Tom Lane 35dd40d34c Improve tracking of role dependencies of pg_init_privs entries. Commit `534287403` invented SHARED_DEPENDENCY_INITACL entries in pg_shdepend, but installed them only for non-owner roles mentioned in a pg_init_privs entry. This turns out to be the wrong thing, because there is nothing to cue REASSIGN OWNED to go and update pg_init_privs entries when the object's ownership is reassigned. That leads to leaving dangling entries in pg_init_privs, as reported by Hannu Krosing. Instead, install INITACL entries for all roles mentioned in pg_init_privs entries (except pinned roles), and change ALTER OWNER to not touch them, just as it doesn't touch pg_init_privs entries. REASSIGN OWNED will now substitute the new owner OID for the old in pg_init_privs entries. This feels like perhaps not quite the right thing, since pg_init_privs ought to be a historical record of the state of affairs just after CREATE EXTENSION. However, it's hard to see what else to do, if we don't want to disallow dropping the object's original owner. In any case this is better than the previous do-nothing behavior, and we're unlikely to come up with a superior solution in time for v17. While here, tighten up some coding rules about how ACLs in pg_init_privs should never be null or empty. There's not any obvious reason to allow that, and perhaps asserting that it's not so will catch some bugs. (We were previously inconsistent on the point, with some code paths taking care not to store empty ACLs and others not.) This leaves recordExtensionInitPrivWorker not doing anything with its ownerId argument, but we'll deal with that separately. catversion bump forced because of change of expected contents of pg_shdepend when pg_init_privs entries exist. Discussion: https://postgr.es/m/CAMT0RQSVgv48G5GArUvOVhottWqZLrvC5wBzBa4HrUdXe9VRXw@mail.gmail.com		1 year ago
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README.md

PostgreSQL Database Management System

This directory contains the source code distribution of the PostgreSQL database management system.

PostgreSQL is an advanced object-relational database management system that supports an extended subset of the SQL standard, including transactions, foreign keys, subqueries, triggers, user-defined types and functions. This distribution also contains C language bindings.

General documentation about this version of PostgreSQL can be found at https://www.postgresql.org/docs/devel/. In particular, information about building PostgreSQL from the source code can be found at https://www.postgresql.org/docs/devel/installation.html.

The latest version of this software, and related software, may be obtained at https://www.postgresql.org/download/. For more information look at our web site located at https://www.postgresql.org/.