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
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
|
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 1989 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */
/* All Rights Reserved */
/*
* Portions of this source code were derived from Berkeley 4.3 BSD
* under license from the Regents of the University of California.
*/
/*
* Hashed key data base library.
*/
#ifndef _NDBM_H
#define _NDBM_H
#pragma ident "%Z%%M% %I% %E% SMI"
#include <sys/feature_tests.h>
#include <sys/types.h>
#ifdef __cplusplus
extern "C" {
#endif
/*
* flags to dbm_store()
*/
#define DBM_INSERT 0
#define DBM_REPLACE 1
#define _PBLKSIZ 1024
#define _DBLKSIZ 4096
#if !defined(_XPG4_2) || defined(__EXTENSIONS__)
#define PBLKSIZ _PBLKSIZ
#define DBLKSIZ _DBLKSIZ
#endif /* !defined(_XPG4_2) || defined(__EXTENSIONS__) */
typedef struct {
int dbm_dirf; /* open directory file */
int dbm_pagf; /* open page file */
int dbm_flags; /* flags, see below */
long dbm_maxbno; /* last ``bit'' in dir file */
long dbm_bitno; /* current bit number */
long dbm_hmask; /* hash mask */
long dbm_blkptr; /* current block for dbm_nextkey */
int dbm_keyptr; /* current key for dbm_nextkey */
long dbm_blkno; /* current page to read/write */
long dbm_pagbno; /* current page in pagbuf */
char dbm_pagbuf[_PBLKSIZ]; /* page file block buffer */
long dbm_dirbno; /* current block in dirbuf */
char dbm_dirbuf[_DBLKSIZ]; /* directory file block buffer */
} DBM;
#if defined(_XPG4_2)
typedef struct {
void *dptr;
size_t dsize;
} datum;
#else
typedef struct {
char *dptr;
long dsize;
} datum;
#endif
#ifdef __STDC__
DBM *dbm_open(const char *, int, mode_t);
void dbm_close(DBM *);
datum dbm_fetch(DBM *, datum);
datum dbm_firstkey(DBM *);
datum dbm_nextkey(DBM *);
int dbm_delete(DBM *, datum);
int dbm_store(DBM *, datum, datum, int);
int dbm_clearerr(DBM *);
int dbm_error(DBM *);
#else
DBM *dbm_open();
void dbm_close();
datum dbm_fetch();
datum dbm_firstkey();
datum dbm_nextkey();
int dbm_delete();
int dbm_store();
int dbm_clearerr();
int dbm_error();
#endif
#define _DBM_RDONLY 0x1 /* data base open read-only */
#define _DBM_IOERR 0x2 /* data base I/O error */
#define dbm_rdonly(__db) ((__db)->dbm_flags & _DBM_RDONLY)
#define dbm_error(__db) ((__db)->dbm_flags & _DBM_IOERR)
/* use this one at your own risk! */
#define dbm_clearerr(__db) ((__db)->dbm_flags &= ~_DBM_IOERR)
/* for fstat(2) */
#define dbm_dirfno(__db) ((__db)->dbm_dirf)
#define dbm_pagfno(__db) ((__db)->dbm_pagf)
#ifdef __cplusplus
}
#endif
#endif /* _NDBM_H */
|
