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 49 reader(void) { 50 int n, t, *buf; 51 52 t = 0; 53 if ((buf = malloc(bufsize)) == NULL) 54 err(1, "malloc(%d), %s:%d", bufsize, __FILE__, __LINE__); 55 while (done_testing == 0) { 56 if ((n = read(sv[0], buf, bufsize)) < 0) 57 err(1, "read(), %s:%d", __FILE__, __LINE__); 58 t += n; 59 if (n == 0) break; 60 } 61 close(sv[0]); 62 return; 63 } 64 65 static void 66 writer(void) { 67 int i, *buf; 68 69 if ((buf = malloc(bufsize)) == NULL) 70 err(1, "malloc(%d), %s:%d", bufsize, __FILE__, __LINE__); 71 for (i = 0; i < bufsize / (int)sizeof(int); i++) 72 buf[i] = i; 73 74 for (;;) { 75 for (i = 0; i < NB; i+= bufsize) { 76 if (write(sv[1], buf, bufsize) < 0) { 77 if (errno == EPIPE) 78 return; 79 err(1, "write(%d), %s:%d", sv[1], 80 __FILE__, __LINE__); 81 } 82 } 83 } 84 return; 85 } 86 87 int 88 setup(int nb) 89 { 90 port = 12340 + nb; 91 bufsize = 2 << random_int(2, 12); 92 return (0); 93 } 94 95 void 96 cleanup(void) 97 { 98 } 99 100 int 101 test(void) 102 { 103 pid_t pid; 104 105 if (socketpair(PF_UNIX, SOCK_STREAM, 0, sv) != 0) 106 err(1, "socketpair()"); 107 if ((pid = fork()) == 0) { 108 writer(); 109 _exit(EXIT_SUCCESS); 110 111 } else if (pid > 0) { 112 reader(); 113 kill(pid, SIGINT); 114 } else 115 err(1, "fork(), %s:%d", __FILE__, __LINE__); 116 117 return (0); 118 } 119