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. ../default.cfg 32 33here=`pwd` 34cd /tmp 35sed '1,/^EOF/d' < $here/$0 > lockf3.c 36mycc -o lockf3 -Wall -Wextra -O2 lockf3.c || exit 1 37rm -f lockf3.c 38 39mount | grep -q "$mntpoint" && umount $mntpoint 40mdconfig -l | grep -q $mdstart && mdconfig -d -u $mdstart 41 42mdconfig -a -t swap -s 40m -u $mdstart 43bsdlabel -w md$mdstart auto 44 45newfs $newfs_flags md${mdstart}$part > /dev/null 46mount /dev/md${mdstart}$part $mntpoint 47 48cd $mntpoint 49for i in `jot 3`; do 50 $here/../testcases/swap/swap -t 10m -i 200 > /dev/null & 51 /tmp/lockf3 || break 52 pkill swap 53 wait 54done 55while pgrep -q swap; do 56 pkill swap 57done 58pkill lockf3 59wait 60cd $here 61 62while mount | grep -q "on $mntpoint "; do 63 umount $mntpoint || sleep 1 64done 65rm -rf /tmp/lockf3 66exit 0 67EOF 68#include <err.h> 69#include <errno.h> 70#include <fcntl.h> 71#include <signal.h> 72#include <stdio.h> 73#include <stdlib.h> 74#include <string.h> 75#include <sys/types.h> 76#include <sys/wait.h> 77#include <unistd.h> 78 79#define LOOPS 10000 80#define PIDS 100 81 82void 83handler(int s __unused) 84{ 85} 86 87void 88int_handler(int s __unused) 89{ 90 _exit(0); 91} 92 93void 94ahandler(int s __unused) 95{ 96 fprintf(stderr, "FAIL timed out\n"); 97 _exit(1); 98} 99 100int 101main(void) 102{ 103 int fd, i, j; 104 char name[128]; 105 pid_t pid[PIDS]; 106 struct sigaction sa; 107 int status; 108 109 signal(SIGALRM, ahandler); 110 alarm(15 * 60); 111 for (i = 0; i < PIDS; i++) { 112 sprintf(name, "lock.%06d", getpid()); 113 if ((fd = open(name, O_CREAT | O_TRUNC | O_RDWR, 0640)) == -1) 114 err(1, "open(%s)", name); 115 if (lockf(fd, F_LOCK, 0) == -1) 116 err(1, "flock 1"); 117 118 if ((pid[i] = fork()) == -1) 119 err(1, "fork"); 120 121 if (pid[i] == 0) { 122 memset(&sa, 0, sizeof(sa)); 123 sa.sa_handler = handler; 124 if (sigaction(SIGHUP, &sa, NULL) == -1) 125 err(1, "signal"); 126 sa.sa_handler = int_handler; 127 if (sigaction(SIGINT, &sa, NULL) == -1) 128 err(1, "signal"); 129 130 for (;;) { 131 if (lockf(fd, F_LOCK, 0) == -1) 132 if (errno != EINTR) 133 warn("lockf"); 134 } 135 _exit(0); 136 } 137 unlink(name); 138 } 139 140 usleep(10000); 141 142 for (i = 0; i < LOOPS; i++) { 143 for (j = 0; j < PIDS; j++) { 144 if (kill(pid[j], SIGHUP) == -1) { 145 warn("kill(%d), i = %d, j = %d", pid[j], i, j); 146 pid[j] = 0; 147 } 148 } 149 } 150 for (j = 0; j < PIDS; j++) { 151 if (kill(pid[j], SIGINT) == -1) { 152 warn("kill(%d), i = %d, j = %d", pid[j], i, j); 153 pid[j] = 0; 154 } 155 } 156 157 for (j = 0; j < PIDS; j++) { 158 if (waitpid(pid[j], &status, 0) == -1) 159 err(1, "waitpid(%d)", pid[j]); 160 } 161 162 return (0); 163} 164