X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=fs%2Fsysfs%2Fmount.c;h=8d924b5ec733450e37599c8338ab69ea3b15027f;hb=87a8ebd637dafc255070f503909a053cf0d98d3f;hp=db940a9be0458216b6b54df956d89a20b32f16ee;hpb=cf5425bfcd6909f9831a00bc06ccb9a5b163766a;p=platform%2Fadaptation%2Frenesas_rcar%2Frenesas_kernel.git

diff --git a/fs/sysfs/mount.c b/fs/sysfs/mount.c
index db940a9..afd8327 100644
--- a/fs/sysfs/mount.c
+++ b/fs/sysfs/mount.c
@@ -10,7 +10,7 @@
  * Please see Documentation/filesystems/sysfs.txt for more information.
  */
 
-#define DEBUG 
+#define DEBUG
 
 #include <linux/fs.h>
 #include <linux/mount.h>
@@ -19,6 +19,7 @@
 #include <linux/module.h>
 #include <linux/magic.h>
 #include <linux/slab.h>
+#include <linux/user_namespace.h>
 
 #include "sysfs.h"
 
@@ -111,6 +112,9 @@ static struct dentry *sysfs_mount(struct file_system_type *fs_type,
 	struct super_block *sb;
 	int error;
 
+	if (!(flags & MS_KERNMOUNT) && !current_user_ns()->may_mount_sysfs)
+		return ERR_PTR(-EPERM);
+
 	info = kzalloc(sizeof(*info), GFP_KERNEL);
 	if (!info)
 		return ERR_PTR(-ENOMEM);