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| author | Anand Jain <Anand.Jain@oracle.com> | 2014-07-30 20:04:10 +0800 |
|---|---|---|
| committer | Chris Mason <clm@fb.com> | 2014-09-17 13:38:01 -0700 |
| commit | 79aec2b80db1089f983d60e4a22cb95d8b939844 (patch) | |
| tree | af9e646054814b3f81be56e7e4393316376f1104 /fs/btrfs/sysfs.c | |
| parent | 20ee0825ecec889afdf12f7c13b9dc3af0bb9f14 (diff) | |
| download | lwn-79aec2b80db1089f983d60e4a22cb95d8b939844.tar.gz lwn-79aec2b80db1089f983d60e4a22cb95d8b939844.zip | |
btrfs: sysfs label interface should check for read only FS
Not sure how this escaped many eyes so far
Signed-off-by: Anand Jain <anand.jain@oracle.com>
Signed-off-by: Chris Mason <clm@fb.com>
Diffstat (limited to 'fs/btrfs/sysfs.c')
| -rw-r--r-- | fs/btrfs/sysfs.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/btrfs/sysfs.c b/fs/btrfs/sysfs.c index e6a5e7d82f42..b2e7bb4393f6 100644 --- a/fs/btrfs/sysfs.c +++ b/fs/btrfs/sysfs.c @@ -377,6 +377,9 @@ static ssize_t btrfs_label_store(struct kobject *kobj, int ret; size_t p_len; + if (fs_info->sb->s_flags & MS_RDONLY) + return -EROFS; + /* * p_len is the len until the first occurrence of either * '\n' or '\0' |