X-Git-Url: http://www.aleph1.co.uk/gitweb/?p=yaffs2.git;a=blobdiff_plain;f=yaffs_guts.h;h=3385bd4c6a8b3c86b6d5ca56afd53f49de9e78bf;hp=e66efcf206c50a55741e24a943592b1212c77d16;hb=9b9950b65bae80f37e783de48d424ff4691a201b;hpb=a8e9cfa2968a5f16ff9ae578cc1d3202ebef8725 diff --git a/yaffs_guts.h b/yaffs_guts.h index e66efcf..3385bd4 100644 --- a/yaffs_guts.h +++ b/yaffs_guts.h @@ -1,8 +1,7 @@ /* - * YAFFS: Yet another FFS. A NAND-flash specific file system. - * yaffs_guts.h: Configuration etc for yaffs_guts + * YAFFS: Yet another Flash File System . A NAND-flash specific file system. * - * Copyright (C) 2002 Aleph One Ltd. + * Copyright (C) 2002-2007 Aleph One Ltd. * for Toby Churchill Ltd and Brightstar Engineering * * Created by Charles Manning @@ -11,10 +10,7 @@ * it under the terms of the GNU Lesser General Public License version 2.1 as * published by the Free Software Foundation. * - * * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL. - * - * $Id: yaffs_guts.h,v 1.23 2006-09-21 08:13:59 charles Exp $ */ #ifndef __YAFFS_GUTS_H__ @@ -26,11 +22,11 @@ #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 a Y=0x59, + * Give us an A=0x41, + * Give us an FF=0xFF * Give us an S=0x53 - * And what have we got... + * And what have we got... */ #define YAFFS_MAGIC 0x5941FF53 @@ -67,7 +63,7 @@ #define YAFFS_OBJECT_SPACE 0x40000 -#define YAFFS_NCHECKPOINT_OBJECTS 5000 +#define YAFFS_CHECKPOINT_VERSION 3 #ifdef CONFIG_YAFFS_UNICODE #define YAFFS_MAX_NAME_LENGTH 127 @@ -94,18 +90,27 @@ #define YAFFS_MAX_SHORT_OP_CACHES 20 -#define YAFFS_N_TEMP_BUFFERS 4 +#define YAFFS_N_TEMP_BUFFERS 6 + +/* We limit the number attempts at sucessfully saving a chunk of data. + * Small-page devices have 32 pages per block; large-page devices have 64. + * Default to something in the order of 5 to 10 blocks worth of chunks. + */ +#define YAFFS_WR_ATTEMPTS (5*64) /* Sequence numbers are used in YAFFS2 to determine block allocation order. * 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 per 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 +/* Special sequence number for bad block that failed to be marked bad */ +#define YAFFS_SEQUENCE_BAD_BLOCK 0xFFFF0000 + /* ChunkCache is used for short read/write operations.*/ typedef struct { struct yaffs_ObjectStruct *object; @@ -132,11 +137,10 @@ typedef struct { typedef struct { unsigned chunkId:20; unsigned serialNumber:2; - unsigned byteCount:10; + unsigned byteCountLSB:10; unsigned objectId:18; unsigned ecc:12; - unsigned unusedStuff:2; - + unsigned byteCountMSB:2; } yaffs_Tags; typedef union { @@ -164,6 +168,8 @@ typedef enum { YAFFS_OBJECT_TYPE_SPECIAL } yaffs_ObjectType; +#define YAFFS_OBJECT_TYPE_MAX YAFFS_OBJECT_TYPE_SPECIAL + typedef struct { unsigned validMarker0; @@ -174,7 +180,7 @@ typedef struct { /* The following stuff only has meaning when we read */ yaffs_ECCResult eccResult; - unsigned blockBad; + unsigned blockBad; /* YAFFS 1 stuff */ unsigned chunkDeleted; /* The chunk is marked deleted */ @@ -240,42 +246,46 @@ typedef enum { /* This block is empty */ YAFFS_BLOCK_STATE_ALLOCATING, - /* This block is partially allocated. + /* 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 */ - YAFFS_BLOCK_STATE_FULL, + YAFFS_BLOCK_STATE_FULL, /* All the pages in this block have been allocated. */ YAFFS_BLOCK_STATE_DIRTY, - /* All pages have been allocated and deleted. + /* All pages have been allocated and deleted. * Erase me, reuse me. */ - YAFFS_BLOCK_STATE_CHECKPOINT, + YAFFS_BLOCK_STATE_CHECKPOINT, /* This block is assigned to holding checkpoint data. */ - YAFFS_BLOCK_STATE_COLLECTING, + YAFFS_BLOCK_STATE_COLLECTING, /* This block is being garbage collected */ - YAFFS_BLOCK_STATE_DEAD + YAFFS_BLOCK_STATE_DEAD /* This block has failed and is not in use */ } yaffs_BlockState; +#define YAFFS_NUMBER_OF_BLOCK_STATES (YAFFS_BLOCK_STATE_DEAD + 1) + + typedef struct { - int softDeletions:12; /* number of soft deleted pages */ - int pagesInUse:12; /* number of pages in use */ - yaffs_BlockState blockState:4; /* One of the above block states */ + 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 */ - /* 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 bank check has failed on this block. + /* 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. 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 */ #ifdef CONFIG_YAFFS_YAFFS2 __u32 hasShrinkHeader:1; /* This block has at least one shrink object header */ @@ -292,11 +302,11 @@ typedef struct { /* Apply to everything */ int parentObjectId; - __u16 sum__NoLongerUsed; /* checksum of name. No longer used */ + __u16 sum__NoLongerUsed; /* checksum of name. No longer used */ YCHAR name[YAFFS_MAX_NAME_LENGTH + 1]; - /* Thes following apply to directories, files, symlinks - not hard links */ - __u32 yst_mode; /* protection */ + /* The following apply to directories, files, symlinks - not hard links */ + __u32 yst_mode; /* protection */ #ifdef CONFIG_YAFFS_WINCE __u32 notForWinCE[5]; @@ -323,11 +333,14 @@ typedef struct { __u32 win_ctime[2]; __u32 win_atime[2]; __u32 win_mtime[2]; - __u32 roomToGrow[4]; #else - __u32 roomToGrow[10]; + __u32 roomToGrow[6]; + #endif + __u32 inbandShadowsObject; + __u32 inbandIsShrink; + __u32 reservedSpace[2]; int shadowsObject; /* This object header shadows the specified object if > 0 */ /* isShrink applies to object headers written when we shrink the file (ie resize) */ @@ -373,7 +386,7 @@ typedef struct { } yaffs_FileStructure; typedef struct { - struct list_head children; /* list of child links */ + struct ylist_head children; /* list of child links */ } yaffs_DirectoryStructure; typedef struct { @@ -400,7 +413,7 @@ struct yaffs_ObjectStruct { __u8 renameAllowed:1; /* Some objects are not allowed to be renamed. */ __u8 unlinkAllowed:1; __u8 dirty:1; /* the object needs to be written to flash */ - __u8 valid:1; /* When the file system is being loaded up, this + __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). */ @@ -410,23 +423,25 @@ struct yaffs_ObjectStruct { * 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 isShadowed:1; /* This object is shadowed on the way to being renamed. */ __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_DeviceStruct *myDev; /* The device I'm on */ - struct list_head hashLink; /* list of objects in this hash bucket */ + struct ylist_head hashLink; /* list of objects in this hash bucket */ - struct list_head hardLinks; /* all the equivalent hard linked objects */ + struct ylist_head hardLinks; /* all the equivalent hard linked objects */ /* directory structure stuff */ /* also used for linking up the free list */ - struct yaffs_ObjectStruct *parent; - struct list_head siblings; + struct yaffs_ObjectStruct *parent; + struct ylist_head siblings; /* Where's my object header in NAND? */ - int chunkId; + int hdrChunk; int nDataChunks; /* Number of data chunks attached to the file. */ @@ -477,34 +492,32 @@ struct yaffs_ObjectList_struct { typedef struct yaffs_ObjectList_struct yaffs_ObjectList; typedef struct { - struct list_head list; + struct ylist_head list; int count; } yaffs_ObjectBucket; -/* yaffs_CheckpointObject holds the definition of an object as dumped +/* yaffs_CheckpointObject holds the definition of an object as dumped * by checkpointing. */ typedef struct { - int structType; - __u32 objectId; + int structType; + __u32 objectId; __u32 parentId; - int chunkId; - + int hdrChunk; yaffs_ObjectType variantType:3; - __u8 deleted:1; - __u8 softDeleted:1; - __u8 unlinked:1; - __u8 fake:1; + __u8 deleted:1; + __u8 softDeleted:1; + __u8 unlinked:1; + __u8 fake:1; __u8 renameAllowed:1; __u8 unlinkAllowed:1; - __u8 serial; - - int nDataChunks; - __u32 fileSizeOrEquivalentObjectId; + __u8 serial; -}yaffs_CheckpointObject; + int nDataChunks; + __u32 fileSizeOrEquivalentObjectId; +} yaffs_CheckpointObject; /*--------------------- Temporary buffers ---------------- * @@ -520,28 +533,23 @@ typedef struct { /*----------------- Device ---------------------------------*/ struct yaffs_DeviceStruct { - struct list_head devList; + struct ylist_head devList; const char *name; /* Entry parameters set up way early. Yaffs sets up the rest.*/ - int nBytesPerChunk; /* Should be a power of 2 >= 512 */ + int nDataBytesPerChunk; /* Should be a power of 2 >= 512 */ int nChunksPerBlock; /* does not need to be a power of 2 */ - int nBytesPerSpare; /* spare area size */ + int spareBytesPerChunk; /* spare area size */ int startBlock; /* Start block we're allowed to use */ int endBlock; /* End block we're allowed to use */ int nReservedBlocks; /* We want this tuneable so that we can reduce */ /* reserved blocks on NOR and RAM. */ - - /* Stuff used by the partitioned checkpointing mechanism */ - int checkpointStartBlock; - int checkpointEndBlock; - + + /* Stuff used by the shared space checkpointing mechanism */ /* If this value is zero, then this mechanism is disabled */ - - int nCheckpointReservedBlocks; /* Blocks to reserve for checkpoint data */ - +/* int nCheckpointReservedBlocks; */ /* Blocks to reserve for checkpoint data */ int nShortOpCaches; /* If <= 0, then short op caching is disabled, else @@ -550,83 +558,102 @@ struct yaffs_DeviceStruct { int useHeaderFileSize; /* Flag to determine if we should use file sizes from the header */ - int useNANDECC; /* Flag to decide whether or not to use NANDECC */ + int useNANDECC; /* Flag to decide whether or not to use NANDECC on data (yaffs1) */ + int noTagsECC; /* Flag to decide whether or not to do ECC on packed tags (yaffs2) */ + + int disableLazyLoad; /* Disable lazy loading on this device */ void *genericDevice; /* Pointer to device context * On an mtd this holds the mtd pointer. */ - void *superBlock; - + void *superBlock; + /* 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 (*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); #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, int *sequenceNumber); + int (*writeChunkWithTagsToNAND) (struct yaffs_DeviceStruct *dev, + int chunkInNAND, const __u8 *data, + const yaffs_ExtendedTags *tags); + int (*readChunkWithTagsFromNAND) (struct yaffs_DeviceStruct *dev, + int chunkInNAND, __u8 *data, + yaffs_ExtendedTags *tags); + int (*markNANDBlockBad) (struct yaffs_DeviceStruct *dev, int blockNo); + int (*queryNANDBlock) (struct yaffs_DeviceStruct *dev, int blockNo, + yaffs_BlockState *state, __u32 *sequenceNumber); #endif int isYaffs2; - - /* The removeObjectCallback function must be supplied by OS flavours that + + /* 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 */ void (*removeObjectCallback)(struct yaffs_ObjectStruct *obj); - + /* Callback to mark the superblock dirsty */ - void (*markSuperBlockDirty)(void * superblock); - + void (*markSuperBlockDirty)(void *superblock); + int wideTnodesDisabled; /* Set to disable wide tnodes */ - + + YCHAR *pathDividers; /* String of legal path dividers */ + /* End of stuff that must be set before initialisation. */ + /* Checkpoint control. Can be set before or after initialisation */ + __u8 skipCheckpointRead; + __u8 skipCheckpointWrite; + /* Runtime parameters. Set up by YAFFS. */ __u16 chunkGroupBits; /* 0 for devices <= 32MB. else log2(nchunks) - 16 */ __u16 chunkGroupSize; /* == 2^^chunkGroupBits */ - + /* Stuff to support wide tnodes */ __u32 tnodeWidth; __u32 tnodeMask; - + + /* Stuff for figuring out file offset to chunk conversions */ + __u32 chunkShift; /* Shift value */ + __u32 chunkDiv; /* Divisor after shifting: 1 for power-of-2 sizes */ + __u32 chunkMask; /* Mask to use for power-of-2 case */ + + /* Stuff to handle inband tags */ + int inbandTags; + __u32 totalBytesPerChunk; #ifdef __KERNEL__ struct semaphore sem; /* Semaphore for waiting on erasure.*/ struct semaphore grossLock; /* Gross locking semaphore */ - __u8 *spareBuffer; /* For mtdif2 use. Don't know the size of the buffer + __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); + void (*putSuperFunc) (struct super_block *sb); #endif int isMounted; - + int isCheckpointed; + /* Stuff to support block offsetting to support start block zero */ int internalStartBlock; int internalEndBlock; int blockOffset; int chunkOffset; - + /* Runtime checkpointing stuff */ int checkpointPageSequence; /* running sequence number of checkpoint pages */ @@ -640,13 +667,17 @@ struct yaffs_DeviceStruct { int checkpointNextBlock; int *checkpointBlockList; int checkpointMaxBlocks; - + __u32 checkpointSum; + __u32 checkpointXor; + + int nCheckpointBlocksRequired; /* 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. + int chunkBitmapStride; /* Number of bytes of chunkBits per block. * Must be consistent with nChunksPerBlock. */ @@ -662,11 +693,15 @@ struct yaffs_DeviceStruct { yaffs_TnodeList *allocatedTnodeList; int isDoingGC; + int gcBlock; + int gcChunk; int nObjectsCreated; yaffs_Object *freeObjects; int nFreeObjects; + int nHardLinks; + yaffs_ObjectList *allocatedObjectList; yaffs_ObjectBucket objectBucket[YAFFS_NOBJECT_BUCKETS]; @@ -676,6 +711,7 @@ struct yaffs_DeviceStruct { int currentDirtyChecker; /* Used to find current dirtiest block */ __u32 *gcCleanupList; /* objects to delete at the end of a GC. */ + int nonAggressiveSkip; /* GC state/mode */ /* Statistcs */ int nPageWrites; @@ -694,6 +730,8 @@ struct yaffs_DeviceStruct { int nDeletions; int nUnmarkedDeletions; + int hasPendingPrioritisedGCs; /* We think this device might have pending prioritised gcs */ + /* Special directories */ yaffs_Object *rootDir; yaffs_Object *lostNFoundDir; @@ -702,7 +740,7 @@ struct yaffs_DeviceStruct { * __u8 bufferedData[YAFFS_CHUNKS_PER_BLOCK][YAFFS_BYTES_PER_CHUNK]; * yaffs_Spare bufferedSpare[YAFFS_CHUNKS_PER_BLOCK]; */ - + int bufferedBlock; /* Which block is buffered here? */ int doingBufferedBlockRewrite; @@ -720,8 +758,10 @@ struct yaffs_DeviceStruct { int nBackgroundDeletions; /* Count of background deletions. */ + /* Temporary buffer management */ yaffs_TempBuffer tempBuffer[YAFFS_N_TEMP_BUFFERS]; int maxTemp; + int tempInUse; int unmanagedTempAllocations; int unmanagedTempDeallocations; @@ -733,9 +773,9 @@ struct yaffs_DeviceStruct { typedef struct yaffs_DeviceStruct yaffs_Device; -/* The static layout of bllock usage etc is stored in the super block header */ +/* The static layout of block usage etc is stored in the super block header */ typedef struct { - int StructType; + int StructType; int version; int checkpointStartBlock; int checkpointEndBlock; @@ -743,12 +783,12 @@ typedef struct { int endBlock; int rfu[100]; } yaffs_SuperBlockHeader; - + /* The CheckpointDevice structure holds the device information that changes at runtime and * must be preserved over unmount/mount cycles. */ typedef struct { - int structType; + int structType; int nErasedBlocks; int allocationBlock; /* Current block being allocated off */ __u32 allocationPage; @@ -766,57 +806,46 @@ typedef struct { typedef struct { - int structType; - __u32 magic; - __u32 version; - __u32 head; + int structType; + __u32 magic; + __u32 version; + __u32 head; } yaffs_CheckpointValidity; -/* Function to manipulate block info */ -static Y_INLINE yaffs_BlockInfo *yaffs_GetBlockInfo(yaffs_Device * dev, int blk) -{ - if (blk < dev->internalStartBlock || blk > dev->internalEndBlock) { - T(YAFFS_TRACE_ERROR, - (TSTR - ("**>> yaffs: getBlockInfo block %d is not valid" TENDSTR), - blk)); - YBUG(); - } - return &dev->blockInfo[blk - dev->internalStartBlock]; -} /*----------------------- YAFFS Functions -----------------------*/ -int yaffs_GutsInitialise(yaffs_Device * dev); -void yaffs_Deinitialise(yaffs_Device * dev); +int yaffs_GutsInitialise(yaffs_Device *dev); +void yaffs_Deinitialise(yaffs_Device *dev); -int yaffs_GetNumberOfFreeChunks(yaffs_Device * dev); +int yaffs_GetNumberOfFreeChunks(yaffs_Device *dev); -int yaffs_RenameObject(yaffs_Object * oldDir, const YCHAR * oldName, - yaffs_Object * newDir, const YCHAR * newName); +int yaffs_RenameObject(yaffs_Object *oldDir, const YCHAR *oldName, + yaffs_Object *newDir, const YCHAR *newName); -int yaffs_Unlink(yaffs_Object * dir, const YCHAR * name); -int yaffs_DeleteFile(yaffs_Object * obj); +int yaffs_Unlink(yaffs_Object *dir, const YCHAR *name); +int yaffs_DeleteObject(yaffs_Object *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_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_SetAttributes(yaffs_Object * obj, struct iattr *attr); -int yaffs_GetAttributes(yaffs_Object * obj, struct iattr *attr); +int yaffs_SetAttributes(yaffs_Object *obj, struct iattr *attr); +int yaffs_GetAttributes(yaffs_Object *obj, struct iattr *attr); /* File operations */ -int yaffs_ReadDataFromFile(yaffs_Object * obj, __u8 * buffer, __u32 offset, - int nBytes); -int yaffs_WriteDataToFile(yaffs_Object * obj, const __u8 * buffer, __u32 offset, - int nBytes, int writeThrough); -int yaffs_ResizeFile(yaffs_Object * obj, int newSize); +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); + +yaffs_Object *yaffs_MknodFile(yaffs_Object *parent, const YCHAR *name, + __u32 mode, __u32 uid, __u32 gid); -yaffs_Object *yaffs_MknodFile(yaffs_Object * parent, const YCHAR * name, - __u32 mode, __u32 uid, __u32 gid); -int yaffs_FlushFile(yaffs_Object * obj, int updateTime); +int yaffs_FlushFile(yaffs_Object *obj, int updateTime, int dataSync); /* Flushing and checkpointing */ void yaffs_FlushEntireDeviceCache(yaffs_Device *dev); @@ -825,33 +854,33 @@ int yaffs_CheckpointSave(yaffs_Device *dev); int yaffs_CheckpointRestore(yaffs_Device *dev); /* Directory operations */ -yaffs_Object *yaffs_MknodDirectory(yaffs_Object * 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, +yaffs_Object *yaffs_MknodDirectory(yaffs_Object *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_Object *yaffs_FindObjectByNumber(yaffs_Device * dev, __u32 number); +yaffs_Object *yaffs_FindObjectByNumber(yaffs_Device *dev, __u32 number); /* Link operations */ -yaffs_Object *yaffs_Link(yaffs_Object * parent, const YCHAR * name, - yaffs_Object * equivalentObject); +yaffs_Object *yaffs_Link(yaffs_Object *parent, const YCHAR *name, + yaffs_Object *equivalentObject); -yaffs_Object *yaffs_GetEquivalentObject(yaffs_Object * obj); +yaffs_Object *yaffs_GetEquivalentObject(yaffs_Object *obj); /* Symlink operations */ -yaffs_Object *yaffs_MknodSymLink(yaffs_Object * parent, const YCHAR * name, +yaffs_Object *yaffs_MknodSymLink(yaffs_Object *parent, const YCHAR *name, __u32 mode, __u32 uid, __u32 gid, - const YCHAR * alias); -YCHAR *yaffs_GetSymlinkAlias(yaffs_Object * obj); + const YCHAR *alias); +YCHAR *yaffs_GetSymlinkAlias(yaffs_Object *obj); /* Special inodes (fifos, sockets and devices) */ -yaffs_Object *yaffs_MknodSpecial(yaffs_Object * parent, const YCHAR * name, +yaffs_Object *yaffs_MknodSpecial(yaffs_Object *parent, const YCHAR *name, __u32 mode, __u32 uid, __u32 gid, __u32 rdev); /* Special directories */ -yaffs_Object *yaffs_Root(yaffs_Device * dev); -yaffs_Object *yaffs_LostNFound(yaffs_Device * dev); +yaffs_Object *yaffs_Root(yaffs_Device *dev); +yaffs_Object *yaffs_LostNFound(yaffs_Device *dev); #ifdef CONFIG_YAFFS_WINCE /* CONFIG_YAFFS_WINCE special stuff */ @@ -860,17 +889,21 @@ void yfsd_WinFileTimeNow(__u32 target[2]); #ifdef __KERNEL__ -void yaffs_HandleDeferedFree(yaffs_Object * obj); +void yaffs_HandleDeferedFree(yaffs_Object *obj); #endif /* Debug dump */ -int yaffs_DumpObject(yaffs_Object * obj); +int yaffs_DumpObject(yaffs_Object *obj); -void yaffs_GutsTest(yaffs_Device * dev); +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_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); #endif