Re: [Libtirpc-devel] [PATCH] Autofs configure fails to detect IPv6 when libtirpc is enabled

[Chuck Lever <chucklever@gmail.com>]

On Thu, Jul 28, 2011 at 10:33 AM, Ian Kent <ikent@redhat.com> wrote:
> On Thu, 2011-07-28 at 07:20 -0400, Chuck Lever wrote:
>> On Jul 27, 2011, at 10:26 PM, Ian Kent wrote:
>> >
>> > Umm ...
>> >
>> > Why is __rpcb_findaddr() declared in the public header files but not
>> > defined anywhere is the source?
>> >
>> > Why is __rpcb_findaddr_timed() defined in the source but not defined in
>> > the public header files?
>>
>> This version of libtirpc was split from the Sun version over a decade
>> ago when the code was immature.  So you're going to find this kind of
>> thing in many places.
>
> Yes, I was aware of that, but haven't paid enough attention to the doc.
>
>>
>> The TI-RPC API is defined in 816-1435.  You really shouldn't consider
>> using any of the interfaces defined in the headers but not in that
>> doc, as those are internal interfaces and can change.
>
> Ummm .. rpcb_getaddr() might be what I'm looking for, I'll look further.
>
>>
>> On the other hand, we have at least two important RPC-based
>> applications that can make use of this interface.  I wonder if it
>> makes sense to harden that API but leave it hidden, so apps external
>> to the library can depend on it.
>
> Yeah, but if I can achieve what I need without it that's the way I'll
> go. It looks like I might not be able to do what I want the way I want
> with ti-rpc but it is still too early to tell. It's also too early to
> tell if ti-rpc actually already does some or all of what I need already.
> Time will tell.
>
> One example of something I need is to control the timeout, not the
> timeout for interactions after the client is constructed but the timeout
> of the client construction itself, including any queries to rpcbind that
> may be needed (hence why I want to do that manually too).

Yes, nfs-utils does this too.  See support/nfs/rpc_socket.c.  It looks
a lot like what is done in autofs's lib/rpc_subs.c.

-- 
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