>This might be an FAQ, but I couldn't find it - there doesn't seem
>to be an rpc.lockd or equivalent in the standard distribution.  Is this
>an oversight - or is locking considered unnecessary?

It's definately a FAQ, but the answer is neither ...

No one's actually written one.  Sun released the spec for it, but my
understanding is that the actual implementation for SunOS doesn't agree with
the spec (If I'm wrong on this, please let me know).

--Ken