- * Header info for a backup block appended to an XLOG record.
- *
- * Note that the backup block has its own CRC, and is not covered by
- * the CRC of the XLOG record proper. Also note that we don't attempt
- * to align either the BkpBlock struct or the block's data.
- */
-typedef struct BkpBlock
-{
- crc64 crc;
- RelFileNode node;
- BlockNumber block;
-} BkpBlock;
-
-/*
- * When there is not enough space on current page for whole record, we
- * continue on the next page with continuation record. (However, the
- * XLogRecord header will never be split across pages; if there's less than
- * SizeOfXLogRecord space left at the end of a page, we just waste it.)
- *
- * Note that xl_rem_len includes backup-block data, unlike xl_len in the
- * initial header.
- */
-typedef struct XLogContRecord
-{
- uint32 xl_rem_len; /* total len of remaining data for record */
-
- /* ACTUAL LOG DATA FOLLOWS AT END OF STRUCT */
-
-} XLogContRecord;
-
-#define SizeOfXLogContRecord MAXALIGN(sizeof(XLogContRecord))
-
-/*
- * Each page of XLOG file has a header like this:
- */
-#define XLOG_PAGE_MAGIC 0xD059 /* can be used as WAL version indicator */
-
-typedef struct XLogPageHeaderData
-{
- uint16 xlp_magic; /* magic value for correctness checks */
- uint16 xlp_info; /* flag bits, see below */
- StartUpID xlp_sui; /* StartUpID of first record on page */
- XLogRecPtr xlp_pageaddr; /* XLOG address of this page */
-} XLogPageHeaderData;
-
-#define SizeOfXLogPHD MAXALIGN(sizeof(XLogPageHeaderData))
-
-typedef XLogPageHeaderData *XLogPageHeader;
-
-/* When record crosses page boundary, set this flag in new page's header */
-#define XLP_FIRST_IS_CONTRECORD 0x0001
-/* All defined flag bits in xlp_info (used for validity checking of header) */
-#define XLP_ALL_FLAGS 0x0001
-
-/*
- * We break each logical log file (xlogid value) into 16Mb segments.
- * One possible segment at the end of each log file is wasted, to ensure
- * that we don't have problems representing last-byte-position-plus-1.
- */
-#define XLogSegSize ((uint32) (16*1024*1024))
-#define XLogSegsPerFile (((uint32) 0xffffffff) / XLogSegSize)
-#define XLogFileSize (XLogSegsPerFile * XLogSegSize)
-
-/*
- * Method table for resource managers.
- *
- * RmgrTable[] is indexed by RmgrId values (see rmgr.h).
- */
-typedef struct RmgrData
-{
- char *rm_name;
- void (*rm_redo) (XLogRecPtr lsn, XLogRecord *rptr);
- void (*rm_undo) (XLogRecPtr lsn, XLogRecord *rptr);
- void (*rm_desc) (char *buf, uint8 xl_info, char *rec);
-} RmgrData;
-
-extern RmgrData RmgrTable[];
-
-/*--------------------