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# Test that fails on various non FreeBSD file systems. 32# 3.13.0-74-generic #118-Ubuntu SMP: Mismatch @ count 214, 0 != 123 33# OK on OS X (Darwin Kernel Version 15.5.0) 34 35# Scanario by: Michael Ubell ubell mindspring com. 36 37. ../default.cfg 38 39mount | grep $mntpoint | grep -q /dev/md && umount -f $mntpoint 40mdconfig -l | grep -q md$mdstart && mdconfig -d -u $mdstart 41 42sed '1,/^EOF/d' < $0 > /tmp/overlap.c 43mycc -o /tmp/overlap -Wall -Wextra -O2 /tmp/overlap.c -lpthread || exit 1 44rm -f /tmp/overlap.c 45 46size="1g" 47mdconfig -a -t swap -s $size -u $mdstart || exit 1 48bsdlabel -w md$mdstart auto 49 50newfs -U md${mdstart}$part > /dev/null 51 52mount /dev/md${mdstart}$part $mntpoint 53chmod 777 $mntpoint 54 55(cd $mntpoint; /tmp/overlap) 56s=$? 57 58while mount | grep $mntpoint | grep -q /dev/md; do 59 umount $mntpoint || sleep 1 60done 61mdconfig -d -u $mdstart 62rm -f /tmp/overlap 63exit $s 64EOF 65#include <err.h> 66#include <fcntl.h> 67#include <pthread.h> 68#include <signal.h> 69#include <stdio.h> 70#include <stdlib.h> 71#include <sys/types.h> 72#include <sys/uio.h> 73#include <unistd.h> 74 75char file[128]; 76int bsiz, siz; 77 78void 79handler(int s __unused) 80{ 81 _exit(0); 82} 83 84void * 85writer(void *arg __unused) { 86 int fdes, count; 87 ssize_t nwrite; 88 int *buf; 89 90 if ((fdes = open(file, O_RDWR|O_CREAT, 0664)) == -1) 91 err(1, "open(%s)", file); 92 93 count = 0; 94 buf = malloc(bsiz * sizeof(int)); 95 buf[0] = buf[bsiz - 1] = 0; 96 while ((nwrite = pwrite(fdes, buf, siz, 0)) != -1) { 97 if (nwrite < siz) 98 err(1, "pwrite @ count %d, nwrite %zd", count, nwrite); 99 buf[0] = ++buf[bsiz - 1]; 100 count++; 101 } 102 103 err(1, "pwrite()"); 104} 105 106void * 107reader(void *arg __unused) { 108 int fdes, count; 109 ssize_t nread; 110 int *buf; 111 112 if ((fdes = open(file, O_RDWR|O_CREAT, 0664)) == -1) 113 err(1, "open(%s)", file); 114 count = 0; 115 116 buf = malloc(bsiz * sizeof(int)); 117 while ((nread = pread(fdes, buf, siz, 0)) == 0) 118 continue; 119 120 do { 121 if (nread < siz) 122 err(1, "pread @ count %d, nread %zd", count, nread); 123 if (buf[0] != buf[bsiz - 1]) { 124 printf("Mismatch @ count %d, %d != %d\n", 125 count, buf[0], buf[bsiz - 1]); 126 abort(); 127 } 128 count++; 129 } while ((nread = pread(fdes, buf, siz, 0)) != -1); 130 131 err(1, "pread()"); 132} 133 134int 135main(int argc, char **argv) { 136 pthread_t rp, wp; 137 int ret; 138 void *exitstatus; 139 140 snprintf(file, sizeof(file), "test.%0d5", getpid()); 141 siz = 65536; 142 if (argc == 2) 143 siz = atoi(argv[1]); 144 145 bsiz = siz / sizeof(int); 146 147 signal(SIGALRM, handler); 148 alarm(300); 149 150 if ((ret = pthread_create(&wp, NULL, writer, NULL)) != 0) 151 errc(1, ret, "pthread_create"); 152 if ((ret = pthread_create(&rp, NULL, reader, NULL)) != 0) 153 errc(1, ret, "pthread_create"); 154 155 pthread_join(rp, &exitstatus); 156 pthread_join(wp, &exitstatus); 157 158 unlink(file); 159 return (0); 160} 161