1#!/bin/sh 2 3# 4# Copyright (c) 2013 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# mlockall(2) / nullfs(5) scenario causes: 30# http://people.freebsd.org/~pho/stress/log/kostik619.txt 31# kern/182661, fixed in r256211. 32 33. ../default.cfg 34 35[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1 36 37odir=`pwd` 38cd /tmp 39sed '1,/^EOF/d' < $odir/$0 > mlockall4.c 40mycc -o mlockall4 -Wall -Wextra mlockall4.c || exit 1 41rm -f mlockall4.c 42 43mount | grep -q "on $mntpoint " && umount -f $mntpoint 44mount -t nullfs /tmp $mntpoint 45$mntpoint/mlockall4 & 46sleep 2 47umount -f $mntpoint 48 49wait 50rm -f /tmp/mlockall4 51exit 52EOF 53#include <sys/types.h> 54#include <err.h> 55#include <sys/mman.h> 56#include <unistd.h> 57 58int 59main(void) 60{ 61 if (mlockall(MCL_CURRENT | MCL_FUTURE) == -1) 62 err(1, "mlockall(MCL_CURRENT | MCL_FUTURE)"); 63 sleep(5); 64 65 return (0); 66} 67