149 lines
4.3 KiB
C
149 lines
4.3 KiB
C
/* Tests of mkfifoat and mknodat.
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Copyright (C) 2009-2025 Free Software Foundation, Inc.
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>. */
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/* Written by Eric Blake <ebb9@byu.net>, 2009. */
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#include <config.h>
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#include <sys/stat.h>
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#include "signature.h"
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SIGNATURE_CHECK (mkfifoat, int, (int, char const *, mode_t));
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SIGNATURE_CHECK (mknodat, int, (int, char const *, mode_t, dev_t));
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#include <fcntl.h>
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#include <errno.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include "ignore-value.h"
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#include "macros.h"
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#define BASE "test-mkfifoat.t"
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#include "test-mkfifo.h"
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typedef int (*test_func) (int, char const *, mode_t);
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static int dfd = AT_FDCWD;
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/* Wrapper to test mknodat like mkfifoat. */
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static int
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test_mknodat (int fd, char const *name, mode_t mode)
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{
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/* This is the only portable use of mknodat, per POSIX. */
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return mknodat (fd, name, mode | S_IFIFO, 0);
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}
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/* Wrapper to test mkfifoat like mkfifo. */
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static int
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do_mkfifoat (char const *name, mode_t mode)
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{
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return mkfifoat (dfd, name, mode);
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}
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/* Wrapper to test mknodat like mkfifo. */
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static int
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do_mknodat (char const *name, mode_t mode)
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{
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return mknodat (dfd, name, mode | S_IFIFO, 0);
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}
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int
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main (void)
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{
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int i;
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test_func funcs[2] = { mkfifoat, test_mknodat };
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int result;
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/* Remove any leftovers from a previous partial run. */
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ignore_value (system ("rm -rf " BASE "*"));
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/* Basic tests. */
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result = test_mkfifo (do_mkfifoat, true);
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ASSERT (test_mkfifo (do_mknodat, false) == result);
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dfd = open (".", O_RDONLY);
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ASSERT (0 <= dfd);
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ASSERT (test_mkfifo (do_mkfifoat, false) == result);
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ASSERT (test_mkfifo (do_mknodat, false) == result);
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/* Test directory-relative handling of both functions. */
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for (i = 0; i < 2; i++)
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{
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struct stat st;
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test_func func = funcs[i];
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/* Test behaviour for invalid file descriptors. */
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{
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errno = 0;
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ASSERT (func (-1, "foo", 0600) == -1);
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ASSERT (errno == EBADF
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|| errno == ENOSYS /* seen on mingw */
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);
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}
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{
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close (99);
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errno = 0;
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ASSERT (func (99, "foo", 0600) == -1);
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ASSERT (errno == EBADF
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|| errno == ENOSYS /* seen on mingw */
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);
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}
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/* Create fifo while cwd is '.', then stat it from '..'. */
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if (func (AT_FDCWD, BASE "fifo", 0600) != 0)
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ASSERT (errno == ENOSYS); /* seen on native Windows */
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else
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{
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errno = 0;
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ASSERT (func (dfd, BASE "fifo", 0600) == -1);
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ASSERT (errno == EEXIST);
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ASSERT (chdir ("..") == 0);
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errno = 0;
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ASSERT (fstatat (AT_FDCWD, BASE "fifo", &st, 0) == -1);
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ASSERT (errno == ENOENT);
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memset (&st, 0, sizeof st);
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ASSERT (fstatat (dfd, BASE "fifo", &st, 0) == 0);
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ASSERT (S_ISFIFO (st.st_mode));
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ASSERT (unlinkat (dfd, BASE "fifo", 0) == 0);
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}
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/* Create fifo while cwd is '..', then stat it from '.'. */
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if (func (dfd, BASE "fifo", 0600) != 0)
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ASSERT (errno == ENOSYS); /* seen on native Windows */
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else
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{
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ASSERT (fchdir (dfd) == 0);
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errno = 0;
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ASSERT (func (AT_FDCWD, BASE "fifo", 0600) == -1);
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ASSERT (errno == EEXIST);
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memset (&st, 0, sizeof st);
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ASSERT (fstatat (AT_FDCWD, BASE "fifo", &st, AT_SYMLINK_NOFOLLOW)
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== 0);
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ASSERT (S_ISFIFO (st.st_mode));
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memset (&st, 0, sizeof st);
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ASSERT (fstatat (dfd, BASE "fifo", &st, AT_SYMLINK_NOFOLLOW) == 0);
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ASSERT (S_ISFIFO (st.st_mode));
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ASSERT (unlink (BASE "fifo") == 0);
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}
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}
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ASSERT (close (dfd) == 0);
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return test_exit_status;
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}
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