1*8a272653SPeter Holm#!/bin/sh 2*8a272653SPeter Holm 3*8a272653SPeter Holm# 4*8a272653SPeter Holm# Copyright (c) 2009 Peter Holm <pho@FreeBSD.org> 5*8a272653SPeter Holm# All rights reserved. 6*8a272653SPeter Holm# 7*8a272653SPeter Holm# Redistribution and use in source and binary forms, with or without 8*8a272653SPeter Holm# modification, are permitted provided that the following conditions 9*8a272653SPeter Holm# are met: 10*8a272653SPeter Holm# 1. Redistributions of source code must retain the above copyright 11*8a272653SPeter Holm# notice, this list of conditions and the following disclaimer. 12*8a272653SPeter Holm# 2. Redistributions in binary form must reproduce the above copyright 13*8a272653SPeter Holm# notice, this list of conditions and the following disclaimer in the 14*8a272653SPeter Holm# documentation and/or other materials provided with the distribution. 15*8a272653SPeter Holm# 16*8a272653SPeter Holm# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17*8a272653SPeter Holm# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18*8a272653SPeter Holm# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19*8a272653SPeter Holm# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20*8a272653SPeter Holm# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21*8a272653SPeter Holm# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22*8a272653SPeter Holm# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23*8a272653SPeter Holm# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24*8a272653SPeter Holm# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25*8a272653SPeter Holm# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26*8a272653SPeter Holm# SUCH DAMAGE. 27*8a272653SPeter Holm# 28*8a272653SPeter Holm 29*8a272653SPeter Holm# With lookup_shared=1 rename() will fail from time to time with ENOENT and 30*8a272653SPeter Holm# the following stat() will succeed. (Variation of rename.sh) 31*8a272653SPeter Holm 32*8a272653SPeter Holm. ../default.cfg 33*8a272653SPeter Holm 34*8a272653SPeter Holmhere=`pwd` 35*8a272653SPeter Holmcd /tmp 36*8a272653SPeter Holmsed '1,/^EOF/d' < $here/$0 > rename2.c 37*8a272653SPeter Holmmycc -o rename2 -Wall rename2.c || exit 1 38*8a272653SPeter Holmrm -f rename2.c 39*8a272653SPeter Holmcd $here 40*8a272653SPeter Holm 41*8a272653SPeter Holmrm -rf /tmp/rename.dir.* 42*8a272653SPeter Holmstart=`date +%s` 43*8a272653SPeter Holmwhile [ $((`date +%s` - start -lt 300 ]; do 44*8a272653SPeter Holm for j in `jot 10`; do 45*8a272653SPeter Holm /tmp/rename2 & 46*8a272653SPeter Holm done 47*8a272653SPeter Holm wait 48*8a272653SPeter Holmdone 49*8a272653SPeter Holmrm -rf /tmp/rename.dir.* /tmp/rename2 50*8a272653SPeter Holmexit 0 51*8a272653SPeter HolmEOF 52*8a272653SPeter Holm#include <sys/types.h> 53*8a272653SPeter Holm#include <sys/stat.h> 54*8a272653SPeter Holm#include <err.h> 55*8a272653SPeter Holm#include <fcntl.h> 56*8a272653SPeter Holm#include <stdio.h> 57*8a272653SPeter Holm#include <stdlib.h> 58*8a272653SPeter Holm#include <string.h> 59*8a272653SPeter Holm#include <time.h> 60*8a272653SPeter Holm#include <unistd.h> 61*8a272653SPeter Holm 62*8a272653SPeter Holmstatic char dir1[128]; 63*8a272653SPeter Holmstatic char dir2[128]; 64*8a272653SPeter Holm 65*8a272653SPeter Holmint 66*8a272653SPeter Holmmain(int argc, char **argv) 67*8a272653SPeter Holm{ 68*8a272653SPeter Holm struct stat sb; 69*8a272653SPeter Holm time_t start; 70*8a272653SPeter Holm 71*8a272653SPeter Holm sprintf(dir1, "/tmp/rename.dir.%d", getpid()); 72*8a272653SPeter Holm sprintf(dir2, "/tmp/rename.dir.2.%d", getpid()); 73*8a272653SPeter Holm if (mkdir(dir1, 0700) == -1) 74*8a272653SPeter Holm err(1, "mkdir(%s)", dir1); 75*8a272653SPeter Holm 76*8a272653SPeter Holm if (chdir(dir1) == -1) 77*8a272653SPeter Holm err(1, "chdir(%s)", dir1); 78*8a272653SPeter Holm if (chdir("..") == -1) 79*8a272653SPeter Holm err(1, "chdir(%s)", ".."); 80*8a272653SPeter Holm 81*8a272653SPeter Holm start = time(NULL); 82*8a272653SPeter Holm while ((time(NULL) - start) < 120) { 83*8a272653SPeter Holm if (rename(dir1, dir2) == -1) { 84*8a272653SPeter Holm warn("rename(%s, %s)", dir1, dir2); 85*8a272653SPeter Holm if (stat(dir1, &sb) == -1) 86*8a272653SPeter Holm err(1, "stat(%s)", dir1); 87*8a272653SPeter Holm else 88*8a272653SPeter Holm errx(1, "stat(%s) succeeded!", dir1); 89*8a272653SPeter Holm } 90*8a272653SPeter Holm if (rename(dir2, dir1) == -1) { 91*8a272653SPeter Holm warn("rename(%s, %s)", dir2, dir1); 92*8a272653SPeter Holm if (stat(dir2, &sb) == -1) 93*8a272653SPeter Holm err(1, "stat(%s)", dir2); 94*8a272653SPeter Holm else 95*8a272653SPeter Holm errx(1, "stat(%s) succeeded!", dir2); 96*8a272653SPeter Holm } 97*8a272653SPeter Holm } 98*8a272653SPeter Holm 99*8a272653SPeter Holm if (rmdir(dir1) == -1) 100*8a272653SPeter Holm err(1, "rmdir(%s)", dir1); 101*8a272653SPeter Holm 102*8a272653SPeter Holm return (0); 103*8a272653SPeter Holm} 104