2 * Copyright (C) 2004, 2006 Internet Systems Consortium, Inc. ("ISC")
3 * Copyright (C) 2000-2003 Internet Software Consortium.
5 * Permission to use, copy, modify, and distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
9 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
10 * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
11 * AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
12 * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
13 * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
14 * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
15 * PERFORMANCE OF THIS SOFTWARE.
18 /* $Id: lwresd.c,v 1.37.2.2.2.8 2006/02/28 06:32:53 marka Exp $ */
21 * Main program for the Lightweight Resolver Daemon.
23 * To paraphrase the old saying about X11, "It's not a lightweight deamon
24 * for resolvers, it's a deamon for lightweight resolvers".
33 #include <isc/magic.h>
36 #include <isc/print.h>
37 #include <isc/socket.h>
41 #include <isccfg/namedconf.h>
44 #include <dns/result.h>
47 #include <named/config.h>
48 #include <named/globals.h>
49 #include <named/log.h>
50 #include <named/lwaddr.h>
51 #include <named/lwresd.h>
52 #include <named/lwdclient.h>
53 #include <named/lwsearch.h>
54 #include <named/server.h>
56 #define LWRESD_MAGIC ISC_MAGIC('L', 'W', 'R', 'D')
57 #define VALID_LWRESD(l) ISC_MAGIC_VALID(l, LWRESD_MAGIC)
59 #define LWRESLISTENER_MAGIC ISC_MAGIC('L', 'W', 'R', 'L')
60 #define VALID_LWRESLISTENER(l) ISC_MAGIC_VALID(l, LWRESLISTENER_MAGIC)
63 * The total number of clients we can handle will be NTASKS * NRECVS.
65 #define NTASKS 2 /* tasks to create to handle lwres queries */
66 #define NRECVS 2 /* max clients per task */
68 typedef ISC_LIST(ns_lwreslistener_t) ns_lwreslistenerlist_t;
70 static ns_lwreslistenerlist_t listeners;
71 static isc_mutex_t listeners_lock;
72 static isc_once_t once = ISC_ONCE_INIT;
76 initialize_mutex(void) {
77 RUNTIME_CHECK(isc_mutex_init(&listeners_lock) == ISC_R_SUCCESS);
82 * Wrappers around our memory management stuff, for the lwres functions.
85 ns__lwresd_memalloc(void *arg, size_t size) {
86 return (isc_mem_get(arg, size));
90 ns__lwresd_memfree(void *arg, void *mem, size_t size) {
91 isc_mem_put(arg, mem, size);
97 if (result != ISC_R_SUCCESS) goto cleanup; \
101 buffer_putstr(isc_buffer_t *b, const char *s) {
102 unsigned int len = strlen(s);
103 if (isc_buffer_availablelength(b) <= len)
104 return (ISC_R_NOSPACE);
105 isc_buffer_putmem(b, (const unsigned char *)s, len);
106 return (ISC_R_SUCCESS);
110 * Convert a resolv.conf file into a config structure.
113 ns_lwresd_parseeresolvconf(isc_mem_t *mctx, cfg_parser_t *pctx,
119 lwres_context_t *lwctx = NULL;
120 lwres_conf_t *lwc = NULL;
125 lwres_result_t lwresult;
128 lwresult = lwres_context_create(&lwctx, mctx, ns__lwresd_memalloc,
130 LWRES_CONTEXT_SERVERMODE);
131 if (lwresult != LWRES_R_SUCCESS) {
132 result = ISC_R_NOMEMORY;
136 lwresult = lwres_conf_parse(lwctx, lwresd_g_resolvconffile);
137 if (lwresult != LWRES_R_SUCCESS) {
138 result = DNS_R_SYNTAX;
142 lwc = lwres_conf_get(lwctx);
145 isc_buffer_init(&b, text, sizeof(text));
147 CHECK(buffer_putstr(&b, "options {\n"));
150 * Build the list of forwarders.
152 if (lwc->nsnext > 0) {
153 CHECK(buffer_putstr(&b, "\tforwarders {\n"));
155 for (i = 0; i < lwc->nsnext; i++) {
156 CHECK(lwaddr_sockaddr_fromlwresaddr(
158 &lwc->nameservers[i],
160 isc_netaddr_fromsockaddr(&na, &sa);
161 CHECK(buffer_putstr(&b, "\t\t"));
162 CHECK(isc_netaddr_totext(&na, &b));
163 CHECK(buffer_putstr(&b, ";\n"));
165 CHECK(buffer_putstr(&b, "\t};\n"));
171 if (lwc->sortlistnxt > 0) {
172 CHECK(buffer_putstr(&b, "\tsortlist {\n"));
173 CHECK(buffer_putstr(&b, "\t\t{\n"));
174 CHECK(buffer_putstr(&b, "\t\t\tany;\n"));
175 CHECK(buffer_putstr(&b, "\t\t\t{\n"));
176 for (i = 0; i < lwc->sortlistnxt; i++) {
177 lwres_addr_t *lwaddr = &lwc->sortlist[i].addr;
178 lwres_addr_t *lwmask = &lwc->sortlist[i].mask;
181 CHECK(lwaddr_sockaddr_fromlwresaddr(&sa, lwmask, 0));
182 isc_netaddr_fromsockaddr(&na, &sa);
183 result = isc_netaddr_masktoprefixlen(&na, &mask);
184 if (result != ISC_R_SUCCESS) {
185 char addrtext[ISC_NETADDR_FORMATSIZE];
186 isc_netaddr_format(&na, addrtext,
188 isc_log_write(ns_g_lctx,
189 NS_LOGCATEGORY_GENERAL,
192 "processing sortlist: '%s' is "
193 "not a valid netmask",
198 CHECK(lwaddr_sockaddr_fromlwresaddr(&sa, lwaddr, 0));
199 isc_netaddr_fromsockaddr(&na, &sa);
201 CHECK(buffer_putstr(&b, "\t\t\t\t"));
202 CHECK(isc_netaddr_totext(&na, &b));
203 snprintf(str, sizeof(str), "%u", mask);
204 CHECK(buffer_putstr(&b, "/"));
205 CHECK(buffer_putstr(&b, str));
206 CHECK(buffer_putstr(&b, ";\n"));
208 CHECK(buffer_putstr(&b, "\t\t\t};\n"));
209 CHECK(buffer_putstr(&b, "\t\t};\n"));
210 CHECK(buffer_putstr(&b, "\t};\n"));
213 CHECK(buffer_putstr(&b, "};\n\n"));
215 CHECK(buffer_putstr(&b, "lwres {\n"));
218 * Build the search path
220 if (lwc->searchnxt > 0) {
221 if (lwc->searchnxt > 0) {
222 CHECK(buffer_putstr(&b, "\tsearch {\n"));
223 for (i = 0; i < lwc->searchnxt; i++) {
224 CHECK(buffer_putstr(&b, "\t\t\""));
225 CHECK(buffer_putstr(&b, lwc->search[i]));
226 CHECK(buffer_putstr(&b, "\";\n"));
228 CHECK(buffer_putstr(&b, "\t};\n"));
233 * Build the ndots line
235 if (lwc->ndots != 1) {
236 CHECK(buffer_putstr(&b, "\tndots "));
237 snprintf(str, sizeof(str), "%u", lwc->ndots);
238 CHECK(buffer_putstr(&b, str));
239 CHECK(buffer_putstr(&b, ";\n"));
243 * Build the listen-on line
245 if (lwc->lwnext > 0) {
246 CHECK(buffer_putstr(&b, "\tlisten-on {\n"));
248 for (i = 0; i < lwc->lwnext; i++) {
249 CHECK(lwaddr_sockaddr_fromlwresaddr(&sa,
252 isc_netaddr_fromsockaddr(&na, &sa);
253 CHECK(buffer_putstr(&b, "\t\t"));
254 CHECK(isc_netaddr_totext(&na, &b));
255 CHECK(buffer_putstr(&b, ";\n"));
257 CHECK(buffer_putstr(&b, "\t};\n"));
260 CHECK(buffer_putstr(&b, "};\n"));
264 (int)isc_buffer_usedlength(&b),
265 (char *)isc_buffer_base(&b));
268 lwres_conf_clear(lwctx);
269 lwres_context_destroy(&lwctx);
271 return (cfg_parse_buffer(pctx, &b, &cfg_type_namedconf, configp));
276 lwres_conf_clear(lwctx);
277 lwres_context_destroy(&lwctx);
285 * Handle lwresd manager objects
288 ns_lwdmanager_create(isc_mem_t *mctx, const cfg_obj_t *lwres,
289 ns_lwresd_t **lwresdp)
293 dns_rdataclass_t vclass;
294 const cfg_obj_t *obj, *viewobj, *searchobj;
295 const cfg_listelt_t *element;
298 INSIST(lwresdp != NULL && *lwresdp == NULL);
300 lwresd = isc_mem_get(mctx, sizeof(ns_lwresd_t));
302 return (ISC_R_NOMEMORY);
305 isc_mem_attach(mctx, &lwresd->mctx);
307 lwresd->search = NULL;
311 (void)cfg_map_get(lwres, "ndots", &obj);
313 lwresd->ndots = cfg_obj_asuint32(obj);
317 RUNTIME_CHECK(isc_mutex_init(&lwresd->lock) == ISC_R_SUCCESS);
319 lwresd->shutting_down = ISC_FALSE;
322 (void)cfg_map_get(lwres, "view", &viewobj);
323 if (viewobj != NULL) {
324 vname = cfg_obj_asstring(cfg_tuple_get(viewobj, "name"));
325 obj = cfg_tuple_get(viewobj, "class");
326 result = ns_config_getclass(obj, dns_rdataclass_in, &vclass);
327 if (result != ISC_R_SUCCESS)
331 vclass = dns_rdataclass_in;
334 result = dns_viewlist_find(&ns_g_server->viewlist, vname, vclass,
336 if (result != ISC_R_SUCCESS) {
337 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
338 NS_LOGMODULE_LWRESD, ISC_LOG_WARNING,
339 "couldn't find view %s", vname);
344 (void)cfg_map_get(lwres, "search", &searchobj);
345 if (searchobj != NULL) {
346 lwresd->search = NULL;
347 result = ns_lwsearchlist_create(lwresd->mctx,
349 if (result != ISC_R_SUCCESS) {
350 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
351 NS_LOGMODULE_LWRESD, ISC_LOG_WARNING,
352 "couldn't create searchlist");
355 for (element = cfg_list_first(searchobj);
357 element = cfg_list_next(element))
359 const cfg_obj_t *search;
360 const char *searchstr;
361 isc_buffer_t namebuf;
362 dns_fixedname_t fname;
365 search = cfg_listelt_value(element);
366 searchstr = cfg_obj_asstring(search);
368 dns_fixedname_init(&fname);
369 name = dns_fixedname_name(&fname);
370 isc_buffer_init(&namebuf, searchstr,
372 isc_buffer_add(&namebuf, strlen(searchstr));
373 result = dns_name_fromtext(name, &namebuf,
374 dns_rootname, ISC_FALSE,
376 if (result != ISC_R_SUCCESS) {
377 isc_log_write(ns_g_lctx,
378 NS_LOGCATEGORY_GENERAL,
381 "invalid name %s in searchlist",
386 result = ns_lwsearchlist_append(lwresd->search, name);
387 if (result != ISC_R_SUCCESS) {
388 isc_log_write(ns_g_lctx,
389 NS_LOGCATEGORY_GENERAL,
392 "couldn't update searchlist");
398 lwresd->magic = LWRESD_MAGIC;
401 return (ISC_R_SUCCESS);
404 if (lwresd->view != NULL)
405 dns_view_detach(&lwresd->view);
406 if (lwresd->search != NULL)
407 ns_lwsearchlist_detach(&lwresd->search);
408 if (lwresd->mctx != NULL)
409 isc_mem_detach(&lwresd->mctx);
410 isc_mem_put(mctx, lwresd, sizeof(ns_lwresd_t));
415 ns_lwdmanager_attach(ns_lwresd_t *source, ns_lwresd_t **targetp) {
416 INSIST(VALID_LWRESD(source));
417 INSIST(targetp != NULL && *targetp == NULL);
421 UNLOCK(&source->lock);
427 ns_lwdmanager_detach(ns_lwresd_t **lwresdp) {
430 isc_boolean_t done = ISC_FALSE;
432 INSIST(lwresdp != NULL && *lwresdp != NULL);
433 INSIST(VALID_LWRESD(*lwresdp));
439 INSIST(lwresd->refs > 0);
441 if (lwresd->refs == 0)
443 UNLOCK(&lwresd->lock);
448 dns_view_detach(&lwresd->view);
449 if (lwresd->search != NULL)
450 ns_lwsearchlist_detach(&lwresd->search);
453 isc_mem_put(mctx, lwresd, sizeof(*lwresd));
454 isc_mem_detach(&mctx);
459 * Handle listener objects
462 ns_lwreslistener_attach(ns_lwreslistener_t *source,
463 ns_lwreslistener_t **targetp)
465 INSIST(VALID_LWRESLISTENER(source));
466 INSIST(targetp != NULL && *targetp == NULL);
470 UNLOCK(&source->lock);
476 ns_lwreslistener_detach(ns_lwreslistener_t **listenerp) {
477 ns_lwreslistener_t *listener;
479 isc_boolean_t done = ISC_FALSE;
481 INSIST(listenerp != NULL && *listenerp != NULL);
482 INSIST(VALID_LWRESLISTENER(*listenerp));
484 listener = *listenerp;
486 LOCK(&listener->lock);
487 INSIST(listener->refs > 0);
489 if (listener->refs == 0)
491 UNLOCK(&listener->lock);
496 if (listener->manager != NULL)
497 ns_lwdmanager_detach(&listener->manager);
499 if (listener->sock != NULL)
500 isc_socket_detach(&listener->sock);
503 mctx = listener->mctx;
504 isc_mem_put(mctx, listener, sizeof(*listener));
505 isc_mem_detach(&mctx);
510 listener_create(isc_mem_t *mctx, ns_lwresd_t *lwresd,
511 ns_lwreslistener_t **listenerp)
513 ns_lwreslistener_t *listener;
515 REQUIRE(listenerp != NULL && *listenerp == NULL);
517 listener = isc_mem_get(mctx, sizeof(ns_lwreslistener_t));
518 if (listener == NULL)
519 return (ISC_R_NOMEMORY);
520 RUNTIME_CHECK(isc_mutex_init(&listener->lock) == ISC_R_SUCCESS);
522 listener->magic = LWRESLISTENER_MAGIC;
525 listener->sock = NULL;
527 listener->manager = NULL;
528 ns_lwdmanager_attach(lwresd, &listener->manager);
530 listener->mctx = NULL;
531 isc_mem_attach(mctx, &listener->mctx);
533 ISC_LINK_INIT(listener, link);
534 ISC_LIST_INIT(listener->cmgrs);
536 *listenerp = listener;
537 return (ISC_R_SUCCESS);
541 listener_bind(ns_lwreslistener_t *listener, isc_sockaddr_t *address) {
542 isc_socket_t *sock = NULL;
543 isc_result_t result = ISC_R_SUCCESS;
546 pf = isc_sockaddr_pf(address);
547 if ((pf == AF_INET && isc_net_probeipv4() != ISC_R_SUCCESS) ||
548 (pf == AF_INET6 && isc_net_probeipv6() != ISC_R_SUCCESS))
549 return (ISC_R_FAMILYNOSUPPORT);
551 listener->address = *address;
553 if (isc_sockaddr_getport(&listener->address) == 0) {
555 port = lwresd_g_listenport;
557 port = LWRES_UDP_PORT;
558 isc_sockaddr_setport(&listener->address, port);
562 result = isc_socket_create(ns_g_socketmgr, pf,
563 isc_sockettype_udp, &sock);
564 if (result != ISC_R_SUCCESS) {
565 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
566 NS_LOGMODULE_LWRESD, ISC_LOG_WARNING,
567 "failed to create lwres socket: %s",
568 isc_result_totext(result));
572 result = isc_socket_bind(sock, &listener->address);
573 if (result != ISC_R_SUCCESS) {
574 char socktext[ISC_SOCKADDR_FORMATSIZE];
575 isc_sockaddr_format(&listener->address, socktext,
577 isc_socket_detach(&sock);
578 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
579 NS_LOGMODULE_LWRESD, ISC_LOG_WARNING,
580 "failed to add lwres socket: %s: %s",
581 socktext, isc_result_totext(result));
584 listener->sock = sock;
585 return (ISC_R_SUCCESS);
589 listener_copysock(ns_lwreslistener_t *oldlistener,
590 ns_lwreslistener_t *newlistener)
592 newlistener->address = oldlistener->address;
593 isc_socket_attach(oldlistener->sock, &newlistener->sock);
597 listener_startclients(ns_lwreslistener_t *listener) {
598 ns_lwdclientmgr_t *cm;
603 * Create the client managers.
605 result = ISC_R_SUCCESS;
606 for (i = 0; i < NTASKS && result == ISC_R_SUCCESS; i++)
607 result = ns_lwdclientmgr_create(listener, NRECVS,
611 * Ensure that we have created at least one.
613 if (ISC_LIST_EMPTY(listener->cmgrs))
617 * Walk the list of clients and start each one up.
619 LOCK(&listener->lock);
620 cm = ISC_LIST_HEAD(listener->cmgrs);
622 result = ns_lwdclient_startrecv(cm);
623 if (result != ISC_R_SUCCESS)
624 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
625 NS_LOGMODULE_LWRESD, ISC_LOG_ERROR,
626 "could not start lwres "
627 "client handler: %s",
628 isc_result_totext(result));
629 cm = ISC_LIST_NEXT(cm, link);
631 UNLOCK(&listener->lock);
633 return (ISC_R_SUCCESS);
637 listener_shutdown(ns_lwreslistener_t *listener) {
638 ns_lwdclientmgr_t *cm;
640 cm = ISC_LIST_HEAD(listener->cmgrs);
642 isc_task_shutdown(cm->task);
643 cm = ISC_LIST_NEXT(cm, link);
648 find_listener(isc_sockaddr_t *address, ns_lwreslistener_t **listenerp) {
649 ns_lwreslistener_t *listener;
651 INSIST(listenerp != NULL && *listenerp == NULL);
653 for (listener = ISC_LIST_HEAD(listeners);
655 listener = ISC_LIST_NEXT(listener, link))
657 if (!isc_sockaddr_equal(address, &listener->address))
659 *listenerp = listener;
660 return (ISC_R_SUCCESS);
662 return (ISC_R_NOTFOUND);
666 ns_lwreslistener_unlinkcm(ns_lwreslistener_t *listener, ns_lwdclientmgr_t *cm)
668 REQUIRE(VALID_LWRESLISTENER(listener));
670 LOCK(&listener->lock);
671 ISC_LIST_UNLINK(listener->cmgrs, cm, link);
672 UNLOCK(&listener->lock);
676 ns_lwreslistener_linkcm(ns_lwreslistener_t *listener, ns_lwdclientmgr_t *cm) {
677 REQUIRE(VALID_LWRESLISTENER(listener));
680 * This does no locking, since it's called early enough that locking
683 ISC_LIST_APPEND(listener->cmgrs, cm, link);
687 configure_listener(isc_sockaddr_t *address, ns_lwresd_t *lwresd,
688 isc_mem_t *mctx, ns_lwreslistenerlist_t *newlisteners)
690 ns_lwreslistener_t *listener, *oldlistener = NULL;
691 char socktext[ISC_SOCKADDR_FORMATSIZE];
694 (void)find_listener(address, &oldlistener);
696 result = listener_create(mctx, lwresd, &listener);
697 if (result != ISC_R_SUCCESS) {
698 isc_sockaddr_format(address, socktext, sizeof(socktext));
699 isc_log_write(ns_g_lctx, ISC_LOGCATEGORY_GENERAL,
700 NS_LOGMODULE_LWRESD, ISC_LOG_WARNING,
701 "lwres failed to configure %s: %s",
702 socktext, isc_result_totext(result));
707 * If there's already a listener, don't rebind the socket.
709 if (oldlistener == NULL) {
710 result = listener_bind(listener, address);
711 if (result != ISC_R_SUCCESS) {
712 ns_lwreslistener_detach(&listener);
713 return (ISC_R_SUCCESS);
716 listener_copysock(oldlistener, listener);
718 result = listener_startclients(listener);
719 if (result != ISC_R_SUCCESS) {
720 isc_sockaddr_format(address, socktext, sizeof(socktext));
721 isc_log_write(ns_g_lctx, ISC_LOGCATEGORY_GENERAL,
722 NS_LOGMODULE_LWRESD, ISC_LOG_WARNING,
723 "lwres: failed to start %s: %s", socktext,
724 isc_result_totext(result));
725 ns_lwreslistener_detach(&listener);
726 return (ISC_R_SUCCESS);
729 if (oldlistener != NULL) {
731 * Remove the old listener from the old list and shut it down.
733 ISC_LIST_UNLINK(listeners, oldlistener, link);
734 listener_shutdown(oldlistener);
735 ns_lwreslistener_detach(&oldlistener);
737 isc_sockaddr_format(address, socktext, sizeof(socktext));
738 isc_log_write(ns_g_lctx, ISC_LOGCATEGORY_GENERAL,
739 NS_LOGMODULE_LWRESD, ISC_LOG_NOTICE,
740 "lwres listening on %s", socktext);
743 ISC_LIST_APPEND(*newlisteners, listener, link);
748 ns_lwresd_configure(isc_mem_t *mctx, const cfg_obj_t *config) {
749 const cfg_obj_t *lwreslist = NULL;
750 const cfg_obj_t *lwres = NULL;
751 const cfg_obj_t *listenerslist = NULL;
752 const cfg_listelt_t *element = NULL;
753 ns_lwreslistener_t *listener;
754 ns_lwreslistenerlist_t newlisteners;
756 char socktext[ISC_SOCKADDR_FORMATSIZE];
757 isc_sockaddr_t *addrs = NULL;
758 ns_lwresd_t *lwresd = NULL;
759 isc_uint32_t count = 0;
761 REQUIRE(mctx != NULL);
762 REQUIRE(config != NULL);
764 RUNTIME_CHECK(isc_once_do(&once, initialize_mutex) == ISC_R_SUCCESS);
766 ISC_LIST_INIT(newlisteners);
768 result = cfg_map_get(config, "lwres", &lwreslist);
769 if (result != ISC_R_SUCCESS)
770 return (ISC_R_SUCCESS);
772 LOCK(&listeners_lock);
774 * Run through the new lwres address list, noting sockets that
775 * are already being listened on and moving them to the new list.
777 * Identifying duplicates addr/port combinations is left to either
778 * the underlying config code, or to the bind attempt getting an
779 * address-in-use error.
781 for (element = cfg_list_first(lwreslist);
783 element = cfg_list_next(element))
787 lwres = cfg_listelt_value(element);
788 CHECK(ns_lwdmanager_create(mctx, lwres, &lwresd));
790 port = lwresd_g_listenport;
792 port = LWRES_UDP_PORT;
794 listenerslist = NULL;
795 (void)cfg_map_get(lwres, "listen-on", &listenerslist);
796 if (listenerslist == NULL) {
797 struct in_addr localhost;
798 isc_sockaddr_t address;
800 localhost.s_addr = htonl(INADDR_LOOPBACK);
801 isc_sockaddr_fromin(&address, &localhost, port);
802 CHECK(configure_listener(&address, lwresd, mctx,
807 CHECK(ns_config_getiplist(config, listenerslist,
808 port, mctx, &addrs, &count));
809 for (i = 0; i < count; i++)
810 CHECK(configure_listener(&addrs[i], lwresd,
811 mctx, &newlisteners));
812 ns_config_putiplist(mctx, &addrs, count);
814 ns_lwdmanager_detach(&lwresd);
818 * Shutdown everything on the listeners list, and remove them from
819 * the list. Then put all of the new listeners on it.
822 while (!ISC_LIST_EMPTY(listeners)) {
823 listener = ISC_LIST_HEAD(listeners);
824 ISC_LIST_UNLINK(listeners, listener, link);
826 isc_sockaddr_format(&listener->address,
827 socktext, sizeof(socktext));
829 listener_shutdown(listener);
830 ns_lwreslistener_detach(&listener);
832 isc_log_write(ns_g_lctx, ISC_LOGCATEGORY_GENERAL,
833 NS_LOGMODULE_LWRESD, ISC_LOG_NOTICE,
834 "lwres no longer listening on %s", socktext);
838 ISC_LIST_APPENDLIST(listeners, newlisteners, link);
841 ns_config_putiplist(mctx, &addrs, count);
844 ns_lwdmanager_detach(&lwresd);
846 UNLOCK(&listeners_lock);
852 ns_lwresd_shutdown(void) {
853 ns_lwreslistener_t *listener;
855 RUNTIME_CHECK(isc_once_do(&once, initialize_mutex) == ISC_R_SUCCESS);
857 while (!ISC_LIST_EMPTY(listeners)) {
858 listener = ISC_LIST_HEAD(listeners);
859 ISC_LIST_UNLINK(listeners, listener, link);
860 ns_lwreslistener_detach(&listener);