Mailing-List: contact cygwin-help@cygwin.com; run by ezmlm List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner@cygwin.com Mail-Followup-To: cygwin@cygwin.com Delivered-To: mailing list cygwin@cygwin.com Delivered-To: corinna-cygwin@cygwin.com X-Originating-IP: [203.61.170.204] X-Originating-Email: [jasonwinter@hotmail.com] X-Sender: jasonwinter@hotmail.com From: "Jason Winter" To: cygwin@cygwin.com Cc: corinna-cygwin@cygwin.com Subject: read(): varblk tape records...(& Fix for : read()) Date: Tue, 02 Mar 2004 10:51:04 +0000 Mime-Version: 1.0 Content-Type: text/plain; format=flowed Message-ID: X-OriginalArrivalTime: 02 Mar 2004 10:51:04.0500 (UTC) FILETIME=[42666740:01C40044] Hi Corinna, Rereading the MSDN: Q161338 document I refered to before, Cygwin will need to use a minimum 128KB buffer when 'reading' data from tapes - the NT specification doesn't allow access to the 'last bytes' in a variable-block any other way. 128KB allows for any SCSI device under windows. (I noticed there was a memcpy for each ReadFile call - so I assume CygWin uses its own internal buffers, which may or maynot be large enough for tape support.) Jason. _________________________________________________________________ SEEK: Now with over 50,000 dream jobs! Click here http://ninemsn.seek.com.au/ -- 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/