1#!/bin/sh 2 3# 4# Copyright (c) 2011 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[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1 30 31# Variation of linger.sh, with emphasis on blocks. 32 33. ../default.cfg 34 35here=`pwd` 36cd /tmp 37sed '1,/^EOF/d' < $here/$0 > linger2.c 38mycc -o linger2 -Wall -O2 linger2.c 39rm -f linger2.c 40cd $here 41 42mount | grep $mntpoint | grep -q /dev/md && umount -f $mntpoint 43mdconfig -l | grep -q md$mdstart && mdconfig -d -u $mdstart 44mdconfig -a -t swap -s 1g -u $mdstart 45bsdlabel -w md$mdstart auto 46[ $# -eq 1 ] && opt="$1" 47[ $# -eq 0 ] && opt=$newfs_flags # No argument == default flag 48newfs $opt -n md${mdstart}$part > /dev/null 49mount /dev/md${mdstart}$part $mntpoint 50chmod 777 $mntpoint 51set `df -i $mntpoint | tail -1 | awk '{print $3, $6}'` 52 53min=24 54[ -r $mntpoint/.sujournal ] && { size=88; min=8232; } 55if ! su $testuser -c "cd $mntpoint; /tmp/linger2 $size 2>/dev/null"; then 56 r=`df -i $mntpoint | head -1` 57 echo " $r" 58 for i in `jot 12`; do 59 r=`df -ik $mntpoint | tail -1` 60 [ "$r" != "$old" ] && echo "`date '+%T'` $r" 61 old=$r 62 [ `echo $r | awk '{print $3}'` -le $min ] && break 63 sleep 10 64 done 65fi 66 67while mount | grep "$mntpoint " | grep -q /dev/md; do 68 umount $mntpoint || sleep 1 69done 70mdconfig -d -u $mdstart 71rm -f /tmp/linger2 72exit 73EOF 74#include <err.h> 75#include <errno.h> 76#include <fcntl.h> 77#include <sched.h> 78#include <stdio.h> 79#include <stdlib.h> 80#include <string.h> 81#include <sys/param.h> 82#include <sys/stat.h> 83#include <sys/wait.h> 84#include <unistd.h> 85 86#define PARALLEL 10 87static int size = 89; 88 89int 90test(void) 91{ 92 int error = 0, fd, i, j; 93 pid_t pid; 94 char file[128]; 95 char *buf; 96 97 for (;;) { 98 if (access("rendezvous", R_OK) == 0) 99 break; 100 sched_yield(); 101 } 102 pid = getpid(); 103 buf = malloc(1024 * 1024); 104 for (j = 0; j < size; j++) { 105 sprintf(file,"p%05d.%05d", pid, j); 106 if ((fd = creat(file, 0660)) == -1) { 107 if (errno != EINTR) { 108 warn("creat(%s). %s:%d", file, __FILE__, __LINE__); 109 unlink("continue"); 110 error = 1; 111 break; 112 } 113 } 114 if (write(fd, buf, 1024 * 1024) != 1024 * 1024) { 115 warn("write()"); 116 unlink("continue"); 117 error = 1; 118 break; 119 } 120 if (fd != -1 && close(fd) == -1) 121 err(2, "close(%d)", j); 122 123 } 124 sleep(3); 125 126 if (error == 0) 127 j--; 128 for (i = j; i >= 0; i--) { 129 sprintf(file,"p%05d.%05d", pid, i); 130 if (unlink(file) == -1) 131 warn("unlink(%s)", file); 132 133 } 134 return (error); 135} 136 137int 138main(int argc, char **argv) 139{ 140 int error = 0, fd, i, j, status; 141 142 if (argc == 2) 143 size = atoi(argv[1]); 144 145 umask(0); 146 if ((fd = open("continue", O_CREAT, 0644)) == -1) 147 err(1, "open()"); 148 close(fd); 149 for (i = 0; i < 200; i++) { 150 for (j = 0; j < PARALLEL; j++) { 151 if (fork() == 0) 152 exit(test()); 153 } 154 155 if ((fd = open("rendezvous", O_CREAT, 0644)) == -1) 156 err(1, "open()"); 157 close(fd); 158 159 for (j = 0; j < PARALLEL; j++) { 160 wait(&status); 161 error += status; 162 } 163 164 unlink("rendezvous"); 165 if (access("continue", R_OK) == -1) { 166 break; 167 } 168 } 169 unlink("continue"); 170 171 return (error != 0); 172} 173