Re: [9fans] Why do we need syspipe() ?

["Roman V. Shaposhnik" <rvs@sun.com>]

On Thu, 2009-01-08 at 18:48 -0500, erik quanstrom wrote:
> >> > Although in the alternative universe I can see how implementing #X 
> >> > as *channels* capable of 9P messages, could enable things like mounting
> >> > them on external hosts and letting these hosts manipulate physical
> >> > devices attached to yours (I agree that remote mounting of the kernel
> >> > services, which do not correspond to physical devices, is less useful).
> >> > Just like exporting my *local* /srv can be a useful things at times.
> >> 
> >> you mean like this?
> >> 	import -E ssl minooka.coraid.com '#æ' /n/minookaæ
> > 
> > Well, I tend not to like the proliferation of exportfs', but may
> > be in this case it is actually better that what I had in mind.
> 
> why?

Multiplexing. If devices exposed channel interface, and got
exported there would be no kernel protecting from clients
sending random sequences of 9P messages (on a single host
you can't mount a channel and then continue reading/writing
9P messages over it).

So the way devices are right now, actually seems to be better
compared to what I have in mind. Sorry for the noise.

Thanks,
Roman.