btrfs: prohibit a operation of changing acl's mask when noacl mount option used
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Message ID 4BF1E4AA.9090709@cn.fujitsu.com
State New, archived
Headers show

Commit Message

Shi Weihua May 18, 2010, 12:51 a.m. UTC
None

Patch
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diff --git a/fs/btrfs/acl.c b/fs/btrfs/acl.c
index da3133c..f2e09c2 100644
--- a/fs/btrfs/acl.c
+++ b/fs/btrfs/acl.c
@@ -159,6 +159,9 @@  static int btrfs_xattr_set_acl(struct inode *inode, int type,
 	int ret;
 	struct posix_acl *acl = NULL;
 
+	if (!IS_POSIXACL(inode))
+		return -EOPNOTSUPP;
+
 	if (value) {
 		acl = posix_acl_from_xattr(value, size);
 		if (acl == NULL) {