/* Copyright (C) 2000-2003 MySQL AB 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; either version 2 of the License, or (at your option) any later version. 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ /* Handling of MySQL SQL variables To add a new variable, one has to do the following: - Use one of the 'sys_var... classes from set_var.h or write a specific one for the variable type. - Define it in the 'variable definition list' in this file. - If the variable is thread specific, add it to 'system_variables' struct. If not, add it to mysqld.cc and an declaration in 'mysql_priv.h' - If the variable should be changed from the command line, add a definition of it in the my_option structure list in mysqld.cc - Don't forget to initialize new fields in global_system_variables and max_system_variables! - If the variable should show up in 'show variables' add it to the init_vars[] struct in this file NOTES: - Be careful with var->save_result: sys_var::check() only updates ulonglong_value; so other members of the union are garbage then; to use them you must first assign a value to them (in specific ::check() for example). TODO: - Add full support for the variable character_set (for 4.1) - When updating myisam_delay_key_write, we should do a 'flush tables' of all MyISAM tables to ensure that they are reopen with the new attribute. */ #ifdef USE_PRAGMA_IMPLEMENTATION #pragma implementation // gcc: Class implementation #endif #include "mysql_priv.h" #include #include "slave.h" #include #include #include #include "event_scheduler.h" /* WITH_BERKELEY_STORAGE_ENGINE */ extern bool berkeley_shared_data; extern ulong berkeley_max_lock, berkeley_log_buffer_size; extern ulonglong berkeley_cache_size; extern ulong berkeley_region_size, berkeley_cache_parts; extern char *berkeley_home, *berkeley_tmpdir, *berkeley_logdir; /* WITH_INNOBASE_STORAGE_ENGINE */ extern uint innobase_flush_log_at_trx_commit; extern ulong innobase_fast_shutdown; extern long innobase_mirrored_log_groups, innobase_log_files_in_group; extern longlong innobase_log_file_size; extern long innobase_log_buffer_size; extern longlong innobase_buffer_pool_size; extern long innobase_additional_mem_pool_size; extern long innobase_buffer_pool_awe_mem_mb; extern long innobase_file_io_threads, innobase_lock_wait_timeout; extern long innobase_force_recovery; extern long innobase_open_files; extern char *innobase_data_home_dir, *innobase_data_file_path; extern char *innobase_log_group_home_dir, *innobase_log_arch_dir; extern char *innobase_unix_file_flush_method; /* The following variables have to be my_bool for SHOW VARIABLES to work */ extern my_bool innobase_log_archive, innobase_use_doublewrite, innobase_use_checksums, innobase_file_per_table, innobase_locks_unsafe_for_binlog; extern "C" { extern ulong srv_max_buf_pool_modified_pct; extern ulong srv_max_purge_lag; extern ulong srv_auto_extend_increment; extern ulong srv_n_spin_wait_rounds; extern ulong srv_n_free_tickets_to_enter; extern ulong srv_thread_sleep_delay; extern ulong srv_thread_concurrency; extern ulong srv_commit_concurrency; } /* WITH_NDBCLUSTER_STORAGE_ENGINE */ extern ulong ndb_cache_check_time; extern ulong ndb_extra_logging; #ifdef HAVE_NDB_BINLOG extern ulong ndb_report_thresh_binlog_epoch_slip; extern ulong ndb_report_thresh_binlog_mem_usage; #endif static HASH system_variable_hash; const char *bool_type_names[]= { "OFF", "ON", NullS }; TYPELIB bool_typelib= { array_elements(bool_type_names)-1, "", bool_type_names, NULL }; const char *delay_key_write_type_names[]= { "OFF", "ON", "ALL", NullS }; TYPELIB delay_key_write_typelib= { array_elements(delay_key_write_type_names)-1, "", delay_key_write_type_names, NULL }; static int sys_check_charset(THD *thd, set_var *var); static bool sys_update_charset(THD *thd, set_var *var); static void sys_set_default_charset(THD *thd, enum_var_type type); static int sys_check_ftb_syntax(THD *thd, set_var *var); static bool sys_update_ftb_syntax(THD *thd, set_var * var); static void sys_default_ftb_syntax(THD *thd, enum_var_type type); static bool sys_update_init_connect(THD*, set_var*); static void sys_default_init_connect(THD*, enum_var_type type); static bool sys_update_init_slave(THD*, set_var*); static void sys_default_init_slave(THD*, enum_var_type type); static bool set_option_bit(THD *thd, set_var *var); static bool set_option_autocommit(THD *thd, set_var *var); static int check_log_update(THD *thd, set_var *var); static bool set_log_update(THD *thd, set_var *var); static int check_pseudo_thread_id(THD *thd, set_var *var); void fix_binlog_format_after_update(THD *thd, enum_var_type type); static void fix_low_priority_updates(THD *thd, enum_var_type type); static int check_tx_isolation(THD *thd, set_var *var); static void fix_tx_isolation(THD *thd, enum_var_type type); static int check_completion_type(THD *thd, set_var *var); static void fix_completion_type(THD *thd, enum_var_type type); static void fix_net_read_timeout(THD *thd, enum_var_type type); static void fix_net_write_timeout(THD *thd, enum_var_type type); static void fix_net_retry_count(THD *thd, enum_var_type type); static void fix_max_join_size(THD *thd, enum_var_type type); static void fix_query_cache_size(THD *thd, enum_var_type type); static void fix_query_cache_min_res_unit(THD *thd, enum_var_type type); static void fix_myisam_max_sort_file_size(THD *thd, enum_var_type type); static void fix_max_binlog_size(THD *thd, enum_var_type type); static void fix_max_relay_log_size(THD *thd, enum_var_type type); static void fix_max_connections(THD *thd, enum_var_type type); static int check_max_delayed_threads(THD *thd, set_var *var); static void fix_thd_mem_root(THD *thd, enum_var_type type); static void fix_trans_mem_root(THD *thd, enum_var_type type); static void fix_server_id(THD *thd, enum_var_type type); static KEY_CACHE *create_key_cache(const char *name, uint length); void fix_sql_mode_var(THD *thd, enum_var_type type); static byte *get_error_count(THD *thd); static byte *get_warning_count(THD *thd); static byte *get_prepared_stmt_count(THD *thd); static byte *get_tmpdir(THD *thd); /* Variable definition list These are variables that can be set from the command line, in alphabetic order. The variables are linked into the list. A variable is added to it in the constructor (see sys_var class for details). */ sys_var *sys_var::first= NULL; uint sys_var::sys_vars= 0; sys_var_thd_ulong sys_auto_increment_increment("auto_increment_increment", &SV::auto_increment_increment); sys_var_thd_ulong sys_auto_increment_offset("auto_increment_offset", &SV::auto_increment_offset); sys_var_bool_ptr sys_automatic_sp_privileges("automatic_sp_privileges", &sp_automatic_privileges); sys_var_const_str sys_basedir("basedir", mysql_home); sys_var_long_ptr sys_binlog_cache_size("binlog_cache_size", &binlog_cache_size); sys_var_thd_binlog_format sys_binlog_format("binlog_format", &SV::binlog_format); sys_var_thd_ulong sys_bulk_insert_buff_size("bulk_insert_buffer_size", &SV::bulk_insert_buff_size); sys_var_character_set_server sys_character_set_server("character_set_server"); sys_var_const_str sys_charset_system("character_set_system", (char *)my_charset_utf8_general_ci.name); sys_var_character_set_database sys_character_set_database("character_set_database"); sys_var_character_set_client sys_character_set_client("character_set_client"); sys_var_character_set_connection sys_character_set_connection("character_set_connection"); sys_var_character_set_results sys_character_set_results("character_set_results"); sys_var_character_set_filesystem sys_character_set_filesystem("character_set_filesystem"); sys_var_thd_ulong sys_completion_type("completion_type", &SV::completion_type, check_completion_type, fix_completion_type); sys_var_collation_connection sys_collation_connection("collation_connection"); sys_var_collation_database sys_collation_database("collation_database"); sys_var_collation_server sys_collation_server("collation_server"); sys_var_long_ptr sys_concurrent_insert("concurrent_insert", &myisam_concurrent_insert); sys_var_long_ptr sys_connect_timeout("connect_timeout", &connect_timeout); sys_var_const_str sys_datadir("datadir", mysql_real_data_home); #ifndef DBUG_OFF sys_var_thd_dbug sys_dbug("debug"); #endif sys_var_enum sys_delay_key_write("delay_key_write", &delay_key_write_options, &delay_key_write_typelib, fix_delay_key_write); sys_var_long_ptr sys_delayed_insert_limit("delayed_insert_limit", &delayed_insert_limit); sys_var_long_ptr sys_delayed_insert_timeout("delayed_insert_timeout", &delayed_insert_timeout); sys_var_long_ptr sys_delayed_queue_size("delayed_queue_size", &delayed_queue_size); sys_var_event_scheduler sys_event_scheduler("event_scheduler"); sys_var_long_ptr sys_expire_logs_days("expire_logs_days", &expire_logs_days); sys_var_bool_ptr sys_flush("flush", &myisam_flush); sys_var_long_ptr sys_flush_time("flush_time", &flush_time); sys_var_str sys_ft_boolean_syntax("ft_boolean_syntax", sys_check_ftb_syntax, sys_update_ftb_syntax, sys_default_ftb_syntax, ft_boolean_syntax); sys_var_str sys_init_connect("init_connect", 0, sys_update_init_connect, sys_default_init_connect,0); sys_var_str sys_init_slave("init_slave", 0, sys_update_init_slave, sys_default_init_slave,0); sys_var_thd_ulong sys_interactive_timeout("interactive_timeout", &SV::net_interactive_timeout); sys_var_thd_ulong sys_join_buffer_size("join_buffer_size", &SV::join_buff_size); sys_var_key_buffer_size sys_key_buffer_size("key_buffer_size"); sys_var_key_cache_long sys_key_cache_block_size("key_cache_block_size", offsetof(KEY_CACHE, param_block_size)); sys_var_key_cache_long sys_key_cache_division_limit("key_cache_division_limit", offsetof(KEY_CACHE, param_division_limit)); sys_var_key_cache_long sys_key_cache_age_threshold("key_cache_age_threshold", offsetof(KEY_CACHE, param_age_threshold)); sys_var_bool_ptr sys_local_infile("local_infile", &opt_local_infile); sys_var_trust_routine_creators sys_trust_routine_creators("log_bin_trust_routine_creators", &trust_function_creators); sys_var_bool_ptr sys_trust_function_creators("log_bin_trust_function_creators", &trust_function_creators); sys_var_bool_ptr sys_log_queries_not_using_indexes("log_queries_not_using_indexes", &opt_log_queries_not_using_indexes); sys_var_thd_ulong sys_log_warnings("log_warnings", &SV::log_warnings); sys_var_thd_ulong sys_long_query_time("long_query_time", &SV::long_query_time); sys_var_thd_bool sys_low_priority_updates("low_priority_updates", &SV::low_priority_updates, fix_low_priority_updates); #ifndef TO_BE_DELETED /* Alias for the low_priority_updates */ sys_var_thd_bool sys_sql_low_priority_updates("sql_low_priority_updates", &SV::low_priority_updates, fix_low_priority_updates); #endif sys_var_thd_ulong sys_max_allowed_packet("max_allowed_packet", &SV::max_allowed_packet); sys_var_long_ptr sys_max_binlog_cache_size("max_binlog_cache_size", &max_binlog_cache_size); sys_var_long_ptr sys_max_binlog_size("max_binlog_size", &max_binlog_size, fix_max_binlog_size); sys_var_long_ptr sys_max_connections("max_connections", &max_connections, fix_max_connections); sys_var_long_ptr sys_max_connect_errors("max_connect_errors", &max_connect_errors); sys_var_thd_ulong sys_max_insert_delayed_threads("max_insert_delayed_threads", &SV::max_insert_delayed_threads, check_max_delayed_threads, fix_max_connections); sys_var_thd_ulong sys_max_delayed_threads("max_delayed_threads", &SV::max_insert_delayed_threads, check_max_delayed_threads, fix_max_connections); sys_var_thd_ulong sys_max_error_count("max_error_count", &SV::max_error_count); sys_var_thd_ulong sys_max_heap_table_size("max_heap_table_size", &SV::max_heap_table_size); sys_var_thd_ulong sys_pseudo_thread_id("pseudo_thread_id", &SV::pseudo_thread_id, check_pseudo_thread_id, 0); sys_var_thd_ha_rows sys_max_join_size("max_join_size", &SV::max_join_size, fix_max_join_size); sys_var_thd_ulong sys_max_seeks_for_key("max_seeks_for_key", &SV::max_seeks_for_key); sys_var_thd_ulong sys_max_length_for_sort_data("max_length_for_sort_data", &SV::max_length_for_sort_data); #ifndef TO_BE_DELETED /* Alias for max_join_size */ sys_var_thd_ha_rows sys_sql_max_join_size("sql_max_join_size", &SV::max_join_size, fix_max_join_size); #endif static sys_var_long_ptr_global sys_max_prepared_stmt_count("max_prepared_stmt_count", &max_prepared_stmt_count, &LOCK_prepared_stmt_count); sys_var_long_ptr sys_max_relay_log_size("max_relay_log_size", &max_relay_log_size, fix_max_relay_log_size); sys_var_thd_ulong sys_max_sort_length("max_sort_length", &SV::max_sort_length); sys_var_thd_ulong sys_max_sp_recursion_depth("max_sp_recursion_depth", &SV::max_sp_recursion_depth); sys_var_max_user_conn sys_max_user_connections("max_user_connections"); sys_var_thd_ulong sys_max_tmp_tables("max_tmp_tables", &SV::max_tmp_tables); sys_var_long_ptr sys_max_write_lock_count("max_write_lock_count", &max_write_lock_count); sys_var_thd_ulong sys_multi_range_count("multi_range_count", &SV::multi_range_count); sys_var_long_ptr sys_myisam_data_pointer_size("myisam_data_pointer_size", &myisam_data_pointer_size); sys_var_thd_ulonglong sys_myisam_max_sort_file_size("myisam_max_sort_file_size", &SV::myisam_max_sort_file_size, fix_myisam_max_sort_file_size, 1); sys_var_thd_ulong sys_myisam_repair_threads("myisam_repair_threads", &SV::myisam_repair_threads); sys_var_thd_ulong sys_myisam_sort_buffer_size("myisam_sort_buffer_size", &SV::myisam_sort_buff_size); sys_var_bool_ptr sys_myisam_use_mmap("myisam_use_mmap", &opt_myisam_use_mmap); sys_var_thd_enum sys_myisam_stats_method("myisam_stats_method", &SV::myisam_stats_method, &myisam_stats_method_typelib, NULL); sys_var_thd_ulong sys_net_buffer_length("net_buffer_length", &SV::net_buffer_length); sys_var_thd_ulong sys_net_read_timeout("net_read_timeout", &SV::net_read_timeout, 0, fix_net_read_timeout); sys_var_thd_ulong sys_net_write_timeout("net_write_timeout", &SV::net_write_timeout, 0, fix_net_write_timeout); sys_var_thd_ulong sys_net_retry_count("net_retry_count", &SV::net_retry_count, 0, fix_net_retry_count); sys_var_thd_bool sys_new_mode("new", &SV::new_mode); sys_var_thd_bool sys_old_alter_table("old_alter_table", &SV::old_alter_table); sys_var_thd_bool sys_old_passwords("old_passwords", &SV::old_passwords); sys_var_thd_ulong sys_optimizer_prune_level("optimizer_prune_level", &SV::optimizer_prune_level); sys_var_thd_ulong sys_optimizer_search_depth("optimizer_search_depth", &SV::optimizer_search_depth); sys_var_thd_ulong sys_preload_buff_size("preload_buffer_size", &SV::preload_buff_size); sys_var_thd_ulong sys_read_buff_size("read_buffer_size", &SV::read_buff_size); sys_var_bool_ptr sys_readonly("read_only", &opt_readonly); sys_var_thd_ulong sys_read_rnd_buff_size("read_rnd_buffer_size", &SV::read_rnd_buff_size); sys_var_thd_ulong sys_div_precincrement("div_precision_increment", &SV::div_precincrement); #ifdef HAVE_REPLICATION sys_var_bool_ptr sys_relay_log_purge("relay_log_purge", &relay_log_purge); #endif sys_var_long_ptr sys_rpl_recovery_rank("rpl_recovery_rank", &rpl_recovery_rank); sys_var_long_ptr sys_query_cache_size("query_cache_size", &query_cache_size, fix_query_cache_size); sys_var_thd_ulong sys_range_alloc_block_size("range_alloc_block_size", &SV::range_alloc_block_size); sys_var_thd_ulong sys_query_alloc_block_size("query_alloc_block_size", &SV::query_alloc_block_size, 0, fix_thd_mem_root); sys_var_thd_ulong sys_query_prealloc_size("query_prealloc_size", &SV::query_prealloc_size, 0, fix_thd_mem_root); sys_var_readonly sys_tmpdir("tmpdir", OPT_GLOBAL, SHOW_CHAR, get_tmpdir); sys_var_thd_ulong sys_trans_alloc_block_size("transaction_alloc_block_size", &SV::trans_alloc_block_size, 0, fix_trans_mem_root); sys_var_thd_ulong sys_trans_prealloc_size("transaction_prealloc_size", &SV::trans_prealloc_size, 0, fix_trans_mem_root); #ifdef HAVE_QUERY_CACHE sys_var_long_ptr sys_query_cache_limit("query_cache_limit", &query_cache.query_cache_limit); sys_var_long_ptr sys_query_cache_min_res_unit("query_cache_min_res_unit", &query_cache_min_res_unit, fix_query_cache_min_res_unit); sys_var_thd_enum sys_query_cache_type("query_cache_type", &SV::query_cache_type, &query_cache_type_typelib); sys_var_thd_bool sys_query_cache_wlock_invalidate("query_cache_wlock_invalidate", &SV::query_cache_wlock_invalidate); #endif /* HAVE_QUERY_CACHE */ sys_var_bool_ptr sys_secure_auth("secure_auth", &opt_secure_auth); sys_var_long_ptr sys_server_id("server_id", &server_id, fix_server_id); sys_var_bool_ptr sys_slave_compressed_protocol("slave_compressed_protocol", &opt_slave_compressed_protocol); #ifdef HAVE_REPLICATION sys_var_long_ptr sys_slave_net_timeout("slave_net_timeout", &slave_net_timeout); sys_var_long_ptr sys_slave_trans_retries("slave_transaction_retries", &slave_trans_retries); #endif sys_var_long_ptr sys_slow_launch_time("slow_launch_time", &slow_launch_time); sys_var_thd_ulong sys_sort_buffer("sort_buffer_size", &SV::sortbuff_size); sys_var_thd_sql_mode sys_sql_mode("sql_mode", &SV::sql_mode); #ifdef HAVE_OPENSSL extern char *opt_ssl_ca, *opt_ssl_capath, *opt_ssl_cert, *opt_ssl_cipher, *opt_ssl_key; sys_var_const_str_ptr sys_ssl_ca("ssl_ca", &opt_ssl_ca); sys_var_const_str_ptr sys_ssl_capath("ssl_capath", &opt_ssl_capath); sys_var_const_str_ptr sys_ssl_cert("ssl_cert", &opt_ssl_cert); sys_var_const_str_ptr sys_ssl_cipher("ssl_cipher", &opt_ssl_cipher); sys_var_const_str_ptr sys_ssl_key("ssl_key", &opt_ssl_key); #else sys_var_const_str sys_ssl_ca("ssl_ca", NULL); sys_var_const_str sys_ssl_capath("ssl_capath", NULL); sys_var_const_str sys_ssl_cert("ssl_cert", NULL); sys_var_const_str sys_ssl_cipher("ssl_cipher", NULL); sys_var_const_str sys_ssl_key("ssl_key", NULL); #endif sys_var_thd_enum sys_updatable_views_with_limit("updatable_views_with_limit", &SV::updatable_views_with_limit, &updatable_views_with_limit_typelib); sys_var_thd_table_type sys_table_type("table_type", &SV::table_type); sys_var_thd_storage_engine sys_storage_engine("storage_engine", &SV::table_type); #ifdef HAVE_REPLICATION sys_var_sync_binlog_period sys_sync_binlog_period("sync_binlog", &sync_binlog_period); #endif sys_var_bool_ptr sys_sync_frm("sync_frm", &opt_sync_frm); sys_var_const_str sys_system_time_zone("system_time_zone", system_time_zone); sys_var_long_ptr sys_table_def_size("table_definition_cache", &table_def_size); sys_var_long_ptr sys_table_cache_size("table_open_cache", &table_cache_size); sys_var_long_ptr sys_table_lock_wait_timeout("table_lock_wait_timeout", &table_lock_wait_timeout); sys_var_long_ptr sys_thread_cache_size("thread_cache_size", &thread_cache_size); sys_var_thd_enum sys_tx_isolation("tx_isolation", &SV::tx_isolation, &tx_isolation_typelib, fix_tx_isolation, check_tx_isolation); sys_var_thd_ulong sys_tmp_table_size("tmp_table_size", &SV::tmp_table_size); sys_var_bool_ptr sys_timed_mutexes("timed_mutexes", &timed_mutexes); sys_var_const_str sys_version("version", server_version); sys_var_const_str sys_version_comment("version_comment", MYSQL_COMPILATION_COMMENT); sys_var_const_str sys_version_compile_machine("version_compile_machine", MACHINE_TYPE); sys_var_const_str sys_version_compile_os("version_compile_os", SYSTEM_TYPE); sys_var_thd_ulong sys_net_wait_timeout("wait_timeout", &SV::net_wait_timeout); sys_var_long_ptr sys_innodb_fast_shutdown("innodb_fast_shutdown", &innobase_fast_shutdown); sys_var_long_ptr sys_innodb_max_dirty_pages_pct("innodb_max_dirty_pages_pct", &srv_max_buf_pool_modified_pct); sys_var_long_ptr sys_innodb_max_purge_lag("innodb_max_purge_lag", &srv_max_purge_lag); sys_var_thd_bool sys_innodb_table_locks("innodb_table_locks", &SV::innodb_table_locks); sys_var_thd_bool sys_innodb_support_xa("innodb_support_xa", &SV::innodb_support_xa); sys_var_long_ptr sys_innodb_autoextend_increment("innodb_autoextend_increment", &srv_auto_extend_increment); sys_var_long_ptr sys_innodb_sync_spin_loops("innodb_sync_spin_loops", &srv_n_spin_wait_rounds); sys_var_long_ptr sys_innodb_concurrency_tickets("innodb_concurrency_tickets", &srv_n_free_tickets_to_enter); sys_var_long_ptr sys_innodb_thread_sleep_delay("innodb_thread_sleep_delay", &srv_thread_sleep_delay); sys_var_long_ptr sys_innodb_thread_concurrency("innodb_thread_concurrency", &srv_thread_concurrency); sys_var_long_ptr sys_innodb_commit_concurrency("innodb_commit_concurrency", &srv_commit_concurrency); /* Condition pushdown to storage engine */ sys_var_thd_bool sys_engine_condition_pushdown("engine_condition_pushdown", &SV::engine_condition_pushdown); /* ndb thread specific variable settings */ sys_var_thd_ulong sys_ndb_autoincrement_prefetch_sz("ndb_autoincrement_prefetch_sz", &SV::ndb_autoincrement_prefetch_sz); sys_var_thd_bool sys_ndb_force_send("ndb_force_send", &SV::ndb_force_send); #ifdef HAVE_NDB_BINLOG sys_var_long_ptr sys_ndb_report_thresh_binlog_epoch_slip("ndb_report_thresh_binlog_epoch_slip", &ndb_report_thresh_binlog_epoch_slip); sys_var_long_ptr sys_ndb_report_thresh_binlog_mem_usage("ndb_report_thresh_binlog_mem_usage", &ndb_report_thresh_binlog_mem_usage); #endif sys_var_thd_bool sys_ndb_use_exact_count("ndb_use_exact_count", &SV::ndb_use_exact_count); sys_var_thd_bool sys_ndb_use_transactions("ndb_use_transactions", &SV::ndb_use_transactions); sys_var_long_ptr sys_ndb_cache_check_time("ndb_cache_check_time", &ndb_cache_check_time); sys_var_thd_bool sys_ndb_index_stat_enable("ndb_index_stat_enable", &SV::ndb_index_stat_enable); sys_var_thd_ulong sys_ndb_index_stat_cache_entries("ndb_index_stat_cache_entries", &SV::ndb_index_stat_cache_entries); sys_var_thd_ulong sys_ndb_index_stat_update_freq("ndb_index_stat_update_freq", &SV::ndb_index_stat_update_freq); sys_var_long_ptr sys_ndb_extra_logging("ndb_extra_logging", &ndb_extra_logging); /* Time/date/datetime formats */ sys_var_thd_date_time_format sys_time_format("time_format", &SV::time_format, MYSQL_TIMESTAMP_TIME); sys_var_thd_date_time_format sys_date_format("date_format", &SV::date_format, MYSQL_TIMESTAMP_DATE); sys_var_thd_date_time_format sys_datetime_format("datetime_format", &SV::datetime_format, MYSQL_TIMESTAMP_DATETIME); /* Variables that are bits in THD */ sys_var_thd_bit sys_autocommit("autocommit", 0, set_option_autocommit, OPTION_NOT_AUTOCOMMIT, 1); static sys_var_thd_bit sys_big_tables("big_tables", 0, set_option_bit, OPTION_BIG_TABLES); #ifndef TO_BE_DELETED /* Alias for big_tables */ static sys_var_thd_bit sys_sql_big_tables("sql_big_tables", 0, set_option_bit, OPTION_BIG_TABLES); #endif static sys_var_thd_bit sys_big_selects("sql_big_selects", 0, set_option_bit, OPTION_BIG_SELECTS); static sys_var_thd_bit sys_log_off("sql_log_off", 0, set_option_bit, OPTION_LOG_OFF); static sys_var_thd_bit sys_log_update("sql_log_update", check_log_update, set_log_update, OPTION_BIN_LOG); static sys_var_thd_bit sys_log_binlog("sql_log_bin", check_log_update, set_option_bit, OPTION_BIN_LOG); static sys_var_thd_bit sys_sql_warnings("sql_warnings", 0, set_option_bit, OPTION_WARNINGS); static sys_var_thd_bit sys_sql_notes("sql_notes", 0, set_option_bit, OPTION_SQL_NOTES); static sys_var_thd_bit sys_auto_is_null("sql_auto_is_null", 0, set_option_bit, OPTION_AUTO_IS_NULL); static sys_var_thd_bit sys_safe_updates("sql_safe_updates", 0, set_option_bit, OPTION_SAFE_UPDATES); static sys_var_thd_bit sys_buffer_results("sql_buffer_result", 0, set_option_bit, OPTION_BUFFER_RESULT); static sys_var_thd_bit sys_quote_show_create("sql_quote_show_create", 0, set_option_bit, OPTION_QUOTE_SHOW_CREATE); static sys_var_thd_bit sys_foreign_key_checks("foreign_key_checks", 0, set_option_bit, OPTION_NO_FOREIGN_KEY_CHECKS, 1); static sys_var_thd_bit sys_unique_checks("unique_checks", 0, set_option_bit, OPTION_RELAXED_UNIQUE_CHECKS, 1); /* Local state variables */ static sys_var_thd_ha_rows sys_select_limit("sql_select_limit", &SV::select_limit); static sys_var_timestamp sys_timestamp("timestamp"); static sys_var_last_insert_id sys_last_insert_id("last_insert_id"); static sys_var_last_insert_id sys_identity("identity"); static sys_var_insert_id sys_insert_id("insert_id"); static sys_var_readonly sys_error_count("error_count", OPT_SESSION, SHOW_LONG, get_error_count); static sys_var_readonly sys_warning_count("warning_count", OPT_SESSION, SHOW_LONG, get_warning_count); static sys_var_readonly sys_prepared_stmt_count("prepared_stmt_count", OPT_GLOBAL, SHOW_LONG, get_prepared_stmt_count); /* alias for last_insert_id() to be compatible with Sybase */ #ifdef HAVE_REPLICATION static sys_var_slave_skip_counter sys_slave_skip_counter("sql_slave_skip_counter"); #endif static sys_var_rand_seed1 sys_rand_seed1("rand_seed1"); static sys_var_rand_seed2 sys_rand_seed2("rand_seed2"); static sys_var_thd_ulong sys_default_week_format("default_week_format", &SV::default_week_format); sys_var_thd_ulong sys_group_concat_max_len("group_concat_max_len", &SV::group_concat_max_len); sys_var_thd_time_zone sys_time_zone("time_zone"); /* Read only variables */ sys_var_have_variable sys_have_archive_db("have_archive", &have_archive_db); sys_var_have_variable sys_have_berkeley_db("have_bdb", &have_berkeley_db); sys_var_have_variable sys_have_blackhole_db("have_blackhole_engine", &have_blackhole_db); sys_var_have_variable sys_have_compress("have_compress", &have_compress); sys_var_have_variable sys_have_crypt("have_crypt", &have_crypt); sys_var_have_variable sys_have_csv_db("have_csv", &have_csv_db); sys_var_have_variable sys_have_dlopen("have_dynamic_loading", &have_dlopen); sys_var_have_variable sys_have_example_db("have_example_engine", &have_example_db); sys_var_have_variable sys_have_federated_db("have_federated_engine", &have_federated_db); sys_var_have_variable sys_have_geometry("have_geometry", &have_geometry); sys_var_have_variable sys_have_innodb("have_innodb", &have_innodb); sys_var_have_variable sys_have_ndbcluster("have_ndbcluster", &have_ndbcluster); sys_var_have_variable sys_have_openssl("have_openssl", &have_openssl); sys_var_have_variable sys_have_partition_db("have_partitioning", &have_partition_db); sys_var_have_variable sys_have_query_cache("have_query_cache", &have_query_cache); sys_var_have_variable sys_have_rtree_keys("have_rtree_keys", &have_rtree_keys); sys_var_have_variable sys_have_symlink("have_symlink", &have_symlink); sys_var_have_variable sys_have_row_based_replication("have_row_based_replication",&have_row_based_replication); /* Global read-only variable describing server license */ sys_var_const_str sys_license("license", STRINGIFY_ARG(LICENSE)); #ifdef HAVE_REPLICATION static int show_slave_skip_errors(THD *thd, SHOW_VAR *var, char *buff) { var->type=SHOW_CHAR; var->value= buff; if (!use_slave_mask || bitmap_is_clear_all(&slave_error_mask)) { var->value= const_cast("OFF"); } else if (bitmap_is_set_all(&slave_error_mask)) { var->value= const_cast("ALL"); } else { /* 10 is enough assuming errors are max 4 digits */ int i; var->value= buff; for (i= 1; i < MAX_SLAVE_ERROR && (buff - var->value) < SHOW_VAR_FUNC_BUFF_SIZE; i++) { if (bitmap_is_set(&slave_error_mask, i)) { buff= int10_to_str(i, buff, 10); *buff++= ','; } } if (var->value != buff) buff--; // Remove last ',' if (i < MAX_SLAVE_ERROR) buff= strmov(buff, "..."); // Couldn't show all errors *buff=0; } return 0; } #endif /* HAVE_REPLICATION */ /* Variables shown by SHOW variables in alphabetical order */ SHOW_VAR init_vars[]= { {"auto_increment_increment", (char*) &sys_auto_increment_increment, SHOW_SYS}, {"auto_increment_offset", (char*) &sys_auto_increment_offset, SHOW_SYS}, {sys_automatic_sp_privileges.name,(char*) &sys_automatic_sp_privileges, SHOW_SYS}, {"back_log", (char*) &back_log, SHOW_LONG}, {sys_basedir.name, (char*) &sys_basedir, SHOW_SYS}, {"bdb_cache_parts", (char*) &berkeley_cache_parts, SHOW_LONG}, {"bdb_cache_size", (char*) &berkeley_cache_size, SHOW_LONGLONG}, {"bdb_home", (char*) &berkeley_home, SHOW_CHAR_PTR}, {"bdb_log_buffer_size", (char*) &berkeley_log_buffer_size, SHOW_LONG}, {"bdb_logdir", (char*) &berkeley_logdir, SHOW_CHAR_PTR}, {"bdb_max_lock", (char*) &berkeley_max_lock, SHOW_LONG}, {"bdb_region_size", (char*) &berkeley_region_size, SHOW_LONG}, {"bdb_shared_data", (char*) &berkeley_shared_data, SHOW_BOOL}, {"bdb_tmpdir", (char*) &berkeley_tmpdir, SHOW_CHAR_PTR}, {sys_binlog_cache_size.name,(char*) &sys_binlog_cache_size, SHOW_SYS}, {sys_binlog_format.name, (char*) &sys_binlog_format, SHOW_SYS}, {sys_bulk_insert_buff_size.name,(char*) &sys_bulk_insert_buff_size,SHOW_SYS}, {sys_character_set_client.name,(char*) &sys_character_set_client, SHOW_SYS}, {sys_character_set_connection.name,(char*) &sys_character_set_connection,SHOW_SYS}, {sys_character_set_database.name, (char*) &sys_character_set_database,SHOW_SYS}, {sys_character_set_filesystem.name,(char*) &sys_character_set_filesystem, SHOW_SYS}, {sys_character_set_results.name,(char*) &sys_character_set_results, SHOW_SYS}, {sys_character_set_server.name, (char*) &sys_character_set_server,SHOW_SYS}, {sys_charset_system.name, (char*) &sys_charset_system, SHOW_SYS}, {"character_sets_dir", mysql_charsets_dir, SHOW_CHAR}, {sys_collation_connection.name,(char*) &sys_collation_connection, SHOW_SYS}, {sys_collation_database.name,(char*) &sys_collation_database, SHOW_SYS}, {sys_collation_server.name,(char*) &sys_collation_server, SHOW_SYS}, {sys_completion_type.name, (char*) &sys_completion_type, SHOW_SYS}, {sys_concurrent_insert.name,(char*) &sys_concurrent_insert, SHOW_SYS}, {sys_connect_timeout.name, (char*) &sys_connect_timeout, SHOW_SYS}, {sys_datadir.name, (char*) &sys_datadir, SHOW_SYS}, {sys_date_format.name, (char*) &sys_date_format, SHOW_SYS}, {sys_datetime_format.name, (char*) &sys_datetime_format, SHOW_SYS}, #ifndef DBUG_OFF {sys_dbug.name, (char*) &sys_dbug, SHOW_SYS}, #endif {sys_default_week_format.name, (char*) &sys_default_week_format, SHOW_SYS}, {sys_delay_key_write.name, (char*) &sys_delay_key_write, SHOW_SYS}, {sys_delayed_insert_limit.name, (char*) &sys_delayed_insert_limit,SHOW_SYS}, {sys_delayed_insert_timeout.name, (char*) &sys_delayed_insert_timeout, SHOW_SYS}, {sys_delayed_queue_size.name,(char*) &sys_delayed_queue_size, SHOW_SYS}, {sys_div_precincrement.name,(char*) &sys_div_precincrement,SHOW_SYS}, {sys_engine_condition_pushdown.name, (char*) &sys_engine_condition_pushdown, SHOW_SYS}, {sys_event_scheduler.name, (char*) &sys_event_scheduler, SHOW_SYS}, {sys_expire_logs_days.name, (char*) &sys_expire_logs_days, SHOW_SYS}, {sys_flush.name, (char*) &sys_flush, SHOW_SYS}, {sys_flush_time.name, (char*) &sys_flush_time, SHOW_SYS}, {sys_ft_boolean_syntax.name,(char*) &ft_boolean_syntax, SHOW_CHAR}, {"ft_max_word_len", (char*) &ft_max_word_len, SHOW_LONG}, {"ft_min_word_len", (char*) &ft_min_word_len, SHOW_LONG}, {"ft_query_expansion_limit",(char*) &ft_query_expansion_limit, SHOW_LONG}, {"ft_stopword_file", (char*) &ft_stopword_file, SHOW_CHAR_PTR}, {sys_group_concat_max_len.name, (char*) &sys_group_concat_max_len, SHOW_SYS}, {sys_have_archive_db.name, (char*) &have_archive_db, SHOW_HAVE}, {sys_have_berkeley_db.name, (char*) &have_berkeley_db, SHOW_HAVE}, {sys_have_blackhole_db.name,(char*) &have_blackhole_db, SHOW_HAVE}, {sys_have_compress.name, (char*) &have_compress, SHOW_HAVE}, {sys_have_crypt.name, (char*) &have_crypt, SHOW_HAVE}, {sys_have_csv_db.name, (char*) &have_csv_db, SHOW_HAVE}, {sys_have_dlopen.name, (char*) &have_dlopen, SHOW_HAVE}, {sys_have_example_db.name, (char*) &have_example_db, SHOW_HAVE}, {sys_have_federated_db.name,(char*) &have_federated_db, SHOW_HAVE}, {sys_have_geometry.name, (char*) &have_geometry, SHOW_HAVE}, {sys_have_innodb.name, (char*) &have_innodb, SHOW_HAVE}, {sys_have_ndbcluster.name, (char*) &have_ndbcluster, SHOW_HAVE}, {sys_have_openssl.name, (char*) &have_openssl, SHOW_HAVE}, {sys_have_partition_db.name,(char*) &have_partition_db, SHOW_HAVE}, {sys_have_query_cache.name, (char*) &have_query_cache, SHOW_HAVE}, {sys_have_row_based_replication.name, (char*) &have_row_based_replication, SHOW_HAVE}, {sys_have_rtree_keys.name, (char*) &have_rtree_keys, SHOW_HAVE}, {sys_have_symlink.name, (char*) &have_symlink, SHOW_HAVE}, {"init_connect", (char*) &sys_init_connect, SHOW_SYS}, {"init_file", (char*) &opt_init_file, SHOW_CHAR_PTR}, {"init_slave", (char*) &sys_init_slave, SHOW_SYS}, {"innodb_additional_mem_pool_size", (char*) &innobase_additional_mem_pool_size, SHOW_LONG }, {sys_innodb_autoextend_increment.name, (char*) &sys_innodb_autoextend_increment, SHOW_SYS}, {"innodb_buffer_pool_awe_mem_mb", (char*) &innobase_buffer_pool_awe_mem_mb, SHOW_LONG }, {"innodb_buffer_pool_size", (char*) &innobase_buffer_pool_size, SHOW_LONGLONG }, {"innodb_checksums", (char*) &innobase_use_checksums, SHOW_MY_BOOL}, {sys_innodb_commit_concurrency.name, (char*) &sys_innodb_commit_concurrency, SHOW_SYS}, {sys_innodb_concurrency_tickets.name, (char*) &sys_innodb_concurrency_tickets, SHOW_SYS}, {"innodb_data_file_path", (char*) &innobase_data_file_path, SHOW_CHAR_PTR}, {"innodb_data_home_dir", (char*) &innobase_data_home_dir, SHOW_CHAR_PTR}, {"innodb_doublewrite", (char*) &innobase_use_doublewrite, SHOW_MY_BOOL}, {sys_innodb_fast_shutdown.name,(char*) &sys_innodb_fast_shutdown, SHOW_SYS}, {"innodb_file_io_threads", (char*) &innobase_file_io_threads, SHOW_LONG }, {"innodb_file_per_table", (char*) &innobase_file_per_table, SHOW_MY_BOOL}, {"innodb_flush_log_at_trx_commit", (char*) &innobase_flush_log_at_trx_commit, SHOW_INT}, {"innodb_flush_method", (char*) &innobase_unix_file_flush_method, SHOW_CHAR_PTR}, {"innodb_force_recovery", (char*) &innobase_force_recovery, SHOW_LONG }, {"innodb_lock_wait_timeout", (char*) &innobase_lock_wait_timeout, SHOW_LONG }, {"innodb_locks_unsafe_for_binlog", (char*) &innobase_locks_unsafe_for_binlog, SHOW_MY_BOOL}, {"innodb_log_arch_dir", (char*) &innobase_log_arch_dir, SHOW_CHAR_PTR}, {"innodb_log_archive", (char*) &innobase_log_archive, SHOW_MY_BOOL}, {"innodb_log_buffer_size", (char*) &innobase_log_buffer_size, SHOW_LONG }, {"innodb_log_file_size", (char*) &innobase_log_file_size, SHOW_LONGLONG}, {"innodb_log_files_in_group", (char*) &innobase_log_files_in_group, SHOW_LONG}, {"innodb_log_group_home_dir", (char*) &innobase_log_group_home_dir, SHOW_CHAR_PTR}, {sys_innodb_max_dirty_pages_pct.name, (char*) &sys_innodb_max_dirty_pages_pct, SHOW_SYS}, {sys_innodb_max_purge_lag.name, (char*) &sys_innodb_max_purge_lag, SHOW_SYS}, {"innodb_mirrored_log_groups", (char*) &innobase_mirrored_log_groups, SHOW_LONG}, {"innodb_open_files", (char*) &innobase_open_files, SHOW_LONG }, {sys_innodb_support_xa.name, (char*) &sys_innodb_support_xa, SHOW_SYS}, {sys_innodb_sync_spin_loops.name, (char*) &sys_innodb_sync_spin_loops, SHOW_SYS}, {sys_innodb_table_locks.name, (char*) &sys_innodb_table_locks, SHOW_SYS}, {sys_innodb_thread_concurrency.name, (char*) &sys_innodb_thread_concurrency, SHOW_SYS}, {sys_innodb_thread_sleep_delay.name, (char*) &sys_innodb_thread_sleep_delay, SHOW_SYS}, {sys_interactive_timeout.name,(char*) &sys_interactive_timeout, SHOW_SYS}, {sys_join_buffer_size.name, (char*) &sys_join_buffer_size, SHOW_SYS}, {sys_key_buffer_size.name, (char*) &sys_key_buffer_size, SHOW_SYS}, {sys_key_cache_age_threshold.name, (char*) &sys_key_cache_age_threshold, SHOW_SYS}, {sys_key_cache_block_size.name, (char*) &sys_key_cache_block_size, SHOW_SYS}, {sys_key_cache_division_limit.name, (char*) &sys_key_cache_division_limit, SHOW_SYS}, {"language", language, SHOW_CHAR}, {"large_files_support", (char*) &opt_large_files, SHOW_BOOL}, {"large_page_size", (char*) &opt_large_page_size, SHOW_INT}, {"large_pages", (char*) &opt_large_pages, SHOW_MY_BOOL}, {sys_license.name, (char*) &sys_license, SHOW_SYS}, {sys_local_infile.name, (char*) &sys_local_infile, SHOW_SYS}, #ifdef HAVE_MLOCKALL {"locked_in_memory", (char*) &locked_in_memory, SHOW_BOOL}, #endif {"log", (char*) &opt_log, SHOW_BOOL}, {"log_bin", (char*) &opt_bin_log, SHOW_BOOL}, {sys_trust_function_creators.name,(char*) &sys_trust_function_creators, SHOW_SYS}, {"log_error", (char*) log_error_file, SHOW_CHAR}, {sys_log_queries_not_using_indexes.name, (char*) &sys_log_queries_not_using_indexes, SHOW_SYS}, #ifdef HAVE_REPLICATION {"log_slave_updates", (char*) &opt_log_slave_updates, SHOW_MY_BOOL}, #endif {"log_slow_queries", (char*) &opt_slow_log, SHOW_BOOL}, {sys_log_warnings.name, (char*) &sys_log_warnings, SHOW_SYS}, {sys_long_query_time.name, (char*) &sys_long_query_time, SHOW_SYS}, {sys_low_priority_updates.name, (char*) &sys_low_priority_updates, SHOW_SYS}, {"lower_case_file_system", (char*) &lower_case_file_system, SHOW_MY_BOOL}, {"lower_case_table_names", (char*) &lower_case_table_names, SHOW_INT}, {sys_max_allowed_packet.name,(char*) &sys_max_allowed_packet, SHOW_SYS}, {sys_max_binlog_cache_size.name,(char*) &sys_max_binlog_cache_size, SHOW_SYS}, {sys_max_binlog_size.name, (char*) &sys_max_binlog_size, SHOW_SYS}, {sys_max_connect_errors.name, (char*) &sys_max_connect_errors, SHOW_SYS}, {sys_max_connections.name, (char*) &sys_max_connections, SHOW_SYS}, {sys_max_delayed_threads.name,(char*) &sys_max_delayed_threads, SHOW_SYS}, {sys_max_error_count.name, (char*) &sys_max_error_count, SHOW_SYS}, {sys_max_heap_table_size.name,(char*) &sys_max_heap_table_size, SHOW_SYS}, {sys_max_insert_delayed_threads.name, (char*) &sys_max_insert_delayed_threads, SHOW_SYS}, {sys_max_join_size.name, (char*) &sys_max_join_size, SHOW_SYS}, {sys_max_length_for_sort_data.name, (char*) &sys_max_length_for_sort_data, SHOW_SYS}, {sys_max_prepared_stmt_count.name, (char*) &sys_max_prepared_stmt_count, SHOW_SYS}, {sys_max_relay_log_size.name, (char*) &sys_max_relay_log_size, SHOW_SYS}, {sys_max_seeks_for_key.name, (char*) &sys_max_seeks_for_key, SHOW_SYS}, {sys_max_sort_length.name, (char*) &sys_max_sort_length, SHOW_SYS}, {sys_max_sp_recursion_depth.name, (char*) &sys_max_sp_recursion_depth, SHOW_SYS}, {sys_max_tmp_tables.name, (char*) &sys_max_tmp_tables, SHOW_SYS}, {sys_max_user_connections.name,(char*) &sys_max_user_connections, SHOW_SYS}, {sys_max_write_lock_count.name, (char*) &sys_max_write_lock_count,SHOW_SYS}, {sys_multi_range_count.name, (char*) &sys_multi_range_count, SHOW_SYS}, {sys_myisam_data_pointer_size.name, (char*) &sys_myisam_data_pointer_size, SHOW_SYS}, {sys_myisam_max_sort_file_size.name, (char*) &sys_myisam_max_sort_file_size, SHOW_SYS}, {"myisam_recover_options", (char*) &myisam_recover_options_str, SHOW_CHAR_PTR}, {sys_myisam_repair_threads.name, (char*) &sys_myisam_repair_threads, SHOW_SYS}, {sys_myisam_sort_buffer_size.name, (char*) &sys_myisam_sort_buffer_size, SHOW_SYS}, {sys_myisam_stats_method.name, (char*) &sys_myisam_stats_method, SHOW_SYS}, {sys_myisam_use_mmap.name, (char*) &sys_myisam_use_mmap, SHOW_SYS}, #ifdef __NT__ {"named_pipe", (char*) &opt_enable_named_pipe, SHOW_MY_BOOL}, #endif {sys_ndb_autoincrement_prefetch_sz.name, (char*) &sys_ndb_autoincrement_prefetch_sz, SHOW_SYS}, {sys_ndb_cache_check_time.name,(char*) &sys_ndb_cache_check_time, SHOW_SYS}, {sys_ndb_extra_logging.name,(char*) &sys_ndb_extra_logging, SHOW_SYS}, {sys_ndb_force_send.name, (char*) &sys_ndb_force_send, SHOW_SYS}, {sys_ndb_index_stat_cache_entries.name, (char*) &sys_ndb_index_stat_cache_entries, SHOW_SYS}, {sys_ndb_index_stat_enable.name, (char*) &sys_ndb_index_stat_enable, SHOW_SYS}, {sys_ndb_index_stat_update_freq.name, (char*) &sys_ndb_index_stat_update_freq, SHOW_SYS}, #ifdef HAVE_NDB_BINLOG {sys_ndb_report_thresh_binlog_epoch_slip.name, (char*) &sys_ndb_report_thresh_binlog_epoch_slip, SHOW_SYS}, {sys_ndb_report_thresh_binlog_mem_usage.name, (char*) &sys_ndb_report_thresh_binlog_mem_usage, SHOW_SYS}, #endif {sys_ndb_use_exact_count.name,(char*) &sys_ndb_use_exact_count, SHOW_SYS}, {sys_ndb_use_transactions.name,(char*) &sys_ndb_use_transactions, SHOW_SYS}, {sys_net_buffer_length.name,(char*) &sys_net_buffer_length, SHOW_SYS}, {sys_net_read_timeout.name, (char*) &sys_net_read_timeout, SHOW_SYS}, {sys_net_retry_count.name, (char*) &sys_net_retry_count, SHOW_SYS}, {sys_net_write_timeout.name,(char*) &sys_net_write_timeout, SHOW_SYS}, {sys_new_mode.name, (char*) &sys_new_mode, SHOW_SYS}, {sys_old_alter_table.name, (char*) &sys_old_alter_table, SHOW_SYS}, {sys_old_passwords.name, (char*) &sys_old_passwords, SHOW_SYS}, {"open_files_limit", (char*) &open_files_limit, SHOW_LONG}, {sys_optimizer_prune_level.name, (char*) &sys_optimizer_prune_level, SHOW_SYS}, {sys_optimizer_search_depth.name,(char*) &sys_optimizer_search_depth, SHOW_SYS}, {"pid_file", (char*) pidfile_name, SHOW_CHAR}, {"plugin_dir", (char*) opt_plugin_dir, SHOW_CHAR}, {"port", (char*) &mysqld_port, SHOW_INT}, {sys_preload_buff_size.name, (char*) &sys_preload_buff_size, SHOW_SYS}, {sys_prepared_stmt_count.name, (char*) &sys_prepared_stmt_count, SHOW_SYS}, {"protocol_version", (char*) &protocol_version, SHOW_INT}, {sys_query_alloc_block_size.name, (char*) &sys_query_alloc_block_size, SHOW_SYS}, #ifdef HAVE_QUERY_CACHE {sys_query_cache_limit.name,(char*) &sys_query_cache_limit, SHOW_SYS}, {sys_query_cache_min_res_unit.name, (char*) &sys_query_cache_min_res_unit, SHOW_SYS}, {sys_query_cache_size.name, (char*) &sys_query_cache_size, SHOW_SYS}, {sys_query_cache_type.name, (char*) &sys_query_cache_type, SHOW_SYS}, {sys_query_cache_wlock_invalidate.name, (char *) &sys_query_cache_wlock_invalidate, SHOW_SYS}, #endif /* HAVE_QUERY_CACHE */ {sys_query_prealloc_size.name, (char*) &sys_query_prealloc_size, SHOW_SYS}, {sys_range_alloc_block_size.name, (char*) &sys_range_alloc_block_size, SHOW_SYS}, {sys_read_buff_size.name, (char*) &sys_read_buff_size, SHOW_SYS}, {sys_readonly.name, (char*) &sys_readonly, SHOW_SYS}, {sys_read_rnd_buff_size.name,(char*) &sys_read_rnd_buff_size, SHOW_SYS}, #ifdef HAVE_REPLICATION {sys_relay_log_purge.name, (char*) &sys_relay_log_purge, SHOW_SYS}, {"relay_log_space_limit", (char*) &relay_log_space_limit, SHOW_LONGLONG}, #endif {sys_rpl_recovery_rank.name,(char*) &sys_rpl_recovery_rank, SHOW_SYS}, {"secure_auth", (char*) &sys_secure_auth, SHOW_SYS}, #ifdef HAVE_SMEM {"shared_memory", (char*) &opt_enable_shared_memory, SHOW_MY_BOOL}, {"shared_memory_base_name", (char*) &shared_memory_base_name, SHOW_CHAR_PTR}, #endif {sys_server_id.name, (char*) &sys_server_id, SHOW_SYS}, {"skip_external_locking", (char*) &my_disable_locking, SHOW_MY_BOOL}, {"skip_networking", (char*) &opt_disable_networking, SHOW_BOOL}, {"skip_show_database", (char*) &opt_skip_show_db, SHOW_BOOL}, #ifdef HAVE_REPLICATION {sys_slave_compressed_protocol.name, (char*) &sys_slave_compressed_protocol, SHOW_SYS}, {"slave_load_tmpdir", (char*) &slave_load_tmpdir, SHOW_CHAR_PTR}, {sys_slave_net_timeout.name,(char*) &sys_slave_net_timeout, SHOW_SYS}, {"slave_skip_errors", (char*) &show_slave_skip_errors, SHOW_FUNC}, {sys_slave_trans_retries.name,(char*) &sys_slave_trans_retries, SHOW_SYS}, #endif {sys_slow_launch_time.name, (char*) &sys_slow_launch_time, SHOW_SYS}, #ifdef HAVE_SYS_UN_H {"socket", (char*) &mysqld_unix_port, SHOW_CHAR_PTR}, #endif {sys_sort_buffer.name, (char*) &sys_sort_buffer, SHOW_SYS}, {sys_big_selects.name, (char*) &sys_big_selects, SHOW_SYS}, {sys_sql_mode.name, (char*) &sys_sql_mode, SHOW_SYS}, {"sql_notes", (char*) &sys_sql_notes, SHOW_SYS}, {"sql_warnings", (char*) &sys_sql_warnings, SHOW_SYS}, {sys_ssl_ca.name, (char*) &sys_ssl_ca, SHOW_SYS}, {sys_ssl_capath.name, (char*) &sys_ssl_capath, SHOW_SYS}, {sys_ssl_cert.name, (char*) &sys_ssl_cert, SHOW_SYS}, {sys_ssl_cipher.name, (char*) &sys_ssl_cipher, SHOW_SYS}, {sys_ssl_key.name, (char*) &sys_ssl_key, SHOW_SYS}, {sys_storage_engine.name, (char*) &sys_storage_engine, SHOW_SYS}, #ifdef HAVE_REPLICATION {sys_sync_binlog_period.name,(char*) &sys_sync_binlog_period, SHOW_SYS}, #endif {sys_sync_frm.name, (char*) &sys_sync_frm, SHOW_SYS}, #ifdef HAVE_TZNAME {"system_time_zone", system_time_zone, SHOW_CHAR}, #endif {"table_definition_cache", (char*) &table_def_size, SHOW_LONG}, {"table_lock_wait_timeout", (char*) &table_lock_wait_timeout, SHOW_LONG }, {"table_open_cache", (char*) &table_cache_size, SHOW_LONG}, {sys_table_type.name, (char*) &sys_table_type, SHOW_SYS}, {sys_thread_cache_size.name,(char*) &sys_thread_cache_size, SHOW_SYS}, #ifdef HAVE_THR_SETCONCURRENCY {"thread_concurrency", (char*) &concurrency, SHOW_LONG}, #endif {"thread_stack", (char*) &thread_stack, SHOW_LONG}, {sys_time_format.name, (char*) &sys_time_format, SHOW_SYS}, {"time_zone", (char*) &sys_time_zone, SHOW_SYS}, {sys_timed_mutexes.name, (char*) &sys_timed_mutexes, SHOW_SYS}, {sys_tmp_table_size.name, (char*) &sys_tmp_table_size, SHOW_SYS}, {sys_tmpdir.name, (char*) &sys_tmpdir, SHOW_SYS}, {sys_trans_alloc_block_size.name, (char*) &sys_trans_alloc_block_size, SHOW_SYS}, {sys_trans_prealloc_size.name, (char*) &sys_trans_prealloc_size, SHOW_SYS}, {sys_tx_isolation.name, (char*) &sys_tx_isolation, SHOW_SYS}, {sys_updatable_views_with_limit.name, (char*) &sys_updatable_views_with_limit,SHOW_SYS}, {sys_version.name, (char*) &sys_version, SHOW_SYS}, {sys_version_comment.name, (char*) &sys_version_comment, SHOW_SYS}, {sys_version_compile_machine.name, (char*) &sys_version_compile_machine, SHOW_SYS}, {sys_version_compile_os.name, (char*) &sys_version_compile_os, SHOW_SYS}, {sys_net_wait_timeout.name, (char*) &sys_net_wait_timeout, SHOW_SYS}, {NullS, NullS, SHOW_LONG} }; bool sys_var::check(THD *thd, set_var *var) { var->save_result.ulonglong_value= var->value->val_int(); return 0; } bool sys_var_str::check(THD *thd, set_var *var) { int res; if (!check_func) return 0; if ((res=(*check_func)(thd, var)) < 0) my_error(ER_WRONG_VALUE_FOR_VAR, MYF(0), name, var->value->str_value.ptr()); return res; } /* Functions to check and update variables */ /* Update variables 'init_connect, init_slave'. In case of 'DEFAULT' value (for example: 'set GLOBAL init_connect=DEFAULT') 'var' parameter is NULL pointer. */ bool update_sys_var_str(sys_var_str *var_str, rw_lock_t *var_mutex, set_var *var) { char *res= 0, *old_value=(char *)(var ? var->value->str_value.ptr() : 0); uint new_length= (var ? var->value->str_value.length() : 0); if (!old_value) old_value= (char*) ""; if (!(res= my_strndup((byte*)old_value, new_length, MYF(0)))) return 1; /* Replace the old value in such a way that the any thread using the value will work. */ rw_wrlock(var_mutex); old_value= var_str->value; var_str->value= res; var_str->value_length= new_length; rw_unlock(var_mutex); my_free(old_value, MYF(MY_ALLOW_ZERO_PTR)); return 0; } static bool sys_update_init_connect(THD *thd, set_var *var) { return update_sys_var_str(&sys_init_connect, &LOCK_sys_init_connect, var); } static void sys_default_init_connect(THD* thd, enum_var_type type) { update_sys_var_str(&sys_init_connect, &LOCK_sys_init_connect, 0); } static bool sys_update_init_slave(THD *thd, set_var *var) { return update_sys_var_str(&sys_init_slave, &LOCK_sys_init_slave, var); } static void sys_default_init_slave(THD* thd, enum_var_type type) { update_sys_var_str(&sys_init_slave, &LOCK_sys_init_slave, 0); } static int sys_check_ftb_syntax(THD *thd, set_var *var) { if (thd->security_ctx->master_access & SUPER_ACL) return (ft_boolean_check_syntax_string((byte*) var->value->str_value.c_ptr()) ? -1 : 0); else { my_error(ER_SPECIFIC_ACCESS_DENIED_ERROR, MYF(0), "SUPER"); return 1; } } static bool sys_update_ftb_syntax(THD *thd, set_var * var) { strmake(ft_boolean_syntax, var->value->str_value.c_ptr(), sizeof(ft_boolean_syntax)-1); return 0; } static void sys_default_ftb_syntax(THD *thd, enum_var_type type) { strmake(ft_boolean_syntax, def_ft_boolean_syntax, sizeof(ft_boolean_syntax)-1); } /* If one sets the LOW_PRIORIY UPDATES flag, we also must change the used lock type */ static void fix_low_priority_updates(THD *thd, enum_var_type type) { if (type != OPT_GLOBAL) thd->update_lock_default= (thd->variables.low_priority_updates ? TL_WRITE_LOW_PRIORITY : TL_WRITE); } static void fix_myisam_max_sort_file_size(THD *thd, enum_var_type type) { myisam_max_temp_length= (my_off_t) global_system_variables.myisam_max_sort_file_size; } /* Set the OPTION_BIG_SELECTS flag if max_join_size == HA_POS_ERROR */ static void fix_max_join_size(THD *thd, enum_var_type type) { if (type != OPT_GLOBAL) { if (thd->variables.max_join_size == HA_POS_ERROR) thd->options|= OPTION_BIG_SELECTS; else thd->options&= ~OPTION_BIG_SELECTS; } } /* Can't change the 'next' tx_isolation while we are already in a transaction */ static int check_tx_isolation(THD *thd, set_var *var) { if (var->type == OPT_DEFAULT && (thd->server_status & SERVER_STATUS_IN_TRANS)) { my_error(ER_CANT_CHANGE_TX_ISOLATION, MYF(0)); return 1; } return 0; } /* If one doesn't use the SESSION modifier, the isolation level is only active for the next command */ static void fix_tx_isolation(THD *thd, enum_var_type type) { if (type == OPT_SESSION) thd->session_tx_isolation= ((enum_tx_isolation) thd->variables.tx_isolation); } static void fix_completion_type(THD *thd __attribute__(unused), enum_var_type type __attribute__(unused)) {} static int check_completion_type(THD *thd, set_var *var) { longlong val= var->value->val_int(); if (val < 0 || val > 2) { char buf[64]; my_error(ER_WRONG_VALUE_FOR_VAR, MYF(0), var->var->name, llstr(val, buf)); return 1; } return 0; } /* If we are changing the thread variable, we have to copy it to NET too */ #ifdef HAVE_REPLICATION static void fix_net_read_timeout(THD *thd, enum_var_type type) { if (type != OPT_GLOBAL) thd->net.read_timeout=thd->variables.net_read_timeout; } static void fix_net_write_timeout(THD *thd, enum_var_type type) { if (type != OPT_GLOBAL) thd->net.write_timeout=thd->variables.net_write_timeout; } static void fix_net_retry_count(THD *thd, enum_var_type type) { if (type != OPT_GLOBAL) thd->net.retry_count=thd->variables.net_retry_count; } #else /* HAVE_REPLICATION */ static void fix_net_read_timeout(THD *thd __attribute__(unused), enum_var_type type __attribute__(unused)) {} static void fix_net_write_timeout(THD *thd __attribute__(unused), enum_var_type type __attribute__(unused)) {} static void fix_net_retry_count(THD *thd __attribute__(unused), enum_var_type type __attribute__(unused)) {} #endif /* HAVE_REPLICATION */ static void fix_query_cache_size(THD *thd, enum_var_type type) { #ifdef HAVE_QUERY_CACHE ulong requested= query_cache_size; query_cache.resize(query_cache_size); if (requested != query_cache_size) push_warning_printf(current_thd, MYSQL_ERROR::WARN_LEVEL_WARN, ER_WARN_QC_RESIZE, ER(ER_WARN_QC_RESIZE), requested, query_cache_size); #endif } #ifdef HAVE_QUERY_CACHE static void fix_query_cache_min_res_unit(THD *thd, enum_var_type type) { query_cache_min_res_unit= query_cache.set_min_res_unit(query_cache_min_res_unit); } #endif extern void fix_delay_key_write(THD *thd, enum_var_type type) { switch ((enum_delay_key_write) delay_key_write_options) { case DELAY_KEY_WRITE_NONE: myisam_delay_key_write=0; break; case DELAY_KEY_WRITE_ON: myisam_delay_key_write=1; break; case DELAY_KEY_WRITE_ALL: myisam_delay_key_write=1; ha_open_options|= HA_OPEN_DELAY_KEY_WRITE; break; } } bool sys_var_thd_binlog_format::is_readonly() const { /* Under certain circumstances, the variable is read-only (unchangeable): */ THD *thd= current_thd; /* If RBR and open temporary tables, their CREATE TABLE may not be in the binlog, so we can't toggle to SBR in this connection. The test below will also prevent SET GLOBAL, well it was not easy to test if global or not here. And this test will also prevent switching from RBR to RBR (a no-op which should not happen too often). */ #ifdef HAVE_ROW_BASED_REPLICATION if ((thd->variables.binlog_format == BINLOG_FORMAT_ROW) && thd->temporary_tables) { my_error(ER_TEMP_TABLE_PREVENTS_SWITCH_OUT_OF_RBR, MYF(0)); return 1; } #endif /*HAVE_ROW_BASED_REPLICATION*/ /* if in a stored function, it's too late to change mode */ if (thd->spcont && thd->prelocked_mode) { my_error(ER_STORED_FUNCTION_PREVENTS_SWITCH_BINLOG_FORMAT, MYF(0)); return 1; } #ifdef HAVE_NDB_BINLOG /* Cluster does not support changing the binlog format on the fly yet. */ if (opt_bin_log && (have_ndbcluster == SHOW_OPTION_YES)) { my_error(ER_NDB_CANT_SWITCH_BINLOG_FORMAT, MYF(0)); return 1; } #endif return sys_var_thd_enum::is_readonly(); } void fix_binlog_format_after_update(THD *thd, enum_var_type type) { #ifdef HAVE_ROW_BASED_REPLICATION thd->reset_current_stmt_binlog_row_based(); #endif /*HAVE_ROW_BASED_REPLICATION*/ } static void fix_max_binlog_size(THD *thd, enum_var_type type) { DBUG_ENTER("fix_max_binlog_size"); DBUG_PRINT("info",("max_binlog_size=%lu max_relay_log_size=%lu", max_binlog_size, max_relay_log_size)); mysql_bin_log.set_max_size(max_binlog_size); #ifdef HAVE_REPLICATION if (!max_relay_log_size) active_mi->rli.relay_log.set_max_size(max_binlog_size); #endif DBUG_VOID_RETURN; } static void fix_max_relay_log_size(THD *thd, enum_var_type type) { DBUG_ENTER("fix_max_relay_log_size"); DBUG_PRINT("info",("max_binlog_size=%lu max_relay_log_size=%lu", max_binlog_size, max_relay_log_size)); #ifdef HAVE_REPLICATION active_mi->rli.relay_log.set_max_size(max_relay_log_size ? max_relay_log_size: max_binlog_size); #endif DBUG_VOID_RETURN; } static int check_max_delayed_threads(THD *thd, set_var *var) { longlong val= var->value->val_int(); if (var->type != OPT_GLOBAL && val != 0 && val != (longlong) global_system_variables.max_insert_delayed_threads) { char buf[64]; my_error(ER_WRONG_VALUE_FOR_VAR, MYF(0), var->var->name, llstr(val, buf)); return 1; } return 0; } static void fix_max_connections(THD *thd, enum_var_type type) { #ifndef EMBEDDED_LIBRARY resize_thr_alarm(max_connections + global_system_variables.max_insert_delayed_threads + 10); #endif } static void fix_thd_mem_root(THD *thd, enum_var_type type) { if (type != OPT_GLOBAL) reset_root_defaults(thd->mem_root, thd->variables.query_alloc_block_size, thd->variables.query_prealloc_size); } static void fix_trans_mem_root(THD *thd, enum_var_type type) { #ifdef USING_TRANSACTIONS if (type != OPT_GLOBAL) reset_root_defaults(&thd->transaction.mem_root, thd->variables.trans_alloc_block_size, thd->variables.trans_prealloc_size); #endif } static void fix_server_id(THD *thd, enum_var_type type) { server_id_supplied = 1; } sys_var_long_ptr:: sys_var_long_ptr(const char *name_arg, ulong *value_ptr, sys_after_update_func after_update_arg) :sys_var_long_ptr_global(name_arg, value_ptr, &LOCK_global_system_variables, after_update_arg) {} bool sys_var_long_ptr_global::check(THD *thd, set_var *var) { longlong v= var->value->val_int(); var->save_result.ulonglong_value= v < 0 ? 0 : v; return 0; } bool sys_var_long_ptr_global::update(THD *thd, set_var *var) { ulonglong tmp= var->save_result.ulonglong_value; pthread_mutex_lock(guard); if (option_limits) *value= (ulong) getopt_ull_limit_value(tmp, option_limits); else *value= (ulong) tmp; pthread_mutex_unlock(guard); return 0; } void sys_var_long_ptr_global::set_default(THD *thd, enum_var_type type) { pthread_mutex_lock(guard); *value= (ulong) option_limits->def_value; pthread_mutex_unlock(guard); } bool sys_var_ulonglong_ptr::update(THD *thd, set_var *var) { ulonglong tmp= var->save_result.ulonglong_value; pthread_mutex_lock(&LOCK_global_system_variables); if (option_limits) *value= (ulonglong) getopt_ull_limit_value(tmp, option_limits); else *value= (ulonglong) tmp; pthread_mutex_unlock(&LOCK_global_system_variables); return 0; } void sys_var_ulonglong_ptr::set_default(THD *thd, enum_var_type type) { pthread_mutex_lock(&LOCK_global_system_variables); *value= (ulonglong) option_limits->def_value; pthread_mutex_unlock(&LOCK_global_system_variables); } bool sys_var_bool_ptr::update(THD *thd, set_var *var) { *value= (my_bool) var->save_result.ulong_value; return 0; } void sys_var_bool_ptr::set_default(THD *thd, enum_var_type type) { *value= (my_bool) option_limits->def_value; } bool sys_var_enum::update(THD *thd, set_var *var) { *value= (uint) var->save_result.ulong_value; return 0; } byte *sys_var_enum::value_ptr(THD *thd, enum_var_type type, LEX_STRING *base) { return (byte*) enum_names->type_names[*value]; } bool sys_var_thd_ulong::check(THD *thd, set_var *var) { return (sys_var_thd::check(thd, var) || (check_func && (*check_func)(thd, var))); } bool sys_var_thd_ulong::update(THD *thd, set_var *var) { ulonglong tmp= var->save_result.ulonglong_value; /* Don't use bigger value than given with --maximum-variable-name=.. */ if ((ulong) tmp > max_system_variables.*offset) tmp= max_system_variables.*offset; #if SIZEOF_LONG == 4 /* Avoid overflows on 32 bit systems */ if (tmp > (ulonglong) ~(ulong) 0) tmp= ((ulonglong) ~(ulong) 0); #endif if (option_limits) tmp= (ulong) getopt_ull_limit_value(tmp, option_limits); if (var->type == OPT_GLOBAL) global_system_variables.*offset= (ulong) tmp; else thd->variables.*offset= (ulong) tmp; return 0; } void sys_var_thd_ulong::set_default(THD *thd, enum_var_type type) { if (type == OPT_GLOBAL) { /* We will not come here if option_limits is not set */ global_system_variables.*offset= (ulong) option_limits->def_value; } else thd->variables.*offset= global_system_variables.*offset; } byte *sys_var_thd_ulong::value_ptr(THD *thd, enum_var_type type, LEX_STRING *base) { if (type == OPT_GLOBAL) return (byte*) &(global_system_variables.*offset); return (byte*) &(thd->variables.*offset); } bool sys_var_thd_ha_rows::update(THD *thd, set_var *var) { ulonglong tmp= var->save_result.ulonglong_value; /* Don't use bigger value than given with --maximum-variable-name=.. */ if ((ha_rows) tmp > max_system_variables.*offset) tmp= max_system_variables.*offset; if (option_limits) tmp= (ha_rows) getopt_ull_limit_value(tmp, option_limits); if (var->type == OPT_GLOBAL) { /* Lock is needed to make things safe on 32 bit systems */ pthread_mutex_lock(&LOCK_global_system_variables); global_system_variables.*offset= (ha_rows) tmp; pthread_mutex_unlock(&LOCK_global_system_variables); } else thd->variables.*offset= (ha_rows) tmp; return 0; } void sys_var_thd_ha_rows::set_default(THD *thd, enum_var_type type) { if (type == OPT_GLOBAL) { /* We will not come here if option_limits is not set */ pthread_mutex_lock(&LOCK_global_system_variables); global_system_variables.*offset= (ha_rows) option_limits->def_value; pthread_mutex_unlock(&LOCK_global_system_variables); } else thd->variables.*offset= global_system_variables.*offset; } byte *sys_var_thd_ha_rows::value_ptr(THD *thd, enum_var_type type, LEX_STRING *base) { if (type == OPT_GLOBAL) return (byte*) &(global_system_variables.*offset); return (byte*) &(thd->variables.*offset); } bool sys_var_thd_ulonglong::update(THD *thd, set_var *var) { ulonglong tmp= var->save_result.ulonglong_value; if (tmp > max_system_variables.*offset) tmp= max_system_variables.*offset; if (option_limits) tmp= getopt_ull_limit_value(tmp, option_limits); if (var->type == OPT_GLOBAL) { /* Lock is needed to make things safe on 32 bit systems */ pthread_mutex_lock(&LOCK_global_system_variables); global_system_variables.*offset= (ulonglong) tmp; pthread_mutex_unlock(&LOCK_global_system_variables); } else thd->variables.*offset= (ulonglong) tmp; return 0; } void sys_var_thd_ulonglong::set_default(THD *thd, enum_var_type type) { if (type == OPT_GLOBAL) { pthread_mutex_lock(&LOCK_global_system_variables); global_system_variables.*offset= (ulonglong) option_limits->def_value; pthread_mutex_unlock(&LOCK_global_system_variables); } else thd->variables.*offset= global_system_variables.*offset; } byte *sys_var_thd_ulonglong::value_ptr(THD *thd, enum_var_type type, LEX_STRING *base) { if (type == OPT_GLOBAL) return (byte*) &(global_system_variables.*offset); return (byte*) &(thd->variables.*offset); } bool sys_var_thd_bool::update(THD *thd, set_var *var) { if (var->type == OPT_GLOBAL) global_system_variables.*offset= (my_bool) var->save_result.ulong_value; else thd->variables.*offset= (my_bool) var->save_result.ulong_value; return 0; } void sys_var_thd_bool::set_default(THD *thd, enum_var_type type) { if (type == OPT_GLOBAL) global_system_variables.*offset= (my_bool) option_limits->def_value; else thd->variables.*offset= global_system_variables.*offset; } byte *sys_var_thd_bool::value_ptr(THD *thd, enum_var_type type, LEX_STRING *base) { if (type == OPT_GLOBAL) return (byte*) &(global_system_variables.*offset); return (byte*) &(thd->variables.*offset); } bool sys_var::check_enum(THD *thd, set_var *var, TYPELIB *enum_names) { char buff[STRING_BUFFER_USUAL_SIZE]; const char *value; String str(buff, sizeof(buff), system_charset_info), *res; if (var->value->result_type() == STRING_RESULT) { if (!(res=var->value->val_str(&str)) || ((long) (var->save_result.ulong_value= (ulong) find_type(enum_names, res->ptr(), res->length(),1)-1)) < 0) { value= res ? res->c_ptr() : "NULL"; goto err; } } else { ulonglong tmp=var->value->val_int(); if (tmp >= enum_names->count) { llstr(tmp,buff); value=buff; // Wrong value is here goto err; } var->save_result.ulong_value= (ulong) tmp; // Save for update } return 0; err: my_error(ER_WRONG_VALUE_FOR_VAR, MYF(0), name, value); return 1; } bool sys_var::check_set(THD *thd, set_var *var, TYPELIB *enum_names) { bool not_used; char buff[STRING_BUFFER_USUAL_SIZE], *error= 0; uint error_len= 0; String str(buff, sizeof(buff), system_charset_info), *res; if (var->value->result_type() == STRING_RESULT) { if (!(res= var->value->val_str(&str))) { strmov(buff, "NULL"); goto err; } var->save_result.ulong_value= ((ulong) find_set(enum_names, res->c_ptr(), res->length(), NULL, &error, &error_len, ¬_used)); if (error_len) { strmake(buff, error, min(sizeof(buff), error_len)); goto err; } } else { ulonglong tmp= var->value->val_int(); /* For when the enum is made to contain 64 elements, as 1ULL<<64 is undefined, we guard with a "count<64" test. */ if (unlikely((tmp >= ((ULL(1)) << enum_names->count)) && (enum_names->count < 64))) { llstr(tmp, buff); goto err; } var->save_result.ulong_value= (ulong) tmp; // Save for update } return 0; err: my_error(ER_WRONG_VALUE_FOR_VAR, MYF(0), name, buff); return 1; } /* Return an Item for a variable. Used with @@[global.]variable_name If type is not given, return local value if exists, else global */ Item *sys_var::item(THD *thd, enum_var_type var_type, LEX_STRING *base) { if (check_type(var_type)) { if (var_type != OPT_DEFAULT) { my_error(ER_INCORRECT_GLOBAL_LOCAL_VAR, MYF(0), name, var_type == OPT_GLOBAL ? "SESSION" : "GLOBAL"); return 0; } /* As there was no local variable, return the global value */ var_type= OPT_GLOBAL; } switch (type()) { case SHOW_INT: { uint value; pthread_mutex_lock(&LOCK_global_system_variables); value= *(uint*) value_ptr(thd, var_type, base); pthread_mutex_unlock(&LOCK_global_system_variables); return new Item_uint((ulonglong) value); } case SHOW_LONG: { ulong value; pthread_mutex_lock(&LOCK_global_system_variables); value= *(ulong*) value_ptr(thd, var_type, base); pthread_mutex_unlock(&LOCK_global_system_variables); return new Item_uint((ulonglong) value); } case SHOW_LONGLONG: { longlong value; pthread_mutex_lock(&LOCK_global_system_variables); value= *(longlong*) value_ptr(thd, var_type, base); pthread_mutex_unlock(&LOCK_global_system_variables); return new Item_int(value); } case SHOW_HA_ROWS: { ha_rows value; pthread_mutex_lock(&LOCK_global_system_variables); value= *(ha_rows*) value_ptr(thd, var_type, base); pthread_mutex_unlock(&LOCK_global_system_variables); return new Item_int((longlong) value); } case SHOW_MY_BOOL: return new Item_int((int32) *(my_bool*) value_ptr(thd, var_type, base),1); case SHOW_CHAR: { Item *tmp; pthread_mutex_lock(&LOCK_global_system_variables); char *str= (char*) value_ptr(thd, var_type, base); if (str) tmp= new Item_string(str, strlen(str), system_charset_info, DERIVATION_SYSCONST); else { tmp= new Item_null(); tmp->collation.set(system_charset_info, DERIVATION_SYSCONST); } pthread_mutex_unlock(&LOCK_global_system_variables); return tmp; } default: my_error(ER_VAR_CANT_BE_READ, MYF(0), name); } return 0; } bool sys_var_thd_enum::update(THD *thd, set_var *var) { if (var->type == OPT_GLOBAL) global_system_variables.*offset= var->save_result.ulong_value; else thd->variables.*offset= var->save_result.ulong_value; return 0; } void sys_var_thd_enum::set_default(THD *thd, enum_var_type type) { if (type == OPT_GLOBAL) global_system_variables.*offset= (ulong) option_limits->def_value; else thd->variables.*offset= global_system_variables.*offset; } byte *sys_var_thd_enum::value_ptr(THD *thd, enum_var_type type, LEX_STRING *base) { ulong tmp= ((type == OPT_GLOBAL) ? global_system_variables.*offset : thd->variables.*offset); return (byte*) enum_names->type_names[tmp]; } bool sys_var_thd_bit::check(THD *thd, set_var *var) { return (check_enum(thd, var, &bool_typelib) || (check_func && (*check_func)(thd, var))); } bool sys_var_thd_bit::update(THD *thd, set_var *var) { int res= (*update_func)(thd, var); return res; } byte *sys_var_thd_bit::value_ptr(THD *thd, enum_var_type type, LEX_STRING *base) { /* If reverse is 0 (default) return 1 if bit is set. If reverse is 1, return 0 if bit is set */ thd->sys_var_tmp.my_bool_value= ((thd->options & bit_flag) ? !reverse : reverse); return (byte*) &thd->sys_var_tmp.my_bool_value; } /* Update a date_time format variable based on given value */ void sys_var_thd_date_time_format::update2(THD *thd, enum_var_type type, DATE_TIME_FORMAT *new_value) { DATE_TIME_FORMAT *old; DBUG_ENTER("sys_var_date_time_format::update2"); DBUG_DUMP("positions",(char*) new_value->positions, sizeof(new_value->positions)); if (type == OPT_GLOBAL) { pthread_mutex_lock(&LOCK_global_system_variables); old= (global_system_variables.*offset); (global_system_variables.*offset)= new_value; pthread_mutex_unlock(&LOCK_global_system_variables); } else { old= (thd->variables.*offset); (thd->variables.*offset)= new_value; } my_free((char*) old, MYF(MY_ALLOW_ZERO_PTR)); DBUG_VOID_RETURN; } bool sys_var_thd_date_time_format::update(THD *thd, set_var *var) { DATE_TIME_FORMAT *new_value; /* We must make a copy of the last value to get it into normal memory */ new_value= date_time_format_copy((THD*) 0, var->save_result.date_time_format); if (!new_value) return 1; // Out of memory update2(thd, var->type, new_value); // Can't fail return 0; } bool sys_var_thd_date_time_format::check(THD *thd, set_var *var) { char buff[STRING_BUFFER_USUAL_SIZE]; String str(buff,sizeof(buff), system_charset_info), *res; DATE_TIME_FORMAT *format; if (!(res=var->value->val_str(&str))) res= &my_empty_string; if (!(format= date_time_format_make(date_time_type, res->ptr(), res->length()))) { my_error(ER_WRONG_VALUE_FOR_VAR, MYF(0), name, res->c_ptr()); return 1; } /* We must copy result to thread space to not get a memory leak if update is aborted */ var->save_result.date_time_format= date_time_format_copy(thd, format); my_free((char*) format, MYF(0)); return var->save_result.date_time_format == 0; } void sys_var_thd_date_time_format::set_default(THD *thd, enum_var_type type) { DATE_TIME_FORMAT *res= 0; if (type == OPT_GLOBAL) { const char *format; if ((format= opt_date_time_formats[date_time_type])) res= date_time_format_make(date_time_type, format, strlen(format)); } else { /* Make copy with malloc */ res= date_time_format_copy((THD *) 0, global_system_variables.*offset); } if (res) // Should always be true update2(thd, type, res); } byte *sys_var_thd_date_time_format::value_ptr(THD *thd, enum_var_type type, LEX_STRING *base) { if (type == OPT_GLOBAL) { char *res; /* We do a copy here just to be sure things will work even if someone is modifying the original string while the copy is accessed (Can't happen now in SQL SHOW, but this is a good safety for the future) */ res= thd->strmake((global_system_variables.*offset)->format.str, (global_system_variables.*offset)->format.length); return (byte*) res; } return (byte*) (thd->variables.*offset)->format.str; } typedef struct old_names_map_st { const char *old_name; const char *new_name; } my_old_conv; static my_old_conv old_conv[]= { { "cp1251_koi8" , "cp1251" }, { "cp1250_latin2" , "cp1250" }, { "kam_latin2" , "keybcs2" }, { "mac_latin2" , "MacRoman" }, { "macce_latin2" , "MacCE" }, { "pc2_latin2" , "pclatin2" }, { "vga_latin2" , "pclatin1" }, { "koi8_cp1251" , "koi8r" }, { "win1251ukr_koi8_ukr" , "win1251ukr" }, { "koi8_ukr_win1251ukr" , "koi8u" }, { NULL , NULL } }; CHARSET_INFO *get_old_charset_by_name(const char *name) { my_old_conv *conv; for (conv= old_conv; conv->old_name; conv++) { if (!my_strcasecmp(&my_charset_latin1, name, conv->old_name)) return get_charset_by_csname(conv->new_name, MY_CS_PRIMARY, MYF(0)); } return NULL; } bool sys_var_collation::check(THD *thd, set_var *var) { CHARSET_INFO *tmp; LINT_INIT(tmp); if (var->value->result_type() == STRING_RESULT) { char buff[STRING_BUFFER_USUAL_SIZE]; String str(buff,sizeof(buff), system_charset_info), *res; if (!(res=var->value->val_str(&str))) { my_error(ER_WRONG_VALUE_FOR_VAR, MYF(0), name, "NULL"); return 1; } if (!(tmp=get_charset_by_name(res->c_ptr(),MYF(0)))) { my_error(ER_UNKNOWN_COLLATION, MYF(0), res->c_ptr()); return 1; } } else // INT_RESULT { if (!(tmp=get_charset((int) var->value->val_int(),MYF(0)))) { char buf[20]; int10_to_str((int) var->value->val_int(), buf, -10); my_error(ER_UNKNOWN_COLLATION, MYF(0), buf); return 1; } } var->save_result.charset= tmp; // Save for update return 0; } bool sys_var_character_set::check(THD *thd, set_var *var) { CHARSET_INFO *tmp; LINT_INIT(tmp); if (var->value->result_type() == STRING_RESULT) { char buff[STRING_BUFFER_USUAL_SIZE]; String str(buff,sizeof(buff), system_charset_info), *res; if (!(res=var->value->val_str(&str))) { if (!nullable) { my_error(ER_WRONG_VALUE_FOR_VAR, MYF(0), name, "NULL"); return 1; } tmp= NULL; } else if (!(tmp=get_charset_by_csname(res->c_ptr(),MY_CS_PRIMARY,MYF(0))) && !(tmp=get_old_charset_by_name(res->c_ptr()))) { my_error(ER_UNKNOWN_CHARACTER_SET, MYF(0), res->c_ptr()); return 1; } } else // INT_RESULT { if (!(tmp=get_charset((int) var->value->val_int(),MYF(0)))) { char buf[20]; int10_to_str((int) var->value->val_int(), buf, -10); my_error(ER_UNKNOWN_CHARACTER_SET, MYF(0), buf); return 1; } } var->save_result.charset= tmp; // Save for update return 0; } bool sys_var_character_set::update(THD *thd, set_var *var) { ci_ptr(thd,var->type)[0]= var->save_result.charset; thd->update_charset(); return 0; } byte *sys_var_character_set::value_ptr(THD *thd, enum_var_type type, LEX_STRING *base) { CHARSET_INFO *cs= ci_ptr(thd,type)[0]; return cs ? (byte*) cs->csname : (byte*) NULL; } CHARSET_INFO ** sys_var_character_set_connection::ci_ptr(THD *thd, enum_var_type type) { if (type == OPT_GLOBAL) return &global_system_variables.collation_connection; else return &thd->variables.collation_connection; } void sys_var_character_set_connection::set_default(THD *thd, enum_var_type type) { if (type == OPT_GLOBAL) global_system_variables.collation_connection= default_charset_info; else { thd->variables.collation_connection= global_system_variables.collation_connection; thd->update_charset(); } } CHARSET_INFO ** sys_var_character_set_client::ci_ptr(THD *thd, enum_var_type type) { if (type == OPT_GLOBAL) return &global_system_variables.character_set_client; else return &thd->variables.character_set_client; } void sys_var_character_set_client::set_default(THD *thd, enum_var_type type) { if (type == OPT_GLOBAL) global_system_variables.character_set_client= default_charset_info; else { thd->variables.character_set_client= (global_system_variables. character_set_client); thd->update_charset(); } } CHARSET_INFO ** sys_var_character_set_filesystem::ci_ptr(THD *thd, enum_var_type type) { if (type == OPT_GLOBAL) return &global_system_variables.character_set_filesystem; else return &thd->variables.character_set_filesystem; } extern CHARSET_INFO *character_set_filesystem; void sys_var_character_set_filesystem::set_default(THD *thd, enum_var_type type) { if (type == OPT_GLOBAL) global_system_variables.character_set_filesystem= character_set_filesystem; else { thd->variables.character_set_filesystem= (global_system_variables. character_set_filesystem); thd->update_charset(); } } CHARSET_INFO ** sys_var_character_set_results::ci_ptr(THD *thd, enum_var_type type) { if (type == OPT_GLOBAL) return &global_system_variables.character_set_results; else return &thd->variables.character_set_results; } void sys_var_character_set_results::set_default(THD *thd, enum_var_type type) { if (type == OPT_GLOBAL) global_system_variables.character_set_results= default_charset_info; else { thd->variables.character_set_results= (global_system_variables. character_set_results); thd->update_charset(); } } CHARSET_INFO ** sys_var_character_set_server::ci_ptr(THD *thd, enum_var_type type) { if (type == OPT_GLOBAL) return &global_system_variables.collation_server; else return &thd->variables.collation_server; } void sys_var_character_set_server::set_default(THD *thd, enum_var_type type) { if (type == OPT_GLOBAL) global_system_variables.collation_server= default_charset_info; else { thd->variables.collation_server= global_system_variables.collation_server; thd->update_charset(); } } CHARSET_INFO ** sys_var_character_set_database::ci_ptr(THD *thd, enum_var_type type) { if (type == OPT_GLOBAL) return &global_system_variables.collation_database; else return &thd->variables.collation_database; } void sys_var_character_set_database::set_default(THD *thd, enum_var_type type) { if (type == OPT_GLOBAL) global_system_variables.collation_database= default_charset_info; else { thd->variables.collation_database= thd->db_charset; thd->update_charset(); } } bool sys_var_collation_connection::update(THD *thd, set_var *var) { if (var->type == OPT_GLOBAL) global_system_variables.collation_connection= var->save_result.charset; else { thd->variables.collation_connection= var->save_result.charset; thd->update_charset(); } return 0; } byte *sys_var_collation_connection::value_ptr(THD *thd, enum_var_type type, LEX_STRING *base) { CHARSET_INFO *cs= ((type == OPT_GLOBAL) ? global_system_variables.collation_connection : thd->variables.collation_connection); return cs ? (byte*) cs->name : (byte*) "NULL"; } void sys_var_collation_connection::set_default(THD *thd, enum_var_type type) { if (type == OPT_GLOBAL) global_system_variables.collation_connection= default_charset_info; else { thd->variables.collation_connection= (global_system_variables. collation_connection); thd->update_charset(); } } bool sys_var_collation_database::update(THD *thd, set_var *var) { if (var->type == OPT_GLOBAL) global_system_variables.collation_database= var->save_result.charset; else { thd->variables.collation_database= var->save_result.charset; thd->update_charset(); } return 0; } byte *sys_var_collation_database::value_ptr(THD *thd, enum_var_type type, LEX_STRING *base) { CHARSET_INFO *cs= ((type == OPT_GLOBAL) ? global_system_variables.collation_database : thd->variables.collation_database); return cs ? (byte*) cs->name : (byte*) "NULL"; } void sys_var_collation_database::set_default(THD *thd, enum_var_type type) { if (type == OPT_GLOBAL) global_system_variables.collation_database= default_charset_info; else { thd->variables.collation_database= (global_system_variables. collation_database); thd->update_charset(); } } bool sys_var_collation_server::update(THD *thd, set_var *var) { if (var->type == OPT_GLOBAL) global_system_variables.collation_server= var->save_result.charset; else { thd->variables.collation_server= var->save_result.charset; thd->update_charset(); } return 0; } byte *sys_var_collation_server::value_ptr(THD *thd, enum_var_type type, LEX_STRING *base) { CHARSET_INFO *cs= ((type == OPT_GLOBAL) ? global_system_variables.collation_server : thd->variables.collation_server); return cs ? (byte*) cs->name : (byte*) "NULL"; } void sys_var_collation_server::set_default(THD *thd, enum_var_type type) { if (type == OPT_GLOBAL) global_system_variables.collation_server= default_charset_info; else { thd->variables.collation_server= (global_system_variables. collation_server); thd->update_charset(); } } LEX_STRING default_key_cache_base= {(char *) "default", 7 }; static KEY_CACHE zero_key_cache; KEY_CACHE *get_key_cache(LEX_STRING *cache_name) { safe_mutex_assert_owner(&LOCK_global_system_variables); if (!cache_name || ! cache_name->length) cache_name= &default_key_cache_base; return ((KEY_CACHE*) find_named(&key_caches, cache_name->str, cache_name->length, 0)); } byte *sys_var_key_cache_param::value_ptr(THD *thd, enum_var_type type, LEX_STRING *base) { KEY_CACHE *key_cache= get_key_cache(base); if (!key_cache) key_cache= &zero_key_cache; return (byte*) key_cache + offset ; } bool sys_var_key_buffer_size::update(THD *thd, set_var *var) { ulonglong tmp= var->save_result.ulonglong_value; LEX_STRING *base_name= &var->base; KEY_CACHE *key_cache; bool error= 0; /* If no basename, assume it's for the key cache named 'default' */ if (!base_name->length) base_name= &default_key_cache_base; pthread_mutex_lock(&LOCK_global_system_variables); key_cache= get_key_cache(base_name); if (!key_cache) { /* Key cache didn't exists */ if (!tmp) // Tried to delete cache goto end; // Ok, nothing to do if (!(key_cache= create_key_cache(base_name->str, base_name->length))) { error= 1; goto end; } } /* Abort if some other thread is changing the key cache TODO: This should be changed so that we wait until the previous assignment is done and then do the new assign */ if (key_cache->in_init) goto end; if (!tmp) // Zero size means delete { if (key_cache == dflt_key_cache) { push_warning_printf(thd, MYSQL_ERROR::WARN_LEVEL_WARN, ER_WARN_CANT_DROP_DEFAULT_KEYCACHE, ER(ER_WARN_CANT_DROP_DEFAULT_KEYCACHE)); goto end; // Ignore default key cache } if (key_cache->key_cache_inited) // If initied { /* Move tables using this key cache to the default key cache and clear the old key cache. */ NAMED_LIST *list; key_cache= (KEY_CACHE *) find_named(&key_caches, base_name->str, base_name->length, &list); key_cache->in_init= 1; pthread_mutex_unlock(&LOCK_global_system_variables); error= reassign_keycache_tables(thd, key_cache, dflt_key_cache); pthread_mutex_lock(&LOCK_global_system_variables); key_cache->in_init= 0; } /* We don't delete the key cache as some running threads my still be in the key cache code with a pointer to the deleted (empty) key cache */ goto end; } key_cache->param_buff_size= (ulonglong) getopt_ull_limit_value(tmp, option_limits); /* If key cache didn't existed initialize it, else resize it */ key_cache->in_init= 1; pthread_mutex_unlock(&LOCK_global_system_variables); if (!key_cache->key_cache_inited) error= (bool) (ha_init_key_cache("", key_cache)); else error= (bool)(ha_resize_key_cache(key_cache)); pthread_mutex_lock(&LOCK_global_system_variables); key_cache->in_init= 0; end: pthread_mutex_unlock(&LOCK_global_system_variables); return error; } bool sys_var_key_cache_long::update(THD *thd, set_var *var) { ulong tmp= (ulong) var->value->val_int(); LEX_STRING *base_name= &var->base; bool error= 0; if (!base_name->length) base_name= &default_key_cache_base; pthread_mutex_lock(&LOCK_global_system_variables); KEY_CACHE *key_cache= get_key_cache(base_name); if (!key_cache && !(key_cache= create_key_cache(base_name->str, base_name->length))) { error= 1; goto end; } /* Abort if some other thread is changing the key cache TODO: This should be changed so that we wait until the previous assignment is done and then do the new assign */ if (key_cache->in_init) goto end; *((ulong*) (((char*) key_cache) + offset))= (ulong) getopt_ull_limit_value(tmp, option_limits); /* Don't create a new key cache if it didn't exist (key_caches are created only when the user sets block_size) */ key_cache->in_init= 1; pthread_mutex_unlock(&LOCK_global_system_variables); error= (bool) (ha_resize_key_cache(key_cache)); pthread_mutex_lock(&LOCK_global_system_variables); key_cache->in_init= 0; end: pthread_mutex_unlock(&LOCK_global_system_variables); return error; } /***************************************************************************** Functions to handle SET NAMES and SET CHARACTER SET *****************************************************************************/ int set_var_collation_client::check(THD *thd) { return 0; } int set_var_collation_client::update(THD *thd) { thd->variables.character_set_client= character_set_client; thd->variables.character_set_results= character_set_results; thd->variables.collation_connection= collation_connection; thd->update_charset(); thd->protocol_simple.init(thd); thd->protocol_prep.init(thd); return 0; } /****************************************************************************/ bool sys_var_timestamp::update(THD *thd, set_var *var) { thd->set_time((time_t) var->save_result.ulonglong_value); return 0; } void sys_var_timestamp::set_default(THD *thd, enum_var_type type) { thd->user_time=0; } byte *sys_var_timestamp::value_ptr(THD *thd, enum_var_type type, LEX_STRING *base) { thd->sys_var_tmp.long_value= (long) thd->start_time; return (byte*) &thd->sys_var_tmp.long_value; } bool sys_var_last_insert_id::update(THD *thd, set_var *var) { thd->insert_id(var->save_result.ulonglong_value); return 0; } byte *sys_var_last_insert_id::value_ptr(THD *thd, enum_var_type type, LEX_STRING *base) { thd->sys_var_tmp.long_value= (long) thd->insert_id(); return (byte*) &thd->last_insert_id; } bool sys_var_insert_id::update(THD *thd, set_var *var) { thd->next_insert_id= var->save_result.ulonglong_value; return 0; } byte *sys_var_insert_id::value_ptr(THD *thd, enum_var_type type, LEX_STRING *base) { return (byte*) &thd->current_insert_id; } #ifdef HAVE_REPLICATION bool sys_var_slave_skip_counter::check(THD *thd, set_var *var) { int result= 0; pthread_mutex_lock(&LOCK_active_mi); pthread_mutex_lock(&active_mi->rli.run_lock); if (active_mi->rli.slave_running) { my_message(ER_SLAVE_MUST_STOP, ER(ER_SLAVE_MUST_STOP), MYF(0)); result=1; } pthread_mutex_unlock(&active_mi->rli.run_lock); pthread_mutex_unlock(&LOCK_active_mi); var->save_result.ulong_value= (ulong) var->value->val_int(); return result; } bool sys_var_slave_skip_counter::update(THD *thd, set_var *var) { pthread_mutex_lock(&LOCK_active_mi); pthread_mutex_lock(&active_mi->rli.run_lock); /* The following test should normally never be true as we test this in the check function; To be safe against multiple SQL_SLAVE_SKIP_COUNTER request, we do the check anyway */ if (!active_mi->rli.slave_running) { pthread_mutex_lock(&active_mi->rli.data_lock); active_mi->rli.slave_skip_counter= var->save_result.ulong_value; pthread_mutex_unlock(&active_mi->rli.data_lock); } pthread_mutex_unlock(&active_mi->rli.run_lock); pthread_mutex_unlock(&LOCK_active_mi); return 0; } bool sys_var_sync_binlog_period::update(THD *thd, set_var *var) { sync_binlog_period= (ulong) var->save_result.ulonglong_value; return 0; } #endif /* HAVE_REPLICATION */ bool sys_var_rand_seed1::update(THD *thd, set_var *var) { thd->rand.seed1= (ulong) var->save_result.ulonglong_value; return 0; } bool sys_var_rand_seed2::update(THD *thd, set_var *var) { thd->rand.seed2= (ulong) var->save_result.ulonglong_value; return 0; } bool sys_var_thd_time_zone::check(THD *thd, set_var *var) { char buff[MAX_TIME_ZONE_NAME_LENGTH]; String str(buff, sizeof(buff), &my_charset_latin1); String *res= var->value->val_str(&str); if (!(var->save_result.time_zone= my_tz_find(res, thd->lex->time_zone_tables_used))) { my_error(ER_UNKNOWN_TIME_ZONE, MYF(0), res ? res->c_ptr() : "NULL"); return 1; } return 0; } bool sys_var_thd_time_zone::update(THD *thd, set_var *var) { /* We are using Time_zone object found during check() phase. */ if (var->type == OPT_GLOBAL) { pthread_mutex_lock(&LOCK_global_system_variables); global_system_variables.time_zone= var->save_result.time_zone; pthread_mutex_unlock(&LOCK_global_system_variables); } else thd->variables.time_zone= var->save_result.time_zone; return 0; } byte *sys_var_thd_time_zone::value_ptr(THD *thd, enum_var_type type, LEX_STRING *base) { /* We can use ptr() instead of c_ptr() here because String contaning time zone name is guaranteed to be zero ended. */ if (type == OPT_GLOBAL) return (byte *)(global_system_variables.time_zone->get_name()->ptr()); else { /* This is an ugly fix for replication: we don't replicate properly queries invoking system variables' values to update tables; but CONVERT_TZ(,,@@session.time_zone) is so popular that we make it replicable (i.e. we tell the binlog code to store the session timezone). If it's the global value which was used we can't replicate (binlog code stores session value only). */ thd->time_zone_used= 1; return (byte *)(thd->variables.time_zone->get_name()->ptr()); } } void sys_var_thd_time_zone::set_default(THD *thd, enum_var_type type) { pthread_mutex_lock(&LOCK_global_system_variables); if (type == OPT_GLOBAL) { if (default_tz_name) { String str(default_tz_name, &my_charset_latin1); /* We are guaranteed to find this time zone since its existence is checked during start-up. */ global_system_variables.time_zone= my_tz_find(&str, thd->lex->time_zone_tables_used); } else global_system_variables.time_zone= my_tz_SYSTEM; } else thd->variables.time_zone= global_system_variables.time_zone; pthread_mutex_unlock(&LOCK_global_system_variables); } bool sys_var_max_user_conn::check(THD *thd, set_var *var) { if (var->type == OPT_GLOBAL) return sys_var_thd::check(thd, var); else { /* Per-session values of max_user_connections can't be set directly. QQ: May be we should have a separate error message for this? */ my_error(ER_GLOBAL_VARIABLE, MYF(0), name); return TRUE; } } bool sys_var_max_user_conn::update(THD *thd, set_var *var) { DBUG_ASSERT(var->type == OPT_GLOBAL); pthread_mutex_lock(&LOCK_global_system_variables); max_user_connections= (uint)var->save_result.ulonglong_value; pthread_mutex_unlock(&LOCK_global_system_variables); return 0; } void sys_var_max_user_conn::set_default(THD *thd, enum_var_type type) { DBUG_ASSERT(type == OPT_GLOBAL); pthread_mutex_lock(&LOCK_global_system_variables); max_user_connections= (ulong) option_limits->def_value; pthread_mutex_unlock(&LOCK_global_system_variables); } byte *sys_var_max_user_conn::value_ptr(THD *thd, enum_var_type type, LEX_STRING *base) { if (type != OPT_GLOBAL && thd->user_connect && thd->user_connect->user_resources.user_conn) return (byte*) &(thd->user_connect->user_resources.user_conn); return (byte*) &(max_user_connections); } /* Functions to update thd->options bits */ static bool set_option_bit(THD *thd, set_var *var) { sys_var_thd_bit *sys_var= ((sys_var_thd_bit*) var->var); if ((var->save_result.ulong_value != 0) == sys_var->reverse) thd->options&= ~sys_var->bit_flag; else thd->options|= sys_var->bit_flag; return 0; } static bool set_option_autocommit(THD *thd, set_var *var) { /* The test is negative as the flag we use is NOT autocommit */ ulong org_options=thd->options; if (var->save_result.ulong_value != 0) thd->options&= ~((sys_var_thd_bit*) var->var)->bit_flag; else thd->options|= ((sys_var_thd_bit*) var->var)->bit_flag; if ((org_options ^ thd->options) & OPTION_NOT_AUTOCOMMIT) { if ((org_options & OPTION_NOT_AUTOCOMMIT)) { /* We changed to auto_commit mode */ thd->options&= ~(ulong) (OPTION_BEGIN | OPTION_STATUS_NO_TRANS_UPDATE); thd->server_status|= SERVER_STATUS_AUTOCOMMIT; if (ha_commit(thd)) return 1; } else { thd->options&= ~(ulong) (OPTION_STATUS_NO_TRANS_UPDATE); thd->server_status&= ~SERVER_STATUS_AUTOCOMMIT; } } return 0; } static int check_log_update(THD *thd, set_var *var) { #ifndef NO_EMBEDDED_ACCESS_CHECKS if (!(thd->security_ctx->master_access & SUPER_ACL)) { my_error(ER_SPECIFIC_ACCESS_DENIED_ERROR, MYF(0), "SUPER"); return 1; } #endif return 0; } static bool set_log_update(THD *thd, set_var *var) { /* The update log is not supported anymore since 5.0. See sql/mysqld.cc/, comments in function init_server_components() for an explaination of the different warnings we send below */ if (opt_sql_bin_update) { push_warning(thd, MYSQL_ERROR::WARN_LEVEL_NOTE, ER_UPDATE_LOG_DEPRECATED_TRANSLATED, ER(ER_UPDATE_LOG_DEPRECATED_TRANSLATED)); } else push_warning(thd, MYSQL_ERROR::WARN_LEVEL_NOTE, ER_UPDATE_LOG_DEPRECATED_IGNORED, ER(ER_UPDATE_LOG_DEPRECATED_IGNORED)); set_option_bit(thd, var); return 0; } static int check_pseudo_thread_id(THD *thd, set_var *var) { var->save_result.ulonglong_value= var->value->val_int(); #ifndef NO_EMBEDDED_ACCESS_CHECKS if (thd->security_ctx->master_access & SUPER_ACL) return 0; else { my_error(ER_SPECIFIC_ACCESS_DENIED_ERROR, MYF(0), "SUPER"); return 1; } #else return 0; #endif } static byte *get_warning_count(THD *thd) { thd->sys_var_tmp.long_value= (thd->warn_count[(uint) MYSQL_ERROR::WARN_LEVEL_NOTE] + thd->warn_count[(uint) MYSQL_ERROR::WARN_LEVEL_WARN]); return (byte*) &thd->sys_var_tmp.long_value; } static byte *get_error_count(THD *thd) { thd->sys_var_tmp.long_value= thd->warn_count[(uint) MYSQL_ERROR::WARN_LEVEL_ERROR]; return (byte*) &thd->sys_var_tmp.long_value; } static byte *get_prepared_stmt_count(THD *thd) { pthread_mutex_lock(&LOCK_prepared_stmt_count); thd->sys_var_tmp.ulong_value= prepared_stmt_count; pthread_mutex_unlock(&LOCK_prepared_stmt_count); return (byte*) &thd->sys_var_tmp.ulong_value; } /* Get the tmpdir that was specified or chosen by default SYNOPSIS get_tmpdir() thd thread handle DESCRIPTION This is necessary because if the user does not specify a temporary directory via the command line, one is chosen based on the environment or system defaults. But we can't just always use mysql_tmpdir, because that is actually a call to my_tmpdir() which cycles among possible temporary directories. RETURN VALUES ptr pointer to NUL-terminated string */ static byte *get_tmpdir(THD *thd) { if (opt_mysql_tmpdir) return (byte *)opt_mysql_tmpdir; return (byte*)mysql_tmpdir; } /**************************************************************************** Main handling of variables: - Initialisation - Searching during parsing - Update loop ****************************************************************************/ /* Find variable name in option my_getopt structure used for command line args SYNOPSIS find_option() opt option structure array to search in name variable name RETURN VALUES 0 Error ptr pointer to option structure */ static struct my_option *find_option(struct my_option *opt, const char *name) { uint length=strlen(name); for (; opt->name; opt++) { if (!getopt_compare_strings(opt->name, name, length) && !opt->name[length]) { /* Only accept the option if one can set values through it. If not, there is no default value or limits in the option. */ return (opt->value) ? opt : 0; } } return 0; } /* Return variable name and length for hashing of variables */ static byte *get_sys_var_length(const sys_var *var, uint *length, my_bool first) { *length= var->name_length; return (byte*) var->name; } /* Initialises sys variables and put them in system_variable_hash */ void set_var_init() { sys_var *var; hash_init(&system_variable_hash, system_charset_info, sys_var::sys_vars, 0, 0, (hash_get_key) get_sys_var_length, 0, 0); for (var= sys_var::first; var; var= var->next) { var->name_length= strlen(var->name); var->option_limits= find_option(my_long_options, var->name); my_hash_insert(&system_variable_hash, (byte*) var); } /* Special cases Needed because MySQL can't find the limits for a variable it it has a different name than the command line option. As these variables are deprecated, this code will disappear soon... */ sys_sql_max_join_size.option_limits= sys_max_join_size.option_limits; } void set_var_free() { hash_free(&system_variable_hash); } /* Find a user set-table variable SYNOPSIS find_sys_var() str Name of system variable to find length Length of variable. zero means that we should use strlen() on the variable RETURN VALUES pointer pointer to variable definitions 0 Unknown variable (error message is given) */ sys_var *find_sys_var(const char *str, uint length) { sys_var *var= (sys_var*) hash_search(&system_variable_hash, (byte*) str, length ? length : strlen(str)); if (!var) my_error(ER_UNKNOWN_SYSTEM_VARIABLE, MYF(0), (char*) str); return var; } /* Execute update of all variables SYNOPSIS sql_set THD Thread id set_var List of variables to update DESCRIPTION First run a check of all variables that all updates will go ok. If yes, then execute all updates, returning an error if any one failed. This should ensure that in all normal cases none all or variables are updated RETURN VALUE 0 ok 1 ERROR, message sent (normally no variables was updated) -1 ERROR, message not sent */ int sql_set_variables(THD *thd, List *var_list) { int error; List_iterator_fast it(*var_list); DBUG_ENTER("sql_set_variables"); set_var_base *var; while ((var=it++)) { if ((error= var->check(thd))) goto err; } if (!(error= test(thd->net.report_error))) { it.rewind(); while ((var= it++)) error|= var->update(thd); // Returns 0, -1 or 1 } err: free_underlaid_joins(thd, &thd->lex->select_lex); DBUG_RETURN(error); } /* Say if all variables set by a SET support the ONE_SHOT keyword (currently, only character set and collation do; later timezones will). SYNOPSIS not_all_support_one_shot set_var List of variables to update NOTES It has a "not_" because it makes faster tests (no need to "!") RETURN VALUE 0 all variables of the list support ONE_SHOT 1 at least one does not support ONE_SHOT */ bool not_all_support_one_shot(List *var_list) { List_iterator_fast it(*var_list); set_var_base *var; while ((var= it++)) { if (var->no_support_one_shot()) return 1; } return 0; } /***************************************************************************** Functions to handle SET mysql_internal_variable=const_expr *****************************************************************************/ int set_var::check(THD *thd) { if (var->is_readonly()) { my_error(ER_INCORRECT_GLOBAL_LOCAL_VAR, MYF(0), var->name, "read only"); return -1; } if (var->check_type(type)) { int err= type == OPT_GLOBAL ? ER_LOCAL_VARIABLE : ER_GLOBAL_VARIABLE; my_error(err, MYF(0), var->name); return -1; } if ((type == OPT_GLOBAL && check_global_access(thd, SUPER_ACL))) return 1; /* value is a NULL pointer if we are using SET ... = DEFAULT */ if (!value) { if (var->check_default(type)) { my_error(ER_NO_DEFAULT, MYF(0), var->name); return -1; } return 0; } if ((!value->fixed && value->fix_fields(thd, &value)) || value->check_cols(1)) return -1; if (var->check_update_type(value->result_type())) { my_error(ER_WRONG_TYPE_FOR_VAR, MYF(0), var->name); return -1; } return var->check(thd, this) ? -1 : 0; } /* Check variable, but without assigning value (used by PS) SYNOPSIS set_var::light_check() thd thread handler RETURN VALUE 0 ok 1 ERROR, message sent (normally no variables was updated) -1 ERROR, message not sent */ int set_var::light_check(THD *thd) { if (var->check_type(type)) { int err= type == OPT_GLOBAL ? ER_LOCAL_VARIABLE : ER_GLOBAL_VARIABLE; my_error(err, MYF(0), var->name); return -1; } if (type == OPT_GLOBAL && check_global_access(thd, SUPER_ACL)) return 1; if (value && ((!value->fixed && value->fix_fields(thd, &value)) || value->check_cols(1))) return -1; return 0; } int set_var::update(THD *thd) { if (!value) var->set_default(thd, type); else if (var->update(thd, this)) return -1; // should never happen if (var->after_update) (*var->after_update)(thd, type); return 0; } /***************************************************************************** Functions to handle SET @user_variable=const_expr *****************************************************************************/ int set_var_user::check(THD *thd) { /* Item_func_set_user_var can't substitute something else on its place => 0 can be passed as last argument (reference on item) */ return (user_var_item->fix_fields(thd, (Item**) 0) || user_var_item->check()) ? -1 : 0; } /* Check variable, but without assigning value (used by PS) SYNOPSIS set_var_user::light_check() thd thread handler RETURN VALUE 0 ok 1 ERROR, message sent (normally no variables was updated) -1 ERROR, message not sent */ int set_var_user::light_check(THD *thd) { /* Item_func_set_user_var can't substitute something else on its place => 0 can be passed as last argument (reference on item) */ return (user_var_item->fix_fields(thd, (Item**) 0)); } int set_var_user::update(THD *thd) { if (user_var_item->update()) { /* Give an error if it's not given already */ my_message(ER_SET_CONSTANTS_ONLY, ER(ER_SET_CONSTANTS_ONLY), MYF(0)); return -1; } return 0; } /***************************************************************************** Functions to handle SET PASSWORD *****************************************************************************/ int set_var_password::check(THD *thd) { #ifndef NO_EMBEDDED_ACCESS_CHECKS if (!user->host.str) { if (*thd->security_ctx->priv_host != 0) { user->host.str= (char *) thd->security_ctx->priv_host; user->host.length= strlen(thd->security_ctx->priv_host); } else { user->host.str= (char *)"%"; user->host.length= 1; } } /* Returns 1 as the function sends error to client */ return check_change_password(thd, user->host.str, user->user.str, password, strlen(password)) ? 1 : 0; #else return 0; #endif } int set_var_password::update(THD *thd) { #ifndef NO_EMBEDDED_ACCESS_CHECKS /* Returns 1 as the function sends error to client */ return change_password(thd, user->host.str, user->user.str, password) ? 1 : 0; #else return 0; #endif } /**************************************************************************** Functions to handle table_type ****************************************************************************/ /* Based upon sys_var::check_enum() */ bool sys_var_thd_storage_engine::check(THD *thd, set_var *var) { char buff[STRING_BUFFER_USUAL_SIZE]; const char *value; String str(buff, sizeof(buff), &my_charset_latin1), *res; if (var->value->result_type() == STRING_RESULT) { LEX_STRING name; handlerton *db_type; if (!(res=var->value->val_str(&str)) || !(name.str= (char *)res->ptr()) || !(name.length= res->length()) || !(var->save_result.hton= db_type= ha_resolve_by_name(thd, &name)) || ha_checktype(thd, ha_legacy_type(db_type), 1, 0) != db_type) { value= res ? res->c_ptr() : "NULL"; goto err; } return 0; } value= "unknown"; err: my_error(ER_UNKNOWN_STORAGE_ENGINE, MYF(0), value); return 1; } byte *sys_var_thd_storage_engine::value_ptr(THD *thd, enum_var_type type, LEX_STRING *base) { handlerton *val; val= (type == OPT_GLOBAL) ? global_system_variables.*offset : thd->variables.*offset; return (byte *) val->name; } void sys_var_thd_storage_engine::set_default(THD *thd, enum_var_type type) { if (type == OPT_GLOBAL) global_system_variables.*offset= &myisam_hton; else thd->variables.*offset= global_system_variables.*offset; } bool sys_var_thd_storage_engine::update(THD *thd, set_var *var) { handlerton **value= &(global_system_variables.*offset); if (var->type != OPT_GLOBAL) value= &(thd->variables.*offset); *value= var->save_result.hton; return 0; } void sys_var_thd_table_type::warn_deprecated(THD *thd) { WARN_DEPRECATED(thd, "5.2", "table_type", "'storage_engine'"); } void sys_var_thd_table_type::set_default(THD *thd, enum_var_type type) { warn_deprecated(thd); sys_var_thd_storage_engine::set_default(thd, type); } bool sys_var_thd_table_type::update(THD *thd, set_var *var) { warn_deprecated(thd); return sys_var_thd_storage_engine::update(thd, var); } /**************************************************************************** Functions to handle sql_mode ****************************************************************************/ /* Make string representation of mode SYNOPSIS thd in thread handler val in sql_mode value len out pointer on length of string RETURN pointer to string with sql_mode representation */ byte *sys_var_thd_sql_mode::symbolic_mode_representation(THD *thd, ulong val, ulong *len) { char buff[256]; String tmp(buff, sizeof(buff), &my_charset_latin1); ulong length; tmp.length(0); for (uint i= 0; val; val>>= 1, i++) { if (val & 1) { tmp.append(sql_mode_typelib.type_names[i], sql_mode_typelib.type_lengths[i]); tmp.append(','); } } if ((length= tmp.length())) length--; *len= length; return (byte*) thd->strmake(tmp.ptr(), length); } byte *sys_var_thd_sql_mode::value_ptr(THD *thd, enum_var_type type, LEX_STRING *base) { ulong val= ((type == OPT_GLOBAL) ? global_system_variables.*offset : thd->variables.*offset); ulong length_unused; return symbolic_mode_representation(thd, val, &length_unused); } void sys_var_thd_sql_mode::set_default(THD *thd, enum_var_type type) { if (type == OPT_GLOBAL) global_system_variables.*offset= 0; else thd->variables.*offset= global_system_variables.*offset; } void fix_sql_mode_var(THD *thd, enum_var_type type) { if (type == OPT_GLOBAL) global_system_variables.sql_mode= fix_sql_mode(global_system_variables.sql_mode); else { thd->variables.sql_mode= fix_sql_mode(thd->variables.sql_mode); /* Update thd->server_status */ if (thd->variables.sql_mode & MODE_NO_BACKSLASH_ESCAPES) thd->server_status|= SERVER_STATUS_NO_BACKSLASH_ESCAPES; else thd->server_status&= ~SERVER_STATUS_NO_BACKSLASH_ESCAPES; } } /* Map database specific bits to function bits */ ulong fix_sql_mode(ulong sql_mode) { /* Note that we dont set MODE_NO_KEY_OPTIONS | MODE_NO_TABLE_OPTIONS | MODE_NO_FIELD_OPTIONS to allow one to get full use of MySQL in this mode. */ if (sql_mode & MODE_ANSI) { sql_mode|= (MODE_REAL_AS_FLOAT | MODE_PIPES_AS_CONCAT | MODE_ANSI_QUOTES | MODE_IGNORE_SPACE); /* MODE_ONLY_FULL_GROUP_BY removed from ANSI mode because it is currently overly restrictive (see BUG#8510). */ } if (sql_mode & MODE_ORACLE) sql_mode|= (MODE_PIPES_AS_CONCAT | MODE_ANSI_QUOTES | MODE_IGNORE_SPACE | MODE_NO_KEY_OPTIONS | MODE_NO_TABLE_OPTIONS | MODE_NO_FIELD_OPTIONS | MODE_NO_AUTO_CREATE_USER); if (sql_mode & MODE_MSSQL) sql_mode|= (MODE_PIPES_AS_CONCAT | MODE_ANSI_QUOTES | MODE_IGNORE_SPACE | MODE_NO_KEY_OPTIONS | MODE_NO_TABLE_OPTIONS | MODE_NO_FIELD_OPTIONS); if (sql_mode & MODE_POSTGRESQL) sql_mode|= (MODE_PIPES_AS_CONCAT | MODE_ANSI_QUOTES | MODE_IGNORE_SPACE | MODE_NO_KEY_OPTIONS | MODE_NO_TABLE_OPTIONS | MODE_NO_FIELD_OPTIONS); if (sql_mode & MODE_DB2) sql_mode|= (MODE_PIPES_AS_CONCAT | MODE_ANSI_QUOTES | MODE_IGNORE_SPACE | MODE_NO_KEY_OPTIONS | MODE_NO_TABLE_OPTIONS | MODE_NO_FIELD_OPTIONS); if (sql_mode & MODE_MAXDB) sql_mode|= (MODE_PIPES_AS_CONCAT | MODE_ANSI_QUOTES | MODE_IGNORE_SPACE | MODE_NO_KEY_OPTIONS | MODE_NO_TABLE_OPTIONS | MODE_NO_FIELD_OPTIONS | MODE_NO_AUTO_CREATE_USER); if (sql_mode & MODE_MYSQL40) sql_mode|= MODE_HIGH_NOT_PRECEDENCE; if (sql_mode & MODE_MYSQL323) sql_mode|= MODE_HIGH_NOT_PRECEDENCE; if (sql_mode & MODE_TRADITIONAL) sql_mode|= (MODE_STRICT_TRANS_TABLES | MODE_STRICT_ALL_TABLES | MODE_NO_ZERO_IN_DATE | MODE_NO_ZERO_DATE | MODE_ERROR_FOR_DIVISION_BY_ZERO | MODE_NO_AUTO_CREATE_USER); return sql_mode; } /**************************************************************************** Named list handling ****************************************************************************/ gptr find_named(I_List *list, const char *name, uint length, NAMED_LIST **found) { I_List_iterator it(*list); NAMED_LIST *element; while ((element= it++)) { if (element->cmp(name, length)) { if (found) *found= element; return element->data; } } return 0; } void delete_elements(I_List *list, void (*free_element)(const char *name, gptr)) { NAMED_LIST *element; DBUG_ENTER("delete_elements"); while ((element= list->get())) { (*free_element)(element->name, element->data); delete element; } DBUG_VOID_RETURN; } /* Key cache functions */ static KEY_CACHE *create_key_cache(const char *name, uint length) { KEY_CACHE *key_cache; DBUG_ENTER("create_key_cache"); DBUG_PRINT("enter",("name: %.*s", length, name)); if ((key_cache= (KEY_CACHE*) my_malloc(sizeof(KEY_CACHE), MYF(MY_ZEROFILL | MY_WME)))) { if (!new NAMED_LIST(&key_caches, name, length, (gptr) key_cache)) { my_free((char*) key_cache, MYF(0)); key_cache= 0; } else { /* Set default values for a key cache The values in dflt_key_cache_var is set by my_getopt() at startup We don't set 'buff_size' as this is used to enable the key cache */ key_cache->param_block_size= dflt_key_cache_var.param_block_size; key_cache->param_division_limit= dflt_key_cache_var.param_division_limit; key_cache->param_age_threshold= dflt_key_cache_var.param_age_threshold; } } DBUG_RETURN(key_cache); } KEY_CACHE *get_or_create_key_cache(const char *name, uint length) { LEX_STRING key_cache_name; KEY_CACHE *key_cache; key_cache_name.str= (char *) name; key_cache_name.length= length; pthread_mutex_lock(&LOCK_global_system_variables); if (!(key_cache= get_key_cache(&key_cache_name))) key_cache= create_key_cache(name, length); pthread_mutex_unlock(&LOCK_global_system_variables); return key_cache; } void free_key_cache(const char *name, KEY_CACHE *key_cache) { ha_end_key_cache(key_cache); my_free((char*) key_cache, MYF(0)); } bool process_key_caches(int (* func) (const char *name, KEY_CACHE *)) { I_List_iterator it(key_caches); NAMED_LIST *element; while ((element= it++)) { KEY_CACHE *key_cache= (KEY_CACHE *) element->data; func(element->name, key_cache); } return 0; } void sys_var_trust_routine_creators::warn_deprecated(THD *thd) { WARN_DEPRECATED(thd, "5.2", "log_bin_trust_routine_creators", "'log_bin_trust_function_creators'"); } void sys_var_trust_routine_creators::set_default(THD *thd, enum_var_type type) { warn_deprecated(thd); sys_var_bool_ptr::set_default(thd, type); } bool sys_var_trust_routine_creators::update(THD *thd, set_var *var) { warn_deprecated(thd); return sys_var_bool_ptr::update(thd, var); } /* even session variable here requires SUPER, because of -#o,file */ bool sys_var_thd_dbug::check(THD *thd, set_var *var) { return check_global_access(thd, SUPER_ACL); } bool sys_var_thd_dbug::update(THD *thd, set_var *var) { if (var->type == OPT_GLOBAL) DBUG_SET_INITIAL(var ? var->value->str_value.c_ptr() : ""); else { DBUG_POP(); DBUG_PUSH(var ? var->value->str_value.c_ptr() : ""); } return 0; } byte *sys_var_thd_dbug::value_ptr(THD *thd, enum_var_type type, LEX_STRING *b) { char buf[256]; if (type == OPT_GLOBAL) DBUG_EXPLAIN_INITIAL(buf, sizeof(buf)); else DBUG_EXPLAIN(buf, sizeof(buf)); return (byte*) thd->strdup(buf); } /* The update method of the global variable event_scheduler. If event_scheduler is switched from 0 to 1 then the scheduler main thread is resumed and if from 1 to 0 the scheduler thread is suspended SYNOPSIS sys_var_event_scheduler::update() thd Thread context (unused) var The new value Returns FALSE OK TRUE Error */ bool sys_var_event_scheduler::update(THD *thd, set_var *var) { enum Event_scheduler::enum_error_code res; Event_scheduler *scheduler= Event_scheduler::get_instance(); /* here start the thread if not running. */ DBUG_ENTER("sys_var_event_scheduler::update"); DBUG_PRINT("new_value", ("%lu", (bool)var->save_result.ulong_value)); if (!scheduler->initialized()) { my_error(ER_OPTION_PREVENTS_STATEMENT, MYF(0), "--event-scheduler=0"); DBUG_RETURN(true); } if (var->save_result.ulonglong_value < 1 || var->save_result.ulonglong_value > 2) { char buf[64]; my_error(ER_WRONG_VALUE_FOR_VAR, MYF(0), "event_scheduler", llstr(var->save_result.ulonglong_value, buf)); DBUG_RETURN(true); } if ((res= scheduler->suspend_or_resume(var->save_result.ulonglong_value == 1? Event_scheduler::RESUME : Event_scheduler::SUSPEND))) my_error(ER_EVENT_SET_VAR_ERROR, MYF(0), (uint) res); DBUG_RETURN((bool) res); } byte *sys_var_event_scheduler::value_ptr(THD *thd, enum_var_type type, LEX_STRING *base) { Event_scheduler *scheduler= Event_scheduler::get_instance(); if (!scheduler->initialized()) thd->sys_var_tmp.long_value= 0; else if (scheduler->get_state() == Event_scheduler::RUNNING) thd->sys_var_tmp.long_value= 1; else thd->sys_var_tmp.long_value= 2; return (byte*) &thd->sys_var_tmp; } /**************************************************************************** Used templates ****************************************************************************/ #ifdef HAVE_EXPLICIT_TEMPLATE_INSTANTIATION template class List; template class List_iterator_fast; template class I_List_iterator; #endif