2 Unix SMB/CIFS implementation.
4 Winbind daemon for ntdom nss module
6 Copyright (C) by Tim Potter 2000-2002
7 Copyright (C) Andrew Tridgell 2002
8 Copyright (C) Jelmer Vernooij 2003
9 Copyright (C) Volker Lendecke 2004
11 This program is free software; you can redistribute it and/or modify
12 it under the terms of the GNU General Public License as published by
13 the Free Software Foundation; either version 2 of the License, or
14 (at your option) any later version.
16 This program is distributed in the hope that it will be useful,
17 but WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 GNU General Public License for more details.
21 You should have received a copy of the GNU General Public License
22 along with this program; if not, write to the Free Software
23 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
29 BOOL opt_nocache = False;
30 static BOOL interactive = False;
32 extern BOOL override_logfile;
34 /* Reload configuration */
36 static BOOL reload_services_file(void)
43 pstrcpy(fname,lp_configfile());
44 if (file_exist(fname,NULL) && !strcsequal(fname,dyn_CONFIGFILE)) {
45 pstrcpy(dyn_CONFIGFILE,fname);
50 ret = lp_load(dyn_CONFIGFILE,False,False,True,True);
61 /**************************************************************************** **
62 Prepare to dump a core file - carefully!
63 **************************************************************************** */
65 static BOOL dump_core(void)
69 pstrcpy( dname, lp_logfile() );
70 if ((p=strrchr(dname,'/')))
72 pstrcat( dname, "/corefiles" );
74 sys_chown( dname, getuid(), getgid() );
84 getrlimit( RLIMIT_CORE, &rlp );
85 rlp.rlim_cur = MAX( 4*1024*1024, rlp.rlim_cur );
86 setrlimit( RLIMIT_CORE, &rlp );
87 getrlimit( RLIMIT_CORE, &rlp );
88 DEBUG( 3, ( "Core limits now %d %d\n", (int)rlp.rlim_cur, (int)rlp.rlim_max ) );
93 DEBUG(0,("Dumping core in %s\n",dname));
99 /**************************************************************************** **
101 **************************************************************************** */
103 static void fault_quit(void)
110 static void winbindd_status(void)
112 struct winbindd_cli_state *tmp;
114 DEBUG(0, ("winbindd status:\n"));
116 /* Print client state information */
118 DEBUG(0, ("\t%d clients currently active\n", winbindd_num_clients()));
120 if (DEBUGLEVEL >= 2 && winbindd_num_clients()) {
121 DEBUG(2, ("\tclient list:\n"));
122 for(tmp = winbindd_client_list(); tmp; tmp = tmp->next) {
123 DEBUGADD(2, ("\t\tpid %lu, sock %d\n",
124 (unsigned long)tmp->pid, tmp->sock));
129 /* Print winbindd status to log file */
131 static void print_winbindd_status(void)
136 /* Flush client cache */
138 static void flush_caches(void)
140 /* We need to invalidate cached user list entries on a SIGHUP
141 otherwise cached access denied errors due to restrict anonymous
142 hang around until the sequence number changes. */
144 wcache_invalidate_cache();
147 /* Handle the signal by unlinking socket and exiting */
149 static void terminate(void)
155 /* Remove socket file */
156 pstr_sprintf(path, "%s/%s",
157 WINBINDD_SOCKET_DIR, WINBINDD_SOCKET_NAME);
162 TALLOC_CTX *mem_ctx = talloc_init("end_description");
163 char *description = talloc_describe_all(mem_ctx);
165 DEBUG(3, ("tallocs left:\n%s\n", description));
166 talloc_destroy(mem_ctx);
173 static BOOL do_sigterm;
175 static void termination_handler(int signum)
178 sys_select_signal(signum);
181 static BOOL do_sigusr2;
183 static void sigusr2_handler(int signum)
186 sys_select_signal(SIGUSR2);
189 static BOOL do_sighup;
191 static void sighup_handler(int signum)
194 sys_select_signal(SIGHUP);
197 static BOOL do_sigchld;
199 static void sigchld_handler(int signum)
202 sys_select_signal(SIGCHLD);
205 /* React on 'smbcontrol winbindd reload-config' in the same way as on SIGHUP*/
206 static void msg_reload_services(int msg_type, struct process_id src, void *buf, size_t len)
208 /* Flush various caches */
210 reload_services_file();
213 /* React on 'smbcontrol winbindd shutdown' in the same way as on SIGTERM*/
214 static void msg_shutdown(int msg_type, struct process_id src, void *buf, size_t len)
219 static struct winbindd_dispatch_table {
220 enum winbindd_cmd cmd;
221 void (*fn)(struct winbindd_cli_state *state);
222 const char *winbindd_cmd_name;
223 } dispatch_table[] = {
227 { WINBINDD_GETPWNAM, winbindd_getpwnam, "GETPWNAM" },
228 { WINBINDD_GETPWUID, winbindd_getpwuid, "GETPWUID" },
230 { WINBINDD_SETPWENT, winbindd_setpwent, "SETPWENT" },
231 { WINBINDD_ENDPWENT, winbindd_endpwent, "ENDPWENT" },
232 { WINBINDD_GETPWENT, winbindd_getpwent, "GETPWENT" },
234 { WINBINDD_GETGROUPS, winbindd_getgroups, "GETGROUPS" },
235 { WINBINDD_GETUSERSIDS, winbindd_getusersids, "GETUSERSIDS" },
236 { WINBINDD_GETUSERDOMGROUPS, winbindd_getuserdomgroups,
237 "GETUSERDOMGROUPS" },
239 /* Group functions */
241 { WINBINDD_GETGRNAM, winbindd_getgrnam, "GETGRNAM" },
242 { WINBINDD_GETGRGID, winbindd_getgrgid, "GETGRGID" },
243 { WINBINDD_SETGRENT, winbindd_setgrent, "SETGRENT" },
244 { WINBINDD_ENDGRENT, winbindd_endgrent, "ENDGRENT" },
245 { WINBINDD_GETGRENT, winbindd_getgrent, "GETGRENT" },
246 { WINBINDD_GETGRLST, winbindd_getgrent, "GETGRLST" },
248 /* PAM auth functions */
250 { WINBINDD_PAM_AUTH, winbindd_pam_auth, "PAM_AUTH" },
251 { WINBINDD_PAM_AUTH_CRAP, winbindd_pam_auth_crap, "AUTH_CRAP" },
252 { WINBINDD_PAM_CHAUTHTOK, winbindd_pam_chauthtok, "CHAUTHTOK" },
253 { WINBINDD_PAM_LOGOFF, winbindd_pam_logoff, "PAM_LOGOFF" },
255 /* Enumeration functions */
257 { WINBINDD_LIST_USERS, winbindd_list_users, "LIST_USERS" },
258 { WINBINDD_LIST_GROUPS, winbindd_list_groups, "LIST_GROUPS" },
259 { WINBINDD_LIST_TRUSTDOM, winbindd_list_trusted_domains,
261 { WINBINDD_SHOW_SEQUENCE, winbindd_show_sequence, "SHOW_SEQUENCE" },
263 /* SID related functions */
265 { WINBINDD_LOOKUPSID, winbindd_lookupsid, "LOOKUPSID" },
266 { WINBINDD_LOOKUPNAME, winbindd_lookupname, "LOOKUPNAME" },
268 /* Lookup related functions */
270 { WINBINDD_SID_TO_UID, winbindd_sid_to_uid, "SID_TO_UID" },
271 { WINBINDD_SID_TO_GID, winbindd_sid_to_gid, "SID_TO_GID" },
272 { WINBINDD_UID_TO_SID, winbindd_uid_to_sid, "UID_TO_SID" },
273 { WINBINDD_GID_TO_SID, winbindd_gid_to_sid, "GID_TO_SID" },
274 { WINBINDD_ALLOCATE_UID, winbindd_allocate_uid, "ALLOCATE_UID" },
275 { WINBINDD_ALLOCATE_GID, winbindd_allocate_uid, "ALLOCATE_GID" },
279 { WINBINDD_CHECK_MACHACC, winbindd_check_machine_acct, "CHECK_MACHACC" },
280 { WINBINDD_PING, winbindd_ping, "PING" },
281 { WINBINDD_INFO, winbindd_info, "INFO" },
282 { WINBINDD_INTERFACE_VERSION, winbindd_interface_version,
283 "INTERFACE_VERSION" },
284 { WINBINDD_DOMAIN_NAME, winbindd_domain_name, "DOMAIN_NAME" },
285 { WINBINDD_DOMAIN_INFO, winbindd_domain_info, "DOMAIN_INFO" },
286 { WINBINDD_NETBIOS_NAME, winbindd_netbios_name, "NETBIOS_NAME" },
287 { WINBINDD_PRIV_PIPE_DIR, winbindd_priv_pipe_dir,
288 "WINBINDD_PRIV_PIPE_DIR" },
289 { WINBINDD_GETDCNAME, winbindd_getdcname, "GETDCNAME" },
293 { WINBINDD_WINS_BYNAME, winbindd_wins_byname, "WINS_BYNAME" },
294 { WINBINDD_WINS_BYIP, winbindd_wins_byip, "WINS_BYIP" },
298 { WINBINDD_NUM_CMDS, NULL, "NONE" }
301 static void process_request(struct winbindd_cli_state *state)
303 struct winbindd_dispatch_table *table = dispatch_table;
305 /* Free response data - we may be interrupted and receive another
306 command before being able to send this data off. */
308 SAFE_FREE(state->response.extra_data);
310 ZERO_STRUCT(state->response);
312 state->response.result = WINBINDD_PENDING;
313 state->response.length = sizeof(struct winbindd_response);
315 state->mem_ctx = talloc_init("winbind request");
316 if (state->mem_ctx == NULL)
319 /* Process command */
321 for (table = dispatch_table; table->fn; table++) {
322 if (state->request.cmd == table->cmd) {
323 DEBUG(10,("process_request: request fn %s\n",
324 table->winbindd_cmd_name ));
331 DEBUG(10,("process_request: unknown request fn number %d\n",
332 (int)state->request.cmd ));
333 request_error(state);
338 * A list of file descriptors being monitored by select in the main processing
339 * loop. fd_event->handler is called whenever the socket is readable/writable.
342 static struct fd_event *fd_events = NULL;
344 void add_fd_event(struct fd_event *ev)
346 struct fd_event *match;
348 /* only add unique fd_event structs */
350 for (match=fd_events; match; match=match->next ) {
352 SMB_ASSERT( match != ev );
359 DLIST_ADD(fd_events, ev);
362 void remove_fd_event(struct fd_event *ev)
364 DLIST_REMOVE(fd_events, ev);
368 * Handler for fd_events to complete a read/write request, set up by
369 * setup_async_read/setup_async_write.
372 static void rw_callback(struct fd_event *event, int flags)
377 todo = event->length - event->done;
379 if (event->flags & EVENT_FD_WRITE) {
380 SMB_ASSERT(flags == EVENT_FD_WRITE);
381 done = sys_write(event->fd,
382 &((char *)event->data)[event->done],
387 event->finished(event->private_data, False);
392 if (event->flags & EVENT_FD_READ) {
393 SMB_ASSERT(flags == EVENT_FD_READ);
394 done = sys_read(event->fd, &((char *)event->data)[event->done],
399 event->finished(event->private_data, False);
406 if (event->done == event->length) {
408 event->finished(event->private_data, True);
413 * Request an async read/write on a fd_event structure. (*finished) is called
414 * when the request is completed or an error had occurred.
417 void setup_async_read(struct fd_event *event, void *data, size_t length,
418 void (*finished)(void *private_data, BOOL success),
421 SMB_ASSERT(event->flags == 0);
423 event->length = length;
425 event->handler = rw_callback;
426 event->finished = finished;
427 event->private_data = private_data;
428 event->flags = EVENT_FD_READ;
431 void setup_async_write(struct fd_event *event, void *data, size_t length,
432 void (*finished)(void *private_data, BOOL success),
435 SMB_ASSERT(event->flags == 0);
437 event->length = length;
439 event->handler = rw_callback;
440 event->finished = finished;
441 event->private_data = private_data;
442 event->flags = EVENT_FD_WRITE;
446 * This is the main event loop of winbind requests. It goes through a
447 * state-machine of 3 read/write requests, 4 if you have extra data to send.
449 * An idle winbind client has a read request of 4 bytes outstanding,
450 * finalizing function is request_len_recv, checking the length. request_recv
451 * then processes the packet. The processing function then at some point has
452 * to call request_finished which schedules sending the response.
455 static void request_len_recv(void *private_data, BOOL success);
456 static void request_recv(void *private_data, BOOL success);
457 static void request_main_recv(void *private_data, BOOL success);
458 static void request_finished(struct winbindd_cli_state *state);
459 void request_finished_cont(void *private_data, BOOL success);
460 static void response_main_sent(void *private_data, BOOL success);
461 static void response_extra_sent(void *private_data, BOOL success);
463 static void response_extra_sent(void *private_data, BOOL success)
465 struct winbindd_cli_state *state =
466 talloc_get_type_abort(private_data, struct winbindd_cli_state);
468 if (state->mem_ctx != NULL) {
469 talloc_destroy(state->mem_ctx);
470 state->mem_ctx = NULL;
474 state->finished = True;
478 SAFE_FREE(state->request.extra_data);
479 SAFE_FREE(state->response.extra_data);
481 setup_async_read(&state->fd_event, &state->request, sizeof(uint32),
482 request_len_recv, state);
485 static void response_main_sent(void *private_data, BOOL success)
487 struct winbindd_cli_state *state =
488 talloc_get_type_abort(private_data, struct winbindd_cli_state);
491 state->finished = True;
495 if (state->response.length == sizeof(state->response)) {
496 if (state->mem_ctx != NULL) {
497 talloc_destroy(state->mem_ctx);
498 state->mem_ctx = NULL;
501 setup_async_read(&state->fd_event, &state->request,
502 sizeof(uint32), request_len_recv, state);
506 setup_async_write(&state->fd_event, state->response.extra_data,
507 state->response.length - sizeof(state->response),
508 response_extra_sent, state);
511 static void request_finished(struct winbindd_cli_state *state)
513 setup_async_write(&state->fd_event, &state->response,
514 sizeof(state->response), response_main_sent, state);
517 void request_error(struct winbindd_cli_state *state)
519 SMB_ASSERT(state->response.result == WINBINDD_PENDING);
520 state->response.result = WINBINDD_ERROR;
521 request_finished(state);
524 void request_ok(struct winbindd_cli_state *state)
526 SMB_ASSERT(state->response.result == WINBINDD_PENDING);
527 state->response.result = WINBINDD_OK;
528 request_finished(state);
531 void request_finished_cont(void *private_data, BOOL success)
533 struct winbindd_cli_state *state =
534 talloc_get_type_abort(private_data, struct winbindd_cli_state);
539 request_error(state);
542 static void request_len_recv(void *private_data, BOOL success)
544 struct winbindd_cli_state *state =
545 talloc_get_type_abort(private_data, struct winbindd_cli_state);
548 state->finished = True;
552 if (*(uint32 *)(&state->request) != sizeof(state->request)) {
553 DEBUG(0,("request_len_recv: Invalid request size received: %d\n",
554 *(uint32 *)(&state->request)));
555 state->finished = True;
559 setup_async_read(&state->fd_event, (uint32 *)(&state->request)+1,
560 sizeof(state->request) - sizeof(uint32),
561 request_main_recv, state);
564 static void request_main_recv(void *private_data, BOOL success)
566 struct winbindd_cli_state *state =
567 talloc_get_type_abort(private_data, struct winbindd_cli_state);
570 state->finished = True;
574 if (state->request.extra_len == 0) {
575 state->request.extra_data = NULL;
576 request_recv(state, True);
580 if ((!state->privileged) &&
581 (state->request.extra_len > WINBINDD_MAX_EXTRA_DATA)) {
582 DEBUG(3, ("Got request with %d bytes extra data on "
583 "unprivileged socket\n", (int)state->request.extra_len));
584 state->request.extra_data = NULL;
585 state->finished = True;
589 state->request.extra_data =
590 SMB_MALLOC_ARRAY(char, state->request.extra_len + 1);
592 if (state->request.extra_data == NULL) {
593 DEBUG(0, ("malloc failed\n"));
594 state->finished = True;
598 /* Ensure null termination */
599 state->request.extra_data[state->request.extra_len] = '\0';
601 setup_async_read(&state->fd_event, state->request.extra_data,
602 state->request.extra_len, request_recv, state);
605 static void request_recv(void *private_data, BOOL success)
607 struct winbindd_cli_state *state =
608 talloc_get_type_abort(private_data, struct winbindd_cli_state);
611 state->finished = True;
615 process_request(state);
618 /* Process a new connection by adding it to the client connection list */
620 static void new_connection(int listen_sock, BOOL privileged)
622 struct sockaddr_un sunaddr;
623 struct winbindd_cli_state *state;
627 /* Accept connection */
629 len = sizeof(sunaddr);
632 sock = accept(listen_sock, (struct sockaddr *)&sunaddr, &len);
633 } while (sock == -1 && errno == EINTR);
638 DEBUG(6,("accepted socket %d\n", sock));
640 /* Create new connection structure */
642 if ((state = TALLOC_ZERO_P(NULL, struct winbindd_cli_state)) == NULL)
647 state->last_access = time(NULL);
649 state->privileged = privileged;
651 state->fd_event.fd = state->sock;
652 state->fd_event.flags = 0;
653 add_fd_event(&state->fd_event);
655 setup_async_read(&state->fd_event, &state->request, sizeof(uint32),
656 request_len_recv, state);
658 /* Add to connection list */
660 winbindd_add_client(state);
663 /* Remove a client connection from client connection list */
665 static void remove_client(struct winbindd_cli_state *state)
667 /* It's a dead client - hold a funeral */
675 /* Free any getent state */
677 free_getent_state(state->getpwent_state);
678 free_getent_state(state->getgrent_state);
680 /* We may have some extra data that was not freed if the
681 client was killed unexpectedly */
683 SAFE_FREE(state->response.extra_data);
685 if (state->mem_ctx != NULL) {
686 talloc_destroy(state->mem_ctx);
687 state->mem_ctx = NULL;
690 remove_fd_event(&state->fd_event);
692 /* Remove from list and free */
694 winbindd_remove_client(state);
700 /* Shutdown client connection which has been idle for the longest time */
702 static BOOL remove_idle_client(void)
704 struct winbindd_cli_state *state, *remove_state = NULL;
705 time_t last_access = 0;
708 for (state = winbindd_client_list(); state; state = state->next) {
709 if (state->response.result != WINBINDD_PENDING &&
710 !state->getpwent_state && !state->getgrent_state) {
712 if (!last_access || state->last_access < last_access) {
713 last_access = state->last_access;
714 remove_state = state;
720 DEBUG(5,("Found %d idle client connections, shutting down sock %d, pid %u\n",
721 nidle, remove_state->sock, (unsigned int)remove_state->pid));
722 remove_client(remove_state);
729 /* Process incoming clients on listen_sock. We use a tricky non-blocking,
730 non-forking, non-threaded model which allows us to handle many
731 simultaneous connections while remaining impervious to many denial of
734 static void process_loop(void)
736 struct winbindd_cli_state *state;
739 int maxfd, listen_sock, listen_priv_sock, selret;
740 struct timeval timeout;
742 /* We'll be doing this a lot */
744 /* Handle messages */
748 /* refresh the trusted domain cache */
750 rescan_trusted_domains();
752 /* Free up temporary memory */
755 main_loop_talloc_free();
757 /* Initialise fd lists for select() */
759 listen_sock = open_winbindd_socket();
760 listen_priv_sock = open_winbindd_priv_socket();
762 if (listen_sock == -1 || listen_priv_sock == -1) {
763 perror("open_winbind_socket");
767 maxfd = MAX(listen_sock, listen_priv_sock);
771 FD_SET(listen_sock, &r_fds);
772 FD_SET(listen_priv_sock, &r_fds);
774 timeout.tv_sec = WINBINDD_ESTABLISH_LOOP;
777 /* Set up client readers and writers */
779 state = winbindd_client_list();
783 struct winbindd_cli_state *next = state->next;
785 /* Dispose of client connection if it is marked as
789 remove_client(state);
794 for (ev = fd_events; ev; ev = ev->next) {
795 if (ev->flags & EVENT_FD_READ) {
796 FD_SET(ev->fd, &r_fds);
797 maxfd = MAX(ev->fd, maxfd);
799 if (ev->flags & EVENT_FD_WRITE) {
800 FD_SET(ev->fd, &w_fds);
801 maxfd = MAX(ev->fd, maxfd);
807 selret = sys_select(maxfd + 1, &r_fds, &w_fds, NULL, &timeout);
812 if ((selret == -1 && errno != EINTR) || selret == 0) {
814 /* Select error, something is badly wrong */
822 struct fd_event *next = ev->next;
824 if (FD_ISSET(ev->fd, &r_fds))
825 flags |= EVENT_FD_READ;
826 if (FD_ISSET(ev->fd, &w_fds))
827 flags |= EVENT_FD_WRITE;
829 ev->handler(ev, flags);
833 if (FD_ISSET(listen_sock, &r_fds)) {
834 while (winbindd_num_clients() >
835 WINBINDD_MAX_SIMULTANEOUS_CLIENTS - 1) {
836 DEBUG(5,("winbindd: Exceeding %d client "
837 "connections, removing idle "
839 WINBINDD_MAX_SIMULTANEOUS_CLIENTS));
840 if (!remove_idle_client()) {
841 DEBUG(0,("winbindd: Exceeding %d "
842 "client connections, no idle "
843 "connection found\n",
844 WINBINDD_MAX_SIMULTANEOUS_CLIENTS));
848 /* new, non-privileged connection */
849 new_connection(listen_sock, False);
852 if (FD_ISSET(listen_priv_sock, &r_fds)) {
853 while (winbindd_num_clients() >
854 WINBINDD_MAX_SIMULTANEOUS_CLIENTS - 1) {
855 DEBUG(5,("winbindd: Exceeding %d client "
856 "connections, removing idle "
858 WINBINDD_MAX_SIMULTANEOUS_CLIENTS));
859 if (!remove_idle_client()) {
860 DEBUG(0,("winbindd: Exceeding %d "
861 "client connections, no idle "
862 "connection found\n",
863 WINBINDD_MAX_SIMULTANEOUS_CLIENTS));
867 /* new, privileged connection */
868 new_connection(listen_priv_sock, True);
874 winbindd_check_cache_size(time(NULL));
877 /* Check signal handling things */
884 DEBUG(3, ("got SIGHUP\n"));
886 msg_reload_services(MSG_SMB_CONF_UPDATED, pid_to_procid(0), NULL, 0);
891 print_winbindd_status();
900 while ((pid = sys_waitpid(-1, NULL, WNOHANG)) > 0) {
901 winbind_child_died(pid);
908 struct winbindd_state server_state; /* Server state information */
910 int main(int argc, char **argv)
913 static BOOL Fork = True;
914 static BOOL log_stdout = False;
915 struct poptOption long_options[] = {
917 { "stdout", 'S', POPT_ARG_VAL, &log_stdout, True, "Log to stdout" },
918 { "foreground", 'F', POPT_ARG_VAL, &Fork, False, "Daemon in foreground mode" },
919 { "interactive", 'i', POPT_ARG_NONE, NULL, 'i', "Interactive mode" },
920 { "no-caching", 'n', POPT_ARG_VAL, &opt_nocache, True, "Disable caching" },
927 /* glibc (?) likes to print "User defined signal 1" and exit if a
928 SIGUSR[12] is received before a handler is installed */
930 CatchSignal(SIGUSR1, SIG_IGN);
931 CatchSignal(SIGUSR2, SIG_IGN);
933 fault_setup((void (*)(void *))fault_quit );
937 /* Initialise for running in non-root mode */
941 set_remote_machine_name("winbindd", False);
943 /* Set environment variable so we don't recursively call ourselves.
944 This may also be useful interactively. */
946 setenv(WINBINDD_DONT_ENV, "1", 1);
948 /* Initialise samba/rpc client stuff */
950 pc = poptGetContext("winbindd", argc, (const char **)argv, long_options,
951 POPT_CONTEXT_KEEP_FIRST);
953 while ((opt = poptGetNextOpt(pc)) != -1) {
955 /* Don't become a daemon */
965 if (log_stdout && Fork) {
966 printf("Can't log to stdout (-S) unless daemon is in foreground +(-F) or interactive (-i)\n");
967 poptPrintUsage(pc, stderr, 0);
971 if (!override_logfile) {
972 pstr_sprintf(logfile, "%s/log.winbindd", dyn_LOGFILEBASE);
973 lp_set_logfile(logfile);
975 setup_logging("winbindd", log_stdout);
978 DEBUG(1, ("winbindd version %s started.\n", SAMBA_VERSION_STRING) );
979 DEBUGADD( 1, ( "Copyright The Samba Team 2000-2004\n" ) );
981 if (!reload_services_file()) {
982 DEBUG(0, ("error opening config file\n"));
993 if (!secrets_init()) {
995 DEBUG(0,("Could not initialize domain trust account secrets. Giving up\n"));
999 /* Enable netbios namecache */
1003 /* Check winbindd parameters are valid */
1005 ZERO_STRUCT(server_state);
1007 /* Winbind daemon initialisation */
1009 if ( (!winbindd_param_init()) || (!winbindd_upgrade_idmap()) ||
1010 (!idmap_init(lp_idmap_backend())) ) {
1011 DEBUG(1, ("Could not init idmap -- netlogon proxy only\n"));
1012 idmap_set_proxyonly();
1015 /* Unblock all signals we are interested in as they may have been
1016 blocked by the parent process. */
1018 BlockSignals(False, SIGINT);
1019 BlockSignals(False, SIGQUIT);
1020 BlockSignals(False, SIGTERM);
1021 BlockSignals(False, SIGUSR1);
1022 BlockSignals(False, SIGUSR2);
1023 BlockSignals(False, SIGHUP);
1024 BlockSignals(False, SIGCHLD);
1026 /* Setup signal handlers */
1028 CatchSignal(SIGINT, termination_handler); /* Exit on these sigs */
1029 CatchSignal(SIGQUIT, termination_handler);
1030 CatchSignal(SIGTERM, termination_handler);
1031 CatchSignal(SIGCHLD, sigchld_handler);
1033 CatchSignal(SIGPIPE, SIG_IGN); /* Ignore sigpipe */
1035 CatchSignal(SIGUSR2, sigusr2_handler); /* Debugging sigs */
1036 CatchSignal(SIGHUP, sighup_handler);
1039 become_daemon(Fork);
1041 pidfile_create("winbindd");
1045 * If we're interactive we want to set our own process group for
1046 * signal management.
1049 setpgid( (pid_t)0, (pid_t)0);
1054 /* Initialise messaging system */
1056 if (!message_init()) {
1057 DEBUG(0, ("unable to initialise messaging system\n"));
1061 /* React on 'smbcontrol winbindd reload-config' in the same way
1062 as to SIGHUP signal */
1063 message_register(MSG_SMB_CONF_UPDATED, msg_reload_services);
1064 message_register(MSG_SHUTDOWN, msg_shutdown);
1066 /* Handle online/offline messages. */
1067 message_register(MSG_WINBIND_OFFLINE,winbind_msg_offline);
1068 message_register(MSG_WINBIND_ONLINE,winbind_msg_online);
1070 poptFreeContext(pc);
1072 netsamlogon_cache_init(); /* Non-critical */
1078 /* Loop waiting for requests */
1083 trustdom_cache_shutdown();