1*0Sstevel@tonic-gate /*
2*0Sstevel@tonic-gate * CDDL HEADER START
3*0Sstevel@tonic-gate *
4*0Sstevel@tonic-gate * The contents of this file are subject to the terms of the
5*0Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only
6*0Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance
7*0Sstevel@tonic-gate * with the License.
8*0Sstevel@tonic-gate *
9*0Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10*0Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing.
11*0Sstevel@tonic-gate * See the License for the specific language governing permissions
12*0Sstevel@tonic-gate * and limitations under the License.
13*0Sstevel@tonic-gate *
14*0Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each
15*0Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16*0Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the
17*0Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying
18*0Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner]
19*0Sstevel@tonic-gate *
20*0Sstevel@tonic-gate * CDDL HEADER END
21*0Sstevel@tonic-gate */
22*0Sstevel@tonic-gate /*
23*0Sstevel@tonic-gate * Copyright (c) 2002-2003, Network Appliance, Inc. All rights reserved.
24*0Sstevel@tonic-gate */
25*0Sstevel@tonic-gate
26*0Sstevel@tonic-gate /*
27*0Sstevel@tonic-gate * Copyright 2003 Sun Microsystems, Inc. All rights reserved.
28*0Sstevel@tonic-gate * Use is subject to license terms.
29*0Sstevel@tonic-gate */
30*0Sstevel@tonic-gate
31*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI"
32*0Sstevel@tonic-gate
33*0Sstevel@tonic-gate /*
34*0Sstevel@tonic-gate *
35*0Sstevel@tonic-gate * MODULE: dat_dr.c
36*0Sstevel@tonic-gate *
37*0Sstevel@tonic-gate * PURPOSE: dynamic registry implementation
38*0Sstevel@tonic-gate *
39*0Sstevel@tonic-gate * $Id: dat_dr.c,v 1.12 2003/08/20 14:28:40 hobie16 Exp $
40*0Sstevel@tonic-gate */
41*0Sstevel@tonic-gate
42*0Sstevel@tonic-gate
43*0Sstevel@tonic-gate #include "dat_dr.h"
44*0Sstevel@tonic-gate
45*0Sstevel@tonic-gate #include "dat_dictionary.h"
46*0Sstevel@tonic-gate
47*0Sstevel@tonic-gate
48*0Sstevel@tonic-gate /*
49*0Sstevel@tonic-gate *
50*0Sstevel@tonic-gate * Global Variables
51*0Sstevel@tonic-gate *
52*0Sstevel@tonic-gate */
53*0Sstevel@tonic-gate
54*0Sstevel@tonic-gate static DAT_OS_LOCK g_dr_lock;
55*0Sstevel@tonic-gate static DAT_DICTIONARY *g_dr_dictionary = NULL;
56*0Sstevel@tonic-gate
57*0Sstevel@tonic-gate
58*0Sstevel@tonic-gate /*
59*0Sstevel@tonic-gate *
60*0Sstevel@tonic-gate * External Functions
61*0Sstevel@tonic-gate *
62*0Sstevel@tonic-gate */
63*0Sstevel@tonic-gate
64*0Sstevel@tonic-gate
65*0Sstevel@tonic-gate /*
66*0Sstevel@tonic-gate * Function: dat_dr_init
67*0Sstevel@tonic-gate */
68*0Sstevel@tonic-gate
69*0Sstevel@tonic-gate DAT_RETURN
dat_dr_init(void)70*0Sstevel@tonic-gate dat_dr_init(void)
71*0Sstevel@tonic-gate {
72*0Sstevel@tonic-gate DAT_RETURN status;
73*0Sstevel@tonic-gate
74*0Sstevel@tonic-gate status = dat_os_lock_init(&g_dr_lock);
75*0Sstevel@tonic-gate if (DAT_SUCCESS != status) {
76*0Sstevel@tonic-gate return (status);
77*0Sstevel@tonic-gate }
78*0Sstevel@tonic-gate
79*0Sstevel@tonic-gate status = dat_dictionary_create(&g_dr_dictionary);
80*0Sstevel@tonic-gate if (DAT_SUCCESS != status) {
81*0Sstevel@tonic-gate return (status);
82*0Sstevel@tonic-gate }
83*0Sstevel@tonic-gate
84*0Sstevel@tonic-gate return (DAT_SUCCESS);
85*0Sstevel@tonic-gate }
86*0Sstevel@tonic-gate
87*0Sstevel@tonic-gate
88*0Sstevel@tonic-gate /*
89*0Sstevel@tonic-gate * Function: dat_dr_fini
90*0Sstevel@tonic-gate */
91*0Sstevel@tonic-gate
92*0Sstevel@tonic-gate DAT_RETURN
dat_dr_fini(void)93*0Sstevel@tonic-gate dat_dr_fini(void)
94*0Sstevel@tonic-gate {
95*0Sstevel@tonic-gate DAT_RETURN status;
96*0Sstevel@tonic-gate
97*0Sstevel@tonic-gate status = dat_os_lock_destroy(&g_dr_lock);
98*0Sstevel@tonic-gate if (DAT_SUCCESS != status) {
99*0Sstevel@tonic-gate return (status);
100*0Sstevel@tonic-gate }
101*0Sstevel@tonic-gate
102*0Sstevel@tonic-gate status = dat_dictionary_destroy(g_dr_dictionary);
103*0Sstevel@tonic-gate if (DAT_SUCCESS != status) {
104*0Sstevel@tonic-gate return (status);
105*0Sstevel@tonic-gate }
106*0Sstevel@tonic-gate
107*0Sstevel@tonic-gate return (DAT_SUCCESS);
108*0Sstevel@tonic-gate }
109*0Sstevel@tonic-gate
110*0Sstevel@tonic-gate
111*0Sstevel@tonic-gate /*
112*0Sstevel@tonic-gate * Function: dat_dr_insert
113*0Sstevel@tonic-gate */
114*0Sstevel@tonic-gate
115*0Sstevel@tonic-gate extern DAT_RETURN
dat_dr_insert(IN const DAT_PROVIDER_INFO * info,IN DAT_DR_ENTRY * entry)116*0Sstevel@tonic-gate dat_dr_insert(
117*0Sstevel@tonic-gate IN const DAT_PROVIDER_INFO *info,
118*0Sstevel@tonic-gate IN DAT_DR_ENTRY *entry)
119*0Sstevel@tonic-gate {
120*0Sstevel@tonic-gate DAT_RETURN status;
121*0Sstevel@tonic-gate DAT_DICTIONARY_ENTRY dict_entry;
122*0Sstevel@tonic-gate DAT_DR_ENTRY *data;
123*0Sstevel@tonic-gate
124*0Sstevel@tonic-gate data = dat_os_alloc(sizeof (DAT_DR_ENTRY));
125*0Sstevel@tonic-gate if (NULL == data) {
126*0Sstevel@tonic-gate status = DAT_ERROR(DAT_INSUFFICIENT_RESOURCES,
127*0Sstevel@tonic-gate DAT_RESOURCE_MEMORY);
128*0Sstevel@tonic-gate goto bail;
129*0Sstevel@tonic-gate }
130*0Sstevel@tonic-gate
131*0Sstevel@tonic-gate *data = *entry;
132*0Sstevel@tonic-gate
133*0Sstevel@tonic-gate dict_entry = NULL;
134*0Sstevel@tonic-gate status = dat_dictionary_entry_create(&dict_entry);
135*0Sstevel@tonic-gate if (DAT_SUCCESS != status) {
136*0Sstevel@tonic-gate goto bail;
137*0Sstevel@tonic-gate }
138*0Sstevel@tonic-gate
139*0Sstevel@tonic-gate dat_os_lock(&g_dr_lock);
140*0Sstevel@tonic-gate
141*0Sstevel@tonic-gate status = dat_dictionary_insert(g_dr_dictionary,
142*0Sstevel@tonic-gate dict_entry,
143*0Sstevel@tonic-gate info,
144*0Sstevel@tonic-gate (DAT_DICTIONARY_DATA *) data);
145*0Sstevel@tonic-gate
146*0Sstevel@tonic-gate dat_os_unlock(&g_dr_lock);
147*0Sstevel@tonic-gate
148*0Sstevel@tonic-gate bail:
149*0Sstevel@tonic-gate if (DAT_SUCCESS != status) {
150*0Sstevel@tonic-gate if (NULL != data) {
151*0Sstevel@tonic-gate dat_os_free(data, sizeof (DAT_DR_ENTRY));
152*0Sstevel@tonic-gate }
153*0Sstevel@tonic-gate
154*0Sstevel@tonic-gate
155*0Sstevel@tonic-gate if (NULL != dict_entry) {
156*0Sstevel@tonic-gate (void) dat_dictionary_entry_destroy(dict_entry);
157*0Sstevel@tonic-gate }
158*0Sstevel@tonic-gate }
159*0Sstevel@tonic-gate
160*0Sstevel@tonic-gate return (status);
161*0Sstevel@tonic-gate }
162*0Sstevel@tonic-gate
163*0Sstevel@tonic-gate
164*0Sstevel@tonic-gate /*
165*0Sstevel@tonic-gate * Function: dat_dr_remove
166*0Sstevel@tonic-gate */
167*0Sstevel@tonic-gate
168*0Sstevel@tonic-gate extern DAT_RETURN
dat_dr_remove(IN const DAT_PROVIDER_INFO * info)169*0Sstevel@tonic-gate dat_dr_remove(
170*0Sstevel@tonic-gate IN const DAT_PROVIDER_INFO *info)
171*0Sstevel@tonic-gate {
172*0Sstevel@tonic-gate DAT_DR_ENTRY *data;
173*0Sstevel@tonic-gate DAT_DICTIONARY_ENTRY dict_entry;
174*0Sstevel@tonic-gate DAT_RETURN status;
175*0Sstevel@tonic-gate
176*0Sstevel@tonic-gate dat_os_lock(&g_dr_lock);
177*0Sstevel@tonic-gate
178*0Sstevel@tonic-gate status = dat_dictionary_search(g_dr_dictionary,
179*0Sstevel@tonic-gate info,
180*0Sstevel@tonic-gate (DAT_DICTIONARY_DATA *) &data);
181*0Sstevel@tonic-gate
182*0Sstevel@tonic-gate if (DAT_SUCCESS != status) {
183*0Sstevel@tonic-gate /* return status from dat_dictionary_search() */
184*0Sstevel@tonic-gate goto bail;
185*0Sstevel@tonic-gate }
186*0Sstevel@tonic-gate
187*0Sstevel@tonic-gate if (0 != data->ref_count) {
188*0Sstevel@tonic-gate status = DAT_ERROR(DAT_PROVIDER_IN_USE, 0);
189*0Sstevel@tonic-gate goto bail;
190*0Sstevel@tonic-gate }
191*0Sstevel@tonic-gate
192*0Sstevel@tonic-gate dict_entry = NULL;
193*0Sstevel@tonic-gate status = dat_dictionary_remove(g_dr_dictionary,
194*0Sstevel@tonic-gate &dict_entry,
195*0Sstevel@tonic-gate info,
196*0Sstevel@tonic-gate (DAT_DICTIONARY_DATA *) &data);
197*0Sstevel@tonic-gate
198*0Sstevel@tonic-gate if (DAT_SUCCESS != status) {
199*0Sstevel@tonic-gate /* return status from dat_dictionary_remove() */
200*0Sstevel@tonic-gate goto bail;
201*0Sstevel@tonic-gate }
202*0Sstevel@tonic-gate
203*0Sstevel@tonic-gate dat_os_free(data, sizeof (DAT_DR_ENTRY));
204*0Sstevel@tonic-gate
205*0Sstevel@tonic-gate bail:
206*0Sstevel@tonic-gate dat_os_unlock(&g_dr_lock);
207*0Sstevel@tonic-gate
208*0Sstevel@tonic-gate if (NULL != dict_entry) {
209*0Sstevel@tonic-gate (void) dat_dictionary_entry_destroy(dict_entry);
210*0Sstevel@tonic-gate }
211*0Sstevel@tonic-gate
212*0Sstevel@tonic-gate return (status);
213*0Sstevel@tonic-gate }
214*0Sstevel@tonic-gate
215*0Sstevel@tonic-gate
216*0Sstevel@tonic-gate /*
217*0Sstevel@tonic-gate * Function: dat_dr_provider_open
218*0Sstevel@tonic-gate */
219*0Sstevel@tonic-gate
220*0Sstevel@tonic-gate extern DAT_RETURN
dat_dr_provider_open(IN const DAT_PROVIDER_INFO * info,OUT DAT_IA_OPEN_FUNC * p_ia_open_func)221*0Sstevel@tonic-gate dat_dr_provider_open(
222*0Sstevel@tonic-gate IN const DAT_PROVIDER_INFO *info,
223*0Sstevel@tonic-gate OUT DAT_IA_OPEN_FUNC *p_ia_open_func)
224*0Sstevel@tonic-gate {
225*0Sstevel@tonic-gate DAT_RETURN status;
226*0Sstevel@tonic-gate DAT_DR_ENTRY *data;
227*0Sstevel@tonic-gate
228*0Sstevel@tonic-gate dat_os_lock(&g_dr_lock);
229*0Sstevel@tonic-gate
230*0Sstevel@tonic-gate status = dat_dictionary_search(g_dr_dictionary,
231*0Sstevel@tonic-gate info,
232*0Sstevel@tonic-gate (DAT_DICTIONARY_DATA *) &data);
233*0Sstevel@tonic-gate
234*0Sstevel@tonic-gate dat_os_unlock(&g_dr_lock);
235*0Sstevel@tonic-gate
236*0Sstevel@tonic-gate if (DAT_SUCCESS == status) {
237*0Sstevel@tonic-gate data->ref_count++;
238*0Sstevel@tonic-gate *p_ia_open_func = data->ia_open_func;
239*0Sstevel@tonic-gate }
240*0Sstevel@tonic-gate
241*0Sstevel@tonic-gate return (status);
242*0Sstevel@tonic-gate }
243*0Sstevel@tonic-gate
244*0Sstevel@tonic-gate
245*0Sstevel@tonic-gate /*
246*0Sstevel@tonic-gate * Function: dat_dr_provider_close
247*0Sstevel@tonic-gate */
248*0Sstevel@tonic-gate
249*0Sstevel@tonic-gate extern DAT_RETURN
dat_dr_provider_close(IN const DAT_PROVIDER_INFO * info)250*0Sstevel@tonic-gate dat_dr_provider_close(
251*0Sstevel@tonic-gate IN const DAT_PROVIDER_INFO *info)
252*0Sstevel@tonic-gate {
253*0Sstevel@tonic-gate DAT_RETURN status;
254*0Sstevel@tonic-gate DAT_DR_ENTRY *data;
255*0Sstevel@tonic-gate
256*0Sstevel@tonic-gate dat_os_lock(&g_dr_lock);
257*0Sstevel@tonic-gate
258*0Sstevel@tonic-gate status = dat_dictionary_search(g_dr_dictionary,
259*0Sstevel@tonic-gate info,
260*0Sstevel@tonic-gate (DAT_DICTIONARY_DATA *) &data);
261*0Sstevel@tonic-gate
262*0Sstevel@tonic-gate dat_os_unlock(&g_dr_lock);
263*0Sstevel@tonic-gate
264*0Sstevel@tonic-gate if (DAT_SUCCESS == status) {
265*0Sstevel@tonic-gate data->ref_count--;
266*0Sstevel@tonic-gate }
267*0Sstevel@tonic-gate
268*0Sstevel@tonic-gate return (status);
269*0Sstevel@tonic-gate }
270*0Sstevel@tonic-gate
271*0Sstevel@tonic-gate
272*0Sstevel@tonic-gate /*
273*0Sstevel@tonic-gate * Function: dat_dr_size
274*0Sstevel@tonic-gate */
275*0Sstevel@tonic-gate
276*0Sstevel@tonic-gate DAT_RETURN
dat_dr_size(OUT DAT_COUNT * size)277*0Sstevel@tonic-gate dat_dr_size(
278*0Sstevel@tonic-gate OUT DAT_COUNT *size)
279*0Sstevel@tonic-gate {
280*0Sstevel@tonic-gate return (dat_dictionary_size(g_dr_dictionary, size));
281*0Sstevel@tonic-gate }
282*0Sstevel@tonic-gate
283*0Sstevel@tonic-gate
284*0Sstevel@tonic-gate /*
285*0Sstevel@tonic-gate * Function: dat_dr_list
286*0Sstevel@tonic-gate */
287*0Sstevel@tonic-gate
288*0Sstevel@tonic-gate DAT_RETURN
dat_dr_list(IN DAT_COUNT max_to_return,OUT DAT_COUNT * entries_returned,OUT DAT_PROVIDER_INFO * (dat_provider_list[]))289*0Sstevel@tonic-gate dat_dr_list(
290*0Sstevel@tonic-gate IN DAT_COUNT max_to_return,
291*0Sstevel@tonic-gate OUT DAT_COUNT *entries_returned,
292*0Sstevel@tonic-gate OUT DAT_PROVIDER_INFO * (dat_provider_list[]))
293*0Sstevel@tonic-gate {
294*0Sstevel@tonic-gate DAT_DR_ENTRY **array;
295*0Sstevel@tonic-gate DAT_COUNT array_size;
296*0Sstevel@tonic-gate DAT_COUNT i;
297*0Sstevel@tonic-gate DAT_RETURN status;
298*0Sstevel@tonic-gate
299*0Sstevel@tonic-gate array = NULL;
300*0Sstevel@tonic-gate status = DAT_SUCCESS;
301*0Sstevel@tonic-gate
302*0Sstevel@tonic-gate /*
303*0Sstevel@tonic-gate * The dictionary size may increase between the call to
304*0Sstevel@tonic-gate * dat_dictionary_size() and dat_dictionary_enumerate().
305*0Sstevel@tonic-gate * Therefore we loop until a successful enumeration is made.
306*0Sstevel@tonic-gate */
307*0Sstevel@tonic-gate *entries_returned = 0;
308*0Sstevel@tonic-gate for (;;) {
309*0Sstevel@tonic-gate status = dat_dictionary_size(g_dr_dictionary, &array_size);
310*0Sstevel@tonic-gate if (status != DAT_SUCCESS) {
311*0Sstevel@tonic-gate goto bail;
312*0Sstevel@tonic-gate }
313*0Sstevel@tonic-gate
314*0Sstevel@tonic-gate if (array_size == 0) {
315*0Sstevel@tonic-gate status = DAT_SUCCESS;
316*0Sstevel@tonic-gate goto bail;
317*0Sstevel@tonic-gate }
318*0Sstevel@tonic-gate
319*0Sstevel@tonic-gate array = dat_os_alloc(array_size * sizeof (DAT_DR_ENTRY *));
320*0Sstevel@tonic-gate if (array == NULL) {
321*0Sstevel@tonic-gate status = DAT_ERROR(DAT_INSUFFICIENT_RESOURCES,
322*0Sstevel@tonic-gate DAT_RESOURCE_MEMORY);
323*0Sstevel@tonic-gate goto bail;
324*0Sstevel@tonic-gate }
325*0Sstevel@tonic-gate
326*0Sstevel@tonic-gate dat_os_lock(&g_dr_lock);
327*0Sstevel@tonic-gate
328*0Sstevel@tonic-gate status = dat_dictionary_enumerate(g_dr_dictionary,
329*0Sstevel@tonic-gate (DAT_DICTIONARY_DATA *) array,
330*0Sstevel@tonic-gate array_size);
331*0Sstevel@tonic-gate
332*0Sstevel@tonic-gate dat_os_unlock(&g_dr_lock);
333*0Sstevel@tonic-gate
334*0Sstevel@tonic-gate if (DAT_SUCCESS == status) {
335*0Sstevel@tonic-gate break;
336*0Sstevel@tonic-gate } else {
337*0Sstevel@tonic-gate dat_os_free(array,
338*0Sstevel@tonic-gate array_size * sizeof (DAT_DR_ENTRY *));
339*0Sstevel@tonic-gate array = NULL;
340*0Sstevel@tonic-gate continue;
341*0Sstevel@tonic-gate }
342*0Sstevel@tonic-gate }
343*0Sstevel@tonic-gate
344*0Sstevel@tonic-gate for (i = 0; (i < max_to_return) && (i < array_size); i++) {
345*0Sstevel@tonic-gate if (NULL == dat_provider_list[i]) {
346*0Sstevel@tonic-gate status = DAT_ERROR(DAT_INVALID_PARAMETER,
347*0Sstevel@tonic-gate DAT_INVALID_ARG3);
348*0Sstevel@tonic-gate goto bail;
349*0Sstevel@tonic-gate }
350*0Sstevel@tonic-gate
351*0Sstevel@tonic-gate *dat_provider_list[i] = array[i]->info;
352*0Sstevel@tonic-gate }
353*0Sstevel@tonic-gate
354*0Sstevel@tonic-gate *entries_returned = i;
355*0Sstevel@tonic-gate
356*0Sstevel@tonic-gate bail:
357*0Sstevel@tonic-gate if (NULL != array) {
358*0Sstevel@tonic-gate dat_os_free(array, array_size * sizeof (DAT_DR_ENTRY *));
359*0Sstevel@tonic-gate }
360*0Sstevel@tonic-gate
361*0Sstevel@tonic-gate return (status);
362*0Sstevel@tonic-gate }
363*0Sstevel@tonic-gate
364*0Sstevel@tonic-gate /*
365*0Sstevel@tonic-gate * Local variables:
366*0Sstevel@tonic-gate * c-indent-level: 4
367*0Sstevel@tonic-gate * c-basic-offset: 4
368*0Sstevel@tonic-gate * tab-width: 8
369*0Sstevel@tonic-gate * End:
370*0Sstevel@tonic-gate */
371