2 Unix SMB/CIFS implementation.
3 Main SMB server routines
4 Copyright (C) Andrew Tridgell 1992-1998
5 Copyright (C) Martin Pool 2002
6 Copyright (C) Jelmer Vernooij 2002-2003
7 Copyright (C) Volker Lendecke 1993-2007
8 Copyright (C) Jeremy Allison 1993-2007
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 3 of the License, or
13 (at your option) any later version.
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License
21 along with this program. If not, see <http://www.gnu.org/licenses/>.
25 #include "system/filesys.h"
26 #include "popt_common.h"
27 #include "smbd/smbd.h"
28 #include "smbd/globals.h"
29 #include "registry/reg_init_full.h"
30 #include "libcli/auth/schannel.h"
33 #include "ctdbd_conn.h"
34 #include "printing/queue_process.h"
35 #include "rpc_server/rpc_service_setup.h"
36 #include "rpc_server/rpc_config.h"
41 #include "smbprofile.h"
42 #include "lib/id_cache.h"
43 #include "lib/param/param.h"
44 #include "lib/background.h"
45 #include "lib/conn_tdb.h"
47 struct smbd_open_socket;
48 struct smbd_child_pid;
50 struct smbd_parent_context {
53 struct tevent_context *ev_ctx;
54 struct messaging_context *msg_ctx;
56 /* the list of listening sockets */
57 struct smbd_open_socket *sockets;
59 /* the list of current child processes */
60 struct smbd_child_pid *children;
63 struct timed_event *cleanup_te;
66 struct smbd_open_socket {
67 struct smbd_open_socket *prev, *next;
68 struct smbd_parent_context *parent;
70 struct tevent_fd *fde;
73 struct smbd_child_pid {
74 struct smbd_child_pid *prev, *next;
78 extern void start_epmd(struct tevent_context *ev_ctx,
79 struct messaging_context *msg_ctx);
81 extern void start_lsasd(struct event_context *ev_ctx,
82 struct messaging_context *msg_ctx);
85 extern int dcelogin_atmost_once;
88 /*******************************************************************
89 What to do when smb.conf is updated.
90 ********************************************************************/
92 static void smbd_parent_conf_updated(struct messaging_context *msg,
95 struct server_id server_id,
98 struct tevent_context *ev_ctx =
99 talloc_get_type_abort(private_data, struct tevent_context);
101 DEBUG(10,("smbd_parent_conf_updated: Got message saying smb.conf was "
102 "updated. Reloading.\n"));
103 change_to_root_user();
104 reload_services(NULL, NULL, false);
105 printing_subsystem_update(ev_ctx, msg, false);
108 /*******************************************************************
109 What to do when printcap is updated.
110 ********************************************************************/
112 static void smb_pcap_updated(struct messaging_context *msg,
115 struct server_id server_id,
118 struct tevent_context *ev_ctx =
119 talloc_get_type_abort(private_data, struct tevent_context);
121 DEBUG(10,("Got message saying pcap was updated. Reloading.\n"));
122 change_to_root_user();
123 delete_and_reload_printers(ev_ctx, msg);
126 /*******************************************************************
127 Delete a statcache entry.
128 ********************************************************************/
130 static void smb_stat_cache_delete(struct messaging_context *msg,
133 struct server_id server_id,
136 const char *name = (const char *)data->data;
137 DEBUG(10,("smb_stat_cache_delete: delete name %s\n", name));
138 stat_cache_delete(name);
141 /****************************************************************************
142 Send a SIGTERM to our process group.
143 *****************************************************************************/
145 static void killkids(void)
147 if(am_parent) kill(0,SIGTERM);
150 static void msg_exit_server(struct messaging_context *msg,
153 struct server_id server_id,
156 DEBUG(3, ("got a SHUTDOWN message\n"));
157 exit_server_cleanly(NULL);
161 static void msg_inject_fault(struct messaging_context *msg,
164 struct server_id src,
169 if (data->length != sizeof(sig)) {
170 DEBUG(0, ("Process %s sent bogus signal injection request\n",
171 procid_str_static(&src)));
175 sig = *(int *)data->data;
177 exit_server("internal error injected");
182 DEBUG(0, ("Process %s requested injection of signal %d (%s)\n",
183 procid_str_static(&src), sig, strsignal(sig)));
185 DEBUG(0, ("Process %s requested injection of signal %d\n",
186 procid_str_static(&src), sig));
191 #endif /* DEVELOPER */
193 NTSTATUS messaging_send_to_children(struct messaging_context *msg_ctx,
194 uint32_t msg_type, DATA_BLOB* data)
197 struct smbd_parent_context *parent = am_parent;
198 struct smbd_child_pid *child;
200 if (parent == NULL) {
201 return NT_STATUS_INTERNAL_ERROR;
204 for (child = parent->children; child != NULL; child = child->next) {
205 status = messaging_send(parent->msg_ctx,
206 pid_to_procid(child->pid),
208 if (!NT_STATUS_IS_OK(status)) {
216 * Parent smbd process sets its own debug level first and then
217 * sends a message to all the smbd children to adjust their debug
218 * level to that of the parent.
221 static void smbd_msg_debug(struct messaging_context *msg_ctx,
224 struct server_id server_id,
227 debug_message(msg_ctx, private_data, MSG_DEBUG, server_id, data);
229 messaging_send_to_children(msg_ctx, MSG_DEBUG, data);
232 static void smbd_parent_id_cache_kill(struct messaging_context *msg_ctx,
235 struct server_id server_id,
238 const char *msg = (data && data->data)
239 ? (const char *)data->data : "<NULL>";
240 struct id_cache_ref id;
242 if (!id_cache_ref_parse(msg, &id)) {
243 DEBUG(0, ("Invalid ?ID: %s\n", msg));
247 id_cache_delete_from_cache(&id);
249 messaging_send_to_children(msg_ctx, msg_type, data);
252 static void smbd_parent_id_cache_delete(struct messaging_context *ctx,
255 struct server_id srv_id,
258 id_cache_delete_message(ctx, data, msg_type, srv_id, msg_data);
260 messaging_send_to_children(ctx, msg_type, msg_data);
263 struct smbd_parent_notify_state {
264 struct tevent_context *ev;
265 struct messaging_context *msg;
267 struct notify_context *notify;
270 static int smbd_parent_notify_cleanup(void *private_data);
271 static void smbd_parent_notify_cleanup_done(struct tevent_req *req);
272 static void smbd_parent_notify_proxy_done(struct tevent_req *req);
274 static bool smbd_parent_notify_init(TALLOC_CTX *mem_ctx,
275 struct messaging_context *msg,
276 struct tevent_context *ev)
278 struct smbd_parent_notify_state *state;
279 struct tevent_req *req;
281 state = talloc(mem_ctx, struct smbd_parent_notify_state);
287 state->msgtype = MSG_SMB_NOTIFY_CLEANUP;
289 state->notify = notify_init(state, msg, ev);
290 if (state->notify == NULL) {
293 req = background_job_send(
294 state, state->ev, state->msg, &state->msgtype, 1,
295 lp_parm_int(-1, "smbd", "notify cleanup interval", 60),
296 smbd_parent_notify_cleanup, state->notify);
300 tevent_req_set_callback(req, smbd_parent_notify_cleanup_done, state);
302 if (!lp_clustering()) {
306 req = notify_cluster_proxy_send(state, ev, state->notify);
310 tevent_req_set_callback(req, smbd_parent_notify_proxy_done, state);
318 static int smbd_parent_notify_cleanup(void *private_data)
320 struct notify_context *notify = talloc_get_type_abort(
321 private_data, struct notify_context);
322 notify_cleanup(notify);
323 return lp_parm_int(-1, "smbd", "notify cleanup interval", 60);
326 static void smbd_parent_notify_cleanup_done(struct tevent_req *req)
328 struct smbd_parent_notify_state *state = tevent_req_callback_data(
329 req, struct smbd_parent_notify_state);
332 status = background_job_recv(req);
334 DEBUG(1, ("notify cleanup job ended with %s\n", nt_errstr(status)));
337 * Provide self-healing: Whatever the error condition was, it
338 * will have printed it into log.smbd. Just retrying and
339 * spamming log.smbd once a minute should be fine.
341 req = background_job_send(
342 state, state->ev, state->msg, &state->msgtype, 1, 60,
343 smbd_parent_notify_cleanup, state->notify);
345 DEBUG(1, ("background_job_send failed\n"));
348 tevent_req_set_callback(req, smbd_parent_notify_cleanup_done, state);
351 static void smbd_parent_notify_proxy_done(struct tevent_req *req)
355 ret = notify_cluster_proxy_recv(req);
357 DEBUG(1, ("notify proxy job ended with %s\n", strerror(ret)));
360 static void smb_parent_force_tdis(struct messaging_context *ctx,
363 struct server_id srv_id,
366 messaging_send_to_children(ctx, msg_type, msg_data);
369 static void add_child_pid(struct smbd_parent_context *parent,
372 struct smbd_child_pid *child;
374 child = talloc_zero(parent, struct smbd_child_pid);
376 DEBUG(0, ("Could not add child struct -- malloc failed\n"));
380 DLIST_ADD(parent->children, child);
381 parent->num_children += 1;
385 at most every smbd:cleanuptime seconds (default 20), we scan the BRL
386 and locking database for entries to cleanup. As a side effect this
387 also cleans up dead entries in the connections database (due to the
388 traversal in message_send_all()
390 Using a timer for this prevents a flood of traversals when a large
391 number of clients disconnect at the same time (perhaps due to a
395 static void cleanup_timeout_fn(struct event_context *event_ctx,
396 struct timed_event *te,
400 struct smbd_parent_context *parent =
401 talloc_get_type_abort(private_data,
402 struct smbd_parent_context);
404 parent->cleanup_te = NULL;
406 DEBUG(1,("Cleaning up brl and lock database after unclean shutdown\n"));
407 message_send_all(parent->msg_ctx, MSG_SMB_UNLOCK, NULL, 0, NULL);
408 messaging_send_buf(parent->msg_ctx,
409 messaging_server_id(parent->msg_ctx),
410 MSG_SMB_BRL_VALIDATE, NULL, 0);
413 static void remove_child_pid(struct smbd_parent_context *parent,
415 bool unclean_shutdown)
417 struct smbd_child_pid *child;
418 struct server_id child_id;
420 child_id = pid_to_procid(pid);
422 for (child = parent->children; child != NULL; child = child->next) {
423 if (child->pid == pid) {
424 struct smbd_child_pid *tmp = child;
425 DLIST_REMOVE(parent->children, child);
427 parent->num_children -= 1;
433 /* not all forked child processes are added to the children list */
434 DEBUG(2, ("Could not find child %d -- ignoring\n", (int)pid));
438 if (unclean_shutdown) {
439 /* a child terminated uncleanly so tickle all
440 processes to see if they can grab any of the
443 DEBUG(3,(__location__ " Unclean shutdown of pid %u\n",
445 if (parent->cleanup_te == NULL) {
446 /* call the cleanup timer, but not too often */
447 int cleanup_time = lp_parm_int(-1, "smbd", "cleanuptime", 20);
448 parent->cleanup_te = tevent_add_timer(parent->ev_ctx,
450 timeval_current_ofs(cleanup_time, 0),
453 DEBUG(1,("Scheduled cleanup of brl and lock database after unclean shutdown\n"));
457 if (!serverid_deregister(child_id)) {
458 DEBUG(1, ("Could not remove pid %d from serverid.tdb\n",
463 /****************************************************************************
464 Have we reached the process limit ?
465 ****************************************************************************/
467 static bool allowable_number_of_smbd_processes(struct smbd_parent_context *parent)
469 int max_processes = lp_max_smbd_processes();
474 return parent->num_children < max_processes;
477 static void smbd_sig_chld_handler(struct tevent_context *ev,
478 struct tevent_signal *se,
486 struct smbd_parent_context *parent =
487 talloc_get_type_abort(private_data,
488 struct smbd_parent_context);
490 while ((pid = sys_waitpid(-1, &status, WNOHANG)) > 0) {
491 bool unclean_shutdown = False;
493 /* If the child terminated normally, assume
494 it was an unclean shutdown unless the
497 if (WIFEXITED(status)) {
498 unclean_shutdown = WEXITSTATUS(status);
500 /* If the child terminated due to a signal
501 we always assume it was unclean.
503 if (WIFSIGNALED(status)) {
504 unclean_shutdown = True;
506 remove_child_pid(parent, pid, unclean_shutdown);
510 static void smbd_setup_sig_chld_handler(struct smbd_parent_context *parent)
512 struct tevent_signal *se;
514 se = tevent_add_signal(parent->ev_ctx,
515 parent, /* mem_ctx */
517 smbd_sig_chld_handler,
520 exit_server("failed to setup SIGCHLD handler");
524 static void smbd_open_socket_close_fn(struct tevent_context *ev,
525 struct tevent_fd *fde,
529 /* this might be the socket_wrapper swrap_close() */
533 static void smbd_accept_connection(struct tevent_context *ev,
534 struct tevent_fd *fde,
538 struct smbd_open_socket *s = talloc_get_type_abort(private_data,
539 struct smbd_open_socket);
540 struct messaging_context *msg_ctx = s->parent->msg_ctx;
541 struct sockaddr_storage addr;
542 socklen_t in_addrlen = sizeof(addr);
547 fd = accept(s->fd, (struct sockaddr *)(void *)&addr,&in_addrlen);
548 if (fd == -1 && errno == EINTR)
552 DEBUG(0,("open_sockets_smbd: accept: %s\n",
557 if (s->parent->interactive) {
558 reinit_after_fork(msg_ctx, ev, true);
559 smbd_process(ev, msg_ctx, fd, true);
560 exit_server_cleanly("end of interactive mode");
564 if (!allowable_number_of_smbd_processes(s->parent)) {
570 * Generate a unique id in the parent process so that we use
571 * the global random state in the parent.
573 unique_id = serverid_get_random_unique_id();
577 NTSTATUS status = NT_STATUS_OK;
583 * Can't use TALLOC_FREE here. Nulling out the argument to it
584 * would overwrite memory we've just freed.
586 talloc_free(s->parent);
589 set_my_unique_id(unique_id);
591 /* Stop zombies, the parent explicitly handles
592 * them, counting worker smbds. */
595 status = reinit_after_fork(msg_ctx,
598 if (!NT_STATUS_IS_OK(status)) {
599 if (NT_STATUS_EQUAL(status,
600 NT_STATUS_TOO_MANY_OPENED_FILES)) {
601 DEBUG(0,("child process cannot initialize "
602 "because too many files are open\n"));
605 if (lp_clustering() &&
606 NT_STATUS_EQUAL(status,
607 NT_STATUS_INTERNAL_DB_ERROR)) {
608 DEBUG(1,("child process cannot initialize "
609 "because connection to CTDB "
614 DEBUG(0,("reinit_after_fork() failed\n"));
615 smb_panic("reinit_after_fork() failed");
618 smbd_process(ev, msg_ctx, fd, false);
620 exit_server_cleanly("end of child");
625 DEBUG(0,("smbd_accept_connection: fork() failed: %s\n",
629 /* The parent doesn't need this socket */
632 /* Sun May 6 18:56:14 2001 ackley@cs.unm.edu:
633 Clear the closed fd info out of server_fd --
634 and more importantly, out of client_fd in
635 util_sock.c, to avoid a possible
636 getpeername failure if we reopen the logs
637 and use %I in the filename.
641 add_child_pid(s->parent, pid);
644 /* Force parent to check log size after
645 * spawning child. Fix from
646 * klausr@ITAP.Physik.Uni-Stuttgart.De. The
647 * parent smbd will log to logserver.smb. It
648 * writes only two messages for each child
649 * started/finished. But each child writes,
650 * say, 50 messages also in logserver.smb,
651 * begining with the debug_count of the
652 * parent, before the child opens its own log
653 * file logserver.client. In a worst case
654 * scenario the size of logserver.smb would be
655 * checked after about 50*50=2500 messages
658 force_check_log_size();
661 static bool smbd_open_one_socket(struct smbd_parent_context *parent,
662 struct tevent_context *ev_ctx,
663 struct messaging_context *msg_ctx,
664 const struct sockaddr_storage *ifss,
667 struct smbd_open_socket *s;
669 s = talloc(parent, struct smbd_open_socket);
675 s->fd = open_socket_in(SOCK_STREAM,
677 parent->sockets == NULL ? 0 : 2,
681 DEBUG(0,("smbd_open_once_socket: open_socket_in: "
682 "%s\n", strerror(errno)));
685 * We ignore an error here, as we've done before
690 /* ready to listen */
691 set_socket_options(s->fd, "SO_KEEPALIVE");
692 set_socket_options(s->fd, lp_socket_options());
694 /* Set server socket to
695 * non-blocking for the accept. */
696 set_blocking(s->fd, False);
698 if (listen(s->fd, SMBD_LISTEN_BACKLOG) == -1) {
699 DEBUG(0,("open_sockets_smbd: listen: "
700 "%s\n", strerror(errno)));
706 s->fde = tevent_add_fd(ev_ctx,
708 s->fd, TEVENT_FD_READ,
709 smbd_accept_connection,
712 DEBUG(0,("open_sockets_smbd: "
713 "tevent_add_fd: %s\n",
719 tevent_fd_set_close_fn(s->fde, smbd_open_socket_close_fn);
721 DLIST_ADD_END(parent->sockets, s, struct smbd_open_socket *);
726 /****************************************************************************
727 Open the socket communication.
728 ****************************************************************************/
730 static bool open_sockets_smbd(struct smbd_parent_context *parent,
731 struct tevent_context *ev_ctx,
732 struct messaging_context *msg_ctx,
733 const char *smb_ports)
735 int num_interfaces = iface_count();
738 unsigned dns_port = 0;
745 smbd_setup_sig_chld_handler(parent);
747 ports = lp_smb_ports();
749 /* use a reasonable default set of ports - listing on 445 and 139 */
751 ports = (const char **)str_list_make_v3(talloc_tos(), smb_ports, NULL);
754 if (lp_interfaces() && lp_bind_interfaces_only()) {
755 /* We have been given an interfaces line, and been
756 told to only bind to those interfaces. Create a
757 socket per interface and bind to only these.
760 /* Now open a listen socket for each of the
762 for(i = 0; i < num_interfaces; i++) {
763 const struct sockaddr_storage *ifss =
764 iface_n_sockaddr_storage(i);
766 DEBUG(0,("open_sockets_smbd: "
767 "interface %d has NULL IP address !\n",
772 for (j = 0; ports && ports[j]; j++) {
773 unsigned port = atoi(ports[j]);
774 if (port == 0 || port > 0xffff) {
778 /* Keep the first port for mDNS service
785 if (!smbd_open_one_socket(parent,
795 /* Just bind to 0.0.0.0 - accept connections
798 const char *sock_addr = lp_socket_address();
800 const char *sock_ptr;
802 if (strequal(sock_addr, "0.0.0.0") ||
803 strequal(sock_addr, "::")) {
805 sock_addr = "::,0.0.0.0";
807 sock_addr = "0.0.0.0";
811 for (sock_ptr=sock_addr;
812 next_token_talloc(talloc_tos(), &sock_ptr, &sock_tok, " \t,"); ) {
813 for (j = 0; ports && ports[j]; j++) {
814 struct sockaddr_storage ss;
816 unsigned port = atoi(ports[j]);
817 if (port == 0 || port > 0xffff) {
821 /* Keep the first port for mDNS service
828 /* open an incoming socket */
829 if (!interpret_string_addr(&ss, sock_tok,
830 AI_NUMERICHOST|AI_PASSIVE)) {
834 if (!smbd_open_one_socket(parent,
845 if (parent->sockets == NULL) {
846 DEBUG(0,("open_sockets_smbd: No "
847 "sockets available to bind to.\n"));
851 /* Setup the main smbd so that we can get messages. Note that
852 do this after starting listening. This is needed as when in
853 clustered mode, ctdb won't allow us to start doing database
854 operations until it has gone thru a full startup, which
855 includes checking to see that smbd is listening. */
857 if (!serverid_register(messaging_server_id(msg_ctx),
858 FLAG_MSG_GENERAL|FLAG_MSG_SMBD
859 |FLAG_MSG_PRINT_GENERAL
861 DEBUG(0, ("open_sockets_smbd: Failed to register "
862 "myself in serverid.tdb\n"));
866 /* Listen to messages */
868 messaging_register(msg_ctx, NULL, MSG_SHUTDOWN, msg_exit_server);
869 messaging_register(msg_ctx, ev_ctx, MSG_SMB_CONF_UPDATED,
870 smbd_parent_conf_updated);
871 messaging_register(msg_ctx, NULL, MSG_SMB_STAT_CACHE_DELETE,
872 smb_stat_cache_delete);
873 messaging_register(msg_ctx, NULL, MSG_DEBUG, smbd_msg_debug);
874 messaging_register(msg_ctx, ev_ctx, MSG_PRINTER_PCAP,
876 messaging_register(msg_ctx, NULL, MSG_SMB_BRL_VALIDATE,
878 messaging_register(msg_ctx, NULL, MSG_SMB_FORCE_TDIS,
879 smb_parent_force_tdis);
881 messaging_register(msg_ctx, NULL,
882 ID_CACHE_DELETE, smbd_parent_id_cache_delete);
883 messaging_register(msg_ctx, NULL,
884 ID_CACHE_KILL, smbd_parent_id_cache_kill);
886 #ifdef CLUSTER_SUPPORT
887 if (lp_clustering()) {
888 ctdbd_register_reconfigure(messaging_ctdbd_connection());
893 messaging_register(msg_ctx, NULL, MSG_SMB_INJECT_FAULT,
897 if (lp_multicast_dns_register() && (dns_port != 0)) {
898 #ifdef WITH_DNSSD_SUPPORT
899 smbd_setup_mdns_registration(ev_ctx,
902 #ifdef WITH_AVAHI_SUPPORT
905 avahi_conn = avahi_start_register(ev_ctx,
908 if (avahi_conn == NULL) {
909 DEBUG(10, ("avahi_start_register failed\n"));
919 handle stdin becoming readable when we are in --foreground mode
921 static void smbd_stdin_handler(struct tevent_context *ev,
922 struct tevent_fd *fde,
927 if (read(0, &c, 1) != 1) {
928 /* we have reached EOF on stdin, which means the
929 parent has exited. Shutdown the server */
930 exit_server_cleanly("EOF on stdin");
934 static void smbd_parent_loop(struct tevent_context *ev_ctx,
935 struct smbd_parent_context *parent)
937 /* now accept incoming connections - forking a new process
938 for each incoming connection */
939 DEBUG(2,("waiting for connections\n"));
942 TALLOC_CTX *frame = talloc_stackframe();
944 ret = tevent_loop_once(ev_ctx);
946 exit_server_cleanly("tevent_loop_once() error");
952 /* NOTREACHED return True; */
956 /****************************************************************************
957 Initialise connect, service and file structs.
958 ****************************************************************************/
960 static bool init_structs(void )
963 * Set the machine NETBIOS name if not already
964 * set from the config file.
976 static void smbd_parent_sig_term_handler(struct tevent_context *ev,
977 struct tevent_signal *se,
983 exit_server_cleanly("termination signal");
986 static void smbd_parent_sig_hup_handler(struct tevent_context *ev,
987 struct tevent_signal *se,
993 struct smbd_parent_context *parent =
994 talloc_get_type_abort(private_data,
995 struct smbd_parent_context);
997 change_to_root_user();
998 DEBUG(1,("parent: Reloading services after SIGHUP\n"));
999 reload_services(NULL, NULL, false);
1001 printing_subsystem_update(parent->ev_ctx, parent->msg_ctx, true);
1004 /****************************************************************************
1006 ****************************************************************************/
1008 /* Declare prototype for build_options() to avoid having to run it through
1009 mkproto.h. Mixing $(builddir) and $(srcdir) source files in the current
1010 prototype generation system is too complicated. */
1012 extern void build_options(bool screen);
1014 int main(int argc,const char *argv[])
1016 /* shall I run as a daemon */
1017 bool is_daemon = false;
1018 bool interactive = false;
1020 bool no_process_group = false;
1021 bool log_stdout = false;
1023 char *profile_level = NULL;
1026 bool print_build_options = False;
1031 OPT_NO_PROCESS_GROUP,
1034 struct poptOption long_options[] = {
1036 {"daemon", 'D', POPT_ARG_NONE, NULL, OPT_DAEMON, "Become a daemon (default)" },
1037 {"interactive", 'i', POPT_ARG_NONE, NULL, OPT_INTERACTIVE, "Run interactive (not a daemon)"},
1038 {"foreground", 'F', POPT_ARG_NONE, NULL, OPT_FORK, "Run daemon in foreground (for daemontools, etc.)" },
1039 {"no-process-group", '\0', POPT_ARG_NONE, NULL, OPT_NO_PROCESS_GROUP, "Don't create a new process group" },
1040 {"log-stdout", 'S', POPT_ARG_NONE, NULL, OPT_LOG_STDOUT, "Log to stdout" },
1041 {"build-options", 'b', POPT_ARG_NONE, NULL, 'b', "Print build options" },
1042 {"port", 'p', POPT_ARG_STRING, &ports, 0, "Listen on the specified ports"},
1043 {"profiling-level", 'P', POPT_ARG_STRING, &profile_level, 0, "Set profiling level","PROFILE_LEVEL"},
1045 POPT_COMMON_DYNCONFIG
1048 struct smbd_parent_context *parent = NULL;
1051 struct tevent_context *ev_ctx;
1052 struct messaging_context *msg_ctx;
1053 struct server_id server_id;
1054 struct tevent_signal *se;
1055 char *np_dir = NULL;
1058 * Do this before any other talloc operation
1060 talloc_enable_null_tracking();
1061 frame = talloc_stackframe();
1063 setup_logging(argv[0], DEBUG_DEFAULT_STDOUT);
1067 smbd_init_globals();
1071 #ifdef HAVE_SET_AUTH_PARAMETERS
1072 set_auth_parameters(argc,argv);
1075 pc = poptGetContext("smbd", argc, argv, long_options, 0);
1076 while((opt = poptGetNextOpt(pc)) != -1) {
1081 case OPT_INTERACTIVE:
1087 case OPT_NO_PROCESS_GROUP:
1088 no_process_group = true;
1090 case OPT_LOG_STDOUT:
1094 print_build_options = True;
1097 d_fprintf(stderr, "\nInvalid option %s: %s\n\n",
1098 poptBadOption(pc, 0), poptStrerror(opt));
1099 poptPrintUsage(pc, stderr, 0);
1103 poptFreeContext(pc);
1111 setup_logging(argv[0], DEBUG_STDOUT);
1113 setup_logging(argv[0], DEBUG_FILE);
1116 if (print_build_options) {
1117 build_options(True); /* Display output to screen as well as debug */
1122 /* needed for SecureWare on SCO */
1126 set_remote_machine_name("smbd", False);
1128 if (interactive && (DEBUGLEVEL >= 9)) {
1129 talloc_enable_leak_report();
1132 if (log_stdout && Fork) {
1133 DEBUG(0,("ERROR: Can't log to stdout (-S) unless daemon is in foreground (-F) or interactive (-i)\n"));
1137 /* we want to re-seed early to prevent time delays causing
1138 client problems at a later date. (tridge) */
1139 generate_random_buffer(NULL, 0);
1141 /* get initial effective uid and gid */
1144 /* make absolutely sure we run as root - to handle cases where people
1145 are crazy enough to have it setuid */
1146 gain_root_privilege();
1147 gain_root_group_privilege();
1150 dump_core_setup("smbd", lp_logfile(talloc_tos()));
1152 /* we are never interested in SIGPIPE */
1153 BlockSignals(True,SIGPIPE);
1156 /* we are never interested in SIGFPE */
1157 BlockSignals(True,SIGFPE);
1160 #if defined(SIGUSR2)
1161 /* We are no longer interested in USR2 */
1162 BlockSignals(True,SIGUSR2);
1165 /* POSIX demands that signals are inherited. If the invoking process has
1166 * these signals masked, we will have problems, as we won't recieve them. */
1167 BlockSignals(False, SIGHUP);
1168 BlockSignals(False, SIGUSR1);
1169 BlockSignals(False, SIGTERM);
1171 /* Ensure we leave no zombies until we
1172 * correctly set up child handling below. */
1176 /* we want total control over the permissions on created files,
1177 so set our umask to 0 */
1182 DEBUG(0,("smbd version %s started.\n", samba_version_string()));
1183 DEBUGADD(0,("%s\n", COPYRIGHT_STARTUP_MESSAGE));
1185 DEBUG(2,("uid=%d gid=%d euid=%d egid=%d\n",
1186 (int)getuid(),(int)getgid(),(int)geteuid(),(int)getegid()));
1188 /* Output the build options to the debug log */
1189 build_options(False);
1191 if (sizeof(uint16) < 2 || sizeof(uint32) < 4) {
1192 DEBUG(0,("ERROR: Samba is not configured correctly for the word size on your machine\n"));
1196 if (!lp_load_initial_only(get_dyn_CONFIGFILE())) {
1197 DEBUG(0, ("error opening config file '%s'\n", get_dyn_CONFIGFILE()));
1201 /* Init the security context and global current_user */
1205 * Initialize the event context. The event context needs to be
1206 * initialized before the messaging context, cause the messaging
1207 * context holds an event context.
1208 * FIXME: This should be s3_tevent_context_init()
1210 ev_ctx = server_event_context();
1211 if (ev_ctx == NULL) {
1216 * Init the messaging context
1217 * FIXME: This should only call messaging_init()
1219 msg_ctx = server_messaging_context();
1220 if (msg_ctx == NULL) {
1225 * Reloading of the printers will not work here as we don't have a
1226 * server info and rpc services set up. It will be called later.
1228 if (!reload_services(NULL, NULL, false)) {
1232 /* ...NOTE... Log files are working from this point! */
1234 DEBUG(3,("loaded services\n"));
1239 if (!profile_setup(msg_ctx, False)) {
1240 DEBUG(0,("ERROR: failed to setup profiling\n"));
1243 if (profile_level != NULL) {
1244 int pl = atoi(profile_level);
1245 struct server_id src;
1247 DEBUG(1, ("setting profiling level: %s\n",profile_level));
1249 set_profile_level(pl, src);
1253 if (!is_daemon && !is_a_socket(0)) {
1255 DEBUG(0,("standard input is not a socket, assuming -D option\n"));
1258 * Setting is_daemon here prevents us from eventually calling
1259 * the open_sockets_inetd()
1265 if (is_daemon && !interactive) {
1266 DEBUG( 3, ( "Becoming a daemon.\n" ) );
1267 become_daemon(Fork, no_process_group, log_stdout);
1270 set_my_unique_id(serverid_get_random_unique_id());
1274 * If we're interactive we want to set our own process group for
1275 * signal management.
1277 if (interactive && !no_process_group)
1278 setpgid( (pid_t)0, (pid_t)0);
1281 if (!directory_exist(lp_lockdir()))
1282 mkdir(lp_lockdir(), 0755);
1284 if (!directory_exist(lp_piddir()))
1285 mkdir(lp_piddir(), 0755);
1288 pidfile_create("smbd");
1290 status = reinit_after_fork(msg_ctx,
1293 if (!NT_STATUS_IS_OK(status)) {
1294 DEBUG(0,("reinit_after_fork() failed\n"));
1300 * Do not initialize the parent-child-pipe before becoming a
1301 * daemon: this is used to detect a died parent in the child
1304 status = init_before_fork();
1305 if (!NT_STATUS_IS_OK(status)) {
1306 DEBUG(0, ("init_before_fork failed: %s\n", nt_errstr(status)));
1311 parent = talloc_zero(ev_ctx, struct smbd_parent_context);
1313 exit_server("talloc(struct smbd_parent_context) failed");
1315 parent->interactive = interactive;
1316 parent->ev_ctx = ev_ctx;
1317 parent->msg_ctx = msg_ctx;
1320 se = tevent_add_signal(parent->ev_ctx,
1323 smbd_parent_sig_term_handler,
1326 exit_server("failed to setup SIGTERM handler");
1328 se = tevent_add_signal(parent->ev_ctx,
1331 smbd_parent_sig_hup_handler,
1334 exit_server("failed to setup SIGHUP handler");
1337 /* Setup all the TDB's - including CLEAR_IF_FIRST tdb's. */
1339 if (smbd_memcache() == NULL) {
1343 memcache_set_global(smbd_memcache());
1345 /* Initialise the password backed before the global_sam_sid
1346 to ensure that we fetch from ldap before we make a domain sid up */
1348 if(!initialize_password_db(false, ev_ctx))
1351 if (!secrets_init()) {
1352 DEBUG(0, ("ERROR: smbd can not open secrets.tdb\n"));
1356 if (lp_server_role() == ROLE_DOMAIN_BDC || lp_server_role() == ROLE_DOMAIN_PDC) {
1357 struct loadparm_context *lp_ctx = loadparm_init_s3(NULL, loadparm_s3_helpers());
1358 if (!open_schannel_session_store(NULL, lp_ctx)) {
1359 DEBUG(0,("ERROR: Samba cannot open schannel store for secured NETLOGON operations.\n"));
1362 TALLOC_FREE(lp_ctx);
1365 if(!get_global_sam_sid()) {
1366 DEBUG(0,("ERROR: Samba cannot create a SAM SID.\n"));
1370 server_id = messaging_server_id(msg_ctx);
1371 status = smbXsrv_version_global_init(&server_id);
1372 if (!NT_STATUS_IS_OK(status)) {
1376 if (!sessionid_init()) {
1379 status = smbXsrv_session_global_init();
1380 if (!NT_STATUS_IS_OK(status)) {
1384 if (!connections_init(true)) {
1387 status = smbXsrv_tcon_global_init();
1388 if (!NT_STATUS_IS_OK(status)) {
1392 if (!locking_init())
1395 if (!messaging_tdb_parent_init(ev_ctx)) {
1399 if (!smbd_parent_notify_init(NULL, msg_ctx, ev_ctx)) {
1403 if (!serverid_parent_init(ev_ctx)) {
1407 if (!W_ERROR_IS_OK(registry_init_full()))
1410 /* Open the share_info.tdb here, so we don't have to open
1411 after the fork on every single connection. This is a small
1412 performance improvment and reduces the total number of system
1414 if (!share_info_db_init()) {
1415 DEBUG(0,("ERROR: failed to load share info db.\n"));
1419 status = init_system_session_info();
1420 if (!NT_STATUS_IS_OK(status)) {
1421 DEBUG(1, ("ERROR: failed to setup system user info: %s.\n",
1422 nt_errstr(status)));
1426 if (!init_guest_info()) {
1427 DEBUG(0,("ERROR: failed to setup guest info.\n"));
1431 if (!file_init_global()) {
1432 DEBUG(0, ("ERROR: file_init_global() failed\n"));
1435 status = smbXsrv_open_global_init();
1436 if (!NT_STATUS_IS_OK(status)) {
1440 /* This MUST be done before start_epmd() because otherwise
1441 * start_epmd() forks and races against dcesrv_ep_setup() to
1442 * call directory_create_or_exist() */
1443 if (!directory_create_or_exist(lp_ncalrpc_dir(), geteuid(), 0755)) {
1444 DEBUG(0, ("Failed to create pipe directory %s - %s\n",
1445 lp_ncalrpc_dir(), strerror(errno)));
1449 np_dir = talloc_asprintf(talloc_tos(), "%s/np", lp_ncalrpc_dir());
1451 DEBUG(0, ("%s: Out of memory\n", __location__));
1455 if (!directory_create_or_exist(np_dir, geteuid(), 0700)) {
1456 DEBUG(0, ("Failed to create pipe directory %s - %s\n",
1457 np_dir, strerror(errno)));
1461 if (is_daemon && !interactive) {
1462 if (rpc_epmapper_daemon() == RPC_DAEMON_FORK) {
1463 start_epmd(ev_ctx, msg_ctx);
1467 /* only start other daemons if we are running as a daemon
1468 * -- bad things will happen if smbd is launched via inetd
1469 * and we fork a copy of ourselves here */
1470 if (is_daemon && !interactive) {
1472 if (rpc_lsasd_daemon() == RPC_DAEMON_FORK) {
1473 start_lsasd(ev_ctx, msg_ctx);
1476 if (!lp__disable_spoolss() &&
1477 (rpc_spoolss_daemon() != RPC_DAEMON_DISABLED)) {
1478 bool bgq = lp_parm_bool(-1, "smbd", "backgroundqueue", true);
1480 if (!printing_subsystem_init(ev_ctx, msg_ctx, true, bgq)) {
1484 } else if (!lp__disable_spoolss() &&
1485 (rpc_spoolss_daemon() != RPC_DAEMON_DISABLED)) {
1486 if (!printing_subsystem_init(ev_ctx, msg_ctx, false, false)) {
1491 if (!dcesrv_ep_setup(ev_ctx, msg_ctx)) {
1501 /* Started from inetd. fd 0 is the socket. */
1502 /* We will abort gracefully when the client or remote system
1506 /* close stdin, stdout (if not logging to it), but not stderr */
1507 close_low_fds(true, !debug_get_output_is_stdout(), false);
1514 smbd_setup_sig_chld_handler(parent);
1516 smbd_process(ev_ctx, msg_ctx, sock, true);
1518 exit_server_cleanly(NULL);
1522 if (!open_sockets_smbd(parent, ev_ctx, msg_ctx, ports))
1523 exit_server("open_sockets_smbd() failed");
1525 /* do a printer update now that all messaging has been set up,
1526 * before we allow clients to start connecting */
1527 printing_subsystem_update(ev_ctx, msg_ctx, false);
1530 /* make sure we always have a valid stackframe */
1531 frame = talloc_stackframe();
1534 /* if we are running in the foreground then look for
1535 EOF on stdin, and exit if it happens. This allows
1536 us to die if the parent process dies
1538 tevent_add_fd(ev_ctx, parent, 0, TEVENT_FD_READ, smbd_stdin_handler, NULL);
1541 smbd_parent_loop(ev_ctx, parent);
1543 exit_server_cleanly(NULL);