From owner-cvs-all@FreeBSD.ORG  Wed Jul 28 17:25:08 2004
Return-Path: <owner-cvs-all@FreeBSD.ORG>
Delivered-To: cvs-all@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP
	id D074116A4CE; Wed, 28 Jul 2004 17:25:08 +0000 (GMT)
Received: from pooker.samsco.org (pooker.samsco.org [168.103.85.57])
	by mx1.FreeBSD.org (Postfix) with ESMTP
	id CB4D743D2F; Wed, 28 Jul 2004 17:25:05 +0000 (GMT)
	(envelope-from scottl@samsco.org)
Received: from [192.168.2.73] (cpe.125.wat.v126.packetworks.net
	[64.235.97.125] (may be forged))	(authenticated bits=0)
	by pooker.samsco.org (8.12.11/8.12.10) with ESMTP id i6SHVw0P015468;
	Wed, 28 Jul 2004 11:31:58 -0600 (MDT)
	(envelope-from scottl@samsco.org)
Message-ID: <4107E0F6.8060902@samsco.org>
Date: Wed, 28 Jul 2004 11:23:02 -0600
From: Scott Long <scottl@samsco.org>
User-Agent: Mozilla/5.0 (X11; U; FreeBSD i386; en-US; rv:1.7) Gecko/20040702
X-Accept-Language: en-us, en
MIME-Version: 1.0
To: Robert Watson <rwatson@FreeBSD.org>
References: <Pine.NEB.3.96L.1040728125025.26103B-100000@fledge.watson.org>
In-Reply-To: <Pine.NEB.3.96L.1040728125025.26103B-100000@fledge.watson.org>
X-Enigmail-Version: 0.84.2.0
X-Enigmail-Supports: pgp-inline, pgp-mime
Content-Type: text/plain; charset=us-ascii; format=flowed
Content-Transfer-Encoding: 7bit
X-Spam-Status: No, hits=0.0 required=3.8 tests=none autolearn=no version=2.63
X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on pooker.samsco.org
cc: cvs-src@FreeBSD.org
cc: Alfred Perlstein <alfred@FreeBSD.org>
cc: cvs-all@FreeBSD.org
cc: src-committers@FreeBSD.org
cc: Garrett Wollman <wollman@khavrinen.lcs.mit.edu>
Subject: Re: cvs commit: src/sys/sys _task.h
X-BeenThere: cvs-all@freebsd.org
X-Mailman-Version: 2.1.1
Precedence: list
List-Id: CVS commit messages for the entire tree <cvs-all.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/cvs-all>,
	<mailto:cvs-all-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/cvs-all>
List-Post: <mailto:cvs-all@freebsd.org>
List-Help: <mailto:cvs-all-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/cvs-all>,
	<mailto:cvs-all-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Wed, 28 Jul 2004 17:25:09 -0000

Robert Watson wrote:
> On Wed, 28 Jul 2004, Garrett Wollman wrote:
> 
> 
>><<On Wed, 28 Jul 2004 08:03:16 -0700, Alfred Perlstein <alfred@FreeBSD.ORG> said:
>>
>>
>>>* Maxime Henrion <mux@freebsd.org> [040728 02:19] wrote:
>>>
>>>>Or have a struct ifnet for kernel and a struct xifnet for userland, as we
>>>>do in other places.
>>
>>>That sounds more correct (xifnet).
>>
>>No.  Everything that would legitimately be available in an xifnet
>>structure is already made available through other interfaces.  The only
>>reason programs might need to look at a struct ifnet is because they're
>>mucking about in kernel memory, in which case they need the real one and
>>not a "sanitized" version.  (This is why I moved struct ifnet to
>><net/if_var.h> in the first place.) 
> 
> 
> Some applications and libraries declare their known violation of layering
> boundaries in the system by #define _KERNEL.  Others structures have
> special #define's, such as COMPAT_43, _WANT_UCRED, etc.  I'd be happy with
> either #define _KERNEL or #if defined(_KERNEL) || _WANT_IFNET.
> 
> Robert N M Watson             FreeBSD Core Team, TrustedBSD Projects
> robert@fledge.watson.org      Principal Research Scientist, McAfee Research
> 
> 

I'd be quite happy with

#ifndef _KERNEL
#error "No user-servicable parts inside"

or similar as is in /sys/sys/timetc.h.  Either way, pollution bad,
fluffy bunnies good.

Scott