io/openat_2.c

   1 /* _FORTIFY_SOURCE wrapper for openat.
   2    Copyright (C) 2013-2014 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <http://www.gnu.org/licenses/>.  */
  18
  19 #include <fcntl.h>
  20 #include <stdio.h>
  21
  22 int
  23 __openat_2 (int fd, const char *file, int oflag)
  24 {
  25   if (oflag & O_CREAT)
  26     __fortify_fail ("invalid openat call: O_CREAT without mode");
  27
  28   return __openat (fd, file, oflag);
  29 }