/*
- * YAFFS: Yet another FFS. A NAND-flash specific file system.
+ * 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 <charles@aleph1.co.uk>
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
- *
*/
const char *yaffs_guts_c_version =
- "$Id: yaffs_guts.c,v 1.43 2006-11-08 09:52:12 charles Exp $";
+ "$Id: yaffs_guts.c,v 1.111 2010-03-02 02:29:21 charles Exp $";
#include "yportenv.h"
+#include "yaffs_trace.h"
#include "yaffsinterface.h"
#include "yaffs_guts.h"
#include "yaffs_tagsvalidity.h"
+#include "yaffs_getblockinfo.h"
#include "yaffs_tagscompat.h"
-#ifndef CONFIG_YAFFS_OWN_SORT
+#ifndef CONFIG_YAFFS_USE_OWN_SORT
#include "yaffs_qsort.h"
#endif
#include "yaffs_nand.h"
#include "yaffs_packedtags2.h"
-#ifdef CONFIG_YAFFS_WINCE
-void yfsd_LockYAFFS(BOOL fsLockOnly);
-void yfsd_UnlockYAFFS(BOOL fsLockOnly);
-#endif
-
#define YAFFS_PASSIVE_GC_CHUNKS 2
#include "yaffs_ecc.h"
/* Robustification (if it ever comes about...) */
-static void yaffs_RetireBlock(yaffs_Device * dev, int blockInNAND);
-static void yaffs_HandleWriteChunkError(yaffs_Device * dev, int chunkInNAND, int erasedOk);
-static void yaffs_HandleWriteChunkOk(yaffs_Device * dev, int chunkInNAND,
- const __u8 * data,
- const yaffs_ExtendedTags * tags);
-static void yaffs_HandleUpdateChunk(yaffs_Device * dev, int chunkInNAND,
- const yaffs_ExtendedTags * tags);
+static void yaffs_RetireBlock(yaffs_Device *dev, int blockInNAND);
+static void yaffs_HandleWriteChunkError(yaffs_Device *dev, int chunkInNAND,
+ int erasedOk);
+static void yaffs_HandleWriteChunkOk(yaffs_Device *dev, int chunkInNAND,
+ const __u8 *data,
+ const yaffs_ExtendedTags *tags);
+static void yaffs_HandleUpdateChunk(yaffs_Device *dev, int chunkInNAND,
+ const yaffs_ExtendedTags *tags);
/* Other local prototypes */
-static int yaffs_UnlinkObject( yaffs_Object *obj);
+static void yaffs_UpdateParent(yaffs_Object *obj);
+static int yaffs_UnlinkObject(yaffs_Object *obj);
static int yaffs_ObjectHasCachedWriteData(yaffs_Object *obj);
static void yaffs_HardlinkFixup(yaffs_Device *dev, yaffs_Object *hardList);
-static int yaffs_WriteNewChunkWithTagsToNAND(yaffs_Device * dev,
- const __u8 * buffer,
- yaffs_ExtendedTags * tags,
- int useReserve);
-static int yaffs_PutChunkIntoFile(yaffs_Object * in, int chunkInInode,
- int chunkInNAND, int inScan);
-
-static yaffs_Object *yaffs_CreateNewObject(yaffs_Device * dev, int number,
- yaffs_ObjectType type);
-static void yaffs_AddObjectToDirectory(yaffs_Object * directory,
- yaffs_Object * obj);
-static int yaffs_UpdateObjectHeader(yaffs_Object * in, const YCHAR * name,
- int force, int isShrink, int shadows);
-static void yaffs_RemoveObjectFromDirectory(yaffs_Object * obj);
+static int yaffs_WriteNewChunkWithTagsToNAND(yaffs_Device *dev,
+ const __u8 *buffer,
+ yaffs_ExtendedTags *tags,
+ int useReserve);
+static int yaffs_PutChunkIntoFile(yaffs_Object *in, int chunkInInode,
+ int chunkInNAND, int inScan);
+
+static yaffs_Object *yaffs_CreateNewObject(yaffs_Device *dev, int number,
+ yaffs_ObjectType type);
+static void yaffs_AddObjectToDirectory(yaffs_Object *directory,
+ yaffs_Object *obj);
+static int yaffs_UpdateObjectHeader(yaffs_Object *in, const YCHAR *name,
+ int force, int isShrink, int shadows);
+static void yaffs_RemoveObjectFromDirectory(yaffs_Object *obj);
static int yaffs_CheckStructures(void);
-static int yaffs_DeleteWorker(yaffs_Object * in, yaffs_Tnode * tn, __u32 level,
- int chunkOffset, int *limit);
-static int yaffs_DoGenericObjectDeletion(yaffs_Object * in);
+static int yaffs_DeleteWorker(yaffs_Object *in, yaffs_Tnode *tn, __u32 level,
+ int chunkOffset, int *limit);
+static int yaffs_DoGenericObjectDeletion(yaffs_Object *in);
-static yaffs_BlockInfo *yaffs_GetBlockInfo(yaffs_Device * dev, int blockNo);
+static yaffs_BlockInfo *yaffs_GetBlockInfo(yaffs_Device *dev, int blockNo);
-static __u8 *yaffs_GetTempBuffer(yaffs_Device * dev, int lineNo);
-static void yaffs_ReleaseTempBuffer(yaffs_Device * dev, __u8 * buffer,
- int lineNo);
static int yaffs_CheckChunkErased(struct yaffs_DeviceStruct *dev,
- int chunkInNAND);
+ int chunkInNAND);
-static int yaffs_UnlinkWorker(yaffs_Object * obj);
-static void yaffs_DestroyObject(yaffs_Object * obj);
+static int yaffs_UnlinkWorker(yaffs_Object *obj);
-static int yaffs_TagsMatch(const yaffs_ExtendedTags * tags, int objectId,
- int chunkInObject);
+static int yaffs_TagsMatch(const yaffs_ExtendedTags *tags, int objectId,
+ int chunkInObject);
-loff_t yaffs_GetFileSize(yaffs_Object * obj);
+static int yaffs_AllocateChunk(yaffs_Device *dev, int useReserve,
+ yaffs_BlockInfo **blockUsedPtr);
-static int yaffs_AllocateChunk(yaffs_Device * dev, int useReserve, yaffs_BlockInfo **blockUsedPtr);
+static void yaffs_VerifyFreeChunks(yaffs_Device *dev);
-static void yaffs_VerifyFreeChunks(yaffs_Device * dev);
+static void yaffs_CheckObjectDetailsLoaded(yaffs_Object *in);
+static void yaffs_VerifyDirectory(yaffs_Object *directory);
#ifdef YAFFS_PARANOID
-static int yaffs_CheckFileSanity(yaffs_Object * in);
+static int yaffs_CheckFileSanity(yaffs_Object *in);
#else
#define yaffs_CheckFileSanity(in)
#endif
-static void yaffs_InvalidateWholeChunkCache(yaffs_Object * in);
-static void yaffs_InvalidateChunkCache(yaffs_Object * object, int chunkId);
+static void yaffs_InvalidateWholeChunkCache(yaffs_Object *in);
+static void yaffs_InvalidateChunkCache(yaffs_Object *object, int chunkId);
static void yaffs_InvalidateCheckpoint(yaffs_Device *dev);
+static int yaffs_FindChunkInFile(yaffs_Object *in, int chunkInInode,
+ yaffs_ExtendedTags *tags);
+static __u32 yaffs_GetChunkGroupBase(yaffs_Device *dev, yaffs_Tnode *tn,
+ unsigned pos);
+static yaffs_Tnode *yaffs_FindLevel0Tnode(yaffs_Device *dev,
+ yaffs_FileStructure *fStruct,
+ __u32 chunkId);
+
+static void yaffs_SkipRestOfBlock(yaffs_Device *dev);
+static int yaffs_VerifyChunkWritten(yaffs_Device *dev,
+ int chunkInNAND,
+ const __u8 *data,
+ yaffs_ExtendedTags *tags);
/* Function to calculate chunk and offset */
-static void yaffs_AddrToChunk(yaffs_Device *dev, loff_t addr, __u32 *chunk, __u32 *offset)
+static void yaffs_AddrToChunk(yaffs_Device *dev, loff_t addr, int *chunkOut,
+ __u32 *offsetOut)
{
- if(dev->chunkShift){
- /* Easy-peasy power of 2 case */
- *chunk = (__u32)(addr >> dev->chunkShift);
- *offset = (__u32)(addr & dev->chunkMask);
- }
- else if(dev->crumbsPerChunk)
- {
- /* Case where we're using "crumbs" */
- *offset = (__u32)(addr & dev->crumbMask);
- addr >>= dev->crumbShift;
- *chunk = ((__u32)addr)/dev->crumbsPerChunk;
- *offset += ((addr - (*chunk * dev->crumbsPerChunk)) << dev->crumbShift);
+ int chunk;
+ __u32 offset;
+
+ chunk = (__u32)(addr >> dev->chunkShift);
+
+ if (dev->chunkDiv == 1) {
+ /* easy power of 2 case */
+ offset = (__u32)(addr & dev->chunkMask);
+ } else {
+ /* Non power-of-2 case */
+
+ loff_t chunkBase;
+
+ chunk /= dev->chunkDiv;
+
+ chunkBase = ((loff_t)chunk) * dev->nDataBytesPerChunk;
+ offset = (__u32)(addr - chunkBase);
}
- else
- YBUG();
+
+ *chunkOut = chunk;
+ *offsetOut = offset;
}
-/* Function to return the number of shifts for a power of 2 greater than or equal
- * to the given number
+/* Function to return the number of shifts for a power of 2 greater than or
+ * equal to the given number
* Note we don't try to cater for all possible numbers and this does not have to
* be hellishly efficient.
*/
-
+
static __u32 ShiftsGE(__u32 x)
{
int extraBits;
int nShifts;
-
+
nShifts = extraBits = 0;
-
- while(x>1){
- if(x & 1) extraBits++;
- x>>=1;
+
+ while (x > 1) {
+ if (x & 1)
+ extraBits++;
+ x >>= 1;
nShifts++;
}
- if(extraBits)
+ if (extraBits)
nShifts++;
-
+
return nShifts;
}
/* Function to return the number of shifts to get a 1 in bit 0
*/
-
-static __u32 ShiftDiv(__u32 x)
+
+static __u32 Shifts(__u32 x)
{
int nShifts;
-
+
nShifts = 0;
-
- if(!x) return 0;
-
- while( !(x&1)){
- x>>=1;
+
+ if (!x)
+ return 0;
+
+ while (!(x&1)) {
+ x >>= 1;
nShifts++;
}
-
+
return nShifts;
}
-/*
+/*
* Temporary buffer manipulations.
*/
-static __u8 *yaffs_GetTempBuffer(yaffs_Device * dev, int lineNo)
+static int yaffs_InitialiseTempBuffers(yaffs_Device *dev)
+{
+ int i;
+ __u8 *buf = (__u8 *)1;
+
+ memset(dev->tempBuffer, 0, sizeof(dev->tempBuffer));
+
+ for (i = 0; buf && i < YAFFS_N_TEMP_BUFFERS; i++) {
+ dev->tempBuffer[i].line = 0; /* not in use */
+ dev->tempBuffer[i].buffer = buf =
+ YMALLOC_DMA(dev->param.totalBytesPerChunk);
+ }
+
+ return buf ? YAFFS_OK : YAFFS_FAIL;
+}
+
+__u8 *yaffs_GetTempBuffer(yaffs_Device *dev, int lineNo)
{
int i, j;
+
+ dev->tempInUse++;
+ if (dev->tempInUse > dev->maxTemp)
+ dev->maxTemp = dev->tempInUse;
+
for (i = 0; i < YAFFS_N_TEMP_BUFFERS; i++) {
if (dev->tempBuffer[i].line == 0) {
dev->tempBuffer[i].line = lineNo;
T(YAFFS_TRACE_BUFFERS,
(TSTR("Out of temp buffers at line %d, other held by lines:"),
lineNo));
- for (i = 0; i < YAFFS_N_TEMP_BUFFERS; i++) {
+ for (i = 0; i < YAFFS_N_TEMP_BUFFERS; i++)
T(YAFFS_TRACE_BUFFERS, (TSTR(" %d "), dev->tempBuffer[i].line));
- }
+
T(YAFFS_TRACE_BUFFERS, (TSTR(" " TENDSTR)));
/*
}
-static void yaffs_ReleaseTempBuffer(yaffs_Device * dev, __u8 * buffer,
+void yaffs_ReleaseTempBuffer(yaffs_Device *dev, __u8 *buffer,
int lineNo)
{
int i;
+
+ dev->tempInUse--;
+
for (i = 0; i < YAFFS_N_TEMP_BUFFERS; i++) {
if (dev->tempBuffer[i].buffer == buffer) {
dev->tempBuffer[i].line = 0;
/*
* Determine if we have a managed buffer.
*/
-int yaffs_IsManagedTempBuffer(yaffs_Device * dev, const __u8 * buffer)
+int yaffs_IsManagedTempBuffer(yaffs_Device *dev, const __u8 *buffer)
{
int i;
+
for (i = 0; i < YAFFS_N_TEMP_BUFFERS; i++) {
if (dev->tempBuffer[i].buffer == buffer)
return 1;
+ }
+ for (i = 0; i < dev->param.nShortOpCaches; i++) {
+ if (dev->srCache[i].data == buffer)
+ return 1;
}
- for (i = 0; i < dev->nShortOpCaches; i++) {
- if( dev->srCache[i].data == buffer )
- return 1;
+ if (buffer == dev->checkpointBuffer)
+ return 1;
- }
+ T(YAFFS_TRACE_ALWAYS,
+ (TSTR("yaffs: unmaged buffer detected.\n" TENDSTR)));
+ return 0;
+}
- if (buffer == dev->checkpointBuffer)
- return 1;
- T(YAFFS_TRACE_ALWAYS,
- (TSTR("yaffs: unmaged buffer detected.\n" TENDSTR)));
- return 0;
-}
/*
* Chunk bitmap manipulations
*/
-static Y_INLINE __u8 *yaffs_BlockBits(yaffs_Device * dev, int blk)
+static Y_INLINE __u8 *yaffs_BlockBits(yaffs_Device *dev, int blk)
{
if (blk < dev->internalStartBlock || blk > dev->internalEndBlock) {
T(YAFFS_TRACE_ERROR,
- (TSTR("**>> yaffs: BlockBits block %d is not valid" TENDSTR),
- blk));
+ (TSTR("**>> yaffs: BlockBits block %d is not valid" TENDSTR),
+ blk));
YBUG();
}
return dev->chunkBits +
- (dev->chunkBitmapStride * (blk - dev->internalStartBlock));
+ (dev->chunkBitmapStride * (blk - dev->internalStartBlock));
+}
+
+static Y_INLINE void yaffs_VerifyChunkBitId(yaffs_Device *dev, int blk, int chunk)
+{
+ if (blk < dev->internalStartBlock || blk > dev->internalEndBlock ||
+ chunk < 0 || chunk >= dev->param.nChunksPerBlock) {
+ T(YAFFS_TRACE_ERROR,
+ (TSTR("**>> yaffs: Chunk Id (%d:%d) invalid"TENDSTR),
+ blk, chunk));
+ YBUG();
+ }
}
-static Y_INLINE void yaffs_ClearChunkBits(yaffs_Device * dev, int blk)
+static Y_INLINE void yaffs_ClearChunkBits(yaffs_Device *dev, int blk)
{
__u8 *blkBits = yaffs_BlockBits(dev, blk);
memset(blkBits, 0, dev->chunkBitmapStride);
}
-static Y_INLINE void yaffs_ClearChunkBit(yaffs_Device * dev, int blk, int chunk)
+static Y_INLINE void yaffs_ClearChunkBit(yaffs_Device *dev, int blk, int chunk)
{
__u8 *blkBits = yaffs_BlockBits(dev, blk);
+ yaffs_VerifyChunkBitId(dev, blk, chunk);
+
blkBits[chunk / 8] &= ~(1 << (chunk & 7));
}
-static Y_INLINE void yaffs_SetChunkBit(yaffs_Device * dev, int blk, int chunk)
+static Y_INLINE void yaffs_SetChunkBit(yaffs_Device *dev, int blk, int chunk)
{
__u8 *blkBits = yaffs_BlockBits(dev, blk);
+ yaffs_VerifyChunkBitId(dev, blk, chunk);
+
blkBits[chunk / 8] |= (1 << (chunk & 7));
}
-static Y_INLINE int yaffs_CheckChunkBit(yaffs_Device * dev, int blk, int chunk)
+static Y_INLINE int yaffs_CheckChunkBit(yaffs_Device *dev, int blk, int chunk)
{
__u8 *blkBits = yaffs_BlockBits(dev, blk);
+ yaffs_VerifyChunkBitId(dev, blk, chunk);
+
return (blkBits[chunk / 8] & (1 << (chunk & 7))) ? 1 : 0;
}
-static Y_INLINE int yaffs_StillSomeChunkBits(yaffs_Device * dev, int blk)
+static Y_INLINE int yaffs_StillSomeChunkBits(yaffs_Device *dev, int blk)
{
__u8 *blkBits = yaffs_BlockBits(dev, blk);
int i;
return 0;
}
+static int yaffs_CountChunkBits(yaffs_Device *dev, int blk)
+{
+ __u8 *blkBits = yaffs_BlockBits(dev, blk);
+ int i;
+ int n = 0;
+ for (i = 0; i < dev->chunkBitmapStride; i++) {
+ __u8 x = *blkBits;
+ while (x) {
+ if (x & 1)
+ n++;
+ x >>= 1;
+ }
+
+ blkBits++;
+ }
+ return n;
+}
+
+/*
+ * Verification code
+ */
+
+static int yaffs_SkipVerification(yaffs_Device *dev)
+{
+ return !(yaffs_traceMask & (YAFFS_TRACE_VERIFY | YAFFS_TRACE_VERIFY_FULL));
+}
+
+static int yaffs_SkipFullVerification(yaffs_Device *dev)
+{
+ return !(yaffs_traceMask & (YAFFS_TRACE_VERIFY_FULL));
+}
+
+static int yaffs_SkipNANDVerification(yaffs_Device *dev)
+{
+ return !(yaffs_traceMask & (YAFFS_TRACE_VERIFY_NAND));
+}
+
+static const char *blockStateName[] = {
+"Unknown",
+"Needs scanning",
+"Scanning",
+"Empty",
+"Allocating",
+"Full",
+"Dirty",
+"Checkpoint",
+"Collecting",
+"Dead"
+};
+
+static void yaffs_VerifyBlock(yaffs_Device *dev, yaffs_BlockInfo *bi, int n)
+{
+ int actuallyUsed;
+ int inUse;
+
+ if (yaffs_SkipVerification(dev))
+ return;
+
+ /* Report illegal runtime states */
+ if (bi->blockState >= YAFFS_NUMBER_OF_BLOCK_STATES)
+ T(YAFFS_TRACE_VERIFY, (TSTR("Block %d has undefined state %d"TENDSTR), n, bi->blockState));
+
+ switch (bi->blockState) {
+ case YAFFS_BLOCK_STATE_UNKNOWN:
+ case YAFFS_BLOCK_STATE_SCANNING:
+ case YAFFS_BLOCK_STATE_NEEDS_SCANNING:
+ T(YAFFS_TRACE_VERIFY, (TSTR("Block %d has bad run-state %s"TENDSTR),
+ n, blockStateName[bi->blockState]));
+ }
+
+ /* Check pages in use and soft deletions are legal */
+
+ actuallyUsed = bi->pagesInUse - bi->softDeletions;
+
+ if (bi->pagesInUse < 0 || bi->pagesInUse > dev->param.nChunksPerBlock ||
+ bi->softDeletions < 0 || bi->softDeletions > dev->param.nChunksPerBlock ||
+ actuallyUsed < 0 || actuallyUsed > dev->param.nChunksPerBlock)
+ T(YAFFS_TRACE_VERIFY, (TSTR("Block %d has illegal values pagesInUsed %d softDeletions %d"TENDSTR),
+ n, bi->pagesInUse, bi->softDeletions));
+
+
+ /* Check chunk bitmap legal */
+ inUse = yaffs_CountChunkBits(dev, n);
+ if (inUse != bi->pagesInUse)
+ T(YAFFS_TRACE_VERIFY, (TSTR("Block %d has inconsistent values pagesInUse %d counted chunk bits %d"TENDSTR),
+ n, bi->pagesInUse, inUse));
+
+ /* Check that the sequence number is valid.
+ * Ten million is legal, but is very unlikely
+ */
+ if (dev->param.isYaffs2 &&
+ (bi->blockState == YAFFS_BLOCK_STATE_ALLOCATING || bi->blockState == YAFFS_BLOCK_STATE_FULL) &&
+ (bi->sequenceNumber < YAFFS_LOWEST_SEQUENCE_NUMBER || bi->sequenceNumber > 10000000))
+ T(YAFFS_TRACE_VERIFY, (TSTR("Block %d has suspect sequence number of %d"TENDSTR),
+ n, bi->sequenceNumber));
+}
+
+static void yaffs_VerifyCollectedBlock(yaffs_Device *dev, yaffs_BlockInfo *bi,
+ int n)
+{
+ yaffs_VerifyBlock(dev, bi, n);
+
+ /* After collection the block should be in the erased state */
+ /* This will need to change if we do partial gc */
+
+ if (bi->blockState != YAFFS_BLOCK_STATE_COLLECTING &&
+ bi->blockState != YAFFS_BLOCK_STATE_EMPTY) {
+ T(YAFFS_TRACE_ERROR, (TSTR("Block %d is in state %d after gc, should be erased"TENDSTR),
+ n, bi->blockState));
+ }
+}
+
+static void yaffs_VerifyBlocks(yaffs_Device *dev)
+{
+ int i;
+ int nBlocksPerState[YAFFS_NUMBER_OF_BLOCK_STATES];
+ int nIllegalBlockStates = 0;
+
+ if (yaffs_SkipVerification(dev))
+ return;
+
+ memset(nBlocksPerState, 0, sizeof(nBlocksPerState));
+
+ for (i = dev->internalStartBlock; i <= dev->internalEndBlock; i++) {
+ yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, i);
+ yaffs_VerifyBlock(dev, bi, i);
+
+ if (bi->blockState < YAFFS_NUMBER_OF_BLOCK_STATES)
+ nBlocksPerState[bi->blockState]++;
+ else
+ nIllegalBlockStates++;
+ }
+
+ T(YAFFS_TRACE_VERIFY, (TSTR(""TENDSTR)));
+ T(YAFFS_TRACE_VERIFY, (TSTR("Block summary"TENDSTR)));
+
+ T(YAFFS_TRACE_VERIFY, (TSTR("%d blocks have illegal states"TENDSTR), nIllegalBlockStates));
+ if (nBlocksPerState[YAFFS_BLOCK_STATE_ALLOCATING] > 1)
+ T(YAFFS_TRACE_VERIFY, (TSTR("Too many allocating blocks"TENDSTR)));
+
+ for (i = 0; i < YAFFS_NUMBER_OF_BLOCK_STATES; i++)
+ T(YAFFS_TRACE_VERIFY,
+ (TSTR("%s %d blocks"TENDSTR),
+ blockStateName[i], nBlocksPerState[i]));
+
+ if (dev->blocksInCheckpoint != nBlocksPerState[YAFFS_BLOCK_STATE_CHECKPOINT])
+ T(YAFFS_TRACE_VERIFY,
+ (TSTR("Checkpoint block count wrong dev %d count %d"TENDSTR),
+ dev->blocksInCheckpoint, nBlocksPerState[YAFFS_BLOCK_STATE_CHECKPOINT]));
+
+ if (dev->nErasedBlocks != nBlocksPerState[YAFFS_BLOCK_STATE_EMPTY])
+ T(YAFFS_TRACE_VERIFY,
+ (TSTR("Erased block count wrong dev %d count %d"TENDSTR),
+ dev->nErasedBlocks, nBlocksPerState[YAFFS_BLOCK_STATE_EMPTY]));
+
+ if (nBlocksPerState[YAFFS_BLOCK_STATE_COLLECTING] > 1)
+ T(YAFFS_TRACE_VERIFY,
+ (TSTR("Too many collecting blocks %d (max is 1)"TENDSTR),
+ nBlocksPerState[YAFFS_BLOCK_STATE_COLLECTING]));
+
+ T(YAFFS_TRACE_VERIFY, (TSTR(""TENDSTR)));
+
+}
+
+/*
+ * Verify the object header. oh must be valid, but obj and tags may be NULL in which
+ * case those tests will not be performed.
+ */
+static void yaffs_VerifyObjectHeader(yaffs_Object *obj, yaffs_ObjectHeader *oh, yaffs_ExtendedTags *tags, int parentCheck)
+{
+ if (obj && yaffs_SkipVerification(obj->myDev))
+ return;
+
+ if (!(tags && obj && oh)) {
+ T(YAFFS_TRACE_VERIFY,
+ (TSTR("Verifying object header tags %p obj %p oh %p"TENDSTR),
+ tags, obj, oh));
+ return;
+ }
+
+ if (oh->type <= YAFFS_OBJECT_TYPE_UNKNOWN ||
+ oh->type > YAFFS_OBJECT_TYPE_MAX)
+ T(YAFFS_TRACE_VERIFY,
+ (TSTR("Obj %d header type is illegal value 0x%x"TENDSTR),
+ tags->objectId, oh->type));
+
+ if (tags->objectId != obj->objectId)
+ T(YAFFS_TRACE_VERIFY,
+ (TSTR("Obj %d header mismatch objectId %d"TENDSTR),
+ tags->objectId, obj->objectId));
+
+
+ /*
+ * Check that the object's parent ids match if parentCheck requested.
+ *
+ * Tests do not apply to the root object.
+ */
+
+ if (parentCheck && tags->objectId > 1 && !obj->parent)
+ T(YAFFS_TRACE_VERIFY,
+ (TSTR("Obj %d header mismatch parentId %d obj->parent is NULL"TENDSTR),
+ tags->objectId, oh->parentObjectId));
+
+ if (parentCheck && obj->parent &&
+ oh->parentObjectId != obj->parent->objectId &&
+ (oh->parentObjectId != YAFFS_OBJECTID_UNLINKED ||
+ obj->parent->objectId != YAFFS_OBJECTID_DELETED))
+ T(YAFFS_TRACE_VERIFY,
+ (TSTR("Obj %d header mismatch parentId %d parentObjectId %d"TENDSTR),
+ tags->objectId, oh->parentObjectId, obj->parent->objectId));
+
+ if (tags->objectId > 1 && oh->name[0] == 0) /* Null name */
+ T(YAFFS_TRACE_VERIFY,
+ (TSTR("Obj %d header name is NULL"TENDSTR),
+ obj->objectId));
+
+ if (tags->objectId > 1 && ((__u8)(oh->name[0])) == 0xff) /* Trashed name */
+ T(YAFFS_TRACE_VERIFY,
+ (TSTR("Obj %d header name is 0xFF"TENDSTR),
+ obj->objectId));
+}
+
+
+
+static int yaffs_VerifyTnodeWorker(yaffs_Object *obj, yaffs_Tnode *tn,
+ __u32 level, int chunkOffset)
+{
+ int i;
+ yaffs_Device *dev = obj->myDev;
+ int ok = 1;
+
+ if (tn) {
+ if (level > 0) {
+
+ for (i = 0; i < YAFFS_NTNODES_INTERNAL && ok; i++) {
+ if (tn->internal[i]) {
+ ok = yaffs_VerifyTnodeWorker(obj,
+ tn->internal[i],
+ level - 1,
+ (chunkOffset<<YAFFS_TNODES_INTERNAL_BITS) + i);
+ }
+ }
+ } else if (level == 0) {
+ yaffs_ExtendedTags tags;
+ __u32 objectId = obj->objectId;
+
+ chunkOffset <<= YAFFS_TNODES_LEVEL0_BITS;
+
+ for (i = 0; i < YAFFS_NTNODES_LEVEL0; i++) {
+ __u32 theChunk = yaffs_GetChunkGroupBase(dev, tn, i);
+
+ if (theChunk > 0) {
+ /* T(~0,(TSTR("verifying (%d:%d) %d"TENDSTR),tags.objectId,tags.chunkId,theChunk)); */
+ yaffs_ReadChunkWithTagsFromNAND(dev, theChunk, NULL, &tags);
+ if (tags.objectId != objectId || tags.chunkId != chunkOffset) {
+ T(~0, (TSTR("Object %d chunkId %d NAND mismatch chunk %d tags (%d:%d)"TENDSTR),
+ objectId, chunkOffset, theChunk,
+ tags.objectId, tags.chunkId));
+ }
+ }
+ chunkOffset++;
+ }
+ }
+ }
+
+ return ok;
+
+}
+
+
+static void yaffs_VerifyFile(yaffs_Object *obj)
+{
+ int requiredTallness;
+ int actualTallness;
+ __u32 lastChunk;
+ __u32 x;
+ __u32 i;
+ yaffs_Device *dev;
+ yaffs_ExtendedTags tags;
+ yaffs_Tnode *tn;
+ __u32 objectId;
+
+ if (!obj)
+ return;
+
+ if (yaffs_SkipVerification(obj->myDev))
+ return;
+
+ dev = obj->myDev;
+ objectId = obj->objectId;
+
+ /* Check file size is consistent with tnode depth */
+ lastChunk = obj->variant.fileVariant.fileSize / dev->nDataBytesPerChunk + 1;
+ x = lastChunk >> YAFFS_TNODES_LEVEL0_BITS;
+ requiredTallness = 0;
+ while (x > 0) {
+ x >>= YAFFS_TNODES_INTERNAL_BITS;
+ requiredTallness++;
+ }
+
+ actualTallness = obj->variant.fileVariant.topLevel;
+
+ /* Check that the chunks in the tnode tree are all correct.
+ * We do this by scanning through the tnode tree and
+ * checking the tags for every chunk match.
+ */
+
+ if (yaffs_SkipNANDVerification(dev))
+ return;
+
+ for (i = 1; i <= lastChunk; i++) {
+ tn = yaffs_FindLevel0Tnode(dev, &obj->variant.fileVariant, i);
+
+ if (tn) {
+ __u32 theChunk = yaffs_GetChunkGroupBase(dev, tn, i);
+ if (theChunk > 0) {
+ /* T(~0,(TSTR("verifying (%d:%d) %d"TENDSTR),objectId,i,theChunk)); */
+ yaffs_ReadChunkWithTagsFromNAND(dev, theChunk, NULL, &tags);
+ if (tags.objectId != objectId || tags.chunkId != i) {
+ T(~0, (TSTR("Object %d chunkId %d NAND mismatch chunk %d tags (%d:%d)"TENDSTR),
+ objectId, i, theChunk,
+ tags.objectId, tags.chunkId));
+ }
+ }
+ }
+ }
+}
+
+
+static void yaffs_VerifyHardLink(yaffs_Object *obj)
+{
+ if (obj && yaffs_SkipVerification(obj->myDev))
+ return;
+
+ /* Verify sane equivalent object */
+}
+
+static void yaffs_VerifySymlink(yaffs_Object *obj)
+{
+ if (obj && yaffs_SkipVerification(obj->myDev))
+ return;
+
+ /* Verify symlink string */
+}
+
+static void yaffs_VerifySpecial(yaffs_Object *obj)
+{
+ if (obj && yaffs_SkipVerification(obj->myDev))
+ return;
+}
+
+static void yaffs_VerifyObject(yaffs_Object *obj)
+{
+ yaffs_Device *dev;
+
+ __u32 chunkMin;
+ __u32 chunkMax;
+
+ __u32 chunkIdOk;
+ __u32 chunkInRange;
+ __u32 chunkShouldNotBeDeleted;
+ __u32 chunkValid;
+
+ if (!obj)
+ return;
+
+ if (obj->beingCreated)
+ return;
+
+ dev = obj->myDev;
+
+ if (yaffs_SkipVerification(dev))
+ return;
+
+ /* Check sane object header chunk */
+
+ chunkMin = dev->internalStartBlock * dev->param.nChunksPerBlock;
+ chunkMax = (dev->internalEndBlock+1) * dev->param.nChunksPerBlock - 1;
+
+ chunkInRange = (((unsigned)(obj->hdrChunk)) >= chunkMin && ((unsigned)(obj->hdrChunk)) <= chunkMax);
+ chunkIdOk = chunkInRange || (obj->hdrChunk == 0);
+ chunkValid = chunkInRange &&
+ yaffs_CheckChunkBit(dev,
+ obj->hdrChunk / dev->param.nChunksPerBlock,
+ obj->hdrChunk % dev->param.nChunksPerBlock);
+ chunkShouldNotBeDeleted = chunkInRange && !chunkValid;
+
+ if (!obj->fake &&
+ (!chunkIdOk || chunkShouldNotBeDeleted)) {
+ T(YAFFS_TRACE_VERIFY,
+ (TSTR("Obj %d has chunkId %d %s %s"TENDSTR),
+ obj->objectId, obj->hdrChunk,
+ chunkIdOk ? "" : ",out of range",
+ chunkShouldNotBeDeleted ? ",marked as deleted" : ""));
+ }
+
+ if (chunkValid && !yaffs_SkipNANDVerification(dev)) {
+ yaffs_ExtendedTags tags;
+ yaffs_ObjectHeader *oh;
+ __u8 *buffer = yaffs_GetTempBuffer(dev, __LINE__);
+
+ oh = (yaffs_ObjectHeader *)buffer;
+
+ yaffs_ReadChunkWithTagsFromNAND(dev, obj->hdrChunk, buffer,
+ &tags);
+
+ yaffs_VerifyObjectHeader(obj, oh, &tags, 1);
+
+ yaffs_ReleaseTempBuffer(dev, buffer, __LINE__);
+ }
+
+ /* Verify it has a parent */
+ if (obj && !obj->fake &&
+ (!obj->parent || obj->parent->myDev != dev)) {
+ T(YAFFS_TRACE_VERIFY,
+ (TSTR("Obj %d has parent pointer %p which does not look like an object"TENDSTR),
+ obj->objectId, obj->parent));
+ }
+
+ /* Verify parent is a directory */
+ if (obj->parent && obj->parent->variantType != YAFFS_OBJECT_TYPE_DIRECTORY) {
+ T(YAFFS_TRACE_VERIFY,
+ (TSTR("Obj %d's parent is not a directory (type %d)"TENDSTR),
+ obj->objectId, obj->parent->variantType));
+ }
+
+ switch (obj->variantType) {
+ case YAFFS_OBJECT_TYPE_FILE:
+ yaffs_VerifyFile(obj);
+ break;
+ case YAFFS_OBJECT_TYPE_SYMLINK:
+ yaffs_VerifySymlink(obj);
+ break;
+ case YAFFS_OBJECT_TYPE_DIRECTORY:
+ yaffs_VerifyDirectory(obj);
+ break;
+ case YAFFS_OBJECT_TYPE_HARDLINK:
+ yaffs_VerifyHardLink(obj);
+ break;
+ case YAFFS_OBJECT_TYPE_SPECIAL:
+ yaffs_VerifySpecial(obj);
+ break;
+ case YAFFS_OBJECT_TYPE_UNKNOWN:
+ default:
+ T(YAFFS_TRACE_VERIFY,
+ (TSTR("Obj %d has illegaltype %d"TENDSTR),
+ obj->objectId, obj->variantType));
+ break;
+ }
+}
+
+static void yaffs_VerifyObjects(yaffs_Device *dev)
+{
+ yaffs_Object *obj;
+ int i;
+ struct ylist_head *lh;
+
+ if (yaffs_SkipVerification(dev))
+ return;
+
+ /* Iterate through the objects in each hash entry */
+
+ for (i = 0; i < YAFFS_NOBJECT_BUCKETS; i++) {
+ ylist_for_each(lh, &dev->objectBucket[i].list) {
+ if (lh) {
+ obj = ylist_entry(lh, yaffs_Object, hashLink);
+ yaffs_VerifyObject(obj);
+ }
+ }
+ }
+}
+
+
/*
* Simple hash function. Needs to have a reasonable spread
*/
-
+
static Y_INLINE int yaffs_HashFunction(int n)
{
n = abs(n);
- return (n % YAFFS_NOBJECT_BUCKETS);
+ return n % YAFFS_NOBJECT_BUCKETS;
}
/*
- * Access functions to useful fake objects
+ * Access functions to useful fake objects.
+ * Note that root might have a presence in NAND if permissions are set.
*/
-
-yaffs_Object *yaffs_Root(yaffs_Device * dev)
+
+yaffs_Object *yaffs_Root(yaffs_Device *dev)
{
return dev->rootDir;
}
-yaffs_Object *yaffs_LostNFound(yaffs_Device * dev)
+yaffs_Object *yaffs_LostNFound(yaffs_Device *dev)
{
return dev->lostNFoundDir;
}
/*
* Erased NAND checking functions
*/
-
-int yaffs_CheckFF(__u8 * buffer, int nBytes)
+
+int yaffs_CheckFF(__u8 *buffer, int nBytes)
{
/* Horrible, slow implementation */
while (nBytes--) {
}
static int yaffs_CheckChunkErased(struct yaffs_DeviceStruct *dev,
- int chunkInNAND)
+ int chunkInNAND)
{
-
int retval = YAFFS_OK;
__u8 *data = yaffs_GetTempBuffer(dev, __LINE__);
yaffs_ExtendedTags tags;
int result;
result = yaffs_ReadChunkWithTagsFromNAND(dev, chunkInNAND, data, &tags);
-
- if(tags.eccResult > YAFFS_ECC_RESULT_NO_ERROR)
+
+ if (tags.eccResult > YAFFS_ECC_RESULT_NO_ERROR)
retval = YAFFS_FAIL;
-
if (!yaffs_CheckFF(data, dev->nDataBytesPerChunk) || tags.chunkUsed) {
T(YAFFS_TRACE_NANDACCESS,
(TSTR("Chunk %d not erased" TENDSTR), chunkInNAND));
retval = YAFFS_FAIL;
- }
+ }
+
+ yaffs_ReleaseTempBuffer(dev, data, __LINE__);
+
+ return retval;
+
+}
+
+
+static int yaffs_VerifyChunkWritten(yaffs_Device *dev,
+ int chunkInNAND,
+ const __u8 *data,
+ yaffs_ExtendedTags *tags)
+{
+ int retval = YAFFS_OK;
+ yaffs_ExtendedTags tempTags;
+ __u8 *buffer = yaffs_GetTempBuffer(dev,__LINE__);
+ int result;
+
+ result = yaffs_ReadChunkWithTagsFromNAND(dev,chunkInNAND,buffer,&tempTags);
+ if(memcmp(buffer,data,dev->nDataBytesPerChunk) ||
+ tempTags.objectId != tags->objectId ||
+ tempTags.chunkId != tags->chunkId ||
+ tempTags.byteCount != tags->byteCount)
+ retval = YAFFS_FAIL;
- yaffs_ReleaseTempBuffer(dev, data, __LINE__);
+ yaffs_ReleaseTempBuffer(dev, buffer, __LINE__);
return retval;
-
}
static int yaffs_WriteNewChunkWithTagsToNAND(struct yaffs_DeviceStruct *dev,
- const __u8 * data,
- yaffs_ExtendedTags * tags,
- int useReserve)
+ const __u8 *data,
+ yaffs_ExtendedTags *tags,
+ int useReserve)
{
+ int attempts = 0;
+ int writeOk = 0;
int chunk;
- int writeOk = 0;
- int erasedOk = 1;
- int attempts = 0;
- yaffs_BlockInfo *bi;
-
yaffs_InvalidateCheckpoint(dev);
do {
- chunk = yaffs_AllocateChunk(dev, useReserve,&bi);
-
- if (chunk >= 0) {
- /* First check this chunk is erased, if it needs checking.
- * The checking policy (unless forced always on) is as follows:
- * Check the first page we try to write in a block.
- * - If the check passes then we don't need to check any more.
- * - If the check fails, we check again...
- * If the block has been erased, we don't need to check.
- *
- * However, if the block has been prioritised for gc, then
- * we think there might be something odd about this block
- * and stop using it.
- *
- * Rationale:
- * We should only ever see chunks that have not been erased
- * if there was a partially written chunk due to power loss
- * This checking policy should catch that case with very
- * few checks and thus save a lot of checks that are most likely not
- * needed.
- */
-
- if(bi->gcPrioritise){
- yaffs_DeleteChunk(dev, chunk, 1, __LINE__);
- } else {
-#ifdef CONFIG_YAFFS_ALWAYS_CHECK_CHUNK_ERASED
+ yaffs_BlockInfo *bi = 0;
+ int erasedOk = 0;
- bi->skipErasedCheck = 0;
+ chunk = yaffs_AllocateChunk(dev, useReserve, &bi);
+ if (chunk < 0) {
+ /* no space */
+ break;
+ }
-#endif
- if(!bi->skipErasedCheck){
- erasedOk = yaffs_CheckChunkErased(dev, chunk);
- if(erasedOk && !bi->gcPrioritise)
- bi->skipErasedCheck = 1;
- }
+ /* First check this chunk is erased, if it needs
+ * checking. The checking policy (unless forced
+ * always on) is as follows:
+ *
+ * Check the first page we try to write in a block.
+ * If the check passes then we don't need to check any
+ * more. If the check fails, we check again...
+ * If the block has been erased, we don't need to check.
+ *
+ * However, if the block has been prioritised for gc,
+ * then we think there might be something odd about
+ * this block and stop using it.
+ *
+ * Rationale: We should only ever see chunks that have
+ * not been erased if there was a partially written
+ * chunk due to power loss. This checking policy should
+ * catch that case with very few checks and thus save a
+ * lot of checks that are most likely not needed.
+ *
+ * Mods to the above
+ * If an erase check fails or the write fails we skip the
+ * rest of the block.
+ */
- if (!erasedOk) {
- T(YAFFS_TRACE_ERROR,
- (TSTR
- ("**>> yaffs chunk %d was not erased"
- TENDSTR), chunk));
- } else {
- writeOk =
- yaffs_WriteChunkWithTagsToNAND(dev, chunk,
- data, tags);
- }
-
- attempts++;
+ /* let's give it a try */
+ attempts++;
- if (writeOk) {
- /*
- * Copy the data into the robustification buffer.
- * NB We do this at the end to prevent duplicates in the case of a write error.
- * Todo
- */
- yaffs_HandleWriteChunkOk(dev, chunk, data, tags);
-
- } else {
- /* The erased check or write failed */
- yaffs_HandleWriteChunkError(dev, chunk, erasedOk);
- }
+#ifdef CONFIG_YAFFS_ALWAYS_CHECK_CHUNK_ERASED
+ bi->skipErasedCheck = 0;
+#endif
+ if (!bi->skipErasedCheck) {
+ erasedOk = yaffs_CheckChunkErased(dev, chunk);
+ if (erasedOk != YAFFS_OK) {
+ T(YAFFS_TRACE_ERROR,
+ (TSTR("**>> yaffs chunk %d was not erased"
+ TENDSTR), chunk));
+
+ /* If not erased, delete this one,
+ * skip rest of block and
+ * try another chunk */
+ yaffs_DeleteChunk(dev,chunk,1,__LINE__);
+ yaffs_SkipRestOfBlock(dev);
+ continue;
}
}
- } while (chunk >= 0 && !writeOk);
+ writeOk = yaffs_WriteChunkWithTagsToNAND(dev, chunk,
+ data, tags);
+
+ if(!bi->skipErasedCheck)
+ writeOk = yaffs_VerifyChunkWritten(dev, chunk, data, tags);
+
+ if (writeOk != YAFFS_OK) {
+ /* Clean up aborted write, skip to next block and
+ * try another chunk */
+ yaffs_HandleWriteChunkError(dev, chunk, erasedOk);
+ continue;
+ }
+
+ bi->skipErasedCheck = 1;
+
+ /* Copy the data into the robustification buffer */
+ yaffs_HandleWriteChunkOk(dev, chunk, data, tags);
+
+ } while (writeOk != YAFFS_OK &&
+ (yaffs_wr_attempts <= 0 || attempts <= yaffs_wr_attempts));
+
+ if (!writeOk)
+ chunk = -1;
if (attempts > 1) {
T(YAFFS_TRACE_ERROR,
- (TSTR("**>> yaffs write required %d attempts" TENDSTR),
- attempts));
+ (TSTR("**>> yaffs write required %d attempts" TENDSTR),
+ attempts));
+
dev->nRetriedWrites += (attempts - 1);
}
/*
* Block retiring for handling a broken block.
*/
-
-static void yaffs_RetireBlock(yaffs_Device * dev, int blockInNAND)
+
+static void yaffs_RetireBlock(yaffs_Device *dev, int blockInNAND)
{
yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, blockInNAND);
yaffs_InvalidateCheckpoint(dev);
-
- yaffs_MarkBlockBad(dev, blockInNAND);
+
+ if (yaffs_MarkBlockBad(dev, blockInNAND) != YAFFS_OK) {
+ if (yaffs_EraseBlockInNAND(dev, blockInNAND) != YAFFS_OK) {
+ T(YAFFS_TRACE_ALWAYS, (TSTR(
+ "yaffs: Failed to mark bad and erase block %d"
+ TENDSTR), blockInNAND));
+ } else {
+ yaffs_ExtendedTags tags;
+ int chunkId = blockInNAND * dev->param.nChunksPerBlock;
+
+ __u8 *buffer = yaffs_GetTempBuffer(dev, __LINE__);
+
+ memset(buffer, 0xff, dev->nDataBytesPerChunk);
+ yaffs_InitialiseTags(&tags);
+ tags.sequenceNumber = YAFFS_SEQUENCE_BAD_BLOCK;
+ if (dev->param.writeChunkWithTagsToNAND(dev, chunkId -
+ dev->chunkOffset, buffer, &tags) != YAFFS_OK)
+ T(YAFFS_TRACE_ALWAYS, (TSTR("yaffs: Failed to "
+ TCONT("write bad block marker to block %d")
+ TENDSTR), blockInNAND));
+
+ yaffs_ReleaseTempBuffer(dev, buffer, __LINE__);
+ }
+ }
bi->blockState = YAFFS_BLOCK_STATE_DEAD;
bi->gcPrioritise = 0;
* Functions for robustisizing TODO
*
*/
-
-static void yaffs_HandleWriteChunkOk(yaffs_Device * dev, int chunkInNAND,
- const __u8 * data,
- const yaffs_ExtendedTags * tags)
+
+static void yaffs_HandleWriteChunkOk(yaffs_Device *dev, int chunkInNAND,
+ const __u8 *data,
+ const yaffs_ExtendedTags *tags)
{
}
-static void yaffs_HandleUpdateChunk(yaffs_Device * dev, int chunkInNAND,
- const yaffs_ExtendedTags * tags)
+static void yaffs_HandleUpdateChunk(yaffs_Device *dev, int chunkInNAND,
+ const yaffs_ExtendedTags *tags)
{
}
void yaffs_HandleChunkError(yaffs_Device *dev, yaffs_BlockInfo *bi)
{
- if(!bi->gcPrioritise){
+ if (!bi->gcPrioritise) {
bi->gcPrioritise = 1;
dev->hasPendingPrioritisedGCs = 1;
- bi->chunkErrorStrikes ++;
-
- if(bi->chunkErrorStrikes > 3){
+ bi->chunkErrorStrikes++;
+
+ if (bi->chunkErrorStrikes > 3) {
bi->needsRetiring = 1; /* Too many stikes, so retire this */
T(YAFFS_TRACE_ALWAYS, (TSTR("yaffs: Block struck out" TENDSTR)));
}
-
- }
-}
-
-static void yaffs_ReportOddballBlocks(yaffs_Device *dev)
-{
- int i;
-
- for(i = dev->internalStartBlock; i <= dev->internalEndBlock && (yaffs_traceMask & YAFFS_TRACE_BAD_BLOCKS); i++){
- yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev,i);
- if(bi->needsRetiring || bi->gcPrioritise)
- T(YAFFS_TRACE_BAD_BLOCKS,(TSTR("yaffs block %d%s%s" TENDSTR),
- i,
- bi->needsRetiring ? " needs retiring" : "",
- bi->gcPrioritise ? " gc prioritised" : ""));
-
}
}
-static void yaffs_HandleWriteChunkError(yaffs_Device * dev, int chunkInNAND, int erasedOk)
+static void yaffs_HandleWriteChunkError(yaffs_Device *dev, int chunkInNAND,
+ int erasedOk)
{
-
- int blockInNAND = chunkInNAND / dev->nChunksPerBlock;
+ int blockInNAND = chunkInNAND / dev->param.nChunksPerBlock;
yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, blockInNAND);
- yaffs_HandleChunkError(dev,bi);
-
-
- if(erasedOk ) {
+ yaffs_HandleChunkError(dev, bi);
+
+ if (erasedOk) {
/* Was an actual write failure, so mark the block for retirement */
bi->needsRetiring = 1;
T(YAFFS_TRACE_ERROR | YAFFS_TRACE_BAD_BLOCKS,
(TSTR("**>> Block %d needs retiring" TENDSTR), blockInNAND));
-
-
}
-
+
/* Delete the chunk */
yaffs_DeleteChunk(dev, chunkInNAND, 1, __LINE__);
+ yaffs_SkipRestOfBlock(dev);
}
-/*---------------- Name handling functions ------------*/
+/*---------------- Name handling functions ------------*/
-static __u16 yaffs_CalcNameSum(const YCHAR * name)
+static __u16 yaffs_CalcNameSum(const YCHAR *name)
{
__u16 sum = 0;
__u16 i = 1;
- YUCHAR *bname = (YUCHAR *) name;
+ const YUCHAR *bname = (const YUCHAR *) name;
if (bname) {
- while ((*bname) && (i <= YAFFS_MAX_NAME_LENGTH)) {
+ while ((*bname) && (i < (YAFFS_MAX_NAME_LENGTH/2))) {
#ifdef CONFIG_YAFFS_CASE_INSENSITIVE
sum += yaffs_toupper(*bname) * i;
return sum;
}
-static void yaffs_SetObjectName(yaffs_Object * obj, const YCHAR * name)
+static void yaffs_SetObjectName(yaffs_Object *obj, const YCHAR *name)
{
#ifdef CONFIG_YAFFS_SHORT_NAMES_IN_RAM
- if (name && yaffs_strlen(name) <= YAFFS_SHORT_NAME_LENGTH) {
+ memset(obj->shortName, 0, sizeof(YCHAR) * (YAFFS_SHORT_NAME_LENGTH+1));
+ if (name && yaffs_strnlen(name,YAFFS_SHORT_NAME_LENGTH+1) <= YAFFS_SHORT_NAME_LENGTH)
yaffs_strcpy(obj->shortName, name);
- } else {
+ else
obj->shortName[0] = _Y('\0');
- }
#endif
obj->sum = yaffs_CalcNameSum(name);
}
* The list is hooked together using the first pointer
* in the tnode.
*/
-
+
/* yaffs_CreateTnodes creates a bunch more tnodes and
* adds them to the tnode free list.
* Don't use this function directly
*/
+static Y_INLINE int yaffs_CalcTnodeSize(yaffs_Device *dev)
+{
+ int tnodeSize;
+ /* Calculate the tnode size in bytes for variable width tnode support.
+ * Must be a multiple of 32-bits */
+ tnodeSize = (dev->tnodeWidth * YAFFS_NTNODES_LEVEL0)/8;
-static int yaffs_CreateTnodes(yaffs_Device * dev, int nTnodes)
+ if (tnodeSize < sizeof(yaffs_Tnode))
+ tnodeSize = sizeof(yaffs_Tnode);
+ return tnodeSize;
+}
+
+static int yaffs_CreateTnodes(yaffs_Device *dev, int nTnodes)
{
int i;
- int tnodeSize;
+ int tnodeSize = yaffs_CalcTnodeSize(dev);
yaffs_Tnode *newTnodes;
__u8 *mem;
yaffs_Tnode *curr;
if (nTnodes < 1)
return YAFFS_OK;
-
- /* Calculate the tnode size in bytes for variable width tnode support.
- * Must be a multiple of 32-bits */
- tnodeSize = (dev->tnodeWidth * YAFFS_NTNODES_LEVEL0)/8;
+
/* make these things */
if (!newTnodes) {
T(YAFFS_TRACE_ERROR,
- (TSTR("yaffs: Could not allocate Tnodes" TENDSTR)));
+ (TSTR("yaffs: Could not allocate Tnodes" TENDSTR)));
return YAFFS_FAIL;
}
dev->freeTnodes = newTnodes;
#else
/* New hookup for wide tnodes */
- for(i = 0; i < nTnodes -1; i++) {
+ for (i = 0; i < nTnodes - 1; i++) {
curr = (yaffs_Tnode *) &mem[i * tnodeSize];
next = (yaffs_Tnode *) &mem[(i+1) * tnodeSize];
curr->internal[0] = next;
}
-
+
curr = (yaffs_Tnode *) &mem[(nTnodes - 1) * tnodeSize];
curr->internal[0] = dev->freeTnodes;
dev->freeTnodes = (yaffs_Tnode *)mem;
* NB If we can't add this to the management list it isn't fatal
* but it just means we can't free this bunch of tnodes later.
*/
-
+
tnl = YMALLOC(sizeof(yaffs_TnodeList));
if (!tnl) {
T(YAFFS_TRACE_ERROR,
(TSTR
("yaffs: Could not add tnodes to management list" TENDSTR)));
-
+ return YAFFS_FAIL;
} else {
tnl->tnodes = newTnodes;
tnl->next = dev->allocatedTnodeList;
/* GetTnode gets us a clean tnode. Tries to make allocate more if we run out */
-static yaffs_Tnode *yaffs_GetTnodeRaw(yaffs_Device * dev)
+static yaffs_Tnode *yaffs_GetTnodeRaw(yaffs_Device *dev)
{
yaffs_Tnode *tn = NULL;
+#ifdef CONFIG_YAFFS_VALGRIND_TEST
+ tn = YMALLOC(yaffs_CalcTnodeSize(dev));
+ if(tn)
+ dev->nTnodesCreated++;
+#else
/* If there are none left make more */
- if (!dev->freeTnodes) {
+ if (!dev->freeTnodes)
yaffs_CreateTnodes(dev, YAFFS_ALLOCATION_NTNODES);
- }
if (dev->freeTnodes) {
tn = dev->freeTnodes;
dev->freeTnodes = dev->freeTnodes->internal[0];
dev->nFreeTnodes--;
}
+#endif
+ dev->nCheckpointBlocksRequired = 0; /* force recalculation*/
return tn;
}
-static yaffs_Tnode *yaffs_GetTnode(yaffs_Device * dev)
+static yaffs_Tnode *yaffs_GetTnode(yaffs_Device *dev)
{
yaffs_Tnode *tn = yaffs_GetTnodeRaw(dev);
-
- if(tn)
- memset(tn, 0, (dev->tnodeWidth * YAFFS_NTNODES_LEVEL0)/8);
+ int tnodeSize = yaffs_CalcTnodeSize(dev);
+
+ if (tn)
+ memset(tn, 0, tnodeSize);
- return tn;
+ return tn;
}
/* FreeTnode frees up a tnode and puts it back on the free list */
-static void yaffs_FreeTnode(yaffs_Device * dev, yaffs_Tnode * tn)
+static void yaffs_FreeTnode(yaffs_Device *dev, yaffs_Tnode *tn)
{
if (tn) {
+#ifdef CONFIG_YAFFS_VALGRIND_TEST
+ YFREE(tn);
+ dev->nTnodesCreated--;
+#else
#ifdef CONFIG_YAFFS_TNODE_LIST_DEBUG
if (tn->internal[YAFFS_NTNODES_INTERNAL] != 0) {
/* Hoosterman, this thing looks like it is already in the list */
tn->internal[0] = dev->freeTnodes;
dev->freeTnodes = tn;
dev->nFreeTnodes++;
+#endif
}
+ dev->nCheckpointBlocksRequired = 0; /* force recalculation*/
}
-static void yaffs_DeinitialiseTnodes(yaffs_Device * dev)
+static void yaffs_DeinitialiseTnodes(yaffs_Device *dev)
{
/* Free the list of allocated tnodes */
yaffs_TnodeList *tmp;
dev->freeTnodes = NULL;
dev->nFreeTnodes = 0;
+ dev->nTnodesCreated = 0;
}
-static void yaffs_InitialiseTnodes(yaffs_Device * dev)
+static void yaffs_InitialiseTnodes(yaffs_Device *dev)
{
dev->allocatedTnodeList = NULL;
dev->freeTnodes = NULL;
dev->nFreeTnodes = 0;
dev->nTnodesCreated = 0;
+}
+
+
+void yaffs_LoadLevel0Tnode(yaffs_Device *dev, yaffs_Tnode *tn, unsigned pos,
+ unsigned val)
+{
+ __u32 *map = (__u32 *)tn;
+ __u32 bitInMap;
+ __u32 bitInWord;
+ __u32 wordInMap;
+ __u32 mask;
+
+ pos &= YAFFS_TNODES_LEVEL0_MASK;
+ val >>= dev->chunkGroupBits;
+
+ bitInMap = pos * dev->tnodeWidth;
+ wordInMap = bitInMap / 32;
+ bitInWord = bitInMap & (32 - 1);
+
+ mask = dev->tnodeMask << bitInWord;
+
+ map[wordInMap] &= ~mask;
+ map[wordInMap] |= (mask & (val << bitInWord));
+ if (dev->tnodeWidth > (32 - bitInWord)) {
+ bitInWord = (32 - bitInWord);
+ wordInMap++;;
+ mask = dev->tnodeMask >> (/*dev->tnodeWidth -*/ bitInWord);
+ map[wordInMap] &= ~mask;
+ map[wordInMap] |= (mask & (val >> bitInWord));
+ }
}
+static __u32 yaffs_GetChunkGroupBase(yaffs_Device *dev, yaffs_Tnode *tn,
+ unsigned pos)
+{
+ __u32 *map = (__u32 *)tn;
+ __u32 bitInMap;
+ __u32 bitInWord;
+ __u32 wordInMap;
+ __u32 val;
+
+ pos &= YAFFS_TNODES_LEVEL0_MASK;
+
+ bitInMap = pos * dev->tnodeWidth;
+ wordInMap = bitInMap / 32;
+ bitInWord = bitInMap & (32 - 1);
+
+ val = map[wordInMap] >> bitInWord;
+
+ if (dev->tnodeWidth > (32 - bitInWord)) {
+ bitInWord = (32 - bitInWord);
+ wordInMap++;;
+ val |= (map[wordInMap] << bitInWord);
+ }
+
+ val &= dev->tnodeMask;
+ val <<= dev->chunkGroupBits;
-void yaffs_PutLevel0Tnode(yaffs_Device *dev, yaffs_Tnode *tn, unsigned pos, unsigned val)
-{
- __u32 *map = (__u32 *)tn;
- __u32 bitInMap;
- __u32 bitInWord;
- __u32 wordInMap;
- __u32 mask;
-
- pos &= YAFFS_TNODES_LEVEL0_MASK;
- val >>= dev->chunkGroupBits;
-
- bitInMap = pos * dev->tnodeWidth;
- wordInMap = bitInMap /32;
- bitInWord = bitInMap & (32 -1);
-
- mask = dev->tnodeMask << bitInWord;
-
- map[wordInMap] &= ~mask;
- map[wordInMap] |= (mask & (val << bitInWord));
-
- if(dev->tnodeWidth > (32-bitInWord)) {
- bitInWord = (32 - bitInWord);
- wordInMap++;;
- mask = dev->tnodeMask >> (/*dev->tnodeWidth -*/ bitInWord);
- map[wordInMap] &= ~mask;
- map[wordInMap] |= (mask & (val >> bitInWord));
- }
-}
-
-__u32 yaffs_GetChunkGroupBase(yaffs_Device *dev, yaffs_Tnode *tn, unsigned pos)
-{
- __u32 *map = (__u32 *)tn;
- __u32 bitInMap;
- __u32 bitInWord;
- __u32 wordInMap;
- __u32 val;
-
- pos &= YAFFS_TNODES_LEVEL0_MASK;
-
- bitInMap = pos * dev->tnodeWidth;
- wordInMap = bitInMap /32;
- bitInWord = bitInMap & (32 -1);
-
- val = map[wordInMap] >> bitInWord;
-
- if(dev->tnodeWidth > (32-bitInWord)) {
- bitInWord = (32 - bitInWord);
- wordInMap++;;
- val |= (map[wordInMap] << bitInWord);
- }
-
- val &= dev->tnodeMask;
- val <<= dev->chunkGroupBits;
-
- return val;
+ return val;
}
/* ------------------- End of individual tnode manipulation -----------------*/
*/
/* FindLevel0Tnode finds the level 0 tnode, if one exists. */
-static yaffs_Tnode *yaffs_FindLevel0Tnode(yaffs_Device * dev,
- yaffs_FileStructure * fStruct,
- __u32 chunkId)
+static yaffs_Tnode *yaffs_FindLevel0Tnode(yaffs_Device *dev,
+ yaffs_FileStructure *fStruct,
+ __u32 chunkId)
{
-
yaffs_Tnode *tn = fStruct->top;
__u32 i;
int requiredTallness;
int level = fStruct->topLevel;
/* Check sane level and chunk Id */
- if (level < 0 || level > YAFFS_TNODES_MAX_LEVEL) {
+ if (level < 0 || level > YAFFS_TNODES_MAX_LEVEL)
return NULL;
- }
- if (chunkId > YAFFS_MAX_CHUNK_ID) {
+ if (chunkId > YAFFS_MAX_CHUNK_ID)
return NULL;
- }
/* First check we're tall enough (ie enough topLevel) */
requiredTallness++;
}
- if (requiredTallness > fStruct->topLevel) {
- /* Not tall enough, so we can't find it, return NULL. */
- return NULL;
- }
+ if (requiredTallness > fStruct->topLevel)
+ return NULL; /* Not tall enough, so we can't find it */
/* Traverse down to level 0 */
while (level > 0 && tn) {
- tn = tn->
- internal[(chunkId >>
- ( YAFFS_TNODES_LEVEL0_BITS +
- (level - 1) *
- YAFFS_TNODES_INTERNAL_BITS)
- ) &
- YAFFS_TNODES_INTERNAL_MASK];
+ tn = tn->internal[(chunkId >>
+ (YAFFS_TNODES_LEVEL0_BITS +
+ (level - 1) *
+ YAFFS_TNODES_INTERNAL_BITS)) &
+ YAFFS_TNODES_INTERNAL_MASK];
level--;
-
}
return tn;
* If the tn argument is NULL, then a fresh tnode will be added otherwise the specified tn will
* be plugged into the ttree.
*/
-
-static yaffs_Tnode *yaffs_AddOrFindLevel0Tnode(yaffs_Device * dev,
- yaffs_FileStructure * fStruct,
- __u32 chunkId,
- yaffs_Tnode *passedTn)
-{
+static yaffs_Tnode *yaffs_AddOrFindLevel0Tnode(yaffs_Device *dev,
+ yaffs_FileStructure *fStruct,
+ __u32 chunkId,
+ yaffs_Tnode *passedTn)
+{
int requiredTallness;
int i;
int l;
/* Check sane level and page Id */
- if (fStruct->topLevel < 0 || fStruct->topLevel > YAFFS_TNODES_MAX_LEVEL) {
+ if (fStruct->topLevel < 0 || fStruct->topLevel > YAFFS_TNODES_MAX_LEVEL)
return NULL;
- }
- if (chunkId > YAFFS_MAX_CHUNK_ID) {
+ if (chunkId > YAFFS_MAX_CHUNK_ID)
return NULL;
- }
/* First check we're tall enough (ie enough topLevel) */
if (requiredTallness > fStruct->topLevel) {
- /* Not tall enough,gotta make the tree taller */
+ /* Not tall enough, gotta make the tree taller */
for (i = fStruct->topLevel; i < requiredTallness; i++) {
-
+
tn = yaffs_GetTnode(dev);
if (tn) {
tn->internal[0] = fStruct->top;
fStruct->top = tn;
+ fStruct->topLevel++;
} else {
T(YAFFS_TRACE_ERROR,
- (TSTR("yaffs: no more tnodes" TENDSTR)));
+ (TSTR("yaffs: no more tnodes" TENDSTR)));
+ return NULL;
}
}
-
- fStruct->topLevel = requiredTallness;
}
/* Traverse down to level 0, adding anything we need */
l = fStruct->topLevel;
tn = fStruct->top;
-
- if(l > 0) {
+
+ if (l > 0) {
while (l > 0 && tn) {
x = (chunkId >>
- ( YAFFS_TNODES_LEVEL0_BITS +
+ (YAFFS_TNODES_LEVEL0_BITS +
(l - 1) * YAFFS_TNODES_INTERNAL_BITS)) &
YAFFS_TNODES_INTERNAL_MASK;
- if((l>1) && !tn->internal[x]){
+ if ((l > 1) && !tn->internal[x]) {
/* Add missing non-level-zero tnode */
tn->internal[x] = yaffs_GetTnode(dev);
-
- } else if(l == 1) {
+ if(!tn->internal[x])
+ return NULL;
+ } else if (l == 1) {
/* Looking from level 1 at level 0 */
- if (passedTn) {
+ if (passedTn) {
/* If we already have one, then release it.*/
- if(tn->internal[x])
- yaffs_FreeTnode(dev,tn->internal[x]);
+ if (tn->internal[x])
+ yaffs_FreeTnode(dev, tn->internal[x]);
tn->internal[x] = passedTn;
-
- } else if(!tn->internal[x]) {
+
+ } else if (!tn->internal[x]) {
/* Don't have one, none passed in */
tn->internal[x] = yaffs_GetTnode(dev);
+ if(!tn->internal[x])
+ return NULL;
}
}
-
+
tn = tn->internal[x];
l--;
}
} else {
/* top is level 0 */
- if(passedTn) {
- memcpy(tn,passedTn,(dev->tnodeWidth * YAFFS_NTNODES_LEVEL0)/8);
- yaffs_FreeTnode(dev,passedTn);
+ if (passedTn) {
+ memcpy(tn, passedTn, (dev->tnodeWidth * YAFFS_NTNODES_LEVEL0)/8);
+ yaffs_FreeTnode(dev, passedTn);
}
}
return tn;
}
-static int yaffs_FindChunkInGroup(yaffs_Device * dev, int theChunk,
- yaffs_ExtendedTags * tags, int objectId,
- int chunkInInode)
+static int yaffs_FindChunkInGroup(yaffs_Device *dev, int theChunk,
+ yaffs_ExtendedTags *tags, int objectId,
+ int chunkInInode)
{
int j;
for (j = 0; theChunk && j < dev->chunkGroupSize; j++) {
- if (yaffs_CheckChunkBit
- (dev, theChunk / dev->nChunksPerBlock,
- theChunk % dev->nChunksPerBlock)) {
- yaffs_ReadChunkWithTagsFromNAND(dev, theChunk, NULL,
- tags);
- if (yaffs_TagsMatch(tags, objectId, chunkInInode)) {
- /* found it; */
+ if (yaffs_CheckChunkBit(dev, theChunk / dev->param.nChunksPerBlock,
+ theChunk % dev->param.nChunksPerBlock)) {
+
+ if(dev->chunkGroupSize == 1)
return theChunk;
-
+ else {
+ yaffs_ReadChunkWithTagsFromNAND(dev, theChunk, NULL,
+ tags);
+ if (yaffs_TagsMatch(tags, objectId, chunkInInode)) {
+ /* found it; */
+ return theChunk;
+ }
}
}
theChunk++;
/* DeleteWorker scans backwards through the tnode tree and deletes all the
* chunks and tnodes in the file
- * Returns 1 if the tree was deleted.
+ * Returns 1 if the tree was deleted.
* Returns 0 if it stopped early due to hitting the limit and the delete is incomplete.
*/
-static int yaffs_DeleteWorker(yaffs_Object * in, yaffs_Tnode * tn, __u32 level,
+static int yaffs_DeleteWorker(yaffs_Object *in, yaffs_Tnode *tn, __u32 level,
int chunkOffset, int *limit)
{
int i;
if (tn) {
if (level > 0) {
-
for (i = YAFFS_NTNODES_INTERNAL - 1; allDone && i >= 0;
i--) {
if (tn->internal[i]) {
allDone = 0;
} else {
allDone =
- yaffs_DeleteWorker(in,
- tn->
- internal
- [i],
- level -
- 1,
- (chunkOffset
+ yaffs_DeleteWorker(in,
+ tn->
+ internal
+ [i],
+ level -
+ 1,
+ (chunkOffset
<<
YAFFS_TNODES_INTERNAL_BITS)
- + i,
- limit);
+ + i,
+ limit);
}
if (allDone) {
yaffs_FreeTnode(dev,
tn->internal[i] = NULL;
}
}
-
}
return (allDone) ? 1 : 0;
} else if (level == 0) {
int hitLimit = 0;
for (i = YAFFS_NTNODES_LEVEL0 - 1; i >= 0 && !hitLimit;
- i--) {
- theChunk = yaffs_GetChunkGroupBase(dev,tn,i);
+ i--) {
+ theChunk = yaffs_GetChunkGroupBase(dev, tn, i);
if (theChunk) {
- chunkInInode =
- (chunkOffset <<
- YAFFS_TNODES_LEVEL0_BITS) + i;
+ chunkInInode = (chunkOffset <<
+ YAFFS_TNODES_LEVEL0_BITS) + i;
foundChunk =
- yaffs_FindChunkInGroup(dev,
- theChunk,
- &tags,
- in->objectId,
- chunkInInode);
+ yaffs_FindChunkInGroup(dev,
+ theChunk,
+ &tags,
+ in->objectId,
+ chunkInInode);
if (foundChunk > 0) {
yaffs_DeleteChunk(dev,
in->nDataChunks--;
if (limit) {
*limit = *limit - 1;
- if (*limit <= 0) {
+ if (*limit <= 0)
hitLimit = 1;
- }
}
}
- yaffs_PutLevel0Tnode(dev,tn,i,0);
+ yaffs_LoadLevel0Tnode(dev, tn, i, 0);
}
}
}
-static void yaffs_SoftDeleteChunk(yaffs_Device * dev, int chunk)
+static void yaffs_SoftDeleteChunk(yaffs_Device *dev, int chunk)
{
-
yaffs_BlockInfo *theBlock;
T(YAFFS_TRACE_DELETION, (TSTR("soft delete chunk %d" TENDSTR), chunk));
- theBlock = yaffs_GetBlockInfo(dev, chunk / dev->nChunksPerBlock);
+ theBlock = yaffs_GetBlockInfo(dev, chunk / dev->param.nChunksPerBlock);
if (theBlock) {
theBlock->softDeletions++;
dev->nFreeChunks++;
* of the tnode.
* Thus, essentially this is the same as DeleteWorker except that the chunks are soft deleted.
*/
-
-static int yaffs_SoftDeleteWorker(yaffs_Object * in, yaffs_Tnode * tn,
+
+static int yaffs_SoftDeleteWorker(yaffs_Object *in, yaffs_Tnode *tn,
__u32 level, int chunkOffset)
{
int i;
} else if (level == 0) {
for (i = YAFFS_NTNODES_LEVEL0 - 1; i >= 0; i--) {
- theChunk = yaffs_GetChunkGroupBase(dev,tn,i);
+ theChunk = yaffs_GetChunkGroupBase(dev, tn, i);
if (theChunk) {
/* Note this does not find the real chunk, only the chunk group.
- * We make an assumption that a chunk group is not larger than
+ * We make an assumption that a chunk group is not larger than
* a block.
*/
yaffs_SoftDeleteChunk(dev, theChunk);
- yaffs_PutLevel0Tnode(dev,tn,i,0);
+ yaffs_LoadLevel0Tnode(dev, tn, i, 0);
}
}
}
-static void yaffs_SoftDeleteFile(yaffs_Object * obj)
+static void yaffs_SoftDeleteFile(yaffs_Object *obj)
{
if (obj->deleted &&
obj->variantType == YAFFS_OBJECT_TYPE_FILE && !obj->softDeleted) {
* level 0 tnode entries must be zeroed out.
* Could also use this for file deletion, but that's probably better handled
* by a special case.
+ *
+ * This function is recursive. For levels > 0 the function is called again on
+ * any sub-tree. For level == 0 we just check if the sub-tree has data.
+ * If there is no data in a subtree then it is pruned.
*/
-static yaffs_Tnode *yaffs_PruneWorker(yaffs_Device * dev, yaffs_Tnode * tn,
- __u32 level, int del0)
+static yaffs_Tnode *yaffs_PruneWorker(yaffs_Device *dev, yaffs_Tnode *tn,
+ __u32 level, int del0)
{
int i;
int hasData;
if (tn) {
hasData = 0;
- for (i = 0; i < YAFFS_NTNODES_INTERNAL; i++) {
- if (tn->internal[i] && level > 0) {
- tn->internal[i] =
- yaffs_PruneWorker(dev, tn->internal[i],
- level - 1,
- (i == 0) ? del0 : 1);
- }
+ if(level > 0){
+ for (i = 0; i < YAFFS_NTNODES_INTERNAL; i++) {
+ if (tn->internal[i]) {
+ tn->internal[i] =
+ yaffs_PruneWorker(dev, tn->internal[i],
+ level - 1,
+ (i == 0) ? del0 : 1);
+ }
- if (tn->internal[i]) {
- hasData++;
+ if (tn->internal[i])
+ hasData++;
}
- }
+ } else {
+ int tnodeSize_u32 = yaffs_CalcTnodeSize(dev)/sizeof(__u32);
+ __u32 *map = (__u32 *)tn;
+
+ for(i = 0; !hasData && i < tnodeSize_u32; i++){
+ if(map[i])
+ hasData++;
+ }
+ }
if (hasData == 0 && del0) {
/* Free and return NULL */
}
-static int yaffs_PruneFileStructure(yaffs_Device * dev,
- yaffs_FileStructure * fStruct)
+static int yaffs_PruneFileStructure(yaffs_Device *dev,
+ yaffs_FileStructure *fStruct)
{
int i;
int hasData;
/* Now we have a tree with all the non-zero branches NULL but the height
* is the same as it was.
* Let's see if we can trim internal tnodes to shorten the tree.
- * We can do this if only the 0th element in the tnode is in use
+ * We can do this if only the 0th element in the tnode is in use
* (ie all the non-zero are NULL)
*/
hasData = 0;
for (i = 1; i < YAFFS_NTNODES_INTERNAL; i++) {
- if (tn->internal[i]) {
+ if (tn->internal[i])
hasData++;
- }
}
if (!hasData) {
/* yaffs_CreateFreeObjects creates a bunch more objects and
* adds them to the object free list.
*/
-static int yaffs_CreateFreeObjects(yaffs_Device * dev, int nObjects)
+static int yaffs_CreateFreeObjects(yaffs_Device *dev, int nObjects)
{
int i;
yaffs_Object *newObjects;
/* make these things */
newObjects = YMALLOC(nObjects * sizeof(yaffs_Object));
+ list = YMALLOC(sizeof(yaffs_ObjectList));
- if (!newObjects) {
+ if (!newObjects || !list) {
+ if (newObjects){
+ YFREE(newObjects);
+ newObjects = NULL;
+ }
+ if (list){
+ YFREE(list);
+ list = NULL;
+ }
T(YAFFS_TRACE_ALLOCATE,
(TSTR("yaffs: Could not allocate more objects" TENDSTR)));
return YAFFS_FAIL;
}
-
+
/* Hook them into the free list */
for (i = 0; i < nObjects - 1; i++) {
newObjects[i].siblings.next =
- (struct list_head *)(&newObjects[i + 1]);
+ (struct ylist_head *)(&newObjects[i + 1]);
}
newObjects[nObjects - 1].siblings.next = (void *)dev->freeObjects;
/* Now add this bunch of Objects to a list for freeing up. */
- list = YMALLOC(sizeof(yaffs_ObjectList));
- if (!list) {
- T(YAFFS_TRACE_ALLOCATE,
- (TSTR("Could not add objects to management list" TENDSTR)));
- } else {
- list->objects = newObjects;
- list->next = dev->allocatedObjectList;
- dev->allocatedObjectList = list;
- }
+ list->objects = newObjects;
+ list->next = dev->allocatedObjectList;
+ dev->allocatedObjectList = list;
return YAFFS_OK;
}
/* AllocateEmptyObject gets us a clean Object. Tries to make allocate more if we run out */
-static yaffs_Object *yaffs_AllocateEmptyObject(yaffs_Device * dev)
+static yaffs_Object *yaffs_AllocateEmptyObject(yaffs_Device *dev)
{
yaffs_Object *tn = NULL;
+#ifdef CONFIG_YAFFS_VALGRIND_TEST
+ tn = YMALLOC(sizeof(yaffs_Object));
+ if(tn)
+ dev->nObjectsCreated++;
+#else
/* If there are none left make more */
- if (!dev->freeObjects) {
+ if (!dev->freeObjects)
yaffs_CreateFreeObjects(dev, YAFFS_ALLOCATION_NOBJECTS);
- }
if (dev->freeObjects) {
tn = dev->freeObjects;
dev->freeObjects =
- (yaffs_Object *) (dev->freeObjects->siblings.next);
+ (yaffs_Object *) (dev->freeObjects->siblings.next);
dev->nFreeObjects--;
-
+ }
+#endif
+ if (tn) {
/* Now sweeten it up... */
memset(tn, 0, sizeof(yaffs_Object));
+ tn->beingCreated = 1;
+
tn->myDev = dev;
- tn->chunkId = -1;
+ tn->hdrChunk = 0;
tn->variantType = YAFFS_OBJECT_TYPE_UNKNOWN;
- INIT_LIST_HEAD(&(tn->hardLinks));
- INIT_LIST_HEAD(&(tn->hashLink));
- INIT_LIST_HEAD(&tn->siblings);
+ YINIT_LIST_HEAD(&(tn->hardLinks));
+ YINIT_LIST_HEAD(&(tn->hashLink));
+ YINIT_LIST_HEAD(&tn->siblings);
+
+
+ /* Now make the directory sane */
+ if (dev->rootDir) {
+ tn->parent = dev->rootDir;
+ ylist_add(&(tn->siblings), &dev->rootDir->variant.directoryVariant.children);
+ }
/* Add it to the lost and found directory.
* NB Can't put root or lostNFound in lostNFound so
* check if lostNFound exists first
*/
- if (dev->lostNFoundDir) {
+ if (dev->lostNFoundDir)
yaffs_AddObjectToDirectory(dev->lostNFoundDir, tn);
- }
+
+ tn->beingCreated = 0;
}
+ dev->nCheckpointBlocksRequired = 0; /* force recalculation*/
+
return tn;
}
-static yaffs_Object *yaffs_CreateFakeDirectory(yaffs_Device * dev, int number,
+static yaffs_Object *yaffs_CreateFakeDirectory(yaffs_Device *dev, int number,
__u32 mode)
{
yaffs_Object *obj =
yaffs_CreateNewObject(dev, number, YAFFS_OBJECT_TYPE_DIRECTORY);
if (obj) {
- obj->fake = 1; /* it is fake so it has no NAND presence... */
+ obj->fake = 1; /* it is fake so it might have no NAND presence... */
obj->renameAllowed = 0; /* ... and we're not allowed to rename it... */
obj->unlinkAllowed = 0; /* ... or unlink it */
obj->deleted = 0;
obj->unlinked = 0;
obj->yst_mode = mode;
obj->myDev = dev;
- obj->chunkId = 0; /* Not a valid chunk. */
+ obj->hdrChunk = 0; /* Not a valid chunk. */
}
return obj;
}
-static void yaffs_UnhashObject(yaffs_Object * tn)
+static void yaffs_UnhashObject(yaffs_Object *tn)
{
int bucket;
yaffs_Device *dev = tn->myDev;
/* If it is still linked into the bucket list, free from the list */
- if (!list_empty(&tn->hashLink)) {
- list_del_init(&tn->hashLink);
+ if (!ylist_empty(&tn->hashLink)) {
+ ylist_del_init(&tn->hashLink);
bucket = yaffs_HashFunction(tn->objectId);
dev->objectBucket[bucket].count--;
}
-
}
/* FreeObject frees up a Object and puts it back on the free list */
-static void yaffs_FreeObject(yaffs_Object * tn)
+static void yaffs_FreeObject(yaffs_Object *tn)
{
-
yaffs_Device *dev = tn->myDev;
-#ifdef __KERNEL__
+ T(YAFFS_TRACE_OS, (TSTR("FreeObject %p inode %p"TENDSTR), tn, tn->myInode));
+
+ if (!tn)
+ YBUG();
+ if (tn->parent)
+ YBUG();
+ if (!ylist_empty(&tn->siblings))
+ YBUG();
+
+
if (tn->myInode) {
/* We're still hooked up to a cached inode.
* Don't delete now, but mark for later deletion
tn->deferedFree = 1;
return;
}
-#endif
yaffs_UnhashObject(tn);
+#ifdef CONFIG_YAFFS_VALGRIND_TEST
+ YFREE(tn);
+ dev->nObjectsCreated--;
+ tn = NULL;
+#else
/* Link into the free list. */
- tn->siblings.next = (struct list_head *)(dev->freeObjects);
+ tn->siblings.next = (struct ylist_head *)(dev->freeObjects);
dev->freeObjects = tn;
dev->nFreeObjects++;
+#endif
+ dev->nCheckpointBlocksRequired = 0; /* force recalculation*/
}
-#ifdef __KERNEL__
-void yaffs_HandleDeferedFree(yaffs_Object * obj)
+void yaffs_HandleDeferedFree(yaffs_Object *obj)
{
- if (obj->deferedFree) {
+ if (obj->deferedFree)
yaffs_FreeObject(obj);
- }
}
-#endif
-static void yaffs_DeinitialiseObjects(yaffs_Device * dev)
+static void yaffs_DeinitialiseObjects(yaffs_Device *dev)
{
/* Free the list of allocated Objects */
dev->freeObjects = NULL;
dev->nFreeObjects = 0;
+ dev->nObjectsCreated = 0;
}
-static void yaffs_InitialiseObjects(yaffs_Device * dev)
+static void yaffs_InitialiseObjects(yaffs_Device *dev)
{
int i;
dev->nFreeObjects = 0;
for (i = 0; i < YAFFS_NOBJECT_BUCKETS; i++) {
- INIT_LIST_HEAD(&dev->objectBucket[i].list);
+ YINIT_LIST_HEAD(&dev->objectBucket[i].list);
dev->objectBucket[i].count = 0;
}
-
}
-static int yaffs_FindNiceObjectBucket(yaffs_Device * dev)
+static int yaffs_FindNiceObjectBucket(yaffs_Device *dev)
{
- static int x = 0;
int i;
int l = 999;
int lowest = 999999;
- /* First let's see if we can find one that's empty. */
-
- for (i = 0; i < 10 && lowest > 0; i++) {
- x++;
- x %= YAFFS_NOBJECT_BUCKETS;
- if (dev->objectBucket[x].count < lowest) {
- lowest = dev->objectBucket[x].count;
- l = x;
- }
-
- }
- /* If we didn't find an empty list, then try
- * looking a bit further for a short one
+ /* Search for the shortest list or one that
+ * isn't too long.
*/
- for (i = 0; i < 10 && lowest > 3; i++) {
- x++;
- x %= YAFFS_NOBJECT_BUCKETS;
- if (dev->objectBucket[x].count < lowest) {
- lowest = dev->objectBucket[x].count;
- l = x;
+ for (i = 0; i < 10 && lowest > 4; i++) {
+ dev->bucketFinder++;
+ dev->bucketFinder %= YAFFS_NOBJECT_BUCKETS;
+ if (dev->objectBucket[dev->bucketFinder].count < lowest) {
+ lowest = dev->objectBucket[dev->bucketFinder].count;
+ l = dev->bucketFinder;
}
}
return l;
}
-static int yaffs_CreateNewObjectNumber(yaffs_Device * dev)
+static int yaffs_CreateNewObjectNumber(yaffs_Device *dev)
{
int bucket = yaffs_FindNiceObjectBucket(dev);
*/
int found = 0;
- struct list_head *i;
+ struct ylist_head *i;
__u32 n = (__u32) bucket;
found = 1;
n += YAFFS_NOBJECT_BUCKETS;
if (1 || dev->objectBucket[bucket].count > 0) {
- list_for_each(i, &dev->objectBucket[bucket].list) {
+ ylist_for_each(i, &dev->objectBucket[bucket].list) {
/* If there is already one in the list */
- if (i
- && list_entry(i, yaffs_Object,
- hashLink)->objectId == n) {
+ if (i && ylist_entry(i, yaffs_Object,
+ hashLink)->objectId == n) {
found = 0;
}
}
}
}
-
return n;
}
-static void yaffs_HashObject(yaffs_Object * in)
+static void yaffs_HashObject(yaffs_Object *in)
{
int bucket = yaffs_HashFunction(in->objectId);
yaffs_Device *dev = in->myDev;
- list_add(&in->hashLink, &dev->objectBucket[bucket].list);
+ ylist_add(&in->hashLink, &dev->objectBucket[bucket].list);
dev->objectBucket[bucket].count++;
-
}
-yaffs_Object *yaffs_FindObjectByNumber(yaffs_Device * dev, __u32 number)
+yaffs_Object *yaffs_FindObjectByNumber(yaffs_Device *dev, __u32 number)
{
int bucket = yaffs_HashFunction(number);
- struct list_head *i;
+ struct ylist_head *i;
yaffs_Object *in;
- list_for_each(i, &dev->objectBucket[bucket].list) {
+ ylist_for_each(i, &dev->objectBucket[bucket].list) {
/* Look if it is in the list */
if (i) {
- in = list_entry(i, yaffs_Object, hashLink);
+ in = ylist_entry(i, yaffs_Object, hashLink);
if (in->objectId == number) {
-#ifdef __KERNEL__
+
/* Don't tell the VFS about this one if it is defered free */
if (in->deferedFree)
return NULL;
-#endif
return in;
}
return NULL;
}
-yaffs_Object *yaffs_CreateNewObject(yaffs_Device * dev, int number,
+yaffs_Object *yaffs_CreateNewObject(yaffs_Device *dev, int number,
yaffs_ObjectType type)
{
+ yaffs_Object *theObject=NULL;
+ yaffs_Tnode *tn = NULL;
- yaffs_Object *theObject;
-
- if (number < 0) {
+ if (number < 0)
number = yaffs_CreateNewObjectNumber(dev);
+
+ if (type == YAFFS_OBJECT_TYPE_FILE) {
+ tn = yaffs_GetTnode(dev);
+ if (!tn)
+ return NULL;
}
theObject = yaffs_AllocateEmptyObject(dev);
+ if (!theObject){
+ if(tn)
+ yaffs_FreeTnode(dev,tn);
+ return NULL;
+ }
+
if (theObject) {
theObject->fake = 0;
theObject->variant.fileVariant.scannedFileSize = 0;
theObject->variant.fileVariant.shrinkSize = 0xFFFFFFFF; /* max __u32 */
theObject->variant.fileVariant.topLevel = 0;
- theObject->variant.fileVariant.top =
- yaffs_GetTnode(dev);
+ theObject->variant.fileVariant.top = tn;
break;
case YAFFS_OBJECT_TYPE_DIRECTORY:
- INIT_LIST_HEAD(&theObject->variant.directoryVariant.
- children);
+ YINIT_LIST_HEAD(&theObject->variant.directoryVariant.
+ children);
break;
case YAFFS_OBJECT_TYPE_SYMLINK:
case YAFFS_OBJECT_TYPE_HARDLINK:
return theObject;
}
-static yaffs_Object *yaffs_FindOrCreateObjectByNumber(yaffs_Device * dev,
+static yaffs_Object *yaffs_FindOrCreateObjectByNumber(yaffs_Device *dev,
int number,
yaffs_ObjectType type)
{
yaffs_Object *theObject = NULL;
- if (number > 0) {
+ if (number > 0)
theObject = yaffs_FindObjectByNumber(dev, number);
- }
- if (!theObject) {
+ if (!theObject)
theObject = yaffs_CreateNewObject(dev, number, type);
- }
return theObject;
}
-
-static YCHAR *yaffs_CloneString(const YCHAR * str)
+
+static YCHAR *yaffs_CloneString(const YCHAR *str)
{
YCHAR *newStr = NULL;
+ int len;
- if (str && *str) {
- newStr = YMALLOC((yaffs_strlen(str) + 1) * sizeof(YCHAR));
- yaffs_strcpy(newStr, str);
- }
+ if (!str)
+ str = _Y("");
+ len = yaffs_strnlen(str,YAFFS_MAX_ALIAS_LENGTH);
+ newStr = YMALLOC((len + 1) * sizeof(YCHAR));
+ if (newStr){
+ yaffs_strncpy(newStr, str,len);
+ newStr[len] = 0;
+ }
return newStr;
}
/*
* Mknod (create) a new object.
* equivalentObject only has meaning for a hard link;
- * aliasString only has meaning for a sumlink.
+ * aliasString only has meaning for a symlink.
* rdev only has meaning for devices (a subset of special objects)
*/
-
+
static yaffs_Object *yaffs_MknodObject(yaffs_ObjectType type,
- yaffs_Object * parent,
- const YCHAR * name,
+ yaffs_Object *parent,
+ const YCHAR *name,
__u32 mode,
__u32 uid,
__u32 gid,
- yaffs_Object * equivalentObject,
- const YCHAR * aliasString, __u32 rdev)
+ yaffs_Object *equivalentObject,
+ const YCHAR *aliasString, __u32 rdev)
{
yaffs_Object *in;
+ YCHAR *str = NULL;
yaffs_Device *dev = parent->myDev;
/* Check if the entry exists. If it does then fail the call since we don't want a dup.*/
- if (yaffs_FindObjectByName(parent, name)) {
+ if (yaffs_FindObjectByName(parent, name))
return NULL;
+
+ if (type == YAFFS_OBJECT_TYPE_SYMLINK) {
+ str = yaffs_CloneString(aliasString);
+ if (!str)
+ return NULL;
}
in = yaffs_CreateNewObject(dev, -1, type);
+ if (!in){
+ if(str)
+ YFREE(str);
+ return NULL;
+ }
+
+
+
+
+
if (in) {
- in->chunkId = -1;
+ in->hdrChunk = 0;
in->valid = 1;
in->variantType = type;
switch (type) {
case YAFFS_OBJECT_TYPE_SYMLINK:
- in->variant.symLinkVariant.alias =
- yaffs_CloneString(aliasString);
+ in->variant.symLinkVariant.alias = str;
break;
case YAFFS_OBJECT_TYPE_HARDLINK:
in->variant.hardLinkVariant.equivalentObject =
- equivalentObject;
+ equivalentObject;
in->variant.hardLinkVariant.equivalentObjectId =
- equivalentObject->objectId;
- list_add(&in->hardLinks, &equivalentObject->hardLinks);
+ equivalentObject->objectId;
+ ylist_add(&in->hardLinks, &equivalentObject->hardLinks);
break;
- case YAFFS_OBJECT_TYPE_FILE:
+ case YAFFS_OBJECT_TYPE_FILE:
case YAFFS_OBJECT_TYPE_DIRECTORY:
case YAFFS_OBJECT_TYPE_SPECIAL:
case YAFFS_OBJECT_TYPE_UNKNOWN:
if (yaffs_UpdateObjectHeader(in, name, 0, 0, 0) < 0) {
/* Could not create the object header, fail the creation */
- yaffs_DestroyObject(in);
+ yaffs_DeleteObject(in);
in = NULL;
}
+ yaffs_UpdateParent(parent);
}
return in;
}
-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)
{
return yaffs_MknodObject(YAFFS_OBJECT_TYPE_FILE, parent, name, mode,
- uid, gid, NULL, NULL, 0);
+ uid, gid, NULL, NULL, 0);
}
-yaffs_Object *yaffs_MknodDirectory(yaffs_Object * parent, const YCHAR * name,
- __u32 mode, __u32 uid, __u32 gid)
+yaffs_Object *yaffs_MknodDirectory(yaffs_Object *parent, const YCHAR *name,
+ __u32 mode, __u32 uid, __u32 gid)
{
return yaffs_MknodObject(YAFFS_OBJECT_TYPE_DIRECTORY, parent, name,
mode, uid, gid, NULL, NULL, 0);
}
-yaffs_Object *yaffs_MknodSpecial(yaffs_Object * parent, const YCHAR * name,
- __u32 mode, __u32 uid, __u32 gid, __u32 rdev)
+yaffs_Object *yaffs_MknodSpecial(yaffs_Object *parent, const YCHAR *name,
+ __u32 mode, __u32 uid, __u32 gid, __u32 rdev)
{
return yaffs_MknodObject(YAFFS_OBJECT_TYPE_SPECIAL, parent, name, mode,
uid, gid, NULL, NULL, rdev);
}
-yaffs_Object *yaffs_MknodSymLink(yaffs_Object * parent, const YCHAR * name,
- __u32 mode, __u32 uid, __u32 gid,
- const YCHAR * alias)
+yaffs_Object *yaffs_MknodSymLink(yaffs_Object *parent, const YCHAR *name,
+ __u32 mode, __u32 uid, __u32 gid,
+ const YCHAR *alias)
{
return yaffs_MknodObject(YAFFS_OBJECT_TYPE_SYMLINK, parent, name, mode,
- uid, gid, NULL, alias, 0);
+ uid, gid, NULL, alias, 0);
}
/* yaffs_Link returns the object id of the equivalent object.*/
-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)
{
/* Get the real object in case we were fed a hard link as an equivalent object */
equivalentObject = yaffs_GetEquivalentObject(equivalentObject);
}
-static int yaffs_ChangeObjectName(yaffs_Object * obj, yaffs_Object * newDir,
- const YCHAR * newName, int force, int shadows)
+static int yaffs_ChangeObjectName(yaffs_Object *obj, yaffs_Object *newDir,
+ const YCHAR *newName, int force, int shadows)
{
int unlinkOp;
int deleteOp;
yaffs_Object *existingTarget;
- if (newDir == NULL) {
+ if (newDir == NULL)
newDir = obj->parent; /* use the old directory */
- }
if (newDir->variantType != YAFFS_OBJECT_TYPE_DIRECTORY) {
T(YAFFS_TRACE_ALWAYS,
(TSTR
- ("tragendy: yaffs_ChangeObjectName: newDir is not a directory"
+ ("tragedy: yaffs_ChangeObjectName: newDir is not a directory"
TENDSTR)));
YBUG();
}
-
+
/* TODO: Do we need this different handling for YAFFS2 and YAFFS1?? */
- if (obj->myDev->isYaffs2) {
+ if (obj->myDev->param.isYaffs2)
unlinkOp = (newDir == obj->myDev->unlinkedDir);
- } else {
+ else
unlinkOp = (newDir == obj->myDev->unlinkedDir
&& obj->variantType == YAFFS_OBJECT_TYPE_FILE);
- }
deleteOp = (newDir == obj->myDev->deletedDir);
existingTarget = yaffs_FindObjectByName(newDir, newName);
- /* If the object is a file going into the unlinked directory,
+ /* If the object is a file going into the unlinked directory,
* then it is OK to just stuff it in since duplicate names are allowed.
- * else only proceed if the new name does not exist and if we're putting
+ * else only proceed if the new name does not exist and if we're putting
* it into a directory.
*/
if ((unlinkOp ||
obj->unlinked = 1;
/* If it is a deletion then we mark it as a shrink for gc purposes. */
- if (yaffs_UpdateObjectHeader(obj, newName, 0, deleteOp, shadows)>= 0)
+ if (yaffs_UpdateObjectHeader(obj, newName, 0, deleteOp, shadows) >= 0)
return YAFFS_OK;
}
return YAFFS_FAIL;
}
-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)
{
- yaffs_Object *obj;
- yaffs_Object *existingTarget;
+ yaffs_Object *obj = NULL;
+ yaffs_Object *existingTarget = NULL;
int force = 0;
+ int result;
+ yaffs_Device *dev;
+
+
+ if (!oldDir || oldDir->variantType != YAFFS_OBJECT_TYPE_DIRECTORY)
+ YBUG();
+ if (!newDir || newDir->variantType != YAFFS_OBJECT_TYPE_DIRECTORY)
+ YBUG();
+
+ dev = oldDir->myDev;
#ifdef CONFIG_YAFFS_CASE_INSENSITIVE
/* Special case for case insemsitive systems (eg. WinCE).
* While look-up is case insensitive, the name isn't.
* Therefore we might want to change x.txt to X.txt
*/
- if (oldDir == newDir && yaffs_strcmp(oldName, newName) == 0) {
+ if (oldDir == newDir && yaffs_strcmp(oldName, newName) == 0)
force = 1;
- }
#endif
+ if(yaffs_strnlen(newName,YAFFS_MAX_NAME_LENGTH+1) > YAFFS_MAX_NAME_LENGTH)
+ /* ENAMETOOLONG */
+ return YAFFS_FAIL;
+
obj = yaffs_FindObjectByName(oldDir, oldName);
- /* Check new name to long. */
- if (obj->variantType == YAFFS_OBJECT_TYPE_SYMLINK &&
- yaffs_strlen(newName) > YAFFS_MAX_ALIAS_LENGTH)
- /* ENAMETOOLONG */
- return YAFFS_FAIL;
- else if (obj->variantType != YAFFS_OBJECT_TYPE_SYMLINK &&
- yaffs_strlen(newName) > YAFFS_MAX_NAME_LENGTH)
- /* ENAMETOOLONG */
- return YAFFS_FAIL;
if (obj && obj->renameAllowed) {
existingTarget = yaffs_FindObjectByName(newDir, newName);
if (existingTarget &&
- existingTarget->variantType == YAFFS_OBJECT_TYPE_DIRECTORY &&
- !list_empty(&existingTarget->variant.directoryVariant.children)) {
+ existingTarget->variantType == YAFFS_OBJECT_TYPE_DIRECTORY &&
+ !ylist_empty(&existingTarget->variant.directoryVariant.children)) {
/* There is a target that is a non-empty directory, so we fail */
return YAFFS_FAIL; /* EEXIST or ENOTEMPTY */
} else if (existingTarget && existingTarget != obj) {
- /* Nuke the target first, using shadowing,
- * but only if it isn't the same object
+ /* Nuke the target first, using shadowing,
+ * but only if it isn't the same object.
+ *
+ * Note we must disable gc otherwise it can mess up the shadowing.
+ *
*/
+ dev->isDoingGC=1;
yaffs_ChangeObjectName(obj, newDir, newName, force,
- existingTarget->objectId);
+ existingTarget->objectId);
+ existingTarget->isShadowed = 1;
yaffs_UnlinkObject(existingTarget);
+ dev->isDoingGC=0;
}
- return yaffs_ChangeObjectName(obj, newDir, newName, 1, 0);
+ result = yaffs_ChangeObjectName(obj, newDir, newName, 1, 0);
+
+ yaffs_UpdateParent(oldDir);
+ if(newDir != oldDir)
+ yaffs_UpdateParent(newDir);
+
+ return result;
}
return YAFFS_FAIL;
}
/*------------------------- Block Management and Page Allocation ----------------*/
-static int yaffs_InitialiseBlocks(yaffs_Device * dev)
+static int yaffs_InitialiseBlocks(yaffs_Device *dev)
{
int nBlocks = dev->internalEndBlock - dev->internalStartBlock + 1;
-
+
+ dev->blockInfo = NULL;
+ dev->chunkBits = NULL;
+
dev->allocationBlock = -1; /* force it to get a new one */
- /* Todo we're assuming the malloc will pass. */
+ /* If the first allocation strategy fails, thry the alternate one */
dev->blockInfo = YMALLOC(nBlocks * sizeof(yaffs_BlockInfo));
- if(!dev->blockInfo){
+ if (!dev->blockInfo) {
dev->blockInfo = YMALLOC_ALT(nBlocks * sizeof(yaffs_BlockInfo));
dev->blockInfoAlt = 1;
- }
- else
+ } else
dev->blockInfoAlt = 0;
-
- /* Set up dynamic blockinfo stuff. */
- dev->chunkBitmapStride = (dev->nChunksPerBlock + 7) / 8; /* round up bytes */
- dev->chunkBits = YMALLOC(dev->chunkBitmapStride * nBlocks);
- if(!dev->chunkBits){
- dev->chunkBits = YMALLOC_ALT(dev->chunkBitmapStride * nBlocks);
- dev->chunkBitsAlt = 1;
+
+ if (dev->blockInfo) {
+ /* Set up dynamic blockinfo stuff. */
+ dev->chunkBitmapStride = (dev->param.nChunksPerBlock + 7) / 8; /* round up bytes */
+ dev->chunkBits = YMALLOC(dev->chunkBitmapStride * nBlocks);
+ if (!dev->chunkBits) {
+ dev->chunkBits = YMALLOC_ALT(dev->chunkBitmapStride * nBlocks);
+ dev->chunkBitsAlt = 1;
+ } else
+ dev->chunkBitsAlt = 0;
}
- else
- dev->chunkBitsAlt = 0;
-
+
if (dev->blockInfo && dev->chunkBits) {
memset(dev->blockInfo, 0, nBlocks * sizeof(yaffs_BlockInfo));
memset(dev->chunkBits, 0, dev->chunkBitmapStride * nBlocks);
}
return YAFFS_FAIL;
-
}
-static void yaffs_DeinitialiseBlocks(yaffs_Device * dev)
+static void yaffs_DeinitialiseBlocks(yaffs_Device *dev)
{
- if(dev->blockInfoAlt)
+ if (dev->blockInfoAlt && dev->blockInfo)
YFREE_ALT(dev->blockInfo);
- else
+ else if (dev->blockInfo)
YFREE(dev->blockInfo);
+
dev->blockInfoAlt = 0;
dev->blockInfo = NULL;
-
- if(dev->chunkBitsAlt)
+
+ if (dev->chunkBitsAlt && dev->chunkBits)
YFREE_ALT(dev->chunkBits);
- else
+ else if (dev->chunkBits)
YFREE(dev->chunkBits);
dev->chunkBitsAlt = 0;
dev->chunkBits = NULL;
}
-static int yaffs_BlockNotDisqualifiedFromGC(yaffs_Device * dev,
- yaffs_BlockInfo * bi)
+static int yaffs_BlockNotDisqualifiedFromGC(yaffs_Device *dev,
+ yaffs_BlockInfo *bi)
{
int i;
__u32 seq;
yaffs_BlockInfo *b;
- if (!dev->isYaffs2)
+ if (!dev->param.isYaffs2)
return 1; /* disqualification only applies to yaffs2. */
if (!bi->hasShrinkHeader)
seq = dev->sequenceNumber;
for (i = dev->internalStartBlock; i <= dev->internalEndBlock;
- i++) {
+ i++) {
b = yaffs_GetBlockInfo(dev, i);
if (b->blockState == YAFFS_BLOCK_STATE_FULL &&
(b->pagesInUse - b->softDeletions) <
- dev->nChunksPerBlock && b->sequenceNumber < seq) {
+ dev->param.nChunksPerBlock && b->sequenceNumber < seq) {
seq = b->sequenceNumber;
}
}
* discarded pages.
*/
return (bi->sequenceNumber <= dev->oldestDirtySequence);
+}
+
+/*
+ * yaffs_FindRefreshBlock()
+ * periodically finds the oldest full block by sequence number for refreshing.
+ * Only for yaffs2.
+ */
+static __u32 yaffs_FindRefreshBlock(yaffs_Device *dev)
+{
+ __u32 b ;
+
+ __u32 oldest = 0;
+ __u32 oldestSequence = 0;
+
+ yaffs_BlockInfo *bi;
+
+ /*
+ * If refresh period < 10 then refreshing is disabled.
+ */
+ if(dev->param.refreshPeriod < 10 ||
+ !dev->param.isYaffs2)
+ return oldest;
+
+ /*
+ * Fix broken values.
+ */
+ if(dev->refreshSkip > dev->param.refreshPeriod)
+ dev->refreshSkip = dev->param.refreshPeriod;
+
+ if(dev->refreshSkip > 0){
+ dev->refreshSkip--;
+ return oldest;
+ }
+
+ /*
+ * Refresh skip is now zero.
+ * We'll do a refresh this time around....
+ * Update the refresh skip and find the oldest block.
+ */
+ dev->refreshSkip = dev->param.refreshPeriod;
+ dev->refreshCount++;
+
+ for (b = dev->internalStartBlock; b <=dev->internalEndBlock; b++){
+
+ bi = yaffs_GetBlockInfo(dev, b);
+
+
+ if (bi->blockState == YAFFS_BLOCK_STATE_FULL){
+
+ if(oldest < 1 ||
+ bi->sequenceNumber < oldestSequence){
+ oldest = b;
+ oldestSequence = bi->sequenceNumber;
+ }
+ }
+ }
+
+ if (oldest > 0) {
+ T(YAFFS_TRACE_GC,
+ (TSTR("GC refresh count %d selected block %d with sequenceNumber %d" TENDSTR),
+ dev->refreshCount, oldest, oldestSequence));
+ }
+ return oldest;
}
-/* FindDiretiestBlock is used to select the dirtiest block (or close enough)
+/*
+ * FindDiretiestBlock is used to select the dirtiest block (or close enough)
* for garbage collection.
*/
-static int yaffs_FindBlockForGarbageCollection(yaffs_Device * dev,
- int aggressive)
+static int yaffs_FindBlockForGarbageCollection(yaffs_Device *dev,
+ int aggressive)
{
-
int b = dev->currentDirtyChecker;
int i;
int iterations;
int dirtiest = -1;
- int pagesInUse;
- int prioritised=0;
+ int pagesInUse = 0;
+ int prioritised = 0;
yaffs_BlockInfo *bi;
- static int nonAggressiveSkip = 0;
int pendingPrioritisedExist = 0;
-
+
/* First let's see if we need to grab a prioritised block */
- if(dev->hasPendingPrioritisedGCs){
- for(i = dev->internalStartBlock; i < dev->internalEndBlock && !prioritised; i++){
+ if (dev->hasPendingPrioritisedGCs) {
+ for (i = dev->internalStartBlock; i < dev->internalEndBlock && !prioritised; i++) {
bi = yaffs_GetBlockInfo(dev, i);
- if(bi->gcPrioritise) {
+ /* yaffs_VerifyBlock(dev,bi,i); */
+
+ if (bi->gcPrioritise) {
pendingPrioritisedExist = 1;
- if(bi->blockState == YAFFS_BLOCK_STATE_FULL &&
- yaffs_BlockNotDisqualifiedFromGC(dev, bi)){
+ if (bi->blockState == YAFFS_BLOCK_STATE_FULL &&
+ yaffs_BlockNotDisqualifiedFromGC(dev, bi)) {
pagesInUse = (bi->pagesInUse - bi->softDeletions);
dirtiest = i;
prioritised = 1;
}
}
}
-
- if(!pendingPrioritisedExist) /* None found, so we can clear this */
+
+ if (!pendingPrioritisedExist) /* None found, so we can clear this */
dev->hasPendingPrioritisedGCs = 0;
}
* block has only a few pages in use.
*/
- nonAggressiveSkip--;
+ dev->nonAggressiveSkip--;
- if (!aggressive && (nonAggressiveSkip > 0)) {
+ if (!aggressive && (dev->nonAggressiveSkip > 0))
return -1;
- }
- if(!prioritised)
+ if (!prioritised)
pagesInUse =
- (aggressive) ? dev->nChunksPerBlock : YAFFS_PASSIVE_GC_CHUNKS + 1;
+ (aggressive) ? dev->param.nChunksPerBlock : YAFFS_PASSIVE_GC_CHUNKS + 1;
- if (aggressive) {
+ if (aggressive)
iterations =
dev->internalEndBlock - dev->internalStartBlock + 1;
- } else {
+ else {
iterations =
dev->internalEndBlock - dev->internalStartBlock + 1;
iterations = iterations / 16;
- if (iterations > 200) {
+ if (iterations > 200)
iterations = 200;
- }
}
for (i = 0; i <= iterations && pagesInUse > 0 && !prioritised; i++) {
b++;
- if (b < dev->internalStartBlock || b > dev->internalEndBlock) {
+ if (b < dev->internalStartBlock || b > dev->internalEndBlock)
b = dev->internalStartBlock;
- }
if (b < dev->internalStartBlock || b > dev->internalEndBlock) {
T(YAFFS_TRACE_ERROR,
bi = yaffs_GetBlockInfo(dev, b);
-#if 0
- if (bi->blockState == YAFFS_BLOCK_STATE_CHECKPOINT) {
- dirtiest = b;
- pagesInUse = 0;
- }
- else
-#endif
-
if (bi->blockState == YAFFS_BLOCK_STATE_FULL &&
- (bi->pagesInUse - bi->softDeletions) < pagesInUse &&
- yaffs_BlockNotDisqualifiedFromGC(dev, bi)) {
+ (bi->pagesInUse - bi->softDeletions) < pagesInUse &&
+ yaffs_BlockNotDisqualifiedFromGC(dev, bi)) {
dirtiest = b;
pagesInUse = (bi->pagesInUse - bi->softDeletions);
}
if (dirtiest > 0) {
T(YAFFS_TRACE_GC,
(TSTR("GC Selected block %d with %d free, prioritised:%d" TENDSTR), dirtiest,
- dev->nChunksPerBlock - pagesInUse,prioritised));
+ dev->param.nChunksPerBlock - pagesInUse, prioritised));
}
dev->oldestDirtySequence = 0;
- if (dirtiest > 0) {
- nonAggressiveSkip = 4;
- }
+ if (dirtiest > 0)
+ dev->nonAggressiveSkip = 4;
return dirtiest;
}
-static void yaffs_BlockBecameDirty(yaffs_Device * dev, int blockNo)
+static void yaffs_BlockBecameDirty(yaffs_Device *dev, int blockNo)
{
yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, blockNo);
/* If the block is still healthy erase it and mark as clean.
* If the block has had a data failure, then retire it.
*/
+
+ T(YAFFS_TRACE_GC | YAFFS_TRACE_ERASE,
+ (TSTR("yaffs_BlockBecameDirty block %d state %d %s"TENDSTR),
+ blockNo, bi->blockState, (bi->needsRetiring) ? "needs retiring" : ""));
+
bi->blockState = YAFFS_BLOCK_STATE_DIRTY;
if (!bi->needsRetiring) {
}
}
- if (erasedOk && (yaffs_traceMask & YAFFS_TRACE_ERASE)) {
+ if (erasedOk &&
+ ((yaffs_traceMask & YAFFS_TRACE_ERASE) || !yaffs_SkipVerification(dev))) {
int i;
- for (i = 0; i < dev->nChunksPerBlock; i++) {
+ for (i = 0; i < dev->param.nChunksPerBlock; i++) {
if (!yaffs_CheckChunkErased
- (dev, blockNo * dev->nChunksPerBlock + i)) {
+ (dev, blockNo * dev->param.nChunksPerBlock + i)) {
T(YAFFS_TRACE_ERROR,
(TSTR
(">>Block %d erasure supposedly OK, but chunk %d not erased"
if (erasedOk) {
/* Clean it up... */
bi->blockState = YAFFS_BLOCK_STATE_EMPTY;
+ bi->sequenceNumber = 0;
dev->nErasedBlocks++;
bi->pagesInUse = 0;
bi->softDeletions = 0;
T(YAFFS_TRACE_ERASE,
(TSTR("Erased block %d" TENDSTR), blockNo));
} else {
- dev->nFreeChunks -= dev->nChunksPerBlock; /* We lost a block of free space */
+ dev->nFreeChunks -= dev->param.nChunksPerBlock; /* We lost a block of free space */
yaffs_RetireBlock(dev, blockNo);
T(YAFFS_TRACE_ERROR | YAFFS_TRACE_BAD_BLOCKS,
}
}
-static int yaffs_FindBlockForAllocation(yaffs_Device * dev)
+static int yaffs_FindBlockForAllocation(yaffs_Device *dev)
{
int i;
* Can't get space to gc
*/
T(YAFFS_TRACE_ERROR,
- (TSTR("yaffs tragedy: no more eraased blocks" TENDSTR)));
+ (TSTR("yaffs tragedy: no more erased blocks" TENDSTR)));
return -1;
}
-
+
/* Find an empty block. */
for (i = dev->internalStartBlock; i <= dev->internalEndBlock; i++) {
T(YAFFS_TRACE_ALWAYS,
(TSTR
- ("yaffs tragedy: no more eraased blocks, but there should have been %d"
+ ("yaffs tragedy: no more erased blocks, but there should have been %d"
TENDSTR), dev->nErasedBlocks));
return -1;
}
-// Check if there's space to allocate...
-// Thinks.... do we need top make this ths same as yaffs_GetFreeChunks()?
-static int yaffs_CheckSpaceForAllocation(yaffs_Device * dev)
+
+static int yaffs_CalcCheckpointBlocksRequired(yaffs_Device *dev)
+{
+ if (!dev->nCheckpointBlocksRequired &&
+ dev->param.isYaffs2) {
+ /* Not a valid value so recalculate */
+ int nBytes = 0;
+ int nBlocks;
+ int devBlocks = (dev->param.endBlock - dev->param.startBlock + 1);
+ int tnodeSize = yaffs_CalcTnodeSize(dev);
+
+ nBytes += sizeof(yaffs_CheckpointValidity);
+ nBytes += sizeof(yaffs_CheckpointDevice);
+ nBytes += devBlocks * sizeof(yaffs_BlockInfo);
+ nBytes += devBlocks * dev->chunkBitmapStride;
+ nBytes += (sizeof(yaffs_CheckpointObject) + sizeof(__u32)) * (dev->nObjectsCreated - dev->nFreeObjects);
+ nBytes += (tnodeSize + sizeof(__u32)) * (dev->nTnodesCreated - dev->nFreeTnodes);
+ nBytes += sizeof(yaffs_CheckpointValidity);
+ nBytes += sizeof(__u32); /* checksum*/
+
+ /* Round up and add 2 blocks to allow for some bad blocks, so add 3 */
+
+ nBlocks = (nBytes/(dev->nDataBytesPerChunk * dev->param.nChunksPerBlock)) + 3;
+
+ dev->nCheckpointBlocksRequired = nBlocks;
+ }
+
+ return dev->nCheckpointBlocksRequired;
+}
+
+/*
+ * Check if there's space to allocate...
+ * Thinks.... do we need top make this ths same as yaffs_GetFreeChunks()?
+ */
+static int yaffs_CheckSpaceForAllocation(yaffs_Device *dev)
{
int reservedChunks;
- int reservedBlocks = dev->nReservedBlocks;
+ int reservedBlocks = dev->param.nReservedBlocks;
int checkpointBlocks;
-
- checkpointBlocks = dev->nCheckpointReservedBlocks - dev->blocksInCheckpoint;
- if(checkpointBlocks < 0)
+
+ if (dev->param.isYaffs2) {
+ checkpointBlocks = yaffs_CalcCheckpointBlocksRequired(dev) -
+ dev->blocksInCheckpoint;
+ if (checkpointBlocks < 0)
+ checkpointBlocks = 0;
+ } else {
checkpointBlocks = 0;
-
- reservedChunks = ((reservedBlocks + checkpointBlocks) * dev->nChunksPerBlock);
-
+ }
+
+ reservedChunks = ((reservedBlocks + checkpointBlocks) * dev->param.nChunksPerBlock);
+
return (dev->nFreeChunks > reservedChunks);
}
-static int yaffs_AllocateChunk(yaffs_Device * dev, int useReserve, yaffs_BlockInfo **blockUsedPtr)
+static int yaffs_AllocateChunk(yaffs_Device *dev, int useReserve,
+ yaffs_BlockInfo **blockUsedPtr)
{
int retVal;
yaffs_BlockInfo *bi;
return -1;
}
- if (dev->nErasedBlocks < dev->nReservedBlocks
- && dev->allocationPage == 0) {
+ if (dev->nErasedBlocks < dev->param.nReservedBlocks
+ && dev->allocationPage == 0) {
T(YAFFS_TRACE_ALLOCATE, (TSTR("Allocating reserve" TENDSTR)));
}
if (dev->allocationBlock >= 0) {
bi = yaffs_GetBlockInfo(dev, dev->allocationBlock);
- retVal = (dev->allocationBlock * dev->nChunksPerBlock) +
- dev->allocationPage;
+ retVal = (dev->allocationBlock * dev->param.nChunksPerBlock) +
+ dev->allocationPage;
bi->pagesInUse++;
yaffs_SetChunkBit(dev, dev->allocationBlock,
- dev->allocationPage);
+ dev->allocationPage);
dev->allocationPage++;
dev->nFreeChunks--;
/* If the block is full set the state to full */
- if (dev->allocationPage >= dev->nChunksPerBlock) {
+ if (dev->allocationPage >= dev->param.nChunksPerBlock) {
bi->blockState = YAFFS_BLOCK_STATE_FULL;
dev->allocationBlock = -1;
}
- if(blockUsedPtr)
+ if (blockUsedPtr)
*blockUsedPtr = bi;
-
+
return retVal;
}
-
+
T(YAFFS_TRACE_ERROR,
- (TSTR("!!!!!!!!! Allocator out !!!!!!!!!!!!!!!!!" TENDSTR)));
+ (TSTR("!!!!!!!!! Allocator out !!!!!!!!!!!!!!!!!" TENDSTR)));
return -1;
}
-static int yaffs_GetErasedChunks(yaffs_Device * dev)
+static int yaffs_GetErasedChunks(yaffs_Device *dev)
{
int n;
- n = dev->nErasedBlocks * dev->nChunksPerBlock;
+ n = dev->nErasedBlocks * dev->param.nChunksPerBlock;
- if (dev->allocationBlock > 0) {
- n += (dev->nChunksPerBlock - dev->allocationPage);
- }
+ if (dev->allocationBlock > 0)
+ n += (dev->param.nChunksPerBlock - dev->allocationPage);
return n;
}
-static int yaffs_GarbageCollectBlock(yaffs_Device * dev, int block)
+/*
+ * yaffs_SkipRestOfBlock() skips over the rest of the allocation block
+ * if we don't want to write to it.
+ */
+static void yaffs_SkipRestOfBlock(yaffs_Device *dev)
+{
+ if(dev->allocationBlock > 0){
+ yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, dev->allocationBlock);
+ if(bi->blockState == YAFFS_BLOCK_STATE_ALLOCATING){
+ bi->blockState = YAFFS_BLOCK_STATE_FULL;
+ dev->allocationBlock = -1;
+ }
+ }
+}
+
+
+static int yaffs_GarbageCollectBlock(yaffs_Device *dev, int block,
+ int wholeBlock)
{
int oldChunk;
int newChunk;
- int chunkInBlock;
int markNAND;
int retVal = YAFFS_OK;
int cleanups = 0;
int i;
int isCheckpointBlock;
+ int matchingChunk;
+ int maxCopies;
int chunksBefore = yaffs_GetErasedChunks(dev);
int chunksAfter;
yaffs_Object *object;
isCheckpointBlock = (bi->blockState == YAFFS_BLOCK_STATE_CHECKPOINT);
-
- bi->blockState = YAFFS_BLOCK_STATE_COLLECTING;
+
T(YAFFS_TRACE_TRACING,
- (TSTR("Collecting block %d, in use %d, shrink %d, " TENDSTR), block,
- bi->pagesInUse, bi->hasShrinkHeader));
+ (TSTR("Collecting block %d, in use %d, shrink %d, wholeBlock %d" TENDSTR),
+ block,
+ bi->pagesInUse,
+ bi->hasShrinkHeader,
+ wholeBlock));
/*yaffs_VerifyFreeChunks(dev); */
+ if(bi->blockState == YAFFS_BLOCK_STATE_FULL)
+ bi->blockState = YAFFS_BLOCK_STATE_COLLECTING;
+
bi->hasShrinkHeader = 0; /* clear the flag so that the block can erase */
/* Take off the number of soft deleted entries because
* they're going to get really deleted during GC.
*/
- dev->nFreeChunks -= bi->softDeletions;
+ if(dev->gcChunk == 0) /* first time through for this block */
+ dev->nFreeChunks -= bi->softDeletions;
dev->isDoingGC = 1;
if (isCheckpointBlock ||
- !yaffs_StillSomeChunkBits(dev, block)) {
+ !yaffs_StillSomeChunkBits(dev, block)) {
T(YAFFS_TRACE_TRACING,
- (TSTR
- ("Collecting block %d that has no chunks in use" TENDSTR),
- block));
+ (TSTR
+ ("Collecting block %d that has no chunks in use" TENDSTR),
+ block));
yaffs_BlockBecameDirty(dev, block);
} else {
__u8 *buffer = yaffs_GetTempBuffer(dev, __LINE__);
- for (chunkInBlock = 0, oldChunk = block * dev->nChunksPerBlock;
- chunkInBlock < dev->nChunksPerBlock
- && yaffs_StillSomeChunkBits(dev, block);
- chunkInBlock++, oldChunk++) {
- if (yaffs_CheckChunkBit(dev, block, chunkInBlock)) {
+ yaffs_VerifyBlock(dev, bi, block);
+
+ maxCopies = (wholeBlock) ? dev->param.nChunksPerBlock : 10;
+ oldChunk = block * dev->param.nChunksPerBlock + dev->gcChunk;
+
+ for (/* init already done */;
+ retVal == YAFFS_OK &&
+ dev->gcChunk < dev->param.nChunksPerBlock &&
+ (bi->blockState == YAFFS_BLOCK_STATE_COLLECTING) &&
+ maxCopies > 0;
+ dev->gcChunk++, oldChunk++) {
+ if (yaffs_CheckChunkBit(dev, block, dev->gcChunk)) {
/* This page is in use and might need to be copied off */
+ maxCopies--;
+
markNAND = 1;
yaffs_InitialiseTags(&tags);
T(YAFFS_TRACE_GC_DETAIL,
(TSTR
- ("Collecting page %d, %d %d %d " TENDSTR),
- chunkInBlock, tags.objectId, tags.chunkId,
+ ("Collecting chunk in block %d, %d %d %d " TENDSTR),
+ dev->gcChunk, tags.objectId, tags.chunkId,
tags.byteCount));
+ if (object && !yaffs_SkipVerification(dev)) {
+ if (tags.chunkId == 0)
+ matchingChunk = object->hdrChunk;
+ else if (object->softDeleted)
+ matchingChunk = oldChunk; /* Defeat the test */
+ else
+ matchingChunk = yaffs_FindChunkInFile(object, tags.chunkId, NULL);
+
+ if (oldChunk != matchingChunk)
+ T(YAFFS_TRACE_ERROR,
+ (TSTR("gc: page in gc mismatch: %d %d %d %d"TENDSTR),
+ oldChunk, matchingChunk, tags.objectId, tags.chunkId));
+
+ }
+
if (!object) {
T(YAFFS_TRACE_ERROR,
(TSTR
- ("page %d in gc has no object "
- TENDSTR), oldChunk));
+ ("page %d in gc has no object: %d %d %d "
+ TENDSTR), oldChunk,
+ tags.objectId, tags.chunkId, tags.byteCount));
}
- if (object && object->deleted
- && tags.chunkId != 0) {
- /* Data chunk in a deleted file, throw it away
+ if (object &&
+ object->deleted &&
+ object->softDeleted &&
+ tags.chunkId != 0) {
+ /* Data chunk in a soft deleted file, throw it away
* It's a soft deleted data chunk,
- * No need to copy this, just forget about it and
+ * No need to copy this, just forget about it and
* fix up the object.
*/
cleanups++;
}
markNAND = 0;
- } else if (0
- /* Todo object && object->deleted && object->nDataChunks == 0 */
- ) {
+ } else if (0) {
+ /* Todo object && object->deleted && object->nDataChunks == 0 */
/* Deleted object header with no data chunks.
* Can be discarded and the file deleted.
*/
- object->chunkId = 0;
+ object->hdrChunk = 0;
yaffs_FreeTnode(object->myDev,
object->variant.
fileVariant.top);
if (tags.chunkId == 0) {
/* It is an object Id,
* We need to nuke the shrinkheader flags first
+ * Also need to clean up shadowing.
* We no longer want the shrinkHeader flag since its work is done
* and if it is left in place it will mess up scanning.
- * Also, clear out any shadowing stuff
*/
yaffs_ObjectHeader *oh;
oh = (yaffs_ObjectHeader *)buffer;
oh->isShrink = 0;
- oh->shadowsObject = -1;
- tags.extraShadows = 0;
tags.extraIsShrinkHeader = 0;
- }
+ oh->shadowsObject = 0;
+ oh->inbandShadowsObject = 0;
+ if(object->variantType == YAFFS_OBJECT_TYPE_FILE)
+ oh->fileSize = object->variant.fileVariant.fileSize;
+ tags.extraShadows = 0;
- newChunk =
- yaffs_WriteNewChunkWithTagsToNAND(dev, buffer, &tags, 1);
+ yaffs_VerifyObjectHeader(object, oh, &tags, 1);
+ newChunk =
+ yaffs_WriteNewChunkWithTagsToNAND(dev,(__u8 *) oh, &tags, 1);
+ } else
+ newChunk =
+ yaffs_WriteNewChunkWithTagsToNAND(dev, buffer, &tags, 1);
if (newChunk < 0) {
retVal = YAFFS_FAIL;
if (tags.chunkId == 0) {
/* It's a header */
- object->chunkId = newChunk;
+ object->hdrChunk = newChunk;
object->serial = tags.serialNumber;
} else {
/* It's a data chunk */
- yaffs_PutChunkIntoFile
+ int ok;
+ ok = yaffs_PutChunkIntoFile
(object,
tags.chunkId,
newChunk, 0);
}
}
- yaffs_DeleteChunk(dev, oldChunk, markNAND, __LINE__);
+ if (retVal == YAFFS_OK)
+ yaffs_DeleteChunk(dev, oldChunk, markNAND, __LINE__);
}
}
}
- if (chunksBefore >= (chunksAfter = yaffs_GetErasedChunks(dev))) {
- T(YAFFS_TRACE_GC,
- (TSTR
- ("gc did not increase free chunks before %d after %d"
- TENDSTR), chunksBefore, chunksAfter));
+ yaffs_VerifyCollectedBlock(dev, bi, block);
+
+
+
+ /* If the gc completed then clear the current gcBlock so that we find another. */
+ if (bi->blockState != YAFFS_BLOCK_STATE_COLLECTING) {
+ chunksAfter = yaffs_GetErasedChunks(dev);
+ if (chunksBefore >= chunksAfter) {
+ T(YAFFS_TRACE_GC,
+ (TSTR
+ ("gc did not increase free chunks before %d after %d"
+ TENDSTR), chunksBefore, chunksAfter));
+ }
+ dev->gcBlock = -1;
+ dev->gcChunk = 0;
}
dev->isDoingGC = 0;
- return YAFFS_OK;
+ return retVal;
}
/* New garbage collector
* The idea is to help clear out space in a more spread-out manner.
* Dunno if it really does anything useful.
*/
-static int yaffs_CheckGarbageCollection(yaffs_Device * dev)
+static int yaffs_CheckGarbageCollection(yaffs_Device *dev)
{
int block;
int aggressive;
int gcOk = YAFFS_OK;
int maxTries = 0;
-
+
int checkpointBlockAdjust;
if (dev->isDoingGC) {
/* Bail out so we don't get recursive gc */
return YAFFS_OK;
}
-
+
/* This loop should pass the first time.
* We'll only see looping here if the erase of the collected block fails.
*/
do {
maxTries++;
-
- checkpointBlockAdjust = (dev->nCheckpointReservedBlocks - dev->blocksInCheckpoint);
- if(checkpointBlockAdjust < 0)
+
+ checkpointBlockAdjust = yaffs_CalcCheckpointBlocksRequired(dev) - dev->blocksInCheckpoint;
+ if (checkpointBlockAdjust < 0)
checkpointBlockAdjust = 0;
- if (dev->nErasedBlocks < (dev->nReservedBlocks + checkpointBlockAdjust)) {
- /* We need a block soon...*/
+ /* If we need a block soon then do aggressive gc.*/
+ if (dev->nErasedBlocks < (dev->param.nReservedBlocks + checkpointBlockAdjust + 2))
aggressive = 1;
- } else {
- /* We're in no hurry */
+ else
aggressive = 0;
+
+ /* If we don't already have a block being gc'd then see if we should start another */
+
+ if (dev->gcBlock < 1 && !aggressive) {
+ dev->gcBlock = yaffs_FindRefreshBlock(dev);
+ dev->gcChunk = 0;
+ }
+ if (dev->gcBlock < 1) {
+ dev->gcBlock = yaffs_FindBlockForGarbageCollection(dev, aggressive);
+ dev->gcChunk = 0;
}
- block = yaffs_FindBlockForGarbageCollection(dev, aggressive);
+ block = dev->gcBlock;
if (block > 0) {
dev->garbageCollections++;
- if (!aggressive) {
+ if (!aggressive)
dev->passiveGarbageCollections++;
- }
T(YAFFS_TRACE_GC,
(TSTR
("yaffs: GC erasedBlocks %d aggressive %d" TENDSTR),
dev->nErasedBlocks, aggressive));
- gcOk = yaffs_GarbageCollectBlock(dev, block);
+ gcOk = yaffs_GarbageCollectBlock(dev, block, aggressive);
}
- if (dev->nErasedBlocks < (dev->nReservedBlocks) && block > 0) {
+ if (dev->nErasedBlocks < (dev->param.nReservedBlocks) && block > 0) {
T(YAFFS_TRACE_GC,
(TSTR
("yaffs: GC !!!no reclaim!!! erasedBlocks %d after try %d block %d"
TENDSTR), dev->nErasedBlocks, maxTries, block));
}
- } while ((dev->nErasedBlocks < dev->nReservedBlocks) && (block > 0)
- && (maxTries < 2));
+ } while ((dev->nErasedBlocks < dev->param.nReservedBlocks) &&
+ (block > 0) &&
+ (maxTries < 2));
return aggressive ? gcOk : YAFFS_OK;
}
/*------------------------- TAGS --------------------------------*/
-static int yaffs_TagsMatch(const yaffs_ExtendedTags * tags, int objectId,
+static int yaffs_TagsMatch(const yaffs_ExtendedTags *tags, int objectId,
int chunkInObject)
{
return (tags->chunkId == chunkInObject &&
/*-------------------- Data file manipulation -----------------*/
-static int yaffs_FindChunkInFile(yaffs_Object * in, int chunkInInode,
- yaffs_ExtendedTags * tags)
+static int yaffs_FindChunkInFile(yaffs_Object *in, int chunkInInode,
+ yaffs_ExtendedTags *tags)
{
/*Get the Tnode, then get the level 0 offset chunk offset */
yaffs_Tnode *tn;
tn = yaffs_FindLevel0Tnode(dev, &in->variant.fileVariant, chunkInInode);
if (tn) {
- theChunk = yaffs_GetChunkGroupBase(dev,tn,chunkInInode);
+ theChunk = yaffs_GetChunkGroupBase(dev, tn, chunkInInode);
retVal =
yaffs_FindChunkInGroup(dev, theChunk, tags, in->objectId,
return retVal;
}
-static int yaffs_FindAndDeleteChunkInFile(yaffs_Object * in, int chunkInInode,
- yaffs_ExtendedTags * tags)
+static int yaffs_FindAndDeleteChunkInFile(yaffs_Object *in, int chunkInInode,
+ yaffs_ExtendedTags *tags)
{
/* Get the Tnode, then get the level 0 offset chunk offset */
yaffs_Tnode *tn;
if (tn) {
- theChunk = yaffs_GetChunkGroupBase(dev,tn,chunkInInode);
+ theChunk = yaffs_GetChunkGroupBase(dev, tn, chunkInInode);
retVal =
yaffs_FindChunkInGroup(dev, theChunk, tags, in->objectId,
chunkInInode);
/* Delete the entry in the filestructure (if found) */
- if (retVal != -1) {
- yaffs_PutLevel0Tnode(dev,tn,chunkInInode,0);
- }
- } else {
- /*T(("No level 0 found for %d\n", chunkInInode)); */
+ if (retVal != -1)
+ yaffs_LoadLevel0Tnode(dev, tn, chunkInInode, 0);
}
- if (retVal == -1) {
- /* T(("Could not find %d to delete\n",chunkInInode)); */
- }
return retVal;
}
#ifdef YAFFS_PARANOID
-static int yaffs_CheckFileSanity(yaffs_Object * in)
+static int yaffs_CheckFileSanity(yaffs_Object *in)
{
int chunk;
int nChunks;
int theChunk;
int chunkDeleted;
- if (in->variantType != YAFFS_OBJECT_TYPE_FILE) {
- /* T(("Object not a file\n")); */
+ if (in->variantType != YAFFS_OBJECT_TYPE_FILE)
return YAFFS_FAIL;
- }
objId = in->objectId;
fSize = in->variant.fileVariant.fileSize;
if (tn) {
- theChunk = yaffs_GetChunkGroupBase(dev,tn,chunk);
+ theChunk = yaffs_GetChunkGroupBase(dev, tn, chunk);
if (yaffs_CheckChunkBits
- (dev, theChunk / dev->nChunksPerBlock,
- theChunk % dev->nChunksPerBlock)) {
+ (dev, theChunk / dev->param.nChunksPerBlock,
+ theChunk % dev->param.nChunksPerBlock)) {
yaffs_ReadChunkTagsFromNAND(in->myDev, theChunk,
tags,
#endif
-static int yaffs_PutChunkIntoFile(yaffs_Object * in, int chunkInInode,
+static int yaffs_PutChunkIntoFile(yaffs_Object *in, int chunkInInode,
int chunkInNAND, int inScan)
{
- /* NB inScan is zero unless scanning.
- * For forward scanning, inScan is > 0;
+ /* NB inScan is zero unless scanning.
+ * For forward scanning, inScan is > 0;
* for backward scanning inScan is < 0
+ *
+ * chunkInNAND = 0 is a dummy insert to make sure the tnodes are there.
*/
-
+
yaffs_Tnode *tn;
yaffs_Device *dev = in->myDev;
int existingChunk;
return YAFFS_OK;
}
- tn = yaffs_AddOrFindLevel0Tnode(dev,
+ tn = yaffs_AddOrFindLevel0Tnode(dev,
&in->variant.fileVariant,
chunkInInode,
NULL);
- if (!tn) {
+ if (!tn)
return YAFFS_FAIL;
- }
+
+ if(!chunkInNAND)
+ /* Dummy insert, bail now */
+ return YAFFS_OK;
- existingChunk = yaffs_GetChunkGroupBase(dev,tn,chunkInInode);
+ existingChunk = yaffs_GetChunkGroupBase(dev, tn, chunkInInode);
if (inScan != 0) {
/* If we're scanning then we need to test for duplicates
- * NB This does not need to be efficient since it should only ever
+ * NB This does not need to be efficient since it should only ever
* happen when the power fails during a write, then only one
* chunk should ever be affected.
*
* Update: For backward scanning we don't need to re-read tags so this is quite cheap.
*/
- if (existingChunk != 0) {
+ if (existingChunk > 0) {
/* NB Right now existing chunk will not be real chunkId if the device >= 32MB
* thus we have to do a FindChunkInFile to get the real chunk id.
*
}
- /* NB The deleted flags should be false, otherwise the chunks will
+ /* NB The deleted flags should be false, otherwise the chunks will
* not be loaded during a scan
*/
- newSerial = newTags.serialNumber;
- existingSerial = existingTags.serialNumber;
+ if (inScan > 0) {
+ newSerial = newTags.serialNumber;
+ existingSerial = existingTags.serialNumber;
+ }
if ((inScan > 0) &&
- (in->myDev->isYaffs2 ||
+ (in->myDev->param.isYaffs2 ||
existingChunk <= 0 ||
((existingSerial + 1) & 3) == newSerial)) {
- /* Forward scanning.
+ /* Forward scanning.
* Use new
* Delete the old one and drop through to update the tnode
*/
}
- if (existingChunk == 0) {
+ if (existingChunk == 0)
in->nDataChunks++;
- }
- yaffs_PutLevel0Tnode(dev,tn,chunkInInode,chunkInNAND);
+ yaffs_LoadLevel0Tnode(dev, tn, chunkInInode, chunkInNAND);
return YAFFS_OK;
}
-static int yaffs_ReadChunkDataFromObject(yaffs_Object * in, int chunkInInode,
- __u8 * buffer)
+static int yaffs_ReadChunkDataFromObject(yaffs_Object *in, int chunkInInode,
+ __u8 *buffer)
{
int chunkInNAND = yaffs_FindChunkInFile(in, chunkInInode, NULL);
- if (chunkInNAND >= 0) {
+ if (chunkInNAND >= 0)
return yaffs_ReadChunkWithTagsFromNAND(in->myDev, chunkInNAND,
- buffer,NULL);
- } else {
+ buffer, NULL);
+ else {
T(YAFFS_TRACE_NANDACCESS,
(TSTR("Chunk %d not found zero instead" TENDSTR),
chunkInNAND));
/* get sane (zero) data if you read a hole */
- memset(buffer, 0, in->myDev->nDataBytesPerChunk);
+ memset(buffer, 0, in->myDev->nDataBytesPerChunk);
return 0;
}
}
-void yaffs_DeleteChunk(yaffs_Device * dev, int chunkId, int markNAND, int lyn)
+void yaffs_DeleteChunk(yaffs_Device *dev, int chunkId, int markNAND, int lyn)
{
int block;
int page;
return;
dev->nDeletions++;
- block = chunkId / dev->nChunksPerBlock;
- page = chunkId % dev->nChunksPerBlock;
+ block = chunkId / dev->param.nChunksPerBlock;
+ page = chunkId % dev->param.nChunksPerBlock;
+
+
+ if (!yaffs_CheckChunkBit(dev, block, page))
+ T(YAFFS_TRACE_VERIFY,
+ (TSTR("Deleting invalid chunk %d"TENDSTR),
+ chunkId));
bi = yaffs_GetBlockInfo(dev, block);
(TSTR("line %d delete of chunk %d" TENDSTR), lyn, chunkId));
if (markNAND &&
- bi->blockState != YAFFS_BLOCK_STATE_COLLECTING && !dev->isYaffs2) {
+ bi->blockState != YAFFS_BLOCK_STATE_COLLECTING && !dev->param.isYaffs2) {
yaffs_InitialiseTags(&tags);
yaffs_BlockBecameDirty(dev, block);
}
- } else {
- /* T(("Bad news deleting chunk %d\n",chunkId)); */
}
}
-static int yaffs_WriteChunkDataToObject(yaffs_Object * in, int chunkInInode,
- const __u8 * buffer, int nBytes,
+static int yaffs_WriteChunkDataToObject(yaffs_Object *in, int chunkInInode,
+ const __u8 *buffer, int nBytes,
int useReserve)
{
/* Find old chunk Need to do this to get serial number
yaffs_CheckGarbageCollection(dev);
- /* Get the previous chunk at this location in the file if it exists */
+ /* Get the previous chunk at this location in the file if it exists.
+ * If it does not exist then put a zero into the tree. This creates
+ * the tnode now, rather than later when it is harder to clean up.
+ */
prevChunkId = yaffs_FindChunkInFile(in, chunkInInode, &prevTags);
+ if(prevChunkId < 1 &&
+ !yaffs_PutChunkIntoFile(in, chunkInInode, 0, 0))
+ return 0;
/* Set up new tags */
yaffs_InitialiseTags(&newTags);
newTags.chunkId = chunkInInode;
newTags.objectId = in->objectId;
newTags.serialNumber =
- (prevChunkId >= 0) ? prevTags.serialNumber + 1 : 1;
+ (prevChunkId > 0) ? prevTags.serialNumber + 1 : 1;
newTags.byteCount = nBytes;
+ if (nBytes < 1 || nBytes > dev->param.totalBytesPerChunk) {
+ T(YAFFS_TRACE_ERROR,
+ (TSTR("Writing %d bytes to chunk!!!!!!!!!" TENDSTR), nBytes));
+ YBUG();
+ }
+
+
newChunkId =
yaffs_WriteNewChunkWithTagsToNAND(dev, buffer, &newTags,
useReserve);
- if (newChunkId >= 0) {
+ if (newChunkId > 0) {
yaffs_PutChunkIntoFile(in, chunkInInode, newChunkId, 0);
- if (prevChunkId >= 0) {
+ if (prevChunkId > 0)
yaffs_DeleteChunk(dev, prevChunkId, 1, __LINE__);
- }
-
yaffs_CheckFileSanity(in);
}
return newChunkId;
/* UpdateObjectHeader updates the header on NAND for an object.
* If name is not NULL, then that new name is used.
*/
-int yaffs_UpdateObjectHeader(yaffs_Object * in, const YCHAR * name, int force,
+int yaffs_UpdateObjectHeader(yaffs_Object *in, const YCHAR *name, int force,
int isShrink, int shadows)
{
int newChunkId;
yaffs_ExtendedTags newTags;
+ yaffs_ExtendedTags oldTags;
+ YCHAR *alias = NULL;
__u8 *buffer = NULL;
YCHAR oldName[YAFFS_MAX_NAME_LENGTH + 1];
yaffs_ObjectHeader *oh = NULL;
- if (!in->fake || force) {
+ yaffs_strcpy(oldName, _Y("silly old name"));
+
+
+ if (!in->fake ||
+ in == dev->rootDir || /* The rootDir should also be saved */
+ force) {
yaffs_CheckGarbageCollection(dev);
+ yaffs_CheckObjectDetailsLoaded(in);
buffer = yaffs_GetTempBuffer(in->myDev, __LINE__);
oh = (yaffs_ObjectHeader *) buffer;
- prevChunkId = in->chunkId;
+ prevChunkId = in->hdrChunk;
- if (prevChunkId >= 0) {
+ if (prevChunkId > 0) {
result = yaffs_ReadChunkWithTagsFromNAND(dev, prevChunkId,
- buffer, NULL);
+ buffer, &oldTags);
+
+ yaffs_VerifyObjectHeader(in, oh, &oldTags, 0);
+
memcpy(oldName, oh->name, sizeof(oh->name));
}
oh->type = in->variantType;
oh->yst_mode = in->yst_mode;
- oh->shadowsObject = shadows;
+ oh->shadowsObject = oh->inbandShadowsObject = shadows;
#ifdef CONFIG_YAFFS_WINCE
oh->win_atime[0] = in->win_atime[0];
oh->yst_ctime = in->yst_ctime;
oh->yst_rdev = in->yst_rdev;
#endif
- if (in->parent) {
+ if (in->parent)
oh->parentObjectId = in->parent->objectId;
- } else {
+ else
oh->parentObjectId = 0;
- }
if (name && *name) {
memset(oh->name, 0, sizeof(oh->name));
yaffs_strncpy(oh->name, name, YAFFS_MAX_NAME_LENGTH);
- } else if (prevChunkId) {
+ } else if (prevChunkId > 0)
memcpy(oh->name, oldName, sizeof(oh->name));
- } else {
+ else
memset(oh->name, 0, sizeof(oh->name));
- }
oh->isShrink = isShrink;
/* Do nothing */
break;
case YAFFS_OBJECT_TYPE_SYMLINK:
+ alias = in->variant.symLinkVariant.alias;
+ if(!alias)
+ alias = _Y("no alias");
yaffs_strncpy(oh->alias,
- in->variant.symLinkVariant.alias,
+ alias,
YAFFS_MAX_ALIAS_LENGTH);
oh->alias[YAFFS_MAX_ALIAS_LENGTH] = 0;
break;
newTags.extraShadows = (oh->shadowsObject > 0) ? 1 : 0;
newTags.extraObjectType = in->variantType;
+ yaffs_VerifyObjectHeader(in, oh, &newTags, 1);
+
/* Create new chunk in NAND */
newChunkId =
yaffs_WriteNewChunkWithTagsToNAND(dev, buffer, &newTags,
- (prevChunkId >= 0) ? 1 : 0);
+ (prevChunkId > 0) ? 1 : 0);
if (newChunkId >= 0) {
- in->chunkId = newChunkId;
+ in->hdrChunk = newChunkId;
- if (prevChunkId >= 0) {
+ if (prevChunkId > 0) {
yaffs_DeleteChunk(dev, prevChunkId, 1,
__LINE__);
}
- if(!yaffs_ObjectHasCachedWriteData(in))
+ if (!yaffs_ObjectHasCachedWriteData(in))
in->dirty = 0;
/* If this was a shrink, then mark the block that the chunk lives on */
if (isShrink) {
bi = yaffs_GetBlockInfo(in->myDev,
- newChunkId /in->myDev-> nChunksPerBlock);
+ newChunkId / in->myDev->param.nChunksPerBlock);
bi->hasShrinkHeader = 1;
}
/*------------------------ Short Operations Cache ----------------------------------------
* In many situations where there is no high level buffering (eg WinCE) a lot of
- * reads might be short sequential reads, and a lot of writes may be short
+ * reads might be short sequential reads, and a lot of writes may be short
* sequential writes. eg. scanning/writing a jpeg file.
- * In these cases, a short read/write cache can provide a huge perfomance benefit
+ * In these cases, a short read/write cache can provide a huge perfomance benefit
* with dumb-as-a-rock code.
- * In Linux, the page cache provides read buffering aand the short op cache provides write
+ * In Linux, the page cache provides read buffering aand the short op cache provides write
* buffering.
*
* There are a limited number (~10) of cache chunks per device so that we don't
yaffs_Device *dev = obj->myDev;
int i;
yaffs_ChunkCache *cache;
- int nCaches = obj->myDev->nShortOpCaches;
-
- for(i = 0; i < nCaches; i++){
+ int nCaches = obj->myDev->param.nShortOpCaches;
+
+ for (i = 0; i < nCaches; i++) {
cache = &dev->srCache[i];
if (cache->object == obj &&
cache->dirty)
return 1;
}
-
+
return 0;
}
-static void yaffs_FlushFilesChunkCache(yaffs_Object * obj)
+static void yaffs_FlushFilesChunkCache(yaffs_Object *obj)
{
yaffs_Device *dev = obj->myDev;
int lowest = -99; /* Stop compiler whining. */
int i;
yaffs_ChunkCache *cache;
int chunkWritten = 0;
- int nCaches = obj->myDev->nShortOpCaches;
+ int nCaches = obj->myDev->param.nShortOpCaches;
if (nCaches > 0) {
do {
void yaffs_FlushEntireDeviceCache(yaffs_Device *dev)
{
yaffs_Object *obj;
- int nCaches = dev->nShortOpCaches;
+ int nCaches = dev->param.nShortOpCaches;
int i;
-
+
/* Find a dirty object in the cache and flush it...
* until there are no further dirty objects.
*/
do {
obj = NULL;
- for( i = 0; i < nCaches && !obj; i++) {
+ for (i = 0; i < nCaches && !obj; i++) {
if (dev->srCache[i].object &&
dev->srCache[i].dirty)
obj = dev->srCache[i].object;
-
+
}
- if(obj)
+ if (obj)
yaffs_FlushFilesChunkCache(obj);
-
- } while(obj);
-
+
+ } while (obj);
+
}
/* Grab us a cache chunk for use.
- * First look for an empty one.
+ * First look for an empty one.
* Then look for the least recently used non-dirty one.
* Then look for the least recently used dirty one...., flush and look again.
*/
-static yaffs_ChunkCache *yaffs_GrabChunkCacheWorker(yaffs_Device * dev)
+static yaffs_ChunkCache *yaffs_GrabChunkCacheWorker(yaffs_Device *dev)
{
int i;
- int usage;
- int theOne;
- if (dev->nShortOpCaches > 0) {
- for (i = 0; i < dev->nShortOpCaches; i++) {
- if (!dev->srCache[i].object)
+ if (dev->param.nShortOpCaches > 0) {
+ for (i = 0; i < dev->param.nShortOpCaches; i++) {
+ if (!dev->srCache[i].object)
return &dev->srCache[i];
}
-
- return NULL;
-
- theOne = -1;
- usage = 0; /* just to stop the compiler grizzling */
-
- for (i = 0; i < dev->nShortOpCaches; i++) {
- if (!dev->srCache[i].dirty &&
- ((dev->srCache[i].lastUse < usage && theOne >= 0) ||
- theOne < 0)) {
- usage = dev->srCache[i].lastUse;
- theOne = i;
- }
- }
-
-
- return theOne >= 0 ? &dev->srCache[theOne] : NULL;
- } else {
- return NULL;
}
+ return NULL;
}
-static yaffs_ChunkCache *yaffs_GrabChunkCache(yaffs_Device * dev)
+static yaffs_ChunkCache *yaffs_GrabChunkCache(yaffs_Device *dev)
{
yaffs_ChunkCache *cache;
yaffs_Object *theObj;
int i;
int pushout;
- if (dev->nShortOpCaches > 0) {
+ if (dev->param.nShortOpCaches > 0) {
/* Try find a non-dirty one... */
cache = yaffs_GrabChunkCacheWorker(dev);
cache = NULL;
pushout = -1;
- for (i = 0; i < dev->nShortOpCaches; i++) {
+ for (i = 0; i < dev->param.nShortOpCaches; i++) {
if (dev->srCache[i].object &&
!dev->srCache[i].locked &&
- (dev->srCache[i].lastUse < usage || !cache))
- {
+ (dev->srCache[i].lastUse < usage || !cache)) {
usage = dev->srCache[i].lastUse;
theObj = dev->srCache[i].object;
cache = &dev->srCache[i];
}
/* Find a cached chunk */
-static yaffs_ChunkCache *yaffs_FindChunkCache(const yaffs_Object * obj,
+static yaffs_ChunkCache *yaffs_FindChunkCache(const yaffs_Object *obj,
int chunkId)
{
yaffs_Device *dev = obj->myDev;
int i;
- if (dev->nShortOpCaches > 0) {
- for (i = 0; i < dev->nShortOpCaches; i++) {
+ if (dev->param.nShortOpCaches > 0) {
+ for (i = 0; i < dev->param.nShortOpCaches; i++) {
if (dev->srCache[i].object == obj &&
dev->srCache[i].chunkId == chunkId) {
dev->cacheHits++;
}
/* Mark the chunk for the least recently used algorithym */
-static void yaffs_UseChunkCache(yaffs_Device * dev, yaffs_ChunkCache * cache,
+static void yaffs_UseChunkCache(yaffs_Device *dev, yaffs_ChunkCache *cache,
int isAWrite)
{
- if (dev->nShortOpCaches > 0) {
+ if (dev->param.nShortOpCaches > 0) {
if (dev->srLastUse < 0 || dev->srLastUse > 100000000) {
/* Reset the cache usages */
int i;
- for (i = 1; i < dev->nShortOpCaches; i++) {
+ for (i = 1; i < dev->param.nShortOpCaches; i++)
dev->srCache[i].lastUse = 0;
- }
+
dev->srLastUse = 0;
}
cache->lastUse = dev->srLastUse;
- if (isAWrite) {
+ if (isAWrite)
cache->dirty = 1;
- }
}
}
* Do this when a whole page gets written,
* ie the short cache for this page is no longer valid.
*/
-static void yaffs_InvalidateChunkCache(yaffs_Object * object, int chunkId)
+static void yaffs_InvalidateChunkCache(yaffs_Object *object, int chunkId)
{
- if (object->myDev->nShortOpCaches > 0) {
+ if (object->myDev->param.nShortOpCaches > 0) {
yaffs_ChunkCache *cache = yaffs_FindChunkCache(object, chunkId);
- if (cache) {
+ if (cache)
cache->object = NULL;
- }
}
}
/* Invalidate all the cache pages associated with this object
* Do this whenever ther file is deleted or resized.
*/
-static void yaffs_InvalidateWholeChunkCache(yaffs_Object * in)
+static void yaffs_InvalidateWholeChunkCache(yaffs_Object *in)
{
int i;
yaffs_Device *dev = in->myDev;
- if (dev->nShortOpCaches > 0) {
+ if (dev->param.nShortOpCaches > 0) {
/* Invalidate it. */
- for (i = 0; i < dev->nShortOpCaches; i++) {
- if (dev->srCache[i].object == in) {
+ for (i = 0; i < dev->param.nShortOpCaches; i++) {
+ if (dev->srCache[i].object == in)
dev->srCache[i].object = NULL;
- }
}
}
}
/*--------------------- Checkpointing --------------------*/
-static int yaffs_WriteCheckpointValidityMarker(yaffs_Device *dev,int head)
+static int yaffs_WriteCheckpointValidityMarker(yaffs_Device *dev, int head)
{
yaffs_CheckpointValidity cp;
+
+ memset(&cp, 0, sizeof(cp));
+
cp.structType = sizeof(cp);
cp.magic = YAFFS_MAGIC;
cp.version = YAFFS_CHECKPOINT_VERSION;
cp.head = (head) ? 1 : 0;
-
- return (yaffs_CheckpointWrite(dev,&cp,sizeof(cp)) == sizeof(cp))?
+
+ return (yaffs_CheckpointWrite(dev, &cp, sizeof(cp)) == sizeof(cp)) ?
1 : 0;
}
{
yaffs_CheckpointValidity cp;
int ok;
-
- ok = (yaffs_CheckpointRead(dev,&cp,sizeof(cp)) == sizeof(cp));
-
- if(ok)
+
+ ok = (yaffs_CheckpointRead(dev, &cp, sizeof(cp)) == sizeof(cp));
+
+ if (ok)
ok = (cp.structType == sizeof(cp)) &&
(cp.magic == YAFFS_MAGIC) &&
(cp.version == YAFFS_CHECKPOINT_VERSION) &&
return ok ? 1 : 0;
}
-static void yaffs_DeviceToCheckpointDevice(yaffs_CheckpointDevice *cp,
+static void yaffs_DeviceToCheckpointDevice(yaffs_CheckpointDevice *cp,
yaffs_Device *dev)
{
cp->nErasedBlocks = dev->nErasedBlocks;
cp->allocationBlock = dev->allocationBlock;
cp->allocationPage = dev->allocationPage;
cp->nFreeChunks = dev->nFreeChunks;
-
+
cp->nDeletedFiles = dev->nDeletedFiles;
cp->nUnlinkedFiles = dev->nUnlinkedFiles;
cp->nBackgroundDeletions = dev->nBackgroundDeletions;
cp->sequenceNumber = dev->sequenceNumber;
cp->oldestDirtySequence = dev->oldestDirtySequence;
-
+
}
static void yaffs_CheckpointDeviceToDevice(yaffs_Device *dev,
dev->allocationBlock = cp->allocationBlock;
dev->allocationPage = cp->allocationPage;
dev->nFreeChunks = cp->nFreeChunks;
-
+
dev->nDeletedFiles = cp->nDeletedFiles;
dev->nUnlinkedFiles = cp->nUnlinkedFiles;
dev->nBackgroundDeletions = cp->nBackgroundDeletions;
__u32 nBlocks = (dev->internalEndBlock - dev->internalStartBlock + 1);
int ok;
-
+
/* Write device runtime values*/
- yaffs_DeviceToCheckpointDevice(&cp,dev);
+ yaffs_DeviceToCheckpointDevice(&cp, dev);
cp.structType = sizeof(cp);
-
- ok = (yaffs_CheckpointWrite(dev,&cp,sizeof(cp)) == sizeof(cp));
-
+
+ ok = (yaffs_CheckpointWrite(dev, &cp, sizeof(cp)) == sizeof(cp));
+
/* Write block info */
- if(ok) {
+ if (ok) {
nBytes = nBlocks * sizeof(yaffs_BlockInfo);
- ok = (yaffs_CheckpointWrite(dev,dev->blockInfo,nBytes) == nBytes);
+ ok = (yaffs_CheckpointWrite(dev, dev->blockInfo, nBytes) == nBytes);
}
-
- /* Write chunk bits */
- if(ok) {
+
+ /* Write chunk bits */
+ if (ok) {
nBytes = nBlocks * dev->chunkBitmapStride;
- ok = (yaffs_CheckpointWrite(dev,dev->chunkBits,nBytes) == nBytes);
+ ok = (yaffs_CheckpointWrite(dev, dev->chunkBits, nBytes) == nBytes);
}
return ok ? 1 : 0;
__u32 nBytes;
__u32 nBlocks = (dev->internalEndBlock - dev->internalStartBlock + 1);
- int ok;
-
- ok = (yaffs_CheckpointRead(dev,&cp,sizeof(cp)) == sizeof(cp));
- if(!ok)
+ int ok;
+
+ ok = (yaffs_CheckpointRead(dev, &cp, sizeof(cp)) == sizeof(cp));
+ if (!ok)
return 0;
-
- if(cp.structType != sizeof(cp))
+
+ if (cp.structType != sizeof(cp))
return 0;
-
-
- yaffs_CheckpointDeviceToDevice(dev,&cp);
-
+
+
+ yaffs_CheckpointDeviceToDevice(dev, &cp);
+
nBytes = nBlocks * sizeof(yaffs_BlockInfo);
-
- ok = (yaffs_CheckpointRead(dev,dev->blockInfo,nBytes) == nBytes);
-
- if(!ok)
+
+ ok = (yaffs_CheckpointRead(dev, dev->blockInfo, nBytes) == nBytes);
+
+ if (!ok)
return 0;
nBytes = nBlocks * dev->chunkBitmapStride;
-
- ok = (yaffs_CheckpointRead(dev,dev->chunkBits,nBytes) == nBytes);
-
+
+ ok = (yaffs_CheckpointRead(dev, dev->chunkBits, nBytes) == nBytes);
+
return ok ? 1 : 0;
}
cp->objectId = obj->objectId;
cp->parentId = (obj->parent) ? obj->parent->objectId : 0;
- cp->chunkId = obj->chunkId;
- cp->variantType = obj->variantType;
+ cp->hdrChunk = obj->hdrChunk;
+ cp->variantType = obj->variantType;
cp->deleted = obj->deleted;
cp->softDeleted = obj->softDeleted;
cp->unlinked = obj->unlinked;
cp->unlinkAllowed = obj->unlinkAllowed;
cp->serial = obj->serial;
cp->nDataChunks = obj->nDataChunks;
-
- if(obj->variantType == YAFFS_OBJECT_TYPE_FILE)
+
+ if (obj->variantType == YAFFS_OBJECT_TYPE_FILE)
cp->fileSizeOrEquivalentObjectId = obj->variant.fileVariant.fileSize;
- else if(obj->variantType == YAFFS_OBJECT_TYPE_HARDLINK)
+ else if (obj->variantType == YAFFS_OBJECT_TYPE_HARDLINK)
cp->fileSizeOrEquivalentObjectId = obj->variant.hardLinkVariant.equivalentObjectId;
}
-static void yaffs_CheckpointObjectToObject( yaffs_Object *obj,yaffs_CheckpointObject *cp)
+static int yaffs_CheckpointObjectToObject(yaffs_Object *obj, yaffs_CheckpointObject *cp)
{
yaffs_Object *parent;
-
+
+ if (obj->variantType != cp->variantType) {
+ T(YAFFS_TRACE_ERROR, (TSTR("Checkpoint read object %d type %d "
+ TCONT("chunk %d does not match existing object type %d")
+ TENDSTR), cp->objectId, cp->variantType, cp->hdrChunk,
+ obj->variantType));
+ return 0;
+ }
+
obj->objectId = cp->objectId;
-
- if(cp->parentId)
+
+ if (cp->parentId)
parent = yaffs_FindOrCreateObjectByNumber(
obj->myDev,
cp->parentId,
YAFFS_OBJECT_TYPE_DIRECTORY);
else
parent = NULL;
-
- if(parent)
+
+ if (parent) {
+ if (parent->variantType != YAFFS_OBJECT_TYPE_DIRECTORY) {
+ T(YAFFS_TRACE_ALWAYS, (TSTR("Checkpoint read object %d parent %d type %d"
+ TCONT(" chunk %d Parent type, %d, not directory")
+ TENDSTR),
+ cp->objectId, cp->parentId, cp->variantType,
+ cp->hdrChunk, parent->variantType));
+ return 0;
+ }
yaffs_AddObjectToDirectory(parent, obj);
-
- obj->chunkId = cp->chunkId;
- obj->variantType = cp->variantType;
+ }
+
+ obj->hdrChunk = cp->hdrChunk;
+ obj->variantType = cp->variantType;
obj->deleted = cp->deleted;
obj->softDeleted = cp->softDeleted;
obj->unlinked = cp->unlinked;
obj->unlinkAllowed = cp->unlinkAllowed;
obj->serial = cp->serial;
obj->nDataChunks = cp->nDataChunks;
-
- if(obj->variantType == YAFFS_OBJECT_TYPE_FILE)
+
+ if (obj->variantType == YAFFS_OBJECT_TYPE_FILE)
obj->variant.fileVariant.fileSize = cp->fileSizeOrEquivalentObjectId;
- else if(obj->variantType == YAFFS_OBJECT_TYPE_HARDLINK)
+ else if (obj->variantType == YAFFS_OBJECT_TYPE_HARDLINK)
obj->variant.hardLinkVariant.equivalentObjectId = cp->fileSizeOrEquivalentObjectId;
-
- if(obj->objectId >= YAFFS_NOBJECT_BUCKETS)
+
+ if (obj->hdrChunk > 0)
obj->lazyLoaded = 1;
+ return 1;
}
-static int yaffs_CheckpointTnodeWorker(yaffs_Object * in, yaffs_Tnode * tn,
- __u32 level, int chunkOffset)
+static int yaffs_CheckpointTnodeWorker(yaffs_Object *in, yaffs_Tnode *tn,
+ __u32 level, int chunkOffset)
{
int i;
yaffs_Device *dev = in->myDev;
int ok = 1;
- int nTnodeBytes = (dev->tnodeWidth * YAFFS_NTNODES_LEVEL0)/8;
+ int tnodeSize = yaffs_CalcTnodeSize(dev);
if (tn) {
if (level > 0) {
- for (i = 0; i < YAFFS_NTNODES_INTERNAL && ok; i++){
+ for (i = 0; i < YAFFS_NTNODES_INTERNAL && ok; i++) {
if (tn->internal[i]) {
ok = yaffs_CheckpointTnodeWorker(in,
tn->internal[i],
}
} else if (level == 0) {
__u32 baseOffset = chunkOffset << YAFFS_TNODES_LEVEL0_BITS;
- /* printf("write tnode at %d\n",baseOffset); */
- ok = (yaffs_CheckpointWrite(dev,&baseOffset,sizeof(baseOffset)) == sizeof(baseOffset));
- if(ok)
- ok = (yaffs_CheckpointWrite(dev,tn,nTnodeBytes) == nTnodeBytes);
+ ok = (yaffs_CheckpointWrite(dev, &baseOffset, sizeof(baseOffset)) == sizeof(baseOffset));
+ if (ok)
+ ok = (yaffs_CheckpointWrite(dev, tn, tnodeSize) == tnodeSize);
}
}
{
__u32 endMarker = ~0;
int ok = 1;
-
- if(obj->variantType == YAFFS_OBJECT_TYPE_FILE){
+
+ if (obj->variantType == YAFFS_OBJECT_TYPE_FILE) {
ok = yaffs_CheckpointTnodeWorker(obj,
obj->variant.fileVariant.top,
obj->variant.fileVariant.topLevel,
0);
- if(ok)
- ok = (yaffs_CheckpointWrite(obj->myDev,&endMarker,sizeof(endMarker)) ==
+ if (ok)
+ ok = (yaffs_CheckpointWrite(obj->myDev, &endMarker, sizeof(endMarker)) ==
sizeof(endMarker));
}
-
+
return ok ? 1 : 0;
}
yaffs_Device *dev = obj->myDev;
yaffs_FileStructure *fileStructPtr = &obj->variant.fileVariant;
yaffs_Tnode *tn;
-
- ok = (yaffs_CheckpointRead(dev,&baseChunk,sizeof(baseChunk)) == sizeof(baseChunk));
-
- while(ok && (~baseChunk)){
+ int nread = 0;
+ int tnodeSize = yaffs_CalcTnodeSize(dev);
+
+ ok = (yaffs_CheckpointRead(dev, &baseChunk, sizeof(baseChunk)) == sizeof(baseChunk));
+
+ while (ok && (~baseChunk)) {
+ nread++;
/* Read level 0 tnode */
-
- /* printf("read tnode at %d\n",baseChunk); */
+
+
tn = yaffs_GetTnodeRaw(dev);
- if(tn)
- ok = (yaffs_CheckpointRead(dev,tn,(dev->tnodeWidth * YAFFS_NTNODES_LEVEL0)/8) ==
- (dev->tnodeWidth * YAFFS_NTNODES_LEVEL0)/8);
+ if (tn)
+ ok = (yaffs_CheckpointRead(dev, tn, tnodeSize) == tnodeSize);
else
ok = 0;
-
- if(tn && ok){
+
+ if (tn && ok)
ok = yaffs_AddOrFindLevel0Tnode(dev,
- fileStructPtr,
- baseChunk,
- tn) ? 1 : 0;
- }
-
- if(ok)
- ok = (yaffs_CheckpointRead(dev,&baseChunk,sizeof(baseChunk)) == sizeof(baseChunk));
-
+ fileStructPtr,
+ baseChunk,
+ tn) ? 1 : 0;
+
+ if (ok)
+ ok = (yaffs_CheckpointRead(dev, &baseChunk, sizeof(baseChunk)) == sizeof(baseChunk));
+
}
- return ok ? 1 : 0;
+ T(YAFFS_TRACE_CHECKPOINT, (
+ TSTR("Checkpoint read tnodes %d records, last %d. ok %d" TENDSTR),
+ nread, baseChunk, ok));
+
+ return ok ? 1 : 0;
}
-
+
static int yaffs_WriteCheckpointObjects(yaffs_Device *dev)
{
yaffs_CheckpointObject cp;
int i;
int ok = 1;
- struct list_head *lh;
+ struct ylist_head *lh;
+
-
/* Iterate through the objects in each hash entry,
* dumping them to the checkpointing stream.
*/
-
- for(i = 0; ok && i < YAFFS_NOBJECT_BUCKETS; i++){
- list_for_each(lh, &dev->objectBucket[i].list) {
+
+ for (i = 0; ok && i < YAFFS_NOBJECT_BUCKETS; i++) {
+ ylist_for_each(lh, &dev->objectBucket[i].list) {
if (lh) {
- obj = list_entry(lh, yaffs_Object, hashLink);
+ obj = ylist_entry(lh, yaffs_Object, hashLink);
if (!obj->deferedFree) {
- yaffs_ObjectToCheckpointObject(&cp,obj);
+ yaffs_ObjectToCheckpointObject(&cp, obj);
cp.structType = sizeof(cp);
- T(YAFFS_TRACE_CHECKPOINT,(
- TSTR("Checkpoint write object %d parent %d type %d chunk %d obj addr %x" TENDSTR),
- cp.objectId,cp.parentId,cp.variantType,cp.chunkId,(unsigned) obj));
-
- ok = (yaffs_CheckpointWrite(dev,&cp,sizeof(cp)) == sizeof(cp));
-
- if(ok && obj->variantType == YAFFS_OBJECT_TYPE_FILE){
+ T(YAFFS_TRACE_CHECKPOINT, (
+ TSTR("Checkpoint write object %d parent %d type %d chunk %d obj addr %p" TENDSTR),
+ cp.objectId, cp.parentId, cp.variantType, cp.hdrChunk, obj));
+
+ ok = (yaffs_CheckpointWrite(dev, &cp, sizeof(cp)) == sizeof(cp));
+
+ if (ok && obj->variantType == YAFFS_OBJECT_TYPE_FILE)
ok = yaffs_WriteCheckpointTnodes(obj);
- }
}
}
}
- }
-
- /* Dump end of list */
- memset(&cp,0xFF,sizeof(yaffs_CheckpointObject));
+ }
+
+ /* Dump end of list */
+ memset(&cp, 0xFF, sizeof(yaffs_CheckpointObject));
cp.structType = sizeof(cp);
-
- if(ok)
- ok = (yaffs_CheckpointWrite(dev,&cp,sizeof(cp)) == sizeof(cp));
-
+
+ if (ok)
+ ok = (yaffs_CheckpointWrite(dev, &cp, sizeof(cp)) == sizeof(cp));
+
return ok ? 1 : 0;
}
int ok = 1;
int done = 0;
yaffs_Object *hardList = NULL;
-
- while(ok && !done) {
- ok = (yaffs_CheckpointRead(dev,&cp,sizeof(cp)) == sizeof(cp));
- if(cp.structType != sizeof(cp)) {
- /* printf("structure parsing failed\n"); */
+
+ while (ok && !done) {
+ ok = (yaffs_CheckpointRead(dev, &cp, sizeof(cp)) == sizeof(cp));
+ if (cp.structType != sizeof(cp)) {
+ T(YAFFS_TRACE_CHECKPOINT, (TSTR("struct size %d instead of %d ok %d"TENDSTR),
+ cp.structType, (int)sizeof(cp), ok));
ok = 0;
}
-
- if(ok && cp.objectId == ~0)
+
+ T(YAFFS_TRACE_CHECKPOINT, (TSTR("Checkpoint read object %d parent %d type %d chunk %d " TENDSTR),
+ cp.objectId, cp.parentId, cp.variantType, cp.hdrChunk));
+
+ if (ok && cp.objectId == ~0)
done = 1;
- else if(ok){
- obj = yaffs_FindOrCreateObjectByNumber(dev,cp.objectId, cp.variantType);
- T(YAFFS_TRACE_CHECKPOINT,(TSTR("Checkpoint read object %d parent %d type %d chunk %d obj addr %x" TENDSTR),
- cp.objectId,cp.parentId,cp.variantType,cp.chunkId,(unsigned) obj));
- if(obj) {
- yaffs_CheckpointObjectToObject(obj,&cp);
- if(obj->variantType == YAFFS_OBJECT_TYPE_FILE) {
+ else if (ok) {
+ obj = yaffs_FindOrCreateObjectByNumber(dev, cp.objectId, cp.variantType);
+ if (obj) {
+ ok = yaffs_CheckpointObjectToObject(obj, &cp);
+ if (!ok)
+ break;
+ if (obj->variantType == YAFFS_OBJECT_TYPE_FILE) {
ok = yaffs_ReadCheckpointTnodes(obj);
- } else if(obj->variantType == YAFFS_OBJECT_TYPE_HARDLINK) {
+ } else if (obj->variantType == YAFFS_OBJECT_TYPE_HARDLINK) {
obj->hardLinks.next =
- (struct list_head *)
- hardList;
+ (struct ylist_head *) hardList;
hardList = obj;
}
-
- }
+ } else
+ ok = 0;
}
}
-
- if(ok)
- yaffs_HardlinkFixup(dev,hardList);
-
+
+ if (ok)
+ yaffs_HardlinkFixup(dev, hardList);
+
return ok ? 1 : 0;
}
-static int yaffs_WriteCheckpointData(yaffs_Device *dev)
+static int yaffs_WriteCheckpointSum(yaffs_Device *dev)
{
+ __u32 checkpointSum;
+ int ok;
+
+ yaffs_GetCheckpointSum(dev, &checkpointSum);
+
+ ok = (yaffs_CheckpointWrite(dev, &checkpointSum, sizeof(checkpointSum)) == sizeof(checkpointSum));
+
+ if (!ok)
+ return 0;
+
+ return 1;
+}
+static int yaffs_ReadCheckpointSum(yaffs_Device *dev)
+{
+ __u32 checkpointSum0;
+ __u32 checkpointSum1;
int ok;
-
- ok = yaffs_CheckpointOpen(dev,1);
-
- if(ok)
- ok = yaffs_WriteCheckpointValidityMarker(dev,1);
- if(ok)
+
+ yaffs_GetCheckpointSum(dev, &checkpointSum0);
+
+ ok = (yaffs_CheckpointRead(dev, &checkpointSum1, sizeof(checkpointSum1)) == sizeof(checkpointSum1));
+
+ if (!ok)
+ return 0;
+
+ if (checkpointSum0 != checkpointSum1)
+ return 0;
+
+ return 1;
+}
+
+
+static int yaffs_WriteCheckpointData(yaffs_Device *dev)
+{
+ int ok = 1;
+
+ if (dev->param.skipCheckpointWrite || !dev->param.isYaffs2) {
+ T(YAFFS_TRACE_CHECKPOINT, (TSTR("skipping checkpoint write" TENDSTR)));
+ ok = 0;
+ }
+
+ if (ok)
+ ok = yaffs_CheckpointOpen(dev, 1);
+
+ if (ok) {
+ T(YAFFS_TRACE_CHECKPOINT, (TSTR("write checkpoint validity" TENDSTR)));
+ ok = yaffs_WriteCheckpointValidityMarker(dev, 1);
+ }
+ if (ok) {
+ T(YAFFS_TRACE_CHECKPOINT, (TSTR("write checkpoint device" TENDSTR)));
ok = yaffs_WriteCheckpointDevice(dev);
- if(ok)
+ }
+ if (ok) {
+ T(YAFFS_TRACE_CHECKPOINT, (TSTR("write checkpoint objects" TENDSTR)));
ok = yaffs_WriteCheckpointObjects(dev);
- if(ok)
- ok = yaffs_WriteCheckpointValidityMarker(dev,0);
-
- if(!yaffs_CheckpointClose(dev))
- ok = 0;
-
- if(ok)
- dev->isCheckpointed = 1;
- else
- dev->isCheckpointed = 0;
+ }
+ if (ok) {
+ T(YAFFS_TRACE_CHECKPOINT, (TSTR("write checkpoint validity" TENDSTR)));
+ ok = yaffs_WriteCheckpointValidityMarker(dev, 0);
+ }
+
+ if (ok)
+ ok = yaffs_WriteCheckpointSum(dev);
+
+ if (!yaffs_CheckpointClose(dev))
+ ok = 0;
+
+ if (ok)
+ dev->isCheckpointed = 1;
+ else
+ dev->isCheckpointed = 0;
return dev->isCheckpointed;
}
static int yaffs_ReadCheckpointData(yaffs_Device *dev)
{
- int ok;
-
- ok = yaffs_CheckpointOpen(dev,0); /* open for read */
-
- if(ok)
- ok = yaffs_ReadCheckpointValidityMarker(dev,1);
- if(ok)
+ int ok = 1;
+
+ if (dev->param.skipCheckpointRead || !dev->param.isYaffs2) {
+ T(YAFFS_TRACE_CHECKPOINT, (TSTR("skipping checkpoint read" TENDSTR)));
+ ok = 0;
+ }
+
+ if (ok)
+ ok = yaffs_CheckpointOpen(dev, 0); /* open for read */
+
+ if (ok) {
+ T(YAFFS_TRACE_CHECKPOINT, (TSTR("read checkpoint validity" TENDSTR)));
+ ok = yaffs_ReadCheckpointValidityMarker(dev, 1);
+ }
+ if (ok) {
+ T(YAFFS_TRACE_CHECKPOINT, (TSTR("read checkpoint device" TENDSTR)));
ok = yaffs_ReadCheckpointDevice(dev);
- if(ok)
+ }
+ if (ok) {
+ T(YAFFS_TRACE_CHECKPOINT, (TSTR("read checkpoint objects" TENDSTR)));
ok = yaffs_ReadCheckpointObjects(dev);
- if(ok)
- ok = yaffs_ReadCheckpointValidityMarker(dev,0);
-
+ }
+ if (ok) {
+ T(YAFFS_TRACE_CHECKPOINT, (TSTR("read checkpoint validity" TENDSTR)));
+ ok = yaffs_ReadCheckpointValidityMarker(dev, 0);
+ }
+ if (ok) {
+ ok = yaffs_ReadCheckpointSum(dev);
+ T(YAFFS_TRACE_CHECKPOINT, (TSTR("read checkpoint checksum %d" TENDSTR), ok));
+ }
- if(!yaffs_CheckpointClose(dev))
+ if (!yaffs_CheckpointClose(dev))
ok = 0;
- if(ok)
- dev->isCheckpointed = 1;
- else
- dev->isCheckpointed = 0;
+ if (ok)
+ dev->isCheckpointed = 1;
+ else
+ dev->isCheckpointed = 0;
return ok ? 1 : 0;
static void yaffs_InvalidateCheckpoint(yaffs_Device *dev)
{
- if(dev->isCheckpointed ||
- dev->blocksInCheckpoint > 0){
+ if (dev->isCheckpointed ||
+ dev->blocksInCheckpoint > 0) {
dev->isCheckpointed = 0;
yaffs_CheckpointInvalidateStream(dev);
- if(dev->superBlock && dev->markSuperBlockDirty)
- dev->markSuperBlockDirty(dev->superBlock);
+ if (dev->param.markSuperBlockDirty)
+ dev->param.markSuperBlockDirty(dev);
}
}
int yaffs_CheckpointSave(yaffs_Device *dev)
{
- yaffs_ReportOddballBlocks(dev);
- T(YAFFS_TRACE_CHECKPOINT,(TSTR("save entry: isCheckpointed %d"TENDSTR),dev->isCheckpointed));
- if(!dev->isCheckpointed)
+ T(YAFFS_TRACE_CHECKPOINT, (TSTR("save entry: isCheckpointed %d"TENDSTR), dev->isCheckpointed));
+
+ yaffs_VerifyObjects(dev);
+ yaffs_VerifyBlocks(dev);
+ yaffs_VerifyFreeChunks(dev);
+
+ if (!dev->isCheckpointed) {
+ yaffs_InvalidateCheckpoint(dev);
yaffs_WriteCheckpointData(dev);
-
- T(YAFFS_TRACE_CHECKPOINT,(TSTR("save exit: isCheckpointed %d"TENDSTR),dev->isCheckpointed));
+ }
+
+ T(YAFFS_TRACE_ALWAYS, (TSTR("save exit: isCheckpointed %d"TENDSTR), dev->isCheckpointed));
return dev->isCheckpointed;
}
int yaffs_CheckpointRestore(yaffs_Device *dev)
{
int retval;
- T(YAFFS_TRACE_CHECKPOINT,(TSTR("restore entry: isCheckpointed %d"TENDSTR),dev->isCheckpointed));
-
+ T(YAFFS_TRACE_CHECKPOINT, (TSTR("restore entry: isCheckpointed %d"TENDSTR), dev->isCheckpointed));
+
retval = yaffs_ReadCheckpointData(dev);
- T(YAFFS_TRACE_CHECKPOINT,(TSTR("restore exit: isCheckpointed %d"TENDSTR),dev->isCheckpointed));
-
- yaffs_ReportOddballBlocks(dev);
-
+ if (dev->isCheckpointed) {
+ yaffs_VerifyObjects(dev);
+ yaffs_VerifyBlocks(dev);
+ yaffs_VerifyFreeChunks(dev);
+ }
+
+ T(YAFFS_TRACE_CHECKPOINT, (TSTR("restore exit: isCheckpointed %d"TENDSTR), dev->isCheckpointed));
+
return retval;
}
* Curve-balls: the first chunk might also be the last chunk.
*/
-int yaffs_ReadDataFromFile(yaffs_Object * in, __u8 * buffer, loff_t offset,
- int nBytes)
+int yaffs_ReadDataFromFile(yaffs_Object *in, __u8 *buffer, loff_t offset,
+ int nBytes)
{
int chunk;
- int start;
+ __u32 start;
int nToCopy;
int n = nBytes;
int nDone = 0;
dev = in->myDev;
while (n > 0) {
- //chunk = offset / dev->nDataBytesPerChunk + 1;
- //start = offset % dev->nDataBytesPerChunk;
- yaffs_AddrToChunk(dev,offset,&chunk,&start);
+ /* chunk = offset / dev->nDataBytesPerChunk + 1; */
+ /* start = offset % dev->nDataBytesPerChunk; */
+ yaffs_AddrToChunk(dev, offset, &chunk, &start);
chunk++;
/* OK now check for the curveball where the start and end are in
- * the same chunk.
+ * the same chunk.
*/
- if ((start + n) < dev->nDataBytesPerChunk) {
+ if ((start + n) < dev->nDataBytesPerChunk)
nToCopy = n;
- } else {
+ else
nToCopy = dev->nDataBytesPerChunk - start;
- }
cache = yaffs_FindChunkCache(in, chunk);
/* If the chunk is already in the cache or it is less than a whole chunk
- * then use the cache (if there is caching)
+ * or we're using inband tags then use the cache (if there is caching)
* else bypass the cache.
*/
- if (cache || nToCopy != dev->nDataBytesPerChunk) {
- if (dev->nShortOpCaches > 0) {
+ if (cache || nToCopy != dev->nDataBytesPerChunk || dev->param.inbandTags) {
+ if (dev->param.nShortOpCaches > 0) {
/* If we can't find the data in the cache, then load it up. */
cache->locked = 1;
-#ifdef CONFIG_YAFFS_WINCE
- yfsd_UnlockYAFFS(TRUE);
-#endif
+
memcpy(buffer, &cache->data[start], nToCopy);
-#ifdef CONFIG_YAFFS_WINCE
- yfsd_LockYAFFS(TRUE);
-#endif
cache->locked = 0;
} else {
/* Read into the local buffer then copy..*/
yaffs_GetTempBuffer(dev, __LINE__);
yaffs_ReadChunkDataFromObject(in, chunk,
localBuffer);
-#ifdef CONFIG_YAFFS_WINCE
- yfsd_UnlockYAFFS(TRUE);
-#endif
+
memcpy(buffer, &localBuffer[start], nToCopy);
-#ifdef CONFIG_YAFFS_WINCE
- yfsd_LockYAFFS(TRUE);
-#endif
+
yaffs_ReleaseTempBuffer(dev, localBuffer,
__LINE__);
}
} else {
-#ifdef CONFIG_YAFFS_WINCE
- __u8 *localBuffer = yaffs_GetTempBuffer(dev, __LINE__);
-
- /* Under WinCE can't do direct transfer. Need to use a local buffer.
- * This is because we otherwise screw up WinCE's memory mapper
- */
- yaffs_ReadChunkDataFromObject(in, chunk, localBuffer);
-
-#ifdef CONFIG_YAFFS_WINCE
- yfsd_UnlockYAFFS(TRUE);
-#endif
- memcpy(buffer, localBuffer, dev->nDataBytesPerChunk);
-#ifdef CONFIG_YAFFS_WINCE
- yfsd_LockYAFFS(TRUE);
- yaffs_ReleaseTempBuffer(dev, localBuffer, __LINE__);
-#endif
-
-#else
/* A full chunk. Read directly into the supplied buffer. */
yaffs_ReadChunkDataFromObject(in, chunk, buffer);
-#endif
+
}
n -= nToCopy;
return nDone;
}
-int yaffs_WriteDataToFile(yaffs_Object * in, const __u8 * buffer, loff_t offset,
- int nBytes, int writeThrough)
+int yaffs_WriteDataToFile(yaffs_Object *in, const __u8 *buffer, loff_t offset,
+ int nBytes, int writeThrough)
{
int chunk;
- int start;
+ __u32 start;
int nToCopy;
int n = nBytes;
int nDone = 0;
int nToWriteBack;
int startOfWrite = offset;
int chunkWritten = 0;
- int nBytesRead;
+ __u32 nBytesRead;
+ __u32 chunkStart;
yaffs_Device *dev;
dev = in->myDev;
while (n > 0 && chunkWritten >= 0) {
- //chunk = offset / dev->nDataBytesPerChunk + 1;
- //start = offset % dev->nDataBytesPerChunk;
- yaffs_AddrToChunk(dev,offset,&chunk,&start);
+ /* chunk = offset / dev->nDataBytesPerChunk + 1; */
+ /* start = offset % dev->nDataBytesPerChunk; */
+ yaffs_AddrToChunk(dev, offset, &chunk, &start);
+
+ if (chunk * dev->nDataBytesPerChunk + start != offset ||
+ start >= dev->nDataBytesPerChunk) {
+ T(YAFFS_TRACE_ERROR, (
+ TSTR("AddrToChunk of offset %d gives chunk %d start %d"
+ TENDSTR),
+ (int)offset, chunk, start));
+ }
chunk++;
/* OK now check for the curveball where the start and end are in
* we need to write back as much as was there before.
*/
- nBytesRead =
- in->variant.fileVariant.fileSize -
- ((chunk - 1) * dev->nDataBytesPerChunk);
+ chunkStart = ((chunk - 1) * dev->nDataBytesPerChunk);
- if (nBytesRead > dev->nDataBytesPerChunk) {
+ if (chunkStart > in->variant.fileVariant.fileSize)
+ nBytesRead = 0; /* Past end of file */
+ else
+ nBytesRead = in->variant.fileVariant.fileSize - chunkStart;
+
+ if (nBytesRead > dev->nDataBytesPerChunk)
nBytesRead = dev->nDataBytesPerChunk;
- }
nToWriteBack =
(nBytesRead >
(start + n)) ? nBytesRead : (start + n);
+ if (nToWriteBack < 0 || nToWriteBack > dev->nDataBytesPerChunk)
+ YBUG();
+
} else {
nToCopy = dev->nDataBytesPerChunk - start;
nToWriteBack = dev->nDataBytesPerChunk;
}
- if (nToCopy != dev->nDataBytesPerChunk) {
- /* An incomplete start or end chunk (or maybe both start and end chunk) */
- if (dev->nShortOpCaches > 0) {
+ if (nToCopy != dev->nDataBytesPerChunk || dev->param.inbandTags) {
+ /* An incomplete start or end chunk (or maybe both start and end chunk),
+ * or we're using inband tags, so we want to use the cache buffers.
+ */
+ if (dev->param.nShortOpCaches > 0) {
yaffs_ChunkCache *cache;
/* If we can't find the data in the cache, then load the cache */
cache = yaffs_FindChunkCache(in, chunk);
-
+
if (!cache
&& yaffs_CheckSpaceForAllocation(in->
myDev)) {
yaffs_ReadChunkDataFromObject(in, chunk,
cache->
data);
- }
- else if(cache &&
- !cache->dirty &&
- !yaffs_CheckSpaceForAllocation(in->myDev)){
+ } else if (cache &&
+ !cache->dirty &&
+ !yaffs_CheckSpaceForAllocation(in->myDev)) {
/* Drop the cache if it was a read cache item and
* no space check has been made for it.
- */
+ */
cache = NULL;
}
if (cache) {
yaffs_UseChunkCache(dev, cache, 1);
cache->locked = 1;
-#ifdef CONFIG_YAFFS_WINCE
- yfsd_UnlockYAFFS(TRUE);
-#endif
+
memcpy(&cache->data[start], buffer,
nToCopy);
-#ifdef CONFIG_YAFFS_WINCE
- yfsd_LockYAFFS(TRUE);
-#endif
+
cache->locked = 0;
cache->nBytes = nToWriteBack;
yaffs_ReadChunkDataFromObject(in, chunk,
localBuffer);
-#ifdef CONFIG_YAFFS_WINCE
- yfsd_UnlockYAFFS(TRUE);
-#endif
+
memcpy(&localBuffer[start], buffer, nToCopy);
-#ifdef CONFIG_YAFFS_WINCE
- yfsd_LockYAFFS(TRUE);
-#endif
chunkWritten =
yaffs_WriteChunkDataToObject(in, chunk,
localBuffer,
}
} else {
-
-#ifdef CONFIG_YAFFS_WINCE
- /* Under WinCE can't do direct transfer. Need to use a local buffer.
- * This is because we otherwise screw up WinCE's memory mapper
- */
- __u8 *localBuffer = yaffs_GetTempBuffer(dev, __LINE__);
-#ifdef CONFIG_YAFFS_WINCE
- yfsd_UnlockYAFFS(TRUE);
-#endif
- memcpy(localBuffer, buffer, dev->nDataBytesPerChunk);
-#ifdef CONFIG_YAFFS_WINCE
- yfsd_LockYAFFS(TRUE);
-#endif
- chunkWritten =
- yaffs_WriteChunkDataToObject(in, chunk, localBuffer,
- dev->nDataBytesPerChunk,
- 0);
- yaffs_ReleaseTempBuffer(dev, localBuffer, __LINE__);
-#else
/* A full chunk. Write directly from the supplied buffer. */
+
+
+
chunkWritten =
yaffs_WriteChunkDataToObject(in, chunk, buffer,
dev->nDataBytesPerChunk,
0);
-#endif
+
/* Since we've overwritten the cached data, we better invalidate it. */
yaffs_InvalidateChunkCache(in, chunk);
}
/* Update file object */
- if ((startOfWrite + nDone) > in->variant.fileVariant.fileSize) {
+ if ((startOfWrite + nDone) > in->variant.fileVariant.fileSize)
in->variant.fileVariant.fileSize = (startOfWrite + nDone);
- }
in->dirty = 1;
/* ---------------------- File resizing stuff ------------------ */
-static void yaffs_PruneResizedChunks(yaffs_Object * in, int newSize)
+static void yaffs_PruneResizedChunks(yaffs_Object *in, int newSize)
{
yaffs_Device *dev = in->myDev;
chunkId = yaffs_FindAndDeleteChunkInFile(in, i, NULL);
if (chunkId > 0) {
if (chunkId <
- (dev->internalStartBlock * dev->nChunksPerBlock)
+ (dev->internalStartBlock * dev->param.nChunksPerBlock)
|| chunkId >=
((dev->internalEndBlock +
- 1) * dev->nChunksPerBlock)) {
+ 1) * dev->param.nChunksPerBlock)) {
T(YAFFS_TRACE_ALWAYS,
(TSTR("Found daft chunkId %d for %d" TENDSTR),
chunkId, i));
}
-int yaffs_ResizeFile(yaffs_Object * in, loff_t newSize)
+int yaffs_ResizeFile(yaffs_Object *in, loff_t newSize)
{
int oldFileSize = in->variant.fileVariant.fileSize;
- int newSizeOfPartialChunk;
+ __u32 newSizeOfPartialChunk;
int newFullChunks;
-
+
yaffs_Device *dev = in->myDev;
-
+
yaffs_AddrToChunk(dev, newSize, &newFullChunks, &newSizeOfPartialChunk);
yaffs_FlushFilesChunkCache(in);
yaffs_CheckGarbageCollection(dev);
- if (in->variantType != YAFFS_OBJECT_TYPE_FILE) {
- return yaffs_GetFileSize(in);
- }
+ if (in->variantType != YAFFS_OBJECT_TYPE_FILE)
+ return YAFFS_FAIL;
- if (newSize == oldFileSize) {
- return oldFileSize;
- }
+ if (newSize == oldFileSize)
+ return YAFFS_OK;
if (newSize < oldFileSize) {
if (newSizeOfPartialChunk != 0) {
int lastChunk = 1 + newFullChunks;
-
+
__u8 *localBuffer = yaffs_GetTempBuffer(dev, __LINE__);
/* Got to read and rewrite the last chunk with its new size and zero pad */
in->variant.fileVariant.fileSize = newSize;
yaffs_PruneFileStructure(dev, &in->variant.fileVariant);
+ } else {
+ /* newsSize > oldFileSize */
+ in->variant.fileVariant.fileSize = newSize;
}
- /* Write a new object header.
+
+
+ /* Write a new object header to reflect the resize.
* show we've shrunk the file, if need be
- * Do this only if the file is not in the deleted directories.
+ * Do this only if the file is not in the deleted directories
+ * and is not shadowed.
*/
- if (in->parent->objectId != YAFFS_OBJECTID_UNLINKED &&
- in->parent->objectId != YAFFS_OBJECTID_DELETED) {
+ if (in->parent &&
+ !in->isShadowed &&
+ in->parent->objectId != YAFFS_OBJECTID_UNLINKED &&
+ in->parent->objectId != YAFFS_OBJECTID_DELETED)
yaffs_UpdateObjectHeader(in, NULL, 0,
(newSize < oldFileSize) ? 1 : 0, 0);
- }
- return newSize;
+ return YAFFS_OK;
}
-loff_t yaffs_GetFileSize(yaffs_Object * obj)
+loff_t yaffs_GetFileSize(yaffs_Object *obj)
{
+ YCHAR *alias = NULL;
obj = yaffs_GetEquivalentObject(obj);
switch (obj->variantType) {
case YAFFS_OBJECT_TYPE_FILE:
return obj->variant.fileVariant.fileSize;
case YAFFS_OBJECT_TYPE_SYMLINK:
- return yaffs_strlen(obj->variant.symLinkVariant.alias);
+ alias = obj->variant.symLinkVariant.alias;
+ if(!alias)
+ return 0;
+ return yaffs_strnlen(alias,YAFFS_MAX_ALIAS_LENGTH);
default:
return 0;
}
-int yaffs_FlushFile(yaffs_Object * in, int updateTime)
+int yaffs_FlushFile(yaffs_Object *in, int updateTime, int dataSync)
{
int retVal;
if (in->dirty) {
yaffs_FlushFilesChunkCache(in);
- if (updateTime) {
+ if(dataSync) /* Only sync data */
+ retVal=YAFFS_OK;
+ else {
+ if (updateTime) {
#ifdef CONFIG_YAFFS_WINCE
- yfsd_WinFileTimeNow(in->win_mtime);
+ yfsd_WinFileTimeNow(in->win_mtime);
#else
- in->yst_mtime = Y_CURRENT_TIME;
+ in->yst_mtime = Y_CURRENT_TIME;
#endif
- }
+ }
- retVal =
- (yaffs_UpdateObjectHeader(in, NULL, 0, 0, 0) >=
- 0) ? YAFFS_OK : YAFFS_FAIL;
+ retVal = (yaffs_UpdateObjectHeader(in, NULL, 0, 0, 0) >=
+ 0) ? YAFFS_OK : YAFFS_FAIL;
+ }
} else {
retVal = YAFFS_OK;
}
}
-static int yaffs_DoGenericObjectDeletion(yaffs_Object * in)
+static int yaffs_DoGenericObjectDeletion(yaffs_Object *in)
{
/* First off, invalidate the file's data in the cache, without flushing. */
yaffs_InvalidateWholeChunkCache(in);
- if (in->myDev->isYaffs2 && (in->parent != in->myDev->deletedDir)) {
+ if (in->myDev->param.isYaffs2 && (in->parent != in->myDev->deletedDir)) {
/* Move to the unlinked directory so we have a record that it was deleted. */
- yaffs_ChangeObjectName(in, in->myDev->deletedDir, NULL, 0, 0);
+ yaffs_ChangeObjectName(in, in->myDev->deletedDir, _Y("deleted"), 0, 0);
}
yaffs_RemoveObjectFromDirectory(in);
- yaffs_DeleteChunk(in->myDev, in->chunkId, 1, __LINE__);
- in->chunkId = -1;
+ yaffs_DeleteChunk(in->myDev, in->hdrChunk, 1, __LINE__);
+ in->hdrChunk = 0;
yaffs_FreeObject(in);
return YAFFS_OK;
/* yaffs_DeleteFile deletes the whole file data
* and the inode associated with the file.
- * It does not delete the links associated with the file.
- */
-static int yaffs_UnlinkFile(yaffs_Object * in)
-{
-
- int retVal;
- int immediateDeletion = 0;
-
- if (1) {
-#ifdef __KERNEL__
- if (!in->myInode) {
- immediateDeletion = 1;
-
- }
-#else
- if (in->inUse <= 0) {
- immediateDeletion = 1;
-
- }
-#endif
- if (immediateDeletion) {
- retVal =
- yaffs_ChangeObjectName(in, in->myDev->deletedDir,
- NULL, 0, 0);
- T(YAFFS_TRACE_TRACING,
- (TSTR("yaffs: immediate deletion of file %d" TENDSTR),
- in->objectId));
- in->deleted = 1;
- in->myDev->nDeletedFiles++;
- if (0 && in->myDev->isYaffs2) {
- yaffs_ResizeFile(in, 0);
- }
- yaffs_SoftDeleteFile(in);
- } else {
- retVal =
- yaffs_ChangeObjectName(in, in->myDev->unlinkedDir,
- NULL, 0, 0);
- }
+ * It does not delete the links associated with the file.
+ */
+static int yaffs_UnlinkFileIfNeeded(yaffs_Object *in)
+{
+
+ int retVal;
+ int immediateDeletion = 0;
+ if (!in->myInode)
+ immediateDeletion = 1;
+
+ if (immediateDeletion) {
+ retVal =
+ yaffs_ChangeObjectName(in, in->myDev->deletedDir,
+ _Y("deleted"), 0, 0);
+ T(YAFFS_TRACE_TRACING,
+ (TSTR("yaffs: immediate deletion of file %d" TENDSTR),
+ in->objectId));
+ in->deleted = 1;
+ in->myDev->nDeletedFiles++;
+ if (1 || in->myDev->param.isYaffs2)
+ yaffs_ResizeFile(in, 0);
+ yaffs_SoftDeleteFile(in);
+ } else {
+ retVal =
+ yaffs_ChangeObjectName(in, in->myDev->unlinkedDir,
+ _Y("unlinked"), 0, 0);
}
+
+
return retVal;
}
-int yaffs_DeleteFile(yaffs_Object * in)
+int yaffs_DeleteFile(yaffs_Object *in)
{
int retVal = YAFFS_OK;
+ int deleted = in->deleted;
+
+ yaffs_ResizeFile(in, 0);
if (in->nDataChunks > 0) {
- /* Use soft deletion if there is data in the file */
- if (!in->unlinked) {
- retVal = yaffs_UnlinkFile(in);
- }
+ /* Use soft deletion if there is data in the file.
+ * That won't be the case if it has been resized to zero.
+ */
+ if (!in->unlinked)
+ retVal = yaffs_UnlinkFileIfNeeded(in);
+
if (retVal == YAFFS_OK && in->unlinked && !in->deleted) {
in->deleted = 1;
+ deleted = 1;
in->myDev->nDeletedFiles++;
yaffs_SoftDeleteFile(in);
}
- return in->deleted ? YAFFS_OK : YAFFS_FAIL;
+ return deleted ? YAFFS_OK : YAFFS_FAIL;
} else {
/* The file has no data chunks so we toss it immediately */
yaffs_FreeTnode(in->myDev, in->variant.fileVariant.top);
}
}
-static int yaffs_DeleteDirectory(yaffs_Object * in)
+static int yaffs_IsNonEmptyDirectory(yaffs_Object *obj)
{
- /* First check that the directory is empty. */
- if (list_empty(&in->variant.directoryVariant.children)) {
- return yaffs_DoGenericObjectDeletion(in);
- }
+ return (obj->variantType == YAFFS_OBJECT_TYPE_DIRECTORY) &&
+ !(ylist_empty(&obj->variant.directoryVariant.children));
+}
- return YAFFS_FAIL;
+static int yaffs_DeleteDirectory(yaffs_Object *obj)
+{
+ /* First check that the directory is empty. */
+ if (yaffs_IsNonEmptyDirectory(obj))
+ return YAFFS_FAIL;
+ return yaffs_DoGenericObjectDeletion(obj);
}
-static int yaffs_DeleteSymLink(yaffs_Object * in)
+static int yaffs_DeleteSymLink(yaffs_Object *in)
{
- YFREE(in->variant.symLinkVariant.alias);
+ if(in->variant.symLinkVariant.alias)
+ YFREE(in->variant.symLinkVariant.alias);
+ in->variant.symLinkVariant.alias=NULL;
return yaffs_DoGenericObjectDeletion(in);
}
-static int yaffs_DeleteHardLink(yaffs_Object * in)
+static int yaffs_DeleteHardLink(yaffs_Object *in)
{
/* remove this hardlink from the list assocaited with the equivalent
* object
*/
- list_del(&in->hardLinks);
+ ylist_del_init(&in->hardLinks);
return yaffs_DoGenericObjectDeletion(in);
}
-static void yaffs_DestroyObject(yaffs_Object * obj)
+int yaffs_DeleteObject(yaffs_Object *obj)
{
+int retVal = -1;
switch (obj->variantType) {
case YAFFS_OBJECT_TYPE_FILE:
- yaffs_DeleteFile(obj);
+ retVal = yaffs_DeleteFile(obj);
break;
case YAFFS_OBJECT_TYPE_DIRECTORY:
- yaffs_DeleteDirectory(obj);
+ return yaffs_DeleteDirectory(obj);
break;
case YAFFS_OBJECT_TYPE_SYMLINK:
- yaffs_DeleteSymLink(obj);
+ retVal = yaffs_DeleteSymLink(obj);
break;
case YAFFS_OBJECT_TYPE_HARDLINK:
- yaffs_DeleteHardLink(obj);
+ retVal = yaffs_DeleteHardLink(obj);
break;
case YAFFS_OBJECT_TYPE_SPECIAL:
- yaffs_DoGenericObjectDeletion(obj);
+ retVal = yaffs_DoGenericObjectDeletion(obj);
break;
case YAFFS_OBJECT_TYPE_UNKNOWN:
+ retVal = 0;
break; /* should not happen. */
}
+
+ return retVal;
}
-static int yaffs_UnlinkWorker(yaffs_Object * obj)
+static int yaffs_UnlinkWorker(yaffs_Object *obj)
{
+ int immediateDeletion = 0;
+
+ if (!obj->myInode)
+ immediateDeletion = 1;
+
+ if(obj)
+ yaffs_UpdateParent(obj->parent);
+
if (obj->variantType == YAFFS_OBJECT_TYPE_HARDLINK) {
return yaffs_DeleteHardLink(obj);
- } else if (!list_empty(&obj->hardLinks)) {
+ } else if (!ylist_empty(&obj->hardLinks)) {
/* Curve ball: We're unlinking an object that has a hardlink.
*
* This problem arises because we are not strictly following
* Instead, we do the following:
* - Select a hardlink.
* - Unhook it from the hard links
- * - Unhook it from its parent directory (so that the rename can work)
+ * - Move it from its parent directory (so that the rename can work)
* - Rename the object to the hardlink's name.
* - Delete the hardlink
*/
yaffs_Object *hl;
+ yaffs_Object *parent;
int retVal;
YCHAR name[YAFFS_MAX_NAME_LENGTH + 1];
- hl = list_entry(obj->hardLinks.next, yaffs_Object, hardLinks);
-
- list_del_init(&hl->hardLinks);
- list_del_init(&hl->siblings);
+ hl = ylist_entry(obj->hardLinks.next, yaffs_Object, hardLinks);
yaffs_GetObjectName(hl, name, YAFFS_MAX_NAME_LENGTH + 1);
+ parent = hl->parent;
+
+ ylist_del_init(&hl->hardLinks);
- retVal = yaffs_ChangeObjectName(obj, hl->parent, name, 0, 0);
+ yaffs_AddObjectToDirectory(obj->myDev->unlinkedDir, hl);
- if (retVal == YAFFS_OK) {
+ retVal = yaffs_ChangeObjectName(obj,parent, name, 0, 0);
+
+ if (retVal == YAFFS_OK)
retVal = yaffs_DoGenericObjectDeletion(hl);
- }
+
return retVal;
- } else {
+ } else if (immediateDeletion) {
switch (obj->variantType) {
case YAFFS_OBJECT_TYPE_FILE:
- return yaffs_UnlinkFile(obj);
+ return yaffs_DeleteFile(obj);
break;
case YAFFS_OBJECT_TYPE_DIRECTORY:
return yaffs_DeleteDirectory(obj);
default:
return YAFFS_FAIL;
}
- }
+ } else if(yaffs_IsNonEmptyDirectory(obj))
+ return YAFFS_FAIL;
+ else
+ return yaffs_ChangeObjectName(obj, obj->myDev->unlinkedDir,
+ _Y("unlinked"), 0, 0);
}
-static int yaffs_UnlinkObject( yaffs_Object *obj)
+static int yaffs_UnlinkObject(yaffs_Object *obj)
{
- if (obj && obj->unlinkAllowed) {
+ if (obj && obj->unlinkAllowed)
return yaffs_UnlinkWorker(obj);
- }
return YAFFS_FAIL;
}
-int yaffs_Unlink(yaffs_Object * dir, const YCHAR * name)
+int yaffs_Unlink(yaffs_Object *dir, const YCHAR *name)
{
yaffs_Object *obj;
/*----------------------- Initialisation Scanning ---------------------- */
-static void yaffs_HandleShadowedObject(yaffs_Device * dev, int objId,
- int backwardScanning)
+static void yaffs_HandleShadowedObject(yaffs_Device *dev, int objId,
+ int backwardScanning)
{
yaffs_Object *obj;
/* Handle YAFFS2 case (backward scanning)
* If the shadowed object exists then ignore.
*/
- if (yaffs_FindObjectByNumber(dev, objId)) {
+ obj = yaffs_FindObjectByNumber(dev, objId);
+ if(obj)
return;
- }
}
/* Let's create it (if it does not exist) assuming it is a file so that it can do shrinking etc.
obj =
yaffs_FindOrCreateObjectByNumber(dev, objId,
YAFFS_OBJECT_TYPE_FILE);
+ if (!obj)
+ return;
+ obj->isShadowed = 1;
yaffs_AddObjectToDirectory(dev->unlinkedDir, obj);
obj->variant.fileVariant.shrinkSize = 0;
obj->valid = 1; /* So that we don't read any other info for this file */
{
yaffs_Object *hl;
yaffs_Object *in;
-
+
while (hardList) {
hl = hardList;
hardList = (yaffs_Object *) (hardList->hardLinks.next);
if (in) {
/* Add the hardlink pointers */
hl->variant.hardLinkVariant.equivalentObject = in;
- list_add(&hl->hardLinks, &in->hardLinks);
+ ylist_add(&hl->hardLinks, &in->hardLinks);
} else {
/* Todo Need to report/handle this better.
* Got a problem... hardlink to a non-existant object
*/
hl->variant.hardLinkVariant.equivalentObject = NULL;
- INIT_LIST_HEAD(&hl->hardLinks);
+ YINIT_LIST_HEAD(&hl->hardLinks);
+
+ }
+ }
+}
+
+
+
+
+
+static int ybicmp(const void *a, const void *b)
+{
+ register int aseq = ((yaffs_BlockIndex *)a)->seq;
+ register int bseq = ((yaffs_BlockIndex *)b)->seq;
+ register int ablock = ((yaffs_BlockIndex *)a)->block;
+ register int bblock = ((yaffs_BlockIndex *)b)->block;
+ if (aseq == bseq)
+ return ablock - bblock;
+ else
+ return aseq - bseq;
+}
+
+
+struct yaffs_ShadowFixerStruct {
+ int objectId;
+ int shadowedId;
+ struct yaffs_ShadowFixerStruct *next;
+};
+
+
+static void yaffs_StripDeletedObjects(yaffs_Device *dev)
+{
+ /*
+ * Sort out state of unlinked and deleted objects after scanning.
+ */
+ struct ylist_head *i;
+ struct ylist_head *n;
+ yaffs_Object *l;
+ /* Soft delete all the unlinked files */
+ ylist_for_each_safe(i, n,
+ &dev->unlinkedDir->variant.directoryVariant.children) {
+ if (i) {
+ l = ylist_entry(i, yaffs_Object, siblings);
+ yaffs_DeleteObject(l);
}
+ }
+ ylist_for_each_safe(i, n,
+ &dev->deletedDir->variant.directoryVariant.children) {
+ if (i) {
+ l = ylist_entry(i, yaffs_Object, siblings);
+ yaffs_DeleteObject(l);
+ }
}
}
+/*
+ * This code iterates through all the objects making sure that they are rooted.
+ * Any unrooted objects are re-rooted in lost+found.
+ * An object needs to be in one of:
+ * - Directly under deleted, unlinked
+ * - Directly or indirectly under root.
+ *
+ * Note:
+ * This code assumes that we don't ever change the current relationships between
+ * directories:
+ * rootDir->parent == unlinkedDir->parent == deletedDir->parent == NULL
+ * lostNfound->parent == rootDir
+ *
+ * This fixes the problem where directories might have inadvertently been deleted
+ * leaving the object "hanging" without being rooted in the directory tree.
+ */
+
+static int yaffs_HasNULLParent(yaffs_Device *dev, yaffs_Object *obj)
+{
+ return (obj == dev->deletedDir ||
+ obj == dev->unlinkedDir||
+ obj == dev->rootDir);
+}
+
+static void yaffs_FixHangingObjects(yaffs_Device *dev)
+{
+ yaffs_Object *obj;
+ yaffs_Object *parent;
+ int i;
+ struct ylist_head *lh;
+ struct ylist_head *n;
+ int depthLimit;
+ int hanging;
+
+
+ /* Iterate through the objects in each hash entry,
+ * looking at each object.
+ * Make sure it is rooted.
+ */
+ for (i = 0; i < YAFFS_NOBJECT_BUCKETS; i++) {
+ ylist_for_each_safe(lh, n, &dev->objectBucket[i].list) {
+ if (lh) {
+ obj = ylist_entry(lh, yaffs_Object, hashLink);
+ parent= obj->parent;
+
+ if(yaffs_HasNULLParent(dev,obj)){
+ /* These directories are not hanging */
+ hanging = 0;
+ }
+ else if(!parent || parent->variantType != YAFFS_OBJECT_TYPE_DIRECTORY)
+ hanging = 1;
+ else if(yaffs_HasNULLParent(dev,parent))
+ hanging = 0;
+ else {
+ /*
+ * Need to follow the parent chain to see if it is hanging.
+ */
+ hanging = 0;
+ depthLimit=100;
+
+ while(parent != dev->rootDir &&
+ parent->parent &&
+ parent->parent->variantType == YAFFS_OBJECT_TYPE_DIRECTORY &&
+ depthLimit > 0){
+ parent = parent->parent;
+ depthLimit--;
+ }
+ if(parent != dev->rootDir)
+ hanging = 1;
+ }
+ if(hanging){
+ T(YAFFS_TRACE_SCAN,
+ (TSTR("Hanging object %d moved to lost and found" TENDSTR),
+ obj->objectId));
+ yaffs_AddObjectToDirectory(dev->lostNFoundDir,obj);
+ }
+ }
+ }
+ }
+}
+/*
+ * Delete directory contents for cleaning up lost and found.
+ */
+static void yaffs_DeleteDirectoryContents(yaffs_Object *dir)
+{
+ yaffs_Object *obj;
+ struct ylist_head *lh;
+ struct ylist_head *n;
-static int ybicmp(const void *a, const void *b){
- register int aseq = ((yaffs_BlockIndex *)a)->seq;
- register int bseq = ((yaffs_BlockIndex *)b)->seq;
- register int ablock = ((yaffs_BlockIndex *)a)->block;
- register int bblock = ((yaffs_BlockIndex *)b)->block;
- if( aseq == bseq )
- return ablock - bblock;
- else
- return aseq - bseq;
+ if(dir->variantType != YAFFS_OBJECT_TYPE_DIRECTORY)
+ YBUG();
+
+ ylist_for_each_safe(lh, n, &dir->variant.directoryVariant.children) {
+ if (lh) {
+ obj = ylist_entry(lh, yaffs_Object, siblings);
+ if(obj->variantType == YAFFS_OBJECT_TYPE_DIRECTORY)
+ yaffs_DeleteDirectoryContents(obj);
+
+ T(YAFFS_TRACE_SCAN,
+ (TSTR("Deleting lost_found object %d" TENDSTR),
+ obj->objectId));
+
+ /* Need to use UnlinkObject since Delete would not handle
+ * hardlinked objects correctly.
+ */
+ yaffs_UnlinkObject(obj);
+ }
+ }
+
+}
+static void yaffs_EmptyLostAndFound(yaffs_Device *dev)
+{
+ yaffs_DeleteDirectoryContents(dev->lostNFoundDir);
}
-static int yaffs_Scan(yaffs_Device * dev)
+static int yaffs_Scan(yaffs_Device *dev)
{
yaffs_ExtendedTags tags;
int blk;
int blockIterator;
int startIterator;
int endIterator;
- int nBlocksToScan = 0;
int result;
int chunk;
int deleted;
yaffs_BlockState state;
yaffs_Object *hardList = NULL;
- yaffs_Object *hl;
yaffs_BlockInfo *bi;
- int sequenceNumber;
+ __u32 sequenceNumber;
yaffs_ObjectHeader *oh;
yaffs_Object *in;
yaffs_Object *parent;
- int nBlocks = dev->internalEndBlock - dev->internalStartBlock + 1;
+
+ int alloc_failed = 0;
+
+ struct yaffs_ShadowFixerStruct *shadowFixerList = NULL;
+
__u8 *chunkData;
- yaffs_BlockIndex *blockIndex = NULL;
- if (dev->isYaffs2) {
- T(YAFFS_TRACE_SCAN,
- (TSTR("yaffs_Scan is not for YAFFS2!" TENDSTR)));
- return YAFFS_FAIL;
- }
-
- //TODO Throw all the yaffs2 stuuf out of yaffs_Scan since it is only for yaffs1 format.
-
+
T(YAFFS_TRACE_SCAN,
(TSTR("yaffs_Scan starts intstartblk %d intendblk %d..." TENDSTR),
dev->internalStartBlock, dev->internalEndBlock));
dev->sequenceNumber = YAFFS_LOWEST_SEQUENCE_NUMBER;
- if (dev->isYaffs2) {
- blockIndex = YMALLOC(nBlocks * sizeof(yaffs_BlockIndex));
- }
-
/* Scan all the blocks to determine their state */
for (blk = dev->internalStartBlock; blk <= dev->internalEndBlock; blk++) {
bi = yaffs_GetBlockInfo(dev, blk);
bi->blockState = state;
bi->sequenceNumber = sequenceNumber;
+ if (bi->sequenceNumber == YAFFS_SEQUENCE_BAD_BLOCK)
+ bi->blockState = state = YAFFS_BLOCK_STATE_DEAD;
+
T(YAFFS_TRACE_SCAN_DEBUG,
(TSTR("Block scanning block %d state %d seq %d" TENDSTR), blk,
state, sequenceNumber));
T(YAFFS_TRACE_SCAN_DEBUG,
(TSTR("Block empty " TENDSTR)));
dev->nErasedBlocks++;
- dev->nFreeChunks += dev->nChunksPerBlock;
- } else if (state == YAFFS_BLOCK_STATE_NEEDS_SCANNING) {
-
- /* Determine the highest sequence number */
- if (dev->isYaffs2 &&
- sequenceNumber >= YAFFS_LOWEST_SEQUENCE_NUMBER &&
- sequenceNumber < YAFFS_HIGHEST_SEQUENCE_NUMBER) {
-
- blockIndex[nBlocksToScan].seq = sequenceNumber;
- blockIndex[nBlocksToScan].block = blk;
-
- nBlocksToScan++;
-
- if (sequenceNumber >= dev->sequenceNumber) {
- dev->sequenceNumber = sequenceNumber;
- }
- } else if (dev->isYaffs2) {
- /* TODO: Nasty sequence number! */
- T(YAFFS_TRACE_SCAN,
- (TSTR
- ("Block scanning block %d has bad sequence number %d"
- TENDSTR), blk, sequenceNumber));
-
- }
+ dev->nFreeChunks += dev->param.nChunksPerBlock;
}
}
- /* Sort the blocks
- * Dungy old bubble sort for now...
- */
- if (dev->isYaffs2) {
- yaffs_BlockIndex temp;
- int i;
- int j;
-
- for (i = 0; i < nBlocksToScan; i++)
- for (j = i + 1; j < nBlocksToScan; j++)
- if (blockIndex[i].seq > blockIndex[j].seq) {
- temp = blockIndex[j];
- blockIndex[j] = blockIndex[i];
- blockIndex[i] = temp;
- }
- }
-
- /* Now scan the blocks looking at the data. */
- if (dev->isYaffs2) {
- startIterator = 0;
- endIterator = nBlocksToScan - 1;
- T(YAFFS_TRACE_SCAN_DEBUG,
- (TSTR("%d blocks to be scanned" TENDSTR), nBlocksToScan));
- } else {
- startIterator = dev->internalStartBlock;
- endIterator = dev->internalEndBlock;
- }
+ startIterator = dev->internalStartBlock;
+ endIterator = dev->internalEndBlock;
/* For each block.... */
- for (blockIterator = startIterator; blockIterator <= endIterator;
+ for (blockIterator = startIterator; !alloc_failed && blockIterator <= endIterator;
blockIterator++) {
- if (dev->isYaffs2) {
- /* get the block to scan in the correct order */
- blk = blockIndex[blockIterator].block;
- } else {
- blk = blockIterator;
- }
+ YYIELD();
+
+ YYIELD();
+
+ blk = blockIterator;
bi = yaffs_GetBlockInfo(dev, blk);
state = bi->blockState;
deleted = 0;
/* For each chunk in each block that needs scanning....*/
- for (c = 0; c < dev->nChunksPerBlock &&
+ for (c = 0; !alloc_failed && c < dev->param.nChunksPerBlock &&
state == YAFFS_BLOCK_STATE_NEEDS_SCANNING; c++) {
/* Read the tags and decide what to do */
- chunk = blk * dev->nChunksPerBlock + c;
+ chunk = blk * dev->param.nChunksPerBlock + c;
result = yaffs_ReadChunkWithTagsFromNAND(dev, chunk, NULL,
&tags);
/* Let's have a good look at this chunk... */
- if (!dev->isYaffs2 && tags.chunkDeleted) {
+ if (tags.eccResult == YAFFS_ECC_RESULT_UNFIXED || tags.chunkDeleted) {
/* YAFFS1 only...
* A deleted chunk
*/
/*T((" %d %d deleted\n",blk,c)); */
} else if (!tags.chunkUsed) {
/* An unassigned chunk in the block
- * This means that either the block is empty or
+ * This means that either the block is empty or
* this is the one being allocated from
*/
state = YAFFS_BLOCK_STATE_ALLOCATING;
dev->allocationBlock = blk;
dev->allocationPage = c;
- dev->allocationBlockFinder = blk;
- /* Set it to here to encourage the allocator to go forth from here. */
-
- /* Yaffs2 sanity check:
- * This should be the one with the highest sequence number
- */
- if (dev->isYaffs2
- && (dev->sequenceNumber !=
- bi->sequenceNumber)) {
- T(YAFFS_TRACE_ALWAYS,
- (TSTR
- ("yaffs: Allocation block %d was not highest sequence id:"
- " block seq = %d, dev seq = %d"
- TENDSTR), blk,bi->sequenceNumber,dev->sequenceNumber));
- }
+ dev->allocationBlockFinder = blk;
+ /* Set block finder here to encourage the allocator to go forth from here. */
+
}
- dev->nFreeChunks += (dev->nChunksPerBlock - c);
+ dev->nFreeChunks += (dev->param.nChunksPerBlock - c);
} else if (tags.chunkId > 0) {
/* chunkId > 0 so it is a data chunk... */
unsigned int endpos;
/* PutChunkIntoFile checks for a clash (two data chunks with
* the same chunkId).
*/
- yaffs_PutChunkIntoFile(in, tags.chunkId, chunk,
- 1);
+
+ if (!in)
+ alloc_failed = 1;
+
+ if (in) {
+ if (!yaffs_PutChunkIntoFile(in, tags.chunkId, chunk, 1))
+ alloc_failed = 1;
+ }
+
endpos =
(tags.chunkId - 1) * dev->nDataBytesPerChunk +
tags.byteCount;
- if (in->variantType == YAFFS_OBJECT_TYPE_FILE
+ if (in &&
+ in->variantType == YAFFS_OBJECT_TYPE_FILE
&& in->variant.fileVariant.scannedFileSize <
endpos) {
in->variant.fileVariant.
scannedFileSize = endpos;
- if (!dev->useHeaderFileSize) {
+ if (!dev->param.useHeaderFileSize) {
in->variant.fileVariant.
fileSize =
in->variant.fileVariant.
tags.objectId);
if (in && in->variantType != oh->type) {
/* This should not happen, but somehow
- * Wev'e ended up with an objectId that has been reused but not yet
+ * Wev'e ended up with an objectId that has been reused but not yet
* deleted, and worse still it has changed type. Delete the old object.
*/
- yaffs_DestroyObject(in);
+ yaffs_DeleteObject(in);
in = 0;
}
objectId,
oh->type);
- if (oh->shadowsObject > 0) {
- yaffs_HandleShadowedObject(dev,
- oh->
- shadowsObject,
- 0);
+ if (!in)
+ alloc_failed = 1;
+
+ if (in && oh->shadowsObject > 0) {
+
+ struct yaffs_ShadowFixerStruct *fixer;
+ fixer = YMALLOC(sizeof(struct yaffs_ShadowFixerStruct));
+ if (fixer) {
+ fixer->next = shadowFixerList;
+ shadowFixerList = fixer;
+ fixer->objectId = tags.objectId;
+ fixer->shadowedId = oh->shadowsObject;
+ }
+
}
- if (in->valid) {
+ if (in && in->valid) {
/* We have already filled this one. We have a duplicate and need to resolve it. */
unsigned existingSerial = in->serial;
unsigned newSerial = tags.serialNumber;
- if (dev->isYaffs2 ||
- ((existingSerial + 1) & 3) ==
- newSerial) {
+ if (((existingSerial + 1) & 3) == newSerial) {
/* Use new one - destroy the exisiting one */
yaffs_DeleteChunk(dev,
- in->chunkId,
+ in->hdrChunk,
1, __LINE__);
in->valid = 0;
} else {
}
}
- if (!in->valid &&
+ if (in && !in->valid &&
(tags.objectId == YAFFS_OBJECTID_ROOT ||
tags.objectId == YAFFS_OBJECTID_LOSTNFOUND)) {
/* We only load some info, don't fiddle with directory structure */
in->yst_ctime = oh->yst_ctime;
in->yst_rdev = oh->yst_rdev;
#endif
- in->chunkId = chunk;
+ in->hdrChunk = chunk;
+ in->serial = tags.serialNumber;
- } else if (!in->valid) {
+ } else if (in && !in->valid) {
/* we need to load this info */
in->valid = 1;
in->yst_ctime = oh->yst_ctime;
in->yst_rdev = oh->yst_rdev;
#endif
- in->chunkId = chunk;
+ in->hdrChunk = chunk;
+ in->serial = tags.serialNumber;
yaffs_SetObjectName(in, oh->name);
in->dirty = 0;
yaffs_FindOrCreateObjectByNumber
(dev, oh->parentObjectId,
YAFFS_OBJECT_TYPE_DIRECTORY);
- if (parent->variantType ==
+ if (!parent)
+ alloc_failed = 1;
+ if (parent && parent->variantType ==
YAFFS_OBJECT_TYPE_UNKNOWN) {
/* Set up as a directory */
parent->variantType =
- YAFFS_OBJECT_TYPE_DIRECTORY;
- INIT_LIST_HEAD(&parent->variant.
- directoryVariant.
- children);
- } else if (parent->variantType !=
- YAFFS_OBJECT_TYPE_DIRECTORY)
- {
+ YAFFS_OBJECT_TYPE_DIRECTORY;
+ YINIT_LIST_HEAD(&parent->variant.
+ directoryVariant.
+ children);
+ } else if (!parent || parent->variantType !=
+ YAFFS_OBJECT_TYPE_DIRECTORY) {
/* Hoosterman, another problem....
* We're trying to use a non-directory as a directory
*/
T(YAFFS_TRACE_ERROR,
(TSTR
- ("yaffs tragedy: attempting to use non-directory as"
- " a directory in scan. Put in lost+found."
+ ("yaffs tragedy: attempting to use non-directory as a directory in scan. Put in lost+found."
TENDSTR)));
parent = dev->lostNFoundDir;
}
* Since we might scan a hardlink before its equivalent object is scanned
* we put them all in a list.
* After scanning is complete, we should have all the objects, so we run through this
- * list and fix up all the chains.
+ * list and fix up all the chains.
*/
switch (in->variantType) {
- case YAFFS_OBJECT_TYPE_UNKNOWN:
+ case YAFFS_OBJECT_TYPE_UNKNOWN:
/* Todo got a problem */
break;
case YAFFS_OBJECT_TYPE_FILE:
- if (dev->isYaffs2
- && oh->isShrink) {
- /* Prune back the shrunken chunks */
- yaffs_PruneResizedChunks
- (in, oh->fileSize);
- /* Mark the block as having a shrinkHeader */
- bi->hasShrinkHeader = 1;
- }
-
- if (dev->useHeaderFileSize)
+ if (dev->param.useHeaderFileSize)
in->variant.fileVariant.
fileSize =
break;
case YAFFS_OBJECT_TYPE_HARDLINK:
in->variant.hardLinkVariant.
- equivalentObjectId =
- oh->equivalentObjectId;
+ equivalentObjectId =
+ oh->equivalentObjectId;
in->hardLinks.next =
- (struct list_head *)
- hardList;
+ (struct ylist_head *)
+ hardList;
hardList = in;
break;
case YAFFS_OBJECT_TYPE_DIRECTORY:
case YAFFS_OBJECT_TYPE_SPECIAL:
/* Do nothing */
break;
- case YAFFS_OBJECT_TYPE_SYMLINK:
- in->variant.symLinkVariant.
- alias =
+ case YAFFS_OBJECT_TYPE_SYMLINK:
+ in->variant.symLinkVariant.alias =
yaffs_CloneString(oh->alias);
+ if (!in->variant.symLinkVariant.alias)
+ alloc_failed = 1;
break;
}
- if (parent == dev->deletedDir) {
- yaffs_DestroyObject(in);
- bi->hasShrinkHeader = 1;
- }
}
}
}
state = YAFFS_BLOCK_STATE_FULL;
}
+ if (state == YAFFS_BLOCK_STATE_ALLOCATING) {
+ /* If the block was partially allocated then treat it as fully allocated.*/
+ state = YAFFS_BLOCK_STATE_FULL;
+ dev->allocationBlock = -1;
+ }
+
bi->blockState = state;
/* Now let's see if it was dirty */
}
- if (blockIndex) {
- YFREE(blockIndex);
- }
-
-
+
/* Ok, we've done all the scanning.
* Fix up the hard link chains.
- * We should now have scanned all the objects, now it's time to add these
+ * We should now have scanned all the objects, now it's time to add these
* hardlinks.
*/
- yaffs_HardlinkFixup(dev,hardList);
+ yaffs_HardlinkFixup(dev, hardList);
- /* Handle the unlinked files. Since they were left in an unlinked state we should
- * just delete them.
- */
+ /* Fix up any shadowed objects */
{
- struct list_head *i;
- struct list_head *n;
-
- yaffs_Object *l;
- /* Soft delete all the unlinked files */
- list_for_each_safe(i, n,
- &dev->unlinkedDir->variant.directoryVariant.
- children) {
- if (i) {
- l = list_entry(i, yaffs_Object, siblings);
- yaffs_DestroyObject(l);
- }
+ struct yaffs_ShadowFixerStruct *fixer;
+ yaffs_Object *obj;
+
+ while (shadowFixerList) {
+ fixer = shadowFixerList;
+ shadowFixerList = fixer->next;
+ /* Complete the rename transaction by deleting the shadowed object
+ * then setting the object header to unshadowed.
+ */
+ obj = yaffs_FindObjectByNumber(dev, fixer->shadowedId);
+ if (obj)
+ yaffs_DeleteObject(obj);
+
+ obj = yaffs_FindObjectByNumber(dev, fixer->objectId);
+
+ if (obj)
+ yaffs_UpdateObjectHeader(obj, NULL, 1, 0, 0);
+
+ YFREE(fixer);
}
}
yaffs_ReleaseTempBuffer(dev, chunkData, __LINE__);
+ if (alloc_failed)
+ return YAFFS_FAIL;
+
T(YAFFS_TRACE_SCAN, (TSTR("yaffs_Scan ends" TENDSTR)));
+
return YAFFS_OK;
}
{
__u8 *chunkData;
yaffs_ObjectHeader *oh;
- yaffs_Device *dev = in->myDev;
+ yaffs_Device *dev;
yaffs_ExtendedTags tags;
int result;
-
+ int alloc_failed = 0;
+
+ if (!in)
+ return;
+
+ dev = in->myDev;
+
#if 0
- T(YAFFS_TRACE_SCAN,(TSTR("details for object %d %s loaded" TENDSTR),
+ T(YAFFS_TRACE_SCAN, (TSTR("details for object %d %s loaded" TENDSTR),
in->objectId,
in->lazyLoaded ? "not yet" : "already"));
#endif
-
- if(in->lazyLoaded){
+
+ if (in->lazyLoaded && in->hdrChunk > 0) {
in->lazyLoaded = 0;
chunkData = yaffs_GetTempBuffer(dev, __LINE__);
- result = yaffs_ReadChunkWithTagsFromNAND(dev,in->chunkId,chunkData,&tags);
- oh = (yaffs_ObjectHeader *) chunkData;
+ result = yaffs_ReadChunkWithTagsFromNAND(dev, in->hdrChunk, chunkData, &tags);
+ oh = (yaffs_ObjectHeader *) chunkData;
in->yst_mode = oh->yst_mode;
#ifdef CONFIG_YAFFS_WINCE
in->yst_mtime = oh->yst_mtime;
in->yst_ctime = oh->yst_ctime;
in->yst_rdev = oh->yst_rdev;
-
+
#endif
yaffs_SetObjectName(in, oh->name);
-
- if(in->variantType == YAFFS_OBJECT_TYPE_SYMLINK)
- in->variant.symLinkVariant.alias =
+
+ if (in->variantType == YAFFS_OBJECT_TYPE_SYMLINK) {
+ in->variant.symLinkVariant.alias =
yaffs_CloneString(oh->alias);
-
- yaffs_ReleaseTempBuffer(dev,chunkData, __LINE__);
+ if (!in->variant.symLinkVariant.alias)
+ alloc_failed = 1; /* Not returned to caller */
+ }
+
+ yaffs_ReleaseTempBuffer(dev, chunkData, __LINE__);
}
}
-static int yaffs_ScanBackwards(yaffs_Device * dev)
+static int yaffs_ScanBackwards(yaffs_Device *dev)
{
yaffs_ExtendedTags tags;
int blk;
yaffs_BlockState state;
yaffs_Object *hardList = NULL;
yaffs_BlockInfo *bi;
- int sequenceNumber;
+ __u32 sequenceNumber;
yaffs_ObjectHeader *oh;
yaffs_Object *in;
yaffs_Object *parent;
int nBlocks = dev->internalEndBlock - dev->internalStartBlock + 1;
int itsUnlinked;
__u8 *chunkData;
-
+
int fileSize;
int isShrink;
int foundChunksInBlock;
int equivalentObjectId;
-
+ int alloc_failed = 0;
+
yaffs_BlockIndex *blockIndex = NULL;
int altBlockIndex = 0;
- if (!dev->isYaffs2) {
+ if (!dev->param.isYaffs2) {
T(YAFFS_TRACE_SCAN,
(TSTR("yaffs_ScanBackwards is only for YAFFS2!" TENDSTR)));
return YAFFS_FAIL;
dev->sequenceNumber = YAFFS_LOWEST_SEQUENCE_NUMBER;
blockIndex = YMALLOC(nBlocks * sizeof(yaffs_BlockIndex));
-
- if(!blockIndex) {
+
+ if (!blockIndex) {
blockIndex = YMALLOC_ALT(nBlocks * sizeof(yaffs_BlockIndex));
altBlockIndex = 1;
}
-
- if(!blockIndex) {
+
+ if (!blockIndex) {
T(YAFFS_TRACE_SCAN,
(TSTR("yaffs_Scan() could not allocate block index!" TENDSTR)));
return YAFFS_FAIL;
}
-
+
+ dev->blocksInCheckpoint = 0;
+
chunkData = yaffs_GetTempBuffer(dev, __LINE__);
/* Scan all the blocks to determine their state */
bi->blockState = state;
bi->sequenceNumber = sequenceNumber;
- if(bi->sequenceNumber == YAFFS_SEQUENCE_CHECKPOINT_DATA)
+ if (bi->sequenceNumber == YAFFS_SEQUENCE_CHECKPOINT_DATA)
bi->blockState = state = YAFFS_BLOCK_STATE_CHECKPOINT;
-
+ if (bi->sequenceNumber == YAFFS_SEQUENCE_BAD_BLOCK)
+ bi->blockState = state = YAFFS_BLOCK_STATE_DEAD;
+
T(YAFFS_TRACE_SCAN_DEBUG,
(TSTR("Block scanning block %d state %d seq %d" TENDSTR), blk,
state, sequenceNumber));
-
- if(state == YAFFS_BLOCK_STATE_CHECKPOINT){
- /* todo .. fix free space ? */
-
+
+ if (state == YAFFS_BLOCK_STATE_CHECKPOINT) {
+ dev->blocksInCheckpoint++;
+
} else if (state == YAFFS_BLOCK_STATE_DEAD) {
T(YAFFS_TRACE_BAD_BLOCKS,
(TSTR("block %d is bad" TENDSTR), blk));
T(YAFFS_TRACE_SCAN_DEBUG,
(TSTR("Block empty " TENDSTR)));
dev->nErasedBlocks++;
- dev->nFreeChunks += dev->nChunksPerBlock;
+ dev->nFreeChunks += dev->param.nChunksPerBlock;
} else if (state == YAFFS_BLOCK_STATE_NEEDS_SCANNING) {
/* Determine the highest sequence number */
- if (dev->isYaffs2 &&
- sequenceNumber >= YAFFS_LOWEST_SEQUENCE_NUMBER &&
+ if (sequenceNumber >= YAFFS_LOWEST_SEQUENCE_NUMBER &&
sequenceNumber < YAFFS_HIGHEST_SEQUENCE_NUMBER) {
blockIndex[nBlocksToScan].seq = sequenceNumber;
nBlocksToScan++;
- if (sequenceNumber >= dev->sequenceNumber) {
+ if (sequenceNumber >= dev->sequenceNumber)
dev->sequenceNumber = sequenceNumber;
- }
- } else if (dev->isYaffs2) {
+ } else {
/* TODO: Nasty sequence number! */
T(YAFFS_TRACE_SCAN,
(TSTR
#ifndef CONFIG_YAFFS_USE_OWN_SORT
{
/* Use qsort now. */
- qsort(blockIndex, nBlocksToScan, sizeof(yaffs_BlockIndex), ybicmp);
+ yaffs_qsort(blockIndex, nBlocksToScan, sizeof(yaffs_BlockIndex), ybicmp);
}
#else
{
- /* Dungy old bubble sort... */
-
+ /* Dungy old bubble sort... */
+
yaffs_BlockIndex temp;
int i;
int j;
YYIELD();
- T(YAFFS_TRACE_SCAN, (TSTR("...done" TENDSTR)));
+ T(YAFFS_TRACE_SCAN, (TSTR("...done" TENDSTR)));
/* Now scan the blocks looking at the data. */
startIterator = 0;
(TSTR("%d blocks to be scanned" TENDSTR), nBlocksToScan));
/* For each block.... backwards */
- for (blockIterator = endIterator; blockIterator >= startIterator;
- blockIterator--) {
- /* Cooperative multitasking! This loop can run for so
+ for (blockIterator = endIterator; !alloc_failed && blockIterator >= startIterator;
+ blockIterator--) {
+ /* Cooperative multitasking! This loop can run for so
long that watchdog timers expire. */
- YYIELD();
+ YYIELD();
/* get the block to scan in the correct order */
blk = blockIndex[blockIterator].block;
bi = yaffs_GetBlockInfo(dev, blk);
+
+
state = bi->blockState;
deleted = 0;
/* For each chunk in each block that needs scanning.... */
foundChunksInBlock = 0;
- for (c = dev->nChunksPerBlock - 1; c >= 0 &&
+ for (c = dev->param.nChunksPerBlock - 1;
+ !alloc_failed && c >= 0 &&
(state == YAFFS_BLOCK_STATE_NEEDS_SCANNING ||
state == YAFFS_BLOCK_STATE_ALLOCATING); c--) {
- /* Scan backwards...
+ /* Scan backwards...
* Read the tags and decide what to do
*/
- chunk = blk * dev->nChunksPerBlock + c;
+
+ chunk = blk * dev->param.nChunksPerBlock + c;
result = yaffs_ReadChunkWithTagsFromNAND(dev, chunk, NULL,
&tags);
* it is a chunk that was skipped due to failing the erased
* check. Just skip it so that it can be deleted.
* But, more typically, We get here when this is an unallocated
- * chunk and his means that either the block is empty or
+ * chunk and his means that either the block is empty or
* this is the one being allocated from
*/
- if(foundChunksInBlock)
- {
+ if (foundChunksInBlock) {
/* This is a chunk that was skipped due to failing the erased check */
-
} else if (c == 0) {
/* We're looking at the first chunk in the block so the block is unused */
state = YAFFS_BLOCK_STATE_EMPTY;
dev->nErasedBlocks++;
} else {
- /* this is the block being allocated from */
- if (state ==
- YAFFS_BLOCK_STATE_NEEDS_SCANNING) {
- T(YAFFS_TRACE_SCAN,
- (TSTR
- (" Allocating from %d %d"
- TENDSTR), blk, c));
- }
- state = YAFFS_BLOCK_STATE_ALLOCATING;
- dev->allocationBlock = blk;
- dev->allocationPage = c;
- dev->allocationBlockFinder = blk;
- /* Set it to here to encourage the allocator to
- * go forth from here.
- */
-
- /* Yaffs2 sanity check:
- * This should be the one with the highest sequence number
- */
- if (dev->isYaffs2
- && (dev->sequenceNumber !=
- bi->sequenceNumber)) {
- T(YAFFS_TRACE_ALWAYS,
- (TSTR
- ("yaffs: Allocation block %d was not highest sequence "
- "id: block seq = %d, dev seq = %d"
- TENDSTR), blk,
- bi->sequenceNumber,
- dev->sequenceNumber));
+ if (state == YAFFS_BLOCK_STATE_NEEDS_SCANNING ||
+ state == YAFFS_BLOCK_STATE_ALLOCATING) {
+ if (dev->sequenceNumber == bi->sequenceNumber) {
+ /* this is the block being allocated from */
+
+ T(YAFFS_TRACE_SCAN,
+ (TSTR
+ (" Allocating from %d %d"
+ TENDSTR), blk, c));
+
+ state = YAFFS_BLOCK_STATE_ALLOCATING;
+ dev->allocationBlock = blk;
+ dev->allocationPage = c;
+ dev->allocationBlockFinder = blk;
+ } else {
+ /* This is a partially written block that is not
+ * the current allocation block.
+ */
+
+ T(YAFFS_TRACE_ALWAYS,
+ (TSTR("Partially written block %d detected" TENDSTR),
+ blk));
+ }
}
}
dev->nFreeChunks++;
+
+ } else if (tags.eccResult == YAFFS_ECC_RESULT_UNFIXED) {
+ T(YAFFS_TRACE_SCAN,
+ (TSTR(" Unfixed ECC in chunk(%d:%d), chunk ignored"TENDSTR),
+ blk, c));
+
+ dev->nFreeChunks++;
+
} else if (tags.chunkId > 0) {
/* chunkId > 0 so it is a data chunk... */
unsigned int endpos;
__u32 chunkBase =
(tags.chunkId - 1) * dev->nDataBytesPerChunk;
-
+
foundChunksInBlock = 1;
tags.
objectId,
YAFFS_OBJECT_TYPE_FILE);
- if (in->variantType == YAFFS_OBJECT_TYPE_FILE
- && chunkBase <
- in->variant.fileVariant.shrinkSize) {
+ if (!in) {
+ /* Out of memory */
+ alloc_failed = 1;
+ }
+
+ if (in &&
+ in->variantType == YAFFS_OBJECT_TYPE_FILE
+ && chunkBase < in->variant.fileVariant.shrinkSize) {
/* This has not been invalidated by a resize */
- yaffs_PutChunkIntoFile(in, tags.chunkId,
- chunk, -1);
+ if (!yaffs_PutChunkIntoFile(in, tags.chunkId, chunk, -1)) {
+ alloc_failed = 1;
+ }
- /* File size is calculated by looking at the data chunks if we have not
+ /* File size is calculated by looking at the data chunks if we have not
* seen an object header yet. Stop this practice once we find an object header.
*/
- endpos =
- (tags.chunkId -
- 1) * dev->nDataBytesPerChunk +
- tags.byteCount;
-
+ endpos = chunkBase + tags.byteCount;
+
if (!in->valid && /* have not got an object header yet */
- in->variant.fileVariant.
- scannedFileSize < endpos) {
- in->variant.fileVariant.
- scannedFileSize = endpos;
- in->variant.fileVariant.
- fileSize =
- in->variant.fileVariant.
- scannedFileSize;
+ in->variant.fileVariant.scannedFileSize < endpos) {
+ in->variant.fileVariant.scannedFileSize = endpos;
+ in->variant.fileVariant.fileSize = endpos;
}
- } else {
- /* This chunk has been invalidated by a resize, so delete */
+ } else if (in) {
+ /* This chunk has been invalidated by a resize, or a past file deletion
+ * so delete the chunk*/
yaffs_DeleteChunk(dev, chunk, 1, __LINE__);
}
in = NULL;
if (tags.extraHeaderInfoAvailable) {
- in = yaffs_FindOrCreateObjectByNumber
- (dev, tags.objectId,
- tags.extraObjectType);
+ in = yaffs_FindOrCreateObjectByNumber(dev,
+ tags.objectId,
+ tags.extraObjectType);
+ if (!in)
+ alloc_failed = 1;
}
if (!in ||
-#ifdef CONFIG_YAFFS_DISABLE_LAZY_LOAD
- !in->valid ||
-#endif
+ (!in->valid && dev->param.disableLazyLoad) ||
tags.extraShadows ||
(!in->valid &&
(tags.objectId == YAFFS_OBJECTID_ROOT ||
- tags.objectId == YAFFS_OBJECTID_LOSTNFOUND))
- ) {
+ tags.objectId == YAFFS_OBJECTID_LOSTNFOUND))) {
/* If we don't have valid info then we need to read the chunk
- * TODO In future we can probably defer reading the chunk and
+ * TODO In future we can probably defer reading the chunk and
* living with invalid data until needed.
*/
oh = (yaffs_ObjectHeader *) chunkData;
- if (!in)
+ if (dev->param.inbandTags) {
+ /* Fix up the header if they got corrupted by inband tags */
+ oh->shadowsObject = oh->inbandShadowsObject;
+ oh->isShrink = oh->inbandIsShrink;
+ }
+
+ if (!in) {
in = yaffs_FindOrCreateObjectByNumber(dev, tags.objectId, oh->type);
+ if (!in)
+ alloc_failed = 1;
+ }
}
/* TODO Hoosterman we have a problem! */
T(YAFFS_TRACE_ERROR,
(TSTR
- ("yaffs tragedy: Could not make object for object %d "
- "at chunk %d during scan"
+ ("yaffs tragedy: Could not make object for object %d at chunk %d during scan"
TENDSTR), tags.objectId, chunk));
-
+ continue;
}
if (in->valid) {
/* We have already filled this one.
- * We have a duplicate that will be discarded, but
+ * We have a duplicate that will be discarded, but
* we first have to suck out resize info if it is a file.
*/
- if ((in->variantType == YAFFS_OBJECT_TYPE_FILE) &&
- ((oh &&
- oh-> type == YAFFS_OBJECT_TYPE_FILE)||
+ if ((in->variantType == YAFFS_OBJECT_TYPE_FILE) &&
+ ((oh &&
+ oh->type == YAFFS_OBJECT_TYPE_FILE) ||
(tags.extraHeaderInfoAvailable &&
- tags.extraObjectType == YAFFS_OBJECT_TYPE_FILE))
- ) {
+ tags.extraObjectType == YAFFS_OBJECT_TYPE_FILE))) {
__u32 thisSize =
(oh) ? oh->fileSize : tags.
extraFileLength;
(oh) ? oh->
parentObjectId : tags.
extraParentObjectId;
- unsigned isShrink =
+
+
+ isShrink =
(oh) ? oh->isShrink : tags.
extraIsShrinkHeader;
isShrink = 1;
}
- if (isShrink &&
- in->variant.fileVariant.
- shrinkSize > thisSize) {
- in->variant.fileVariant.
- shrinkSize =
- thisSize;
- }
+ if (isShrink && in->variant.fileVariant.shrinkSize > thisSize)
+ in->variant.fileVariant.shrinkSize = thisSize;
- if (isShrink) {
+ if (isShrink)
bi->hasShrinkHeader = 1;
- }
}
/* Use existing - destroy this one. */
}
+ if (!in->valid && in->variantType !=
+ (oh ? oh->type : tags.extraObjectType))
+ T(YAFFS_TRACE_ERROR, (
+ TSTR("yaffs tragedy: Bad object type, "
+ TCONT("%d != %d, for object %d at chunk ")
+ TCONT("%d during scan")
+ TENDSTR), oh ?
+ oh->type : tags.extraObjectType,
+ in->variantType, tags.objectId,
+ chunk));
+
if (!in->valid &&
(tags.objectId == YAFFS_OBJECTID_ROOT ||
tags.objectId ==
YAFFS_OBJECTID_LOSTNFOUND)) {
/* We only load some info, don't fiddle with directory structure */
in->valid = 1;
-
- if(oh) {
+
+ if (oh) {
in->variantType = oh->type;
in->yst_mode = oh->yst_mode;
in->yst_mtime = oh->yst_mtime;
in->yst_ctime = oh->yst_ctime;
in->yst_rdev = oh->yst_rdev;
-
+
#endif
} else {
in->variantType = tags.extraObjectType;
in->lazyLoaded = 1;
}
-
- in->chunkId = chunk;
+
+ in->hdrChunk = chunk;
} else if (!in->valid) {
/* we need to load this info */
in->valid = 1;
- in->chunkId = chunk;
-
- if(oh) {
+ in->hdrChunk = chunk;
+
+ if (oh) {
in->variantType = oh->type;
in->yst_mode = oh->yst_mode;
in->yst_rdev = oh->yst_rdev;
#endif
- if (oh->shadowsObject > 0)
+ if (oh->shadowsObject > 0)
yaffs_HandleShadowedObject(dev,
oh->
shadowsObject,
1);
-
+
+
yaffs_SetObjectName(in, oh->name);
parent =
yaffs_FindOrCreateObjectByNumber
- (dev, oh->parentObjectId,
- YAFFS_OBJECT_TYPE_DIRECTORY);
+ (dev, oh->parentObjectId,
+ YAFFS_OBJECT_TYPE_DIRECTORY);
fileSize = oh->fileSize;
- isShrink = oh->isShrink;
+ isShrink = oh->isShrink;
equivalentObjectId = oh->equivalentObjectId;
- }
- else {
+ } else {
in->variantType = tags.extraObjectType;
parent =
yaffs_FindOrCreateObjectByNumber
- (dev, tags.extraParentObjectId,
- YAFFS_OBJECT_TYPE_DIRECTORY);
+ (dev, tags.extraParentObjectId,
+ YAFFS_OBJECT_TYPE_DIRECTORY);
fileSize = tags.extraFileLength;
isShrink = tags.extraIsShrinkHeader;
equivalentObjectId = tags.extraEquivalentObjectId;
}
in->dirty = 0;
+ if (!parent)
+ alloc_failed = 1;
+
/* directory stuff...
* hook up to parent
*/
- if (parent->variantType ==
+ if (parent && parent->variantType ==
YAFFS_OBJECT_TYPE_UNKNOWN) {
/* Set up as a directory */
parent->variantType =
- YAFFS_OBJECT_TYPE_DIRECTORY;
- INIT_LIST_HEAD(&parent->variant.
- directoryVariant.
- children);
- } else if (parent->variantType !=
- YAFFS_OBJECT_TYPE_DIRECTORY)
- {
+ YAFFS_OBJECT_TYPE_DIRECTORY;
+ YINIT_LIST_HEAD(&parent->variant.
+ directoryVariant.
+ children);
+ } else if (!parent || parent->variantType !=
+ YAFFS_OBJECT_TYPE_DIRECTORY) {
/* Hoosterman, another problem....
* We're trying to use a non-directory as a directory
*/
T(YAFFS_TRACE_ERROR,
(TSTR
- ("yaffs tragedy: attempting to use non-directory as"
- " a directory in scan. Put in lost+found."
+ ("yaffs tragedy: attempting to use non-directory as a directory in scan. Put in lost+found."
TENDSTR)));
parent = dev->lostNFoundDir;
}
* Since we might scan a hardlink before its equivalent object is scanned
* we put them all in a list.
* After scanning is complete, we should have all the objects, so we run
- * through this list and fix up all the chains.
+ * through this list and fix up all the chains.
*/
switch (in->variantType) {
- case YAFFS_OBJECT_TYPE_UNKNOWN:
+ case YAFFS_OBJECT_TYPE_UNKNOWN:
/* Todo got a problem */
break;
case YAFFS_OBJECT_TYPE_FILE:
scannedFileSize < fileSize) {
/* This covers the case where the file size is greater
* than where the data is
- * This will happen if the file is resized to be larger
+ * This will happen if the file is resized to be larger
* than its current data extents.
*/
in->variant.fileVariant.fileSize = fileSize;
- in->variant.fileVariant.scannedFileSize =
- in->variant.fileVariant.fileSize;
+ in->variant.fileVariant.scannedFileSize = fileSize;
}
- if (isShrink &&
- in->variant.fileVariant.shrinkSize > fileSize) {
+ if (in->variant.fileVariant.shrinkSize > fileSize)
in->variant.fileVariant.shrinkSize = fileSize;
- }
+
break;
case YAFFS_OBJECT_TYPE_HARDLINK:
- if(!itsUnlinked) {
- in->variant.hardLinkVariant.equivalentObjectId =
- equivalentObjectId;
- in->hardLinks.next =
- (struct list_head *) hardList;
- hardList = in;
+ if (!itsUnlinked) {
+ in->variant.hardLinkVariant.equivalentObjectId =
+ equivalentObjectId;
+ in->hardLinks.next =
+ (struct ylist_head *) hardList;
+ hardList = in;
}
break;
case YAFFS_OBJECT_TYPE_DIRECTORY:
/* Do nothing */
break;
case YAFFS_OBJECT_TYPE_SYMLINK:
- if(oh)
- in->variant.symLinkVariant.alias =
- yaffs_CloneString(oh->
- alias);
+ if (oh) {
+ in->variant.symLinkVariant.alias =
+ yaffs_CloneString(oh->alias);
+ if (!in->variant.symLinkVariant.alias)
+ alloc_failed = 1;
+ }
break;
}
}
+
}
- }
+
+ } /* End of scanning for each chunk */
if (state == YAFFS_BLOCK_STATE_NEEDS_SCANNING) {
/* If we got this far while scanning, then the block is fully allocated. */
state = YAFFS_BLOCK_STATE_FULL;
}
+
bi->blockState = state;
/* Now let's see if it was dirty */
}
}
+
+ yaffs_SkipRestOfBlock(dev);
- if (altBlockIndex)
+ if (altBlockIndex)
YFREE_ALT(blockIndex);
else
YFREE(blockIndex);
-
+
/* Ok, we've done all the scanning.
* Fix up the hard link chains.
- * We should now have scanned all the objects, now it's time to add these
+ * We should now have scanned all the objects, now it's time to add these
* hardlinks.
*/
- yaffs_HardlinkFixup(dev,hardList);
-
-
- /*
- * Sort out state of unlinked and deleted objects.
- */
- {
- struct list_head *i;
- struct list_head *n;
-
- yaffs_Object *l;
-
- /* Soft delete all the unlinked files */
- list_for_each_safe(i, n,
- &dev->unlinkedDir->variant.directoryVariant.
- children) {
- if (i) {
- l = list_entry(i, yaffs_Object, siblings);
- yaffs_DestroyObject(l);
- }
- }
-
- /* Soft delete all the deletedDir files */
- list_for_each_safe(i, n,
- &dev->deletedDir->variant.directoryVariant.
- children) {
- if (i) {
- l = list_entry(i, yaffs_Object, siblings);
- yaffs_DestroyObject(l);
+ yaffs_HardlinkFixup(dev, hardList);
- }
- }
- }
yaffs_ReleaseTempBuffer(dev, chunkData, __LINE__);
+ if (alloc_failed)
+ return YAFFS_FAIL;
+
T(YAFFS_TRACE_SCAN, (TSTR("yaffs_ScanBackwards ends" TENDSTR)));
return YAFFS_OK;
/*------------------------------ Directory Functions ----------------------------- */
-static void yaffs_RemoveObjectFromDirectory(yaffs_Object * obj)
+static void yaffs_VerifyObjectInDirectory(yaffs_Object *obj)
{
- yaffs_Device *dev = obj->myDev;
-
- if(dev && dev->removeObjectCallback)
- dev->removeObjectCallback(obj);
-
- list_del_init(&obj->siblings);
- obj->parent = NULL;
+ struct ylist_head *lh;
+ yaffs_Object *listObj;
+
+ int count = 0;
+
+ if (!obj) {
+ T(YAFFS_TRACE_ALWAYS, (TSTR("No object to verify" TENDSTR)));
+ YBUG();
+ return;
+ }
+
+ if (yaffs_SkipVerification(obj->myDev))
+ return;
+
+ if (!obj->parent) {
+ T(YAFFS_TRACE_ALWAYS, (TSTR("Object does not have parent" TENDSTR)));
+ YBUG();
+ return;
+ }
+
+ if (obj->parent->variantType != YAFFS_OBJECT_TYPE_DIRECTORY) {
+ T(YAFFS_TRACE_ALWAYS, (TSTR("Parent is not directory" TENDSTR)));
+ YBUG();
+ }
+
+ /* Iterate through the objects in each hash entry */
+
+ ylist_for_each(lh, &obj->parent->variant.directoryVariant.children) {
+ if (lh) {
+ listObj = ylist_entry(lh, yaffs_Object, siblings);
+ yaffs_VerifyObject(listObj);
+ if (obj == listObj)
+ count++;
+ }
+ }
+
+ if (count != 1) {
+ T(YAFFS_TRACE_ALWAYS, (TSTR("Object in directory %d times" TENDSTR), count));
+ YBUG();
+ }
+}
+
+static void yaffs_VerifyDirectory(yaffs_Object *directory)
+{
+ struct ylist_head *lh;
+ yaffs_Object *listObj;
+
+ if (!directory) {
+ YBUG();
+ return;
+ }
+
+ if (yaffs_SkipFullVerification(directory->myDev))
+ return;
+
+ if (directory->variantType != YAFFS_OBJECT_TYPE_DIRECTORY) {
+ T(YAFFS_TRACE_ALWAYS, (TSTR("Directory has wrong type: %d" TENDSTR), directory->variantType));
+ YBUG();
+ }
+
+ /* Iterate through the objects in each hash entry */
+
+ ylist_for_each(lh, &directory->variant.directoryVariant.children) {
+ if (lh) {
+ listObj = ylist_entry(lh, yaffs_Object, siblings);
+ if (listObj->parent != directory) {
+ T(YAFFS_TRACE_ALWAYS, (TSTR("Object in directory list has wrong parent %p" TENDSTR), listObj->parent));
+ YBUG();
+ }
+ yaffs_VerifyObjectInDirectory(listObj);
+ }
+ }
}
+/*
+ *yaffs_UpdateParent() handles fixing a directories mtime and ctime when a new
+ * link (ie. name) is created or deleted in the directory.
+ *
+ * ie.
+ * create dir/a : update dir's mtime/ctime
+ * rm dir/a: update dir's mtime/ctime
+ * modify dir/a: don't update dir's mtimme/ctime
+ */
+
+static void yaffs_UpdateParent(yaffs_Object *obj)
+{
+ if(!obj)
+ return;
+
+ obj->dirty = 1;
+ obj->yst_mtime = obj->yst_ctime = Y_CURRENT_TIME;
-static void yaffs_AddObjectToDirectory(yaffs_Object * directory,
- yaffs_Object * obj)
+ yaffs_UpdateObjectHeader(obj,NULL,0,0,0);
+}
+
+static void yaffs_RemoveObjectFromDirectory(yaffs_Object *obj)
{
+ yaffs_Device *dev = obj->myDev;
+ yaffs_Object *parent;
+
+ yaffs_VerifyObjectInDirectory(obj);
+ parent = obj->parent;
+
+ yaffs_VerifyDirectory(parent);
+
+ if (dev && dev->param.removeObjectCallback)
+ dev->param.removeObjectCallback(obj);
+
+
+ ylist_del_init(&obj->siblings);
+ obj->parent = NULL;
+
+ yaffs_VerifyDirectory(parent);
+}
+static void yaffs_AddObjectToDirectory(yaffs_Object *directory,
+ yaffs_Object *obj)
+{
if (!directory) {
T(YAFFS_TRACE_ALWAYS,
(TSTR
("tragedy: Trying to add an object to a null pointer directory"
TENDSTR)));
YBUG();
+ return;
}
if (directory->variantType != YAFFS_OBJECT_TYPE_DIRECTORY) {
T(YAFFS_TRACE_ALWAYS,
if (obj->siblings.prev == NULL) {
/* Not initialised */
- INIT_LIST_HEAD(&obj->siblings);
-
- } else if (!list_empty(&obj->siblings)) {
- /* If it is holed up somewhere else, un hook it */
- yaffs_RemoveObjectFromDirectory(obj);
+ YBUG();
}
+
+
+ yaffs_VerifyDirectory(directory);
+
+ yaffs_RemoveObjectFromDirectory(obj);
+
+
/* Now add it */
- list_add(&obj->siblings, &directory->variant.directoryVariant.children);
+ ylist_add(&obj->siblings, &directory->variant.directoryVariant.children);
obj->parent = directory;
if (directory == obj->myDev->unlinkedDir
- || directory == obj->myDev->deletedDir) {
+ || directory == obj->myDev->deletedDir) {
obj->unlinked = 1;
obj->myDev->nUnlinkedFiles++;
obj->renameAllowed = 0;
}
+
+ yaffs_VerifyDirectory(directory);
+ yaffs_VerifyObjectInDirectory(obj);
}
-yaffs_Object *yaffs_FindObjectByName(yaffs_Object * directory,
- const YCHAR * name)
+yaffs_Object *yaffs_FindObjectByName(yaffs_Object *directory,
+ const YCHAR *name)
{
int sum;
- struct list_head *i;
+ struct ylist_head *i;
YCHAR buffer[YAFFS_MAX_NAME_LENGTH + 1];
yaffs_Object *l;
- if (!name) {
+ if (!name)
return NULL;
- }
if (!directory) {
T(YAFFS_TRACE_ALWAYS,
("tragedy: yaffs_FindObjectByName: null pointer directory"
TENDSTR)));
YBUG();
+ return NULL;
}
if (directory->variantType != YAFFS_OBJECT_TYPE_DIRECTORY) {
T(YAFFS_TRACE_ALWAYS,
sum = yaffs_CalcNameSum(name);
- list_for_each(i, &directory->variant.directoryVariant.children) {
+ ylist_for_each(i, &directory->variant.directoryVariant.children) {
if (i) {
- l = list_entry(i, yaffs_Object, siblings);
-
+ l = ylist_entry(i, yaffs_Object, siblings);
+
+ if (l->parent != directory)
+ YBUG();
+
yaffs_CheckObjectDetailsLoaded(l);
/* Special case for lost-n-found */
if (l->objectId == YAFFS_OBJECTID_LOSTNFOUND) {
- if (yaffs_strcmp(name, YAFFS_LOSTNFOUND_NAME) == 0) {
+ if (yaffs_strcmp(name, YAFFS_LOSTNFOUND_NAME) == 0)
return l;
- }
- } else if (yaffs_SumCompare(l->sum, sum) || l->chunkId <= 0)
- {
- /* LostnFound cunk called Objxxx
+ } else if (yaffs_SumCompare(l->sum, sum) || l->hdrChunk <= 0) {
+ /* LostnFound chunk called Objxxx
* Do a real check
*/
yaffs_GetObjectName(l, buffer,
- YAFFS_MAX_NAME_LENGTH);
- if (yaffs_strcmp(name, buffer) == 0) {
+ YAFFS_MAX_NAME_LENGTH + 1);
+ if (yaffs_strncmp(name, buffer, YAFFS_MAX_NAME_LENGTH) == 0)
return l;
- }
-
}
}
}
#if 0
-int yaffs_ApplyToDirectoryChildren(yaffs_Object * theDir,
- int (*fn) (yaffs_Object *))
+int yaffs_ApplyToDirectoryChildren(yaffs_Object *theDir,
+ int (*fn) (yaffs_Object *))
{
- struct list_head *i;
+ struct ylist_head *i;
yaffs_Object *l;
if (!theDir) {
("tragedy: yaffs_FindObjectByName: null pointer directory"
TENDSTR)));
YBUG();
+ return YAFFS_FAIL;
}
if (theDir->variantType != YAFFS_OBJECT_TYPE_DIRECTORY) {
T(YAFFS_TRACE_ALWAYS,
(TSTR
("tragedy: yaffs_FindObjectByName: non-directory" TENDSTR)));
YBUG();
+ return YAFFS_FAIL;
}
- list_for_each(i, &theDir->variant.directoryVariant.children) {
+ ylist_for_each(i, &theDir->variant.directoryVariant.children) {
if (i) {
- l = list_entry(i, yaffs_Object, siblings);
- if (l && !fn(l)) {
+ l = ylist_entry(i, yaffs_Object, siblings);
+ if (l && !fn(l))
return YAFFS_FAIL;
- }
}
}
* actual object.
*/
-yaffs_Object *yaffs_GetEquivalentObject(yaffs_Object * obj)
+yaffs_Object *yaffs_GetEquivalentObject(yaffs_Object *obj)
{
if (obj && obj->variantType == YAFFS_OBJECT_TYPE_HARDLINK) {
/* We want the object id of the equivalent object, not this one */
obj = obj->variant.hardLinkVariant.equivalentObject;
+ yaffs_CheckObjectDetailsLoaded(obj);
}
return obj;
-
}
-int yaffs_GetObjectName(yaffs_Object * obj, YCHAR * name, int buffSize)
+int yaffs_GetObjectName(yaffs_Object *obj, YCHAR *name, int buffSize)
{
memset(name, 0, buffSize * sizeof(YCHAR));
-
+
yaffs_CheckObjectDetailsLoaded(obj);
if (obj->objectId == YAFFS_OBJECTID_LOSTNFOUND) {
yaffs_strncpy(name, YAFFS_LOSTNFOUND_NAME, buffSize - 1);
- } else if (obj->chunkId <= 0) {
+ } else if (obj->hdrChunk <= 0) {
YCHAR locName[20];
+ YCHAR numString[20];
+ YCHAR *x = &numString[19];
+ unsigned v = obj->objectId;
+ numString[19] = 0;
+ while (v > 0) {
+ x--;
+ *x = '0' + (v % 10);
+ v /= 10;
+ }
/* make up a name */
- yaffs_sprintf(locName, _Y("%s%d"), YAFFS_LOSTNFOUND_PREFIX,
- obj->objectId);
+ yaffs_strcpy(locName, YAFFS_LOSTNFOUND_PREFIX);
+ yaffs_strcat(locName, x);
yaffs_strncpy(name, locName, buffSize - 1);
}
#ifdef CONFIG_YAFFS_SHORT_NAMES_IN_RAM
- else if (obj->shortName[0]) {
- yaffs_strcpy(name, obj->shortName);
- }
+ else if (obj->shortName[0])
+ yaffs_strncpy(name, obj->shortName,YAFFS_SHORT_NAME_LENGTH+1);
#endif
else {
int result;
memset(buffer, 0, obj->myDev->nDataBytesPerChunk);
- if (obj->chunkId >= 0) {
+ if (obj->hdrChunk > 0) {
result = yaffs_ReadChunkWithTagsFromNAND(obj->myDev,
- obj->chunkId, buffer,
+ obj->hdrChunk, buffer,
NULL);
}
yaffs_strncpy(name, oh->name, buffSize - 1);
+ name[buffSize-1]=0;
yaffs_ReleaseTempBuffer(obj->myDev, buffer, __LINE__);
}
- return yaffs_strlen(name);
+ return yaffs_strnlen(name,buffSize-1);
}
-int yaffs_GetObjectFileLength(yaffs_Object * obj)
+int yaffs_GetObjectFileLength(yaffs_Object *obj)
{
-
/* Dereference any hard linking */
obj = yaffs_GetEquivalentObject(obj);
- if (obj->variantType == YAFFS_OBJECT_TYPE_FILE) {
+ if (obj->variantType == YAFFS_OBJECT_TYPE_FILE)
return obj->variant.fileVariant.fileSize;
- }
- if (obj->variantType == YAFFS_OBJECT_TYPE_SYMLINK) {
- return yaffs_strlen(obj->variant.symLinkVariant.alias);
+ if (obj->variantType == YAFFS_OBJECT_TYPE_SYMLINK){
+ if(!obj->variant.symLinkVariant.alias)
+ return 0;
+ return yaffs_strnlen(obj->variant.symLinkVariant.alias,YAFFS_MAX_ALIAS_LENGTH);
} else {
/* Only a directory should drop through to here */
return obj->myDev->nDataBytesPerChunk;
}
}
-int yaffs_GetObjectLinkCount(yaffs_Object * obj)
+int yaffs_GetObjectLinkCount(yaffs_Object *obj)
{
int count = 0;
- struct list_head *i;
+ struct ylist_head *i;
- if (!obj->unlinked) {
- count++; /* the object itself */
- }
- list_for_each(i, &obj->hardLinks) {
- count++; /* add the hard links; */
- }
- return count;
+ if (!obj->unlinked)
+ count++; /* the object itself */
+
+ ylist_for_each(i, &obj->hardLinks)
+ count++; /* add the hard links; */
+ return count;
}
-int yaffs_GetObjectInode(yaffs_Object * obj)
+int yaffs_GetObjectInode(yaffs_Object *obj)
{
obj = yaffs_GetEquivalentObject(obj);
return obj->objectId;
}
-unsigned yaffs_GetObjectType(yaffs_Object * obj)
+unsigned yaffs_GetObjectType(yaffs_Object *obj)
{
obj = yaffs_GetEquivalentObject(obj);
}
}
-YCHAR *yaffs_GetSymlinkAlias(yaffs_Object * obj)
+YCHAR *yaffs_GetSymlinkAlias(yaffs_Object *obj)
{
obj = yaffs_GetEquivalentObject(obj);
- if (obj->variantType == YAFFS_OBJECT_TYPE_SYMLINK) {
+ if (obj->variantType == YAFFS_OBJECT_TYPE_SYMLINK)
return yaffs_CloneString(obj->variant.symLinkVariant.alias);
- } else {
+ else
return yaffs_CloneString(_Y(""));
- }
}
#ifndef CONFIG_YAFFS_WINCE
-int yaffs_SetAttributes(yaffs_Object * obj, struct iattr *attr)
+int yaffs_SetAttributes(yaffs_Object *obj, struct iattr *attr)
{
unsigned int valid = attr->ia_valid;
return YAFFS_OK;
}
-int yaffs_GetAttributes(yaffs_Object * obj, struct iattr *attr)
+int yaffs_GetAttributes(yaffs_Object *obj, struct iattr *attr)
{
unsigned int valid = 0;
attr->ia_valid = valid;
return YAFFS_OK;
-
}
#endif
#if 0
-int yaffs_DumpObject(yaffs_Object * obj)
+int yaffs_DumpObject(yaffs_Object *obj)
{
YCHAR name[257];
- yaffs_GetObjectName(obj, name, 256);
+ yaffs_GetObjectName(obj, name, YAFFS_MAX_NAME_LENGTH + 1);
T(YAFFS_TRACE_ALWAYS,
(TSTR
("Object %d, inode %d \"%s\"\n dirty %d valid %d serial %d sum %d"
" chunk %d type %d size %d\n"
TENDSTR), obj->objectId, yaffs_GetObjectInode(obj), name,
- obj->dirty, obj->valid, obj->serial, obj->sum, obj->chunkId,
+ obj->dirty, obj->valid, obj->serial, obj->sum, obj->hdrChunk,
yaffs_GetObjectType(obj), yaffs_GetObjectFileLength(obj)));
return YAFFS_OK;
/*---------------------------- Initialisation code -------------------------------------- */
-static int yaffs_CheckDevFunctions(const yaffs_Device * dev)
+static int yaffs_CheckDevFunctions(const yaffs_Device *dev)
{
/* Common functions, gotta have */
- if (!dev->eraseBlockInNAND || !dev->initialiseNAND)
+ if (!dev->param.eraseBlockInNAND || !dev->param.initialiseNAND)
return 0;
#ifdef CONFIG_YAFFS_YAFFS2
/* Can use the "with tags" style interface for yaffs1 or yaffs2 */
- if (dev->writeChunkWithTagsToNAND &&
- dev->readChunkWithTagsFromNAND &&
- !dev->writeChunkToNAND &&
- !dev->readChunkFromNAND &&
- dev->markNANDBlockBad && dev->queryNANDBlock)
+ if (dev->param.writeChunkWithTagsToNAND &&
+ dev->param.readChunkWithTagsFromNAND &&
+ !dev->param.writeChunkToNAND &&
+ !dev->param.readChunkFromNAND &&
+ dev->param.markNANDBlockBad &&
+ dev->param.queryNANDBlock)
return 1;
#endif
/* Can use the "spare" style interface for yaffs1 */
- if (!dev->isYaffs2 &&
- !dev->writeChunkWithTagsToNAND &&
- !dev->readChunkWithTagsFromNAND &&
- dev->writeChunkToNAND &&
- dev->readChunkFromNAND &&
- !dev->markNANDBlockBad && !dev->queryNANDBlock)
+ if (!dev->param.isYaffs2 &&
+ !dev->param.writeChunkWithTagsToNAND &&
+ !dev->param.readChunkWithTagsFromNAND &&
+ dev->param.writeChunkToNAND &&
+ dev->param.readChunkFromNAND &&
+ !dev->param.markNANDBlockBad &&
+ !dev->param.queryNANDBlock)
return 1;
- return 0; /* bad */
+ return 0; /* bad */
}
-static void yaffs_CreateInitialDirectories(yaffs_Device *dev)
+static int yaffs_CreateInitialDirectories(yaffs_Device *dev)
{
/* Initialise the unlinked, deleted, root and lost and found directories */
-
+
dev->lostNFoundDir = dev->rootDir = NULL;
dev->unlinkedDir = dev->deletedDir = NULL;
dev->unlinkedDir =
yaffs_CreateFakeDirectory(dev, YAFFS_OBJECTID_UNLINKED, S_IFDIR);
+
dev->deletedDir =
yaffs_CreateFakeDirectory(dev, YAFFS_OBJECTID_DELETED, S_IFDIR);
dev->lostNFoundDir =
yaffs_CreateFakeDirectory(dev, YAFFS_OBJECTID_LOSTNFOUND,
YAFFS_LOSTNFOUND_MODE | S_IFDIR);
- yaffs_AddObjectToDirectory(dev->rootDir, dev->lostNFoundDir);
+
+ if (dev->lostNFoundDir && dev->rootDir && dev->unlinkedDir && dev->deletedDir) {
+ yaffs_AddObjectToDirectory(dev->rootDir, dev->lostNFoundDir);
+ return YAFFS_OK;
+ }
+
+ return YAFFS_FAIL;
}
-int yaffs_GutsInitialise(yaffs_Device * dev)
+int yaffs_GutsInitialise(yaffs_Device *dev)
{
+ int init_failed = 0;
unsigned x;
int bits;
return YAFFS_FAIL;
}
- dev->internalStartBlock = dev->startBlock;
- dev->internalEndBlock = dev->endBlock;
+ dev->internalStartBlock = dev->param.startBlock;
+ dev->internalEndBlock = dev->param.endBlock;
dev->blockOffset = 0;
dev->chunkOffset = 0;
dev->nFreeChunks = 0;
- if (dev->startBlock == 0) {
- dev->internalStartBlock = dev->startBlock + 1;
- dev->internalEndBlock = dev->endBlock + 1;
+ dev->gcBlock = -1;
+
+ if (dev->param.startBlock == 0) {
+ dev->internalStartBlock = dev->param.startBlock + 1;
+ dev->internalEndBlock = dev->param.endBlock + 1;
dev->blockOffset = 1;
- dev->chunkOffset = dev->nChunksPerBlock;
+ dev->chunkOffset = dev->param.nChunksPerBlock;
}
/* Check geometry parameters. */
- if ((dev->isYaffs2 && dev->nDataBytesPerChunk < 1024) ||
- (!dev->isYaffs2 && dev->nDataBytesPerChunk != 512) ||
- dev->nChunksPerBlock < 2 ||
- dev->nReservedBlocks < 2 ||
- dev->internalStartBlock <= 0 ||
- dev->internalEndBlock <= 0 ||
- dev->internalEndBlock <= (dev->internalStartBlock + dev->nReservedBlocks + 2) // otherwise it is too small
- ) {
+ if ((!dev->param.inbandTags && dev->param.isYaffs2 && dev->param.totalBytesPerChunk < 1024) ||
+ (!dev->param.isYaffs2 && dev->param.totalBytesPerChunk < 512) ||
+ (dev->param.inbandTags && !dev->param.isYaffs2) ||
+ dev->param.nChunksPerBlock < 2 ||
+ dev->param.nReservedBlocks < 2 ||
+ dev->internalStartBlock <= 0 ||
+ dev->internalEndBlock <= 0 ||
+ dev->internalEndBlock <= (dev->internalStartBlock + dev->param.nReservedBlocks + 2)) { /* otherwise it is too small */
T(YAFFS_TRACE_ALWAYS,
(TSTR
- ("yaffs: NAND geometry problems: chunk size %d, type is yaffs%s "
- TENDSTR), dev->nDataBytesPerChunk, dev->isYaffs2 ? "2" : ""));
+ ("yaffs: NAND geometry problems: chunk size %d, type is yaffs%s, inbandTags %d "
+ TENDSTR), dev->param.totalBytesPerChunk, dev->param.isYaffs2 ? "2" : "", dev->param.inbandTags));
return YAFFS_FAIL;
}
return YAFFS_FAIL;
}
+ /* Sort out space for inband tags, if required */
+ if (dev->param.inbandTags)
+ dev->nDataBytesPerChunk = dev->param.totalBytesPerChunk - sizeof(yaffs_PackedTags2TagsPart);
+ else
+ dev->nDataBytesPerChunk = dev->param.totalBytesPerChunk;
+
/* Got the right mix of functions? */
if (!yaffs_CheckDevFunctions(dev)) {
/* Function missing */
dev->isMounted = 1;
-
-
/* OK now calculate a few things for the device */
-
+
/*
- * Calculate all the chunk size manipulation numbers:
+ * Calculate all the chunk size manipulation numbers:
*/
- /* Start off assuming it is a power of 2 */
- dev->chunkShift = ShiftDiv(dev->nDataBytesPerChunk);
- dev->chunkMask = (1<<dev->chunkShift) - 1;
-
- if(dev->nDataBytesPerChunk == (dev->chunkMask + 1)){
- /* Yes it is a power of 2, disable crumbs */
- dev->crumbMask = 0;
- dev->crumbShift = 0;
- dev->crumbsPerChunk = 0;
- } else {
- /* Not a power of 2, use crumbs instead */
- dev->crumbShift = ShiftDiv(sizeof(yaffs_PackedTags2TagsPart));
- dev->crumbMask = (1<<dev->crumbShift)-1;
- dev->crumbsPerChunk = dev->nDataBytesPerChunk/(1 << dev->crumbShift);
- dev->chunkShift = 0;
- dev->chunkMask = 0;
- }
-
+ x = dev->nDataBytesPerChunk;
+ /* We always use dev->chunkShift and dev->chunkDiv */
+ dev->chunkShift = Shifts(x);
+ x >>= dev->chunkShift;
+ dev->chunkDiv = x;
+ /* We only use chunk mask if chunkDiv is 1 */
+ dev->chunkMask = (1<<dev->chunkShift) - 1;
/*
* Calculate chunkGroupBits.
* We need to find the next power of 2 > than internalEndBlock
*/
- x = dev->nChunksPerBlock * (dev->internalEndBlock + 1);
-
+ x = dev->param.nChunksPerBlock * (dev->internalEndBlock + 1);
+
bits = ShiftsGE(x);
-
+
/* Set up tnode width if wide tnodes are enabled. */
- if(!dev->wideTnodesDisabled){
+ if (!dev->param.wideTnodesDisabled) {
/* bits must be even so that we end up with 32-bit words */
- if(bits & 1)
+ if (bits & 1)
bits++;
- if(bits < 16)
+ if (bits < 16)
dev->tnodeWidth = 16;
else
dev->tnodeWidth = bits;
- }
- else
+ } else
dev->tnodeWidth = 16;
-
+
dev->tnodeMask = (1<<dev->tnodeWidth)-1;
-
+
/* Level0 Tnodes are 16 bits or wider (if wide tnodes are enabled),
* so if the bitwidth of the
* chunk range we're using is greater than 16 we need
* to figure out chunk shift and chunkGroupSize
*/
-
+
if (bits <= dev->tnodeWidth)
dev->chunkGroupBits = 0;
else
dev->chunkGroupBits = bits - dev->tnodeWidth;
-
+
dev->chunkGroupSize = 1 << dev->chunkGroupBits;
- if (dev->nChunksPerBlock < dev->chunkGroupSize) {
+ if (dev->param.nChunksPerBlock < dev->chunkGroupSize) {
/* We have a problem because the soft delete won't work if
* the chunk group size > chunks per block.
* This can be remedied by using larger "virtual blocks".
dev->hasPendingPrioritisedGCs = 1; /* Assume the worst for now, will get fixed on first GC */
/* Initialise temporary buffers and caches. */
- {
- int i;
- for (i = 0; i < YAFFS_N_TEMP_BUFFERS; i++) {
- dev->tempBuffer[i].line = 0; /* not in use */
- dev->tempBuffer[i].buffer =
- YMALLOC_DMA(dev->nDataBytesPerChunk);
- }
- }
-
- if (dev->nShortOpCaches > 0) {
+ if (!yaffs_InitialiseTempBuffers(dev))
+ init_failed = 1;
+
+ dev->srCache = NULL;
+ dev->gcCleanupList = NULL;
+
+
+ if (!init_failed &&
+ dev->param.nShortOpCaches > 0) {
int i;
+ void *buf;
+ int srCacheBytes = dev->param.nShortOpCaches * sizeof(yaffs_ChunkCache);
- if (dev->nShortOpCaches > YAFFS_MAX_SHORT_OP_CACHES) {
- dev->nShortOpCaches = YAFFS_MAX_SHORT_OP_CACHES;
- }
+ if (dev->param.nShortOpCaches > YAFFS_MAX_SHORT_OP_CACHES)
+ dev->param.nShortOpCaches = YAFFS_MAX_SHORT_OP_CACHES;
+
+ dev->srCache = YMALLOC(srCacheBytes);
- dev->srCache =
- YMALLOC(dev->nShortOpCaches * sizeof(yaffs_ChunkCache));
+ buf = (__u8 *) dev->srCache;
- for (i = 0; i < dev->nShortOpCaches; i++) {
+ if (dev->srCache)
+ memset(dev->srCache, 0, srCacheBytes);
+
+ for (i = 0; i < dev->param.nShortOpCaches && buf; i++) {
dev->srCache[i].object = NULL;
dev->srCache[i].lastUse = 0;
dev->srCache[i].dirty = 0;
- dev->srCache[i].data = YMALLOC_DMA(dev->nDataBytesPerChunk);
+ dev->srCache[i].data = buf = YMALLOC_DMA(dev->param.totalBytesPerChunk);
}
+ if (!buf)
+ init_failed = 1;
+
dev->srLastUse = 0;
}
dev->cacheHits = 0;
-
- dev->gcCleanupList = YMALLOC(dev->nChunksPerBlock * sizeof(__u32));
- if (dev->isYaffs2) {
- dev->useHeaderFileSize = 1;
+ if (!init_failed) {
+ dev->gcCleanupList = YMALLOC(dev->param.nChunksPerBlock * sizeof(__u32));
+ if (!dev->gcCleanupList)
+ init_failed = 1;
}
- yaffs_InitialiseBlocks(dev);
+ if (dev->param.isYaffs2)
+ dev->param.useHeaderFileSize = 1;
+
+ if (!init_failed && !yaffs_InitialiseBlocks(dev))
+ init_failed = 1;
+
yaffs_InitialiseTnodes(dev);
yaffs_InitialiseObjects(dev);
- yaffs_CreateInitialDirectories(dev);
+ if (!init_failed && !yaffs_CreateInitialDirectories(dev))
+ init_failed = 1;
- /* Now scan the flash. */
- if (dev->isYaffs2) {
- if(yaffs_CheckpointRestore(dev)) {
- T(YAFFS_TRACE_ALWAYS,
- (TSTR("yaffs: restored from checkpoint" TENDSTR)));
- } else {
+ if (!init_failed) {
+ /* Now scan the flash. */
+ if (dev->param.isYaffs2) {
+ if (yaffs_CheckpointRestore(dev)) {
+ yaffs_CheckObjectDetailsLoaded(dev->rootDir);
+ T(YAFFS_TRACE_ALWAYS,
+ (TSTR("yaffs: restored from checkpoint" TENDSTR)));
+ } else {
- /* Clean up the mess caused by an aborted checkpoint load
- * and scan backwards.
- */
- yaffs_DeinitialiseBlocks(dev);
- yaffs_DeinitialiseTnodes(dev);
- yaffs_DeinitialiseObjects(dev);
- yaffs_InitialiseBlocks(dev);
- yaffs_InitialiseTnodes(dev);
- yaffs_InitialiseObjects(dev);
- yaffs_CreateInitialDirectories(dev);
-
- yaffs_ScanBackwards(dev);
- }
- }else
- yaffs_Scan(dev);
+ /* Clean up the mess caused by an aborted checkpoint load
+ * and scan backwards.
+ */
+ yaffs_DeinitialiseBlocks(dev);
+ yaffs_DeinitialiseTnodes(dev);
+ yaffs_DeinitialiseObjects(dev);
+
+
+ dev->nErasedBlocks = 0;
+ dev->nFreeChunks = 0;
+ dev->allocationBlock = -1;
+ dev->allocationPage = -1;
+ dev->nDeletedFiles = 0;
+ dev->nUnlinkedFiles = 0;
+ dev->nBackgroundDeletions = 0;
+ dev->oldestDirtySequence = 0;
+
+ if (!init_failed && !yaffs_InitialiseBlocks(dev))
+ init_failed = 1;
+
+ yaffs_InitialiseTnodes(dev);
+ yaffs_InitialiseObjects(dev);
+
+ if (!init_failed && !yaffs_CreateInitialDirectories(dev))
+ init_failed = 1;
+
+ if (!init_failed && !yaffs_ScanBackwards(dev))
+ init_failed = 1;
+ }
+ } else if (!yaffs_Scan(dev))
+ init_failed = 1;
+
+ yaffs_StripDeletedObjects(dev);
+ yaffs_FixHangingObjects(dev);
+ if(dev->param.emptyLostAndFound)
+ yaffs_EmptyLostAndFound(dev);
+ }
+
+ if (init_failed) {
+ /* Clean up the mess */
+ T(YAFFS_TRACE_TRACING,
+ (TSTR("yaffs: yaffs_GutsInitialise() aborted.\n" TENDSTR)));
+
+ yaffs_Deinitialise(dev);
+ return YAFFS_FAIL;
+ }
/* Zero out stats */
dev->nPageReads = 0;
dev->nRetiredBlocks = 0;
yaffs_VerifyFreeChunks(dev);
+ yaffs_VerifyBlocks(dev);
+
+ /* Clean up any aborted checkpoint data */
+ if(!dev->isCheckpointed && dev->blocksInCheckpoint > 0)
+ yaffs_InvalidateCheckpoint(dev);
T(YAFFS_TRACE_TRACING,
(TSTR("yaffs: yaffs_GutsInitialise() done.\n" TENDSTR)));
}
-void yaffs_Deinitialise(yaffs_Device * dev)
+void yaffs_Deinitialise(yaffs_Device *dev)
{
if (dev->isMounted) {
int i;
yaffs_DeinitialiseBlocks(dev);
yaffs_DeinitialiseTnodes(dev);
yaffs_DeinitialiseObjects(dev);
- if (dev->nShortOpCaches > 0) {
+ if (dev->param.nShortOpCaches > 0 &&
+ dev->srCache) {
- for (i = 0; i < dev->nShortOpCaches; i++) {
- YFREE(dev->srCache[i].data);
+ for (i = 0; i < dev->param.nShortOpCaches; i++) {
+ if (dev->srCache[i].data)
+ YFREE(dev->srCache[i].data);
+ dev->srCache[i].data = NULL;
}
YFREE(dev->srCache);
+ dev->srCache = NULL;
}
YFREE(dev->gcCleanupList);
- for (i = 0; i < YAFFS_N_TEMP_BUFFERS; i++) {
+ for (i = 0; i < YAFFS_N_TEMP_BUFFERS; i++)
YFREE(dev->tempBuffer[i].buffer);
- }
dev->isMounted = 0;
- }
+ if (dev->param.deinitialiseNAND)
+ dev->param.deinitialiseNAND(dev);
+ }
}
-static int yaffs_CountFreeChunks(yaffs_Device * dev)
+static int yaffs_CountFreeChunks(yaffs_Device *dev)
{
int nFree;
int b;
yaffs_BlockInfo *blk;
for (nFree = 0, b = dev->internalStartBlock; b <= dev->internalEndBlock;
- b++) {
+ b++) {
blk = yaffs_GetBlockInfo(dev, b);
switch (blk->blockState) {
case YAFFS_BLOCK_STATE_COLLECTING:
case YAFFS_BLOCK_STATE_FULL:
nFree +=
- (dev->nChunksPerBlock - blk->pagesInUse +
+ (dev->param.nChunksPerBlock - blk->pagesInUse +
blk->softDeletions);
break;
default:
break;
}
-
}
return nFree;
}
-int yaffs_GetNumberOfFreeChunks(yaffs_Device * dev)
+int yaffs_GetNumberOfFreeChunks(yaffs_Device *dev)
{
/* This is what we report to the outside world */
int nFree;
int nDirtyCacheChunks;
int blocksForCheckpoint;
+ int i;
#if 1
nFree = dev->nFreeChunks;
#endif
nFree += dev->nDeletedFiles;
-
+
/* Now count the number of dirty chunks in the cache and subtract those */
- {
- int i;
- for (nDirtyCacheChunks = 0, i = 0; i < dev->nShortOpCaches; i++) {
- if (dev->srCache[i].dirty)
- nDirtyCacheChunks++;
- }
+ for (nDirtyCacheChunks = 0, i = 0; i < dev->param.nShortOpCaches; i++) {
+ if (dev->srCache[i].dirty)
+ nDirtyCacheChunks++;
}
nFree -= nDirtyCacheChunks;
- nFree -= ((dev->nReservedBlocks + 1) * dev->nChunksPerBlock);
-
+ nFree -= ((dev->param.nReservedBlocks + 1) * dev->param.nChunksPerBlock);
+
/* Now we figure out how much to reserve for the checkpoint and report that... */
- blocksForCheckpoint = dev->nCheckpointReservedBlocks - dev->blocksInCheckpoint;
- if(blocksForCheckpoint < 0)
+ blocksForCheckpoint = yaffs_CalcCheckpointBlocksRequired(dev) - dev->blocksInCheckpoint;
+ if (blocksForCheckpoint < 0)
blocksForCheckpoint = 0;
-
- nFree -= (blocksForCheckpoint * dev->nChunksPerBlock);
+
+ nFree -= (blocksForCheckpoint * dev->param.nChunksPerBlock);
if (nFree < 0)
nFree = 0;
static int yaffs_freeVerificationFailures;
-static void yaffs_VerifyFreeChunks(yaffs_Device * dev)
+static void yaffs_VerifyFreeChunks(yaffs_Device *dev)
{
- int counted = yaffs_CountFreeChunks(dev);
+ int counted;
+ int difference;
- int difference = dev->nFreeChunks - counted;
+ if (yaffs_SkipVerification(dev))
+ return;
+
+ counted = yaffs_CountFreeChunks(dev);
+
+ difference = dev->nFreeChunks - counted;
if (difference) {
T(YAFFS_TRACE_ALWAYS,
/*---------------------------------------- YAFFS test code ----------------------*/
-#define yaffs_CheckStruct(structure,syze, name) \
- if(sizeof(structure) != syze) \
- { \
- T(YAFFS_TRACE_ALWAYS,(TSTR("%s should be %d but is %d\n" TENDSTR),\
- name,syze,sizeof(structure))); \
- return YAFFS_FAIL; \
- }
+#define yaffs_CheckStruct(structure, syze, name) \
+ do { \
+ if (sizeof(structure) != syze) { \
+ T(YAFFS_TRACE_ALWAYS, (TSTR("%s should be %d but is %d\n" TENDSTR),\
+ name, syze, (int) sizeof(structure))); \
+ return YAFFS_FAIL; \
+ } \
+ } while (0)
static int yaffs_CheckStructures(void)
{
-/* yaffs_CheckStruct(yaffs_Tags,8,"yaffs_Tags") */
-/* yaffs_CheckStruct(yaffs_TagsUnion,8,"yaffs_TagsUnion") */
-/* yaffs_CheckStruct(yaffs_Spare,16,"yaffs_Spare") */
+/* yaffs_CheckStruct(yaffs_Tags,8,"yaffs_Tags"); */
+/* yaffs_CheckStruct(yaffs_TagsUnion,8,"yaffs_TagsUnion"); */
+/* yaffs_CheckStruct(yaffs_Spare,16,"yaffs_Spare"); */
#ifndef CONFIG_YAFFS_TNODE_LIST_DEBUG
- yaffs_CheckStruct(yaffs_Tnode, 2 * YAFFS_NTNODES_LEVEL0, "yaffs_Tnode")
+/* yaffs_CheckStruct(yaffs_Tnode, 2 * YAFFS_NTNODES_LEVEL0, "yaffs_Tnode"); */
#endif
- yaffs_CheckStruct(yaffs_ObjectHeader, 512, "yaffs_ObjectHeader")
-
- return YAFFS_OK;
+#ifndef CONFIG_YAFFS_WINCE
+ yaffs_CheckStruct(yaffs_ObjectHeader, 512, "yaffs_ObjectHeader");
+#endif
+ return YAFFS_OK;
}
projects / yaffs2.git / blobdiff