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 "lib/util/server_id.h"
27 #include "popt_common.h"
28 #include "smbd/smbd.h"
29 #include "smbd/globals.h"
30 #include "registry/reg_init_full.h"
31 #include "libcli/auth/schannel.h"
33 #include "../lib/util/memcache.h"
34 #include "ctdbd_conn.h"
35 #include "util_cluster.h"
36 #include "printing/queue_process.h"
37 #include "rpc_server/rpc_service_setup.h"
38 #include "rpc_server/rpc_config.h"
43 #include "messages_ctdbd.h"
44 #include "smbprofile.h"
45 #include "lib/id_cache.h"
46 #include "lib/param/param.h"
47 #include "lib/background.h"
48 #include "lib/conn_tdb.h"
49 #include "../lib/util/pidfile.h"
50 #include "lib/smbd_shim.h"
51 #include "scavenger.h"
52 #include "locking/leases_db.h"
53 #include "smbd/notifyd/notifyd.h"
54 #include "smbd/smbd_cleanupd.h"
55 #include "lib/util/sys_rw.h"
56 #include "cleanupdb.h"
59 #ifdef CLUSTER_SUPPORT
60 #include "ctdb_protocol.h"
63 struct smbd_open_socket
;
64 struct smbd_child_pid
;
66 struct smbd_parent_context
{
69 struct tevent_context
*ev_ctx
;
70 struct messaging_context
*msg_ctx
;
72 /* the list of listening sockets */
73 struct smbd_open_socket
*sockets
;
75 /* the list of current child processes */
76 struct smbd_child_pid
*children
;
79 struct server_id cleanupd
;
80 struct server_id notifyd
;
82 struct tevent_timer
*cleanup_te
;
85 struct smbd_open_socket
{
86 struct smbd_open_socket
*prev
, *next
;
87 struct smbd_parent_context
*parent
;
89 struct tevent_fd
*fde
;
92 struct smbd_child_pid
{
93 struct smbd_child_pid
*prev
, *next
;
97 extern void start_epmd(struct tevent_context
*ev_ctx
,
98 struct messaging_context
*msg_ctx
);
100 extern void start_lsasd(struct tevent_context
*ev_ctx
,
101 struct messaging_context
*msg_ctx
);
103 extern void start_fssd(struct tevent_context
*ev_ctx
,
104 struct messaging_context
*msg_ctx
);
106 extern void start_mdssd(struct tevent_context
*ev_ctx
,
107 struct messaging_context
*msg_ctx
);
109 /*******************************************************************
110 What to do when smb.conf is updated.
111 ********************************************************************/
113 static void smbd_parent_conf_updated(struct messaging_context
*msg
,
116 struct server_id server_id
,
119 struct tevent_context
*ev_ctx
=
120 talloc_get_type_abort(private_data
, struct tevent_context
);
122 DEBUG(10,("smbd_parent_conf_updated: Got message saying smb.conf was "
123 "updated. Reloading.\n"));
124 change_to_root_user();
125 reload_services(NULL
, NULL
, false);
126 printing_subsystem_update(ev_ctx
, msg
, false);
129 /*******************************************************************
130 Delete a statcache entry.
131 ********************************************************************/
133 static void smb_stat_cache_delete(struct messaging_context
*msg
,
136 struct server_id server_id
,
139 const char *name
= (const char *)data
->data
;
140 DEBUG(10,("smb_stat_cache_delete: delete name %s\n", name
));
141 stat_cache_delete(name
);
144 /****************************************************************************
145 Send a SIGTERM to our process group.
146 *****************************************************************************/
148 static void killkids(void)
150 if(am_parent
) kill(0,SIGTERM
);
153 static void msg_exit_server(struct messaging_context
*msg
,
156 struct server_id server_id
,
159 DEBUG(3, ("got a SHUTDOWN message\n"));
160 exit_server_cleanly(NULL
);
164 static void msg_inject_fault(struct messaging_context
*msg
,
167 struct server_id src
,
171 struct server_id_buf tmp
;
173 if (data
->length
!= sizeof(sig
)) {
174 DEBUG(0, ("Process %s sent bogus signal injection request\n",
175 server_id_str_buf(src
, &tmp
)));
179 sig
= *(int *)data
->data
;
181 exit_server("internal error injected");
186 DEBUG(0, ("Process %s requested injection of signal %d (%s)\n",
187 server_id_str_buf(src
, &tmp
), sig
, strsignal(sig
)));
189 DEBUG(0, ("Process %s requested injection of signal %d\n",
190 server_id_str_buf(src
, &tmp
), sig
));
195 #endif /* DEVELOPER */
197 static 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
)) {
213 DBG_DEBUG("messaging_send(%d) failed: %s\n",
214 (int)child
->pid
, nt_errstr(status
));
220 static void smb_parent_send_to_children(struct messaging_context
*ctx
,
223 struct server_id srv_id
,
226 messaging_send_to_children(ctx
, msg_type
, msg_data
);
230 * Parent smbd process sets its own debug level first and then
231 * sends a message to all the smbd children to adjust their debug
232 * level to that of the parent.
235 static void smbd_msg_debug(struct messaging_context
*msg_ctx
,
238 struct server_id server_id
,
241 debug_message(msg_ctx
, private_data
, MSG_DEBUG
, server_id
, data
);
243 messaging_send_to_children(msg_ctx
, MSG_DEBUG
, data
);
246 static void smbd_parent_id_cache_kill(struct messaging_context
*msg_ctx
,
249 struct server_id server_id
,
252 const char *msg
= (data
&& data
->data
)
253 ? (const char *)data
->data
: "<NULL>";
254 struct id_cache_ref id
;
256 if (!id_cache_ref_parse(msg
, &id
)) {
257 DEBUG(0, ("Invalid ?ID: %s\n", msg
));
261 id_cache_delete_from_cache(&id
);
263 messaging_send_to_children(msg_ctx
, msg_type
, data
);
266 static void smbd_parent_id_cache_delete(struct messaging_context
*ctx
,
269 struct server_id srv_id
,
272 id_cache_delete_message(ctx
, data
, msg_type
, srv_id
, msg_data
);
274 messaging_send_to_children(ctx
, msg_type
, msg_data
);
277 #ifdef CLUSTER_SUPPORT
278 static int smbd_parent_ctdb_reconfigured(
279 uint32_t src_vnn
, uint32_t dst_vnn
, uint64_t dst_srvid
,
280 const uint8_t *msg
, size_t msglen
, void *private_data
)
282 struct messaging_context
*msg_ctx
= talloc_get_type_abort(
283 private_data
, struct messaging_context
);
285 DEBUG(10, ("Got %s message\n", (dst_srvid
== CTDB_SRVID_RECONFIGURE
)
286 ? "cluster reconfigure" : "SAMBA_NOTIFY"));
289 * Someone from the family died, validate our locks
293 messaging_send_buf(msg_ctx
, am_parent
->cleanupd
,
294 MSG_SMB_BRL_VALIDATE
, NULL
, 0);
301 static void add_child_pid(struct smbd_parent_context
*parent
,
304 struct smbd_child_pid
*child
;
306 child
= talloc_zero(parent
, struct smbd_child_pid
);
308 DEBUG(0, ("Could not add child struct -- malloc failed\n"));
312 DLIST_ADD(parent
->children
, child
);
313 parent
->num_children
+= 1;
316 static void smb_tell_num_children(struct messaging_context
*ctx
, void *data
,
317 uint32_t msg_type
, struct server_id srv_id
,
320 uint8_t buf
[sizeof(uint32_t)];
323 SIVAL(buf
, 0, am_parent
->num_children
);
324 messaging_send_buf(ctx
, srv_id
, MSG_SMB_NUM_CHILDREN
,
329 static void notifyd_stopped(struct tevent_req
*req
);
331 static struct tevent_req
*notifyd_req(struct messaging_context
*msg_ctx
,
332 struct tevent_context
*ev
)
334 struct tevent_req
*req
;
335 sys_notify_watch_fn sys_notify_watch
= NULL
;
336 struct sys_notify_context
*sys_notify_ctx
= NULL
;
337 struct ctdbd_connection
*ctdbd_conn
= NULL
;
339 if (lp_kernel_change_notify()) {
342 if (lp_parm_bool(-1, "notify", "inotify", true)) {
343 sys_notify_watch
= inotify_watch
;
348 if (lp_parm_bool(-1, "notify", "fam",
349 (sys_notify_watch
== NULL
))) {
350 sys_notify_watch
= fam_watch
;
355 if (sys_notify_watch
!= NULL
) {
356 sys_notify_ctx
= sys_notify_context_create(msg_ctx
, ev
);
357 if (sys_notify_ctx
== NULL
) {
362 if (lp_clustering()) {
363 ctdbd_conn
= messaging_ctdbd_connection();
366 req
= notifyd_send(msg_ctx
, ev
, msg_ctx
, ctdbd_conn
,
367 sys_notify_watch
, sys_notify_ctx
);
369 TALLOC_FREE(sys_notify_ctx
);
372 tevent_req_set_callback(req
, notifyd_stopped
, msg_ctx
);
377 static void notifyd_stopped(struct tevent_req
*req
)
381 ret
= notifyd_recv(req
);
383 DEBUG(1, ("notifyd stopped: %s\n", strerror(ret
)));
386 static bool smbd_notifyd_init(struct messaging_context
*msg
, bool interactive
,
387 struct server_id
*ppid
)
389 struct tevent_context
*ev
= messaging_tevent_context(msg
);
390 struct tevent_req
*req
;
396 req
= notifyd_req(msg
, ev
);
397 return (req
!= NULL
);
402 DEBUG(1, ("%s: fork failed: %s\n", __func__
,
408 if (am_parent
!= 0) {
409 add_child_pid(am_parent
, pid
);
411 *ppid
= pid_to_procid(pid
);
415 status
= smbd_reinit_after_fork(msg
, ev
, true, "smbd-notifyd");
416 if (!NT_STATUS_IS_OK(status
)) {
417 DEBUG(1, ("%s: reinit_after_fork failed: %s\n",
418 __func__
, nt_errstr(status
)));
422 req
= notifyd_req(msg
, ev
);
426 tevent_req_set_callback(req
, notifyd_stopped
, msg
);
428 /* Block those signals that we are not handling */
429 BlockSignals(True
, SIGHUP
);
430 BlockSignals(True
, SIGUSR1
);
432 messaging_send(msg
, pid_to_procid(getppid()), MSG_SMB_NOTIFY_STARTED
,
435 ok
= tevent_req_poll(req
, ev
);
437 DBG_WARNING("tevent_req_poll returned %s\n", strerror(errno
));
443 static void notifyd_init_trigger(struct tevent_req
*req
);
445 struct notifyd_init_state
{
447 struct tevent_context
*ev
;
448 struct messaging_context
*msg
;
449 struct server_id
*ppid
;
452 static struct tevent_req
*notifyd_init_send(struct tevent_context
*ev
,
454 struct messaging_context
*msg
,
455 struct server_id
*ppid
)
457 struct tevent_req
*req
= NULL
;
458 struct tevent_req
*subreq
= NULL
;
459 struct notifyd_init_state
*state
= NULL
;
461 req
= tevent_req_create(mem_ctx
, &state
, struct notifyd_init_state
);
466 *state
= (struct notifyd_init_state
) {
472 subreq
= tevent_wakeup_send(state
, ev
, tevent_timeval_current_ofs(1, 0));
473 if (tevent_req_nomem(subreq
, req
)) {
474 return tevent_req_post(req
, ev
);
477 tevent_req_set_callback(subreq
, notifyd_init_trigger
, req
);
481 static void notifyd_init_trigger(struct tevent_req
*subreq
)
483 struct tevent_req
*req
= tevent_req_callback_data(
484 subreq
, struct tevent_req
);
485 struct notifyd_init_state
*state
= tevent_req_data(
486 req
, struct notifyd_init_state
);
489 DBG_NOTICE("Triggering notifyd startup\n");
491 ok
= tevent_wakeup_recv(subreq
);
494 tevent_req_error(req
, ENOMEM
);
498 state
->ok
= smbd_notifyd_init(state
->msg
, false, state
->ppid
);
500 DBG_WARNING("notifyd restarted\n");
501 tevent_req_done(req
);
505 DBG_NOTICE("notifyd startup failed, rescheduling\n");
507 subreq
= tevent_wakeup_send(state
, state
->ev
,
508 tevent_timeval_current_ofs(1, 0));
509 if (tevent_req_nomem(subreq
, req
)) {
510 DBG_ERR("scheduling notifyd restart failed, giving up\n");
514 tevent_req_set_callback(subreq
, notifyd_init_trigger
, req
);
518 static bool notifyd_init_recv(struct tevent_req
*req
)
520 struct notifyd_init_state
*state
= tevent_req_data(
521 req
, struct notifyd_init_state
);
526 static void notifyd_started(struct tevent_req
*req
)
530 ok
= notifyd_init_recv(req
);
533 DBG_ERR("Failed to restart notifyd, giving up\n");
538 static void cleanupd_stopped(struct tevent_req
*req
);
540 static bool cleanupd_init(struct messaging_context
*msg
, bool interactive
,
541 struct server_id
*ppid
)
543 struct tevent_context
*ev
= messaging_tevent_context(msg
);
544 struct server_id parent_id
= messaging_server_id(msg
);
545 struct tevent_req
*req
;
555 req
= smbd_cleanupd_send(msg
, ev
, msg
, parent_id
.pid
);
556 *ppid
= messaging_server_id(msg
);
557 return (req
!= NULL
);
562 DBG_WARNING("pipe failed: %s\n", strerror(errno
));
568 DBG_WARNING("fork failed: %s\n", strerror(errno
));
577 rwret
= sys_read(up_pipe
[0], &c
, 1);
581 DBG_WARNING("sys_read failed: %s\n", strerror(errno
));
585 DBG_WARNING("cleanupd could not start\n");
589 DBG_WARNING("cleanupd returned %d\n", (int)c
);
593 DBG_DEBUG("Started cleanupd pid=%d\n", (int)pid
);
595 if (am_parent
!= NULL
) {
596 add_child_pid(am_parent
, pid
);
599 *ppid
= pid_to_procid(pid
);
605 status
= smbd_reinit_after_fork(msg
, ev
, true, "cleanupd");
606 if (!NT_STATUS_IS_OK(status
)) {
607 DBG_WARNING("reinit_after_fork failed: %s\n",
610 sys_write(up_pipe
[1], &c
, 1);
615 req
= smbd_cleanupd_send(msg
, ev
, msg
, parent_id
.pid
);
617 DBG_WARNING("smbd_cleanupd_send failed\n");
619 sys_write(up_pipe
[1], &c
, 1);
624 tevent_req_set_callback(req
, cleanupd_stopped
, msg
);
627 rwret
= sys_write(up_pipe
[1], &c
, 1);
631 DBG_WARNING("sys_write failed: %s\n", strerror(errno
));
635 DBG_WARNING("sys_write could not write result\n");
639 ok
= tevent_req_poll(req
, ev
);
641 DBG_WARNING("tevent_req_poll returned %s\n", strerror(errno
));
646 static void cleanupd_stopped(struct tevent_req
*req
)
650 status
= smbd_cleanupd_recv(req
);
651 DBG_WARNING("cleanupd stopped: %s\n", nt_errstr(status
));
654 static void cleanupd_init_trigger(struct tevent_req
*req
);
656 struct cleanup_init_state
{
658 struct tevent_context
*ev
;
659 struct messaging_context
*msg
;
660 struct server_id
*ppid
;
663 static struct tevent_req
*cleanupd_init_send(struct tevent_context
*ev
,
665 struct messaging_context
*msg
,
666 struct server_id
*ppid
)
668 struct tevent_req
*req
= NULL
;
669 struct tevent_req
*subreq
= NULL
;
670 struct cleanup_init_state
*state
= NULL
;
672 req
= tevent_req_create(mem_ctx
, &state
, struct cleanup_init_state
);
677 *state
= (struct cleanup_init_state
) {
683 subreq
= tevent_wakeup_send(state
, ev
, tevent_timeval_current_ofs(0, 0));
684 if (tevent_req_nomem(subreq
, req
)) {
685 return tevent_req_post(req
, ev
);
688 tevent_req_set_callback(subreq
, cleanupd_init_trigger
, req
);
692 static void cleanupd_init_trigger(struct tevent_req
*subreq
)
694 struct tevent_req
*req
= tevent_req_callback_data(
695 subreq
, struct tevent_req
);
696 struct cleanup_init_state
*state
= tevent_req_data(
697 req
, struct cleanup_init_state
);
700 DBG_NOTICE("Triggering cleanupd startup\n");
702 ok
= tevent_wakeup_recv(subreq
);
705 tevent_req_error(req
, ENOMEM
);
709 state
->ok
= cleanupd_init(state
->msg
, false, state
->ppid
);
711 DBG_WARNING("cleanupd restarted\n");
712 tevent_req_done(req
);
716 DBG_NOTICE("cleanupd startup failed, rescheduling\n");
718 subreq
= tevent_wakeup_send(state
, state
->ev
,
719 tevent_timeval_current_ofs(1, 0));
720 if (tevent_req_nomem(subreq
, req
)) {
721 DBG_ERR("scheduling cleanupd restart failed, giving up\n");
725 tevent_req_set_callback(subreq
, cleanupd_init_trigger
, req
);
729 static bool cleanupd_init_recv(struct tevent_req
*req
)
731 struct cleanup_init_state
*state
= tevent_req_data(
732 req
, struct cleanup_init_state
);
738 at most every smbd:cleanuptime seconds (default 20), we scan the BRL
739 and locking database for entries to cleanup. As a side effect this
740 also cleans up dead entries in the connections database (due to the
741 traversal in message_send_all()
743 Using a timer for this prevents a flood of traversals when a large
744 number of clients disconnect at the same time (perhaps due to a
748 static void cleanup_timeout_fn(struct tevent_context
*event_ctx
,
749 struct tevent_timer
*te
,
753 struct smbd_parent_context
*parent
=
754 talloc_get_type_abort(private_data
,
755 struct smbd_parent_context
);
757 parent
->cleanup_te
= NULL
;
759 messaging_send_buf(parent
->msg_ctx
, parent
->cleanupd
,
760 MSG_SMB_UNLOCK
, NULL
, 0);
763 static void cleanupd_started(struct tevent_req
*req
)
767 struct smbd_parent_context
*parent
= tevent_req_callback_data(
768 req
, struct smbd_parent_context
);
770 ok
= cleanupd_init_recv(req
);
773 DBG_ERR("Failed to restart cleanupd, giving up\n");
777 status
= messaging_send(parent
->msg_ctx
,
779 MSG_SMB_NOTIFY_CLEANUP
,
781 if (!NT_STATUS_IS_OK(status
)) {
782 DBG_ERR("messaging_send returned %s\n",
787 static void remove_child_pid(struct smbd_parent_context
*parent
,
789 bool unclean_shutdown
)
791 struct smbd_child_pid
*child
;
795 for (child
= parent
->children
; child
!= NULL
; child
= child
->next
) {
796 if (child
->pid
== pid
) {
797 struct smbd_child_pid
*tmp
= child
;
798 DLIST_REMOVE(parent
->children
, child
);
800 parent
->num_children
-= 1;
806 /* not all forked child processes are added to the children list */
807 DEBUG(2, ("Could not find child %d -- ignoring\n", (int)pid
));
811 if (pid
== procid_to_pid(&parent
->cleanupd
)) {
812 struct tevent_req
*req
;
814 server_id_set_disconnected(&parent
->cleanupd
);
816 DBG_WARNING("Restarting cleanupd\n");
817 req
= cleanupd_init_send(messaging_tevent_context(parent
->msg_ctx
),
822 DBG_ERR("Failed to restart cleanupd\n");
825 tevent_req_set_callback(req
, cleanupd_started
, parent
);
829 if (pid
== procid_to_pid(&parent
->notifyd
)) {
830 struct tevent_req
*req
;
831 struct tevent_context
*ev
= messaging_tevent_context(
834 server_id_set_disconnected(&parent
->notifyd
);
836 DBG_WARNING("Restarting notifyd\n");
837 req
= notifyd_init_send(ev
,
842 DBG_ERR("Failed to restart notifyd\n");
845 tevent_req_set_callback(req
, notifyd_started
, parent
);
849 ok
= cleanupdb_store_child(pid
, unclean_shutdown
);
851 DBG_ERR("cleanupdb_store_child failed\n");
855 if (!server_id_is_disconnected(&parent
->cleanupd
)) {
856 status
= messaging_send(parent
->msg_ctx
,
858 MSG_SMB_NOTIFY_CLEANUP
,
860 if (!NT_STATUS_IS_OK(status
)) {
861 DBG_ERR("messaging_send returned %s\n",
866 if (unclean_shutdown
) {
867 /* a child terminated uncleanly so tickle all
868 processes to see if they can grab any of the
871 DEBUG(3,(__location__
" Unclean shutdown of pid %u\n",
873 if (parent
->cleanup_te
== NULL
) {
874 /* call the cleanup timer, but not too often */
875 int cleanup_time
= lp_parm_int(-1, "smbd", "cleanuptime", 20);
876 parent
->cleanup_te
= tevent_add_timer(parent
->ev_ctx
,
878 timeval_current_ofs(cleanup_time
, 0),
881 DEBUG(1,("Scheduled cleanup of brl and lock database after unclean shutdown\n"));
886 /****************************************************************************
887 Have we reached the process limit ?
888 ****************************************************************************/
890 static bool allowable_number_of_smbd_processes(struct smbd_parent_context
*parent
)
892 int max_processes
= lp_max_smbd_processes();
897 return parent
->num_children
< max_processes
;
900 static void smbd_sig_chld_handler(struct tevent_context
*ev
,
901 struct tevent_signal
*se
,
909 struct smbd_parent_context
*parent
=
910 talloc_get_type_abort(private_data
,
911 struct smbd_parent_context
);
913 while ((pid
= waitpid(-1, &status
, WNOHANG
)) > 0) {
914 bool unclean_shutdown
= False
;
916 /* If the child terminated normally, assume
917 it was an unclean shutdown unless the
920 if (WIFEXITED(status
)) {
921 unclean_shutdown
= WEXITSTATUS(status
);
923 /* If the child terminated due to a signal
924 we always assume it was unclean.
926 if (WIFSIGNALED(status
)) {
927 unclean_shutdown
= True
;
929 remove_child_pid(parent
, pid
, unclean_shutdown
);
933 static void smbd_setup_sig_chld_handler(struct smbd_parent_context
*parent
)
935 struct tevent_signal
*se
;
937 se
= tevent_add_signal(parent
->ev_ctx
,
938 parent
, /* mem_ctx */
940 smbd_sig_chld_handler
,
943 exit_server("failed to setup SIGCHLD handler");
947 static void smbd_open_socket_close_fn(struct tevent_context
*ev
,
948 struct tevent_fd
*fde
,
952 /* this might be the socket_wrapper swrap_close() */
956 static void smbd_accept_connection(struct tevent_context
*ev
,
957 struct tevent_fd
*fde
,
961 struct smbd_open_socket
*s
= talloc_get_type_abort(private_data
,
962 struct smbd_open_socket
);
963 struct messaging_context
*msg_ctx
= s
->parent
->msg_ctx
;
964 struct sockaddr_storage addr
;
965 socklen_t in_addrlen
= sizeof(addr
);
969 fd
= accept(s
->fd
, (struct sockaddr
*)(void *)&addr
,&in_addrlen
);
970 if (fd
== -1 && errno
== EINTR
)
974 DEBUG(0,("accept: %s\n",
979 if (s
->parent
->interactive
) {
980 reinit_after_fork(msg_ctx
, ev
, true, NULL
);
981 smbd_process(ev
, msg_ctx
, fd
, true);
982 exit_server_cleanly("end of interactive mode");
986 if (!allowable_number_of_smbd_processes(s
->parent
)) {
993 NTSTATUS status
= NT_STATUS_OK
;
996 * Can't use TALLOC_FREE here. Nulling out the argument to it
997 * would overwrite memory we've just freed.
999 talloc_free(s
->parent
);
1002 /* Stop zombies, the parent explicitly handles
1003 * them, counting worker smbds. */
1006 status
= smbd_reinit_after_fork(msg_ctx
, ev
, true, NULL
);
1007 if (!NT_STATUS_IS_OK(status
)) {
1008 if (NT_STATUS_EQUAL(status
,
1009 NT_STATUS_TOO_MANY_OPENED_FILES
)) {
1010 DEBUG(0,("child process cannot initialize "
1011 "because too many files are open\n"));
1014 if (lp_clustering() &&
1016 status
, NT_STATUS_INTERNAL_DB_ERROR
) ||
1018 status
, NT_STATUS_CONNECTION_REFUSED
))) {
1019 DEBUG(1, ("child process cannot initialize "
1020 "because connection to CTDB "
1022 nt_errstr(status
)));
1026 DEBUG(0,("reinit_after_fork() failed\n"));
1027 smb_panic("reinit_after_fork() failed");
1030 smbd_process(ev
, msg_ctx
, fd
, false);
1032 exit_server_cleanly("end of child");
1037 DEBUG(0,("smbd_accept_connection: fork() failed: %s\n",
1041 /* The parent doesn't need this socket */
1044 /* Sun May 6 18:56:14 2001 ackley@cs.unm.edu:
1045 Clear the closed fd info out of server_fd --
1046 and more importantly, out of client_fd in
1047 util_sock.c, to avoid a possible
1048 getpeername failure if we reopen the logs
1049 and use %I in the filename.
1053 add_child_pid(s
->parent
, pid
);
1056 /* Force parent to check log size after
1057 * spawning child. Fix from
1058 * klausr@ITAP.Physik.Uni-Stuttgart.De. The
1059 * parent smbd will log to logserver.smb. It
1060 * writes only two messages for each child
1061 * started/finished. But each child writes,
1062 * say, 50 messages also in logserver.smb,
1063 * begining with the debug_count of the
1064 * parent, before the child opens its own log
1065 * file logserver.client. In a worst case
1066 * scenario the size of logserver.smb would be
1067 * checked after about 50*50=2500 messages
1070 force_check_log_size();
1073 static bool smbd_open_one_socket(struct smbd_parent_context
*parent
,
1074 struct tevent_context
*ev_ctx
,
1075 const struct sockaddr_storage
*ifss
,
1078 struct smbd_open_socket
*s
;
1080 s
= talloc(parent
, struct smbd_open_socket
);
1086 s
->fd
= open_socket_in(SOCK_STREAM
,
1088 parent
->sockets
== NULL
? 0 : 2,
1092 DEBUG(0,("smbd_open_one_socket: open_socket_in: "
1093 "%s\n", strerror(errno
)));
1096 * We ignore an error here, as we've done before
1101 /* ready to listen */
1102 set_socket_options(s
->fd
, "SO_KEEPALIVE");
1103 set_socket_options(s
->fd
, lp_socket_options());
1105 /* Set server socket to
1106 * non-blocking for the accept. */
1107 set_blocking(s
->fd
, False
);
1109 if (listen(s
->fd
, SMBD_LISTEN_BACKLOG
) == -1) {
1110 DEBUG(0,("smbd_open_one_socket: listen: "
1111 "%s\n", strerror(errno
)));
1117 s
->fde
= tevent_add_fd(ev_ctx
,
1119 s
->fd
, TEVENT_FD_READ
,
1120 smbd_accept_connection
,
1123 DEBUG(0,("smbd_open_one_socket: "
1124 "tevent_add_fd: %s\n",
1130 tevent_fd_set_close_fn(s
->fde
, smbd_open_socket_close_fn
);
1132 DLIST_ADD_END(parent
->sockets
, s
);
1137 /****************************************************************************
1138 Open the socket communication.
1139 ****************************************************************************/
1141 static bool open_sockets_smbd(struct smbd_parent_context
*parent
,
1142 struct tevent_context
*ev_ctx
,
1143 struct messaging_context
*msg_ctx
,
1144 const char *smb_ports
)
1146 int num_interfaces
= iface_count();
1149 unsigned dns_port
= 0;
1156 smbd_setup_sig_chld_handler(parent
);
1158 ports
= lp_smb_ports();
1160 /* use a reasonable default set of ports - listing on 445 and 139 */
1163 l
= str_list_make_v3(talloc_tos(), smb_ports
, NULL
);
1164 ports
= discard_const_p(const char *, l
);
1167 for (j
= 0; ports
&& ports
[j
]; j
++) {
1168 unsigned port
= atoi(ports
[j
]);
1170 if (port
== 0 || port
> 0xffff) {
1171 exit_server_cleanly("Invalid port in the config or on "
1172 "the commandline specified!");
1176 if (lp_interfaces() && lp_bind_interfaces_only()) {
1177 /* We have been given an interfaces line, and been
1178 told to only bind to those interfaces. Create a
1179 socket per interface and bind to only these.
1182 /* Now open a listen socket for each of the
1184 for(i
= 0; i
< num_interfaces
; i
++) {
1185 const struct sockaddr_storage
*ifss
=
1186 iface_n_sockaddr_storage(i
);
1188 DEBUG(0,("open_sockets_smbd: "
1189 "interface %d has NULL IP address !\n",
1194 for (j
= 0; ports
&& ports
[j
]; j
++) {
1195 unsigned port
= atoi(ports
[j
]);
1197 /* Keep the first port for mDNS service
1200 if (dns_port
== 0) {
1204 if (!smbd_open_one_socket(parent
,
1213 /* Just bind to 0.0.0.0 - accept connections
1216 const char *sock_addr
;
1218 const char *sock_ptr
;
1221 sock_addr
= "::,0.0.0.0";
1223 sock_addr
= "0.0.0.0";
1226 for (sock_ptr
=sock_addr
;
1227 next_token_talloc(talloc_tos(), &sock_ptr
, &sock_tok
, " \t,"); ) {
1228 for (j
= 0; ports
&& ports
[j
]; j
++) {
1229 struct sockaddr_storage ss
;
1230 unsigned port
= atoi(ports
[j
]);
1232 /* Keep the first port for mDNS service
1235 if (dns_port
== 0) {
1239 /* open an incoming socket */
1240 if (!interpret_string_addr(&ss
, sock_tok
,
1241 AI_NUMERICHOST
|AI_PASSIVE
)) {
1246 * If we fail to open any sockets
1247 * in this loop the parent-sockets == NULL
1248 * case below will prevent us from starting.
1251 (void)smbd_open_one_socket(parent
,
1259 if (parent
->sockets
== NULL
) {
1260 DEBUG(0,("open_sockets_smbd: No "
1261 "sockets available to bind to.\n"));
1265 /* Setup the main smbd so that we can get messages. Note that
1266 do this after starting listening. This is needed as when in
1267 clustered mode, ctdb won't allow us to start doing database
1268 operations until it has gone thru a full startup, which
1269 includes checking to see that smbd is listening. */
1271 if (!serverid_register(messaging_server_id(msg_ctx
),
1272 FLAG_MSG_GENERAL
|FLAG_MSG_SMBD
1273 |FLAG_MSG_PRINT_GENERAL
1274 |FLAG_MSG_DBWRAP
)) {
1275 DEBUG(0, ("open_sockets_smbd: Failed to register "
1276 "myself in serverid.tdb\n"));
1280 /* Listen to messages */
1282 messaging_register(msg_ctx
, NULL
, MSG_SHUTDOWN
, msg_exit_server
);
1283 messaging_register(msg_ctx
, ev_ctx
, MSG_SMB_CONF_UPDATED
,
1284 smbd_parent_conf_updated
);
1285 messaging_register(msg_ctx
, NULL
, MSG_SMB_STAT_CACHE_DELETE
,
1286 smb_stat_cache_delete
);
1287 messaging_register(msg_ctx
, NULL
, MSG_DEBUG
, smbd_msg_debug
);
1288 messaging_register(msg_ctx
, NULL
, MSG_SMB_FORCE_TDIS
,
1289 smb_parent_send_to_children
);
1290 messaging_register(msg_ctx
, NULL
, MSG_SMB_KILL_CLIENT_IP
,
1291 smb_parent_send_to_children
);
1292 messaging_register(msg_ctx
, NULL
, MSG_SMB_TELL_NUM_CHILDREN
,
1293 smb_tell_num_children
);
1295 messaging_register(msg_ctx
, NULL
,
1296 ID_CACHE_DELETE
, smbd_parent_id_cache_delete
);
1297 messaging_register(msg_ctx
, NULL
,
1298 ID_CACHE_KILL
, smbd_parent_id_cache_kill
);
1299 messaging_register(msg_ctx
, NULL
, MSG_SMB_NOTIFY_STARTED
,
1300 smb_parent_send_to_children
);
1302 #ifdef CLUSTER_SUPPORT
1303 if (lp_clustering()) {
1304 struct ctdbd_connection
*conn
= messaging_ctdbd_connection();
1306 register_with_ctdbd(conn
, CTDB_SRVID_RECONFIGURE
,
1307 smbd_parent_ctdb_reconfigured
, msg_ctx
);
1308 register_with_ctdbd(conn
, CTDB_SRVID_SAMBA_NOTIFY
,
1309 smbd_parent_ctdb_reconfigured
, msg_ctx
);
1314 messaging_register(msg_ctx
, NULL
, MSG_SMB_INJECT_FAULT
,
1318 if (lp_multicast_dns_register() && (dns_port
!= 0)) {
1319 #ifdef WITH_DNSSD_SUPPORT
1320 smbd_setup_mdns_registration(ev_ctx
,
1323 #ifdef WITH_AVAHI_SUPPORT
1326 avahi_conn
= avahi_start_register(ev_ctx
,
1329 if (avahi_conn
== NULL
) {
1330 DEBUG(10, ("avahi_start_register failed\n"));
1340 handle stdin becoming readable when we are in --foreground mode
1342 static void smbd_stdin_handler(struct tevent_context
*ev
,
1343 struct tevent_fd
*fde
,
1348 if (read(0, &c
, 1) != 1) {
1349 /* we have reached EOF on stdin, which means the
1350 parent has exited. Shutdown the server */
1351 exit_server_cleanly("EOF on stdin");
1355 struct smbd_parent_tevent_trace_state
{
1359 static void smbd_parent_tevent_trace_callback(enum tevent_trace_point point
,
1362 struct smbd_parent_tevent_trace_state
*state
=
1363 (struct smbd_parent_tevent_trace_state
*)private_data
;
1366 case TEVENT_TRACE_BEFORE_WAIT
:
1368 case TEVENT_TRACE_AFTER_WAIT
:
1370 case TEVENT_TRACE_BEFORE_LOOP_ONCE
:
1371 TALLOC_FREE(state
->frame
);
1372 state
->frame
= talloc_stackframe();
1374 case TEVENT_TRACE_AFTER_LOOP_ONCE
:
1375 TALLOC_FREE(state
->frame
);
1382 static void smbd_parent_loop(struct tevent_context
*ev_ctx
,
1383 struct smbd_parent_context
*parent
)
1385 struct smbd_parent_tevent_trace_state trace_state
= {
1390 tevent_set_trace_callback(ev_ctx
, smbd_parent_tevent_trace_callback
,
1393 /* now accept incoming connections - forking a new process
1394 for each incoming connection */
1395 DEBUG(2,("waiting for connections\n"));
1397 ret
= tevent_loop_wait(ev_ctx
);
1399 DEBUG(0, ("tevent_loop_wait failed: %d, %s, exiting\n",
1400 ret
, strerror(errno
)));
1403 TALLOC_FREE(trace_state
.frame
);
1405 /* NOTREACHED return True; */
1409 /****************************************************************************
1410 Initialise connect, service and file structs.
1411 ****************************************************************************/
1413 static bool init_structs(void )
1416 * Set the machine NETBIOS name if not already
1417 * set from the config file.
1423 if (!secrets_init())
1429 static void smbd_parent_sig_term_handler(struct tevent_context
*ev
,
1430 struct tevent_signal
*se
,
1436 exit_server_cleanly("termination signal");
1439 static void smbd_parent_sig_hup_handler(struct tevent_context
*ev
,
1440 struct tevent_signal
*se
,
1446 struct smbd_parent_context
*parent
=
1447 talloc_get_type_abort(private_data
,
1448 struct smbd_parent_context
);
1450 change_to_root_user();
1451 DEBUG(1,("parent: Reloading services after SIGHUP\n"));
1452 reload_services(NULL
, NULL
, false);
1454 printing_subsystem_update(parent
->ev_ctx
, parent
->msg_ctx
, true);
1457 struct smbd_claim_version_state
{
1458 TALLOC_CTX
*mem_ctx
;
1462 static void smbd_claim_version_parser(const struct g_lock_rec
*locks
,
1464 const uint8_t *data
,
1468 struct smbd_claim_version_state
*state
= private_data
;
1471 state
->version
= NULL
;
1474 if (data
[datalen
-1] != '\0') {
1475 DBG_WARNING("Invalid samba version\n");
1476 dump_data(DBGLVL_WARNING
, data
, datalen
);
1477 state
->version
= NULL
;
1480 state
->version
= talloc_strdup(state
->mem_ctx
, (const char *)data
);
1483 static NTSTATUS
smbd_claim_version(struct messaging_context
*msg
,
1484 const char *version
)
1486 const char *name
= "samba_version_string";
1487 struct smbd_claim_version_state state
;
1488 struct g_lock_ctx
*ctx
;
1491 ctx
= g_lock_ctx_init(msg
, msg
);
1493 DBG_WARNING("g_lock_ctx_init failed\n");
1494 return NT_STATUS_UNSUCCESSFUL
;
1497 status
= g_lock_lock(ctx
, name
, G_LOCK_READ
,
1498 (struct timeval
) { .tv_sec
= 60 });
1499 if (!NT_STATUS_IS_OK(status
)) {
1500 DBG_WARNING("g_lock_lock(G_LOCK_READ) failed: %s\n",
1506 state
= (struct smbd_claim_version_state
) { .mem_ctx
= ctx
};
1508 status
= g_lock_dump(ctx
, name
, smbd_claim_version_parser
, &state
);
1509 if (!NT_STATUS_IS_OK(status
) &&
1510 !NT_STATUS_EQUAL(status
, NT_STATUS_NOT_FOUND
)) {
1511 DBG_ERR("Could not read samba_version_string\n");
1512 g_lock_unlock(ctx
, name
);
1517 if ((state
.version
!= NULL
) && (strcmp(version
, state
.version
) == 0)) {
1519 * Leave the read lock for us around. Someone else already
1520 * set the version correctly
1523 return NT_STATUS_OK
;
1526 status
= g_lock_lock(ctx
, name
, G_LOCK_WRITE
,
1527 (struct timeval
) { .tv_sec
= 60 });
1528 if (!NT_STATUS_IS_OK(status
)) {
1529 DBG_WARNING("g_lock_lock(G_LOCK_WRITE) failed: %s\n",
1531 DBG_ERR("smbd %s already running, refusing to start "
1532 "version %s\n", state
.version
, version
);
1534 return NT_STATUS_SXS_VERSION_CONFLICT
;
1537 status
= g_lock_write_data(ctx
, name
, (const uint8_t *)version
,
1539 if (!NT_STATUS_IS_OK(status
)) {
1540 DBG_WARNING("g_lock_write_data failed: %s\n",
1546 status
= g_lock_lock(ctx
, name
, G_LOCK_READ
,
1547 (struct timeval
) { .tv_sec
= 60 });
1548 if (!NT_STATUS_IS_OK(status
)) {
1549 DBG_WARNING("g_lock_lock(G_LOCK_READ) failed: %s\n",
1556 * Leave "ctx" dangling so that g_lock.tdb keeps opened.
1558 return NT_STATUS_OK
;
1561 /****************************************************************************
1563 ****************************************************************************/
1565 /* Declare prototype for build_options() to avoid having to run it through
1566 mkproto.h. Mixing $(builddir) and $(srcdir) source files in the current
1567 prototype generation system is too complicated. */
1569 extern void build_options(bool screen
);
1571 int main(int argc
,const char *argv
[])
1573 /* shall I run as a daemon */
1574 bool is_daemon
= false;
1575 bool interactive
= false;
1577 bool no_process_group
= false;
1578 bool log_stdout
= false;
1580 char *profile_level
= NULL
;
1583 bool print_build_options
= False
;
1584 struct server_id main_server_id
= {0};
1589 OPT_NO_PROCESS_GROUP
,
1592 struct poptOption long_options
[] = {
1594 {"daemon", 'D', POPT_ARG_NONE
, NULL
, OPT_DAEMON
, "Become a daemon (default)" },
1595 {"interactive", 'i', POPT_ARG_NONE
, NULL
, OPT_INTERACTIVE
, "Run interactive (not a daemon)"},
1596 {"foreground", 'F', POPT_ARG_NONE
, NULL
, OPT_FORK
, "Run daemon in foreground (for daemontools, etc.)" },
1597 {"no-process-group", '\0', POPT_ARG_NONE
, NULL
, OPT_NO_PROCESS_GROUP
, "Don't create a new process group" },
1598 {"log-stdout", 'S', POPT_ARG_NONE
, NULL
, OPT_LOG_STDOUT
, "Log to stdout" },
1599 {"build-options", 'b', POPT_ARG_NONE
, NULL
, 'b', "Print build options" },
1600 {"port", 'p', POPT_ARG_STRING
, &ports
, 0, "Listen on the specified ports"},
1601 {"profiling-level", 'P', POPT_ARG_STRING
, &profile_level
, 0, "Set profiling level","PROFILE_LEVEL"},
1605 struct smbd_parent_context
*parent
= NULL
;
1608 struct tevent_context
*ev_ctx
;
1609 struct messaging_context
*msg_ctx
;
1610 struct server_id server_id
;
1611 struct tevent_signal
*se
;
1612 int profiling_level
;
1613 char *np_dir
= NULL
;
1614 static const struct smbd_shim smbd_shim_fns
=
1616 .cancel_pending_lock_requests_by_fid
= smbd_cancel_pending_lock_requests_by_fid
,
1617 .send_stat_cache_delete_message
= smbd_send_stat_cache_delete_message
,
1618 .change_to_root_user
= smbd_change_to_root_user
,
1619 .become_authenticated_pipe_user
= smbd_become_authenticated_pipe_user
,
1620 .unbecome_authenticated_pipe_user
= smbd_unbecome_authenticated_pipe_user
,
1622 .contend_level2_oplocks_begin
= smbd_contend_level2_oplocks_begin
,
1623 .contend_level2_oplocks_end
= smbd_contend_level2_oplocks_end
,
1625 .become_root
= smbd_become_root
,
1626 .unbecome_root
= smbd_unbecome_root
,
1628 .exit_server
= smbd_exit_server
,
1629 .exit_server_cleanly
= smbd_exit_server_cleanly
,
1633 * Do this before any other talloc operation
1635 talloc_enable_null_tracking();
1636 frame
= talloc_stackframe();
1638 setup_logging(argv
[0], DEBUG_DEFAULT_STDOUT
);
1642 set_smbd_shim(&smbd_shim_fns
);
1644 smbd_init_globals();
1648 #ifdef HAVE_SET_AUTH_PARAMETERS
1649 set_auth_parameters(argc
,argv
);
1652 pc
= poptGetContext("smbd", argc
, argv
, long_options
, 0);
1653 while((opt
= poptGetNextOpt(pc
)) != -1) {
1658 case OPT_INTERACTIVE
:
1664 case OPT_NO_PROCESS_GROUP
:
1665 no_process_group
= true;
1667 case OPT_LOG_STDOUT
:
1671 print_build_options
= True
;
1674 d_fprintf(stderr
, "\nInvalid option %s: %s\n\n",
1675 poptBadOption(pc
, 0), poptStrerror(opt
));
1676 poptPrintUsage(pc
, stderr
, 0);
1680 poptFreeContext(pc
);
1688 setup_logging(argv
[0], DEBUG_STDOUT
);
1690 setup_logging(argv
[0], DEBUG_FILE
);
1693 if (print_build_options
) {
1694 build_options(True
); /* Display output to screen as well as debug */
1699 /* needed for SecureWare on SCO */
1703 set_remote_machine_name("smbd", False
);
1705 if (interactive
&& (DEBUGLEVEL
>= 9)) {
1706 talloc_enable_leak_report();
1709 if (log_stdout
&& Fork
) {
1710 DEBUG(0,("ERROR: Can't log to stdout (-S) unless daemon is in foreground (-F) or interactive (-i)\n"));
1715 * We want to die early if we can't open /dev/urandom
1717 generate_random_buffer(NULL
, 0);
1719 /* get initial effective uid and gid */
1722 /* make absolutely sure we run as root - to handle cases where people
1723 are crazy enough to have it setuid */
1724 gain_root_privilege();
1725 gain_root_group_privilege();
1728 dump_core_setup("smbd", lp_logfile(talloc_tos()));
1730 /* we are never interested in SIGPIPE */
1731 BlockSignals(True
,SIGPIPE
);
1734 /* we are never interested in SIGFPE */
1735 BlockSignals(True
,SIGFPE
);
1738 #if defined(SIGUSR2)
1739 /* We are no longer interested in USR2 */
1740 BlockSignals(True
,SIGUSR2
);
1743 /* POSIX demands that signals are inherited. If the invoking process has
1744 * these signals masked, we will have problems, as we won't recieve them. */
1745 BlockSignals(False
, SIGHUP
);
1746 BlockSignals(False
, SIGUSR1
);
1747 BlockSignals(False
, SIGTERM
);
1749 /* Ensure we leave no zombies until we
1750 * correctly set up child handling below. */
1754 /* we want total control over the permissions on created files,
1755 so set our umask to 0 */
1760 DEBUG(0,("smbd version %s started.\n", samba_version_string()));
1761 DEBUGADD(0,("%s\n", COPYRIGHT_STARTUP_MESSAGE
));
1763 DEBUG(2,("uid=%d gid=%d euid=%d egid=%d\n",
1764 (int)getuid(),(int)getgid(),(int)geteuid(),(int)getegid()));
1766 /* Output the build options to the debug log */
1767 build_options(False
);
1769 if (sizeof(uint16_t) < 2 || sizeof(uint32_t) < 4) {
1770 DEBUG(0,("ERROR: Samba is not configured correctly for the word size on your machine\n"));
1774 if (!lp_load_initial_only(get_dyn_CONFIGFILE())) {
1775 DEBUG(0, ("error opening config file '%s'\n", get_dyn_CONFIGFILE()));
1779 if (!cluster_probe_ok()) {
1783 /* Init the security context and global current_user */
1787 * Initialize the event context. The event context needs to be
1788 * initialized before the messaging context, cause the messaging
1789 * context holds an event context.
1791 ev_ctx
= server_event_context();
1792 if (ev_ctx
== NULL
) {
1797 * Init the messaging context
1798 * FIXME: This should only call messaging_init()
1800 msg_ctx
= server_messaging_context();
1801 if (msg_ctx
== NULL
) {
1806 * Reloading of the printers will not work here as we don't have a
1807 * server info and rpc services set up. It will be called later.
1809 if (!reload_services(NULL
, NULL
, false)) {
1813 if (lp_server_role() == ROLE_ACTIVE_DIRECTORY_DC
1814 && !lp_parm_bool(-1, "server role check", "inhibit", false)) {
1815 DEBUG(0, ("server role = 'active directory domain controller' not compatible with running smbd standalone. \n"));
1816 DEBUGADD(0, ("You should start 'samba' instead, and it will control starting smbd if required\n"));
1820 /* ...NOTE... Log files are working from this point! */
1822 DEBUG(3,("loaded services\n"));
1826 if (!profile_setup(msg_ctx
, False
)) {
1827 DEBUG(0,("ERROR: failed to setup profiling\n"));
1831 if (profile_level
!= NULL
) {
1832 profiling_level
= atoi(profile_level
);
1834 profiling_level
= lp_smbd_profiling_level();
1836 main_server_id
= messaging_server_id(msg_ctx
);
1837 set_profile_level(profiling_level
, &main_server_id
);
1839 if (!is_daemon
&& !is_a_socket(0)) {
1841 DEBUG(3, ("Standard input is not a socket, "
1842 "assuming -D option\n"));
1846 * Setting is_daemon here prevents us from eventually calling
1847 * the open_sockets_inetd()
1853 if (is_daemon
&& !interactive
) {
1854 DEBUG(3, ("Becoming a daemon.\n"));
1855 become_daemon(Fork
, no_process_group
, log_stdout
);
1860 * If we're interactive we want to set our own process group for
1861 * signal management.
1863 if (interactive
&& !no_process_group
)
1864 setpgid( (pid_t
)0, (pid_t
)0);
1867 if (!directory_exist(lp_lock_directory()))
1868 mkdir(lp_lock_directory(), 0755);
1870 if (!directory_exist(lp_pid_directory()))
1871 mkdir(lp_pid_directory(), 0755);
1874 pidfile_create(lp_pid_directory(), "smbd");
1876 status
= reinit_after_fork(msg_ctx
, ev_ctx
, false, NULL
);
1877 if (!NT_STATUS_IS_OK(status
)) {
1878 exit_daemon("reinit_after_fork() failed", map_errno_from_nt_status(status
));
1883 * Do not initialize the parent-child-pipe before becoming a
1884 * daemon: this is used to detect a died parent in the child
1887 status
= init_before_fork();
1888 if (!NT_STATUS_IS_OK(status
)) {
1889 exit_daemon(nt_errstr(status
), map_errno_from_nt_status(status
));
1893 parent
= talloc_zero(ev_ctx
, struct smbd_parent_context
);
1895 exit_server("talloc(struct smbd_parent_context) failed");
1897 parent
->interactive
= interactive
;
1898 parent
->ev_ctx
= ev_ctx
;
1899 parent
->msg_ctx
= msg_ctx
;
1902 se
= tevent_add_signal(parent
->ev_ctx
,
1905 smbd_parent_sig_term_handler
,
1908 exit_server("failed to setup SIGTERM handler");
1910 se
= tevent_add_signal(parent
->ev_ctx
,
1913 smbd_parent_sig_hup_handler
,
1916 exit_server("failed to setup SIGHUP handler");
1919 /* Setup all the TDB's - including CLEAR_IF_FIRST tdb's. */
1921 if (smbd_memcache() == NULL
) {
1922 exit_daemon("no memcache available", EACCES
);
1925 memcache_set_global(smbd_memcache());
1927 /* Initialise the password backed before the global_sam_sid
1928 to ensure that we fetch from ldap before we make a domain sid up */
1930 if(!initialize_password_db(false, ev_ctx
))
1933 if (!secrets_init()) {
1934 exit_daemon("smbd can not open secrets.tdb", EACCES
);
1937 if (lp_server_role() == ROLE_DOMAIN_BDC
|| lp_server_role() == ROLE_DOMAIN_PDC
) {
1938 struct loadparm_context
*lp_ctx
= loadparm_init_s3(NULL
, loadparm_s3_helpers());
1939 if (!open_schannel_session_store(NULL
, lp_ctx
)) {
1940 exit_daemon("ERROR: Samba cannot open schannel store for secured NETLOGON operations.", EACCES
);
1942 TALLOC_FREE(lp_ctx
);
1945 if(!get_global_sam_sid()) {
1946 exit_daemon("Samba cannot create a SAM SID", EACCES
);
1949 server_id
= messaging_server_id(msg_ctx
);
1950 status
= smbXsrv_version_global_init(&server_id
);
1951 if (!NT_STATUS_IS_OK(status
)) {
1952 exit_daemon("Samba cannot init server context", EACCES
);
1955 status
= smbXsrv_session_global_init(msg_ctx
);
1956 if (!NT_STATUS_IS_OK(status
)) {
1957 exit_daemon("Samba cannot init session context", EACCES
);
1960 status
= smbXsrv_tcon_global_init();
1961 if (!NT_STATUS_IS_OK(status
)) {
1962 exit_daemon("Samba cannot init tcon context", EACCES
);
1965 if (!locking_init())
1966 exit_daemon("Samba cannot init locking", EACCES
);
1968 if (!leases_db_init(false)) {
1969 exit_daemon("Samba cannot init leases", EACCES
);
1972 if (!smbd_notifyd_init(msg_ctx
, interactive
, &parent
->notifyd
)) {
1973 exit_daemon("Samba cannot init notification", EACCES
);
1976 if (!cleanupd_init(msg_ctx
, interactive
, &parent
->cleanupd
)) {
1977 exit_daemon("Samba cannot init the cleanupd", EACCES
);
1980 if (!messaging_parent_dgm_cleanup_init(msg_ctx
)) {
1984 if (!smbd_scavenger_init(NULL
, msg_ctx
, ev_ctx
)) {
1985 exit_daemon("Samba cannot init scavenging", EACCES
);
1988 if (!serverid_parent_init(ev_ctx
)) {
1989 exit_daemon("Samba cannot init server id", EACCES
);
1992 if (!W_ERROR_IS_OK(registry_init_full()))
1993 exit_daemon("Samba cannot init registry", EACCES
);
1995 /* Open the share_info.tdb here, so we don't have to open
1996 after the fork on every single connection. This is a small
1997 performance improvment and reduces the total number of system
1999 if (!share_info_db_init()) {
2000 exit_daemon("ERROR: failed to load share info db.", EACCES
);
2003 status
= init_system_session_info();
2004 if (!NT_STATUS_IS_OK(status
)) {
2005 DEBUG(1, ("ERROR: failed to setup system user info: %s.\n",
2006 nt_errstr(status
)));
2010 if (!init_guest_info()) {
2011 DEBUG(0,("ERROR: failed to setup guest info.\n"));
2015 if (!file_init_global()) {
2016 DEBUG(0, ("ERROR: file_init_global() failed\n"));
2019 status
= smbXsrv_open_global_init();
2020 if (!NT_STATUS_IS_OK(status
)) {
2021 exit_daemon("Samba cannot init global open", map_errno_from_nt_status(status
));
2024 if (lp_clustering() && !lp_allow_unsafe_cluster_upgrade()) {
2025 status
= smbd_claim_version(msg_ctx
, samba_version_string());
2026 if (!NT_STATUS_IS_OK(status
)) {
2027 DBG_WARNING("Could not claim version: %s\n",
2033 /* This MUST be done before start_epmd() because otherwise
2034 * start_epmd() forks and races against dcesrv_ep_setup() to
2035 * call directory_create_or_exist() */
2036 if (!directory_create_or_exist(lp_ncalrpc_dir(), 0755)) {
2037 DEBUG(0, ("Failed to create pipe directory %s - %s\n",
2038 lp_ncalrpc_dir(), strerror(errno
)));
2042 np_dir
= talloc_asprintf(talloc_tos(), "%s/np", lp_ncalrpc_dir());
2044 DEBUG(0, ("%s: Out of memory\n", __location__
));
2048 if (!directory_create_or_exist_strict(np_dir
, geteuid(), 0700)) {
2049 DEBUG(0, ("Failed to create pipe directory %s - %s\n",
2050 np_dir
, strerror(errno
)));
2054 if (is_daemon
&& !interactive
) {
2055 if (rpc_epmapper_daemon() == RPC_DAEMON_FORK
) {
2056 start_epmd(ev_ctx
, msg_ctx
);
2060 if (!dcesrv_ep_setup(ev_ctx
, msg_ctx
)) {
2061 exit_daemon("Samba cannot setup ep pipe", EACCES
);
2064 if (is_daemon
&& !interactive
) {
2065 daemon_ready("smbd");
2068 /* only start other daemons if we are running as a daemon
2069 * -- bad things will happen if smbd is launched via inetd
2070 * and we fork a copy of ourselves here */
2071 if (is_daemon
&& !interactive
) {
2073 if (rpc_lsasd_daemon() == RPC_DAEMON_FORK
) {
2074 start_lsasd(ev_ctx
, msg_ctx
);
2077 if (rpc_fss_daemon() == RPC_DAEMON_FORK
) {
2078 start_fssd(ev_ctx
, msg_ctx
);
2081 if (!lp__disable_spoolss() &&
2082 (rpc_spoolss_daemon() != RPC_DAEMON_DISABLED
)) {
2083 bool bgq
= lp_parm_bool(-1, "smbd", "backgroundqueue", true);
2085 if (!printing_subsystem_init(ev_ctx
, msg_ctx
, true, bgq
)) {
2086 exit_daemon("Samba failed to init printing subsystem", EACCES
);
2090 #ifdef WITH_SPOTLIGHT
2091 if ((rpc_mdssvc_mode() == RPC_SERVICE_MODE_EXTERNAL
) &&
2092 (rpc_mdssd_daemon() == RPC_DAEMON_FORK
)) {
2093 start_mdssd(ev_ctx
, msg_ctx
);
2096 } else if (!lp__disable_spoolss() &&
2097 (rpc_spoolss_daemon() != RPC_DAEMON_DISABLED
)) {
2098 if (!printing_subsystem_init(ev_ctx
, msg_ctx
, false, false)) {
2109 /* Started from inetd. fd 0 is the socket. */
2110 /* We will abort gracefully when the client or remote system
2114 /* close stdin, stdout (if not logging to it), but not stderr */
2115 close_low_fds(true, !debug_get_output_is_stdout(), false);
2122 smbd_setup_sig_chld_handler(parent
);
2124 smbd_process(ev_ctx
, msg_ctx
, sock
, true);
2126 exit_server_cleanly(NULL
);
2130 if (!open_sockets_smbd(parent
, ev_ctx
, msg_ctx
, ports
))
2131 exit_server("open_sockets_smbd() failed");
2133 /* do a printer update now that all messaging has been set up,
2134 * before we allow clients to start connecting */
2135 if (!lp__disable_spoolss() &&
2136 (rpc_spoolss_daemon() != RPC_DAEMON_DISABLED
)) {
2137 printing_subsystem_update(ev_ctx
, msg_ctx
, false);
2141 /* make sure we always have a valid stackframe */
2142 frame
= talloc_stackframe();
2145 /* if we are running in the foreground then look for
2146 EOF on stdin, and exit if it happens. This allows
2147 us to die if the parent process dies
2148 Only do this on a pipe or socket, no other device.
2151 if (fstat(0, &st
) != 0) {
2154 if (S_ISFIFO(st
.st_mode
) || S_ISSOCK(st
.st_mode
)) {
2155 tevent_add_fd(ev_ctx
,
2164 smbd_parent_loop(ev_ctx
, parent
);
2166 exit_server_cleanly(NULL
);