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authorLinus Torvalds <torvalds@linux-foundation.org>2016-06-19 07:05:14 -1000
committerLinus Torvalds <torvalds@linux-foundation.org>2016-06-19 07:05:14 -1000
commitc3695331f3a326a468bd6a5b6f05b481b399726b (patch)
tree7ba112e687646068c0081015a1abf843122c4572
parent9af1f5d8f20f97884da55817ab80a6fcd170f296 (diff)
parentb9d8905e4a751e2cdc0fb474856b7183c594dcc6 (diff)
Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs
Pull UDF fixes and a reiserfs fix from Jan Kara: "A couple of udf fixes (most notably a bug in parsing UDF partitions which led to inability to mount recent Windows installation media) and a reiserfs fix for handling kstrdup failure" * 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs: reiserfs: check kstrdup failure udf: Use correct partition reference number for metadata udf: Use IS_ERR when loading metadata mirror file entry udf: Don't BUG on missing metadata partition descriptor
-rw-r--r--fs/reiserfs/super.c9
-rw-r--r--fs/udf/partition.c13
-rw-r--r--fs/udf/super.c22
-rw-r--r--fs/udf/udf_sb.h5
4 files changed, 33 insertions, 16 deletions
diff --git a/fs/reiserfs/super.c b/fs/reiserfs/super.c
index b8f2d1e8c645..c72c16c5a60f 100644
--- a/fs/reiserfs/super.c
+++ b/fs/reiserfs/super.c
@@ -1393,7 +1393,7 @@ static int reiserfs_remount(struct super_block *s, int *mount_flags, char *arg)
unsigned long safe_mask = 0;
unsigned int commit_max_age = (unsigned int)-1;
struct reiserfs_journal *journal = SB_JOURNAL(s);
- char *new_opts = kstrdup(arg, GFP_KERNEL);
+ char *new_opts;
int err;
char *qf_names[REISERFS_MAXQUOTAS];
unsigned int qfmt = 0;
@@ -1401,6 +1401,10 @@ static int reiserfs_remount(struct super_block *s, int *mount_flags, char *arg)
int i;
#endif
+ new_opts = kstrdup(arg, GFP_KERNEL);
+ if (arg && !new_opts)
+ return -ENOMEM;
+
sync_filesystem(s);
reiserfs_write_lock(s);
@@ -1546,7 +1550,8 @@ static int reiserfs_remount(struct super_block *s, int *mount_flags, char *arg)
}
out_ok_unlocked:
- replace_mount_options(s, new_opts);
+ if (new_opts)
+ replace_mount_options(s, new_opts);
return 0;
out_err_unlock:
diff --git a/fs/udf/partition.c b/fs/udf/partition.c
index 5f861ed287c3..888c364b2fe9 100644
--- a/fs/udf/partition.c
+++ b/fs/udf/partition.c
@@ -295,7 +295,8 @@ static uint32_t udf_try_read_meta(struct inode *inode, uint32_t block,
map = &UDF_SB(sb)->s_partmaps[partition];
/* map to sparable/physical partition desc */
phyblock = udf_get_pblock(sb, eloc.logicalBlockNum,
- map->s_partition_num, ext_offset + offset);
+ map->s_type_specific.s_metadata.s_phys_partition_ref,
+ ext_offset + offset);
}
brelse(epos.bh);
@@ -317,14 +318,18 @@ uint32_t udf_get_pblock_meta25(struct super_block *sb, uint32_t block,
mdata = &map->s_type_specific.s_metadata;
inode = mdata->s_metadata_fe ? : mdata->s_mirror_fe;
- /* We shouldn't mount such media... */
- BUG_ON(!inode);
+ if (!inode)
+ return 0xFFFFFFFF;
+
retblk = udf_try_read_meta(inode, block, partition, offset);
if (retblk == 0xFFFFFFFF && mdata->s_metadata_fe) {
udf_warn(sb, "error reading from METADATA, trying to read from MIRROR\n");
if (!(mdata->s_flags & MF_MIRROR_FE_LOADED)) {
mdata->s_mirror_fe = udf_find_metadata_inode_efe(sb,
- mdata->s_mirror_file_loc, map->s_partition_num);
+ mdata->s_mirror_file_loc,
+ mdata->s_phys_partition_ref);
+ if (IS_ERR(mdata->s_mirror_fe))
+ mdata->s_mirror_fe = NULL;
mdata->s_flags |= MF_MIRROR_FE_LOADED;
}
diff --git a/fs/udf/super.c b/fs/udf/super.c
index 5e2c8c814e1b..4942549e7dc8 100644
--- a/fs/udf/super.c
+++ b/fs/udf/super.c
@@ -951,13 +951,13 @@ out2:
}
struct inode *udf_find_metadata_inode_efe(struct super_block *sb,
- u32 meta_file_loc, u32 partition_num)
+ u32 meta_file_loc, u32 partition_ref)
{
struct kernel_lb_addr addr;
struct inode *metadata_fe;
addr.logicalBlockNum = meta_file_loc;
- addr.partitionReferenceNum = partition_num;
+ addr.partitionReferenceNum = partition_ref;
metadata_fe = udf_iget_special(sb, &addr);
@@ -974,7 +974,8 @@ struct inode *udf_find_metadata_inode_efe(struct super_block *sb,
return metadata_fe;
}
-static int udf_load_metadata_files(struct super_block *sb, int partition)
+static int udf_load_metadata_files(struct super_block *sb, int partition,
+ int type1_index)
{
struct udf_sb_info *sbi = UDF_SB(sb);
struct udf_part_map *map;
@@ -984,20 +985,21 @@ static int udf_load_metadata_files(struct super_block *sb, int partition)
map = &sbi->s_partmaps[partition];
mdata = &map->s_type_specific.s_metadata;
+ mdata->s_phys_partition_ref = type1_index;
/* metadata address */
udf_debug("Metadata file location: block = %d part = %d\n",
- mdata->s_meta_file_loc, map->s_partition_num);
+ mdata->s_meta_file_loc, mdata->s_phys_partition_ref);
fe = udf_find_metadata_inode_efe(sb, mdata->s_meta_file_loc,
- map->s_partition_num);
+ mdata->s_phys_partition_ref);
if (IS_ERR(fe)) {
/* mirror file entry */
udf_debug("Mirror metadata file location: block = %d part = %d\n",
- mdata->s_mirror_file_loc, map->s_partition_num);
+ mdata->s_mirror_file_loc, mdata->s_phys_partition_ref);
fe = udf_find_metadata_inode_efe(sb, mdata->s_mirror_file_loc,
- map->s_partition_num);
+ mdata->s_phys_partition_ref);
if (IS_ERR(fe)) {
udf_err(sb, "Both metadata and mirror metadata inode efe can not found\n");
@@ -1015,7 +1017,7 @@ static int udf_load_metadata_files(struct super_block *sb, int partition)
*/
if (mdata->s_bitmap_file_loc != 0xFFFFFFFF) {
addr.logicalBlockNum = mdata->s_bitmap_file_loc;
- addr.partitionReferenceNum = map->s_partition_num;
+ addr.partitionReferenceNum = mdata->s_phys_partition_ref;
udf_debug("Bitmap file location: block = %d part = %d\n",
addr.logicalBlockNum, addr.partitionReferenceNum);
@@ -1283,7 +1285,7 @@ static int udf_load_partdesc(struct super_block *sb, sector_t block)
p = (struct partitionDesc *)bh->b_data;
partitionNumber = le16_to_cpu(p->partitionNumber);
- /* First scan for TYPE1, SPARABLE and METADATA partitions */
+ /* First scan for TYPE1 and SPARABLE partitions */
for (i = 0; i < sbi->s_partitions; i++) {
map = &sbi->s_partmaps[i];
udf_debug("Searching map: (%d == %d)\n",
@@ -1333,7 +1335,7 @@ static int udf_load_partdesc(struct super_block *sb, sector_t block)
goto out_bh;
if (map->s_partition_type == UDF_METADATA_MAP25) {
- ret = udf_load_metadata_files(sb, i);
+ ret = udf_load_metadata_files(sb, i, type1_idx);
if (ret < 0) {
udf_err(sb, "error loading MetaData partition map %d\n",
i);
diff --git a/fs/udf/udf_sb.h b/fs/udf/udf_sb.h
index 27b5335730c9..c13875d669c0 100644
--- a/fs/udf/udf_sb.h
+++ b/fs/udf/udf_sb.h
@@ -61,6 +61,11 @@ struct udf_meta_data {
__u32 s_bitmap_file_loc;
__u32 s_alloc_unit_size;
__u16 s_align_unit_size;
+ /*
+ * Partition Reference Number of the associated physical / sparable
+ * partition
+ */
+ __u16 s_phys_partition_ref;
int s_flags;
struct inode *s_metadata_fe;
struct inode *s_mirror_fe;