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 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 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 151 setup(int nb) 152 { 153 port = 12340 + nb; 154 bufsize = 2 << random_int(1, 12); 155 return (0); 156 } 157 158 void 159 cleanup(void) 160 { 161 } 162 163 int 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