cmp: the port comparison server

[Carl Fredrik Hammar]

Hi,

I've been making some progress code-wise with libmob.  In particular I
have written a working server for secure comparison of ports.  And now
I would like to ask a few questions that have popped up in the duration.

You can get the code here: git://gitorious.org/hurd-cmp/hurd-cmp.git

The repository will probably evolve to a hold libmob and all of it's
supporting code.  I didn't really have a plan for it originally, I just
went for it.  This means that the individual commits aren't always neatly
divided, and the commit messages usually only have headlines.

The plan is for libmob to be part of the Hurd eventually, but I think
its best for it to have a standalone repository, as oppose to a clone of
Hurd's, until we reach a point where we can port existing translators
to use libmob.  Mostly so that I don't feel the need to follow commit
conventions and such, and continue to just ``go for it''.  Let me know
if this isn't a good idea.

Is the name `cmp' alright, or should it perhaps be expanded to `compare'?
I'm not sure how I feel about using a verb as a name for a server.

For now I use 1234000 as the subsystem number.  We don't need to finalize
this until cmp is included in the Hurd, right?

In the copyright notices I state that the program is part of the Hurd
and that the copyright is assigned to FSF.  But technically it isn't
part of the Hurd yet, I hope this isn't a problem.

I based the translator on password originally, since it also is a trivial
translator whose main interface isn't IO.  So currently I state this as
well in the relevant copyright notices.  But this code is similar to a
lot of other trivfs translators, has diverged, and it is only a small
portion of the actual functionality.  With that in mind is it really
necessary to state that in the copyright?  (It is also based on auth,
but here I believe attribution is in order.)

Other than that feel free to nitpick to your hearts' content!  :-)

Regards,
  Fredrik