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/* Tests of areadlinkat_with_size.
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. */
#include <config.h>
#include "areadlink.h"
#include <fcntl.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
#include <unistd.h>
#include "ignore-value.h"
#include "macros.h"
#define BASE "test-areadlinkat-with-size.t"
#include "test-areadlink.h"
static int dfd = AT_FDCWD;
/* Wrapper for testing areadlinkat_with_size. */
static char *
do_areadlinkat_with_size (char const *name, size_t size)
{
return areadlinkat_with_size (dfd, name, size);
}
int
main (void)
{
int result;
/* Remove any leftovers from a previous partial run. */
ignore_value (system ("rm -rf " BASE "*"));
/* Basic tests. */
result = test_areadlink (do_areadlinkat_with_size, false);
dfd = open (".", O_RDONLY);
ASSERT (0 <= dfd);
ASSERT (test_areadlink (do_areadlinkat_with_size, false) == result);
/* Relative tests. */
if (result == 77)
fputs ("skipping test: symlinks not supported on this file system\n",
stderr);
else
{
char *buf;
ASSERT (symlink ("nowhere", BASE "link") == 0);
ASSERT (mkdir (BASE "dir", 0700) == 0);
ASSERT (chdir (BASE "dir") == 0);
buf = areadlinkat_with_size (dfd, BASE "link", strlen (BASE "link"));
ASSERT (buf);
ASSERT (strcmp (buf, "nowhere") == 0);
free (buf);
errno = 0;
ASSERT (areadlinkat_with_size (-1, BASE "link", 1) == NULL);
ASSERT (errno == EBADF);
errno = 0;
ASSERT (areadlinkat_with_size (AT_FDCWD, BASE "link", 1) == NULL);
ASSERT (errno == ENOENT);
ASSERT (chdir ("..") == 0);
ASSERT (rmdir (BASE "dir") == 0);
ASSERT (unlink (BASE "link") == 0);
}
ASSERT (close (dfd) == 0);
return result;
}
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