From owner-freebsd-arch@FreeBSD.ORG  Wed Jun 25 10:26:51 2003
Return-Path: <owner-freebsd-arch@FreeBSD.ORG>
Delivered-To: freebsd-arch@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id 4971937B401
	for <freebsd-arch@freebsd.org>; Wed, 25 Jun 2003 10:26:51 -0700 (PDT)
Received: from fledge.watson.org (fledge.watson.org [204.156.12.50])
	by mx1.FreeBSD.org (Postfix) with ESMTP id 89FCB43FE9
	for <freebsd-arch@freebsd.org>; Wed, 25 Jun 2003 10:26:50 -0700 (PDT)
	(envelope-from robert@fledge.watson.org)
Received: from fledge.watson.org (localhost [127.0.0.1])
	by fledge.watson.org (8.12.9/8.12.9) with ESMTP id h5PHQSKJ057237;
	Wed, 25 Jun 2003 13:26:28 -0400 (EDT)
	(envelope-from robert@fledge.watson.org)
Received: from localhost (robert@localhost)h5PHQS1I057232;
	Wed, 25 Jun 2003 13:26:28 -0400 (EDT)
	(envelope-from robert@fledge.watson.org)
Date: Wed, 25 Jun 2003 13:26:28 -0400 (EDT)
From: Robert Watson <rwatson@freebsd.org>
X-Sender: robert@fledge.watson.org
To: Pawel Jakub Dawidek <nick@garage.freebsd.pl>
In-Reply-To: <20030624164602.GW7587@garage.freebsd.pl>
Message-ID: <Pine.NEB.3.96L.1030625132446.57143A-100000@fledge.watson.org>
MIME-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII
cc: freebsd-arch@freebsd.org
Subject: Re: Jailed sysvipc implementation.
X-BeenThere: freebsd-arch@freebsd.org
X-Mailman-Version: 2.1.1
Precedence: list
List-Id: Discussion related to FreeBSD architecture
	<freebsd-arch.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-arch>,
	<mailto:freebsd-arch-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-arch>
List-Post: <mailto:freebsd-arch@freebsd.org>
List-Help: <mailto:freebsd-arch-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-arch>,
	<mailto:freebsd-arch-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Wed, 25 Jun 2003 17:26:51 -0000


On Tue, 24 Jun 2003, Pawel Jakub Dawidek wrote:

> Some time ago I've implemented private memory zones for IPC mechism.
> Every jail and main host got its own memory for IPC operations.
> It was implemented for FreeBSD 4.x. Avaliable at:
> 
> 	http://garage.freebsd.pl/privipc.tbz
> 	http://garage.freebsd.pl/privipc.README
> 
> I want to port this to FreeBSD 5.x, but with many improvements.  Because
> of that there are few things to talk about and I'm curious if anyone
> will be interested in answering my questions and at the end commiting
> this to -CURRENT. 
> 
> Patch will not be a "fast hack" so the best way will be commiting this
> in parts. I got already working sysvipv_msg mechanism. 
> 
> So if anyone is interested in, please inform me and I'll ask my
> questions and I'll send also what I got now. 

We have some initial patches that wrap the user ipcperm structure in a
kernel-specific structure, which we use to add a MAC label.  It would be
easy to also add a prison pointer.  We probably won't get to merging this
patch for a couple of weeks, but it's worth keeping in mind. 

  http://www.watson.org/~robert/freebsd/mac_sysvipc.diff

This needs style cleanup, bug fixing, testing, etc, but it's the direction
we're pushing in for MAC right now.

Robert N M Watson             FreeBSD Core Team, TrustedBSD Projects
robert@fledge.watson.org      Network Associates Laboratories