1 /*-
2 * Copyright (c) 2008 Peter Holm <pho@FreeBSD.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 */
27
28 #include <sys/param.h>
29 #include <sys/socket.h>
30 #include <netinet/in.h>
31 #include <err.h>
32 #include <errno.h>
33 #include <netdb.h>
34 #include <signal.h>
35 #include <stdio.h>
36 #include <stdlib.h>
37 #include <string.h>
38 #include <unistd.h>
39
40 #include "stress.h"
41
42 #define NB (400 * 1024 * 1024)
43
44 static int port;
45 static int bufsize;
46 static int sv[2];
47
48 static void
reader(void)49 reader(void) {
50 int n, *buf;
51
52 if ((buf = malloc(bufsize)) == NULL)
53 err(1, "malloc(%d), %s:%d", bufsize, __FILE__, __LINE__);
54 while (done_testing == 0) {
55 if ((n = read(sv[0], buf, bufsize)) < 0)
56 err(1, "read(), %s:%d", __FILE__, __LINE__);
57 if (n == 0) break;
58 }
59 close(sv[0]);
60 return;
61 }
62
63 static void
writer(void)64 writer(void) {
65 int i, *buf;
66
67 if ((buf = malloc(bufsize)) == NULL)
68 err(1, "malloc(%d), %s:%d", bufsize, __FILE__, __LINE__);
69 for (i = 0; i < bufsize / (int)sizeof(int); i++)
70 buf[i] = i;
71
72 for (;;) {
73 for (i = 0; i < NB; i+= bufsize) {
74 if (write(sv[1], buf, bufsize) < 0) {
75 if (errno == EPIPE)
76 return;
77 err(1, "write(%d), %s:%d", sv[1],
78 __FILE__, __LINE__);
79 }
80 }
81 }
82 return;
83 }
84
85 int
setup(int nb)86 setup(int nb)
87 {
88 port = 12340 + nb;
89 bufsize = 2 << random_int(2, 12);
90 return (0);
91 }
92
93 void
cleanup(void)94 cleanup(void)
95 {
96 }
97
98 int
test(void)99 test(void)
100 {
101 pid_t pid;
102
103 if (socketpair(PF_UNIX, SOCK_STREAM, 0, sv) != 0)
104 err(1, "socketpair()");
105 if ((pid = fork()) == 0) {
106 writer();
107 _exit(EXIT_SUCCESS);
108
109 } else if (pid > 0) {
110 reader();
111 kill(pid, SIGINT);
112 } else
113 err(1, "fork(), %s:%d", __FILE__, __LINE__);
114
115 return (0);
116 }
117