1 /*
2 * Check decoding and dumping of sendto and recvfrom syscalls.
3 *
4 * Copyright (c) 2015-2016 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 <assert.h>
32 #include <string.h>
33 #include <unistd.h>
34 #include <sys/socket.h>
35 #include <sys/wait.h>
36
37 static void
transpose(char * str,int len)38 transpose(char *str, int len)
39 {
40 int i;
41
42 for (i = 0; i < len / 2; ++i) {
43 char c = str[i];
44 str[i] = str[len - 1 - i];
45 str[len - 1 - i] = c;
46 }
47 }
48
49 int
main(int ac,char ** av)50 main(int ac, char **av)
51 {
52 assert(ac == 2);
53 const int len = strlen(av[1]);
54 assert(len);
55
56 (void) close(0);
57 (void) close(1);
58
59 int sv[2];
60 if (socketpair(AF_UNIX, SOCK_STREAM, 0, sv))
61 perror_msg_and_skip("socketpair");
62
63 pid_t pid = fork();
64 if (pid < 0)
65 perror_msg_and_fail("fork");
66
67 if (pid) {
68 assert(close(1) == 0);
69 transpose(av[1], len);
70 assert(sendto(0, av[1], len, MSG_DONTROUTE, NULL, 0) == len);
71 assert(recvfrom(0, av[1], len, MSG_WAITALL, NULL, NULL) == len);
72 assert(close(0) == 0);
73
74 int status;
75 assert(waitpid(pid, &status, 0) == pid);
76 assert(status == 0);
77 } else {
78 assert(close(0) == 0);
79 assert(recvfrom(1, av[1], len, MSG_WAITALL, NULL, NULL) == len);
80 transpose(av[1], len);
81 assert(sendto(1, av[1], len, MSG_DONTROUTE, NULL, 0) == len);
82 assert(recvfrom(1, av[1], len, MSG_WAITALL, NULL, NULL) == 0);
83 assert(close(1) == 0);
84 }
85
86 return 0;
87 }
88