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"
44 #include "lib/background.h"
45 #include "lib/conn_tdb.h"
46 #include "../lib/util/pidfile.h"
48 struct smbd_open_socket;
49 struct smbd_child_pid;
51 struct smbd_parent_context {
54 struct tevent_context *ev_ctx;
55 struct messaging_context *msg_ctx;
57 /* the list of listening sockets */
58 struct smbd_open_socket *sockets;
60 /* the list of current child processes */
61 struct smbd_child_pid *children;
64 struct timed_event *cleanup_te;
67 struct smbd_open_socket {
68 struct smbd_open_socket *prev, *next;
69 struct smbd_parent_context *parent;
71 struct tevent_fd *fde;
74 struct smbd_child_pid {
75 struct smbd_child_pid *prev, *next;
79 extern void start_epmd(struct tevent_context *ev_ctx,
80 struct messaging_context *msg_ctx);
82 extern void start_lsasd(struct event_context *ev_ctx,
83 struct messaging_context *msg_ctx);
86 extern int dcelogin_atmost_once;
89 /*******************************************************************
90 What to do when smb.conf is updated.
91 ********************************************************************/
93 static void smbd_parent_conf_updated(struct messaging_context *msg,
96 struct server_id server_id,
99 struct tevent_context *ev_ctx =
100 talloc_get_type_abort(private_data, struct tevent_context);
102 DEBUG(10,("smbd_parent_conf_updated: Got message saying smb.conf was "
103 "updated. Reloading.\n"));
104 change_to_root_user();
105 reload_services(NULL, NULL, false);
106 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));
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_delete(struct messaging_context *ctx,
256 struct server_id srv_id,
259 id_cache_delete_message(ctx, data, msg_type, srv_id, msg_data);
261 messaging_send_to_children(ctx, msg_type, msg_data);
264 struct smbd_parent_notify_state {
265 struct tevent_context *ev;
266 struct messaging_context *msg;
268 struct notify_context *notify;
271 static int smbd_parent_notify_cleanup(void *private_data);
272 static void smbd_parent_notify_cleanup_done(struct tevent_req *req);
273 static void smbd_parent_notify_proxy_done(struct tevent_req *req);
275 static bool smbd_parent_notify_init(TALLOC_CTX *mem_ctx,
276 struct messaging_context *msg,
277 struct tevent_context *ev)
279 struct smbd_parent_notify_state *state;
280 struct tevent_req *req;
282 state = talloc(mem_ctx, struct smbd_parent_notify_state);
288 state->msgtype = MSG_SMB_NOTIFY_CLEANUP;
290 state->notify = notify_init(state, msg, ev);
291 if (state->notify == NULL) {
294 req = background_job_send(
295 state, state->ev, state->msg, &state->msgtype, 1,
296 lp_parm_int(-1, "smbd", "notify cleanup interval", 60),
297 smbd_parent_notify_cleanup, state->notify);
301 tevent_req_set_callback(req, smbd_parent_notify_cleanup_done, state);
303 if (!lp_clustering()) {
307 req = notify_cluster_proxy_send(state, ev, state->notify);
311 tevent_req_set_callback(req, smbd_parent_notify_proxy_done, state);
319 static int smbd_parent_notify_cleanup(void *private_data)
321 struct notify_context *notify = talloc_get_type_abort(
322 private_data, struct notify_context);
323 notify_cleanup(notify);
324 return lp_parm_int(-1, "smbd", "notify cleanup interval", 60);
327 static void smbd_parent_notify_cleanup_done(struct tevent_req *req)
329 struct smbd_parent_notify_state *state = tevent_req_callback_data(
330 req, struct smbd_parent_notify_state);
333 status = background_job_recv(req);
335 DEBUG(1, ("notify cleanup job ended with %s\n", nt_errstr(status)));
338 * Provide self-healing: Whatever the error condition was, it
339 * will have printed it into log.smbd. Just retrying and
340 * spamming log.smbd once a minute should be fine.
342 req = background_job_send(
343 state, state->ev, state->msg, &state->msgtype, 1, 60,
344 smbd_parent_notify_cleanup, state->notify);
346 DEBUG(1, ("background_job_send failed\n"));
349 tevent_req_set_callback(req, smbd_parent_notify_cleanup_done, state);
352 static void smbd_parent_notify_proxy_done(struct tevent_req *req)
356 ret = notify_cluster_proxy_recv(req);
358 DEBUG(1, ("notify proxy job ended with %s\n", strerror(ret)));
361 static void smb_parent_force_tdis(struct messaging_context *ctx,
364 struct server_id srv_id,
367 messaging_send_to_children(ctx, msg_type, msg_data);
370 static void add_child_pid(struct smbd_parent_context *parent,
373 struct smbd_child_pid *child;
375 child = talloc_zero(parent, struct smbd_child_pid);
377 DEBUG(0, ("Could not add child struct -- malloc failed\n"));
381 DLIST_ADD(parent->children, child);
382 parent->num_children += 1;
386 at most every smbd:cleanuptime seconds (default 20), we scan the BRL
387 and locking database for entries to cleanup. As a side effect this
388 also cleans up dead entries in the connections database (due to the
389 traversal in message_send_all()
391 Using a timer for this prevents a flood of traversals when a large
392 number of clients disconnect at the same time (perhaps due to a
396 static void cleanup_timeout_fn(struct event_context *event_ctx,
397 struct timed_event *te,
401 struct smbd_parent_context *parent =
402 talloc_get_type_abort(private_data,
403 struct smbd_parent_context);
405 parent->cleanup_te = NULL;
407 DEBUG(1,("Cleaning up brl and lock database after unclean shutdown\n"));
408 message_send_all(parent->msg_ctx, MSG_SMB_UNLOCK, NULL, 0, NULL);
409 messaging_send_buf(parent->msg_ctx,
410 messaging_server_id(parent->msg_ctx),
411 MSG_SMB_BRL_VALIDATE, NULL, 0);
414 static void remove_child_pid(struct smbd_parent_context *parent,
416 bool unclean_shutdown)
418 struct smbd_child_pid *child;
419 struct server_id child_id;
421 child_id = pid_to_procid(pid);
423 for (child = parent->children; child != NULL; child = child->next) {
424 if (child->pid == pid) {
425 struct smbd_child_pid *tmp = child;
426 DLIST_REMOVE(parent->children, child);
428 parent->num_children -= 1;
434 /* not all forked child processes are added to the children list */
435 DEBUG(2, ("Could not find child %d -- ignoring\n", (int)pid));
439 if (unclean_shutdown) {
440 /* a child terminated uncleanly so tickle all
441 processes to see if they can grab any of the
444 DEBUG(3,(__location__ " Unclean shutdown of pid %u\n",
446 if (parent->cleanup_te == NULL) {
447 /* call the cleanup timer, but not too often */
448 int cleanup_time = lp_parm_int(-1, "smbd", "cleanuptime", 20);
449 parent->cleanup_te = tevent_add_timer(parent->ev_ctx,
451 timeval_current_ofs(cleanup_time, 0),
454 DEBUG(1,("Scheduled cleanup of brl and lock database after unclean shutdown\n"));
458 if (!serverid_deregister(child_id)) {
459 DEBUG(1, ("Could not remove pid %d from serverid.tdb\n",
464 /****************************************************************************
465 Have we reached the process limit ?
466 ****************************************************************************/
468 static bool allowable_number_of_smbd_processes(struct smbd_parent_context *parent)
470 int max_processes = lp_max_smbd_processes();
475 return parent->num_children < max_processes;
478 static void smbd_sig_chld_handler(struct tevent_context *ev,
479 struct tevent_signal *se,
487 struct smbd_parent_context *parent =
488 talloc_get_type_abort(private_data,
489 struct smbd_parent_context);
491 while ((pid = sys_waitpid(-1, &status, WNOHANG)) > 0) {
492 bool unclean_shutdown = False;
494 /* If the child terminated normally, assume
495 it was an unclean shutdown unless the
498 if (WIFEXITED(status)) {
499 unclean_shutdown = WEXITSTATUS(status);
501 /* If the child terminated due to a signal
502 we always assume it was unclean.
504 if (WIFSIGNALED(status)) {
505 unclean_shutdown = True;
507 remove_child_pid(parent, pid, unclean_shutdown);
511 static void smbd_setup_sig_chld_handler(struct smbd_parent_context *parent)
513 struct tevent_signal *se;
515 se = tevent_add_signal(parent->ev_ctx,
516 parent, /* mem_ctx */
518 smbd_sig_chld_handler,
521 exit_server("failed to setup SIGCHLD handler");
525 static void smbd_open_socket_close_fn(struct tevent_context *ev,
526 struct tevent_fd *fde,
530 /* this might be the socket_wrapper swrap_close() */
534 static void smbd_accept_connection(struct tevent_context *ev,
535 struct tevent_fd *fde,
539 struct smbd_open_socket *s = talloc_get_type_abort(private_data,
540 struct smbd_open_socket);
541 struct messaging_context *msg_ctx = s->parent->msg_ctx;
542 struct sockaddr_storage addr;
543 socklen_t in_addrlen = sizeof(addr);
548 fd = accept(s->fd, (struct sockaddr *)(void *)&addr,&in_addrlen);
549 if (fd == -1 && errno == EINTR)
553 DEBUG(0,("open_sockets_smbd: accept: %s\n",
558 if (s->parent->interactive) {
559 reinit_after_fork(msg_ctx, ev, true);
560 smbd_process(ev, msg_ctx, fd, true);
561 exit_server_cleanly("end of interactive mode");
565 if (!allowable_number_of_smbd_processes(s->parent)) {
571 * Generate a unique id in the parent process so that we use
572 * the global random state in the parent.
574 unique_id = serverid_get_random_unique_id();
578 NTSTATUS status = NT_STATUS_OK;
584 * Can't use TALLOC_FREE here. Nulling out the argument to it
585 * would overwrite memory we've just freed.
587 talloc_free(s->parent);
590 set_my_unique_id(unique_id);
592 /* Stop zombies, the parent explicitly handles
593 * them, counting worker smbds. */
596 status = reinit_after_fork(msg_ctx,
599 if (!NT_STATUS_IS_OK(status)) {
600 if (NT_STATUS_EQUAL(status,
601 NT_STATUS_TOO_MANY_OPENED_FILES)) {
602 DEBUG(0,("child process cannot initialize "
603 "because too many files are open\n"));
606 if (lp_clustering() &&
607 NT_STATUS_EQUAL(status,
608 NT_STATUS_INTERNAL_DB_ERROR)) {
609 DEBUG(1,("child process cannot initialize "
610 "because connection to CTDB "
615 DEBUG(0,("reinit_after_fork() failed\n"));
616 smb_panic("reinit_after_fork() failed");
619 smbd_process(ev, msg_ctx, fd, false);
621 exit_server_cleanly("end of child");
626 DEBUG(0,("smbd_accept_connection: fork() failed: %s\n",
630 /* The parent doesn't need this socket */
633 /* Sun May 6 18:56:14 2001 ackley@cs.unm.edu:
634 Clear the closed fd info out of server_fd --
635 and more importantly, out of client_fd in
636 util_sock.c, to avoid a possible
637 getpeername failure if we reopen the logs
638 and use %I in the filename.
642 add_child_pid(s->parent, pid);
645 /* Force parent to check log size after
646 * spawning child. Fix from
647 * klausr@ITAP.Physik.Uni-Stuttgart.De. The
648 * parent smbd will log to logserver.smb. It
649 * writes only two messages for each child
650 * started/finished. But each child writes,
651 * say, 50 messages also in logserver.smb,
652 * begining with the debug_count of the
653 * parent, before the child opens its own log
654 * file logserver.client. In a worst case
655 * scenario the size of logserver.smb would be
656 * checked after about 50*50=2500 messages
659 force_check_log_size();
662 static bool smbd_open_one_socket(struct smbd_parent_context *parent,
663 struct tevent_context *ev_ctx,
664 struct messaging_context *msg_ctx,
665 const struct sockaddr_storage *ifss,
668 struct smbd_open_socket *s;
670 s = talloc(parent, struct smbd_open_socket);
676 s->fd = open_socket_in(SOCK_STREAM,
678 parent->sockets == NULL ? 0 : 2,
682 DEBUG(0,("smbd_open_once_socket: open_socket_in: "
683 "%s\n", strerror(errno)));
686 * We ignore an error here, as we've done before
691 /* ready to listen */
692 set_socket_options(s->fd, "SO_KEEPALIVE");
693 set_socket_options(s->fd, lp_socket_options());
695 /* Set server socket to
696 * non-blocking for the accept. */
697 set_blocking(s->fd, False);
699 if (listen(s->fd, SMBD_LISTEN_BACKLOG) == -1) {
700 DEBUG(0,("open_sockets_smbd: listen: "
701 "%s\n", strerror(errno)));
707 s->fde = tevent_add_fd(ev_ctx,
709 s->fd, TEVENT_FD_READ,
710 smbd_accept_connection,
713 DEBUG(0,("open_sockets_smbd: "
714 "tevent_add_fd: %s\n",
720 tevent_fd_set_close_fn(s->fde, smbd_open_socket_close_fn);
722 DLIST_ADD_END(parent->sockets, s, struct smbd_open_socket *);
727 /****************************************************************************
728 Open the socket communication.
729 ****************************************************************************/
731 static bool open_sockets_smbd(struct smbd_parent_context *parent,
732 struct tevent_context *ev_ctx,
733 struct messaging_context *msg_ctx,
734 const char *smb_ports)
736 int num_interfaces = iface_count();
739 unsigned dns_port = 0;
746 smbd_setup_sig_chld_handler(parent);
748 ports = lp_smb_ports();
750 /* use a reasonable default set of ports - listing on 445 and 139 */
752 ports = (const char **)str_list_make_v3(talloc_tos(), smb_ports, NULL);
755 if (lp_interfaces() && lp_bind_interfaces_only()) {
756 /* We have been given an interfaces line, and been
757 told to only bind to those interfaces. Create a
758 socket per interface and bind to only these.
761 /* Now open a listen socket for each of the
763 for(i = 0; i < num_interfaces; i++) {
764 const struct sockaddr_storage *ifss =
765 iface_n_sockaddr_storage(i);
767 DEBUG(0,("open_sockets_smbd: "
768 "interface %d has NULL IP address !\n",
773 for (j = 0; ports && ports[j]; j++) {
774 unsigned port = atoi(ports[j]);
775 if (port == 0 || port > 0xffff) {
779 /* Keep the first port for mDNS service
786 if (!smbd_open_one_socket(parent,
796 /* Just bind to 0.0.0.0 - accept connections
799 const char *sock_addr;
801 const char *sock_ptr;
804 sock_addr = "::,0.0.0.0";
806 sock_addr = "0.0.0.0";
809 for (sock_ptr=sock_addr;
810 next_token_talloc(talloc_tos(), &sock_ptr, &sock_tok, " \t,"); ) {
811 for (j = 0; ports && ports[j]; j++) {
812 struct sockaddr_storage ss;
814 unsigned port = atoi(ports[j]);
815 if (port == 0 || port > 0xffff) {
819 /* Keep the first port for mDNS service
826 /* open an incoming socket */
827 if (!interpret_string_addr(&ss, sock_tok,
828 AI_NUMERICHOST|AI_PASSIVE)) {
832 if (!smbd_open_one_socket(parent,
843 if (parent->sockets == NULL) {
844 DEBUG(0,("open_sockets_smbd: No "
845 "sockets available to bind to.\n"));
849 /* Setup the main smbd so that we can get messages. Note that
850 do this after starting listening. This is needed as when in
851 clustered mode, ctdb won't allow us to start doing database
852 operations until it has gone thru a full startup, which
853 includes checking to see that smbd is listening. */
855 if (!serverid_register(messaging_server_id(msg_ctx),
856 FLAG_MSG_GENERAL|FLAG_MSG_SMBD
857 |FLAG_MSG_PRINT_GENERAL
859 DEBUG(0, ("open_sockets_smbd: Failed to register "
860 "myself in serverid.tdb\n"));
864 /* Listen to messages */
866 messaging_register(msg_ctx, NULL, MSG_SHUTDOWN, msg_exit_server);
867 messaging_register(msg_ctx, ev_ctx, MSG_SMB_CONF_UPDATED,
868 smbd_parent_conf_updated);
869 messaging_register(msg_ctx, NULL, MSG_SMB_STAT_CACHE_DELETE,
870 smb_stat_cache_delete);
871 messaging_register(msg_ctx, NULL, MSG_DEBUG, smbd_msg_debug);
872 messaging_register(msg_ctx, ev_ctx, MSG_PRINTER_PCAP,
874 messaging_register(msg_ctx, NULL, MSG_SMB_BRL_VALIDATE,
876 messaging_register(msg_ctx, NULL, MSG_SMB_FORCE_TDIS,
877 smb_parent_force_tdis);
879 messaging_register(msg_ctx, NULL,
880 ID_CACHE_DELETE, smbd_parent_id_cache_delete);
881 messaging_register(msg_ctx, NULL,
882 ID_CACHE_KILL, smbd_parent_id_cache_kill);
884 #ifdef CLUSTER_SUPPORT
885 if (lp_clustering()) {
886 ctdbd_register_reconfigure(messaging_ctdbd_connection());
891 messaging_register(msg_ctx, NULL, MSG_SMB_INJECT_FAULT,
895 if (lp_multicast_dns_register() && (dns_port != 0)) {
896 #ifdef WITH_DNSSD_SUPPORT
897 smbd_setup_mdns_registration(ev_ctx,
900 #ifdef WITH_AVAHI_SUPPORT
903 avahi_conn = avahi_start_register(ev_ctx,
906 if (avahi_conn == NULL) {
907 DEBUG(10, ("avahi_start_register failed\n"));
917 handle stdin becoming readable when we are in --foreground mode
919 static void smbd_stdin_handler(struct tevent_context *ev,
920 struct tevent_fd *fde,
925 if (read(0, &c, 1) != 1) {
926 /* we have reached EOF on stdin, which means the
927 parent has exited. Shutdown the server */
928 exit_server_cleanly("EOF on stdin");
932 static void smbd_parent_loop(struct tevent_context *ev_ctx,
933 struct smbd_parent_context *parent)
935 /* now accept incoming connections - forking a new process
936 for each incoming connection */
937 DEBUG(2,("waiting for connections\n"));
940 TALLOC_CTX *frame = talloc_stackframe();
942 ret = tevent_loop_once(ev_ctx);
944 exit_server_cleanly("tevent_loop_once() error");
950 /* NOTREACHED return True; */
954 /****************************************************************************
955 Initialise connect, service and file structs.
956 ****************************************************************************/
958 static bool init_structs(void )
961 * Set the machine NETBIOS name if not already
962 * set from the config file.
974 static void smbd_parent_sig_term_handler(struct tevent_context *ev,
975 struct tevent_signal *se,
981 exit_server_cleanly("termination signal");
984 static void smbd_parent_sig_hup_handler(struct tevent_context *ev,
985 struct tevent_signal *se,
991 struct smbd_parent_context *parent =
992 talloc_get_type_abort(private_data,
993 struct smbd_parent_context);
995 change_to_root_user();
996 DEBUG(1,("parent: Reloading services after SIGHUP\n"));
997 reload_services(NULL, NULL, false);
999 printing_subsystem_update(parent->ev_ctx, parent->msg_ctx, true);
1002 /****************************************************************************
1004 ****************************************************************************/
1006 /* Declare prototype for build_options() to avoid having to run it through
1007 mkproto.h. Mixing $(builddir) and $(srcdir) source files in the current
1008 prototype generation system is too complicated. */
1010 extern void build_options(bool screen);
1012 int main(int argc,const char *argv[])
1014 /* shall I run as a daemon */
1015 bool is_daemon = false;
1016 bool interactive = false;
1018 bool no_process_group = false;
1019 bool log_stdout = false;
1021 char *profile_level = NULL;
1024 bool print_build_options = False;
1029 OPT_NO_PROCESS_GROUP,
1032 struct poptOption long_options[] = {
1034 {"daemon", 'D', POPT_ARG_NONE, NULL, OPT_DAEMON, "Become a daemon (default)" },
1035 {"interactive", 'i', POPT_ARG_NONE, NULL, OPT_INTERACTIVE, "Run interactive (not a daemon)"},
1036 {"foreground", 'F', POPT_ARG_NONE, NULL, OPT_FORK, "Run daemon in foreground (for daemontools, etc.)" },
1037 {"no-process-group", '\0', POPT_ARG_NONE, NULL, OPT_NO_PROCESS_GROUP, "Don't create a new process group" },
1038 {"log-stdout", 'S', POPT_ARG_NONE, NULL, OPT_LOG_STDOUT, "Log to stdout" },
1039 {"build-options", 'b', POPT_ARG_NONE, NULL, 'b', "Print build options" },
1040 {"port", 'p', POPT_ARG_STRING, &ports, 0, "Listen on the specified ports"},
1041 {"profiling-level", 'P', POPT_ARG_STRING, &profile_level, 0, "Set profiling level","PROFILE_LEVEL"},
1043 POPT_COMMON_DYNCONFIG
1046 struct smbd_parent_context *parent = NULL;
1049 struct tevent_context *ev_ctx;
1050 struct messaging_context *msg_ctx;
1051 struct server_id server_id;
1052 struct tevent_signal *se;
1053 char *np_dir = NULL;
1056 * Do this before any other talloc operation
1058 talloc_enable_null_tracking();
1059 frame = talloc_stackframe();
1061 setup_logging(argv[0], DEBUG_DEFAULT_STDOUT);
1065 smbd_init_globals();
1069 #ifdef HAVE_SET_AUTH_PARAMETERS
1070 set_auth_parameters(argc,argv);
1073 pc = poptGetContext("smbd", argc, argv, long_options, 0);
1074 while((opt = poptGetNextOpt(pc)) != -1) {
1079 case OPT_INTERACTIVE:
1085 case OPT_NO_PROCESS_GROUP:
1086 no_process_group = true;
1088 case OPT_LOG_STDOUT:
1092 print_build_options = True;
1095 d_fprintf(stderr, "\nInvalid option %s: %s\n\n",
1096 poptBadOption(pc, 0), poptStrerror(opt));
1097 poptPrintUsage(pc, stderr, 0);
1101 poptFreeContext(pc);
1109 setup_logging(argv[0], DEBUG_STDOUT);
1111 setup_logging(argv[0], DEBUG_FILE);
1114 if (print_build_options) {
1115 build_options(True); /* Display output to screen as well as debug */
1120 /* needed for SecureWare on SCO */
1124 set_remote_machine_name("smbd", False);
1126 if (interactive && (DEBUGLEVEL >= 9)) {
1127 talloc_enable_leak_report();
1130 if (log_stdout && Fork) {
1131 DEBUG(0,("ERROR: Can't log to stdout (-S) unless daemon is in foreground (-F) or interactive (-i)\n"));
1135 /* we want to re-seed early to prevent time delays causing
1136 client problems at a later date. (tridge) */
1137 generate_random_buffer(NULL, 0);
1139 /* get initial effective uid and gid */
1142 /* make absolutely sure we run as root - to handle cases where people
1143 are crazy enough to have it setuid */
1144 gain_root_privilege();
1145 gain_root_group_privilege();
1148 dump_core_setup("smbd", lp_logfile(talloc_tos()));
1150 /* we are never interested in SIGPIPE */
1151 BlockSignals(True,SIGPIPE);
1154 /* we are never interested in SIGFPE */
1155 BlockSignals(True,SIGFPE);
1158 #if defined(SIGUSR2)
1159 /* We are no longer interested in USR2 */
1160 BlockSignals(True,SIGUSR2);
1163 /* POSIX demands that signals are inherited. If the invoking process has
1164 * these signals masked, we will have problems, as we won't recieve them. */
1165 BlockSignals(False, SIGHUP);
1166 BlockSignals(False, SIGUSR1);
1167 BlockSignals(False, SIGTERM);
1169 /* Ensure we leave no zombies until we
1170 * correctly set up child handling below. */
1174 /* we want total control over the permissions on created files,
1175 so set our umask to 0 */
1180 DEBUG(0,("smbd version %s started.\n", samba_version_string()));
1181 DEBUGADD(0,("%s\n", COPYRIGHT_STARTUP_MESSAGE));
1183 DEBUG(2,("uid=%d gid=%d euid=%d egid=%d\n",
1184 (int)getuid(),(int)getgid(),(int)geteuid(),(int)getegid()));
1186 /* Output the build options to the debug log */
1187 build_options(False);
1189 if (sizeof(uint16) < 2 || sizeof(uint32) < 4) {
1190 DEBUG(0,("ERROR: Samba is not configured correctly for the word size on your machine\n"));
1194 if (!lp_load_initial_only(get_dyn_CONFIGFILE())) {
1195 DEBUG(0, ("error opening config file '%s'\n", get_dyn_CONFIGFILE()));
1199 /* Init the security context and global current_user */
1203 * Initialize the event context. The event context needs to be
1204 * initialized before the messaging context, cause the messaging
1205 * context holds an event context.
1206 * FIXME: This should be s3_tevent_context_init()
1208 ev_ctx = server_event_context();
1209 if (ev_ctx == NULL) {
1214 * Init the messaging context
1215 * FIXME: This should only call messaging_init()
1217 msg_ctx = server_messaging_context();
1218 if (msg_ctx == NULL) {
1223 * Reloading of the printers will not work here as we don't have a
1224 * server info and rpc services set up. It will be called later.
1226 if (!reload_services(NULL, NULL, false)) {
1230 /* ...NOTE... Log files are working from this point! */
1232 DEBUG(3,("loaded services\n"));
1237 if (!profile_setup(msg_ctx, False)) {
1238 DEBUG(0,("ERROR: failed to setup profiling\n"));
1241 if (profile_level != NULL) {
1242 int pl = atoi(profile_level);
1243 struct server_id src;
1245 DEBUG(1, ("setting profiling level: %s\n",profile_level));
1247 set_profile_level(pl, src);
1251 if (!is_daemon && !is_a_socket(0)) {
1253 DEBUG(0,("standard input is not a socket, assuming -D option\n"));
1256 * Setting is_daemon here prevents us from eventually calling
1257 * the open_sockets_inetd()
1263 if (is_daemon && !interactive) {
1264 DEBUG( 3, ( "Becoming a daemon.\n" ) );
1265 become_daemon(Fork, no_process_group, log_stdout);
1268 set_my_unique_id(serverid_get_random_unique_id());
1272 * If we're interactive we want to set our own process group for
1273 * signal management.
1275 if (interactive && !no_process_group)
1276 setpgid( (pid_t)0, (pid_t)0);
1279 if (!directory_exist(lp_lockdir()))
1280 mkdir(lp_lockdir(), 0755);
1282 if (!directory_exist(lp_piddir()))
1283 mkdir(lp_piddir(), 0755);
1286 pidfile_create(lp_piddir(), "smbd");
1288 status = reinit_after_fork(msg_ctx,
1291 if (!NT_STATUS_IS_OK(status)) {
1292 DEBUG(0,("reinit_after_fork() failed\n"));
1298 * Do not initialize the parent-child-pipe before becoming a
1299 * daemon: this is used to detect a died parent in the child
1302 status = init_before_fork();
1303 if (!NT_STATUS_IS_OK(status)) {
1304 DEBUG(0, ("init_before_fork failed: %s\n", nt_errstr(status)));
1309 parent = talloc_zero(ev_ctx, struct smbd_parent_context);
1311 exit_server("talloc(struct smbd_parent_context) failed");
1313 parent->interactive = interactive;
1314 parent->ev_ctx = ev_ctx;
1315 parent->msg_ctx = msg_ctx;
1318 se = tevent_add_signal(parent->ev_ctx,
1321 smbd_parent_sig_term_handler,
1324 exit_server("failed to setup SIGTERM handler");
1326 se = tevent_add_signal(parent->ev_ctx,
1329 smbd_parent_sig_hup_handler,
1332 exit_server("failed to setup SIGHUP handler");
1335 /* Setup all the TDB's - including CLEAR_IF_FIRST tdb's. */
1337 if (smbd_memcache() == NULL) {
1341 memcache_set_global(smbd_memcache());
1343 /* Initialise the password backed before the global_sam_sid
1344 to ensure that we fetch from ldap before we make a domain sid up */
1346 if(!initialize_password_db(false, ev_ctx))
1349 if (!secrets_init()) {
1350 DEBUG(0, ("ERROR: smbd can not open secrets.tdb\n"));
1354 if (lp_server_role() == ROLE_DOMAIN_BDC || lp_server_role() == ROLE_DOMAIN_PDC) {
1355 struct loadparm_context *lp_ctx = loadparm_init_s3(NULL, loadparm_s3_helpers());
1356 if (!open_schannel_session_store(NULL, lp_ctx)) {
1357 DEBUG(0,("ERROR: Samba cannot open schannel store for secured NETLOGON operations.\n"));
1360 TALLOC_FREE(lp_ctx);
1363 if(!get_global_sam_sid()) {
1364 DEBUG(0,("ERROR: Samba cannot create a SAM SID.\n"));
1368 server_id = messaging_server_id(msg_ctx);
1369 status = smbXsrv_version_global_init(&server_id);
1370 if (!NT_STATUS_IS_OK(status)) {
1374 if (!sessionid_init()) {
1377 status = smbXsrv_session_global_init();
1378 if (!NT_STATUS_IS_OK(status)) {
1382 if (!connections_init(true)) {
1385 status = smbXsrv_tcon_global_init();
1386 if (!NT_STATUS_IS_OK(status)) {
1390 if (!locking_init())
1393 if (!messaging_tdb_parent_init(ev_ctx)) {
1397 if (!smbd_parent_notify_init(NULL, msg_ctx, ev_ctx)) {
1401 if (!serverid_parent_init(ev_ctx)) {
1405 if (!W_ERROR_IS_OK(registry_init_full()))
1408 /* Open the share_info.tdb here, so we don't have to open
1409 after the fork on every single connection. This is a small
1410 performance improvment and reduces the total number of system
1412 if (!share_info_db_init()) {
1413 DEBUG(0,("ERROR: failed to load share info db.\n"));
1417 status = init_system_session_info();
1418 if (!NT_STATUS_IS_OK(status)) {
1419 DEBUG(1, ("ERROR: failed to setup system user info: %s.\n",
1420 nt_errstr(status)));
1424 if (!init_guest_info()) {
1425 DEBUG(0,("ERROR: failed to setup guest info.\n"));
1429 if (!file_init_global()) {
1430 DEBUG(0, ("ERROR: file_init_global() failed\n"));
1433 status = smbXsrv_open_global_init();
1434 if (!NT_STATUS_IS_OK(status)) {
1438 /* This MUST be done before start_epmd() because otherwise
1439 * start_epmd() forks and races against dcesrv_ep_setup() to
1440 * call directory_create_or_exist() */
1441 if (!directory_create_or_exist(lp_ncalrpc_dir(), geteuid(), 0755)) {
1442 DEBUG(0, ("Failed to create pipe directory %s - %s\n",
1443 lp_ncalrpc_dir(), strerror(errno)));
1447 np_dir = talloc_asprintf(talloc_tos(), "%s/np", lp_ncalrpc_dir());
1449 DEBUG(0, ("%s: Out of memory\n", __location__));
1453 if (!directory_create_or_exist(np_dir, geteuid(), 0700)) {
1454 DEBUG(0, ("Failed to create pipe directory %s - %s\n",
1455 np_dir, strerror(errno)));
1459 if (is_daemon && !interactive) {
1460 if (rpc_epmapper_daemon() == RPC_DAEMON_FORK) {
1461 start_epmd(ev_ctx, msg_ctx);
1465 /* only start other daemons if we are running as a daemon
1466 * -- bad things will happen if smbd is launched via inetd
1467 * and we fork a copy of ourselves here */
1468 if (is_daemon && !interactive) {
1470 if (rpc_lsasd_daemon() == RPC_DAEMON_FORK) {
1471 start_lsasd(ev_ctx, msg_ctx);
1474 if (!lp__disable_spoolss() &&
1475 (rpc_spoolss_daemon() != RPC_DAEMON_DISABLED)) {
1476 bool bgq = lp_parm_bool(-1, "smbd", "backgroundqueue", true);
1478 if (!printing_subsystem_init(ev_ctx, msg_ctx, true, bgq)) {
1482 } else if (!lp__disable_spoolss() &&
1483 (rpc_spoolss_daemon() != RPC_DAEMON_DISABLED)) {
1484 if (!printing_subsystem_init(ev_ctx, msg_ctx, false, false)) {
1489 if (!dcesrv_ep_setup(ev_ctx, msg_ctx)) {
1499 /* Started from inetd. fd 0 is the socket. */
1500 /* We will abort gracefully when the client or remote system
1504 /* close stdin, stdout (if not logging to it), but not stderr */
1505 close_low_fds(true, !debug_get_output_is_stdout(), false);
1512 smbd_setup_sig_chld_handler(parent);
1514 smbd_process(ev_ctx, msg_ctx, sock, true);
1516 exit_server_cleanly(NULL);
1520 if (!open_sockets_smbd(parent, ev_ctx, msg_ctx, ports))
1521 exit_server("open_sockets_smbd() failed");
1523 /* do a printer update now that all messaging has been set up,
1524 * before we allow clients to start connecting */
1525 printing_subsystem_update(ev_ctx, msg_ctx, false);
1528 /* make sure we always have a valid stackframe */
1529 frame = talloc_stackframe();
1532 /* if we are running in the foreground then look for
1533 EOF on stdin, and exit if it happens. This allows
1534 us to die if the parent process dies
1536 tevent_add_fd(ev_ctx, parent, 0, TEVENT_FD_READ, smbd_stdin_handler, NULL);
1539 smbd_parent_loop(ev_ctx, parent);
1541 exit_server_cleanly(NULL);