Re: [v9.2] SECURITY LABEL on shared database object

On Mon, Jun 13, 2011 at 1:40 PM, Kohei KaiGai <kaigai@kaigai.gr.jp> wrote:
> 2011/6/13 Robert Haas <robertmhaas@gmail.com>:
>> On Mon, Jun 13, 2011 at 12:24 PM, Kohei KaiGai <kaigai@kaigai.gr.jp> wrote:
>>> The attached patch is an update revision of security label support
>>> for shared database objects.
>>
>> I'm kind of unexcited about this whole idea.  Adding a shared catalog
>> for a feature that's only of interest to a small percentage of our
>> user population seems unfortunate.
>>
>> Are there any other possible approaches to this problem?
>>
> If unexcited about the new shared catalog, one possible idea
> is to add a new field to pg_database, pg_tablespace and
> pg_authid to store security labels?
>
> The reason why we had pg_seclabel is to avoid massive amount
> of modifications to system catalog. But only 3 catalogs to be
> modified to support security label on shared object.

I guess maybe my real question here is - what do you plan to do with
those security labels, from a security perspective?  For example:
roles.  The user's security contect AIUI is passed over from the
remote side; his DAC role doesn't even enter into it from a MAC
perspective.  Or does it?

--
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company