1*9e39c5baSBill Taylor /*
2*9e39c5baSBill Taylor * CDDL HEADER START
3*9e39c5baSBill Taylor *
4*9e39c5baSBill Taylor * The contents of this file are subject to the terms of the
5*9e39c5baSBill Taylor * Common Development and Distribution License (the "License").
6*9e39c5baSBill Taylor * You may not use this file except in compliance with the License.
7*9e39c5baSBill Taylor *
8*9e39c5baSBill Taylor * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9*9e39c5baSBill Taylor * or http://www.opensolaris.org/os/licensing.
10*9e39c5baSBill Taylor * See the License for the specific language governing permissions
11*9e39c5baSBill Taylor * and limitations under the License.
12*9e39c5baSBill Taylor *
13*9e39c5baSBill Taylor * When distributing Covered Code, include this CDDL HEADER in each
14*9e39c5baSBill Taylor * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15*9e39c5baSBill Taylor * If applicable, add the following below this CDDL HEADER, with the
16*9e39c5baSBill Taylor * fields enclosed by brackets "[]" replaced with your own identifying
17*9e39c5baSBill Taylor * information: Portions Copyright [yyyy] [name of copyright owner]
18*9e39c5baSBill Taylor *
19*9e39c5baSBill Taylor * CDDL HEADER END
20*9e39c5baSBill Taylor */
21*9e39c5baSBill Taylor
22*9e39c5baSBill Taylor /*
23*9e39c5baSBill Taylor * Copyright (c) 2002-2003, Network Appliance, Inc. All rights reserved.
24*9e39c5baSBill Taylor */
25*9e39c5baSBill Taylor
26*9e39c5baSBill Taylor /*
27*9e39c5baSBill Taylor * Copyright 2004 Sun Microsystems, Inc. All rights reserved.
28*9e39c5baSBill Taylor * Use is subject to license terms.
29*9e39c5baSBill Taylor */
30*9e39c5baSBill Taylor
31*9e39c5baSBill Taylor /*
32*9e39c5baSBill Taylor *
33*9e39c5baSBill Taylor * MODULE: dapl_pz_util.c
34*9e39c5baSBill Taylor *
35*9e39c5baSBill Taylor * PURPOSE: Manage PZ structure
36*9e39c5baSBill Taylor *
37*9e39c5baSBill Taylor * $Id: dapl_pz_util.c,v 1.7 2003/06/13 12:21:11 sjs2 Exp $
38*9e39c5baSBill Taylor */
39*9e39c5baSBill Taylor
40*9e39c5baSBill Taylor #include "dapl_pz_util.h"
41*9e39c5baSBill Taylor #include "dapl_ia_util.h"
42*9e39c5baSBill Taylor
43*9e39c5baSBill Taylor /*
44*9e39c5baSBill Taylor * dapl_pz_alloc
45*9e39c5baSBill Taylor *
46*9e39c5baSBill Taylor * alloc and initialize an PZ struct
47*9e39c5baSBill Taylor *
48*9e39c5baSBill Taylor * Input:
49*9e39c5baSBill Taylor * none
50*9e39c5baSBill Taylor *
51*9e39c5baSBill Taylor * Output:
52*9e39c5baSBill Taylor * pz_ptr
53*9e39c5baSBill Taylor *
54*9e39c5baSBill Taylor * Returns:
55*9e39c5baSBill Taylor * none
56*9e39c5baSBill Taylor *
57*9e39c5baSBill Taylor */
58*9e39c5baSBill Taylor DAPL_PZ *
dapl_pz_alloc(IN DAPL_IA * ia)59*9e39c5baSBill Taylor dapl_pz_alloc(
60*9e39c5baSBill Taylor IN DAPL_IA *ia)
61*9e39c5baSBill Taylor {
62*9e39c5baSBill Taylor DAPL_PZ *pz;
63*9e39c5baSBill Taylor
64*9e39c5baSBill Taylor /* Allocate PZ */
65*9e39c5baSBill Taylor pz = (DAPL_PZ *) dapl_os_alloc(sizeof (DAPL_PZ));
66*9e39c5baSBill Taylor if (NULL == pz) {
67*9e39c5baSBill Taylor return (NULL);
68*9e39c5baSBill Taylor }
69*9e39c5baSBill Taylor
70*9e39c5baSBill Taylor /* zero the structure */
71*9e39c5baSBill Taylor (void) dapl_os_memzero(pz, sizeof (DAPL_PZ));
72*9e39c5baSBill Taylor
73*9e39c5baSBill Taylor /*
74*9e39c5baSBill Taylor * initialize the header
75*9e39c5baSBill Taylor */
76*9e39c5baSBill Taylor pz->header.provider = ia->header.provider;
77*9e39c5baSBill Taylor pz->header.magic = DAPL_MAGIC_PZ;
78*9e39c5baSBill Taylor pz->header.handle_type = DAT_HANDLE_TYPE_PZ;
79*9e39c5baSBill Taylor pz->header.owner_ia = ia;
80*9e39c5baSBill Taylor pz->header.user_context.as_64 = 0;
81*9e39c5baSBill Taylor pz->header.user_context.as_ptr = NULL;
82*9e39c5baSBill Taylor dapl_llist_init_entry(&pz->header.ia_list_entry);
83*9e39c5baSBill Taylor dapl_ia_link_pz(ia, pz);
84*9e39c5baSBill Taylor dapl_os_lock_init(&pz->header.lock);
85*9e39c5baSBill Taylor
86*9e39c5baSBill Taylor /*
87*9e39c5baSBill Taylor * initialize the body
88*9e39c5baSBill Taylor */
89*9e39c5baSBill Taylor pz->pz_ref_count = 0;
90*9e39c5baSBill Taylor
91*9e39c5baSBill Taylor return (pz);
92*9e39c5baSBill Taylor }
93*9e39c5baSBill Taylor
94*9e39c5baSBill Taylor /*
95*9e39c5baSBill Taylor * dapl_pz_dealloc
96*9e39c5baSBill Taylor *
97*9e39c5baSBill Taylor * free an PZ struct
98*9e39c5baSBill Taylor *
99*9e39c5baSBill Taylor * Input:
100*9e39c5baSBill Taylor * pz_ptr
101*9e39c5baSBill Taylor *
102*9e39c5baSBill Taylor * Output:
103*9e39c5baSBill Taylor * none
104*9e39c5baSBill Taylor *
105*9e39c5baSBill Taylor * Returns:
106*9e39c5baSBill Taylor * none
107*9e39c5baSBill Taylor *
108*9e39c5baSBill Taylor */
109*9e39c5baSBill Taylor void
dapl_pz_dealloc(IN DAPL_PZ * pz)110*9e39c5baSBill Taylor dapl_pz_dealloc(
111*9e39c5baSBill Taylor IN DAPL_PZ *pz)
112*9e39c5baSBill Taylor {
113*9e39c5baSBill Taylor /* reset magic to prevent reuse */
114*9e39c5baSBill Taylor pz->header.magic = DAPL_MAGIC_INVALID;
115*9e39c5baSBill Taylor dapl_ia_unlink_pz(pz->header.owner_ia, pz);
116*9e39c5baSBill Taylor dapl_os_lock_destroy(&pz->header.lock);
117*9e39c5baSBill Taylor
118*9e39c5baSBill Taylor dapl_os_free(pz, sizeof (DAPL_PZ));
119*9e39c5baSBill Taylor }
120