1#!/bin/sh 2 3# 4# SPDX-License-Identifier: BSD-2-Clause-FreeBSD 5# 6# Copyright (c) 2018 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# O_RESOLVE_BENEATH test with a relative path, which is a symbolic link pointing 31# to an absolute path. 32 33# "panic: Assertion (ndp->ni_lcf & NI_LCF_LATCH) != 0 failed at 34# ../../../kern/vfs_lookup.c:182" seen. Fixed by r340343. 35 36# Based on scenario by Vladimir Kondratyev <vladimir kondratyev su> 37 38. ../default.cfg 39[ `id -u` -ne 0 ] && echo "Must be root!" && exit 1 40 41dir=/tmp 42odir=`pwd` 43cd $dir 44sed '1,/^EOF/d' < $odir/$0 > $dir/beneath2.c 45mycc -o beneath2 -Wall -Wextra -O0 -g beneath2.c || exit 1 46rm -f beneath2.c 47cd $odir 48 49set -e 50mount | grep "on $mntpoint " | grep -q /dev/md && umount -f $mntpoint 51[ -c /dev/md$mdstart ] && mdconfig -d -u $mdstart 52mdconfig -a -t swap -s 1g -u $mdstart 53newfs $newfs_flags md$mdstart > /dev/null 54mount /dev/md$mdstart $mntpoint 55set +e 56 57cd $mntpoint 58ln -s /tmp/justalongname symlink 59$dir/beneath2 symlink 60s=$? 61[ -f beneath2.core -a $s -eq 0 ] && 62 { ls -l beneath2.core; mv beneath2.core $dir; s=1; } 63cd $odir 64 65for i in `jot 6`; do 66 mount | grep -q "on $mntpoint " || break 67 umount $mntpoint && break || sleep 10 68 [ $i -eq 6 ] && 69 { echo FATAL; fstat -mf $mntpoint; exit 1; } 70done 71mdconfig -d -u $mdstart 72rm -rf $dir/beneath2 73exit $s 74 75EOF 76#include <sys/types.h> 77 78#include <err.h> 79#include <errno.h> 80#include <fcntl.h> 81#include <stdio.h> 82#include <stdlib.h> 83 84int 85main(int argc, char *argv[]) 86{ 87 int fd; 88 char *file; 89 90 if (argc != 2) { 91 fprintf(stderr, "Usage: %s <file>", argv[0]); 92 exit(1); 93 } 94 file = argv[1]; 95 if ((fd = open(file, O_RDONLY | O_RESOLVE_BENEATH)) != 0 && 96 errno != ENOTCAPABLE) 97 err(1, "open(%s)", file); 98 99 return (0); 100} 101