smbd: fix creation of BUILTIN\{Administrators,Users} when "tdbsam:map builtin = false"
[Samba/wip.git] / source3 / smbd / server.c
blob298afb924c4ea003f0914c2fd8bfce9e5d0ea4d0
1 /*
2 Unix SMB/CIFS implementation.
3 Main SMB server routines
4 Copyright (C) Andrew Tridgell 1992-1998
5 Copyright (C) Martin Pool 2002
6 Copyright (C) Jelmer Vernooij 2002-2003
7 Copyright (C) Volker Lendecke 1993-2007
8 Copyright (C) Jeremy Allison 1993-2007
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 3 of the License, or
13 (at your option) any later version.
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License
21 along with this program. If not, see <http://www.gnu.org/licenses/>.
24 #include "includes.h"
25 #include "system/filesys.h"
26 #include "popt_common.h"
27 #include "smbd/smbd.h"
28 #include "smbd/globals.h"
29 #include "registry/reg_init_full.h"
30 #include "libcli/auth/schannel.h"
31 #include "secrets.h"
32 #include "memcache.h"
33 #include "ctdbd_conn.h"
34 #include "util_cluster.h"
35 #include "printing/queue_process.h"
36 #include "rpc_server/rpc_service_setup.h"
37 #include "rpc_server/rpc_config.h"
38 #include "serverid.h"
39 #include "passdb.h"
40 #include "auth.h"
41 #include "messages.h"
42 #include "smbprofile.h"
43 #include "lib/id_cache.h"
44 #include "lib/param/param.h"
45 #include "lib/background.h"
46 #include "lib/conn_tdb.h"
47 #include "../lib/util/pidfile.h"
48 #include "lib/smbd_shim.h"
49 #include "scavenger.h"
51 struct smbd_open_socket;
52 struct smbd_child_pid;
54 struct smbd_parent_context {
55 bool interactive;
57 struct tevent_context *ev_ctx;
58 struct messaging_context *msg_ctx;
60 /* the list of listening sockets */
61 struct smbd_open_socket *sockets;
63 /* the list of current child processes */
64 struct smbd_child_pid *children;
65 size_t num_children;
67 struct tevent_timer *cleanup_te;
70 struct smbd_open_socket {
71 struct smbd_open_socket *prev, *next;
72 struct smbd_parent_context *parent;
73 int fd;
74 struct tevent_fd *fde;
77 struct smbd_child_pid {
78 struct smbd_child_pid *prev, *next;
79 pid_t pid;
82 extern void start_epmd(struct tevent_context *ev_ctx,
83 struct messaging_context *msg_ctx);
85 extern void start_lsasd(struct tevent_context *ev_ctx,
86 struct messaging_context *msg_ctx);
88 #ifdef WITH_DFS
89 extern int dcelogin_atmost_once;
90 #endif /* WITH_DFS */
92 /*******************************************************************
93 What to do when smb.conf is updated.
94 ********************************************************************/
96 static void smbd_parent_conf_updated(struct messaging_context *msg,
97 void *private_data,
98 uint32_t msg_type,
99 struct server_id server_id,
100 DATA_BLOB *data)
102 struct tevent_context *ev_ctx =
103 talloc_get_type_abort(private_data, struct tevent_context);
105 DEBUG(10,("smbd_parent_conf_updated: Got message saying smb.conf was "
106 "updated. Reloading.\n"));
107 change_to_root_user();
108 reload_services(NULL, NULL, false);
109 printing_subsystem_update(ev_ctx, msg, false);
112 /*******************************************************************
113 What to do when printcap is updated.
114 ********************************************************************/
116 static void smb_pcap_updated(struct messaging_context *msg,
117 void *private_data,
118 uint32_t msg_type,
119 struct server_id server_id,
120 DATA_BLOB *data)
122 struct tevent_context *ev_ctx =
123 talloc_get_type_abort(private_data, struct tevent_context);
125 DEBUG(10,("Got message saying pcap was updated. Reloading.\n"));
126 change_to_root_user();
127 delete_and_reload_printers(ev_ctx, msg);
130 /*******************************************************************
131 Delete a statcache entry.
132 ********************************************************************/
134 static void smb_stat_cache_delete(struct messaging_context *msg,
135 void *private_data,
136 uint32_t msg_tnype,
137 struct server_id server_id,
138 DATA_BLOB *data)
140 const char *name = (const char *)data->data;
141 DEBUG(10,("smb_stat_cache_delete: delete name %s\n", name));
142 stat_cache_delete(name);
145 /****************************************************************************
146 Send a SIGTERM to our process group.
147 *****************************************************************************/
149 static void killkids(void)
151 if(am_parent) kill(0,SIGTERM);
154 static void msg_exit_server(struct messaging_context *msg,
155 void *private_data,
156 uint32_t msg_type,
157 struct server_id server_id,
158 DATA_BLOB *data)
160 DEBUG(3, ("got a SHUTDOWN message\n"));
161 exit_server_cleanly(NULL);
164 #ifdef DEVELOPER
165 static void msg_inject_fault(struct messaging_context *msg,
166 void *private_data,
167 uint32_t msg_type,
168 struct server_id src,
169 DATA_BLOB *data)
171 int sig;
173 if (data->length != sizeof(sig)) {
174 DEBUG(0, ("Process %s sent bogus signal injection request\n",
175 procid_str_static(&src)));
176 return;
179 sig = *(int *)data->data;
180 if (sig == -1) {
181 exit_server("internal error injected");
182 return;
185 #if HAVE_STRSIGNAL
186 DEBUG(0, ("Process %s requested injection of signal %d (%s)\n",
187 procid_str_static(&src), sig, strsignal(sig)));
188 #else
189 DEBUG(0, ("Process %s requested injection of signal %d\n",
190 procid_str_static(&src), sig));
191 #endif
193 kill(getpid(), sig);
195 #endif /* DEVELOPER */
197 NTSTATUS messaging_send_to_children(struct messaging_context *msg_ctx,
198 uint32_t msg_type, DATA_BLOB* data)
200 NTSTATUS status;
201 struct smbd_parent_context *parent = am_parent;
202 struct smbd_child_pid *child;
204 if (parent == NULL) {
205 return NT_STATUS_INTERNAL_ERROR;
208 for (child = parent->children; child != NULL; child = child->next) {
209 status = messaging_send(parent->msg_ctx,
210 pid_to_procid(child->pid),
211 msg_type, data);
212 if (!NT_STATUS_IS_OK(status)) {
213 return status;
216 return NT_STATUS_OK;
220 * Parent smbd process sets its own debug level first and then
221 * sends a message to all the smbd children to adjust their debug
222 * level to that of the parent.
225 static void smbd_msg_debug(struct messaging_context *msg_ctx,
226 void *private_data,
227 uint32_t msg_type,
228 struct server_id server_id,
229 DATA_BLOB *data)
231 debug_message(msg_ctx, private_data, MSG_DEBUG, server_id, data);
233 messaging_send_to_children(msg_ctx, MSG_DEBUG, data);
236 static void smbd_parent_id_cache_kill(struct messaging_context *msg_ctx,
237 void *private_data,
238 uint32_t msg_type,
239 struct server_id server_id,
240 DATA_BLOB* data)
242 const char *msg = (data && data->data)
243 ? (const char *)data->data : "<NULL>";
244 struct id_cache_ref id;
246 if (!id_cache_ref_parse(msg, &id)) {
247 DEBUG(0, ("Invalid ?ID: %s\n", msg));
248 return;
251 id_cache_delete_from_cache(&id);
253 messaging_send_to_children(msg_ctx, msg_type, data);
256 static void smbd_parent_id_cache_delete(struct messaging_context *ctx,
257 void* data,
258 uint32_t msg_type,
259 struct server_id srv_id,
260 DATA_BLOB* msg_data)
262 id_cache_delete_message(ctx, data, msg_type, srv_id, msg_data);
264 messaging_send_to_children(ctx, msg_type, msg_data);
267 struct smbd_parent_notify_state {
268 struct tevent_context *ev;
269 struct messaging_context *msg;
270 uint32_t msgtype;
271 struct notify_context *notify;
274 static int smbd_parent_notify_cleanup(void *private_data);
275 static void smbd_parent_notify_cleanup_done(struct tevent_req *req);
276 static void smbd_parent_notify_proxy_done(struct tevent_req *req);
278 static bool smbd_parent_notify_init(TALLOC_CTX *mem_ctx,
279 struct messaging_context *msg,
280 struct tevent_context *ev)
282 struct smbd_parent_notify_state *state;
283 struct tevent_req *req;
285 state = talloc(mem_ctx, struct smbd_parent_notify_state);
286 if (state == NULL) {
287 return false;
289 state->msg = msg;
290 state->ev = ev;
291 state->msgtype = MSG_SMB_NOTIFY_CLEANUP;
293 state->notify = notify_init(state, msg, ev);
294 if (state->notify == NULL) {
295 goto fail;
297 req = background_job_send(
298 state, state->ev, state->msg, &state->msgtype, 1,
299 lp_parm_int(-1, "smbd", "notify cleanup interval", 60),
300 smbd_parent_notify_cleanup, state->notify);
301 if (req == NULL) {
302 goto fail;
304 tevent_req_set_callback(req, smbd_parent_notify_cleanup_done, state);
306 if (!lp_clustering()) {
307 return true;
310 req = notify_cluster_proxy_send(state, ev, state->notify);
311 if (req == NULL) {
312 goto fail;
314 tevent_req_set_callback(req, smbd_parent_notify_proxy_done, state);
316 return true;
317 fail:
318 TALLOC_FREE(state);
319 return false;
322 static int smbd_parent_notify_cleanup(void *private_data)
324 struct notify_context *notify = talloc_get_type_abort(
325 private_data, struct notify_context);
326 notify_cleanup(notify);
327 return lp_parm_int(-1, "smbd", "notify cleanup interval", 60);
330 static void smbd_parent_notify_cleanup_done(struct tevent_req *req)
332 struct smbd_parent_notify_state *state = tevent_req_callback_data(
333 req, struct smbd_parent_notify_state);
334 NTSTATUS status;
336 status = background_job_recv(req);
337 TALLOC_FREE(req);
338 DEBUG(1, ("notify cleanup job ended with %s\n", nt_errstr(status)));
341 * Provide self-healing: Whatever the error condition was, it
342 * will have printed it into log.smbd. Just retrying and
343 * spamming log.smbd once a minute should be fine.
345 req = background_job_send(
346 state, state->ev, state->msg, &state->msgtype, 1, 60,
347 smbd_parent_notify_cleanup, state->notify);
348 if (req == NULL) {
349 DEBUG(1, ("background_job_send failed\n"));
350 return;
352 tevent_req_set_callback(req, smbd_parent_notify_cleanup_done, state);
355 static void smbd_parent_notify_proxy_done(struct tevent_req *req)
357 int ret;
359 ret = notify_cluster_proxy_recv(req);
360 TALLOC_FREE(req);
361 DEBUG(1, ("notify proxy job ended with %s\n", strerror(ret)));
364 static void smb_parent_force_tdis(struct messaging_context *ctx,
365 void* data,
366 uint32_t msg_type,
367 struct server_id srv_id,
368 DATA_BLOB* msg_data)
370 messaging_send_to_children(ctx, msg_type, msg_data);
373 static void smb_parent_kill_client_by_ip(struct messaging_context *ctx,
374 void *data,
375 uint32_t msg_type,
376 struct server_id srv_id,
377 DATA_BLOB* msg_data)
379 if (am_parent) {
380 messaging_send_to_children(ctx, msg_type, msg_data);
384 static void add_child_pid(struct smbd_parent_context *parent,
385 pid_t pid)
387 struct smbd_child_pid *child;
389 child = talloc_zero(parent, struct smbd_child_pid);
390 if (child == NULL) {
391 DEBUG(0, ("Could not add child struct -- malloc failed\n"));
392 return;
394 child->pid = pid;
395 DLIST_ADD(parent->children, child);
396 parent->num_children += 1;
399 static void smb_tell_num_children(struct messaging_context *ctx, void *data,
400 uint32_t msg_type, struct server_id srv_id,
401 DATA_BLOB *msg_data)
403 uint8_t buf[sizeof(uint32_t)];
405 if (am_parent) {
406 SIVAL(buf, 0, am_parent->num_children);
407 messaging_send_buf(ctx, srv_id, MSG_SMB_NUM_CHILDREN,
408 buf, sizeof(buf));
414 at most every smbd:cleanuptime seconds (default 20), we scan the BRL
415 and locking database for entries to cleanup. As a side effect this
416 also cleans up dead entries in the connections database (due to the
417 traversal in message_send_all()
419 Using a timer for this prevents a flood of traversals when a large
420 number of clients disconnect at the same time (perhaps due to a
421 network outage).
424 static void cleanup_timeout_fn(struct tevent_context *event_ctx,
425 struct tevent_timer *te,
426 struct timeval now,
427 void *private_data)
429 struct smbd_parent_context *parent =
430 talloc_get_type_abort(private_data,
431 struct smbd_parent_context);
433 parent->cleanup_te = NULL;
435 DEBUG(1,("Cleaning up brl and lock database after unclean shutdown\n"));
436 message_send_all(parent->msg_ctx, MSG_SMB_UNLOCK, NULL, 0, NULL);
437 messaging_send_buf(parent->msg_ctx,
438 messaging_server_id(parent->msg_ctx),
439 MSG_SMB_BRL_VALIDATE, NULL, 0);
442 static void remove_child_pid(struct smbd_parent_context *parent,
443 pid_t pid,
444 bool unclean_shutdown)
446 struct smbd_child_pid *child;
447 struct server_id child_id;
448 NTSTATUS status;
450 child_id = pid_to_procid(pid);
452 status = messaging_dgm_cleanup(parent->msg_ctx, pid);
453 DEBUG(10, ("%s: messaging_dgm_cleanup returned %s\n",
454 __func__, nt_errstr(status)));
456 for (child = parent->children; child != NULL; child = child->next) {
457 if (child->pid == pid) {
458 struct smbd_child_pid *tmp = child;
459 DLIST_REMOVE(parent->children, child);
460 TALLOC_FREE(tmp);
461 parent->num_children -= 1;
462 break;
466 if (child == NULL) {
467 /* not all forked child processes are added to the children list */
468 DEBUG(2, ("Could not find child %d -- ignoring\n", (int)pid));
469 return;
472 if (unclean_shutdown) {
473 /* a child terminated uncleanly so tickle all
474 processes to see if they can grab any of the
475 pending locks
477 DEBUG(3,(__location__ " Unclean shutdown of pid %u\n",
478 (unsigned int)pid));
479 if (parent->cleanup_te == NULL) {
480 /* call the cleanup timer, but not too often */
481 int cleanup_time = lp_parm_int(-1, "smbd", "cleanuptime", 20);
482 parent->cleanup_te = tevent_add_timer(parent->ev_ctx,
483 parent,
484 timeval_current_ofs(cleanup_time, 0),
485 cleanup_timeout_fn,
486 parent);
487 DEBUG(1,("Scheduled cleanup of brl and lock database after unclean shutdown\n"));
491 if (!serverid_deregister(child_id)) {
492 DEBUG(1, ("Could not remove pid %d from serverid.tdb\n",
493 (int)pid));
497 /****************************************************************************
498 Have we reached the process limit ?
499 ****************************************************************************/
501 static bool allowable_number_of_smbd_processes(struct smbd_parent_context *parent)
503 int max_processes = lp_max_smbd_processes();
505 if (!max_processes)
506 return True;
508 return parent->num_children < max_processes;
511 static void smbd_sig_chld_handler(struct tevent_context *ev,
512 struct tevent_signal *se,
513 int signum,
514 int count,
515 void *siginfo,
516 void *private_data)
518 pid_t pid;
519 int status;
520 struct smbd_parent_context *parent =
521 talloc_get_type_abort(private_data,
522 struct smbd_parent_context);
524 while ((pid = sys_waitpid(-1, &status, WNOHANG)) > 0) {
525 bool unclean_shutdown = False;
527 /* If the child terminated normally, assume
528 it was an unclean shutdown unless the
529 status is 0
531 if (WIFEXITED(status)) {
532 unclean_shutdown = WEXITSTATUS(status);
534 /* If the child terminated due to a signal
535 we always assume it was unclean.
537 if (WIFSIGNALED(status)) {
538 unclean_shutdown = True;
540 remove_child_pid(parent, pid, unclean_shutdown);
544 static void smbd_setup_sig_chld_handler(struct smbd_parent_context *parent)
546 struct tevent_signal *se;
548 se = tevent_add_signal(parent->ev_ctx,
549 parent, /* mem_ctx */
550 SIGCHLD, 0,
551 smbd_sig_chld_handler,
552 parent);
553 if (!se) {
554 exit_server("failed to setup SIGCHLD handler");
558 static void smbd_open_socket_close_fn(struct tevent_context *ev,
559 struct tevent_fd *fde,
560 int fd,
561 void *private_data)
563 /* this might be the socket_wrapper swrap_close() */
564 close(fd);
567 static void smbd_accept_connection(struct tevent_context *ev,
568 struct tevent_fd *fde,
569 uint16_t flags,
570 void *private_data)
572 struct smbd_open_socket *s = talloc_get_type_abort(private_data,
573 struct smbd_open_socket);
574 struct messaging_context *msg_ctx = s->parent->msg_ctx;
575 struct sockaddr_storage addr;
576 socklen_t in_addrlen = sizeof(addr);
577 int fd;
578 pid_t pid = 0;
579 uint64_t unique_id;
581 fd = accept(s->fd, (struct sockaddr *)(void *)&addr,&in_addrlen);
582 if (fd == -1 && errno == EINTR)
583 return;
585 if (fd == -1) {
586 DEBUG(0,("accept: %s\n",
587 strerror(errno)));
588 return;
591 if (s->parent->interactive) {
592 reinit_after_fork(msg_ctx, ev, true);
593 smbd_process(ev, msg_ctx, fd, true);
594 exit_server_cleanly("end of interactive mode");
595 return;
598 if (!allowable_number_of_smbd_processes(s->parent)) {
599 close(fd);
600 return;
604 * Generate a unique id in the parent process so that we use
605 * the global random state in the parent.
607 unique_id = serverid_get_random_unique_id();
609 pid = fork();
610 if (pid == 0) {
611 NTSTATUS status = NT_STATUS_OK;
613 /* Child code ... */
614 am_parent = NULL;
617 * Can't use TALLOC_FREE here. Nulling out the argument to it
618 * would overwrite memory we've just freed.
620 talloc_free(s->parent);
621 s = NULL;
623 set_my_unique_id(unique_id);
625 /* Stop zombies, the parent explicitly handles
626 * them, counting worker smbds. */
627 CatchChild();
629 status = reinit_after_fork(msg_ctx,
631 true);
632 if (!NT_STATUS_IS_OK(status)) {
633 if (NT_STATUS_EQUAL(status,
634 NT_STATUS_TOO_MANY_OPENED_FILES)) {
635 DEBUG(0,("child process cannot initialize "
636 "because too many files are open\n"));
637 goto exit;
639 if (lp_clustering() &&
640 NT_STATUS_EQUAL(status,
641 NT_STATUS_INTERNAL_DB_ERROR)) {
642 DEBUG(1,("child process cannot initialize "
643 "because connection to CTDB "
644 "has failed\n"));
645 goto exit;
648 DEBUG(0,("reinit_after_fork() failed\n"));
649 smb_panic("reinit_after_fork() failed");
652 smbd_process(ev, msg_ctx, fd, false);
653 exit:
654 exit_server_cleanly("end of child");
655 return;
658 if (pid < 0) {
659 DEBUG(0,("smbd_accept_connection: fork() failed: %s\n",
660 strerror(errno)));
663 /* The parent doesn't need this socket */
664 close(fd);
666 /* Sun May 6 18:56:14 2001 ackley@cs.unm.edu:
667 Clear the closed fd info out of server_fd --
668 and more importantly, out of client_fd in
669 util_sock.c, to avoid a possible
670 getpeername failure if we reopen the logs
671 and use %I in the filename.
674 if (pid != 0) {
675 add_child_pid(s->parent, pid);
678 /* Force parent to check log size after
679 * spawning child. Fix from
680 * klausr@ITAP.Physik.Uni-Stuttgart.De. The
681 * parent smbd will log to logserver.smb. It
682 * writes only two messages for each child
683 * started/finished. But each child writes,
684 * say, 50 messages also in logserver.smb,
685 * begining with the debug_count of the
686 * parent, before the child opens its own log
687 * file logserver.client. In a worst case
688 * scenario the size of logserver.smb would be
689 * checked after about 50*50=2500 messages
690 * (ca. 100kb).
691 * */
692 force_check_log_size();
695 static bool smbd_open_one_socket(struct smbd_parent_context *parent,
696 struct tevent_context *ev_ctx,
697 const struct sockaddr_storage *ifss,
698 uint16_t port)
700 struct smbd_open_socket *s;
702 s = talloc(parent, struct smbd_open_socket);
703 if (!s) {
704 return false;
707 s->parent = parent;
708 s->fd = open_socket_in(SOCK_STREAM,
709 port,
710 parent->sockets == NULL ? 0 : 2,
711 ifss,
712 true);
713 if (s->fd == -1) {
714 DEBUG(0,("smbd_open_once_socket: open_socket_in: "
715 "%s\n", strerror(errno)));
716 TALLOC_FREE(s);
718 * We ignore an error here, as we've done before
720 return true;
723 /* ready to listen */
724 set_socket_options(s->fd, "SO_KEEPALIVE");
725 set_socket_options(s->fd, lp_socket_options());
727 /* Set server socket to
728 * non-blocking for the accept. */
729 set_blocking(s->fd, False);
731 if (listen(s->fd, SMBD_LISTEN_BACKLOG) == -1) {
732 DEBUG(0,("open_sockets_smbd: listen: "
733 "%s\n", strerror(errno)));
734 close(s->fd);
735 TALLOC_FREE(s);
736 return false;
739 s->fde = tevent_add_fd(ev_ctx,
741 s->fd, TEVENT_FD_READ,
742 smbd_accept_connection,
744 if (!s->fde) {
745 DEBUG(0,("open_sockets_smbd: "
746 "tevent_add_fd: %s\n",
747 strerror(errno)));
748 close(s->fd);
749 TALLOC_FREE(s);
750 return false;
752 tevent_fd_set_close_fn(s->fde, smbd_open_socket_close_fn);
754 DLIST_ADD_END(parent->sockets, s, struct smbd_open_socket *);
756 return true;
759 /****************************************************************************
760 Open the socket communication.
761 ****************************************************************************/
763 static bool open_sockets_smbd(struct smbd_parent_context *parent,
764 struct tevent_context *ev_ctx,
765 struct messaging_context *msg_ctx,
766 const char *smb_ports)
768 int num_interfaces = iface_count();
769 int i,j;
770 const char **ports;
771 unsigned dns_port = 0;
773 #ifdef HAVE_ATEXIT
774 atexit(killkids);
775 #endif
777 /* Stop zombies */
778 smbd_setup_sig_chld_handler(parent);
780 ports = lp_smb_ports();
782 /* use a reasonable default set of ports - listing on 445 and 139 */
783 if (smb_ports) {
784 ports = (const char **)str_list_make_v3(talloc_tos(), smb_ports, NULL);
787 for (j = 0; ports && ports[j]; j++) {
788 unsigned port = atoi(ports[j]);
790 if (port == 0 || port > 0xffff) {
791 exit_server_cleanly("Invalid port in the config or on "
792 "the commandline specified!");
796 if (lp_interfaces() && lp_bind_interfaces_only()) {
797 /* We have been given an interfaces line, and been
798 told to only bind to those interfaces. Create a
799 socket per interface and bind to only these.
802 /* Now open a listen socket for each of the
803 interfaces. */
804 for(i = 0; i < num_interfaces; i++) {
805 const struct sockaddr_storage *ifss =
806 iface_n_sockaddr_storage(i);
807 if (ifss == NULL) {
808 DEBUG(0,("open_sockets_smbd: "
809 "interface %d has NULL IP address !\n",
810 i));
811 continue;
814 for (j = 0; ports && ports[j]; j++) {
815 unsigned port = atoi(ports[j]);
817 /* Keep the first port for mDNS service
818 * registration.
820 if (dns_port == 0) {
821 dns_port = port;
824 if (!smbd_open_one_socket(parent,
825 ev_ctx,
826 ifss,
827 port)) {
828 return false;
832 } else {
833 /* Just bind to 0.0.0.0 - accept connections
834 from anywhere. */
836 const char *sock_addr;
837 char *sock_tok;
838 const char *sock_ptr;
840 #if HAVE_IPV6
841 sock_addr = "::,0.0.0.0";
842 #else
843 sock_addr = "0.0.0.0";
844 #endif
846 for (sock_ptr=sock_addr;
847 next_token_talloc(talloc_tos(), &sock_ptr, &sock_tok, " \t,"); ) {
848 for (j = 0; ports && ports[j]; j++) {
849 struct sockaddr_storage ss;
850 unsigned port = atoi(ports[j]);
852 /* Keep the first port for mDNS service
853 * registration.
855 if (dns_port == 0) {
856 dns_port = port;
859 /* open an incoming socket */
860 if (!interpret_string_addr(&ss, sock_tok,
861 AI_NUMERICHOST|AI_PASSIVE)) {
862 continue;
865 if (!smbd_open_one_socket(parent,
866 ev_ctx,
867 &ss,
868 port)) {
869 return false;
875 if (parent->sockets == NULL) {
876 DEBUG(0,("open_sockets_smbd: No "
877 "sockets available to bind to.\n"));
878 return false;
881 /* Setup the main smbd so that we can get messages. Note that
882 do this after starting listening. This is needed as when in
883 clustered mode, ctdb won't allow us to start doing database
884 operations until it has gone thru a full startup, which
885 includes checking to see that smbd is listening. */
887 if (!serverid_register(messaging_server_id(msg_ctx),
888 FLAG_MSG_GENERAL|FLAG_MSG_SMBD
889 |FLAG_MSG_PRINT_GENERAL
890 |FLAG_MSG_DBWRAP)) {
891 DEBUG(0, ("open_sockets_smbd: Failed to register "
892 "myself in serverid.tdb\n"));
893 return false;
896 /* Listen to messages */
898 messaging_register(msg_ctx, NULL, MSG_SHUTDOWN, msg_exit_server);
899 messaging_register(msg_ctx, ev_ctx, MSG_SMB_CONF_UPDATED,
900 smbd_parent_conf_updated);
901 messaging_register(msg_ctx, NULL, MSG_SMB_STAT_CACHE_DELETE,
902 smb_stat_cache_delete);
903 messaging_register(msg_ctx, NULL, MSG_DEBUG, smbd_msg_debug);
904 messaging_register(msg_ctx, ev_ctx, MSG_PRINTER_PCAP,
905 smb_pcap_updated);
906 messaging_register(msg_ctx, NULL, MSG_SMB_BRL_VALIDATE,
907 brl_revalidate);
908 messaging_register(msg_ctx, NULL, MSG_SMB_FORCE_TDIS,
909 smb_parent_force_tdis);
910 messaging_register(msg_ctx, NULL, MSG_SMB_KILL_CLIENT_IP,
911 smb_parent_kill_client_by_ip);
912 messaging_register(msg_ctx, NULL, MSG_SMB_TELL_NUM_CHILDREN,
913 smb_tell_num_children);
915 messaging_register(msg_ctx, NULL,
916 ID_CACHE_DELETE, smbd_parent_id_cache_delete);
917 messaging_register(msg_ctx, NULL,
918 ID_CACHE_KILL, smbd_parent_id_cache_kill);
920 if (lp_clustering()) {
921 ctdbd_register_reconfigure(messaging_ctdbd_connection());
924 #ifdef DEVELOPER
925 messaging_register(msg_ctx, NULL, MSG_SMB_INJECT_FAULT,
926 msg_inject_fault);
927 #endif
929 if (lp_multicast_dns_register() && (dns_port != 0)) {
930 #ifdef WITH_DNSSD_SUPPORT
931 smbd_setup_mdns_registration(ev_ctx,
932 parent, dns_port);
933 #endif
934 #ifdef WITH_AVAHI_SUPPORT
935 void *avahi_conn;
937 avahi_conn = avahi_start_register(ev_ctx,
938 ev_ctx,
939 dns_port);
940 if (avahi_conn == NULL) {
941 DEBUG(10, ("avahi_start_register failed\n"));
943 #endif
946 return true;
951 handle stdin becoming readable when we are in --foreground mode
953 static void smbd_stdin_handler(struct tevent_context *ev,
954 struct tevent_fd *fde,
955 uint16_t flags,
956 void *private_data)
958 char c;
959 if (read(0, &c, 1) != 1) {
960 /* we have reached EOF on stdin, which means the
961 parent has exited. Shutdown the server */
962 exit_server_cleanly("EOF on stdin");
966 static void smbd_parent_loop(struct tevent_context *ev_ctx,
967 struct smbd_parent_context *parent)
969 /* now accept incoming connections - forking a new process
970 for each incoming connection */
971 DEBUG(2,("waiting for connections\n"));
972 while (1) {
973 int ret;
974 TALLOC_CTX *frame = talloc_stackframe();
976 ret = tevent_loop_once(ev_ctx);
977 if (ret != 0) {
978 exit_server_cleanly("tevent_loop_once() error");
981 TALLOC_FREE(frame);
982 } /* end while 1 */
984 /* NOTREACHED return True; */
988 /****************************************************************************
989 Initialise connect, service and file structs.
990 ****************************************************************************/
992 static bool init_structs(void )
995 * Set the machine NETBIOS name if not already
996 * set from the config file.
999 if (!init_names())
1000 return False;
1002 if (!secrets_init())
1003 return False;
1005 return True;
1008 static void smbd_parent_sig_term_handler(struct tevent_context *ev,
1009 struct tevent_signal *se,
1010 int signum,
1011 int count,
1012 void *siginfo,
1013 void *private_data)
1015 exit_server_cleanly("termination signal");
1018 static void smbd_parent_sig_hup_handler(struct tevent_context *ev,
1019 struct tevent_signal *se,
1020 int signum,
1021 int count,
1022 void *siginfo,
1023 void *private_data)
1025 struct smbd_parent_context *parent =
1026 talloc_get_type_abort(private_data,
1027 struct smbd_parent_context);
1029 change_to_root_user();
1030 DEBUG(1,("parent: Reloading services after SIGHUP\n"));
1031 reload_services(NULL, NULL, false);
1033 printing_subsystem_update(parent->ev_ctx, parent->msg_ctx, true);
1036 /****************************************************************************
1037 main program.
1038 ****************************************************************************/
1040 /* Declare prototype for build_options() to avoid having to run it through
1041 mkproto.h. Mixing $(builddir) and $(srcdir) source files in the current
1042 prototype generation system is too complicated. */
1044 extern void build_options(bool screen);
1046 int main(int argc,const char *argv[])
1048 /* shall I run as a daemon */
1049 bool is_daemon = false;
1050 bool interactive = false;
1051 bool Fork = true;
1052 bool no_process_group = false;
1053 bool log_stdout = false;
1054 char *ports = NULL;
1055 char *profile_level = NULL;
1056 int opt;
1057 poptContext pc;
1058 bool print_build_options = False;
1059 enum {
1060 OPT_DAEMON = 1000,
1061 OPT_INTERACTIVE,
1062 OPT_FORK,
1063 OPT_NO_PROCESS_GROUP,
1064 OPT_LOG_STDOUT
1066 struct poptOption long_options[] = {
1067 POPT_AUTOHELP
1068 {"daemon", 'D', POPT_ARG_NONE, NULL, OPT_DAEMON, "Become a daemon (default)" },
1069 {"interactive", 'i', POPT_ARG_NONE, NULL, OPT_INTERACTIVE, "Run interactive (not a daemon)"},
1070 {"foreground", 'F', POPT_ARG_NONE, NULL, OPT_FORK, "Run daemon in foreground (for daemontools, etc.)" },
1071 {"no-process-group", '\0', POPT_ARG_NONE, NULL, OPT_NO_PROCESS_GROUP, "Don't create a new process group" },
1072 {"log-stdout", 'S', POPT_ARG_NONE, NULL, OPT_LOG_STDOUT, "Log to stdout" },
1073 {"build-options", 'b', POPT_ARG_NONE, NULL, 'b', "Print build options" },
1074 {"port", 'p', POPT_ARG_STRING, &ports, 0, "Listen on the specified ports"},
1075 {"profiling-level", 'P', POPT_ARG_STRING, &profile_level, 0, "Set profiling level","PROFILE_LEVEL"},
1076 POPT_COMMON_SAMBA
1077 POPT_TABLEEND
1079 struct smbd_parent_context *parent = NULL;
1080 TALLOC_CTX *frame;
1081 NTSTATUS status;
1082 struct tevent_context *ev_ctx;
1083 struct messaging_context *msg_ctx;
1084 struct server_id server_id;
1085 struct tevent_signal *se;
1086 char *np_dir = NULL;
1087 static const struct smbd_shim smbd_shim_fns =
1089 .cancel_pending_lock_requests_by_fid = smbd_cancel_pending_lock_requests_by_fid,
1090 .send_stat_cache_delete_message = smbd_send_stat_cache_delete_message,
1091 .change_to_root_user = smbd_change_to_root_user,
1092 .become_authenticated_pipe_user = smbd_become_authenticated_pipe_user,
1093 .unbecome_authenticated_pipe_user = smbd_unbecome_authenticated_pipe_user,
1095 .contend_level2_oplocks_begin = smbd_contend_level2_oplocks_begin,
1096 .contend_level2_oplocks_end = smbd_contend_level2_oplocks_end,
1098 .become_root = smbd_become_root,
1099 .unbecome_root = smbd_unbecome_root,
1101 .exit_server = smbd_exit_server,
1102 .exit_server_cleanly = smbd_exit_server_cleanly,
1106 * Do this before any other talloc operation
1108 talloc_enable_null_tracking();
1109 frame = talloc_stackframe();
1111 setup_logging(argv[0], DEBUG_DEFAULT_STDOUT);
1113 load_case_tables();
1115 set_smbd_shim(&smbd_shim_fns);
1117 smbd_init_globals();
1119 TimeInit();
1121 #ifdef HAVE_SET_AUTH_PARAMETERS
1122 set_auth_parameters(argc,argv);
1123 #endif
1125 pc = poptGetContext("smbd", argc, argv, long_options, 0);
1126 while((opt = poptGetNextOpt(pc)) != -1) {
1127 switch (opt) {
1128 case OPT_DAEMON:
1129 is_daemon = true;
1130 break;
1131 case OPT_INTERACTIVE:
1132 interactive = true;
1133 break;
1134 case OPT_FORK:
1135 Fork = false;
1136 break;
1137 case OPT_NO_PROCESS_GROUP:
1138 no_process_group = true;
1139 break;
1140 case OPT_LOG_STDOUT:
1141 log_stdout = true;
1142 break;
1143 case 'b':
1144 print_build_options = True;
1145 break;
1146 default:
1147 d_fprintf(stderr, "\nInvalid option %s: %s\n\n",
1148 poptBadOption(pc, 0), poptStrerror(opt));
1149 poptPrintUsage(pc, stderr, 0);
1150 exit(1);
1153 poptFreeContext(pc);
1155 if (interactive) {
1156 Fork = False;
1157 log_stdout = True;
1160 if (log_stdout) {
1161 setup_logging(argv[0], DEBUG_STDOUT);
1162 } else {
1163 setup_logging(argv[0], DEBUG_FILE);
1166 if (print_build_options) {
1167 build_options(True); /* Display output to screen as well as debug */
1168 exit(0);
1171 #ifdef HAVE_SETLUID
1172 /* needed for SecureWare on SCO */
1173 setluid(0);
1174 #endif
1176 set_remote_machine_name("smbd", False);
1178 if (interactive && (DEBUGLEVEL >= 9)) {
1179 talloc_enable_leak_report();
1182 if (log_stdout && Fork) {
1183 DEBUG(0,("ERROR: Can't log to stdout (-S) unless daemon is in foreground (-F) or interactive (-i)\n"));
1184 exit(1);
1187 /* we want to re-seed early to prevent time delays causing
1188 client problems at a later date. (tridge) */
1189 generate_random_buffer(NULL, 0);
1191 /* get initial effective uid and gid */
1192 sec_init();
1194 /* make absolutely sure we run as root - to handle cases where people
1195 are crazy enough to have it setuid */
1196 gain_root_privilege();
1197 gain_root_group_privilege();
1199 fault_setup();
1200 dump_core_setup("smbd", lp_logfile(talloc_tos()));
1202 /* we are never interested in SIGPIPE */
1203 BlockSignals(True,SIGPIPE);
1205 #if defined(SIGFPE)
1206 /* we are never interested in SIGFPE */
1207 BlockSignals(True,SIGFPE);
1208 #endif
1210 #if defined(SIGUSR2)
1211 /* We are no longer interested in USR2 */
1212 BlockSignals(True,SIGUSR2);
1213 #endif
1215 /* POSIX demands that signals are inherited. If the invoking process has
1216 * these signals masked, we will have problems, as we won't recieve them. */
1217 BlockSignals(False, SIGHUP);
1218 BlockSignals(False, SIGUSR1);
1219 BlockSignals(False, SIGTERM);
1221 /* Ensure we leave no zombies until we
1222 * correctly set up child handling below. */
1224 CatchChild();
1226 /* we want total control over the permissions on created files,
1227 so set our umask to 0 */
1228 umask(0);
1230 reopen_logs();
1232 DEBUG(0,("smbd version %s started.\n", samba_version_string()));
1233 DEBUGADD(0,("%s\n", COPYRIGHT_STARTUP_MESSAGE));
1235 DEBUG(2,("uid=%d gid=%d euid=%d egid=%d\n",
1236 (int)getuid(),(int)getgid(),(int)geteuid(),(int)getegid()));
1238 /* Output the build options to the debug log */
1239 build_options(False);
1241 if (sizeof(uint16) < 2 || sizeof(uint32) < 4) {
1242 DEBUG(0,("ERROR: Samba is not configured correctly for the word size on your machine\n"));
1243 exit(1);
1246 if (!lp_load_initial_only(get_dyn_CONFIGFILE())) {
1247 DEBUG(0, ("error opening config file '%s'\n", get_dyn_CONFIGFILE()));
1248 exit(1);
1251 if (!cluster_probe_ok()) {
1252 exit(1);
1255 /* Init the security context and global current_user */
1256 init_sec_ctx();
1259 * Initialize the event context. The event context needs to be
1260 * initialized before the messaging context, cause the messaging
1261 * context holds an event context.
1262 * FIXME: This should be s3_tevent_context_init()
1264 ev_ctx = server_event_context();
1265 if (ev_ctx == NULL) {
1266 exit(1);
1270 * Init the messaging context
1271 * FIXME: This should only call messaging_init()
1273 msg_ctx = server_messaging_context();
1274 if (msg_ctx == NULL) {
1275 exit(1);
1279 * Reloading of the printers will not work here as we don't have a
1280 * server info and rpc services set up. It will be called later.
1282 if (!reload_services(NULL, NULL, false)) {
1283 exit(1);
1286 if (lp_server_role() == ROLE_ACTIVE_DIRECTORY_DC
1287 && !lp_parm_bool(-1, "server role check", "inhibit", false)) {
1288 DEBUG(0, ("server role = 'active directory domain controller' not compatible with running smbd standalone. \n"));
1289 DEBUGADD(0, ("You should start 'samba' instead, and it will control starting smbd if required\n"));
1290 exit(1);
1293 /* ...NOTE... Log files are working from this point! */
1295 DEBUG(3,("loaded services\n"));
1297 init_structs();
1299 #ifdef WITH_PROFILE
1300 if (!profile_setup(msg_ctx, False)) {
1301 DEBUG(0,("ERROR: failed to setup profiling\n"));
1302 return -1;
1304 if (profile_level != NULL) {
1305 int pl = atoi(profile_level);
1306 struct server_id src;
1308 DEBUG(1, ("setting profiling level: %s\n",profile_level));
1309 src.pid = getpid();
1310 set_profile_level(pl, src);
1312 #endif
1314 if (!is_daemon && !is_a_socket(0)) {
1315 if (!interactive) {
1316 DEBUG(3, ("Standard input is not a socket, "
1317 "assuming -D option\n"));
1321 * Setting is_daemon here prevents us from eventually calling
1322 * the open_sockets_inetd()
1325 is_daemon = True;
1328 if (is_daemon && !interactive) {
1329 DEBUG(3, ("Becoming a daemon.\n"));
1330 become_daemon(Fork, no_process_group, log_stdout);
1333 set_my_unique_id(serverid_get_random_unique_id());
1335 #if HAVE_SETPGID
1337 * If we're interactive we want to set our own process group for
1338 * signal management.
1340 if (interactive && !no_process_group)
1341 setpgid( (pid_t)0, (pid_t)0);
1342 #endif
1344 if (!directory_exist(lp_lock_directory()))
1345 mkdir(lp_lock_directory(), 0755);
1347 if (!directory_exist(lp_pid_directory()))
1348 mkdir(lp_pid_directory(), 0755);
1350 if (is_daemon)
1351 pidfile_create(lp_pid_directory(), "smbd");
1353 status = reinit_after_fork(msg_ctx,
1354 ev_ctx,
1355 false);
1356 if (!NT_STATUS_IS_OK(status)) {
1357 exit_daemon("reinit_after_fork() failed", map_errno_from_nt_status(status));
1360 if (!interactive) {
1362 * Do not initialize the parent-child-pipe before becoming a
1363 * daemon: this is used to detect a died parent in the child
1364 * process.
1366 status = init_before_fork();
1367 if (!NT_STATUS_IS_OK(status)) {
1368 exit_daemon(nt_errstr(status), map_errno_from_nt_status(status));
1372 parent = talloc_zero(ev_ctx, struct smbd_parent_context);
1373 if (!parent) {
1374 exit_server("talloc(struct smbd_parent_context) failed");
1376 parent->interactive = interactive;
1377 parent->ev_ctx = ev_ctx;
1378 parent->msg_ctx = msg_ctx;
1379 am_parent = parent;
1381 se = tevent_add_signal(parent->ev_ctx,
1382 parent,
1383 SIGTERM, 0,
1384 smbd_parent_sig_term_handler,
1385 parent);
1386 if (!se) {
1387 exit_server("failed to setup SIGTERM handler");
1389 se = tevent_add_signal(parent->ev_ctx,
1390 parent,
1391 SIGHUP, 0,
1392 smbd_parent_sig_hup_handler,
1393 parent);
1394 if (!se) {
1395 exit_server("failed to setup SIGHUP handler");
1398 /* Setup all the TDB's - including CLEAR_IF_FIRST tdb's. */
1400 if (smbd_memcache() == NULL) {
1401 exit_daemon("no memcache available", EACCES);
1404 memcache_set_global(smbd_memcache());
1406 /* Initialise the password backed before the global_sam_sid
1407 to ensure that we fetch from ldap before we make a domain sid up */
1409 if(!initialize_password_db(false, ev_ctx))
1410 exit(1);
1412 if (!secrets_init()) {
1413 exit_daemon("smbd can not open secrets.tdb", EACCES);
1416 if (lp_server_role() == ROLE_DOMAIN_BDC || lp_server_role() == ROLE_DOMAIN_PDC) {
1417 struct loadparm_context *lp_ctx = loadparm_init_s3(NULL, loadparm_s3_helpers());
1418 if (!open_schannel_session_store(NULL, lp_ctx)) {
1419 exit_daemon("ERROR: Samba cannot open schannel store for secured NETLOGON operations.", EACCES);
1421 TALLOC_FREE(lp_ctx);
1424 if(!get_global_sam_sid()) {
1425 exit_daemon("Samba cannot create a SAM SID", EACCES);
1428 server_id = messaging_server_id(msg_ctx);
1429 status = smbXsrv_version_global_init(&server_id);
1430 if (!NT_STATUS_IS_OK(status)) {
1431 exit_daemon("Samba cannot init server context", EACCES);
1434 status = smbXsrv_session_global_init();
1435 if (!NT_STATUS_IS_OK(status)) {
1436 exit_daemon("Samba cannot init session context", EACCES);
1439 status = smbXsrv_tcon_global_init();
1440 if (!NT_STATUS_IS_OK(status)) {
1441 exit_daemon("Samba cannot init tcon context", EACCES);
1444 if (!locking_init())
1445 exit_daemon("Samba cannot init locking", EACCES);
1447 if (!smbd_parent_notify_init(NULL, msg_ctx, ev_ctx)) {
1448 exit_daemon("Samba cannot init notification", EACCES);
1451 if (!messaging_parent_dgm_cleanup_init(msg_ctx)) {
1452 exit(1);
1455 if (!smbd_scavenger_init(NULL, msg_ctx, ev_ctx)) {
1456 exit_daemon("Samba cannot init scavenging", EACCES);
1459 if (!serverid_parent_init(ev_ctx)) {
1460 exit_daemon("Samba cannot init server id", EACCES);
1463 if (!W_ERROR_IS_OK(registry_init_full()))
1464 exit_daemon("Samba cannot init registry", EACCES);
1466 /* Open the share_info.tdb here, so we don't have to open
1467 after the fork on every single connection. This is a small
1468 performance improvment and reduces the total number of system
1469 fds used. */
1470 if (!share_info_db_init()) {
1471 exit_daemon("ERROR: failed to load share info db.", EACCES);
1474 status = init_system_session_info();
1475 if (!NT_STATUS_IS_OK(status)) {
1476 DEBUG(1, ("ERROR: failed to setup system user info: %s.\n",
1477 nt_errstr(status)));
1478 return -1;
1481 if (!init_guest_info()) {
1482 DEBUG(0,("ERROR: failed to setup guest info.\n"));
1483 return -1;
1486 if (!file_init_global()) {
1487 DEBUG(0, ("ERROR: file_init_global() failed\n"));
1488 return -1;
1490 status = smbXsrv_open_global_init();
1491 if (!NT_STATUS_IS_OK(status)) {
1492 exit_daemon("Samba cannot init global open", map_errno_from_nt_status(status));
1495 /* This MUST be done before start_epmd() because otherwise
1496 * start_epmd() forks and races against dcesrv_ep_setup() to
1497 * call directory_create_or_exist() */
1498 if (!directory_create_or_exist(lp_ncalrpc_dir(), geteuid(), 0755)) {
1499 DEBUG(0, ("Failed to create pipe directory %s - %s\n",
1500 lp_ncalrpc_dir(), strerror(errno)));
1501 return -1;
1504 np_dir = talloc_asprintf(talloc_tos(), "%s/np", lp_ncalrpc_dir());
1505 if (!np_dir) {
1506 DEBUG(0, ("%s: Out of memory\n", __location__));
1507 return -1;
1510 if (!directory_create_or_exist_strict(np_dir, geteuid(), 0700)) {
1511 DEBUG(0, ("Failed to create pipe directory %s - %s\n",
1512 np_dir, strerror(errno)));
1513 return -1;
1516 if (is_daemon && !interactive) {
1517 if (rpc_epmapper_daemon() == RPC_DAEMON_FORK) {
1518 start_epmd(ev_ctx, msg_ctx);
1522 if (!dcesrv_ep_setup(ev_ctx, msg_ctx)) {
1523 exit_daemon("Samba cannot setup ep pipe", EACCES);
1526 if (is_daemon && !interactive) {
1527 daemon_ready("smbd");
1530 /* only start other daemons if we are running as a daemon
1531 * -- bad things will happen if smbd is launched via inetd
1532 * and we fork a copy of ourselves here */
1533 if (is_daemon && !interactive) {
1535 if (rpc_lsasd_daemon() == RPC_DAEMON_FORK) {
1536 start_lsasd(ev_ctx, msg_ctx);
1539 if (!lp__disable_spoolss() &&
1540 (rpc_spoolss_daemon() != RPC_DAEMON_DISABLED)) {
1541 bool bgq = lp_parm_bool(-1, "smbd", "backgroundqueue", true);
1543 if (!printing_subsystem_init(ev_ctx, msg_ctx, true, bgq)) {
1544 exit_daemon("Samba failed to init printing subsystem", EACCES);
1547 } else if (!lp__disable_spoolss() &&
1548 (rpc_spoolss_daemon() != RPC_DAEMON_DISABLED)) {
1549 if (!printing_subsystem_init(ev_ctx, msg_ctx, false, false)) {
1550 exit(1);
1554 if (!is_daemon) {
1555 int sock;
1557 /* inetd mode */
1558 TALLOC_FREE(frame);
1560 /* Started from inetd. fd 0 is the socket. */
1561 /* We will abort gracefully when the client or remote system
1562 goes away */
1563 sock = dup(0);
1565 /* close stdin, stdout (if not logging to it), but not stderr */
1566 close_low_fds(true, !debug_get_output_is_stdout(), false);
1568 #ifdef HAVE_ATEXIT
1569 atexit(killkids);
1570 #endif
1572 /* Stop zombies */
1573 smbd_setup_sig_chld_handler(parent);
1575 smbd_process(ev_ctx, msg_ctx, sock, true);
1577 exit_server_cleanly(NULL);
1578 return(0);
1581 if (!open_sockets_smbd(parent, ev_ctx, msg_ctx, ports))
1582 exit_server("open_sockets_smbd() failed");
1584 /* do a printer update now that all messaging has been set up,
1585 * before we allow clients to start connecting */
1586 if (!lp__disable_spoolss() &&
1587 (rpc_spoolss_daemon() != RPC_DAEMON_DISABLED)) {
1588 printing_subsystem_update(ev_ctx, msg_ctx, false);
1591 TALLOC_FREE(frame);
1592 /* make sure we always have a valid stackframe */
1593 frame = talloc_stackframe();
1595 if (!Fork) {
1596 /* if we are running in the foreground then look for
1597 EOF on stdin, and exit if it happens. This allows
1598 us to die if the parent process dies
1599 Only do this on a pipe or socket, no other device.
1601 struct stat st;
1602 if (fstat(0, &st) != 0) {
1603 return false;
1605 if (S_ISFIFO(st.st_mode) || S_ISSOCK(st.st_mode)) {
1606 tevent_add_fd(ev_ctx,
1607 parent,
1609 TEVENT_FD_READ,
1610 smbd_stdin_handler,
1611 NULL);
1615 smbd_parent_loop(ev_ctx, parent);
1617 exit_server_cleanly(NULL);
1618 TALLOC_FREE(frame);
1619 return(0);