linux-kernel - Re: [NFS] [PATCH 019 of 19] knfsd: Register all RPC programs with portmapper by default

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Date:	Fri, 01 Sep 2006 12:34:52 -0400
From:	Peter Staubach <staubach@...hat.com>
To:	Chuck Lever <chucklever@...il.com>
CC:	Olaf Kirch <okir@...e.de>, NeilBrown <neilb@...e.de>,
	Andrew Morton <akpm@...l.org>, nfs@...ts.sourceforge.net,
	linux-kernel@...r.kernel.org
Subject: Re: [NFS] [PATCH 019 of 19] knfsd: Register all RPC programs with
 portmapper by default

Chuck Lever wrote:
> On 9/1/06, Olaf Kirch <okir@...e.de> wrote:
>   
>> On Fri, Sep 01, 2006 at 11:31:25AM -0400, Chuck Lever wrote:
>>     
>>> I don't like this.  The idea that multiple RPC services are listening
>>> on the same port is a total hack.  What other service might use this
>>> besides NFSACL?
>>>       
>> Why do you consider this a hack? I have always felt that librpc requiring
>> you to open separate ports for every program you register was a poor
>> design. The RPC header contains the program number, and the RPC code
>> is fully capable of demuxing incoming requests. So I do not think it is
>> a hack at all.
>>
>> And yes, Solaris NFSACL resides on 2049 too.
>>     
>
> I meant "Does Solaris advertise NFSACL on 2049 via the portmapper?"

Yes, the Solaris server registers the NFS_ACL service with the rpcbind
daemon.  And, the NFS_ACL protocol is defined to use port 2049.  Please
see nfs_acl.x (/usr/include/rpcsvc/nfs_acl.x) for details.

       ps
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