To: Joerg Schilling <schilling@fokus.fraunhofer.de>
Cc: greg@kroah.com, davidsen@tmr.com, linux-kernel@vger.kernel.org,
       axboe@suse.de
Subject: Re: CD writing in future Linux (stirring up a hornets' nest)
References: <Pine.LNX.4.61.0601251523330.31234@yvahk01.tjqt.qr>
	<20060125144543.GY4212@suse.de>
	<Pine.LNX.4.61.0601251606530.14438@yvahk01.tjqt.qr>
	<20060125153057.GG4212@suse.de> <43D7AF56.nailDFJ882IWI@burner>
	<20060125181847.b8ca4ceb.grundig@teleline.es>
	<20060125173127.GR4212@suse.de> <43D7C1DF.1070606@gmx.de>
	<878xt3rfjc.fsf@amaterasu.srvr.nix> <43ED005F.5060804@tmr.com>
	<20060210235654.GA22512@kroah.com> <43F0891E.nailKUSCGC52G@burner>
From: Nix <nix@esperi.org.uk>
Date: Mon, 13 Feb 2006 22:14:25 +0000
In-Reply-To: <43F0891E.nailKUSCGC52G@burner> (Joerg Schilling's message of
 "Mon, 13 Feb 2006 14:26:54 +0100")
Message-ID: <871wy6sy7y.fsf@hades.wkstn.nix>
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On Mon, 13 Feb 2006, Joerg Schilling stated:
> Greg KH <greg@kroah.com> wrote:
> 
>> On Fri, Feb 10, 2006 at 04:06:39PM -0500, Bill Davidsen wrote:
>> > 
>> > The kernel could provide a list of devices by category. It doesn't have 
>> > to name them, run scripts, give descriptions, or paint them blue. Just a 
>> > list of all block devices, tapes, by major/minor and category (ie. 
>> > block, optical, floppy) would give the application layer a chance to do 
>> > it's own interpretation.
>>
>> It does so today in sysfs, that is what it is there for.
> 
> Do you really whant libscg to open _every_ non-directory file under /sys?

Well, that would be overkill, but iterating across, say,
/sys/class/scsi_device seems like it would be a good idea.

(I doubt libscg would ever be interested in the stuff in most of the
other directories: things like /dev/mem are not SCSI devices and never
will be, and /sys/class/scsi_device contains *everything* Linux
considers a SCSI device, no matter what transport it is on, SATA and
all. However, I don't know if it handles IDE devices that you can SG_IO
to because I don't have any such here. Anyone know?)

-- 
`... follow the bouncing internment camps.' --- Peter da Silva
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