1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
|
/*-
* See the file LICENSE for redistribution information.
*
* Copyright (c) 1996-2002
* Sleepycat Software. All rights reserved.
*/
#include "db_config.h"
#ifndef lint
static const char revid[] = "$Id: qam_upgrade.c,v 11.12 2002/03/29 20:46:48 bostic Exp $";
#endif /* not lint */
#ifndef NO_SYSTEM_INCLUDES
#include <sys/types.h>
#include <limits.h>
#include <string.h>
#endif
#include "db_int.h"
#include "dbinc/db_upgrade.h"
/*
* __qam_31_qammeta --
* Upgrade the database from version 1 to version 2.
*
* PUBLIC: int __qam_31_qammeta __P((DB *, char *, u_int8_t *));
*/
int
__qam_31_qammeta(dbp, real_name, buf)
DB *dbp;
char *real_name;
u_int8_t *buf;
{
QMETA31 *newmeta;
QMETA30 *oldmeta;
COMPQUIET(dbp, NULL);
COMPQUIET(real_name, NULL);
newmeta = (QMETA31 *)buf;
oldmeta = (QMETA30 *)buf;
/*
* Copy the fields to their new locations.
* They may overlap so start at the bottom and use memmove().
*/
newmeta->rec_page = oldmeta->rec_page;
newmeta->re_pad = oldmeta->re_pad;
newmeta->re_len = oldmeta->re_len;
newmeta->cur_recno = oldmeta->cur_recno;
newmeta->first_recno = oldmeta->first_recno;
newmeta->start = oldmeta->start;
memmove(newmeta->dbmeta.uid,
oldmeta->dbmeta.uid, sizeof(oldmeta->dbmeta.uid));
newmeta->dbmeta.flags = oldmeta->dbmeta.flags;
newmeta->dbmeta.record_count = 0;
newmeta->dbmeta.key_count = 0;
ZERO_LSN(newmeta->dbmeta.unused3);
/* Update the version. */
newmeta->dbmeta.version = 2;
return (0);
}
/*
* __qam_32_qammeta --
* Upgrade the database from version 2 to version 3.
*
* PUBLIC: int __qam_32_qammeta __P((DB *, char *, u_int8_t *));
*/
int
__qam_32_qammeta(dbp, real_name, buf)
DB *dbp;
char *real_name;
u_int8_t *buf;
{
QMETA32 *newmeta;
QMETA31 *oldmeta;
COMPQUIET(dbp, NULL);
COMPQUIET(real_name, NULL);
newmeta = (QMETA32 *)buf;
oldmeta = (QMETA31 *)buf;
/*
* Copy the fields to their new locations.
* We are dropping the first field so move
* from the top.
*/
newmeta->first_recno = oldmeta->first_recno;
newmeta->cur_recno = oldmeta->cur_recno;
newmeta->re_len = oldmeta->re_len;
newmeta->re_pad = oldmeta->re_pad;
newmeta->rec_page = oldmeta->rec_page;
newmeta->page_ext = 0;
/* cur_recno now points to the first free slot. */
newmeta->cur_recno++;
if (newmeta->first_recno == 0)
newmeta->first_recno = 1;
/* Update the version. */
newmeta->dbmeta.version = 3;
return (0);
}
|
