buildroot

Add missing MSG_CMSG_CLOEXEC

​

Unpatched uClibc toolchains, even using the latest 0.9.33.2, do not

have the MSG_CMSG_CLOEXEC definition. Even though the Buildroot

internal toolchain backend has a uClibc patch to provide it, it

doesn't apply to external toolchains. This patch provides the

definition of MSG_CMSG_CLOEXEC.

​

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

​

Index: b/libnetlink.h

===================================================================

--- a/libnetlink.h

+++ b/libnetlink.h

@@ -7,6 +7,10 @@

 #include <linux/netlink.h>

 #include <linux/rtnetlink.h>

+#ifndef MSG_CMSG_CLOEXEC

+#define MSG_CMSG_CLOEXEC 0x40000000

+#endif

+

 struct rtnl_handle

 {

    int         fd;

Index: b/kacpimon/libnetlink.h

===================================================================

--- a/kacpimon/libnetlink.h

+++ b/kacpimon/libnetlink.h

@@ -7,6 +7,10 @@

 #include <linux/netlink.h>

 #include <linux/rtnetlink.h>

+#ifndef MSG_CMSG_CLOEXEC

+#define MSG_CMSG_CLOEXEC 0x40000000

+#endif

+

 struct rtnl_handle

 {

    int         fd;