diff options
Diffstat (limited to 'target/linux/generic/files/fs/yaffs2/yaffs_yaffs2.c')
| -rw-r--r-- | target/linux/generic/files/fs/yaffs2/yaffs_yaffs2.c | 1740 |
1 files changed, 866 insertions, 874 deletions
diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_yaffs2.c b/target/linux/generic/files/fs/yaffs2/yaffs_yaffs2.c index 58c36003f6..f1dc972276 100644 --- a/target/linux/generic/files/fs/yaffs2/yaffs_yaffs2.c +++ b/target/linux/generic/files/fs/yaffs2/yaffs_yaffs2.c @@ -1,7 +1,7 @@ /* * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. * - * Copyright (C) 2002-2010 Aleph One Ltd. + * Copyright (C) 2002-2011 Aleph One Ltd. * for Toby Churchill Ltd and Brightstar Engineering * * Created by Charles Manning <charles@aleph1.co.uk> @@ -11,16 +11,16 @@ * published by the Free Software Foundation. */ - #include "yaffs_guts.h" #include "yaffs_trace.h" #include "yaffs_yaffs2.h" #include "yaffs_checkptrw.h" #include "yaffs_bitmap.h" -#include "yaffs_qsort.h" #include "yaffs_nand.h" #include "yaffs_getblockinfo.h" #include "yaffs_verify.h" +#include "yaffs_attribs.h" +#include "yaffs_summary.h" /* * Checkpoints are really no benefit on very small partitions. @@ -29,26 +29,24 @@ * the partition is at least this big. */ #define YAFFS_CHECKPOINT_MIN_BLOCKS 60 - #define YAFFS_SMALL_HOLE_THRESHOLD 4 - /* * Oldest Dirty Sequence Number handling. */ - + /* yaffs_calc_oldest_dirty_seq() * yaffs2_find_oldest_dirty_seq() * Calculate the oldest dirty sequence number if we don't know it. */ -void yaffs_calc_oldest_dirty_seq(yaffs_dev_t *dev) +void yaffs_calc_oldest_dirty_seq(struct yaffs_dev *dev) { int i; unsigned seq; unsigned block_no = 0; - yaffs_block_info_t *b; + struct yaffs_block_info *b; - if(!dev->param.is_yaffs2) + if (!dev->param.is_yaffs2) return; /* Find the oldest dirty sequence number. */ @@ -56,44 +54,44 @@ void yaffs_calc_oldest_dirty_seq(yaffs_dev_t *dev) b = dev->block_info; for (i = dev->internal_start_block; i <= dev->internal_end_block; i++) { if (b->block_state == YAFFS_BLOCK_STATE_FULL && - (b->pages_in_use - b->soft_del_pages) < dev->param.chunks_per_block && - b->seq_number < seq) { + (b->pages_in_use - b->soft_del_pages) < + dev->param.chunks_per_block && + b->seq_number < seq) { seq = b->seq_number; block_no = i; } b++; } - if(block_no){ + if (block_no) { dev->oldest_dirty_seq = seq; dev->oldest_dirty_block = block_no; } - } - -void yaffs2_find_oldest_dirty_seq(yaffs_dev_t *dev) +void yaffs2_find_oldest_dirty_seq(struct yaffs_dev *dev) { - if(!dev->param.is_yaffs2) + if (!dev->param.is_yaffs2) return; - if(!dev->oldest_dirty_seq) + if (!dev->oldest_dirty_seq) yaffs_calc_oldest_dirty_seq(dev); } /* * yaffs_clear_oldest_dirty_seq() * Called when a block is erased or marked bad. (ie. when its seq_number - * becomes invalid). If the value matches the oldest then we clear + * becomes invalid). If the value matches the oldest then we clear * dev->oldest_dirty_seq to force its recomputation. */ -void yaffs2_clear_oldest_dirty_seq(yaffs_dev_t *dev, yaffs_block_info_t *bi) +void yaffs2_clear_oldest_dirty_seq(struct yaffs_dev *dev, + struct yaffs_block_info *bi) { - if(!dev->param.is_yaffs2) + if (!dev->param.is_yaffs2) return; - if(!bi || bi->seq_number == dev->oldest_dirty_seq){ + if (!bi || bi->seq_number == dev->oldest_dirty_seq) { dev->oldest_dirty_seq = 0; dev->oldest_dirty_block = 0; } @@ -104,21 +102,21 @@ void yaffs2_clear_oldest_dirty_seq(yaffs_dev_t *dev, yaffs_block_info_t *bi) * Update the oldest dirty sequence number whenever we dirty a block. * Only do this if the oldest_dirty_seq is actually being tracked. */ -void yaffs2_update_oldest_dirty_seq(yaffs_dev_t *dev, unsigned block_no, yaffs_block_info_t *bi) +void yaffs2_update_oldest_dirty_seq(struct yaffs_dev *dev, unsigned block_no, + struct yaffs_block_info *bi) { - if(!dev->param.is_yaffs2) + if (!dev->param.is_yaffs2) return; - if(dev->oldest_dirty_seq){ - if(dev->oldest_dirty_seq > bi->seq_number){ + if (dev->oldest_dirty_seq) { + if (dev->oldest_dirty_seq > bi->seq_number) { dev->oldest_dirty_seq = bi->seq_number; dev->oldest_dirty_block = block_no; } } } -int yaffs_block_ok_for_gc(yaffs_dev_t *dev, - yaffs_block_info_t *bi) +int yaffs_block_ok_for_gc(struct yaffs_dev *dev, struct yaffs_block_info *bi) { if (!dev->param.is_yaffs2) @@ -129,8 +127,8 @@ int yaffs_block_ok_for_gc(yaffs_dev_t *dev, yaffs2_find_oldest_dirty_seq(dev); - /* Can't do gc of this block if there are any blocks older than this one that have - * discarded pages. + /* Can't do gc of this block if there are any blocks older than this + * one that have discarded pages. */ return (bi->seq_number <= dev->oldest_dirty_seq); } @@ -140,32 +138,30 @@ int yaffs_block_ok_for_gc(yaffs_dev_t *dev, * periodically finds the oldest full block by sequence number for refreshing. * Only for yaffs2. */ -__u32 yaffs2_find_refresh_block(yaffs_dev_t *dev) +u32 yaffs2_find_refresh_block(struct yaffs_dev *dev) { - __u32 b ; - - __u32 oldest = 0; - __u32 oldestSequence = 0; - - yaffs_block_info_t *bi; + u32 b; + u32 oldest = 0; + u32 oldest_seq = 0; + struct yaffs_block_info *bi; - if(!dev->param.is_yaffs2) + if (!dev->param.is_yaffs2) return oldest; /* * If refresh period < 10 then refreshing is disabled. */ - if(dev->param.refresh_period < 10) - return oldest; + if (dev->param.refresh_period < 10) + return oldest; - /* - * Fix broken values. - */ - if(dev->refresh_skip > dev->param.refresh_period) - dev->refresh_skip = dev->param.refresh_period; + /* + * Fix broken values. + */ + if (dev->refresh_skip > dev->param.refresh_period) + dev->refresh_skip = dev->param.refresh_period; - if(dev->refresh_skip > 0) - return oldest; + if (dev->refresh_skip > 0) + return oldest; /* * Refresh skip is now zero. @@ -175,84 +171,86 @@ __u32 yaffs2_find_refresh_block(yaffs_dev_t *dev) dev->refresh_skip = dev->param.refresh_period; dev->refresh_count++; bi = dev->block_info; - for (b = dev->internal_start_block; b <=dev->internal_end_block; b++){ + for (b = dev->internal_start_block; b <= dev->internal_end_block; b++) { - if (bi->block_state == YAFFS_BLOCK_STATE_FULL){ + if (bi->block_state == YAFFS_BLOCK_STATE_FULL) { - if(oldest < 1 || - bi->seq_number < oldestSequence){ - oldest = b; - oldestSequence = bi->seq_number; - } + if (oldest < 1 || bi->seq_number < oldest_seq) { + oldest = b; + oldest_seq = bi->seq_number; + } } bi++; } if (oldest > 0) { - T(YAFFS_TRACE_GC, - (TSTR("GC refresh count %d selected block %d with seq_number %d" TENDSTR), - dev->refresh_count, oldest, oldestSequence)); + yaffs_trace(YAFFS_TRACE_GC, + "GC refresh count %d selected block %d with seq_number %d", + dev->refresh_count, oldest, oldest_seq); } return oldest; } -int yaffs2_checkpt_required(yaffs_dev_t *dev) +int yaffs2_checkpt_required(struct yaffs_dev *dev) { int nblocks; - - if(!dev->param.is_yaffs2) + + if (!dev->param.is_yaffs2) return 0; - - nblocks = dev->internal_end_block - dev->internal_start_block + 1 ; - return !dev->param.skip_checkpt_wr && - !dev->read_only && - (nblocks >= YAFFS_CHECKPOINT_MIN_BLOCKS); + nblocks = dev->internal_end_block - dev->internal_start_block + 1; + + return !dev->param.skip_checkpt_wr && + !dev->read_only && (nblocks >= YAFFS_CHECKPOINT_MIN_BLOCKS); } -int yaffs_calc_checkpt_blocks_required(yaffs_dev_t *dev) +int yaffs_calc_checkpt_blocks_required(struct yaffs_dev *dev) { int retval; + int n_bytes = 0; + int n_blocks; + int dev_blocks; - if(!dev->param.is_yaffs2) + if (!dev->param.is_yaffs2) return 0; - if (!dev->checkpoint_blocks_required && - yaffs2_checkpt_required(dev)){ + if (!dev->checkpoint_blocks_required && yaffs2_checkpt_required(dev)) { /* Not a valid value so recalculate */ - int n_bytes = 0; - int nBlocks; - int devBlocks = (dev->param.end_block - dev->param.start_block + 1); - - n_bytes += sizeof(yaffs_checkpt_validty_t); - n_bytes += sizeof(yaffs_checkpt_dev_t); - n_bytes += devBlocks * sizeof(yaffs_block_info_t); - n_bytes += devBlocks * dev->chunk_bit_stride; - n_bytes += (sizeof(yaffs_checkpt_obj_t) + sizeof(__u32)) * (dev->n_obj); - n_bytes += (dev->tnode_size + sizeof(__u32)) * (dev->n_tnodes); - n_bytes += sizeof(yaffs_checkpt_validty_t); - n_bytes += sizeof(__u32); /* checksum*/ - - /* Round up and add 2 blocks to allow for some bad blocks, so add 3 */ - - nBlocks = (n_bytes/(dev->data_bytes_per_chunk * dev->param.chunks_per_block)) + 3; - - dev->checkpoint_blocks_required = nBlocks; + dev_blocks = dev->param.end_block - dev->param.start_block + 1; + n_bytes += sizeof(struct yaffs_checkpt_validity); + n_bytes += sizeof(struct yaffs_checkpt_dev); + n_bytes += dev_blocks * sizeof(struct yaffs_block_info); + n_bytes += dev_blocks * dev->chunk_bit_stride; + n_bytes += + (sizeof(struct yaffs_checkpt_obj) + sizeof(u32)) * + dev->n_obj; + n_bytes += (dev->tnode_size + sizeof(u32)) * dev->n_tnodes; + n_bytes += sizeof(struct yaffs_checkpt_validity); + n_bytes += sizeof(u32); /* checksum */ + + /* Round up and add 2 blocks to allow for some bad blocks, + * so add 3 */ + + n_blocks = + (n_bytes / + (dev->data_bytes_per_chunk * + dev->param.chunks_per_block)) + 3; + + dev->checkpoint_blocks_required = n_blocks; } retval = dev->checkpoint_blocks_required - dev->blocks_in_checkpt; - if(retval < 0) + if (retval < 0) retval = 0; return retval; } /*--------------------- Checkpointing --------------------*/ - -static int yaffs2_wr_checkpt_validity_marker(yaffs_dev_t *dev, int head) +static int yaffs2_wr_checkpt_validity_marker(struct yaffs_dev *dev, int head) { - yaffs_checkpt_validty_t cp; + struct yaffs_checkpt_validity cp; memset(&cp, 0, sizeof(cp)); @@ -261,27 +259,26 @@ static int yaffs2_wr_checkpt_validity_marker(yaffs_dev_t *dev, int head) cp.version = YAFFS_CHECKPOINT_VERSION; cp.head = (head) ? 1 : 0; - return (yaffs2_checkpt_wr(dev, &cp, sizeof(cp)) == sizeof(cp)) ? - 1 : 0; + return (yaffs2_checkpt_wr(dev, &cp, sizeof(cp)) == sizeof(cp)) ? 1 : 0; } -static int yaffs2_rd_checkpt_validty_marker(yaffs_dev_t *dev, int head) +static int yaffs2_rd_checkpt_validity_marker(struct yaffs_dev *dev, int head) { - yaffs_checkpt_validty_t cp; + struct yaffs_checkpt_validity cp; int ok; ok = (yaffs2_checkpt_rd(dev, &cp, sizeof(cp)) == sizeof(cp)); if (ok) ok = (cp.struct_type == sizeof(cp)) && - (cp.magic == YAFFS_MAGIC) && - (cp.version == YAFFS_CHECKPOINT_VERSION) && - (cp.head == ((head) ? 1 : 0)); + (cp.magic == YAFFS_MAGIC) && + (cp.version == YAFFS_CHECKPOINT_VERSION) && + (cp.head == ((head) ? 1 : 0)); return ok ? 1 : 0; } -static void yaffs2_dev_to_checkpt_dev(yaffs_checkpt_dev_t *cp, - yaffs_dev_t *dev) +static void yaffs2_dev_to_checkpt_dev(struct yaffs_checkpt_dev *cp, + struct yaffs_dev *dev) { cp->n_erased_blocks = dev->n_erased_blocks; cp->alloc_block = dev->alloc_block; @@ -295,8 +292,8 @@ static void yaffs2_dev_to_checkpt_dev(yaffs_checkpt_dev_t *cp, } -static void yaffs_checkpt_dev_to_dev(yaffs_dev_t *dev, - yaffs_checkpt_dev_t *cp) +static void yaffs_checkpt_dev_to_dev(struct yaffs_dev *dev, + struct yaffs_checkpt_dev *cp) { dev->n_erased_blocks = cp->n_erased_blocks; dev->alloc_block = cp->alloc_block; @@ -309,42 +306,40 @@ static void yaffs_checkpt_dev_to_dev(yaffs_dev_t *dev, dev->seq_number = cp->seq_number; } - -static int yaffs2_wr_checkpt_dev(yaffs_dev_t *dev) +static int yaffs2_wr_checkpt_dev(struct yaffs_dev *dev) { - yaffs_checkpt_dev_t cp; - __u32 n_bytes; - __u32 nBlocks = (dev->internal_end_block - dev->internal_start_block + 1); - + struct yaffs_checkpt_dev cp; + u32 n_bytes; + u32 n_blocks = dev->internal_end_block - dev->internal_start_block + 1; int ok; - /* Write device runtime values*/ + /* Write device runtime values */ yaffs2_dev_to_checkpt_dev(&cp, dev); cp.struct_type = sizeof(cp); ok = (yaffs2_checkpt_wr(dev, &cp, sizeof(cp)) == sizeof(cp)); + if (!ok) + return 0; /* Write block info */ - if (ok) { - n_bytes = nBlocks * sizeof(yaffs_block_info_t); - ok = (yaffs2_checkpt_wr(dev, dev->block_info, n_bytes) == n_bytes); - } + n_bytes = n_blocks * sizeof(struct yaffs_block_info); + ok = (yaffs2_checkpt_wr(dev, dev->block_info, n_bytes) == n_bytes); + if (!ok) + return 0; /* Write chunk bits */ - if (ok) { - n_bytes = nBlocks * dev->chunk_bit_stride; - ok = (yaffs2_checkpt_wr(dev, dev->chunk_bits, n_bytes) == n_bytes); - } - return ok ? 1 : 0; + n_bytes = n_blocks * dev->chunk_bit_stride; + ok = (yaffs2_checkpt_wr(dev, dev->chunk_bits, n_bytes) == n_bytes); + return ok ? 1 : 0; } -static int yaffs2_rd_checkpt_dev(yaffs_dev_t *dev) +static int yaffs2_rd_checkpt_dev(struct yaffs_dev *dev) { - yaffs_checkpt_dev_t cp; - __u32 n_bytes; - __u32 nBlocks = (dev->internal_end_block - dev->internal_start_block + 1); - + struct yaffs_checkpt_dev cp; + u32 n_bytes; + u32 n_blocks = + (dev->internal_end_block - dev->internal_start_block + 1); int ok; ok = (yaffs2_checkpt_rd(dev, &cp, sizeof(cp)) == sizeof(cp)); @@ -354,26 +349,25 @@ static int yaffs2_rd_checkpt_dev(yaffs_dev_t *dev) if (cp.struct_type != sizeof(cp)) return 0; - yaffs_checkpt_dev_to_dev(dev, &cp); - n_bytes = nBlocks * sizeof(yaffs_block_info_t); + n_bytes = n_blocks * sizeof(struct yaffs_block_info); ok = (yaffs2_checkpt_rd(dev, dev->block_info, n_bytes) == n_bytes); if (!ok) return 0; - n_bytes = nBlocks * dev->chunk_bit_stride; + + n_bytes = n_blocks * dev->chunk_bit_stride; ok = (yaffs2_checkpt_rd(dev, dev->chunk_bits, n_bytes) == n_bytes); return ok ? 1 : 0; } -static void yaffs2_obj_checkpt_obj(yaffs_checkpt_obj_t *cp, - yaffs_obj_t *obj) +static void yaffs2_obj_checkpt_obj(struct yaffs_checkpt_obj *cp, + struct yaffs_obj *obj) { - cp->obj_id = obj->obj_id; cp->parent_id = (obj->parent) ? obj->parent->obj_id : 0; cp->hdr_chunk = obj->hdr_chunk; @@ -393,36 +387,35 @@ static void yaffs2_obj_checkpt_obj(yaffs_checkpt_obj_t *cp, cp->size_or_equiv_obj = obj->variant.hardlink_variant.equiv_id; } -static int taffs2_checkpt_obj_to_obj(yaffs_obj_t *obj, yaffs_checkpt_obj_t *cp) +static int yaffs2_checkpt_obj_to_obj(struct yaffs_obj *obj, + struct yaffs_checkpt_obj *cp) { - - yaffs_obj_t *parent; + struct yaffs_obj *parent; if (obj->variant_type != cp->variant_type) { - T(YAFFS_TRACE_ERROR, (TSTR("Checkpoint read object %d type %d " - TCONT("chunk %d does not match existing object type %d") - TENDSTR), cp->obj_id, cp->variant_type, cp->hdr_chunk, - obj->variant_type)); + yaffs_trace(YAFFS_TRACE_ERROR, + "Checkpoint read object %d type %d chunk %d does not match existing object type %d", + cp->obj_id, cp->variant_type, cp->hdr_chunk, + obj->variant_type); return 0; } obj->obj_id = cp->obj_id; if (cp->parent_id) - parent = yaffs_find_or_create_by_number( - obj->my_dev, - cp->parent_id, - YAFFS_OBJECT_TYPE_DIRECTORY); + parent = yaffs_find_or_create_by_number(obj->my_dev, + cp->parent_id, + YAFFS_OBJECT_TYPE_DIRECTORY); else parent = NULL; if (parent) { if (parent->variant_type != 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->obj_id, cp->parent_id, cp->variant_type, - cp->hdr_chunk, parent->variant_type)); + yaffs_trace(YAFFS_TRACE_ALWAYS, + "Checkpoint read object %d parent %d type %d chunk %d Parent type, %d, not directory", + cp->obj_id, cp->parent_id, + cp->variant_type, cp->hdr_chunk, + parent->variant_type); return 0; } yaffs_add_obj_to_dir(parent, obj); @@ -449,133 +442,139 @@ static int taffs2_checkpt_obj_to_obj(yaffs_obj_t *obj, yaffs_checkpt_obj_t *cp) return 1; } - - -static int yaffs2_checkpt_tnode_worker(yaffs_obj_t *in, yaffs_tnode_t *tn, - __u32 level, int chunk_offset) +static int yaffs2_checkpt_tnode_worker(struct yaffs_obj *in, + struct yaffs_tnode *tn, u32 level, + int chunk_offset) { int i; - yaffs_dev_t *dev = in->my_dev; + struct yaffs_dev *dev = in->my_dev; int ok = 1; - - if (tn) { - if (level > 0) { - - for (i = 0; i < YAFFS_NTNODES_INTERNAL && ok; i++) { - if (tn->internal[i]) { - ok = yaffs2_checkpt_tnode_worker(in, - tn->internal[i], - level - 1, - (chunk_offset<<YAFFS_TNODES_INTERNAL_BITS) + i); - } - } - } else if (level == 0) { - __u32 baseOffset = chunk_offset << YAFFS_TNODES_LEVEL0_BITS; - ok = (yaffs2_checkpt_wr(dev, &baseOffset, sizeof(baseOffset)) == sizeof(baseOffset)); - if (ok) - ok = (yaffs2_checkpt_wr(dev, tn, dev->tnode_size) == dev->tnode_size); + u32 base_offset; + + if (!tn) + return 1; + + if (level > 0) { + for (i = 0; i < YAFFS_NTNODES_INTERNAL && ok; i++) { + if (!tn->internal[i]) + continue; + ok = yaffs2_checkpt_tnode_worker(in, + tn->internal[i], + level - 1, + (chunk_offset << + YAFFS_TNODES_INTERNAL_BITS) + i); } + return ok; } - return ok; + /* Level 0 tnode */ + base_offset = chunk_offset << YAFFS_TNODES_LEVEL0_BITS; + ok = (yaffs2_checkpt_wr(dev, &base_offset, sizeof(base_offset)) == + sizeof(base_offset)); + if (ok) + ok = (yaffs2_checkpt_wr(dev, tn, dev->tnode_size) == + dev->tnode_size); + return ok; } -static int yaffs2_wr_checkpt_tnodes(yaffs_obj_t *obj) +static int yaffs2_wr_checkpt_tnodes(struct yaffs_obj *obj) { - __u32 endMarker = ~0; + u32 end_marker = ~0; int ok = 1; - if (obj->variant_type == YAFFS_OBJECT_TYPE_FILE) { - ok = yaffs2_checkpt_tnode_worker(obj, - obj->variant.file_variant.top, - obj->variant.file_variant.top_level, - 0); - if (ok) - ok = (yaffs2_checkpt_wr(obj->my_dev, &endMarker, sizeof(endMarker)) == - sizeof(endMarker)); - } + if (obj->variant_type != YAFFS_OBJECT_TYPE_FILE) + return ok; + + ok = yaffs2_checkpt_tnode_worker(obj, + obj->variant.file_variant.top, + obj->variant.file_variant. + top_level, 0); + if (ok) + ok = (yaffs2_checkpt_wr(obj->my_dev, &end_marker, + sizeof(end_marker)) == sizeof(end_marker)); return ok ? 1 : 0; } -static int yaffs2_rd_checkpt_tnodes(yaffs_obj_t *obj) +static int yaffs2_rd_checkpt_tnodes(struct yaffs_obj *obj) { - __u32 baseChunk; + u32 base_chunk; int ok = 1; - yaffs_dev_t *dev = obj->my_dev; - yaffs_file_s *fileStructPtr = &obj->variant.file_variant; - yaffs_tnode_t *tn; + struct yaffs_dev *dev = obj->my_dev; + struct yaffs_file_var *file_stuct_ptr = &obj->variant.file_variant; + struct yaffs_tnode *tn; int nread = 0; - ok = (yaffs2_checkpt_rd(dev, &baseChunk, sizeof(baseChunk)) == sizeof(baseChunk)); + ok = (yaffs2_checkpt_rd(dev, &base_chunk, sizeof(base_chunk)) == + sizeof(base_chunk)); - while (ok && (~baseChunk)) { + while (ok && (~base_chunk)) { nread++; /* Read level 0 tnode */ - tn = yaffs_get_tnode(dev); - if (tn){ - ok = (yaffs2_checkpt_rd(dev, tn, dev->tnode_size) == dev->tnode_size); - } else + if (tn) + ok = (yaffs2_checkpt_rd(dev, tn, dev->tnode_size) == + dev->tnode_size); + else ok = 0; if (tn && ok) ok = yaffs_add_find_tnode_0(dev, - fileStructPtr, - baseChunk, - tn) ? 1 : 0; + file_stuct_ptr, + base_chunk, tn) ? 1 : 0; if (ok) - ok = (yaffs2_checkpt_rd(dev, &baseChunk, sizeof(baseChunk)) == sizeof(baseChunk)); - + ok = (yaffs2_checkpt_rd + (dev, &base_chunk, + sizeof(base_chunk)) == sizeof(base_chunk)); } - T(YAFFS_TRACE_CHECKPOINT, ( - TSTR("Checkpoint read tnodes %d records, last %d. ok %d" TENDSTR), - nread, baseChunk, ok)); + yaffs_trace(YAFFS_TRACE_CHECKPOINT, + "Checkpoint read tnodes %d records, last %d. ok %d", + nread, base_chunk, ok); return ok ? 1 : 0; } - -static int yaffs2_wr_checkpt_objs(yaffs_dev_t *dev) +static int yaffs2_wr_checkpt_objs(struct yaffs_dev *dev) { - yaffs_obj_t *obj; - yaffs_checkpt_obj_t cp; + struct yaffs_obj *obj; + struct yaffs_checkpt_obj cp; int i; int ok = 1; - struct ylist_head *lh; - + struct list_head *lh; /* Iterate through the objects in each hash entry, * dumping them to the checkpointing stream. */ - for (i = 0; ok && i < YAFFS_NOBJECT_BUCKETS; i++) { - ylist_for_each(lh, &dev->obj_bucket[i].list) { - if (lh) { - obj = ylist_entry(lh, yaffs_obj_t, hash_link); - if (!obj->defered_free) { - yaffs2_obj_checkpt_obj(&cp, obj); - cp.struct_type = sizeof(cp); - - T(YAFFS_TRACE_CHECKPOINT, ( - TSTR("Checkpoint write object %d parent %d type %d chunk %d obj addr %p" TENDSTR), - cp.obj_id, cp.parent_id, cp.variant_type, cp.hdr_chunk, obj)); - - ok = (yaffs2_checkpt_wr(dev, &cp, sizeof(cp)) == sizeof(cp)); - - if (ok && obj->variant_type == YAFFS_OBJECT_TYPE_FILE) - ok = yaffs2_wr_checkpt_tnodes(obj); - } + for (i = 0; ok && i < YAFFS_NOBJECT_BUCKETS; i++) { + list_for_each(lh, &dev->obj_bucket[i].list) { + obj = list_entry(lh, struct yaffs_obj, hash_link); + if (!obj->defered_free) { + yaffs2_obj_checkpt_obj(&cp, obj); + cp.struct_type = sizeof(cp); + + yaffs_trace(YAFFS_TRACE_CHECKPOINT, + "Checkpoint write object %d parent %d type %d chunk %d obj addr %p", + cp.obj_id, cp.parent_id, + cp.variant_type, cp.hdr_chunk, obj); + + ok = (yaffs2_checkpt_wr(dev, &cp, + sizeof(cp)) == sizeof(cp)); + + if (ok && + obj->variant_type == + YAFFS_OBJECT_TYPE_FILE) + ok = yaffs2_wr_checkpt_tnodes(obj); } } } /* Dump end of list */ - memset(&cp, 0xFF, sizeof(yaffs_checkpt_obj_t)); + memset(&cp, 0xff, sizeof(struct yaffs_checkpt_obj)); cp.struct_type = sizeof(cp); if (ok) @@ -584,59 +583,67 @@ static int yaffs2_wr_checkpt_objs(yaffs_dev_t *dev) return ok ? 1 : 0; } -static int yaffs2_rd_checkpt_objs(yaffs_dev_t *dev) +static int yaffs2_rd_checkpt_objs(struct yaffs_dev *dev) { - yaffs_obj_t *obj; - yaffs_checkpt_obj_t cp; + struct yaffs_obj *obj; + struct yaffs_checkpt_obj cp; int ok = 1; int done = 0; - yaffs_obj_t *hard_list = NULL; + LIST_HEAD(hard_list); + while (ok && !done) { ok = (yaffs2_checkpt_rd(dev, &cp, sizeof(cp)) == sizeof(cp)); if (cp.struct_type != sizeof(cp)) { - T(YAFFS_TRACE_CHECKPOINT, (TSTR("struct size %d instead of %d ok %d"TENDSTR), - cp.struct_type, (int)sizeof(cp), ok)); + yaffs_trace(YAFFS_TRACE_CHECKPOINT, + "struct size %d instead of %d ok %d", + cp.struct_type, (int)sizeof(cp), ok); ok = 0; } - T(YAFFS_TRACE_CHECKPOINT, (TSTR("Checkpoint read object %d parent %d type %d chunk %d " TENDSTR), - cp.obj_id, cp.parent_id, cp.variant_type, cp.hdr_chunk)); + yaffs_trace(YAFFS_TRACE_CHECKPOINT, + "Checkpoint read object %d parent %d type %d chunk %d ", + cp.obj_id, cp.parent_id, cp.variant_type, + cp.hdr_chunk); - if (ok && cp.obj_id == ~0) + if (ok && cp.obj_id == ~0) { done = 1; - else if (ok) { - obj = yaffs_find_or_create_by_number(dev, cp.obj_id, cp.variant_type); + } else if (ok) { + obj = + yaffs_find_or_create_by_number(dev, cp.obj_id, + cp.variant_type); if (obj) { - ok = taffs2_checkpt_obj_to_obj(obj, &cp); + ok = yaffs2_checkpt_obj_to_obj(obj, &cp); if (!ok) break; - if (obj->variant_type == YAFFS_OBJECT_TYPE_FILE) { + if (obj->variant_type == + YAFFS_OBJECT_TYPE_FILE) { ok = yaffs2_rd_checkpt_tnodes(obj); - } else if (obj->variant_type == YAFFS_OBJECT_TYPE_HARDLINK) { - obj->hard_links.next = - (struct ylist_head *) hard_list; - hard_list = obj; + } else if (obj->variant_type == + YAFFS_OBJECT_TYPE_HARDLINK) { + list_add(&obj->hard_links, &hard_list); } - } else + } else { ok = 0; + } } } if (ok) - yaffs_link_fixup(dev, hard_list); + yaffs_link_fixup(dev, &hard_list); return ok ? 1 : 0; } -static int yaffs2_wr_checkpt_sum(yaffs_dev_t *dev) +static int yaffs2_wr_checkpt_sum(struct yaffs_dev *dev) { - __u32 checkpt_sum; + u32 checkpt_sum; int ok; yaffs2_get_checkpt_sum(dev, &checkpt_sum); - ok = (yaffs2_checkpt_wr(dev, &checkpt_sum, sizeof(checkpt_sum)) == sizeof(checkpt_sum)); + ok = (yaffs2_checkpt_wr(dev, &checkpt_sum, sizeof(checkpt_sum)) == + sizeof(checkpt_sum)); if (!ok) return 0; @@ -644,15 +651,16 @@ static int yaffs2_wr_checkpt_sum(yaffs_dev_t *dev) return 1; } -static int yaffs2_rd_checkpt_sum(yaffs_dev_t *dev) +static int yaffs2_rd_checkpt_sum(struct yaffs_dev *dev) { - __u32 checkpt_sum0; - __u32 checkpt_sum1; + u32 checkpt_sum0; + u32 checkpt_sum1; int ok; yaffs2_get_checkpt_sum(dev, &checkpt_sum0); - ok = (yaffs2_checkpt_rd(dev, &checkpt_sum1, sizeof(checkpt_sum1)) == sizeof(checkpt_sum1)); + ok = (yaffs2_checkpt_rd(dev, &checkpt_sum1, sizeof(checkpt_sum1)) == + sizeof(checkpt_sum1)); if (!ok) return 0; @@ -663,13 +671,13 @@ static int yaffs2_rd_checkpt_sum(yaffs_dev_t *dev) return 1; } - -static int yaffs2_wr_checkpt_data(yaffs_dev_t *dev) +static int yaffs2_wr_checkpt_data(struct yaffs_dev *dev) { int ok = 1; if (!yaffs2_checkpt_required(dev)) { - T(YAFFS_TRACE_CHECKPOINT, (TSTR("skipping checkpoint write" TENDSTR))); + yaffs_trace(YAFFS_TRACE_CHECKPOINT, + "skipping checkpoint write"); ok = 0; } @@ -677,19 +685,23 @@ static int yaffs2_wr_checkpt_data(yaffs_dev_t *dev) ok = yaffs2_checkpt_open(dev, 1); if (ok) { - T(YAFFS_TRACE_CHECKPOINT, (TSTR("write checkpoint validity" TENDSTR))); + yaffs_trace(YAFFS_TRACE_CHECKPOINT, + "write checkpoint validity"); ok = yaffs2_wr_checkpt_validity_marker(dev, 1); } if (ok) { - T(YAFFS_TRACE_CHECKPOINT, (TSTR("write checkpoint device" TENDSTR))); + yaffs_trace(YAFFS_TRACE_CHECKPOINT, + "write checkpoint device"); ok = yaffs2_wr_checkpt_dev(dev); } if (ok) { - T(YAFFS_TRACE_CHECKPOINT, (TSTR("write checkpoint objects" TENDSTR))); + yaffs_trace(YAFFS_TRACE_CHECKPOINT, + "write checkpoint objects"); ok = yaffs2_wr_checkpt_objs(dev); } if (ok) { - T(YAFFS_TRACE_CHECKPOINT, (TSTR("write checkpoint validity" TENDSTR))); + yaffs_trace(YAFFS_TRACE_CHECKPOINT, + "write checkpoint validity"); ok = yaffs2_wr_checkpt_validity_marker(dev, 0); } @@ -707,15 +719,16 @@ static int yaffs2_wr_checkpt_data(yaffs_dev_t *dev) return dev->is_checkpointed; } -static int yaffs2_rd_checkpt_data(yaffs_dev_t *dev) +static int yaffs2_rd_checkpt_data(struct yaffs_dev *dev) { int ok = 1; - - if(!dev->param.is_yaffs2) + + if (!dev->param.is_yaffs2) ok = 0; if (ok && dev->param.skip_checkpt_rd) { - T(YAFFS_TRACE_CHECKPOINT, (TSTR("skipping checkpoint read" TENDSTR))); + yaffs_trace(YAFFS_TRACE_CHECKPOINT, + "skipping checkpoint read"); ok = 0; } @@ -723,25 +736,30 @@ static int yaffs2_rd_checkpt_data(yaffs_dev_t *dev) ok = yaffs2_checkpt_open(dev, 0); /* open for read */ if (ok) { - T(YAFFS_TRACE_CHECKPOINT, (TSTR("read checkpoint validity" TENDSTR))); - ok = yaffs2_rd_checkpt_validty_marker(dev, 1); + yaffs_trace(YAFFS_TRACE_CHECKPOINT, + "read checkpoint validity"); + ok = yaffs2_rd_checkpt_validity_marker(dev, 1); } if (ok) { - T(YAFFS_TRACE_CHECKPOINT, (TSTR("read checkpoint device" TENDSTR))); + yaffs_trace(YAFFS_TRACE_CHECKPOINT, + "read checkpoint device"); ok = yaffs2_rd_checkpt_dev(dev); } if (ok) { - T(YAFFS_TRACE_CHECKPOINT, (TSTR("read checkpoint objects" TENDSTR))); + yaffs_trace(YAFFS_TRACE_CHECKPOINT, + "read checkpoint objects"); ok = yaffs2_rd_checkpt_objs(dev); } if (ok) { - T(YAFFS_TRACE_CHECKPOINT, (TSTR("read checkpoint validity" TENDSTR))); - ok = yaffs2_rd_checkpt_validty_marker(dev, 0); + yaffs_trace(YAFFS_TRACE_CHECKPOINT, + "read checkpoint validity"); + ok = yaffs2_rd_checkpt_validity_marker(dev, 0); } if (ok) { ok = yaffs2_rd_checkpt_sum(dev); - T(YAFFS_TRACE_CHECKPOINT, (TSTR("read checkpoint checksum %d" TENDSTR), ok)); + yaffs_trace(YAFFS_TRACE_CHECKPOINT, + "read checkpoint checksum %d", ok); } if (!yaffs_checkpt_close(dev)) @@ -753,13 +771,11 @@ static int yaffs2_rd_checkpt_data(yaffs_dev_t *dev) dev->is_checkpointed = 0; return ok ? 1 : 0; - } -void yaffs2_checkpt_invalidate(yaffs_dev_t *dev) +void yaffs2_checkpt_invalidate(struct yaffs_dev *dev) { - if (dev->is_checkpointed || - dev->blocks_in_checkpt > 0) { + if (dev->is_checkpointed || dev->blocks_in_checkpt > 0) { dev->is_checkpointed = 0; yaffs2_checkpt_invalidate_stream(dev); } @@ -767,11 +783,11 @@ void yaffs2_checkpt_invalidate(yaffs_dev_t *dev) dev->param.sb_dirty_fn(dev); } - -int yaffs_checkpoint_save(yaffs_dev_t *dev) +int yaffs_checkpoint_save(struct yaffs_dev *dev) { - - T(YAFFS_TRACE_CHECKPOINT, (TSTR("save entry: is_checkpointed %d"TENDSTR), dev->is_checkpointed)); + yaffs_trace(YAFFS_TRACE_CHECKPOINT, + "save entry: is_checkpointed %d", + dev->is_checkpointed); yaffs_verify_objects(dev); yaffs_verify_blocks(dev); @@ -782,15 +798,20 @@ int yaffs_checkpoint_save(yaffs_dev_t *dev) yaffs2_wr_checkpt_data(dev); } - T(YAFFS_TRACE_ALWAYS, (TSTR("save exit: is_checkpointed %d"TENDSTR), dev->is_checkpointed)); + yaffs_trace(YAFFS_TRACE_CHECKPOINT | YAFFS_TRACE_MOUNT, + "save exit: is_checkpointed %d", + dev->is_checkpointed); return dev->is_checkpointed; } -int yaffs2_checkpt_restore(yaffs_dev_t *dev) +int yaffs2_checkpt_restore(struct yaffs_dev *dev) { int retval; - T(YAFFS_TRACE_CHECKPOINT, (TSTR("restore entry: is_checkpointed %d"TENDSTR), dev->is_checkpointed)); + + yaffs_trace(YAFFS_TRACE_CHECKPOINT, + "restore entry: is_checkpointed %d", + dev->is_checkpointed); retval = yaffs2_rd_checkpt_data(dev); @@ -800,177 +821,576 @@ int yaffs2_checkpt_restore(yaffs_dev_t *dev) yaffs_verify_free_chunks(dev); } - T(YAFFS_TRACE_CHECKPOINT, (TSTR("restore exit: is_checkpointed %d"TENDSTR), dev->is_checkpointed)); + yaffs_trace(YAFFS_TRACE_CHECKPOINT, + "restore exit: is_checkpointed %d", + dev->is_checkpointed); return retval; } -int yaffs2_handle_hole(yaffs_obj_t *obj, loff_t new_size) +int yaffs2_handle_hole(struct yaffs_obj *obj, loff_t new_size) { - /* if newsSize > oldFileSize. + /* if new_size > old_file_size. * We're going to be writing a hole. - * If the hole is small then write zeros otherwise write a start of hole marker. + * If the hole is small then write zeros otherwise write a start + * of hole marker. */ - - - loff_t oldFileSize; - int increase; - int smallHole ; + loff_t old_file_size; + loff_t increase; + int small_hole; int result = YAFFS_OK; - yaffs_dev_t *dev = NULL; + struct yaffs_dev *dev = NULL; + u8 *local_buffer = NULL; + int small_increase_ok = 0; - __u8 *localBuffer = NULL; - - int smallIncreaseOk = 0; - - if(!obj) + if (!obj) return YAFFS_FAIL; - if(obj->variant_type != YAFFS_OBJECT_TYPE_FILE) + if (obj->variant_type != YAFFS_OBJECT_TYPE_FILE) return YAFFS_FAIL; - + dev = obj->my_dev; - + /* Bail out if not yaffs2 mode */ - if(!dev->param.is_yaffs2) + if (!dev->param.is_yaffs2) return YAFFS_OK; - oldFileSize = obj->variant.file_variant.file_size; + old_file_size = obj->variant.file_variant.file_size; - if (new_size <= oldFileSize) + if (new_size <= old_file_size) return YAFFS_OK; - increase = new_size - oldFileSize; + increase = new_size - old_file_size; - if(increase < YAFFS_SMALL_HOLE_THRESHOLD * dev->data_bytes_per_chunk && - yaffs_check_alloc_available(dev, YAFFS_SMALL_HOLE_THRESHOLD + 1)) - smallHole = 1; + if (increase < YAFFS_SMALL_HOLE_THRESHOLD * dev->data_bytes_per_chunk && + yaffs_check_alloc_available(dev, YAFFS_SMALL_HOLE_THRESHOLD + 1)) + small_hole = 1; else - smallHole = 0; + small_hole = 0; - if(smallHole) - localBuffer= yaffs_get_temp_buffer(dev, __LINE__); - - if(localBuffer){ + if (small_hole) + local_buffer = yaffs_get_temp_buffer(dev); + + if (local_buffer) { /* fill hole with zero bytes */ - int pos = oldFileSize; - int thisWrite; + loff_t pos = old_file_size; + int this_write; int written; - memset(localBuffer,0,dev->data_bytes_per_chunk); - smallIncreaseOk = 1; - - while(increase > 0 && smallIncreaseOk){ - thisWrite = increase; - if(thisWrite > dev->data_bytes_per_chunk) - thisWrite = dev->data_bytes_per_chunk; - written = yaffs_do_file_wr(obj,localBuffer,pos,thisWrite,0); - if(written == thisWrite){ - pos += thisWrite; - increase -= thisWrite; - } else - smallIncreaseOk = 0; + memset(local_buffer, 0, dev->data_bytes_per_chunk); + small_increase_ok = 1; + + while (increase > 0 && small_increase_ok) { + this_write = increase; + if (this_write > dev->data_bytes_per_chunk) + this_write = dev->data_bytes_per_chunk; + written = + yaffs_do_file_wr(obj, local_buffer, pos, this_write, + 0); + if (written == this_write) { + pos += this_write; + increase -= this_write; + } else { + small_increase_ok = 0; + } } - yaffs_release_temp_buffer(dev,localBuffer,__LINE__); + yaffs_release_temp_buffer(dev, local_buffer); - /* If we were out of space then reverse any chunks we've added */ - if(!smallIncreaseOk) - yaffs_resize_file_down(obj, oldFileSize); + /* If out of space then reverse any chunks we've added */ + if (!small_increase_ok) + yaffs_resize_file_down(obj, old_file_size); } - - if (!smallIncreaseOk && - obj->parent && - obj->parent->obj_id != YAFFS_OBJECTID_UNLINKED && - obj->parent->obj_id != YAFFS_OBJECTID_DELETED){ + + if (!small_increase_ok && + obj->parent && + obj->parent->obj_id != YAFFS_OBJECTID_UNLINKED && + obj->parent->obj_id != YAFFS_OBJECTID_DELETED) { /* Write a hole start header with the old file size */ yaffs_update_oh(obj, NULL, 0, 1, 0, NULL); } return result; - } - -typedef struct { +struct yaffs_block_index { int seq; int block; -} yaffs_BlockIndex; - +}; static int yaffs2_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; + int aseq = ((struct yaffs_block_index *)a)->seq; + int bseq = ((struct yaffs_block_index *)b)->seq; + int ablock = ((struct yaffs_block_index *)a)->block; + int bblock = ((struct yaffs_block_index *)b)->block; + if (aseq == bseq) return ablock - bblock; - else - return aseq - bseq; + + return aseq - bseq; } -int yaffs2_scan_backwards(yaffs_dev_t *dev) +static inline int yaffs2_scan_chunk(struct yaffs_dev *dev, + struct yaffs_block_info *bi, + int blk, int chunk_in_block, + int *found_chunks, + u8 *chunk_data, + struct list_head *hard_list, + int summary_available) { - yaffs_ext_tags tags; - int blk; - int blockIterator; - int startIterator; - int endIterator; - int nBlocksToScan = 0; - - int chunk; - int result; - int c; - int deleted; - yaffs_block_state_t state; - yaffs_obj_t *hard_list = NULL; - yaffs_block_info_t *bi; - __u32 seq_number; - yaffs_obj_header *oh; - yaffs_obj_t *in; - yaffs_obj_t *parent; - int nBlocks = dev->internal_end_block - dev->internal_start_block + 1; - int itsUnlinked; - __u8 *chunkData; - - int file_size; - int is_shrink; - int foundChunksInBlock; + struct yaffs_obj_hdr *oh; + struct yaffs_obj *in; + struct yaffs_obj *parent; int equiv_id; + loff_t file_size; + int is_shrink; + int is_unlinked; + struct yaffs_ext_tags tags; + int result; int alloc_failed = 0; + int chunk = blk * dev->param.chunks_per_block + chunk_in_block; + struct yaffs_file_var *file_var; + struct yaffs_hardlink_var *hl_var; + struct yaffs_symlink_var *sl_var; + + if (summary_available) { + result = yaffs_summary_fetch(dev, &tags, chunk_in_block); + tags.seq_number = bi->seq_number; + } + + if (!summary_available || tags.obj_id == 0) { + result = yaffs_rd_chunk_tags_nand(dev, chunk, NULL, &tags); + dev->tags_used++; + } else { + dev->summary_used++; + } + + /* Let's have a good look at this chunk... */ + + if (!tags.chunk_used) { + /* 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 (*found_chunks) { + /* This is a chunk that was skipped due + * to failing the erased check */ + } else if (chunk_in_block == 0) { + /* We're looking at the first chunk in + * the block so the block is unused */ + bi->block_state = YAFFS_BLOCK_STATE_EMPTY; + dev->n_erased_blocks++; + } else { + if (bi->block_state == YAFFS_BLOCK_STATE_NEEDS_SCAN || + bi->block_state == YAFFS_BLOCK_STATE_ALLOCATING) { + if (dev->seq_number == bi->seq_number) { + /* Allocating from this block*/ + yaffs_trace(YAFFS_TRACE_SCAN, + " Allocating from %d %d", + blk, chunk_in_block); + + bi->block_state = + YAFFS_BLOCK_STATE_ALLOCATING; + dev->alloc_block = blk; + dev->alloc_page = chunk_in_block; + dev->alloc_block_finder = blk; + } else { + /* This is a partially written block + * that is not the current + * allocation block. + */ + yaffs_trace(YAFFS_TRACE_SCAN, + "Partially written block %d detected. gc will fix this.", + blk); + } + } + } + + dev->n_free_chunks++; + + } else if (tags.ecc_result == + YAFFS_ECC_RESULT_UNFIXED) { + yaffs_trace(YAFFS_TRACE_SCAN, + " Unfixed ECC in chunk(%d:%d), chunk ignored", + blk, chunk_in_block); + dev->n_free_chunks++; + } else if (tags.obj_id > YAFFS_MAX_OBJECT_ID || + tags.chunk_id > YAFFS_MAX_CHUNK_ID || + tags.obj_id == YAFFS_OBJECTID_SUMMARY || + (tags.chunk_id > 0 && + tags.n_bytes > dev->data_bytes_per_chunk) || + tags.seq_number != bi->seq_number) { + yaffs_trace(YAFFS_TRACE_SCAN, + "Chunk (%d:%d) with bad tags:obj = %d, chunk_id = %d, n_bytes = %d, ignored", + blk, chunk_in_block, tags.obj_id, + tags.chunk_id, tags.n_bytes); + dev->n_free_chunks++; + } else if (tags.chunk_id > 0) { + /* chunk_id > 0 so it is a data chunk... */ + loff_t endpos; + loff_t chunk_base = (tags.chunk_id - 1) * + dev->data_bytes_per_chunk; + + *found_chunks = 1; + + yaffs_set_chunk_bit(dev, blk, chunk_in_block); + bi->pages_in_use++; + + in = yaffs_find_or_create_by_number(dev, + tags.obj_id, + YAFFS_OBJECT_TYPE_FILE); + if (!in) + /* Out of memory */ + alloc_failed = 1; + + if (in && + in->variant_type == YAFFS_OBJECT_TYPE_FILE && + chunk_base < in->variant.file_variant.shrink_size) { + /* This has not been invalidated by + * a resize */ + if (!yaffs_put_chunk_in_file(in, tags.chunk_id, + 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 = chunk_base + tags.n_bytes; + + if (!in->valid && + in->variant.file_variant.scanned_size < endpos) { + in->variant.file_variant. + scanned_size = endpos; + in->variant.file_variant. + file_size = endpos; + } + } else if (in) { + /* This chunk has been invalidated by a + * resize, or a past file deletion + * so delete the chunk*/ + yaffs_chunk_del(dev, chunk, 1, __LINE__); + } + } else { + /* chunk_id == 0, so it is an ObjectHeader. + * Thus, we read in the object header and make + * the object + */ + *found_chunks = 1; + + yaffs_set_chunk_bit(dev, blk, chunk_in_block); + bi->pages_in_use++; + + oh = NULL; + in = NULL; + + if (tags.extra_available) { + in = yaffs_find_or_create_by_number(dev, + tags.obj_id, + tags.extra_obj_type); + if (!in) + alloc_failed = 1; + } + + if (!in || + (!in->valid && dev->param.disable_lazy_load) || + tags.extra_shadows || + (!in->valid && (tags.obj_id == YAFFS_OBJECTID_ROOT || + tags.obj_id == 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_rd_chunk_tags_nand(dev, + chunk, + chunk_data, + NULL); + + oh = (struct yaffs_obj_hdr *)chunk_data; + + if (dev->param.inband_tags) { + /* Fix up the header if they got + * corrupted by inband tags */ + oh->shadows_obj = + oh->inband_shadowed_obj_id; + oh->is_shrink = + oh->inband_is_shrink; + } + + if (!in) { + in = yaffs_find_or_create_by_number(dev, + tags.obj_id, oh->type); + if (!in) + alloc_failed = 1; + } + } + + if (!in) { + /* TODO Hoosterman we have a problem! */ + yaffs_trace(YAFFS_TRACE_ERROR, + "yaffs tragedy: Could not make object for object %d at chunk %d during scan", + tags.obj_id, chunk); + return YAFFS_FAIL; + } + 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->variant_type == YAFFS_OBJECT_TYPE_FILE) && + ((oh && oh->type == YAFFS_OBJECT_TYPE_FILE) || + (tags.extra_available && + tags.extra_obj_type == YAFFS_OBJECT_TYPE_FILE) + )) { + loff_t this_size = (oh) ? + yaffs_oh_to_size(oh) : + tags.extra_file_size; + u32 parent_obj_id = (oh) ? + oh->parent_obj_id : + tags.extra_parent_id; + + is_shrink = (oh) ? + oh->is_shrink : + tags.extra_is_shrink; + + /* If it is deleted (unlinked + * at start also means deleted) + * we treat the file size as + * being zeroed at this point. + */ + if (parent_obj_id == YAFFS_OBJECTID_DELETED || + parent_obj_id == YAFFS_OBJECTID_UNLINKED) { + this_size = 0; + is_shrink = 1; + } + + if (is_shrink && + in->variant.file_variant.shrink_size > + this_size) + in->variant.file_variant.shrink_size = + this_size; + + if (is_shrink) + bi->has_shrink_hdr = 1; + } + /* Use existing - destroy this one. */ + yaffs_chunk_del(dev, chunk, 1, __LINE__); + } + + if (!in->valid && in->variant_type != + (oh ? oh->type : tags.extra_obj_type)) + yaffs_trace(YAFFS_TRACE_ERROR, + "yaffs tragedy: Bad object type, %d != %d, for object %d at chunk %d during scan", + oh ? oh->type : tags.extra_obj_type, + in->variant_type, tags.obj_id, + chunk); + + if (!in->valid && + (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; + + if (oh) { + in->yst_mode = oh->yst_mode; + yaffs_load_attribs(in, oh); + in->lazy_loaded = 0; + } else { + in->lazy_loaded = 1; + } + in->hdr_chunk = chunk; + + } else if (!in->valid) { + /* we need to load this info */ + in->valid = 1; + in->hdr_chunk = chunk; + if (oh) { + in->variant_type = oh->type; + in->yst_mode = oh->yst_mode; + yaffs_load_attribs(in, oh); + + if (oh->shadows_obj > 0) + yaffs_handle_shadowed_obj(dev, + oh->shadows_obj, 1); + + yaffs_set_obj_name_from_oh(in, oh); + parent = yaffs_find_or_create_by_number(dev, + oh->parent_obj_id, + YAFFS_OBJECT_TYPE_DIRECTORY); + file_size = yaffs_oh_to_size(oh); + is_shrink = oh->is_shrink; + equiv_id = oh->equiv_id; + } else { + in->variant_type = tags.extra_obj_type; + parent = yaffs_find_or_create_by_number(dev, + tags.extra_parent_id, + YAFFS_OBJECT_TYPE_DIRECTORY); + file_size = tags.extra_file_size; + is_shrink = tags.extra_is_shrink; + equiv_id = tags.extra_equiv_id; + in->lazy_loaded = 1; + } + in->dirty = 0; - yaffs_BlockIndex *blockIndex = NULL; - int altBlockIndex = 0; + if (!parent) + alloc_failed = 1; + + /* directory stuff... + * hook up to parent + */ + + if (parent && + parent->variant_type == YAFFS_OBJECT_TYPE_UNKNOWN) { + /* Set up as a directory */ + 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.... + * Trying to use a non-directory as a directory + */ + + 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); + + is_unlinked = (parent == dev->del_dir) || + (parent == dev->unlinked_dir); + + if (is_shrink) + /* Mark the block */ + bi->has_shrink_hdr = 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->variant_type) { + case YAFFS_OBJECT_TYPE_UNKNOWN: + /* Todo got a problem */ + break; + case YAFFS_OBJECT_TYPE_FILE: + file_var = &in->variant.file_variant; + if (file_var->scanned_size < file_size) { + /* This covers the case where the file + * size is greater than the data held. + * This will happen if the file is + * resized to be larger than its + * current data extents. + */ + file_var->file_size = file_size; + file_var->scanned_size = file_size; + } + + if (file_var->shrink_size > file_size) + file_var->shrink_size = file_size; + + break; + case YAFFS_OBJECT_TYPE_HARDLINK: + hl_var = &in->variant.hardlink_variant; + if (!is_unlinked) { + hl_var->equiv_id = equiv_id; + list_add(&in->hard_links, hard_list); + } + break; + case YAFFS_OBJECT_TYPE_DIRECTORY: + /* Do nothing */ + break; + case YAFFS_OBJECT_TYPE_SPECIAL: + /* Do nothing */ + break; + case YAFFS_OBJECT_TYPE_SYMLINK: + sl_var = &in->variant.symlink_variant; + if (oh) { + sl_var->alias = + yaffs_clone_str(oh->alias); + if (!sl_var->alias) + alloc_failed = 1; + } + break; + } + } + } + return alloc_failed ? YAFFS_FAIL : YAFFS_OK; +} - T(YAFFS_TRACE_SCAN, - (TSTR - ("yaffs2_scan_backwards starts intstartblk %d intendblk %d..." - TENDSTR), dev->internal_start_block, dev->internal_end_block)); +int yaffs2_scan_backwards(struct yaffs_dev *dev) +{ + int blk; + int block_iter; + int start_iter; + int end_iter; + int n_to_scan = 0; + enum yaffs_block_state state; + int c; + int deleted; + LIST_HEAD(hard_list); + struct yaffs_block_info *bi; + u32 seq_number; + int n_blocks = dev->internal_end_block - dev->internal_start_block + 1; + u8 *chunk_data; + int found_chunks; + int alloc_failed = 0; + struct yaffs_block_index *block_index = NULL; + int alt_block_index = 0; + int summary_available; + yaffs_trace(YAFFS_TRACE_SCAN, + "yaffs2_scan_backwards starts intstartblk %d intendblk %d...", + dev->internal_start_block, dev->internal_end_block); dev->seq_number = YAFFS_LOWEST_SEQUENCE_NUMBER; - blockIndex = YMALLOC(nBlocks * sizeof(yaffs_BlockIndex)); + block_index = + kmalloc(n_blocks * sizeof(struct yaffs_block_index), GFP_NOFS); - if (!blockIndex) { - blockIndex = YMALLOC_ALT(nBlocks * sizeof(yaffs_BlockIndex)); - altBlockIndex = 1; + if (!block_index) { + block_index = + vmalloc(n_blocks * sizeof(struct yaffs_block_index)); + alt_block_index = 1; } - if (!blockIndex) { - T(YAFFS_TRACE_SCAN, - (TSTR("yaffs2_scan_backwards() could not allocate block index!" TENDSTR))); + if (!block_index) { + yaffs_trace(YAFFS_TRACE_SCAN, + "yaffs2_scan_backwards() could not allocate block index!" + ); return YAFFS_FAIL; } dev->blocks_in_checkpt = 0; - chunkData = yaffs_get_temp_buffer(dev, __LINE__); + chunk_data = yaffs_get_temp_buffer(dev); /* Scan all the blocks to determine their state */ bi = dev->block_info; - for (blk = dev->internal_start_block; blk <= dev->internal_end_block; blk++) { + for (blk = dev->internal_start_block; blk <= dev->internal_end_block; + blk++) { yaffs_clear_chunk_bits(dev, blk); bi->pages_in_use = 0; bi->soft_del_pages = 0; @@ -981,529 +1401,103 @@ int yaffs2_scan_backwards(yaffs_dev_t *dev) bi->seq_number = seq_number; if (bi->seq_number == YAFFS_SEQUENCE_CHECKPOINT_DATA) - bi->block_state = state = YAFFS_BLOCK_STATE_CHECKPOINT; + bi->block_state = YAFFS_BLOCK_STATE_CHECKPOINT; if (bi->seq_number == YAFFS_SEQUENCE_BAD_BLOCK) - bi->block_state = state = YAFFS_BLOCK_STATE_DEAD; + bi->block_state = YAFFS_BLOCK_STATE_DEAD; - T(YAFFS_TRACE_SCAN_DEBUG, - (TSTR("Block scanning block %d state %d seq %d" TENDSTR), blk, - state, seq_number)); + yaffs_trace(YAFFS_TRACE_SCAN_DEBUG, + "Block scanning block %d state %d seq %d", + blk, bi->block_state, seq_number); - - if (state == YAFFS_BLOCK_STATE_CHECKPOINT) { + if (bi->block_state == YAFFS_BLOCK_STATE_CHECKPOINT) { dev->blocks_in_checkpt++; - } 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))); + } else if (bi->block_state == YAFFS_BLOCK_STATE_DEAD) { + yaffs_trace(YAFFS_TRACE_BAD_BLOCKS, + "block %d is bad", blk); + } else if (bi->block_state == YAFFS_BLOCK_STATE_EMPTY) { + yaffs_trace(YAFFS_TRACE_SCAN_DEBUG, "Block empty "); dev->n_erased_blocks++; dev->n_free_chunks += dev->param.chunks_per_block; - } else if (state == YAFFS_BLOCK_STATE_NEEDS_SCANNING) { - + } else if (bi->block_state == + YAFFS_BLOCK_STATE_NEEDS_SCAN) { /* Determine the highest sequence number */ if (seq_number >= YAFFS_LOWEST_SEQUENCE_NUMBER && seq_number < YAFFS_HIGHEST_SEQUENCE_NUMBER) { - - blockIndex[nBlocksToScan].seq = seq_number; - blockIndex[nBlocksToScan].block = blk; - - nBlocksToScan++; - + block_index[n_to_scan].seq = seq_number; + block_index[n_to_scan].block = blk; + n_to_scan++; if (seq_number >= dev->seq_number) dev->seq_number = seq_number; } else { /* TODO: Nasty sequence number! */ - T(YAFFS_TRACE_SCAN, - (TSTR - ("Block scanning block %d has bad sequence number %d" - TENDSTR), blk, seq_number)); - + yaffs_trace(YAFFS_TRACE_SCAN, + "Block scanning block %d has bad sequence number %d", + blk, seq_number); } } bi++; } - T(YAFFS_TRACE_SCAN, - (TSTR("%d blocks to be sorted..." TENDSTR), nBlocksToScan)); - - + yaffs_trace(YAFFS_TRACE_SCAN, "%d blocks to be sorted...", n_to_scan); - YYIELD(); + cond_resched(); - /* Sort the blocks by sequence number*/ - yaffs_qsort(blockIndex, nBlocksToScan, sizeof(yaffs_BlockIndex), yaffs2_ybicmp); + /* Sort the blocks by sequence number */ + sort(block_index, n_to_scan, sizeof(struct yaffs_block_index), + yaffs2_ybicmp, NULL); - YYIELD(); + cond_resched(); - T(YAFFS_TRACE_SCAN, (TSTR("...done" TENDSTR))); + yaffs_trace(YAFFS_TRACE_SCAN, "...done"); /* 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)); + start_iter = 0; + end_iter = n_to_scan - 1; + yaffs_trace(YAFFS_TRACE_SCAN_DEBUG, "%d blocks to scan", n_to_scan); /* For each block.... backwards */ - for (blockIterator = endIterator; !alloc_failed && blockIterator >= startIterator; - blockIterator--) { + for (block_iter = end_iter; + !alloc_failed && block_iter >= start_iter; + block_iter--) { /* Cooperative multitasking! This loop can run for so long that watchdog timers expire. */ - YYIELD(); + cond_resched(); /* get the block to scan in the correct order */ - blk = blockIndex[blockIterator].block; - + blk = block_index[block_iter].block; bi = yaffs_get_block_info(dev, blk); - - - state = bi->block_state; - deleted = 0; + summary_available = yaffs_summary_read(dev, dev->sum_tags, blk); + /* For each chunk in each block that needs scanning.... */ - foundChunksInBlock = 0; - for (c = dev->param.chunks_per_block - 1; + found_chunks = 0; + if (summary_available) + c = dev->chunks_per_summary - 1; + else + c = dev->param.chunks_per_block - 1; + + for (/* c is already initialised */; !alloc_failed && c >= 0 && - (state == YAFFS_BLOCK_STATE_NEEDS_SCANNING || - state == YAFFS_BLOCK_STATE_ALLOCATING); c--) { + (bi->block_state == YAFFS_BLOCK_STATE_NEEDS_SCAN || + bi->block_state == YAFFS_BLOCK_STATE_ALLOCATING); + c--) { /* Scan backwards... * Read the tags and decide what to do */ - - chunk = blk * dev->param.chunks_per_block + c; - - result = yaffs_rd_chunk_tags_nand(dev, chunk, NULL, - &tags); - - /* Let's have a good look at this chunk... */ - - if (!tags.chunk_used) { - /* 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->n_erased_blocks++; - } else { - if (state == YAFFS_BLOCK_STATE_NEEDS_SCANNING || - state == YAFFS_BLOCK_STATE_ALLOCATING) { - if (dev->seq_number == bi->seq_number) { - /* 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->alloc_block = blk; - dev->alloc_page = c; - dev->alloc_block_finder = blk; - } else { - /* This is a partially written block that is not - * the current allocation block. - */ - - T(YAFFS_TRACE_SCAN, - (TSTR("Partially written block %d detected" TENDSTR), - blk)); - } - } - } - - dev->n_free_chunks++; - - } else if (tags.ecc_result == YAFFS_ECC_RESULT_UNFIXED) { - T(YAFFS_TRACE_SCAN, - (TSTR(" Unfixed ECC in chunk(%d:%d), chunk ignored"TENDSTR), - blk, c)); - - dev->n_free_chunks++; - - } else if (tags.obj_id > YAFFS_MAX_OBJECT_ID || - tags.chunk_id > YAFFS_MAX_CHUNK_ID || - (tags.chunk_id > 0 && tags.n_bytes > dev->data_bytes_per_chunk) || - tags.seq_number != bi->seq_number ) { - T(YAFFS_TRACE_SCAN, - (TSTR("Chunk (%d:%d) with bad tags:obj = %d, chunk_id = %d, n_bytes = %d, ignored"TENDSTR), - blk, c,tags.obj_id, tags.chunk_id, tags.n_bytes)); - - dev->n_free_chunks++; - - } else if (tags.chunk_id > 0) { - /* chunk_id > 0 so it is a data chunk... */ - unsigned int endpos; - __u32 chunkBase = - (tags.chunk_id - 1) * dev->data_bytes_per_chunk; - - foundChunksInBlock = 1; - - - yaffs_set_chunk_bit(dev, blk, c); - bi->pages_in_use++; - - in = yaffs_find_or_create_by_number(dev, - tags. - obj_id, - YAFFS_OBJECT_TYPE_FILE); - if (!in) { - /* Out of memory */ - alloc_failed = 1; - } - - if (in && - in->variant_type == YAFFS_OBJECT_TYPE_FILE - && chunkBase < in->variant.file_variant.shrink_size) { - /* This has not been invalidated by a resize */ - if (!yaffs_put_chunk_in_file(in, tags.chunk_id, 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 = chunkBase + tags.n_bytes; - - if (!in->valid && /* have not got an object header yet */ - in->variant.file_variant.scanned_size < endpos) { - in->variant.file_variant.scanned_size = endpos; - in->variant.file_variant.file_size = endpos; - } - - } else if (in) { - /* This chunk has been invalidated by a resize, or a past file deletion - * so delete the chunk*/ - yaffs_chunk_del(dev, chunk, 1, __LINE__); - - } - } else { - /* chunk_id == 0, so it is an ObjectHeader. - * Thus, we read in the object header and make the object - */ - foundChunksInBlock = 1; - - yaffs_set_chunk_bit(dev, blk, c); - bi->pages_in_use++; - - oh = NULL; - in = NULL; - - if (tags.extra_available) { - in = yaffs_find_or_create_by_number(dev, - tags.obj_id, - tags.extra_obj_type); - if (!in) - alloc_failed = 1; - } - - if (!in || - (!in->valid && dev->param.disable_lazy_load) || - tags.extra_shadows || - (!in->valid && - (tags.obj_id == YAFFS_OBJECTID_ROOT || - tags.obj_id == 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_rd_chunk_tags_nand(dev, - chunk, - chunkData, - NULL); - - oh = (yaffs_obj_header *) chunkData; - - if (dev->param.inband_tags) { - /* Fix up the header if they got corrupted by inband tags */ - oh->shadows_obj = oh->inband_shadowed_obj_id; - oh->is_shrink = oh->inband_is_shrink; - } - - if (!in) { - in = yaffs_find_or_create_by_number(dev, tags.obj_id, 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.obj_id, 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->variant_type == YAFFS_OBJECT_TYPE_FILE) && - ((oh && - oh->type == YAFFS_OBJECT_TYPE_FILE) || - (tags.extra_available && - tags.extra_obj_type == YAFFS_OBJECT_TYPE_FILE))) { - __u32 thisSize = - (oh) ? oh->file_size : tags. - extra_length; - __u32 parent_obj_id = - (oh) ? oh-> - parent_obj_id : tags. - extra_parent_id; - - - is_shrink = - (oh) ? oh->is_shrink : tags. - extra_is_shrink; - - /* If it is deleted (unlinked at start also means deleted) - * we treat the file size as being zeroed at this point. - */ - if (parent_obj_id == - YAFFS_OBJECTID_DELETED - || parent_obj_id == - YAFFS_OBJECTID_UNLINKED) { - thisSize = 0; - is_shrink = 1; - } - - if (is_shrink && in->variant.file_variant.shrink_size > thisSize) - in->variant.file_variant.shrink_size = thisSize; - - if (is_shrink) - bi->has_shrink_hdr = 1; - - } - /* Use existing - destroy this one. */ - yaffs_chunk_del(dev, chunk, 1, __LINE__); - - } - - if (!in->valid && in->variant_type != - (oh ? oh->type : tags.extra_obj_type)) - 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.extra_obj_type, - in->variant_type, tags.obj_id, - chunk)); - - if (!in->valid && - (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; - - if (oh) { - - 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; - - in->lazy_loaded = 0; - -#endif - } else - in->lazy_loaded = 1; - - in->hdr_chunk = chunk; - - } else if (!in->valid) { - /* we need to load this info */ - - in->valid = 1; - in->hdr_chunk = chunk; - - if (oh) { - 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 - - if (oh->shadows_obj > 0) - yaffs_handle_shadowed_obj(dev, - oh-> - shadows_obj, - 1); - - - - yaffs_set_obj_name_from_oh(in, oh); - parent = - yaffs_find_or_create_by_number - (dev, oh->parent_obj_id, - YAFFS_OBJECT_TYPE_DIRECTORY); - - file_size = oh->file_size; - is_shrink = oh->is_shrink; - equiv_id = oh->equiv_id; - - } else { - in->variant_type = tags.extra_obj_type; - parent = - yaffs_find_or_create_by_number - (dev, tags.extra_parent_id, - YAFFS_OBJECT_TYPE_DIRECTORY); - file_size = tags.extra_length; - is_shrink = tags.extra_is_shrink; - equiv_id = tags.extra_equiv_id; - in->lazy_loaded = 1; - - } - in->dirty = 0; - - if (!parent) - alloc_failed = 1; - - /* directory stuff... - * hook up to parent - */ - - if (parent && parent->variant_type == - YAFFS_OBJECT_TYPE_UNKNOWN) { - /* Set up as a directory */ - parent->variant_type = - YAFFS_OBJECT_TYPE_DIRECTORY; - YINIT_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->lost_n_found; - } - - yaffs_add_obj_to_dir(parent, in); - - itsUnlinked = (parent == dev->del_dir) || - (parent == dev->unlinked_dir); - - if (is_shrink) { - /* Mark the block as having a shrinkHeader */ - bi->has_shrink_hdr = 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->variant_type) { - case YAFFS_OBJECT_TYPE_UNKNOWN: - /* Todo got a problem */ - break; - case YAFFS_OBJECT_TYPE_FILE: - - if (in->variant.file_variant. - scanned_size < file_size) { - /* 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.file_variant.file_size = file_size; - in->variant.file_variant.scanned_size = file_size; - } - - if (in->variant.file_variant.shrink_size > file_size) - in->variant.file_variant.shrink_size = file_size; - - - break; - case YAFFS_OBJECT_TYPE_HARDLINK: - if (!itsUnlinked) { - in->variant.hardlink_variant.equiv_id = - equiv_id; - in->hard_links.next = - (struct ylist_head *) hard_list; - hard_list = 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.symlink_variant.alias = - yaffs_clone_str(oh->alias); - if (!in->variant.symlink_variant.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; + if (yaffs2_scan_chunk(dev, bi, blk, c, + &found_chunks, chunk_data, + &hard_list, summary_available) == + YAFFS_FAIL) + alloc_failed = 1; } - - bi->block_state = state; + if (bi->block_state == YAFFS_BLOCK_STATE_NEEDS_SCAN) { + /* If we got this far while scanning, then the block + * is fully allocated. */ + bi->block_state = YAFFS_BLOCK_STATE_FULL; + } /* Now let's see if it was dirty */ if (bi->pages_in_use == 0 && @@ -1511,30 +1505,28 @@ int yaffs2_scan_backwards(yaffs_dev_t *dev) bi->block_state == YAFFS_BLOCK_STATE_FULL) { yaffs_block_became_dirty(dev, blk); } - } - + yaffs_skip_rest_of_block(dev); - if (altBlockIndex) - YFREE_ALT(blockIndex); + if (alt_block_index) + vfree(block_index); else - YFREE(blockIndex); + kfree(block_index); /* Ok, we've done all the scanning. * Fix up the hard link chains. - * We should now have scanned all the objects, now it's time to add these + * We have scanned all the objects, now it's time to add these * hardlinks. */ - yaffs_link_fixup(dev, hard_list); - + yaffs_link_fixup(dev, &hard_list); - yaffs_release_temp_buffer(dev, chunkData, __LINE__); + yaffs_release_temp_buffer(dev, chunk_data); if (alloc_failed) return YAFFS_FAIL; - T(YAFFS_TRACE_SCAN, (TSTR("yaffs2_scan_backwards ends" TENDSTR))); + yaffs_trace(YAFFS_TRACE_SCAN, "yaffs2_scan_backwards ends"); return YAFFS_OK; } |