X-Recipient:	archive-cygwin AT delorie DOT com
X-SWARE-Spam-Status:	No, hits=-2.5 required=5.0 tests=AWL,BAYES_00,SPF_PASS
X-Spam-Check-By:	sourceware.org
Message-ID:	<4AD9EB0E.80601@gmail.com>
Date:	Sat, 17 Oct 2009 17:04:30 +0100
From:	Dave Korn <dave DOT korn DOT cygwin AT googlemail DOT com>
User-Agent:	Thunderbird 2.0.0.17 (Windows/20080914)
MIME-Version:	1.0
To:	cygwin AT cygwin DOT com
Subject:	Re: How to deny directory-access for one dedicated user
References:	<hb2bil$o3s$1 AT ger DOT gmane DOT org> <416096c60910131027g3df5021ei9b15ab5067353ce0 AT mail DOT gmail DOT com> <4AD4D5FB DOT 4000906 AT gmail DOT com> <hbcd9m$l73$1 AT ger DOT gmane DOT org>
In-Reply-To:	<hbcd9m$l73$1@ger.gmane.org>
Mailing-List:	contact cygwin-help AT cygwin DOT com; run by ezmlm
List-Id:	<cygwin.cygwin.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

Matthias Meyer wrote:

> How to solve my goal?
> The user "backup" should backup all data but not certain directories.

  It cannot be done.  Your two requirements amount to:

1- I want the backup user to be able to access all files and directories
without restriction.
2- I want the backup user to be restricted from accessing certain files and
directories.

  As a matter of plain logic, these requirements just cannot both be satisfied
simultaneously in the same universe!  There is no means to give the backup
user privileges to access only-some-but-not-all of the files that the ACLs say
it should not have access to, because it would essentially require an entire
second level of ACLs on every file in the system to keep track of which files
the backup privilege gave access to and which files it did not.

    cheers,
      DaveK


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

- Raw text -