1#!/bin/sh 2 3# 4# Copyright (c) 2012 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# After a few runs this will happen: 32# $ umount /mnt 33# umount: unmount of /mnt failed: Device busy 34# $ umount -f /mnt 35# $ 36 37. ../default.cfg 38 39here=`pwd` 40cd /tmp 41sed '1,/^EOF/d' < $here/$0 > rename7.c 42mycc -o rename7 -Wall -Wextra -O2 rename7.c || exit 43rm -f rename7.c 44cd $here 45 46mount | grep $mntpoint | grep -q /dev/md && umount -f $mntpoint 47mdconfig -l | grep -q md$mdstart && mdconfig -d -u $mdstart 48mdconfig -a -t swap -s 2g -u $mdstart 49bsdlabel -w md$mdstart auto 50newfs $newfs_flags md${mdstart}$part > /dev/null 51mount /dev/md${mdstart}$part $mntpoint 52chmod 777 $mntpoint 53 54su $testuser -c "cd $mntpoint; /tmp/rename7 || echo FAIL" 55 56for i in `jot 10`; do 57 mount | grep -q md${mdstart}$part && \ 58 umount $mntpoint && mdconfig -d -u $mdstart && break 59done 60if mount | grep -q md${mdstart}$part; then 61 echo "Test failed" 62 exit 1 63fi 64rm -f /tmp/rename7 65exit 0 66EOF 67#include <err.h> 68#include <errno.h> 69#include <fcntl.h> 70#include <sched.h> 71#include <signal.h> 72#include <stdio.h> 73#include <stdlib.h> 74#include <strings.h> 75#include <sys/param.h> 76#include <sys/stat.h> 77#include <sys/time.h> 78#include <sys/wait.h> 79#include <time.h> 80#include <unistd.h> 81 82const char *logfile = "test.log"; 83pid_t wpid, spid; 84 85void 86r1(void) 87{ 88 int i; 89 struct stat sb1, sb2; 90 91 for (i = 0; i < 800000; i++) { 92 rename(logfile, "r1"); 93 if (stat("r1", &sb1) == 0 && stat("r2", &sb2) == 0 && 94 bcmp(&sb1, &sb2, sizeof(sb1)) == 0) { 95 fprintf(stderr, "r1 and r2 are identical after rename(%s, \"r1\")\n", logfile); 96 system("ls -ail"); 97 _exit(1); 98 } 99 } 100 _exit(0); 101} 102 103void 104r2(void) 105{ 106 int i; 107 struct stat sb1, sb2; 108 109// _exit(0); /* No problems with only r1 running */ 110 for (i = 0; i < 800000; i++) { 111 rename(logfile, "r2"); 112 if (stat("r1", &sb1) == 0 && stat("r2", &sb2) == 0 && 113 bcmp(&sb1, &sb2, sizeof(sb1)) == 0) { 114 usleep(10000); 115 fprintf(stderr, "r1 and r2 are identical after rename(%s, \"r2\")\n", logfile); 116 system("ls -ail"); 117 _exit(1); 118 } 119 } 120 _exit(0); 121} 122int 123main(void) 124{ 125 pid_t wpid, spid; 126 int e, fd, i, status; 127 128 if ((wpid = fork()) == 0) 129 r1(); 130 if ((spid = fork()) == 0) 131 r2(); 132 133 setproctitle("main"); 134 e = 0; 135 136 for (i = 0; i < 800000; i++) { 137 if ((fd = open(logfile, O_RDWR | O_CREAT | O_TRUNC, 0644)) == -1) 138 warn("creat(%s)", logfile); 139 close(fd); 140 } 141 142 kill(wpid, SIGINT); 143 kill(spid, SIGINT); 144 wait(&status); 145 e += WEXITSTATUS(status); 146 wait(&status); 147 e += WEXITSTATUS(status); 148 149 return (e); 150} 151