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4e19081da8
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
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. PostgreSQL has many language interfaces, many of which are listed here: https://www.postgresql.org/download/ See the file INSTALL for instructions on how to build and install PostgreSQL. That file also lists supported operating systems and hardware platforms and contains information regarding any other software packages that are required to build or run the PostgreSQL system. Copyright and license information can be found in the file COPYRIGHT. A comprehensive documentation set is included in this distribution; it can be read as described in the installation instructions. The latest version of this software may be obtained at https://www.postgresql.org/download/. For more information look at our web site located at https://www.postgresql.org/.