { - *seq_number = t.seq_number; - *state = YAFFS_BLOCK_STATE_NEEDS_SCANNING; - } else { - *seq_number = 0; - *state = YAFFS_BLOCK_STATE_EMPTY; - } - } - T(YAFFS_TRACE_MTD, - (TSTR("block is bad seq %d state %d" TENDSTR), *seq_number, - *state)); - - if (retval == 0) - return YAFFS_OK; - else - return YAFFS_FAIL; -} - diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_mtdif2.h b/target/linux/generic/files/fs/yaffs2/yaffs_mtdif2.h deleted file mode 100644 index 31c821690a..0000000000 --- a/target/linux/generic/files/fs/yaffs2/yaffs_mtdif2.h +++ /dev/null @@ -1,29 +0,0 @@ -/* - * 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_MTDIF2_H__ -#define __YAFFS_MTDIF2_H__ - -#include "yaffs_guts.h" -int nandmtd2_WriteChunkWithTagsToNAND(yaffs_dev_t *dev, int nand_chunk, - const __u8 *data, - 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 index a4ed297352..4bdf4ed743 100644 --- a/target/linux/generic/files/fs/yaffs2/yaffs_nameval.c +++ b/target/linux/generic/files/fs/yaffs2/yaffs_nameval.c @@ -1,7 +1,7 @@ /* * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. * - * Copyright (C) 2002-2010 Aleph One Ltd. + * Copyright (C) 2002-2011 Aleph One Ltd. * for Toby Churchill Ltd and Brightstar Engineering * * Created by Charles Manning <charles@aleph1.co.uk> @@ -12,58 +12,58 @@ */ /* - * This simple implementation of a name-value store assumes a small number of values and fits - * into a small finite buffer. + * 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 + * 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 *exist_size) { - int pos=0; + 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) + memcpy(&size, xb, sizeof(int)); + while (size > 0 && (size < xb_size) && (pos + size < xb_size)) { + if (!strncmp((YCHAR *) (xb + pos + sizeof(int)), + name, size)) { + if (exist_size) *exist_size = size; return pos; } pos += size; - if(pos < xb_size -sizeof(int)) - memcpy(&size,xb + pos,sizeof(int)); + if (pos < xb_size - sizeof(int)) + memcpy(&size, xb + pos, sizeof(int)); else size = 0; } - if(exist_size) + if (exist_size) *exist_size = 0; - return -1; + return -ENODATA; } static int nval_used(const char *xb, int xb_size) { - int pos=0; + int pos = 0; int size; - memcpy(&size,xb + pos,sizeof(int)); - while(size > 0 && (size < xb_size) && (pos + size < xb_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)); + if (pos < xb_size - sizeof(int)) + memcpy(&size, xb + pos, sizeof(int)); else size = 0; } @@ -72,71 +72,74 @@ static int nval_used(const char *xb, int xb_size) int nval_del(char *xb, int xb_size, const YCHAR *name) { - int pos = nval_find(xb, xb_size, name, NULL); + 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 + + if (pos < 0 || pos >= xb_size) return -ENODATA; + + /* 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; } -int nval_set(char *xb, int xb_size, const YCHAR *name, const char *buf, int bsize, int flags) +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 namelen = strnlen(name, xb_size); int reclen; int size_exist = 0; int space; int start; - pos = nval_find(xb,xb_size,name, &size_exist); + pos = nval_find(xb, xb_size, name, &size_exist); - if(flags & XATTR_CREATE && pos >= 0) + if (flags & XATTR_CREATE && pos >= 0) return -EEXIST; - if(flags & XATTR_REPLACE && pos < 0) + if (flags & XATTR_REPLACE && pos < 0) return -ENODATA; - start = nval_used(xb,xb_size); + start = nval_used(xb, xb_size); space = xb_size - start + size_exist; reclen = (sizeof(int) + namelen + 1 + bsize); - if(reclen > space) + if (reclen > space) return -ENOSPC; - if(pos >= 0){ - nval_del(xb,xb_size,name); + 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); + memcpy(xb + pos, &reclen, sizeof(int)); + pos += sizeof(int); + 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 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 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 */ + + 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){ + while (xb[pos] && size > 0 && pos < xb_size) { pos++; size--; } @@ -144,16 +147,21 @@ int nval_get(const char *xb, int xb_size, const YCHAR *name, char *buf, int bsiz pos++; size--; - if(size <= bsize){ - memcpy(buf,xb + pos,size); + /* If bsize is zero then this is a size query. + * Return the size, but don't copy. + */ + if (!bsize) + return size; + + if (size <= bsize) { + memcpy(buf, xb + pos, size); return size; } - } - if(pos >= 0) + if (pos >= 0) return -ERANGE; - else - return -ENODATA; + + return -ENODATA; } int nval_list(const char *xb, int xb_size, char *buf, int bsize) @@ -164,33 +172,36 @@ int nval_list(const char *xb, int xb_size, char *buf, int bsize) 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; + 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 = 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){ + if (sizeof(YCHAR) > 1) { *buf = '\0'; buf++; } - ncopied += (name_len+1); - } else + ncopied += (name_len + 1); + } else { filled = 1; - pos+=size; - if(pos < xb_size -sizeof(int)) - memcpy(&size,xb + pos,sizeof(int)); + } + 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 index 4255f3b053..951e64f872 100644 --- a/target/linux/generic/files/fs/yaffs2/yaffs_nameval.h +++ b/target/linux/generic/files/fs/yaffs2/yaffs_nameval.h @@ -1,7 +1,7 @@ /* * YAFFS: Yet another Flash File System . A NAND-flash specific file system. * - * Copyright (C) 2002-2010 Aleph One Ltd. + * Copyright (C) 2002-2011 Aleph One Ltd. * for Toby Churchill Ltd and Brightstar Engineering * * Created by Charles Manning <charles@aleph1.co.uk> @@ -12,14 +12,17 @@ * * 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_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 d1fe84af8c..0d8499bdc6 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) 2002-2010 Aleph One Ltd. + * Copyright (C) 2002-2011 Aleph One Ltd. * for Toby Churchill Ltd and Brightstar Engineering * * Created by Charles Manning <charles@aleph1.co.uk> @@ -13,128 +13,110 @@ #include "yaffs_nand.h" #include "yaffs_tagscompat.h" -#include "yaffs_tagsvalidity.h" #include "yaffs_getblockinfo.h" +#include "yaffs_summary.h" -int yaffs_rd_chunk_tags_nand(yaffs_dev_t *dev, int nand_chunk, - __u8 *buffer, - yaffs_ext_tags *tags) +static int apply_chunk_offset(struct yaffs_dev *dev, int chunk) { - int result; - yaffs_ext_tags localTags; + return chunk - dev->chunk_offset; +} - int realignedChunkInNAND = nand_chunk - dev->chunk_offset; +int yaffs_rd_chunk_tags_nand(struct yaffs_dev *dev, int nand_chunk, + u8 *buffer, struct yaffs_ext_tags *tags) +{ + int result; + struct yaffs_ext_tags local_tags; + int flash_chunk = apply_chunk_offset(dev, nand_chunk); dev->n_page_reads++; - /* If there are no tags provided, use local tags to get prioritised gc working */ + /* If there are no tags provided use local tags. */ if (!tags) - tags = &localTags; - - if (dev->param.read_chunk_tags_fn) - result = dev->param.read_chunk_tags_fn(dev, realignedChunkInNAND, buffer, - tags); - else - result = yaffs_tags_compat_rd(dev, - realignedChunkInNAND, - buffer, - tags); - if (tags && - tags->ecc_result > YAFFS_ECC_RESULT_NO_ERROR) { - - yaffs_block_info_t *bi; - bi = yaffs_get_block_info(dev, nand_chunk/dev->param.chunks_per_block); + tags = &local_tags; + + result = dev->tagger.read_chunk_tags_fn(dev, flash_chunk, buffer, tags); + if (tags && tags->ecc_result > YAFFS_ECC_RESULT_NO_ERROR) { + + struct yaffs_block_info *bi; + bi = yaffs_get_block_info(dev, + nand_chunk / + dev->param.chunks_per_block); yaffs_handle_chunk_error(dev, bi); } - return result; } -int yaffs_wr_chunk_tags_nand(yaffs_dev_t *dev, - int nand_chunk, - const __u8 *buffer, - yaffs_ext_tags *tags) +int yaffs_wr_chunk_tags_nand(struct yaffs_dev *dev, + int nand_chunk, + const u8 *buffer, struct yaffs_ext_tags *tags) { + int result; + int flash_chunk = apply_chunk_offset(dev, nand_chunk); dev->n_page_writes++; - nand_chunk -= dev->chunk_offset; - - - if (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), nand_chunk, - tags->obj_id, tags->chunk_id)); - } else { - T(YAFFS_TRACE_ERROR, (TSTR("Writing with no tags" TENDSTR))); - YBUG(); + if (!tags) { + yaffs_trace(YAFFS_TRACE_ERROR, "Writing with no tags"); + BUG(); + return YAFFS_FAIL; } - if (dev->param.write_chunk_tags_fn) - return dev->param.write_chunk_tags_fn(dev, nand_chunk, buffer, - tags); - else - return yaffs_tags_compat_wr(dev, - nand_chunk, - buffer, - tags); + tags->seq_number = dev->seq_number; + tags->chunk_used = 1; + yaffs_trace(YAFFS_TRACE_WRITE, + "Writing chunk %d tags %d %d", + nand_chunk, tags->obj_id, tags->chunk_id); + + result = dev->tagger.write_chunk_tags_fn(dev, flash_chunk, + buffer, tags); + + yaffs_summary_add(dev, tags, nand_chunk); + + return result; } -int yaffs_mark_bad(yaffs_dev_t *dev, int block_no) +int yaffs_mark_bad(struct yaffs_dev *dev, int block_no) { block_no -= dev->block_offset; + dev->n_bad_markings++; + if (dev->param.disable_bad_block_marking) + return YAFFS_OK; - if (dev->param.bad_block_fn) - return dev->param.bad_block_fn(dev, block_no); - else - return yaffs_tags_compat_mark_bad(dev, block_no); + return dev->tagger.mark_bad_fn(dev, block_no); } -int yaffs_query_init_block_state(yaffs_dev_t *dev, - int block_no, - yaffs_block_state_t *state, - __u32 *seq_number) + +int yaffs_query_init_block_state(struct yaffs_dev *dev, + int block_no, + enum yaffs_block_state *state, + u32 *seq_number) { block_no -= dev->block_offset; - - if (dev->param.query_block_fn) - return dev->param.query_block_fn(dev, block_no, state, seq_number); - else - return yaffs_tags_compat_query_block(dev, block_no, - state, - seq_number); + return dev->tagger.query_block_fn(dev, block_no, state, seq_number); } - -int yaffs_erase_block(struct yaffs_dev_s *dev, - int flash_block) +int yaffs_erase_block(struct yaffs_dev *dev, int block_no) { int result; - flash_block -= dev->block_offset; - + block_no -= dev->block_offset; dev->n_erasures++; - - result = dev->param.erase_fn(dev, flash_block); - + result = dev->drv.drv_erase_fn(dev, block_no); return result; } -int yaffs_init_nand(struct yaffs_dev_s *dev) +int yaffs_init_nand(struct yaffs_dev *dev) { - if(dev->param.initialise_flash_fn) - return dev->param.initialise_flash_fn(dev); + if (dev->drv.drv_initialise_fn) + return dev->drv.drv_initialise_fn(dev); return YAFFS_OK; } - - +int yaffs_deinit_nand(struct yaffs_dev *dev) +{ + if (dev->drv.drv_deinitialise_fn) + return dev->drv.drv_deinitialise_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 24cd147af8..804e97ad66 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) 2002-2010 Aleph One Ltd. + * Copyright (C) 2002-2011 Aleph One Ltd. * for Toby Churchill Ltd and Brightstar Engineering * * Created by Charles Manning <charles@aleph1.co.uk> @@ -17,28 +17,23 @@ #define __YAFFS_NAND_H__ #include "yaffs_guts.h" +int yaffs_rd_chunk_tags_nand(struct yaffs_dev *dev, int nand_chunk, + u8 *buffer, struct yaffs_ext_tags *tags); +int yaffs_wr_chunk_tags_nand(struct yaffs_dev *dev, + int nand_chunk, + const u8 *buffer, struct yaffs_ext_tags *tags); -int yaffs_rd_chunk_tags_nand(yaffs_dev_t *dev, int nand_chunk, - __u8 *buffer, - yaffs_ext_tags *tags); +int yaffs_mark_bad(struct yaffs_dev *dev, int block_no); -int yaffs_wr_chunk_tags_nand(yaffs_dev_t *dev, - int nand_chunk, - const __u8 *buffer, - yaffs_ext_tags *tags); +int yaffs_query_init_block_state(struct yaffs_dev *dev, + int block_no, + enum yaffs_block_state *state, + unsigned *seq_number); -int yaffs_mark_bad(yaffs_dev_t *dev, int block_no); +int yaffs_erase_block(struct yaffs_dev *dev, int flash_block); -int yaffs_query_init_block_state(yaffs_dev_t *dev, - int block_no, - yaffs_block_state_t *state, - unsigned *seq_number); - -int yaffs_erase_block(struct yaffs_dev_s *dev, - int flash_block); - -int yaffs_init_nand(struct yaffs_dev_s *dev); +int yaffs_init_nand(struct yaffs_dev *dev); +int yaffs_deinit_nand(struct yaffs_dev *dev); #endif - diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_nandemul2k.h b/target/linux/generic/files/fs/yaffs2/yaffs_nandemul2k.h deleted file mode 100644 index 30b7cbdcf4..0000000000 --- a/target/linux/generic/files/fs/yaffs2/yaffs_nandemul2k.h +++ /dev/null @@ -1,39 +0,0 @@ -/* - * 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. - */ - -/* Interface to emulated NAND functions (2k page size) */ - -#ifndef __YAFFS_NANDEMUL2K_H__ -#define __YAFFS_NANDEMUL2K_H__ - -#include "yaffs_guts.h" - -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); - -#endif diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_packedtags1.c b/target/linux/generic/files/fs/yaffs2/yaffs_packedtags1.c index 3ad49a941f..dd9a331d8f 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) 2002-2010 Aleph One Ltd. + * Copyright (C) 2002-2011 Aleph One Ltd. * for Toby Churchill Ltd and Brightstar Engineering * * Created by Charles Manning <charles@aleph1.co.uk> @@ -14,7 +14,16 @@ #include "yaffs_packedtags1.h" #include "yportenv.h" -void yaffs_PackTags1(yaffs_PackedTags1 *pt, const yaffs_ext_tags *t) +static const u8 all_ff[20] = { + 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff +}; + +void yaffs_pack_tags1(struct yaffs_packed_tags1 *pt, + const struct yaffs_ext_tags *t) { pt->chunk_id = t->chunk_id; pt->serial_number = t->serial_number; @@ -22,20 +31,17 @@ void yaffs_PackTags1(yaffs_PackedTags1 *pt, const yaffs_ext_tags *t) pt->obj_id = t->obj_id; pt->ecc = 0; pt->deleted = (t->is_deleted) ? 0 : 1; - pt->unusedStuff = 0; - pt->shouldBeFF = 0xFFFFFFFF; - + pt->unused_stuff = 0; + pt->should_be_ff = 0xffffffff; } -void yaffs_unpack_tags1(yaffs_ext_tags *t, const yaffs_PackedTags1 *pt) +void yaffs_unpack_tags1(struct yaffs_ext_tags *t, + const struct yaffs_packed_tags1 *pt) { - static const __u8 allFF[] = - { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, -0xff }; - if (memcmp(allFF, pt, sizeof(yaffs_PackedTags1))) { + if (memcmp(all_ff, pt, sizeof(struct yaffs_packed_tags1))) { t->block_bad = 0; - if (pt->shouldBeFF != 0xFFFFFFFF) + if (pt->should_be_ff != 0xffffffff) t->block_bad = 1; t->chunk_used = 1; t->obj_id = pt->obj_id; @@ -45,6 +51,6 @@ void yaffs_unpack_tags1(yaffs_ext_tags *t, const yaffs_PackedTags1 *pt) t->is_deleted = (pt->deleted) ? 0 : 1; t->serial_number = pt->serial_number; } else { - memset(t, 0, sizeof(yaffs_ext_tags)); + memset(t, 0, sizeof(struct 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 881cc75f30..b80f0a5b15 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) 2002-2010 Aleph One Ltd. + * Copyright (C) 2002-2011 Aleph One Ltd. * for Toby Churchill Ltd and Brightstar Engineering * * Created by Charles Manning <charles@aleph1.co.uk> @@ -20,18 +20,20 @@ #include "yaffs_guts.h" -typedef struct { +struct yaffs_packed_tags1 { 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; - unsigned shouldBeFF; + unsigned unused_stuff:1; + unsigned should_be_ff; -} yaffs_PackedTags1; +}; -void yaffs_PackTags1(yaffs_PackedTags1 *pt, const yaffs_ext_tags *t); -void yaffs_unpack_tags1(yaffs_ext_tags *t, const yaffs_PackedTags1 *pt); +void yaffs_pack_tags1(struct yaffs_packed_tags1 *pt, + const struct yaffs_ext_tags *t); +void yaffs_unpack_tags1(struct yaffs_ext_tags *t, + const struct yaffs_packed_tags1 *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 6b854cb0eb..e1d18cc33c 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) 2002-2010 Aleph One Ltd. + * Copyright (C) 2002-2011 Aleph One Ltd. * for Toby Churchill Ltd and Brightstar Engineering * * Created by Charles Manning <charles@aleph1.co.uk> @@ -14,7 +14,6 @@ #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 * NAND storage @@ -32,167 +31,167 @@ #define EXTRA_SHADOWS_FLAG 0x20000000 #define EXTRA_SPARE_FLAGS 0x10000000 -#define ALL_EXTRA_FLAGS 0xF0000000 +#define ALL_EXTRA_FLAGS 0xf0000000 /* Also, the top 4 bits of the object Id are set to the object type. */ #define EXTRA_OBJECT_TYPE_SHIFT (28) -#define EXTRA_OBJECT_TYPE_MASK ((0x0F) << EXTRA_OBJECT_TYPE_SHIFT) +#define EXTRA_OBJECT_TYPE_MASK ((0x0f) << EXTRA_OBJECT_TYPE_SHIFT) - -static void yaffs_DumpPackedTags2TagsPart(const yaffs_PackedTags2TagsPart *ptt) +static void yaffs_dump_packed_tags2_tags_only( + const struct yaffs_packed_tags2_tags_only *ptt) { - T(YAFFS_TRACE_MTD, - (TSTR("packed tags obj %d chunk %d byte %d seq %d" TENDSTR), - ptt->obj_id, ptt->chunk_id, ptt->n_bytes, - ptt->seq_number)); + yaffs_trace(YAFFS_TRACE_MTD, + "packed tags obj %d chunk %d byte %d seq %d", + ptt->obj_id, ptt->chunk_id, ptt->n_bytes, ptt->seq_number); } -static void yaffs_DumpPackedTags2(const yaffs_PackedTags2 *pt) + +static void yaffs_dump_packed_tags2(const struct yaffs_packed_tags2 *pt) { - yaffs_DumpPackedTags2TagsPart(&pt->t); + yaffs_dump_packed_tags2_tags_only(&pt->t); } -static void yaffs_DumpTags2(const yaffs_ext_tags *t) +static void yaffs_dump_tags2(const struct 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->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)); + yaffs_trace(YAFFS_TRACE_MTD, + "ext.tags eccres %d blkbad %d chused %d obj %d chunk%d byte %d del %d ser %d seq %d", + 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_ext_tags *t) +static int yaffs_check_tags_extra_packable(const struct yaffs_ext_tags *t) +{ + if (t->chunk_id != 0 || !t->extra_available) + return 0; + + /* Check if the file size is too long to store */ + if (t->extra_obj_type == YAFFS_OBJECT_TYPE_FILE && + (t->extra_file_size >> 31) != 0) + return 0; + return 1; +} + +void yaffs_pack_tags2_tags_only(struct yaffs_packed_tags2_tags_only *ptt, + const struct yaffs_ext_tags *t) { 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->chunk_id == 0 && t->extra_available) { + /* Only store extra tags for object headers. + * If it is a file then only store if the file size is short\ + * enough to fit. + */ + if (yaffs_check_tags_extra_packable(t)) { /* Store the extra header info instead */ /* We save the parent object in the chunk_id */ - ptt->chunk_id = EXTRA_HEADER_INFO_FLAG - | t->extra_parent_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); + 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; + ptt->n_bytes = (unsigned) t->extra_file_size; else ptt->n_bytes = 0; } - yaffs_DumpPackedTags2TagsPart(ptt); - yaffs_DumpTags2(t); + yaffs_dump_packed_tags2_tags_only(ptt); + yaffs_dump_tags2(t); } - -void yaffs_PackTags2(yaffs_PackedTags2 *pt, const yaffs_ext_tags *t, int tagsECC) +void yaffs_pack_tags2(struct yaffs_packed_tags2 *pt, + const struct yaffs_ext_tags *t, int tags_ecc) { - yaffs_PackTags2TagsPart(&pt->t, t); + yaffs_pack_tags2_tags_only(&pt->t, t); - if(tagsECC) + if (tags_ecc) yaffs_ecc_calc_other((unsigned char *)&pt->t, - sizeof(yaffs_PackedTags2TagsPart), - &pt->ecc); + sizeof(struct yaffs_packed_tags2_tags_only), + &pt->ecc); } - -void yaffs_unpack_tags2tags_part(yaffs_ext_tags *t, - yaffs_PackedTags2TagsPart *ptt) +void yaffs_unpack_tags2_tags_only(struct yaffs_ext_tags *t, + struct yaffs_packed_tags2_tags_only *ptt) { + memset(t, 0, sizeof(struct yaffs_ext_tags)); + + if (ptt->seq_number == 0xffffffff) + return; + + 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->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; - memset(t, 0, sizeof(yaffs_ext_tags)); - - yaffs_init_tags(t); - - 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->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->extra_length = ptt->n_bytes; - } + if (t->extra_obj_type == YAFFS_OBJECT_TYPE_HARDLINK) + t->extra_equiv_id = ptt->n_bytes; + else + t->extra_file_size = ptt->n_bytes; } - - yaffs_DumpPackedTags2TagsPart(ptt); - yaffs_DumpTags2(t); - + yaffs_dump_packed_tags2_tags_only(ptt); + yaffs_dump_tags2(t); } - -void yaffs_unpack_tags2(yaffs_ext_tags *t, yaffs_PackedTags2 *pt, int tagsECC) +void yaffs_unpack_tags2(struct yaffs_ext_tags *t, struct yaffs_packed_tags2 *pt, + int tags_ecc) { + enum yaffs_ecc_result ecc_result = YAFFS_ECC_RESULT_NO_ERROR; - yaffs_ecc_result ecc_result = YAFFS_ECC_RESULT_NO_ERROR; - - if (pt->t.seq_number != 0xFFFFFFFF && - tagsECC){ + if (pt->t.seq_number != 0xffffffff && tags_ecc) { /* Chunk is in use and we need to do ECC */ - - yaffs_ECCOther ecc; + + struct yaffs_ecc_other 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); + sizeof(struct yaffs_packed_tags2_tags_only), + &ecc); + result = + yaffs_ecc_correct_other((unsigned char *)&pt->t, + sizeof(struct yaffs_packed_tags2_tags_only), + &pt->ecc, &ecc); switch (result) { - case 0: - ecc_result = YAFFS_ECC_RESULT_NO_ERROR; - break; - case 1: - ecc_result = YAFFS_ECC_RESULT_FIXED; - break; - case -1: - ecc_result = YAFFS_ECC_RESULT_UNFIXED; - break; - default: - ecc_result = YAFFS_ECC_RESULT_UNKNOWN; + case 0: + ecc_result = YAFFS_ECC_RESULT_NO_ERROR; + break; + case 1: + ecc_result = YAFFS_ECC_RESULT_FIXED; + break; + case -1: + ecc_result = YAFFS_ECC_RESULT_UNFIXED; + break; + default: + ecc_result = YAFFS_ECC_RESULT_UNKNOWN; } } - - yaffs_unpack_tags2tags_part(t, &pt->t); + yaffs_unpack_tags2_tags_only(t, &pt->t); t->ecc_result = ecc_result; - yaffs_DumpPackedTags2(pt); - yaffs_DumpTags2(t); + yaffs_dump_packed_tags2(pt); + yaffs_dump_tags2(t); } - diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_packedtags2.h b/target/linux/generic/files/fs/yaffs2/yaffs_packedtags2.h index 70bd3c9606..675e719460 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) 2002-2010 Aleph One Ltd. + * Copyright (C) 2002-2011 Aleph One Ltd. * for Toby Churchill Ltd and Brightstar Engineering * * Created by Charles Manning <charles@aleph1.co.uk> @@ -21,23 +21,27 @@ #include "yaffs_guts.h" #include "yaffs_ecc.h" -typedef struct { +struct yaffs_packed_tags2_tags_only { unsigned seq_number; unsigned obj_id; unsigned chunk_id; unsigned n_bytes; -} yaffs_PackedTags2TagsPart; +}; -typedef struct { - yaffs_PackedTags2TagsPart t; - yaffs_ECCOther ecc; -} yaffs_PackedTags2; +struct yaffs_packed_tags2 { + struct yaffs_packed_tags2_tags_only t; + struct yaffs_ecc_other ecc; +}; /* Full packed tags with ECC, used for oob tags */ -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); +void yaffs_pack_tags2(struct yaffs_packed_tags2 *pt, + const struct yaffs_ext_tags *t, int tags_ecc); +void yaffs_unpack_tags2(struct yaffs_ext_tags *t, struct yaffs_packed_tags2 *pt, + int tags_ecc); /* Only the tags part (no ECC for use with inband tags */ -void yaffs_PackTags2TagsPart(yaffs_PackedTags2TagsPart *pt, const yaffs_ext_tags *t); -void yaffs_unpack_tags2tags_part(yaffs_ext_tags *t, yaffs_PackedTags2TagsPart *pt); +void yaffs_pack_tags2_tags_only(struct yaffs_packed_tags2_tags_only *pt, + const struct yaffs_ext_tags *t); +void yaffs_unpack_tags2_tags_only(struct yaffs_ext_tags *t, + struct yaffs_packed_tags2_tags_only *pt); #endif diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_qsort.c b/target/linux/generic/files/fs/yaffs2/yaffs_qsort.c deleted file mode 100644 index 187519fbdb..0000000000 --- a/target/linux/generic/files/fs/yaffs2/yaffs_qsort.c +++ /dev/null @@ -1,163 +0,0 @@ -/* - * Copyright (c) 1992, 1993 - * The Regents of the University of California. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. Neither the name of the University nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - */ - -#include "yportenv.h" -/* #include <linux/string.h> */ - -/* - * Qsort routine from Bentley & McIlroy's "Engineering a Sort Function". - */ -#define swapcode(TYPE, parmi, parmj, n) do { \ - long i = (n) / sizeof (TYPE); \ - register TYPE *pi = (TYPE *) (parmi); \ - register TYPE *pj = (TYPE *) (parmj); \ - do { \ - register TYPE t = *pi; \ - *pi++ = *pj; \ - *pj++ = t; \ - } while (--i > 0); \ -} while (0) - -#define SWAPINIT(a, es) swaptype = ((char *)a - (char *)0) % sizeof(long) || \ - es % sizeof(long) ? 2 : es == sizeof(long) ? 0 : 1; - -static __inline void -swapfunc(char *a, char *b, int n, int swaptype) -{ - if (swaptype <= 1) - swapcode(long, a, b, n); - else - swapcode(char, a, b, n); -} - -#define yswap(a, b) do { \ - if (swaptype == 0) { \ - long t = *(long *)(a); \ - *(long *)(a) = *(long *)(b); \ - *(long *)(b) = t; \ - } else \ - swapfunc(a, b, es, swaptype); \ -} while (0) - -#define vecswap(a, b, n) if ((n) > 0) swapfunc(a, b, n, swaptype) - -static __inline char * -med3(char *a, char *b, char *c, int (*cmp)(const void *, const void *)) -{ - return cmp(a, b) < 0 ? - (cmp(b, c) < 0 ? b : (cmp(a, c) < 0 ? c : a)) - : (cmp(b, c) > 0 ? b : (cmp(a, c) < 0 ? a : c)); -} - -#ifndef min -#define min(a, b) (((a) < (b)) ? (a) : (b)) -#endif - -void -yaffs_qsort(void *aa, size_t n, size_t es, - int (*cmp)(const void *, const void *)) -{ - char *pa, *pb, *pc, *pd, *pl, *pm, *pn; - int d, r, swaptype, swap_cnt; - register char *a = aa; - -loop: SWAPINIT(a, es); - swap_cnt = 0; - if (n < 7) { - for (pm = (char *)a + es; pm < (char *) a + n * es; pm += es) - for (pl = pm; pl > (char *) a && cmp(pl - es, pl) > 0; - pl -= es) - yswap(pl, pl - es); - return; - } - pm = (char *)a + (n / 2) * es; - if (n > 7) { - pl = (char *)a; - pn = (char *)a + (n - 1) * es; - if (n > 40) { - d = (n / 8) * es; - pl = med3(pl, pl + d, pl + 2 * d, cmp); - pm = med3(pm - d, pm, pm + d, cmp); - pn = med3(pn - 2 * d, pn - d, pn, cmp); - } - pm = med3(pl, pm, pn, cmp); - } - yswap(a, pm); - pa = pb = (char *)a + es; - - pc = pd = (char *)a + (n - 1) * es; - for (;;) { - while (pb <= pc && (r = cmp(pb, a)) <= 0) { - if (r == 0) { - swap_cnt = 1; - yswap(pa, pb); - pa += es; - } - pb += es; - } - while (pb <= pc && (r = cmp(pc, a)) >= 0) { - if (r == 0) { - swap_cnt = 1; - yswap(pc, pd); - pd -= es; - } - pc -= es; - } - if (pb > pc) - break; - yswap(pb, pc); - swap_cnt = 1; - pb += es; - pc -= es; - } - if (swap_cnt == 0) { /* Switch to insertion sort */ - for (pm = (char *) a + es; pm < (char *) a + n * es; pm += es) - for (pl = pm; pl > (char *) a && cmp(pl - es, pl) > 0; - pl -= es) - yswap(pl, pl - es); - return; - } - - pn = (char *)a + n * es; - r = min(pa - (char *)a, pb - pa); - vecswap(a, pb - r, r); - r = min((long)(pd - pc), (long)(pn - pd - es)); - vecswap(pb, pn - r, r); - r = pb - pa; - if (r > es) - yaffs_qsort(a, r / es, es, cmp); - r = pd - pc; - if (r > es) { - /* Iterate rather than recurse to save stack space */ - a = pn - r; - n = r / es; - goto loop; - } -/* yaffs_qsort(pn - r, r / es, es, cmp);*/ -} diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_qsort.h b/target/linux/generic/files/fs/yaffs2/yaffs_qsort.h deleted file mode 100644 index 4a4981b3f9..0000000000 --- a/target/linux/generic/files/fs/yaffs2/yaffs_qsort.h +++ /dev/null @@ -1,34 +0,0 @@ -/* - * 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_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_summary.c b/target/linux/generic/files/fs/yaffs2/yaffs_summary.c new file mode 100644 index 0000000000..6f3c7839fa --- /dev/null +++ b/target/linux/generic/files/fs/yaffs2/yaffs_summary.c @@ -0,0 +1,313 @@ +/* + * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. + * + * Copyright (C) 2002-2011 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. + */ + +/* Summaries write the useful part of the tags for the chunks in a block into an + * an array which is written to the last n chunks of the block. + * Reading the summaries gives all the tags for the block in one read. Much + * faster. + * + * Chunks holding summaries are marked with tags making it look like + * they are part of a fake file. + * + * The summary could also be used during gc. + * + */ + +#include "yaffs_summary.h" +#include "yaffs_packedtags2.h" +#include "yaffs_nand.h" +#include "yaffs_getblockinfo.h" +#include "yaffs_bitmap.h" + +/* + * The summary is built up in an array of summary tags. + * This gets written to the last one or two (maybe more) chunks in a block. + * A summary header is written as the first part of each chunk of summary data. + * The summary header must match or the summary is rejected. + */ + +/* Summary tags don't need the sequence number because that is redundant. */ +struct yaffs_summary_tags { + unsigned obj_id; + unsigned chunk_id; + unsigned n_bytes; +}; + +/* Summary header */ +struct yaffs_summary_header { + unsigned version; /* Must match current version */ + unsigned block; /* Must be this block */ + unsigned seq; /* Must be this sequence number */ + unsigned sum; /* Just add up all the bytes in the tags */ +}; + + +static void yaffs_summary_clear(struct yaffs_dev *dev) +{ + if (!dev->sum_tags) + return; + memset(dev->sum_tags, 0, dev->chunks_per_summary * + sizeof(struct yaffs_summary_tags)); +} + + +void yaffs_summary_deinit(struct yaffs_dev *dev) +{ + kfree(dev->sum_tags); + dev->sum_tags = NULL; + kfree(dev->gc_sum_tags); + dev->gc_sum_tags = NULL; + dev->chunks_per_summary = 0; +} + +int yaffs_summary_init(struct yaffs_dev *dev) +{ + int sum_bytes; + int chunks_used; /* Number of chunks used by summary */ + int sum_tags_bytes; + + sum_bytes = dev->param.chunks_per_block * + sizeof(struct yaffs_summary_tags); + + chunks_used = (sum_bytes + dev->data_bytes_per_chunk - 1)/ + (dev->data_bytes_per_chunk - + sizeof(struct yaffs_summary_header)); + + dev->chunks_per_summary = dev->param.chunks_per_block - chunks_used; + sum_tags_bytes = sizeof(struct yaffs_summary_tags) * + dev->chunks_per_summary; + dev->sum_tags = kmalloc(sum_tags_bytes, GFP_NOFS); + dev->gc_sum_tags = kmalloc(sum_tags_bytes, GFP_NOFS); + if (!dev->sum_tags || !dev->gc_sum_tags) { + yaffs_summary_deinit(dev); + return YAFFS_FAIL; + } + + yaffs_summary_clear(dev); + + return YAFFS_OK; +} + +static unsigned yaffs_summary_sum(struct yaffs_dev *dev) +{ + u8 *sum_buffer = (u8 *)dev->sum_tags; + int i; + unsigned sum = 0; + + i = sizeof(struct yaffs_summary_tags) * + dev->chunks_per_summary; + while (i > 0) { + sum += *sum_buffer; + sum_buffer++; + i--; + } + + return sum; +} + +static int yaffs_summary_write(struct yaffs_dev *dev, int blk) +{ + struct yaffs_ext_tags tags; + u8 *buffer; + u8 *sum_buffer = (u8 *)dev->sum_tags; + int n_bytes; + int chunk_in_nand; + int chunk_in_block; + int result; + int this_tx; + struct yaffs_summary_header hdr; + int sum_bytes_per_chunk = dev->data_bytes_per_chunk - sizeof(hdr); + struct yaffs_block_info *bi = yaffs_get_block_info(dev, blk); + + buffer = yaffs_get_temp_buffer(dev); + n_bytes = sizeof(struct yaffs_summary_tags) * + dev->chunks_per_summary; + memset(&tags, 0, sizeof(struct yaffs_ext_tags)); + tags.obj_id = YAFFS_OBJECTID_SUMMARY; + tags.chunk_id = 1; + chunk_in_block = dev->chunks_per_summary; + chunk_in_nand = dev->alloc_block * dev->param.chunks_per_block + + dev->chunks_per_summary; + hdr.version = YAFFS_SUMMARY_VERSION; + hdr.block = blk; + hdr.seq = bi->seq_number; + hdr.sum = yaffs_summary_sum(dev); + + do { + this_tx = n_bytes; + if (this_tx > sum_bytes_per_chunk) + this_tx = sum_bytes_per_chunk; + memcpy(buffer, &hdr, sizeof(hdr)); + memcpy(buffer + sizeof(hdr), sum_buffer, this_tx); + tags.n_bytes = this_tx + sizeof(hdr); + result = yaffs_wr_chunk_tags_nand(dev, chunk_in_nand, + buffer, &tags); + + if (result != YAFFS_OK) + break; + yaffs_set_chunk_bit(dev, blk, chunk_in_block); + bi->pages_in_use++; + dev->n_free_chunks--; + + n_bytes -= this_tx; + sum_buffer += this_tx; + chunk_in_nand++; + chunk_in_block++; + tags.chunk_id++; + } while (result == YAFFS_OK && n_bytes > 0); + yaffs_release_temp_buffer(dev, buffer); + + + if (result == YAFFS_OK) + bi->has_summary = 1; + + + return result; +} + +int yaffs_summary_read(struct yaffs_dev *dev, + struct yaffs_summary_tags *st, + int blk) +{ + struct yaffs_ext_tags tags; + u8 *buffer; + u8 *sum_buffer = (u8 *)st; + int n_bytes; + int chunk_id; + int chunk_in_nand; + int chunk_in_block; + int result; + int this_tx; + struct yaffs_summary_header hdr; + struct yaffs_block_info *bi = yaffs_get_block_info(dev, blk); + int sum_bytes_per_chunk = dev->data_bytes_per_chunk - sizeof(hdr); + int sum_tags_bytes; + + sum_tags_bytes = sizeof(struct yaffs_summary_tags) * + dev->chunks_per_summary; + buffer = yaffs_get_temp_buffer(dev); + n_bytes = sizeof(struct yaffs_summary_tags) * dev->chunks_per_summary; + chunk_in_block = dev->chunks_per_summary; + chunk_in_nand = blk * dev->param.chunks_per_block + + dev->chunks_per_summary; + chunk_id = 1; + do { + this_tx = n_bytes; + if (this_tx > sum_bytes_per_chunk) + this_tx = sum_bytes_per_chunk; + result = yaffs_rd_chunk_tags_nand(dev, chunk_in_nand, + buffer, &tags); + + if (tags.chunk_id != chunk_id || + tags.obj_id != YAFFS_OBJECTID_SUMMARY || + tags.chunk_used == 0 || + tags.ecc_result > YAFFS_ECC_RESULT_FIXED || + tags.n_bytes != (this_tx + sizeof(hdr))) + result = YAFFS_FAIL; + if (result != YAFFS_OK) + break; + + if (st == dev->sum_tags) { + /* If we're scanning then update the block info */ + yaffs_set_chunk_bit(dev, blk, chunk_in_block); + bi->pages_in_use++; + } + memcpy(&hdr, buffer, sizeof(hdr)); + memcpy(sum_buffer, buffer + sizeof(hdr), this_tx); + n_bytes -= this_tx; + sum_buffer += this_tx; + chunk_in_nand++; + chunk_in_block++; + chunk_id++; + } while (result == YAFFS_OK && n_bytes > 0); + yaffs_release_temp_buffer(dev, buffer); + + if (result == YAFFS_OK) { + /* Verify header */ + if (hdr.version != YAFFS_SUMMARY_VERSION || + hdr.block != blk || + hdr.seq != bi->seq_number || + hdr.sum != yaffs_summary_sum(dev)) + result = YAFFS_FAIL; + } + + if (st == dev->sum_tags && result == YAFFS_OK) + bi->has_summary = 1; + + return result; +} + +int yaffs_summary_add(struct yaffs_dev *dev, + struct yaffs_ext_tags *tags, + int chunk_in_nand) +{ + struct yaffs_packed_tags2_tags_only tags_only; + struct yaffs_summary_tags *sum_tags; + int block_in_nand = chunk_in_nand / dev->param.chunks_per_block; + int chunk_in_block = chunk_in_nand % dev->param.chunks_per_block; + + if (!dev->sum_tags) + return YAFFS_OK; + + if (chunk_in_block >= 0 && chunk_in_block < dev->chunks_per_summary) { + yaffs_pack_tags2_tags_only(&tags_only, tags); + sum_tags = &dev->sum_tags[chunk_in_block]; + sum_tags->chunk_id = tags_only.chunk_id; + sum_tags->n_bytes = tags_only.n_bytes; + sum_tags->obj_id = tags_only.obj_id; + + if (chunk_in_block == dev->chunks_per_summary - 1) { + /* Time to write out the summary */ + yaffs_summary_write(dev, block_in_nand); + yaffs_summary_clear(dev); + yaffs_skip_rest_of_block(dev); + } + } + return YAFFS_OK; +} + +int yaffs_summary_fetch(struct yaffs_dev *dev, + struct yaffs_ext_tags *tags, + int chunk_in_block) +{ + struct yaffs_packed_tags2_tags_only tags_only; + struct yaffs_summary_tags *sum_tags; + if (chunk_in_block >= 0 && chunk_in_block < dev->chunks_per_summary) { + sum_tags = &dev->sum_tags[chunk_in_block]; + tags_only.chunk_id = sum_tags->chunk_id; + tags_only.n_bytes = sum_tags->n_bytes; + tags_only.obj_id = sum_tags->obj_id; + yaffs_unpack_tags2_tags_only(tags, &tags_only); + return YAFFS_OK; + } + return YAFFS_FAIL; +} + +void yaffs_summary_gc(struct yaffs_dev *dev, int blk) +{ + struct yaffs_block_info *bi = yaffs_get_block_info(dev, blk); + int i; + + if (!bi->has_summary) + return; + + for (i = dev->chunks_per_summary; + i < dev->param.chunks_per_block; + i++) { + if (yaffs_check_chunk_bit(dev, blk, i)) { + yaffs_clear_chunk_bit(dev, blk, i); + bi->pages_in_use--; + dev->n_free_chunks++; + } + } +} diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_summary.h b/target/linux/generic/files/fs/yaffs2/yaffs_summary.h new file mode 100644 index 0000000000..be141d0733 --- /dev/null +++ b/target/linux/generic/files/fs/yaffs2/yaffs_summary.h @@ -0,0 +1,37 @@ +/* + * YAFFS: Yet another Flash File System . A NAND-flash specific file system. + * + * Copyright (C) 2002-2011 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_SUMMARY_H__ +#define __YAFFS_SUMMARY_H__ + +#include "yaffs_packedtags2.h" + + +int yaffs_summary_init(struct yaffs_dev *dev); +void yaffs_summary_deinit(struct yaffs_dev *dev); + +int yaffs_summary_add(struct yaffs_dev *dev, + struct yaffs_ext_tags *tags, + int chunk_in_block); +int yaffs_summary_fetch(struct yaffs_dev *dev, + struct yaffs_ext_tags *tags, + int chunk_in_block); +int yaffs_summary_read(struct yaffs_dev *dev, + struct yaffs_summary_tags *st, + int blk); +void yaffs_summary_gc(struct yaffs_dev *dev, int blk); + + +#endif diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_tagscompat.c b/target/linux/generic/files/fs/yaffs2/yaffs_tagscompat.c index c04a2fb3bd..092430becc 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) 2002-2010 Aleph One Ltd. + * Copyright (C) 2002-2011 Aleph One Ltd. * for Toby Churchill Ltd and Brightstar Engineering * * Created by Charles Manning <charles@aleph1.co.uk> @@ -17,56 +17,16 @@ #include "yaffs_getblockinfo.h" #include "yaffs_trace.h" -static void yaffs_handle_rd_data_error(yaffs_dev_t *dev, int nand_chunk); -#ifdef NOTYET -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_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_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, - 2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6, - 1, 2, 2, 3, 2, 3, 3, 4, 2, 3, 3, 4, 3, 4, 4, 5, - 2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6, - 2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6, - 3, 4, 4, 5, 4, 5, 5, 6, 4, 5, 5, 6, 5, 6, 6, 7, - 1, 2, 2, 3, 2, 3, 3, 4, 2, 3, 3, 4, 3, 4, 4, 5, - 2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6, - 2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6, - 3, 4, 4, 5, 4, 5, 5, 6, 4, 5, 5, 6, 5, 6, 6, 7, - 2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6, - 3, 4, 4, 5, 4, 5, 5, 6, 4, 5, 5, 6, 5, 6, 6, 7, - 3, 4, 4, 5, 4, 5, 5, 6, 4, 5, 5, 6, 5, 6, 6, 7, - 4, 5, 5, 6, 5, 6, 6, 7, 5, 6, 6, 7, 6, 7, 7, 8 -}; - -int yaffs_count_bits(__u8 x) -{ - int retVal; - retVal = yaffs_count_bits_table[x]; - return retVal; -} +static void yaffs_handle_rd_data_error(struct yaffs_dev *dev, int nand_chunk); + /********** Tags ECC calculations *********/ -void yaffs_calc_ecc(const __u8 *data, yaffs_spare *spare) -{ - yaffs_ecc_cacl(data, spare->ecc1); - yaffs_ecc_cacl(&data[256], spare->ecc2); -} -void yaffs_calc_tags_ecc(yaffs_tags_t *tags) +void yaffs_calc_tags_ecc(struct yaffs_tags *tags) { /* Calculate an ecc */ - - unsigned char *b = ((yaffs_tags_union_t *) tags)->as_bytes; + unsigned char *b = ((union yaffs_tags_union *)tags)->as_bytes; unsigned i, j; unsigned ecc = 0; unsigned bit = 0; @@ -80,12 +40,10 @@ void yaffs_calc_tags_ecc(yaffs_tags_t *tags) ecc ^= bit; } } - tags->ecc = ecc; - } -int yaffs_check_tags_ecc(yaffs_tags_t *tags) +int yaffs_check_tags_ecc(struct yaffs_tags *tags) { unsigned ecc = tags->ecc; @@ -95,7 +53,7 @@ int yaffs_check_tags_ecc(yaffs_tags_t *tags) if (ecc && ecc <= 64) { /* TODO: Handle the failure better. Retire? */ - unsigned char *b = ((yaffs_tags_union_t *) tags)->as_bytes; + unsigned char *b = ((union yaffs_tags_union *)tags)->as_bytes; ecc--; @@ -110,233 +68,164 @@ int yaffs_check_tags_ecc(yaffs_tags_t *tags) /* TODO Need to do somethiong here */ return -1; /* unrecovered error */ } - return 0; } /********** Tags **********/ -static void yaffs_load_tags_to_spare(yaffs_spare *sparePtr, - yaffs_tags_t *tagsPtr) +static void yaffs_load_tags_to_spare(struct yaffs_spare *spare_ptr, + struct yaffs_tags *tags_ptr) { - 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]; + union yaffs_tags_union *tu = (union yaffs_tags_union *)tags_ptr; + + yaffs_calc_tags_ecc(tags_ptr); + + spare_ptr->tb0 = tu->as_bytes[0]; + spare_ptr->tb1 = tu->as_bytes[1]; + spare_ptr->tb2 = tu->as_bytes[2]; + spare_ptr->tb3 = tu->as_bytes[3]; + spare_ptr->tb4 = tu->as_bytes[4]; + spare_ptr->tb5 = tu->as_bytes[5]; + spare_ptr->tb6 = tu->as_bytes[6]; + spare_ptr->tb7 = tu->as_bytes[7]; } -static void yaffs_get_tags_from_spare(yaffs_dev_t *dev, yaffs_spare *sparePtr, - yaffs_tags_t *tagsPtr) +static void yaffs_get_tags_from_spare(struct yaffs_dev *dev, + struct yaffs_spare *spare_ptr, + struct yaffs_tags *tags_ptr) { - yaffs_tags_union_t *tu = (yaffs_tags_union_t *) tagsPtr; + union yaffs_tags_union *tu = (union yaffs_tags_union *)tags_ptr; int result; - 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; + tu->as_bytes[0] = spare_ptr->tb0; + tu->as_bytes[1] = spare_ptr->tb1; + tu->as_bytes[2] = spare_ptr->tb2; + tu->as_bytes[3] = spare_ptr->tb3; + tu->as_bytes[4] = spare_ptr->tb4; + tu->as_bytes[5] = spare_ptr->tb5; + tu->as_bytes[6] = spare_ptr->tb6; + tu->as_bytes[7] = spare_ptr->tb7; - result = yaffs_check_tags_ecc(tagsPtr); + result = yaffs_check_tags_ecc(tags_ptr); if (result > 0) dev->n_tags_ecc_fixed++; else if (result < 0) dev->n_tags_ecc_unfixed++; } -static void yaffs_spare_init(yaffs_spare *spare) +static void yaffs_spare_init(struct yaffs_spare *spare) { - memset(spare, 0xFF, sizeof(yaffs_spare)); + memset(spare, 0xff, sizeof(struct yaffs_spare)); } -static int yaffs_wr_nand(struct yaffs_dev_s *dev, - int nand_chunk, const __u8 *data, - yaffs_spare *spare) +static int yaffs_wr_nand(struct yaffs_dev *dev, + int nand_chunk, const u8 *data, + struct yaffs_spare *spare) { - if (nand_chunk < dev->param.start_block * dev->param.chunks_per_block) { - T(YAFFS_TRACE_ERROR, - (TSTR("**>> yaffs chunk %d is not valid" TENDSTR), - nand_chunk)); - return YAFFS_FAIL; - } + int data_size = dev->data_bytes_per_chunk; - return dev->param.write_chunk_fn(dev, nand_chunk, data, spare); + return dev->drv.drv_write_chunk_fn(dev, nand_chunk, + data, data_size, + (u8 *) spare, sizeof(*spare)); } -static int yaffs_rd_chunk_nand(struct yaffs_dev_s *dev, - int nand_chunk, - __u8 *data, - yaffs_spare *spare, - yaffs_ecc_result *ecc_result, - int doErrorCorrection) +static int yaffs_rd_chunk_nand(struct yaffs_dev *dev, + int nand_chunk, + u8 *data, + struct yaffs_spare *spare, + enum yaffs_ecc_result *ecc_result, + int correct_errors) { - int retVal; - yaffs_spare localSpare; - - if (!spare && data) { + int ret_val; + struct yaffs_spare local_spare; + int data_size; + int spare_size; + int ecc_result1, ecc_result2; + u8 calc_ecc[3]; + + if (!spare) { /* If we don't have a real spare, then we use a local one. */ /* Need this for the calculation of the ecc */ - spare = &localSpare; + spare = &local_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 ecc_result1, ecc_result2; - __u8 calcEcc[3]; - - 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 (ecc_result1 > 0) { - T(YAFFS_TRACE_ERROR, - (TSTR - ("**>>yaffs ecc error fix performed on chunk %d: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), nand_chunk)); - dev->n_ecc_unfixed++; - } - - if (ecc_result2 > 0) { - T(YAFFS_TRACE_ERROR, - (TSTR - ("**>>yaffs ecc error fix performed on chunk %d:1" - 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), nand_chunk)); - dev->n_ecc_unfixed++; - } - - if (ecc_result1 || ecc_result2) { - /* We had a data problem on this page */ - yaffs_handle_rd_data_error(dev, nand_chunk); - } - - 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 - *ecc_result = YAFFS_ECC_RESULT_NO_ERROR; - } - } else { - /* Must allocate enough memory for spare+2*sizeof(int) */ - /* for ecc results from device. */ - struct yaffs_nand_spare nspare; - - memset(&nspare, 0, sizeof(nspare)); - - 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), nand_chunk)); - } else if (nspare.eccres1 < 0) { - T(YAFFS_TRACE_ERROR, - (TSTR - ("**>>mtd ecc error unfixed on chunk %d:0" - TENDSTR), nand_chunk)); - } - - if (nspare.eccres2 > 0) { - T(YAFFS_TRACE_ERROR, - (TSTR - ("**>>mtd ecc error fix performed on chunk %d:1" - TENDSTR), nand_chunk)); - } else if (nspare.eccres2 < 0) { - T(YAFFS_TRACE_ERROR, - (TSTR - ("**>>mtd ecc error unfixed on chunk %d:1" - TENDSTR), nand_chunk)); - } - - if (nspare.eccres1 || nspare.eccres2) { - /* We had a data problem on this page */ - yaffs_handle_rd_data_error(dev, nand_chunk); - } - - if (nspare.eccres1 < 0 || nspare.eccres2 < 0) - *ecc_result = YAFFS_ECC_RESULT_UNFIXED; - else if (nspare.eccres1 > 0 || nspare.eccres2 > 0) - *ecc_result = YAFFS_ECC_RESULT_FIXED; - else - *ecc_result = YAFFS_ECC_RESULT_NO_ERROR; - - } + data_size = dev->data_bytes_per_chunk; + spare_size = sizeof(struct yaffs_spare); + + if (dev->param.use_nand_ecc) + return dev->drv.drv_read_chunk_fn(dev, nand_chunk, + data, data_size, + (u8 *) spare, spare_size, + ecc_result); + + + /* Handle the ECC at this level. */ + + ret_val = dev->drv.drv_read_chunk_fn(dev, nand_chunk, + data, data_size, + (u8 *)spare, spare_size, + NULL); + if (!data || !correct_errors) + return ret_val; + + /* Do ECC correction if needed. */ + yaffs_ecc_calc(data, calc_ecc); + ecc_result1 = yaffs_ecc_correct(data, spare->ecc1, calc_ecc); + yaffs_ecc_calc(&data[256], calc_ecc); + ecc_result2 = yaffs_ecc_correct(&data[256], spare->ecc2, calc_ecc); + + if (ecc_result1 > 0) { + yaffs_trace(YAFFS_TRACE_ERROR, + "**>>yaffs ecc error fix performed on chunk %d:0", + nand_chunk); + dev->n_ecc_fixed++; + } else if (ecc_result1 < 0) { + yaffs_trace(YAFFS_TRACE_ERROR, + "**>>yaffs ecc error unfixed on chunk %d:0", + nand_chunk); + dev->n_ecc_unfixed++; } - return retVal; -} -#ifdef NOTYET -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->param.use_nand_ecc == true; */ - static __u8 spare[sizeof(struct yaffs_nand_spare)]; - - dev->param.read_chunk_fn(dev, nand_chunk, data, (yaffs_spare *) spare); - - if (!init) { - memset(cmpbuf, 0xff, YAFFS_BYTES_PER_CHUNK); - init = 1; + if (ecc_result2 > 0) { + yaffs_trace(YAFFS_TRACE_ERROR, + "**>>yaffs ecc error fix performed on chunk %d:1", + nand_chunk); + dev->n_ecc_fixed++; + } else if (ecc_result2 < 0) { + yaffs_trace(YAFFS_TRACE_ERROR, + "**>>yaffs ecc error unfixed on chunk %d:1", + nand_chunk); + dev->n_ecc_unfixed++; } - if (memcmp(cmpbuf, data, YAFFS_BYTES_PER_CHUNK)) - return YAFFS_FAIL; - if (memcmp(cmpbuf, spare, 16)) - return YAFFS_FAIL; + if (ecc_result1 || ecc_result2) { + /* We had a data problem on this page */ + yaffs_handle_rd_data_error(dev, nand_chunk); + } - return YAFFS_OK; + 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 + *ecc_result = YAFFS_ECC_RESULT_NO_ERROR; + return ret_val; } -#endif /* * Functions for robustisizing */ -static void yaffs_handle_rd_data_error(yaffs_dev_t *dev, int nand_chunk) +static void yaffs_handle_rd_data_error(struct yaffs_dev *dev, int nand_chunk) { int flash_block = nand_chunk / dev->param.chunks_per_block; /* Mark the block for retirement */ - 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), flash_block)); + yaffs_get_block_info(dev, flash_block + dev->block_offset)-> + needs_retiring = 1; + yaffs_trace(YAFFS_TRACE_ERROR | YAFFS_TRACE_BAD_BLOCKS, + "**>>Block %d marked for retirement", + flash_block); /* TODO: * Just do a garbage collection on the affected block @@ -345,195 +234,148 @@ static void yaffs_handle_rd_data_error(yaffs_dev_t *dev, int nand_chunk) */ } -#ifdef NOTYET -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_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) -{ - int flash_block = nand_chunk / dev->param.chunks_per_block; - - /* Mark the block for retirement */ - yaffs_get_block_info(dev, flash_block)->needs_retiring = 1; - /* Delete the chunk */ - yaffs_chunk_del(dev, nand_chunk, 1, __LINE__); -} - -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->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] || - s0->ecc2[0] != s1->ecc2[0] || - s0->ecc2[1] != s1->ecc2[1] || s0->ecc2[2] != s1->ecc2[2]) { - return 0; - } - - return 1; -} -#endif /* NOTYET */ - -int yaffs_tags_compat_wr(yaffs_dev_t *dev, - int nand_chunk, - const __u8 *data, - const yaffs_ext_tags *eTags) +static int yaffs_tags_compat_wr(struct yaffs_dev *dev, + int nand_chunk, + const u8 *data, const struct yaffs_ext_tags *ext_tags) { - yaffs_spare spare; - yaffs_tags_t tags; + struct yaffs_spare spare; + struct yaffs_tags tags; yaffs_spare_init(&spare); - if (eTags->is_deleted) + if (ext_tags->is_deleted) spare.page_status = 0; else { - tags.obj_id = eTags->obj_id; - tags.chunk_id = eTags->chunk_id; + tags.obj_id = ext_tags->obj_id; + tags.chunk_id = ext_tags->chunk_id; - tags.n_bytes_lsb = eTags->n_bytes & 0x3ff; + tags.n_bytes_lsb = ext_tags->n_bytes & (1024 - 1); if (dev->data_bytes_per_chunk >= 1024) - tags.n_bytes_msb = (eTags->n_bytes >> 10) & 3; + tags.n_bytes_msb = (ext_tags->n_bytes >> 10) & 3; else tags.n_bytes_msb = 3; + tags.serial_number = ext_tags->serial_number; - tags.serial_number = eTags->serial_number; - - if (!dev->param.use_nand_ecc && data) - yaffs_calc_ecc(data, &spare); + if (!dev->param.use_nand_ecc && data) { + yaffs_ecc_calc(data, spare.ecc1); + yaffs_ecc_calc(&data[256], spare.ecc2); + } yaffs_load_tags_to_spare(&spare, &tags); - } - return yaffs_wr_nand(dev, nand_chunk, data, &spare); } -int yaffs_tags_compat_rd(yaffs_dev_t *dev, - int nand_chunk, - __u8 *data, - yaffs_ext_tags *eTags) +static int yaffs_tags_compat_rd(struct yaffs_dev *dev, + int nand_chunk, + u8 *data, struct yaffs_ext_tags *ext_tags) { - - yaffs_spare spare; - yaffs_tags_t tags; - yaffs_ecc_result ecc_result = YAFFS_ECC_RESULT_UNKNOWN; - - static yaffs_spare spareFF; + struct yaffs_spare spare; + struct yaffs_tags tags; + enum yaffs_ecc_result ecc_result = YAFFS_ECC_RESULT_UNKNOWN; + static struct yaffs_spare spare_ff; static int init; + int deleted; if (!init) { - memset(&spareFF, 0xFF, sizeof(spareFF)); + memset(&spare_ff, 0xff, sizeof(spare_ff)); init = 1; } - if (yaffs_rd_chunk_nand - (dev, nand_chunk, data, &spare, &ecc_result, 1)) { - /* eTags may be NULL */ - if (eTags) { - - int deleted = - (yaffs_count_bits(spare.page_status) < 7) ? 1 : 0; + if (!yaffs_rd_chunk_nand(dev, nand_chunk, + data, &spare, &ecc_result, 1)) + return YAFFS_FAIL; - 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->chunk_used = - (memcmp(&spareFF, &spare, sizeof(spareFF)) != - 0) ? 1 : 0; + /* ext_tags may be NULL */ + if (!ext_tags) + return YAFFS_OK; - if (eTags->chunk_used) { - yaffs_get_tags_from_spare(dev, &spare, &tags); + deleted = (hweight8(spare.page_status) < 7) ? 1 : 0; - eTags->obj_id = tags.obj_id; - eTags->chunk_id = tags.chunk_id; - eTags->n_bytes = tags.n_bytes_lsb; + ext_tags->is_deleted = deleted; + ext_tags->ecc_result = ecc_result; + ext_tags->block_bad = 0; /* We're reading it */ + /* therefore it is not a bad block */ + ext_tags->chunk_used = + memcmp(&spare_ff, &spare, sizeof(spare_ff)) ? 1 : 0; - if (dev->data_bytes_per_chunk >= 1024) - eTags->n_bytes |= (((unsigned) tags.n_bytes_msb) << 10); + if (ext_tags->chunk_used) { + yaffs_get_tags_from_spare(dev, &spare, &tags); + ext_tags->obj_id = tags.obj_id; + ext_tags->chunk_id = tags.chunk_id; + ext_tags->n_bytes = tags.n_bytes_lsb; - eTags->serial_number = tags.serial_number; - } - } + if (dev->data_bytes_per_chunk >= 1024) + ext_tags->n_bytes |= + (((unsigned)tags.n_bytes_msb) << 10); - return YAFFS_OK; - } else { - return YAFFS_FAIL; + ext_tags->serial_number = tags.serial_number; } + + return YAFFS_OK; } -int yaffs_tags_compat_mark_bad(struct yaffs_dev_s *dev, - int flash_block) +static int yaffs_tags_compat_mark_bad(struct yaffs_dev *dev, int flash_block) { + struct yaffs_spare spare; - yaffs_spare spare; - - memset(&spare, 0xff, sizeof(yaffs_spare)); + memset(&spare, 0xff, sizeof(struct yaffs_spare)); spare.block_status = 'Y'; yaffs_wr_nand(dev, flash_block * dev->param.chunks_per_block, NULL, - &spare); + &spare); yaffs_wr_nand(dev, flash_block * dev->param.chunks_per_block + 1, - NULL, &spare); + NULL, &spare); return YAFFS_OK; - } -int yaffs_tags_compat_query_block(struct yaffs_dev_s *dev, - int block_no, - yaffs_block_state_t *state, - __u32 *seq_number) +static int yaffs_tags_compat_query_block(struct yaffs_dev *dev, + int block_no, + enum yaffs_block_state *state, + u32 *seq_number) { - - yaffs_spare spare0, spare1; - static yaffs_spare spareFF; + struct yaffs_spare spare0, spare1; + static struct yaffs_spare spare_ff; static int init; - yaffs_ecc_result dummy; + enum yaffs_ecc_result dummy; if (!init) { - memset(&spareFF, 0xFF, sizeof(spareFF)); + memset(&spare_ff, 0xff, sizeof(spare_ff)); init = 1; } *seq_number = 0; - yaffs_rd_chunk_nand(dev, block_no * dev->param.chunks_per_block, NULL, - &spare0, &dummy, 1); - yaffs_rd_chunk_nand(dev, block_no * dev->param.chunks_per_block + 1, NULL, - &spare1, &dummy, 1); + /* Look for bad block markers in the first two chunks */ + yaffs_rd_chunk_nand(dev, block_no * dev->param.chunks_per_block, + NULL, &spare0, &dummy, 0); + yaffs_rd_chunk_nand(dev, block_no * dev->param.chunks_per_block + 1, + NULL, &spare1, &dummy, 0); - if (yaffs_count_bits(spare0.block_status & spare1.block_status) < 7) + if (hweight8(spare0.block_status & spare1.block_status) < 7) *state = YAFFS_BLOCK_STATE_DEAD; - else if (memcmp(&spareFF, &spare0, sizeof(spareFF)) == 0) + else if (memcmp(&spare_ff, &spare0, sizeof(spare_ff)) == 0) *state = YAFFS_BLOCK_STATE_EMPTY; else - *state = YAFFS_BLOCK_STATE_NEEDS_SCANNING; + *state = YAFFS_BLOCK_STATE_NEEDS_SCAN; return YAFFS_OK; } + +void yaffs_tags_compat_install(struct yaffs_dev *dev) +{ + if(dev->param.is_yaffs2) + return; + if(!dev->tagger.write_chunk_tags_fn) + dev->tagger.write_chunk_tags_fn = yaffs_tags_compat_wr; + if(!dev->tagger.read_chunk_tags_fn) + dev->tagger.read_chunk_tags_fn = yaffs_tags_compat_rd; + if(!dev->tagger.query_block_fn) + dev->tagger.query_block_fn = yaffs_tags_compat_query_block; + if(!dev->tagger.mark_bad_fn) + dev->tagger.mark_bad_fn = yaffs_tags_compat_mark_bad; +} diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_tagscompat.h b/target/linux/generic/files/fs/yaffs2/yaffs_tagscompat.h index 889bf5f4b7..92d298a6f5 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) 2002-2010 Aleph One Ltd. + * Copyright (C) 2002-2011 Aleph One Ltd. * for Toby Churchill Ltd and Brightstar Engineering * * Created by Charles Manning <charles@aleph1.co.uk> @@ -16,24 +16,29 @@ #ifndef __YAFFS_TAGSCOMPAT_H__ #define __YAFFS_TAGSCOMPAT_H__ + #include "yaffs_guts.h" -int yaffs_tags_compat_wr(yaffs_dev_t *dev, - int nand_chunk, - const __u8 *data, - const yaffs_ext_tags *tags); -int yaffs_tags_compat_rd(yaffs_dev_t *dev, - int nand_chunk, - __u8 *data, - 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_calc_tags_ecc(yaffs_tags_t *tags); -int yaffs_check_tags_ecc(yaffs_tags_t *tags); -int yaffs_count_bits(__u8 byte); + +#if 0 + + +int yaffs_tags_compat_wr(struct yaffs_dev *dev, + int nand_chunk, + const u8 *data, const struct yaffs_ext_tags *tags); +int yaffs_tags_compat_rd(struct yaffs_dev *dev, + int nand_chunk, + u8 *data, struct yaffs_ext_tags *tags); +int yaffs_tags_compat_mark_bad(struct yaffs_dev *dev, int block_no); +int yaffs_tags_compat_query_block(struct yaffs_dev *dev, + int block_no, + enum yaffs_block_state *state, + u32 *seq_number); + +#endif + + +void yaffs_tags_compat_install(struct yaffs_dev *dev); +void yaffs_calc_tags_ecc(struct yaffs_tags *tags); +int yaffs_check_tags_ecc(struct yaffs_tags *tags); #endif diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_tagsmarshall.c b/target/linux/generic/files/fs/yaffs2/yaffs_tagsmarshall.c new file mode 100644 index 0000000000..44a83b12ca --- /dev/null +++ b/target/linux/generic/files/fs/yaffs2/yaffs_tagsmarshall.c @@ -0,0 +1,199 @@ +/* + * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. + * + * Copyright (C) 2002-2011 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_packedtags2.h" + +static int yaffs_tags_marshall_write(struct yaffs_dev *dev, + int nand_chunk, const u8 *data, + const struct yaffs_ext_tags *tags) +{ + struct yaffs_packed_tags2 pt; + int retval; + + 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; + + yaffs_trace(YAFFS_TRACE_MTD, + "yaffs_tags_marshall_write chunk %d data %p tags %p", + nand_chunk, data, tags); + + /* For yaffs2 writing there must be both data and tags. + * If we're using inband tags, then the tags are stuffed into + * the end of the data buffer. + */ + if (!data || !tags) + BUG(); + else if (dev->param.inband_tags) { + struct yaffs_packed_tags2_tags_only *pt2tp; + pt2tp = + (struct yaffs_packed_tags2_tags_only *)(data + + dev-> + data_bytes_per_chunk); + yaffs_pack_tags2_tags_only(pt2tp, tags); + } else { + yaffs_pack_tags2(&pt, tags, !dev->param.no_tags_ecc); + } + + retval = dev->drv.drv_write_chunk_fn(dev, nand_chunk, + data, dev->param.total_bytes_per_chunk, + (dev->param.inband_tags) ? NULL : packed_tags_ptr, + (dev->param.inband_tags) ? 0 : packed_tags_size); + + return retval; +} + +static int yaffs_tags_marshall_read(struct yaffs_dev *dev, + int nand_chunk, u8 *data, + struct yaffs_ext_tags *tags) +{ + int retval = 0; + int local_data = 0; + u8 spare_buffer[100]; + enum yaffs_ecc_result ecc_result; + + struct yaffs_packed_tags2 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; + + yaffs_trace(YAFFS_TRACE_MTD, + "yaffs_tags_marshall_read chunk %d data %p tags %p", + nand_chunk, data, tags); + + if (dev->param.inband_tags) { + if (!data) { + local_data = 1; + data = yaffs_get_temp_buffer(dev); + } + } + + if (dev->param.inband_tags || (data && !tags)) + retval = dev->drv.drv_read_chunk_fn(dev, nand_chunk, + data, dev->param.total_bytes_per_chunk, + NULL, 0, + &ecc_result); + else if (tags) + retval = dev->drv.drv_read_chunk_fn(dev, nand_chunk, + data, dev->param.total_bytes_per_chunk, + spare_buffer, packed_tags_size, + &ecc_result); + else + BUG(); + + + if (dev->param.inband_tags) { + if (tags) { + struct yaffs_packed_tags2_tags_only *pt2tp; + pt2tp = + (struct yaffs_packed_tags2_tags_only *) + &data[dev->data_bytes_per_chunk]; + yaffs_unpack_tags2_tags_only(tags, pt2tp); + } + } else if (tags) { + memcpy(packed_tags_ptr, spare_buffer, packed_tags_size); + yaffs_unpack_tags2(tags, &pt, !dev->param.no_tags_ecc); + } + + if (local_data) + yaffs_release_temp_buffer(dev, data); + + if (tags && ecc_result == YAFFS_ECC_RESULT_UNFIXED) { + tags->ecc_result = YAFFS_ECC_RESULT_UNFIXED; + dev->n_ecc_unfixed++; + } + + if (tags && ecc_result == -YAFFS_ECC_RESULT_FIXED) { + if (tags->ecc_result <= YAFFS_ECC_RESULT_NO_ERROR) + tags->ecc_result = YAFFS_ECC_RESULT_FIXED; + dev->n_ecc_fixed++; + } + + if (ecc_result < YAFFS_ECC_RESULT_UNFIXED) + return YAFFS_OK; + else + return YAFFS_FAIL; +} + +static int yaffs_tags_marshall_query_block(struct yaffs_dev *dev, int block_no, + enum yaffs_block_state *state, + u32 *seq_number) +{ + int retval; + + yaffs_trace(YAFFS_TRACE_MTD, "yaffs_tags_marshall_query_block %d", + block_no); + + retval = dev->drv.drv_check_bad_fn(dev, block_no); + + if (retval== YAFFS_FAIL) { + yaffs_trace(YAFFS_TRACE_MTD, "block is bad"); + + *state = YAFFS_BLOCK_STATE_DEAD; + *seq_number = 0; + } else { + struct yaffs_ext_tags t; + + yaffs_tags_marshall_read(dev, + block_no * dev->param.chunks_per_block, + NULL, &t); + + if (t.chunk_used) { + *seq_number = t.seq_number; + *state = YAFFS_BLOCK_STATE_NEEDS_SCAN; + } else { + *seq_number = 0; + *state = YAFFS_BLOCK_STATE_EMPTY; + } + } + + yaffs_trace(YAFFS_TRACE_MTD, + "block query returns seq %d state %d", + *seq_number, *state); + + if (retval == 0) + return YAFFS_OK; + else + return YAFFS_FAIL; +} + +static int yaffs_tags_marshall_mark_bad(struct yaffs_dev *dev, int block_no) +{ + return dev->drv.drv_mark_bad_fn(dev, block_no); + +} + + +void yaffs_tags_marshall_install(struct yaffs_dev *dev) +{ + if (!dev->param.is_yaffs2) + return; + + if (!dev->tagger.write_chunk_tags_fn) + dev->tagger.write_chunk_tags_fn = yaffs_tags_marshall_write; + + if (!dev->tagger.read_chunk_tags_fn) + dev->tagger.read_chunk_tags_fn = yaffs_tags_marshall_read; + + if (!dev->tagger.query_block_fn) + dev->tagger.query_block_fn = yaffs_tags_marshall_query_block; + + if (!dev->tagger.mark_bad_fn) + dev->tagger.mark_bad_fn = yaffs_tags_marshall_mark_bad; + +} diff --git a/target/linux/generic/files/fs/yaffs2/yaffsinterface.h b/target/linux/generic/files/fs/yaffs2/yaffs_tagsmarshall.h index 62694d8874..bf3e68a1a5 100644 --- a/target/linux/generic/files/fs/yaffs2/yaffsinterface.h +++ b/target/linux/generic/files/fs/yaffs2/yaffs_tagsmarshall.h @@ -1,7 +1,7 @@ /* * YAFFS: Yet another Flash File System . A NAND-flash specific file system. * - * Copyright (C) 2002-2010 Aleph One Ltd. + * Copyright (C) 2002-2011 Aleph One Ltd. * for Toby Churchill Ltd and Brightstar Engineering * * Created by Charles Manning <charles@aleph1.co.uk> @@ -13,9 +13,10 @@ * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL. */ -#ifndef __YAFFSINTERFACE_H__ -#define __YAFFSINTERFACE_H__ +#ifndef __YAFFS_TAGSMARSHALL_H__ +#define __YAFFS_TAGSMARSHALL_H__ -int yaffs_initialise(unsigned nBlocks); +#include "yaffs_guts.h" +void yaffs_tags_marshall_install(struct yaffs_dev *dev); #endif diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_tagsvalidity.c b/target/linux/generic/files/fs/yaffs2/yaffs_tagsvalidity.c deleted file mode 100644 index 787cdba370..0000000000 --- a/target/linux/generic/files/fs/yaffs2/yaffs_tagsvalidity.c +++ /dev/null @@ -1,28 +0,0 @@ -/* - * 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_tagsvalidity.h" - -void yaffs_init_tags(yaffs_ext_tags *tags) -{ - memset(tags, 0, sizeof(yaffs_ext_tags)); - tags->validity1 = 0xAAAAAAAA; - tags->validty1 = 0x55555555; -} - -int yaffs_validate_tags(yaffs_ext_tags *tags) -{ - 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 deleted file mode 100644 index 085056c56b..0000000000 --- a/target/linux/generic/files/fs/yaffs2/yaffs_tagsvalidity.h +++ /dev/null @@ -1,24 +0,0 @@ -/* - * 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_TAGS_VALIDITY_H__ -#define __YAFFS_TAGS_VALIDITY_H__ - -#include "yaffs_guts.h" - -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 index 9fe7214a21..fd26054d39 100644 --- a/target/linux/generic/files/fs/yaffs2/yaffs_trace.h +++ b/target/linux/generic/files/fs/yaffs2/yaffs_trace.h @@ -1,7 +1,7 @@ /* * YAFFS: Yet another Flash File System . A NAND-flash specific file system. * - * Copyright (C) 2002-2010 Aleph One Ltd. + * Copyright (C) 2002-2011 Aleph One Ltd. * for Toby Churchill Ltd and Brightstar Engineering * * Created by Charles Manning <charles@aleph1.co.uk> @@ -13,7 +13,6 @@ * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL. */ - #ifndef __YTRACE_H__ #define __YTRACE_H__ @@ -44,17 +43,15 @@ extern unsigned int yaffs_wr_attempts; #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_VERIFY_ALL 0x000f0000 #define YAFFS_TRACE_SYNC 0x00100000 #define YAFFS_TRACE_BACKGROUND 0x00200000 #define YAFFS_TRACE_LOCK 0x00400000 +#define YAFFS_TRACE_MOUNT 0x00800000 #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) +#define YAFFS_TRACE_ALWAYS 0xf0000000 #endif diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_verify.c b/target/linux/generic/files/fs/yaffs2/yaffs_verify.c index 39d16e6363..e8f2f0a6c2 100644 --- a/target/linux/generic/files/fs/yaffs2/yaffs_verify.c +++ b/target/linux/generic/files/fs/yaffs2/yaffs_verify.c @@ -1,7 +1,7 @@ /* * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. * - * Copyright (C) 2002-2010 Aleph One Ltd. + * Copyright (C) 2002-2011 Aleph One Ltd. * for Toby Churchill Ltd and Brightstar Engineering * * Created by Charles Manning <charles@aleph1.co.uk> @@ -11,271 +11,229 @@ * 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) +int yaffs_skip_verification(struct yaffs_dev *dev) { - dev=dev; - return !(yaffs_trace_mask & (YAFFS_TRACE_VERIFY | YAFFS_TRACE_VERIFY_FULL)); + (void) dev; + return !(yaffs_trace_mask & + (YAFFS_TRACE_VERIFY | YAFFS_TRACE_VERIFY_FULL)); } -static int yaffs_skip_full_verification(yaffs_dev_t *dev) +static int yaffs_skip_full_verification(struct yaffs_dev *dev) { - dev=dev; + (void) dev; return !(yaffs_trace_mask & (YAFFS_TRACE_VERIFY_FULL)); } -static int yaffs_skip_nand_verification(yaffs_dev_t *dev) +static int yaffs_skip_nand_verification(struct yaffs_dev *dev) { - dev=dev; + (void) 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" +static const char * const block_state_name[] = { + "Unknown", + "Needs scan", + "Scanning", + "Empty", + "Allocating", + "Full", + "Dirty", + "Checkpoint", + "Collecting", + "Dead" }; - -void yaffs_verify_blk(yaffs_dev_t *dev, yaffs_block_info_t *bi, int n) +void yaffs_verify_blk(struct yaffs_dev *dev, struct yaffs_block_info *bi, int n) { - int actuallyUsed; - int inUse; + int actually_used; + int in_use; 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)); + yaffs_trace(YAFFS_TRACE_VERIFY, + "Block %d has undefined state %d", + 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])); + case YAFFS_BLOCK_STATE_NEEDS_SCAN: + yaffs_trace(YAFFS_TRACE_VERIFY, + "Block %d has bad run-state %s", + n, block_state_name[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)); + actually_used = 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 || + actually_used < 0 || actually_used > dev->param.chunks_per_block) + yaffs_trace(YAFFS_TRACE_VERIFY, + "Block %d has illegal values pages_in_used %d soft_del_pages %d", + 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)); - + in_use = yaffs_count_chunk_bits(dev, n); + if (in_use != bi->pages_in_use) + yaffs_trace(YAFFS_TRACE_VERIFY, + "Block %d has inconsistent values pages_in_use %d counted chunk bits %d", + n, bi->pages_in_use, in_use); } - - -void yaffs_verify_collected_blk(yaffs_dev_t *dev, yaffs_block_info_t *bi, int n) +void yaffs_verify_collected_blk(struct yaffs_dev *dev, + struct yaffs_block_info *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)); + bi->block_state != YAFFS_BLOCK_STATE_EMPTY) { + yaffs_trace(YAFFS_TRACE_ERROR, + "Block %d is in state %d after gc, should be erased", + n, bi->block_state); } } -void yaffs_verify_blocks(yaffs_dev_t *dev) +void yaffs_verify_blocks(struct yaffs_dev *dev) { int i; - int nBlocksPerState[YAFFS_NUMBER_OF_BLOCK_STATES]; - int nIllegalBlockStates = 0; + int state_count[YAFFS_NUMBER_OF_BLOCK_STATES]; + int illegal_states = 0; if (yaffs_skip_verification(dev)) return; - memset(nBlocksPerState, 0, sizeof(nBlocksPerState)); + memset(state_count, 0, sizeof(state_count)); for (i = dev->internal_start_block; i <= dev->internal_end_block; i++) { - yaffs_block_info_t *bi = yaffs_get_block_info(dev, i); + struct yaffs_block_info *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]++; + state_count[bi->block_state]++; else - nIllegalBlockStates++; + illegal_states++; } - T(YAFFS_TRACE_VERIFY, (TSTR(""TENDSTR))); - T(YAFFS_TRACE_VERIFY, (TSTR("Block summary"TENDSTR))); + yaffs_trace(YAFFS_TRACE_VERIFY, "Block summary"); - 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))); + yaffs_trace(YAFFS_TRACE_VERIFY, + "%d blocks have illegal states", + illegal_states); + if (state_count[YAFFS_BLOCK_STATE_ALLOCATING] > 1) + yaffs_trace(YAFFS_TRACE_VERIFY, + "Too many allocating blocks"); 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))); - + yaffs_trace(YAFFS_TRACE_VERIFY, + "%s %d blocks", + block_state_name[i], state_count[i]); + + if (dev->blocks_in_checkpt != state_count[YAFFS_BLOCK_STATE_CHECKPOINT]) + yaffs_trace(YAFFS_TRACE_VERIFY, + "Checkpoint block count wrong dev %d count %d", + dev->blocks_in_checkpt, + state_count[YAFFS_BLOCK_STATE_CHECKPOINT]); + + if (dev->n_erased_blocks != state_count[YAFFS_BLOCK_STATE_EMPTY]) + yaffs_trace(YAFFS_TRACE_VERIFY, + "Erased block count wrong dev %d count %d", + dev->n_erased_blocks, + state_count[YAFFS_BLOCK_STATE_EMPTY]); + + if (state_count[YAFFS_BLOCK_STATE_COLLECTING] > 1) + yaffs_trace(YAFFS_TRACE_VERIFY, + "Too many collecting blocks %d (max is 1)", + state_count[YAFFS_BLOCK_STATE_COLLECTING]); } /* - * Verify the object header. oh must be valid, but obj and tags may be NULL in which - * case those tests will not be performed. + * 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) +void yaffs_verify_oh(struct yaffs_obj *obj, struct yaffs_obj_hdr *oh, + struct yaffs_ext_tags *tags, int parent_check) { 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)); + yaffs_trace(YAFFS_TRACE_VERIFY, + "Verifying object header tags %p obj %p oh %p", + 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)); + oh->type > YAFFS_OBJECT_TYPE_MAX) + yaffs_trace(YAFFS_TRACE_VERIFY, + "Obj %d header type is illegal value 0x%x", + 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)); - + yaffs_trace(YAFFS_TRACE_VERIFY, + "Obj %d header mismatch obj_id %d", + tags->obj_id, obj->obj_id); /* - * Check that the object's parent ids match if parentCheck requested. + * Check that the object's parent ids match if parent_check 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 (parent_check && tags->obj_id > 1 && !obj->parent) + yaffs_trace(YAFFS_TRACE_VERIFY, + "Obj %d header mismatch parent_id %d obj->parent is NULL", + tags->obj_id, oh->parent_obj_id); + + if (parent_check && obj->parent && + oh->parent_obj_id != obj->parent->obj_id && + (oh->parent_obj_id != YAFFS_OBJECTID_UNLINKED || + obj->parent->obj_id != YAFFS_OBJECTID_DELETED)) + yaffs_trace(YAFFS_TRACE_VERIFY, + "Obj %d header mismatch parent_id %d parent_obj_id %d", + tags->obj_id, oh->parent_obj_id, + obj->parent->obj_id); + + if (tags->obj_id > 1 && oh->name[0] == 0) /* Null name */ + yaffs_trace(YAFFS_TRACE_VERIFY, + "Obj %d header name is NULL", + obj->obj_id); + + if (tags->obj_id > 1 && ((u8) (oh->name[0])) == 0xff) /* Junk name */ + yaffs_trace(YAFFS_TRACE_VERIFY, + "Obj %d header name is 0xff", + 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) +void yaffs_verify_file(struct yaffs_obj *obj) { - 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; + u32 x; + int required_depth; + int actual_depth; + int last_chunk; + u32 offset_in_chunk; + u32 the_chunk; + + u32 i; + struct yaffs_dev *dev; + struct yaffs_ext_tags tags; + struct yaffs_tnode *tn; + u32 obj_id; if (!obj) return; @@ -286,16 +244,19 @@ void yaffs_verify_file(yaffs_obj_t *obj) 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; + yaffs_addr_to_chunk(dev, obj->variant.file_variant.file_size, + &last_chunk, &offset_in_chunk); + last_chunk++; + x = last_chunk >> YAFFS_TNODES_LEVEL0_BITS; + required_depth = 0; while (x > 0) { x >>= YAFFS_TNODES_INTERNAL_BITS; - requiredTallness++; + required_depth++; } - actualTallness = obj->variant.file_variant.top_level; + actual_depth = 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 @@ -305,26 +266,26 @@ void yaffs_verify_file(yaffs_obj_t *obj) if (yaffs_skip_nand_verification(dev)) return; - for (i = 1; i <= lastChunk; i++) { + for (i = 1; i <= last_chunk; 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)); - } - } + if (!tn) + continue; + + the_chunk = yaffs_get_group_base(dev, tn, i); + if (the_chunk > 0) { + yaffs_rd_chunk_tags_nand(dev, the_chunk, NULL, + &tags); + if (tags.obj_id != obj_id || tags.chunk_id != i) + yaffs_trace(YAFFS_TRACE_VERIFY, + "Object %d chunk_id %d NAND mismatch chunk %d tags (%d:%d)", + obj_id, i, the_chunk, + tags.obj_id, tags.chunk_id); } } } - -void yaffs_verify_link(yaffs_obj_t *obj) +void yaffs_verify_link(struct yaffs_obj *obj) { if (obj && yaffs_skip_verification(obj->my_dev)) return; @@ -332,7 +293,7 @@ void yaffs_verify_link(yaffs_obj_t *obj) /* Verify sane equivalent object */ } -void yaffs_verify_symlink(yaffs_obj_t *obj) +void yaffs_verify_symlink(struct yaffs_obj *obj) { if (obj && yaffs_skip_verification(obj->my_dev)) return; @@ -340,23 +301,21 @@ void yaffs_verify_symlink(yaffs_obj_t *obj) /* Verify symlink string */ } -void yaffs_verify_special(yaffs_obj_t *obj) +void yaffs_verify_special(struct yaffs_obj *obj) { if (obj && yaffs_skip_verification(obj->my_dev)) return; } -void yaffs_verify_obj(yaffs_obj_t *obj) +void yaffs_verify_obj(struct yaffs_obj *obj) { - yaffs_dev_t *dev; - - __u32 chunkMin; - __u32 chunkMax; - - __u32 chunk_idOk; - __u32 chunkInRange; - __u32 chunkShouldNotBeDeleted; - __u32 chunkValid; + struct yaffs_dev *dev; + u32 chunk_min; + u32 chunk_max; + u32 chunk_id_ok; + u32 chunk_in_range; + u32 chunk_wrongly_deleted; + u32 chunk_valid; if (!obj) return; @@ -371,54 +330,53 @@ void yaffs_verify_obj(yaffs_obj_t *obj) /* 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), + chunk_min = dev->internal_start_block * dev->param.chunks_per_block; + chunk_max = + (dev->internal_end_block + 1) * dev->param.chunks_per_block - 1; + + chunk_in_range = (((unsigned)(obj->hdr_chunk)) >= chunk_min && + ((unsigned)(obj->hdr_chunk)) <= chunk_max); + chunk_id_ok = chunk_in_range || (obj->hdr_chunk == 0); + chunk_valid = chunk_in_range && + yaffs_check_chunk_bit(dev, + obj->hdr_chunk / dev->param.chunks_per_block, + obj->hdr_chunk % dev->param.chunks_per_block); + chunk_wrongly_deleted = chunk_in_range && !chunk_valid; + + if (!obj->fake && (!chunk_id_ok || chunk_wrongly_deleted)) + yaffs_trace(YAFFS_TRACE_VERIFY, + "Obj %d has chunk_id %d %s %s", obj->obj_id, obj->hdr_chunk, - chunk_idOk ? "" : ",out of range", - chunkShouldNotBeDeleted ? ",marked as deleted" : "")); - } + chunk_id_ok ? "" : ",out of range", + chunk_wrongly_deleted ? ",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__); + if (chunk_valid && !yaffs_skip_nand_verification(dev)) { + struct yaffs_ext_tags tags; + struct yaffs_obj_hdr *oh; + u8 *buffer = yaffs_get_temp_buffer(dev); - oh = (yaffs_obj_header *)buffer; + oh = (struct yaffs_obj_hdr *)buffer; - yaffs_rd_chunk_tags_nand(dev, obj->hdr_chunk, buffer, - &tags); + 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__); + yaffs_release_temp_buffer(dev, buffer); } /* 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)); + if (obj && !obj->fake && (!obj->parent || obj->parent->my_dev != dev)) { + yaffs_trace(YAFFS_TRACE_VERIFY, + "Obj %d has parent pointer %p which does not look like an object", + 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)); + if (obj->parent && + obj->parent->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) { + yaffs_trace(YAFFS_TRACE_VERIFY, + "Obj %d's parent is not a directory (type %d)", + obj->obj_id, obj->parent->variant_type); } switch (obj->variant_type) { @@ -439,45 +397,41 @@ void yaffs_verify_obj(yaffs_obj_t *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)); + yaffs_trace(YAFFS_TRACE_VERIFY, + "Obj %d has illegaltype %d", + obj->obj_id, obj->variant_type); break; } } -void yaffs_verify_objects(yaffs_dev_t *dev) +void yaffs_verify_objects(struct yaffs_dev *dev) { - yaffs_obj_t *obj; + struct yaffs_obj *obj; int i; - struct ylist_head *lh; + struct list_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); - } + for (i = 0; i < YAFFS_NOBJECT_BUCKETS; i++) { + list_for_each(lh, &dev->obj_bucket[i].list) { + obj = list_entry(lh, struct yaffs_obj, hash_link); + yaffs_verify_obj(obj); } } } - -void yaffs_verify_obj_in_dir(yaffs_obj_t *obj) +void yaffs_verify_obj_in_dir(struct yaffs_obj *obj) { - struct ylist_head *lh; - yaffs_obj_t *listObj; - + struct list_head *lh; + struct yaffs_obj *list_obj; int count = 0; if (!obj) { - T(YAFFS_TRACE_ALWAYS, (TSTR("No object to verify" TENDSTR))); - YBUG(); + yaffs_trace(YAFFS_TRACE_ALWAYS, "No object to verify"); + BUG(); return; } @@ -485,40 +439,40 @@ void yaffs_verify_obj_in_dir(yaffs_obj_t *obj) return; if (!obj->parent) { - T(YAFFS_TRACE_ALWAYS, (TSTR("Object does not have parent" TENDSTR))); - YBUG(); + yaffs_trace(YAFFS_TRACE_ALWAYS, "Object does not have parent"); + BUG(); return; } if (obj->parent->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) { - T(YAFFS_TRACE_ALWAYS, (TSTR("Parent is not directory" TENDSTR))); - YBUG(); + yaffs_trace(YAFFS_TRACE_ALWAYS, "Parent is not directory"); + BUG(); } /* 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++; - } - } + list_for_each(lh, &obj->parent->variant.dir_variant.children) { + list_obj = list_entry(lh, struct yaffs_obj, siblings); + yaffs_verify_obj(list_obj); + if (obj == list_obj) + count++; + } if (count != 1) { - T(YAFFS_TRACE_ALWAYS, (TSTR("Object in directory %d times" TENDSTR), count)); - YBUG(); + yaffs_trace(YAFFS_TRACE_ALWAYS, + "Object in directory %d times", + count); + BUG(); } } -void yaffs_verify_dir(yaffs_obj_t *directory) +void yaffs_verify_dir(struct yaffs_obj *directory) { - struct ylist_head *lh; - yaffs_obj_t *listObj; + struct list_head *lh; + struct yaffs_obj *list_obj; if (!directory) { - YBUG(); + BUG(); return; } @@ -526,27 +480,29 @@ void yaffs_verify_dir(yaffs_obj_t *directory) return; if (directory->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) { - T(YAFFS_TRACE_ALWAYS, (TSTR("Directory has wrong type: %d" TENDSTR), directory->variant_type)); - YBUG(); + yaffs_trace(YAFFS_TRACE_ALWAYS, + "Directory has wrong type: %d", + directory->variant_type); + BUG(); } /* 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); + list_for_each(lh, &directory->variant.dir_variant.children) { + list_obj = list_entry(lh, struct yaffs_obj, siblings); + if (list_obj->parent != directory) { + yaffs_trace(YAFFS_TRACE_ALWAYS, + "Object in directory list has wrong parent %p", + list_obj->parent); + BUG(); } + yaffs_verify_obj_in_dir(list_obj); } } static int yaffs_free_verification_failures; -void yaffs_verify_free_chunks(yaffs_dev_t *dev) +void yaffs_verify_free_chunks(struct yaffs_dev *dev) { int counted; int difference; @@ -559,68 +515,15 @@ void yaffs_verify_free_chunks(yaffs_dev_t *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_trace(YAFFS_TRACE_ALWAYS, + "Freechunks verification failure %d %d %d", + dev->n_free_chunks, counted, difference); yaffs_free_verification_failures++; } } -int yaffs_verify_file_sane(yaffs_obj_t *in) +int yaffs_verify_file_sane(struct yaffs_obj *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; + (void) 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 index 5ec808ae3d..4f4af8d29a 100644 --- a/target/linux/generic/files/fs/yaffs2/yaffs_verify.h +++ b/target/linux/generic/files/fs/yaffs2/yaffs_verify.h @@ -1,14 +1,16 @@ /* - * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. + * YAFFS: Yet another Flash File System . A NAND-flash specific file system. * - * Copyright (C) 2002-2010 Aleph One Ltd. + * Copyright (C) 2002-2011 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 + * 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_VERIFY_H__ @@ -16,24 +18,26 @@ #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_blk(struct yaffs_dev *dev, struct yaffs_block_info *bi, + int n); +void yaffs_verify_collected_blk(struct yaffs_dev *dev, + struct yaffs_block_info *bi, int n); +void yaffs_verify_blocks(struct yaffs_dev *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); +void yaffs_verify_oh(struct yaffs_obj *obj, struct yaffs_obj_hdr *oh, + struct yaffs_ext_tags *tags, int parent_check); +void yaffs_verify_file(struct yaffs_obj *obj); +void yaffs_verify_link(struct yaffs_obj *obj); +void yaffs_verify_symlink(struct yaffs_obj *obj); +void yaffs_verify_special(struct yaffs_obj *obj); +void yaffs_verify_obj(struct yaffs_obj *obj); +void yaffs_verify_objects(struct yaffs_dev *dev); +void yaffs_verify_obj_in_dir(struct yaffs_obj *obj); +void yaffs_verify_dir(struct yaffs_obj *directory); +void yaffs_verify_free_chunks(struct yaffs_dev *dev); -int yaffs_verify_file_sane(yaffs_obj_t *obj); +int yaffs_verify_file_sane(struct yaffs_obj *obj); -int yaffs_skip_verification(yaffs_dev_t *dev); +int yaffs_skip_verification(struct yaffs_dev *dev); #endif - diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_vfs_glue.c b/target/linux/generic/files/fs/yaffs2/yaffs_vfs.c index 0f1ecee259..67050d4e3d 100644 --- a/target/linux/generic/files/fs/yaffs2/yaffs_vfs_glue.c +++ b/target/linux/generic/files/fs/yaffs2/yaffs_vfs.c @@ -1,7 +1,7 @@ /* * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. * - * Copyright (C) 2002-2010 Aleph One Ltd. + * Copyright (C) 2002-2011 Aleph One Ltd. * for Toby Churchill Ltd and Brightstar Engineering * * Created by Charles Manning <charles@aleph1.co.uk> @@ -24,11 +24,11 @@ * the VFS. * * Special notes: - * >> 2.4: sb->u.generic_sbp points to the yaffs_dev_t associated with + * >> 2.4: sb->u.generic_sbp points to the struct yaffs_dev associated with * this superblock - * >> 2.6: sb->s_fs_info points to the yaffs_dev_t associated with this + * >> 2.6: sb->s_fs_info points to the struct yaffs_dev associated with this * superblock - * >> inode->u.generic_ip points to the associated yaffs_obj_t. + * >> inode->u.generic_ip points to the associated struct yaffs_obj. */ /* @@ -39,29 +39,34 @@ #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 10)) #define YAFFS_COMPILE_BACKGROUND -#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6, 23)) +#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 23)) #define YAFFS_COMPILE_FREEZER #endif #endif -#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,28)) +#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 28)) #define YAFFS_COMPILE_EXPORTFS #endif -#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,35)) +#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)) +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 35)) #define YAFFS_HAS_EVICT_INODE #endif -#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,13)) +#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(3, 6, 0)) +#define YAFFS_HAS_WRITE_SUPER +#endif + + #if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 19)) #include <linux/config.h> #endif @@ -72,7 +77,9 @@ #include <linux/init.h> #include <linux/fs.h> #include <linux/proc_fs.h> +#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 39)) #include <linux/smp_lock.h> +#endif #include <linux/pagemap.h> #include <linux/mtd/mtd.h> #include <linux/interrupt.h> @@ -126,32 +133,33 @@ #define YPROC_ROOT NULL #endif -#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,26)) +#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(3, 6, 0)) +#define YAFFS_SUPER_HAS_DIRTY +#endif + + +#if (LINUX_VERSION_CODE < KERNEL_VERSION(3, 2, 0)) +#define set_nlink(inode, count) do { (inode)->i_nlink = (count); } while(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; + return (uint32_t) result; } #else #define YCALCBLOCKS(s, b) ((s)/(b)) @@ -163,19 +171,24 @@ static uint32_t YCALCBLOCKS(uint64_t partition_size, uint32_t block_size) #include "yportenv.h" #include "yaffs_trace.h" #include "yaffs_guts.h" +#include "yaffs_attribs.h" #include "yaffs_linux.h" #include "yaffs_mtdif.h" -#include "yaffs_mtdif1.h" -#include "yaffs_mtdif2.h" +#include "yaffs_packedtags2.h" +#include "yaffs_getblockinfo.h" + +unsigned int yaffs_trace_mask = + YAFFS_TRACE_BAD_BLOCKS | + YAFFS_TRACE_ALWAYS | + 0; -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; - +unsigned int yaffs_auto_select = 1; /* Module Parameters */ #if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) module_param(yaffs_trace_mask, uint, 0644); @@ -193,812 +206,73 @@ MODULE_PARM(yaffs_gc_control, "i"); #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); +#define yaffs_inode_to_obj_lv(iptr) ((iptr)->i_private) #else -static int yaffs_statfs(struct super_block *sb, struct statfs *buf); +#define yaffs_inode_to_obj_lv(iptr) ((iptr)->u.generic_ip) #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 +#define yaffs_inode_to_obj(iptr) \ + ((struct yaffs_obj *)(yaffs_inode_to_obj_lv(iptr))) +#define yaffs_dentry_to_obj(dptr) yaffs_inode_to_obj((dptr)->d_inode) -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); +#define yaffs_super_to_dev(sb) ((struct yaffs_dev *)sb->s_fs_info) #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); -} +#define yaffs_super_to_dev(sb) ((struct yaffs_dev *)sb->u.generic_sbp) #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) +#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 5, 0)) +#define Y_CLEAR_INODE(i) clear_inode(i) #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))); - -} +#define Y_CLEAR_INODE(i) end_writeback(i) #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); - } +#define update_dir_time(dir) do {\ + (dir)->i_ctime = (dir)->i_mtime = CURRENT_TIME; \ + } while (0) +static void yaffs_fill_inode_from_obj(struct inode *inode, + struct yaffs_obj *obj); -} -#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) +static void yaffs_gross_lock(struct yaffs_dev *dev) { - 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); - } - + yaffs_trace(YAFFS_TRACE_LOCK, "yaffs locking %p", current); + mutex_lock(&(yaffs_dev_to_lc(dev)->gross_lock)); + yaffs_trace(YAFFS_TRACE_LOCK, "yaffs locked %p", current); } -/* 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) +static void yaffs_gross_unlock(struct yaffs_dev *dev) { - 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); + yaffs_trace(YAFFS_TRACE_LOCK, "yaffs unlocking %p", current); + mutex_unlock(&(yaffs_dev_to_lc(dev)->gross_lock)); } -#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; + struct yaffs_obj *obj; unsigned char *pg_buf; int ret; + loff_t pos = ((loff_t) pg->index) << PAGE_CACHE_SHIFT; + struct yaffs_dev *dev; - 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)); + yaffs_trace(YAFFS_TRACE_OS, + "yaffs_readpage_nolock at %lld, size %08x", + (long long)pos, + (unsigned)PAGE_CACHE_SIZE); obj = yaffs_dentry_to_obj(f->f_dentry); @@ -1016,9 +290,7 @@ static int yaffs_readpage_nolock(struct file *f, struct page *pg) yaffs_gross_lock(dev); - ret = yaffs_file_rd(obj, pg_buf, - pg->index << PAGE_CACHE_SHIFT, - PAGE_CACHE_SIZE); + ret = yaffs_file_rd(obj, pg_buf, pos, PAGE_CACHE_SIZE); yaffs_gross_unlock(dev); @@ -1036,7 +308,7 @@ static int yaffs_readpage_nolock(struct file *f, struct page *pg) flush_dcache_page(pg); kunmap(pg); - T(YAFFS_TRACE_OS, (TSTR("yaffs_readpage_nolock done\n"))); + yaffs_trace(YAFFS_TRACE_OS, "yaffs_readpage_nolock done"); return ret; } @@ -1051,13 +323,59 @@ 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"))); + yaffs_trace(YAFFS_TRACE_OS, "yaffs_readpage"); + ret = yaffs_readpage_unlock(f, pg); + yaffs_trace(YAFFS_TRACE_OS, "yaffs_readpage done"); return ret; } -/* writepage inspired by/stolen from smbfs */ + +static void yaffs_set_super_dirty_val(struct yaffs_dev *dev, int val) +{ + struct yaffs_linux_context *lc = yaffs_dev_to_lc(dev); + + if (lc) + lc->dirty = val; + +# ifdef YAFFS_SUPER_HAS_DIRTY + { + struct super_block *sb = lc->super; + + if (sb) + sb->s_dirt = val; + } +#endif + +} + +static void yaffs_set_super_dirty(struct yaffs_dev *dev) +{ + yaffs_set_super_dirty_val(dev, 1); +} + +static void yaffs_clear_super_dirty(struct yaffs_dev *dev) +{ + yaffs_set_super_dirty_val(dev, 0); +} + +static int yaffs_check_super_dirty(struct yaffs_dev *dev) +{ + struct yaffs_linux_context *lc = yaffs_dev_to_lc(dev); + + if (lc && lc->dirty) + return 1; + +# ifdef YAFFS_SUPER_HAS_DIRTY + { + struct super_block *sb = lc->super; + + if (sb && sb->s_dirt) + return 1; + } +#endif + return 0; + +} #if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) static int yaffs_writepage(struct page *page, struct writeback_control *wbc) @@ -1065,13 +383,13 @@ static int yaffs_writepage(struct page *page, struct writeback_control *wbc) static int yaffs_writepage(struct page *page) #endif { - yaffs_dev_t *dev; + struct yaffs_dev *dev; struct address_space *mapping = page->mapping; struct inode *inode; unsigned long end_index; char *buffer; - yaffs_obj_t *obj; - int nWritten = 0; + struct yaffs_obj *obj; + int n_written = 0; unsigned n_bytes; loff_t i_size; @@ -1084,20 +402,20 @@ static int yaffs_writepage(struct page *page) end_index = i_size >> PAGE_CACHE_SHIFT; - if(page->index < end_index) + if (page->index < end_index) n_bytes = PAGE_CACHE_SIZE; else { - n_bytes = i_size & (PAGE_CACHE_SIZE -1); + 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); + yaffs_trace(YAFFS_TRACE_OS, + "yaffs_writepage at %lld, inode size = %lld!!", + ((loff_t)page->index) << PAGE_CACHE_SHIFT, + inode->i_size); + yaffs_trace(YAFFS_TRACE_OS, + " -> don't care!!"); + + zero_user_segment(page, 0, PAGE_CACHE_SIZE); set_page_writeback(page); unlock_page(page); end_page_writeback(page); @@ -1105,32 +423,32 @@ static int yaffs_writepage(struct page *page) } } - if(n_bytes != PAGE_CACHE_SIZE) - zero_user_segment(page,n_bytes,PAGE_CACHE_SIZE); + 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); + obj = yaffs_inode_to_obj(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)); + yaffs_trace(YAFFS_TRACE_OS, + "yaffs_writepage at %lld, size %08x", + ((loff_t)page->index) << PAGE_CACHE_SHIFT, n_bytes); + yaffs_trace(YAFFS_TRACE_OS, + "writepag0: obj = %lld, ino = %lld", + obj->variant.file_variant.file_size, inode->i_size); - nWritten = yaffs_wr_file(obj, buffer, - page->index << PAGE_CACHE_SHIFT, n_bytes, 0); + n_written = yaffs_wr_file(obj, buffer, + ((loff_t)page->index) << PAGE_CACHE_SHIFT, n_bytes, 0); - yaffs_touch_super(dev); + yaffs_set_super_dirty(dev); - T(YAFFS_TRACE_OS, - (TSTR("writepag1: obj = %05x, ino = %05x\n"), - (int)obj->variant.file_variant.file_size, (int)inode->i_size)); + yaffs_trace(YAFFS_TRACE_OS, + "writepag1: obj = %lld, ino = %lld", + obj->variant.file_variant.file_size, inode->i_size); yaffs_gross_unlock(dev); @@ -1140,14 +458,51 @@ static int yaffs_writepage(struct page *page) end_page_writeback(page); put_page(page); - return (nWritten == n_bytes) ? 0 : -ENOSPC; + return (n_written == n_bytes) ? 0 : -ENOSPC; +} + +/* 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) +{ + struct yaffs_obj *obj; + struct yaffs_dev *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) +{ + struct yaffs_obj *obj; + struct yaffs_dev *dev; + + obj = yaffs_dentry_to_obj(f->f_dentry); + + dev = obj->my_dev; + + yaffs_gross_lock(dev); + + yaffs_gross_unlock(dev); +} #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) + loff_t pos, unsigned len, unsigned flags, + struct page **pagep, void **fsdata) { struct page *pg = NULL; pgoff_t index = pos >> PAGE_CACHE_SHIFT; @@ -1164,12 +519,12 @@ static int yaffs_write_begin(struct file *filp, struct address_space *mapping, *pagep = pg; if (!pg) { - ret = -ENOMEM; + 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)); + yaffs_trace(YAFFS_TRACE_OS, + "start yaffs_write_begin index %d(%x) uptodate %d", + (int)index, (int)index, Page_Uptodate(pg) ? 1 : 0); /* Get fs space */ space_held = yaffs_hold_space(filp); @@ -1188,13 +543,13 @@ static int yaffs_write_begin(struct file *filp, struct address_space *mapping, goto out; /* Happy path return */ - T(YAFFS_TRACE_OS, (TSTR("end yaffs_write_begin - ok\n"))); + yaffs_trace(YAFFS_TRACE_OS, "end yaffs_write_begin - ok"); return 0; out: - T(YAFFS_TRACE_OS, - (TSTR("end yaffs_write_begin fail returning %d\n"), ret)); + yaffs_trace(YAFFS_TRACE_OS, + "end yaffs_write_begin fail returning %d", ret); if (space_held) yaffs_release_space(filp); if (pg) { @@ -1207,9 +562,9 @@ out: #else static int yaffs_prepare_write(struct file *f, struct page *pg, - unsigned offset, unsigned to) + unsigned offset, unsigned to) { - T(YAFFS_TRACE_OS, (TSTR("yaffs_prepair_write\n"))); + yaffs_trace(YAFFS_TRACE_OS, "yaffs_prepair_write"); if (!Page_Uptodate(pg)) return yaffs_readpage_nolock(f, pg); @@ -1217,10 +572,69 @@ static int yaffs_prepare_write(struct file *f, struct page *pg, } #endif + +static ssize_t yaffs_file_write(struct file *f, const char *buf, size_t n, + loff_t * pos) +{ + struct yaffs_obj *obj; + int n_written; + loff_t ipos; + struct inode *inode; + struct yaffs_dev *dev; + + obj = yaffs_dentry_to_obj(f->f_dentry); + + if (!obj) { + yaffs_trace(YAFFS_TRACE_OS, + "yaffs_file_write: hey obj is null!"); + return -EINVAL; + } + + 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; + + yaffs_trace(YAFFS_TRACE_OS, + "yaffs_file_write about to write writing %u(%x) bytes to object %d at %lld", + (unsigned)n, (unsigned)n, obj->obj_id, ipos); + + n_written = yaffs_wr_file(obj, buf, ipos, n, 0); + + yaffs_set_super_dirty(dev); + + yaffs_trace(YAFFS_TRACE_OS, + "yaffs_file_write: %d(%x) bytes written", + (unsigned)n, (unsigned)n); + + if (n_written > 0) { + ipos += n_written; + *pos = ipos; + if (ipos > inode->i_size) { + inode->i_size = ipos; + inode->i_blocks = (ipos + 511) >> 9; + + yaffs_trace(YAFFS_TRACE_OS, + "yaffs_file_write size updated to %lld bytes, %d blocks", + ipos, (int)(inode->i_blocks)); + } + + } + yaffs_gross_unlock(dev); + return (n_written == 0) && (n > 0) ? -ENOSPC : n_written; +} + + #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) + loff_t pos, unsigned len, unsigned copied, + struct page *pg, void *fsdadata) { int ret = 0; void *addr, *kva; @@ -1229,19 +643,17 @@ static int yaffs_write_end(struct file *filp, struct address_space *mapping, 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)); + yaffs_trace(YAFFS_TRACE_OS, + "yaffs_write_end addr %p pos %lld n_bytes %d", + addr, 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)); + yaffs_trace(YAFFS_TRACE_OS, + "yaffs_write_end not same size ret %d copied %d", + ret, copied); SetPageError(pg); - } else { - /* Nothing */ } kunmap(pg); @@ -1254,425 +666,539 @@ static int yaffs_write_end(struct file *filp, struct address_space *mapping, #else static int yaffs_commit_write(struct file *f, struct page *pg, unsigned offset, - unsigned to) + 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; + int n_written; kva = kmap(pg); addr = kva + offset; - saddr = (unsigned) addr; + yaffs_trace(YAFFS_TRACE_OS, + "yaffs_commit_write addr %p pos %lld n_bytes %d", + addr, pos, n_bytes); - T(YAFFS_TRACE_OS, - (TSTR("yaffs_commit_write addr %x pos %x n_bytes %d\n"), - saddr, spos, n_bytes)); + n_written = yaffs_file_write(f, addr, n_bytes, &pos); - 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)); + if (n_written != n_bytes) { + yaffs_trace(YAFFS_TRACE_OS, + "yaffs_commit_write not same size n_written %d n_bytes %d", + n_written, n_bytes); SetPageError(pg); - } else { - /* Nothing */ } - kunmap(pg); - T(YAFFS_TRACE_OS, - (TSTR("yaffs_commit_write returning %d\n"), - nWritten == n_bytes ? 0 : nWritten)); + yaffs_trace(YAFFS_TRACE_OS, + "yaffs_commit_write returning %d", + n_written == n_bytes ? 0 : n_written); - return nWritten == n_bytes ? 0 : nWritten; + return n_written == n_bytes ? 0 : n_written; } #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 +}; -static void yaffs_fill_inode_from_obj(struct inode *inode, yaffs_obj_t *obj) + +#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 (inode && obj) { + struct yaffs_obj *obj = yaffs_dentry_to_obj(file->f_dentry); + struct yaffs_dev *dev = obj->my_dev; - /* 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; - } + yaffs_trace(YAFFS_TRACE_OS, + "yaffs_file_flush object %d (%s)", + obj->obj_id, + obj->dirty ? "dirty" : "clean"); - break; - case YAFFS_OBJECT_TYPE_SYMLINK: - if (!S_ISLNK(mode)) { - obj->yst_mode &= ~S_IFMT; - obj->yst_mode |= S_IFLNK; - } + yaffs_gross_lock(dev); - break; - case YAFFS_OBJECT_TYPE_DIRECTORY: - if (!S_ISDIR(mode)) { - obj->yst_mode &= ~S_IFMT; - obj->yst_mode |= S_IFDIR; - } + yaffs_flush_file(obj, 1, 0); - break; - case YAFFS_OBJECT_TYPE_UNKNOWN: - case YAFFS_OBJECT_TYPE_HARDLINK: - case YAFFS_OBJECT_TYPE_SPECIAL: - default: - /* TODO? */ - break; - } + yaffs_gross_unlock(dev); - inode->i_flags |= S_NOATIME; + return 0; +} - 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; +#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 39)) +static int yaffs_sync_object(struct file *file, loff_t start, loff_t end, int datasync) +#elif (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 34)) +static int yaffs_sync_object(struct file *file, int datasync) #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; +static int yaffs_sync_object(struct file *file, struct dentry *dentry, + int datasync) +#endif +{ + struct yaffs_obj *obj; + struct yaffs_dev *dev; +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 34)) + struct dentry *dentry = file->f_path.dentry; #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); + obj = yaffs_dentry_to_obj(dentry); - 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))); + dev = obj->my_dev; - switch (obj->yst_mode & S_IFMT) { - default: /* fifo, device or socket */ + yaffs_trace(YAFFS_TRACE_OS | YAFFS_TRACE_SYNC, + "yaffs_sync_object"); + yaffs_gross_lock(dev); + yaffs_flush_file(obj, 1, datasync); + yaffs_gross_unlock(dev); + return 0; +} + + +#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)) - init_special_inode(inode, obj->yst_mode, - old_decode_dev(obj->yst_rdev)); + .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 int yaffs_vfs_setsize(struct inode *inode, loff_t newsize) +{ +#ifdef YAFFS_USE_TRUNCATE_SETSIZE + truncate_setsize(inode, newsize); + return 0; #else - init_special_inode(inode, obj->yst_mode, - (dev_t) (obj->yst_rdev)); + truncate_inode_pages(&inode->i_data, newsize); + return 0; #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"))); - } +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 } -struct inode *yaffs_get_inode(struct super_block *sb, int mode, int dev, - yaffs_obj_t *obj) +static int yaffs_setattr(struct dentry *dentry, struct iattr *attr) { - struct inode *inode; + struct inode *inode = dentry->d_inode; + int error = 0; + struct yaffs_dev *dev; - if (!sb) { - T(YAFFS_TRACE_OS, - (TSTR("yaffs_get_inode for NULL super_block!!\n"))); - return NULL; + yaffs_trace(YAFFS_TRACE_OS, + "yaffs_setattr of object %d", + yaffs_inode_to_obj(inode)->obj_id); +#if 0 + /* Fail if a requested resize >= 2GB */ + if (attr->ia_valid & ATTR_SIZE && (attr->ia_size >> 31)) + error = -EINVAL; +#endif + + if (error == 0) + error = inode_change_ok(inode, attr); + if (error == 0) { + int result; + if (!error) { + error = yaffs_vfs_setattr(inode, attr); + yaffs_trace(YAFFS_TRACE_OS, "inode_setattr called"); + if (attr->ia_valid & ATTR_SIZE) { + yaffs_vfs_setsize(inode, attr->ia_size); + inode->i_blocks = (inode->i_size + 511) >> 9; + } + } + dev = yaffs_inode_to_obj(inode)->my_dev; + if (attr->ia_valid & ATTR_SIZE) { + yaffs_trace(YAFFS_TRACE_OS, + "resize to %d(%x)", + (int)(attr->ia_size), + (int)(attr->ia_size)); + } + yaffs_gross_lock(dev); + result = yaffs_set_attribs(yaffs_inode_to_obj(inode), attr); + if (result == YAFFS_OK) { + error = 0; + } else { + error = -EPERM; + } + yaffs_gross_unlock(dev); } - if (!obj) { - T(YAFFS_TRACE_OS, - (TSTR("yaffs_get_inode for NULL object!!\n"))); - return NULL; + yaffs_trace(YAFFS_TRACE_OS, "yaffs_setattr done returning %d", error); - } + return error; +} - T(YAFFS_TRACE_OS, - (TSTR("yaffs_get_inode for object %d\n"), obj->obj_id)); +static 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; + struct yaffs_dev *dev; + struct yaffs_obj *obj = yaffs_inode_to_obj(inode); - inode = Y_IGET(sb, obj->obj_id); - if (IS_ERR(inode)) - return NULL; + yaffs_trace(YAFFS_TRACE_OS, "yaffs_setxattr of object %d", obj->obj_id); - /* 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! */ + 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); - return inode; + } + yaffs_trace(YAFFS_TRACE_OS, "yaffs_setxattr done returning %d", error); + + return error; } -static ssize_t yaffs_file_write(struct file *f, const char *buf, size_t n, - loff_t *pos) +static ssize_t yaffs_getxattr(struct dentry * dentry, const char *name, + void *buff, size_t size) { - yaffs_obj_t *obj; - int nWritten, ipos; - struct inode *inode; - yaffs_dev_t *dev; + struct inode *inode = dentry->d_inode; + int error = 0; + struct yaffs_dev *dev; + struct yaffs_obj *obj = yaffs_inode_to_obj(inode); - obj = yaffs_dentry_to_obj(f->f_dentry); + yaffs_trace(YAFFS_TRACE_OS, + "yaffs_getxattr \"%s\" from object %d", + name, obj->obj_id); - dev = obj->my_dev; + if (error == 0) { + dev = obj->my_dev; + yaffs_gross_lock(dev); + error = yaffs_get_xattrib(obj, name, buff, size); + yaffs_gross_unlock(dev); - yaffs_gross_lock(dev); + } + yaffs_trace(YAFFS_TRACE_OS, "yaffs_getxattr done returning %d", error); - inode = f->f_dentry->d_inode; + return error; +} - if (!S_ISBLK(inode->i_mode) && f->f_flags & O_APPEND) - ipos = inode->i_size; - else - ipos = *pos; +static int yaffs_removexattr(struct dentry *dentry, const char *name) +{ + struct inode *inode = dentry->d_inode; + int error = 0; + struct yaffs_dev *dev; + struct yaffs_obj *obj = yaffs_inode_to_obj(inode); - 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)); + yaffs_trace(YAFFS_TRACE_OS, + "yaffs_removexattr of object %d", obj->obj_id); - nWritten = yaffs_wr_file(obj, buf, ipos, n, 0); + 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); - yaffs_touch_super(dev); + } + yaffs_trace(YAFFS_TRACE_OS, + "yaffs_removexattr done returning %d", error); - T(YAFFS_TRACE_OS, - (TSTR("yaffs_file_write: %d(%x) bytes written\n"), - (unsigned )n,(unsigned)n)); + return error; +} - if (nWritten > 0) { - ipos += nWritten; - *pos = ipos; - if (ipos > inode->i_size) { - inode->i_size = ipos; - inode->i_blocks = (ipos + 511) >> 9; +static ssize_t yaffs_listxattr(struct dentry * dentry, char *buff, size_t size) +{ + struct inode *inode = dentry->d_inode; + int error = 0; + struct yaffs_dev *dev; + struct yaffs_obj *obj = yaffs_inode_to_obj(inode); - T(YAFFS_TRACE_OS, - (TSTR("yaffs_file_write size updated to %d bytes, " - "%d blocks\n"), - ipos, (int)(inode->i_blocks))); - } + yaffs_trace(YAFFS_TRACE_OS, + "yaffs_listxattr of object %d", 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); } - yaffs_gross_unlock(dev); - return (nWritten == 0) && (n > 0) ? -ENOSPC : nWritten; -} + yaffs_trace(YAFFS_TRACE_OS, + "yaffs_listxattr done returning %d", error); -/* 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 */ + return error; +} -static ssize_t yaffs_hold_space(struct file *f) -{ - yaffs_obj_t *obj; - yaffs_dev_t *dev; - int n_free_chunks; +static const struct inode_operations yaffs_file_inode_operations = { + .setattr = yaffs_setattr, + .setxattr = yaffs_setxattr, + .getxattr = yaffs_getxattr, + .listxattr = yaffs_listxattr, + .removexattr = yaffs_removexattr, +}; - obj = yaffs_dentry_to_obj(f->f_dentry); +static int yaffs_readlink(struct dentry *dentry, char __user * buffer, + int buflen) +{ + unsigned char *alias; + int ret; - dev = obj->my_dev; + struct yaffs_dev *dev = yaffs_dentry_to_obj(dentry)->my_dev; yaffs_gross_lock(dev); - n_free_chunks = yaffs_get_n_free_chunks(dev); + alias = yaffs_get_symlink_alias(yaffs_dentry_to_obj(dentry)); yaffs_gross_unlock(dev); - return (n_free_chunks > 20) ? 1 : 0; + if (!alias) + return -ENOMEM; + + ret = vfs_readlink(dentry, buffer, buflen, alias); + kfree(alias); + return ret; } -static void yaffs_release_space(struct file *f) +#if (YAFFS_NEW_FOLLOW_LINK == 1) +static void *yaffs_follow_link(struct dentry *dentry, struct nameidata *nd) { - yaffs_obj_t *obj; - yaffs_dev_t *dev; - - - obj = yaffs_dentry_to_obj(f->f_dentry); - - dev = obj->my_dev; + void *ret; +#else +static int yaffs_follow_link(struct dentry *dentry, struct nameidata *nd) +{ + int ret +#endif + unsigned char *alias; + int ret_int = 0; + struct yaffs_dev *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_int = -ENOMEM; + goto out; + } +#if (YAFFS_NEW_FOLLOW_LINK == 1) + nd_set_link(nd, alias); + ret = alias; +out: + if (ret_int) + ret = ERR_PTR(ret_int); + return ret; +#else + ret = vfs_follow_link(nd, alias); + kfree(alias); +out: + if (ret_int) + ret = ret_int; + return ret; +#endif +} -static loff_t yaffs_dir_llseek(struct file *file, loff_t offset, int origin) -{ - long long retval; - lock_kernel(); +#ifdef YAFFS_HAS_PUT_INODE - switch (origin){ - case 2: - offset += i_size_read(file->f_path.dentry->d_inode); - break; - case 1: - offset += file->f_pos; - } - retval = -EINVAL; +/* 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) +{ + yaffs_trace(YAFFS_TRACE_OS, + "yaffs_put_inode: ino %d, count %d"), + (int)inode->i_ino, atomic_read(&inode->i_count); - if (offset >= 0){ - if (offset != file->f_pos) - file->f_pos = offset; +} +#endif - retval = offset; - } - unlock_kernel(); - return retval; +#if (YAFFS_NEW_FOLLOW_LINK == 1) +void yaffs_put_link(struct dentry *dentry, struct nameidata *nd, void *alias) +{ + kfree(alias); } +#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, + .setxattr = yaffs_setxattr, + .getxattr = yaffs_getxattr, + .listxattr = yaffs_listxattr, + .removexattr = yaffs_removexattr, +}; +#ifdef YAFFS_USE_OWN_IGET -static int yaffs_readdir(struct file *f, void *dirent, filldir_t filldir) +static struct inode *yaffs_iget(struct super_block *sb, unsigned long ino) { - 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; + struct inode *inode; + struct yaffs_obj *obj; + struct yaffs_dev *dev = yaffs_super_to_dev(sb); - char name[YAFFS_MAX_NAME_LENGTH + 1]; + yaffs_trace(YAFFS_TRACE_OS, "yaffs_iget for %lu", ino); - obj = yaffs_dentry_to_obj(f->f_dentry); - dev = obj->my_dev; + 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); - yaffs_dev_to_lc(dev)->readdirProcess = current; + obj = yaffs_find_by_number(dev, inode->i_ino); - offset = f->f_pos; + yaffs_fill_inode_from_obj(inode, obj); - sc = yaffs_NewSearch(obj); - if(!sc){ - retVal = -ENOMEM; - goto out; - } + yaffs_gross_unlock(dev); - T(YAFFS_TRACE_OS, (TSTR("yaffs_readdir: starting at %d\n"), (int)offset)); + unlock_new_inode(inode); + return inode; +} - 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; - } +#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. + */ + + struct yaffs_obj *obj; + struct yaffs_dev *dev = yaffs_super_to_dev(inode->i_sb); + + yaffs_trace(YAFFS_TRACE_OS, + "yaffs_read_inode for %d", (int)inode->i_ino); + + if (current != yaffs_dev_to_lc(dev)->readdir_process) 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)); + + obj = yaffs_find_by_number(dev, inode->i_ino); + + yaffs_fill_inode_from_obj(inode, obj); + + if (current != yaffs_dev_to_lc(dev)->readdir_process) 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; +#endif - /* 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))); +struct inode *yaffs_get_inode(struct super_block *sb, int mode, int dev, + struct yaffs_obj *obj) +{ + struct inode *inode; - yaffs_gross_unlock(dev); + if (!sb) { + yaffs_trace(YAFFS_TRACE_OS, + "yaffs_get_inode for NULL super_block!!"); + return NULL; - if (filldir(dirent, - name, - strlen(name), - offset, - this_inode, - this_type) < 0){ - yaffs_gross_lock(dev); - goto out; - } + } - yaffs_gross_lock(dev); + if (!obj) { + yaffs_trace(YAFFS_TRACE_OS, + "yaffs_get_inode for NULL object!!"); + return NULL; - offset++; - f->f_pos++; - } - yaffs_search_advance(sc); } -out: - yaffs_search_end(sc); - yaffs_dev_to_lc(dev)->readdirProcess = NULL; - yaffs_gross_unlock(dev); + yaffs_trace(YAFFS_TRACE_OS, + "yaffs_get_inode for object %d", obj->obj_id); - return retVal; -} + 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 gross_lock or deadlock will happen! */ + + return inode; +} -/* - * File creation. Allocate an inode, and we're done.. - */ #if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 29) #define YCRED(x) x @@ -1680,41 +1206,45 @@ out: #define YCRED(x) (x->cred) #endif -#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) +#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 4, 0)) +static int yaffs_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, + dev_t rdev) +#elif (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) static int yaffs_mknod(struct inode *dir, struct dentry *dentry, int mode, - dev_t rdev) + dev_t rdev) #else static int yaffs_mknod(struct inode *dir, struct dentry *dentry, int mode, - int rdev) + int rdev) #endif { struct inode *inode; - yaffs_obj_t *obj = NULL; - yaffs_dev_t *dev; + struct yaffs_obj *obj = NULL; + struct yaffs_dev *dev; - yaffs_obj_t *parent = yaffs_InodeToObject(dir); + struct yaffs_obj *parent = yaffs_inode_to_obj(dir); int error = -ENOSPC; uid_t uid = YCRED(current)->fsuid; - gid_t gid = (dir->i_mode & S_ISGID) ? dir->i_gid : YCRED(current)->fsgid; + 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)); + yaffs_trace(YAFFS_TRACE_OS, + "yaffs_mknod: parent object %d type %d", + parent->obj_id, parent->variant_type); } else { - T(YAFFS_TRACE_OS, - (TSTR("yaffs_mknod: could not get parent object\n"))); + yaffs_trace(YAFFS_TRACE_OS, + "yaffs_mknod: could not get parent object"); return -EPERM; } - T(YAFFS_TRACE_OS, (TSTR("yaffs_mknod: making oject for %s, " - "mode %x dev %x\n"), - dentry->d_name.name, mode, rdev)); + yaffs_trace(YAFFS_TRACE_OS, + "yaffs_mknod: making oject for %s, mode %x dev %x", + dentry->d_name.name, mode, rdev); dev = parent->my_dev; @@ -1723,28 +1253,29 @@ static int yaffs_mknod(struct inode *dir, struct dentry *dentry, int mode, switch (mode & S_IFMT) { default: /* Special (socket, fifo, device...) */ - T(YAFFS_TRACE_OS, (TSTR("yaffs_mknod: making special\n"))); + yaffs_trace(YAFFS_TRACE_OS, "yaffs_mknod: making special"); #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)); + 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); + 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"))); + yaffs_trace(YAFFS_TRACE_OS, "yaffs_mknod: making file"); obj = yaffs_create_file(parent, dentry->d_name.name, mode, uid, - gid); + gid); break; case S_IFDIR: /* directory */ - T(YAFFS_TRACE_OS, - (TSTR("yaffs_mknod: making directory\n"))); + yaffs_trace(YAFFS_TRACE_OS, "yaffs_mknod: making directory"); obj = yaffs_create_dir(parent, dentry->d_name.name, mode, - uid, gid); + uid, gid); break; case S_IFLNK: /* symlink */ - T(YAFFS_TRACE_OS, (TSTR("yaffs_mknod: making symlink\n"))); + yaffs_trace(YAFFS_TRACE_OS, "yaffs_mknod: making symlink"); obj = NULL; /* Do we ever get here? */ break; } @@ -1756,104 +1287,131 @@ static int yaffs_mknod(struct inode *dir, struct dentry *dentry, int mode, 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))); + yaffs_trace(YAFFS_TRACE_OS, + "yaffs_mknod created object %d count = %d", + obj->obj_id, atomic_read(&inode->i_count)); error = 0; - yaffs_fill_inode_from_obj(dir,parent); + yaffs_fill_inode_from_obj(dir, parent); } else { - T(YAFFS_TRACE_OS, - (TSTR("yaffs_mknod failed making object\n"))); + yaffs_trace(YAFFS_TRACE_OS, "yaffs_mknod failed making object"); error = -ENOMEM; } return error; } +#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 4, 0)) +static int yaffs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode) +#else static int yaffs_mkdir(struct inode *dir, struct dentry *dentry, int mode) +#endif { - int retVal; - T(YAFFS_TRACE_OS, (TSTR("yaffs_mkdir\n"))); - retVal = yaffs_mknod(dir, dentry, mode | S_IFDIR, 0); - return retVal; + int ret_val; + yaffs_trace(YAFFS_TRACE_OS, "yaffs_mkdir"); + ret_val = yaffs_mknod(dir, dentry, mode | S_IFDIR, 0); + return ret_val; } -#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) + +#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 6, 0)) +static int yaffs_create(struct inode *dir, struct dentry *dentry, umode_t mode, + bool dummy) +#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 4, 0)) +static int yaffs_create(struct inode *dir, struct dentry *dentry, umode_t mode, + struct nameidata *n) +#elif (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"))); + yaffs_trace(YAFFS_TRACE_OS, "yaffs_create"); return yaffs_mknod(dir, dentry, mode | S_IFREG, 0); } -static int yaffs_unlink(struct inode *dir, struct dentry *dentry) +#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 6, 0)) +static struct dentry *yaffs_lookup(struct inode *dir, struct dentry *dentry, + unsigned int dummy) +#elif (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 { - int retVal; + struct yaffs_obj *obj; + struct inode *inode = NULL; /* NCB 2.5/2.6 needs NULL here */ - yaffs_dev_t *dev; - yaffs_obj_t *obj; + struct yaffs_dev *dev = yaffs_inode_to_obj(dir)->my_dev; - 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; + if (current != yaffs_dev_to_lc(dev)->readdir_process) + yaffs_gross_lock(dev); - yaffs_gross_lock(dev); + yaffs_trace(YAFFS_TRACE_OS, "yaffs_lookup for %d:%s", + yaffs_inode_to_obj(dir)->obj_id, dentry->d_name.name); - retVal = yaffs_unlinker(obj, dentry->d_name.name); + obj = yaffs_find_by_name(yaffs_inode_to_obj(dir), dentry->d_name.name); - if (retVal == YAFFS_OK) { - dentry->d_inode->i_nlink--; - dir->i_version++; + 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)->readdir_process) yaffs_gross_unlock(dev); - mark_inode_dirty(dentry->d_inode); - update_dir_time(dir); - return 0; + + if (obj) { + yaffs_trace(YAFFS_TRACE_OS, + "yaffs_lookup found %d", obj->obj_id); + + inode = yaffs_get_inode(dir->i_sb, obj->yst_mode, 0, obj); + } else { + yaffs_trace(YAFFS_TRACE_OS, "yaffs_lookup not found"); + } - yaffs_gross_unlock(dev); - return -ENOTEMPTY; + +/* added NCB for 2.5/6 compatability - forces add even if inode is + * NULL which creates dentry hash */ + d_add(dentry, inode); + + return NULL; } /* * Create a link... */ static int yaffs_link(struct dentry *old_dentry, struct inode *dir, - struct dentry *dentry) + struct dentry *dentry) { struct inode *inode = old_dentry->d_inode; - yaffs_obj_t *obj = NULL; - yaffs_obj_t *link = NULL; - yaffs_dev_t *dev; + struct yaffs_obj *obj = NULL; + struct yaffs_obj *link = NULL; + struct yaffs_dev *dev; - T(YAFFS_TRACE_OS, (TSTR("yaffs_link\n"))); + yaffs_trace(YAFFS_TRACE_OS, "yaffs_link"); - obj = yaffs_InodeToObject(inode); + obj = yaffs_inode_to_obj(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 (!S_ISDIR(inode->i_mode)) /* Don't link directories */ + link = + yaffs_link_obj(yaffs_inode_to_obj(dir), dentry->d_name.name, + obj); if (link) { - old_dentry->d_inode->i_nlink = yaffs_get_obj_link_count(obj); + set_nlink(old_dentry->d_inode, 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"), + yaffs_trace(YAFFS_TRACE_OS, + "yaffs_link link count %d i_count %d", old_dentry->d_inode->i_nlink, - atomic_read(&old_dentry->d_inode->i_count))); + atomic_read(&old_dentry->d_inode->i_count)); } yaffs_gross_unlock(dev); - if (link){ + if (link) { update_dir_time(dir); return 0; } @@ -1862,19 +1420,28 @@ static int yaffs_link(struct dentry *old_dentry, struct inode *dir, } static int yaffs_symlink(struct inode *dir, struct dentry *dentry, - const char *symname) + const char *symname) { - yaffs_obj_t *obj; - yaffs_dev_t *dev; + struct yaffs_obj *obj; + struct yaffs_dev *dev; uid_t uid = YCRED(current)->fsuid; - gid_t gid = (dir->i_mode & S_ISGID) ? dir->i_gid : YCRED(current)->fsgid; + gid_t gid = + (dir->i_mode & S_ISGID) ? dir->i_gid : YCRED(current)->fsgid; - T(YAFFS_TRACE_OS, (TSTR("yaffs_symlink\n"))); + yaffs_trace(YAFFS_TRACE_OS, "yaffs_symlink"); - dev = yaffs_InodeToObject(dir)->my_dev; + if (strnlen(dentry->d_name.name, YAFFS_MAX_NAME_LENGTH + 1) > + YAFFS_MAX_NAME_LENGTH) + return -ENAMETOOLONG; + + if (strnlen(symname, YAFFS_MAX_ALIAS_LENGTH + 1) > + YAFFS_MAX_ALIAS_LENGTH) + return -ENAMETOOLONG; + + dev = yaffs_inode_to_obj(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); + obj = yaffs_create_symlink(yaffs_inode_to_obj(dir), dentry->d_name.name, + S_IFLNK | S_IRWXUGO, uid, gid, symname); yaffs_gross_unlock(dev); if (obj) { @@ -1883,41 +1450,15 @@ static int yaffs_symlink(struct inode *dir, struct dentry *dentry, 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"))); + yaffs_trace(YAFFS_TRACE_OS, "symlink created OK"); return 0; } else { - T(YAFFS_TRACE_OS, (TSTR("symlink not created\n"))); + yaffs_trace(YAFFS_TRACE_OS, "symlink not created"); } 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. * @@ -1926,46 +1467,42 @@ static int yaffs_sync_object(struct file *file, struct dentry *dentry, 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; + struct yaffs_dev *dev; + int ret_val = YAFFS_FAIL; + struct yaffs_obj *target; - T(YAFFS_TRACE_OS, (TSTR("yaffs_rename\n"))); - dev = yaffs_InodeToObject(old_dir)->my_dev; + yaffs_trace(YAFFS_TRACE_OS, "yaffs_rename"); + dev = yaffs_inode_to_obj(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); - - + target = yaffs_find_by_name(yaffs_inode_to_obj(new_dir), + new_dentry->d_name.name); if (target && target->variant_type == YAFFS_OBJECT_TYPE_DIRECTORY && - !ylist_empty(&target->variant.dir_variant.children)) { + !list_empty(&target->variant.dir_variant.children)) { - T(YAFFS_TRACE_OS, (TSTR("target is non-empty dir\n"))); + yaffs_trace(YAFFS_TRACE_OS, "target is non-empty dir"); - retVal = YAFFS_FAIL; + ret_val = YAFFS_FAIL; } else { /* Now does unlinking internally using shadowing mechanism */ - T(YAFFS_TRACE_OS, (TSTR("calling yaffs_rename_obj\n"))); + yaffs_trace(YAFFS_TRACE_OS, "calling yaffs_rename_obj"); - retVal = yaffs_rename_obj(yaffs_InodeToObject(old_dir), - old_dentry->d_name.name, - yaffs_InodeToObject(new_dir), - new_dentry->d_name.name); + ret_val = yaffs_rename_obj(yaffs_inode_to_obj(old_dir), + old_dentry->d_name.name, + yaffs_inode_to_obj(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); - } - + if (ret_val == YAFFS_OK) { + if (target) + inode_dec_link_count(new_dentry->d_inode); + update_dir_time(old_dir); - if(old_dir != new_dir) + if (old_dir != new_dir) update_dir_time(new_dir); return 0; } else { @@ -1973,338 +1510,427 @@ static int yaffs_rename(struct inode *old_dir, struct dentry *old_dentry, } } -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)); +static int yaffs_unlink(struct inode *dir, struct dentry *dentry) +{ + int ret_val; - return error; -} + struct yaffs_dev *dev; + struct yaffs_obj *obj; -#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); + yaffs_trace(YAFFS_TRACE_OS, "yaffs_unlink %d:%s", + (int)(dir->i_ino), dentry->d_name.name); + obj = yaffs_inode_to_obj(dir); + dev = obj->my_dev; - T(YAFFS_TRACE_OS, - (TSTR("yaffs_setxattr of object %d\n"), - obj->obj_id)); + yaffs_gross_lock(dev); + ret_val = yaffs_unlinker(obj, dentry->d_name.name); - 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; + if (ret_val == YAFFS_OK) { + inode_dec_link_count(dentry->d_inode); + dir->i_version++; yaffs_gross_unlock(dev); - + update_dir_time(dir); + return 0; } - T(YAFFS_TRACE_OS, - (TSTR("yaffs_setxattr done returning %d\n"),error)); - - return error; + yaffs_gross_unlock(dev); + return -ENOTEMPTY; } -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)); +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, + .setxattr = yaffs_setxattr, + .getxattr = yaffs_getxattr, + .listxattr = yaffs_listxattr, + .removexattr = yaffs_removexattr, +}; - if (error == 0) { - dev = obj->my_dev; - yaffs_gross_lock(dev); - error = yaffs_get_xattrib(obj, name, buff, size); - yaffs_gross_unlock(dev); +/*-----------------------------------------------------------------*/ +/* 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 struct yaffs_dev 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. + */ - } - T(YAFFS_TRACE_OS, - (TSTR("yaffs_getxattr done returning %d\n"),error)); +struct yaffs_search_context { + struct yaffs_dev *dev; + struct yaffs_obj *dir_obj; + struct yaffs_obj *next_return; + struct list_head others; +}; - return error; +/* + * yaffs_new_search() 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_search_context *yaffs_new_search(struct yaffs_obj *dir) +{ + struct yaffs_dev *dev = dir->my_dev; + struct yaffs_search_context *sc = + kmalloc(sizeof(struct yaffs_search_context), GFP_NOFS); + if (sc) { + sc->dir_obj = dir; + sc->dev = dev; + if (list_empty(&sc->dir_obj->variant.dir_variant.children)) + sc->next_return = NULL; + else + sc->next_return = + list_entry(dir->variant.dir_variant.children.next, + struct yaffs_obj, siblings); + INIT_LIST_HEAD(&sc->others); + list_add(&sc->others, &(yaffs_dev_to_lc(dev)->search_contexts)); + } + return sc; } -int yaffs_removexattr(struct dentry *dentry, const char *name) +/* + * yaffs_search_end() disposes of a search context and cleans up. + */ +static void yaffs_search_end(struct yaffs_search_context *sc) { - 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 (sc) { + list_del(&sc->others); + kfree(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_search_context *sc) +{ + if (!sc) + return; - 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); + if (sc->next_return == NULL || + list_empty(&sc->dir_obj->variant.dir_variant.children)) + sc->next_return = NULL; + else { + struct list_head *next = sc->next_return->siblings.next; + if (next == &sc->dir_obj->variant.dir_variant.children) + sc->next_return = NULL; /* end of list */ + else + sc->next_return = + list_entry(next, struct yaffs_obj, siblings); } - 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) +/* + * 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(struct yaffs_obj *obj) { - 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); + struct list_head *i; + struct yaffs_search_context *sc; + struct list_head *search_contexts = + &(yaffs_dev_to_lc(obj->my_dev)->search_contexts); + /* 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. + */ + list_for_each(i, search_contexts) { + sc = list_entry(i, struct yaffs_search_context, others); + if (sc->next_return == obj) + yaffs_search_advance(sc); } - 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) +static int yaffs_readdir(struct file *f, void *dirent, filldir_t filldir) { - yaffs_dev_t *dev = yaffs_SuperToDevice(sb); -#endif + struct yaffs_obj *obj; + struct yaffs_dev *dev; + struct yaffs_search_context *sc; + struct inode *inode = f->f_dentry->d_inode; + unsigned long offset, curoffs; + struct yaffs_obj *l; + int ret_val = 0; + + char name[YAFFS_MAX_NAME_LENGTH + 1]; - T(YAFFS_TRACE_OS, (TSTR("yaffs_statfs\n"))); + obj = yaffs_dentry_to_obj(f->f_dentry); + dev = obj->my_dev; yaffs_gross_lock(dev); - buf->f_type = YAFFS_MAGIC; - buf->f_bsize = sb->s_blocksize; - buf->f_namelen = 255; + yaffs_dev_to_lc(dev)->readdir_process = current; - if (dev->data_bytes_per_chunk & (dev->data_bytes_per_chunk - 1)) { - /* Do this if chunk size is not a power of 2 */ + offset = f->f_pos; - uint64_t bytesInDev; - uint64_t bytesFree; + sc = yaffs_new_search(obj); + if (!sc) { + ret_val = -ENOMEM; + goto out; + } - bytesInDev = ((uint64_t)((dev->param.end_block - dev->param.start_block + 1))) * - ((uint64_t)(dev->param.chunks_per_block * dev->data_bytes_per_chunk)); + yaffs_trace(YAFFS_TRACE_OS, + "yaffs_readdir: starting at %d", (int)offset); - do_div(bytesInDev, sb->s_blocksize); /* bytesInDev becomes the number of blocks */ - buf->f_blocks = bytesInDev; + if (offset == 0) { + yaffs_trace(YAFFS_TRACE_OS, + "yaffs_readdir: entry . ino %d", + (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) { + yaffs_trace(YAFFS_TRACE_OS, + "yaffs_readdir: entry .. ino %d", + (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++; + } - bytesFree = ((uint64_t)(yaffs_get_n_free_chunks(dev))) * - ((uint64_t)(dev->data_bytes_per_chunk)); + curoffs = 1; - do_div(bytesFree, sb->s_blocksize); + /* 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; + } - buf->f_bfree = bytesFree; + while (sc->next_return) { + curoffs++; + l = sc->next_return; + if (curoffs >= offset) { + int this_inode = yaffs_get_obj_inode(l); + int this_type = yaffs_get_obj_type(l); - } else if (sb->s_blocksize > dev->data_bytes_per_chunk) { + yaffs_get_obj_name(l, name, YAFFS_MAX_NAME_LENGTH + 1); + yaffs_trace(YAFFS_TRACE_OS, + "yaffs_readdir: %s inode %d", + name, yaffs_get_obj_inode(l)); - 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); + yaffs_gross_unlock(dev); - buf->f_bfree = - yaffs_get_n_free_chunks(dev) * - (dev->data_bytes_per_chunk / sb->s_blocksize); - } + if (filldir(dirent, + name, + strlen(name), + offset, this_inode, this_type) < 0) { + yaffs_gross_lock(dev); + goto out; + } - buf->f_files = 0; - buf->f_ffree = 0; - buf->f_bavail = buf->f_bfree; + yaffs_gross_lock(dev); + offset++; + f->f_pos++; + } + yaffs_search_advance(sc); + } + +out: + yaffs_search_end(sc); + yaffs_dev_to_lc(dev)->readdir_process = NULL; yaffs_gross_unlock(dev); - return 0; -} + return ret_val; +} +static const struct file_operations yaffs_dir_operations = { + .read = generic_read_dir, + .readdir = yaffs_readdir, + .fsync = yaffs_sync_object, + .llseek = generic_file_llseek, +}; -static void yaffs_flush_inodes(struct super_block *sb) +static void yaffs_fill_inode_from_obj(struct inode *inode, + struct yaffs_obj *obj) { - 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); - } - } -} + 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; + } -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); -} + 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; + } -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 */ + break; + case YAFFS_OBJECT_TYPE_UNKNOWN: + case YAFFS_OBJECT_TYPE_HARDLINK: + case YAFFS_OBJECT_TYPE_SPECIAL: + default: + /* TODO? */ + break; + } - if(erasedChunks < dev->n_free_chunks) - scatteredFree = (dev->n_free_chunks - erasedChunks); + inode->i_flags |= S_NOATIME; - 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; -} + 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)) -static int yaffs_do_sync_fs(struct super_block *sb, - int request_checkpoint) -{ + 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; - 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; + set_nlink(inode, yaffs_get_obj_link_count(obj)); - 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_trace(YAFFS_TRACE_OS, + "yaffs_fill_inode mode %x uid %d gid %d size %lld count %d", + inode->i_mode, inode->i_uid, inode->i_gid, + inode->i_size, atomic_read(&inode->i_count)); - yaffs_gross_lock(dev); - do_checkpoint = ((request_checkpoint && !gc_urgent) || - oneshot_checkpoint) && - !dev->is_checkpointed; + 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; + } - 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_inode_to_obj_lv(inode) = obj; + + obj->my_inode = inode; + + } else { + yaffs_trace(YAFFS_TRACE_OS, + "yaffs_fill_inode invalid parameters"); } - 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: + * 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. */ +static unsigned yaffs_bg_gc_urgency(struct yaffs_dev *dev) +{ + unsigned erased_chunks = + dev->n_erased_blocks * dev->param.chunks_per_block; + struct yaffs_linux_context *context = yaffs_dev_to_lc(dev); + unsigned scattered = 0; /* Free chunks not in an erased block */ + + if (erased_chunks < dev->n_free_chunks) + scattered = (dev->n_free_chunks - erased_chunks); + + if (!context->bg_running) + return 0; + else if (scattered < (dev->param.chunks_per_block * 2)) + return 0; + else if (erased_chunks > dev->n_free_chunks / 2) + return 0; + else if (erased_chunks > dev->n_free_chunks / 4) + return 1; + else + return 2; +} + #ifdef YAFFS_COMPILE_BACKGROUND void yaffs_background_waker(unsigned long data) @@ -2314,74 +1940,74 @@ void yaffs_background_waker(unsigned long 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); + struct yaffs_dev *dev = (struct yaffs_dev *)data; + struct yaffs_linux_context *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; + int gc_result; struct timer_list timer; - T(YAFFS_TRACE_BACKGROUND, - (TSTR("yaffs_background starting for dev %p\n"), - (void *)dev)); + yaffs_trace(YAFFS_TRACE_BACKGROUND, + "yaffs_background starting for dev %p", (void *)dev); #ifdef YAFFS_COMPILE_FREEZER set_freezable(); #endif - while(context->bgRunning){ - T(YAFFS_TRACE_BACKGROUND, - (TSTR("yaffs_background\n"))); + while (context->bg_running) { + yaffs_trace(YAFFS_TRACE_BACKGROUND, "yaffs_background"); - if(kthread_should_stop()) + if (kthread_should_stop()) break; #ifdef YAFFS_COMPILE_FREEZER - if(try_to_freeze()) + if (try_to_freeze()) continue; #endif yaffs_gross_lock(dev); now = jiffies; - if(time_after(now, next_dir_update) && yaffs_bg_enable){ + 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){ + 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; + gc_result = 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 - */ + } 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)) + if (time_before(next_gc, expires)) expires = next_gc; - if(time_before(expires,now)) + if (time_before(expires, now)) expires = now + HZ; Y_INIT_TIMER(&timer); - timer.expires = expires+1; - timer.data = (unsigned long) current; + timer.expires = expires + 1; + timer.data = (unsigned long)current; timer.function = yaffs_background_waker; - set_current_state(TASK_INTERRUPTIBLE); + set_current_state(TASK_INTERRUPTIBLE); add_timer(&timer); schedule(); del_timer_sync(&timer); @@ -2393,36 +2019,37 @@ static int yaffs_bg_thread_fn(void *data) return 0; } -static int yaffs_bg_start(yaffs_dev_t *dev) +static int yaffs_bg_start(struct yaffs_dev *dev) { int retval = 0; - struct yaffs_LinuxContext *context = yaffs_dev_to_lc(dev); + struct yaffs_linux_context *context = yaffs_dev_to_lc(dev); - if(dev->read_only) + if (dev->read_only) return -1; - context->bgRunning = 1; + context->bg_running = 1; - context->bgThread = kthread_run(yaffs_bg_thread_fn, - (void *)dev,"yaffs-bg-%d",context->mount_id); + context->bg_thread = 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; + if (IS_ERR(context->bg_thread)) { + retval = PTR_ERR(context->bg_thread); + context->bg_thread = NULL; + context->bg_running = 0; } return retval; } -static void yaffs_bg_stop(yaffs_dev_t *dev) +static void yaffs_bg_stop(struct yaffs_dev *dev) { - struct yaffs_LinuxContext *ctxt = yaffs_dev_to_lc(dev); + struct yaffs_linux_context *ctxt = yaffs_dev_to_lc(dev); - ctxt->bgRunning = 0; + ctxt->bg_running = 0; - if( ctxt->bgThread){ - kthread_stop(ctxt->bgThread); - ctxt->bgThread = NULL; + if (ctxt->bg_thread) { + kthread_stop(ctxt->bg_thread); + ctxt->bg_thread = NULL; } } #else @@ -2431,177 +2058,445 @@ static int yaffs_bg_thread_fn(void *data) return 0; } -static int yaffs_bg_start(yaffs_dev_t *dev) +static int yaffs_bg_start(struct yaffs_dev *dev) { return 0; } -static void yaffs_bg_stop(yaffs_dev_t *dev) +static void yaffs_bg_stop(struct yaffs_dev *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 +static void yaffs_flush_inodes(struct super_block *sb) { - unsigned request_checkpoint = (yaffs_auto_checkpoint >= 2); + struct inode *iptr; + struct yaffs_obj *obj; + + list_for_each_entry(iptr, &sb->s_inodes, i_sb_list) { + obj = yaffs_inode_to_obj(iptr); + if (obj) { + yaffs_trace(YAFFS_TRACE_OS, + "flushing obj %d", + obj->obj_id); + yaffs_flush_file(obj, 1, 0); + } + } +} - T(YAFFS_TRACE_OS | YAFFS_TRACE_SYNC | YAFFS_TRACE_BACKGROUND, - (TSTR("yaffs_write_super%s\n"), - request_checkpoint ? " checkpt" : "")); +static void yaffs_flush_super(struct super_block *sb, int do_checkpoint) +{ + struct yaffs_dev *dev = yaffs_super_to_dev(sb); + if (!dev) + return; - yaffs_do_sync_fs(sb, request_checkpoint); + yaffs_flush_inodes(sb); + yaffs_update_dirty_dirs(dev); + yaffs_flush_whole_cache(dev); + if (do_checkpoint) + yaffs_checkpoint_save(dev); +} -#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 18)) - return 0; -#endif +static LIST_HEAD(yaffs_context_list); +struct mutex yaffs_context_lock; + +static void yaffs_put_super(struct super_block *sb) +{ + struct yaffs_dev *dev = yaffs_super_to_dev(sb); + struct mtd_info *mtd = yaffs_dev_to_mtd(dev); + + yaffs_trace(YAFFS_TRACE_OS | YAFFS_TRACE_ALWAYS, + "yaffs_put_super"); + + yaffs_trace(YAFFS_TRACE_OS | YAFFS_TRACE_BACKGROUND, + "Shutting down yaffs background thread"); + yaffs_bg_stop(dev); + yaffs_trace(YAFFS_TRACE_OS | YAFFS_TRACE_BACKGROUND, + "yaffs background thread shut down"); + + yaffs_gross_lock(dev); + + yaffs_flush_super(sb, 1); + + yaffs_deinitialise(dev); + + yaffs_gross_unlock(dev); + + mutex_lock(&yaffs_context_lock); + list_del_init(&(yaffs_dev_to_lc(dev)->context_list)); + mutex_unlock(&yaffs_context_lock); + + if (yaffs_dev_to_lc(dev)->spare_buffer) { + kfree(yaffs_dev_to_lc(dev)->spare_buffer); + yaffs_dev_to_lc(dev)->spare_buffer = NULL; + } + + kfree(dev); + + yaffs_put_mtd_device(mtd); + + yaffs_trace(YAFFS_TRACE_OS | YAFFS_TRACE_ALWAYS, + "yaffs_put_super done"); } -#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 +static unsigned yaffs_gc_control_callback(struct yaffs_dev *dev) { - unsigned request_checkpoint = (yaffs_auto_checkpoint >= 1); + return yaffs_gc_control; +} - T(YAFFS_TRACE_OS | YAFFS_TRACE_SYNC, - (TSTR("yaffs_sync_fs%s\n"), - request_checkpoint ? " checkpt" : "")); - yaffs_do_sync_fs(sb, request_checkpoint); +#ifdef YAFFS_COMPILE_EXPORTFS - return 0; +static struct inode *yaffs2_nfs_get_inode(struct super_block *sb, uint64_t ino, + uint32_t generation) +{ + return Y_IGET(sb, ino); } -#ifdef YAFFS_USE_OWN_IGET +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 inode *yaffs_iget(struct super_block *sb, unsigned long ino) +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; - yaffs_obj_t *obj; - yaffs_dev_t *dev = yaffs_SuperToDevice(sb); + unsigned long parent_ino; + struct yaffs_obj *d_obj; + struct yaffs_obj *parent_obj; - T(YAFFS_TRACE_OS, - (TSTR("yaffs_iget for %lu\n"), ino)); + d_obj = yaffs_inode_to_obj(dentry->d_inode); - inode = iget_locked(sb, ino); - if (!inode) - return ERR_PTR(-ENOMEM); - if (!(inode->i_state & I_NEW)) - return 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); - /* 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. - */ + if (IS_ERR(inode)) { + parent = ERR_CAST(inode); + } else { + parent = d_obtain_alias(inode); + if (!IS_ERR(parent)) { + parent = ERR_PTR(-ENOMEM); + iput(inode); + } + } + } + } - yaffs_gross_lock(dev); + return parent; +} - obj = yaffs_find_by_number(dev, inode->i_ino); +/* Just declare a zero structure as a NULL value implies + * using the default functions of exportfs. + */ - yaffs_fill_inode_from_obj(inode, obj); +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, +}; - yaffs_gross_unlock(dev); +#endif - unlock_new_inode(inode); - return inode; +static void yaffs_unstitch_obj(struct inode *inode, struct yaffs_obj *obj) +{ + /* Clear the association between the inode and + * the struct yaffs_obj. + */ + obj->my_inode = NULL; + yaffs_inode_to_obj_lv(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) +{ + struct yaffs_obj *obj; + struct yaffs_dev *dev; + int deleteme = 0; + + obj = yaffs_inode_to_obj(inode); + + yaffs_trace(YAFFS_TRACE_OS, + "yaffs_evict_inode: ino %d, count %d %s", + (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); + Y_CLEAR_INODE(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 -static void yaffs_read_inode(struct inode *inode) +/* 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) { - /* 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. - */ + struct yaffs_obj *obj; + struct yaffs_dev *dev; - yaffs_obj_t *obj; - yaffs_dev_t *dev = yaffs_SuperToDevice(inode->i_sb); + obj = yaffs_inode_to_obj(inode); - T(YAFFS_TRACE_OS, - (TSTR("yaffs_read_inode for %d\n"), (int)inode->i_ino)); + yaffs_trace(YAFFS_TRACE_OS, + "yaffs_clear_inode: ino %d, count %d %s", + (int)inode->i_ino, atomic_read(&inode->i_count), + obj ? "object exists" : "null object"); - if(current != yaffs_dev_to_lc(dev)->readdirProcess) + if (obj) { + dev = obj->my_dev; yaffs_gross_lock(dev); + yaffs_unstitch_obj(inode, obj); + yaffs_gross_unlock(dev); + } - obj = yaffs_find_by_number(dev, inode->i_ino); +} - yaffs_fill_inode_from_obj(inode, obj); +/* 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) +{ + struct yaffs_obj *obj = yaffs_inode_to_obj(inode); + struct yaffs_dev *dev; + + yaffs_trace(YAFFS_TRACE_OS, + "yaffs_delete_inode: ino %d, count %d %s", + (int)inode->i_ino, atomic_read(&inode->i_count), + obj ? "object exists" : "null object"); - if(current != yaffs_dev_to_lc(dev)->readdirProcess) + 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 -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"))); +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) +static int yaffs_statfs(struct dentry *dentry, struct kstatfs *buf) +{ + struct yaffs_dev *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) +{ + struct yaffs_dev *dev = yaffs_super_to_dev(sb); +#else +static int yaffs_statfs(struct super_block *sb, struct statfs *buf) +{ + struct yaffs_dev *dev = yaffs_super_to_dev(sb); +#endif + + yaffs_trace(YAFFS_TRACE_OS, "yaffs_statfs"); yaffs_gross_lock(dev); - yaffs_flush_super(sb,1); + buf->f_type = YAFFS_MAGIC; + buf->f_bsize = sb->s_blocksize; + buf->f_namelen = 255; - if (yaffs_dev_to_lc(dev)->putSuperFunc) - yaffs_dev_to_lc(dev)->putSuperFunc(sb); + 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 bytes_in_dev; + uint64_t bytes_free; - yaffs_deinitialise(dev); + bytes_in_dev = + ((uint64_t) + ((dev->param.end_block - dev->param.start_block + + 1))) * ((uint64_t) (dev->param.chunks_per_block * + dev->data_bytes_per_chunk)); - yaffs_gross_unlock(dev); + do_div(bytes_in_dev, sb->s_blocksize); /* bytes_in_dev becomes the number of blocks */ + buf->f_blocks = bytes_in_dev; + + bytes_free = ((uint64_t) (yaffs_get_n_free_chunks(dev))) * + ((uint64_t) (dev->data_bytes_per_chunk)); + + do_div(bytes_free, sb->s_blocksize); + + buf->f_bfree = bytes_free; - down(&yaffs_context_lock); - ylist_del_init(&(yaffs_dev_to_lc(dev)->contextList)); - up(&yaffs_context_lock); + } else if (sb->s_blocksize > dev->data_bytes_per_chunk) { - if (yaffs_dev_to_lc(dev)->spareBuffer) { - YFREE(yaffs_dev_to_lc(dev)->spareBuffer); - yaffs_dev_to_lc(dev)->spareBuffer = NULL; + 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); } - kfree(dev); + buf->f_files = 0; + buf->f_ffree = 0; + buf->f_bavail = buf->f_bfree; + + yaffs_gross_unlock(dev); + return 0; } -static void yaffs_MTDPutSuper(struct super_block *sb) + +static int yaffs_do_sync_fs(struct super_block *sb, int request_checkpoint) { - struct mtd_info *mtd = yaffs_dev_to_mtd(yaffs_SuperToDevice(sb)); - if (mtd->sync) - mtd->sync(mtd); + struct yaffs_dev *dev = yaffs_super_to_dev(sb); + unsigned int oneshot_checkpoint = (yaffs_auto_checkpoint & 4); + unsigned gc_urgent = yaffs_bg_gc_urgency(dev); + int do_checkpoint; + int dirty = yaffs_check_super_dirty(dev); + + yaffs_trace(YAFFS_TRACE_OS | YAFFS_TRACE_SYNC | YAFFS_TRACE_BACKGROUND, + "yaffs_do_sync_fs: gc-urgency %d %s %s%s", + gc_urgent, + dirty ? "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; - put_mtd_device(mtd); + if (dirty || do_checkpoint) { + yaffs_flush_super(sb, !dev->is_checkpointed && do_checkpoint); + yaffs_clear_super_dirty(dev); + if (oneshot_checkpoint) + yaffs_auto_checkpoint &= ~4; + } + yaffs_gross_unlock(dev); + + return 0; } -static void yaffs_touch_super(yaffs_dev_t *dev) +#ifdef YAFFS_HAS_WRITE_SUPER +#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); + + yaffs_trace(YAFFS_TRACE_OS | YAFFS_TRACE_SYNC | YAFFS_TRACE_BACKGROUND, + "yaffs_write_super %s", + request_checkpoint ? " checkpt" : ""); + + yaffs_do_sync_fs(sb, request_checkpoint); + +#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 18)) + return 0; +#endif +} +#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 { - struct super_block *sb = yaffs_dev_to_lc(dev)->superBlock; + unsigned request_checkpoint = (yaffs_auto_checkpoint >= 1); + + yaffs_trace(YAFFS_TRACE_OS | YAFFS_TRACE_SYNC, + "yaffs_sync_fs%s", request_checkpoint ? " checkpt" : ""); - T(YAFFS_TRACE_OS, (TSTR("yaffs_touch_super() sb = %p\n"), sb)); - if (sb) - sb->s_dirt = 1; + yaffs_do_sync_fs(sb, request_checkpoint); + + return 0; } -typedef struct { + + +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, +#ifdef YAFFS_HAS_WRITE_SUPER + .write_super = yaffs_write_super, +#endif +}; + +struct yaffs_options { int inband_tags; int skip_checkpoint_read; int skip_checkpoint_write; @@ -2612,10 +2507,12 @@ typedef struct { int lazy_loading_overridden; int empty_lost_and_found; int empty_lost_and_found_overridden; -} yaffs_options; + int disable_summary; +}; #define MAX_OPT_LEN 30 -static int yaffs_parse_options(yaffs_options *options, const char *options_str) +static int yaffs_parse_options(struct yaffs_options *options, + const char *options_str) { char cur_opt[MAX_OPT_LEN + 1]; int p; @@ -2627,7 +2524,7 @@ static int yaffs_parse_options(yaffs_options *options, const char *options_str) memset(cur_opt, 0, MAX_OPT_LEN + 1); p = 0; - while(*options_str == ',') + while (*options_str == ',') options_str++; while (*options_str && *options_str != ',') { @@ -2638,38 +2535,40 @@ static int yaffs_parse_options(yaffs_options *options, const char *options_str) options_str++; } - if (!strcmp(cur_opt, "inband-tags")) + if (!strcmp(cur_opt, "inband-tags")) { options->inband_tags = 1; - else if (!strcmp(cur_opt, "tags-ecc-off")){ + } 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_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")){ + } 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_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")){ + } else if (!strcmp(cur_opt, "disable-summary")) { + options->disable_summary = 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_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->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")) + } else if (!strcmp(cur_opt, "no-checkpoint-read")) { options->skip_checkpoint_read = 1; - else if (!strcmp(cur_opt, "no-checkpoint-write")) + } else if (!strcmp(cur_opt, "no-checkpoint-write")) { options->skip_checkpoint_write = 1; - else if (!strcmp(cur_opt, "no-checkpoint")) { + } 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); + cur_opt); error = 1; } } @@ -2677,52 +2576,72 @@ static int yaffs_parse_options(yaffs_options *options, const char *options_str) return error; } + +static struct dentry *yaffs_make_root(struct inode *inode) +{ +#if (LINUX_VERSION_CODE < KERNEL_VERSION(3, 4, 0)) + struct dentry *root = d_alloc_root(inode); + + if (!root) + iput(inode); + + return root; +#else + return d_make_root(inode); +#endif +} + + + + static struct super_block *yaffs_internal_read_super(int yaffs_version, - struct super_block *sb, - void *data, int silent) + struct super_block *sb, + void *data, int silent) { - int nBlocks; + int n_blocks; struct inode *inode = NULL; struct dentry *root; - yaffs_dev_t *dev = 0; + struct yaffs_dev *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; + struct yaffs_linux_context *context = NULL; + struct yaffs_param *param; int read_only = 0; + int inband_tags = 0; - yaffs_options options; + struct yaffs_options options; unsigned mount_id; int found; - struct yaffs_LinuxContext *context_iterator; - struct ylist_head *l; + struct yaffs_linux_context *context_iterator; + struct list_head *l; + + if (!sb) { + printk(KERN_INFO "yaffs: sb is NULL\n"); + return NULL; + } sb->s_magic = YAFFS_MAGIC; sb->s_op = &yaffs_super_ops; sb->s_flags |= MS_NOATIME; - read_only =((sb->s_flags & MS_RDONLY) != 0); - + 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) + 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"); + yaffs_devname(sb, devname_buf), read_only ? "ro" : "rw"); if (!data_str) data_str = ""; @@ -2736,145 +2655,67 @@ static struct super_block *yaffs_internal_read_super(int yaffs_version, 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))); + yaffs_trace(YAFFS_TRACE_OS, + "yaffs_read_super: Using yaffs%d", yaffs_version); + yaffs_trace(YAFFS_TRACE_OS, + "yaffs_read_super: block size %d", (int)(sb->s_blocksize)); - /* Check it's an mtd device..... */ - if (MAJOR(sb->s_dev) != MTD_BLOCK_MAJOR) - return NULL; /* This isn't an mtd device */ + yaffs_trace(YAFFS_TRACE_ALWAYS, + "yaffs: Attempting MTD mount of %u.%u,\"%s\"", + MAJOR(sb->s_dev), MINOR(sb->s_dev), + yaffs_devname(sb, devname_buf)); /* 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))); + yaffs_trace(YAFFS_TRACE_ALWAYS, + "yaffs: MTD device %u either not valid or unavailable", + 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"))); + if (yaffs_auto_select && yaffs_version == 1 && WRITE_SIZE(mtd) >= 2048) { + yaffs_trace(YAFFS_TRACE_ALWAYS, "auto selecting yaffs2"); 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"))); + if (yaffs_version == 2 && !options.inband_tags + && WRITE_SIZE(mtd) == 512) { + yaffs_trace(YAFFS_TRACE_ALWAYS, "auto selecting yaffs1"); 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 (mtd->oobavail < sizeof(struct yaffs_packed_tags2) || + options.inband_tags) + inband_tags = 1; - 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; - } - } + if(yaffs_verify_mtd(mtd, yaffs_version, inband_tags) < 0) + 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 + * Set the struct yaffs_dev up for mtd */ - if (!read_only && !(mtd->flags & MTD_WRITEABLE)){ + if (!read_only && !(mtd->flags & MTD_WRITEABLE)) { read_only = 1; - printk(KERN_INFO "yaffs: mtd is read only, setting superblock read only"); + printk(KERN_INFO + "yaffs: mtd is read only, setting superblock read only\n" + ); 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) + dev = kmalloc(sizeof(struct yaffs_dev), GFP_KERNEL); + context = kmalloc(sizeof(struct yaffs_linux_context), GFP_KERNEL); + + if (!dev || !context) { + if (dev) kfree(dev); - if(context) + if (context) kfree(context); dev = NULL; context = NULL; @@ -2882,19 +2723,19 @@ static struct super_block *yaffs_internal_read_super(int yaffs_version, 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"))); + yaffs_trace(YAFFS_TRACE_ALWAYS, + "yaffs_read_super: Failed trying to allocate struct yaffs_dev." + ); return NULL; } - memset(dev, 0, sizeof(yaffs_dev_t)); + memset(dev, 0, sizeof(struct yaffs_dev)); param = &(dev->param); - memset(context,0,sizeof(struct yaffs_LinuxContext)); + memset(context, 0, sizeof(struct yaffs_linux_context)); dev->os_context = context; - YINIT_LIST_HEAD(&(context->contextList)); + INIT_LIST_HEAD(&(context->context_list)); context->dev = dev; - context->superBlock = sb; + context->super = sb; dev->read_only = read_only; @@ -2903,69 +2744,40 @@ static struct super_block *yaffs_internal_read_super(int yaffs_version, #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; + param->inband_tags = 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) + 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) + 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 + param->disable_summary = options.disable_summary; -#ifdef CONFIG_YAFFS__ALWAYS_CHECK_CHUNK_ERASED - param->always_check_erased = 1; -#endif - if(options.empty_lost_and_found_overridden) +#ifdef CONFIG_YAFFS_DISABLE_BAD_BLOCK_MARKING + param->disable_bad_block_marking = 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; @@ -2974,92 +2786,81 @@ static struct super_block *yaffs_internal_read_super(int yaffs_version, param->total_bytes_per_chunk = mtd->oobblock; param->chunks_per_block = mtd->erasesize / mtd->oobblock; #endif - nBlocks = YCALCBLOCKS(mtd->size, mtd->erasesize); + n_blocks = YCALCBLOCKS(mtd->size, mtd->erasesize); param->start_block = 0; - param->end_block = nBlocks - 1; + param->end_block = n_blocks - 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; + n_blocks = YCALCBLOCKS(mtd->size, + YAFFS_CHUNKS_PER_BLOCK * YAFFS_BYTES_PER_CHUNK); + + param->chunks_per_block = YAFFS_CHUNKS_PER_BLOCK; + param->total_bytes_per_chunk = YAFFS_BYTES_PER_CHUNK; } - /* ... and common functions */ - param->erase_fn = nandmtd_EraseBlockInNAND; - param->initialise_flash_fn = nandmtd_InitialiseNAND; - yaffs_dev_to_lc(dev)->putSuperFunc = yaffs_MTDPutSuper; + param->start_block = 0; + param->end_block = n_blocks - 1; - param->sb_dirty_fn = yaffs_touch_super; - param->gc_control = yaffs_gc_control_callback; + yaffs_mtd_drv_install(dev); - yaffs_dev_to_lc(dev)->superBlock= sb; - + param->sb_dirty_fn = yaffs_set_super_dirty; + param->gc_control_fn = yaffs_gc_control_callback; -#ifndef CONFIG_YAFFS_DOES_ECC - param->use_nand_ecc = 1; -#endif + yaffs_dev_to_lc(dev)->super = sb; -#ifdef CONFIG_YAFFS_DISABLE_WIDE_TNODES - param->wide_tnodes_disabled = 1; -#endif + param->use_nand_ecc = 1; param->skip_checkpt_rd = options.skip_checkpoint_read; param->skip_checkpt_wr = options.skip_checkpoint_write; - down(&yaffs_context_lock); + mutex_lock(&yaffs_context_lock); /* Get a mount id */ found = 0; - for(mount_id=0; ! found; mount_id++){ + 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) + list_for_each(l, &yaffs_context_list) { + context_iterator = + list_entry(l, struct yaffs_linux_context, + context_list); + 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); + list_add_tail(&(yaffs_dev_to_lc(dev)->context_list), + &yaffs_context_list); + mutex_unlock(&yaffs_context_lock); - /* Directory search handling...*/ - YINIT_LIST_HEAD(&(yaffs_dev_to_lc(dev)->searchContexts)); - param->remove_obj_fn = yaffs_remove_obj_callback; + /* Directory search handling... */ + INIT_LIST_HEAD(&(yaffs_dev_to_lc(dev)->search_contexts)); + param->remove_obj_fn = yaffs_remove_obj_callback; - init_MUTEX(&(yaffs_dev_to_lc(dev)->grossLock)); + mutex_init(&(yaffs_dev_to_lc(dev)->gross_lock)); 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_trace(YAFFS_TRACE_OS, + "yaffs_read_super: guts initialised %s", + (err == YAFFS_OK) ? "OK" : "FAILED"); + + if (err == YAFFS_OK) yaffs_bg_start(dev); - - if(!context->bgThread) + + if (!context->bg_thread) param->defered_dir_update = 0; + sb->s_maxbytes = yaffs_max_file_size(dev); /* 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)); + inode = yaffs_get_inode(sb, S_IFDIR | 0755, 0, yaffs_root(dev)); if (!inode) return NULL; @@ -3067,27 +2868,25 @@ static struct super_block *yaffs_internal_read_super(int yaffs_version, 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); + yaffs_trace(YAFFS_TRACE_OS, "yaffs_read_super: got root inode"); - T(YAFFS_TRACE_OS, (TSTR("yaffs_read_super: d_alloc_root done\n"))); + root = yaffs_make_root(inode); - if (!root) { - iput(inode); + if (!root) 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)); + if(!dev->is_checkpointed) + yaffs_set_super_dirty(dev); + + yaffs_trace(YAFFS_TRACE_ALWAYS, + "yaffs_read_super: is_checkpointed %d", + dev->is_checkpointed); - T(YAFFS_TRACE_OS, (TSTR("yaffs_read_super: done\n"))); + yaffs_trace(YAFFS_TRACE_OS, "yaffs_read_super: done"); 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) @@ -3095,7 +2894,13 @@ static int yaffs_internal_read_super_mtd(struct super_block *sb, void *data, return yaffs_internal_read_super(1, sb, data, silent) ? 0 : -EINVAL; } -#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) +#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 39)) +static struct dentry *yaffs_mount(struct file_system_type *fs_type, int flags, + const char *dev_name, void *data) +{ + return mount_bdev(fs_type, flags, dev_name, data, yaffs_internal_read_super_mtd); +} +#elif (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) @@ -3118,8 +2923,12 @@ static struct super_block *yaffs_read_super(struct file_system_type *fs, static struct file_system_type yaffs_fs_type = { .owner = THIS_MODULE, .name = "yaffs", - .get_sb = yaffs_read_super, - .kill_sb = kill_block_super, +#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 39)) + .mount = yaffs_mount, +#else + .get_sb = yaffs_read_super, +#endif + .kill_sb = kill_block_super, .fs_flags = FS_REQUIRES_DEV, }; #else @@ -3134,8 +2943,6 @@ static DECLARE_FSTYPE(yaffs_fs_type, "yaffs", yaffs_read_super, #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) @@ -3143,13 +2950,19 @@ static int yaffs2_internal_read_super_mtd(struct super_block *sb, void *data, return yaffs_internal_read_super(2, sb, data, silent) ? 0 : -EINVAL; } -#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) +#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 39)) +static struct dentry *yaffs2_mount(struct file_system_type *fs_type, int flags, + const char *dev_name, void *data) +{ + return mount_bdev(fs_type, flags, dev_name, data, yaffs2_internal_read_super_mtd); +} +#elif (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) + 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); + yaffs2_internal_read_super_mtd, mnt); } #else static struct super_block *yaffs2_read_super(struct file_system_type *fs, @@ -3165,8 +2978,12 @@ static struct super_block *yaffs2_read_super(struct file_system_type *fs, static struct file_system_type yaffs2_fs_type = { .owner = THIS_MODULE, .name = "yaffs2", - .get_sb = yaffs2_read_super, - .kill_sb = kill_block_super, +#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 39)) + .mount = yaffs2_mount, +#else + .get_sb = yaffs2_read_super, +#endif + .kill_sb = kill_block_super, .fs_flags = FS_REQUIRES_DEV, }; #else @@ -3180,40 +2997,58 @@ 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); +static char *yaffs_dump_dev_part0(char *buf, struct yaffs_dev *dev) +{ + struct yaffs_param *param = &dev->param; + int bs[10]; + + yaffs_count_blocks_by_state(dev,bs); + + buf += sprintf(buf, "start_block.......... %d\n", param->start_block); + buf += sprintf(buf, "end_block............ %d\n", param->end_block); + buf += sprintf(buf, "total_bytes_per_chunk %d\n", + param->total_bytes_per_chunk); + buf += sprintf(buf, "use_nand_ecc......... %d\n", param->use_nand_ecc); + buf += sprintf(buf, "no_tags_ecc.......... %d\n", param->no_tags_ecc); + buf += sprintf(buf, "is_yaffs2............ %d\n", param->is_yaffs2); + buf += sprintf(buf, "inband_tags.......... %d\n", param->inband_tags); + buf += sprintf(buf, "empty_lost_n_found... %d\n", + param->empty_lost_n_found); + buf += sprintf(buf, "disable_lazy_load.... %d\n", + param->disable_lazy_load); + buf += sprintf(buf, "disable_bad_block_mrk %d\n", + param->disable_bad_block_marking); + buf += sprintf(buf, "refresh_period....... %d\n", + param->refresh_period); + buf += sprintf(buf, "n_caches............. %d\n", param->n_caches); + buf += sprintf(buf, "n_reserved_blocks.... %d\n", + param->n_reserved_blocks); + buf += sprintf(buf, "always_check_erased.. %d\n", + param->always_check_erased); buf += sprintf(buf, "\n"); + buf += sprintf(buf, "block count by state\n"); + buf += sprintf(buf, "0:%d 1:%d 2:%d 3:%d 4:%d\n", + bs[0], bs[1], bs[2], bs[3], bs[4]); + buf += sprintf(buf, "5:%d 6:%d 7:%d 8:%d 9:%d\n", + bs[5], bs[6], bs[7], bs[8], bs[9]); return buf; } - -static char *yaffs_dump_dev_part1(char *buf, yaffs_dev_t * dev) +static char *yaffs_dump_dev_part1(char *buf, struct yaffs_dev *dev) { - buf += sprintf(buf, "data_bytes_per_chunk. %d\n", dev->data_bytes_per_chunk); + buf += sprintf(buf, "max file size....... %lld\n", + (long long) yaffs_max_file_size(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, "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); @@ -3224,21 +3059,30 @@ static char *yaffs_dump_dev_part1(char *buf, yaffs_dev_t * dev) 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, "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_retried_writes..... %u\n", + dev->n_retried_writes); + buf += sprintf(buf, "n_retired_blocks..... %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, "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, "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); + buf += sprintf(buf, "tags_used............ %u\n", dev->tags_used); + buf += sprintf(buf, "summary_used......... %u\n", dev->summary_used); return buf; } @@ -3247,7 +3091,7 @@ static int yaffs_proc_read(char *page, char **start, off_t offset, int count, int *eof, void *data) { - struct ylist_head *item; + struct list_head *item; char *buf = page; int step = offset; int n = 0; @@ -3262,67 +3106,45 @@ static int yaffs_proc_read(char *page, /* Print header first */ if (step == 0) - buf += sprintf(buf, "Multi-version YAFFS built:" __DATE__ " " __TIME__"\n"); + buf += + sprintf(buf, + "Multi-version YAFFS built:" __DATE__ " " __TIME__ + "\n"); else if (step == 1) - buf += sprintf(buf,"\n"); + buf += sprintf(buf, "\n"); else { - step-=2; - - down(&yaffs_context_lock); + step -= 2; + + mutex_lock(&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; + list_for_each(item, &yaffs_context_list) { + struct yaffs_linux_context *dc = + list_entry(item, struct yaffs_linux_context, + context_list); + struct yaffs_dev *dev = dc->dev; if (n < (step & ~1)) { - n+=2; + n += 2; continue; } - if((step & 1)==0){ - buf += sprintf(buf, "\nDevice %d \"%s\"\n", n, dev->param.name); + if ((step & 1) == 0) { + buf += + sprintf(buf, "\nDevice %d \"%s\"\n", n, + dev->param.name); buf = yaffs_dump_dev_part0(buf, dev); - } else + } else { buf = yaffs_dump_dev_part1(buf, dev); - + } + break; } - up(&yaffs_context_lock); + mutex_unlock(&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. * @@ -3351,15 +3173,14 @@ static struct { {"os", YAFFS_TRACE_OS}, {"scan_debug", YAFFS_TRACE_SCAN_DEBUG}, {"scan", YAFFS_TRACE_SCAN}, + {"mount", YAFFS_TRACE_MOUNT}, {"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}, @@ -3367,7 +3188,7 @@ static struct { #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 long count, void *data) { unsigned rg = 0, mask_bitfield; char *end; @@ -3409,15 +3230,17 @@ static int yaffs_proc_write_trace_options(struct file *file, const char *buf, done = 0; } else { for (x = buf + pos, i = 0; - (*x == '_' || (*x >= 'a' && *x <= 'z')) && - i < MAX_MASK_NAME_LENGTH; x++, i++, pos++) + (*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) { + if (strcmp(substring, mask_flags[i].mask_name) + == 0) { mask_name = mask_flags[i].mask_name; - mask_bitfield = mask_flags[i].mask_bitfield; + mask_bitfield = + mask_flags[i].mask_bitfield; done = 0; break; } @@ -3452,18 +3275,101 @@ static int yaffs_proc_write_trace_options(struct file *file, const char *buf, 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); + printk(KERN_DEBUG "%c%s\n", flag, + mask_flags[i].mask_name); } } return count; } +/* Debug strings are of the form: + * .bnnn print info on block n + * .cobjn,chunkn print nand chunk id for objn:chunkn + */ + +static int yaffs_proc_debug_write(struct file *file, const char *buf, + unsigned long count, void *data) +{ + + char str[100]; + char *p0; + char *p1; + long p1_val; + long p0_val; + char cmd; + struct list_head *item; + + memset(str, 0, sizeof(str)); + memcpy(str, buf, min(count, sizeof(str) -1)); + + cmd = str[1]; + + p0 = str + 2; + + p1 = p0; + + while (*p1 && *p1 != ',') { + p1++; + } + *p1 = '\0'; + p1++; + + p0_val = simple_strtol(p0, NULL, 0); + p1_val = simple_strtol(p1, NULL, 0); + + + mutex_lock(&yaffs_context_lock); + + /* Locate and print the Nth entry. Order N-squared but N is small. */ + list_for_each(item, &yaffs_context_list) { + struct yaffs_linux_context *dc = + list_entry(item, struct yaffs_linux_context, + context_list); + struct yaffs_dev *dev = dc->dev; + + if (cmd == 'b') { + struct yaffs_block_info *bi; + + bi = yaffs_get_block_info(dev,p0_val); + + if(bi) { + printk("Block %d: state %d, retire %d, use %d, seq %d\n", + (int)p0_val, bi->block_state, + bi->needs_retiring, bi->pages_in_use, + bi->seq_number); + } + } else if (cmd == 'c') { + struct yaffs_obj *obj; + int nand_chunk; + + obj = yaffs_find_by_number(dev, p0_val); + if (!obj) + printk("No obj %d\n", (int)p0_val); + else { + if(p1_val == 0) + nand_chunk = obj->hdr_chunk; + else + nand_chunk = + yaffs_find_chunk_in_file(obj, + p1_val, NULL); + printk("Nand chunk for %d:%d is %d\n", + (int)p0_val, (int)p1_val, nand_chunk); + } + } + } + + mutex_unlock(&yaffs_context_lock); + + return count; +} static int yaffs_proc_write(struct file *file, const char *buf, - unsigned long count, void *data) + unsigned long count, void *data) { - return yaffs_proc_write_trace_options(file, buf, count, data); + if (buf[0] == '.') + return yaffs_proc_debug_write(file, buf, count, data); + return yaffs_proc_write_trace_options(file, buf, count, data); } /* Stuff to handle installation of file systems */ @@ -3483,41 +3389,22 @@ 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 - + yaffs_trace(YAFFS_TRACE_ALWAYS, + "yaffs built " __DATE__ " " __TIME__ " Installing."); - - - init_MUTEX(&yaffs_context_lock); + mutex_init(&yaffs_context_lock); /* Install the proc_fs entries */ my_proc_entry = create_proc_entry("yaffs", - S_IRUGO | S_IFREG, - YPROC_ROOT); + 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 + } else { return -ENOMEM; + } /* Now add the file system entries */ @@ -3551,11 +3438,10 @@ static void __exit exit_yaffs_fs(void) struct file_system_to_install *fsinst; - T(YAFFS_TRACE_ALWAYS, - (TSTR("yaffs built " __DATE__ " " __TIME__ " removing. \n"))); + yaffs_trace(YAFFS_TRACE_ALWAYS, + "yaffs built " __DATE__ " " __TIME__ " removing."); remove_proc_entry("yaffs", YPROC_ROOT); - remove_proc_entry("yaffs_stats", YPROC_ROOT); fsinst = fs_to_install; @@ -3569,8 +3455,8 @@ static void __exit exit_yaffs_fs(void) } module_init(init_yaffs_fs) -module_exit(exit_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_DESCRIPTION("YAFFS2 - a NAND specific flash file system"); +MODULE_AUTHOR("Charles Manning, Aleph One Ltd., 2002-2011"); 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 index cc717461c6..d277e20e2a 100644 --- a/target/linux/generic/files/fs/yaffs2/yaffs_yaffs1.c +++ b/target/linux/generic/files/fs/yaffs2/yaffs_yaffs1.c @@ -1,7 +1,7 @@ /* * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. * - * Copyright (C) 2002-2010 Aleph One Ltd. + * Copyright (C) 2002-2011 Aleph One Ltd. * for Toby Churchill Ltd and Brightstar Engineering * * Created by Charles Manning <charles@aleph1.co.uk> @@ -10,54 +10,46 @@ * 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" +#include "yaffs_attribs.h" - -int yaffs1_scan(yaffs_dev_t *dev) +int yaffs1_scan(struct yaffs_dev *dev) { - yaffs_ext_tags tags; + struct 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; - + enum yaffs_block_state state; + LIST_HEAD(hard_list); + struct yaffs_block_info *bi; + u32 seq_number; + struct yaffs_obj_hdr *oh; + struct yaffs_obj *in; + struct yaffs_obj *parent; int alloc_failed = 0; + struct yaffs_shadow_fixer *shadow_fixers = NULL; + u8 *chunk_data; - struct yaffs_shadow_fixer_s *shadowFixerList = NULL; - - - __u8 *chunkData; - + yaffs_trace(YAFFS_TRACE_SCAN, + "yaffs1_scan starts intstartblk %d intendblk %d...", + dev->internal_start_block, dev->internal_end_block); - - 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__); + chunk_data = yaffs_get_temp_buffer(dev); 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++) { + 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; @@ -70,58 +62,51 @@ int yaffs1_scan(yaffs_dev_t *dev) 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)); + yaffs_trace(YAFFS_TRACE_SCAN_DEBUG, + "Block scanning block %d state %d seq %d", + blk, state, seq_number); if (state == YAFFS_BLOCK_STATE_DEAD) { - T(YAFFS_TRACE_BAD_BLOCKS, - (TSTR("block %d is bad" TENDSTR), blk)); + yaffs_trace(YAFFS_TRACE_BAD_BLOCKS, + "block %d is bad", blk); } else if (state == YAFFS_BLOCK_STATE_EMPTY) { - T(YAFFS_TRACE_SCAN_DEBUG, - (TSTR("Block empty " TENDSTR))); + yaffs_trace(YAFFS_TRACE_SCAN_DEBUG, "Block empty "); 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(); + for (blk = dev->internal_start_block; + !alloc_failed && blk <= dev->internal_end_block; blk++) { - YYIELD(); - - blk = blockIterator; + cond_resched(); 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++) { + /* 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_SCAN; 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); + &tags); /* Let's have a good look at this chunk... */ - if (tags.ecc_result == YAFFS_ECC_RESULT_UNFIXED || tags.is_deleted) { + 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 @@ -129,24 +114,24 @@ int yaffs1_scan(yaffs_dev_t *dev) */ if (c == 0) { - /* We're looking at the first chunk in the block so the block is unused */ + /* 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)); + /* this is the block being allocated */ + yaffs_trace(YAFFS_TRACE_SCAN, + " Allocating from %d %d", + 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); + 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; @@ -155,133 +140,131 @@ int yaffs1_scan(yaffs_dev_t *dev) 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). + 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)) + 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.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; + 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; + 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 + * Make the object */ yaffs_set_chunk_bit(dev, blk, c); bi->pages_in_use++; result = yaffs_rd_chunk_tags_nand(dev, chunk, - chunkData, - NULL); + chunk_data, + NULL); - oh = (yaffs_obj_header *) chunkData; + oh = (struct yaffs_obj_hdr *)chunk_data; - in = yaffs_find_by_number(dev, - tags.obj_id); + 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. + * 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 = NULL; } in = yaffs_find_or_create_by_number(dev, - tags. - obj_id, - oh->type); + 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)); + struct yaffs_shadow_fixer *fixer; + fixer = + kmalloc(sizeof + (struct yaffs_shadow_fixer), + GFP_NOFS); if (fixer) { - fixer->next = shadowFixerList; - shadowFixerList = fixer; + fixer->next = shadow_fixers; + shadow_fixers = 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)); + fixer->shadowed_id = + oh->shadows_obj; + yaffs_trace(YAFFS_TRACE_SCAN, + " Shadow fixer: %d shadows %d", + 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 */ + /* We have already filled this one. + * We have a duplicate and need to + * resolve it. */ + + unsigned existing_serial = in->serial; + unsigned new_serial = + tags.serial_number; + + if (((existing_serial + 1) & 3) == + new_serial) { + /* Use new one - destroy the + * exisiting one */ yaffs_chunk_del(dev, - in->hdr_chunk, - 1, __LINE__); + in->hdr_chunk, + 1, __LINE__); in->valid = 0; } else { - /* Use existing - destroy this one. */ + /* Use existing - destroy + * this one. */ yaffs_chunk_del(dev, chunk, 1, - __LINE__); + __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 */ + 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 + yaffs_load_attribs(in, oh); in->hdr_chunk = chunk; in->serial = tags.serial_number; @@ -292,21 +275,7 @@ int yaffs1_scan(yaffs_dev_t *dev) 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 + yaffs_load_attribs(in, oh); in->hdr_chunk = chunk; in->serial = tags.serial_number; @@ -327,57 +296,43 @@ int yaffs1_scan(yaffs_dev_t *dev) 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 + YAFFS_OBJECT_TYPE_DIRECTORY; + INIT_LIST_HEAD(&parent-> + variant.dir_variant. + children); + } else if (!parent || + parent->variant_type != + YAFFS_OBJECT_TYPE_DIRECTORY) { + /* Hoosterman, a 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))); + yaffs_trace(YAFFS_TRACE_ERROR, + "yaffs tragedy: attempting to use non-directory as a directory in scan. Put in lost+found." + ); 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; - + if (dev->param. + use_header_file_size) + in->variant. + file_variant.file_size + = yaffs_oh_to_size(oh); 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; + in->variant. + hardlink_variant.equiv_id = + oh->equiv_id; + list_add(&in->hard_links, + &hard_list); break; case YAFFS_OBJECT_TYPE_DIRECTORY: /* Do nothing */ @@ -386,24 +341,27 @@ int yaffs1_scan(yaffs_dev_t *dev) /* Do nothing */ break; case YAFFS_OBJECT_TYPE_SYMLINK: - in->variant.symlink_variant.alias = + in->variant.symlink_variant. + alias = yaffs_clone_str(oh->alias); - if (!in->variant.symlink_variant.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.*/ + if (state == YAFFS_BLOCK_STATE_NEEDS_SCAN) { + /* 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.*/ + /* If the block was partially allocated then + * treat it as fully allocated. */ state = YAFFS_BLOCK_STATE_FULL; dev->alloc_block = -1; } @@ -413,31 +371,32 @@ int yaffs1_scan(yaffs_dev_t *dev) /* 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) { + 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. + * We should now have scanned all the objects, now it's time to add + * these hardlinks. */ - yaffs_link_fixup(dev, hard_list); + yaffs_link_fixup(dev, &hard_list); - /* Fix up any shadowed objects */ + /* + * Fix up any shadowed objects. + * There should not be more than one of these. + */ { - 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. + struct yaffs_shadow_fixer *fixer; + struct yaffs_obj *obj; + + while (shadow_fixers) { + fixer = shadow_fixers; + shadow_fixers = 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) @@ -448,18 +407,16 @@ int yaffs1_scan(yaffs_dev_t *dev) if (obj) yaffs_update_oh(obj, NULL, 1, 0, 0, NULL); - YFREE(fixer); + kfree(fixer); } } - yaffs_release_temp_buffer(dev, chunkData, __LINE__); + yaffs_release_temp_buffer(dev, chunk_data); if (alloc_failed) return YAFFS_FAIL; - T(YAFFS_TRACE_SCAN, (TSTR("yaffs1_scan ends" TENDSTR))); - + yaffs_trace(YAFFS_TRACE_SCAN, "yaffs1_scan ends"); 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 index 1f60b0cdb7..97e2fdd08a 100644 --- a/target/linux/generic/files/fs/yaffs2/yaffs_yaffs1.h +++ b/target/linux/generic/files/fs/yaffs2/yaffs_yaffs1.h @@ -1,7 +1,7 @@ /* * YAFFS: Yet another Flash File System . A NAND-flash specific file system. * - * Copyright (C) 2002-2010 Aleph One Ltd. + * Copyright (C) 2002-2011 Aleph One Ltd. * for Toby Churchill Ltd and Brightstar Engineering * * Created by Charles Manning <charles@aleph1.co.uk> @@ -17,6 +17,6 @@ #define __YAFFS_YAFFS1_H__ #include "yaffs_guts.h" -int yaffs1_scan(yaffs_dev_t *dev); +int yaffs1_scan(struct yaffs_dev *dev); #endif diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_yaffs2.c b/target/linux/generic/files/fs/yaffs2/yaffs_yaffs2.c index 58c36003f6..f1dc972276 100644 --- a/target/linux/generic/files/fs/yaffs2/yaffs_yaffs2.c +++ b/target/linux/generic/files/fs/yaffs2/yaffs_yaffs2.c @@ -1,7 +1,7 @@ /* * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. * - * Copyright (C) 2002-2010 Aleph One Ltd. + * Copyright (C) 2002-2011 Aleph One Ltd. * for Toby Churchill Ltd and Brightstar Engineering * * Created by Charles Manning <charles@aleph1.co.uk> @@ -11,16 +11,16 @@ * 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" +#include "yaffs_attribs.h" +#include "yaffs_summary.h" /* * Checkpoints are really no benefit on very small partitions. @@ -29,26 +29,24 @@ * 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) +void yaffs_calc_oldest_dirty_seq(struct yaffs_dev *dev) { int i; unsigned seq; unsigned block_no = 0; - yaffs_block_info_t *b; + struct yaffs_block_info *b; - if(!dev->param.is_yaffs2) + if (!dev->param.is_yaffs2) return; /* Find the oldest dirty sequence number. */ @@ -56,44 +54,44 @@ void yaffs_calc_oldest_dirty_seq(yaffs_dev_t *dev) 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) { + (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){ + if (block_no) { dev->oldest_dirty_seq = seq; dev->oldest_dirty_block = block_no; } - } - -void yaffs2_find_oldest_dirty_seq(yaffs_dev_t *dev) +void yaffs2_find_oldest_dirty_seq(struct yaffs_dev *dev) { - if(!dev->param.is_yaffs2) + if (!dev->param.is_yaffs2) return; - if(!dev->oldest_dirty_seq) + 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 + * 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) +void yaffs2_clear_oldest_dirty_seq(struct yaffs_dev *dev, + struct yaffs_block_info *bi) { - if(!dev->param.is_yaffs2) + if (!dev->param.is_yaffs2) return; - if(!bi || bi->seq_number == dev->oldest_dirty_seq){ + if (!bi || bi->seq_number == dev->oldest_dirty_seq) { dev->oldest_dirty_seq = 0; dev->oldest_dirty_block = 0; } @@ -104,21 +102,21 @@ void yaffs2_clear_oldest_dirty_seq(yaffs_dev_t *dev, yaffs_block_info_t *bi) * 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) +void yaffs2_update_oldest_dirty_seq(struct yaffs_dev *dev, unsigned block_no, + struct yaffs_block_info *bi) { - if(!dev->param.is_yaffs2) + if (!dev->param.is_yaffs2) return; - if(dev->oldest_dirty_seq){ - if(dev->oldest_dirty_seq > bi->seq_number){ + 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) +int yaffs_block_ok_for_gc(struct yaffs_dev *dev, struct yaffs_block_info *bi) { if (!dev->param.is_yaffs2) @@ -129,8 +127,8 @@ int yaffs_block_ok_for_gc(yaffs_dev_t *dev, 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. + /* 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); } @@ -140,32 +138,30 @@ int yaffs_block_ok_for_gc(yaffs_dev_t *dev, * periodically finds the oldest full block by sequence number for refreshing. * Only for yaffs2. */ -__u32 yaffs2_find_refresh_block(yaffs_dev_t *dev) +u32 yaffs2_find_refresh_block(struct yaffs_dev *dev) { - __u32 b ; - - __u32 oldest = 0; - __u32 oldestSequence = 0; - - yaffs_block_info_t *bi; + u32 b; + u32 oldest = 0; + u32 oldest_seq = 0; + struct yaffs_block_info *bi; - if(!dev->param.is_yaffs2) + if (!dev->param.is_yaffs2) return oldest; /* * If refresh period < 10 then refreshing is disabled. */ - if(dev->param.refresh_period < 10) - return oldest; + 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; + /* + * 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; + if (dev->refresh_skip > 0) + return oldest; /* * Refresh skip is now zero. @@ -175,84 +171,86 @@ __u32 yaffs2_find_refresh_block(yaffs_dev_t *dev) 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++){ + for (b = dev->internal_start_block; b <= dev->internal_end_block; b++) { - if (bi->block_state == YAFFS_BLOCK_STATE_FULL){ + if (bi->block_state == YAFFS_BLOCK_STATE_FULL) { - if(oldest < 1 || - bi->seq_number < oldestSequence){ - oldest = b; - oldestSequence = bi->seq_number; - } + if (oldest < 1 || bi->seq_number < oldest_seq) { + oldest = b; + oldest_seq = 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)); + yaffs_trace(YAFFS_TRACE_GC, + "GC refresh count %d selected block %d with seq_number %d", + dev->refresh_count, oldest, oldest_seq); } return oldest; } -int yaffs2_checkpt_required(yaffs_dev_t *dev) +int yaffs2_checkpt_required(struct yaffs_dev *dev) { int nblocks; - - if(!dev->param.is_yaffs2) + + 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); + 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 yaffs_calc_checkpt_blocks_required(struct yaffs_dev *dev) { int retval; + int n_bytes = 0; + int n_blocks; + int dev_blocks; - if(!dev->param.is_yaffs2) + if (!dev->param.is_yaffs2) return 0; - if (!dev->checkpoint_blocks_required && - yaffs2_checkpt_required(dev)){ + 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; + dev_blocks = dev->param.end_block - dev->param.start_block + 1; + n_bytes += sizeof(struct yaffs_checkpt_validity); + n_bytes += sizeof(struct yaffs_checkpt_dev); + n_bytes += dev_blocks * sizeof(struct yaffs_block_info); + n_bytes += dev_blocks * dev->chunk_bit_stride; + n_bytes += + (sizeof(struct yaffs_checkpt_obj) + sizeof(u32)) * + dev->n_obj; + n_bytes += (dev->tnode_size + sizeof(u32)) * dev->n_tnodes; + n_bytes += sizeof(struct yaffs_checkpt_validity); + n_bytes += sizeof(u32); /* checksum */ + + /* Round up and add 2 blocks to allow for some bad blocks, + * so add 3 */ + + n_blocks = + (n_bytes / + (dev->data_bytes_per_chunk * + dev->param.chunks_per_block)) + 3; + + dev->checkpoint_blocks_required = n_blocks; } retval = dev->checkpoint_blocks_required - dev->blocks_in_checkpt; - if(retval < 0) + if (retval < 0) retval = 0; return retval; } /*--------------------- Checkpointing --------------------*/ - -static int yaffs2_wr_checkpt_validity_marker(yaffs_dev_t *dev, int head) +static int yaffs2_wr_checkpt_validity_marker(struct yaffs_dev *dev, int head) { - yaffs_checkpt_validty_t cp; + struct yaffs_checkpt_validity cp; memset(&cp, 0, sizeof(cp)); @@ -261,27 +259,26 @@ static int yaffs2_wr_checkpt_validity_marker(yaffs_dev_t *dev, int head) cp.version = YAFFS_CHECKPOINT_VERSION; cp.head = (head) ? 1 : 0; - return (yaffs2_checkpt_wr(dev, &cp, sizeof(cp)) == sizeof(cp)) ? - 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) +static int yaffs2_rd_checkpt_validity_marker(struct yaffs_dev *dev, int head) { - yaffs_checkpt_validty_t cp; + struct yaffs_checkpt_validity 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)); + (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) +static void yaffs2_dev_to_checkpt_dev(struct yaffs_checkpt_dev *cp, + struct yaffs_dev *dev) { cp->n_erased_blocks = dev->n_erased_blocks; cp->alloc_block = dev->alloc_block; @@ -295,8 +292,8 @@ static void yaffs2_dev_to_checkpt_dev(yaffs_checkpt_dev_t *cp, } -static void yaffs_checkpt_dev_to_dev(yaffs_dev_t *dev, - yaffs_checkpt_dev_t *cp) +static void yaffs_checkpt_dev_to_dev(struct yaffs_dev *dev, + struct yaffs_checkpt_dev *cp) { dev->n_erased_blocks = cp->n_erased_blocks; dev->alloc_block = cp->alloc_block; @@ -309,42 +306,40 @@ static void yaffs_checkpt_dev_to_dev(yaffs_dev_t *dev, dev->seq_number = cp->seq_number; } - -static int yaffs2_wr_checkpt_dev(yaffs_dev_t *dev) +static int yaffs2_wr_checkpt_dev(struct yaffs_dev *dev) { - yaffs_checkpt_dev_t cp; - __u32 n_bytes; - __u32 nBlocks = (dev->internal_end_block - dev->internal_start_block + 1); - + struct yaffs_checkpt_dev cp; + u32 n_bytes; + u32 n_blocks = dev->internal_end_block - dev->internal_start_block + 1; int ok; - /* Write device runtime values*/ + /* 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)); + if (!ok) + return 0; /* 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); - } + n_bytes = n_blocks * sizeof(struct yaffs_block_info); + ok = (yaffs2_checkpt_wr(dev, dev->block_info, n_bytes) == n_bytes); + if (!ok) + return 0; /* 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; + n_bytes = n_blocks * 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) +static int yaffs2_rd_checkpt_dev(struct yaffs_dev *dev) { - yaffs_checkpt_dev_t cp; - __u32 n_bytes; - __u32 nBlocks = (dev->internal_end_block - dev->internal_start_block + 1); - + struct yaffs_checkpt_dev cp; + u32 n_bytes; + u32 n_blocks = + (dev->internal_end_block - dev->internal_start_block + 1); int ok; ok = (yaffs2_checkpt_rd(dev, &cp, sizeof(cp)) == sizeof(cp)); @@ -354,26 +349,25 @@ static int yaffs2_rd_checkpt_dev(yaffs_dev_t *dev) if (cp.struct_type != sizeof(cp)) return 0; - yaffs_checkpt_dev_to_dev(dev, &cp); - n_bytes = nBlocks * sizeof(yaffs_block_info_t); + n_bytes = n_blocks * sizeof(struct yaffs_block_info); ok = (yaffs2_checkpt_rd(dev, dev->block_info, n_bytes) == n_bytes); if (!ok) return 0; - n_bytes = nBlocks * dev->chunk_bit_stride; + + n_bytes = n_blocks * 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) +static void yaffs2_obj_checkpt_obj(struct yaffs_checkpt_obj *cp, + struct yaffs_obj *obj) { - cp->obj_id = obj->obj_id; cp->parent_id = (obj->parent) ? obj->parent->obj_id : 0; cp->hdr_chunk = obj->hdr_chunk; @@ -393,36 +387,35 @@ static void yaffs2_obj_checkpt_obj(yaffs_checkpt_obj_t *cp, 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) +static int yaffs2_checkpt_obj_to_obj(struct yaffs_obj *obj, + struct yaffs_checkpt_obj *cp) { - - yaffs_obj_t *parent; + struct yaffs_obj *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)); + yaffs_trace(YAFFS_TRACE_ERROR, + "Checkpoint read object %d type %d chunk %d does not match existing object type %d", + 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); + 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)); + yaffs_trace(YAFFS_TRACE_ALWAYS, + "Checkpoint read object %d parent %d type %d chunk %d Parent type, %d, not directory", + cp->obj_id, cp->parent_id, + cp->variant_type, cp->hdr_chunk, + parent->variant_type); return 0; } yaffs_add_obj_to_dir(parent, obj); @@ -449,133 +442,139 @@ static int taffs2_checkpt_obj_to_obj(yaffs_obj_t *obj, yaffs_checkpt_obj_t *cp) return 1; } - - -static int yaffs2_checkpt_tnode_worker(yaffs_obj_t *in, yaffs_tnode_t *tn, - __u32 level, int chunk_offset) +static int yaffs2_checkpt_tnode_worker(struct yaffs_obj *in, + struct yaffs_tnode *tn, u32 level, + int chunk_offset) { int i; - yaffs_dev_t *dev = in->my_dev; + struct yaffs_dev *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); + u32 base_offset; + + if (!tn) + return 1; + + if (level > 0) { + for (i = 0; i < YAFFS_NTNODES_INTERNAL && ok; i++) { + if (!tn->internal[i]) + continue; + ok = yaffs2_checkpt_tnode_worker(in, + tn->internal[i], + level - 1, + (chunk_offset << + YAFFS_TNODES_INTERNAL_BITS) + i); } + return ok; } - return ok; + /* Level 0 tnode */ + base_offset = chunk_offset << YAFFS_TNODES_LEVEL0_BITS; + ok = (yaffs2_checkpt_wr(dev, &base_offset, sizeof(base_offset)) == + sizeof(base_offset)); + 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) +static int yaffs2_wr_checkpt_tnodes(struct yaffs_obj *obj) { - __u32 endMarker = ~0; + u32 end_marker = ~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)); - } + if (obj->variant_type != YAFFS_OBJECT_TYPE_FILE) + return ok; + + 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, &end_marker, + sizeof(end_marker)) == sizeof(end_marker)); return ok ? 1 : 0; } -static int yaffs2_rd_checkpt_tnodes(yaffs_obj_t *obj) +static int yaffs2_rd_checkpt_tnodes(struct yaffs_obj *obj) { - __u32 baseChunk; + u32 base_chunk; int ok = 1; - yaffs_dev_t *dev = obj->my_dev; - yaffs_file_s *fileStructPtr = &obj->variant.file_variant; - yaffs_tnode_t *tn; + struct yaffs_dev *dev = obj->my_dev; + struct yaffs_file_var *file_stuct_ptr = &obj->variant.file_variant; + struct yaffs_tnode *tn; int nread = 0; - ok = (yaffs2_checkpt_rd(dev, &baseChunk, sizeof(baseChunk)) == sizeof(baseChunk)); + ok = (yaffs2_checkpt_rd(dev, &base_chunk, sizeof(base_chunk)) == + sizeof(base_chunk)); - while (ok && (~baseChunk)) { + while (ok && (~base_chunk)) { 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 + 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; + file_stuct_ptr, + base_chunk, tn) ? 1 : 0; if (ok) - ok = (yaffs2_checkpt_rd(dev, &baseChunk, sizeof(baseChunk)) == sizeof(baseChunk)); - + ok = (yaffs2_checkpt_rd + (dev, &base_chunk, + sizeof(base_chunk)) == sizeof(base_chunk)); } - T(YAFFS_TRACE_CHECKPOINT, ( - TSTR("Checkpoint read tnodes %d records, last %d. ok %d" TENDSTR), - nread, baseChunk, ok)); + yaffs_trace(YAFFS_TRACE_CHECKPOINT, + "Checkpoint read tnodes %d records, last %d. ok %d", + nread, base_chunk, ok); return ok ? 1 : 0; } - -static int yaffs2_wr_checkpt_objs(yaffs_dev_t *dev) +static int yaffs2_wr_checkpt_objs(struct yaffs_dev *dev) { - yaffs_obj_t *obj; - yaffs_checkpt_obj_t cp; + struct yaffs_obj *obj; + struct yaffs_checkpt_obj cp; int i; int ok = 1; - struct ylist_head *lh; - + struct list_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); - } + for (i = 0; ok && i < YAFFS_NOBJECT_BUCKETS; i++) { + list_for_each(lh, &dev->obj_bucket[i].list) { + obj = list_entry(lh, struct yaffs_obj, hash_link); + if (!obj->defered_free) { + yaffs2_obj_checkpt_obj(&cp, obj); + cp.struct_type = sizeof(cp); + + yaffs_trace(YAFFS_TRACE_CHECKPOINT, + "Checkpoint write object %d parent %d type %d chunk %d obj addr %p", + 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)); + memset(&cp, 0xff, sizeof(struct yaffs_checkpt_obj)); cp.struct_type = sizeof(cp); if (ok) @@ -584,59 +583,67 @@ static int yaffs2_wr_checkpt_objs(yaffs_dev_t *dev) return ok ? 1 : 0; } -static int yaffs2_rd_checkpt_objs(yaffs_dev_t *dev) +static int yaffs2_rd_checkpt_objs(struct yaffs_dev *dev) { - yaffs_obj_t *obj; - yaffs_checkpt_obj_t cp; + struct yaffs_obj *obj; + struct yaffs_checkpt_obj cp; int ok = 1; int done = 0; - yaffs_obj_t *hard_list = NULL; + LIST_HEAD(hard_list); + 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)); + yaffs_trace(YAFFS_TRACE_CHECKPOINT, + "struct size %d instead of %d ok %d", + 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)); + yaffs_trace(YAFFS_TRACE_CHECKPOINT, + "Checkpoint read object %d parent %d type %d chunk %d ", + cp.obj_id, cp.parent_id, cp.variant_type, + cp.hdr_chunk); - if (ok && cp.obj_id == ~0) + 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); + } 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); + ok = yaffs2_checkpt_obj_to_obj(obj, &cp); if (!ok) break; - if (obj->variant_type == YAFFS_OBJECT_TYPE_FILE) { + 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 if (obj->variant_type == + YAFFS_OBJECT_TYPE_HARDLINK) { + list_add(&obj->hard_links, &hard_list); } - } else + } else { ok = 0; + } } } if (ok) - yaffs_link_fixup(dev, hard_list); + yaffs_link_fixup(dev, &hard_list); return ok ? 1 : 0; } -static int yaffs2_wr_checkpt_sum(yaffs_dev_t *dev) +static int yaffs2_wr_checkpt_sum(struct yaffs_dev *dev) { - __u32 checkpt_sum; + 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)); + ok = (yaffs2_checkpt_wr(dev, &checkpt_sum, sizeof(checkpt_sum)) == + sizeof(checkpt_sum)); if (!ok) return 0; @@ -644,15 +651,16 @@ static int yaffs2_wr_checkpt_sum(yaffs_dev_t *dev) return 1; } -static int yaffs2_rd_checkpt_sum(yaffs_dev_t *dev) +static int yaffs2_rd_checkpt_sum(struct yaffs_dev *dev) { - __u32 checkpt_sum0; - __u32 checkpt_sum1; + 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)); + ok = (yaffs2_checkpt_rd(dev, &checkpt_sum1, sizeof(checkpt_sum1)) == + sizeof(checkpt_sum1)); if (!ok) return 0; @@ -663,13 +671,13 @@ static int yaffs2_rd_checkpt_sum(yaffs_dev_t *dev) return 1; } - -static int yaffs2_wr_checkpt_data(yaffs_dev_t *dev) +static int yaffs2_wr_checkpt_data(struct yaffs_dev *dev) { int ok = 1; if (!yaffs2_checkpt_required(dev)) { - T(YAFFS_TRACE_CHECKPOINT, (TSTR("skipping checkpoint write" TENDSTR))); + yaffs_trace(YAFFS_TRACE_CHECKPOINT, + "skipping checkpoint write"); ok = 0; } @@ -677,19 +685,23 @@ static int yaffs2_wr_checkpt_data(yaffs_dev_t *dev) ok = yaffs2_checkpt_open(dev, 1); if (ok) { - T(YAFFS_TRACE_CHECKPOINT, (TSTR("write checkpoint validity" TENDSTR))); + yaffs_trace(YAFFS_TRACE_CHECKPOINT, + "write checkpoint validity"); ok = yaffs2_wr_checkpt_validity_marker(dev, 1); } if (ok) { - T(YAFFS_TRACE_CHECKPOINT, (TSTR("write checkpoint device" TENDSTR))); + yaffs_trace(YAFFS_TRACE_CHECKPOINT, + "write checkpoint device"); ok = yaffs2_wr_checkpt_dev(dev); } if (ok) { - T(YAFFS_TRACE_CHECKPOINT, (TSTR("write checkpoint objects" TENDSTR))); + yaffs_trace(YAFFS_TRACE_CHECKPOINT, + "write checkpoint objects"); ok = yaffs2_wr_checkpt_objs(dev); } if (ok) { - T(YAFFS_TRACE_CHECKPOINT, (TSTR("write checkpoint validity" TENDSTR))); + yaffs_trace(YAFFS_TRACE_CHECKPOINT, + "write checkpoint validity"); ok = yaffs2_wr_checkpt_validity_marker(dev, 0); } @@ -707,15 +719,16 @@ static int yaffs2_wr_checkpt_data(yaffs_dev_t *dev) return dev->is_checkpointed; } -static int yaffs2_rd_checkpt_data(yaffs_dev_t *dev) +static int yaffs2_rd_checkpt_data(struct yaffs_dev *dev) { int ok = 1; - - if(!dev->param.is_yaffs2) + + if (!dev->param.is_yaffs2) ok = 0; if (ok && dev->param.skip_checkpt_rd) { - T(YAFFS_TRACE_CHECKPOINT, (TSTR("skipping checkpoint read" TENDSTR))); + yaffs_trace(YAFFS_TRACE_CHECKPOINT, + "skipping checkpoint read"); ok = 0; } @@ -723,25 +736,30 @@ static int yaffs2_rd_checkpt_data(yaffs_dev_t *dev) 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); + yaffs_trace(YAFFS_TRACE_CHECKPOINT, + "read checkpoint validity"); + ok = yaffs2_rd_checkpt_validity_marker(dev, 1); } if (ok) { - T(YAFFS_TRACE_CHECKPOINT, (TSTR("read checkpoint device" TENDSTR))); + yaffs_trace(YAFFS_TRACE_CHECKPOINT, + "read checkpoint device"); ok = yaffs2_rd_checkpt_dev(dev); } if (ok) { - T(YAFFS_TRACE_CHECKPOINT, (TSTR("read checkpoint objects" TENDSTR))); + yaffs_trace(YAFFS_TRACE_CHECKPOINT, + "read checkpoint objects"); 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); + yaffs_trace(YAFFS_TRACE_CHECKPOINT, + "read checkpoint validity"); + ok = yaffs2_rd_checkpt_validity_marker(dev, 0); } if (ok) { ok = yaffs2_rd_checkpt_sum(dev); - T(YAFFS_TRACE_CHECKPOINT, (TSTR("read checkpoint checksum %d" TENDSTR), ok)); + yaffs_trace(YAFFS_TRACE_CHECKPOINT, + "read checkpoint checksum %d", ok); } if (!yaffs_checkpt_close(dev)) @@ -753,13 +771,11 @@ static int yaffs2_rd_checkpt_data(yaffs_dev_t *dev) dev->is_checkpointed = 0; return ok ? 1 : 0; - } -void yaffs2_checkpt_invalidate(yaffs_dev_t *dev) +void yaffs2_checkpt_invalidate(struct yaffs_dev *dev) { - if (dev->is_checkpointed || - dev->blocks_in_checkpt > 0) { + if (dev->is_checkpointed || dev->blocks_in_checkpt > 0) { dev->is_checkpointed = 0; yaffs2_checkpt_invalidate_stream(dev); } @@ -767,11 +783,11 @@ void yaffs2_checkpt_invalidate(yaffs_dev_t *dev) dev->param.sb_dirty_fn(dev); } - -int yaffs_checkpoint_save(yaffs_dev_t *dev) +int yaffs_checkpoint_save(struct yaffs_dev *dev) { - - T(YAFFS_TRACE_CHECKPOINT, (TSTR("save entry: is_checkpointed %d"TENDSTR), dev->is_checkpointed)); + yaffs_trace(YAFFS_TRACE_CHECKPOINT, + "save entry: is_checkpointed %d", + dev->is_checkpointed); yaffs_verify_objects(dev); yaffs_verify_blocks(dev); @@ -782,15 +798,20 @@ int yaffs_checkpoint_save(yaffs_dev_t *dev) yaffs2_wr_checkpt_data(dev); } - T(YAFFS_TRACE_ALWAYS, (TSTR("save exit: is_checkpointed %d"TENDSTR), dev->is_checkpointed)); + yaffs_trace(YAFFS_TRACE_CHECKPOINT | YAFFS_TRACE_MOUNT, + "save exit: is_checkpointed %d", + dev->is_checkpointed); return dev->is_checkpointed; } -int yaffs2_checkpt_restore(yaffs_dev_t *dev) +int yaffs2_checkpt_restore(struct yaffs_dev *dev) { int retval; - T(YAFFS_TRACE_CHECKPOINT, (TSTR("restore entry: is_checkpointed %d"TENDSTR), dev->is_checkpointed)); + + yaffs_trace(YAFFS_TRACE_CHECKPOINT, + "restore entry: is_checkpointed %d", + dev->is_checkpointed); retval = yaffs2_rd_checkpt_data(dev); @@ -800,177 +821,576 @@ int yaffs2_checkpt_restore(yaffs_dev_t *dev) yaffs_verify_free_chunks(dev); } - T(YAFFS_TRACE_CHECKPOINT, (TSTR("restore exit: is_checkpointed %d"TENDSTR), dev->is_checkpointed)); + yaffs_trace(YAFFS_TRACE_CHECKPOINT, + "restore exit: is_checkpointed %d", + dev->is_checkpointed); return retval; } -int yaffs2_handle_hole(yaffs_obj_t *obj, loff_t new_size) +int yaffs2_handle_hole(struct yaffs_obj *obj, loff_t new_size) { - /* if newsSize > oldFileSize. + /* if new_size > old_file_size. * We're going to be writing a hole. - * If the hole is small then write zeros otherwise write a start of hole marker. + * If the hole is small then write zeros otherwise write a start + * of hole marker. */ - - - loff_t oldFileSize; - int increase; - int smallHole ; + loff_t old_file_size; + loff_t increase; + int small_hole; int result = YAFFS_OK; - yaffs_dev_t *dev = NULL; + struct yaffs_dev *dev = NULL; + u8 *local_buffer = NULL; + int small_increase_ok = 0; - __u8 *localBuffer = NULL; - - int smallIncreaseOk = 0; - - if(!obj) + if (!obj) return YAFFS_FAIL; - if(obj->variant_type != YAFFS_OBJECT_TYPE_FILE) + 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) + if (!dev->param.is_yaffs2) return YAFFS_OK; - oldFileSize = obj->variant.file_variant.file_size; + old_file_size = obj->variant.file_variant.file_size; - if (new_size <= oldFileSize) + if (new_size <= old_file_size) return YAFFS_OK; - increase = new_size - oldFileSize; + increase = new_size - old_file_size; - if(increase < YAFFS_SMALL_HOLE_THRESHOLD * dev->data_bytes_per_chunk && - yaffs_check_alloc_available(dev, YAFFS_SMALL_HOLE_THRESHOLD + 1)) - smallHole = 1; + if (increase < YAFFS_SMALL_HOLE_THRESHOLD * dev->data_bytes_per_chunk && + yaffs_check_alloc_available(dev, YAFFS_SMALL_HOLE_THRESHOLD + 1)) + small_hole = 1; else - smallHole = 0; + small_hole = 0; - if(smallHole) - localBuffer= yaffs_get_temp_buffer(dev, __LINE__); - - if(localBuffer){ + if (small_hole) + local_buffer = yaffs_get_temp_buffer(dev); + + if (local_buffer) { /* fill hole with zero bytes */ - int pos = oldFileSize; - int thisWrite; + loff_t pos = old_file_size; + int this_write; 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; + memset(local_buffer, 0, dev->data_bytes_per_chunk); + small_increase_ok = 1; + + while (increase > 0 && small_increase_ok) { + this_write = increase; + if (this_write > dev->data_bytes_per_chunk) + this_write = dev->data_bytes_per_chunk; + written = + yaffs_do_file_wr(obj, local_buffer, pos, this_write, + 0); + if (written == this_write) { + pos += this_write; + increase -= this_write; + } else { + small_increase_ok = 0; + } } - yaffs_release_temp_buffer(dev,localBuffer,__LINE__); + yaffs_release_temp_buffer(dev, local_buffer); - /* If we were out of space then reverse any chunks we've added */ - if(!smallIncreaseOk) - yaffs_resize_file_down(obj, oldFileSize); + /* If out of space then reverse any chunks we've added */ + if (!small_increase_ok) + yaffs_resize_file_down(obj, old_file_size); } - - if (!smallIncreaseOk && - obj->parent && - obj->parent->obj_id != YAFFS_OBJECTID_UNLINKED && - obj->parent->obj_id != YAFFS_OBJECTID_DELETED){ + + if (!small_increase_ok && + 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 { +struct yaffs_block_index { 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; + int aseq = ((struct yaffs_block_index *)a)->seq; + int bseq = ((struct yaffs_block_index *)b)->seq; + int ablock = ((struct yaffs_block_index *)a)->block; + int bblock = ((struct yaffs_block_index *)b)->block; + if (aseq == bseq) return ablock - bblock; - else - return aseq - bseq; + + return aseq - bseq; } -int yaffs2_scan_backwards(yaffs_dev_t *dev) +static inline int yaffs2_scan_chunk(struct yaffs_dev *dev, + struct yaffs_block_info *bi, + int blk, int chunk_in_block, + int *found_chunks, + u8 *chunk_data, + struct list_head *hard_list, + int summary_available) { - 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; + struct yaffs_obj_hdr *oh; + struct yaffs_obj *in; + struct yaffs_obj *parent; int equiv_id; + loff_t file_size; + int is_shrink; + int is_unlinked; + struct yaffs_ext_tags tags; + int result; int alloc_failed = 0; + int chunk = blk * dev->param.chunks_per_block + chunk_in_block; + struct yaffs_file_var *file_var; + struct yaffs_hardlink_var *hl_var; + struct yaffs_symlink_var *sl_var; + + if (summary_available) { + result = yaffs_summary_fetch(dev, &tags, chunk_in_block); + tags.seq_number = bi->seq_number; + } + + if (!summary_available || tags.obj_id == 0) { + result = yaffs_rd_chunk_tags_nand(dev, chunk, NULL, &tags); + dev->tags_used++; + } else { + dev->summary_used++; + } + + /* 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 (*found_chunks) { + /* This is a chunk that was skipped due + * to failing the erased check */ + } else if (chunk_in_block == 0) { + /* We're looking at the first chunk in + * the block so the block is unused */ + bi->block_state = YAFFS_BLOCK_STATE_EMPTY; + dev->n_erased_blocks++; + } else { + if (bi->block_state == YAFFS_BLOCK_STATE_NEEDS_SCAN || + bi->block_state == YAFFS_BLOCK_STATE_ALLOCATING) { + if (dev->seq_number == bi->seq_number) { + /* Allocating from this block*/ + yaffs_trace(YAFFS_TRACE_SCAN, + " Allocating from %d %d", + blk, chunk_in_block); + + bi->block_state = + YAFFS_BLOCK_STATE_ALLOCATING; + dev->alloc_block = blk; + dev->alloc_page = chunk_in_block; + dev->alloc_block_finder = blk; + } else { + /* This is a partially written block + * that is not the current + * allocation block. + */ + yaffs_trace(YAFFS_TRACE_SCAN, + "Partially written block %d detected. gc will fix this.", + blk); + } + } + } + + dev->n_free_chunks++; + + } else if (tags.ecc_result == + YAFFS_ECC_RESULT_UNFIXED) { + yaffs_trace(YAFFS_TRACE_SCAN, + " Unfixed ECC in chunk(%d:%d), chunk ignored", + blk, chunk_in_block); + dev->n_free_chunks++; + } else if (tags.obj_id > YAFFS_MAX_OBJECT_ID || + tags.chunk_id > YAFFS_MAX_CHUNK_ID || + tags.obj_id == YAFFS_OBJECTID_SUMMARY || + (tags.chunk_id > 0 && + tags.n_bytes > dev->data_bytes_per_chunk) || + tags.seq_number != bi->seq_number) { + yaffs_trace(YAFFS_TRACE_SCAN, + "Chunk (%d:%d) with bad tags:obj = %d, chunk_id = %d, n_bytes = %d, ignored", + blk, chunk_in_block, 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... */ + loff_t endpos; + loff_t chunk_base = (tags.chunk_id - 1) * + dev->data_bytes_per_chunk; + + *found_chunks = 1; + + yaffs_set_chunk_bit(dev, blk, chunk_in_block); + 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 && + chunk_base < 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 = chunk_base + tags.n_bytes; + + if (!in->valid && + 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 + */ + *found_chunks = 1; + + yaffs_set_chunk_bit(dev, blk, chunk_in_block); + 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, + chunk_data, + NULL); + + oh = (struct yaffs_obj_hdr *)chunk_data; + + 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! */ + yaffs_trace(YAFFS_TRACE_ERROR, + "yaffs tragedy: Could not make object for object %d at chunk %d during scan", + tags.obj_id, chunk); + return YAFFS_FAIL; + } + 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) + )) { + loff_t this_size = (oh) ? + yaffs_oh_to_size(oh) : + tags.extra_file_size; + 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) { + this_size = 0; + is_shrink = 1; + } + + if (is_shrink && + in->variant.file_variant.shrink_size > + this_size) + in->variant.file_variant.shrink_size = + this_size; + + 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)) + yaffs_trace(YAFFS_TRACE_ERROR, + "yaffs tragedy: Bad object type, %d != %d, for object %d at chunk %d during scan", + 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; + yaffs_load_attribs(in, oh); + in->lazy_loaded = 0; + } 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; + yaffs_load_attribs(in, oh); + + 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 = yaffs_oh_to_size(oh); + 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_file_size; + is_shrink = tags.extra_is_shrink; + equiv_id = tags.extra_equiv_id; + in->lazy_loaded = 1; + } + in->dirty = 0; - yaffs_BlockIndex *blockIndex = NULL; - int altBlockIndex = 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; + INIT_LIST_HEAD(&parent-> + variant.dir_variant.children); + } else if (!parent || + parent->variant_type != + YAFFS_OBJECT_TYPE_DIRECTORY) { + /* Hoosterman, another problem.... + * Trying to use a non-directory as a directory + */ + + yaffs_trace(YAFFS_TRACE_ERROR, + "yaffs tragedy: attempting to use non-directory as a directory in scan. Put in lost+found." + ); + parent = dev->lost_n_found; + } + yaffs_add_obj_to_dir(parent, in); + + is_unlinked = (parent == dev->del_dir) || + (parent == dev->unlinked_dir); + + if (is_shrink) + /* Mark the block */ + 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: + file_var = &in->variant.file_variant; + if (file_var->scanned_size < file_size) { + /* This covers the case where the file + * size is greater than the data held. + * This will happen if the file is + * resized to be larger than its + * current data extents. + */ + file_var->file_size = file_size; + file_var->scanned_size = file_size; + } + + if (file_var->shrink_size > file_size) + file_var->shrink_size = file_size; + + break; + case YAFFS_OBJECT_TYPE_HARDLINK: + hl_var = &in->variant.hardlink_variant; + if (!is_unlinked) { + hl_var->equiv_id = equiv_id; + list_add(&in->hard_links, hard_list); + } + break; + case YAFFS_OBJECT_TYPE_DIRECTORY: + /* Do nothing */ + break; + case YAFFS_OBJECT_TYPE_SPECIAL: + /* Do nothing */ + break; + case YAFFS_OBJECT_TYPE_SYMLINK: + sl_var = &in->variant.symlink_variant; + if (oh) { + sl_var->alias = + yaffs_clone_str(oh->alias); + if (!sl_var->alias) + alloc_failed = 1; + } + break; + } + } + } + return alloc_failed ? YAFFS_FAIL : YAFFS_OK; +} - T(YAFFS_TRACE_SCAN, - (TSTR - ("yaffs2_scan_backwards starts intstartblk %d intendblk %d..." - TENDSTR), dev->internal_start_block, dev->internal_end_block)); +int yaffs2_scan_backwards(struct yaffs_dev *dev) +{ + int blk; + int block_iter; + int start_iter; + int end_iter; + int n_to_scan = 0; + enum yaffs_block_state state; + int c; + int deleted; + LIST_HEAD(hard_list); + struct yaffs_block_info *bi; + u32 seq_number; + int n_blocks = dev->internal_end_block - dev->internal_start_block + 1; + u8 *chunk_data; + int found_chunks; + int alloc_failed = 0; + struct yaffs_block_index *block_index = NULL; + int alt_block_index = 0; + int summary_available; + yaffs_trace(YAFFS_TRACE_SCAN, + "yaffs2_scan_backwards starts intstartblk %d intendblk %d...", + dev->internal_start_block, dev->internal_end_block); dev->seq_number = YAFFS_LOWEST_SEQUENCE_NUMBER; - blockIndex = YMALLOC(nBlocks * sizeof(yaffs_BlockIndex)); + block_index = + kmalloc(n_blocks * sizeof(struct yaffs_block_index), GFP_NOFS); - if (!blockIndex) { - blockIndex = YMALLOC_ALT(nBlocks * sizeof(yaffs_BlockIndex)); - altBlockIndex = 1; + if (!block_index) { + block_index = + vmalloc(n_blocks * sizeof(struct yaffs_block_index)); + alt_block_index = 1; } - if (!blockIndex) { - T(YAFFS_TRACE_SCAN, - (TSTR("yaffs2_scan_backwards() could not allocate block index!" TENDSTR))); + if (!block_index) { + yaffs_trace(YAFFS_TRACE_SCAN, + "yaffs2_scan_backwards() could not allocate block index!" + ); return YAFFS_FAIL; } dev->blocks_in_checkpt = 0; - chunkData = yaffs_get_temp_buffer(dev, __LINE__); + chunk_data = yaffs_get_temp_buffer(dev); /* Scan all the blocks to determine their state */ bi = dev->block_info; - for (blk = dev->internal_start_block; blk <= dev->internal_end_block; blk++) { + 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; @@ -981,529 +1401,103 @@ int yaffs2_scan_backwards(yaffs_dev_t *dev) bi->seq_number = seq_number; if (bi->seq_number == YAFFS_SEQUENCE_CHECKPOINT_DATA) - bi->block_state = state = YAFFS_BLOCK_STATE_CHECKPOINT; + bi->block_state = YAFFS_BLOCK_STATE_CHECKPOINT; if (bi->seq_number == YAFFS_SEQUENCE_BAD_BLOCK) - bi->block_state = state = YAFFS_BLOCK_STATE_DEAD; + bi->block_state = YAFFS_BLOCK_STATE_DEAD; - T(YAFFS_TRACE_SCAN_DEBUG, - (TSTR("Block scanning block %d state %d seq %d" TENDSTR), blk, - state, seq_number)); + yaffs_trace(YAFFS_TRACE_SCAN_DEBUG, + "Block scanning block %d state %d seq %d", + blk, bi->block_state, seq_number); - - if (state == YAFFS_BLOCK_STATE_CHECKPOINT) { + if (bi->block_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))); + } else if (bi->block_state == YAFFS_BLOCK_STATE_DEAD) { + yaffs_trace(YAFFS_TRACE_BAD_BLOCKS, + "block %d is bad", blk); + } else if (bi->block_state == YAFFS_BLOCK_STATE_EMPTY) { + yaffs_trace(YAFFS_TRACE_SCAN_DEBUG, "Block empty "); dev->n_erased_blocks++; dev->n_free_chunks += dev->param.chunks_per_block; - } else if (state == YAFFS_BLOCK_STATE_NEEDS_SCANNING) { - + } else if (bi->block_state == + YAFFS_BLOCK_STATE_NEEDS_SCAN) { /* 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++; - + block_index[n_to_scan].seq = seq_number; + block_index[n_to_scan].block = blk; + n_to_scan++; 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)); - + yaffs_trace(YAFFS_TRACE_SCAN, + "Block scanning block %d has bad sequence number %d", + blk, seq_number); } } bi++; } - T(YAFFS_TRACE_SCAN, - (TSTR("%d blocks to be sorted..." TENDSTR), nBlocksToScan)); - - + yaffs_trace(YAFFS_TRACE_SCAN, "%d blocks to be sorted...", n_to_scan); - YYIELD(); + cond_resched(); - /* Sort the blocks by sequence number*/ - yaffs_qsort(blockIndex, nBlocksToScan, sizeof(yaffs_BlockIndex), yaffs2_ybicmp); + /* Sort the blocks by sequence number */ + sort(block_index, n_to_scan, sizeof(struct yaffs_block_index), + yaffs2_ybicmp, NULL); - YYIELD(); + cond_resched(); - T(YAFFS_TRACE_SCAN, (TSTR("...done" TENDSTR))); + yaffs_trace(YAFFS_TRACE_SCAN, "...done"); /* 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)); + start_iter = 0; + end_iter = n_to_scan - 1; + yaffs_trace(YAFFS_TRACE_SCAN_DEBUG, "%d blocks to scan", n_to_scan); /* For each block.... backwards */ - for (blockIterator = endIterator; !alloc_failed && blockIterator >= startIterator; - blockIterator--) { + for (block_iter = end_iter; + !alloc_failed && block_iter >= start_iter; + block_iter--) { /* Cooperative multitasking! This loop can run for so long that watchdog timers expire. */ - YYIELD(); + cond_resched(); /* get the block to scan in the correct order */ - blk = blockIndex[blockIterator].block; - + blk = block_index[block_iter].block; bi = yaffs_get_block_info(dev, blk); - - - state = bi->block_state; - deleted = 0; + summary_available = yaffs_summary_read(dev, dev->sum_tags, blk); + /* For each chunk in each block that needs scanning.... */ - foundChunksInBlock = 0; - for (c = dev->param.chunks_per_block - 1; + found_chunks = 0; + if (summary_available) + c = dev->chunks_per_summary - 1; + else + c = dev->param.chunks_per_block - 1; + + for (/* c is already initialised */; !alloc_failed && c >= 0 && - (state == YAFFS_BLOCK_STATE_NEEDS_SCANNING || - state == YAFFS_BLOCK_STATE_ALLOCATING); c--) { + (bi->block_state == YAFFS_BLOCK_STATE_NEEDS_SCAN || + bi->block_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; + if (yaffs2_scan_chunk(dev, bi, blk, c, + &found_chunks, chunk_data, + &hard_list, summary_available) == + YAFFS_FAIL) + alloc_failed = 1; } - - bi->block_state = state; + if (bi->block_state == YAFFS_BLOCK_STATE_NEEDS_SCAN) { + /* If we got this far while scanning, then the block + * is fully allocated. */ + bi->block_state = YAFFS_BLOCK_STATE_FULL; + } /* Now let's see if it was dirty */ if (bi->pages_in_use == 0 && @@ -1511,30 +1505,28 @@ int yaffs2_scan_backwards(yaffs_dev_t *dev) bi->block_state == YAFFS_BLOCK_STATE_FULL) { yaffs_block_became_dirty(dev, blk); } - } - + yaffs_skip_rest_of_block(dev); - if (altBlockIndex) - YFREE_ALT(blockIndex); + if (alt_block_index) + vfree(block_index); else - YFREE(blockIndex); + kfree(block_index); /* 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 + * We have scanned all the objects, now it's time to add these * hardlinks. */ - yaffs_link_fixup(dev, hard_list); - + yaffs_link_fixup(dev, &hard_list); - yaffs_release_temp_buffer(dev, chunkData, __LINE__); + yaffs_release_temp_buffer(dev, chunk_data); if (alloc_failed) return YAFFS_FAIL; - T(YAFFS_TRACE_SCAN, (TSTR("yaffs2_scan_backwards ends" TENDSTR))); + yaffs_trace(YAFFS_TRACE_SCAN, "yaffs2_scan_backwards ends"); 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 index e012aec5fb..2363bfd8bc 100644 --- a/target/linux/generic/files/fs/yaffs2/yaffs_yaffs2.h +++ b/target/linux/generic/files/fs/yaffs2/yaffs_yaffs2.h @@ -1,14 +1,16 @@ /* - * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. + * YAFFS: Yet another Flash File System . A NAND-flash specific file system. * - * Copyright (C) 2002-2010 Aleph One Ltd. + * Copyright (C) 2002-2011 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 + * 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_YAFFS2_H__ @@ -16,21 +18,22 @@ #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 yaffs_calc_oldest_dirty_seq(struct yaffs_dev *dev); +void yaffs2_find_oldest_dirty_seq(struct yaffs_dev *dev); +void yaffs2_clear_oldest_dirty_seq(struct yaffs_dev *dev, + struct yaffs_block_info *bi); +void yaffs2_update_oldest_dirty_seq(struct yaffs_dev *dev, unsigned block_no, + struct yaffs_block_info *bi); +int yaffs_block_ok_for_gc(struct yaffs_dev *dev, struct yaffs_block_info *bi); +u32 yaffs2_find_refresh_block(struct yaffs_dev *dev); +int yaffs2_checkpt_required(struct yaffs_dev *dev); +int yaffs_calc_checkpt_blocks_required(struct yaffs_dev *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); +void yaffs2_checkpt_invalidate(struct yaffs_dev *dev); +int yaffs2_checkpt_save(struct yaffs_dev *dev); +int yaffs2_checkpt_restore(struct yaffs_dev *dev); -int yaffs2_handle_hole(yaffs_obj_t *obj, loff_t new_size); -int yaffs2_scan_backwards(yaffs_dev_t *dev); +int yaffs2_handle_hole(struct yaffs_obj *obj, loff_t new_size); +int yaffs2_scan_backwards(struct yaffs_dev *dev); #endif diff --git a/target/linux/generic/files/fs/yaffs2/yportenv.h b/target/linux/generic/files/fs/yaffs2/yportenv.h index 2f9063bf7a..8975af331e 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) 2002-2010 Aleph One Ltd. + * Copyright (C) 2002-2011 Aleph One Ltd. * for Toby Churchill Ltd and Brightstar Engineering * * Created by Charles Manning <charles@aleph1.co.uk> @@ -13,7 +13,6 @@ * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL. */ - #ifndef __YPORTENV_H__ #define __YPORTENV_H__ @@ -25,15 +24,9 @@ #define MTD_VERSION(a, b, c) (((a) << 16) + ((b) << 8) + (c)) -#if defined CONFIG_YAFFS_WINCE - -#include "ywinceenv.h" - -#elif defined __KERNEL__ - +#ifdef YAFFS_OUT_OF_TREE #include "moduleconfig.h" - -/* Linux kernel */ +#endif #include <linux/version.h> #define MTD_VERSION_CODE LINUX_VERSION_CODE @@ -41,7 +34,7 @@ #if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 19)) #include <linux/config.h> #endif - +#include <linux/version.h> #include <linux/kernel.h> #include <linux/mm.h> #include <linux/sched.h> @@ -49,32 +42,21 @@ #include <linux/slab.h> #include <linux/vmalloc.h> #include <linux/xattr.h> - +#include <linux/list.h> +#include <linux/types.h> +#include <linux/fs.h> +#include <linux/stat.h> +#include <linux/sort.h> +#include <linux/bitops.h> + +/* These type wrappings are used to support Unicode names in WinCE. */ #define YCHAR char #define YUCHAR unsigned char #define _Y(x) x -#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_strncmp(a, b, c) strncmp(a, b, c) -#define yaffs_strnlen(s,m) strnlen(s,m) -#define yaffs_sprintf sprintf -#define yaffs_toupper(a) toupper(a) - -#define Y_INLINE __inline__ #define YAFFS_LOSTNFOUND_NAME "lost+found" #define YAFFS_LOSTNFOUND_PREFIX "obj" -/* #define YPRINTF(x) printk x */ -#define YMALLOC(x) kmalloc(x, GFP_NOFS) -#define YFREE(x) kfree(x) -#define YMALLOC_ALT(x) vmalloc(x) -#define YFREE_ALT(x) vfree(x) -#define YMALLOC_DMA(x) YMALLOC(x) - -#define YYIELD() schedule() -#define Y_DUMP_STACK() dump_stack() #define YAFFS_ROOT_MODE 0755 #define YAFFS_LOSTNFOUND_MODE 0700 @@ -87,247 +69,17 @@ #define Y_TIME_CONVERT(x) (x) #endif -#define yaffs_sum_cmp(x, y) ((x) == (y)) -#define yaffs_strcmp(a, b) strcmp(a, b) - -#define TENDSTR "\n" -#define TSTR(x) KERN_DEBUG x -#define TCONT(x) x -#define TOUT(p) printk p - #define compile_time_assertion(assertion) \ ({ int x = __builtin_choose_expr(assertion, 0, (void)0); (void) x; }) -#elif defined CONFIG_YAFFS_DIRECT - -#define MTD_VERSION_CODE MTD_VERSION(2, 6, 22) - -/* Direct interface */ -#include "ydirectenv.h" - -#elif defined CONFIG_YAFFS_UTIL -/* Stuff for YAFFS utilities */ - -#include "stdlib.h" -#include "stdio.h" -#include "string.h" - - -#define YMALLOC(x) malloc(x) -#define YFREE(x) free(x) -#define YMALLOC_ALT(x) malloc(x) -#define YFREE_ALT(x) free(x) - -#define YCHAR char -#define YUCHAR unsigned char -#define _Y(x) x -#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_strnlen(s,m) strnlen(s,m) -#define yaffs_sprintf sprintf -#define yaffs_toupper(a) toupper(a) - -#define Y_INLINE inline - -/* #define YINFO(s) YPRINTF(( __FILE__ " %d %s\n",__LINE__,s)) */ -/* #define YALERT(s) YINFO(s) */ - -#define TENDSTR "\n" -#define TSTR(x) x -#define TOUT(p) printf p - -#define YAFFS_LOSTNFOUND_NAME "lost+found" -#define YAFFS_LOSTNFOUND_PREFIX "obj" -/* #define YPRINTF(x) printf x */ - -#define YAFFS_ROOT_MODE 0755 -#define YAFFS_LOSTNFOUND_MODE 0700 - -#define yaffs_sum_cmp(x, y) ((x) == (y)) -#define yaffs_strcmp(a, b) strcmp(a, b) - -#else -/* Should have specified a configuration type */ -#error Unknown configuration - -#endif - -#if defined(CONFIG_YAFFS_DIRECT) || defined(CONFIG_YAFFS_WINCE) - -#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 +#define yaffs_printf(msk, fmt, ...) \ + printk(KERN_DEBUG "yaffs: " fmt "\n", ##__VA_ARGS__) -#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__));\ - Y_DUMP_STACK();\ +#define yaffs_trace(msk, fmt, ...) do { \ + if (yaffs_trace_mask & (msk)) \ + printk(KERN_DEBUG "yaffs: " fmt "\n", ##__VA_ARGS__); \ } while (0) -#endif #endif |