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" and not core dump 31# Fixed by 32 33. ../default.cfg 34 35dir=/tmp 36odir=`pwd` 37cd $dir 38sed '1,/^EOF/d' < $odir/$0 > $dir/mmap36.c 39mycc -o mmap36 -Wall -Wextra -O0 -g mmap36.c || exit 1 40 41echo "Expect: mmap36: mmap: Cannot allocate memory" 42$dir/mmap36 43s=$? 44[ -f mmap36.core ] && 45 { ls -l mmap36.core; mv mmap36.core $dir; s=1; } 46cd $odir 47[ $s -eq 0 ] && rm -f $dir/mmap36.c $dir/mmap36 48exit $s 49 50EOF 51#include <sys/param.h> 52#include <sys/mman.h> 53#include <sys/stat.h> 54#include <sys/wait.h> 55 56#include <err.h> 57#include <errno.h> 58#include <fcntl.h> 59#include <stdio.h> 60#include <stdint.h> 61#include <stdlib.h> 62#include <unistd.h> 63 64int 65main(void) 66{ 67 off_t offset; 68 char *c; 69 70 offset = SIZE_MAX - 5; 71 72 c = mmap(NULL, offset, PROT_READ | PROT_WRITE, MAP_SHARED | MAP_ANON, 73 -1, 0); 74 if (c == MAP_FAILED) 75 warn("mmap"); 76 else 77 c[offset / 2] = 1; 78 79 return (0); 80} 81