1#!/bin/sh 2 3# 4# Copyright (c) 2014 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# Simple O_EXLOCK test scenario. 32 33. ../default.cfg 34 35here=`pwd` 36cd /tmp 37sed '1,/^EOF/d' < $here/$0 > exlock.c 38mycc -o exlock -Wall -Wextra exlock.c || exit 1 39rm -f exlock.c 40cd $here 41 42mount | grep $mntpoint | grep -q /dev/md && umount -f $mntpoint 43mdconfig -l | grep -q md$mdstart && mdconfig -d -u $mdstart 44 45mdconfig -a -t swap -s 2g -u $mdstart || exit 1 46bsdlabel -w md$mdstart auto 47newfs $newfs_flags md${mdstart}$part > /dev/null 48mount /dev/md${mdstart}$part $mntpoint 49chmod 777 $mntpoint 50 51su $testuser -c "cd $mntpoint; /tmp/exlock" 52 53while mount | grep $mntpoint | grep -q /dev/md; do 54 umount $mntpoint || sleep 1 55done 56mdconfig -d -u $mdstart 57rm -f /tmp/exlock 58exit 59EOF 60#include <sys/types.h> 61#include <sys/wait.h> 62 63#include <err.h> 64#include <fcntl.h> 65#include <stdio.h> 66#include <unistd.h> 67 68char buf[128]; 69 70#define PARALLEL 3 71 72static void 73tst(char *file, int n) 74{ 75 int fd, i; 76 77 for (i = 0; i < (int)sizeof(buf); i++) 78 buf[i] = '0' + n; 79 80 for (i = 0; i < 1024 * 1024; i++) { 81 if ((fd = open(file, O_RDWR | O_CREAT | O_APPEND | O_EXLOCK, 82 0644)) == -1) 83 err(1, "open(%s)", file); 84 if (write(fd, buf, sizeof(buf)) != sizeof(buf)) 85 err(1, "write"); 86 close(fd); 87 } 88 89 _exit(0); 90} 91static void 92test(void) 93{ 94 int i; 95 char file[80]; 96 97 snprintf(file, sizeof(file), "f06%d", getpid()); 98 99 for (i = 0; i < 3; i++) 100 if (fork() == 0) 101 tst(file, i); 102 for (i = 0; i < 3; i++) 103 wait(NULL); 104 105 unlink(file); 106 107 _exit(0); 108} 109 110int 111main(void) 112{ 113 int i; 114 115 for (i = 0; i < PARALLEL; i++) 116 if (fork() == 0) 117 test(); 118 for (i = 0; i < PARALLEL; i++) 119 wait(NULL); 120 121 return (0); 122} 123