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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 2015 Gary Mills
* Copyright 2003 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/*
* DESCRIPTION: Contains a front end to the map locking code. These are called
* when a map, or its map_ctrl structure, needs to be locked
* for a short time for internal modification. This lock should
* not be held between DBM operations.
*
* NOTE : This is not the same mechanism as the `update lock` which is
* held for a relatively long period when a map is being update
* from the DIT.
*/
#include <unistd.h>
#include <syslog.h>
#include <sys/mman.h>
#include <thread.h>
#include <synch.h>
#include <ndbm.h>
#include "ypsym.h"
#include "shim.h"
#include "stubs.h"
/*
* FUNCTION : lock_map_ctrl()
*
* DESCRIPTION: Front end to the lock routine taking map_ctrl structure as
* argument. Saves cost of a hash operation.
*
* GIVEN : Map_ctrl structure .
*
* RETURNS : Same as lock core
*/
int
lock_map_ctrl(map_ctrl *map)
{
int ret;
ret = lock_core(map->hash_val);
return (ret);
}
/*
* FUNCTION : unlock_map_ctrl()
*
* DESCRIPTION: Front end to the unlock routine taking map_ctrl structure as
* argument. Saves cost of a hash operation.
*
* GIVEN : Map_ctrl structure .
*
* RETURNS : Same as lock core
*/
int
unlock_map_ctrl(map_ctrl *map)
{
int ret;
ret = unlock_core(map->hash_val);
return (ret);
}
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