8000 Reintroduce MAINTAIN privilege and pg_maintain predefined role. · postgrespro/postgres@ecb0fd3 · GitHub
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Reintroduce MAINTAIN privilege and pg_maintain predefined role.
Roles with MAINTAIN on a relation may run VACUUM, ANALYZE, REINDEX, REFRESH MATERIALIZE VIEW, CLUSTER, and LOCK TABLE on the relation. Roles with privileges of pg_maintain may run those same commands on all relations. This was previously committed for v16, but it was reverted in commit 151c22d due to concerns about search_path tricks that could be used to escalate privileges to the table owner. Commits 2af07e2, 59825d1, and c7ea3f4 resolved these concerns by restricting search_path when running maintenance commands. Bumps catversion. Reviewed-by: Jeff Davis Discussion: https://postgr.es/m/20240305161235.GA3478007%40nathanxps13
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‎doc/src/sgml/ddl.sgml

Lines changed: 26 additions & 9 deletions
Original file line numberDiff line numberDiff line change
@@ -1868,8 +1868,8 @@ ALTER TABLE products RENAME TO items;
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<literal>INSERT</literal>, <literal>UPDATE</literal>, <literal>DELETE</literal>,
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<literal>TRUNCATE</literal>, <literal>REFERENCES</literal>, <literal>TRIGGER</literal>,
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<literal>CREATE</literal>, <literal>CONNECT</literal>, <literal>TEMPORARY</literal>,
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<literal>EXECUTE</literal>, <literal>USAGE</literal>, <literal>SET</literal>
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and <literal>ALTER SYSTEM</literal>.
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<literal>EXECUTE</literal>, <literal>USAGE</literal>, <literal>SET</literal>,
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<literal>ALTER SYSTEM</literal>, and <literal>MAINTAIN</literal>.
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The privileges applicable to a particular
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object vary depending on the object's type (table, function, etc.).
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More detail about the meanings of these privileges appears below.
@@ -2160,7 +2160,19 @@ REVOKE ALL ON accounts FROM PUBLIC;
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</para>
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</listitem>
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</varlistentry>
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</variablelist>
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<varlistentry id="ddl-priv-maintain">
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<term><literal>MAINTAIN</literal></term>
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<listitem>
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<para>
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Allows <command>VACUUM</command>, <command>ANALYZE</command>,
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<command>CLUSTER</command>, <command>REFRESH MATERIALIZED VIEW</command>,
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<command>REINDEX</command>, and <command>LOCK TABLE</command> on a
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relation.
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</para>
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</listitem>
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</varlistentry>
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</variablelist>
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The privileges required by other commands are listed on the
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reference page of the respective command.
@@ -2309,6 +2321,11 @@ REVOKE ALL ON accounts FROM PUBLIC;
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<entry><literal>A</literal></entry>
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<entry><literal>PARAMETER</literal></entry>
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</row>
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<row>
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<entry><literal>MAINTAIN</literal></entry>
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<entry><literal>m</literal></entry>
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<entry><literal>TABLE</literal></entry>
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</row>
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</tbody>
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</tgroup>
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</table>
@@ -2399,7 +2416,7 @@ REVOKE ALL ON accounts FROM PUBLIC;
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</row>
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<row>
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<entry><literal>TABLE</literal> (and table-like objects)</entry>
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<entry><literal>arwdDxt</literal></entry>
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<entry><literal>arwdDxtm</literal></entry>
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<entry>none</entry>
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<entry><literal>\dp</literal></entry>
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</row>
@@ -2465,11 +2482,11 @@ GRANT SELECT (col1), UPDATE (col1) ON mytable TO miriam_rw;
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<programlisting>
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=&gt; \dp mytable
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Access privileges
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Schema | Name | Type | Access privileges | Column privileges | Policies
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--------+---------+-------+-----------------------+-----------------------+----------
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public | mytable | table | miriam=arwdDxt/miriam+| col1: +|
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| | | =r/miriam +| miriam_rw=rw/miriam |
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| | | admin=arw/miriam | |
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Schema | Name | Type | Access privileges | Column privileges | Policies
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--------+---------+-------+------------------------+-----------------------+----------
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public | mytable | table | miriam=arwdDxtm/miriam+| col1: +|
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| | | =r/miriam +| miriam_rw=rw/miriam |
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| | | admin=arw/miriam | |
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(1 row)
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</programlisting>
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</para>

‎doc/src/sgml/func.sgml

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -24232,7 +24232,7 @@ SELECT has_function_privilege('joeuser', 'myfunc(int, text)', 'execute');
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are <literal>SELECT</literal>, <literal>INSERT</literal>,
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<literal>UPDATE</literal>, <literal>DELETE</literal>,
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<literal>TRUNCATE</literal>, <literal>REFERENCES</literal>,
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and <literal>TRIGGER</literal>.
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<literal>TRIGGER</literal>, and <literal>MAINTAIN</literal>.
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</para></entry>
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</row>
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‎doc/src/sgml/ref/alter_default_privileges.sgml

Lines changed: 2 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -28,7 +28,7 @@ ALTER DEFAULT PRIVILEGES
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<phrase>where <replaceable class="parameter">abbreviated_grant_or_revoke</replaceable> is one of:</phrase>
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31-
GRANT { { SELECT | INSERT | UPDATE | DELETE | TRUNCATE | REFERENCES | TRIGGER }
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GRANT { { SELECT | INSERT | UPDATE | DELETE | TRUNCATE | REFERENCES | TRIGGER | MAINTAIN }
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[, ...] | ALL [ PRIVILEGES ] }
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ON TABLES
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TO { [ GROUP ] <replaceable class="parameter">role_name</replaceable> | PUBLIC } [, ...] [ WITH GRANT OPTION ]
@@ -51,7 +51,7 @@ GRANT { USAGE | CREATE | ALL [ PRIVILEGES ] }
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TO { [ GROUP ] <replaceable class="parameter">role_name</replaceable> | PUBLIC } [, ...] [ WITH GRANT OPTION ]
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REVOKE [ GRANT OPTION FOR ]
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{ { SELECT | INSERT | UPDATE | DELETE | TRUNCATE | REFERENCES | TRIGGER }
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{ { SELECT | INSERT | UPDATE | DELETE | TRUNCATE | REFERENCES | TRIGGER | MAINTAIN }
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[, ...] | ALL [ PRIVILEGES ] }
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ON TABLES
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FROM { [ GROUP ] <replaceable class="parameter">role_name</replaceable> | PUBLIC } [, ...]

‎doc/src/sgml/ref/analyze.sgml

Lines changed: 2 additions & 4 deletions
Original file line numberDiff line numberDiff line change
@@ -174,11 +174,9 @@ ANALYZE [ ( <replaceable class="parameter">option</replaceable> [, ...] ) ] [ <r
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<title>Notes</title>
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<para>
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To analyze a table, one must ordinarily be the table's owner or a
178-
superuser. However, database owners are allowed to
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To analyze a table, one must ordinarily have the <literal>MAINTAIN</literal>
178+
privilege on the table. However, database owners are allowed to
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analyze all tables in their databases, except shared catalogs.
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(The restriction for shared catalogs means that a true database-wide
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<command>ANALYZE</command> can only be performed by a superuser.)
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<command>ANALYZE</command> will skip over any tables that the calling user
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does not have permission to analyze.
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</para>

‎doc/src/sgml/ref/cluster.sgml

Lines changed: 7 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -68,9 +68,8 @@ CLUSTER [ ( <replaceable class="parameter">option</replaceable> [, ...] ) ] [ <r
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<command>CLUSTER</command> without a
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<replaceable class="parameter">table_name</replaceable> reclusters all the
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previously-clustered tables in the current database that the calling user
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owns, or all such tables if called by a superuser. This
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form of <command>CLUSTER</command> cannot be executed inside a transaction
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block.
71+
has privileges for. This form of <command>CLUSTER</command> cannot be
72+
executed inside a transaction block.
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</para>
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<para>
@@ -131,6 +130,11 @@ CLUSTER [ ( <replaceable class="parameter">option</replaceable> [, ...] ) ] [ <r
131130
<refsect1>
132131
<title>Notes</title>
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133+
<para>
134+
To cluster a table, one must have the <literal>MAINTAIN</literal> privilege
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on the table.
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</para>
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<para>
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In cases where you are accessing single rows randomly
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within a table, the actual order of the data in the

‎doc/src/sgml/ref/grant.sgml

Lines changed: 2 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -21,7 +21,7 @@ PostgreSQL documentation
2121

2222
<refsynopsisdiv>
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<synopsis>
24-
GRANT { { SELECT | INSERT | UPDATE | DELETE | TRUNCATE | REFERENCES | TRIGGER }
24+
GRANT { { SELECT | INSERT | UPDATE | DELETE | TRUNCATE | REFERENCES | TRIGGER | MAINTAIN }
2525
[, ...] | ALL [ PRIVILEGES ] }
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ON { [ TABLE ] <replaceable class="parameter">table_name</replaceable> [, ...]
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| ALL TABLES IN SCHEMA <replaceable class="parameter">schema_name</replaceable> [, ...] }
@@ -193,6 +193,7 @@ GRANT <replaceable class="parameter">role_name</replaceable> [, ...] TO <replace
193193
<term><literal>USAGE</literal></term>
194194
<term><literal>SET</literal></term>
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<term><literal>ALTER SYSTEM</literal></term>
196+
<term><literal>MAINTAIN</literal></term>
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<listitem>
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<para>
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Specific types of privileges, as defined in <xref linkend="ddl-priv"/>.

‎doc/src/sgml/ref/lock.sgml

Lines changed: 2 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -166,8 +166,8 @@ LOCK [ TABLE ] [ ONLY ] <replaceable class="parameter">name</replaceable> [ * ]
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<para>
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To lock a table, the user must have the right privilege for the specified
169-
<replaceable class="parameter">lockmode</replaceable>, or be the table's
170-
owner or a superuser. If the user has
169+
<replaceable class="parameter">lockmode</replaceable>.
170+
If the user has <literal>MAINTAIN</literal>,
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<literal>UPDATE</literal>, <literal>DELETE</literal>, or
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<literal>TRUNCATE</literal> privileges on the table, any <replaceable
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class="parameter">lockmode</replaceable> is permitted. If the user has

‎doc/src/sgml/ref/refresh_materialized_view.sgml

Lines changed: 3 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -31,8 +31,9 @@ REFRESH MATERIALIZED VIEW [ CONCURRENTLY ] <replaceable class="parameter">name</
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<para>
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<command>REFRESH MATERIALIZED VIEW</command> completely replaces the
34-
contents of a materialized view. To execute this command you must be the
35-
owner of the materialized view. The old contents are discarded. If
34+
contents of a materialized view. To execute this command you must have the
35+
<literal>MAINTAIN</literal>
36+
privilege on the materialized view. The old contents are discarded. If
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<literal>WITH DATA</literal> is specified (or defaults) the backing query
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is executed to provide the new data, and the materialized view is left in a
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scannable state. If <literal>WITH NO DATA</literal> is specified no new

‎doc/src/sgml/ref/reindex.sgml

Lines changed: 14 additions & 9 deletions
Original file line numberDiff line numberDiff line change
@@ -298,16 +298,21 @@ REINDEX [ ( <replaceable class="parameter">option</replaceable> [, ...] ) ] { DA
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</para>
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300300
<para>
301-
Reindexing a single index or table requires being the owner of that
302-
index or table. Reindexing a schema or database requires being the
303-
owner of that schema or database. Note specifically that it's thus
301+
Reindexing a single index or table requires
302+
having the <literal>MAINTAIN</literal> privilege on the
303+
table. Note that while <command>REINDEX</command> on a partitioned index or
304+
table requires having the <literal>MAINTAIN</literal> privilege on the
305+
partitioned table, such commands skip the privilege checks when processing
306+
the individual partitions. Reindexing a schema or database requires being the
307+
owner of that schema or database or having privileges of the
308+
<link linkend="predefined-roles-table"><literal>pg_maintain</literal></link>
309+
role. Note specifically that it's thus
304310
possible for non-superusers to rebuild indexes of tables owned by
305-
other users. However, as a special exception, when
306-
<command>REINDEX DATABASE</command>, <command>REINDEX SCHEMA</command>
307-
or <command>REINDEX SYSTEM</command> is issued by a non-superuser,
308-
indexes on shared catalogs will be skipped unless the user owns the
309-
catalog (which typically won't be the case). Of course, superusers
310-
can always reindex anything.
311+
other users. However, as a special exception,
312+
<command>REINDEX DATABASE</command>, <command>REINDEX SCHEMA</command>,
313+
and <command>REINDEX SYSTEM</command> will skip indexes on shared catalogs
314+
unless the user has the <literal>MAINTAIN</literal> privilege on the
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catalog.
311316
</para>
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313318
<para>

‎doc/src/sgml/ref/revoke.sgml

Lines changed: 1 addition & 1 deletion
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@@ -22,7 +22,7 @@ PostgreSQL documentation
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<refsynopsisdiv>
2323
<synopsis>
2424
REVOKE [ GRANT OPTION FOR ]
25-
{ { SELECT | INSERT | UPDATE | DELETE | TRUNCATE | REFERENCES | TRIGGER }
25+
{ { SELECT | INSERT | UPDATE | DELETE | TRUNCATE | REFERENCES | TRIGGER | MAINTAIN }
2626
[, ...] | ALL [ PRIVILEGES ] }
2727
ON { [ TABLE ] <replaceable class="parameter">table_name</replaceable> [, ...]
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| ALL TABLES IN SCHEMA <replaceable>schema_name</replaceable> [, ...] }

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