Initial revision

CVS patchset: 4644
CVS date: 2001/03/21 18:33:35

1 files changed, 174 insertions, 0 deletions

diff --git a/db/include/db_upgrade.h b/db/include/db_upgrade.h
new file mode 100644
index 000000000..d8d996452
--- /dev/null
+++ b/db/include/db_upgrade.h
@@ -0,0 +1,174 @@
+/*-
+ * See the file LICENSE for redistribution information.
+ *
+ * Copyright (c) 1996, 1997, 1998, 1999, 2000
+ *	Sleepycat Software.  All rights reserved.
+ *
+ * $Id: db_upgrade.h,v 1.5 2000/11/16 23:40:56 ubell Exp $
+ */
+
+#ifndef _DB_UPGRADE_H_
+#define	_DB_UPGRADE_H_
+
+/*
+ * This file defines the metadata pages from the previous release.
+ * These structures are only used to upgrade old versions of databases.
+ */
+
+/* Structures from the 3.1 release */
+/*
+ * QAM Meta data page structure
+ *
+ */
+typedef struct _qmeta31 {
+	DBMETA    dbmeta;	/* 00-71: Generic meta-data header. */
+
+	u_int32_t start;	/* 72-75: Start offset. */
+	u_int32_t first_recno;	/* 76-79: First not deleted record. */
+	u_int32_t cur_recno;	/* 80-83: Last recno allocated. */
+	u_int32_t re_len;	/* 84-87: Fixed-length record length. */
+	u_int32_t re_pad;	/* 88-91: Fixed-length record pad. */
+	u_int32_t rec_page;	/* 92-95: Records Per Page. */
+
+	/*
+	 * Minimum page size is 128.
+	 */
+} QMETA31;
+
+/* Structures from the 3.0 release */
+
+typedef struct _dbmeta30 {
+	DB_LSN	  lsn;		/* 00-07: LSN. */
+	db_pgno_t pgno;		/* 08-11: Current page number. */
+	u_int32_t magic;	/* 12-15: Magic number. */
+	u_int32_t version;	/* 16-19: Version. */
+	u_int32_t pagesize;	/* 20-23: Pagesize. */
+	u_int8_t  unused1[1];	/*    24: Unused. */
+	u_int8_t  type;		/*    25: Page type. */
+	u_int8_t  unused2[2];	/* 26-27: Unused. */
+	u_int32_t free;		/* 28-31: Free list page number. */
+	u_int32_t flags;	/* 32-35: Flags: unique to each AM. */
+				/* 36-55: Unique file ID. */
+	u_int8_t  uid[DB_FILE_ID_LEN];
+} DBMETA30;
+
+/************************************************************************
+ BTREE METADATA PAGE LAYOUT
+ ************************************************************************/
+typedef struct _btmeta30 {
+	DBMETA30	dbmeta;	/* 00-55: Generic meta-data header. */
+
+	u_int32_t maxkey;	/* 56-59: Btree: Maxkey. */
+	u_int32_t minkey;	/* 60-63: Btree: Minkey. */
+	u_int32_t re_len;	/* 64-67: Recno: fixed-length record length. */
+	u_int32_t re_pad;	/* 68-71: Recno: fixed-length record pad. */
+	u_int32_t root;		/* 72-75: Root page. */
+
+	/*
+	 * Minimum page size is 128.
+	 */
+} BTMETA30;
+
+/************************************************************************
+ HASH METADATA PAGE LAYOUT
+ ************************************************************************/
+typedef struct _hashmeta30 {
+	DBMETA30 dbmeta;	/* 00-55: Generic meta-data page header. */
+
+	u_int32_t max_bucket;	/* 56-59: ID of Maximum bucket in use */
+	u_int32_t high_mask;	/* 60-63: Modulo mask into table */
+	u_int32_t low_mask;	/* 64-67: Modulo mask into table lower half */
+	u_int32_t ffactor;	/* 68-71: Fill factor */
+	u_int32_t nelem;	/* 72-75: Number of keys in hash table */
+	u_int32_t h_charkey;	/* 76-79: Value of hash(CHARKEY) */
+#define	NCACHED30	32		/* number of spare points */
+				/* 80-207: Spare pages for overflow */
+	u_int32_t spares[NCACHED30];
+
+	/*
+	 * Minimum page size is 256.
+	 */
+} HMETA30;
+
+/************************************************************************
+ QUEUE METADATA PAGE LAYOUT
+ ************************************************************************/
+/*
+ * QAM Meta data page structure
+ *
+ */
+typedef struct _qmeta30 {
+	DBMETA30    dbmeta;	/* 00-55: Generic meta-data header. */
+
+	u_int32_t start;	/* 56-59: Start offset. */
+	u_int32_t first_recno;	/* 60-63: First not deleted record. */
+	u_int32_t cur_recno;	/* 64-67: Last recno allocated. */
+	u_int32_t re_len;	/* 68-71: Fixed-length record length. */
+	u_int32_t re_pad;	/* 72-75: Fixed-length record pad. */
+	u_int32_t rec_page;	/* 76-79: Records Per Page. */
+
+	/*
+	 * Minimum page size is 128.
+	 */
+} QMETA30;
+
+/* Structures from Release 2.x */
+
+/************************************************************************
+ BTREE METADATA PAGE LAYOUT
+ ************************************************************************/
+
+/*
+ * Btree metadata page layout:
+ */
+typedef struct _btmeta2X {
+	DB_LSN	  lsn;		/* 00-07: LSN. */
+	db_pgno_t pgno;		/* 08-11: Current page number. */
+	u_int32_t magic;	/* 12-15: Magic number. */
+	u_int32_t version;	/* 16-19: Version. */
+	u_int32_t pagesize;	/* 20-23: Pagesize. */
+	u_int32_t maxkey;	/* 24-27: Btree: Maxkey. */
+	u_int32_t minkey;	/* 28-31: Btree: Minkey. */
+	u_int32_t free;		/* 32-35: Free list page number. */
+	u_int32_t flags;	/* 36-39: Flags. */
+	u_int32_t re_len;	/* 40-43: Recno: fixed-length record length. */
+	u_int32_t re_pad;	/* 44-47: Recno: fixed-length record pad. */
+				/* 48-67: Unique file ID. */
+	u_int8_t  uid[DB_FILE_ID_LEN];
+} BTMETA2X;
+
+/************************************************************************
+ HASH METADATA PAGE LAYOUT
+ ************************************************************************/
+
+/*
+ * Hash metadata page layout:
+ */
+/* Hash Table Information */
+typedef struct hashhdr {	/* Disk resident portion */
+	DB_LSN	lsn;		/* 00-07: LSN of the header page */
+	db_pgno_t pgno;		/* 08-11: Page number (btree compatibility). */
+	u_int32_t magic;	/* 12-15: Magic NO for hash tables */
+	u_int32_t version;	/* 16-19: Version ID */
+	u_int32_t pagesize;	/* 20-23: Bucket/Page Size */
+	u_int32_t ovfl_point;	/* 24-27: Overflow page allocation location */
+	u_int32_t last_freed;	/* 28-31: Last freed overflow page pgno */
+	u_int32_t max_bucket;	/* 32-35: ID of Maximum bucket in use */
+	u_int32_t high_mask;	/* 36-39: Modulo mask into table */
+	u_int32_t low_mask;	/* 40-43: Modulo mask into table lower half */
+	u_int32_t ffactor;	/* 44-47: Fill factor */
+	u_int32_t nelem;	/* 48-51: Number of keys in hash table */
+	u_int32_t h_charkey;	/* 52-55: Value of hash(CHARKEY) */
+	u_int32_t flags;	/* 56-59: Allow duplicates. */
+#define	NCACHED2X	32		/* number of spare points */
+				/* 60-187: Spare pages for overflow */
+	u_int32_t spares[NCACHED2X];
+				/* 188-207: Unique file ID. */
+	u_int8_t  uid[DB_FILE_ID_LEN];
+
+	/*
+	 * Minimum page size is 256.
+	 */
+} HASHHDR;
+
+#endif