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 DEBUG(0, ("Could not find child %d -- ignoring\n", (int)pid
));
284 /****************************************************************************
285 Have we reached the process limit ?
286 ****************************************************************************/
288 static bool allowable_number_of_smbd_processes(void)
290 int max_processes
= lp_max_smbd_processes();
295 return num_children
< max_processes
;
298 static void smbd_sig_chld_handler(struct tevent_context
*ev
,
299 struct tevent_signal
*se
,
308 while ((pid
= sys_waitpid(-1, &status
, WNOHANG
)) > 0) {
309 bool unclean_shutdown
= False
;
311 /* If the child terminated normally, assume
312 it was an unclean shutdown unless the
315 if (WIFEXITED(status
)) {
316 unclean_shutdown
= WEXITSTATUS(status
);
318 /* If the child terminated due to a signal
319 we always assume it was unclean.
321 if (WIFSIGNALED(status
)) {
322 unclean_shutdown
= True
;
324 remove_child_pid(pid
, unclean_shutdown
);
328 static void smbd_setup_sig_chld_handler(void)
330 struct tevent_signal
*se
;
332 se
= tevent_add_signal(smbd_event_context(),
333 smbd_event_context(),
335 smbd_sig_chld_handler
,
338 exit_server("failed to setup SIGCHLD handler");
342 struct smbd_open_socket
;
344 struct smbd_parent_context
{
347 /* the list of listening sockets */
348 struct smbd_open_socket
*sockets
;
351 struct smbd_open_socket
{
352 struct smbd_open_socket
*prev
, *next
;
353 struct smbd_parent_context
*parent
;
355 struct tevent_fd
*fde
;
358 static void smbd_open_socket_close_fn(struct tevent_context
*ev
,
359 struct tevent_fd
*fde
,
363 /* this might be the socket_wrapper swrap_close() */
367 static void smbd_accept_connection(struct tevent_context
*ev
,
368 struct tevent_fd
*fde
,
372 struct smbd_open_socket
*s
= talloc_get_type_abort(private_data
,
373 struct smbd_open_socket
);
374 struct sockaddr_storage addr
;
375 socklen_t in_addrlen
= sizeof(addr
);
378 smbd_set_server_fd(accept(s
->fd
,(struct sockaddr
*)&addr
,&in_addrlen
));
380 if (smbd_server_fd() == -1 && errno
== EINTR
)
383 if (smbd_server_fd() == -1) {
384 DEBUG(0,("open_sockets_smbd: accept: %s\n",
389 if (s
->parent
->interactive
) {
391 exit_server_cleanly("end of interactive mode");
395 if (!allowable_number_of_smbd_processes()) {
396 close(smbd_server_fd());
397 smbd_set_server_fd(-1);
403 NTSTATUS status
= NT_STATUS_OK
;
407 /* Stop zombies, the parent explicitly handles
408 * them, counting worker smbds. */
411 /* close our standard file
413 close_low_fds(False
);
416 * Can't use TALLOC_FREE here. Nulling out the argument to it
417 * would overwrite memory we've just freed.
419 talloc_free(s
->parent
);
422 status
= reinit_after_fork(smbd_messaging_context(),
423 smbd_event_context(), true);
424 if (!NT_STATUS_IS_OK(status
)) {
425 if (NT_STATUS_EQUAL(status
,
426 NT_STATUS_TOO_MANY_OPENED_FILES
)) {
427 DEBUG(0,("child process cannot initialize "
428 "because too many files are open\n"));
431 DEBUG(0,("reinit_after_fork() failed\n"));
432 smb_panic("reinit_after_fork() failed");
435 smbd_setup_sig_term_handler();
436 smbd_setup_sig_hup_handler();
440 exit_server_cleanly("end of child");
442 } else if (pid
< 0) {
443 DEBUG(0,("smbd_accept_connection: sys_fork() failed: %s\n",
447 /* The parent doesn't need this socket */
448 close(smbd_server_fd());
450 /* Sun May 6 18:56:14 2001 ackley@cs.unm.edu:
451 Clear the closed fd info out of server_fd --
452 and more importantly, out of client_fd in
453 util_sock.c, to avoid a possible
454 getpeername failure if we reopen the logs
455 and use %I in the filename.
458 smbd_set_server_fd(-1);
464 /* Force parent to check log size after
465 * spawning child. Fix from
466 * klausr@ITAP.Physik.Uni-Stuttgart.De. The
467 * parent smbd will log to logserver.smb. It
468 * writes only two messages for each child
469 * started/finished. But each child writes,
470 * say, 50 messages also in logserver.smb,
471 * begining with the debug_count of the
472 * parent, before the child opens its own log
473 * file logserver.client. In a worst case
474 * scenario the size of logserver.smb would be
475 * checked after about 50*50=2500 messages
478 force_check_log_size();
481 static bool smbd_open_one_socket(struct smbd_parent_context
*parent
,
482 const struct sockaddr_storage
*ifss
,
485 struct smbd_open_socket
*s
;
487 s
= talloc(parent
, struct smbd_open_socket
);
493 s
->fd
= open_socket_in(SOCK_STREAM
,
495 parent
->sockets
== NULL
? 0 : 2,
499 DEBUG(0,("smbd_open_once_socket: open_socket_in: "
500 "%s\n", strerror(errno
)));
503 * We ignore an error here, as we've done before
508 /* ready to listen */
509 set_socket_options(s
->fd
, "SO_KEEPALIVE");
510 set_socket_options(s
->fd
, lp_socket_options());
512 /* Set server socket to
513 * non-blocking for the accept. */
514 set_blocking(s
->fd
, False
);
516 if (listen(s
->fd
, SMBD_LISTEN_BACKLOG
) == -1) {
517 DEBUG(0,("open_sockets_smbd: listen: "
518 "%s\n", strerror(errno
)));
524 s
->fde
= tevent_add_fd(smbd_event_context(),
526 s
->fd
, TEVENT_FD_READ
,
527 smbd_accept_connection
,
530 DEBUG(0,("open_sockets_smbd: "
531 "tevent_add_fd: %s\n",
537 tevent_fd_set_close_fn(s
->fde
, smbd_open_socket_close_fn
);
539 DLIST_ADD_END(parent
->sockets
, s
, struct smbd_open_socket
*);
544 /****************************************************************************
545 Open the socket communication.
546 ****************************************************************************/
548 static bool open_sockets_smbd(struct smbd_parent_context
*parent
,
549 const char *smb_ports
)
551 int num_interfaces
= iface_count();
554 unsigned dns_port
= 0;
561 smbd_setup_sig_chld_handler();
563 /* use a reasonable default set of ports - listing on 445 and 139 */
565 ports
= lp_smb_ports();
566 if (!ports
|| !*ports
) {
567 ports
= talloc_strdup(talloc_tos(), SMB_PORTS
);
569 ports
= talloc_strdup(talloc_tos(), ports
);
572 ports
= talloc_strdup(talloc_tos(), smb_ports
);
575 if (lp_interfaces() && lp_bind_interfaces_only()) {
576 /* We have been given an interfaces line, and been
577 told to only bind to those interfaces. Create a
578 socket per interface and bind to only these.
581 /* Now open a listen socket for each of the
583 for(i
= 0; i
< num_interfaces
; i
++) {
584 const struct sockaddr_storage
*ifss
=
585 iface_n_sockaddr_storage(i
);
590 DEBUG(0,("open_sockets_smbd: "
591 "interface %d has NULL IP address !\n",
597 next_token_talloc(talloc_tos(),&ptr
, &tok
, " \t,");) {
598 unsigned port
= atoi(tok
);
599 if (port
== 0 || port
> 0xffff) {
603 if (!smbd_open_one_socket(parent
, ifss
, port
)) {
609 /* Just bind to 0.0.0.0 - accept connections
614 const char *sock_addr
= lp_socket_address();
616 const char *sock_ptr
;
618 if (strequal(sock_addr
, "0.0.0.0") ||
619 strequal(sock_addr
, "::")) {
621 sock_addr
= "::,0.0.0.0";
623 sock_addr
= "0.0.0.0";
627 for (sock_ptr
=sock_addr
;
628 next_token_talloc(talloc_tos(), &sock_ptr
, &sock_tok
, " \t,"); ) {
629 for (ptr
=ports
; next_token_talloc(talloc_tos(), &ptr
, &tok
, " \t,"); ) {
630 struct sockaddr_storage ss
;
632 unsigned port
= atoi(tok
);
633 if (port
== 0 || port
> 0xffff) {
637 /* Keep the first port for mDNS service
644 /* open an incoming socket */
645 if (!interpret_string_addr(&ss
, sock_tok
,
646 AI_NUMERICHOST
|AI_PASSIVE
)) {
650 if (!smbd_open_one_socket(parent
, &ss
, port
)) {
657 if (parent
->sockets
== NULL
) {
658 DEBUG(0,("open_sockets_smbd: No "
659 "sockets available to bind to.\n"));
663 /* Setup the main smbd so that we can get messages. Note that
664 do this after starting listening. This is needed as when in
665 clustered mode, ctdb won't allow us to start doing database
666 operations until it has gone thru a full startup, which
667 includes checking to see that smbd is listening. */
668 claim_connection(NULL
,"",
669 FLAG_MSG_GENERAL
|FLAG_MSG_SMBD
|FLAG_MSG_DBWRAP
);
671 /* Listen to messages */
673 messaging_register(smbd_messaging_context(), NULL
,
674 MSG_SMB_SAM_SYNC
, msg_sam_sync
);
675 messaging_register(smbd_messaging_context(), NULL
,
676 MSG_SHUTDOWN
, msg_exit_server
);
677 messaging_register(smbd_messaging_context(), NULL
,
678 MSG_SMB_FILE_RENAME
, msg_file_was_renamed
);
679 messaging_register(smbd_messaging_context(), NULL
,
680 MSG_SMB_CONF_UPDATED
, smb_conf_updated
);
681 messaging_register(smbd_messaging_context(), NULL
,
682 MSG_SMB_STAT_CACHE_DELETE
, smb_stat_cache_delete
);
683 messaging_register(smbd_messaging_context(), NULL
,
684 MSG_DEBUG
, smbd_msg_debug
);
685 brl_register_msgs(smbd_messaging_context());
687 #ifdef CLUSTER_SUPPORT
688 if (lp_clustering()) {
689 ctdbd_register_reconfigure(messaging_ctdbd_connection());
694 messaging_register(smbd_messaging_context(), NULL
,
695 MSG_SMB_INJECT_FAULT
, msg_inject_fault
);
699 #ifdef WITH_DNSSD_SUPPORT
700 smbd_setup_mdns_registration(smbd_event_context(),
703 #ifdef WITH_AVAHI_SUPPORT
706 avahi_conn
= avahi_start_register(
707 smbd_event_context(), smbd_event_context(), dns_port
);
708 if (avahi_conn
== NULL
) {
709 DEBUG(10, ("avahi_start_register failed\n"));
717 static void smbd_parent_loop(struct smbd_parent_context
*parent
)
719 /* now accept incoming connections - forking a new process
720 for each incoming connection */
721 DEBUG(2,("waiting for connections\n"));
724 TALLOC_CTX
*frame
= talloc_stackframe();
726 ret
= tevent_loop_once(smbd_event_context());
728 exit_server_cleanly("tevent_loop_once() error");
734 /* NOTREACHED return True; */
737 /****************************************************************************
739 **************************************************************************/
740 void reload_printers(void)
743 int n_services
= lp_numservices();
744 int pnum
= lp_servicenumber(PRINTERS_NAME
);
749 /* remove stale printers */
750 for (snum
= 0; snum
< n_services
; snum
++) {
751 /* avoid removing PRINTERS_NAME or non-autoloaded printers */
752 if (snum
== pnum
|| !(lp_snum_ok(snum
) && lp_print_ok(snum
) &&
753 lp_autoloaded(snum
)))
756 pname
= lp_printername(snum
);
757 if (!pcap_printername_ok(pname
)) {
758 DEBUG(3, ("removing stale printer %s\n", pname
));
760 if (is_printer_published(NULL
, snum
, NULL
))
761 nt_printer_publish(NULL
, snum
, DSPRINT_UNPUBLISH
);
762 del_a_printer(pname
);
763 lp_killservice(snum
);
770 /****************************************************************************
771 Reload the services file.
772 **************************************************************************/
774 bool reload_services(bool test
)
779 char *fname
= lp_configfile();
780 if (file_exist(fname
) &&
781 !strcsequal(fname
, get_dyn_CONFIGFILE())) {
782 set_dyn_CONFIGFILE(fname
);
789 if (test
&& !lp_file_list_changed())
792 lp_killunused(conn_snum_used
);
794 ret
= lp_load(get_dyn_CONFIGFILE(), False
, False
, True
, True
);
798 /* perhaps the config filename is now set */
800 reload_services(True
);
806 if (smbd_server_fd() != -1) {
807 set_socket_options(smbd_server_fd(),"SO_KEEPALIVE");
808 set_socket_options(smbd_server_fd(), lp_socket_options());
811 mangle_reset_cache();
814 /* this forces service parameters to be flushed */
815 set_current_service(NULL
,0,True
);
820 /****************************************************************************
822 ****************************************************************************/
824 /* Reasons for shutting down a server process. */
825 enum server_exit_reason
{ SERVER_EXIT_NORMAL
, SERVER_EXIT_ABNORMAL
};
827 static void exit_server_common(enum server_exit_reason how
,
828 const char *const reason
) _NORETURN_
;
830 static void exit_server_common(enum server_exit_reason how
,
831 const char *const reason
)
833 bool had_open_conn
= false;
834 struct smbd_server_connection
*sconn
= smbd_server_conn
;
838 exit_firsttime
= false;
840 change_to_root_user();
842 if (sconn
&& sconn
->smb1
.negprot
.auth_context
) {
843 struct auth_context
*a
= sconn
->smb1
.negprot
.auth_context
;
844 a
->free(&sconn
->smb1
.negprot
.auth_context
);
848 had_open_conn
= conn_close_all(sconn
);
849 invalidate_all_vuids(sconn
);
852 /* 3 second timeout. */
853 print_notify_send_messages(smbd_messaging_context(), 3);
855 /* delete our entry in the connections database. */
856 yield_connection(NULL
,"");
859 if (dcelogin_atmost_once
) {
865 /* Destroy Samba DMAPI session only if we are master smbd process */
867 if (!dmapi_destroy_session()) {
868 DEBUG(0,("Unable to close Samba DMAPI session\n"));
877 * we need to force the order of freeing the following,
878 * because smbd_msg_ctx is not a talloc child of smbd_server_conn.
881 TALLOC_FREE(smbd_server_conn
);
882 TALLOC_FREE(smbd_msg_ctx
);
883 TALLOC_FREE(smbd_event_ctx
);
885 if (how
!= SERVER_EXIT_NORMAL
) {
886 int oldlevel
= DEBUGLEVEL
;
891 DEBUG(0,("Abnormal server exit: %s\n",
892 reason
? reason
: "no explanation provided"));
897 DEBUGLEVEL
= oldlevel
;
901 DEBUG(3,("Server exit (%s)\n",
902 (reason
? reason
: "normal exit")));
906 gencache_stabilize();
909 /* if we had any open SMB connections when we exited then we
910 need to tell the parent smbd so that it can trigger a retry
911 of any locks we may have been holding or open files we were
920 void exit_server(const char *const explanation
)
922 exit_server_common(SERVER_EXIT_ABNORMAL
, explanation
);
925 void exit_server_cleanly(const char *const explanation
)
927 exit_server_common(SERVER_EXIT_NORMAL
, explanation
);
930 void exit_server_fault(void)
932 exit_server("critical server fault");
935 /****************************************************************************
936 Initialise connect, service and file structs.
937 ****************************************************************************/
939 static bool init_structs(void )
942 * Set the machine NETBIOS name if not already
943 * set from the config file.
957 /****************************************************************************
959 ****************************************************************************/
961 /* Declare prototype for build_options() to avoid having to run it through
962 mkproto.h. Mixing $(builddir) and $(srcdir) source files in the current
963 prototype generation system is too complicated. */
965 extern void build_options(bool screen
);
967 int main(int argc
,const char *argv
[])
969 /* shall I run as a daemon */
970 bool is_daemon
= false;
971 bool interactive
= false;
973 bool no_process_group
= false;
974 bool log_stdout
= false;
976 char *profile_level
= NULL
;
979 bool print_build_options
= False
;
984 OPT_NO_PROCESS_GROUP
,
987 struct poptOption long_options
[] = {
989 {"daemon", 'D', POPT_ARG_NONE
, NULL
, OPT_DAEMON
, "Become a daemon (default)" },
990 {"interactive", 'i', POPT_ARG_NONE
, NULL
, OPT_INTERACTIVE
, "Run interactive (not a daemon)"},
991 {"foreground", 'F', POPT_ARG_NONE
, NULL
, OPT_FORK
, "Run daemon in foreground (for daemontools, etc.)" },
992 {"no-process-group", '\0', POPT_ARG_NONE
, NULL
, OPT_NO_PROCESS_GROUP
, "Don't create a new process group" },
993 {"log-stdout", 'S', POPT_ARG_NONE
, NULL
, OPT_LOG_STDOUT
, "Log to stdout" },
994 {"build-options", 'b', POPT_ARG_NONE
, NULL
, 'b', "Print build options" },
995 {"port", 'p', POPT_ARG_STRING
, &ports
, 0, "Listen on the specified ports"},
996 {"profiling-level", 'P', POPT_ARG_STRING
, &profile_level
, 0, "Set profiling level","PROFILE_LEVEL"},
998 POPT_COMMON_DYNCONFIG
1001 struct smbd_parent_context
*parent
= NULL
;
1002 TALLOC_CTX
*frame
= talloc_stackframe(); /* Setup tos. */
1004 smbd_init_globals();
1008 #ifdef HAVE_SET_AUTH_PARAMETERS
1009 set_auth_parameters(argc
,argv
);
1012 pc
= poptGetContext("smbd", argc
, argv
, long_options
, 0);
1013 while((opt
= poptGetNextOpt(pc
)) != -1) {
1018 case OPT_INTERACTIVE
:
1024 case OPT_NO_PROCESS_GROUP
:
1025 no_process_group
= true;
1027 case OPT_LOG_STDOUT
:
1031 print_build_options
= True
;
1034 d_fprintf(stderr
, "\nInvalid option %s: %s\n\n",
1035 poptBadOption(pc
, 0), poptStrerror(opt
));
1036 poptPrintUsage(pc
, stderr
, 0);
1040 poptFreeContext(pc
);
1047 setup_logging(argv
[0],log_stdout
);
1049 if (print_build_options
) {
1050 build_options(True
); /* Display output to screen as well as debug */
1057 /* needed for SecureWare on SCO */
1063 set_remote_machine_name("smbd", False
);
1065 if (interactive
&& (DEBUGLEVEL
>= 9)) {
1066 talloc_enable_leak_report();
1069 if (log_stdout
&& Fork
) {
1070 DEBUG(0,("ERROR: Can't log to stdout (-S) unless daemon is in foreground (-F) or interactive (-i)\n"));
1074 /* we want to re-seed early to prevent time delays causing
1075 client problems at a later date. (tridge) */
1076 generate_random_buffer(NULL
, 0);
1078 /* make absolutely sure we run as root - to handle cases where people
1079 are crazy enough to have it setuid */
1081 gain_root_privilege();
1082 gain_root_group_privilege();
1085 * Ensure we have CAP_KILL capability set on Linux,
1086 * where we need this to communicate with threads.
1087 * This is inherited by new threads, but not by new
1088 * processes across exec().
1090 set_effective_capability(KILL_CAPABILITY
);
1092 fault_setup((void (*)(void *))exit_server_fault
);
1093 dump_core_setup("smbd");
1095 /* we are never interested in SIGPIPE */
1096 BlockSignals(True
,SIGPIPE
);
1099 /* we are never interested in SIGFPE */
1100 BlockSignals(True
,SIGFPE
);
1103 #if defined(SIGUSR2)
1104 /* We are no longer interested in USR2 */
1105 BlockSignals(True
,SIGUSR2
);
1108 /* POSIX demands that signals are inherited. If the invoking process has
1109 * these signals masked, we will have problems, as we won't recieve them. */
1110 BlockSignals(False
, SIGHUP
);
1111 BlockSignals(False
, SIGUSR1
);
1112 BlockSignals(False
, SIGTERM
);
1114 /* Ensure we leave no zombies until we
1115 * correctly set up child handling below. */
1119 /* we want total control over the permissions on created files,
1120 so set our umask to 0 */
1127 DEBUG(0,("smbd version %s started.\n", samba_version_string()));
1128 DEBUGADD(0,("%s\n", COPYRIGHT_STARTUP_MESSAGE
));
1130 DEBUG(2,("uid=%d gid=%d euid=%d egid=%d\n",
1131 (int)getuid(),(int)getgid(),(int)geteuid(),(int)getegid()));
1133 /* Output the build options to the debug log */
1134 build_options(False
);
1136 if (sizeof(uint16
) < 2 || sizeof(uint32
) < 4) {
1137 DEBUG(0,("ERROR: Samba is not configured correctly for the word size on your machine\n"));
1141 if (!lp_load_initial_only(get_dyn_CONFIGFILE())) {
1142 DEBUG(0, ("error opening config file\n"));
1146 if (smbd_messaging_context() == NULL
)
1149 if (!reload_services(False
))
1155 if (!profile_setup(smbd_messaging_context(), False
)) {
1156 DEBUG(0,("ERROR: failed to setup profiling\n"));
1159 if (profile_level
!= NULL
) {
1160 int pl
= atoi(profile_level
);
1161 struct server_id src
;
1163 DEBUG(1, ("setting profiling level: %s\n",profile_level
));
1165 set_profile_level(pl
, src
);
1169 DEBUG(3,( "loaded services\n"));
1171 if (!is_daemon
&& !is_a_socket(0)) {
1173 DEBUG(0,("standard input is not a socket, assuming -D option\n"));
1176 * Setting is_daemon here prevents us from eventually calling
1177 * the open_sockets_inetd()
1183 if (is_daemon
&& !interactive
) {
1184 DEBUG( 3, ( "Becoming a daemon.\n" ) );
1185 become_daemon(Fork
, no_process_group
);
1190 * If we're interactive we want to set our own process group for
1191 * signal management.
1193 if (interactive
&& !no_process_group
)
1194 setpgid( (pid_t
)0, (pid_t
)0);
1197 if (!directory_exist(lp_lockdir()))
1198 mkdir(lp_lockdir(), 0755);
1201 pidfile_create("smbd");
1203 if (!NT_STATUS_IS_OK(reinit_after_fork(smbd_messaging_context(),
1204 smbd_event_context(), false))) {
1205 DEBUG(0,("reinit_after_fork() failed\n"));
1209 smbd_setup_sig_term_handler();
1210 smbd_setup_sig_hup_handler();
1212 /* Setup all the TDB's - including CLEAR_IF_FIRST tdb's. */
1214 if (smbd_memcache() == NULL
) {
1218 memcache_set_global(smbd_memcache());
1220 /* Initialise the password backed before the global_sam_sid
1221 to ensure that we fetch from ldap before we make a domain sid up */
1223 if(!initialize_password_db(False
, smbd_event_context()))
1226 if (!secrets_init()) {
1227 DEBUG(0, ("ERROR: smbd can not open secrets.tdb\n"));
1231 if(!get_global_sam_sid()) {
1232 DEBUG(0,("ERROR: Samba cannot create a SAM SID.\n"));
1236 if (!session_init())
1239 if (!connections_init(True
))
1242 if (!locking_init())
1247 if (!W_ERROR_IS_OK(registry_init_full()))
1251 if (!init_svcctl_db())
1255 if (!print_backend_init(smbd_messaging_context()))
1258 if (!init_guest_info()) {
1259 DEBUG(0,("ERROR: failed to setup guest info.\n"));
1263 /* Open the share_info.tdb here, so we don't have to open
1264 after the fork on every single connection. This is a small
1265 performance improvment and reduces the total number of system
1267 if (!share_info_db_init()) {
1268 DEBUG(0,("ERROR: failed to load share info db.\n"));
1272 /* only start the background queue daemon if we are
1273 running as a daemon -- bad things will happen if
1274 smbd is launched via inetd and we fork a copy of
1277 if (is_daemon
&& !interactive
1278 && lp_parm_bool(-1, "smbd", "backgroundqueue", true)) {
1279 start_background_queue();
1286 /* Started from inetd. fd 0 is the socket. */
1287 /* We will abort gracefully when the client or remote system
1289 smbd_set_server_fd(dup(0));
1291 /* close our standard file descriptors */
1292 close_low_fds(False
); /* Don't close stderr */
1299 smbd_setup_sig_chld_handler();
1303 exit_server_cleanly(NULL
);
1307 parent
= talloc_zero(smbd_event_context(), struct smbd_parent_context
);
1309 exit_server("talloc(struct smbd_parent_context) failed");
1311 parent
->interactive
= interactive
;
1313 if (!open_sockets_smbd(parent
, ports
))
1314 exit_server("open_sockets_smbd() failed");
1318 smbd_parent_loop(parent
);
1320 exit_server_cleanly(NULL
);