Date: Sat, 15 Aug 2009 08:39:55 +0000 (UTC) From: Peter Holm <pho@FreeBSD.org> To: src-committers@freebsd.org, svn-src-projects@freebsd.org Subject: svn commit: r196241 - projects/stress2/misc Message-ID: <200908150839.n7F8dtXR062612@svn.freebsd.org>
next in thread | raw e-mail | index | archive | help
Author: pho Date: Sat Aug 15 08:39:54 2009 New Revision: 196241 URL: http://svn.freebsd.org/changeset/base/196241 Log: Added a test scenario for when a UFS node is truncated to the zero length, which could cause kernel memory exhaustion. Fixed in r196206. Added: projects/stress2/misc/truncate.sh (contents, props changed) Added: projects/stress2/misc/truncate.sh ============================================================================== --- /dev/null 00:00:00 1970 (empty, because file is newly added) +++ projects/stress2/misc/truncate.sh Sat Aug 15 08:39:54 2009 (r196241) @@ -0,0 +1,95 @@ +#!/bin/sh + +# +# Copyright (c) 2009 Peter Holm <pho@FreeBSD.org> +# All rights reserved. +# +# Redistribution and use in source and binary forms, with or without +# modification, are permitted provided that the following conditions +# are met: +# 1. Redistributions of source code must retain the above copyright +# notice, this list of conditions and the following disclaimer. +# 2. Redistributions in binary form must reproduce the above copyright +# notice, this list of conditions and the following disclaimer in the +# documentation and/or other materials provided with the distribution. +# +# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND +# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE +# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +# SUCH DAMAGE. +# +# $FreeBSD$ +# + +# Test high water mark for freeblks + +. ../default.cfg + +here=`pwd` +cd /tmp +sed '1,/^EOF/d' < $here/$0 > truncate.c +cc -o truncate -Wall -O2 truncate.c +rm -f truncate.c +[ -d $RUNDIR ] || mkdir -p $RUNDIR +cd $RUNDIR + +/tmp/truncate + +rm -f /tmp/truncate +exit 0 +EOF +#include <fcntl.h> +#include <err.h> +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <sys/wait.h> + +#define SIZ 512 +char buf[SIZ]; + +void +test(void) +{ + int fd[10], i, j; + char name[128]; + + for (j = 0; j < 10; j++) { + sprintf(name, "%05d.%05d", getpid(), j); + if ((fd[j] = open(name, O_WRONLY | O_CREAT | O_APPEND, 0666)) == -1) + err(1, name); + unlink(name); + } + + for (i = 0; i < 100000; i++) { + for (j = 0; j < 10; j++) { + if (write(fd[j], buf, 2) != 2) + err(1, "write"); + if (ftruncate(fd[j], 0) == -1) + err(1, "ftruncate"); + } + } + + exit(0); +} +int +main(int argc, char **argv) +{ + int i, status; + + for (i = 0; i < 20; i++) { + if (fork() == 0) + test(); + } + for (i = 0; i < 20; i++) + wait(&status); + + return (0); +}
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?200908150839.n7F8dtXR062612>