Re: udev and the kernel's idea of a device

[Greg KH <greg@kroah.com>]

On Tue, Apr 06, 2004 at 04:49:24PM -0400, Bill Nottingham wrote:
> > > > As it is very simple
> > > > to translate from the kernel device name to the real /dev name at any
> > > > point in time using udevinfo, why is that not sufficient?
> > > 
> > > Requires integrating udevinfo into various random userland apps...
> > > it's certainly doable, but it just doesn't seem very clean.
> > 
> > I agree, but what random userland apps are you talking about?
> 
> Off the top of my head, iostat, cdrom capability checkers, fbset
> and friends, etc. But, in the long run, see below.

But those apps want to know the /dev node, right?  They don't get errors
back from the kernel with the kernel device name (well, I don't know
what iostat uses, but I think the later version use sysfs...).  Things
like fbset want to know where the fb device is at in /dev, not the other
way around.

Or am I confused too?

> > Can you think of a cleaner suggestion?
> 
> Drill HAL throughout the entire OS. :)

Yeah, that's the "correct" solution, but until then I imagine you need
to get real work done :)

thanks,

greg k-h


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