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 smbd_parent_id_cache_kill(struct messaging_context *msg_ctx,
236 struct server_id server_id,
239 const char *msg = (data && data->data)
240 ? (const char *)data->data : "<NULL>";
241 struct id_cache_ref id;
243 if (!id_cache_ref_parse(msg, &id)) {
244 DEBUG(0, ("Invalid ?ID: %s\n", msg));
248 id_cache_delete_from_cache(&id);
250 messaging_send_to_children(msg_ctx, msg_type, data);
253 static void smbd_parent_id_cache_flush(struct messaging_context *ctx,
256 struct server_id srv_id,
259 id_cache_flush_message(ctx, data, msg_type, srv_id, msg_data);
261 messaging_send_to_children(ctx, msg_type, msg_data);
264 static void smbd_parent_id_cache_delete(struct messaging_context *ctx,
267 struct server_id srv_id,
270 id_cache_delete_message(ctx, data, msg_type, srv_id, msg_data);
272 messaging_send_to_children(ctx, msg_type, msg_data);
275 static void add_child_pid(struct smbd_parent_context *parent,
278 struct smbd_child_pid *child;
280 child = talloc_zero(parent, struct smbd_child_pid);
282 DEBUG(0, ("Could not add child struct -- malloc failed\n"));
286 DLIST_ADD(parent->children, child);
287 parent->num_children += 1;
291 at most every smbd:cleanuptime seconds (default 20), we scan the BRL
292 and locking database for entries to cleanup. As a side effect this
293 also cleans up dead entries in the connections database (due to the
294 traversal in message_send_all()
296 Using a timer for this prevents a flood of traversals when a large
297 number of clients disconnect at the same time (perhaps due to a
301 static void cleanup_timeout_fn(struct event_context *event_ctx,
302 struct timed_event *te,
306 struct smbd_parent_context *parent =
307 talloc_get_type_abort(private_data,
308 struct smbd_parent_context);
310 parent->cleanup_te = NULL;
312 DEBUG(1,("Cleaning up brl and lock database after unclean shutdown\n"));
313 message_send_all(parent->msg_ctx, MSG_SMB_UNLOCK, NULL, 0, NULL);
314 messaging_send_buf(parent->msg_ctx,
315 messaging_server_id(parent->msg_ctx),
316 MSG_SMB_BRL_VALIDATE, NULL, 0);
319 static void remove_child_pid(struct smbd_parent_context *parent,
321 bool unclean_shutdown)
323 struct smbd_child_pid *child;
324 struct server_id child_id;
326 if (unclean_shutdown) {
327 /* a child terminated uncleanly so tickle all
328 processes to see if they can grab any of the
331 DEBUG(3,(__location__ " Unclean shutdown of pid %u\n",
333 if (parent->cleanup_te == NULL) {
334 /* call the cleanup timer, but not too often */
335 int cleanup_time = lp_parm_int(-1, "smbd", "cleanuptime", 20);
336 parent->cleanup_te = tevent_add_timer(parent->ev_ctx,
338 timeval_current_ofs(cleanup_time, 0),
341 DEBUG(1,("Scheduled cleanup of brl and lock database after unclean shutdown\n"));
345 child_id = pid_to_procid(pid);
347 if (!serverid_deregister(child_id)) {
348 DEBUG(1, ("Could not remove pid %d from serverid.tdb\n",
352 for (child = parent->children; child != NULL; child = child->next) {
353 if (child->pid == pid) {
354 struct smbd_child_pid *tmp = child;
355 DLIST_REMOVE(parent->children, child);
357 parent->num_children -= 1;
362 /* not all forked child processes are added to the children list */
363 DEBUG(1, ("Could not find child %d -- ignoring\n", (int)pid));
366 /****************************************************************************
367 Have we reached the process limit ?
368 ****************************************************************************/
370 static bool allowable_number_of_smbd_processes(struct smbd_parent_context *parent)
372 int max_processes = lp_max_smbd_processes();
377 return parent->num_children < max_processes;
380 static void smbd_sig_chld_handler(struct tevent_context *ev,
381 struct tevent_signal *se,
389 struct smbd_parent_context *parent =
390 talloc_get_type_abort(private_data,
391 struct smbd_parent_context);
393 while ((pid = sys_waitpid(-1, &status, WNOHANG)) > 0) {
394 bool unclean_shutdown = False;
396 /* If the child terminated normally, assume
397 it was an unclean shutdown unless the
400 if (WIFEXITED(status)) {
401 unclean_shutdown = WEXITSTATUS(status);
403 /* If the child terminated due to a signal
404 we always assume it was unclean.
406 if (WIFSIGNALED(status)) {
407 unclean_shutdown = True;
409 remove_child_pid(parent, pid, unclean_shutdown);
413 static void smbd_setup_sig_chld_handler(struct smbd_parent_context *parent)
415 struct tevent_signal *se;
417 se = tevent_add_signal(parent->ev_ctx,
418 parent, /* mem_ctx */
420 smbd_sig_chld_handler,
423 exit_server("failed to setup SIGCHLD handler");
427 static void smbd_open_socket_close_fn(struct tevent_context *ev,
428 struct tevent_fd *fde,
432 /* this might be the socket_wrapper swrap_close() */
436 static void smbd_accept_connection(struct tevent_context *ev,
437 struct tevent_fd *fde,
441 struct smbd_open_socket *s = talloc_get_type_abort(private_data,
442 struct smbd_open_socket);
443 struct messaging_context *msg_ctx = s->parent->msg_ctx;
444 struct smbd_server_connection *sconn = smbd_server_conn;
445 struct sockaddr_storage addr;
446 socklen_t in_addrlen = sizeof(addr);
451 fd = accept(s->fd, (struct sockaddr *)(void *)&addr,&in_addrlen);
453 if (fd == -1 && errno == EINTR)
457 DEBUG(0,("open_sockets_smbd: accept: %s\n",
462 if (s->parent->interactive) {
463 smbd_process(ev, sconn);
464 exit_server_cleanly("end of interactive mode");
468 if (!allowable_number_of_smbd_processes(s->parent)) {
475 * Generate a unique id in the parent process so that we use
476 * the global random state in the parent.
478 generate_random_buffer((uint8_t *)&unique_id, sizeof(unique_id));
482 NTSTATUS status = NT_STATUS_OK;
488 * Can't use TALLOC_FREE here. Nulling out the argument to it
489 * would overwrite memory we've just freed.
491 talloc_free(s->parent);
494 set_my_unique_id(unique_id);
496 /* Stop zombies, the parent explicitly handles
497 * them, counting worker smbds. */
500 /* close our standard file
502 if (!debug_get_output_is_stdout()) {
503 close_low_fds(False); /* Don't close stderr */
506 status = reinit_after_fork(msg_ctx,
509 if (!NT_STATUS_IS_OK(status)) {
510 if (NT_STATUS_EQUAL(status,
511 NT_STATUS_TOO_MANY_OPENED_FILES)) {
512 DEBUG(0,("child process cannot initialize "
513 "because too many files are open\n"));
516 if (lp_clustering() &&
517 NT_STATUS_EQUAL(status,
518 NT_STATUS_INTERNAL_DB_ERROR)) {
519 DEBUG(1,("child process cannot initialize "
520 "because connection to CTDB "
525 DEBUG(0,("reinit_after_fork() failed\n"));
526 smb_panic("reinit_after_fork() failed");
529 smbd_setup_sig_term_handler(sconn);
530 smbd_setup_sig_hup_handler(sconn);
532 if (!serverid_register(messaging_server_id(msg_ctx),
533 FLAG_MSG_GENERAL|FLAG_MSG_SMBD
535 |FLAG_MSG_PRINT_GENERAL)) {
536 exit_server_cleanly("Could not register myself in "
540 smbd_process(ev, sconn);
542 exit_server_cleanly("end of child");
547 DEBUG(0,("smbd_accept_connection: sys_fork() failed: %s\n",
551 /* The parent doesn't need this socket */
554 /* Sun May 6 18:56:14 2001 ackley@cs.unm.edu:
555 Clear the closed fd info out of server_fd --
556 and more importantly, out of client_fd in
557 util_sock.c, to avoid a possible
558 getpeername failure if we reopen the logs
559 and use %I in the filename.
564 add_child_pid(s->parent, pid);
567 /* Force parent to check log size after
568 * spawning child. Fix from
569 * klausr@ITAP.Physik.Uni-Stuttgart.De. The
570 * parent smbd will log to logserver.smb. It
571 * writes only two messages for each child
572 * started/finished. But each child writes,
573 * say, 50 messages also in logserver.smb,
574 * begining with the debug_count of the
575 * parent, before the child opens its own log
576 * file logserver.client. In a worst case
577 * scenario the size of logserver.smb would be
578 * checked after about 50*50=2500 messages
581 force_check_log_size();
584 static bool smbd_open_one_socket(struct smbd_parent_context *parent,
585 struct tevent_context *ev_ctx,
586 struct messaging_context *msg_ctx,
587 const struct sockaddr_storage *ifss,
590 struct smbd_open_socket *s;
592 s = talloc(parent, struct smbd_open_socket);
598 s->fd = open_socket_in(SOCK_STREAM,
600 parent->sockets == NULL ? 0 : 2,
604 DEBUG(0,("smbd_open_once_socket: open_socket_in: "
605 "%s\n", strerror(errno)));
608 * We ignore an error here, as we've done before
613 /* ready to listen */
614 set_socket_options(s->fd, "SO_KEEPALIVE");
615 set_socket_options(s->fd, lp_socket_options());
617 /* Set server socket to
618 * non-blocking for the accept. */
619 set_blocking(s->fd, False);
621 if (listen(s->fd, SMBD_LISTEN_BACKLOG) == -1) {
622 DEBUG(0,("open_sockets_smbd: listen: "
623 "%s\n", strerror(errno)));
629 s->fde = tevent_add_fd(ev_ctx,
631 s->fd, TEVENT_FD_READ,
632 smbd_accept_connection,
635 DEBUG(0,("open_sockets_smbd: "
636 "tevent_add_fd: %s\n",
642 tevent_fd_set_close_fn(s->fde, smbd_open_socket_close_fn);
644 DLIST_ADD_END(parent->sockets, s, struct smbd_open_socket *);
649 /****************************************************************************
650 Open the socket communication.
651 ****************************************************************************/
653 static bool open_sockets_smbd(struct smbd_parent_context *parent,
654 struct tevent_context *ev_ctx,
655 struct messaging_context *msg_ctx,
656 const char *smb_ports)
658 int num_interfaces = iface_count();
661 unsigned dns_port = 0;
668 smbd_setup_sig_chld_handler(parent);
670 /* use a reasonable default set of ports - listing on 445 and 139 */
672 ports = lp_smb_ports();
673 if (!ports || !*ports) {
674 ports = talloc_strdup(talloc_tos(), SMB_PORTS);
676 ports = talloc_strdup(talloc_tos(), ports);
679 ports = talloc_strdup(talloc_tos(), smb_ports);
682 if (lp_interfaces() && lp_bind_interfaces_only()) {
683 /* We have been given an interfaces line, and been
684 told to only bind to those interfaces. Create a
685 socket per interface and bind to only these.
688 /* Now open a listen socket for each of the
690 for(i = 0; i < num_interfaces; i++) {
691 const struct sockaddr_storage *ifss =
692 iface_n_sockaddr_storage(i);
697 DEBUG(0,("open_sockets_smbd: "
698 "interface %d has NULL IP address !\n",
704 next_token_talloc(talloc_tos(),&ptr, &tok, " \t,");) {
705 unsigned port = atoi(tok);
706 if (port == 0 || port > 0xffff) {
710 /* Keep the first port for mDNS service
717 if (!smbd_open_one_socket(parent,
727 /* Just bind to 0.0.0.0 - accept connections
732 const char *sock_addr = lp_socket_address();
734 const char *sock_ptr;
736 if (strequal(sock_addr, "0.0.0.0") ||
737 strequal(sock_addr, "::")) {
739 sock_addr = "::,0.0.0.0";
741 sock_addr = "0.0.0.0";
745 for (sock_ptr=sock_addr;
746 next_token_talloc(talloc_tos(), &sock_ptr, &sock_tok, " \t,"); ) {
747 for (ptr=ports; next_token_talloc(talloc_tos(), &ptr, &tok, " \t,"); ) {
748 struct sockaddr_storage ss;
750 unsigned port = atoi(tok);
751 if (port == 0 || port > 0xffff) {
755 /* Keep the first port for mDNS service
762 /* open an incoming socket */
763 if (!interpret_string_addr(&ss, sock_tok,
764 AI_NUMERICHOST|AI_PASSIVE)) {
768 if (!smbd_open_one_socket(parent,
779 if (parent->sockets == NULL) {
780 DEBUG(0,("open_sockets_smbd: No "
781 "sockets available to bind to.\n"));
785 /* Setup the main smbd so that we can get messages. Note that
786 do this after starting listening. This is needed as when in
787 clustered mode, ctdb won't allow us to start doing database
788 operations until it has gone thru a full startup, which
789 includes checking to see that smbd is listening. */
791 if (!serverid_register(messaging_server_id(msg_ctx),
792 FLAG_MSG_GENERAL|FLAG_MSG_SMBD
793 |FLAG_MSG_PRINT_GENERAL
795 DEBUG(0, ("open_sockets_smbd: Failed to register "
796 "myself in serverid.tdb\n"));
800 /* Listen to messages */
802 messaging_register(msg_ctx, NULL, MSG_SHUTDOWN, msg_exit_server);
803 messaging_register(msg_ctx, ev_ctx, MSG_SMB_CONF_UPDATED,
805 messaging_register(msg_ctx, NULL, MSG_SMB_STAT_CACHE_DELETE,
806 smb_stat_cache_delete);
807 messaging_register(msg_ctx, NULL, MSG_DEBUG, smbd_msg_debug);
808 messaging_register(msg_ctx, ev_ctx, MSG_PRINTER_PCAP,
810 messaging_register(msg_ctx, NULL, MSG_SMB_BRL_VALIDATE,
813 messaging_register(msg_ctx, NULL,
814 ID_CACHE_FLUSH, smbd_parent_id_cache_flush);
815 messaging_register(msg_ctx, NULL,
816 ID_CACHE_DELETE, smbd_parent_id_cache_delete);
817 messaging_register(msg_ctx, NULL,
818 ID_CACHE_KILL, smbd_parent_id_cache_kill);
820 #ifdef CLUSTER_SUPPORT
821 if (lp_clustering()) {
822 ctdbd_register_reconfigure(messaging_ctdbd_connection());
827 messaging_register(msg_ctx, NULL, MSG_SMB_INJECT_FAULT,
831 if (lp_multicast_dns_register() && (dns_port != 0)) {
832 #ifdef WITH_DNSSD_SUPPORT
833 smbd_setup_mdns_registration(ev_ctx,
836 #ifdef WITH_AVAHI_SUPPORT
839 avahi_conn = avahi_start_register(ev_ctx,
842 if (avahi_conn == NULL) {
843 DEBUG(10, ("avahi_start_register failed\n"));
851 static void smbd_parent_loop(struct tevent_context *ev_ctx,
852 struct smbd_parent_context *parent)
854 /* now accept incoming connections - forking a new process
855 for each incoming connection */
856 DEBUG(2,("waiting for connections\n"));
859 TALLOC_CTX *frame = talloc_stackframe();
861 ret = tevent_loop_once(ev_ctx);
863 exit_server_cleanly("tevent_loop_once() error");
869 /* NOTREACHED return True; */
873 /****************************************************************************
874 Initialise connect, service and file structs.
875 ****************************************************************************/
877 static bool init_structs(void )
880 * Set the machine NETBIOS name if not already
881 * set from the config file.
893 static void smbd_parent_sig_term_handler(struct tevent_context *ev,
894 struct tevent_signal *se,
900 exit_server_cleanly("termination signal");
903 static void smbd_parent_sig_hup_handler(struct tevent_context *ev,
904 struct tevent_signal *se,
910 struct smbd_parent_context *parent =
911 talloc_get_type_abort(private_data,
912 struct smbd_parent_context);
914 change_to_root_user();
915 DEBUG(1,("parent: Reloading services after SIGHUP\n"));
916 reload_services(parent->msg_ctx, -1, false);
918 printing_subsystem_update(parent->ev_ctx, parent->msg_ctx, true);
921 /****************************************************************************
923 ****************************************************************************/
925 /* Declare prototype for build_options() to avoid having to run it through
926 mkproto.h. Mixing $(builddir) and $(srcdir) source files in the current
927 prototype generation system is too complicated. */
929 extern void build_options(bool screen);
931 int main(int argc,const char *argv[])
933 /* shall I run as a daemon */
934 bool is_daemon = false;
935 bool interactive = false;
937 bool no_process_group = false;
938 bool log_stdout = false;
940 char *profile_level = NULL;
943 bool print_build_options = False;
948 OPT_NO_PROCESS_GROUP,
951 struct poptOption long_options[] = {
953 {"daemon", 'D', POPT_ARG_NONE, NULL, OPT_DAEMON, "Become a daemon (default)" },
954 {"interactive", 'i', POPT_ARG_NONE, NULL, OPT_INTERACTIVE, "Run interactive (not a daemon)"},
955 {"foreground", 'F', POPT_ARG_NONE, NULL, OPT_FORK, "Run daemon in foreground (for daemontools, etc.)" },
956 {"no-process-group", '\0', POPT_ARG_NONE, NULL, OPT_NO_PROCESS_GROUP, "Don't create a new process group" },
957 {"log-stdout", 'S', POPT_ARG_NONE, NULL, OPT_LOG_STDOUT, "Log to stdout" },
958 {"build-options", 'b', POPT_ARG_NONE, NULL, 'b', "Print build options" },
959 {"port", 'p', POPT_ARG_STRING, &ports, 0, "Listen on the specified ports"},
960 {"profiling-level", 'P', POPT_ARG_STRING, &profile_level, 0, "Set profiling level","PROFILE_LEVEL"},
962 POPT_COMMON_DYNCONFIG
965 struct smbd_parent_context *parent = NULL;
969 struct tevent_context *ev_ctx;
970 struct messaging_context *msg_ctx;
971 struct tevent_signal *se;
974 * Do this before any other talloc operation
976 talloc_enable_null_tracking();
977 frame = talloc_stackframe();
979 setup_logging(argv[0], DEBUG_DEFAULT_STDOUT);
987 #ifdef HAVE_SET_AUTH_PARAMETERS
988 set_auth_parameters(argc,argv);
991 pc = poptGetContext("smbd", argc, argv, long_options, 0);
992 while((opt = poptGetNextOpt(pc)) != -1) {
997 case OPT_INTERACTIVE:
1003 case OPT_NO_PROCESS_GROUP:
1004 no_process_group = true;
1006 case OPT_LOG_STDOUT:
1010 print_build_options = True;
1013 d_fprintf(stderr, "\nInvalid option %s: %s\n\n",
1014 poptBadOption(pc, 0), poptStrerror(opt));
1015 poptPrintUsage(pc, stderr, 0);
1019 poptFreeContext(pc);
1027 setup_logging(argv[0], DEBUG_STDOUT);
1029 setup_logging(argv[0], DEBUG_FILE);
1032 if (print_build_options) {
1033 build_options(True); /* Display output to screen as well as debug */
1038 /* needed for SecureWare on SCO */
1042 set_remote_machine_name("smbd", False);
1044 if (interactive && (DEBUGLEVEL >= 9)) {
1045 talloc_enable_leak_report();
1048 if (log_stdout && Fork) {
1049 DEBUG(0,("ERROR: Can't log to stdout (-S) unless daemon is in foreground (-F) or interactive (-i)\n"));
1053 /* we want to re-seed early to prevent time delays causing
1054 client problems at a later date. (tridge) */
1055 generate_random_buffer(NULL, 0);
1057 /* get initial effective uid and gid */
1060 /* make absolutely sure we run as root - to handle cases where people
1061 are crazy enough to have it setuid */
1062 gain_root_privilege();
1063 gain_root_group_privilege();
1066 dump_core_setup("smbd", lp_logfile());
1068 /* we are never interested in SIGPIPE */
1069 BlockSignals(True,SIGPIPE);
1072 /* we are never interested in SIGFPE */
1073 BlockSignals(True,SIGFPE);
1076 #if defined(SIGUSR2)
1077 /* We are no longer interested in USR2 */
1078 BlockSignals(True,SIGUSR2);
1081 /* POSIX demands that signals are inherited. If the invoking process has
1082 * these signals masked, we will have problems, as we won't recieve them. */
1083 BlockSignals(False, SIGHUP);
1084 BlockSignals(False, SIGUSR1);
1085 BlockSignals(False, SIGTERM);
1087 /* Ensure we leave no zombies until we
1088 * correctly set up child handling below. */
1092 /* we want total control over the permissions on created files,
1093 so set our umask to 0 */
1098 DEBUG(0,("smbd version %s started.\n", samba_version_string()));
1099 DEBUGADD(0,("%s\n", COPYRIGHT_STARTUP_MESSAGE));
1101 DEBUG(2,("uid=%d gid=%d euid=%d egid=%d\n",
1102 (int)getuid(),(int)getgid(),(int)geteuid(),(int)getegid()));
1104 /* Output the build options to the debug log */
1105 build_options(False);
1107 if (sizeof(uint16) < 2 || sizeof(uint32) < 4) {
1108 DEBUG(0,("ERROR: Samba is not configured correctly for the word size on your machine\n"));
1112 if (!lp_load_initial_only(get_dyn_CONFIGFILE())) {
1113 DEBUG(0, ("error opening config file '%s'\n", get_dyn_CONFIGFILE()));
1117 /* Init the security context and global current_user */
1121 * Initialize the event context. The event context needs to be
1122 * initialized before the messaging context, cause the messaging
1123 * context holds an event context.
1124 * FIXME: This should be s3_tevent_context_init()
1126 ev_ctx = server_event_context();
1127 if (ev_ctx == NULL) {
1132 * Init the messaging context
1133 * FIXME: This should only call messaging_init()
1135 msg_ctx = server_messaging_context();
1136 if (msg_ctx == NULL) {
1141 * Reloading of the printers will not work here as we don't have a
1142 * server info and rpc services set up. It will be called later.
1144 if (!reload_services(NULL, -1, False)) {
1148 /* ...NOTE... Log files are working from this point! */
1150 DEBUG(3,("loaded services\n"));
1155 if (!profile_setup(msg_ctx, False)) {
1156 DEBUG(0,("ERROR: failed to setup profiling\n"));
1159 if (profile_level != NULL) {
1160 int pl = atoi(profile_level);
1161 struct server_id src;
1163 DEBUG(1, ("setting profiling level: %s\n",profile_level));
1165 set_profile_level(pl, src);
1169 if (!is_daemon && !is_a_socket(0)) {
1171 DEBUG(0,("standard input is not a socket, assuming -D option\n"));
1174 * Setting is_daemon here prevents us from eventually calling
1175 * the open_sockets_inetd()
1181 if (is_daemon && !interactive) {
1182 DEBUG( 3, ( "Becoming a daemon.\n" ) );
1183 become_daemon(Fork, no_process_group, log_stdout);
1186 generate_random_buffer((uint8_t *)&unique_id, sizeof(unique_id));
1187 set_my_unique_id(unique_id);
1191 * If we're interactive we want to set our own process group for
1192 * signal management.
1194 if (interactive && !no_process_group)
1195 setpgid( (pid_t)0, (pid_t)0);
1198 if (!directory_exist(lp_lockdir()))
1199 mkdir(lp_lockdir(), 0755);
1202 pidfile_create("smbd");
1204 status = reinit_after_fork(msg_ctx,
1207 if (!NT_STATUS_IS_OK(status)) {
1208 DEBUG(0,("reinit_after_fork() failed\n"));
1212 smbd_server_conn->msg_ctx = msg_ctx;
1214 parent = talloc_zero(ev_ctx, struct smbd_parent_context);
1216 exit_server("talloc(struct smbd_parent_context) failed");
1218 parent->interactive = interactive;
1219 parent->ev_ctx = ev_ctx;
1220 parent->msg_ctx = msg_ctx;
1223 se = tevent_add_signal(parent->ev_ctx,
1226 smbd_parent_sig_term_handler,
1229 exit_server("failed to setup SIGTERM handler");
1231 se = tevent_add_signal(parent->ev_ctx,
1234 smbd_parent_sig_hup_handler,
1237 exit_server("failed to setup SIGHUP handler");
1240 /* Setup all the TDB's - including CLEAR_IF_FIRST tdb's. */
1242 if (smbd_memcache() == NULL) {
1246 memcache_set_global(smbd_memcache());
1248 /* Initialise the password backed before the global_sam_sid
1249 to ensure that we fetch from ldap before we make a domain sid up */
1251 if(!initialize_password_db(false, ev_ctx))
1254 if (!secrets_init()) {
1255 DEBUG(0, ("ERROR: smbd can not open secrets.tdb\n"));
1259 if (lp_server_role() == ROLE_DOMAIN_BDC || lp_server_role() == ROLE_DOMAIN_PDC) {
1260 struct loadparm_context *lp_ctx = loadparm_init_s3(NULL, loadparm_s3_context());
1261 if (!open_schannel_session_store(NULL, lp_ctx)) {
1262 DEBUG(0,("ERROR: Samba cannot open schannel store for secured NETLOGON operations.\n"));
1265 TALLOC_FREE(lp_ctx);
1268 if(!get_global_sam_sid()) {
1269 DEBUG(0,("ERROR: Samba cannot create a SAM SID.\n"));
1273 if (!sessionid_init()) {
1277 if (!connections_init(True))
1280 if (!locking_init())
1283 if (!messaging_tdb_parent_init(ev_ctx)) {
1287 if (!notify_internal_parent_init(ev_ctx)) {
1291 if (!serverid_parent_init(ev_ctx)) {
1295 if (!W_ERROR_IS_OK(registry_init_full()))
1298 /* Open the share_info.tdb here, so we don't have to open
1299 after the fork on every single connection. This is a small
1300 performance improvment and reduces the total number of system
1302 if (!share_info_db_init()) {
1303 DEBUG(0,("ERROR: failed to load share info db.\n"));
1307 status = init_system_info();
1308 if (!NT_STATUS_IS_OK(status)) {
1309 DEBUG(1, ("ERROR: failed to setup system user info: %s.\n",
1310 nt_errstr(status)));
1314 if (!init_guest_info()) {
1315 DEBUG(0,("ERROR: failed to setup guest info.\n"));
1319 if (!file_init(smbd_server_conn)) {
1320 DEBUG(0, ("ERROR: file_init failed\n"));
1324 /* This MUST be done before start_epmd() because otherwise
1325 * start_epmd() forks and races against dcesrv_ep_setup() to
1326 * call directory_create_or_exist() */
1327 if (!directory_create_or_exist(lp_ncalrpc_dir(), geteuid(), 0755)) {
1328 DEBUG(0, ("Failed to create pipe directory %s - %s\n",
1329 lp_ncalrpc_dir(), strerror(errno)));
1333 if (is_daemon && !interactive) {
1334 if (rpc_epmapper_daemon() == RPC_DAEMON_FORK) {
1335 start_epmd(ev_ctx, msg_ctx);
1339 if (!dcesrv_ep_setup(ev_ctx, msg_ctx)) {
1343 /* only start other daemons if we are running as a daemon
1344 * -- bad things will happen if smbd is launched via inetd
1345 * and we fork a copy of ourselves here */
1346 if (is_daemon && !interactive) {
1348 if (rpc_lsasd_daemon() == RPC_DAEMON_FORK) {
1349 start_lsasd(ev_ctx, msg_ctx);
1352 if (!_lp_disable_spoolss() &&
1353 (rpc_spoolss_daemon() != RPC_DAEMON_DISABLED)) {
1354 bool bgq = lp_parm_bool(-1, "smbd", "backgroundqueue", true);
1356 if (!printing_subsystem_init(ev_ctx, msg_ctx, true, bgq)) {
1360 } else if (!_lp_disable_spoolss() &&
1361 (rpc_spoolss_daemon() != RPC_DAEMON_DISABLED)) {
1362 if (!printing_subsystem_init(ev_ctx, msg_ctx, false, false)) {
1371 /* Started from inetd. fd 0 is the socket. */
1372 /* We will abort gracefully when the client or remote system
1374 smbd_server_conn->sock = dup(0);
1376 /* close our standard file descriptors */
1377 if (!debug_get_output_is_stdout()) {
1378 close_low_fds(False); /* Don't close stderr */
1386 smbd_setup_sig_chld_handler(parent);
1388 smbd_process(ev_ctx, smbd_server_conn);
1390 exit_server_cleanly(NULL);
1394 if (!open_sockets_smbd(parent, ev_ctx, msg_ctx, ports))
1395 exit_server("open_sockets_smbd() failed");
1397 /* do a printer update now that all messaging has been set up,
1398 * before we allow clients to start connecting */
1399 printing_subsystem_update(ev_ctx, msg_ctx, false);
1402 /* make sure we always have a valid stackframe */
1403 frame = talloc_stackframe();
1405 smbd_parent_loop(ev_ctx, parent);
1407 exit_server_cleanly(NULL);