[iyonix-support] Re: Bugs in SCSIFS?

Hi

Martin Wuerthner wrote:

In message <1182429924.467a72e4bb4e8@xxxxxxxxxxxxxxxxx>
          davehigton@xxxxxxxxxxxxx wrote:


It seems we're so nearly there.  I assume that DOSFS must interface
to FileSwitch, since the way a DOS drive is operated bears little
resemblance to FileCore.
Yes once DOSFS has claimed the partition, FileCore is no longer involved. FileSwitch calls DOSFS via the image file mechanism passing the file handle of the partition file and DOSFS reads data from this file handle via standard OS calls. 


So it must already do all we want, except
that it can't operate on big enough devices.
True, but it is well possible that it relies on 32-bit byte addressing a lot internally, which is limited to 4GB, so it might not be straightforward to change it.
indeed internally DOSFS uses a C int to handle the byte address, hence is limited to 32bit. Changes to extend this are not lunar science.. they just haven't yet been done. 

John


Martin


--
John Ballance        jwb@xxxxxxxxxx
Free Utilities? -> http://www.rosery.net
http://www.johnballance.co.uk
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