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"
46 struct smbd_open_socket;
47 struct smbd_child_pid;
49 struct smbd_parent_context {
52 struct tevent_context *ev_ctx;
53 struct messaging_context *msg_ctx;
55 /* the list of listening sockets */
56 struct smbd_open_socket *sockets;
58 /* the list of current child processes */
59 struct smbd_child_pid *children;
62 struct timed_event *cleanup_te;
65 struct smbd_open_socket {
66 struct smbd_open_socket *prev, *next;
67 struct smbd_parent_context *parent;
69 struct tevent_fd *fde;
72 struct smbd_child_pid {
73 struct smbd_child_pid *prev, *next;
77 extern void start_epmd(struct tevent_context *ev_ctx,
78 struct messaging_context *msg_ctx);
80 extern void start_lsasd(struct event_context *ev_ctx,
81 struct messaging_context *msg_ctx);
84 extern int dcelogin_atmost_once;
87 /*******************************************************************
88 What to do when smb.conf is updated.
89 ********************************************************************/
91 static void smbd_parent_conf_updated(struct messaging_context *msg,
94 struct server_id server_id,
97 struct tevent_context *ev_ctx =
98 talloc_get_type_abort(private_data, struct tevent_context);
100 DEBUG(10,("smbd_parent_conf_updated: Got message saying smb.conf was "
101 "updated. Reloading.\n"));
102 change_to_root_user();
103 reload_services(NULL, NULL, false);
104 printing_subsystem_update(ev_ctx, msg, false);
107 /*******************************************************************
108 What to do when printcap is updated.
109 ********************************************************************/
111 static void smb_pcap_updated(struct messaging_context *msg,
114 struct server_id server_id,
117 struct tevent_context *ev_ctx =
118 talloc_get_type_abort(private_data, struct tevent_context);
120 DEBUG(10,("Got message saying pcap was updated. Reloading.\n"));
121 change_to_root_user();
122 delete_and_reload_printers(ev_ctx, msg);
125 /*******************************************************************
126 Delete a statcache entry.
127 ********************************************************************/
129 static void smb_stat_cache_delete(struct messaging_context *msg,
132 struct server_id server_id,
135 const char *name = (const char *)data->data;
136 DEBUG(10,("smb_stat_cache_delete: delete name %s\n", name));
137 stat_cache_delete(name);
140 /****************************************************************************
141 Send a SIGTERM to our process group.
142 *****************************************************************************/
144 static void killkids(void)
146 if(am_parent) kill(0,SIGTERM);
149 static void msg_exit_server(struct messaging_context *msg,
152 struct server_id server_id,
155 DEBUG(3, ("got a SHUTDOWN message\n"));
156 exit_server_cleanly(NULL);
160 static void msg_inject_fault(struct messaging_context *msg,
163 struct server_id src,
168 if (data->length != sizeof(sig)) {
169 DEBUG(0, ("Process %s sent bogus signal injection request\n",
170 procid_str_static(&src)));
174 sig = *(int *)data->data;
176 exit_server("internal error injected");
181 DEBUG(0, ("Process %s requested injection of signal %d (%s)\n",
182 procid_str_static(&src), sig, strsignal(sig)));
184 DEBUG(0, ("Process %s requested injection of signal %d\n",
185 procid_str_static(&src), sig));
190 #endif /* DEVELOPER */
192 NTSTATUS messaging_send_to_children(struct messaging_context *msg_ctx,
193 uint32_t msg_type, DATA_BLOB* data)
196 struct smbd_parent_context *parent = am_parent;
197 struct smbd_child_pid *child;
199 if (parent == NULL) {
200 return NT_STATUS_INTERNAL_ERROR;
203 for (child = parent->children; child != NULL; child = child->next) {
204 status = messaging_send(parent->msg_ctx,
205 pid_to_procid(child->pid),
207 if (!NT_STATUS_IS_OK(status)) {
215 * Parent smbd process sets its own debug level first and then
216 * sends a message to all the smbd children to adjust their debug
217 * level to that of the parent.
220 static void smbd_msg_debug(struct messaging_context *msg_ctx,
223 struct server_id server_id,
226 debug_message(msg_ctx, private_data, MSG_DEBUG, server_id, data);
228 messaging_send_to_children(msg_ctx, MSG_DEBUG, data);
231 static void smbd_parent_id_cache_kill(struct messaging_context *msg_ctx,
234 struct server_id server_id,
237 const char *msg = (data && data->data)
238 ? (const char *)data->data : "<NULL>";
239 struct id_cache_ref id;
241 if (!id_cache_ref_parse(msg, &id)) {
242 DEBUG(0, ("Invalid ?ID: %s\n", msg));
246 id_cache_delete_from_cache(&id);
248 messaging_send_to_children(msg_ctx, msg_type, data);
251 static void smbd_parent_id_cache_delete(struct messaging_context *ctx,
254 struct server_id srv_id,
257 id_cache_delete_message(ctx, data, msg_type, srv_id, msg_data);
259 messaging_send_to_children(ctx, msg_type, msg_data);
262 struct smbd_parent_notify_state {
263 struct tevent_context *ev;
264 struct messaging_context *msg;
266 struct notify_context *notify;
269 static int smbd_parent_notify_cleanup(void *private_data);
270 static void smbd_parent_notify_cleanup_done(struct tevent_req *req);
271 static void smbd_parent_notify_proxy_done(struct tevent_req *req);
273 static bool smbd_parent_notify_init(TALLOC_CTX *mem_ctx,
274 struct messaging_context *msg,
275 struct tevent_context *ev)
277 struct smbd_parent_notify_state *state;
278 struct tevent_req *req;
280 state = talloc(mem_ctx, struct smbd_parent_notify_state);
286 state->msgtype = MSG_SMB_NOTIFY_CLEANUP;
288 state->notify = notify_init(state, msg, ev);
289 if (state->notify == NULL) {
292 req = background_job_send(
293 state, state->ev, state->msg, &state->msgtype, 1,
294 lp_parm_int(-1, "smbd", "notify cleanup interval", 60),
295 smbd_parent_notify_cleanup, state->notify);
299 tevent_req_set_callback(req, smbd_parent_notify_cleanup_done, state);
301 if (!lp_clustering()) {
305 req = notify_cluster_proxy_send(state, ev, state->notify);
309 tevent_req_set_callback(req, smbd_parent_notify_proxy_done, state);
317 static int smbd_parent_notify_cleanup(void *private_data)
319 struct notify_context *notify = talloc_get_type_abort(
320 private_data, struct notify_context);
321 notify_cleanup(notify);
322 return lp_parm_int(-1, "smbd", "notify cleanup interval", 60);
325 static void smbd_parent_notify_cleanup_done(struct tevent_req *req)
327 struct smbd_parent_notify_state *state = tevent_req_callback_data(
328 req, struct smbd_parent_notify_state);
331 status = background_job_recv(req);
333 DEBUG(1, ("notify cleanup job ended with %s\n", nt_errstr(status)));
336 * Provide self-healing: Whatever the error condition was, it
337 * will have printed it into log.smbd. Just retrying and
338 * spamming log.smbd once a minute should be fine.
340 req = background_job_send(
341 state, state->ev, state->msg, &state->msgtype, 1, 60,
342 smbd_parent_notify_cleanup, state->notify);
344 DEBUG(1, ("background_job_send failed\n"));
347 tevent_req_set_callback(req, smbd_parent_notify_cleanup_done, state);
350 static void smbd_parent_notify_proxy_done(struct tevent_req *req)
354 ret = notify_cluster_proxy_recv(req);
356 DEBUG(1, ("notify proxy job ended with %s\n", strerror(ret)));
359 static void smb_parent_force_tdis(struct messaging_context *ctx,
362 struct server_id srv_id,
365 messaging_send_to_children(ctx, msg_type, msg_data);
368 static void add_child_pid(struct smbd_parent_context *parent,
371 struct smbd_child_pid *child;
373 child = talloc_zero(parent, struct smbd_child_pid);
375 DEBUG(0, ("Could not add child struct -- malloc failed\n"));
379 DLIST_ADD(parent->children, child);
380 parent->num_children += 1;
384 at most every smbd:cleanuptime seconds (default 20), we scan the BRL
385 and locking database for entries to cleanup. As a side effect this
386 also cleans up dead entries in the connections database (due to the
387 traversal in message_send_all()
389 Using a timer for this prevents a flood of traversals when a large
390 number of clients disconnect at the same time (perhaps due to a
394 static void cleanup_timeout_fn(struct event_context *event_ctx,
395 struct timed_event *te,
399 struct smbd_parent_context *parent =
400 talloc_get_type_abort(private_data,
401 struct smbd_parent_context);
403 parent->cleanup_te = NULL;
405 DEBUG(1,("Cleaning up brl and lock database after unclean shutdown\n"));
406 message_send_all(parent->msg_ctx, MSG_SMB_UNLOCK, NULL, 0, NULL);
407 messaging_send_buf(parent->msg_ctx,
408 messaging_server_id(parent->msg_ctx),
409 MSG_SMB_BRL_VALIDATE, NULL, 0);
412 static void remove_child_pid(struct smbd_parent_context *parent,
414 bool unclean_shutdown)
416 struct smbd_child_pid *child;
417 struct server_id child_id;
419 child_id = pid_to_procid(pid);
421 for (child = parent->children; child != NULL; child = child->next) {
422 if (child->pid == pid) {
423 struct smbd_child_pid *tmp = child;
424 DLIST_REMOVE(parent->children, child);
426 parent->num_children -= 1;
432 /* not all forked child processes are added to the children list */
433 DEBUG(2, ("Could not find child %d -- ignoring\n", (int)pid));
437 if (unclean_shutdown) {
438 /* a child terminated uncleanly so tickle all
439 processes to see if they can grab any of the
442 DEBUG(3,(__location__ " Unclean shutdown of pid %u\n",
444 if (parent->cleanup_te == NULL) {
445 /* call the cleanup timer, but not too often */
446 int cleanup_time = lp_parm_int(-1, "smbd", "cleanuptime", 20);
447 parent->cleanup_te = tevent_add_timer(parent->ev_ctx,
449 timeval_current_ofs(cleanup_time, 0),
452 DEBUG(1,("Scheduled cleanup of brl and lock database after unclean shutdown\n"));
456 if (!serverid_deregister(child_id)) {
457 DEBUG(1, ("Could not remove pid %d from serverid.tdb\n",
462 /****************************************************************************
463 Have we reached the process limit ?
464 ****************************************************************************/
466 static bool allowable_number_of_smbd_processes(struct smbd_parent_context *parent)
468 int max_processes = lp_max_smbd_processes();
473 return parent->num_children < max_processes;
476 static void smbd_sig_chld_handler(struct tevent_context *ev,
477 struct tevent_signal *se,
485 struct smbd_parent_context *parent =
486 talloc_get_type_abort(private_data,
487 struct smbd_parent_context);
489 while ((pid = sys_waitpid(-1, &status, WNOHANG)) > 0) {
490 bool unclean_shutdown = False;
492 /* If the child terminated normally, assume
493 it was an unclean shutdown unless the
496 if (WIFEXITED(status)) {
497 unclean_shutdown = WEXITSTATUS(status);
499 /* If the child terminated due to a signal
500 we always assume it was unclean.
502 if (WIFSIGNALED(status)) {
503 unclean_shutdown = True;
505 remove_child_pid(parent, pid, unclean_shutdown);
509 static void smbd_setup_sig_chld_handler(struct smbd_parent_context *parent)
511 struct tevent_signal *se;
513 se = tevent_add_signal(parent->ev_ctx,
514 parent, /* mem_ctx */
516 smbd_sig_chld_handler,
519 exit_server("failed to setup SIGCHLD handler");
523 static void smbd_open_socket_close_fn(struct tevent_context *ev,
524 struct tevent_fd *fde,
528 /* this might be the socket_wrapper swrap_close() */
532 static void smbd_accept_connection(struct tevent_context *ev,
533 struct tevent_fd *fde,
537 struct smbd_open_socket *s = talloc_get_type_abort(private_data,
538 struct smbd_open_socket);
539 struct messaging_context *msg_ctx = s->parent->msg_ctx;
540 struct sockaddr_storage addr;
541 socklen_t in_addrlen = sizeof(addr);
546 fd = accept(s->fd, (struct sockaddr *)(void *)&addr,&in_addrlen);
547 if (fd == -1 && errno == EINTR)
551 DEBUG(0,("open_sockets_smbd: accept: %s\n",
556 if (s->parent->interactive) {
557 reinit_after_fork(msg_ctx, ev, true);
558 smbd_process(ev, msg_ctx, fd, true);
559 exit_server_cleanly("end of interactive mode");
563 if (!allowable_number_of_smbd_processes(s->parent)) {
569 * Generate a unique id in the parent process so that we use
570 * the global random state in the parent.
572 unique_id = serverid_get_random_unique_id();
576 NTSTATUS status = NT_STATUS_OK;
582 * Can't use TALLOC_FREE here. Nulling out the argument to it
583 * would overwrite memory we've just freed.
585 talloc_free(s->parent);
588 set_my_unique_id(unique_id);
590 /* Stop zombies, the parent explicitly handles
591 * them, counting worker smbds. */
594 status = reinit_after_fork(msg_ctx,
597 if (!NT_STATUS_IS_OK(status)) {
598 if (NT_STATUS_EQUAL(status,
599 NT_STATUS_TOO_MANY_OPENED_FILES)) {
600 DEBUG(0,("child process cannot initialize "
601 "because too many files are open\n"));
604 if (lp_clustering() &&
605 NT_STATUS_EQUAL(status,
606 NT_STATUS_INTERNAL_DB_ERROR)) {
607 DEBUG(1,("child process cannot initialize "
608 "because connection to CTDB "
613 DEBUG(0,("reinit_after_fork() failed\n"));
614 smb_panic("reinit_after_fork() failed");
617 smbd_process(ev, msg_ctx, fd, false);
619 exit_server_cleanly("end of child");
624 DEBUG(0,("smbd_accept_connection: fork() failed: %s\n",
628 /* The parent doesn't need this socket */
631 /* Sun May 6 18:56:14 2001 ackley@cs.unm.edu:
632 Clear the closed fd info out of server_fd --
633 and more importantly, out of client_fd in
634 util_sock.c, to avoid a possible
635 getpeername failure if we reopen the logs
636 and use %I in the filename.
640 add_child_pid(s->parent, pid);
643 /* Force parent to check log size after
644 * spawning child. Fix from
645 * klausr@ITAP.Physik.Uni-Stuttgart.De. The
646 * parent smbd will log to logserver.smb. It
647 * writes only two messages for each child
648 * started/finished. But each child writes,
649 * say, 50 messages also in logserver.smb,
650 * begining with the debug_count of the
651 * parent, before the child opens its own log
652 * file logserver.client. In a worst case
653 * scenario the size of logserver.smb would be
654 * checked after about 50*50=2500 messages
657 force_check_log_size();
660 static bool smbd_open_one_socket(struct smbd_parent_context *parent,
661 struct tevent_context *ev_ctx,
662 struct messaging_context *msg_ctx,
663 const struct sockaddr_storage *ifss,
666 struct smbd_open_socket *s;
668 s = talloc(parent, struct smbd_open_socket);
674 s->fd = open_socket_in(SOCK_STREAM,
676 parent->sockets == NULL ? 0 : 2,
680 DEBUG(0,("smbd_open_once_socket: open_socket_in: "
681 "%s\n", strerror(errno)));
684 * We ignore an error here, as we've done before
689 /* ready to listen */
690 set_socket_options(s->fd, "SO_KEEPALIVE");
691 set_socket_options(s->fd, lp_socket_options());
693 /* Set server socket to
694 * non-blocking for the accept. */
695 set_blocking(s->fd, False);
697 if (listen(s->fd, SMBD_LISTEN_BACKLOG) == -1) {
698 DEBUG(0,("open_sockets_smbd: listen: "
699 "%s\n", strerror(errno)));
705 s->fde = tevent_add_fd(ev_ctx,
707 s->fd, TEVENT_FD_READ,
708 smbd_accept_connection,
711 DEBUG(0,("open_sockets_smbd: "
712 "tevent_add_fd: %s\n",
718 tevent_fd_set_close_fn(s->fde, smbd_open_socket_close_fn);
720 DLIST_ADD_END(parent->sockets, s, struct smbd_open_socket *);
725 /****************************************************************************
726 Open the socket communication.
727 ****************************************************************************/
729 static bool open_sockets_smbd(struct smbd_parent_context *parent,
730 struct tevent_context *ev_ctx,
731 struct messaging_context *msg_ctx,
732 const char *smb_ports)
734 int num_interfaces = iface_count();
737 unsigned dns_port = 0;
744 smbd_setup_sig_chld_handler(parent);
746 /* use a reasonable default set of ports - listing on 445 and 139 */
748 ports = lp_smb_ports();
749 if (!ports || !*ports) {
750 ports = talloc_strdup(talloc_tos(), SMB_PORTS);
752 ports = talloc_strdup(talloc_tos(), ports);
755 ports = talloc_strdup(talloc_tos(), smb_ports);
758 if (lp_interfaces() && lp_bind_interfaces_only()) {
759 /* We have been given an interfaces line, and been
760 told to only bind to those interfaces. Create a
761 socket per interface and bind to only these.
764 /* Now open a listen socket for each of the
766 for(i = 0; i < num_interfaces; i++) {
767 const struct sockaddr_storage *ifss =
768 iface_n_sockaddr_storage(i);
773 DEBUG(0,("open_sockets_smbd: "
774 "interface %d has NULL IP address !\n",
780 next_token_talloc(talloc_tos(),&ptr, &tok, " \t,");) {
781 unsigned port = atoi(tok);
782 if (port == 0 || port > 0xffff) {
786 /* Keep the first port for mDNS service
793 if (!smbd_open_one_socket(parent,
803 /* Just bind to 0.0.0.0 - accept connections
808 const char *sock_addr = lp_socket_address();
810 const char *sock_ptr;
812 if (strequal(sock_addr, "0.0.0.0") ||
813 strequal(sock_addr, "::")) {
815 sock_addr = "::,0.0.0.0";
817 sock_addr = "0.0.0.0";
821 for (sock_ptr=sock_addr;
822 next_token_talloc(talloc_tos(), &sock_ptr, &sock_tok, " \t,"); ) {
823 for (ptr=ports; next_token_talloc(talloc_tos(), &ptr, &tok, " \t,"); ) {
824 struct sockaddr_storage ss;
826 unsigned port = atoi(tok);
827 if (port == 0 || port > 0xffff) {
831 /* Keep the first port for mDNS service
838 /* open an incoming socket */
839 if (!interpret_string_addr(&ss, sock_tok,
840 AI_NUMERICHOST|AI_PASSIVE)) {
844 if (!smbd_open_one_socket(parent,
855 if (parent->sockets == NULL) {
856 DEBUG(0,("open_sockets_smbd: No "
857 "sockets available to bind to.\n"));
861 /* Setup the main smbd so that we can get messages. Note that
862 do this after starting listening. This is needed as when in
863 clustered mode, ctdb won't allow us to start doing database
864 operations until it has gone thru a full startup, which
865 includes checking to see that smbd is listening. */
867 if (!serverid_register(messaging_server_id(msg_ctx),
868 FLAG_MSG_GENERAL|FLAG_MSG_SMBD
869 |FLAG_MSG_PRINT_GENERAL
871 DEBUG(0, ("open_sockets_smbd: Failed to register "
872 "myself in serverid.tdb\n"));
876 /* Listen to messages */
878 messaging_register(msg_ctx, NULL, MSG_SHUTDOWN, msg_exit_server);
879 messaging_register(msg_ctx, ev_ctx, MSG_SMB_CONF_UPDATED,
880 smbd_parent_conf_updated);
881 messaging_register(msg_ctx, NULL, MSG_SMB_STAT_CACHE_DELETE,
882 smb_stat_cache_delete);
883 messaging_register(msg_ctx, NULL, MSG_DEBUG, smbd_msg_debug);
884 messaging_register(msg_ctx, ev_ctx, MSG_PRINTER_PCAP,
886 messaging_register(msg_ctx, NULL, MSG_SMB_BRL_VALIDATE,
888 messaging_register(msg_ctx, NULL, MSG_SMB_FORCE_TDIS,
889 smb_parent_force_tdis);
891 messaging_register(msg_ctx, NULL,
892 ID_CACHE_DELETE, smbd_parent_id_cache_delete);
893 messaging_register(msg_ctx, NULL,
894 ID_CACHE_KILL, smbd_parent_id_cache_kill);
896 #ifdef CLUSTER_SUPPORT
897 if (lp_clustering()) {
898 ctdbd_register_reconfigure(messaging_ctdbd_connection());
903 messaging_register(msg_ctx, NULL, MSG_SMB_INJECT_FAULT,
907 if (lp_multicast_dns_register() && (dns_port != 0)) {
908 #ifdef WITH_DNSSD_SUPPORT
909 smbd_setup_mdns_registration(ev_ctx,
912 #ifdef WITH_AVAHI_SUPPORT
915 avahi_conn = avahi_start_register(ev_ctx,
918 if (avahi_conn == NULL) {
919 DEBUG(10, ("avahi_start_register failed\n"));
929 handle stdin becoming readable when we are in --foreground mode
931 static void smbd_stdin_handler(struct tevent_context *ev,
932 struct tevent_fd *fde,
937 if (read(0, &c, 1) != 1) {
938 /* we have reached EOF on stdin, which means the
939 parent has exited. Shutdown the server */
940 exit_server_cleanly("EOF on stdin");
944 static void smbd_parent_loop(struct tevent_context *ev_ctx,
945 struct smbd_parent_context *parent)
947 /* now accept incoming connections - forking a new process
948 for each incoming connection */
949 DEBUG(2,("waiting for connections\n"));
952 TALLOC_CTX *frame = talloc_stackframe();
954 ret = tevent_loop_once(ev_ctx);
956 exit_server_cleanly("tevent_loop_once() error");
962 /* NOTREACHED return True; */
966 /****************************************************************************
967 Initialise connect, service and file structs.
968 ****************************************************************************/
970 static bool init_structs(void )
973 * Set the machine NETBIOS name if not already
974 * set from the config file.
986 static void smbd_parent_sig_term_handler(struct tevent_context *ev,
987 struct tevent_signal *se,
993 exit_server_cleanly("termination signal");
996 static void smbd_parent_sig_hup_handler(struct tevent_context *ev,
997 struct tevent_signal *se,
1003 struct smbd_parent_context *parent =
1004 talloc_get_type_abort(private_data,
1005 struct smbd_parent_context);
1007 change_to_root_user();
1008 DEBUG(1,("parent: Reloading services after SIGHUP\n"));
1009 reload_services(NULL, NULL, false);
1011 printing_subsystem_update(parent->ev_ctx, parent->msg_ctx, true);
1014 /****************************************************************************
1016 ****************************************************************************/
1018 /* Declare prototype for build_options() to avoid having to run it through
1019 mkproto.h. Mixing $(builddir) and $(srcdir) source files in the current
1020 prototype generation system is too complicated. */
1022 extern void build_options(bool screen);
1024 int main(int argc,const char *argv[])
1026 /* shall I run as a daemon */
1027 bool is_daemon = false;
1028 bool interactive = false;
1030 bool no_process_group = false;
1031 bool log_stdout = false;
1033 char *profile_level = NULL;
1036 bool print_build_options = False;
1041 OPT_NO_PROCESS_GROUP,
1044 struct poptOption long_options[] = {
1046 {"daemon", 'D', POPT_ARG_NONE, NULL, OPT_DAEMON, "Become a daemon (default)" },
1047 {"interactive", 'i', POPT_ARG_NONE, NULL, OPT_INTERACTIVE, "Run interactive (not a daemon)"},
1048 {"foreground", 'F', POPT_ARG_NONE, NULL, OPT_FORK, "Run daemon in foreground (for daemontools, etc.)" },
1049 {"no-process-group", '\0', POPT_ARG_NONE, NULL, OPT_NO_PROCESS_GROUP, "Don't create a new process group" },
1050 {"log-stdout", 'S', POPT_ARG_NONE, NULL, OPT_LOG_STDOUT, "Log to stdout" },
1051 {"build-options", 'b', POPT_ARG_NONE, NULL, 'b', "Print build options" },
1052 {"port", 'p', POPT_ARG_STRING, &ports, 0, "Listen on the specified ports"},
1053 {"profiling-level", 'P', POPT_ARG_STRING, &profile_level, 0, "Set profiling level","PROFILE_LEVEL"},
1055 POPT_COMMON_DYNCONFIG
1058 struct smbd_parent_context *parent = NULL;
1061 struct tevent_context *ev_ctx;
1062 struct messaging_context *msg_ctx;
1063 struct tevent_signal *se;
1064 char *np_dir = NULL;
1067 * Do this before any other talloc operation
1069 talloc_enable_null_tracking();
1070 frame = talloc_stackframe();
1072 setup_logging(argv[0], DEBUG_DEFAULT_STDOUT);
1076 smbd_init_globals();
1080 #ifdef HAVE_SET_AUTH_PARAMETERS
1081 set_auth_parameters(argc,argv);
1084 pc = poptGetContext("smbd", argc, argv, long_options, 0);
1085 while((opt = poptGetNextOpt(pc)) != -1) {
1090 case OPT_INTERACTIVE:
1096 case OPT_NO_PROCESS_GROUP:
1097 no_process_group = true;
1099 case OPT_LOG_STDOUT:
1103 print_build_options = True;
1106 d_fprintf(stderr, "\nInvalid option %s: %s\n\n",
1107 poptBadOption(pc, 0), poptStrerror(opt));
1108 poptPrintUsage(pc, stderr, 0);
1112 poptFreeContext(pc);
1120 setup_logging(argv[0], DEBUG_STDOUT);
1122 setup_logging(argv[0], DEBUG_FILE);
1125 if (print_build_options) {
1126 build_options(True); /* Display output to screen as well as debug */
1131 /* needed for SecureWare on SCO */
1135 set_remote_machine_name("smbd", False);
1137 if (interactive && (DEBUGLEVEL >= 9)) {
1138 talloc_enable_leak_report();
1141 if (log_stdout && Fork) {
1142 DEBUG(0,("ERROR: Can't log to stdout (-S) unless daemon is in foreground (-F) or interactive (-i)\n"));
1146 /* we want to re-seed early to prevent time delays causing
1147 client problems at a later date. (tridge) */
1148 generate_random_buffer(NULL, 0);
1150 /* get initial effective uid and gid */
1153 /* make absolutely sure we run as root - to handle cases where people
1154 are crazy enough to have it setuid */
1155 gain_root_privilege();
1156 gain_root_group_privilege();
1159 dump_core_setup("smbd", lp_logfile());
1161 /* we are never interested in SIGPIPE */
1162 BlockSignals(True,SIGPIPE);
1165 /* we are never interested in SIGFPE */
1166 BlockSignals(True,SIGFPE);
1169 #if defined(SIGUSR2)
1170 /* We are no longer interested in USR2 */
1171 BlockSignals(True,SIGUSR2);
1174 /* POSIX demands that signals are inherited. If the invoking process has
1175 * these signals masked, we will have problems, as we won't recieve them. */
1176 BlockSignals(False, SIGHUP);
1177 BlockSignals(False, SIGUSR1);
1178 BlockSignals(False, SIGTERM);
1180 /* Ensure we leave no zombies until we
1181 * correctly set up child handling below. */
1185 /* we want total control over the permissions on created files,
1186 so set our umask to 0 */
1191 DEBUG(0,("smbd version %s started.\n", samba_version_string()));
1192 DEBUGADD(0,("%s\n", COPYRIGHT_STARTUP_MESSAGE));
1194 DEBUG(2,("uid=%d gid=%d euid=%d egid=%d\n",
1195 (int)getuid(),(int)getgid(),(int)geteuid(),(int)getegid()));
1197 /* Output the build options to the debug log */
1198 build_options(False);
1200 if (sizeof(uint16) < 2 || sizeof(uint32) < 4) {
1201 DEBUG(0,("ERROR: Samba is not configured correctly for the word size on your machine\n"));
1205 if (!lp_load_initial_only(get_dyn_CONFIGFILE())) {
1206 DEBUG(0, ("error opening config file '%s'\n", get_dyn_CONFIGFILE()));
1210 /* Init the security context and global current_user */
1214 * Initialize the event context. The event context needs to be
1215 * initialized before the messaging context, cause the messaging
1216 * context holds an event context.
1217 * FIXME: This should be s3_tevent_context_init()
1219 ev_ctx = server_event_context();
1220 if (ev_ctx == NULL) {
1225 * Init the messaging context
1226 * FIXME: This should only call messaging_init()
1228 msg_ctx = server_messaging_context();
1229 if (msg_ctx == NULL) {
1234 * Reloading of the printers will not work here as we don't have a
1235 * server info and rpc services set up. It will be called later.
1237 if (!reload_services(NULL, NULL, false)) {
1241 /* ...NOTE... Log files are working from this point! */
1243 DEBUG(3,("loaded services\n"));
1248 if (!profile_setup(msg_ctx, False)) {
1249 DEBUG(0,("ERROR: failed to setup profiling\n"));
1252 if (profile_level != NULL) {
1253 int pl = atoi(profile_level);
1254 struct server_id src;
1256 DEBUG(1, ("setting profiling level: %s\n",profile_level));
1258 set_profile_level(pl, src);
1262 if (!is_daemon && !is_a_socket(0)) {
1264 DEBUG(0,("standard input is not a socket, assuming -D option\n"));
1267 * Setting is_daemon here prevents us from eventually calling
1268 * the open_sockets_inetd()
1274 if (is_daemon && !interactive) {
1275 DEBUG( 3, ( "Becoming a daemon.\n" ) );
1276 become_daemon(Fork, no_process_group, log_stdout);
1279 set_my_unique_id(serverid_get_random_unique_id());
1283 * If we're interactive we want to set our own process group for
1284 * signal management.
1286 if (interactive && !no_process_group)
1287 setpgid( (pid_t)0, (pid_t)0);
1290 if (!directory_exist(lp_lockdir()))
1291 mkdir(lp_lockdir(), 0755);
1293 if (!directory_exist(lp_piddir()))
1294 mkdir(lp_piddir(), 0755);
1297 pidfile_create("smbd");
1299 status = reinit_after_fork(msg_ctx,
1302 if (!NT_STATUS_IS_OK(status)) {
1303 DEBUG(0,("reinit_after_fork() failed\n"));
1309 * Do not initialize the parent-child-pipe before becoming a
1310 * daemon: this is used to detect a died parent in the child
1313 status = init_before_fork();
1314 if (!NT_STATUS_IS_OK(status)) {
1315 DEBUG(0, ("init_before_fork failed: %s\n", nt_errstr(status)));
1320 parent = talloc_zero(ev_ctx, struct smbd_parent_context);
1322 exit_server("talloc(struct smbd_parent_context) failed");
1324 parent->interactive = interactive;
1325 parent->ev_ctx = ev_ctx;
1326 parent->msg_ctx = msg_ctx;
1329 se = tevent_add_signal(parent->ev_ctx,
1332 smbd_parent_sig_term_handler,
1335 exit_server("failed to setup SIGTERM handler");
1337 se = tevent_add_signal(parent->ev_ctx,
1340 smbd_parent_sig_hup_handler,
1343 exit_server("failed to setup SIGHUP handler");
1346 /* Setup all the TDB's - including CLEAR_IF_FIRST tdb's. */
1348 if (smbd_memcache() == NULL) {
1352 memcache_set_global(smbd_memcache());
1354 /* Initialise the password backed before the global_sam_sid
1355 to ensure that we fetch from ldap before we make a domain sid up */
1357 if(!initialize_password_db(false, ev_ctx))
1360 if (!secrets_init()) {
1361 DEBUG(0, ("ERROR: smbd can not open secrets.tdb\n"));
1365 if (lp_server_role() == ROLE_DOMAIN_BDC || lp_server_role() == ROLE_DOMAIN_PDC) {
1366 struct loadparm_context *lp_ctx = loadparm_init_s3(NULL, loadparm_s3_context());
1367 if (!open_schannel_session_store(NULL, lp_ctx)) {
1368 DEBUG(0,("ERROR: Samba cannot open schannel store for secured NETLOGON operations.\n"));
1371 TALLOC_FREE(lp_ctx);
1374 if(!get_global_sam_sid()) {
1375 DEBUG(0,("ERROR: Samba cannot create a SAM SID.\n"));
1379 if (!sessionid_init()) {
1383 if (!connections_init(True))
1386 if (!locking_init())
1389 if (!messaging_tdb_parent_init(ev_ctx)) {
1393 if (!smbd_parent_notify_init(NULL, msg_ctx, ev_ctx)) {
1397 if (!serverid_parent_init(ev_ctx)) {
1401 if (!W_ERROR_IS_OK(registry_init_full()))
1404 /* Open the share_info.tdb here, so we don't have to open
1405 after the fork on every single connection. This is a small
1406 performance improvment and reduces the total number of system
1408 if (!share_info_db_init()) {
1409 DEBUG(0,("ERROR: failed to load share info db.\n"));
1413 status = init_system_session_info();
1414 if (!NT_STATUS_IS_OK(status)) {
1415 DEBUG(1, ("ERROR: failed to setup system user info: %s.\n",
1416 nt_errstr(status)));
1420 if (!init_guest_info()) {
1421 DEBUG(0,("ERROR: failed to setup guest info.\n"));
1425 if (!file_init_global()) {
1426 DEBUG(0, ("ERROR: file_init_global() failed\n"));
1430 /* This MUST be done before start_epmd() because otherwise
1431 * start_epmd() forks and races against dcesrv_ep_setup() to
1432 * call directory_create_or_exist() */
1433 if (!directory_create_or_exist(lp_ncalrpc_dir(), geteuid(), 0755)) {
1434 DEBUG(0, ("Failed to create pipe directory %s - %s\n",
1435 lp_ncalrpc_dir(), strerror(errno)));
1439 np_dir = talloc_asprintf(talloc_tos(), "%s/np", lp_ncalrpc_dir());
1441 DEBUG(0, ("%s: Out of memory\n", __location__));
1445 if (!directory_create_or_exist(np_dir, geteuid(), 0700)) {
1446 DEBUG(0, ("Failed to create pipe directory %s - %s\n",
1447 np_dir, strerror(errno)));
1451 if (is_daemon && !interactive) {
1452 if (rpc_epmapper_daemon() == RPC_DAEMON_FORK) {
1453 start_epmd(ev_ctx, msg_ctx);
1457 /* only start other daemons if we are running as a daemon
1458 * -- bad things will happen if smbd is launched via inetd
1459 * and we fork a copy of ourselves here */
1460 if (is_daemon && !interactive) {
1462 if (rpc_lsasd_daemon() == RPC_DAEMON_FORK) {
1463 start_lsasd(ev_ctx, msg_ctx);
1466 if (!lp__disable_spoolss() &&
1467 (rpc_spoolss_daemon() != RPC_DAEMON_DISABLED)) {
1468 bool bgq = lp_parm_bool(-1, "smbd", "backgroundqueue", true);
1470 if (!printing_subsystem_init(ev_ctx, msg_ctx, true, bgq)) {
1474 } else if (!lp__disable_spoolss() &&
1475 (rpc_spoolss_daemon() != RPC_DAEMON_DISABLED)) {
1476 if (!printing_subsystem_init(ev_ctx, msg_ctx, false, false)) {
1481 if (!dcesrv_ep_setup(ev_ctx, msg_ctx)) {
1491 /* Started from inetd. fd 0 is the socket. */
1492 /* We will abort gracefully when the client or remote system
1496 /* close stdin, stdout (if not logging to it), but not stderr */
1497 close_low_fds(true, !debug_get_output_is_stdout(), false);
1504 smbd_setup_sig_chld_handler(parent);
1506 smbd_process(ev_ctx, msg_ctx, sock, true);
1508 exit_server_cleanly(NULL);
1512 if (!open_sockets_smbd(parent, ev_ctx, msg_ctx, ports))
1513 exit_server("open_sockets_smbd() failed");
1515 /* do a printer update now that all messaging has been set up,
1516 * before we allow clients to start connecting */
1517 printing_subsystem_update(ev_ctx, msg_ctx, false);
1520 /* make sure we always have a valid stackframe */
1521 frame = talloc_stackframe();
1524 /* if we are running in the foreground then look for
1525 EOF on stdin, and exit if it happens. This allows
1526 us to die if the parent process dies
1528 tevent_add_fd(ev_ctx, parent, 0, TEVENT_FD_READ, smbd_stdin_handler, NULL);
1531 smbd_parent_loop(ev_ctx, parent);
1533 exit_server_cleanly(NULL);