X-Recipient:	archive-cygwin AT delorie DOT com
X-Spam-Check-By:	sourceware.org
Date:	Thu, 7 Aug 2008 18:42:41 +0200
From:	Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
To:	cygwin AT cygwin DOT com
Subject:	Re: CSIH patch (Re: Unable to run sshd under a domain sshd_server account [SOLVED])
Message-ID:	<20080807164241.GK3806@calimero.vinschen.de>
Reply-To:	cygwin AT cygwin DOT com
Mail-Followup-To:	cygwin AT cygwin DOT com
References:	<48821B9F DOT 6070907 AT cwilson DOT fastmail DOT fm> <20080719171235 DOT GO5675 AT calimero DOT vinschen DOT de> <488252B5 DOT 8000501 AT cwilson DOT fastmail DOT fm> <20080720122754 DOT GP5675 AT calimero DOT vinschen DOT de> <20080720134054 DOT GQ5675 AT calimero DOT vinschen DOT de> <4897AD74 DOT 8020606 AT cwilson DOT fastmail DOT fm> <20080807075806 DOT GA30629 AT calimero DOT vinschen DOT de> <489B13F4 DOT 4030002 AT cwilson DOT fastmail DOT fm> <20080807154823 DOT GI3806 AT calimero DOT vinschen DOT de> <489B20AC DOT 9080902 AT cwilson DOT fastmail DOT fm>
MIME-Version:	1.0
In-Reply-To:	<489B20AC.9080902@cwilson.fastmail.fm>
User-Agent:	Mutt/1.5.16 (2007-06-09)
Mailing-List:	contact cygwin-help AT cygwin DOT com; run by ezmlm
List-Id:	<cygwin.cygwin.com>
List-Unsubscribe:	<mailto:cygwin-unsubscribe-archive-cygwin=delorie DOT com AT cygwin DOT com>
List-Subscribe:	<mailto:cygwin-subscribe AT cygwin DOT com>
List-Archive:	<http://sourceware.org/ml/cygwin/>
List-Post:	<mailto:cygwin AT cygwin DOT com>
List-Help:	<mailto:cygwin-help AT cygwin DOT com>, <http://sourceware.org/ml/#faqs>
Sender:	cygwin-owner AT cygwin DOT com
Mail-Followup-To:	cygwin AT cygwin DOT com
Delivered-To:	mailing list cygwin AT cygwin DOT com

On Aug  7 12:19, Charles Wilson wrote:
> Corinna Vinschen wrote:
>> Well, hmm.  In theory, admins have backup/restore rights anyway.
>> However, I was just thinking that csih should get rid of points of
>> failure which are not entirely necessary, like the checks for denied
>> user rights.  If you think the test is necessary, just stick to it.
>
> Well, part of the purpose of the foo-config scripts is to diagnose -- if 
> the foo-config script succeeds without error, then one would expect that 
> the installed service will, in fact, operate correctly.  It's much worse to 
> have a user run ssh-host-config which /apparently/ succeeds, only to have 
> the service fail to start or operate correctly.
>
> So, I think /some/ version of this test should remain. However, if the 
> Administrators GROUP is not present in the /etc/passwd file -- that's not a 
> failure, so long as the Administrator and/or SYSTEM have the desired access 
> to the file (as well as the file's owner).
>
> So, I can see csih_get_system_and_admins_ids() reporting success if it 
> finds these three: ADMIN-GID, SYSTEM-GID, and SYSTEM-UID, and treating 
> ADMIN-UID (e.g. -544 in /etc/passwd) as a non-failure if missing.
>
> Then, csih_check_access (and all other users of ADMIN-UID) would 
> special-case against empty.
>
> We can require Administrators (-544) in /etc/group, and SYSTEM (-18) in 
> both /etc/group and /etc/passwd, right?

Yes.  I'm just wondering if we shouldn't check for the Admins group
only.  The token of the SYSTEM user always contains the Admins group and
the cyg_server (or whatever the name is) user is always (and should
always) be created as member of the admins group, too.  So, if I didn't
miss anything important, the check could be reduced to checking for the
admins group permissions.  Does that make sense?


Corinna

-- 
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Project Co-Leader          cygwin AT cygwin DOT com
Red Hat

--
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple
Problem reports:       http://cygwin.com/problems.html
Documentation:         http://cygwin.com/docs.html
FAQ:                   http://cygwin.com/faq/

- Raw text -