From owner-freebsd-jail@FreeBSD.ORG  Mon Jun  6 20:40:54 2011
Return-Path: <owner-freebsd-jail@FreeBSD.ORG>
Delivered-To: freebsd-jail@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id D6FB1106566C
	for <freebsd-jail@freebsd.org>; Mon,  6 Jun 2011 20:40:54 +0000 (UTC)
	(envelope-from amweeden.earlham@gmail.com)
Received: from mail-ww0-f42.google.com (mail-ww0-f42.google.com [74.125.82.42])
	by mx1.freebsd.org (Postfix) with ESMTP id 6C4A88FC15
	for <freebsd-jail@freebsd.org>; Mon,  6 Jun 2011 20:40:53 +0000 (UTC)
Received: by wwk4 with SMTP id 4so1864314wwk.1
	for <freebsd-jail@freebsd.org>; Mon, 06 Jun 2011 13:40:53 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma;
	h=domainkey-signature:mime-version:date:message-id:subject:from:to
	:content-type; bh=eV0jTecrx7feuCl8enpdGxMn2/BSUnpnJGptb+aAVfk=;
	b=Oj+lEywXhvzYpmAC69a0MLP2xMVxsLqhxCtIpHl4hujy5io4gHOYLOqI/qIKIsdtrc
	EhnIyQjQRERwpIWRqJqWCJoan1Sw9X8mQ7qBaD7k8ofnJE4KHckp7MutWdG0veDn1vNO
	FmKWuZCRmkoMjHxFl3gZ2Sl6IsrmaFXdjn4xU=
DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma;
	h=mime-version:date:message-id:subject:from:to:content-type;
	b=ECkRNHKF/jOeFeZpVrDQYSO3mk9ZMzz/SfJioelE9Qlo2DGe+eq7XTcD0N8XFDO2aM
	6tG2nZQBG7leIZHUuHb70KCxf3fF5yFs9LeeD0TFXNJ1jmVu86oc+CNElk4QDXR0O5BH
	szk8QvsE+04w/pX3N9ubGmSxQfNlr4Yctj5cs=
MIME-Version: 1.0
Received: by 10.227.108.233 with SMTP id g41mr5446415wbp.22.1307391105529;
	Mon, 06 Jun 2011 13:11:45 -0700 (PDT)
Received: by 10.227.137.75 with HTTP; Mon, 6 Jun 2011 13:11:45 -0700 (PDT)
Date: Mon, 6 Jun 2011 16:11:45 -0400
Message-ID: <BANLkTi=FsEtVxV0grAottCfMpq4rgc2OPg@mail.gmail.com>
From: Aaron Weeden <amweeden.earlham@gmail.com>
To: freebsd-jail@freebsd.org
Content-Type: text/plain; charset=ISO-8859-1
Subject: NFS export of directory in jail
X-BeenThere: freebsd-jail@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: "Discussion about FreeBSD jail\(8\)" <freebsd-jail.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-jail>,
	<mailto:freebsd-jail-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-jail>
List-Post: <mailto:freebsd-jail@freebsd.org>
List-Help: <mailto:freebsd-jail-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-jail>,
	<mailto:freebsd-jail-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Mon, 06 Jun 2011 20:40:54 -0000

I am wondering if a parent can export NFS from a mount point inside of
a jail running on that host.  More specifically, here is the scenario:

The parent, murphy, is FreeBSD 8.2-STABLE, running ezjail version 3.0.

A jail, positron, is rooted on murphy in /usr/local/jails1/positron.

positron has a directory, /clients.  murphy will export this directory
using NFS.

murphy's /etc/exports looks like this:
/usr/local/jails1/positron/clients -network 192.168 -mask
255.255.255.0 -maproot=root

I have been told that funny things can happen if a parent tries to
access part of a jail without using jexec.

Will something weird happen to murphy or positron in the scenario
described above?

Thanks,
Aaron