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6c951fea5f
mariadb-upgrade silently dropped EXECUTE grants on sys schema stored functions and procedures. The sys schema install scripts reinstalled every routine with DROP FUNCTION/PROCEDURE IF EXISTS followed by CREATE. DROP cascades to delete the routine's rows in mysql.procs_priv, so any EXECUTE grant a DBA had issued on e.g. sys.table_exists or sys.quote_identifier was lost every time mariadb-upgrade reinstalled the sys schema, even though the routine itself came back unchanged. Fix: replace DROP ... IF EXISTS + CREATE with CREATE OR REPLACE in all 53 sys_schema function/procedure files and in the two templates (templates/function.sql, templates/procedure.sql) so future routines follow the same pattern. CREATE OR REPLACE PROCEDURE/FUNCTION goes through sp_drop_routine_internal(), which only deletes the mysql.proc row and never reaches sp_revoke_privileges() (that is only called from the explicit DROP PROCEDURE/FUNCTION statement), so mysql.procs_priv is left untouched and existing grants survive. This mirrors the pattern already used by sys schema views (CREATE OR REPLACE ... VIEW, since MDEV-9077), which never had this problem. Four of the converted files (functions/format_path.sql, functions/ps_is_account_enabled_57.sql, procedures/ps_setup_reset_to_default.sql, procedures/ps_trace_thread_57.sql) are not referenced by scripts/sys_schema/CMakeLists.txt; they were converted anyway for consistency and have no behavioural effect. As a side effect, a pre-existing UDF whose name collides with a sys routine name is no longer destroyed before the reinstall fails: DROP FUNCTION IF EXISTS resolved the UDF namespace first, silently dropping the UDF and then failing on ER_SP_ALREADY_EXISTS anyway; CREATE OR REPLACE fails immediately on ER_UDF_EXISTS with the UDF intact. scripts/maria_add_gis_sp.sql.in and the sys_config triggers were deliberately left untouched: the GIS procedures are only re-installed at bootstrap time (mariadb-upgrade instead patches their definer in place via UPDATE), and triggers carry no procs_priv rows, so neither is on the code path this bug is about. Added mysql-test/main/mysql_upgrade_sys_routine_grants.test, which grants EXECUTE on sys.table_exists and sys.quote_identifier, overwrites both routine bodies with a marker to prove the upgrade actually reinstalls them (rather than the sys schema install being skipped), runs mariadb-upgrade, and checks both that the grants survived and that the real routine bodies came back. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
88 lines
3.1 KiB
SQL
88 lines
3.1 KiB
SQL
-- Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
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--
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-- This program is free software; you can redistribute it and/or modify
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-- it under the terms of the GNU General Public License as published by
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-- the Free Software Foundation; version 2 of the License.
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--
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-- This program is distributed in the hope that it will be useful,
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-- but WITHOUT ANY WARRANTY; without even the implied warranty of
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-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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-- GNU General Public License for more details.
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--
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-- You should have received a copy of the GNU General Public License
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-- along with this program; if not, write to the Free Software
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-- Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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DELIMITER $$
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CREATE OR REPLACE DEFINER='mariadb.sys'@'localhost' PROCEDURE execute_prepared_stmt (
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IN in_query longtext CHARACTER SET UTF8
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)
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COMMENT '
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Description
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-----------
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Takes the query in the argument and executes it using a prepared statement. The prepared statement is deallocated,
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so the procedure is mainly useful for executing one off dynamically created queries.
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The sys_execute_prepared_stmt prepared statement name is used for the query and is required not to exist.
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Parameters
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-----------
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in_query (longtext CHARACTER SET UTF8):
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The query to execute.
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Configuration Options
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----------------------
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sys.debug
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Whether to provide debugging output.
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Default is ''OFF''. Set to ''ON'' to include.
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Example
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--------
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mysql> CALL sys.execute_prepared_stmt(''SELECT * FROM sys.sys_config'');
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+------------------------+-------+---------------------+--------+
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| variable | value | set_time | set_by |
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+------------------------+-------+---------------------+--------+
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| statement_truncate_len | 64 | 2015-06-30 13:06:00 | NULL |
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+------------------------+-------+---------------------+--------+
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1 row in set (0.00 sec)
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Query OK, 0 rows affected (0.00 sec)
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'
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SQL SECURITY INVOKER
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NOT DETERMINISTIC
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READS SQL DATA
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BEGIN
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-- Set configuration options
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IF (@sys.debug IS NULL) THEN
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SET @sys.debug = sys.sys_get_config('debug', 'OFF');
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END IF;
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-- Verify the query exists
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-- The shortest possible query is "DO 1"
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IF (in_query IS NULL OR LENGTH(in_query) < 4) THEN
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SIGNAL SQLSTATE '45000'
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SET MESSAGE_TEXT = "The @sys.execute_prepared_stmt.sql must contain a query";
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END IF;
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SET @sys.execute_prepared_stmt.sql = in_query;
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IF (@sys.debug = 'ON') THEN
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SELECT @sys.execute_prepared_stmt.sql AS 'Debug';
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END IF;
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PREPARE sys_execute_prepared_stmt FROM @sys.execute_prepared_stmt.sql;
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EXECUTE sys_execute_prepared_stmt;
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DEALLOCATE PREPARE sys_execute_prepared_stmt;
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SET @sys.execute_prepared_stmt.sql = NULL;
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END$$
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DELIMITER ;
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