[nfsv4] Our different approaches to draft POSIX ACL support in NFSv4

[David Noveck <[e-mail]>]

I'd appreciate it if you took a look at what I've done to better support
draft POSIX ACLs in NFSv4.1 and let me know your thoughts.

There is a lot of work directed toward such support in acls-04.   It takes
a different approach than your earlier proposal to create two new acl
attributes in that it treats the issues within the framework of the
existing ACL model, albeit with some major conceptual restructuring (but
leaving the existing XDR pretty much intact.).

I am still open to approaches that strive to be more
draft-POSIX-ACL-oriented as discussed in my Appendix C.1 but feel those
will have to wait until NFSv4.2.   It would be good if we can discuss those
and  get enough agrrement to start implementation work on a common approach
to these issues.

Right now, I'm prototyping the draft-POSIX-ACL support described within
acls-04 and I have no immediate plans to try anything in Appendix C.
However, if you have plans for client implementation work for
draft-POSIX-ACL-related implementation work, I could look at doing some
v4.2 prototype to match.   I think we could do this before drafting a
proposed v4.2 extension.