Fix POSIX ACL permission check
After commit 3567866bf261: "RCUify freeing acls, let check_acl() go ahead in
RCU mode if acl is cached" posix_acl_permission is being called with an
unsupported flag and the permission check fails. This patch fixes the issue.
Signed-off-by: Ari Savolainen <ari.m.savolainen@gmail.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/namei.c b/fs/namei.c
index 4a98bf1..fc13609 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -186,7 +186,7 @@
/* no ->get_acl() calls in RCU mode... */
if (acl == ACL_NOT_CACHED)
return -ECHILD;
- return posix_acl_permission(inode, acl, mask);
+ return posix_acl_permission(inode, acl, mask & ~MAY_NOT_BLOCK);
}
acl = get_cached_acl(inode, ACL_TYPE_ACCESS);