[OpenAFS] Ideas for finer grain set acl controls

[Jeffrey Altman]

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Michael:

Thank you for this proposal.  I think you have misnamed it.  What
you are proposing is not finer grained ACLs but ACL change control
policies.  The problem as Jim Rowan pointed out is that the ability
to change the modify the ACL is not the point of control.  What is
desired is the ability to restrict the permissions that can be granted
or restricted on a volume/directory/file irrespective of the ACL applied
on the object in question.

To address the use case properly there needs to be the ability to apply
additional sets of ACLs controlled entirely by the administrator.
Positive ACLs that give privileges that cannot be restricted and
negative ACLs that restrict privileges that cannot be granted.  These
would have to be enforced by the file server at access time.  This
ensures that changes in group membership do not bypass the administrator
set permissions.

Jeffrey Altman


Michael Meffie wrote:
> Hello,
> 
> Andrew, Tom, and I would like to discuss and solicit feedback on
> some ideas we have been considering to strengthen OpenAFS access
> controls, especially for sites which provide AFS service over the
> public internet.

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