diff options
Diffstat (limited to 'src/include/access/xlog.h')
| -rw-r--r-- | src/include/access/xlog.h | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/src/include/access/xlog.h b/src/include/access/xlog.h index dd079496ed6..fa51d68d39e 100644 --- a/src/include/access/xlog.h +++ b/src/include/access/xlog.h @@ -6,7 +6,7 @@ * Portions Copyright (c) 1996-2001, PostgreSQL Global Development Group * Portions Copyright (c) 1994, Regents of the University of California * - * $Id: xlog.h,v 1.19 2001/03/13 01:17:06 tgl Exp $ + * $Id: xlog.h,v 1.20 2001/03/13 20:32:37 tgl Exp $ */ #ifndef XLOG_H #define XLOG_H @@ -26,6 +26,9 @@ * really: * * SizeOfXLogRecord + xl_len + n_backup_blocks * (sizeof(BkpBlock) + BLCKSZ) + * + * rounded up to a MAXALIGN boundary (so that all xlog records start on + * MAXALIGN boundaries). */ typedef struct XLogRecord { @@ -105,12 +108,13 @@ typedef struct XLogContRecord /* * Each page of XLOG file has a header like this: */ -#define XLOG_PAGE_MAGIC 0x17345169 /* can be used as WAL version indicator */ +#define XLOG_PAGE_MAGIC 0xD058 /* can be used as WAL version indicator */ typedef struct XLogPageHeaderData { - uint32 xlp_magic; /* magic value for correctness checks */ + uint16 xlp_magic; /* magic value for correctness checks */ uint16 xlp_info; /* flag bits, see below */ + StartUpID xlp_sui; /* StartUpID of first record on page */ } XLogPageHeaderData; #define SizeOfXLogPHD MAXALIGN(sizeof(XLogPageHeaderData)) @@ -119,6 +123,8 @@ 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. |