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
32. ../default.cfg
33
34here=`pwd`
35cd /tmp
36sed '1,/^EOF/d' < $here/$0 > truncate2.c
37cc -o truncate2 -Wall -O2 truncate2.c
38rm -f truncate2.c
39[ -d $RUNDIR ] || mkdir -p $RUNDIR
40cd $RUNDIR
41
42/tmp/truncate2 &
43
44sleep 1
45while ps | grep -v grep | egrep -q "truncate2$"; do
46	$here/../testcases/swap/swap -t 2m -i 20
47done
48
49rm -f /tmp/truncate2
50exit 0
51EOF
52#include <fcntl.h>
53#include <err.h>
54#include <stdio.h>
55#include <stdlib.h>
56#include <unistd.h>
57#include <sys/wait.h>
58
59#define SIZ 512
60char buf[SIZ];
61
62void
63test(void)
64{
65	int fd[10], i, j;
66	char name[128];
67	off_t len;
68
69	for (j = 0; j < 10; j++) {
70		sprintf(name, "%05d.%05d", getpid(), j);
71		fd[j] = open(name, O_WRONLY | O_CREAT | O_APPEND, 0666);
72		if (fd[j] == -1)
73			err(1, name);
74		unlink(name);
75	}
76
77	for (i = 0; i < 100; i++) {
78		for (j = 0; j < 10; j++) {
79			if (write(fd[j], buf, 2) != 2)
80				err(1, "write");
81			len = arc4random() % 1024 * 1024;
82			if (ftruncate(fd[j], len) == -1)
83				err(1, "ftruncate");
84		}
85	}
86
87	exit(0);
88}
89int
90main(int argc, char **argv)
91{
92	int i, status;
93
94	for (i = 0; i < 20; i++) {
95		if (fork() == 0)
96			test();
97	}
98	for (i = 0; i < 20; i++)
99		wait(&status);
100
101	return (0);
102}
103