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List: freebsd-hackers
Subject: Re: NFS & ACLS's ?
From: Kip Macy <kmacy () netapp ! com>
Date: 2002-12-30 17:54:17
[Download RAW message or body]
Citi has an OpenBSD NFSv4 client implementation. Is anyone working on porting
that to FreeBSD? From a cursory glance it appears to rely heavily on the
existing NFS infrastructure, how far have FreeBSD and OpenBSD developed away
from the 4.4 implementation?
http://www.citi.umich.edu/projects/nfsv4/openbsd/
-Kip
On Mon, 30 Dec 2002, Robert Watson wrote:
>
> On Fri, 27 Dec 2002, joe mcguckin wrote:
>
> > Are there any strange interactions between NFS and filesystems that are
> > not UFS? E.g. UFS2? Does NFS support new features that these fs's may
> > implement?
>
> NFS can represent many but not all of the services found in UFS1 and UFS2.
> Among things it doesn't support are the retrieval and manipulation of BSD
> file user flags, system flags, extended attributes, and access control
> lists (ACLs). However, NFSv3 does correctly handle enforcement with these
> features because clients rely on the server to evaluate protections on
> file system objects using an ACCESS RPC. NFS2 evaluates protections on
> the client (if I recall correctly) so may not behave properly. There are
> RPC extensions to NFSv3 to retrieve and manipulate ACLs on Solaris, IRIX,
> et al, but we don't currently implement those extensions. Likewise, NFSv4
> supports ACL management, but we don't yet implement NFSv4. It shouldn't
> be too hard to dig up information on the NFSv3 ACL RPC extensions and
> implement them on FreeBSD 5, since the semantics of our ACLs are highly
> compatible with Solaris and IRIX.
>
> Robert N M Watson FreeBSD Core Team, TrustedBSD Projects
> robert@fledge.watson.org Network Associates Laboratories
>
>
>
>
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