1#!/bin/sh 2 3# 4# SPDX-License-Identifier: BSD-2-Clause-FreeBSD 5# 6# Copyright (c) 2021 Peter Holm <pho@FreeBSD.org> 7# 8# Redistribution and use in source and binary forms, with or without 9# modification, are permitted provided that the following conditions 10# are met: 11# 1. Redistributions of source code must retain the above copyright 12# notice, this list of conditions and the following disclaimer. 13# 2. Redistributions in binary form must reproduce the above copyright 14# notice, this list of conditions and the following disclaimer in the 15# documentation and/or other materials provided with the distribution. 16# 17# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27# SUCH DAMAGE. 28# 29 30# Truncate test scenario. No problems seen. 31 32. ../default.cfg 33 34odir=`pwd` 35cd /tmp 36sed '1,/^EOF/d' < $odir/$0 > truncate9.c 37mycc -o truncate9 -Wall -Wextra truncate9.c || exit 1 38rm -f truncate9.c 39set -e 40mount | grep "on $mntpoint " | grep -q /dev/md && umount -f $mntpoint 41[ -c /dev/md$mdstart ] && mdconfig -d -u $mdstart 42mdconfig -a -t swap -s 2g -u $mdstart 43newfs $newfs_flags -n md$mdstart > /dev/null 44mount /dev/md$mdstart $mntpoint 45set +e 46 47(cd $odir/../testcases/swap; ./swap -t 5m -i 20 -l 100) > /dev/null & 48cd $mntpoint 49for i in `jot 5`; do 50 /tmp/truncate9 & 51 pids="$pids $!" 52done 53for i in $pids; do 54 wait $i 55done 56while pkill swap; do :; done 57wait 58cd $odir 59 60umount $mntpoint 61mdconfig -d -u $mdstart 62rm /tmp/truncate9 63exit $s 64EOF 65#include <sys/mman.h> 66 67#include <err.h> 68#include <fcntl.h> 69#include <stdio.h> 70#include <stdlib.h> 71#include <string.h> 72#include <time.h> 73#include <unistd.h> 74 75int 76main (void) 77{ 78 off_t opos, pos; 79 time_t start; 80 int fd, i; 81 char file[80], *cp; 82 83 snprintf(file, sizeof(file), "file.%d", getpid()); 84 start = time(NULL); 85 if ((fd = open(file, O_RDWR | O_TRUNC | O_CREAT, 0644)) == -1) 86 err(1, "open(%s)", file); 87 close(fd); 88 while (time(NULL) - start < 120) { 89 if ((fd = open(file, O_RDWR)) == -1) 90 err(1, "open(%s)", file); 91 pos = arc4random(); 92 opos = pos = (pos << 12) | arc4random(); 93 if (ftruncate(fd, pos) == -1) 94 err(1, "ftruncate()"); 95 if ((cp = mmap(NULL, pos, PROT_READ | PROT_WRITE, 96 MAP_ANON | MAP_SHARED, -1, 0)) == MAP_FAILED) 97 err(1, "mmap"); 98 cp[0] = 1; 99 cp[pos - 1] = 2; 100 for (i = 0; i < 10; i++) { 101 while (pos >= opos) { 102 pos = arc4random(); 103 pos = (pos << 12) | arc4random(); 104 } 105 if (ftruncate(fd, pos) == -1) 106 err(1, "ftruncate()"); 107 cp[0] = 1; 108 cp[pos - 1] = 2; 109 } 110 111 if (munmap(cp, opos) == -1) 112 err(1, "munmap"); 113 close(fd); 114 } 115 unlink(file); 116 117 return (0); 118} 119