diff mbox series

[5.8,49/70] erofs: avoid duplicated permission check for "trusted." xattrs

Message ID 20201031113501.848403905@linuxfoundation.org
State New
Headers show
Series None | expand

Commit Message

Greg Kroah-Hartman Oct. 31, 2020, 11:36 a.m. UTC 
From: Gao Xiang <hsiangkao@redhat.com>

commit d578b46db69d125a654f509bdc9091d84e924dc8 upstream.

Don't recheck it since xattr_permission() already
checks CAP_SYS_ADMIN capability.

Just follow 5d3ce4f70172 ("f2fs: avoid duplicated permission check for "trusted." xattrs")

Reported-by: Hongyu Jin <hongyu.jin@unisoc.com>
[ Gao Xiang: since it could cause some complex Android overlay
  permission issue as well on android-5.4+, it'd be better to
  backport to 5.4+ rather than pure cleanup on mainline. ]
Cc: <stable@vger.kernel.org> # 5.4+
Link: https://lore.kernel.org/r/20200811070020.6339-1-hsiangkao@redhat.com
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Gao Xiang <hsiangkao@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 fs/erofs/xattr.c |    2 --
 1 file changed, 2 deletions(-)
diff mbox series

Patch

--- a/fs/erofs/xattr.c
+++ b/fs/erofs/xattr.c
@@ -473,8 +473,6 @@  static int erofs_xattr_generic_get(const
 			return -EOPNOTSUPP;
 		break;
 	case EROFS_XATTR_INDEX_TRUSTED:
-		if (!capable(CAP_SYS_ADMIN))
-			return -EPERM;
 		break;
 	case EROFS_XATTR_INDEX_SECURITY:
 		break;