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 if (unclean_shutdown
) {
420 /* a child terminated uncleanly so tickle all
421 processes to see if they can grab any of the
424 DEBUG(3,(__location__
" Unclean shutdown of pid %u\n",
426 if (parent
->cleanup_te
== NULL
) {
427 /* call the cleanup timer, but not too often */
428 int cleanup_time
= lp_parm_int(-1, "smbd", "cleanuptime", 20);
429 parent
->cleanup_te
= tevent_add_timer(parent
->ev_ctx
,
431 timeval_current_ofs(cleanup_time
, 0),
434 DEBUG(1,("Scheduled cleanup of brl and lock database after unclean shutdown\n"));
438 child_id
= pid_to_procid(pid
);
440 if (!serverid_deregister(child_id
)) {
441 DEBUG(1, ("Could not remove pid %d from serverid.tdb\n",
445 for (child
= parent
->children
; child
!= NULL
; child
= child
->next
) {
446 if (child
->pid
== pid
) {
447 struct smbd_child_pid
*tmp
= child
;
448 DLIST_REMOVE(parent
->children
, child
);
450 parent
->num_children
-= 1;
455 /* not all forked child processes are added to the children list */
456 DEBUG(2, ("Could not find child %d -- ignoring\n", (int)pid
));
459 /****************************************************************************
460 Have we reached the process limit ?
461 ****************************************************************************/
463 static bool allowable_number_of_smbd_processes(struct smbd_parent_context
*parent
)
465 int max_processes
= lp_max_smbd_processes();
470 return parent
->num_children
< max_processes
;
473 static void smbd_sig_chld_handler(struct tevent_context
*ev
,
474 struct tevent_signal
*se
,
482 struct smbd_parent_context
*parent
=
483 talloc_get_type_abort(private_data
,
484 struct smbd_parent_context
);
486 while ((pid
= sys_waitpid(-1, &status
, WNOHANG
)) > 0) {
487 bool unclean_shutdown
= False
;
489 /* If the child terminated normally, assume
490 it was an unclean shutdown unless the
493 if (WIFEXITED(status
)) {
494 unclean_shutdown
= WEXITSTATUS(status
);
496 /* If the child terminated due to a signal
497 we always assume it was unclean.
499 if (WIFSIGNALED(status
)) {
500 unclean_shutdown
= True
;
502 remove_child_pid(parent
, pid
, unclean_shutdown
);
506 static void smbd_setup_sig_chld_handler(struct smbd_parent_context
*parent
)
508 struct tevent_signal
*se
;
510 se
= tevent_add_signal(parent
->ev_ctx
,
511 parent
, /* mem_ctx */
513 smbd_sig_chld_handler
,
516 exit_server("failed to setup SIGCHLD handler");
520 static void smbd_open_socket_close_fn(struct tevent_context
*ev
,
521 struct tevent_fd
*fde
,
525 /* this might be the socket_wrapper swrap_close() */
529 static void smbd_accept_connection(struct tevent_context
*ev
,
530 struct tevent_fd
*fde
,
534 struct smbd_open_socket
*s
= talloc_get_type_abort(private_data
,
535 struct smbd_open_socket
);
536 struct messaging_context
*msg_ctx
= s
->parent
->msg_ctx
;
537 struct sockaddr_storage addr
;
538 socklen_t in_addrlen
= sizeof(addr
);
543 fd
= accept(s
->fd
, (struct sockaddr
*)(void *)&addr
,&in_addrlen
);
544 if (fd
== -1 && errno
== EINTR
)
548 DEBUG(0,("open_sockets_smbd: accept: %s\n",
553 if (s
->parent
->interactive
) {
554 reinit_after_fork(msg_ctx
, ev
, true);
555 smbd_process(ev
, msg_ctx
, fd
, true);
556 exit_server_cleanly("end of interactive mode");
560 if (!allowable_number_of_smbd_processes(s
->parent
)) {
566 * Generate a unique id in the parent process so that we use
567 * the global random state in the parent.
569 unique_id
= serverid_get_random_unique_id();
573 NTSTATUS status
= NT_STATUS_OK
;
579 * Can't use TALLOC_FREE here. Nulling out the argument to it
580 * would overwrite memory we've just freed.
582 talloc_free(s
->parent
);
585 set_my_unique_id(unique_id
);
587 /* Stop zombies, the parent explicitly handles
588 * them, counting worker smbds. */
591 status
= reinit_after_fork(msg_ctx
,
594 if (!NT_STATUS_IS_OK(status
)) {
595 if (NT_STATUS_EQUAL(status
,
596 NT_STATUS_TOO_MANY_OPENED_FILES
)) {
597 DEBUG(0,("child process cannot initialize "
598 "because too many files are open\n"));
601 if (lp_clustering() &&
602 NT_STATUS_EQUAL(status
,
603 NT_STATUS_INTERNAL_DB_ERROR
)) {
604 DEBUG(1,("child process cannot initialize "
605 "because connection to CTDB "
610 DEBUG(0,("reinit_after_fork() failed\n"));
611 smb_panic("reinit_after_fork() failed");
614 smbd_process(ev
, msg_ctx
, fd
, false);
616 exit_server_cleanly("end of child");
621 DEBUG(0,("smbd_accept_connection: fork() failed: %s\n",
625 /* The parent doesn't need this socket */
628 /* Sun May 6 18:56:14 2001 ackley@cs.unm.edu:
629 Clear the closed fd info out of server_fd --
630 and more importantly, out of client_fd in
631 util_sock.c, to avoid a possible
632 getpeername failure if we reopen the logs
633 and use %I in the filename.
637 add_child_pid(s
->parent
, pid
);
640 /* Force parent to check log size after
641 * spawning child. Fix from
642 * klausr@ITAP.Physik.Uni-Stuttgart.De. The
643 * parent smbd will log to logserver.smb. It
644 * writes only two messages for each child
645 * started/finished. But each child writes,
646 * say, 50 messages also in logserver.smb,
647 * begining with the debug_count of the
648 * parent, before the child opens its own log
649 * file logserver.client. In a worst case
650 * scenario the size of logserver.smb would be
651 * checked after about 50*50=2500 messages
654 force_check_log_size();
657 static bool smbd_open_one_socket(struct smbd_parent_context
*parent
,
658 struct tevent_context
*ev_ctx
,
659 struct messaging_context
*msg_ctx
,
660 const struct sockaddr_storage
*ifss
,
663 struct smbd_open_socket
*s
;
665 s
= talloc(parent
, struct smbd_open_socket
);
671 s
->fd
= open_socket_in(SOCK_STREAM
,
673 parent
->sockets
== NULL
? 0 : 2,
677 DEBUG(0,("smbd_open_once_socket: open_socket_in: "
678 "%s\n", strerror(errno
)));
681 * We ignore an error here, as we've done before
686 /* ready to listen */
687 set_socket_options(s
->fd
, "SO_KEEPALIVE");
688 set_socket_options(s
->fd
, lp_socket_options());
690 /* Set server socket to
691 * non-blocking for the accept. */
692 set_blocking(s
->fd
, False
);
694 if (listen(s
->fd
, SMBD_LISTEN_BACKLOG
) == -1) {
695 DEBUG(0,("open_sockets_smbd: listen: "
696 "%s\n", strerror(errno
)));
702 s
->fde
= tevent_add_fd(ev_ctx
,
704 s
->fd
, TEVENT_FD_READ
,
705 smbd_accept_connection
,
708 DEBUG(0,("open_sockets_smbd: "
709 "tevent_add_fd: %s\n",
715 tevent_fd_set_close_fn(s
->fde
, smbd_open_socket_close_fn
);
717 DLIST_ADD_END(parent
->sockets
, s
, struct smbd_open_socket
*);
722 /****************************************************************************
723 Open the socket communication.
724 ****************************************************************************/
726 static bool open_sockets_smbd(struct smbd_parent_context
*parent
,
727 struct tevent_context
*ev_ctx
,
728 struct messaging_context
*msg_ctx
,
729 const char *smb_ports
)
731 int num_interfaces
= iface_count();
734 unsigned dns_port
= 0;
741 smbd_setup_sig_chld_handler(parent
);
743 /* use a reasonable default set of ports - listing on 445 and 139 */
745 ports
= lp_smb_ports();
746 if (!ports
|| !*ports
) {
747 ports
= talloc_strdup(talloc_tos(), SMB_PORTS
);
749 ports
= talloc_strdup(talloc_tos(), ports
);
752 ports
= talloc_strdup(talloc_tos(), smb_ports
);
755 if (lp_interfaces() && lp_bind_interfaces_only()) {
756 /* We have been given an interfaces line, and been
757 told to only bind to those interfaces. Create a
758 socket per interface and bind to only these.
761 /* Now open a listen socket for each of the
763 for(i
= 0; i
< num_interfaces
; i
++) {
764 const struct sockaddr_storage
*ifss
=
765 iface_n_sockaddr_storage(i
);
770 DEBUG(0,("open_sockets_smbd: "
771 "interface %d has NULL IP address !\n",
777 next_token_talloc(talloc_tos(),&ptr
, &tok
, " \t,");) {
778 unsigned port
= atoi(tok
);
779 if (port
== 0 || port
> 0xffff) {
783 /* Keep the first port for mDNS service
790 if (!smbd_open_one_socket(parent
,
800 /* Just bind to 0.0.0.0 - accept connections
805 const char *sock_addr
= lp_socket_address();
807 const char *sock_ptr
;
809 if (strequal(sock_addr
, "0.0.0.0") ||
810 strequal(sock_addr
, "::")) {
812 sock_addr
= "::,0.0.0.0";
814 sock_addr
= "0.0.0.0";
818 for (sock_ptr
=sock_addr
;
819 next_token_talloc(talloc_tos(), &sock_ptr
, &sock_tok
, " \t,"); ) {
820 for (ptr
=ports
; next_token_talloc(talloc_tos(), &ptr
, &tok
, " \t,"); ) {
821 struct sockaddr_storage ss
;
823 unsigned port
= atoi(tok
);
824 if (port
== 0 || port
> 0xffff) {
828 /* Keep the first port for mDNS service
835 /* open an incoming socket */
836 if (!interpret_string_addr(&ss
, sock_tok
,
837 AI_NUMERICHOST
|AI_PASSIVE
)) {
841 if (!smbd_open_one_socket(parent
,
852 if (parent
->sockets
== NULL
) {
853 DEBUG(0,("open_sockets_smbd: No "
854 "sockets available to bind to.\n"));
858 /* Setup the main smbd so that we can get messages. Note that
859 do this after starting listening. This is needed as when in
860 clustered mode, ctdb won't allow us to start doing database
861 operations until it has gone thru a full startup, which
862 includes checking to see that smbd is listening. */
864 if (!serverid_register(messaging_server_id(msg_ctx
),
865 FLAG_MSG_GENERAL
|FLAG_MSG_SMBD
866 |FLAG_MSG_PRINT_GENERAL
868 DEBUG(0, ("open_sockets_smbd: Failed to register "
869 "myself in serverid.tdb\n"));
873 /* Listen to messages */
875 messaging_register(msg_ctx
, NULL
, MSG_SHUTDOWN
, msg_exit_server
);
876 messaging_register(msg_ctx
, ev_ctx
, MSG_SMB_CONF_UPDATED
,
877 smbd_parent_conf_updated
);
878 messaging_register(msg_ctx
, NULL
, MSG_SMB_STAT_CACHE_DELETE
,
879 smb_stat_cache_delete
);
880 messaging_register(msg_ctx
, NULL
, MSG_DEBUG
, smbd_msg_debug
);
881 messaging_register(msg_ctx
, ev_ctx
, MSG_PRINTER_PCAP
,
883 messaging_register(msg_ctx
, NULL
, MSG_SMB_BRL_VALIDATE
,
885 messaging_register(msg_ctx
, NULL
, MSG_SMB_FORCE_TDIS
,
886 smb_parent_force_tdis
);
888 messaging_register(msg_ctx
, NULL
,
889 ID_CACHE_DELETE
, smbd_parent_id_cache_delete
);
890 messaging_register(msg_ctx
, NULL
,
891 ID_CACHE_KILL
, smbd_parent_id_cache_kill
);
893 #ifdef CLUSTER_SUPPORT
894 if (lp_clustering()) {
895 ctdbd_register_reconfigure(messaging_ctdbd_connection());
900 messaging_register(msg_ctx
, NULL
, MSG_SMB_INJECT_FAULT
,
904 if (lp_multicast_dns_register() && (dns_port
!= 0)) {
905 #ifdef WITH_DNSSD_SUPPORT
906 smbd_setup_mdns_registration(ev_ctx
,
909 #ifdef WITH_AVAHI_SUPPORT
912 avahi_conn
= avahi_start_register(ev_ctx
,
915 if (avahi_conn
== NULL
) {
916 DEBUG(10, ("avahi_start_register failed\n"));
926 handle stdin becoming readable when we are in --foreground mode
928 static void smbd_stdin_handler(struct tevent_context
*ev
,
929 struct tevent_fd
*fde
,
934 if (read(0, &c
, 1) != 1) {
935 /* we have reached EOF on stdin, which means the
936 parent has exited. Shutdown the server */
937 exit_server_cleanly("EOF on stdin");
941 static void smbd_parent_loop(struct tevent_context
*ev_ctx
,
942 struct smbd_parent_context
*parent
)
944 /* now accept incoming connections - forking a new process
945 for each incoming connection */
946 DEBUG(2,("waiting for connections\n"));
949 TALLOC_CTX
*frame
= talloc_stackframe();
951 ret
= tevent_loop_once(ev_ctx
);
953 exit_server_cleanly("tevent_loop_once() error");
959 /* NOTREACHED return True; */
963 /****************************************************************************
964 Initialise connect, service and file structs.
965 ****************************************************************************/
967 static bool init_structs(void )
970 * Set the machine NETBIOS name if not already
971 * set from the config file.
983 static void smbd_parent_sig_term_handler(struct tevent_context
*ev
,
984 struct tevent_signal
*se
,
990 exit_server_cleanly("termination signal");
993 static void smbd_parent_sig_hup_handler(struct tevent_context
*ev
,
994 struct tevent_signal
*se
,
1000 struct smbd_parent_context
*parent
=
1001 talloc_get_type_abort(private_data
,
1002 struct smbd_parent_context
);
1004 change_to_root_user();
1005 DEBUG(1,("parent: Reloading services after SIGHUP\n"));
1006 reload_services(NULL
, NULL
, false);
1008 printing_subsystem_update(parent
->ev_ctx
, parent
->msg_ctx
, true);
1011 /****************************************************************************
1013 ****************************************************************************/
1015 /* Declare prototype for build_options() to avoid having to run it through
1016 mkproto.h. Mixing $(builddir) and $(srcdir) source files in the current
1017 prototype generation system is too complicated. */
1019 extern void build_options(bool screen
);
1021 int main(int argc
,const char *argv
[])
1023 /* shall I run as a daemon */
1024 bool is_daemon
= false;
1025 bool interactive
= false;
1027 bool no_process_group
= false;
1028 bool log_stdout
= false;
1030 char *profile_level
= NULL
;
1033 bool print_build_options
= False
;
1038 OPT_NO_PROCESS_GROUP
,
1041 struct poptOption long_options
[] = {
1043 {"daemon", 'D', POPT_ARG_NONE
, NULL
, OPT_DAEMON
, "Become a daemon (default)" },
1044 {"interactive", 'i', POPT_ARG_NONE
, NULL
, OPT_INTERACTIVE
, "Run interactive (not a daemon)"},
1045 {"foreground", 'F', POPT_ARG_NONE
, NULL
, OPT_FORK
, "Run daemon in foreground (for daemontools, etc.)" },
1046 {"no-process-group", '\0', POPT_ARG_NONE
, NULL
, OPT_NO_PROCESS_GROUP
, "Don't create a new process group" },
1047 {"log-stdout", 'S', POPT_ARG_NONE
, NULL
, OPT_LOG_STDOUT
, "Log to stdout" },
1048 {"build-options", 'b', POPT_ARG_NONE
, NULL
, 'b', "Print build options" },
1049 {"port", 'p', POPT_ARG_STRING
, &ports
, 0, "Listen on the specified ports"},
1050 {"profiling-level", 'P', POPT_ARG_STRING
, &profile_level
, 0, "Set profiling level","PROFILE_LEVEL"},
1052 POPT_COMMON_DYNCONFIG
1055 struct smbd_parent_context
*parent
= NULL
;
1058 struct tevent_context
*ev_ctx
;
1059 struct messaging_context
*msg_ctx
;
1060 struct tevent_signal
*se
;
1061 char *np_dir
= NULL
;
1064 * Do this before any other talloc operation
1066 talloc_enable_null_tracking();
1067 frame
= talloc_stackframe();
1069 setup_logging(argv
[0], DEBUG_DEFAULT_STDOUT
);
1073 smbd_init_globals();
1077 #ifdef HAVE_SET_AUTH_PARAMETERS
1078 set_auth_parameters(argc
,argv
);
1081 pc
= poptGetContext("smbd", argc
, argv
, long_options
, 0);
1082 while((opt
= poptGetNextOpt(pc
)) != -1) {
1087 case OPT_INTERACTIVE
:
1093 case OPT_NO_PROCESS_GROUP
:
1094 no_process_group
= true;
1096 case OPT_LOG_STDOUT
:
1100 print_build_options
= True
;
1103 d_fprintf(stderr
, "\nInvalid option %s: %s\n\n",
1104 poptBadOption(pc
, 0), poptStrerror(opt
));
1105 poptPrintUsage(pc
, stderr
, 0);
1109 poptFreeContext(pc
);
1117 setup_logging(argv
[0], DEBUG_STDOUT
);
1119 setup_logging(argv
[0], DEBUG_FILE
);
1122 if (print_build_options
) {
1123 build_options(True
); /* Display output to screen as well as debug */
1128 /* needed for SecureWare on SCO */
1132 set_remote_machine_name("smbd", False
);
1134 if (interactive
&& (DEBUGLEVEL
>= 9)) {
1135 talloc_enable_leak_report();
1138 if (log_stdout
&& Fork
) {
1139 DEBUG(0,("ERROR: Can't log to stdout (-S) unless daemon is in foreground (-F) or interactive (-i)\n"));
1143 /* we want to re-seed early to prevent time delays causing
1144 client problems at a later date. (tridge) */
1145 generate_random_buffer(NULL
, 0);
1147 /* get initial effective uid and gid */
1150 /* make absolutely sure we run as root - to handle cases where people
1151 are crazy enough to have it setuid */
1152 gain_root_privilege();
1153 gain_root_group_privilege();
1156 dump_core_setup("smbd", lp_logfile());
1158 /* we are never interested in SIGPIPE */
1159 BlockSignals(True
,SIGPIPE
);
1162 /* we are never interested in SIGFPE */
1163 BlockSignals(True
,SIGFPE
);
1166 #if defined(SIGUSR2)
1167 /* We are no longer interested in USR2 */
1168 BlockSignals(True
,SIGUSR2
);
1171 /* POSIX demands that signals are inherited. If the invoking process has
1172 * these signals masked, we will have problems, as we won't recieve them. */
1173 BlockSignals(False
, SIGHUP
);
1174 BlockSignals(False
, SIGUSR1
);
1175 BlockSignals(False
, SIGTERM
);
1177 /* Ensure we leave no zombies until we
1178 * correctly set up child handling below. */
1182 /* we want total control over the permissions on created files,
1183 so set our umask to 0 */
1188 DEBUG(0,("smbd version %s started.\n", samba_version_string()));
1189 DEBUGADD(0,("%s\n", COPYRIGHT_STARTUP_MESSAGE
));
1191 DEBUG(2,("uid=%d gid=%d euid=%d egid=%d\n",
1192 (int)getuid(),(int)getgid(),(int)geteuid(),(int)getegid()));
1194 /* Output the build options to the debug log */
1195 build_options(False
);
1197 if (sizeof(uint16
) < 2 || sizeof(uint32
) < 4) {
1198 DEBUG(0,("ERROR: Samba is not configured correctly for the word size on your machine\n"));
1202 if (!lp_load_initial_only(get_dyn_CONFIGFILE())) {
1203 DEBUG(0, ("error opening config file '%s'\n", get_dyn_CONFIGFILE()));
1207 /* Init the security context and global current_user */
1211 * Initialize the event context. The event context needs to be
1212 * initialized before the messaging context, cause the messaging
1213 * context holds an event context.
1214 * FIXME: This should be s3_tevent_context_init()
1216 ev_ctx
= server_event_context();
1217 if (ev_ctx
== NULL
) {
1222 * Init the messaging context
1223 * FIXME: This should only call messaging_init()
1225 msg_ctx
= server_messaging_context();
1226 if (msg_ctx
== NULL
) {
1231 * Reloading of the printers will not work here as we don't have a
1232 * server info and rpc services set up. It will be called later.
1234 if (!reload_services(NULL
, NULL
, false)) {
1238 /* ...NOTE... Log files are working from this point! */
1240 DEBUG(3,("loaded services\n"));
1245 if (!profile_setup(msg_ctx
, False
)) {
1246 DEBUG(0,("ERROR: failed to setup profiling\n"));
1249 if (profile_level
!= NULL
) {
1250 int pl
= atoi(profile_level
);
1251 struct server_id src
;
1253 DEBUG(1, ("setting profiling level: %s\n",profile_level
));
1255 set_profile_level(pl
, src
);
1259 if (!is_daemon
&& !is_a_socket(0)) {
1261 DEBUG(0,("standard input is not a socket, assuming -D option\n"));
1264 * Setting is_daemon here prevents us from eventually calling
1265 * the open_sockets_inetd()
1271 if (is_daemon
&& !interactive
) {
1272 DEBUG( 3, ( "Becoming a daemon.\n" ) );
1273 become_daemon(Fork
, no_process_group
, log_stdout
);
1276 set_my_unique_id(serverid_get_random_unique_id());
1280 * If we're interactive we want to set our own process group for
1281 * signal management.
1283 if (interactive
&& !no_process_group
)
1284 setpgid( (pid_t
)0, (pid_t
)0);
1287 if (!directory_exist(lp_lockdir()))
1288 mkdir(lp_lockdir(), 0755);
1290 if (!directory_exist(lp_piddir()))
1291 mkdir(lp_piddir(), 0755);
1294 pidfile_create("smbd");
1296 status
= reinit_after_fork(msg_ctx
,
1299 if (!NT_STATUS_IS_OK(status
)) {
1300 DEBUG(0,("reinit_after_fork() failed\n"));
1306 * Do not initialize the parent-child-pipe before becoming a
1307 * daemon: this is used to detect a died parent in the child
1310 status
= init_before_fork();
1311 if (!NT_STATUS_IS_OK(status
)) {
1312 DEBUG(0, ("init_before_fork failed: %s\n", nt_errstr(status
)));
1317 parent
= talloc_zero(ev_ctx
, struct smbd_parent_context
);
1319 exit_server("talloc(struct smbd_parent_context) failed");
1321 parent
->interactive
= interactive
;
1322 parent
->ev_ctx
= ev_ctx
;
1323 parent
->msg_ctx
= msg_ctx
;
1326 se
= tevent_add_signal(parent
->ev_ctx
,
1329 smbd_parent_sig_term_handler
,
1332 exit_server("failed to setup SIGTERM handler");
1334 se
= tevent_add_signal(parent
->ev_ctx
,
1337 smbd_parent_sig_hup_handler
,
1340 exit_server("failed to setup SIGHUP handler");
1343 /* Setup all the TDB's - including CLEAR_IF_FIRST tdb's. */
1345 if (smbd_memcache() == NULL
) {
1349 memcache_set_global(smbd_memcache());
1351 /* Initialise the password backed before the global_sam_sid
1352 to ensure that we fetch from ldap before we make a domain sid up */
1354 if(!initialize_password_db(false, ev_ctx
))
1357 if (!secrets_init()) {
1358 DEBUG(0, ("ERROR: smbd can not open secrets.tdb\n"));
1362 if (lp_server_role() == ROLE_DOMAIN_BDC
|| lp_server_role() == ROLE_DOMAIN_PDC
) {
1363 struct loadparm_context
*lp_ctx
= loadparm_init_s3(NULL
, loadparm_s3_context());
1364 if (!open_schannel_session_store(NULL
, lp_ctx
)) {
1365 DEBUG(0,("ERROR: Samba cannot open schannel store for secured NETLOGON operations.\n"));
1368 TALLOC_FREE(lp_ctx
);
1371 if(!get_global_sam_sid()) {
1372 DEBUG(0,("ERROR: Samba cannot create a SAM SID.\n"));
1376 if (!sessionid_init()) {
1380 if (!connections_init(True
))
1383 if (!locking_init())
1386 if (!messaging_tdb_parent_init(ev_ctx
)) {
1390 if (!smbd_parent_notify_init(NULL
, msg_ctx
, ev_ctx
)) {
1394 if (!serverid_parent_init(ev_ctx
)) {
1398 if (!W_ERROR_IS_OK(registry_init_full()))
1401 /* Open the share_info.tdb here, so we don't have to open
1402 after the fork on every single connection. This is a small
1403 performance improvment and reduces the total number of system
1405 if (!share_info_db_init()) {
1406 DEBUG(0,("ERROR: failed to load share info db.\n"));
1410 status
= init_system_session_info();
1411 if (!NT_STATUS_IS_OK(status
)) {
1412 DEBUG(1, ("ERROR: failed to setup system user info: %s.\n",
1413 nt_errstr(status
)));
1417 if (!init_guest_info()) {
1418 DEBUG(0,("ERROR: failed to setup guest info.\n"));
1422 if (!file_init_global()) {
1423 DEBUG(0, ("ERROR: file_init_global() failed\n"));
1427 /* This MUST be done before start_epmd() because otherwise
1428 * start_epmd() forks and races against dcesrv_ep_setup() to
1429 * call directory_create_or_exist() */
1430 if (!directory_create_or_exist(lp_ncalrpc_dir(), geteuid(), 0755)) {
1431 DEBUG(0, ("Failed to create pipe directory %s - %s\n",
1432 lp_ncalrpc_dir(), strerror(errno
)));
1436 np_dir
= talloc_asprintf(talloc_tos(), "%s/np", lp_ncalrpc_dir());
1438 DEBUG(0, ("%s: Out of memory\n", __location__
));
1442 if (!directory_create_or_exist(np_dir
, geteuid(), 0700)) {
1443 DEBUG(0, ("Failed to create pipe directory %s - %s\n",
1444 np_dir
, strerror(errno
)));
1448 if (is_daemon
&& !interactive
) {
1449 if (rpc_epmapper_daemon() == RPC_DAEMON_FORK
) {
1450 start_epmd(ev_ctx
, msg_ctx
);
1454 /* only start other daemons if we are running as a daemon
1455 * -- bad things will happen if smbd is launched via inetd
1456 * and we fork a copy of ourselves here */
1457 if (is_daemon
&& !interactive
) {
1459 if (rpc_lsasd_daemon() == RPC_DAEMON_FORK
) {
1460 start_lsasd(ev_ctx
, msg_ctx
);
1463 if (!lp__disable_spoolss() &&
1464 (rpc_spoolss_daemon() != RPC_DAEMON_DISABLED
)) {
1465 bool bgq
= lp_parm_bool(-1, "smbd", "backgroundqueue", true);
1467 if (!printing_subsystem_init(ev_ctx
, msg_ctx
, true, bgq
)) {
1471 } else if (!lp__disable_spoolss() &&
1472 (rpc_spoolss_daemon() != RPC_DAEMON_DISABLED
)) {
1473 if (!printing_subsystem_init(ev_ctx
, msg_ctx
, false, false)) {
1478 if (!dcesrv_ep_setup(ev_ctx
, msg_ctx
)) {
1488 /* Started from inetd. fd 0 is the socket. */
1489 /* We will abort gracefully when the client or remote system
1493 /* close stdin, stdout (if not logging to it), but not stderr */
1494 close_low_fds(true, !debug_get_output_is_stdout(), false);
1501 smbd_setup_sig_chld_handler(parent
);
1503 smbd_process(ev_ctx
, msg_ctx
, sock
, true);
1505 exit_server_cleanly(NULL
);
1509 if (!open_sockets_smbd(parent
, ev_ctx
, msg_ctx
, ports
))
1510 exit_server("open_sockets_smbd() failed");
1512 /* do a printer update now that all messaging has been set up,
1513 * before we allow clients to start connecting */
1514 printing_subsystem_update(ev_ctx
, msg_ctx
, false);
1517 /* make sure we always have a valid stackframe */
1518 frame
= talloc_stackframe();
1521 /* if we are running in the foreground then look for
1522 EOF on stdin, and exit if it happens. This allows
1523 us to die if the parent process dies
1525 tevent_add_fd(ev_ctx
, parent
, 0, TEVENT_FD_READ
, smbd_stdin_handler
, NULL
);
1528 smbd_parent_loop(ev_ctx
, parent
);
1530 exit_server_cleanly(NULL
);