1/*
2 * CDDL HEADER START
3 *
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
7 * with the License.
8 *
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.
13 *
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]
19 *
20 * CDDL HEADER END
21 */
22/*
23 * Copyright 2015 Gary Mills
24 * Copyright 2003 Sun Microsystems, Inc.  All rights reserved.
25 * Use is subject to license terms.
26 */
27
28/*
29 * DESCRIPTION: Contains a front end to the map locking code. These are called
30 *		when a map, or its map_ctrl structure, needs to be locked
31 *		for a short time for internal modification. This lock should
32 *		not be held between DBM operations.
33 *
34 * NOTE :	This is not the same mechanism as the `update lock` which is
35 *		held for a relatively long period when a map is being update
36 *		from the DIT.
37 */
38
39#include <unistd.h>
40#include <syslog.h>
41#include <sys/mman.h>
42#include <thread.h>
43#include <synch.h>
44#include <ndbm.h>
45#include "ypsym.h"
46#include "shim.h"
47#include "stubs.h"
48
49/*
50 * FUNCTION : 	lock_map_ctrl()
51 *
52 * DESCRIPTION: Front end to the lock routine taking map_ctrl structure as
53 *		argument. Saves cost of a hash operation.
54 *
55 * GIVEN :	Map_ctrl structure .
56 *
57 * RETURNS :	Same as lock core
58 */
59int
60lock_map_ctrl(map_ctrl *map)
61{
62	int ret;
63
64	ret = lock_core(map->hash_val);
65
66	return (ret);
67}
68
69/*
70 * FUNCTION : 	unlock_map_ctrl()
71 *
72 * DESCRIPTION: Front end to the unlock routine taking map_ctrl structure as
73 *		argument. Saves cost of a hash operation.
74 *
75 * GIVEN :	Map_ctrl structure .
76 *
77 * RETURNS :	Same as lock core
78 */
79int
80unlock_map_ctrl(map_ctrl *map)
81{
82	int ret;
83
84	ret = unlock_core(map->hash_val);
85	return (ret);
86}
87