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 52newfs $newfs_flags md$mdstart > /dev/null 53mount /dev/md$mdstart $mntpoint 54set +e 55 56cd $mntpoint 57i=`df -ik $mntpoint | tail -1 | awk '{printf "%d\n", ($7 - 500)/2}'` 58/tmp/symlink4 $i 59s=$? 60[ -f symlink4.core -a $s -eq 0 ] && 61 { ls -l symlink4.core; mv symlink4.core /tmp; s=1; } 62cd $odir 63 64for i in `jot 6`; do 65 mount | grep -q "on $mntpoint " || break 66 umount $mntpoint && break || sleep 10 67done 68[ $i -eq 6 ] && exit 1 69mdconfig -d -u $mdstart 70rm -rf $dir/symlink4 71exit $s 72 73EOF 74#include <sys/types.h> 75#include <sys/mount.h> 76#include <sys/param.h> 77#include <sys/stat.h> 78#include <sys/sysctl.h> 79 80#include <unistd.h> 81#include <err.h> 82#include <errno.h> 83#include <fcntl.h> 84#include <stdio.h> 85#include <stdlib.h> 86#include <string.h> 87 88int 89main(int argc, char **argv) 90{ 91 int64_t size; 92 pid_t pid; 93 int i, j; 94 char file[128], link[256]; 95 96 if (argc != 2) 97 errx(1, "Usage: %s <links>", argv[0]); 98 size = atol(argv[1]); 99 strcpy(link, "/mnt/not/there/"); 100 for (i = 15; i < 200; i++) 101 link[i] = '1'; 102 link[++i] = 0; 103 104 pid = getpid(); 105 for (j = 0; j < size; j++) { 106 sprintf(file,"p%05d.%05d", pid, j); 107 if (symlink(link, file) == -1) { 108 if (errno != EINTR) { 109 warn("symlink(%s, %s)", link, file); 110 printf("break out at %d, errno %d\n", j, 111 errno); 112 break; 113 } 114 } 115 } 116 117 for (i = --j; i >= 0; i--) { 118 sprintf(file,"p%05d.%05d", pid, i); 119 if (unlink(file) == -1) 120 err(3, "unlink(%s)", file); 121 122 } 123 return (0); 124} 125