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723a4b1d78
- Introduce a new variable called innodb_encrypt_temporary_tables which is a boolean variable. It decides whether to encrypt the temporary tablespace. - Encrypts the temporary tablespace based on full checksum format. - Introduced a new counter to track encrypted and decrypted temporary tablespace pages. - Warnings issued if temporary table creation has conflict value with innodb_encrypt_temporary_tables - Added a new test case which reads and writes the pages from/to temporary tablespace.
121 lines
3.9 KiB
C
121 lines
3.9 KiB
C
/*****************************************************************************
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Copyright (C) 2013, 2015, Google Inc. All Rights Reserved.
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Copyright (C) 2014, 2017, MariaDB Corporation. All Rights Reserved.
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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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#ifndef log0crypt_h
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#define log0crypt_h
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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 checkpoint pages.
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@see log_crypt_write_checkpoint_buf()
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@see log_crypt_read_checkpoint_buf()
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@return whether the operation succeeded */
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UNIV_INTERN
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bool
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log_crypt_init();
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/*********************************************************************//**
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Writes the crypto (version, msg and iv) info, which has been used for
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log blocks with lsn <= this checkpoint's lsn, to a log header's
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checkpoint buf. */
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UNIV_INTERN
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void
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log_crypt_write_checkpoint_buf(
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/*===========================*/
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byte* buf); /*!< in/out: checkpoint buffer */
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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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UNIV_INTERN
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bool
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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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@return whether the decryption was successful */
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UNIV_INTERN
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bool
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log_crypt_101_read_block(byte* buf);
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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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UNIV_INTERN
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bool
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log_crypt_read_checkpoint_buf(const byte* buf);
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/** Encrypt or decrypt log blocks.
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@param[in,out] buf log blocks to encrypt or 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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@param[in] decrypt whether to decrypt instead of encrypting */
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UNIV_INTERN
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void
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log_crypt(byte* buf, lsn_t lsn, ulint size, bool decrypt = false);
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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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UNIV_INTERN
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bool
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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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/** @return whether temporary files are encrypted */
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inline bool log_tmp_is_encrypted() { return srv_encrypt_log; }
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#endif // log0crypt.h
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