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 /* use a reasonable default set of ports - listing on 445 and 139 */
749 ports
= lp_smb_ports();
750 if (!ports
|| !*ports
) {
751 ports
= talloc_strdup(talloc_tos(), SMB_PORTS
);
753 ports
= talloc_strdup(talloc_tos(), ports
);
756 ports
= talloc_strdup(talloc_tos(), smb_ports
);
759 if (lp_interfaces() && lp_bind_interfaces_only()) {
760 /* We have been given an interfaces line, and been
761 told to only bind to those interfaces. Create a
762 socket per interface and bind to only these.
765 /* Now open a listen socket for each of the
767 for(i
= 0; i
< num_interfaces
; i
++) {
768 const struct sockaddr_storage
*ifss
=
769 iface_n_sockaddr_storage(i
);
774 DEBUG(0,("open_sockets_smbd: "
775 "interface %d has NULL IP address !\n",
781 next_token_talloc(talloc_tos(),&ptr
, &tok
, " \t,");) {
782 unsigned port
= atoi(tok
);
783 if (port
== 0 || port
> 0xffff) {
787 /* Keep the first port for mDNS service
794 if (!smbd_open_one_socket(parent
,
804 /* Just bind to 0.0.0.0 - accept connections
809 const char *sock_addr
= lp_socket_address();
811 const char *sock_ptr
;
813 if (strequal(sock_addr
, "0.0.0.0") ||
814 strequal(sock_addr
, "::")) {
816 sock_addr
= "::,0.0.0.0";
818 sock_addr
= "0.0.0.0";
822 for (sock_ptr
=sock_addr
;
823 next_token_talloc(talloc_tos(), &sock_ptr
, &sock_tok
, " \t,"); ) {
824 for (ptr
=ports
; next_token_talloc(talloc_tos(), &ptr
, &tok
, " \t,"); ) {
825 struct sockaddr_storage ss
;
827 unsigned port
= atoi(tok
);
828 if (port
== 0 || port
> 0xffff) {
832 /* Keep the first port for mDNS service
839 /* open an incoming socket */
840 if (!interpret_string_addr(&ss
, sock_tok
,
841 AI_NUMERICHOST
|AI_PASSIVE
)) {
845 if (!smbd_open_one_socket(parent
,
856 if (parent
->sockets
== NULL
) {
857 DEBUG(0,("open_sockets_smbd: No "
858 "sockets available to bind to.\n"));
862 /* Setup the main smbd so that we can get messages. Note that
863 do this after starting listening. This is needed as when in
864 clustered mode, ctdb won't allow us to start doing database
865 operations until it has gone thru a full startup, which
866 includes checking to see that smbd is listening. */
868 if (!serverid_register(messaging_server_id(msg_ctx
),
869 FLAG_MSG_GENERAL
|FLAG_MSG_SMBD
870 |FLAG_MSG_PRINT_GENERAL
872 DEBUG(0, ("open_sockets_smbd: Failed to register "
873 "myself in serverid.tdb\n"));
877 /* Listen to messages */
879 messaging_register(msg_ctx
, NULL
, MSG_SHUTDOWN
, msg_exit_server
);
880 messaging_register(msg_ctx
, ev_ctx
, MSG_SMB_CONF_UPDATED
,
881 smbd_parent_conf_updated
);
882 messaging_register(msg_ctx
, NULL
, MSG_SMB_STAT_CACHE_DELETE
,
883 smb_stat_cache_delete
);
884 messaging_register(msg_ctx
, NULL
, MSG_DEBUG
, smbd_msg_debug
);
885 messaging_register(msg_ctx
, ev_ctx
, MSG_PRINTER_PCAP
,
887 messaging_register(msg_ctx
, NULL
, MSG_SMB_BRL_VALIDATE
,
889 messaging_register(msg_ctx
, NULL
, MSG_SMB_FORCE_TDIS
,
890 smb_parent_force_tdis
);
892 messaging_register(msg_ctx
, NULL
,
893 ID_CACHE_DELETE
, smbd_parent_id_cache_delete
);
894 messaging_register(msg_ctx
, NULL
,
895 ID_CACHE_KILL
, smbd_parent_id_cache_kill
);
897 #ifdef CLUSTER_SUPPORT
898 if (lp_clustering()) {
899 ctdbd_register_reconfigure(messaging_ctdbd_connection());
904 messaging_register(msg_ctx
, NULL
, MSG_SMB_INJECT_FAULT
,
908 if (lp_multicast_dns_register() && (dns_port
!= 0)) {
909 #ifdef WITH_DNSSD_SUPPORT
910 smbd_setup_mdns_registration(ev_ctx
,
913 #ifdef WITH_AVAHI_SUPPORT
916 avahi_conn
= avahi_start_register(ev_ctx
,
919 if (avahi_conn
== NULL
) {
920 DEBUG(10, ("avahi_start_register failed\n"));
930 handle stdin becoming readable when we are in --foreground mode
932 static void smbd_stdin_handler(struct tevent_context
*ev
,
933 struct tevent_fd
*fde
,
938 if (read(0, &c
, 1) != 1) {
939 /* we have reached EOF on stdin, which means the
940 parent has exited. Shutdown the server */
941 exit_server_cleanly("EOF on stdin");
945 static void smbd_parent_loop(struct tevent_context
*ev_ctx
,
946 struct smbd_parent_context
*parent
)
948 /* now accept incoming connections - forking a new process
949 for each incoming connection */
950 DEBUG(2,("waiting for connections\n"));
953 TALLOC_CTX
*frame
= talloc_stackframe();
955 ret
= tevent_loop_once(ev_ctx
);
957 exit_server_cleanly("tevent_loop_once() error");
963 /* NOTREACHED return True; */
967 /****************************************************************************
968 Initialise connect, service and file structs.
969 ****************************************************************************/
971 static bool init_structs(void )
974 * Set the machine NETBIOS name if not already
975 * set from the config file.
987 static void smbd_parent_sig_term_handler(struct tevent_context
*ev
,
988 struct tevent_signal
*se
,
994 exit_server_cleanly("termination signal");
997 static void smbd_parent_sig_hup_handler(struct tevent_context
*ev
,
998 struct tevent_signal
*se
,
1004 struct smbd_parent_context
*parent
=
1005 talloc_get_type_abort(private_data
,
1006 struct smbd_parent_context
);
1008 change_to_root_user();
1009 DEBUG(1,("parent: Reloading services after SIGHUP\n"));
1010 reload_services(NULL
, NULL
, false);
1012 printing_subsystem_update(parent
->ev_ctx
, parent
->msg_ctx
, true);
1015 /****************************************************************************
1017 ****************************************************************************/
1019 /* Declare prototype for build_options() to avoid having to run it through
1020 mkproto.h. Mixing $(builddir) and $(srcdir) source files in the current
1021 prototype generation system is too complicated. */
1023 extern void build_options(bool screen
);
1025 int main(int argc
,const char *argv
[])
1027 /* shall I run as a daemon */
1028 bool is_daemon
= false;
1029 bool interactive
= false;
1031 bool no_process_group
= false;
1032 bool log_stdout
= false;
1034 char *profile_level
= NULL
;
1037 bool print_build_options
= False
;
1042 OPT_NO_PROCESS_GROUP
,
1045 struct poptOption long_options
[] = {
1047 {"daemon", 'D', POPT_ARG_NONE
, NULL
, OPT_DAEMON
, "Become a daemon (default)" },
1048 {"interactive", 'i', POPT_ARG_NONE
, NULL
, OPT_INTERACTIVE
, "Run interactive (not a daemon)"},
1049 {"foreground", 'F', POPT_ARG_NONE
, NULL
, OPT_FORK
, "Run daemon in foreground (for daemontools, etc.)" },
1050 {"no-process-group", '\0', POPT_ARG_NONE
, NULL
, OPT_NO_PROCESS_GROUP
, "Don't create a new process group" },
1051 {"log-stdout", 'S', POPT_ARG_NONE
, NULL
, OPT_LOG_STDOUT
, "Log to stdout" },
1052 {"build-options", 'b', POPT_ARG_NONE
, NULL
, 'b', "Print build options" },
1053 {"port", 'p', POPT_ARG_STRING
, &ports
, 0, "Listen on the specified ports"},
1054 {"profiling-level", 'P', POPT_ARG_STRING
, &profile_level
, 0, "Set profiling level","PROFILE_LEVEL"},
1056 POPT_COMMON_DYNCONFIG
1059 struct smbd_parent_context
*parent
= NULL
;
1062 struct tevent_context
*ev_ctx
;
1063 struct messaging_context
*msg_ctx
;
1064 struct tevent_signal
*se
;
1065 char *np_dir
= NULL
;
1068 * Do this before any other talloc operation
1070 talloc_enable_null_tracking();
1071 frame
= talloc_stackframe();
1073 setup_logging(argv
[0], DEBUG_DEFAULT_STDOUT
);
1077 smbd_init_globals();
1081 #ifdef HAVE_SET_AUTH_PARAMETERS
1082 set_auth_parameters(argc
,argv
);
1085 pc
= poptGetContext("smbd", argc
, argv
, long_options
, 0);
1086 while((opt
= poptGetNextOpt(pc
)) != -1) {
1091 case OPT_INTERACTIVE
:
1097 case OPT_NO_PROCESS_GROUP
:
1098 no_process_group
= true;
1100 case OPT_LOG_STDOUT
:
1104 print_build_options
= True
;
1107 d_fprintf(stderr
, "\nInvalid option %s: %s\n\n",
1108 poptBadOption(pc
, 0), poptStrerror(opt
));
1109 poptPrintUsage(pc
, stderr
, 0);
1113 poptFreeContext(pc
);
1121 setup_logging(argv
[0], DEBUG_STDOUT
);
1123 setup_logging(argv
[0], DEBUG_FILE
);
1126 if (print_build_options
) {
1127 build_options(True
); /* Display output to screen as well as debug */
1132 /* needed for SecureWare on SCO */
1136 set_remote_machine_name("smbd", False
);
1138 if (interactive
&& (DEBUGLEVEL
>= 9)) {
1139 talloc_enable_leak_report();
1142 if (log_stdout
&& Fork
) {
1143 DEBUG(0,("ERROR: Can't log to stdout (-S) unless daemon is in foreground (-F) or interactive (-i)\n"));
1147 /* we want to re-seed early to prevent time delays causing
1148 client problems at a later date. (tridge) */
1149 generate_random_buffer(NULL
, 0);
1151 /* get initial effective uid and gid */
1154 /* make absolutely sure we run as root - to handle cases where people
1155 are crazy enough to have it setuid */
1156 gain_root_privilege();
1157 gain_root_group_privilege();
1160 dump_core_setup("smbd", lp_logfile());
1162 /* we are never interested in SIGPIPE */
1163 BlockSignals(True
,SIGPIPE
);
1166 /* we are never interested in SIGFPE */
1167 BlockSignals(True
,SIGFPE
);
1170 #if defined(SIGUSR2)
1171 /* We are no longer interested in USR2 */
1172 BlockSignals(True
,SIGUSR2
);
1175 /* POSIX demands that signals are inherited. If the invoking process has
1176 * these signals masked, we will have problems, as we won't recieve them. */
1177 BlockSignals(False
, SIGHUP
);
1178 BlockSignals(False
, SIGUSR1
);
1179 BlockSignals(False
, SIGTERM
);
1181 /* Ensure we leave no zombies until we
1182 * correctly set up child handling below. */
1186 /* we want total control over the permissions on created files,
1187 so set our umask to 0 */
1192 DEBUG(0,("smbd version %s started.\n", samba_version_string()));
1193 DEBUGADD(0,("%s\n", COPYRIGHT_STARTUP_MESSAGE
));
1195 DEBUG(2,("uid=%d gid=%d euid=%d egid=%d\n",
1196 (int)getuid(),(int)getgid(),(int)geteuid(),(int)getegid()));
1198 /* Output the build options to the debug log */
1199 build_options(False
);
1201 if (sizeof(uint16
) < 2 || sizeof(uint32
) < 4) {
1202 DEBUG(0,("ERROR: Samba is not configured correctly for the word size on your machine\n"));
1206 if (!lp_load_initial_only(get_dyn_CONFIGFILE())) {
1207 DEBUG(0, ("error opening config file '%s'\n", get_dyn_CONFIGFILE()));
1211 /* Init the security context and global current_user */
1215 * Initialize the event context. The event context needs to be
1216 * initialized before the messaging context, cause the messaging
1217 * context holds an event context.
1218 * FIXME: This should be s3_tevent_context_init()
1220 ev_ctx
= server_event_context();
1221 if (ev_ctx
== NULL
) {
1226 * Init the messaging context
1227 * FIXME: This should only call messaging_init()
1229 msg_ctx
= server_messaging_context();
1230 if (msg_ctx
== NULL
) {
1235 * Reloading of the printers will not work here as we don't have a
1236 * server info and rpc services set up. It will be called later.
1238 if (!reload_services(NULL
, NULL
, false)) {
1242 /* ...NOTE... Log files are working from this point! */
1244 DEBUG(3,("loaded services\n"));
1249 if (!profile_setup(msg_ctx
, False
)) {
1250 DEBUG(0,("ERROR: failed to setup profiling\n"));
1253 if (profile_level
!= NULL
) {
1254 int pl
= atoi(profile_level
);
1255 struct server_id src
;
1257 DEBUG(1, ("setting profiling level: %s\n",profile_level
));
1259 set_profile_level(pl
, src
);
1263 if (!is_daemon
&& !is_a_socket(0)) {
1265 DEBUG(0,("standard input is not a socket, assuming -D option\n"));
1268 * Setting is_daemon here prevents us from eventually calling
1269 * the open_sockets_inetd()
1275 if (is_daemon
&& !interactive
) {
1276 DEBUG( 3, ( "Becoming a daemon.\n" ) );
1277 become_daemon(Fork
, no_process_group
, log_stdout
);
1280 set_my_unique_id(serverid_get_random_unique_id());
1284 * If we're interactive we want to set our own process group for
1285 * signal management.
1287 if (interactive
&& !no_process_group
)
1288 setpgid( (pid_t
)0, (pid_t
)0);
1291 if (!directory_exist(lp_lockdir()))
1292 mkdir(lp_lockdir(), 0755);
1294 if (!directory_exist(lp_piddir()))
1295 mkdir(lp_piddir(), 0755);
1298 pidfile_create("smbd");
1300 status
= reinit_after_fork(msg_ctx
,
1303 if (!NT_STATUS_IS_OK(status
)) {
1304 DEBUG(0,("reinit_after_fork() failed\n"));
1310 * Do not initialize the parent-child-pipe before becoming a
1311 * daemon: this is used to detect a died parent in the child
1314 status
= init_before_fork();
1315 if (!NT_STATUS_IS_OK(status
)) {
1316 DEBUG(0, ("init_before_fork failed: %s\n", nt_errstr(status
)));
1321 parent
= talloc_zero(ev_ctx
, struct smbd_parent_context
);
1323 exit_server("talloc(struct smbd_parent_context) failed");
1325 parent
->interactive
= interactive
;
1326 parent
->ev_ctx
= ev_ctx
;
1327 parent
->msg_ctx
= msg_ctx
;
1330 se
= tevent_add_signal(parent
->ev_ctx
,
1333 smbd_parent_sig_term_handler
,
1336 exit_server("failed to setup SIGTERM handler");
1338 se
= tevent_add_signal(parent
->ev_ctx
,
1341 smbd_parent_sig_hup_handler
,
1344 exit_server("failed to setup SIGHUP handler");
1347 /* Setup all the TDB's - including CLEAR_IF_FIRST tdb's. */
1349 if (smbd_memcache() == NULL
) {
1353 memcache_set_global(smbd_memcache());
1355 /* Initialise the password backed before the global_sam_sid
1356 to ensure that we fetch from ldap before we make a domain sid up */
1358 if(!initialize_password_db(false, ev_ctx
))
1361 if (!secrets_init()) {
1362 DEBUG(0, ("ERROR: smbd can not open secrets.tdb\n"));
1366 if (lp_server_role() == ROLE_DOMAIN_BDC
|| lp_server_role() == ROLE_DOMAIN_PDC
) {
1367 struct loadparm_context
*lp_ctx
= loadparm_init_s3(NULL
, loadparm_s3_context());
1368 if (!open_schannel_session_store(NULL
, lp_ctx
)) {
1369 DEBUG(0,("ERROR: Samba cannot open schannel store for secured NETLOGON operations.\n"));
1372 TALLOC_FREE(lp_ctx
);
1375 if(!get_global_sam_sid()) {
1376 DEBUG(0,("ERROR: Samba cannot create a SAM SID.\n"));
1380 if (!sessionid_init()) {
1384 if (!connections_init(True
))
1387 if (!locking_init())
1390 if (!messaging_tdb_parent_init(ev_ctx
)) {
1394 if (!smbd_parent_notify_init(NULL
, msg_ctx
, ev_ctx
)) {
1398 if (!serverid_parent_init(ev_ctx
)) {
1402 if (!W_ERROR_IS_OK(registry_init_full()))
1405 /* Open the share_info.tdb here, so we don't have to open
1406 after the fork on every single connection. This is a small
1407 performance improvment and reduces the total number of system
1409 if (!share_info_db_init()) {
1410 DEBUG(0,("ERROR: failed to load share info db.\n"));
1414 status
= init_system_session_info();
1415 if (!NT_STATUS_IS_OK(status
)) {
1416 DEBUG(1, ("ERROR: failed to setup system user info: %s.\n",
1417 nt_errstr(status
)));
1421 if (!init_guest_info()) {
1422 DEBUG(0,("ERROR: failed to setup guest info.\n"));
1426 if (!file_init_global()) {
1427 DEBUG(0, ("ERROR: file_init_global() failed\n"));
1431 /* This MUST be done before start_epmd() because otherwise
1432 * start_epmd() forks and races against dcesrv_ep_setup() to
1433 * call directory_create_or_exist() */
1434 if (!directory_create_or_exist(lp_ncalrpc_dir(), geteuid(), 0755)) {
1435 DEBUG(0, ("Failed to create pipe directory %s - %s\n",
1436 lp_ncalrpc_dir(), strerror(errno
)));
1440 np_dir
= talloc_asprintf(talloc_tos(), "%s/np", lp_ncalrpc_dir());
1442 DEBUG(0, ("%s: Out of memory\n", __location__
));
1446 if (!directory_create_or_exist(np_dir
, geteuid(), 0700)) {
1447 DEBUG(0, ("Failed to create pipe directory %s - %s\n",
1448 np_dir
, strerror(errno
)));
1452 if (is_daemon
&& !interactive
) {
1453 if (rpc_epmapper_daemon() == RPC_DAEMON_FORK
) {
1454 start_epmd(ev_ctx
, msg_ctx
);
1458 /* only start other daemons if we are running as a daemon
1459 * -- bad things will happen if smbd is launched via inetd
1460 * and we fork a copy of ourselves here */
1461 if (is_daemon
&& !interactive
) {
1463 if (rpc_lsasd_daemon() == RPC_DAEMON_FORK
) {
1464 start_lsasd(ev_ctx
, msg_ctx
);
1467 if (!lp__disable_spoolss() &&
1468 (rpc_spoolss_daemon() != RPC_DAEMON_DISABLED
)) {
1469 bool bgq
= lp_parm_bool(-1, "smbd", "backgroundqueue", true);
1471 if (!printing_subsystem_init(ev_ctx
, msg_ctx
, true, bgq
)) {
1475 } else if (!lp__disable_spoolss() &&
1476 (rpc_spoolss_daemon() != RPC_DAEMON_DISABLED
)) {
1477 if (!printing_subsystem_init(ev_ctx
, msg_ctx
, false, false)) {
1482 if (!dcesrv_ep_setup(ev_ctx
, msg_ctx
)) {
1492 /* Started from inetd. fd 0 is the socket. */
1493 /* We will abort gracefully when the client or remote system
1497 /* close stdin, stdout (if not logging to it), but not stderr */
1498 close_low_fds(true, !debug_get_output_is_stdout(), false);
1505 smbd_setup_sig_chld_handler(parent
);
1507 smbd_process(ev_ctx
, msg_ctx
, sock
, true);
1509 exit_server_cleanly(NULL
);
1513 if (!open_sockets_smbd(parent
, ev_ctx
, msg_ctx
, ports
))
1514 exit_server("open_sockets_smbd() failed");
1516 /* do a printer update now that all messaging has been set up,
1517 * before we allow clients to start connecting */
1518 printing_subsystem_update(ev_ctx
, msg_ctx
, false);
1521 /* make sure we always have a valid stackframe */
1522 frame
= talloc_stackframe();
1525 /* if we are running in the foreground then look for
1526 EOF on stdin, and exit if it happens. This allows
1527 us to die if the parent process dies
1529 tevent_add_fd(ev_ctx
, parent
, 0, TEVENT_FD_READ
, smbd_stdin_handler
, NULL
);
1532 smbd_parent_loop(ev_ctx
, parent
);
1534 exit_server_cleanly(NULL
);