#!/bin/sh # # SPDX-License-Identifier: BSD-2-Clause-FreeBSD # # Copyright (c) 2021 Peter Holm <pho@FreeBSD.org> # # Redistribution and use in source and binary forms, with or without # modification, are permitted provided that the following conditions # are met: # 1. Redistributions of source code must retain the above copyright # notice, this list of conditions and the following disclaimer. # 2. Redistributions in binary form must reproduce the above copyright # notice, this list of conditions and the following disclaimer in the # documentation and/or other materials provided with the distribution. # # THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND # ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE # ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE # FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL # DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS # OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) # HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY # OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF # SUCH DAMAGE. # # Bug 248184 - readlink("/proc/curproc/file") returns arbitrary correct name for programs with more than one link (name) # Test scenario for D32611 "exec: provide right hardlink name in AT_EXECPATH" . ../default.cfg [ `id -u` -ne 0 ] && echo "Must be root!" && exit 1 dir=/tmp odir=`pwd` cd $dir sed '1,/^EOF/d' < $odir/$0 > $dir/execpath.c mycc -o execpath -Wall -Wextra -O0 -g execpath.c || exit 1 rm -f execpath.c cd $odir set -e mount | grep "on $mntpoint " | grep -q /dev/md && umount -f $mntpoint [ -c /dev/md$mdstart ] && mdconfig -d -u $mdstart mdconfig -a -t swap -s 2g -u $mdstart bsdlabel -w md$mdstart auto newfs $newfs_flags md${mdstart}$part > /dev/null mount /dev/md${mdstart}$part $mntpoint set +e cd $mntpoint mkdir d1 d2 cp /bin/sleep . ln sleep d1/sleep ln sleep d2/sleep s=0 for p in $mntpoint/sleep $mntpoint/d1/sleep $mntpoint/d2/sleep; do (cd `dirname $p`; ./`basename $p` 10) & /bin/sleep .2 path=`procstat binary $! | awk "/$!/ {print \\$NF}"` kill $! wait [ "$path" != "$p" ] && { s=1; echo "fail path=$path : prog=$p"; } done mv /tmp/execpath d1 ln d1/execpath d2/execpath r=`./d1/execpath` echo $r | grep -q "/d1/" || { s=1; echo "fail: $r. Expected d1 @ 1"; } r=`./d2/execpath` echo $r | grep -q "/d2/" || { s=1; echo "fail: $r. Expected d2 @ 2"; } r=`(cd d1; ./execpath)` echo $r | grep -q "/d1/" || { s=1; echo "fail: $r. Expected d1 @ 3"; } r=`(cd d2; ./execpath)` echo $r | grep -q "/d2/" || { s=1; echo "fail: $r. Expected d2 @ 4"; } cd $odir for i in `jot 6`; do mount | grep -q "on $mntpoint " || break umount $mntpoint && break || sleep 10 [ $i -eq 6 ] && { echo FATAL; fstat -mf $mntpoint; exit 1; } done mdconfig -d -u $mdstart exit $s EOF /* Test scenario by Tobias Kortkamp <tobik@freebsd.org> */ #include <sys/auxv.h> #include <limits.h> #include <stdio.h> int main(void) { char pathname[PATH_MAX]; elf_aux_info(AT_EXECPATH, pathname, PATH_MAX); puts(pathname); return 0; }