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-rw-r--r--fs/udf/super.c118
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);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-29 12:49:21 +0000