diff options
| author | Jan Kara <jack@suse.com> | 2015-08-20 14:50:07 +0200 |
|---|---|---|
| committer | Jan Kara <jack@suse.com> | 2015-08-20 14:58:35 +0200 |
| commit | 9181f8bf5abf4b9d59b12e878895375b84fe32ba (patch) | |
| tree | 7bd54141c6086a7507d2a393c465678870cd1eed | |
| parent | 72d4d0e48995c91ddf5d1f86612c979eca95bd06 (diff) | |
udf: Don't modify filesystem for read-only mounts
When read-write mount of a filesystem is requested but we find out we
can mount the filesystem only in read-only mode, we still modify
LVID in udf_close_lvid(). That is both unnecessary and contrary to
expectation that when we fall back to read-only mount we don't modify
the filesystem.
Make sure we call udf_close_lvid() only if we called udf_open_lvid() so
that filesystem gets modified only if we verified we are allowed to
write to it.
Reported-by: Karel Zak <kzak@redhat.com>
Signed-off-by: Jan Kara <jack@suse.com>
| -rw-r--r-- | fs/udf/super.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/fs/udf/super.c b/fs/udf/super.c index b96f190bc567..81155b9b445b 100644 --- a/fs/udf/super.c +++ b/fs/udf/super.c @@ -2070,6 +2070,7 @@ static int udf_fill_super(struct super_block *sb, void *options, int silent) struct udf_options uopt; struct kernel_lb_addr rootdir, fileset; struct udf_sb_info *sbi; + bool lvid_open = false; uopt.flags = (1 << UDF_FLAG_USE_AD_IN_ICB) | (1 << UDF_FLAG_STRICT); uopt.uid = INVALID_UID; @@ -2216,8 +2217,10 @@ static int udf_fill_super(struct super_block *sb, void *options, int silent) le16_to_cpu(ts.year), ts.month, ts.day, ts.hour, ts.minute, le16_to_cpu(ts.typeAndTimezone)); } - if (!(sb->s_flags & MS_RDONLY)) + if (!(sb->s_flags & MS_RDONLY)) { udf_open_lvid(sb); + lvid_open = true; + } /* Assign the root inode */ /* assign inodes by physical block number */ @@ -2248,7 +2251,7 @@ parse_options_failure: if (UDF_QUERY_FLAG(sb, UDF_FLAG_NLS_MAP)) unload_nls(sbi->s_nls_map); #endif - if (!(sb->s_flags & MS_RDONLY)) + if (lvid_open) udf_close_lvid(sb); brelse(sbi->s_lvid_bh); udf_sb_free_partitions(sb); |