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 "util_cluster.h"
35 #include "printing/queue_process.h"
36 #include "rpc_server/rpc_service_setup.h"
37 #include "rpc_server/rpc_config.h"
42 #include "smbprofile.h"
43 #include "lib/id_cache.h"
44 #include "lib/param/param.h"
45 #include "lib/background.h"
46 #include "lib/conn_tdb.h"
47 #include "../lib/util/pidfile.h"
48 #include "lib/smbd_shim.h"
49 #include "scavenger.h"
51 struct smbd_open_socket
;
52 struct smbd_child_pid
;
54 struct smbd_parent_context
{
57 struct tevent_context
*ev_ctx
;
58 struct messaging_context
*msg_ctx
;
60 /* the list of listening sockets */
61 struct smbd_open_socket
*sockets
;
63 /* the list of current child processes */
64 struct smbd_child_pid
*children
;
67 struct tevent_timer
*cleanup_te
;
70 struct smbd_open_socket
{
71 struct smbd_open_socket
*prev
, *next
;
72 struct smbd_parent_context
*parent
;
74 struct tevent_fd
*fde
;
77 struct smbd_child_pid
{
78 struct smbd_child_pid
*prev
, *next
;
82 extern void start_epmd(struct tevent_context
*ev_ctx
,
83 struct messaging_context
*msg_ctx
);
85 extern void start_lsasd(struct tevent_context
*ev_ctx
,
86 struct messaging_context
*msg_ctx
);
89 extern int dcelogin_atmost_once
;
92 /*******************************************************************
93 What to do when smb.conf is updated.
94 ********************************************************************/
96 static void smbd_parent_conf_updated(struct messaging_context
*msg
,
99 struct server_id server_id
,
102 struct tevent_context
*ev_ctx
=
103 talloc_get_type_abort(private_data
, struct tevent_context
);
105 DEBUG(10,("smbd_parent_conf_updated: Got message saying smb.conf was "
106 "updated. Reloading.\n"));
107 change_to_root_user();
108 reload_services(NULL
, NULL
, false);
109 printing_subsystem_update(ev_ctx
, msg
, false);
112 /*******************************************************************
113 What to do when printcap is updated.
114 ********************************************************************/
116 static void smb_pcap_updated(struct messaging_context
*msg
,
119 struct server_id server_id
,
122 struct tevent_context
*ev_ctx
=
123 talloc_get_type_abort(private_data
, struct tevent_context
);
125 DEBUG(10,("Got message saying pcap was updated. Reloading.\n"));
126 change_to_root_user();
127 delete_and_reload_printers(ev_ctx
, msg
);
130 /*******************************************************************
131 Delete a statcache entry.
132 ********************************************************************/
134 static void smb_stat_cache_delete(struct messaging_context
*msg
,
137 struct server_id server_id
,
140 const char *name
= (const char *)data
->data
;
141 DEBUG(10,("smb_stat_cache_delete: delete name %s\n", name
));
142 stat_cache_delete(name
);
145 /****************************************************************************
146 Send a SIGTERM to our process group.
147 *****************************************************************************/
149 static void killkids(void)
151 if(am_parent
) kill(0,SIGTERM
);
154 static void msg_exit_server(struct messaging_context
*msg
,
157 struct server_id server_id
,
160 DEBUG(3, ("got a SHUTDOWN message\n"));
161 exit_server_cleanly(NULL
);
165 static void msg_inject_fault(struct messaging_context
*msg
,
168 struct server_id src
,
173 if (data
->length
!= sizeof(sig
)) {
174 DEBUG(0, ("Process %s sent bogus signal injection request\n",
175 procid_str_static(&src
)));
179 sig
= *(int *)data
->data
;
181 exit_server("internal error injected");
186 DEBUG(0, ("Process %s requested injection of signal %d (%s)\n",
187 procid_str_static(&src
), sig
, strsignal(sig
)));
189 DEBUG(0, ("Process %s requested injection of signal %d\n",
190 procid_str_static(&src
), sig
));
195 #endif /* DEVELOPER */
197 NTSTATUS
messaging_send_to_children(struct messaging_context
*msg_ctx
,
198 uint32_t msg_type
, DATA_BLOB
* data
)
201 struct smbd_parent_context
*parent
= am_parent
;
202 struct smbd_child_pid
*child
;
204 if (parent
== NULL
) {
205 return NT_STATUS_INTERNAL_ERROR
;
208 for (child
= parent
->children
; child
!= NULL
; child
= child
->next
) {
209 status
= messaging_send(parent
->msg_ctx
,
210 pid_to_procid(child
->pid
),
212 if (!NT_STATUS_IS_OK(status
)) {
220 * Parent smbd process sets its own debug level first and then
221 * sends a message to all the smbd children to adjust their debug
222 * level to that of the parent.
225 static void smbd_msg_debug(struct messaging_context
*msg_ctx
,
228 struct server_id server_id
,
231 debug_message(msg_ctx
, private_data
, MSG_DEBUG
, server_id
, data
);
233 messaging_send_to_children(msg_ctx
, MSG_DEBUG
, data
);
236 static void smbd_parent_id_cache_kill(struct messaging_context
*msg_ctx
,
239 struct server_id server_id
,
242 const char *msg
= (data
&& data
->data
)
243 ? (const char *)data
->data
: "<NULL>";
244 struct id_cache_ref id
;
246 if (!id_cache_ref_parse(msg
, &id
)) {
247 DEBUG(0, ("Invalid ?ID: %s\n", msg
));
251 id_cache_delete_from_cache(&id
);
253 messaging_send_to_children(msg_ctx
, msg_type
, data
);
256 static void smbd_parent_id_cache_delete(struct messaging_context
*ctx
,
259 struct server_id srv_id
,
262 id_cache_delete_message(ctx
, data
, msg_type
, srv_id
, msg_data
);
264 messaging_send_to_children(ctx
, msg_type
, msg_data
);
267 struct smbd_parent_notify_state
{
268 struct tevent_context
*ev
;
269 struct messaging_context
*msg
;
271 struct notify_context
*notify
;
274 static int smbd_parent_notify_cleanup(void *private_data
);
275 static void smbd_parent_notify_cleanup_done(struct tevent_req
*req
);
276 static void smbd_parent_notify_proxy_done(struct tevent_req
*req
);
278 static bool smbd_parent_notify_init(TALLOC_CTX
*mem_ctx
,
279 struct messaging_context
*msg
,
280 struct tevent_context
*ev
)
282 struct smbd_parent_notify_state
*state
;
283 struct tevent_req
*req
;
285 state
= talloc(mem_ctx
, struct smbd_parent_notify_state
);
291 state
->msgtype
= MSG_SMB_NOTIFY_CLEANUP
;
293 state
->notify
= notify_init(state
, msg
, ev
);
294 if (state
->notify
== NULL
) {
297 req
= background_job_send(
298 state
, state
->ev
, state
->msg
, &state
->msgtype
, 1,
299 lp_parm_int(-1, "smbd", "notify cleanup interval", 60),
300 smbd_parent_notify_cleanup
, state
->notify
);
304 tevent_req_set_callback(req
, smbd_parent_notify_cleanup_done
, state
);
306 if (!lp_clustering()) {
310 req
= notify_cluster_proxy_send(state
, ev
, state
->notify
);
314 tevent_req_set_callback(req
, smbd_parent_notify_proxy_done
, state
);
322 static int smbd_parent_notify_cleanup(void *private_data
)
324 struct notify_context
*notify
= talloc_get_type_abort(
325 private_data
, struct notify_context
);
326 notify_cleanup(notify
);
327 return lp_parm_int(-1, "smbd", "notify cleanup interval", 60);
330 static void smbd_parent_notify_cleanup_done(struct tevent_req
*req
)
332 struct smbd_parent_notify_state
*state
= tevent_req_callback_data(
333 req
, struct smbd_parent_notify_state
);
336 status
= background_job_recv(req
);
338 DEBUG(1, ("notify cleanup job ended with %s\n", nt_errstr(status
)));
341 * Provide self-healing: Whatever the error condition was, it
342 * will have printed it into log.smbd. Just retrying and
343 * spamming log.smbd once a minute should be fine.
345 req
= background_job_send(
346 state
, state
->ev
, state
->msg
, &state
->msgtype
, 1, 60,
347 smbd_parent_notify_cleanup
, state
->notify
);
349 DEBUG(1, ("background_job_send failed\n"));
352 tevent_req_set_callback(req
, smbd_parent_notify_cleanup_done
, state
);
355 static void smbd_parent_notify_proxy_done(struct tevent_req
*req
)
359 ret
= notify_cluster_proxy_recv(req
);
361 DEBUG(1, ("notify proxy job ended with %s\n", strerror(ret
)));
364 static void smb_parent_force_tdis(struct messaging_context
*ctx
,
367 struct server_id srv_id
,
370 messaging_send_to_children(ctx
, msg_type
, msg_data
);
373 static void add_child_pid(struct smbd_parent_context
*parent
,
376 struct smbd_child_pid
*child
;
378 child
= talloc_zero(parent
, struct smbd_child_pid
);
380 DEBUG(0, ("Could not add child struct -- malloc failed\n"));
384 DLIST_ADD(parent
->children
, child
);
385 parent
->num_children
+= 1;
389 at most every smbd:cleanuptime seconds (default 20), we scan the BRL
390 and locking database for entries to cleanup. As a side effect this
391 also cleans up dead entries in the connections database (due to the
392 traversal in message_send_all()
394 Using a timer for this prevents a flood of traversals when a large
395 number of clients disconnect at the same time (perhaps due to a
399 static void cleanup_timeout_fn(struct tevent_context
*event_ctx
,
400 struct tevent_timer
*te
,
404 struct smbd_parent_context
*parent
=
405 talloc_get_type_abort(private_data
,
406 struct smbd_parent_context
);
408 parent
->cleanup_te
= NULL
;
410 DEBUG(1,("Cleaning up brl and lock database after unclean shutdown\n"));
411 message_send_all(parent
->msg_ctx
, MSG_SMB_UNLOCK
, NULL
, 0, NULL
);
412 messaging_send_buf(parent
->msg_ctx
,
413 messaging_server_id(parent
->msg_ctx
),
414 MSG_SMB_BRL_VALIDATE
, NULL
, 0);
417 static void remove_child_pid(struct smbd_parent_context
*parent
,
419 bool unclean_shutdown
)
421 struct smbd_child_pid
*child
;
422 struct server_id child_id
;
424 child_id
= pid_to_procid(pid
);
426 for (child
= parent
->children
; child
!= NULL
; child
= child
->next
) {
427 if (child
->pid
== pid
) {
428 struct smbd_child_pid
*tmp
= child
;
429 DLIST_REMOVE(parent
->children
, child
);
431 parent
->num_children
-= 1;
437 /* not all forked child processes are added to the children list */
438 DEBUG(2, ("Could not find child %d -- ignoring\n", (int)pid
));
442 if (unclean_shutdown
) {
443 /* a child terminated uncleanly so tickle all
444 processes to see if they can grab any of the
447 DEBUG(3,(__location__
" Unclean shutdown of pid %u\n",
449 if (parent
->cleanup_te
== NULL
) {
450 /* call the cleanup timer, but not too often */
451 int cleanup_time
= lp_parm_int(-1, "smbd", "cleanuptime", 20);
452 parent
->cleanup_te
= tevent_add_timer(parent
->ev_ctx
,
454 timeval_current_ofs(cleanup_time
, 0),
457 DEBUG(1,("Scheduled cleanup of brl and lock database after unclean shutdown\n"));
461 if (!serverid_deregister(child_id
)) {
462 DEBUG(1, ("Could not remove pid %d from serverid.tdb\n",
467 /****************************************************************************
468 Have we reached the process limit ?
469 ****************************************************************************/
471 static bool allowable_number_of_smbd_processes(struct smbd_parent_context
*parent
)
473 int max_processes
= lp_max_smbd_processes();
478 return parent
->num_children
< max_processes
;
481 static void smbd_sig_chld_handler(struct tevent_context
*ev
,
482 struct tevent_signal
*se
,
490 struct smbd_parent_context
*parent
=
491 talloc_get_type_abort(private_data
,
492 struct smbd_parent_context
);
494 while ((pid
= sys_waitpid(-1, &status
, WNOHANG
)) > 0) {
495 bool unclean_shutdown
= False
;
497 /* If the child terminated normally, assume
498 it was an unclean shutdown unless the
501 if (WIFEXITED(status
)) {
502 unclean_shutdown
= WEXITSTATUS(status
);
504 /* If the child terminated due to a signal
505 we always assume it was unclean.
507 if (WIFSIGNALED(status
)) {
508 unclean_shutdown
= True
;
510 remove_child_pid(parent
, pid
, unclean_shutdown
);
514 static void smbd_setup_sig_chld_handler(struct smbd_parent_context
*parent
)
516 struct tevent_signal
*se
;
518 se
= tevent_add_signal(parent
->ev_ctx
,
519 parent
, /* mem_ctx */
521 smbd_sig_chld_handler
,
524 exit_server("failed to setup SIGCHLD handler");
528 static void smbd_open_socket_close_fn(struct tevent_context
*ev
,
529 struct tevent_fd
*fde
,
533 /* this might be the socket_wrapper swrap_close() */
537 static void smbd_accept_connection(struct tevent_context
*ev
,
538 struct tevent_fd
*fde
,
542 struct smbd_open_socket
*s
= talloc_get_type_abort(private_data
,
543 struct smbd_open_socket
);
544 struct messaging_context
*msg_ctx
= s
->parent
->msg_ctx
;
545 struct sockaddr_storage addr
;
546 socklen_t in_addrlen
= sizeof(addr
);
551 fd
= accept(s
->fd
, (struct sockaddr
*)(void *)&addr
,&in_addrlen
);
552 if (fd
== -1 && errno
== EINTR
)
556 DEBUG(0,("accept: %s\n",
561 if (s
->parent
->interactive
) {
562 reinit_after_fork(msg_ctx
, ev
, true);
563 smbd_process(ev
, msg_ctx
, fd
, true);
564 exit_server_cleanly("end of interactive mode");
568 if (!allowable_number_of_smbd_processes(s
->parent
)) {
574 * Generate a unique id in the parent process so that we use
575 * the global random state in the parent.
577 unique_id
= serverid_get_random_unique_id();
581 NTSTATUS status
= NT_STATUS_OK
;
587 * Can't use TALLOC_FREE here. Nulling out the argument to it
588 * would overwrite memory we've just freed.
590 talloc_free(s
->parent
);
593 set_my_unique_id(unique_id
);
595 /* Stop zombies, the parent explicitly handles
596 * them, counting worker smbds. */
599 status
= reinit_after_fork(msg_ctx
,
602 if (!NT_STATUS_IS_OK(status
)) {
603 if (NT_STATUS_EQUAL(status
,
604 NT_STATUS_TOO_MANY_OPENED_FILES
)) {
605 DEBUG(0,("child process cannot initialize "
606 "because too many files are open\n"));
609 if (lp_clustering() &&
610 NT_STATUS_EQUAL(status
,
611 NT_STATUS_INTERNAL_DB_ERROR
)) {
612 DEBUG(1,("child process cannot initialize "
613 "because connection to CTDB "
618 DEBUG(0,("reinit_after_fork() failed\n"));
619 smb_panic("reinit_after_fork() failed");
622 smbd_process(ev
, msg_ctx
, fd
, false);
624 exit_server_cleanly("end of child");
629 DEBUG(0,("smbd_accept_connection: fork() failed: %s\n",
633 /* The parent doesn't need this socket */
636 /* Sun May 6 18:56:14 2001 ackley@cs.unm.edu:
637 Clear the closed fd info out of server_fd --
638 and more importantly, out of client_fd in
639 util_sock.c, to avoid a possible
640 getpeername failure if we reopen the logs
641 and use %I in the filename.
645 add_child_pid(s
->parent
, pid
);
648 /* Force parent to check log size after
649 * spawning child. Fix from
650 * klausr@ITAP.Physik.Uni-Stuttgart.De. The
651 * parent smbd will log to logserver.smb. It
652 * writes only two messages for each child
653 * started/finished. But each child writes,
654 * say, 50 messages also in logserver.smb,
655 * begining with the debug_count of the
656 * parent, before the child opens its own log
657 * file logserver.client. In a worst case
658 * scenario the size of logserver.smb would be
659 * checked after about 50*50=2500 messages
662 force_check_log_size();
665 static bool smbd_open_one_socket(struct smbd_parent_context
*parent
,
666 struct tevent_context
*ev_ctx
,
667 const struct sockaddr_storage
*ifss
,
670 struct smbd_open_socket
*s
;
672 s
= talloc(parent
, struct smbd_open_socket
);
678 s
->fd
= open_socket_in(SOCK_STREAM
,
680 parent
->sockets
== NULL
? 0 : 2,
684 DEBUG(0,("smbd_open_once_socket: open_socket_in: "
685 "%s\n", strerror(errno
)));
688 * We ignore an error here, as we've done before
693 /* ready to listen */
694 set_socket_options(s
->fd
, "SO_KEEPALIVE");
695 set_socket_options(s
->fd
, lp_socket_options());
697 /* Set server socket to
698 * non-blocking for the accept. */
699 set_blocking(s
->fd
, False
);
701 if (listen(s
->fd
, SMBD_LISTEN_BACKLOG
) == -1) {
702 DEBUG(0,("open_sockets_smbd: listen: "
703 "%s\n", strerror(errno
)));
709 s
->fde
= tevent_add_fd(ev_ctx
,
711 s
->fd
, TEVENT_FD_READ
,
712 smbd_accept_connection
,
715 DEBUG(0,("open_sockets_smbd: "
716 "tevent_add_fd: %s\n",
722 tevent_fd_set_close_fn(s
->fde
, smbd_open_socket_close_fn
);
724 DLIST_ADD_END(parent
->sockets
, s
, struct smbd_open_socket
*);
729 /****************************************************************************
730 Open the socket communication.
731 ****************************************************************************/
733 static bool open_sockets_smbd(struct smbd_parent_context
*parent
,
734 struct tevent_context
*ev_ctx
,
735 struct messaging_context
*msg_ctx
,
736 const char *smb_ports
)
738 int num_interfaces
= iface_count();
741 unsigned dns_port
= 0;
748 smbd_setup_sig_chld_handler(parent
);
750 ports
= lp_smb_ports();
752 /* use a reasonable default set of ports - listing on 445 and 139 */
754 ports
= (const char **)str_list_make_v3(talloc_tos(), smb_ports
, NULL
);
757 for (j
= 0; ports
&& ports
[j
]; j
++) {
758 unsigned port
= atoi(ports
[j
]);
760 if (port
== 0 || port
> 0xffff) {
761 exit_server_cleanly("Invalid port in the config or on "
762 "the commandline specified!");
766 if (lp_interfaces() && lp_bind_interfaces_only()) {
767 /* We have been given an interfaces line, and been
768 told to only bind to those interfaces. Create a
769 socket per interface and bind to only these.
772 /* Now open a listen socket for each of the
774 for(i
= 0; i
< num_interfaces
; i
++) {
775 const struct sockaddr_storage
*ifss
=
776 iface_n_sockaddr_storage(i
);
778 DEBUG(0,("open_sockets_smbd: "
779 "interface %d has NULL IP address !\n",
784 for (j
= 0; ports
&& ports
[j
]; j
++) {
785 unsigned port
= atoi(ports
[j
]);
787 /* Keep the first port for mDNS service
794 if (!smbd_open_one_socket(parent
,
803 /* Just bind to 0.0.0.0 - accept connections
806 const char *sock_addr
;
808 const char *sock_ptr
;
811 sock_addr
= "::,0.0.0.0";
813 sock_addr
= "0.0.0.0";
816 for (sock_ptr
=sock_addr
;
817 next_token_talloc(talloc_tos(), &sock_ptr
, &sock_tok
, " \t,"); ) {
818 for (j
= 0; ports
&& ports
[j
]; j
++) {
819 struct sockaddr_storage ss
;
820 unsigned port
= atoi(ports
[j
]);
822 /* Keep the first port for mDNS service
829 /* open an incoming socket */
830 if (!interpret_string_addr(&ss
, sock_tok
,
831 AI_NUMERICHOST
|AI_PASSIVE
)) {
835 if (!smbd_open_one_socket(parent
,
845 if (parent
->sockets
== NULL
) {
846 DEBUG(0,("open_sockets_smbd: No "
847 "sockets available to bind to.\n"));
851 /* Setup the main smbd so that we can get messages. Note that
852 do this after starting listening. This is needed as when in
853 clustered mode, ctdb won't allow us to start doing database
854 operations until it has gone thru a full startup, which
855 includes checking to see that smbd is listening. */
857 if (!serverid_register(messaging_server_id(msg_ctx
),
858 FLAG_MSG_GENERAL
|FLAG_MSG_SMBD
859 |FLAG_MSG_PRINT_GENERAL
861 DEBUG(0, ("open_sockets_smbd: Failed to register "
862 "myself in serverid.tdb\n"));
866 /* Listen to messages */
868 messaging_register(msg_ctx
, NULL
, MSG_SHUTDOWN
, msg_exit_server
);
869 messaging_register(msg_ctx
, ev_ctx
, MSG_SMB_CONF_UPDATED
,
870 smbd_parent_conf_updated
);
871 messaging_register(msg_ctx
, NULL
, MSG_SMB_STAT_CACHE_DELETE
,
872 smb_stat_cache_delete
);
873 messaging_register(msg_ctx
, NULL
, MSG_DEBUG
, smbd_msg_debug
);
874 messaging_register(msg_ctx
, ev_ctx
, MSG_PRINTER_PCAP
,
876 messaging_register(msg_ctx
, NULL
, MSG_SMB_BRL_VALIDATE
,
878 messaging_register(msg_ctx
, NULL
, MSG_SMB_FORCE_TDIS
,
879 smb_parent_force_tdis
);
881 messaging_register(msg_ctx
, NULL
,
882 ID_CACHE_DELETE
, smbd_parent_id_cache_delete
);
883 messaging_register(msg_ctx
, NULL
,
884 ID_CACHE_KILL
, smbd_parent_id_cache_kill
);
886 #ifdef CLUSTER_SUPPORT
887 if (lp_clustering()) {
888 ctdbd_register_reconfigure(messaging_ctdbd_connection());
893 messaging_register(msg_ctx
, NULL
, MSG_SMB_INJECT_FAULT
,
897 if (lp_multicast_dns_register() && (dns_port
!= 0)) {
898 #ifdef WITH_DNSSD_SUPPORT
899 smbd_setup_mdns_registration(ev_ctx
,
902 #ifdef WITH_AVAHI_SUPPORT
905 avahi_conn
= avahi_start_register(ev_ctx
,
908 if (avahi_conn
== NULL
) {
909 DEBUG(10, ("avahi_start_register failed\n"));
919 handle stdin becoming readable when we are in --foreground mode
921 static void smbd_stdin_handler(struct tevent_context
*ev
,
922 struct tevent_fd
*fde
,
927 if (read(0, &c
, 1) != 1) {
928 /* we have reached EOF on stdin, which means the
929 parent has exited. Shutdown the server */
930 exit_server_cleanly("EOF on stdin");
934 static void smbd_parent_loop(struct tevent_context
*ev_ctx
,
935 struct smbd_parent_context
*parent
)
937 /* now accept incoming connections - forking a new process
938 for each incoming connection */
939 DEBUG(2,("waiting for connections\n"));
942 TALLOC_CTX
*frame
= talloc_stackframe();
944 ret
= tevent_loop_once(ev_ctx
);
946 exit_server_cleanly("tevent_loop_once() error");
952 /* NOTREACHED return True; */
956 /****************************************************************************
957 Initialise connect, service and file structs.
958 ****************************************************************************/
960 static bool init_structs(void )
963 * Set the machine NETBIOS name if not already
964 * set from the config file.
976 static void smbd_parent_sig_term_handler(struct tevent_context
*ev
,
977 struct tevent_signal
*se
,
983 exit_server_cleanly("termination signal");
986 static void smbd_parent_sig_hup_handler(struct tevent_context
*ev
,
987 struct tevent_signal
*se
,
993 struct smbd_parent_context
*parent
=
994 talloc_get_type_abort(private_data
,
995 struct smbd_parent_context
);
997 change_to_root_user();
998 DEBUG(1,("parent: Reloading services after SIGHUP\n"));
999 reload_services(NULL
, NULL
, false);
1001 printing_subsystem_update(parent
->ev_ctx
, parent
->msg_ctx
, true);
1004 /****************************************************************************
1006 ****************************************************************************/
1008 /* Declare prototype for build_options() to avoid having to run it through
1009 mkproto.h. Mixing $(builddir) and $(srcdir) source files in the current
1010 prototype generation system is too complicated. */
1012 extern void build_options(bool screen
);
1014 int main(int argc
,const char *argv
[])
1016 /* shall I run as a daemon */
1017 bool is_daemon
= false;
1018 bool interactive
= false;
1020 bool no_process_group
= false;
1021 bool log_stdout
= false;
1023 char *profile_level
= NULL
;
1026 bool print_build_options
= False
;
1031 OPT_NO_PROCESS_GROUP
,
1034 struct poptOption long_options
[] = {
1036 {"daemon", 'D', POPT_ARG_NONE
, NULL
, OPT_DAEMON
, "Become a daemon (default)" },
1037 {"interactive", 'i', POPT_ARG_NONE
, NULL
, OPT_INTERACTIVE
, "Run interactive (not a daemon)"},
1038 {"foreground", 'F', POPT_ARG_NONE
, NULL
, OPT_FORK
, "Run daemon in foreground (for daemontools, etc.)" },
1039 {"no-process-group", '\0', POPT_ARG_NONE
, NULL
, OPT_NO_PROCESS_GROUP
, "Don't create a new process group" },
1040 {"log-stdout", 'S', POPT_ARG_NONE
, NULL
, OPT_LOG_STDOUT
, "Log to stdout" },
1041 {"build-options", 'b', POPT_ARG_NONE
, NULL
, 'b', "Print build options" },
1042 {"port", 'p', POPT_ARG_STRING
, &ports
, 0, "Listen on the specified ports"},
1043 {"profiling-level", 'P', POPT_ARG_STRING
, &profile_level
, 0, "Set profiling level","PROFILE_LEVEL"},
1045 POPT_COMMON_DYNCONFIG
1048 struct smbd_parent_context
*parent
= NULL
;
1051 struct tevent_context
*ev_ctx
;
1052 struct messaging_context
*msg_ctx
;
1053 struct server_id server_id
;
1054 struct tevent_signal
*se
;
1055 char *np_dir
= NULL
;
1056 static const struct smbd_shim smbd_shim_fns
=
1058 .cancel_pending_lock_requests_by_fid
= smbd_cancel_pending_lock_requests_by_fid
,
1059 .send_stat_cache_delete_message
= smbd_send_stat_cache_delete_message
,
1060 .change_to_root_user
= smbd_change_to_root_user
,
1061 .become_authenticated_pipe_user
= smbd_become_authenticated_pipe_user
,
1062 .unbecome_authenticated_pipe_user
= smbd_unbecome_authenticated_pipe_user
,
1064 .contend_level2_oplocks_begin
= smbd_contend_level2_oplocks_begin
,
1065 .contend_level2_oplocks_end
= smbd_contend_level2_oplocks_end
,
1067 .become_root
= smbd_become_root
,
1068 .unbecome_root
= smbd_unbecome_root
,
1070 .exit_server
= smbd_exit_server
,
1071 .exit_server_cleanly
= smbd_exit_server_cleanly
,
1075 * Do this before any other talloc operation
1077 talloc_enable_null_tracking();
1078 frame
= talloc_stackframe();
1080 setup_logging(argv
[0], DEBUG_DEFAULT_STDOUT
);
1084 set_smbd_shim(&smbd_shim_fns
);
1086 smbd_init_globals();
1090 #ifdef HAVE_SET_AUTH_PARAMETERS
1091 set_auth_parameters(argc
,argv
);
1094 pc
= poptGetContext("smbd", argc
, argv
, long_options
, 0);
1095 while((opt
= poptGetNextOpt(pc
)) != -1) {
1100 case OPT_INTERACTIVE
:
1106 case OPT_NO_PROCESS_GROUP
:
1107 no_process_group
= true;
1109 case OPT_LOG_STDOUT
:
1113 print_build_options
= True
;
1116 d_fprintf(stderr
, "\nInvalid option %s: %s\n\n",
1117 poptBadOption(pc
, 0), poptStrerror(opt
));
1118 poptPrintUsage(pc
, stderr
, 0);
1122 poptFreeContext(pc
);
1130 setup_logging(argv
[0], DEBUG_STDOUT
);
1132 setup_logging(argv
[0], DEBUG_FILE
);
1135 if (print_build_options
) {
1136 build_options(True
); /* Display output to screen as well as debug */
1141 /* needed for SecureWare on SCO */
1145 set_remote_machine_name("smbd", False
);
1147 if (interactive
&& (DEBUGLEVEL
>= 9)) {
1148 talloc_enable_leak_report();
1151 if (log_stdout
&& Fork
) {
1152 DEBUG(0,("ERROR: Can't log to stdout (-S) unless daemon is in foreground (-F) or interactive (-i)\n"));
1156 /* we want to re-seed early to prevent time delays causing
1157 client problems at a later date. (tridge) */
1158 generate_random_buffer(NULL
, 0);
1160 /* get initial effective uid and gid */
1163 /* make absolutely sure we run as root - to handle cases where people
1164 are crazy enough to have it setuid */
1165 gain_root_privilege();
1166 gain_root_group_privilege();
1169 dump_core_setup("smbd", lp_logfile(talloc_tos()));
1171 /* we are never interested in SIGPIPE */
1172 BlockSignals(True
,SIGPIPE
);
1175 /* we are never interested in SIGFPE */
1176 BlockSignals(True
,SIGFPE
);
1179 #if defined(SIGUSR2)
1180 /* We are no longer interested in USR2 */
1181 BlockSignals(True
,SIGUSR2
);
1184 /* POSIX demands that signals are inherited. If the invoking process has
1185 * these signals masked, we will have problems, as we won't recieve them. */
1186 BlockSignals(False
, SIGHUP
);
1187 BlockSignals(False
, SIGUSR1
);
1188 BlockSignals(False
, SIGTERM
);
1190 /* Ensure we leave no zombies until we
1191 * correctly set up child handling below. */
1195 /* we want total control over the permissions on created files,
1196 so set our umask to 0 */
1201 DEBUG(0,("smbd version %s started.\n", samba_version_string()));
1202 DEBUGADD(0,("%s\n", COPYRIGHT_STARTUP_MESSAGE
));
1204 DEBUG(2,("uid=%d gid=%d euid=%d egid=%d\n",
1205 (int)getuid(),(int)getgid(),(int)geteuid(),(int)getegid()));
1207 /* Output the build options to the debug log */
1208 build_options(False
);
1210 if (sizeof(uint16
) < 2 || sizeof(uint32
) < 4) {
1211 DEBUG(0,("ERROR: Samba is not configured correctly for the word size on your machine\n"));
1215 if (!lp_load_initial_only(get_dyn_CONFIGFILE())) {
1216 DEBUG(0, ("error opening config file '%s'\n", get_dyn_CONFIGFILE()));
1220 if (!cluster_probe_ok()) {
1224 /* Init the security context and global current_user */
1228 * Initialize the event context. The event context needs to be
1229 * initialized before the messaging context, cause the messaging
1230 * context holds an event context.
1231 * FIXME: This should be s3_tevent_context_init()
1233 ev_ctx
= server_event_context();
1234 if (ev_ctx
== NULL
) {
1239 * Init the messaging context
1240 * FIXME: This should only call messaging_init()
1242 msg_ctx
= server_messaging_context();
1243 if (msg_ctx
== NULL
) {
1248 * Reloading of the printers will not work here as we don't have a
1249 * server info and rpc services set up. It will be called later.
1251 if (!reload_services(NULL
, NULL
, false)) {
1255 if (lp_server_role() == ROLE_ACTIVE_DIRECTORY_DC
1256 && !lp_parm_bool(-1, "server role check", "inhibit", false)) {
1257 DEBUG(0, ("server role = 'active directory domain controller' not compatible with running smbd standalone. \n"));
1258 DEBUGADD(0, ("You should start 'samba' instead, and it will control starting smbd if required\n"));
1262 /* ...NOTE... Log files are working from this point! */
1264 DEBUG(3,("loaded services\n"));
1269 if (!profile_setup(msg_ctx
, False
)) {
1270 DEBUG(0,("ERROR: failed to setup profiling\n"));
1273 if (profile_level
!= NULL
) {
1274 int pl
= atoi(profile_level
);
1275 struct server_id src
;
1277 DEBUG(1, ("setting profiling level: %s\n",profile_level
));
1279 set_profile_level(pl
, src
);
1283 if (!is_daemon
&& !is_a_socket(0)) {
1285 DEBUG(0,("standard input is not a socket, assuming -D option\n"));
1288 * Setting is_daemon here prevents us from eventually calling
1289 * the open_sockets_inetd()
1295 if (is_daemon
&& !interactive
) {
1296 DEBUG( 3, ( "Becoming a daemon.\n" ) );
1297 become_daemon(Fork
, no_process_group
, log_stdout
);
1300 set_my_unique_id(serverid_get_random_unique_id());
1304 * If we're interactive we want to set our own process group for
1305 * signal management.
1307 if (interactive
&& !no_process_group
)
1308 setpgid( (pid_t
)0, (pid_t
)0);
1311 if (!directory_exist(lp_lockdir()))
1312 mkdir(lp_lockdir(), 0755);
1314 if (!directory_exist(lp_piddir()))
1315 mkdir(lp_piddir(), 0755);
1318 pidfile_create(lp_piddir(), "smbd");
1320 status
= reinit_after_fork(msg_ctx
,
1323 if (!NT_STATUS_IS_OK(status
)) {
1324 DEBUG(0,("reinit_after_fork() failed\n"));
1330 * Do not initialize the parent-child-pipe before becoming a
1331 * daemon: this is used to detect a died parent in the child
1334 status
= init_before_fork();
1335 if (!NT_STATUS_IS_OK(status
)) {
1336 DEBUG(0, ("init_before_fork failed: %s\n", nt_errstr(status
)));
1341 parent
= talloc_zero(ev_ctx
, struct smbd_parent_context
);
1343 exit_server("talloc(struct smbd_parent_context) failed");
1345 parent
->interactive
= interactive
;
1346 parent
->ev_ctx
= ev_ctx
;
1347 parent
->msg_ctx
= msg_ctx
;
1350 se
= tevent_add_signal(parent
->ev_ctx
,
1353 smbd_parent_sig_term_handler
,
1356 exit_server("failed to setup SIGTERM handler");
1358 se
= tevent_add_signal(parent
->ev_ctx
,
1361 smbd_parent_sig_hup_handler
,
1364 exit_server("failed to setup SIGHUP handler");
1367 /* Setup all the TDB's - including CLEAR_IF_FIRST tdb's. */
1369 if (smbd_memcache() == NULL
) {
1373 memcache_set_global(smbd_memcache());
1375 /* Initialise the password backed before the global_sam_sid
1376 to ensure that we fetch from ldap before we make a domain sid up */
1378 if(!initialize_password_db(false, ev_ctx
))
1381 if (!secrets_init()) {
1382 DEBUG(0, ("ERROR: smbd can not open secrets.tdb\n"));
1386 if (lp_server_role() == ROLE_DOMAIN_BDC
|| lp_server_role() == ROLE_DOMAIN_PDC
) {
1387 struct loadparm_context
*lp_ctx
= loadparm_init_s3(NULL
, loadparm_s3_helpers());
1388 if (!open_schannel_session_store(NULL
, lp_ctx
)) {
1389 DEBUG(0,("ERROR: Samba cannot open schannel store for secured NETLOGON operations.\n"));
1392 TALLOC_FREE(lp_ctx
);
1395 if(!get_global_sam_sid()) {
1396 DEBUG(0,("ERROR: Samba cannot create a SAM SID.\n"));
1400 server_id
= messaging_server_id(msg_ctx
);
1401 status
= smbXsrv_version_global_init(&server_id
);
1402 if (!NT_STATUS_IS_OK(status
)) {
1406 status
= smbXsrv_session_global_init();
1407 if (!NT_STATUS_IS_OK(status
)) {
1411 status
= smbXsrv_tcon_global_init();
1412 if (!NT_STATUS_IS_OK(status
)) {
1416 if (!locking_init())
1419 if (!messaging_tdb_parent_init(ev_ctx
)) {
1423 if (!smbd_parent_notify_init(NULL
, msg_ctx
, ev_ctx
)) {
1427 if (!smbd_scavenger_init(NULL
, msg_ctx
, ev_ctx
)) {
1431 if (!serverid_parent_init(ev_ctx
)) {
1435 if (!W_ERROR_IS_OK(registry_init_full()))
1438 /* Open the share_info.tdb here, so we don't have to open
1439 after the fork on every single connection. This is a small
1440 performance improvment and reduces the total number of system
1442 if (!share_info_db_init()) {
1443 DEBUG(0,("ERROR: failed to load share info db.\n"));
1447 status
= init_system_session_info();
1448 if (!NT_STATUS_IS_OK(status
)) {
1449 DEBUG(1, ("ERROR: failed to setup system user info: %s.\n",
1450 nt_errstr(status
)));
1454 if (!init_guest_info()) {
1455 DEBUG(0,("ERROR: failed to setup guest info.\n"));
1459 if (!file_init_global()) {
1460 DEBUG(0, ("ERROR: file_init_global() failed\n"));
1463 status
= smbXsrv_open_global_init();
1464 if (!NT_STATUS_IS_OK(status
)) {
1468 /* This MUST be done before start_epmd() because otherwise
1469 * start_epmd() forks and races against dcesrv_ep_setup() to
1470 * call directory_create_or_exist() */
1471 if (!directory_create_or_exist(lp_ncalrpc_dir(), geteuid(), 0755)) {
1472 DEBUG(0, ("Failed to create pipe directory %s - %s\n",
1473 lp_ncalrpc_dir(), strerror(errno
)));
1477 np_dir
= talloc_asprintf(talloc_tos(), "%s/np", lp_ncalrpc_dir());
1479 DEBUG(0, ("%s: Out of memory\n", __location__
));
1483 if (!directory_create_or_exist_strict(np_dir
, geteuid(), 0700)) {
1484 DEBUG(0, ("Failed to create pipe directory %s - %s\n",
1485 np_dir
, strerror(errno
)));
1489 if (is_daemon
&& !interactive
) {
1490 if (rpc_epmapper_daemon() == RPC_DAEMON_FORK
) {
1491 start_epmd(ev_ctx
, msg_ctx
);
1495 if (!dcesrv_ep_setup(ev_ctx
, msg_ctx
)) {
1499 /* only start other daemons if we are running as a daemon
1500 * -- bad things will happen if smbd is launched via inetd
1501 * and we fork a copy of ourselves here */
1502 if (is_daemon
&& !interactive
) {
1504 if (rpc_lsasd_daemon() == RPC_DAEMON_FORK
) {
1505 start_lsasd(ev_ctx
, msg_ctx
);
1508 if (!lp__disable_spoolss() &&
1509 (rpc_spoolss_daemon() != RPC_DAEMON_DISABLED
)) {
1510 bool bgq
= lp_parm_bool(-1, "smbd", "backgroundqueue", true);
1512 if (!printing_subsystem_init(ev_ctx
, msg_ctx
, true, bgq
)) {
1516 } else if (!lp__disable_spoolss() &&
1517 (rpc_spoolss_daemon() != RPC_DAEMON_DISABLED
)) {
1518 if (!printing_subsystem_init(ev_ctx
, msg_ctx
, false, false)) {
1529 /* Started from inetd. fd 0 is the socket. */
1530 /* We will abort gracefully when the client or remote system
1534 /* close stdin, stdout (if not logging to it), but not stderr */
1535 close_low_fds(true, !debug_get_output_is_stdout(), false);
1542 smbd_setup_sig_chld_handler(parent
);
1544 smbd_process(ev_ctx
, msg_ctx
, sock
, true);
1546 exit_server_cleanly(NULL
);
1550 if (!open_sockets_smbd(parent
, ev_ctx
, msg_ctx
, ports
))
1551 exit_server("open_sockets_smbd() failed");
1553 /* do a printer update now that all messaging has been set up,
1554 * before we allow clients to start connecting */
1555 if (!lp__disable_spoolss() &&
1556 (rpc_spoolss_daemon() != RPC_DAEMON_DISABLED
)) {
1557 printing_subsystem_update(ev_ctx
, msg_ctx
, false);
1561 /* make sure we always have a valid stackframe */
1562 frame
= talloc_stackframe();
1565 /* if we are running in the foreground then look for
1566 EOF on stdin, and exit if it happens. This allows
1567 us to die if the parent process dies
1568 Only do this on a pipe or socket, no other device.
1571 if (fstat(0, &st
) != 0) {
1574 if (S_ISFIFO(st
.st_mode
) || S_ISSOCK(st
.st_mode
)) {
1575 tevent_add_fd(ev_ctx
,
1584 smbd_parent_loop(ev_ctx
, parent
);
1586 exit_server_cleanly(NULL
);