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 <netdb.h>
32 #include <stdio.h>
33 #include <stdlib.h>
34 #include <unistd.h>
35 #include <signal.h>
36 #include <errno.h>
37 #include <string.h>
38 #include <err.h>
39
40 #include "stress.h"
41
42 #define NB (400 * 1024 * 1024)
43
44 int port;
45 int bufsize;
46
47 static void
reader(void)48 reader(void) {
49 int tcpsock, msgsock;
50 int on;
51 socklen_t len;
52 struct sockaddr_in inetaddr, inetpeer;
53 int n, t, *buf;
54
55 on = 1;
56 if ((tcpsock = socket(AF_INET, SOCK_STREAM, 0)) < 0)
57 err(1, "socket(), %s:%d", __FILE__, __LINE__);
58
59 if (setsockopt(tcpsock,
60 SOL_SOCKET, SO_REUSEADDR, (char *)&on, sizeof(on)) < 0)
61 err(1, "setsockopt(), %s:%d", __FILE__, __LINE__);
62
63 inetaddr.sin_family = AF_INET;
64 inetaddr.sin_addr.s_addr = INADDR_ANY;
65 inetaddr.sin_port = htons(port);
66 inetaddr.sin_len = sizeof(inetaddr);
67
68 if (bind(tcpsock,
69 (struct sockaddr *)&inetaddr, sizeof (inetaddr)) < 0)
70 err(1, "bind(), %s:%d", __FILE__, __LINE__);
71
72 if (listen(tcpsock, 5) < 0)
73 err(1, "listen(), %s:%d", __FILE__, __LINE__);
74
75 if ((random_int(1,100) > 60) || (op->hog == 1)) {
76 usleep(random_int(1000000,1000000) * 60);
77 }
78
79 len = sizeof(inetpeer);
80 if ((msgsock = accept(tcpsock,
81 (struct sockaddr *)&inetpeer, &len)) < 0)
82 err(1, "accept(), %s:%d", __FILE__, __LINE__);
83
84 t = 0;
85 if ((buf = malloc(bufsize)) == NULL)
86 err(1, "malloc(%d), %s:%d", bufsize, __FILE__, __LINE__);
87 while (done_testing == 0) {
88 if ((n = read(msgsock, buf, bufsize)) < 0)
89 err(1, "read(), %s:%d", __FILE__, __LINE__);
90 t += n;
91 if (n == 0) break;
92 }
93 close(msgsock);
94 return;
95 }
96
97 static void
writer(void)98 writer(void) {
99 int tcpsock, on;
100 struct sockaddr_in inetaddr;
101 struct hostent *hostent;
102 int i, *buf, r;
103
104 on = 1;
105 for (i = 1; i < 5; i++) {
106 if ((tcpsock = socket(AF_INET, SOCK_STREAM, 0)) < 0)
107 err(1, "socket(), %s:%d", __FILE__, __LINE__);
108
109 if (setsockopt(tcpsock,
110 SOL_SOCKET, SO_REUSEADDR, (char *)&on, sizeof(on)) < 0)
111 err(1, "setsockopt(), %s:%d", __FILE__, __LINE__);
112
113 hostent = gethostbyname ("localhost");
114 memcpy (&inetaddr.sin_addr.s_addr, hostent->h_addr,
115 sizeof (struct in_addr));
116
117 inetaddr.sin_family = AF_INET;
118 inetaddr.sin_addr.s_addr = INADDR_ANY;
119 inetaddr.sin_port = htons(port);
120 inetaddr.sin_len = sizeof(inetaddr);
121
122 r = connect(tcpsock, (struct sockaddr *) &inetaddr,
123 sizeof(inetaddr));
124 if (r == 0)
125 break;
126 sleep(1);
127 close(tcpsock);
128 }
129 if (r < 0)
130 err(1, "connect(), %s:%d", __FILE__, __LINE__);
131
132 if ((buf = malloc(bufsize)) == NULL)
133 err(1, "malloc(%d), %s:%d", bufsize, __FILE__, __LINE__);
134 for (i = 0; i < bufsize / sizeof(int); i++)
135 buf[i] = i;
136
137 for (;;) {
138 for (i = 0; i < NB; i+= bufsize) {
139 if (write(tcpsock, buf, bufsize) < 0) {
140 if (errno == EPIPE)
141 return;
142 err(1, "write(%d), %s:%d", tcpsock,
143 __FILE__, __LINE__);
144 }
145 }
146 }
147 return;
148 }
149
150 int
setup(int nb)151 setup(int nb)
152 {
153 port = 12340 + nb;
154 bufsize = 2 << random_int(1, 12);
155 return (0);
156 }
157
158 void
cleanup(void)159 cleanup(void)
160 {
161 }
162
163 int
test(void)164 test(void)
165 {
166 pid_t pid;
167
168 if ((pid = fork()) == 0) {
169 writer();
170 exit(EXIT_SUCCESS);
171
172 } else if (pid > 0) {
173 reader();
174 kill(pid, SIGINT);
175 } else
176 err(1, "fork(), %s:%d", __FILE__, __LINE__);
177
178 return (0);
179 }
180