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18b0176a05
MDEV-8409: Changing file-key-management-encryption-algorithm causes crash and no real info why Analysis: Both bugs has two different error cases. Firstly, at startup when server reads latest checkpoint but requested key_version, key management plugin or encryption algorithm or method is not found leading corrupted log entry. Secondly, similarly when reading system tablespace if requested key_version, key management plugin or encryption algorithm or method is not found leading buffer pool page corruption. Fix: Firsly, when reading checkpoint at startup check if the log record may be encrypted and if we find that it could be encrypted, print error message and do not start server. Secondly, if page is buffer pool seems corrupted but we find out that there is crypt_info, print additional error message before asserting.
120 lines
4.1 KiB
C
120 lines
4.1 KiB
C
/*****************************************************************************
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Copyright (C) 2013, 2015, Google Inc. All Rights Reserved.
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Copyright (C) 2014, 2015, 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 02110-1301 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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*******************************************************/
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#ifndef log0crypt_h
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#define log0crypt_h
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#include "univ.i"
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#include "ut0byte.h"
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#include "my_crypt.h"
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typedef int Crypt_result;
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/* If true, enable redo log encryption. */
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extern my_bool srv_encrypt_log;
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/***********************************************************************
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Set next checkpoint's key version to latest one, and generate new key */
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UNIV_INTERN
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void
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log_crypt_set_ver_and_key(
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/*======================*/
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ib_uint64_t next_checkpoint_no);/*!< in: next checkpoint no */
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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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/*********************************************************************//**
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Read the crypto (version, msg and iv) info, which has been used for
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log blocks with lsn <= this checkpoint's lsn, from a log header's
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checkpoint buf. */
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UNIV_INTERN
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bool
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log_crypt_read_checkpoint_buf(
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/*===========================*/
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const byte* buf); /*!< in: checkpoint buffer */
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/********************************************************
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Encrypt one or more log block before it is flushed to disk */
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UNIV_INTERN
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void
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log_encrypt_before_write(
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/*=====================*/
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ib_uint64_t next_checkpoint_no, /*!< in: log group to be flushed */
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byte* block, /*!< in/out: pointer to a log block */
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const ulint size); /*!< in: size of log blocks */
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/********************************************************
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Decrypt a specified log segment after they are read from a log file to a buffer.
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*/
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UNIV_INTERN
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void
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log_decrypt_after_read(
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/*===================*/
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byte* frame, /*!< in/out: log segment */
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const ulint size); /*!< in: log segment size */
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/* Error codes for crypt info */
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typedef enum {
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LOG_UNENCRYPTED = 0,
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LOG_CRYPT_KEY_NOT_FOUND = 1,
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LOG_DECRYPT_MAYBE_FAILED = 2
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} log_crypt_err_t;
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/********************************************************
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Check is the checkpoint information encrypted. This check
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is based on fact has log group crypt info and based
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on this crypt info was the key version different from
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unencrypted key version. There is no realible way to
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distinguish encrypted log block from corrupted log block,
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but if log block corruption is found this function is
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used to find out if log block is maybe encrypted but
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encryption key, key management plugin or encryption
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algorithm does not match.
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@return TRUE, if log block may be encrypted */
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UNIV_INTERN
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ibool
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log_crypt_block_maybe_encrypted(
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/*============================*/
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const byte* log_block, /*!< in: log block */
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log_crypt_err_t* err_info); /*!< out: error info */
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/********************************************************
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Print crypt error message to error log */
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UNIV_INTERN
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void
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log_crypt_print_error(
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/*==================*/
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log_crypt_err_t err_info); /*!< out: error info */
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#endif // log0crypt.h
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