s3-waf: Set HAVE_GSSAPI if gssapi libs were found
[Samba/gebeck_regimport.git] / source3 / smbd / server.c
blob184b613810d939f349a5d43c0b12316433eafbb9
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 "smbd/globals.h"
26 #include "librpc/gen_ndr/messaging.h"
27 #include "registry.h"
29 static_decl_rpc;
31 #ifdef WITH_DFS
32 extern int dcelogin_atmost_once;
33 #endif /* WITH_DFS */
35 int smbd_server_fd(void)
37 return server_fd;
40 static void smbd_set_server_fd(int fd)
42 server_fd = fd;
45 int get_client_fd(void)
47 return server_fd;
50 struct event_context *smbd_event_context(void)
52 if (!smbd_event_ctx) {
53 smbd_event_ctx = event_context_init(talloc_autofree_context());
55 if (!smbd_event_ctx) {
56 smb_panic("Could not init smbd event context");
58 return smbd_event_ctx;
61 /*******************************************************************
62 What to do when smb.conf is updated.
63 ********************************************************************/
65 static void smb_conf_updated(struct messaging_context *msg,
66 void *private_data,
67 uint32_t msg_type,
68 struct server_id server_id,
69 DATA_BLOB *data)
71 DEBUG(10,("smb_conf_updated: Got message saying smb.conf was "
72 "updated. Reloading.\n"));
73 change_to_root_user();
74 reload_services(False);
78 /*******************************************************************
79 Delete a statcache entry.
80 ********************************************************************/
82 static void smb_stat_cache_delete(struct messaging_context *msg,
83 void *private_data,
84 uint32_t msg_tnype,
85 struct server_id server_id,
86 DATA_BLOB *data)
88 const char *name = (const char *)data->data;
89 DEBUG(10,("smb_stat_cache_delete: delete name %s\n", name));
90 stat_cache_delete(name);
93 /****************************************************************************
94 Send a SIGTERM to our process group.
95 *****************************************************************************/
97 static void killkids(void)
99 if(am_parent) kill(0,SIGTERM);
102 /****************************************************************************
103 Process a sam sync message - not sure whether to do this here or
104 somewhere else.
105 ****************************************************************************/
107 static void msg_sam_sync(struct messaging_context *msg,
108 void *private_data,
109 uint32_t msg_type,
110 struct server_id server_id,
111 DATA_BLOB *data)
113 DEBUG(10, ("** sam sync message received, ignoring\n"));
116 static void msg_exit_server(struct messaging_context *msg,
117 void *private_data,
118 uint32_t msg_type,
119 struct server_id server_id,
120 DATA_BLOB *data)
122 DEBUG(3, ("got a SHUTDOWN message\n"));
123 exit_server_cleanly(NULL);
126 #ifdef DEVELOPER
127 static void msg_inject_fault(struct messaging_context *msg,
128 void *private_data,
129 uint32_t msg_type,
130 struct server_id src,
131 DATA_BLOB *data)
133 int sig;
135 if (data->length != sizeof(sig)) {
136 DEBUG(0, ("Process %s sent bogus signal injection request\n",
137 procid_str_static(&src)));
138 return;
141 sig = *(int *)data->data;
142 if (sig == -1) {
143 exit_server("internal error injected");
144 return;
147 #if HAVE_STRSIGNAL
148 DEBUG(0, ("Process %s requested injection of signal %d (%s)\n",
149 procid_str_static(&src), sig, strsignal(sig)));
150 #else
151 DEBUG(0, ("Process %s requested injection of signal %d\n",
152 procid_str_static(&src), sig));
153 #endif
155 kill(sys_getpid(), sig);
157 #endif /* DEVELOPER */
160 * Parent smbd process sets its own debug level first and then
161 * sends a message to all the smbd children to adjust their debug
162 * level to that of the parent.
165 static void smbd_msg_debug(struct messaging_context *msg_ctx,
166 void *private_data,
167 uint32_t msg_type,
168 struct server_id server_id,
169 DATA_BLOB *data)
171 struct child_pid *child;
173 debug_message(msg_ctx, private_data, MSG_DEBUG, server_id, data);
175 for (child = children; child != NULL; child = child->next) {
176 messaging_send_buf(msg_ctx, pid_to_procid(child->pid),
177 MSG_DEBUG,
178 data->data,
179 strlen((char *) data->data) + 1);
183 static void add_child_pid(pid_t pid)
185 struct child_pid *child;
187 child = SMB_MALLOC_P(struct child_pid);
188 if (child == NULL) {
189 DEBUG(0, ("Could not add child struct -- malloc failed\n"));
190 return;
192 child->pid = pid;
193 DLIST_ADD(children, child);
194 num_children += 1;
198 at most every smbd:cleanuptime seconds (default 20), we scan the BRL
199 and locking database for entries to cleanup. As a side effect this
200 also cleans up dead entries in the connections database (due to the
201 traversal in message_send_all()
203 Using a timer for this prevents a flood of traversals when a large
204 number of clients disconnect at the same time (perhaps due to a
205 network outage).
208 static void cleanup_timeout_fn(struct event_context *event_ctx,
209 struct timed_event *te,
210 struct timeval now,
211 void *private_data)
213 struct timed_event **cleanup_te = (struct timed_event **)private_data;
215 DEBUG(1,("Cleaning up brl and lock database after unclean shutdown\n"));
216 message_send_all(smbd_messaging_context(), MSG_SMB_UNLOCK, NULL, 0, NULL);
217 messaging_send_buf(smbd_messaging_context(), procid_self(),
218 MSG_SMB_BRL_VALIDATE, NULL, 0);
219 /* mark the cleanup as having been done */
220 (*cleanup_te) = NULL;
223 static void remove_child_pid(pid_t pid, bool unclean_shutdown)
225 struct child_pid *child;
226 static struct timed_event *cleanup_te;
227 struct server_id child_id;
229 if (unclean_shutdown) {
230 /* a child terminated uncleanly so tickle all
231 processes to see if they can grab any of the
232 pending locks
234 DEBUG(3,(__location__ " Unclean shutdown of pid %u\n",
235 (unsigned int)pid));
236 if (!cleanup_te) {
237 /* call the cleanup timer, but not too often */
238 int cleanup_time = lp_parm_int(-1, "smbd", "cleanuptime", 20);
239 cleanup_te = event_add_timed(smbd_event_context(), NULL,
240 timeval_current_ofs(cleanup_time, 0),
241 cleanup_timeout_fn,
242 &cleanup_te);
243 DEBUG(1,("Scheduled cleanup of brl and lock database after unclean shutdown\n"));
247 child_id = procid_self(); /* Just initialize pid and potentially vnn */
248 child_id.pid = pid;
250 if (!serverid_deregister(&child_id)) {
251 DEBUG(1, ("Could not remove pid %d from serverid.tdb\n",
252 (int)pid));
255 for (child = children; child != NULL; child = child->next) {
256 if (child->pid == pid) {
257 struct child_pid *tmp = child;
258 DLIST_REMOVE(children, child);
259 SAFE_FREE(tmp);
260 num_children -= 1;
261 return;
265 DEBUG(0, ("Could not find child %d -- ignoring\n", (int)pid));
268 /****************************************************************************
269 Have we reached the process limit ?
270 ****************************************************************************/
272 static bool allowable_number_of_smbd_processes(void)
274 int max_processes = lp_max_smbd_processes();
276 if (!max_processes)
277 return True;
279 return num_children < max_processes;
282 static void smbd_sig_chld_handler(struct tevent_context *ev,
283 struct tevent_signal *se,
284 int signum,
285 int count,
286 void *siginfo,
287 void *private_data)
289 pid_t pid;
290 int status;
292 while ((pid = sys_waitpid(-1, &status, WNOHANG)) > 0) {
293 bool unclean_shutdown = False;
295 /* If the child terminated normally, assume
296 it was an unclean shutdown unless the
297 status is 0
299 if (WIFEXITED(status)) {
300 unclean_shutdown = WEXITSTATUS(status);
302 /* If the child terminated due to a signal
303 we always assume it was unclean.
305 if (WIFSIGNALED(status)) {
306 unclean_shutdown = True;
308 remove_child_pid(pid, unclean_shutdown);
312 static void smbd_setup_sig_chld_handler(void)
314 struct tevent_signal *se;
316 se = tevent_add_signal(smbd_event_context(),
317 smbd_event_context(),
318 SIGCHLD, 0,
319 smbd_sig_chld_handler,
320 NULL);
321 if (!se) {
322 exit_server("failed to setup SIGCHLD handler");
326 struct smbd_open_socket;
328 struct smbd_parent_context {
329 bool interactive;
331 /* the list of listening sockets */
332 struct smbd_open_socket *sockets;
335 struct smbd_open_socket {
336 struct smbd_open_socket *prev, *next;
337 struct smbd_parent_context *parent;
338 int fd;
339 struct tevent_fd *fde;
342 static void smbd_open_socket_close_fn(struct tevent_context *ev,
343 struct tevent_fd *fde,
344 int fd,
345 void *private_data)
347 /* this might be the socket_wrapper swrap_close() */
348 close(fd);
351 static void smbd_accept_connection(struct tevent_context *ev,
352 struct tevent_fd *fde,
353 uint16_t flags,
354 void *private_data)
356 struct smbd_open_socket *s = talloc_get_type_abort(private_data,
357 struct smbd_open_socket);
358 struct sockaddr_storage addr;
359 socklen_t in_addrlen = sizeof(addr);
360 pid_t pid = 0;
361 uint64_t unique_id;
363 smbd_set_server_fd(accept(s->fd,(struct sockaddr *)&addr,&in_addrlen));
365 if (smbd_server_fd() == -1 && errno == EINTR)
366 return;
368 if (smbd_server_fd() == -1) {
369 DEBUG(0,("open_sockets_smbd: accept: %s\n",
370 strerror(errno)));
371 return;
374 if (s->parent->interactive) {
375 smbd_process();
376 exit_server_cleanly("end of interactive mode");
377 return;
380 if (!allowable_number_of_smbd_processes()) {
381 close(smbd_server_fd());
382 smbd_set_server_fd(-1);
383 return;
387 * Generate a unique id in the parent process so that we use
388 * the global random state in the parent.
390 generate_random_buffer((uint8_t *)&unique_id, sizeof(unique_id));
392 pid = sys_fork();
393 if (pid == 0) {
394 NTSTATUS status = NT_STATUS_OK;
396 /* Child code ... */
397 am_parent = 0;
399 set_my_unique_id(unique_id);
401 /* Stop zombies, the parent explicitly handles
402 * them, counting worker smbds. */
403 CatchChild();
405 /* close our standard file
406 descriptors */
407 close_low_fds(False);
410 * Can't use TALLOC_FREE here. Nulling out the argument to it
411 * would overwrite memory we've just freed.
413 talloc_free(s->parent);
414 s = NULL;
416 status = reinit_after_fork(smbd_messaging_context(),
417 smbd_event_context(), true);
418 if (!NT_STATUS_IS_OK(status)) {
419 if (NT_STATUS_EQUAL(status,
420 NT_STATUS_TOO_MANY_OPENED_FILES)) {
421 DEBUG(0,("child process cannot initialize "
422 "because too many files are open\n"));
423 goto exit;
425 DEBUG(0,("reinit_after_fork() failed\n"));
426 smb_panic("reinit_after_fork() failed");
429 smbd_setup_sig_term_handler();
430 smbd_setup_sig_hup_handler();
432 if (!serverid_register_self(FLAG_MSG_GENERAL|FLAG_MSG_SMBD
433 |FLAG_MSG_DBWRAP
434 |FLAG_MSG_PRINT_GENERAL)) {
435 exit_server_cleanly("Could not register myself in "
436 "serverid.tdb");
439 smbd_process();
440 exit:
441 exit_server_cleanly("end of child");
442 return;
443 } else if (pid < 0) {
444 DEBUG(0,("smbd_accept_connection: sys_fork() failed: %s\n",
445 strerror(errno)));
448 /* The parent doesn't need this socket */
449 close(smbd_server_fd());
451 /* Sun May 6 18:56:14 2001 ackley@cs.unm.edu:
452 Clear the closed fd info out of server_fd --
453 and more importantly, out of client_fd in
454 util_sock.c, to avoid a possible
455 getpeername failure if we reopen the logs
456 and use %I in the filename.
459 smbd_set_server_fd(-1);
461 if (pid != 0) {
462 add_child_pid(pid);
465 /* Force parent to check log size after
466 * spawning child. Fix from
467 * klausr@ITAP.Physik.Uni-Stuttgart.De. The
468 * parent smbd will log to logserver.smb. It
469 * writes only two messages for each child
470 * started/finished. But each child writes,
471 * say, 50 messages also in logserver.smb,
472 * begining with the debug_count of the
473 * parent, before the child opens its own log
474 * file logserver.client. In a worst case
475 * scenario the size of logserver.smb would be
476 * checked after about 50*50=2500 messages
477 * (ca. 100kb).
478 * */
479 force_check_log_size();
482 static bool smbd_open_one_socket(struct smbd_parent_context *parent,
483 const struct sockaddr_storage *ifss,
484 uint16_t port)
486 struct smbd_open_socket *s;
488 s = talloc(parent, struct smbd_open_socket);
489 if (!s) {
490 return false;
493 s->parent = parent;
494 s->fd = open_socket_in(SOCK_STREAM,
495 port,
496 parent->sockets == NULL ? 0 : 2,
497 ifss,
498 true);
499 if (s->fd == -1) {
500 DEBUG(0,("smbd_open_once_socket: open_socket_in: "
501 "%s\n", strerror(errno)));
502 TALLOC_FREE(s);
504 * We ignore an error here, as we've done before
506 return true;
509 /* ready to listen */
510 set_socket_options(s->fd, "SO_KEEPALIVE");
511 set_socket_options(s->fd, lp_socket_options());
513 /* Set server socket to
514 * non-blocking for the accept. */
515 set_blocking(s->fd, False);
517 if (listen(s->fd, SMBD_LISTEN_BACKLOG) == -1) {
518 DEBUG(0,("open_sockets_smbd: listen: "
519 "%s\n", strerror(errno)));
520 close(s->fd);
521 TALLOC_FREE(s);
522 return false;
525 s->fde = tevent_add_fd(smbd_event_context(),
527 s->fd, TEVENT_FD_READ,
528 smbd_accept_connection,
530 if (!s->fde) {
531 DEBUG(0,("open_sockets_smbd: "
532 "tevent_add_fd: %s\n",
533 strerror(errno)));
534 close(s->fd);
535 TALLOC_FREE(s);
536 return false;
538 tevent_fd_set_close_fn(s->fde, smbd_open_socket_close_fn);
540 DLIST_ADD_END(parent->sockets, s, struct smbd_open_socket *);
542 return true;
545 /****************************************************************************
546 Open the socket communication.
547 ****************************************************************************/
549 static bool open_sockets_smbd(struct smbd_parent_context *parent,
550 const char *smb_ports)
552 int num_interfaces = iface_count();
553 int i;
554 char *ports;
555 unsigned dns_port = 0;
557 #ifdef HAVE_ATEXIT
558 atexit(killkids);
559 #endif
561 /* Stop zombies */
562 smbd_setup_sig_chld_handler();
564 /* use a reasonable default set of ports - listing on 445 and 139 */
565 if (!smb_ports) {
566 ports = lp_smb_ports();
567 if (!ports || !*ports) {
568 ports = talloc_strdup(talloc_tos(), SMB_PORTS);
569 } else {
570 ports = talloc_strdup(talloc_tos(), ports);
572 } else {
573 ports = talloc_strdup(talloc_tos(), smb_ports);
576 if (lp_interfaces() && lp_bind_interfaces_only()) {
577 /* We have been given an interfaces line, and been
578 told to only bind to those interfaces. Create a
579 socket per interface and bind to only these.
582 /* Now open a listen socket for each of the
583 interfaces. */
584 for(i = 0; i < num_interfaces; i++) {
585 const struct sockaddr_storage *ifss =
586 iface_n_sockaddr_storage(i);
587 char *tok;
588 const char *ptr;
590 if (ifss == NULL) {
591 DEBUG(0,("open_sockets_smbd: "
592 "interface %d has NULL IP address !\n",
593 i));
594 continue;
597 for (ptr=ports;
598 next_token_talloc(talloc_tos(),&ptr, &tok, " \t,");) {
599 unsigned port = atoi(tok);
600 if (port == 0 || port > 0xffff) {
601 continue;
604 if (!smbd_open_one_socket(parent, ifss, port)) {
605 return false;
609 } else {
610 /* Just bind to 0.0.0.0 - accept connections
611 from anywhere. */
613 char *tok;
614 const char *ptr;
615 const char *sock_addr = lp_socket_address();
616 char *sock_tok;
617 const char *sock_ptr;
619 if (strequal(sock_addr, "0.0.0.0") ||
620 strequal(sock_addr, "::")) {
621 #if HAVE_IPV6
622 sock_addr = "::,0.0.0.0";
623 #else
624 sock_addr = "0.0.0.0";
625 #endif
628 for (sock_ptr=sock_addr;
629 next_token_talloc(talloc_tos(), &sock_ptr, &sock_tok, " \t,"); ) {
630 for (ptr=ports; next_token_talloc(talloc_tos(), &ptr, &tok, " \t,"); ) {
631 struct sockaddr_storage ss;
633 unsigned port = atoi(tok);
634 if (port == 0 || port > 0xffff) {
635 continue;
638 /* Keep the first port for mDNS service
639 * registration.
641 if (dns_port == 0) {
642 dns_port = port;
645 /* open an incoming socket */
646 if (!interpret_string_addr(&ss, sock_tok,
647 AI_NUMERICHOST|AI_PASSIVE)) {
648 continue;
651 if (!smbd_open_one_socket(parent, &ss, port)) {
652 return false;
658 if (parent->sockets == NULL) {
659 DEBUG(0,("open_sockets_smbd: No "
660 "sockets available to bind to.\n"));
661 return false;
664 /* Setup the main smbd so that we can get messages. Note that
665 do this after starting listening. This is needed as when in
666 clustered mode, ctdb won't allow us to start doing database
667 operations until it has gone thru a full startup, which
668 includes checking to see that smbd is listening. */
670 if (!serverid_register_self(FLAG_MSG_GENERAL|FLAG_MSG_SMBD
671 |FLAG_MSG_DBWRAP)) {
672 DEBUG(0, ("open_sockets_smbd: Failed to register "
673 "myself in serverid.tdb\n"));
674 return false;
677 /* Listen to messages */
679 messaging_register(smbd_messaging_context(), NULL,
680 MSG_SMB_SAM_SYNC, msg_sam_sync);
681 messaging_register(smbd_messaging_context(), NULL,
682 MSG_SHUTDOWN, msg_exit_server);
683 messaging_register(smbd_messaging_context(), NULL,
684 MSG_SMB_FILE_RENAME, msg_file_was_renamed);
685 messaging_register(smbd_messaging_context(), NULL,
686 MSG_SMB_CONF_UPDATED, smb_conf_updated);
687 messaging_register(smbd_messaging_context(), NULL,
688 MSG_SMB_STAT_CACHE_DELETE, smb_stat_cache_delete);
689 messaging_register(smbd_messaging_context(), NULL,
690 MSG_DEBUG, smbd_msg_debug);
691 brl_register_msgs(smbd_messaging_context());
693 #ifdef CLUSTER_SUPPORT
694 if (lp_clustering()) {
695 ctdbd_register_reconfigure(messaging_ctdbd_connection());
697 #endif
699 #ifdef DEVELOPER
700 messaging_register(smbd_messaging_context(), NULL,
701 MSG_SMB_INJECT_FAULT, msg_inject_fault);
702 #endif
704 if (dns_port != 0) {
705 #ifdef WITH_DNSSD_SUPPORT
706 smbd_setup_mdns_registration(smbd_event_context(),
707 parent, dns_port);
708 #endif
709 #ifdef WITH_AVAHI_SUPPORT
710 void *avahi_conn;
712 avahi_conn = avahi_start_register(
713 smbd_event_context(), smbd_event_context(), dns_port);
714 if (avahi_conn == NULL) {
715 DEBUG(10, ("avahi_start_register failed\n"));
717 #endif
720 return true;
723 static void smbd_parent_loop(struct smbd_parent_context *parent)
725 /* now accept incoming connections - forking a new process
726 for each incoming connection */
727 DEBUG(2,("waiting for connections\n"));
728 while (1) {
729 int ret;
730 TALLOC_CTX *frame = talloc_stackframe();
732 ret = tevent_loop_once(smbd_event_context());
733 if (ret != 0) {
734 exit_server_cleanly("tevent_loop_once() error");
737 TALLOC_FREE(frame);
738 } /* end while 1 */
740 /* NOTREACHED return True; */
744 /****************************************************************************
745 Initialise connect, service and file structs.
746 ****************************************************************************/
748 static bool init_structs(void )
751 * Set the machine NETBIOS name if not already
752 * set from the config file.
755 if (!init_names())
756 return False;
758 file_init();
760 if (!secrets_init())
761 return False;
763 return True;
766 /****************************************************************************
767 main program.
768 ****************************************************************************/
770 /* Declare prototype for build_options() to avoid having to run it through
771 mkproto.h. Mixing $(builddir) and $(srcdir) source files in the current
772 prototype generation system is too complicated. */
774 extern void build_options(bool screen);
776 int main(int argc,const char *argv[])
778 /* shall I run as a daemon */
779 bool is_daemon = false;
780 bool interactive = false;
781 bool Fork = true;
782 bool no_process_group = false;
783 bool log_stdout = false;
784 char *ports = NULL;
785 char *profile_level = NULL;
786 int opt;
787 poptContext pc;
788 bool print_build_options = False;
789 enum {
790 OPT_DAEMON = 1000,
791 OPT_INTERACTIVE,
792 OPT_FORK,
793 OPT_NO_PROCESS_GROUP,
794 OPT_LOG_STDOUT
796 struct poptOption long_options[] = {
797 POPT_AUTOHELP
798 {"daemon", 'D', POPT_ARG_NONE, NULL, OPT_DAEMON, "Become a daemon (default)" },
799 {"interactive", 'i', POPT_ARG_NONE, NULL, OPT_INTERACTIVE, "Run interactive (not a daemon)"},
800 {"foreground", 'F', POPT_ARG_NONE, NULL, OPT_FORK, "Run daemon in foreground (for daemontools, etc.)" },
801 {"no-process-group", '\0', POPT_ARG_NONE, NULL, OPT_NO_PROCESS_GROUP, "Don't create a new process group" },
802 {"log-stdout", 'S', POPT_ARG_NONE, NULL, OPT_LOG_STDOUT, "Log to stdout" },
803 {"build-options", 'b', POPT_ARG_NONE, NULL, 'b', "Print build options" },
804 {"port", 'p', POPT_ARG_STRING, &ports, 0, "Listen on the specified ports"},
805 {"profiling-level", 'P', POPT_ARG_STRING, &profile_level, 0, "Set profiling level","PROFILE_LEVEL"},
806 POPT_COMMON_SAMBA
807 POPT_COMMON_DYNCONFIG
808 POPT_TABLEEND
810 struct smbd_parent_context *parent = NULL;
811 TALLOC_CTX *frame = talloc_stackframe(); /* Setup tos. */
813 smbd_init_globals();
815 TimeInit();
817 #ifdef HAVE_SET_AUTH_PARAMETERS
818 set_auth_parameters(argc,argv);
819 #endif
821 pc = poptGetContext("smbd", argc, argv, long_options, 0);
822 while((opt = poptGetNextOpt(pc)) != -1) {
823 switch (opt) {
824 case OPT_DAEMON:
825 is_daemon = true;
826 break;
827 case OPT_INTERACTIVE:
828 interactive = true;
829 break;
830 case OPT_FORK:
831 Fork = false;
832 break;
833 case OPT_NO_PROCESS_GROUP:
834 no_process_group = true;
835 break;
836 case OPT_LOG_STDOUT:
837 log_stdout = true;
838 break;
839 case 'b':
840 print_build_options = True;
841 break;
842 default:
843 d_fprintf(stderr, "\nInvalid option %s: %s\n\n",
844 poptBadOption(pc, 0), poptStrerror(opt));
845 poptPrintUsage(pc, stderr, 0);
846 exit(1);
849 poptFreeContext(pc);
851 if (interactive) {
852 Fork = False;
853 log_stdout = True;
856 setup_logging(argv[0],log_stdout);
858 if (print_build_options) {
859 build_options(True); /* Display output to screen as well as debug */
860 exit(0);
863 load_case_tables();
865 #ifdef HAVE_SETLUID
866 /* needed for SecureWare on SCO */
867 setluid(0);
868 #endif
870 sec_init();
872 set_remote_machine_name("smbd", False);
874 if (interactive && (DEBUGLEVEL >= 9)) {
875 talloc_enable_leak_report();
878 if (log_stdout && Fork) {
879 DEBUG(0,("ERROR: Can't log to stdout (-S) unless daemon is in foreground (-F) or interactive (-i)\n"));
880 exit(1);
883 /* we want to re-seed early to prevent time delays causing
884 client problems at a later date. (tridge) */
885 generate_random_buffer(NULL, 0);
887 /* make absolutely sure we run as root - to handle cases where people
888 are crazy enough to have it setuid */
890 gain_root_privilege();
891 gain_root_group_privilege();
893 fault_setup((void (*)(void *))exit_server_fault);
894 dump_core_setup("smbd");
896 /* we are never interested in SIGPIPE */
897 BlockSignals(True,SIGPIPE);
899 #if defined(SIGFPE)
900 /* we are never interested in SIGFPE */
901 BlockSignals(True,SIGFPE);
902 #endif
904 #if defined(SIGUSR2)
905 /* We are no longer interested in USR2 */
906 BlockSignals(True,SIGUSR2);
907 #endif
909 /* POSIX demands that signals are inherited. If the invoking process has
910 * these signals masked, we will have problems, as we won't recieve them. */
911 BlockSignals(False, SIGHUP);
912 BlockSignals(False, SIGUSR1);
913 BlockSignals(False, SIGTERM);
915 /* Ensure we leave no zombies until we
916 * correctly set up child handling below. */
918 CatchChild();
920 /* we want total control over the permissions on created files,
921 so set our umask to 0 */
922 umask(0);
924 init_sec_ctx();
926 reopen_logs();
928 DEBUG(0,("smbd version %s started.\n", samba_version_string()));
929 DEBUGADD(0,("%s\n", COPYRIGHT_STARTUP_MESSAGE));
931 DEBUG(2,("uid=%d gid=%d euid=%d egid=%d\n",
932 (int)getuid(),(int)getgid(),(int)geteuid(),(int)getegid()));
934 /* Output the build options to the debug log */
935 build_options(False);
937 if (sizeof(uint16) < 2 || sizeof(uint32) < 4) {
938 DEBUG(0,("ERROR: Samba is not configured correctly for the word size on your machine\n"));
939 exit(1);
942 if (!lp_load_initial_only(get_dyn_CONFIGFILE())) {
943 DEBUG(0, ("error opening config file\n"));
944 exit(1);
947 if (smbd_messaging_context() == NULL)
948 exit(1);
950 if (!reload_services(False))
951 return(-1);
953 init_structs();
955 #ifdef WITH_PROFILE
956 if (!profile_setup(smbd_messaging_context(), False)) {
957 DEBUG(0,("ERROR: failed to setup profiling\n"));
958 return -1;
960 if (profile_level != NULL) {
961 int pl = atoi(profile_level);
962 struct server_id src;
964 DEBUG(1, ("setting profiling level: %s\n",profile_level));
965 src.pid = getpid();
966 set_profile_level(pl, src);
968 #endif
970 DEBUG(3,( "loaded services\n"));
972 if (!is_daemon && !is_a_socket(0)) {
973 if (!interactive)
974 DEBUG(0,("standard input is not a socket, assuming -D option\n"));
977 * Setting is_daemon here prevents us from eventually calling
978 * the open_sockets_inetd()
981 is_daemon = True;
984 if (is_daemon && !interactive) {
985 DEBUG( 3, ( "Becoming a daemon.\n" ) );
986 become_daemon(Fork, no_process_group, log_stdout);
989 #if HAVE_SETPGID
991 * If we're interactive we want to set our own process group for
992 * signal management.
994 if (interactive && !no_process_group)
995 setpgid( (pid_t)0, (pid_t)0);
996 #endif
998 if (!directory_exist(lp_lockdir()))
999 mkdir(lp_lockdir(), 0755);
1001 if (is_daemon)
1002 pidfile_create("smbd");
1004 if (!NT_STATUS_IS_OK(reinit_after_fork(smbd_messaging_context(),
1005 smbd_event_context(), false))) {
1006 DEBUG(0,("reinit_after_fork() failed\n"));
1007 exit(1);
1010 smbd_setup_sig_term_handler();
1011 smbd_setup_sig_hup_handler();
1013 /* Setup all the TDB's - including CLEAR_IF_FIRST tdb's. */
1015 if (smbd_memcache() == NULL) {
1016 exit(1);
1019 memcache_set_global(smbd_memcache());
1021 /* Initialise the password backed before the global_sam_sid
1022 to ensure that we fetch from ldap before we make a domain sid up */
1024 if(!initialize_password_db(False, smbd_event_context()))
1025 exit(1);
1027 if (!secrets_init()) {
1028 DEBUG(0, ("ERROR: smbd can not open secrets.tdb\n"));
1029 exit(1);
1032 if(!get_global_sam_sid()) {
1033 DEBUG(0,("ERROR: Samba cannot create a SAM SID.\n"));
1034 exit(1);
1037 if (!sessionid_init()) {
1038 exit(1);
1041 if (!connections_init(True))
1042 exit(1);
1044 if (!locking_init())
1045 exit(1);
1047 if (!messaging_tdb_parent_init()) {
1048 exit(1);
1051 if (!notify_internal_parent_init()) {
1052 exit(1);
1055 if (!serverid_parent_init()) {
1056 exit(1);
1059 if (!W_ERROR_IS_OK(registry_init_full()))
1060 exit(1);
1062 #if 0
1063 if (!init_svcctl_db())
1064 exit(1);
1065 #endif
1067 if (!init_system_info()) {
1068 DEBUG(0,("ERROR: failed to setup system user info.\n"));
1069 return -1;
1072 if (!print_backend_init(smbd_messaging_context()))
1073 exit(1);
1075 if (!init_guest_info()) {
1076 DEBUG(0,("ERROR: failed to setup guest info.\n"));
1077 return -1;
1080 /* Open the share_info.tdb here, so we don't have to open
1081 after the fork on every single connection. This is a small
1082 performance improvment and reduces the total number of system
1083 fds used. */
1084 if (!share_info_db_init()) {
1085 DEBUG(0,("ERROR: failed to load share info db.\n"));
1086 exit(1);
1089 /* only start the background queue daemon if we are
1090 running as a daemon -- bad things will happen if
1091 smbd is launched via inetd and we fork a copy of
1092 ourselves here */
1094 if (is_daemon && !interactive
1095 && lp_parm_bool(-1, "smbd", "backgroundqueue", true)) {
1096 start_background_queue();
1099 if (!is_daemon) {
1100 /* inetd mode */
1101 TALLOC_FREE(frame);
1103 /* Started from inetd. fd 0 is the socket. */
1104 /* We will abort gracefully when the client or remote system
1105 goes away */
1106 smbd_set_server_fd(dup(0));
1108 /* close our standard file descriptors */
1109 close_low_fds(False); /* Don't close stderr */
1111 #ifdef HAVE_ATEXIT
1112 atexit(killkids);
1113 #endif
1115 /* Stop zombies */
1116 smbd_setup_sig_chld_handler();
1118 smbd_process();
1120 exit_server_cleanly(NULL);
1121 return(0);
1124 parent = talloc_zero(smbd_event_context(), struct smbd_parent_context);
1125 if (!parent) {
1126 exit_server("talloc(struct smbd_parent_context) failed");
1128 parent->interactive = interactive;
1130 if (!open_sockets_smbd(parent, ports))
1131 exit_server("open_sockets_smbd() failed");
1133 TALLOC_FREE(frame);
1134 /* make sure we always have a valid stackframe */
1135 frame = talloc_stackframe();
1137 smbd_parent_loop(parent);
1139 exit_server_cleanly(NULL);
1140 TALLOC_FREE(frame);
1141 return(0);