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