X-Git-Url: http://www.aleph1.co.uk/gitweb/?p=yaffs2.git;a=blobdiff_plain;f=yaffs_yaffs1.c;h=9eb6030825475133b8c02508aec0f11aa39db6d1;hp=5e2d79aeaf5cab49f9c60278706ed5eb7b4e17fa;hb=fe192b14d52d6c7d4722402686dcb553153916c3;hpb=e33554a67753729f6b74677473cf0ec3b8d35a7e diff --git a/yaffs_yaffs1.c b/yaffs_yaffs1.c index 5e2d79a..9eb6030 100644 --- a/yaffs_yaffs1.c +++ b/yaffs_yaffs1.c @@ -10,119 +10,108 @@ * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. */ + #include "yaffs_yaffs1.h" #include "yportenv.h" #include "yaffs_trace.h" #include "yaffs_bitmap.h" #include "yaffs_getblockinfo.h" #include "yaffs_nand.h" +#include "yaffs_attribs.h" - -int yaffs1_scan(yaffs_Device *dev) +int yaffs1_scan(struct yaffs_dev *dev) { - yaffs_ExtendedTags tags; + struct yaffs_ext_tags 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; + enum yaffs_block_state state; + struct yaffs_obj *hard_list = NULL; + struct yaffs_block_info *bi; + u32 seq_number; + struct yaffs_obj_hdr *oh; + struct yaffs_obj *in; + struct yaffs_obj *parent; int alloc_failed = 0; - struct yaffs_ShadowFixerStruct *shadowFixerList = NULL; - + struct yaffs_shadow_fixer *shadow_fixers = NULL; - __u8 *chunkData; + u8 *chunk_data; + yaffs_trace(YAFFS_TRACE_SCAN, + "yaffs1_scan starts intstartblk %d intendblk %d...", + dev->internal_start_block, dev->internal_end_block); + chunk_data = yaffs_get_temp_buffer(dev, __LINE__); - T(YAFFS_TRACE_SCAN, - (TSTR("yaffs1_scan starts intstartblk %d intendblk %d..." TENDSTR), - dev->internalStartBlock, dev->internalEndBlock)); - - chunkData = yaffs_get_temp_buffer(dev, __LINE__); - - dev->sequenceNumber = YAFFS_LOWEST_SEQUENCE_NUMBER; + dev->seq_number = YAFFS_LOWEST_SEQUENCE_NUMBER; /* Scan all the blocks to determine their state */ - bi = dev->blockInfo; - for (blk = dev->internalStartBlock; blk <= dev->internalEndBlock; blk++) { + bi = dev->block_info; + for (blk = dev->internal_start_block; blk <= dev->internal_end_block; + blk++) { yaffs_clear_chunk_bits(dev, blk); - bi->pagesInUse = 0; - bi->softDeletions = 0; + bi->pages_in_use = 0; + bi->soft_del_pages = 0; - yaffs_query_init_block_state(dev, blk, &state, &sequenceNumber); + yaffs_query_init_block_state(dev, blk, &state, &seq_number); - bi->blockState = state; - bi->sequenceNumber = sequenceNumber; + bi->block_state = state; + bi->seq_number = seq_number; - if (bi->sequenceNumber == YAFFS_SEQUENCE_BAD_BLOCK) - bi->blockState = state = YAFFS_BLOCK_STATE_DEAD; + if (bi->seq_number == YAFFS_SEQUENCE_BAD_BLOCK) + bi->block_state = state = YAFFS_BLOCK_STATE_DEAD; - T(YAFFS_TRACE_SCAN_DEBUG, - (TSTR("Block scanning block %d state %d seq %d" TENDSTR), blk, - state, sequenceNumber)); + yaffs_trace(YAFFS_TRACE_SCAN_DEBUG, + "Block scanning block %d state %d seq %d", + blk, state, seq_number); if (state == YAFFS_BLOCK_STATE_DEAD) { - T(YAFFS_TRACE_BAD_BLOCKS, - (TSTR("block %d is bad" TENDSTR), blk)); + yaffs_trace(YAFFS_TRACE_BAD_BLOCKS, + "block %d is bad", blk); } else if (state == YAFFS_BLOCK_STATE_EMPTY) { - T(YAFFS_TRACE_SCAN_DEBUG, - (TSTR("Block empty " TENDSTR))); - dev->nErasedBlocks++; - dev->nFreeChunks += dev->param.nChunksPerBlock; + yaffs_trace(YAFFS_TRACE_SCAN_DEBUG, "Block empty "); + dev->n_erased_blocks++; + dev->n_free_chunks += dev->param.chunks_per_block; } bi++; } - startIterator = dev->internalStartBlock; - endIterator = dev->internalEndBlock; - /* For each block.... */ - for (blockIterator = startIterator; !alloc_failed && blockIterator <= endIterator; - blockIterator++) { + for (blk = dev->internal_start_block; + !alloc_failed && blk <= dev->internal_end_block; blk++) { - YYIELD(); - - YYIELD(); - - blk = blockIterator; + cond_resched(); bi = yaffs_get_block_info(dev, blk); - state = bi->blockState; + state = bi->block_state; deleted = 0; - /* For each chunk in each block that needs scanning....*/ - for (c = 0; !alloc_failed && c < dev->param.nChunksPerBlock && + /* For each chunk in each block that needs scanning.... */ + for (c = 0; !alloc_failed && c < dev->param.chunks_per_block && state == YAFFS_BLOCK_STATE_NEEDS_SCANNING; c++) { /* Read the tags and decide what to do */ - chunk = blk * dev->param.nChunksPerBlock + c; + chunk = blk * dev->param.chunks_per_block + c; result = yaffs_rd_chunk_tags_nand(dev, chunk, NULL, - &tags); + &tags); /* Let's have a good look at this chunk... */ - if (tags.eccResult == YAFFS_ECC_RESULT_UNFIXED || tags.chunkDeleted) { + if (tags.ecc_result == YAFFS_ECC_RESULT_UNFIXED + || tags.is_deleted) { /* YAFFS1 only... * A deleted chunk */ deleted++; - dev->nFreeChunks++; + dev->n_free_chunks++; /*T((" %d %d deleted\n",blk,c)); */ - } else if (!tags.chunkUsed) { + } else if (!tags.chunk_used) { /* An unassigned chunk in the block * This means that either the block is empty or * this is the one being allocated from @@ -131,81 +120,82 @@ int yaffs1_scan(yaffs_Device *dev) 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++; + dev->n_erased_blocks++; } else { /* this is the block being allocated from */ - T(YAFFS_TRACE_SCAN, - (TSTR - (" Allocating from %d %d" TENDSTR), - blk, c)); + yaffs_trace(YAFFS_TRACE_SCAN, + " Allocating from %d %d", + blk, c); state = YAFFS_BLOCK_STATE_ALLOCATING; - dev->allocationBlock = blk; - dev->allocationPage = c; - dev->allocationBlockFinder = blk; + dev->alloc_block = blk; + dev->alloc_page = c; + dev->alloc_block_finder = blk; /* Set block finder here to encourage the allocator to go forth from here. */ } - dev->nFreeChunks += (dev->param.nChunksPerBlock - c); - } else if (tags.chunkId > 0) { - /* chunkId > 0 so it is a data chunk... */ + dev->n_free_chunks += + (dev->param.chunks_per_block - c); + } else if (tags.chunk_id > 0) { + /* chunk_id > 0 so it is a data chunk... */ unsigned int endpos; yaffs_set_chunk_bit(dev, blk, c); - bi->pagesInUse++; + bi->pages_in_use++; in = yaffs_find_or_create_by_number(dev, - tags. - objectId, - YAFFS_OBJECT_TYPE_FILE); + tags.obj_id, + YAFFS_OBJECT_TYPE_FILE); /* PutChunkIntoFile checks for a clash (two data chunks with - * the same chunkId). + * the same chunk_id). */ if (!in) alloc_failed = 1; if (in) { - if (!yaffs_put_chunk_in_file(in, tags.chunkId, chunk, 1)) + if (!yaffs_put_chunk_in_file + (in, tags.chunk_id, chunk, 1)) alloc_failed = 1; } endpos = - (tags.chunkId - 1) * dev->nDataBytesPerChunk + - tags.byteCount; - if (in && - in->variantType == YAFFS_OBJECT_TYPE_FILE - && in->variant.fileVariant.scannedFileSize < + (tags.chunk_id - + 1) * dev->data_bytes_per_chunk + + tags.n_bytes; + if (in + && in->variant_type == + YAFFS_OBJECT_TYPE_FILE + && in->variant.file_variant.scanned_size < endpos) { - in->variant.fileVariant. - scannedFileSize = endpos; - if (!dev->param.useHeaderFileSize) { - in->variant.fileVariant. - fileSize = - in->variant.fileVariant. - scannedFileSize; + in->variant.file_variant.scanned_size = + endpos; + if (!dev->param.use_header_file_size) { + in->variant. + file_variant.file_size = + in->variant. + file_variant.scanned_size; } } - /* T((" %d %d data %d %d\n",blk,c,tags.objectId,tags.chunkId)); */ + /* T((" %d %d data %d %d\n",blk,c,tags.obj_id,tags.chunk_id)); */ } else { - /* chunkId == 0, so it is an ObjectHeader. + /* chunk_id == 0, so it is an ObjectHeader. * Thus, we read in the object header and make the object */ yaffs_set_chunk_bit(dev, blk, c); - bi->pagesInUse++; + bi->pages_in_use++; result = yaffs_rd_chunk_tags_nand(dev, chunk, - chunkData, - NULL); + chunk_data, + NULL); - oh = (yaffs_ObjectHeader *) chunkData; + oh = (struct yaffs_obj_hdr *)chunk_data; - in = yaffs_find_by_number(dev, - tags.objectId); - if (in && in->variantType != oh->type) { + in = yaffs_find_by_number(dev, tags.obj_id); + if (in && in->variant_type != oh->type) { /* This should not happen, but somehow - * Wev'e ended up with an objectId that has been reused but not yet + * Wev'e ended up with an obj_id that has been reused but not yet * deleted, and worse still it has changed type. Delete the old object. */ @@ -215,26 +205,29 @@ int yaffs1_scan(yaffs_Device *dev) } in = yaffs_find_or_create_by_number(dev, - tags. - objectId, - oh->type); + tags.obj_id, + oh->type); if (!in) alloc_failed = 1; - if (in && oh->shadowsObject > 0) { + if (in && oh->shadows_obj > 0) { - struct yaffs_ShadowFixerStruct *fixer; - fixer = YMALLOC(sizeof(struct yaffs_ShadowFixerStruct)); + struct yaffs_shadow_fixer *fixer; + fixer = + kmalloc(sizeof + (struct yaffs_shadow_fixer), + GFP_NOFS); if (fixer) { - fixer->next = shadowFixerList; - shadowFixerList = fixer; - fixer->objectId = tags.objectId; - fixer->shadowedId = oh->shadowsObject; - T(YAFFS_TRACE_SCAN, - (TSTR - (" Shadow fixer: %d shadows %d" TENDSTR), - fixer->objectId, fixer->shadowedId)); + fixer->next = shadow_fixers; + shadow_fixers = fixer; + fixer->obj_id = tags.obj_id; + fixer->shadowed_id = + oh->shadows_obj; + yaffs_trace(YAFFS_TRACE_SCAN, + " Shadow fixer: %d shadows %d", + fixer->obj_id, + fixer->shadowed_id); } @@ -243,72 +236,47 @@ int yaffs1_scan(yaffs_Device *dev) 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; + unsigned existing_serial = in->serial; + unsigned new_serial = + tags.serial_number; - if (((existingSerial + 1) & 3) == newSerial) { + if (((existing_serial + 1) & 3) == + new_serial) { /* Use new one - destroy the exisiting one */ yaffs_chunk_del(dev, - in->hdrChunk, - 1, __LINE__); + in->hdr_chunk, + 1, __LINE__); in->valid = 0; } else { /* Use existing - destroy this one. */ yaffs_chunk_del(dev, chunk, 1, - __LINE__); + __LINE__); } } if (in && !in->valid && - (tags.objectId == YAFFS_OBJECTID_ROOT || - tags.objectId == YAFFS_OBJECTID_LOSTNFOUND)) { + (tags.obj_id == YAFFS_OBJECTID_ROOT || + tags.obj_id == + YAFFS_OBJECTID_LOSTNFOUND)) { /* We only load some info, don't fiddle with directory structure */ in->valid = 1; - in->variantType = oh->type; + in->variant_type = 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_load_attribs(in, oh); + in->hdr_chunk = chunk; + in->serial = tags.serial_number; } else if (in && !in->valid) { /* we need to load this info */ in->valid = 1; - in->variantType = oh->type; + in->variant_type = 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_load_attribs(in, oh); + in->hdr_chunk = chunk; + in->serial = tags.serial_number; yaffs_set_obj_name_from_oh(in, oh); in->dirty = 0; @@ -319,37 +287,37 @@ int yaffs1_scan(yaffs_Device *dev) parent = yaffs_find_or_create_by_number - (dev, oh->parentObjectId, + (dev, oh->parent_obj_id, YAFFS_OBJECT_TYPE_DIRECTORY); if (!parent) alloc_failed = 1; - if (parent && parent->variantType == + if (parent && parent->variant_type == 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 != + parent->variant_type = + YAFFS_OBJECT_TYPE_DIRECTORY; + INIT_LIST_HEAD(&parent-> + variant.dir_variant.children); + } else if (!parent + || parent->variant_type != 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_trace(YAFFS_TRACE_ERROR, + "yaffs tragedy: attempting to use non-directory as a directory in scan. Put in lost+found." + ); + parent = dev->lost_n_found; } yaffs_add_obj_to_dir(parent, in); - if (0 && (parent == dev->deletedDir || - parent == dev->unlinkedDir)) { + if (0 && (parent == dev->del_dir || + parent == + dev->unlinked_dir)) { in->deleted = 1; /* If it is unlinked at start up then it wants deleting */ - dev->nDeletedFiles++; + dev->n_deleted_files++; } /* Note re hardlinks. * Since we might scan a hardlink before its equivalent object is scanned @@ -358,26 +326,27 @@ int yaffs1_scan(yaffs_Device *dev) * list and fix up all the chains. */ - switch (in->variantType) { + switch (in->variant_type) { case YAFFS_OBJECT_TYPE_UNKNOWN: /* Todo got a problem */ break; case YAFFS_OBJECT_TYPE_FILE: - if (dev->param.useHeaderFileSize) + if (dev->param. + use_header_file_size) - in->variant.fileVariant. - fileSize = - oh->fileSize; + in->variant. + file_variant.file_size + = oh->file_size; break; case YAFFS_OBJECT_TYPE_HARDLINK: - in->variant.hardLinkVariant. - equivalentObjectId = - oh->equivalentObjectId; - in->hardLinks.next = - (struct ylist_head *) - hardList; - hardList = in; + in->variant. + hardlink_variant.equiv_id = + oh->equiv_id; + in->hard_links.next = + (struct list_head *) + hard_list; + hard_list = in; break; case YAFFS_OBJECT_TYPE_DIRECTORY: /* Do nothing */ @@ -386,9 +355,11 @@ int yaffs1_scan(yaffs_Device *dev) /* Do nothing */ break; case YAFFS_OBJECT_TYPE_SYMLINK: - in->variant.symLinkVariant.alias = + in->variant.symlink_variant. + alias = yaffs_clone_str(oh->alias); - if (!in->variant.symLinkVariant.alias) + if (!in->variant. + symlink_variant.alias) alloc_failed = 1; break; } @@ -398,68 +369,65 @@ int yaffs1_scan(yaffs_Device *dev) } if (state == YAFFS_BLOCK_STATE_NEEDS_SCANNING) { - /* If we got this far while scanning, then the block is fully allocated.*/ + /* If we got this far while scanning, then the block is fully allocated. */ state = YAFFS_BLOCK_STATE_FULL; } if (state == YAFFS_BLOCK_STATE_ALLOCATING) { - /* If the block was partially allocated then treat it as fully allocated.*/ + /* If the block was partially allocated then treat it as fully allocated. */ state = YAFFS_BLOCK_STATE_FULL; - dev->allocationBlock = -1; + dev->alloc_block = -1; } - bi->blockState = state; + bi->block_state = state; /* Now let's see if it was dirty */ - if (bi->pagesInUse == 0 && - !bi->hasShrinkHeader && - bi->blockState == YAFFS_BLOCK_STATE_FULL) { + if (bi->pages_in_use == 0 && + !bi->has_shrink_hdr && + bi->block_state == YAFFS_BLOCK_STATE_FULL) { yaffs_block_became_dirty(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. */ - yaffs_link_fixup(dev, hardList); + yaffs_link_fixup(dev, hard_list); /* Fix up any shadowed objects */ { - struct yaffs_ShadowFixerStruct *fixer; - yaffs_Object *obj; + struct yaffs_shadow_fixer *fixer; + struct yaffs_obj *obj; - while (shadowFixerList) { - fixer = shadowFixerList; - shadowFixerList = fixer->next; + while (shadow_fixers) { + fixer = shadow_fixers; + shadow_fixers = fixer->next; /* Complete the rename transaction by deleting the shadowed object * then setting the object header to unshadowed. */ - obj = yaffs_find_by_number(dev, fixer->shadowedId); + obj = yaffs_find_by_number(dev, fixer->shadowed_id); if (obj) yaffs_del_obj(obj); - obj = yaffs_find_by_number(dev, fixer->objectId); + obj = yaffs_find_by_number(dev, fixer->obj_id); if (obj) yaffs_update_oh(obj, NULL, 1, 0, 0, NULL); - YFREE(fixer); + kfree(fixer); } } - yaffs_release_temp_buffer(dev, chunkData, __LINE__); + yaffs_release_temp_buffer(dev, chunk_data, __LINE__); if (alloc_failed) return YAFFS_FAIL; - T(YAFFS_TRACE_SCAN, (TSTR("yaffs1_scan ends" TENDSTR))); - + yaffs_trace(YAFFS_TRACE_SCAN, "yaffs1_scan ends"); return YAFFS_OK; } -