1#!/bin/sh 2 3# 4# Copyright (c) 2008 Peter Holm <pho@FreeBSD.org> 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# $FreeBSD$ 29# 30 31# Testing problem with premature disk full problem with symlinks 32 33[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1 34 35. ../default.cfg 36 37D=$diskimage 38dede $D 1m 1024 || exit 1 39 40odir=`pwd` 41dir=$mntpoint 42 43cd /tmp 44sed '1,/^EOF/d' < $odir/$0 > symlink.c 45cc -o symlink -Wall symlink.c 46rm -f symlink.c 47cd $odir 48 49mount | grep "$mntpoint" | grep md${mdstart} > /dev/null && umount $mntpoint 50mdconfig -l | grep md${mdstart} > /dev/null && mdconfig -d -u ${mdstart} 51 52mdconfig -a -t vnode -f $D -u ${mdstart} 53 54 55tst() { 56 cd $dir 57 df -ik $mntpoint 58 i=`df -ik $mntpoint | tail -1 | awk '{printf "%d\n", ($7 - 500)/2}'` 59 [ $i -gt 20000 ] && i=20000 60 61 for k in `jot 5`; do 62 for j in `jot 2`; do 63 /tmp/symlink $i & 64 done 65 for j in `jot 2`; do 66 wait 67 done 68 df -ik $mntpoint | tail -1 69# sleep 30 # With this enabled, soft update also works 70 done 71 cd $odir 72} 73 74for i in "" "-U"; do 75 echo "newfs $i /dev/md${mdstart}" 76 newfs $i /dev/md${mdstart} > /dev/null 2>&1 77 mount /dev/md${mdstart} ${mntpoint} 78 79 tst 80 81 umount -f ${mntpoint} 82done 83mdconfig -d -u $mdstart 84exit 85EOF 86#include <sys/types.h> 87#include <sys/sysctl.h> 88#include <unistd.h> 89#include <stdio.h> 90#include <fcntl.h> 91#include <stdlib.h> 92#include <sys/stat.h> 93#include <sys/param.h> 94#include <sys/mount.h> 95#include <errno.h> 96#include <err.h> 97 98int 99main(int argc, char **argv) 100{ 101 int i, j; 102 int64_t size; 103 pid_t pid; 104 char file[128]; 105 106 size = atol(argv[1]); 107 108// printf("Creating %jd symlinks...\n", size); fflush(stdout); 109 pid = getpid(); 110 for (j = 0; j < size; j++) { 111 sprintf(file,"p%05d.%05d", pid, j); 112 if (symlink("/mnt/not/there", file) == -1) { 113 if (errno != EINTR) { 114 warn("symlink(%s)", file); 115 printf("break out at %d, errno %d\n", j, errno); 116 break; 117 } 118 } 119 } 120 121// printf("Deleting %jd files...\n", size); fflush(stdout); 122 for (i = --j; i >= 0; i--) { 123 sprintf(file,"p%05d.%05d", pid, i); 124 if (unlink(file) == -1) 125 err(3, "unlink(%s)", file); 126 127 } 128 return (0); 129} 130