X-Spam-Check-By:	sourceware.org
Message-ID:	<46977404.6070105@byu.net>
Date:	Fri, 13 Jul 2007 06:45:56 -0600
From:	Eric Blake <ebb9 AT byu DOT net>
User-Agent:	Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.4) Gecko/20070604 Thunderbird/2.0.0.4 Mnenhy/0.7.5.666
MIME-Version:	1.0
To:	cygwin AT cygwin DOT com
Subject:	Re: if [ -w branching: how to spot a locked USB stick
References:	<469715CF DOT 7090105 AT bonhard DOT uklinux DOT net>
In-Reply-To:	<469715CF.7090105@bonhard.uklinux.net>
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

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

According to fergus on 7/13/2007 12:03 AM:
> This question isn't strictly Cygwin, but I hope it's OK to ask it in the
> context of Cygwin on a portable device eg a CD or a usb mobile drive or
> memory stick: the bash command
> 
>     if [ -w /h ] ; then echo +W ;  else echo -W ; fi
> 
> tests a device located at /h (or /cygdrive/h) for write-ability: eg a
> USB memory stick will echo +W and a CD will echo -W. If the stick is
> locked, however, you still get +W.

Actually, this is a cygwin question.  Bash's [ command only reports what
access("/h",W_OK) tells it to report, so the real question here is why
cygwin1.dll thinks that a locked USB stick is writable.  And the answer
may be that either cygwin doesn't ask Windows the correct question (in
which case, http://cygwin.com/acronyms/#PTC), or that Windows lies (in
which case, there is no way to work around it).

- --
Don't work too hard, make some time for fun as well!

Eric Blake             ebb9 AT byu DOT net
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.5 (Cygwin)
Comment: Public key at home.comcast.net/~ericblake/eblake.gpg
Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org

iD8DBQFGl3QD84KuGfSFAYARAjK9AJ9gIwPPBay3s6gMvKLELJfN/lwMFwCgjZ3O
CvxDY7RiAs/hq1uwU9z2gTU=
=+qLs
-----END PGP SIGNATURE-----

--
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 -