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Re: Non-superuser subscription owners

Amit Kapila <amit.kapila16@gmail.com>

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From: Amit Kapila <amit.kapila16@gmail.com>
To: Mark Dilger <mark.dilger@enterprisedb.com>
Cc: Jeff Davis <pgsql@j-davis.com>, Andrew Dunstan <andrew@dunslane.net>, PostgreSQL-development <pgsql-hackers@postgresql.org>, Robert Haas <robertmhaas@gmail.com>
Date: 2021-11-18T10:50:01Z
Lists: pgsql-hackers 
On Wed, Nov 17, 2021 at 11:56 PM Mark Dilger
<mark.dilger@enterprisedb.com> wrote:
>
> > On Nov 17, 2021, at 9:33 AM, Jeff Davis <pgsql@j-davis.com> wrote:
> >
>
> > This would not address the weirdness of the existing code where a
> > superuser loses their superuser privileges but still owns a
> > subscription. But perhaps we can solve that a different way, like just
> > performing a check when someone loses their superuser privileges that
> > they don't own any subscriptions.
>
> I gave that a slight amount of thought during the design of this patch, but didn't think we could refuse to revoke superuser on such a basis, and didn't see what we should do with the subscription other than have it continue to be owned by the recently-non-superuser.  If you have a better idea, we can discuss it, but to some degree I think that is also orthogonal to the purpose of this patch.  The only sense in which this patch depends on that issue is that this patch proposes that non-superuser subscription owners are already an issue, and therefore that this patch isn't creating a new issue, but rather making more sane something that already can happen.
>

Don't we want to close this gap irrespective of the other part of the
feature? I mean if we take out the part of your 0003 patch that checks
whether the current user has permission to perform a particular
operation on the target table then the gap related to the owner losing
superuser privileges should be addressed.

-- 
With Regards,
Amit Kapila.

Commits

Same data as JSON: GET /api/v1/messages/:b64id/commits the thread's linked commits as JSON, with link sources. API reference →

  1. Fix possible crash in tablesync worker.

  2. Display 'password_required' option for \dRs+ command.

  3. Restart the apply worker if the 'password_required' option is changed.

  4. Fix possible logical replication crash.

  5. Add new predefined role pg_create_subscription.

  6. Expand AclMode to 64 bits

  7. More cleanup of a2ab9c06ea.

  8. Respect permissions within logical replication.

  9. Improve table locking behavior in the face of current DDL.