2 Unix SMB/CIFS implementation.
3 Main SMB server routines
4 Copyright (C) Andrew Tridgell 1992-1998
5 Copyright (C) Martin Pool 2002
6 Copyright (C) Jelmer Vernooij 2002-2003
7 Copyright (C) Volker Lendecke 1993-2007
8 Copyright (C) Jeremy Allison 1993-2007
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 3 of the License, or
13 (at your option) any later version.
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License
21 along with this program. If not, see <http://www.gnu.org/licenses/>.
25 #include "system/filesys.h"
26 #include "popt_common.h"
27 #include "smbd/smbd.h"
28 #include "smbd/globals.h"
29 #include "registry/reg_init_full.h"
30 #include "libcli/auth/schannel.h"
33 #include "ctdbd_conn.h"
34 #include "printing/queue_process.h"
35 #include "rpc_server/rpc_service_setup.h"
36 #include "rpc_server/rpc_config.h"
41 #include "smbprofile.h"
42 #include "lib/id_cache.h"
43 #include "lib/param/param.h"
44 #include "lib/background.h"
45 #include "lib/conn_tdb.h"
46 #include "../lib/util/pidfile.h"
47 #include "lib/smbd_shim.h"
48 #include "scavenger.h"
50 struct smbd_open_socket;
51 struct smbd_child_pid;
53 struct smbd_parent_context {
56 struct tevent_context *ev_ctx;
57 struct messaging_context *msg_ctx;
59 /* the list of listening sockets */
60 struct smbd_open_socket *sockets;
62 /* the list of current child processes */
63 struct smbd_child_pid *children;
66 struct tevent_timer *cleanup_te;
69 struct smbd_open_socket {
70 struct smbd_open_socket *prev, *next;
71 struct smbd_parent_context *parent;
73 struct tevent_fd *fde;
76 struct smbd_child_pid {
77 struct smbd_child_pid *prev, *next;
81 extern void start_epmd(struct tevent_context *ev_ctx,
82 struct messaging_context *msg_ctx);
84 extern void start_lsasd(struct tevent_context *ev_ctx,
85 struct messaging_context *msg_ctx);
88 extern int dcelogin_atmost_once;
91 /*******************************************************************
92 What to do when smb.conf is updated.
93 ********************************************************************/
95 static void smbd_parent_conf_updated(struct messaging_context *msg,
98 struct server_id server_id,
101 struct tevent_context *ev_ctx =
102 talloc_get_type_abort(private_data, struct tevent_context);
104 DEBUG(10,("smbd_parent_conf_updated: Got message saying smb.conf was "
105 "updated. Reloading.\n"));
106 change_to_root_user();
107 reload_services(NULL, NULL, false);
108 printing_subsystem_update(ev_ctx, msg, false);
111 /*******************************************************************
112 What to do when printcap is updated.
113 ********************************************************************/
115 static void smb_pcap_updated(struct messaging_context *msg,
118 struct server_id server_id,
121 struct tevent_context *ev_ctx =
122 talloc_get_type_abort(private_data, struct tevent_context);
124 DEBUG(10,("Got message saying pcap was updated. Reloading.\n"));
125 change_to_root_user();
126 delete_and_reload_printers(ev_ctx, msg);
129 /*******************************************************************
130 Delete a statcache entry.
131 ********************************************************************/
133 static void smb_stat_cache_delete(struct messaging_context *msg,
136 struct server_id server_id,
139 const char *name = (const char *)data->data;
140 DEBUG(10,("smb_stat_cache_delete: delete name %s\n", name));
141 stat_cache_delete(name);
144 /****************************************************************************
145 Send a SIGTERM to our process group.
146 *****************************************************************************/
148 static void killkids(void)
150 if(am_parent) kill(0,SIGTERM);
153 static void msg_exit_server(struct messaging_context *msg,
156 struct server_id server_id,
159 DEBUG(3, ("got a SHUTDOWN message\n"));
160 exit_server_cleanly(NULL);
164 static void msg_inject_fault(struct messaging_context *msg,
167 struct server_id src,
172 if (data->length != sizeof(sig)) {
173 DEBUG(0, ("Process %s sent bogus signal injection request\n",
174 procid_str_static(&src)));
178 sig = *(int *)data->data;
180 exit_server("internal error injected");
185 DEBUG(0, ("Process %s requested injection of signal %d (%s)\n",
186 procid_str_static(&src), sig, strsignal(sig)));
188 DEBUG(0, ("Process %s requested injection of signal %d\n",
189 procid_str_static(&src), sig));
194 #endif /* DEVELOPER */
196 NTSTATUS messaging_send_to_children(struct messaging_context *msg_ctx,
197 uint32_t msg_type, DATA_BLOB* data)
200 struct smbd_parent_context *parent = am_parent;
201 struct smbd_child_pid *child;
203 if (parent == NULL) {
204 return NT_STATUS_INTERNAL_ERROR;
207 for (child = parent->children; child != NULL; child = child->next) {
208 status = messaging_send(parent->msg_ctx,
209 pid_to_procid(child->pid),
211 if (!NT_STATUS_IS_OK(status)) {
219 * Parent smbd process sets its own debug level first and then
220 * sends a message to all the smbd children to adjust their debug
221 * level to that of the parent.
224 static void smbd_msg_debug(struct messaging_context *msg_ctx,
227 struct server_id server_id,
230 debug_message(msg_ctx, private_data, MSG_DEBUG, server_id, data);
232 messaging_send_to_children(msg_ctx, MSG_DEBUG, data);
235 static void smbd_parent_id_cache_kill(struct messaging_context *msg_ctx,
238 struct server_id server_id,
241 const char *msg = (data && data->data)
242 ? (const char *)data->data : "<NULL>";
243 struct id_cache_ref id;
245 if (!id_cache_ref_parse(msg, &id)) {
246 DEBUG(0, ("Invalid ?ID: %s\n", msg));
250 id_cache_delete_from_cache(&id);
252 messaging_send_to_children(msg_ctx, msg_type, data);
255 static void smbd_parent_id_cache_delete(struct messaging_context *ctx,
258 struct server_id srv_id,
261 id_cache_delete_message(ctx, data, msg_type, srv_id, msg_data);
263 messaging_send_to_children(ctx, msg_type, msg_data);
266 struct smbd_parent_notify_state {
267 struct tevent_context *ev;
268 struct messaging_context *msg;
270 struct notify_context *notify;
273 static int smbd_parent_notify_cleanup(void *private_data);
274 static void smbd_parent_notify_cleanup_done(struct tevent_req *req);
275 static void smbd_parent_notify_proxy_done(struct tevent_req *req);
277 static bool smbd_parent_notify_init(TALLOC_CTX *mem_ctx,
278 struct messaging_context *msg,
279 struct tevent_context *ev)
281 struct smbd_parent_notify_state *state;
282 struct tevent_req *req;
284 state = talloc(mem_ctx, struct smbd_parent_notify_state);
290 state->msgtype = MSG_SMB_NOTIFY_CLEANUP;
292 state->notify = notify_init(state, msg, ev);
293 if (state->notify == NULL) {
296 req = background_job_send(
297 state, state->ev, state->msg, &state->msgtype, 1,
298 lp_parm_int(-1, "smbd", "notify cleanup interval", 60),
299 smbd_parent_notify_cleanup, state->notify);
303 tevent_req_set_callback(req, smbd_parent_notify_cleanup_done, state);
305 if (!lp_clustering()) {
309 req = notify_cluster_proxy_send(state, ev, state->notify);
313 tevent_req_set_callback(req, smbd_parent_notify_proxy_done, state);
321 static int smbd_parent_notify_cleanup(void *private_data)
323 struct notify_context *notify = talloc_get_type_abort(
324 private_data, struct notify_context);
325 notify_cleanup(notify);
326 return lp_parm_int(-1, "smbd", "notify cleanup interval", 60);
329 static void smbd_parent_notify_cleanup_done(struct tevent_req *req)
331 struct smbd_parent_notify_state *state = tevent_req_callback_data(
332 req, struct smbd_parent_notify_state);
335 status = background_job_recv(req);
337 DEBUG(1, ("notify cleanup job ended with %s\n", nt_errstr(status)));
340 * Provide self-healing: Whatever the error condition was, it
341 * will have printed it into log.smbd. Just retrying and
342 * spamming log.smbd once a minute should be fine.
344 req = background_job_send(
345 state, state->ev, state->msg, &state->msgtype, 1, 60,
346 smbd_parent_notify_cleanup, state->notify);
348 DEBUG(1, ("background_job_send failed\n"));
351 tevent_req_set_callback(req, smbd_parent_notify_cleanup_done, state);
354 static void smbd_parent_notify_proxy_done(struct tevent_req *req)
358 ret = notify_cluster_proxy_recv(req);
360 DEBUG(1, ("notify proxy job ended with %s\n", strerror(ret)));
363 static void smb_parent_force_tdis(struct messaging_context *ctx,
366 struct server_id srv_id,
369 messaging_send_to_children(ctx, msg_type, msg_data);
372 static void add_child_pid(struct smbd_parent_context *parent,
375 struct smbd_child_pid *child;
377 child = talloc_zero(parent, struct smbd_child_pid);
379 DEBUG(0, ("Could not add child struct -- malloc failed\n"));
383 DLIST_ADD(parent->children, child);
384 parent->num_children += 1;
388 at most every smbd:cleanuptime seconds (default 20), we scan the BRL
389 and locking database for entries to cleanup. As a side effect this
390 also cleans up dead entries in the connections database (due to the
391 traversal in message_send_all()
393 Using a timer for this prevents a flood of traversals when a large
394 number of clients disconnect at the same time (perhaps due to a
398 static void cleanup_timeout_fn(struct tevent_context *event_ctx,
399 struct tevent_timer *te,
403 struct smbd_parent_context *parent =
404 talloc_get_type_abort(private_data,
405 struct smbd_parent_context);
407 parent->cleanup_te = NULL;
409 DEBUG(1,("Cleaning up brl and lock database after unclean shutdown\n"));
410 message_send_all(parent->msg_ctx, MSG_SMB_UNLOCK, NULL, 0, NULL);
411 messaging_send_buf(parent->msg_ctx,
412 messaging_server_id(parent->msg_ctx),
413 MSG_SMB_BRL_VALIDATE, NULL, 0);
416 static void remove_child_pid(struct smbd_parent_context *parent,
418 bool unclean_shutdown)
420 struct smbd_child_pid *child;
421 struct server_id child_id;
423 child_id = pid_to_procid(pid);
425 for (child = parent->children; child != NULL; child = child->next) {
426 if (child->pid == pid) {
427 struct smbd_child_pid *tmp = child;
428 DLIST_REMOVE(parent->children, child);
430 parent->num_children -= 1;
436 /* not all forked child processes are added to the children list */
437 DEBUG(2, ("Could not find child %d -- ignoring\n", (int)pid));
441 if (unclean_shutdown) {
442 /* a child terminated uncleanly so tickle all
443 processes to see if they can grab any of the
446 DEBUG(3,(__location__ " Unclean shutdown of pid %u\n",
448 if (parent->cleanup_te == NULL) {
449 /* call the cleanup timer, but not too often */
450 int cleanup_time = lp_parm_int(-1, "smbd", "cleanuptime", 20);
451 parent->cleanup_te = tevent_add_timer(parent->ev_ctx,
453 timeval_current_ofs(cleanup_time, 0),
456 DEBUG(1,("Scheduled cleanup of brl and lock database after unclean shutdown\n"));
460 if (!serverid_deregister(child_id)) {
461 DEBUG(1, ("Could not remove pid %d from serverid.tdb\n",
466 /****************************************************************************
467 Have we reached the process limit ?
468 ****************************************************************************/
470 static bool allowable_number_of_smbd_processes(struct smbd_parent_context *parent)
472 int max_processes = lp_max_smbd_processes();
477 return parent->num_children < max_processes;
480 static void smbd_sig_chld_handler(struct tevent_context *ev,
481 struct tevent_signal *se,
489 struct smbd_parent_context *parent =
490 talloc_get_type_abort(private_data,
491 struct smbd_parent_context);
493 while ((pid = sys_waitpid(-1, &status, WNOHANG)) > 0) {
494 bool unclean_shutdown = False;
496 /* If the child terminated normally, assume
497 it was an unclean shutdown unless the
500 if (WIFEXITED(status)) {
501 unclean_shutdown = WEXITSTATUS(status);
503 /* If the child terminated due to a signal
504 we always assume it was unclean.
506 if (WIFSIGNALED(status)) {
507 unclean_shutdown = True;
509 remove_child_pid(parent, pid, unclean_shutdown);
513 static void smbd_setup_sig_chld_handler(struct smbd_parent_context *parent)
515 struct tevent_signal *se;
517 se = tevent_add_signal(parent->ev_ctx,
518 parent, /* mem_ctx */
520 smbd_sig_chld_handler,
523 exit_server("failed to setup SIGCHLD handler");
527 static void smbd_open_socket_close_fn(struct tevent_context *ev,
528 struct tevent_fd *fde,
532 /* this might be the socket_wrapper swrap_close() */
536 static void smbd_accept_connection(struct tevent_context *ev,
537 struct tevent_fd *fde,
541 struct smbd_open_socket *s = talloc_get_type_abort(private_data,
542 struct smbd_open_socket);
543 struct messaging_context *msg_ctx = s->parent->msg_ctx;
544 struct sockaddr_storage addr;
545 socklen_t in_addrlen = sizeof(addr);
550 fd = accept(s->fd, (struct sockaddr *)(void *)&addr,&in_addrlen);
551 if (fd == -1 && errno == EINTR)
555 DEBUG(0,("accept: %s\n",
560 if (s->parent->interactive) {
561 reinit_after_fork(msg_ctx, ev, true);
562 smbd_process(ev, msg_ctx, fd, true);
563 exit_server_cleanly("end of interactive mode");
567 if (!allowable_number_of_smbd_processes(s->parent)) {
573 * Generate a unique id in the parent process so that we use
574 * the global random state in the parent.
576 unique_id = serverid_get_random_unique_id();
580 NTSTATUS status = NT_STATUS_OK;
586 * Can't use TALLOC_FREE here. Nulling out the argument to it
587 * would overwrite memory we've just freed.
589 talloc_free(s->parent);
592 set_my_unique_id(unique_id);
594 /* Stop zombies, the parent explicitly handles
595 * them, counting worker smbds. */
598 status = reinit_after_fork(msg_ctx,
601 if (!NT_STATUS_IS_OK(status)) {
602 if (NT_STATUS_EQUAL(status,
603 NT_STATUS_TOO_MANY_OPENED_FILES)) {
604 DEBUG(0,("child process cannot initialize "
605 "because too many files are open\n"));
608 if (lp_clustering() &&
609 NT_STATUS_EQUAL(status,
610 NT_STATUS_INTERNAL_DB_ERROR)) {
611 DEBUG(1,("child process cannot initialize "
612 "because connection to CTDB "
617 DEBUG(0,("reinit_after_fork() failed\n"));
618 smb_panic("reinit_after_fork() failed");
621 smbd_process(ev, msg_ctx, fd, false);
623 exit_server_cleanly("end of child");
628 DEBUG(0,("smbd_accept_connection: fork() failed: %s\n",
632 /* The parent doesn't need this socket */
635 /* Sun May 6 18:56:14 2001 ackley@cs.unm.edu:
636 Clear the closed fd info out of server_fd --
637 and more importantly, out of client_fd in
638 util_sock.c, to avoid a possible
639 getpeername failure if we reopen the logs
640 and use %I in the filename.
644 add_child_pid(s->parent, pid);
647 /* Force parent to check log size after
648 * spawning child. Fix from
649 * klausr@ITAP.Physik.Uni-Stuttgart.De. The
650 * parent smbd will log to logserver.smb. It
651 * writes only two messages for each child
652 * started/finished. But each child writes,
653 * say, 50 messages also in logserver.smb,
654 * begining with the debug_count of the
655 * parent, before the child opens its own log
656 * file logserver.client. In a worst case
657 * scenario the size of logserver.smb would be
658 * checked after about 50*50=2500 messages
661 force_check_log_size();
664 static bool smbd_open_one_socket(struct smbd_parent_context *parent,
665 struct tevent_context *ev_ctx,
666 const struct sockaddr_storage *ifss,
669 struct smbd_open_socket *s;
671 s = talloc(parent, struct smbd_open_socket);
677 s->fd = open_socket_in(SOCK_STREAM,
679 parent->sockets == NULL ? 0 : 2,
683 DEBUG(0,("smbd_open_once_socket: open_socket_in: "
684 "%s\n", strerror(errno)));
687 * We ignore an error here, as we've done before
692 /* ready to listen */
693 set_socket_options(s->fd, "SO_KEEPALIVE");
694 set_socket_options(s->fd, lp_socket_options());
696 /* Set server socket to
697 * non-blocking for the accept. */
698 set_blocking(s->fd, False);
700 if (listen(s->fd, SMBD_LISTEN_BACKLOG) == -1) {
701 DEBUG(0,("open_sockets_smbd: listen: "
702 "%s\n", strerror(errno)));
708 s->fde = tevent_add_fd(ev_ctx,
710 s->fd, TEVENT_FD_READ,
711 smbd_accept_connection,
714 DEBUG(0,("open_sockets_smbd: "
715 "tevent_add_fd: %s\n",
721 tevent_fd_set_close_fn(s->fde, smbd_open_socket_close_fn);
723 DLIST_ADD_END(parent->sockets, s, struct smbd_open_socket *);
728 /****************************************************************************
729 Open the socket communication.
730 ****************************************************************************/
732 static bool open_sockets_smbd(struct smbd_parent_context *parent,
733 struct tevent_context *ev_ctx,
734 struct messaging_context *msg_ctx,
735 const char *smb_ports)
737 int num_interfaces = iface_count();
740 unsigned dns_port = 0;
747 smbd_setup_sig_chld_handler(parent);
749 ports = lp_smb_ports();
751 /* use a reasonable default set of ports - listing on 445 and 139 */
753 ports = (const char **)str_list_make_v3(talloc_tos(), smb_ports, NULL);
756 for (j = 0; ports && ports[j]; j++) {
757 unsigned port = atoi(ports[j]);
759 if (port == 0 || port > 0xffff) {
760 exit_server_cleanly("Invalid port in the config or on "
761 "the commandline specified!");
765 if (lp_interfaces() && lp_bind_interfaces_only()) {
766 /* We have been given an interfaces line, and been
767 told to only bind to those interfaces. Create a
768 socket per interface and bind to only these.
771 /* Now open a listen socket for each of the
773 for(i = 0; i < num_interfaces; i++) {
774 const struct sockaddr_storage *ifss =
775 iface_n_sockaddr_storage(i);
777 DEBUG(0,("open_sockets_smbd: "
778 "interface %d has NULL IP address !\n",
783 for (j = 0; ports && ports[j]; j++) {
784 unsigned port = atoi(ports[j]);
786 /* Keep the first port for mDNS service
793 if (!smbd_open_one_socket(parent,
802 /* Just bind to 0.0.0.0 - accept connections
805 const char *sock_addr;
807 const char *sock_ptr;
810 sock_addr = "::,0.0.0.0";
812 sock_addr = "0.0.0.0";
815 for (sock_ptr=sock_addr;
816 next_token_talloc(talloc_tos(), &sock_ptr, &sock_tok, " \t,"); ) {
817 for (j = 0; ports && ports[j]; j++) {
818 struct sockaddr_storage ss;
819 unsigned port = atoi(ports[j]);
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,
844 if (parent->sockets == NULL) {
845 DEBUG(0,("open_sockets_smbd: No "
846 "sockets available to bind to.\n"));
850 /* Setup the main smbd so that we can get messages. Note that
851 do this after starting listening. This is needed as when in
852 clustered mode, ctdb won't allow us to start doing database
853 operations until it has gone thru a full startup, which
854 includes checking to see that smbd is listening. */
856 if (!serverid_register(messaging_server_id(msg_ctx),
857 FLAG_MSG_GENERAL|FLAG_MSG_SMBD
858 |FLAG_MSG_PRINT_GENERAL
860 DEBUG(0, ("open_sockets_smbd: Failed to register "
861 "myself in serverid.tdb\n"));
865 /* Listen to messages */
867 messaging_register(msg_ctx, NULL, MSG_SHUTDOWN, msg_exit_server);
868 messaging_register(msg_ctx, ev_ctx, MSG_SMB_CONF_UPDATED,
869 smbd_parent_conf_updated);
870 messaging_register(msg_ctx, NULL, MSG_SMB_STAT_CACHE_DELETE,
871 smb_stat_cache_delete);
872 messaging_register(msg_ctx, NULL, MSG_DEBUG, smbd_msg_debug);
873 messaging_register(msg_ctx, ev_ctx, MSG_PRINTER_PCAP,
875 messaging_register(msg_ctx, NULL, MSG_SMB_BRL_VALIDATE,
877 messaging_register(msg_ctx, NULL, MSG_SMB_FORCE_TDIS,
878 smb_parent_force_tdis);
880 messaging_register(msg_ctx, NULL,
881 ID_CACHE_DELETE, smbd_parent_id_cache_delete);
882 messaging_register(msg_ctx, NULL,
883 ID_CACHE_KILL, smbd_parent_id_cache_kill);
885 #ifdef CLUSTER_SUPPORT
886 if (lp_clustering()) {
887 ctdbd_register_reconfigure(messaging_ctdbd_connection());
892 messaging_register(msg_ctx, NULL, MSG_SMB_INJECT_FAULT,
896 if (lp_multicast_dns_register() && (dns_port != 0)) {
897 #ifdef WITH_DNSSD_SUPPORT
898 smbd_setup_mdns_registration(ev_ctx,
901 #ifdef WITH_AVAHI_SUPPORT
904 avahi_conn = avahi_start_register(ev_ctx,
907 if (avahi_conn == NULL) {
908 DEBUG(10, ("avahi_start_register failed\n"));
918 handle stdin becoming readable when we are in --foreground mode
920 static void smbd_stdin_handler(struct tevent_context *ev,
921 struct tevent_fd *fde,
926 if (read(0, &c, 1) != 1) {
927 /* we have reached EOF on stdin, which means the
928 parent has exited. Shutdown the server */
929 exit_server_cleanly("EOF on stdin");
933 static void smbd_parent_loop(struct tevent_context *ev_ctx,
934 struct smbd_parent_context *parent)
936 /* now accept incoming connections - forking a new process
937 for each incoming connection */
938 DEBUG(2,("waiting for connections\n"));
941 TALLOC_CTX *frame = talloc_stackframe();
943 ret = tevent_loop_once(ev_ctx);
945 exit_server_cleanly("tevent_loop_once() error");
951 /* NOTREACHED return True; */
955 /****************************************************************************
956 Initialise connect, service and file structs.
957 ****************************************************************************/
959 static bool init_structs(void )
962 * Set the machine NETBIOS name if not already
963 * set from the config file.
975 static void smbd_parent_sig_term_handler(struct tevent_context *ev,
976 struct tevent_signal *se,
982 exit_server_cleanly("termination signal");
985 static void smbd_parent_sig_hup_handler(struct tevent_context *ev,
986 struct tevent_signal *se,
992 struct smbd_parent_context *parent =
993 talloc_get_type_abort(private_data,
994 struct smbd_parent_context);
996 change_to_root_user();
997 DEBUG(1,("parent: Reloading services after SIGHUP\n"));
998 reload_services(NULL, NULL, false);
1000 printing_subsystem_update(parent->ev_ctx, parent->msg_ctx, true);
1003 /****************************************************************************
1005 ****************************************************************************/
1007 /* Declare prototype for build_options() to avoid having to run it through
1008 mkproto.h. Mixing $(builddir) and $(srcdir) source files in the current
1009 prototype generation system is too complicated. */
1011 extern void build_options(bool screen);
1013 int main(int argc,const char *argv[])
1015 /* shall I run as a daemon */
1016 bool is_daemon = false;
1017 bool interactive = false;
1019 bool no_process_group = false;
1020 bool log_stdout = false;
1022 char *profile_level = NULL;
1025 bool print_build_options = False;
1030 OPT_NO_PROCESS_GROUP,
1033 struct poptOption long_options[] = {
1035 {"daemon", 'D', POPT_ARG_NONE, NULL, OPT_DAEMON, "Become a daemon (default)" },
1036 {"interactive", 'i', POPT_ARG_NONE, NULL, OPT_INTERACTIVE, "Run interactive (not a daemon)"},
1037 {"foreground", 'F', POPT_ARG_NONE, NULL, OPT_FORK, "Run daemon in foreground (for daemontools, etc.)" },
1038 {"no-process-group", '\0', POPT_ARG_NONE, NULL, OPT_NO_PROCESS_GROUP, "Don't create a new process group" },
1039 {"log-stdout", 'S', POPT_ARG_NONE, NULL, OPT_LOG_STDOUT, "Log to stdout" },
1040 {"build-options", 'b', POPT_ARG_NONE, NULL, 'b', "Print build options" },
1041 {"port", 'p', POPT_ARG_STRING, &ports, 0, "Listen on the specified ports"},
1042 {"profiling-level", 'P', POPT_ARG_STRING, &profile_level, 0, "Set profiling level","PROFILE_LEVEL"},
1044 POPT_COMMON_DYNCONFIG
1047 struct smbd_parent_context *parent = NULL;
1050 struct tevent_context *ev_ctx;
1051 struct messaging_context *msg_ctx;
1052 struct server_id server_id;
1053 struct tevent_signal *se;
1054 char *np_dir = NULL;
1055 static const struct smbd_shim smbd_shim_fns =
1057 .cancel_pending_lock_requests_by_fid = smbd_cancel_pending_lock_requests_by_fid,
1058 .send_stat_cache_delete_message = smbd_send_stat_cache_delete_message,
1059 .change_to_root_user = smbd_change_to_root_user,
1061 .contend_level2_oplocks_begin = smbd_contend_level2_oplocks_begin,
1062 .contend_level2_oplocks_end = smbd_contend_level2_oplocks_end,
1064 .become_root = smbd_become_root,
1065 .unbecome_root = smbd_unbecome_root,
1067 .exit_server = smbd_exit_server,
1068 .exit_server_cleanly = smbd_exit_server_cleanly,
1072 * Do this before any other talloc operation
1074 talloc_enable_null_tracking();
1075 frame = talloc_stackframe();
1077 setup_logging(argv[0], DEBUG_DEFAULT_STDOUT);
1081 set_smbd_shim(&smbd_shim_fns);
1083 smbd_init_globals();
1087 #ifdef HAVE_SET_AUTH_PARAMETERS
1088 set_auth_parameters(argc,argv);
1091 pc = poptGetContext("smbd", argc, argv, long_options, 0);
1092 while((opt = poptGetNextOpt(pc)) != -1) {
1097 case OPT_INTERACTIVE:
1103 case OPT_NO_PROCESS_GROUP:
1104 no_process_group = true;
1106 case OPT_LOG_STDOUT:
1110 print_build_options = True;
1113 d_fprintf(stderr, "\nInvalid option %s: %s\n\n",
1114 poptBadOption(pc, 0), poptStrerror(opt));
1115 poptPrintUsage(pc, stderr, 0);
1119 poptFreeContext(pc);
1127 setup_logging(argv[0], DEBUG_STDOUT);
1129 setup_logging(argv[0], DEBUG_FILE);
1132 if (print_build_options) {
1133 build_options(True); /* Display output to screen as well as debug */
1138 /* needed for SecureWare on SCO */
1142 set_remote_machine_name("smbd", False);
1144 if (interactive && (DEBUGLEVEL >= 9)) {
1145 talloc_enable_leak_report();
1148 if (log_stdout && Fork) {
1149 DEBUG(0,("ERROR: Can't log to stdout (-S) unless daemon is in foreground (-F) or interactive (-i)\n"));
1153 /* we want to re-seed early to prevent time delays causing
1154 client problems at a later date. (tridge) */
1155 generate_random_buffer(NULL, 0);
1157 /* get initial effective uid and gid */
1160 /* make absolutely sure we run as root - to handle cases where people
1161 are crazy enough to have it setuid */
1162 gain_root_privilege();
1163 gain_root_group_privilege();
1166 dump_core_setup("smbd", lp_logfile(talloc_tos()));
1168 /* we are never interested in SIGPIPE */
1169 BlockSignals(True,SIGPIPE);
1172 /* we are never interested in SIGFPE */
1173 BlockSignals(True,SIGFPE);
1176 #if defined(SIGUSR2)
1177 /* We are no longer interested in USR2 */
1178 BlockSignals(True,SIGUSR2);
1181 /* POSIX demands that signals are inherited. If the invoking process has
1182 * these signals masked, we will have problems, as we won't recieve them. */
1183 BlockSignals(False, SIGHUP);
1184 BlockSignals(False, SIGUSR1);
1185 BlockSignals(False, SIGTERM);
1187 /* Ensure we leave no zombies until we
1188 * correctly set up child handling below. */
1192 /* we want total control over the permissions on created files,
1193 so set our umask to 0 */
1198 DEBUG(0,("smbd version %s started.\n", samba_version_string()));
1199 DEBUGADD(0,("%s\n", COPYRIGHT_STARTUP_MESSAGE));
1201 DEBUG(2,("uid=%d gid=%d euid=%d egid=%d\n",
1202 (int)getuid(),(int)getgid(),(int)geteuid(),(int)getegid()));
1204 /* Output the build options to the debug log */
1205 build_options(False);
1207 if (sizeof(uint16) < 2 || sizeof(uint32) < 4) {
1208 DEBUG(0,("ERROR: Samba is not configured correctly for the word size on your machine\n"));
1212 if (!lp_load_initial_only(get_dyn_CONFIGFILE())) {
1213 DEBUG(0, ("error opening config file '%s'\n", get_dyn_CONFIGFILE()));
1217 /* Init the security context and global current_user */
1221 * Initialize the event context. The event context needs to be
1222 * initialized before the messaging context, cause the messaging
1223 * context holds an event context.
1224 * FIXME: This should be s3_tevent_context_init()
1226 ev_ctx = server_event_context();
1227 if (ev_ctx == NULL) {
1232 * Init the messaging context
1233 * FIXME: This should only call messaging_init()
1235 msg_ctx = server_messaging_context();
1236 if (msg_ctx == NULL) {
1241 * Reloading of the printers will not work here as we don't have a
1242 * server info and rpc services set up. It will be called later.
1244 if (!reload_services(NULL, NULL, false)) {
1248 if (lp_server_role() == ROLE_ACTIVE_DIRECTORY_DC
1249 && !lp_parm_bool(-1, "server role check", "inhibit", false)) {
1250 DEBUG(0, ("server role = 'active directory domain controller' not compatible with running smbd standalone. \n"));
1251 DEBUGADD(0, ("You should start 'samba' instead, and it will control starting smbd if required\n"));
1255 /* ...NOTE... Log files are working from this point! */
1257 DEBUG(3,("loaded services\n"));
1262 if (!profile_setup(msg_ctx, False)) {
1263 DEBUG(0,("ERROR: failed to setup profiling\n"));
1266 if (profile_level != NULL) {
1267 int pl = atoi(profile_level);
1268 struct server_id src;
1270 DEBUG(1, ("setting profiling level: %s\n",profile_level));
1272 set_profile_level(pl, src);
1276 if (!is_daemon && !is_a_socket(0)) {
1278 DEBUG(0,("standard input is not a socket, assuming -D option\n"));
1281 * Setting is_daemon here prevents us from eventually calling
1282 * the open_sockets_inetd()
1288 if (is_daemon && !interactive) {
1289 DEBUG( 3, ( "Becoming a daemon.\n" ) );
1290 become_daemon(Fork, no_process_group, log_stdout);
1293 set_my_unique_id(serverid_get_random_unique_id());
1297 * If we're interactive we want to set our own process group for
1298 * signal management.
1300 if (interactive && !no_process_group)
1301 setpgid( (pid_t)0, (pid_t)0);
1304 if (!directory_exist(lp_lockdir()))
1305 mkdir(lp_lockdir(), 0755);
1307 if (!directory_exist(lp_piddir()))
1308 mkdir(lp_piddir(), 0755);
1311 pidfile_create(lp_piddir(), "smbd");
1313 status = reinit_after_fork(msg_ctx,
1316 if (!NT_STATUS_IS_OK(status)) {
1317 DEBUG(0,("reinit_after_fork() failed\n"));
1323 * Do not initialize the parent-child-pipe before becoming a
1324 * daemon: this is used to detect a died parent in the child
1327 status = init_before_fork();
1328 if (!NT_STATUS_IS_OK(status)) {
1329 DEBUG(0, ("init_before_fork failed: %s\n", nt_errstr(status)));
1334 parent = talloc_zero(ev_ctx, struct smbd_parent_context);
1336 exit_server("talloc(struct smbd_parent_context) failed");
1338 parent->interactive = interactive;
1339 parent->ev_ctx = ev_ctx;
1340 parent->msg_ctx = msg_ctx;
1343 se = tevent_add_signal(parent->ev_ctx,
1346 smbd_parent_sig_term_handler,
1349 exit_server("failed to setup SIGTERM handler");
1351 se = tevent_add_signal(parent->ev_ctx,
1354 smbd_parent_sig_hup_handler,
1357 exit_server("failed to setup SIGHUP handler");
1360 /* Setup all the TDB's - including CLEAR_IF_FIRST tdb's. */
1362 if (smbd_memcache() == NULL) {
1366 memcache_set_global(smbd_memcache());
1368 /* Initialise the password backed before the global_sam_sid
1369 to ensure that we fetch from ldap before we make a domain sid up */
1371 if(!initialize_password_db(false, ev_ctx))
1374 if (!secrets_init()) {
1375 DEBUG(0, ("ERROR: smbd can not open secrets.tdb\n"));
1379 if (lp_server_role() == ROLE_DOMAIN_BDC || lp_server_role() == ROLE_DOMAIN_PDC) {
1380 struct loadparm_context *lp_ctx = loadparm_init_s3(NULL, loadparm_s3_helpers());
1381 if (!open_schannel_session_store(NULL, lp_ctx)) {
1382 DEBUG(0,("ERROR: Samba cannot open schannel store for secured NETLOGON operations.\n"));
1385 TALLOC_FREE(lp_ctx);
1388 if(!get_global_sam_sid()) {
1389 DEBUG(0,("ERROR: Samba cannot create a SAM SID.\n"));
1393 server_id = messaging_server_id(msg_ctx);
1394 status = smbXsrv_version_global_init(&server_id);
1395 if (!NT_STATUS_IS_OK(status)) {
1399 status = smbXsrv_session_global_init();
1400 if (!NT_STATUS_IS_OK(status)) {
1404 status = smbXsrv_tcon_global_init();
1405 if (!NT_STATUS_IS_OK(status)) {
1409 if (!locking_init())
1412 if (!messaging_tdb_parent_init(ev_ctx)) {
1416 if (!smbd_parent_notify_init(NULL, msg_ctx, ev_ctx)) {
1420 if (!smbd_scavenger_init(NULL, msg_ctx, ev_ctx)) {
1424 if (!serverid_parent_init(ev_ctx)) {
1428 if (!W_ERROR_IS_OK(registry_init_full()))
1431 /* Open the share_info.tdb here, so we don't have to open
1432 after the fork on every single connection. This is a small
1433 performance improvment and reduces the total number of system
1435 if (!share_info_db_init()) {
1436 DEBUG(0,("ERROR: failed to load share info db.\n"));
1440 status = init_system_session_info();
1441 if (!NT_STATUS_IS_OK(status)) {
1442 DEBUG(1, ("ERROR: failed to setup system user info: %s.\n",
1443 nt_errstr(status)));
1447 if (!init_guest_info()) {
1448 DEBUG(0,("ERROR: failed to setup guest info.\n"));
1452 if (!file_init_global()) {
1453 DEBUG(0, ("ERROR: file_init_global() failed\n"));
1456 status = smbXsrv_open_global_init();
1457 if (!NT_STATUS_IS_OK(status)) {
1461 /* This MUST be done before start_epmd() because otherwise
1462 * start_epmd() forks and races against dcesrv_ep_setup() to
1463 * call directory_create_or_exist() */
1464 if (!directory_create_or_exist(lp_ncalrpc_dir(), geteuid(), 0755)) {
1465 DEBUG(0, ("Failed to create pipe directory %s - %s\n",
1466 lp_ncalrpc_dir(), strerror(errno)));
1470 np_dir = talloc_asprintf(talloc_tos(), "%s/np", lp_ncalrpc_dir());
1472 DEBUG(0, ("%s: Out of memory\n", __location__));
1476 if (!directory_create_or_exist_strict(np_dir, geteuid(), 0700)) {
1477 DEBUG(0, ("Failed to create pipe directory %s - %s\n",
1478 np_dir, strerror(errno)));
1482 if (is_daemon && !interactive) {
1483 if (rpc_epmapper_daemon() == RPC_DAEMON_FORK) {
1484 start_epmd(ev_ctx, msg_ctx);
1488 if (!dcesrv_ep_setup(ev_ctx, msg_ctx)) {
1492 /* only start other daemons if we are running as a daemon
1493 * -- bad things will happen if smbd is launched via inetd
1494 * and we fork a copy of ourselves here */
1495 if (is_daemon && !interactive) {
1497 if (rpc_lsasd_daemon() == RPC_DAEMON_FORK) {
1498 start_lsasd(ev_ctx, msg_ctx);
1501 if (!lp__disable_spoolss() &&
1502 (rpc_spoolss_daemon() != RPC_DAEMON_DISABLED)) {
1503 bool bgq = lp_parm_bool(-1, "smbd", "backgroundqueue", true);
1505 if (!printing_subsystem_init(ev_ctx, msg_ctx, true, bgq)) {
1509 } else if (!lp__disable_spoolss() &&
1510 (rpc_spoolss_daemon() != RPC_DAEMON_DISABLED)) {
1511 if (!printing_subsystem_init(ev_ctx, msg_ctx, false, false)) {
1522 /* Started from inetd. fd 0 is the socket. */
1523 /* We will abort gracefully when the client or remote system
1527 /* close stdin, stdout (if not logging to it), but not stderr */
1528 close_low_fds(true, !debug_get_output_is_stdout(), false);
1535 smbd_setup_sig_chld_handler(parent);
1537 smbd_process(ev_ctx, msg_ctx, sock, true);
1539 exit_server_cleanly(NULL);
1543 if (!open_sockets_smbd(parent, ev_ctx, msg_ctx, ports))
1544 exit_server("open_sockets_smbd() failed");
1546 /* do a printer update now that all messaging has been set up,
1547 * before we allow clients to start connecting */
1548 if (!lp__disable_spoolss() &&
1549 (rpc_spoolss_daemon() != RPC_DAEMON_DISABLED)) {
1550 printing_subsystem_update(ev_ctx, msg_ctx, false);
1554 /* make sure we always have a valid stackframe */
1555 frame = talloc_stackframe();
1558 /* if we are running in the foreground then look for
1559 EOF on stdin, and exit if it happens. This allows
1560 us to die if the parent process dies
1561 Only do this on a pipe or socket, no other device.
1564 if (fstat(0, &st) != 0) {
1567 if (S_ISFIFO(st.st_mode) || S_ISSOCK(st.st_mode)) {
1568 tevent_add_fd(ev_ctx,
1577 smbd_parent_loop(ev_ctx, parent);
1579 exit_server_cleanly(NULL);