1 /*
2 * Check decoding and dumping of sendto and recvfrom syscalls.
3 *
4 * Copyright (c) 2015-2016 Dmitry V. Levin <ldv@altlinux.org>
5 * Copyright (c) 2016-2017 The strace developers.
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. The name of the author may not be used to endorse or promote products
17 * derived from this software without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
24 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31 #include "tests.h"
32 #include <assert.h>
33 #include <string.h>
34 #include <unistd.h>
35 #include <sys/socket.h>
36 #include <sys/wait.h>
37
38 static void
transpose(char * str,int len)39 transpose(char *str, int len)
40 {
41 int i;
42
43 for (i = 0; i < len / 2; ++i) {
44 char c = str[i];
45 str[i] = str[len - 1 - i];
46 str[len - 1 - i] = c;
47 }
48 }
49
50 int
main(int ac,char ** av)51 main(int ac, char **av)
52 {
53 assert(ac == 2);
54 const int len = strlen(av[1]);
55 assert(len);
56
57 (void) close(0);
58 (void) close(1);
59
60 int sv[2];
61 if (socketpair(AF_UNIX, SOCK_STREAM, 0, sv))
62 perror_msg_and_skip("socketpair");
63
64 pid_t pid = fork();
65 if (pid < 0)
66 perror_msg_and_fail("fork");
67
68 if (pid) {
69 assert(close(1) == 0);
70 transpose(av[1], len);
71 assert(sendto(0, av[1], len, MSG_DONTROUTE, NULL, 0) == len);
72 assert(recvfrom(0, av[1], len, MSG_WAITALL, NULL, NULL) == len);
73 assert(close(0) == 0);
74
75 int status;
76 assert(waitpid(pid, &status, 0) == pid);
77 assert(status == 0);
78 } else {
79 assert(close(0) == 0);
80 assert(recvfrom(1, av[1], len, MSG_WAITALL, NULL, NULL) == len);
81 transpose(av[1], len);
82 assert(sendto(1, av[1], len, MSG_DONTROUTE, NULL, 0) == len);
83 assert(recvfrom(1, av[1], len, MSG_WAITALL, NULL, NULL) == 0);
84 assert(close(1) == 0);
85 }
86
87 return 0;
88 }
89