Date: Wed, 15 Feb 2006 09:07:40 -0800
From: Greg KH <greg@kroah.com>
To: Jan Engelhardt <jengelh@linux01.gwdg.de>
Cc: Joerg Schilling <schilling@fokus.fraunhofer.de>, davidsen@tmr.com,
       nix@esperi.org.uk, linux-kernel@vger.kernel.org, axboe@suse.de
Subject: Re: CD writing in future Linux (stirring up a hornets' nest)
Message-ID: <20060215170740.GE1546@kroah.com>
References: <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> <20060213154921.GA22597@kroah.com> <Pine.LNX.4.61.0602151643470.25885@yvahk01.tjqt.qr>
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On Wed, Feb 15, 2006 at 04:44:38PM +0100, Jan Engelhardt wrote:
> >
> >Of course not.  Here's one line of bash that gets you the major:minor
> >file of every block device in the system:
> >	block_devices="$(echo /sys/block/*/dev /sys/block/*/*/dev)"
> >
> When was that added? /sys/block/hdc/device/ only has "power", "block", 
> "bus" and "driver" here on a 2.6.13-rc3.

True, that's why my above "echo" didn't point to "device" but "dev".
"device" is a symlink to the device that the block device is attached
to.  "dev" is the major:minor number of this specific block device.

Hope this helps,

greg k-h
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