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, *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 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 86 setup(int nb) 87 { 88 port = 12340 + nb; 89 bufsize = 2 << random_int(2, 12); 90 return (0); 91 } 92 93 void 94 cleanup(void) 95 { 96 } 97 98 int 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