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/* Tests of fstatat.
Copyright (C) 2009-2022 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 <sys/stat.h>
#include "signature.h"
SIGNATURE_CHECK (fstatat, int, (int, char const *, struct stat *, int));
#include <fcntl.h>
#include <errno.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include "openat.h"
#include "same-inode.h"
#include "ignore-value.h"
#include "macros.h"
#ifndef BASE
# define BASE "test-fstatat.t"
#endif
#include "test-lstat.h"
#include "test-stat.h"
static int dfd = AT_FDCWD;
/* Wrapper around fstatat to test stat behavior. */
static int
do_stat (char const *name, struct stat *st)
{
#ifdef TEST_STATAT
return statat (dfd, name, st);
#else
return fstatat (dfd, name, st, 0);
#endif
}
/* Wrapper around fstatat to test lstat behavior. */
static int
do_lstat (char const *name, struct stat *st)
{
#ifdef TEST_STATAT
return lstatat (dfd, name, st);
#else
return fstatat (dfd, name, st, AT_SYMLINK_NOFOLLOW);
#endif
}
int
main (_GL_UNUSED int argc, char *argv[])
{
int result;
/* Remove any leftovers from a previous partial run. */
ignore_value (system ("rm -rf " BASE "*"));
/* Test behaviour for invalid file descriptors. */
{
struct stat statbuf;
errno = 0;
ASSERT (fstatat (-1, "foo", &statbuf, 0) == -1);
ASSERT (errno == EBADF);
}
{
struct stat statbuf;
close (99);
errno = 0;
ASSERT (fstatat (99, "foo", &statbuf, 0) == -1);
ASSERT (errno == EBADF);
}
result = test_stat_func (do_stat, false);
ASSERT (test_lstat_func (do_lstat, false) == result);
dfd = open (".", O_RDONLY);
ASSERT (0 <= dfd);
ASSERT (test_stat_func (do_stat, false) == result);
ASSERT (test_lstat_func (do_lstat, false) == result);
ASSERT (close (dfd) == 0);
/* FIXME - add additional tests of dfd not at current directory. */
if (result == 77)
fputs ("skipping test: symlinks not supported on this file system\n",
stderr);
return result;
}
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