diff options
Diffstat (limited to 'target/linux/generic/files/fs/yaffs2/yaffs_guts.h')
| -rw-r--r-- | target/linux/generic/files/fs/yaffs2/yaffs_guts.h | 1042 |
1 files changed, 538 insertions, 504 deletions
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 |