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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;
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