/*
- * 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) 2002-2010 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 1.45 2006-11-14 03:07:17 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
-#include "yaffs_qsort.h"
-#endif
+
#include "yaffs_nand.h"
-#include "yaffs_checkptrw.h"
+#include "yaffs_yaffs1.h"
+#include "yaffs_yaffs2.h"
+#include "yaffs_bitmap.h"
+#include "yaffs_verify.h"
#include "yaffs_nand.h"
#include "yaffs_packedtags2.h"
+#include "yaffs_nameval.h"
+#include "yaffs_allocator.h"
-#ifdef CONFIG_YAFFS_WINCE
-void yfsd_LockYAFFS(BOOL fsLockOnly);
-void yfsd_UnlockYAFFS(BOOL fsLockOnly);
-#endif
-
-#define YAFFS_PASSIVE_GC_CHUNKS 2
+/* Note YAFFS_GC_GOOD_ENOUGH must be <= YAFFS_GC_PASSIVE_THRESHOLD */
+#define YAFFS_GC_GOOD_ENOUGH 2
+#define YAFFS_GC_PASSIVE_THRESHOLD 4
#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_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_WriteNewChunkWithTagsToNAND(yaffs_Device *dev,
+ const __u8 *buffer,
+ yaffs_ExtendedTags *tags,
+ int useReserve);
+
+
+static yaffs_Object *yaffs_CreateNewObject(yaffs_Device *dev, int number,
+ yaffs_ObjectType type);
-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_ApplyXMod(yaffs_Object *obj, char *buffer, yaffs_XAttrMod *xmod);
+
+static void yaffs_RemoveObjectFromDirectory(yaffs_Object *obj);
+static int yaffs_CheckStructures(void);
+static int yaffs_DoGenericObjectDeletion(yaffs_Object *in);
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_CheckObjectDetailsLoaded(yaffs_Object *in);
-static void yaffs_VerifyFreeChunks(yaffs_Device * dev);
+static void yaffs_InvalidateWholeChunkCache(yaffs_Object *in);
+static void yaffs_InvalidateChunkCache(yaffs_Object *object, int chunkId);
-#ifdef YAFFS_PARANOID
-static int yaffs_CheckFileSanity(yaffs_Object * in);
-#else
-#define yaffs_CheckFileSanity(in)
-#endif
+static int yaffs_FindChunkInFile(yaffs_Object *in, int chunkInInode,
+ yaffs_ExtendedTags *tags);
-static void yaffs_InvalidateWholeChunkCache(yaffs_Object * in);
-static void yaffs_InvalidateChunkCache(yaffs_Object * object, int chunkId);
+static int yaffs_VerifyChunkWritten(yaffs_Device *dev,
+ int chunkInNAND,
+ const __u8 *data,
+ yaffs_ExtendedTags *tags);
-static void yaffs_InvalidateCheckpoint(yaffs_Device *dev);
+static void yaffs_LoadNameFromObjectHeader(yaffs_Device *dev,YCHAR *name, const YCHAR *ohName, int bufferSize);
+static void yaffs_LoadObjectHeaderFromName(yaffs_Device *dev,YCHAR *ohName, const YCHAR *name);
/* 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;
-
+ __u32 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->nShortOpCaches; i++) {
- if( dev->srCache[i].data == buffer )
- return 1;
-
- }
+ for (i = 0; i < dev->param.nShortOpCaches; i++) {
+ if (dev->srCache[i].data == buffer)
+ return 1;
+ }
- if (buffer == dev->checkpointBuffer)
- return 1;
+ if (buffer == dev->checkpointBuffer)
+ return 1;
- T(YAFFS_TRACE_ALWAYS,
- (TSTR("yaffs: unmaged buffer detected.\n" TENDSTR)));
- return 0;
+ T(YAFFS_TRACE_ALWAYS,
+ (TSTR("yaffs: unmaged buffer detected.\n" TENDSTR)));
+ return 0;
}
/*
- * Chunk bitmap manipulations
+ * Verification code
*/
-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));
- YBUG();
- }
- return dev->chunkBits +
- (dev->chunkBitmapStride * (blk - dev->internalStartBlock));
-}
-
-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)
-{
- __u8 *blkBits = yaffs_BlockBits(dev, blk);
-
- blkBits[chunk / 8] &= ~(1 << (chunk & 7));
-}
-
-static Y_INLINE void yaffs_SetChunkBit(yaffs_Device * dev, int blk, int chunk)
-{
- __u8 *blkBits = yaffs_BlockBits(dev, blk);
-
- blkBits[chunk / 8] |= (1 << (chunk & 7));
-}
-static Y_INLINE int yaffs_CheckChunkBit(yaffs_Device * dev, int blk, int chunk)
-{
- __u8 *blkBits = yaffs_BlockBits(dev, blk);
- return (blkBits[chunk / 8] & (1 << (chunk & 7))) ? 1 : 0;
-}
-static Y_INLINE int yaffs_StillSomeChunkBits(yaffs_Device * dev, int blk)
-{
- __u8 *blkBits = yaffs_BlockBits(dev, blk);
- int i;
- for (i = 0; i < dev->chunkBitmapStride; i++) {
- if (*blkBits)
- return 1;
- blkBits++;
- }
- return 0;
-}
/*
* 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,
}
+
+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, 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);
+ yaffs2_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);
- }
+ if(dev->param.alwaysCheckErased)
+ bi->skipErasedCheck = 0;
+
+ 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);
}
return chunk;
}
+
+
/*
* 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);
+ yaffs2_InvalidateCheckpoint(dev);
- yaffs_MarkBlockBad(dev, blockInNAND);
+ yaffs2_ClearOldestDirtySequence(dev,bi);
+
+ 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)
{
+ dev=dev;
+ chunkInNAND=chunkInNAND;
+ data=data;
+ tags=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)
{
+ dev=dev;
+ chunkInNAND=chunkInNAND;
+ tags=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)
+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);
}
+void yaffs_SetObjectNameFromOH(yaffs_Object *obj, const yaffs_ObjectHeader *oh)
+{
+#ifdef CONFIG_YAFFS_AUTO_UNICODE
+ YCHAR tmpName[YAFFS_MAX_NAME_LENGTH+1];
+ memset(tmpName,0,sizeof(tmpName));
+ yaffs_LoadNameFromObjectHeader(obj->myDev,tmpName,oh->name,YAFFS_MAX_NAME_LENGTH+1);
+ yaffs_SetObjectName(obj,tmpName);
+#else
+ yaffs_SetObjectName(obj,oh->name);
+#endif
+}
+
/*-------------------- TNODES -------------------
* List of spare tnodes
* 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 int yaffs_CreateTnodes(yaffs_Device * dev, int nTnodes)
-{
- int i;
- int tnodeSize;
- yaffs_Tnode *newTnodes;
- __u8 *mem;
- yaffs_Tnode *curr;
- yaffs_Tnode *next;
- yaffs_TnodeList *tnl;
-
- 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 */
-
- newTnodes = YMALLOC(nTnodes * tnodeSize);
- mem = (__u8 *)newTnodes;
-
- if (!newTnodes) {
- T(YAFFS_TRACE_ERROR,
- (TSTR("yaffs: Could not allocate Tnodes" TENDSTR)));
- return YAFFS_FAIL;
- }
- /* Hook them into the free list */
-#if 0
- for (i = 0; i < nTnodes - 1; i++) {
- newTnodes[i].internal[0] = &newTnodes[i + 1];
-#ifdef CONFIG_YAFFS_TNODE_LIST_DEBUG
- newTnodes[i].internal[YAFFS_NTNODES_INTERNAL] = (void *)1;
-#endif
- }
- newTnodes[nTnodes - 1].internal[0] = dev->freeTnodes;
-#ifdef CONFIG_YAFFS_TNODE_LIST_DEBUG
- newTnodes[nTnodes - 1].internal[YAFFS_NTNODES_INTERNAL] = (void *)1;
-#endif
- dev->freeTnodes = newTnodes;
-#else
- /* New hookup for wide tnodes */
- for(i = 0; i < nTnodes -1; i++) {
- curr = (yaffs_Tnode *) &mem[i * tnodeSize];
- next = (yaffs_Tnode *) &mem[(i+1) * tnodeSize];
- curr->internal[0] = next;
+yaffs_Tnode *yaffs_GetTnode(yaffs_Device *dev)
+{
+ yaffs_Tnode *tn = yaffs_AllocateRawTnode(dev);
+ if (tn){
+ memset(tn, 0, dev->tnodeSize);
+ dev->nTnodes++;
}
-
- curr = (yaffs_Tnode *) &mem[(nTnodes - 1) * tnodeSize];
- curr->internal[0] = dev->freeTnodes;
- dev->freeTnodes = (yaffs_Tnode *)mem;
-
-#endif
-
- dev->nFreeTnodes += nTnodes;
- dev->nTnodesCreated += nTnodes;
-
- /* Now add this bunch of tnodes to a list for freeing up.
- * 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)));
+ dev->nCheckpointBlocksRequired = 0; /* force recalculation*/
- } else {
- tnl->tnodes = newTnodes;
- tnl->next = dev->allocatedTnodeList;
- dev->allocatedTnodeList = tnl;
- }
+ return tn;
+}
- T(YAFFS_TRACE_ALLOCATE, (TSTR("yaffs: Tnodes added" TENDSTR)));
+/* FreeTnode frees up a tnode and puts it back on the free list */
+static void yaffs_FreeTnode(yaffs_Device *dev, yaffs_Tnode *tn)
+{
+ yaffs_FreeRawTnode(dev,tn);
+ dev->nTnodes--;
+ dev->nCheckpointBlocksRequired = 0; /* force recalculation*/
+}
- return YAFFS_OK;
+static void yaffs_DeinitialiseTnodesAndObjects(yaffs_Device *dev)
+{
+ yaffs_DeinitialiseRawTnodesAndObjects(dev);
+ dev->nObjects = 0;
+ dev->nTnodes = 0;
}
-/* GetTnode gets us a clean tnode. Tries to make allocate more if we run out */
-static yaffs_Tnode *yaffs_GetTnodeRaw(yaffs_Device * dev)
+void yaffs_LoadLevel0Tnode(yaffs_Device *dev, yaffs_Tnode *tn, unsigned pos,
+ unsigned val)
{
- yaffs_Tnode *tn = NULL;
-
- /* If there are none left make more */
- if (!dev->freeTnodes) {
- yaffs_CreateTnodes(dev, YAFFS_ALLOCATION_NTNODES);
- }
+ __u32 *map = (__u32 *)tn;
+ __u32 bitInMap;
+ __u32 bitInWord;
+ __u32 wordInMap;
+ __u32 mask;
- if (dev->freeTnodes) {
- tn = dev->freeTnodes;
-#ifdef CONFIG_YAFFS_TNODE_LIST_DEBUG
- if (tn->internal[YAFFS_NTNODES_INTERNAL] != (void *)1) {
- /* Hoosterman, this thing looks like it isn't in the list */
- T(YAFFS_TRACE_ALWAYS,
- (TSTR("yaffs: Tnode list bug 1" TENDSTR)));
- }
-#endif
- dev->freeTnodes = dev->freeTnodes->internal[0];
- dev->nFreeTnodes--;
- }
+ pos &= YAFFS_TNODES_LEVEL0_MASK;
+ val >>= dev->chunkGroupBits;
- return tn;
-}
+ bitInMap = pos * dev->tnodeWidth;
+ wordInMap = bitInMap / 32;
+ bitInWord = bitInMap & (32 - 1);
-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);
+ mask = dev->tnodeMask << bitInWord;
- return tn;
-}
+ map[wordInMap] &= ~mask;
+ map[wordInMap] |= (mask & (val << bitInWord));
-/* FreeTnode frees up a tnode and puts it back on the free list */
-static void yaffs_FreeTnode(yaffs_Device * dev, yaffs_Tnode * tn)
-{
- if (tn) {
-#ifdef CONFIG_YAFFS_TNODE_LIST_DEBUG
- if (tn->internal[YAFFS_NTNODES_INTERNAL] != 0) {
- /* Hoosterman, this thing looks like it is already in the list */
- T(YAFFS_TRACE_ALWAYS,
- (TSTR("yaffs: Tnode list bug 2" TENDSTR)));
- }
- tn->internal[YAFFS_NTNODES_INTERNAL] = (void *)1;
-#endif
- tn->internal[0] = dev->freeTnodes;
- dev->freeTnodes = tn;
- dev->nFreeTnodes++;
+ if (dev->tnodeWidth > (32 - bitInWord)) {
+ bitInWord = (32 - bitInWord);
+ wordInMap++;;
+ mask = dev->tnodeMask >> (/*dev->tnodeWidth -*/ bitInWord);
+ map[wordInMap] &= ~mask;
+ map[wordInMap] |= (mask & (val >> bitInWord));
}
}
-static void yaffs_DeinitialiseTnodes(yaffs_Device * dev)
+__u32 yaffs_GetChunkGroupBase(yaffs_Device *dev, yaffs_Tnode *tn,
+ unsigned pos)
{
- /* Free the list of allocated tnodes */
- yaffs_TnodeList *tmp;
+ __u32 *map = (__u32 *)tn;
+ __u32 bitInMap;
+ __u32 bitInWord;
+ __u32 wordInMap;
+ __u32 val;
- while (dev->allocatedTnodeList) {
- tmp = dev->allocatedTnodeList->next;
+ pos &= YAFFS_TNODES_LEVEL0_MASK;
- YFREE(dev->allocatedTnodeList->tnodes);
- YFREE(dev->allocatedTnodeList);
- dev->allocatedTnodeList = tmp;
+ bitInMap = pos * dev->tnodeWidth;
+ wordInMap = bitInMap / 32;
+ bitInWord = bitInMap & (32 - 1);
- }
+ val = map[wordInMap] >> bitInWord;
- dev->freeTnodes = NULL;
- dev->nFreeTnodes = 0;
-}
+ if (dev->tnodeWidth > (32 - bitInWord)) {
+ bitInWord = (32 - bitInWord);
+ wordInMap++;;
+ val |= (map[wordInMap] << bitInWord);
+ }
-static void yaffs_InitialiseTnodes(yaffs_Device * dev)
-{
- dev->allocatedTnodeList = NULL;
- dev->freeTnodes = NULL;
- dev->nFreeTnodes = 0;
- dev->nTnodesCreated = 0;
+ val &= dev->tnodeMask;
+ val <<= dev->chunkGroupBits;
+ return val;
}
-
-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;
-}
-
-/* ------------------- End of individual tnode manipulation -----------------*/
+/* ------------------- End of individual tnode manipulation -----------------*/
/* ---------Functions to manipulate the look-up tree (made up of tnodes) ------
* The look up tree is represented by the top tnode and the number of topLevel
*/
/* FindLevel0Tnode finds the level 0 tnode, if one exists. */
-static yaffs_Tnode *yaffs_FindLevel0Tnode(yaffs_Device * dev,
- yaffs_FileStructure * fStruct,
- __u32 chunkId)
+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;
+ dev=dev;
+
/* 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)
-{
+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++;
return -1;
}
-
+#if 0
+/* Experimental code not being used yet. Might speed up file deletion */
/* DeleteWorker scans backwards through the tnode tree and deletes all the
- * chunks and tnodes in the file
- * Returns 1 if the tree was deleted.
+ * chunks and tnodes in the file.
+ * 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)
-{
+#endif
+static void yaffs_SoftDeleteChunk(yaffs_Device *dev, int chunk)
+{
yaffs_BlockInfo *theBlock;
+ unsigned blockNo;
T(YAFFS_TRACE_DELETION, (TSTR("soft delete chunk %d" TENDSTR), chunk));
- theBlock = yaffs_GetBlockInfo(dev, chunk / dev->nChunksPerBlock);
+ blockNo = chunk / dev->param.nChunksPerBlock;
+ theBlock = yaffs_GetBlockInfo(dev, blockNo);
if (theBlock) {
theBlock->softDeletions++;
dev->nFreeChunks++;
+ yaffs2_UpdateOldestDirtySequence(dev, blockNo, theBlock);
}
}
* 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 = dev->tnodeSize/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) {
/*-------------------- End of File Structure functions.-------------------*/
-/* yaffs_CreateFreeObjects creates a bunch more objects and
- * adds them to the object free list.
- */
-static int yaffs_CreateFreeObjects(yaffs_Device * dev, int nObjects)
-{
- int i;
- yaffs_Object *newObjects;
- yaffs_ObjectList *list;
-
- if (nObjects < 1)
- return YAFFS_OK;
-
- /* make these things */
- newObjects = YMALLOC(nObjects * sizeof(yaffs_Object));
-
- if (!newObjects) {
- 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]);
- }
-
- newObjects[nObjects - 1].siblings.next = (void *)dev->freeObjects;
- dev->freeObjects = newObjects;
- dev->nFreeObjects += nObjects;
- dev->nObjectsCreated += nObjects;
-
- /* 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;
- }
-
- 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;
+ yaffs_Object *obj = yaffs_AllocateRawObject(dev);
- /* If there are none left make more */
- if (!dev->freeObjects) {
- yaffs_CreateFreeObjects(dev, YAFFS_ALLOCATION_NOBJECTS);
- }
-
- if (dev->freeObjects) {
- tn = dev->freeObjects;
- dev->freeObjects =
- (yaffs_Object *) (dev->freeObjects->siblings.next);
- dev->nFreeObjects--;
+ if (obj) {
+ dev->nObjects++;
/* Now sweeten it up... */
- memset(tn, 0, sizeof(yaffs_Object));
- tn->myDev = dev;
- tn->chunkId = -1;
- tn->variantType = YAFFS_OBJECT_TYPE_UNKNOWN;
- INIT_LIST_HEAD(&(tn->hardLinks));
- INIT_LIST_HEAD(&(tn->hashLink));
- INIT_LIST_HEAD(&tn->siblings);
+ memset(obj, 0, sizeof(yaffs_Object));
+ obj->beingCreated = 1;
+
+ obj->myDev = dev;
+ obj->hdrChunk = 0;
+ obj->variantType = YAFFS_OBJECT_TYPE_UNKNOWN;
+ YINIT_LIST_HEAD(&(obj->hardLinks));
+ YINIT_LIST_HEAD(&(obj->hashLink));
+ YINIT_LIST_HEAD(&obj->siblings);
+
+
+ /* Now make the directory sane */
+ if (dev->rootDir) {
+ obj->parent = dev->rootDir;
+ ylist_add(&(obj->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) {
- yaffs_AddObjectToDirectory(dev->lostNFoundDir, tn);
- }
+ if (dev->lostNFoundDir)
+ yaffs_AddObjectToDirectory(dev->lostNFoundDir, obj);
+
+ obj->beingCreated = 0;
}
- return tn;
+ dev->nCheckpointBlocksRequired = 0; /* force recalculation*/
+
+ return obj;
}
-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 *obj)
{
int bucket;
- yaffs_Device *dev = tn->myDev;
+ yaffs_Device *dev = obj->myDev;
/* If it is still linked into the bucket list, free from the list */
- if (!list_empty(&tn->hashLink)) {
- list_del_init(&tn->hashLink);
- bucket = yaffs_HashFunction(tn->objectId);
+ if (!ylist_empty(&obj->hashLink)) {
+ ylist_del_init(&obj->hashLink);
+ bucket = yaffs_HashFunction(obj->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 *obj)
{
+ yaffs_Device *dev = obj->myDev;
+
+ T(YAFFS_TRACE_OS, (TSTR("FreeObject %p inode %p"TENDSTR), obj, obj->myInode));
+
+ if (!obj)
+ YBUG();
+ if (obj->parent)
+ YBUG();
+ if (!ylist_empty(&obj->siblings))
+ YBUG();
- yaffs_Device *dev = tn->myDev;
-#ifdef __KERNEL__
- if (tn->myInode) {
+ if (obj->myInode) {
/* We're still hooked up to a cached inode.
* Don't delete now, but mark for later deletion
*/
- tn->deferedFree = 1;
+ obj->deferedFree = 1;
return;
}
-#endif
- yaffs_UnhashObject(tn);
+ yaffs_UnhashObject(obj);
- /* Link into the free list. */
- tn->siblings.next = (struct list_head *)(dev->freeObjects);
- dev->freeObjects = tn;
- dev->nFreeObjects++;
+ yaffs_FreeRawObject(dev,obj);
+ dev->nObjects--;
+ 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)
-{
- /* Free the list of allocated Objects */
-
- yaffs_ObjectList *tmp;
-
- while (dev->allocatedObjectList) {
- tmp = dev->allocatedObjectList->next;
- YFREE(dev->allocatedObjectList->objects);
- YFREE(dev->allocatedObjectList);
-
- dev->allocatedObjectList = tmp;
- }
-
- dev->freeObjects = NULL;
- dev->nFreeObjects = 0;
}
-static void yaffs_InitialiseObjects(yaffs_Device * dev)
+static void yaffs_InitialiseTnodesAndObjects(yaffs_Device *dev)
{
int i;
- dev->allocatedObjectList = NULL;
- dev->freeObjects = NULL;
- dev->nFreeObjects = 0;
+ dev->nObjects = 0;
+ dev->nTnodes = 0;
+
+ yaffs_InitialiseRawTnodesAndObjects(dev);
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);
+ YINIT_LIST_HEAD(&theObject->variant.directoryVariant.
+ dirty);
break;
case YAFFS_OBJECT_TYPE_SYMLINK:
case YAFFS_OBJECT_TYPE_HARDLINK:
return theObject;
}
-static yaffs_Object *yaffs_FindOrCreateObjectByNumber(yaffs_Device * dev,
- int number,
- yaffs_ObjectType type)
+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)
+
+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:
break;
}
- if (yaffs_UpdateObjectHeader(in, name, 0, 0, 0) < 0) {
+ if (yaffs_UpdateObjectHeader(in, name, 0, 0, 0, NULL) < 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, NULL) >= 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->gcDisable=1;
yaffs_ChangeObjectName(obj, newDir, newName, force,
- existingTarget->objectId);
+ existingTarget->objectId);
+ existingTarget->isShadowed = 1;
yaffs_UnlinkObject(existingTarget);
+ dev->gcDisable=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)
+void yaffs_BlockBecameDirty(yaffs_Device *dev, int blockNo)
{
- int i;
- __u32 seq;
- yaffs_BlockInfo *b;
-
- if (!dev->isYaffs2)
- return 1; /* disqualification only applies to yaffs2. */
+ yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, blockNo);
- if (!bi->hasShrinkHeader)
- return 1; /* can gc */
+ int erasedOk = 0;
- /* Find the oldest dirty sequence number if we don't know it and save it
- * so we don't have to keep recomputing it.
+ /* If the block is still healthy erase it and mark as clean.
+ * If the block has had a data failure, then retire it.
*/
- if (!dev->oldestDirtySequence) {
- seq = dev->sequenceNumber;
-
- for (i = dev->internalStartBlock; i <= dev->internalEndBlock;
- i++) {
- b = yaffs_GetBlockInfo(dev, i);
- if (b->blockState == YAFFS_BLOCK_STATE_FULL &&
- (b->pagesInUse - b->softDeletions) <
- dev->nChunksPerBlock && b->sequenceNumber < seq) {
- seq = b->sequenceNumber;
- }
- }
- dev->oldestDirtySequence = seq;
- }
- /* Can't do gc of this block if there are any blocks older than this one that have
- * discarded pages.
- */
- return (bi->sequenceNumber <= dev->oldestDirtySequence);
+ T(YAFFS_TRACE_GC | YAFFS_TRACE_ERASE,
+ (TSTR("yaffs_BlockBecameDirty block %d state %d %s"TENDSTR),
+ blockNo, bi->blockState, (bi->needsRetiring) ? "needs retiring" : ""));
-}
+ yaffs2_ClearOldestDirtySequence(dev,bi);
-/* FindDiretiestBlock is used to select the dirtiest block (or close enough)
- * for garbage collection.
- */
+ bi->blockState = YAFFS_BLOCK_STATE_DIRTY;
-static int yaffs_FindBlockForGarbageCollection(yaffs_Device * dev,
- int aggressive)
-{
+ /* If this is the block being garbage collected then stop gc'ing this block */
+ if(blockNo == dev->gcBlock)
+ dev->gcBlock = 0;
- int b = dev->currentDirtyChecker;
+ /* If this block is currently the best candidate for gc then drop as a candidate */
+ if(blockNo == dev->gcDirtiest){
+ dev->gcDirtiest = 0;
+ dev->gcPagesInUse = 0;
+ }
- int i;
- int iterations;
- int dirtiest = -1;
- int pagesInUse;
- 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++){
-
- bi = yaffs_GetBlockInfo(dev, i);
- if(bi->gcPrioritise) {
- pendingPrioritisedExist = 1;
- if(bi->blockState == YAFFS_BLOCK_STATE_FULL &&
- yaffs_BlockNotDisqualifiedFromGC(dev, bi)){
- pagesInUse = (bi->pagesInUse - bi->softDeletions);
- dirtiest = i;
- prioritised = 1;
- aggressive = 1; /* Fool the non-aggressive skip logiv below */
- }
- }
+ if (!bi->needsRetiring) {
+ yaffs2_InvalidateCheckpoint(dev);
+ erasedOk = yaffs_EraseBlockInNAND(dev, blockNo);
+ if (!erasedOk) {
+ dev->nErasureFailures++;
+ T(YAFFS_TRACE_ERROR | YAFFS_TRACE_BAD_BLOCKS,
+ (TSTR("**>> Erasure failed %d" TENDSTR), blockNo));
}
-
- if(!pendingPrioritisedExist) /* None found, so we can clear this */
- dev->hasPendingPrioritisedGCs = 0;
}
- /* If we're doing aggressive GC then we are happy to take a less-dirty block, and
- * search harder.
- * else (we're doing a leasurely gc), then we only bother to do this if the
- * block has only a few pages in use.
- */
-
- nonAggressiveSkip--;
-
- if (!aggressive && (nonAggressiveSkip > 0)) {
- return -1;
+ if (erasedOk &&
+ ((yaffs_traceMask & YAFFS_TRACE_ERASE) || !yaffs_SkipVerification(dev))) {
+ int i;
+ for (i = 0; i < dev->param.nChunksPerBlock; i++) {
+ if (!yaffs_CheckChunkErased
+ (dev, blockNo * dev->param.nChunksPerBlock + i)) {
+ T(YAFFS_TRACE_ERROR,
+ (TSTR
+ (">>Block %d erasure supposedly OK, but chunk %d not erased"
+ TENDSTR), blockNo, i));
+ }
+ }
}
- if(!prioritised)
- pagesInUse =
- (aggressive) ? dev->nChunksPerBlock : YAFFS_PASSIVE_GC_CHUNKS + 1;
+ if (erasedOk) {
+ /* Clean it up... */
+ bi->blockState = YAFFS_BLOCK_STATE_EMPTY;
+ bi->sequenceNumber = 0;
+ dev->nErasedBlocks++;
+ bi->pagesInUse = 0;
+ bi->softDeletions = 0;
+ bi->hasShrinkHeader = 0;
+ bi->skipErasedCheck = 1; /* This is clean, so no need to check */
+ bi->gcPrioritise = 0;
+ yaffs_ClearChunkBits(dev, blockNo);
- if (aggressive) {
- iterations =
- dev->internalEndBlock - dev->internalStartBlock + 1;
+ T(YAFFS_TRACE_ERASE,
+ (TSTR("Erased block %d" TENDSTR), blockNo));
} else {
- iterations =
- dev->internalEndBlock - dev->internalStartBlock + 1;
- iterations = iterations / 16;
- if (iterations > 200) {
- iterations = 200;
- }
- }
+ dev->nFreeChunks -= dev->param.nChunksPerBlock; /* We lost a block of free space */
- for (i = 0; i <= iterations && pagesInUse > 0 && !prioritised; i++) {
- b++;
- if (b < dev->internalStartBlock || b > dev->internalEndBlock) {
- b = dev->internalStartBlock;
- }
+ yaffs_RetireBlock(dev, blockNo);
+ T(YAFFS_TRACE_ERROR | YAFFS_TRACE_BAD_BLOCKS,
+ (TSTR("**>> Block %d retired" TENDSTR), blockNo));
+ }
+}
- if (b < dev->internalStartBlock || b > dev->internalEndBlock) {
- T(YAFFS_TRACE_ERROR,
- (TSTR("**>> Block %d is not valid" TENDSTR), b));
- YBUG();
- }
-
- 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)) {
- dirtiest = b;
- pagesInUse = (bi->pagesInUse - bi->softDeletions);
- }
- }
-
- dev->currentDirtyChecker = b;
-
- if (dirtiest > 0) {
- T(YAFFS_TRACE_GC,
- (TSTR("GC Selected block %d with %d free, prioritised:%d" TENDSTR), dirtiest,
- dev->nChunksPerBlock - pagesInUse,prioritised));
- }
-
- dev->oldestDirtySequence = 0;
-
- if (dirtiest > 0) {
- nonAggressiveSkip = 4;
- }
-
- return dirtiest;
-}
-
-static void yaffs_BlockBecameDirty(yaffs_Device * dev, int blockNo)
-{
- yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, blockNo);
-
- int erasedOk = 0;
-
- /* 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) {
- yaffs_InvalidateCheckpoint(dev);
- erasedOk = yaffs_EraseBlockInNAND(dev, blockNo);
- if (!erasedOk) {
- dev->nErasureFailures++;
- T(YAFFS_TRACE_ERROR | YAFFS_TRACE_BAD_BLOCKS,
- (TSTR("**>> Erasure failed %d" TENDSTR), blockNo));
- }
- }
-
- if (erasedOk && (yaffs_traceMask & YAFFS_TRACE_ERASE)) {
- int i;
- for (i = 0; i < dev->nChunksPerBlock; i++) {
- if (!yaffs_CheckChunkErased
- (dev, blockNo * dev->nChunksPerBlock + i)) {
- T(YAFFS_TRACE_ERROR,
- (TSTR
- (">>Block %d erasure supposedly OK, but chunk %d not erased"
- TENDSTR), blockNo, i));
- }
- }
- }
-
- if (erasedOk) {
- /* Clean it up... */
- bi->blockState = YAFFS_BLOCK_STATE_EMPTY;
- dev->nErasedBlocks++;
- bi->pagesInUse = 0;
- bi->softDeletions = 0;
- bi->hasShrinkHeader = 0;
- bi->skipErasedCheck = 1; /* This is clean, so no need to check */
- bi->gcPrioritise = 0;
- yaffs_ClearChunkBits(dev, blockNo);
-
- T(YAFFS_TRACE_ERASE,
- (TSTR("Erased block %d" TENDSTR), blockNo));
- } else {
- dev->nFreeChunks -= dev->nChunksPerBlock; /* We lost a block of free space */
-
- yaffs_RetireBlock(dev, blockNo);
- T(YAFFS_TRACE_ERROR | YAFFS_TRACE_BAD_BLOCKS,
- (TSTR("**>> Block %d retired" TENDSTR), blockNo));
- }
-}
-
-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)
+/*
+ * Check if there's space to allocate...
+ * Thinks.... do we need top make this ths same as yaffs_GetFreeChunks()?
+ */
+int yaffs_CheckSpaceForAllocation(yaffs_Device *dev, int nChunks)
{
int reservedChunks;
- int reservedBlocks = dev->nReservedBlocks;
+ int reservedBlocks = dev->param.nReservedBlocks;
int checkpointBlocks;
-
- checkpointBlocks = dev->nCheckpointReservedBlocks - dev->blocksInCheckpoint;
- if(checkpointBlocks < 0)
- checkpointBlocks = 0;
-
- reservedChunks = ((reservedBlocks + checkpointBlocks) * dev->nChunksPerBlock);
-
- return (dev->nFreeChunks > reservedChunks);
+
+ checkpointBlocks = yaffs2_CalcCheckpointBlocksRequired(dev);
+
+ reservedChunks = ((reservedBlocks + checkpointBlocks) * dev->param.nChunksPerBlock);
+
+ return (dev->nFreeChunks > (reservedChunks + nChunks));
}
-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;
dev->allocationPage = 0;
}
- if (!useReserve && !yaffs_CheckSpaceForAllocation(dev)) {
+ if (!useReserve && !yaffs_CheckSpaceForAllocation(dev, 1)) {
/* Not enough space to allocate unless we're allowed to use the reserve. */
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.
+ */
+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;
-
- dev->isDoingGC = 1;
+ dev->gcDisable = 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 : 5;
+ 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.
*/
+
+ /* Free chunks already includes softdeleted chunks.
+ * How ever this chunk is going to soon be really deleted
+ * which will increment free chunks.
+ * We have to decrement free chunks so this works out properly.
+ */
+ dev->nFreeChunks--;
+ bi->softDeletions--;
object->nDataChunks--;
if (object->nDataChunks <= 0) {
/* remeber to clean up the object */
- dev->gcCleanupList[cleanups] =
+ dev->gcCleanupList[dev->nCleanups] =
tags.objectId;
- cleanups++;
+ dev->nCleanups++;
}
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;
- }
- newChunk =
- yaffs_WriteNewChunkWithTagsToNAND(dev, buffer, &tags, 1);
+ oh->shadowsObject = 0;
+ oh->inbandShadowsObject = 0;
+ tags.extraShadows = 0;
+
+ /* Update file size */
+ if(object->variantType == YAFFS_OBJECT_TYPE_FILE){
+ oh->fileSize = object->variant.fileVariant.fileSize;
+ tags.extraFileLength = oh->fileSize;
+ }
+
+ 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__);
}
}
yaffs_ReleaseTempBuffer(dev, buffer, __LINE__);
+
+ }
+
+ yaffs_VerifyCollectedBlock(dev, bi, block);
+
+
+
+ if (bi->blockState == YAFFS_BLOCK_STATE_COLLECTING) {
+ /*
+ * The gc did not complete. Set block state back to FULL
+ * because checkpointing does not restore gc.
+ */
+ bi->blockState = YAFFS_BLOCK_STATE_FULL;
+ } else {
+ /* The gc completed. */
/* Do any required cleanups */
- for (i = 0; i < cleanups; i++) {
+ for (i = 0; i < dev->nCleanups; i++) {
/* Time to delete the file too */
object =
yaffs_FindObjectByNumber(dev,
}
+
+ 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 = 0;
+ dev->gcChunk = 0;
+ dev->nCleanups = 0;
}
- if (chunksBefore >= (chunksAfter = yaffs_GetErasedChunks(dev))) {
- T(YAFFS_TRACE_GC,
- (TSTR
- ("gc did not increase free chunks before %d after %d"
- TENDSTR), chunksBefore, chunksAfter));
+ dev->gcDisable = 0;
+
+ return retVal;
+}
+
+/*
+ * FindBlockForgarbageCollection is used to select the dirtiest block (or close enough)
+ * for garbage collection.
+ */
+
+static unsigned yaffs_FindBlockForGarbageCollection(yaffs_Device *dev,
+ int aggressive,
+ int background)
+{
+ int i;
+ int iterations;
+ unsigned selected = 0;
+ int prioritised = 0;
+ int prioritisedExists = 0;
+ yaffs_BlockInfo *bi;
+ int threshold;
+
+ /* First let's see if we need to grab a prioritised block */
+ if (dev->hasPendingPrioritisedGCs && !aggressive) {
+ dev->gcDirtiest = 0;
+ bi = dev->blockInfo;
+ for (i = dev->internalStartBlock;
+ i <= dev->internalEndBlock && !selected;
+ i++) {
+
+ if (bi->gcPrioritise) {
+ prioritisedExists = 1;
+ if (bi->blockState == YAFFS_BLOCK_STATE_FULL &&
+ yaffs2_BlockNotDisqualifiedFromGC(dev, bi)) {
+ selected = i;
+ prioritised = 1;
+ }
+ }
+ bi++;
+ }
+
+ /*
+ * If there is a prioritised block and none was selected then
+ * this happened because there is at least one old dirty block gumming
+ * up the works. Let's gc the oldest dirty block.
+ */
+
+ if(prioritisedExists &&
+ !selected &&
+ dev->oldestDirtyBlock > 0)
+ selected = dev->oldestDirtyBlock;
+
+ if (!prioritisedExists) /* None found, so we can clear this */
+ dev->hasPendingPrioritisedGCs = 0;
}
- dev->isDoingGC = 0;
+ /* If we're doing aggressive GC then we are happy to take a less-dirty block, and
+ * search harder.
+ * else (we're doing a leasurely gc), then we only bother to do this if the
+ * block has only a few pages in use.
+ */
- return YAFFS_OK;
+ if (!selected){
+ int pagesUsed;
+ int nBlocks = dev->internalEndBlock - dev->internalStartBlock + 1;
+ if (aggressive){
+ threshold = dev->param.nChunksPerBlock;
+ iterations = nBlocks;
+ } else {
+ int maxThreshold;
+
+ if(background)
+ maxThreshold = dev->param.nChunksPerBlock/2;
+ else
+ maxThreshold = dev->param.nChunksPerBlock/8;
+
+ if(maxThreshold < YAFFS_GC_PASSIVE_THRESHOLD)
+ maxThreshold = YAFFS_GC_PASSIVE_THRESHOLD;
+
+ threshold = background ?
+ (dev->gcNotDone + 2) * 2 : 0;
+ if(threshold <YAFFS_GC_PASSIVE_THRESHOLD)
+ threshold = YAFFS_GC_PASSIVE_THRESHOLD;
+ if(threshold > maxThreshold)
+ threshold = maxThreshold;
+
+ iterations = nBlocks / 16 + 1;
+ if (iterations > 100)
+ iterations = 100;
+ }
+
+ for (i = 0;
+ i < iterations &&
+ (dev->gcDirtiest < 1 ||
+ dev->gcPagesInUse > YAFFS_GC_GOOD_ENOUGH);
+ i++) {
+ dev->gcBlockFinder++;
+ if (dev->gcBlockFinder < dev->internalStartBlock ||
+ dev->gcBlockFinder > dev->internalEndBlock)
+ dev->gcBlockFinder = dev->internalStartBlock;
+
+ bi = yaffs_GetBlockInfo(dev, dev->gcBlockFinder);
+
+ pagesUsed = bi->pagesInUse - bi->softDeletions;
+
+ if (bi->blockState == YAFFS_BLOCK_STATE_FULL &&
+ pagesUsed < dev->param.nChunksPerBlock &&
+ (dev->gcDirtiest < 1 || pagesUsed < dev->gcPagesInUse) &&
+ yaffs2_BlockNotDisqualifiedFromGC(dev, bi)) {
+ dev->gcDirtiest = dev->gcBlockFinder;
+ dev->gcPagesInUse = pagesUsed;
+ }
+ }
+
+ if(dev->gcDirtiest > 0 && dev->gcPagesInUse <= threshold)
+ selected = dev->gcDirtiest;
+ }
+
+ /*
+ * If nothing has been selected for a while, try selecting the oldest dirty
+ * because that's gumming up the works.
+ */
+
+ if(!selected && dev->param.isYaffs2 &&
+ dev->gcNotDone >= ( background ? 10 : 20)){
+ yaffs2_FindOldestDirtySequence(dev);
+ if(dev->oldestDirtyBlock > 0) {
+ selected = dev->oldestDirtyBlock;
+ dev->gcDirtiest = selected;
+ dev->oldestDirtyGCs++;
+ bi = yaffs_GetBlockInfo(dev, selected);
+ dev->gcPagesInUse = bi->pagesInUse - bi->softDeletions;
+ } else
+ dev->gcNotDone = 0;
+ }
+
+ if(selected){
+ T(YAFFS_TRACE_GC,
+ (TSTR("GC Selected block %d with %d free, prioritised:%d" TENDSTR),
+ selected,
+ dev->param.nChunksPerBlock - dev->gcPagesInUse,
+ prioritised));
+
+ dev->nGCBlocks++;
+ if(background)
+ dev->backgroundGCs++;
+
+ dev->gcDirtiest = 0;
+ dev->gcPagesInUse = 0;
+ dev->gcNotDone = 0;
+ if(dev->refreshSkip > 0)
+ dev->refreshSkip--;
+ } else{
+ dev->gcNotDone++;
+ T(YAFFS_TRACE_GC,
+ (TSTR("GC none: finder %d skip %d threshold %d dirtiest %d using %d oldest %d%s" TENDSTR),
+ dev->gcBlockFinder, dev->gcNotDone,
+ threshold,
+ dev->gcDirtiest, dev->gcPagesInUse,
+ dev->oldestDirtyBlock,
+ background ? " bg" : ""));
+ }
+
+ return selected;
}
/* 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 background)
{
- int block;
- int aggressive;
+ int aggressive = 0;
int gcOk = YAFFS_OK;
int maxTries = 0;
-
+ int minErased;
+ int erasedChunks;
int checkpointBlockAdjust;
- if (dev->isDoingGC) {
+ if(dev->param.gcControl &&
+ (dev->param.gcControl(dev) & 1) == 0)
+ return YAFFS_OK;
+
+ if (dev->gcDisable) {
/* 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.
+ * We'll only see looping here if the collection does not increase space.
*/
do {
maxTries++;
-
- checkpointBlockAdjust = (dev->nCheckpointReservedBlocks - dev->blocksInCheckpoint);
- if(checkpointBlockAdjust < 0)
- checkpointBlockAdjust = 0;
- if (dev->nErasedBlocks < (dev->nReservedBlocks + checkpointBlockAdjust)) {
- /* We need a block soon...*/
+ checkpointBlockAdjust = yaffs2_CalcCheckpointBlocksRequired(dev);
+
+ minErased = dev->param.nReservedBlocks + checkpointBlockAdjust + 1;
+ erasedChunks = dev->nErasedBlocks * dev->param.nChunksPerBlock;
+
+ /* If we need a block soon then do aggressive gc.*/
+ if (dev->nErasedBlocks < minErased)
aggressive = 1;
- } else {
- /* We're in no hurry */
- aggressive = 0;
+ else {
+ if(!background && erasedChunks > (dev->nFreeChunks / 4))
+ break;
+
+ if(dev->gcSkip > 20)
+ dev->gcSkip = 20;
+ if(erasedChunks < dev->nFreeChunks/2 ||
+ dev->gcSkip < 1 ||
+ background)
+ aggressive = 0;
+ else {
+ dev->gcSkip--;
+ break;
+ }
}
- block = yaffs_FindBlockForGarbageCollection(dev, aggressive);
+ dev->gcSkip = 5;
- if (block > 0) {
- dev->garbageCollections++;
- if (!aggressive) {
- dev->passiveGarbageCollections++;
- }
+ /* 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 = yaffs2_FindRefreshBlock(dev);
+ dev->gcChunk = 0;
+ dev->nCleanups=0;
+ }
+ if (dev->gcBlock < 1) {
+ dev->gcBlock = yaffs_FindBlockForGarbageCollection(dev, aggressive, background);
+ dev->gcChunk = 0;
+ dev->nCleanups=0;
+ }
+
+ if (dev->gcBlock > 0) {
+ dev->allGCs++;
+ if (!aggressive)
+ dev->passiveGCs++;
T(YAFFS_TRACE_GC,
(TSTR
("yaffs: GC erasedBlocks %d aggressive %d" TENDSTR),
dev->nErasedBlocks, aggressive));
- gcOk = yaffs_GarbageCollectBlock(dev, block);
+ gcOk = yaffs_GarbageCollectBlock(dev, dev->gcBlock, aggressive);
}
- if (dev->nErasedBlocks < (dev->nReservedBlocks) && block > 0) {
+ if (dev->nErasedBlocks < (dev->param.nReservedBlocks) && dev->gcBlock > 0) {
T(YAFFS_TRACE_GC,
(TSTR
("yaffs: GC !!!no reclaim!!! erasedBlocks %d after try %d block %d"
- TENDSTR), dev->nErasedBlocks, maxTries, block));
+ TENDSTR), dev->nErasedBlocks, maxTries, dev->gcBlock));
}
- } while ((dev->nErasedBlocks < dev->nReservedBlocks) && (block > 0)
- && (maxTries < 2));
+ } while ((dev->nErasedBlocks < dev->param.nReservedBlocks) &&
+ (dev->gcBlock > 0) &&
+ (maxTries < 2));
return aggressive ? gcOk : YAFFS_OK;
}
+/*
+ * yaffs_BackgroundGarbageCollect()
+ * Garbage collects. Intended to be called from a background thread.
+ * Returns non-zero if at least half the free chunks are erased.
+ */
+int yaffs_BackgroundGarbageCollect(yaffs_Device *dev, unsigned urgency)
+{
+ int erasedChunks = dev->nErasedBlocks * dev->param.nChunksPerBlock;
+
+ T(YAFFS_TRACE_BACKGROUND, (TSTR("Background gc %u" TENDSTR),urgency));
+
+ yaffs_CheckGarbageCollection(dev, 1);
+ return erasedChunks > dev->nFreeChunks/2;
+}
+
/*------------------------- 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)
-{
- int chunk;
- int nChunks;
- int fSize;
- int failed = 0;
- int objId;
- yaffs_Tnode *tn;
- yaffs_Tags localTags;
- yaffs_Tags *tags = &localTags;
- int theChunk;
- int chunkDeleted;
-
- if (in->variantType != YAFFS_OBJECT_TYPE_FILE) {
- /* T(("Object not a file\n")); */
- return YAFFS_FAIL;
- }
-
- objId = in->objectId;
- fSize = in->variant.fileVariant.fileSize;
- nChunks =
- (fSize + in->myDev->nDataBytesPerChunk - 1) / in->myDev->nDataBytesPerChunk;
-
- for (chunk = 1; chunk <= nChunks; chunk++) {
- tn = yaffs_FindLevel0Tnode(in->myDev, &in->variant.fileVariant,
- chunk);
-
- if (tn) {
-
- theChunk = yaffs_GetChunkGroupBase(dev,tn,chunk);
-
- if (yaffs_CheckChunkBits
- (dev, theChunk / dev->nChunksPerBlock,
- theChunk % dev->nChunksPerBlock)) {
-
- yaffs_ReadChunkTagsFromNAND(in->myDev, theChunk,
- tags,
- &chunkDeleted);
- if (yaffs_TagsMatch
- (tags, in->objectId, chunk, chunkDeleted)) {
- /* found it; */
-
- }
- } else {
-
- failed = 1;
- }
-
- } else {
- /* T(("No level 0 found for %d\n", chunk)); */
- }
- }
-
- return failed ? YAFFS_FAIL : YAFFS_OK;
-}
-
-#endif
-static int yaffs_PutChunkIntoFile(yaffs_Object * in, int chunkInInode,
- int chunkInNAND, int inScan)
+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) {
- /* NB Right now existing chunk will not be real chunkId if the device >= 32MB
+ if (existingChunk > 0) {
+ /* NB Right now existing chunk will not be real chunkId if the chunk group size > 1
* thus we have to do a FindChunkInFile to get the real chunk id.
*
* We have a duplicate now we need to decide which one to use:
}
- /* 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 ||
- existingChunk <= 0 ||
+ (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);
+
+ yaffs2_UpdateOldestDirtySequence(dev, block, bi);
T(YAFFS_TRACE_DELETION,
(TSTR("line %d delete of chunk %d" TENDSTR), lyn, chunkId));
- if (markNAND &&
- bi->blockState != YAFFS_BLOCK_STATE_COLLECTING && !dev->isYaffs2) {
+ if (!dev->param.isYaffs2 && markNAND &&
+ bi->blockState != YAFFS_BLOCK_STATE_COLLECTING) {
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_Device *dev = in->myDev;
- yaffs_CheckGarbageCollection(dev);
+ yaffs_CheckGarbageCollection(dev,0);
- /* 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;
- newChunkId =
- yaffs_WriteNewChunkWithTagsToNAND(dev, buffer, &newTags,
+ 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);
+ yaffs_VerifyFileSanity(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 isShrink, int shadows)
+int yaffs_UpdateObjectHeader(yaffs_Object *in, const YCHAR *name, int force,
+ int isShrink, int shadows, yaffs_XAttrMod *xmod)
{
yaffs_BlockInfo *bi;
int newChunkId;
yaffs_ExtendedTags newTags;
+ yaffs_ExtendedTags oldTags;
+ const 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"));
+
- yaffs_CheckGarbageCollection(dev);
+ if (!in->fake ||
+ in == dev->rootDir || /* The rootDir should also be saved */
+ force || xmod) {
+
+ yaffs_CheckGarbageCollection(dev,0);
+ 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);
- memcpy(oldName, oh->name, sizeof(oh->name));
- }
+ buffer, &oldTags);
+
+ yaffs_VerifyObjectHeader(in, oh, &oldTags, 0);
- memset(buffer, 0xFF, dev->nDataBytesPerChunk);
+ memcpy(oldName, oh->name, sizeof(oh->name));
+ memset(buffer, 0xFF, sizeof(yaffs_ObjectHeader));
+ } else
+ memset(buffer, 0xFF, dev->nDataBytesPerChunk);
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) {
+ yaffs_LoadObjectHeaderFromName(dev,oh->name,name);
+ } 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;
}
+ /* process any xattrib modifications */
+ if(xmod)
+ yaffs_ApplyXMod(in, (char *)buffer, xmod);
+
+
/* Tags */
yaffs_InitialiseTags(&newTags);
in->serial++;
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)
-{
- yaffs_CheckpointValidity 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))?
- 1 : 0;
-}
-
-static int yaffs_ReadCheckpointValidityMarker(yaffs_Device *dev, int head)
-{
- yaffs_CheckpointValidity cp;
- int 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) &&
- (cp.head == ((head) ? 1 : 0));
- return ok ? 1 : 0;
-}
-
-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,
- yaffs_CheckpointDevice *cp)
-{
- dev->nErasedBlocks = cp->nErasedBlocks;
- dev->allocationBlock = cp->allocationBlock;
- dev->allocationPage = cp->allocationPage;
- dev->nFreeChunks = cp->nFreeChunks;
-
- dev->nDeletedFiles = cp->nDeletedFiles;
- dev->nUnlinkedFiles = cp->nUnlinkedFiles;
- dev->nBackgroundDeletions = cp->nBackgroundDeletions;
- dev->sequenceNumber = cp->sequenceNumber;
- dev->oldestDirtySequence = cp->oldestDirtySequence;
-}
-
-
-static int yaffs_WriteCheckpointDevice(yaffs_Device *dev)
-{
- yaffs_CheckpointDevice cp;
- __u32 nBytes;
- __u32 nBlocks = (dev->internalEndBlock - dev->internalStartBlock + 1);
-
- int ok;
-
- /* Write device runtime values*/
- yaffs_DeviceToCheckpointDevice(&cp,dev);
- cp.structType = sizeof(cp);
-
- ok = (yaffs_CheckpointWrite(dev,&cp,sizeof(cp)) == sizeof(cp));
-
- /* Write block info */
- if(ok) {
- nBytes = nBlocks * sizeof(yaffs_BlockInfo);
- ok = (yaffs_CheckpointWrite(dev,dev->blockInfo,nBytes) == nBytes);
- }
-
- /* Write chunk bits */
- if(ok) {
- nBytes = nBlocks * dev->chunkBitmapStride;
- ok = (yaffs_CheckpointWrite(dev,dev->chunkBits,nBytes) == nBytes);
- }
- return ok ? 1 : 0;
-
-}
-
-static int yaffs_ReadCheckpointDevice(yaffs_Device *dev)
-{
- yaffs_CheckpointDevice cp;
- __u32 nBytes;
- __u32 nBlocks = (dev->internalEndBlock - dev->internalStartBlock + 1);
-
- int ok;
-
- ok = (yaffs_CheckpointRead(dev,&cp,sizeof(cp)) == sizeof(cp));
- if(!ok)
- return 0;
-
- if(cp.structType != sizeof(cp))
- return 0;
-
-
- yaffs_CheckpointDeviceToDevice(dev,&cp);
-
- nBytes = nBlocks * sizeof(yaffs_BlockInfo);
-
- ok = (yaffs_CheckpointRead(dev,dev->blockInfo,nBytes) == nBytes);
-
- if(!ok)
- return 0;
- nBytes = nBlocks * dev->chunkBitmapStride;
-
- ok = (yaffs_CheckpointRead(dev,dev->chunkBits,nBytes) == nBytes);
-
- return ok ? 1 : 0;
-}
-
-static void yaffs_ObjectToCheckpointObject(yaffs_CheckpointObject *cp,
- yaffs_Object *obj)
-{
-
- cp->objectId = obj->objectId;
- cp->parentId = (obj->parent) ? obj->parent->objectId : 0;
- cp->chunkId = obj->chunkId;
- cp->variantType = obj->variantType;
- cp->deleted = obj->deleted;
- cp->softDeleted = obj->softDeleted;
- cp->unlinked = obj->unlinked;
- cp->fake = obj->fake;
- cp->renameAllowed = obj->renameAllowed;
- cp->unlinkAllowed = obj->unlinkAllowed;
- cp->serial = obj->serial;
- cp->nDataChunks = obj->nDataChunks;
-
- if(obj->variantType == YAFFS_OBJECT_TYPE_FILE)
- cp->fileSizeOrEquivalentObjectId = obj->variant.fileVariant.fileSize;
- else if(obj->variantType == YAFFS_OBJECT_TYPE_HARDLINK)
- cp->fileSizeOrEquivalentObjectId = obj->variant.hardLinkVariant.equivalentObjectId;
-}
-
-static void yaffs_CheckpointObjectToObject( yaffs_Object *obj,yaffs_CheckpointObject *cp)
-{
-
- yaffs_Object *parent;
-
- obj->objectId = cp->objectId;
-
- if(cp->parentId)
- parent = yaffs_FindOrCreateObjectByNumber(
- obj->myDev,
- cp->parentId,
- YAFFS_OBJECT_TYPE_DIRECTORY);
- else
- parent = NULL;
-
- if(parent)
- yaffs_AddObjectToDirectory(parent, obj);
-
- obj->chunkId = cp->chunkId;
- obj->variantType = cp->variantType;
- obj->deleted = cp->deleted;
- obj->softDeleted = cp->softDeleted;
- obj->unlinked = cp->unlinked;
- obj->fake = cp->fake;
- obj->renameAllowed = cp->renameAllowed;
- obj->unlinkAllowed = cp->unlinkAllowed;
- obj->serial = cp->serial;
- obj->nDataChunks = cp->nDataChunks;
-
- if(obj->variantType == YAFFS_OBJECT_TYPE_FILE)
- obj->variant.fileVariant.fileSize = cp->fileSizeOrEquivalentObjectId;
- else if(obj->variantType == YAFFS_OBJECT_TYPE_HARDLINK)
- obj->variant.hardLinkVariant.equivalentObjectId = cp->fileSizeOrEquivalentObjectId;
-
- if(obj->objectId >= YAFFS_NOBJECT_BUCKETS)
- obj->lazyLoaded = 1;
-}
-
-
-
-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;
-
- if (tn) {
- if (level > 0) {
-
- for (i = 0; i < YAFFS_NTNODES_INTERNAL && ok; i++){
- if (tn->internal[i]) {
- ok = yaffs_CheckpointTnodeWorker(in,
- tn->internal[i],
- level - 1,
- (chunkOffset<<YAFFS_TNODES_INTERNAL_BITS) + 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);
- }
- }
-
- return ok;
-
-}
-
-static int yaffs_WriteCheckpointTnodes(yaffs_Object *obj)
-{
- __u32 endMarker = ~0;
- int ok = 1;
-
- 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)) ==
- sizeof(endMarker));
- }
-
- return ok ? 1 : 0;
-}
-
-static int yaffs_ReadCheckpointTnodes(yaffs_Object *obj)
-{
- __u32 baseChunk;
- int ok = 1;
- 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)){
- /* 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);
- else
- ok = 0;
-
- if(tn && ok){
- ok = yaffs_AddOrFindLevel0Tnode(dev,
- fileStructPtr,
- baseChunk,
- tn) ? 1 : 0;
- }
-
- if(ok)
- ok = (yaffs_CheckpointRead(dev,&baseChunk,sizeof(baseChunk)) == sizeof(baseChunk));
-
- }
-
- return ok ? 1 : 0;
-}
-
-
-static int yaffs_WriteCheckpointObjects(yaffs_Device *dev)
-{
- yaffs_Object *obj;
- yaffs_CheckpointObject cp;
- int i;
- int ok = 1;
- struct list_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) {
- if (lh) {
- obj = list_entry(lh, yaffs_Object, hashLink);
- if (!obj->deferedFree) {
- 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){
- ok = yaffs_WriteCheckpointTnodes(obj);
- }
- }
- }
- }
- }
-
- /* 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));
-
- return ok ? 1 : 0;
-}
-
-static int yaffs_ReadCheckpointObjects(yaffs_Device *dev)
-{
- yaffs_Object *obj;
- yaffs_CheckpointObject cp;
- 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"); */
- ok = 0;
- }
-
- 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) {
- ok = yaffs_ReadCheckpointTnodes(obj);
- } else if(obj->variantType == YAFFS_OBJECT_TYPE_HARDLINK) {
- obj->hardLinks.next =
- (struct list_head *)
- hardList;
- hardList = obj;
- }
-
- }
}
}
-
- if(ok)
- yaffs_HardlinkFixup(dev,hardList);
-
- return ok ? 1 : 0;
-}
-
-static int yaffs_WriteCheckpointData(yaffs_Device *dev)
-{
-
- int ok;
-
- ok = yaffs_CheckpointOpen(dev,1);
-
- if(ok)
- ok = yaffs_WriteCheckpointValidityMarker(dev,1);
- if(ok)
- ok = yaffs_WriteCheckpointDevice(dev);
- if(ok)
- 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;
-
- 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)
- ok = yaffs_ReadCheckpointDevice(dev);
- if(ok)
- ok = yaffs_ReadCheckpointObjects(dev);
- if(ok)
- ok = yaffs_ReadCheckpointValidityMarker(dev,0);
-
-
-
- if(!yaffs_CheckpointClose(dev))
- ok = 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){
- dev->isCheckpointed = 0;
- yaffs_CheckpointInvalidateStream(dev);
- if(dev->superBlock && dev->markSuperBlockDirty)
- dev->markSuperBlockDirty(dev->superBlock);
- }
-}
-
-
-int yaffs_CheckpointSave(yaffs_Device *dev)
-{
- yaffs_ReportOddballBlocks(dev);
- T(YAFFS_TRACE_CHECKPOINT,(TSTR("save entry: isCheckpointed %d"TENDSTR),dev->isCheckpointed));
-
- if(!dev->isCheckpointed)
- yaffs_WriteCheckpointData(dev);
-
- T(YAFFS_TRACE_CHECKPOINT,(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));
-
- retval = yaffs_ReadCheckpointData(dev);
-
- T(YAFFS_TRACE_CHECKPOINT,(TSTR("restore exit: isCheckpointed %d"TENDSTR),dev->isCheckpointed));
-
- yaffs_ReportOddballBlocks(dev);
-
- return retval;
-}
/*--------------------- File read/write ------------------------
* Read and write have very similar structures.
* 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_DoWriteDataToFile(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++;
+ 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++; /* File pos to chunk in file offset */
/* OK now check for the curveball where the start and end are in
* the same chunk.
* 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 (chunkStart > in->variant.fileVariant.fileSize)
+ nBytesRead = 0; /* Past end of file */
+ else
+ nBytesRead = in->variant.fileVariant.fileSize - chunkStart;
- if (nBytesRead > dev->nDataBytesPerChunk) {
+ 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)) {
- cache = yaffs_GrabChunkCache(in->myDev);
+ && yaffs_CheckSpaceForAllocation(dev, 1)) {
+ cache = yaffs_GrabChunkCache(dev);
cache->object = in;
cache->chunkId = chunk;
cache->dirty = 0;
cache->locked = 0;
yaffs_ReadChunkDataFromObject(in, chunk,
- cache->
- data);
- }
- else if(cache &&
- !cache->dirty &&
- !yaffs_CheckSpaceForAllocation(in->myDev)){
+ cache->data);
+ } else if (cache &&
+ !cache->dirty &&
+ !yaffs_CheckSpaceForAllocation(dev, 1)) {
/* 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;
return nDone;
}
+int yaffs_WriteDataToFile(yaffs_Object *in, const __u8 *buffer, loff_t offset,
+ int nBytes, int writeThrough)
+{
+ yaffs2_HandleHole(in,offset);
+ return yaffs_DoWriteDataToFile(in,buffer,offset,nBytes,writeThrough);
+}
+
+
/* ---------------------- 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 oldFileSize = in->variant.fileVariant.fileSize;
- int newSizeOfPartialChunk;
+void yaffs_ResizeDown( yaffs_Object *obj, loff_t newSize)
+{
int newFullChunks;
-
- yaffs_Device *dev = in->myDev;
-
+ __u32 newSizeOfPartialChunk;
+ yaffs_Device *dev = obj->myDev;
+
yaffs_AddrToChunk(dev, newSize, &newFullChunks, &newSizeOfPartialChunk);
- yaffs_FlushFilesChunkCache(in);
- yaffs_InvalidateWholeChunkCache(in);
+ yaffs_PruneResizedChunks(obj, newSize);
- yaffs_CheckGarbageCollection(dev);
+ if (newSizeOfPartialChunk != 0) {
+ int lastChunk = 1 + newFullChunks;
+ __u8 *localBuffer = yaffs_GetTempBuffer(dev, __LINE__);
- if (in->variantType != YAFFS_OBJECT_TYPE_FILE) {
- return yaffs_GetFileSize(in);
- }
+ /* Got to read and rewrite the last chunk with its new size and zero pad */
+ yaffs_ReadChunkDataFromObject(obj, lastChunk, localBuffer);
+ memset(localBuffer + newSizeOfPartialChunk, 0,
+ dev->nDataBytesPerChunk - newSizeOfPartialChunk);
- if (newSize == oldFileSize) {
- return oldFileSize;
+ yaffs_WriteChunkDataToObject(obj, lastChunk, localBuffer,
+ newSizeOfPartialChunk, 1);
+
+ yaffs_ReleaseTempBuffer(dev, localBuffer, __LINE__);
}
- if (newSize < oldFileSize) {
+ obj->variant.fileVariant.fileSize = newSize;
- yaffs_PruneResizedChunks(in, newSize);
+ yaffs_PruneFileStructure(dev, &obj->variant.fileVariant);
+}
- 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 */
- yaffs_ReadChunkDataFromObject(in, lastChunk,
- localBuffer);
+int yaffs_ResizeFile(yaffs_Object *in, loff_t newSize)
+{
+ yaffs_Device *dev = in->myDev;
+ int oldFileSize = in->variant.fileVariant.fileSize;
- memset(localBuffer + newSizeOfPartialChunk, 0,
- dev->nDataBytesPerChunk - newSizeOfPartialChunk);
+ yaffs_FlushFilesChunkCache(in);
+ yaffs_InvalidateWholeChunkCache(in);
- yaffs_WriteChunkDataToObject(in, lastChunk, localBuffer,
- newSizeOfPartialChunk, 1);
+ yaffs_CheckGarbageCollection(dev,0);
- yaffs_ReleaseTempBuffer(dev, localBuffer, __LINE__);
- }
+ if (in->variantType != YAFFS_OBJECT_TYPE_FILE)
+ return YAFFS_FAIL;
+ if (newSize == oldFileSize)
+ return YAFFS_OK;
+
+ if(newSize > oldFileSize){
+ yaffs2_HandleHole(in,newSize);
in->variant.fileVariant.fileSize = newSize;
+ } else {
+ /* newSize < oldFileSize */
+ yaffs_ResizeDown(in, newSize);
+ }
- yaffs_PruneFileStructure(dev, &in->variant.fileVariant);
- }
- /* 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) {
- yaffs_UpdateObjectHeader(in, NULL, 0,
- (newSize < oldFileSize) ? 1 : 0, 0);
- }
+ if (in->parent &&
+ !in->isShadowed &&
+ in->parent->objectId != YAFFS_OBJECTID_UNLINKED &&
+ in->parent->objectId != YAFFS_OBJECTID_DELETED)
+ yaffs_UpdateObjectHeader(in, NULL, 0, 0, 0, NULL);
- 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, NULL) >=
+ 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;
* and the inode associated with the file.
* It does not delete the links associated with the file.
*/
-static int yaffs_UnlinkFile(yaffs_Object * in)
+static int yaffs_UnlinkFileIfNeeded(yaffs_Object *in)
{
int retVal;
int immediateDeletion = 0;
+ yaffs_Device *dev = in->myDev;
- if (1) {
-#ifdef __KERNEL__
- if (!in->myInode) {
- immediateDeletion = 1;
+ if (!in->myInode)
+ immediateDeletion = 1;
- }
-#else
- if (in->inUse <= 0) {
- 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 (dev->param.disableSoftDelete || dev->param.isYaffs2)
+ yaffs_ResizeFile(in, 0);
+ yaffs_SoftDeleteFile(in);
+ } else {
+ retVal =
+ yaffs_ChangeObjectName(in, in->myDev->unlinkedDir,
+ _Y("unlinked"), 0, 0);
+ }
- }
-#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);
- }
- }
return retVal;
}
-int yaffs_DeleteFile(yaffs_Object * in)
+int yaffs_DeleteFile(yaffs_Object *in)
{
int retVal = YAFFS_OK;
+ int deleted; /* Need to cache value on stack if in is freed */
+ yaffs_Device *dev = in->myDev;
+
+ if (dev->param.disableSoftDelete || dev->param.isYaffs2)
+ 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);
+
+ deleted = in->deleted;
+
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);
+ if(!ylist_empty(&obj->variant.directoryVariant.dirty)){
+ T(YAFFS_TRACE_BACKGROUND, (TSTR("Remove object %d from dirty directories" TENDSTR),obj->objectId));
+ ylist_del_init(&obj->variant.directoryVariant.dirty);
+ }
+ 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:
+ ylist_del_init(&obj->variant.directoryVariant.dirty);
return yaffs_DeleteDirectory(obj);
break;
case YAFFS_OBJECT_TYPE_SYMLINK:
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)
+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 */
}
-typedef struct {
- int seq;
- int block;
-} yaffs_BlockIndex;
-
-static void yaffs_HardlinkFixup(yaffs_Device *dev, yaffs_Object *hardList)
+void yaffs_HardlinkFixup(yaffs_Device *dev, yaffs_Object *hardList)
{
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;
-
-}
-
-static int yaffs_Scan(yaffs_Device * dev)
+static void yaffs_StripDeletedObjects(yaffs_Device *dev)
{
- yaffs_ExtendedTags tags;
- int blk;
- int blockIterator;
- int startIterator;
- int endIterator;
- int nBlocksToScan = 0;
- int result;
-
- int chunk;
- int c;
- int deleted;
- yaffs_BlockState state;
- yaffs_Object *hardList = NULL;
- yaffs_Object *hl;
- yaffs_BlockInfo *bi;
- int sequenceNumber;
- yaffs_ObjectHeader *oh;
- yaffs_Object *in;
- yaffs_Object *parent;
- int nBlocks = dev->internalEndBlock - dev->internalStartBlock + 1;
-
- __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));
-
- chunkData = yaffs_GetTempBuffer(dev, __LINE__);
-
- 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);
- yaffs_ClearChunkBits(dev, blk);
- bi->pagesInUse = 0;
- bi->softDeletions = 0;
-
- yaffs_QueryInitialBlockState(dev, blk, &state, &sequenceNumber);
-
- bi->blockState = state;
- bi->sequenceNumber = sequenceNumber;
-
- T(YAFFS_TRACE_SCAN_DEBUG,
- (TSTR("Block scanning block %d state %d seq %d" TENDSTR), blk,
- state, sequenceNumber));
-
- if (state == YAFFS_BLOCK_STATE_DEAD) {
- T(YAFFS_TRACE_BAD_BLOCKS,
- (TSTR("block %d is bad" TENDSTR), blk));
- } else if (state == YAFFS_BLOCK_STATE_EMPTY) {
- 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++;
+ /*
+ * Sort out state of unlinked and deleted objects after scanning.
+ */
+ struct ylist_head *i;
+ struct ylist_head *n;
+ yaffs_Object *l;
- 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));
+ if (dev->readOnly)
+ return;
- }
+ /* 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);
}
}
- /* 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;
- }
-
- /* For each block.... */
- for (blockIterator = startIterator; blockIterator <= endIterator;
- blockIterator++) {
-
- if (dev->isYaffs2) {
- /* get the block to scan in the correct order */
- blk = blockIndex[blockIterator].block;
- } else {
- blk = blockIterator;
+ ylist_for_each_safe(i, n,
+ &dev->deletedDir->variant.directoryVariant.children) {
+ if (i) {
+ l = ylist_entry(i, yaffs_Object, siblings);
+ yaffs_DeleteObject(l);
}
+ }
- 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 &&
- state == YAFFS_BLOCK_STATE_NEEDS_SCANNING; c++) {
- /* Read the tags and decide what to do */
- chunk = blk * dev->nChunksPerBlock + c;
-
- result = yaffs_ReadChunkWithTagsFromNAND(dev, chunk, NULL,
- &tags);
-
- /* Let's have a good look at this chunk... */
-
- if (!dev->isYaffs2 && tags.chunkDeleted) {
- /* YAFFS1 only...
- * A deleted chunk
- */
- deleted++;
- dev->nFreeChunks++;
- /*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 is the one being allocated from
- */
+}
- 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 */
- 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));
- }
- }
+/*
+ * 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);
+}
- dev->nFreeChunks += (dev->nChunksPerBlock - c);
- } else if (tags.chunkId > 0) {
- /* chunkId > 0 so it is a data chunk... */
- unsigned int endpos;
+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;
- yaffs_SetChunkBit(dev, blk, c);
- bi->pagesInUse++;
+ if (dev->readOnly)
+ return;
- in = yaffs_FindOrCreateObjectByNumber(dev,
- tags.
- objectId,
- YAFFS_OBJECT_TYPE_FILE);
- /* PutChunkIntoFile checks for a clash (two data chunks with
- * the same chunkId).
- */
- yaffs_PutChunkIntoFile(in, tags.chunkId, chunk,
- 1);
- endpos =
- (tags.chunkId - 1) * dev->nDataBytesPerChunk +
- tags.byteCount;
- if (in->variantType == YAFFS_OBJECT_TYPE_FILE
- && in->variant.fileVariant.scannedFileSize <
- endpos) {
- in->variant.fileVariant.
- scannedFileSize = endpos;
- if (!dev->useHeaderFileSize) {
- in->variant.fileVariant.
- fileSize =
- in->variant.fileVariant.
- scannedFileSize;
- }
+ /* 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;
}
- /* T((" %d %d data %d %d\n",blk,c,tags.objectId,tags.chunkId)); */
- } else {
- /* chunkId == 0, so it is an ObjectHeader.
- * Thus, we read in the object header and make the object
- */
- yaffs_SetChunkBit(dev, blk, c);
- bi->pagesInUse++;
-
- result = yaffs_ReadChunkWithTagsFromNAND(dev, chunk,
- chunkData,
- NULL);
-
- oh = (yaffs_ObjectHeader *) chunkData;
-
- in = yaffs_FindObjectByNumber(dev,
- 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
- * deleted, and worse still it has changed type. Delete the old object.
+ 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.
*/
-
- yaffs_DestroyObject(in);
-
- in = 0;
- }
-
- in = yaffs_FindOrCreateObjectByNumber(dev,
- tags.
- objectId,
- oh->type);
-
- if (oh->shadowsObject > 0) {
- yaffs_HandleShadowedObject(dev,
- oh->
- shadowsObject,
- 0);
- }
-
- if (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) {
- /* Use new one - destroy the exisiting one */
- yaffs_DeleteChunk(dev,
- in->chunkId,
- 1, __LINE__);
- in->valid = 0;
- } else {
- /* Use existing - destroy this one. */
- yaffs_DeleteChunk(dev, chunk, 1,
- __LINE__);
+ 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 (!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;
- in->variantType = oh->type;
-
- in->yst_mode = oh->yst_mode;
-#ifdef CONFIG_YAFFS_WINCE
- in->win_atime[0] = oh->win_atime[0];
- in->win_ctime[0] = oh->win_ctime[0];
- in->win_mtime[0] = oh->win_mtime[0];
- in->win_atime[1] = oh->win_atime[1];
- in->win_ctime[1] = oh->win_ctime[1];
- in->win_mtime[1] = oh->win_mtime[1];
-#else
- in->yst_uid = oh->yst_uid;
- in->yst_gid = oh->yst_gid;
- in->yst_atime = oh->yst_atime;
- in->yst_mtime = oh->yst_mtime;
- in->yst_ctime = oh->yst_ctime;
- in->yst_rdev = oh->yst_rdev;
-#endif
- in->chunkId = chunk;
-
- } else if (!in->valid) {
- /* we need to load this info */
-
- in->valid = 1;
- in->variantType = oh->type;
-
- in->yst_mode = oh->yst_mode;
-#ifdef CONFIG_YAFFS_WINCE
- in->win_atime[0] = oh->win_atime[0];
- in->win_ctime[0] = oh->win_ctime[0];
- in->win_mtime[0] = oh->win_mtime[0];
- in->win_atime[1] = oh->win_atime[1];
- in->win_ctime[1] = oh->win_ctime[1];
- in->win_mtime[1] = oh->win_mtime[1];
-#else
- in->yst_uid = oh->yst_uid;
- in->yst_gid = oh->yst_gid;
- in->yst_atime = oh->yst_atime;
- in->yst_mtime = oh->yst_mtime;
- in->yst_ctime = oh->yst_ctime;
- in->yst_rdev = oh->yst_rdev;
-#endif
- in->chunkId = chunk;
-
- yaffs_SetObjectName(in, oh->name);
- in->dirty = 0;
-
- /* directory stuff...
- * hook up to parent
- */
-
- parent =
- yaffs_FindOrCreateObjectByNumber
- (dev, oh->parentObjectId,
- YAFFS_OBJECT_TYPE_DIRECTORY);
- if (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)
- {
- /* 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."
- TENDSTR)));
- parent = dev->lostNFoundDir;
- }
-
- yaffs_AddObjectToDirectory(parent, in);
-
- if (0 && (parent == dev->deletedDir ||
- parent == dev->unlinkedDir)) {
- in->deleted = 1; /* If it is unlinked at start up then it wants deleting */
- dev->nDeletedFiles++;
- }
- /* Note re hardlinks.
- * 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.
- */
-
- switch (in->variantType) {
- 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)
-
- in->variant.fileVariant.
- fileSize =
- oh->fileSize;
-
- break;
- case YAFFS_OBJECT_TYPE_HARDLINK:
- in->variant.hardLinkVariant.
- equivalentObjectId =
- oh->equivalentObjectId;
- in->hardLinks.next =
- (struct list_head *)
- hardList;
- hardList = in;
- break;
- case YAFFS_OBJECT_TYPE_DIRECTORY:
- /* Do nothing */
- break;
- case YAFFS_OBJECT_TYPE_SPECIAL:
- /* Do nothing */
- break;
- case YAFFS_OBJECT_TYPE_SYMLINK:
- in->variant.symLinkVariant.
- alias =
- yaffs_CloneString(oh->alias);
- break;
- }
-
- if (parent == dev->deletedDir) {
- yaffs_DestroyObject(in);
- bi->hasShrinkHeader = 1;
- }
+ if(hanging){
+ T(YAFFS_TRACE_SCAN,
+ (TSTR("Hanging object %d moved to lost and found" TENDSTR),
+ obj->objectId));
+ yaffs_AddObjectToDirectory(dev->lostNFoundDir,obj);
}
}
}
-
- 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 */
- if (bi->pagesInUse == 0 &&
- !bi->hasShrinkHeader &&
- bi->blockState == YAFFS_BLOCK_STATE_FULL) {
- yaffs_BlockBecameDirty(dev, blk);
- }
-
}
+}
- 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
- * hardlinks.
- */
- yaffs_HardlinkFixup(dev,hardList);
+/*
+ * 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;
- /* Handle the unlinked files. Since they were left in an unlinked state we should
- * just delete them.
- */
- {
- 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);
- }
+ 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);
}
}
+
+}
- yaffs_ReleaseTempBuffer(dev, chunkData, __LINE__);
-
- T(YAFFS_TRACE_SCAN, (TSTR("yaffs_Scan ends" TENDSTR)));
-
- return YAFFS_OK;
+static void yaffs_EmptyLostAndFound(yaffs_Device *dev)
+{
+ yaffs_DeleteDirectoryContents(dev->lostNFoundDir);
}
static void yaffs_CheckObjectDetailsLoaded(yaffs_Object *in)
{
__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 =
- yaffs_CloneString(oh->alias);
-
- yaffs_ReleaseTempBuffer(dev,chunkData, __LINE__);
- }
-}
-
-static int yaffs_ScanBackwards(yaffs_Device * dev)
-{
- yaffs_ExtendedTags tags;
- int blk;
- int blockIterator;
- int startIterator;
- int endIterator;
- int nBlocksToScan = 0;
-
- int chunk;
- int result;
- int c;
- int deleted;
- yaffs_BlockState state;
- yaffs_Object *hardList = NULL;
- yaffs_BlockInfo *bi;
- int 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;
-
-
- yaffs_BlockIndex *blockIndex = NULL;
- int altBlockIndex = 0;
-
- if (!dev->isYaffs2) {
- T(YAFFS_TRACE_SCAN,
- (TSTR("yaffs_ScanBackwards is only for YAFFS2!" TENDSTR)));
- return YAFFS_FAIL;
- }
-
- T(YAFFS_TRACE_SCAN,
- (TSTR
- ("yaffs_ScanBackwards starts intstartblk %d intendblk %d..."
- TENDSTR), dev->internalStartBlock, dev->internalEndBlock));
-
-
- dev->sequenceNumber = YAFFS_LOWEST_SEQUENCE_NUMBER;
-
- blockIndex = YMALLOC(nBlocks * sizeof(yaffs_BlockIndex));
-
- if(!blockIndex) {
- blockIndex = YMALLOC_ALT(nBlocks * sizeof(yaffs_BlockIndex));
- altBlockIndex = 1;
- }
-
- if(!blockIndex) {
- T(YAFFS_TRACE_SCAN,
- (TSTR("yaffs_Scan() could not allocate block index!" TENDSTR)));
- return YAFFS_FAIL;
- }
-
- chunkData = yaffs_GetTempBuffer(dev, __LINE__);
-
- /* Scan all the blocks to determine their state */
- for (blk = dev->internalStartBlock; blk <= dev->internalEndBlock; blk++) {
- bi = yaffs_GetBlockInfo(dev, blk);
- yaffs_ClearChunkBits(dev, blk);
- bi->pagesInUse = 0;
- bi->softDeletions = 0;
-
- yaffs_QueryInitialBlockState(dev, blk, &state, &sequenceNumber);
-
- bi->blockState = state;
- bi->sequenceNumber = sequenceNumber;
-
- if(bi->sequenceNumber == YAFFS_SEQUENCE_CHECKPOINT_DATA)
- bi->blockState = state = YAFFS_BLOCK_STATE_CHECKPOINT;
-
- 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 ? */
-
- } else if (state == YAFFS_BLOCK_STATE_DEAD) {
- T(YAFFS_TRACE_BAD_BLOCKS,
- (TSTR("block %d is bad" TENDSTR), blk));
- } else if (state == YAFFS_BLOCK_STATE_EMPTY) {
- 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));
-
- }
- }
- }
-
- T(YAFFS_TRACE_SCAN,
- (TSTR("%d blocks to be sorted..." TENDSTR), nBlocksToScan));
-
-
-
- YYIELD();
-
- /* Sort the blocks */
-#ifndef CONFIG_YAFFS_USE_OWN_SORT
- {
- /* Use qsort now. */
- qsort(blockIndex, nBlocksToScan, sizeof(yaffs_BlockIndex), ybicmp);
- }
-#else
- {
- /* Dungy old bubble sort... */
-
- 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;
- }
- }
#endif
+ yaffs_SetObjectNameFromOH(in, oh);
- YYIELD();
-
- T(YAFFS_TRACE_SCAN, (TSTR("...done" TENDSTR)));
-
- /* Now scan the blocks looking at the data. */
- startIterator = 0;
- endIterator = nBlocksToScan - 1;
- T(YAFFS_TRACE_SCAN_DEBUG,
- (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
- long that watchdog timers expire. */
- 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 &&
- (state == YAFFS_BLOCK_STATE_NEEDS_SCANNING ||
- state == YAFFS_BLOCK_STATE_ALLOCATING); c--) {
- /* Scan backwards...
- * Read the tags and decide what to do
- */
- chunk = blk * dev->nChunksPerBlock + c;
-
- result = yaffs_ReadChunkWithTagsFromNAND(dev, chunk, NULL,
- &tags);
-
- /* Let's have a good look at this chunk... */
-
- if (!tags.chunkUsed) {
- /* An unassigned chunk in the block.
- * If there are used chunks after this one, then
- * 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
- * this is the one being allocated from
- */
-
- 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 {
- 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. This block must have
- * had a write failure, so set up for retirement.
- */
-
- bi->needsRetiring = 1;
- bi->gcPrioritise = 1;
-
- T(YAFFS_TRACE_ALWAYS,
- (TSTR("Partially written block %d being set for retirement" TENDSTR),
- blk));
- }
-
- }
-
- }
-
- 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;
-
-
- yaffs_SetChunkBit(dev, blk, c);
- bi->pagesInUse++;
-
- in = yaffs_FindOrCreateObjectByNumber(dev,
- tags.
- objectId,
- YAFFS_OBJECT_TYPE_FILE);
- if (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);
-
- /* 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;
-
- 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;
- }
-
- } else {
- /* This chunk has been invalidated by a resize, so delete */
- yaffs_DeleteChunk(dev, chunk, 1, __LINE__);
-
- }
- } else {
- /* chunkId == 0, so it is an ObjectHeader.
- * Thus, we read in the object header and make the object
- */
- foundChunksInBlock = 1;
-
- yaffs_SetChunkBit(dev, blk, c);
- bi->pagesInUse++;
-
- oh = NULL;
- in = NULL;
-
- if (tags.extraHeaderInfoAvailable) {
- in = yaffs_FindOrCreateObjectByNumber
- (dev, tags.objectId,
- tags.extraObjectType);
- }
-
- if (!in ||
-#ifdef CONFIG_YAFFS_DISABLE_LAZY_LOAD
- !in->valid ||
-#endif
- tags.extraShadows ||
- (!in->valid &&
- (tags.objectId == YAFFS_OBJECTID_ROOT ||
- 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
- * living with invalid data until needed.
- */
-
- result = yaffs_ReadChunkWithTagsFromNAND(dev,
- chunk,
- chunkData,
- NULL);
-
- oh = (yaffs_ObjectHeader *) chunkData;
-
- if (!in)
- in = yaffs_FindOrCreateObjectByNumber(dev, tags.objectId, oh->type);
-
- }
-
- if (!in) {
- /* 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"
- TENDSTR), tags.objectId, chunk));
-
- }
-
- if (in->valid) {
- /* We have already filled this one.
- * 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)||
- (tags.extraHeaderInfoAvailable &&
- tags.extraObjectType == YAFFS_OBJECT_TYPE_FILE))
- ) {
- __u32 thisSize =
- (oh) ? oh->fileSize : tags.
- extraFileLength;
- __u32 parentObjectId =
- (oh) ? oh->
- parentObjectId : tags.
- extraParentObjectId;
- unsigned isShrink =
- (oh) ? oh->isShrink : tags.
- extraIsShrinkHeader;
-
- /* If it is deleted (unlinked at start also means deleted)
- * we treat the file size as being zeroed at this point.
- */
- if (parentObjectId ==
- YAFFS_OBJECTID_DELETED
- || parentObjectId ==
- YAFFS_OBJECTID_UNLINKED) {
- thisSize = 0;
- isShrink = 1;
- }
-
- if (isShrink &&
- in->variant.fileVariant.
- shrinkSize > thisSize) {
- in->variant.fileVariant.
- shrinkSize =
- thisSize;
- }
-
- if (isShrink) {
- bi->hasShrinkHeader = 1;
- }
-
- }
- /* Use existing - destroy this one. */
- yaffs_DeleteChunk(dev, chunk, 1, __LINE__);
-
- }
-
- 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) {
- in->variantType = oh->type;
-
- in->yst_mode = oh->yst_mode;
-#ifdef CONFIG_YAFFS_WINCE
- in->win_atime[0] = oh->win_atime[0];
- in->win_ctime[0] = oh->win_ctime[0];
- in->win_mtime[0] = oh->win_mtime[0];
- in->win_atime[1] = oh->win_atime[1];
- in->win_ctime[1] = oh->win_ctime[1];
- in->win_mtime[1] = oh->win_mtime[1];
-#else
- in->yst_uid = oh->yst_uid;
- in->yst_gid = oh->yst_gid;
- in->yst_atime = oh->yst_atime;
- 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;
-
- } else if (!in->valid) {
- /* we need to load this info */
-
- in->valid = 1;
- in->chunkId = chunk;
-
- if(oh) {
- in->variantType = oh->type;
-
- in->yst_mode = oh->yst_mode;
-#ifdef CONFIG_YAFFS_WINCE
- in->win_atime[0] = oh->win_atime[0];
- in->win_ctime[0] = oh->win_ctime[0];
- in->win_mtime[0] = oh->win_mtime[0];
- in->win_atime[1] = oh->win_atime[1];
- in->win_ctime[1] = oh->win_ctime[1];
- in->win_mtime[1] = oh->win_mtime[1];
-#else
- in->yst_uid = oh->yst_uid;
- in->yst_gid = oh->yst_gid;
- in->yst_atime = oh->yst_atime;
- in->yst_mtime = oh->yst_mtime;
- in->yst_ctime = oh->yst_ctime;
- in->yst_rdev = oh->yst_rdev;
-#endif
-
- 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);
-
- fileSize = oh->fileSize;
- isShrink = oh->isShrink;
- equivalentObjectId = oh->equivalentObjectId;
-
- }
- else {
- in->variantType = tags.extraObjectType;
- parent =
- yaffs_FindOrCreateObjectByNumber
- (dev, tags.extraParentObjectId,
- YAFFS_OBJECT_TYPE_DIRECTORY);
- fileSize = tags.extraFileLength;
- isShrink = tags.extraIsShrinkHeader;
- equivalentObjectId = tags.extraEquivalentObjectId;
- in->lazyLoaded = 1;
-
- }
- in->dirty = 0;
-
- /* directory stuff...
- * hook up to parent
- */
-
- if (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)
- {
- /* 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."
- TENDSTR)));
- parent = dev->lostNFoundDir;
- }
-
- yaffs_AddObjectToDirectory(parent, in);
-
- itsUnlinked = (parent == dev->deletedDir) ||
- (parent == dev->unlinkedDir);
-
- if (isShrink) {
- /* Mark the block as having a shrinkHeader */
- bi->hasShrinkHeader = 1;
- }
-
- /* Note re hardlinks.
- * 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.
- */
-
- switch (in->variantType) {
- case YAFFS_OBJECT_TYPE_UNKNOWN:
- /* Todo got a problem */
- break;
- case YAFFS_OBJECT_TYPE_FILE:
-
- if (in->variant.fileVariant.
- 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
- * than its current data extents.
- */
- in->variant.fileVariant.fileSize = fileSize;
- in->variant.fileVariant.scannedFileSize =
- in->variant.fileVariant.fileSize;
- }
-
- if (isShrink &&
- 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;
- }
- break;
- case YAFFS_OBJECT_TYPE_DIRECTORY:
- /* Do nothing */
- break;
- case YAFFS_OBJECT_TYPE_SPECIAL:
- /* Do nothing */
- break;
- case YAFFS_OBJECT_TYPE_SYMLINK:
- if(oh)
- in->variant.symLinkVariant.alias =
- yaffs_CloneString(oh->
- alias);
- break;
- }
-
- }
- }
- }
-
- 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;
+ if (in->variantType == YAFFS_OBJECT_TYPE_SYMLINK) {
+ in->variant.symLinkVariant.alias =
+ yaffs_CloneString(oh->alias);
+ if (!in->variant.symLinkVariant.alias)
+ alloc_failed = 1; /* Not returned to caller */
}
- bi->blockState = state;
+ yaffs_ReleaseTempBuffer(dev, chunkData, __LINE__);
+ }
+}
- /* Now let's see if it was dirty */
- if (bi->pagesInUse == 0 &&
- !bi->hasShrinkHeader &&
- bi->blockState == YAFFS_BLOCK_STATE_FULL) {
- yaffs_BlockBecameDirty(dev, blk);
- }
+/*------------------------------ Directory Functions ----------------------------- */
- }
+/*
+ *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
+ *
+ * This can be handled immediately or defered. Defering helps reduce the number
+ * of updates when many files in a directory are changed within a brief period.
+ *
+ * If the directory updating is defered then yaffs_UpdateDirtyDirecories must be
+ * called periodically.
+ */
+
+static void yaffs_UpdateParent(yaffs_Object *obj)
+{
+ yaffs_Device *dev;
+ if(!obj)
+ return;
+#ifndef CONFIG_YAFFS_WINCE
- 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
- * hardlinks.
- */
- yaffs_HardlinkFixup(dev,hardList);
-
+ dev = obj->myDev;
+ obj->dirty = 1;
+ obj->yst_mtime = obj->yst_ctime = Y_CURRENT_TIME;
+ if(dev->param.deferDirectoryUpdate){
+ struct ylist_head *link = &obj->variant.directoryVariant.dirty;
- /*
- * 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);
- }
+ if(ylist_empty(link)){
+ ylist_add(link,&dev->dirtyDirectories);
+ T(YAFFS_TRACE_BACKGROUND, (TSTR("Added object %d to dirty directories" TENDSTR),obj->objectId));
}
- /* 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);
+ } else
+ yaffs_UpdateObjectHeader(obj, NULL, 0, 0, 0, NULL);
+#endif
+}
+
+void yaffs_UpdateDirtyDirectories(yaffs_Device *dev)
+{
+ struct ylist_head *link;
+ yaffs_Object *obj;
+ yaffs_DirectoryStructure *dS;
+ yaffs_ObjectVariant *oV;
- }
- }
- }
+ T(YAFFS_TRACE_BACKGROUND, (TSTR("Update dirty directories" TENDSTR)));
- yaffs_ReleaseTempBuffer(dev, chunkData, __LINE__);
+ while(!ylist_empty(&dev->dirtyDirectories)){
+ link = dev->dirtyDirectories.next;
+ ylist_del_init(link);
+
+ dS=ylist_entry(link,yaffs_DirectoryStructure,dirty);
+ oV = ylist_entry(dS,yaffs_ObjectVariant,directoryVariant);
+ obj = ylist_entry(oV,yaffs_Object,variant);
- T(YAFFS_TRACE_SCAN, (TSTR("yaffs_ScanBackwards ends" TENDSTR)));
+ T(YAFFS_TRACE_BACKGROUND, (TSTR("Update directory %d" TENDSTR), obj->objectId));
- return YAFFS_OK;
+ if(obj->dirty)
+ yaffs_UpdateObjectHeader(obj, NULL, 0, 0, 0, NULL);
+ }
}
-/*------------------------------ Directory Functions ----------------------------- */
-
-static void yaffs_RemoveObjectFromDirectory(yaffs_Object * obj)
+static void yaffs_RemoveObjectFromDirectory(yaffs_Object *obj)
{
yaffs_Device *dev = obj->myDev;
-
- if(dev && dev->removeObjectCallback)
- dev->removeObjectCallback(obj);
-
- list_del_init(&obj->siblings);
+ 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)
+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;
+}
+
+/*
+ * A note or two on object names.
+ * * If the object name is missing, we then make one up in the form objnnn
+ *
+ * * ASCII names are stored in the object header's name field from byte zero
+ * * Unicode names are historically stored starting from byte zero.
+ *
+ * Then there are automatic Unicode names...
+ * The purpose of these is to save names in a way that can be read as
+ * ASCII or Unicode names as appropriate, thus allowing a Unicode and ASCII
+ * system to share files.
+ *
+ * These automatic unicode are stored slightly differently...
+ * - If the name can fit in the ASCII character space then they are saved as
+ * ascii names as per above.
+ * - If the name needs Unicode then the name is saved in Unicode
+ * starting at oh->name[1].
+
+ */
+static void yaffs_FixNullName(yaffs_Object * obj,YCHAR * name, int buffSize)
+{
+ /* Create an object name if we could not find one. */
+ if(yaffs_strnlen(name,YAFFS_MAX_NAME_LENGTH) == 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_strcpy(locName, YAFFS_LOSTNFOUND_PREFIX);
+ yaffs_strcat(locName,x);
+ yaffs_strncpy(name, locName, buffSize - 1);
+ }
+}
+
+static void yaffs_LoadNameFromObjectHeader(yaffs_Device *dev,YCHAR *name, const YCHAR *ohName, int bufferSize)
+{
+#ifdef CONFIG_YAFFS_AUTO_UNICODE
+ if(dev->param.autoUnicode){
+ if(*ohName){
+ /* It is an ASCII name, so do an ASCII to unicode conversion */
+ const char *asciiOhName = (const char *)ohName;
+ int n = bufferSize - 1;
+ while(n > 0 && *asciiOhName){
+ *name = *asciiOhName;
+ name++;
+ asciiOhName++;
+ n--;
+ }
+ } else
+ yaffs_strncpy(name,ohName+1, bufferSize -1);
+ } else
+#endif
+ yaffs_strncpy(name, ohName, bufferSize - 1);
+}
+
+
+static void yaffs_LoadObjectHeaderFromName(yaffs_Device *dev, YCHAR *ohName, const YCHAR *name)
+{
+#ifdef CONFIG_YAFFS_AUTO_UNICODE
+
+ int isAscii;
+ YCHAR *w;
+
+ if(dev->param.autoUnicode){
+
+ isAscii = 1;
+ w = name;
+
+ /* Figure out if the name will fit in ascii character set */
+ while(isAscii && *w){
+ if((*w) & 0xff00)
+ isAscii = 0;
+ w++;
+ }
+
+ if(isAscii){
+ /* It is an ASCII name, so do a unicode to ascii conversion */
+ char *asciiOhName = (char *)ohName;
+ int n = YAFFS_MAX_NAME_LENGTH - 1;
+ while(n > 0 && *name){
+ *asciiOhName= *name;
+ name++;
+ asciiOhName++;
+ n--;
+ }
+ } else{
+ /* It is a unicode name, so save starting at the second YCHAR */
+ *ohName = 0;
+ yaffs_strncpy(ohName+1,name, YAFFS_MAX_NAME_LENGTH -2);
+ }
+ }
+ else
+#endif
+ yaffs_strncpy(ohName,name, YAFFS_MAX_NAME_LENGTH - 1);
}
if (obj->objectId == YAFFS_OBJECTID_LOSTNFOUND) {
yaffs_strncpy(name, YAFFS_LOSTNFOUND_NAME, buffSize - 1);
- } else if (obj->chunkId <= 0) {
- YCHAR locName[20];
- /* make up a name */
- yaffs_sprintf(locName, _Y("%s%d"), YAFFS_LOSTNFOUND_PREFIX,
- obj->objectId);
- yaffs_strncpy(name, locName, buffSize - 1);
-
- }
+ }
#ifdef CONFIG_YAFFS_SHORT_NAMES_IN_RAM
else if (obj->shortName[0]) {
yaffs_strcpy(name, obj->shortName);
}
#endif
- else {
+ else if(obj->hdrChunk > 0) {
int result;
__u8 *buffer = yaffs_GetTempBuffer(obj->myDev, __LINE__);
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);
+ yaffs_LoadNameFromObjectHeader(obj->myDev,name,oh->name,buffSize);
yaffs_ReleaseTempBuffer(obj->myDev, buffer, __LINE__);
}
- return yaffs_strlen(name);
+ yaffs_FixNullName(obj,name,buffSize);
+
+ return yaffs_strnlen(name,YAFFS_MAX_NAME_LENGTH);
}
-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;
if (valid & ATTR_SIZE)
yaffs_ResizeFile(obj, attr->ia_size);
- yaffs_UpdateObjectHeader(obj, NULL, 1, 0, 0);
+ yaffs_UpdateObjectHeader(obj, NULL, 1, 0, 0, NULL);
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
+
+static int yaffs_DoXMod(yaffs_Object *obj, int set, const YCHAR *name, const void *value, int size, int flags)
+{
+ yaffs_XAttrMod xmod;
+
+ int result;
+
+ xmod.set = set;
+ xmod.name = name;
+ xmod.data = value;
+ xmod.size = size;
+ xmod.flags = flags;
+ xmod.result = -ENOSPC;
+
+ result = yaffs_UpdateObjectHeader(obj, NULL, 0, 0, 0, &xmod);
+
+ if(result > 0)
+ return xmod.result;
+ else
+ return -ENOSPC;
+}
+
+static int yaffs_ApplyXMod(yaffs_Object *obj, char *buffer, yaffs_XAttrMod *xmod)
+{
+ int retval = 0;
+ int x_offs = sizeof(yaffs_ObjectHeader);
+ yaffs_Device *dev = obj->myDev;
+ int x_size = dev->nDataBytesPerChunk - sizeof(yaffs_ObjectHeader);
+
+ char * x_buffer = buffer + x_offs;
+
+ if(xmod->set)
+ retval = nval_set(x_buffer, x_size, xmod->name, xmod->data, xmod->size, xmod->flags);
+ else
+ retval = nval_del(x_buffer, x_size, xmod->name);
+
+ obj->hasXattr = nval_hasvalues(x_buffer, x_size);
+ obj->xattrKnown = 1;
+
+ xmod->result = retval;
+
+ return retval;
+}
+
+static int yaffs_DoXFetch(yaffs_Object *obj, const YCHAR *name, void *value, int size)
+{
+ char *buffer = NULL;
+ int result;
+ yaffs_ExtendedTags tags;
+ yaffs_Device *dev = obj->myDev;
+ int x_offs = sizeof(yaffs_ObjectHeader);
+ int x_size = dev->nDataBytesPerChunk - sizeof(yaffs_ObjectHeader);
+
+ char * x_buffer;
+
+ int retval = 0;
+
+ if(obj->hdrChunk < 1)
+ return -ENODATA;
+
+ /* If we know that the object has no xattribs then don't do all the
+ * reading and parsing.
+ */
+ if(obj->xattrKnown && !obj->hasXattr){
+ if(name)
+ return -ENODATA;
+ else
+ return 0;
+ }
+
+ buffer = (char *) yaffs_GetTempBuffer(dev, __LINE__);
+ if(!buffer)
+ return -ENOMEM;
+
+ result = yaffs_ReadChunkWithTagsFromNAND(dev,obj->hdrChunk, (__u8 *)buffer, &tags);
+
+ if(result != YAFFS_OK)
+ retval = -ENOENT;
+ else{
+ x_buffer = buffer + x_offs;
+
+ if (!obj->xattrKnown){
+ obj->hasXattr = nval_hasvalues(x_buffer, x_size);
+ obj->xattrKnown = 1;
+ }
+
+ if(name)
+ retval = nval_get(x_buffer, x_size, name, value, size);
+ else
+ retval = nval_list(x_buffer, x_size, value,size);
+ }
+ yaffs_ReleaseTempBuffer(dev,(__u8 *)buffer,__LINE__);
+ return retval;
+}
+
+int yaffs_SetXAttribute(yaffs_Object *obj, const YCHAR *name, const void * value, int size, int flags)
+{
+ return yaffs_DoXMod(obj, 1, name, value, size, flags);
+}
+
+int yaffs_RemoveXAttribute(yaffs_Object *obj, const YCHAR *name)
+{
+ return yaffs_DoXMod(obj, 0, name, NULL, 0, 0);
+}
+
+int yaffs_GetXAttribute(yaffs_Object *obj, const YCHAR *name, void *value, int size)
+{
+ return yaffs_DoXFetch(obj, name, value, size);
+}
+
+int yaffs_ListXAttributes(yaffs_Object *obj, char *buffer, int size)
+{
+ return yaffs_DoXFetch(obj, NULL, buffer,size);
+}
+
+
+
#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 = 0;
+
+ 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->tnodeSize = (dev->tnodeWidth * YAFFS_NTNODES_LEVEL0)/8;
+ if(dev->tnodeSize < sizeof(yaffs_Tnode))
+ dev->tnodeSize = sizeof(yaffs_Tnode);
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".
/* OK, we've finished verifying the device, lets continue with initialisation */
/* More device initialisation */
- dev->garbageCollections = 0;
- dev->passiveGarbageCollections = 0;
- dev->currentDirtyChecker = 0;
+ dev->allGCs = 0;
+ dev->passiveGCs = 0;
+ dev->oldestDirtyGCs = 0;
+ dev->backgroundGCs = 0;
+ dev->gcBlockFinder = 0;
dev->bufferedBlock = -1;
dev->doingBufferedBlockRewrite = 0;
dev->nDeletedFiles = 0;
dev->tagsEccUnfixed = 0;
dev->nErasureFailures = 0;
dev->nErasedBlocks = 0;
- dev->isDoingGC = 0;
+ dev->gcDisable= 0;
dev->hasPendingPrioritisedGCs = 1; /* Assume the worst for now, will get fixed on first GC */
+ YINIT_LIST_HEAD(&dev->dirtyDirectories);
+ dev->oldestDirtySequence = 0;
+ dev->oldestDirtyBlock = 0;
/* 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);
- yaffs_InitialiseTnodes(dev);
- yaffs_InitialiseObjects(dev);
+ if (dev->param.isYaffs2)
+ dev->param.useHeaderFileSize = 1;
- yaffs_CreateInitialDirectories(dev);
+ if (!init_failed && !yaffs_InitialiseBlocks(dev))
+ init_failed = 1;
+ yaffs_InitialiseTnodesAndObjects(dev);
- /* 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 && !yaffs_CreateInitialDirectories(dev))
+ init_failed = 1;
- /* 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);
+
+ if (!init_failed) {
+ /* Now scan the flash. */
+ if (dev->param.isYaffs2) {
+ if (yaffs2_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_DeinitialiseTnodesAndObjects(dev);
+
+ dev->nErasedBlocks = 0;
+ dev->nFreeChunks = 0;
+ dev->allocationBlock = -1;
+ dev->allocationPage = -1;
+ dev->nDeletedFiles = 0;
+ dev->nUnlinkedFiles = 0;
+ dev->nBackgroundDeletions = 0;
+
+ if (!init_failed && !yaffs_InitialiseBlocks(dev))
+ init_failed = 1;
+
+ yaffs_InitialiseTnodesAndObjects(dev);
+
+ if (!init_failed && !yaffs_CreateInitialDirectories(dev))
+ init_failed = 1;
+
+ if (!init_failed && !yaffs2_ScanBackwards(dev))
+ init_failed = 1;
+ }
+ } else if (!yaffs1_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)
+ yaffs2_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) {
-
- for (i = 0; i < dev->nShortOpCaches; i++) {
- YFREE(dev->srCache[i].data);
+ yaffs_DeinitialiseTnodesAndObjects(dev);
+ if (dev->param.nShortOpCaches > 0 &&
+ dev->srCache) {
+
+ 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)
+int yaffs_CountFreeChunks(yaffs_Device *dev)
{
- int nFree;
+ int nFree=0;
int b;
yaffs_BlockInfo *blk;
- for (nFree = 0, b = dev->internalStartBlock; b <= dev->internalEndBlock;
- b++) {
- blk = yaffs_GetBlockInfo(dev, b);
-
+ blk = dev->blockInfo;
+ for (b = dev->internalStartBlock; b <= dev->internalEndBlock; b++) {
switch (blk->blockState) {
case YAFFS_BLOCK_STATE_EMPTY:
case YAFFS_BLOCK_STATE_ALLOCATING:
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;
}
-
+ blk++;
}
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 = 0;
-
- nFree -= (blocksForCheckpoint * dev->nChunksPerBlock);
+ blocksForCheckpoint = yaffs2_CalcCheckpointBlocksRequired(dev);
+
+ nFree -= (blocksForCheckpoint * dev->param.nChunksPerBlock);
if (nFree < 0)
nFree = 0;
}
-static int yaffs_freeVerificationFailures;
-
-static void yaffs_VerifyFreeChunks(yaffs_Device * dev)
-{
- int counted = yaffs_CountFreeChunks(dev);
-
- int difference = dev->nFreeChunks - counted;
-
- if (difference) {
- T(YAFFS_TRACE_ALWAYS,
- (TSTR("Freechunks verification failure %d %d %d" TENDSTR),
- dev->nFreeChunks, counted, difference));
- yaffs_freeVerificationFailures++;
- }
-}
/*---------------------------------------- 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") */
-#ifndef CONFIG_YAFFS_TNODE_LIST_DEBUG
- yaffs_CheckStruct(yaffs_Tnode, 2 * YAFFS_NTNODES_LEVEL0, "yaffs_Tnode")
-#endif
- yaffs_CheckStruct(yaffs_ObjectHeader, 512, "yaffs_ObjectHeader")
+/* yaffs_CheckStruct(yaffs_Tags,8,"yaffs_Tags"); */
+/* yaffs_CheckStruct(yaffs_TagsUnion,8,"yaffs_TagsUnion"); */
+/* yaffs_CheckStruct(yaffs_Spare,16,"yaffs_Spare"); */
+/* yaffs_CheckStruct(yaffs_Tnode, 2 * YAFFS_NTNODES_LEVEL0, "yaffs_Tnode"); */
- return YAFFS_OK;
+#ifndef CONFIG_YAFFS_WINCE
+ yaffs_CheckStruct(yaffs_ObjectHeader, 512, "yaffs_ObjectHeader");
+#endif
+ return YAFFS_OK;
}