aboutsummaryrefslogtreecommitdiff
path: root/include/uapi/linux/fcntl.h
diff options
context:
space:
mode:
Diffstat (limited to 'include/uapi/linux/fcntl.h')
-rw-r--r--include/uapi/linux/fcntl.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/uapi/linux/fcntl.h b/include/uapi/linux/fcntl.h
index 38a6d66d9e88..87e2dec79fea 100644
--- a/include/uapi/linux/fcntl.h
+++ b/include/uapi/linux/fcntl.h
@@ -152,6 +152,7 @@
#define AT_HANDLE_FID 0x200 /* File handle is needed to compare
object identity and may not be
usable with open_by_handle_at(2). */
+#define AT_HANDLE_MNT_ID_UNIQUE 0x001 /* Return the u64 unique mount ID. */
#if defined(__KERNEL__)
#define AT_GETATTR_NOSEC 0x80000000