From 3dabc672182decad3e93e389ee5c3e6044ed0e98 Mon Sep 17 00:00:00 2001
From: Dave Jones <davej@redhat.com>
Date: Mon, 7 Apr 2014 11:14:38 -0400
Subject: [PATCH] add new renameat2 syscall

---
 include/syscalls-x86_64.h |  3 ++-
 syscalls/rename.c         | 29 +++++++++++++++++++++++++++++
 syscalls/syscalls.h       |  1 +
 3 files changed, 32 insertions(+), 1 deletion(-)

diff --git a/include/syscalls-x86_64.h b/include/syscalls-x86_64.h
index 0a3d6bf..e09df43 100644
--- a/include/syscalls-x86_64.h
+++ b/include/syscalls-x86_64.h
@@ -1,6 +1,6 @@
 #pragma once
 
-/* Syscalls from arch/x86/syscalls/syscall_64.tbl as of 3.8rc1 */
+/* Syscalls from arch/x86/syscalls/syscall_64.tbl as of 3.15rc1 */
 
 #include "sanitise.h"
 #include "syscall.h"
@@ -323,4 +323,5 @@ struct syscalltable syscalls_x86_64[] = {
 	{ .entry = &syscall_finit_module },
 	{ .entry = &syscall_sched_setattr },
 	{ .entry = &syscall_sched_getattr },
+	{ .entry = &syscall_renameat2 },
 };
diff --git a/syscalls/rename.c b/syscalls/rename.c
index 4307e6d..d2fa7bc 100644
--- a/syscalls/rename.c
+++ b/syscalls/rename.c
@@ -32,3 +32,32 @@ struct syscallentry syscall_renameat = {
 	.flags = NEED_ALARM,
 	.group = GROUP_VFS,
 };
+
+/*
+ * SYSCALL_DEFINE5(renameat2, int, olddfd, const char __user *, oldname,
+		   int, newdfd, const char __user *, newname, unsigned int, flags)
+ */
+
+#define RENAME_NOREPLACE        (1 << 0)        /* Don't overwrite target */
+#define RENAME_EXCHANGE         (1 << 1)        /* Exchange source and dest */
+
+struct syscallentry syscall_renameat2 = {
+	.name = "renameat2",
+	.num_args = 5,
+	.arg1name = "olddfd",
+	.arg1type = ARG_FD,
+	.arg2name = "oldname",
+	.arg2type = ARG_ADDRESS,
+	.arg3name = "newdfd",
+	.arg3type = ARG_FD,
+	.arg4name = "newname",
+	.arg4type = ARG_ADDRESS,
+	.arg5name = "flags",
+	.arg5type = ARG_LIST,
+	.arg5list = {
+		.num = 2,
+		.values = { RENAME_NOREPLACE, RENAME_EXCHANGE },
+	},
+	.flags = NEED_ALARM,
+	.group = GROUP_VFS,
+};
diff --git a/syscalls/syscalls.h b/syscalls/syscalls.h
index 09b6a69..da86590 100644
--- a/syscalls/syscalls.h
+++ b/syscalls/syscalls.h
@@ -368,3 +368,4 @@ extern struct syscallentry syscall_arm_fadvise64_64;
 extern struct syscallentry syscall_sh_cacheflush;
 extern struct syscallentry syscall_sched_setattr;
 extern struct syscallentry syscall_sched_getattr;
+extern struct syscallentry syscall_renameat2;
-- 
2.11.4.GIT