/*
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* Check decoding and dumping of sendto and recvfrom syscalls.
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*
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* Copyright (c) 2015-2016 Dmitry V. Levin <ldv@altlinux.org>
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* Copyright (c) 2016-2017 The strace developers.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "tests.h"
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#include <assert.h>
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#include <string.h>
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#include <unistd.h>
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#include <sys/socket.h>
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#include <sys/wait.h>
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static void
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transpose(char *str, int len)
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{
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int i;
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for (i = 0; i < len / 2; ++i) {
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char c = str[i];
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str[i] = str[len - 1 - i];
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str[len - 1 - i] = c;
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}
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}
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int
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main(int ac, char **av)
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{
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assert(ac == 2);
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const int len = strlen(av[1]);
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assert(len);
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(void) close(0);
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(void) close(1);
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int sv[2];
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if (socketpair(AF_UNIX, SOCK_STREAM, 0, sv))
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perror_msg_and_skip("socketpair");
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pid_t pid = fork();
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if (pid < 0)
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perror_msg_and_fail("fork");
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if (pid) {
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assert(close(1) == 0);
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transpose(av[1], len);
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assert(sendto(0, av[1], len, MSG_DONTROUTE, NULL, 0) == len);
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assert(recvfrom(0, av[1], len, MSG_WAITALL, NULL, NULL) == len);
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assert(close(0) == 0);
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int status;
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assert(waitpid(pid, &status, 0) == pid);
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assert(status == 0);
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} else {
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assert(close(0) == 0);
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assert(recvfrom(1, av[1], len, MSG_WAITALL, NULL, NULL) == len);
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transpose(av[1], len);
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assert(sendto(1, av[1], len, MSG_DONTROUTE, NULL, 0) == len);
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assert(recvfrom(1, av[1], len, MSG_WAITALL, NULL, NULL) == 0);
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assert(close(1) == 0);
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}
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return 0;
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}
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