1#pragma ident	"%Z%%M%	%I%	%E% SMI"
2
3/*-
4 * Copyright (c) 1990, 1993
5 *	The Regents of the University of California.  All rights reserved.
6 *
7 * This code is derived from software contributed to Berkeley by
8 * Margo Seltzer.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 * 3. All advertising materials mentioning features or use of this software
19 *    must display the following acknowledgement:
20 *	This product includes software developed by the University of
21 *	California, Berkeley and its contributors.
22 * 4. Neither the name of the University nor the names of its contributors
23 *    may be used to endorse or promote products derived from this software
24 *    without specific prior written permission.
25 *
26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
29 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 * SUCH DAMAGE.
37 */
38
39#if defined(LIBC_SCCS) && !defined(lint)
40static char sccsid[] = "@(#)hsearch.c	8.5 (Berkeley) 9/21/94";
41#endif /* LIBC_SCCS and not lint */
42
43#include <sys/types.h>
44
45#include <fcntl.h>
46#include <string.h>
47
48#include "db-int.h"
49#include "search.h"
50
51static DB *dbp = NULL;
52static ENTRY retval;
53
54extern int
55hcreate(nel)
56	u_int nel;
57{
58	HASHINFO info;
59
60	info.nelem = nel;
61	info.bsize = 256;
62	info.ffactor = 8;
63	info.cachesize = 0;
64	info.hash = NULL;
65	info.lorder = 0;
66	dbp = (DB *)__hash_open(NULL, O_CREAT | O_RDWR | O_BINARY, 0600, &info, 0);
67	return (dbp != NULL);
68}
69
70extern ENTRY *
71hsearch(item, action)
72	ENTRY item;
73	ACTION action;
74{
75	DBT key, val;
76	int status;
77
78	if (!dbp)
79		return (NULL);
80	key.data = (u_char *)item.key;
81	key.size = strlen(item.key) + 1;
82
83	if (action == ENTER) {
84		val.data = (u_char *)item.data;
85		val.size = strlen(item.data) + 1;
86		status = (dbp->put)(dbp, &key, &val, R_NOOVERWRITE);
87		if (status)
88			return (NULL);
89	} else {
90		/* FIND */
91		status = (dbp->get)(dbp, &key, &val, 0);
92		if (status)
93			return (NULL);
94		else
95			item.data = (char *)val.data;
96	}
97	retval.key = item.key;
98	retval.data = item.data;
99	return (&retval);
100}
101
102extern void
103hdestroy()
104{
105	if (dbp) {
106		(void)(dbp->close)(dbp);
107		dbp = NULL;
108	}
109}
110