90 lines
2.3 KiB
C
90 lines
2.3 KiB
C
/* Test of fsync() function.
|
|
Copyright (C) 2008-2025 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/>. */
|
|
|
|
#include <config.h>
|
|
|
|
#include <unistd.h>
|
|
|
|
#include "signature.h"
|
|
SIGNATURE_CHECK (fsync, int, (int));
|
|
|
|
#include <errno.h>
|
|
#include <fcntl.h>
|
|
|
|
#include "macros.h"
|
|
|
|
int
|
|
main (void)
|
|
{
|
|
int fd;
|
|
const char *file = "test-fsync.txt";
|
|
|
|
/* Assuming stdin and stdout are ttys, fsync is allowed to fail, but
|
|
may succeed as an extension. */
|
|
for (fd = 0; fd < 2; fd++)
|
|
if (fsync (fd) != 0)
|
|
{
|
|
ASSERT (errno == EINVAL /* POSIX */
|
|
|| errno == ENOTSUP /* seen on Mac OS X 10.5 */
|
|
|| errno == EBADF /* seen on AIX 7.1 */
|
|
|| errno == EIO /* seen on mingw */
|
|
);
|
|
}
|
|
|
|
/* fsync must fail on invalid fd. */
|
|
{
|
|
errno = 0;
|
|
ASSERT (fsync (-1) == -1);
|
|
ASSERT (errno == EBADF);
|
|
}
|
|
{
|
|
close (99);
|
|
errno = 0;
|
|
ASSERT (fsync (99) == -1);
|
|
ASSERT (errno == EBADF);
|
|
}
|
|
#ifdef AT_FDCWD
|
|
{
|
|
errno = 0;
|
|
ASSERT (fsync (AT_FDCWD) == -1);
|
|
ASSERT (errno == EBADF);
|
|
}
|
|
#endif
|
|
|
|
fd = open (file, O_WRONLY|O_CREAT|O_TRUNC, 0644);
|
|
ASSERT (0 <= fd);
|
|
ASSERT (write (fd, "hello", 5) == 5);
|
|
ASSERT (fsync (fd) == 0);
|
|
ASSERT (close (fd) == 0);
|
|
|
|
/* For a read-only regular file input file descriptor, fsync should
|
|
succeed (since at least atime changes can be synchronized).
|
|
On AIX and Cygwin, this test would fail. */
|
|
#if !(defined _AIX || defined __CYGWIN__)
|
|
fd = open (file, O_RDONLY);
|
|
ASSERT (0 <= fd);
|
|
{
|
|
char buf[1];
|
|
ASSERT (read (fd, buf, sizeof buf) == sizeof buf);
|
|
}
|
|
ASSERT (fsync (fd) == 0);
|
|
ASSERT (close (fd) == 0);
|
|
#endif
|
|
|
|
ASSERT (unlink (file) == 0);
|
|
|
|
return test_exit_status;
|
|
}
|