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mariadb/sql/sp.h

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Moved create/find/drop functions to a separate files (sp.cc,sp.h). Fixed backpatching of forward jumps. Implemented LOOP, WHILE, REPEAT (temporarily known as SPREPEAT). Known bug: Expression evaluation still not quite ok (e.g. "x > 0"), which is why IF and CASE is not yet implemented.
2002-12-12 13:14:23 +01:00
/* -*- C++ -*- */
/* Copyright (C) 2002 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
Many files: Changed header to GPL version 2 only
2006-12-23 20:17:15 +01:00
the Free Software Foundation; version 2 of the License.
Moved create/find/drop functions to a separate files (sp.cc,sp.h). Fixed backpatching of forward jumps. Implemented LOOP, WHILE, REPEAT (temporarily known as SPREPEAT). Known bug: Expression evaluation still not quite ok (e.g. "x > 0"), which is why IF and CASE is not yet implemented.
2002-12-12 13:14:23 +01:00
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 */
#ifndef _SP_H_
#define _SP_H_
BUG#41166 stored function requires "deterministic" if binlog_format is "statement" If the log_bin_trust_function_creators option is not defined, creating a stored function requires either one of the modifiers DETERMINISTIC, NO SQL, or READS SQL DATA. Executing a stored function should also follows the same rules if in STATEMENT mode. However, this was not happening and a wrong error was being printed out: ER_BINLOG_ROW_RBR_TO_SBR. The patch makes the creation and execution compatible and prints out the correct error ER_BINLOG_UNSAFE_ROUTINE when a stored function without one of the modifiers above is executed in STATEMENT mode.
2009-07-28 19:44:38 +02:00
/* Tells what SP_DEFAULT_ACCESS should be mapped to */
#define SP_DEFAULT_ACCESS_MAPPING SP_CONTAINS_SQL
Bugfixes in SHOW CREATE PROCEDURE/FUNCTION and SHOW PROCEDURE/FUNCTION STATUS; - dropped routines should not show up in status - error handling for non-existing routines + some cleanup.
2003-11-20 15:07:22 +01:00
// Return codes from sp_create_*, sp_drop_*, and sp_show_*:
Most of the groundwork for sprint task 729 (implement FUNCTIONs). Expanded the mysql.proc table, reworked the find/create/drop functions completely, added new functions for FUNCTIONs (lotta functions here :), got rid of some unnecessary use of Item_strings while at it. Extended the parser correspondingly, and fiddled around a bit to make SP FUNCTIONs coexist with UDFs. Can now CREATE and DROP FUNCTIONs. Invoking yet to come...
2003-02-21 17:37:05 +01:00
#define SP_OK 0
#define SP_KEY_NOT_FOUND -1
#define SP_OPEN_TABLE_FAILED -2
#define SP_WRITE_ROW_FAILED -3
#define SP_DELETE_ROW_FAILED -4
#define SP_GET_FIELD_FAILED -5
#define SP_PARSE_ERROR -6
Bugfixes in SHOW CREATE PROCEDURE/FUNCTION and SHOW PROCEDURE/FUNCTION STATUS; - dropped routines should not show up in status - error handling for non-existing routines + some cleanup.
2003-11-20 15:07:22 +01:00
#define SP_INTERNAL_ERROR -7
Fixed BUG#3339: Stored procedures in nonexistent schemas are uncallable. Also added some related security tests and corrected related error messages.
2004-06-15 15:42:28 +02:00
#define SP_NO_DB_ERROR -8
Fixed BUG#9529: Stored Procedures: No Warning on truncation of procedure name during creation. Although it returns an error, consistent with the behaviour for other objects. (Unclear why we would allow the creation of SPs with truncated names.)
2005-05-31 18:36:32 +02:00
#define SP_BAD_IDENTIFIER -9
Increase allowed size of stored procedure bodies to 4GB, and produce a sensible error when that limit is exceeded. (Bug #11602)
2005-07-27 03:08:49 +02:00
#define SP_BODY_TOO_LONG -10
Fix for BUG#24923: Functions with ENUM issues. The problem was that the RETURNS column in the mysql.proc was of CHAR(64). That was not enough for storing long-named datatypes. The fix is to change CHAR(64) to LONGBLOB, and to throw warnings at the time a stored routine is created if some data is truncated during writing into mysql.proc.
2007-10-17 10:13:56 +02:00
#define SP_FLD_STORE_FAILED -11
Most of the groundwork for sprint task 729 (implement FUNCTIONs). Expanded the mysql.proc table, reworked the find/create/drop functions completely, added new functions for FUNCTIONs (lotta functions here :), got rid of some unnecessary use of Item_strings while at it. Extended the parser correspondingly, and fiddled around a bit to make SP FUNCTIONs coexist with UDFs. Can now CREATE and DROP FUNCTIONs. Invoking yet to come...
2003-02-21 17:37:05 +01:00
WL#1366: Use the schema (db) associated with an SP. Phase 4 (final): Remove associated stored procedures when a database is dropped.
2004-03-22 14:44:41 +01:00
/* Drop all routines in database 'db' */
int
sp_drop_db_routines(THD *thd, char *db);
Moved create/find/drop functions to a separate files (sp.cc,sp.h). Fixed backpatching of forward jumps. Implemented LOOP, WHILE, REPEAT (temporarily known as SPREPEAT). Known bug: Expression evaluation still not quite ok (e.g. "x > 0"), which is why IF and CASE is not yet implemented.
2002-12-12 13:14:23 +01:00
sp_head *
Recursion support made for SP (BUG#10100).
2005-11-23 00:11:19 +01:00
sp_find_routine(THD *thd, int type, sp_name *name,
sp_cache **cp, bool cache_only);
Moved create/find/drop functions to a separate files (sp.cc,sp.h). Fixed backpatching of forward jumps. Implemented LOOP, WHILE, REPEAT (temporarily known as SPREPEAT). Known bug: Expression evaluation still not quite ok (e.g. "x > 0"), which is why IF and CASE is not yet implemented.
2002-12-12 13:14:23 +01:00
Bug#44658 Create procedure makes server crash when user does not have ALL privilege MySQL crashes if a user without proper privileges attempts to create a procedure. The crash happens because more than one error state is pushed onto the Diagnostic area. In this particular case the user is denied to implicitly create a new user account with the implicitly granted privileges ALTER- and EXECUTE ROUTINE. The new account is needed if the original user account contained a host mask. A user account with a host mask is a distinct user account in this context. An alternative would be to first get the most permissive user account which include the current user connection and then assign privileges to that account. This behavior change is considered out of scope for this bug patch. The implicit assignment of privileges when a user creates a stored routine is a considered to be a feature for user convenience and as such it is not a critical operation. Any failure to complete this operation is thus considered non-fatal (an error becomes a warning). The patch back ports a stack implementation of the internal error handler interface. This enables the use of multiple error handlers so that it is possible to intercept and cancel errors thrown by lower layers. This is needed as a error handler already is used in the call stack emitting the errors which needs to be converted.
2009-05-29 15:37:54 +02:00
bool
sp_exist_routines(THD *thd, TABLE_LIST *procs, bool any);
Fixed BUG#16303: erroneus stored procedures and functions should be droppable Use a special lookup function for DROP, which doesn't attempt to parse the definition.
2006-01-26 13:29:46 +01:00
int
sp_routine_exists_in_table(THD *thd, int type, sp_name *name);
WL#925 - Privileges for stored routines Implement fine-grained control over access to stored procedures Privileges are cached (same way as existing table/column privs)
2004-12-23 11:46:24 +01:00
Refactoring patch: 1. Refactor sp_show_create_function() and sp_show_create_procedure() into show_create_routine(). 2. Code cleanup: eliminate proxy functions.
2007-05-29 19:22:33 +02:00
bool
sp_show_create_routine(THD *thd, int type, sp_name *name);
Most of the groundwork for sprint task 729 (implement FUNCTIONs). Expanded the mysql.proc table, reworked the find/create/drop functions completely, added new functions for FUNCTIONs (lotta functions here :), got rid of some unnecessary use of Item_strings while at it. Extended the parser correspondingly, and fiddled around a bit to make SP FUNCTIONs coexist with UDFs. Can now CREATE and DROP FUNCTIONs. Invoking yet to come...
2003-02-21 17:37:05 +01:00
WL#1241: SHOW PROCEDURE/FUNCTION WL#1263: Support for the attributes COMMENT and SUID in CREATE/ALTER PROCEDURE/FUNCTION
2003-11-17 18:21:36 +01:00
int
Refactoring patch: 1. Refactor sp_show_create_function() and sp_show_create_procedure() into show_create_routine(). 2. Code cleanup: eliminate proxy functions.
2007-05-29 19:22:33 +02:00
sp_create_routine(THD *thd, int type, sp_head *sp);
WL#1241: SHOW PROCEDURE/FUNCTION WL#1263: Support for the attributes COMMENT and SUID in CREATE/ALTER PROCEDURE/FUNCTION
2003-11-17 18:21:36 +01:00
int
Refactoring patch: 1. Refactor sp_show_create_function() and sp_show_create_procedure() into show_create_routine(). 2. Code cleanup: eliminate proxy functions.
2007-05-29 19:22:33 +02:00
sp_update_routine(THD *thd, int type, sp_name *name, st_sp_chistics *chistics);
WL#1241: SHOW PROCEDURE/FUNCTION WL#1263: Support for the attributes COMMENT and SUID in CREATE/ALTER PROCEDURE/FUNCTION
2003-11-17 18:21:36 +01:00
Some new stuff in the Docs/sp-* files, and renamed a few functions in preparation for future work.
2003-02-04 17:40:18 +01:00
int
Refactoring patch: 1. Refactor sp_show_create_function() and sp_show_create_procedure() into show_create_routine(). 2. Code cleanup: eliminate proxy functions.
2007-05-29 19:22:33 +02:00
sp_drop_routine(THD *thd, int type, sp_name *name);
Made FUNCTIONs work in insert and select queries, as well as nested function invocations. Had to add a cahing mechanism which is in parts an ugly kludge, but it will be reworked once the real SP caching is implemented.
2003-03-02 19:17:41 +01:00
WL#2130: Table locking for stored FUNCTIONs Collect all tables and SPs refered by a statement, and open all tables with an implicit LOCK TABLES. Do find things refered by triggers and views, we open them first (and then repeat this until nothing new is found), before doing the actual lock tables.
2005-02-08 20:52:50 +01:00
/*
Enable support of access to tables from triggers. Thus fix bug #8406 "Triggers crash if referencing a table" and several other related bugs. Fix for bug #11834 "Re-execution of prepared statement with dropped function crashes server." which was spotted during work on previous bugs. Also couple of nice cleanups: - Replaced two separate hashes for stored routines used by statement with one. - Now instead of doing one pass through all routines used in statement for caching them and then doing another pass for adding their tables to table list, we do only one pass during which do both things.
2005-07-09 19:51:59 +02:00
Procedures for pre-caching of stored routines and building table list
for prelocking.
*/
Prelocking-free SPs, post-review fixes: * Don't activate prelocking mode for evaluating procedure arguments when it is not necessary. * Code structure simplification and cleanup. * Cleanup in .test files
2005-08-03 05:37:32 +02:00
void sp_get_prelocking_info(THD *thd, bool *need_prelocking,
bool *first_no_prelocking);
Manual fixes after merging patch for bug #8406 "Triggers crash if referencing a table" with main tree.
2005-07-09 21:11:17 +02:00
void sp_add_used_routine(LEX *lex, Query_arena *arena,
Enable support of access to tables from triggers. Thus fix bug #8406 "Triggers crash if referencing a table" and several other related bugs. Fix for bug #11834 "Re-execution of prepared statement with dropped function crashes server." which was spotted during work on previous bugs. Also couple of nice cleanups: - Replaced two separate hashes for stored routines used by statement with one. - Now instead of doing one pass through all routines used in statement for caching them and then doing another pass for adding their tables to table list, we do only one pass during which do both things.
2005-07-09 19:51:59 +02:00
sp_name *rt, char rt_type);
Fix for bug #12704 "Server crashes during trigger execution". This bug occurs when some trigger for table used by DML statement is created or changed while statement was waiting in lock_tables(). In this situation prelocking set which we have calculated becames invalid which can easily lead to errors and even in some cases to crashes. With proposed patch we no longer silently reopen tables in lock_tables(), instead caller of lock_tables() becomes responsible for reopening tables and recalculation of prelocking set.
2005-09-15 01:56:09 +02:00
void sp_remove_not_own_routines(LEX *lex);
Bug#45613 handle failures from my_hash_insert Not all my_hash_insert() calls are checked for return value. This patch adds appropriate checks and failure responses where needed.
2009-11-20 16:18:01 +01:00
bool sp_update_sp_used_routines(HASH *dst, HASH *src);
Merge bk-internal.mysql.com:/home/bk/mysql-5.0 into mysql.com:/home/dlenev/src/mysql-5.0-bg11555-2
2005-12-07 10:47:25 +01:00
int sp_cache_routines_and_add_tables(THD *thd, LEX *lex,
Bug#21039 Transaction cache not flushed after SELECT CREATE - Add prelocking for stored procedures that uses sp or sf - Update test result for sp_error(reported as bug#21294) - Make note about new error message from sp-error(bug#17244)
2006-07-26 12:40:26 +02:00
bool first_no_prelock);
Fixed BUG#14233: Crash after tampering with the mysql.proc table Added error checking for errors when attempting to use stored procedures after the mysql.proc table has been dropped, corrupted, or tampered with. Test cases were put in a separate file (sp-destruct.test).
2005-10-26 15:34:57 +02:00
int sp_cache_routines_and_add_tables_for_view(THD *thd, LEX *lex,
Merge bk-internal.mysql.com:/home/bk/mysql-5.0 into mysql.com:/home/dlenev/src/mysql-5.0-bg11555-2
2005-12-07 10:47:25 +01:00
TABLE_LIST *view);
Fixed BUG#14233: Crash after tampering with the mysql.proc table Added error checking for errors when attempting to use stored procedures after the mysql.proc table has been dropped, corrupted, or tampered with. Test cases were put in a separate file (sp-destruct.test).
2005-10-26 15:34:57 +02:00
int sp_cache_routines_and_add_tables_for_triggers(THD *thd, LEX *lex,
Merge bk-internal.mysql.com:/home/bk/mysql-5.0 into mysql.com:/home/dlenev/src/mysql-5.0-bg11555-2
2005-12-07 10:47:25 +01:00
TABLE_LIST *table);
Enable support of access to tables from triggers. Thus fix bug #8406 "Triggers crash if referencing a table" and several other related bugs. Fix for bug #11834 "Re-execution of prepared statement with dropped function crashes server." which was spotted during work on previous bugs. Also couple of nice cleanups: - Replaced two separate hashes for stored routines used by statement with one. - Now instead of doing one pass through all routines used in statement for caching them and then doing another pass for adding their tables to table list, we do only one pass during which do both things.
2005-07-09 19:51:59 +02:00
WL#3817: Simplify string / memory area types and make things more consistent (first part) The following type conversions was done: - Changed byte to uchar - Changed gptr to uchar* - Change my_string to char * - Change my_size_t to size_t - Change size_s to size_t Removed declaration of byte, gptr, my_string, my_size_t and size_s. Following function parameter changes was done: - All string functions in mysys/strings was changed to use size_t instead of uint for string lengths. - All read()/write() functions changed to use size_t (including vio). - All protocoll functions changed to use size_t instead of uint - Functions that used a pointer to a string length was changed to use size_t* - Changed malloc(), free() and related functions from using gptr to use void * as this requires fewer casts in the code and is more in line with how the standard functions work. - Added extra length argument to dirname_part() to return the length of the created string. - Changed (at least) following functions to take uchar* as argument: - db_dump() - my_net_write() - net_write_command() - net_store_data() - DBUG_DUMP() - decimal2bin() & bin2decimal() - Changed my_compress() and my_uncompress() to use size_t. Changed one argument to my_uncompress() from a pointer to a value as we only return one value (makes function easier to use). - Changed type of 'pack_data' argument to packfrm() to avoid casts. - Changed in readfrm() and writefrom(), ha_discover and handler::discover() the type for argument 'frmdata' to uchar** to avoid casts. - Changed most Field functions to use uchar* instead of char* (reduced a lot of casts). - Changed field->val_xxx(xxx, new_ptr) to take const pointers. Other changes: - Removed a lot of not needed casts - Added a few new cast required by other changes - Added some cast to my_multi_malloc() arguments for safety (as string lengths needs to be uint, not size_t). - Fixed all calls to hash-get-key functions to use size_t*. (Needed to be done explicitely as this conflict was often hided by casting the function to hash_get_key). - Changed some buffers to memory regions to uchar* to avoid casts. - Changed some string lengths from uint to size_t. - Changed field->ptr to be uchar* instead of char*. This allowed us to get rid of a lot of casts. - Some changes from true -> TRUE, false -> FALSE, unsigned char -> uchar - Include zlib.h in some files as we needed declaration of crc32() - Changed MY_FILE_ERROR to be (size_t) -1. - Changed many variables to hold the result of my_read() / my_write() to be size_t. This was needed to properly detect errors (which are returned as (size_t) -1). - Removed some very old VMS code - Changed packfrm()/unpackfrm() to not be depending on uint size (portability fix) - Removed windows specific code to restore cursor position as this causes slowdown on windows and we should not mix read() and pread() calls anyway as this is not thread safe. Updated function comment to reflect this. Changed function that depended on original behavior of my_pwrite() to itself restore the cursor position (one such case). - Added some missing checking of return value of malloc(). - Changed definition of MOD_PAD_CHAR_TO_FULL_LENGTH to avoid 'long' overflow. - Changed type of table_def::m_size from my_size_t to ulong to reflect that m_size is the number of elements in the array, not a string/memory length. - Moved THD::max_row_length() to table.cc (as it's not depending on THD). Inlined max_row_length_blob() into this function. - More function comments - Fixed some compiler warnings when compiled without partitions. - Removed setting of LEX_STRING() arguments in declaration (portability fix). - Some trivial indentation/variable name changes. - Some trivial code simplifications: - Replaced some calls to alloc_root + memcpy to use strmake_root()/strdup_root(). - Changed some calls from memdup() to strmake() (Safety fix) - Simpler loops in client-simple.c
2007-05-10 11:59:39 +02:00
extern "C" uchar* sp_sroutine_key(const uchar *ptr, size_t *plen,
my_bool first);
WL#1366: Use the schema (db) associated with an SP. Phase 2: Make SPs belong to a DB, and use qualified names. As a side effect, using USE in an SP is no longer allowed. (It just doesn't work otherwise.)
2004-03-11 17:18:59 +01:00
Fix for bug #10055 "Using stored function with information_schema causes empty result set". To enable full access to contents of I_S tables from stored functions or statements that use them, we manipulate with thread's open tables state and ensure that we won't cause deadlock when we open tables by ignoring flushes and name-locks. Building of contents of I_S.TABLES no longer requires locking of tables since we use use handler::info() method with HA_STATUS_AUTO flag instead of handler::update_auto_increment() for obtaining information about auto-increment values. But this also means that handlers have to implement support for HA_STATUS_AUTO flag (particularly InnoDB needs it).
2005-08-08 15:46:06 +02:00
/*
Routines which allow open/lock and close mysql.proc table even when
we already have some tables open and locked.
*/
TABLE *open_proc_table_for_read(THD *thd, Open_tables_state *backup);
Moved create/find/drop functions to a separate files (sp.cc,sp.h). Fixed backpatching of forward jumps. Implemented LOOP, WHILE, REPEAT (temporarily known as SPREPEAT). Known bug: Expression evaluation still not quite ok (e.g. "x > 0"), which is why IF and CASE is not yet implemented.
2002-12-12 13:14:23 +01:00
#endif /* _SP_H_ */
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