/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (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 (c) 2002-2003, Network Appliance, Inc. All rights reserved.
*/
/*
* Copyright 2004 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/*
*
* MODULE: dapl_pz_util.c
*
* PURPOSE: Manage PZ structure
*
* $Id: dapl_pz_util.c,v 1.7 2003/06/13 12:21:11 sjs2 Exp $
*/
#include "dapl_pz_util.h"
#include "dapl_ia_util.h"
/*
* dapl_pz_alloc
*
* alloc and initialize an PZ struct
*
* Input:
* none
*
* Output:
* pz_ptr
*
* Returns:
* none
*
*/
DAPL_PZ *
dapl_pz_alloc(
IN DAPL_IA *ia)
{
DAPL_PZ *pz;
/* Allocate PZ */
pz = (DAPL_PZ *) dapl_os_alloc(sizeof (DAPL_PZ));
if (NULL == pz) {
return (NULL);
}
/* zero the structure */
(void) dapl_os_memzero(pz, sizeof (DAPL_PZ));
/*
* initialize the header
*/
pz->header.provider = ia->header.provider;
pz->header.magic = DAPL_MAGIC_PZ;
pz->header.handle_type = DAT_HANDLE_TYPE_PZ;
pz->header.owner_ia = ia;
pz->header.user_context.as_64 = 0;
pz->header.user_context.as_ptr = NULL;
dapl_llist_init_entry(&pz->header.ia_list_entry);
dapl_ia_link_pz(ia, pz);
dapl_os_lock_init(&pz->header.lock);
/*
* initialize the body
*/
pz->pz_ref_count = 0;
return (pz);
}
/*
* dapl_pz_dealloc
*
* free an PZ struct
*
* Input:
* pz_ptr
*
* Output:
* none
*
* Returns:
* none
*
*/
void
dapl_pz_dealloc(
IN DAPL_PZ *pz)
{
/* reset magic to prevent reuse */
pz->header.magic = DAPL_MAGIC_INVALID;
dapl_ia_unlink_pz(pz->header.owner_ia, pz);
dapl_os_lock_destroy(&pz->header.lock);
dapl_os_free(pz, sizeof (DAPL_PZ));
}