view lib/dirname.c @ 12246:b156d2d1b827

freopen-safer: new module * modules/freopen-safer: New module. * m4/stdio-safer.m4 (gl_FREOPEN_SAFER): New macro. * lib/freopen-safer.c (freopen_safer): New file. * lib/stdio-safer.h (freopen_safer): New declaration. * lib/stdio--.h (freopen): New override. * MODULES.html.sh (File stream based Input/Output): Mention it. * doc/posix-functions/freopen.texi (freopen): Mention pitfalls and freopen-safer module. * doc/posix-functions/stderr.texi (stderr): Likewise. * doc/posix-functions/stdin.texi (stdin): Likewise. * doc/posix-functions/stdout.texi (stdout): Likewise. * modules/freopen-safer-tests: New test. * tests/test-reopen-safer.c: New file. Signed-off-by: Eric Blake <ebb9@byu.net>
author Eric Blake <ebb9@byu.net>
date Thu, 05 Nov 2009 15:13:00 -0700
parents 8bf6ff9a34bd
children b5e42ef33b49
line wrap: on
line source

/* dirname.c -- return all but the last element in a file name

   Copyright (C) 1990, 1998, 2000, 2001, 2003, 2004, 2005, 2006, 2009
   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/>.  */

#include <config.h>

#include "dirname.h"

#include <stdlib.h>
#include <string.h>
#include "xalloc.h"

/* Just like mdir_name (dirname-lgpl.c), except, rather than
   returning NULL upon malloc failure, here, we report the
   "memory exhausted" condition and exit.  */

char *
dir_name (char const *file)
{
  char *result = mdir_name (file);
  if (!result)
    xalloc_die ();
  return result;
}