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 "popt_common.h"
26 #include "smbd/globals.h"
27 #include "librpc/gen_ndr/messaging.h"
29 #include "registry/reg_init_full.h"
30 #include "libcli/auth/schannel.h"
33 #include "ctdbd_conn.h"
34 #include "printing/printer_list.h"
35 #include "rpc_server/srv_rpc_register.h"
38 extern int dcelogin_atmost_once
;
41 static void smbd_set_server_fd(int fd
)
43 struct smbd_server_connection
*sconn
= smbd_server_conn
;
44 char addr
[INET6_ADDRSTRLEN
];
50 * Initialize sconn->client_id: If we can't find the client's
51 * name, default to its address.
54 client_addr(fd
, sconn
->client_id
.addr
, sizeof(sconn
->client_id
.addr
));
56 name
= client_name(sconn
->sock
);
57 if (strcmp(name
, "UNKNOWN") != 0) {
58 name
= talloc_strdup(sconn
, name
);
62 sconn
->client_id
.name
=
63 (name
!= NULL
) ? name
: sconn
->client_id
.addr
;
65 sub_set_socket_ids(sconn
->client_id
.addr
, sconn
->client_id
.name
,
66 client_socket_addr(sconn
->sock
, addr
,
70 struct event_context
*smbd_event_context(void)
72 return server_event_context();
75 /*******************************************************************
76 What to do when smb.conf is updated.
77 ********************************************************************/
79 static void smb_conf_updated(struct messaging_context
*msg
,
82 struct server_id server_id
,
85 DEBUG(10,("smb_conf_updated: Got message saying smb.conf was "
86 "updated. Reloading.\n"));
87 change_to_root_user();
88 reload_services(msg
, smbd_server_conn
->sock
, False
);
90 pcap_cache_reload(server_event_context(), msg
,
91 &reload_pcap_change_notify
);
95 /*******************************************************************
96 What to do when printcap is updated.
97 ********************************************************************/
99 static void smb_pcap_updated(struct messaging_context
*msg
,
102 struct server_id server_id
,
105 DEBUG(10,("Got message saying pcap was updated. Reloading.\n"));
106 change_to_root_user();
107 reload_printers(server_event_context(), msg
);
110 /*******************************************************************
111 Delete a statcache entry.
112 ********************************************************************/
114 static void smb_stat_cache_delete(struct messaging_context
*msg
,
117 struct server_id server_id
,
120 const char *name
= (const char *)data
->data
;
121 DEBUG(10,("smb_stat_cache_delete: delete name %s\n", name
));
122 stat_cache_delete(name
);
125 /****************************************************************************
126 Send a SIGTERM to our process group.
127 *****************************************************************************/
129 static void killkids(void)
131 if(am_parent
) kill(0,SIGTERM
);
134 /****************************************************************************
135 Process a sam sync message - not sure whether to do this here or
137 ****************************************************************************/
139 static void msg_sam_sync(struct messaging_context
*msg
,
142 struct server_id server_id
,
145 DEBUG(10, ("** sam sync message received, ignoring\n"));
148 static void msg_exit_server(struct messaging_context
*msg
,
151 struct server_id server_id
,
154 DEBUG(3, ("got a SHUTDOWN message\n"));
155 exit_server_cleanly(NULL
);
159 static void msg_inject_fault(struct messaging_context
*msg
,
162 struct server_id src
,
167 if (data
->length
!= sizeof(sig
)) {
168 DEBUG(0, ("Process %s sent bogus signal injection request\n",
169 procid_str_static(&src
)));
173 sig
= *(int *)data
->data
;
175 exit_server("internal error injected");
180 DEBUG(0, ("Process %s requested injection of signal %d (%s)\n",
181 procid_str_static(&src
), sig
, strsignal(sig
)));
183 DEBUG(0, ("Process %s requested injection of signal %d\n",
184 procid_str_static(&src
), sig
));
187 kill(sys_getpid(), sig
);
189 #endif /* DEVELOPER */
192 * Parent smbd process sets its own debug level first and then
193 * sends a message to all the smbd children to adjust their debug
194 * level to that of the parent.
197 static void smbd_msg_debug(struct messaging_context
*msg_ctx
,
200 struct server_id server_id
,
203 struct child_pid
*child
;
205 debug_message(msg_ctx
, private_data
, MSG_DEBUG
, server_id
, data
);
207 for (child
= children
; child
!= NULL
; child
= child
->next
) {
208 messaging_send_buf(msg_ctx
, pid_to_procid(child
->pid
),
211 strlen((char *) data
->data
) + 1);
215 static void add_child_pid(pid_t pid
)
217 struct child_pid
*child
;
219 child
= SMB_MALLOC_P(struct child_pid
);
221 DEBUG(0, ("Could not add child struct -- malloc failed\n"));
225 DLIST_ADD(children
, child
);
230 at most every smbd:cleanuptime seconds (default 20), we scan the BRL
231 and locking database for entries to cleanup. As a side effect this
232 also cleans up dead entries in the connections database (due to the
233 traversal in message_send_all()
235 Using a timer for this prevents a flood of traversals when a large
236 number of clients disconnect at the same time (perhaps due to a
240 static void cleanup_timeout_fn(struct event_context
*event_ctx
,
241 struct timed_event
*te
,
245 struct timed_event
**cleanup_te
= (struct timed_event
**)private_data
;
247 DEBUG(1,("Cleaning up brl and lock database after unclean shutdown\n"));
248 message_send_all(smbd_messaging_context(), MSG_SMB_UNLOCK
, NULL
, 0, NULL
);
249 messaging_send_buf(smbd_messaging_context(), procid_self(),
250 MSG_SMB_BRL_VALIDATE
, NULL
, 0);
251 /* mark the cleanup as having been done */
252 (*cleanup_te
) = NULL
;
255 static void remove_child_pid(pid_t pid
, bool unclean_shutdown
)
257 struct child_pid
*child
;
258 static struct timed_event
*cleanup_te
;
259 struct server_id child_id
;
261 if (unclean_shutdown
) {
262 /* a child terminated uncleanly so tickle all
263 processes to see if they can grab any of the
266 DEBUG(3,(__location__
" Unclean shutdown of pid %u\n",
269 /* call the cleanup timer, but not too often */
270 int cleanup_time
= lp_parm_int(-1, "smbd", "cleanuptime", 20);
271 cleanup_te
= event_add_timed(smbd_event_context(), NULL
,
272 timeval_current_ofs(cleanup_time
, 0),
275 DEBUG(1,("Scheduled cleanup of brl and lock database after unclean shutdown\n"));
279 child_id
= procid_self(); /* Just initialize pid and potentially vnn */
282 if (!serverid_deregister(child_id
)) {
283 DEBUG(1, ("Could not remove pid %d from serverid.tdb\n",
287 for (child
= children
; child
!= NULL
; child
= child
->next
) {
288 if (child
->pid
== pid
) {
289 struct child_pid
*tmp
= child
;
290 DLIST_REMOVE(children
, child
);
297 /* not all forked child processes are added to the children list */
298 DEBUG(1, ("Could not find child %d -- ignoring\n", (int)pid
));
301 /****************************************************************************
302 Have we reached the process limit ?
303 ****************************************************************************/
305 static bool allowable_number_of_smbd_processes(void)
307 int max_processes
= lp_max_smbd_processes();
312 return num_children
< max_processes
;
315 static void smbd_sig_chld_handler(struct tevent_context
*ev
,
316 struct tevent_signal
*se
,
325 while ((pid
= sys_waitpid(-1, &status
, WNOHANG
)) > 0) {
326 bool unclean_shutdown
= False
;
328 /* If the child terminated normally, assume
329 it was an unclean shutdown unless the
332 if (WIFEXITED(status
)) {
333 unclean_shutdown
= WEXITSTATUS(status
);
335 /* If the child terminated due to a signal
336 we always assume it was unclean.
338 if (WIFSIGNALED(status
)) {
339 unclean_shutdown
= True
;
341 remove_child_pid(pid
, unclean_shutdown
);
345 static void smbd_setup_sig_chld_handler(void)
347 struct tevent_signal
*se
;
349 se
= tevent_add_signal(smbd_event_context(),
350 smbd_event_context(),
352 smbd_sig_chld_handler
,
355 exit_server("failed to setup SIGCHLD handler");
359 struct smbd_open_socket
;
361 struct smbd_parent_context
{
364 /* the list of listening sockets */
365 struct smbd_open_socket
*sockets
;
368 struct smbd_open_socket
{
369 struct smbd_open_socket
*prev
, *next
;
370 struct smbd_parent_context
*parent
;
372 struct tevent_fd
*fde
;
375 static void smbd_open_socket_close_fn(struct tevent_context
*ev
,
376 struct tevent_fd
*fde
,
380 /* this might be the socket_wrapper swrap_close() */
384 static void smbd_accept_connection(struct tevent_context
*ev
,
385 struct tevent_fd
*fde
,
389 struct smbd_open_socket
*s
= talloc_get_type_abort(private_data
,
390 struct smbd_open_socket
);
391 struct sockaddr_storage addr
;
392 socklen_t in_addrlen
= sizeof(addr
);
397 fd
= accept(s
->fd
, (struct sockaddr
*)(void *)&addr
,&in_addrlen
);
398 smbd_set_server_fd(fd
);
400 if (fd
== -1 && errno
== EINTR
)
404 DEBUG(0,("open_sockets_smbd: accept: %s\n",
409 if (s
->parent
->interactive
) {
410 smbd_process(smbd_server_conn
);
411 exit_server_cleanly("end of interactive mode");
415 if (!allowable_number_of_smbd_processes()) {
417 smbd_set_server_fd(-1);
422 * Generate a unique id in the parent process so that we use
423 * the global random state in the parent.
425 generate_random_buffer((uint8_t *)&unique_id
, sizeof(unique_id
));
429 NTSTATUS status
= NT_STATUS_OK
;
434 set_my_unique_id(unique_id
);
436 /* Stop zombies, the parent explicitly handles
437 * them, counting worker smbds. */
440 /* close our standard file
442 close_low_fds(False
);
445 * Can't use TALLOC_FREE here. Nulling out the argument to it
446 * would overwrite memory we've just freed.
448 talloc_free(s
->parent
);
451 status
= reinit_after_fork(smbd_messaging_context(),
452 smbd_event_context(), procid_self(),
454 if (!NT_STATUS_IS_OK(status
)) {
455 if (NT_STATUS_EQUAL(status
,
456 NT_STATUS_TOO_MANY_OPENED_FILES
)) {
457 DEBUG(0,("child process cannot initialize "
458 "because too many files are open\n"));
461 DEBUG(0,("reinit_after_fork() failed\n"));
462 smb_panic("reinit_after_fork() failed");
465 smbd_setup_sig_term_handler();
466 smbd_setup_sig_hup_handler(server_event_context(),
467 server_messaging_context());
469 if (!serverid_register(procid_self(),
470 FLAG_MSG_GENERAL
|FLAG_MSG_SMBD
472 |FLAG_MSG_PRINT_GENERAL
)) {
473 exit_server_cleanly("Could not register myself in "
477 smbd_process(smbd_server_conn
);
479 exit_server_cleanly("end of child");
484 DEBUG(0,("smbd_accept_connection: sys_fork() failed: %s\n",
488 /* The parent doesn't need this socket */
491 /* Sun May 6 18:56:14 2001 ackley@cs.unm.edu:
492 Clear the closed fd info out of server_fd --
493 and more importantly, out of client_fd in
494 util_sock.c, to avoid a possible
495 getpeername failure if we reopen the logs
496 and use %I in the filename.
499 smbd_set_server_fd(-1);
505 /* Force parent to check log size after
506 * spawning child. Fix from
507 * klausr@ITAP.Physik.Uni-Stuttgart.De. The
508 * parent smbd will log to logserver.smb. It
509 * writes only two messages for each child
510 * started/finished. But each child writes,
511 * say, 50 messages also in logserver.smb,
512 * begining with the debug_count of the
513 * parent, before the child opens its own log
514 * file logserver.client. In a worst case
515 * scenario the size of logserver.smb would be
516 * checked after about 50*50=2500 messages
519 force_check_log_size();
522 static bool smbd_open_one_socket(struct smbd_parent_context
*parent
,
523 const struct sockaddr_storage
*ifss
,
526 struct smbd_open_socket
*s
;
528 s
= talloc(parent
, struct smbd_open_socket
);
534 s
->fd
= open_socket_in(SOCK_STREAM
,
536 parent
->sockets
== NULL
? 0 : 2,
540 DEBUG(0,("smbd_open_once_socket: open_socket_in: "
541 "%s\n", strerror(errno
)));
544 * We ignore an error here, as we've done before
549 /* ready to listen */
550 set_socket_options(s
->fd
, "SO_KEEPALIVE");
551 set_socket_options(s
->fd
, lp_socket_options());
553 /* Set server socket to
554 * non-blocking for the accept. */
555 set_blocking(s
->fd
, False
);
557 if (listen(s
->fd
, SMBD_LISTEN_BACKLOG
) == -1) {
558 DEBUG(0,("open_sockets_smbd: listen: "
559 "%s\n", strerror(errno
)));
565 s
->fde
= tevent_add_fd(smbd_event_context(),
567 s
->fd
, TEVENT_FD_READ
,
568 smbd_accept_connection
,
571 DEBUG(0,("open_sockets_smbd: "
572 "tevent_add_fd: %s\n",
578 tevent_fd_set_close_fn(s
->fde
, smbd_open_socket_close_fn
);
580 DLIST_ADD_END(parent
->sockets
, s
, struct smbd_open_socket
*);
585 static bool smbd_parent_housekeeping(const struct timeval
*now
, void *private_data
)
587 time_t printcap_cache_time
= (time_t)lp_printcap_cache_time();
588 time_t t
= time_mono(NULL
);
590 DEBUG(5, ("parent housekeeping\n"));
592 /* if periodic printcap rescan is enabled, see if it's time to reload */
593 if ((printcap_cache_time
!= 0)
594 && (t
>= (last_printer_reload_time
+ printcap_cache_time
))) {
595 DEBUG( 3,( "Printcap cache time expired.\n"));
596 pcap_cache_reload(server_event_context(),
597 smbd_messaging_context(),
598 &reload_pcap_change_notify
);
599 last_printer_reload_time
= t
;
605 /****************************************************************************
606 Open the socket communication.
607 ****************************************************************************/
609 static bool open_sockets_smbd(struct smbd_parent_context
*parent
,
610 struct messaging_context
*msg_ctx
,
611 const char *smb_ports
)
613 int num_interfaces
= iface_count();
616 unsigned dns_port
= 0;
623 smbd_setup_sig_chld_handler();
625 /* use a reasonable default set of ports - listing on 445 and 139 */
627 ports
= lp_smb_ports();
628 if (!ports
|| !*ports
) {
629 ports
= talloc_strdup(talloc_tos(), SMB_PORTS
);
631 ports
= talloc_strdup(talloc_tos(), ports
);
634 ports
= talloc_strdup(talloc_tos(), smb_ports
);
637 if (lp_interfaces() && lp_bind_interfaces_only()) {
638 /* We have been given an interfaces line, and been
639 told to only bind to those interfaces. Create a
640 socket per interface and bind to only these.
643 /* Now open a listen socket for each of the
645 for(i
= 0; i
< num_interfaces
; i
++) {
646 const struct sockaddr_storage
*ifss
=
647 iface_n_sockaddr_storage(i
);
652 DEBUG(0,("open_sockets_smbd: "
653 "interface %d has NULL IP address !\n",
659 next_token_talloc(talloc_tos(),&ptr
, &tok
, " \t,");) {
660 unsigned port
= atoi(tok
);
661 if (port
== 0 || port
> 0xffff) {
665 if (!smbd_open_one_socket(parent
, ifss
, port
)) {
671 /* Just bind to 0.0.0.0 - accept connections
676 const char *sock_addr
= lp_socket_address();
678 const char *sock_ptr
;
680 if (strequal(sock_addr
, "0.0.0.0") ||
681 strequal(sock_addr
, "::")) {
683 sock_addr
= "::,0.0.0.0";
685 sock_addr
= "0.0.0.0";
689 for (sock_ptr
=sock_addr
;
690 next_token_talloc(talloc_tos(), &sock_ptr
, &sock_tok
, " \t,"); ) {
691 for (ptr
=ports
; next_token_talloc(talloc_tos(), &ptr
, &tok
, " \t,"); ) {
692 struct sockaddr_storage ss
;
694 unsigned port
= atoi(tok
);
695 if (port
== 0 || port
> 0xffff) {
699 /* Keep the first port for mDNS service
706 /* open an incoming socket */
707 if (!interpret_string_addr(&ss
, sock_tok
,
708 AI_NUMERICHOST
|AI_PASSIVE
)) {
712 if (!smbd_open_one_socket(parent
, &ss
, port
)) {
719 if (parent
->sockets
== NULL
) {
720 DEBUG(0,("open_sockets_smbd: No "
721 "sockets available to bind to.\n"));
725 /* Setup the main smbd so that we can get messages. Note that
726 do this after starting listening. This is needed as when in
727 clustered mode, ctdb won't allow us to start doing database
728 operations until it has gone thru a full startup, which
729 includes checking to see that smbd is listening. */
731 if (!serverid_register(procid_self(),
732 FLAG_MSG_GENERAL
|FLAG_MSG_SMBD
734 DEBUG(0, ("open_sockets_smbd: Failed to register "
735 "myself in serverid.tdb\n"));
739 if (!(event_add_idle(smbd_event_context(), NULL
,
740 timeval_set(SMBD_HOUSEKEEPING_INTERVAL
, 0),
741 "parent_housekeeping", smbd_parent_housekeeping
,
743 DEBUG(0, ("Could not add parent_housekeeping event\n"));
747 /* Listen to messages */
749 messaging_register(msg_ctx
, NULL
, MSG_SMB_SAM_SYNC
, msg_sam_sync
);
750 messaging_register(msg_ctx
, NULL
, MSG_SHUTDOWN
, msg_exit_server
);
751 messaging_register(msg_ctx
, NULL
, MSG_SMB_FILE_RENAME
,
752 msg_file_was_renamed
);
753 messaging_register(msg_ctx
, NULL
, MSG_SMB_CONF_UPDATED
,
755 messaging_register(msg_ctx
, NULL
, MSG_SMB_STAT_CACHE_DELETE
,
756 smb_stat_cache_delete
);
757 messaging_register(msg_ctx
, NULL
, MSG_DEBUG
, smbd_msg_debug
);
758 messaging_register(msg_ctx
, NULL
, MSG_PRINTER_PCAP
, smb_pcap_updated
);
759 brl_register_msgs(msg_ctx
);
761 msg_idmap_register_msgs(msg_ctx
);
763 #ifdef CLUSTER_SUPPORT
764 if (lp_clustering()) {
765 ctdbd_register_reconfigure(messaging_ctdbd_connection());
770 messaging_register(msg_ctx
, NULL
, MSG_SMB_INJECT_FAULT
,
774 if (lp_multicast_dns_register() && (dns_port
!= 0)) {
775 #ifdef WITH_DNSSD_SUPPORT
776 smbd_setup_mdns_registration(smbd_event_context(),
779 #ifdef WITH_AVAHI_SUPPORT
782 avahi_conn
= avahi_start_register(
783 smbd_event_context(), smbd_event_context(), dns_port
);
784 if (avahi_conn
== NULL
) {
785 DEBUG(10, ("avahi_start_register failed\n"));
793 static void smbd_parent_loop(struct smbd_parent_context
*parent
)
795 /* now accept incoming connections - forking a new process
796 for each incoming connection */
797 DEBUG(2,("waiting for connections\n"));
800 TALLOC_CTX
*frame
= talloc_stackframe();
802 ret
= tevent_loop_once(smbd_event_context());
804 exit_server_cleanly("tevent_loop_once() error");
810 /* NOTREACHED return True; */
814 /****************************************************************************
815 Initialise connect, service and file structs.
816 ****************************************************************************/
818 static bool init_structs(void )
821 * Set the machine NETBIOS name if not already
822 * set from the config file.
834 /****************************************************************************
836 ****************************************************************************/
838 /* Declare prototype for build_options() to avoid having to run it through
839 mkproto.h. Mixing $(builddir) and $(srcdir) source files in the current
840 prototype generation system is too complicated. */
842 extern void build_options(bool screen
);
844 int main(int argc
,const char *argv
[])
846 /* shall I run as a daemon */
847 bool is_daemon
= false;
848 bool interactive
= false;
850 bool no_process_group
= false;
851 bool log_stdout
= false;
853 char *profile_level
= NULL
;
856 bool print_build_options
= False
;
861 OPT_NO_PROCESS_GROUP
,
864 struct poptOption long_options
[] = {
866 {"daemon", 'D', POPT_ARG_NONE
, NULL
, OPT_DAEMON
, "Become a daemon (default)" },
867 {"interactive", 'i', POPT_ARG_NONE
, NULL
, OPT_INTERACTIVE
, "Run interactive (not a daemon)"},
868 {"foreground", 'F', POPT_ARG_NONE
, NULL
, OPT_FORK
, "Run daemon in foreground (for daemontools, etc.)" },
869 {"no-process-group", '\0', POPT_ARG_NONE
, NULL
, OPT_NO_PROCESS_GROUP
, "Don't create a new process group" },
870 {"log-stdout", 'S', POPT_ARG_NONE
, NULL
, OPT_LOG_STDOUT
, "Log to stdout" },
871 {"build-options", 'b', POPT_ARG_NONE
, NULL
, 'b', "Print build options" },
872 {"port", 'p', POPT_ARG_STRING
, &ports
, 0, "Listen on the specified ports"},
873 {"profiling-level", 'P', POPT_ARG_STRING
, &profile_level
, 0, "Set profiling level","PROFILE_LEVEL"},
875 POPT_COMMON_DYNCONFIG
878 struct smbd_parent_context
*parent
= NULL
;
884 * Do this before any other talloc operation
886 talloc_enable_null_tracking();
887 frame
= talloc_stackframe();
891 /* Initialize the event context, it will panic on error */
892 smbd_event_context();
898 #ifdef HAVE_SET_AUTH_PARAMETERS
899 set_auth_parameters(argc
,argv
);
902 pc
= poptGetContext("smbd", argc
, argv
, long_options
, 0);
903 while((opt
= poptGetNextOpt(pc
)) != -1) {
908 case OPT_INTERACTIVE
:
914 case OPT_NO_PROCESS_GROUP
:
915 no_process_group
= true;
921 print_build_options
= True
;
924 d_fprintf(stderr
, "\nInvalid option %s: %s\n\n",
925 poptBadOption(pc
, 0), poptStrerror(opt
));
926 poptPrintUsage(pc
, stderr
, 0);
938 setup_logging(argv
[0], DEBUG_STDOUT
);
940 setup_logging(argv
[0], DEBUG_FILE
);
943 if (print_build_options
) {
944 build_options(True
); /* Display output to screen as well as debug */
949 /* needed for SecureWare on SCO */
953 set_remote_machine_name("smbd", False
);
955 if (interactive
&& (DEBUGLEVEL
>= 9)) {
956 talloc_enable_leak_report();
959 if (log_stdout
&& Fork
) {
960 DEBUG(0,("ERROR: Can't log to stdout (-S) unless daemon is in foreground (-F) or interactive (-i)\n"));
964 /* we want to re-seed early to prevent time delays causing
965 client problems at a later date. (tridge) */
966 generate_random_buffer(NULL
, 0);
968 /* get initial effective uid and gid */
971 /* make absolutely sure we run as root - to handle cases where people
972 are crazy enough to have it setuid */
973 gain_root_privilege();
974 gain_root_group_privilege();
976 fault_setup((void (*)(void *))exit_server_fault
);
977 dump_core_setup("smbd");
979 /* we are never interested in SIGPIPE */
980 BlockSignals(True
,SIGPIPE
);
983 /* we are never interested in SIGFPE */
984 BlockSignals(True
,SIGFPE
);
988 /* We are no longer interested in USR2 */
989 BlockSignals(True
,SIGUSR2
);
992 /* POSIX demands that signals are inherited. If the invoking process has
993 * these signals masked, we will have problems, as we won't recieve them. */
994 BlockSignals(False
, SIGHUP
);
995 BlockSignals(False
, SIGUSR1
);
996 BlockSignals(False
, SIGTERM
);
998 /* Ensure we leave no zombies until we
999 * correctly set up child handling below. */
1003 /* we want total control over the permissions on created files,
1004 so set our umask to 0 */
1009 DEBUG(0,("smbd version %s started.\n", samba_version_string()));
1010 DEBUGADD(0,("%s\n", COPYRIGHT_STARTUP_MESSAGE
));
1012 DEBUG(2,("uid=%d gid=%d euid=%d egid=%d\n",
1013 (int)getuid(),(int)getgid(),(int)geteuid(),(int)getegid()));
1015 /* Output the build options to the debug log */
1016 build_options(False
);
1018 if (sizeof(uint16
) < 2 || sizeof(uint32
) < 4) {
1019 DEBUG(0,("ERROR: Samba is not configured correctly for the word size on your machine\n"));
1023 if (!lp_load_initial_only(get_dyn_CONFIGFILE())) {
1024 DEBUG(0, ("error opening config file\n"));
1028 /* Init the security context and global current_user */
1031 if (smbd_messaging_context() == NULL
)
1035 * Reloading of the printers will not work here as we don't have a
1036 * server info and rpc services set up. It will be called later.
1038 if (!reload_services(smbd_messaging_context(), -1, False
)) {
1042 /* ...NOTE... Log files are working from this point! */
1044 DEBUG(3,("loaded services\n"));
1049 if (!profile_setup(smbd_messaging_context(), False
)) {
1050 DEBUG(0,("ERROR: failed to setup profiling\n"));
1053 if (profile_level
!= NULL
) {
1054 int pl
= atoi(profile_level
);
1055 struct server_id src
;
1057 DEBUG(1, ("setting profiling level: %s\n",profile_level
));
1059 set_profile_level(pl
, src
);
1063 if (!is_daemon
&& !is_a_socket(0)) {
1065 DEBUG(0,("standard input is not a socket, assuming -D option\n"));
1068 * Setting is_daemon here prevents us from eventually calling
1069 * the open_sockets_inetd()
1075 if (is_daemon
&& !interactive
) {
1076 DEBUG( 3, ( "Becoming a daemon.\n" ) );
1077 become_daemon(Fork
, no_process_group
, log_stdout
);
1080 generate_random_buffer((uint8_t *)&unique_id
, sizeof(unique_id
));
1081 set_my_unique_id(unique_id
);
1085 * If we're interactive we want to set our own process group for
1086 * signal management.
1088 if (interactive
&& !no_process_group
)
1089 setpgid( (pid_t
)0, (pid_t
)0);
1092 if (!directory_exist(lp_lockdir()))
1093 mkdir(lp_lockdir(), 0755);
1096 pidfile_create("smbd");
1098 status
= reinit_after_fork(smbd_messaging_context(),
1099 smbd_event_context(),
1100 procid_self(), false);
1101 if (!NT_STATUS_IS_OK(status
)) {
1102 DEBUG(0,("reinit_after_fork() failed\n"));
1106 smbd_server_conn
->msg_ctx
= smbd_messaging_context();
1108 smbd_setup_sig_term_handler();
1109 smbd_setup_sig_hup_handler(smbd_event_context(),
1110 smbd_server_conn
->msg_ctx
);
1112 /* Setup all the TDB's - including CLEAR_IF_FIRST tdb's. */
1114 if (smbd_memcache() == NULL
) {
1118 memcache_set_global(smbd_memcache());
1120 /* Initialise the password backed before the global_sam_sid
1121 to ensure that we fetch from ldap before we make a domain sid up */
1123 if(!initialize_password_db(False
, smbd_event_context()))
1126 if (!secrets_init()) {
1127 DEBUG(0, ("ERROR: smbd can not open secrets.tdb\n"));
1131 if (lp_server_role() == ROLE_DOMAIN_BDC
|| lp_server_role() == ROLE_DOMAIN_PDC
) {
1132 if (!open_schannel_session_store(NULL
, lp_private_dir())) {
1133 DEBUG(0,("ERROR: Samba cannot open schannel store for secured NETLOGON operations.\n"));
1138 if(!get_global_sam_sid()) {
1139 DEBUG(0,("ERROR: Samba cannot create a SAM SID.\n"));
1143 if (!sessionid_init()) {
1147 if (!connections_init(True
))
1150 if (!locking_init())
1153 if (!messaging_tdb_parent_init(smbd_event_context())) {
1157 if (!notify_internal_parent_init(smbd_event_context())) {
1161 if (!serverid_parent_init(smbd_event_context())) {
1165 if (!printer_list_parent_init()) {
1169 if (!W_ERROR_IS_OK(registry_init_full()))
1172 if (!print_backend_init(smbd_messaging_context()))
1175 /* Open the share_info.tdb here, so we don't have to open
1176 after the fork on every single connection. This is a small
1177 performance improvment and reduces the total number of system
1179 if (!share_info_db_init()) {
1180 DEBUG(0,("ERROR: failed to load share info db.\n"));
1184 if (!init_system_info()) {
1185 DEBUG(0,("ERROR: failed to setup system user info.\n"));
1189 if (!init_guest_info()) {
1190 DEBUG(0,("ERROR: failed to setup guest info.\n"));
1194 if (!file_init(smbd_server_conn
)) {
1195 DEBUG(0, ("ERROR: file_init failed\n"));
1199 if (!srv_rpc_register(smbd_server_conn
->msg_ctx
)) {
1203 /* Publish nt printers, this requires a working winreg pipe */
1204 pcap_cache_reload(server_event_context(), smbd_messaging_context(),
1207 /* only start the background queue daemon if we are
1208 running as a daemon -- bad things will happen if
1209 smbd is launched via inetd and we fork a copy of
1212 if (is_daemon
&& !interactive
1213 && lp_parm_bool(-1, "smbd", "backgroundqueue", true)) {
1214 start_background_queue(smbd_event_context(),
1215 smbd_messaging_context());
1222 /* Started from inetd. fd 0 is the socket. */
1223 /* We will abort gracefully when the client or remote system
1225 smbd_set_server_fd(dup(0));
1227 /* close our standard file descriptors */
1228 close_low_fds(False
); /* Don't close stderr */
1235 smbd_setup_sig_chld_handler();
1237 smbd_process(smbd_server_conn
);
1239 exit_server_cleanly(NULL
);
1243 parent
= talloc_zero(smbd_event_context(), struct smbd_parent_context
);
1245 exit_server("talloc(struct smbd_parent_context) failed");
1247 parent
->interactive
= interactive
;
1249 if (!open_sockets_smbd(parent
, smbd_messaging_context(), ports
))
1250 exit_server("open_sockets_smbd() failed");
1253 /* make sure we always have a valid stackframe */
1254 frame
= talloc_stackframe();
1256 smbd_parent_loop(parent
);
1258 exit_server_cleanly(NULL
);