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 "smbd/globals.h"
30 extern int dcelogin_atmost_once
;
33 int smbd_server_fd(void)
38 static void smbd_set_server_fd(int fd
)
43 int get_client_fd(void)
48 struct event_context
*smbd_event_context(void)
50 if (!smbd_event_ctx
) {
51 smbd_event_ctx
= event_context_init(talloc_autofree_context());
53 if (!smbd_event_ctx
) {
54 smb_panic("Could not init smbd event context");
56 return smbd_event_ctx
;
59 struct messaging_context
*smbd_messaging_context(void)
61 if (smbd_msg_ctx
== NULL
) {
62 smbd_msg_ctx
= messaging_init(talloc_autofree_context(),
64 smbd_event_context());
66 if (smbd_msg_ctx
== NULL
) {
67 DEBUG(0, ("Could not init smbd messaging context.\n"));
72 struct memcache
*smbd_memcache(void)
74 if (!smbd_memcache_ctx
) {
75 smbd_memcache_ctx
= memcache_init(talloc_autofree_context(),
76 lp_max_stat_cache_size()*1024);
78 if (!smbd_memcache_ctx
) {
79 smb_panic("Could not init smbd memcache");
82 return smbd_memcache_ctx
;
85 /*******************************************************************
86 What to do when smb.conf is updated.
87 ********************************************************************/
89 static void smb_conf_updated(struct messaging_context
*msg
,
92 struct server_id server_id
,
95 DEBUG(10,("smb_conf_updated: Got message saying smb.conf was "
96 "updated. Reloading.\n"));
97 change_to_root_user();
98 reload_services(False
);
102 /*******************************************************************
103 Delete a statcache entry.
104 ********************************************************************/
106 static void smb_stat_cache_delete(struct messaging_context
*msg
,
109 struct server_id server_id
,
112 const char *name
= (const char *)data
->data
;
113 DEBUG(10,("smb_stat_cache_delete: delete name %s\n", name
));
114 stat_cache_delete(name
);
117 /****************************************************************************
118 Send a SIGTERM to our process group.
119 *****************************************************************************/
121 static void killkids(void)
123 if(am_parent
) kill(0,SIGTERM
);
126 /****************************************************************************
127 Process a sam sync message - not sure whether to do this here or
129 ****************************************************************************/
131 static void msg_sam_sync(struct messaging_context
*msg
,
134 struct server_id server_id
,
137 DEBUG(10, ("** sam sync message received, ignoring\n"));
140 static void msg_exit_server(struct messaging_context
*msg
,
143 struct server_id server_id
,
146 DEBUG(3, ("got a SHUTDOWN message\n"));
147 exit_server_cleanly(NULL
);
151 static void msg_inject_fault(struct messaging_context
*msg
,
154 struct server_id src
,
159 if (data
->length
!= sizeof(sig
)) {
161 DEBUG(0, ("Process %s sent bogus signal injection request\n",
162 procid_str_static(&src
)));
166 sig
= *(int *)data
->data
;
168 exit_server("internal error injected");
173 DEBUG(0, ("Process %s requested injection of signal %d (%s)\n",
174 procid_str_static(&src
), sig
, strsignal(sig
)));
176 DEBUG(0, ("Process %s requested injection of signal %d\n",
177 procid_str_static(&src
), sig
));
180 kill(sys_getpid(), sig
);
182 #endif /* DEVELOPER */
185 * Parent smbd process sets its own debug level first and then
186 * sends a message to all the smbd children to adjust their debug
187 * level to that of the parent.
190 static void smbd_msg_debug(struct messaging_context
*msg_ctx
,
193 struct server_id server_id
,
196 struct child_pid
*child
;
198 debug_message(msg_ctx
, private_data
, MSG_DEBUG
, server_id
, data
);
200 for (child
= children
; child
!= NULL
; child
= child
->next
) {
201 messaging_send_buf(msg_ctx
, pid_to_procid(child
->pid
),
204 strlen((char *) data
->data
) + 1);
208 static void add_child_pid(pid_t pid
)
210 struct child_pid
*child
;
212 child
= SMB_MALLOC_P(struct child_pid
);
214 DEBUG(0, ("Could not add child struct -- malloc failed\n"));
218 DLIST_ADD(children
, child
);
223 at most every smbd:cleanuptime seconds (default 20), we scan the BRL
224 and locking database for entries to cleanup. As a side effect this
225 also cleans up dead entries in the connections database (due to the
226 traversal in message_send_all()
228 Using a timer for this prevents a flood of traversals when a large
229 number of clients disconnect at the same time (perhaps due to a
233 static void cleanup_timeout_fn(struct event_context
*event_ctx
,
234 struct timed_event
*te
,
238 struct timed_event
**cleanup_te
= (struct timed_event
**)private_data
;
240 DEBUG(1,("Cleaning up brl and lock database after unclean shutdown\n"));
241 message_send_all(smbd_messaging_context(), MSG_SMB_UNLOCK
, NULL
, 0, NULL
);
242 messaging_send_buf(smbd_messaging_context(), procid_self(),
243 MSG_SMB_BRL_VALIDATE
, NULL
, 0);
244 /* mark the cleanup as having been done */
245 (*cleanup_te
) = NULL
;
248 static void remove_child_pid(pid_t pid
, bool unclean_shutdown
)
250 struct child_pid
*child
;
251 static struct timed_event
*cleanup_te
;
253 if (unclean_shutdown
) {
254 /* a child terminated uncleanly so tickle all
255 processes to see if they can grab any of the
258 DEBUG(3,(__location__
" Unclean shutdown of pid %u\n",
261 /* call the cleanup timer, but not too often */
262 int cleanup_time
= lp_parm_int(-1, "smbd", "cleanuptime", 20);
263 cleanup_te
= event_add_timed(smbd_event_context(), NULL
,
264 timeval_current_ofs(cleanup_time
, 0),
267 DEBUG(1,("Scheduled cleanup of brl and lock database after unclean shutdown\n"));
271 for (child
= children
; child
!= NULL
; child
= child
->next
) {
272 if (child
->pid
== pid
) {
273 struct child_pid
*tmp
= child
;
274 DLIST_REMOVE(children
, child
);
281 /* not all forked child processes are added to the children list */
282 DEBUG(1, ("Could not find child %d -- ignoring\n", (int)pid
));
285 /****************************************************************************
286 Have we reached the process limit ?
287 ****************************************************************************/
289 static bool allowable_number_of_smbd_processes(void)
291 int max_processes
= lp_max_smbd_processes();
296 return num_children
< max_processes
;
299 static void smbd_sig_chld_handler(struct tevent_context
*ev
,
300 struct tevent_signal
*se
,
309 while ((pid
= sys_waitpid(-1, &status
, WNOHANG
)) > 0) {
310 bool unclean_shutdown
= False
;
312 /* If the child terminated normally, assume
313 it was an unclean shutdown unless the
316 if (WIFEXITED(status
)) {
317 unclean_shutdown
= WEXITSTATUS(status
);
319 /* If the child terminated due to a signal
320 we always assume it was unclean.
322 if (WIFSIGNALED(status
)) {
323 unclean_shutdown
= True
;
325 remove_child_pid(pid
, unclean_shutdown
);
329 static void smbd_setup_sig_chld_handler(void)
331 struct tevent_signal
*se
;
333 se
= tevent_add_signal(smbd_event_context(),
334 smbd_event_context(),
336 smbd_sig_chld_handler
,
339 exit_server("failed to setup SIGCHLD handler");
343 struct smbd_open_socket
;
345 struct smbd_parent_context
{
348 /* the list of listening sockets */
349 struct smbd_open_socket
*sockets
;
352 struct smbd_open_socket
{
353 struct smbd_open_socket
*prev
, *next
;
354 struct smbd_parent_context
*parent
;
356 struct tevent_fd
*fde
;
359 static void smbd_open_socket_close_fn(struct tevent_context
*ev
,
360 struct tevent_fd
*fde
,
364 /* this might be the socket_wrapper swrap_close() */
368 static void smbd_accept_connection(struct tevent_context
*ev
,
369 struct tevent_fd
*fde
,
373 struct smbd_open_socket
*s
= talloc_get_type_abort(private_data
,
374 struct smbd_open_socket
);
375 struct sockaddr_storage addr
;
376 socklen_t in_addrlen
= sizeof(addr
);
379 smbd_set_server_fd(accept(s
->fd
,(struct sockaddr
*)&addr
,&in_addrlen
));
381 if (smbd_server_fd() == -1 && errno
== EINTR
)
384 if (smbd_server_fd() == -1) {
385 DEBUG(0,("open_sockets_smbd: accept: %s\n",
390 if (s
->parent
->interactive
) {
392 exit_server_cleanly("end of interactive mode");
396 if (!allowable_number_of_smbd_processes()) {
397 close(smbd_server_fd());
398 smbd_set_server_fd(-1);
404 NTSTATUS status
= NT_STATUS_OK
;
408 /* Stop zombies, the parent explicitly handles
409 * them, counting worker smbds. */
412 /* close our standard file
414 close_low_fds(False
);
417 * Can't use TALLOC_FREE here. Nulling out the argument to it
418 * would overwrite memory we've just freed.
420 talloc_free(s
->parent
);
423 status
= reinit_after_fork(smbd_messaging_context(),
424 smbd_event_context(), true);
425 if (!NT_STATUS_IS_OK(status
)) {
426 if (NT_STATUS_EQUAL(status
,
427 NT_STATUS_TOO_MANY_OPENED_FILES
)) {
428 DEBUG(0,("child process cannot initialize "
429 "because too many files are open\n"));
432 DEBUG(0,("reinit_after_fork() failed\n"));
433 smb_panic("reinit_after_fork() failed");
436 smbd_setup_sig_term_handler();
437 smbd_setup_sig_hup_handler();
441 exit_server_cleanly("end of child");
443 } else if (pid
< 0) {
444 DEBUG(0,("smbd_accept_connection: sys_fork() failed: %s\n",
448 /* The parent doesn't need this socket */
449 close(smbd_server_fd());
451 /* Sun May 6 18:56:14 2001 ackley@cs.unm.edu:
452 Clear the closed fd info out of server_fd --
453 and more importantly, out of client_fd in
454 util_sock.c, to avoid a possible
455 getpeername failure if we reopen the logs
456 and use %I in the filename.
459 smbd_set_server_fd(-1);
465 /* Force parent to check log size after
466 * spawning child. Fix from
467 * klausr@ITAP.Physik.Uni-Stuttgart.De. The
468 * parent smbd will log to logserver.smb. It
469 * writes only two messages for each child
470 * started/finished. But each child writes,
471 * say, 50 messages also in logserver.smb,
472 * begining with the debug_count of the
473 * parent, before the child opens its own log
474 * file logserver.client. In a worst case
475 * scenario the size of logserver.smb would be
476 * checked after about 50*50=2500 messages
479 force_check_log_size();
482 static bool smbd_open_one_socket(struct smbd_parent_context
*parent
,
483 const struct sockaddr_storage
*ifss
,
486 struct smbd_open_socket
*s
;
488 s
= talloc(parent
, struct smbd_open_socket
);
494 s
->fd
= open_socket_in(SOCK_STREAM
,
496 parent
->sockets
== NULL
? 0 : 2,
500 DEBUG(0,("smbd_open_once_socket: open_socket_in: "
501 "%s\n", strerror(errno
)));
504 * We ignore an error here, as we've done before
509 /* ready to listen */
510 set_socket_options(s
->fd
, "SO_KEEPALIVE");
511 set_socket_options(s
->fd
, lp_socket_options());
513 /* Set server socket to
514 * non-blocking for the accept. */
515 set_blocking(s
->fd
, False
);
517 if (listen(s
->fd
, SMBD_LISTEN_BACKLOG
) == -1) {
518 DEBUG(0,("open_sockets_smbd: listen: "
519 "%s\n", strerror(errno
)));
525 s
->fde
= tevent_add_fd(smbd_event_context(),
527 s
->fd
, TEVENT_FD_READ
,
528 smbd_accept_connection
,
531 DEBUG(0,("open_sockets_smbd: "
532 "tevent_add_fd: %s\n",
538 tevent_fd_set_close_fn(s
->fde
, smbd_open_socket_close_fn
);
540 DLIST_ADD_END(parent
->sockets
, s
, struct smbd_open_socket
*);
545 static bool parent_housekeeping_fn(const struct timeval
*now
, void *private_data
)
547 DEBUG(5, ("houskeeping\n"));
548 /* check if we need to reload services */
549 check_reload(time(NULL
));
553 /****************************************************************************
554 Open the socket communication.
555 ****************************************************************************/
557 static bool open_sockets_smbd(struct smbd_parent_context
*parent
,
558 const char *smb_ports
)
560 int num_interfaces
= iface_count();
565 unsigned dns_port
= 0;
572 smbd_setup_sig_chld_handler();
574 /* use a reasonable default set of ports - listing on 445 and 139 */
576 ports
= lp_smb_ports();
577 if (!ports
|| !*ports
) {
578 ports
= talloc_strdup(talloc_tos(), SMB_PORTS
);
580 ports
= talloc_strdup(talloc_tos(), ports
);
583 ports
= talloc_strdup(talloc_tos(), smb_ports
);
587 next_token_talloc(talloc_tos(),&ptr
, &tok
, " \t,");) {
588 unsigned port
= atoi(tok
);
590 if (port
== 0 || port
> 0xffff) {
591 exit_server_cleanly("Invalid port in the config or on "
592 "the commandline specified!");
596 if (lp_interfaces() && lp_bind_interfaces_only()) {
597 /* We have been given an interfaces line, and been
598 told to only bind to those interfaces. Create a
599 socket per interface and bind to only these.
602 /* Now open a listen socket for each of the
604 for(i
= 0; i
< num_interfaces
; i
++) {
605 const struct sockaddr_storage
*ifss
=
606 iface_n_sockaddr_storage(i
);
609 DEBUG(0,("open_sockets_smbd: "
610 "interface %d has NULL IP address !\n",
616 next_token_talloc(talloc_tos(),&ptr
, &tok
, " \t,");) {
617 unsigned port
= atoi(tok
);
619 /* Keep the first port for mDNS service
626 if (!smbd_open_one_socket(parent
, ifss
, port
)) {
632 /* Just bind to 0.0.0.0 - accept connections
635 const char *sock_addr
= lp_socket_address();
637 const char *sock_ptr
;
639 if (strequal(sock_addr
, "0.0.0.0") ||
640 strequal(sock_addr
, "::")) {
642 sock_addr
= "::,0.0.0.0";
644 sock_addr
= "0.0.0.0";
648 for (sock_ptr
=sock_addr
;
649 next_token_talloc(talloc_tos(), &sock_ptr
, &sock_tok
, " \t,"); ) {
650 for (ptr
=ports
; next_token_talloc(talloc_tos(), &ptr
, &tok
, " \t,"); ) {
651 struct sockaddr_storage ss
;
652 unsigned port
= atoi(tok
);
654 /* Keep the first port for mDNS service
661 /* open an incoming socket */
662 if (!interpret_string_addr(&ss
, sock_tok
,
663 AI_NUMERICHOST
|AI_PASSIVE
)) {
667 if (!smbd_open_one_socket(parent
, &ss
, port
)) {
674 if (parent
->sockets
== NULL
) {
675 DEBUG(0,("open_sockets_smbd: No "
676 "sockets available to bind to.\n"));
680 /* Setup the main smbd so that we can get messages. Note that
681 do this after starting listening. This is needed as when in
682 clustered mode, ctdb won't allow us to start doing database
683 operations until it has gone thru a full startup, which
684 includes checking to see that smbd is listening. */
685 claim_connection(NULL
,"",
686 FLAG_MSG_GENERAL
|FLAG_MSG_SMBD
|FLAG_MSG_DBWRAP
);
688 if (!(event_add_idle(smbd_event_context(), NULL
,
689 timeval_set(SMBD_HOUSEKEEPING_INTERVAL
, 0),
690 "parent_housekeeping", parent_housekeeping_fn
,
692 DEBUG(0, ("Could not add housekeeping event\n"));
696 /* Listen to messages */
698 messaging_register(smbd_messaging_context(), NULL
,
699 MSG_SMB_SAM_SYNC
, msg_sam_sync
);
700 messaging_register(smbd_messaging_context(), NULL
,
701 MSG_SHUTDOWN
, msg_exit_server
);
702 messaging_register(smbd_messaging_context(), NULL
,
703 MSG_SMB_FILE_RENAME
, msg_file_was_renamed
);
704 messaging_register(smbd_messaging_context(), NULL
,
705 MSG_SMB_CONF_UPDATED
, smb_conf_updated
);
706 messaging_register(smbd_messaging_context(), NULL
,
707 MSG_SMB_STAT_CACHE_DELETE
, smb_stat_cache_delete
);
708 messaging_register(smbd_messaging_context(), NULL
,
709 MSG_DEBUG
, smbd_msg_debug
);
710 brl_register_msgs(smbd_messaging_context());
712 #ifdef CLUSTER_SUPPORT
713 if (lp_clustering()) {
714 ctdbd_register_reconfigure(messaging_ctdbd_connection());
719 messaging_register(smbd_messaging_context(), NULL
,
720 MSG_SMB_INJECT_FAULT
, msg_inject_fault
);
724 #ifdef WITH_DNSSD_SUPPORT
725 smbd_setup_mdns_registration(smbd_event_context(),
728 #ifdef WITH_AVAHI_SUPPORT
731 avahi_conn
= avahi_start_register(
732 smbd_event_context(), smbd_event_context(), dns_port
);
733 if (avahi_conn
== NULL
) {
734 DEBUG(10, ("avahi_start_register failed\n"));
742 static void smbd_parent_loop(struct smbd_parent_context
*parent
)
744 /* now accept incoming connections - forking a new process
745 for each incoming connection */
746 DEBUG(2,("waiting for connections\n"));
749 TALLOC_CTX
*frame
= talloc_stackframe();
751 ret
= tevent_loop_once(smbd_event_context());
753 exit_server_cleanly("tevent_loop_once() error");
759 /* NOTREACHED return True; */
762 /***************************************************************************
763 purge stale printers and reload from pre-populated pcap cache
764 ***************************************************************************/
765 void reload_printers(void)
768 int n_services
= lp_numservices();
769 int pnum
= lp_servicenumber(PRINTERS_NAME
);
772 DEBUG(10, ("reloading printer services from pcap cache\n"));
773 for (snum
= 0; snum
< n_services
; snum
++) {
774 /* avoid removing PRINTERS_NAME or non-autoloaded printers */
775 if (snum
== pnum
|| !(lp_snum_ok(snum
) && lp_print_ok(snum
) &&
776 lp_autoloaded(snum
)))
779 pname
= lp_printername(snum
);
780 if (!pcap_printername_ok(pname
)) {
781 DEBUG(3, ("removing stale printer %s\n", pname
));
783 if (is_printer_published(NULL
, snum
, NULL
))
784 nt_printer_publish(NULL
, snum
, DSPRINT_UNPUBLISH
);
785 del_a_printer(pname
);
786 lp_killservice(snum
);
793 /****************************************************************************
794 Reload the services file.
795 **************************************************************************/
797 bool reload_services(bool test
)
802 char *fname
= lp_configfile();
803 if (file_exist(fname
) &&
804 !strcsequal(fname
, get_dyn_CONFIGFILE())) {
805 set_dyn_CONFIGFILE(fname
);
813 if (test
&& !lp_file_list_changed())
816 lp_killunused(conn_snum_used
);
818 ret
= lp_load(get_dyn_CONFIGFILE(), False
, False
, True
, True
);
820 pcap_cache_reload(&reload_printers
);
822 /* perhaps the config filename is now set */
824 reload_services(True
);
830 if (smbd_server_fd() != -1) {
831 set_socket_options(smbd_server_fd(),"SO_KEEPALIVE");
832 set_socket_options(smbd_server_fd(), lp_socket_options());
835 mangle_reset_cache();
838 /* this forces service parameters to be flushed */
839 set_current_service(NULL
,0,True
);
844 /****************************************************************************
846 ****************************************************************************/
848 /* Reasons for shutting down a server process. */
849 enum server_exit_reason
{ SERVER_EXIT_NORMAL
, SERVER_EXIT_ABNORMAL
};
851 static void exit_server_common(enum server_exit_reason how
,
852 const char *const reason
) _NORETURN_
;
854 static void exit_server_common(enum server_exit_reason how
,
855 const char *const reason
)
857 bool had_open_conn
= false;
858 struct smbd_server_connection
*sconn
= smbd_server_conn
;
862 exit_firsttime
= false;
864 change_to_root_user();
866 if (sconn
&& sconn
->smb1
.negprot
.auth_context
) {
867 struct auth_context
*a
= sconn
->smb1
.negprot
.auth_context
;
868 a
->free(&sconn
->smb1
.negprot
.auth_context
);
872 had_open_conn
= conn_close_all(sconn
);
873 invalidate_all_vuids(sconn
);
876 /* 3 second timeout. */
877 print_notify_send_messages(smbd_messaging_context(), 3);
879 /* delete our entry in the connections database. */
880 yield_connection(NULL
,"");
883 if (dcelogin_atmost_once
) {
889 /* Destroy Samba DMAPI session only if we are master smbd process */
891 if (!dmapi_destroy_session()) {
892 DEBUG(0,("Unable to close Samba DMAPI session\n"));
901 * we need to force the order of freeing the following,
902 * because smbd_msg_ctx is not a talloc child of smbd_server_conn.
905 TALLOC_FREE(smbd_server_conn
);
906 TALLOC_FREE(smbd_msg_ctx
);
907 TALLOC_FREE(smbd_event_ctx
);
909 if (how
!= SERVER_EXIT_NORMAL
) {
910 int oldlevel
= DEBUGLEVEL
;
915 DEBUG(0,("Abnormal server exit: %s\n",
916 reason
? reason
: "no explanation provided"));
921 DEBUGLEVEL
= oldlevel
;
925 DEBUG(3,("Server exit (%s)\n",
926 (reason
? reason
: "normal exit")));
930 gencache_stabilize();
933 /* if we had any open SMB connections when we exited then we
934 need to tell the parent smbd so that it can trigger a retry
935 of any locks we may have been holding or open files we were
944 void exit_server(const char *const explanation
)
946 exit_server_common(SERVER_EXIT_ABNORMAL
, explanation
);
949 void exit_server_cleanly(const char *const explanation
)
951 exit_server_common(SERVER_EXIT_NORMAL
, explanation
);
954 void exit_server_fault(void)
956 exit_server("critical server fault");
959 /****************************************************************************
960 Initialise connect, service and file structs.
961 ****************************************************************************/
963 static bool init_structs(void )
966 * Set the machine NETBIOS name if not already
967 * set from the config file.
981 /****************************************************************************
983 ****************************************************************************/
985 /* Declare prototype for build_options() to avoid having to run it through
986 mkproto.h. Mixing $(builddir) and $(srcdir) source files in the current
987 prototype generation system is too complicated. */
989 extern void build_options(bool screen
);
991 int main(int argc
,const char *argv
[])
993 /* shall I run as a daemon */
994 bool is_daemon
= false;
995 bool interactive
= false;
997 bool no_process_group
= false;
998 bool log_stdout
= false;
1000 char *profile_level
= NULL
;
1003 bool print_build_options
= False
;
1008 OPT_NO_PROCESS_GROUP
,
1011 struct poptOption long_options
[] = {
1013 {"daemon", 'D', POPT_ARG_NONE
, NULL
, OPT_DAEMON
, "Become a daemon (default)" },
1014 {"interactive", 'i', POPT_ARG_NONE
, NULL
, OPT_INTERACTIVE
, "Run interactive (not a daemon)"},
1015 {"foreground", 'F', POPT_ARG_NONE
, NULL
, OPT_FORK
, "Run daemon in foreground (for daemontools, etc.)" },
1016 {"no-process-group", '\0', POPT_ARG_NONE
, NULL
, OPT_NO_PROCESS_GROUP
, "Don't create a new process group" },
1017 {"log-stdout", 'S', POPT_ARG_NONE
, NULL
, OPT_LOG_STDOUT
, "Log to stdout" },
1018 {"build-options", 'b', POPT_ARG_NONE
, NULL
, 'b', "Print build options" },
1019 {"port", 'p', POPT_ARG_STRING
, &ports
, 0, "Listen on the specified ports"},
1020 {"profiling-level", 'P', POPT_ARG_STRING
, &profile_level
, 0, "Set profiling level","PROFILE_LEVEL"},
1022 POPT_COMMON_DYNCONFIG
1025 struct smbd_parent_context
*parent
= NULL
;
1026 TALLOC_CTX
*frame
= talloc_stackframe(); /* Setup tos. */
1028 smbd_init_globals();
1032 #ifdef HAVE_SET_AUTH_PARAMETERS
1033 set_auth_parameters(argc
,argv
);
1036 pc
= poptGetContext("smbd", argc
, argv
, long_options
, 0);
1037 while((opt
= poptGetNextOpt(pc
)) != -1) {
1042 case OPT_INTERACTIVE
:
1048 case OPT_NO_PROCESS_GROUP
:
1049 no_process_group
= true;
1051 case OPT_LOG_STDOUT
:
1055 print_build_options
= True
;
1058 d_fprintf(stderr
, "\nInvalid option %s: %s\n\n",
1059 poptBadOption(pc
, 0), poptStrerror(opt
));
1060 poptPrintUsage(pc
, stderr
, 0);
1064 poptFreeContext(pc
);
1071 setup_logging(argv
[0],log_stdout
);
1073 if (print_build_options
) {
1074 build_options(True
); /* Display output to screen as well as debug */
1081 /* needed for SecureWare on SCO */
1087 set_remote_machine_name("smbd", False
);
1089 if (interactive
&& (DEBUGLEVEL
>= 9)) {
1090 talloc_enable_leak_report();
1093 if (log_stdout
&& Fork
) {
1094 DEBUG(0,("ERROR: Can't log to stdout (-S) unless daemon is in foreground (-F) or interactive (-i)\n"));
1098 /* we want to re-seed early to prevent time delays causing
1099 client problems at a later date. (tridge) */
1100 generate_random_buffer(NULL
, 0);
1102 /* make absolutely sure we run as root - to handle cases where people
1103 are crazy enough to have it setuid */
1105 gain_root_privilege();
1106 gain_root_group_privilege();
1108 fault_setup((void (*)(void *))exit_server_fault
);
1109 dump_core_setup("smbd");
1111 /* we are never interested in SIGPIPE */
1112 BlockSignals(True
,SIGPIPE
);
1115 /* we are never interested in SIGFPE */
1116 BlockSignals(True
,SIGFPE
);
1119 #if defined(SIGUSR2)
1120 /* We are no longer interested in USR2 */
1121 BlockSignals(True
,SIGUSR2
);
1124 /* POSIX demands that signals are inherited. If the invoking process has
1125 * these signals masked, we will have problems, as we won't recieve them. */
1126 BlockSignals(False
, SIGHUP
);
1127 BlockSignals(False
, SIGUSR1
);
1128 BlockSignals(False
, SIGTERM
);
1130 /* Ensure we leave no zombies until we
1131 * correctly set up child handling below. */
1135 /* we want total control over the permissions on created files,
1136 so set our umask to 0 */
1143 DEBUG(0,("smbd version %s started.\n", samba_version_string()));
1144 DEBUGADD(0,("%s\n", COPYRIGHT_STARTUP_MESSAGE
));
1146 DEBUG(2,("uid=%d gid=%d euid=%d egid=%d\n",
1147 (int)getuid(),(int)getgid(),(int)geteuid(),(int)getegid()));
1149 /* Output the build options to the debug log */
1150 build_options(False
);
1152 if (sizeof(uint16
) < 2 || sizeof(uint32
) < 4) {
1153 DEBUG(0,("ERROR: Samba is not configured correctly for the word size on your machine\n"));
1157 if (!lp_load_initial_only(get_dyn_CONFIGFILE())) {
1158 DEBUG(0, ("error opening config file\n"));
1162 if (smbd_messaging_context() == NULL
)
1165 if (!reload_services(False
))
1171 if (!profile_setup(smbd_messaging_context(), False
)) {
1172 DEBUG(0,("ERROR: failed to setup profiling\n"));
1175 if (profile_level
!= NULL
) {
1176 int pl
= atoi(profile_level
);
1177 struct server_id src
;
1179 DEBUG(1, ("setting profiling level: %s\n",profile_level
));
1181 set_profile_level(pl
, src
);
1185 DEBUG(3,( "loaded services\n"));
1187 if (!is_daemon
&& !is_a_socket(0)) {
1189 DEBUG(0,("standard input is not a socket, assuming -D option\n"));
1192 * Setting is_daemon here prevents us from eventually calling
1193 * the open_sockets_inetd()
1199 if (is_daemon
&& !interactive
) {
1200 DEBUG( 3, ( "Becoming a daemon.\n" ) );
1201 become_daemon(Fork
, no_process_group
);
1206 * If we're interactive we want to set our own process group for
1207 * signal management.
1209 if (interactive
&& !no_process_group
)
1210 setpgid( (pid_t
)0, (pid_t
)0);
1213 if (!directory_exist(lp_lockdir()))
1214 mkdir(lp_lockdir(), 0755);
1217 pidfile_create("smbd");
1219 if (!NT_STATUS_IS_OK(reinit_after_fork(smbd_messaging_context(),
1220 smbd_event_context(), false))) {
1221 DEBUG(0,("reinit_after_fork() failed\n"));
1225 smbd_setup_sig_term_handler();
1226 smbd_setup_sig_hup_handler();
1228 /* Setup all the TDB's - including CLEAR_IF_FIRST tdb's. */
1230 if (smbd_memcache() == NULL
) {
1234 memcache_set_global(smbd_memcache());
1236 /* Initialise the password backed before the global_sam_sid
1237 to ensure that we fetch from ldap before we make a domain sid up */
1239 if(!initialize_password_db(False
, smbd_event_context()))
1242 if (!secrets_init()) {
1243 DEBUG(0, ("ERROR: smbd can not open secrets.tdb\n"));
1247 if(!get_global_sam_sid()) {
1248 DEBUG(0,("ERROR: Samba cannot create a SAM SID.\n"));
1252 if (!session_init())
1255 if (!connections_init(True
))
1258 if (!locking_init())
1263 if (!W_ERROR_IS_OK(registry_init_full()))
1267 if (!init_svcctl_db())
1271 if (!print_backend_init(smbd_messaging_context()))
1274 if (!init_guest_info()) {
1275 DEBUG(0,("ERROR: failed to setup guest info.\n"));
1279 /* Open the share_info.tdb here, so we don't have to open
1280 after the fork on every single connection. This is a small
1281 performance improvment and reduces the total number of system
1283 if (!share_info_db_init()) {
1284 DEBUG(0,("ERROR: failed to load share info db.\n"));
1288 /* only start the background queue daemon if we are
1289 running as a daemon -- bad things will happen if
1290 smbd is launched via inetd and we fork a copy of
1293 if (is_daemon
&& !interactive
1294 && lp_parm_bool(-1, "smbd", "backgroundqueue", true)) {
1295 start_background_queue();
1302 /* Started from inetd. fd 0 is the socket. */
1303 /* We will abort gracefully when the client or remote system
1305 smbd_set_server_fd(dup(0));
1307 /* close our standard file descriptors */
1308 close_low_fds(False
); /* Don't close stderr */
1315 smbd_setup_sig_chld_handler();
1319 exit_server_cleanly(NULL
);
1323 parent
= talloc_zero(smbd_event_context(), struct smbd_parent_context
);
1325 exit_server("talloc(struct smbd_parent_context) failed");
1327 parent
->interactive
= interactive
;
1329 if (!open_sockets_smbd(parent
, ports
))
1330 exit_server("open_sockets_smbd() failed");
1333 /* make sure we always have a valid stackframe */
1334 frame
= talloc_stackframe();
1336 smbd_parent_loop(parent
);
1338 exit_server_cleanly(NULL
);