[klibc] mkrootdev utility

[H. Peter Anvin]

Olaf Hering wrote:
>  On Tue, Apr 11, Aaron Griffin wrote:
> 
> 
>> +        return create_dev("/dev/root", rootdev);
> 
> That always bothered me. Cant you give it just the kernel name?
> 

If there is a name known to the kernel (rather, kinit), this can be 
done, but if you specify "root=302" or something like that, that would 
at the very least mean searching through the entire sysfs in the hope of 
finding a name.

I'm not philosophically opposed to changing it, but I'm a bit scared of 
doing anything that could cause incompatibilities with the 2^n boot 
setups out there until klibc has been merged.  Maybe that's cargo cult 
programming, but it seems safer to consider that change later.

	-hpa