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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>
71 lines
2.2 KiB
SQL
71 lines
2.2 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' FUNCTION ps_is_thread_instrumented (
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in_connection_id BIGINT UNSIGNED
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) RETURNS ENUM('YES', 'NO', 'UNKNOWN')
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COMMENT '
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Description
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-----------
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Checks whether the provided connection id is instrumented within Performance Schema.
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Parameters
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-----------
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in_connection_id (BIGINT UNSIGNED):
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The id of the connection to check.
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Returns
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-----------
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ENUM(\'YES\', \'NO\', \'UNKNOWN\')
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Example
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-----------
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mysql> SELECT sys.ps_is_thread_instrumented(CONNECTION_ID());
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+------------------------------------------------+
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| sys.ps_is_thread_instrumented(CONNECTION_ID()) |
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+------------------------------------------------+
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| YES |
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+------------------------------------------------+
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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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DECLARE v_enabled ENUM('YES', 'NO', 'UNKNOWN');
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IF (in_connection_id IS NULL) THEN
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RETURN NULL;
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END IF;
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SELECT INSTRUMENTED INTO v_enabled
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FROM performance_schema.threads
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WHERE PROCESSLIST_ID = in_connection_id;
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IF (v_enabled IS NULL) THEN
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RETURN 'UNKNOWN';
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ELSE
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RETURN v_enabled;
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END IF;
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END$$
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DELIMITER ;
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