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# tmpfs(4) name lookup problem seen: 30 31# $ ./tmpfs10.sh 32# tmpfs10: unlink(p01193.14729) at loop #2: No such file or directory 33# unlink(p01193.14729) succeeded at call #2. 34# tmpfs10: unlink(p01186.14409) at loop #2: No such file or directory 35# unlink(p01186.14409) succeeded at call #2. 36# FAIL 37# $ 38 39# Fixed in r253967. 40 41[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1 42 43. ../default.cfg 44 45odir=`pwd` 46cd /tmp 47sed '1,/^EOF/d' < $odir/$0 > tmpfs10.c 48mycc -o tmpfs10 -Wall -Wextra -O2 -g tmpfs10.c || exit 1 49rm -f tmpfs10.c 50cd $odir 51 52mount | grep -q "on $mntpoint " && umount $mntpoint 53mount -t tmpfs tmpfs $mntpoint 54cd $mntpoint 55/tmp/tmpfs10 || 56{ find $mntpoint ! -type d | xargs ls -il; echo FAIL; } 57cd $odir 58umount $mntpoint 59rm -f /tmp/tmpfs10 60exit 0 61EOF 62#include <err.h> 63#include <errno.h> 64#include <fcntl.h> 65#include <stdio.h> 66#include <stdlib.h> 67#include <sys/param.h> 68#include <sys/stat.h> 69#include <sys/wait.h> 70#include <unistd.h> 71 72static int loop; 73int error; 74 75#define PARALLEL 20 76#define SIZE 16000 77 78void 79test2(void) 80{ 81 int i, j, k; 82 pid_t pid; 83 char file[128], dir[128]; 84 85 loop++; 86 pid = getpid(); 87 sprintf(dir,"%s.%05d", getprogname(), pid); 88 if (mkdir(dir, 0770) < 0) 89 err(1, "mkdir(%s), %s:%d", dir, __FILE__, __LINE__); 90 91 if (chdir(dir) == -1) 92 err(1, "chdir(%s), %s:%d", dir, __FILE__, __LINE__); 93 94 for (j = 0; j < SIZE; j++) { 95 sprintf(file,"p%05d.%05d", pid, j); 96 if (symlink("/tmp/not/there", file) == -1) { 97 if (errno != EINTR) { 98 warn("symlink(%s). %s.%d", file, __FILE__, __LINE__); 99 break; 100 } 101 } 102 } 103 104 for (i = --j; i >= 0; i--) { 105 sprintf(file,"p%05d.%05d", pid, i); 106 if (unlink(file) == -1) { 107 warn("unlink(%s) at loop #%d", file, loop); 108 error++; 109 for (k = 0; k < 10; k++) { 110 usleep(10000); 111 if (unlink(file) == 0) { 112 fprintf(stderr, 113 "unlink(%s) succeeded at call #%d.\n", 114 file, k + 2); 115 break; 116 } 117 } 118 } 119 } 120 121 (void)chdir(".."); 122 if (rmdir(dir) == -1) 123 warn("rmdir(%s), %s:%d", dir, __FILE__, __LINE__); 124 125} 126 127void 128test(void) 129{ 130 sleep(arc4random() % 3 + 1); 131 132 test2(); 133 if (error == 0) 134 test2(); 135 136 _exit(error); 137} 138 139int 140main(void) 141{ 142 int e, i, status; 143 144 for (i = 0; i < PARALLEL; i++) 145 if (fork() == 0) 146 test(); 147 148 e = 0; 149 for (i = 0; i < PARALLEL; i++) { 150 wait(&status); 151 e += WEXITSTATUS(status); 152 } 153 154 return (e); 155} 156