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# Regression test for statfs problems with deleting a large number of files 32 33# $ ./statfs.sh 34# Filesystem 1K-blocks Used Avail Capacity iused ifree %iused Mounted on 35# /dev/ad0s1e 1982798 1782134 42042 98% 4965 254105 2% /tmp 36# Free inodes on /tmp: 254105 37# Creating 100000 files... 38# Deleting 100000 files... 39# Filesystem 1K-blocks Used Avail Capacity iused ifree %iused Mounted on 40# /dev/ad0s1e 1982798 -284096 2108272 -16% 4965 254105 2% /tmp 41# $ umount -f /tmp; mount /tmp 42# $ df -i /tmp 43# Filesystem 1K-blocks Used Avail Capacity iused ifree %iused Mounted on 44# /dev/ad0s1e 1982798 1784528 39648 98% 4965 254105 2% /tmp 45 46 47odir=`pwd` 48dir=/tmp 49 50cd $dir 51sed '1,/^EOF/d' < $odir/$0 > $dir/statfs.c 52cc -o statfs -Wall statfs.c 53rm -f statfs.c 54 55df -i /tmp 56./statfs 57df -i /tmp 58 59exit 60EOF 61/* $FreeBSD$ */ 62 63#include <sys/types.h> 64#include <sys/sysctl.h> 65#include <unistd.h> 66#include <stdio.h> 67#include <fcntl.h> 68#include <stdlib.h> 69#include <sys/stat.h> 70#include <sys/param.h> 71#include <sys/mount.h> 72#include <errno.h> 73#include <err.h> 74 75int64_t 76inodes(void) 77{ 78 char path[MAXPATHLEN+1]; 79 struct statfs buf; 80 81 sync(); 82 if (getcwd(path, sizeof(path)) == NULL) 83 err(1, "getcwd()"); 84 85 if (statfs(path, &buf) < 0) 86 err(1, "statfs(%s)", path); 87 printf("Free inodes on %s: %jd\n", path, buf.f_ffree); 88 return (buf.f_ffree); 89} 90 91int 92main() 93{ 94 int fd, i, j; 95 int64_t size; 96 pid_t pid; 97 char file[128]; 98 99 size = inodes() - 1000; 100 101 if (size > 100000) 102 size = 100000; 103 104 printf("Creating %jd files...", size); fflush(stdout); 105 pid = getpid(); 106 for (j = 0; j < size; j++) { 107 sprintf(file,"p%06d.%05d", pid, j); 108 if ((fd = open(file, O_CREAT | O_TRUNC | O_WRONLY, 0666)) == -1) { 109 if (errno != EINTR) { 110 warn("creat(%s)", file); 111 printf("break out at %d, errno %d\n", j, errno); 112 break; 113 } 114 } 115 if (fd != -1 && close(fd) == -1) 116 err(2, "close(%d)", j); 117 118 } 119 120 printf("\nDeleting %jd files...", size); fflush(stdout); 121 for (i = --j; i >= 0; i--) { 122 sprintf(file,"p%06d.%05d", pid, i); 123 if (unlink(file) == -1) 124 err(3, "unlink(%s)", file); 125 126 } 127 printf("\n"); 128 return (0); 129} 130