kc3-lang/gnulib/tests/test-areadlink.h

• Show log

  Commit

• Hash : 32a72f45
  Author :
  Date : 2023-01-01T01:14:21
  

  maint: run 'make update-copyright'
  

Download

• tests/test-areadlink.h

• /* Tests of areadlink and friends.
     Copyright (C) 2009-2023 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 <https://www.gnu.org/licenses/>.  */
  
  /* Written by Eric Blake <ebb9@byu.net>, 2009.  */
  
  /* This file is designed to test areadlink(a),
     areadlink_with_size(a,b), and areadlinkat(AT_FDCWD,a).  FUNC is the
     function to test; a length is always supplied, but may be ignored.
     Assumes that BASE and ASSERT are already defined, and that
     appropriate headers are already included.  If PRINT, warn before
     skipping symlink tests with status 77.  */
  
  static int
  test_areadlink (char * (*func) (char const *, size_t), bool print)
  {
    /* Sanity checks of failures.  Mingw lacks symlink, but areadlink can
       still distinguish between various errors.  */
    errno = 0;
    ASSERT (func ("no_such", 1) == NULL);
    ASSERT (errno == ENOENT);
    errno = 0;
    ASSERT (func ("no_such/", 1) == NULL);
    ASSERT (errno == ENOENT);
    errno = 0;
    ASSERT (func ("", 1) == NULL);
    ASSERT (errno == ENOENT || errno == EINVAL);
    errno = 0;
    ASSERT (func (".", 1) == NULL);
    ASSERT (errno == EINVAL);
    errno = 0;
    ASSERT (func ("./", 1) == NULL);
    ASSERT (errno == EINVAL);
    ASSERT (close (creat (BASE "file", 0600)) == 0);
    errno = 0;
    ASSERT (func (BASE "file", 1) == NULL);
    ASSERT (errno == EINVAL);
    errno = 0;
    ASSERT (func (BASE "file/", 1) == NULL);
    ASSERT (errno == ENOTDIR || errno == EINVAL); /* AIX yields EINVAL */
    ASSERT (unlink (BASE "file") == 0);
  
    /* Now test actual symlinks.  */
    if (symlink (BASE "dir", BASE "link"))
      {
        if (print)
          fputs ("skipping test: symlinks not supported on this file system\n",
                 stderr);
        return 77;
      }
    ASSERT (mkdir (BASE "dir", 0700) == 0);
    errno = 0;
    ASSERT (func (BASE "link/", 1) == NULL);
    ASSERT (errno == EINVAL);
    {
      /* Too small a guess is okay.  */
      char *buf = func (BASE "link", 1);
      ASSERT (buf);
      ASSERT (strcmp (buf, BASE "dir") == 0);
      free (buf);
      /* Too large a guess is okay.  */
      buf = func (BASE "link", 10000000);
      ASSERT (buf);
      ASSERT (strcmp (buf, BASE "dir") == 0);
      free (buf);
    }
    ASSERT (rmdir (BASE "dir") == 0);
    ASSERT (unlink (BASE "link") == 0);
  
    return 0;
  }
  

Download