>From aca08ef1e45f2bbd1356ef190591e350dabfff0c Mon Sep 17 00:00:00 2001
From: Bruno Haible <address@hidden>
Date: Sun, 6 Jan 2019 09:25:59 +0100
Subject: [PATCH 2/3] xstdopen: New module.

* lib/xstdopen.h: New file.
* lib/xstdopen.c: New file.
* modules/xstdopen: New file.
---
 ChangeLog        |  7 +++++++
 lib/xstdopen.c   | 35 +++++++++++++++++++++++++++++++++++
 lib/xstdopen.h   | 28 ++++++++++++++++++++++++++++
 modules/xstdopen | 26 ++++++++++++++++++++++++++
 4 files changed, 96 insertions(+)
 create mode 100644 lib/xstdopen.c
 create mode 100644 lib/xstdopen.h
 create mode 100644 modules/xstdopen

diff --git a/ChangeLog b/ChangeLog
index db51bd8..89e57e6 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,12 @@
 2019-01-06  Bruno Haible  <address@hidden>
 
+	xstdopen: New module.
+	* lib/xstdopen.h: New file.
+	* lib/xstdopen.c: New file.
+	* modules/xstdopen: New file.
+
+2019-01-06  Bruno Haible  <address@hidden>
+
 	stdopen: Fix compilation error with IRIX cc.
 	* lib/stdopen.c (stdopen): Do not use C99-style decl in loop.
 
diff --git a/lib/xstdopen.c b/lib/xstdopen.c
new file mode 100644
index 0000000..677a280
--- /dev/null
+++ b/lib/xstdopen.c
@@ -0,0 +1,35 @@
+/* Ensure that stdin, stdout, stderr are open.
+   Copyright (C) 2019 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include "xstdopen.h"
+
+#include "stdopen.h"
+#include "error.h"
+#include "exitfail.h"
+
+#include "gettext.h"
+#define _(msgid) gettext (msgid)
+
+void
+xstdopen (void)
+{
+  int stdopen_errno = stdopen ();
+  if (stdopen_errno != 0)
+    error (exit_failure, stdopen_errno, _("standard file descriptors"));
+}
diff --git a/lib/xstdopen.h b/lib/xstdopen.h
new file mode 100644
index 0000000..08a8a04
--- /dev/null
+++ b/lib/xstdopen.h
@@ -0,0 +1,28 @@
+/* Ensure that stdin, stdout, stderr are open.
+   Copyright (C) 2019 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Ensures that the file descriptors of stdin, stdout, stderr (0, 1, 2) are
+   open.  Exits the program with an error message upon failure; the error
+   message may not appear if stderr is closed.  */
+extern void xstdopen (void);
+
+#ifdef __cplusplus
+}
+#endif
diff --git a/modules/xstdopen b/modules/xstdopen
new file mode 100644
index 0000000..cd9e570
--- /dev/null
+++ b/modules/xstdopen
@@ -0,0 +1,26 @@
+Description:
+Ensure that stdin, stdout, stderr are open.
+
+Files:
+lib/xstdopen.h
+lib/xstdopen.c
+
+Depends-on:
+stdopen
+error
+gettext-h
+exitfail
+
+configure.ac:
+
+Makefile.am:
+lib_SOURCES += xstdopen.c
+
+Include:
+"xstdopen.h"
+
+License:
+GPL
+
+Maintainer:
+all
-- 
2.7.4