psql: Allow pg_read_all_stats to see database size in \l+
pg_database_size() allows access to users who have either CONNECT
privilege on the target database or privileges of the pg_read_all_stats
role. However, previously, psql's \l+ checked only for CONNECT,
so users with privileges of pg_read_all_stats still saw "No Access" for
databases they could not connect to.
Fix this by making \l+ also check
pg_has_role('pg_read_all_stats', 'USAGE'), matching
pg_database_size()'s permission rules.
For back branches, emit the pg_read_all_stats check only when
connected to PostgreSQL 10 or later, since earlier releases do not have
that predefined role.
Backpatch to all supported versions.
Author: Christoph Berg <myon@debian.org>
Reviewed-by: Álvaro Herrera <alvherre@kurilemu.de>
Reviewed-by: Fujii Masao <masao.fujii@gmail.com>
Discussion: https://postgr.es/m/amCo6qRmnfPVk4-V@msg.df7cb.de
Backpatch-through: 14
Branch
------
REL_19_STABLE
Details
-------
https://git.postgresql.org/pg/commitdiff/77aeca80249c9e640c811e80633a2e334a9320de
Modified Files
--------------
doc/src/sgml/ref/psql-ref.sgml | 5 +++--
src/bin/psql/describe.c | 4 ++++
2 files changed, 7 insertions(+), 2 deletions(-)
