log0encryption.cc File Reference

#include "log0encryption.h"
#include <cstring>
#include "dict0dict.h"
#include "fil0pages_persistence_interface.h"
#include "log0chkp.h"
#include "log0files_governor.h"
#include "log0files_io.h"
#include "log0handler_interface.h"
#include "log0sys.h"
#include "log0types.h"
#include "log0write.h"
#include "os0enc.h"
#include "srv0srv.h"
#include "ut0mutex.h"

Log - encryption.
using	Metadata_key = ib::redo::Metadata_key
using	Metadata_value = ib::redo::Handler_interface::Metadata_value
using	Status = ib::redo::Status
static Log_files_dict::Const_iterator	log_encryption_file (const log_t &log)
	Finds redo log file which has the current log encryption header. More...
dberr_t	log_encryption_read (log_t &log, Metadata_value &block)
	Reads the log encryption header to get the redo log encryption information. More...
dberr_t	log_read_encryption_info (log_t &log)
	Read the log encryption information from Redo Log Handler and update log.m_encryption_metadata and log.m_encryption_buf. More...
bool	log_file_header_fill_encryption (const Encryption_metadata &encryption_metadata, bool encrypt_key, byte *buf)
	Writes encryption information to log header. More...
bool	log_can_encrypt (const log_t &log)
dberr_t	log_encryption_update_and_write_header (log_t &log, const Metadata_value block)
	Update in-mem encryption information with the new information and also write this new information to encryption header. More...
dberr_t	log_encryption_generate_metadata ()
	Generate new encryption information for REDO log. More...

Typedef Documentation

Metadata_key

using Metadata_key = ib::redo::Metadata_key

Metadata_value

using Metadata_value = ib::redo::Handler_interface::Metadata_value

Status

using Status = ib::redo::Status

Function Documentation

log_can_encrypt()

bool log_can_encrypt

(

const log_t &

log

)

Returns

true iff redo log is encrypted (checks in-memory metadata in log_t).

log_encryption_file()

static Log_files_dict::Const_iterator log_encryption_file ( const log_t &  log )

static

Finds redo log file which has the current log encryption header.

Asserts that the file has been found.

Parameters

[in]

log

redo log

Returns

iterator to the file containing current log encryption header

log_encryption_generate_metadata()

dberr_t log_encryption_generate_metadata

(

)

Generate new encryption information for REDO log.

Returns

DB_SUCCESS or DB_ERROR

log_encryption_read()

dberr_t log_encryption_read	(	log_t &	log,
		ib::redo::Handler_interface::Metadata_value &	block
	)

Reads the log encryption header to get the redo log encryption information.

Read is done using the file which contains the current checkpoint_lsn.

Parameters

[in]	log	redo log
[out]	block	block to read encryption information into

Returns

DB_SUCCESS or DB_ERROR

log_encryption_update_and_write_header()

dberr_t log_encryption_update_and_write_header	(	log_t &	log,
		const ib::redo::Handler_interface::Metadata_value	block
	)

Update in-mem encryption information with the new information and also write this new information to encryption header.

Parameters

[in,out]	log	redo log
[in]	block	block containing new encryption information

Returns

DB_SUCCESS or DB_ERROR

log_file_header_fill_encryption()

bool log_file_header_fill_encryption	(	const Encryption_metadata &	encryption_metadata,
		bool	encrypt_key,
		byte *	buf
	)

Writes encryption information to log header.

Parameters

[in]	encryption_metadata	encryption metadata (algorithm, key, iv)
[in]	encrypt_key	encrypt with master key
[in,out]	buf	log file encryption header

log_read_encryption_info()

dberr_t log_read_encryption_info

(

log_t &

log

)

Read the log encryption information from Redo Log Handler and update log.m_encryption_metadata and log.m_encryption_buf.

Parameters

[out]

log

redo log

Returns

DB_SUCCESS or DB_ERROR