1349750e1bcd8088bbe94e0670a6d2d5bdf863202Dmitry V. Levin/* 2349750e1bcd8088bbe94e0670a6d2d5bdf863202Dmitry V. Levin * Check silent decoding of sendmmsg and recvmmsg syscalls. 3349750e1bcd8088bbe94e0670a6d2d5bdf863202Dmitry V. Levin * 4349750e1bcd8088bbe94e0670a6d2d5bdf863202Dmitry V. Levin * Copyright (c) 2016 Dmitry V. Levin <ldv@altlinux.org> 5349750e1bcd8088bbe94e0670a6d2d5bdf863202Dmitry V. Levin * All rights reserved. 6349750e1bcd8088bbe94e0670a6d2d5bdf863202Dmitry V. Levin * 7349750e1bcd8088bbe94e0670a6d2d5bdf863202Dmitry V. Levin * Redistribution and use in source and binary forms, with or without 8349750e1bcd8088bbe94e0670a6d2d5bdf863202Dmitry V. Levin * modification, are permitted provided that the following conditions 9349750e1bcd8088bbe94e0670a6d2d5bdf863202Dmitry V. Levin * are met: 10349750e1bcd8088bbe94e0670a6d2d5bdf863202Dmitry V. Levin * 1. Redistributions of source code must retain the above copyright 11349750e1bcd8088bbe94e0670a6d2d5bdf863202Dmitry V. Levin * notice, this list of conditions and the following disclaimer. 12349750e1bcd8088bbe94e0670a6d2d5bdf863202Dmitry V. Levin * 2. Redistributions in binary form must reproduce the above copyright 13349750e1bcd8088bbe94e0670a6d2d5bdf863202Dmitry V. Levin * notice, this list of conditions and the following disclaimer in the 14349750e1bcd8088bbe94e0670a6d2d5bdf863202Dmitry V. Levin * documentation and/or other materials provided with the distribution. 15349750e1bcd8088bbe94e0670a6d2d5bdf863202Dmitry V. Levin * 3. The name of the author may not be used to endorse or promote products 16349750e1bcd8088bbe94e0670a6d2d5bdf863202Dmitry V. Levin * derived from this software without specific prior written permission. 17349750e1bcd8088bbe94e0670a6d2d5bdf863202Dmitry V. Levin * 18349750e1bcd8088bbe94e0670a6d2d5bdf863202Dmitry V. Levin * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 19349750e1bcd8088bbe94e0670a6d2d5bdf863202Dmitry V. Levin * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20349750e1bcd8088bbe94e0670a6d2d5bdf863202Dmitry V. Levin * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21349750e1bcd8088bbe94e0670a6d2d5bdf863202Dmitry V. Levin * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 22349750e1bcd8088bbe94e0670a6d2d5bdf863202Dmitry V. Levin * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 23349750e1bcd8088bbe94e0670a6d2d5bdf863202Dmitry V. Levin * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24349750e1bcd8088bbe94e0670a6d2d5bdf863202Dmitry V. Levin * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25349750e1bcd8088bbe94e0670a6d2d5bdf863202Dmitry V. Levin * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26349750e1bcd8088bbe94e0670a6d2d5bdf863202Dmitry V. Levin * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 27349750e1bcd8088bbe94e0670a6d2d5bdf863202Dmitry V. Levin * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28349750e1bcd8088bbe94e0670a6d2d5bdf863202Dmitry V. Levin */ 29349750e1bcd8088bbe94e0670a6d2d5bdf863202Dmitry V. Levin 30349750e1bcd8088bbe94e0670a6d2d5bdf863202Dmitry V. Levin#include "tests.h" 31349750e1bcd8088bbe94e0670a6d2d5bdf863202Dmitry V. Levin#include <stdio.h> 32349750e1bcd8088bbe94e0670a6d2d5bdf863202Dmitry V. Levin 33349750e1bcd8088bbe94e0670a6d2d5bdf863202Dmitry V. Levin#include "msghdr.h" 34349750e1bcd8088bbe94e0670a6d2d5bdf863202Dmitry V. Levin 35349750e1bcd8088bbe94e0670a6d2d5bdf863202Dmitry V. Levinint 36349750e1bcd8088bbe94e0670a6d2d5bdf863202Dmitry V. Levinmain(void) 37349750e1bcd8088bbe94e0670a6d2d5bdf863202Dmitry V. Levin{ 38349750e1bcd8088bbe94e0670a6d2d5bdf863202Dmitry V. Levin int fds[2]; 39349750e1bcd8088bbe94e0670a6d2d5bdf863202Dmitry V. Levin if (socketpair(AF_UNIX, SOCK_STREAM, 0, fds)) 40349750e1bcd8088bbe94e0670a6d2d5bdf863202Dmitry V. Levin perror_msg_and_skip("socketpair"); 41349750e1bcd8088bbe94e0670a6d2d5bdf863202Dmitry V. Levin 42349750e1bcd8088bbe94e0670a6d2d5bdf863202Dmitry V. Levin char buf = 'A'; 43349750e1bcd8088bbe94e0670a6d2d5bdf863202Dmitry V. Levin struct iovec iov = { .iov_base = &buf, .iov_len = sizeof(buf) }; 44349750e1bcd8088bbe94e0670a6d2d5bdf863202Dmitry V. Levin struct mmsghdr mh = { 45349750e1bcd8088bbe94e0670a6d2d5bdf863202Dmitry V. Levin .msg_hdr = { 46349750e1bcd8088bbe94e0670a6d2d5bdf863202Dmitry V. Levin .msg_iov = &iov, 47349750e1bcd8088bbe94e0670a6d2d5bdf863202Dmitry V. Levin .msg_iovlen = 1 48349750e1bcd8088bbe94e0670a6d2d5bdf863202Dmitry V. Levin } 49349750e1bcd8088bbe94e0670a6d2d5bdf863202Dmitry V. Levin }; 50349750e1bcd8088bbe94e0670a6d2d5bdf863202Dmitry V. Levin 51349750e1bcd8088bbe94e0670a6d2d5bdf863202Dmitry V. Levin int rc = send_mmsg(fds[1], &mh, 1, MSG_DONTWAIT); 52349750e1bcd8088bbe94e0670a6d2d5bdf863202Dmitry V. Levin if (rc < 0) 53349750e1bcd8088bbe94e0670a6d2d5bdf863202Dmitry V. Levin perror_msg_and_skip("sendmmsg"); 54349750e1bcd8088bbe94e0670a6d2d5bdf863202Dmitry V. Levin printf("sendmmsg(%d, %p, 1, MSG_DONTWAIT) = %d\n", fds[1], &mh, rc); 55349750e1bcd8088bbe94e0670a6d2d5bdf863202Dmitry V. Levin 56349750e1bcd8088bbe94e0670a6d2d5bdf863202Dmitry V. Levin struct timespec t = { .tv_sec = 0, .tv_nsec = 12345678 }; 57349750e1bcd8088bbe94e0670a6d2d5bdf863202Dmitry V. Levin rc = recv_mmsg(fds[0], &mh, 1, MSG_DONTWAIT, &t); 58349750e1bcd8088bbe94e0670a6d2d5bdf863202Dmitry V. Levin printf("recvmmsg(%d, %p, 1, MSG_DONTWAIT, %p) = %d\n", 59349750e1bcd8088bbe94e0670a6d2d5bdf863202Dmitry V. Levin fds[0], &mh, &t, rc); 60349750e1bcd8088bbe94e0670a6d2d5bdf863202Dmitry V. Levin 61349750e1bcd8088bbe94e0670a6d2d5bdf863202Dmitry V. Levin puts("+++ exited with 0 +++"); 62349750e1bcd8088bbe94e0670a6d2d5bdf863202Dmitry V. Levin return 0; 63349750e1bcd8088bbe94e0670a6d2d5bdf863202Dmitry V. Levin} 64