From owner-cvs-src@FreeBSD.ORG  Sun Feb 15 08:29:37 2004
Return-Path: <owner-cvs-src@FreeBSD.ORG>
Delivered-To: cvs-src@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP
	id 74A5316A4CE; Sun, 15 Feb 2004 08:29:37 -0800 (PST)
Received: from fledge.watson.org (fledge.watson.org [204.156.12.50])
	by mx1.FreeBSD.org (Postfix) with ESMTP
	id F2CF643D1F; Sun, 15 Feb 2004 08:29:35 -0800 (PST)
	(envelope-from robert@fledge.watson.org)
Received: from fledge.watson.org (localhost [127.0.0.1])
	by fledge.watson.org (8.12.10/8.12.10) with ESMTP id i1FGT9DL056529;
	Sun, 15 Feb 2004 11:29:10 -0500 (EST)
	(envelope-from robert@fledge.watson.org)
Received: from localhost (robert@localhost)i1FGT9FH056526;
	Sun, 15 Feb 2004 11:29:09 -0500 (EST)
	(envelope-from robert@fledge.watson.org)
Date: Sun, 15 Feb 2004 11:29:09 -0500 (EST)
From: Robert Watson <rwatson@FreeBSD.org>
X-Sender: robert@fledge.watson.org
To: Pawel Jakub Dawidek <pjd@FreeBSD.org>
In-Reply-To: <20040215162455.GZ14639@garage.freebsd.pl>
Message-ID: <Pine.NEB.3.96L.1040215112750.56481A-100000@fledge.watson.org>
MIME-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII
cc: cvs-src@FreeBSD.org
cc: src-committers@FreeBSD.org
cc: cvs-all@FreeBSD.org
Subject: Re: cvs commit: src/sys/kern kern_jail.c
X-BeenThere: cvs-src@freebsd.org
X-Mailman-Version: 2.1.1
Precedence: list
List-Id: CVS commit messages for the src tree <cvs-src.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/cvs-src>,
	<mailto:cvs-src-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/cvs-src>
List-Post: <mailto:cvs-src@freebsd.org>
List-Help: <mailto:cvs-src-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/cvs-src>,
	<mailto:cvs-src-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Sun, 15 Feb 2004 16:29:37 -0000


On Sun, 15 Feb 2004, Pawel Jakub Dawidek wrote:

> On Sat, Feb 14, 2004 at 11:19:48AM -0800, Robert Watson wrote:
> +>   Commiter:	Robert Watson <rwatson@FreeBSD.org>
> +>   Branch:	HEAD
> +> 
> +>   Files:
> +> 	1.38   src/sys/kern/kern_jail.c  
> +> 
> +>   Log:
> +>   By default, don't allow processes in a jail to list the set of
> +>   jails in the system.  Previous behavior (allowed) may be restored
> +>   by setting security.jail.list_allowed=1.
> 
> Are you planning to leave this sysctl?  IMHO the previous behaviour was
> just bad, this was a bug, and restoring this behaviour shouldn't be
> permitted.  But if this sysctl is just a temporary solution and will be
> removed in the future, it is ok (but maybe BURN_BRIDGES should be
> added?). 
> 
> PS. This functionality is quite fresh, I'm not sure if someone started
>     to depend on it...

Yeah, the interesting question here is whether it was intentional in the
first place for a good reason, or just a by-product of the implementation.
How about we wait three weeks and see if anyone complains on
freebsd-current about the loss of functionality -- if no one says
anything, we remove the sysctl?

Robert N M Watson             FreeBSD Core Team, TrustedBSD Projects
robert@fledge.watson.org      Senior Research Scientist, McAfee Research