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 smbd_parent_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);
99 DEBUG(10,("smbd_parent_conf_updated: Got message saying smb.conf was "
100 "updated. Reloading.\n"));
101 change_to_root_user();
102 reload_services(NULL, NULL, false);
103 printing_subsystem_update(ev_ctx, msg, false);
106 /*******************************************************************
107 What to do when printcap is updated.
108 ********************************************************************/
110 static void smb_pcap_updated(struct messaging_context *msg,
113 struct server_id server_id,
116 struct tevent_context *ev_ctx =
117 talloc_get_type_abort(private_data, struct tevent_context);
119 DEBUG(10,("Got message saying pcap was updated. Reloading.\n"));
120 change_to_root_user();
121 delete_and_reload_printers(ev_ctx, msg);
124 /*******************************************************************
125 Delete a statcache entry.
126 ********************************************************************/
128 static void smb_stat_cache_delete(struct messaging_context *msg,
131 struct server_id server_id,
134 const char *name = (const char *)data->data;
135 DEBUG(10,("smb_stat_cache_delete: delete name %s\n", name));
136 stat_cache_delete(name);
139 /****************************************************************************
140 Send a SIGTERM to our process group.
141 *****************************************************************************/
143 static void killkids(void)
145 if(am_parent) kill(0,SIGTERM);
148 static void msg_exit_server(struct messaging_context *msg,
151 struct server_id server_id,
154 DEBUG(3, ("got a SHUTDOWN message\n"));
155 exit_server_cleanly(NULL);
159 static void msg_inject_fault(struct messaging_context *msg,
162 struct server_id src,
167 if (data->length != sizeof(sig)) {
168 DEBUG(0, ("Process %s sent bogus signal injection request\n",
169 procid_str_static(&src)));
173 sig = *(int *)data->data;
175 exit_server("internal error injected");
180 DEBUG(0, ("Process %s requested injection of signal %d (%s)\n",
181 procid_str_static(&src), sig, strsignal(sig)));
183 DEBUG(0, ("Process %s requested injection of signal %d\n",
184 procid_str_static(&src), sig));
187 kill(sys_getpid(), sig);
189 #endif /* DEVELOPER */
191 NTSTATUS messaging_send_to_children(struct messaging_context *msg_ctx,
192 uint32_t msg_type, DATA_BLOB* data)
195 struct smbd_parent_context *parent = am_parent;
196 struct smbd_child_pid *child;
198 if (parent == NULL) {
199 return NT_STATUS_INTERNAL_ERROR;
202 for (child = parent->children; child != NULL; child = child->next) {
203 status = messaging_send(parent->msg_ctx,
204 pid_to_procid(child->pid),
206 if (!NT_STATUS_IS_OK(status)) {
214 * Parent smbd process sets its own debug level first and then
215 * sends a message to all the smbd children to adjust their debug
216 * level to that of the parent.
219 static void smbd_msg_debug(struct messaging_context *msg_ctx,
222 struct server_id server_id,
225 debug_message(msg_ctx, private_data, MSG_DEBUG, server_id, data);
227 messaging_send_to_children(msg_ctx, MSG_DEBUG, data);
230 static void smbd_parent_id_cache_kill(struct messaging_context *msg_ctx,
233 struct server_id server_id,
236 const char *msg = (data && data->data)
237 ? (const char *)data->data : "<NULL>";
238 struct id_cache_ref id;
240 if (!id_cache_ref_parse(msg, &id)) {
241 DEBUG(0, ("Invalid ?ID: %s\n", msg));
245 id_cache_delete_from_cache(&id);
247 messaging_send_to_children(msg_ctx, msg_type, data);
250 static void smbd_parent_id_cache_flush(struct messaging_context *ctx,
253 struct server_id srv_id,
256 id_cache_flush_message(ctx, data, msg_type, srv_id, msg_data);
258 messaging_send_to_children(ctx, msg_type, msg_data);
261 static void smbd_parent_id_cache_delete(struct messaging_context *ctx,
264 struct server_id srv_id,
267 id_cache_delete_message(ctx, data, msg_type, srv_id, msg_data);
269 messaging_send_to_children(ctx, msg_type, msg_data);
272 static void smb_parent_force_tdis(struct messaging_context *ctx,
275 struct server_id srv_id,
278 messaging_send_to_children(ctx, msg_type, msg_data);
281 static void add_child_pid(struct smbd_parent_context *parent,
284 struct smbd_child_pid *child;
286 child = talloc_zero(parent, struct smbd_child_pid);
288 DEBUG(0, ("Could not add child struct -- malloc failed\n"));
292 DLIST_ADD(parent->children, child);
293 parent->num_children += 1;
297 at most every smbd:cleanuptime seconds (default 20), we scan the BRL
298 and locking database for entries to cleanup. As a side effect this
299 also cleans up dead entries in the connections database (due to the
300 traversal in message_send_all()
302 Using a timer for this prevents a flood of traversals when a large
303 number of clients disconnect at the same time (perhaps due to a
307 static void cleanup_timeout_fn(struct event_context *event_ctx,
308 struct timed_event *te,
312 struct smbd_parent_context *parent =
313 talloc_get_type_abort(private_data,
314 struct smbd_parent_context);
316 parent->cleanup_te = NULL;
318 DEBUG(1,("Cleaning up brl and lock database after unclean shutdown\n"));
319 message_send_all(parent->msg_ctx, MSG_SMB_UNLOCK, NULL, 0, NULL);
320 messaging_send_buf(parent->msg_ctx,
321 messaging_server_id(parent->msg_ctx),
322 MSG_SMB_BRL_VALIDATE, NULL, 0);
325 static void remove_child_pid(struct smbd_parent_context *parent,
327 bool unclean_shutdown)
329 struct smbd_child_pid *child;
330 struct server_id child_id;
332 if (unclean_shutdown) {
333 /* a child terminated uncleanly so tickle all
334 processes to see if they can grab any of the
337 DEBUG(3,(__location__ " Unclean shutdown of pid %u\n",
339 if (parent->cleanup_te == NULL) {
340 /* call the cleanup timer, but not too often */
341 int cleanup_time = lp_parm_int(-1, "smbd", "cleanuptime", 20);
342 parent->cleanup_te = tevent_add_timer(parent->ev_ctx,
344 timeval_current_ofs(cleanup_time, 0),
347 DEBUG(1,("Scheduled cleanup of brl and lock database after unclean shutdown\n"));
351 child_id = pid_to_procid(pid);
353 if (!serverid_deregister(child_id)) {
354 DEBUG(1, ("Could not remove pid %d from serverid.tdb\n",
358 for (child = parent->children; child != NULL; child = child->next) {
359 if (child->pid == pid) {
360 struct smbd_child_pid *tmp = child;
361 DLIST_REMOVE(parent->children, child);
363 parent->num_children -= 1;
368 /* not all forked child processes are added to the children list */
369 DEBUG(1, ("Could not find child %d -- ignoring\n", (int)pid));
372 /****************************************************************************
373 Have we reached the process limit ?
374 ****************************************************************************/
376 static bool allowable_number_of_smbd_processes(struct smbd_parent_context *parent)
378 int max_processes = lp_max_smbd_processes();
383 return parent->num_children < max_processes;
386 static void smbd_sig_chld_handler(struct tevent_context *ev,
387 struct tevent_signal *se,
395 struct smbd_parent_context *parent =
396 talloc_get_type_abort(private_data,
397 struct smbd_parent_context);
399 while ((pid = sys_waitpid(-1, &status, WNOHANG)) > 0) {
400 bool unclean_shutdown = False;
402 /* If the child terminated normally, assume
403 it was an unclean shutdown unless the
406 if (WIFEXITED(status)) {
407 unclean_shutdown = WEXITSTATUS(status);
409 /* If the child terminated due to a signal
410 we always assume it was unclean.
412 if (WIFSIGNALED(status)) {
413 unclean_shutdown = True;
415 remove_child_pid(parent, pid, unclean_shutdown);
419 static void smbd_setup_sig_chld_handler(struct smbd_parent_context *parent)
421 struct tevent_signal *se;
423 se = tevent_add_signal(parent->ev_ctx,
424 parent, /* mem_ctx */
426 smbd_sig_chld_handler,
429 exit_server("failed to setup SIGCHLD handler");
433 static void smbd_open_socket_close_fn(struct tevent_context *ev,
434 struct tevent_fd *fde,
438 /* this might be the socket_wrapper swrap_close() */
442 static void smbd_accept_connection(struct tevent_context *ev,
443 struct tevent_fd *fde,
447 struct smbd_open_socket *s = talloc_get_type_abort(private_data,
448 struct smbd_open_socket);
449 struct messaging_context *msg_ctx = s->parent->msg_ctx;
450 struct smbd_server_connection *sconn = smbd_server_conn;
451 struct sockaddr_storage addr;
452 socklen_t in_addrlen = sizeof(addr);
457 fd = accept(s->fd, (struct sockaddr *)(void *)&addr,&in_addrlen);
459 if (fd == -1 && errno == EINTR)
463 DEBUG(0,("open_sockets_smbd: accept: %s\n",
468 if (s->parent->interactive) {
469 reinit_after_fork(msg_ctx, sconn->ev_ctx, true);
470 smbd_process(ev, sconn);
471 exit_server_cleanly("end of interactive mode");
475 if (!allowable_number_of_smbd_processes(s->parent)) {
482 * Generate a unique id in the parent process so that we use
483 * the global random state in the parent.
485 unique_id = serverid_get_random_unique_id();
489 NTSTATUS status = NT_STATUS_OK;
495 * Can't use TALLOC_FREE here. Nulling out the argument to it
496 * would overwrite memory we've just freed.
498 talloc_free(s->parent);
501 set_my_unique_id(unique_id);
503 /* Stop zombies, the parent explicitly handles
504 * them, counting worker smbds. */
507 /* close our standard file
509 if (!debug_get_output_is_stdout()) {
510 close_low_fds(False); /* Don't close stderr */
513 status = reinit_after_fork(msg_ctx,
516 if (!NT_STATUS_IS_OK(status)) {
517 if (NT_STATUS_EQUAL(status,
518 NT_STATUS_TOO_MANY_OPENED_FILES)) {
519 DEBUG(0,("child process cannot initialize "
520 "because too many files are open\n"));
523 if (lp_clustering() &&
524 NT_STATUS_EQUAL(status,
525 NT_STATUS_INTERNAL_DB_ERROR)) {
526 DEBUG(1,("child process cannot initialize "
527 "because connection to CTDB "
532 DEBUG(0,("reinit_after_fork() failed\n"));
533 smb_panic("reinit_after_fork() failed");
536 smbd_setup_sig_term_handler(sconn);
537 smbd_setup_sig_hup_handler(sconn);
539 if (!serverid_register(messaging_server_id(msg_ctx),
540 FLAG_MSG_GENERAL|FLAG_MSG_SMBD
542 |FLAG_MSG_PRINT_GENERAL)) {
543 exit_server_cleanly("Could not register myself in "
547 smbd_process(ev, sconn);
549 exit_server_cleanly("end of child");
554 DEBUG(0,("smbd_accept_connection: sys_fork() failed: %s\n",
558 /* The parent doesn't need this socket */
561 /* Sun May 6 18:56:14 2001 ackley@cs.unm.edu:
562 Clear the closed fd info out of server_fd --
563 and more importantly, out of client_fd in
564 util_sock.c, to avoid a possible
565 getpeername failure if we reopen the logs
566 and use %I in the filename.
571 add_child_pid(s->parent, pid);
574 /* Force parent to check log size after
575 * spawning child. Fix from
576 * klausr@ITAP.Physik.Uni-Stuttgart.De. The
577 * parent smbd will log to logserver.smb. It
578 * writes only two messages for each child
579 * started/finished. But each child writes,
580 * say, 50 messages also in logserver.smb,
581 * begining with the debug_count of the
582 * parent, before the child opens its own log
583 * file logserver.client. In a worst case
584 * scenario the size of logserver.smb would be
585 * checked after about 50*50=2500 messages
588 force_check_log_size();
591 static bool smbd_open_one_socket(struct smbd_parent_context *parent,
592 struct tevent_context *ev_ctx,
593 struct messaging_context *msg_ctx,
594 const struct sockaddr_storage *ifss,
597 struct smbd_open_socket *s;
599 s = talloc(parent, struct smbd_open_socket);
605 s->fd = open_socket_in(SOCK_STREAM,
607 parent->sockets == NULL ? 0 : 2,
611 DEBUG(0,("smbd_open_once_socket: open_socket_in: "
612 "%s\n", strerror(errno)));
615 * We ignore an error here, as we've done before
620 /* ready to listen */
621 set_socket_options(s->fd, "SO_KEEPALIVE");
622 set_socket_options(s->fd, lp_socket_options());
624 /* Set server socket to
625 * non-blocking for the accept. */
626 set_blocking(s->fd, False);
628 if (listen(s->fd, SMBD_LISTEN_BACKLOG) == -1) {
629 DEBUG(0,("open_sockets_smbd: listen: "
630 "%s\n", strerror(errno)));
636 s->fde = tevent_add_fd(ev_ctx,
638 s->fd, TEVENT_FD_READ,
639 smbd_accept_connection,
642 DEBUG(0,("open_sockets_smbd: "
643 "tevent_add_fd: %s\n",
649 tevent_fd_set_close_fn(s->fde, smbd_open_socket_close_fn);
651 DLIST_ADD_END(parent->sockets, s, struct smbd_open_socket *);
656 /****************************************************************************
657 Open the socket communication.
658 ****************************************************************************/
660 static bool open_sockets_smbd(struct smbd_parent_context *parent,
661 struct tevent_context *ev_ctx,
662 struct messaging_context *msg_ctx,
663 const char *smb_ports)
665 int num_interfaces = iface_count();
668 unsigned dns_port = 0;
675 smbd_setup_sig_chld_handler(parent);
677 /* use a reasonable default set of ports - listing on 445 and 139 */
679 ports = lp_smb_ports();
680 if (!ports || !*ports) {
681 ports = talloc_strdup(talloc_tos(), SMB_PORTS);
683 ports = talloc_strdup(talloc_tos(), ports);
686 ports = talloc_strdup(talloc_tos(), smb_ports);
689 if (lp_interfaces() && lp_bind_interfaces_only()) {
690 /* We have been given an interfaces line, and been
691 told to only bind to those interfaces. Create a
692 socket per interface and bind to only these.
695 /* Now open a listen socket for each of the
697 for(i = 0; i < num_interfaces; i++) {
698 const struct sockaddr_storage *ifss =
699 iface_n_sockaddr_storage(i);
704 DEBUG(0,("open_sockets_smbd: "
705 "interface %d has NULL IP address !\n",
711 next_token_talloc(talloc_tos(),&ptr, &tok, " \t,");) {
712 unsigned port = atoi(tok);
713 if (port == 0 || port > 0xffff) {
717 /* Keep the first port for mDNS service
724 if (!smbd_open_one_socket(parent,
734 /* Just bind to 0.0.0.0 - accept connections
739 const char *sock_addr = lp_socket_address();
741 const char *sock_ptr;
743 if (strequal(sock_addr, "0.0.0.0") ||
744 strequal(sock_addr, "::")) {
746 sock_addr = "::,0.0.0.0";
748 sock_addr = "0.0.0.0";
752 for (sock_ptr=sock_addr;
753 next_token_talloc(talloc_tos(), &sock_ptr, &sock_tok, " \t,"); ) {
754 for (ptr=ports; next_token_talloc(talloc_tos(), &ptr, &tok, " \t,"); ) {
755 struct sockaddr_storage ss;
757 unsigned port = atoi(tok);
758 if (port == 0 || port > 0xffff) {
762 /* Keep the first port for mDNS service
769 /* open an incoming socket */
770 if (!interpret_string_addr(&ss, sock_tok,
771 AI_NUMERICHOST|AI_PASSIVE)) {
775 if (!smbd_open_one_socket(parent,
786 if (parent->sockets == NULL) {
787 DEBUG(0,("open_sockets_smbd: No "
788 "sockets available to bind to.\n"));
792 /* Setup the main smbd so that we can get messages. Note that
793 do this after starting listening. This is needed as when in
794 clustered mode, ctdb won't allow us to start doing database
795 operations until it has gone thru a full startup, which
796 includes checking to see that smbd is listening. */
798 if (!serverid_register(messaging_server_id(msg_ctx),
799 FLAG_MSG_GENERAL|FLAG_MSG_SMBD
800 |FLAG_MSG_PRINT_GENERAL
802 DEBUG(0, ("open_sockets_smbd: Failed to register "
803 "myself in serverid.tdb\n"));
807 /* Listen to messages */
809 messaging_register(msg_ctx, NULL, MSG_SHUTDOWN, msg_exit_server);
810 messaging_register(msg_ctx, ev_ctx, MSG_SMB_CONF_UPDATED,
811 smbd_parent_conf_updated);
812 messaging_register(msg_ctx, NULL, MSG_SMB_STAT_CACHE_DELETE,
813 smb_stat_cache_delete);
814 messaging_register(msg_ctx, NULL, MSG_DEBUG, smbd_msg_debug);
815 messaging_register(msg_ctx, ev_ctx, MSG_PRINTER_PCAP,
817 messaging_register(msg_ctx, NULL, MSG_SMB_BRL_VALIDATE,
819 messaging_register(msg_ctx, NULL, MSG_SMB_FORCE_TDIS,
820 smb_parent_force_tdis);
822 messaging_register(msg_ctx, NULL,
823 ID_CACHE_FLUSH, smbd_parent_id_cache_flush);
824 messaging_register(msg_ctx, NULL,
825 ID_CACHE_DELETE, smbd_parent_id_cache_delete);
826 messaging_register(msg_ctx, NULL,
827 ID_CACHE_KILL, smbd_parent_id_cache_kill);
829 #ifdef CLUSTER_SUPPORT
830 if (lp_clustering()) {
831 ctdbd_register_reconfigure(messaging_ctdbd_connection());
836 messaging_register(msg_ctx, NULL, MSG_SMB_INJECT_FAULT,
840 if (lp_multicast_dns_register() && (dns_port != 0)) {
841 #ifdef WITH_DNSSD_SUPPORT
842 smbd_setup_mdns_registration(ev_ctx,
845 #ifdef WITH_AVAHI_SUPPORT
848 avahi_conn = avahi_start_register(ev_ctx,
851 if (avahi_conn == NULL) {
852 DEBUG(10, ("avahi_start_register failed\n"));
862 handle stdin becoming readable when we are in --foreground mode
864 static void smbd_stdin_handler(struct tevent_context *ev,
865 struct tevent_fd *fde,
870 if (read(0, &c, 1) != 1) {
871 /* we have reached EOF on stdin, which means the
872 parent has exited. Shutdown the server */
873 exit_server_cleanly("EOF on stdin");
877 static void smbd_parent_loop(struct tevent_context *ev_ctx,
878 struct smbd_parent_context *parent)
880 /* now accept incoming connections - forking a new process
881 for each incoming connection */
882 DEBUG(2,("waiting for connections\n"));
885 TALLOC_CTX *frame = talloc_stackframe();
887 ret = tevent_loop_once(ev_ctx);
889 exit_server_cleanly("tevent_loop_once() error");
895 /* NOTREACHED return True; */
899 /****************************************************************************
900 Initialise connect, service and file structs.
901 ****************************************************************************/
903 static bool init_structs(void )
906 * Set the machine NETBIOS name if not already
907 * set from the config file.
919 static void smbd_parent_sig_term_handler(struct tevent_context *ev,
920 struct tevent_signal *se,
926 exit_server_cleanly("termination signal");
929 static void smbd_parent_sig_hup_handler(struct tevent_context *ev,
930 struct tevent_signal *se,
936 struct smbd_parent_context *parent =
937 talloc_get_type_abort(private_data,
938 struct smbd_parent_context);
940 change_to_root_user();
941 DEBUG(1,("parent: Reloading services after SIGHUP\n"));
942 reload_services(NULL, NULL, false);
944 printing_subsystem_update(parent->ev_ctx, parent->msg_ctx, true);
947 /****************************************************************************
949 ****************************************************************************/
951 /* Declare prototype for build_options() to avoid having to run it through
952 mkproto.h. Mixing $(builddir) and $(srcdir) source files in the current
953 prototype generation system is too complicated. */
955 extern void build_options(bool screen);
957 int main(int argc,const char *argv[])
959 /* shall I run as a daemon */
960 bool is_daemon = false;
961 bool interactive = false;
963 bool no_process_group = false;
964 bool log_stdout = false;
966 char *profile_level = NULL;
969 bool print_build_options = False;
974 OPT_NO_PROCESS_GROUP,
977 struct poptOption long_options[] = {
979 {"daemon", 'D', POPT_ARG_NONE, NULL, OPT_DAEMON, "Become a daemon (default)" },
980 {"interactive", 'i', POPT_ARG_NONE, NULL, OPT_INTERACTIVE, "Run interactive (not a daemon)"},
981 {"foreground", 'F', POPT_ARG_NONE, NULL, OPT_FORK, "Run daemon in foreground (for daemontools, etc.)" },
982 {"no-process-group", '\0', POPT_ARG_NONE, NULL, OPT_NO_PROCESS_GROUP, "Don't create a new process group" },
983 {"log-stdout", 'S', POPT_ARG_NONE, NULL, OPT_LOG_STDOUT, "Log to stdout" },
984 {"build-options", 'b', POPT_ARG_NONE, NULL, 'b', "Print build options" },
985 {"port", 'p', POPT_ARG_STRING, &ports, 0, "Listen on the specified ports"},
986 {"profiling-level", 'P', POPT_ARG_STRING, &profile_level, 0, "Set profiling level","PROFILE_LEVEL"},
988 POPT_COMMON_DYNCONFIG
991 struct smbd_parent_context *parent = NULL;
994 struct tevent_context *ev_ctx;
995 struct messaging_context *msg_ctx;
996 struct tevent_signal *se;
999 * Do this before any other talloc operation
1001 talloc_enable_null_tracking();
1002 frame = talloc_stackframe();
1004 setup_logging(argv[0], DEBUG_DEFAULT_STDOUT);
1008 smbd_init_globals();
1012 #ifdef HAVE_SET_AUTH_PARAMETERS
1013 set_auth_parameters(argc,argv);
1016 pc = poptGetContext("smbd", argc, argv, long_options, 0);
1017 while((opt = poptGetNextOpt(pc)) != -1) {
1022 case OPT_INTERACTIVE:
1028 case OPT_NO_PROCESS_GROUP:
1029 no_process_group = true;
1031 case OPT_LOG_STDOUT:
1035 print_build_options = True;
1038 d_fprintf(stderr, "\nInvalid option %s: %s\n\n",
1039 poptBadOption(pc, 0), poptStrerror(opt));
1040 poptPrintUsage(pc, stderr, 0);
1044 poptFreeContext(pc);
1052 setup_logging(argv[0], DEBUG_STDOUT);
1054 setup_logging(argv[0], DEBUG_FILE);
1057 if (print_build_options) {
1058 build_options(True); /* Display output to screen as well as debug */
1063 /* needed for SecureWare on SCO */
1067 set_remote_machine_name("smbd", False);
1069 if (interactive && (DEBUGLEVEL >= 9)) {
1070 talloc_enable_leak_report();
1073 if (log_stdout && Fork) {
1074 DEBUG(0,("ERROR: Can't log to stdout (-S) unless daemon is in foreground (-F) or interactive (-i)\n"));
1078 /* we want to re-seed early to prevent time delays causing
1079 client problems at a later date. (tridge) */
1080 generate_random_buffer(NULL, 0);
1082 /* get initial effective uid and gid */
1085 /* make absolutely sure we run as root - to handle cases where people
1086 are crazy enough to have it setuid */
1087 gain_root_privilege();
1088 gain_root_group_privilege();
1091 dump_core_setup("smbd", lp_logfile());
1093 /* we are never interested in SIGPIPE */
1094 BlockSignals(True,SIGPIPE);
1097 /* we are never interested in SIGFPE */
1098 BlockSignals(True,SIGFPE);
1101 #if defined(SIGUSR2)
1102 /* We are no longer interested in USR2 */
1103 BlockSignals(True,SIGUSR2);
1106 /* POSIX demands that signals are inherited. If the invoking process has
1107 * these signals masked, we will have problems, as we won't recieve them. */
1108 BlockSignals(False, SIGHUP);
1109 BlockSignals(False, SIGUSR1);
1110 BlockSignals(False, SIGTERM);
1112 /* Ensure we leave no zombies until we
1113 * correctly set up child handling below. */
1117 /* we want total control over the permissions on created files,
1118 so set our umask to 0 */
1123 DEBUG(0,("smbd version %s started.\n", samba_version_string()));
1124 DEBUGADD(0,("%s\n", COPYRIGHT_STARTUP_MESSAGE));
1126 DEBUG(2,("uid=%d gid=%d euid=%d egid=%d\n",
1127 (int)getuid(),(int)getgid(),(int)geteuid(),(int)getegid()));
1129 /* Output the build options to the debug log */
1130 build_options(False);
1132 if (sizeof(uint16) < 2 || sizeof(uint32) < 4) {
1133 DEBUG(0,("ERROR: Samba is not configured correctly for the word size on your machine\n"));
1137 if (!lp_load_initial_only(get_dyn_CONFIGFILE())) {
1138 DEBUG(0, ("error opening config file '%s'\n", get_dyn_CONFIGFILE()));
1142 /* Init the security context and global current_user */
1146 * Initialize the event context. The event context needs to be
1147 * initialized before the messaging context, cause the messaging
1148 * context holds an event context.
1149 * FIXME: This should be s3_tevent_context_init()
1151 ev_ctx = server_event_context();
1152 if (ev_ctx == NULL) {
1157 * Init the messaging context
1158 * FIXME: This should only call messaging_init()
1160 msg_ctx = server_messaging_context();
1161 if (msg_ctx == NULL) {
1166 * Reloading of the printers will not work here as we don't have a
1167 * server info and rpc services set up. It will be called later.
1169 if (!reload_services(NULL, NULL, false)) {
1173 /* ...NOTE... Log files are working from this point! */
1175 DEBUG(3,("loaded services\n"));
1180 if (!profile_setup(msg_ctx, False)) {
1181 DEBUG(0,("ERROR: failed to setup profiling\n"));
1184 if (profile_level != NULL) {
1185 int pl = atoi(profile_level);
1186 struct server_id src;
1188 DEBUG(1, ("setting profiling level: %s\n",profile_level));
1190 set_profile_level(pl, src);
1194 if (!is_daemon && !is_a_socket(0)) {
1196 DEBUG(0,("standard input is not a socket, assuming -D option\n"));
1199 * Setting is_daemon here prevents us from eventually calling
1200 * the open_sockets_inetd()
1206 if (is_daemon && !interactive) {
1207 DEBUG( 3, ( "Becoming a daemon.\n" ) );
1208 become_daemon(Fork, no_process_group, log_stdout);
1211 set_my_unique_id(serverid_get_random_unique_id());
1215 * If we're interactive we want to set our own process group for
1216 * signal management.
1218 if (interactive && !no_process_group)
1219 setpgid( (pid_t)0, (pid_t)0);
1222 if (!directory_exist(lp_lockdir()))
1223 mkdir(lp_lockdir(), 0755);
1226 pidfile_create("smbd");
1228 status = reinit_after_fork(msg_ctx,
1231 if (!NT_STATUS_IS_OK(status)) {
1232 DEBUG(0,("reinit_after_fork() failed\n"));
1236 smbd_server_conn->msg_ctx = msg_ctx;
1238 parent = talloc_zero(ev_ctx, struct smbd_parent_context);
1240 exit_server("talloc(struct smbd_parent_context) failed");
1242 parent->interactive = interactive;
1243 parent->ev_ctx = ev_ctx;
1244 parent->msg_ctx = msg_ctx;
1247 se = tevent_add_signal(parent->ev_ctx,
1250 smbd_parent_sig_term_handler,
1253 exit_server("failed to setup SIGTERM handler");
1255 se = tevent_add_signal(parent->ev_ctx,
1258 smbd_parent_sig_hup_handler,
1261 exit_server("failed to setup SIGHUP handler");
1264 /* Setup all the TDB's - including CLEAR_IF_FIRST tdb's. */
1266 if (smbd_memcache() == NULL) {
1270 memcache_set_global(smbd_memcache());
1272 /* Initialise the password backed before the global_sam_sid
1273 to ensure that we fetch from ldap before we make a domain sid up */
1275 if(!initialize_password_db(false, ev_ctx))
1278 if (!secrets_init()) {
1279 DEBUG(0, ("ERROR: smbd can not open secrets.tdb\n"));
1283 if (lp_server_role() == ROLE_DOMAIN_BDC || lp_server_role() == ROLE_DOMAIN_PDC) {
1284 struct loadparm_context *lp_ctx = loadparm_init_s3(NULL, loadparm_s3_context());
1285 if (!open_schannel_session_store(NULL, lp_ctx)) {
1286 DEBUG(0,("ERROR: Samba cannot open schannel store for secured NETLOGON operations.\n"));
1289 TALLOC_FREE(lp_ctx);
1292 if(!get_global_sam_sid()) {
1293 DEBUG(0,("ERROR: Samba cannot create a SAM SID.\n"));
1297 if (!sessionid_init()) {
1301 if (!connections_init(True))
1304 if (!locking_init())
1307 if (!messaging_tdb_parent_init(ev_ctx)) {
1311 if (!notify_internal_parent_init(ev_ctx)) {
1315 if (!serverid_parent_init(ev_ctx)) {
1319 if (!W_ERROR_IS_OK(registry_init_full()))
1322 /* Open the share_info.tdb here, so we don't have to open
1323 after the fork on every single connection. This is a small
1324 performance improvment and reduces the total number of system
1326 if (!share_info_db_init()) {
1327 DEBUG(0,("ERROR: failed to load share info db.\n"));
1331 status = init_system_info();
1332 if (!NT_STATUS_IS_OK(status)) {
1333 DEBUG(1, ("ERROR: failed to setup system user info: %s.\n",
1334 nt_errstr(status)));
1338 if (!init_guest_info()) {
1339 DEBUG(0,("ERROR: failed to setup guest info.\n"));
1343 if (!file_init(smbd_server_conn)) {
1344 DEBUG(0, ("ERROR: file_init failed\n"));
1348 /* This MUST be done before start_epmd() because otherwise
1349 * start_epmd() forks and races against dcesrv_ep_setup() to
1350 * call directory_create_or_exist() */
1351 if (!directory_create_or_exist(lp_ncalrpc_dir(), geteuid(), 0755)) {
1352 DEBUG(0, ("Failed to create pipe directory %s - %s\n",
1353 lp_ncalrpc_dir(), strerror(errno)));
1357 if (is_daemon && !interactive) {
1358 if (rpc_epmapper_daemon() == RPC_DAEMON_FORK) {
1359 start_epmd(ev_ctx, msg_ctx);
1363 if (!dcesrv_ep_setup(ev_ctx, msg_ctx)) {
1367 /* only start other daemons if we are running as a daemon
1368 * -- bad things will happen if smbd is launched via inetd
1369 * and we fork a copy of ourselves here */
1370 if (is_daemon && !interactive) {
1372 if (rpc_lsasd_daemon() == RPC_DAEMON_FORK) {
1373 start_lsasd(ev_ctx, msg_ctx);
1376 if (!_lp_disable_spoolss() &&
1377 (rpc_spoolss_daemon() != RPC_DAEMON_DISABLED)) {
1378 bool bgq = lp_parm_bool(-1, "smbd", "backgroundqueue", true);
1380 if (!printing_subsystem_init(ev_ctx, msg_ctx, true, bgq)) {
1384 } else if (!_lp_disable_spoolss() &&
1385 (rpc_spoolss_daemon() != RPC_DAEMON_DISABLED)) {
1386 if (!printing_subsystem_init(ev_ctx, msg_ctx, false, false)) {
1395 /* Started from inetd. fd 0 is the socket. */
1396 /* We will abort gracefully when the client or remote system
1398 smbd_server_conn->sock = dup(0);
1400 /* close our standard file descriptors */
1401 if (!debug_get_output_is_stdout()) {
1402 close_low_fds(False); /* Don't close stderr */
1410 smbd_setup_sig_chld_handler(parent);
1412 smbd_process(ev_ctx, smbd_server_conn);
1414 exit_server_cleanly(NULL);
1418 if (!open_sockets_smbd(parent, ev_ctx, msg_ctx, ports))
1419 exit_server("open_sockets_smbd() failed");
1421 /* do a printer update now that all messaging has been set up,
1422 * before we allow clients to start connecting */
1423 printing_subsystem_update(ev_ctx, msg_ctx, false);
1426 /* make sure we always have a valid stackframe */
1427 frame = talloc_stackframe();
1430 /* if we are running in the foreground then look for
1431 EOF on stdin, and exit if it happens. This allows
1432 us to die if the parent process dies
1434 tevent_add_fd(ev_ctx, parent, 0, TEVENT_FD_READ, smbd_stdin_handler, NULL);
1437 smbd_parent_loop(ev_ctx, parent);
1439 exit_server_cleanly(NULL);