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Date:      Mon, 23 Apr 2001 20:00:47 -0400 (EDT)
From:      Robert Watson <rwatson@FreeBSD.ORG>
To:        Hroi Sigurdsson <hroi@asdf.dk>
Cc:        freebsd-arch@FreeBSD.ORG
Subject:   Re: jailNG
Message-ID:  <Pine.NEB.3.96L.1010423195108.99299B-100000@fledge.watson.org>
In-Reply-To: <3AE48FFB.69A6142E@asdf.dk>

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On Mon, 23 Apr 2001, Hroi Sigurdsson wrote:

> Robert Watson wrote:
> 
> >   http://www.watson.org/~robert/jailng/
> 
> Very nice! What about the possibility of setting a non-overridable
> "nice" value on jails or maybe rlimit? 

One issue that does need to be addressed in the new code is a problem
inherited from the old code: a number of services are addressed on the
global scope rather than the jail scope, including resource
limits/accounting.

One challenge in the jail implementation is a way to do this such that the
jail code remains (relatively) cleanly abstracted from the remainder of
the system.  This is generally true of a number of namespace-based
services, including System V IPC.  I've toyed with a number of ideas,
including a p->p_namespace, but haven't reached any firm conclusions yet,
especially regarding situations where multiple issues (not just jail()) 
might be associated with namespace management.  In the mean time, I'll
continue my general cleanup of the authorization code. 

Robert N M Watson             FreeBSD Core Team, TrustedBSD Project
robert@fledge.watson.org      NAI Labs, Safeport Network Services



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