mysql_priv.h 46.6 KB
Newer Older
monty@mashka.mysql.fi's avatar
monty@mashka.mysql.fi committed
1
/* Copyright (C) 2000-2003 MySQL AB
2

bk@work.mysql.com's avatar
bk@work.mysql.com committed
3 4 5 6
   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.
7

bk@work.mysql.com's avatar
bk@work.mysql.com committed
8 9 10 11
   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.
12

bk@work.mysql.com's avatar
bk@work.mysql.com committed
13 14 15 16
   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 */

17
#include <my_global.h>
18 19
#include <mysql_version.h>
#include <mysql_embed.h>
bk@work.mysql.com's avatar
bk@work.mysql.com committed
20
#include <my_sys.h>
21
#include <my_time.h>
bk@work.mysql.com's avatar
bk@work.mysql.com committed
22 23 24 25 26
#include <m_string.h>
#include <hash.h>
#include <signal.h>
#include <thr_lock.h>
#include <my_base.h>			/* Needed by field.h */
27
#include "sql_bitmap.h"
bk@work.mysql.com's avatar
bk@work.mysql.com committed
28

monty@hundin.mysql.fi's avatar
monty@hundin.mysql.fi committed
29
#ifdef __EMX__
salle@geopard.online.bg's avatar
salle@geopard.online.bg committed
30
#undef write  /* remove pthread.h macro definition for EMX */
monty@hundin.mysql.fi's avatar
monty@hundin.mysql.fi committed
31
#endif
32

33 34 35 36 37 38 39 40
/* TODO convert all these three maps to Bitmap classes */
typedef ulonglong table_map;          /* Used for table bits in join */
typedef Bitmap<64> key_map;           /* Used for finding keys */
typedef ulong key_part_map;           /* Used for finding key parts */

/* useful constants */
extern const key_map key_map_empty;
extern const key_map key_map_full;
41
extern const char *primary_key_name;
bk@work.mysql.com's avatar
bk@work.mysql.com committed
42 43

#include "mysql_com.h"
tonu@hundin.mysql.fi's avatar
tonu@hundin.mysql.fi committed
44
#include <violite.h>
bk@work.mysql.com's avatar
bk@work.mysql.com committed
45 46
#include "unireg.h"

47
void init_sql_alloc(MEM_ROOT *root, uint block_size, uint pre_alloc_size);
bk@work.mysql.com's avatar
bk@work.mysql.com committed
48 49 50 51 52 53
gptr sql_alloc(unsigned size);
gptr sql_calloc(unsigned size);
char *sql_strdup(const char *str);
char *sql_strmake(const char *str,uint len);
gptr sql_memdup(const void * ptr,unsigned size);
void sql_element_free(void *ptr);
monty@mashka.mysql.fi's avatar
monty@mashka.mysql.fi committed
54 55 56 57
char *sql_strmake_with_convert(const char *str, uint32 arg_length,
			       CHARSET_INFO *from_cs,
			       uint32 max_res_length,
			       CHARSET_INFO *to_cs, uint32 *result_length);
58
void kill_one_thread(THD *thd, ulong id);
59
bool net_request_file(NET* net, const char* fname);
sasha@mysql.sashanet.com's avatar
sasha@mysql.sashanet.com committed
60
char* query_table_status(THD *thd,const char *db,const char *table_name);
bk@work.mysql.com's avatar
bk@work.mysql.com committed
61 62 63 64 65 66

#define x_free(A)	{ my_free((gptr) (A),MYF(MY_WME | MY_FAE | MY_ALLOW_ZERO_PTR)); }
#define safeFree(x)	{ if(x) { my_free((gptr) x,MYF(0)); x = NULL; } }
#define PREV_BITS(type,A)	((type) (((type) 1 << (A)) -1))
#define all_bits_set(A,B) ((A) & (B) != (B))

67 68
extern CHARSET_INFO *system_charset_info, *files_charset_info ;
extern CHARSET_INFO *national_charset_info, *table_alias_charset;
69

bk@work.mysql.com's avatar
bk@work.mysql.com committed
70
/***************************************************************************
71
  Configuration parameters
bk@work.mysql.com's avatar
bk@work.mysql.com committed
72 73 74
****************************************************************************/

#define ACL_CACHE_SIZE		256
75
#define MAX_PASSWORD_LENGTH	32
bk@work.mysql.com's avatar
bk@work.mysql.com committed
76 77 78 79 80
#define HOST_CACHE_SIZE		128
#define MAX_ACCEPT_RETRY	10	// Test accept this many times
#define MAX_FIELDS_BEFORE_HASH	32
#define USER_VARS_HASH_SIZE     16
#define STACK_MIN_SIZE		8192	// Abort if less stack during eval.
81
#define STACK_BUFF_ALLOC	64	// For stack overrun checks
bk@work.mysql.com's avatar
bk@work.mysql.com committed
82 83 84
#ifndef MYSQLD_NET_RETRY_COUNT
#define MYSQLD_NET_RETRY_COUNT  10	// Abort read after this many int.
#endif
85
#define TEMP_POOL_SIZE          128
86 87 88 89 90 91 92 93 94

#define QUERY_ALLOC_BLOCK_SIZE		8192
#define QUERY_ALLOC_PREALLOC_SIZE   	8192
#define TRANS_ALLOC_BLOCK_SIZE		4096
#define TRANS_ALLOC_PREALLOC_SIZE	4096
#define RANGE_ALLOC_BLOCK_SIZE		2048
#define ACL_ALLOC_BLOCK_SIZE		1024
#define UDF_ALLOC_BLOCK_SIZE		1024
#define TABLE_ALLOC_BLOCK_SIZE		1024
95 96 97
#define BDB_LOG_ALLOC_BLOCK_SIZE	1024
#define WARN_ALLOC_BLOCK_SIZE		2048
#define WARN_ALLOC_PREALLOC_SIZE	1024
98

99 100
/*
  The following parameters is to decide when to use an extra cache to
101
  optimise seeks when reading a big table in sorted order
102
*/
bk@work.mysql.com's avatar
bk@work.mysql.com committed
103 104
#define MIN_FILE_LENGTH_TO_USE_ROW_CACHE (16L*1024*1024)
#define MIN_ROWS_TO_USE_TABLE_CACHE	 100
105
#define MIN_ROWS_TO_USE_BULK_INSERT	 100
bk@work.mysql.com's avatar
bk@work.mysql.com committed
106

107 108 109 110 111
/*
  The following is used to decide if MySQL should use table scanning
  instead of reading with keys.  The number says how many evaluation of the
  WHERE clause is comparable to reading one extra row from a table.
*/
112
#define TIME_FOR_COMPARE   5	// 5 compares == one read
113 114 115 116 117 118

/*
  Number of rows in a reference table when refereed through a not unique key.
  This value is only used when we don't know anything about the key
  distribution.
*/
119
#define MATCHING_ROWS_IN_OTHER_TABLE 10
bk@work.mysql.com's avatar
bk@work.mysql.com committed
120 121 122 123 124 125 126 127 128 129

/* Don't pack string keys shorter than this (if PACK_KEYS=1 isn't used) */
#define KEY_DEFAULT_PACK_LENGTH 8

/* Characters shown for the command in 'show processlist' */
#define PROCESS_LIST_WIDTH 100

/* Time handling defaults */
#define TIMESTAMP_MAX_YEAR 2038
#define YY_PART_YEAR	   70
130 131 132
#define TIMESTAMP_MIN_YEAR (1900 + YY_PART_YEAR - 1)
#define TIMESTAMP_MAX_VALUE 2145916799
#define TIMESTAMP_MIN_VALUE 1
bk@work.mysql.com's avatar
bk@work.mysql.com committed
133 134 135 136 137 138 139 140 141 142 143 144
#define PRECISION_FOR_DOUBLE 53
#define PRECISION_FOR_FLOAT  24

/* The following can also be changed from the command line */
#define CONNECT_TIMEOUT		5		// Do not wait long for connect
#define DEFAULT_CONCURRENCY	10
#define DELAYED_LIMIT		100		/* pause after xxx inserts */
#define DELAYED_QUEUE_SIZE	1000
#define DELAYED_WAIT_TIMEOUT	5*60		/* Wait for delayed insert */
#define FLUSH_TIME		0		/* Don't flush tables */
#define MAX_CONNECT_ERRORS	10		// errors before disabling host

monty@hundin.mysql.fi's avatar
monty@hundin.mysql.fi committed
145
#if defined(__WIN__) || defined(OS2)
bk@work.mysql.com's avatar
bk@work.mysql.com committed
146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161
#define IF_WIN(A,B) (A)
#undef	FLUSH_TIME
#define FLUSH_TIME	1800			/* Flush every half hour */

#define INTERRUPT_PRIOR -2
#define CONNECT_PRIOR	-1
#define WAIT_PRIOR	0
#define QUERY_PRIOR	2
#else
#define IF_WIN(A,B) (B)
#define INTERRUPT_PRIOR 10
#define CONNECT_PRIOR	9
#define WAIT_PRIOR	8
#define QUERY_PRIOR	6
#endif /* __WIN92__ */

monty@donna.mysql.com's avatar
monty@donna.mysql.com committed
162
	/* Bits from testflag */
bk@work.mysql.com's avatar
bk@work.mysql.com committed
163 164 165 166 167 168 169 170
#define TEST_PRINT_CACHED_TABLES 1
#define TEST_NO_KEY_GROUP	 2
#define TEST_MIT_THREAD		4
#define TEST_BLOCKING		8
#define TEST_KEEP_TMP_TABLES	16
#define TEST_NO_THREADS		32	/* For debugging under Linux */
#define TEST_READCHECK		64	/* Force use of readcheck */
#define TEST_NO_EXTRA		128
171
#define TEST_CORE_ON_SIGNAL	256	/* Give core if signal */
172
#define TEST_NO_STACKTRACE	512
173
#define TEST_SIGINT		1024	/* Allow sigint on threads */
174 175
#define TEST_SYNCHRONIZATION	2048	/* get server to do sleep in some 
                                                                       places */
bk@work.mysql.com's avatar
bk@work.mysql.com committed
176

177
/* options for select set by the yacc parser (stored in lex->options) */
178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202
#define SELECT_DISTINCT		(1L << 0)
#define SELECT_STRAIGHT_JOIN	(1L << 1)
#define SELECT_DESCRIBE		(1L << 2)
#define SELECT_SMALL_RESULT	(1L << 3)
#define SELECT_BIG_RESULT	(1L << 4)
#define OPTION_FOUND_ROWS	(1L << 5)
#define OPTION_TO_QUERY_CACHE   (1L << 6)
#define SELECT_NO_JOIN_CACHE	(1L << 7)       /* Intern */
#define OPTION_BIG_TABLES       (1L << 8)       /* for SQL OPTION */
#define OPTION_BIG_SELECTS      (1L << 9)       /* for SQL OPTION */
#define OPTION_LOG_OFF          (1L << 10)
#define OPTION_UPDATE_LOG       (1L << 11)      /* update log flag */
#define TMP_TABLE_ALL_COLUMNS   (1L << 12)
#define OPTION_WARNINGS         (1L << 13)
#define OPTION_AUTO_IS_NULL     (1L << 14)
#define OPTION_FOUND_COMMENT    (1L << 15)
#define OPTION_SAFE_UPDATES     (1L << 16)
#define OPTION_BUFFER_RESULT    (1L << 17)
#define OPTION_BIN_LOG          (1L << 18)
#define OPTION_NOT_AUTOCOMMIT   (1L << 19)
#define OPTION_BEGIN            (1L << 20)
#define OPTION_TABLE_LOCK       (1L << 21)
#define OPTION_QUICK            (1L << 22)
#define OPTION_QUOTE_SHOW_CREATE (1L << 23)
#define OPTION_INTERNAL_SUBTRANSACTIONS (1L << 24)
203

204
/* Set if we are updating a non-transaction safe table */
205
#define OPTION_STATUS_NO_TRANS_UPDATE   (1L << 25)
206

207 208
/* The following can be set when importing tables in a 'wrong order'
   to suppress foreign key checks */
209
#define OPTION_NO_FOREIGN_KEY_CHECKS    (1L << 26)
210 211
/* The following speeds up inserts to InnoDB tables by suppressing unique
   key checks in some cases */
212 213 214
#define OPTION_RELAXED_UNIQUE_CHECKS    (1L << 27)
#define SELECT_NO_UNLOCK                (1L << 28)

215
/* Bits for different SQL modes modes (including ANSI mode) */
216 217 218 219
#define MODE_REAL_AS_FLOAT      	1
#define MODE_PIPES_AS_CONCAT    	2
#define MODE_ANSI_QUOTES        	4
#define MODE_IGNORE_SPACE		8
220
#define MODE_NOT_USED			16
221 222
#define MODE_ONLY_FULL_GROUP_BY		32
#define MODE_NO_UNSIGNED_SUBTRACTION	64
223
#define MODE_NO_DIR_IN_CREATE		128
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
224 225 226 227
#define MODE_POSTGRESQL			256
#define MODE_ORACLE			512
#define MODE_MSSQL			1024
#define MODE_DB2			2048
228
#define MODE_MAXDB			4096
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
229 230 231 232 233
#define MODE_NO_KEY_OPTIONS             8192
#define MODE_NO_TABLE_OPTIONS          16384 
#define MODE_NO_FIELD_OPTIONS          32768
#define MODE_MYSQL323                  65536
#define MODE_MYSQL40                   (MODE_MYSQL323*2)
234
#define MODE_ANSI	               (MODE_MYSQL40*2)
235
#define MODE_NO_AUTO_VALUE_ON_ZERO     (MODE_ANSI*2)
236

bk@work.mysql.com's avatar
bk@work.mysql.com committed
237 238
#define RAID_BLOCK_SIZE 1024

239 240
#define MY_CHARSET_BIN_MB_MAXLEN 1

241 242 243
// uncachable cause
#define UNCACHEABLE_DEPENDENT   1
#define UNCACHEABLE_RAND        2
244 245 246
#define UNCACHEABLE_SIDEEFFECT	4
// forcing to save JOIN for explain
#define UNCACHEABLE_EXPLAIN     8
247

248
#ifdef EXTRA_DEBUG
249 250 251 252 253 254 255
/*
  Sync points allow us to force the server to reach a certain line of code
  and block there until the client tells the server it is ok to go on.
  The client tells the server to block with SELECT GET_LOCK()
  and unblocks it with SELECT RELEASE_LOCK(). Used for debugging difficult
  concurrency problems
*/
256 257 258 259 260
#define DBUG_SYNC_POINT(lock_name,lock_timeout) \
 debug_sync_point(lock_name,lock_timeout)
void debug_sync_point(const char* lock_name, uint lock_timeout);
#else
#define DBUG_SYNC_POINT(lock_name,lock_timeout)
261
#endif /* EXTRA_DEBUG */
262

bk@work.mysql.com's avatar
bk@work.mysql.com committed
263 264 265 266
/* BINLOG_DUMP options */

#define BINLOG_DUMP_NON_BLOCK   1

tim@cane.mysql.fi's avatar
tim@cane.mysql.fi committed
267 268 269 270
/* sql_show.cc:show_log_files() */
#define SHOW_LOG_STATUS_FREE "FREE"
#define SHOW_LOG_STATUS_INUSE "IN USE"

271 272 273
/* Options to add_table_to_list() */
#define TL_OPTION_UPDATING	1
#define TL_OPTION_FORCE_INDEX	2
igor@rurik.mysql.com's avatar
igor@rurik.mysql.com committed
274
#define TL_OPTION_IGNORE_LEAVES 4
275

bk@work.mysql.com's avatar
bk@work.mysql.com committed
276 277 278 279 280 281 282
/* Some portable defines */

#define portable_sizeof_char_ptr 8

#define tmp_file_prefix "#sql"			/* Prefix for tmp tables */
#define tmp_file_prefix_length 4

283 284 285 286
/* Flags for calc_week() function.  */
#define WEEK_MONDAY_FIRST    1
#define WEEK_YEAR            2
#define WEEK_FIRST_WEEKDAY   4
287 288 289 290 291 292 293 294
/*
  Required buffer length for make_date, make_time, make_datetime
  and TIME_to_string functions. Note, that the caller is still
  responsible to check that given TIME structure has values
  in valid ranges, otherwise size of the buffer could be not 
  enough.
*/
#define MAX_DATE_REP_LENGTH 30
295

bk@work.mysql.com's avatar
bk@work.mysql.com committed
296 297
struct st_table;
class THD;
298
class Statement;
bk@work.mysql.com's avatar
bk@work.mysql.com committed
299 300 301 302 303 304 305

/* Struct to handle simple linked lists */

typedef struct st_sql_list {
  uint elements;
  byte *first;
  byte **next;
306 307 308 309 310 311 312 313 314 315 316 317 318 319

  inline void empty()
  {
    elements=0;
    first=0;
    next= &first;
  }
  inline void link_in_list(byte *element,byte **next_ptr)
  {
    elements++;
    (*next)=element;
    next= next_ptr;
    *next=0;
  }
320 321 322 323 324 325 326 327 328 329 330
  inline void save_and_clear(struct st_sql_list *save)
  {
    *save= *this;
    empty();
  }
  inline void push_front(struct st_sql_list *save)
  {
    *save->next= first;				/* link current list last */
    first= save->first;
    elements+= save->elements;
  }
bk@work.mysql.com's avatar
bk@work.mysql.com committed
331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348
} SQL_LIST;


uint nr_of_decimals(const char *str);		/* Neaded by sql_string.h */

extern pthread_key(THD*, THR_THD);
inline THD *_current_thd(void)
{
  return my_pthread_getspecific_ptr(THD*,THR_THD);
}
#define current_thd _current_thd()

#include "sql_string.h"
#include "sql_list.h"
#include "sql_map.h"
#include "handler.h"
#include "table.h"
#include "field.h"				/* Field definitions */
349
#include "protocol.h"
bk@work.mysql.com's avatar
bk@work.mysql.com committed
350
#include "sql_udf.h"
351
class user_var_entry;
bk@work.mysql.com's avatar
bk@work.mysql.com committed
352
#include "item.h"
353
#include "tztime.h"
bell@sanja.is.com.ua's avatar
bell@sanja.is.com.ua committed
354
typedef Comp_creator* (*chooser_compare_func_creator)(bool invert);
355 356 357
/* sql_parse.cc */
void free_items(Item *item);
void cleanup_items(Item *item);
358 359
class THD;
void close_thread_tables(THD *thd, bool locked=0, bool skip_derived=0);
360
int check_one_table_access(THD *thd, ulong privilege,
bell@sanja.is.com.ua's avatar
bell@sanja.is.com.ua committed
361
			   TABLE_LIST *tables);
362 363 364 365 366
bool check_merge_table_access(THD *thd, char *db,
			      TABLE_LIST *table_list);
int multi_update_precheck(THD *thd, TABLE_LIST *tables);
int multi_delete_precheck(THD *thd, TABLE_LIST *tables, uint *table_count);
int insert_select_precheck(THD *thd, TABLE_LIST *tables);
bell@sanja.is.com.ua's avatar
bell@sanja.is.com.ua committed
367 368 369 370 371
int update_precheck(THD *thd, TABLE_LIST *tables);
int delete_precheck(THD *thd, TABLE_LIST *tables);
int insert_precheck(THD *thd, TABLE_LIST *tables, bool update);
int create_table_precheck(THD *thd, TABLE_LIST *tables,
			  TABLE_LIST *create_table);
bk@work.mysql.com's avatar
bk@work.mysql.com committed
372 373
#include "sql_class.h"
#include "opt_range.h"
374 375

#ifdef HAVE_QUERY_CACHE
376 377 378
struct Query_cache_query_flags
{
  unsigned int client_long_flag:1;
379 380 381
  uint character_set_client_num;
  uint character_set_results_num;
  uint collation_connection_num;
382
  ha_rows limit;
383
  Time_zone *time_zone;
384 385
};
#define QUERY_CACHE_FLAGS_SIZE sizeof(Query_cache_query_flags)
monty@hundin.mysql.fi's avatar
monty@hundin.mysql.fi committed
386
#include "sql_cache.h"
387 388 389 390
#define query_cache_store_query(A, B) query_cache.store_query(A, B)
#define query_cache_destroy() query_cache.destroy()
#define query_cache_result_size_limit(A) query_cache.result_size_limit(A)
#define query_cache_resize(A) query_cache.resize(A)
391
#define query_cache_set_min_res_unit(A) query_cache.set_min_res_unit(A)
392 393 394 395 396 397 398
#define query_cache_invalidate3(A, B, C) query_cache.invalidate(A, B, C)
#define query_cache_invalidate1(A) query_cache.invalidate(A)
#define query_cache_send_result_to_client(A, B, C) \
  query_cache.send_result_to_client(A, B, C)
#define query_cache_invalidate_by_MyISAM_filename_ref \
  &query_cache_invalidate_by_MyISAM_filename
#else
399
#define QUERY_CACHE_FLAGS_SIZE 0
400 401 402 403
#define query_cache_store_query(A, B)
#define query_cache_destroy()
#define query_cache_result_size_limit(A)
#define query_cache_resize(A)
404
#define query_cache_set_min_res_unit(A)
405 406 407 408 409 410 411 412 413
#define query_cache_invalidate3(A, B, C)
#define query_cache_invalidate1(A)
#define query_cache_send_result_to_client(A, B, C) 0
#define query_cache_invalidate_by_MyISAM_filename_ref NULL

#define query_cache_abort(A)
#define query_cache_end_of_result(A)
#define query_cache_invalidate_by_MyISAM_filename_ref NULL
#endif /*HAVE_QUERY_CACHE*/
bk@work.mysql.com's avatar
bk@work.mysql.com committed
414

415 416
#define prepare_execute(A) ((A)->command == COM_EXECUTE)

417
int mysql_create_db(THD *thd, char *db, HA_CREATE_INFO *create, bool silent);
418
int mysql_alter_db(THD *thd, const char *db, HA_CREATE_INFO *create);
monty@hundin.mysql.fi's avatar
monty@hundin.mysql.fi committed
419
int mysql_rm_db(THD *thd,char *db,bool if_exists, bool silent);
420
void mysql_binlog_send(THD* thd, char* log_ident, my_off_t pos, ushort flags);
421 422
int mysql_rm_table(THD *thd,TABLE_LIST *tables, my_bool if_exists,
		   my_bool drop_temporary);
423
int mysql_rm_table_part2(THD *thd, TABLE_LIST *tables, bool if_exists,
424
			 bool drop_temporary, bool log_query);
425
int mysql_rm_table_part2_with_lock(THD *thd, TABLE_LIST *tables,
426
				   bool if_exists, bool drop_temporary,
427
				   bool log_query);
bk@work.mysql.com's avatar
bk@work.mysql.com committed
428 429
int quick_rm_table(enum db_type base,const char *db,
		   const char *table_name);
430
bool mysql_rename_tables(THD *thd, TABLE_LIST *table_list);
bk@work.mysql.com's avatar
bk@work.mysql.com committed
431 432
bool mysql_change_db(THD *thd,const char *name);
void mysql_parse(THD *thd,char *inBuf,uint length);
433
bool mysql_test_parse_for_slave(THD *thd,char *inBuf,uint length);
434
bool is_update_query(enum enum_sql_command command);
435
bool alloc_query(THD *thd, char *packet, ulong packet_length);
436
void mysql_init_select(LEX *lex);
437
void mysql_init_query(THD *thd);
438
bool mysql_new_select(LEX *lex, bool move_down);
439
void create_select_for_variable(const char *var_name);
monty@hundin.mysql.fi's avatar
monty@hundin.mysql.fi committed
440
void mysql_init_multi_delete(LEX *lex);
441
void init_max_user_conn(void);
442
void init_update_queries(void);
443
void free_max_user_conn(void);
444 445
extern "C" pthread_handler_decl(handle_one_connection,arg);
extern "C" pthread_handler_decl(handle_bootstrap,arg);
bk@work.mysql.com's avatar
bk@work.mysql.com committed
446 447
void end_thread(THD *thd,bool put_in_cache);
void flush_thread_cache();
448
void mysql_execute_command(THD *thd);
bk@work.mysql.com's avatar
bk@work.mysql.com committed
449
bool do_command(THD *thd);
450 451
bool dispatch_command(enum enum_server_command command, THD *thd,
		      char* packet, uint packet_length);
452
bool check_dup(const char *db, const char *name, TABLE_LIST *tables);
453

454
bool table_cache_init(void);
bk@work.mysql.com's avatar
bk@work.mysql.com committed
455 456 457
void table_cache_free(void);
uint cached_tables(void);
void kill_mysql(void);
458
void close_connection(THD *thd, uint errcode, bool lock);
hf@deer.(none)'s avatar
hf@deer.(none) committed
459 460 461 462
bool reload_acl_and_cache(THD *thd, ulong options, TABLE_LIST *tables, 
                          bool *write_to_binlog);
bool check_access(THD *thd, ulong access, const char *db, ulong *save_priv,
		  bool no_grant, bool no_errors);
463
bool check_table_access(THD *thd, ulong want_access, TABLE_LIST *tables,
hf@deer.(none)'s avatar
hf@deer.(none) committed
464
			bool no_errors);
465
bool check_global_access(THD *thd, ulong want_access);
bk@work.mysql.com's avatar
bk@work.mysql.com committed
466

467 468 469
int mysql_backup_table(THD* thd, TABLE_LIST* table_list);
int mysql_restore_table(THD* thd, TABLE_LIST* table_list);

470 471
int mysql_checksum_table(THD* thd, TABLE_LIST* table_list,
		      HA_CHECK_OPT* check_opt);
bk@work.mysql.com's avatar
bk@work.mysql.com committed
472 473 474 475
int mysql_check_table(THD* thd, TABLE_LIST* table_list,
		      HA_CHECK_OPT* check_opt);
int mysql_repair_table(THD* thd, TABLE_LIST* table_list,
		       HA_CHECK_OPT* check_opt);
476 477 478 479
int mysql_analyze_table(THD* thd, TABLE_LIST* table_list,
			HA_CHECK_OPT* check_opt);
int mysql_optimize_table(THD* thd, TABLE_LIST* table_list,
			 HA_CHECK_OPT* check_opt);
480 481
int mysql_assign_to_keycache(THD* thd, TABLE_LIST* table_list,
			     LEX_STRING *key_cache_name);
igor@rurik.mysql.com's avatar
igor@rurik.mysql.com committed
482
int mysql_preload_keys(THD* thd, TABLE_LIST* table_list);
483 484
int reassign_keycache_tables(THD* thd, KEY_CACHE *src_cache,
                             KEY_CACHE *dst_cache);
igor@rurik.mysql.com's avatar
igor@rurik.mysql.com committed
485

486
bool check_simple_select();
bk@work.mysql.com's avatar
bk@work.mysql.com committed
487

488
SORT_FIELD * make_unireg_sortorder(ORDER *order, uint *length);
489 490 491 492
int setup_order(THD *thd, Item **ref_pointer_array, TABLE_LIST *tables,
		List<Item> &fields, List <Item> &all_fields, ORDER *order);
int setup_group(THD *thd, Item **ref_pointer_array, TABLE_LIST *tables,
		List<Item> &fields, List<Item> &all_fields, ORDER *order,
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
493
		bool *hidden_group_fields);
494

495
int handle_select(THD *thd, LEX *lex, select_result *result);
496 497 498 499 500
int mysql_select(THD *thd, Item ***rref_pointer_array,
		 TABLE_LIST *tables, uint wild_num,  List<Item> &list,
		 COND *conds, uint og_num, ORDER *order, ORDER *group,
		 Item *having, ORDER *proc_param, ulong select_type, 
		 select_result *result, SELECT_LEX_UNIT *unit, 
501
		 SELECT_LEX *select_lex);
502
void free_underlaid_joins(THD *thd, SELECT_LEX *select);
bell@sanja.is.com.ua's avatar
bell@sanja.is.com.ua committed
503
void fix_tables_pointers(SELECT_LEX *select_lex);
504 505
int mysql_explain_union(THD *thd, SELECT_LEX_UNIT *unit,
			select_result *result);
bell@sanja.is.com.ua's avatar
bell@sanja.is.com.ua committed
506 507
int mysql_explain_select(THD *thd, SELECT_LEX *sl, char const *type,
			 select_result *result);
508
int mysql_union(THD *thd, LEX *lex, select_result *result,
509
		SELECT_LEX_UNIT *unit);
510
int mysql_handle_derived(LEX *lex);
511
Field *create_tmp_field(THD *thd, TABLE *table,Item *item, Item::Type type,
monty@mashka.mysql.fi's avatar
monty@mashka.mysql.fi committed
512
			Item ***copy_func, Field **from_field,
bk@work.mysql.com's avatar
bk@work.mysql.com committed
513
			bool group,bool modify_item);
514 515 516 517 518
int mysql_prepare_table(THD *thd, HA_CREATE_INFO *create_info,
		       List<create_field> &fields,
		       List<Key> &keys, uint &db_options, 
		       handler *file, KEY *&key_info_buffer,
		       uint &key_count, int select_field_count);
bk@work.mysql.com's avatar
bk@work.mysql.com committed
519 520 521
int mysql_create_table(THD *thd,const char *db, const char *table_name,
		       HA_CREATE_INFO *create_info,
		       List<create_field> &fields, List<Key> &keys,
522
		       bool tmp_table, bool no_log, uint select_field_count);
bk@work.mysql.com's avatar
bk@work.mysql.com committed
523 524 525 526 527 528 529 530 531 532
TABLE *create_table_from_items(THD *thd, HA_CREATE_INFO *create_info,
			       const char *db, const char *name,
			       List<create_field> *extra_fields,
			       List<Key> *keys,
			       List<Item> *items,
			       MYSQL_LOCK **lock);
int mysql_alter_table(THD *thd, char *new_db, char *new_name,
		      HA_CREATE_INFO *create_info,
		      TABLE_LIST *table_list,
		      List<create_field> &fields,
533 534
		      List<Key> &keys,
		      uint order_num, ORDER *order,
535
		      enum enum_duplicates handle_duplicates,
536 537
		      ALTER_INFO *alter_info, bool do_send_ok=1);
int mysql_recreate_table(THD *thd, TABLE_LIST *table_list, bool do_send_ok);
venu@myvenu.com's avatar
venu@myvenu.com committed
538 539 540
int mysql_create_like_table(THD *thd, TABLE_LIST *table,
                            HA_CREATE_INFO *create_info,
                            Table_ident *src_table);
541 542 543 544 545
bool mysql_rename_table(enum db_type base,
			const char *old_db,
			const char * old_name,
			const char *new_db,
			const char * new_name);
bk@work.mysql.com's avatar
bk@work.mysql.com committed
546 547
int mysql_create_index(THD *thd, TABLE_LIST *table_list, List<Key> &keys);
int mysql_drop_index(THD *thd, TABLE_LIST *table_list,
548
		     ALTER_INFO *alter_info);
bell@sanja.is.com.ua's avatar
bell@sanja.is.com.ua committed
549 550 551
int mysql_prepare_update(THD *thd, TABLE_LIST *table_list,
			 TABLE_LIST *update_table_list,
			 Item **conds, uint order_num, ORDER *order);
bk@work.mysql.com's avatar
bk@work.mysql.com committed
552
int mysql_update(THD *thd,TABLE_LIST *tables,List<Item> &fields,
553
		 List<Item> &values,COND *conds,
554
                 uint order_num, ORDER *order, ha_rows limit,
555
		 enum enum_duplicates handle_duplicates);
556 557 558
int mysql_multi_update(THD *thd, TABLE_LIST *table_list,
		       List<Item> *fields, List<Item> *values,
		       COND *conds, ulong options,
monty@mashka.mysql.fi's avatar
monty@mashka.mysql.fi committed
559 560
		       enum enum_duplicates handle_duplicates,
		       SELECT_LEX_UNIT *unit, SELECT_LEX *select_lex);
bell@sanja.is.com.ua's avatar
bell@sanja.is.com.ua committed
561 562 563 564 565
int mysql_prepare_insert(THD *thd, TABLE_LIST *table_list,
			 TABLE_LIST *insert_table_list, TABLE *table,
			 List<Item> &fields, List_item *values,
			 List<Item> &update_fields,
			 List<Item> &update_values, enum_duplicates duplic);
bk@work.mysql.com's avatar
bk@work.mysql.com committed
566
int mysql_insert(THD *thd,TABLE_LIST *table,List<Item> &fields,
567 568
		 List<List_item> &values, List<Item> &update_fields,
		 List<Item> &update_values, enum_duplicates flag);
bell@sanja.is.com.ua's avatar
bell@sanja.is.com.ua committed
569
int mysql_prepare_delete(THD *thd, TABLE_LIST *table_list, Item **conds);
570
int mysql_delete(THD *thd, TABLE_LIST *table, COND *conds, SQL_LIST *order,
571
                 ha_rows rows, ulong options);
572
int mysql_truncate(THD *thd, TABLE_LIST *table_list, bool dont_send_ok=0);
bk@work.mysql.com's avatar
bk@work.mysql.com committed
573 574 575
TABLE *open_ltable(THD *thd, TABLE_LIST *table_list, thr_lock_type update);
TABLE *open_table(THD *thd,const char *db,const char *table,const char *alias,
		  bool *refresh);
576
TABLE *reopen_name_locked_table(THD* thd, TABLE_LIST* table);
bk@work.mysql.com's avatar
bk@work.mysql.com committed
577 578 579
TABLE *find_locked_table(THD *thd, const char *db,const char *table_name);
bool reopen_table(TABLE *table,bool locked=0);
bool reopen_tables(THD *thd,bool get_locks,bool in_refresh);
580 581
void close_old_data_files(THD *thd, TABLE *table, bool abort_locks,
			  bool send_refresh);
bk@work.mysql.com's avatar
bk@work.mysql.com committed
582 583
bool close_data_tables(THD *thd,const char *db, const char *table_name);
bool wait_for_tables(THD *thd);
584
bool table_is_used(TABLE *table, bool wait_for_name_lock);
bk@work.mysql.com's avatar
bk@work.mysql.com committed
585 586
bool drop_locked_tables(THD *thd,const char *db, const char *table_name);
void abort_locked_tables(THD *thd,const char *db, const char *table_name);
587 588
void execute_init_command(THD *thd, sys_var_str *init_command_var,
			  rw_lock_t *var_mutex);
589
extern const Field *not_found_field;
590
Field *find_field_in_tables(THD *thd, Item_ident *item, TABLE_LIST *tables,
591
			    TABLE_LIST **where, bool report_error);
bk@work.mysql.com's avatar
bk@work.mysql.com committed
592
Field *find_field_in_table(THD *thd,TABLE *table,const char *name,uint length,
593
                           bool check_grant,bool allow_rowid,
594
                           uint *cached_field_index_ptr);
595
#ifdef HAVE_OPENSSL
596
#include <openssl/des.h>
597 598
struct st_des_keyblock
{
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
599
  DES_cblock key1, key2, key3;
600 601 602
};
struct st_des_keyschedule
{
603
  DES_key_schedule ks1, ks2, ks3;
604
};
605
extern char *des_key_file;
606
extern struct st_des_keyschedule des_keyschedule[10];
607
extern uint des_default_key;
608 609
extern pthread_mutex_t LOCK_des_key_file;
bool load_des_key_file(const char *file_name);
monty@mashka.mysql.fi's avatar
monty@mashka.mysql.fi committed
610
void free_des_key_file();
611
#endif /* HAVE_OPENSSL */
bk@work.mysql.com's avatar
bk@work.mysql.com committed
612

monty@hundin.mysql.fi's avatar
monty@hundin.mysql.fi committed
613 614 615
/* sql_do.cc */
int mysql_do(THD *thd, List<Item> &values);

venu@myvenu.com's avatar
venu@myvenu.com committed
616
/* sql_show.cc */
bk@work.mysql.com's avatar
bk@work.mysql.com committed
617
int mysqld_show_dbs(THD *thd,const char *wild);
618
int mysqld_show_open_tables(THD *thd,const char *wild);
bk@work.mysql.com's avatar
bk@work.mysql.com committed
619 620
int mysqld_show_tables(THD *thd,const char *db,const char *wild);
int mysqld_extend_show_tables(THD *thd,const char *db,const char *wild);
monty@donna.mysql.com's avatar
monty@donna.mysql.com committed
621 622
int mysqld_show_fields(THD *thd,TABLE_LIST *table, const char *wild,
		       bool verbose);
bk@work.mysql.com's avatar
bk@work.mysql.com committed
623
int mysqld_show_keys(THD *thd, TABLE_LIST *table);
tim@cane.mysql.fi's avatar
tim@cane.mysql.fi committed
624
int mysqld_show_logs(THD *thd);
625 626
void append_identifier(THD *thd, String *packet, const char *name,
		       uint length);
bk@work.mysql.com's avatar
bk@work.mysql.com committed
627 628 629
void mysqld_list_fields(THD *thd,TABLE_LIST *table, const char *wild);
int mysqld_dump_create_info(THD *thd, TABLE *table, int fd = -1);
int mysqld_show_create(THD *thd, TABLE_LIST *table_list);
630
int mysqld_show_create_db(THD *thd, char *dbname, HA_CREATE_INFO *create);
bk@work.mysql.com's avatar
bk@work.mysql.com committed
631 632 633 634

void mysqld_list_processes(THD *thd,const char *user,bool verbose);
int mysqld_show_status(THD *thd);
int mysqld_show_variables(THD *thd,const char *wild);
635
int mysqld_show(THD *thd, const char *wild, show_var_st *variables,
636 637
		enum enum_var_type value_type,
		pthread_mutex_t *mutex);
638
int mysqld_show_charsets(THD *thd,const char *wild);
639
int mysqld_show_collations(THD *thd,const char *wild);
640
int mysqld_show_storage_engines(THD *thd);
641 642
int mysqld_show_privileges(THD *thd);
int mysqld_show_column_types(THD *thd);
643
int mysqld_help (THD *thd, const char *text);
644 645

/* sql_prepare.cc */
646 647
int mysql_stmt_prepare(THD *thd, char *packet, uint packet_length, 
                       LEX_STRING *name=NULL);
648
void mysql_stmt_execute(THD *thd, char *packet, uint packet_length);
649
void mysql_sql_stmt_execute(THD *thd, LEX_STRING *stmt_name);
650
void mysql_stmt_free(THD *thd, char *packet);
651
void mysql_stmt_reset(THD *thd, char *packet);
652
void mysql_stmt_get_longdata(THD *thd, char *pos, ulong packet_length);
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
653 654
int check_insert_fields(THD *thd,TABLE *table,List<Item> &fields,
			List<Item> &values, ulong counter);
655 656

/* sql_error.cc */
657 658
MYSQL_ERROR *push_warning(THD *thd, MYSQL_ERROR::enum_warning_level level, uint code,
                          const char *msg);
659 660
void push_warning_printf(THD *thd, MYSQL_ERROR::enum_warning_level level,
			 uint code, const char *format, ...);
661
void mysql_reset_errors(THD *thd);
662
my_bool mysqld_show_warnings(THD *thd, ulong levels_to_show);
bk@work.mysql.com's avatar
bk@work.mysql.com committed
663

664 665
/* sql_handler.cc */
int mysql_ha_open(THD *thd, TABLE_LIST *tables);
666 667 668
int mysql_ha_close(THD *thd, TABLE_LIST *tables,
                   bool dont_send_ok=0, bool dont_lock=0, bool no_alias=0);
int mysql_ha_close_list(THD *thd, TABLE_LIST *tables, bool flushed=0);
serg@serg.mysql.com's avatar
serg@serg.mysql.com committed
669 670
int mysql_ha_read(THD *, TABLE_LIST *,enum enum_ha_read_modes,char *,
               List<Item> *,enum ha_rkey_function,Item *,ha_rows,ha_rows);
671

bk@work.mysql.com's avatar
bk@work.mysql.com committed
672 673
/* sql_base.cc */
void set_item_name(Item *item,char *pos,uint length);
monty@mashka.mysql.fi's avatar
monty@mashka.mysql.fi committed
674
bool add_field_to_list(THD *thd, char *field_name, enum enum_field_types type,
bk@work.mysql.com's avatar
bk@work.mysql.com committed
675
		       char *length, char *decimal,
676
		       uint type_modifier,
677
		       Item *default_value, Item *on_update_value,
bar@bar.mysql.r18.ru's avatar
bar@bar.mysql.r18.ru committed
678
		       LEX_STRING *comment,
679 680
		       char *change, TYPELIB *interval,CHARSET_INFO *cs,
		       uint uint_geom_type);
bk@work.mysql.com's avatar
bk@work.mysql.com committed
681
void store_position_for_column(const char *name);
monty@mashka.mysql.fi's avatar
monty@mashka.mysql.fi committed
682
bool add_to_list(THD *thd, SQL_LIST &list,Item *group,bool asc=0);
bk@work.mysql.com's avatar
bk@work.mysql.com committed
683 684
void add_join_on(TABLE_LIST *b,Item *expr);
void add_join_natural(TABLE_LIST *a,TABLE_LIST *b);
685
bool add_proc_to_list(THD *thd, Item *item);
bk@work.mysql.com's avatar
bk@work.mysql.com committed
686 687 688 689
TABLE *unlink_open_table(THD *thd,TABLE *list,TABLE *find);

SQL_SELECT *make_select(TABLE *head, table_map const_tables,
			table_map read_tables, COND *conds, int *error);
690 691 692
enum find_item_error_report_type {REPORT_ALL_ERRORS, REPORT_EXCEPT_NOT_FOUND,
				  IGNORE_ERRORS};
extern const Item **not_found_item;
693
Item ** find_item_in_list(Item *item, List<Item> &items, uint *counter,
694
			  find_item_error_report_type report_error);
695
bool get_key_map_from_key_list(key_map *map, TABLE *table,
696
                               List<String> *index_list);
697
bool insert_fields(THD *thd,TABLE_LIST *tables,
698 699
		   const char *db_name, const char *table_name,
		   List_iterator<Item> *it);
700
bool setup_tables(TABLE_LIST *tables);
701 702 703
int setup_wild(THD *thd, TABLE_LIST *tables, List<Item> &fields,
	       List<Item> *sum_func_list, uint wild_num);
int setup_fields(THD *thd, Item** ref_pointer_array, TABLE_LIST *tables,
704
		 List<Item> &item, bool set_query_id,
705
		 List<Item> *sum_func_list, bool allow_sum_func);
bk@work.mysql.com's avatar
bk@work.mysql.com committed
706
int setup_conds(THD *thd,TABLE_LIST *tables,COND **conds);
707 708
int setup_ftfuncs(SELECT_LEX* select);
int init_ftfuncs(THD *thd, SELECT_LEX* select, bool no_order);
bk@work.mysql.com's avatar
bk@work.mysql.com committed
709
void wait_for_refresh(THD *thd);
710
int open_tables(THD *thd, TABLE_LIST *tables, uint *counter);
711
int simple_open_n_lock_tables(THD *thd,TABLE_LIST *tables);
bk@work.mysql.com's avatar
bk@work.mysql.com committed
712
int open_and_lock_tables(THD *thd,TABLE_LIST *tables);
713
int lock_tables(THD *thd, TABLE_LIST *tables, uint counter);
bk@work.mysql.com's avatar
bk@work.mysql.com committed
714 715 716 717 718
TABLE *open_temporary_table(THD *thd, const char *path, const char *db,
			    const char *table_name, bool link_in_list);
bool rm_temporary_table(enum db_type base, char *path);
void free_io_cache(TABLE *entry);
void intern_close_table(TABLE *entry);
719
bool close_thread_table(THD *thd, TABLE **table_ptr);
bk@work.mysql.com's avatar
bk@work.mysql.com committed
720
void close_temporary_tables(THD *thd);
721 722
TABLE_LIST * find_table_in_list(TABLE_LIST *table,
				const char *db_name, const char *table_name);
723 724 725
TABLE_LIST * find_real_table_in_list(TABLE_LIST *table,
				     const char *db_name,
				     const char *table_name);
bk@work.mysql.com's avatar
bk@work.mysql.com committed
726 727 728
TABLE **find_temporary_table(THD *thd, const char *db, const char *table_name);
bool close_temporary_table(THD *thd, const char *db, const char *table_name);
void close_temporary(TABLE *table, bool delete_table=1);
729
bool rename_temporary_table(THD* thd, TABLE *table, const char *new_db,
bk@work.mysql.com's avatar
bk@work.mysql.com committed
730 731 732
			    const char *table_name);
void remove_db_from_cache(const my_string db);
void flush_tables();
733 734
bool remove_table_from_cache(THD *thd, const char *db, const char *table,
			     bool return_if_owned_by_thd=0);
735
bool close_cached_tables(THD *thd, bool wait_for_refresh, TABLE_LIST *tables);
bk@work.mysql.com's avatar
bk@work.mysql.com committed
736
void copy_field_from_tmp_record(Field *field,int offset);
737 738
int fill_record(List<Item> &fields,List<Item> &values, bool ignore_errors);
int fill_record(Field **field,List<Item> &values, bool ignore_errors);
739
OPEN_TABLE_LIST *list_open_tables(THD *thd, const char *wild);
bk@work.mysql.com's avatar
bk@work.mysql.com committed
740 741 742 743 744 745 746 747 748

/* sql_calc.cc */
bool eval_const_cond(COND *cond);

/* sql_load.cc */
int mysql_load(THD *thd,sql_exchange *ex, TABLE_LIST *table_list,
	       List<Item> &fields, enum enum_duplicates handle_duplicates,
	       bool local_file,thr_lock_type lock_type);
int write_record(TABLE *table,COPY_INFO *info);
749 750 751 752

/* sql_manager.cc */
/* bits set in manager_status */
#define MANAGER_BERKELEY_LOG_CLEANUP    (1L << 0)
753
extern ulong volatile manager_status;
754
extern bool volatile manager_thread_in_use, mqh_used;
755
extern pthread_t manager_thread;
756
extern "C" pthread_handler_decl(handle_manager, arg);
757

bk@work.mysql.com's avatar
bk@work.mysql.com committed
758 759 760 761
/* sql_test.cc */
#ifndef DBUG_OFF
void print_where(COND *cond,const char *info);
void print_cached_tables(void);
762
void TEST_filesort(SORT_FIELD *sortorder,uint s_length);
bk@work.mysql.com's avatar
bk@work.mysql.com committed
763 764 765 766 767 768
#endif
void mysql_print_status(THD *thd);
/* key.cc */
int find_ref_key(TABLE *form,Field *field, uint *offset);
void key_copy(byte *key,TABLE *form,uint index,uint key_length);
void key_restore(TABLE *form,byte *key,uint index,uint key_length);
769
bool key_cmp_if_same(TABLE *form,const byte *key,uint index,uint key_length);
bk@work.mysql.com's avatar
bk@work.mysql.com committed
770 771
void key_unpack(String *to,TABLE *form,uint index);
bool check_if_key_used(TABLE *table, uint idx, List<Item> &fields);
772
int key_cmp(KEY_PART_INFO *key_part, const byte *key, uint key_length);
bk@work.mysql.com's avatar
bk@work.mysql.com committed
773

774
bool init_errmessage(void);
bk@work.mysql.com's avatar
bk@work.mysql.com committed
775 776 777
void sql_perror(const char *message);
void sql_print_error(const char *format,...)
	        __attribute__ ((format (printf, 1, 2)));
778 779
bool fn_format_relative_to_data_home(my_string to, const char *name,
				     const char *dir, const char *extension);
780 781 782
bool open_log(MYSQL_LOG *log, const char *hostname,
	      const char *opt_name, const char *extension,
	      const char *index_file_name,
783 784
	      enum_log_type type, bool read_append,
	      bool no_auto_events, ulong max_size);
bk@work.mysql.com's avatar
bk@work.mysql.com committed
785

786 787 788
/* mysqld.cc */
extern void yyerror(const char*);

789 790 791
/* item_func.cc */
extern bool check_reserved_words(LEX_STRING *name);

792 793 794 795 796 797 798
/* strfunc.cc */
ulonglong find_set(TYPELIB *typelib,const char *x, uint length,
		   char **err_pos, uint *err_len, bool *set_warning);
uint find_type(TYPELIB *lib, const char *find, uint length, bool part_match);
uint check_word(TYPELIB *lib, const char *val, const char *end,
		const char **end_of_word);

799 800
bool is_keyword(const char *name, uint len);

hf@deer.(none)'s avatar
hf@deer.(none) committed
801

802 803
#define MY_DB_OPT_FILE "db.opt"
bool load_db_opt(THD *thd, const char *path, HA_CREATE_INFO *create);
hf@deer.(none)'s avatar
hf@deer.(none) committed
804

805 806 807 808 809
/*
  External variables
*/

extern time_t start_time;
810
extern char *mysql_data_home,server_version[SERVER_VERSION_LENGTH],
811
	    mysql_real_data_home[], *opt_mysql_tmpdir, mysql_charsets_dir[],
812
            def_ft_boolean_syntax[sizeof(ft_boolean_syntax)];
813 814
#define mysql_tmpdir (my_tmpdir(&mysql_tmpdir_list))
extern MY_TMPDIR mysql_tmpdir_list;
815
extern const char *command_name[];
hf@deer.(none)'s avatar
hf@deer.(none) committed
816
extern const char *first_keyword, *my_localhost, *delayed_user, *binary_keyword;
817 818
extern const char **errmesg;			/* Error messages */
extern const char *myisam_recover_options_str;
819
extern const char *in_left_expr_name, *in_additional_cond;
bell@sanja.is.com.ua's avatar
bell@sanja.is.com.ua committed
820 821 822 823 824 825
extern Eq_creator eq_creator;
extern Ne_creator ne_creator;
extern Gt_creator gt_creator;
extern Lt_creator lt_creator;
extern Ge_creator ge_creator;
extern Le_creator le_creator;
826 827 828
extern uchar *days_in_month;
extern char language[LIBLEN],reg_ext[FN_EXTLEN];
extern char glob_hostname[FN_REFLEN], mysql_home[FN_REFLEN];
829
extern char pidfile_name[FN_REFLEN], system_time_zone[30], *opt_init_file;
830
extern char log_error_file[FN_REFLEN];
831
extern double log_10[32];
832
extern ulonglong log_10_int[20];
833
extern ulonglong keybuff_size;
834
extern ulong refresh_version,flush_version, thread_id,query_id,opened_tables;
835
extern ulong created_tmp_tables, created_tmp_disk_tables, bytes_sent;
836
extern ulong binlog_cache_use, binlog_cache_disk_use;
837 838 839 840 841
extern ulong aborted_threads,aborted_connects;
extern ulong delayed_insert_timeout;
extern ulong delayed_insert_limit, delayed_queue_size;
extern ulong delayed_insert_threads, delayed_insert_writes;
extern ulong delayed_rows_in_use,delayed_insert_errors;
842
extern ulong filesort_rows, filesort_range_count, filesort_scan_count;
843
extern ulong filesort_merge_passes;
844
extern ulong select_range_check_count, select_range_count, select_scan_count;
845
extern ulong select_full_range_join_count,select_full_join_count;
846 847
extern ulong slave_open_temp_tables;
extern ulong query_cache_size, query_cache_min_res_unit;
bk@work.mysql.com's avatar
bk@work.mysql.com committed
848
extern ulong thd_startup_options, slow_launch_threads, slow_launch_time;
849
extern ulong server_id, concurrency;
850 851 852
extern ulong ha_read_count, ha_write_count, ha_delete_count, ha_update_count;
extern ulong ha_read_key_count, ha_read_next_count, ha_read_prev_count;
extern ulong ha_read_first_count, ha_read_last_count;
853
extern ulong ha_read_rnd_count, ha_read_rnd_next_count, ha_discover_count;
854
extern ulong ha_commit_count, ha_rollback_count,table_cache_size;
855
extern ulong max_connections,max_connect_errors, connect_timeout;
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
856
extern ulong slave_net_timeout;
857
extern ulong max_user_connections;
858
extern ulong long_query_count, what_to_log,flush_time;
859 860
extern ulong query_buff_size, thread_stack,thread_stack_min;
extern ulong binlog_cache_size, max_binlog_cache_size, open_files_limit;
861 862
extern ulong max_binlog_size, max_relay_log_size;
extern ulong rpl_recovery_rank, thread_cache_size;
863 864
extern ulong com_stat[(uint) SQLCOM_END], com_other, back_log;
extern ulong specialflag, current_pid;
865
extern ulong expire_logs_days, sync_binlog_period, sync_binlog_counter;
866
extern my_bool relay_log_purge, opt_innodb_safe_binlog;
867
extern uint test_flags,select_errors,ha_open_options;
868
extern uint protocol_version, mysqld_port, dropping_tables;
869
extern uint delay_key_write_options, lower_case_table_names;
870
extern bool opt_endinfo, using_udf_functions, locked_in_memory;
871
extern bool opt_using_transactions, mysql_embedded;
872
extern bool using_update_log, opt_large_files, server_id_supplied;
873
extern bool opt_log, opt_update_log, opt_bin_log, opt_slow_log, opt_error_log;
874
extern bool opt_disable_networking, opt_skip_show_db;
875 876
extern bool volatile abort_loop, shutdown_in_progress, grant_option;
extern uint volatile thread_count, thread_running, global_read_lock;
877
extern my_bool opt_sql_bin_update, opt_safe_user_create, opt_no_mix_types;
878
extern my_bool opt_safe_show_db, opt_local_infile;
879
extern my_bool opt_slave_compressed_protocol, use_temp_pool;
880
extern my_bool opt_readonly, lower_case_file_system;
881
extern my_bool opt_enable_named_pipe, opt_sync_frm;
882
extern my_bool opt_secure_auth;
guilhem@mysql.com's avatar
guilhem@mysql.com committed
883
extern uint opt_crash_binlog_innodb;
884
extern char *shared_memory_base_name, *mysqld_unix_port;
885
extern bool opt_enable_shared_memory;
886
extern char *default_tz_name;
887

bk@work.mysql.com's avatar
bk@work.mysql.com committed
888
extern MYSQL_LOG mysql_log,mysql_update_log,mysql_slow_log,mysql_bin_log;
889
extern FILE *bootstrap_file;
bk@work.mysql.com's avatar
bk@work.mysql.com committed
890 891 892
extern pthread_key(MEM_ROOT*,THR_MALLOC);
extern pthread_mutex_t LOCK_mysql_create_db,LOCK_Acl,LOCK_open,
       LOCK_thread_count,LOCK_mapped_file,LOCK_user_locks, LOCK_status,
893
       LOCK_error_log, LOCK_delayed_insert, LOCK_uuid_generator,
bk@work.mysql.com's avatar
bk@work.mysql.com committed
894
       LOCK_delayed_status, LOCK_delayed_create, LOCK_crypt, LOCK_timezone,
895
       LOCK_slave_list, LOCK_active_mi, LOCK_manager,
896
       LOCK_global_system_variables, LOCK_user_conn;
gluh@gluh.mysql.r18.ru's avatar
gluh@gluh.mysql.r18.ru committed
897
extern rw_lock_t LOCK_grant, LOCK_sys_init_connect, LOCK_sys_init_slave;
898
extern pthread_cond_t COND_refresh, COND_thread_count, COND_manager;
bk@work.mysql.com's avatar
bk@work.mysql.com committed
899
extern pthread_attr_t connection_attrib;
900
extern I_List<THD> threads;
901
extern I_List<NAMED_LIST> key_caches;
902
extern MY_BITMAP temp_pool;
hf@deer.(none)'s avatar
SCRUM  
hf@deer.(none) committed
903
extern String my_empty_string;
904
extern const String my_null_string;
905
extern SHOW_VAR init_vars[],status_vars[], internal_vars[];
906 907 908
extern SHOW_COMP_OPTION have_isam;
extern SHOW_COMP_OPTION have_innodb;
extern SHOW_COMP_OPTION have_berkeley_db;
909
extern SHOW_COMP_OPTION have_ndbcluster;
910
extern struct system_variables global_system_variables;
911
extern struct system_variables max_system_variables;
912
extern struct rand_struct sql_rand;
913
extern KEY_CACHE *sql_key_cache;
914

915 916
extern const char *opt_date_time_formats[];
extern KNOWN_DATE_TIME_FORMAT known_date_time_formats[];
917

918
extern String null_string;
919 920 921 922 923
extern HASH open_cache;
extern TABLE *unused_tables;
extern I_List<i_string> binlog_do_db, binlog_ignore_db;
extern const char* any_db;
extern struct my_option my_long_options[];
924

925 926
/* optional things, have_* variables */

927 928
extern SHOW_COMP_OPTION have_isam, have_innodb, have_berkeley_db;
extern SHOW_COMP_OPTION have_example_db, have_archive_db;
929
extern SHOW_COMP_OPTION have_raid, have_openssl, have_symlink;
930
extern SHOW_COMP_OPTION have_query_cache, have_berkeley_db, have_innodb;
931
extern SHOW_COMP_OPTION have_geometry, have_rtree_keys;
monty@mashka.mysql.fi's avatar
monty@mashka.mysql.fi committed
932
extern SHOW_COMP_OPTION have_crypt;
933
extern SHOW_COMP_OPTION have_compress;
934

bk@work.mysql.com's avatar
bk@work.mysql.com committed
935 936 937 938
#ifndef __WIN__
extern pthread_t signal_thread;
#endif

939 940 941 942
#ifdef HAVE_OPENSSL
extern struct st_VioSSLAcceptorFd * ssl_acceptor_fd;
#endif /* HAVE_OPENSSL */

bk@work.mysql.com's avatar
bk@work.mysql.com committed
943 944 945 946 947 948
MYSQL_LOCK *mysql_lock_tables(THD *thd,TABLE **table,uint count);
void mysql_unlock_tables(THD *thd, MYSQL_LOCK *sql_lock);
void mysql_unlock_read_tables(THD *thd, MYSQL_LOCK *sql_lock);
void mysql_unlock_some_tables(THD *thd, TABLE **table,uint count);
void mysql_lock_remove(THD *thd, MYSQL_LOCK *locked,TABLE *table);
void mysql_lock_abort(THD *thd, TABLE *table);
949
void mysql_lock_abort_for_thread(THD *thd, TABLE *table);
bk@work.mysql.com's avatar
bk@work.mysql.com committed
950
MYSQL_LOCK *mysql_lock_merge(MYSQL_LOCK *a,MYSQL_LOCK *b);
951 952 953 954
bool lock_global_read_lock(THD *thd);
void unlock_global_read_lock(THD *thd);
bool wait_if_global_read_lock(THD *thd, bool abort_on_refresh);
void start_waiting_global_read_lock(THD *thd);
bk@work.mysql.com's avatar
bk@work.mysql.com committed
955

956
/* Lock based on name */
957
int lock_and_wait_for_table_name(THD *thd, TABLE_LIST *table_list);
958 959 960
int lock_table_name(THD *thd, TABLE_LIST *table_list);
void unlock_table_name(THD *thd, TABLE_LIST *table_list);
bool wait_for_locked_table_names(THD *thd, TABLE_LIST *table_list);
961 962 963
bool lock_table_names(THD *thd, TABLE_LIST *table_list);
void unlock_table_names(THD *thd, TABLE_LIST *table_list,
			TABLE_LIST *last_table= 0);
964

bk@work.mysql.com's avatar
bk@work.mysql.com committed
965 966 967 968

/* old unireg functions */

void unireg_init(ulong options);
969
void unireg_end(void);
970 971 972 973
bool mysql_create_frm(THD *thd, my_string file_name,
		      HA_CREATE_INFO *create_info,
		      List<create_field> &create_field,
		      uint key_count,KEY *key_info,handler *db_type);
974
int rea_create_table(THD *thd, my_string file_name,HA_CREATE_INFO *create_info,
bk@work.mysql.com's avatar
bk@work.mysql.com committed
975 976 977 978 979
		     List<create_field> &create_field,
		     uint key_count,KEY *key_info);
int format_number(uint inputflag,uint max_length,my_string pos,uint length,
		  my_string *errpos);
int openfrm(const char *name,const char *alias,uint filestat,uint prgflag,
980
	    uint ha_open_flags, TABLE *outparam);
981 982 983 984
int readfrm(const char *name, const void** data, uint* length);
int writefrm(const char* name, const void* data, uint len);
int create_table_from_handler(const char *db, const char *name,
			      bool create_if_found);
bk@work.mysql.com's avatar
bk@work.mysql.com committed
985 986 987 988 989 990 991 992 993 994 995 996
int closefrm(TABLE *table);
db_type get_table_type(const char *name);
int read_string(File file, gptr *to, uint length);
void free_blobs(TABLE *table);
int set_zone(int nr,int min_zone,int max_zone);
ulong convert_period_to_month(ulong period);
ulong convert_month_to_period(ulong month);
long calc_daynr(uint year,uint month,uint day);
uint calc_days_in_year(uint year);
void get_date_from_daynr(long daynr,uint *year, uint *month,
			 uint *day);
void init_time(void);
997 998 999
my_time_t my_system_gmt_sec(const TIME *, long *current_timezone, bool *not_exist);
my_time_t TIME_to_timestamp(THD *thd, const TIME *t, bool *not_exist);
bool str_to_time_with_warn(const char *str,uint length,TIME *l_time);
1000 1001
timestamp_type str_to_datetime_with_warn(const char *str, uint length,
                                         TIME *l_time, uint flags);
1002 1003
longlong number_to_TIME(longlong nr, TIME *time_res, bool fuzzy_date,
                        int *was_cut);
1004
void localtime_to_TIME(TIME *to, struct tm *from);
gluh@gluh.mysql.r18.ru's avatar
gluh@gluh.mysql.r18.ru committed
1005
void calc_time_from_sec(TIME *to, long seconds, long microseconds);
bk@work.mysql.com's avatar
bk@work.mysql.com committed
1006

1007 1008
void make_truncated_value_warning(THD *thd, const char *str_val,
				  uint str_length, timestamp_type time_type);
1009 1010 1011 1012 1013 1014 1015 1016 1017
extern DATE_TIME_FORMAT *date_time_format_make(timestamp_type format_type,
					       const char *format_str,
					       uint format_length);
extern DATE_TIME_FORMAT *date_time_format_copy(THD *thd,
					       DATE_TIME_FORMAT *format);
const char *get_date_time_format_str(KNOWN_DATE_TIME_FORMAT *format,
				     timestamp_type type);
extern bool make_date_time(DATE_TIME_FORMAT *format, TIME *l_time,
			   timestamp_type type, String *str);
1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028
void make_datetime(const DATE_TIME_FORMAT *format, const TIME *l_time,
                   String *str);
void make_date(const DATE_TIME_FORMAT *format, const TIME *l_time,
               String *str);
void make_time(const DATE_TIME_FORMAT *format, const TIME *l_time,
               String *str);
void TIME_to_string(const TIME *time, String *str);
ulonglong TIME_to_ulonglong_datetime(const TIME *time);
ulonglong TIME_to_ulonglong_date(const TIME *time);
ulonglong TIME_to_ulonglong_time(const TIME *time);
ulonglong TIME_to_ulonglong(const TIME *time);
1029

bk@work.mysql.com's avatar
bk@work.mysql.com committed
1030 1031 1032 1033
int test_if_number(char *str,int *res,bool allow_wildcards);
void change_byte(byte *,uint,char,char);
void init_read_record(READ_RECORD *info, THD *thd, TABLE *reg_form,
		      SQL_SELECT *select,
1034
		      int use_record_cache, bool print_errors);
bk@work.mysql.com's avatar
bk@work.mysql.com committed
1035
void end_read_record(READ_RECORD *info);
1036 1037 1038
ha_rows filesort(THD *thd, TABLE *form,struct st_sort_field *sortorder,
		 uint s_length, SQL_SELECT *select,
		 ha_rows max_rows, ha_rows *examined_rows);
1039
void filesort_free_buffers(TABLE *table);
bk@work.mysql.com's avatar
bk@work.mysql.com committed
1040 1041 1042
void change_double_for_sort(double nr,byte *to);
int get_quick_record(SQL_SELECT *select);
int calc_weekday(long daynr,bool sunday_first_day_of_week);
1043
uint calc_week(TIME *l_time, uint week_behaviour, uint *year);
bk@work.mysql.com's avatar
bk@work.mysql.com committed
1044 1045 1046 1047 1048 1049 1050
void find_date(char *pos,uint *vek,uint flag);
TYPELIB *convert_strings_to_array_type(my_string *typelibs, my_string *end);
TYPELIB *typelib(List<String> &strings);
ulong get_form_pos(File file, uchar *head, TYPELIB *save_names);
ulong make_new_entry(File file,uchar *fileinfo,TYPELIB *formnames,
		     const char *newname);
ulong next_io_size(ulong pos);
1051
void append_unescaped(String *res, const char *pos, uint length);
bk@work.mysql.com's avatar
bk@work.mysql.com committed
1052 1053 1054 1055
int create_frm(char *name,uint reclength,uchar *fileinfo,
	       HA_CREATE_INFO *create_info, uint keys);
void update_create_info_from_table(HA_CREATE_INFO *info, TABLE *form);
int rename_file_ext(const char * from,const char * to,const char * ext);
1056
bool check_db_name(char *db);
bk@work.mysql.com's avatar
bk@work.mysql.com committed
1057 1058
bool check_column_name(const char *name);
bool check_table_name(const char *name, uint length);
1059
char *get_field(MEM_ROOT *mem, Field *field);
vva@eagle.mysql.r18.ru's avatar
vva@eagle.mysql.r18.ru committed
1060
bool get_field(MEM_ROOT *mem, Field *field, class String *res);
1061
int wild_case_compare(CHARSET_INFO *cs, const char *str,const char *wildstr);
1062

bk@work.mysql.com's avatar
bk@work.mysql.com committed
1063 1064 1065 1066 1067 1068 1069 1070
/* from hostname.cc */
struct in_addr;
my_string ip_to_hostname(struct in_addr *in,uint *errors);
void inc_host_errors(struct in_addr *in);
void reset_host_errors(struct in_addr *in);
bool hostname_cache_init();
void hostname_cache_free();
void hostname_cache_refresh(void);
1071

1072
/* sql_cache.cc */
bk@work.mysql.com's avatar
bk@work.mysql.com committed
1073 1074 1075 1076
extern bool sql_cache_init();
extern void sql_cache_free();
extern int sql_cache_hit(THD *thd, char *inBuf, uint length);

1077
/* item.cc */
1078 1079 1080 1081
Item *get_system_var(THD *thd, enum_var_type var_type, LEX_STRING name,
		     LEX_STRING component);
Item *get_system_var(THD *thd, enum_var_type var_type, const char *var_name,
		     uint length, const char *item_name);
1082 1083 1084
/* item_func.cc */
int get_var_with_binlog(THD *thd, LEX_STRING &name,
                        user_var_entry **out_entry);
1085 1086
/* log.cc */
bool flush_error_log(void);
1087

1088 1089 1090 1091
/* sql_list.cc */
void free_list(I_List <i_string_pair> *list);
void free_list(I_List <i_string> *list);

1092 1093 1094 1095 1096 1097 1098 1099
/* sql_yacc.cc */
extern int yyparse(void *thd);

/* frm_crypt.cc */
#ifdef HAVE_CRYPTED_FRM
SQL_CRYPT *get_crypt_for_frm(void);
#endif

bk@work.mysql.com's avatar
bk@work.mysql.com committed
1100 1101
/* Some inline functions for more speed */

monty@mashka.mysql.fi's avatar
monty@mashka.mysql.fi committed
1102
inline bool add_item_to_list(THD *thd, Item *item)
bk@work.mysql.com's avatar
bk@work.mysql.com committed
1103
{
1104
  return thd->lex->current_select->add_item_to_list(thd, item);
bk@work.mysql.com's avatar
bk@work.mysql.com committed
1105
}
monty@mashka.mysql.fi's avatar
monty@mashka.mysql.fi committed
1106 1107

inline bool add_value_to_list(THD *thd, Item *value)
bk@work.mysql.com's avatar
bk@work.mysql.com committed
1108
{
1109
  return thd->lex->value_list.push_back(value);
bk@work.mysql.com's avatar
bk@work.mysql.com committed
1110
}
monty@mashka.mysql.fi's avatar
monty@mashka.mysql.fi committed
1111 1112

inline bool add_order_to_list(THD *thd, Item *item, bool asc)
bk@work.mysql.com's avatar
bk@work.mysql.com committed
1113
{
1114
  return thd->lex->current_select->add_order_to_list(thd, item, asc);
bk@work.mysql.com's avatar
bk@work.mysql.com committed
1115
}
monty@mashka.mysql.fi's avatar
monty@mashka.mysql.fi committed
1116 1117

inline bool add_group_to_list(THD *thd, Item *item, bool asc)
bk@work.mysql.com's avatar
bk@work.mysql.com committed
1118
{
1119
  return thd->lex->current_select->add_group_to_list(thd, item, asc);
bk@work.mysql.com's avatar
bk@work.mysql.com committed
1120
}
monty@mashka.mysql.fi's avatar
monty@mashka.mysql.fi committed
1121

bk@work.mysql.com's avatar
bk@work.mysql.com committed
1122 1123 1124
inline void mark_as_null_row(TABLE *table)
{
  table->null_row=1;
1125
  table->status|=STATUS_NULL_ROW;
bk@work.mysql.com's avatar
bk@work.mysql.com committed
1126 1127
  bfill(table->null_flags,table->null_bytes,255);
}
bell@sanja.is.com.ua's avatar
bell@sanja.is.com.ua committed
1128

1129 1130 1131
inline void table_case_convert(char * name, uint length)
{
  if (lower_case_table_names)
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
1132 1133 1134
    my_casedn(files_charset_info, name, length);
}

1135 1136 1137 1138
inline const char *table_case_name(HA_CREATE_INFO *info, const char *name)
{
  return ((lower_case_table_names == 2 && info->alias) ? info->alias : name);
}
monty@mysql.com's avatar
monty@mysql.com committed
1139

1140 1141 1142 1143 1144 1145 1146 1147
inline ulong sql_rnd_with_mutex()
{
  pthread_mutex_lock(&LOCK_thread_count);
  ulong tmp=(ulong) (my_rnd(&sql_rand) * 0xffffffff); /* make all bits random */
  pthread_mutex_unlock(&LOCK_thread_count);
  return tmp;
}

bell@sanja.is.com.ua's avatar
bell@sanja.is.com.ua committed
1148 1149 1150 1151 1152 1153
Comp_creator *comp_eq_creator(bool invert);
Comp_creator *comp_ge_creator(bool invert);
Comp_creator *comp_gt_creator(bool invert);
Comp_creator *comp_le_creator(bool invert);
Comp_creator *comp_lt_creator(bool invert);
Comp_creator *comp_ne_creator(bool invert);
bell@sanja.is.com.ua's avatar
bell@sanja.is.com.ua committed
1154

1155 1156 1157 1158 1159
Item * all_any_subquery_creator(Item *left_expr,
				chooser_compare_func_creator cmp,
				bool all,
				SELECT_LEX *select_lex);

1160 1161 1162 1163 1164 1165 1166 1167 1168
/*
  clean/setup table fields and map

  SYNOPSYS
    setup_table_map()
    table - TABLE structure pointer (which should be setup)
    table_list TABLE_LIST structure pointer (owner of TABLE)
    tablenr - table number
*/
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
1169

1170 1171 1172 1173
inline void setup_table_map(TABLE *table, TABLE_LIST *table_list, uint tablenr)
{
  table->used_fields= 0;
  table->const_table= 0;
1174
  table->null_row= 0;
1175 1176 1177 1178 1179 1180 1181
  table->status= STATUS_NO_RECORD;
  table->keys_in_use_for_query= table->keys_in_use;
  table->maybe_null= test(table->outer_join= table_list->outer_join);
  table->tablenr= tablenr;
  table->map= (table_map) 1 << tablenr;
  table->force_index= table_list->force_index;
}
1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197


/*
  Some functions that are different in the embedded library and the normal
  server
*/

#ifndef EMBEDDED_LIBRARY
extern "C" void unireg_abort(int exit_code);
void kill_delayed_threads(void);
bool check_stack_overrun(THD *thd,char *dummy);
#else
#define unireg_abort(exit_code) DBUG_RETURN(exit_code)
inline void kill_delayed_threads(void) {}
#define check_stack_overrun(A, B) 0
#endif