1*7c478bd9Sstevel@tonic-gate /*
2*7c478bd9Sstevel@tonic-gate * CDDL HEADER START
3*7c478bd9Sstevel@tonic-gate *
4*7c478bd9Sstevel@tonic-gate * The contents of this file are subject to the terms of the
5*7c478bd9Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only
6*7c478bd9Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance
7*7c478bd9Sstevel@tonic-gate * with the License.
8*7c478bd9Sstevel@tonic-gate *
9*7c478bd9Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10*7c478bd9Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing.
11*7c478bd9Sstevel@tonic-gate * See the License for the specific language governing permissions
12*7c478bd9Sstevel@tonic-gate * and limitations under the License.
13*7c478bd9Sstevel@tonic-gate *
14*7c478bd9Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each
15*7c478bd9Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16*7c478bd9Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the
17*7c478bd9Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying
18*7c478bd9Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner]
19*7c478bd9Sstevel@tonic-gate *
20*7c478bd9Sstevel@tonic-gate * CDDL HEADER END
21*7c478bd9Sstevel@tonic-gate */
22*7c478bd9Sstevel@tonic-gate /*
23*7c478bd9Sstevel@tonic-gate * Copyright 2003 Sun Microsystems, Inc. All rights reserved.
24*7c478bd9Sstevel@tonic-gate * Use is subject to license terms.
25*7c478bd9Sstevel@tonic-gate */
26*7c478bd9Sstevel@tonic-gate
27*7c478bd9Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI"
28*7c478bd9Sstevel@tonic-gate
29*7c478bd9Sstevel@tonic-gate /*
30*7c478bd9Sstevel@tonic-gate * DESCRIPTION: Contains the map update thread and related code.
31*7c478bd9Sstevel@tonic-gate */
32*7c478bd9Sstevel@tonic-gate
33*7c478bd9Sstevel@tonic-gate #include <unistd.h>
34*7c478bd9Sstevel@tonic-gate #include <syslog.h>
35*7c478bd9Sstevel@tonic-gate #include <ndbm.h>
36*7c478bd9Sstevel@tonic-gate #include <thread.h>
37*7c478bd9Sstevel@tonic-gate #include <unistd.h>
38*7c478bd9Sstevel@tonic-gate #include <strings.h>
39*7c478bd9Sstevel@tonic-gate #include "ypsym.h"
40*7c478bd9Sstevel@tonic-gate #include "ypdefs.h"
41*7c478bd9Sstevel@tonic-gate #include "shim.h"
42*7c478bd9Sstevel@tonic-gate #include "yptol.h"
43*7c478bd9Sstevel@tonic-gate #include "../ldap_util.h"
44*7c478bd9Sstevel@tonic-gate
45*7c478bd9Sstevel@tonic-gate /* Enable standard YP code features defined in ypdefs.h */
46*7c478bd9Sstevel@tonic-gate USE_YP_PREFIX
47*7c478bd9Sstevel@tonic-gate USE_YP_MASTER_NAME
48*7c478bd9Sstevel@tonic-gate USE_YP_LAST_MODIFIED
49*7c478bd9Sstevel@tonic-gate USE_YP_INPUT_FILE
50*7c478bd9Sstevel@tonic-gate USE_YP_OUTPUT_NAME
51*7c478bd9Sstevel@tonic-gate USE_YP_DOMAIN_NAME
52*7c478bd9Sstevel@tonic-gate USE_YP_SECURE
53*7c478bd9Sstevel@tonic-gate USE_YP_INTERDOMAIN
54*7c478bd9Sstevel@tonic-gate
55*7c478bd9Sstevel@tonic-gate /*
56*7c478bd9Sstevel@tonic-gate * Decs
57*7c478bd9Sstevel@tonic-gate */
58*7c478bd9Sstevel@tonic-gate suc_code update_from_dit(map_ctrl *, datum *);
59*7c478bd9Sstevel@tonic-gate void * update_thread(void *);
60*7c478bd9Sstevel@tonic-gate
61*7c478bd9Sstevel@tonic-gate /*
62*7c478bd9Sstevel@tonic-gate * Globals
63*7c478bd9Sstevel@tonic-gate */
64*7c478bd9Sstevel@tonic-gate extern pid_t parent_pid;
65*7c478bd9Sstevel@tonic-gate
66*7c478bd9Sstevel@tonic-gate /*
67*7c478bd9Sstevel@tonic-gate * FUNCTION: update_entry_if_required()
68*7c478bd9Sstevel@tonic-gate *
69*7c478bd9Sstevel@tonic-gate * DESCRIPTION: Determines if an entry is to be updated and if it is does the
70*7c478bd9Sstevel@tonic-gate * update.
71*7c478bd9Sstevel@tonic-gate *
72*7c478bd9Sstevel@tonic-gate * GIVEN : Pointer to the open map ctrl
73*7c478bd9Sstevel@tonic-gate * Pointer to the entry key
74*7c478bd9Sstevel@tonic-gate *
75*7c478bd9Sstevel@tonic-gate * RETURNS : SUCCESS = Entry is in a state to be returned to the client
76*7c478bd9Sstevel@tonic-gate * i.e. either got updated, did not need to be updated or we are
77*7c478bd9Sstevel@tonic-gate * in a mode where it is acceptable to return out of date
78*7c478bd9Sstevel@tonic-gate * information.
79*7c478bd9Sstevel@tonic-gate * FAILURE = Entry need an update but it could not be done.
80*7c478bd9Sstevel@tonic-gate */
81*7c478bd9Sstevel@tonic-gate suc_code
update_entry_if_required(map_ctrl * map,datum * key)82*7c478bd9Sstevel@tonic-gate update_entry_if_required(map_ctrl *map, datum *key)
83*7c478bd9Sstevel@tonic-gate {
84*7c478bd9Sstevel@tonic-gate
85*7c478bd9Sstevel@tonic-gate /* Only update individual entries if entire map is */
86*7c478bd9Sstevel@tonic-gate /* not being updated */
87*7c478bd9Sstevel@tonic-gate if (is_map_updating(map))
88*7c478bd9Sstevel@tonic-gate return (SUCCESS);
89*7c478bd9Sstevel@tonic-gate
90*7c478bd9Sstevel@tonic-gate /*
91*7c478bd9Sstevel@tonic-gate * If we are being asked for the order then need to check if
92*7c478bd9Sstevel@tonic-gate * the map is in need of an update. If it is then fake a
93*7c478bd9Sstevel@tonic-gate * recent order. The client will then read the map, using
94*7c478bd9Sstevel@tonic-gate * dbm_firstkey and this will do the update.
95*7c478bd9Sstevel@tonic-gate */
96*7c478bd9Sstevel@tonic-gate if (0 == strncmp(key->dptr, yp_last_modified, yp_last_modified_sz)) {
97*7c478bd9Sstevel@tonic-gate if (has_map_expired(map))
98*7c478bd9Sstevel@tonic-gate update_timestamp(map->entries);
99*7c478bd9Sstevel@tonic-gate return (SUCCESS);
100*7c478bd9Sstevel@tonic-gate }
101*7c478bd9Sstevel@tonic-gate
102*7c478bd9Sstevel@tonic-gate /* Never update special keys. Have no TTLs */
103*7c478bd9Sstevel@tonic-gate if (is_special_key(key))
104*7c478bd9Sstevel@tonic-gate return (SUCCESS);
105*7c478bd9Sstevel@tonic-gate
106*7c478bd9Sstevel@tonic-gate if (!has_entry_expired(map, key))
107*7c478bd9Sstevel@tonic-gate /* Didn't need an update */
108*7c478bd9Sstevel@tonic-gate return (SUCCESS);
109*7c478bd9Sstevel@tonic-gate
110*7c478bd9Sstevel@tonic-gate /* Do the update */
111*7c478bd9Sstevel@tonic-gate return (update_from_dit(map, key));
112*7c478bd9Sstevel@tonic-gate }
113*7c478bd9Sstevel@tonic-gate
114*7c478bd9Sstevel@tonic-gate /*
115*7c478bd9Sstevel@tonic-gate * FUNCTION: update_from_dit()
116*7c478bd9Sstevel@tonic-gate *
117*7c478bd9Sstevel@tonic-gate * DESCRIPTION: Called to update an entry from the DIT
118*7c478bd9Sstevel@tonic-gate *
119*7c478bd9Sstevel@tonic-gate * INPUTS: Map control structure for an open map
120*7c478bd9Sstevel@tonic-gate * Entry key
121*7c478bd9Sstevel@tonic-gate *
122*7c478bd9Sstevel@tonic-gate * OUTPUTS: SUCCESS = Update complete or we are in a mode where it is
123*7c478bd9Sstevel@tonic-gate * acceptable to return out of date information.
124*7c478bd9Sstevel@tonic-gate * FAILURE = Update failed
125*7c478bd9Sstevel@tonic-gate *
126*7c478bd9Sstevel@tonic-gate */
127*7c478bd9Sstevel@tonic-gate suc_code
update_from_dit(map_ctrl * map,datum * key)128*7c478bd9Sstevel@tonic-gate update_from_dit(map_ctrl *map, datum *key)
129*7c478bd9Sstevel@tonic-gate {
130*7c478bd9Sstevel@tonic-gate datum dat;
131*7c478bd9Sstevel@tonic-gate int ret;
132*7c478bd9Sstevel@tonic-gate suc_code res;
133*7c478bd9Sstevel@tonic-gate
134*7c478bd9Sstevel@tonic-gate /*
135*7c478bd9Sstevel@tonic-gate * Netgroup maps are a special case we cannot update just one entry so
136*7c478bd9Sstevel@tonic-gate * update the entire map instead.
137*7c478bd9Sstevel@tonic-gate */
138*7c478bd9Sstevel@tonic-gate if ((0 == strcmp(map->map_name, NETGROUP_BYHOST)) ||
139*7c478bd9Sstevel@tonic-gate (0 == strcmp(map->map_name, NETGROUP_BYUSER))) {
140*7c478bd9Sstevel@tonic-gate return (update_map_if_required(map, FALSE));
141*7c478bd9Sstevel@tonic-gate }
142*7c478bd9Sstevel@tonic-gate
143*7c478bd9Sstevel@tonic-gate /* Read entry from the DIT */
144*7c478bd9Sstevel@tonic-gate ret = read_from_dit(map->map_name, map->domain, key, &dat);
145*7c478bd9Sstevel@tonic-gate
146*7c478bd9Sstevel@tonic-gate /* Check that we got something */
147*7c478bd9Sstevel@tonic-gate if (NULL == dat.dptr) {
148*7c478bd9Sstevel@tonic-gate if (0 == ret) {
149*7c478bd9Sstevel@tonic-gate /*
150*7c478bd9Sstevel@tonic-gate * In a mode where it is acceptable to return out of
151*7c478bd9Sstevel@tonic-gate * date information.
152*7c478bd9Sstevel@tonic-gate */
153*7c478bd9Sstevel@tonic-gate logmsg(MSG_NOTIMECHECK, LOG_INFO,
154*7c478bd9Sstevel@tonic-gate "LDAP inaccessible returning old information");
155*7c478bd9Sstevel@tonic-gate return (SUCCESS);
156*7c478bd9Sstevel@tonic-gate } else {
157*7c478bd9Sstevel@tonic-gate /*
158*7c478bd9Sstevel@tonic-gate * In a mode where it is not acceptable to return out
159*7c478bd9Sstevel@tonic-gate * of date information.
160*7c478bd9Sstevel@tonic-gate *
161*7c478bd9Sstevel@tonic-gate * If the error positviely indicates that there is no
162*7c478bd9Sstevel@tonic-gate * such entry delete it. For errors where object may
163*7c478bd9Sstevel@tonic-gate * still exist in the DIT leave it.
164*7c478bd9Sstevel@tonic-gate */
165*7c478bd9Sstevel@tonic-gate if (MAP_NO_MATCHING_KEY == ret) {
166*7c478bd9Sstevel@tonic-gate /*
167*7c478bd9Sstevel@tonic-gate * Don't log errors. If the entry was not
168*7c478bd9Sstevel@tonic-gate * already present then no problem. The user
169*7c478bd9Sstevel@tonic-gate * just asked us for a non existant entry.
170*7c478bd9Sstevel@tonic-gate */
171*7c478bd9Sstevel@tonic-gate dbm_delete(map->entries, *key);
172*7c478bd9Sstevel@tonic-gate dbm_delete(map->ttl, *key);
173*7c478bd9Sstevel@tonic-gate }
174*7c478bd9Sstevel@tonic-gate return (FAILURE);
175*7c478bd9Sstevel@tonic-gate }
176*7c478bd9Sstevel@tonic-gate }
177*7c478bd9Sstevel@tonic-gate
178*7c478bd9Sstevel@tonic-gate /* Write it to DBM */
179*7c478bd9Sstevel@tonic-gate res = dbm_store(map->entries, *key, dat, DBM_REPLACE);
180*7c478bd9Sstevel@tonic-gate sfree(dat.dptr);
181*7c478bd9Sstevel@tonic-gate
182*7c478bd9Sstevel@tonic-gate if (SUCCESS != res)
183*7c478bd9Sstevel@tonic-gate return (FAILURE);
184*7c478bd9Sstevel@tonic-gate
185*7c478bd9Sstevel@tonic-gate /* Update TTL */
186*7c478bd9Sstevel@tonic-gate update_entry_ttl(map, key, TTL_RUNNING);
187*7c478bd9Sstevel@tonic-gate
188*7c478bd9Sstevel@tonic-gate return (SUCCESS);
189*7c478bd9Sstevel@tonic-gate }
190*7c478bd9Sstevel@tonic-gate
191*7c478bd9Sstevel@tonic-gate /*
192*7c478bd9Sstevel@tonic-gate * FUNCTION: update_map_if_required()
193*7c478bd9Sstevel@tonic-gate *
194*7c478bd9Sstevel@tonic-gate * DESCRIPTION: Called to update an entire map if it is out of date. Map ctrl
195*7c478bd9Sstevel@tonic-gate * must be locked before this is called. This handles checking if
196*7c478bd9Sstevel@tonic-gate * the map is already being updated. It is important that this is
197*7c478bd9Sstevel@tonic-gate * done atomically with obtaining the maps update lock.
198*7c478bd9Sstevel@tonic-gate *
199*7c478bd9Sstevel@tonic-gate * INPUTS: Map control structure for an open map
200*7c478bd9Sstevel@tonic-gate * Flag indication if we should wait for completion
201*7c478bd9Sstevel@tonic-gate *
202*7c478bd9Sstevel@tonic-gate * OUTPUTS: SUCCESS = Map update initiated
203*7c478bd9Sstevel@tonic-gate * FAILURE = Map update not initiated
204*7c478bd9Sstevel@tonic-gate */
205*7c478bd9Sstevel@tonic-gate suc_code
update_map_if_required(map_ctrl * map,bool_t wait)206*7c478bd9Sstevel@tonic-gate update_map_if_required(map_ctrl *map, bool_t wait)
207*7c478bd9Sstevel@tonic-gate {
208*7c478bd9Sstevel@tonic-gate thread_t tid;
209*7c478bd9Sstevel@tonic-gate map_ctrl *new_map;
210*7c478bd9Sstevel@tonic-gate suc_code res;
211*7c478bd9Sstevel@tonic-gate long flags;
212*7c478bd9Sstevel@tonic-gate
213*7c478bd9Sstevel@tonic-gate if (wait) {
214*7c478bd9Sstevel@tonic-gate /*
215*7c478bd9Sstevel@tonic-gate * Actually get the lock
216*7c478bd9Sstevel@tonic-gate *
217*7c478bd9Sstevel@tonic-gate * May block so unlock map_ctrl while it is done
218*7c478bd9Sstevel@tonic-gate */
219*7c478bd9Sstevel@tonic-gate unlock_map_ctrl(map);
220*7c478bd9Sstevel@tonic-gate res = lock_map_update(map);
221*7c478bd9Sstevel@tonic-gate lock_map_ctrl(map);
222*7c478bd9Sstevel@tonic-gate if (SUCCESS != res) {
223*7c478bd9Sstevel@tonic-gate logmsg(MSG_NOTIMECHECK, LOG_ERR,
224*7c478bd9Sstevel@tonic-gate "Could not lock map %s for update",
225*7c478bd9Sstevel@tonic-gate map->map_name);
226*7c478bd9Sstevel@tonic-gate return (FAILURE);
227*7c478bd9Sstevel@tonic-gate }
228*7c478bd9Sstevel@tonic-gate } else {
229*7c478bd9Sstevel@tonic-gate /* If not waiting try to get the lock */
230*7c478bd9Sstevel@tonic-gate switch (try_lock_map_update(map)) {
231*7c478bd9Sstevel@tonic-gate case 0:
232*7c478bd9Sstevel@tonic-gate /*
233*7c478bd9Sstevel@tonic-gate * We got the lock. Continue to start an update.
234*7c478bd9Sstevel@tonic-gate */
235*7c478bd9Sstevel@tonic-gate break;
236*7c478bd9Sstevel@tonic-gate
237*7c478bd9Sstevel@tonic-gate case EBUSY:
238*7c478bd9Sstevel@tonic-gate /*
239*7c478bd9Sstevel@tonic-gate * Some one else got the lock. OK they are
240*7c478bd9Sstevel@tonic-gate * doing the update so we can just return.
241*7c478bd9Sstevel@tonic-gate */
242*7c478bd9Sstevel@tonic-gate return (SUCCESS);
243*7c478bd9Sstevel@tonic-gate
244*7c478bd9Sstevel@tonic-gate default:
245*7c478bd9Sstevel@tonic-gate /*
246*7c478bd9Sstevel@tonic-gate * Some serious problem with lock.
247*7c478bd9Sstevel@tonic-gate */
248*7c478bd9Sstevel@tonic-gate return (FAILURE);
249*7c478bd9Sstevel@tonic-gate }
250*7c478bd9Sstevel@tonic-gate }
251*7c478bd9Sstevel@tonic-gate
252*7c478bd9Sstevel@tonic-gate /*
253*7c478bd9Sstevel@tonic-gate * If we get here are holding the update lock. Make a final check that
254*7c478bd9Sstevel@tonic-gate * nobody beat us to the map update while we were getting it.
255*7c478bd9Sstevel@tonic-gate */
256*7c478bd9Sstevel@tonic-gate if (!has_map_expired(map)) {
257*7c478bd9Sstevel@tonic-gate /* A big waste of time. Somebody else did the update */
258*7c478bd9Sstevel@tonic-gate unlock_map_update(map);
259*7c478bd9Sstevel@tonic-gate return (SUCCESS);
260*7c478bd9Sstevel@tonic-gate }
261*7c478bd9Sstevel@tonic-gate
262*7c478bd9Sstevel@tonic-gate /*
263*7c478bd9Sstevel@tonic-gate * We got the lock and nobody beat us to doing the update. Start our
264*7c478bd9Sstevel@tonic-gate * own update.
265*7c478bd9Sstevel@tonic-gate *
266*7c478bd9Sstevel@tonic-gate * Thread will free the update lock when update is complete.
267*7c478bd9Sstevel@tonic-gate */
268*7c478bd9Sstevel@tonic-gate
269*7c478bd9Sstevel@tonic-gate
270*7c478bd9Sstevel@tonic-gate /*
271*7c478bd9Sstevel@tonic-gate * Make a copy of the map_ctrl structure so the update thread has an
272*7c478bd9Sstevel@tonic-gate * independent version to work with. Note: Must not be on stack.
273*7c478bd9Sstevel@tonic-gate *
274*7c478bd9Sstevel@tonic-gate * On exit the update thread must free this.
275*7c478bd9Sstevel@tonic-gate */
276*7c478bd9Sstevel@tonic-gate new_map = dup_map_ctrl(map);
277*7c478bd9Sstevel@tonic-gate if (NULL == new_map) {
278*7c478bd9Sstevel@tonic-gate unlock_map_update(map);
279*7c478bd9Sstevel@tonic-gate return (FAILURE);
280*7c478bd9Sstevel@tonic-gate }
281*7c478bd9Sstevel@tonic-gate
282*7c478bd9Sstevel@tonic-gate /*
283*7c478bd9Sstevel@tonic-gate * While thread is running unlock map so other processes can
284*7c478bd9Sstevel@tonic-gate * execute non update related accesses
285*7c478bd9Sstevel@tonic-gate */
286*7c478bd9Sstevel@tonic-gate unlock_map_ctrl(map);
287*7c478bd9Sstevel@tonic-gate
288*7c478bd9Sstevel@tonic-gate flags = THR_BOUND | THR_NEW_LWP;
289*7c478bd9Sstevel@tonic-gate
290*7c478bd9Sstevel@tonic-gate /*
291*7c478bd9Sstevel@tonic-gate * If we are not going to thr_join then need to create detached.
292*7c478bd9Sstevel@tonic-gate * This prevents a zombie being left when nobody joins us.
293*7c478bd9Sstevel@tonic-gate */
294*7c478bd9Sstevel@tonic-gate if (!wait && (getpid() == parent_pid))
295*7c478bd9Sstevel@tonic-gate flags |= THR_DETACHED;
296*7c478bd9Sstevel@tonic-gate
297*7c478bd9Sstevel@tonic-gate /* Kick off update thread */
298*7c478bd9Sstevel@tonic-gate if (0 != thr_create(NULL, NULL, update_thread, new_map,
299*7c478bd9Sstevel@tonic-gate flags, &tid)) {
300*7c478bd9Sstevel@tonic-gate logmsg(MSG_NOTIMECHECK, LOG_ERR,
301*7c478bd9Sstevel@tonic-gate "Could not create NIS update thread");
302*7c478bd9Sstevel@tonic-gate free_map_ctrl(new_map);
303*7c478bd9Sstevel@tonic-gate unlock_map_update(map);
304*7c478bd9Sstevel@tonic-gate if (SUCCESS != lock_map_ctrl(map))
305*7c478bd9Sstevel@tonic-gate logmsg(MSG_NOTIMECHECK, LOG_ERR,
306*7c478bd9Sstevel@tonic-gate "Could not acquire update lock for %s", map->map_name);
307*7c478bd9Sstevel@tonic-gate return (FAILURE);
308*7c478bd9Sstevel@tonic-gate }
309*7c478bd9Sstevel@tonic-gate
310*7c478bd9Sstevel@tonic-gate if (wait) {
311*7c478bd9Sstevel@tonic-gate /* May block but no problem map_ctrl is already unlocked. */
312*7c478bd9Sstevel@tonic-gate thr_join(tid, NULL, NULL);
313*7c478bd9Sstevel@tonic-gate }
314*7c478bd9Sstevel@tonic-gate
315*7c478bd9Sstevel@tonic-gate /* Re acquire lock */
316*7c478bd9Sstevel@tonic-gate if (1 != lock_map_ctrl(map)) {
317*7c478bd9Sstevel@tonic-gate logmsg(MSG_NOTIMECHECK, LOG_ERR,
318*7c478bd9Sstevel@tonic-gate "Could not re-acquire lock for %s", map->map_name);
319*7c478bd9Sstevel@tonic-gate return (FAILURE);
320*7c478bd9Sstevel@tonic-gate }
321*7c478bd9Sstevel@tonic-gate
322*7c478bd9Sstevel@tonic-gate return (SUCCESS);
323*7c478bd9Sstevel@tonic-gate }
324*7c478bd9Sstevel@tonic-gate
325*7c478bd9Sstevel@tonic-gate /*
326*7c478bd9Sstevel@tonic-gate * FUNCTION: update_thread()
327*7c478bd9Sstevel@tonic-gate *
328*7c478bd9Sstevel@tonic-gate * DESCRIPTION: The update thread this is called to update an entire NIS map.
329*7c478bd9Sstevel@tonic-gate * if several NIS maps are found to be out of date several
330*7c478bd9Sstevel@tonic-gate * instances of this may be running at the same time.
331*7c478bd9Sstevel@tonic-gate *
332*7c478bd9Sstevel@tonic-gate * Since we are using a duplicate map_ctrl we do not have to lock
333*7c478bd9Sstevel@tonic-gate * it. If we did would end up using the same mutex as the parent
334*7c478bd9Sstevel@tonic-gate * map ctrl an possibly deadlocking.
335*7c478bd9Sstevel@tonic-gate *
336*7c478bd9Sstevel@tonic-gate * INPUTS: Map handle (because we need access to name and lock)
337*7c478bd9Sstevel@tonic-gate *
338*7c478bd9Sstevel@tonic-gate * OUTPUTS: None exits when finished.
339*7c478bd9Sstevel@tonic-gate */
340*7c478bd9Sstevel@tonic-gate
341*7c478bd9Sstevel@tonic-gate void *
update_thread(void * arg)342*7c478bd9Sstevel@tonic-gate update_thread(void *arg)
343*7c478bd9Sstevel@tonic-gate {
344*7c478bd9Sstevel@tonic-gate void *ret = (void *)-1;
345*7c478bd9Sstevel@tonic-gate map_ctrl *map;
346*7c478bd9Sstevel@tonic-gate
347*7c478bd9Sstevel@tonic-gate /* Cast argument pointer to correct type */
348*7c478bd9Sstevel@tonic-gate map = (map_ctrl *)arg;
349*7c478bd9Sstevel@tonic-gate
350*7c478bd9Sstevel@tonic-gate /* Actually do the work */
351*7c478bd9Sstevel@tonic-gate if (SUCCESS == update_map_from_dit(map, FALSE))
352*7c478bd9Sstevel@tonic-gate ret = 0;
353*7c478bd9Sstevel@tonic-gate
354*7c478bd9Sstevel@tonic-gate /* Update complete or failed */
355*7c478bd9Sstevel@tonic-gate unlock_map_update(map);
356*7c478bd9Sstevel@tonic-gate
357*7c478bd9Sstevel@tonic-gate /* Free up duplicate copy of the map_ctrl */
358*7c478bd9Sstevel@tonic-gate free_map_ctrl(map);
359*7c478bd9Sstevel@tonic-gate
360*7c478bd9Sstevel@tonic-gate thr_exit(ret);
361*7c478bd9Sstevel@tonic-gate }
362*7c478bd9Sstevel@tonic-gate
363*7c478bd9Sstevel@tonic-gate /*
364*7c478bd9Sstevel@tonic-gate * FUNCTION : is_special_key()
365*7c478bd9Sstevel@tonic-gate *
366*7c478bd9Sstevel@tonic-gate * DESCRIPTION: Works out if a given key is one of the special ones. We just
367*7c478bd9Sstevel@tonic-gate * check for the "YP_" prefix. This is not 100% safe but if
368*7c478bd9Sstevel@tonic-gate * valid keys with a "YP_" prefix exist in the DIT then a lot of
369*7c478bd9Sstevel@tonic-gate * other parts of NIS wont work.
370*7c478bd9Sstevel@tonic-gate */
371*7c478bd9Sstevel@tonic-gate bool_t
is_special_key(datum * key)372*7c478bd9Sstevel@tonic-gate is_special_key(datum *key)
373*7c478bd9Sstevel@tonic-gate {
374*7c478bd9Sstevel@tonic-gate if (0 == strncmp(key->dptr, yp_prefix, yp_prefix_sz))
375*7c478bd9Sstevel@tonic-gate return (TRUE);
376*7c478bd9Sstevel@tonic-gate
377*7c478bd9Sstevel@tonic-gate return (FALSE);
378*7c478bd9Sstevel@tonic-gate }
379