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111 lines
2.4 KiB
C
111 lines
2.4 KiB
C
/*-
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* See the file LICENSE for redistribution information.
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*
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* Copyright (c) 1996, 1997, 1998, 1999, 2000
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* Sleepycat Software. All rights reserved.
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*/
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#include "db_config.h"
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#ifndef lint
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static const char revid[] = "$Id: qam_upgrade.c,v 11.7 2000/11/30 00:58:44 ubell Exp $";
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#endif /* not lint */
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#ifndef NO_SYSTEM_INCLUDES
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#include <sys/types.h>
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#include <limits.h>
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#include <string.h>
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#endif
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#include "db_int.h"
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#include "db_page.h"
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#include "db_swap.h"
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#include "db_am.h"
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#include "db_upgrade.h"
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/*
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* __qam_31_qammeta --
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* Upgrade the database from version 1 to version 2.
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*
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* PUBLIC: int __qam_31_qammeta __P((DB *, char *, u_int8_t *));
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*/
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int
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__qam_31_qammeta(dbp, real_name, buf)
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DB *dbp;
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char *real_name;
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u_int8_t *buf;
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{
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QMETA31 *newmeta;
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QMETA30 *oldmeta;
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COMPQUIET(dbp, NULL);
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COMPQUIET(real_name, NULL);
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newmeta = (QMETA31 *)buf;
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oldmeta = (QMETA30 *)buf;
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/*
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* Copy the fields to their new locations.
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* They may overlap so start at the bottom and use memmove().
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*/
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newmeta->rec_page = oldmeta->rec_page;
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newmeta->re_pad = oldmeta->re_pad;
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newmeta->re_len = oldmeta->re_len;
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newmeta->cur_recno = oldmeta->cur_recno;
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newmeta->first_recno = oldmeta->first_recno;
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newmeta->start = oldmeta->start;
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memmove(newmeta->dbmeta.uid,
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oldmeta->dbmeta.uid, sizeof(oldmeta->dbmeta.uid));
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newmeta->dbmeta.flags = oldmeta->dbmeta.flags;
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newmeta->dbmeta.record_count = 0;
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newmeta->dbmeta.key_count = 0;
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ZERO_LSN(newmeta->dbmeta.unused3);
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/* Update the version. */
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newmeta->dbmeta.version = 2;
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return (0);
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}
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/*
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* __qam_32_qammeta --
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* Upgrade the database from version 2 to version 3.
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*
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* PUBLIC: int __qam_32_qammeta __P((DB *, char *, u_int8_t *));
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*/
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int
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__qam_32_qammeta(dbp, real_name, buf)
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DB *dbp;
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char *real_name;
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u_int8_t *buf;
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{
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QMETA32 *newmeta;
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QMETA31 *oldmeta;
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COMPQUIET(dbp, NULL);
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COMPQUIET(real_name, NULL);
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newmeta = (QMETA32 *)buf;
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oldmeta = (QMETA31 *)buf;
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/*
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* Copy the fields to their new locations.
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* We are dropping the first field so move
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* from the top.
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*/
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newmeta->first_recno = oldmeta->first_recno;
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newmeta->cur_recno = oldmeta->cur_recno;
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newmeta->re_len = oldmeta->re_len;
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newmeta->re_pad = oldmeta->re_pad;
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newmeta->rec_page = oldmeta->rec_page;
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newmeta->page_ext = 0;
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/* cur_recno now points to the first free slot. */
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newmeta->cur_recno++;
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if (newmeta->first_recno == 0)
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newmeta->first_recno = 1;
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/* Update the version. */
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newmeta->dbmeta.version = 3;
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return (0);
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}
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