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