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Date:	Sat, 05 Jul 2014 19:51:19 +0000 (GMT)
From:	Steven Stewart-Gallus <>
Cc:	Jeff Layton <>,
	"J. Bruce Fields" <>,,,, Andy Lutomirski <>
Subject: [PATCH 1/1] include/uapi: Define AT_FDNODIR constant as future

From: Steven Stewart-Gallus <

This constant means that in the far future it might be possible to
define other AT_FD* constants.

Signed-off-by: Steven Stewart-Gallus <>

This is my first kernel patch but this is really trivial so I hope I'm doing
this right.

diff --git a/include/uapi/linux/fcntl.h b/include/uapi/linux/fcntl.h
index 074b886..92223f0 100644
--- a/include/uapi/linux/fcntl.h
+++ b/include/uapi/linux/fcntl.h
@@ -38,9 +38,15 @@
 #define DN_ATTRIB	0x00000020	/* File changed attibutes */
 #define DN_MULTISHOT	0x80000000	/* Don't remove notifier */
+#define AT_FDNODDIR		-1      /* Special value used to indicate
+					   openat should not use any directory.
+					   Currently, other values work for this
+					   but in the future that might
+					   change. */
 #define AT_FDCWD		-100    /* Special value used to indicate
-                                           openat should use the current
-                                           working directory. */
+					   openat should use the current
+					   working directory. */
 #define AT_SYMLINK_NOFOLLOW	0x100   /* Do not follow symbolic links.  */
 #define AT_REMOVEDIR		0x200   /* Remove directory instead of
                                            unlinking file.  */

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