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/* Tests of mkfifoat and mknodat.
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 <sys/stat.h>
#include "signature.h"
SIGNATURE_CHECK (mkfifoat, int, (int, char const *, mode_t));
SIGNATURE_CHECK (mknodat, int, (int, char const *, mode_t, dev_t));
#include <fcntl.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "ignore-value.h"
#include "macros.h"
#define BASE "test-mkfifoat.t"
#include "test-mkfifo.h"
typedef int (*test_func) (int, char const *, mode_t);
static int dfd = AT_FDCWD;
/* Wrapper to test mknodat like mkfifoat. */
static int
test_mknodat (int fd, char const *name, mode_t mode)
{
/* This is the only portable use of mknodat, per POSIX. */
return mknodat (fd, name, mode | S_IFIFO, 0);
}
/* Wrapper to test mkfifoat like mkfifo. */
static int
do_mkfifoat (char const *name, mode_t mode)
{
return mkfifoat (dfd, name, mode);
}
/* Wrapper to test mknodat like mkfifo. */
static int
do_mknodat (char const *name, mode_t mode)
{
return mknodat (dfd, name, mode | S_IFIFO, 0);
}
int
main (void)
{
int i;
test_func funcs[2] = { mkfifoat, test_mknodat };
int result;
/* Remove any leftovers from a previous partial run. */
ignore_value (system ("rm -rf " BASE "*"));
/* Basic tests. */
result = test_mkfifo (do_mkfifoat, true);
ASSERT (test_mkfifo (do_mknodat, false) == result);
dfd = open (".", O_RDONLY);
ASSERT (0 <= dfd);
ASSERT (test_mkfifo (do_mkfifoat, false) == result);
ASSERT (test_mkfifo (do_mknodat, false) == result);
/* Test directory-relative handling of both functions. */
for (i = 0; i < 2; i++)
{
struct stat st;
test_func func = funcs[i];
/* Test behaviour for invalid file descriptors. */
{
errno = 0;
ASSERT (func (-1, "foo", 0600) == -1);
ASSERT (errno == EBADF
|| errno == ENOSYS /* seen on mingw */
);
}
{
close (99);
errno = 0;
ASSERT (func (99, "foo", 0600) == -1);
ASSERT (errno == EBADF
|| errno == ENOSYS /* seen on mingw */
);
}
/* Create fifo while cwd is '.', then stat it from '..'. */
if (func (AT_FDCWD, BASE "fifo", 0600) != 0)
ASSERT (errno == ENOSYS); /* seen on native Windows */
else
{
errno = 0;
ASSERT (func (dfd, BASE "fifo", 0600) == -1);
ASSERT (errno == EEXIST);
ASSERT (chdir ("..") == 0);
errno = 0;
ASSERT (fstatat (AT_FDCWD, BASE "fifo", &st, 0) == -1);
ASSERT (errno == ENOENT);
memset (&st, 0, sizeof st);
ASSERT (fstatat (dfd, BASE "fifo", &st, 0) == 0);
ASSERT (S_ISFIFO (st.st_mode));
ASSERT (unlinkat (dfd, BASE "fifo", 0) == 0);
}
/* Create fifo while cwd is '..', then stat it from '.'. */
if (func (dfd, BASE "fifo", 0600) != 0)
ASSERT (errno == ENOSYS); /* seen on native Windows */
else
{
ASSERT (fchdir (dfd) == 0);
errno = 0;
ASSERT (func (AT_FDCWD, BASE "fifo", 0600) == -1);
ASSERT (errno == EEXIST);
memset (&st, 0, sizeof st);
ASSERT (fstatat (AT_FDCWD, BASE "fifo", &st, AT_SYMLINK_NOFOLLOW)
== 0);
ASSERT (S_ISFIFO (st.st_mode));
memset (&st, 0, sizeof st);
ASSERT (fstatat (dfd, BASE "fifo", &st, AT_SYMLINK_NOFOLLOW) == 0);
ASSERT (S_ISFIFO (st.st_mode));
ASSERT (unlink (BASE "fifo") == 0);
}
}
ASSERT (close (dfd) == 0);
return 0;
}
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