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/* Test for realpath/canonicalize function.
Copyright (C) 1998-2023 Free Software Foundation, Inc.
This file is part of the GNU C Library.
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
<https://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;
}
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