X-Recipient: archive-cygwin AT delorie DOT com
X-SWARE-Spam-Status: No, hits=-10.3 required=5.0	tests=AWL,BAYES_00,KHOP_PGP_SIGNED,KHOP_RCVD_UNTRUST,KHOP_THREADED,RCVD_IN_DNSWL_HI,RCVD_IN_HOSTKARMA_W,SPF_HELO_PASS,T_RP_MATCHES_RCVD
X-Spam-Check-By: sourceware.org
Message-ID: <4FEA5161.6010503@redhat.com>
Date: Tue, 26 Jun 2012 18:18:41 -0600
From: Eric Blake <eblake AT redhat DOT com>
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:13.0) Gecko/20120615 Thunderbird/13.0.1
MIME-Version: 1.0
To: Paul Eggert <eggert AT cs DOT ucla DOT edu>
CC: bug-gnulib <bug-gnulib AT gnu DOT org>, cygwin <cygwin AT cygwin DOT com>
Subject: Re: [PATCH] root-uid: new module
References: <4FEA4A72 DOT 8090003 AT cs DOT ucla DOT edu> <4FEA4D53 DOT 3090409 AT redhat DOT com> <4FEA4FDB DOT 5030105 AT cs DOT ucla DOT edu>
In-Reply-To: <4FEA4FDB.5030105@cs.ucla.edu>
OpenPGP: url=http://people.redhat.com/eblake/eblake.gpg
Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="------------enig00113B10554D298DEA045234"
X-IsSubscribed: yes
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

--------------enig00113B10554D298DEA045234
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: quoted-printable

[adding cygwin]

On 06/26/2012 06:12 PM, Paul Eggert wrote:
> On 06/26/2012 05:01 PM, Eric Blake wrote:
>> Rather than forcing comparison to a single value, would it be better to
>> have a function is_privileged_uid(euid)?
>=20
> Yes, that sounds better.  I don't use Cygwin, though, so
> I'm not qualified to write that.

Broadening the question, does the cygwin community have advice on the
best implementation of a function that returns true if the argument is a
uid with full privileges (for example, if the uid is a member of the
Administrator group, and can therefore read files in spite of chown()
disabling all the read permissions)?  We're trying to improve gnulib
(and therefore coreutils, findutils, tar, ...) to use an
implementation-appropriate check rather than the more traditional
hard-coded check of uid=3D=3D0, since that doesn't quite work everywhere.

--=20
Eric Blake   eblake AT redhat DOT com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org




--------------enig00113B10554D298DEA045234
Content-Type: application/pgp-signature; name="signature.asc"
Content-Description: OpenPGP digital signature
Content-Disposition: attachment; filename="signature.asc"

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.12 (GNU/Linux)
Comment: Public key at http://people.redhat.com/eblake/eblake.gpg
Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/

iQEcBAEBCAAGBQJP6lFhAAoJEKeha0olJ0Nq5q8H/3qB0INCIaIRkJfhJdLwaHC5
lzFyy0gdZWtgpbnX0JP6K/5zy9V1XpRF8KI+V3RETccJGn3X21LKqOmcLHsy2zLz
JXCA9Ia8mVZpQ/lbgk/7x4VeORdevYAy3zFrJf3QX0r/Fbr8uizISl31Wr4xISob
uQd3qH4r6SrcujWBxzhlh2YSNusX9c7lB8R4kxmA1+vdUDCj82EYnXf0EZHH8oBu
xe4qFHo2dU6B074L6oG+vp45tloJ2PzkLtIBBoLLCffLyb/epxITCAvi16RH1wyf
5v/Xyz0EXB3K/XdGjd+KmDQj7FnvAqT6Eb1vIHUM4usDHfpIpiihKbdou6GT4hA=
=B81T
-----END PGP SIGNATURE-----

--------------enig00113B10554D298DEA045234--