diff -r 000000000000 -r c4d124ed9f8e patches/glibc/2.9/320-2.9-assume-pipe2.patch
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/patches/glibc/2.9/320-2.9-assume-pipe2.patch	Sun Apr 19 16:17:11 2009 +0000
@@ -0,0 +1,59 @@
+Original patch from: gentoo/src/patchsets/glibc/2.9/1095_all_glibc-2.9-assume-pipe2.patch
+
+-= BEGIN original header =-
+http://bugs.gentoo.org/250342
+http://sources.redhat.com/bugzilla/show_bug.cgi?id=9685
+
+we cant assume sock_cloexec and pipe2 are bound together as the former defines
+are found in glibc only while the latter are a combo of kernel headers and
+glibc.  so if we do a runtime detection of SOCK_CLOEXEC, but pipe2() is a stub
+inside of glibc, we hit a problem.  for example:
+
+#include <grp.h>
+#include <stdio.h>
+main()
+{
+	getgrnam("portage");
+	if (!popen("ls", "r"))
+		perror("popen()");
+}
+
+getgrnam() will detect that the kernel supports SOCK_CLOEXEC and then set both
+__have_sock_cloexec and __have_pipe2 to true.  but if glibc was built against
+older kernel headers where __NR_pipe2 does not exist, glibc will have a ENOSYS
+stub for it.  so popen() will always fail as glibc assumes pipe2() works.
+
+-= END original header =-
+
+diff -durN glibc-2_9.orig/include/unistd.h glibc-2_9/include/unistd.h
+--- glibc-2_9.orig/include/unistd.h	2008-07-27 20:23:17.000000000 +0200
++++ glibc-2_9/include/unistd.h	2009-02-02 22:01:05.000000000 +0100
+@@ -167,9 +167,6 @@
+ extern int __pause_nocancel (void) attribute_hidden;
+ 
+ extern int __have_sock_cloexec;
+-/* At lot of other functionality became available at the same time as
+-   SOCK_CLOEXEC.  Avoid defining separate variables for all of them
+-   unless it is really necessary.  */
+-#define __have_pipe2 __have_sock_cloexec
++extern int __have_pipe2;
+ 
+ #endif
+diff -durN glibc-2_9.orig/socket/have_sock_cloexec.c glibc-2_9/socket/have_sock_cloexec.c
+--- glibc-2_9.orig/socket/have_sock_cloexec.c	2008-07-25 18:46:23.000000000 +0200
++++ glibc-2_9/socket/have_sock_cloexec.c	2009-02-02 22:01:05.000000000 +0100
+@@ -16,9 +16,14 @@
+    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+    02111-1307 USA.  */
+ 
++#include <fcntl.h>
+ #include <sys/socket.h>
+ #include <kernel-features.h>
+ 
+ #if defined SOCK_CLOEXEC && !defined __ASSUME_SOCK_CLOEXEC
+ int __have_sock_cloexec;
+ #endif
++
++#if defined O_CLOEXEC && !defined __ASSUME_PIPE2
++int __have_pipe2;
++#endif