Re: [PROPOSAL] Extended attributes for Posix security extensions

[Stephen C. Tweedie]

Hi,

On Sun, Oct 29, 2000 at 03:58:28PM +0100, Andreas Gruenbacher wrote:
> On Sun, 29 Oct 2000, Stephen C. Tweedie wrote:
> 
> > > NFSv4 indeed specifies yet another variant of ACLs.
> > 
> > Yep.  In fact, it defines a richer environment than POSIX.  However, I
> > _think_ that for any POSIX ACL, you can define an NFSv4 list which is
> > equivalent in all details (although the reverse is definitely not
> > true). 
> 
> NFSv4 defines additional permissions.
> 
> Unless I've missed something again, there's no mapping for Posix ACL_MASK
> entries, though.

Hmm --- given any POSIX ACL you can define an NFSv4 ACL which
gives the same permissions, even including ACL_MASK, but you probably
can't make one which has the same semantics on subsequent chmod()
modifications of the group permissions bits.

--Stephen
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