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/*
* 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 2014 Garrett D'Amore <garrett@damore.org>
*
* 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
#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
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 *);
#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 */
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