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/>.
28 static int am_parent
= 1;
30 extern struct auth_context
*negprot_global_auth_context
;
31 extern SIG_ATOMIC_T got_sig_term
;
32 extern SIG_ATOMIC_T reload_after_sighup
;
33 static SIG_ATOMIC_T got_sig_cld
;
36 extern int dcelogin_atmost_once
;
39 /* really we should have a top level context structure that has the
40 client file descriptor as an element. That would require a major rewrite :(
42 the following 2 functions are an alternative - they make the file
43 descriptor private to smbd
45 static int server_fd
= -1;
47 int smbd_server_fd(void)
52 static void smbd_set_server_fd(int fd
)
57 int get_client_fd(void)
62 int client_get_tcp_info(struct sockaddr_in
*server
, struct sockaddr_in
*client
)
65 if (server_fd
== -1) {
68 length
= sizeof(*server
);
69 if (getsockname(server_fd
, (struct sockaddr
*)server
, &length
) != 0) {
72 length
= sizeof(*client
);
73 if (getpeername(server_fd
, (struct sockaddr
*)client
, &length
) != 0) {
79 struct event_context
*smbd_event_context(void)
81 static struct event_context
*ctx
;
83 if (!ctx
&& !(ctx
= event_context_init(NULL
))) {
84 smb_panic("Could not init smbd event context");
89 struct messaging_context
*smbd_messaging_context(void)
91 static struct messaging_context
*ctx
;
94 ctx
= messaging_init(NULL
, server_id_self(),
95 smbd_event_context());
98 DEBUG(0, ("Could not init smbd messaging context.\n"));
103 struct memcache
*smbd_memcache(void)
105 static struct memcache
*cache
;
108 && !(cache
= memcache_init(NULL
,
109 lp_max_stat_cache_size()*1024))) {
111 smb_panic("Could not init smbd memcache");
116 /*******************************************************************
117 What to do when smb.conf is updated.
118 ********************************************************************/
120 static void smb_conf_updated(struct messaging_context
*msg
,
123 struct server_id server_id
,
126 DEBUG(10,("smb_conf_updated: Got message saying smb.conf was "
127 "updated. Reloading.\n"));
128 reload_services(False
);
132 /*******************************************************************
133 Delete a statcache entry.
134 ********************************************************************/
136 static void smb_stat_cache_delete(struct messaging_context
*msg
,
139 struct server_id server_id
,
142 const char *name
= (const char *)data
->data
;
143 DEBUG(10,("smb_stat_cache_delete: delete name %s\n", name
));
144 stat_cache_delete(name
);
147 /****************************************************************************
149 ****************************************************************************/
151 static void sig_term(void)
154 sys_select_signal(SIGTERM
);
157 /****************************************************************************
159 ****************************************************************************/
161 static void sig_hup(int sig
)
163 reload_after_sighup
= 1;
164 sys_select_signal(SIGHUP
);
167 /****************************************************************************
169 ****************************************************************************/
170 static void sig_cld(int sig
)
173 sys_select_signal(SIGCLD
);
176 /****************************************************************************
177 Send a SIGTERM to our process group.
178 *****************************************************************************/
180 static void killkids(void)
182 if(am_parent
) kill(0,SIGTERM
);
185 /****************************************************************************
186 Process a sam sync message - not sure whether to do this here or
188 ****************************************************************************/
190 static void msg_sam_sync(struct messaging_context
*msg
,
193 struct server_id server_id
,
196 DEBUG(10, ("** sam sync message received, ignoring\n"));
200 /****************************************************************************
201 Open the socket communication - inetd.
202 ****************************************************************************/
204 static bool open_sockets_inetd(void)
206 /* Started from inetd. fd 0 is the socket. */
207 /* We will abort gracefully when the client or remote system
209 smbd_set_server_fd(dup(0));
211 /* close our standard file descriptors */
212 close_low_fds(False
); /* Don't close stderr */
214 set_socket_options(smbd_server_fd(),"SO_KEEPALIVE");
215 set_socket_options(smbd_server_fd(), lp_socket_options());
220 static void msg_exit_server(struct messaging_context
*msg
,
223 struct server_id server_id
,
226 DEBUG(3, ("got a SHUTDOWN message\n"));
227 exit_server_cleanly(NULL
);
231 static void msg_inject_fault(struct messaging_context
*msg
,
234 struct server_id src
,
239 if (data
->length
!= sizeof(sig
)) {
241 DEBUG(0, ("Process %s sent bogus signal injection request\n",
242 procid_str_static(&src
)));
246 sig
= *(int *)data
->data
;
248 exit_server("internal error injected");
253 DEBUG(0, ("Process %s requested injection of signal %d (%s)\n",
254 procid_str_static(&src
), sig
, strsignal(sig
)));
256 DEBUG(0, ("Process %s requested injection of signal %d\n",
257 procid_str_static(&src
), sig
));
260 kill(sys_getpid(), sig
);
262 #endif /* DEVELOPER */
265 struct child_pid
*prev
, *next
;
269 static struct child_pid
*children
;
270 static int num_children
;
272 static void add_child_pid(pid_t pid
)
274 struct child_pid
*child
;
276 if (lp_max_smbd_processes() == 0) {
277 /* Don't bother with the child list if we don't care anyway */
281 child
= SMB_MALLOC_P(struct child_pid
);
283 DEBUG(0, ("Could not add child struct -- malloc failed\n"));
287 DLIST_ADD(children
, child
);
291 static void remove_child_pid(pid_t pid
, bool unclean_shutdown
)
293 struct child_pid
*child
;
295 if (unclean_shutdown
) {
296 /* a child terminated uncleanly so tickle all processes to see
297 if they can grab any of the pending locks
299 DEBUG(3,(__location__
" Unclean shutdown of pid %u\n", pid
));
300 messaging_send_buf(smbd_messaging_context(), procid_self(),
301 MSG_SMB_BRL_VALIDATE
, NULL
, 0);
302 message_send_all(smbd_messaging_context(),
303 MSG_SMB_UNLOCK
, NULL
, 0, NULL
);
306 if (lp_max_smbd_processes() == 0) {
307 /* Don't bother with the child list if we don't care anyway */
311 for (child
= children
; child
!= NULL
; child
= child
->next
) {
312 if (child
->pid
== pid
) {
313 struct child_pid
*tmp
= child
;
314 DLIST_REMOVE(children
, child
);
321 DEBUG(0, ("Could not find child %d -- ignoring\n", (int)pid
));
324 /****************************************************************************
325 Have we reached the process limit ?
326 ****************************************************************************/
328 static bool allowable_number_of_smbd_processes(void)
330 int max_processes
= lp_max_smbd_processes();
335 return num_children
< max_processes
;
338 /****************************************************************************
339 Open the socket communication.
340 ****************************************************************************/
342 static bool open_sockets_smbd(bool is_daemon
, bool interactive
, const char *smb_ports
)
344 int num_interfaces
= iface_count();
346 int fd_listenset
[FD_SETSIZE
];
352 struct dns_reg_state
* dns_reg
= NULL
;
353 unsigned dns_port
= 0;
356 return open_sockets_inetd();
361 static int atexit_set
;
362 if(atexit_set
== 0) {
370 CatchSignal(SIGCLD
, sig_cld
);
372 FD_ZERO(&listen_set
);
374 /* use a reasonable default set of ports - listing on 445 and 139 */
376 ports
= lp_smb_ports();
377 if (!ports
|| !*ports
) {
378 ports
= smb_xstrdup(SMB_PORTS
);
380 ports
= smb_xstrdup(ports
);
383 ports
= smb_xstrdup(smb_ports
);
386 if (lp_interfaces() && lp_bind_interfaces_only()) {
387 /* We have been given an interfaces line, and been
388 told to only bind to those interfaces. Create a
389 socket per interface and bind to only these.
392 /* Now open a listen socket for each of the
394 for(i
= 0; i
< num_interfaces
; i
++) {
395 TALLOC_CTX
*frame
= NULL
;
396 const struct sockaddr_storage
*ifss
=
397 iface_n_sockaddr_storage(i
);
402 DEBUG(0,("open_sockets_smbd: "
403 "interface %d has NULL IP address !\n",
408 frame
= talloc_stackframe();
410 next_token_talloc(frame
,&ptr
, &tok
, " \t,");) {
411 unsigned port
= atoi(tok
);
412 if (port
== 0 || port
> 0xffff) {
416 /* Keep the first port for mDNS service
423 s
= fd_listenset
[num_sockets
] =
424 open_socket_in(SOCK_STREAM
,
426 num_sockets
== 0 ? 0 : 2,
433 /* ready to listen */
434 set_socket_options(s
,"SO_KEEPALIVE");
435 set_socket_options(s
,lp_socket_options());
437 /* Set server socket to
438 * non-blocking for the accept. */
439 set_blocking(s
,False
);
441 if (listen(s
, SMBD_LISTEN_BACKLOG
) == -1) {
442 DEBUG(0,("open_sockets_smbd: listen: "
443 "%s\n", strerror(errno
)));
448 FD_SET(s
,&listen_set
);
449 maxfd
= MAX( maxfd
, s
);
452 if (num_sockets
>= FD_SETSIZE
) {
453 DEBUG(0,("open_sockets_smbd: Too "
454 "many sockets to bind to\n"));
462 /* Just bind to 0.0.0.0 - accept connections
465 TALLOC_CTX
*frame
= talloc_stackframe();
468 const char *sock_addr
= lp_socket_address();
470 const char *sock_ptr
;
472 if (sock_addr
[0] == '\0' ||
473 strequal(sock_addr
, "0.0.0.0") ||
474 strequal(sock_addr
, "::")) {
476 sock_addr
= "::,0.0.0.0";
478 sock_addr
= "0.0.0.0";
482 for (sock_ptr
=sock_addr
;
483 next_token_talloc(frame
, &sock_ptr
, &sock_tok
, " \t,"); ) {
484 for (ptr
=ports
; next_token_talloc(frame
, &ptr
, &tok
, " \t,"); ) {
485 struct sockaddr_storage ss
;
487 unsigned port
= atoi(tok
);
488 if (port
== 0 || port
> 0xffff) {
492 /* Keep the first port for mDNS service
499 /* open an incoming socket */
500 if (!interpret_string_addr(&ss
, sock_tok
,
501 AI_NUMERICHOST
|AI_PASSIVE
)) {
505 s
= open_socket_in(SOCK_STREAM
,
507 num_sockets
== 0 ? 0 : 2,
514 /* ready to listen */
515 set_socket_options(s
,"SO_KEEPALIVE");
516 set_socket_options(s
,lp_socket_options());
518 /* Set server socket to non-blocking
520 set_blocking(s
,False
);
522 if (listen(s
, SMBD_LISTEN_BACKLOG
) == -1) {
523 DEBUG(0,("open_sockets_smbd: "
531 fd_listenset
[num_sockets
] = s
;
532 FD_SET(s
,&listen_set
);
533 maxfd
= MAX( maxfd
, s
);
537 if (num_sockets
>= FD_SETSIZE
) {
538 DEBUG(0,("open_sockets_smbd: Too "
539 "many sockets to bind to\n"));
550 if (num_sockets
== 0) {
551 DEBUG(0,("open_sockets_smbd: No "
552 "sockets available to bind to.\n"));
556 /* Setup the main smbd so that we can get messages. Note that
557 do this after starting listening. This is needed as when in
558 clustered mode, ctdb won't allow us to start doing database
559 operations until it has gone thru a full startup, which
560 includes checking to see that smbd is listening. */
561 claim_connection(NULL
,"",
562 FLAG_MSG_GENERAL
|FLAG_MSG_SMBD
|FLAG_MSG_DBWRAP
);
564 /* Listen to messages */
566 messaging_register(smbd_messaging_context(), NULL
,
567 MSG_SMB_SAM_SYNC
, msg_sam_sync
);
568 messaging_register(smbd_messaging_context(), NULL
,
569 MSG_SHUTDOWN
, msg_exit_server
);
570 messaging_register(smbd_messaging_context(), NULL
,
571 MSG_SMB_FILE_RENAME
, msg_file_was_renamed
);
572 messaging_register(smbd_messaging_context(), NULL
,
573 MSG_SMB_CONF_UPDATED
, smb_conf_updated
);
574 messaging_register(smbd_messaging_context(), NULL
,
575 MSG_SMB_STAT_CACHE_DELETE
, smb_stat_cache_delete
);
576 brl_register_msgs(smbd_messaging_context());
578 #ifdef CLUSTER_SUPPORT
579 if (lp_clustering()) {
580 ctdbd_register_reconfigure(messaging_ctdbd_connection());
585 messaging_register(smbd_messaging_context(), NULL
,
586 MSG_SMB_INJECT_FAULT
, msg_inject_fault
);
589 /* now accept incoming connections - forking a new process
590 for each incoming connection */
591 DEBUG(2,("waiting for a connection\n"));
593 struct timeval now
, idle_timeout
;
597 /* Ensure we respond to PING and DEBUG messages from the main smbd. */
598 message_dispatch(smbd_messaging_context());
606 while ((pid
= sys_waitpid(-1, &status
, WNOHANG
)) > 0) {
607 bool unclean_shutdown
= False
;
609 /* If the child terminated normally, assume
610 it was an unclean shutdown unless the
613 if (WIFEXITED(status
)) {
614 unclean_shutdown
= WEXITSTATUS(status
);
616 /* If the child terminated due to a signal
617 we always assume it was unclean.
619 if (WIFSIGNALED(status
)) {
620 unclean_shutdown
= True
;
622 remove_child_pid(pid
, unclean_shutdown
);
626 idle_timeout
= timeval_zero();
628 memcpy((char *)&r_fds
, (char *)&listen_set
,
633 /* Kick off our mDNS registration. */
635 dns_register_smbd(&dns_reg
, dns_port
, &maxfd
,
636 &r_fds
, &idle_timeout
);
639 event_add_to_select_args(smbd_event_context(), &now
,
640 &r_fds
, &w_fds
, &idle_timeout
,
643 num
= sys_select(maxfd
+1,&r_fds
,&w_fds
,NULL
,
644 timeval_is_zero(&idle_timeout
) ?
645 NULL
: &idle_timeout
);
647 if (num
== -1 && errno
== EINTR
) {
649 exit_server_cleanly(NULL
);
652 /* check for sighup processing */
653 if (reload_after_sighup
) {
654 change_to_root_user();
655 DEBUG(1,("Reloading services after SIGHUP\n"));
656 reload_services(False
);
657 reload_after_sighup
= 0;
664 /* If the idle timeout fired and we don't have any connected
665 * users, exit gracefully. We should be running under a process
666 * controller that will restart us if necessry.
668 if (num
== 0 && count_all_current_connections() == 0) {
669 exit_server_cleanly("idle timeout");
672 /* process pending nDNS responses */
673 if (dns_register_smbd_reply(dns_reg
, &r_fds
, &idle_timeout
)) {
677 if (run_events(smbd_event_context(), num
, &r_fds
, &w_fds
)) {
681 /* check if we need to reload services */
682 check_reload(time(NULL
));
684 /* Find the sockets that are read-ready -
686 for( ; num
> 0; num
--) {
687 struct sockaddr addr
;
688 socklen_t in_addrlen
= sizeof(addr
);
692 for(i
= 0; i
< num_sockets
; i
++) {
693 if(FD_ISSET(fd_listenset
[i
],&r_fds
)) {
695 /* Clear this so we don't look
697 FD_CLR(fd_listenset
[i
],&r_fds
);
702 smbd_set_server_fd(accept(s
,&addr
,&in_addrlen
));
704 if (smbd_server_fd() == -1 && errno
== EINTR
)
707 if (smbd_server_fd() == -1) {
708 DEBUG(2,("open_sockets_smbd: accept: %s\n",
713 /* Ensure child is set to blocking mode */
714 set_blocking(smbd_server_fd(),True
);
716 if (smbd_server_fd() != -1 && interactive
)
719 if (allowable_number_of_smbd_processes() &&
720 smbd_server_fd() != -1 &&
721 ((child
= sys_fork())==0)) {
722 char remaddr
[INET6_ADDRSTRLEN
];
726 /* Stop zombies, the parent explicitly handles
727 * them, counting worker smbds. */
730 /* close the listening socket(s) */
731 for(i
= 0; i
< num_sockets
; i
++)
732 close(fd_listenset
[i
]);
734 /* close our mDNS daemon handle */
735 dns_register_close(&dns_reg
);
737 /* close our standard file
739 close_low_fds(False
);
742 set_socket_options(smbd_server_fd(),"SO_KEEPALIVE");
743 set_socket_options(smbd_server_fd(),
744 lp_socket_options());
746 /* this is needed so that we get decent entries
747 in smbstatus for port 445 connects */
748 set_remote_machine_name(get_peer_addr(smbd_server_fd(),
753 if (!reinit_after_fork(
754 smbd_messaging_context(), true)) {
755 DEBUG(0,("reinit_after_fork() failed\n"));
756 smb_panic("reinit_after_fork() failed");
761 /* The parent doesn't need this socket */
762 close(smbd_server_fd());
764 /* Sun May 6 18:56:14 2001 ackley@cs.unm.edu:
765 Clear the closed fd info out of server_fd --
766 and more importantly, out of client_fd in
767 util_sock.c, to avoid a possible
768 getpeername failure if we reopen the logs
769 and use %I in the filename.
772 smbd_set_server_fd(-1);
775 add_child_pid(child
);
778 /* Force parent to check log size after
779 * spawning child. Fix from
780 * klausr@ITAP.Physik.Uni-Stuttgart.De. The
781 * parent smbd will log to logserver.smb. It
782 * writes only two messages for each child
783 * started/finished. But each child writes,
784 * say, 50 messages also in logserver.smb,
785 * begining with the debug_count of the
786 * parent, before the child opens its own log
787 * file logserver.client. In a worst case
788 * scenario the size of logserver.smb would be
789 * checked after about 50*50=2500 messages
792 force_check_log_size();
797 /* NOTREACHED return True; */
800 /****************************************************************************
802 **************************************************************************/
803 void reload_printers(void)
806 int n_services
= lp_numservices();
807 int pnum
= lp_servicenumber(PRINTERS_NAME
);
812 /* remove stale printers */
813 for (snum
= 0; snum
< n_services
; snum
++) {
814 /* avoid removing PRINTERS_NAME or non-autoloaded printers */
815 if (snum
== pnum
|| !(lp_snum_ok(snum
) && lp_print_ok(snum
) &&
816 lp_autoloaded(snum
)))
819 pname
= lp_printername(snum
);
820 if (!pcap_printername_ok(pname
)) {
821 DEBUG(3, ("removing stale printer %s\n", pname
));
823 if (is_printer_published(NULL
, snum
, NULL
))
824 nt_printer_publish(NULL
, snum
, SPOOL_DS_UNPUBLISH
);
825 del_a_printer(pname
);
826 lp_killservice(snum
);
833 /****************************************************************************
834 Reload the services file.
835 **************************************************************************/
837 bool reload_services(bool test
)
842 char *fname
= lp_configfile();
843 if (file_exist(fname
, NULL
) &&
844 !strcsequal(fname
, get_dyn_CONFIGFILE())) {
845 set_dyn_CONFIGFILE(fname
);
852 if (test
&& !lp_file_list_changed())
855 lp_killunused(conn_snum_used
);
857 ret
= lp_load(get_dyn_CONFIGFILE(), False
, False
, True
, True
);
861 /* perhaps the config filename is now set */
863 reload_services(True
);
869 if (smbd_server_fd() != -1) {
870 set_socket_options(smbd_server_fd(),"SO_KEEPALIVE");
871 set_socket_options(smbd_server_fd(), lp_socket_options());
874 mangle_reset_cache();
877 /* this forces service parameters to be flushed */
878 set_current_service(NULL
,0,True
);
883 /****************************************************************************
885 ****************************************************************************/
887 /* Reasons for shutting down a server process. */
888 enum server_exit_reason
{ SERVER_EXIT_NORMAL
, SERVER_EXIT_ABNORMAL
};
890 static void exit_server_common(enum server_exit_reason how
,
891 const char *const reason
) NORETURN_ATTRIBUTE
;
893 static void exit_server_common(enum server_exit_reason how
,
894 const char *const reason
)
896 static int firsttime
=1;
903 change_to_root_user();
905 if (negprot_global_auth_context
) {
906 (negprot_global_auth_context
->free
)(&negprot_global_auth_context
);
909 had_open_conn
= conn_close_all();
911 invalidate_all_vuids();
913 /* 3 second timeout. */
914 print_notify_send_messages(smbd_messaging_context(), 3);
916 /* delete our entry in the connections database. */
917 yield_connection(NULL
,"");
919 respond_to_all_remaining_local_messages();
922 if (dcelogin_atmost_once
) {
928 /* Destroy Samba DMAPI session only if we are master smbd process */
930 if (!dmapi_destroy_session()) {
931 DEBUG(0,("Unable to close Samba DMAPI session\n"));
939 if (how
!= SERVER_EXIT_NORMAL
) {
940 int oldlevel
= DEBUGLEVEL
;
945 DEBUG(0,("Abnormal server exit: %s\n",
946 reason
? reason
: "no explanation provided"));
951 DEBUGLEVEL
= oldlevel
;
955 DEBUG(3,("Server exit (%s)\n",
956 (reason
? reason
: "normal exit")));
959 /* if we had any open SMB connections when we exited then we
960 need to tell the parent smbd so that it can trigger a retry
961 of any locks we may have been holding or open files we were
970 void exit_server(const char *const explanation
)
972 exit_server_common(SERVER_EXIT_ABNORMAL
, explanation
);
975 void exit_server_cleanly(const char *const explanation
)
977 exit_server_common(SERVER_EXIT_NORMAL
, explanation
);
980 void exit_server_fault(void)
982 exit_server("critical server fault");
986 /****************************************************************************
987 received when we should release a specific IP
988 ****************************************************************************/
989 static void release_ip(const char *ip
, void *priv
)
991 char addr
[INET6_ADDRSTRLEN
];
993 if (strcmp(client_socket_addr(get_client_fd(),addr
,sizeof(addr
)), ip
) == 0) {
994 /* we can't afford to do a clean exit - that involves
995 database writes, which would potentially mean we
996 are still running after the failover has finished -
997 we have to get rid of this process ID straight
999 DEBUG(0,("Got release IP message for our IP %s - exiting immediately\n",
1001 /* note we must exit with non-zero status so the unclean handler gets
1002 called in the parent, so that the brl database is tickled */
1007 static void msg_release_ip(struct messaging_context
*msg_ctx
, void *private_data
,
1008 uint32_t msg_type
, struct server_id server_id
, DATA_BLOB
*data
)
1010 release_ip((char *)data
->data
, NULL
);
1013 /****************************************************************************
1014 Initialise connect, service and file structs.
1015 ****************************************************************************/
1017 static bool init_structs(void )
1020 * Set the machine NETBIOS name if not already
1021 * set from the config file.
1032 init_rpc_pipe_hnd();
1036 if (!secrets_init())
1043 * Send keepalive packets to our client
1045 static bool keepalive_fn(const struct timeval
*now
, void *private_data
)
1047 if (!send_keepalive(smbd_server_fd())) {
1048 DEBUG( 2, ( "Keepalive failed - exiting.\n" ) );
1055 * Do the recurring check if we're idle
1057 static bool deadtime_fn(const struct timeval
*now
, void *private_data
)
1059 if ((conn_num_open() == 0)
1060 || (conn_idle_all(now
->tv_sec
))) {
1061 DEBUG( 2, ( "Closing idle connection\n" ) );
1062 messaging_send(smbd_messaging_context(), procid_self(),
1063 MSG_SHUTDOWN
, &data_blob_null
);
1071 * Do the recurring log file and smb.conf reload checks.
1074 static bool housekeeping_fn(const struct timeval
*now
, void *private_data
)
1076 change_to_root_user();
1078 /* update printer queue caches if necessary */
1079 update_monitored_printq_cache();
1081 /* check if we need to reload services */
1082 check_reload(time(NULL
));
1084 /* Change machine password if neccessary. */
1085 attempt_machine_password_change();
1088 * Force a log file check.
1090 force_check_log_size();
1095 /****************************************************************************
1097 ****************************************************************************/
1099 /* Declare prototype for build_options() to avoid having to run it through
1100 mkproto.h. Mixing $(builddir) and $(srcdir) source files in the current
1101 prototype generation system is too complicated. */
1103 extern void build_options(bool screen
);
1105 int main(int argc
,const char *argv
[])
1107 /* shall I run as a daemon */
1108 static bool is_daemon
= False
;
1109 static bool interactive
= False
;
1110 static bool Fork
= True
;
1111 static bool no_process_group
= False
;
1112 static bool log_stdout
= False
;
1113 static char *ports
= NULL
;
1114 static char *profile_level
= NULL
;
1117 bool print_build_options
= False
;
1122 OPT_NO_PROCESS_GROUP
,
1125 struct poptOption long_options
[] = {
1127 {"daemon", 'D', POPT_ARG_NONE
, NULL
, OPT_DAEMON
, "Become a daemon (default)" },
1128 {"interactive", 'i', POPT_ARG_NONE
, NULL
, OPT_INTERACTIVE
, "Run interactive (not a daemon)"},
1129 {"foreground", 'F', POPT_ARG_NONE
, NULL
, OPT_FORK
, "Run daemon in foreground (for daemontools, etc.)" },
1130 {"no-process-group", '\0', POPT_ARG_NONE
, NULL
, OPT_NO_PROCESS_GROUP
, "Don't create a new process group" },
1131 {"log-stdout", 'S', POPT_ARG_NONE
, NULL
, OPT_LOG_STDOUT
, "Log to stdout" },
1132 {"build-options", 'b', POPT_ARG_NONE
, NULL
, 'b', "Print build options" },
1133 {"port", 'p', POPT_ARG_STRING
, &ports
, 0, "Listen on the specified ports"},
1134 {"profiling-level", 'P', POPT_ARG_STRING
, &profile_level
, 0, "Set profiling level","PROFILE_LEVEL"},
1136 POPT_COMMON_DYNCONFIG
1139 TALLOC_CTX
*frame
= talloc_stackframe(); /* Setup tos. */
1143 #ifdef HAVE_SET_AUTH_PARAMETERS
1144 set_auth_parameters(argc
,argv
);
1147 pc
= poptGetContext("smbd", argc
, argv
, long_options
, 0);
1148 while((opt
= poptGetNextOpt(pc
)) != -1) {
1153 case OPT_INTERACTIVE
:
1159 case OPT_NO_PROCESS_GROUP
:
1160 no_process_group
= true;
1162 case OPT_LOG_STDOUT
:
1166 print_build_options
= True
;
1169 d_fprintf(stderr
, "\nInvalid option %s: %s\n\n",
1170 poptBadOption(pc
, 0), poptStrerror(opt
));
1171 poptPrintUsage(pc
, stderr
, 0);
1175 poptFreeContext(pc
);
1182 setup_logging(argv
[0],log_stdout
);
1184 if (print_build_options
) {
1185 build_options(True
); /* Display output to screen as well as debug */
1192 /* needed for SecureWare on SCO */
1198 set_remote_machine_name("smbd", False
);
1200 if (interactive
&& (DEBUGLEVEL
>= 9)) {
1201 talloc_enable_leak_report();
1204 if (log_stdout
&& Fork
) {
1205 DEBUG(0,("ERROR: Can't log to stdout (-S) unless daemon is in foreground (-F) or interactive (-i)\n"));
1209 /* we want to re-seed early to prevent time delays causing
1210 client problems at a later date. (tridge) */
1211 generate_random_buffer(NULL
, 0);
1213 /* make absolutely sure we run as root - to handle cases where people
1214 are crazy enough to have it setuid */
1216 gain_root_privilege();
1217 gain_root_group_privilege();
1219 fault_setup((void (*)(void *))exit_server_fault
);
1220 dump_core_setup("smbd");
1222 CatchSignal(SIGTERM
, SIGNAL_CAST sig_term
);
1223 CatchSignal(SIGHUP
,SIGNAL_CAST sig_hup
);
1225 /* we are never interested in SIGPIPE */
1226 BlockSignals(True
,SIGPIPE
);
1229 /* we are never interested in SIGFPE */
1230 BlockSignals(True
,SIGFPE
);
1233 #if defined(SIGUSR2)
1234 /* We are no longer interested in USR2 */
1235 BlockSignals(True
,SIGUSR2
);
1238 /* POSIX demands that signals are inherited. If the invoking process has
1239 * these signals masked, we will have problems, as we won't recieve them. */
1240 BlockSignals(False
, SIGHUP
);
1241 BlockSignals(False
, SIGUSR1
);
1242 BlockSignals(False
, SIGTERM
);
1244 /* we want total control over the permissions on created files,
1245 so set our umask to 0 */
1252 DEBUG(0,("smbd version %s started.\n", SAMBA_VERSION_STRING
));
1253 DEBUGADD(0,("%s\n", COPYRIGHT_STARTUP_MESSAGE
));
1255 DEBUG(2,("uid=%d gid=%d euid=%d egid=%d\n",
1256 (int)getuid(),(int)getgid(),(int)geteuid(),(int)getegid()));
1258 /* Output the build options to the debug log */
1259 build_options(False
);
1261 if (sizeof(uint16
) < 2 || sizeof(uint32
) < 4) {
1262 DEBUG(0,("ERROR: Samba is not configured correctly for the word size on your machine\n"));
1266 if (!lp_load_initial_only(get_dyn_CONFIGFILE())) {
1267 DEBUG(0, ("error opening config file\n"));
1271 if (smbd_messaging_context() == NULL
)
1274 if (!reload_services(False
))
1280 if (!profile_setup(smbd_messaging_context(), False
)) {
1281 DEBUG(0,("ERROR: failed to setup profiling\n"));
1284 if (profile_level
!= NULL
) {
1285 int pl
= atoi(profile_level
);
1286 struct server_id src
;
1288 DEBUG(1, ("setting profiling level: %s\n",profile_level
));
1290 set_profile_level(pl
, src
);
1294 DEBUG(3,( "loaded services\n"));
1296 if (!is_daemon
&& !is_a_socket(0)) {
1298 DEBUG(0,("standard input is not a socket, assuming -D option\n"));
1301 * Setting is_daemon here prevents us from eventually calling
1302 * the open_sockets_inetd()
1308 if (is_daemon
&& !interactive
) {
1309 DEBUG( 3, ( "Becoming a daemon.\n" ) );
1310 become_daemon(Fork
, no_process_group
);
1315 * If we're interactive we want to set our own process group for
1316 * signal management.
1318 if (interactive
&& !no_process_group
)
1319 setpgid( (pid_t
)0, (pid_t
)0);
1322 if (!directory_exist(lp_lockdir(), NULL
))
1323 mkdir(lp_lockdir(), 0755);
1326 pidfile_create("smbd");
1328 if (!reinit_after_fork(smbd_messaging_context(), false)) {
1329 DEBUG(0,("reinit_after_fork() failed\n"));
1333 /* Setup all the TDB's - including CLEAR_IF_FIRST tdb's. */
1335 if (smbd_memcache() == NULL
) {
1339 memcache_set_global(smbd_memcache());
1341 /* Initialise the password backed before the global_sam_sid
1342 to ensure that we fetch from ldap before we make a domain sid up */
1344 if(!initialize_password_db(False
, smbd_event_context()))
1347 if (!secrets_init()) {
1348 DEBUG(0, ("ERROR: smbd can not open secrets.tdb\n"));
1352 if(!get_global_sam_sid()) {
1353 DEBUG(0,("ERROR: Samba cannot create a SAM SID.\n"));
1357 if (!session_init())
1360 if (!connections_init(True
))
1363 if (!locking_init())
1368 if (!W_ERROR_IS_OK(registry_init_full()))
1372 if (!init_svcctl_db())
1376 if (!print_backend_init(smbd_messaging_context()))
1379 if (!init_guest_info()) {
1380 DEBUG(0,("ERROR: failed to setup guest info.\n"));
1384 /* only start the background queue daemon if we are
1385 running as a daemon -- bad things will happen if
1386 smbd is launched via inetd and we fork a copy of
1389 if (is_daemon
&& !interactive
1390 && lp_parm_bool(-1, "smbd", "backgroundqueue", true)) {
1391 start_background_queue();
1394 if (!open_sockets_smbd(is_daemon
, interactive
, ports
))
1398 * everything after this point is run after the fork()
1405 /* Possibly reload the services file. Only worth doing in
1406 * daemon mode. In inetd mode, we know we only just loaded this.
1409 reload_services(True
);
1412 if (!init_account_policy()) {
1413 DEBUG(0,("Could not open account policy tdb.\n"));
1417 if (*lp_rootdir()) {
1418 if (sys_chroot(lp_rootdir()) == 0)
1419 DEBUG(2,("Changed root to %s\n", lp_rootdir()));
1423 if (!init_oplocks(smbd_messaging_context()))
1426 /* Setup aio signal handler. */
1427 initialize_async_io_handler();
1429 /* register our message handlers */
1430 messaging_register(smbd_messaging_context(), NULL
,
1431 MSG_SMB_FORCE_TDIS
, msg_force_tdis
);
1432 messaging_register(smbd_messaging_context(), NULL
,
1433 MSG_SMB_RELEASE_IP
, msg_release_ip
);
1434 messaging_register(smbd_messaging_context(), NULL
,
1435 MSG_SMB_CLOSE_FILE
, msg_close_file
);
1437 if ((lp_keepalive() != 0)
1438 && !(event_add_idle(smbd_event_context(), NULL
,
1439 timeval_set(lp_keepalive(), 0),
1440 "keepalive", keepalive_fn
,
1442 DEBUG(0, ("Could not add keepalive event\n"));
1446 if (!(event_add_idle(smbd_event_context(), NULL
,
1447 timeval_set(IDLE_CLOSED_TIMEOUT
, 0),
1448 "deadtime", deadtime_fn
, NULL
))) {
1449 DEBUG(0, ("Could not add deadtime event\n"));
1453 if (!(event_add_idle(smbd_event_context(), NULL
,
1454 timeval_set(SMBD_SELECT_TIMEOUT
, 0),
1455 "housekeeping", housekeeping_fn
, NULL
))) {
1456 DEBUG(0, ("Could not add housekeeping event\n"));
1460 #ifdef CLUSTER_SUPPORT
1462 if (lp_clustering()) {
1464 * We need to tell ctdb about our client's TCP
1465 * connection, so that for failover ctdbd can send
1466 * tickle acks, triggering a reconnection by the
1470 struct sockaddr_in srv
, clnt
;
1472 if (client_get_tcp_info(&srv
, &clnt
) == 0) {
1476 status
= ctdbd_register_ips(
1477 messaging_ctdbd_connection(),
1478 &srv
, &clnt
, release_ip
, NULL
);
1480 if (!NT_STATUS_IS_OK(status
)) {
1481 DEBUG(0, ("ctdbd_register_ips failed: %s\n",
1482 nt_errstr(status
)));
1486 DEBUG(0,("Unable to get tcp info for "
1487 "CTDB_CONTROL_TCP_CLIENT: %s\n",
1498 namecache_shutdown();
1500 exit_server_cleanly(NULL
);