diff options
| -rw-r--r-- | fs/udf/super.c | 118 |
1 files changed, 62 insertions, 56 deletions
diff --git a/fs/udf/super.c b/fs/udf/super.c index d50e3f5c46e..c5fef85a9c1 100644 --- a/fs/udf/super.c +++ b/fs/udf/super.c @@ -1024,41 +1024,14 @@ static struct udf_bitmap *udf_sb_alloc_bitmap(struct super_block *sb, u32 index) return bitmap; } -static int udf_load_partdesc(struct super_block *sb, sector_t block) +static int udf_fill_partdesc_info(struct super_block *sb, + struct partitionDesc *p, int p_index) { - struct buffer_head *bh; - struct partitionHeaderDesc *phd; - struct partitionDesc *p; struct udf_part_map *map; struct udf_sb_info *sbi = UDF_SB(sb); - bool found = false; - int i; - uint16_t partitionNumber; - uint16_t ident; - int ret = 0; - - bh = udf_read_tagged(sb, block, block, &ident); - if (!bh) - return 1; - if (ident != TAG_IDENT_PD) - goto out_bh; - - p = (struct partitionDesc *)bh->b_data; - partitionNumber = le16_to_cpu(p->partitionNumber); - for (i = 0; i < sbi->s_partitions; i++) { - map = &sbi->s_partmaps[i]; - udf_debug("Searching map: (%d == %d)\n", - map->s_partition_num, partitionNumber); - found = map->s_partition_num == partitionNumber; - if (found) - break; - } + struct partitionHeaderDesc *phd; - if (!found) { - udf_debug("Partition (%d) not found in partition map\n", - partitionNumber); - goto out_bh; - } + map = &sbi->s_partmaps[p_index]; map->s_partition_len = le32_to_cpu(p->partitionLength); /* blocks */ map->s_partition_root = le32_to_cpu(p->partitionStartingLocation); @@ -1073,88 +1046,121 @@ static int udf_load_partdesc(struct super_block *sb, sector_t block) map->s_partition_flags |= UDF_PART_FLAG_OVERWRITABLE; udf_debug("Partition (%d:%d type %x) starts at physical %d, " - "block length %d\n", partitionNumber, i, + "block length %d\n", partitionNumber, p_index, map->s_partition_type, map->s_partition_root, map->s_partition_len); if (strcmp(p->partitionContents.ident, PD_PARTITION_CONTENTS_NSR02) && strcmp(p->partitionContents.ident, PD_PARTITION_CONTENTS_NSR03)) - goto out_bh; + return 0; phd = (struct partitionHeaderDesc *)p->partitionContentsUse; if (phd->unallocSpaceTable.extLength) { kernel_lb_addr loc = { .logicalBlockNum = le32_to_cpu( phd->unallocSpaceTable.extPosition), - .partitionReferenceNum = i, + .partitionReferenceNum = p_index, }; map->s_uspace.s_table = udf_iget(sb, loc); if (!map->s_uspace.s_table) { udf_debug("cannot load unallocSpaceTable (part %d)\n", - i); - ret = 1; - goto out_bh; + p_index); + return 1; } map->s_partition_flags |= UDF_PART_FLAG_UNALLOC_TABLE; udf_debug("unallocSpaceTable (part %d) @ %ld\n", - i, map->s_uspace.s_table->i_ino); + p_index, map->s_uspace.s_table->i_ino); } if (phd->unallocSpaceBitmap.extLength) { - struct udf_bitmap *bitmap = udf_sb_alloc_bitmap(sb, i); - if (!bitmap) { - ret = 1; - goto out_bh; - } + struct udf_bitmap *bitmap = udf_sb_alloc_bitmap(sb, p_index); + if (!bitmap) + return 1; map->s_uspace.s_bitmap = bitmap; bitmap->s_extLength = le32_to_cpu( phd->unallocSpaceBitmap.extLength); bitmap->s_extPosition = le32_to_cpu( phd->unallocSpaceBitmap.extPosition); map->s_partition_flags |= UDF_PART_FLAG_UNALLOC_BITMAP; - udf_debug("unallocSpaceBitmap (part %d) @ %d\n", i, + udf_debug("unallocSpaceBitmap (part %d) @ %d\n", p_index, bitmap->s_extPosition); } if (phd->partitionIntegrityTable.extLength) - udf_debug("partitionIntegrityTable (part %d)\n", i); + udf_debug("partitionIntegrityTable (part %d)\n", p_index); if (phd->freedSpaceTable.extLength) { kernel_lb_addr loc = { .logicalBlockNum = le32_to_cpu( phd->freedSpaceTable.extPosition), - .partitionReferenceNum = i, + .partitionReferenceNum = p_index, }; map->s_fspace.s_table = udf_iget(sb, loc); if (!map->s_fspace.s_table) { - udf_debug("cannot load freedSpaceTable (part %d)\n", i); - ret = 1; - goto out_bh; + udf_debug("cannot load freedSpaceTable (part %d)\n", + p_index); + return 1; } map->s_partition_flags |= UDF_PART_FLAG_FREED_TABLE; udf_debug("freedSpaceTable (part %d) @ %ld\n", - i, map->s_fspace.s_table->i_ino); + p_index, map->s_fspace.s_table->i_ino); } if (phd->freedSpaceBitmap.extLength) { - struct udf_bitmap *bitmap = udf_sb_alloc_bitmap(sb, i); - if (!bitmap) { - ret = 1; - goto out_bh; - } + struct udf_bitmap *bitmap = udf_sb_alloc_bitmap(sb, p_index); + if (!bitmap) + return 1; map->s_fspace.s_bitmap = bitmap; bitmap->s_extLength = le32_to_cpu( phd->freedSpaceBitmap.extLength); bitmap->s_extPosition = le32_to_cpu( phd->freedSpaceBitmap.extPosition); map->s_partition_flags |= UDF_PART_FLAG_FREED_BITMAP; - udf_debug("freedSpaceBitmap (part %d) @ %d\n", i, + udf_debug("freedSpaceBitmap (part %d) @ %d\n", p_index, bitmap->s_extPosition); } + return 0; +} + +static int udf_load_partdesc(struct super_block *sb, sector_t block) +{ + struct buffer_head *bh; + struct partitionDesc *p; + struct udf_part_map *map; + struct udf_sb_info *sbi = UDF_SB(sb); + bool found = false; + int i; + uint16_t partitionNumber; + uint16_t ident; + int ret = 0; + + bh = udf_read_tagged(sb, block, block, &ident); + if (!bh) + return 1; + if (ident != TAG_IDENT_PD) + goto out_bh; + + p = (struct partitionDesc *)bh->b_data; + partitionNumber = le16_to_cpu(p->partitionNumber); + for (i = 0; i < sbi->s_partitions; i++) { + map = &sbi->s_partmaps[i]; + udf_debug("Searching map: (%d == %d)\n", + map->s_partition_num, partitionNumber); + found = map->s_partition_num == partitionNumber; + if (found) + break; + } + + if (!found) { + udf_debug("Partition (%d) not found in partition map\n", + partitionNumber); + goto out_bh; + } + ret = udf_fill_partdesc_info(sb, p, i); out_bh: /* In case loading failed, we handle cleanup in udf_fill_super */ brelse(bh); |