From owner-freebsd-hackers@FreeBSD.ORG  Mon Feb  9 10:49:31 2004
Return-Path: <owner-freebsd-hackers@FreeBSD.ORG>
Delivered-To: freebsd-hackers@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id 2D3EF16A4CE
	for <freebsd-hackers@freebsd.org>;
	Mon,  9 Feb 2004 10:49:31 -0800 (PST)
Received: from kientzle.com (h-66-166-149-50.SNVACAID.covad.net
	[66.166.149.50])
	by mx1.FreeBSD.org (Postfix) with ESMTP id C13F143D1F
	for <freebsd-hackers@freebsd.org>;
	Mon,  9 Feb 2004 10:49:30 -0800 (PST)
	(envelope-from kientzle@acm.org)
Received: from acm.org ([66.166.149.54])
	by kientzle.com (8.12.9/8.12.9) with ESMTP id i19InJkX008270;
	Mon, 9 Feb 2004 10:49:19 -0800 (PST)
	(envelope-from kientzle@acm.org)
Message-ID: <4027D62F.3010702@acm.org>
Date: Mon, 09 Feb 2004 10:49:19 -0800
From: Tim Kientzle <kientzle@acm.org>
User-Agent: Mozilla/5.0 (X11; U; FreeBSD i386; en-US; rv:1.4) Gecko/20031006
X-Accept-Language: en-us, en
MIME-Version: 1.0
To: Harti Brandt <brandt@fokus.fraunhofer.de>
References: <4025A0DD.2010607@acm.org>
	<20040208134125.L28775@beagle.fokus.fraunhofer.de> <40269DF5.2090806@acm.org>
	<20040209122341.S32427@beagle.fokus.fraunhofer.de>
In-Reply-To: <20040209122341.S32427@beagle.fokus.fraunhofer.de>
Content-Type: text/plain; charset=us-ascii; format=flowed
Content-Transfer-Encoding: 7bit
cc: freebsd-hackers@freebsd.org
Subject: Re: Odd ACL question
X-BeenThere: freebsd-hackers@freebsd.org
X-Mailman-Version: 2.1.1
Precedence: list
Reply-To: kientzle@acm.org
List-Id: Technical Discussions relating to FreeBSD
	<freebsd-hackers.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-hackers>,
	<mailto:freebsd-hackers-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-hackers>
List-Post: <mailto:freebsd-hackers@freebsd.org>
List-Help: <mailto:freebsd-hackers-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-hackers>,
	<mailto:freebsd-hackers-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Mon, 09 Feb 2004 18:49:31 -0000

Harti Brandt wrote:
> On Sun, 8 Feb 2004, Tim Kientzle wrote:
> 
> TK>In this case, I'm considering:
> TK>   * If the username exists, use that.
> TK>   * If the username does not exist and the UID is not already in
> TK>       use, issue a warning and use the UID.
> TK>   * If the username exists and the UID conflicts with the local
> TK>       system, ???
> TK>
> TK>This last case is the tough one.  My temptation:  map it to
> TK>an unused UID, issue a warning about the remap, and keep going.
> 
> That may cause the problem I described. This may leave a file in a user
> directory that the user cannot delete without intervention of the root
> user, but its probably the simplest solution.

This would only happen if you are restoring an archive onto
a different system.  If it's the same system, there should be
no UID conflicts and thus no need to remap the UIDs.

I would be very interested in hearing any alternative suggestions.

> What about non-existing groups?

I think I would handle this the same way (for consistency).

> Are you going to replace that horrible thing called GNU tar in the bases
> system?

Probably, yes.

Tim Kientzle