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"
32 #include "../lib/util/memcache.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"
50 #include "locking/leases_db.h"
52 struct smbd_open_socket
;
53 struct smbd_child_pid
;
55 struct smbd_parent_context
{
58 struct tevent_context
*ev_ctx
;
59 struct messaging_context
*msg_ctx
;
61 /* the list of listening sockets */
62 struct smbd_open_socket
*sockets
;
64 /* the list of current child processes */
65 struct smbd_child_pid
*children
;
68 struct tevent_timer
*cleanup_te
;
71 struct smbd_open_socket
{
72 struct smbd_open_socket
*prev
, *next
;
73 struct smbd_parent_context
*parent
;
75 struct tevent_fd
*fde
;
78 struct smbd_child_pid
{
79 struct smbd_child_pid
*prev
, *next
;
83 extern void start_epmd(struct tevent_context
*ev_ctx
,
84 struct messaging_context
*msg_ctx
);
86 extern void start_lsasd(struct tevent_context
*ev_ctx
,
87 struct messaging_context
*msg_ctx
);
90 extern int dcelogin_atmost_once
;
93 /*******************************************************************
94 What to do when smb.conf is updated.
95 ********************************************************************/
97 static void smbd_parent_conf_updated(struct messaging_context
*msg
,
100 struct server_id server_id
,
103 struct tevent_context
*ev_ctx
=
104 talloc_get_type_abort(private_data
, struct tevent_context
);
106 DEBUG(10,("smbd_parent_conf_updated: Got message saying smb.conf was "
107 "updated. Reloading.\n"));
108 change_to_root_user();
109 reload_services(NULL
, NULL
, false);
110 printing_subsystem_update(ev_ctx
, msg
, false);
113 /*******************************************************************
114 Delete a statcache entry.
115 ********************************************************************/
117 static void smb_stat_cache_delete(struct messaging_context
*msg
,
120 struct server_id server_id
,
123 const char *name
= (const char *)data
->data
;
124 DEBUG(10,("smb_stat_cache_delete: delete name %s\n", name
));
125 stat_cache_delete(name
);
128 /****************************************************************************
129 Send a SIGTERM to our process group.
130 *****************************************************************************/
132 static void killkids(void)
134 if(am_parent
) kill(0,SIGTERM
);
137 static void msg_exit_server(struct messaging_context
*msg
,
140 struct server_id server_id
,
143 DEBUG(3, ("got a SHUTDOWN message\n"));
144 exit_server_cleanly(NULL
);
148 static void msg_inject_fault(struct messaging_context
*msg
,
151 struct server_id src
,
156 if (data
->length
!= sizeof(sig
)) {
157 DEBUG(0, ("Process %s sent bogus signal injection request\n",
158 procid_str_static(&src
)));
162 sig
= *(int *)data
->data
;
164 exit_server("internal error injected");
169 DEBUG(0, ("Process %s requested injection of signal %d (%s)\n",
170 procid_str_static(&src
), sig
, strsignal(sig
)));
172 DEBUG(0, ("Process %s requested injection of signal %d\n",
173 procid_str_static(&src
), sig
));
178 #endif /* DEVELOPER */
180 static NTSTATUS
messaging_send_to_children(struct messaging_context
*msg_ctx
,
181 uint32_t msg_type
, DATA_BLOB
* data
)
184 struct smbd_parent_context
*parent
= am_parent
;
185 struct smbd_child_pid
*child
;
187 if (parent
== NULL
) {
188 return NT_STATUS_INTERNAL_ERROR
;
191 for (child
= parent
->children
; child
!= NULL
; child
= child
->next
) {
192 status
= messaging_send(parent
->msg_ctx
,
193 pid_to_procid(child
->pid
),
195 if (!NT_STATUS_IS_OK(status
)) {
202 static void smb_parent_send_to_children(struct messaging_context
*ctx
,
205 struct server_id srv_id
,
208 messaging_send_to_children(ctx
, msg_type
, msg_data
);
212 * Parent smbd process sets its own debug level first and then
213 * sends a message to all the smbd children to adjust their debug
214 * level to that of the parent.
217 static void smbd_msg_debug(struct messaging_context
*msg_ctx
,
220 struct server_id server_id
,
223 debug_message(msg_ctx
, private_data
, MSG_DEBUG
, server_id
, data
);
225 messaging_send_to_children(msg_ctx
, MSG_DEBUG
, data
);
228 static void smbd_parent_id_cache_kill(struct messaging_context
*msg_ctx
,
231 struct server_id server_id
,
234 const char *msg
= (data
&& data
->data
)
235 ? (const char *)data
->data
: "<NULL>";
236 struct id_cache_ref id
;
238 if (!id_cache_ref_parse(msg
, &id
)) {
239 DEBUG(0, ("Invalid ?ID: %s\n", msg
));
243 id_cache_delete_from_cache(&id
);
245 messaging_send_to_children(msg_ctx
, msg_type
, data
);
248 static void smbd_parent_id_cache_delete(struct messaging_context
*ctx
,
251 struct server_id srv_id
,
254 id_cache_delete_message(ctx
, data
, msg_type
, srv_id
, msg_data
);
256 messaging_send_to_children(ctx
, msg_type
, msg_data
);
259 struct smbd_parent_notify_state
{
260 struct tevent_context
*ev
;
261 struct messaging_context
*msg
;
263 struct notify_context
*notify
;
266 static int smbd_parent_notify_cleanup(void *private_data
);
267 static void smbd_parent_notify_cleanup_done(struct tevent_req
*req
);
268 static void smbd_parent_notify_proxy_done(struct tevent_req
*req
);
270 static bool smbd_parent_notify_init(TALLOC_CTX
*mem_ctx
,
271 struct messaging_context
*msg
,
272 struct tevent_context
*ev
)
274 struct smbd_parent_notify_state
*state
;
275 struct tevent_req
*req
;
277 state
= talloc(mem_ctx
, struct smbd_parent_notify_state
);
283 state
->msgtype
= MSG_SMB_NOTIFY_CLEANUP
;
285 state
->notify
= notify_init(state
, msg
, ev
);
286 if (state
->notify
== NULL
) {
289 req
= background_job_send(
290 state
, state
->ev
, state
->msg
, &state
->msgtype
, 1,
291 lp_parm_int(-1, "smbd", "notify cleanup interval", 60),
292 smbd_parent_notify_cleanup
, state
->notify
);
296 tevent_req_set_callback(req
, smbd_parent_notify_cleanup_done
, state
);
298 if (!lp_clustering()) {
302 req
= notify_cluster_proxy_send(state
, ev
, state
->notify
);
306 tevent_req_set_callback(req
, smbd_parent_notify_proxy_done
, state
);
314 static int smbd_parent_notify_cleanup(void *private_data
)
316 struct notify_context
*notify
= talloc_get_type_abort(
317 private_data
, struct notify_context
);
318 notify_cleanup(notify
);
319 return lp_parm_int(-1, "smbd", "notify cleanup interval", 60);
322 static void smbd_parent_notify_cleanup_done(struct tevent_req
*req
)
324 struct smbd_parent_notify_state
*state
= tevent_req_callback_data(
325 req
, struct smbd_parent_notify_state
);
328 status
= background_job_recv(req
);
330 DEBUG(1, ("notify cleanup job ended with %s\n", nt_errstr(status
)));
333 * Provide self-healing: Whatever the error condition was, it
334 * will have printed it into log.smbd. Just retrying and
335 * spamming log.smbd once a minute should be fine.
337 req
= background_job_send(
338 state
, state
->ev
, state
->msg
, &state
->msgtype
, 1, 60,
339 smbd_parent_notify_cleanup
, state
->notify
);
341 DEBUG(1, ("background_job_send failed\n"));
344 tevent_req_set_callback(req
, smbd_parent_notify_cleanup_done
, state
);
347 static void smbd_parent_notify_proxy_done(struct tevent_req
*req
)
351 ret
= notify_cluster_proxy_recv(req
);
353 DEBUG(1, ("notify proxy job ended with %s\n", strerror(ret
)));
356 static void add_child_pid(struct smbd_parent_context
*parent
,
359 struct smbd_child_pid
*child
;
361 child
= talloc_zero(parent
, struct smbd_child_pid
);
363 DEBUG(0, ("Could not add child struct -- malloc failed\n"));
367 DLIST_ADD(parent
->children
, child
);
368 parent
->num_children
+= 1;
371 static void smb_tell_num_children(struct messaging_context
*ctx
, void *data
,
372 uint32_t msg_type
, struct server_id srv_id
,
375 uint8_t buf
[sizeof(uint32_t)];
378 SIVAL(buf
, 0, am_parent
->num_children
);
379 messaging_send_buf(ctx
, srv_id
, MSG_SMB_NUM_CHILDREN
,
386 at most every smbd:cleanuptime seconds (default 20), we scan the BRL
387 and locking database for entries to cleanup. As a side effect this
388 also cleans up dead entries in the connections database (due to the
389 traversal in message_send_all()
391 Using a timer for this prevents a flood of traversals when a large
392 number of clients disconnect at the same time (perhaps due to a
396 static void cleanup_timeout_fn(struct tevent_context
*event_ctx
,
397 struct tevent_timer
*te
,
401 struct smbd_parent_context
*parent
=
402 talloc_get_type_abort(private_data
,
403 struct smbd_parent_context
);
405 parent
->cleanup_te
= NULL
;
407 DEBUG(1,("Cleaning up brl and lock database after unclean shutdown\n"));
408 message_send_all(parent
->msg_ctx
, MSG_SMB_UNLOCK
, NULL
, 0, NULL
);
409 messaging_send_buf(parent
->msg_ctx
,
410 messaging_server_id(parent
->msg_ctx
),
411 MSG_SMB_BRL_VALIDATE
, NULL
, 0);
414 static void remove_child_pid(struct smbd_parent_context
*parent
,
416 bool unclean_shutdown
)
418 struct smbd_child_pid
*child
;
419 struct server_id child_id
;
422 child_id
= pid_to_procid(pid
);
424 ret
= messaging_cleanup(parent
->msg_ctx
, pid
);
426 if ((ret
!= 0) && (ret
!= ENOENT
)) {
427 DEBUG(10, ("%s: messaging_cleanup returned %s\n",
428 __func__
, strerror(ret
)));
431 smbprofile_cleanup(pid
);
433 for (child
= parent
->children
; child
!= NULL
; child
= child
->next
) {
434 if (child
->pid
== pid
) {
435 struct smbd_child_pid
*tmp
= child
;
436 DLIST_REMOVE(parent
->children
, child
);
438 parent
->num_children
-= 1;
444 /* not all forked child processes are added to the children list */
445 DEBUG(2, ("Could not find child %d -- ignoring\n", (int)pid
));
449 if (unclean_shutdown
) {
450 /* a child terminated uncleanly so tickle all
451 processes to see if they can grab any of the
454 DEBUG(3,(__location__
" Unclean shutdown of pid %u\n",
456 if (parent
->cleanup_te
== NULL
) {
457 /* call the cleanup timer, but not too often */
458 int cleanup_time
= lp_parm_int(-1, "smbd", "cleanuptime", 20);
459 parent
->cleanup_te
= tevent_add_timer(parent
->ev_ctx
,
461 timeval_current_ofs(cleanup_time
, 0),
464 DEBUG(1,("Scheduled cleanup of brl and lock database after unclean shutdown\n"));
468 if (!serverid_deregister(child_id
)) {
469 DEBUG(1, ("Could not remove pid %d from serverid.tdb\n",
474 /****************************************************************************
475 Have we reached the process limit ?
476 ****************************************************************************/
478 static bool allowable_number_of_smbd_processes(struct smbd_parent_context
*parent
)
480 int max_processes
= lp_max_smbd_processes();
485 return parent
->num_children
< max_processes
;
488 static void smbd_sig_chld_handler(struct tevent_context
*ev
,
489 struct tevent_signal
*se
,
497 struct smbd_parent_context
*parent
=
498 talloc_get_type_abort(private_data
,
499 struct smbd_parent_context
);
501 while ((pid
= sys_waitpid(-1, &status
, WNOHANG
)) > 0) {
502 bool unclean_shutdown
= False
;
504 /* If the child terminated normally, assume
505 it was an unclean shutdown unless the
508 if (WIFEXITED(status
)) {
509 unclean_shutdown
= WEXITSTATUS(status
);
511 /* If the child terminated due to a signal
512 we always assume it was unclean.
514 if (WIFSIGNALED(status
)) {
515 unclean_shutdown
= True
;
517 remove_child_pid(parent
, pid
, unclean_shutdown
);
521 static void smbd_setup_sig_chld_handler(struct smbd_parent_context
*parent
)
523 struct tevent_signal
*se
;
525 se
= tevent_add_signal(parent
->ev_ctx
,
526 parent
, /* mem_ctx */
528 smbd_sig_chld_handler
,
531 exit_server("failed to setup SIGCHLD handler");
535 static void smbd_open_socket_close_fn(struct tevent_context
*ev
,
536 struct tevent_fd
*fde
,
540 /* this might be the socket_wrapper swrap_close() */
544 static void smbd_accept_connection(struct tevent_context
*ev
,
545 struct tevent_fd
*fde
,
549 struct smbd_open_socket
*s
= talloc_get_type_abort(private_data
,
550 struct smbd_open_socket
);
551 struct messaging_context
*msg_ctx
= s
->parent
->msg_ctx
;
552 struct sockaddr_storage addr
;
553 socklen_t in_addrlen
= sizeof(addr
);
558 fd
= accept(s
->fd
, (struct sockaddr
*)(void *)&addr
,&in_addrlen
);
559 if (fd
== -1 && errno
== EINTR
)
563 DEBUG(0,("accept: %s\n",
568 if (s
->parent
->interactive
) {
569 reinit_after_fork(msg_ctx
, ev
, true);
570 smbd_process(ev
, msg_ctx
, fd
, true);
571 exit_server_cleanly("end of interactive mode");
575 if (!allowable_number_of_smbd_processes(s
->parent
)) {
581 * Generate a unique id in the parent process so that we use
582 * the global random state in the parent.
584 unique_id
= serverid_get_random_unique_id();
588 NTSTATUS status
= NT_STATUS_OK
;
594 * Can't use TALLOC_FREE here. Nulling out the argument to it
595 * would overwrite memory we've just freed.
597 talloc_free(s
->parent
);
600 set_my_unique_id(unique_id
);
602 /* Stop zombies, the parent explicitly handles
603 * them, counting worker smbds. */
606 status
= reinit_after_fork(msg_ctx
,
609 if (!NT_STATUS_IS_OK(status
)) {
610 if (NT_STATUS_EQUAL(status
,
611 NT_STATUS_TOO_MANY_OPENED_FILES
)) {
612 DEBUG(0,("child process cannot initialize "
613 "because too many files are open\n"));
616 if (lp_clustering() &&
617 NT_STATUS_EQUAL(status
,
618 NT_STATUS_INTERNAL_DB_ERROR
)) {
619 DEBUG(1,("child process cannot initialize "
620 "because connection to CTDB "
625 DEBUG(0,("reinit_after_fork() failed\n"));
626 smb_panic("reinit_after_fork() failed");
629 smbd_process(ev
, msg_ctx
, fd
, false);
631 exit_server_cleanly("end of child");
636 DEBUG(0,("smbd_accept_connection: fork() failed: %s\n",
640 /* The parent doesn't need this socket */
643 /* Sun May 6 18:56:14 2001 ackley@cs.unm.edu:
644 Clear the closed fd info out of server_fd --
645 and more importantly, out of client_fd in
646 util_sock.c, to avoid a possible
647 getpeername failure if we reopen the logs
648 and use %I in the filename.
652 add_child_pid(s
->parent
, pid
);
655 /* Force parent to check log size after
656 * spawning child. Fix from
657 * klausr@ITAP.Physik.Uni-Stuttgart.De. The
658 * parent smbd will log to logserver.smb. It
659 * writes only two messages for each child
660 * started/finished. But each child writes,
661 * say, 50 messages also in logserver.smb,
662 * begining with the debug_count of the
663 * parent, before the child opens its own log
664 * file logserver.client. In a worst case
665 * scenario the size of logserver.smb would be
666 * checked after about 50*50=2500 messages
669 force_check_log_size();
672 static bool smbd_open_one_socket(struct smbd_parent_context
*parent
,
673 struct tevent_context
*ev_ctx
,
674 const struct sockaddr_storage
*ifss
,
677 struct smbd_open_socket
*s
;
679 s
= talloc(parent
, struct smbd_open_socket
);
685 s
->fd
= open_socket_in(SOCK_STREAM
,
687 parent
->sockets
== NULL
? 0 : 2,
691 DEBUG(0,("smbd_open_once_socket: open_socket_in: "
692 "%s\n", strerror(errno
)));
695 * We ignore an error here, as we've done before
700 /* ready to listen */
701 set_socket_options(s
->fd
, "SO_KEEPALIVE");
702 set_socket_options(s
->fd
, lp_socket_options());
704 /* Set server socket to
705 * non-blocking for the accept. */
706 set_blocking(s
->fd
, False
);
708 if (listen(s
->fd
, SMBD_LISTEN_BACKLOG
) == -1) {
709 DEBUG(0,("open_sockets_smbd: listen: "
710 "%s\n", strerror(errno
)));
716 s
->fde
= tevent_add_fd(ev_ctx
,
718 s
->fd
, TEVENT_FD_READ
,
719 smbd_accept_connection
,
722 DEBUG(0,("open_sockets_smbd: "
723 "tevent_add_fd: %s\n",
729 tevent_fd_set_close_fn(s
->fde
, smbd_open_socket_close_fn
);
731 DLIST_ADD_END(parent
->sockets
, s
, struct smbd_open_socket
*);
736 /****************************************************************************
737 Open the socket communication.
738 ****************************************************************************/
740 static bool open_sockets_smbd(struct smbd_parent_context
*parent
,
741 struct tevent_context
*ev_ctx
,
742 struct messaging_context
*msg_ctx
,
743 const char *smb_ports
)
745 int num_interfaces
= iface_count();
748 unsigned dns_port
= 0;
755 smbd_setup_sig_chld_handler(parent
);
757 ports
= lp_smb_ports();
759 /* use a reasonable default set of ports - listing on 445 and 139 */
762 l
= str_list_make_v3(talloc_tos(), smb_ports
, NULL
);
763 ports
= discard_const_p(const char *, l
);
766 for (j
= 0; ports
&& ports
[j
]; j
++) {
767 unsigned port
= atoi(ports
[j
]);
769 if (port
== 0 || port
> 0xffff) {
770 exit_server_cleanly("Invalid port in the config or on "
771 "the commandline specified!");
775 if (lp_interfaces() && lp_bind_interfaces_only()) {
776 /* We have been given an interfaces line, and been
777 told to only bind to those interfaces. Create a
778 socket per interface and bind to only these.
781 /* Now open a listen socket for each of the
783 for(i
= 0; i
< num_interfaces
; i
++) {
784 const struct sockaddr_storage
*ifss
=
785 iface_n_sockaddr_storage(i
);
787 DEBUG(0,("open_sockets_smbd: "
788 "interface %d has NULL IP address !\n",
793 for (j
= 0; ports
&& ports
[j
]; j
++) {
794 unsigned port
= atoi(ports
[j
]);
796 /* Keep the first port for mDNS service
803 if (!smbd_open_one_socket(parent
,
812 /* Just bind to 0.0.0.0 - accept connections
815 const char *sock_addr
;
817 const char *sock_ptr
;
820 sock_addr
= "::,0.0.0.0";
822 sock_addr
= "0.0.0.0";
825 for (sock_ptr
=sock_addr
;
826 next_token_talloc(talloc_tos(), &sock_ptr
, &sock_tok
, " \t,"); ) {
827 for (j
= 0; ports
&& ports
[j
]; j
++) {
828 struct sockaddr_storage ss
;
829 unsigned port
= atoi(ports
[j
]);
831 /* Keep the first port for mDNS service
838 /* open an incoming socket */
839 if (!interpret_string_addr(&ss
, sock_tok
,
840 AI_NUMERICHOST
|AI_PASSIVE
)) {
845 * If we fail to open any sockets
846 * in this loop the parent-sockets == NULL
847 * case below will prevent us from starting.
850 (void)smbd_open_one_socket(parent
,
858 if (parent
->sockets
== NULL
) {
859 DEBUG(0,("open_sockets_smbd: No "
860 "sockets available to bind to.\n"));
864 /* Setup the main smbd so that we can get messages. Note that
865 do this after starting listening. This is needed as when in
866 clustered mode, ctdb won't allow us to start doing database
867 operations until it has gone thru a full startup, which
868 includes checking to see that smbd is listening. */
870 if (!serverid_register(messaging_server_id(msg_ctx
),
871 FLAG_MSG_GENERAL
|FLAG_MSG_SMBD
872 |FLAG_MSG_PRINT_GENERAL
874 DEBUG(0, ("open_sockets_smbd: Failed to register "
875 "myself in serverid.tdb\n"));
879 /* Listen to messages */
881 messaging_register(msg_ctx
, NULL
, MSG_SHUTDOWN
, msg_exit_server
);
882 messaging_register(msg_ctx
, ev_ctx
, MSG_SMB_CONF_UPDATED
,
883 smbd_parent_conf_updated
);
884 messaging_register(msg_ctx
, NULL
, MSG_SMB_STAT_CACHE_DELETE
,
885 smb_stat_cache_delete
);
886 messaging_register(msg_ctx
, NULL
, MSG_DEBUG
, smbd_msg_debug
);
887 messaging_register(msg_ctx
, NULL
, MSG_SMB_BRL_VALIDATE
,
889 messaging_register(msg_ctx
, NULL
, MSG_SMB_FORCE_TDIS
,
890 smb_parent_send_to_children
);
891 messaging_register(msg_ctx
, NULL
, MSG_SMB_KILL_CLIENT_IP
,
892 smb_parent_send_to_children
);
893 messaging_register(msg_ctx
, NULL
, MSG_SMB_TELL_NUM_CHILDREN
,
894 smb_tell_num_children
);
896 messaging_register(msg_ctx
, NULL
,
897 ID_CACHE_DELETE
, smbd_parent_id_cache_delete
);
898 messaging_register(msg_ctx
, NULL
,
899 ID_CACHE_KILL
, smbd_parent_id_cache_kill
);
901 if (lp_clustering()) {
902 ctdbd_register_reconfigure(messaging_ctdbd_connection());
906 messaging_register(msg_ctx
, NULL
, MSG_SMB_INJECT_FAULT
,
910 if (lp_multicast_dns_register() && (dns_port
!= 0)) {
911 #ifdef WITH_DNSSD_SUPPORT
912 smbd_setup_mdns_registration(ev_ctx
,
915 #ifdef WITH_AVAHI_SUPPORT
918 avahi_conn
= avahi_start_register(ev_ctx
,
921 if (avahi_conn
== NULL
) {
922 DEBUG(10, ("avahi_start_register failed\n"));
932 handle stdin becoming readable when we are in --foreground mode
934 static void smbd_stdin_handler(struct tevent_context
*ev
,
935 struct tevent_fd
*fde
,
940 if (read(0, &c
, 1) != 1) {
941 /* we have reached EOF on stdin, which means the
942 parent has exited. Shutdown the server */
943 exit_server_cleanly("EOF on stdin");
947 struct smbd_parent_tevent_trace_state
{
951 static void smbd_parent_tevent_trace_callback(enum tevent_trace_point point
,
954 struct smbd_parent_tevent_trace_state
*state
=
955 (struct smbd_parent_tevent_trace_state
*)private_data
;
958 case TEVENT_TRACE_BEFORE_WAIT
:
960 case TEVENT_TRACE_AFTER_WAIT
:
962 case TEVENT_TRACE_BEFORE_LOOP_ONCE
:
963 TALLOC_FREE(state
->frame
);
964 state
->frame
= talloc_stackframe();
966 case TEVENT_TRACE_AFTER_LOOP_ONCE
:
967 TALLOC_FREE(state
->frame
);
974 static void smbd_parent_loop(struct tevent_context
*ev_ctx
,
975 struct smbd_parent_context
*parent
)
977 struct smbd_parent_tevent_trace_state trace_state
= {
982 tevent_set_trace_callback(ev_ctx
, smbd_parent_tevent_trace_callback
,
985 /* now accept incoming connections - forking a new process
986 for each incoming connection */
987 DEBUG(2,("waiting for connections\n"));
989 ret
= tevent_loop_wait(ev_ctx
);
991 DEBUG(0, ("tevent_loop_wait failed: %d, %s, exiting\n",
992 ret
, strerror(errno
)));
995 TALLOC_FREE(trace_state
.frame
);
997 /* NOTREACHED return True; */
1001 /****************************************************************************
1002 Initialise connect, service and file structs.
1003 ****************************************************************************/
1005 static bool init_structs(void )
1008 * Set the machine NETBIOS name if not already
1009 * set from the config file.
1015 if (!secrets_init())
1021 static void smbd_parent_sig_term_handler(struct tevent_context
*ev
,
1022 struct tevent_signal
*se
,
1028 exit_server_cleanly("termination signal");
1031 static void smbd_parent_sig_hup_handler(struct tevent_context
*ev
,
1032 struct tevent_signal
*se
,
1038 struct smbd_parent_context
*parent
=
1039 talloc_get_type_abort(private_data
,
1040 struct smbd_parent_context
);
1042 change_to_root_user();
1043 DEBUG(1,("parent: Reloading services after SIGHUP\n"));
1044 reload_services(NULL
, NULL
, false);
1046 printing_subsystem_update(parent
->ev_ctx
, parent
->msg_ctx
, true);
1049 /****************************************************************************
1051 ****************************************************************************/
1053 /* Declare prototype for build_options() to avoid having to run it through
1054 mkproto.h. Mixing $(builddir) and $(srcdir) source files in the current
1055 prototype generation system is too complicated. */
1057 extern void build_options(bool screen
);
1059 int main(int argc
,const char *argv
[])
1061 /* shall I run as a daemon */
1062 bool is_daemon
= false;
1063 bool interactive
= false;
1065 bool no_process_group
= false;
1066 bool log_stdout
= false;
1068 char *profile_level
= NULL
;
1071 bool print_build_options
= False
;
1076 OPT_NO_PROCESS_GROUP
,
1079 struct poptOption long_options
[] = {
1081 {"daemon", 'D', POPT_ARG_NONE
, NULL
, OPT_DAEMON
, "Become a daemon (default)" },
1082 {"interactive", 'i', POPT_ARG_NONE
, NULL
, OPT_INTERACTIVE
, "Run interactive (not a daemon)"},
1083 {"foreground", 'F', POPT_ARG_NONE
, NULL
, OPT_FORK
, "Run daemon in foreground (for daemontools, etc.)" },
1084 {"no-process-group", '\0', POPT_ARG_NONE
, NULL
, OPT_NO_PROCESS_GROUP
, "Don't create a new process group" },
1085 {"log-stdout", 'S', POPT_ARG_NONE
, NULL
, OPT_LOG_STDOUT
, "Log to stdout" },
1086 {"build-options", 'b', POPT_ARG_NONE
, NULL
, 'b', "Print build options" },
1087 {"port", 'p', POPT_ARG_STRING
, &ports
, 0, "Listen on the specified ports"},
1088 {"profiling-level", 'P', POPT_ARG_STRING
, &profile_level
, 0, "Set profiling level","PROFILE_LEVEL"},
1092 struct smbd_parent_context
*parent
= NULL
;
1095 struct tevent_context
*ev_ctx
;
1096 struct messaging_context
*msg_ctx
;
1097 struct server_id server_id
;
1098 struct tevent_signal
*se
;
1099 int profiling_level
;
1100 char *np_dir
= NULL
;
1101 static const struct smbd_shim smbd_shim_fns
=
1103 .cancel_pending_lock_requests_by_fid
= smbd_cancel_pending_lock_requests_by_fid
,
1104 .send_stat_cache_delete_message
= smbd_send_stat_cache_delete_message
,
1105 .change_to_root_user
= smbd_change_to_root_user
,
1106 .become_authenticated_pipe_user
= smbd_become_authenticated_pipe_user
,
1107 .unbecome_authenticated_pipe_user
= smbd_unbecome_authenticated_pipe_user
,
1109 .contend_level2_oplocks_begin
= smbd_contend_level2_oplocks_begin
,
1110 .contend_level2_oplocks_end
= smbd_contend_level2_oplocks_end
,
1112 .become_root
= smbd_become_root
,
1113 .unbecome_root
= smbd_unbecome_root
,
1115 .exit_server
= smbd_exit_server
,
1116 .exit_server_cleanly
= smbd_exit_server_cleanly
,
1120 * Do this before any other talloc operation
1122 talloc_enable_null_tracking();
1123 frame
= talloc_stackframe();
1125 setup_logging(argv
[0], DEBUG_DEFAULT_STDOUT
);
1129 set_smbd_shim(&smbd_shim_fns
);
1131 smbd_init_globals();
1135 #ifdef HAVE_SET_AUTH_PARAMETERS
1136 set_auth_parameters(argc
,argv
);
1139 pc
= poptGetContext("smbd", argc
, argv
, long_options
, 0);
1140 while((opt
= poptGetNextOpt(pc
)) != -1) {
1145 case OPT_INTERACTIVE
:
1151 case OPT_NO_PROCESS_GROUP
:
1152 no_process_group
= true;
1154 case OPT_LOG_STDOUT
:
1158 print_build_options
= True
;
1161 d_fprintf(stderr
, "\nInvalid option %s: %s\n\n",
1162 poptBadOption(pc
, 0), poptStrerror(opt
));
1163 poptPrintUsage(pc
, stderr
, 0);
1167 poptFreeContext(pc
);
1175 setup_logging(argv
[0], DEBUG_STDOUT
);
1177 setup_logging(argv
[0], DEBUG_FILE
);
1180 if (print_build_options
) {
1181 build_options(True
); /* Display output to screen as well as debug */
1186 /* needed for SecureWare on SCO */
1190 set_remote_machine_name("smbd", False
);
1192 if (interactive
&& (DEBUGLEVEL
>= 9)) {
1193 talloc_enable_leak_report();
1196 if (log_stdout
&& Fork
) {
1197 DEBUG(0,("ERROR: Can't log to stdout (-S) unless daemon is in foreground (-F) or interactive (-i)\n"));
1201 /* we want to re-seed early to prevent time delays causing
1202 client problems at a later date. (tridge) */
1203 generate_random_buffer(NULL
, 0);
1205 /* get initial effective uid and gid */
1208 /* make absolutely sure we run as root - to handle cases where people
1209 are crazy enough to have it setuid */
1210 gain_root_privilege();
1211 gain_root_group_privilege();
1214 dump_core_setup("smbd", lp_logfile(talloc_tos()));
1216 /* we are never interested in SIGPIPE */
1217 BlockSignals(True
,SIGPIPE
);
1220 /* we are never interested in SIGFPE */
1221 BlockSignals(True
,SIGFPE
);
1224 #if defined(SIGUSR2)
1225 /* We are no longer interested in USR2 */
1226 BlockSignals(True
,SIGUSR2
);
1229 /* POSIX demands that signals are inherited. If the invoking process has
1230 * these signals masked, we will have problems, as we won't recieve them. */
1231 BlockSignals(False
, SIGHUP
);
1232 BlockSignals(False
, SIGUSR1
);
1233 BlockSignals(False
, SIGTERM
);
1235 /* Ensure we leave no zombies until we
1236 * correctly set up child handling below. */
1240 /* we want total control over the permissions on created files,
1241 so set our umask to 0 */
1246 DEBUG(0,("smbd version %s started.\n", samba_version_string()));
1247 DEBUGADD(0,("%s\n", COPYRIGHT_STARTUP_MESSAGE
));
1249 DEBUG(2,("uid=%d gid=%d euid=%d egid=%d\n",
1250 (int)getuid(),(int)getgid(),(int)geteuid(),(int)getegid()));
1252 /* Output the build options to the debug log */
1253 build_options(False
);
1255 if (sizeof(uint16
) < 2 || sizeof(uint32
) < 4) {
1256 DEBUG(0,("ERROR: Samba is not configured correctly for the word size on your machine\n"));
1260 if (!lp_load_initial_only(get_dyn_CONFIGFILE())) {
1261 DEBUG(0, ("error opening config file '%s'\n", get_dyn_CONFIGFILE()));
1265 if (!cluster_probe_ok()) {
1269 /* Init the security context and global current_user */
1273 * Initialize the event context. The event context needs to be
1274 * initialized before the messaging context, cause the messaging
1275 * context holds an event context.
1276 * FIXME: This should be s3_tevent_context_init()
1278 ev_ctx
= server_event_context();
1279 if (ev_ctx
== NULL
) {
1284 * Init the messaging context
1285 * FIXME: This should only call messaging_init()
1287 msg_ctx
= server_messaging_context();
1288 if (msg_ctx
== NULL
) {
1293 * Reloading of the printers will not work here as we don't have a
1294 * server info and rpc services set up. It will be called later.
1296 if (!reload_services(NULL
, NULL
, false)) {
1300 if (lp_server_role() == ROLE_ACTIVE_DIRECTORY_DC
1301 && !lp_parm_bool(-1, "server role check", "inhibit", false)) {
1302 DEBUG(0, ("server role = 'active directory domain controller' not compatible with running smbd standalone. \n"));
1303 DEBUGADD(0, ("You should start 'samba' instead, and it will control starting smbd if required\n"));
1307 /* ...NOTE... Log files are working from this point! */
1309 DEBUG(3,("loaded services\n"));
1313 if (!profile_setup(msg_ctx
, False
)) {
1314 DEBUG(0,("ERROR: failed to setup profiling\n"));
1318 if (profile_level
!= NULL
) {
1319 profiling_level
= atoi(profile_level
);
1321 profiling_level
= lp_smbd_profiling_level();
1323 set_profile_level(profiling_level
, messaging_server_id(msg_ctx
));
1325 if (!is_daemon
&& !is_a_socket(0)) {
1327 DEBUG(3, ("Standard input is not a socket, "
1328 "assuming -D option\n"));
1332 * Setting is_daemon here prevents us from eventually calling
1333 * the open_sockets_inetd()
1339 if (is_daemon
&& !interactive
) {
1340 DEBUG(3, ("Becoming a daemon.\n"));
1341 become_daemon(Fork
, no_process_group
, log_stdout
);
1344 set_my_unique_id(serverid_get_random_unique_id());
1348 * If we're interactive we want to set our own process group for
1349 * signal management.
1351 if (interactive
&& !no_process_group
)
1352 setpgid( (pid_t
)0, (pid_t
)0);
1355 if (!directory_exist(lp_lock_directory()))
1356 mkdir(lp_lock_directory(), 0755);
1358 if (!directory_exist(lp_pid_directory()))
1359 mkdir(lp_pid_directory(), 0755);
1362 pidfile_create(lp_pid_directory(), "smbd");
1364 status
= reinit_after_fork(msg_ctx
,
1367 if (!NT_STATUS_IS_OK(status
)) {
1368 exit_daemon("reinit_after_fork() failed", map_errno_from_nt_status(status
));
1373 * Do not initialize the parent-child-pipe before becoming a
1374 * daemon: this is used to detect a died parent in the child
1377 status
= init_before_fork();
1378 if (!NT_STATUS_IS_OK(status
)) {
1379 exit_daemon(nt_errstr(status
), map_errno_from_nt_status(status
));
1383 parent
= talloc_zero(ev_ctx
, struct smbd_parent_context
);
1385 exit_server("talloc(struct smbd_parent_context) failed");
1387 parent
->interactive
= interactive
;
1388 parent
->ev_ctx
= ev_ctx
;
1389 parent
->msg_ctx
= msg_ctx
;
1392 se
= tevent_add_signal(parent
->ev_ctx
,
1395 smbd_parent_sig_term_handler
,
1398 exit_server("failed to setup SIGTERM handler");
1400 se
= tevent_add_signal(parent
->ev_ctx
,
1403 smbd_parent_sig_hup_handler
,
1406 exit_server("failed to setup SIGHUP handler");
1409 /* Setup all the TDB's - including CLEAR_IF_FIRST tdb's. */
1411 if (smbd_memcache() == NULL
) {
1412 exit_daemon("no memcache available", EACCES
);
1415 memcache_set_global(smbd_memcache());
1417 /* Initialise the password backed before the global_sam_sid
1418 to ensure that we fetch from ldap before we make a domain sid up */
1420 if(!initialize_password_db(false, ev_ctx
))
1423 if (!secrets_init()) {
1424 exit_daemon("smbd can not open secrets.tdb", EACCES
);
1427 if (lp_server_role() == ROLE_DOMAIN_BDC
|| lp_server_role() == ROLE_DOMAIN_PDC
) {
1428 struct loadparm_context
*lp_ctx
= loadparm_init_s3(NULL
, loadparm_s3_helpers());
1429 if (!open_schannel_session_store(NULL
, lp_ctx
)) {
1430 exit_daemon("ERROR: Samba cannot open schannel store for secured NETLOGON operations.", EACCES
);
1432 TALLOC_FREE(lp_ctx
);
1435 if(!get_global_sam_sid()) {
1436 exit_daemon("Samba cannot create a SAM SID", EACCES
);
1439 server_id
= messaging_server_id(msg_ctx
);
1440 status
= smbXsrv_version_global_init(&server_id
);
1441 if (!NT_STATUS_IS_OK(status
)) {
1442 exit_daemon("Samba cannot init server context", EACCES
);
1445 status
= smbXsrv_session_global_init();
1446 if (!NT_STATUS_IS_OK(status
)) {
1447 exit_daemon("Samba cannot init session context", EACCES
);
1450 status
= smbXsrv_tcon_global_init();
1451 if (!NT_STATUS_IS_OK(status
)) {
1452 exit_daemon("Samba cannot init tcon context", EACCES
);
1455 if (!locking_init())
1456 exit_daemon("Samba cannot init locking", EACCES
);
1458 if (!leases_db_init(false)) {
1459 exit_daemon("Samba cannot init leases", EACCES
);
1462 if (!smbd_parent_notify_init(NULL
, msg_ctx
, ev_ctx
)) {
1463 exit_daemon("Samba cannot init notification", EACCES
);
1466 if (!messaging_parent_dgm_cleanup_init(msg_ctx
)) {
1470 if (!smbd_scavenger_init(NULL
, msg_ctx
, ev_ctx
)) {
1471 exit_daemon("Samba cannot init scavenging", EACCES
);
1474 if (!serverid_parent_init(ev_ctx
)) {
1475 exit_daemon("Samba cannot init server id", EACCES
);
1478 if (!W_ERROR_IS_OK(registry_init_full()))
1479 exit_daemon("Samba cannot init registry", EACCES
);
1481 /* Open the share_info.tdb here, so we don't have to open
1482 after the fork on every single connection. This is a small
1483 performance improvment and reduces the total number of system
1485 if (!share_info_db_init()) {
1486 exit_daemon("ERROR: failed to load share info db.", EACCES
);
1489 status
= init_system_session_info();
1490 if (!NT_STATUS_IS_OK(status
)) {
1491 DEBUG(1, ("ERROR: failed to setup system user info: %s.\n",
1492 nt_errstr(status
)));
1496 if (!init_guest_info()) {
1497 DEBUG(0,("ERROR: failed to setup guest info.\n"));
1501 if (!file_init_global()) {
1502 DEBUG(0, ("ERROR: file_init_global() failed\n"));
1505 status
= smbXsrv_open_global_init();
1506 if (!NT_STATUS_IS_OK(status
)) {
1507 exit_daemon("Samba cannot init global open", map_errno_from_nt_status(status
));
1510 /* This MUST be done before start_epmd() because otherwise
1511 * start_epmd() forks and races against dcesrv_ep_setup() to
1512 * call directory_create_or_exist() */
1513 if (!directory_create_or_exist(lp_ncalrpc_dir(), 0755)) {
1514 DEBUG(0, ("Failed to create pipe directory %s - %s\n",
1515 lp_ncalrpc_dir(), strerror(errno
)));
1519 np_dir
= talloc_asprintf(talloc_tos(), "%s/np", lp_ncalrpc_dir());
1521 DEBUG(0, ("%s: Out of memory\n", __location__
));
1525 if (!directory_create_or_exist_strict(np_dir
, geteuid(), 0700)) {
1526 DEBUG(0, ("Failed to create pipe directory %s - %s\n",
1527 np_dir
, strerror(errno
)));
1531 if (is_daemon
&& !interactive
) {
1532 if (rpc_epmapper_daemon() == RPC_DAEMON_FORK
) {
1533 start_epmd(ev_ctx
, msg_ctx
);
1537 if (!dcesrv_ep_setup(ev_ctx
, msg_ctx
)) {
1538 exit_daemon("Samba cannot setup ep pipe", EACCES
);
1541 if (is_daemon
&& !interactive
) {
1542 daemon_ready("smbd");
1545 /* only start other daemons if we are running as a daemon
1546 * -- bad things will happen if smbd is launched via inetd
1547 * and we fork a copy of ourselves here */
1548 if (is_daemon
&& !interactive
) {
1550 if (rpc_lsasd_daemon() == RPC_DAEMON_FORK
) {
1551 start_lsasd(ev_ctx
, msg_ctx
);
1554 if (!lp__disable_spoolss() &&
1555 (rpc_spoolss_daemon() != RPC_DAEMON_DISABLED
)) {
1556 bool bgq
= lp_parm_bool(-1, "smbd", "backgroundqueue", true);
1558 if (!printing_subsystem_init(ev_ctx
, msg_ctx
, true, bgq
)) {
1559 exit_daemon("Samba failed to init printing subsystem", EACCES
);
1562 } else if (!lp__disable_spoolss() &&
1563 (rpc_spoolss_daemon() != RPC_DAEMON_DISABLED
)) {
1564 if (!printing_subsystem_init(ev_ctx
, msg_ctx
, false, false)) {
1575 /* Started from inetd. fd 0 is the socket. */
1576 /* We will abort gracefully when the client or remote system
1580 /* close stdin, stdout (if not logging to it), but not stderr */
1581 close_low_fds(true, !debug_get_output_is_stdout(), false);
1588 smbd_setup_sig_chld_handler(parent
);
1590 smbd_process(ev_ctx
, msg_ctx
, sock
, true);
1592 exit_server_cleanly(NULL
);
1596 if (!open_sockets_smbd(parent
, ev_ctx
, msg_ctx
, ports
))
1597 exit_server("open_sockets_smbd() failed");
1599 /* do a printer update now that all messaging has been set up,
1600 * before we allow clients to start connecting */
1601 if (!lp__disable_spoolss() &&
1602 (rpc_spoolss_daemon() != RPC_DAEMON_DISABLED
)) {
1603 printing_subsystem_update(ev_ctx
, msg_ctx
, false);
1607 /* make sure we always have a valid stackframe */
1608 frame
= talloc_stackframe();
1611 /* if we are running in the foreground then look for
1612 EOF on stdin, and exit if it happens. This allows
1613 us to die if the parent process dies
1614 Only do this on a pipe or socket, no other device.
1617 if (fstat(0, &st
) != 0) {
1620 if (S_ISFIFO(st
.st_mode
) || S_ISSOCK(st
.st_mode
)) {
1621 tevent_add_fd(ev_ctx
,
1630 smbd_parent_loop(ev_ctx
, parent
);
1632 exit_server_cleanly(NULL
);