udf: Handle VAT packed inside inode properly
We didn't handle VAT packed inside the inode - we tried to call udf_block_map()
on such file which lead to strange results at best. Add proper handling of
packed VAT as we do it with other packed files.
Signed-off-by: Jan Kara <jack@suse.cz>
diff --git a/fs/udf/partition.c b/fs/udf/partition.c
index 307c9c3..b2e6e1e 100644
--- a/fs/udf/partition.c
+++ b/fs/udf/partition.c
@@ -54,11 +54,10 @@
struct udf_sb_info *sbi = UDF_SB(sb);
struct udf_part_map *map;
struct udf_virtual_data *vdata;
- struct udf_inode_info *iinfo;
+ struct udf_inode_info *iinfo = UDF_I(sbi->s_vat_inode);
map = &sbi->s_partmaps[partition];
vdata = &map->s_type_specific.s_virtual;
- index = (sb->s_blocksize - vdata->s_start_offset) / sizeof(uint32_t);
if (block > vdata->s_num_entries) {
udf_debug("Trying to access block beyond end of VAT "
@@ -66,6 +65,11 @@
return 0xFFFFFFFF;
}
+ if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB) {
+ loc = le32_to_cpu(((__le32 *)iinfo->i_ext.i_data)[block]);
+ goto translate;
+ }
+ index = (sb->s_blocksize - vdata->s_start_offset) / sizeof(uint32_t);
if (block >= index) {
block -= index;
newblock = 1 + (block / (sb->s_blocksize / sizeof(uint32_t)));
@@ -88,7 +92,7 @@
brelse(bh);
- iinfo = UDF_I(sbi->s_vat_inode);
+translate:
if (iinfo->i_location.partitionReferenceNum == partition) {
udf_debug("recursive call to udf_get_pblock!\n");
return 0xFFFFFFFF;