X-Git-Url: http://www.aleph1.co.uk/gitweb/?p=yaffs2.git;a=blobdiff_plain;f=yaffs_guts.h;h=307eba28676f5c2360668c64c2477c8804624edc;hp=13a2e877798b6319657d9939bf89306d7d93ee31;hb=0d62a49dfe174bd70d289f0cf8e97c78585dd359;hpb=4aab7ea4c9b8fb1bb9b375476a9faf70d29871b1 diff --git a/yaffs_guts.h b/yaffs_guts.h index 13a2e87..307eba2 100644 --- a/yaffs_guts.h +++ b/yaffs_guts.h @@ -51,14 +51,12 @@ #define YAFFS_MAX_CHUNK_ID 0x000FFFFF - #define YAFFS_ALLOCATION_NOBJECTS 100 #define YAFFS_ALLOCATION_NTNODES 100 #define YAFFS_ALLOCATION_NLINKS 100 #define YAFFS_NOBJECT_BUCKETS 256 - #define YAFFS_OBJECT_SPACE 0x40000 #define YAFFS_MAX_OBJECT_ID (YAFFS_OBJECT_SPACE -1) @@ -85,7 +83,6 @@ #define YAFFS_OBJECTID_CHECKPOINT_DATA 0x20 #define YAFFS_SEQUENCE_CHECKPOINT_DATA 0x21 - #define YAFFS_MAX_SHORT_OP_CACHES 20 #define YAFFS_N_TEMP_BUFFERS 6 @@ -118,9 +115,7 @@ struct yaffs_cache { int n_bytes; /* Only valid if the cache is dirty */ int locked; /* Can't push out or flush while locked. */ u8 *data; -} ; - - +}; /* Tags structures in RAM * NB This uses bitfield. Bitfields should not straddle a u32 boundary otherwise @@ -137,10 +132,10 @@ struct yaffs_tags { unsigned n_bytes_msb:2; }; -union yaffs_tags_union{ +union yaffs_tags_union { struct yaffs_tags as_tags; u8 as_bytes[8]; -} ; +}; #endif @@ -151,7 +146,7 @@ enum yaffs_ecc_result { YAFFS_ECC_RESULT_NO_ERROR, YAFFS_ECC_RESULT_FIXED, YAFFS_ECC_RESULT_UNFIXED -} ; +}; enum yaffs_obj_type { YAFFS_OBJECT_TYPE_UNKNOWN, @@ -160,11 +155,11 @@ enum yaffs_obj_type { YAFFS_OBJECT_TYPE_DIRECTORY, YAFFS_OBJECT_TYPE_HARDLINK, YAFFS_OBJECT_TYPE_SPECIAL -} ; +}; #define YAFFS_OBJECT_TYPE_MAX YAFFS_OBJECT_TYPE_SPECIAL -struct yaffs_ext_tags{ +struct yaffs_ext_tags { unsigned validity0; unsigned chunk_used; /* Status of the chunk: used or unused */ @@ -188,11 +183,11 @@ struct yaffs_ext_tags{ unsigned extra_available; /* There is extra info available if this is not zero */ unsigned extra_parent_id; /* The parent object */ unsigned extra_is_shrink; /* Is it a shrink header? */ - unsigned extra_shadows; /* Does this shadow another object? */ + unsigned extra_shadows; /* Does this shadow another object? */ enum yaffs_obj_type extra_obj_type; /* What object type? */ - unsigned extra_length; /* Length if it is a file */ + unsigned extra_length; /* Length if it is a file */ unsigned extra_equiv_id; /* Equivalent object Id if it is a hard link */ unsigned validity1; @@ -200,12 +195,12 @@ struct yaffs_ext_tags{ }; /* Spare structure for YAFFS1 */ -struct yaffs_spare{ +struct yaffs_spare { u8 tb0; u8 tb1; u8 tb2; u8 tb3; - u8 page_status; /* set to 0 to delete the chunk */ + u8 page_status; /* set to 0 to delete the chunk */ u8 block_status; u8 tb4; u8 tb5; @@ -213,7 +208,7 @@ struct yaffs_spare{ u8 tb6; u8 tb7; u8 ecc2[3]; -} ; +}; /*Special structure for passing through to mtd */ struct yaffs_nand_spare { @@ -224,11 +219,11 @@ struct yaffs_nand_spare { /* Block data in RAM */ -enum yaffs_block_state{ +enum yaffs_block_state { YAFFS_BLOCK_STATE_UNKNOWN = 0, YAFFS_BLOCK_STATE_SCANNING, - /* Being scanned */ + /* Being scanned */ YAFFS_BLOCK_STATE_NEEDS_SCANNING, /* The block might have something on it (ie it is allocating or full, perhaps empty) @@ -246,13 +241,13 @@ enum yaffs_block_state{ * 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, @@ -267,30 +262,29 @@ enum yaffs_block_state{ /* This block is being garbage collected */ YAFFS_BLOCK_STATE_DEAD - /* This block has failed and is not in use */ + /* This block has failed and is not in use */ }; #define YAFFS_NUMBER_OF_BLOCK_STATES (YAFFS_BLOCK_STATE_DEAD + 1) - -struct yaffs_block_info{ +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. + /* 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 */ + 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 */ + u32 has_shrink_hdr:1; /* This block has at least one shrink object header */ + u32 seq_number; /* block sequence number for yaffs2 */ #endif -} ; +}; /* -------------------------- Object structure -------------------------------*/ /* This is the object structure as stored on NAND */ @@ -300,21 +294,17 @@ struct yaffs_obj_hdr { /* 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 */ + 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 /* File size applies to files only */ int file_size; @@ -327,14 +317,10 @@ struct yaffs_obj_hdr { u32 yst_rdev; /* device 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]; -#endif u32 inband_shadowed_obj_id; u32 inband_is_shrink; @@ -352,8 +338,6 @@ struct yaffs_tnode { struct yaffs_tnode *internal[YAFFS_NTNODES_INTERNAL]; }; - - /*------------------------ Object -----------------------------*/ /* An object can be one of: * - a directory (no data, has children links @@ -368,35 +352,33 @@ struct yaffs_file_var { u32 shrink_size; int top_level; struct yaffs_tnode *top; -} ; +}; -struct yaffs_dir_var{ - struct list_head children; /* list of child links */ +struct yaffs_dir_var { + struct list_head children; /* list of child links */ struct list_head dirty; /* Entry for list of dirty directories */ }; -struct yaffs_symlink_var{ +struct yaffs_symlink_var { YCHAR *alias; }; -struct yaffs_hardlink_var{ +struct yaffs_hardlink_var { struct yaffs_obj *equiv_obj; u32 equiv_id; }; -union yaffs_obj_var{ +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. The file should be in the unlinked directory.*/ + 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; @@ -415,16 +397,16 @@ struct yaffs_obj { 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 has_xattr:1; /* This object has xattribs. Valid if xattr_known. */ u8 serial; /* serial number of chunk in NAND. Cached here */ u16 sum; /* sum of the name to speed searching */ - struct yaffs_dev *my_dev; /* The device I'm on */ + struct yaffs_dev *my_dev; /* The device I'm on */ - struct list_head hash_link; /* list of objects in this hash bucket */ + struct list_head hash_link; /* list of objects in this hash bucket */ - struct list_head hard_links; /* all the equivalent hard linked objects */ + struct list_head hard_links; /* all the equivalent hard linked objects */ /* directory structure stuff */ /* also used for linking up the free list */ @@ -440,7 +422,7 @@ struct yaffs_obj { u32 yst_mode; -#ifdef CONFIG_YAFFS_SHORT_NAMES_IN_RAM +#ifndef CONFIG_YAFFS_NO_SHORT_NAMES YCHAR short_name[YAFFS_SHORT_NAME_LENGTH + 1]; #endif @@ -469,14 +451,13 @@ struct yaffs_obj { struct yaffs_obj_bucket { struct list_head list; int count; -} ; - +}; /* yaffs_checkpt_obj holds the definition of an object as dumped * by checkpointing. */ -struct yaffs_checkpt_obj{ +struct yaffs_checkpt_obj { int struct_type; u32 obj_id; u32 parent_id; @@ -500,42 +481,40 @@ struct yaffs_checkpt_obj{ struct yaffs_buffer { u8 *buffer; - int line; /* track from whence this buffer was allocated */ + int line; /* track from whence this buffer was allocated */ int max_line; -} ; +}; /*----------------- Device ---------------------------------*/ - 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 defualt values are zero. + */ - int inband_tags; /* Use unband tags */ - u32 total_bytes_per_chunk; /* Should be >= 512, does not need to be a power of 2 */ + int 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. */ - + /* reserved blocks on NOR and RAM. */ - int n_caches; /* If <= 0, then short op caching is disabled, else + 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. + * 10 to 20 is a good bet. */ - int use_nand_ecc; /* Flag to decide whether or not to use NANDECC on data (yaffs1) */ - int no_tags_ecc; /* Flag to decide whether or not to do ECC on packed tags (yaffs2) */ + int 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 is_yaffs2; /* Use yaffs2 mode on this device */ + int is_yaffs2; /* Use yaffs2 mode on this device */ - int empty_lost_n_found; /* Auto-empty lost+found directory on mount */ + int empty_lost_n_found; /* Auto-empty lost+found directory on mount */ int refresh_period; /* How often we should check to do a block refresh */ @@ -545,63 +524,62 @@ struct yaffs_param { int enable_xattr; /* Enable xattribs */ - /* NAND access functions (Must be set before calling YAFFS)*/ + /* NAND access functions (Must be set before calling YAFFS) */ - int (*write_chunk_fn) (struct yaffs_dev *dev, - int nand_chunk, const u8 *data, - const struct yaffs_spare *spare); - int (*read_chunk_fn) (struct yaffs_dev *dev, - int nand_chunk, u8 *data, - struct yaffs_spare *spare); - int (*erase_fn) (struct yaffs_dev *dev, - int flash_block); - int (*initialise_flash_fn) (struct yaffs_dev *dev); - int (*deinitialise_flash_fn) (struct yaffs_dev *dev); + int (*write_chunk_fn) (struct yaffs_dev * dev, + int nand_chunk, const u8 * data, + const struct yaffs_spare * spare); + int (*read_chunk_fn) (struct yaffs_dev * dev, + int nand_chunk, u8 * data, + struct yaffs_spare * spare); + int (*erase_fn) (struct yaffs_dev * dev, int flash_block); + int (*initialise_flash_fn) (struct yaffs_dev * dev); + int (*deinitialise_flash_fn) (struct yaffs_dev * dev); #ifdef CONFIG_YAFFS_YAFFS2 - 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 (*bad_block_fn) (struct yaffs_dev *dev, int block_no); - int (*query_block_fn) (struct yaffs_dev *dev, int block_no, - enum yaffs_block_state *state, u32 *seq_number); + 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 (*bad_block_fn) (struct yaffs_dev * dev, int block_no); + int (*query_block_fn) (struct yaffs_dev * dev, int block_no, + enum yaffs_block_state * state, + u32 * seq_number); #endif /* The remove_obj_fn function must be supplied by OS flavours that * need it. - * yaffs direct uses it to implement the faster readdir. - * Linux uses it to protect the directory during unlocking. + * 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 *obj); + void (*remove_obj_fn) (struct yaffs_obj * obj); /* Callback to mark the superblock dirty */ - void (*sb_dirty_fn)(struct yaffs_dev *dev); - + void (*sb_dirty_fn) (struct yaffs_dev * dev); + /* Callback to control garbage collection. */ - unsigned (*gc_control)(struct yaffs_dev *dev); + unsigned (*gc_control) (struct yaffs_dev * dev); - /* Debug control flags. Don't use unless you know what you're doing */ + /* 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 */ }; - struct yaffs_dev { struct yaffs_param param; - /* 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; @@ -609,12 +587,12 @@ struct yaffs_dev { struct list_head dev_list; /* Runtime parameters. Set up by YAFFS. */ - int data_bytes_per_chunk; + int data_bytes_per_chunk; - /* Non-wide tnode stuff */ + /* Non-wide tnode stuff */ u16 chunk_grp_bits; /* Number of bits that need to be resolved if - * the tnodes are not wide enough. - */ + * the tnodes are not wide enough. + */ u16 chunk_grp_size; /* == 2^^chunk_grp_bits */ /* Stuff to support wide tnodes */ @@ -623,26 +601,22 @@ struct yaffs_dev { 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 power-of-2 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 checkpoint pages */ int checkpt_byte_count; int checkpt_byte_offs; u8 *checkpt_buffer; @@ -656,11 +630,11 @@ struct yaffs_dev { 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 */ struct yaffs_block_info *block_info; - u8 *chunk_bits; /* bitmap of chunks in use */ + u8 *chunk_bits; /* bitmap of chunks in use */ unsigned block_info_alt:1; /* was allocated using alternative strategy */ unsigned chunk_bits_alt:1; /* was allocated using alternative strategy */ int chunk_bit_stride; /* Number of bytes of chunk_bits per block. @@ -688,7 +662,7 @@ struct yaffs_dev { 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; @@ -713,12 +687,12 @@ struct yaffs_dev { struct yaffs_cache *cache; int cache_last_use; - /* Stuff for background deletion and 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. */ + 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 */ @@ -737,8 +711,7 @@ struct yaffs_dev { int refresh_skip; /* A skip down counter. Refresh happens when this gets to zero. */ /* Dirty directory handling */ - struct list_head dirty_dirs; /* List of dirty directories */ - + struct list_head dirty_dirs; /* List of dirty directories */ /* Statistcs */ u32 n_page_writes; @@ -764,19 +737,18 @@ struct yaffs_dev { }; - /* The CheckpointDevice structure holds the device information that changes at runtime and * must be preserved over unmount/mount cycles. */ -struct yaffs_checkpt_dev{ +struct yaffs_checkpt_dev { int struct_type; int n_erased_blocks; int alloc_block; /* Current block being allocated off */ u32 alloc_page; int n_free_chunks; - int n_deleted_files; /* Count of files awaiting deletion;*/ - int n_unlinked_files; /* Count of unlinked files. */ + int n_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 */ @@ -784,15 +756,13 @@ struct yaffs_checkpt_dev{ }; - -struct yaffs_checkpt_validity{ +struct yaffs_checkpt_validity { int struct_type; u32 magic; u32 version; u32 head; }; - struct yaffs_shadow_fixer { int obj_id; int shadowed_id; @@ -800,8 +770,8 @@ struct yaffs_shadow_fixer { }; /* Structure for doing xattr modifications */ -struct yaffs_xattr_mod{ - 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; @@ -809,7 +779,6 @@ struct yaffs_xattr_mod{ int result; }; - /*----------------------- YAFFS Functions -----------------------*/ int yaffs_guts_initialise(struct yaffs_dev *dev); @@ -817,30 +786,28 @@ void yaffs_deinitialise(struct yaffs_dev *dev); int yaffs_get_n_free_chunks(struct yaffs_dev *dev); -int yaffs_rename_obj(struct yaffs_obj *old_dir, const YCHAR *old_name, - struct yaffs_obj *new_dir, const YCHAR *new_name); +int yaffs_rename_obj(struct yaffs_obj *old_dir, const YCHAR * old_name, + struct yaffs_obj *new_dir, const YCHAR * new_name); -int yaffs_unlinker(struct yaffs_obj *dir, const YCHAR *name); +int yaffs_unlinker(struct yaffs_obj *dir, const YCHAR * name); int yaffs_del_obj(struct yaffs_obj *obj); -int yaffs_get_obj_name(struct yaffs_obj *obj, YCHAR *name, int buffer_size); +int yaffs_get_obj_name(struct yaffs_obj *obj, YCHAR * name, int buffer_size); int 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); -int yaffs_set_attribs(struct yaffs_obj *obj, struct iattr *attr); -int yaffs_get_attribs(struct yaffs_obj *obj, struct iattr *attr); - /* File operations */ -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_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); -struct yaffs_obj *yaffs_create_file(struct yaffs_obj *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(struct yaffs_obj *obj, int update_time, int data_sync); @@ -851,42 +818,40 @@ int yaffs_checkpoint_save(struct yaffs_dev *dev); int yaffs_checkpoint_restore(struct yaffs_dev *dev); /* Directory operations */ -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_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 */ -struct yaffs_obj *yaffs_link_obj(struct yaffs_obj *parent, const YCHAR *name, - struct yaffs_obj *equiv_obj); +struct yaffs_obj *yaffs_link_obj(struct yaffs_obj *parent, const YCHAR * name, + struct yaffs_obj *equiv_obj); struct yaffs_obj *yaffs_get_equivalent_obj(struct yaffs_obj *obj); /* Symlink operations */ -struct yaffs_obj *yaffs_create_symlink(struct yaffs_obj *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); YCHAR *yaffs_get_symlink_alias(struct yaffs_obj *obj); /* Special inodes (fifos, sockets and devices) */ -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(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); +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(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); +int yaffs_remove_xattrib(struct yaffs_obj *obj, const YCHAR * name); /* Special directories */ 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(struct yaffs_obj *obj); void yaffs_update_dirty_dirs(struct yaffs_dev *dev); @@ -899,49 +864,52 @@ int yaffs_dump_obj(struct yaffs_obj *obj); void yaffs_guts_test(struct yaffs_dev *dev); /* A few useful functions to be used within the core files*/ -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); +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, int line_no); -void yaffs_release_temp_buffer(struct yaffs_dev *dev, u8 *buffer, int line_no); +void yaffs_release_temp_buffer(struct yaffs_dev *dev, u8 * buffer, int line_no); struct yaffs_obj *yaffs_find_or_create_by_number(struct yaffs_dev *dev, - int number, - enum yaffs_obj_type type); + 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); + 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); + 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(struct yaffs_dev *dev, struct yaffs_obj *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); +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 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); + 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); +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); + struct yaffs_file_var *file_struct, + u32 chunk_id); -u32 yaffs_get_group_base(struct yaffs_dev *dev, struct yaffs_tnode *tn, unsigned pos); +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); #endif