diff options
Diffstat (limited to 'fs/overlayfs/namei.c')
| -rw-r--r-- | fs/overlayfs/namei.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/fs/overlayfs/namei.c b/fs/overlayfs/namei.c index 11e164cb2593..69ca8eb07519 100644 --- a/fs/overlayfs/namei.c +++ b/fs/overlayfs/namei.c @@ -737,6 +737,18 @@ struct dentry *ovl_lookup(struct inode *dir, struct dentry *dentry, } } + /* + * When "verify_lower" feature is enabled, do not merge with a + * lower dir that does not match a stored origin xattr. + */ + if (upperdentry && !ctr && ovl_verify_lower(dentry->d_sb)) { + err = ovl_verify_origin(upperdentry, this, false); + if (err) { + dput(this); + break; + } + } + stack[ctr].dentry = this; stack[ctr].layer = lower.layer; ctr++; |