mnt: Correct permission checks in do_remount

[firefly-linux-kernel-4.4.55.git] / include / linux / mount.h

diff --git a/include/linux/mount.h b/include/linux/mount.h
index 839bac2709048da4d3f2d5099da1db618adcc729..b0c1e6574e7fc7f5ff204fb39a12cfe1cb751268 100644 (file)
--- a/include/linux/mount.h
+++ b/include/linux/mount.h
@@ -42,13 +42,20 @@ struct mnt_namespace;
  * flag, consider how it interacts with shared mounts.
  */
 #define MNT_SHARED_MASK        (MNT_UNBINDABLE)
-#define MNT_PROPAGATION_MASK   (MNT_SHARED | MNT_UNBINDABLE)
+#define MNT_USER_SETTABLE_MASK  (MNT_NOSUID | MNT_NODEV | MNT_NOEXEC \
+                                | MNT_NOATIME | MNT_NODIRATIME | MNT_RELATIME \
+                                | MNT_READONLY)
+#define MNT_ATIME_MASK (MNT_NOATIME | MNT_NODIRATIME | MNT_RELATIME )
 
 #define MNT_INTERNAL_FLAGS (MNT_SHARED | MNT_WRITE_HOLD | MNT_INTERNAL | \
                            MNT_DOOMED | MNT_SYNC_UMOUNT | MNT_MARKED)
 
 #define MNT_INTERNAL   0x4000
 
+#define MNT_LOCK_ATIME         0x040000
+#define MNT_LOCK_NOEXEC                0x080000
+#define MNT_LOCK_NOSUID                0x100000
+#define MNT_LOCK_NODEV         0x200000
 #define MNT_LOCK_READONLY      0x400000
 #define MNT_LOCKED             0x800000
 #define MNT_DOOMED             0x1000000