1#!/bin/sh 2 3# 4# SPDX-License-Identifier: BSD-2-Clause-FreeBSD 5# 6# Copyright (c) 2019 Dell EMC Isilon 7# 8# Redistribution and use in source and binary forms, with or without 9# modification, are permitted provided that the following conditions 10# are met: 11# 1. Redistributions of source code must retain the above copyright 12# notice, this list of conditions and the following disclaimer. 13# 2. Redistributions in binary form must reproduce the above copyright 14# notice, this list of conditions and the following disclaimer in the 15# documentation and/or other materials provided with the distribution. 16# 17# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27# SUCH DAMAGE. 28# 29 30# mmap(2) should fail with "Invalid argument" on i386 31# Fixed by r348843 32 33. ../default.cfg 34[ `id -u` -ne 0 ] && echo "Must be root!" && exit 1 35[ "`uname -p`" = "i386" ] || exit 0 36 37dir=/tmp 38odir=`pwd` 39cd $dir 40sed '1,/^EOF/d' < $odir/$0 > $dir/mmap35.c 41mycc -o mmap35 -Wall -Wextra -O0 -g mmap35.c || exit 1 42cd $odir 43 44set -e 45mount | grep "on $mntpoint " | grep -q /dev/md && umount -f $mntpoint 46[ -c /dev/md$mdstart ] && mdconfig -d -u $mdstart 47mdconfig -a -t swap -s 4g -u $mdstart 48newfs $newfs_flags -n md$mdstart > /dev/null 49mount /dev/md$mdstart $mntpoint 50set +e 51 52cd $mntpoint 53echo "Expect: mmap35: mmap: Cannot allocate memory" 54$dir/mmap35 55s=$? 56[ -f mmap35.core ] && 57 { ls -l mmap35.core; mv mmap35.core $dir; s=1; } 58cd $odir 59 60for i in `jot 6`; do 61 mount | grep -q "on $mntpoint " || break 62 umount $mntpoint && break || sleep 10 63 [ $i -eq 6 ] && 64 { echo FATAL; fstat -mf $mntpoint; exit 1; } 65done 66mdconfig -d -u $mdstart 67rm -f $dir/mmap35 68[ $s -eq 0 ] && rm -f mmap35.c 69exit $s 70 71EOF 72#include <sys/param.h> 73#include <sys/mman.h> 74#include <sys/stat.h> 75#include <sys/wait.h> 76 77#include <err.h> 78#include <errno.h> 79#include <fcntl.h> 80#include <stdio.h> 81#include <stdlib.h> 82#include <unistd.h> 83 84#define SIZ 0xfffff0fcULL 85 86int 87main(void) 88{ 89 off_t offset; 90 int fd; 91 char *c, file[80]; 92 93 snprintf(file, sizeof(file), "file.%d", getpid()); 94 if ((fd = open(file, O_RDWR | O_CREAT, DEFFILEMODE)) == -1) 95 err(1, "open(%s)", file); 96 97 offset = SIZ; 98 if (ftruncate(fd, offset) == -1) 99 err(1, "ftruncate(%jd)", offset); 100 write(fd, "b", 1); 101 102 c = mmap(NULL, offset, PROT_READ | PROT_WRITE, MAP_SHARED, 103 fd, 0); 104 if (c == MAP_FAILED) 105 warn("mmap"); 106 else 107 c[offset / 2] = 1; 108 109 unlink(file); 110 111 return (0); 112} 113