source: branches/samba-3.0/source/smbd/server.c@ 1071

Last change on this file since 1071 was 312, checked in by Herwig Bauernfeind, 16 years ago

Update 3.0 to final 3.0.36 (source)
File size: 29.2 KB
Line 
1/*
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
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
12
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
17
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21*/
22
23#include "includes.h"
24
25static_decl_rpc;
26
27static int am_parent = 1;
28
29/* the last message the was processed */
30int last_message = -1;
31
32/* a useful macro to debug the last message processed */
33#define LAST_MESSAGE() (last_message != -1 ? smb_fn_name(last_message) : "")
34
35extern struct auth_context *negprot_global_auth_context;
36extern pstring user_socket_options;
37extern SIG_ATOMIC_T got_sig_term;
38extern SIG_ATOMIC_T reload_after_sighup;
39static SIG_ATOMIC_T got_sig_cld;
40
41#ifdef WITH_DFS
42extern int dcelogin_atmost_once;
43#endif /* WITH_DFS */
44
45/* really we should have a top level context structure that has the
46 client file descriptor as an element. That would require a major rewrite :(
47
48 the following 2 functions are an alternative - they make the file
49 descriptor private to smbd
50 */
51static int server_fd = -1;
52
53int smbd_server_fd(void)
54{
55 return server_fd;
56}
57
58static void smbd_set_server_fd(int fd)
59{
60 server_fd = fd;
61 client_setfd(fd);
62}
63
64struct event_context *smbd_event_context(void)
65{
66 static struct event_context *ctx;
67
68 if (!ctx && !(ctx = event_context_init(NULL))) {
69 smb_panic("Could not init smbd event context\n");
70 }
71 return ctx;
72}
73
74struct messaging_context *smbd_messaging_context(void)
75{
76 static struct messaging_context *ctx;
77
78 if (!ctx && !(ctx = messaging_init(NULL, server_id_self(),
79 smbd_event_context()))) {
80 smb_panic("Could not init smbd messaging context\n");
81 }
82 return ctx;
83}
84
85/*******************************************************************
86 What to do when smb.conf is updated.
87 ********************************************************************/
88
89static void smb_conf_updated(int msg_type, struct process_id src,
90 void *buf, size_t len, void *private_data)
91{
92 DEBUG(10,("smb_conf_updated: Got message saying smb.conf was updated. Reloading.\n"));
93 reload_services(False);
94}
95
96
97/*******************************************************************
98 Delete a statcache entry.
99 ********************************************************************/
100
101static void smb_stat_cache_delete(int msg_type, struct process_id src,
102 void *buf, size_t len, void *private_data)
103{
104 const char *name = (const char *)buf;
105 DEBUG(10,("smb_stat_cache_delete: delete name %s\n", name));
106 stat_cache_delete(name);
107}
108
109/****************************************************************************
110 Terminate signal.
111****************************************************************************/
112
113static void sig_term(void)
114{
115 got_sig_term = 1;
116 sys_select_signal(SIGTERM);
117}
118
119/****************************************************************************
120 Catch a sighup.
121****************************************************************************/
122
123static void sig_hup(int sig)
124{
125 reload_after_sighup = 1;
126 sys_select_signal(SIGHUP);
127}
128
129/****************************************************************************
130 Catch a sigcld
131****************************************************************************/
132static void sig_cld(int sig)
133{
134 got_sig_cld = 1;
135 sys_select_signal(SIGCLD);
136}
137
138/****************************************************************************
139 Send a SIGTERM to our process group.
140*****************************************************************************/
141
142static void killkids(void)
143{
144 if(am_parent) kill(0,SIGTERM);
145}
146
147/****************************************************************************
148 Process a sam sync message - not sure whether to do this here or
149 somewhere else.
150****************************************************************************/
151
152static void msg_sam_sync(int UNUSED(msg_type), struct process_id UNUSED(pid),
153 void *UNUSED(buf), size_t UNUSED(len),
154 void *private_data)
155{
156 DEBUG(10, ("** sam sync message received, ignoring\n"));
157}
158
159/****************************************************************************
160 Process a sam sync replicate message - not sure whether to do this here or
161 somewhere else.
162****************************************************************************/
163
164static void msg_sam_repl(int msg_type, struct process_id pid,
165 void *buf, size_t len, void *private_data)
166{
167 uint32 low_serial;
168
169 if (len != sizeof(uint32))
170 return;
171
172 low_serial = *((uint32 *)buf);
173
174 DEBUG(3, ("received sam replication message, serial = 0x%04x\n",
175 low_serial));
176}
177
178/****************************************************************************
179 Open the socket communication - inetd.
180****************************************************************************/
181
182static BOOL open_sockets_inetd(void)
183{
184 /* Started from inetd. fd 0 is the socket. */
185 /* We will abort gracefully when the client or remote system
186 goes away */
187 smbd_set_server_fd(dup(0));
188
189 /* close our standard file descriptors */
190 close_low_fds(False); /* Don't close stderr */
191
192 set_socket_options(smbd_server_fd(),"SO_KEEPALIVE");
193 set_socket_options(smbd_server_fd(), user_socket_options);
194
195 return True;
196}
197
198static void msg_exit_server(int msg_type, struct process_id src,
199 void *buf, size_t len, void *private_data)
200{
201 DEBUG(3, ("got a SHUTDOWN message\n"));
202 exit_server_cleanly(NULL);
203}
204
205#ifdef DEVELOPER
206static void msg_inject_fault(int msg_type, struct process_id src,
207 void *buf, size_t len, void *private_data)
208{
209 int sig;
210
211 if (len != sizeof(int)) {
212
213 DEBUG(0, ("Process %llu sent bogus signal injection request\n",
214 (unsigned long long)src.pid));
215 return;
216 }
217
218 sig = *(int *)buf;
219 if (sig == -1) {
220 exit_server("internal error injected");
221 return;
222 }
223
224#if HAVE_STRSIGNAL
225 DEBUG(0, ("Process %llu requested injection of signal %d (%s)\n",
226 (unsigned long long)src.pid, sig, strsignal(sig)));
227#else
228 DEBUG(0, ("Process %llu requested injection of signal %d\n",
229 (unsigned long long)src.pid, sig));
230#endif
231
232 kill(sys_getpid(), sig);
233}
234#endif /* DEVELOPER */
235
236struct child_pid {
237 struct child_pid *prev, *next;
238 pid_t pid;
239};
240
241static struct child_pid *children;
242static int num_children;
243
244static void add_child_pid(pid_t pid)
245{
246 struct child_pid *child;
247
248 if (lp_max_smbd_processes() == 0) {
249 /* Don't bother with the child list if we don't care anyway */
250 return;
251 }
252
253 child = SMB_MALLOC_P(struct child_pid);
254 if (child == NULL) {
255 DEBUG(0, ("Could not add child struct -- malloc failed\n"));
256 return;
257 }
258 child->pid = pid;
259 DLIST_ADD(children, child);
260 num_children += 1;
261}
262
263static void remove_child_pid(pid_t pid)
264{
265 struct child_pid *child;
266
267 if (lp_max_smbd_processes() == 0) {
268 /* Don't bother with the child list if we don't care anyway */
269 return;
270 }
271
272 for (child = children; child != NULL; child = child->next) {
273 if (child->pid == pid) {
274 struct child_pid *tmp = child;
275 DLIST_REMOVE(children, child);
276 SAFE_FREE(tmp);
277 num_children -= 1;
278 return;
279 }
280 }
281
282 DEBUG(0, ("Could not find child %d -- ignoring\n", (int)pid));
283}
284
285/****************************************************************************
286 Have we reached the process limit ?
287****************************************************************************/
288
289static BOOL allowable_number_of_smbd_processes(void)
290{
291 int max_processes = lp_max_smbd_processes();
292
293 if (!max_processes)
294 return True;
295
296 return num_children < max_processes;
297}
298
299/****************************************************************************
300 Open the socket communication.
301****************************************************************************/
302
303bool reinit_after_fork(struct messaging_context *msg_ctx,
304 struct event_context *ev_ctx,
305 bool parent_longlived);
306
307static BOOL open_sockets_smbd(BOOL is_daemon, BOOL interactive, const char *smb_ports)
308{
309 int num_interfaces = iface_count();
310 int num_sockets = 0;
311 int fd_listenset[FD_SETSIZE];
312 fd_set listen_set;
313 int s;
314 int maxfd = 0;
315 int i;
316 char *ports;
317
318 if (!is_daemon) {
319 return open_sockets_inetd();
320 }
321
322
323#ifdef HAVE_ATEXIT
324 {
325 static int atexit_set;
326 if(atexit_set == 0) {
327 atexit_set=1;
328 atexit(killkids);
329 }
330 }
331#endif
332
333 /* Stop zombies */
334 CatchSignal(SIGCLD, sig_cld);
335
336 FD_ZERO(&listen_set);
337
338 /* use a reasonable default set of ports - listing on 445 and 139 */
339 if (!smb_ports) {
340 ports = lp_smb_ports();
341 if (!ports || !*ports) {
342 ports = smb_xstrdup(SMB_PORTS);
343 } else {
344 ports = smb_xstrdup(ports);
345 }
346 } else {
347 ports = smb_xstrdup(smb_ports);
348 }
349
350 if (lp_interfaces() && lp_bind_interfaces_only()) {
351 /* We have been given an interfaces line, and been
352 told to only bind to those interfaces. Create a
353 socket per interface and bind to only these.
354 */
355
356 /* Now open a listen socket for each of the
357 interfaces. */
358 for(i = 0; i < num_interfaces; i++) {
359 struct in_addr *ifip = iface_n_ip(i);
360 fstring tok;
361 const char *ptr;
362
363 if(ifip == NULL) {
364 DEBUG(0,("open_sockets_smbd: interface %d has NULL IP address !\n", i));
365 continue;
366 }
367
368 for (ptr=ports; next_token(&ptr, tok, " \t,", sizeof(tok)); ) {
369 unsigned port = atoi(tok);
370 if (port == 0 || port > 0xffff) {
371 continue;
372 }
373 s = fd_listenset[num_sockets] = open_socket_in(SOCK_STREAM, port, 0, ifip->s_addr, True);
374 if(s == -1)
375 return False;
376
377 /* ready to listen */
378 set_socket_options(s,"SO_KEEPALIVE");
379 set_socket_options(s,user_socket_options);
380
381 /* Set server socket to non-blocking for the accept. */
382 set_blocking(s,False);
383
384 if (listen(s, SMBD_LISTEN_BACKLOG) == -1) {
385 DEBUG(0,("listen: %s\n",strerror(errno)));
386 close(s);
387 return False;
388 }
389 FD_SET(s,&listen_set);
390 maxfd = MAX( maxfd, s);
391
392 num_sockets++;
393 if (num_sockets >= FD_SETSIZE) {
394 DEBUG(0,("open_sockets_smbd: Too many sockets to bind to\n"));
395 return False;
396 }
397 }
398 }
399 } else {
400 /* Just bind to 0.0.0.0 - accept connections
401 from anywhere. */
402
403 fstring tok;
404 const char *ptr;
405
406 num_interfaces = 1;
407
408 for (ptr=ports; next_token(&ptr, tok, " \t,", sizeof(tok)); ) {
409 unsigned port = atoi(tok);
410 if (port == 0 || port > 0xffff) continue;
411 /* open an incoming socket */
412 s = open_socket_in(SOCK_STREAM, port, 0,
413 interpret_addr(lp_socket_address()),True);
414 if (s == -1)
415 return(False);
416
417 /* ready to listen */
418 set_socket_options(s,"SO_KEEPALIVE");
419 set_socket_options(s,user_socket_options);
420
421 /* Set server socket to non-blocking for the accept. */
422 set_blocking(s,False);
423
424 if (listen(s, SMBD_LISTEN_BACKLOG) == -1) {
425 DEBUG(0,("open_sockets_smbd: listen: %s\n",
426 strerror(errno)));
427 close(s);
428 return False;
429 }
430
431 fd_listenset[num_sockets] = s;
432 FD_SET(s,&listen_set);
433 maxfd = MAX( maxfd, s);
434
435 num_sockets++;
436
437 if (num_sockets >= FD_SETSIZE) {
438 DEBUG(0,("open_sockets_smbd: Too many sockets to bind to\n"));
439 return False;
440 }
441 }
442 }
443
444 SAFE_FREE(ports);
445
446 /* Listen to messages */
447
448 message_register(MSG_SMB_SAM_SYNC, msg_sam_sync, NULL);
449 message_register(MSG_SMB_SAM_REPL, msg_sam_repl, NULL);
450 message_register(MSG_SHUTDOWN, msg_exit_server, NULL);
451 message_register(MSG_SMB_FILE_RENAME, msg_file_was_renamed, NULL);
452 message_register(MSG_SMB_CONF_UPDATED, smb_conf_updated, NULL);
453 message_register(MSG_SMB_STAT_CACHE_DELETE, smb_stat_cache_delete,
454 NULL);
455
456#ifdef DEVELOPER
457 message_register(MSG_SMB_INJECT_FAULT, msg_inject_fault, NULL);
458#endif
459
460 /* now accept incoming connections - forking a new process
461 for each incoming connection */
462 DEBUG(2,("waiting for a connection\n"));
463 while (1) {
464 fd_set lfds;
465 int num;
466
467 /* Free up temporary memory from the main smbd. */
468 lp_TALLOC_FREE();
469
470 /* Ensure we respond to PING and DEBUG messages from the main smbd. */
471 message_dispatch();
472
473 if (got_sig_cld) {
474 pid_t pid;
475 got_sig_cld = False;
476
477 while ((pid = sys_waitpid(-1, NULL, WNOHANG)) > 0) {
478 remove_child_pid(pid);
479 }
480 }
481
482 memcpy((char *)&lfds, (char *)&listen_set,
483 sizeof(listen_set));
484
485 num = sys_select(maxfd+1,&lfds,NULL,NULL,NULL);
486
487 if (num == -1 && errno == EINTR) {
488 if (got_sig_term) {
489 exit_server_cleanly(NULL);
490 }
491
492 /* check for sighup processing */
493 if (reload_after_sighup) {
494 change_to_root_user();
495 DEBUG(1,("Reloading services after SIGHUP\n"));
496 reload_services(False);
497 reload_after_sighup = 0;
498 }
499
500 continue;
501 }
502
503 /* check if we need to reload services */
504 check_reload(time(NULL));
505
506 /* Find the sockets that are read-ready -
507 accept on these. */
508 for( ; num > 0; num--) {
509 struct sockaddr addr;
510 socklen_t in_addrlen = sizeof(addr);
511 pid_t child = 0;
512
513 s = -1;
514 for(i = 0; i < num_sockets; i++) {
515 if(FD_ISSET(fd_listenset[i],&lfds)) {
516 s = fd_listenset[i];
517 /* Clear this so we don't look
518 at it again. */
519 FD_CLR(fd_listenset[i],&lfds);
520 break;
521 }
522 }
523
524 smbd_set_server_fd(accept(s,&addr,&in_addrlen));
525
526 if (smbd_server_fd() == -1 && errno == EINTR)
527 continue;
528
529 if (smbd_server_fd() == -1) {
530 DEBUG(0,("open_sockets_smbd: accept: %s\n",
531 strerror(errno)));
532 continue;
533 }
534
535 /* Ensure child is set to blocking mode */
536 set_blocking(smbd_server_fd(),True);
537
538 if (smbd_server_fd() != -1 && interactive)
539 return True;
540
541 if (allowable_number_of_smbd_processes() &&
542 smbd_server_fd() != -1 &&
543 ((child = sys_fork())==0)) {
544 /* Child code ... */
545
546 /* Stop zombies, the parent explicitly handles
547 * them, counting worker smbds. */
548 CatchChild();
549
550 /* close the listening socket(s) */
551 for(i = 0; i < num_sockets; i++)
552 close(fd_listenset[i]);
553
554 /* close our standard file
555 descriptors */
556 close_low_fds(False);
557 am_parent = 0;
558
559 set_socket_options(smbd_server_fd(),"SO_KEEPALIVE");
560 set_socket_options(smbd_server_fd(),user_socket_options);
561
562 /* this is needed so that we get decent entries
563 in smbstatus for port 445 connects */
564 set_remote_machine_name(get_peer_addr(smbd_server_fd()),
565 False);
566
567 if (!reinit_after_fork(smbd_messaging_context(),
568 smbd_event_context(),
569 true)) {
570 DEBUG(0, ("reinit_after_fork failed.\n"));
571 smb_panic("reinit_after_fork failed.\n");
572 }
573
574 return True;
575 }
576 /* The parent doesn't need this socket */
577 close(smbd_server_fd());
578
579 /* Sun May 6 18:56:14 2001 ackley@cs.unm.edu:
580 Clear the closed fd info out of server_fd --
581 and more importantly, out of client_fd in
582 util_sock.c, to avoid a possible
583 getpeername failure if we reopen the logs
584 and use %I in the filename.
585 */
586
587 smbd_set_server_fd(-1);
588
589 if (child != 0) {
590 add_child_pid(child);
591 }
592
593 /* Force parent to check log size after
594 * spawning child. Fix from
595 * klausr@ITAP.Physik.Uni-Stuttgart.De. The
596 * parent smbd will log to logserver.smb. It
597 * writes only two messages for each child
598 * started/finished. But each child writes,
599 * say, 50 messages also in logserver.smb,
600 * begining with the debug_count of the
601 * parent, before the child opens its own log
602 * file logserver.client. In a worst case
603 * scenario the size of logserver.smb would be
604 * checked after about 50*50=2500 messages
605 * (ca. 100kb).
606 * */
607 force_check_log_size();
608
609 } /* end for num */
610 } /* end while 1 */
611
612/* NOTREACHED return True; */
613}
614
615/****************************************************************************
616 Reload printers
617**************************************************************************/
618void reload_printers(void)
619{
620 int snum;
621 int n_services = lp_numservices();
622 int pnum = lp_servicenumber(PRINTERS_NAME);
623 const char *pname;
624
625 pcap_cache_reload();
626
627 /* remove stale printers */
628 for (snum = 0; snum < n_services; snum++) {
629 /* avoid removing PRINTERS_NAME or non-autoloaded printers */
630 if (snum == pnum || !(lp_snum_ok(snum) && lp_print_ok(snum) &&
631 lp_autoloaded(snum)))
632 continue;
633
634 pname = lp_printername(snum);
635 if (!pcap_printername_ok(pname)) {
636 DEBUG(3, ("removing stale printer %s\n", pname));
637
638 if (is_printer_published(NULL, snum, NULL))
639 nt_printer_publish(NULL, snum, SPOOL_DS_UNPUBLISH);
640 del_a_printer(pname);
641 lp_killservice(snum);
642 }
643 }
644
645 load_printers();
646}
647
648/****************************************************************************
649 Reload the services file.
650**************************************************************************/
651
652BOOL reload_services(BOOL test)
653{
654 BOOL ret;
655
656 if (lp_loaded()) {
657 pstring fname;
658 pstrcpy(fname,lp_configfile());
659 if (file_exist(fname, NULL) &&
660 !strcsequal(fname, dyn_CONFIGFILE)) {
661 pstrcpy(dyn_CONFIGFILE, fname);
662 test = False;
663 }
664 }
665
666 reopen_logs();
667
668 if (test && !lp_file_list_changed())
669 return(True);
670
671 lp_killunused(conn_snum_used);
672
673 ret = lp_load(dyn_CONFIGFILE, False, False, True, True);
674
675 reload_printers();
676
677 /* perhaps the config filename is now set */
678 if (!test)
679 reload_services(True);
680
681 reopen_logs();
682
683 load_interfaces();
684
685 if (smbd_server_fd() != -1) {
686 set_socket_options(smbd_server_fd(),"SO_KEEPALIVE");
687 set_socket_options(smbd_server_fd(), user_socket_options);
688 }
689
690 mangle_reset_cache();
691 reset_stat_cache();
692
693 /* this forces service parameters to be flushed */
694 set_current_service(NULL,0,True);
695
696 return(ret);
697}
698
699/****************************************************************************
700 Exit the server.
701****************************************************************************/
702
703/* Reasons for shutting down a server process. */
704enum server_exit_reason { SERVER_EXIT_NORMAL, SERVER_EXIT_ABNORMAL };
705
706static void exit_server_common(enum server_exit_reason how,
707 const char *const reason) NORETURN_ATTRIBUTE;
708
709static void exit_server_common(enum server_exit_reason how,
710 const char *const reason)
711{
712 static int firsttime=1;
713
714 if (!firsttime)
715 exit(0);
716 firsttime = 0;
717
718 change_to_root_user();
719
720 if (negprot_global_auth_context) {
721 (negprot_global_auth_context->free)(&negprot_global_auth_context);
722 }
723
724 conn_close_all();
725
726 invalidate_all_vuids();
727
728 print_notify_send_messages(3); /* 3 second timeout. */
729
730 /* delete our entry in the connections database. */
731 yield_connection(NULL,"");
732
733 respond_to_all_remaining_local_messages();
734
735#ifdef WITH_DFS
736 if (dcelogin_atmost_once) {
737 dfs_unlogin();
738 }
739#endif
740
741 locking_end();
742 printing_end();
743
744#ifdef __OS2__
745 /* On OS/2 - we need to remove the PID file on server exit otherwise we may not be able to restart Samba */
746 pstring pidFile;
747 slprintf(pidFile, sizeof(pidFile)-1, "%s/%s.pid", lp_piddir(), "smbd");
748 unlink(pidFile);
749#endif
750
751 if (how != SERVER_EXIT_NORMAL) {
752 int oldlevel = DEBUGLEVEL;
753 char *last_inbuf = get_InBuffer();
754
755 DEBUGLEVEL = 10;
756
757 DEBUGSEP(0);
758 DEBUG(0,("Abnormal server exit: %s\n",
759 reason ? reason : "no explanation provided"));
760 DEBUGSEP(0);
761
762 log_stack_trace();
763 if (last_inbuf) {
764 DEBUG(0,("Last message was %s\n", LAST_MESSAGE()));
765 show_msg(last_inbuf);
766 }
767
768 DEBUGLEVEL = oldlevel;
769 dump_core();
770
771 } else {
772 DEBUG(3,("Server exit (%s)\n",
773 (reason ? reason : "normal exit")));
774 }
775
776 exit(0);
777}
778
779void exit_server(const char *const explanation)
780{
781 exit_server_common(SERVER_EXIT_ABNORMAL, explanation);
782}
783
784void exit_server_cleanly(const char *const explanation)
785{
786 exit_server_common(SERVER_EXIT_NORMAL, explanation);
787}
788
789void exit_server_fault(void)
790{
791 exit_server("critical server fault");
792}
793
794/****************************************************************************
795 Initialise connect, service and file structs.
796****************************************************************************/
797
798static BOOL init_structs(void )
799{
800 /*
801 * Set the machine NETBIOS name if not already
802 * set from the config file.
803 */
804
805 if (!init_names())
806 return False;
807
808 conn_init();
809
810 file_init();
811
812 /* for RPC pipes */
813 init_rpc_pipe_hnd();
814
815 init_dptrs();
816
817 secrets_init();
818
819 return True;
820}
821
822/****************************************************************************
823 main program.
824****************************************************************************/
825
826/* Declare prototype for build_options() to avoid having to run it through
827 mkproto.h. Mixing $(builddir) and $(srcdir) source files in the current
828 prototype generation system is too complicated. */
829
830extern void build_options(BOOL screen);
831
832 int main(int argc,const char *argv[])
833{
834 /* shall I run as a daemon */
835 static BOOL is_daemon = False;
836 static BOOL interactive = False;
837 static BOOL Fork = True;
838 static BOOL no_process_group = False;
839 static BOOL log_stdout = False;
840 static char *ports = NULL;
841 static char *profile_level = NULL;
842 int opt;
843 poptContext pc;
844
845 struct poptOption long_options[] = {
846 POPT_AUTOHELP
847 {"daemon", 'D', POPT_ARG_VAL, &is_daemon, True, "Become a daemon (default)" },
848 {"interactive", 'i', POPT_ARG_VAL, &interactive, True, "Run interactive (not a daemon)"},
849 {"foreground", 'F', POPT_ARG_VAL, &Fork, False, "Run daemon in foreground (for daemontools, etc.)" },
850 {"no-process-group", '\0', POPT_ARG_VAL, &no_process_group, True, "Don't create a new process group" },
851 {"log-stdout", 'S', POPT_ARG_VAL, &log_stdout, True, "Log to stdout" },
852 {"build-options", 'b', POPT_ARG_NONE, NULL, 'b', "Print build options" },
853 {"port", 'p', POPT_ARG_STRING, &ports, 0, "Listen on the specified ports"},
854 {"profiling-level", 'P', POPT_ARG_STRING, &profile_level, 0, "Set profiling level","PROFILE_LEVEL"},
855 POPT_COMMON_SAMBA
856 POPT_COMMON_DYNCONFIG
857 POPT_TABLEEND
858 };
859
860 load_case_tables();
861
862 TimeInit();
863
864#ifdef HAVE_SET_AUTH_PARAMETERS
865 set_auth_parameters(argc,argv);
866#endif
867
868 pc = poptGetContext("smbd", argc, argv, long_options, 0);
869
870 while((opt = poptGetNextOpt(pc)) != -1) {
871 switch (opt) {
872 case 'b':
873 build_options(True); /* Display output to screen as well as debug */
874 exit(0);
875 break;
876 }
877 }
878
879 poptFreeContext(pc);
880
881#ifdef HAVE_SETLUID
882 /* needed for SecureWare on SCO */
883 setluid(0);
884#endif
885
886 sec_init();
887
888 set_remote_machine_name("smbd", False);
889
890 if (interactive) {
891 Fork = False;
892 log_stdout = True;
893 }
894
895 if (interactive && (DEBUGLEVEL >= 9)) {
896 talloc_enable_leak_report();
897 }
898
899 if (log_stdout && Fork) {
900 DEBUG(0,("ERROR: Can't log to stdout (-S) unless daemon is in foreground (-F) or interactive (-i)\n"));
901 exit(1);
902 }
903
904 setup_logging(argv[0],log_stdout);
905
906 /* we want to re-seed early to prevent time delays causing
907 client problems at a later date. (tridge) */
908 generate_random_buffer(NULL, 0);
909
910 /* make absolutely sure we run as root - to handle cases where people
911 are crazy enough to have it setuid */
912
913 gain_root_privilege();
914 gain_root_group_privilege();
915
916 fault_setup((void (*)(void *))exit_server_fault);
917 dump_core_setup("smbd");
918
919 CatchSignal(SIGTERM , SIGNAL_CAST sig_term);
920 CatchSignal(SIGHUP,SIGNAL_CAST sig_hup);
921
922 /* we are never interested in SIGPIPE */
923 BlockSignals(True,SIGPIPE);
924
925#if defined(SIGFPE)
926 /* we are never interested in SIGFPE */
927 BlockSignals(True,SIGFPE);
928#endif
929
930#if defined(SIGUSR2)
931 /* We are no longer interested in USR2 */
932 BlockSignals(True,SIGUSR2);
933#endif
934
935 /* POSIX demands that signals are inherited. If the invoking process has
936 * these signals masked, we will have problems, as we won't recieve them. */
937 BlockSignals(False, SIGHUP);
938 BlockSignals(False, SIGUSR1);
939 BlockSignals(False, SIGTERM);
940
941 /* we want total control over the permissions on created files,
942 so set our umask to 0 */
943 umask(0);
944
945 init_sec_ctx();
946
947 reopen_logs();
948
949#ifdef __OS2__
950 unsigned long _System DosSetPriority (unsigned long ulScope, unsigned long ulClass, long lDelta, unsigned long ulID);
951 int rc;
952 rc = DosSetPriority(
953 0, /* Scope: only one process */
954 4, /* set to PRTYC_FOREGROUNDSERVER */
955 0, /* set delta - was 0 */
956 0); /* Assume current process */
957 DEBUG(0,( "Server priority set to PRTYC_FOREGROUNDSERVER\n"));
958#endif
959
960 DEBUG(0,( "smbd version %s started.\n", SAMBA_VERSION_STRING));
961 DEBUGADD( 0, ( "%s\n", COPYRIGHT_STARTUP_MESSAGE ) );
962
963 DEBUG(2,("uid=%d gid=%d euid=%d egid=%d\n",
964 (int)getuid(),(int)getgid(),(int)geteuid(),(int)getegid()));
965
966 /* Output the build options to the debug log */
967 build_options(False);
968
969 if (sizeof(uint16) < 2 || sizeof(uint32) < 4) {
970 DEBUG(0,("ERROR: Samba is not configured correctly for the word size on your machine\n"));
971 exit(1);
972 }
973
974 /*
975 * Do this before reload_services.
976 */
977
978 if (!reload_services(False))
979 return(-1);
980
981 init_structs();
982
983#ifdef WITH_PROFILE
984 if (!profile_setup(False)) {
985 DEBUG(0,("ERROR: failed to setup profiling\n"));
986 return -1;
987 }
988 if (profile_level != NULL) {
989 int pl = atoi(profile_level);
990 struct process_id src;
991
992 DEBUG(1, ("setting profiling level: %s\n",profile_level));
993 src.pid = getpid();
994 set_profile_level(pl, src);
995 }
996#endif
997
998 DEBUG(3,( "loaded services\n"));
999
1000 if (!is_daemon && !is_a_socket(0)) {
1001 if (!interactive)
1002 DEBUG(0,("standard input is not a socket, assuming -D option\n"));
1003
1004 /*
1005 * Setting is_daemon here prevents us from eventually calling
1006 * the open_sockets_inetd()
1007 */
1008
1009 is_daemon = True;
1010 }
1011
1012 if (is_daemon && !interactive) {
1013 DEBUG( 3, ( "Becoming a daemon.\n" ) );
1014 become_daemon(Fork, no_process_group);
1015 }
1016
1017#if HAVE_SETPGID
1018 /*
1019 * If we're interactive we want to set our own process group for
1020 * signal management.
1021 */
1022 if (interactive && !no_process_group)
1023 setpgid( (pid_t)0, (pid_t)0);
1024#endif
1025
1026 if (!directory_exist(lp_lockdir(), NULL))
1027 mkdir(lp_lockdir(), 0755);
1028
1029 if (is_daemon)
1030 pidfile_create("smbd");
1031
1032 /* Setup all the TDB's - including CLEAR_IF_FIRST tdb's. */
1033 if (!message_init())
1034 exit(1);
1035
1036 /* Initialise the password backed before the global_sam_sid
1037 to ensure that we fetch from ldap before we make a domain sid up */
1038
1039 if(!initialize_password_db(False))
1040 exit(1);
1041
1042 if (!secrets_init()) {
1043 DEBUG(0, ("ERROR: smbd can not open secrets.tdb\n"));
1044 exit(1);
1045 }
1046
1047 if(!get_global_sam_sid()) {
1048 DEBUG(0,("ERROR: Samba cannot create a SAM SID.\n"));
1049 exit(1);
1050 }
1051
1052 if (!session_init())
1053 exit(1);
1054
1055 if (conn_tdb_ctx() == NULL)
1056 exit(1);
1057
1058 if (!locking_init(0))
1059 exit(1);
1060
1061 namecache_enable();
1062
1063 if (!init_registry())
1064 exit(1);
1065
1066#if 0
1067 if (!init_svcctl_db())
1068 exit(1);
1069#endif
1070
1071 if (!print_backend_init())
1072 exit(1);
1073
1074 if (!init_guest_info()) {
1075 DEBUG(0,("ERROR: failed to setup guest info.\n"));
1076 return -1;
1077 }
1078
1079 /* Setup the main smbd so that we can get messages. */
1080 /* don't worry about general printing messages here */
1081
1082 claim_connection(NULL,"",0,True,FLAG_MSG_GENERAL|FLAG_MSG_SMBD);
1083
1084 /* only start the background queue daemon if we are
1085 running as a daemon -- bad things will happen if
1086 smbd is launched via inetd and we fork a copy of
1087 ourselves here */
1088
1089 if ( is_daemon && !interactive )
1090 start_background_queue();
1091
1092 /* Always attempt to initialize DMAPI. We will only use it later if
1093 * lp_dmapi_support is set on the share, but we need a single global
1094 * session to work with.
1095 */
1096 dmapi_init_session();
1097
1098 if (!open_sockets_smbd(is_daemon, interactive, ports))
1099 exit(1);
1100
1101 /*
1102 * everything after this point is run after the fork()
1103 */
1104
1105 static_init_rpc;
1106
1107 init_modules();
1108
1109 /* Possibly reload the services file. Only worth doing in
1110 * daemon mode. In inetd mode, we know we only just loaded this.
1111 */
1112 if (is_daemon) {
1113 reload_services(True);
1114 }
1115
1116 if (!init_account_policy()) {
1117 DEBUG(0,("Could not open account policy tdb.\n"));
1118 exit(1);
1119 }
1120
1121 if (*lp_rootdir()) {
1122 if (sys_chroot(lp_rootdir()) != 0) {
1123 DEBUG(0,("Failed to change root to %s\n", lp_rootdir()));
1124 exit(1);
1125 }
1126 if (chdir("/") == -1) {
1127 DEBUG(0,("Failed to chdir to / on chroot to %s\n", lp_rootdir()));
1128 exit(1);
1129 }
1130 DEBUG(0,("Changed root to %s\n", lp_rootdir()));
1131 }
1132
1133 /* Setup oplocks */
1134 if (!init_oplocks())
1135 exit(1);
1136
1137 /* Setup aio signal handler. */
1138 initialize_async_io_handler();
1139
1140 /* register our message handlers */
1141 message_register(MSG_SMB_FORCE_TDIS, msg_force_tdis, NULL);
1142
1143 smbd_process();
1144
1145 namecache_shutdown();
1146
1147 exit_server_cleanly(NULL);
1148 return(0);
1149}
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