4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License, Version 1.0 only
6 * (the "License"). You may not use this file except in compliance
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
23 * Copyright 2014 Garrett D'Amore <garrett@damore.org>
25 * Copyright 1989 Sun Microsystems, Inc. All rights reserved.
26 * Use is subject to license terms.
29 /* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */
30 /* All Rights Reserved */
33 * Portions of this source code were derived from Berkeley 4.3 BSD
34 * under license from the Regents of the University of California.
38 * Hashed key data base library.
44 #include <sys/feature_tests.h>
45 #include <sys/types.h>
52 * flags to dbm_store()
60 #if !defined(_XPG4_2) || defined(__EXTENSIONS__)
61 #define PBLKSIZ _PBLKSIZ
62 #define DBLKSIZ _DBLKSIZ
63 #endif /* !defined(_XPG4_2) || defined(__EXTENSIONS__) */
66 int dbm_dirf
; /* open directory file */
67 int dbm_pagf
; /* open page file */
68 int dbm_flags
; /* flags, see below */
69 long dbm_maxbno
; /* last ``bit'' in dir file */
70 long dbm_bitno
; /* current bit number */
71 long dbm_hmask
; /* hash mask */
72 long dbm_blkptr
; /* current block for dbm_nextkey */
73 int dbm_keyptr
; /* current key for dbm_nextkey */
74 long dbm_blkno
; /* current page to read/write */
75 long dbm_pagbno
; /* current page in pagbuf */
76 char dbm_pagbuf
[_PBLKSIZ
]; /* page file block buffer */
77 long dbm_dirbno
; /* current block in dirbuf */
78 char dbm_dirbuf
[_DBLKSIZ
]; /* directory file block buffer */
93 DBM
*dbm_open(const char *, int, mode_t
);
94 void dbm_close(DBM
*);
95 datum
dbm_fetch(DBM
*, datum
);
96 datum
dbm_firstkey(DBM
*);
97 datum
dbm_nextkey(DBM
*);
98 int dbm_delete(DBM
*, datum
);
99 int dbm_store(DBM
*, datum
, datum
, int);
100 int dbm_clearerr(DBM
*);
101 int dbm_error(DBM
*);
103 #define _DBM_RDONLY 0x1 /* data base open read-only */
104 #define _DBM_IOERR 0x2 /* data base I/O error */
106 #define dbm_rdonly(__db) ((__db)->dbm_flags & _DBM_RDONLY)
107 #define dbm_error(__db) ((__db)->dbm_flags & _DBM_IOERR)
108 /* use this one at your own risk! */
109 #define dbm_clearerr(__db) ((__db)->dbm_flags &= ~_DBM_IOERR)
111 #define dbm_dirfno(__db) ((__db)->dbm_dirf)
112 #define dbm_pagfno(__db) ((__db)->dbm_pagf)