kmod: fix O_CLOEXEC not supported on old kernel

O_CLOEXEC is introduced from Linux 2.6.23, so old kernel doesn't have
it, we need check before use.

This patch is much more like a workaround, since it may need fcntl() use
FD_CLOEXEC to replace.

(From OE-Core rev: 44c441222002ee0177100be0431adf91984e90d5)

Signed-off-by: Ting Liu <b28495@freescale.com>
Signed-off-by: Robert Yang <liezhi.yang@windriver.com>
Signed-off-by: Hongxu Jia <hongxu.jia@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-kernel/kmod/kmod.inc

@@ -25,6 +25,7 @@ SRC_URI = "git://git.kernel.org/pub/scm/utils/kernel/kmod/kmod.git \
            file://run-ptest \
            file://ptest.patch \
            file://avoid_parallel_tests.patch \
+           file://fix-O_CLOEXEC.patch \
           "
 
 S = "${WORKDIR}/git"

meta/recipes-kernel/kmod/kmod/fix-O_CLOEXEC.patch

@@ -0,0 +1,38 @@
+From bd43367eee868059770188fd9e9db38520dc6fff Mon Sep 17 00:00:00 2001
+From: Robert Yang <liezhi.yang@windriver.com>
+Date: Wed, 22 Jan 2014 01:06:40 -0500
+Subject: [PATCH] libkmod/libkmod-internal.h: check whether O_CLOEXEC is
+ defined or not
+
+O_CLOEXEC is introduced from Linux 2.6.23, so old kernel doesn't have
+it, we need check before use.
+
+This patch is much more like a workaround, since it may need fcntl() use
+FD_CLOEXEC to replace.
+
+This problem was reported by "Ting Liu <b28495@freescale.com>"
+Signed-off-by: Robert Yang <liezhi.yang@windriver.com>
+
+Upstream-Status: Pending
+---
+ libkmod/libkmod-internal.h |    4 ++++
+ 1 file changed, 4 insertions(+)
+
+diff --git a/libkmod/libkmod-internal.h b/libkmod/libkmod-internal.h
+index 0180124..100b40f 100644
+--- a/libkmod/libkmod-internal.h
++++ b/libkmod/libkmod-internal.h
+@@ -9,6 +9,10 @@
+ #include "macro.h"
+ #include "libkmod.h"
+ 
++#ifndef O_CLOEXEC
++#define O_CLOEXEC 0
++#endif
++
+ static _always_inline_ _printf_format_(2, 3) void
+ 	kmod_log_null(struct kmod_ctx *ctx, const char *format, ...) {}
+ 
+-- 
+1.7.10.4
+