mirror of
https://github.com/MariaDB/server.git
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d7c943b363
- Updated prototype for is_binary_frm_header(). - Added extra argument to ma_control_file_open(). - Added ma_control_file_open_or_create() for usage by tests. (to make test a bit simpler).
118 lines
4.2 KiB
C
118 lines
4.2 KiB
C
/*****************************************************************************
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Copyright (C) 2013, 2015, Google Inc. All Rights Reserved.
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Copyright (C) 2014, 2022, MariaDB Corporation.
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This program is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free Software
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Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along with
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this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin St, Fifth Floor, Boston, MA 02110-1335 USA
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*****************************************************************************/
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/**************************************************//**
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@file include/log0crypt.h
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Innodb log encrypt/decrypt
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Created 11/25/2013 Minli Zhu
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Modified Jan Lindström jan.lindstrom@mariadb.com
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MDEV-11782: Rewritten for MariaDB 10.2 by Marko Mäkelä, MariaDB Corporation.
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*******************************************************/
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#pragma once
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#include "log0log.h"
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/** innodb_encrypt_log: whether to encrypt the redo log */
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extern my_bool srv_encrypt_log;
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/** Initialize the redo log encryption key and random parameters
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when creating a new redo log.
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The random parameters will be persisted in the log header.
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@see log_crypt_write_header()
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@see log_crypt_read_header()
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@return whether the operation succeeded */
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bool log_crypt_init();
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/** Add the encryption information to the log header buffer.
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@param buf part of log header buffer */
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void log_crypt_write_header(byte *buf);
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/** Read the encryption information from a redo log checkpoint buffer.
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@param buf part of checkpoint buffer
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@return whether the operation was successful */
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bool log_crypt_read_header(const byte *buf);
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/** Read the MariaDB 10.1 checkpoint crypto (version, msg and iv) info.
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@param[in] buf checkpoint buffer
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@return whether the operation was successful */
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ATTRIBUTE_COLD bool log_crypt_101_read_checkpoint(const byte* buf);
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/** Decrypt a MariaDB 10.1 redo log block.
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@param[in,out] buf log block
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@param[in] start_lsn server start LSN
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@return whether the decryption was successful */
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ATTRIBUTE_COLD bool log_crypt_101_read_block(byte* buf, lsn_t start_lsn);
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/** Read the checkpoint crypto (version, msg and iv) info.
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@param[in] buf checkpoint buffer
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@return whether the operation was successful */
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ATTRIBUTE_COLD bool log_crypt_read_checkpoint_buf(const byte* buf);
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/** Decrypt log blocks.
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@param[in,out] buf log blocks to decrypt
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@param[in] lsn log sequence number of the start of the buffer
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@param[in] size size of the buffer, in bytes
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@return whether the operation succeeded */
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ATTRIBUTE_COLD bool log_decrypt(byte* buf, lsn_t lsn, ulint size);
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/** Decrypt part of a log record.
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@param iv initialization vector
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@param buf buffer for the decrypted data
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@param data the encrypted data
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@param len length of the data, in bytes
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@return buf */
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byte *log_decrypt_buf(const byte *iv, byte *buf, const byte *data, uint len);
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/** Decrypt a log snippet.
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@param iv initialization vector
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@param buf buffer to be replaced with encrypted contents
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@param end pointer past the end of buf */
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void log_decrypt_buf(const byte *iv, byte *buf, const byte *const end);
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/** Encrypt or decrypt a temporary file block.
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@param[in] src block to encrypt or decrypt
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@param[in] size size of the block
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@param[out] dst destination block
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@param[in] offs offset to block
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@param[in] encrypt true=encrypt; false=decrypt
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@return whether the operation succeeded */
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bool log_tmp_block_encrypt(
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const byte* src,
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ulint size,
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byte* dst,
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uint64_t offs,
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bool encrypt = true)
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MY_ATTRIBUTE((warn_unused_result, nonnull));
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/** Decrypt a temporary file block.
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@param[in] src block to decrypt
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@param[in] size size of the block
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@param[out] dst destination block
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@param[in] offs offset to block
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@return whether the operation succeeded */
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inline
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bool
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log_tmp_block_decrypt(
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const byte* src,
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ulint size,
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byte* dst,
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uint64_t offs)
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{
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return(log_tmp_block_encrypt(src, size, dst, offs, false));
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}
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