Re: [NFS] [PATCH] nfs4, special files, and set/listxattr asymmetry

["J. Bruce Fields" <bfields@fieldses.org>]

On Tue, Jan 08, 2008 at 05:05:35PM -0500, Dave Quigley wrote:
> xattrs are only the local Linux representation of a MAC attribute. For
> the purpose of interoperability we can't assume xattrs considering NFSv4
> doesn't contain them in the specification. We considered the named
> attributes but they fall short concerning file labeling. Instead we are
> working on adding another recommended attribute to the NFSv4
> specification to handle an opaque security label. For your purposes you
> can continue to think of them as extended attributes since that is the
> interface that Linux has chosen for security attributes. However, I
> don't see this functionality making its way into Linux any time soon
> since it will require a change to the NFSv4 standard and they are
> wrapping up the NFSv4.1 specification. I can't say how long it will be
> before NFSv4.2 starts up. Maybe future events will cause that to happen
> sooner than later.

I would hope that the existance of a good, well-documented
implementation is the important thing, and would make things go more
quickly.

--b.

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