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 add_child_pid(struct smbd_parent_context *parent,
275 struct smbd_child_pid *child;
277 child = talloc_zero(parent, struct smbd_child_pid);
279 DEBUG(0, ("Could not add child struct -- malloc failed\n"));
283 DLIST_ADD(parent->children, child);
284 parent->num_children += 1;
288 at most every smbd:cleanuptime seconds (default 20), we scan the BRL
289 and locking database for entries to cleanup. As a side effect this
290 also cleans up dead entries in the connections database (due to the
291 traversal in message_send_all()
293 Using a timer for this prevents a flood of traversals when a large
294 number of clients disconnect at the same time (perhaps due to a
298 static void cleanup_timeout_fn(struct event_context *event_ctx,
299 struct timed_event *te,
303 struct smbd_parent_context *parent =
304 talloc_get_type_abort(private_data,
305 struct smbd_parent_context);
307 parent->cleanup_te = NULL;
309 DEBUG(1,("Cleaning up brl and lock database after unclean shutdown\n"));
310 message_send_all(parent->msg_ctx, MSG_SMB_UNLOCK, NULL, 0, NULL);
311 messaging_send_buf(parent->msg_ctx,
312 messaging_server_id(parent->msg_ctx),
313 MSG_SMB_BRL_VALIDATE, NULL, 0);
316 static void remove_child_pid(struct smbd_parent_context *parent,
318 bool unclean_shutdown)
320 struct smbd_child_pid *child;
321 struct server_id child_id;
323 if (unclean_shutdown) {
324 /* a child terminated uncleanly so tickle all
325 processes to see if they can grab any of the
328 DEBUG(3,(__location__ " Unclean shutdown of pid %u\n",
330 if (parent->cleanup_te == NULL) {
331 /* call the cleanup timer, but not too often */
332 int cleanup_time = lp_parm_int(-1, "smbd", "cleanuptime", 20);
333 parent->cleanup_te = tevent_add_timer(parent->ev_ctx,
335 timeval_current_ofs(cleanup_time, 0),
338 DEBUG(1,("Scheduled cleanup of brl and lock database after unclean shutdown\n"));
342 child_id = pid_to_procid(pid);
344 if (!serverid_deregister(child_id)) {
345 DEBUG(1, ("Could not remove pid %d from serverid.tdb\n",
349 for (child = parent->children; child != NULL; child = child->next) {
350 if (child->pid == pid) {
351 struct smbd_child_pid *tmp = child;
352 DLIST_REMOVE(parent->children, child);
354 parent->num_children -= 1;
359 /* not all forked child processes are added to the children list */
360 DEBUG(1, ("Could not find child %d -- ignoring\n", (int)pid));
363 /****************************************************************************
364 Have we reached the process limit ?
365 ****************************************************************************/
367 static bool allowable_number_of_smbd_processes(struct smbd_parent_context *parent)
369 int max_processes = lp_max_smbd_processes();
374 return parent->num_children < max_processes;
377 static void smbd_sig_chld_handler(struct tevent_context *ev,
378 struct tevent_signal *se,
386 struct smbd_parent_context *parent =
387 talloc_get_type_abort(private_data,
388 struct smbd_parent_context);
390 while ((pid = sys_waitpid(-1, &status, WNOHANG)) > 0) {
391 bool unclean_shutdown = False;
393 /* If the child terminated normally, assume
394 it was an unclean shutdown unless the
397 if (WIFEXITED(status)) {
398 unclean_shutdown = WEXITSTATUS(status);
400 /* If the child terminated due to a signal
401 we always assume it was unclean.
403 if (WIFSIGNALED(status)) {
404 unclean_shutdown = True;
406 remove_child_pid(parent, pid, unclean_shutdown);
410 static void smbd_setup_sig_chld_handler(struct smbd_parent_context *parent)
412 struct tevent_signal *se;
414 se = tevent_add_signal(parent->ev_ctx,
415 parent, /* mem_ctx */
417 smbd_sig_chld_handler,
420 exit_server("failed to setup SIGCHLD handler");
424 static void smbd_open_socket_close_fn(struct tevent_context *ev,
425 struct tevent_fd *fde,
429 /* this might be the socket_wrapper swrap_close() */
433 static void smbd_accept_connection(struct tevent_context *ev,
434 struct tevent_fd *fde,
438 struct smbd_open_socket *s = talloc_get_type_abort(private_data,
439 struct smbd_open_socket);
440 struct messaging_context *msg_ctx = s->parent->msg_ctx;
441 struct smbd_server_connection *sconn = smbd_server_conn;
442 struct sockaddr_storage addr;
443 socklen_t in_addrlen = sizeof(addr);
448 fd = accept(s->fd, (struct sockaddr *)(void *)&addr,&in_addrlen);
450 if (fd == -1 && errno == EINTR)
454 DEBUG(0,("open_sockets_smbd: accept: %s\n",
459 if (s->parent->interactive) {
460 smbd_process(ev, sconn);
461 exit_server_cleanly("end of interactive mode");
465 if (!allowable_number_of_smbd_processes(s->parent)) {
472 * Generate a unique id in the parent process so that we use
473 * the global random state in the parent.
475 generate_random_buffer((uint8_t *)&unique_id, sizeof(unique_id));
479 NTSTATUS status = NT_STATUS_OK;
485 * Can't use TALLOC_FREE here. Nulling out the argument to it
486 * would overwrite memory we've just freed.
488 talloc_free(s->parent);
491 set_my_unique_id(unique_id);
493 /* Stop zombies, the parent explicitly handles
494 * them, counting worker smbds. */
497 /* close our standard file
499 if (!debug_get_output_is_stdout()) {
500 close_low_fds(False); /* Don't close stderr */
503 status = reinit_after_fork(msg_ctx,
506 if (!NT_STATUS_IS_OK(status)) {
507 if (NT_STATUS_EQUAL(status,
508 NT_STATUS_TOO_MANY_OPENED_FILES)) {
509 DEBUG(0,("child process cannot initialize "
510 "because too many files are open\n"));
513 if (lp_clustering() &&
514 NT_STATUS_EQUAL(status,
515 NT_STATUS_INTERNAL_DB_ERROR)) {
516 DEBUG(1,("child process cannot initialize "
517 "because connection to CTDB "
522 DEBUG(0,("reinit_after_fork() failed\n"));
523 smb_panic("reinit_after_fork() failed");
526 smbd_setup_sig_term_handler(sconn);
527 smbd_setup_sig_hup_handler(sconn);
529 if (!serverid_register(messaging_server_id(msg_ctx),
530 FLAG_MSG_GENERAL|FLAG_MSG_SMBD
532 |FLAG_MSG_PRINT_GENERAL)) {
533 exit_server_cleanly("Could not register myself in "
537 smbd_process(ev, sconn);
539 exit_server_cleanly("end of child");
544 DEBUG(0,("smbd_accept_connection: sys_fork() failed: %s\n",
548 /* The parent doesn't need this socket */
551 /* Sun May 6 18:56:14 2001 ackley@cs.unm.edu:
552 Clear the closed fd info out of server_fd --
553 and more importantly, out of client_fd in
554 util_sock.c, to avoid a possible
555 getpeername failure if we reopen the logs
556 and use %I in the filename.
561 add_child_pid(s->parent, pid);
564 /* Force parent to check log size after
565 * spawning child. Fix from
566 * klausr@ITAP.Physik.Uni-Stuttgart.De. The
567 * parent smbd will log to logserver.smb. It
568 * writes only two messages for each child
569 * started/finished. But each child writes,
570 * say, 50 messages also in logserver.smb,
571 * begining with the debug_count of the
572 * parent, before the child opens its own log
573 * file logserver.client. In a worst case
574 * scenario the size of logserver.smb would be
575 * checked after about 50*50=2500 messages
578 force_check_log_size();
581 static bool smbd_open_one_socket(struct smbd_parent_context *parent,
582 struct tevent_context *ev_ctx,
583 struct messaging_context *msg_ctx,
584 const struct sockaddr_storage *ifss,
587 struct smbd_open_socket *s;
589 s = talloc(parent, struct smbd_open_socket);
595 s->fd = open_socket_in(SOCK_STREAM,
597 parent->sockets == NULL ? 0 : 2,
601 DEBUG(0,("smbd_open_once_socket: open_socket_in: "
602 "%s\n", strerror(errno)));
605 * We ignore an error here, as we've done before
610 /* ready to listen */
611 set_socket_options(s->fd, "SO_KEEPALIVE");
612 set_socket_options(s->fd, lp_socket_options());
614 /* Set server socket to
615 * non-blocking for the accept. */
616 set_blocking(s->fd, False);
618 if (listen(s->fd, SMBD_LISTEN_BACKLOG) == -1) {
619 DEBUG(0,("open_sockets_smbd: listen: "
620 "%s\n", strerror(errno)));
626 s->fde = tevent_add_fd(ev_ctx,
628 s->fd, TEVENT_FD_READ,
629 smbd_accept_connection,
632 DEBUG(0,("open_sockets_smbd: "
633 "tevent_add_fd: %s\n",
639 tevent_fd_set_close_fn(s->fde, smbd_open_socket_close_fn);
641 DLIST_ADD_END(parent->sockets, s, struct smbd_open_socket *);
646 /****************************************************************************
647 Open the socket communication.
648 ****************************************************************************/
650 static bool open_sockets_smbd(struct smbd_parent_context *parent,
651 struct tevent_context *ev_ctx,
652 struct messaging_context *msg_ctx,
653 const char *smb_ports)
655 int num_interfaces = iface_count();
658 unsigned dns_port = 0;
665 smbd_setup_sig_chld_handler(parent);
667 /* use a reasonable default set of ports - listing on 445 and 139 */
669 ports = lp_smb_ports();
670 if (!ports || !*ports) {
671 ports = talloc_strdup(talloc_tos(), SMB_PORTS);
673 ports = talloc_strdup(talloc_tos(), ports);
676 ports = talloc_strdup(talloc_tos(), smb_ports);
679 if (lp_interfaces() && lp_bind_interfaces_only()) {
680 /* We have been given an interfaces line, and been
681 told to only bind to those interfaces. Create a
682 socket per interface and bind to only these.
685 /* Now open a listen socket for each of the
687 for(i = 0; i < num_interfaces; i++) {
688 const struct sockaddr_storage *ifss =
689 iface_n_sockaddr_storage(i);
694 DEBUG(0,("open_sockets_smbd: "
695 "interface %d has NULL IP address !\n",
701 next_token_talloc(talloc_tos(),&ptr, &tok, " \t,");) {
702 unsigned port = atoi(tok);
703 if (port == 0 || port > 0xffff) {
707 /* Keep the first port for mDNS service
714 if (!smbd_open_one_socket(parent,
724 /* Just bind to 0.0.0.0 - accept connections
729 const char *sock_addr = lp_socket_address();
731 const char *sock_ptr;
733 if (strequal(sock_addr, "0.0.0.0") ||
734 strequal(sock_addr, "::")) {
736 sock_addr = "::,0.0.0.0";
738 sock_addr = "0.0.0.0";
742 for (sock_ptr=sock_addr;
743 next_token_talloc(talloc_tos(), &sock_ptr, &sock_tok, " \t,"); ) {
744 for (ptr=ports; next_token_talloc(talloc_tos(), &ptr, &tok, " \t,"); ) {
745 struct sockaddr_storage ss;
747 unsigned port = atoi(tok);
748 if (port == 0 || port > 0xffff) {
752 /* Keep the first port for mDNS service
759 /* open an incoming socket */
760 if (!interpret_string_addr(&ss, sock_tok,
761 AI_NUMERICHOST|AI_PASSIVE)) {
765 if (!smbd_open_one_socket(parent,
776 if (parent->sockets == NULL) {
777 DEBUG(0,("open_sockets_smbd: No "
778 "sockets available to bind to.\n"));
782 /* Setup the main smbd so that we can get messages. Note that
783 do this after starting listening. This is needed as when in
784 clustered mode, ctdb won't allow us to start doing database
785 operations until it has gone thru a full startup, which
786 includes checking to see that smbd is listening. */
788 if (!serverid_register(messaging_server_id(msg_ctx),
789 FLAG_MSG_GENERAL|FLAG_MSG_SMBD
790 |FLAG_MSG_PRINT_GENERAL
792 DEBUG(0, ("open_sockets_smbd: Failed to register "
793 "myself in serverid.tdb\n"));
797 /* Listen to messages */
799 messaging_register(msg_ctx, NULL, MSG_SHUTDOWN, msg_exit_server);
800 messaging_register(msg_ctx, ev_ctx, MSG_SMB_CONF_UPDATED,
801 smbd_parent_conf_updated);
802 messaging_register(msg_ctx, NULL, MSG_SMB_STAT_CACHE_DELETE,
803 smb_stat_cache_delete);
804 messaging_register(msg_ctx, NULL, MSG_DEBUG, smbd_msg_debug);
805 messaging_register(msg_ctx, ev_ctx, MSG_PRINTER_PCAP,
807 messaging_register(msg_ctx, NULL, MSG_SMB_BRL_VALIDATE,
810 messaging_register(msg_ctx, NULL,
811 ID_CACHE_FLUSH, smbd_parent_id_cache_flush);
812 messaging_register(msg_ctx, NULL,
813 ID_CACHE_DELETE, smbd_parent_id_cache_delete);
814 messaging_register(msg_ctx, NULL,
815 ID_CACHE_KILL, smbd_parent_id_cache_kill);
817 #ifdef CLUSTER_SUPPORT
818 if (lp_clustering()) {
819 ctdbd_register_reconfigure(messaging_ctdbd_connection());
824 messaging_register(msg_ctx, NULL, MSG_SMB_INJECT_FAULT,
828 if (lp_multicast_dns_register() && (dns_port != 0)) {
829 #ifdef WITH_DNSSD_SUPPORT
830 smbd_setup_mdns_registration(ev_ctx,
833 #ifdef WITH_AVAHI_SUPPORT
836 avahi_conn = avahi_start_register(ev_ctx,
839 if (avahi_conn == NULL) {
840 DEBUG(10, ("avahi_start_register failed\n"));
848 static void smbd_parent_loop(struct tevent_context *ev_ctx,
849 struct smbd_parent_context *parent)
851 /* now accept incoming connections - forking a new process
852 for each incoming connection */
853 DEBUG(2,("waiting for connections\n"));
856 TALLOC_CTX *frame = talloc_stackframe();
858 ret = tevent_loop_once(ev_ctx);
860 exit_server_cleanly("tevent_loop_once() error");
866 /* NOTREACHED return True; */
870 /****************************************************************************
871 Initialise connect, service and file structs.
872 ****************************************************************************/
874 static bool init_structs(void )
877 * Set the machine NETBIOS name if not already
878 * set from the config file.
890 static void smbd_parent_sig_term_handler(struct tevent_context *ev,
891 struct tevent_signal *se,
897 exit_server_cleanly("termination signal");
900 static void smbd_parent_sig_hup_handler(struct tevent_context *ev,
901 struct tevent_signal *se,
907 struct smbd_parent_context *parent =
908 talloc_get_type_abort(private_data,
909 struct smbd_parent_context);
911 change_to_root_user();
912 DEBUG(1,("parent: Reloading services after SIGHUP\n"));
913 reload_services(NULL, NULL, false);
915 printing_subsystem_update(parent->ev_ctx, parent->msg_ctx, true);
918 /****************************************************************************
920 ****************************************************************************/
922 /* Declare prototype for build_options() to avoid having to run it through
923 mkproto.h. Mixing $(builddir) and $(srcdir) source files in the current
924 prototype generation system is too complicated. */
926 extern void build_options(bool screen);
928 int main(int argc,const char *argv[])
930 /* shall I run as a daemon */
931 bool is_daemon = false;
932 bool interactive = false;
934 bool no_process_group = false;
935 bool log_stdout = false;
937 char *profile_level = NULL;
940 bool print_build_options = False;
945 OPT_NO_PROCESS_GROUP,
948 struct poptOption long_options[] = {
950 {"daemon", 'D', POPT_ARG_NONE, NULL, OPT_DAEMON, "Become a daemon (default)" },
951 {"interactive", 'i', POPT_ARG_NONE, NULL, OPT_INTERACTIVE, "Run interactive (not a daemon)"},
952 {"foreground", 'F', POPT_ARG_NONE, NULL, OPT_FORK, "Run daemon in foreground (for daemontools, etc.)" },
953 {"no-process-group", '\0', POPT_ARG_NONE, NULL, OPT_NO_PROCESS_GROUP, "Don't create a new process group" },
954 {"log-stdout", 'S', POPT_ARG_NONE, NULL, OPT_LOG_STDOUT, "Log to stdout" },
955 {"build-options", 'b', POPT_ARG_NONE, NULL, 'b', "Print build options" },
956 {"port", 'p', POPT_ARG_STRING, &ports, 0, "Listen on the specified ports"},
957 {"profiling-level", 'P', POPT_ARG_STRING, &profile_level, 0, "Set profiling level","PROFILE_LEVEL"},
959 POPT_COMMON_DYNCONFIG
962 struct smbd_parent_context *parent = NULL;
966 struct tevent_context *ev_ctx;
967 struct messaging_context *msg_ctx;
968 struct tevent_signal *se;
971 * Do this before any other talloc operation
973 talloc_enable_null_tracking();
974 frame = talloc_stackframe();
976 setup_logging(argv[0], DEBUG_DEFAULT_STDOUT);
984 #ifdef HAVE_SET_AUTH_PARAMETERS
985 set_auth_parameters(argc,argv);
988 pc = poptGetContext("smbd", argc, argv, long_options, 0);
989 while((opt = poptGetNextOpt(pc)) != -1) {
994 case OPT_INTERACTIVE:
1000 case OPT_NO_PROCESS_GROUP:
1001 no_process_group = true;
1003 case OPT_LOG_STDOUT:
1007 print_build_options = True;
1010 d_fprintf(stderr, "\nInvalid option %s: %s\n\n",
1011 poptBadOption(pc, 0), poptStrerror(opt));
1012 poptPrintUsage(pc, stderr, 0);
1016 poptFreeContext(pc);
1024 setup_logging(argv[0], DEBUG_STDOUT);
1026 setup_logging(argv[0], DEBUG_FILE);
1029 if (print_build_options) {
1030 build_options(True); /* Display output to screen as well as debug */
1035 /* needed for SecureWare on SCO */
1039 set_remote_machine_name("smbd", False);
1041 if (interactive && (DEBUGLEVEL >= 9)) {
1042 talloc_enable_leak_report();
1045 if (log_stdout && Fork) {
1046 DEBUG(0,("ERROR: Can't log to stdout (-S) unless daemon is in foreground (-F) or interactive (-i)\n"));
1050 /* we want to re-seed early to prevent time delays causing
1051 client problems at a later date. (tridge) */
1052 generate_random_buffer(NULL, 0);
1054 /* get initial effective uid and gid */
1057 /* make absolutely sure we run as root - to handle cases where people
1058 are crazy enough to have it setuid */
1059 gain_root_privilege();
1060 gain_root_group_privilege();
1063 dump_core_setup("smbd", lp_logfile());
1065 /* we are never interested in SIGPIPE */
1066 BlockSignals(True,SIGPIPE);
1069 /* we are never interested in SIGFPE */
1070 BlockSignals(True,SIGFPE);
1073 #if defined(SIGUSR2)
1074 /* We are no longer interested in USR2 */
1075 BlockSignals(True,SIGUSR2);
1078 /* POSIX demands that signals are inherited. If the invoking process has
1079 * these signals masked, we will have problems, as we won't recieve them. */
1080 BlockSignals(False, SIGHUP);
1081 BlockSignals(False, SIGUSR1);
1082 BlockSignals(False, SIGTERM);
1084 /* Ensure we leave no zombies until we
1085 * correctly set up child handling below. */
1089 /* we want total control over the permissions on created files,
1090 so set our umask to 0 */
1095 DEBUG(0,("smbd version %s started.\n", samba_version_string()));
1096 DEBUGADD(0,("%s\n", COPYRIGHT_STARTUP_MESSAGE));
1098 DEBUG(2,("uid=%d gid=%d euid=%d egid=%d\n",
1099 (int)getuid(),(int)getgid(),(int)geteuid(),(int)getegid()));
1101 /* Output the build options to the debug log */
1102 build_options(False);
1104 if (sizeof(uint16) < 2 || sizeof(uint32) < 4) {
1105 DEBUG(0,("ERROR: Samba is not configured correctly for the word size on your machine\n"));
1109 if (!lp_load_initial_only(get_dyn_CONFIGFILE())) {
1110 DEBUG(0, ("error opening config file '%s'\n", get_dyn_CONFIGFILE()));
1114 /* Init the security context and global current_user */
1118 * Initialize the event context. The event context needs to be
1119 * initialized before the messaging context, cause the messaging
1120 * context holds an event context.
1121 * FIXME: This should be s3_tevent_context_init()
1123 ev_ctx = server_event_context();
1124 if (ev_ctx == NULL) {
1129 * Init the messaging context
1130 * FIXME: This should only call messaging_init()
1132 msg_ctx = server_messaging_context();
1133 if (msg_ctx == NULL) {
1138 * Reloading of the printers will not work here as we don't have a
1139 * server info and rpc services set up. It will be called later.
1141 if (!reload_services(NULL, NULL, false)) {
1145 /* ...NOTE... Log files are working from this point! */
1147 DEBUG(3,("loaded services\n"));
1152 if (!profile_setup(msg_ctx, False)) {
1153 DEBUG(0,("ERROR: failed to setup profiling\n"));
1156 if (profile_level != NULL) {
1157 int pl = atoi(profile_level);
1158 struct server_id src;
1160 DEBUG(1, ("setting profiling level: %s\n",profile_level));
1162 set_profile_level(pl, src);
1166 if (!is_daemon && !is_a_socket(0)) {
1168 DEBUG(0,("standard input is not a socket, assuming -D option\n"));
1171 * Setting is_daemon here prevents us from eventually calling
1172 * the open_sockets_inetd()
1178 if (is_daemon && !interactive) {
1179 DEBUG( 3, ( "Becoming a daemon.\n" ) );
1180 become_daemon(Fork, no_process_group, log_stdout);
1183 generate_random_buffer((uint8_t *)&unique_id, sizeof(unique_id));
1184 set_my_unique_id(unique_id);
1188 * If we're interactive we want to set our own process group for
1189 * signal management.
1191 if (interactive && !no_process_group)
1192 setpgid( (pid_t)0, (pid_t)0);
1195 if (!directory_exist(lp_lockdir()))
1196 mkdir(lp_lockdir(), 0755);
1199 pidfile_create("smbd");
1201 status = reinit_after_fork(msg_ctx,
1204 if (!NT_STATUS_IS_OK(status)) {
1205 DEBUG(0,("reinit_after_fork() failed\n"));
1209 smbd_server_conn->msg_ctx = msg_ctx;
1211 parent = talloc_zero(ev_ctx, struct smbd_parent_context);
1213 exit_server("talloc(struct smbd_parent_context) failed");
1215 parent->interactive = interactive;
1216 parent->ev_ctx = ev_ctx;
1217 parent->msg_ctx = msg_ctx;
1220 se = tevent_add_signal(parent->ev_ctx,
1223 smbd_parent_sig_term_handler,
1226 exit_server("failed to setup SIGTERM handler");
1228 se = tevent_add_signal(parent->ev_ctx,
1231 smbd_parent_sig_hup_handler,
1234 exit_server("failed to setup SIGHUP handler");
1237 /* Setup all the TDB's - including CLEAR_IF_FIRST tdb's. */
1239 if (smbd_memcache() == NULL) {
1243 memcache_set_global(smbd_memcache());
1245 /* Initialise the password backed before the global_sam_sid
1246 to ensure that we fetch from ldap before we make a domain sid up */
1248 if(!initialize_password_db(false, ev_ctx))
1251 if (!secrets_init()) {
1252 DEBUG(0, ("ERROR: smbd can not open secrets.tdb\n"));
1256 if (lp_server_role() == ROLE_DOMAIN_BDC || lp_server_role() == ROLE_DOMAIN_PDC) {
1257 struct loadparm_context *lp_ctx = loadparm_init_s3(NULL, loadparm_s3_context());
1258 if (!open_schannel_session_store(NULL, lp_ctx)) {
1259 DEBUG(0,("ERROR: Samba cannot open schannel store for secured NETLOGON operations.\n"));
1262 TALLOC_FREE(lp_ctx);
1265 if(!get_global_sam_sid()) {
1266 DEBUG(0,("ERROR: Samba cannot create a SAM SID.\n"));
1270 if (!sessionid_init()) {
1274 if (!connections_init(True))
1277 if (!locking_init())
1280 if (!messaging_tdb_parent_init(ev_ctx)) {
1284 if (!notify_internal_parent_init(ev_ctx)) {
1288 if (!serverid_parent_init(ev_ctx)) {
1292 if (!W_ERROR_IS_OK(registry_init_full()))
1295 /* Open the share_info.tdb here, so we don't have to open
1296 after the fork on every single connection. This is a small
1297 performance improvment and reduces the total number of system
1299 if (!share_info_db_init()) {
1300 DEBUG(0,("ERROR: failed to load share info db.\n"));
1304 status = init_system_info();
1305 if (!NT_STATUS_IS_OK(status)) {
1306 DEBUG(1, ("ERROR: failed to setup system user info: %s.\n",
1307 nt_errstr(status)));
1311 if (!init_guest_info()) {
1312 DEBUG(0,("ERROR: failed to setup guest info.\n"));
1316 if (!file_init(smbd_server_conn)) {
1317 DEBUG(0, ("ERROR: file_init failed\n"));
1321 /* This MUST be done before start_epmd() because otherwise
1322 * start_epmd() forks and races against dcesrv_ep_setup() to
1323 * call directory_create_or_exist() */
1324 if (!directory_create_or_exist(lp_ncalrpc_dir(), geteuid(), 0755)) {
1325 DEBUG(0, ("Failed to create pipe directory %s - %s\n",
1326 lp_ncalrpc_dir(), strerror(errno)));
1330 if (is_daemon && !interactive) {
1331 if (rpc_epmapper_daemon() == RPC_DAEMON_FORK) {
1332 start_epmd(ev_ctx, msg_ctx);
1336 if (!dcesrv_ep_setup(ev_ctx, msg_ctx)) {
1340 /* only start other daemons if we are running as a daemon
1341 * -- bad things will happen if smbd is launched via inetd
1342 * and we fork a copy of ourselves here */
1343 if (is_daemon && !interactive) {
1345 if (rpc_lsasd_daemon() == RPC_DAEMON_FORK) {
1346 start_lsasd(ev_ctx, msg_ctx);
1349 if (!_lp_disable_spoolss() &&
1350 (rpc_spoolss_daemon() != RPC_DAEMON_DISABLED)) {
1351 bool bgq = lp_parm_bool(-1, "smbd", "backgroundqueue", true);
1353 if (!printing_subsystem_init(ev_ctx, msg_ctx, true, bgq)) {
1357 } else if (!_lp_disable_spoolss() &&
1358 (rpc_spoolss_daemon() != RPC_DAEMON_DISABLED)) {
1359 if (!printing_subsystem_init(ev_ctx, msg_ctx, false, false)) {
1368 /* Started from inetd. fd 0 is the socket. */
1369 /* We will abort gracefully when the client or remote system
1371 smbd_server_conn->sock = dup(0);
1373 /* close our standard file descriptors */
1374 if (!debug_get_output_is_stdout()) {
1375 close_low_fds(False); /* Don't close stderr */
1383 smbd_setup_sig_chld_handler(parent);
1385 smbd_process(ev_ctx, smbd_server_conn);
1387 exit_server_cleanly(NULL);
1391 if (!open_sockets_smbd(parent, ev_ctx, msg_ctx, ports))
1392 exit_server("open_sockets_smbd() failed");
1394 /* do a printer update now that all messaging has been set up,
1395 * before we allow clients to start connecting */
1396 printing_subsystem_update(ev_ctx, msg_ctx, false);
1399 /* make sure we always have a valid stackframe */
1400 frame = talloc_stackframe();
1402 smbd_parent_loop(ev_ctx, parent);
1404 exit_server_cleanly(NULL);