1#!/bin/sh 2 3# 4# Copyright (c) 2015 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# Verify that mmap access updates mtime and ctime on files located on a 30# tmpfs FS. 31# Fixed by r277828 and r277969. 32 33[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1 34 35. ../default.cfg 36 37odir=`pwd` 38cd /tmp 39sed '1,/^EOF/d' < $odir/$0 > tmpfs14.c 40rm -f /tmp/tmpfs14 41mycc -o tmpfs14 -Wall -Wextra -g -O2 tmpfs14.c || exit 1 42rm -f tmpfs14.c 43cd $odir 44 45mount | grep -q "$mntpoint " && umount -f $mntpoint 46mount -t tmpfs tmpfs $mntpoint 47 48(cd $mntpoint; /tmp/tmpfs14) & 49 50sleep .5 51set `stat -f "%m %c" $mntpoint/test` 52m1=$1 53c1=$2 54while pgrep -q tmpfs14; do 55 set `stat -f "%m %c" $mntpoint/test` 56 [ "$m1" != "$1" ] && break 57 [ "$c1" != "$2" ] && break 58 sleep 1 59done 60[ "$m1" = "$1" -o "$c1" = "$2" ] && 61 echo "FAIL Unchanged time $m1 $c1 / $1 $2" 62wait 63 64while mount | grep $mntpoint | grep -q tmpfs; do 65 umount $mntpoint || sleep 1 66done 67rm -f /tmp/tmpfs14 68exit 0 69EOF 70 71#include <sys/types.h> 72#include <sys/mman.h> 73 74#include <err.h> 75#include <errno.h> 76#include <stdio.h> 77#include <stdlib.h> 78#include <unistd.h> 79#include <fcntl.h> 80#include <time.h> 81 82char *file = "test"; 83 84int 85main(void) 86{ 87 char *p; 88 size_t len; 89 int fd, i; 90 91 if ((fd = open(file, O_RDWR | O_CREAT, 0644)) == -1) 92 err(1, "open(%s)", file); 93 if (write(fd, "abcdef", 7) < 0) 94 err(1, "write"); 95 close(fd); 96 97 len = getpagesize(); 98 for (i = 0; i < 10; i++) { 99 sleep(1); 100 if ((fd = open(file, O_RDWR | O_CREAT, 0644)) == -1) 101 err(1, "open(%s)", file); 102 103 if ((p = mmap(NULL, len, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0)) == MAP_FAILED) 104 err(1, "mmap"); 105 106 p[0] = '0' + i; 107 munmap(p, len); 108 close(fd); 109 } 110 111 return 0; 112} 113