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sql_parse.cc
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/* Copyright (c) 2000, 2016, Oracle and/or its affiliates. All rights reserved.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; version 2 of the License.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
#define MYSQL_LEX 1
#include "my_global.h"
#include "sql_priv.h"
#include "unireg.h" // REQUIRED: for other includes
#include "sql_parse.h" // sql_kill, *_precheck, *_prepare
#include "lock.h" // try_transactional_lock,
// check_transactional_lock,
// set_handler_table_locks,
// lock_global_read_lock,
// make_global_read_lock_block_commit
#include "sql_base.h" // find_temporary_table
#include "sql_cache.h" // QUERY_CACHE_FLAGS_SIZE, query_cache_*
#include "sql_show.h" // mysqld_list_*, mysqld_show_*,
// calc_sum_of_all_status
#include "mysqld.h"
#include "sql_locale.h" // my_locale_en_US
#include "log.h" // flush_error_log
#include "sql_view.h" // mysql_create_view, mysql_drop_view
#include "sql_delete.h" // mysql_delete
#include "sql_insert.h" // mysql_insert
#include "sql_update.h" // mysql_update, mysql_multi_update
#include "sql_partition.h" // struct partition_info
#ifdef WITH_PARTITION_STORAGE_ENGINE
#include "partition_info.h" // has_external_data_or_index_dir
#endif /* WITH_PARTITION_STORAGE_ENGINE */
#include "sql_db.h" // mysql_change_db, mysql_create_db,
// mysql_rm_db, mysql_upgrade_db,
// mysql_alter_db,
// check_db_dir_existence,
// my_dbopt_cleanup
#include "sql_table.h" // mysql_create_like_table,
// mysql_create_table,
// mysql_alter_table,
// mysql_backup_table,
// mysql_restore_table
// primary_key_name
#include "sql_reload.h" // reload_acl_and_cache
#include "sql_admin.h" // mysql_assign_to_keycache
#include "sql_connect.h" // check_user,
// decrease_user_connections,
// thd_init_client_charset, check_mqh,
// reset_mqh
#include "sql_rename.h" // mysql_rename_table
#include "sql_tablespace.h" // mysql_alter_tablespace
#include "hostname.h" // hostname_cache_refresh
#include "sql_acl.h" // *_ACL, check_grant, is_acl_user,
// has_any_table_level_privileges,
// mysql_drop_user, mysql_rename_user,
// check_grant_routine,
// mysql_routine_grant,
// mysql_show_grants,
// sp_grant_privileges, ...
#include "sql_test.h" // mysql_print_status
#include "sql_select.h" // handle_select, mysql_select,
#include "sql_load.h" // mysql_load
#include "sql_servers.h" // create_servers, alter_servers,
// drop_servers, servers_reload
#include "sql_handler.h" // mysql_ha_open, mysql_ha_close,
// mysql_ha_read
#include "sql_binlog.h" // mysql_client_binlog_statement
#include "sql_do.h" // mysql_do
#include "sql_help.h" // mysqld_help
#include "rpl_constants.h" // Incident, INCIDENT_LOST_EVENTS
#include "log_event.h"
#include "rpl_slave.h"
#include "rpl_master.h"
#include "rpl_filter.h"
#include <m_ctype.h>
#include <myisam.h>
#include <my_dir.h>
#include "rpl_handler.h"
#include "sp_head.h"
#include "sp.h"
#include "sp_cache.h"
#include "events.h"
#include "sql_trigger.h"
#include "transaction.h"
#include "sql_audit.h"
#include "sql_prepare.h"
#include "debug_sync.h"
#include "probes_mysql.h"
#include "set_var.h"
#include "opt_trace.h"
#include "mysql/psi/mysql_statement.h"
#include "sql_bootstrap.h"
#include "opt_explain.h"
#include "sql_rewrite.h"
#include "global_threads.h"
#include "sql_analyse.h"
#include "table_cache.h" // table_cache_manager
#include "sql_timer.h" // thd_timer_set, thd_timer_reset
#include "sp_rcontext.h"
#include "sql_readonly.h" // check_ro
#include "sql_digest.h"
#include "sql_db.h" // init_thd_db_read_only
// is_thd_db_read_only_by_name
#include "sql_multi_tenancy.h"
#include "native_procedure_priv.h"
#include "sql_parse_com_rpc.h" // handle_com_rpc, srv_session_end_statement
#include "srv_session.h"
#ifdef HAVE_SYS_PRCTL_H
#include <sys/prctl.h>
#endif
#ifndef EMBEDDED_LIBRARY
#include "perf_counters.h"
#endif
#include "query_tag_perf_counter.h"
#ifdef HAVE_JEMALLOC
#ifndef EMBEDDED_LIBRARY
#include <jemalloc/jemalloc.h>
#endif
#endif
#include <algorithm>
using std::max;
using std::min;
#include "opt_explain_json.h"
#ifdef HAVE_SYS_RESOURCE_H
#include <sys/resource.h>
#endif
#include "column_statistics.h"
#if HAVE_GETRUSAGE
#define RUSAGE_USEC(tv) ((tv).tv_sec*1000*1000 + (tv).tv_usec)
#define RUSAGE_DIFF_USEC(tv1, tv2) (RUSAGE_USEC((tv1))-RUSAGE_USEC((tv2)))
#endif
#define FLAGSTR(V,F) ((V)&(F)?#F" ":"")
/**
@defgroup Runtime_Environment Runtime Environment
@{
*/
/* Used in error handling only */
#define SP_TYPE_STRING(LP) \
((LP)->sphead->m_type == SP_TYPE_FUNCTION ? "FUNCTION" : "PROCEDURE")
#define SP_COM_STRING(LP) \
((LP)->sql_command == SQLCOM_CREATE_SPFUNCTION || \
(LP)->sql_command == SQLCOM_ALTER_FUNCTION || \
(LP)->sql_command == SQLCOM_SHOW_CREATE_FUNC || \
(LP)->sql_command == SQLCOM_DROP_FUNCTION ? \
"FUNCTION" : "PROCEDURE")
static bool execute_sqlcom_select(THD *thd, TABLE_LIST *all_tables,
ulonglong *last_timer);
static bool check_show_access(THD *thd, TABLE_LIST *table);
static void sql_kill(THD *thd, my_thread_id id, bool only_kill_query,
const char *reason = nullptr);
static bool lock_tables_precheck(THD *thd, TABLE_LIST *tables);
static void store_warnings_in_resp_attrs(THD *thd);
using Table_List = std::list<std::pair<const char *, const char *>>;
static void store_query_tables_in_response_attributes(
THD *thd, const Table_List &the_tables, ulong max_tables_len,
char read_or_write);
const char *any_db="*any*"; // Special symbol for check_access
char * histogram_step_size_connection_create= NULL;
char * histogram_step_size_update_command= NULL;
char * histogram_step_size_delete_command= NULL;
char * histogram_step_size_insert_command= NULL;
char * histogram_step_size_select_command= NULL;
char * histogram_step_size_ddl_command= NULL;
char * histogram_step_size_transaction_command= NULL;
char * histogram_step_size_handler_command= NULL;
char * histogram_step_size_other_command= NULL;
const LEX_STRING command_name[]={
{ C_STRING_WITH_LEN("Sleep") },
{ C_STRING_WITH_LEN("Quit") },
{ C_STRING_WITH_LEN("Init DB") },
{ C_STRING_WITH_LEN("Query") },
{ C_STRING_WITH_LEN("Field List") },
{ C_STRING_WITH_LEN("Create DB") },
{ C_STRING_WITH_LEN("Drop DB") },
{ C_STRING_WITH_LEN("Refresh") },
{ C_STRING_WITH_LEN("Shutdown") },
{ C_STRING_WITH_LEN("Statistics") },
{ C_STRING_WITH_LEN("Processlist") },
{ C_STRING_WITH_LEN("Connect") },
{ C_STRING_WITH_LEN("Kill") },
{ C_STRING_WITH_LEN("Debug") },
{ C_STRING_WITH_LEN("Ping") },
{ C_STRING_WITH_LEN("Time") },
{ C_STRING_WITH_LEN("Delayed insert") },
{ C_STRING_WITH_LEN("Change user") },
{ C_STRING_WITH_LEN("Binlog Dump") },
{ C_STRING_WITH_LEN("Table Dump") },
{ C_STRING_WITH_LEN("Connect Out") },
{ C_STRING_WITH_LEN("Register Slave") },
{ C_STRING_WITH_LEN("Prepare") },
{ C_STRING_WITH_LEN("Execute") },
{ C_STRING_WITH_LEN("Long Data") },
{ C_STRING_WITH_LEN("Close stmt") },
{ C_STRING_WITH_LEN("Reset stmt") },
{ C_STRING_WITH_LEN("Set option") },
{ C_STRING_WITH_LEN("Fetch") },
{ C_STRING_WITH_LEN("Daemon") },
{ C_STRING_WITH_LEN("Binlog Dump GTID") },
{ C_STRING_WITH_LEN("Reset Connection") },
{ C_STRING_WITH_LEN("Error") }, // Last command number
{ nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 },
{ nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 },
{ nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 },
{ nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 },
{ nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 },
{ nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 },
{ nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 },
{ nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 },
{ nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 },
{ nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 },
{ nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 },
{ nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 },
{ nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 },
{ nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 },
{ nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 },
{ nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 },
{ nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 },
{ nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 },
{ nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 },
{ nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 },
{ nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 },
{ nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 },
{ nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 },
{ nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 },
{ nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 },
{ nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 },
{ nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 },
{ nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 },
{ nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 },
{ nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 },
{ nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 },
{ nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 },
{ nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 },
{ nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 },
{ nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 },
{ nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 },
{ nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 },
{ nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 },
{ nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 },
{ nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 },
{ nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 },
{ nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 },
{ nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 },
{ nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 },
{ nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 },
{ nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 },
{ nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 },
{ nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 },
{ nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 },
{ nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 },
{ nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 },
{ nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 },
{ nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 },
{ nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 },
{ nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 }, { nullptr, 0 },
{ nullptr, 0 },
{ C_STRING_WITH_LEN("Error") },
{ C_STRING_WITH_LEN("Query attributes") },
};
static_assert(array_elements(command_name) == 256,
"command_name must have 256 elements");
const char *xa_state_names[]={
"NON-EXISTING", "ACTIVE", "IDLE", "PREPARED", "ROLLBACK ONLY"
};
Slow_log_throttle log_throttle_qni(&opt_log_throttle_queries_not_using_indexes,
&LOCK_log_throttle_qni,
Log_throttle::LOG_THROTTLE_WINDOW_SIZE,
slow_log_print,
"throttle: %10lu 'index "
"not used' warning(s) suppressed.");
Slow_log_throttle log_throttle_legacy(&opt_log_throttle_legacy_user,
&LOCK_log_throttle_legacy,
Log_throttle::LOG_THROTTLE_WINDOW_SIZE,
slow_log_print,
"throttle: %10lu 'legacy user' "
"warning(s) suppressed.");
Slow_log_throttle log_throttle_ddl(&opt_log_throttle_ddl,
&LOCK_log_throttle_ddl,
Log_throttle::LOG_THROTTLE_WINDOW_SIZE,
slow_log_print,
"throttle: %10lu 'ddl' "
"warning(s) suppressed.");
#ifdef HAVE_REPLICATION
/**
Returns true if all tables should be ignored.
*/
inline bool all_tables_not_ok(THD *thd, TABLE_LIST *tables)
{
return rpl_filter->is_on() && tables && !thd->sp_runtime_ctx &&
!rpl_filter->tables_ok(thd->db, tables);
}
/**
Checks whether the event for the given database, db, should
be ignored or not. This is done by checking whether there are
active rules in ignore_db or in do_db containers. If there
are, then check if there is a match, if not then check the
wild_do rules.
NOTE: This means that when using this function replicate-do-db
and replicate-ignore-db take precedence over wild do
rules.
@param thd Thread handle.
@param db Database name used while evaluating the filtering
rules.
*/
inline bool db_stmt_db_ok(THD *thd, char* db)
{
DBUG_ENTER("db_stmt_db_ok");
if (!thd->slave_thread)
DBUG_RETURN(TRUE);
/*
No filters exist in ignore/do_db ? Then, just check
wild_do_table filtering. Otherwise, check the do_db
rules.
*/
bool db_ok= (rpl_filter->get_do_db()->is_empty() &&
rpl_filter->get_ignore_db()->is_empty()) ?
rpl_filter->db_ok_with_wild_table(db) :
rpl_filter->db_ok(db);
DBUG_RETURN(db_ok);
}
#endif
static bool some_non_temp_table_to_be_updated(THD *thd, TABLE_LIST *tables)
{
for (TABLE_LIST *table= tables; table; table= table->next_global)
{
DBUG_ASSERT(table->db && table->table_name);
if (table->updating && !find_temporary_table(thd, table))
return 1;
}
return 0;
}
/*
Implicitly commit a active transaction if statement requires so.
@param thd Thread handle.
@param mask Bitmask used for the SQL command match.
*/
bool stmt_causes_implicit_commit(const THD *thd, uint mask)
{
const LEX *lex= thd->lex;
bool skip= FALSE;
DBUG_ENTER("stmt_causes_implicit_commit");
if (!(sql_command_flags[lex->sql_command] & mask))
DBUG_RETURN(FALSE);
switch (lex->sql_command) {
case SQLCOM_DROP_TABLE:
skip= lex->drop_temporary;
break;
case SQLCOM_ALTER_TABLE:
case SQLCOM_CREATE_TABLE:
/* If CREATE TABLE of non-temporary table, do implicit commit */
skip= (lex->create_info.options & HA_LEX_CREATE_TMP_TABLE);
break;
case SQLCOM_SET_OPTION:
skip= lex->autocommit ? FALSE : TRUE;
break;
default:
break;
}
DBUG_RETURN(!skip);
}
/**
Mark all commands that somehow changes a table.
This is used to check number of updates / hour.
sql_command is actually set to SQLCOM_END sometimes
so we need the +1 to include it in the array.
See COMMAND_FLAG_xxx for different type of commands
2 - query that returns meaningful ROW_COUNT() -
a number of modified rows
*/
uint sql_command_flags[SQLCOM_END+1];
uint server_command_flags[COM_MAX];
void init_update_queries(void)
{
/* Initialize the server command flags array. */
memset(server_command_flags, 0, sizeof(server_command_flags));
server_command_flags[COM_STATISTICS]= CF_SKIP_QUESTIONS;
server_command_flags[COM_PING]= CF_SKIP_QUESTIONS;
server_command_flags[COM_STMT_PREPARE]= CF_SKIP_QUESTIONS;
server_command_flags[COM_STMT_CLOSE]= CF_SKIP_QUESTIONS;
server_command_flags[COM_STMT_RESET]= CF_SKIP_QUESTIONS;
/* Initialize the sql command flags array. */
memset(sql_command_flags, 0, sizeof(sql_command_flags));
/*
In general, DDL statements do not generate row events and do not go
through a cache before being written to the binary log. However, the
CREATE TABLE...SELECT is an exception because it may generate row
events. For that reason, the SQLCOM_CREATE_TABLE which represents
a CREATE TABLE, including the CREATE TABLE...SELECT, has the
CF_CAN_GENERATE_ROW_EVENTS flag. The distinction between a regular
CREATE TABLE and the CREATE TABLE...SELECT is made in other parts of
the code, in particular in the Query_log_event's constructor.
*/
sql_command_flags[SQLCOM_CREATE_TABLE]= CF_CHANGES_DATA | CF_REEXECUTION_FRAGILE |
CF_AUTO_COMMIT_TRANS |
CF_CAN_GENERATE_ROW_EVENTS;
sql_command_flags[SQLCOM_CREATE_INDEX]= CF_CHANGES_DATA | CF_AUTO_COMMIT_TRANS;
sql_command_flags[SQLCOM_ALTER_TABLE]= CF_CHANGES_DATA | CF_WRITE_LOGS_COMMAND |
CF_AUTO_COMMIT_TRANS;
sql_command_flags[SQLCOM_TRUNCATE]= CF_CHANGES_DATA | CF_WRITE_LOGS_COMMAND |
CF_AUTO_COMMIT_TRANS;
sql_command_flags[SQLCOM_DROP_TABLE]= CF_CHANGES_DATA | CF_AUTO_COMMIT_TRANS;
sql_command_flags[SQLCOM_LOAD]= CF_CHANGES_DATA | CF_REEXECUTION_FRAGILE |
CF_CAN_GENERATE_ROW_EVENTS;
sql_command_flags[SQLCOM_CREATE_DB]= CF_CHANGES_DATA | CF_AUTO_COMMIT_TRANS;
sql_command_flags[SQLCOM_DROP_DB]= CF_CHANGES_DATA | CF_AUTO_COMMIT_TRANS;
sql_command_flags[SQLCOM_ALTER_DB_UPGRADE]= CF_AUTO_COMMIT_TRANS;
sql_command_flags[SQLCOM_ALTER_DB]= CF_CHANGES_DATA | CF_AUTO_COMMIT_TRANS;
sql_command_flags[SQLCOM_RENAME_TABLE]= CF_CHANGES_DATA | CF_AUTO_COMMIT_TRANS;
sql_command_flags[SQLCOM_DROP_INDEX]= CF_CHANGES_DATA | CF_AUTO_COMMIT_TRANS;
sql_command_flags[SQLCOM_CREATE_VIEW]= CF_CHANGES_DATA | CF_REEXECUTION_FRAGILE |
CF_AUTO_COMMIT_TRANS;
sql_command_flags[SQLCOM_DROP_VIEW]= CF_CHANGES_DATA | CF_AUTO_COMMIT_TRANS;
sql_command_flags[SQLCOM_CREATE_TRIGGER]= CF_CHANGES_DATA | CF_AUTO_COMMIT_TRANS;
sql_command_flags[SQLCOM_DROP_TRIGGER]= CF_CHANGES_DATA | CF_AUTO_COMMIT_TRANS;
sql_command_flags[SQLCOM_CREATE_EVENT]= CF_CHANGES_DATA | CF_AUTO_COMMIT_TRANS;
sql_command_flags[SQLCOM_ALTER_EVENT]= CF_CHANGES_DATA | CF_AUTO_COMMIT_TRANS;
sql_command_flags[SQLCOM_DROP_EVENT]= CF_CHANGES_DATA | CF_AUTO_COMMIT_TRANS;
sql_command_flags[SQLCOM_UPDATE]= CF_CHANGES_DATA | CF_REEXECUTION_FRAGILE |
CF_CAN_GENERATE_ROW_EVENTS |
CF_OPTIMIZER_TRACE |
CF_CAN_BE_EXPLAINED;
sql_command_flags[SQLCOM_UPDATE_MULTI]= CF_CHANGES_DATA | CF_REEXECUTION_FRAGILE |
CF_CAN_GENERATE_ROW_EVENTS |
CF_OPTIMIZER_TRACE |
CF_CAN_BE_EXPLAINED;
// This is INSERT VALUES(...), can be VALUES(stored_func()) so we trace it
sql_command_flags[SQLCOM_INSERT]= CF_CHANGES_DATA | CF_REEXECUTION_FRAGILE |
CF_CAN_GENERATE_ROW_EVENTS |
CF_OPTIMIZER_TRACE |
CF_CAN_BE_EXPLAINED;
sql_command_flags[SQLCOM_INSERT_SELECT]= CF_CHANGES_DATA | CF_REEXECUTION_FRAGILE |
CF_CAN_GENERATE_ROW_EVENTS |
CF_OPTIMIZER_TRACE |
CF_CAN_BE_EXPLAINED;
sql_command_flags[SQLCOM_DELETE]= CF_CHANGES_DATA | CF_REEXECUTION_FRAGILE |
CF_CAN_GENERATE_ROW_EVENTS |
CF_OPTIMIZER_TRACE |
CF_CAN_BE_EXPLAINED;
sql_command_flags[SQLCOM_DELETE_MULTI]= CF_CHANGES_DATA | CF_REEXECUTION_FRAGILE |
CF_CAN_GENERATE_ROW_EVENTS |
CF_OPTIMIZER_TRACE |
CF_CAN_BE_EXPLAINED;
sql_command_flags[SQLCOM_REPLACE]= CF_CHANGES_DATA | CF_REEXECUTION_FRAGILE |
CF_CAN_GENERATE_ROW_EVENTS |
CF_OPTIMIZER_TRACE |
CF_CAN_BE_EXPLAINED;
sql_command_flags[SQLCOM_REPLACE_SELECT]= CF_CHANGES_DATA | CF_REEXECUTION_FRAGILE |
CF_CAN_GENERATE_ROW_EVENTS |
CF_OPTIMIZER_TRACE |
CF_CAN_BE_EXPLAINED;
sql_command_flags[SQLCOM_SELECT]= CF_REEXECUTION_FRAGILE |
CF_CAN_GENERATE_ROW_EVENTS |
CF_OPTIMIZER_TRACE |
CF_CAN_BE_EXPLAINED;
// (1) so that subquery is traced when doing "SET @var = (subquery)"
/*
@todo SQLCOM_SET_OPTION should have CF_CAN_GENERATE_ROW_EVENTS
set, because it may invoke a stored function that generates row
events. /Sven
*/
sql_command_flags[SQLCOM_SET_OPTION]= CF_REEXECUTION_FRAGILE |
CF_AUTO_COMMIT_TRANS |
CF_CAN_GENERATE_ROW_EVENTS |
CF_OPTIMIZER_TRACE; // (1)
// (1) so that subquery is traced when doing "DO @var := (subquery)"
sql_command_flags[SQLCOM_DO]= CF_REEXECUTION_FRAGILE |
CF_CAN_GENERATE_ROW_EVENTS |
CF_OPTIMIZER_TRACE; // (1)
sql_command_flags[SQLCOM_SHOW_STATUS_PROC]= CF_STATUS_COMMAND | CF_REEXECUTION_FRAGILE;
sql_command_flags[SQLCOM_SHOW_STATUS]= CF_STATUS_COMMAND | CF_REEXECUTION_FRAGILE;
sql_command_flags[SQLCOM_SHOW_DATABASES]= CF_STATUS_COMMAND | CF_REEXECUTION_FRAGILE;
sql_command_flags[SQLCOM_SHOW_TRIGGERS]= CF_STATUS_COMMAND | CF_REEXECUTION_FRAGILE;
sql_command_flags[SQLCOM_SHOW_EVENTS]= CF_STATUS_COMMAND | CF_REEXECUTION_FRAGILE;
sql_command_flags[SQLCOM_SHOW_OPEN_TABLES]= CF_STATUS_COMMAND | CF_REEXECUTION_FRAGILE;
sql_command_flags[SQLCOM_SHOW_PLUGINS]= CF_STATUS_COMMAND;
sql_command_flags[SQLCOM_SHOW_FIELDS]= CF_STATUS_COMMAND | CF_REEXECUTION_FRAGILE;
sql_command_flags[SQLCOM_SHOW_KEYS]= CF_STATUS_COMMAND | CF_REEXECUTION_FRAGILE;
sql_command_flags[SQLCOM_SHOW_VARIABLES]= CF_STATUS_COMMAND | CF_REEXECUTION_FRAGILE;
sql_command_flags[SQLCOM_SHOW_CHARSETS]= CF_STATUS_COMMAND | CF_REEXECUTION_FRAGILE;
sql_command_flags[SQLCOM_SHOW_COLLATIONS]= CF_STATUS_COMMAND | CF_REEXECUTION_FRAGILE;
sql_command_flags[SQLCOM_SHOW_BINLOGS]= CF_STATUS_COMMAND;
sql_command_flags[SQLCOM_SHOW_SLAVE_HOSTS]= CF_STATUS_COMMAND;
sql_command_flags[SQLCOM_SHOW_BINLOG_EVENTS]= CF_STATUS_COMMAND;
sql_command_flags[SQLCOM_SHOW_BINLOG_CACHE]= CF_STATUS_COMMAND;
sql_command_flags[SQLCOM_SHOW_STORAGE_ENGINES]= CF_STATUS_COMMAND;
sql_command_flags[SQLCOM_SHOW_PRIVILEGES]= CF_STATUS_COMMAND;
sql_command_flags[SQLCOM_SHOW_WARNS]= CF_STATUS_COMMAND | CF_DIAGNOSTIC_STMT;
sql_command_flags[SQLCOM_SHOW_ERRORS]= CF_STATUS_COMMAND | CF_DIAGNOSTIC_STMT;
sql_command_flags[SQLCOM_SHOW_ENGINE_STATUS]= CF_STATUS_COMMAND;
sql_command_flags[SQLCOM_SHOW_ENGINE_MUTEX]= CF_STATUS_COMMAND;
sql_command_flags[SQLCOM_SHOW_ENGINE_LOGS]= CF_STATUS_COMMAND;
sql_command_flags[SQLCOM_SHOW_ENGINE_TRX]= CF_STATUS_COMMAND;
sql_command_flags[SQLCOM_SHOW_PROCESSLIST]= CF_STATUS_COMMAND;
sql_command_flags[SQLCOM_SHOW_TRANSACTION_LIST]= CF_STATUS_COMMAND;
sql_command_flags[SQLCOM_SHOW_CONNECTION_ATTRIBUTES]= CF_STATUS_COMMAND;
sql_command_flags[SQLCOM_SHOW_RESOURCE_COUNTERS]= CF_STATUS_COMMAND;
sql_command_flags[SQLCOM_SHOW_GRANTS]= CF_STATUS_COMMAND;
sql_command_flags[SQLCOM_SHOW_CREATE_DB]= CF_STATUS_COMMAND;
sql_command_flags[SQLCOM_SHOW_CREATE]= CF_STATUS_COMMAND;
sql_command_flags[SQLCOM_SHOW_MASTER_STAT]= CF_STATUS_COMMAND;
sql_command_flags[SQLCOM_SHOW_MEMORY_STATUS] = CF_STATUS_COMMAND;
sql_command_flags[SQLCOM_SHOW_SLAVE_STAT]= CF_STATUS_COMMAND;
sql_command_flags[SQLCOM_SHOW_CREATE_PROC]= CF_STATUS_COMMAND;
sql_command_flags[SQLCOM_SHOW_CREATE_FUNC]= CF_STATUS_COMMAND;
sql_command_flags[SQLCOM_SHOW_CREATE_TRIGGER]= CF_STATUS_COMMAND;
sql_command_flags[SQLCOM_SHOW_STATUS_FUNC]= CF_STATUS_COMMAND | CF_REEXECUTION_FRAGILE;
sql_command_flags[SQLCOM_SHOW_PROC_CODE]= CF_STATUS_COMMAND;
sql_command_flags[SQLCOM_SHOW_FUNC_CODE]= CF_STATUS_COMMAND;
sql_command_flags[SQLCOM_SHOW_CREATE_EVENT]= CF_STATUS_COMMAND;
sql_command_flags[SQLCOM_SHOW_PROFILES]= CF_STATUS_COMMAND;
sql_command_flags[SQLCOM_SHOW_PROFILE]= CF_STATUS_COMMAND;
sql_command_flags[SQLCOM_BINLOG_BASE64_EVENT]= CF_STATUS_COMMAND |
CF_CAN_GENERATE_ROW_EVENTS;
sql_command_flags[SQLCOM_SHOW_TABLES]= (CF_STATUS_COMMAND |
CF_SHOW_TABLE_COMMAND |
CF_REEXECUTION_FRAGILE);
sql_command_flags[SQLCOM_SHOW_TABLE_STATUS]= (CF_STATUS_COMMAND |
CF_SHOW_TABLE_COMMAND |
CF_REEXECUTION_FRAGILE);
sql_command_flags[SQLCOM_CREATE_USER]= CF_CHANGES_DATA;
sql_command_flags[SQLCOM_RENAME_USER]= CF_CHANGES_DATA;
sql_command_flags[SQLCOM_DROP_USER]= CF_CHANGES_DATA;
sql_command_flags[SQLCOM_ALTER_USER]= CF_CHANGES_DATA;
sql_command_flags[SQLCOM_GRANT]= CF_CHANGES_DATA;
sql_command_flags[SQLCOM_REVOKE]= CF_CHANGES_DATA;
sql_command_flags[SQLCOM_REVOKE_ALL]= CF_CHANGES_DATA;
sql_command_flags[SQLCOM_OPTIMIZE]= CF_CHANGES_DATA;
sql_command_flags[SQLCOM_CREATE_FUNCTION]= CF_CHANGES_DATA | CF_AUTO_COMMIT_TRANS;
sql_command_flags[SQLCOM_CREATE_NPROCEDURE]= CF_CHANGES_DATA | CF_AUTO_COMMIT_TRANS;
sql_command_flags[SQLCOM_DROP_NPROCEDURE]= CF_CHANGES_DATA | CF_AUTO_COMMIT_TRANS;
sql_command_flags[SQLCOM_CREATE_PROCEDURE]= CF_CHANGES_DATA | CF_AUTO_COMMIT_TRANS;
sql_command_flags[SQLCOM_CREATE_SPFUNCTION]= CF_CHANGES_DATA | CF_AUTO_COMMIT_TRANS;
sql_command_flags[SQLCOM_DROP_PROCEDURE]= CF_CHANGES_DATA | CF_AUTO_COMMIT_TRANS;
sql_command_flags[SQLCOM_DROP_FUNCTION]= CF_CHANGES_DATA | CF_AUTO_COMMIT_TRANS;
sql_command_flags[SQLCOM_ALTER_PROCEDURE]= CF_CHANGES_DATA | CF_AUTO_COMMIT_TRANS;
sql_command_flags[SQLCOM_ALTER_FUNCTION]= CF_CHANGES_DATA | CF_AUTO_COMMIT_TRANS;
sql_command_flags[SQLCOM_INSTALL_PLUGIN]= CF_CHANGES_DATA;
sql_command_flags[SQLCOM_UNINSTALL_PLUGIN]= CF_CHANGES_DATA;
/* Does not change the contents of the diagnostics area. */
sql_command_flags[SQLCOM_GET_DIAGNOSTICS]= CF_DIAGNOSTIC_STMT;
/*
(1): without it, in "CALL some_proc((subq))", subquery would not be
traced.
*/
sql_command_flags[SQLCOM_CALL]= CF_REEXECUTION_FRAGILE |
CF_CAN_GENERATE_ROW_EVENTS |
CF_OPTIMIZER_TRACE; // (1)
sql_command_flags[SQLCOM_EXECUTE]= CF_CAN_GENERATE_ROW_EVENTS;
/*
The following admin table operations are allowed
on log tables.
*/
sql_command_flags[SQLCOM_REPAIR]= CF_WRITE_LOGS_COMMAND | CF_AUTO_COMMIT_TRANS;
sql_command_flags[SQLCOM_OPTIMIZE]|= CF_WRITE_LOGS_COMMAND | CF_AUTO_COMMIT_TRANS;
sql_command_flags[SQLCOM_ANALYZE]= CF_WRITE_LOGS_COMMAND | CF_AUTO_COMMIT_TRANS;
sql_command_flags[SQLCOM_CHECK]= CF_WRITE_LOGS_COMMAND | CF_AUTO_COMMIT_TRANS;
sql_command_flags[SQLCOM_CREATE_USER]|= CF_AUTO_COMMIT_TRANS;
sql_command_flags[SQLCOM_DROP_USER]|= CF_AUTO_COMMIT_TRANS;
sql_command_flags[SQLCOM_RENAME_USER]|= CF_AUTO_COMMIT_TRANS;
sql_command_flags[SQLCOM_ALTER_USER]|= CF_AUTO_COMMIT_TRANS;
sql_command_flags[SQLCOM_REVOKE]|= CF_AUTO_COMMIT_TRANS;
sql_command_flags[SQLCOM_REVOKE_ALL]|= CF_AUTO_COMMIT_TRANS;
sql_command_flags[SQLCOM_GRANT]|= CF_AUTO_COMMIT_TRANS;
sql_command_flags[SQLCOM_ASSIGN_TO_KEYCACHE]= CF_AUTO_COMMIT_TRANS;
sql_command_flags[SQLCOM_PRELOAD_KEYS]= CF_AUTO_COMMIT_TRANS;
sql_command_flags[SQLCOM_FLUSH]= CF_AUTO_COMMIT_TRANS;
sql_command_flags[SQLCOM_RESET]= CF_AUTO_COMMIT_TRANS;
sql_command_flags[SQLCOM_CREATE_SERVER]= CF_AUTO_COMMIT_TRANS;
sql_command_flags[SQLCOM_ALTER_SERVER]= CF_AUTO_COMMIT_TRANS;
sql_command_flags[SQLCOM_DROP_SERVER]= CF_AUTO_COMMIT_TRANS;
sql_command_flags[SQLCOM_CHANGE_MASTER]= CF_AUTO_COMMIT_TRANS;
sql_command_flags[SQLCOM_SLAVE_START]= CF_AUTO_COMMIT_TRANS;
sql_command_flags[SQLCOM_SLAVE_STOP]= CF_AUTO_COMMIT_TRANS;
/*
The following statements can deal with temporary tables,
so temporary tables should be pre-opened for those statements to
simplify privilege checking.
There are other statements that deal with temporary tables and open
them, but which are not listed here. The thing is that the order of
pre-opening temporary tables for those statements is somewhat custom.
*/
sql_command_flags[SQLCOM_CREATE_TABLE]|= CF_PREOPEN_TMP_TABLES;
sql_command_flags[SQLCOM_DROP_TABLE]|= CF_PREOPEN_TMP_TABLES;
sql_command_flags[SQLCOM_CREATE_INDEX]|= CF_PREOPEN_TMP_TABLES;
sql_command_flags[SQLCOM_ALTER_TABLE]|= CF_PREOPEN_TMP_TABLES;
sql_command_flags[SQLCOM_TRUNCATE]|= CF_PREOPEN_TMP_TABLES;
sql_command_flags[SQLCOM_LOAD]|= CF_PREOPEN_TMP_TABLES;
sql_command_flags[SQLCOM_DROP_INDEX]|= CF_PREOPEN_TMP_TABLES;
sql_command_flags[SQLCOM_UPDATE]|= CF_PREOPEN_TMP_TABLES;
sql_command_flags[SQLCOM_UPDATE_MULTI]|= CF_PREOPEN_TMP_TABLES;
sql_command_flags[SQLCOM_INSERT_SELECT]|= CF_PREOPEN_TMP_TABLES;
sql_command_flags[SQLCOM_DELETE]|= CF_PREOPEN_TMP_TABLES;
sql_command_flags[SQLCOM_DELETE_MULTI]|= CF_PREOPEN_TMP_TABLES;
sql_command_flags[SQLCOM_REPLACE_SELECT]|= CF_PREOPEN_TMP_TABLES;
sql_command_flags[SQLCOM_SELECT]|= CF_PREOPEN_TMP_TABLES;
sql_command_flags[SQLCOM_SET_OPTION]|= CF_PREOPEN_TMP_TABLES;
sql_command_flags[SQLCOM_DO]|= CF_PREOPEN_TMP_TABLES;
sql_command_flags[SQLCOM_CALL]|= CF_PREOPEN_TMP_TABLES;
sql_command_flags[SQLCOM_CHECKSUM]|= CF_PREOPEN_TMP_TABLES;
sql_command_flags[SQLCOM_ANALYZE]|= CF_PREOPEN_TMP_TABLES;
sql_command_flags[SQLCOM_CHECK]|= CF_PREOPEN_TMP_TABLES;
sql_command_flags[SQLCOM_OPTIMIZE]|= CF_PREOPEN_TMP_TABLES;
sql_command_flags[SQLCOM_REPAIR]|= CF_PREOPEN_TMP_TABLES;
sql_command_flags[SQLCOM_PRELOAD_KEYS]|= CF_PREOPEN_TMP_TABLES;
sql_command_flags[SQLCOM_ASSIGN_TO_KEYCACHE]|= CF_PREOPEN_TMP_TABLES;
/*
DDL statements that should start with closing opened handlers.
We use this flag only for statements for which open HANDLERs
have to be closed before emporary tables are pre-opened.
*/
sql_command_flags[SQLCOM_CREATE_TABLE]|= CF_HA_CLOSE;
sql_command_flags[SQLCOM_DROP_TABLE]|= CF_HA_CLOSE;
sql_command_flags[SQLCOM_ALTER_TABLE]|= CF_HA_CLOSE;
sql_command_flags[SQLCOM_TRUNCATE]|= CF_HA_CLOSE;
sql_command_flags[SQLCOM_REPAIR]|= CF_HA_CLOSE;
sql_command_flags[SQLCOM_OPTIMIZE]|= CF_HA_CLOSE;
sql_command_flags[SQLCOM_ANALYZE]|= CF_HA_CLOSE;
sql_command_flags[SQLCOM_CHECK]|= CF_HA_CLOSE;
sql_command_flags[SQLCOM_CREATE_INDEX]|= CF_HA_CLOSE;
sql_command_flags[SQLCOM_DROP_INDEX]|= CF_HA_CLOSE;
sql_command_flags[SQLCOM_PRELOAD_KEYS]|= CF_HA_CLOSE;
sql_command_flags[SQLCOM_ASSIGN_TO_KEYCACHE]|= CF_HA_CLOSE;
/*
Mark statements that always are disallowed in read-only
transactions. Note that according to the SQL standard,
even temporary table DDL should be disallowed.
*/
sql_command_flags[SQLCOM_CREATE_TABLE]|= CF_DISALLOW_IN_RO_TRANS;
sql_command_flags[SQLCOM_ALTER_TABLE]|= CF_DISALLOW_IN_RO_TRANS;
sql_command_flags[SQLCOM_DROP_TABLE]|= CF_DISALLOW_IN_RO_TRANS;
sql_command_flags[SQLCOM_RENAME_TABLE]|= CF_DISALLOW_IN_RO_TRANS;
sql_command_flags[SQLCOM_CREATE_INDEX]|= CF_DISALLOW_IN_RO_TRANS;
sql_command_flags[SQLCOM_DROP_INDEX]|= CF_DISALLOW_IN_RO_TRANS;
sql_command_flags[SQLCOM_CREATE_DB]|= CF_DISALLOW_IN_RO_TRANS;
sql_command_flags[SQLCOM_DROP_DB]|= CF_DISALLOW_IN_RO_TRANS;
sql_command_flags[SQLCOM_ALTER_DB_UPGRADE]|= CF_DISALLOW_IN_RO_TRANS;
sql_command_flags[SQLCOM_ALTER_DB]|= CF_DISALLOW_IN_RO_TRANS;
sql_command_flags[SQLCOM_CREATE_VIEW]|= CF_DISALLOW_IN_RO_TRANS;
sql_command_flags[SQLCOM_DROP_VIEW]|= CF_DISALLOW_IN_RO_TRANS;
sql_command_flags[SQLCOM_CREATE_TRIGGER]|= CF_DISALLOW_IN_RO_TRANS;
sql_command_flags[SQLCOM_DROP_TRIGGER]|= CF_DISALLOW_IN_RO_TRANS;
sql_command_flags[SQLCOM_CREATE_EVENT]|= CF_DISALLOW_IN_RO_TRANS;
sql_command_flags[SQLCOM_ALTER_EVENT]|= CF_DISALLOW_IN_RO_TRANS;
sql_command_flags[SQLCOM_DROP_EVENT]|= CF_DISALLOW_IN_RO_TRANS;
sql_command_flags[SQLCOM_CREATE_USER]|= CF_DISALLOW_IN_RO_TRANS;
sql_command_flags[SQLCOM_RENAME_USER]|= CF_DISALLOW_IN_RO_TRANS;
sql_command_flags[SQLCOM_ALTER_USER]|= CF_DISALLOW_IN_RO_TRANS;
sql_command_flags[SQLCOM_DROP_USER]|= CF_DISALLOW_IN_RO_TRANS;
sql_command_flags[SQLCOM_CREATE_SERVER]|= CF_DISALLOW_IN_RO_TRANS;
sql_command_flags[SQLCOM_ALTER_SERVER]|= CF_DISALLOW_IN_RO_TRANS;
sql_command_flags[SQLCOM_DROP_SERVER]|= CF_DISALLOW_IN_RO_TRANS;
sql_command_flags[SQLCOM_CREATE_FUNCTION]|= CF_DISALLOW_IN_RO_TRANS;
sql_command_flags[SQLCOM_CREATE_NPROCEDURE]|=CF_DISALLOW_IN_RO_TRANS;
sql_command_flags[SQLCOM_DROP_NPROCEDURE]|= CF_DISALLOW_IN_RO_TRANS;
sql_command_flags[SQLCOM_CREATE_PROCEDURE]|= CF_DISALLOW_IN_RO_TRANS;
sql_command_flags[SQLCOM_CREATE_SPFUNCTION]|=CF_DISALLOW_IN_RO_TRANS;
sql_command_flags[SQLCOM_DROP_PROCEDURE]|= CF_DISALLOW_IN_RO_TRANS;
sql_command_flags[SQLCOM_DROP_FUNCTION]|= CF_DISALLOW_IN_RO_TRANS;
sql_command_flags[SQLCOM_ALTER_PROCEDURE]|= CF_DISALLOW_IN_RO_TRANS;
sql_command_flags[SQLCOM_ALTER_FUNCTION]|= CF_DISALLOW_IN_RO_TRANS;
sql_command_flags[SQLCOM_TRUNCATE]|= CF_DISALLOW_IN_RO_TRANS;
sql_command_flags[SQLCOM_ALTER_TABLESPACE]|= CF_DISALLOW_IN_RO_TRANS;
sql_command_flags[SQLCOM_REPAIR]|= CF_DISALLOW_IN_RO_TRANS;
sql_command_flags[SQLCOM_OPTIMIZE]|= CF_DISALLOW_IN_RO_TRANS;
sql_command_flags[SQLCOM_GRANT]|= CF_DISALLOW_IN_RO_TRANS;
sql_command_flags[SQLCOM_REVOKE]|= CF_DISALLOW_IN_RO_TRANS;
sql_command_flags[SQLCOM_REVOKE_ALL]|= CF_DISALLOW_IN_RO_TRANS;
sql_command_flags[SQLCOM_INSTALL_PLUGIN]|= CF_DISALLOW_IN_RO_TRANS;
sql_command_flags[SQLCOM_UNINSTALL_PLUGIN]|= CF_DISALLOW_IN_RO_TRANS;
}
bool sqlcom_can_generate_row_events(enum enum_sql_command command)
{
return (sql_command_flags[command] & CF_CAN_GENERATE_ROW_EVENTS);
}
bool is_update_query(enum enum_sql_command command)
{
DBUG_ASSERT(command >= 0 && command <= SQLCOM_END);
return (sql_command_flags[command] & CF_CHANGES_DATA) != 0;
}
bool is_explainable_query(enum enum_sql_command command)
{
DBUG_ASSERT(command >= 0 && command <= SQLCOM_END);
return (sql_command_flags[command] & CF_CAN_BE_EXPLAINED) != 0;
}
bool support_high_priority(enum enum_sql_command command)
{
DBUG_ASSERT(command >= 0 && command <= SQLCOM_END);
switch (command)
{
case SQLCOM_CREATE_TABLE:
case SQLCOM_ALTER_TABLE:
case SQLCOM_DROP_TABLE:
case SQLCOM_RENAME_TABLE:
case SQLCOM_CREATE_INDEX:
case SQLCOM_DROP_INDEX:
case SQLCOM_CREATE_DB:
case SQLCOM_ALTER_DB:
case SQLCOM_DROP_DB:
case SQLCOM_TRUNCATE:
case SQLCOM_CREATE_TRIGGER:
case SQLCOM_DROP_TRIGGER:
case SQLCOM_OPTIMIZE:
case SQLCOM_LOCK_TABLES:
return true;
default:
return false;
}
return false;
}
/**
Check if a sql command is allowed to write to log tables.
@param command The SQL command
@return true if writing is allowed
*/
bool is_log_table_write_query(enum enum_sql_command command)
{
DBUG_ASSERT(command >= 0 && command <= SQLCOM_END);
return (sql_command_flags[command] & CF_WRITE_LOGS_COMMAND) != 0;
}
void execute_init_command(THD *thd, LEX_STRING *init_command,
mysql_rwlock_t *var_lock)
{
Vio* save_vio;
ulong save_client_capabilities;
mysql_rwlock_rdlock(var_lock);
if (!init_command->length)
{
mysql_rwlock_unlock(var_lock);
return;
}
/*
copy the value under a lock, and release the lock.
init_command has to be executed without a lock held,
as it may try to change itself
*/
size_t len= init_command->length;
char *buf= thd->strmake(init_command->str, len);
mysql_rwlock_unlock(var_lock);
#if defined(ENABLED_PROFILING)
thd->profiling.start_new_query();
thd->profiling.set_query_source(buf, len);
#endif
THD_STAGE_INFO(thd, stage_execution_of_init_command);
save_client_capabilities= thd->client_capabilities;
thd->client_capabilities|= CLIENT_MULTI_QUERIES;
/*
We don't need return result of execution to client side.
To forbid this we should set thd->get_net()->vio to 0.
*/
NET* net = thd->get_net();
save_vio= net->vio;
net->vio= 0;
dispatch_command(COM_QUERY, thd, buf, len);
thd->client_capabilities= save_client_capabilities;
net->vio= save_vio;
#if defined(ENABLED_PROFILING)
thd->profiling.finish_current_query();
#endif
}
static char *fgets_fn(char *buffer, size_t size, fgets_input_t input, int *error)
{
MYSQL_FILE *in= static_cast<MYSQL_FILE*> (input);
char *line= mysql_file_fgets(buffer, size, in);
if (error)
*error= (line == NULL) ? ferror(in->m_file) : 0;
return line;
}
static void handle_bootstrap_impl(THD *thd)
{
MYSQL_FILE *file= bootstrap_file;
char buffer[MAX_BOOTSTRAP_QUERY_SIZE];
char *query;
int length;
int rc;
int error= 0;
DBUG_ENTER("handle_bootstrap");
#ifndef EMBEDDED_LIBRARY
pthread_detach_this_thread();
thd->thread_stack= (char*) &thd;
#endif /* EMBEDDED_LIBRARY */
thd->security_ctx->user= (char*) my_strdup("boot", MYF(MY_WME));
thd->security_ctx->priv_user[0]= thd->security_ctx->priv_host[0]=0;
/*
Make the "client" handle multiple results. This is necessary
to enable stored procedures with SELECTs and Dynamic SQL
in init-file.
*/
thd->client_capabilities|= CLIENT_MULTI_RESULTS;
thd->init_for_queries();
buffer[0]= '\0';
for ( ; ; )
{
rc= read_bootstrap_query(buffer, &length, file, fgets_fn, &error);
if (rc == READ_BOOTSTRAP_EOF)
break;
/*
Check for bootstrap file errors. SQL syntax errors will be
caught below.
*/
if (rc != READ_BOOTSTRAP_SUCCESS)
{
/*
mysql_parse() may have set a successful error status for the previous
query. We must clear the error status to report the bootstrap error.
*/
thd->get_stmt_da()->reset_diagnostics_area();
/* Get the nearest query text for reference. */
char *err_ptr= buffer + (length <= MAX_BOOTSTRAP_ERROR_LEN ?
0 : (length - MAX_BOOTSTRAP_ERROR_LEN));
switch (rc)
{
case READ_BOOTSTRAP_ERROR:
my_printf_error(ER_UNKNOWN_ERROR, "Bootstrap file error, return code (%d). "
"Nearest query: '%s'", MYF(0), error, err_ptr);
break;
case READ_BOOTSTRAP_QUERY_SIZE:
my_printf_error(ER_UNKNOWN_ERROR, "Boostrap file error. Query size "
"exceeded %d bytes near '%s'.", MYF(0),
MAX_BOOTSTRAP_LINE_SIZE, err_ptr);
break;
default:
DBUG_ASSERT(false);
break;
}
thd->protocol->end_statement(thd);
bootstrap_error= 1;
break;
}
query= (char *) thd->memdup_w_gap(buffer, length + 1,
thd->db_length + 1 +
QUERY_CACHE_FLAGS_SIZE);
size_t db_len= 0;
memcpy(query + length + 1, (char *) &db_len, sizeof(size_t));
thd->set_query_and_id(query, length, thd->charset(), next_query_id());
DBUG_PRINT("query",("%-.4096s",thd->query()));
#if defined(ENABLED_PROFILING)
thd->profiling.start_new_query();
thd->profiling.set_query_source(thd->query(), length);
#endif
/*
We don't need to obtain LOCK_thread_count here because in bootstrap
mode we have only one thread.
*/
thd->set_time();
Parser_state parser_state;
if (parser_state.init(thd, thd->query(), length))
{
thd->protocol->end_statement(thd);
bootstrap_error= 1;
break;
}
mysql_parse(thd, thd->query(), length, &parser_state, NULL, NULL);
sql_print_information("query: %s", thd->query());
bootstrap_error= thd->is_error();
thd->protocol->end_statement(thd);
#if defined(ENABLED_PROFILING)
thd->profiling.finish_current_query();
#endif
if (bootstrap_error)
break;
free_root(thd->mem_root,MYF(MY_KEEP_PREALLOC));
free_root(&thd->transaction.mem_root,MYF(MY_KEEP_PREALLOC));
}
DBUG_VOID_RETURN;
}
/**
Execute commands from bootstrap_file.
Used when creating the initial grant tables.
*/
pthread_handler_t handle_bootstrap(void *arg)
{
THD *thd=(THD*) arg;
mysql_thread_set_psi_id(thd->thread_id());
do_handle_bootstrap(thd);
return 0;
}
void do_handle_bootstrap(THD *thd)
{
bool thd_added= false;
/* The following must be called before DBUG_ENTER */
thd->thread_stack= (char*) &thd;
if (my_thread_init() || thd->store_globals())
{