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read(): varblk tape records...(& Fix for : read())
- From: "Jason Winter" <jasonwinter at hotmail dot com>
- To: cygwin at cygwin dot com
- Cc: corinna-cygwin at cygwin dot com
- Date: Tue, 02 Mar 2004 10:51:04 +0000
- Subject: read(): varblk tape records...(& Fix for : read())
- Bcc:
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.
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