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 | 883 |
1 files changed, 474 insertions, 409 deletions
diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_guts.h b/target/linux/generic/files/fs/yaffs2/yaffs_guts.h index a3b1102..88075a7 100644 --- a/target/linux/generic/files/fs/yaffs2/yaffs_guts.h +++ b/target/linux/generic/files/fs/yaffs2/yaffs_guts.h @@ -1,7 +1,7 @@ /* * YAFFS: Yet another Flash File System . A NAND-flash specific file system. * - * Copyright (C) 2002-2007 Aleph One Ltd. + * Copyright (C) 2002-2010 Aleph One Ltd. * for Toby Churchill Ltd and Brightstar Engineering * * Created by Charles Manning <charles@aleph1.co.uk> @@ -16,8 +16,9 @@ #ifndef __YAFFS_GUTS_H__ #define __YAFFS_GUTS_H__ -#include "devextras.h" #include "yportenv.h" +#include "devextras.h" +#include "yaffs_list.h" #define YAFFS_OK 1 #define YAFFS_FAIL 0 @@ -52,7 +53,6 @@ #define YAFFS_MAX_CHUNK_ID 0x000FFFFF -#define YAFFS_UNUSED_OBJECT_ID 0x0003FFFF #define YAFFS_ALLOCATION_NOBJECTS 100 #define YAFFS_ALLOCATION_NTNODES 100 @@ -62,8 +62,9 @@ #define YAFFS_OBJECT_SPACE 0x40000 +#define YAFFS_MAX_OBJECT_ID (YAFFS_OBJECT_SPACE -1) -#define YAFFS_CHECKPOINT_VERSION 3 +#define YAFFS_CHECKPOINT_VERSION 4 #ifdef CONFIG_YAFFS_UNICODE #define YAFFS_MAX_NAME_LENGTH 127 @@ -81,12 +82,11 @@ #define YAFFS_OBJECTID_UNLINKED 3 #define YAFFS_OBJECTID_DELETED 4 -/* Sseudo object ids for checkpointing */ +/* Pseudo object ids for checkpointing */ #define YAFFS_OBJECTID_SB_HEADER 0x10 #define YAFFS_OBJECTID_CHECKPOINT_DATA 0x20 #define YAFFS_SEQUENCE_CHECKPOINT_DATA 0x21 -/* */ #define YAFFS_MAX_SHORT_OP_CACHES 20 @@ -113,18 +113,14 @@ /* ChunkCache is used for short read/write operations.*/ typedef struct { - struct yaffs_ObjectStruct *object; - int chunkId; - int lastUse; + struct yaffs_obj_s *object; + int chunk_id; + int last_use; int dirty; - int nBytes; /* Only valid if the cache is dirty */ + int n_bytes; /* Only valid if the cache is dirty */ int locked; /* Can't push out or flush while locked. */ -#ifdef CONFIG_YAFFS_YAFFS2 __u8 *data; -#else - __u8 data[YAFFS_BYTES_PER_CHUNK]; -#endif -} yaffs_ChunkCache; +} yaffs_cache_t; @@ -135,18 +131,18 @@ typedef struct { #ifndef CONFIG_YAFFS_NO_YAFFS1 typedef struct { - unsigned chunkId:20; - unsigned serialNumber:2; - unsigned byteCountLSB:10; - unsigned objectId:18; + unsigned chunk_id:20; + unsigned serial_number:2; + unsigned n_bytes_lsb:10; + unsigned obj_id:18; unsigned ecc:12; - unsigned byteCountMSB:2; -} yaffs_Tags; + unsigned n_bytes_msb:2; +} yaffs_tags_t; typedef union { - yaffs_Tags asTags; - __u8 asBytes[8]; -} yaffs_TagsUnion; + yaffs_tags_t as_tags; + __u8 as_bytes[8]; +} yaffs_tags_union_t; #endif @@ -157,7 +153,7 @@ typedef enum { YAFFS_ECC_RESULT_NO_ERROR, YAFFS_ECC_RESULT_FIXED, YAFFS_ECC_RESULT_UNFIXED -} yaffs_ECCResult; +} yaffs_ecc_result; typedef enum { YAFFS_OBJECT_TYPE_UNKNOWN, @@ -166,64 +162,64 @@ typedef enum { YAFFS_OBJECT_TYPE_DIRECTORY, YAFFS_OBJECT_TYPE_HARDLINK, YAFFS_OBJECT_TYPE_SPECIAL -} yaffs_ObjectType; +} yaffs_obj_type; #define YAFFS_OBJECT_TYPE_MAX YAFFS_OBJECT_TYPE_SPECIAL typedef struct { - unsigned validMarker0; - unsigned chunkUsed; /* Status of the chunk: used or unused */ - unsigned objectId; /* If 0 then this is not part of an object (unused) */ - unsigned chunkId; /* If 0 then this is a header, else a data chunk */ - unsigned byteCount; /* Only valid for data chunks */ + unsigned validity1; + unsigned chunk_used; /* Status of the chunk: used or unused */ + unsigned obj_id; /* If 0 then this is not part of an object (unused) */ + unsigned chunk_id; /* If 0 then this is a header, else a data chunk */ + unsigned n_bytes; /* Only valid for data chunks */ /* The following stuff only has meaning when we read */ - yaffs_ECCResult eccResult; - unsigned blockBad; + yaffs_ecc_result ecc_result; + unsigned block_bad; /* YAFFS 1 stuff */ - unsigned chunkDeleted; /* The chunk is marked deleted */ - unsigned serialNumber; /* Yaffs1 2-bit serial number */ + unsigned is_deleted; /* The chunk is marked deleted */ + unsigned serial_number; /* Yaffs1 2-bit serial number */ /* YAFFS2 stuff */ - unsigned sequenceNumber; /* The sequence number of this block */ + unsigned seq_number; /* The sequence number of this block */ /* Extra info if this is an object header (YAFFS2 only) */ - unsigned extraHeaderInfoAvailable; /* There is extra info available if this is not zero */ - unsigned extraParentObjectId; /* The parent object */ - unsigned extraIsShrinkHeader; /* Is it a shrink header? */ - unsigned extraShadows; /* Does this shadow another object? */ + unsigned extra_available; /* There is extra info available if this is not zero */ + unsigned extra_parent_id; /* The parent object */ + unsigned extra_is_shrink; /* Is it a shrink header? */ + unsigned extra_shadows; /* Does this shadow another object? */ - yaffs_ObjectType extraObjectType; /* What object type? */ + yaffs_obj_type extra_obj_type; /* What object type? */ - unsigned extraFileLength; /* Length if it is a file */ - unsigned extraEquivalentObjectId; /* Equivalent object Id if it is a hard link */ + unsigned extra_length; /* Length if it is a file */ + unsigned extra_equiv_id; /* Equivalent object Id if it is a hard link */ - unsigned validMarker1; + unsigned validty1; -} yaffs_ExtendedTags; +} yaffs_ext_tags; /* Spare structure for YAFFS1 */ typedef struct { - __u8 tagByte0; - __u8 tagByte1; - __u8 tagByte2; - __u8 tagByte3; - __u8 pageStatus; /* set to 0 to delete the chunk */ - __u8 blockStatus; - __u8 tagByte4; - __u8 tagByte5; + __u8 tb0; + __u8 tb1; + __u8 tb2; + __u8 tb3; + __u8 page_status; /* set to 0 to delete the chunk */ + __u8 block_status; + __u8 tb4; + __u8 tb5; __u8 ecc1[3]; - __u8 tagByte6; - __u8 tagByte7; + __u8 tb6; + __u8 tb7; __u8 ecc2[3]; -} yaffs_Spare; +} yaffs_spare; /*Special structure for passing through to mtd */ -struct yaffs_NANDSpare { - yaffs_Spare spare; +struct yaffs_nand_spare { + yaffs_spare spare; int eccres1; int eccres2; }; @@ -234,6 +230,8 @@ typedef enum { YAFFS_BLOCK_STATE_UNKNOWN = 0, YAFFS_BLOCK_STATE_SCANNING, + /* Being scanned */ + YAFFS_BLOCK_STATE_NEEDS_SCANNING, /* The block might have something on it (ie it is allocating or full, perhaps empty) * but it needs to be scanned to determine its true state. @@ -249,67 +247,69 @@ typedef enum { /* This block is partially allocated. * At least one page holds valid data. * This is the one currently being used for page - * allocation. Should never be more than one of these + * allocation. Should never be more than one of these. + * If a block is only partially allocated at mount it is treated as full. */ YAFFS_BLOCK_STATE_FULL, /* All the pages in this block have been allocated. + * If a block was only partially allocated when mounted we treat + * it as fully allocated. */ YAFFS_BLOCK_STATE_DIRTY, - /* All pages have been allocated and deleted. + /* The block was full and now all chunks have been deleted. * Erase me, reuse me. */ YAFFS_BLOCK_STATE_CHECKPOINT, - /* This block is assigned to holding checkpoint data. - */ + /* This block is assigned to holding checkpoint data. */ YAFFS_BLOCK_STATE_COLLECTING, /* This block is being garbage collected */ YAFFS_BLOCK_STATE_DEAD /* This block has failed and is not in use */ -} yaffs_BlockState; +} yaffs_block_state_t; #define YAFFS_NUMBER_OF_BLOCK_STATES (YAFFS_BLOCK_STATE_DEAD + 1) typedef struct { - int softDeletions:10; /* number of soft deleted pages */ - int pagesInUse:10; /* number of pages in use */ - unsigned blockState:4; /* One of the above block states. NB use unsigned because enum is sometimes an int */ - __u32 needsRetiring:1; /* Data has failed on this block, need to get valid data off */ + int soft_del_pages:10; /* number of soft deleted pages */ + int pages_in_use:10; /* number of pages in use */ + unsigned block_state:4; /* One of the above block states. NB use unsigned because enum is sometimes an int */ + __u32 needs_retiring:1; /* Data has failed on this block, need to get valid data off */ /* and retire the block. */ - __u32 skipErasedCheck:1; /* If this is set we can skip the erased check on this block */ - __u32 gcPrioritise:1; /* An ECC check or blank check has failed on this block. + __u32 skip_erased_check:1; /* If this is set we can skip the erased check on this block */ + __u32 gc_prioritise:1; /* An ECC check or blank check has failed on this block. It should be prioritised for GC */ - __u32 chunkErrorStrikes:3; /* How many times we've had ecc etc failures on this block and tried to reuse it */ + __u32 chunk_error_strikes:3; /* How many times we've had ecc etc failures on this block and tried to reuse it */ #ifdef CONFIG_YAFFS_YAFFS2 - __u32 hasShrinkHeader:1; /* This block has at least one shrink object header */ - __u32 sequenceNumber; /* block sequence number for yaffs2 */ + __u32 has_shrink_hdr:1; /* This block has at least one shrink object header */ + __u32 seq_number; /* block sequence number for yaffs2 */ #endif -} yaffs_BlockInfo; +} yaffs_block_info_t; /* -------------------------- Object structure -------------------------------*/ /* This is the object structure as stored on NAND */ typedef struct { - yaffs_ObjectType type; + yaffs_obj_type type; /* Apply to everything */ - int parentObjectId; - __u16 sum__NoLongerUsed; /* checksum of name. No longer used */ + int parent_obj_id; + __u16 sum_no_longer_used; /* checksum of name. No longer used */ YCHAR name[YAFFS_MAX_NAME_LENGTH + 1]; /* The following apply to directories, files, symlinks - not hard links */ __u32 yst_mode; /* protection */ #ifdef CONFIG_YAFFS_WINCE - __u32 notForWinCE[5]; + __u32 not_for_wince[5]; #else __u32 yst_uid; __u32 yst_gid; @@ -319,10 +319,10 @@ typedef struct { #endif /* File size applies to files only */ - int fileSize; + int file_size; /* Equivalent object id applies to hard links only. */ - int equivalentObjectId; + int equiv_id; /* Alias is for symlinks only. */ YCHAR alias[YAFFS_MAX_ALIAS_LENGTH + 1]; @@ -334,40 +334,29 @@ typedef struct { __u32 win_atime[2]; __u32 win_mtime[2]; #else - __u32 roomToGrow[6]; + __u32 room_to_grow[6]; #endif - __u32 inbandShadowsObject; - __u32 inbandIsShrink; + __u32 inband_shadowed_obj_id; + __u32 inband_is_shrink; - __u32 reservedSpace[2]; - int shadowsObject; /* This object header shadows the specified object if > 0 */ + __u32 reserved[2]; + int shadows_obj; /* This object header shadows the specified object if > 0 */ - /* isShrink applies to object headers written when we shrink the file (ie resize) */ - __u32 isShrink; + /* is_shrink applies to object headers written when we shrink the file (ie resize) */ + __u32 is_shrink; -} yaffs_ObjectHeader; +} yaffs_obj_header; /*--------------------------- Tnode -------------------------- */ -union yaffs_Tnode_union { -#ifdef CONFIG_YAFFS_TNODE_LIST_DEBUG - union yaffs_Tnode_union *internal[YAFFS_NTNODES_INTERNAL + 1]; -#else - union yaffs_Tnode_union *internal[YAFFS_NTNODES_INTERNAL]; -#endif -/* __u16 level0[YAFFS_NTNODES_LEVEL0]; */ +union yaffs_tnode_union { + union yaffs_tnode_union *internal[YAFFS_NTNODES_INTERNAL]; }; -typedef union yaffs_Tnode_union yaffs_Tnode; - -struct yaffs_TnodeList_struct { - struct yaffs_TnodeList_struct *next; - yaffs_Tnode *tnodes; -}; +typedef union yaffs_tnode_union yaffs_tnode_t; -typedef struct yaffs_TnodeList_struct yaffs_TnodeList; /*------------------------ Object -----------------------------*/ /* An object can be one of: @@ -378,82 +367,85 @@ typedef struct yaffs_TnodeList_struct yaffs_TnodeList; */ typedef struct { - __u32 fileSize; - __u32 scannedFileSize; - __u32 shrinkSize; - int topLevel; - yaffs_Tnode *top; -} yaffs_FileStructure; + __u32 file_size; + __u32 scanned_size; + __u32 shrink_size; + int top_level; + yaffs_tnode_t *top; +} yaffs_file_s; typedef struct { struct ylist_head children; /* list of child links */ -} yaffs_DirectoryStructure; + struct ylist_head dirty; /* Entry for list of dirty directories */ +} yaffs_dir_s; typedef struct { YCHAR *alias; -} yaffs_SymLinkStructure; +} yaffs_symlink_t; typedef struct { - struct yaffs_ObjectStruct *equivalentObject; - __u32 equivalentObjectId; -} yaffs_HardLinkStructure; + struct yaffs_obj_s *equiv_obj; + __u32 equiv_id; +} yaffs_hard_link_s; typedef union { - yaffs_FileStructure fileVariant; - yaffs_DirectoryStructure directoryVariant; - yaffs_SymLinkStructure symLinkVariant; - yaffs_HardLinkStructure hardLinkVariant; -} yaffs_ObjectVariant; + yaffs_file_s file_variant; + yaffs_dir_s dir_variant; + yaffs_symlink_t symlink_variant; + yaffs_hard_link_s hardlink_variant; +} yaffs_obj_variant; + -struct yaffs_ObjectStruct { + +struct yaffs_obj_s { __u8 deleted:1; /* This should only apply to unlinked files. */ - __u8 softDeleted:1; /* it has also been soft deleted */ + __u8 soft_del:1; /* it has also been soft deleted */ __u8 unlinked:1; /* An unlinked file. The file should be in the unlinked directory.*/ __u8 fake:1; /* A fake object has no presence on NAND. */ - __u8 renameAllowed:1; /* Some objects are not allowed to be renamed. */ - __u8 unlinkAllowed:1; + __u8 rename_allowed:1; /* Some objects are not allowed to be renamed. */ + __u8 unlink_allowed:1; __u8 dirty:1; /* the object needs to be written to flash */ __u8 valid:1; /* When the file system is being loaded up, this * object might be created before the data * is available (ie. file data records appear before the header). */ - __u8 lazyLoaded:1; /* This object has been lazy loaded and is missing some detail */ + __u8 lazy_loaded:1; /* This object has been lazy loaded and is missing some detail */ - __u8 deferedFree:1; /* For Linux kernel. Object is removed from NAND, but is + __u8 defered_free:1; /* For Linux kernel. Object is removed from NAND, but is * still in the inode cache. Free of object is defered. * until the inode is released. */ - __u8 beingCreated:1; /* This object is still being created so skip some checks. */ + __u8 being_created:1; /* This object is still being created so skip some checks. */ + __u8 is_shadowed:1; /* This object is shadowed on the way to being renamed. */ + + __u8 xattr_known:1; /* We know if this has object has xattribs or not. */ + __u8 has_xattr:1; /* This object has xattribs. Valid if xattr_known. */ __u8 serial; /* serial number of chunk in NAND. Cached here */ __u16 sum; /* sum of the name to speed searching */ - struct yaffs_DeviceStruct *myDev; /* The device I'm on */ + struct yaffs_dev_s *my_dev; /* The device I'm on */ - struct ylist_head hashLink; /* list of objects in this hash bucket */ + struct ylist_head hash_link; /* list of objects in this hash bucket */ - struct ylist_head hardLinks; /* all the equivalent hard linked objects */ + struct ylist_head hard_links; /* all the equivalent hard linked objects */ /* directory structure stuff */ /* also used for linking up the free list */ - struct yaffs_ObjectStruct *parent; + struct yaffs_obj_s *parent; struct ylist_head siblings; /* Where's my object header in NAND? */ - int hdrChunk; + int hdr_chunk; - int nDataChunks; /* Number of data chunks attached to the file. */ + int n_data_chunks; /* Number of data chunks attached to the file. */ - __u32 objectId; /* the object id value */ + __u32 obj_id; /* the object id value */ __u32 yst_mode; #ifdef CONFIG_YAFFS_SHORT_NAMES_IN_RAM - YCHAR shortName[YAFFS_SHORT_NAME_LENGTH + 1]; -#endif - -#ifndef __KERNEL__ - __u32 inUse; + YCHAR short_name[YAFFS_SHORT_NAME_LENGTH + 1]; #endif #ifdef CONFIG_YAFFS_WINCE @@ -470,53 +462,43 @@ struct yaffs_ObjectStruct { __u32 yst_rdev; -#ifdef __KERNEL__ - struct inode *myInode; + void *my_inode; -#endif - - yaffs_ObjectType variantType; - - yaffs_ObjectVariant variant; - -}; + yaffs_obj_type variant_type; -typedef struct yaffs_ObjectStruct yaffs_Object; + yaffs_obj_variant variant; -struct yaffs_ObjectList_struct { - yaffs_Object *objects; - struct yaffs_ObjectList_struct *next; }; -typedef struct yaffs_ObjectList_struct yaffs_ObjectList; +typedef struct yaffs_obj_s yaffs_obj_t; typedef struct { struct ylist_head list; int count; -} yaffs_ObjectBucket; +} yaffs_obj_bucket; -/* yaffs_CheckpointObject holds the definition of an object as dumped +/* yaffs_checkpt_obj_t holds the definition of an object as dumped * by checkpointing. */ typedef struct { - int structType; - __u32 objectId; - __u32 parentId; - int hdrChunk; - yaffs_ObjectType variantType:3; + int struct_type; + __u32 obj_id; + __u32 parent_id; + int hdr_chunk; + yaffs_obj_type variant_type:3; __u8 deleted:1; - __u8 softDeleted:1; + __u8 soft_del:1; __u8 unlinked:1; __u8 fake:1; - __u8 renameAllowed:1; - __u8 unlinkAllowed:1; + __u8 rename_allowed:1; + __u8 unlink_allowed:1; __u8 serial; - int nDataChunks; - __u32 fileSizeOrEquivalentObjectId; -} yaffs_CheckpointObject; + int n_data_chunks; + __u32 size_or_equiv_obj; +} yaffs_checkpt_obj_t; /*--------------------- Temporary buffers ---------------- * @@ -526,379 +508,462 @@ typedef struct { typedef struct { __u8 *buffer; int line; /* track from whence this buffer was allocated */ - int maxLine; -} yaffs_TempBuffer; + int max_line; +} yaffs_buffer_t; /*----------------- Device ---------------------------------*/ -struct yaffs_DeviceStruct { - struct ylist_head devList; - const char *name; - - /* Entry parameters set up way early. Yaffs sets up the rest.*/ - int nDataBytesPerChunk; /* Should be a power of 2 >= 512 */ - int nChunksPerBlock; /* does not need to be a power of 2 */ - int spareBytesPerChunk; /* spare area size */ - int startBlock; /* Start block we're allowed to use */ - int endBlock; /* End block we're allowed to use */ - int nReservedBlocks; /* We want this tuneable so that we can reduce */ - /* reserved blocks on NOR and RAM. */ +struct yaffs_param_s { + const YCHAR *name; - /* Stuff used by the shared space checkpointing mechanism */ - /* If this value is zero, then this mechanism is disabled */ + /* + * Entry parameters set up way early. Yaffs sets up the rest. + * The structure should be zeroed out before use so that unused + * and defualt values are zero. + */ -/* int nCheckpointReservedBlocks; */ /* Blocks to reserve for checkpoint data */ + int inband_tags; /* Use unband tags */ + __u32 total_bytes_per_chunk; /* Should be >= 512, does not need to be a power of 2 */ + int chunks_per_block; /* does not need to be a power of 2 */ + int spare_bytes_per_chunk; /* spare area size */ + int start_block; /* Start block we're allowed to use */ + int end_block; /* End block we're allowed to use */ + int n_reserved_blocks; /* We want this tuneable so that we can reduce */ + /* reserved blocks on NOR and RAM. */ - int nShortOpCaches; /* If <= 0, then short op caching is disabled, else - * the number of short op caches (don't use too many) + int n_caches; /* If <= 0, then short op caching is disabled, else + * the number of short op caches (don't use too many). + * 10 to 20 is a good bet. */ + int use_nand_ecc; /* Flag to decide whether or not to use NANDECC on data (yaffs1) */ + int no_tags_ecc; /* Flag to decide whether or not to do ECC on packed tags (yaffs2) */ - int useHeaderFileSize; /* Flag to determine if we should use file sizes from the header */ + int is_yaffs2; /* Use yaffs2 mode on this device */ - int useNANDECC; /* Flag to decide whether or not to use NANDECC */ + int empty_lost_n_found; /* Auto-empty lost+found directory on mount */ - void *genericDevice; /* Pointer to device context - * On an mtd this holds the mtd pointer. - */ - void *superBlock; + int refresh_period; /* How often we should check to do a block refresh */ + + /* Checkpoint control. Can be set before or after initialisation */ + __u8 skip_checkpt_rd; + __u8 skip_checkpt_wr; + + int enable_xattr; /* Enable xattribs */ /* NAND access functions (Must be set before calling YAFFS)*/ - int (*writeChunkToNAND) (struct yaffs_DeviceStruct *dev, - int chunkInNAND, const __u8 *data, - const yaffs_Spare *spare); - int (*readChunkFromNAND) (struct yaffs_DeviceStruct *dev, - int chunkInNAND, __u8 *data, - yaffs_Spare *spare); - int (*eraseBlockInNAND) (struct yaffs_DeviceStruct *dev, - int blockInNAND); - int (*initialiseNAND) (struct yaffs_DeviceStruct *dev); - int (*deinitialiseNAND) (struct yaffs_DeviceStruct *dev); + int (*write_chunk_fn) (struct yaffs_dev_s *dev, + int nand_chunk, const __u8 *data, + const yaffs_spare *spare); + int (*read_chunk_fn) (struct yaffs_dev_s *dev, + int nand_chunk, __u8 *data, + yaffs_spare *spare); + int (*erase_fn) (struct yaffs_dev_s *dev, + int flash_block); + int (*initialise_flash_fn) (struct yaffs_dev_s *dev); + int (*deinitialise_flash_fn) (struct yaffs_dev_s *dev); #ifdef CONFIG_YAFFS_YAFFS2 - int (*writeChunkWithTagsToNAND) (struct yaffs_DeviceStruct *dev, - int chunkInNAND, const __u8 *data, - const yaffs_ExtendedTags *tags); - int (*readChunkWithTagsFromNAND) (struct yaffs_DeviceStruct *dev, - int chunkInNAND, __u8 *data, - yaffs_ExtendedTags *tags); - int (*markNANDBlockBad) (struct yaffs_DeviceStruct *dev, int blockNo); - int (*queryNANDBlock) (struct yaffs_DeviceStruct *dev, int blockNo, - yaffs_BlockState *state, __u32 *sequenceNumber); + int (*write_chunk_tags_fn) (struct yaffs_dev_s *dev, + int nand_chunk, const __u8 *data, + const yaffs_ext_tags *tags); + int (*read_chunk_tags_fn) (struct yaffs_dev_s *dev, + int nand_chunk, __u8 *data, + yaffs_ext_tags *tags); + int (*bad_block_fn) (struct yaffs_dev_s *dev, int block_no); + int (*query_block_fn) (struct yaffs_dev_s *dev, int block_no, + yaffs_block_state_t *state, __u32 *seq_number); #endif - int isYaffs2; - - /* The removeObjectCallback function must be supplied by OS flavours that - * need it. The Linux kernel does not use this, but yaffs direct does use - * it to implement the faster readdir + /* The remove_obj_fn function must be supplied by OS flavours that + * need it. + * yaffs direct uses it to implement the faster readdir. + * Linux uses it to protect the directory during unlocking. */ - void (*removeObjectCallback)(struct yaffs_ObjectStruct *obj); + void (*remove_obj_fn)(struct yaffs_obj_s *obj); + + /* Callback to mark the superblock dirty */ + void (*sb_dirty_fn)(struct yaffs_dev_s *dev); + + /* Callback to control garbage collection. */ + unsigned (*gc_control)(struct yaffs_dev_s *dev); + + /* Debug control flags. Don't use unless you know what you're doing */ + int use_header_file_size; /* Flag to determine if we should use file sizes from the header */ + int disable_lazy_load; /* Disable lazy loading on this device */ + int wide_tnodes_disabled; /* Set to disable wide tnodes */ + int disable_soft_del; /* yaffs 1 only: Set to disable the use of softdeletion. */ + + int defered_dir_update; /* Set to defer directory updates */ + +#ifdef CONFIG_YAFFS_AUTO_UNICODE + int auto_unicode; +#endif + int always_check_erased; /* Force chunk erased check always on */ +}; - /* Callback to mark the superblock dirsty */ - void (*markSuperBlockDirty)(void *superblock); +typedef struct yaffs_param_s yaffs_param_t; - int wideTnodesDisabled; /* Set to disable wide tnodes */ +struct yaffs_dev_s { + struct yaffs_param_s param; - YCHAR *pathDividers; /* String of legal path dividers */ + /* Context storage. Holds extra OS specific data for this device */ + void *os_context; + void *driver_context; - /* End of stuff that must be set before initialisation. */ - - /* Checkpoint control. Can be set before or after initialisation */ - __u8 skipCheckpointRead; - __u8 skipCheckpointWrite; + struct ylist_head dev_list; /* Runtime parameters. Set up by YAFFS. */ + int data_bytes_per_chunk; - __u16 chunkGroupBits; /* 0 for devices <= 32MB. else log2(nchunks) - 16 */ - __u16 chunkGroupSize; /* == 2^^chunkGroupBits */ + /* Non-wide tnode stuff */ + __u16 chunk_grp_bits; /* Number of bits that need to be resolved if + * the tnodes are not wide enough. + */ + __u16 chunk_grp_size; /* == 2^^chunk_grp_bits */ /* Stuff to support wide tnodes */ - __u32 tnodeWidth; - __u32 tnodeMask; + __u32 tnode_width; + __u32 tnode_mask; + __u32 tnode_size; /* Stuff for figuring out file offset to chunk conversions */ - __u32 chunkShift; /* Shift value */ - __u32 chunkDiv; /* Divisor after shifting: 1 for power-of-2 sizes */ - __u32 chunkMask; /* Mask to use for power-of-2 case */ - - /* Stuff to handle inband tags */ - int inbandTags; - __u32 totalBytesPerChunk; + __u32 chunk_shift; /* Shift value */ + __u32 chunk_div; /* Divisor after shifting: 1 for power-of-2 sizes */ + __u32 chunk_mask; /* Mask to use for power-of-2 case */ -#ifdef __KERNEL__ - - struct semaphore sem; /* Semaphore for waiting on erasure.*/ - struct semaphore grossLock; /* Gross locking semaphore */ - __u8 *spareBuffer; /* For mtdif2 use. Don't know the size of the buffer - * at compile time so we have to allocate it. - */ - void (*putSuperFunc) (struct super_block *sb); -#endif - int isMounted; - int isCheckpointed; + int is_mounted; + int read_only; + int is_checkpointed; /* Stuff to support block offsetting to support start block zero */ - int internalStartBlock; - int internalEndBlock; - int blockOffset; - int chunkOffset; + int internal_start_block; + int internal_end_block; + int block_offset; + int chunk_offset; /* Runtime checkpointing stuff */ - int checkpointPageSequence; /* running sequence number of checkpoint pages */ - int checkpointByteCount; - int checkpointByteOffset; - __u8 *checkpointBuffer; - int checkpointOpenForWrite; - int blocksInCheckpoint; - int checkpointCurrentChunk; - int checkpointCurrentBlock; - int checkpointNextBlock; - int *checkpointBlockList; - int checkpointMaxBlocks; - __u32 checkpointSum; - __u32 checkpointXor; - - int nCheckpointBlocksRequired; /* Number of blocks needed to store current checkpoint set */ + int checkpt_page_seq; /* running sequence number of checkpoint pages */ + int checkpt_byte_count; + int checkpt_byte_offs; + __u8 *checkpt_buffer; + int checkpt_open_write; + int blocks_in_checkpt; + int checkpt_cur_chunk; + int checkpt_cur_block; + int checkpt_next_block; + int *checkpt_block_list; + int checkpt_max_blocks; + __u32 checkpt_sum; + __u32 checkpt_xor; + + int checkpoint_blocks_required; /* Number of blocks needed to store current checkpoint set */ /* Block Info */ - yaffs_BlockInfo *blockInfo; - __u8 *chunkBits; /* bitmap of chunks in use */ - unsigned blockInfoAlt:1; /* was allocated using alternative strategy */ - unsigned chunkBitsAlt:1; /* was allocated using alternative strategy */ - int chunkBitmapStride; /* Number of bytes of chunkBits per block. - * Must be consistent with nChunksPerBlock. + yaffs_block_info_t *block_info; + __u8 *chunk_bits; /* bitmap of chunks in use */ + unsigned block_info_alt:1; /* was allocated using alternative strategy */ + unsigned chunk_bits_alt:1; /* was allocated using alternative strategy */ + int chunk_bit_stride; /* Number of bytes of chunk_bits per block. + * Must be consistent with chunks_per_block. */ - int nErasedBlocks; - int allocationBlock; /* Current block being allocated off */ - __u32 allocationPage; - int allocationBlockFinder; /* Used to search for next allocation block */ - - /* Runtime state */ - int nTnodesCreated; - yaffs_Tnode *freeTnodes; - int nFreeTnodes; - yaffs_TnodeList *allocatedTnodeList; - - int isDoingGC; - int gcBlock; - int gcChunk; - - int nObjectsCreated; - yaffs_Object *freeObjects; - int nFreeObjects; + int n_erased_blocks; + int alloc_block; /* Current block being allocated off */ + __u32 alloc_page; + int alloc_block_finder; /* Used to search for next allocation block */ - int nHardLinks; + /* Object and Tnode memory management */ + void *allocator; + int n_obj; + int n_tnodes; - yaffs_ObjectList *allocatedObjectList; + int n_hardlinks; - yaffs_ObjectBucket objectBucket[YAFFS_NOBJECT_BUCKETS]; + yaffs_obj_bucket obj_bucket[YAFFS_NOBJECT_BUCKETS]; + __u32 bucket_finder; - int nFreeChunks; + int n_free_chunks; - int currentDirtyChecker; /* Used to find current dirtiest block */ + /* Garbage collection control */ + __u32 *gc_cleanup_list; /* objects to delete at the end of a GC. */ + __u32 n_clean_ups; - __u32 *gcCleanupList; /* objects to delete at the end of a GC. */ - int nonAggressiveSkip; /* GC state/mode */ - - /* Statistcs */ - int nPageWrites; - int nPageReads; - int nBlockErasures; - int nErasureFailures; - int nGCCopies; - int garbageCollections; - int passiveGarbageCollections; - int nRetriedWrites; - int nRetiredBlocks; - int eccFixed; - int eccUnfixed; - int tagsEccFixed; - int tagsEccUnfixed; - int nDeletions; - int nUnmarkedDeletions; - - int hasPendingPrioritisedGCs; /* We think this device might have pending prioritised gcs */ + unsigned has_pending_prioritised_gc; /* We think this device might have pending prioritised gcs */ + unsigned gc_disable; + unsigned gc_block_finder; + unsigned gc_dirtiest; + unsigned gc_pages_in_use; + unsigned gc_not_done; + unsigned gc_block; + unsigned gc_chunk; + unsigned gc_skip; /* Special directories */ - yaffs_Object *rootDir; - yaffs_Object *lostNFoundDir; + yaffs_obj_t *root_dir; + yaffs_obj_t *lost_n_found; /* Buffer areas for storing data to recover from write failures TODO - * __u8 bufferedData[YAFFS_CHUNKS_PER_BLOCK][YAFFS_BYTES_PER_CHUNK]; - * yaffs_Spare bufferedSpare[YAFFS_CHUNKS_PER_BLOCK]; + * __u8 buffered_data[YAFFS_CHUNKS_PER_BLOCK][YAFFS_BYTES_PER_CHUNK]; + * yaffs_spare buffered_spare[YAFFS_CHUNKS_PER_BLOCK]; */ - int bufferedBlock; /* Which block is buffered here? */ - int doingBufferedBlockRewrite; + int buffered_block; /* Which block is buffered here? */ + int doing_buffered_block_rewrite; - yaffs_ChunkCache *srCache; - int srLastUse; - - int cacheHits; + yaffs_cache_t *cache; + int cache_last_use; /* Stuff for background deletion and unlinked files.*/ - yaffs_Object *unlinkedDir; /* Directory where unlinked and deleted files live. */ - yaffs_Object *deletedDir; /* Directory where deleted objects are sent to disappear. */ - yaffs_Object *unlinkedDeletion; /* Current file being background deleted.*/ - int nDeletedFiles; /* Count of files awaiting deletion;*/ - int nUnlinkedFiles; /* Count of unlinked files. */ - int nBackgroundDeletions; /* Count of background deletions. */ - + yaffs_obj_t *unlinked_dir; /* Directory where unlinked and deleted files live. */ + yaffs_obj_t *del_dir; /* Directory where deleted objects are sent to disappear. */ + yaffs_obj_t *unlinked_deletion; /* Current file being background deleted.*/ + int n_deleted_files; /* Count of files awaiting deletion;*/ + int n_unlinked_files; /* Count of unlinked files. */ + int n_bg_deletions; /* Count of background deletions. */ /* Temporary buffer management */ - yaffs_TempBuffer tempBuffer[YAFFS_N_TEMP_BUFFERS]; - int maxTemp; - int tempInUse; - int unmanagedTempAllocations; - int unmanagedTempDeallocations; + yaffs_buffer_t temp_buffer[YAFFS_N_TEMP_BUFFERS]; + int max_temp; + int temp_in_use; + int unmanaged_buffer_allocs; + int unmanaged_buffer_deallocs; /* yaffs2 runtime stuff */ - unsigned sequenceNumber; /* Sequence number of currently allocating block */ - unsigned oldestDirtySequence; + unsigned seq_number; /* Sequence number of currently allocating block */ + unsigned oldest_dirty_seq; + unsigned oldest_dirty_block; + + /* Block refreshing */ + int refresh_skip; /* A skip down counter. Refresh happens when this gets to zero. */ + + /* Dirty directory handling */ + struct ylist_head dirty_dirs; /* List of dirty directories */ + + + /* Statistcs */ + __u32 n_page_writes; + __u32 n_page_reads; + __u32 n_erasures; + __u32 n_erase_failures; + __u32 n_gc_copies; + __u32 all_gcs; + __u32 passive_gc_count; + __u32 oldest_dirty_gc_count; + __u32 n_gc_blocks; + __u32 bg_gcs; + __u32 n_retired_writes; + __u32 n_retired_blocks; + __u32 n_ecc_fixed; + __u32 n_ecc_unfixed; + __u32 n_tags_ecc_fixed; + __u32 n_tags_ecc_unfixed; + __u32 n_deletions; + __u32 n_unmarked_deletions; + __u32 refresh_count; + __u32 cache_hits; }; -typedef struct yaffs_DeviceStruct yaffs_Device; +typedef struct yaffs_dev_s yaffs_dev_t; /* The static layout of block usage etc is stored in the super block header */ typedef struct { int StructType; int version; - int checkpointStartBlock; - int checkpointEndBlock; - int startBlock; - int endBlock; + int checkpt_start_block; + int checkpt_end_block; + int start_block; + int end_block; int rfu[100]; -} yaffs_SuperBlockHeader; +} yaffs_sb_header; /* The CheckpointDevice structure holds the device information that changes at runtime and * must be preserved over unmount/mount cycles. */ typedef struct { - int structType; - int nErasedBlocks; - int allocationBlock; /* Current block being allocated off */ - __u32 allocationPage; - int nFreeChunks; + int struct_type; + int n_erased_blocks; + int alloc_block; /* Current block being allocated off */ + __u32 alloc_page; + int n_free_chunks; - int nDeletedFiles; /* Count of files awaiting deletion;*/ - int nUnlinkedFiles; /* Count of unlinked files. */ - int nBackgroundDeletions; /* Count of background deletions. */ + int n_deleted_files; /* Count of files awaiting deletion;*/ + int n_unlinked_files; /* Count of unlinked files. */ + int n_bg_deletions; /* Count of background deletions. */ /* yaffs2 runtime stuff */ - unsigned sequenceNumber; /* Sequence number of currently allocating block */ - unsigned oldestDirtySequence; + unsigned seq_number; /* Sequence number of currently allocating block */ -} yaffs_CheckpointDevice; +} yaffs_checkpt_dev_t; typedef struct { - int structType; + int struct_type; __u32 magic; __u32 version; __u32 head; -} yaffs_CheckpointValidity; +} yaffs_checkpt_validty_t; + + +struct yaffs_shadow_fixer_s { + int obj_id; + int shadowed_id; + struct yaffs_shadow_fixer_s *next; +}; + +/* Structure for doing xattr modifications */ +typedef struct { + int set; /* If 0 then this is a deletion */ + const YCHAR *name; + const void *data; + int size; + int flags; + int result; +}yaffs_xattr_mod; /*----------------------- YAFFS Functions -----------------------*/ -int yaffs_GutsInitialise(yaffs_Device *dev); -void yaffs_Deinitialise(yaffs_Device *dev); +int yaffs_guts_initialise(yaffs_dev_t *dev); +void yaffs_deinitialise(yaffs_dev_t *dev); -int yaffs_GetNumberOfFreeChunks(yaffs_Device *dev); +int yaffs_get_n_free_chunks(yaffs_dev_t *dev); -int yaffs_RenameObject(yaffs_Object *oldDir, const YCHAR *oldName, - yaffs_Object *newDir, const YCHAR *newName); +int yaffs_rename_obj(yaffs_obj_t *old_dir, const YCHAR *old_name, + yaffs_obj_t *new_dir, const YCHAR *new_name); -int yaffs_Unlink(yaffs_Object *dir, const YCHAR *name); -int yaffs_DeleteObject(yaffs_Object *obj); +int yaffs_unlinker(yaffs_obj_t *dir, const YCHAR *name); +int yaffs_del_obj(yaffs_obj_t *obj); -int yaffs_GetObjectName(yaffs_Object *obj, YCHAR *name, int buffSize); -int yaffs_GetObjectFileLength(yaffs_Object *obj); -int yaffs_GetObjectInode(yaffs_Object *obj); -unsigned yaffs_GetObjectType(yaffs_Object *obj); -int yaffs_GetObjectLinkCount(yaffs_Object *obj); +int yaffs_get_obj_name(yaffs_obj_t *obj, YCHAR *name, int buffer_size); +int yaffs_get_obj_length(yaffs_obj_t *obj); +int yaffs_get_obj_inode(yaffs_obj_t *obj); +unsigned yaffs_get_obj_type(yaffs_obj_t *obj); +int yaffs_get_obj_link_count(yaffs_obj_t *obj); -int yaffs_SetAttributes(yaffs_Object *obj, struct iattr *attr); -int yaffs_GetAttributes(yaffs_Object *obj, struct iattr *attr); +int yaffs_set_attribs(yaffs_obj_t *obj, struct iattr *attr); +int yaffs_get_attribs(yaffs_obj_t *obj, struct iattr *attr); /* File operations */ -int yaffs_ReadDataFromFile(yaffs_Object *obj, __u8 *buffer, loff_t offset, - int nBytes); -int yaffs_WriteDataToFile(yaffs_Object *obj, const __u8 *buffer, loff_t offset, - int nBytes, int writeThrough); -int yaffs_ResizeFile(yaffs_Object *obj, loff_t newSize); +int yaffs_file_rd(yaffs_obj_t *obj, __u8 *buffer, loff_t offset, + int n_bytes); +int yaffs_wr_file(yaffs_obj_t *obj, const __u8 *buffer, loff_t offset, + int n_bytes, int write_trhrough); +int yaffs_resize_file(yaffs_obj_t *obj, loff_t new_size); -yaffs_Object *yaffs_MknodFile(yaffs_Object *parent, const YCHAR *name, +yaffs_obj_t *yaffs_create_file(yaffs_obj_t *parent, const YCHAR *name, __u32 mode, __u32 uid, __u32 gid); -int yaffs_FlushFile(yaffs_Object *obj, int updateTime); + +int yaffs_flush_file(yaffs_obj_t *obj, int update_time, int data_sync); /* Flushing and checkpointing */ -void yaffs_FlushEntireDeviceCache(yaffs_Device *dev); +void yaffs_flush_whole_cache(yaffs_dev_t *dev); -int yaffs_CheckpointSave(yaffs_Device *dev); -int yaffs_CheckpointRestore(yaffs_Device *dev); +int yaffs_checkpoint_save(yaffs_dev_t *dev); +int yaffs_checkpoint_restore(yaffs_dev_t *dev); /* Directory operations */ -yaffs_Object *yaffs_MknodDirectory(yaffs_Object *parent, const YCHAR *name, +yaffs_obj_t *yaffs_create_dir(yaffs_obj_t *parent, const YCHAR *name, __u32 mode, __u32 uid, __u32 gid); -yaffs_Object *yaffs_FindObjectByName(yaffs_Object *theDir, const YCHAR *name); -int yaffs_ApplyToDirectoryChildren(yaffs_Object *theDir, - int (*fn) (yaffs_Object *)); +yaffs_obj_t *yaffs_find_by_name(yaffs_obj_t *the_dir, const YCHAR *name); +int yaffs_ApplyToDirectoryChildren(yaffs_obj_t *the_dir, + int (*fn) (yaffs_obj_t *)); -yaffs_Object *yaffs_FindObjectByNumber(yaffs_Device *dev, __u32 number); +yaffs_obj_t *yaffs_find_by_number(yaffs_dev_t *dev, __u32 number); /* Link operations */ -yaffs_Object *yaffs_Link(yaffs_Object *parent, const YCHAR *name, - yaffs_Object *equivalentObject); +yaffs_obj_t *yaffs_link_obj(yaffs_obj_t *parent, const YCHAR *name, + yaffs_obj_t *equiv_obj); -yaffs_Object *yaffs_GetEquivalentObject(yaffs_Object *obj); +yaffs_obj_t *yaffs_get_equivalent_obj(yaffs_obj_t *obj); /* Symlink operations */ -yaffs_Object *yaffs_MknodSymLink(yaffs_Object *parent, const YCHAR *name, +yaffs_obj_t *yaffs_create_symlink(yaffs_obj_t *parent, const YCHAR *name, __u32 mode, __u32 uid, __u32 gid, const YCHAR *alias); -YCHAR *yaffs_GetSymlinkAlias(yaffs_Object *obj); +YCHAR *yaffs_get_symlink_alias(yaffs_obj_t *obj); /* Special inodes (fifos, sockets and devices) */ -yaffs_Object *yaffs_MknodSpecial(yaffs_Object *parent, const YCHAR *name, +yaffs_obj_t *yaffs_create_special(yaffs_obj_t *parent, const YCHAR *name, __u32 mode, __u32 uid, __u32 gid, __u32 rdev); + +int yaffs_set_xattrib(yaffs_obj_t *obj, const YCHAR *name, const void * value, int size, int flags); +int yaffs_get_xattrib(yaffs_obj_t *obj, const YCHAR *name, void *value, int size); +int yaffs_list_xattrib(yaffs_obj_t *obj, char *buffer, int size); +int yaffs_remove_xattrib(yaffs_obj_t *obj, const YCHAR *name); + /* Special directories */ -yaffs_Object *yaffs_Root(yaffs_Device *dev); -yaffs_Object *yaffs_LostNFound(yaffs_Device *dev); +yaffs_obj_t *yaffs_root(yaffs_dev_t *dev); +yaffs_obj_t *yaffs_lost_n_found(yaffs_dev_t *dev); #ifdef CONFIG_YAFFS_WINCE /* CONFIG_YAFFS_WINCE special stuff */ -void yfsd_WinFileTimeNow(__u32 target[2]); +void yfsd_win_file_time_now(__u32 target[2]); #endif -#ifdef __KERNEL__ +void yaffs_handle_defered_free(yaffs_obj_t *obj); -void yaffs_HandleDeferedFree(yaffs_Object *obj); -#endif +void yaffs_update_dirty_dirs(yaffs_dev_t *dev); -/* Debug dump */ -int yaffs_DumpObject(yaffs_Object *obj); +int yaffs_bg_gc(yaffs_dev_t *dev, unsigned urgency); -void yaffs_GutsTest(yaffs_Device *dev); - -/* A few useful functions */ -void yaffs_InitialiseTags(yaffs_ExtendedTags *tags); -void yaffs_DeleteChunk(yaffs_Device *dev, int chunkId, int markNAND, int lyn); -int yaffs_CheckFF(__u8 *buffer, int nBytes); -void yaffs_HandleChunkError(yaffs_Device *dev, yaffs_BlockInfo *bi); - -__u8 *yaffs_GetTempBuffer(yaffs_Device *dev, int lineNo); -void yaffs_ReleaseTempBuffer(yaffs_Device *dev, __u8 *buffer, int lineNo); +/* Debug dump */ +int yaffs_dump_obj(yaffs_obj_t *obj); + +void yaffs_guts_test(yaffs_dev_t *dev); + +/* A few useful functions to be used within the core files*/ +void yaffs_chunk_del(yaffs_dev_t *dev, int chunk_id, int mark_flash, int lyn); +int yaffs_check_ff(__u8 *buffer, int n_bytes); +void yaffs_handle_chunk_error(yaffs_dev_t *dev, yaffs_block_info_t *bi); + +__u8 *yaffs_get_temp_buffer(yaffs_dev_t *dev, int line_no); +void yaffs_release_temp_buffer(yaffs_dev_t *dev, __u8 *buffer, int line_no); + +yaffs_obj_t *yaffs_find_or_create_by_number(yaffs_dev_t *dev, + int number, + yaffs_obj_type type); +int yaffs_put_chunk_in_file(yaffs_obj_t *in, int inode_chunk, + int nand_chunk, int in_scan); +void yaffs_set_obj_name(yaffs_obj_t *obj, const YCHAR *name); +void yaffs_set_obj_name_from_oh(yaffs_obj_t *obj, const yaffs_obj_header *oh); +void yaffs_add_obj_to_dir(yaffs_obj_t *directory, + yaffs_obj_t *obj); +YCHAR *yaffs_clone_str(const YCHAR *str); +void yaffs_link_fixup(yaffs_dev_t *dev, yaffs_obj_t *hard_list); +void yaffs_block_became_dirty(yaffs_dev_t *dev, int block_no); +int yaffs_update_oh(yaffs_obj_t *in, const YCHAR *name, + int force, int is_shrink, int shadows, + yaffs_xattr_mod *xop); +void yaffs_handle_shadowed_obj(yaffs_dev_t *dev, int obj_id, + int backward_scanning); +int yaffs_check_alloc_available(yaffs_dev_t *dev, int n_chunks); +yaffs_tnode_t *yaffs_get_tnode(yaffs_dev_t *dev); +yaffs_tnode_t *yaffs_add_find_tnode_0(yaffs_dev_t *dev, + yaffs_file_s *file_struct, + __u32 chunk_id, + yaffs_tnode_t *passed_tn); + +int yaffs_do_file_wr(yaffs_obj_t *in, const __u8 *buffer, loff_t offset, + int n_bytes, int write_trhrough); +void yaffs_resize_file_down( yaffs_obj_t *obj, loff_t new_size); +void yaffs_skip_rest_of_block(yaffs_dev_t *dev); + +int yaffs_count_free_chunks(yaffs_dev_t *dev); + +yaffs_tnode_t *yaffs_find_tnode_0(yaffs_dev_t *dev, + yaffs_file_s *file_struct, + __u32 chunk_id); + +__u32 yaffs_get_group_base(yaffs_dev_t *dev, yaffs_tnode_t *tn, unsigned pos); #endif |