From: Noah Misch <noah@leadboat.com>
To: pgsql-committers@lists.postgresql.org
Subject: pgsql: Fix pg_dump ACL minimization for PROPERTY GRAPH.
Date: Tue, 07 Jul 2026 16:53:12 +0000
Message-ID: <E1wh92m-0001XO-03@gemulon.postgresql.org> (raw)
Fix pg_dump ACL minimization for PROPERTY GRAPH.
Adding a GRANT caused pg_dump to emit a useless REVOKE + GRANT of owner
privileges, as seen in a dump of the regression database:
REVOKE ALL ON PROPERTY GRAPH graph_rls_schema.cabinet FROM nm;
GRANT ALL ON PROPERTY GRAPH graph_rls_schema.cabinet TO nm;
GRANT ALL ON PROPERTY GRAPH graph_rls_schema.cabinet TO PUBLIC;
For normal dumps, this has no functional consequences. For --no-owner
restores, the extra statements may fail or locate unrelated users of the
destination cluster.
The problem was pg_dump assuming NULL relacl implies acldefault('r'),
the default for TABLE. Fix by teaching acldefault() to retrieve the
PROPERTY GRAPH default ACL. So pg_dump can still dump from 19beta1, use
acldefault('g') for v20+ only. For v19, use a hard-coded snapshot of
the v19 default.
information_schema.pg_property_graph_privileges also misused
acldefault('r'), but its "c.prtype IN ('SELECT')" predicate compensated
for it. Switch to the new acldefault('g') for clarity. Bump catversion
since a new view won't work with old binaries. Back-patch to v19, which
introduced PROPERTY GRAPH.
Reviewed-by: Ashutosh Bapat <ashutosh.bapat.oss@gmail.com>
Reviewed-by: Robert Haas <robertmhaas@gmail.com>
Discussion: https://postgr.es/m/20260630023308.c7.noahmisch@microsoft.com
Backpatch-through: 19
Branch
------
master
Details
-------
https://git.postgresql.org/pg/commitdiff/592de8bd21e177229eeef51cb474ccfc2070c65d
Modified Files
--------------
src/backend/catalog/information_schema.sql | 2 +-
src/backend/utils/adt/acl.c | 3 +++
src/bin/pg_dump/pg_dump.c | 37 +++++++++++++++++++++++++++---
src/include/catalog/catversion.h | 2 +-
4 files changed, 39 insertions(+), 5 deletions(-)
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Reply to all the recipients using the --to and --cc options:
reply via email
To: pgsql-committers@postgresql.org
Cc: noah@leadboat.com, pgsql-committers@lists.postgresql.org
Subject: Re: pgsql: Fix pg_dump ACL minimization for PROPERTY GRAPH.
In-Reply-To: <E1wh92m-0001XO-03@gemulon.postgresql.org>
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
This inbox is served by DDX for PostgreSQL; see mirroring instructions
for how to clone and mirror all data and code used for this inbox