1 /* Test of fdatasync() function.
2 Copyright (C) 2008-2012 Free Software Foundation, Inc.
4 This program is free software: you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 3 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program. If not, see <http://www.gnu.org/licenses/>. */
21 #include "signature.h"
22 SIGNATURE_CHECK (fdatasync, int, (int));
33 const char *file = "test-fdatasync.txt";
35 /* Assuming stdin and stdout are ttys, fdatasync is allowed to fail, but
36 may succeed as an extension. */
37 for (fd = 0; fd < 2; fd++)
38 if (fdatasync (fd) != 0)
40 ASSERT (errno == EINVAL /* POSIX */
41 || errno == ENOTSUP /* seen on MacOS X 10.5 */
42 || errno == EBADF /* seen on AIX 7.1 */
43 || errno == EIO /* seen on mingw */
47 /* fdatasync must fail on invalid fd. */
50 ASSERT (fdatasync (-1) == -1);
51 ASSERT (errno == EBADF);
55 ASSERT (fdatasync (99) == -1);
56 ASSERT (errno == EBADF);
59 fd = open (file, O_WRONLY|O_CREAT|O_TRUNC, 0644);
61 ASSERT (write (fd, "hello", 5) == 5);
62 ASSERT (fdatasync (fd) == 0);
63 ASSERT (close (fd) == 0);
66 /* POSIX is self-contradictory on whether fdatasync must fail on
67 read-only file descriptors. Glibc allows it, as does our
68 implementation if fsync allows it. */
69 fd = open (file, O_RDONLY);
72 ASSERT (fdatasync (fd) == -1);
73 ASSERT (errno == EBADF);
74 ASSERT (close (fd) == 0);
77 ASSERT (unlink (file) == 0);