Re: [PATCH 0/2] Support for posix ACLs in fuse

[ebiederm@xmission.com (Eric W. Biederman)]

Miklos Szeredi <miklos@szeredi.hu> writes:
> 3) How will richacl's fit into this?

As best as I can read the situation richacl support has not yet been
merged into Linux yet.

Last I was following the richacl discussion there were some fundamental
features of richacls that were incompatible with the expectations of
ordinary linux applications.  The negative acls if my memory serves.
That raised some concern if richacls could ever be safely be merged.

As I recall Christoph Hellwig was a primary on raising those concerns,
and when I read those arguments they seemed persuasive to me.

That said richacls (if they happen) will communicate to the filesystem
primarily with extended attributes just like the acls, and flag will
need to be added to the protocol to enable richacl support in the kernel
if and when that exists.

Or in short richacls are the same tune but different dance partners.

Eric