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generic: fold yaffs_cvs_2009_04_24 patch to generic/files
Signed-off-by: Gabor Juhos <juhosg@openwrt.org> git-svn-id: svn://svn.openwrt.org/openwrt/trunk@34012 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
juhosg
@@ -90,7 +90,7 @@
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#define YAFFS_MAX_SHORT_OP_CACHES 20
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#define YAFFS_N_TEMP_BUFFERS 4
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#define YAFFS_N_TEMP_BUFFERS 6
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/* We limit the number attempts at sucessfully saving a chunk of data.
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* Small-page devices have 32 pages per block; large-page devices have 64.
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@@ -108,6 +108,9 @@
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#define YAFFS_LOWEST_SEQUENCE_NUMBER 0x00001000
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#define YAFFS_HIGHEST_SEQUENCE_NUMBER 0xEFFFFF00
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/* Special sequence number for bad block that failed to be marked bad */
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#define YAFFS_SEQUENCE_BAD_BLOCK 0xFFFF0000
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/* ChunkCache is used for short read/write operations.*/
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typedef struct {
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struct yaffs_ObjectStruct *object;
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@@ -134,11 +137,10 @@ typedef struct {
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typedef struct {
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unsigned chunkId:20;
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unsigned serialNumber:2;
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unsigned byteCount:10;
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unsigned byteCountLSB:10;
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unsigned objectId:18;
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unsigned ecc:12;
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unsigned unusedStuff:2;
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unsigned byteCountMSB:2;
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} yaffs_Tags;
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typedef union {
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@@ -277,13 +279,13 @@ typedef struct {
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int softDeletions:10; /* number of soft deleted pages */
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int pagesInUse:10; /* number of pages in use */
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yaffs_BlockState blockState:4; /* One of the above block states */
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unsigned blockState:4; /* One of the above block states. NB use unsigned because enum is sometimes an int */
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__u32 needsRetiring:1; /* Data has failed on this block, need to get valid data off */
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/* and retire the block. */
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__u32 skipErasedCheck: 1; /* If this is set we can skip the erased check on this block */
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__u32 gcPrioritise: 1; /* An ECC check or blank check has failed on this block.
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/* and retire the block. */
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__u32 skipErasedCheck:1; /* If this is set we can skip the erased check on this block */
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__u32 gcPrioritise:1; /* An ECC check or blank check has failed on this block.
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It should be prioritised for GC */
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__u32 chunkErrorStrikes:3; /* How many times we've had ecc etc failures on this block and tried to reuse it */
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__u32 chunkErrorStrikes:3; /* How many times we've had ecc etc failures on this block and tried to reuse it */
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#ifdef CONFIG_YAFFS_YAFFS2
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__u32 hasShrinkHeader:1; /* This block has at least one shrink object header */
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@@ -300,11 +302,11 @@ typedef struct {
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/* Apply to everything */
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int parentObjectId;
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__u16 sum__NoLongerUsed; /* checksum of name. No longer used */
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__u16 sum__NoLongerUsed; /* checksum of name. No longer used */
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YCHAR name[YAFFS_MAX_NAME_LENGTH + 1];
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/* Thes following apply to directories, files, symlinks - not hard links */
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__u32 yst_mode; /* protection */
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/* The following apply to directories, files, symlinks - not hard links */
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__u32 yst_mode; /* protection */
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#ifdef CONFIG_YAFFS_WINCE
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__u32 notForWinCE[5];
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@@ -331,11 +333,14 @@ typedef struct {
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__u32 win_ctime[2];
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__u32 win_atime[2];
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__u32 win_mtime[2];
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__u32 roomToGrow[4];
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#else
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__u32 roomToGrow[10];
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#endif
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__u32 roomToGrow[6];
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#endif
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__u32 inbandShadowsObject;
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__u32 inbandIsShrink;
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__u32 reservedSpace[2];
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int shadowsObject; /* This object header shadows the specified object if > 0 */
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/* isShrink applies to object headers written when we shrink the file (ie resize) */
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@@ -381,7 +386,7 @@ typedef struct {
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} yaffs_FileStructure;
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typedef struct {
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struct list_head children; /* list of child links */
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struct ylist_head children; /* list of child links */
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} yaffs_DirectoryStructure;
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typedef struct {
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@@ -418,23 +423,24 @@ struct yaffs_ObjectStruct {
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* still in the inode cache. Free of object is defered.
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* until the inode is released.
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*/
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__u8 beingCreated:1; /* This object is still being created so skip some checks. */
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__u8 serial; /* serial number of chunk in NAND. Cached here */
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__u16 sum; /* sum of the name to speed searching */
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struct yaffs_DeviceStruct *myDev; /* The device I'm on */
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struct yaffs_DeviceStruct *myDev; /* The device I'm on */
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struct list_head hashLink; /* list of objects in this hash bucket */
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struct ylist_head hashLink; /* list of objects in this hash bucket */
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struct list_head hardLinks; /* all the equivalent hard linked objects */
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struct ylist_head hardLinks; /* all the equivalent hard linked objects */
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/* directory structure stuff */
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/* also used for linking up the free list */
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struct yaffs_ObjectStruct *parent;
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struct list_head siblings;
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struct ylist_head siblings;
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/* Where's my object header in NAND? */
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int chunkId;
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int hdrChunk;
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int nDataChunks; /* Number of data chunks attached to the file. */
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@@ -485,7 +491,7 @@ struct yaffs_ObjectList_struct {
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typedef struct yaffs_ObjectList_struct yaffs_ObjectList;
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typedef struct {
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struct list_head list;
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struct ylist_head list;
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int count;
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} yaffs_ObjectBucket;
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@@ -495,11 +501,10 @@ typedef struct {
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*/
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typedef struct {
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int structType;
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int structType;
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__u32 objectId;
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__u32 parentId;
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int chunkId;
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int hdrChunk;
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yaffs_ObjectType variantType:3;
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__u8 deleted:1;
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__u8 softDeleted:1;
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@@ -511,8 +516,7 @@ typedef struct {
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int nDataChunks;
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__u32 fileSizeOrEquivalentObjectId;
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}yaffs_CheckpointObject;
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} yaffs_CheckpointObject;
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/*--------------------- Temporary buffers ----------------
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*
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@@ -528,13 +532,13 @@ typedef struct {
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/*----------------- Device ---------------------------------*/
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struct yaffs_DeviceStruct {
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struct list_head devList;
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struct ylist_head devList;
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const char *name;
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/* Entry parameters set up way early. Yaffs sets up the rest.*/
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int nDataBytesPerChunk; /* Should be a power of 2 >= 512 */
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int nChunksPerBlock; /* does not need to be a power of 2 */
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int nBytesPerSpare; /* spare area size */
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int spareBytesPerChunk; /* spare area size */
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int startBlock; /* Start block we're allowed to use */
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int endBlock; /* End block we're allowed to use */
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int nReservedBlocks; /* We want this tuneable so that we can reduce */
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@@ -544,9 +548,7 @@ struct yaffs_DeviceStruct {
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/* Stuff used by the shared space checkpointing mechanism */
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/* If this value is zero, then this mechanism is disabled */
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int nCheckpointReservedBlocks; /* Blocks to reserve for checkpoint data */
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/* int nCheckpointReservedBlocks; */ /* Blocks to reserve for checkpoint data */
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int nShortOpCaches; /* If <= 0, then short op caching is disabled, else
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@@ -560,30 +562,31 @@ struct yaffs_DeviceStruct {
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void *genericDevice; /* Pointer to device context
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* On an mtd this holds the mtd pointer.
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*/
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void *superBlock;
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void *superBlock;
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/* NAND access functions (Must be set before calling YAFFS)*/
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int (*writeChunkToNAND) (struct yaffs_DeviceStruct * dev,
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int chunkInNAND, const __u8 * data,
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const yaffs_Spare * spare);
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int (*readChunkFromNAND) (struct yaffs_DeviceStruct * dev,
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int chunkInNAND, __u8 * data,
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yaffs_Spare * spare);
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int (*eraseBlockInNAND) (struct yaffs_DeviceStruct * dev,
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int blockInNAND);
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int (*initialiseNAND) (struct yaffs_DeviceStruct * dev);
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int (*writeChunkToNAND) (struct yaffs_DeviceStruct *dev,
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int chunkInNAND, const __u8 *data,
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const yaffs_Spare *spare);
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int (*readChunkFromNAND) (struct yaffs_DeviceStruct *dev,
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int chunkInNAND, __u8 *data,
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yaffs_Spare *spare);
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int (*eraseBlockInNAND) (struct yaffs_DeviceStruct *dev,
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int blockInNAND);
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int (*initialiseNAND) (struct yaffs_DeviceStruct *dev);
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int (*deinitialiseNAND) (struct yaffs_DeviceStruct *dev);
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#ifdef CONFIG_YAFFS_YAFFS2
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int (*writeChunkWithTagsToNAND) (struct yaffs_DeviceStruct * dev,
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int chunkInNAND, const __u8 * data,
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const yaffs_ExtendedTags * tags);
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int (*readChunkWithTagsFromNAND) (struct yaffs_DeviceStruct * dev,
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int chunkInNAND, __u8 * data,
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yaffs_ExtendedTags * tags);
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int (*markNANDBlockBad) (struct yaffs_DeviceStruct * dev, int blockNo);
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int (*queryNANDBlock) (struct yaffs_DeviceStruct * dev, int blockNo,
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yaffs_BlockState * state, int *sequenceNumber);
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int (*writeChunkWithTagsToNAND) (struct yaffs_DeviceStruct *dev,
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int chunkInNAND, const __u8 *data,
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const yaffs_ExtendedTags *tags);
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int (*readChunkWithTagsFromNAND) (struct yaffs_DeviceStruct *dev,
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int chunkInNAND, __u8 *data,
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yaffs_ExtendedTags *tags);
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int (*markNANDBlockBad) (struct yaffs_DeviceStruct *dev, int blockNo);
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int (*queryNANDBlock) (struct yaffs_DeviceStruct *dev, int blockNo,
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yaffs_BlockState *state, __u32 *sequenceNumber);
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#endif
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int isYaffs2;
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@@ -595,10 +598,12 @@ struct yaffs_DeviceStruct {
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void (*removeObjectCallback)(struct yaffs_ObjectStruct *obj);
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/* Callback to mark the superblock dirsty */
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void (*markSuperBlockDirty)(void * superblock);
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void (*markSuperBlockDirty)(void *superblock);
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int wideTnodesDisabled; /* Set to disable wide tnodes */
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YCHAR *pathDividers; /* String of legal path dividers */
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/* End of stuff that must be set before initialisation. */
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@@ -615,16 +620,14 @@ struct yaffs_DeviceStruct {
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__u32 tnodeWidth;
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__u32 tnodeMask;
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/* Stuff to support various file offses to chunk/offset translations */
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/* "Crumbs" for nDataBytesPerChunk not being a power of 2 */
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__u32 crumbMask;
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__u32 crumbShift;
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__u32 crumbsPerChunk;
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/* Straight shifting for nDataBytesPerChunk being a power of 2 */
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__u32 chunkShift;
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__u32 chunkMask;
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/* Stuff for figuring out file offset to chunk conversions */
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__u32 chunkShift; /* Shift value */
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__u32 chunkDiv; /* Divisor after shifting: 1 for power-of-2 sizes */
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__u32 chunkMask; /* Mask to use for power-of-2 case */
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/* Stuff to handle inband tags */
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int inbandTags;
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__u32 totalBytesPerChunk;
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#ifdef __KERNEL__
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@@ -633,7 +636,7 @@ struct yaffs_DeviceStruct {
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__u8 *spareBuffer; /* For mtdif2 use. Don't know the size of the buffer
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* at compile time so we have to allocate it.
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*/
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void (*putSuperFunc) (struct super_block * sb);
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void (*putSuperFunc) (struct super_block *sb);
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#endif
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int isMounted;
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@@ -663,6 +666,8 @@ struct yaffs_DeviceStruct {
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__u32 checkpointSum;
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__u32 checkpointXor;
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int nCheckpointBlocksRequired; /* Number of blocks needed to store current checkpoint set */
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/* Block Info */
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yaffs_BlockInfo *blockInfo;
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__u8 *chunkBits; /* bitmap of chunks in use */
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@@ -684,11 +689,15 @@ struct yaffs_DeviceStruct {
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yaffs_TnodeList *allocatedTnodeList;
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int isDoingGC;
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int gcBlock;
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int gcChunk;
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int nObjectsCreated;
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yaffs_Object *freeObjects;
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int nFreeObjects;
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int nHardLinks;
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yaffs_ObjectList *allocatedObjectList;
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yaffs_ObjectBucket objectBucket[YAFFS_NOBJECT_BUCKETS];
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@@ -745,8 +754,10 @@ struct yaffs_DeviceStruct {
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int nBackgroundDeletions; /* Count of background deletions. */
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/* Temporary buffer management */
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yaffs_TempBuffer tempBuffer[YAFFS_N_TEMP_BUFFERS];
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int maxTemp;
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int tempInUse;
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int unmanagedTempAllocations;
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int unmanagedTempDeallocations;
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@@ -758,9 +769,9 @@ struct yaffs_DeviceStruct {
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typedef struct yaffs_DeviceStruct yaffs_Device;
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/* The static layout of bllock usage etc is stored in the super block header */
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/* The static layout of block usage etc is stored in the super block header */
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typedef struct {
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int StructType;
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int StructType;
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int version;
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int checkpointStartBlock;
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int checkpointEndBlock;
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@@ -773,7 +784,7 @@ typedef struct {
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* must be preserved over unmount/mount cycles.
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*/
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typedef struct {
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int structType;
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int structType;
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int nErasedBlocks;
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int allocationBlock; /* Current block being allocated off */
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__u32 allocationPage;
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@@ -791,57 +802,45 @@ typedef struct {
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typedef struct {
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int structType;
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__u32 magic;
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__u32 version;
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__u32 head;
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int structType;
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__u32 magic;
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__u32 version;
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__u32 head;
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} yaffs_CheckpointValidity;
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/* Function to manipulate block info */
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static Y_INLINE yaffs_BlockInfo *yaffs_GetBlockInfo(yaffs_Device * dev, int blk)
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{
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if (blk < dev->internalStartBlock || blk > dev->internalEndBlock) {
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T(YAFFS_TRACE_ERROR,
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(TSTR
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("**>> yaffs: getBlockInfo block %d is not valid" TENDSTR),
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blk));
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YBUG();
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}
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return &dev->blockInfo[blk - dev->internalStartBlock];
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}
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/*----------------------- YAFFS Functions -----------------------*/
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int yaffs_GutsInitialise(yaffs_Device * dev);
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void yaffs_Deinitialise(yaffs_Device * dev);
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int yaffs_GutsInitialise(yaffs_Device *dev);
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void yaffs_Deinitialise(yaffs_Device *dev);
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int yaffs_GetNumberOfFreeChunks(yaffs_Device * dev);
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int yaffs_GetNumberOfFreeChunks(yaffs_Device *dev);
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int yaffs_RenameObject(yaffs_Object * oldDir, const YCHAR * oldName,
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yaffs_Object * newDir, const YCHAR * newName);
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int yaffs_RenameObject(yaffs_Object *oldDir, const YCHAR *oldName,
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yaffs_Object *newDir, const YCHAR *newName);
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int yaffs_Unlink(yaffs_Object * dir, const YCHAR * name);
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int yaffs_DeleteFile(yaffs_Object * obj);
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int yaffs_Unlink(yaffs_Object *dir, const YCHAR *name);
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int yaffs_DeleteObject(yaffs_Object *obj);
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int yaffs_GetObjectName(yaffs_Object * obj, YCHAR * name, int buffSize);
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int yaffs_GetObjectFileLength(yaffs_Object * obj);
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int yaffs_GetObjectInode(yaffs_Object * obj);
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unsigned yaffs_GetObjectType(yaffs_Object * obj);
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int yaffs_GetObjectLinkCount(yaffs_Object * obj);
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int yaffs_GetObjectName(yaffs_Object *obj, YCHAR *name, int buffSize);
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int yaffs_GetObjectFileLength(yaffs_Object *obj);
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int yaffs_GetObjectInode(yaffs_Object *obj);
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unsigned yaffs_GetObjectType(yaffs_Object *obj);
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int yaffs_GetObjectLinkCount(yaffs_Object *obj);
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int yaffs_SetAttributes(yaffs_Object * obj, struct iattr *attr);
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int yaffs_GetAttributes(yaffs_Object * obj, struct iattr *attr);
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int yaffs_SetAttributes(yaffs_Object *obj, struct iattr *attr);
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int yaffs_GetAttributes(yaffs_Object *obj, struct iattr *attr);
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/* File operations */
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int yaffs_ReadDataFromFile(yaffs_Object * obj, __u8 * buffer, loff_t offset,
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int nBytes);
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int yaffs_WriteDataToFile(yaffs_Object * obj, const __u8 * buffer, loff_t offset,
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int nBytes, int writeThrough);
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int yaffs_ResizeFile(yaffs_Object * obj, loff_t newSize);
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int yaffs_ReadDataFromFile(yaffs_Object *obj, __u8 *buffer, loff_t offset,
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int nBytes);
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int yaffs_WriteDataToFile(yaffs_Object *obj, const __u8 *buffer, loff_t offset,
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int nBytes, int writeThrough);
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int yaffs_ResizeFile(yaffs_Object *obj, loff_t newSize);
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yaffs_Object *yaffs_MknodFile(yaffs_Object * parent, const YCHAR * name,
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__u32 mode, __u32 uid, __u32 gid);
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int yaffs_FlushFile(yaffs_Object * obj, int updateTime);
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yaffs_Object *yaffs_MknodFile(yaffs_Object *parent, const YCHAR *name,
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__u32 mode, __u32 uid, __u32 gid);
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int yaffs_FlushFile(yaffs_Object *obj, int updateTime);
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/* Flushing and checkpointing */
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void yaffs_FlushEntireDeviceCache(yaffs_Device *dev);
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@@ -850,33 +849,33 @@ int yaffs_CheckpointSave(yaffs_Device *dev);
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int yaffs_CheckpointRestore(yaffs_Device *dev);
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/* Directory operations */
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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 */
|
||||
@@ -885,18 +884,21 @@ 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
|
||||
|
||||
Reference in New Issue
Block a user