1 /*
2 * Check silent decoding of sendmmsg and recvmmsg syscalls.
3 *
4 * Copyright (c) 2016 Dmitry V. Levin <ldv@altlinux.org>
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. The name of the author may not be used to endorse or promote products
16 * derived from this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 */
29
30 #include "tests.h"
31 #include <stdio.h>
32
33 #include "msghdr.h"
34
35 int
main(void)36 main(void)
37 {
38 int fds[2];
39 if (socketpair(AF_UNIX, SOCK_STREAM, 0, fds))
40 perror_msg_and_skip("socketpair");
41
42 char buf = 'A';
43 struct iovec iov = { .iov_base = &buf, .iov_len = sizeof(buf) };
44 struct mmsghdr mh = {
45 .msg_hdr = {
46 .msg_iov = &iov,
47 .msg_iovlen = 1
48 }
49 };
50
51 int rc = send_mmsg(fds[1], &mh, 1, MSG_DONTWAIT);
52 if (rc < 0)
53 perror_msg_and_skip("sendmmsg");
54 printf("sendmmsg(%d, %p, 1, MSG_DONTWAIT) = %d\n", fds[1], &mh, rc);
55
56 struct timespec t = { .tv_sec = 0, .tv_nsec = 12345678 };
57 rc = recv_mmsg(fds[0], &mh, 1, MSG_DONTWAIT, &t);
58 printf("recvmmsg(%d, %p, 1, MSG_DONTWAIT, %p) = %d\n",
59 fds[0], &mh, &t, rc);
60
61 puts("+++ exited with 0 +++");
62 return 0;
63 }
64