Date: Mon, 19 May 1997 13:41:59 -0400 From: Charles Henrich <henrich@crh.cl.msu.edu> To: Joerg Wunsch <joerg_wunsch@uriah.heep.sax.de> Cc: freebsd-scsi@FreeBSD.ORG Subject: Re: scsi library interface Message-ID: <19970519134159.60193@crh.cl.msu.edu> In-Reply-To: <19970519174516.AT53845@uriah.heep.sax.de>; from J Wunsch on Mon, May 19, 1997 at 05:45:16PM %2B0200 References: <19970518184034.10726@crh.cl.msu.edu> <19970519103618.LH45116@uriah.heep.sax.de> <19970519110533.07999@crh.cl.msu.edu> <19970519174516.AT53845@uriah.heep.sax.de>
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On the subject of Re: scsi library interface, J Wunsch stated:
> Needless to say, no userland program is meant to issue READ or WRITE
> commands to a CD-ROM drive at all... I would be much more happy if
> you would think about integrating all this into the type drivers.
> I've already exchanged a few ideas with Jean-Marc Zucchoni lately, who
> became very active on the CD-R front. Reading and writing devices in
> userland when there's a real device driver for it violates the
> layering principles.
The only problem is, you need to code different mechanisms for reading this
kind of data for each CD-ROM manufacturer out there. Adding these tables for
this special end case seems pointless, and you also make your life much more
painful for some mechs who require switching states depending on if reading
CDDA or not.
-Crh
Charles Henrich Michigan State University henrich@msu.edu
http://pilot.msu.edu/~henrich
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