1/*	$NetBSD: ndbm.c,v 1.22 2008/09/10 17:52:35 joerg Exp $	*/
2/*	from: NetBSD: ndbm.c,v 1.18 2004/04/27 20:03:45 kleink Exp 	*/
3
4/*-
5 * Copyright (c) 1990, 1993
6 *	The Regents of the University of California.  All rights reserved.
7 *
8 * This code is derived from software contributed to Berkeley by
9 * Margo Seltzer.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 *    notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 *    notice, this list of conditions and the following disclaimer in the
18 *    documentation and/or other materials provided with the distribution.
19 * 3. Neither the name of the University nor the names of its contributors
20 *    may be used to endorse or promote products derived from this software
21 *    without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * SUCH DAMAGE.
34 */
35
36#if HAVE_NBTOOL_CONFIG_H
37#include "nbtool_config.h"
38#endif
39
40#include <sys/cdefs.h>
41__RCSID("$NetBSD: ndbm.c,v 1.22 2008/09/10 17:52:35 joerg Exp $");
42
43/*
44 * This package provides a dbm compatible interface to the new hashing
45 * package described in db(3).
46 */
47#include "namespace.h"
48#include <sys/param.h>
49
50#include <fcntl.h>
51#include <stdio.h>
52#include <string.h>
53
54#include <ndbm.h>
55#include "hash.h"
56
57/*
58 * Returns:
59 * 	*DBM on success
60 *	 NULL on failure
61 */
62DBM *
63dbm_open(const char *file, int flags, mode_t mode)
64{
65	HASHINFO info;
66	char path[MAXPATHLEN];
67
68	info.bsize = 4096;
69	info.ffactor = 40;
70	info.nelem = 1;
71	info.cachesize = 0;
72	info.hash = NULL;
73	info.lorder = 0;
74	(void)strncpy(path, file, sizeof(path) - 1);
75	(void)strncat(path, DBM_SUFFIX, sizeof(path) - strlen(path) - 1);
76	if ((flags & O_ACCMODE) == O_WRONLY) {
77		flags &= ~O_WRONLY;
78		flags |= O_RDWR;
79	}
80	return ((DBM *)__hash_open(path, flags, mode, &info, 0));
81}
82
83void
84dbm_close(DBM *db)
85{
86	(void)(db->close)(db);
87}
88
89int
90dbm_error(DBM *db)
91{
92	HTAB *hp;
93
94	hp = db->internal;
95	return (hp->err);
96}
97
98int
99dbm_clearerr(DBM *db)
100{
101	HTAB *hp;
102
103	hp = db->internal;
104	hp->err = 0;
105	return (0);
106}
107
108int
109dbm_dirfno(DBM *db)
110{
111	HTAB *hp;
112
113	hp = db->internal;
114	return hp->fp;
115}
116