Re: [nfsv4] Re: NFSv4 ACL and POSIX interaction / mask, draft-ietf-nfsv4-acls-00 not ready

[Andreas Gruenbacher <agruen@suse.de>]

On Tuesday, 11. July 2006 02:28, J. Bruce Fields wrote:
> On Tue, Jul 11, 2006 at 02:01:42AM +0200, Andreas Gruenbacher wrote:
> > The issue is that you sometimes want to give the owning group fewer
> > perissions than say, user:bfields in the above example. You can only do
> > that by separating the owning group and mask permissions.
> >
> > For this aspect of the problem (actually for all aspects except for those
> > that the DENY entries cause because they are sometimes difficult or
> > impossible to uniquely tell from other "ordinary" entries) it is totally
> > irrelevant whether the mask is represented as a mask:: acl entry as in
> > POSIX ACLs, as a series of DENY ACL entries, or as NFSv4 attributes.
> >
> > (POSIX ACLs only need one mask entry because they can never grant more
> > than rwx permissions anyway, and so the owner and other permissions are
> > always identical to the owner and other file mode permission bits. That's
> > no longer true with POSIX ACLs, and so there we also need mask entries
> > for the owner and for others.)
>
> So you need this if and only if you want to be able to set OWNER@
> permissions other than read, write, or execute, *and* want to be able to
> recover from a chmod?

I think I have answered this exhaustively in:

Subject: Re: [NFS] [nfsv4] Re: NFSv4 ACL and POSIX interaction / mask,
         draft-ietf-nfsv4-acls-00 not ready
Date: Tue, 11 Jul 2006 02:44:30 +0200
Message-Id: <200607110244.31010.agruen@suse.de>

Andreas

-- 
Andreas Gruenbacher <agruen@suse.de>
Novell / SUSE Labs


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