From 825b80eaa311b0aec4c00614f38f3eb63949d5a7 Mon Sep 17 00:00:00 2001
From: Laurent Bercot <ska-skaware@skarnet.org>
Date: Tue, 16 Apr 2024 12:57:52 +0000
Subject:  Tentative support for old MacOS with no O_CLOEXEC

 Also add a prototype for gol, not finished yet.

Signed-off-by: Laurent Bercot <ska@appnovation.com>
---
 src/libstddjb/open2.c | 28 ++++++++++++++++++++++++++--
 1 file changed, 26 insertions(+), 2 deletions(-)

(limited to 'src/libstddjb/open2.c')

diff --git a/src/libstddjb/open2.c b/src/libstddjb/open2.c
index 1d2682e..0f23183 100644
--- a/src/libstddjb/open2.c
+++ b/src/libstddjb/open2.c
@@ -1,14 +1,38 @@
 /* ISC license. */
 
+#include <skalibs/sysdeps.h>
 #include <skalibs/nonposix.h>
+
 #include <sys/stat.h>
-#include <fcntl.h>
 #include <errno.h>
 
+#include <skalibs/fcntl.h>
+#include <skalibs/djbunix.h>
+
+#ifdef SKALIBS_HASOCLOEXEC
+
 int open2 (char const *s, unsigned int flags)
 {
   int r ;
   do r = open(s, flags) ;
-  while ((r == -1) && (errno == EINTR)) ;
+  while (r == -1 && errno == EINTR) ;
   return r ;
 }
+
+#else
+
+int open2 (char const *s, unsigned int flags)
+{
+  int fd ;
+  do fd = open(s, flags & ~O_CLOEXEC) ;
+  while (fd == -1 && errno == EINTR) ;
+  if (fd == -1) return -1 ;
+  if (flags & O_CLOEXEC && coe(fd) == -1)
+  {
+    fd_close(fd) ;
+    return -1 ;
+  }
+  return fd ;
+}
+
+#endif
-- 
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