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

From: Bill Davidsen
Date: Fri Feb 17 2006 - 16:34:09 EST


Daniel Barkalow wrote:

I don't think it needs to be a class, but I think that there should be a single place with a directory for each device that could be what you want, with a file that tells you if it is. That's why I was looking at block/; these things must be block devices, and there aren't an huge number of block devices.

I suppose "grep 1 /sys/block/*/device/dvdwriter" is just as good; I hadn't dug far enough in to realize that the reason I wasn't seeing anything informative in /sys/block/*/device/ was that I didn't have any devices with informative drivers, not that it was actually supposed to only have links to other things.

It would be nice to have one place to go to find burners, and to have the model information in that place. I would logically think that place is sysfs, and I know the kernel has the information because if I root through /proc/bus/usb and /proc/scsi/scsi, and /proc/ide/hd?/model I can eventually find out what the system has connected.

I not entirely sure about having classes other than cdrom, just because we already have CD, DVD, DVD-DL, and are about to add blue-ray and HD-DVD, so if I can tell that it's a removable device which can read CDs, the applications have a fighting chance to looking at the device to see what it is. As a human I would like the model information because the kernel has done the work, why should people have to chase it when it could be in one place?

--
-bill davidsen (davidsen@xxxxxxx)
"The secret to procrastination is to put things off until the
last possible moment - but no longer" -me
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