From db575359d4b8164ad6c2ac5f36c7a50c065a2864 Mon Sep 17 00:00:00 2001
From: Khem Raj <raj.khem@gmail.com>
Date: Thu, 20 Feb 2014 00:44:34 -0800
Subject: [PATCH 2/3] wire setns syscall

Signed-off-by: Khem Raj <raj.khem@gmail.com>
Upstream-Status: Pending
---
 libc/sysdeps/linux/common/Makefile.in  |  1 +
 libc/sysdeps/linux/common/bits/sched.h |  4 ++++
 libc/sysdeps/linux/common/setns.c      | 18 ++++++++++++++++++
 3 files changed, 23 insertions(+)
 create mode 100644 libc/sysdeps/linux/common/setns.c

diff --git a/libc/sysdeps/linux/common/Makefile.in b/libc/sysdeps/linux/common/Makefile.in
index 45d2e21..10d9884 100644
--- a/libc/sysdeps/linux/common/Makefile.in
+++ b/libc/sysdeps/linux/common/Makefile.in
@@ -45,6 +45,7 @@ CSRC-$(UCLIBC_LINUX_SPECIFIC) += \
 	sendfile.c \
 	setfsgid.c \
 	setfsuid.c \
+	setns.c \
 	setresgid.c \
 	setresuid.c \
 	signalfd.c \
diff --git a/libc/sysdeps/linux/common/bits/sched.h b/libc/sysdeps/linux/common/bits/sched.h
index a5eb6ee..9436f66 100644
--- a/libc/sysdeps/linux/common/bits/sched.h
+++ b/libc/sysdeps/linux/common/bits/sched.h
@@ -85,6 +85,10 @@ extern int unshare (int __flags) __THROW;
 
 /* Get index of currently used CPU.  */
 extern int sched_getcpu (void) __THROW;
+
+/* Switch process to namespace of type NSTYPE indicated by FD.  */
+extern int setns (int __fd, int __nstype) __THROW;
+
 #endif
 
 __END_DECLS
diff --git a/libc/sysdeps/linux/common/setns.c b/libc/sysdeps/linux/common/setns.c
new file mode 100644
index 0000000..376bf26
--- /dev/null
+++ b/libc/sysdeps/linux/common/setns.c
@@ -0,0 +1,18 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * setns() for uClibc
+ *
+ * Copyright (C) 2014 Khem Raj <raj.khem@gmail.com>
+ *
+ * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
+ */
+
+#include <sys/syscall.h>
+#include <sched.h>
+
+/*
+ * setns()
+ */
+#ifdef __NR_setns
+_syscall2(int, setns, int, fd, int, nstype)
+#endif
-- 
1.9.0