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34eef269eb
Always read full page 0 to determine does tablespace contain
encryption metadata. Tablespaces that are page compressed or
page compressed and encrypted do not compare checksum as
it does not exists. For encrypted tables use checksum
verification written for encrypted tables and normal tables
use normal method.
buf_page_is_checksum_valid_crc32
buf_page_is_checksum_valid_innodb
buf_page_is_checksum_valid_none
Modify Innochecksum logging to file to avoid compilation
warnings.
fil0crypt.cc fil0crypt.h
Modify to be able to use in innochecksum compilation and
move fil_space_verify_crypt_checksum to end of the file.
Add innochecksum logging to file.
univ.i
Add innochecksum strict_verify, log_file and cur_page_num
variables as extern.
page_zip_verify_checksum
Add innochecksum logging to file and remove unnecessary code.
innochecksum.cc
Lot of changes most notable able to read encryption
metadata from page 0 of the tablespace.
Added test case where we corrupt intentionally
FIL_PAGE_FILE_FLUSH_LSN_OR_KEY_VERSION (encryption key version)
FIL_PAGE_FILE_FLUSH_LSN_OR_KEY_VERSION+4 (post encryption checksum)
FIL_DATA+10 (data)
1199 lines
42 KiB
C
1199 lines
42 KiB
C
/*****************************************************************************
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Copyright (c) 1994, 2016, Oracle and/or its affiliates. All Rights Reserved.
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Copyright (c) 2013, 2016, 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 Street, Suite 500, Boston, MA 02110-1335 USA
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*****************************************************************************/
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/**************************************************//**
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@file include/page0page.h
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Index page routines
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Created 2/2/1994 Heikki Tuuri
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*******************************************************/
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#ifndef page0page_h
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#define page0page_h
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#include "univ.i"
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#include "page0types.h"
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#ifndef UNIV_INNOCHECKSUM
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#include "fil0fil.h"
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#include "buf0buf.h"
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#include "data0data.h"
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#include "dict0dict.h"
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#include "rem0rec.h"
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#endif /* !UNIV_INNOCHECKSUM*/
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#include "fsp0fsp.h"
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#ifndef UNIV_INNOCHECKSUM
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#include "mtr0mtr.h"
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#ifdef UNIV_MATERIALIZE
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#undef UNIV_INLINE
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#define UNIV_INLINE
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#endif
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/* PAGE HEADER
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===========
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Index page header starts at the first offset left free by the FIL-module */
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typedef byte page_header_t;
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#endif /* !UNIV_INNOCHECKSUM */
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#define PAGE_HEADER FSEG_PAGE_DATA /* index page header starts at this
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offset */
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/*-----------------------------*/
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#define PAGE_N_DIR_SLOTS 0 /* number of slots in page directory */
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#define PAGE_HEAP_TOP 2 /* pointer to record heap top */
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#define PAGE_N_HEAP 4 /* number of records in the heap,
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bit 15=flag: new-style compact page format */
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#define PAGE_FREE 6 /* pointer to start of page free record list */
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#define PAGE_GARBAGE 8 /* number of bytes in deleted records */
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#define PAGE_LAST_INSERT 10 /* pointer to the last inserted record, or
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NULL if this info has been reset by a delete,
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for example */
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#define PAGE_DIRECTION 12 /* last insert direction: PAGE_LEFT, ... */
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#define PAGE_N_DIRECTION 14 /* number of consecutive inserts to the same
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direction */
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#define PAGE_N_RECS 16 /* number of user records on the page */
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/** The largest DB_TRX_ID that may have modified a record on the page;
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Defined only in secondary index leaf pages and in change buffer leaf pages.
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Otherwise written as 0. @see PAGE_ROOT_AUTO_INC */
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#define PAGE_MAX_TRX_ID 18
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/** The AUTO_INCREMENT value (on persistent clustered index root pages). */
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#define PAGE_ROOT_AUTO_INC PAGE_MAX_TRX_ID
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#define PAGE_HEADER_PRIV_END 26 /* end of private data structure of the page
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header which are set in a page create */
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/*----*/
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#define PAGE_LEVEL 26 /* level of the node in an index tree; the
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leaf level is the level 0. This field should
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not be written to after page creation. */
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#define PAGE_INDEX_ID 28 /* index id where the page belongs.
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This field should not be written to after
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page creation. */
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#define PAGE_BTR_SEG_LEAF 36 /* file segment header for the leaf pages in
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a B-tree: defined only on the root page of a
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B-tree, but not in the root of an ibuf tree */
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#define PAGE_BTR_IBUF_FREE_LIST PAGE_BTR_SEG_LEAF
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#define PAGE_BTR_IBUF_FREE_LIST_NODE PAGE_BTR_SEG_LEAF
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/* in the place of PAGE_BTR_SEG_LEAF and _TOP
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there is a free list base node if the page is
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the root page of an ibuf tree, and at the same
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place is the free list node if the page is in
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a free list */
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#define PAGE_BTR_SEG_TOP (36 + FSEG_HEADER_SIZE)
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/* file segment header for the non-leaf pages
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in a B-tree: defined only on the root page of
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a B-tree, but not in the root of an ibuf
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tree */
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/*----*/
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#define PAGE_DATA (PAGE_HEADER + 36 + 2 * FSEG_HEADER_SIZE)
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/* start of data on the page */
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#define PAGE_OLD_INFIMUM (PAGE_DATA + 1 + REC_N_OLD_EXTRA_BYTES)
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/* offset of the page infimum record on an
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old-style page */
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#define PAGE_OLD_SUPREMUM (PAGE_DATA + 2 + 2 * REC_N_OLD_EXTRA_BYTES + 8)
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/* offset of the page supremum record on an
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old-style page */
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#define PAGE_OLD_SUPREMUM_END (PAGE_OLD_SUPREMUM + 9)
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/* offset of the page supremum record end on
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an old-style page */
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#define PAGE_NEW_INFIMUM (PAGE_DATA + REC_N_NEW_EXTRA_BYTES)
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/* offset of the page infimum record on a
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new-style compact page */
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#define PAGE_NEW_SUPREMUM (PAGE_DATA + 2 * REC_N_NEW_EXTRA_BYTES + 8)
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/* offset of the page supremum record on a
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new-style compact page */
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#define PAGE_NEW_SUPREMUM_END (PAGE_NEW_SUPREMUM + 8)
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/* offset of the page supremum record end on
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a new-style compact page */
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/*-----------------------------*/
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/* Heap numbers */
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#define PAGE_HEAP_NO_INFIMUM 0 /* page infimum */
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#define PAGE_HEAP_NO_SUPREMUM 1 /* page supremum */
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#define PAGE_HEAP_NO_USER_LOW 2 /* first user record in
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creation (insertion) order,
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not necessarily collation order;
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this record may have been deleted */
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/* Directions of cursor movement */
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#define PAGE_LEFT 1
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#define PAGE_RIGHT 2
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#define PAGE_SAME_REC 3
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#define PAGE_SAME_PAGE 4
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#define PAGE_NO_DIRECTION 5
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#ifndef UNIV_INNOCHECKSUM
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/* PAGE DIRECTORY
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==============
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*/
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typedef byte page_dir_slot_t;
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typedef page_dir_slot_t page_dir_t;
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/* Offset of the directory start down from the page end. We call the
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slot with the highest file address directory start, as it points to
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the first record in the list of records. */
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#define PAGE_DIR FIL_PAGE_DATA_END
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/* We define a slot in the page directory as two bytes */
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#define PAGE_DIR_SLOT_SIZE 2
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/* The offset of the physically lower end of the directory, counted from
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page end, when the page is empty */
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#define PAGE_EMPTY_DIR_START (PAGE_DIR + 2 * PAGE_DIR_SLOT_SIZE)
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/* The maximum and minimum number of records owned by a directory slot. The
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number may drop below the minimum in the first and the last slot in the
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directory. */
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#define PAGE_DIR_SLOT_MAX_N_OWNED 8
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#define PAGE_DIR_SLOT_MIN_N_OWNED 4
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extern my_bool srv_immediate_scrub_data_uncompressed;
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/************************************************************//**
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Gets the start of a page.
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@return start of the page */
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UNIV_INLINE
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page_t*
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page_align(
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/*=======*/
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const void* ptr) /*!< in: pointer to page frame */
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MY_ATTRIBUTE((const));
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/************************************************************//**
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Gets the offset within a page.
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@return offset from the start of the page */
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UNIV_INLINE
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ulint
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page_offset(
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/*========*/
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const void* ptr) /*!< in: pointer to page frame */
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MY_ATTRIBUTE((const));
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/*************************************************************//**
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Returns the max trx id field value. */
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UNIV_INLINE
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trx_id_t
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page_get_max_trx_id(
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/*================*/
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const page_t* page); /*!< in: page */
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/*************************************************************//**
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Sets the max trx id field value. */
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void
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page_set_max_trx_id(
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/*================*/
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buf_block_t* block, /*!< in/out: page */
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page_zip_des_t* page_zip,/*!< in/out: compressed page, or NULL */
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trx_id_t trx_id, /*!< in: transaction id */
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mtr_t* mtr); /*!< in/out: mini-transaction, or NULL */
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/*************************************************************//**
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Sets the max trx id field value if trx_id is bigger than the previous
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value. */
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UNIV_INLINE
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void
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page_update_max_trx_id(
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/*===================*/
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buf_block_t* block, /*!< in/out: page */
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page_zip_des_t* page_zip,/*!< in/out: compressed page whose
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uncompressed part will be updated, or NULL */
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trx_id_t trx_id, /*!< in: transaction id */
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mtr_t* mtr); /*!< in/out: mini-transaction */
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/** Persist the AUTO_INCREMENT value on a clustered index root page.
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@param[in,out] block clustered index root page
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@param[in] index clustered index
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@param[in] autoinc next available AUTO_INCREMENT value
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@param[in,out] mtr mini-transaction
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@param[in] reset whether to reset the AUTO_INCREMENT
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to a possibly smaller value than currently
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exists in the page */
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void
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page_set_autoinc(
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buf_block_t* block,
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const dict_index_t* index MY_ATTRIBUTE((unused)),
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ib_uint64_t autoinc,
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mtr_t* mtr,
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bool reset)
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MY_ATTRIBUTE((nonnull));
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/** Read the AUTO_INCREMENT value from a clustered index root page.
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@param[in] page clustered index root page
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@return the persisted AUTO_INCREMENT value */
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MY_ATTRIBUTE((nonnull, warn_unused_result))
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UNIV_INLINE
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ib_uint64_t
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page_get_autoinc(const page_t* page);
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/*************************************************************//**
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Returns the RTREE SPLIT SEQUENCE NUMBER (FIL_RTREE_SPLIT_SEQ_NUM).
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@return SPLIT SEQUENCE NUMBER */
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UNIV_INLINE
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node_seq_t
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page_get_ssn_id(
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/*============*/
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const page_t* page); /*!< in: page */
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/*************************************************************//**
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Sets the RTREE SPLIT SEQUENCE NUMBER field value */
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UNIV_INLINE
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void
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page_set_ssn_id(
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/*============*/
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buf_block_t* block, /*!< in/out: page */
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page_zip_des_t* page_zip,/*!< in/out: compressed page whose
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uncompressed part will be updated, or NULL */
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node_seq_t ssn_id, /*!< in: split sequence id */
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mtr_t* mtr); /*!< in/out: mini-transaction */
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#endif /* !UNIV_INNOCHECKSUM */
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/*************************************************************//**
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Reads the given header field. */
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UNIV_INLINE
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ulint
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page_header_get_field(
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/*==================*/
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const page_t* page, /*!< in: page */
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ulint field); /*!< in: PAGE_N_DIR_SLOTS, ... */
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#ifndef UNIV_INNOCHECKSUM
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/*************************************************************//**
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Sets the given header field. */
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UNIV_INLINE
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void
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page_header_set_field(
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/*==================*/
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page_t* page, /*!< in/out: page */
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page_zip_des_t* page_zip,/*!< in/out: compressed page whose
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uncompressed part will be updated, or NULL */
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ulint field, /*!< in: PAGE_N_DIR_SLOTS, ... */
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ulint val); /*!< in: value */
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/*************************************************************//**
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Returns the offset stored in the given header field.
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@return offset from the start of the page, or 0 */
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UNIV_INLINE
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ulint
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page_header_get_offs(
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/*=================*/
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const page_t* page, /*!< in: page */
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ulint field) /*!< in: PAGE_FREE, ... */
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MY_ATTRIBUTE((warn_unused_result));
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/*************************************************************//**
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Returns the pointer stored in the given header field, or NULL. */
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#define page_header_get_ptr(page, field) \
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(page_header_get_offs(page, field) \
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? page + page_header_get_offs(page, field) : NULL)
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/*************************************************************//**
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Sets the pointer stored in the given header field. */
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UNIV_INLINE
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void
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page_header_set_ptr(
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/*================*/
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page_t* page, /*!< in/out: page */
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page_zip_des_t* page_zip,/*!< in/out: compressed page whose
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uncompressed part will be updated, or NULL */
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ulint field, /*!< in/out: PAGE_FREE, ... */
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const byte* ptr); /*!< in: pointer or NULL*/
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/*************************************************************//**
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Resets the last insert info field in the page header. Writes to mlog
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about this operation. */
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UNIV_INLINE
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void
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page_header_reset_last_insert(
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/*==========================*/
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page_t* page, /*!< in: page */
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page_zip_des_t* page_zip,/*!< in/out: compressed page whose
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uncompressed part will be updated, or NULL */
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mtr_t* mtr); /*!< in: mtr */
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/************************************************************//**
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Gets the offset of the first record on the page.
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@return offset of the first record in record list, relative from page */
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UNIV_INLINE
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ulint
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page_get_infimum_offset(
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/*====================*/
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const page_t* page); /*!< in: page which must have record(s) */
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/************************************************************//**
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Gets the offset of the last record on the page.
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@return offset of the last record in record list, relative from page */
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UNIV_INLINE
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ulint
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page_get_supremum_offset(
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/*=====================*/
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const page_t* page); /*!< in: page which must have record(s) */
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#define page_get_infimum_rec(page) ((page) + page_get_infimum_offset(page))
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#define page_get_supremum_rec(page) ((page) + page_get_supremum_offset(page))
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/************************************************************//**
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Returns the nth record of the record list.
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This is the inverse function of page_rec_get_n_recs_before().
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@return nth record */
|
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const rec_t*
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page_rec_get_nth_const(
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/*===================*/
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const page_t* page, /*!< in: page */
|
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ulint nth) /*!< in: nth record */
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MY_ATTRIBUTE((nonnull, warn_unused_result));
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/************************************************************//**
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Returns the nth record of the record list.
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This is the inverse function of page_rec_get_n_recs_before().
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@return nth record */
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UNIV_INLINE
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rec_t*
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page_rec_get_nth(
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/*=============*/
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page_t* page, /*< in: page */
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ulint nth) /*!< in: nth record */
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MY_ATTRIBUTE((nonnull, warn_unused_result));
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/************************************************************//**
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Returns the middle record of the records on the page. If there is an
|
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even number of records in the list, returns the first record of the
|
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upper half-list.
|
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@return middle record */
|
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UNIV_INLINE
|
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rec_t*
|
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page_get_middle_rec(
|
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/*================*/
|
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page_t* page) /*!< in: page */
|
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MY_ATTRIBUTE((nonnull, warn_unused_result));
|
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/*************************************************************//**
|
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Gets the page number.
|
|
@return page number */
|
|
UNIV_INLINE
|
|
ulint
|
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page_get_page_no(
|
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/*=============*/
|
|
const page_t* page); /*!< in: page */
|
|
|
|
/*************************************************************//**
|
|
Gets the tablespace identifier.
|
|
@return space id */
|
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UNIV_INLINE
|
|
ulint
|
|
page_get_space_id(
|
|
/*==============*/
|
|
const page_t* page); /*!< in: page */
|
|
|
|
/*************************************************************//**
|
|
Gets the number of user records on page (the infimum and supremum records
|
|
are not user records).
|
|
@return number of user records */
|
|
UNIV_INLINE
|
|
ulint
|
|
page_get_n_recs(
|
|
/*============*/
|
|
const page_t* page); /*!< in: index page */
|
|
|
|
/***************************************************************//**
|
|
Returns the number of records before the given record in chain.
|
|
The number includes infimum and supremum records.
|
|
This is the inverse function of page_rec_get_nth().
|
|
@return number of records */
|
|
ulint
|
|
page_rec_get_n_recs_before(
|
|
/*=======================*/
|
|
const rec_t* rec); /*!< in: the physical record */
|
|
/*************************************************************//**
|
|
Gets the number of records in the heap.
|
|
@return number of user records */
|
|
UNIV_INLINE
|
|
ulint
|
|
page_dir_get_n_heap(
|
|
/*================*/
|
|
const page_t* page); /*!< in: index page */
|
|
/*************************************************************//**
|
|
Sets the number of records in the heap. */
|
|
UNIV_INLINE
|
|
void
|
|
page_dir_set_n_heap(
|
|
/*================*/
|
|
page_t* page, /*!< in/out: index page */
|
|
page_zip_des_t* page_zip,/*!< in/out: compressed page whose
|
|
uncompressed part will be updated, or NULL.
|
|
Note that the size of the dense page directory
|
|
in the compressed page trailer is
|
|
n_heap * PAGE_ZIP_DIR_SLOT_SIZE. */
|
|
ulint n_heap);/*!< in: number of records */
|
|
/*************************************************************//**
|
|
Gets the number of dir slots in directory.
|
|
@return number of slots */
|
|
UNIV_INLINE
|
|
ulint
|
|
page_dir_get_n_slots(
|
|
/*=================*/
|
|
const page_t* page); /*!< in: index page */
|
|
/*************************************************************//**
|
|
Sets the number of dir slots in directory. */
|
|
UNIV_INLINE
|
|
void
|
|
page_dir_set_n_slots(
|
|
/*=================*/
|
|
page_t* page, /*!< in/out: page */
|
|
page_zip_des_t* page_zip,/*!< in/out: compressed page whose
|
|
uncompressed part will be updated, or NULL */
|
|
ulint n_slots);/*!< in: number of slots */
|
|
#ifdef UNIV_DEBUG
|
|
/*************************************************************//**
|
|
Gets pointer to nth directory slot.
|
|
@return pointer to dir slot */
|
|
UNIV_INLINE
|
|
page_dir_slot_t*
|
|
page_dir_get_nth_slot(
|
|
/*==================*/
|
|
const page_t* page, /*!< in: index page */
|
|
ulint n); /*!< in: position */
|
|
#else /* UNIV_DEBUG */
|
|
# define page_dir_get_nth_slot(page, n) \
|
|
((page) + (UNIV_PAGE_SIZE - PAGE_DIR \
|
|
- (n + 1) * PAGE_DIR_SLOT_SIZE))
|
|
#endif /* UNIV_DEBUG */
|
|
/**************************************************************//**
|
|
Used to check the consistency of a record on a page.
|
|
@return TRUE if succeed */
|
|
UNIV_INLINE
|
|
ibool
|
|
page_rec_check(
|
|
/*===========*/
|
|
const rec_t* rec); /*!< in: record */
|
|
/***************************************************************//**
|
|
Gets the record pointed to by a directory slot.
|
|
@return pointer to record */
|
|
UNIV_INLINE
|
|
const rec_t*
|
|
page_dir_slot_get_rec(
|
|
/*==================*/
|
|
const page_dir_slot_t* slot); /*!< in: directory slot */
|
|
/***************************************************************//**
|
|
This is used to set the record offset in a directory slot. */
|
|
UNIV_INLINE
|
|
void
|
|
page_dir_slot_set_rec(
|
|
/*==================*/
|
|
page_dir_slot_t* slot, /*!< in: directory slot */
|
|
rec_t* rec); /*!< in: record on the page */
|
|
/***************************************************************//**
|
|
Gets the number of records owned by a directory slot.
|
|
@return number of records */
|
|
UNIV_INLINE
|
|
ulint
|
|
page_dir_slot_get_n_owned(
|
|
/*======================*/
|
|
const page_dir_slot_t* slot); /*!< in: page directory slot */
|
|
/***************************************************************//**
|
|
This is used to set the owned records field of a directory slot. */
|
|
UNIV_INLINE
|
|
void
|
|
page_dir_slot_set_n_owned(
|
|
/*======================*/
|
|
page_dir_slot_t*slot, /*!< in/out: directory slot */
|
|
page_zip_des_t* page_zip,/*!< in/out: compressed page, or NULL */
|
|
ulint n); /*!< in: number of records owned by the slot */
|
|
/************************************************************//**
|
|
Calculates the space reserved for directory slots of a given
|
|
number of records. The exact value is a fraction number
|
|
n * PAGE_DIR_SLOT_SIZE / PAGE_DIR_SLOT_MIN_N_OWNED, and it is
|
|
rounded upwards to an integer. */
|
|
UNIV_INLINE
|
|
ulint
|
|
page_dir_calc_reserved_space(
|
|
/*=========================*/
|
|
ulint n_recs); /*!< in: number of records */
|
|
/***************************************************************//**
|
|
Looks for the directory slot which owns the given record.
|
|
@return the directory slot number */
|
|
ulint
|
|
page_dir_find_owner_slot(
|
|
/*=====================*/
|
|
const rec_t* rec); /*!< in: the physical record */
|
|
/************************************************************//**
|
|
Determine whether the page is in new-style compact format.
|
|
@return nonzero if the page is in compact format, zero if it is in
|
|
old-style format */
|
|
UNIV_INLINE
|
|
ulint
|
|
page_is_comp(
|
|
/*=========*/
|
|
const page_t* page); /*!< in: index page */
|
|
/************************************************************//**
|
|
TRUE if the record is on a page in compact format.
|
|
@return nonzero if in compact format */
|
|
UNIV_INLINE
|
|
ulint
|
|
page_rec_is_comp(
|
|
/*=============*/
|
|
const rec_t* rec); /*!< in: record */
|
|
/***************************************************************//**
|
|
Returns the heap number of a record.
|
|
@return heap number */
|
|
UNIV_INLINE
|
|
ulint
|
|
page_rec_get_heap_no(
|
|
/*=================*/
|
|
const rec_t* rec); /*!< in: the physical record */
|
|
/************************************************************//**
|
|
Determine whether the page is a B-tree leaf.
|
|
@return true if the page is a B-tree leaf (PAGE_LEVEL = 0) */
|
|
UNIV_INLINE
|
|
bool
|
|
page_is_leaf(
|
|
/*=========*/
|
|
const page_t* page) /*!< in: page */
|
|
MY_ATTRIBUTE((warn_unused_result));
|
|
/************************************************************//**
|
|
Determine whether the page is empty.
|
|
@return true if the page is empty (PAGE_N_RECS = 0) */
|
|
UNIV_INLINE
|
|
bool
|
|
page_is_empty(
|
|
/*==========*/
|
|
const page_t* page) /*!< in: page */
|
|
MY_ATTRIBUTE((warn_unused_result));
|
|
/** Determine whether a page is an index root page.
|
|
@param[in] page page frame
|
|
@return true if the page is a root page of an index */
|
|
UNIV_INLINE
|
|
bool
|
|
page_is_root(
|
|
const page_t* page)
|
|
MY_ATTRIBUTE((warn_unused_result));
|
|
/************************************************************//**
|
|
Determine whether the page contains garbage.
|
|
@return true if the page contains garbage (PAGE_GARBAGE is not 0) */
|
|
UNIV_INLINE
|
|
bool
|
|
page_has_garbage(
|
|
/*=============*/
|
|
const page_t* page) /*!< in: page */
|
|
MY_ATTRIBUTE((warn_unused_result));
|
|
/************************************************************//**
|
|
Gets the pointer to the next record on the page.
|
|
@return pointer to next record */
|
|
UNIV_INLINE
|
|
const rec_t*
|
|
page_rec_get_next_low(
|
|
/*==================*/
|
|
const rec_t* rec, /*!< in: pointer to record */
|
|
ulint comp); /*!< in: nonzero=compact page layout */
|
|
/************************************************************//**
|
|
Gets the pointer to the next record on the page.
|
|
@return pointer to next record */
|
|
UNIV_INLINE
|
|
rec_t*
|
|
page_rec_get_next(
|
|
/*==============*/
|
|
rec_t* rec); /*!< in: pointer to record */
|
|
/************************************************************//**
|
|
Gets the pointer to the next record on the page.
|
|
@return pointer to next record */
|
|
UNIV_INLINE
|
|
const rec_t*
|
|
page_rec_get_next_const(
|
|
/*====================*/
|
|
const rec_t* rec); /*!< in: pointer to record */
|
|
/************************************************************//**
|
|
Gets the pointer to the next non delete-marked record on the page.
|
|
If all subsequent records are delete-marked, then this function
|
|
will return the supremum record.
|
|
@return pointer to next non delete-marked record or pointer to supremum */
|
|
UNIV_INLINE
|
|
const rec_t*
|
|
page_rec_get_next_non_del_marked(
|
|
/*=============================*/
|
|
const rec_t* rec); /*!< in: pointer to record */
|
|
/************************************************************//**
|
|
Sets the pointer to the next record on the page. */
|
|
UNIV_INLINE
|
|
void
|
|
page_rec_set_next(
|
|
/*==============*/
|
|
rec_t* rec, /*!< in: pointer to record,
|
|
must not be page supremum */
|
|
const rec_t* next); /*!< in: pointer to next record,
|
|
must not be page infimum */
|
|
/************************************************************//**
|
|
Gets the pointer to the previous record.
|
|
@return pointer to previous record */
|
|
UNIV_INLINE
|
|
const rec_t*
|
|
page_rec_get_prev_const(
|
|
/*====================*/
|
|
const rec_t* rec); /*!< in: pointer to record, must not be page
|
|
infimum */
|
|
/************************************************************//**
|
|
Gets the pointer to the previous record.
|
|
@return pointer to previous record */
|
|
UNIV_INLINE
|
|
rec_t*
|
|
page_rec_get_prev(
|
|
/*==============*/
|
|
rec_t* rec); /*!< in: pointer to record,
|
|
must not be page infimum */
|
|
/************************************************************//**
|
|
TRUE if the record is a user record on the page.
|
|
@return TRUE if a user record */
|
|
UNIV_INLINE
|
|
ibool
|
|
page_rec_is_user_rec_low(
|
|
/*=====================*/
|
|
ulint offset) /*!< in: record offset on page */
|
|
MY_ATTRIBUTE((const));
|
|
/************************************************************//**
|
|
TRUE if the record is the supremum record on a page.
|
|
@return TRUE if the supremum record */
|
|
UNIV_INLINE
|
|
ibool
|
|
page_rec_is_supremum_low(
|
|
/*=====================*/
|
|
ulint offset) /*!< in: record offset on page */
|
|
MY_ATTRIBUTE((const));
|
|
/************************************************************//**
|
|
TRUE if the record is the infimum record on a page.
|
|
@return TRUE if the infimum record */
|
|
UNIV_INLINE
|
|
ibool
|
|
page_rec_is_infimum_low(
|
|
/*====================*/
|
|
ulint offset) /*!< in: record offset on page */
|
|
MY_ATTRIBUTE((const));
|
|
|
|
/************************************************************//**
|
|
TRUE if the record is a user record on the page.
|
|
@return TRUE if a user record */
|
|
UNIV_INLINE
|
|
ibool
|
|
page_rec_is_user_rec(
|
|
/*=================*/
|
|
const rec_t* rec) /*!< in: record */
|
|
MY_ATTRIBUTE((warn_unused_result));
|
|
/************************************************************//**
|
|
TRUE if the record is the supremum record on a page.
|
|
@return TRUE if the supremum record */
|
|
UNIV_INLINE
|
|
ibool
|
|
page_rec_is_supremum(
|
|
/*=================*/
|
|
const rec_t* rec) /*!< in: record */
|
|
MY_ATTRIBUTE((warn_unused_result));
|
|
|
|
/************************************************************//**
|
|
TRUE if the record is the infimum record on a page.
|
|
@return TRUE if the infimum record */
|
|
UNIV_INLINE
|
|
ibool
|
|
page_rec_is_infimum(
|
|
/*================*/
|
|
const rec_t* rec) /*!< in: record */
|
|
MY_ATTRIBUTE((warn_unused_result));
|
|
|
|
/************************************************************//**
|
|
true if the record is the first user record on a page.
|
|
@return true if the first user record */
|
|
UNIV_INLINE
|
|
bool
|
|
page_rec_is_first(
|
|
/*==============*/
|
|
const rec_t* rec, /*!< in: record */
|
|
const page_t* page) /*!< in: page */
|
|
MY_ATTRIBUTE((warn_unused_result));
|
|
|
|
/************************************************************//**
|
|
true if the record is the second user record on a page.
|
|
@return true if the second user record */
|
|
UNIV_INLINE
|
|
bool
|
|
page_rec_is_second(
|
|
/*===============*/
|
|
const rec_t* rec, /*!< in: record */
|
|
const page_t* page) /*!< in: page */
|
|
MY_ATTRIBUTE((warn_unused_result));
|
|
|
|
/************************************************************//**
|
|
true if the record is the last user record on a page.
|
|
@return true if the last user record */
|
|
UNIV_INLINE
|
|
bool
|
|
page_rec_is_last(
|
|
/*=============*/
|
|
const rec_t* rec, /*!< in: record */
|
|
const page_t* page) /*!< in: page */
|
|
MY_ATTRIBUTE((warn_unused_result));
|
|
|
|
/************************************************************//**
|
|
true if the record is the second last user record on a page.
|
|
@return true if the second last user record */
|
|
UNIV_INLINE
|
|
bool
|
|
page_rec_is_second_last(
|
|
/*====================*/
|
|
const rec_t* rec, /*!< in: record */
|
|
const page_t* page) /*!< in: page */
|
|
MY_ATTRIBUTE((warn_unused_result));
|
|
|
|
/***************************************************************//**
|
|
Looks for the record which owns the given record.
|
|
@return the owner record */
|
|
UNIV_INLINE
|
|
rec_t*
|
|
page_rec_find_owner_rec(
|
|
/*====================*/
|
|
rec_t* rec); /*!< in: the physical record */
|
|
|
|
/***********************************************************************//**
|
|
Write a 32-bit field in a data dictionary record. */
|
|
UNIV_INLINE
|
|
void
|
|
page_rec_write_field(
|
|
/*=================*/
|
|
rec_t* rec, /*!< in/out: record to update */
|
|
ulint i, /*!< in: index of the field to update */
|
|
ulint val, /*!< in: value to write */
|
|
mtr_t* mtr) /*!< in/out: mini-transaction */
|
|
MY_ATTRIBUTE((nonnull));
|
|
/************************************************************//**
|
|
Returns the maximum combined size of records which can be inserted on top
|
|
of record heap.
|
|
@return maximum combined size for inserted records */
|
|
UNIV_INLINE
|
|
ulint
|
|
page_get_max_insert_size(
|
|
/*=====================*/
|
|
const page_t* page, /*!< in: index page */
|
|
ulint n_recs);/*!< in: number of records */
|
|
/************************************************************//**
|
|
Returns the maximum combined size of records which can be inserted on top
|
|
of record heap if page is first reorganized.
|
|
@return maximum combined size for inserted records */
|
|
UNIV_INLINE
|
|
ulint
|
|
page_get_max_insert_size_after_reorganize(
|
|
/*======================================*/
|
|
const page_t* page, /*!< in: index page */
|
|
ulint n_recs);/*!< in: number of records */
|
|
/*************************************************************//**
|
|
Calculates free space if a page is emptied.
|
|
@return free space */
|
|
UNIV_INLINE
|
|
ulint
|
|
page_get_free_space_of_empty(
|
|
/*=========================*/
|
|
ulint comp) /*!< in: nonzero=compact page format */
|
|
MY_ATTRIBUTE((const));
|
|
/**********************************************************//**
|
|
Returns the base extra size of a physical record. This is the
|
|
size of the fixed header, independent of the record size.
|
|
@return REC_N_NEW_EXTRA_BYTES or REC_N_OLD_EXTRA_BYTES */
|
|
UNIV_INLINE
|
|
ulint
|
|
page_rec_get_base_extra_size(
|
|
/*=========================*/
|
|
const rec_t* rec); /*!< in: physical record */
|
|
/************************************************************//**
|
|
Returns the sum of the sizes of the records in the record list
|
|
excluding the infimum and supremum records.
|
|
@return data in bytes */
|
|
UNIV_INLINE
|
|
ulint
|
|
page_get_data_size(
|
|
/*===============*/
|
|
const page_t* page); /*!< in: index page */
|
|
/************************************************************//**
|
|
Allocates a block of memory from the head of the free list
|
|
of an index page. */
|
|
UNIV_INLINE
|
|
void
|
|
page_mem_alloc_free(
|
|
/*================*/
|
|
page_t* page, /*!< in/out: index page */
|
|
page_zip_des_t* page_zip,/*!< in/out: compressed page with enough
|
|
space available for inserting the record,
|
|
or NULL */
|
|
rec_t* next_rec,/*!< in: pointer to the new head of the
|
|
free record list */
|
|
ulint need); /*!< in: number of bytes allocated */
|
|
/************************************************************//**
|
|
Allocates a block of memory from the heap of an index page.
|
|
@return pointer to start of allocated buffer, or NULL if allocation fails */
|
|
byte*
|
|
page_mem_alloc_heap(
|
|
/*================*/
|
|
page_t* page, /*!< in/out: index page */
|
|
page_zip_des_t* page_zip,/*!< in/out: compressed page with enough
|
|
space available for inserting the record,
|
|
or NULL */
|
|
ulint need, /*!< in: total number of bytes needed */
|
|
ulint* heap_no);/*!< out: this contains the heap number
|
|
of the allocated record
|
|
if allocation succeeds */
|
|
/************************************************************//**
|
|
Puts a record to free list. */
|
|
UNIV_INLINE
|
|
void
|
|
page_mem_free(
|
|
/*==========*/
|
|
page_t* page, /*!< in/out: index page */
|
|
page_zip_des_t* page_zip,/*!< in/out: compressed page,
|
|
or NULL */
|
|
rec_t* rec, /*!< in: pointer to the (origin of)
|
|
record */
|
|
const dict_index_t* index, /*!< in: index of rec */
|
|
const ulint* offsets);/*!< in: array returned by
|
|
rec_get_offsets() */
|
|
/**********************************************************//**
|
|
Create an uncompressed B-tree index page.
|
|
@return pointer to the page */
|
|
page_t*
|
|
page_create(
|
|
/*========*/
|
|
buf_block_t* block, /*!< in: a buffer block where the
|
|
page is created */
|
|
mtr_t* mtr, /*!< in: mini-transaction handle */
|
|
ulint comp, /*!< in: nonzero=compact page format */
|
|
bool is_rtree); /*!< in: if creating R-tree page */
|
|
/**********************************************************//**
|
|
Create a compressed B-tree index page.
|
|
@return pointer to the page */
|
|
page_t*
|
|
page_create_zip(
|
|
/*============*/
|
|
buf_block_t* block, /*!< in/out: a buffer frame
|
|
where the page is created */
|
|
dict_index_t* index, /*!< in: the index of the
|
|
page, or NULL when applying
|
|
TRUNCATE log
|
|
record during recovery */
|
|
ulint level, /*!< in: the B-tree level of
|
|
the page */
|
|
trx_id_t max_trx_id, /*!< in: PAGE_MAX_TRX_ID */
|
|
const redo_page_compress_t* page_comp_info,
|
|
/*!< in: used for applying
|
|
TRUNCATE log
|
|
record during recovery */
|
|
mtr_t* mtr); /*!< in/out: mini-transaction
|
|
handle */
|
|
/**********************************************************//**
|
|
Empty a previously created B-tree index page. */
|
|
void
|
|
page_create_empty(
|
|
/*==============*/
|
|
buf_block_t* block, /*!< in/out: B-tree block */
|
|
dict_index_t* index, /*!< in: the index of the page */
|
|
mtr_t* mtr) /*!< in/out: mini-transaction */
|
|
MY_ATTRIBUTE((nonnull(1,2)));
|
|
/*************************************************************//**
|
|
Differs from page_copy_rec_list_end, because this function does not
|
|
touch the lock table and max trx id on page or compress the page.
|
|
|
|
IMPORTANT: The caller will have to update IBUF_BITMAP_FREE
|
|
if new_block is a compressed leaf page in a secondary index.
|
|
This has to be done either within the same mini-transaction,
|
|
or by invoking ibuf_reset_free_bits() before mtr_commit(). */
|
|
void
|
|
page_copy_rec_list_end_no_locks(
|
|
/*============================*/
|
|
buf_block_t* new_block, /*!< in: index page to copy to */
|
|
buf_block_t* block, /*!< in: index page of rec */
|
|
rec_t* rec, /*!< in: record on page */
|
|
dict_index_t* index, /*!< in: record descriptor */
|
|
mtr_t* mtr); /*!< in: mtr */
|
|
/*************************************************************//**
|
|
Copies records from page to new_page, from the given record onward,
|
|
including that record. Infimum and supremum records are not copied.
|
|
The records are copied to the start of the record list on new_page.
|
|
|
|
IMPORTANT: The caller will have to update IBUF_BITMAP_FREE
|
|
if new_block is a compressed leaf page in a secondary index.
|
|
This has to be done either within the same mini-transaction,
|
|
or by invoking ibuf_reset_free_bits() before mtr_commit().
|
|
|
|
@return pointer to the original successor of the infimum record on
|
|
new_page, or NULL on zip overflow (new_block will be decompressed) */
|
|
rec_t*
|
|
page_copy_rec_list_end(
|
|
/*===================*/
|
|
buf_block_t* new_block, /*!< in/out: index page to copy to */
|
|
buf_block_t* block, /*!< in: index page containing rec */
|
|
rec_t* rec, /*!< in: record on page */
|
|
dict_index_t* index, /*!< in: record descriptor */
|
|
mtr_t* mtr) /*!< in: mtr */
|
|
MY_ATTRIBUTE((nonnull));
|
|
/*************************************************************//**
|
|
Copies records from page to new_page, up to the given record, NOT
|
|
including that record. Infimum and supremum records are not copied.
|
|
The records are copied to the end of the record list on new_page.
|
|
|
|
IMPORTANT: The caller will have to update IBUF_BITMAP_FREE
|
|
if new_block is a compressed leaf page in a secondary index.
|
|
This has to be done either within the same mini-transaction,
|
|
or by invoking ibuf_reset_free_bits() before mtr_commit().
|
|
|
|
@return pointer to the original predecessor of the supremum record on
|
|
new_page, or NULL on zip overflow (new_block will be decompressed) */
|
|
rec_t*
|
|
page_copy_rec_list_start(
|
|
/*=====================*/
|
|
buf_block_t* new_block, /*!< in/out: index page to copy to */
|
|
buf_block_t* block, /*!< in: index page containing rec */
|
|
rec_t* rec, /*!< in: record on page */
|
|
dict_index_t* index, /*!< in: record descriptor */
|
|
mtr_t* mtr) /*!< in: mtr */
|
|
MY_ATTRIBUTE((nonnull));
|
|
/*************************************************************//**
|
|
Deletes records from a page from a given record onward, including that record.
|
|
The infimum and supremum records are not deleted. */
|
|
void
|
|
page_delete_rec_list_end(
|
|
/*=====================*/
|
|
rec_t* rec, /*!< in: pointer to record on page */
|
|
buf_block_t* block, /*!< in: buffer block of the page */
|
|
dict_index_t* index, /*!< in: record descriptor */
|
|
ulint n_recs, /*!< in: number of records to delete,
|
|
or ULINT_UNDEFINED if not known */
|
|
ulint size, /*!< in: the sum of the sizes of the
|
|
records in the end of the chain to
|
|
delete, or ULINT_UNDEFINED if not known */
|
|
mtr_t* mtr) /*!< in: mtr */
|
|
MY_ATTRIBUTE((nonnull));
|
|
/*************************************************************//**
|
|
Deletes records from page, up to the given record, NOT including
|
|
that record. Infimum and supremum records are not deleted. */
|
|
void
|
|
page_delete_rec_list_start(
|
|
/*=======================*/
|
|
rec_t* rec, /*!< in: record on page */
|
|
buf_block_t* block, /*!< in: buffer block of the page */
|
|
dict_index_t* index, /*!< in: record descriptor */
|
|
mtr_t* mtr) /*!< in: mtr */
|
|
MY_ATTRIBUTE((nonnull));
|
|
/*************************************************************//**
|
|
Moves record list end to another page. Moved records include
|
|
split_rec.
|
|
|
|
IMPORTANT: The caller will have to update IBUF_BITMAP_FREE
|
|
if new_block is a compressed leaf page in a secondary index.
|
|
This has to be done either within the same mini-transaction,
|
|
or by invoking ibuf_reset_free_bits() before mtr_commit().
|
|
|
|
@return TRUE on success; FALSE on compression failure (new_block will
|
|
be decompressed) */
|
|
ibool
|
|
page_move_rec_list_end(
|
|
/*===================*/
|
|
buf_block_t* new_block, /*!< in/out: index page where to move */
|
|
buf_block_t* block, /*!< in: index page from where to move */
|
|
rec_t* split_rec, /*!< in: first record to move */
|
|
dict_index_t* index, /*!< in: record descriptor */
|
|
mtr_t* mtr) /*!< in: mtr */
|
|
MY_ATTRIBUTE((nonnull(1, 2, 4, 5)));
|
|
/*************************************************************//**
|
|
Moves record list start to another page. Moved records do not include
|
|
split_rec.
|
|
|
|
IMPORTANT: The caller will have to update IBUF_BITMAP_FREE
|
|
if new_block is a compressed leaf page in a secondary index.
|
|
This has to be done either within the same mini-transaction,
|
|
or by invoking ibuf_reset_free_bits() before mtr_commit().
|
|
|
|
@return TRUE on success; FALSE on compression failure */
|
|
ibool
|
|
page_move_rec_list_start(
|
|
/*=====================*/
|
|
buf_block_t* new_block, /*!< in/out: index page where to move */
|
|
buf_block_t* block, /*!< in/out: page containing split_rec */
|
|
rec_t* split_rec, /*!< in: first record not to move */
|
|
dict_index_t* index, /*!< in: record descriptor */
|
|
mtr_t* mtr) /*!< in: mtr */
|
|
MY_ATTRIBUTE((nonnull(1, 2, 4, 5)));
|
|
/****************************************************************//**
|
|
Splits a directory slot which owns too many records. */
|
|
void
|
|
page_dir_split_slot(
|
|
/*================*/
|
|
page_t* page, /*!< in: index page */
|
|
page_zip_des_t* page_zip,/*!< in/out: compressed page whose
|
|
uncompressed part will be written, or NULL */
|
|
ulint slot_no)/*!< in: the directory slot */
|
|
MY_ATTRIBUTE((nonnull(1)));
|
|
/*************************************************************//**
|
|
Tries to balance the given directory slot with too few records
|
|
with the upper neighbor, so that there are at least the minimum number
|
|
of records owned by the slot; this may result in the merging of
|
|
two slots. */
|
|
void
|
|
page_dir_balance_slot(
|
|
/*==================*/
|
|
page_t* page, /*!< in/out: index page */
|
|
page_zip_des_t* page_zip,/*!< in/out: compressed page, or NULL */
|
|
ulint slot_no)/*!< in: the directory slot */
|
|
MY_ATTRIBUTE((nonnull(1)));
|
|
/**********************************************************//**
|
|
Parses a log record of a record list end or start deletion.
|
|
@return end of log record or NULL */
|
|
byte*
|
|
page_parse_delete_rec_list(
|
|
/*=======================*/
|
|
mlog_id_t type, /*!< in: MLOG_LIST_END_DELETE,
|
|
MLOG_LIST_START_DELETE,
|
|
MLOG_COMP_LIST_END_DELETE or
|
|
MLOG_COMP_LIST_START_DELETE */
|
|
byte* ptr, /*!< in: buffer */
|
|
byte* end_ptr,/*!< in: buffer end */
|
|
buf_block_t* block, /*!< in/out: buffer block or NULL */
|
|
dict_index_t* index, /*!< in: record descriptor */
|
|
mtr_t* mtr); /*!< in: mtr or NULL */
|
|
/** Parses a redo log record of creating a page.
|
|
@param[in,out] block buffer block, or NULL
|
|
@param[in] comp nonzero=compact page format
|
|
@param[in] is_rtree whether it is rtree page */
|
|
void
|
|
page_parse_create(
|
|
buf_block_t* block,
|
|
ulint comp,
|
|
bool is_rtree);
|
|
|
|
/************************************************************//**
|
|
Prints record contents including the data relevant only in
|
|
the index page context. */
|
|
void
|
|
page_rec_print(
|
|
/*===========*/
|
|
const rec_t* rec, /*!< in: physical record */
|
|
const ulint* offsets);/*!< in: record descriptor */
|
|
# ifdef UNIV_BTR_PRINT
|
|
/***************************************************************//**
|
|
This is used to print the contents of the directory for
|
|
debugging purposes. */
|
|
void
|
|
page_dir_print(
|
|
/*===========*/
|
|
page_t* page, /*!< in: index page */
|
|
ulint pr_n); /*!< in: print n first and n last entries */
|
|
/***************************************************************//**
|
|
This is used to print the contents of the page record list for
|
|
debugging purposes. */
|
|
void
|
|
page_print_list(
|
|
/*============*/
|
|
buf_block_t* block, /*!< in: index page */
|
|
dict_index_t* index, /*!< in: dictionary index of the page */
|
|
ulint pr_n); /*!< in: print n first and n last entries */
|
|
/***************************************************************//**
|
|
Prints the info in a page header. */
|
|
void
|
|
page_header_print(
|
|
/*==============*/
|
|
const page_t* page); /*!< in: index page */
|
|
/***************************************************************//**
|
|
This is used to print the contents of the page for
|
|
debugging purposes. */
|
|
void
|
|
page_print(
|
|
/*=======*/
|
|
buf_block_t* block, /*!< in: index page */
|
|
dict_index_t* index, /*!< in: dictionary index of the page */
|
|
ulint dn, /*!< in: print dn first and last entries
|
|
in directory */
|
|
ulint rn); /*!< in: print rn first and last records
|
|
in directory */
|
|
# endif /* UNIV_BTR_PRINT */
|
|
/***************************************************************//**
|
|
The following is used to validate a record on a page. This function
|
|
differs from rec_validate as it can also check the n_owned field and
|
|
the heap_no field.
|
|
@return TRUE if ok */
|
|
ibool
|
|
page_rec_validate(
|
|
/*==============*/
|
|
const rec_t* rec, /*!< in: physical record */
|
|
const ulint* offsets);/*!< in: array returned by rec_get_offsets() */
|
|
#ifdef UNIV_DEBUG
|
|
/***************************************************************//**
|
|
Checks that the first directory slot points to the infimum record and
|
|
the last to the supremum. This function is intended to track if the
|
|
bug fixed in 4.0.14 has caused corruption to users' databases. */
|
|
void
|
|
page_check_dir(
|
|
/*===========*/
|
|
const page_t* page); /*!< in: index page */
|
|
#endif /* UNIV_DEBUG */
|
|
/***************************************************************//**
|
|
This function checks the consistency of an index page when we do not
|
|
know the index. This is also resilient so that this should never crash
|
|
even if the page is total garbage.
|
|
@return TRUE if ok */
|
|
ibool
|
|
page_simple_validate_old(
|
|
/*=====================*/
|
|
const page_t* page); /*!< in: index page in ROW_FORMAT=REDUNDANT */
|
|
/***************************************************************//**
|
|
This function checks the consistency of an index page when we do not
|
|
know the index. This is also resilient so that this should never crash
|
|
even if the page is total garbage.
|
|
@return TRUE if ok */
|
|
ibool
|
|
page_simple_validate_new(
|
|
/*=====================*/
|
|
const page_t* page); /*!< in: index page in ROW_FORMAT!=REDUNDANT */
|
|
/***************************************************************//**
|
|
This function checks the consistency of an index page.
|
|
@return TRUE if ok */
|
|
ibool
|
|
page_validate(
|
|
/*==========*/
|
|
const page_t* page, /*!< in: index page */
|
|
dict_index_t* index); /*!< in: data dictionary index containing
|
|
the page record type definition */
|
|
/***************************************************************//**
|
|
Looks in the page record list for a record with the given heap number.
|
|
@return record, NULL if not found */
|
|
const rec_t*
|
|
page_find_rec_with_heap_no(
|
|
/*=======================*/
|
|
const page_t* page, /*!< in: index page */
|
|
ulint heap_no);/*!< in: heap number */
|
|
/** Get the last non-delete-marked record on a page.
|
|
@param[in] page index tree leaf page
|
|
@return the last record, not delete-marked
|
|
@retval infimum record if all records are delete-marked */
|
|
const rec_t*
|
|
page_find_rec_max_not_deleted(
|
|
const page_t* page);
|
|
|
|
/** Issue a warning when the checksum that is stored in the page is valid,
|
|
but different than the global setting innodb_checksum_algorithm.
|
|
@param[in] current_algo current checksum algorithm
|
|
@param[in] page_checksum page valid checksum
|
|
@param[in] page_id page identifier */
|
|
void
|
|
page_warn_strict_checksum(
|
|
srv_checksum_algorithm_t curr_algo,
|
|
srv_checksum_algorithm_t page_checksum,
|
|
const page_id_t& page_id);
|
|
|
|
#ifdef UNIV_MATERIALIZE
|
|
#undef UNIV_INLINE
|
|
#define UNIV_INLINE UNIV_INLINE_ORIGINAL
|
|
#endif
|
|
|
|
#endif /* !UNIV_INNOCHECKSUM */
|
|
|
|
#include "page0page.ic"
|
|
|
|
|
|
#endif
|