/* Invoke openat, but avoid some glitches.

   Copyright (C) 2005-2006, 2008-2017 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 <http://www.gnu.org/licenses/>.  */

/* Written by Paul Eggert for open, ported by Eric Blake for openat.  */

#include <config.h>

#include "fcntl-safer.h"

#include <fcntl.h>

#include <stdarg.h>

#include "unistd-safer.h"

int

openat_safer (int fd, char const *file, int flags, ...)

{

  mode_t mode = 0;

  if (flags & O_CREAT)

    {

      va_list ap;

      va_start (ap, flags);

      /* We have to use PROMOTED_MODE_T instead of mode_t, otherwise GCC 4

         creates crashing code when 'mode_t' is smaller than 'int'.  */

      mode = va_arg (ap, PROMOTED_MODE_T);

      va_end (ap);

    }

  return fd_safer (openat (fd, file, flags, mode));

}