Re: (Semi-random) thoughts on device tree structure and devfs

[Steven Bellovin <smb%cs.columbia.edu@localhost>]

On Mar 9, 2010, at 10:25 AM, Joerg Sonnenberger wrote:

> On Tue, Mar 09, 2010 at 08:09:57AM +0000, Iain Hibbert wrote:
>> I have never used wedges but, for the disk case, would it not be better to
>> make a method of configuring a dk in advance, so that whenever a disk
>> appears with the correct parameters it will already be mapped to the dk
>> you expect? (perhaps a daemon could handle it) Then you know that /dev/dk3
>> is your USB stick and will never be anything else..
> 
> I don't think it has to be or should be in the kernel. Basically,
> /dev/dk3 gets created or is used by the kernel. A daemon is notified
> (*cough* udevd) and that scans the device properties, finds the UUID and
> creates /dev/uuid/2345324523453245. It also finds the label and creates
> /dev/label/my-usb-stick. The latter is what you put in /etc/fstab.

I agree completely.  In fact, we could do that now, with a simple rc.d script.

                --Steve Bellovin, http://www.cs.columbia.edu/~smb