Re: CVS commit: src/bin/dd

[Antti Kantee <pooka%cs.hut.fi@localhost>]

On Tue Nov 23 2010 at 18:41:21 +0000, David Laight wrote:
> On Tue, Nov 23, 2010 at 12:19:36AM +0200, Antti Kantee wrote:
> > > 
> > > Surely it would be more appropriate to make thye rump kernel directly
> > > forward some paths to the real kernel?
> > 
> > Can you explain how that could work?
> 
> First thoughts are something like the way /../ is used to 'escape'
> from the emulation root.
> But maybe just mount the real filesystem within the rump kernel?

The client may be on a different machine, so you'd have to, if not invent
a completely new protocol, at least include server side functionality
on the client and add some weird pingpong/adjust logic into the server.

> Making something work well enough to copy files is probably not that hard!

Adding a ton of special case code to copy files is extremely poor design!
Doubly so since the only reason is because you don't happen to like
some flags which bring 0 cost when not used.  If you don't like them,
don't use them.

Unless someone can actually name a *problem*, move along.