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Support configurable WAL segment size.
PostgreSQL 11 introduces configurable WAL segment sizes, from 1MB to 1GB. There are two areas that needed to be updated to support this: building the archive-get queue and checking that WAL has been archived after a backup. Both operations require the WAL segment size to properly build a list. Checking the archive after a backup is still implemented in Perl and has an active database connection, so just get the WAL segment size from the database. The archive-get command does not have a connection to the database, so get the WAL segment size from pg_control instead. This requires a deeper inspection of pg_control than has been done in the past, so it seemed best to copy the relevant data structures from each version of PostgreSQL and build a generic interface layer to address them. While this approach is a bit verbose, it has the advantage of being relatively simple, and can easily be updated for new versions of PostgreSQL. Since the integration tests generate pg_control files for testing, teach Perl how to generate files with the correct offsets for both 32-bit and 64-bit architectures.
This commit is contained in:
David Steele
203
src/postgres/interface/v083.auto.c
Normal file
203
src/postgres/interface/v083.auto.c
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@ -0,0 +1,203 @@
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/***********************************************************************************************************************************
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PostgreSQL 8.3 Types
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***********************************************************************************************************************************/
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/***********************************************************************************************************************************
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Types from src/include/c.h
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***********************************************************************************************************************************/
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typedef int64_t int64;
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typedef uint32_t uint32;
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typedef uint64_t uint64;
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typedef uint32 TransactionId;
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/* MultiXactId must be equivalent to TransactionId, to fit in t_xmax */
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typedef TransactionId MultiXactId;
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typedef uint32 MultiXactOffset;
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/***********************************************************************************************************************************
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Types from src/include/postgres_ext.h
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***********************************************************************************************************************************/
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/*
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* Object ID is a fundamental type in Postgres.
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*/
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typedef unsigned int Oid;
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/***********************************************************************************************************************************
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Types from src/include/utils/pg_crc32.h
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***********************************************************************************************************************************/
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typedef uint32 pg_crc32;
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/***********************************************************************************************************************************
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Types from src/include/access/xlogdefs.h
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***********************************************************************************************************************************/
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/*
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* Pointer to a location in the XLOG. These pointers are 64 bits wide,
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* because we don't want them ever to overflow.
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*
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* NOTE: xrecoff == 0 is used to indicate an invalid pointer. This is OK
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* because we use page headers in the XLOG, so no XLOG record can start
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* right at the beginning of a file.
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*
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* NOTE: the "log file number" is somewhat misnamed, since the actual files
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* making up the XLOG are much smaller than 4Gb. Each actual file is an
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* XLogSegSize-byte "segment" of a logical log file having the indicated
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* xlogid. The log file number and segment number together identify a
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* physical XLOG file. Segment number and offset within the physical file
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* are computed from xrecoff div and mod XLogSegSize.
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*/
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typedef struct XLogRecPtr
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{
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uint32 xlogid; /* log file #, 0 based */
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uint32 xrecoff; /* byte offset of location in log file */
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} XLogRecPtr;
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/*
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* TimeLineID (TLI) - identifies different database histories to prevent
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* confusion after restoring a prior state of a database installation.
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* TLI does not change in a normal stop/restart of the database (including
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* crash-and-recover cases); but we must assign a new TLI after doing
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* a recovery to a prior state, a/k/a point-in-time recovery. This makes
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* the new WAL logfile sequence we generate distinguishable from the
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* sequence that was generated in the previous incarnation.
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*/
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typedef uint32 TimeLineID;
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/***********************************************************************************************************************************
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Types from src/include/catalog/catversion.h
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***********************************************************************************************************************************/
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/*
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* We could use anything we wanted for version numbers, but I recommend
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* following the "YYYYMMDDN" style often used for DNS zone serial numbers.
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* YYYYMMDD are the date of the change, and N is the number of the change
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* on that day. (Hopefully we'll never commit ten independent sets of
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* catalog changes on the same day...)
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*/
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/* yyyymmddN */
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#define CATALOG_VERSION_NO 200711281
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/***********************************************************************************************************************************
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Types from src/include/catalog/pg_control.h
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***********************************************************************************************************************************/
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/* Version identifier for this pg_control format */
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#define PG_CONTROL_VERSION 833
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/*
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* Body of CheckPoint XLOG records. This is declared here because we keep
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* a copy of the latest one in pg_control for possible disaster recovery.
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*/
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typedef struct CheckPoint
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{
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XLogRecPtr redo; /* next RecPtr available when we began to
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* create CheckPoint (i.e. REDO start point) */
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TimeLineID ThisTimeLineID; /* current TLI */
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uint32 nextXidEpoch; /* higher-order bits of nextXid */
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TransactionId nextXid; /* next free XID */
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Oid nextOid; /* next free OID */
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MultiXactId nextMulti; /* next free MultiXactId */
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MultiXactOffset nextMultiOffset; /* next free MultiXact offset */
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time_t time; /* time stamp of checkpoint */
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} CheckPoint;
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/* System status indicator */
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typedef enum DBState
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{
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DB_STARTUP = 0,
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DB_SHUTDOWNED,
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DB_SHUTDOWNING,
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DB_IN_CRASH_RECOVERY,
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DB_IN_ARCHIVE_RECOVERY,
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DB_IN_PRODUCTION
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} DBState;
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#define LOCALE_NAME_BUFLEN 128
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/*
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* Contents of pg_control.
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*
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* NOTE: try to keep this under 512 bytes so that it will fit on one physical
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* sector of typical disk drives. This reduces the odds of corruption due to
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* power failure midway through a write. Currently it fits comfortably,
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* but we could probably reduce LOCALE_NAME_BUFLEN if things get tight.
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*/
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typedef struct ControlFileData
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{
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/*
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* Unique system identifier --- to ensure we match up xlog files with the
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* installation that produced them.
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*/
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uint64 system_identifier;
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/*
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* Version identifier information. Keep these fields at the same offset,
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* especially pg_control_version; they won't be real useful if they move
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* around. (For historical reasons they must be 8 bytes into the file
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* rather than immediately at the front.)
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*
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* pg_control_version identifies the format of pg_control itself.
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* catalog_version_no identifies the format of the system catalogs.
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*
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* There are additional version identifiers in individual files; for
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* example, WAL logs contain per-page magic numbers that can serve as
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* version cues for the WAL log.
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*/
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uint32 pg_control_version; /* PG_CONTROL_VERSION */
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uint32 catalog_version_no; /* see catversion.h */
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/*
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* System status data
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*/
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DBState state; /* see enum above */
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time_t time; /* time stamp of last pg_control update */
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XLogRecPtr checkPoint; /* last check point record ptr */
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XLogRecPtr prevCheckPoint; /* previous check point record ptr */
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CheckPoint checkPointCopy; /* copy of last check point record */
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XLogRecPtr minRecoveryPoint; /* must replay xlog to here */
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/*
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* This data is used to check for hardware-architecture compatibility of
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* the database and the backend executable. We need not check endianness
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* explicitly, since the pg_control version will surely look wrong to a
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* machine of different endianness, but we do need to worry about MAXALIGN
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* and floating-point format. (Note: storage layout nominally also
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* depends on SHORTALIGN and INTALIGN, but in practice these are the same
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* on all architectures of interest.)
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*
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* Testing just one double value is not a very bulletproof test for
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* floating-point compatibility, but it will catch most cases.
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*/
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uint32 maxAlign; /* alignment requirement for tuples */
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double floatFormat; /* constant 1234567.0 */
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#define FLOATFORMAT_VALUE 1234567.0
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/*
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* This data is used to make sure that configuration of this database is
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* compatible with the backend executable.
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*/
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uint32 blcksz; /* data block size for this DB */
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uint32 relseg_size; /* blocks per segment of large relation */
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uint32 xlog_blcksz; /* block size within WAL files */
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uint32 xlog_seg_size; /* size of each WAL segment */
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uint32 nameDataLen; /* catalog name field width */
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uint32 indexMaxKeys; /* max number of columns in an index */
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uint32 toast_max_chunk_size; /* chunk size in TOAST tables */
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/* flag indicating internal format of timestamp, interval, time */
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uint32 enableIntTimes; /* int64 storage enabled? */
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/* active locales */
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uint32 localeBuflen;
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char lc_collate[LOCALE_NAME_BUFLEN];
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char lc_ctype[LOCALE_NAME_BUFLEN];
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/* CRC of all above ... MUST BE LAST! */
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pg_crc32 crc;
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} ControlFileData;
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81
src/postgres/interface/v083.c
Normal file
81
src/postgres/interface/v083.c
Normal file
@ -0,0 +1,81 @@
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/***********************************************************************************************************************************
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PostgreSQL 8.3 Interface
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||||
***********************************************************************************************************************************/
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#include "common/debug.h"
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#include "common/log.h"
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#include "postgres/interface/v083.h"
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/***********************************************************************************************************************************
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Include PostgreSQL Types
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***********************************************************************************************************************************/
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#include "postgres/interface/v083.auto.c"
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/***********************************************************************************************************************************
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Is the control file for this version of PostgreSQL?
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***********************************************************************************************************************************/
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bool
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pgInterfaceIs083(const Buffer *controlFile)
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{
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FUNCTION_TEST_BEGIN();
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FUNCTION_TEST_PARAM(BUFFER, controlFile);
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FUNCTION_TEST_ASSERT(controlFile != NULL);
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FUNCTION_TEST_END();
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ControlFileData *controlData = (ControlFileData *)bufPtr(controlFile);
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FUNCTION_TEST_RESULT(
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BOOL, controlData->pg_control_version == PG_CONTROL_VERSION && controlData->catalog_version_no == CATALOG_VERSION_NO);
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}
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/***********************************************************************************************************************************
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Get information from pg_control in a common format
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***********************************************************************************************************************************/
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PgControl
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pgInterfaceControl083(const Buffer *controlFile)
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{
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FUNCTION_DEBUG_BEGIN(logLevelTrace);
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FUNCTION_DEBUG_PARAM(BUFFER, controlFile);
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FUNCTION_TEST_ASSERT(controlFile != NULL);
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FUNCTION_TEST_ASSERT(pgInterfaceIs083(controlFile));
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FUNCTION_DEBUG_END();
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PgControl result = {0};
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ControlFileData *controlData = (ControlFileData *)bufPtr(controlFile);
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result.systemId = controlData->system_identifier;
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result.controlVersion = controlData->pg_control_version;
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result.catalogVersion = controlData->catalog_version_no;
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result.pageSize = controlData->blcksz;
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result.walSegmentSize = controlData->xlog_seg_size;
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FUNCTION_DEBUG_RESULT(PG_CONTROL, result);
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}
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/***********************************************************************************************************************************
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Create pg_control for testing
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***********************************************************************************************************************************/
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#ifdef DEBUG
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void
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pgInterfaceControlTest083(PgControl pgControl, Buffer *buffer)
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{
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FUNCTION_TEST_BEGIN();
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FUNCTION_TEST_PARAM(PG_CONTROL, pgControl);
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FUNCTION_TEST_END();
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ControlFileData *controlData = (ControlFileData *)bufPtr(buffer);
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controlData->system_identifier = pgControl.systemId;
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controlData->pg_control_version = pgControl.controlVersion == 0 ? PG_CONTROL_VERSION : pgControl.controlVersion;
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controlData->catalog_version_no = pgControl.catalogVersion == 0 ? CATALOG_VERSION_NO : pgControl.catalogVersion;
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controlData->blcksz = pgControl.pageSize;
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controlData->xlog_seg_size = pgControl.walSegmentSize;
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FUNCTION_TEST_RESULT_VOID();
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}
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#endif
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22
src/postgres/interface/v083.h
Normal file
22
src/postgres/interface/v083.h
Normal file
@ -0,0 +1,22 @@
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||||
/***********************************************************************************************************************************
|
||||
PostgreSQL 8.3 Interface
|
||||
***********************************************************************************************************************************/
|
||||
#ifndef POSTGRES_INTERFACE_INTERFACE083_H
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||||
#define POSTGRES_INTERFACE_INTERFACE083_H
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||||
|
||||
#include "postgres/interface.h"
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||||
|
||||
/***********************************************************************************************************************************
|
||||
Functions
|
||||
***********************************************************************************************************************************/
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||||
bool pgInterfaceIs083(const Buffer *controlFile);
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PgControl pgInterfaceControl083(const Buffer *controlFile);
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||||
|
||||
/***********************************************************************************************************************************
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||||
Test Functions
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||||
***********************************************************************************************************************************/
|
||||
#ifdef DEBUG
|
||||
void pgInterfaceControlTest083(PgControl pgControl, Buffer *buffer);
|
||||
#endif
|
||||
|
||||
#endif
|
||||
208
src/postgres/interface/v084.auto.c
Normal file
208
src/postgres/interface/v084.auto.c
Normal file
@ -0,0 +1,208 @@
|
||||
/***********************************************************************************************************************************
|
||||
PostgreSQL 8.4 Types
|
||||
***********************************************************************************************************************************/
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Types from src/include/c.h
|
||||
***********************************************************************************************************************************/
|
||||
typedef int64_t int64;
|
||||
typedef uint32_t uint32;
|
||||
typedef uint64_t uint64;
|
||||
|
||||
typedef uint32 TransactionId;
|
||||
|
||||
/* MultiXactId must be equivalent to TransactionId, to fit in t_xmax */
|
||||
typedef TransactionId MultiXactId;
|
||||
|
||||
typedef uint32 MultiXactOffset;
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Types from src/include/pgtime.h
|
||||
***********************************************************************************************************************************/
|
||||
/*
|
||||
* The API of this library is generally similar to the corresponding
|
||||
* C library functions, except that we use pg_time_t which (we hope) is
|
||||
* 64 bits wide, and which is most definitely signed not unsigned.
|
||||
*/
|
||||
typedef int64 pg_time_t;
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Types from src/include/postgres_ext.h
|
||||
***********************************************************************************************************************************/
|
||||
/*
|
||||
* Object ID is a fundamental type in Postgres.
|
||||
*/
|
||||
typedef unsigned int Oid;
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Types from src/include/utils/pg_crc32.h
|
||||
***********************************************************************************************************************************/
|
||||
typedef uint32 pg_crc32;
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Types from src/include/access/xlogdefs.h
|
||||
***********************************************************************************************************************************/
|
||||
/*
|
||||
* Pointer to a location in the XLOG. These pointers are 64 bits wide,
|
||||
* because we don't want them ever to overflow.
|
||||
*
|
||||
* NOTE: xrecoff == 0 is used to indicate an invalid pointer. This is OK
|
||||
* because we use page headers in the XLOG, so no XLOG record can start
|
||||
* right at the beginning of a file.
|
||||
*
|
||||
* NOTE: the "log file number" is somewhat misnamed, since the actual files
|
||||
* making up the XLOG are much smaller than 4Gb. Each actual file is an
|
||||
* XLogSegSize-byte "segment" of a logical log file having the indicated
|
||||
* xlogid. The log file number and segment number together identify a
|
||||
* physical XLOG file. Segment number and offset within the physical file
|
||||
* are computed from xrecoff div and mod XLogSegSize.
|
||||
*/
|
||||
typedef struct XLogRecPtr
|
||||
{
|
||||
uint32 xlogid; /* log file #, 0 based */
|
||||
uint32 xrecoff; /* byte offset of location in log file */
|
||||
} XLogRecPtr;
|
||||
|
||||
/*
|
||||
* TimeLineID (TLI) - identifies different database histories to prevent
|
||||
* confusion after restoring a prior state of a database installation.
|
||||
* TLI does not change in a normal stop/restart of the database (including
|
||||
* crash-and-recover cases); but we must assign a new TLI after doing
|
||||
* a recovery to a prior state, a/k/a point-in-time recovery. This makes
|
||||
* the new WAL logfile sequence we generate distinguishable from the
|
||||
* sequence that was generated in the previous incarnation.
|
||||
*/
|
||||
typedef uint32 TimeLineID;
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Types from src/include/catalog/catversion.h
|
||||
***********************************************************************************************************************************/
|
||||
/*
|
||||
* We could use anything we wanted for version numbers, but I recommend
|
||||
* following the "YYYYMMDDN" style often used for DNS zone serial numbers.
|
||||
* YYYYMMDD are the date of the change, and N is the number of the change
|
||||
* on that day. (Hopefully we'll never commit ten independent sets of
|
||||
* catalog changes on the same day...)
|
||||
*/
|
||||
|
||||
/* yyyymmddN */
|
||||
#define CATALOG_VERSION_NO 200904091
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Types from src/include/catalog/pg_control.h
|
||||
***********************************************************************************************************************************/
|
||||
/* Version identifier for this pg_control format */
|
||||
#define PG_CONTROL_VERSION 843
|
||||
|
||||
/*
|
||||
* Body of CheckPoint XLOG records. This is declared here because we keep
|
||||
* a copy of the latest one in pg_control for possible disaster recovery.
|
||||
*/
|
||||
typedef struct CheckPoint
|
||||
{
|
||||
XLogRecPtr redo; /* next RecPtr available when we began to
|
||||
* create CheckPoint (i.e. REDO start point) */
|
||||
TimeLineID ThisTimeLineID; /* current TLI */
|
||||
uint32 nextXidEpoch; /* higher-order bits of nextXid */
|
||||
TransactionId nextXid; /* next free XID */
|
||||
Oid nextOid; /* next free OID */
|
||||
MultiXactId nextMulti; /* next free MultiXactId */
|
||||
MultiXactOffset nextMultiOffset; /* next free MultiXact offset */
|
||||
pg_time_t time; /* time stamp of checkpoint */
|
||||
} CheckPoint;
|
||||
|
||||
/* System status indicator */
|
||||
typedef enum DBState
|
||||
{
|
||||
DB_STARTUP = 0,
|
||||
DB_SHUTDOWNED,
|
||||
DB_SHUTDOWNING,
|
||||
DB_IN_CRASH_RECOVERY,
|
||||
DB_IN_ARCHIVE_RECOVERY,
|
||||
DB_IN_PRODUCTION
|
||||
} DBState;
|
||||
|
||||
/*
|
||||
* Contents of pg_control.
|
||||
*
|
||||
* NOTE: try to keep this under 512 bytes so that it will fit on one physical
|
||||
* sector of typical disk drives. This reduces the odds of corruption due to
|
||||
* power failure midway through a write.
|
||||
*/
|
||||
typedef struct ControlFileData
|
||||
{
|
||||
/*
|
||||
* Unique system identifier --- to ensure we match up xlog files with the
|
||||
* installation that produced them.
|
||||
*/
|
||||
uint64 system_identifier;
|
||||
|
||||
/*
|
||||
* Version identifier information. Keep these fields at the same offset,
|
||||
* especially pg_control_version; they won't be real useful if they move
|
||||
* around. (For historical reasons they must be 8 bytes into the file
|
||||
* rather than immediately at the front.)
|
||||
*
|
||||
* pg_control_version identifies the format of pg_control itself.
|
||||
* catalog_version_no identifies the format of the system catalogs.
|
||||
*
|
||||
* There are additional version identifiers in individual files; for
|
||||
* example, WAL logs contain per-page magic numbers that can serve as
|
||||
* version cues for the WAL log.
|
||||
*/
|
||||
uint32 pg_control_version; /* PG_CONTROL_VERSION */
|
||||
uint32 catalog_version_no; /* see catversion.h */
|
||||
|
||||
/*
|
||||
* System status data
|
||||
*/
|
||||
DBState state; /* see enum above */
|
||||
pg_time_t time; /* time stamp of last pg_control update */
|
||||
XLogRecPtr checkPoint; /* last check point record ptr */
|
||||
XLogRecPtr prevCheckPoint; /* previous check point record ptr */
|
||||
|
||||
CheckPoint checkPointCopy; /* copy of last check point record */
|
||||
|
||||
XLogRecPtr minRecoveryPoint; /* must replay xlog to here */
|
||||
|
||||
/*
|
||||
* This data is used to check for hardware-architecture compatibility of
|
||||
* the database and the backend executable. We need not check endianness
|
||||
* explicitly, since the pg_control version will surely look wrong to a
|
||||
* machine of different endianness, but we do need to worry about MAXALIGN
|
||||
* and floating-point format. (Note: storage layout nominally also
|
||||
* depends on SHORTALIGN and INTALIGN, but in practice these are the same
|
||||
* on all architectures of interest.)
|
||||
*
|
||||
* Testing just one double value is not a very bulletproof test for
|
||||
* floating-point compatibility, but it will catch most cases.
|
||||
*/
|
||||
uint32 maxAlign; /* alignment requirement for tuples */
|
||||
double floatFormat; /* constant 1234567.0 */
|
||||
#define FLOATFORMAT_VALUE 1234567.0
|
||||
|
||||
/*
|
||||
* This data is used to make sure that configuration of this database is
|
||||
* compatible with the backend executable.
|
||||
*/
|
||||
uint32 blcksz; /* data block size for this DB */
|
||||
uint32 relseg_size; /* blocks per segment of large relation */
|
||||
|
||||
uint32 xlog_blcksz; /* block size within WAL files */
|
||||
uint32 xlog_seg_size; /* size of each WAL segment */
|
||||
|
||||
uint32 nameDataLen; /* catalog name field width */
|
||||
uint32 indexMaxKeys; /* max number of columns in an index */
|
||||
|
||||
uint32 toast_max_chunk_size; /* chunk size in TOAST tables */
|
||||
|
||||
/* flag indicating internal format of timestamp, interval, time */
|
||||
bool enableIntTimes; /* int64 storage enabled? */
|
||||
|
||||
/* flags indicating pass-by-value status of various types */
|
||||
bool float4ByVal; /* float4 pass-by-value? */
|
||||
bool float8ByVal; /* float8, int8, etc pass-by-value? */
|
||||
|
||||
/* CRC of all above ... MUST BE LAST! */
|
||||
pg_crc32 crc;
|
||||
} ControlFileData;
|
||||
81
src/postgres/interface/v084.c
Normal file
81
src/postgres/interface/v084.c
Normal file
@ -0,0 +1,81 @@
|
||||
/***********************************************************************************************************************************
|
||||
PostgreSQL 8.4 Interface
|
||||
***********************************************************************************************************************************/
|
||||
#include "common/debug.h"
|
||||
#include "common/log.h"
|
||||
#include "postgres/interface/v084.h"
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Include PostgreSQL Types
|
||||
***********************************************************************************************************************************/
|
||||
#include "postgres/interface/v084.auto.c"
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Is the control file for this version of PostgreSQL?
|
||||
***********************************************************************************************************************************/
|
||||
bool
|
||||
pgInterfaceIs084(const Buffer *controlFile)
|
||||
{
|
||||
FUNCTION_TEST_BEGIN();
|
||||
FUNCTION_TEST_PARAM(BUFFER, controlFile);
|
||||
|
||||
FUNCTION_TEST_ASSERT(controlFile != NULL);
|
||||
FUNCTION_TEST_END();
|
||||
|
||||
ControlFileData *controlData = (ControlFileData *)bufPtr(controlFile);
|
||||
|
||||
FUNCTION_TEST_RESULT(
|
||||
BOOL, controlData->pg_control_version == PG_CONTROL_VERSION && controlData->catalog_version_no == CATALOG_VERSION_NO);
|
||||
}
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Get information from pg_control in a common format
|
||||
***********************************************************************************************************************************/
|
||||
PgControl
|
||||
pgInterfaceControl084(const Buffer *controlFile)
|
||||
{
|
||||
FUNCTION_DEBUG_BEGIN(logLevelTrace);
|
||||
FUNCTION_DEBUG_PARAM(BUFFER, controlFile);
|
||||
|
||||
FUNCTION_TEST_ASSERT(controlFile != NULL);
|
||||
FUNCTION_TEST_ASSERT(pgInterfaceIs084(controlFile));
|
||||
FUNCTION_DEBUG_END();
|
||||
|
||||
PgControl result = {0};
|
||||
ControlFileData *controlData = (ControlFileData *)bufPtr(controlFile);
|
||||
|
||||
result.systemId = controlData->system_identifier;
|
||||
result.controlVersion = controlData->pg_control_version;
|
||||
result.catalogVersion = controlData->catalog_version_no;
|
||||
|
||||
result.pageSize = controlData->blcksz;
|
||||
result.walSegmentSize = controlData->xlog_seg_size;
|
||||
|
||||
FUNCTION_DEBUG_RESULT(PG_CONTROL, result);
|
||||
}
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Create pg_control for testing
|
||||
***********************************************************************************************************************************/
|
||||
#ifdef DEBUG
|
||||
|
||||
void
|
||||
pgInterfaceControlTest084(PgControl pgControl, Buffer *buffer)
|
||||
{
|
||||
FUNCTION_TEST_BEGIN();
|
||||
FUNCTION_TEST_PARAM(PG_CONTROL, pgControl);
|
||||
FUNCTION_TEST_END();
|
||||
|
||||
ControlFileData *controlData = (ControlFileData *)bufPtr(buffer);
|
||||
|
||||
controlData->system_identifier = pgControl.systemId;
|
||||
controlData->pg_control_version = pgControl.controlVersion == 0 ? PG_CONTROL_VERSION : pgControl.controlVersion;
|
||||
controlData->catalog_version_no = pgControl.catalogVersion == 0 ? CATALOG_VERSION_NO : pgControl.catalogVersion;
|
||||
|
||||
controlData->blcksz = pgControl.pageSize;
|
||||
controlData->xlog_seg_size = pgControl.walSegmentSize;
|
||||
|
||||
FUNCTION_TEST_RESULT_VOID();
|
||||
}
|
||||
|
||||
#endif
|
||||
22
src/postgres/interface/v084.h
Normal file
22
src/postgres/interface/v084.h
Normal file
@ -0,0 +1,22 @@
|
||||
/***********************************************************************************************************************************
|
||||
PostgreSQL 8.4 Interface
|
||||
***********************************************************************************************************************************/
|
||||
#ifndef POSTGRES_INTERFACE_INTERFACE084_H
|
||||
#define POSTGRES_INTERFACE_INTERFACE084_H
|
||||
|
||||
#include "postgres/interface.h"
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Functions
|
||||
***********************************************************************************************************************************/
|
||||
bool pgInterfaceIs084(const Buffer *controlFile);
|
||||
PgControl pgInterfaceControl084(const Buffer *controlFile);
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Test Functions
|
||||
***********************************************************************************************************************************/
|
||||
#ifdef DEBUG
|
||||
void pgInterfaceControlTest084(PgControl pgControl, Buffer *buffer);
|
||||
#endif
|
||||
|
||||
#endif
|
||||
252
src/postgres/interface/v090.auto.c
Normal file
252
src/postgres/interface/v090.auto.c
Normal file
@ -0,0 +1,252 @@
|
||||
/***********************************************************************************************************************************
|
||||
PostgreSQL 9.0 Types
|
||||
***********************************************************************************************************************************/
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Types from src/include/c.h
|
||||
***********************************************************************************************************************************/
|
||||
typedef int64_t int64;
|
||||
typedef uint32_t uint32;
|
||||
typedef uint64_t uint64;
|
||||
|
||||
typedef uint32 TransactionId;
|
||||
|
||||
/* MultiXactId must be equivalent to TransactionId, to fit in t_xmax */
|
||||
typedef TransactionId MultiXactId;
|
||||
|
||||
typedef uint32 MultiXactOffset;
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Types from src/include/pgtime.h
|
||||
***********************************************************************************************************************************/
|
||||
/*
|
||||
* The API of this library is generally similar to the corresponding
|
||||
* C library functions, except that we use pg_time_t which (we hope) is
|
||||
* 64 bits wide, and which is most definitely signed not unsigned.
|
||||
*/
|
||||
typedef int64 pg_time_t;
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Types from src/include/postgres_ext.h
|
||||
***********************************************************************************************************************************/
|
||||
/*
|
||||
* Object ID is a fundamental type in Postgres.
|
||||
*/
|
||||
typedef unsigned int Oid;
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Types from src/include/utils/pg_crc32.h
|
||||
***********************************************************************************************************************************/
|
||||
typedef uint32 pg_crc32;
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Types from src/include/access/xlogdefs.h
|
||||
***********************************************************************************************************************************/
|
||||
/*
|
||||
* Pointer to a location in the XLOG. These pointers are 64 bits wide,
|
||||
* because we don't want them ever to overflow.
|
||||
*
|
||||
* NOTE: xrecoff == 0 is used to indicate an invalid pointer. This is OK
|
||||
* because we use page headers in the XLOG, so no XLOG record can start
|
||||
* right at the beginning of a file.
|
||||
*
|
||||
* NOTE: the "log file number" is somewhat misnamed, since the actual files
|
||||
* making up the XLOG are much smaller than 4Gb. Each actual file is an
|
||||
* XLogSegSize-byte "segment" of a logical log file having the indicated
|
||||
* xlogid. The log file number and segment number together identify a
|
||||
* physical XLOG file. Segment number and offset within the physical file
|
||||
* are computed from xrecoff div and mod XLogSegSize.
|
||||
*/
|
||||
typedef struct XLogRecPtr
|
||||
{
|
||||
uint32 xlogid; /* log file #, 0 based */
|
||||
uint32 xrecoff; /* byte offset of location in log file */
|
||||
} XLogRecPtr;
|
||||
|
||||
/*
|
||||
* TimeLineID (TLI) - identifies different database histories to prevent
|
||||
* confusion after restoring a prior state of a database installation.
|
||||
* TLI does not change in a normal stop/restart of the database (including
|
||||
* crash-and-recover cases); but we must assign a new TLI after doing
|
||||
* a recovery to a prior state, a/k/a point-in-time recovery. This makes
|
||||
* the new WAL logfile sequence we generate distinguishable from the
|
||||
* sequence that was generated in the previous incarnation.
|
||||
*/
|
||||
typedef uint32 TimeLineID;
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Types from src/include/catalog/catversion.h
|
||||
***********************************************************************************************************************************/
|
||||
/*
|
||||
* We could use anything we wanted for version numbers, but I recommend
|
||||
* following the "YYYYMMDDN" style often used for DNS zone serial numbers.
|
||||
* YYYYMMDD are the date of the change, and N is the number of the change
|
||||
* on that day. (Hopefully we'll never commit ten independent sets of
|
||||
* catalog changes on the same day...)
|
||||
*/
|
||||
|
||||
/* yyyymmddN */
|
||||
#define CATALOG_VERSION_NO 201008051
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Types from src/include/catalog/pg_control.h
|
||||
***********************************************************************************************************************************/
|
||||
/* Version identifier for this pg_control format */
|
||||
#define PG_CONTROL_VERSION 903
|
||||
|
||||
/*
|
||||
* Body of CheckPoint XLOG records. This is declared here because we keep
|
||||
* a copy of the latest one in pg_control for possible disaster recovery.
|
||||
* Changing this struct requires a PG_CONTROL_VERSION bump.
|
||||
*/
|
||||
typedef struct CheckPoint
|
||||
{
|
||||
XLogRecPtr redo; /* next RecPtr available when we began to
|
||||
* create CheckPoint (i.e. REDO start point) */
|
||||
TimeLineID ThisTimeLineID; /* current TLI */
|
||||
uint32 nextXidEpoch; /* higher-order bits of nextXid */
|
||||
TransactionId nextXid; /* next free XID */
|
||||
Oid nextOid; /* next free OID */
|
||||
MultiXactId nextMulti; /* next free MultiXactId */
|
||||
MultiXactOffset nextMultiOffset; /* next free MultiXact offset */
|
||||
TransactionId oldestXid; /* cluster-wide minimum datfrozenxid */
|
||||
Oid oldestXidDB; /* database with minimum datfrozenxid */
|
||||
pg_time_t time; /* time stamp of checkpoint */
|
||||
|
||||
/*
|
||||
* Oldest XID still running. This is only needed to initialize hot standby
|
||||
* mode from an online checkpoint, so we only bother calculating this for
|
||||
* online checkpoints and only when wal_level is hot_standby. Otherwise it's
|
||||
* set to InvalidTransactionId.
|
||||
*/
|
||||
TransactionId oldestActiveXid;
|
||||
} CheckPoint;
|
||||
|
||||
/*
|
||||
* System status indicator. Note this is stored in pg_control; if you change
|
||||
* it, you must bump PG_CONTROL_VERSION
|
||||
*/
|
||||
typedef enum DBState
|
||||
{
|
||||
DB_STARTUP = 0,
|
||||
DB_SHUTDOWNED,
|
||||
DB_SHUTDOWNED_IN_RECOVERY,
|
||||
DB_SHUTDOWNING,
|
||||
DB_IN_CRASH_RECOVERY,
|
||||
DB_IN_ARCHIVE_RECOVERY,
|
||||
DB_IN_PRODUCTION
|
||||
} DBState;
|
||||
|
||||
/*
|
||||
* Contents of pg_control.
|
||||
*
|
||||
* NOTE: try to keep this under 512 bytes so that it will fit on one physical
|
||||
* sector of typical disk drives. This reduces the odds of corruption due to
|
||||
* power failure midway through a write.
|
||||
*/
|
||||
typedef struct ControlFileData
|
||||
{
|
||||
/*
|
||||
* Unique system identifier --- to ensure we match up xlog files with the
|
||||
* installation that produced them.
|
||||
*/
|
||||
uint64 system_identifier;
|
||||
|
||||
/*
|
||||
* Version identifier information. Keep these fields at the same offset,
|
||||
* especially pg_control_version; they won't be real useful if they move
|
||||
* around. (For historical reasons they must be 8 bytes into the file
|
||||
* rather than immediately at the front.)
|
||||
*
|
||||
* pg_control_version identifies the format of pg_control itself.
|
||||
* catalog_version_no identifies the format of the system catalogs.
|
||||
*
|
||||
* There are additional version identifiers in individual files; for
|
||||
* example, WAL logs contain per-page magic numbers that can serve as
|
||||
* version cues for the WAL log.
|
||||
*/
|
||||
uint32 pg_control_version; /* PG_CONTROL_VERSION */
|
||||
uint32 catalog_version_no; /* see catversion.h */
|
||||
|
||||
/*
|
||||
* System status data
|
||||
*/
|
||||
DBState state; /* see enum above */
|
||||
pg_time_t time; /* time stamp of last pg_control update */
|
||||
XLogRecPtr checkPoint; /* last check point record ptr */
|
||||
XLogRecPtr prevCheckPoint; /* previous check point record ptr */
|
||||
|
||||
CheckPoint checkPointCopy; /* copy of last check point record */
|
||||
|
||||
/*
|
||||
* These two values determine the minimum point we must recover up to
|
||||
* before starting up:
|
||||
*
|
||||
* minRecoveryPoint is updated to the latest replayed LSN whenever we
|
||||
* flush a data change during archive recovery. That guards against
|
||||
* starting archive recovery, aborting it, and restarting with an earlier
|
||||
* stop location. If we've already flushed data changes from WAL record X
|
||||
* to disk, we mustn't start up until we reach X again. Zero when not
|
||||
* doing archive recovery.
|
||||
*
|
||||
* backupStartPoint is the redo pointer of the backup start checkpoint, if
|
||||
* we are recovering from an online backup and haven't reached the end of
|
||||
* backup yet. It is reset to zero when the end of backup is reached, and
|
||||
* we mustn't start up before that. A boolean would suffice otherwise, but
|
||||
* we use the redo pointer as a cross-check when we see an end-of-backup
|
||||
* record, to make sure the end-of-backup record corresponds the base
|
||||
* backup we're recovering from.
|
||||
*/
|
||||
XLogRecPtr minRecoveryPoint;
|
||||
XLogRecPtr backupStartPoint;
|
||||
|
||||
/*
|
||||
* Parameter settings that determine if the WAL can be used for archival
|
||||
* or hot standby.
|
||||
*/
|
||||
int wal_level;
|
||||
int MaxConnections;
|
||||
int max_prepared_xacts;
|
||||
int max_locks_per_xact;
|
||||
|
||||
/*
|
||||
* This data is used to check for hardware-architecture compatibility of
|
||||
* the database and the backend executable. We need not check endianness
|
||||
* explicitly, since the pg_control version will surely look wrong to a
|
||||
* machine of different endianness, but we do need to worry about MAXALIGN
|
||||
* and floating-point format. (Note: storage layout nominally also
|
||||
* depends on SHORTALIGN and INTALIGN, but in practice these are the same
|
||||
* on all architectures of interest.)
|
||||
*
|
||||
* Testing just one double value is not a very bulletproof test for
|
||||
* floating-point compatibility, but it will catch most cases.
|
||||
*/
|
||||
uint32 maxAlign; /* alignment requirement for tuples */
|
||||
double floatFormat; /* constant 1234567.0 */
|
||||
#define FLOATFORMAT_VALUE 1234567.0
|
||||
|
||||
/*
|
||||
* This data is used to make sure that configuration of this database is
|
||||
* compatible with the backend executable.
|
||||
*/
|
||||
uint32 blcksz; /* data block size for this DB */
|
||||
uint32 relseg_size; /* blocks per segment of large relation */
|
||||
|
||||
uint32 xlog_blcksz; /* block size within WAL files */
|
||||
uint32 xlog_seg_size; /* size of each WAL segment */
|
||||
|
||||
uint32 nameDataLen; /* catalog name field width */
|
||||
uint32 indexMaxKeys; /* max number of columns in an index */
|
||||
|
||||
uint32 toast_max_chunk_size; /* chunk size in TOAST tables */
|
||||
|
||||
/* flag indicating internal format of timestamp, interval, time */
|
||||
bool enableIntTimes; /* int64 storage enabled? */
|
||||
|
||||
/* flags indicating pass-by-value status of various types */
|
||||
bool float4ByVal; /* float4 pass-by-value? */
|
||||
bool float8ByVal; /* float8, int8, etc pass-by-value? */
|
||||
|
||||
/* CRC of all above ... MUST BE LAST! */
|
||||
pg_crc32 crc;
|
||||
} ControlFileData;
|
||||
81
src/postgres/interface/v090.c
Normal file
81
src/postgres/interface/v090.c
Normal file
@ -0,0 +1,81 @@
|
||||
/***********************************************************************************************************************************
|
||||
PostgreSQL 9.0 Interface
|
||||
***********************************************************************************************************************************/
|
||||
#include "common/debug.h"
|
||||
#include "common/log.h"
|
||||
#include "postgres/interface/v090.h"
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Include PostgreSQL Types
|
||||
***********************************************************************************************************************************/
|
||||
#include "postgres/interface/v090.auto.c"
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Is the control file for this version of PostgreSQL?
|
||||
***********************************************************************************************************************************/
|
||||
bool
|
||||
pgInterfaceIs090(const Buffer *controlFile)
|
||||
{
|
||||
FUNCTION_TEST_BEGIN();
|
||||
FUNCTION_TEST_PARAM(BUFFER, controlFile);
|
||||
|
||||
FUNCTION_TEST_ASSERT(controlFile != NULL);
|
||||
FUNCTION_TEST_END();
|
||||
|
||||
ControlFileData *controlData = (ControlFileData *)bufPtr(controlFile);
|
||||
|
||||
FUNCTION_TEST_RESULT(
|
||||
BOOL, controlData->pg_control_version == PG_CONTROL_VERSION && controlData->catalog_version_no == CATALOG_VERSION_NO);
|
||||
}
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Get information from pg_control in a common format
|
||||
***********************************************************************************************************************************/
|
||||
PgControl
|
||||
pgInterfaceControl090(const Buffer *controlFile)
|
||||
{
|
||||
FUNCTION_DEBUG_BEGIN(logLevelTrace);
|
||||
FUNCTION_DEBUG_PARAM(BUFFER, controlFile);
|
||||
|
||||
FUNCTION_TEST_ASSERT(controlFile != NULL);
|
||||
FUNCTION_TEST_ASSERT(pgInterfaceIs090(controlFile));
|
||||
FUNCTION_DEBUG_END();
|
||||
|
||||
PgControl result = {0};
|
||||
ControlFileData *controlData = (ControlFileData *)bufPtr(controlFile);
|
||||
|
||||
result.systemId = controlData->system_identifier;
|
||||
result.controlVersion = controlData->pg_control_version;
|
||||
result.catalogVersion = controlData->catalog_version_no;
|
||||
|
||||
result.pageSize = controlData->blcksz;
|
||||
result.walSegmentSize = controlData->xlog_seg_size;
|
||||
|
||||
FUNCTION_DEBUG_RESULT(PG_CONTROL, result);
|
||||
}
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Create pg_control for testing
|
||||
***********************************************************************************************************************************/
|
||||
#ifdef DEBUG
|
||||
|
||||
void
|
||||
pgInterfaceControlTest090(PgControl pgControl, Buffer *buffer)
|
||||
{
|
||||
FUNCTION_TEST_BEGIN();
|
||||
FUNCTION_TEST_PARAM(PG_CONTROL, pgControl);
|
||||
FUNCTION_TEST_END();
|
||||
|
||||
ControlFileData *controlData = (ControlFileData *)bufPtr(buffer);
|
||||
|
||||
controlData->system_identifier = pgControl.systemId;
|
||||
controlData->pg_control_version = pgControl.controlVersion == 0 ? PG_CONTROL_VERSION : pgControl.controlVersion;
|
||||
controlData->catalog_version_no = pgControl.catalogVersion == 0 ? CATALOG_VERSION_NO : pgControl.catalogVersion;
|
||||
|
||||
controlData->blcksz = pgControl.pageSize;
|
||||
controlData->xlog_seg_size = pgControl.walSegmentSize;
|
||||
|
||||
FUNCTION_TEST_RESULT_VOID();
|
||||
}
|
||||
|
||||
#endif
|
||||
22
src/postgres/interface/v090.h
Normal file
22
src/postgres/interface/v090.h
Normal file
@ -0,0 +1,22 @@
|
||||
/***********************************************************************************************************************************
|
||||
PostgreSQL 9.0 Interface
|
||||
***********************************************************************************************************************************/
|
||||
#ifndef POSTGRES_INTERFACE_INTERFACE090_H
|
||||
#define POSTGRES_INTERFACE_INTERFACE090_H
|
||||
|
||||
#include "postgres/interface.h"
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Functions
|
||||
***********************************************************************************************************************************/
|
||||
bool pgInterfaceIs090(const Buffer *controlFile);
|
||||
PgControl pgInterfaceControl090(const Buffer *controlFile);
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Test Functions
|
||||
***********************************************************************************************************************************/
|
||||
#ifdef DEBUG
|
||||
void pgInterfaceControlTest090(PgControl pgControl, Buffer *buffer);
|
||||
#endif
|
||||
|
||||
#endif
|
||||
252
src/postgres/interface/v091.auto.c
Normal file
252
src/postgres/interface/v091.auto.c
Normal file
@ -0,0 +1,252 @@
|
||||
/***********************************************************************************************************************************
|
||||
PostgreSQL 9.1 Types
|
||||
***********************************************************************************************************************************/
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Types from src/include/c.h
|
||||
***********************************************************************************************************************************/
|
||||
typedef int64_t int64;
|
||||
typedef uint32_t uint32;
|
||||
typedef uint64_t uint64;
|
||||
|
||||
typedef uint32 TransactionId;
|
||||
|
||||
/* MultiXactId must be equivalent to TransactionId, to fit in t_xmax */
|
||||
typedef TransactionId MultiXactId;
|
||||
|
||||
typedef uint32 MultiXactOffset;
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Types from src/include/pgtime.h
|
||||
***********************************************************************************************************************************/
|
||||
/*
|
||||
* The API of this library is generally similar to the corresponding
|
||||
* C library functions, except that we use pg_time_t which (we hope) is
|
||||
* 64 bits wide, and which is most definitely signed not unsigned.
|
||||
*/
|
||||
typedef int64 pg_time_t;
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Types from src/include/postgres_ext.h
|
||||
***********************************************************************************************************************************/
|
||||
/*
|
||||
* Object ID is a fundamental type in Postgres.
|
||||
*/
|
||||
typedef unsigned int Oid;
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Types from src/include/utils/pg_crc32.h
|
||||
***********************************************************************************************************************************/
|
||||
typedef uint32 pg_crc32;
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Types from src/include/access/xlogdefs.h
|
||||
***********************************************************************************************************************************/
|
||||
/*
|
||||
* Pointer to a location in the XLOG. These pointers are 64 bits wide,
|
||||
* because we don't want them ever to overflow.
|
||||
*
|
||||
* NOTE: xrecoff == 0 is used to indicate an invalid pointer. This is OK
|
||||
* because we use page headers in the XLOG, so no XLOG record can start
|
||||
* right at the beginning of a file.
|
||||
*
|
||||
* NOTE: the "log file number" is somewhat misnamed, since the actual files
|
||||
* making up the XLOG are much smaller than 4Gb. Each actual file is an
|
||||
* XLogSegSize-byte "segment" of a logical log file having the indicated
|
||||
* xlogid. The log file number and segment number together identify a
|
||||
* physical XLOG file. Segment number and offset within the physical file
|
||||
* are computed from xrecoff div and mod XLogSegSize.
|
||||
*/
|
||||
typedef struct XLogRecPtr
|
||||
{
|
||||
uint32 xlogid; /* log file #, 0 based */
|
||||
uint32 xrecoff; /* byte offset of location in log file */
|
||||
} XLogRecPtr;
|
||||
|
||||
/*
|
||||
* TimeLineID (TLI) - identifies different database histories to prevent
|
||||
* confusion after restoring a prior state of a database installation.
|
||||
* TLI does not change in a normal stop/restart of the database (including
|
||||
* crash-and-recover cases); but we must assign a new TLI after doing
|
||||
* a recovery to a prior state, a/k/a point-in-time recovery. This makes
|
||||
* the new WAL logfile sequence we generate distinguishable from the
|
||||
* sequence that was generated in the previous incarnation.
|
||||
*/
|
||||
typedef uint32 TimeLineID;
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Types from src/include/catalog/catversion.h
|
||||
***********************************************************************************************************************************/
|
||||
/*
|
||||
* We could use anything we wanted for version numbers, but I recommend
|
||||
* following the "YYYYMMDDN" style often used for DNS zone serial numbers.
|
||||
* YYYYMMDD are the date of the change, and N is the number of the change
|
||||
* on that day. (Hopefully we'll never commit ten independent sets of
|
||||
* catalog changes on the same day...)
|
||||
*/
|
||||
|
||||
/* yyyymmddN */
|
||||
#define CATALOG_VERSION_NO 201105231
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Types from src/include/catalog/pg_control.h
|
||||
***********************************************************************************************************************************/
|
||||
/* Version identifier for this pg_control format */
|
||||
#define PG_CONTROL_VERSION 903
|
||||
|
||||
/*
|
||||
* Body of CheckPoint XLOG records. This is declared here because we keep
|
||||
* a copy of the latest one in pg_control for possible disaster recovery.
|
||||
* Changing this struct requires a PG_CONTROL_VERSION bump.
|
||||
*/
|
||||
typedef struct CheckPoint
|
||||
{
|
||||
XLogRecPtr redo; /* next RecPtr available when we began to
|
||||
* create CheckPoint (i.e. REDO start point) */
|
||||
TimeLineID ThisTimeLineID; /* current TLI */
|
||||
uint32 nextXidEpoch; /* higher-order bits of nextXid */
|
||||
TransactionId nextXid; /* next free XID */
|
||||
Oid nextOid; /* next free OID */
|
||||
MultiXactId nextMulti; /* next free MultiXactId */
|
||||
MultiXactOffset nextMultiOffset; /* next free MultiXact offset */
|
||||
TransactionId oldestXid; /* cluster-wide minimum datfrozenxid */
|
||||
Oid oldestXidDB; /* database with minimum datfrozenxid */
|
||||
pg_time_t time; /* time stamp of checkpoint */
|
||||
|
||||
/*
|
||||
* Oldest XID still running. This is only needed to initialize hot standby
|
||||
* mode from an online checkpoint, so we only bother calculating this for
|
||||
* online checkpoints and only when wal_level is hot_standby. Otherwise
|
||||
* it's set to InvalidTransactionId.
|
||||
*/
|
||||
TransactionId oldestActiveXid;
|
||||
} CheckPoint;
|
||||
|
||||
/*
|
||||
* System status indicator. Note this is stored in pg_control; if you change
|
||||
* it, you must bump PG_CONTROL_VERSION
|
||||
*/
|
||||
typedef enum DBState
|
||||
{
|
||||
DB_STARTUP = 0,
|
||||
DB_SHUTDOWNED,
|
||||
DB_SHUTDOWNED_IN_RECOVERY,
|
||||
DB_SHUTDOWNING,
|
||||
DB_IN_CRASH_RECOVERY,
|
||||
DB_IN_ARCHIVE_RECOVERY,
|
||||
DB_IN_PRODUCTION
|
||||
} DBState;
|
||||
|
||||
/*
|
||||
* Contents of pg_control.
|
||||
*
|
||||
* NOTE: try to keep this under 512 bytes so that it will fit on one physical
|
||||
* sector of typical disk drives. This reduces the odds of corruption due to
|
||||
* power failure midway through a write.
|
||||
*/
|
||||
typedef struct ControlFileData
|
||||
{
|
||||
/*
|
||||
* Unique system identifier --- to ensure we match up xlog files with the
|
||||
* installation that produced them.
|
||||
*/
|
||||
uint64 system_identifier;
|
||||
|
||||
/*
|
||||
* Version identifier information. Keep these fields at the same offset,
|
||||
* especially pg_control_version; they won't be real useful if they move
|
||||
* around. (For historical reasons they must be 8 bytes into the file
|
||||
* rather than immediately at the front.)
|
||||
*
|
||||
* pg_control_version identifies the format of pg_control itself.
|
||||
* catalog_version_no identifies the format of the system catalogs.
|
||||
*
|
||||
* There are additional version identifiers in individual files; for
|
||||
* example, WAL logs contain per-page magic numbers that can serve as
|
||||
* version cues for the WAL log.
|
||||
*/
|
||||
uint32 pg_control_version; /* PG_CONTROL_VERSION */
|
||||
uint32 catalog_version_no; /* see catversion.h */
|
||||
|
||||
/*
|
||||
* System status data
|
||||
*/
|
||||
DBState state; /* see enum above */
|
||||
pg_time_t time; /* time stamp of last pg_control update */
|
||||
XLogRecPtr checkPoint; /* last check point record ptr */
|
||||
XLogRecPtr prevCheckPoint; /* previous check point record ptr */
|
||||
|
||||
CheckPoint checkPointCopy; /* copy of last check point record */
|
||||
|
||||
/*
|
||||
* These two values determine the minimum point we must recover up to
|
||||
* before starting up:
|
||||
*
|
||||
* minRecoveryPoint is updated to the latest replayed LSN whenever we
|
||||
* flush a data change during archive recovery. That guards against
|
||||
* starting archive recovery, aborting it, and restarting with an earlier
|
||||
* stop location. If we've already flushed data changes from WAL record X
|
||||
* to disk, we mustn't start up until we reach X again. Zero when not
|
||||
* doing archive recovery.
|
||||
*
|
||||
* backupStartPoint is the redo pointer of the backup start checkpoint, if
|
||||
* we are recovering from an online backup and haven't reached the end of
|
||||
* backup yet. It is reset to zero when the end of backup is reached, and
|
||||
* we mustn't start up before that. A boolean would suffice otherwise, but
|
||||
* we use the redo pointer as a cross-check when we see an end-of-backup
|
||||
* record, to make sure the end-of-backup record corresponds the base
|
||||
* backup we're recovering from.
|
||||
*/
|
||||
XLogRecPtr minRecoveryPoint;
|
||||
XLogRecPtr backupStartPoint;
|
||||
|
||||
/*
|
||||
* Parameter settings that determine if the WAL can be used for archival
|
||||
* or hot standby.
|
||||
*/
|
||||
int wal_level;
|
||||
int MaxConnections;
|
||||
int max_prepared_xacts;
|
||||
int max_locks_per_xact;
|
||||
|
||||
/*
|
||||
* This data is used to check for hardware-architecture compatibility of
|
||||
* the database and the backend executable. We need not check endianness
|
||||
* explicitly, since the pg_control version will surely look wrong to a
|
||||
* machine of different endianness, but we do need to worry about MAXALIGN
|
||||
* and floating-point format. (Note: storage layout nominally also
|
||||
* depends on SHORTALIGN and INTALIGN, but in practice these are the same
|
||||
* on all architectures of interest.)
|
||||
*
|
||||
* Testing just one double value is not a very bulletproof test for
|
||||
* floating-point compatibility, but it will catch most cases.
|
||||
*/
|
||||
uint32 maxAlign; /* alignment requirement for tuples */
|
||||
double floatFormat; /* constant 1234567.0 */
|
||||
#define FLOATFORMAT_VALUE 1234567.0
|
||||
|
||||
/*
|
||||
* This data is used to make sure that configuration of this database is
|
||||
* compatible with the backend executable.
|
||||
*/
|
||||
uint32 blcksz; /* data block size for this DB */
|
||||
uint32 relseg_size; /* blocks per segment of large relation */
|
||||
|
||||
uint32 xlog_blcksz; /* block size within WAL files */
|
||||
uint32 xlog_seg_size; /* size of each WAL segment */
|
||||
|
||||
uint32 nameDataLen; /* catalog name field width */
|
||||
uint32 indexMaxKeys; /* max number of columns in an index */
|
||||
|
||||
uint32 toast_max_chunk_size; /* chunk size in TOAST tables */
|
||||
|
||||
/* flag indicating internal format of timestamp, interval, time */
|
||||
bool enableIntTimes; /* int64 storage enabled? */
|
||||
|
||||
/* flags indicating pass-by-value status of various types */
|
||||
bool float4ByVal; /* float4 pass-by-value? */
|
||||
bool float8ByVal; /* float8, int8, etc pass-by-value? */
|
||||
|
||||
/* CRC of all above ... MUST BE LAST! */
|
||||
pg_crc32 crc;
|
||||
} ControlFileData;
|
||||
81
src/postgres/interface/v091.c
Normal file
81
src/postgres/interface/v091.c
Normal file
@ -0,0 +1,81 @@
|
||||
/***********************************************************************************************************************************
|
||||
PostgreSQL 9.1 Interface
|
||||
***********************************************************************************************************************************/
|
||||
#include "common/debug.h"
|
||||
#include "common/log.h"
|
||||
#include "postgres/interface/v091.h"
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Include PostgreSQL Types
|
||||
***********************************************************************************************************************************/
|
||||
#include "postgres/interface/v091.auto.c"
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Is the control file for this version of PostgreSQL?
|
||||
***********************************************************************************************************************************/
|
||||
bool
|
||||
pgInterfaceIs091(const Buffer *controlFile)
|
||||
{
|
||||
FUNCTION_TEST_BEGIN();
|
||||
FUNCTION_TEST_PARAM(BUFFER, controlFile);
|
||||
|
||||
FUNCTION_TEST_ASSERT(controlFile != NULL);
|
||||
FUNCTION_TEST_END();
|
||||
|
||||
ControlFileData *controlData = (ControlFileData *)bufPtr(controlFile);
|
||||
|
||||
FUNCTION_TEST_RESULT(
|
||||
BOOL, controlData->pg_control_version == PG_CONTROL_VERSION && controlData->catalog_version_no == CATALOG_VERSION_NO);
|
||||
}
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Get information from pg_control in a common format
|
||||
***********************************************************************************************************************************/
|
||||
PgControl
|
||||
pgInterfaceControl091(const Buffer *controlFile)
|
||||
{
|
||||
FUNCTION_DEBUG_BEGIN(logLevelTrace);
|
||||
FUNCTION_DEBUG_PARAM(BUFFER, controlFile);
|
||||
|
||||
FUNCTION_TEST_ASSERT(controlFile != NULL);
|
||||
FUNCTION_TEST_ASSERT(pgInterfaceIs091(controlFile));
|
||||
FUNCTION_DEBUG_END();
|
||||
|
||||
PgControl result = {0};
|
||||
ControlFileData *controlData = (ControlFileData *)bufPtr(controlFile);
|
||||
|
||||
result.systemId = controlData->system_identifier;
|
||||
result.controlVersion = controlData->pg_control_version;
|
||||
result.catalogVersion = controlData->catalog_version_no;
|
||||
|
||||
result.pageSize = controlData->blcksz;
|
||||
result.walSegmentSize = controlData->xlog_seg_size;
|
||||
|
||||
FUNCTION_DEBUG_RESULT(PG_CONTROL, result);
|
||||
}
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Create pg_control for testing
|
||||
***********************************************************************************************************************************/
|
||||
#ifdef DEBUG
|
||||
|
||||
void
|
||||
pgInterfaceControlTest091(PgControl pgControl, Buffer *buffer)
|
||||
{
|
||||
FUNCTION_TEST_BEGIN();
|
||||
FUNCTION_TEST_PARAM(PG_CONTROL, pgControl);
|
||||
FUNCTION_TEST_END();
|
||||
|
||||
ControlFileData *controlData = (ControlFileData *)bufPtr(buffer);
|
||||
|
||||
controlData->system_identifier = pgControl.systemId;
|
||||
controlData->pg_control_version = pgControl.controlVersion == 0 ? PG_CONTROL_VERSION : pgControl.controlVersion;
|
||||
controlData->catalog_version_no = pgControl.catalogVersion == 0 ? CATALOG_VERSION_NO : pgControl.catalogVersion;
|
||||
|
||||
controlData->blcksz = pgControl.pageSize;
|
||||
controlData->xlog_seg_size = pgControl.walSegmentSize;
|
||||
|
||||
FUNCTION_TEST_RESULT_VOID();
|
||||
}
|
||||
|
||||
#endif
|
||||
22
src/postgres/interface/v091.h
Normal file
22
src/postgres/interface/v091.h
Normal file
@ -0,0 +1,22 @@
|
||||
/***********************************************************************************************************************************
|
||||
PostgreSQL 9.1 Interface
|
||||
***********************************************************************************************************************************/
|
||||
#ifndef POSTGRES_INTERFACE_INTERFACE091_H
|
||||
#define POSTGRES_INTERFACE_INTERFACE091_H
|
||||
|
||||
#include "postgres/interface.h"
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Functions
|
||||
***********************************************************************************************************************************/
|
||||
bool pgInterfaceIs091(const Buffer *controlFile);
|
||||
PgControl pgInterfaceControl091(const Buffer *controlFile);
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Test Functions
|
||||
***********************************************************************************************************************************/
|
||||
#ifdef DEBUG
|
||||
void pgInterfaceControlTest091(PgControl pgControl, Buffer *buffer);
|
||||
#endif
|
||||
|
||||
#endif
|
||||
267
src/postgres/interface/v092.auto.c
Normal file
267
src/postgres/interface/v092.auto.c
Normal file
@ -0,0 +1,267 @@
|
||||
/***********************************************************************************************************************************
|
||||
PostgreSQL 9.2 Types
|
||||
***********************************************************************************************************************************/
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Types from src/include/c.h
|
||||
***********************************************************************************************************************************/
|
||||
typedef int64_t int64;
|
||||
typedef uint32_t uint32;
|
||||
typedef uint64_t uint64;
|
||||
|
||||
typedef uint32 TransactionId;
|
||||
|
||||
/* MultiXactId must be equivalent to TransactionId, to fit in t_xmax */
|
||||
typedef TransactionId MultiXactId;
|
||||
|
||||
typedef uint32 MultiXactOffset;
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Types from src/include/pgtime.h
|
||||
***********************************************************************************************************************************/
|
||||
/*
|
||||
* The API of this library is generally similar to the corresponding
|
||||
* C library functions, except that we use pg_time_t which (we hope) is
|
||||
* 64 bits wide, and which is most definitely signed not unsigned.
|
||||
*/
|
||||
typedef int64 pg_time_t;
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Types from src/include/postgres_ext.h
|
||||
***********************************************************************************************************************************/
|
||||
/*
|
||||
* Object ID is a fundamental type in Postgres.
|
||||
*/
|
||||
typedef unsigned int Oid;
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Types from src/include/utils/pg_crc32.h
|
||||
***********************************************************************************************************************************/
|
||||
typedef uint32 pg_crc32;
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Types from src/include/access/xlogdefs.h
|
||||
***********************************************************************************************************************************/
|
||||
/*
|
||||
* Pointer to a location in the XLOG. These pointers are 64 bits wide,
|
||||
* because we don't want them ever to overflow.
|
||||
*
|
||||
* NOTE: xrecoff == 0 is used to indicate an invalid pointer. This is OK
|
||||
* because we use page headers in the XLOG, so no XLOG record can start
|
||||
* right at the beginning of a file.
|
||||
*
|
||||
* NOTE: the "log file number" is somewhat misnamed, since the actual files
|
||||
* making up the XLOG are much smaller than 4Gb. Each actual file is an
|
||||
* XLogSegSize-byte "segment" of a logical log file having the indicated
|
||||
* xlogid. The log file number and segment number together identify a
|
||||
* physical XLOG file. Segment number and offset within the physical file
|
||||
* are computed from xrecoff div and mod XLogSegSize.
|
||||
*/
|
||||
typedef struct XLogRecPtr
|
||||
{
|
||||
uint32 xlogid; /* log file #, 0 based */
|
||||
uint32 xrecoff; /* byte offset of location in log file */
|
||||
} XLogRecPtr;
|
||||
|
||||
/*
|
||||
* TimeLineID (TLI) - identifies different database histories to prevent
|
||||
* confusion after restoring a prior state of a database installation.
|
||||
* TLI does not change in a normal stop/restart of the database (including
|
||||
* crash-and-recover cases); but we must assign a new TLI after doing
|
||||
* a recovery to a prior state, a/k/a point-in-time recovery. This makes
|
||||
* the new WAL logfile sequence we generate distinguishable from the
|
||||
* sequence that was generated in the previous incarnation.
|
||||
*/
|
||||
typedef uint32 TimeLineID;
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Types from src/include/catalog/catversion.h
|
||||
***********************************************************************************************************************************/
|
||||
/*
|
||||
* We could use anything we wanted for version numbers, but I recommend
|
||||
* following the "YYYYMMDDN" style often used for DNS zone serial numbers.
|
||||
* YYYYMMDD are the date of the change, and N is the number of the change
|
||||
* on that day. (Hopefully we'll never commit ten independent sets of
|
||||
* catalog changes on the same day...)
|
||||
*/
|
||||
|
||||
/* yyyymmddN */
|
||||
#define CATALOG_VERSION_NO 201204301
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Types from src/include/catalog/pg_control.h
|
||||
***********************************************************************************************************************************/
|
||||
/* Version identifier for this pg_control format */
|
||||
#define PG_CONTROL_VERSION 922
|
||||
|
||||
/*
|
||||
* Body of CheckPoint XLOG records. This is declared here because we keep
|
||||
* a copy of the latest one in pg_control for possible disaster recovery.
|
||||
* Changing this struct requires a PG_CONTROL_VERSION bump.
|
||||
*/
|
||||
typedef struct CheckPoint
|
||||
{
|
||||
XLogRecPtr redo; /* next RecPtr available when we began to
|
||||
* create CheckPoint (i.e. REDO start point) */
|
||||
TimeLineID ThisTimeLineID; /* current TLI */
|
||||
bool fullPageWrites; /* current full_page_writes */
|
||||
uint32 nextXidEpoch; /* higher-order bits of nextXid */
|
||||
TransactionId nextXid; /* next free XID */
|
||||
Oid nextOid; /* next free OID */
|
||||
MultiXactId nextMulti; /* next free MultiXactId */
|
||||
MultiXactOffset nextMultiOffset; /* next free MultiXact offset */
|
||||
TransactionId oldestXid; /* cluster-wide minimum datfrozenxid */
|
||||
Oid oldestXidDB; /* database with minimum datfrozenxid */
|
||||
pg_time_t time; /* time stamp of checkpoint */
|
||||
|
||||
/*
|
||||
* Oldest XID still running. This is only needed to initialize hot standby
|
||||
* mode from an online checkpoint, so we only bother calculating this for
|
||||
* online checkpoints and only when wal_level is hot_standby. Otherwise
|
||||
* it's set to InvalidTransactionId.
|
||||
*/
|
||||
TransactionId oldestActiveXid;
|
||||
} CheckPoint;
|
||||
|
||||
/*
|
||||
* System status indicator. Note this is stored in pg_control; if you change
|
||||
* it, you must bump PG_CONTROL_VERSION
|
||||
*/
|
||||
typedef enum DBState
|
||||
{
|
||||
DB_STARTUP = 0,
|
||||
DB_SHUTDOWNED,
|
||||
DB_SHUTDOWNED_IN_RECOVERY,
|
||||
DB_SHUTDOWNING,
|
||||
DB_IN_CRASH_RECOVERY,
|
||||
DB_IN_ARCHIVE_RECOVERY,
|
||||
DB_IN_PRODUCTION
|
||||
} DBState;
|
||||
|
||||
/*
|
||||
* Contents of pg_control.
|
||||
*
|
||||
* NOTE: try to keep this under 512 bytes so that it will fit on one physical
|
||||
* sector of typical disk drives. This reduces the odds of corruption due to
|
||||
* power failure midway through a write.
|
||||
*/
|
||||
typedef struct ControlFileData
|
||||
{
|
||||
/*
|
||||
* Unique system identifier --- to ensure we match up xlog files with the
|
||||
* installation that produced them.
|
||||
*/
|
||||
uint64 system_identifier;
|
||||
|
||||
/*
|
||||
* Version identifier information. Keep these fields at the same offset,
|
||||
* especially pg_control_version; they won't be real useful if they move
|
||||
* around. (For historical reasons they must be 8 bytes into the file
|
||||
* rather than immediately at the front.)
|
||||
*
|
||||
* pg_control_version identifies the format of pg_control itself.
|
||||
* catalog_version_no identifies the format of the system catalogs.
|
||||
*
|
||||
* There are additional version identifiers in individual files; for
|
||||
* example, WAL logs contain per-page magic numbers that can serve as
|
||||
* version cues for the WAL log.
|
||||
*/
|
||||
uint32 pg_control_version; /* PG_CONTROL_VERSION */
|
||||
uint32 catalog_version_no; /* see catversion.h */
|
||||
|
||||
/*
|
||||
* System status data
|
||||
*/
|
||||
DBState state; /* see enum above */
|
||||
pg_time_t time; /* time stamp of last pg_control update */
|
||||
XLogRecPtr checkPoint; /* last check point record ptr */
|
||||
XLogRecPtr prevCheckPoint; /* previous check point record ptr */
|
||||
|
||||
CheckPoint checkPointCopy; /* copy of last check point record */
|
||||
|
||||
/*
|
||||
* These two values determine the minimum point we must recover up to
|
||||
* before starting up:
|
||||
*
|
||||
* minRecoveryPoint is updated to the latest replayed LSN whenever we
|
||||
* flush a data change during archive recovery. That guards against
|
||||
* starting archive recovery, aborting it, and restarting with an earlier
|
||||
* stop location. If we've already flushed data changes from WAL record X
|
||||
* to disk, we mustn't start up until we reach X again. Zero when not
|
||||
* doing archive recovery.
|
||||
*
|
||||
* backupStartPoint is the redo pointer of the backup start checkpoint, if
|
||||
* we are recovering from an online backup and haven't reached the end of
|
||||
* backup yet. It is reset to zero when the end of backup is reached, and
|
||||
* we mustn't start up before that. A boolean would suffice otherwise, but
|
||||
* we use the redo pointer as a cross-check when we see an end-of-backup
|
||||
* record, to make sure the end-of-backup record corresponds the base
|
||||
* backup we're recovering from.
|
||||
*
|
||||
* backupEndPoint is the backup end location, if we are recovering from an
|
||||
* online backup which was taken from the standby and haven't reached the
|
||||
* end of backup yet. It is initialized to the minimum recovery point in
|
||||
* pg_control which was backed up last. It is reset to zero when the end
|
||||
* of backup is reached, and we mustn't start up before that.
|
||||
*
|
||||
* If backupEndRequired is true, we know for sure that we're restoring
|
||||
* from a backup, and must see a backup-end record before we can safely
|
||||
* start up. If it's false, but backupStartPoint is set, a backup_label
|
||||
* file was found at startup but it may have been a leftover from a stray
|
||||
* pg_start_backup() call, not accompanied by pg_stop_backup().
|
||||
*/
|
||||
XLogRecPtr minRecoveryPoint;
|
||||
XLogRecPtr backupStartPoint;
|
||||
XLogRecPtr backupEndPoint;
|
||||
bool backupEndRequired;
|
||||
|
||||
/*
|
||||
* Parameter settings that determine if the WAL can be used for archival
|
||||
* or hot standby.
|
||||
*/
|
||||
int wal_level;
|
||||
int MaxConnections;
|
||||
int max_prepared_xacts;
|
||||
int max_locks_per_xact;
|
||||
|
||||
/*
|
||||
* This data is used to check for hardware-architecture compatibility of
|
||||
* the database and the backend executable. We need not check endianness
|
||||
* explicitly, since the pg_control version will surely look wrong to a
|
||||
* machine of different endianness, but we do need to worry about MAXALIGN
|
||||
* and floating-point format. (Note: storage layout nominally also
|
||||
* depends on SHORTALIGN and INTALIGN, but in practice these are the same
|
||||
* on all architectures of interest.)
|
||||
*
|
||||
* Testing just one double value is not a very bulletproof test for
|
||||
* floating-point compatibility, but it will catch most cases.
|
||||
*/
|
||||
uint32 maxAlign; /* alignment requirement for tuples */
|
||||
double floatFormat; /* constant 1234567.0 */
|
||||
#define FLOATFORMAT_VALUE 1234567.0
|
||||
|
||||
/*
|
||||
* This data is used to make sure that configuration of this database is
|
||||
* compatible with the backend executable.
|
||||
*/
|
||||
uint32 blcksz; /* data block size for this DB */
|
||||
uint32 relseg_size; /* blocks per segment of large relation */
|
||||
|
||||
uint32 xlog_blcksz; /* block size within WAL files */
|
||||
uint32 xlog_seg_size; /* size of each WAL segment */
|
||||
|
||||
uint32 nameDataLen; /* catalog name field width */
|
||||
uint32 indexMaxKeys; /* max number of columns in an index */
|
||||
|
||||
uint32 toast_max_chunk_size; /* chunk size in TOAST tables */
|
||||
|
||||
/* flag indicating internal format of timestamp, interval, time */
|
||||
bool enableIntTimes; /* int64 storage enabled? */
|
||||
|
||||
/* flags indicating pass-by-value status of various types */
|
||||
bool float4ByVal; /* float4 pass-by-value? */
|
||||
bool float8ByVal; /* float8, int8, etc pass-by-value? */
|
||||
|
||||
/* CRC of all above ... MUST BE LAST! */
|
||||
pg_crc32 crc;
|
||||
} ControlFileData;
|
||||
81
src/postgres/interface/v092.c
Normal file
81
src/postgres/interface/v092.c
Normal file
@ -0,0 +1,81 @@
|
||||
/***********************************************************************************************************************************
|
||||
PostgreSQL 9.2 Interface
|
||||
***********************************************************************************************************************************/
|
||||
#include "common/debug.h"
|
||||
#include "common/log.h"
|
||||
#include "postgres/interface/v092.h"
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Include PostgreSQL Types
|
||||
***********************************************************************************************************************************/
|
||||
#include "postgres/interface/v092.auto.c"
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Is the control file for this version of PostgreSQL?
|
||||
***********************************************************************************************************************************/
|
||||
bool
|
||||
pgInterfaceIs092(const Buffer *controlFile)
|
||||
{
|
||||
FUNCTION_TEST_BEGIN();
|
||||
FUNCTION_TEST_PARAM(BUFFER, controlFile);
|
||||
|
||||
FUNCTION_TEST_ASSERT(controlFile != NULL);
|
||||
FUNCTION_TEST_END();
|
||||
|
||||
ControlFileData *controlData = (ControlFileData *)bufPtr(controlFile);
|
||||
|
||||
FUNCTION_TEST_RESULT(
|
||||
BOOL, controlData->pg_control_version == PG_CONTROL_VERSION && controlData->catalog_version_no == CATALOG_VERSION_NO);
|
||||
}
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Get information from pg_control in a common format
|
||||
***********************************************************************************************************************************/
|
||||
PgControl
|
||||
pgInterfaceControl092(const Buffer *controlFile)
|
||||
{
|
||||
FUNCTION_DEBUG_BEGIN(logLevelTrace);
|
||||
FUNCTION_DEBUG_PARAM(BUFFER, controlFile);
|
||||
|
||||
FUNCTION_TEST_ASSERT(controlFile != NULL);
|
||||
FUNCTION_TEST_ASSERT(pgInterfaceIs092(controlFile));
|
||||
FUNCTION_DEBUG_END();
|
||||
|
||||
PgControl result = {0};
|
||||
ControlFileData *controlData = (ControlFileData *)bufPtr(controlFile);
|
||||
|
||||
result.systemId = controlData->system_identifier;
|
||||
result.controlVersion = controlData->pg_control_version;
|
||||
result.catalogVersion = controlData->catalog_version_no;
|
||||
|
||||
result.pageSize = controlData->blcksz;
|
||||
result.walSegmentSize = controlData->xlog_seg_size;
|
||||
|
||||
FUNCTION_DEBUG_RESULT(PG_CONTROL, result);
|
||||
}
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Create pg_control for testing
|
||||
***********************************************************************************************************************************/
|
||||
#ifdef DEBUG
|
||||
|
||||
void
|
||||
pgInterfaceControlTest092(PgControl pgControl, Buffer *buffer)
|
||||
{
|
||||
FUNCTION_TEST_BEGIN();
|
||||
FUNCTION_TEST_PARAM(PG_CONTROL, pgControl);
|
||||
FUNCTION_TEST_END();
|
||||
|
||||
ControlFileData *controlData = (ControlFileData *)bufPtr(buffer);
|
||||
|
||||
controlData->system_identifier = pgControl.systemId;
|
||||
controlData->pg_control_version = pgControl.controlVersion == 0 ? PG_CONTROL_VERSION : pgControl.controlVersion;
|
||||
controlData->catalog_version_no = pgControl.catalogVersion == 0 ? CATALOG_VERSION_NO : pgControl.catalogVersion;
|
||||
|
||||
controlData->blcksz = pgControl.pageSize;
|
||||
controlData->xlog_seg_size = pgControl.walSegmentSize;
|
||||
|
||||
FUNCTION_TEST_RESULT_VOID();
|
||||
}
|
||||
|
||||
#endif
|
||||
22
src/postgres/interface/v092.h
Normal file
22
src/postgres/interface/v092.h
Normal file
@ -0,0 +1,22 @@
|
||||
/***********************************************************************************************************************************
|
||||
PostgreSQL 9.2 Interface
|
||||
***********************************************************************************************************************************/
|
||||
#ifndef POSTGRES_INTERFACE_INTERFACE092_H
|
||||
#define POSTGRES_INTERFACE_INTERFACE092_H
|
||||
|
||||
#include "postgres/interface.h"
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Functions
|
||||
***********************************************************************************************************************************/
|
||||
bool pgInterfaceIs092(const Buffer *controlFile);
|
||||
PgControl pgInterfaceControl092(const Buffer *controlFile);
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Test Functions
|
||||
***********************************************************************************************************************************/
|
||||
#ifdef DEBUG
|
||||
void pgInterfaceControlTest092(PgControl pgControl, Buffer *buffer);
|
||||
#endif
|
||||
|
||||
#endif
|
||||
262
src/postgres/interface/v093.auto.c
Normal file
262
src/postgres/interface/v093.auto.c
Normal file
@ -0,0 +1,262 @@
|
||||
/***********************************************************************************************************************************
|
||||
PostgreSQL 9.3 Types
|
||||
***********************************************************************************************************************************/
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Types from src/include/c.h
|
||||
***********************************************************************************************************************************/
|
||||
typedef int64_t int64;
|
||||
typedef uint32_t uint32;
|
||||
typedef uint64_t uint64;
|
||||
|
||||
typedef uint32 TransactionId;
|
||||
|
||||
/* MultiXactId must be equivalent to TransactionId, to fit in t_xmax */
|
||||
typedef TransactionId MultiXactId;
|
||||
|
||||
typedef uint32 MultiXactOffset;
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Types from src/include/pgtime.h
|
||||
***********************************************************************************************************************************/
|
||||
/*
|
||||
* The API of this library is generally similar to the corresponding
|
||||
* C library functions, except that we use pg_time_t which (we hope) is
|
||||
* 64 bits wide, and which is most definitely signed not unsigned.
|
||||
*/
|
||||
typedef int64 pg_time_t;
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Types from src/include/postgres_ext.h
|
||||
***********************************************************************************************************************************/
|
||||
/*
|
||||
* Object ID is a fundamental type in Postgres.
|
||||
*/
|
||||
typedef unsigned int Oid;
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Types from src/include/utils/pg_crc32.h
|
||||
***********************************************************************************************************************************/
|
||||
typedef uint32 pg_crc32;
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Types from src/include/access/xlogdefs.h
|
||||
***********************************************************************************************************************************/
|
||||
/*
|
||||
* Pointer to a location in the XLOG. These pointers are 64 bits wide,
|
||||
* because we don't want them ever to overflow.
|
||||
*/
|
||||
typedef uint64 XLogRecPtr;
|
||||
|
||||
/*
|
||||
* TimeLineID (TLI) - identifies different database histories to prevent
|
||||
* confusion after restoring a prior state of a database installation.
|
||||
* TLI does not change in a normal stop/restart of the database (including
|
||||
* crash-and-recover cases); but we must assign a new TLI after doing
|
||||
* a recovery to a prior state, a/k/a point-in-time recovery. This makes
|
||||
* the new WAL logfile sequence we generate distinguishable from the
|
||||
* sequence that was generated in the previous incarnation.
|
||||
*/
|
||||
typedef uint32 TimeLineID;
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Types from src/include/catalog/catversion.h
|
||||
***********************************************************************************************************************************/
|
||||
/*
|
||||
* We could use anything we wanted for version numbers, but I recommend
|
||||
* following the "YYYYMMDDN" style often used for DNS zone serial numbers.
|
||||
* YYYYMMDD are the date of the change, and N is the number of the change
|
||||
* on that day. (Hopefully we'll never commit ten independent sets of
|
||||
* catalog changes on the same day...)
|
||||
*/
|
||||
|
||||
/* yyyymmddN */
|
||||
#define CATALOG_VERSION_NO 201306121
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Types from src/include/catalog/pg_control.h
|
||||
***********************************************************************************************************************************/
|
||||
/* Version identifier for this pg_control format */
|
||||
#define PG_CONTROL_VERSION 937
|
||||
|
||||
/*
|
||||
* Body of CheckPoint XLOG records. This is declared here because we keep
|
||||
* a copy of the latest one in pg_control for possible disaster recovery.
|
||||
* Changing this struct requires a PG_CONTROL_VERSION bump.
|
||||
*/
|
||||
typedef struct CheckPoint
|
||||
{
|
||||
XLogRecPtr redo; /* next RecPtr available when we began to
|
||||
* create CheckPoint (i.e. REDO start point) */
|
||||
TimeLineID ThisTimeLineID; /* current TLI */
|
||||
TimeLineID PrevTimeLineID; /* previous TLI, if this record begins a new
|
||||
* timeline (equals ThisTimeLineID otherwise) */
|
||||
bool fullPageWrites; /* current full_page_writes */
|
||||
uint32 nextXidEpoch; /* higher-order bits of nextXid */
|
||||
TransactionId nextXid; /* next free XID */
|
||||
Oid nextOid; /* next free OID */
|
||||
MultiXactId nextMulti; /* next free MultiXactId */
|
||||
MultiXactOffset nextMultiOffset; /* next free MultiXact offset */
|
||||
TransactionId oldestXid; /* cluster-wide minimum datfrozenxid */
|
||||
Oid oldestXidDB; /* database with minimum datfrozenxid */
|
||||
MultiXactId oldestMulti; /* cluster-wide minimum datminmxid */
|
||||
Oid oldestMultiDB; /* database with minimum datminmxid */
|
||||
pg_time_t time; /* time stamp of checkpoint */
|
||||
|
||||
/*
|
||||
* Oldest XID still running. This is only needed to initialize hot standby
|
||||
* mode from an online checkpoint, so we only bother calculating this for
|
||||
* online checkpoints and only when wal_level is hot_standby. Otherwise
|
||||
* it's set to InvalidTransactionId.
|
||||
*/
|
||||
TransactionId oldestActiveXid;
|
||||
} CheckPoint;
|
||||
|
||||
/*
|
||||
* System status indicator. Note this is stored in pg_control; if you change
|
||||
* it, you must bump PG_CONTROL_VERSION
|
||||
*/
|
||||
typedef enum DBState
|
||||
{
|
||||
DB_STARTUP = 0,
|
||||
DB_SHUTDOWNED,
|
||||
DB_SHUTDOWNED_IN_RECOVERY,
|
||||
DB_SHUTDOWNING,
|
||||
DB_IN_CRASH_RECOVERY,
|
||||
DB_IN_ARCHIVE_RECOVERY,
|
||||
DB_IN_PRODUCTION
|
||||
} DBState;
|
||||
|
||||
/*
|
||||
* Contents of pg_control.
|
||||
*
|
||||
* NOTE: try to keep this under 512 bytes so that it will fit on one physical
|
||||
* sector of typical disk drives. This reduces the odds of corruption due to
|
||||
* power failure midway through a write.
|
||||
*/
|
||||
typedef struct ControlFileData
|
||||
{
|
||||
/*
|
||||
* Unique system identifier --- to ensure we match up xlog files with the
|
||||
* installation that produced them.
|
||||
*/
|
||||
uint64 system_identifier;
|
||||
|
||||
/*
|
||||
* Version identifier information. Keep these fields at the same offset,
|
||||
* especially pg_control_version; they won't be real useful if they move
|
||||
* around. (For historical reasons they must be 8 bytes into the file
|
||||
* rather than immediately at the front.)
|
||||
*
|
||||
* pg_control_version identifies the format of pg_control itself.
|
||||
* catalog_version_no identifies the format of the system catalogs.
|
||||
*
|
||||
* There are additional version identifiers in individual files; for
|
||||
* example, WAL logs contain per-page magic numbers that can serve as
|
||||
* version cues for the WAL log.
|
||||
*/
|
||||
uint32 pg_control_version; /* PG_CONTROL_VERSION */
|
||||
uint32 catalog_version_no; /* see catversion.h */
|
||||
|
||||
/*
|
||||
* System status data
|
||||
*/
|
||||
DBState state; /* see enum above */
|
||||
pg_time_t time; /* time stamp of last pg_control update */
|
||||
XLogRecPtr checkPoint; /* last check point record ptr */
|
||||
XLogRecPtr prevCheckPoint; /* previous check point record ptr */
|
||||
|
||||
CheckPoint checkPointCopy; /* copy of last check point record */
|
||||
|
||||
XLogRecPtr unloggedLSN; /* current fake LSN value, for unlogged rels */
|
||||
|
||||
/*
|
||||
* These two values determine the minimum point we must recover up to
|
||||
* before starting up:
|
||||
*
|
||||
* minRecoveryPoint is updated to the latest replayed LSN whenever we
|
||||
* flush a data change during archive recovery. That guards against
|
||||
* starting archive recovery, aborting it, and restarting with an earlier
|
||||
* stop location. If we've already flushed data changes from WAL record X
|
||||
* to disk, we mustn't start up until we reach X again. Zero when not
|
||||
* doing archive recovery.
|
||||
*
|
||||
* backupStartPoint is the redo pointer of the backup start checkpoint, if
|
||||
* we are recovering from an online backup and haven't reached the end of
|
||||
* backup yet. It is reset to zero when the end of backup is reached, and
|
||||
* we mustn't start up before that. A boolean would suffice otherwise, but
|
||||
* we use the redo pointer as a cross-check when we see an end-of-backup
|
||||
* record, to make sure the end-of-backup record corresponds the base
|
||||
* backup we're recovering from.
|
||||
*
|
||||
* backupEndPoint is the backup end location, if we are recovering from an
|
||||
* online backup which was taken from the standby and haven't reached the
|
||||
* end of backup yet. It is initialized to the minimum recovery point in
|
||||
* pg_control which was backed up last. It is reset to zero when the end
|
||||
* of backup is reached, and we mustn't start up before that.
|
||||
*
|
||||
* If backupEndRequired is true, we know for sure that we're restoring
|
||||
* from a backup, and must see a backup-end record before we can safely
|
||||
* start up. If it's false, but backupStartPoint is set, a backup_label
|
||||
* file was found at startup but it may have been a leftover from a stray
|
||||
* pg_start_backup() call, not accompanied by pg_stop_backup().
|
||||
*/
|
||||
XLogRecPtr minRecoveryPoint;
|
||||
TimeLineID minRecoveryPointTLI;
|
||||
XLogRecPtr backupStartPoint;
|
||||
XLogRecPtr backupEndPoint;
|
||||
bool backupEndRequired;
|
||||
|
||||
/*
|
||||
* Parameter settings that determine if the WAL can be used for archival
|
||||
* or hot standby.
|
||||
*/
|
||||
int wal_level;
|
||||
int MaxConnections;
|
||||
int max_prepared_xacts;
|
||||
int max_locks_per_xact;
|
||||
|
||||
/*
|
||||
* This data is used to check for hardware-architecture compatibility of
|
||||
* the database and the backend executable. We need not check endianness
|
||||
* explicitly, since the pg_control version will surely look wrong to a
|
||||
* machine of different endianness, but we do need to worry about MAXALIGN
|
||||
* and floating-point format. (Note: storage layout nominally also
|
||||
* depends on SHORTALIGN and INTALIGN, but in practice these are the same
|
||||
* on all architectures of interest.)
|
||||
*
|
||||
* Testing just one double value is not a very bulletproof test for
|
||||
* floating-point compatibility, but it will catch most cases.
|
||||
*/
|
||||
uint32 maxAlign; /* alignment requirement for tuples */
|
||||
double floatFormat; /* constant 1234567.0 */
|
||||
#define FLOATFORMAT_VALUE 1234567.0
|
||||
|
||||
/*
|
||||
* This data is used to make sure that configuration of this database is
|
||||
* compatible with the backend executable.
|
||||
*/
|
||||
uint32 blcksz; /* data block size for this DB */
|
||||
uint32 relseg_size; /* blocks per segment of large relation */
|
||||
|
||||
uint32 xlog_blcksz; /* block size within WAL files */
|
||||
uint32 xlog_seg_size; /* size of each WAL segment */
|
||||
|
||||
uint32 nameDataLen; /* catalog name field width */
|
||||
uint32 indexMaxKeys; /* max number of columns in an index */
|
||||
|
||||
uint32 toast_max_chunk_size; /* chunk size in TOAST tables */
|
||||
|
||||
/* flag indicating internal format of timestamp, interval, time */
|
||||
bool enableIntTimes; /* int64 storage enabled? */
|
||||
|
||||
/* flags indicating pass-by-value status of various types */
|
||||
bool float4ByVal; /* float4 pass-by-value? */
|
||||
bool float8ByVal; /* float8, int8, etc pass-by-value? */
|
||||
|
||||
/* Are data pages protected by checksums? Zero if no checksum version */
|
||||
uint32 data_checksum_version;
|
||||
|
||||
/* CRC of all above ... MUST BE LAST! */
|
||||
pg_crc32 crc;
|
||||
} ControlFileData;
|
||||
85
src/postgres/interface/v093.c
Normal file
85
src/postgres/interface/v093.c
Normal file
@ -0,0 +1,85 @@
|
||||
/***********************************************************************************************************************************
|
||||
PostgreSQL 9.3 Interface
|
||||
***********************************************************************************************************************************/
|
||||
#include "common/debug.h"
|
||||
#include "common/log.h"
|
||||
#include "postgres/interface/v093.h"
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Include PostgreSQL Types
|
||||
***********************************************************************************************************************************/
|
||||
#include "postgres/interface/v093.auto.c"
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Is the control file for this version of PostgreSQL?
|
||||
***********************************************************************************************************************************/
|
||||
bool
|
||||
pgInterfaceIs093(const Buffer *controlFile)
|
||||
{
|
||||
FUNCTION_TEST_BEGIN();
|
||||
FUNCTION_TEST_PARAM(BUFFER, controlFile);
|
||||
|
||||
FUNCTION_TEST_ASSERT(controlFile != NULL);
|
||||
FUNCTION_TEST_END();
|
||||
|
||||
ControlFileData *controlData = (ControlFileData *)bufPtr(controlFile);
|
||||
|
||||
FUNCTION_TEST_RESULT(
|
||||
BOOL, controlData->pg_control_version == PG_CONTROL_VERSION && controlData->catalog_version_no == CATALOG_VERSION_NO);
|
||||
}
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Get information from pg_control in a common format
|
||||
***********************************************************************************************************************************/
|
||||
PgControl
|
||||
pgInterfaceControl093(const Buffer *controlFile)
|
||||
{
|
||||
FUNCTION_DEBUG_BEGIN(logLevelTrace);
|
||||
FUNCTION_DEBUG_PARAM(BUFFER, controlFile);
|
||||
|
||||
FUNCTION_TEST_ASSERT(controlFile != NULL);
|
||||
FUNCTION_TEST_ASSERT(pgInterfaceIs093(controlFile));
|
||||
FUNCTION_DEBUG_END();
|
||||
|
||||
PgControl result = {0};
|
||||
ControlFileData *controlData = (ControlFileData *)bufPtr(controlFile);
|
||||
|
||||
result.systemId = controlData->system_identifier;
|
||||
result.controlVersion = controlData->pg_control_version;
|
||||
result.catalogVersion = controlData->catalog_version_no;
|
||||
|
||||
result.pageSize = controlData->blcksz;
|
||||
result.walSegmentSize = controlData->xlog_seg_size;
|
||||
|
||||
result.pageChecksum = controlData->data_checksum_version != 0;
|
||||
|
||||
FUNCTION_DEBUG_RESULT(PG_CONTROL, result);
|
||||
}
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Create pg_control for testing
|
||||
***********************************************************************************************************************************/
|
||||
#ifdef DEBUG
|
||||
|
||||
void
|
||||
pgInterfaceControlTest093(PgControl pgControl, Buffer *buffer)
|
||||
{
|
||||
FUNCTION_TEST_BEGIN();
|
||||
FUNCTION_TEST_PARAM(PG_CONTROL, pgControl);
|
||||
FUNCTION_TEST_END();
|
||||
|
||||
ControlFileData *controlData = (ControlFileData *)bufPtr(buffer);
|
||||
|
||||
controlData->system_identifier = pgControl.systemId;
|
||||
controlData->pg_control_version = pgControl.controlVersion == 0 ? PG_CONTROL_VERSION : pgControl.controlVersion;
|
||||
controlData->catalog_version_no = pgControl.catalogVersion == 0 ? CATALOG_VERSION_NO : pgControl.catalogVersion;
|
||||
|
||||
controlData->blcksz = pgControl.pageSize;
|
||||
controlData->xlog_seg_size = pgControl.walSegmentSize;
|
||||
|
||||
controlData->data_checksum_version = pgControl.pageChecksum;
|
||||
|
||||
FUNCTION_TEST_RESULT_VOID();
|
||||
}
|
||||
|
||||
#endif
|
||||
22
src/postgres/interface/v093.h
Normal file
22
src/postgres/interface/v093.h
Normal file
@ -0,0 +1,22 @@
|
||||
/***********************************************************************************************************************************
|
||||
PostgreSQL 9.3 Interface
|
||||
***********************************************************************************************************************************/
|
||||
#ifndef POSTGRES_INTERFACE_INTERFACE093_H
|
||||
#define POSTGRES_INTERFACE_INTERFACE093_H
|
||||
|
||||
#include "postgres/interface.h"
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Functions
|
||||
***********************************************************************************************************************************/
|
||||
bool pgInterfaceIs093(const Buffer *controlFile);
|
||||
PgControl pgInterfaceControl093(const Buffer *controlFile);
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Test Functions
|
||||
***********************************************************************************************************************************/
|
||||
#ifdef DEBUG
|
||||
void pgInterfaceControlTest093(PgControl pgControl, Buffer *buffer);
|
||||
#endif
|
||||
|
||||
#endif
|
||||
265
src/postgres/interface/v094.auto.c
Normal file
265
src/postgres/interface/v094.auto.c
Normal file
@ -0,0 +1,265 @@
|
||||
/***********************************************************************************************************************************
|
||||
PostgreSQL 9.4 Types
|
||||
***********************************************************************************************************************************/
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Types from src/include/c.h
|
||||
***********************************************************************************************************************************/
|
||||
typedef int64_t int64;
|
||||
typedef uint32_t uint32;
|
||||
typedef uint64_t uint64;
|
||||
|
||||
typedef uint32 TransactionId;
|
||||
|
||||
/* MultiXactId must be equivalent to TransactionId, to fit in t_xmax */
|
||||
typedef TransactionId MultiXactId;
|
||||
|
||||
typedef uint32 MultiXactOffset;
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Types from src/include/pgtime.h
|
||||
***********************************************************************************************************************************/
|
||||
/*
|
||||
* The API of this library is generally similar to the corresponding
|
||||
* C library functions, except that we use pg_time_t which (we hope) is
|
||||
* 64 bits wide, and which is most definitely signed not unsigned.
|
||||
*/
|
||||
typedef int64 pg_time_t;
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Types from src/include/postgres_ext.h
|
||||
***********************************************************************************************************************************/
|
||||
/*
|
||||
* Object ID is a fundamental type in Postgres.
|
||||
*/
|
||||
typedef unsigned int Oid;
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Types from src/include/utils/pg_crc32.h
|
||||
***********************************************************************************************************************************/
|
||||
typedef uint32 pg_crc32;
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Types from src/include/access/xlogdefs.h
|
||||
***********************************************************************************************************************************/
|
||||
/*
|
||||
* Pointer to a location in the XLOG. These pointers are 64 bits wide,
|
||||
* because we don't want them ever to overflow.
|
||||
*/
|
||||
typedef uint64 XLogRecPtr;
|
||||
|
||||
/*
|
||||
* TimeLineID (TLI) - identifies different database histories to prevent
|
||||
* confusion after restoring a prior state of a database installation.
|
||||
* TLI does not change in a normal stop/restart of the database (including
|
||||
* crash-and-recover cases); but we must assign a new TLI after doing
|
||||
* a recovery to a prior state, a/k/a point-in-time recovery. This makes
|
||||
* the new WAL logfile sequence we generate distinguishable from the
|
||||
* sequence that was generated in the previous incarnation.
|
||||
*/
|
||||
typedef uint32 TimeLineID;
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Types from src/include/catalog/catversion.h
|
||||
***********************************************************************************************************************************/
|
||||
/*
|
||||
* We could use anything we wanted for version numbers, but I recommend
|
||||
* following the "YYYYMMDDN" style often used for DNS zone serial numbers.
|
||||
* YYYYMMDD are the date of the change, and N is the number of the change
|
||||
* on that day. (Hopefully we'll never commit ten independent sets of
|
||||
* catalog changes on the same day...)
|
||||
*/
|
||||
|
||||
/* yyyymmddN */
|
||||
#define CATALOG_VERSION_NO 201409291
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Types from src/include/catalog/pg_control.h
|
||||
***********************************************************************************************************************************/
|
||||
/* Version identifier for this pg_control format */
|
||||
#define PG_CONTROL_VERSION 942
|
||||
|
||||
/*
|
||||
* Body of CheckPoint XLOG records. This is declared here because we keep
|
||||
* a copy of the latest one in pg_control for possible disaster recovery.
|
||||
* Changing this struct requires a PG_CONTROL_VERSION bump.
|
||||
*/
|
||||
typedef struct CheckPoint
|
||||
{
|
||||
XLogRecPtr redo; /* next RecPtr available when we began to
|
||||
* create CheckPoint (i.e. REDO start point) */
|
||||
TimeLineID ThisTimeLineID; /* current TLI */
|
||||
TimeLineID PrevTimeLineID; /* previous TLI, if this record begins a new
|
||||
* timeline (equals ThisTimeLineID otherwise) */
|
||||
bool fullPageWrites; /* current full_page_writes */
|
||||
uint32 nextXidEpoch; /* higher-order bits of nextXid */
|
||||
TransactionId nextXid; /* next free XID */
|
||||
Oid nextOid; /* next free OID */
|
||||
MultiXactId nextMulti; /* next free MultiXactId */
|
||||
MultiXactOffset nextMultiOffset; /* next free MultiXact offset */
|
||||
TransactionId oldestXid; /* cluster-wide minimum datfrozenxid */
|
||||
Oid oldestXidDB; /* database with minimum datfrozenxid */
|
||||
MultiXactId oldestMulti; /* cluster-wide minimum datminmxid */
|
||||
Oid oldestMultiDB; /* database with minimum datminmxid */
|
||||
pg_time_t time; /* time stamp of checkpoint */
|
||||
|
||||
/*
|
||||
* Oldest XID still running. This is only needed to initialize hot standby
|
||||
* mode from an online checkpoint, so we only bother calculating this for
|
||||
* online checkpoints and only when wal_level is hot_standby. Otherwise
|
||||
* it's set to InvalidTransactionId.
|
||||
*/
|
||||
TransactionId oldestActiveXid;
|
||||
} CheckPoint;
|
||||
|
||||
/*
|
||||
* System status indicator. Note this is stored in pg_control; if you change
|
||||
* it, you must bump PG_CONTROL_VERSION
|
||||
*/
|
||||
typedef enum DBState
|
||||
{
|
||||
DB_STARTUP = 0,
|
||||
DB_SHUTDOWNED,
|
||||
DB_SHUTDOWNED_IN_RECOVERY,
|
||||
DB_SHUTDOWNING,
|
||||
DB_IN_CRASH_RECOVERY,
|
||||
DB_IN_ARCHIVE_RECOVERY,
|
||||
DB_IN_PRODUCTION
|
||||
} DBState;
|
||||
|
||||
/*
|
||||
* Contents of pg_control.
|
||||
*
|
||||
* NOTE: try to keep this under 512 bytes so that it will fit on one physical
|
||||
* sector of typical disk drives. This reduces the odds of corruption due to
|
||||
* power failure midway through a write.
|
||||
*/
|
||||
typedef struct ControlFileData
|
||||
{
|
||||
/*
|
||||
* Unique system identifier --- to ensure we match up xlog files with the
|
||||
* installation that produced them.
|
||||
*/
|
||||
uint64 system_identifier;
|
||||
|
||||
/*
|
||||
* Version identifier information. Keep these fields at the same offset,
|
||||
* especially pg_control_version; they won't be real useful if they move
|
||||
* around. (For historical reasons they must be 8 bytes into the file
|
||||
* rather than immediately at the front.)
|
||||
*
|
||||
* pg_control_version identifies the format of pg_control itself.
|
||||
* catalog_version_no identifies the format of the system catalogs.
|
||||
*
|
||||
* There are additional version identifiers in individual files; for
|
||||
* example, WAL logs contain per-page magic numbers that can serve as
|
||||
* version cues for the WAL log.
|
||||
*/
|
||||
uint32 pg_control_version; /* PG_CONTROL_VERSION */
|
||||
uint32 catalog_version_no; /* see catversion.h */
|
||||
|
||||
/*
|
||||
* System status data
|
||||
*/
|
||||
DBState state; /* see enum above */
|
||||
pg_time_t time; /* time stamp of last pg_control update */
|
||||
XLogRecPtr checkPoint; /* last check point record ptr */
|
||||
XLogRecPtr prevCheckPoint; /* previous check point record ptr */
|
||||
|
||||
CheckPoint checkPointCopy; /* copy of last check point record */
|
||||
|
||||
XLogRecPtr unloggedLSN; /* current fake LSN value, for unlogged rels */
|
||||
|
||||
/*
|
||||
* These two values determine the minimum point we must recover up to
|
||||
* before starting up:
|
||||
*
|
||||
* minRecoveryPoint is updated to the latest replayed LSN whenever we
|
||||
* flush a data change during archive recovery. That guards against
|
||||
* starting archive recovery, aborting it, and restarting with an earlier
|
||||
* stop location. If we've already flushed data changes from WAL record X
|
||||
* to disk, we mustn't start up until we reach X again. Zero when not
|
||||
* doing archive recovery.
|
||||
*
|
||||
* backupStartPoint is the redo pointer of the backup start checkpoint, if
|
||||
* we are recovering from an online backup and haven't reached the end of
|
||||
* backup yet. It is reset to zero when the end of backup is reached, and
|
||||
* we mustn't start up before that. A boolean would suffice otherwise, but
|
||||
* we use the redo pointer as a cross-check when we see an end-of-backup
|
||||
* record, to make sure the end-of-backup record corresponds the base
|
||||
* backup we're recovering from.
|
||||
*
|
||||
* backupEndPoint is the backup end location, if we are recovering from an
|
||||
* online backup which was taken from the standby and haven't reached the
|
||||
* end of backup yet. It is initialized to the minimum recovery point in
|
||||
* pg_control which was backed up last. It is reset to zero when the end
|
||||
* of backup is reached, and we mustn't start up before that.
|
||||
*
|
||||
* If backupEndRequired is true, we know for sure that we're restoring
|
||||
* from a backup, and must see a backup-end record before we can safely
|
||||
* start up. If it's false, but backupStartPoint is set, a backup_label
|
||||
* file was found at startup but it may have been a leftover from a stray
|
||||
* pg_start_backup() call, not accompanied by pg_stop_backup().
|
||||
*/
|
||||
XLogRecPtr minRecoveryPoint;
|
||||
TimeLineID minRecoveryPointTLI;
|
||||
XLogRecPtr backupStartPoint;
|
||||
XLogRecPtr backupEndPoint;
|
||||
bool backupEndRequired;
|
||||
|
||||
/*
|
||||
* Parameter settings that determine if the WAL can be used for archival
|
||||
* or hot standby.
|
||||
*/
|
||||
int wal_level;
|
||||
bool wal_log_hints;
|
||||
int MaxConnections;
|
||||
int max_worker_processes;
|
||||
int max_prepared_xacts;
|
||||
int max_locks_per_xact;
|
||||
|
||||
/*
|
||||
* This data is used to check for hardware-architecture compatibility of
|
||||
* the database and the backend executable. We need not check endianness
|
||||
* explicitly, since the pg_control version will surely look wrong to a
|
||||
* machine of different endianness, but we do need to worry about MAXALIGN
|
||||
* and floating-point format. (Note: storage layout nominally also
|
||||
* depends on SHORTALIGN and INTALIGN, but in practice these are the same
|
||||
* on all architectures of interest.)
|
||||
*
|
||||
* Testing just one double value is not a very bulletproof test for
|
||||
* floating-point compatibility, but it will catch most cases.
|
||||
*/
|
||||
uint32 maxAlign; /* alignment requirement for tuples */
|
||||
double floatFormat; /* constant 1234567.0 */
|
||||
#define FLOATFORMAT_VALUE 1234567.0
|
||||
|
||||
/*
|
||||
* This data is used to make sure that configuration of this database is
|
||||
* compatible with the backend executable.
|
||||
*/
|
||||
uint32 blcksz; /* data block size for this DB */
|
||||
uint32 relseg_size; /* blocks per segment of large relation */
|
||||
|
||||
uint32 xlog_blcksz; /* block size within WAL files */
|
||||
uint32 xlog_seg_size; /* size of each WAL segment */
|
||||
|
||||
uint32 nameDataLen; /* catalog name field width */
|
||||
uint32 indexMaxKeys; /* max number of columns in an index */
|
||||
|
||||
uint32 toast_max_chunk_size; /* chunk size in TOAST tables */
|
||||
uint32 loblksize; /* chunk size in pg_largeobject */
|
||||
|
||||
/* flag indicating internal format of timestamp, interval, time */
|
||||
bool enableIntTimes; /* int64 storage enabled? */
|
||||
|
||||
/* flags indicating pass-by-value status of various types */
|
||||
bool float4ByVal; /* float4 pass-by-value? */
|
||||
bool float8ByVal; /* float8, int8, etc pass-by-value? */
|
||||
|
||||
/* Are data pages protected by checksums? Zero if no checksum version */
|
||||
uint32 data_checksum_version;
|
||||
|
||||
/* CRC of all above ... MUST BE LAST! */
|
||||
pg_crc32 crc;
|
||||
} ControlFileData;
|
||||
85
src/postgres/interface/v094.c
Normal file
85
src/postgres/interface/v094.c
Normal file
@ -0,0 +1,85 @@
|
||||
/***********************************************************************************************************************************
|
||||
PostgreSQL 9.4 Interface
|
||||
***********************************************************************************************************************************/
|
||||
#include "common/debug.h"
|
||||
#include "common/log.h"
|
||||
#include "postgres/interface/v094.h"
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Include PostgreSQL Types
|
||||
***********************************************************************************************************************************/
|
||||
#include "postgres/interface/v094.auto.c"
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Is the control file for this version of PostgreSQL?
|
||||
***********************************************************************************************************************************/
|
||||
bool
|
||||
pgInterfaceIs094(const Buffer *controlFile)
|
||||
{
|
||||
FUNCTION_TEST_BEGIN();
|
||||
FUNCTION_TEST_PARAM(BUFFER, controlFile);
|
||||
|
||||
FUNCTION_TEST_ASSERT(controlFile != NULL);
|
||||
FUNCTION_TEST_END();
|
||||
|
||||
ControlFileData *controlData = (ControlFileData *)bufPtr(controlFile);
|
||||
|
||||
FUNCTION_TEST_RESULT(
|
||||
BOOL, controlData->pg_control_version == PG_CONTROL_VERSION && controlData->catalog_version_no == CATALOG_VERSION_NO);
|
||||
}
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Get information from pg_control in a common format
|
||||
***********************************************************************************************************************************/
|
||||
PgControl
|
||||
pgInterfaceControl094(const Buffer *controlFile)
|
||||
{
|
||||
FUNCTION_DEBUG_BEGIN(logLevelTrace);
|
||||
FUNCTION_DEBUG_PARAM(BUFFER, controlFile);
|
||||
|
||||
FUNCTION_TEST_ASSERT(controlFile != NULL);
|
||||
FUNCTION_TEST_ASSERT(pgInterfaceIs094(controlFile));
|
||||
FUNCTION_DEBUG_END();
|
||||
|
||||
PgControl result = {0};
|
||||
ControlFileData *controlData = (ControlFileData *)bufPtr(controlFile);
|
||||
|
||||
result.systemId = controlData->system_identifier;
|
||||
result.controlVersion = controlData->pg_control_version;
|
||||
result.catalogVersion = controlData->catalog_version_no;
|
||||
|
||||
result.pageSize = controlData->blcksz;
|
||||
result.walSegmentSize = controlData->xlog_seg_size;
|
||||
|
||||
result.pageChecksum = controlData->data_checksum_version != 0;
|
||||
|
||||
FUNCTION_DEBUG_RESULT(PG_CONTROL, result);
|
||||
}
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Create pg_control for testing
|
||||
***********************************************************************************************************************************/
|
||||
#ifdef DEBUG
|
||||
|
||||
void
|
||||
pgInterfaceControlTest094(PgControl pgControl, Buffer *buffer)
|
||||
{
|
||||
FUNCTION_TEST_BEGIN();
|
||||
FUNCTION_TEST_PARAM(PG_CONTROL, pgControl);
|
||||
FUNCTION_TEST_END();
|
||||
|
||||
ControlFileData *controlData = (ControlFileData *)bufPtr(buffer);
|
||||
|
||||
controlData->system_identifier = pgControl.systemId;
|
||||
controlData->pg_control_version = pgControl.controlVersion == 0 ? PG_CONTROL_VERSION : pgControl.controlVersion;
|
||||
controlData->catalog_version_no = pgControl.catalogVersion == 0 ? CATALOG_VERSION_NO : pgControl.catalogVersion;
|
||||
|
||||
controlData->blcksz = pgControl.pageSize;
|
||||
controlData->xlog_seg_size = pgControl.walSegmentSize;
|
||||
|
||||
controlData->data_checksum_version = pgControl.pageChecksum;
|
||||
|
||||
FUNCTION_TEST_RESULT_VOID();
|
||||
}
|
||||
|
||||
#endif
|
||||
22
src/postgres/interface/v094.h
Normal file
22
src/postgres/interface/v094.h
Normal file
@ -0,0 +1,22 @@
|
||||
/***********************************************************************************************************************************
|
||||
PostgreSQL 9.4 Interface
|
||||
***********************************************************************************************************************************/
|
||||
#ifndef POSTGRES_INTERFACE_INTERFACE094_H
|
||||
#define POSTGRES_INTERFACE_INTERFACE094_H
|
||||
|
||||
#include "postgres/interface.h"
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Functions
|
||||
***********************************************************************************************************************************/
|
||||
bool pgInterfaceIs094(const Buffer *controlFile);
|
||||
PgControl pgInterfaceControl094(const Buffer *controlFile);
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Test Functions
|
||||
***********************************************************************************************************************************/
|
||||
#ifdef DEBUG
|
||||
void pgInterfaceControlTest094(PgControl pgControl, Buffer *buffer);
|
||||
#endif
|
||||
|
||||
#endif
|
||||
270
src/postgres/interface/v095.auto.c
Normal file
270
src/postgres/interface/v095.auto.c
Normal file
@ -0,0 +1,270 @@
|
||||
/***********************************************************************************************************************************
|
||||
PostgreSQL 9.5 Types
|
||||
***********************************************************************************************************************************/
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Types from src/include/c.h
|
||||
***********************************************************************************************************************************/
|
||||
typedef int64_t int64;
|
||||
typedef uint32_t uint32;
|
||||
typedef uint64_t uint64;
|
||||
|
||||
typedef uint32 TransactionId;
|
||||
|
||||
/* MultiXactId must be equivalent to TransactionId, to fit in t_xmax */
|
||||
typedef TransactionId MultiXactId;
|
||||
|
||||
typedef uint32 MultiXactOffset;
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Types from src/include/pgtime.h
|
||||
***********************************************************************************************************************************/
|
||||
/*
|
||||
* The API of this library is generally similar to the corresponding
|
||||
* C library functions, except that we use pg_time_t which (we hope) is
|
||||
* 64 bits wide, and which is most definitely signed not unsigned.
|
||||
*/
|
||||
typedef int64 pg_time_t;
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Types from src/include/postgres_ext.h
|
||||
***********************************************************************************************************************************/
|
||||
/*
|
||||
* Object ID is a fundamental type in Postgres.
|
||||
*/
|
||||
typedef unsigned int Oid;
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Types from src/include/port/pg_crc32c.h
|
||||
***********************************************************************************************************************************/
|
||||
typedef uint32 pg_crc32c;
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Types from src/include/access/xlogdefs.h
|
||||
***********************************************************************************************************************************/
|
||||
/*
|
||||
* Pointer to a location in the XLOG. These pointers are 64 bits wide,
|
||||
* because we don't want them ever to overflow.
|
||||
*/
|
||||
typedef uint64 XLogRecPtr;
|
||||
|
||||
/*
|
||||
* TimeLineID (TLI) - identifies different database histories to prevent
|
||||
* confusion after restoring a prior state of a database installation.
|
||||
* TLI does not change in a normal stop/restart of the database (including
|
||||
* crash-and-recover cases); but we must assign a new TLI after doing
|
||||
* a recovery to a prior state, a/k/a point-in-time recovery. This makes
|
||||
* the new WAL logfile sequence we generate distinguishable from the
|
||||
* sequence that was generated in the previous incarnation.
|
||||
*/
|
||||
typedef uint32 TimeLineID;
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Types from src/include/catalog/catversion.h
|
||||
***********************************************************************************************************************************/
|
||||
/*
|
||||
* We could use anything we wanted for version numbers, but I recommend
|
||||
* following the "YYYYMMDDN" style often used for DNS zone serial numbers.
|
||||
* YYYYMMDD are the date of the change, and N is the number of the change
|
||||
* on that day. (Hopefully we'll never commit ten independent sets of
|
||||
* catalog changes on the same day...)
|
||||
*/
|
||||
|
||||
/* yyyymmddN */
|
||||
#define CATALOG_VERSION_NO 201510051
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Types from src/include/catalog/pg_control.h
|
||||
***********************************************************************************************************************************/
|
||||
/* Version identifier for this pg_control format */
|
||||
#define PG_CONTROL_VERSION 942
|
||||
|
||||
/*
|
||||
* Body of CheckPoint XLOG records. This is declared here because we keep
|
||||
* a copy of the latest one in pg_control for possible disaster recovery.
|
||||
* Changing this struct requires a PG_CONTROL_VERSION bump.
|
||||
*/
|
||||
typedef struct CheckPoint
|
||||
{
|
||||
XLogRecPtr redo; /* next RecPtr available when we began to
|
||||
* create CheckPoint (i.e. REDO start point) */
|
||||
TimeLineID ThisTimeLineID; /* current TLI */
|
||||
TimeLineID PrevTimeLineID; /* previous TLI, if this record begins a new
|
||||
* timeline (equals ThisTimeLineID otherwise) */
|
||||
bool fullPageWrites; /* current full_page_writes */
|
||||
uint32 nextXidEpoch; /* higher-order bits of nextXid */
|
||||
TransactionId nextXid; /* next free XID */
|
||||
Oid nextOid; /* next free OID */
|
||||
MultiXactId nextMulti; /* next free MultiXactId */
|
||||
MultiXactOffset nextMultiOffset; /* next free MultiXact offset */
|
||||
TransactionId oldestXid; /* cluster-wide minimum datfrozenxid */
|
||||
Oid oldestXidDB; /* database with minimum datfrozenxid */
|
||||
MultiXactId oldestMulti; /* cluster-wide minimum datminmxid */
|
||||
Oid oldestMultiDB; /* database with minimum datminmxid */
|
||||
pg_time_t time; /* time stamp of checkpoint */
|
||||
TransactionId oldestCommitTsXid; /* oldest Xid with valid commit
|
||||
* timestamp */
|
||||
TransactionId newestCommitTsXid; /* newest Xid with valid commit
|
||||
* timestamp */
|
||||
|
||||
/*
|
||||
* Oldest XID still running. This is only needed to initialize hot standby
|
||||
* mode from an online checkpoint, so we only bother calculating this for
|
||||
* online checkpoints and only when wal_level is hot_standby. Otherwise
|
||||
* it's set to InvalidTransactionId.
|
||||
*/
|
||||
TransactionId oldestActiveXid;
|
||||
} CheckPoint;
|
||||
|
||||
/*
|
||||
* System status indicator. Note this is stored in pg_control; if you change
|
||||
* it, you must bump PG_CONTROL_VERSION
|
||||
*/
|
||||
typedef enum DBState
|
||||
{
|
||||
DB_STARTUP = 0,
|
||||
DB_SHUTDOWNED,
|
||||
DB_SHUTDOWNED_IN_RECOVERY,
|
||||
DB_SHUTDOWNING,
|
||||
DB_IN_CRASH_RECOVERY,
|
||||
DB_IN_ARCHIVE_RECOVERY,
|
||||
DB_IN_PRODUCTION
|
||||
} DBState;
|
||||
|
||||
/*
|
||||
* Contents of pg_control.
|
||||
*
|
||||
* NOTE: try to keep this under 512 bytes so that it will fit on one physical
|
||||
* sector of typical disk drives. This reduces the odds of corruption due to
|
||||
* power failure midway through a write.
|
||||
*/
|
||||
typedef struct ControlFileData
|
||||
{
|
||||
/*
|
||||
* Unique system identifier --- to ensure we match up xlog files with the
|
||||
* installation that produced them.
|
||||
*/
|
||||
uint64 system_identifier;
|
||||
|
||||
/*
|
||||
* Version identifier information. Keep these fields at the same offset,
|
||||
* especially pg_control_version; they won't be real useful if they move
|
||||
* around. (For historical reasons they must be 8 bytes into the file
|
||||
* rather than immediately at the front.)
|
||||
*
|
||||
* pg_control_version identifies the format of pg_control itself.
|
||||
* catalog_version_no identifies the format of the system catalogs.
|
||||
*
|
||||
* There are additional version identifiers in individual files; for
|
||||
* example, WAL logs contain per-page magic numbers that can serve as
|
||||
* version cues for the WAL log.
|
||||
*/
|
||||
uint32 pg_control_version; /* PG_CONTROL_VERSION */
|
||||
uint32 catalog_version_no; /* see catversion.h */
|
||||
|
||||
/*
|
||||
* System status data
|
||||
*/
|
||||
DBState state; /* see enum above */
|
||||
pg_time_t time; /* time stamp of last pg_control update */
|
||||
XLogRecPtr checkPoint; /* last check point record ptr */
|
||||
XLogRecPtr prevCheckPoint; /* previous check point record ptr */
|
||||
|
||||
CheckPoint checkPointCopy; /* copy of last check point record */
|
||||
|
||||
XLogRecPtr unloggedLSN; /* current fake LSN value, for unlogged rels */
|
||||
|
||||
/*
|
||||
* These two values determine the minimum point we must recover up to
|
||||
* before starting up:
|
||||
*
|
||||
* minRecoveryPoint is updated to the latest replayed LSN whenever we
|
||||
* flush a data change during archive recovery. That guards against
|
||||
* starting archive recovery, aborting it, and restarting with an earlier
|
||||
* stop location. If we've already flushed data changes from WAL record X
|
||||
* to disk, we mustn't start up until we reach X again. Zero when not
|
||||
* doing archive recovery.
|
||||
*
|
||||
* backupStartPoint is the redo pointer of the backup start checkpoint, if
|
||||
* we are recovering from an online backup and haven't reached the end of
|
||||
* backup yet. It is reset to zero when the end of backup is reached, and
|
||||
* we mustn't start up before that. A boolean would suffice otherwise, but
|
||||
* we use the redo pointer as a cross-check when we see an end-of-backup
|
||||
* record, to make sure the end-of-backup record corresponds the base
|
||||
* backup we're recovering from.
|
||||
*
|
||||
* backupEndPoint is the backup end location, if we are recovering from an
|
||||
* online backup which was taken from the standby and haven't reached the
|
||||
* end of backup yet. It is initialized to the minimum recovery point in
|
||||
* pg_control which was backed up last. It is reset to zero when the end
|
||||
* of backup is reached, and we mustn't start up before that.
|
||||
*
|
||||
* If backupEndRequired is true, we know for sure that we're restoring
|
||||
* from a backup, and must see a backup-end record before we can safely
|
||||
* start up. If it's false, but backupStartPoint is set, a backup_label
|
||||
* file was found at startup but it may have been a leftover from a stray
|
||||
* pg_start_backup() call, not accompanied by pg_stop_backup().
|
||||
*/
|
||||
XLogRecPtr minRecoveryPoint;
|
||||
TimeLineID minRecoveryPointTLI;
|
||||
XLogRecPtr backupStartPoint;
|
||||
XLogRecPtr backupEndPoint;
|
||||
bool backupEndRequired;
|
||||
|
||||
/*
|
||||
* Parameter settings that determine if the WAL can be used for archival
|
||||
* or hot standby.
|
||||
*/
|
||||
int wal_level;
|
||||
bool wal_log_hints;
|
||||
int MaxConnections;
|
||||
int max_worker_processes;
|
||||
int max_prepared_xacts;
|
||||
int max_locks_per_xact;
|
||||
bool track_commit_timestamp;
|
||||
|
||||
/*
|
||||
* This data is used to check for hardware-architecture compatibility of
|
||||
* the database and the backend executable. We need not check endianness
|
||||
* explicitly, since the pg_control version will surely look wrong to a
|
||||
* machine of different endianness, but we do need to worry about MAXALIGN
|
||||
* and floating-point format. (Note: storage layout nominally also
|
||||
* depends on SHORTALIGN and INTALIGN, but in practice these are the same
|
||||
* on all architectures of interest.)
|
||||
*
|
||||
* Testing just one double value is not a very bulletproof test for
|
||||
* floating-point compatibility, but it will catch most cases.
|
||||
*/
|
||||
uint32 maxAlign; /* alignment requirement for tuples */
|
||||
double floatFormat; /* constant 1234567.0 */
|
||||
#define FLOATFORMAT_VALUE 1234567.0
|
||||
|
||||
/*
|
||||
* This data is used to make sure that configuration of this database is
|
||||
* compatible with the backend executable.
|
||||
*/
|
||||
uint32 blcksz; /* data block size for this DB */
|
||||
uint32 relseg_size; /* blocks per segment of large relation */
|
||||
|
||||
uint32 xlog_blcksz; /* block size within WAL files */
|
||||
uint32 xlog_seg_size; /* size of each WAL segment */
|
||||
|
||||
uint32 nameDataLen; /* catalog name field width */
|
||||
uint32 indexMaxKeys; /* max number of columns in an index */
|
||||
|
||||
uint32 toast_max_chunk_size; /* chunk size in TOAST tables */
|
||||
uint32 loblksize; /* chunk size in pg_largeobject */
|
||||
|
||||
/* flag indicating internal format of timestamp, interval, time */
|
||||
bool enableIntTimes; /* int64 storage enabled? */
|
||||
|
||||
/* flags indicating pass-by-value status of various types */
|
||||
bool float4ByVal; /* float4 pass-by-value? */
|
||||
bool float8ByVal; /* float8, int8, etc pass-by-value? */
|
||||
|
||||
/* Are data pages protected by checksums? Zero if no checksum version */
|
||||
uint32 data_checksum_version;
|
||||
|
||||
/* CRC of all above ... MUST BE LAST! */
|
||||
pg_crc32c crc;
|
||||
} ControlFileData;
|
||||
85
src/postgres/interface/v095.c
Normal file
85
src/postgres/interface/v095.c
Normal file
@ -0,0 +1,85 @@
|
||||
/***********************************************************************************************************************************
|
||||
PostgreSQL 9.5 Interface
|
||||
***********************************************************************************************************************************/
|
||||
#include "common/debug.h"
|
||||
#include "common/log.h"
|
||||
#include "postgres/interface/v095.h"
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Include PostgreSQL Types
|
||||
***********************************************************************************************************************************/
|
||||
#include "postgres/interface/v095.auto.c"
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Is the control file for this version of PostgreSQL?
|
||||
***********************************************************************************************************************************/
|
||||
bool
|
||||
pgInterfaceIs095(const Buffer *controlFile)
|
||||
{
|
||||
FUNCTION_TEST_BEGIN();
|
||||
FUNCTION_TEST_PARAM(BUFFER, controlFile);
|
||||
|
||||
FUNCTION_TEST_ASSERT(controlFile != NULL);
|
||||
FUNCTION_TEST_END();
|
||||
|
||||
ControlFileData *controlData = (ControlFileData *)bufPtr(controlFile);
|
||||
|
||||
FUNCTION_TEST_RESULT(
|
||||
BOOL, controlData->pg_control_version == PG_CONTROL_VERSION && controlData->catalog_version_no == CATALOG_VERSION_NO);
|
||||
}
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Get information from pg_control in a common format
|
||||
***********************************************************************************************************************************/
|
||||
PgControl
|
||||
pgInterfaceControl095(const Buffer *controlFile)
|
||||
{
|
||||
FUNCTION_DEBUG_BEGIN(logLevelTrace);
|
||||
FUNCTION_DEBUG_PARAM(BUFFER, controlFile);
|
||||
|
||||
FUNCTION_TEST_ASSERT(controlFile != NULL);
|
||||
FUNCTION_TEST_ASSERT(pgInterfaceIs095(controlFile));
|
||||
FUNCTION_DEBUG_END();
|
||||
|
||||
PgControl result = {0};
|
||||
ControlFileData *controlData = (ControlFileData *)bufPtr(controlFile);
|
||||
|
||||
result.systemId = controlData->system_identifier;
|
||||
result.controlVersion = controlData->pg_control_version;
|
||||
result.catalogVersion = controlData->catalog_version_no;
|
||||
|
||||
result.pageSize = controlData->blcksz;
|
||||
result.walSegmentSize = controlData->xlog_seg_size;
|
||||
|
||||
result.pageChecksum = controlData->data_checksum_version != 0;
|
||||
|
||||
FUNCTION_DEBUG_RESULT(PG_CONTROL, result);
|
||||
}
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Create pg_control for testing
|
||||
***********************************************************************************************************************************/
|
||||
#ifdef DEBUG
|
||||
|
||||
void
|
||||
pgInterfaceControlTest095(PgControl pgControl, Buffer *buffer)
|
||||
{
|
||||
FUNCTION_TEST_BEGIN();
|
||||
FUNCTION_TEST_PARAM(PG_CONTROL, pgControl);
|
||||
FUNCTION_TEST_END();
|
||||
|
||||
ControlFileData *controlData = (ControlFileData *)bufPtr(buffer);
|
||||
|
||||
controlData->system_identifier = pgControl.systemId;
|
||||
controlData->pg_control_version = pgControl.controlVersion == 0 ? PG_CONTROL_VERSION : pgControl.controlVersion;
|
||||
controlData->catalog_version_no = pgControl.catalogVersion == 0 ? CATALOG_VERSION_NO : pgControl.catalogVersion;
|
||||
|
||||
controlData->blcksz = pgControl.pageSize;
|
||||
controlData->xlog_seg_size = pgControl.walSegmentSize;
|
||||
|
||||
controlData->data_checksum_version = pgControl.pageChecksum;
|
||||
|
||||
FUNCTION_TEST_RESULT_VOID();
|
||||
}
|
||||
|
||||
#endif
|
||||
22
src/postgres/interface/v095.h
Normal file
22
src/postgres/interface/v095.h
Normal file
@ -0,0 +1,22 @@
|
||||
/***********************************************************************************************************************************
|
||||
PostgreSQL 9.5 Interface
|
||||
***********************************************************************************************************************************/
|
||||
#ifndef POSTGRES_INTERFACE_INTERFACE095_H
|
||||
#define POSTGRES_INTERFACE_INTERFACE095_H
|
||||
|
||||
#include "postgres/interface.h"
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Functions
|
||||
***********************************************************************************************************************************/
|
||||
bool pgInterfaceIs095(const Buffer *controlFile);
|
||||
PgControl pgInterfaceControl095(const Buffer *controlFile);
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Test Functions
|
||||
***********************************************************************************************************************************/
|
||||
#ifdef DEBUG
|
||||
void pgInterfaceControlTest095(PgControl pgControl, Buffer *buffer);
|
||||
#endif
|
||||
|
||||
#endif
|
||||
270
src/postgres/interface/v096.auto.c
Normal file
270
src/postgres/interface/v096.auto.c
Normal file
@ -0,0 +1,270 @@
|
||||
/***********************************************************************************************************************************
|
||||
PostgreSQL 9.6 Types
|
||||
***********************************************************************************************************************************/
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Types from src/include/c.h
|
||||
***********************************************************************************************************************************/
|
||||
typedef int64_t int64;
|
||||
typedef uint32_t uint32;
|
||||
typedef uint64_t uint64;
|
||||
|
||||
typedef uint32 TransactionId;
|
||||
|
||||
/* MultiXactId must be equivalent to TransactionId, to fit in t_xmax */
|
||||
typedef TransactionId MultiXactId;
|
||||
|
||||
typedef uint32 MultiXactOffset;
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Types from src/include/pgtime.h
|
||||
***********************************************************************************************************************************/
|
||||
/*
|
||||
* The API of this library is generally similar to the corresponding
|
||||
* C library functions, except that we use pg_time_t which (we hope) is
|
||||
* 64 bits wide, and which is most definitely signed not unsigned.
|
||||
*/
|
||||
typedef int64 pg_time_t;
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Types from src/include/postgres_ext.h
|
||||
***********************************************************************************************************************************/
|
||||
/*
|
||||
* Object ID is a fundamental type in Postgres.
|
||||
*/
|
||||
typedef unsigned int Oid;
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Types from src/include/port/pg_crc32c.h
|
||||
***********************************************************************************************************************************/
|
||||
typedef uint32 pg_crc32c;
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Types from src/include/access/xlogdefs.h
|
||||
***********************************************************************************************************************************/
|
||||
/*
|
||||
* Pointer to a location in the XLOG. These pointers are 64 bits wide,
|
||||
* because we don't want them ever to overflow.
|
||||
*/
|
||||
typedef uint64 XLogRecPtr;
|
||||
|
||||
/*
|
||||
* TimeLineID (TLI) - identifies different database histories to prevent
|
||||
* confusion after restoring a prior state of a database installation.
|
||||
* TLI does not change in a normal stop/restart of the database (including
|
||||
* crash-and-recover cases); but we must assign a new TLI after doing
|
||||
* a recovery to a prior state, a/k/a point-in-time recovery. This makes
|
||||
* the new WAL logfile sequence we generate distinguishable from the
|
||||
* sequence that was generated in the previous incarnation.
|
||||
*/
|
||||
typedef uint32 TimeLineID;
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Types from src/include/catalog/catversion.h
|
||||
***********************************************************************************************************************************/
|
||||
/*
|
||||
* We could use anything we wanted for version numbers, but I recommend
|
||||
* following the "YYYYMMDDN" style often used for DNS zone serial numbers.
|
||||
* YYYYMMDD are the date of the change, and N is the number of the change
|
||||
* on that day. (Hopefully we'll never commit ten independent sets of
|
||||
* catalog changes on the same day...)
|
||||
*/
|
||||
|
||||
/* yyyymmddN */
|
||||
#define CATALOG_VERSION_NO 201608131
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Types from src/include/catalog/pg_control.h
|
||||
***********************************************************************************************************************************/
|
||||
/* Version identifier for this pg_control format */
|
||||
#define PG_CONTROL_VERSION 960
|
||||
|
||||
/*
|
||||
* Body of CheckPoint XLOG records. This is declared here because we keep
|
||||
* a copy of the latest one in pg_control for possible disaster recovery.
|
||||
* Changing this struct requires a PG_CONTROL_VERSION bump.
|
||||
*/
|
||||
typedef struct CheckPoint
|
||||
{
|
||||
XLogRecPtr redo; /* next RecPtr available when we began to
|
||||
* create CheckPoint (i.e. REDO start point) */
|
||||
TimeLineID ThisTimeLineID; /* current TLI */
|
||||
TimeLineID PrevTimeLineID; /* previous TLI, if this record begins a new
|
||||
* timeline (equals ThisTimeLineID otherwise) */
|
||||
bool fullPageWrites; /* current full_page_writes */
|
||||
uint32 nextXidEpoch; /* higher-order bits of nextXid */
|
||||
TransactionId nextXid; /* next free XID */
|
||||
Oid nextOid; /* next free OID */
|
||||
MultiXactId nextMulti; /* next free MultiXactId */
|
||||
MultiXactOffset nextMultiOffset; /* next free MultiXact offset */
|
||||
TransactionId oldestXid; /* cluster-wide minimum datfrozenxid */
|
||||
Oid oldestXidDB; /* database with minimum datfrozenxid */
|
||||
MultiXactId oldestMulti; /* cluster-wide minimum datminmxid */
|
||||
Oid oldestMultiDB; /* database with minimum datminmxid */
|
||||
pg_time_t time; /* time stamp of checkpoint */
|
||||
TransactionId oldestCommitTsXid; /* oldest Xid with valid commit
|
||||
* timestamp */
|
||||
TransactionId newestCommitTsXid; /* newest Xid with valid commit
|
||||
* timestamp */
|
||||
|
||||
/*
|
||||
* Oldest XID still running. This is only needed to initialize hot standby
|
||||
* mode from an online checkpoint, so we only bother calculating this for
|
||||
* online checkpoints and only when wal_level is replica. Otherwise it's
|
||||
* set to InvalidTransactionId.
|
||||
*/
|
||||
TransactionId oldestActiveXid;
|
||||
} CheckPoint;
|
||||
|
||||
/*
|
||||
* System status indicator. Note this is stored in pg_control; if you change
|
||||
* it, you must bump PG_CONTROL_VERSION
|
||||
*/
|
||||
typedef enum DBState
|
||||
{
|
||||
DB_STARTUP = 0,
|
||||
DB_SHUTDOWNED,
|
||||
DB_SHUTDOWNED_IN_RECOVERY,
|
||||
DB_SHUTDOWNING,
|
||||
DB_IN_CRASH_RECOVERY,
|
||||
DB_IN_ARCHIVE_RECOVERY,
|
||||
DB_IN_PRODUCTION
|
||||
} DBState;
|
||||
|
||||
/*
|
||||
* Contents of pg_control.
|
||||
*
|
||||
* NOTE: try to keep this under 512 bytes so that it will fit on one physical
|
||||
* sector of typical disk drives. This reduces the odds of corruption due to
|
||||
* power failure midway through a write.
|
||||
*/
|
||||
typedef struct ControlFileData
|
||||
{
|
||||
/*
|
||||
* Unique system identifier --- to ensure we match up xlog files with the
|
||||
* installation that produced them.
|
||||
*/
|
||||
uint64 system_identifier;
|
||||
|
||||
/*
|
||||
* Version identifier information. Keep these fields at the same offset,
|
||||
* especially pg_control_version; they won't be real useful if they move
|
||||
* around. (For historical reasons they must be 8 bytes into the file
|
||||
* rather than immediately at the front.)
|
||||
*
|
||||
* pg_control_version identifies the format of pg_control itself.
|
||||
* catalog_version_no identifies the format of the system catalogs.
|
||||
*
|
||||
* There are additional version identifiers in individual files; for
|
||||
* example, WAL logs contain per-page magic numbers that can serve as
|
||||
* version cues for the WAL log.
|
||||
*/
|
||||
uint32 pg_control_version; /* PG_CONTROL_VERSION */
|
||||
uint32 catalog_version_no; /* see catversion.h */
|
||||
|
||||
/*
|
||||
* System status data
|
||||
*/
|
||||
DBState state; /* see enum above */
|
||||
pg_time_t time; /* time stamp of last pg_control update */
|
||||
XLogRecPtr checkPoint; /* last check point record ptr */
|
||||
XLogRecPtr prevCheckPoint; /* previous check point record ptr */
|
||||
|
||||
CheckPoint checkPointCopy; /* copy of last check point record */
|
||||
|
||||
XLogRecPtr unloggedLSN; /* current fake LSN value, for unlogged rels */
|
||||
|
||||
/*
|
||||
* These two values determine the minimum point we must recover up to
|
||||
* before starting up:
|
||||
*
|
||||
* minRecoveryPoint is updated to the latest replayed LSN whenever we
|
||||
* flush a data change during archive recovery. That guards against
|
||||
* starting archive recovery, aborting it, and restarting with an earlier
|
||||
* stop location. If we've already flushed data changes from WAL record X
|
||||
* to disk, we mustn't start up until we reach X again. Zero when not
|
||||
* doing archive recovery.
|
||||
*
|
||||
* backupStartPoint is the redo pointer of the backup start checkpoint, if
|
||||
* we are recovering from an online backup and haven't reached the end of
|
||||
* backup yet. It is reset to zero when the end of backup is reached, and
|
||||
* we mustn't start up before that. A boolean would suffice otherwise, but
|
||||
* we use the redo pointer as a cross-check when we see an end-of-backup
|
||||
* record, to make sure the end-of-backup record corresponds the base
|
||||
* backup we're recovering from.
|
||||
*
|
||||
* backupEndPoint is the backup end location, if we are recovering from an
|
||||
* online backup which was taken from the standby and haven't reached the
|
||||
* end of backup yet. It is initialized to the minimum recovery point in
|
||||
* pg_control which was backed up last. It is reset to zero when the end
|
||||
* of backup is reached, and we mustn't start up before that.
|
||||
*
|
||||
* If backupEndRequired is true, we know for sure that we're restoring
|
||||
* from a backup, and must see a backup-end record before we can safely
|
||||
* start up. If it's false, but backupStartPoint is set, a backup_label
|
||||
* file was found at startup but it may have been a leftover from a stray
|
||||
* pg_start_backup() call, not accompanied by pg_stop_backup().
|
||||
*/
|
||||
XLogRecPtr minRecoveryPoint;
|
||||
TimeLineID minRecoveryPointTLI;
|
||||
XLogRecPtr backupStartPoint;
|
||||
XLogRecPtr backupEndPoint;
|
||||
bool backupEndRequired;
|
||||
|
||||
/*
|
||||
* Parameter settings that determine if the WAL can be used for archival
|
||||
* or hot standby.
|
||||
*/
|
||||
int wal_level;
|
||||
bool wal_log_hints;
|
||||
int MaxConnections;
|
||||
int max_worker_processes;
|
||||
int max_prepared_xacts;
|
||||
int max_locks_per_xact;
|
||||
bool track_commit_timestamp;
|
||||
|
||||
/*
|
||||
* This data is used to check for hardware-architecture compatibility of
|
||||
* the database and the backend executable. We need not check endianness
|
||||
* explicitly, since the pg_control version will surely look wrong to a
|
||||
* machine of different endianness, but we do need to worry about MAXALIGN
|
||||
* and floating-point format. (Note: storage layout nominally also
|
||||
* depends on SHORTALIGN and INTALIGN, but in practice these are the same
|
||||
* on all architectures of interest.)
|
||||
*
|
||||
* Testing just one double value is not a very bulletproof test for
|
||||
* floating-point compatibility, but it will catch most cases.
|
||||
*/
|
||||
uint32 maxAlign; /* alignment requirement for tuples */
|
||||
double floatFormat; /* constant 1234567.0 */
|
||||
#define FLOATFORMAT_VALUE 1234567.0
|
||||
|
||||
/*
|
||||
* This data is used to make sure that configuration of this database is
|
||||
* compatible with the backend executable.
|
||||
*/
|
||||
uint32 blcksz; /* data block size for this DB */
|
||||
uint32 relseg_size; /* blocks per segment of large relation */
|
||||
|
||||
uint32 xlog_blcksz; /* block size within WAL files */
|
||||
uint32 xlog_seg_size; /* size of each WAL segment */
|
||||
|
||||
uint32 nameDataLen; /* catalog name field width */
|
||||
uint32 indexMaxKeys; /* max number of columns in an index */
|
||||
|
||||
uint32 toast_max_chunk_size; /* chunk size in TOAST tables */
|
||||
uint32 loblksize; /* chunk size in pg_largeobject */
|
||||
|
||||
/* flag indicating internal format of timestamp, interval, time */
|
||||
bool enableIntTimes; /* int64 storage enabled? */
|
||||
|
||||
/* flags indicating pass-by-value status of various types */
|
||||
bool float4ByVal; /* float4 pass-by-value? */
|
||||
bool float8ByVal; /* float8, int8, etc pass-by-value? */
|
||||
|
||||
/* Are data pages protected by checksums? Zero if no checksum version */
|
||||
uint32 data_checksum_version;
|
||||
|
||||
/* CRC of all above ... MUST BE LAST! */
|
||||
pg_crc32c crc;
|
||||
} ControlFileData;
|
||||
85
src/postgres/interface/v096.c
Normal file
85
src/postgres/interface/v096.c
Normal file
@ -0,0 +1,85 @@
|
||||
/***********************************************************************************************************************************
|
||||
PostgreSQL 9.6 Interface
|
||||
***********************************************************************************************************************************/
|
||||
#include "common/debug.h"
|
||||
#include "common/log.h"
|
||||
#include "postgres/interface/v096.h"
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Include PostgreSQL Types
|
||||
***********************************************************************************************************************************/
|
||||
#include "postgres/interface/v096.auto.c"
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Is the control file for this version of PostgreSQL?
|
||||
***********************************************************************************************************************************/
|
||||
bool
|
||||
pgInterfaceIs096(const Buffer *controlFile)
|
||||
{
|
||||
FUNCTION_TEST_BEGIN();
|
||||
FUNCTION_TEST_PARAM(BUFFER, controlFile);
|
||||
|
||||
FUNCTION_TEST_ASSERT(controlFile != NULL);
|
||||
FUNCTION_TEST_END();
|
||||
|
||||
ControlFileData *controlData = (ControlFileData *)bufPtr(controlFile);
|
||||
|
||||
FUNCTION_TEST_RESULT(
|
||||
BOOL, controlData->pg_control_version == PG_CONTROL_VERSION && controlData->catalog_version_no == CATALOG_VERSION_NO);
|
||||
}
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Get information from pg_control in a common format
|
||||
***********************************************************************************************************************************/
|
||||
PgControl
|
||||
pgInterfaceControl096(const Buffer *controlFile)
|
||||
{
|
||||
FUNCTION_DEBUG_BEGIN(logLevelTrace);
|
||||
FUNCTION_DEBUG_PARAM(BUFFER, controlFile);
|
||||
|
||||
FUNCTION_TEST_ASSERT(controlFile != NULL);
|
||||
FUNCTION_TEST_ASSERT(pgInterfaceIs096(controlFile));
|
||||
FUNCTION_DEBUG_END();
|
||||
|
||||
PgControl result = {0};
|
||||
ControlFileData *controlData = (ControlFileData *)bufPtr(controlFile);
|
||||
|
||||
result.systemId = controlData->system_identifier;
|
||||
result.controlVersion = controlData->pg_control_version;
|
||||
result.catalogVersion = controlData->catalog_version_no;
|
||||
|
||||
result.pageSize = controlData->blcksz;
|
||||
result.walSegmentSize = controlData->xlog_seg_size;
|
||||
|
||||
result.pageChecksum = controlData->data_checksum_version != 0;
|
||||
|
||||
FUNCTION_DEBUG_RESULT(PG_CONTROL, result);
|
||||
}
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Create pg_control for testing
|
||||
***********************************************************************************************************************************/
|
||||
#ifdef DEBUG
|
||||
|
||||
void
|
||||
pgInterfaceControlTest096(PgControl pgControl, Buffer *buffer)
|
||||
{
|
||||
FUNCTION_TEST_BEGIN();
|
||||
FUNCTION_TEST_PARAM(PG_CONTROL, pgControl);
|
||||
FUNCTION_TEST_END();
|
||||
|
||||
ControlFileData *controlData = (ControlFileData *)bufPtr(buffer);
|
||||
|
||||
controlData->system_identifier = pgControl.systemId;
|
||||
controlData->pg_control_version = pgControl.controlVersion == 0 ? PG_CONTROL_VERSION : pgControl.controlVersion;
|
||||
controlData->catalog_version_no = pgControl.catalogVersion == 0 ? CATALOG_VERSION_NO : pgControl.catalogVersion;
|
||||
|
||||
controlData->blcksz = pgControl.pageSize;
|
||||
controlData->xlog_seg_size = pgControl.walSegmentSize;
|
||||
|
||||
controlData->data_checksum_version = pgControl.pageChecksum;
|
||||
|
||||
FUNCTION_TEST_RESULT_VOID();
|
||||
}
|
||||
|
||||
#endif
|
||||
22
src/postgres/interface/v096.h
Normal file
22
src/postgres/interface/v096.h
Normal file
@ -0,0 +1,22 @@
|
||||
/***********************************************************************************************************************************
|
||||
PostgreSQL 9.6 Interface
|
||||
***********************************************************************************************************************************/
|
||||
#ifndef POSTGRES_INTERFACE_INTERFACE096_H
|
||||
#define POSTGRES_INTERFACE_INTERFACE096_H
|
||||
|
||||
#include "postgres/interface.h"
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Functions
|
||||
***********************************************************************************************************************************/
|
||||
bool pgInterfaceIs096(const Buffer *controlFile);
|
||||
PgControl pgInterfaceControl096(const Buffer *controlFile);
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Test Functions
|
||||
***********************************************************************************************************************************/
|
||||
#ifdef DEBUG
|
||||
void pgInterfaceControlTest096(PgControl pgControl, Buffer *buffer);
|
||||
#endif
|
||||
|
||||
#endif
|
||||
273
src/postgres/interface/v100.auto.c
Normal file
273
src/postgres/interface/v100.auto.c
Normal file
@ -0,0 +1,273 @@
|
||||
/***********************************************************************************************************************************
|
||||
PostgreSQL 10 Types
|
||||
***********************************************************************************************************************************/
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Types from src/include/c.h
|
||||
***********************************************************************************************************************************/
|
||||
typedef int64_t int64;
|
||||
typedef uint32_t uint32;
|
||||
typedef uint64_t uint64;
|
||||
|
||||
typedef uint32 TransactionId;
|
||||
|
||||
/* MultiXactId must be equivalent to TransactionId, to fit in t_xmax */
|
||||
typedef TransactionId MultiXactId;
|
||||
|
||||
typedef uint32 MultiXactOffset;
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Types from src/include/pgtime.h
|
||||
***********************************************************************************************************************************/
|
||||
/*
|
||||
* The API of this library is generally similar to the corresponding
|
||||
* C library functions, except that we use pg_time_t which (we hope) is
|
||||
* 64 bits wide, and which is most definitely signed not unsigned.
|
||||
*/
|
||||
typedef int64 pg_time_t;
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Types from src/include/postgres_ext.h
|
||||
***********************************************************************************************************************************/
|
||||
/*
|
||||
* Object ID is a fundamental type in Postgres.
|
||||
*/
|
||||
typedef unsigned int Oid;
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Types from src/include/port/pg_crc32c.h
|
||||
***********************************************************************************************************************************/
|
||||
typedef uint32 pg_crc32c;
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Types from src/include/access/xlogdefs.h
|
||||
***********************************************************************************************************************************/
|
||||
/*
|
||||
* Pointer to a location in the XLOG. These pointers are 64 bits wide,
|
||||
* because we don't want them ever to overflow.
|
||||
*/
|
||||
typedef uint64 XLogRecPtr;
|
||||
|
||||
/*
|
||||
* TimeLineID (TLI) - identifies different database histories to prevent
|
||||
* confusion after restoring a prior state of a database installation.
|
||||
* TLI does not change in a normal stop/restart of the database (including
|
||||
* crash-and-recover cases); but we must assign a new TLI after doing
|
||||
* a recovery to a prior state, a/k/a point-in-time recovery. This makes
|
||||
* the new WAL logfile sequence we generate distinguishable from the
|
||||
* sequence that was generated in the previous incarnation.
|
||||
*/
|
||||
typedef uint32 TimeLineID;
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Types from src/include/catalog/catversion.h
|
||||
***********************************************************************************************************************************/
|
||||
/*
|
||||
* We could use anything we wanted for version numbers, but I recommend
|
||||
* following the "YYYYMMDDN" style often used for DNS zone serial numbers.
|
||||
* YYYYMMDD are the date of the change, and N is the number of the change
|
||||
* on that day. (Hopefully we'll never commit ten independent sets of
|
||||
* catalog changes on the same day...)
|
||||
*/
|
||||
|
||||
/* yyyymmddN */
|
||||
#define CATALOG_VERSION_NO 201707211
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Types from src/include/catalog/pg_control.h
|
||||
***********************************************************************************************************************************/
|
||||
/* Version identifier for this pg_control format */
|
||||
#define PG_CONTROL_VERSION 1002
|
||||
|
||||
/* Nonce key length, see below */
|
||||
#define MOCK_AUTH_NONCE_LEN 32
|
||||
|
||||
/*
|
||||
* Body of CheckPoint XLOG records. This is declared here because we keep
|
||||
* a copy of the latest one in pg_control for possible disaster recovery.
|
||||
* Changing this struct requires a PG_CONTROL_VERSION bump.
|
||||
*/
|
||||
typedef struct CheckPoint
|
||||
{
|
||||
XLogRecPtr redo; /* next RecPtr available when we began to
|
||||
* create CheckPoint (i.e. REDO start point) */
|
||||
TimeLineID ThisTimeLineID; /* current TLI */
|
||||
TimeLineID PrevTimeLineID; /* previous TLI, if this record begins a new
|
||||
* timeline (equals ThisTimeLineID otherwise) */
|
||||
bool fullPageWrites; /* current full_page_writes */
|
||||
uint32 nextXidEpoch; /* higher-order bits of nextXid */
|
||||
TransactionId nextXid; /* next free XID */
|
||||
Oid nextOid; /* next free OID */
|
||||
MultiXactId nextMulti; /* next free MultiXactId */
|
||||
MultiXactOffset nextMultiOffset; /* next free MultiXact offset */
|
||||
TransactionId oldestXid; /* cluster-wide minimum datfrozenxid */
|
||||
Oid oldestXidDB; /* database with minimum datfrozenxid */
|
||||
MultiXactId oldestMulti; /* cluster-wide minimum datminmxid */
|
||||
Oid oldestMultiDB; /* database with minimum datminmxid */
|
||||
pg_time_t time; /* time stamp of checkpoint */
|
||||
TransactionId oldestCommitTsXid; /* oldest Xid with valid commit
|
||||
* timestamp */
|
||||
TransactionId newestCommitTsXid; /* newest Xid with valid commit
|
||||
* timestamp */
|
||||
|
||||
/*
|
||||
* Oldest XID still running. This is only needed to initialize hot standby
|
||||
* mode from an online checkpoint, so we only bother calculating this for
|
||||
* online checkpoints and only when wal_level is replica. Otherwise it's
|
||||
* set to InvalidTransactionId.
|
||||
*/
|
||||
TransactionId oldestActiveXid;
|
||||
} CheckPoint;
|
||||
|
||||
/*
|
||||
* System status indicator. Note this is stored in pg_control; if you change
|
||||
* it, you must bump PG_CONTROL_VERSION
|
||||
*/
|
||||
typedef enum DBState
|
||||
{
|
||||
DB_STARTUP = 0,
|
||||
DB_SHUTDOWNED,
|
||||
DB_SHUTDOWNED_IN_RECOVERY,
|
||||
DB_SHUTDOWNING,
|
||||
DB_IN_CRASH_RECOVERY,
|
||||
DB_IN_ARCHIVE_RECOVERY,
|
||||
DB_IN_PRODUCTION
|
||||
} DBState;
|
||||
|
||||
/*
|
||||
* Contents of pg_control.
|
||||
*/
|
||||
typedef struct ControlFileData
|
||||
{
|
||||
/*
|
||||
* Unique system identifier --- to ensure we match up xlog files with the
|
||||
* installation that produced them.
|
||||
*/
|
||||
uint64 system_identifier;
|
||||
|
||||
/*
|
||||
* Version identifier information. Keep these fields at the same offset,
|
||||
* especially pg_control_version; they won't be real useful if they move
|
||||
* around. (For historical reasons they must be 8 bytes into the file
|
||||
* rather than immediately at the front.)
|
||||
*
|
||||
* pg_control_version identifies the format of pg_control itself.
|
||||
* catalog_version_no identifies the format of the system catalogs.
|
||||
*
|
||||
* There are additional version identifiers in individual files; for
|
||||
* example, WAL logs contain per-page magic numbers that can serve as
|
||||
* version cues for the WAL log.
|
||||
*/
|
||||
uint32 pg_control_version; /* PG_CONTROL_VERSION */
|
||||
uint32 catalog_version_no; /* see catversion.h */
|
||||
|
||||
/*
|
||||
* System status data
|
||||
*/
|
||||
DBState state; /* see enum above */
|
||||
pg_time_t time; /* time stamp of last pg_control update */
|
||||
XLogRecPtr checkPoint; /* last check point record ptr */
|
||||
XLogRecPtr prevCheckPoint; /* previous check point record ptr */
|
||||
|
||||
CheckPoint checkPointCopy; /* copy of last check point record */
|
||||
|
||||
XLogRecPtr unloggedLSN; /* current fake LSN value, for unlogged rels */
|
||||
|
||||
/*
|
||||
* These two values determine the minimum point we must recover up to
|
||||
* before starting up:
|
||||
*
|
||||
* minRecoveryPoint is updated to the latest replayed LSN whenever we
|
||||
* flush a data change during archive recovery. That guards against
|
||||
* starting archive recovery, aborting it, and restarting with an earlier
|
||||
* stop location. If we've already flushed data changes from WAL record X
|
||||
* to disk, we mustn't start up until we reach X again. Zero when not
|
||||
* doing archive recovery.
|
||||
*
|
||||
* backupStartPoint is the redo pointer of the backup start checkpoint, if
|
||||
* we are recovering from an online backup and haven't reached the end of
|
||||
* backup yet. It is reset to zero when the end of backup is reached, and
|
||||
* we mustn't start up before that. A boolean would suffice otherwise, but
|
||||
* we use the redo pointer as a cross-check when we see an end-of-backup
|
||||
* record, to make sure the end-of-backup record corresponds the base
|
||||
* backup we're recovering from.
|
||||
*
|
||||
* backupEndPoint is the backup end location, if we are recovering from an
|
||||
* online backup which was taken from the standby and haven't reached the
|
||||
* end of backup yet. It is initialized to the minimum recovery point in
|
||||
* pg_control which was backed up last. It is reset to zero when the end
|
||||
* of backup is reached, and we mustn't start up before that.
|
||||
*
|
||||
* If backupEndRequired is true, we know for sure that we're restoring
|
||||
* from a backup, and must see a backup-end record before we can safely
|
||||
* start up. If it's false, but backupStartPoint is set, a backup_label
|
||||
* file was found at startup but it may have been a leftover from a stray
|
||||
* pg_start_backup() call, not accompanied by pg_stop_backup().
|
||||
*/
|
||||
XLogRecPtr minRecoveryPoint;
|
||||
TimeLineID minRecoveryPointTLI;
|
||||
XLogRecPtr backupStartPoint;
|
||||
XLogRecPtr backupEndPoint;
|
||||
bool backupEndRequired;
|
||||
|
||||
/*
|
||||
* Parameter settings that determine if the WAL can be used for archival
|
||||
* or hot standby.
|
||||
*/
|
||||
int wal_level;
|
||||
bool wal_log_hints;
|
||||
int MaxConnections;
|
||||
int max_worker_processes;
|
||||
int max_prepared_xacts;
|
||||
int max_locks_per_xact;
|
||||
bool track_commit_timestamp;
|
||||
|
||||
/*
|
||||
* This data is used to check for hardware-architecture compatibility of
|
||||
* the database and the backend executable. We need not check endianness
|
||||
* explicitly, since the pg_control version will surely look wrong to a
|
||||
* machine of different endianness, but we do need to worry about MAXALIGN
|
||||
* and floating-point format. (Note: storage layout nominally also
|
||||
* depends on SHORTALIGN and INTALIGN, but in practice these are the same
|
||||
* on all architectures of interest.)
|
||||
*
|
||||
* Testing just one double value is not a very bulletproof test for
|
||||
* floating-point compatibility, but it will catch most cases.
|
||||
*/
|
||||
uint32 maxAlign; /* alignment requirement for tuples */
|
||||
double floatFormat; /* constant 1234567.0 */
|
||||
#define FLOATFORMAT_VALUE 1234567.0
|
||||
|
||||
/*
|
||||
* This data is used to make sure that configuration of this database is
|
||||
* compatible with the backend executable.
|
||||
*/
|
||||
uint32 blcksz; /* data block size for this DB */
|
||||
uint32 relseg_size; /* blocks per segment of large relation */
|
||||
|
||||
uint32 xlog_blcksz; /* block size within WAL files */
|
||||
uint32 xlog_seg_size; /* size of each WAL segment */
|
||||
|
||||
uint32 nameDataLen; /* catalog name field width */
|
||||
uint32 indexMaxKeys; /* max number of columns in an index */
|
||||
|
||||
uint32 toast_max_chunk_size; /* chunk size in TOAST tables */
|
||||
uint32 loblksize; /* chunk size in pg_largeobject */
|
||||
|
||||
/* flags indicating pass-by-value status of various types */
|
||||
bool float4ByVal; /* float4 pass-by-value? */
|
||||
bool float8ByVal; /* float8, int8, etc pass-by-value? */
|
||||
|
||||
/* Are data pages protected by checksums? Zero if no checksum version */
|
||||
uint32 data_checksum_version;
|
||||
|
||||
/*
|
||||
* Random nonce, used in authentication requests that need to proceed
|
||||
* based on values that are cluster-unique, like a SASL exchange that
|
||||
* failed at an early stage.
|
||||
*/
|
||||
char mock_authentication_nonce[MOCK_AUTH_NONCE_LEN];
|
||||
|
||||
/* CRC of all above ... MUST BE LAST! */
|
||||
pg_crc32c crc;
|
||||
} ControlFileData;
|
||||
85
src/postgres/interface/v100.c
Normal file
85
src/postgres/interface/v100.c
Normal file
@ -0,0 +1,85 @@
|
||||
/***********************************************************************************************************************************
|
||||
PostgreSQL 10 Interface
|
||||
***********************************************************************************************************************************/
|
||||
#include "common/debug.h"
|
||||
#include "common/log.h"
|
||||
#include "postgres/interface/v100.h"
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Include PostgreSQL Types
|
||||
***********************************************************************************************************************************/
|
||||
#include "postgres/interface/v100.auto.c"
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Is the control file for this version of PostgreSQL?
|
||||
***********************************************************************************************************************************/
|
||||
bool
|
||||
pgInterfaceIs100(const Buffer *controlFile)
|
||||
{
|
||||
FUNCTION_TEST_BEGIN();
|
||||
FUNCTION_TEST_PARAM(BUFFER, controlFile);
|
||||
|
||||
FUNCTION_TEST_ASSERT(controlFile != NULL);
|
||||
FUNCTION_TEST_END();
|
||||
|
||||
ControlFileData *controlData = (ControlFileData *)bufPtr(controlFile);
|
||||
|
||||
FUNCTION_TEST_RESULT(
|
||||
BOOL, controlData->pg_control_version == PG_CONTROL_VERSION && controlData->catalog_version_no == CATALOG_VERSION_NO);
|
||||
}
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Get information from pg_control in a common format
|
||||
***********************************************************************************************************************************/
|
||||
PgControl
|
||||
pgInterfaceControl100(const Buffer *controlFile)
|
||||
{
|
||||
FUNCTION_DEBUG_BEGIN(logLevelTrace);
|
||||
FUNCTION_DEBUG_PARAM(BUFFER, controlFile);
|
||||
|
||||
FUNCTION_TEST_ASSERT(controlFile != NULL);
|
||||
FUNCTION_TEST_ASSERT(pgInterfaceIs100(controlFile));
|
||||
FUNCTION_DEBUG_END();
|
||||
|
||||
PgControl result = {0};
|
||||
ControlFileData *controlData = (ControlFileData *)bufPtr(controlFile);
|
||||
|
||||
result.systemId = controlData->system_identifier;
|
||||
result.controlVersion = controlData->pg_control_version;
|
||||
result.catalogVersion = controlData->catalog_version_no;
|
||||
|
||||
result.pageSize = controlData->blcksz;
|
||||
result.walSegmentSize = controlData->xlog_seg_size;
|
||||
|
||||
result.pageChecksum = controlData->data_checksum_version != 0;
|
||||
|
||||
FUNCTION_DEBUG_RESULT(PG_CONTROL, result);
|
||||
}
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Create pg_control for testing
|
||||
***********************************************************************************************************************************/
|
||||
#ifdef DEBUG
|
||||
|
||||
void
|
||||
pgInterfaceControlTest100(PgControl pgControl, Buffer *buffer)
|
||||
{
|
||||
FUNCTION_TEST_BEGIN();
|
||||
FUNCTION_TEST_PARAM(PG_CONTROL, pgControl);
|
||||
FUNCTION_TEST_END();
|
||||
|
||||
ControlFileData *controlData = (ControlFileData *)bufPtr(buffer);
|
||||
|
||||
controlData->system_identifier = pgControl.systemId;
|
||||
controlData->pg_control_version = pgControl.controlVersion == 0 ? PG_CONTROL_VERSION : pgControl.controlVersion;
|
||||
controlData->catalog_version_no = pgControl.catalogVersion == 0 ? CATALOG_VERSION_NO : pgControl.catalogVersion;
|
||||
|
||||
controlData->blcksz = pgControl.pageSize;
|
||||
controlData->xlog_seg_size = pgControl.walSegmentSize;
|
||||
|
||||
controlData->data_checksum_version = pgControl.pageChecksum;
|
||||
|
||||
FUNCTION_TEST_RESULT_VOID();
|
||||
}
|
||||
|
||||
#endif
|
||||
22
src/postgres/interface/v100.h
Normal file
22
src/postgres/interface/v100.h
Normal file
@ -0,0 +1,22 @@
|
||||
/***********************************************************************************************************************************
|
||||
PostgreSQL 10 Interface
|
||||
***********************************************************************************************************************************/
|
||||
#ifndef POSTGRES_INTERFACE_INTERFACE100_H
|
||||
#define POSTGRES_INTERFACE_INTERFACE100_H
|
||||
|
||||
#include "postgres/interface.h"
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Functions
|
||||
***********************************************************************************************************************************/
|
||||
bool pgInterfaceIs100(const Buffer *controlFile);
|
||||
PgControl pgInterfaceControl100(const Buffer *controlFile);
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Test Functions
|
||||
***********************************************************************************************************************************/
|
||||
#ifdef DEBUG
|
||||
void pgInterfaceControlTest100(PgControl pgControl, Buffer *buffer);
|
||||
#endif
|
||||
|
||||
#endif
|
||||
272
src/postgres/interface/v110.auto.c
Normal file
272
src/postgres/interface/v110.auto.c
Normal file
@ -0,0 +1,272 @@
|
||||
/***********************************************************************************************************************************
|
||||
PostgreSQL 11 Types
|
||||
***********************************************************************************************************************************/
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Types from src/include/c.h
|
||||
***********************************************************************************************************************************/
|
||||
typedef int64_t int64;
|
||||
typedef uint32_t uint32;
|
||||
typedef uint64_t uint64;
|
||||
|
||||
typedef uint32 TransactionId;
|
||||
|
||||
/* MultiXactId must be equivalent to TransactionId, to fit in t_xmax */
|
||||
typedef TransactionId MultiXactId;
|
||||
|
||||
typedef uint32 MultiXactOffset;
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Types from src/include/pgtime.h
|
||||
***********************************************************************************************************************************/
|
||||
/*
|
||||
* The API of this library is generally similar to the corresponding
|
||||
* C library functions, except that we use pg_time_t which (we hope) is
|
||||
* 64 bits wide, and which is most definitely signed not unsigned.
|
||||
*/
|
||||
typedef int64 pg_time_t;
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Types from src/include/postgres_ext.h
|
||||
***********************************************************************************************************************************/
|
||||
/*
|
||||
* Object ID is a fundamental type in Postgres.
|
||||
*/
|
||||
typedef unsigned int Oid;
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Types from src/include/port/pg_crc32c.h
|
||||
***********************************************************************************************************************************/
|
||||
typedef uint32 pg_crc32c;
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Types from src/include/access/xlogdefs.h
|
||||
***********************************************************************************************************************************/
|
||||
/*
|
||||
* Pointer to a location in the XLOG. These pointers are 64 bits wide,
|
||||
* because we don't want them ever to overflow.
|
||||
*/
|
||||
typedef uint64 XLogRecPtr;
|
||||
|
||||
/*
|
||||
* TimeLineID (TLI) - identifies different database histories to prevent
|
||||
* confusion after restoring a prior state of a database installation.
|
||||
* TLI does not change in a normal stop/restart of the database (including
|
||||
* crash-and-recover cases); but we must assign a new TLI after doing
|
||||
* a recovery to a prior state, a/k/a point-in-time recovery. This makes
|
||||
* the new WAL logfile sequence we generate distinguishable from the
|
||||
* sequence that was generated in the previous incarnation.
|
||||
*/
|
||||
typedef uint32 TimeLineID;
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Types from src/include/catalog/catversion.h
|
||||
***********************************************************************************************************************************/
|
||||
/*
|
||||
* We could use anything we wanted for version numbers, but I recommend
|
||||
* following the "YYYYMMDDN" style often used for DNS zone serial numbers.
|
||||
* YYYYMMDD are the date of the change, and N is the number of the change
|
||||
* on that day. (Hopefully we'll never commit ten independent sets of
|
||||
* catalog changes on the same day...)
|
||||
*/
|
||||
|
||||
/* yyyymmddN */
|
||||
#define CATALOG_VERSION_NO 201809051
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Types from src/include/catalog/pg_control.h
|
||||
***********************************************************************************************************************************/
|
||||
/* Version identifier for this pg_control format */
|
||||
#define PG_CONTROL_VERSION 1100
|
||||
|
||||
/* Nonce key length, see below */
|
||||
#define MOCK_AUTH_NONCE_LEN 32
|
||||
|
||||
/*
|
||||
* Body of CheckPoint XLOG records. This is declared here because we keep
|
||||
* a copy of the latest one in pg_control for possible disaster recovery.
|
||||
* Changing this struct requires a PG_CONTROL_VERSION bump.
|
||||
*/
|
||||
typedef struct CheckPoint
|
||||
{
|
||||
XLogRecPtr redo; /* next RecPtr available when we began to
|
||||
* create CheckPoint (i.e. REDO start point) */
|
||||
TimeLineID ThisTimeLineID; /* current TLI */
|
||||
TimeLineID PrevTimeLineID; /* previous TLI, if this record begins a new
|
||||
* timeline (equals ThisTimeLineID otherwise) */
|
||||
bool fullPageWrites; /* current full_page_writes */
|
||||
uint32 nextXidEpoch; /* higher-order bits of nextXid */
|
||||
TransactionId nextXid; /* next free XID */
|
||||
Oid nextOid; /* next free OID */
|
||||
MultiXactId nextMulti; /* next free MultiXactId */
|
||||
MultiXactOffset nextMultiOffset; /* next free MultiXact offset */
|
||||
TransactionId oldestXid; /* cluster-wide minimum datfrozenxid */
|
||||
Oid oldestXidDB; /* database with minimum datfrozenxid */
|
||||
MultiXactId oldestMulti; /* cluster-wide minimum datminmxid */
|
||||
Oid oldestMultiDB; /* database with minimum datminmxid */
|
||||
pg_time_t time; /* time stamp of checkpoint */
|
||||
TransactionId oldestCommitTsXid; /* oldest Xid with valid commit
|
||||
* timestamp */
|
||||
TransactionId newestCommitTsXid; /* newest Xid with valid commit
|
||||
* timestamp */
|
||||
|
||||
/*
|
||||
* Oldest XID still running. This is only needed to initialize hot standby
|
||||
* mode from an online checkpoint, so we only bother calculating this for
|
||||
* online checkpoints and only when wal_level is replica. Otherwise it's
|
||||
* set to InvalidTransactionId.
|
||||
*/
|
||||
TransactionId oldestActiveXid;
|
||||
} CheckPoint;
|
||||
|
||||
/*
|
||||
* System status indicator. Note this is stored in pg_control; if you change
|
||||
* it, you must bump PG_CONTROL_VERSION
|
||||
*/
|
||||
typedef enum DBState
|
||||
{
|
||||
DB_STARTUP = 0,
|
||||
DB_SHUTDOWNED,
|
||||
DB_SHUTDOWNED_IN_RECOVERY,
|
||||
DB_SHUTDOWNING,
|
||||
DB_IN_CRASH_RECOVERY,
|
||||
DB_IN_ARCHIVE_RECOVERY,
|
||||
DB_IN_PRODUCTION
|
||||
} DBState;
|
||||
|
||||
/*
|
||||
* Contents of pg_control.
|
||||
*/
|
||||
typedef struct ControlFileData
|
||||
{
|
||||
/*
|
||||
* Unique system identifier --- to ensure we match up xlog files with the
|
||||
* installation that produced them.
|
||||
*/
|
||||
uint64 system_identifier;
|
||||
|
||||
/*
|
||||
* Version identifier information. Keep these fields at the same offset,
|
||||
* especially pg_control_version; they won't be real useful if they move
|
||||
* around. (For historical reasons they must be 8 bytes into the file
|
||||
* rather than immediately at the front.)
|
||||
*
|
||||
* pg_control_version identifies the format of pg_control itself.
|
||||
* catalog_version_no identifies the format of the system catalogs.
|
||||
*
|
||||
* There are additional version identifiers in individual files; for
|
||||
* example, WAL logs contain per-page magic numbers that can serve as
|
||||
* version cues for the WAL log.
|
||||
*/
|
||||
uint32 pg_control_version; /* PG_CONTROL_VERSION */
|
||||
uint32 catalog_version_no; /* see catversion.h */
|
||||
|
||||
/*
|
||||
* System status data
|
||||
*/
|
||||
DBState state; /* see enum above */
|
||||
pg_time_t time; /* time stamp of last pg_control update */
|
||||
XLogRecPtr checkPoint; /* last check point record ptr */
|
||||
|
||||
CheckPoint checkPointCopy; /* copy of last check point record */
|
||||
|
||||
XLogRecPtr unloggedLSN; /* current fake LSN value, for unlogged rels */
|
||||
|
||||
/*
|
||||
* These two values determine the minimum point we must recover up to
|
||||
* before starting up:
|
||||
*
|
||||
* minRecoveryPoint is updated to the latest replayed LSN whenever we
|
||||
* flush a data change during archive recovery. That guards against
|
||||
* starting archive recovery, aborting it, and restarting with an earlier
|
||||
* stop location. If we've already flushed data changes from WAL record X
|
||||
* to disk, we mustn't start up until we reach X again. Zero when not
|
||||
* doing archive recovery.
|
||||
*
|
||||
* backupStartPoint is the redo pointer of the backup start checkpoint, if
|
||||
* we are recovering from an online backup and haven't reached the end of
|
||||
* backup yet. It is reset to zero when the end of backup is reached, and
|
||||
* we mustn't start up before that. A boolean would suffice otherwise, but
|
||||
* we use the redo pointer as a cross-check when we see an end-of-backup
|
||||
* record, to make sure the end-of-backup record corresponds the base
|
||||
* backup we're recovering from.
|
||||
*
|
||||
* backupEndPoint is the backup end location, if we are recovering from an
|
||||
* online backup which was taken from the standby and haven't reached the
|
||||
* end of backup yet. It is initialized to the minimum recovery point in
|
||||
* pg_control which was backed up last. It is reset to zero when the end
|
||||
* of backup is reached, and we mustn't start up before that.
|
||||
*
|
||||
* If backupEndRequired is true, we know for sure that we're restoring
|
||||
* from a backup, and must see a backup-end record before we can safely
|
||||
* start up. If it's false, but backupStartPoint is set, a backup_label
|
||||
* file was found at startup but it may have been a leftover from a stray
|
||||
* pg_start_backup() call, not accompanied by pg_stop_backup().
|
||||
*/
|
||||
XLogRecPtr minRecoveryPoint;
|
||||
TimeLineID minRecoveryPointTLI;
|
||||
XLogRecPtr backupStartPoint;
|
||||
XLogRecPtr backupEndPoint;
|
||||
bool backupEndRequired;
|
||||
|
||||
/*
|
||||
* Parameter settings that determine if the WAL can be used for archival
|
||||
* or hot standby.
|
||||
*/
|
||||
int wal_level;
|
||||
bool wal_log_hints;
|
||||
int MaxConnections;
|
||||
int max_worker_processes;
|
||||
int max_prepared_xacts;
|
||||
int max_locks_per_xact;
|
||||
bool track_commit_timestamp;
|
||||
|
||||
/*
|
||||
* This data is used to check for hardware-architecture compatibility of
|
||||
* the database and the backend executable. We need not check endianness
|
||||
* explicitly, since the pg_control version will surely look wrong to a
|
||||
* machine of different endianness, but we do need to worry about MAXALIGN
|
||||
* and floating-point format. (Note: storage layout nominally also
|
||||
* depends on SHORTALIGN and INTALIGN, but in practice these are the same
|
||||
* on all architectures of interest.)
|
||||
*
|
||||
* Testing just one double value is not a very bulletproof test for
|
||||
* floating-point compatibility, but it will catch most cases.
|
||||
*/
|
||||
uint32 maxAlign; /* alignment requirement for tuples */
|
||||
double floatFormat; /* constant 1234567.0 */
|
||||
#define FLOATFORMAT_VALUE 1234567.0
|
||||
|
||||
/*
|
||||
* This data is used to make sure that configuration of this database is
|
||||
* compatible with the backend executable.
|
||||
*/
|
||||
uint32 blcksz; /* data block size for this DB */
|
||||
uint32 relseg_size; /* blocks per segment of large relation */
|
||||
|
||||
uint32 xlog_blcksz; /* block size within WAL files */
|
||||
uint32 xlog_seg_size; /* size of each WAL segment */
|
||||
|
||||
uint32 nameDataLen; /* catalog name field width */
|
||||
uint32 indexMaxKeys; /* max number of columns in an index */
|
||||
|
||||
uint32 toast_max_chunk_size; /* chunk size in TOAST tables */
|
||||
uint32 loblksize; /* chunk size in pg_largeobject */
|
||||
|
||||
/* flags indicating pass-by-value status of various types */
|
||||
bool float4ByVal; /* float4 pass-by-value? */
|
||||
bool float8ByVal; /* float8, int8, etc pass-by-value? */
|
||||
|
||||
/* Are data pages protected by checksums? Zero if no checksum version */
|
||||
uint32 data_checksum_version;
|
||||
|
||||
/*
|
||||
* Random nonce, used in authentication requests that need to proceed
|
||||
* based on values that are cluster-unique, like a SASL exchange that
|
||||
* failed at an early stage.
|
||||
*/
|
||||
char mock_authentication_nonce[MOCK_AUTH_NONCE_LEN];
|
||||
|
||||
/* CRC of all above ... MUST BE LAST! */
|
||||
pg_crc32c crc;
|
||||
} ControlFileData;
|
||||
85
src/postgres/interface/v110.c
Normal file
85
src/postgres/interface/v110.c
Normal file
@ -0,0 +1,85 @@
|
||||
/***********************************************************************************************************************************
|
||||
PostgreSQL 11 Interface
|
||||
***********************************************************************************************************************************/
|
||||
#include "common/debug.h"
|
||||
#include "common/log.h"
|
||||
#include "postgres/interface/v110.h"
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Include PostgreSQL Types
|
||||
***********************************************************************************************************************************/
|
||||
#include "postgres/interface/v110.auto.c"
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Is the control file for this version of PostgreSQL?
|
||||
***********************************************************************************************************************************/
|
||||
bool
|
||||
pgInterfaceIs110(const Buffer *controlFile)
|
||||
{
|
||||
FUNCTION_TEST_BEGIN();
|
||||
FUNCTION_TEST_PARAM(BUFFER, controlFile);
|
||||
|
||||
FUNCTION_TEST_ASSERT(controlFile != NULL);
|
||||
FUNCTION_TEST_END();
|
||||
|
||||
ControlFileData *controlData = (ControlFileData *)bufPtr(controlFile);
|
||||
|
||||
FUNCTION_TEST_RESULT(
|
||||
BOOL, controlData->pg_control_version == PG_CONTROL_VERSION && controlData->catalog_version_no == CATALOG_VERSION_NO);
|
||||
}
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Get information from pg_control in a common format
|
||||
***********************************************************************************************************************************/
|
||||
PgControl
|
||||
pgInterfaceControl110(const Buffer *controlFile)
|
||||
{
|
||||
FUNCTION_DEBUG_BEGIN(logLevelTrace);
|
||||
FUNCTION_DEBUG_PARAM(BUFFER, controlFile);
|
||||
|
||||
FUNCTION_TEST_ASSERT(controlFile != NULL);
|
||||
FUNCTION_TEST_ASSERT(pgInterfaceIs110(controlFile));
|
||||
FUNCTION_DEBUG_END();
|
||||
|
||||
PgControl result = {0};
|
||||
ControlFileData *controlData = (ControlFileData *)bufPtr(controlFile);
|
||||
|
||||
result.systemId = controlData->system_identifier;
|
||||
result.controlVersion = controlData->pg_control_version;
|
||||
result.catalogVersion = controlData->catalog_version_no;
|
||||
|
||||
result.pageSize = controlData->blcksz;
|
||||
result.walSegmentSize = controlData->xlog_seg_size;
|
||||
|
||||
result.pageChecksum = controlData->data_checksum_version != 0;
|
||||
|
||||
FUNCTION_DEBUG_RESULT(PG_CONTROL, result);
|
||||
}
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Create pg_control for testing
|
||||
***********************************************************************************************************************************/
|
||||
#ifdef DEBUG
|
||||
|
||||
void
|
||||
pgInterfaceControlTest110(PgControl pgControl, Buffer *buffer)
|
||||
{
|
||||
FUNCTION_TEST_BEGIN();
|
||||
FUNCTION_TEST_PARAM(PG_CONTROL, pgControl);
|
||||
FUNCTION_TEST_END();
|
||||
|
||||
ControlFileData *controlData = (ControlFileData *)bufPtr(buffer);
|
||||
|
||||
controlData->system_identifier = pgControl.systemId;
|
||||
controlData->pg_control_version = pgControl.controlVersion == 0 ? PG_CONTROL_VERSION : pgControl.controlVersion;
|
||||
controlData->catalog_version_no = pgControl.catalogVersion == 0 ? CATALOG_VERSION_NO : pgControl.catalogVersion;
|
||||
|
||||
controlData->blcksz = pgControl.pageSize;
|
||||
controlData->xlog_seg_size = pgControl.walSegmentSize;
|
||||
|
||||
controlData->data_checksum_version = pgControl.pageChecksum;
|
||||
|
||||
FUNCTION_TEST_RESULT_VOID();
|
||||
}
|
||||
|
||||
#endif
|
||||
22
src/postgres/interface/v110.h
Normal file
22
src/postgres/interface/v110.h
Normal file
@ -0,0 +1,22 @@
|
||||
/***********************************************************************************************************************************
|
||||
PostgreSQL 11 Interface
|
||||
***********************************************************************************************************************************/
|
||||
#ifndef POSTGRES_INTERFACE_INTERFACE110_H
|
||||
#define POSTGRES_INTERFACE_INTERFACE110_H
|
||||
|
||||
#include "postgres/interface.h"
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Functions
|
||||
***********************************************************************************************************************************/
|
||||
bool pgInterfaceIs110(const Buffer *controlFile);
|
||||
PgControl pgInterfaceControl110(const Buffer *controlFile);
|
||||
|
||||
/***********************************************************************************************************************************
|
||||
Test Functions
|
||||
***********************************************************************************************************************************/
|
||||
#ifdef DEBUG
|
||||
void pgInterfaceControlTest110(PgControl pgControl, Buffer *buffer);
|
||||
#endif
|
||||
|
||||
#endif
|
||||
Reference in New Issue
Block a user