view tests/test-mknod.c @ 12267:c400da5f66bb

mknod: new module Solaris 9 mknod("name/",mode,dev) mistakenly creates "name" for non-directory mode. FreeBSD 7.2 mknod("dangling/",mode,dev) mistakenly creates the target of the symlink if run as root. FreeBSD and OpenBSD mknod("fifo",S_IFIFO|mode,0) fails for non-root. Use of mknod caused link failures on mingw. * modules/mknod: New file. * m4/mknod.m4 (gl_FUNC_MKNOD): Likewise. * lib/mknod.c (mknod): Likewise. * m4/sys_stat_h.m4 (gl_SYS_STAT_H_DEFAULTS): Set witness defaults. * modules/sys_stat (Makefile.am): Substitute them. * lib/sys_stat.in.h (mknod): Declare replacement. * MODULES.html.sh (Support for systems lacking POSIX:2008): Document it. * doc/posix-functions/mknod.texi (mknod): Likewise. * modules/mknod-tests: New test. * tests/test-mknod.c: Likewise. Signed-off-by: Eric Blake <ebb9@byu.net>
author Eric Blake <ebb9@byu.net>
date Wed, 11 Nov 2009 13:23:04 -0700
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children 33ab12a7cea2
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/* Tests of mknod.
   Copyright (C) 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/>.  */

/* Written by Eric Blake <ebb9@byu.net>, 2009.  */

#include <config.h>

#include <sys/stat.h>

#include <fcntl.h>
#include <errno.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>

#define ASSERT(expr) \
  do                                                                         \
    {                                                                        \
      if (!(expr))                                                           \
        {                                                                    \
          fprintf (stderr, "%s:%d: assertion failed\n", __FILE__, __LINE__);  \
          fflush (stderr);                                                   \
          abort ();                                                          \
        }                                                                    \
    }                                                                        \
  while (0)

#define BASE "test-mknod.t"

#include "test-mkfifo.h"

/* Wrapper around mknod, to create fifos.  */
static int
do_mknod (char const *name, mode_t mode)
{
  return mknod (name, mode | S_IFIFO, 0);
}

int
main (void)
{
  /* Remove any leftovers from a previous partial run.  */
  ASSERT (system ("rm -rf " BASE "*") == 0);

  /* We can only portably test creation of fifos.  Anything else
     requires root privileges and knowledge of device numbers.  */
  return test_mkfifo (do_mknod, true);
}