1#!/bin/sh 2 3# 4# Copyright (c) 2009 Peter Holm <pho@FreeBSD.org> 5# All rights reserved. 6# 7# Redistribution and use in source and binary forms, with or without 8# modification, are permitted provided that the following conditions 9# are met: 10# 1. Redistributions of source code must retain the above copyright 11# notice, this list of conditions and the following disclaimer. 12# 2. Redistributions in binary form must reproduce the above copyright 13# notice, this list of conditions and the following disclaimer in the 14# documentation and/or other materials provided with the distribution. 15# 16# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26# SUCH DAMAGE. 27# 28 29. ../default.cfg 30 31here=`pwd` 32cd /tmp 33sed '1,/^EOF/d' < $here/$0 > truncate2.c 34mycc -o truncate2 -Wall -O2 truncate2.c 35rm -f truncate2.c 36[ -d $RUNDIR ] || mkdir -p $RUNDIR 37cd $RUNDIR 38 39/tmp/truncate2 & 40 41sleep 1 42while ps -x | grep -v grep | egrep -q "truncate2$"; do 43 $here/../testcases/swap/swap -t 2m -i 20 44done 45 46rm -f /tmp/truncate2 47exit 0 48EOF 49#include <fcntl.h> 50#include <err.h> 51#include <stdio.h> 52#include <stdlib.h> 53#include <unistd.h> 54#include <sys/wait.h> 55 56#define SIZ 512 57char buf[SIZ]; 58 59void 60test(void) 61{ 62 int fd[10], i, j; 63 char name[128]; 64 off_t len; 65 66 for (j = 0; j < 10; j++) { 67 sprintf(name, "%05d.%05d", getpid(), j); 68 fd[j] = open(name, O_WRONLY | O_CREAT | O_APPEND, 0666); 69 if (fd[j] == -1) 70 err(1, "%s", name); 71 unlink(name); 72 } 73 74 for (i = 0; i < 100; i++) { 75 for (j = 0; j < 10; j++) { 76 if (write(fd[j], buf, 2) != 2) 77 err(1, "write"); 78 len = arc4random() % 1024 * 1024; 79 if (ftruncate(fd[j], len) == -1) 80 err(1, "ftruncate"); 81 } 82 } 83 84 exit(0); 85} 86int 87main(int argc, char **argv) 88{ 89 int i, status; 90 91 for (i = 0; i < 20; i++) { 92 if (fork() == 0) 93 test(); 94 } 95 for (i = 0; i < 20; i++) 96 wait(&status); 97 98 return (0); 99} 100