From owner-freebsd-current@FreeBSD.ORG  Sun Oct  2 03:58:20 2005
Return-Path: <owner-freebsd-current@FreeBSD.ORG>
X-Original-To: freebsd-current@freebsd.org
Delivered-To: freebsd-current@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id 6B0AD16A420
	for <freebsd-current@freebsd.org>; Sun,  2 Oct 2005 03:58:20 +0000 (GMT)
	(envelope-from freebsd@contexthosting.net)
Received: from mail.contexthosting.net (inception.centerfuse.net
	[209.120.245.121])
	by mx1.FreeBSD.org (Postfix) with ESMTP id DB87143D48
	for <freebsd-current@freebsd.org>; Sun,  2 Oct 2005 03:58:19 +0000 (GMT)
	(envelope-from freebsd@contexthosting.net)
Received: (qmail 4137 invoked by uid 89); 2 Oct 2005 03:58:19 -0000
Received: by simscan 1.0.7 ppid: 4133, pid: 4135, t: 0.0422s scanners:none
Received: from unknown (HELO ?192.168.1.100?)
	(jim@contexthosting.net@68.80.252.242)
	by 0 with (DHE-RSA-AES256-SHA encrypted) SMTP; 2 Oct 2005 03:58:18 -0000
Message-ID: <433F5AD7.9080705@contexthosting.net>
Date: Sat, 01 Oct 2005 23:58:15 -0400
From: Jim Keller <freebsd@contexthosting.net>
User-Agent: Mozilla Thunderbird 1.0 (Windows/20041206)
X-Accept-Language: en-us, en
MIME-Version: 1.0
To: freebsd-current@freebsd.org
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit
Subject: mount --bind equivalent? mount_null broken or not?
X-BeenThere: freebsd-current@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: Discussions about the use of FreeBSD-current
	<freebsd-current.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-current>, 
	<mailto:freebsd-current-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-current>
List-Post: <mailto:freebsd-current@freebsd.org>
List-Help: <mailto:freebsd-current-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-current>,
	<mailto:freebsd-current-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Sun, 02 Oct 2005 03:58:20 -0000

I've been using mount_null for quite some time to mount filesystems 
beneath chroot jails, and have had no problems. However, the man page 
for mount_null has had a warning (since 1995, apparently) that "IT 
DOESN'T WORK", and I know OpenBSD has removed nullfs support as of 
version 3.7 (per 
http://archives.neohapsis.com/archives/openbsd/2005-09/0198.html). The 
bug listed in that thread doesn't appear to apply to FreeBSD, as I was 
able to successfully null mount /dev and list its contents. So my 
questions are:

1. is nullfs actively supported on FreeBSD? If so, are there plans to 
continue supporting it?
2. If not, is there another way of mounting filesystems to alternate 
directories on the system, as linux's "mount --bind" does? Or will mount 
--bind be added to the FreeBSD mount command?

Thanks

-Jim Keller