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 43 44newfs $newfs_flags md$mdstart > /dev/null 45mount /dev/md$mdstart $mntpoint 46 47cd $mntpoint 48for i in `jot 3`; do 49 $here/../testcases/swap/swap -t 10m -i 200 > /dev/null & 50 /tmp/lockf3 || break 51 pkill swap 52 wait 53done 54while pgrep -q swap; do 55 pkill swap 56done 57pkill lockf3 58wait 59cd $here 60 61while mount | grep -q "on $mntpoint "; do 62 umount $mntpoint || sleep 1 63done 64rm -rf /tmp/lockf3 65exit 0 66EOF 67#include <err.h> 68#include <errno.h> 69#include <fcntl.h> 70#include <signal.h> 71#include <stdio.h> 72#include <stdlib.h> 73#include <string.h> 74#include <sys/types.h> 75#include <sys/wait.h> 76#include <unistd.h> 77 78#define LOOPS 10000 79#define PIDS 100 80 81void 82handler(int s __unused) 83{ 84} 85 86void 87int_handler(int s __unused) 88{ 89 _exit(0); 90} 91 92void 93ahandler(int s __unused) 94{ 95 fprintf(stderr, "FAIL timed out\n"); 96 _exit(1); 97} 98 99int 100main(void) 101{ 102 int fd, i, j; 103 char name[128]; 104 pid_t pid[PIDS]; 105 struct sigaction sa; 106 int status; 107 108 signal(SIGALRM, ahandler); 109 alarm(15 * 60); 110 for (i = 0; i < PIDS; i++) { 111 sprintf(name, "lock.%06d", getpid()); 112 if ((fd = open(name, O_CREAT | O_TRUNC | O_RDWR, 0640)) == -1) 113 err(1, "open(%s)", name); 114 if (lockf(fd, F_LOCK, 0) == -1) 115 err(1, "flock 1"); 116 117 if ((pid[i] = fork()) == -1) 118 err(1, "fork"); 119 120 if (pid[i] == 0) { 121 memset(&sa, 0, sizeof(sa)); 122 sa.sa_handler = handler; 123 if (sigaction(SIGHUP, &sa, NULL) == -1) 124 err(1, "signal"); 125 sa.sa_handler = int_handler; 126 if (sigaction(SIGINT, &sa, NULL) == -1) 127 err(1, "signal"); 128 129 for (;;) { 130 if (lockf(fd, F_LOCK, 0) == -1) 131 if (errno != EINTR) 132 warn("lockf"); 133 } 134 _exit(0); 135 } 136 unlink(name); 137 } 138 139 usleep(10000); 140 141 for (i = 0; i < LOOPS; i++) { 142 for (j = 0; j < PIDS; j++) { 143 if (kill(pid[j], SIGHUP) == -1) { 144 warn("kill(%d), i = %d, j = %d", pid[j], i, j); 145 pid[j] = 0; 146 } 147 } 148 } 149 for (j = 0; j < PIDS; j++) { 150 if (kill(pid[j], SIGINT) == -1) { 151 warn("kill(%d), i = %d, j = %d", pid[j], i, j); 152 pid[j] = 0; 153 } 154 } 155 156 for (j = 0; j < PIDS; j++) { 157 if (waitpid(pid[j], &status, 0) == -1) 158 err(1, "waitpid(%d)", pid[j]); 159 } 160 161 return (0); 162} 163