Fix porting bug to older POSIXish platforms.

* sysdep.c (emacs_pipe): New function, that implements
pipe2 (fd, O_CLOEXEC) even on hosts that lack O_CLOEXEC.
This should port better to CentOS 5 and to Mac OS X 10.6.
All calls to pipe2 changed.

Fixes: debbugs:14862

1 files changed, 14 insertions, 0 deletions

diff --git a/src/sysdep.c b/src/sysdep.c
index f614d8bc557..82f490e9538 100644
--- a/src/sysdep.c
+++ b/src/sysdep.c
@@ -2201,6 +2201,20 @@ emacs_fopen (char const *file, char const *mode)
   return fd < 0 ? 0 : fdopen (fd, mode);
 }
 
+/* Create a pipe for Emacs use.  */
+
+int
+emacs_pipe (int fd[2])
+{
+  int result = pipe2 (fd, O_CLOEXEC);
+  if (! O_CLOEXEC && result == 0)
+    {
+      fcntl (fd[0], F_SETFD, FD_CLOEXEC);
+      fcntl (fd[1], F_SETFD, FD_CLOEXEC);
+    }
+  return result;
+}
+
 /* Approximate posix_close and POSIX_CLOSE_RESTART well enough for Emacs.
    For the background behind this mess, please see Austin Group defect 529
    <http://austingroupbugs.net/view.php?id=529>.  */