-#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; 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.... */
- for (c = dev->nChunksPerBlock - 1; c >= 0 &&
- (state == YAFFS_BLOCK_STATE_NEEDS_SCANNING ||
- state == YAFFS_BLOCK_STATE_ALLOCATING); c--) {
- /* Scan backwards...
- * Read the tags and decide what to do
- */
- chunk = blk * dev->nChunksPerBlock + c;
-
- yaffs_ReadChunkWithTagsFromNAND(dev, chunk, NULL,
- &tags);
-
- /* Let's have a good look at this chunk... */
-
- 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 */
- if (state ==
- YAFFS_BLOCK_STATE_NEEDS_SCANNING) {
- T(YAFFS_TRACE_SCAN,
- (TSTR
- (" Allocating from %d %d"
- TENDSTR), blk, c));
- }
- state = YAFFS_BLOCK_STATE_ALLOCATING;
- dev->allocationBlock = blk;
- dev->allocationPage = c;
- dev->allocationBlockFinder = blk;
- /* Set it to here to encourage the allocator to
- * go forth from here.
- */
-
- /* Yaffs2 sanity check:
- * This should be the one with the highest sequence number
- */
- if (dev->isYaffs2
- && (dev->sequenceNumber !=
- bi->sequenceNumber)) {
- T(YAFFS_TRACE_ALWAYS,
- (TSTR
- ("yaffs: Allocation block %d was not highest sequence "
- "id: block seq = %d, dev seq = %d"
- TENDSTR), blk,
- bi->sequenceNumber,
- dev->sequenceNumber));
- }
- }
-
- dev->nFreeChunks++;
- } else if (tags.chunkId > 0) {
- /* chunkId > 0 so it is a data chunk... */
- unsigned int endpos;
-
- __u32 chunkBase =
- (tags.chunkId - 1) * dev->nBytesPerChunk;
-
- yaffs_SetChunkBit(dev, blk, c);
- bi->pagesInUse++;
-
- in = yaffs_FindOrCreateObjectByNumber(dev,
- tags.
- objectId,
- YAFFS_OBJECT_TYPE_FILE);
- if (in->variantType == YAFFS_OBJECT_TYPE_FILE
- && chunkBase <
- in->variant.fileVariant.shrinkSize) {
- /* This has not been invalidated by a resize */
- yaffs_PutChunkIntoFile(in, tags.chunkId,
- chunk, -1);
-
- /* File size is calculated by looking at the data chunks if we have not
- * seen an object header yet. Stop this practice once we find an object header.
- */
- endpos =
- (tags.chunkId -
- 1) * dev->nBytesPerChunk +
- tags.byteCount;
-
- if (!in->valid && /* have not got an object header yet */
- in->variant.fileVariant.
- scannedFileSize < endpos) {
- in->variant.fileVariant.
- scannedFileSize = endpos;
- in->variant.fileVariant.
- fileSize =
- in->variant.fileVariant.
- scannedFileSize;
- }
-
- } else {
- /* This chunk has been invalidated by a resize, so delete */
- yaffs_DeleteChunk(dev, chunk, 1, __LINE__);
-
- }
- } else {
- /* chunkId == 0, so it is an ObjectHeader.
- * Thus, we read in the object header and make the object
- */
- yaffs_SetChunkBit(dev, blk, c);
- bi->pagesInUse++;
-
- oh = NULL;
- in = NULL;
-
- if (tags.extraHeaderInfoAvailable) {
- in = yaffs_FindOrCreateObjectByNumber
- (dev, tags.objectId,
- tags.extraObjectType);
- }
-
- if (!in ||
-#ifdef CONFIG_YAFFS_DISABLE_LAZY_LOAD
- !in->valid ||
-#endif
- tags.extraShadows ||
- (!in->valid &&
- (tags.objectId == YAFFS_OBJECTID_ROOT ||
- tags.objectId == YAFFS_OBJECTID_LOSTNFOUND))
- ) {
-
- /* If we don't have valid info then we need to read the chunk
- * TODO In future we can probably defer reading the chunk and
- * living with invalid data until needed.
- */
-
- yaffs_ReadChunkWithTagsFromNAND(dev,
- chunk,
- chunkData,
- NULL);
-
- oh = (yaffs_ObjectHeader *) chunkData;
-
- if (!in)
- in = yaffs_FindOrCreateObjectByNumber(dev, tags.objectId, oh->type);
-
- }
-
- if (!in) {
- /* TODO Hoosterman we have a problem! */
- T(YAFFS_TRACE_ERROR,
- (TSTR
- ("yaffs tragedy: Could not make object for object %d "
- "at chunk %d during scan"
- TENDSTR), tags.objectId, chunk));
-
- }
-
- if (in->valid) {
- /* We have already filled this one.
- * We have a duplicate that will be discarded, but
- * we first have to suck out resize info if it is a file.
- */
-
- if ((in->variantType == YAFFS_OBJECT_TYPE_FILE) &&
- ((oh &&
- oh-> type == YAFFS_OBJECT_TYPE_FILE)||
- (tags.extraHeaderInfoAvailable &&
- tags.extraObjectType == YAFFS_OBJECT_TYPE_FILE))
- ) {
- __u32 thisSize =
- (oh) ? oh->fileSize : tags.
- extraFileLength;
- __u32 parentObjectId =
- (oh) ? oh->
- parentObjectId : tags.
- extraParentObjectId;
- unsigned isShrink =
- (oh) ? oh->isShrink : tags.
- extraIsShrinkHeader;
-
- /* If it is deleted (unlinked at start also means deleted)
- * we treat the file size as being zeroed at this point.
- */
- if (parentObjectId ==
- YAFFS_OBJECTID_DELETED
- || parentObjectId ==
- YAFFS_OBJECTID_UNLINKED) {
- thisSize = 0;
- isShrink = 1;
- }
-
- if (isShrink &&
- in->variant.fileVariant.
- shrinkSize > thisSize) {
- in->variant.fileVariant.
- shrinkSize =
- thisSize;
- }
-
- if (isShrink) {
- bi->hasShrinkHeader = 1;
- }
-
- }
- /* Use existing - destroy this one. */
- yaffs_DeleteChunk(dev, chunk, 1, __LINE__);
-
- }
-
- if (!in->valid &&
- (tags.objectId == YAFFS_OBJECTID_ROOT ||
- tags.objectId ==
- YAFFS_OBJECTID_LOSTNFOUND)) {
- /* We only load some info, don't fiddle with directory structure */
- in->valid = 1;
-
- if(oh) {
- in->variantType = oh->type;
-
- in->yst_mode = oh->yst_mode;
-#ifdef CONFIG_YAFFS_WINCE
- in->win_atime[0] = oh->win_atime[0];
- in->win_ctime[0] = oh->win_ctime[0];
- in->win_mtime[0] = oh->win_mtime[0];
- in->win_atime[1] = oh->win_atime[1];
- in->win_ctime[1] = oh->win_ctime[1];
- in->win_mtime[1] = oh->win_mtime[1];
-#else
- in->yst_uid = oh->yst_uid;
- in->yst_gid = oh->yst_gid;
- in->yst_atime = oh->yst_atime;
- in->yst_mtime = oh->yst_mtime;
- in->yst_ctime = oh->yst_ctime;
- in->yst_rdev = oh->yst_rdev;
-
-#endif
- } else {
- in->variantType = tags.extraObjectType;
- in->lazyLoaded = 1;
- }
-
- in->chunkId = chunk;
-
- } else if (!in->valid) {
- /* we need to load this info */
-
- in->valid = 1;
- in->chunkId = chunk;
-
- if(oh) {
- in->variantType = oh->type;
-
- in->yst_mode = oh->yst_mode;
-#ifdef CONFIG_YAFFS_WINCE
- in->win_atime[0] = oh->win_atime[0];
- in->win_ctime[0] = oh->win_ctime[0];
- in->win_mtime[0] = oh->win_mtime[0];
- in->win_atime[1] = oh->win_atime[1];
- in->win_ctime[1] = oh->win_ctime[1];
- in->win_mtime[1] = oh->win_mtime[1];
-#else
- in->yst_uid = oh->yst_uid;
- in->yst_gid = oh->yst_gid;
- in->yst_atime = oh->yst_atime;
- in->yst_mtime = oh->yst_mtime;
- in->yst_ctime = oh->yst_ctime;
- in->yst_rdev = oh->yst_rdev;
-#endif
-
- if (oh->shadowsObject > 0)
- yaffs_HandleShadowedObject(dev,
- oh->
- shadowsObject,
- 1);
-
-
- yaffs_SetObjectName(in, oh->name);
- parent =
- yaffs_FindOrCreateObjectByNumber
- (dev, oh->parentObjectId,
- YAFFS_OBJECT_TYPE_DIRECTORY);
-
- fileSize = oh->fileSize;
- isShrink = oh->isShrink;
- equivalentObjectId = oh->equivalentObjectId;
-
- }
- else {
- in->variantType = tags.extraObjectType;
- parent =
- yaffs_FindOrCreateObjectByNumber
- (dev, tags.extraParentObjectId,
- YAFFS_OBJECT_TYPE_DIRECTORY);
- fileSize = tags.extraFileLength;
- isShrink = tags.extraIsShrinkHeader;
- equivalentObjectId = tags.extraEquivalentObjectId;
- in->lazyLoaded = 1;
-
- }
- in->dirty = 0;
-
- /* directory stuff...
- * hook up to parent
- */
-
- if (parent->variantType ==
- YAFFS_OBJECT_TYPE_UNKNOWN) {
- /* Set up as a directory */
- parent->variantType =
- YAFFS_OBJECT_TYPE_DIRECTORY;
- INIT_LIST_HEAD(&parent->variant.
- directoryVariant.
- children);
- } else if (parent->variantType !=
- YAFFS_OBJECT_TYPE_DIRECTORY)
- {
- /* Hoosterman, another problem....
- * We're trying to use a non-directory as a directory
- */
-
- T(YAFFS_TRACE_ERROR,
- (TSTR
- ("yaffs tragedy: attempting to use non-directory as"
- " a directory in scan. Put in lost+found."
- TENDSTR)));
- parent = dev->lostNFoundDir;
- }
-
- yaffs_AddObjectToDirectory(parent, in);
-
- itsUnlinked = (parent == dev->deletedDir) ||
- (parent == dev->unlinkedDir);
-
- if (isShrink) {
- /* Mark the block as having a shrinkHeader */
- bi->hasShrinkHeader = 1;
- }
-
- /* Note re hardlinks.
- * Since we might scan a hardlink before its equivalent object is scanned
- * we put them all in a list.
- * After scanning is complete, we should have all the objects, so we run
- * through this list and fix up all the chains.
- */
-
- switch (in->variantType) {
- case YAFFS_OBJECT_TYPE_UNKNOWN:
- /* Todo got a problem */
- break;
- case YAFFS_OBJECT_TYPE_FILE:
-
- if (in->variant.fileVariant.
- scannedFileSize < fileSize) {
- /* This covers the case where the file size is greater
- * than where the data is
- * This will happen if the file is resized to be larger
- * than its current data extents.
- */
- in->variant.fileVariant.fileSize = fileSize;
- in->variant.fileVariant.scannedFileSize =
- in->variant.fileVariant.fileSize;
- }
-
- if (isShrink &&
- in->variant.fileVariant.shrinkSize > fileSize) {
- in->variant.fileVariant.shrinkSize = fileSize;
- }