diff options
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/udf/super.c | 86 |
1 files changed, 42 insertions, 44 deletions
diff --git a/fs/udf/super.c b/fs/udf/super.c index 500d1e4cc1c7..d50e3f5c46e8 100644 --- a/fs/udf/super.c +++ b/fs/udf/super.c @@ -1103,16 +1103,18 @@ static int udf_load_partdesc(struct super_block *sb, sector_t block) if (phd->unallocSpaceBitmap.extLength) { struct udf_bitmap *bitmap = udf_sb_alloc_bitmap(sb, i); + if (!bitmap) { + ret = 1; + goto out_bh; + } map->s_uspace.s_bitmap = bitmap; - if (bitmap != NULL) { - bitmap->s_extLength = le32_to_cpu( + bitmap->s_extLength = le32_to_cpu( phd->unallocSpaceBitmap.extLength); - bitmap->s_extPosition = le32_to_cpu( + 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, bitmap->s_extPosition); - } + map->s_partition_flags |= UDF_PART_FLAG_UNALLOC_BITMAP; + udf_debug("unallocSpaceBitmap (part %d) @ %d\n", i, + bitmap->s_extPosition); } if (phd->partitionIntegrityTable.extLength) @@ -1139,19 +1141,22 @@ static int udf_load_partdesc(struct super_block *sb, sector_t block) if (phd->freedSpaceBitmap.extLength) { struct udf_bitmap *bitmap = udf_sb_alloc_bitmap(sb, i); + if (!bitmap) { + ret = 1; + goto out_bh; + } map->s_fspace.s_bitmap = bitmap; - if (bitmap != NULL) { - bitmap->s_extLength = le32_to_cpu( + bitmap->s_extLength = le32_to_cpu( phd->freedSpaceBitmap.extLength); - bitmap->s_extPosition = le32_to_cpu( + 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, bitmap->s_extPosition); - } + map->s_partition_flags |= UDF_PART_FLAG_FREED_BITMAP; + udf_debug("freedSpaceBitmap (part %d) @ %d\n", i, + bitmap->s_extPosition); } out_bh: + /* In case loading failed, we handle cleanup in udf_fill_super */ brelse(bh); return ret; } @@ -1677,6 +1682,23 @@ static void udf_sb_free_bitmap(struct udf_bitmap *bitmap) vfree(bitmap); } +static void udf_free_partition(struct udf_part_map *map) +{ + int i; + + if (map->s_partition_flags & UDF_PART_FLAG_UNALLOC_TABLE) + iput(map->s_uspace.s_table); + if (map->s_partition_flags & UDF_PART_FLAG_FREED_TABLE) + iput(map->s_fspace.s_table); + if (map->s_partition_flags & UDF_PART_FLAG_UNALLOC_BITMAP) + udf_sb_free_bitmap(map->s_uspace.s_bitmap); + if (map->s_partition_flags & UDF_PART_FLAG_FREED_BITMAP) + udf_sb_free_bitmap(map->s_fspace.s_bitmap); + if (map->s_partition_type == UDF_SPARABLE_MAP15) + for (i = 0; i < 4; i++) + brelse(map->s_type_specific.s_sparing.s_spar_map[i]); +} + static int udf_fill_super(struct super_block *sb, void *options, int silent) { int i; @@ -1846,21 +1868,9 @@ static int udf_fill_super(struct super_block *sb, void *options, int silent) error_out: if (sbi->s_vat_inode) iput(sbi->s_vat_inode); - if (sbi->s_partitions) { - struct udf_part_map *map = &sbi->s_partmaps[sbi->s_partition]; - if (map->s_partition_flags & UDF_PART_FLAG_UNALLOC_TABLE) - iput(map->s_uspace.s_table); - if (map->s_partition_flags & UDF_PART_FLAG_FREED_TABLE) - iput(map->s_fspace.s_table); - if (map->s_partition_flags & UDF_PART_FLAG_UNALLOC_BITMAP) - udf_sb_free_bitmap(map->s_uspace.s_bitmap); - if (map->s_partition_flags & UDF_PART_FLAG_FREED_BITMAP) - udf_sb_free_bitmap(map->s_fspace.s_bitmap); - if (map->s_partition_type == UDF_SPARABLE_MAP15) - for (i = 0; i < 4; i++) - brelse(map->s_type_specific.s_sparing. - s_spar_map[i]); - } + if (sbi->s_partitions) + for (i = 0; i < sbi->s_partitions; i++) + udf_free_partition(&sbi->s_partmaps[i]); #ifdef CONFIG_UDF_NLS if (UDF_QUERY_FLAG(sb, UDF_FLAG_NLS_MAP)) unload_nls(sbi->s_nls_map); @@ -1912,21 +1922,9 @@ static void udf_put_super(struct super_block *sb) sbi = UDF_SB(sb); if (sbi->s_vat_inode) iput(sbi->s_vat_inode); - if (sbi->s_partitions) { - struct udf_part_map *map = &sbi->s_partmaps[sbi->s_partition]; - if (map->s_partition_flags & UDF_PART_FLAG_UNALLOC_TABLE) - iput(map->s_uspace.s_table); - if (map->s_partition_flags & UDF_PART_FLAG_FREED_TABLE) - iput(map->s_fspace.s_table); - if (map->s_partition_flags & UDF_PART_FLAG_UNALLOC_BITMAP) - udf_sb_free_bitmap(map->s_uspace.s_bitmap); - if (map->s_partition_flags & UDF_PART_FLAG_FREED_BITMAP) - udf_sb_free_bitmap(map->s_fspace.s_bitmap); - if (map->s_partition_type == UDF_SPARABLE_MAP15) - for (i = 0; i < 4; i++) - brelse(map->s_type_specific.s_sparing. - s_spar_map[i]); - } + if (sbi->s_partitions) + for (i = 0; i < sbi->s_partitions; i++) + udf_free_partition(&sbi->s_partmaps[i]); #ifdef CONFIG_UDF_NLS if (UDF_QUERY_FLAG(sb, UDF_FLAG_NLS_MAP)) unload_nls(sbi->s_nls_map); |