1#!/bin/sh 2 3# 4# Copyright (c) 2013 EMC Corp. 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# Regression test for rename(2) problem with missing reference release of 32# a busy "to" vnode, resulting in a leak. 33# Fixed in r253998. 34 35. ../default.cfg 36 37here=`pwd` 38cd /tmp 39sed '1,/^EOF/d' < $here/$0 > rename10.c 40mycc -o rename10 -Wall -Wextra -g -O2 rename10.c || exit 1 41rm -f rename10.c 42cd $here 43 44mount | grep "on $mntpoint " | grep -q /dev/md && umount -f $mntpoint 45mdconfig -l | grep -q md$mdstart && mdconfig -d -u $mdstart 46 47mdconfig -a -t swap -s 4g -u $mdstart || exit 1 48bsdlabel -w md$mdstart auto 49newfs $newfs_flags md${mdstart}$part > /dev/null 50mount /dev/md${mdstart}$part $mntpoint 51avail=`df -k $mntpoint | tail -1 | awk '{print $4}'` 52 53cd $mntpoint 54/tmp/rename10; s=$? 55cd $here 56 57for i in `jot 3`; do 58 sync 59 sleep 2 60done 61 62if [ `df -k $mntpoint | tail -1 | awk '{print $4}'` -lt $avail ]; then 63 echo FAIL 64 ls -ial $mntpoint 65 df -i $mntpoint 66fi 67 68n=0 69while mount | grep "on $mntpoint " | grep -q /dev/md; do 70 umount $mntpoint || sleep 1 71 n=$((n + 1)) 72 [ $n -gt 5 ] && { umount -f $mntpoint; break; } 73done 74 75checkfs /dev/md${mdstart}$part || s=$? 76rm -f /tmp/rename10 77mdconfig -d -u $mdstart 78exit $s 79EOF 80#include <err.h> 81#include <fcntl.h> 82#include <pthread.h> 83#include <signal.h> 84#include <stdio.h> 85#include <stdlib.h> 86#include <sys/stat.h> 87#include <sys/types.h> 88#include <sys/wait.h> 89#include <unistd.h> 90 91#define PARALLEL 4 92#define SIZE (1 * 1024 * 1024) 93 94static char *logfile = "logfile"; 95static char *oldfiles[] = { 96 "logfile.0", "logfile.1", "logfile.2", "logfile.3", "logfile.4" 97}; 98 99void * 100logger(void) 101{ 102 int fd; 103 char * cp; 104 105 setproctitle("logger"); 106 cp = calloc(1, SIZE); 107 for(;;) { 108 if ((fd = open(logfile, O_RDWR | O_APPEND)) != -1) { 109 if (write(fd, cp, SIZE) != SIZE) 110 err(1, "write()"); 111 close(fd); 112 } 113 usleep(1); 114 } 115 116 _exit(0); 117} 118 119void * 120spin(void) 121{ 122 int fd, i; 123 124 setproctitle("spin"); 125 for(;;) { 126 for (i = 0; i < 5; i++) { 127 if ((fd = open(oldfiles[i], O_RDWR | O_APPEND)) != -1) 128 close(fd); 129 } 130 usleep(1); 131 } 132 _exit(0); 133} 134 135void 136renamer() 137{ 138 int fd, i; 139 time_t start; 140 141 setproctitle("renamer"); 142 start = time(NULL); 143 i = 0; 144 while (time(NULL) - start < 60) { 145 if ((fd = open(logfile, O_RDWR | O_CREAT | O_EXCL, 0644)) == -1) 146 err(1, "creat(%s)", logfile); 147 close(fd); 148 if (rename(logfile, oldfiles[i]) == -1) 149 err(1, "rename(%s, %s)", logfile, oldfiles[i]); 150 i = (i + 1) % 5; 151 } 152 for (i = 0; i < 5; i++) { 153 unlink(oldfiles[i]); 154 } 155 unlink(logfile); 156 157} 158 159int 160main() { 161 pid_t pids[PARALLEL], spids[PARALLEL]; 162 int i; 163 164 for (i = 0; i < PARALLEL; i++) { 165 if ((pids[i] = fork()) == 0) 166 logger(); 167 if ((spids[i] = fork()) == 0) 168 spin(); 169 } 170 171 renamer(); 172 173 for (i = 0; i < PARALLEL; i++) { 174 if (kill(pids[i], SIGINT) == -1) 175 err(1, "kill(%d)", pids[i]); 176 if (kill(spids[i], SIGINT) == -1) 177 err(1, "kill(%d)", spids[i]); 178 } 179 for (i = 0; i < PARALLEL * 2; i++) 180 wait(NULL); 181 wait(NULL); 182 183 return (0); 184} 185