Re: CD writing in future Linux (stirring up a hornets' nest)

[Daniel Barkalow <barkalow@iabervon.org>]

On Sun, 12 Feb 2006, Greg KH wrote:

> On Mon, Feb 13, 2006 at 12:01:48AM -0500, Daniel Barkalow wrote:
> > sysfs doesn't do quite that level of categorization; if it did, cdrom_id 
> > would be unnecessary.
> 
> What?  cdrom_id queries the device directly to get some specific
> information about the device, much like any other type of device query
> (lspci, lsusb, etc.)
> 
> And yes, it would be nice if some of that information was also exported
> through sysfs, and as always, patches are gladly accpeted.

Are there guidelines on having a generic cdrom export information from its 
block interface, rather than through its bus? I'm not finding any 
documentation of sys/block/, aside from that it exists.

> > It would be nice if you could do 
> > "grep 1 /sys/block/*/burns_cds" and get a list of all the block devices in 
> > your system that burn cds. (You can currently get a list of all of the 
> > removable block devices in your system, but not much else.)
> 
> Well, I can see if they are disks or cdroms through sysfs quite easily,
> removable or not, so you do get more information than you expect.

Ah, okay, this is in the current -rcs. I was only looking at 2.6.15 (and 
before), which is too old.

	-Daniel
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