X-Spam-Check-By:	sourceware.org
From:	"Dave Korn" <dave DOT korn AT artimi DOT com>
To:	<cygwin AT cygwin DOT com>
References:	<46A4BC14 DOT 1050603 AT merl DOT com> <46A4ED4A DOT 9060303 AT merl DOT com>
Subject:	RE: 1.5.24: data corruption problem with popen and gzip on a text mounted filesystem
Date:	Mon, 23 Jul 2007 19:09:30 +0100
Message-ID:	<013c01c7cd54$9dabd6e0$2e08a8c0@CAM.ARTIMI.COM>
MIME-Version:	1.0
X-Mailer:	Microsoft Office Outlook 11
In-Reply-To:	<46A4ED4A.9060303@merl.com>
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 23 July 2007 19:03, Hugh Secker-Walker wrote:

> Interestingly, I had tried popen("gzip | dd of=outputfile", "wb") as a
> lower-level way to avoid what I guessed was a problem with gzip using
> the stdout.  The dd attempt didn't work.  This failure suggests to me
> that dd and gzip experience a similar problem in this popen() context,
> a problem that cat somehow avoids.


  Yeh, 'cat' is special: it absolutely guaranteed 100% always always always
uses bin mode, regardless of mount type, stdio mode, shell
direction/redirection/misdirection and indeed anything else at all.  It's your
get-out-of-jail-free card intended exactly for situations just like this one.

    cheers,
      DaveK
-- 
Can't think of a witty .sigline today....


--
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 -