From: Olaf Kirch <okir@suse.de>
Subject: Re: auto-discovery of exports?
Date: Thu, 8 Apr 2004 10:55:57 +0200
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To: Greg Banks <gnb@melbourne.sgi.com>
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On Thu, Apr 08, 2004 at 05:07:25PM +1000, Greg Banks wrote:
> The ones based on modern ONC code, like Solaris and IRIX, explicitly
> allow NULL calls before doing their fancy checks based on program numbers.
> I'd be interested to hear of actual counterexamples.

Wietse Venema's portmapper which I think all Linux distributors
use has this:

    if (prog == PMAPPROG || prog == NFSPROG || prog == YPXPROG ||
        (prog == MOUNTPROG && aproc == MOUNTPROC_MNT) ||
        (prog == YPPROG && aproc != YPPROC_DOMAIN_NONACK)) {
        log_no_forward(addr, proc, prog);
        return (FALSE);
    }

so you're right, calling the MOUNT NULL procedure via PMAP_CALL
should work. You could even broadcast a DUMP call...

Calling NFS NULL will not work, though.

Olaf
-- 
Olaf Kirch     |  The Hardware Gods hate me.
okir@suse.de   |
---------------+ 


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