diff options
Diffstat (limited to 'target/linux/generic/files/fs/yaffs2/yaffs_guts.c')
| -rw-r--r-- | target/linux/generic/files/fs/yaffs2/yaffs_guts.c | 6748 |
1 files changed, 2370 insertions, 4378 deletions
diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_guts.c b/target/linux/generic/files/fs/yaffs2/yaffs_guts.c index d89b87af4..36e11f53c 100644 --- a/target/linux/generic/files/fs/yaffs2/yaffs_guts.c +++ b/target/linux/generic/files/fs/yaffs2/yaffs_guts.c @@ -1,7 +1,7 @@ /* * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. * - * Copyright (C) 2002-2007 Aleph One Ltd. + * Copyright (C) 2002-2010 Aleph One Ltd. * for Toby Churchill Ltd and Brightstar Engineering * * Created by Charles Manning <charles@aleph1.co.uk> @@ -10,11 +10,8 @@ * 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 1.82 2009-03-09 04:24:17 charles Exp $"; - #include "yportenv.h" +#include "yaffs_trace.h" #include "yaffsinterface.h" #include "yaffs_guts.h" @@ -22,118 +19,109 @@ const char *yaffs_guts_c_version = #include "yaffs_getblockinfo.h" #include "yaffs_tagscompat.h" -#ifndef CONFIG_YAFFS_USE_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" -#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, +static void yaffs_retire_block(yaffs_dev_t *dev, int flash_block); +static void yaffs_handle_chunk_wr_error(yaffs_dev_t *dev, int nand_chunk, int erasedOk); -static void yaffs_HandleWriteChunkOk(yaffs_Device *dev, int chunkInNAND, +static void yaffs_handle_chunk_wr_ok(yaffs_dev_t *dev, int nand_chunk, const __u8 *data, - const yaffs_ExtendedTags *tags); -static void yaffs_HandleUpdateChunk(yaffs_Device *dev, int chunkInNAND, - const yaffs_ExtendedTags *tags); + const yaffs_ext_tags *tags); +static void yaffs_handle_chunk_update(yaffs_dev_t *dev, int nand_chunk, + const yaffs_ext_tags *tags); /* Other local prototypes */ -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 void yaffs_update_parent(yaffs_obj_t *obj); +static int yaffs_unlink_obj(yaffs_obj_t *obj); +static int yaffs_obj_cache_dirty(yaffs_obj_t *obj); -static int yaffs_WriteNewChunkWithTagsToNAND(yaffs_Device *dev, +static int yaffs_write_new_chunk(yaffs_dev_t *dev, const __u8 *buffer, - yaffs_ExtendedTags *tags, + yaffs_ext_tags *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 yaffs_BlockInfo *yaffs_GetBlockInfo(yaffs_Device *dev, int blockNo); +static yaffs_obj_t *yaffs_new_obj(yaffs_dev_t *dev, int number, + yaffs_obj_type type); -static int yaffs_CheckChunkErased(struct yaffs_DeviceStruct *dev, - int chunkInNAND); +static int yaffs_apply_xattrib_mod(yaffs_obj_t *obj, char *buffer, yaffs_xattr_mod *xmod); -static int yaffs_UnlinkWorker(yaffs_Object *obj); +static void yaffs_remove_obj_from_dir(yaffs_obj_t *obj); +static int yaffs_check_structures(void); +static int yaffs_generic_obj_del(yaffs_obj_t *in); -static int yaffs_TagsMatch(const yaffs_ExtendedTags *tags, int objectId, - int chunkInObject); +static int yaffs_check_chunk_erased(struct yaffs_dev_s *dev, + int nand_chunk); -static int yaffs_AllocateChunk(yaffs_Device *dev, int useReserve, - yaffs_BlockInfo **blockUsedPtr); +static int yaffs_unlink_worker(yaffs_obj_t *obj); -static void yaffs_VerifyFreeChunks(yaffs_Device *dev); +static int yaffs_tags_match(const yaffs_ext_tags *tags, int obj_id, + int chunkInObject); -static void yaffs_CheckObjectDetailsLoaded(yaffs_Object *in); +static int yaffs_alloc_chunk(yaffs_dev_t *dev, int useReserve, + yaffs_block_info_t **blockUsedPtr); -static void yaffs_VerifyDirectory(yaffs_Object *directory); -#ifdef YAFFS_PARANOID -static int yaffs_CheckFileSanity(yaffs_Object *in); -#else -#define yaffs_CheckFileSanity(in) -#endif +static void yaffs_check_obj_details_loaded(yaffs_obj_t *in); + +static void yaffs_invalidate_whole_cache(yaffs_obj_t *in); +static void yaffs_invalidate_chunk_cache(yaffs_obj_t *object, int chunk_id); -static void yaffs_InvalidateWholeChunkCache(yaffs_Object *in); -static void yaffs_InvalidateChunkCache(yaffs_Object *object, int chunkId); +static int yaffs_find_chunk_in_file(yaffs_obj_t *in, int inode_chunk, + yaffs_ext_tags *tags); -static void yaffs_InvalidateCheckpoint(yaffs_Device *dev); +static int yaffs_verify_chunk_written(yaffs_dev_t *dev, + int nand_chunk, + const __u8 *data, + yaffs_ext_tags *tags); -static int yaffs_FindChunkInFile(yaffs_Object *in, int chunkInInode, - yaffs_ExtendedTags *tags); -static __u32 yaffs_GetChunkGroupBase(yaffs_Device *dev, yaffs_Tnode *tn, - unsigned pos); -static yaffs_Tnode *yaffs_FindLevel0Tnode(yaffs_Device *dev, - yaffs_FileStructure *fStruct, - __u32 chunkId); +static void yaffs_load_name_from_oh(yaffs_dev_t *dev,YCHAR *name, const YCHAR *ohName, int bufferSize); +static void yaffs_load_oh_from_name(yaffs_dev_t *dev,YCHAR *ohName, const YCHAR *name); /* Function to calculate chunk and offset */ -static void yaffs_AddrToChunk(yaffs_Device *dev, loff_t addr, int *chunkOut, +static void yaffs_addr_to_chunk(yaffs_dev_t *dev, loff_t addr, int *chunkOut, __u32 *offsetOut) { int chunk; __u32 offset; - chunk = (__u32)(addr >> dev->chunkShift); + chunk = (__u32)(addr >> dev->chunk_shift); - if (dev->chunkDiv == 1) { + if (dev->chunk_div == 1) { /* easy power of 2 case */ - offset = (__u32)(addr & dev->chunkMask); + offset = (__u32)(addr & dev->chunk_mask); } else { /* Non power-of-2 case */ loff_t chunkBase; - chunk /= dev->chunkDiv; + chunk /= dev->chunk_div; - chunkBase = ((loff_t)chunk) * dev->nDataBytesPerChunk; + chunkBase = ((loff_t)chunk) * dev->data_bytes_per_chunk; offset = (__u32)(addr - chunkBase); } @@ -172,7 +160,7 @@ static __u32 ShiftsGE(__u32 x) static __u32 Shifts(__u32 x) { - int nShifts; + __u32 nShifts; nShifts = 0; @@ -193,49 +181,49 @@ static __u32 Shifts(__u32 x) * Temporary buffer manipulations. */ -static int yaffs_InitialiseTempBuffers(yaffs_Device *dev) +static int yaffs_init_tmp_buffers(yaffs_dev_t *dev) { int i; __u8 *buf = (__u8 *)1; - memset(dev->tempBuffer, 0, sizeof(dev->tempBuffer)); + memset(dev->temp_buffer, 0, sizeof(dev->temp_buffer)); 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->totalBytesPerChunk); + dev->temp_buffer[i].line = 0; /* not in use */ + dev->temp_buffer[i].buffer = buf = + YMALLOC_DMA(dev->param.total_bytes_per_chunk); } return buf ? YAFFS_OK : YAFFS_FAIL; } -__u8 *yaffs_GetTempBuffer(yaffs_Device *dev, int lineNo) +__u8 *yaffs_get_temp_buffer(yaffs_dev_t *dev, int line_no) { int i, j; - dev->tempInUse++; - if (dev->tempInUse > dev->maxTemp) - dev->maxTemp = dev->tempInUse; + dev->temp_in_use++; + if (dev->temp_in_use > dev->max_temp) + dev->max_temp = dev->temp_in_use; for (i = 0; i < YAFFS_N_TEMP_BUFFERS; i++) { - if (dev->tempBuffer[i].line == 0) { - dev->tempBuffer[i].line = lineNo; - if ((i + 1) > dev->maxTemp) { - dev->maxTemp = i + 1; + if (dev->temp_buffer[i].line == 0) { + dev->temp_buffer[i].line = line_no; + if ((i + 1) > dev->max_temp) { + dev->max_temp = i + 1; for (j = 0; j <= i; j++) - dev->tempBuffer[j].maxLine = - dev->tempBuffer[j].line; + dev->temp_buffer[j].max_line = + dev->temp_buffer[j].line; } - return dev->tempBuffer[i].buffer; + return dev->temp_buffer[i].buffer; } } T(YAFFS_TRACE_BUFFERS, (TSTR("Out of temp buffers at line %d, other held by lines:"), - lineNo)); + line_no)); for (i = 0; i < YAFFS_N_TEMP_BUFFERS; i++) - T(YAFFS_TRACE_BUFFERS, (TSTR(" %d "), dev->tempBuffer[i].line)); + T(YAFFS_TRACE_BUFFERS, (TSTR(" %d "), dev->temp_buffer[i].line)); T(YAFFS_TRACE_BUFFERS, (TSTR(" " TENDSTR))); @@ -244,21 +232,21 @@ __u8 *yaffs_GetTempBuffer(yaffs_Device *dev, int lineNo) * This is not good. */ - dev->unmanagedTempAllocations++; - return YMALLOC(dev->nDataBytesPerChunk); + dev->unmanaged_buffer_allocs++; + return YMALLOC(dev->data_bytes_per_chunk); } -void yaffs_ReleaseTempBuffer(yaffs_Device *dev, __u8 *buffer, - int lineNo) +void yaffs_release_temp_buffer(yaffs_dev_t *dev, __u8 *buffer, + int line_no) { int i; - dev->tempInUse--; + dev->temp_in_use--; for (i = 0; i < YAFFS_N_TEMP_BUFFERS; i++) { - if (dev->tempBuffer[i].buffer == buffer) { - dev->tempBuffer[i].line = 0; + if (dev->temp_buffer[i].buffer == buffer) { + dev->temp_buffer[i].line = 0; return; } } @@ -267,9 +255,9 @@ void yaffs_ReleaseTempBuffer(yaffs_Device *dev, __u8 *buffer, /* assume it is an unmanaged one. */ T(YAFFS_TRACE_BUFFERS, (TSTR("Releasing unmanaged temp buffer in line %d" TENDSTR), - lineNo)); + line_no)); YFREE(buffer); - dev->unmanagedTempDeallocations++; + dev->unmanaged_buffer_deallocs++; } } @@ -277,21 +265,21 @@ void yaffs_ReleaseTempBuffer(yaffs_Device *dev, __u8 *buffer, /* * Determine if we have a managed buffer. */ -int yaffs_IsManagedTempBuffer(yaffs_Device *dev, const __u8 *buffer) +int yaffs_is_managed_tmp_buffer(yaffs_dev_t *dev, const __u8 *buffer) { int i; for (i = 0; i < YAFFS_N_TEMP_BUFFERS; i++) { - if (dev->tempBuffer[i].buffer == buffer) + if (dev->temp_buffer[i].buffer == buffer) return 1; } - for (i = 0; i < dev->nShortOpCaches; i++) { - if (dev->srCache[i].data == buffer) + for (i = 0; i < dev->param.n_caches; i++) { + if (dev->cache[i].data == buffer) return 1; } - if (buffer == dev->checkpointBuffer) + if (buffer == dev->checkpt_buffer) return 1; T(YAFFS_TRACE_ALWAYS, @@ -299,564 +287,18 @@ int yaffs_IsManagedTempBuffer(yaffs_Device *dev, const __u8 *buffer) return 0; } - - -/* - * Chunk bitmap manipulations - */ - -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_VerifyChunkBitId(yaffs_Device *dev, int blk, int chunk) -{ - if (blk < dev->internalStartBlock || blk > dev->internalEndBlock || - chunk < 0 || chunk >= dev->nChunksPerBlock) { - T(YAFFS_TRACE_ERROR, - (TSTR("**>> yaffs: Chunk Id (%d:%d) invalid"TENDSTR), - blk, chunk)); - YBUG(); - } -} - -static Y_INLINE void yaffs_ClearChunkBits(yaffs_Device *dev, int blk) -{ - __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); - - yaffs_VerifyChunkBitId(dev, blk, chunk); - - 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); - - yaffs_VerifyChunkBitId(dev, blk, chunk); - - 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); - yaffs_VerifyChunkBitId(dev, blk, chunk); - - return (blkBits[chunk / 8] & (1 << (chunk & 7))) ? 1 : 0; -} - -static Y_INLINE int yaffs_StillSomeChunkBits(yaffs_Device *dev, int blk) -{ - __u8 *blkBits = yaffs_BlockBits(dev, blk); - int i; - for (i = 0; i < dev->chunkBitmapStride; i++) { - if (*blkBits) - return 1; - blkBits++; - } - return 0; -} - -static int yaffs_CountChunkBits(yaffs_Device *dev, int blk) -{ - __u8 *blkBits = yaffs_BlockBits(dev, blk); - int i; - int n = 0; - for (i = 0; i < dev->chunkBitmapStride; i++) { - __u8 x = *blkBits; - while (x) { - if (x & 1) - n++; - x >>= 1; - } - - blkBits++; - } - return n; -} - /* * Verification code */ -static int yaffs_SkipVerification(yaffs_Device *dev) -{ - return !(yaffs_traceMask & (YAFFS_TRACE_VERIFY | YAFFS_TRACE_VERIFY_FULL)); -} - -static int yaffs_SkipFullVerification(yaffs_Device *dev) -{ - return !(yaffs_traceMask & (YAFFS_TRACE_VERIFY_FULL)); -} - -static int yaffs_SkipNANDVerification(yaffs_Device *dev) -{ - return !(yaffs_traceMask & (YAFFS_TRACE_VERIFY_NAND)); -} - -static const char *blockStateName[] = { -"Unknown", -"Needs scanning", -"Scanning", -"Empty", -"Allocating", -"Full", -"Dirty", -"Checkpoint", -"Collecting", -"Dead" -}; - -static void yaffs_VerifyBlock(yaffs_Device *dev, yaffs_BlockInfo *bi, int n) -{ - int actuallyUsed; - int inUse; - - if (yaffs_SkipVerification(dev)) - return; - - /* Report illegal runtime states */ - if (bi->blockState >= YAFFS_NUMBER_OF_BLOCK_STATES) - T(YAFFS_TRACE_VERIFY, (TSTR("Block %d has undefined state %d"TENDSTR), n, bi->blockState)); - - switch (bi->blockState) { - case YAFFS_BLOCK_STATE_UNKNOWN: - case YAFFS_BLOCK_STATE_SCANNING: - case YAFFS_BLOCK_STATE_NEEDS_SCANNING: - T(YAFFS_TRACE_VERIFY, (TSTR("Block %d has bad run-state %s"TENDSTR), - n, blockStateName[bi->blockState])); - } - - /* Check pages in use and soft deletions are legal */ - - actuallyUsed = bi->pagesInUse - bi->softDeletions; - - if (bi->pagesInUse < 0 || bi->pagesInUse > dev->nChunksPerBlock || - bi->softDeletions < 0 || bi->softDeletions > dev->nChunksPerBlock || - actuallyUsed < 0 || actuallyUsed > dev->nChunksPerBlock) - T(YAFFS_TRACE_VERIFY, (TSTR("Block %d has illegal values pagesInUsed %d softDeletions %d"TENDSTR), - n, bi->pagesInUse, bi->softDeletions)); - - - /* Check chunk bitmap legal */ - inUse = yaffs_CountChunkBits(dev, n); - if (inUse != bi->pagesInUse) - T(YAFFS_TRACE_VERIFY, (TSTR("Block %d has inconsistent values pagesInUse %d counted chunk bits %d"TENDSTR), - n, bi->pagesInUse, inUse)); - - /* Check that the sequence number is valid. - * Ten million is legal, but is very unlikely - */ - if (dev->isYaffs2 && - (bi->blockState == YAFFS_BLOCK_STATE_ALLOCATING || bi->blockState == YAFFS_BLOCK_STATE_FULL) && - (bi->sequenceNumber < YAFFS_LOWEST_SEQUENCE_NUMBER || bi->sequenceNumber > 10000000)) - T(YAFFS_TRACE_VERIFY, (TSTR("Block %d has suspect sequence number of %d"TENDSTR), - n, bi->sequenceNumber)); -} - -static void yaffs_VerifyCollectedBlock(yaffs_Device *dev, yaffs_BlockInfo *bi, - int n) -{ - yaffs_VerifyBlock(dev, bi, n); - - /* After collection the block should be in the erased state */ - /* This will need to change if we do partial gc */ - - if (bi->blockState != YAFFS_BLOCK_STATE_COLLECTING && - bi->blockState != YAFFS_BLOCK_STATE_EMPTY) { - T(YAFFS_TRACE_ERROR, (TSTR("Block %d is in state %d after gc, should be erased"TENDSTR), - n, bi->blockState)); - } -} - -static void yaffs_VerifyBlocks(yaffs_Device *dev) -{ - int i; - int nBlocksPerState[YAFFS_NUMBER_OF_BLOCK_STATES]; - int nIllegalBlockStates = 0; - - if (yaffs_SkipVerification(dev)) - return; - - memset(nBlocksPerState, 0, sizeof(nBlocksPerState)); - - for (i = dev->internalStartBlock; i <= dev->internalEndBlock; i++) { - yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, i); - yaffs_VerifyBlock(dev, bi, i); - - if (bi->blockState < YAFFS_NUMBER_OF_BLOCK_STATES) - nBlocksPerState[bi->blockState]++; - else - nIllegalBlockStates++; - } - - T(YAFFS_TRACE_VERIFY, (TSTR(""TENDSTR))); - T(YAFFS_TRACE_VERIFY, (TSTR("Block summary"TENDSTR))); - - T(YAFFS_TRACE_VERIFY, (TSTR("%d blocks have illegal states"TENDSTR), nIllegalBlockStates)); - if (nBlocksPerState[YAFFS_BLOCK_STATE_ALLOCATING] > 1) - T(YAFFS_TRACE_VERIFY, (TSTR("Too many allocating blocks"TENDSTR))); - - for (i = 0; i < YAFFS_NUMBER_OF_BLOCK_STATES; i++) - T(YAFFS_TRACE_VERIFY, - (TSTR("%s %d blocks"TENDSTR), - blockStateName[i], nBlocksPerState[i])); - - if (dev->blocksInCheckpoint != nBlocksPerState[YAFFS_BLOCK_STATE_CHECKPOINT]) - T(YAFFS_TRACE_VERIFY, - (TSTR("Checkpoint block count wrong dev %d count %d"TENDSTR), - dev->blocksInCheckpoint, nBlocksPerState[YAFFS_BLOCK_STATE_CHECKPOINT])); - - if (dev->nErasedBlocks != nBlocksPerState[YAFFS_BLOCK_STATE_EMPTY]) - T(YAFFS_TRACE_VERIFY, - (TSTR("Erased block count wrong dev %d count %d"TENDSTR), - dev->nErasedBlocks, nBlocksPerState[YAFFS_BLOCK_STATE_EMPTY])); - - if (nBlocksPerState[YAFFS_BLOCK_STATE_COLLECTING] > 1) - T(YAFFS_TRACE_VERIFY, - (TSTR("Too many collecting blocks %d (max is 1)"TENDSTR), - nBlocksPerState[YAFFS_BLOCK_STATE_COLLECTING])); - - T(YAFFS_TRACE_VERIFY, (TSTR(""TENDSTR))); - -} - -/* - * Verify the object header. oh must be valid, but obj and tags may be NULL in which - * case those tests will not be performed. - */ -static void yaffs_VerifyObjectHeader(yaffs_Object *obj, yaffs_ObjectHeader *oh, yaffs_ExtendedTags *tags, int parentCheck) -{ - if (obj && yaffs_SkipVerification(obj->myDev)) - return; - - if (!(tags && obj && oh)) { - T(YAFFS_TRACE_VERIFY, - (TSTR("Verifying object header tags %x obj %x oh %x"TENDSTR), - (__u32)tags, (__u32)obj, (__u32)oh)); - return; - } - - if (oh->type <= YAFFS_OBJECT_TYPE_UNKNOWN || - oh->type > YAFFS_OBJECT_TYPE_MAX) - T(YAFFS_TRACE_VERIFY, - (TSTR("Obj %d header type is illegal value 0x%x"TENDSTR), - tags->objectId, oh->type)); - - if (tags->objectId != obj->objectId) - T(YAFFS_TRACE_VERIFY, - (TSTR("Obj %d header mismatch objectId %d"TENDSTR), - tags->objectId, obj->objectId)); - - - /* - * Check that the object's parent ids match if parentCheck requested. - * - * Tests do not apply to the root object. - */ - - if (parentCheck && tags->objectId > 1 && !obj->parent) - T(YAFFS_TRACE_VERIFY, - (TSTR("Obj %d header mismatch parentId %d obj->parent is NULL"TENDSTR), - tags->objectId, oh->parentObjectId)); - - if (parentCheck && obj->parent && - oh->parentObjectId != obj->parent->objectId && - (oh->parentObjectId != YAFFS_OBJECTID_UNLINKED || - obj->parent->objectId != YAFFS_OBJECTID_DELETED)) - T(YAFFS_TRACE_VERIFY, - (TSTR("Obj %d header mismatch parentId %d parentObjectId %d"TENDSTR), - tags->objectId, oh->parentObjectId, obj->parent->objectId)); - - if (tags->objectId > 1 && oh->name[0] == 0) /* Null name */ - T(YAFFS_TRACE_VERIFY, - (TSTR("Obj %d header name is NULL"TENDSTR), - obj->objectId)); - - if (tags->objectId > 1 && ((__u8)(oh->name[0])) == 0xff) /* Trashed name */ - T(YAFFS_TRACE_VERIFY, - (TSTR("Obj %d header name is 0xFF"TENDSTR), - obj->objectId)); -} - - - -static int yaffs_VerifyTnodeWorker(yaffs_Object *obj, yaffs_Tnode *tn, - __u32 level, int chunkOffset) -{ - int i; - yaffs_Device *dev = obj->myDev; - int ok = 1; - - if (tn) { - if (level > 0) { - - for (i = 0; i < YAFFS_NTNODES_INTERNAL && ok; i++) { - if (tn->internal[i]) { - ok = yaffs_VerifyTnodeWorker(obj, - tn->internal[i], - level - 1, - (chunkOffset<<YAFFS_TNODES_INTERNAL_BITS) + i); - } - } - } else if (level == 0) { - yaffs_ExtendedTags tags; - __u32 objectId = obj->objectId; - - chunkOffset <<= YAFFS_TNODES_LEVEL0_BITS; - - for (i = 0; i < YAFFS_NTNODES_LEVEL0; i++) { - __u32 theChunk = yaffs_GetChunkGroupBase(dev, tn, i); - - if (theChunk > 0) { - /* T(~0,(TSTR("verifying (%d:%d) %d"TENDSTR),tags.objectId,tags.chunkId,theChunk)); */ - yaffs_ReadChunkWithTagsFromNAND(dev, theChunk, NULL, &tags); - if (tags.objectId != objectId || tags.chunkId != chunkOffset) { - T(~0, (TSTR("Object %d chunkId %d NAND mismatch chunk %d tags (%d:%d)"TENDSTR), - objectId, chunkOffset, theChunk, - tags.objectId, tags.chunkId)); - } - } - chunkOffset++; - } - } - } - - return ok; - -} - - -static void yaffs_VerifyFile(yaffs_Object *obj) -{ - int requiredTallness; - int actualTallness; - __u32 lastChunk; - __u32 x; - __u32 i; - yaffs_Device *dev; - yaffs_ExtendedTags tags; - yaffs_Tnode *tn; - __u32 objectId; - - if (!obj) - return; - - if (yaffs_SkipVerification(obj->myDev)) - return; - - dev = obj->myDev; - objectId = obj->objectId; - - /* Check file size is consistent with tnode depth */ - lastChunk = obj->variant.fileVariant.fileSize / dev->nDataBytesPerChunk + 1; - x = lastChunk >> YAFFS_TNODES_LEVEL0_BITS; - requiredTallness = 0; - while (x > 0) { - x >>= YAFFS_TNODES_INTERNAL_BITS; - requiredTallness++; - } - - actualTallness = obj->variant.fileVariant.topLevel; - - if (requiredTallness > actualTallness) - T(YAFFS_TRACE_VERIFY, - (TSTR("Obj %d had tnode tallness %d, needs to be %d"TENDSTR), - obj->objectId, actualTallness, requiredTallness)); - - - /* Check that the chunks in the tnode tree are all correct. - * We do this by scanning through the tnode tree and - * checking the tags for every chunk match. - */ - - if (yaffs_SkipNANDVerification(dev)) - return; - - for (i = 1; i <= lastChunk; i++) { - tn = yaffs_FindLevel0Tnode(dev, &obj->variant.fileVariant, i); - - if (tn) { - __u32 theChunk = yaffs_GetChunkGroupBase(dev, tn, i); - if (theChunk > 0) { - /* T(~0,(TSTR("verifying (%d:%d) %d"TENDSTR),objectId,i,theChunk)); */ - yaffs_ReadChunkWithTagsFromNAND(dev, theChunk, NULL, &tags); - if (tags.objectId != objectId || tags.chunkId != i) { - T(~0, (TSTR("Object %d chunkId %d NAND mismatch chunk %d tags (%d:%d)"TENDSTR), - objectId, i, theChunk, - tags.objectId, tags.chunkId)); - } - } - } - } -} - - -static void yaffs_VerifyHardLink(yaffs_Object *obj) -{ - if (obj && yaffs_SkipVerification(obj->myDev)) - return; - - /* Verify sane equivalent object */ -} - -static void yaffs_VerifySymlink(yaffs_Object *obj) -{ - if (obj && yaffs_SkipVerification(obj->myDev)) - return; - - /* Verify symlink string */ -} - -static void yaffs_VerifySpecial(yaffs_Object *obj) -{ - if (obj && yaffs_SkipVerification(obj->myDev)) - return; -} - -static void yaffs_VerifyObject(yaffs_Object *obj) -{ - yaffs_Device *dev; - - __u32 chunkMin; - __u32 chunkMax; - - __u32 chunkIdOk; - __u32 chunkInRange; - __u32 chunkShouldNotBeDeleted; - __u32 chunkValid; - - if (!obj) - return; - - if (obj->beingCreated) - return; - - dev = obj->myDev; - - if (yaffs_SkipVerification(dev)) - return; - - /* Check sane object header chunk */ - - chunkMin = dev->internalStartBlock * dev->nChunksPerBlock; - chunkMax = (dev->internalEndBlock+1) * dev->nChunksPerBlock - 1; - - chunkInRange = (((unsigned)(obj->hdrChunk)) >= chunkMin && ((unsigned)(obj->hdrChunk)) <= chunkMax); - chunkIdOk = chunkInRange || obj->hdrChunk == 0; - chunkValid = chunkInRange && - yaffs_CheckChunkBit(dev, - obj->hdrChunk / dev->nChunksPerBlock, - obj->hdrChunk % dev->nChunksPerBlock); - chunkShouldNotBeDeleted = chunkInRange && !chunkValid; - - if (!obj->fake && - (!chunkIdOk || chunkShouldNotBeDeleted)) { - T(YAFFS_TRACE_VERIFY, - (TSTR("Obj %d has chunkId %d %s %s"TENDSTR), - obj->objectId, obj->hdrChunk, - chunkIdOk ? "" : ",out of range", - chunkShouldNotBeDeleted ? ",marked as deleted" : "")); - } - - if (chunkValid && !yaffs_SkipNANDVerification(dev)) { - yaffs_ExtendedTags tags; - yaffs_ObjectHeader *oh; - __u8 *buffer = yaffs_GetTempBuffer(dev, __LINE__); - - oh = (yaffs_ObjectHeader *)buffer; - - yaffs_ReadChunkWithTagsFromNAND(dev, obj->hdrChunk, buffer, - &tags); - - yaffs_VerifyObjectHeader(obj, oh, &tags, 1); - - yaffs_ReleaseTempBuffer(dev, buffer, __LINE__); - } - - /* Verify it has a parent */ - if (obj && !obj->fake && - (!obj->parent || obj->parent->myDev != dev)) { - T(YAFFS_TRACE_VERIFY, - (TSTR("Obj %d has parent pointer %p which does not look like an object"TENDSTR), - obj->objectId, obj->parent)); - } - - /* Verify parent is a directory */ - if (obj->parent && obj->parent->variantType != YAFFS_OBJECT_TYPE_DIRECTORY) { - T(YAFFS_TRACE_VERIFY, - (TSTR("Obj %d's parent is not a directory (type %d)"TENDSTR), - obj->objectId, obj->parent->variantType)); - } - - switch (obj->variantType) { - case YAFFS_OBJECT_TYPE_FILE: - yaffs_VerifyFile(obj); - break; - case YAFFS_OBJECT_TYPE_SYMLINK: - yaffs_VerifySymlink(obj); - break; - case YAFFS_OBJECT_TYPE_DIRECTORY: - yaffs_VerifyDirectory(obj); - break; - case YAFFS_OBJECT_TYPE_HARDLINK: - yaffs_VerifyHardLink(obj); - break; - case YAFFS_OBJECT_TYPE_SPECIAL: - yaffs_VerifySpecial(obj); - break; - case YAFFS_OBJECT_TYPE_UNKNOWN: - default: - T(YAFFS_TRACE_VERIFY, - (TSTR("Obj %d has illegaltype %d"TENDSTR), - obj->objectId, obj->variantType)); - break; - } -} - -static void yaffs_VerifyObjects(yaffs_Device *dev) -{ - yaffs_Object *obj; - int i; - struct ylist_head *lh; - - if (yaffs_SkipVerification(dev)) - return; - /* Iterate through the objects in each hash entry */ - - for (i = 0; i < YAFFS_NOBJECT_BUCKETS; i++) { - ylist_for_each(lh, &dev->objectBucket[i].list) { - if (lh) { - obj = ylist_entry(lh, yaffs_Object, hashLink); - yaffs_VerifyObject(obj); - } - } - } -} /* * Simple hash function. Needs to have a reasonable spread */ -static Y_INLINE int yaffs_HashFunction(int n) +static Y_INLINE int yaffs_hash_fn(int n) { n = abs(n); return n % YAFFS_NOBJECT_BUCKETS; @@ -867,14 +309,14 @@ static Y_INLINE int yaffs_HashFunction(int n) * Note that root might have a presence in NAND if permissions are set. */ -yaffs_Object *yaffs_Root(yaffs_Device *dev) +yaffs_obj_t *yaffs_root(yaffs_dev_t *dev) { - return dev->rootDir; + return dev->root_dir; } -yaffs_Object *yaffs_LostNFound(yaffs_Device *dev) +yaffs_obj_t *yaffs_lost_n_found(yaffs_dev_t *dev) { - return dev->lostNFoundDir; + return dev->lost_n_found; } @@ -882,10 +324,10 @@ yaffs_Object *yaffs_LostNFound(yaffs_Device *dev) * Erased NAND checking functions */ -int yaffs_CheckFF(__u8 *buffer, int nBytes) +int yaffs_check_ff(__u8 *buffer, int n_bytes) { /* Horrible, slow implementation */ - while (nBytes--) { + while (n_bytes--) { if (*buffer != 0xFF) return 0; buffer++; @@ -893,47 +335,70 @@ int yaffs_CheckFF(__u8 *buffer, int nBytes) return 1; } -static int yaffs_CheckChunkErased(struct yaffs_DeviceStruct *dev, - int chunkInNAND) +static int yaffs_check_chunk_erased(struct yaffs_dev_s *dev, + int nand_chunk) { int retval = YAFFS_OK; - __u8 *data = yaffs_GetTempBuffer(dev, __LINE__); - yaffs_ExtendedTags tags; + __u8 *data = yaffs_get_temp_buffer(dev, __LINE__); + yaffs_ext_tags tags; int result; - result = yaffs_ReadChunkWithTagsFromNAND(dev, chunkInNAND, data, &tags); + result = yaffs_rd_chunk_tags_nand(dev, nand_chunk, data, &tags); - if (tags.eccResult > YAFFS_ECC_RESULT_NO_ERROR) + if (tags.ecc_result > YAFFS_ECC_RESULT_NO_ERROR) retval = YAFFS_FAIL; - if (!yaffs_CheckFF(data, dev->nDataBytesPerChunk) || tags.chunkUsed) { + if (!yaffs_check_ff(data, dev->data_bytes_per_chunk) || tags.chunk_used) { T(YAFFS_TRACE_NANDACCESS, - (TSTR("Chunk %d not erased" TENDSTR), chunkInNAND)); + (TSTR("Chunk %d not erased" TENDSTR), nand_chunk)); retval = YAFFS_FAIL; } - yaffs_ReleaseTempBuffer(dev, data, __LINE__); + yaffs_release_temp_buffer(dev, data, __LINE__); return retval; } -static int yaffs_WriteNewChunkWithTagsToNAND(struct yaffs_DeviceStruct *dev, + +static int yaffs_verify_chunk_written(yaffs_dev_t *dev, + int nand_chunk, const __u8 *data, - yaffs_ExtendedTags *tags, + yaffs_ext_tags *tags) +{ + int retval = YAFFS_OK; + yaffs_ext_tags tempTags; + __u8 *buffer = yaffs_get_temp_buffer(dev,__LINE__); + int result; + + result = yaffs_rd_chunk_tags_nand(dev,nand_chunk,buffer,&tempTags); + if(memcmp(buffer,data,dev->data_bytes_per_chunk) || + tempTags.obj_id != tags->obj_id || + tempTags.chunk_id != tags->chunk_id || + tempTags.n_bytes != tags->n_bytes) + retval = YAFFS_FAIL; + + yaffs_release_temp_buffer(dev, buffer, __LINE__); + + return retval; +} + +static int yaffs_write_new_chunk(struct yaffs_dev_s *dev, + const __u8 *data, + yaffs_ext_tags *tags, int useReserve) { int attempts = 0; int writeOk = 0; int chunk; - yaffs_InvalidateCheckpoint(dev); + yaffs2_checkpt_invalidate(dev); do { - yaffs_BlockInfo *bi = 0; + yaffs_block_info_t *bi = 0; int erasedOk = 0; - chunk = yaffs_AllocateChunk(dev, useReserve, &bi); + chunk = yaffs_alloc_chunk(dev, useReserve, &bi); if (chunk < 0) { /* no space */ break; @@ -957,42 +422,51 @@ static int yaffs_WriteNewChunkWithTagsToNAND(struct yaffs_DeviceStruct *dev, * 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 (bi->gcPrioritise) { - yaffs_DeleteChunk(dev, chunk, 1, __LINE__); - /* try another chunk */ - continue; - } /* let's give it a try */ attempts++; -#ifdef CONFIG_YAFFS_ALWAYS_CHECK_CHUNK_ERASED - bi->skipErasedCheck = 0; -#endif - if (!bi->skipErasedCheck) { - erasedOk = yaffs_CheckChunkErased(dev, chunk); + if(dev->param.always_check_erased) + bi->skip_erased_check = 0; + + if (!bi->skip_erased_check) { + erasedOk = yaffs_check_chunk_erased(dev, chunk); if (erasedOk != YAFFS_OK) { T(YAFFS_TRACE_ERROR, (TSTR("**>> yaffs chunk %d was not erased" TENDSTR), chunk)); - /* try another chunk */ + /* If not erased, delete this one, + * skip rest of block and + * try another chunk */ + yaffs_chunk_del(dev,chunk,1,__LINE__); + yaffs_skip_rest_of_block(dev); continue; } - bi->skipErasedCheck = 1; } - writeOk = yaffs_WriteChunkWithTagsToNAND(dev, chunk, + writeOk = yaffs_wr_chunk_tags_nand(dev, chunk, data, tags); + + if(!bi->skip_erased_check) + writeOk = yaffs_verify_chunk_written(dev, chunk, data, tags); + if (writeOk != YAFFS_OK) { - yaffs_HandleWriteChunkError(dev, chunk, erasedOk); - /* try another chunk */ + /* Clean up aborted write, skip to next block and + * try another chunk */ + yaffs_handle_chunk_wr_error(dev, chunk, erasedOk); continue; } + bi->skip_erased_check = 1; + /* Copy the data into the robustification buffer */ - yaffs_HandleWriteChunkOk(dev, chunk, data, tags); + yaffs_handle_chunk_wr_ok(dev, chunk, data, tags); } while (writeOk != YAFFS_OK && (yaffs_wr_attempts <= 0 || attempts <= yaffs_wr_attempts)); @@ -1005,51 +479,55 @@ static int yaffs_WriteNewChunkWithTagsToNAND(struct yaffs_DeviceStruct *dev, (TSTR("**>> yaffs write required %d attempts" TENDSTR), attempts)); - dev->nRetriedWrites += (attempts - 1); + dev->n_retired_writes += (attempts - 1); } return chunk; } + + /* * Block retiring for handling a broken block. */ -static void yaffs_RetireBlock(yaffs_Device *dev, int blockInNAND) +static void yaffs_retire_block(yaffs_dev_t *dev, int flash_block) { - yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, blockInNAND); + yaffs_block_info_t *bi = yaffs_get_block_info(dev, flash_block); - yaffs_InvalidateCheckpoint(dev); + yaffs2_checkpt_invalidate(dev); + + yaffs2_clear_oldest_dirty_seq(dev,bi); - if (yaffs_MarkBlockBad(dev, blockInNAND) != YAFFS_OK) { - if (yaffs_EraseBlockInNAND(dev, blockInNAND) != YAFFS_OK) { + if (yaffs_mark_bad(dev, flash_block) != YAFFS_OK) { + if (yaffs_erase_block(dev, flash_block) != YAFFS_OK) { T(YAFFS_TRACE_ALWAYS, (TSTR( "yaffs: Failed to mark bad and erase block %d" - TENDSTR), blockInNAND)); + TENDSTR), flash_block)); } else { - yaffs_ExtendedTags tags; - int chunkId = blockInNAND * dev->nChunksPerBlock; + yaffs_ext_tags tags; + int chunk_id = flash_block * dev->param.chunks_per_block; - __u8 *buffer = yaffs_GetTempBuffer(dev, __LINE__); + __u8 *buffer = yaffs_get_temp_buffer(dev, __LINE__); - memset(buffer, 0xff, dev->nDataBytesPerChunk); - yaffs_InitialiseTags(&tags); - tags.sequenceNumber = YAFFS_SEQUENCE_BAD_BLOCK; - if (dev->writeChunkWithTagsToNAND(dev, chunkId - - dev->chunkOffset, buffer, &tags) != YAFFS_OK) + memset(buffer, 0xff, dev->data_bytes_per_chunk); + yaffs_init_tags(&tags); + tags.seq_number = YAFFS_SEQUENCE_BAD_BLOCK; + if (dev->param.write_chunk_tags_fn(dev, chunk_id - + dev->chunk_offset, buffer, &tags) != YAFFS_OK) T(YAFFS_TRACE_ALWAYS, (TSTR("yaffs: Failed to " TCONT("write bad block marker to block %d") - TENDSTR), blockInNAND)); + TENDSTR), flash_block)); - yaffs_ReleaseTempBuffer(dev, buffer, __LINE__); + yaffs_release_temp_buffer(dev, buffer, __LINE__); } } - bi->blockState = YAFFS_BLOCK_STATE_DEAD; - bi->gcPrioritise = 0; - bi->needsRetiring = 0; + bi->block_state = YAFFS_BLOCK_STATE_DEAD; + bi->gc_prioritise = 0; + bi->needs_retiring = 0; - dev->nRetiredBlocks++; + dev->n_retired_blocks++; } /* @@ -1057,55 +535,63 @@ static void yaffs_RetireBlock(yaffs_Device *dev, int blockInNAND) * */ -static void yaffs_HandleWriteChunkOk(yaffs_Device *dev, int chunkInNAND, +static void yaffs_handle_chunk_wr_ok(yaffs_dev_t *dev, int nand_chunk, const __u8 *data, - const yaffs_ExtendedTags *tags) + const yaffs_ext_tags *tags) { + dev=dev; + nand_chunk=nand_chunk; + data=data; + tags=tags; } -static void yaffs_HandleUpdateChunk(yaffs_Device *dev, int chunkInNAND, - const yaffs_ExtendedTags *tags) +static void yaffs_handle_chunk_update(yaffs_dev_t *dev, int nand_chunk, + const yaffs_ext_tags *tags) { + dev=dev; + nand_chunk=nand_chunk; + tags=tags; } -void yaffs_HandleChunkError(yaffs_Device *dev, yaffs_BlockInfo *bi) +void yaffs_handle_chunk_error(yaffs_dev_t *dev, yaffs_block_info_t *bi) { - if (!bi->gcPrioritise) { - bi->gcPrioritise = 1; - dev->hasPendingPrioritisedGCs = 1; - bi->chunkErrorStrikes++; + if (!bi->gc_prioritise) { + bi->gc_prioritise = 1; + dev->has_pending_prioritised_gc = 1; + bi->chunk_error_strikes++; - if (bi->chunkErrorStrikes > 3) { - bi->needsRetiring = 1; /* Too many stikes, so retire this */ + if (bi->chunk_error_strikes > 3) { + bi->needs_retiring = 1; /* Too many stikes, so retire this */ T(YAFFS_TRACE_ALWAYS, (TSTR("yaffs: Block struck out" TENDSTR))); } } } -static void yaffs_HandleWriteChunkError(yaffs_Device *dev, int chunkInNAND, +static void yaffs_handle_chunk_wr_error(yaffs_dev_t *dev, int nand_chunk, int erasedOk) { - int blockInNAND = chunkInNAND / dev->nChunksPerBlock; - yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, blockInNAND); + int flash_block = nand_chunk / dev->param.chunks_per_block; + yaffs_block_info_t *bi = yaffs_get_block_info(dev, flash_block); - yaffs_HandleChunkError(dev, bi); + yaffs_handle_chunk_error(dev, bi); if (erasedOk) { /* Was an actual write failure, so mark the block for retirement */ - bi->needsRetiring = 1; + bi->needs_retiring = 1; T(YAFFS_TRACE_ERROR | YAFFS_TRACE_BAD_BLOCKS, - (TSTR("**>> Block %d needs retiring" TENDSTR), blockInNAND)); + (TSTR("**>> Block %d needs retiring" TENDSTR), flash_block)); } /* Delete the chunk */ - yaffs_DeleteChunk(dev, chunkInNAND, 1, __LINE__); + yaffs_chunk_del(dev, nand_chunk, 1, __LINE__); + yaffs_skip_rest_of_block(dev); } /*---------------- Name handling functions ------------*/ -static __u16 yaffs_CalcNameSum(const YCHAR *name) +static __u16 yaffs_calc_name_sum(const YCHAR *name) { __u16 sum = 0; __u16 i = 1; @@ -1126,16 +612,28 @@ static __u16 yaffs_CalcNameSum(const YCHAR *name) return sum; } -static void yaffs_SetObjectName(yaffs_Object *obj, const YCHAR *name) +void yaffs_set_obj_name(yaffs_obj_t *obj, const YCHAR *name) { #ifdef CONFIG_YAFFS_SHORT_NAMES_IN_RAM - memset(obj->shortName, 0, sizeof(YCHAR) * (YAFFS_SHORT_NAME_LENGTH+1)); - if (name && yaffs_strlen(name) <= YAFFS_SHORT_NAME_LENGTH) - yaffs_strcpy(obj->shortName, name); + memset(obj->short_name, 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->short_name, name); else - obj->shortName[0] = _Y('\0'); + obj->short_name[0] = _Y('\0'); +#endif + obj->sum = yaffs_calc_name_sum(name); +} + +void yaffs_set_obj_name_from_oh(yaffs_obj_t *obj, const yaffs_obj_header *oh) +{ +#ifdef CONFIG_YAFFS_AUTO_UNICODE + YCHAR tmpName[YAFFS_MAX_NAME_LENGTH+1]; + memset(tmpName,0,sizeof(tmpName)); + yaffs_load_name_from_oh(obj->my_dev,tmpName,oh->name,YAFFS_MAX_NAME_LENGTH+1); + yaffs_set_obj_name(obj,tmpName); +#else + yaffs_set_obj_name(obj,oh->name); #endif - obj->sum = yaffs_CalcNameSum(name); } /*-------------------- TNODES ------------------- @@ -1145,185 +643,37 @@ static void yaffs_SetObjectName(yaffs_Object *obj, const YCHAR *name) * 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) +yaffs_tnode_t *yaffs_get_tnode(yaffs_dev_t *dev) { - 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; - - if (tnodeSize < sizeof(yaffs_Tnode)) - tnodeSize = sizeof(yaffs_Tnode); - - /* 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; + yaffs_tnode_t *tn = yaffs_alloc_raw_tnode(dev); + if (tn){ + memset(tn, 0, dev->tnode_size); + dev->n_tnodes++; } - /* 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; - } - - 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))); - return YAFFS_FAIL; - } else { - tnl->tnodes = newTnodes; - tnl->next = dev->allocatedTnodeList; - dev->allocatedTnodeList = tnl; - } - - T(YAFFS_TRACE_ALLOCATE, (TSTR("yaffs: Tnodes added" TENDSTR))); - - return YAFFS_OK; -} - -/* GetTnode gets us a clean tnode. Tries to make allocate more if we run out */ - -static yaffs_Tnode *yaffs_GetTnodeRaw(yaffs_Device *dev) -{ - yaffs_Tnode *tn = NULL; - - /* If there are none left make more */ - if (!dev->freeTnodes) - yaffs_CreateTnodes(dev, YAFFS_ALLOCATION_NTNODES); - - 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--; - } - - dev->nCheckpointBlocksRequired = 0; /* force recalculation*/ - - return tn; -} - -static yaffs_Tnode *yaffs_GetTnode(yaffs_Device *dev) -{ - yaffs_Tnode *tn = yaffs_GetTnodeRaw(dev); - int tnodeSize = (dev->tnodeWidth * YAFFS_NTNODES_LEVEL0)/8; - - if (tnodeSize < sizeof(yaffs_Tnode)) - tnodeSize = sizeof(yaffs_Tnode); - - if (tn) - memset(tn, 0, tnodeSize); + dev->checkpoint_blocks_required = 0; /* force recalculation*/ return tn; } /* FreeTnode frees up a tnode and puts it back on the free list */ -static void yaffs_FreeTnode(yaffs_Device *dev, yaffs_Tnode *tn) +static void yaffs_free_tnode(yaffs_dev_t *dev, yaffs_tnode_t *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++; - } - dev->nCheckpointBlocksRequired = 0; /* force recalculation*/ -} - -static void yaffs_DeinitialiseTnodes(yaffs_Device *dev) -{ - /* Free the list of allocated tnodes */ - yaffs_TnodeList *tmp; - - while (dev->allocatedTnodeList) { - tmp = dev->allocatedTnodeList->next; - - YFREE(dev->allocatedTnodeList->tnodes); - YFREE(dev->allocatedTnodeList); - dev->allocatedTnodeList = tmp; - - } - - dev->freeTnodes = NULL; - dev->nFreeTnodes = 0; + yaffs_free_raw_tnode(dev,tn); + dev->n_tnodes--; + dev->checkpoint_blocks_required = 0; /* force recalculation*/ } -static void yaffs_InitialiseTnodes(yaffs_Device *dev) +static void yaffs_deinit_tnodes_and_objs(yaffs_dev_t *dev) { - dev->allocatedTnodeList = NULL; - dev->freeTnodes = NULL; - dev->nFreeTnodes = 0; - dev->nTnodesCreated = 0; + yaffs_deinit_raw_tnodes_and_objs(dev); + dev->n_obj = 0; + dev->n_tnodes = 0; } -void yaffs_PutLevel0Tnode(yaffs_Device *dev, yaffs_Tnode *tn, unsigned pos, +void yaffs_load_tnode_0(yaffs_dev_t *dev, yaffs_tnode_t *tn, unsigned pos, unsigned val) { __u32 *map = (__u32 *)tn; @@ -1333,27 +683,27 @@ void yaffs_PutLevel0Tnode(yaffs_Device *dev, yaffs_Tnode *tn, unsigned pos, __u32 mask; pos &= YAFFS_TNODES_LEVEL0_MASK; - val >>= dev->chunkGroupBits; + val >>= dev->chunk_grp_bits; - bitInMap = pos * dev->tnodeWidth; + bitInMap = pos * dev->tnode_width; wordInMap = bitInMap / 32; bitInWord = bitInMap & (32 - 1); - mask = dev->tnodeMask << bitInWord; + mask = dev->tnode_mask << bitInWord; map[wordInMap] &= ~mask; map[wordInMap] |= (mask & (val << bitInWord)); - if (dev->tnodeWidth > (32 - bitInWord)) { + if (dev->tnode_width > (32 - bitInWord)) { bitInWord = (32 - bitInWord); wordInMap++;; - mask = dev->tnodeMask >> (/*dev->tnodeWidth -*/ bitInWord); + mask = dev->tnode_mask >> (/*dev->tnode_width -*/ bitInWord); map[wordInMap] &= ~mask; map[wordInMap] |= (mask & (val >> bitInWord)); } } -static __u32 yaffs_GetChunkGroupBase(yaffs_Device *dev, yaffs_Tnode *tn, +__u32 yaffs_get_group_base(yaffs_dev_t *dev, yaffs_tnode_t *tn, unsigned pos) { __u32 *map = (__u32 *)tn; @@ -1364,20 +714,20 @@ static __u32 yaffs_GetChunkGroupBase(yaffs_Device *dev, yaffs_Tnode *tn, pos &= YAFFS_TNODES_LEVEL0_MASK; - bitInMap = pos * dev->tnodeWidth; + bitInMap = pos * dev->tnode_width; wordInMap = bitInMap / 32; bitInWord = bitInMap & (32 - 1); val = map[wordInMap] >> bitInWord; - if (dev->tnodeWidth > (32 - bitInWord)) { + if (dev->tnode_width > (32 - bitInWord)) { bitInWord = (32 - bitInWord); wordInMap++;; val |= (map[wordInMap] << bitInWord); } - val &= dev->tnodeMask; - val <<= dev->chunkGroupBits; + val &= dev->tnode_mask; + val <<= dev->chunk_grp_bits; return val; } @@ -1385,42 +735,44 @@ static __u32 yaffs_GetChunkGroupBase(yaffs_Device *dev, yaffs_Tnode *tn, /* ------------------- 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 + * The look up tree is represented by the top tnode and the number of top_level * in the tree. 0 means only the level 0 tnode is in the tree. */ /* FindLevel0Tnode finds the level 0 tnode, if one exists. */ -static yaffs_Tnode *yaffs_FindLevel0Tnode(yaffs_Device *dev, - yaffs_FileStructure *fStruct, - __u32 chunkId) +yaffs_tnode_t *yaffs_find_tnode_0(yaffs_dev_t *dev, + yaffs_file_s *file_struct, + __u32 chunk_id) { - yaffs_Tnode *tn = fStruct->top; + yaffs_tnode_t *tn = file_struct->top; __u32 i; int requiredTallness; - int level = fStruct->topLevel; + int level = file_struct->top_level; + + dev=dev; /* Check sane level and chunk Id */ if (level < 0 || level > YAFFS_TNODES_MAX_LEVEL) return NULL; - if (chunkId > YAFFS_MAX_CHUNK_ID) + if (chunk_id > YAFFS_MAX_CHUNK_ID) return NULL; - /* First check we're tall enough (ie enough topLevel) */ + /* First check we're tall enough (ie enough top_level) */ - i = chunkId >> YAFFS_TNODES_LEVEL0_BITS; + i = chunk_id >> YAFFS_TNODES_LEVEL0_BITS; requiredTallness = 0; while (i) { i >>= YAFFS_TNODES_INTERNAL_BITS; requiredTallness++; } - if (requiredTallness > fStruct->topLevel) + if (requiredTallness > file_struct->top_level) return NULL; /* Not tall enough, so we can't find it */ /* Traverse down to level 0 */ while (level > 0 && tn) { - tn = tn->internal[(chunkId >> + tn = tn->internal[(chunk_id >> (YAFFS_TNODES_LEVEL0_BITS + (level - 1) * YAFFS_TNODES_INTERNAL_BITS)) & @@ -1442,29 +794,29 @@ static yaffs_Tnode *yaffs_FindLevel0Tnode(yaffs_Device *dev, * be plugged into the ttree. */ -static yaffs_Tnode *yaffs_AddOrFindLevel0Tnode(yaffs_Device *dev, - yaffs_FileStructure *fStruct, - __u32 chunkId, - yaffs_Tnode *passedTn) +yaffs_tnode_t *yaffs_add_find_tnode_0(yaffs_dev_t *dev, + yaffs_file_s *file_struct, + __u32 chunk_id, + yaffs_tnode_t *passed_tn) { int requiredTallness; int i; int l; - yaffs_Tnode *tn; + yaffs_tnode_t *tn; __u32 x; /* Check sane level and page Id */ - if (fStruct->topLevel < 0 || fStruct->topLevel > YAFFS_TNODES_MAX_LEVEL) + if (file_struct->top_level < 0 || file_struct->top_level > YAFFS_TNODES_MAX_LEVEL) return NULL; - if (chunkId > YAFFS_MAX_CHUNK_ID) + if (chunk_id > YAFFS_MAX_CHUNK_ID) return NULL; - /* First check we're tall enough (ie enough topLevel) */ + /* First check we're tall enough (ie enough top_level) */ - x = chunkId >> YAFFS_TNODES_LEVEL0_BITS; + x = chunk_id >> YAFFS_TNODES_LEVEL0_BITS; requiredTallness = 0; while (x) { x >>= YAFFS_TNODES_INTERNAL_BITS; @@ -1472,32 +824,32 @@ static yaffs_Tnode *yaffs_AddOrFindLevel0Tnode(yaffs_Device *dev, } - if (requiredTallness > fStruct->topLevel) { + if (requiredTallness > file_struct->top_level) { /* Not tall enough, gotta make the tree taller */ - for (i = fStruct->topLevel; i < requiredTallness; i++) { + for (i = file_struct->top_level; i < requiredTallness; i++) { - tn = yaffs_GetTnode(dev); + tn = yaffs_get_tnode(dev); if (tn) { - tn->internal[0] = fStruct->top; - fStruct->top = tn; + tn->internal[0] = file_struct->top; + file_struct->top = tn; + file_struct->top_level++; } 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; + l = file_struct->top_level; + tn = file_struct->top; if (l > 0) { while (l > 0 && tn) { - x = (chunkId >> + x = (chunk_id >> (YAFFS_TNODES_LEVEL0_BITS + (l - 1) * YAFFS_TNODES_INTERNAL_BITS)) & YAFFS_TNODES_INTERNAL_MASK; @@ -1505,19 +857,22 @@ static yaffs_Tnode *yaffs_AddOrFindLevel0Tnode(yaffs_Device *dev, if ((l > 1) && !tn->internal[x]) { /* Add missing non-level-zero tnode */ - tn->internal[x] = yaffs_GetTnode(dev); - + tn->internal[x] = yaffs_get_tnode(dev); + if(!tn->internal[x]) + return NULL; } else if (l == 1) { /* Looking from level 1 at level 0 */ - if (passedTn) { + if (passed_tn) { /* If we already have one, then release it.*/ if (tn->internal[x]) - yaffs_FreeTnode(dev, tn->internal[x]); - tn->internal[x] = passedTn; + yaffs_free_tnode(dev, tn->internal[x]); + tn->internal[x] = passed_tn; } else if (!tn->internal[x]) { /* Don't have one, none passed in */ - tn->internal[x] = yaffs_GetTnode(dev); + tn->internal[x] = yaffs_get_tnode(dev); + if(!tn->internal[x]) + return NULL; } } @@ -1526,29 +881,34 @@ static yaffs_Tnode *yaffs_AddOrFindLevel0Tnode(yaffs_Device *dev, } } else { /* top is level 0 */ - if (passedTn) { - memcpy(tn, passedTn, (dev->tnodeWidth * YAFFS_NTNODES_LEVEL0)/8); - yaffs_FreeTnode(dev, passedTn); + if (passed_tn) { + memcpy(tn, passed_tn, (dev->tnode_width * YAFFS_NTNODES_LEVEL0)/8); + yaffs_free_tnode(dev, passed_tn); } } return tn; } -static int yaffs_FindChunkInGroup(yaffs_Device *dev, int theChunk, - yaffs_ExtendedTags *tags, int objectId, - int chunkInInode) +static int yaffs_find_chunk_in_group(yaffs_dev_t *dev, int theChunk, + yaffs_ext_tags *tags, int obj_id, + int inode_chunk) { 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; */ + for (j = 0; theChunk && j < dev->chunk_grp_size; j++) { + if (yaffs_check_chunk_bit(dev, theChunk / dev->param.chunks_per_block, + theChunk % dev->param.chunks_per_block)) { + + if(dev->chunk_grp_size == 1) return theChunk; + else { + yaffs_rd_chunk_tags_nand(dev, theChunk, NULL, + tags); + if (yaffs_tags_match(tags, obj_id, inode_chunk)) { + /* found it; */ + return theChunk; + } } } theChunk++; @@ -1556,22 +916,23 @@ static int yaffs_FindChunkInGroup(yaffs_Device *dev, int 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 + * 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, - int chunkOffset, int *limit) +static int yaffs_del_worker(yaffs_obj_t *in, yaffs_tnode_t *tn, __u32 level, + int chunk_offset, int *limit) { int i; - int chunkInInode; + int inode_chunk; int theChunk; - yaffs_ExtendedTags tags; + yaffs_ext_tags tags; int foundChunk; - yaffs_Device *dev = in->myDev; + yaffs_dev_t *dev = in->my_dev; int allDone = 1; @@ -1584,20 +945,20 @@ static int yaffs_DeleteWorker(yaffs_Object *in, yaffs_Tnode *tn, __u32 level, allDone = 0; } else { allDone = - yaffs_DeleteWorker(in, + yaffs_del_worker(in, tn-> internal [i], level - 1, - (chunkOffset + (chunk_offset << YAFFS_TNODES_INTERNAL_BITS) + i, limit); } if (allDone) { - yaffs_FreeTnode(dev, + yaffs_free_tnode(dev, tn-> internal[i]); tn->internal[i] = NULL; @@ -1610,24 +971,24 @@ static int yaffs_DeleteWorker(yaffs_Object *in, yaffs_Tnode *tn, __u32 level, for (i = YAFFS_NTNODES_LEVEL0 - 1; i >= 0 && !hitLimit; i--) { - theChunk = yaffs_GetChunkGroupBase(dev, tn, i); + theChunk = yaffs_get_group_base(dev, tn, i); if (theChunk) { - chunkInInode = (chunkOffset << + inode_chunk = (chunk_offset << YAFFS_TNODES_LEVEL0_BITS) + i; foundChunk = - yaffs_FindChunkInGroup(dev, + yaffs_find_chunk_in_group(dev, theChunk, &tags, - in->objectId, - chunkInInode); + in->obj_id, + inode_chunk); if (foundChunk > 0) { - yaffs_DeleteChunk(dev, + yaffs_chunk_del(dev, foundChunk, 1, __LINE__); - in->nDataChunks--; + in->n_data_chunks--; if (limit) { *limit = *limit - 1; if (*limit <= 0) @@ -1636,7 +997,7 @@ static int yaffs_DeleteWorker(yaffs_Object *in, yaffs_Tnode *tn, __u32 level, } - yaffs_PutLevel0Tnode(dev, tn, i, 0); + yaffs_load_tnode_0(dev, tn, i, 0); } } @@ -1650,16 +1011,21 @@ static int yaffs_DeleteWorker(yaffs_Object *in, yaffs_Tnode *tn, __u32 level, } -static void yaffs_SoftDeleteChunk(yaffs_Device *dev, int chunk) +#endif + +static void yaffs_soft_del_chunk(yaffs_dev_t *dev, int chunk) { - yaffs_BlockInfo *theBlock; + yaffs_block_info_t *theBlock; + unsigned block_no; T(YAFFS_TRACE_DELETION, (TSTR("soft delete chunk %d" TENDSTR), chunk)); - theBlock = yaffs_GetBlockInfo(dev, chunk / dev->nChunksPerBlock); + block_no = chunk / dev->param.chunks_per_block; + theBlock = yaffs_get_block_info(dev, block_no); if (theBlock) { - theBlock->softDeletions++; - dev->nFreeChunks++; + theBlock->soft_del_pages++; + dev->n_free_chunks++; + yaffs2_update_oldest_dirty_seq(dev, block_no, theBlock); } } @@ -1669,13 +1035,13 @@ static void yaffs_SoftDeleteChunk(yaffs_Device *dev, int chunk) * 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, - __u32 level, int chunkOffset) +static int yaffs_soft_del_worker(yaffs_obj_t *in, yaffs_tnode_t *tn, + __u32 level, int chunk_offset) { int i; int theChunk; int allDone = 1; - yaffs_Device *dev = in->myDev; + yaffs_dev_t *dev = in->my_dev; if (tn) { if (level > 0) { @@ -1684,16 +1050,16 @@ static int yaffs_SoftDeleteWorker(yaffs_Object *in, yaffs_Tnode *tn, i--) { if (tn->internal[i]) { allDone = - yaffs_SoftDeleteWorker(in, + yaffs_soft_del_worker(in, tn-> internal[i], level - 1, - (chunkOffset + (chunk_offset << YAFFS_TNODES_INTERNAL_BITS) + i); if (allDone) { - yaffs_FreeTnode(dev, + yaffs_free_tnode(dev, tn-> internal[i]); tn->internal[i] = NULL; @@ -1706,14 +1072,14 @@ static int yaffs_SoftDeleteWorker(yaffs_Object *in, yaffs_Tnode *tn, } else if (level == 0) { for (i = YAFFS_NTNODES_LEVEL0 - 1; i >= 0; i--) { - theChunk = yaffs_GetChunkGroupBase(dev, tn, i); + theChunk = yaffs_get_group_base(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 * a block. */ - yaffs_SoftDeleteChunk(dev, theChunk); - yaffs_PutLevel0Tnode(dev, tn, i, 0); + yaffs_soft_del_chunk(dev, theChunk); + yaffs_load_tnode_0(dev, tn, i, 0); } } @@ -1727,25 +1093,25 @@ static int yaffs_SoftDeleteWorker(yaffs_Object *in, yaffs_Tnode *tn, } -static void yaffs_SoftDeleteFile(yaffs_Object *obj) +static void yaffs_soft_del_file(yaffs_obj_t *obj) { if (obj->deleted && - obj->variantType == YAFFS_OBJECT_TYPE_FILE && !obj->softDeleted) { - if (obj->nDataChunks <= 0) { + obj->variant_type == YAFFS_OBJECT_TYPE_FILE && !obj->soft_del) { + if (obj->n_data_chunks <= 0) { /* Empty file with no duplicate object headers, just delete it immediately */ - yaffs_FreeTnode(obj->myDev, - obj->variant.fileVariant.top); - obj->variant.fileVariant.top = NULL; + yaffs_free_tnode(obj->my_dev, + obj->variant.file_variant.top); + obj->variant.file_variant.top = NULL; T(YAFFS_TRACE_TRACING, (TSTR("yaffs: Deleting empty file %d" TENDSTR), - obj->objectId)); - yaffs_DoGenericObjectDeletion(obj); + obj->obj_id)); + yaffs_generic_obj_del(obj); } else { - yaffs_SoftDeleteWorker(obj, - obj->variant.fileVariant.top, - obj->variant.fileVariant. - topLevel, 0); - obj->softDeleted = 1; + yaffs_soft_del_worker(obj, + obj->variant.file_variant.top, + obj->variant.file_variant. + top_level, 0); + obj->soft_del = 1; } } } @@ -1759,9 +1125,13 @@ static void yaffs_SoftDeleteFile(yaffs_Object *obj) * 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, +static yaffs_tnode_t *yaffs_prune_worker(yaffs_dev_t *dev, yaffs_tnode_t *tn, __u32 level, int del0) { int i; @@ -1770,22 +1140,32 @@ static yaffs_Tnode *yaffs_PruneWorker(yaffs_Device *dev, yaffs_Tnode *tn, 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_prune_worker(dev, tn->internal[i], + level - 1, + (i == 0) ? del0 : 1); + } + + if (tn->internal[i]) + hasData++; } + } else { + int tnode_size_u32 = dev->tnode_size/sizeof(__u32); + __u32 *map = (__u32 *)tn; - if (tn->internal[i]) - hasData++; - } + for(i = 0; !hasData && i < tnode_size_u32; i++){ + if(map[i]) + hasData++; + } + } if (hasData == 0 && del0) { /* Free and return NULL */ - yaffs_FreeTnode(dev, tn); + yaffs_free_tnode(dev, tn); tn = NULL; } @@ -1795,17 +1175,17 @@ static yaffs_Tnode *yaffs_PruneWorker(yaffs_Device *dev, yaffs_Tnode *tn, } -static int yaffs_PruneFileStructure(yaffs_Device *dev, - yaffs_FileStructure *fStruct) +static int yaffs_prune_tree(yaffs_dev_t *dev, + yaffs_file_s *file_struct) { int i; int hasData; int done = 0; - yaffs_Tnode *tn; + yaffs_tnode_t *tn; - if (fStruct->topLevel > 0) { - fStruct->top = - yaffs_PruneWorker(dev, fStruct->top, fStruct->topLevel, 0); + if (file_struct->top_level > 0) { + file_struct->top = + yaffs_prune_worker(dev, file_struct->top, file_struct->top_level, 0); /* Now we have a tree with all the non-zero branches NULL but the height * is the same as it was. @@ -1814,8 +1194,8 @@ static int yaffs_PruneFileStructure(yaffs_Device *dev, * (ie all the non-zero are NULL) */ - while (fStruct->topLevel && !done) { - tn = fStruct->top; + while (file_struct->top_level && !done) { + tn = file_struct->top; hasData = 0; for (i = 1; i < YAFFS_NTNODES_INTERNAL; i++) { @@ -1824,9 +1204,9 @@ static int yaffs_PruneFileStructure(yaffs_Device *dev, } if (!hasData) { - fStruct->top = tn->internal[0]; - fStruct->topLevel--; - yaffs_FreeTnode(dev, tn); + file_struct->top = tn->internal[0]; + file_struct->top_level--; + yaffs_free_tnode(dev, tn); } else { done = 1; } @@ -1838,250 +1218,152 @@ static int yaffs_PruneFileStructure(yaffs_Device *dev, /*-------------------- 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)); - list = YMALLOC(sizeof(yaffs_ObjectList)); - - if (!newObjects || !list) { - if (newObjects) - YFREE(newObjects); - if (list) - YFREE(list); - 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 ylist_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->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_obj_t *yaffs_alloc_empty_obj(yaffs_dev_t *dev) { - yaffs_Object *tn = NULL; + yaffs_obj_t *obj = yaffs_alloc_raw_obj(dev); -#ifdef VALGRIND_TEST - tn = YMALLOC(sizeof(yaffs_Object)); -#else - /* If there are none left make more */ - if (!dev->freeObjects) - yaffs_CreateFreeObjects(dev, YAFFS_ALLOCATION_NOBJECTS); + if (obj) { + dev->n_obj++; - if (dev->freeObjects) { - tn = dev->freeObjects; - dev->freeObjects = - (yaffs_Object *) (dev->freeObjects->siblings.next); - dev->nFreeObjects--; - } -#endif - if (tn) { /* Now sweeten it up... */ - memset(tn, 0, sizeof(yaffs_Object)); - tn->beingCreated = 1; + memset(obj, 0, sizeof(yaffs_obj_t)); + obj->being_created = 1; - tn->myDev = dev; - tn->hdrChunk = 0; - tn->variantType = YAFFS_OBJECT_TYPE_UNKNOWN; - YINIT_LIST_HEAD(&(tn->hardLinks)); - YINIT_LIST_HEAD(&(tn->hashLink)); - YINIT_LIST_HEAD(&tn->siblings); + obj->my_dev = dev; + obj->hdr_chunk = 0; + obj->variant_type = YAFFS_OBJECT_TYPE_UNKNOWN; + YINIT_LIST_HEAD(&(obj->hard_links)); + YINIT_LIST_HEAD(&(obj->hash_link)); + YINIT_LIST_HEAD(&obj->siblings); /* Now make the directory sane */ - if (dev->rootDir) { - tn->parent = dev->rootDir; - ylist_add(&(tn->siblings), &dev->rootDir->variant.directoryVariant.children); + if (dev->root_dir) { + obj->parent = dev->root_dir; + ylist_add(&(obj->siblings), &dev->root_dir->variant.dir_variant.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->lost_n_found) + yaffs_add_obj_to_dir(dev->lost_n_found, obj); - tn->beingCreated = 0; + obj->being_created = 0; } - dev->nCheckpointBlocksRequired = 0; /* force recalculation*/ + dev->checkpoint_blocks_required = 0; /* force recalculation*/ - return tn; + return obj; } -static yaffs_Object *yaffs_CreateFakeDirectory(yaffs_Device *dev, int number, +static yaffs_obj_t *yaffs_create_fake_dir(yaffs_dev_t *dev, int number, __u32 mode) { - yaffs_Object *obj = - yaffs_CreateNewObject(dev, number, YAFFS_OBJECT_TYPE_DIRECTORY); + yaffs_obj_t *obj = + yaffs_new_obj(dev, number, YAFFS_OBJECT_TYPE_DIRECTORY); if (obj) { 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->rename_allowed = 0; /* ... and we're not allowed to rename it... */ + obj->unlink_allowed = 0; /* ... or unlink it */ obj->deleted = 0; obj->unlinked = 0; obj->yst_mode = mode; - obj->myDev = dev; - obj->hdrChunk = 0; /* Not a valid chunk. */ + obj->my_dev = dev; + obj->hdr_chunk = 0; /* Not a valid chunk. */ } return obj; } -static void yaffs_UnhashObject(yaffs_Object *tn) +static void yaffs_unhash_obj(yaffs_obj_t *obj) { int bucket; - yaffs_Device *dev = tn->myDev; + yaffs_dev_t *dev = obj->my_dev; /* If it is still linked into the bucket list, free from the list */ - if (!ylist_empty(&tn->hashLink)) { - ylist_del_init(&tn->hashLink); - bucket = yaffs_HashFunction(tn->objectId); - dev->objectBucket[bucket].count--; + if (!ylist_empty(&obj->hash_link)) { + ylist_del_init(&obj->hash_link); + bucket = yaffs_hash_fn(obj->obj_id); + dev->obj_bucket[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_free_obj(yaffs_obj_t *obj) { - yaffs_Device *dev = tn->myDev; + yaffs_dev_t *dev = obj->my_dev; -#ifdef __KERNEL__ - T(YAFFS_TRACE_OS, (TSTR("FreeObject %p inode %p"TENDSTR), tn, tn->myInode)); -#endif + T(YAFFS_TRACE_OS, (TSTR("FreeObject %p inode %p"TENDSTR), obj, obj->my_inode)); - if (tn->parent) + if (!obj) + YBUG(); + if (obj->parent) YBUG(); - if (!ylist_empty(&tn->siblings)) + if (!ylist_empty(&obj->siblings)) YBUG(); -#ifdef __KERNEL__ - if (tn->myInode) { + if (obj->my_inode) { /* We're still hooked up to a cached inode. * Don't delete now, but mark for later deletion */ - tn->deferedFree = 1; + obj->defered_free = 1; return; } -#endif - - yaffs_UnhashObject(tn); - -#ifdef VALGRIND_TEST - YFREE(tn); -#else - /* Link into the free list. */ - tn->siblings.next = (struct ylist_head *)(dev->freeObjects); - dev->freeObjects = tn; - dev->nFreeObjects++; -#endif - dev->nCheckpointBlocksRequired = 0; /* force recalculation*/ -} -#ifdef __KERNEL__ + yaffs_unhash_obj(obj); -void yaffs_HandleDeferedFree(yaffs_Object *obj) -{ - if (obj->deferedFree) - yaffs_FreeObject(obj); + yaffs_free_raw_obj(dev,obj); + dev->n_obj--; + dev->checkpoint_blocks_required = 0; /* force recalculation*/ } -#endif -static void yaffs_DeinitialiseObjects(yaffs_Device *dev) +void yaffs_handle_defered_free(yaffs_obj_t *obj) { - /* 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; + if (obj->defered_free) + yaffs_free_obj(obj); } -static void yaffs_InitialiseObjects(yaffs_Device *dev) +static void yaffs_init_tnodes_and_objs(yaffs_dev_t *dev) { int i; - dev->allocatedObjectList = NULL; - dev->freeObjects = NULL; - dev->nFreeObjects = 0; + dev->n_obj = 0; + dev->n_tnodes = 0; + + yaffs_init_raw_tnodes_and_objs(dev); for (i = 0; i < YAFFS_NOBJECT_BUCKETS; i++) { - YINIT_LIST_HEAD(&dev->objectBucket[i].list); - dev->objectBucket[i].count = 0; + YINIT_LIST_HEAD(&dev->obj_bucket[i].list); + dev->obj_bucket[i].count = 0; } } -static int yaffs_FindNiceObjectBucket(yaffs_Device *dev) +static int yaffs_find_nice_bucket(yaffs_dev_t *dev) { - static int x; 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->bucket_finder++; + dev->bucket_finder %= YAFFS_NOBJECT_BUCKETS; + if (dev->obj_bucket[dev->bucket_finder].count < lowest) { + lowest = dev->obj_bucket[dev->bucket_finder].count; + l = dev->bucket_finder; } } @@ -2089,9 +1371,9 @@ static int yaffs_FindNiceObjectBucket(yaffs_Device *dev) return l; } -static int yaffs_CreateNewObjectNumber(yaffs_Device *dev) +static int yaffs_new_obj_id(yaffs_dev_t *dev) { - int bucket = yaffs_FindNiceObjectBucket(dev); + int bucket = yaffs_find_nice_bucket(dev); /* Now find an object value that has not already been taken * by scanning the list. @@ -2102,16 +1384,16 @@ static int yaffs_CreateNewObjectNumber(yaffs_Device *dev) __u32 n = (__u32) bucket; - /* yaffs_CheckObjectHashSanity(); */ + /* yaffs_check_obj_hash_sane(); */ while (!found) { found = 1; n += YAFFS_NOBJECT_BUCKETS; - if (1 || dev->objectBucket[bucket].count > 0) { - ylist_for_each(i, &dev->objectBucket[bucket].list) { + if (1 || dev->obj_bucket[bucket].count > 0) { + ylist_for_each(i, &dev->obj_bucket[bucket].list) { /* If there is already one in the list */ - if (i && ylist_entry(i, yaffs_Object, - hashLink)->objectId == n) { + if (i && ylist_entry(i, yaffs_obj_t, + hash_link)->obj_id == n) { found = 0; } } @@ -2121,31 +1403,30 @@ static int yaffs_CreateNewObjectNumber(yaffs_Device *dev) return n; } -static void yaffs_HashObject(yaffs_Object *in) +static void yaffs_hash_obj(yaffs_obj_t *in) { - int bucket = yaffs_HashFunction(in->objectId); - yaffs_Device *dev = in->myDev; + int bucket = yaffs_hash_fn(in->obj_id); + yaffs_dev_t *dev = in->my_dev; - ylist_add(&in->hashLink, &dev->objectBucket[bucket].list); - dev->objectBucket[bucket].count++; + ylist_add(&in->hash_link, &dev->obj_bucket[bucket].list); + dev->obj_bucket[bucket].count++; } -yaffs_Object *yaffs_FindObjectByNumber(yaffs_Device *dev, __u32 number) +yaffs_obj_t *yaffs_find_by_number(yaffs_dev_t *dev, __u32 number) { - int bucket = yaffs_HashFunction(number); + int bucket = yaffs_hash_fn(number); struct ylist_head *i; - yaffs_Object *in; + yaffs_obj_t *in; - ylist_for_each(i, &dev->objectBucket[bucket].list) { + ylist_for_each(i, &dev->obj_bucket[bucket].list) { /* Look if it is in the list */ if (i) { - in = ylist_entry(i, yaffs_Object, hashLink); - if (in->objectId == number) { -#ifdef __KERNEL__ + in = ylist_entry(i, yaffs_obj_t, hash_link); + if (in->obj_id == number) { + /* Don't tell the VFS about this one if it is defered free */ - if (in->deferedFree) + if (in->defered_free) return NULL; -#endif return in; } @@ -2155,36 +1436,38 @@ yaffs_Object *yaffs_FindObjectByNumber(yaffs_Device *dev, __u32 number) return NULL; } -yaffs_Object *yaffs_CreateNewObject(yaffs_Device *dev, int number, - yaffs_ObjectType type) +yaffs_obj_t *yaffs_new_obj(yaffs_dev_t *dev, int number, + yaffs_obj_type type) { - yaffs_Object *theObject; - yaffs_Tnode *tn = NULL; + yaffs_obj_t *theObject=NULL; + yaffs_tnode_t *tn = NULL; if (number < 0) - number = yaffs_CreateNewObjectNumber(dev); - - theObject = yaffs_AllocateEmptyObject(dev); - if (!theObject) - return NULL; + number = yaffs_new_obj_id(dev); if (type == YAFFS_OBJECT_TYPE_FILE) { - tn = yaffs_GetTnode(dev); - if (!tn) { - yaffs_FreeObject(theObject); + tn = yaffs_get_tnode(dev); + if (!tn) return NULL; - } } + theObject = yaffs_alloc_empty_obj(dev); + if (!theObject){ + if(tn) + yaffs_free_tnode(dev,tn); + return NULL; + } + + if (theObject) { theObject->fake = 0; - theObject->renameAllowed = 1; - theObject->unlinkAllowed = 1; - theObject->objectId = number; - yaffs_HashObject(theObject); - theObject->variantType = type; + theObject->rename_allowed = 1; + theObject->unlink_allowed = 1; + theObject->obj_id = number; + yaffs_hash_obj(theObject); + theObject->variant_type = type; #ifdef CONFIG_YAFFS_WINCE - yfsd_WinFileTimeNow(theObject->win_atime); + yfsd_win_file_time_now(theObject->win_atime); theObject->win_ctime[0] = theObject->win_mtime[0] = theObject->win_atime[0]; theObject->win_ctime[1] = theObject->win_mtime[1] = @@ -2197,15 +1480,17 @@ yaffs_Object *yaffs_CreateNewObject(yaffs_Device *dev, int number, #endif switch (type) { case YAFFS_OBJECT_TYPE_FILE: - theObject->variant.fileVariant.fileSize = 0; - theObject->variant.fileVariant.scannedFileSize = 0; - theObject->variant.fileVariant.shrinkSize = 0xFFFFFFFF; /* max __u32 */ - theObject->variant.fileVariant.topLevel = 0; - theObject->variant.fileVariant.top = tn; + theObject->variant.file_variant.file_size = 0; + theObject->variant.file_variant.scanned_size = 0; + theObject->variant.file_variant.shrink_size = 0xFFFFFFFF; /* max __u32 */ + theObject->variant.file_variant.top_level = 0; + theObject->variant.file_variant.top = tn; break; case YAFFS_OBJECT_TYPE_DIRECTORY: - YINIT_LIST_HEAD(&theObject->variant.directoryVariant. + YINIT_LIST_HEAD(&theObject->variant.dir_variant. children); + YINIT_LIST_HEAD(&theObject->variant.dir_variant. + dirty); break; case YAFFS_OBJECT_TYPE_SYMLINK: case YAFFS_OBJECT_TYPE_HARDLINK: @@ -2221,86 +1506,93 @@ yaffs_Object *yaffs_CreateNewObject(yaffs_Device *dev, int number, return theObject; } -static yaffs_Object *yaffs_FindOrCreateObjectByNumber(yaffs_Device *dev, - int number, - yaffs_ObjectType type) +yaffs_obj_t *yaffs_find_or_create_by_number(yaffs_dev_t *dev, + int number, + yaffs_obj_type type) { - yaffs_Object *theObject = NULL; + yaffs_obj_t *theObject = NULL; if (number > 0) - theObject = yaffs_FindObjectByNumber(dev, number); + theObject = yaffs_find_by_number(dev, number); if (!theObject) - theObject = yaffs_CreateNewObject(dev, number, type); + theObject = yaffs_new_obj(dev, number, type); return theObject; } -static YCHAR *yaffs_CloneString(const YCHAR *str) +YCHAR *yaffs_clone_str(const YCHAR *str) { YCHAR *newStr = NULL; + int len; - if (str && *str) { - newStr = YMALLOC((yaffs_strlen(str) + 1) * sizeof(YCHAR)); - if (newStr) - 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. + * equiv_obj only has meaning for a hard link; + * 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, +static yaffs_obj_t *yaffs_create_obj(yaffs_obj_type type, + yaffs_obj_t *parent, const YCHAR *name, __u32 mode, __u32 uid, __u32 gid, - yaffs_Object *equivalentObject, + yaffs_obj_t *equiv_obj, const YCHAR *aliasString, __u32 rdev) { - yaffs_Object *in; + yaffs_obj_t *in; YCHAR *str = NULL; - yaffs_Device *dev = parent->myDev; + yaffs_dev_t *dev = parent->my_dev; /* 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_find_by_name(parent, name)) return NULL; - in = yaffs_CreateNewObject(dev, -1, type); - - if (!in) - return YAFFS_FAIL; - if (type == YAFFS_OBJECT_TYPE_SYMLINK) { - str = yaffs_CloneString(aliasString); - if (!str) { - yaffs_FreeObject(in); + str = yaffs_clone_str(aliasString); + if (!str) return NULL; - } + } + + in = yaffs_new_obj(dev, -1, type); + + if (!in){ + if(str) + YFREE(str); + return NULL; } + + if (in) { - in->hdrChunk = 0; + in->hdr_chunk = 0; in->valid = 1; - in->variantType = type; + in->variant_type = type; in->yst_mode = mode; #ifdef CONFIG_YAFFS_WINCE - yfsd_WinFileTimeNow(in->win_atime); + yfsd_win_file_time_now(in->win_atime); in->win_ctime[0] = in->win_mtime[0] = in->win_atime[0]; in->win_ctime[1] = in->win_mtime[1] = in->win_atime[1]; @@ -2311,25 +1603,25 @@ static yaffs_Object *yaffs_MknodObject(yaffs_ObjectType type, in->yst_uid = uid; in->yst_gid = gid; #endif - in->nDataChunks = 0; + in->n_data_chunks = 0; - yaffs_SetObjectName(in, name); + yaffs_set_obj_name(in, name); in->dirty = 1; - yaffs_AddObjectToDirectory(parent, in); + yaffs_add_obj_to_dir(parent, in); - in->myDev = parent->myDev; + in->my_dev = parent->my_dev; switch (type) { case YAFFS_OBJECT_TYPE_SYMLINK: - in->variant.symLinkVariant.alias = str; + in->variant.symlink_variant.alias = str; break; case YAFFS_OBJECT_TYPE_HARDLINK: - in->variant.hardLinkVariant.equivalentObject = - equivalentObject; - in->variant.hardLinkVariant.equivalentObjectId = - equivalentObject->objectId; - ylist_add(&in->hardLinks, &equivalentObject->hardLinks); + in->variant.hardlink_variant.equiv_obj = + equiv_obj; + in->variant.hardlink_variant.equiv_id = + equiv_obj->obj_id; + ylist_add(&in->hard_links, &equiv_obj->hard_links); break; case YAFFS_OBJECT_TYPE_FILE: case YAFFS_OBJECT_TYPE_DIRECTORY: @@ -2339,92 +1631,93 @@ static yaffs_Object *yaffs_MknodObject(yaffs_ObjectType type, break; } - if (yaffs_UpdateObjectHeader(in, name, 0, 0, 0) < 0) { + if (yaffs_update_oh(in, name, 0, 0, 0, NULL) < 0) { /* Could not create the object header, fail the creation */ - yaffs_DeleteObject(in); + yaffs_del_obj(in); in = NULL; } + yaffs_update_parent(parent); } return in; } -yaffs_Object *yaffs_MknodFile(yaffs_Object *parent, const YCHAR *name, +yaffs_obj_t *yaffs_create_file(yaffs_obj_t *parent, const YCHAR *name, __u32 mode, __u32 uid, __u32 gid) { - return yaffs_MknodObject(YAFFS_OBJECT_TYPE_FILE, parent, name, mode, + return yaffs_create_obj(YAFFS_OBJECT_TYPE_FILE, parent, name, mode, uid, gid, NULL, NULL, 0); } -yaffs_Object *yaffs_MknodDirectory(yaffs_Object *parent, const YCHAR *name, +yaffs_obj_t *yaffs_create_dir(yaffs_obj_t *parent, const YCHAR *name, __u32 mode, __u32 uid, __u32 gid) { - return yaffs_MknodObject(YAFFS_OBJECT_TYPE_DIRECTORY, parent, name, + return yaffs_create_obj(YAFFS_OBJECT_TYPE_DIRECTORY, parent, name, mode, uid, gid, NULL, NULL, 0); } -yaffs_Object *yaffs_MknodSpecial(yaffs_Object *parent, const YCHAR *name, +yaffs_obj_t *yaffs_create_special(yaffs_obj_t *parent, const YCHAR *name, __u32 mode, __u32 uid, __u32 gid, __u32 rdev) { - return yaffs_MknodObject(YAFFS_OBJECT_TYPE_SPECIAL, parent, name, mode, + return yaffs_create_obj(YAFFS_OBJECT_TYPE_SPECIAL, parent, name, mode, uid, gid, NULL, NULL, rdev); } -yaffs_Object *yaffs_MknodSymLink(yaffs_Object *parent, const YCHAR *name, +yaffs_obj_t *yaffs_create_symlink(yaffs_obj_t *parent, const YCHAR *name, __u32 mode, __u32 uid, __u32 gid, const YCHAR *alias) { - return yaffs_MknodObject(YAFFS_OBJECT_TYPE_SYMLINK, parent, name, mode, + return yaffs_create_obj(YAFFS_OBJECT_TYPE_SYMLINK, parent, name, mode, 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_link_obj returns the object id of the equivalent object.*/ +yaffs_obj_t *yaffs_link_obj(yaffs_obj_t *parent, const YCHAR *name, + yaffs_obj_t *equiv_obj) { /* Get the real object in case we were fed a hard link as an equivalent object */ - equivalentObject = yaffs_GetEquivalentObject(equivalentObject); + equiv_obj = yaffs_get_equivalent_obj(equiv_obj); - if (yaffs_MknodObject + if (yaffs_create_obj (YAFFS_OBJECT_TYPE_HARDLINK, parent, name, 0, 0, 0, - equivalentObject, NULL, 0)) { - return equivalentObject; + equiv_obj, NULL, 0)) { + return equiv_obj; } else { return NULL; } } -static int yaffs_ChangeObjectName(yaffs_Object *obj, yaffs_Object *newDir, - const YCHAR *newName, int force, int shadows) +static int yaffs_change_obj_name(yaffs_obj_t *obj, yaffs_obj_t *new_dir, + const YCHAR *new_name, int force, int shadows) { int unlinkOp; int deleteOp; - yaffs_Object *existingTarget; + yaffs_obj_t *existingTarget; - if (newDir == NULL) - newDir = obj->parent; /* use the old directory */ + if (new_dir == NULL) + new_dir = obj->parent; /* use the old directory */ - if (newDir->variantType != YAFFS_OBJECT_TYPE_DIRECTORY) { + if (new_dir->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) { T(YAFFS_TRACE_ALWAYS, (TSTR - ("tragedy: yaffs_ChangeObjectName: newDir is not a directory" + ("tragedy: yaffs_change_obj_name: new_dir is not a directory" TENDSTR))); YBUG(); } /* TODO: Do we need this different handling for YAFFS2 and YAFFS1?? */ - if (obj->myDev->isYaffs2) - unlinkOp = (newDir == obj->myDev->unlinkedDir); + if (obj->my_dev->param.is_yaffs2) + unlinkOp = (new_dir == obj->my_dev->unlinked_dir); else - unlinkOp = (newDir == obj->myDev->unlinkedDir - && obj->variantType == YAFFS_OBJECT_TYPE_FILE); + unlinkOp = (new_dir == obj->my_dev->unlinked_dir + && obj->variant_type == YAFFS_OBJECT_TYPE_FILE); - deleteOp = (newDir == obj->myDev->deletedDir); + deleteOp = (new_dir == obj->my_dev->del_dir); - existingTarget = yaffs_FindObjectByName(newDir, newName); + existingTarget = yaffs_find_by_name(new_dir, new_name); /* 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. @@ -2436,276 +1729,152 @@ static int yaffs_ChangeObjectName(yaffs_Object *obj, yaffs_Object *newDir, force || (shadows > 0) || !existingTarget) && - newDir->variantType == YAFFS_OBJECT_TYPE_DIRECTORY) { - yaffs_SetObjectName(obj, newName); + new_dir->variant_type == YAFFS_OBJECT_TYPE_DIRECTORY) { + yaffs_set_obj_name(obj, new_name); obj->dirty = 1; - yaffs_AddObjectToDirectory(newDir, obj); + yaffs_add_obj_to_dir(new_dir, obj); 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_update_oh(obj, new_name, 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_rename_obj(yaffs_obj_t *old_dir, const YCHAR *old_name, + yaffs_obj_t *new_dir, const YCHAR *new_name) { - yaffs_Object *obj = NULL; - yaffs_Object *existingTarget = NULL; + yaffs_obj_t *obj = NULL; + yaffs_obj_t *existingTarget = NULL; int force = 0; + int result; + yaffs_dev_t *dev; - if (!oldDir || oldDir->variantType != YAFFS_OBJECT_TYPE_DIRECTORY) + if (!old_dir || old_dir->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) YBUG(); - if (!newDir || newDir->variantType != YAFFS_OBJECT_TYPE_DIRECTORY) + if (!new_dir || new_dir->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) YBUG(); + dev = old_dir->my_dev; + #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 (old_dir == new_dir && yaffs_strcmp(old_name, new_name) == 0) force = 1; #endif - else if (yaffs_strlen(newName) > YAFFS_MAX_NAME_LENGTH) + if(yaffs_strnlen(new_name,YAFFS_MAX_NAME_LENGTH+1) > YAFFS_MAX_NAME_LENGTH) /* ENAMETOOLONG */ return YAFFS_FAIL; - obj = yaffs_FindObjectByName(oldDir, oldName); + obj = yaffs_find_by_name(old_dir, old_name); - if (obj && obj->renameAllowed) { + if (obj && obj->rename_allowed) { /* Now do the handling for an existing target, if there is one */ - existingTarget = yaffs_FindObjectByName(newDir, newName); + existingTarget = yaffs_find_by_name(new_dir, new_name); if (existingTarget && - existingTarget->variantType == YAFFS_OBJECT_TYPE_DIRECTORY && - !ylist_empty(&existingTarget->variant.directoryVariant.children)) { + existingTarget->variant_type == YAFFS_OBJECT_TYPE_DIRECTORY && + !ylist_empty(&existingTarget->variant.dir_variant.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 + * but only if it isn't the same object. + * + * Note we must disable gc otherwise it can mess up the shadowing. + * */ - yaffs_ChangeObjectName(obj, newDir, newName, force, - existingTarget->objectId); - yaffs_UnlinkObject(existingTarget); + dev->gc_disable=1; + yaffs_change_obj_name(obj, new_dir, new_name, force, + existingTarget->obj_id); + existingTarget->is_shadowed = 1; + yaffs_unlink_obj(existingTarget); + dev->gc_disable=0; } - return yaffs_ChangeObjectName(obj, newDir, newName, 1, 0); + result = yaffs_change_obj_name(obj, new_dir, new_name, 1, 0); + + yaffs_update_parent(old_dir); + if(new_dir != old_dir) + yaffs_update_parent(new_dir); + + return result; } return YAFFS_FAIL; } /*------------------------- Block Management and Page Allocation ----------------*/ -static int yaffs_InitialiseBlocks(yaffs_Device *dev) +static int yaffs_init_blocks(yaffs_dev_t *dev) { - int nBlocks = dev->internalEndBlock - dev->internalStartBlock + 1; + int nBlocks = dev->internal_end_block - dev->internal_start_block + 1; - dev->blockInfo = NULL; - dev->chunkBits = NULL; + dev->block_info = NULL; + dev->chunk_bits = NULL; - dev->allocationBlock = -1; /* force it to get a new one */ + dev->alloc_block = -1; /* force it to get a new one */ /* If the first allocation strategy fails, thry the alternate one */ - dev->blockInfo = YMALLOC(nBlocks * sizeof(yaffs_BlockInfo)); - if (!dev->blockInfo) { - dev->blockInfo = YMALLOC_ALT(nBlocks * sizeof(yaffs_BlockInfo)); - dev->blockInfoAlt = 1; + dev->block_info = YMALLOC(nBlocks * sizeof(yaffs_block_info_t)); + if (!dev->block_info) { + dev->block_info = YMALLOC_ALT(nBlocks * sizeof(yaffs_block_info_t)); + dev->block_info_alt = 1; } else - dev->blockInfoAlt = 0; + dev->block_info_alt = 0; - if (dev->blockInfo) { + if (dev->block_info) { /* 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; + dev->chunk_bit_stride = (dev->param.chunks_per_block + 7) / 8; /* round up bytes */ + dev->chunk_bits = YMALLOC(dev->chunk_bit_stride * nBlocks); + if (!dev->chunk_bits) { + dev->chunk_bits = YMALLOC_ALT(dev->chunk_bit_stride * nBlocks); + dev->chunk_bits_alt = 1; } else - dev->chunkBitsAlt = 0; + dev->chunk_bits_alt = 0; } - if (dev->blockInfo && dev->chunkBits) { - memset(dev->blockInfo, 0, nBlocks * sizeof(yaffs_BlockInfo)); - memset(dev->chunkBits, 0, dev->chunkBitmapStride * nBlocks); + if (dev->block_info && dev->chunk_bits) { + memset(dev->block_info, 0, nBlocks * sizeof(yaffs_block_info_t)); + memset(dev->chunk_bits, 0, dev->chunk_bit_stride * nBlocks); return YAFFS_OK; } return YAFFS_FAIL; } -static void yaffs_DeinitialiseBlocks(yaffs_Device *dev) +static void yaffs_deinit_blocks(yaffs_dev_t *dev) { - if (dev->blockInfoAlt && dev->blockInfo) - YFREE_ALT(dev->blockInfo); - else if (dev->blockInfo) - YFREE(dev->blockInfo); + if (dev->block_info_alt && dev->block_info) + YFREE_ALT(dev->block_info); + else if (dev->block_info) + YFREE(dev->block_info); - dev->blockInfoAlt = 0; + dev->block_info_alt = 0; - dev->blockInfo = NULL; + dev->block_info = NULL; - if (dev->chunkBitsAlt && dev->chunkBits) - YFREE_ALT(dev->chunkBits); - else if (dev->chunkBits) - YFREE(dev->chunkBits); - dev->chunkBitsAlt = 0; - dev->chunkBits = NULL; + if (dev->chunk_bits_alt && dev->chunk_bits) + YFREE_ALT(dev->chunk_bits); + else if (dev->chunk_bits) + YFREE(dev->chunk_bits); + dev->chunk_bits_alt = 0; + dev->chunk_bits = NULL; } -static int yaffs_BlockNotDisqualifiedFromGC(yaffs_Device *dev, - yaffs_BlockInfo *bi) -{ - int i; - __u32 seq; - yaffs_BlockInfo *b; - - if (!dev->isYaffs2) - return 1; /* disqualification only applies to yaffs2. */ - - if (!bi->hasShrinkHeader) - return 1; /* can gc */ - - /* 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 (!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); -} - -/* FindDiretiestBlock is used to select the dirtiest block (or close enough) - * for garbage collection. - */ - -static int yaffs_FindBlockForGarbageCollection(yaffs_Device *dev, - int aggressive) +void yaffs_block_became_dirty(yaffs_dev_t *dev, int block_no) { - int b = dev->currentDirtyChecker; - - int i; - int iterations; - int dirtiest = -1; - int pagesInUse = 0; - int prioritised = 0; - yaffs_BlockInfo *bi; - 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); - /* yaffs_VerifyBlock(dev,bi,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 (!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. - */ - - dev->nonAggressiveSkip--; - - if (!aggressive && (dev->nonAggressiveSkip > 0)) - return -1; - - if (!prioritised) - pagesInUse = - (aggressive) ? dev->nChunksPerBlock : YAFFS_PASSIVE_GC_CHUNKS + 1; - - if (aggressive) - iterations = - dev->internalEndBlock - dev->internalStartBlock + 1; - else { - iterations = - dev->internalEndBlock - dev->internalStartBlock + 1; - iterations = iterations / 16; - if (iterations > 200) - iterations = 200; - } - - for (i = 0; i <= iterations && pagesInUse > 0 && !prioritised; i++) { - b++; - if (b < dev->internalStartBlock || b > dev->internalEndBlock) - b = dev->internalStartBlock; - - 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 (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) - dev->nonAggressiveSkip = 4; - - return dirtiest; -} - -static void yaffs_BlockBecameDirty(yaffs_Device *dev, int blockNo) -{ - yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, blockNo); + yaffs_block_info_t *bi = yaffs_get_block_info(dev, block_no); int erasedOk = 0; @@ -2714,64 +1883,77 @@ static void yaffs_BlockBecameDirty(yaffs_Device *dev, int blockNo) */ T(YAFFS_TRACE_GC | YAFFS_TRACE_ERASE, - (TSTR("yaffs_BlockBecameDirty block %d state %d %s"TENDSTR), - blockNo, bi->blockState, (bi->needsRetiring) ? "needs retiring" : "")); + (TSTR("yaffs_block_became_dirty block %d state %d %s"TENDSTR), + block_no, bi->block_state, (bi->needs_retiring) ? "needs retiring" : "")); - bi->blockState = YAFFS_BLOCK_STATE_DIRTY; + yaffs2_clear_oldest_dirty_seq(dev,bi); - if (!bi->needsRetiring) { - yaffs_InvalidateCheckpoint(dev); - erasedOk = yaffs_EraseBlockInNAND(dev, blockNo); + bi->block_state = YAFFS_BLOCK_STATE_DIRTY; + + /* If this is the block being garbage collected then stop gc'ing this block */ + if(block_no == dev->gc_block) + dev->gc_block = 0; + + /* If this block is currently the best candidate for gc then drop as a candidate */ + if(block_no == dev->gc_dirtiest){ + dev->gc_dirtiest = 0; + dev->gc_pages_in_use = 0; + } + + if (!bi->needs_retiring) { + yaffs2_checkpt_invalidate(dev); + erasedOk = yaffs_erase_block(dev, block_no); if (!erasedOk) { - dev->nErasureFailures++; + dev->n_erase_failures++; T(YAFFS_TRACE_ERROR | YAFFS_TRACE_BAD_BLOCKS, - (TSTR("**>> Erasure failed %d" TENDSTR), blockNo)); + (TSTR("**>> Erasure failed %d" TENDSTR), block_no)); } } if (erasedOk && - ((yaffs_traceMask & YAFFS_TRACE_ERASE) || !yaffs_SkipVerification(dev))) { + ((yaffs_trace_mask & YAFFS_TRACE_ERASE) || !yaffs_skip_verification(dev))) { int i; - for (i = 0; i < dev->nChunksPerBlock; i++) { - if (!yaffs_CheckChunkErased - (dev, blockNo * dev->nChunksPerBlock + i)) { + for (i = 0; i < dev->param.chunks_per_block; i++) { + if (!yaffs_check_chunk_erased + (dev, block_no * dev->param.chunks_per_block + i)) { T(YAFFS_TRACE_ERROR, (TSTR (">>Block %d erasure supposedly OK, but chunk %d not erased" - TENDSTR), blockNo, i)); + TENDSTR), block_no, 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); + bi->block_state = YAFFS_BLOCK_STATE_EMPTY; + bi->seq_number = 0; + dev->n_erased_blocks++; + bi->pages_in_use = 0; + bi->soft_del_pages = 0; + bi->has_shrink_hdr = 0; + bi->skip_erased_check = 1; /* This is clean, so no need to check */ + bi->gc_prioritise = 0; + yaffs_clear_chunk_bits(dev, block_no); T(YAFFS_TRACE_ERASE, - (TSTR("Erased block %d" TENDSTR), blockNo)); + (TSTR("Erased block %d" TENDSTR), block_no)); } else { - dev->nFreeChunks -= dev->nChunksPerBlock; /* We lost a block of free space */ + dev->n_free_chunks -= dev->param.chunks_per_block; /* We lost a block of free space */ - yaffs_RetireBlock(dev, blockNo); + yaffs_retire_block(dev, block_no); T(YAFFS_TRACE_ERROR | YAFFS_TRACE_BAD_BLOCKS, - (TSTR("**>> Block %d retired" TENDSTR), blockNo)); + (TSTR("**>> Block %d retired" TENDSTR), block_no)); } } -static int yaffs_FindBlockForAllocation(yaffs_Device *dev) +static int yaffs_find_alloc_block(yaffs_dev_t *dev) { int i; - yaffs_BlockInfo *bi; + yaffs_block_info_t *bi; - if (dev->nErasedBlocks < 1) { + if (dev->n_erased_blocks < 1) { /* Hoosterman we've got a problem. * Can't get space to gc */ @@ -2783,136 +1965,94 @@ static int yaffs_FindBlockForAllocation(yaffs_Device *dev) /* Find an empty block. */ - for (i = dev->internalStartBlock; i <= dev->internalEndBlock; i++) { - dev->allocationBlockFinder++; - if (dev->allocationBlockFinder < dev->internalStartBlock - || dev->allocationBlockFinder > dev->internalEndBlock) { - dev->allocationBlockFinder = dev->internalStartBlock; + for (i = dev->internal_start_block; i <= dev->internal_end_block; i++) { + dev->alloc_block_finder++; + if (dev->alloc_block_finder < dev->internal_start_block + || dev->alloc_block_finder > dev->internal_end_block) { + dev->alloc_block_finder = dev->internal_start_block; } - bi = yaffs_GetBlockInfo(dev, dev->allocationBlockFinder); + bi = yaffs_get_block_info(dev, dev->alloc_block_finder); - if (bi->blockState == YAFFS_BLOCK_STATE_EMPTY) { - bi->blockState = YAFFS_BLOCK_STATE_ALLOCATING; - dev->sequenceNumber++; - bi->sequenceNumber = dev->sequenceNumber; - dev->nErasedBlocks--; + if (bi->block_state == YAFFS_BLOCK_STATE_EMPTY) { + bi->block_state = YAFFS_BLOCK_STATE_ALLOCATING; + dev->seq_number++; + bi->seq_number = dev->seq_number; + dev->n_erased_blocks--; T(YAFFS_TRACE_ALLOCATE, (TSTR("Allocated block %d, seq %d, %d left" TENDSTR), - dev->allocationBlockFinder, dev->sequenceNumber, - dev->nErasedBlocks)); - return dev->allocationBlockFinder; + dev->alloc_block_finder, dev->seq_number, + dev->n_erased_blocks)); + return dev->alloc_block_finder; } } T(YAFFS_TRACE_ALWAYS, (TSTR ("yaffs tragedy: no more erased blocks, but there should have been %d" - TENDSTR), dev->nErasedBlocks)); + TENDSTR), dev->n_erased_blocks)); return -1; } - -static int yaffs_CalcCheckpointBlocksRequired(yaffs_Device *dev) -{ - if (!dev->nCheckpointBlocksRequired && - dev->isYaffs2) { - /* Not a valid value so recalculate */ - int nBytes = 0; - int nBlocks; - int devBlocks = (dev->endBlock - dev->startBlock + 1); - int tnodeSize; - - tnodeSize = (dev->tnodeWidth * YAFFS_NTNODES_LEVEL0)/8; - - if (tnodeSize < sizeof(yaffs_Tnode)) - tnodeSize = sizeof(yaffs_Tnode); - - nBytes += sizeof(yaffs_CheckpointValidity); - nBytes += sizeof(yaffs_CheckpointDevice); - nBytes += devBlocks * sizeof(yaffs_BlockInfo); - nBytes += devBlocks * dev->chunkBitmapStride; - nBytes += (sizeof(yaffs_CheckpointObject) + sizeof(__u32)) * (dev->nObjectsCreated - dev->nFreeObjects); - nBytes += (tnodeSize + sizeof(__u32)) * (dev->nTnodesCreated - dev->nFreeTnodes); - nBytes += sizeof(yaffs_CheckpointValidity); - nBytes += sizeof(__u32); /* checksum*/ - - /* Round up and add 2 blocks to allow for some bad blocks, so add 3 */ - - nBlocks = (nBytes/(dev->nDataBytesPerChunk * dev->nChunksPerBlock)) + 3; - - dev->nCheckpointBlocksRequired = nBlocks; - } - - return dev->nCheckpointBlocksRequired; -} - /* * Check if there's space to allocate... - * Thinks.... do we need top make this ths same as yaffs_GetFreeChunks()? + * Thinks.... do we need top make this ths same as yaffs_get_free_chunks()? */ -static int yaffs_CheckSpaceForAllocation(yaffs_Device *dev) +int yaffs_check_alloc_available(yaffs_dev_t *dev, int n_chunks) { int reservedChunks; - int reservedBlocks = dev->nReservedBlocks; + int reservedBlocks = dev->param.n_reserved_blocks; int checkpointBlocks; - if (dev->isYaffs2) { - checkpointBlocks = yaffs_CalcCheckpointBlocksRequired(dev) - - dev->blocksInCheckpoint; - if (checkpointBlocks < 0) - checkpointBlocks = 0; - } else { - checkpointBlocks = 0; - } + checkpointBlocks = yaffs_calc_checkpt_blocks_required(dev); - reservedChunks = ((reservedBlocks + checkpointBlocks) * dev->nChunksPerBlock); + reservedChunks = ((reservedBlocks + checkpointBlocks) * dev->param.chunks_per_block); - return (dev->nFreeChunks > reservedChunks); + return (dev->n_free_chunks > (reservedChunks + n_chunks)); } -static int yaffs_AllocateChunk(yaffs_Device *dev, int useReserve, - yaffs_BlockInfo **blockUsedPtr) +static int yaffs_alloc_chunk(yaffs_dev_t *dev, int useReserve, + yaffs_block_info_t **blockUsedPtr) { int retVal; - yaffs_BlockInfo *bi; + yaffs_block_info_t *bi; - if (dev->allocationBlock < 0) { + if (dev->alloc_block < 0) { /* Get next block to allocate off */ - dev->allocationBlock = yaffs_FindBlockForAllocation(dev); - dev->allocationPage = 0; + dev->alloc_block = yaffs_find_alloc_block(dev); + dev->alloc_page = 0; } - if (!useReserve && !yaffs_CheckSpaceForAllocation(dev)) { + if (!useReserve && !yaffs_check_alloc_available(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->n_erased_blocks < dev->param.n_reserved_blocks + && dev->alloc_page == 0) { T(YAFFS_TRACE_ALLOCATE, (TSTR("Allocating reserve" TENDSTR))); } /* Next page please.... */ - if (dev->allocationBlock >= 0) { - bi = yaffs_GetBlockInfo(dev, dev->allocationBlock); + if (dev->alloc_block >= 0) { + bi = yaffs_get_block_info(dev, dev->alloc_block); - retVal = (dev->allocationBlock * dev->nChunksPerBlock) + - dev->allocationPage; - bi->pagesInUse++; - yaffs_SetChunkBit(dev, dev->allocationBlock, - dev->allocationPage); + retVal = (dev->alloc_block * dev->param.chunks_per_block) + + dev->alloc_page; + bi->pages_in_use++; + yaffs_set_chunk_bit(dev, dev->alloc_block, + dev->alloc_page); - dev->allocationPage++; + dev->alloc_page++; - dev->nFreeChunks--; + dev->n_free_chunks--; /* If the block is full set the state to full */ - if (dev->allocationPage >= dev->nChunksPerBlock) { - bi->blockState = YAFFS_BLOCK_STATE_FULL; - dev->allocationBlock = -1; + if (dev->alloc_page >= dev->param.chunks_per_block) { + bi->block_state = YAFFS_BLOCK_STATE_FULL; + dev->alloc_block = -1; } if (blockUsedPtr) @@ -2927,120 +2067,132 @@ static int yaffs_AllocateChunk(yaffs_Device *dev, int useReserve, return -1; } -static int yaffs_GetErasedChunks(yaffs_Device *dev) +static int yaffs_get_erased_chunks(yaffs_dev_t *dev) { int n; - n = dev->nErasedBlocks * dev->nChunksPerBlock; + n = dev->n_erased_blocks * dev->param.chunks_per_block; - if (dev->allocationBlock > 0) - n += (dev->nChunksPerBlock - dev->allocationPage); + if (dev->alloc_block > 0) + n += (dev->param.chunks_per_block - dev->alloc_page); return n; } -static int yaffs_GarbageCollectBlock(yaffs_Device *dev, int block, +/* + * yaffs_skip_rest_of_block() skips over the rest of the allocation block + * if we don't want to write to it. + */ +void yaffs_skip_rest_of_block(yaffs_dev_t *dev) +{ + if(dev->alloc_block > 0){ + yaffs_block_info_t *bi = yaffs_get_block_info(dev, dev->alloc_block); + if(bi->block_state == YAFFS_BLOCK_STATE_ALLOCATING){ + bi->block_state = YAFFS_BLOCK_STATE_FULL; + dev->alloc_block = -1; + } + } +} + + +static int yaffs_gc_block(yaffs_dev_t *dev, int block, int wholeBlock) { int oldChunk; int newChunk; - int markNAND; + int mark_flash; int retVal = YAFFS_OK; - int cleanups = 0; int i; int isCheckpointBlock; int matchingChunk; int maxCopies; - int chunksBefore = yaffs_GetErasedChunks(dev); + int chunksBefore = yaffs_get_erased_chunks(dev); int chunksAfter; - yaffs_ExtendedTags tags; + yaffs_ext_tags tags; - yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, block); + yaffs_block_info_t *bi = yaffs_get_block_info(dev, block); - yaffs_Object *object; + yaffs_obj_t *object; - isCheckpointBlock = (bi->blockState == YAFFS_BLOCK_STATE_CHECKPOINT); + isCheckpointBlock = (bi->block_state == YAFFS_BLOCK_STATE_CHECKPOINT); - bi->blockState = YAFFS_BLOCK_STATE_COLLECTING; T(YAFFS_TRACE_TRACING, (TSTR("Collecting block %d, in use %d, shrink %d, wholeBlock %d" TENDSTR), block, - bi->pagesInUse, - bi->hasShrinkHeader, + bi->pages_in_use, + bi->has_shrink_hdr, wholeBlock)); - /*yaffs_VerifyFreeChunks(dev); */ - - bi->hasShrinkHeader = 0; /* clear the flag so that the block can erase */ + /*yaffs_verify_free_chunks(dev); */ - /* Take off the number of soft deleted entries because - * they're going to get really deleted during GC. - */ - dev->nFreeChunks -= bi->softDeletions; + if(bi->block_state == YAFFS_BLOCK_STATE_FULL) + bi->block_state = YAFFS_BLOCK_STATE_COLLECTING; + + bi->has_shrink_hdr = 0; /* clear the flag so that the block can erase */ - dev->isDoingGC = 1; + dev->gc_disable = 1; if (isCheckpointBlock || - !yaffs_StillSomeChunkBits(dev, block)) { + !yaffs_still_some_chunks(dev, block)) { T(YAFFS_TRACE_TRACING, (TSTR ("Collecting block %d that has no chunks in use" TENDSTR), block)); - yaffs_BlockBecameDirty(dev, block); + yaffs_block_became_dirty(dev, block); } else { - __u8 *buffer = yaffs_GetTempBuffer(dev, __LINE__); + __u8 *buffer = yaffs_get_temp_buffer(dev, __LINE__); - yaffs_VerifyBlock(dev, bi, block); + yaffs_verify_blk(dev, bi, block); - maxCopies = (wholeBlock) ? dev->nChunksPerBlock : 10; - oldChunk = block * dev->nChunksPerBlock + dev->gcChunk; + maxCopies = (wholeBlock) ? dev->param.chunks_per_block : 5; + oldChunk = block * dev->param.chunks_per_block + dev->gc_chunk; for (/* init already done */; retVal == YAFFS_OK && - dev->gcChunk < dev->nChunksPerBlock && - (bi->blockState == YAFFS_BLOCK_STATE_COLLECTING) && + dev->gc_chunk < dev->param.chunks_per_block && + (bi->block_state == YAFFS_BLOCK_STATE_COLLECTING) && maxCopies > 0; - dev->gcChunk++, oldChunk++) { - if (yaffs_CheckChunkBit(dev, block, dev->gcChunk)) { + dev->gc_chunk++, oldChunk++) { + if (yaffs_check_chunk_bit(dev, block, dev->gc_chunk)) { /* This page is in use and might need to be copied off */ maxCopies--; - markNAND = 1; + mark_flash = 1; - yaffs_InitialiseTags(&tags); + yaffs_init_tags(&tags); - yaffs_ReadChunkWithTagsFromNAND(dev, oldChunk, + yaffs_rd_chunk_tags_nand(dev, oldChunk, buffer, &tags); object = - yaffs_FindObjectByNumber(dev, - tags.objectId); + yaffs_find_by_number(dev, + tags.obj_id); T(YAFFS_TRACE_GC_DETAIL, (TSTR ("Collecting chunk in block %d, %d %d %d " TENDSTR), - dev->gcChunk, tags.objectId, tags.chunkId, - tags.byteCount)); + dev->gc_chunk, tags.obj_id, tags.chunk_id, + tags.n_bytes)); - if (object && !yaffs_SkipVerification(dev)) { - if (tags.chunkId == 0) - matchingChunk = object->hdrChunk; - else if (object->softDeleted) + if (object && !yaffs_skip_verification(dev)) { + if (tags.chunk_id == 0) + matchingChunk = object->hdr_chunk; + else if (object->soft_del) matchingChunk = oldChunk; /* Defeat the test */ else - matchingChunk = yaffs_FindChunkInFile(object, tags.chunkId, NULL); + matchingChunk = yaffs_find_chunk_in_file(object, tags.chunk_id, 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)); + oldChunk, matchingChunk, tags.obj_id, tags.chunk_id)); } @@ -3049,39 +2201,47 @@ static int yaffs_GarbageCollectBlock(yaffs_Device *dev, int block, (TSTR ("page %d in gc has no object: %d %d %d " TENDSTR), oldChunk, - tags.objectId, tags.chunkId, tags.byteCount)); + tags.obj_id, tags.chunk_id, tags.n_bytes)); } if (object && object->deleted && - object->softDeleted && - tags.chunkId != 0) { + object->soft_del && + tags.chunk_id != 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 * 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->n_free_chunks--; + bi->soft_del_pages--; - object->nDataChunks--; + object->n_data_chunks--; - if (object->nDataChunks <= 0) { + if (object->n_data_chunks <= 0) { /* remeber to clean up the object */ - dev->gcCleanupList[cleanups] = - tags.objectId; - cleanups++; + dev->gc_cleanup_list[dev->n_clean_ups] = + tags.obj_id; + dev->n_clean_ups++; } - markNAND = 0; + mark_flash = 0; } else if (0) { - /* Todo object && object->deleted && object->nDataChunks == 0 */ + /* Todo object && object->deleted && object->n_data_chunks == 0 */ /* Deleted object header with no data chunks. * Can be discarded and the file deleted. */ - object->hdrChunk = 0; - yaffs_FreeTnode(object->myDev, + object->hdr_chunk = 0; + yaffs_free_tnode(object->my_dev, object->variant. - fileVariant.top); - object->variant.fileVariant.top = NULL; - yaffs_DoGenericObjectDeletion(object); + file_variant.top); + object->variant.file_variant.top = NULL; + yaffs_generic_obj_del(object); } else if (object) { /* It's either a data chunk in a live file or @@ -3089,27 +2249,40 @@ static int yaffs_GarbageCollectBlock(yaffs_Device *dev, int block, * NB Need to keep the ObjectHeaders of deleted files * until the whole file has been deleted off */ - tags.serialNumber++; + tags.serial_number++; - dev->nGCCopies++; + dev->n_gc_copies++; - if (tags.chunkId == 0) { + if (tags.chunk_id == 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. */ - yaffs_ObjectHeader *oh; - oh = (yaffs_ObjectHeader *)buffer; - oh->isShrink = 0; - tags.extraIsShrinkHeader = 0; + yaffs_obj_header *oh; + oh = (yaffs_obj_header *)buffer; - yaffs_VerifyObjectHeader(object, oh, &tags, 1); - } + oh->is_shrink = 0; + tags.extra_is_shrink = 0; + + oh->shadows_obj = 0; + oh->inband_shadowed_obj_id = 0; + tags.extra_shadows = 0; - newChunk = - yaffs_WriteNewChunkWithTagsToNAND(dev, buffer, &tags, 1); + /* Update file size */ + if(object->variant_type == YAFFS_OBJECT_TYPE_FILE){ + oh->file_size = object->variant.file_variant.file_size; + tags.extra_length = oh->file_size; + } + + yaffs_verify_oh(object, oh, &tags, 1); + newChunk = + yaffs_write_new_chunk(dev,(__u8 *) oh, &tags, 1); + } else + newChunk = + yaffs_write_new_chunk(dev, buffer, &tags, 1); if (newChunk < 0) { retVal = YAFFS_FAIL; @@ -3117,71 +2290,243 @@ static int yaffs_GarbageCollectBlock(yaffs_Device *dev, int block, /* Ok, now fix up the Tnodes etc. */ - if (tags.chunkId == 0) { + if (tags.chunk_id == 0) { /* It's a header */ - object->hdrChunk = newChunk; - object->serial = tags.serialNumber; + object->hdr_chunk = newChunk; + object->serial = tags.serial_number; } else { /* It's a data chunk */ - yaffs_PutChunkIntoFile + int ok; + ok = yaffs_put_chunk_in_file (object, - tags.chunkId, + tags.chunk_id, newChunk, 0); } } } if (retVal == YAFFS_OK) - yaffs_DeleteChunk(dev, oldChunk, markNAND, __LINE__); + yaffs_chunk_del(dev, oldChunk, mark_flash, __LINE__); } } - yaffs_ReleaseTempBuffer(dev, buffer, __LINE__); + yaffs_release_temp_buffer(dev, buffer, __LINE__); + + } + + yaffs_verify_collected_blk(dev, bi, block); + + + + if (bi->block_state == YAFFS_BLOCK_STATE_COLLECTING) { + /* + * The gc did not complete. Set block state back to FULL + * because checkpointing does not restore gc. + */ + bi->block_state = YAFFS_BLOCK_STATE_FULL; + } else { + /* The gc completed. */ /* Do any required cleanups */ - for (i = 0; i < cleanups; i++) { + for (i = 0; i < dev->n_clean_ups; i++) { /* Time to delete the file too */ object = - yaffs_FindObjectByNumber(dev, - dev->gcCleanupList[i]); + yaffs_find_by_number(dev, + dev->gc_cleanup_list[i]); if (object) { - yaffs_FreeTnode(dev, - object->variant.fileVariant. + yaffs_free_tnode(dev, + object->variant.file_variant. top); - object->variant.fileVariant.top = NULL; + object->variant.file_variant.top = NULL; T(YAFFS_TRACE_GC, (TSTR ("yaffs: About to finally delete object %d" - TENDSTR), object->objectId)); - yaffs_DoGenericObjectDeletion(object); - object->myDev->nDeletedFiles--; + TENDSTR), object->obj_id)); + yaffs_generic_obj_del(object); + object->my_dev->n_deleted_files--; } } + + chunksAfter = yaffs_get_erased_chunks(dev); + if (chunksBefore >= chunksAfter) { + T(YAFFS_TRACE_GC, + (TSTR + ("gc did not increase free chunks before %d after %d" + TENDSTR), chunksBefore, chunksAfter)); + } + dev->gc_block = 0; + dev->gc_chunk = 0; + dev->n_clean_ups = 0; } - yaffs_VerifyCollectedBlock(dev, bi, block); + dev->gc_disable = 0; - 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)); + return retVal; +} + +/* + * FindBlockForgarbageCollection is used to select the dirtiest block (or close enough) + * for garbage collection. + */ + +static unsigned yaffs_find_gc_block(yaffs_dev_t *dev, + int aggressive, + int background) +{ + int i; + int iterations; + unsigned selected = 0; + int prioritised = 0; + int prioritisedExists = 0; + yaffs_block_info_t *bi; + int threshold; + + /* First let's see if we need to grab a prioritised block */ + if (dev->has_pending_prioritised_gc && !aggressive) { + dev->gc_dirtiest = 0; + bi = dev->block_info; + for (i = dev->internal_start_block; + i <= dev->internal_end_block && !selected; + i++) { + + if (bi->gc_prioritise) { + prioritisedExists = 1; + if (bi->block_state == YAFFS_BLOCK_STATE_FULL && + yaffs_block_ok_for_gc(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->oldest_dirty_block > 0) + selected = dev->oldest_dirty_block; + + if (!prioritisedExists) /* None found, so we can clear this */ + dev->has_pending_prioritised_gc = 0; } - /* If the gc completed then clear the current gcBlock so that we find another. */ - if (bi->blockState != YAFFS_BLOCK_STATE_COLLECTING) { - dev->gcBlock = -1; - dev->gcChunk = 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. + */ + + if (!selected){ + int pagesUsed; + int nBlocks = dev->internal_end_block - dev->internal_start_block + 1; + if (aggressive){ + threshold = dev->param.chunks_per_block; + iterations = nBlocks; + } else { + int maxThreshold; + + if(background) + maxThreshold = dev->param.chunks_per_block/2; + else + maxThreshold = dev->param.chunks_per_block/8; + + if(maxThreshold < YAFFS_GC_PASSIVE_THRESHOLD) + maxThreshold = YAFFS_GC_PASSIVE_THRESHOLD; + + threshold = background ? + (dev->gc_not_done + 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->gc_dirtiest < 1 || + dev->gc_pages_in_use > YAFFS_GC_GOOD_ENOUGH); + i++) { + dev->gc_block_finder++; + if (dev->gc_block_finder < dev->internal_start_block || + dev->gc_block_finder > dev->internal_end_block) + dev->gc_block_finder = dev->internal_start_block; + + bi = yaffs_get_block_info(dev, dev->gc_block_finder); + + pagesUsed = bi->pages_in_use - bi->soft_del_pages; + + if (bi->block_state == YAFFS_BLOCK_STATE_FULL && + pagesUsed < dev->param.chunks_per_block && + (dev->gc_dirtiest < 1 || pagesUsed < dev->gc_pages_in_use) && + yaffs_block_ok_for_gc(dev, bi)) { + dev->gc_dirtiest = dev->gc_block_finder; + dev->gc_pages_in_use = pagesUsed; + } + } + + if(dev->gc_dirtiest > 0 && dev->gc_pages_in_use <= threshold) + selected = dev->gc_dirtiest; } - dev->isDoingGC = 0; + /* + * If nothing has been selected for a while, try selecting the oldest dirty + * because that's gumming up the works. + */ - return retVal; + if(!selected && dev->param.is_yaffs2 && + dev->gc_not_done >= ( background ? 10 : 20)){ + yaffs2_find_oldest_dirty_seq(dev); + if(dev->oldest_dirty_block > 0) { + selected = dev->oldest_dirty_block; + dev->gc_dirtiest = selected; + dev->oldest_dirty_gc_count++; + bi = yaffs_get_block_info(dev, selected); + dev->gc_pages_in_use = bi->pages_in_use - bi->soft_del_pages; + } else + dev->gc_not_done = 0; + } + + if(selected){ + T(YAFFS_TRACE_GC, + (TSTR("GC Selected block %d with %d free, prioritised:%d" TENDSTR), + selected, + dev->param.chunks_per_block - dev->gc_pages_in_use, + prioritised)); + + dev->n_gc_blocks++; + if(background) + dev->bg_gcs++; + + dev->gc_dirtiest = 0; + dev->gc_pages_in_use = 0; + dev->gc_not_done = 0; + if(dev->refresh_skip > 0) + dev->refresh_skip--; + } else{ + dev->gc_not_done++; + T(YAFFS_TRACE_GC, + (TSTR("GC none: finder %d skip %d threshold %d dirtiest %d using %d oldest %d%s" TENDSTR), + dev->gc_block_finder, dev->gc_not_done, + threshold, + dev->gc_dirtiest, dev->gc_pages_in_use, + dev->oldest_dirty_block, + background ? " bg" : "")); + } + + return selected; } /* New garbage collector @@ -3193,122 +2538,161 @@ static int yaffs_GarbageCollectBlock(yaffs_Device *dev, int block, * 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_check_gc(yaffs_dev_t *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.gc_control && + (dev->param.gc_control(dev) & 1) == 0) + return YAFFS_OK; + + if (dev->gc_disable) { /* 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 = yaffs_CalcCheckpointBlocksRequired(dev) - dev->blocksInCheckpoint; - if (checkpointBlockAdjust < 0) - checkpointBlockAdjust = 0; + checkpointBlockAdjust = yaffs_calc_checkpt_blocks_required(dev); + + minErased = dev->param.n_reserved_blocks + checkpointBlockAdjust + 1; + erasedChunks = dev->n_erased_blocks * dev->param.chunks_per_block; - if (dev->nErasedBlocks < (dev->nReservedBlocks + checkpointBlockAdjust + 2)) { - /* We need a block soon...*/ + /* If we need a block soon then do aggressive gc.*/ + if (dev->n_erased_blocks < minErased) aggressive = 1; - } else { - /* We're in no hurry */ - aggressive = 0; + else { + if(!background && erasedChunks > (dev->n_free_chunks / 4)) + break; + + if(dev->gc_skip > 20) + dev->gc_skip = 20; + if(erasedChunks < dev->n_free_chunks/2 || + dev->gc_skip < 1 || + background) + aggressive = 0; + else { + dev->gc_skip--; + break; + } } - if (dev->gcBlock <= 0) { - dev->gcBlock = yaffs_FindBlockForGarbageCollection(dev, aggressive); - dev->gcChunk = 0; - } + dev->gc_skip = 5; - block = dev->gcBlock; + /* If we don't already have a block being gc'd then see if we should start another */ + + if (dev->gc_block < 1 && !aggressive) { + dev->gc_block = yaffs2_find_refresh_block(dev); + dev->gc_chunk = 0; + dev->n_clean_ups=0; + } + if (dev->gc_block < 1) { + dev->gc_block = yaffs_find_gc_block(dev, aggressive, background); + dev->gc_chunk = 0; + dev->n_clean_ups=0; + } - if (block > 0) { - dev->garbageCollections++; + if (dev->gc_block > 0) { + dev->all_gcs++; if (!aggressive) - dev->passiveGarbageCollections++; + dev->passive_gc_count++; T(YAFFS_TRACE_GC, (TSTR ("yaffs: GC erasedBlocks %d aggressive %d" TENDSTR), - dev->nErasedBlocks, aggressive)); + dev->n_erased_blocks, aggressive)); - gcOk = yaffs_GarbageCollectBlock(dev, block, aggressive); + gcOk = yaffs_gc_block(dev, dev->gc_block, aggressive); } - if (dev->nErasedBlocks < (dev->nReservedBlocks) && block > 0) { + if (dev->n_erased_blocks < (dev->param.n_reserved_blocks) && dev->gc_block > 0) { T(YAFFS_TRACE_GC, (TSTR ("yaffs: GC !!!no reclaim!!! erasedBlocks %d after try %d block %d" - TENDSTR), dev->nErasedBlocks, maxTries, block)); + TENDSTR), dev->n_erased_blocks, maxTries, dev->gc_block)); } - } while ((dev->nErasedBlocks < dev->nReservedBlocks) && - (block > 0) && + } while ((dev->n_erased_blocks < dev->param.n_reserved_blocks) && + (dev->gc_block > 0) && (maxTries < 2)); return aggressive ? gcOk : YAFFS_OK; } +/* + * yaffs_bg_gc() + * Garbage collects. Intended to be called from a background thread. + * Returns non-zero if at least half the free chunks are erased. + */ +int yaffs_bg_gc(yaffs_dev_t *dev, unsigned urgency) +{ + int erasedChunks = dev->n_erased_blocks * dev->param.chunks_per_block; + + T(YAFFS_TRACE_BACKGROUND, (TSTR("Background gc %u" TENDSTR),urgency)); + + yaffs_check_gc(dev, 1); + return erasedChunks > dev->n_free_chunks/2; +} + /*------------------------- TAGS --------------------------------*/ -static int yaffs_TagsMatch(const yaffs_ExtendedTags *tags, int objectId, +static int yaffs_tags_match(const yaffs_ext_tags *tags, int obj_id, int chunkInObject) { - return (tags->chunkId == chunkInObject && - tags->objectId == objectId && !tags->chunkDeleted) ? 1 : 0; + return (tags->chunk_id == chunkInObject && + tags->obj_id == obj_id && !tags->is_deleted) ? 1 : 0; } /*-------------------- Data file manipulation -----------------*/ -static int yaffs_FindChunkInFile(yaffs_Object *in, int chunkInInode, - yaffs_ExtendedTags *tags) +static int yaffs_find_chunk_in_file(yaffs_obj_t *in, int inode_chunk, + yaffs_ext_tags *tags) { /*Get the Tnode, then get the level 0 offset chunk offset */ - yaffs_Tnode *tn; + yaffs_tnode_t *tn; int theChunk = -1; - yaffs_ExtendedTags localTags; + yaffs_ext_tags localTags; int retVal = -1; - yaffs_Device *dev = in->myDev; + yaffs_dev_t *dev = in->my_dev; if (!tags) { /* Passed a NULL, so use our own tags space */ tags = &localTags; } - tn = yaffs_FindLevel0Tnode(dev, &in->variant.fileVariant, chunkInInode); + tn = yaffs_find_tnode_0(dev, &in->variant.file_variant, inode_chunk); if (tn) { - theChunk = yaffs_GetChunkGroupBase(dev, tn, chunkInInode); + theChunk = yaffs_get_group_base(dev, tn, inode_chunk); retVal = - yaffs_FindChunkInGroup(dev, theChunk, tags, in->objectId, - chunkInInode); + yaffs_find_chunk_in_group(dev, theChunk, tags, in->obj_id, + inode_chunk); } return retVal; } -static int yaffs_FindAndDeleteChunkInFile(yaffs_Object *in, int chunkInInode, - yaffs_ExtendedTags *tags) +static int yaffs_find_del_file_chunk(yaffs_obj_t *in, int inode_chunk, + yaffs_ext_tags *tags) { /* Get the Tnode, then get the level 0 offset chunk offset */ - yaffs_Tnode *tn; + yaffs_tnode_t *tn; int theChunk = -1; - yaffs_ExtendedTags localTags; + yaffs_ext_tags localTags; - yaffs_Device *dev = in->myDev; + yaffs_dev_t *dev = in->my_dev; int retVal = -1; if (!tags) { @@ -3316,102 +2700,47 @@ static int yaffs_FindAndDeleteChunkInFile(yaffs_Object *in, int chunkInInode, tags = &localTags; } - tn = yaffs_FindLevel0Tnode(dev, &in->variant.fileVariant, chunkInInode); + tn = yaffs_find_tnode_0(dev, &in->variant.file_variant, inode_chunk); if (tn) { - theChunk = yaffs_GetChunkGroupBase(dev, tn, chunkInInode); + theChunk = yaffs_get_group_base(dev, tn, inode_chunk); retVal = - yaffs_FindChunkInGroup(dev, theChunk, tags, in->objectId, - chunkInInode); + yaffs_find_chunk_in_group(dev, theChunk, tags, in->obj_id, + inode_chunk); /* Delete the entry in the filestructure (if found) */ if (retVal != -1) - yaffs_PutLevel0Tnode(dev, tn, chunkInInode, 0); + yaffs_load_tnode_0(dev, tn, inode_chunk, 0); } return retVal; } -#ifdef YAFFS_PARANOID -static int yaffs_CheckFileSanity(yaffs_Object *in) +int yaffs_put_chunk_in_file(yaffs_obj_t *in, int inode_chunk, + int nand_chunk, int in_scan) { - 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) - 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) -{ - /* NB inScan is zero unless scanning. - * For forward scanning, inScan is > 0; - * for backward scanning inScan is < 0 + /* NB in_scan is zero unless scanning. + * For forward scanning, in_scan is > 0; + * for backward scanning in_scan is < 0 + * + * nand_chunk = 0 is a dummy insert to make sure the tnodes are there. */ - yaffs_Tnode *tn; - yaffs_Device *dev = in->myDev; + yaffs_tnode_t *tn; + yaffs_dev_t *dev = in->my_dev; int existingChunk; - yaffs_ExtendedTags existingTags; - yaffs_ExtendedTags newTags; + yaffs_ext_tags existingTags; + yaffs_ext_tags newTags; unsigned existingSerial, newSerial; - if (in->variantType != YAFFS_OBJECT_TYPE_FILE) { + if (in->variant_type != YAFFS_OBJECT_TYPE_FILE) { /* Just ignore an attempt at putting a chunk into a non-file during scanning * If it is not during Scanning then something went wrong! */ - if (!inScan) { + if (!in_scan) { T(YAFFS_TRACE_ERROR, (TSTR ("yaffs tragedy:attempt to put data chunk into a non-file" @@ -3419,20 +2748,24 @@ static int yaffs_PutChunkIntoFile(yaffs_Object *in, int chunkInInode, YBUG(); } - yaffs_DeleteChunk(dev, chunkInNAND, 1, __LINE__); + yaffs_chunk_del(dev, nand_chunk, 1, __LINE__); return YAFFS_OK; } - tn = yaffs_AddOrFindLevel0Tnode(dev, - &in->variant.fileVariant, - chunkInInode, + tn = yaffs_add_find_tnode_0(dev, + &in->variant.file_variant, + inode_chunk, NULL); if (!tn) return YAFFS_FAIL; + + if(!nand_chunk) + /* Dummy insert, bail now */ + return YAFFS_OK; - existingChunk = yaffs_GetChunkGroupBase(dev, tn, chunkInInode); + existingChunk = yaffs_get_group_base(dev, tn, inode_chunk); - if (inScan != 0) { + if (in_scan != 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 * happen when the power fails during a write, then only one @@ -3443,7 +2776,7 @@ static int yaffs_PutChunkIntoFile(yaffs_Object *in, int chunkInInode, */ if (existingChunk > 0) { - /* NB Right now existing chunk will not be real chunkId if the device >= 32MB + /* NB Right now existing chunk will not be real chunk_id 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: @@ -3453,15 +2786,15 @@ static int yaffs_PutChunkIntoFile(yaffs_Object *in, int chunkInInode, * YAFFS1: Get both sets of tags and compare serial numbers. */ - if (inScan > 0) { + if (in_scan > 0) { /* Only do this for forward scanning */ - yaffs_ReadChunkWithTagsFromNAND(dev, - chunkInNAND, + yaffs_rd_chunk_tags_nand(dev, + nand_chunk, NULL, &newTags); /* Do a proper find */ existingChunk = - yaffs_FindChunkInFile(in, chunkInInode, + yaffs_find_chunk_in_file(in, inode_chunk, &existingTags); } @@ -3479,27 +2812,26 @@ static int yaffs_PutChunkIntoFile(yaffs_Object *in, int chunkInInode, * not be loaded during a scan */ - if (inScan > 0) { - newSerial = newTags.serialNumber; - existingSerial = existingTags.serialNumber; + if (in_scan > 0) { + newSerial = newTags.serial_number; + existingSerial = existingTags.serial_number; } - if ((inScan > 0) && - (in->myDev->isYaffs2 || - existingChunk <= 0 || + if ((in_scan > 0) && + (existingChunk <= 0 || ((existingSerial + 1) & 3) == newSerial)) { /* Forward scanning. * Use new * Delete the old one and drop through to update the tnode */ - yaffs_DeleteChunk(dev, existingChunk, 1, + yaffs_chunk_del(dev, existingChunk, 1, __LINE__); } else { /* Backward scanning or we want to use the existing one * Use existing. * Delete the new one and return early so that the tnode isn't changed */ - yaffs_DeleteChunk(dev, chunkInNAND, 1, + yaffs_chunk_del(dev, nand_chunk, 1, __LINE__); return YAFFS_OK; } @@ -3508,96 +2840,98 @@ static int yaffs_PutChunkIntoFile(yaffs_Object *in, int chunkInInode, } if (existingChunk == 0) - in->nDataChunks++; + in->n_data_chunks++; - yaffs_PutLevel0Tnode(dev, tn, chunkInInode, chunkInNAND); + yaffs_load_tnode_0(dev, tn, inode_chunk, nand_chunk); return YAFFS_OK; } -static int yaffs_ReadChunkDataFromObject(yaffs_Object *in, int chunkInInode, +static int yaffs_rd_data_obj(yaffs_obj_t *in, int inode_chunk, __u8 *buffer) { - int chunkInNAND = yaffs_FindChunkInFile(in, chunkInInode, NULL); + int nand_chunk = yaffs_find_chunk_in_file(in, inode_chunk, NULL); - if (chunkInNAND >= 0) - return yaffs_ReadChunkWithTagsFromNAND(in->myDev, chunkInNAND, + if (nand_chunk >= 0) + return yaffs_rd_chunk_tags_nand(in->my_dev, nand_chunk, buffer, NULL); else { T(YAFFS_TRACE_NANDACCESS, (TSTR("Chunk %d not found zero instead" TENDSTR), - chunkInNAND)); + nand_chunk)); /* get sane (zero) data if you read a hole */ - memset(buffer, 0, in->myDev->nDataBytesPerChunk); + memset(buffer, 0, in->my_dev->data_bytes_per_chunk); return 0; } } -void yaffs_DeleteChunk(yaffs_Device *dev, int chunkId, int markNAND, int lyn) +void yaffs_chunk_del(yaffs_dev_t *dev, int chunk_id, int mark_flash, int lyn) { int block; int page; - yaffs_ExtendedTags tags; - yaffs_BlockInfo *bi; + yaffs_ext_tags tags; + yaffs_block_info_t *bi; - if (chunkId <= 0) + if (chunk_id <= 0) return; - dev->nDeletions++; - block = chunkId / dev->nChunksPerBlock; - page = chunkId % dev->nChunksPerBlock; + dev->n_deletions++; + block = chunk_id / dev->param.chunks_per_block; + page = chunk_id % dev->param.chunks_per_block; - if (!yaffs_CheckChunkBit(dev, block, page)) + if (!yaffs_check_chunk_bit(dev, block, page)) T(YAFFS_TRACE_VERIFY, (TSTR("Deleting invalid chunk %d"TENDSTR), - chunkId)); + chunk_id)); - bi = yaffs_GetBlockInfo(dev, block); + bi = yaffs_get_block_info(dev, block); + + yaffs2_update_oldest_dirty_seq(dev, block, bi); T(YAFFS_TRACE_DELETION, - (TSTR("line %d delete of chunk %d" TENDSTR), lyn, chunkId)); + (TSTR("line %d delete of chunk %d" TENDSTR), lyn, chunk_id)); - if (markNAND && - bi->blockState != YAFFS_BLOCK_STATE_COLLECTING && !dev->isYaffs2) { + if (!dev->param.is_yaffs2 && mark_flash && + bi->block_state != YAFFS_BLOCK_STATE_COLLECTING) { - yaffs_InitialiseTags(&tags); + yaffs_init_tags(&tags); - tags.chunkDeleted = 1; + tags.is_deleted = 1; - yaffs_WriteChunkWithTagsToNAND(dev, chunkId, NULL, &tags); - yaffs_HandleUpdateChunk(dev, chunkId, &tags); + yaffs_wr_chunk_tags_nand(dev, chunk_id, NULL, &tags); + yaffs_handle_chunk_update(dev, chunk_id, &tags); } else { - dev->nUnmarkedDeletions++; + dev->n_unmarked_deletions++; } /* Pull out of the management area. * If the whole block became dirty, this will kick off an erasure. */ - if (bi->blockState == YAFFS_BLOCK_STATE_ALLOCATING || - bi->blockState == YAFFS_BLOCK_STATE_FULL || - bi->blockState == YAFFS_BLOCK_STATE_NEEDS_SCANNING || - bi->blockState == YAFFS_BLOCK_STATE_COLLECTING) { - dev->nFreeChunks++; + if (bi->block_state == YAFFS_BLOCK_STATE_ALLOCATING || + bi->block_state == YAFFS_BLOCK_STATE_FULL || + bi->block_state == YAFFS_BLOCK_STATE_NEEDS_SCANNING || + bi->block_state == YAFFS_BLOCK_STATE_COLLECTING) { + dev->n_free_chunks++; - yaffs_ClearChunkBit(dev, block, page); + yaffs_clear_chunk_bit(dev, block, page); - bi->pagesInUse--; + bi->pages_in_use--; - if (bi->pagesInUse == 0 && - !bi->hasShrinkHeader && - bi->blockState != YAFFS_BLOCK_STATE_ALLOCATING && - bi->blockState != YAFFS_BLOCK_STATE_NEEDS_SCANNING) { - yaffs_BlockBecameDirty(dev, block); + if (bi->pages_in_use == 0 && + !bi->has_shrink_hdr && + bi->block_state != YAFFS_BLOCK_STATE_ALLOCATING && + bi->block_state != YAFFS_BLOCK_STATE_NEEDS_SCANNING) { + yaffs_block_became_dirty(dev, block); } } } -static int yaffs_WriteChunkDataToObject(yaffs_Object *in, int chunkInInode, - const __u8 *buffer, int nBytes, +static int yaffs_wr_data_obj(yaffs_obj_t *in, int inode_chunk, + const __u8 *buffer, int n_bytes, int useReserve) { /* Find old chunk Need to do this to get serial number @@ -3606,44 +2940,51 @@ static int yaffs_WriteChunkDataToObject(yaffs_Object *in, int chunkInInode, */ int prevChunkId; - yaffs_ExtendedTags prevTags; + yaffs_ext_tags prevTags; int newChunkId; - yaffs_ExtendedTags newTags; + yaffs_ext_tags newTags; - yaffs_Device *dev = in->myDev; + yaffs_dev_t *dev = in->my_dev; - yaffs_CheckGarbageCollection(dev); + yaffs_check_gc(dev,0); - /* Get the previous chunk at this location in the file if it exists */ - prevChunkId = yaffs_FindChunkInFile(in, chunkInInode, &prevTags); + /* 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_find_chunk_in_file(in, inode_chunk, &prevTags); + if(prevChunkId < 1 && + !yaffs_put_chunk_in_file(in, inode_chunk, 0, 0)) + return 0; /* Set up new tags */ - yaffs_InitialiseTags(&newTags); + yaffs_init_tags(&newTags); - newTags.chunkId = chunkInInode; - newTags.objectId = in->objectId; - newTags.serialNumber = - (prevChunkId >= 0) ? prevTags.serialNumber + 1 : 1; - newTags.byteCount = nBytes; + newTags.chunk_id = inode_chunk; + newTags.obj_id = in->obj_id; + newTags.serial_number = + (prevChunkId > 0) ? prevTags.serial_number + 1 : 1; + newTags.n_bytes = n_bytes; - if (nBytes < 1 || nBytes > dev->totalBytesPerChunk) { + if (n_bytes < 1 || n_bytes > dev->param.total_bytes_per_chunk) { T(YAFFS_TRACE_ERROR, - (TSTR("Writing %d bytes to chunk!!!!!!!!!" TENDSTR), nBytes)); + (TSTR("Writing %d bytes to chunk!!!!!!!!!" TENDSTR), n_bytes)); YBUG(); } - + + newChunkId = - yaffs_WriteNewChunkWithTagsToNAND(dev, buffer, &newTags, + yaffs_write_new_chunk(dev, buffer, &newTags, useReserve); - if (newChunkId >= 0) { - yaffs_PutChunkIntoFile(in, chunkInInode, newChunkId, 0); + if (newChunkId > 0) { + yaffs_put_chunk_in_file(in, inode_chunk, newChunkId, 0); - if (prevChunkId >= 0) - yaffs_DeleteChunk(dev, prevChunkId, 1, __LINE__); + if (prevChunkId > 0) + yaffs_chunk_del(dev, prevChunkId, 1, __LINE__); - yaffs_CheckFileSanity(in); + yaffs_verify_file_sane(in); } return newChunkId; @@ -3652,56 +2993,57 @@ static int yaffs_WriteChunkDataToObject(yaffs_Object *in, int chunkInInode, /* 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_update_oh(yaffs_obj_t *in, const YCHAR *name, int force, + int is_shrink, int shadows, yaffs_xattr_mod *xmod) { - yaffs_BlockInfo *bi; + yaffs_block_info_t *bi; - yaffs_Device *dev = in->myDev; + yaffs_dev_t *dev = in->my_dev; int prevChunkId; int retVal = 0; int result = 0; int newChunkId; - yaffs_ExtendedTags newTags; - yaffs_ExtendedTags oldTags; + yaffs_ext_tags newTags; + yaffs_ext_tags oldTags; + const YCHAR *alias = NULL; __u8 *buffer = NULL; - YCHAR oldName[YAFFS_MAX_NAME_LENGTH + 1]; + YCHAR old_name[YAFFS_MAX_NAME_LENGTH + 1]; - yaffs_ObjectHeader *oh = NULL; + yaffs_obj_header *oh = NULL; - yaffs_strcpy(oldName, _Y("silly old name")); + yaffs_strcpy(old_name, _Y("silly old name")); if (!in->fake || - in == dev->rootDir || /* The rootDir should also be saved */ - force) { + in == dev->root_dir || /* The root_dir should also be saved */ + force || xmod) { - yaffs_CheckGarbageCollection(dev); - yaffs_CheckObjectDetailsLoaded(in); + yaffs_check_gc(dev,0); + yaffs_check_obj_details_loaded(in); - buffer = yaffs_GetTempBuffer(in->myDev, __LINE__); - oh = (yaffs_ObjectHeader *) buffer; + buffer = yaffs_get_temp_buffer(in->my_dev, __LINE__); + oh = (yaffs_obj_header *) buffer; - prevChunkId = in->hdrChunk; + prevChunkId = in->hdr_chunk; if (prevChunkId > 0) { - result = yaffs_ReadChunkWithTagsFromNAND(dev, prevChunkId, + result = yaffs_rd_chunk_tags_nand(dev, prevChunkId, buffer, &oldTags); - yaffs_VerifyObjectHeader(in, oh, &oldTags, 0); - - memcpy(oldName, oh->name, sizeof(oh->name)); - } + yaffs_verify_oh(in, oh, &oldTags, 0); - memset(buffer, 0xFF, dev->nDataBytesPerChunk); + memcpy(old_name, oh->name, sizeof(oh->name)); + memset(buffer, 0xFF, sizeof(yaffs_obj_header)); + } else + memset(buffer, 0xFF, dev->data_bytes_per_chunk); - oh->type = in->variantType; + oh->type = in->variant_type; oh->yst_mode = in->yst_mode; - oh->shadowsObject = oh->inbandShadowsObject = shadows; + oh->shadows_obj = oh->inband_shadowed_obj_id = shadows; #ifdef CONFIG_YAFFS_WINCE oh->win_atime[0] = in->win_atime[0]; @@ -3719,34 +3061,34 @@ int yaffs_UpdateObjectHeader(yaffs_Object *in, const YCHAR *name, int force, oh->yst_rdev = in->yst_rdev; #endif if (in->parent) - oh->parentObjectId = in->parent->objectId; + oh->parent_obj_id = in->parent->obj_id; else - oh->parentObjectId = 0; + oh->parent_obj_id = 0; if (name && *name) { memset(oh->name, 0, sizeof(oh->name)); - yaffs_strncpy(oh->name, name, YAFFS_MAX_NAME_LENGTH); - } else if (prevChunkId >= 0) - memcpy(oh->name, oldName, sizeof(oh->name)); + yaffs_load_oh_from_name(dev,oh->name,name); + } else if (prevChunkId > 0) + memcpy(oh->name, old_name, sizeof(oh->name)); else memset(oh->name, 0, sizeof(oh->name)); - oh->isShrink = isShrink; + oh->is_shrink = is_shrink; - switch (in->variantType) { + switch (in->variant_type) { case YAFFS_OBJECT_TYPE_UNKNOWN: /* Should not happen */ break; case YAFFS_OBJECT_TYPE_FILE: - oh->fileSize = - (oh->parentObjectId == YAFFS_OBJECTID_DELETED - || oh->parentObjectId == + oh->file_size = + (oh->parent_obj_id == YAFFS_OBJECTID_DELETED + || oh->parent_obj_id == YAFFS_OBJECTID_UNLINKED) ? 0 : in->variant. - fileVariant.fileSize; + file_variant.file_size; break; case YAFFS_OBJECT_TYPE_HARDLINK: - oh->equivalentObjectId = - in->variant.hardLinkVariant.equivalentObjectId; + oh->equiv_id = + in->variant.hardlink_variant.equiv_id; break; case YAFFS_OBJECT_TYPE_SPECIAL: /* Do nothing */ @@ -3755,54 +3097,62 @@ int yaffs_UpdateObjectHeader(yaffs_Object *in, const YCHAR *name, int force, /* Do nothing */ break; case YAFFS_OBJECT_TYPE_SYMLINK: + alias = in->variant.symlink_variant.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_apply_xattrib_mod(in, (char *)buffer, xmod); + + /* Tags */ - yaffs_InitialiseTags(&newTags); + yaffs_init_tags(&newTags); in->serial++; - newTags.chunkId = 0; - newTags.objectId = in->objectId; - newTags.serialNumber = in->serial; + newTags.chunk_id = 0; + newTags.obj_id = in->obj_id; + newTags.serial_number = in->serial; /* Add extra info for file header */ - newTags.extraHeaderInfoAvailable = 1; - newTags.extraParentObjectId = oh->parentObjectId; - newTags.extraFileLength = oh->fileSize; - newTags.extraIsShrinkHeader = oh->isShrink; - newTags.extraEquivalentObjectId = oh->equivalentObjectId; - newTags.extraShadows = (oh->shadowsObject > 0) ? 1 : 0; - newTags.extraObjectType = in->variantType; + newTags.extra_available = 1; + newTags.extra_parent_id = oh->parent_obj_id; + newTags.extra_length = oh->file_size; + newTags.extra_is_shrink = oh->is_shrink; + newTags.extra_equiv_id = oh->equiv_id; + newTags.extra_shadows = (oh->shadows_obj > 0) ? 1 : 0; + newTags.extra_obj_type = in->variant_type; - yaffs_VerifyObjectHeader(in, oh, &newTags, 1); + yaffs_verify_oh(in, oh, &newTags, 1); /* Create new chunk in NAND */ newChunkId = - yaffs_WriteNewChunkWithTagsToNAND(dev, buffer, &newTags, - (prevChunkId >= 0) ? 1 : 0); + yaffs_write_new_chunk(dev, buffer, &newTags, + (prevChunkId > 0) ? 1 : 0); if (newChunkId >= 0) { - in->hdrChunk = newChunkId; + in->hdr_chunk = newChunkId; - if (prevChunkId >= 0) { - yaffs_DeleteChunk(dev, prevChunkId, 1, + if (prevChunkId > 0) { + yaffs_chunk_del(dev, prevChunkId, 1, __LINE__); } - if (!yaffs_ObjectHasCachedWriteData(in)) + if (!yaffs_obj_cache_dirty(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); - bi->hasShrinkHeader = 1; + if (is_shrink) { + bi = yaffs_get_block_info(in->my_dev, + newChunkId / in->my_dev->param.chunks_per_block); + bi->has_shrink_hdr = 1; } } @@ -3812,7 +3162,7 @@ int yaffs_UpdateObjectHeader(yaffs_Object *in, const YCHAR *name, int force, } if (buffer) - yaffs_ReleaseTempBuffer(dev, buffer, __LINE__); + yaffs_release_temp_buffer(dev, buffer, __LINE__); return retVal; } @@ -3830,15 +3180,15 @@ int yaffs_UpdateObjectHeader(yaffs_Object *in, const YCHAR *name, int force, * need a very intelligent search. */ -static int yaffs_ObjectHasCachedWriteData(yaffs_Object *obj) +static int yaffs_obj_cache_dirty(yaffs_obj_t *obj) { - yaffs_Device *dev = obj->myDev; + yaffs_dev_t *dev = obj->my_dev; int i; - yaffs_ChunkCache *cache; - int nCaches = obj->myDev->nShortOpCaches; + yaffs_cache_t *cache; + int nCaches = obj->my_dev->param.n_caches; for (i = 0; i < nCaches; i++) { - cache = &dev->srCache[i]; + cache = &dev->cache[i]; if (cache->object == obj && cache->dirty) return 1; @@ -3848,14 +3198,14 @@ static int yaffs_ObjectHasCachedWriteData(yaffs_Object *obj) } -static void yaffs_FlushFilesChunkCache(yaffs_Object *obj) +static void yaffs_flush_file_cache(yaffs_obj_t *obj) { - yaffs_Device *dev = obj->myDev; + yaffs_dev_t *dev = obj->my_dev; int lowest = -99; /* Stop compiler whining. */ int i; - yaffs_ChunkCache *cache; + yaffs_cache_t *cache; int chunkWritten = 0; - int nCaches = obj->myDev->nShortOpCaches; + int nCaches = obj->my_dev->param.n_caches; if (nCaches > 0) { do { @@ -3863,13 +3213,13 @@ static void yaffs_FlushFilesChunkCache(yaffs_Object *obj) /* Find the dirty cache for this object with the lowest chunk id. */ for (i = 0; i < nCaches; i++) { - if (dev->srCache[i].object == obj && - dev->srCache[i].dirty) { + if (dev->cache[i].object == obj && + dev->cache[i].dirty) { if (!cache - || dev->srCache[i].chunkId < + || dev->cache[i].chunk_id < lowest) { - cache = &dev->srCache[i]; - lowest = cache->chunkId; + cache = &dev->cache[i]; + lowest = cache->chunk_id; } } } @@ -3878,10 +3228,10 @@ static void yaffs_FlushFilesChunkCache(yaffs_Object *obj) /* Write it out and free it up */ chunkWritten = - yaffs_WriteChunkDataToObject(cache->object, - cache->chunkId, + yaffs_wr_data_obj(cache->object, + cache->chunk_id, cache->data, - cache->nBytes, + cache->n_bytes, 1); cache->dirty = 0; cache->object = NULL; @@ -3899,15 +3249,15 @@ static void yaffs_FlushFilesChunkCache(yaffs_Object *obj) } -/*yaffs_FlushEntireDeviceCache(dev) +/*yaffs_flush_whole_cache(dev) * * */ -void yaffs_FlushEntireDeviceCache(yaffs_Device *dev) +void yaffs_flush_whole_cache(yaffs_dev_t *dev) { - yaffs_Object *obj; - int nCaches = dev->nShortOpCaches; + yaffs_obj_t *obj; + int nCaches = dev->param.n_caches; int i; /* Find a dirty object in the cache and flush it... @@ -3916,13 +3266,13 @@ void yaffs_FlushEntireDeviceCache(yaffs_Device *dev) do { obj = NULL; for (i = 0; i < nCaches && !obj; i++) { - if (dev->srCache[i].object && - dev->srCache[i].dirty) - obj = dev->srCache[i].object; + if (dev->cache[i].object && + dev->cache[i].dirty) + obj = dev->cache[i].object; } if (obj) - yaffs_FlushFilesChunkCache(obj); + yaffs_flush_file_cache(obj); } while (obj); @@ -3934,32 +3284,32 @@ void yaffs_FlushEntireDeviceCache(yaffs_Device *dev) * 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_cache_t *yaffs_grab_chunk_worker(yaffs_dev_t *dev) { int i; - if (dev->nShortOpCaches > 0) { - for (i = 0; i < dev->nShortOpCaches; i++) { - if (!dev->srCache[i].object) - return &dev->srCache[i]; + if (dev->param.n_caches > 0) { + for (i = 0; i < dev->param.n_caches; i++) { + if (!dev->cache[i].object) + return &dev->cache[i]; } } return NULL; } -static yaffs_ChunkCache *yaffs_GrabChunkCache(yaffs_Device *dev) +static yaffs_cache_t *yaffs_grab_chunk_cache(yaffs_dev_t *dev) { - yaffs_ChunkCache *cache; - yaffs_Object *theObj; + yaffs_cache_t *cache; + yaffs_obj_t *theObj; int usage; int i; int pushout; - if (dev->nShortOpCaches > 0) { + if (dev->param.n_caches > 0) { /* Try find a non-dirty one... */ - cache = yaffs_GrabChunkCacheWorker(dev); + cache = yaffs_grab_chunk_worker(dev); if (!cache) { /* They were all dirty, find the last recently used object and flush @@ -3975,21 +3325,21 @@ static yaffs_ChunkCache *yaffs_GrabChunkCache(yaffs_Device *dev) cache = NULL; pushout = -1; - for (i = 0; i < dev->nShortOpCaches; i++) { - if (dev->srCache[i].object && - !dev->srCache[i].locked && - (dev->srCache[i].lastUse < usage || !cache)) { - usage = dev->srCache[i].lastUse; - theObj = dev->srCache[i].object; - cache = &dev->srCache[i]; + for (i = 0; i < dev->param.n_caches; i++) { + if (dev->cache[i].object && + !dev->cache[i].locked && + (dev->cache[i].last_use < usage || !cache)) { + usage = dev->cache[i].last_use; + theObj = dev->cache[i].object; + cache = &dev->cache[i]; pushout = i; } } if (!cache || cache->dirty) { /* Flush and try again */ - yaffs_FlushFilesChunkCache(theObj); - cache = yaffs_GrabChunkCacheWorker(dev); + yaffs_flush_file_cache(theObj); + cache = yaffs_grab_chunk_worker(dev); } } @@ -4000,18 +3350,18 @@ static yaffs_ChunkCache *yaffs_GrabChunkCache(yaffs_Device *dev) } /* Find a cached chunk */ -static yaffs_ChunkCache *yaffs_FindChunkCache(const yaffs_Object *obj, - int chunkId) +static yaffs_cache_t *yaffs_find_chunk_cache(const yaffs_obj_t *obj, + int chunk_id) { - yaffs_Device *dev = obj->myDev; + yaffs_dev_t *dev = obj->my_dev; int i; - if (dev->nShortOpCaches > 0) { - for (i = 0; i < dev->nShortOpCaches; i++) { - if (dev->srCache[i].object == obj && - dev->srCache[i].chunkId == chunkId) { - dev->cacheHits++; + if (dev->param.n_caches > 0) { + for (i = 0; i < dev->param.n_caches; i++) { + if (dev->cache[i].object == obj && + dev->cache[i].chunk_id == chunk_id) { + dev->cache_hits++; - return &dev->srCache[i]; + return &dev->cache[i]; } } } @@ -4019,23 +3369,23 @@ static yaffs_ChunkCache *yaffs_FindChunkCache(const yaffs_Object *obj, } /* Mark the chunk for the least recently used algorithym */ -static void yaffs_UseChunkCache(yaffs_Device *dev, yaffs_ChunkCache *cache, +static void yaffs_use_cache(yaffs_dev_t *dev, yaffs_cache_t *cache, int isAWrite) { - if (dev->nShortOpCaches > 0) { - if (dev->srLastUse < 0 || dev->srLastUse > 100000000) { + if (dev->param.n_caches > 0) { + if (dev->cache_last_use < 0 || dev->cache_last_use > 100000000) { /* Reset the cache usages */ int i; - for (i = 1; i < dev->nShortOpCaches; i++) - dev->srCache[i].lastUse = 0; + for (i = 1; i < dev->param.n_caches; i++) + dev->cache[i].last_use = 0; - dev->srLastUse = 0; + dev->cache_last_use = 0; } - dev->srLastUse++; + dev->cache_last_use++; - cache->lastUse = dev->srLastUse; + cache->last_use = dev->cache_last_use; if (isAWrite) cache->dirty = 1; @@ -4046,10 +3396,10 @@ static void yaffs_UseChunkCache(yaffs_Device *dev, yaffs_ChunkCache *cache, * 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_invalidate_chunk_cache(yaffs_obj_t *object, int chunk_id) { - if (object->myDev->nShortOpCaches > 0) { - yaffs_ChunkCache *cache = yaffs_FindChunkCache(object, chunkId); + if (object->my_dev->param.n_caches > 0) { + yaffs_cache_t *cache = yaffs_find_chunk_cache(object, chunk_id); if (cache) cache->object = NULL; @@ -4059,586 +3409,21 @@ static void yaffs_InvalidateChunkCache(yaffs_Object *object, int chunkId) /* 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_invalidate_whole_cache(yaffs_obj_t *in) { int i; - yaffs_Device *dev = in->myDev; + yaffs_dev_t *dev = in->my_dev; - if (dev->nShortOpCaches > 0) { + if (dev->param.n_caches > 0) { /* Invalidate it. */ - for (i = 0; i < dev->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; - - memset(&cp, 0, sizeof(cp)); - - cp.structType = sizeof(cp); - cp.magic = YAFFS_MAGIC; - cp.version = YAFFS_CHECKPOINT_VERSION; - cp.head = (head) ? 1 : 0; - - return (yaffs_CheckpointWrite(dev, &cp, sizeof(cp)) == sizeof(cp)) ? - 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->hdrChunk = obj->hdrChunk; - 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 int yaffs_CheckpointObjectToObject(yaffs_Object *obj, yaffs_CheckpointObject *cp) -{ - - yaffs_Object *parent; - - if (obj->variantType != cp->variantType) { - T(YAFFS_TRACE_ERROR, (TSTR("Checkpoint read object %d type %d " - TCONT("chunk %d does not match existing object type %d") - TENDSTR), cp->objectId, cp->variantType, cp->hdrChunk, - obj->variantType)); - return 0; - } - - obj->objectId = cp->objectId; - - if (cp->parentId) - parent = yaffs_FindOrCreateObjectByNumber( - obj->myDev, - cp->parentId, - YAFFS_OBJECT_TYPE_DIRECTORY); - else - parent = NULL; - - if (parent) { - if (parent->variantType != YAFFS_OBJECT_TYPE_DIRECTORY) { - T(YAFFS_TRACE_ALWAYS, (TSTR("Checkpoint read object %d parent %d type %d" - TCONT(" chunk %d Parent type, %d, not directory") - TENDSTR), - cp->objectId, cp->parentId, cp->variantType, - cp->hdrChunk, parent->variantType)); - return 0; - } - yaffs_AddObjectToDirectory(parent, obj); - } - - obj->hdrChunk = cp->hdrChunk; - 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->hdrChunk > 0) - obj->lazyLoaded = 1; - return 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 tnodeSize = (dev->tnodeWidth * YAFFS_NTNODES_LEVEL0)/8; - - if (tnodeSize < sizeof(yaffs_Tnode)) - tnodeSize = sizeof(yaffs_Tnode); - - - 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; - ok = (yaffs_CheckpointWrite(dev, &baseOffset, sizeof(baseOffset)) == sizeof(baseOffset)); - if (ok) - ok = (yaffs_CheckpointWrite(dev, tn, tnodeSize) == tnodeSize); - } - } - - 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; - int nread = 0; - int tnodeSize = (dev->tnodeWidth * YAFFS_NTNODES_LEVEL0)/8; - - if (tnodeSize < sizeof(yaffs_Tnode)) - tnodeSize = sizeof(yaffs_Tnode); - - ok = (yaffs_CheckpointRead(dev, &baseChunk, sizeof(baseChunk)) == sizeof(baseChunk)); - - while (ok && (~baseChunk)) { - nread++; - /* Read level 0 tnode */ - - - tn = yaffs_GetTnodeRaw(dev); - if (tn) - ok = (yaffs_CheckpointRead(dev, tn, tnodeSize) == tnodeSize); - 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)); - - } - - T(YAFFS_TRACE_CHECKPOINT, ( - TSTR("Checkpoint read tnodes %d records, last %d. ok %d" TENDSTR), - nread, baseChunk, ok)); - - return ok ? 1 : 0; -} - - -static int yaffs_WriteCheckpointObjects(yaffs_Device *dev) -{ - yaffs_Object *obj; - yaffs_CheckpointObject cp; - int i; - int ok = 1; - struct ylist_head *lh; - - - /* Iterate through the objects in each hash entry, - * dumping them to the checkpointing stream. - */ - - for (i = 0; ok && i < YAFFS_NOBJECT_BUCKETS; i++) { - ylist_for_each(lh, &dev->objectBucket[i].list) { - if (lh) { - obj = ylist_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.hdrChunk, (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)) { - T(YAFFS_TRACE_CHECKPOINT, (TSTR("struct size %d instead of %d ok %d"TENDSTR), - cp.structType, sizeof(cp), ok)); - ok = 0; - } - - T(YAFFS_TRACE_CHECKPOINT, (TSTR("Checkpoint read object %d parent %d type %d chunk %d " TENDSTR), - cp.objectId, cp.parentId, cp.variantType, cp.hdrChunk)); - - if (ok && cp.objectId == ~0) - done = 1; - else if (ok) { - obj = yaffs_FindOrCreateObjectByNumber(dev, cp.objectId, cp.variantType); - if (obj) { - ok = yaffs_CheckpointObjectToObject(obj, &cp); - if (!ok) - break; - if (obj->variantType == YAFFS_OBJECT_TYPE_FILE) { - ok = yaffs_ReadCheckpointTnodes(obj); - } else if (obj->variantType == YAFFS_OBJECT_TYPE_HARDLINK) { - obj->hardLinks.next = - (struct ylist_head *) hardList; - hardList = obj; - } - } else - ok = 0; + for (i = 0; i < dev->param.n_caches; i++) { + if (dev->cache[i].object == in) + dev->cache[i].object = NULL; } } - - if (ok) - yaffs_HardlinkFixup(dev, hardList); - - return ok ? 1 : 0; -} - -static int yaffs_WriteCheckpointSum(yaffs_Device *dev) -{ - __u32 checkpointSum; - int ok; - - yaffs_GetCheckpointSum(dev, &checkpointSum); - - ok = (yaffs_CheckpointWrite(dev, &checkpointSum, sizeof(checkpointSum)) == sizeof(checkpointSum)); - - if (!ok) - return 0; - - return 1; -} - -static int yaffs_ReadCheckpointSum(yaffs_Device *dev) -{ - __u32 checkpointSum0; - __u32 checkpointSum1; - int ok; - - yaffs_GetCheckpointSum(dev, &checkpointSum0); - - ok = (yaffs_CheckpointRead(dev, &checkpointSum1, sizeof(checkpointSum1)) == sizeof(checkpointSum1)); - - if (!ok) - return 0; - - if (checkpointSum0 != checkpointSum1) - return 0; - - return 1; } -static int yaffs_WriteCheckpointData(yaffs_Device *dev) -{ - int ok = 1; - - if (dev->skipCheckpointWrite || !dev->isYaffs2) { - T(YAFFS_TRACE_CHECKPOINT, (TSTR("skipping checkpoint write" TENDSTR))); - ok = 0; - } - - if (ok) - ok = yaffs_CheckpointOpen(dev, 1); - - if (ok) { - T(YAFFS_TRACE_CHECKPOINT, (TSTR("write checkpoint validity" TENDSTR))); - ok = yaffs_WriteCheckpointValidityMarker(dev, 1); - } - if (ok) { - T(YAFFS_TRACE_CHECKPOINT, (TSTR("write checkpoint device" TENDSTR))); - ok = yaffs_WriteCheckpointDevice(dev); - } - if (ok) { - T(YAFFS_TRACE_CHECKPOINT, (TSTR("write checkpoint objects" TENDSTR))); - ok = yaffs_WriteCheckpointObjects(dev); - } - if (ok) { - T(YAFFS_TRACE_CHECKPOINT, (TSTR("write checkpoint validity" TENDSTR))); - ok = yaffs_WriteCheckpointValidityMarker(dev, 0); - } - - if (ok) - ok = yaffs_WriteCheckpointSum(dev); - - if (!yaffs_CheckpointClose(dev)) - ok = 0; - - if (ok) - dev->isCheckpointed = 1; - else - dev->isCheckpointed = 0; - - return dev->isCheckpointed; -} - -static int yaffs_ReadCheckpointData(yaffs_Device *dev) -{ - int ok = 1; - - if (dev->skipCheckpointRead || !dev->isYaffs2) { - T(YAFFS_TRACE_CHECKPOINT, (TSTR("skipping checkpoint read" TENDSTR))); - ok = 0; - } - - if (ok) - ok = yaffs_CheckpointOpen(dev, 0); /* open for read */ - - if (ok) { - T(YAFFS_TRACE_CHECKPOINT, (TSTR("read checkpoint validity" TENDSTR))); - ok = yaffs_ReadCheckpointValidityMarker(dev, 1); - } - if (ok) { - T(YAFFS_TRACE_CHECKPOINT, (TSTR("read checkpoint device" TENDSTR))); - ok = yaffs_ReadCheckpointDevice(dev); - } - if (ok) { - T(YAFFS_TRACE_CHECKPOINT, (TSTR("read checkpoint objects" TENDSTR))); - ok = yaffs_ReadCheckpointObjects(dev); - } - if (ok) { - T(YAFFS_TRACE_CHECKPOINT, (TSTR("read checkpoint validity" TENDSTR))); - ok = yaffs_ReadCheckpointValidityMarker(dev, 0); - } - - if (ok) { - ok = yaffs_ReadCheckpointSum(dev); - T(YAFFS_TRACE_CHECKPOINT, (TSTR("read checkpoint checksum %d" TENDSTR), ok)); - } - - if (!yaffs_CheckpointClose(dev)) - 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) -{ - - T(YAFFS_TRACE_CHECKPOINT, (TSTR("save entry: isCheckpointed %d"TENDSTR), dev->isCheckpointed)); - - yaffs_VerifyObjects(dev); - yaffs_VerifyBlocks(dev); - yaffs_VerifyFreeChunks(dev); - - if (!dev->isCheckpointed) { - yaffs_InvalidateCheckpoint(dev); - yaffs_WriteCheckpointData(dev); - } - - T(YAFFS_TRACE_ALWAYS, (TSTR("save exit: isCheckpointed %d"TENDSTR), dev->isCheckpointed)); - - return dev->isCheckpointed; -} - -int yaffs_CheckpointRestore(yaffs_Device *dev) -{ - int retval; - T(YAFFS_TRACE_CHECKPOINT, (TSTR("restore entry: isCheckpointed %d"TENDSTR), dev->isCheckpointed)); - - retval = yaffs_ReadCheckpointData(dev); - - if (dev->isCheckpointed) { - yaffs_VerifyObjects(dev); - yaffs_VerifyBlocks(dev); - yaffs_VerifyFreeChunks(dev); - } - - T(YAFFS_TRACE_CHECKPOINT, (TSTR("restore exit: isCheckpointed %d"TENDSTR), dev->isCheckpointed)); - - return retval; -} - /*--------------------- File read/write ------------------------ * Read and write have very similar structures. * In general the read/write has three parts to it @@ -4649,59 +3434,59 @@ int yaffs_CheckpointRestore(yaffs_Device *dev) * 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_file_rd(yaffs_obj_t *in, __u8 *buffer, loff_t offset, + int n_bytes) { int chunk; __u32 start; int nToCopy; - int n = nBytes; + int n = n_bytes; int nDone = 0; - yaffs_ChunkCache *cache; + yaffs_cache_t *cache; - yaffs_Device *dev; + yaffs_dev_t *dev; - dev = in->myDev; + dev = in->my_dev; while (n > 0) { - /* chunk = offset / dev->nDataBytesPerChunk + 1; */ - /* start = offset % dev->nDataBytesPerChunk; */ - yaffs_AddrToChunk(dev, offset, &chunk, &start); + /* chunk = offset / dev->data_bytes_per_chunk + 1; */ + /* start = offset % dev->data_bytes_per_chunk; */ + yaffs_addr_to_chunk(dev, offset, &chunk, &start); chunk++; /* OK now check for the curveball where the start and end are in * the same chunk. */ - if ((start + n) < dev->nDataBytesPerChunk) + if ((start + n) < dev->data_bytes_per_chunk) nToCopy = n; else - nToCopy = dev->nDataBytesPerChunk - start; + nToCopy = dev->data_bytes_per_chunk - start; - cache = yaffs_FindChunkCache(in, chunk); + cache = yaffs_find_chunk_cache(in, chunk); /* If the chunk is already in the cache or it is less than a whole chunk * or we're using inband tags then use the cache (if there is caching) * else bypass the cache. */ - if (cache || nToCopy != dev->nDataBytesPerChunk || dev->inbandTags) { - if (dev->nShortOpCaches > 0) { + if (cache || nToCopy != dev->data_bytes_per_chunk || dev->param.inband_tags) { + if (dev->param.n_caches > 0) { /* If we can't find the data in the cache, then load it up. */ if (!cache) { - cache = yaffs_GrabChunkCache(in->myDev); + cache = yaffs_grab_chunk_cache(in->my_dev); cache->object = in; - cache->chunkId = chunk; + cache->chunk_id = chunk; cache->dirty = 0; cache->locked = 0; - yaffs_ReadChunkDataFromObject(in, chunk, + yaffs_rd_data_obj(in, chunk, cache-> data); - cache->nBytes = 0; + cache->n_bytes = 0; } - yaffs_UseChunkCache(dev, cache, 0); + yaffs_use_cache(dev, cache, 0); cache->locked = 1; @@ -4713,21 +3498,21 @@ int yaffs_ReadDataFromFile(yaffs_Object *in, __u8 *buffer, loff_t offset, /* Read into the local buffer then copy..*/ __u8 *localBuffer = - yaffs_GetTempBuffer(dev, __LINE__); - yaffs_ReadChunkDataFromObject(in, chunk, + yaffs_get_temp_buffer(dev, __LINE__); + yaffs_rd_data_obj(in, chunk, localBuffer); memcpy(buffer, &localBuffer[start], nToCopy); - yaffs_ReleaseTempBuffer(dev, localBuffer, + yaffs_release_temp_buffer(dev, localBuffer, __LINE__); } } else { /* A full chunk. Read directly into the supplied buffer. */ - yaffs_ReadChunkDataFromObject(in, chunk, buffer); + yaffs_rd_data_obj(in, chunk, buffer); } @@ -4741,44 +3526,42 @@ int yaffs_ReadDataFromFile(yaffs_Object *in, __u8 *buffer, loff_t offset, return nDone; } -int yaffs_WriteDataToFile(yaffs_Object *in, const __u8 *buffer, loff_t offset, - int nBytes, int writeThrough) +int yaffs_do_file_wr(yaffs_obj_t *in, const __u8 *buffer, loff_t offset, + int n_bytes, int write_trhrough) { int chunk; __u32 start; int nToCopy; - int n = nBytes; + int n = n_bytes; int nDone = 0; int nToWriteBack; int startOfWrite = offset; int chunkWritten = 0; - __u32 nBytesRead; + __u32 n_bytesRead; __u32 chunkStart; - yaffs_Device *dev; + yaffs_dev_t *dev; - dev = in->myDev; + dev = in->my_dev; while (n > 0 && chunkWritten >= 0) { - /* chunk = offset / dev->nDataBytesPerChunk + 1; */ - /* start = offset % dev->nDataBytesPerChunk; */ - yaffs_AddrToChunk(dev, offset, &chunk, &start); + yaffs_addr_to_chunk(dev, offset, &chunk, &start); - if (chunk * dev->nDataBytesPerChunk + start != offset || - start >= dev->nDataBytesPerChunk) { + if (chunk * dev->data_bytes_per_chunk + start != offset || + start >= dev->data_bytes_per_chunk) { T(YAFFS_TRACE_ERROR, ( TSTR("AddrToChunk of offset %d gives chunk %d start %d" TENDSTR), (int)offset, chunk, start)); } - chunk++; + chunk++; /* File pos to chunk in file offset */ /* OK now check for the curveball where the start and end are in * the same chunk. */ - if ((start + n) < dev->nDataBytesPerChunk) { + if ((start + n) < dev->data_bytes_per_chunk) { nToCopy = n; /* Now folks, to calculate how many bytes to write back.... @@ -4786,51 +3569,49 @@ int yaffs_WriteDataToFile(yaffs_Object *in, const __u8 *buffer, loff_t offset, * we need to write back as much as was there before. */ - chunkStart = ((chunk - 1) * dev->nDataBytesPerChunk); + chunkStart = ((chunk - 1) * dev->data_bytes_per_chunk); - if (chunkStart > in->variant.fileVariant.fileSize) - nBytesRead = 0; /* Past end of file */ + if (chunkStart > in->variant.file_variant.file_size) + n_bytesRead = 0; /* Past end of file */ else - nBytesRead = in->variant.fileVariant.fileSize - chunkStart; + n_bytesRead = in->variant.file_variant.file_size - chunkStart; - if (nBytesRead > dev->nDataBytesPerChunk) - nBytesRead = dev->nDataBytesPerChunk; + if (n_bytesRead > dev->data_bytes_per_chunk) + n_bytesRead = dev->data_bytes_per_chunk; nToWriteBack = - (nBytesRead > - (start + n)) ? nBytesRead : (start + n); + (n_bytesRead > + (start + n)) ? n_bytesRead : (start + n); - if (nToWriteBack < 0 || nToWriteBack > dev->nDataBytesPerChunk) + if (nToWriteBack < 0 || nToWriteBack > dev->data_bytes_per_chunk) YBUG(); } else { - nToCopy = dev->nDataBytesPerChunk - start; - nToWriteBack = dev->nDataBytesPerChunk; + nToCopy = dev->data_bytes_per_chunk - start; + nToWriteBack = dev->data_bytes_per_chunk; } - if (nToCopy != dev->nDataBytesPerChunk || dev->inbandTags) { + if (nToCopy != dev->data_bytes_per_chunk || dev->param.inband_tags) { /* 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->nShortOpCaches > 0) { - yaffs_ChunkCache *cache; + if (dev->param.n_caches > 0) { + yaffs_cache_t *cache; /* If we can't find the data in the cache, then load the cache */ - cache = yaffs_FindChunkCache(in, chunk); + cache = yaffs_find_chunk_cache(in, chunk); if (!cache - && yaffs_CheckSpaceForAllocation(in-> - myDev)) { - cache = yaffs_GrabChunkCache(in->myDev); + && yaffs_check_alloc_available(dev, 1)) { + cache = yaffs_grab_chunk_cache(dev); cache->object = in; - cache->chunkId = chunk; + cache->chunk_id = chunk; cache->dirty = 0; cache->locked = 0; - yaffs_ReadChunkDataFromObject(in, chunk, - cache-> - data); + yaffs_rd_data_obj(in, chunk, + cache->data); } else if (cache && !cache->dirty && - !yaffs_CheckSpaceForAllocation(in->myDev)) { + !yaffs_check_alloc_available(dev, 1)) { /* Drop the cache if it was a read cache item and * no space check has been made for it. */ @@ -4838,7 +3619,7 @@ int yaffs_WriteDataToFile(yaffs_Object *in, const __u8 *buffer, loff_t offset, } if (cache) { - yaffs_UseChunkCache(dev, cache, 1); + yaffs_use_cache(dev, cache, 1); cache->locked = 1; @@ -4847,14 +3628,14 @@ int yaffs_WriteDataToFile(yaffs_Object *in, const __u8 *buffer, loff_t offset, cache->locked = 0; - cache->nBytes = nToWriteBack; + cache->n_bytes = nToWriteBack; - if (writeThrough) { + if (write_trhrough) { chunkWritten = - yaffs_WriteChunkDataToObject + yaffs_wr_data_obj (cache->object, - cache->chunkId, - cache->data, cache->nBytes, + cache->chunk_id, + cache->data, cache->n_bytes, 1); cache->dirty = 0; } @@ -4868,9 +3649,9 @@ int yaffs_WriteDataToFile(yaffs_Object *in, const __u8 *buffer, loff_t offset, */ __u8 *localBuffer = - yaffs_GetTempBuffer(dev, __LINE__); + yaffs_get_temp_buffer(dev, __LINE__); - yaffs_ReadChunkDataFromObject(in, chunk, + yaffs_rd_data_obj(in, chunk, localBuffer); @@ -4878,12 +3659,12 @@ int yaffs_WriteDataToFile(yaffs_Object *in, const __u8 *buffer, loff_t offset, memcpy(&localBuffer[start], buffer, nToCopy); chunkWritten = - yaffs_WriteChunkDataToObject(in, chunk, + yaffs_wr_data_obj(in, chunk, localBuffer, nToWriteBack, 0); - yaffs_ReleaseTempBuffer(dev, localBuffer, + yaffs_release_temp_buffer(dev, localBuffer, __LINE__); } @@ -4894,12 +3675,12 @@ int yaffs_WriteDataToFile(yaffs_Object *in, const __u8 *buffer, loff_t offset, chunkWritten = - yaffs_WriteChunkDataToObject(in, chunk, buffer, - dev->nDataBytesPerChunk, + yaffs_wr_data_obj(in, chunk, buffer, + dev->data_bytes_per_chunk, 0); /* Since we've overwritten the cached data, we better invalidate it. */ - yaffs_InvalidateChunkCache(in, chunk); + yaffs_invalidate_chunk_cache(in, chunk); } if (chunkWritten >= 0) { @@ -4913,29 +3694,37 @@ int yaffs_WriteDataToFile(yaffs_Object *in, const __u8 *buffer, loff_t offset, /* Update file object */ - if ((startOfWrite + nDone) > in->variant.fileVariant.fileSize) - in->variant.fileVariant.fileSize = (startOfWrite + nDone); + if ((startOfWrite + nDone) > in->variant.file_variant.file_size) + in->variant.file_variant.file_size = (startOfWrite + nDone); in->dirty = 1; return nDone; } +int yaffs_wr_file(yaffs_obj_t *in, const __u8 *buffer, loff_t offset, + int n_bytes, int write_trhrough) +{ + yaffs2_handle_hole(in,offset); + return yaffs_do_file_wr(in,buffer,offset,n_bytes,write_trhrough); +} + + /* ---------------------- File resizing stuff ------------------ */ -static void yaffs_PruneResizedChunks(yaffs_Object *in, int newSize) +static void yaffs_prune_chunks(yaffs_obj_t *in, int new_size) { - yaffs_Device *dev = in->myDev; - int oldFileSize = in->variant.fileVariant.fileSize; + yaffs_dev_t *dev = in->my_dev; + int oldFileSize = in->variant.file_variant.file_size; - int lastDel = 1 + (oldFileSize - 1) / dev->nDataBytesPerChunk; + int lastDel = 1 + (oldFileSize - 1) / dev->data_bytes_per_chunk; - int startDel = 1 + (newSize + dev->nDataBytesPerChunk - 1) / - dev->nDataBytesPerChunk; + int startDel = 1 + (new_size + dev->data_bytes_per_chunk - 1) / + dev->data_bytes_per_chunk; int i; - int chunkId; + int chunk_id; /* Delete backwards so that we don't end up with holes if * power is lost part-way through the operation. @@ -4943,103 +3732,112 @@ static void yaffs_PruneResizedChunks(yaffs_Object *in, int newSize) for (i = lastDel; i >= startDel; i--) { /* NB this could be optimised somewhat, * eg. could retrieve the tags and write them without - * using yaffs_DeleteChunk + * using yaffs_chunk_del */ - chunkId = yaffs_FindAndDeleteChunkInFile(in, i, NULL); - if (chunkId > 0) { - if (chunkId < - (dev->internalStartBlock * dev->nChunksPerBlock) - || chunkId >= - ((dev->internalEndBlock + - 1) * dev->nChunksPerBlock)) { + chunk_id = yaffs_find_del_file_chunk(in, i, NULL); + if (chunk_id > 0) { + if (chunk_id < + (dev->internal_start_block * dev->param.chunks_per_block) + || chunk_id >= + ((dev->internal_end_block + + 1) * dev->param.chunks_per_block)) { T(YAFFS_TRACE_ALWAYS, - (TSTR("Found daft chunkId %d for %d" TENDSTR), - chunkId, i)); + (TSTR("Found daft chunk_id %d for %d" TENDSTR), + chunk_id, i)); } else { - in->nDataChunks--; - yaffs_DeleteChunk(dev, chunkId, 1, __LINE__); + in->n_data_chunks--; + yaffs_chunk_del(dev, chunk_id, 1, __LINE__); } } } } -int yaffs_ResizeFile(yaffs_Object *in, loff_t newSize) -{ - int oldFileSize = in->variant.fileVariant.fileSize; - __u32 newSizeOfPartialChunk; +void yaffs_resize_file_down( yaffs_obj_t *obj, loff_t new_size) +{ int newFullChunks; + __u32 new_sizeOfPartialChunk; + yaffs_dev_t *dev = obj->my_dev; - yaffs_Device *dev = in->myDev; + yaffs_addr_to_chunk(dev, new_size, &newFullChunks, &new_sizeOfPartialChunk); - yaffs_AddrToChunk(dev, newSize, &newFullChunks, &newSizeOfPartialChunk); + yaffs_prune_chunks(obj, new_size); - yaffs_FlushFilesChunkCache(in); - yaffs_InvalidateWholeChunkCache(in); + if (new_sizeOfPartialChunk != 0) { + int lastChunk = 1 + newFullChunks; + __u8 *localBuffer = yaffs_get_temp_buffer(dev, __LINE__); - yaffs_CheckGarbageCollection(dev); + /* Got to read and rewrite the last chunk with its new size and zero pad */ + yaffs_rd_data_obj(obj, lastChunk, localBuffer); + memset(localBuffer + new_sizeOfPartialChunk, 0, + dev->data_bytes_per_chunk - new_sizeOfPartialChunk); - if (in->variantType != YAFFS_OBJECT_TYPE_FILE) - return YAFFS_FAIL; - - if (newSize == oldFileSize) - return YAFFS_OK; + yaffs_wr_data_obj(obj, lastChunk, localBuffer, + new_sizeOfPartialChunk, 1); - if (newSize < oldFileSize) { - - yaffs_PruneResizedChunks(in, newSize); + yaffs_release_temp_buffer(dev, localBuffer, __LINE__); + } - if (newSizeOfPartialChunk != 0) { - int lastChunk = 1 + newFullChunks; + obj->variant.file_variant.file_size = new_size; - __u8 *localBuffer = yaffs_GetTempBuffer(dev, __LINE__); + yaffs_prune_tree(dev, &obj->variant.file_variant); +} - /* Got to read and rewrite the last chunk with its new size and zero pad */ - yaffs_ReadChunkDataFromObject(in, lastChunk, - localBuffer); - memset(localBuffer + newSizeOfPartialChunk, 0, - dev->nDataBytesPerChunk - newSizeOfPartialChunk); +int yaffs_resize_file(yaffs_obj_t *in, loff_t new_size) +{ + yaffs_dev_t *dev = in->my_dev; + int oldFileSize = in->variant.file_variant.file_size; - yaffs_WriteChunkDataToObject(in, lastChunk, localBuffer, - newSizeOfPartialChunk, 1); + yaffs_flush_file_cache(in); + yaffs_invalidate_whole_cache(in); - yaffs_ReleaseTempBuffer(dev, localBuffer, __LINE__); - } + yaffs_check_gc(dev,0); - in->variant.fileVariant.fileSize = newSize; + if (in->variant_type != YAFFS_OBJECT_TYPE_FILE) + return YAFFS_FAIL; - yaffs_PruneFileStructure(dev, &in->variant.fileVariant); + if (new_size == oldFileSize) + return YAFFS_OK; + + if(new_size > oldFileSize){ + yaffs2_handle_hole(in,new_size); + in->variant.file_variant.file_size = new_size; } else { - /* newsSize > oldFileSize */ - in->variant.fileVariant.fileSize = newSize; - } - + /* new_size < oldFileSize */ + yaffs_resize_file_down(in, new_size); + } - /* 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 && - in->parent->objectId != YAFFS_OBJECTID_UNLINKED && - in->parent->objectId != YAFFS_OBJECTID_DELETED) - yaffs_UpdateObjectHeader(in, NULL, 0, - (newSize < oldFileSize) ? 1 : 0, 0); + !in->is_shadowed && + in->parent->obj_id != YAFFS_OBJECTID_UNLINKED && + in->parent->obj_id != YAFFS_OBJECTID_DELETED) + yaffs_update_oh(in, NULL, 0, 0, 0, NULL); + return YAFFS_OK; } -loff_t yaffs_GetFileSize(yaffs_Object *obj) +loff_t yaffs_get_file_size(yaffs_obj_t *obj) { - obj = yaffs_GetEquivalentObject(obj); + YCHAR *alias = NULL; + obj = yaffs_get_equivalent_obj(obj); - switch (obj->variantType) { + switch (obj->variant_type) { case YAFFS_OBJECT_TYPE_FILE: - return obj->variant.fileVariant.fileSize; + return obj->variant.file_variant.file_size; case YAFFS_OBJECT_TYPE_SYMLINK: - return yaffs_strlen(obj->variant.symLinkVariant.alias); + alias = obj->variant.symlink_variant.alias; + if(!alias) + return 0; + return yaffs_strnlen(alias,YAFFS_MAX_ALIAS_LENGTH); default: return 0; } @@ -5047,23 +3845,27 @@ loff_t yaffs_GetFileSize(yaffs_Object *obj) -int yaffs_FlushFile(yaffs_Object *in, int updateTime) +int yaffs_flush_file(yaffs_obj_t *in, int update_time, int data_sync) { int retVal; if (in->dirty) { - yaffs_FlushFilesChunkCache(in); - if (updateTime) { + yaffs_flush_file_cache(in); + if(data_sync) /* Only sync data */ + retVal=YAFFS_OK; + else { + if (update_time) { #ifdef CONFIG_YAFFS_WINCE - yfsd_WinFileTimeNow(in->win_mtime); + yfsd_win_file_time_now(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_update_oh(in, NULL, 0, 0, 0, NULL) >= + 0) ? YAFFS_OK : YAFFS_FAIL; + } } else { retVal = YAFFS_OK; } @@ -5072,60 +3874,56 @@ int yaffs_FlushFile(yaffs_Object *in, int updateTime) } -static int yaffs_DoGenericObjectDeletion(yaffs_Object *in) +static int yaffs_generic_obj_del(yaffs_obj_t *in) { /* First off, invalidate the file's data in the cache, without flushing. */ - yaffs_InvalidateWholeChunkCache(in); + yaffs_invalidate_whole_cache(in); - if (in->myDev->isYaffs2 && (in->parent != in->myDev->deletedDir)) { + if (in->my_dev->param.is_yaffs2 && (in->parent != in->my_dev->del_dir)) { /* Move to the unlinked directory so we have a record that it was deleted. */ - yaffs_ChangeObjectName(in, in->myDev->deletedDir, _Y("deleted"), 0, 0); + yaffs_change_obj_name(in, in->my_dev->del_dir, _Y("deleted"), 0, 0); } - yaffs_RemoveObjectFromDirectory(in); - yaffs_DeleteChunk(in->myDev, in->hdrChunk, 1, __LINE__); - in->hdrChunk = 0; + yaffs_remove_obj_from_dir(in); + yaffs_chunk_del(in->my_dev, in->hdr_chunk, 1, __LINE__); + in->hdr_chunk = 0; - yaffs_FreeObject(in); + yaffs_free_obj(in); return YAFFS_OK; } -/* yaffs_DeleteFile deletes the whole file data +/* yaffs_del_file deletes the whole file data * and the inode associated with the file. * It does not delete the links associated with the file. */ -static int yaffs_UnlinkFileIfNeeded(yaffs_Object *in) +static int yaffs_unlink_file_if_needed(yaffs_obj_t *in) { int retVal; int immediateDeletion = 0; + yaffs_dev_t *dev = in->my_dev; -#ifdef __KERNEL__ - if (!in->myInode) + if (!in->my_inode) immediateDeletion = 1; -#else - if (in->inUse <= 0) - immediateDeletion = 1; -#endif if (immediateDeletion) { retVal = - yaffs_ChangeObjectName(in, in->myDev->deletedDir, + yaffs_change_obj_name(in, in->my_dev->del_dir, _Y("deleted"), 0, 0); T(YAFFS_TRACE_TRACING, (TSTR("yaffs: immediate deletion of file %d" TENDSTR), - in->objectId)); + in->obj_id)); in->deleted = 1; - in->myDev->nDeletedFiles++; - if (1 || in->myDev->isYaffs2) - yaffs_ResizeFile(in, 0); - yaffs_SoftDeleteFile(in); + in->my_dev->n_deleted_files++; + if (dev->param.disable_soft_del || dev->param.is_yaffs2) + yaffs_resize_file(in, 0); + yaffs_soft_del_file(in); } else { retVal = - yaffs_ChangeObjectName(in, in->myDev->unlinkedDir, + yaffs_change_obj_name(in, in->my_dev->unlinked_dir, _Y("unlinked"), 0, 0); } @@ -5133,81 +3931,96 @@ static int yaffs_UnlinkFileIfNeeded(yaffs_Object *in) return retVal; } -int yaffs_DeleteFile(yaffs_Object *in) +int yaffs_del_file(yaffs_obj_t *in) { int retVal = YAFFS_OK; - int deleted = in->deleted; + int deleted; /* Need to cache value on stack if in is freed */ + yaffs_dev_t *dev = in->my_dev; - yaffs_ResizeFile(in, 0); + if (dev->param.disable_soft_del || dev->param.is_yaffs2) + yaffs_resize_file(in, 0); - if (in->nDataChunks > 0) { + if (in->n_data_chunks > 0) { /* 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); + retVal = yaffs_unlink_file_if_needed(in); + + deleted = in->deleted; if (retVal == YAFFS_OK && in->unlinked && !in->deleted) { in->deleted = 1; deleted = 1; - in->myDev->nDeletedFiles++; - yaffs_SoftDeleteFile(in); + in->my_dev->n_deleted_files++; + yaffs_soft_del_file(in); } 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); - in->variant.fileVariant.top = NULL; - yaffs_DoGenericObjectDeletion(in); + yaffs_free_tnode(in->my_dev, in->variant.file_variant.top); + in->variant.file_variant.top = NULL; + yaffs_generic_obj_del(in); return YAFFS_OK; } } -static int yaffs_DeleteDirectory(yaffs_Object *in) +static int yaffs_is_non_empty_dir(yaffs_obj_t *obj) { - /* First check that the directory is empty. */ - if (ylist_empty(&in->variant.directoryVariant.children)) - return yaffs_DoGenericObjectDeletion(in); + return (obj->variant_type == YAFFS_OBJECT_TYPE_DIRECTORY) && + !(ylist_empty(&obj->variant.dir_variant.children)); +} - return YAFFS_FAIL; +static int yaffs_del_dir(yaffs_obj_t *obj) +{ + /* First check that the directory is empty. */ + if (yaffs_is_non_empty_dir(obj)) + return YAFFS_FAIL; + return yaffs_generic_obj_del(obj); } -static int yaffs_DeleteSymLink(yaffs_Object *in) +static int yaffs_del_symlink(yaffs_obj_t *in) { - YFREE(in->variant.symLinkVariant.alias); + if(in->variant.symlink_variant.alias) + YFREE(in->variant.symlink_variant.alias); + in->variant.symlink_variant.alias=NULL; - return yaffs_DoGenericObjectDeletion(in); + return yaffs_generic_obj_del(in); } -static int yaffs_DeleteHardLink(yaffs_Object *in) +static int yaffs_del_link(yaffs_obj_t *in) { /* remove this hardlink from the list assocaited with the equivalent * object */ - ylist_del_init(&in->hardLinks); - return yaffs_DoGenericObjectDeletion(in); + ylist_del_init(&in->hard_links); + return yaffs_generic_obj_del(in); } -int yaffs_DeleteObject(yaffs_Object *obj) +int yaffs_del_obj(yaffs_obj_t *obj) { int retVal = -1; - switch (obj->variantType) { + switch (obj->variant_type) { case YAFFS_OBJECT_TYPE_FILE: - retVal = yaffs_DeleteFile(obj); + retVal = yaffs_del_file(obj); break; case YAFFS_OBJECT_TYPE_DIRECTORY: - return yaffs_DeleteDirectory(obj); + if(!ylist_empty(&obj->variant.dir_variant.dirty)){ + T(YAFFS_TRACE_BACKGROUND, (TSTR("Remove object %d from dirty directories" TENDSTR),obj->obj_id)); + ylist_del_init(&obj->variant.dir_variant.dirty); + } + return yaffs_del_dir(obj); break; case YAFFS_OBJECT_TYPE_SYMLINK: - retVal = yaffs_DeleteSymLink(obj); + retVal = yaffs_del_symlink(obj); break; case YAFFS_OBJECT_TYPE_HARDLINK: - retVal = yaffs_DeleteHardLink(obj); + retVal = yaffs_del_link(obj); break; case YAFFS_OBJECT_TYPE_SPECIAL: - retVal = yaffs_DoGenericObjectDeletion(obj); + retVal = yaffs_generic_obj_del(obj); break; case YAFFS_OBJECT_TYPE_UNKNOWN: retVal = 0; @@ -5217,22 +4030,20 @@ int retVal = -1; return retVal; } -static int yaffs_UnlinkWorker(yaffs_Object *obj) +static int yaffs_unlink_worker(yaffs_obj_t *obj) { int immediateDeletion = 0; -#ifdef __KERNEL__ - if (!obj->myInode) + if (!obj->my_inode) immediateDeletion = 1; -#else - if (obj->inUse <= 0) - immediateDeletion = 1; -#endif - if (obj->variantType == YAFFS_OBJECT_TYPE_HARDLINK) { - return yaffs_DeleteHardLink(obj); - } else if (!ylist_empty(&obj->hardLinks)) { + if(obj) + yaffs_update_parent(obj->parent); + + if (obj->variant_type == YAFFS_OBJECT_TYPE_HARDLINK) { + return yaffs_del_link(obj); + } else if (!ylist_empty(&obj->hard_links)) { /* Curve ball: We're unlinking an object that has a hardlink. * * This problem arises because we are not strictly following @@ -5242,79 +4053,85 @@ static int yaffs_UnlinkWorker(yaffs_Object *obj) * 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_obj_t *hl; + yaffs_obj_t *parent; int retVal; YCHAR name[YAFFS_MAX_NAME_LENGTH + 1]; - hl = ylist_entry(obj->hardLinks.next, yaffs_Object, hardLinks); + hl = ylist_entry(obj->hard_links.next, yaffs_obj_t, hard_links); - ylist_del_init(&hl->hardLinks); - ylist_del_init(&hl->siblings); + yaffs_get_obj_name(hl, name, YAFFS_MAX_NAME_LENGTH + 1); + parent = hl->parent; - yaffs_GetObjectName(hl, name, YAFFS_MAX_NAME_LENGTH + 1); + ylist_del_init(&hl->hard_links); - retVal = yaffs_ChangeObjectName(obj, hl->parent, name, 0, 0); + yaffs_add_obj_to_dir(obj->my_dev->unlinked_dir, hl); + + retVal = yaffs_change_obj_name(obj,parent, name, 0, 0); if (retVal == YAFFS_OK) - retVal = yaffs_DoGenericObjectDeletion(hl); + retVal = yaffs_generic_obj_del(hl); return retVal; } else if (immediateDeletion) { - switch (obj->variantType) { + switch (obj->variant_type) { case YAFFS_OBJECT_TYPE_FILE: - return yaffs_DeleteFile(obj); + return yaffs_del_file(obj); break; case YAFFS_OBJECT_TYPE_DIRECTORY: - return yaffs_DeleteDirectory(obj); + ylist_del_init(&obj->variant.dir_variant.dirty); + return yaffs_del_dir(obj); break; case YAFFS_OBJECT_TYPE_SYMLINK: - return yaffs_DeleteSymLink(obj); + return yaffs_del_symlink(obj); break; case YAFFS_OBJECT_TYPE_SPECIAL: - return yaffs_DoGenericObjectDeletion(obj); + return yaffs_generic_obj_del(obj); break; case YAFFS_OBJECT_TYPE_HARDLINK: case YAFFS_OBJECT_TYPE_UNKNOWN: default: return YAFFS_FAIL; } - } else - return yaffs_ChangeObjectName(obj, obj->myDev->unlinkedDir, + } else if(yaffs_is_non_empty_dir(obj)) + return YAFFS_FAIL; + else + return yaffs_change_obj_name(obj, obj->my_dev->unlinked_dir, _Y("unlinked"), 0, 0); } -static int yaffs_UnlinkObject(yaffs_Object *obj) +static int yaffs_unlink_obj(yaffs_obj_t *obj) { - if (obj && obj->unlinkAllowed) - return yaffs_UnlinkWorker(obj); + if (obj && obj->unlink_allowed) + return yaffs_unlink_worker(obj); return YAFFS_FAIL; } -int yaffs_Unlink(yaffs_Object *dir, const YCHAR *name) +int yaffs_unlinker(yaffs_obj_t *dir, const YCHAR *name) { - yaffs_Object *obj; + yaffs_obj_t *obj; - obj = yaffs_FindObjectByName(dir, name); - return yaffs_UnlinkObject(obj); + obj = yaffs_find_by_name(dir, name); + return yaffs_unlink_obj(obj); } /*----------------------- Initialisation Scanning ---------------------- */ -static void yaffs_HandleShadowedObject(yaffs_Device *dev, int objId, - int backwardScanning) +void yaffs_handle_shadowed_obj(yaffs_dev_t *dev, int obj_id, + int backward_scanning) { - yaffs_Object *obj; + yaffs_obj_t *obj; - if (!backwardScanning) { + if (!backward_scanning) { /* Handle YAFFS1 forward scanning case * For YAFFS1 we always do the deletion */ @@ -5323,7 +4140,8 @@ static void yaffs_HandleShadowedObject(yaffs_Device *dev, int objId, /* Handle YAFFS2 case (backward scanning) * If the shadowed object exists then ignore. */ - if (yaffs_FindObjectByNumber(dev, objId)) + obj = yaffs_find_by_number(dev, obj_id); + if(obj) return; } @@ -5331,567 +4149,225 @@ static void yaffs_HandleShadowedObject(yaffs_Device *dev, int objId, * We put it in unlinked dir to be cleaned up after the scanning */ obj = - yaffs_FindOrCreateObjectByNumber(dev, objId, + yaffs_find_or_create_by_number(dev, obj_id, YAFFS_OBJECT_TYPE_FILE); if (!obj) return; - yaffs_AddObjectToDirectory(dev->unlinkedDir, obj); - obj->variant.fileVariant.shrinkSize = 0; + obj->is_shadowed = 1; + yaffs_add_obj_to_dir(dev->unlinked_dir, obj); + obj->variant.file_variant.shrink_size = 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_link_fixup(yaffs_dev_t *dev, yaffs_obj_t *hard_list) { - yaffs_Object *hl; - yaffs_Object *in; + yaffs_obj_t *hl; + yaffs_obj_t *in; - while (hardList) { - hl = hardList; - hardList = (yaffs_Object *) (hardList->hardLinks.next); + while (hard_list) { + hl = hard_list; + hard_list = (yaffs_obj_t *) (hard_list->hard_links.next); - in = yaffs_FindObjectByNumber(dev, - hl->variant.hardLinkVariant. - equivalentObjectId); + in = yaffs_find_by_number(dev, + hl->variant.hardlink_variant. + equiv_id); if (in) { /* Add the hardlink pointers */ - hl->variant.hardLinkVariant.equivalentObject = in; - ylist_add(&hl->hardLinks, &in->hardLinks); + hl->variant.hardlink_variant.equiv_obj = in; + ylist_add(&hl->hard_links, &in->hard_links); } else { /* Todo Need to report/handle this better. * Got a problem... hardlink to a non-existant object */ - hl->variant.hardLinkVariant.equivalentObject = NULL; - YINIT_LIST_HEAD(&hl->hardLinks); + hl->variant.hardlink_variant.equiv_obj = NULL; + YINIT_LIST_HEAD(&hl->hard_links); } } } - - - -static int ybicmp(const void *a, const void *b) -{ - register int aseq = ((yaffs_BlockIndex *)a)->seq; - register int bseq = ((yaffs_BlockIndex *)b)->seq; - register int ablock = ((yaffs_BlockIndex *)a)->block; - register int bblock = ((yaffs_BlockIndex *)b)->block; - if (aseq == bseq) - return ablock - bblock; - else - return aseq - bseq; -} - - -struct yaffs_ShadowFixerStruct { - int objectId; - int shadowedId; - struct yaffs_ShadowFixerStruct *next; -}; - - -static void yaffs_StripDeletedObjects(yaffs_Device *dev) +static void yaffs_strip_deleted_objs(yaffs_dev_t *dev) { /* * Sort out state of unlinked and deleted objects after scanning. */ struct ylist_head *i; struct ylist_head *n; - yaffs_Object *l; + yaffs_obj_t *l; + + if (dev->read_only) + return; /* Soft delete all the unlinked files */ ylist_for_each_safe(i, n, - &dev->unlinkedDir->variant.directoryVariant.children) { + &dev->unlinked_dir->variant.dir_variant.children) { if (i) { - l = ylist_entry(i, yaffs_Object, siblings); - yaffs_DeleteObject(l); + l = ylist_entry(i, yaffs_obj_t, siblings); + yaffs_del_obj(l); } } ylist_for_each_safe(i, n, - &dev->deletedDir->variant.directoryVariant.children) { + &dev->del_dir->variant.dir_variant.children) { if (i) { - l = ylist_entry(i, yaffs_Object, siblings); - yaffs_DeleteObject(l); + l = ylist_entry(i, yaffs_obj_t, siblings); + yaffs_del_obj(l); } } } -static int yaffs_Scan(yaffs_Device *dev) +/* + * 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: + * root_dir->parent == unlinked_dir->parent == del_dir->parent == NULL + * lostNfound->parent == root_dir + * + * 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_has_null_parent(yaffs_dev_t *dev, yaffs_obj_t *obj) { - yaffs_ExtendedTags tags; - int blk; - int blockIterator; - int startIterator; - int endIterator; - int result; - - int chunk; - int c; - int deleted; - yaffs_BlockState state; - yaffs_Object *hardList = NULL; - yaffs_BlockInfo *bi; - __u32 sequenceNumber; - yaffs_ObjectHeader *oh; - yaffs_Object *in; - yaffs_Object *parent; - - int alloc_failed = 0; - - struct yaffs_ShadowFixerStruct *shadowFixerList = NULL; - - - __u8 *chunkData; - - - - 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; - - /* 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_BAD_BLOCK) - bi->blockState = state = YAFFS_BLOCK_STATE_DEAD; - - T(YAFFS_TRACE_SCAN_DEBUG, - (TSTR("Block scanning block %d state %d seq %d" TENDSTR), blk, - state, sequenceNumber)); - - if (state == YAFFS_BLOCK_STATE_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; - } - } - - startIterator = dev->internalStartBlock; - endIterator = dev->internalEndBlock; - - /* For each block.... */ - for (blockIterator = startIterator; !alloc_failed && blockIterator <= endIterator; - blockIterator++) { - - YYIELD(); - - YYIELD(); - - blk = blockIterator; - - bi = yaffs_GetBlockInfo(dev, blk); - state = bi->blockState; - - deleted = 0; - - /* For each chunk in each block that needs scanning....*/ - for (c = 0; !alloc_failed && 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 (tags.eccResult == YAFFS_ECC_RESULT_UNFIXED || 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. */ - - } - - dev->nFreeChunks += (dev->nChunksPerBlock - c); - } else if (tags.chunkId > 0) { - /* chunkId > 0 so it is a data chunk... */ - unsigned int endpos; - - yaffs_SetChunkBit(dev, blk, c); - bi->pagesInUse++; - - in = yaffs_FindOrCreateObjectByNumber(dev, - tags. - objectId, - YAFFS_OBJECT_TYPE_FILE); - /* PutChunkIntoFile checks for a clash (two data chunks with - * the same chunkId). - */ + return (obj == dev->del_dir || + obj == dev->unlinked_dir|| + obj == dev->root_dir); +} - if (!in) - alloc_failed = 1; +static void yaffs_fix_hanging_objs(yaffs_dev_t *dev) +{ + yaffs_obj_t *obj; + yaffs_obj_t *parent; + int i; + struct ylist_head *lh; + struct ylist_head *n; + int depthLimit; + int hanging; - if (in) { - if (!yaffs_PutChunkIntoFile(in, tags.chunkId, chunk, 1)) - alloc_failed = 1; - } + if (dev->read_only) + return; - endpos = - (tags.chunkId - 1) * dev->nDataBytesPerChunk + - tags.byteCount; - if (in && - 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->obj_bucket[i].list) { + if (lh) { + obj = ylist_entry(lh, yaffs_obj_t, hash_link); + parent= obj->parent; + + if(yaffs_has_null_parent(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->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) + hanging = 1; + else if(yaffs_has_null_parent(dev,parent)) + hanging = 0; + else { + /* + * Need to follow the parent chain to see if it is hanging. */ - - yaffs_DeleteObject(in); - - in = 0; - } - - in = yaffs_FindOrCreateObjectByNumber(dev, - tags. - objectId, - oh->type); - - if (!in) - alloc_failed = 1; - - if (in && oh->shadowsObject > 0) { - - struct yaffs_ShadowFixerStruct *fixer; - fixer = YMALLOC(sizeof(struct yaffs_ShadowFixerStruct)); - if (fixer) { - fixer->next = shadowFixerList; - shadowFixerList = fixer; - fixer->objectId = tags.objectId; - fixer->shadowedId = oh->shadowsObject; + hanging = 0; + depthLimit=100; + + while(parent != dev->root_dir && + parent->parent && + parent->parent->variant_type == YAFFS_OBJECT_TYPE_DIRECTORY && + depthLimit > 0){ + parent = parent->parent; + depthLimit--; } - + if(parent != dev->root_dir) + hanging = 1; } - - if (in && in->valid) { - /* We have already filled this one. We have a duplicate and need to resolve it. */ - - unsigned existingSerial = in->serial; - unsigned newSerial = tags.serialNumber; - - if (((existingSerial + 1) & 3) == newSerial) { - /* Use new one - destroy the exisiting one */ - yaffs_DeleteChunk(dev, - in->hdrChunk, - 1, __LINE__); - in->valid = 0; - } else { - /* Use existing - destroy this one. */ - yaffs_DeleteChunk(dev, chunk, 1, - __LINE__); - } - } - - if (in && !in->valid && - (tags.objectId == YAFFS_OBJECTID_ROOT || - tags.objectId == YAFFS_OBJECTID_LOSTNFOUND)) { - /* We only load some info, don't fiddle with directory structure */ - in->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->hdrChunk = chunk; - in->serial = tags.serialNumber; - - } else if (in && !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->hdrChunk = chunk; - in->serial = tags.serialNumber; - - 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) - alloc_failed = 1; - if (parent && parent->variantType == - YAFFS_OBJECT_TYPE_UNKNOWN) { - /* Set up as a directory */ - parent->variantType = - YAFFS_OBJECT_TYPE_DIRECTORY; - YINIT_LIST_HEAD(&parent->variant. - directoryVariant. - children); - } else if (!parent || parent->variantType != - YAFFS_OBJECT_TYPE_DIRECTORY) { - /* Hoosterman, another problem.... - * We're trying to use a non-directory as a directory - */ - - T(YAFFS_TRACE_ERROR, - (TSTR - ("yaffs tragedy: attempting to use non-directory as a directory in scan. Put in lost+found." - 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->useHeaderFileSize) - - in->variant.fileVariant. - fileSize = - oh->fileSize; - - break; - case YAFFS_OBJECT_TYPE_HARDLINK: - in->variant.hardLinkVariant. - equivalentObjectId = - oh->equivalentObjectId; - in->hardLinks.next = - (struct ylist_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); - if (!in->variant.symLinkVariant.alias) - alloc_failed = 1; - 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->obj_id)); + yaffs_add_obj_to_dir(dev->lost_n_found,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); - } - } +} - /* 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. - */ +/* + * Delete directory contents for cleaning up lost and found. + */ +static void yaffs_del_dir_contents(yaffs_obj_t *dir) +{ + yaffs_obj_t *obj; + struct ylist_head *lh; + struct ylist_head *n; - yaffs_HardlinkFixup(dev, hardList); + if(dir->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) + YBUG(); + + ylist_for_each_safe(lh, n, &dir->variant.dir_variant.children) { + if (lh) { + obj = ylist_entry(lh, yaffs_obj_t, siblings); + if(obj->variant_type == YAFFS_OBJECT_TYPE_DIRECTORY) + yaffs_del_dir_contents(obj); - /* Fix up any shadowed objects */ - { - struct yaffs_ShadowFixerStruct *fixer; - yaffs_Object *obj; + T(YAFFS_TRACE_SCAN, + (TSTR("Deleting lost_found object %d" TENDSTR), + obj->obj_id)); - while (shadowFixerList) { - fixer = shadowFixerList; - shadowFixerList = fixer->next; - /* Complete the rename transaction by deleting the shadowed object - * then setting the object header to unshadowed. + /* Need to use UnlinkObject since Delete would not handle + * hardlinked objects correctly. */ - obj = yaffs_FindObjectByNumber(dev, fixer->shadowedId); - if (obj) - yaffs_DeleteObject(obj); - - obj = yaffs_FindObjectByNumber(dev, fixer->objectId); - - if (obj) - yaffs_UpdateObjectHeader(obj, NULL, 1, 0, 0); - - YFREE(fixer); + yaffs_unlink_obj(obj); } } + +} - yaffs_ReleaseTempBuffer(dev, chunkData, __LINE__); - - if (alloc_failed) - return YAFFS_FAIL; - - T(YAFFS_TRACE_SCAN, (TSTR("yaffs_Scan ends" TENDSTR))); - - - return YAFFS_OK; +static void yaffs_empty_l_n_f(yaffs_dev_t *dev) +{ + yaffs_del_dir_contents(dev->lost_n_found); } -static void yaffs_CheckObjectDetailsLoaded(yaffs_Object *in) +static void yaffs_check_obj_details_loaded(yaffs_obj_t *in) { __u8 *chunkData; - yaffs_ObjectHeader *oh; - yaffs_Device *dev; - yaffs_ExtendedTags tags; + yaffs_obj_header *oh; + yaffs_dev_t *dev; + yaffs_ext_tags tags; int result; int alloc_failed = 0; if (!in) return; - dev = in->myDev; + dev = in->my_dev; #if 0 T(YAFFS_TRACE_SCAN, (TSTR("details for object %d %s loaded" TENDSTR), - in->objectId, - in->lazyLoaded ? "not yet" : "already")); + in->obj_id, + in->lazy_loaded ? "not yet" : "already")); #endif - if (in->lazyLoaded && in->hdrChunk > 0) { - in->lazyLoaded = 0; - chunkData = yaffs_GetTempBuffer(dev, __LINE__); + if (in->lazy_loaded && in->hdr_chunk > 0) { + in->lazy_loaded = 0; + chunkData = yaffs_get_temp_buffer(dev, __LINE__); - result = yaffs_ReadChunkWithTagsFromNAND(dev, in->hdrChunk, chunkData, &tags); - oh = (yaffs_ObjectHeader *) chunkData; + result = yaffs_rd_chunk_tags_nand(dev, in->hdr_chunk, chunkData, &tags); + oh = (yaffs_obj_header *) chunkData; in->yst_mode = oh->yst_mode; #ifdef CONFIG_YAFFS_WINCE @@ -5910,786 +4386,106 @@ static void yaffs_CheckObjectDetailsLoaded(yaffs_Object *in) in->yst_rdev = oh->yst_rdev; #endif - yaffs_SetObjectName(in, oh->name); + yaffs_set_obj_name_from_oh(in, oh); - if (in->variantType == YAFFS_OBJECT_TYPE_SYMLINK) { - in->variant.symLinkVariant.alias = - yaffs_CloneString(oh->alias); - if (!in->variant.symLinkVariant.alias) + if (in->variant_type == YAFFS_OBJECT_TYPE_SYMLINK) { + in->variant.symlink_variant.alias = + yaffs_clone_str(oh->alias); + if (!in->variant.symlink_variant.alias) alloc_failed = 1; /* Not returned to caller */ } - 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; - __u32 sequenceNumber; - yaffs_ObjectHeader *oh; - yaffs_Object *in; - yaffs_Object *parent; - int nBlocks = dev->internalEndBlock - dev->internalStartBlock + 1; - int itsUnlinked; - __u8 *chunkData; - - int fileSize; - int isShrink; - int foundChunksInBlock; - int equivalentObjectId; - int alloc_failed = 0; - - - yaffs_BlockIndex *blockIndex = NULL; - int altBlockIndex = 0; - - if (!dev->isYaffs2) { - 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; - } - - dev->blocksInCheckpoint = 0; - - 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; - if (bi->sequenceNumber == YAFFS_SEQUENCE_BAD_BLOCK) - bi->blockState = state = YAFFS_BLOCK_STATE_DEAD; - - T(YAFFS_TRACE_SCAN_DEBUG, - (TSTR("Block scanning block %d state %d seq %d" TENDSTR), blk, - state, sequenceNumber)); - - - if (state == YAFFS_BLOCK_STATE_CHECKPOINT) { - dev->blocksInCheckpoint++; - - } 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 (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 { - /* 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. */ - yaffs_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 - - 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; !alloc_failed && 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; - !alloc_failed && 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; ??? TODO */ - bi->gcPrioritise = 1; - - T(YAFFS_TRACE_ALWAYS, - (TSTR("Partially written block %d detected" TENDSTR), - blk)); - } - } - } - - dev->nFreeChunks++; - - } else if (tags.eccResult == YAFFS_ECC_RESULT_UNFIXED) { - T(YAFFS_TRACE_SCAN, - (TSTR(" Unfixed ECC in chunk(%d:%d), chunk ignored"TENDSTR), - blk, c)); - - dev->nFreeChunks++; - - } else if (tags.chunkId > 0) { - /* chunkId > 0 so it is a data chunk... */ - unsigned int endpos; - __u32 chunkBase = - (tags.chunkId - 1) * dev->nDataBytesPerChunk; - - foundChunksInBlock = 1; - - - yaffs_SetChunkBit(dev, blk, c); - bi->pagesInUse++; - - in = yaffs_FindOrCreateObjectByNumber(dev, - tags. - objectId, - YAFFS_OBJECT_TYPE_FILE); - if (!in) { - /* Out of memory */ - alloc_failed = 1; - } - - if (in && - in->variantType == YAFFS_OBJECT_TYPE_FILE - && chunkBase < - in->variant.fileVariant.shrinkSize) { - /* This has not been invalidated by a resize */ - if (!yaffs_PutChunkIntoFile(in, tags.chunkId, - chunk, -1)) { - alloc_failed = 1; - } - - /* File size is calculated by looking at the data chunks if we have not - * 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 if (in) { - /* 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) - alloc_failed = 1; - } - - 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 (dev->inbandTags) { - /* Fix up the header if they got corrupted by inband tags */ - oh->shadowsObject = oh->inbandShadowsObject; - oh->isShrink = oh->inbandIsShrink; - } - - if (!in) { - in = yaffs_FindOrCreateObjectByNumber(dev, tags.objectId, oh->type); - if (!in) - alloc_failed = 1; - } - - } - - 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)); - continue; - } - - 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; - - - 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 && in->variantType != - (oh ? oh->type : tags.extraObjectType)) - T(YAFFS_TRACE_ERROR, ( - TSTR("yaffs tragedy: Bad object type, " - TCONT("%d != %d, for object %d at chunk ") - TCONT("%d during scan") - TENDSTR), oh ? - oh->type : tags.extraObjectType, - in->variantType, tags.objectId, - chunk)); - - if (!in->valid && - (tags.objectId == YAFFS_OBJECTID_ROOT || - tags.objectId == - YAFFS_OBJECTID_LOSTNFOUND)) { - /* We only load some info, don't fiddle with directory structure */ - in->valid = 1; - - if (oh) { - 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->hdrChunk = chunk; - - } else if (!in->valid) { - /* we need to load this info */ - - in->valid = 1; - in->hdrChunk = 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; - - if (!parent) - alloc_failed = 1; - - /* directory stuff... - * hook up to parent - */ - - if (parent && parent->variantType == - YAFFS_OBJECT_TYPE_UNKNOWN) { - /* Set up as a directory */ - parent->variantType = - YAFFS_OBJECT_TYPE_DIRECTORY; - YINIT_LIST_HEAD(&parent->variant. - directoryVariant. - children); - } else if (!parent || parent->variantType != - YAFFS_OBJECT_TYPE_DIRECTORY) { - /* Hoosterman, another problem.... - * We're trying to use a non-directory as a directory - */ - - T(YAFFS_TRACE_ERROR, - (TSTR - ("yaffs tragedy: attempting to use non-directory as a directory in scan. Put in lost+found." - 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 ylist_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); - if (!in->variant.symLinkVariant.alias) - alloc_failed = 1; - } - break; - } - - } - - } - - } /* End of scanning for each chunk */ - - if (state == YAFFS_BLOCK_STATE_NEEDS_SCANNING) { - /* If we got this far while scanning, then the block is fully allocated. */ - state = YAFFS_BLOCK_STATE_FULL; - } - - bi->blockState = state; - - /* Now let's see if it was dirty */ - if (bi->pagesInUse == 0 && - !bi->hasShrinkHeader && - bi->blockState == YAFFS_BLOCK_STATE_FULL) { - yaffs_BlockBecameDirty(dev, blk); - } - + yaffs_release_temp_buffer(dev, chunkData, __LINE__); } - - 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); - - - yaffs_ReleaseTempBuffer(dev, chunkData, __LINE__); - - if (alloc_failed) - return YAFFS_FAIL; - - T(YAFFS_TRACE_SCAN, (TSTR("yaffs_ScanBackwards ends" TENDSTR))); - - return YAFFS_OK; } /*------------------------------ Directory Functions ----------------------------- */ -static void yaffs_VerifyObjectInDirectory(yaffs_Object *obj) +/* + *yaffs_update_parent() 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_update_dirty_dirs must be + * called periodically. + */ + +static void yaffs_update_parent(yaffs_obj_t *obj) { - struct ylist_head *lh; - yaffs_Object *listObj; - - int count = 0; - - if (!obj) { - T(YAFFS_TRACE_ALWAYS, (TSTR("No object to verify" TENDSTR))); - YBUG(); + yaffs_dev_t *dev; + if(!obj) return; - } - - if (yaffs_SkipVerification(obj->myDev)) - return; - - if (!obj->parent) { - T(YAFFS_TRACE_ALWAYS, (TSTR("Object does not have parent" TENDSTR))); - YBUG(); - return; - } - - if (obj->parent->variantType != YAFFS_OBJECT_TYPE_DIRECTORY) { - T(YAFFS_TRACE_ALWAYS, (TSTR("Parent is not directory" TENDSTR))); - YBUG(); - } - - /* Iterate through the objects in each hash entry */ +#ifndef CONFIG_YAFFS_WINCE - ylist_for_each(lh, &obj->parent->variant.directoryVariant.children) { - if (lh) { - listObj = ylist_entry(lh, yaffs_Object, siblings); - yaffs_VerifyObject(listObj); - if (obj == listObj) - count++; + dev = obj->my_dev; + obj->dirty = 1; + obj->yst_mtime = obj->yst_ctime = Y_CURRENT_TIME; + if(dev->param.defered_dir_update){ + struct ylist_head *link = &obj->variant.dir_variant.dirty; + + if(ylist_empty(link)){ + ylist_add(link,&dev->dirty_dirs); + T(YAFFS_TRACE_BACKGROUND, (TSTR("Added object %d to dirty directories" TENDSTR),obj->obj_id)); } - } - if (count != 1) { - T(YAFFS_TRACE_ALWAYS, (TSTR("Object in directory %d times" TENDSTR), count)); - YBUG(); - } + } else + yaffs_update_oh(obj, NULL, 0, 0, 0, NULL); +#endif } -static void yaffs_VerifyDirectory(yaffs_Object *directory) +void yaffs_update_dirty_dirs(yaffs_dev_t *dev) { - struct ylist_head *lh; - yaffs_Object *listObj; + struct ylist_head *link; + yaffs_obj_t *obj; + yaffs_dir_s *dS; + yaffs_obj_variant *oV; - if (!directory) { - YBUG(); - return; - } + T(YAFFS_TRACE_BACKGROUND, (TSTR("Update dirty directories" TENDSTR))); - if (yaffs_SkipFullVerification(directory->myDev)) - return; + while(!ylist_empty(&dev->dirty_dirs)){ + link = dev->dirty_dirs.next; + ylist_del_init(link); + + dS=ylist_entry(link,yaffs_dir_s,dirty); + oV = ylist_entry(dS,yaffs_obj_variant,dir_variant); + obj = ylist_entry(oV,yaffs_obj_t,variant); - if (directory->variantType != YAFFS_OBJECT_TYPE_DIRECTORY) { - T(YAFFS_TRACE_ALWAYS, (TSTR("Directory has wrong type: %d" TENDSTR), directory->variantType)); - YBUG(); - } - - /* Iterate through the objects in each hash entry */ + T(YAFFS_TRACE_BACKGROUND, (TSTR("Update directory %d" TENDSTR), obj->obj_id)); - ylist_for_each(lh, &directory->variant.directoryVariant.children) { - if (lh) { - listObj = ylist_entry(lh, yaffs_Object, siblings); - if (listObj->parent != directory) { - T(YAFFS_TRACE_ALWAYS, (TSTR("Object in directory list has wrong parent %p" TENDSTR), listObj->parent)); - YBUG(); - } - yaffs_VerifyObjectInDirectory(listObj); - } + if(obj->dirty) + yaffs_update_oh(obj, NULL, 0, 0, 0, NULL); } } - -static void yaffs_RemoveObjectFromDirectory(yaffs_Object *obj) +static void yaffs_remove_obj_from_dir(yaffs_obj_t *obj) { - yaffs_Device *dev = obj->myDev; - yaffs_Object *parent; + yaffs_dev_t *dev = obj->my_dev; + yaffs_obj_t *parent; - yaffs_VerifyObjectInDirectory(obj); + yaffs_verify_obj_in_dir(obj); parent = obj->parent; - yaffs_VerifyDirectory(parent); + yaffs_verify_dir(parent); - if (dev && dev->removeObjectCallback) - dev->removeObjectCallback(obj); + if (dev && dev->param.remove_obj_fn) + dev->param.remove_obj_fn(obj); ylist_del_init(&obj->siblings); obj->parent = NULL; - - yaffs_VerifyDirectory(parent); + + yaffs_verify_dir(parent); } - -static void yaffs_AddObjectToDirectory(yaffs_Object *directory, - yaffs_Object *obj) +void yaffs_add_obj_to_dir(yaffs_obj_t *directory, + yaffs_obj_t *obj) { if (!directory) { T(YAFFS_TRACE_ALWAYS, @@ -6699,7 +4495,7 @@ static void yaffs_AddObjectToDirectory(yaffs_Object *directory, YBUG(); return; } - if (directory->variantType != YAFFS_OBJECT_TYPE_DIRECTORY) { + if (directory->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) { T(YAFFS_TRACE_ALWAYS, (TSTR ("tragedy: Trying to add an object to a non-directory" @@ -6713,27 +4509,27 @@ static void yaffs_AddObjectToDirectory(yaffs_Object *directory, } - yaffs_VerifyDirectory(directory); + yaffs_verify_dir(directory); - yaffs_RemoveObjectFromDirectory(obj); + yaffs_remove_obj_from_dir(obj); /* Now add it */ - ylist_add(&obj->siblings, &directory->variant.directoryVariant.children); + ylist_add(&obj->siblings, &directory->variant.dir_variant.children); obj->parent = directory; - if (directory == obj->myDev->unlinkedDir - || directory == obj->myDev->deletedDir) { + if (directory == obj->my_dev->unlinked_dir + || directory == obj->my_dev->del_dir) { obj->unlinked = 1; - obj->myDev->nUnlinkedFiles++; - obj->renameAllowed = 0; + obj->my_dev->n_unlinked_files++; + obj->rename_allowed = 0; } - yaffs_VerifyDirectory(directory); - yaffs_VerifyObjectInDirectory(obj); + yaffs_verify_dir(directory); + yaffs_verify_obj_in_dir(obj); } -yaffs_Object *yaffs_FindObjectByName(yaffs_Object *directory, +yaffs_obj_t *yaffs_find_by_name(yaffs_obj_t *directory, const YCHAR *name) { int sum; @@ -6741,7 +4537,7 @@ yaffs_Object *yaffs_FindObjectByName(yaffs_Object *directory, struct ylist_head *i; YCHAR buffer[YAFFS_MAX_NAME_LENGTH + 1]; - yaffs_Object *l; + yaffs_obj_t *l; if (!name) return NULL; @@ -6749,39 +4545,39 @@ yaffs_Object *yaffs_FindObjectByName(yaffs_Object *directory, if (!directory) { T(YAFFS_TRACE_ALWAYS, (TSTR - ("tragedy: yaffs_FindObjectByName: null pointer directory" + ("tragedy: yaffs_find_by_name: null pointer directory" TENDSTR))); YBUG(); return NULL; } - if (directory->variantType != YAFFS_OBJECT_TYPE_DIRECTORY) { + if (directory->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) { T(YAFFS_TRACE_ALWAYS, (TSTR - ("tragedy: yaffs_FindObjectByName: non-directory" TENDSTR))); + ("tragedy: yaffs_find_by_name: non-directory" TENDSTR))); YBUG(); } - sum = yaffs_CalcNameSum(name); + sum = yaffs_calc_name_sum(name); - ylist_for_each(i, &directory->variant.directoryVariant.children) { + ylist_for_each(i, &directory->variant.dir_variant.children) { if (i) { - l = ylist_entry(i, yaffs_Object, siblings); + l = ylist_entry(i, yaffs_obj_t, siblings); if (l->parent != directory) YBUG(); - yaffs_CheckObjectDetailsLoaded(l); + yaffs_check_obj_details_loaded(l); /* Special case for lost-n-found */ - if (l->objectId == YAFFS_OBJECTID_LOSTNFOUND) { + if (l->obj_id == YAFFS_OBJECTID_LOSTNFOUND) { if (yaffs_strcmp(name, YAFFS_LOSTNFOUND_NAME) == 0) return l; - } else if (yaffs_SumCompare(l->sum, sum) || l->hdrChunk <= 0) { + } else if (yaffs_sum_cmp(l->sum, sum) || l->hdr_chunk <= 0) { /* LostnFound chunk called Objxxx * Do a real check */ - yaffs_GetObjectName(l, buffer, - YAFFS_MAX_NAME_LENGTH); + yaffs_get_obj_name(l, buffer, + YAFFS_MAX_NAME_LENGTH + 1); if (yaffs_strncmp(name, buffer, YAFFS_MAX_NAME_LENGTH) == 0) return l; } @@ -6793,31 +4589,31 @@ yaffs_Object *yaffs_FindObjectByName(yaffs_Object *directory, #if 0 -int yaffs_ApplyToDirectoryChildren(yaffs_Object *theDir, - int (*fn) (yaffs_Object *)) +int yaffs_ApplyToDirectoryChildren(yaffs_obj_t *the_dir, + int (*fn) (yaffs_obj_t *)) { struct ylist_head *i; - yaffs_Object *l; + yaffs_obj_t *l; - if (!theDir) { + if (!the_dir) { T(YAFFS_TRACE_ALWAYS, (TSTR - ("tragedy: yaffs_FindObjectByName: null pointer directory" + ("tragedy: yaffs_find_by_name: null pointer directory" TENDSTR))); YBUG(); return YAFFS_FAIL; } - if (theDir->variantType != YAFFS_OBJECT_TYPE_DIRECTORY) { + if (the_dir->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) { T(YAFFS_TRACE_ALWAYS, (TSTR - ("tragedy: yaffs_FindObjectByName: non-directory" TENDSTR))); + ("tragedy: yaffs_find_by_name: non-directory" TENDSTR))); YBUG(); return YAFFS_FAIL; } - ylist_for_each(i, &theDir->variant.directoryVariant.children) { + ylist_for_each(i, &the_dir->variant.dir_variant.children) { if (i) { - l = ylist_entry(i, yaffs_Object, siblings); + l = ylist_entry(i, yaffs_obj_t, siblings); if (l && !fn(l)) return YAFFS_FAIL; } @@ -6832,82 +4628,175 @@ int yaffs_ApplyToDirectoryChildren(yaffs_Object *theDir, * actual object. */ -yaffs_Object *yaffs_GetEquivalentObject(yaffs_Object *obj) +yaffs_obj_t *yaffs_get_equivalent_obj(yaffs_obj_t *obj) { - if (obj && obj->variantType == YAFFS_OBJECT_TYPE_HARDLINK) { + if (obj && obj->variant_type == YAFFS_OBJECT_TYPE_HARDLINK) { /* We want the object id of the equivalent object, not this one */ - obj = obj->variant.hardLinkVariant.equivalentObject; - yaffs_CheckObjectDetailsLoaded(obj); + obj = obj->variant.hardlink_variant.equiv_obj; + yaffs_check_obj_details_loaded(obj); } return obj; } -int yaffs_GetObjectName(yaffs_Object *obj, YCHAR *name, int buffSize) -{ - memset(name, 0, buffSize * sizeof(YCHAR)); - - yaffs_CheckObjectDetailsLoaded(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]. - if (obj->objectId == YAFFS_OBJECTID_LOSTNFOUND) { - yaffs_strncpy(name, YAFFS_LOSTNFOUND_NAME, buffSize - 1); - } else if (obj->hdrChunk <= 0) { + */ +static void yaffs_fix_null_name(yaffs_obj_t * obj,YCHAR * name, int buffer_size) +{ + /* 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; + unsigned v = obj->obj_id; numString[19] = 0; - while (v > 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); + yaffs_strcat(locName,x); + yaffs_strncpy(name, locName, buffer_size - 1); + } +} + +static void yaffs_load_name_from_oh(yaffs_dev_t *dev,YCHAR *name, const YCHAR *ohName, int bufferSize) +{ +#ifdef CONFIG_YAFFS_AUTO_UNICODE + if(dev->param.auto_unicode){ + 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_load_oh_from_name(yaffs_dev_t *dev, YCHAR *ohName, const YCHAR *name) +{ +#ifdef CONFIG_YAFFS_AUTO_UNICODE + + int isAscii; + YCHAR *w; + + if(dev->param.auto_unicode){ + 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); + +} + +int yaffs_get_obj_name(yaffs_obj_t * obj, YCHAR * name, int buffer_size) +{ + memset(name, 0, buffer_size * sizeof(YCHAR)); + + yaffs_check_obj_details_loaded(obj); + + if (obj->obj_id == YAFFS_OBJECTID_LOSTNFOUND) { + yaffs_strncpy(name, YAFFS_LOSTNFOUND_NAME, buffer_size - 1); + } #ifdef CONFIG_YAFFS_SHORT_NAMES_IN_RAM - else if (obj->shortName[0]) - yaffs_strcpy(name, obj->shortName); + else if (obj->short_name[0]) { + yaffs_strcpy(name, obj->short_name); + } #endif - else { + else if(obj->hdr_chunk > 0) { int result; - __u8 *buffer = yaffs_GetTempBuffer(obj->myDev, __LINE__); + __u8 *buffer = yaffs_get_temp_buffer(obj->my_dev, __LINE__); - yaffs_ObjectHeader *oh = (yaffs_ObjectHeader *) buffer; + yaffs_obj_header *oh = (yaffs_obj_header *) buffer; - memset(buffer, 0, obj->myDev->nDataBytesPerChunk); + memset(buffer, 0, obj->my_dev->data_bytes_per_chunk); - if (obj->hdrChunk > 0) { - result = yaffs_ReadChunkWithTagsFromNAND(obj->myDev, - obj->hdrChunk, buffer, + if (obj->hdr_chunk > 0) { + result = yaffs_rd_chunk_tags_nand(obj->my_dev, + obj->hdr_chunk, buffer, NULL); } - yaffs_strncpy(name, oh->name, buffSize - 1); + yaffs_load_name_from_oh(obj->my_dev,name,oh->name,buffer_size); - yaffs_ReleaseTempBuffer(obj->myDev, buffer, __LINE__); + yaffs_release_temp_buffer(obj->my_dev, buffer, __LINE__); } - return yaffs_strlen(name); + yaffs_fix_null_name(obj,name,buffer_size); + + return yaffs_strnlen(name,YAFFS_MAX_NAME_LENGTH); } -int yaffs_GetObjectFileLength(yaffs_Object *obj) + +int yaffs_get_obj_length(yaffs_obj_t *obj) { /* Dereference any hard linking */ - obj = yaffs_GetEquivalentObject(obj); + obj = yaffs_get_equivalent_obj(obj); - 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); - else { + if (obj->variant_type == YAFFS_OBJECT_TYPE_FILE) + return obj->variant.file_variant.file_size; + if (obj->variant_type == YAFFS_OBJECT_TYPE_SYMLINK){ + if(!obj->variant.symlink_variant.alias) + return 0; + return yaffs_strnlen(obj->variant.symlink_variant.alias,YAFFS_MAX_ALIAS_LENGTH); + } else { /* Only a directory should drop through to here */ - return obj->myDev->nDataBytesPerChunk; + return obj->my_dev->data_bytes_per_chunk; } } -int yaffs_GetObjectLinkCount(yaffs_Object *obj) +int yaffs_get_obj_link_count(yaffs_obj_t *obj) { int count = 0; struct ylist_head *i; @@ -6915,24 +4804,24 @@ int yaffs_GetObjectLinkCount(yaffs_Object *obj) if (!obj->unlinked) count++; /* the object itself */ - ylist_for_each(i, &obj->hardLinks) + ylist_for_each(i, &obj->hard_links) count++; /* add the hard links; */ return count; } -int yaffs_GetObjectInode(yaffs_Object *obj) +int yaffs_get_obj_inode(yaffs_obj_t *obj) { - obj = yaffs_GetEquivalentObject(obj); + obj = yaffs_get_equivalent_obj(obj); - return obj->objectId; + return obj->obj_id; } -unsigned yaffs_GetObjectType(yaffs_Object *obj) +unsigned yaffs_get_obj_type(yaffs_obj_t *obj) { - obj = yaffs_GetEquivalentObject(obj); + obj = yaffs_get_equivalent_obj(obj); - switch (obj->variantType) { + switch (obj->variant_type) { case YAFFS_OBJECT_TYPE_FILE: return DT_REG; break; @@ -6960,18 +4849,18 @@ unsigned yaffs_GetObjectType(yaffs_Object *obj) } } -YCHAR *yaffs_GetSymlinkAlias(yaffs_Object *obj) +YCHAR *yaffs_get_symlink_alias(yaffs_obj_t *obj) { - obj = yaffs_GetEquivalentObject(obj); - if (obj->variantType == YAFFS_OBJECT_TYPE_SYMLINK) - return yaffs_CloneString(obj->variant.symLinkVariant.alias); + obj = yaffs_get_equivalent_obj(obj); + if (obj->variant_type == YAFFS_OBJECT_TYPE_SYMLINK) + return yaffs_clone_str(obj->variant.symlink_variant.alias); else - return yaffs_CloneString(_Y("")); + return yaffs_clone_str(_Y("")); } #ifndef CONFIG_YAFFS_WINCE -int yaffs_SetAttributes(yaffs_Object *obj, struct iattr *attr) +int yaffs_set_attribs(yaffs_obj_t *obj, struct iattr *attr) { unsigned int valid = attr->ia_valid; @@ -6990,14 +4879,14 @@ int yaffs_SetAttributes(yaffs_Object *obj, struct iattr *attr) obj->yst_mtime = Y_TIME_CONVERT(attr->ia_mtime); if (valid & ATTR_SIZE) - yaffs_ResizeFile(obj, attr->ia_size); + yaffs_resize_file(obj, attr->ia_size); - yaffs_UpdateObjectHeader(obj, NULL, 1, 0, 0); + yaffs_update_oh(obj, NULL, 1, 0, 0, NULL); return YAFFS_OK; } -int yaffs_GetAttributes(yaffs_Object *obj, struct iattr *attr) +int yaffs_get_attribs(yaffs_obj_t *obj, struct iattr *attr) { unsigned int valid = 0; @@ -7015,7 +4904,7 @@ int yaffs_GetAttributes(yaffs_Object *obj, struct iattr *attr) Y_TIME_CONVERT(attr->ia_mtime) = obj->yst_mtime; valid |= ATTR_MTIME; - attr->ia_size = yaffs_GetFileSize(obj); + attr->ia_size = yaffs_get_file_size(obj); valid |= ATTR_SIZE; attr->ia_valid = valid; @@ -7025,20 +4914,137 @@ int yaffs_GetAttributes(yaffs_Object *obj, struct iattr *attr) #endif + +static int yaffs_do_xattrib_mod(yaffs_obj_t *obj, int set, const YCHAR *name, const void *value, int size, int flags) +{ + yaffs_xattr_mod xmod; + + int result; + + xmod.set = set; + xmod.name = name; + xmod.data = value; + xmod.size = size; + xmod.flags = flags; + xmod.result = -ENOSPC; + + result = yaffs_update_oh(obj, NULL, 0, 0, 0, &xmod); + + if(result > 0) + return xmod.result; + else + return -ENOSPC; +} + +static int yaffs_apply_xattrib_mod(yaffs_obj_t *obj, char *buffer, yaffs_xattr_mod *xmod) +{ + int retval = 0; + int x_offs = sizeof(yaffs_obj_header); + yaffs_dev_t *dev = obj->my_dev; + int x_size = dev->data_bytes_per_chunk - sizeof(yaffs_obj_header); + + 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->has_xattr = nval_hasvalues(x_buffer, x_size); + obj->xattr_known = 1; + + xmod->result = retval; + + return retval; +} + +static int yaffs_do_xattrib_fetch(yaffs_obj_t *obj, const YCHAR *name, void *value, int size) +{ + char *buffer = NULL; + int result; + yaffs_ext_tags tags; + yaffs_dev_t *dev = obj->my_dev; + int x_offs = sizeof(yaffs_obj_header); + int x_size = dev->data_bytes_per_chunk - sizeof(yaffs_obj_header); + + char * x_buffer; + + int retval = 0; + + if(obj->hdr_chunk < 1) + return -ENODATA; + + /* If we know that the object has no xattribs then don't do all the + * reading and parsing. + */ + if(obj->xattr_known && !obj->has_xattr){ + if(name) + return -ENODATA; + else + return 0; + } + + buffer = (char *) yaffs_get_temp_buffer(dev, __LINE__); + if(!buffer) + return -ENOMEM; + + result = yaffs_rd_chunk_tags_nand(dev,obj->hdr_chunk, (__u8 *)buffer, &tags); + + if(result != YAFFS_OK) + retval = -ENOENT; + else{ + x_buffer = buffer + x_offs; + + if (!obj->xattr_known){ + obj->has_xattr = nval_hasvalues(x_buffer, x_size); + obj->xattr_known = 1; + } + + if(name) + retval = nval_get(x_buffer, x_size, name, value, size); + else + retval = nval_list(x_buffer, x_size, value,size); + } + yaffs_release_temp_buffer(dev,(__u8 *)buffer,__LINE__); + return retval; +} + +int yaffs_set_xattrib(yaffs_obj_t *obj, const YCHAR *name, const void * value, int size, int flags) +{ + return yaffs_do_xattrib_mod(obj, 1, name, value, size, flags); +} + +int yaffs_remove_xattrib(yaffs_obj_t *obj, const YCHAR *name) +{ + return yaffs_do_xattrib_mod(obj, 0, name, NULL, 0, 0); +} + +int yaffs_get_xattrib(yaffs_obj_t *obj, const YCHAR *name, void *value, int size) +{ + return yaffs_do_xattrib_fetch(obj, name, value, size); +} + +int yaffs_list_xattrib(yaffs_obj_t *obj, char *buffer, int size) +{ + return yaffs_do_xattrib_fetch(obj, NULL, buffer,size); +} + + + #if 0 -int yaffs_DumpObject(yaffs_Object *obj) +int yaffs_dump_obj(yaffs_obj_t *obj) { YCHAR name[257]; - yaffs_GetObjectName(obj, name, 256); + yaffs_get_obj_name(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->hdrChunk, - yaffs_GetObjectType(obj), yaffs_GetObjectFileLength(obj))); + TENDSTR), obj->obj_id, yaffs_get_obj_inode(obj), name, + obj->dirty, obj->valid, obj->serial, obj->sum, obj->hdr_chunk, + yaffs_get_obj_type(obj), yaffs_get_obj_length(obj))); return YAFFS_OK; } @@ -7046,72 +5052,74 @@ int yaffs_DumpObject(yaffs_Object *obj) /*---------------------------- Initialisation code -------------------------------------- */ -static int yaffs_CheckDevFunctions(const yaffs_Device *dev) +static int yaffs_cehck_dev_fns(const yaffs_dev_t *dev) { /* Common functions, gotta have */ - if (!dev->eraseBlockInNAND || !dev->initialiseNAND) + if (!dev->param.erase_fn || !dev->param.initialise_flash_fn) 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.write_chunk_tags_fn && + dev->param.read_chunk_tags_fn && + !dev->param.write_chunk_fn && + !dev->param.read_chunk_fn && + dev->param.bad_block_fn && + dev->param.query_block_fn) 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.is_yaffs2 && + !dev->param.write_chunk_tags_fn && + !dev->param.read_chunk_tags_fn && + dev->param.write_chunk_fn && + dev->param.read_chunk_fn && + !dev->param.bad_block_fn && + !dev->param.query_block_fn) return 1; - return 0; /* bad */ + return 0; /* bad */ } -static int yaffs_CreateInitialDirectories(yaffs_Device *dev) +static int yaffs_create_initial_dir(yaffs_dev_t *dev) { /* Initialise the unlinked, deleted, root and lost and found directories */ - dev->lostNFoundDir = dev->rootDir = NULL; - dev->unlinkedDir = dev->deletedDir = NULL; + dev->lost_n_found = dev->root_dir = NULL; + dev->unlinked_dir = dev->del_dir = NULL; - dev->unlinkedDir = - yaffs_CreateFakeDirectory(dev, YAFFS_OBJECTID_UNLINKED, S_IFDIR); + dev->unlinked_dir = + yaffs_create_fake_dir(dev, YAFFS_OBJECTID_UNLINKED, S_IFDIR); - dev->deletedDir = - yaffs_CreateFakeDirectory(dev, YAFFS_OBJECTID_DELETED, S_IFDIR); + dev->del_dir = + yaffs_create_fake_dir(dev, YAFFS_OBJECTID_DELETED, S_IFDIR); - dev->rootDir = - yaffs_CreateFakeDirectory(dev, YAFFS_OBJECTID_ROOT, + dev->root_dir = + yaffs_create_fake_dir(dev, YAFFS_OBJECTID_ROOT, YAFFS_ROOT_MODE | S_IFDIR); - dev->lostNFoundDir = - yaffs_CreateFakeDirectory(dev, YAFFS_OBJECTID_LOSTNFOUND, + dev->lost_n_found = + yaffs_create_fake_dir(dev, YAFFS_OBJECTID_LOSTNFOUND, YAFFS_LOSTNFOUND_MODE | S_IFDIR); - if (dev->lostNFoundDir && dev->rootDir && dev->unlinkedDir && dev->deletedDir) { - yaffs_AddObjectToDirectory(dev->rootDir, dev->lostNFoundDir); + if (dev->lost_n_found && dev->root_dir && dev->unlinked_dir && dev->del_dir) { + yaffs_add_obj_to_dir(dev->root_dir, dev->lost_n_found); return YAFFS_OK; } return YAFFS_FAIL; } -int yaffs_GutsInitialise(yaffs_Device *dev) +int yaffs_guts_initialise(yaffs_dev_t *dev) { int init_failed = 0; unsigned x; int bits; - T(YAFFS_TRACE_TRACING, (TSTR("yaffs: yaffs_GutsInitialise()" TENDSTR))); + T(YAFFS_TRACE_TRACING, (TSTR("yaffs: yaffs_guts_initialise()" TENDSTR))); /* Check stuff that must be set */ @@ -7120,52 +5128,52 @@ int yaffs_GutsInitialise(yaffs_Device *dev) return YAFFS_FAIL; } - dev->internalStartBlock = dev->startBlock; - dev->internalEndBlock = dev->endBlock; - dev->blockOffset = 0; - dev->chunkOffset = 0; - dev->nFreeChunks = 0; + dev->internal_start_block = dev->param.start_block; + dev->internal_end_block = dev->param.end_block; + dev->block_offset = 0; + dev->chunk_offset = 0; + dev->n_free_chunks = 0; - dev->gcBlock = -1; + dev->gc_block = 0; - if (dev->startBlock == 0) { - dev->internalStartBlock = dev->startBlock + 1; - dev->internalEndBlock = dev->endBlock + 1; - dev->blockOffset = 1; - dev->chunkOffset = dev->nChunksPerBlock; + if (dev->param.start_block == 0) { + dev->internal_start_block = dev->param.start_block + 1; + dev->internal_end_block = dev->param.end_block + 1; + dev->block_offset = 1; + dev->chunk_offset = dev->param.chunks_per_block; } /* Check geometry parameters. */ - if ((!dev->inbandTags && dev->isYaffs2 && dev->totalBytesPerChunk < 1024) || - (!dev->isYaffs2 && dev->totalBytesPerChunk < 512) || - (dev->inbandTags && !dev->isYaffs2) || - 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.inband_tags && dev->param.is_yaffs2 && dev->param.total_bytes_per_chunk < 1024) || + (!dev->param.is_yaffs2 && dev->param.total_bytes_per_chunk < 512) || + (dev->param.inband_tags && !dev->param.is_yaffs2) || + dev->param.chunks_per_block < 2 || + dev->param.n_reserved_blocks < 2 || + dev->internal_start_block <= 0 || + dev->internal_end_block <= 0 || + dev->internal_end_block <= (dev->internal_start_block + dev->param.n_reserved_blocks + 2)) { /* otherwise it is too small */ T(YAFFS_TRACE_ALWAYS, (TSTR - ("yaffs: NAND geometry problems: chunk size %d, type is yaffs%s, inbandTags %d " - TENDSTR), dev->totalBytesPerChunk, dev->isYaffs2 ? "2" : "", dev->inbandTags)); + ("yaffs: NAND geometry problems: chunk size %d, type is yaffs%s, inband_tags %d " + TENDSTR), dev->param.total_bytes_per_chunk, dev->param.is_yaffs2 ? "2" : "", dev->param.inband_tags)); return YAFFS_FAIL; } - if (yaffs_InitialiseNAND(dev) != YAFFS_OK) { + if (yaffs_init_nand(dev) != YAFFS_OK) { T(YAFFS_TRACE_ALWAYS, (TSTR("yaffs: InitialiseNAND failed" TENDSTR))); return YAFFS_FAIL; } /* Sort out space for inband tags, if required */ - if (dev->inbandTags) - dev->nDataBytesPerChunk = dev->totalBytesPerChunk - sizeof(yaffs_PackedTags2TagsPart); + if (dev->param.inband_tags) + dev->data_bytes_per_chunk = dev->param.total_bytes_per_chunk - sizeof(yaffs_PackedTags2TagsPart); else - dev->nDataBytesPerChunk = dev->totalBytesPerChunk; + dev->data_bytes_per_chunk = dev->param.total_bytes_per_chunk; /* Got the right mix of functions? */ - if (!yaffs_CheckDevFunctions(dev)) { + if (!yaffs_cehck_dev_fns(dev)) { /* Function missing */ T(YAFFS_TRACE_ALWAYS, (TSTR @@ -7175,13 +5183,13 @@ int yaffs_GutsInitialise(yaffs_Device *dev) } /* This is really a compilation check. */ - if (!yaffs_CheckStructures()) { + if (!yaffs_check_structures()) { T(YAFFS_TRACE_ALWAYS, - (TSTR("yaffs_CheckStructures failed\n" TENDSTR))); + (TSTR("yaffs_check_structures failed\n" TENDSTR))); return YAFFS_FAIL; } - if (dev->isMounted) { + if (dev->is_mounted) { T(YAFFS_TRACE_ALWAYS, (TSTR("yaffs: device already mounted\n" TENDSTR))); return YAFFS_FAIL; @@ -7189,59 +5197,62 @@ int yaffs_GutsInitialise(yaffs_Device *dev) /* Finished with most checks. One or two more checks happen later on too. */ - dev->isMounted = 1; + dev->is_mounted = 1; /* OK now calculate a few things for the device */ /* * Calculate all the chunk size manipulation numbers: */ - 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; + x = dev->data_bytes_per_chunk; + /* We always use dev->chunk_shift and dev->chunk_div */ + dev->chunk_shift = Shifts(x); + x >>= dev->chunk_shift; + dev->chunk_div = x; + /* We only use chunk mask if chunk_div is 1 */ + dev->chunk_mask = (1<<dev->chunk_shift) - 1; /* - * Calculate chunkGroupBits. - * We need to find the next power of 2 > than internalEndBlock + * Calculate chunk_grp_bits. + * We need to find the next power of 2 > than internal_end_block */ - x = dev->nChunksPerBlock * (dev->internalEndBlock + 1); + x = dev->param.chunks_per_block * (dev->internal_end_block + 1); bits = ShiftsGE(x); /* Set up tnode width if wide tnodes are enabled. */ - if (!dev->wideTnodesDisabled) { + if (!dev->param.wide_tnodes_disabled) { /* bits must be even so that we end up with 32-bit words */ if (bits & 1) bits++; if (bits < 16) - dev->tnodeWidth = 16; + dev->tnode_width = 16; else - dev->tnodeWidth = bits; + dev->tnode_width = bits; } else - dev->tnodeWidth = 16; + dev->tnode_width = 16; - dev->tnodeMask = (1<<dev->tnodeWidth)-1; + dev->tnode_mask = (1<<dev->tnode_width)-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 + * to figure out chunk shift and chunk_grp_size */ - if (bits <= dev->tnodeWidth) - dev->chunkGroupBits = 0; + if (bits <= dev->tnode_width) + dev->chunk_grp_bits = 0; else - dev->chunkGroupBits = bits - dev->tnodeWidth; + dev->chunk_grp_bits = bits - dev->tnode_width; + dev->tnode_size = (dev->tnode_width * YAFFS_NTNODES_LEVEL0)/8; + if(dev->tnode_size < sizeof(yaffs_tnode_t)) + dev->tnode_size = sizeof(yaffs_tnode_t); - dev->chunkGroupSize = 1 << dev->chunkGroupBits; + dev->chunk_grp_size = 1 << dev->chunk_grp_bits; - if (dev->nChunksPerBlock < dev->chunkGroupSize) { + if (dev->param.chunks_per_block < dev->chunk_grp_size) { /* 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". @@ -7255,85 +5266,89 @@ int yaffs_GutsInitialise(yaffs_Device *dev) /* OK, we've finished verifying the device, lets continue with initialisation */ /* More device initialisation */ - dev->garbageCollections = 0; - dev->passiveGarbageCollections = 0; - dev->currentDirtyChecker = 0; - dev->bufferedBlock = -1; - dev->doingBufferedBlockRewrite = 0; - dev->nDeletedFiles = 0; - dev->nBackgroundDeletions = 0; - dev->nUnlinkedFiles = 0; - dev->eccFixed = 0; - dev->eccUnfixed = 0; - dev->tagsEccFixed = 0; - dev->tagsEccUnfixed = 0; - dev->nErasureFailures = 0; - dev->nErasedBlocks = 0; - dev->isDoingGC = 0; - dev->hasPendingPrioritisedGCs = 1; /* Assume the worst for now, will get fixed on first GC */ + dev->all_gcs = 0; + dev->passive_gc_count = 0; + dev->oldest_dirty_gc_count = 0; + dev->bg_gcs = 0; + dev->gc_block_finder = 0; + dev->buffered_block = -1; + dev->doing_buffered_block_rewrite = 0; + dev->n_deleted_files = 0; + dev->n_bg_deletions = 0; + dev->n_unlinked_files = 0; + dev->n_ecc_fixed = 0; + dev->n_ecc_unfixed = 0; + dev->n_tags_ecc_fixed = 0; + dev->n_tags_ecc_unfixed = 0; + dev->n_erase_failures = 0; + dev->n_erased_blocks = 0; + dev->gc_disable= 0; + dev->has_pending_prioritised_gc = 1; /* Assume the worst for now, will get fixed on first GC */ + YINIT_LIST_HEAD(&dev->dirty_dirs); + dev->oldest_dirty_seq = 0; + dev->oldest_dirty_block = 0; /* Initialise temporary buffers and caches. */ - if (!yaffs_InitialiseTempBuffers(dev)) + if (!yaffs_init_tmp_buffers(dev)) init_failed = 1; - dev->srCache = NULL; - dev->gcCleanupList = NULL; + dev->cache = NULL; + dev->gc_cleanup_list = NULL; if (!init_failed && - dev->nShortOpCaches > 0) { + dev->param.n_caches > 0) { int i; void *buf; - int srCacheBytes = dev->nShortOpCaches * sizeof(yaffs_ChunkCache); + int cacheBytes = dev->param.n_caches * sizeof(yaffs_cache_t); - if (dev->nShortOpCaches > YAFFS_MAX_SHORT_OP_CACHES) - dev->nShortOpCaches = YAFFS_MAX_SHORT_OP_CACHES; + if (dev->param.n_caches > YAFFS_MAX_SHORT_OP_CACHES) + dev->param.n_caches = YAFFS_MAX_SHORT_OP_CACHES; - dev->srCache = YMALLOC(srCacheBytes); + dev->cache = YMALLOC(cacheBytes); - buf = (__u8 *) dev->srCache; + buf = (__u8 *) dev->cache; - if (dev->srCache) - memset(dev->srCache, 0, srCacheBytes); + if (dev->cache) + memset(dev->cache, 0, cacheBytes); - for (i = 0; i < dev->nShortOpCaches && buf; i++) { - dev->srCache[i].object = NULL; - dev->srCache[i].lastUse = 0; - dev->srCache[i].dirty = 0; - dev->srCache[i].data = buf = YMALLOC_DMA(dev->totalBytesPerChunk); + for (i = 0; i < dev->param.n_caches && buf; i++) { + dev->cache[i].object = NULL; + dev->cache[i].last_use = 0; + dev->cache[i].dirty = 0; + dev->cache[i].data = buf = YMALLOC_DMA(dev->param.total_bytes_per_chunk); } if (!buf) init_failed = 1; - dev->srLastUse = 0; + dev->cache_last_use = 0; } - dev->cacheHits = 0; + dev->cache_hits = 0; if (!init_failed) { - dev->gcCleanupList = YMALLOC(dev->nChunksPerBlock * sizeof(__u32)); - if (!dev->gcCleanupList) + dev->gc_cleanup_list = YMALLOC(dev->param.chunks_per_block * sizeof(__u32)); + if (!dev->gc_cleanup_list) init_failed = 1; } - if (dev->isYaffs2) - dev->useHeaderFileSize = 1; + if (dev->param.is_yaffs2) + dev->param.use_header_file_size = 1; - if (!init_failed && !yaffs_InitialiseBlocks(dev)) + if (!init_failed && !yaffs_init_blocks(dev)) init_failed = 1; - yaffs_InitialiseTnodes(dev); - yaffs_InitialiseObjects(dev); + yaffs_init_tnodes_and_objs(dev); - if (!init_failed && !yaffs_CreateInitialDirectories(dev)) + if (!init_failed && !yaffs_create_initial_dir(dev)) init_failed = 1; if (!init_failed) { /* Now scan the flash. */ - if (dev->isYaffs2) { - if (yaffs_CheckpointRestore(dev)) { - yaffs_CheckObjectDetailsLoaded(dev->rootDir); + if (dev->param.is_yaffs2) { + if (yaffs2_checkpt_restore(dev)) { + yaffs_check_obj_details_loaded(dev->root_dir); T(YAFFS_TRACE_ALWAYS, (TSTR("yaffs: restored from checkpoint" TENDSTR))); } else { @@ -7341,128 +5356,129 @@ int yaffs_GutsInitialise(yaffs_Device *dev) /* Clean up the mess caused by an aborted checkpoint load * and scan backwards. */ - yaffs_DeinitialiseBlocks(dev); - yaffs_DeinitialiseTnodes(dev); - yaffs_DeinitialiseObjects(dev); + yaffs_deinit_blocks(dev); + yaffs_deinit_tnodes_and_objs(dev); - dev->nErasedBlocks = 0; - dev->nFreeChunks = 0; - dev->allocationBlock = -1; - dev->allocationPage = -1; - dev->nDeletedFiles = 0; - dev->nUnlinkedFiles = 0; - dev->nBackgroundDeletions = 0; - dev->oldestDirtySequence = 0; + dev->n_erased_blocks = 0; + dev->n_free_chunks = 0; + dev->alloc_block = -1; + dev->alloc_page = -1; + dev->n_deleted_files = 0; + dev->n_unlinked_files = 0; + dev->n_bg_deletions = 0; - if (!init_failed && !yaffs_InitialiseBlocks(dev)) + if (!init_failed && !yaffs_init_blocks(dev)) init_failed = 1; - yaffs_InitialiseTnodes(dev); - yaffs_InitialiseObjects(dev); + yaffs_init_tnodes_and_objs(dev); - if (!init_failed && !yaffs_CreateInitialDirectories(dev)) + if (!init_failed && !yaffs_create_initial_dir(dev)) init_failed = 1; - if (!init_failed && !yaffs_ScanBackwards(dev)) + if (!init_failed && !yaffs2_scan_backwards(dev)) init_failed = 1; } - } else if (!yaffs_Scan(dev)) + } else if (!yaffs1_scan(dev)) init_failed = 1; - yaffs_StripDeletedObjects(dev); + yaffs_strip_deleted_objs(dev); + yaffs_fix_hanging_objs(dev); + if(dev->param.empty_lost_n_found) + yaffs_empty_l_n_f(dev); } if (init_failed) { /* Clean up the mess */ T(YAFFS_TRACE_TRACING, - (TSTR("yaffs: yaffs_GutsInitialise() aborted.\n" TENDSTR))); + (TSTR("yaffs: yaffs_guts_initialise() aborted.\n" TENDSTR))); - yaffs_Deinitialise(dev); + yaffs_deinitialise(dev); return YAFFS_FAIL; } /* Zero out stats */ - dev->nPageReads = 0; - dev->nPageWrites = 0; - dev->nBlockErasures = 0; - dev->nGCCopies = 0; - dev->nRetriedWrites = 0; + dev->n_page_reads = 0; + dev->n_page_writes = 0; + dev->n_erasures = 0; + dev->n_gc_copies = 0; + dev->n_retired_writes = 0; - dev->nRetiredBlocks = 0; + dev->n_retired_blocks = 0; - yaffs_VerifyFreeChunks(dev); - yaffs_VerifyBlocks(dev); + yaffs_verify_free_chunks(dev); + yaffs_verify_blocks(dev); + /* Clean up any aborted checkpoint data */ + if(!dev->is_checkpointed && dev->blocks_in_checkpt > 0) + yaffs2_checkpt_invalidate(dev); T(YAFFS_TRACE_TRACING, - (TSTR("yaffs: yaffs_GutsInitialise() done.\n" TENDSTR))); + (TSTR("yaffs: yaffs_guts_initialise() done.\n" TENDSTR))); return YAFFS_OK; } -void yaffs_Deinitialise(yaffs_Device *dev) +void yaffs_deinitialise(yaffs_dev_t *dev) { - if (dev->isMounted) { + if (dev->is_mounted) { int i; - yaffs_DeinitialiseBlocks(dev); - yaffs_DeinitialiseTnodes(dev); - yaffs_DeinitialiseObjects(dev); - if (dev->nShortOpCaches > 0 && - dev->srCache) { + yaffs_deinit_blocks(dev); + yaffs_deinit_tnodes_and_objs(dev); + if (dev->param.n_caches > 0 && + dev->cache) { - for (i = 0; i < dev->nShortOpCaches; i++) { - if (dev->srCache[i].data) - YFREE(dev->srCache[i].data); - dev->srCache[i].data = NULL; + for (i = 0; i < dev->param.n_caches; i++) { + if (dev->cache[i].data) + YFREE(dev->cache[i].data); + dev->cache[i].data = NULL; } - YFREE(dev->srCache); - dev->srCache = NULL; + YFREE(dev->cache); + dev->cache = NULL; } - YFREE(dev->gcCleanupList); + YFREE(dev->gc_cleanup_list); for (i = 0; i < YAFFS_N_TEMP_BUFFERS; i++) - YFREE(dev->tempBuffer[i].buffer); + YFREE(dev->temp_buffer[i].buffer); - dev->isMounted = 0; + dev->is_mounted = 0; - if (dev->deinitialiseNAND) - dev->deinitialiseNAND(dev); + if (dev->param.deinitialise_flash_fn) + dev->param.deinitialise_flash_fn(dev); } } -static int yaffs_CountFreeChunks(yaffs_Device *dev) +int yaffs_count_free_chunks(yaffs_dev_t *dev) { - int nFree; + int nFree=0; int b; - yaffs_BlockInfo *blk; + yaffs_block_info_t *blk; - for (nFree = 0, b = dev->internalStartBlock; b <= dev->internalEndBlock; - b++) { - blk = yaffs_GetBlockInfo(dev, b); - - switch (blk->blockState) { + blk = dev->block_info; + for (b = dev->internal_start_block; b <= dev->internal_end_block; b++) { + switch (blk->block_state) { 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 + - blk->softDeletions); + (dev->param.chunks_per_block - blk->pages_in_use + + blk->soft_del_pages); break; default: break; } + blk++; } return nFree; } -int yaffs_GetNumberOfFreeChunks(yaffs_Device *dev) +int yaffs_get_n_free_chunks(yaffs_dev_t *dev) { /* This is what we report to the outside world */ @@ -7472,30 +5488,28 @@ int yaffs_GetNumberOfFreeChunks(yaffs_Device *dev) int i; #if 1 - nFree = dev->nFreeChunks; + nFree = dev->n_free_chunks; #else - nFree = yaffs_CountFreeChunks(dev); + nFree = yaffs_count_free_chunks(dev); #endif - nFree += dev->nDeletedFiles; + nFree += dev->n_deleted_files; /* Now count the number of dirty chunks in the cache and subtract those */ - for (nDirtyCacheChunks = 0, i = 0; i < dev->nShortOpCaches; i++) { - if (dev->srCache[i].dirty) + for (nDirtyCacheChunks = 0, i = 0; i < dev->param.n_caches; i++) { + if (dev->cache[i].dirty) nDirtyCacheChunks++; } nFree -= nDirtyCacheChunks; - nFree -= ((dev->nReservedBlocks + 1) * dev->nChunksPerBlock); + nFree -= ((dev->param.n_reserved_blocks + 1) * dev->param.chunks_per_block); /* Now we figure out how much to reserve for the checkpoint and report that... */ - blocksForCheckpoint = yaffs_CalcCheckpointBlocksRequired(dev) - dev->blocksInCheckpoint; - if (blocksForCheckpoint < 0) - blocksForCheckpoint = 0; + blocksForCheckpoint = yaffs_calc_checkpt_blocks_required(dev); - nFree -= (blocksForCheckpoint * dev->nChunksPerBlock); + nFree -= (blocksForCheckpoint * dev->param.chunks_per_block); if (nFree < 0) nFree = 0; @@ -7504,49 +5518,27 @@ int yaffs_GetNumberOfFreeChunks(yaffs_Device *dev) } -static int yaffs_freeVerificationFailures; - -static void yaffs_VerifyFreeChunks(yaffs_Device *dev) -{ - int counted; - int difference; - - if (yaffs_SkipVerification(dev)) - return; - - counted = yaffs_CountFreeChunks(dev); - - 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) \ +#define yaffs_check_struct(structure, syze, name) \ do { \ if (sizeof(structure) != syze) { \ T(YAFFS_TRACE_ALWAYS, (TSTR("%s should be %d but is %d\n" TENDSTR),\ - name, syze, sizeof(structure))); \ + name, syze, (int) sizeof(structure))); \ return YAFFS_FAIL; \ } \ } while (0) -static int yaffs_CheckStructures(void) +static int yaffs_check_structures(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_check_struct(yaffs_tags_t,8,"yaffs_tags_t"); */ +/* yaffs_check_struct(yaffs_tags_union_t,8,"yaffs_tags_union_t"); */ +/* yaffs_check_struct(yaffs_spare,16,"yaffs_spare"); */ +/* yaffs_check_struct(yaffs_tnode_t, 2 * YAFFS_NTNODES_LEVEL0, "yaffs_tnode_t"); */ + #ifndef CONFIG_YAFFS_WINCE - yaffs_CheckStruct(yaffs_ObjectHeader, 512, "yaffs_ObjectHeader"); + yaffs_check_struct(yaffs_obj_header, 512, "yaffs_obj_header"); #endif return YAFFS_OK; } |