Re: [PROPOSAL] Extended attributes for Posix security extensions

[Stephen C. Tweedie]

Hi,

On Tue, Oct 24, 2000 at 06:52:44PM +0200, Ragnar Kj?rstad wrote:

> It doesn't help the user that he can use the same interface to store
> data in multiple filesystems if totally different things happen.
> 
> How can an application store data in extended attributes without knowing
> if it's inherited or not?
> 
> At the very least the user need to know - of course even better if he
> can choose.

That's part the point of the attribute families: you get to define the
semantics per-family, and if you have incompatible implementations,
they can define different families.  That way, a flexible
implementation can even choose its functionality depending on what
family the user is using, but a simple implementation can cleanly
reject requests for semantics which it can't implement.

That works for ACLs, but should work for other attributes too.

--Stephen
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