commit f103a48636a7979c68c7a64cb381a4d0942c5109
Author: Ian Kent <raven@themaw.net>
Date:   Mon Nov 13 09:48:39 2017 +0800

    autofs-5.1.3 - update configure to check for pipe2(2)
    
    In a bug report by John Salmon it appears that the use of __have_pipe2
    isn't doing what's needed when checking for pipe2(2).
    
    Hopefully updating configure to explicity check for pipe2(2), lifted
    from John's patch, will be more reliable.
    
    Signed-off-by: Ian Kent <raven@themaw.net>

---
 CHANGELOG           |    1 +
 configure           |   12 ++++++++++++
 configure.in        |    2 ++
 include/automount.h |    2 +-
 include/config.h.in |    3 +++
 5 files changed, 19 insertions(+), 1 deletion(-)

--- autofs-5.0.7.orig/CHANGELOG
+++ autofs-5.0.7/CHANGELOG
@@ -285,6 +285,7 @@
 - fix memory leak in umount_amd_ext_mount().
 - fix strerror_r() parameter declaration in do program_mount().
 - fix incorrect check in validate_program_options().
+- update configure to check for pipe2(2).
 
 25/07/2012 autofs-5.0.7
 =======================
--- autofs-5.0.7.orig/configure.in
+++ autofs-5.0.7/configure.in
@@ -153,6 +153,8 @@ AF_CHECK_SSS_LIB(SSS_AUTOFS, libsss_auto
 AC_SUBST(HAVE_SSS_AUTOFS)
 AC_SUBST(sssldir)
 
+AC_CHECK_FUNCS(pipe2)
+
 #
 # Newer mounts have the -s (sloppy) option to ignore unknown options,
 # good for portability
--- autofs-5.0.7.orig/include/automount.h
+++ autofs-5.0.7/include/automount.h
@@ -653,7 +653,7 @@ static inline int open_pipe(int pipefd[2
 {
 	int ret;
 
-#if defined(O_CLOEXEC) && defined(SOCK_CLOEXEC) && defined(__have_pipe2)
+#if defined(O_CLOEXEC) && defined(SOCK_CLOEXEC) && defined(HAVE_PIPE2)
 	if (cloexec_works != -1) {
 		ret = pipe2(pipefd, O_CLOEXEC);
 		if (ret != -1)
--- autofs-5.0.7.orig/include/config.h.in
+++ autofs-5.0.7/include/config.h.in
@@ -54,6 +54,9 @@
 /* define if you have MOUNT_NFS */
 #undef HAVE_MOUNT_NFS
 
+/* Define to 1 if you have the `pipe2' function. */
+#undef HAVE_PIPE2
+
 /* define if the mount command supports the -s option */
 #undef HAVE_SLOPPY_MOUNT
 
--- autofs-5.0.7.orig/configure
+++ autofs-5.0.7/configure
@@ -3955,6 +3955,18 @@ fi
 
 
 
+for ac_func in pipe2
+do :
+  ac_fn_c_check_func "$LINENO" "pipe2" "ac_cv_func_pipe2"
+if test "x$ac_cv_func_pipe2" = xyes; then :
+  cat >>confdefs.h <<_ACEOF
+#define HAVE_PIPE2 1
+_ACEOF
+
+fi
+done
+
+
 #
 # Newer mounts have the -s (sloppy) option to ignore unknown options,
 # good for portability