1#!/bin/sh 2 3# 4# SPDX-License-Identifier: BSD-2-Clause-FreeBSD 5# 6# Copyright (c) 2021 Peter Holm <pho@FreeBSD.org> 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# Bug 248184 - readlink("/proc/curproc/file") returns arbitrary correct name for programs with more than one link (name) 31# Test scenario for D32611 "exec: provide right hardlink name in AT_EXECPATH" 32 33. ../default.cfg 34[ `id -u` -ne 0 ] && echo "Must be root!" && exit 1 35 36dir=/tmp 37odir=`pwd` 38cd $dir 39sed '1,/^EOF/d' < $odir/$0 > $dir/execpath.c 40mycc -o execpath -Wall -Wextra -O0 -g execpath.c || exit 1 41rm -f execpath.c 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 2g -u $mdstart 48newfs $newfs_flags md$mdstart > /dev/null 49mount /dev/md$mdstart $mntpoint 50set +e 51 52cd $mntpoint 53mkdir d1 d2 54cp /bin/sleep . 55ln sleep d1/sleep 56ln sleep d2/sleep 57s=0 58for p in $mntpoint/sleep $mntpoint/d1/sleep $mntpoint/d2/sleep; do 59 (cd `dirname $p`; ./`basename $p` 10) & 60 /bin/sleep .2 61 path=`procstat binary $! | awk "/$!/ {print \\$NF}"` 62 kill $! 63 wait 64 [ "$path" != "$p" ] && { s=1; echo "fail path=$path : prog=$p"; } 65done 66mv /tmp/execpath d1 67ln d1/execpath d2/execpath 68 69r=`./d1/execpath` 70echo $r | grep -q "/d1/" || { s=1; echo "fail: $r. Expected d1 @ 1"; } 71r=`./d2/execpath` 72echo $r | grep -q "/d2/" || { s=1; echo "fail: $r. Expected d2 @ 2"; } 73r=`(cd d1; ./execpath)` 74echo $r | grep -q "/d1/" || { s=1; echo "fail: $r. Expected d1 @ 3"; } 75r=`(cd d2; ./execpath)` 76echo $r | grep -q "/d2/" || { s=1; echo "fail: $r. Expected d2 @ 4"; } 77 78cd $odir 79 80for i in `jot 6`; do 81 mount | grep -q "on $mntpoint " || break 82 umount $mntpoint && break || sleep 10 83 [ $i -eq 6 ] && 84 { echo FATAL; fstat -mf $mntpoint; exit 1; } 85done 86mdconfig -d -u $mdstart 87exit $s 88 89EOF 90/* Test scenario by Tobias Kortkamp <tobik@freebsd.org> */ 91 92#include <sys/auxv.h> 93#include <limits.h> 94#include <stdio.h> 95 96int 97main(void) 98{ 99 char pathname[PATH_MAX]; 100 101 elf_aux_info(AT_EXECPATH, pathname, PATH_MAX); 102 puts(pathname); 103 return 0; 104} 105