diff options
| -rw-r--r-- | mysql-test/r/sp-destruct.result | 34 | ||||
| -rw-r--r-- | mysql-test/t/sp-destruct.test | 54 | ||||
| -rw-r--r-- | sql/event_db_repository.cc | 27 | ||||
| -rw-r--r-- | sql/sp.cc | 194 | ||||
| -rw-r--r-- | sql/sql_acl.cc | 7 | ||||
| -rw-r--r-- | sql/sql_acl.h | 3 | ||||
| -rw-r--r-- | sql/table.cc | 98 | ||||
| -rw-r--r-- | sql/table.h | 53 |
8 files changed, 381 insertions, 89 deletions
diff --git a/mysql-test/r/sp-destruct.result b/mysql-test/r/sp-destruct.result index d7d44061b76..b6891df2420 100644 --- a/mysql-test/r/sp-destruct.result +++ b/mysql-test/r/sp-destruct.result @@ -1,3 +1,4 @@ +call mtr.add_suppression("Column count of mysql.proc is wrong. Expected 20, found 19. The table is probably corrupted"); use test; drop procedure if exists bug14233; drop function if exists bug14233; @@ -11,11 +12,13 @@ create table t1 (id int); create trigger t1_ai after insert on t1 for each row call bug14233(); alter table mysql.proc drop type; call bug14233(); -ERROR HY000: Failed to load routine test.bug14233. The table mysql.proc is missing, corrupt, or contains bad data (internal code -5) +ERROR HY000: Column count of mysql.proc is wrong. Expected 20, found 19. The table is probably corrupted create view v1 as select bug14233_f(); -ERROR HY000: Failed to load routine test.bug14233_f. The table mysql.proc is missing, corrupt, or contains bad data (internal code -5) +ERROR HY000: Column count of mysql.proc is wrong. Expected 20, found 19. The table is probably corrupted insert into t1 values (0); -ERROR HY000: Failed to load routine test.bug14233. The table mysql.proc is missing, corrupt, or contains bad data (internal code -5) +ERROR HY000: Column count of mysql.proc is wrong. Expected 20, found 19. The table is probably corrupted +show procedure status; +ERROR HY000: Column count of mysql.proc is wrong. Expected 20, found 19. The table is probably corrupted flush table mysql.proc; call bug14233(); ERROR HY000: Incorrect information in file: './mysql/proc.frm' @@ -88,3 +91,28 @@ show procedure status where db=DATABASE(); Db Name Type Definer Modified Created Security_type Comment character_set_client collation_connection Database Collation show function status where db=DATABASE(); Db Name Type Definer Modified Created Security_type Comment character_set_client collation_connection Database Collation +DROP TABLE IF EXISTS proc_backup; +DROP PROCEDURE IF EXISTS p1; +# Backup the proc table +RENAME TABLE mysql.proc TO proc_backup; +CREATE TABLE mysql.proc LIKE proc_backup; +FLUSH TABLE mysql.proc; +# Test with a valid table. +CREATE PROCEDURE p1() +SET @foo = 10; +CALL p1(); +SHOW PROCEDURE STATUS; +Db Name Type Definer Modified Created Security_type Comment character_set_client collation_connection Database Collation +test p1 PROCEDURE root@localhost 0000-00-00 00:00:00 0000-00-00 00:00:00 DEFINER latin1 latin1_swedish_ci latin1_swedish_ci +# Modify a field of the table. +ALTER TABLE mysql.proc MODIFY comment CHAR (32); +CREATE PROCEDURE p2() +SET @foo = 10; +ERROR HY000: Cannot load from mysql.proc. The table is probably corrupted +# Procedure loaded from the cache +CALL p1(); +SHOW PROCEDURE STATUS; +ERROR HY000: Cannot load from mysql.proc. The table is probably corrupted +DROP TABLE mysql.proc; +RENAME TABLE proc_backup TO mysql.proc; +FLUSH TABLE mysql.proc; diff --git a/mysql-test/t/sp-destruct.test b/mysql-test/t/sp-destruct.test index 14c38a2fdb4..720c24b2c24 100644 --- a/mysql-test/t/sp-destruct.test +++ b/mysql-test/t/sp-destruct.test @@ -12,6 +12,9 @@ # mysqltest should be fixed to allow REPLACE_RESULT in error message -- source include/not_embedded.inc +# Supress warnings written to the log file +call mtr.add_suppression("Column count of mysql.proc is wrong. Expected 20, found 19. The table is probably corrupted"); + # Backup proc table let $MYSQLD_DATADIR= `select @@datadir`; --copy_file $MYSQLD_DATADIR/mysql/proc.frm $MYSQLTEST_VARDIR/tmp/proc.frm @@ -38,15 +41,14 @@ create trigger t1_ai after insert on t1 for each row call bug14233(); # Unsupported tampering with the mysql.proc definition alter table mysql.proc drop type; ---replace_result $MYSQL_TEST_DIR . ---error ER_SP_PROC_TABLE_CORRUPT +--error ER_COL_COUNT_DOESNT_MATCH_CORRUPTED call bug14233(); ---replace_result $MYSQL_TEST_DIR . ---error ER_SP_PROC_TABLE_CORRUPT +--error ER_COL_COUNT_DOESNT_MATCH_CORRUPTED create view v1 as select bug14233_f(); ---replace_result $MYSQL_TEST_DIR . ---error ER_SP_PROC_TABLE_CORRUPT +--error ER_COL_COUNT_DOESNT_MATCH_CORRUPTED insert into t1 values (0); +--error ER_COL_COUNT_DOESNT_MATCH_CORRUPTED +show procedure status; flush table mysql.proc; @@ -155,3 +157,43 @@ drop procedure bug14233_3; # Assert: These should show nothing. show procedure status where db=DATABASE(); show function status where db=DATABASE(); + +# +# Bug#41726 upgrade from 5.0 to 5.1.30 crashes if you didn't run mysql_upgrade +# + + +--disable_warnings +DROP TABLE IF EXISTS proc_backup; +DROP PROCEDURE IF EXISTS p1; +--enable_warnings + +--echo # Backup the proc table + +RENAME TABLE mysql.proc TO proc_backup; +CREATE TABLE mysql.proc LIKE proc_backup; +FLUSH TABLE mysql.proc; + +--echo # Test with a valid table. + +CREATE PROCEDURE p1() + SET @foo = 10; +CALL p1(); +--replace_column 5 '0000-00-00 00:00:00' 6 '0000-00-00 00:00:00' +SHOW PROCEDURE STATUS; + +--echo # Modify a field of the table. + +ALTER TABLE mysql.proc MODIFY comment CHAR (32); + +--error ER_CANNOT_LOAD_FROM_TABLE +CREATE PROCEDURE p2() + SET @foo = 10; +--echo # Procedure loaded from the cache +CALL p1(); +--error ER_CANNOT_LOAD_FROM_TABLE +SHOW PROCEDURE STATUS; + +DROP TABLE mysql.proc; +RENAME TABLE proc_backup TO mysql.proc; +FLUSH TABLE mysql.proc; diff --git a/sql/event_db_repository.cc b/sql/event_db_repository.cc index 8faab5023da..9f3863eb2b0 100644 --- a/sql/event_db_repository.cc +++ b/sql/event_db_repository.cc @@ -26,7 +26,7 @@ */ static -const TABLE_FIELD_W_TYPE event_table_fields[ET_FIELD_COUNT] = +const TABLE_FIELD_TYPE event_table_fields[ET_FIELD_COUNT] = { { { C_STRING_WITH_LEN("db") }, @@ -151,6 +151,24 @@ const TABLE_FIELD_W_TYPE event_table_fields[ET_FIELD_COUNT] = } }; +static const TABLE_FIELD_DEF + event_table_def= {ET_FIELD_COUNT, event_table_fields}; + +class Event_db_intact : public Table_check_intact +{ +protected: + void report_error(uint, const char *fmt, ...) + { + va_list args; + va_start(args, fmt); + error_log_print(ERROR_LEVEL, fmt, args); + va_end(args); + } +}; + +/** In case of an error, a message is printed to the error log. */ +static Event_db_intact table_intact; + /** Puts some data common to CREATE and ALTER EVENT into a row. @@ -1117,10 +1135,8 @@ Event_db_repository::check_system_tables(THD *thd) } else { - if (table_check_intact(tables.table, MYSQL_DB_FIELD_COUNT, - mysql_db_table_fields)) + if (table_intact.check(tables.table, &mysql_db_table_def)) ret= 1; - /* in case of an error, the message is printed inside table_check_intact */ close_thread_tables(thd); } @@ -1154,9 +1170,8 @@ Event_db_repository::check_system_tables(THD *thd) } else { - if (table_check_intact(tables.table, ET_FIELD_COUNT, event_table_fields)) + if (table_intact.check(tables.table, &event_table_def)) ret= 1; - /* in case of an error, the message is printed inside table_check_intact */ close_thread_tables(thd); } diff --git a/sql/sp.cc b/sql/sp.cc index b254ba8e694..d3c5dfb96d0 100644 --- a/sql/sp.cc +++ b/sql/sp.cc @@ -70,6 +70,122 @@ enum MYSQL_PROC_FIELD_COUNT }; +static const +TABLE_FIELD_TYPE proc_table_fields[MYSQL_PROC_FIELD_COUNT] = +{ + { + { C_STRING_WITH_LEN("db") }, + { C_STRING_WITH_LEN("char(64)") }, + { C_STRING_WITH_LEN("utf8") } + }, + { + { C_STRING_WITH_LEN("name") }, + { C_STRING_WITH_LEN("char(64)") }, + { C_STRING_WITH_LEN("utf8") } + }, + { + { C_STRING_WITH_LEN("type") }, + { C_STRING_WITH_LEN("enum('FUNCTION','PROCEDURE')") }, + { NULL, 0 } + }, + { + { C_STRING_WITH_LEN("specific_name") }, + { C_STRING_WITH_LEN("char(64)") }, + { C_STRING_WITH_LEN("utf8") } + }, + { + { C_STRING_WITH_LEN("language") }, + { C_STRING_WITH_LEN("enum('SQL')") }, + { NULL, 0 } + }, + { + { C_STRING_WITH_LEN("sql_data_access") }, + { C_STRING_WITH_LEN("enum('CONTAINS_SQL','NO_SQL','READS_SQL_DATA','MODIFIES_SQL_DATA')") }, + { NULL, 0 } + }, + { + { C_STRING_WITH_LEN("is_deterministic") }, + { C_STRING_WITH_LEN("enum('YES','NO')") }, + { NULL, 0 } + }, + { + { C_STRING_WITH_LEN("security_type") }, + { C_STRING_WITH_LEN("enum('INVOKER','DEFINER')") }, + { NULL, 0 } + }, + { + { C_STRING_WITH_LEN("param_list") }, + { C_STRING_WITH_LEN("blob") }, + { NULL, 0 } + }, + + { + { C_STRING_WITH_LEN("returns") }, + { C_STRING_WITH_LEN("longblob") }, + { NULL, 0 } + }, + { + { C_STRING_WITH_LEN("body") }, + { C_STRING_WITH_LEN("longblob") }, + { NULL, 0 } + }, + { + { C_STRING_WITH_LEN("definer") }, + { C_STRING_WITH_LEN("char(77)") }, + { C_STRING_WITH_LEN("utf8") } + }, + { + { C_STRING_WITH_LEN("created") }, + { C_STRING_WITH_LEN("timestamp") }, + { NULL, 0 } + }, + { + { C_STRING_WITH_LEN("modified") }, + { C_STRING_WITH_LEN("timestamp") }, + { NULL, 0 } + }, + { + { C_STRING_WITH_LEN("sql_mode") }, + { C_STRING_WITH_LEN("set('REAL_AS_FLOAT','PIPES_AS_CONCAT','ANSI_QUOTES'," + "'IGNORE_SPACE','NOT_USED','ONLY_FULL_GROUP_BY','NO_UNSIGNED_SUBTRACTION'," + "'NO_DIR_IN_CREATE','POSTGRESQL','ORACLE','MSSQL','DB2','MAXDB'," + "'NO_KEY_OPTIONS','NO_TABLE_OPTIONS','NO_FIELD_OPTIONS','MYSQL323','MYSQL40'," + "'ANSI','NO_AUTO_VALUE_ON_ZERO','NO_BACKSLASH_ESCAPES','STRICT_TRANS_TABLES'," + "'STRICT_ALL_TABLES','NO_ZERO_IN_DATE','NO_ZERO_DATE','INVALID_DATES'," + "'ERROR_FOR_DIVISION_BY_ZERO','TRADITIONAL','NO_AUTO_CREATE_USER'," + "'HIGH_NOT_PRECEDENCE','NO_ENGINE_SUBSTITUTION','PAD_CHAR_TO_FULL_LENGTH')") }, + { NULL, 0 } + }, + { + { C_STRING_WITH_LEN("comment") }, + { C_STRING_WITH_LEN("char(64)") }, + { C_STRING_WITH_LEN("utf8") } + }, + { + { C_STRING_WITH_LEN("character_set_client") }, + { C_STRING_WITH_LEN("char(32)") }, + { C_STRING_WITH_LEN("utf8") } + }, + { + { C_STRING_WITH_LEN("collation_connection") }, + { C_STRING_WITH_LEN("char(32)") }, + { C_STRING_WITH_LEN("utf8") } + }, + { + { C_STRING_WITH_LEN("db_collation") }, + { C_STRING_WITH_LEN("char(32)") }, + { C_STRING_WITH_LEN("utf8") } + }, + { + { C_STRING_WITH_LEN("body_utf8") }, + { C_STRING_WITH_LEN("longblob") }, + { NULL, 0 } + } +}; + +static const TABLE_FIELD_DEF + proc_table_def= {MYSQL_PROC_FIELD_COUNT, proc_table_fields}; + /*************************************************************************/ /** @@ -247,6 +363,50 @@ Stored_routine_creation_ctx::load_from_db(THD *thd, /*************************************************************************/ +class Proc_table_intact : public Table_check_intact +{ +private: + bool m_print_once; + +public: + Proc_table_intact() : m_print_once(TRUE) {} + +protected: + void report_error(uint code, const char *fmt, ...); +}; + + +/** + Report failure to validate the mysql.proc table definition. + Print a message to the error log only once. +*/ + +void Proc_table_intact::report_error(uint code, const char *fmt, ...) +{ + va_list args; + char buf[512]; + + va_start(args, fmt); + my_vsnprintf(buf, sizeof(buf), fmt, args); + va_end(args); + + if (code) + my_message(code, buf, MYF(0)); + else + my_error(ER_CANNOT_LOAD_FROM_TABLE, MYF(0), "proc"); + + if (m_print_once) + { + m_print_once= FALSE; + sql_print_error("%s", buf); + } +}; + + +/** Single instance used to control printing to the error log. */ +static Proc_table_intact proc_table_intact; + + /** Open the mysql.proc table for read. @@ -266,15 +426,17 @@ TABLE *open_proc_table_for_read(THD *thd, Open_tables_state *backup) DBUG_ENTER("open_proc_table_for_read"); TABLE_LIST table; - bzero((char*) &table, sizeof(table)); - table.db= (char*) "mysql"; - table.table_name= table.alias= (char*)"proc"; - table.lock_type= TL_READ; + table.init_one_table("mysql", "proc", TL_READ); + + if (open_system_tables_for_read(thd, &table, backup)) + DBUG_RETURN(NULL); - if (!open_system_tables_for_read(thd, &table, backup)) + if (!proc_table_intact.check(table.table, &proc_table_def)) DBUG_RETURN(table.table); - else - DBUG_RETURN(0); + + close_system_tables(thd, backup); + + DBUG_RETURN(NULL); } @@ -296,13 +458,19 @@ static TABLE *open_proc_table_for_update(THD *thd) { DBUG_ENTER("open_proc_table_for_update"); - TABLE_LIST table; - bzero((char*) &table, sizeof(table)); - table.db= (char*) "mysql"; - table.table_name= table.alias= (char*)"proc"; - table.lock_type= TL_WRITE; + TABLE *table; + TABLE_LIST table_list; + table_list.init_one_table("mysql", "proc", TL_WRITE); + + if (!(table= open_system_table_for_update(thd, &table_list))) + DBUG_RETURN(NULL); + + if (!proc_table_intact.check(table, &proc_table_def)) + DBUG_RETURN(table); + + close_thread_tables(thd); - DBUG_RETURN(open_system_table_for_update(thd, &table)); + DBUG_RETURN(NULL); } diff --git a/sql/sql_acl.cc b/sql/sql_acl.cc index fd87a5c0961..eb91f66d114 100644 --- a/sql/sql_acl.cc +++ b/sql/sql_acl.cc @@ -31,9 +31,8 @@ #include "sp_head.h" #include "sp.h" -time_t mysql_db_table_last_check= 0L; - -TABLE_FIELD_W_TYPE mysql_db_table_fields[MYSQL_DB_FIELD_COUNT] = { +static const +TABLE_FIELD_TYPE mysql_db_table_fields[MYSQL_DB_FIELD_COUNT] = { { { C_STRING_WITH_LEN("Host") }, { C_STRING_WITH_LEN("char(60)") }, @@ -146,6 +145,8 @@ TABLE_FIELD_W_TYPE mysql_db_table_fields[MYSQL_DB_FIELD_COUNT] = { } }; +const TABLE_FIELD_DEF + mysql_db_table_def= {MYSQL_DB_FIELD_COUNT, mysql_db_table_fields}; #ifndef NO_EMBEDDED_ACCESS_CHECKS diff --git a/sql/sql_acl.h b/sql/sql_acl.h index a8090fba2e7..4c835e2718c 100644 --- a/sql/sql_acl.h +++ b/sql/sql_acl.h @@ -159,8 +159,7 @@ enum mysql_db_table_field MYSQL_DB_FIELD_COUNT }; -extern TABLE_FIELD_W_TYPE mysql_db_table_fields[]; -extern time_t mysql_db_table_last_check; +extern const TABLE_FIELD_DEF mysql_db_table_def; /* Classes */ diff --git a/sql/table.cc b/sql/table.cc index 35e8d83369f..752b6ba0bd4 100644 --- a/sql/table.cc +++ b/sql/table.cc @@ -2811,34 +2811,38 @@ bool check_column_name(const char *name) and such errors never reach the user. */ -my_bool -table_check_intact(TABLE *table, const uint table_f_count, - const TABLE_FIELD_W_TYPE *table_def) +bool +Table_check_intact::check(TABLE *table, const TABLE_FIELD_DEF *table_def) { uint i; my_bool error= FALSE; - my_bool fields_diff_count; + const TABLE_FIELD_TYPE *field_def= table_def->field; DBUG_ENTER("table_check_intact"); DBUG_PRINT("info",("table: %s expected_count: %d", - table->alias, table_f_count)); + table->alias, table_def->count)); - fields_diff_count= (table->s->fields != table_f_count); - if (fields_diff_count) + /* Whether the table definition has already been validated. */ + if (table->s->table_field_def_cache == table_def) + DBUG_RETURN(FALSE); + + if (table->s->fields != table_def->count) { DBUG_PRINT("info", ("Column count has changed, checking the definition")); /* previous MySQL version */ if (MYSQL_VERSION_ID > table->s->mysql_version) { - sql_print_error(ER(ER_COL_COUNT_DOESNT_MATCH_PLEASE_UPDATE), - table->alias, table_f_count, table->s->fields, - table->s->mysql_version, MYSQL_VERSION_ID); + report_error(ER_COL_COUNT_DOESNT_MATCH_PLEASE_UPDATE, + ER(ER_COL_COUNT_DOESNT_MATCH_PLEASE_UPDATE), + table->alias, table_def->count, table->s->fields, + table->s->mysql_version, MYSQL_VERSION_ID); DBUG_RETURN(TRUE); } else if (MYSQL_VERSION_ID == table->s->mysql_version) { - sql_print_error(ER(ER_COL_COUNT_DOESNT_MATCH_CORRUPTED), table->alias, - table_f_count, table->s->fields); + report_error(ER_COL_COUNT_DOESNT_MATCH_CORRUPTED, + ER(ER_COL_COUNT_DOESNT_MATCH_CORRUPTED), table->alias, + table_def->count, table->s->fields); DBUG_RETURN(TRUE); } /* @@ -2850,7 +2854,7 @@ table_check_intact(TABLE *table, const uint table_f_count, */ } char buffer[STRING_BUFFER_USUAL_SIZE]; - for (i=0 ; i < table_f_count; i++, table_def++) + for (i=0 ; i < table_def->count; i++, field_def++) { String sql_type(buffer, sizeof(buffer), system_charset_info); sql_type.length(0); @@ -2858,18 +2862,18 @@ table_check_intact(TABLE *table, const uint table_f_count, { Field *field= table->field[i]; - if (strncmp(field->field_name, table_def->name.str, - table_def->name.length)) + if (strncmp(field->field_name, field_def->name.str, + field_def->name.length)) { /* Name changes are not fatal, we use ordinal numbers to access columns. Still this can be a sign of a tampered table, output an error to the error log. */ - sql_print_error("Incorrect definition of table %s.%s: " - "expected column '%s' at position %d, found '%s'.", - table->s->db.str, table->alias, table_def->name.str, i, - field->field_name); + report_error(0, "Incorrect definition of table %s.%s: " + "expected column '%s' at position %d, found '%s'.", + table->s->db.str, table->alias, field_def->name.str, i, + field->field_name); } field->sql_type(sql_type); /* @@ -2889,47 +2893,51 @@ table_check_intact(TABLE *table, const uint table_f_count, the new table definition is backward compatible with the original one. */ - if (strncmp(sql_type.c_ptr_safe(), table_def->type.str, - table_def->type.length - 1)) + if (strncmp(sql_type.c_ptr_safe(), field_def->type.str, + field_def->type.length - 1)) { - sql_print_error("Incorrect definition of table %s.%s: " - "expected column '%s' at position %d to have type " - "%s, found type %s.", table->s->db.str, table->alias, - table_def->name.str, i, table_def->type.str, - sql_type.c_ptr_safe()); + report_error(0, "Incorrect definition of table %s.%s: " + "expected column '%s' at position %d to have type " + "%s, found type %s.", table->s->db.str, table->alias, + field_def->name.str, i, field_def->type.str, + sql_type.c_ptr_safe()); error= TRUE; } - else if (table_def->cset.str && !field->has_charset()) + else if (field_def->cset.str && !field->has_charset()) { - sql_print_error("Incorrect definition of table %s.%s: " - "expected the type of column '%s' at position %d " - "to have character set '%s' but the type has no " - "character set.", table->s->db.str, table->alias, - table_def->name.str, i, table_def->cset.str); + report_error(0, "Incorrect definition of table %s.%s: " + "expected the type of column '%s' at position %d " + "to have character set '%s' but the type has no " + "character set.", table->s->db.str, table->alias, + field_def->name.str, i, field_def->cset.str); error= TRUE; } - else if (table_def->cset.str && - strcmp(field->charset()->csname, table_def->cset.str)) + else if (field_def->cset.str && + strcmp(field->charset()->csname, field_def->cset.str)) { - sql_print_error("Incorrect definition of table %s.%s: " - "expected the type of column '%s' at position %d " - "to have character set '%s' but found " - "character set '%s'.", table->s->db.str, table->alias, - table_def->name.str, i, table_def->cset.str, - field->charset()->csname); + report_error(0, "Incorrect definition of table %s.%s: " + "expected the type of column '%s' at position %d " + "to have character set '%s' but found " + "character set '%s'.", table->s->db.str, table->alias, + field_def->name.str, i, field_def->cset.str, + field->charset()->csname); error= TRUE; } } else { - sql_print_error("Incorrect definition of table %s.%s: " - "expected column '%s' at position %d to have type %s " - " but the column is not found.", - table->s->db.str, table->alias, - table_def->name.str, i, table_def->type.str); + report_error(0, "Incorrect definition of table %s.%s: " + "expected column '%s' at position %d to have type %s " + " but the column is not found.", + table->s->db.str, table->alias, + field_def->name.str, i, field_def->type.str); error= TRUE; } } + + if (! error) + table->s->table_field_def_cache= table_def; + DBUG_RETURN(error); } diff --git a/sql/table.h b/sql/table.h index e4a382c799f..eae261cc97d 100644 --- a/sql/table.h +++ b/sql/table.h @@ -285,6 +285,36 @@ typedef enum enum_table_category TABLE_CATEGORY; TABLE_CATEGORY get_table_category(const LEX_STRING *db, const LEX_STRING *name); + +typedef struct st_table_field_type +{ + LEX_STRING name; + LEX_STRING type; + LEX_STRING cset; +} TABLE_FIELD_TYPE; + + +typedef struct st_table_field_def +{ + uint count; + const TABLE_FIELD_TYPE *field; +} TABLE_FIELD_DEF; + + +class Table_check_intact +{ +protected: + virtual void report_error(uint code, const char *fmt, ...)= 0; + +public: + Table_check_intact() {} + virtual ~Table_check_intact() {} + + /** Checks whether a table is intact. */ + bool check(TABLE *table, const TABLE_FIELD_DEF *table_def); +}; + + /* This structure is shared between different table objects. There is one instance of table share per one table in the database. @@ -421,6 +451,18 @@ typedef struct st_table_share handlerton *default_part_db_type; #endif + /** + Cache the checked structure of this table. + + The pointer data is used to describe the structure that + a instance of the table must have. Each element of the + array specifies a field that must exist on the table. + + The pointer is cached in order to perform the check only + once -- when the table is loaded from the disk. + */ + const TABLE_FIELD_DEF *table_field_def_cache; + /** place to store storage engine specific data */ void *ha_data; @@ -1662,17 +1704,6 @@ typedef struct st_open_table_list{ uint32 in_use,locked; } OPEN_TABLE_LIST; -typedef struct st_table_field_w_type -{ - LEX_STRING name; - LEX_STRING type; - LEX_STRING cset; -} TABLE_FIELD_W_TYPE; - - -my_bool -table_check_intact(TABLE *table, const uint table_f_count, - const TABLE_FIELD_W_TYPE *table_def); static inline my_bitmap_map *tmp_use_all_columns(TABLE *table, MY_BITMAP *bitmap) |