1#!/bin/sh 2 3# 4# Copyright (c) 2018 Dell EMC Isilon 5# All rights reserved. 6# 7# Redistribution and use in source and binary forms, with or without 8# modification, are permitted provided that the following conditions 9# are met: 10# 1. Redistributions of source code must retain the above copyright 11# notice, this list of conditions and the following disclaimer. 12# 2. Redistributions in binary form must reproduce the above copyright 13# notice, this list of conditions and the following disclaimer in the 14# documentation and/or other materials provided with the distribution. 15# 16# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26# SUCH DAMAGE. 27# 28 29# Testing with links longer than 120 characters, which is not stored in the 30# inode but will be placed in its own data fragment. 31 32# "panic: softdep_deallocate_dependencies: dangling deps" seen with SU: 33# https://people.freebsd.org/~pho/stress/log/symlink4.txt 34# Fixed by r327821 35 36[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1 37 38. ../default.cfg 39 40dir=/tmp 41odir=`pwd` 42cd $dir 43sed '1,/^EOF/d' < $odir/$0 > $dir/symlink4.c 44mycc -o symlink4 -Wall -Wextra -O0 -g symlink4.c || exit 1 45rm -f symlink4.c 46cd $odir 47 48set -e 49mount | grep "on $mntpoint " | grep -q /dev/md && umount -f $mntpoint 50[ -c /dev/md$mdstart ] && mdconfig -d -u $mdstart 51mdconfig -a -t swap -s 1g -u $mdstart 52bsdlabel -w md$mdstart auto 53newfs $newfs_flags md${mdstart}$part > /dev/null 54mount /dev/md${mdstart}$part $mntpoint 55set +e 56 57cd $mntpoint 58i=`df -ik $mntpoint | tail -1 | awk '{printf "%d\n", ($7 - 500)/2}'` 59/tmp/symlink4 $i 60s=$? 61[ -f symlink4.core -a $s -eq 0 ] && 62 { ls -l symlink4.core; mv symlink4.core /tmp; s=1; } 63cd $odir 64 65for i in `jot 6`; do 66 mount | grep -q "on $mntpoint " || break 67 umount $mntpoint && break || sleep 10 68done 69[ $i -eq 6 ] && exit 1 70mdconfig -d -u $mdstart 71rm -rf $dir/symlink4 72exit $s 73 74EOF 75#include <sys/types.h> 76#include <sys/mount.h> 77#include <sys/param.h> 78#include <sys/stat.h> 79#include <sys/sysctl.h> 80 81#include <unistd.h> 82#include <err.h> 83#include <errno.h> 84#include <fcntl.h> 85#include <stdio.h> 86#include <stdlib.h> 87#include <string.h> 88 89int 90main(int argc, char **argv) 91{ 92 int64_t size; 93 pid_t pid; 94 int i, j; 95 char file[128], link[256]; 96 97 if (argc != 2) 98 errx(1, "Usage: %s <links>", argv[0]); 99 size = atol(argv[1]); 100 strcpy(link, "/mnt/not/there/"); 101 for (i = 15; i < 200; i++) 102 link[i] = '1'; 103 link[++i] = 0; 104 105 pid = getpid(); 106 for (j = 0; j < size; j++) { 107 sprintf(file,"p%05d.%05d", pid, j); 108 if (symlink(link, file) == -1) { 109 if (errno != EINTR) { 110 warn("symlink(%s, %s)", link, file); 111 printf("break out at %d, errno %d\n", j, 112 errno); 113 break; 114 } 115 } 116 } 117 118 for (i = --j; i >= 0; i--) { 119 sprintf(file,"p%05d.%05d", pid, i); 120 if (unlink(file) == -1) 121 err(3, "unlink(%s)", file); 122 123 } 124 return (0); 125} 126