/* Test for realpath/canonicalize function.

   Copyright (C) 1998-2018 Free Software Foundation, Inc.

   This file is part of the GNU C Library.

   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998.

   The GNU C Library is free software; you can redistribute it and/or

   modify it under the terms of the GNU Lesser General Public

   License as published by the Free Software Foundation; either

   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library 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

   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public

   License along with the GNU C Library; if not, see

   <http://www.gnu.org/licenses/>.  */

#include <errno.h>

#include <string.h>

/* Prototype for our test function.  */

extern void do_prepare (int argc, char *argv[]);

extern int do_test (int argc, char *argv[]);

/* We have a preparation function.  */

#define PREPARE do_prepare

#include <test-skeleton.c>

/* Name of the temporary files we create.  */

char *name1;

char *name2;

/* Preparation.  */

void

do_prepare (int argc, char *argv[])

{

  size_t test_dir_len;

  test_dir_len = strlen (test_dir);

  /* Generate the circular symlinks.  */

  name1 = malloc (test_dir_len + sizeof ("/canonXXXXXX"));

  mempcpy (mempcpy (name1, test_dir, test_dir_len),

	   "/canonXXXXXX", sizeof ("/canonXXXXXX"));

  name2 = strdup (name1);

  add_temp_file (mktemp (name1));

  add_temp_file (mktemp (name2));

}

/* Run the test.  */

int

do_test (int argc, char *argv[])

{

  char *canon;

  printf ("create symlinks from %s to %s and vice versa\n", name1, name2);

  if (symlink (name1, name2) == -1

      || symlink (name2, name1) == -1)

    /* We cannot test this.  */

    return 0;

  /* Call the function.  This is equivalent the using `realpath' but the

     function allocates the room for the result.  */

  errno = 0;

  canon = canonicalize_file_name (name1);

  return canon != NULL || errno != ELOOP;

}