sql_backup_lock.cc File Reference

#include "sql_backup_lock.h"
#include <utility>
#include "m_string.h"
#include "my_dbug.h"
#include "my_inttypes.h"
#include "my_sys.h"
#include "mysqld_error.h"
#include "sql/auth/sql_security_ctx.h"
#include "sql/mdl.h"
#include "sql/system_variables.h"
#include "sql_class.h"

Classes
class	Release_all_backup_locks
	MDL_release_locks_visitor subclass to release MDL for BACKUP_LOCK. More...

Functions
static bool	check_backup_admin_privilege (THD *thd)
	Check if a current user has the privilege BACKUP_ADMIN required to run the statement LOCK INSTANCE FOR BACKUP. More...
static bool	acquire_mdl_for_backup (THD *thd, enum_mdl_type mdl_type, enum_mdl_duration mdl_duration, ulong lock_wait_timeout)
	Acquire either exclusive or shared Backup Lock. More...
void	release_backup_lock (THD *thd)
	Release Backup Lock if it was acquired. More...
bool	acquire_exclusive_backup_lock (THD *thd, ulong lock_wait_timeout, bool for_trx)
bool	acquire_shared_backup_lock (THD *thd, ulong lock_wait_timeout, bool for_trx)

Function Documentation

acquire_exclusive_backup_lock()

bool acquire_exclusive_backup_lock	(	THD *	thd,
		ulong	lock_wait_timeout,
		bool	for_trx
	)

acquire_mdl_for_backup()

static bool acquire_mdl_for_backup ( THD *  thd, enum_mdl_type  mdl_type, enum_mdl_duration  mdl_duration, ulong  lock_wait_timeout  )

static

Acquire either exclusive or shared Backup Lock.

Parameters

[in]	thd	Current thread context
[in]	mdl_type	Type of metadata lock to acquire for backup
[in]	mdl_duration	Duration of metadata lock
[in]	lock_wait_timeout	How many seconds to wait before timeout.

Returns

Operation status.

Return values

false	Success
true	Failure

acquire_shared_backup_lock()

bool acquire_shared_backup_lock	(	THD *	thd,
		ulong	lock_wait_timeout,
		bool	for_trx
	)

check_backup_admin_privilege()

static bool check_backup_admin_privilege ( THD *  thd )

static

Check if a current user has the privilege BACKUP_ADMIN required to run the statement LOCK INSTANCE FOR BACKUP.

Parameters

thd	Current thread

Return values

false	A user has the privilege BACKUP_ADMIN
true	A user doesn't have the privilege BACKUP_ADMIN

release_backup_lock()

void release_backup_lock

(

THD *

thd

)

Release Backup Lock if it was acquired.

Parameters

[in]

thd

Current thread context