On 03/12/2014 02:09 PM, Josh Berkus wrote:
On 03/12/2014 12:22 AM, Magnus Hagander wrote:
On Mar 12, 2014 1:46 AM, "Josh Berkus" <j...@agliodbs.com> wrote:
Yeah, what we really need is encapsulated per-DB users and local
superusers.  I think every agrees that this is the goal, but nobody
wants to put in the work to implement a generalized solution.

Encapsulated would probably be the doable part. But local superuser? Given
that a superuser can load and run binaries, how would you propose you
restrict that superuser from doing anything they want? And if you don't
need that functionality, then hows it really different from being the
database owner?
Well, if you really want my "I want a pony" list:

Local superusers (maybe this concept needs another name) would be able
to do the following things in a *single* database:

1 change permissions for other users on that database and its objects
2 load extensions from a predefined .so directory / list
3 create/modify untrusted language functions
4 create per-database users and change their settings
5 change database settings (SET stuff)
6 NOT change their own user settings
7 NOT change any global users
8 NOT run SET PERSISTENT or other commands with global effect

Item 3 gives away the store. AFAIK Amazon doesn't load untrusted languages, period.



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