From owner-freebsd-current@FreeBSD.ORG  Thu Jul 17 02:08:11 2008
Return-Path: <owner-freebsd-current@FreeBSD.ORG>
Delivered-To: freebsd-current@FreeBSD.ORG
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id 6170D1065681;
	Thu, 17 Jul 2008 02:08:11 +0000 (UTC) (envelope-from das@FreeBSD.ORG)
Received: from zim.MIT.EDU (ZIM.MIT.EDU [18.95.3.101])
	by mx1.freebsd.org (Postfix) with ESMTP id 18D698FC13;
	Thu, 17 Jul 2008 02:08:10 +0000 (UTC) (envelope-from das@FreeBSD.ORG)
Received: from zim.MIT.EDU (localhost [127.0.0.1])
	by zim.MIT.EDU (8.14.2/8.14.2) with ESMTP id m6H28Jau022174;
	Wed, 16 Jul 2008 22:08:19 -0400 (EDT) (envelope-from das@FreeBSD.ORG)
Received: (from das@localhost)
	by zim.MIT.EDU (8.14.2/8.14.2/Submit) id m6H28Jmn022173;
	Wed, 16 Jul 2008 22:08:19 -0400 (EDT) (envelope-from das@FreeBSD.ORG)
Date: Wed, 16 Jul 2008 22:08:19 -0400
From: David Schultz <das@FreeBSD.ORG>
To: Dimitry Andric <dimitry@andric.com>
Message-ID: <20080717020819.GA22145@zim.MIT.EDU>
Mail-Followup-To: Dimitry Andric <dimitry@andric.com>,
	Doug Barton <dougb@FreeBSD.ORG>,
	Dan Nelson <dnelson@allantgroup.com>, freebsd-current@FreeBSD.ORG
References: <487E533F.7050303@FreeBSD.org>
	<20080716201819.GB19044@dan.emsphone.com>
	<487E5DCD.3010206@FreeBSD.org>
	<20080716210306.GA20758@zim.MIT.EDU> <487E71B4.305@andric.com>
	<487E7364.2040909@andric.com>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <487E7364.2040909@andric.com>
Cc: Doug Barton <dougb@FreeBSD.ORG>, Dan Nelson <dnelson@allantgroup.com>,
	freebsd-current@FreeBSD.ORG
Subject: Re: Heads Up: shutdown keyword added to 34 rc.d scripts.
X-BeenThere: freebsd-current@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: Discussions about the use of FreeBSD-current
	<freebsd-current.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-current>, 
	<mailto:freebsd-current-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-current>
List-Post: <mailto:freebsd-current@freebsd.org>
List-Help: <mailto:freebsd-current-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-current>,
	<mailto:freebsd-current-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Thu, 17 Jul 2008 02:08:11 -0000

On Thu, Jul 17, 2008, Dimitry Andric wrote:
> On 2008-07-17 00:09, Dimitry Andric wrote:
> > Possibly just the "reverse" of the startup deps?
> 
> Ah, I just see this in rc(8):
> 
>    Operation of rc.shutdown
> ...
>      3.   Invoke rcorder(8) to order the files in /etc/rc.d/ and the
>           $local_startup directories that have a ``shutdown'' KEYWORD (refer
>           to rcorder(8)'s -k flag), reverse that order, and assign the result
>           to a variable.
> 
> e.g. it's already taken care of, apparently. :)

This just reverses the startup deps, as you suggested earlier.
I seem to recall that there was at least one example from Solaris
where that was the wrong thing to do. (Clearly it's also overly
conservative in some cases.) But they were trying to do more
sophistocated things as well, such as automatically restart failed
services. (This isn't trivial because when services depend on each
other, it's hard to tell which one failed, and it may even take
some trial and error.) Maybe we just haven't run into any situations
where it matters.