/* Copyright (C) 2006 MySQL AB & MySQL Finland AB & TCX DataKonsult AB
This program is free software ; you can redistribute it and / or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation ; version 2 of the License .
This program is distributed in the hope that it will be useful ,
but WITHOUT ANY WARRANTY ; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE . See the
GNU General Public License for more details .
You should have received a copy of the GNU General Public License
along with this program ; if not , write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335 USA */
/*
WL # 3234 Maria control file
First version written by Guilhem Bichot on 2006 - 04 - 27 .
*/
#ifndef _ma_control_file_h
#define _ma_control_file_h
C_MODE_START
#define CONTROL_FILE_BASE_NAME "aria_log_control"
/*
Major version for control file . Should only be changed when doing
big changes that made the new control file incompatible with all
older versions of Maria .
*/
#define CONTROL_FILE_VERSION 1
/* Here is the interface of this module */
/*
LSN of the last checkoint
( if last_checkpoint_lsn = = LSN_IMPOSSIBLE then there was never a checkpoint )
*/
extern volatile LSN last_checkpoint_lsn;
/*
Last log number ( if last_logno = = FILENO_IMPOSSIBLE then there is no log
file yet )
*/
extern uint32 last_logno;
extern TrID max_trid_in_control_file, max_long_trid;
extern uint8 recovery_failures;
extern my_bool maria_multi_threaded, maria_in_recovery;
typedef enum enum_control_file_error {
CONTROL_FILE_OK= 0 ,
CONTROL_FILE_TOO_SMALL,
CONTROL_FILE_TOO_BIG,
CONTROL_FILE_BAD_MAGIC_STRING,
CONTROL_FILE_BAD_VERSION,
CONTROL_FILE_BAD_CHECKSUM,
CONTROL_FILE_BAD_HEAD_CHECKSUM,
CONTROL_FILE_MISSING,
CONTROL_FILE_INCONSISTENT_INFORMATION,
CONTROL_FILE_WRONG_BLOCKSIZE,
CONTROL_FILE_LOCKED,
CONTROL_FILE_UNKNOWN_ERROR /* any other error */
} CONTROL_FILE_ERROR;
CONTROL_FILE_ERROR ma_control_file_open(my_bool create_if_missing,
my_bool print_error,
my_bool wait_for_lock,
int open_flags);
int ma_control_file_write_and_force(LSN last_checkpoint_lsn_arg,
uint32 last_logno_arg, TrID max_trid_arg,
uint8 recovery_failures_arg);
/* For simple programs that creates Aria files*/
CONTROL_FILE_ERROR ma_control_file_open_or_create();
int ma_control_file_end(void );
my_bool ma_control_file_inited(void );
my_bool print_aria_log_control(void );
C_MODE_END
#endif
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