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/>.
28 static int am_parent = 1;
30 extern struct auth_context *negprot_global_auth_context;
31 extern SIG_ATOMIC_T got_sig_term;
32 extern SIG_ATOMIC_T reload_after_sighup;
33 static SIG_ATOMIC_T got_sig_cld;
36 extern int dcelogin_atmost_once;
39 /* really we should have a top level context structure that has the
40 client file descriptor as an element. That would require a major rewrite :(
42 the following 2 functions are an alternative - they make the file
43 descriptor private to smbd
45 static int server_fd = -1;
47 int smbd_server_fd(void)
52 static void smbd_set_server_fd(int fd)
57 int get_client_fd(void)
62 static int client_get_tcp_info(struct sockaddr_storage *server,
63 struct sockaddr_storage *client)
66 if (server_fd == -1) {
69 length = sizeof(*server);
70 if (getsockname(server_fd, (struct sockaddr *)server, &length) != 0) {
73 length = sizeof(*client);
74 if (getpeername(server_fd, (struct sockaddr *)client, &length) != 0) {
80 struct event_context *smbd_event_context(void)
82 static struct event_context *ctx;
84 if (!ctx && !(ctx = event_context_init(NULL))) {
85 smb_panic("Could not init smbd event context");
90 struct messaging_context *smbd_messaging_context(void)
92 static struct messaging_context *ctx;
95 ctx = messaging_init(NULL, server_id_self(),
96 smbd_event_context());
99 DEBUG(0, ("Could not init smbd messaging context.\n"));
104 struct memcache *smbd_memcache(void)
106 static struct memcache *cache;
109 && !(cache = memcache_init(NULL,
110 lp_max_stat_cache_size()*1024))) {
112 smb_panic("Could not init smbd memcache");
117 /*******************************************************************
118 What to do when smb.conf is updated.
119 ********************************************************************/
121 static void smb_conf_updated(struct messaging_context *msg,
124 struct server_id server_id,
127 DEBUG(10,("smb_conf_updated: Got message saying smb.conf was "
128 "updated. Reloading.\n"));
129 reload_services(False);
133 /*******************************************************************
134 Delete a statcache entry.
135 ********************************************************************/
137 static void smb_stat_cache_delete(struct messaging_context *msg,
140 struct server_id server_id,
143 const char *name = (const char *)data->data;
144 DEBUG(10,("smb_stat_cache_delete: delete name %s\n", name));
145 stat_cache_delete(name);
148 /****************************************************************************
150 ****************************************************************************/
152 static void sig_term(void)
155 sys_select_signal(SIGTERM);
158 /****************************************************************************
160 ****************************************************************************/
162 static void sig_hup(int sig)
164 reload_after_sighup = 1;
165 sys_select_signal(SIGHUP);
168 /****************************************************************************
170 ****************************************************************************/
171 static void sig_cld(int sig)
174 sys_select_signal(SIGCLD);
177 /****************************************************************************
178 Send a SIGTERM to our process group.
179 *****************************************************************************/
181 static void killkids(void)
183 if(am_parent) kill(0,SIGTERM);
186 /****************************************************************************
187 Process a sam sync message - not sure whether to do this here or
189 ****************************************************************************/
191 static void msg_sam_sync(struct messaging_context *msg,
194 struct server_id server_id,
197 DEBUG(10, ("** sam sync message received, ignoring\n"));
201 /****************************************************************************
202 Open the socket communication - inetd.
203 ****************************************************************************/
205 static bool open_sockets_inetd(void)
207 /* Started from inetd. fd 0 is the socket. */
208 /* We will abort gracefully when the client or remote system
210 smbd_set_server_fd(dup(0));
212 /* close our standard file descriptors */
213 close_low_fds(False); /* Don't close stderr */
215 set_socket_options(smbd_server_fd(),"SO_KEEPALIVE");
216 set_socket_options(smbd_server_fd(), lp_socket_options());
221 static void msg_exit_server(struct messaging_context *msg,
224 struct server_id server_id,
227 DEBUG(3, ("got a SHUTDOWN message\n"));
228 exit_server_cleanly(NULL);
232 static void msg_inject_fault(struct messaging_context *msg,
235 struct server_id src,
240 if (data->length != sizeof(sig)) {
242 DEBUG(0, ("Process %s sent bogus signal injection request\n",
243 procid_str_static(&src)));
247 sig = *(int *)data->data;
249 exit_server("internal error injected");
254 DEBUG(0, ("Process %s requested injection of signal %d (%s)\n",
255 procid_str_static(&src), sig, strsignal(sig)));
257 DEBUG(0, ("Process %s requested injection of signal %d\n",
258 procid_str_static(&src), sig));
261 kill(sys_getpid(), sig);
263 #endif /* DEVELOPER */
266 struct child_pid *prev, *next;
270 static struct child_pid *children;
271 static int num_children;
273 static void add_child_pid(pid_t pid)
275 struct child_pid *child;
277 if (lp_max_smbd_processes() == 0) {
278 /* Don't bother with the child list if we don't care anyway */
282 child = SMB_MALLOC_P(struct child_pid);
284 DEBUG(0, ("Could not add child struct -- malloc failed\n"));
288 DLIST_ADD(children, child);
292 static void remove_child_pid(pid_t pid, bool unclean_shutdown)
294 struct child_pid *child;
296 if (unclean_shutdown) {
297 /* a child terminated uncleanly so tickle all processes to see
298 if they can grab any of the pending locks
300 DEBUG(3,(__location__ " Unclean shutdown of pid %u\n", pid));
301 messaging_send_buf(smbd_messaging_context(), procid_self(),
302 MSG_SMB_BRL_VALIDATE, NULL, 0);
303 message_send_all(smbd_messaging_context(),
304 MSG_SMB_UNLOCK, NULL, 0, NULL);
307 if (lp_max_smbd_processes() == 0) {
308 /* Don't bother with the child list if we don't care anyway */
312 for (child = children; child != NULL; child = child->next) {
313 if (child->pid == pid) {
314 struct child_pid *tmp = child;
315 DLIST_REMOVE(children, child);
322 DEBUG(0, ("Could not find child %d -- ignoring\n", (int)pid));
325 /****************************************************************************
326 Have we reached the process limit ?
327 ****************************************************************************/
329 static bool allowable_number_of_smbd_processes(void)
331 int max_processes = lp_max_smbd_processes();
336 return num_children < max_processes;
339 /****************************************************************************
340 Open the socket communication.
341 ****************************************************************************/
343 static bool open_sockets_smbd(bool is_daemon, bool interactive, const char *smb_ports)
345 int num_interfaces = iface_count();
347 int fd_listenset[FD_SETSIZE];
353 struct dns_reg_state * dns_reg = NULL;
354 unsigned dns_port = 0;
357 return open_sockets_inetd();
362 static int atexit_set;
363 if(atexit_set == 0) {
371 CatchSignal(SIGCLD, sig_cld);
373 FD_ZERO(&listen_set);
375 /* use a reasonable default set of ports - listing on 445 and 139 */
377 ports = lp_smb_ports();
378 if (!ports || !*ports) {
379 ports = smb_xstrdup(SMB_PORTS);
381 ports = smb_xstrdup(ports);
384 ports = smb_xstrdup(smb_ports);
387 if (lp_interfaces() && lp_bind_interfaces_only()) {
388 /* We have been given an interfaces line, and been
389 told to only bind to those interfaces. Create a
390 socket per interface and bind to only these.
393 /* Now open a listen socket for each of the
395 for(i = 0; i < num_interfaces; i++) {
396 TALLOC_CTX *frame = NULL;
397 const struct sockaddr_storage *ifss =
398 iface_n_sockaddr_storage(i);
403 DEBUG(0,("open_sockets_smbd: "
404 "interface %d has NULL IP address !\n",
409 frame = talloc_stackframe();
411 next_token_talloc(frame,&ptr, &tok, " \t,");) {
412 unsigned port = atoi(tok);
413 if (port == 0 || port > 0xffff) {
417 /* Keep the first port for mDNS service
424 s = fd_listenset[num_sockets] =
425 open_socket_in(SOCK_STREAM,
427 num_sockets == 0 ? 0 : 2,
434 /* ready to listen */
435 set_socket_options(s,"SO_KEEPALIVE");
436 set_socket_options(s,lp_socket_options());
438 /* Set server socket to
439 * non-blocking for the accept. */
440 set_blocking(s,False);
442 if (listen(s, SMBD_LISTEN_BACKLOG) == -1) {
443 DEBUG(0,("open_sockets_smbd: listen: "
444 "%s\n", strerror(errno)));
449 FD_SET(s,&listen_set);
450 maxfd = MAX( maxfd, s);
453 if (num_sockets >= FD_SETSIZE) {
454 DEBUG(0,("open_sockets_smbd: Too "
455 "many sockets to bind to\n"));
463 /* Just bind to 0.0.0.0 - accept connections
466 TALLOC_CTX *frame = talloc_stackframe();
469 const char *sock_addr = lp_socket_address();
471 const char *sock_ptr;
473 if (strequal(sock_addr, "0.0.0.0") ||
474 strequal(sock_addr, "::")) {
476 sock_addr = "::,0.0.0.0";
478 sock_addr = "0.0.0.0";
482 for (sock_ptr=sock_addr;
483 next_token_talloc(frame, &sock_ptr, &sock_tok, " \t,"); ) {
484 for (ptr=ports; next_token_talloc(frame, &ptr, &tok, " \t,"); ) {
485 struct sockaddr_storage ss;
487 unsigned port = atoi(tok);
488 if (port == 0 || port > 0xffff) {
492 /* Keep the first port for mDNS service
499 /* open an incoming socket */
500 if (!interpret_string_addr(&ss, sock_tok,
501 AI_NUMERICHOST|AI_PASSIVE)) {
505 s = open_socket_in(SOCK_STREAM,
507 num_sockets == 0 ? 0 : 2,
514 /* ready to listen */
515 set_socket_options(s,"SO_KEEPALIVE");
516 set_socket_options(s,lp_socket_options());
518 /* Set server socket to non-blocking
520 set_blocking(s,False);
522 if (listen(s, SMBD_LISTEN_BACKLOG) == -1) {
523 DEBUG(0,("open_sockets_smbd: "
531 fd_listenset[num_sockets] = s;
532 FD_SET(s,&listen_set);
533 maxfd = MAX( maxfd, s);
537 if (num_sockets >= FD_SETSIZE) {
538 DEBUG(0,("open_sockets_smbd: Too "
539 "many sockets to bind to\n"));
550 if (num_sockets == 0) {
551 DEBUG(0,("open_sockets_smbd: No "
552 "sockets available to bind to.\n"));
556 /* Setup the main smbd so that we can get messages. Note that
557 do this after starting listening. This is needed as when in
558 clustered mode, ctdb won't allow us to start doing database
559 operations until it has gone thru a full startup, which
560 includes checking to see that smbd is listening. */
561 claim_connection(NULL,"",
562 FLAG_MSG_GENERAL|FLAG_MSG_SMBD|FLAG_MSG_DBWRAP);
564 /* Listen to messages */
566 messaging_register(smbd_messaging_context(), NULL,
567 MSG_SMB_SAM_SYNC, msg_sam_sync);
568 messaging_register(smbd_messaging_context(), NULL,
569 MSG_SHUTDOWN, msg_exit_server);
570 messaging_register(smbd_messaging_context(), NULL,
571 MSG_SMB_FILE_RENAME, msg_file_was_renamed);
572 messaging_register(smbd_messaging_context(), NULL,
573 MSG_SMB_CONF_UPDATED, smb_conf_updated);
574 messaging_register(smbd_messaging_context(), NULL,
575 MSG_SMB_STAT_CACHE_DELETE, smb_stat_cache_delete);
576 brl_register_msgs(smbd_messaging_context());
578 #ifdef CLUSTER_SUPPORT
579 if (lp_clustering()) {
580 ctdbd_register_reconfigure(messaging_ctdbd_connection());
585 messaging_register(smbd_messaging_context(), NULL,
586 MSG_SMB_INJECT_FAULT, msg_inject_fault);
589 /* now accept incoming connections - forking a new process
590 for each incoming connection */
591 DEBUG(2,("waiting for a connection\n"));
593 struct timeval now, idle_timeout;
597 /* Ensure we respond to PING and DEBUG messages from the main smbd. */
598 message_dispatch(smbd_messaging_context());
606 while ((pid = sys_waitpid(-1, &status, WNOHANG)) > 0) {
607 bool unclean_shutdown = False;
609 /* If the child terminated normally, assume
610 it was an unclean shutdown unless the
613 if (WIFEXITED(status)) {
614 unclean_shutdown = WEXITSTATUS(status);
616 /* If the child terminated due to a signal
617 we always assume it was unclean.
619 if (WIFSIGNALED(status)) {
620 unclean_shutdown = True;
622 remove_child_pid(pid, unclean_shutdown);
626 idle_timeout = timeval_zero();
628 memcpy((char *)&r_fds, (char *)&listen_set,
633 /* Kick off our mDNS registration. */
635 dns_register_smbd(&dns_reg, dns_port, &maxfd,
636 &r_fds, &idle_timeout);
639 event_add_to_select_args(smbd_event_context(), &now,
640 &r_fds, &w_fds, &idle_timeout,
643 num = sys_select(maxfd+1,&r_fds,&w_fds,NULL,
644 timeval_is_zero(&idle_timeout) ?
645 NULL : &idle_timeout);
647 if (num == -1 && errno == EINTR) {
649 exit_server_cleanly(NULL);
652 /* check for sighup processing */
653 if (reload_after_sighup) {
654 change_to_root_user();
655 DEBUG(1,("Reloading services after SIGHUP\n"));
656 reload_services(False);
657 reload_after_sighup = 0;
664 /* If the idle timeout fired and we don't have any connected
665 * users, exit gracefully. We should be running under a process
666 * controller that will restart us if necessry.
668 if (num == 0 && count_all_current_connections() == 0) {
669 exit_server_cleanly("idle timeout");
672 /* process pending nDNS responses */
673 if (dns_register_smbd_reply(dns_reg, &r_fds, &idle_timeout)) {
677 if (run_events(smbd_event_context(), num, &r_fds, &w_fds)) {
681 /* check if we need to reload services */
682 check_reload(time(NULL));
684 /* Find the sockets that are read-ready -
686 for( ; num > 0; num--) {
687 struct sockaddr addr;
688 socklen_t in_addrlen = sizeof(addr);
692 for(i = 0; i < num_sockets; i++) {
693 if(FD_ISSET(fd_listenset[i],&r_fds)) {
695 /* Clear this so we don't look
697 FD_CLR(fd_listenset[i],&r_fds);
702 smbd_set_server_fd(accept(s,&addr,&in_addrlen));
704 if (smbd_server_fd() == -1 && errno == EINTR)
707 if (smbd_server_fd() == -1) {
708 DEBUG(2,("open_sockets_smbd: accept: %s\n",
713 /* Ensure child is set to blocking mode */
714 set_blocking(smbd_server_fd(),True);
716 if (smbd_server_fd() != -1 && interactive)
719 if (allowable_number_of_smbd_processes() &&
720 smbd_server_fd() != -1 &&
721 ((child = sys_fork())==0)) {
722 char remaddr[INET6_ADDRSTRLEN];
726 /* Stop zombies, the parent explicitly handles
727 * them, counting worker smbds. */
730 /* close the listening socket(s) */
731 for(i = 0; i < num_sockets; i++)
732 close(fd_listenset[i]);
734 /* close our mDNS daemon handle */
735 dns_register_close(&dns_reg);
737 /* close our standard file
739 close_low_fds(False);
742 set_socket_options(smbd_server_fd(),"SO_KEEPALIVE");
743 set_socket_options(smbd_server_fd(),
744 lp_socket_options());
746 /* this is needed so that we get decent entries
747 in smbstatus for port 445 connects */
748 set_remote_machine_name(get_peer_addr(smbd_server_fd(),
753 if (!reinit_after_fork(
754 smbd_messaging_context(),
755 smbd_event_context(),
757 DEBUG(0,("reinit_after_fork() failed\n"));
758 smb_panic("reinit_after_fork() failed");
763 /* The parent doesn't need this socket */
764 close(smbd_server_fd());
766 /* Sun May 6 18:56:14 2001 ackley@cs.unm.edu:
767 Clear the closed fd info out of server_fd --
768 and more importantly, out of client_fd in
769 util_sock.c, to avoid a possible
770 getpeername failure if we reopen the logs
771 and use %I in the filename.
774 smbd_set_server_fd(-1);
777 add_child_pid(child);
780 /* Force parent to check log size after
781 * spawning child. Fix from
782 * klausr@ITAP.Physik.Uni-Stuttgart.De. The
783 * parent smbd will log to logserver.smb. It
784 * writes only two messages for each child
785 * started/finished. But each child writes,
786 * say, 50 messages also in logserver.smb,
787 * begining with the debug_count of the
788 * parent, before the child opens its own log
789 * file logserver.client. In a worst case
790 * scenario the size of logserver.smb would be
791 * checked after about 50*50=2500 messages
794 force_check_log_size();
799 /* NOTREACHED return True; */
802 /****************************************************************************
804 **************************************************************************/
805 void reload_printers(void)
808 int n_services = lp_numservices();
809 int pnum = lp_servicenumber(PRINTERS_NAME);
814 /* remove stale printers */
815 for (snum = 0; snum < n_services; snum++) {
816 /* avoid removing PRINTERS_NAME or non-autoloaded printers */
817 if (snum == pnum || !(lp_snum_ok(snum) && lp_print_ok(snum) &&
818 lp_autoloaded(snum)))
821 pname = lp_printername(snum);
822 if (!pcap_printername_ok(pname)) {
823 DEBUG(3, ("removing stale printer %s\n", pname));
825 if (is_printer_published(NULL, snum, NULL))
826 nt_printer_publish(NULL, snum, SPOOL_DS_UNPUBLISH);
827 del_a_printer(pname);
828 lp_killservice(snum);
835 /****************************************************************************
836 Reload the services file.
837 **************************************************************************/
839 bool reload_services(bool test)
844 char *fname = lp_configfile();
845 if (file_exist(fname, NULL) &&
846 !strcsequal(fname, get_dyn_CONFIGFILE())) {
847 set_dyn_CONFIGFILE(fname);
854 if (test && !lp_file_list_changed())
857 lp_killunused(conn_snum_used);
859 ret = lp_load(get_dyn_CONFIGFILE(), False, False, True, True);
863 /* perhaps the config filename is now set */
865 reload_services(True);
871 if (smbd_server_fd() != -1) {
872 set_socket_options(smbd_server_fd(),"SO_KEEPALIVE");
873 set_socket_options(smbd_server_fd(), lp_socket_options());
876 mangle_reset_cache();
879 /* this forces service parameters to be flushed */
880 set_current_service(NULL,0,True);
885 /****************************************************************************
887 ****************************************************************************/
889 /* Reasons for shutting down a server process. */
890 enum server_exit_reason { SERVER_EXIT_NORMAL, SERVER_EXIT_ABNORMAL };
892 static void exit_server_common(enum server_exit_reason how,
893 const char *const reason) NORETURN_ATTRIBUTE;
895 static void exit_server_common(enum server_exit_reason how,
896 const char *const reason)
898 static int firsttime=1;
905 change_to_root_user();
907 if (negprot_global_auth_context) {
908 (negprot_global_auth_context->free)(&negprot_global_auth_context);
911 had_open_conn = conn_close_all();
913 invalidate_all_vuids();
915 /* 3 second timeout. */
916 print_notify_send_messages(smbd_messaging_context(), 3);
918 /* delete our entry in the connections database. */
919 yield_connection(NULL,"");
921 respond_to_all_remaining_local_messages();
924 if (dcelogin_atmost_once) {
930 /* Destroy Samba DMAPI session only if we are master smbd process */
932 if (!dmapi_destroy_session()) {
933 DEBUG(0,("Unable to close Samba DMAPI session\n"));
941 if (how != SERVER_EXIT_NORMAL) {
942 int oldlevel = DEBUGLEVEL;
947 DEBUG(0,("Abnormal server exit: %s\n",
948 reason ? reason : "no explanation provided"));
953 DEBUGLEVEL = oldlevel;
957 DEBUG(3,("Server exit (%s)\n",
958 (reason ? reason : "normal exit")));
961 /* if we had any open SMB connections when we exited then we
962 need to tell the parent smbd so that it can trigger a retry
963 of any locks we may have been holding or open files we were
972 void exit_server(const char *const explanation)
974 exit_server_common(SERVER_EXIT_ABNORMAL, explanation);
977 void exit_server_cleanly(const char *const explanation)
979 exit_server_common(SERVER_EXIT_NORMAL, explanation);
982 void exit_server_fault(void)
984 exit_server("critical server fault");
988 /****************************************************************************
989 received when we should release a specific IP
990 ****************************************************************************/
991 static void release_ip(const char *ip, void *priv)
993 char addr[INET6_ADDRSTRLEN];
996 client_socket_addr(get_client_fd(),addr,sizeof(addr));
998 if (strncmp("::ffff:", addr, 7) == 0) {
1002 if ((strcmp(p, ip) == 0) || (strcmp(addr, ip) == 0)) {
1003 /* we can't afford to do a clean exit - that involves
1004 database writes, which would potentially mean we
1005 are still running after the failover has finished -
1006 we have to get rid of this process ID straight
1008 DEBUG(0,("Got release IP message for our IP %s - exiting immediately\n",
1010 /* note we must exit with non-zero status so the unclean handler gets
1011 called in the parent, so that the brl database is tickled */
1016 static void msg_release_ip(struct messaging_context *msg_ctx, void *private_data,
1017 uint32_t msg_type, struct server_id server_id, DATA_BLOB *data)
1019 release_ip((char *)data->data, NULL);
1022 /****************************************************************************
1023 Initialise connect, service and file structs.
1024 ****************************************************************************/
1026 static bool init_structs(void )
1029 * Set the machine NETBIOS name if not already
1030 * set from the config file.
1041 init_rpc_pipe_hnd();
1045 if (!secrets_init())
1052 * Send keepalive packets to our client
1054 static bool keepalive_fn(const struct timeval *now, void *private_data)
1056 if (!send_keepalive(smbd_server_fd())) {
1057 DEBUG( 2, ( "Keepalive failed - exiting.\n" ) );
1064 * Do the recurring check if we're idle
1066 static bool deadtime_fn(const struct timeval *now, void *private_data)
1068 if ((conn_num_open() == 0)
1069 || (conn_idle_all(now->tv_sec))) {
1070 DEBUG( 2, ( "Closing idle connection\n" ) );
1071 messaging_send(smbd_messaging_context(), procid_self(),
1072 MSG_SHUTDOWN, &data_blob_null);
1080 /****************************************************************************
1082 ****************************************************************************/
1084 /* Declare prototype for build_options() to avoid having to run it through
1085 mkproto.h. Mixing $(builddir) and $(srcdir) source files in the current
1086 prototype generation system is too complicated. */
1088 extern void build_options(bool screen);
1090 int main(int argc,const char *argv[])
1092 /* shall I run as a daemon */
1093 static bool is_daemon = False;
1094 static bool interactive = False;
1095 static bool Fork = True;
1096 static bool no_process_group = False;
1097 static bool log_stdout = False;
1098 static char *ports = NULL;
1099 static char *profile_level = NULL;
1102 bool print_build_options = False;
1107 OPT_NO_PROCESS_GROUP,
1110 struct poptOption long_options[] = {
1112 {"daemon", 'D', POPT_ARG_NONE, NULL, OPT_DAEMON, "Become a daemon (default)" },
1113 {"interactive", 'i', POPT_ARG_NONE, NULL, OPT_INTERACTIVE, "Run interactive (not a daemon)"},
1114 {"foreground", 'F', POPT_ARG_NONE, NULL, OPT_FORK, "Run daemon in foreground (for daemontools, etc.)" },
1115 {"no-process-group", '\0', POPT_ARG_NONE, NULL, OPT_NO_PROCESS_GROUP, "Don't create a new process group" },
1116 {"log-stdout", 'S', POPT_ARG_NONE, NULL, OPT_LOG_STDOUT, "Log to stdout" },
1117 {"build-options", 'b', POPT_ARG_NONE, NULL, 'b', "Print build options" },
1118 {"port", 'p', POPT_ARG_STRING, &ports, 0, "Listen on the specified ports"},
1119 {"profiling-level", 'P', POPT_ARG_STRING, &profile_level, 0, "Set profiling level","PROFILE_LEVEL"},
1121 POPT_COMMON_DYNCONFIG
1124 TALLOC_CTX *frame = talloc_stackframe(); /* Setup tos. */
1128 #ifdef HAVE_SET_AUTH_PARAMETERS
1129 set_auth_parameters(argc,argv);
1132 pc = poptGetContext("smbd", argc, argv, long_options, 0);
1133 while((opt = poptGetNextOpt(pc)) != -1) {
1138 case OPT_INTERACTIVE:
1144 case OPT_NO_PROCESS_GROUP:
1145 no_process_group = true;
1147 case OPT_LOG_STDOUT:
1151 print_build_options = True;
1154 d_fprintf(stderr, "\nInvalid option %s: %s\n\n",
1155 poptBadOption(pc, 0), poptStrerror(opt));
1156 poptPrintUsage(pc, stderr, 0);
1160 poptFreeContext(pc);
1167 setup_logging(argv[0],log_stdout);
1169 if (print_build_options) {
1170 build_options(True); /* Display output to screen as well as debug */
1177 /* needed for SecureWare on SCO */
1183 set_remote_machine_name("smbd", False);
1185 if (interactive && (DEBUGLEVEL >= 9)) {
1186 talloc_enable_leak_report();
1189 if (log_stdout && Fork) {
1190 DEBUG(0,("ERROR: Can't log to stdout (-S) unless daemon is in foreground (-F) or interactive (-i)\n"));
1194 /* we want to re-seed early to prevent time delays causing
1195 client problems at a later date. (tridge) */
1196 generate_random_buffer(NULL, 0);
1198 /* make absolutely sure we run as root - to handle cases where people
1199 are crazy enough to have it setuid */
1201 gain_root_privilege();
1202 gain_root_group_privilege();
1204 fault_setup((void (*)(void *))exit_server_fault);
1205 dump_core_setup("smbd");
1207 CatchSignal(SIGTERM , SIGNAL_CAST sig_term);
1208 CatchSignal(SIGHUP,SIGNAL_CAST sig_hup);
1210 /* we are never interested in SIGPIPE */
1211 BlockSignals(True,SIGPIPE);
1214 /* we are never interested in SIGFPE */
1215 BlockSignals(True,SIGFPE);
1218 #if defined(SIGUSR2)
1219 /* We are no longer interested in USR2 */
1220 BlockSignals(True,SIGUSR2);
1223 /* POSIX demands that signals are inherited. If the invoking process has
1224 * these signals masked, we will have problems, as we won't recieve them. */
1225 BlockSignals(False, SIGHUP);
1226 BlockSignals(False, SIGUSR1);
1227 BlockSignals(False, SIGTERM);
1229 /* we want total control over the permissions on created files,
1230 so set our umask to 0 */
1237 DEBUG(0,("smbd version %s started.\n", SAMBA_VERSION_STRING));
1238 DEBUGADD(0,("%s\n", COPYRIGHT_STARTUP_MESSAGE));
1240 DEBUG(2,("uid=%d gid=%d euid=%d egid=%d\n",
1241 (int)getuid(),(int)getgid(),(int)geteuid(),(int)getegid()));
1243 /* Output the build options to the debug log */
1244 build_options(False);
1246 if (sizeof(uint16) < 2 || sizeof(uint32) < 4) {
1247 DEBUG(0,("ERROR: Samba is not configured correctly for the word size on your machine\n"));
1251 if (!lp_load_initial_only(get_dyn_CONFIGFILE())) {
1252 DEBUG(0, ("error opening config file\n"));
1256 if (smbd_messaging_context() == NULL)
1259 if (!reload_services(False))
1265 if (!profile_setup(smbd_messaging_context(), False)) {
1266 DEBUG(0,("ERROR: failed to setup profiling\n"));
1269 if (profile_level != NULL) {
1270 int pl = atoi(profile_level);
1271 struct server_id src;
1273 DEBUG(1, ("setting profiling level: %s\n",profile_level));
1275 set_profile_level(pl, src);
1279 DEBUG(3,( "loaded services\n"));
1281 if (!is_daemon && !is_a_socket(0)) {
1283 DEBUG(0,("standard input is not a socket, assuming -D option\n"));
1286 * Setting is_daemon here prevents us from eventually calling
1287 * the open_sockets_inetd()
1293 if (is_daemon && !interactive) {
1294 DEBUG( 3, ( "Becoming a daemon.\n" ) );
1295 become_daemon(Fork, no_process_group);
1300 * If we're interactive we want to set our own process group for
1301 * signal management.
1303 if (interactive && !no_process_group)
1304 setpgid( (pid_t)0, (pid_t)0);
1307 if (!directory_exist(lp_lockdir(), NULL))
1308 mkdir(lp_lockdir(), 0755);
1311 pidfile_create("smbd");
1313 if (!reinit_after_fork(smbd_messaging_context(),
1314 smbd_event_context(), false)) {
1315 DEBUG(0,("reinit_after_fork() failed\n"));
1319 /* Setup all the TDB's - including CLEAR_IF_FIRST tdb's. */
1321 if (smbd_memcache() == NULL) {
1325 memcache_set_global(smbd_memcache());
1327 /* Initialise the password backed before the global_sam_sid
1328 to ensure that we fetch from ldap before we make a domain sid up */
1330 if(!initialize_password_db(False, smbd_event_context()))
1333 if (!secrets_init()) {
1334 DEBUG(0, ("ERROR: smbd can not open secrets.tdb\n"));
1338 if(!get_global_sam_sid()) {
1339 DEBUG(0,("ERROR: Samba cannot create a SAM SID.\n"));
1343 if (!session_init())
1346 if (!connections_init(True))
1349 if (!locking_init())
1354 if (!W_ERROR_IS_OK(registry_init_full()))
1358 if (!init_svcctl_db())
1362 if (!print_backend_init(smbd_messaging_context()))
1365 if (!init_guest_info()) {
1366 DEBUG(0,("ERROR: failed to setup guest info.\n"));
1370 /* only start the background queue daemon if we are
1371 running as a daemon -- bad things will happen if
1372 smbd is launched via inetd and we fork a copy of
1375 if (is_daemon && !interactive
1376 && lp_parm_bool(-1, "smbd", "backgroundqueue", true)) {
1377 start_background_queue();
1380 if (!open_sockets_smbd(is_daemon, interactive, ports))
1384 * everything after this point is run after the fork()
1391 /* Possibly reload the services file. Only worth doing in
1392 * daemon mode. In inetd mode, we know we only just loaded this.
1395 reload_services(True);
1398 if (!init_account_policy()) {
1399 DEBUG(0,("Could not open account policy tdb.\n"));
1403 if (*lp_rootdir()) {
1404 if (sys_chroot(lp_rootdir()) != 0) {
1405 DEBUG(0,("Failed to change root to %s\n", lp_rootdir()));
1408 if (chdir("/") == -1) {
1409 DEBUG(0,("Failed to chdir to / on chroot to %s\n", lp_rootdir()));
1412 DEBUG(0,("Changed root to %s\n", lp_rootdir()));
1416 if (!init_oplocks(smbd_messaging_context()))
1419 /* Setup aio signal handler. */
1420 initialize_async_io_handler();
1422 /* register our message handlers */
1423 messaging_register(smbd_messaging_context(), NULL,
1424 MSG_SMB_FORCE_TDIS, msg_force_tdis);
1425 messaging_register(smbd_messaging_context(), NULL,
1426 MSG_SMB_RELEASE_IP, msg_release_ip);
1427 messaging_register(smbd_messaging_context(), NULL,
1428 MSG_SMB_CLOSE_FILE, msg_close_file);
1430 if ((lp_keepalive() != 0)
1431 && !(event_add_idle(smbd_event_context(), NULL,
1432 timeval_set(lp_keepalive(), 0),
1433 "keepalive", keepalive_fn,
1435 DEBUG(0, ("Could not add keepalive event\n"));
1439 if (!(event_add_idle(smbd_event_context(), NULL,
1440 timeval_set(IDLE_CLOSED_TIMEOUT, 0),
1441 "deadtime", deadtime_fn, NULL))) {
1442 DEBUG(0, ("Could not add deadtime event\n"));
1446 #ifdef CLUSTER_SUPPORT
1448 if (lp_clustering()) {
1450 * We need to tell ctdb about our client's TCP
1451 * connection, so that for failover ctdbd can send
1452 * tickle acks, triggering a reconnection by the
1456 struct sockaddr_storage srv, clnt;
1458 if (client_get_tcp_info(&srv, &clnt) == 0) {
1462 status = ctdbd_register_ips(
1463 messaging_ctdbd_connection(),
1464 &srv, &clnt, release_ip, NULL);
1466 if (!NT_STATUS_IS_OK(status)) {
1467 DEBUG(0, ("ctdbd_register_ips failed: %s\n",
1468 nt_errstr(status)));
1472 DEBUG(0,("Unable to get tcp info for "
1473 "CTDB_CONTROL_TCP_CLIENT: %s\n",
1484 namecache_shutdown();
1486 exit_server_cleanly(NULL);