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 46newfs $newfs_flags md$mdstart > /dev/null 47mount /dev/md$mdstart $mntpoint 48chmod 777 $mntpoint 49 50su $testuser -c "cd $mntpoint; /tmp/exlock" 51 52while mount | grep $mntpoint | grep -q /dev/md; do 53 umount $mntpoint || sleep 1 54done 55mdconfig -d -u $mdstart 56rm -f /tmp/exlock 57exit 58EOF 59#include <sys/types.h> 60#include <sys/wait.h> 61 62#include <err.h> 63#include <fcntl.h> 64#include <stdio.h> 65#include <unistd.h> 66 67char buf[128]; 68 69#define PARALLEL 3 70 71static void 72tst(char *file, int n) 73{ 74 int fd, i; 75 76 for (i = 0; i < (int)sizeof(buf); i++) 77 buf[i] = '0' + n; 78 79 for (i = 0; i < 1024 * 1024; i++) { 80 if ((fd = open(file, O_RDWR | O_CREAT | O_APPEND | O_EXLOCK, 81 0644)) == -1) 82 err(1, "open(%s)", file); 83 if (write(fd, buf, sizeof(buf)) != sizeof(buf)) 84 err(1, "write"); 85 close(fd); 86 } 87 88 _exit(0); 89} 90static void 91test(void) 92{ 93 int i; 94 char file[80]; 95 96 snprintf(file, sizeof(file), "f06%d", getpid()); 97 98 for (i = 0; i < 3; i++) 99 if (fork() == 0) 100 tst(file, i); 101 for (i = 0; i < 3; i++) 102 wait(NULL); 103 104 unlink(file); 105 106 _exit(0); 107} 108 109int 110main(void) 111{ 112 int i; 113 114 for (i = 0; i < PARALLEL; i++) 115 if (fork() == 0) 116 test(); 117 for (i = 0; i < PARALLEL; i++) 118 wait(NULL); 119 120 return (0); 121} 122