1#!/bin/sh 2 3# 4# Copyright (c) 2013 EMC Corp. 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# SU problem with "mkdir(d.008740.000987): Too many links" seen. 30 31[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1 32 33. ../default.cfg 34 35here=`pwd` 36cd /tmp 37sed '1,/^EOF/d' < $here/$0 > rename11.c 38mycc -o rename11 -Wall -Wextra rename11.c || exit 1 39rm -f rename11.c 40 41mount | grep "on $mntpoint " | grep -q /dev/md && umount -f $mntpoint 42mdconfig -l | grep -q md$mdstart && mdconfig -d -u $mdstart 43 44mdconfig -a -t swap -s 2g -u $mdstart || exit 1 45 46[ $# -eq 1 ] && newfs_flags=$1 # Problem only seen with SU 47echo newfs $newfs_flags md$mdstart 48newfs $newfs_flags md$mdstart > /dev/null 49mount /dev/md$mdstart $mntpoint 50 51mkdir $mntpoint/dir 52( 53 cd $mntpoint/dir 54 /tmp/rename11 || echo FAIL 55) 56 57while mount | grep "on $mntpoint " | grep -q /dev/md; do 58 umount $mntpoint || sleep 1 59done 60 61checkfs /dev/md$mdstart; s=$? 62mdconfig -d -u $mdstart 63rm -rf /tmp/rename11 64exit $s 65EOF 66#include <sys/types.h> 67#include <sys/stat.h> 68#include <sys/wait.h> 69#include <err.h> 70#include <fcntl.h> 71#include <libgen.h> 72#include <stdio.h> 73#include <stdlib.h> 74#include <string.h> 75#include <unistd.h> 76 77#define LOOPS 10 78#define PARALLEL 3 79#define ND 5000 80 81static void 82check(char *name) 83{ 84 struct stat sb; 85 86 if (stat(name, &sb) == -1) 87 warn("stat(%s)", name); 88 else 89 warnx("stat(%s) succeeded!", name); 90} 91 92static void 93dirs(void) 94{ 95 pid_t pid; 96 int i, j; 97 char name[80], to[80]; 98 99 pid = getpid(); 100 101 for (j = 0; j < LOOPS; j++) { 102 for (i = 0; i < ND; i++) { 103 snprintf(name, sizeof(name), "d.%06d.%06d", pid, i); 104 if (mkdir(name, 0700) == -1) 105 err(1, "mkdir(%s)", name); 106 snprintf(to , sizeof(to ), "d2.%06d.%06d", pid, i); 107 if (rename(name, to) == -1) 108 warn("rename(%s, %s)", name, to); 109 if (rename(to, name) == -1) 110 warn("rename(%s, %s)", to, name); 111 if (rmdir(name) == -1) { 112 check(name); 113 err(1, "rmdir(%s)", name); 114 } 115 } 116 } 117 118 _exit(0); 119} 120 121int 122main(void) 123{ 124 int i, r, s; 125 126 r = 0; 127 for (i = 0; i < PARALLEL; i++) { 128 if (fork() == 0) 129 dirs(); 130 } 131 132 for (i = 0; i < PARALLEL; i++) { 133 wait(&s); 134 r += WEXITSTATUS(s); 135 } 136 137 return (r); 138} 139