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
|
/*-
* See the file LICENSE for redistribution information.
*
* Copyright (c) 2010, 2012 Oracle and/or its affiliates. All rights reserved.
*/
#include "db_config.h"
#include "db_int.h"
#include "dbinc/db_page.h"
#include "dbinc/db_swap.h"
#include "dbinc/heap.h"
/*
* __heap_pgin --
* Convert host-specific page layout from the host-independent format
* stored on disk.
*
* PUBLIC: int __heap_pgin __P((DB *, db_pgno_t, void *, DBT *));
*/
int
__heap_pgin(dbp, pg, pp, cookie)
DB *dbp;
db_pgno_t pg;
void *pp;
DBT *cookie;
{
DB_PGINFO *pginfo;
PAGE *h;
pginfo = (DB_PGINFO *)cookie->data;
if (!F_ISSET(pginfo, DB_AM_SWAP))
return (0);
h = pp;
return (TYPE(h) == P_HEAPMETA ? __heap_mswap(dbp->env, pp) :
__db_byteswap(dbp, pg, pp, pginfo->db_pagesize, 1));
}
/*
* __heap_pgout --
* Convert host-specific page layout from the host-independent format
* stored on disk.
*
* PUBLIC: int __heap_pgout __P((DB *, db_pgno_t, void *, DBT *));
*/
int
__heap_pgout(dbp, pg, pp, cookie)
DB *dbp;
db_pgno_t pg;
void *pp;
DBT *cookie;
{
DB_PGINFO *pginfo;
PAGE *h;
pginfo = (DB_PGINFO *)cookie->data;
if (!F_ISSET(pginfo, DB_AM_SWAP))
return (0);
h = pp;
return (TYPE(h) == P_HEAPMETA ? __heap_mswap(dbp->env, pp) :
__db_byteswap(dbp, pg, pp, pginfo->db_pagesize, 0));
}
/*
* __heap_mswap --
* Swap the bytes on the heap metadata page.
*
* PUBLIC: int __heap_mswap __P((ENV *, PAGE *));
*/
int
__heap_mswap(env, pg)
ENV *env;
PAGE *pg;
{
u_int8_t *p;
COMPQUIET(env, NULL);
__db_metaswap(pg);
p = (u_int8_t *)pg + sizeof(DBMETA);
SWAP32(p); /* curregion */
SWAP32(p); /* nregions */
SWAP32(p); /* gbytes */
SWAP32(p); /* bytes */
SWAP32(p); /* region_size */
p += 92 * sizeof(u_int32_t); /* unused */
SWAP32(p); /* crypto_magic */
return (0);
}
|