From: Joerg Schilling <schilling@fokus.fraunhofer.de>
Date: Wed, 25 Jan 2006 18:18:23 +0100
To: mrmacman_g4@mac.com, matthias.andree@gmx.de
Cc: schilling@fokus.fraunhofer.de, rlrevell@joe-job.com,
       linux-kernel@vger.kernel.org, acahalan@gmail.com
Subject: Re: CD writing in future Linux (stirring up a hornets' nest)
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Matthias Andree <matthias.andree@gmx.de> wrote:

> > Irrelevant to the discussion at hand, we are talking only about linux 
> > and what should be done on linux.
>
> Well, cdrecord relies on libscg, so in effect most of the portability code
> that is affected is in libscg; some of the real-time code however is
> specific to cdrecord.

This is correct, as (looking at other programs from cdrtools) cdrecord is the 
only program that needs realtime scheduling.


> So I'll repeat my question: is there anything that SG_IO to /dev/hd* (via
> ide-cd) cannot do that it can do via /dev/sg*? Device enumeration doesn't count.

But device enumeration is the central point when implementing -scanbus.

Note that all OS that I am aware of internally use a device enumeration scheme 
that is close to what libscg uses. This ie even true for Linux. If Linux did not
hide this information for /dev/hd* based fd's, I could implement an abstraction
layer.....

J?rg

-- 
 EMail:joerg@schily.isdn.cs.tu-berlin.de (home) J?rg Schilling D-13353 Berlin
       js@cs.tu-berlin.de                (uni)  
       schilling@fokus.fraunhofer.de     (work) Blog: http://schily.blogspot.com/
 URL:  http://cdrecord.berlios.de/old/private/ ftp://ftp.berlios.de/pub/schily
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