1#!/bin/sh 2 3# 4# Copyright (c) 2009 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 29# With lookup_shared=1 rename() will fail from time to time with ENOENT and 30# the following stat() will succeed. (Variation of rename.sh) 31 32. ../default.cfg 33 34here=`pwd` 35cd /tmp 36sed '1,/^EOF/d' < $here/$0 > rename2.c 37mycc -o rename2 -Wall rename2.c || exit 1 38rm -f rename2.c 39cd $here 40 41rm -rf /tmp/rename.dir.* 42start=`date +%s` 43while [ $((`date +%s` - start)) -lt 300 ]; do 44 for j in `jot 10`; do 45 /tmp/rename2 & 46 done 47 wait 48done 49rm -rf /tmp/rename.dir.* /tmp/rename2 50exit 0 51EOF 52#include <sys/types.h> 53#include <sys/stat.h> 54#include <err.h> 55#include <fcntl.h> 56#include <stdio.h> 57#include <stdlib.h> 58#include <string.h> 59#include <time.h> 60#include <unistd.h> 61 62static char dir1[128]; 63static char dir2[128]; 64 65int 66main(int argc, char **argv) 67{ 68 struct stat sb; 69 time_t start; 70 71 sprintf(dir1, "/tmp/rename.dir.%d", getpid()); 72 sprintf(dir2, "/tmp/rename.dir.2.%d", getpid()); 73 if (mkdir(dir1, 0700) == -1) 74 err(1, "mkdir(%s)", dir1); 75 76 if (chdir(dir1) == -1) 77 err(1, "chdir(%s)", dir1); 78 if (chdir("..") == -1) 79 err(1, "chdir(%s)", ".."); 80 81 start = time(NULL); 82 while ((time(NULL) - start) < 120) { 83 if (rename(dir1, dir2) == -1) { 84 warn("rename(%s, %s)", dir1, dir2); 85 if (stat(dir1, &sb) == -1) 86 err(1, "stat(%s)", dir1); 87 else 88 errx(1, "stat(%s) succeeded!", dir1); 89 } 90 if (rename(dir2, dir1) == -1) { 91 warn("rename(%s, %s)", dir2, dir1); 92 if (stat(dir2, &sb) == -1) 93 err(1, "stat(%s)", dir2); 94 else 95 errx(1, "stat(%s) succeeded!", dir2); 96 } 97 } 98 99 if (rmdir(dir1) == -1) 100 err(1, "rmdir(%s)", dir1); 101 102 return (0); 103} 104