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| author | Amir Goldstein <amir73il@gmail.com> | 2021-04-08 14:30:20 +0300 |
|---|---|---|
| committer | Miklos Szeredi <mszeredi@redhat.com> | 2021-04-12 12:00:36 +0200 |
| commit | e21a6c57e3905313664aa012727346a0067effd5 (patch) | |
| tree | e8abb86466e7ef1de1f34138d61d95a7a5d75e20 /fs | |
| parent | 1f0cb8bcc7f96bcd816c80618eb0a7a361c70fbd (diff) | |
| download | linux-e21a6c57e3905313664aa012727346a0067effd5.tar.gz linux-e21a6c57e3905313664aa012727346a0067effd5.tar.bz2 linux-e21a6c57e3905313664aa012727346a0067effd5.zip | |
ovl: check that upperdir path is not on a read-only mount
So far we only checked that sb is not read-only.
Suggested-by: Christian Brauner <christian.brauner@ubuntu.com>
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/overlayfs/super.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/overlayfs/super.c b/fs/overlayfs/super.c index fdd72f1a9c5e..8d8366350093 100644 --- a/fs/overlayfs/super.c +++ b/fs/overlayfs/super.c @@ -1185,8 +1185,8 @@ static int ovl_get_upper(struct super_block *sb, struct ovl_fs *ofs, if (err) goto out; - /* Upper fs should not be r/o */ - if (sb_rdonly(upperpath->mnt->mnt_sb)) { + /* Upperdir path should not be r/o */ + if (__mnt_is_readonly(upperpath->mnt)) { pr_err("upper fs is r/o, try multi-lower layers mount\n"); err = -EINVAL; goto out; |