| Dmitry V. Levin | 349750e | 2016-07-18 23:19:51 +0000 | [diff] [blame^] | 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 |
| 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 | } |