Adding upstream version 2.13.1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

gl/lib/openat-die.c

@@ -0,0 +1,62 @@
+/* Report a save- or restore-cwd failure in our openat replacement and then exit.
+
+   Copyright (C) 2005-2006, 2008-2024 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>
+
+#include "openat.h"
+
+#include <stdlib.h>
+
+#ifndef GNULIB_LIBPOSIX
+# include <error.h>
+#endif
+
+#include "exitfail.h"
+
+#include "gettext.h"
+#define _(msgid) gettext (msgid)
+
+_Noreturn void
+openat_save_fail (int errnum)
+{
+#ifndef GNULIB_LIBPOSIX
+  error (exit_failure, errnum,
+         _("unable to record current working directory"));
+#endif
+  /* _Noreturn cannot be applied to error, since it returns
+     when its first argument is 0.  To help compilers understand that this
+     function does not return, call abort.  Also, the abort is a
+     safety feature if exit_failure is 0 (which shouldn't happen).  */
+  abort ();
+}
+
+
+/* Exit with an error about failure to restore the working directory
+   during an openat emulation.  The caller must ensure that fd 2 is
+   not a just-opened fd, even when openat_safer is not in use.  */
+
+_Noreturn void
+openat_restore_fail (int errnum)
+{
+#ifndef GNULIB_LIBPOSIX
+  error (exit_failure, errnum,
+         _("failed to return to initial working directory"));
+#endif
+
+  /* As above.  */
+  abort ();
+}