Subject: Re: [PATCH] sunrpc svc: be quieter
From: Trond Myklebust <Trond.Myklebust@netapp.com>
To: Daniel Drake <dsd@gentoo.org>
Cc: Jan Engelhardt <jengelh@linux01.gwdg.de>, neilb@cse.unsw.edu.au,
       nfs@lists.sourceforge.net, linux-kernel@vger.kernel.org,
       okir@monad.swb.de
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Organization: Network Appliance, Inc
Date: Tue, 14 Mar 2006 16:29:19 -0500
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On Tue, 2006-03-14 at 21:21 +0000, Daniel Drake wrote:
> Trond,
> 
> Trond Myklebust wrote:
> > They are probably trying to ping the server with a NULL procedure call
> > to test for service availability. We should allow that particular
> > usage...
> 
> Thanks, that sounds likely. Can you give some hints as to how a NULL 
> procedure call might appear? Would testing for prog==0 and/or proc==0 be 
> appropriate?

I can't see that authorising calls to prog==0 could ever be useful (what
would that mean?), but proc==0 is another matter: that is precisely the
NULL procedure call that I mentioned above.

Cheers,
  Trond
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