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 <sys/wait.h>
31
32 #include <netinet/in.h>
33
34 #include <err.h>
35 #include <errno.h>
36 #include <netdb.h>
37 #include <signal.h>
38 #include <stdio.h>
39 #include <stdlib.h>
40 #include <string.h>
41 #include <unistd.h>
42
43 #include "stress.h"
44
45 #define NB (400 * 1024 * 1024)
46
47 static int port;
48 static int bufsize;
49
50 static void
reader(void)51 reader(void) {
52 struct sockaddr_in inetaddr, inetpeer;
53 socklen_t len;
54 int on;
55 int n, *buf;
56 int tcpsock, msgsock;
57
58 alarm(op->run_time + 30);
59 on = 1;
60 if ((tcpsock = socket(AF_INET, SOCK_STREAM, 0)) < 0)
61 err(1, "socket(), %s:%d", __FILE__, __LINE__);
62
63 if (setsockopt(tcpsock,
64 SOL_SOCKET, SO_REUSEADDR, (char *)&on, sizeof(on)) < 0)
65 err(1, "setsockopt(), %s:%d", __FILE__, __LINE__);
66
67 inetaddr.sin_family = AF_INET;
68 inetaddr.sin_addr.s_addr = INADDR_ANY;
69 inetaddr.sin_port = htons(port);
70 inetaddr.sin_len = sizeof(inetaddr);
71
72 if (bind(tcpsock,
73 (struct sockaddr *)&inetaddr, sizeof (inetaddr)) < 0)
74 err(1, "bind(), %s:%d", __FILE__, __LINE__);
75
76 if (listen(tcpsock, 5) < 0)
77 err(1, "listen(), %s:%d", __FILE__, __LINE__);
78
79 if ((random_int(1,100) > 60) || (op->hog == 1)) {
80 usleep(random_int(1000000,1000000) * 60);
81 }
82
83 len = sizeof(inetpeer);
84 if ((msgsock = accept(tcpsock,
85 (struct sockaddr *)&inetpeer, &len)) < 0)
86 err(1, "accept(), %s:%d", __FILE__, __LINE__);
87
88 if ((buf = malloc(bufsize)) == NULL)
89 err(1, "malloc(%d), %s:%d", bufsize, __FILE__, __LINE__);
90 while (done_testing == 0) {
91 if ((n = read(msgsock, buf, bufsize)) < 0)
92 err(1, "read(), %s:%d", __FILE__, __LINE__);
93 if (n == 0) break;
94 }
95 close(msgsock);
96 return;
97 }
98
99 static void
writer(void)100 writer(void) {
101 struct sockaddr_in inetaddr;
102 struct hostent *hostent;
103 int i, *buf, r;
104 int tcpsock, on;
105
106 alarm(op->run_time + 30);
107 on = 1;
108 for (i = 1; i < 5; i++) {
109 if ((tcpsock = socket(AF_INET, SOCK_STREAM, 0)) < 0)
110 err(1, "socket(), %s:%d", __FILE__, __LINE__);
111
112 if (setsockopt(tcpsock,
113 SOL_SOCKET, SO_REUSEADDR, (char *)&on, sizeof(on)) < 0)
114 err(1, "setsockopt(), %s:%d", __FILE__, __LINE__);
115
116 hostent = gethostbyname ("localhost");
117 bzero((char *) &inetaddr, sizeof(inetaddr));
118 memcpy (&inetaddr.sin_addr.s_addr, hostent->h_addr,
119 sizeof (struct in_addr));
120
121 inetaddr.sin_family = AF_INET;
122 inetaddr.sin_port = htons(port);
123 inetaddr.sin_len = sizeof(inetaddr);
124
125 r = connect(tcpsock, (struct sockaddr *) &inetaddr,
126 sizeof(inetaddr));
127 if (r == 0)
128 break;
129 sleep(1);
130 close(tcpsock);
131 }
132 if (r < 0)
133 err(1, "connect(), %s:%d", __FILE__, __LINE__);
134
135 if ((buf = malloc(bufsize)) == NULL)
136 err(1, "malloc(%d), %s:%d", bufsize, __FILE__, __LINE__);
137 for (i = 0; i < bufsize / (int)sizeof(int); i++)
138 buf[i] = i;
139
140 for (;;) {
141 for (i = 0; i < NB; i+= bufsize) {
142 if (write(tcpsock, buf, bufsize) < 0) {
143 if (errno == EPIPE)
144 return;
145 if (errno != ECONNRESET)
146 err(1, "write(%d), %s:%d", tcpsock,
147 __FILE__, __LINE__);
148 _exit(EXIT_SUCCESS);
149 }
150 }
151 }
152 return;
153 }
154
155 int
setup(int nb)156 setup(int nb)
157 {
158 port = 12340 + nb;
159 bufsize = 2 << random_int(1, 12);
160 return (0);
161 }
162
163 void
cleanup(void)164 cleanup(void)
165 {
166 }
167
168 int
test(void)169 test(void)
170 {
171 pid_t pid;
172
173 if ((pid = fork()) == 0) {
174 writer();
175 _exit(EXIT_SUCCESS);
176
177 } else if (pid > 0) {
178 reader();
179 kill(pid, SIGINT);
180 if (waitpid(pid, NULL, 0) != pid)
181 err(1, "waitpid(%d)", pid);
182 } else
183 err(1, "fork(), %s:%d", __FILE__, __LINE__);
184
185 return (0);
186 }
187