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/>.
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"
33 #include "ctdbd_conn.h"
34 #include "printing/queue_process.h"
35 #include "rpc_server/rpc_service_setup.h"
36 #include "rpc_server/rpc_config.h"
41 #include "smbprofile.h"
42 #include "lib/id_cache.h"
43 #include "lib/param/param.h"
45 struct smbd_open_socket;
46 struct smbd_child_pid;
48 struct smbd_parent_context {
51 struct tevent_context *ev_ctx;
52 struct messaging_context *msg_ctx;
54 /* the list of listening sockets */
55 struct smbd_open_socket *sockets;
57 /* the list of current child processes */
58 struct smbd_child_pid *children;
61 struct timed_event *cleanup_te;
64 struct smbd_open_socket {
65 struct smbd_open_socket *prev, *next;
66 struct smbd_parent_context *parent;
68 struct tevent_fd *fde;
71 struct smbd_child_pid {
72 struct smbd_child_pid *prev, *next;
76 extern void start_epmd(struct tevent_context *ev_ctx,
77 struct messaging_context *msg_ctx);
79 extern void start_lsasd(struct event_context *ev_ctx,
80 struct messaging_context *msg_ctx);
83 extern int dcelogin_atmost_once;
86 /*******************************************************************
87 What to do when smb.conf is updated.
88 ********************************************************************/
90 static void smb_conf_updated(struct messaging_context *msg,
93 struct server_id server_id,
96 struct tevent_context *ev_ctx =
97 talloc_get_type_abort(private_data, struct tevent_context);
98 struct smbd_server_connection *sconn = msg_ctx_to_sconn(msg);
100 DEBUG(10,("smb_conf_updated: Got message saying smb.conf was "
101 "updated. Reloading.\n"));
102 change_to_root_user();
103 reload_services(msg, sconn->sock, False);
105 printing_subsystem_update(ev_ctx, msg, false);
109 /*******************************************************************
110 What to do when printcap is updated.
111 ********************************************************************/
113 static void smb_pcap_updated(struct messaging_context *msg,
116 struct server_id server_id,
119 struct tevent_context *ev_ctx =
120 talloc_get_type_abort(private_data, struct tevent_context);
122 DEBUG(10,("Got message saying pcap was updated. Reloading.\n"));
123 change_to_root_user();
124 delete_and_reload_printers(ev_ctx, msg);
127 /*******************************************************************
128 Delete a statcache entry.
129 ********************************************************************/
131 static void smb_stat_cache_delete(struct messaging_context *msg,
134 struct server_id server_id,
137 const char *name = (const char *)data->data;
138 DEBUG(10,("smb_stat_cache_delete: delete name %s\n", name));
139 stat_cache_delete(name);
142 /****************************************************************************
143 Send a SIGTERM to our process group.
144 *****************************************************************************/
146 static void killkids(void)
148 if(am_parent) kill(0,SIGTERM);
151 static void msg_exit_server(struct messaging_context *msg,
154 struct server_id server_id,
157 DEBUG(3, ("got a SHUTDOWN message\n"));
158 exit_server_cleanly(NULL);
162 static void msg_inject_fault(struct messaging_context *msg,
165 struct server_id src,
170 if (data->length != sizeof(sig)) {
171 DEBUG(0, ("Process %s sent bogus signal injection request\n",
172 procid_str_static(&src)));
176 sig = *(int *)data->data;
178 exit_server("internal error injected");
183 DEBUG(0, ("Process %s requested injection of signal %d (%s)\n",
184 procid_str_static(&src), sig, strsignal(sig)));
186 DEBUG(0, ("Process %s requested injection of signal %d\n",
187 procid_str_static(&src), sig));
190 kill(sys_getpid(), sig);
192 #endif /* DEVELOPER */
194 NTSTATUS messaging_send_to_children(struct messaging_context *msg_ctx,
195 uint32_t msg_type, DATA_BLOB* data)
198 struct smbd_parent_context *parent = am_parent;
199 struct smbd_child_pid *child;
201 if (parent == NULL) {
202 return NT_STATUS_INTERNAL_ERROR;
205 for (child = parent->children; child != NULL; child = child->next) {
206 status = messaging_send(parent->msg_ctx,
207 pid_to_procid(child->pid),
209 if (!NT_STATUS_IS_OK(status)) {
217 * Parent smbd process sets its own debug level first and then
218 * sends a message to all the smbd children to adjust their debug
219 * level to that of the parent.
222 static void smbd_msg_debug(struct messaging_context *msg_ctx,
225 struct server_id server_id,
228 debug_message(msg_ctx, private_data, MSG_DEBUG, server_id, data);
230 messaging_send_to_children(msg_ctx, MSG_DEBUG, data);
233 static void add_child_pid(struct smbd_parent_context *parent,
236 struct smbd_child_pid *child;
238 child = talloc_zero(parent, struct smbd_child_pid);
240 DEBUG(0, ("Could not add child struct -- malloc failed\n"));
244 DLIST_ADD(parent->children, child);
245 parent->num_children += 1;
249 at most every smbd:cleanuptime seconds (default 20), we scan the BRL
250 and locking database for entries to cleanup. As a side effect this
251 also cleans up dead entries in the connections database (due to the
252 traversal in message_send_all()
254 Using a timer for this prevents a flood of traversals when a large
255 number of clients disconnect at the same time (perhaps due to a
259 static void cleanup_timeout_fn(struct event_context *event_ctx,
260 struct timed_event *te,
264 struct smbd_parent_context *parent =
265 talloc_get_type_abort(private_data,
266 struct smbd_parent_context);
268 parent->cleanup_te = NULL;
270 DEBUG(1,("Cleaning up brl and lock database after unclean shutdown\n"));
271 message_send_all(parent->msg_ctx, MSG_SMB_UNLOCK, NULL, 0, NULL);
272 messaging_send_buf(parent->msg_ctx,
273 messaging_server_id(parent->msg_ctx),
274 MSG_SMB_BRL_VALIDATE, NULL, 0);
277 static void remove_child_pid(struct smbd_parent_context *parent,
279 bool unclean_shutdown)
281 struct smbd_child_pid *child;
282 struct server_id child_id;
284 if (unclean_shutdown) {
285 /* a child terminated uncleanly so tickle all
286 processes to see if they can grab any of the
289 DEBUG(3,(__location__ " Unclean shutdown of pid %u\n",
291 if (parent->cleanup_te == NULL) {
292 /* call the cleanup timer, but not too often */
293 int cleanup_time = lp_parm_int(-1, "smbd", "cleanuptime", 20);
294 parent->cleanup_te = tevent_add_timer(parent->ev_ctx,
296 timeval_current_ofs(cleanup_time, 0),
299 DEBUG(1,("Scheduled cleanup of brl and lock database after unclean shutdown\n"));
303 child_id = pid_to_procid(pid);
305 if (!serverid_deregister(child_id)) {
306 DEBUG(1, ("Could not remove pid %d from serverid.tdb\n",
310 for (child = parent->children; child != NULL; child = child->next) {
311 if (child->pid == pid) {
312 struct smbd_child_pid *tmp = child;
313 DLIST_REMOVE(parent->children, child);
315 parent->num_children -= 1;
320 /* not all forked child processes are added to the children list */
321 DEBUG(1, ("Could not find child %d -- ignoring\n", (int)pid));
324 /****************************************************************************
325 Have we reached the process limit ?
326 ****************************************************************************/
328 static bool allowable_number_of_smbd_processes(struct smbd_parent_context *parent)
330 int max_processes = lp_max_smbd_processes();
335 return parent->num_children < max_processes;
338 static void smbd_sig_chld_handler(struct tevent_context *ev,
339 struct tevent_signal *se,
347 struct smbd_parent_context *parent =
348 talloc_get_type_abort(private_data,
349 struct smbd_parent_context);
351 while ((pid = sys_waitpid(-1, &status, WNOHANG)) > 0) {
352 bool unclean_shutdown = False;
354 /* If the child terminated normally, assume
355 it was an unclean shutdown unless the
358 if (WIFEXITED(status)) {
359 unclean_shutdown = WEXITSTATUS(status);
361 /* If the child terminated due to a signal
362 we always assume it was unclean.
364 if (WIFSIGNALED(status)) {
365 unclean_shutdown = True;
367 remove_child_pid(parent, pid, unclean_shutdown);
371 static void smbd_setup_sig_chld_handler(struct smbd_parent_context *parent)
373 struct tevent_signal *se;
375 se = tevent_add_signal(parent->ev_ctx,
376 parent, /* mem_ctx */
378 smbd_sig_chld_handler,
381 exit_server("failed to setup SIGCHLD handler");
385 static void smbd_open_socket_close_fn(struct tevent_context *ev,
386 struct tevent_fd *fde,
390 /* this might be the socket_wrapper swrap_close() */
394 static void smbd_accept_connection(struct tevent_context *ev,
395 struct tevent_fd *fde,
399 struct smbd_open_socket *s = talloc_get_type_abort(private_data,
400 struct smbd_open_socket);
401 struct messaging_context *msg_ctx = s->parent->msg_ctx;
402 struct smbd_server_connection *sconn = msg_ctx_to_sconn(msg_ctx);
403 struct sockaddr_storage addr;
404 socklen_t in_addrlen = sizeof(addr);
409 fd = accept(s->fd, (struct sockaddr *)(void *)&addr,&in_addrlen);
411 if (fd == -1 && errno == EINTR)
415 DEBUG(0,("open_sockets_smbd: accept: %s\n",
420 if (s->parent->interactive) {
421 smbd_process(ev, sconn);
422 exit_server_cleanly("end of interactive mode");
426 if (!allowable_number_of_smbd_processes(s->parent)) {
433 * Generate a unique id in the parent process so that we use
434 * the global random state in the parent.
436 generate_random_buffer((uint8_t *)&unique_id, sizeof(unique_id));
440 NTSTATUS status = NT_STATUS_OK;
446 * Can't use TALLOC_FREE here. Nulling out the argument to it
447 * would overwrite memory we've just freed.
449 talloc_free(s->parent);
452 set_my_unique_id(unique_id);
454 /* Stop zombies, the parent explicitly handles
455 * them, counting worker smbds. */
458 /* close our standard file
460 if (!debug_get_output_is_stdout()) {
461 close_low_fds(False); /* Don't close stderr */
464 status = reinit_after_fork(msg_ctx,
467 if (!NT_STATUS_IS_OK(status)) {
468 if (NT_STATUS_EQUAL(status,
469 NT_STATUS_TOO_MANY_OPENED_FILES)) {
470 DEBUG(0,("child process cannot initialize "
471 "because too many files are open\n"));
474 if (lp_clustering() &&
475 NT_STATUS_EQUAL(status,
476 NT_STATUS_INTERNAL_DB_ERROR)) {
477 DEBUG(1,("child process cannot initialize "
478 "because connection to CTDB "
483 DEBUG(0,("reinit_after_fork() failed\n"));
484 smb_panic("reinit_after_fork() failed");
487 smbd_setup_sig_term_handler(sconn);
488 smbd_setup_sig_hup_handler(sconn);
490 if (!serverid_register(messaging_server_id(msg_ctx),
491 FLAG_MSG_GENERAL|FLAG_MSG_SMBD
493 |FLAG_MSG_PRINT_GENERAL)) {
494 exit_server_cleanly("Could not register myself in "
498 smbd_process(ev, sconn);
500 exit_server_cleanly("end of child");
505 DEBUG(0,("smbd_accept_connection: sys_fork() failed: %s\n",
509 /* The parent doesn't need this socket */
512 /* Sun May 6 18:56:14 2001 ackley@cs.unm.edu:
513 Clear the closed fd info out of server_fd --
514 and more importantly, out of client_fd in
515 util_sock.c, to avoid a possible
516 getpeername failure if we reopen the logs
517 and use %I in the filename.
522 add_child_pid(s->parent, pid);
525 /* Force parent to check log size after
526 * spawning child. Fix from
527 * klausr@ITAP.Physik.Uni-Stuttgart.De. The
528 * parent smbd will log to logserver.smb. It
529 * writes only two messages for each child
530 * started/finished. But each child writes,
531 * say, 50 messages also in logserver.smb,
532 * begining with the debug_count of the
533 * parent, before the child opens its own log
534 * file logserver.client. In a worst case
535 * scenario the size of logserver.smb would be
536 * checked after about 50*50=2500 messages
539 force_check_log_size();
542 static bool smbd_open_one_socket(struct smbd_parent_context *parent,
543 struct tevent_context *ev_ctx,
544 struct messaging_context *msg_ctx,
545 const struct sockaddr_storage *ifss,
548 struct smbd_open_socket *s;
550 s = talloc(parent, struct smbd_open_socket);
556 s->fd = open_socket_in(SOCK_STREAM,
558 parent->sockets == NULL ? 0 : 2,
562 DEBUG(0,("smbd_open_once_socket: open_socket_in: "
563 "%s\n", strerror(errno)));
566 * We ignore an error here, as we've done before
571 /* ready to listen */
572 set_socket_options(s->fd, "SO_KEEPALIVE");
573 set_socket_options(s->fd, lp_socket_options());
575 /* Set server socket to
576 * non-blocking for the accept. */
577 set_blocking(s->fd, False);
579 if (listen(s->fd, SMBD_LISTEN_BACKLOG) == -1) {
580 DEBUG(0,("open_sockets_smbd: listen: "
581 "%s\n", strerror(errno)));
587 s->fde = tevent_add_fd(ev_ctx,
589 s->fd, TEVENT_FD_READ,
590 smbd_accept_connection,
593 DEBUG(0,("open_sockets_smbd: "
594 "tevent_add_fd: %s\n",
600 tevent_fd_set_close_fn(s->fde, smbd_open_socket_close_fn);
602 DLIST_ADD_END(parent->sockets, s, struct smbd_open_socket *);
607 /****************************************************************************
608 Open the socket communication.
609 ****************************************************************************/
611 static bool open_sockets_smbd(struct smbd_parent_context *parent,
612 struct tevent_context *ev_ctx,
613 struct messaging_context *msg_ctx,
614 const char *smb_ports)
616 int num_interfaces = iface_count();
619 unsigned dns_port = 0;
626 smbd_setup_sig_chld_handler(parent);
628 /* use a reasonable default set of ports - listing on 445 and 139 */
630 ports = lp_smb_ports();
631 if (!ports || !*ports) {
632 ports = talloc_strdup(talloc_tos(), SMB_PORTS);
634 ports = talloc_strdup(talloc_tos(), ports);
637 ports = talloc_strdup(talloc_tos(), smb_ports);
640 if (lp_interfaces() && lp_bind_interfaces_only()) {
641 /* We have been given an interfaces line, and been
642 told to only bind to those interfaces. Create a
643 socket per interface and bind to only these.
646 /* Now open a listen socket for each of the
648 for(i = 0; i < num_interfaces; i++) {
649 const struct sockaddr_storage *ifss =
650 iface_n_sockaddr_storage(i);
655 DEBUG(0,("open_sockets_smbd: "
656 "interface %d has NULL IP address !\n",
662 next_token_talloc(talloc_tos(),&ptr, &tok, " \t,");) {
663 unsigned port = atoi(tok);
664 if (port == 0 || port > 0xffff) {
668 /* Keep the first port for mDNS service
675 if (!smbd_open_one_socket(parent,
685 /* Just bind to 0.0.0.0 - accept connections
690 const char *sock_addr = lp_socket_address();
692 const char *sock_ptr;
694 if (strequal(sock_addr, "0.0.0.0") ||
695 strequal(sock_addr, "::")) {
697 sock_addr = "::,0.0.0.0";
699 sock_addr = "0.0.0.0";
703 for (sock_ptr=sock_addr;
704 next_token_talloc(talloc_tos(), &sock_ptr, &sock_tok, " \t,"); ) {
705 for (ptr=ports; next_token_talloc(talloc_tos(), &ptr, &tok, " \t,"); ) {
706 struct sockaddr_storage ss;
708 unsigned port = atoi(tok);
709 if (port == 0 || port > 0xffff) {
713 /* Keep the first port for mDNS service
720 /* open an incoming socket */
721 if (!interpret_string_addr(&ss, sock_tok,
722 AI_NUMERICHOST|AI_PASSIVE)) {
726 if (!smbd_open_one_socket(parent,
737 if (parent->sockets == NULL) {
738 DEBUG(0,("open_sockets_smbd: No "
739 "sockets available to bind to.\n"));
743 /* Setup the main smbd so that we can get messages. Note that
744 do this after starting listening. This is needed as when in
745 clustered mode, ctdb won't allow us to start doing database
746 operations until it has gone thru a full startup, which
747 includes checking to see that smbd is listening. */
749 if (!serverid_register(messaging_server_id(msg_ctx),
750 FLAG_MSG_GENERAL|FLAG_MSG_SMBD
751 |FLAG_MSG_PRINT_GENERAL
753 DEBUG(0, ("open_sockets_smbd: Failed to register "
754 "myself in serverid.tdb\n"));
758 /* Listen to messages */
760 messaging_register(msg_ctx, NULL, MSG_SHUTDOWN, msg_exit_server);
761 messaging_register(msg_ctx, ev_ctx, MSG_SMB_CONF_UPDATED,
763 messaging_register(msg_ctx, NULL, MSG_SMB_STAT_CACHE_DELETE,
764 smb_stat_cache_delete);
765 messaging_register(msg_ctx, NULL, MSG_DEBUG, smbd_msg_debug);
766 messaging_register(msg_ctx, ev_ctx, MSG_PRINTER_PCAP,
768 brl_register_msgs(msg_ctx);
770 msg_idmap_register_msg(msg_ctx);
772 #ifdef CLUSTER_SUPPORT
773 if (lp_clustering()) {
774 ctdbd_register_reconfigure(messaging_ctdbd_connection());
779 messaging_register(msg_ctx, NULL, MSG_SMB_INJECT_FAULT,
783 if (lp_multicast_dns_register() && (dns_port != 0)) {
784 #ifdef WITH_DNSSD_SUPPORT
785 smbd_setup_mdns_registration(ev_ctx,
788 #ifdef WITH_AVAHI_SUPPORT
791 avahi_conn = avahi_start_register(ev_ctx,
794 if (avahi_conn == NULL) {
795 DEBUG(10, ("avahi_start_register failed\n"));
803 static void smbd_parent_loop(struct tevent_context *ev_ctx,
804 struct smbd_parent_context *parent)
806 /* now accept incoming connections - forking a new process
807 for each incoming connection */
808 DEBUG(2,("waiting for connections\n"));
811 TALLOC_CTX *frame = talloc_stackframe();
813 ret = tevent_loop_once(ev_ctx);
815 exit_server_cleanly("tevent_loop_once() error");
821 /* NOTREACHED return True; */
825 /****************************************************************************
826 Initialise connect, service and file structs.
827 ****************************************************************************/
829 static bool init_structs(void )
832 * Set the machine NETBIOS name if not already
833 * set from the config file.
845 static void smbd_parent_sig_term_handler(struct tevent_context *ev,
846 struct tevent_signal *se,
852 exit_server_cleanly("termination signal");
855 static void smbd_parent_sig_hup_handler(struct tevent_context *ev,
856 struct tevent_signal *se,
862 struct smbd_parent_context *parent =
863 talloc_get_type_abort(private_data,
864 struct smbd_parent_context);
866 change_to_root_user();
867 DEBUG(1,("parent: Reloading services after SIGHUP\n"));
868 reload_services(parent->msg_ctx, -1, false);
870 printing_subsystem_update(parent->ev_ctx, parent->msg_ctx, true);
873 /****************************************************************************
875 ****************************************************************************/
877 /* Declare prototype for build_options() to avoid having to run it through
878 mkproto.h. Mixing $(builddir) and $(srcdir) source files in the current
879 prototype generation system is too complicated. */
881 extern void build_options(bool screen);
883 int main(int argc,const char *argv[])
885 /* shall I run as a daemon */
886 bool is_daemon = false;
887 bool interactive = false;
889 bool no_process_group = false;
890 bool log_stdout = false;
892 char *profile_level = NULL;
895 bool print_build_options = False;
900 OPT_NO_PROCESS_GROUP,
903 struct poptOption long_options[] = {
905 {"daemon", 'D', POPT_ARG_NONE, NULL, OPT_DAEMON, "Become a daemon (default)" },
906 {"interactive", 'i', POPT_ARG_NONE, NULL, OPT_INTERACTIVE, "Run interactive (not a daemon)"},
907 {"foreground", 'F', POPT_ARG_NONE, NULL, OPT_FORK, "Run daemon in foreground (for daemontools, etc.)" },
908 {"no-process-group", '\0', POPT_ARG_NONE, NULL, OPT_NO_PROCESS_GROUP, "Don't create a new process group" },
909 {"log-stdout", 'S', POPT_ARG_NONE, NULL, OPT_LOG_STDOUT, "Log to stdout" },
910 {"build-options", 'b', POPT_ARG_NONE, NULL, 'b', "Print build options" },
911 {"port", 'p', POPT_ARG_STRING, &ports, 0, "Listen on the specified ports"},
912 {"profiling-level", 'P', POPT_ARG_STRING, &profile_level, 0, "Set profiling level","PROFILE_LEVEL"},
914 POPT_COMMON_DYNCONFIG
917 struct smbd_parent_context *parent = NULL;
921 struct tevent_context *ev_ctx;
922 struct messaging_context *msg_ctx;
923 struct tevent_signal *se;
926 * Do this before any other talloc operation
928 talloc_enable_null_tracking();
929 frame = talloc_stackframe();
931 setup_logging(argv[0], DEBUG_DEFAULT_STDOUT);
939 #ifdef HAVE_SET_AUTH_PARAMETERS
940 set_auth_parameters(argc,argv);
943 pc = poptGetContext("smbd", argc, argv, long_options, 0);
944 while((opt = poptGetNextOpt(pc)) != -1) {
949 case OPT_INTERACTIVE:
955 case OPT_NO_PROCESS_GROUP:
956 no_process_group = true;
962 print_build_options = True;
965 d_fprintf(stderr, "\nInvalid option %s: %s\n\n",
966 poptBadOption(pc, 0), poptStrerror(opt));
967 poptPrintUsage(pc, stderr, 0);
979 setup_logging(argv[0], DEBUG_STDOUT);
981 setup_logging(argv[0], DEBUG_FILE);
984 if (print_build_options) {
985 build_options(True); /* Display output to screen as well as debug */
990 /* needed for SecureWare on SCO */
994 set_remote_machine_name("smbd", False);
996 if (interactive && (DEBUGLEVEL >= 9)) {
997 talloc_enable_leak_report();
1000 if (log_stdout && Fork) {
1001 DEBUG(0,("ERROR: Can't log to stdout (-S) unless daemon is in foreground (-F) or interactive (-i)\n"));
1005 /* we want to re-seed early to prevent time delays causing
1006 client problems at a later date. (tridge) */
1007 generate_random_buffer(NULL, 0);
1009 /* get initial effective uid and gid */
1012 /* make absolutely sure we run as root - to handle cases where people
1013 are crazy enough to have it setuid */
1014 gain_root_privilege();
1015 gain_root_group_privilege();
1018 dump_core_setup("smbd", lp_logfile());
1020 /* we are never interested in SIGPIPE */
1021 BlockSignals(True,SIGPIPE);
1024 /* we are never interested in SIGFPE */
1025 BlockSignals(True,SIGFPE);
1028 #if defined(SIGUSR2)
1029 /* We are no longer interested in USR2 */
1030 BlockSignals(True,SIGUSR2);
1033 /* POSIX demands that signals are inherited. If the invoking process has
1034 * these signals masked, we will have problems, as we won't recieve them. */
1035 BlockSignals(False, SIGHUP);
1036 BlockSignals(False, SIGUSR1);
1037 BlockSignals(False, SIGTERM);
1039 /* Ensure we leave no zombies until we
1040 * correctly set up child handling below. */
1044 /* we want total control over the permissions on created files,
1045 so set our umask to 0 */
1050 DEBUG(0,("smbd version %s started.\n", samba_version_string()));
1051 DEBUGADD(0,("%s\n", COPYRIGHT_STARTUP_MESSAGE));
1053 DEBUG(2,("uid=%d gid=%d euid=%d egid=%d\n",
1054 (int)getuid(),(int)getgid(),(int)geteuid(),(int)getegid()));
1056 /* Output the build options to the debug log */
1057 build_options(False);
1059 if (sizeof(uint16) < 2 || sizeof(uint32) < 4) {
1060 DEBUG(0,("ERROR: Samba is not configured correctly for the word size on your machine\n"));
1064 if (!lp_load_initial_only(get_dyn_CONFIGFILE())) {
1065 DEBUG(0, ("error opening config file '%s'\n", get_dyn_CONFIGFILE()));
1069 /* Init the security context and global current_user */
1073 * Initialize the event context. The event context needs to be
1074 * initialized before the messaging context, cause the messaging
1075 * context holds an event context.
1076 * FIXME: This should be s3_tevent_context_init()
1078 ev_ctx = server_event_context();
1079 if (ev_ctx == NULL) {
1084 * Init the messaging context
1085 * FIXME: This should only call messaging_init()
1087 msg_ctx = server_messaging_context();
1088 if (msg_ctx == NULL) {
1093 * Reloading of the printers will not work here as we don't have a
1094 * server info and rpc services set up. It will be called later.
1096 if (!reload_services(NULL, -1, False)) {
1100 /* ...NOTE... Log files are working from this point! */
1102 DEBUG(3,("loaded services\n"));
1107 if (!profile_setup(msg_ctx, False)) {
1108 DEBUG(0,("ERROR: failed to setup profiling\n"));
1111 if (profile_level != NULL) {
1112 int pl = atoi(profile_level);
1113 struct server_id src;
1115 DEBUG(1, ("setting profiling level: %s\n",profile_level));
1117 set_profile_level(pl, src);
1121 if (!is_daemon && !is_a_socket(0)) {
1123 DEBUG(0,("standard input is not a socket, assuming -D option\n"));
1126 * Setting is_daemon here prevents us from eventually calling
1127 * the open_sockets_inetd()
1133 if (is_daemon && !interactive) {
1134 DEBUG( 3, ( "Becoming a daemon.\n" ) );
1135 become_daemon(Fork, no_process_group, log_stdout);
1138 generate_random_buffer((uint8_t *)&unique_id, sizeof(unique_id));
1139 set_my_unique_id(unique_id);
1143 * If we're interactive we want to set our own process group for
1144 * signal management.
1146 if (interactive && !no_process_group)
1147 setpgid( (pid_t)0, (pid_t)0);
1150 if (!directory_exist(lp_lockdir()))
1151 mkdir(lp_lockdir(), 0755);
1154 pidfile_create("smbd");
1156 status = reinit_after_fork(msg_ctx,
1159 if (!NT_STATUS_IS_OK(status)) {
1160 DEBUG(0,("reinit_after_fork() failed\n"));
1164 smbd_server_conn->msg_ctx = msg_ctx;
1166 parent = talloc_zero(ev_ctx, struct smbd_parent_context);
1168 exit_server("talloc(struct smbd_parent_context) failed");
1170 parent->interactive = interactive;
1171 parent->ev_ctx = ev_ctx;
1172 parent->msg_ctx = msg_ctx;
1175 se = tevent_add_signal(parent->ev_ctx,
1178 smbd_parent_sig_term_handler,
1181 exit_server("failed to setup SIGTERM handler");
1183 se = tevent_add_signal(parent->ev_ctx,
1186 smbd_parent_sig_hup_handler,
1189 exit_server("failed to setup SIGHUP handler");
1192 /* Setup all the TDB's - including CLEAR_IF_FIRST tdb's. */
1194 if (smbd_memcache() == NULL) {
1198 memcache_set_global(smbd_memcache());
1200 /* Initialise the password backed before the global_sam_sid
1201 to ensure that we fetch from ldap before we make a domain sid up */
1203 if(!initialize_password_db(false, ev_ctx))
1206 if (!secrets_init()) {
1207 DEBUG(0, ("ERROR: smbd can not open secrets.tdb\n"));
1211 if (lp_server_role() == ROLE_DOMAIN_BDC || lp_server_role() == ROLE_DOMAIN_PDC) {
1212 struct loadparm_context *lp_ctx = loadparm_init_s3(NULL, loadparm_s3_context());
1213 if (!open_schannel_session_store(NULL, lp_ctx)) {
1214 DEBUG(0,("ERROR: Samba cannot open schannel store for secured NETLOGON operations.\n"));
1217 TALLOC_FREE(lp_ctx);
1220 if(!get_global_sam_sid()) {
1221 DEBUG(0,("ERROR: Samba cannot create a SAM SID.\n"));
1225 if (!sessionid_init()) {
1229 if (!connections_init(True))
1232 if (!locking_init())
1235 if (!messaging_tdb_parent_init(ev_ctx)) {
1239 if (!notify_internal_parent_init(ev_ctx)) {
1243 if (!serverid_parent_init(ev_ctx)) {
1247 if (!W_ERROR_IS_OK(registry_init_full()))
1250 /* Open the share_info.tdb here, so we don't have to open
1251 after the fork on every single connection. This is a small
1252 performance improvment and reduces the total number of system
1254 if (!share_info_db_init()) {
1255 DEBUG(0,("ERROR: failed to load share info db.\n"));
1259 status = init_system_info();
1260 if (!NT_STATUS_IS_OK(status)) {
1261 DEBUG(1, ("ERROR: failed to setup system user info: %s.\n",
1262 nt_errstr(status)));
1266 if (!init_guest_info()) {
1267 DEBUG(0,("ERROR: failed to setup guest info.\n"));
1271 if (!file_init(smbd_server_conn)) {
1272 DEBUG(0, ("ERROR: file_init failed\n"));
1276 /* This MUST be done before start_epmd() because otherwise
1277 * start_epmd() forks and races against dcesrv_ep_setup() to
1278 * call directory_create_or_exist() */
1279 if (!directory_create_or_exist(lp_ncalrpc_dir(), geteuid(), 0755)) {
1280 DEBUG(0, ("Failed to create pipe directory %s - %s\n",
1281 lp_ncalrpc_dir(), strerror(errno)));
1285 if (is_daemon && !interactive) {
1286 if (rpc_epmapper_daemon() == RPC_DAEMON_FORK) {
1287 start_epmd(ev_ctx, msg_ctx);
1291 if (!dcesrv_ep_setup(ev_ctx, msg_ctx)) {
1295 /* only start other daemons if we are running as a daemon
1296 * -- bad things will happen if smbd is launched via inetd
1297 * and we fork a copy of ourselves here */
1298 if (is_daemon && !interactive) {
1300 if (rpc_lsasd_daemon() == RPC_DAEMON_FORK) {
1301 start_lsasd(ev_ctx, msg_ctx);
1304 if (!_lp_disable_spoolss() &&
1305 (rpc_spoolss_daemon() != RPC_DAEMON_DISABLED)) {
1306 bool bgq = lp_parm_bool(-1, "smbd", "backgroundqueue", true);
1308 if (!printing_subsystem_init(ev_ctx, msg_ctx, true, bgq)) {
1312 } else if (!_lp_disable_spoolss() &&
1313 (rpc_spoolss_daemon() != RPC_DAEMON_DISABLED)) {
1314 if (!printing_subsystem_init(ev_ctx, msg_ctx, false, false)) {
1323 /* Started from inetd. fd 0 is the socket. */
1324 /* We will abort gracefully when the client or remote system
1326 smbd_server_conn->sock = dup(0);
1328 /* close our standard file descriptors */
1329 if (!debug_get_output_is_stdout()) {
1330 close_low_fds(False); /* Don't close stderr */
1338 smbd_setup_sig_chld_handler(parent);
1340 smbd_process(ev_ctx, smbd_server_conn);
1342 exit_server_cleanly(NULL);
1346 if (!open_sockets_smbd(parent, ev_ctx, msg_ctx, ports))
1347 exit_server("open_sockets_smbd() failed");
1349 /* do a printer update now that all messaging has been set up,
1350 * before we allow clients to start connecting */
1351 printing_subsystem_update(ev_ctx, msg_ctx, false);
1354 /* make sure we always have a valid stackframe */
1355 frame = talloc_stackframe();
1357 smbd_parent_loop(ev_ctx, parent);
1359 exit_server_cleanly(NULL);