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# $FreeBSD$ 29# 30 31# Test high water mark for freeblks 32 33. ../default.cfg 34 35here=`pwd` 36cd /tmp 37sed '1,/^EOF/d' < $here/$0 > truncate.c 38cc -o truncate -Wall -O2 truncate.c 39rm -f truncate.c 40[ -d $RUNDIR ] || mkdir -p $RUNDIR 41cd $RUNDIR 42 43/tmp/truncate 44 45rm -f /tmp/truncate 46exit 0 47EOF 48#include <fcntl.h> 49#include <err.h> 50#include <stdio.h> 51#include <stdlib.h> 52#include <unistd.h> 53#include <sys/wait.h> 54 55#define SIZ 512 56char buf[SIZ]; 57 58void 59test(void) 60{ 61 int fd[10], i, j; 62 char name[128]; 63 64 for (j = 0; j < 10; j++) { 65 sprintf(name, "%05d.%05d", getpid(), j); 66 if ((fd[j] = open(name, O_WRONLY | O_CREAT | O_APPEND, 0666)) == -1) 67 err(1, name); 68 unlink(name); 69 } 70 71 for (i = 0; i < 100000; i++) { 72 for (j = 0; j < 10; j++) { 73 if (write(fd[j], buf, 2) != 2) 74 err(1, "write"); 75 if (ftruncate(fd[j], 0) == -1) 76 err(1, "ftruncate"); 77 } 78 } 79 80 exit(0); 81} 82int 83main(int argc, char **argv) 84{ 85 int i, status; 86 87 for (i = 0; i < 20; i++) { 88 if (fork() == 0) 89 test(); 90 } 91 for (i = 0; i < 20; i++) 92 wait(&status); 93 94 return (0); 95} 96