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_flush(struct messaging_context
*ctx
,
254 struct server_id srv_id
,
257 id_cache_flush_message(ctx
, data
, msg_type
, srv_id
, msg_data
);
259 messaging_send_to_children(ctx
, msg_type
, msg_data
);
262 static void smbd_parent_id_cache_delete(struct messaging_context
*ctx
,
265 struct server_id srv_id
,
268 id_cache_delete_message(ctx
, data
, msg_type
, srv_id
, msg_data
);
270 messaging_send_to_children(ctx
, msg_type
, msg_data
);
273 struct smbd_parent_notify_state
{
274 struct tevent_context
*ev
;
275 struct messaging_context
*msg
;
277 struct notify_context
*notify
;
280 static int smbd_parent_notify_cleanup(void *private_data
);
281 static void smbd_parent_notify_cleanup_done(struct tevent_req
*req
);
282 static void smbd_parent_notify_proxy_done(struct tevent_req
*req
);
284 static bool smbd_parent_notify_init(TALLOC_CTX
*mem_ctx
,
285 struct messaging_context
*msg
,
286 struct tevent_context
*ev
)
288 struct smbd_parent_notify_state
*state
;
289 struct tevent_req
*req
;
291 state
= talloc(mem_ctx
, struct smbd_parent_notify_state
);
297 state
->msgtype
= MSG_SMB_NOTIFY_CLEANUP
;
299 state
->notify
= notify_init(state
, msg
, ev
);
300 if (state
->notify
== NULL
) {
303 req
= background_job_send(
304 state
, state
->ev
, state
->msg
, &state
->msgtype
, 1,
305 lp_parm_int(-1, "smbd", "notify cleanup interval", 60),
306 smbd_parent_notify_cleanup
, state
->notify
);
310 tevent_req_set_callback(req
, smbd_parent_notify_cleanup_done
, state
);
312 if (!lp_clustering()) {
316 req
= notify_cluster_proxy_send(state
, ev
, state
->notify
);
320 tevent_req_set_callback(req
, smbd_parent_notify_proxy_done
, state
);
328 static int smbd_parent_notify_cleanup(void *private_data
)
330 struct notify_context
*notify
= talloc_get_type_abort(
331 private_data
, struct notify_context
);
332 notify_cleanup(notify
);
333 return lp_parm_int(-1, "smbd", "notify cleanup interval", 60);
336 static void smbd_parent_notify_cleanup_done(struct tevent_req
*req
)
338 struct smbd_parent_notify_state
*state
= tevent_req_callback_data(
339 req
, struct smbd_parent_notify_state
);
342 status
= background_job_recv(req
);
344 DEBUG(1, ("notify cleanup job ended with %s\n", nt_errstr(status
)));
347 * Provide self-healing: Whatever the error condition was, it
348 * will have printed it into log.smbd. Just retrying and
349 * spamming log.smbd once a minute should be fine.
351 req
= background_job_send(
352 state
, state
->ev
, state
->msg
, &state
->msgtype
, 1, 60,
353 smbd_parent_notify_cleanup
, state
->notify
);
355 DEBUG(1, ("background_job_send failed\n"));
358 tevent_req_set_callback(req
, smbd_parent_notify_cleanup_done
, state
);
361 static void smbd_parent_notify_proxy_done(struct tevent_req
*req
)
365 ret
= notify_cluster_proxy_recv(req
);
367 DEBUG(1, ("notify proxy job ended with %s\n", strerror(ret
)));
370 static void smb_parent_force_tdis(struct messaging_context
*ctx
,
373 struct server_id srv_id
,
376 messaging_send_to_children(ctx
, msg_type
, msg_data
);
379 static void add_child_pid(struct smbd_parent_context
*parent
,
382 struct smbd_child_pid
*child
;
384 child
= talloc_zero(parent
, struct smbd_child_pid
);
386 DEBUG(0, ("Could not add child struct -- malloc failed\n"));
390 DLIST_ADD(parent
->children
, child
);
391 parent
->num_children
+= 1;
395 at most every smbd:cleanuptime seconds (default 20), we scan the BRL
396 and locking database for entries to cleanup. As a side effect this
397 also cleans up dead entries in the connections database (due to the
398 traversal in message_send_all()
400 Using a timer for this prevents a flood of traversals when a large
401 number of clients disconnect at the same time (perhaps due to a
405 static void cleanup_timeout_fn(struct event_context
*event_ctx
,
406 struct timed_event
*te
,
410 struct smbd_parent_context
*parent
=
411 talloc_get_type_abort(private_data
,
412 struct smbd_parent_context
);
414 parent
->cleanup_te
= NULL
;
416 DEBUG(1,("Cleaning up brl and lock database after unclean shutdown\n"));
417 message_send_all(parent
->msg_ctx
, MSG_SMB_UNLOCK
, NULL
, 0, NULL
);
418 messaging_send_buf(parent
->msg_ctx
,
419 messaging_server_id(parent
->msg_ctx
),
420 MSG_SMB_BRL_VALIDATE
, NULL
, 0);
423 static void remove_child_pid(struct smbd_parent_context
*parent
,
425 bool unclean_shutdown
)
427 struct smbd_child_pid
*child
;
428 struct server_id child_id
;
430 if (unclean_shutdown
) {
431 /* a child terminated uncleanly so tickle all
432 processes to see if they can grab any of the
435 DEBUG(3,(__location__
" Unclean shutdown of pid %u\n",
437 if (parent
->cleanup_te
== NULL
) {
438 /* call the cleanup timer, but not too often */
439 int cleanup_time
= lp_parm_int(-1, "smbd", "cleanuptime", 20);
440 parent
->cleanup_te
= tevent_add_timer(parent
->ev_ctx
,
442 timeval_current_ofs(cleanup_time
, 0),
445 DEBUG(1,("Scheduled cleanup of brl and lock database after unclean shutdown\n"));
449 child_id
= pid_to_procid(pid
);
451 if (!serverid_deregister(child_id
)) {
452 DEBUG(1, ("Could not remove pid %d from serverid.tdb\n",
456 for (child
= parent
->children
; child
!= NULL
; child
= child
->next
) {
457 if (child
->pid
== pid
) {
458 struct smbd_child_pid
*tmp
= child
;
459 DLIST_REMOVE(parent
->children
, child
);
461 parent
->num_children
-= 1;
466 /* not all forked child processes are added to the children list */
467 DEBUG(2, ("Could not find child %d -- ignoring\n", (int)pid
));
470 /****************************************************************************
471 Have we reached the process limit ?
472 ****************************************************************************/
474 static bool allowable_number_of_smbd_processes(struct smbd_parent_context
*parent
)
476 int max_processes
= lp_max_smbd_processes();
481 return parent
->num_children
< max_processes
;
484 static void smbd_sig_chld_handler(struct tevent_context
*ev
,
485 struct tevent_signal
*se
,
493 struct smbd_parent_context
*parent
=
494 talloc_get_type_abort(private_data
,
495 struct smbd_parent_context
);
497 while ((pid
= sys_waitpid(-1, &status
, WNOHANG
)) > 0) {
498 bool unclean_shutdown
= False
;
500 /* If the child terminated normally, assume
501 it was an unclean shutdown unless the
504 if (WIFEXITED(status
)) {
505 unclean_shutdown
= WEXITSTATUS(status
);
507 /* If the child terminated due to a signal
508 we always assume it was unclean.
510 if (WIFSIGNALED(status
)) {
511 unclean_shutdown
= True
;
513 remove_child_pid(parent
, pid
, unclean_shutdown
);
517 static void smbd_setup_sig_chld_handler(struct smbd_parent_context
*parent
)
519 struct tevent_signal
*se
;
521 se
= tevent_add_signal(parent
->ev_ctx
,
522 parent
, /* mem_ctx */
524 smbd_sig_chld_handler
,
527 exit_server("failed to setup SIGCHLD handler");
531 static void smbd_open_socket_close_fn(struct tevent_context
*ev
,
532 struct tevent_fd
*fde
,
536 /* this might be the socket_wrapper swrap_close() */
540 static void smbd_accept_connection(struct tevent_context
*ev
,
541 struct tevent_fd
*fde
,
545 struct smbd_open_socket
*s
= talloc_get_type_abort(private_data
,
546 struct smbd_open_socket
);
547 struct messaging_context
*msg_ctx
= s
->parent
->msg_ctx
;
548 struct smbd_server_connection
*sconn
= smbd_server_conn
;
549 struct sockaddr_storage addr
;
550 socklen_t in_addrlen
= sizeof(addr
);
555 fd
= accept(s
->fd
, (struct sockaddr
*)(void *)&addr
,&in_addrlen
);
557 if (fd
== -1 && errno
== EINTR
)
561 DEBUG(0,("open_sockets_smbd: accept: %s\n",
566 if (s
->parent
->interactive
) {
567 reinit_after_fork(msg_ctx
, sconn
->ev_ctx
, true);
568 smbd_process(ev
, sconn
);
569 exit_server_cleanly("end of interactive mode");
573 if (!allowable_number_of_smbd_processes(s
->parent
)) {
580 * Generate a unique id in the parent process so that we use
581 * the global random state in the parent.
583 unique_id
= serverid_get_random_unique_id();
587 NTSTATUS status
= NT_STATUS_OK
;
593 * Can't use TALLOC_FREE here. Nulling out the argument to it
594 * would overwrite memory we've just freed.
596 talloc_free(s
->parent
);
599 set_my_unique_id(unique_id
);
601 /* Stop zombies, the parent explicitly handles
602 * them, counting worker smbds. */
605 status
= reinit_after_fork(msg_ctx
,
608 if (!NT_STATUS_IS_OK(status
)) {
609 if (NT_STATUS_EQUAL(status
,
610 NT_STATUS_TOO_MANY_OPENED_FILES
)) {
611 DEBUG(0,("child process cannot initialize "
612 "because too many files are open\n"));
615 if (lp_clustering() &&
616 NT_STATUS_EQUAL(status
,
617 NT_STATUS_INTERNAL_DB_ERROR
)) {
618 DEBUG(1,("child process cannot initialize "
619 "because connection to CTDB "
624 DEBUG(0,("reinit_after_fork() failed\n"));
625 smb_panic("reinit_after_fork() failed");
628 smbd_setup_sig_term_handler(sconn
);
629 smbd_setup_sig_hup_handler(sconn
);
631 if (!serverid_register(messaging_server_id(msg_ctx
),
632 FLAG_MSG_GENERAL
|FLAG_MSG_SMBD
634 |FLAG_MSG_PRINT_GENERAL
)) {
635 exit_server_cleanly("Could not register myself in "
639 smbd_process(ev
, sconn
);
641 exit_server_cleanly("end of child");
646 DEBUG(0,("smbd_accept_connection: fork() failed: %s\n",
650 /* The parent doesn't need this socket */
653 /* Sun May 6 18:56:14 2001 ackley@cs.unm.edu:
654 Clear the closed fd info out of server_fd --
655 and more importantly, out of client_fd in
656 util_sock.c, to avoid a possible
657 getpeername failure if we reopen the logs
658 and use %I in the filename.
663 add_child_pid(s
->parent
, pid
);
666 /* Force parent to check log size after
667 * spawning child. Fix from
668 * klausr@ITAP.Physik.Uni-Stuttgart.De. The
669 * parent smbd will log to logserver.smb. It
670 * writes only two messages for each child
671 * started/finished. But each child writes,
672 * say, 50 messages also in logserver.smb,
673 * begining with the debug_count of the
674 * parent, before the child opens its own log
675 * file logserver.client. In a worst case
676 * scenario the size of logserver.smb would be
677 * checked after about 50*50=2500 messages
680 force_check_log_size();
683 static bool smbd_open_one_socket(struct smbd_parent_context
*parent
,
684 struct tevent_context
*ev_ctx
,
685 struct messaging_context
*msg_ctx
,
686 const struct sockaddr_storage
*ifss
,
689 struct smbd_open_socket
*s
;
691 s
= talloc(parent
, struct smbd_open_socket
);
697 s
->fd
= open_socket_in(SOCK_STREAM
,
699 parent
->sockets
== NULL
? 0 : 2,
703 DEBUG(0,("smbd_open_once_socket: open_socket_in: "
704 "%s\n", strerror(errno
)));
707 * We ignore an error here, as we've done before
712 /* ready to listen */
713 set_socket_options(s
->fd
, "SO_KEEPALIVE");
714 set_socket_options(s
->fd
, lp_socket_options());
716 /* Set server socket to
717 * non-blocking for the accept. */
718 set_blocking(s
->fd
, False
);
720 if (listen(s
->fd
, SMBD_LISTEN_BACKLOG
) == -1) {
721 DEBUG(0,("open_sockets_smbd: listen: "
722 "%s\n", strerror(errno
)));
728 s
->fde
= tevent_add_fd(ev_ctx
,
730 s
->fd
, TEVENT_FD_READ
,
731 smbd_accept_connection
,
734 DEBUG(0,("open_sockets_smbd: "
735 "tevent_add_fd: %s\n",
741 tevent_fd_set_close_fn(s
->fde
, smbd_open_socket_close_fn
);
743 DLIST_ADD_END(parent
->sockets
, s
, struct smbd_open_socket
*);
748 /****************************************************************************
749 Open the socket communication.
750 ****************************************************************************/
752 static bool open_sockets_smbd(struct smbd_parent_context
*parent
,
753 struct tevent_context
*ev_ctx
,
754 struct messaging_context
*msg_ctx
,
755 const char *smb_ports
)
757 int num_interfaces
= iface_count();
760 unsigned dns_port
= 0;
767 smbd_setup_sig_chld_handler(parent
);
769 /* use a reasonable default set of ports - listing on 445 and 139 */
771 ports
= lp_smb_ports();
772 if (!ports
|| !*ports
) {
773 ports
= talloc_strdup(talloc_tos(), SMB_PORTS
);
775 ports
= talloc_strdup(talloc_tos(), ports
);
778 ports
= talloc_strdup(talloc_tos(), smb_ports
);
781 if (lp_interfaces() && lp_bind_interfaces_only()) {
782 /* We have been given an interfaces line, and been
783 told to only bind to those interfaces. Create a
784 socket per interface and bind to only these.
787 /* Now open a listen socket for each of the
789 for(i
= 0; i
< num_interfaces
; i
++) {
790 const struct sockaddr_storage
*ifss
=
791 iface_n_sockaddr_storage(i
);
796 DEBUG(0,("open_sockets_smbd: "
797 "interface %d has NULL IP address !\n",
803 next_token_talloc(talloc_tos(),&ptr
, &tok
, " \t,");) {
804 unsigned port
= atoi(tok
);
805 if (port
== 0 || port
> 0xffff) {
809 /* Keep the first port for mDNS service
816 if (!smbd_open_one_socket(parent
,
826 /* Just bind to 0.0.0.0 - accept connections
831 const char *sock_addr
= lp_socket_address();
833 const char *sock_ptr
;
835 if (strequal(sock_addr
, "0.0.0.0") ||
836 strequal(sock_addr
, "::")) {
838 sock_addr
= "::,0.0.0.0";
840 sock_addr
= "0.0.0.0";
844 for (sock_ptr
=sock_addr
;
845 next_token_talloc(talloc_tos(), &sock_ptr
, &sock_tok
, " \t,"); ) {
846 for (ptr
=ports
; next_token_talloc(talloc_tos(), &ptr
, &tok
, " \t,"); ) {
847 struct sockaddr_storage ss
;
849 unsigned port
= atoi(tok
);
850 if (port
== 0 || port
> 0xffff) {
854 /* Keep the first port for mDNS service
861 /* open an incoming socket */
862 if (!interpret_string_addr(&ss
, sock_tok
,
863 AI_NUMERICHOST
|AI_PASSIVE
)) {
867 if (!smbd_open_one_socket(parent
,
878 if (parent
->sockets
== NULL
) {
879 DEBUG(0,("open_sockets_smbd: No "
880 "sockets available to bind to.\n"));
884 /* Setup the main smbd so that we can get messages. Note that
885 do this after starting listening. This is needed as when in
886 clustered mode, ctdb won't allow us to start doing database
887 operations until it has gone thru a full startup, which
888 includes checking to see that smbd is listening. */
890 if (!serverid_register(messaging_server_id(msg_ctx
),
891 FLAG_MSG_GENERAL
|FLAG_MSG_SMBD
892 |FLAG_MSG_PRINT_GENERAL
894 DEBUG(0, ("open_sockets_smbd: Failed to register "
895 "myself in serverid.tdb\n"));
899 /* Listen to messages */
901 messaging_register(msg_ctx
, NULL
, MSG_SHUTDOWN
, msg_exit_server
);
902 messaging_register(msg_ctx
, ev_ctx
, MSG_SMB_CONF_UPDATED
,
903 smbd_parent_conf_updated
);
904 messaging_register(msg_ctx
, NULL
, MSG_SMB_STAT_CACHE_DELETE
,
905 smb_stat_cache_delete
);
906 messaging_register(msg_ctx
, NULL
, MSG_DEBUG
, smbd_msg_debug
);
907 messaging_register(msg_ctx
, ev_ctx
, MSG_PRINTER_PCAP
,
909 messaging_register(msg_ctx
, NULL
, MSG_SMB_BRL_VALIDATE
,
911 messaging_register(msg_ctx
, NULL
, MSG_SMB_FORCE_TDIS
,
912 smb_parent_force_tdis
);
914 messaging_register(msg_ctx
, NULL
,
915 ID_CACHE_FLUSH
, smbd_parent_id_cache_flush
);
916 messaging_register(msg_ctx
, NULL
,
917 ID_CACHE_DELETE
, smbd_parent_id_cache_delete
);
918 messaging_register(msg_ctx
, NULL
,
919 ID_CACHE_KILL
, smbd_parent_id_cache_kill
);
921 #ifdef CLUSTER_SUPPORT
922 if (lp_clustering()) {
923 ctdbd_register_reconfigure(messaging_ctdbd_connection());
928 messaging_register(msg_ctx
, NULL
, MSG_SMB_INJECT_FAULT
,
932 if (lp_multicast_dns_register() && (dns_port
!= 0)) {
933 #ifdef WITH_DNSSD_SUPPORT
934 smbd_setup_mdns_registration(ev_ctx
,
937 #ifdef WITH_AVAHI_SUPPORT
940 avahi_conn
= avahi_start_register(ev_ctx
,
943 if (avahi_conn
== NULL
) {
944 DEBUG(10, ("avahi_start_register failed\n"));
954 handle stdin becoming readable when we are in --foreground mode
956 static void smbd_stdin_handler(struct tevent_context
*ev
,
957 struct tevent_fd
*fde
,
962 if (read(0, &c
, 1) != 1) {
963 /* we have reached EOF on stdin, which means the
964 parent has exited. Shutdown the server */
965 exit_server_cleanly("EOF on stdin");
969 static void smbd_parent_loop(struct tevent_context
*ev_ctx
,
970 struct smbd_parent_context
*parent
)
972 /* now accept incoming connections - forking a new process
973 for each incoming connection */
974 DEBUG(2,("waiting for connections\n"));
977 TALLOC_CTX
*frame
= talloc_stackframe();
979 ret
= tevent_loop_once(ev_ctx
);
981 exit_server_cleanly("tevent_loop_once() error");
987 /* NOTREACHED return True; */
991 /****************************************************************************
992 Initialise connect, service and file structs.
993 ****************************************************************************/
995 static bool init_structs(void )
998 * Set the machine NETBIOS name if not already
999 * set from the config file.
1005 if (!secrets_init())
1011 static void smbd_parent_sig_term_handler(struct tevent_context
*ev
,
1012 struct tevent_signal
*se
,
1018 exit_server_cleanly("termination signal");
1021 static void smbd_parent_sig_hup_handler(struct tevent_context
*ev
,
1022 struct tevent_signal
*se
,
1028 struct smbd_parent_context
*parent
=
1029 talloc_get_type_abort(private_data
,
1030 struct smbd_parent_context
);
1032 change_to_root_user();
1033 DEBUG(1,("parent: Reloading services after SIGHUP\n"));
1034 reload_services(NULL
, NULL
, false);
1036 printing_subsystem_update(parent
->ev_ctx
, parent
->msg_ctx
, true);
1039 /****************************************************************************
1041 ****************************************************************************/
1043 /* Declare prototype for build_options() to avoid having to run it through
1044 mkproto.h. Mixing $(builddir) and $(srcdir) source files in the current
1045 prototype generation system is too complicated. */
1047 extern void build_options(bool screen
);
1049 int main(int argc
,const char *argv
[])
1051 /* shall I run as a daemon */
1052 bool is_daemon
= false;
1053 bool interactive
= false;
1055 bool no_process_group
= false;
1056 bool log_stdout
= false;
1058 char *profile_level
= NULL
;
1061 bool print_build_options
= False
;
1066 OPT_NO_PROCESS_GROUP
,
1069 struct poptOption long_options
[] = {
1071 {"daemon", 'D', POPT_ARG_NONE
, NULL
, OPT_DAEMON
, "Become a daemon (default)" },
1072 {"interactive", 'i', POPT_ARG_NONE
, NULL
, OPT_INTERACTIVE
, "Run interactive (not a daemon)"},
1073 {"foreground", 'F', POPT_ARG_NONE
, NULL
, OPT_FORK
, "Run daemon in foreground (for daemontools, etc.)" },
1074 {"no-process-group", '\0', POPT_ARG_NONE
, NULL
, OPT_NO_PROCESS_GROUP
, "Don't create a new process group" },
1075 {"log-stdout", 'S', POPT_ARG_NONE
, NULL
, OPT_LOG_STDOUT
, "Log to stdout" },
1076 {"build-options", 'b', POPT_ARG_NONE
, NULL
, 'b', "Print build options" },
1077 {"port", 'p', POPT_ARG_STRING
, &ports
, 0, "Listen on the specified ports"},
1078 {"profiling-level", 'P', POPT_ARG_STRING
, &profile_level
, 0, "Set profiling level","PROFILE_LEVEL"},
1080 POPT_COMMON_DYNCONFIG
1083 struct smbd_parent_context
*parent
= NULL
;
1086 struct tevent_context
*ev_ctx
;
1087 struct messaging_context
*msg_ctx
;
1088 struct tevent_signal
*se
;
1089 char *np_dir
= NULL
;
1092 * Do this before any other talloc operation
1094 talloc_enable_null_tracking();
1095 frame
= talloc_stackframe();
1097 setup_logging(argv
[0], DEBUG_DEFAULT_STDOUT
);
1101 smbd_init_globals();
1105 #ifdef HAVE_SET_AUTH_PARAMETERS
1106 set_auth_parameters(argc
,argv
);
1109 pc
= poptGetContext("smbd", argc
, argv
, long_options
, 0);
1110 while((opt
= poptGetNextOpt(pc
)) != -1) {
1115 case OPT_INTERACTIVE
:
1121 case OPT_NO_PROCESS_GROUP
:
1122 no_process_group
= true;
1124 case OPT_LOG_STDOUT
:
1128 print_build_options
= True
;
1131 d_fprintf(stderr
, "\nInvalid option %s: %s\n\n",
1132 poptBadOption(pc
, 0), poptStrerror(opt
));
1133 poptPrintUsage(pc
, stderr
, 0);
1137 poptFreeContext(pc
);
1145 setup_logging(argv
[0], DEBUG_STDOUT
);
1147 setup_logging(argv
[0], DEBUG_FILE
);
1150 if (print_build_options
) {
1151 build_options(True
); /* Display output to screen as well as debug */
1156 /* needed for SecureWare on SCO */
1160 set_remote_machine_name("smbd", False
);
1162 if (interactive
&& (DEBUGLEVEL
>= 9)) {
1163 talloc_enable_leak_report();
1166 if (log_stdout
&& Fork
) {
1167 DEBUG(0,("ERROR: Can't log to stdout (-S) unless daemon is in foreground (-F) or interactive (-i)\n"));
1171 /* we want to re-seed early to prevent time delays causing
1172 client problems at a later date. (tridge) */
1173 generate_random_buffer(NULL
, 0);
1175 /* get initial effective uid and gid */
1178 /* make absolutely sure we run as root - to handle cases where people
1179 are crazy enough to have it setuid */
1180 gain_root_privilege();
1181 gain_root_group_privilege();
1184 dump_core_setup("smbd", lp_logfile());
1186 /* we are never interested in SIGPIPE */
1187 BlockSignals(True
,SIGPIPE
);
1190 /* we are never interested in SIGFPE */
1191 BlockSignals(True
,SIGFPE
);
1194 #if defined(SIGUSR2)
1195 /* We are no longer interested in USR2 */
1196 BlockSignals(True
,SIGUSR2
);
1199 /* POSIX demands that signals are inherited. If the invoking process has
1200 * these signals masked, we will have problems, as we won't recieve them. */
1201 BlockSignals(False
, SIGHUP
);
1202 BlockSignals(False
, SIGUSR1
);
1203 BlockSignals(False
, SIGTERM
);
1205 /* Ensure we leave no zombies until we
1206 * correctly set up child handling below. */
1210 /* we want total control over the permissions on created files,
1211 so set our umask to 0 */
1216 DEBUG(0,("smbd version %s started.\n", samba_version_string()));
1217 DEBUGADD(0,("%s\n", COPYRIGHT_STARTUP_MESSAGE
));
1219 DEBUG(2,("uid=%d gid=%d euid=%d egid=%d\n",
1220 (int)getuid(),(int)getgid(),(int)geteuid(),(int)getegid()));
1222 /* Output the build options to the debug log */
1223 build_options(False
);
1225 if (sizeof(uint16
) < 2 || sizeof(uint32
) < 4) {
1226 DEBUG(0,("ERROR: Samba is not configured correctly for the word size on your machine\n"));
1230 if (!lp_load_initial_only(get_dyn_CONFIGFILE())) {
1231 DEBUG(0, ("error opening config file '%s'\n", get_dyn_CONFIGFILE()));
1235 /* Init the security context and global current_user */
1239 * Initialize the event context. The event context needs to be
1240 * initialized before the messaging context, cause the messaging
1241 * context holds an event context.
1242 * FIXME: This should be s3_tevent_context_init()
1244 ev_ctx
= server_event_context();
1245 if (ev_ctx
== NULL
) {
1250 * Init the messaging context
1251 * FIXME: This should only call messaging_init()
1253 msg_ctx
= server_messaging_context();
1254 if (msg_ctx
== NULL
) {
1259 * Reloading of the printers will not work here as we don't have a
1260 * server info and rpc services set up. It will be called later.
1262 if (!reload_services(NULL
, NULL
, false)) {
1266 /* ...NOTE... Log files are working from this point! */
1268 DEBUG(3,("loaded services\n"));
1273 if (!profile_setup(msg_ctx
, False
)) {
1274 DEBUG(0,("ERROR: failed to setup profiling\n"));
1277 if (profile_level
!= NULL
) {
1278 int pl
= atoi(profile_level
);
1279 struct server_id src
;
1281 DEBUG(1, ("setting profiling level: %s\n",profile_level
));
1283 set_profile_level(pl
, src
);
1287 if (!is_daemon
&& !is_a_socket(0)) {
1289 DEBUG(0,("standard input is not a socket, assuming -D option\n"));
1292 * Setting is_daemon here prevents us from eventually calling
1293 * the open_sockets_inetd()
1299 if (is_daemon
&& !interactive
) {
1300 DEBUG( 3, ( "Becoming a daemon.\n" ) );
1301 become_daemon(Fork
, no_process_group
, log_stdout
);
1304 set_my_unique_id(serverid_get_random_unique_id());
1308 * If we're interactive we want to set our own process group for
1309 * signal management.
1311 if (interactive
&& !no_process_group
)
1312 setpgid( (pid_t
)0, (pid_t
)0);
1315 if (!directory_exist(lp_lockdir()))
1316 mkdir(lp_lockdir(), 0755);
1318 if (!directory_exist(lp_piddir()))
1319 mkdir(lp_piddir(), 0755);
1322 pidfile_create("smbd");
1324 status
= reinit_after_fork(msg_ctx
,
1327 if (!NT_STATUS_IS_OK(status
)) {
1328 DEBUG(0,("reinit_after_fork() failed\n"));
1334 * Do not initialize the parent-child-pipe before becoming a
1335 * daemon: this is used to detect a died parent in the child
1338 status
= init_before_fork();
1339 if (!NT_STATUS_IS_OK(status
)) {
1340 DEBUG(0, ("init_before_fork failed: %s\n", nt_errstr(status
)));
1345 smbd_server_conn
->msg_ctx
= msg_ctx
;
1347 parent
= talloc_zero(ev_ctx
, struct smbd_parent_context
);
1349 exit_server("talloc(struct smbd_parent_context) failed");
1351 parent
->interactive
= interactive
;
1352 parent
->ev_ctx
= ev_ctx
;
1353 parent
->msg_ctx
= msg_ctx
;
1356 se
= tevent_add_signal(parent
->ev_ctx
,
1359 smbd_parent_sig_term_handler
,
1362 exit_server("failed to setup SIGTERM handler");
1364 se
= tevent_add_signal(parent
->ev_ctx
,
1367 smbd_parent_sig_hup_handler
,
1370 exit_server("failed to setup SIGHUP handler");
1373 /* Setup all the TDB's - including CLEAR_IF_FIRST tdb's. */
1375 if (smbd_memcache() == NULL
) {
1379 memcache_set_global(smbd_memcache());
1381 /* Initialise the password backed before the global_sam_sid
1382 to ensure that we fetch from ldap before we make a domain sid up */
1384 if(!initialize_password_db(false, ev_ctx
))
1387 if (!secrets_init()) {
1388 DEBUG(0, ("ERROR: smbd can not open secrets.tdb\n"));
1392 if (lp_server_role() == ROLE_DOMAIN_BDC
|| lp_server_role() == ROLE_DOMAIN_PDC
) {
1393 struct loadparm_context
*lp_ctx
= loadparm_init_s3(NULL
, loadparm_s3_context());
1394 if (!open_schannel_session_store(NULL
, lp_ctx
)) {
1395 DEBUG(0,("ERROR: Samba cannot open schannel store for secured NETLOGON operations.\n"));
1398 TALLOC_FREE(lp_ctx
);
1401 if(!get_global_sam_sid()) {
1402 DEBUG(0,("ERROR: Samba cannot create a SAM SID.\n"));
1406 if (!sessionid_init()) {
1410 if (!connections_init(True
))
1413 if (!locking_init())
1416 if (!messaging_tdb_parent_init(ev_ctx
)) {
1420 if (!smbd_parent_notify_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_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(smbd_server_conn
)) {
1453 DEBUG(0, ("ERROR: file_init failed\n"));
1457 /* This MUST be done before start_epmd() because otherwise
1458 * start_epmd() forks and races against dcesrv_ep_setup() to
1459 * call directory_create_or_exist() */
1460 if (!directory_create_or_exist(lp_ncalrpc_dir(), geteuid(), 0755)) {
1461 DEBUG(0, ("Failed to create pipe directory %s - %s\n",
1462 lp_ncalrpc_dir(), strerror(errno
)));
1466 np_dir
= talloc_asprintf(talloc_tos(), "%s/np", lp_ncalrpc_dir());
1468 DEBUG(0, ("%s: Out of memory\n", __location__
));
1472 if (!directory_create_or_exist(np_dir
, geteuid(), 0700)) {
1473 DEBUG(0, ("Failed to create pipe directory %s - %s\n",
1474 np_dir
, strerror(errno
)));
1478 if (is_daemon
&& !interactive
) {
1479 if (rpc_epmapper_daemon() == RPC_DAEMON_FORK
) {
1480 start_epmd(ev_ctx
, msg_ctx
);
1484 /* only start other daemons if we are running as a daemon
1485 * -- bad things will happen if smbd is launched via inetd
1486 * and we fork a copy of ourselves here */
1487 if (is_daemon
&& !interactive
) {
1489 if (rpc_lsasd_daemon() == RPC_DAEMON_FORK
) {
1490 start_lsasd(ev_ctx
, msg_ctx
);
1493 if (!lp__disable_spoolss() &&
1494 (rpc_spoolss_daemon() != RPC_DAEMON_DISABLED
)) {
1495 bool bgq
= lp_parm_bool(-1, "smbd", "backgroundqueue", true);
1497 if (!printing_subsystem_init(ev_ctx
, msg_ctx
, true, bgq
)) {
1501 } else if (!lp__disable_spoolss() &&
1502 (rpc_spoolss_daemon() != RPC_DAEMON_DISABLED
)) {
1503 if (!printing_subsystem_init(ev_ctx
, msg_ctx
, false, false)) {
1508 if (!dcesrv_ep_setup(ev_ctx
, msg_ctx
)) {
1516 /* Started from inetd. fd 0 is the socket. */
1517 /* We will abort gracefully when the client or remote system
1519 smbd_server_conn
->sock
= dup(0);
1521 /* close stdin, stdout (if not logging to it), but not stderr */
1522 close_low_fds(true, !debug_get_output_is_stdout(), false);
1529 smbd_setup_sig_chld_handler(parent
);
1531 smbd_process(ev_ctx
, smbd_server_conn
);
1533 exit_server_cleanly(NULL
);
1537 if (!open_sockets_smbd(parent
, ev_ctx
, msg_ctx
, ports
))
1538 exit_server("open_sockets_smbd() failed");
1540 /* do a printer update now that all messaging has been set up,
1541 * before we allow clients to start connecting */
1542 printing_subsystem_update(ev_ctx
, msg_ctx
, false);
1545 /* make sure we always have a valid stackframe */
1546 frame
= talloc_stackframe();
1549 /* if we are running in the foreground then look for
1550 EOF on stdin, and exit if it happens. This allows
1551 us to die if the parent process dies
1553 tevent_add_fd(ev_ctx
, parent
, 0, TEVENT_FD_READ
, smbd_stdin_handler
, NULL
);
1556 smbd_parent_loop(ev_ctx
, parent
);
1558 exit_server_cleanly(NULL
);