text: /* Invoke openat, but avoid some glitches.
  
     Copyright (C) 2005-2006, 2008-2011 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));
  }
  