@ -1,6 +1,6 @@
/*****************************************************************************
Copyright ( C ) 2013 , 2015 , Google Inc . All Rights Reserved .
Copyright ( C ) 2014 , 2016 , MariaDB Corporation . All Rights Reserved .
Copyright ( C ) 2014 , 2017 , MariaDB Corporation . All Rights Reserved .
This program is free software ; you can redistribute it and / or modify it under
the terms of the GNU General Public License as published by the Free Software
@ -24,14 +24,16 @@ Modified Jan Lindström jan.lindstrom@mariadb.com
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
# include "fil0fil.h"
# include "mach0data.h"
# include "page0size.h"
# include "page0zip.h"
# ifndef UNIV_INNOCHECKSUM
# include "fil0crypt.h"
# include "srv0srv.h"
# include "srv0start.h"
# include "mach0data.h"
# include "log0recv.h"
# include "mtr0mtr.h"
# include "mtr0log.h"
# include "page0zip.h"
# include "ut0ut.h"
# include "btr0scrub.h"
# include "fsp0fsp.h"
@ -910,81 +912,6 @@ fil_crypt_calculate_checksum(
return checksum ;
}
/*********************************************************************
Verify checksum for a page ( iff it ' s encrypted )
NOTE : currently this function can only be run in single threaded mode
as it modifies srv_checksum_algorithm ( temporarily )
@ return true if page is encrypted AND OK , false otherwise */
UNIV_INTERN
bool
fil_space_verify_crypt_checksum (
/*============================*/
const byte * src_frame , /*!< in: page the verify */
const page_size_t & page_size ) /*!< in: page size */
{
// key version
uint key_version = mach_read_from_4 (
src_frame + FIL_PAGE_FILE_FLUSH_LSN_OR_KEY_VERSION ) ;
if ( key_version = = 0 ) {
return false ; // unencrypted page
}
/* "trick" the normal checksum routines by storing the post-encryption
* checksum into the normal checksum field allowing for reuse of
* the normal routines */
// post encryption checksum
ib_uint32_t stored_post_encryption = mach_read_from_4 (
src_frame + FIL_PAGE_FILE_FLUSH_LSN_OR_KEY_VERSION + 4 ) ;
// save pre encryption checksum for restore in end of this function
ib_uint32_t stored_pre_encryption = mach_read_from_4 (
src_frame + FIL_PAGE_SPACE_OR_CHKSUM ) ;
ib_uint32_t checksum_field2 = mach_read_from_4 (
src_frame + UNIV_PAGE_SIZE - FIL_PAGE_END_LSN_OLD_CHKSUM ) ;
/** prepare frame for usage of normal checksum routines */
mach_write_to_4 ( const_cast < byte * > ( src_frame ) + FIL_PAGE_SPACE_OR_CHKSUM ,
stored_post_encryption ) ;
/* NOTE: this function is (currently) only run when restoring
* dblwr - buffer , server is single threaded so it ' s safe to modify
* srv_checksum_algorithm */
srv_checksum_algorithm_t save_checksum_algorithm =
( srv_checksum_algorithm_t ) srv_checksum_algorithm ;
if ( ! page_size . is_compressed ( ) & &
( save_checksum_algorithm = = SRV_CHECKSUM_ALGORITHM_STRICT_INNODB | |
save_checksum_algorithm = = SRV_CHECKSUM_ALGORITHM_INNODB ) ) {
/* handle ALGORITHM_INNODB specially,
* " downgrade " to ALGORITHM_INNODB and store BUF_NO_CHECKSUM_MAGIC
* checksum_field2 is sort of pointless anyway . . .
*/
srv_checksum_algorithm = SRV_CHECKSUM_ALGORITHM_INNODB ;
mach_write_to_4 ( const_cast < byte * > ( src_frame ) +
UNIV_PAGE_SIZE - FIL_PAGE_END_LSN_OLD_CHKSUM ,
BUF_NO_CHECKSUM_MAGIC ) ;
}
/* verify checksums */
ibool corrupted = buf_page_is_corrupted ( false , src_frame , page_size , false ) ;
/** restore frame & algorithm */
srv_checksum_algorithm = save_checksum_algorithm ;
mach_write_to_4 ( const_cast < byte * > ( src_frame ) +
FIL_PAGE_SPACE_OR_CHKSUM ,
stored_pre_encryption ) ;
mach_write_to_4 ( const_cast < byte * > ( src_frame ) +
UNIV_PAGE_SIZE - FIL_PAGE_END_LSN_OLD_CHKSUM ,
checksum_field2 ) ;
return ( ! corrupted ) ;
}
/***********************************************************************/
/** A copy of global key state */
@ -2671,3 +2598,93 @@ fil_space_get_scrub_status(
return crypt_data = = NULL ? 1 : 0 ;
}
# endif /* UNIV_INNOCHECKSUM */
/*********************************************************************
Verify checksum for a page ( iff it ' s encrypted )
NOTE : currently this function can only be run in single threaded mode
as it modifies srv_checksum_algorithm ( temporarily )
@ param [ in ] src_fame page to verify
@ param [ in ] page_size page_size
@ param [ in ] page_no page number of given read_buf
@ param [ in ] strict_check true if strict - check option is enabled
@ return true if page is encrypted AND OK , false otherwise */
UNIV_INTERN
bool
fil_space_verify_crypt_checksum (
/*============================*/
const byte * src_frame , /*!< in: page the verify */
const page_size_t & page_size /*!< in: page size */
# ifdef UNIV_INNOCHECKSUM
, uintmax_t page_no ,
bool strict_check
# endif /* UNIV_INNOCHECKSUM */
)
{
// key version
uint key_version = mach_read_from_4 (
src_frame + FIL_PAGE_FILE_FLUSH_LSN_OR_KEY_VERSION ) ;
if ( key_version = = 0 ) {
return false ; // unencrypted page
}
/* "trick" the normal checksum routines by storing the post-encryption
* checksum into the normal checksum field allowing for reuse of
* the normal routines */
// post encryption checksum
ib_uint32_t stored_post_encryption = mach_read_from_4 (
src_frame + FIL_PAGE_FILE_FLUSH_LSN_OR_KEY_VERSION + 4 ) ;
// save pre encryption checksum for restore in end of this function
ib_uint32_t stored_pre_encryption = mach_read_from_4 (
src_frame + FIL_PAGE_SPACE_OR_CHKSUM ) ;
ib_uint32_t checksum_field2 = mach_read_from_4 (
src_frame + UNIV_PAGE_SIZE - FIL_PAGE_END_LSN_OLD_CHKSUM ) ;
/** prepare frame for usage of normal checksum routines */
mach_write_to_4 ( const_cast < byte * > ( src_frame ) + FIL_PAGE_SPACE_OR_CHKSUM ,
stored_post_encryption ) ;
/* NOTE: this function is (currently) only run when restoring
* dblwr - buffer , server is single threaded so it ' s safe to modify
* srv_checksum_algorithm */
srv_checksum_algorithm_t save_checksum_algorithm =
( srv_checksum_algorithm_t ) srv_checksum_algorithm ;
if ( ! page_size . is_compressed ( ) & &
( save_checksum_algorithm = = SRV_CHECKSUM_ALGORITHM_STRICT_INNODB | |
save_checksum_algorithm = = SRV_CHECKSUM_ALGORITHM_INNODB ) ) {
/* handle ALGORITHM_INNODB specially,
* " downgrade " to ALGORITHM_INNODB and store BUF_NO_CHECKSUM_MAGIC
* checksum_field2 is sort of pointless anyway . . .
*/
srv_checksum_algorithm = SRV_CHECKSUM_ALGORITHM_INNODB ;
mach_write_to_4 ( const_cast < byte * > ( src_frame ) +
UNIV_PAGE_SIZE - FIL_PAGE_END_LSN_OLD_CHKSUM ,
BUF_NO_CHECKSUM_MAGIC ) ;
}
/* verify checksums */
bool corrupted = buf_page_is_corrupted ( false , src_frame ,
page_size , false
# ifdef UNIV_INNOCHECKSUM
, page_no , strict_check , false , NULL
# endif /* UNIV_INNOCHECKSUM */
) ;
/** restore frame & algorithm */
srv_checksum_algorithm = save_checksum_algorithm ;
mach_write_to_4 ( const_cast < byte * > ( src_frame ) +
FIL_PAGE_SPACE_OR_CHKSUM ,
stored_pre_encryption ) ;
mach_write_to_4 ( const_cast < byte * > ( src_frame ) +
UNIV_PAGE_SIZE - FIL_PAGE_END_LSN_OLD_CHKSUM ,
checksum_field2 ) ;
return ( ! corrupted ) ;
}
Jan Lindström
9 years ago