source/smbd/server.c

   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
   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
  25 extern fstring global_myworkgroup;
  26 extern pstring global_myname;
  27
  28 int am_parent = 1;
  29
  30 /* the last message the was processed */
  31 int last_message = -1;
  32
  33 /* a useful macro to debug the last message processed */
  34 #define LAST_MESSAGE() smb_fn_name(last_message)
  35
  36 extern pstring user_socket_options;
  37 extern SIG_ATOMIC_T got_sig_term;
  38 extern SIG_ATOMIC_T reload_after_sighup;
  39
  40 #ifdef WITH_DFS
  41 extern int dcelogin_atmost_once;
  42 #endif /* WITH_DFS */
  43
  44 /* really we should have a top level context structure that has the
  45    client file descriptor as an element. That would require a major rewrite :(
  46
  47    the following 2 functions are an alternative - they make the file
  48    descriptor private to smbd
  49  */
  50 static int server_fd = -1;
  51
  52 int smbd_server_fd(void)
  53 {
  54         return server_fd;
  55 }
  56
  57 static void smbd_set_server_fd(int fd)
  58 {
  59         server_fd = fd;
  60         client_setfd(fd);
  61 }
  62
  63 /****************************************************************************
  64  Terminate signal.
  65 ****************************************************************************/
  66
  67 static void sig_term(void)
  68 {
  69         got_sig_term = 1;
  70         sys_select_signal();
  71 }
  72
  73 /****************************************************************************
  74  Catch a sighup.
  75 ****************************************************************************/
  76
  77 static void sig_hup(int sig)
  78 {
  79         reload_after_sighup = 1;
  80         sys_select_signal();
  81 }
  82
  83 /****************************************************************************
  84   Send a SIGTERM to our process group.
  85 *****************************************************************************/
  86
  87 static void  killkids(void)
  88 {
  89         if(am_parent) kill(0,SIGTERM);
  90 }
  91
  92 /****************************************************************************
  93  Process a sam sync message - not sure whether to do this here or
  94  somewhere else.
  95 ****************************************************************************/
  96
  97 static void msg_sam_sync(int UNUSED(msg_type), pid_t UNUSED(pid),
  98                          void *UNUSED(buf), size_t UNUSED(len))
  99 {
 100         DEBUG(10, ("** sam sync message received, ignoring\n"));
 101 }
 102
 103 /****************************************************************************
 104  Process a sam sync replicate message - not sure whether to do this here or
 105  somewhere else.
 106 ****************************************************************************/
 107
 108 static void msg_sam_repl(int msg_type, pid_t pid, void *buf, size_t len)
 109 {
 110         uint32 low_serial;
 111
 112         if (len != sizeof(uint32))
 113                 return;
 114
 115         low_serial = *((uint32 *)buf);
 116
 117         DEBUG(3, ("received sam replication message, serial = 0x%04x\n",
 118                   low_serial));
 119 }
 120
 121 /****************************************************************************
 122  Open the socket communication - inetd.
 123 ****************************************************************************/
 124
 125 static BOOL open_sockets_inetd(void)
 126 {
 127         /* Started from inetd. fd 0 is the socket. */
 128         /* We will abort gracefully when the client or remote system
 129            goes away */
 130         smbd_set_server_fd(dup(0));
 131
 132         /* close our standard file descriptors */
 133         close_low_fds(False); /* Don't close stderr */
 134
 135         set_socket_options(smbd_server_fd(),"SO_KEEPALIVE");
 136         set_socket_options(smbd_server_fd(), user_socket_options);
 137
 138         return True;
 139 }
 140
 141 static void msg_exit_server(int msg_type, pid_t src, void *buf, size_t len)
 142 {
 143         exit_server("Got a SHUTDOWN message");
 144 }
 145
 146
 147 /****************************************************************************
 148  Open the socket communication.
 149 ****************************************************************************/
 150
 151 static BOOL open_sockets_smbd(BOOL is_daemon,const char *smb_ports)
 152 {
 153         int num_interfaces = iface_count();
 154         int num_sockets = 0;
 155         int fd_listenset[FD_SETSIZE];
 156         fd_set listen_set;
 157         int s;
 158         int i;
 159         char *ports;
 160
 161         if (!is_daemon) {
 162                 return open_sockets_inetd();
 163         }
 164
 165
 166 #ifdef HAVE_ATEXIT
 167         {
 168                 static int atexit_set;
 169                 if(atexit_set == 0) {
 170                         atexit_set=1;
 171                         atexit(killkids);
 172                 }
 173         }
 174 #endif
 175
 176         /* Stop zombies */
 177         CatchChild();
 178
 179         FD_ZERO(&listen_set);
 180
 181         /* use a reasonable default set of ports - listing on 445 and 139 */
 182         if (!smb_ports) {
 183                 ports = lp_smb_ports();
 184                 if (!ports || !*ports) {
 185                         ports = SMB_PORTS;
 186                 }
 187                 ports = strdup(ports);
 188         } else {
 189                 ports = strdup(smb_ports);
 190         }
 191
 192         if (lp_interfaces() && lp_bind_interfaces_only()) {
 193                 /* We have been given an interfaces line, and been
 194                    told to only bind to those interfaces. Create a
 195                    socket per interface and bind to only these.
 196                 */
 197
 198                 /* Now open a listen socket for each of the
 199                    interfaces. */
 200                 for(i = 0; i < num_interfaces; i++) {
 201                         struct in_addr *ifip = iface_n_ip(i);
 202                         fstring tok;
 203                         char *ptr;
 204
 205                         if(ifip == NULL) {
 206                                 DEBUG(0,("open_sockets_smbd: interface %d has NULL IP address !\n", i));
 207                                 continue;
 208                         }
 209
 210                         for (ptr=ports; next_token(&ptr, tok, NULL, sizeof(tok)); ) {
 211                                 unsigned port = atoi(tok);
 212                                 if (port == 0) continue;
 213                                 s = fd_listenset[num_sockets] = open_socket_in(SOCK_STREAM, port, 0, ifip->s_addr, True);
 214                                 if(s == -1)
 215                                         return False;
 216
 217                                 /* ready to listen */
 218                                 set_socket_options(s,"SO_KEEPALIVE");
 219                                 set_socket_options(s,user_socket_options);
 220
 221                                 if (listen(s, 5) == -1) {
 222                                         DEBUG(0,("listen: %s\n",strerror(errno)));
 223                                         close(s);
 224                                         return False;
 225                                 }
 226                                 FD_SET(s,&listen_set);
 227
 228                                 num_sockets++;
 229                                 if (num_sockets >= FD_SETSIZE) {
 230                                         DEBUG(0,("open_sockets_smbd: Too many sockets to bind to\n"));
 231                                         return False;
 232                                 }
 233                         }
 234                 }
 235         } else {
 236                 /* Just bind to 0.0.0.0 - accept connections
 237                    from anywhere. */
 238
 239                 fstring tok;
 240                 char *ptr;
 241
 242                 num_interfaces = 1;
 243
 244                 for (ptr=ports; next_token(&ptr, tok, NULL, sizeof(tok)); ) {
 245                         unsigned port = atoi(tok);
 246                         if (port == 0) continue;
 247                         /* open an incoming socket */
 248                         s = open_socket_in(SOCK_STREAM, port, 0,
 249                                            interpret_addr(lp_socket_address()),True);
 250                         if (s == -1)
 251                                 return(False);
 252
 253                         /* ready to listen */
 254                         set_socket_options(s,"SO_KEEPALIVE");
 255                         set_socket_options(s,user_socket_options);
 256
 257                         if (listen(s, 5) == -1) {
 258                                 DEBUG(0,("open_sockets_smbd: listen: %s\n",
 259                                          strerror(errno)));
 260                                 close(s);
 261                                 return False;
 262                         }
 263
 264                         fd_listenset[num_sockets] = s;
 265                         FD_SET(s,&listen_set);
 266
 267                         num_sockets++;
 268
 269                         if (num_sockets >= FD_SETSIZE) {
 270                                 DEBUG(0,("open_sockets_smbd: Too many sockets to bind to\n"));
 271                                 return False;
 272                         }
 273                 }
 274         }
 275
 276         SAFE_FREE(ports);
 277
 278         /* Listen to messages */
 279
 280         message_register(MSG_SMB_SAM_SYNC, msg_sam_sync);
 281         message_register(MSG_SMB_SAM_REPL, msg_sam_repl);
 282         message_register(MSG_SHUTDOWN, msg_exit_server);
 283
 284         /* now accept incoming connections - forking a new process
 285            for each incoming connection */
 286         DEBUG(2,("waiting for a connection\n"));
 287         while (1) {
 288                 fd_set lfds;
 289                 int num;
 290
 291                 /* Free up temporary memory from the main smbd. */
 292                 lp_talloc_free();
 293
 294                 /* Ensure we respond to PING and DEBUG messages from the main smbd. */
 295                 message_dispatch();
 296
 297                 memcpy((char *)&lfds, (char *)&listen_set,
 298                        sizeof(listen_set));
 299
 300                 num = sys_select(FD_SETSIZE,&lfds,NULL,NULL,NULL);
 301
 302                 if (num == -1 && errno == EINTR) {
 303                         if (got_sig_term) {
 304                                 exit_server("Caught TERM signal");
 305                         }
 306
 307                         /* check for sighup processing */
 308                         if (reload_after_sighup) {
 309                                 change_to_root_user();
 310                                 DEBUG(1,("Reloading services after SIGHUP\n"));
 311                                 reload_services(False);
 312                                 reload_after_sighup = 0;
 313                         }
 314
 315                         continue;
 316                 }
 317
 318                 /* check if we need to reload services */
 319                 check_reload(time(NULL));
 320
 321                 /* Find the sockets that are read-ready -
 322                    accept on these. */
 323                 for( ; num > 0; num--) {
 324                         struct sockaddr addr;
 325                         socklen_t in_addrlen = sizeof(addr);
 326
 327                         s = -1;
 328                         for(i = 0; i < num_sockets; i++) {
 329                                 if(FD_ISSET(fd_listenset[i],&lfds)) {
 330                                         s = fd_listenset[i];
 331                                         /* Clear this so we don't look
 332                                            at it again. */
 333                                         FD_CLR(fd_listenset[i],&lfds);
 334                                         break;
 335                                 }
 336                         }
 337
 338                         smbd_set_server_fd(accept(s,&addr,&in_addrlen));
 339
 340                         if (smbd_server_fd() == -1 && errno == EINTR)
 341                                 continue;
 342
 343                         if (smbd_server_fd() == -1) {
 344                                 DEBUG(0,("open_sockets_smbd: accept: %s\n",
 345                                          strerror(errno)));
 346                                 continue;
 347                         }
 348
 349                         if (smbd_server_fd() != -1 && sys_fork()==0) {
 350                                 /* Child code ... */
 351
 352                                 /* close the listening socket(s) */
 353                                 for(i = 0; i < num_sockets; i++)
 354                                         close(fd_listenset[i]);
 355
 356                                 /* close our standard file
 357                                    descriptors */
 358                                 close_low_fds(False);
 359                                 am_parent = 0;
 360
 361                                 set_socket_options(smbd_server_fd(),"SO_KEEPALIVE");
 362                                 set_socket_options(smbd_server_fd(),user_socket_options);
 363
 364                                 /* this is needed so that we get decent entries
 365                                    in smbstatus for port 445 connects */
 366                                 set_remote_machine_name(get_socket_addr(smbd_server_fd()));
 367
 368                                 /* Reset global variables in util.c so
 369                                    that client substitutions will be
 370                                    done correctly in the process.  */
 371                                 reset_globals_after_fork();
 372
 373                                 /* tdb needs special fork handling */
 374                                 if (tdb_reopen_all() == -1) {
 375                                         DEBUG(0,("tdb_reopen_all failed.\n"));
 376                                         return False;
 377                                 }
 378
 379                                 return True;
 380                         }
 381                         /* The parent doesn't need this socket */
 382                         close(smbd_server_fd());
 383
 384                         /* Sun May 6 18:56:14 2001 ackley@cs.unm.edu:
 385                                 Clear the closed fd info out of server_fd --
 386                                 and more importantly, out of client_fd in
 387                                 util_sock.c, to avoid a possible
 388                                 getpeername failure if we reopen the logs
 389                                 and use %I in the filename.
 390                         */
 391
 392                         smbd_set_server_fd(-1);
 393
 394                         /* Force parent to check log size after
 395                          * spawning child.  Fix from
 396                          * klausr@ITAP.Physik.Uni-Stuttgart.De.  The
 397                          * parent smbd will log to logserver.smb.  It
 398                          * writes only two messages for each child
 399                          * started/finished. But each child writes,
 400                          * say, 50 messages also in logserver.smb,
 401                          * begining with the debug_count of the
 402                          * parent, before the child opens its own log
 403                          * file logserver.client. In a worst case
 404                          * scenario the size of logserver.smb would be
 405                          * checked after about 50*50=2500 messages
 406                          * (ca. 100kb).
 407                          * */
 408                         force_check_log_size();
 409
 410                 } /* end for num */
 411         } /* end while 1 */
 412
 413 /* NOTREACHED   return True; */
 414 }
 415
 416 /****************************************************************************
 417  Reload the services file.
 418 **************************************************************************/
 419
 420 BOOL reload_services(BOOL test)
 421 {
 422         BOOL ret;
 423
 424         if (lp_loaded()) {
 425                 pstring fname;
 426                 pstrcpy(fname,lp_configfile());
 427                 if (file_exist(fname, NULL) &&
 428                     !strcsequal(fname, dyn_CONFIGFILE)) {
 429                         pstrcpy(dyn_CONFIGFILE, fname);
 430                         test = False;
 431                 }
 432         }
 433
 434         reopen_logs();
 435
 436         if (test && !lp_file_list_changed())
 437                 return(True);
 438
 439         lp_killunused(conn_snum_used);
 440
 441         ret = lp_load(dyn_CONFIGFILE, False, False, True);
 442
 443         load_printers();
 444
 445         /* perhaps the config filename is now set */
 446         if (!test)
 447                 reload_services(True);
 448
 449         reopen_logs();
 450
 451         load_interfaces();
 452
 453         {
 454                 if (smbd_server_fd() != -1) {
 455                         set_socket_options(smbd_server_fd(),"SO_KEEPALIVE");
 456                         set_socket_options(smbd_server_fd(), user_socket_options);
 457                 }
 458         }
 459
 460         mangle_reset_cache();
 461         reset_stat_cache();
 462
 463         /* this forces service parameters to be flushed */
 464         set_current_service(NULL,True);
 465
 466         return(ret);
 467 }
 468
 469 #if DUMP_CORE
 470 /*******************************************************************
 471 prepare to dump a core file - carefully!
 472 ********************************************************************/
 473 static BOOL dump_core(void)
 474 {
 475         char *p;
 476         pstring dname;
 477
 478         pstrcpy(dname,lp_logfile());
 479         if ((p=strrchr_m(dname,'/'))) *p=0;
 480         pstrcat(dname,"/corefiles");
 481         mkdir(dname,0700);
 482         sys_chown(dname,getuid(),getgid());
 483         chmod(dname,0700);
 484         if (chdir(dname)) return(False);
 485         umask(~(0700));
 486
 487 #ifdef HAVE_GETRLIMIT
 488 #ifdef RLIMIT_CORE
 489         {
 490                 struct rlimit rlp;
 491                 getrlimit(RLIMIT_CORE, &rlp);
 492                 rlp.rlim_cur = MAX(4*1024*1024,rlp.rlim_cur);
 493                 setrlimit(RLIMIT_CORE, &rlp);
 494                 getrlimit(RLIMIT_CORE, &rlp);
 495                 DEBUG(3,("Core limits now %d %d\n",
 496                          (int)rlp.rlim_cur,(int)rlp.rlim_max));
 497         }
 498 #endif
 499 #endif
 500
 501
 502         DEBUG(0,("Dumping core in %s\n", dname));
 503         abort();
 504         return(True);
 505 }
 506 #endif
 507
 508 /****************************************************************************
 509 update the current smbd process count
 510 ****************************************************************************/
 511
 512 static void decrement_smbd_process_count(void)
 513 {
 514         int32 total_smbds;
 515
 516         if (lp_max_smbd_processes()) {
 517                 total_smbds = 0;
 518                 tdb_change_int32_atomic(conn_tdb_ctx(), "INFO/total_smbds", &total_smbds, -1);
 519         }
 520 }
 521
 522 /****************************************************************************
 523  Exit the server.
 524 ****************************************************************************/
 525
 526 void exit_server(char *reason)
 527 {
 528         static int firsttime=1;
 529         extern char *last_inbuf;
 530         extern struct auth_context *negprot_global_auth_context;
 531
 532         if (!firsttime)
 533                 exit(0);
 534         firsttime = 0;
 535
 536         change_to_root_user();
 537         DEBUG(2,("Closing connections\n"));
 538
 539         if (negprot_global_auth_context) {
 540                 (negprot_global_auth_context->free)(&negprot_global_auth_context);
 541         }
 542
 543         conn_close_all();
 544
 545         invalidate_all_vuids();
 546
 547         print_notify_send_messages();
 548
 549         /* delete our entry in the connections database. */
 550         yield_connection(NULL,"");
 551
 552         respond_to_all_remaining_local_messages();
 553         decrement_smbd_process_count();
 554
 555 #ifdef WITH_DFS
 556         if (dcelogin_atmost_once) {
 557                 dfs_unlogin();
 558         }
 559 #endif
 560
 561         if (!reason) {
 562                 int oldlevel = DEBUGLEVEL;
 563                 DEBUGLEVEL = 10;
 564                 DEBUG(0,("Last message was %s\n",smb_fn_name(last_message)));
 565                 if (last_inbuf)
 566                         show_msg(last_inbuf);
 567                 DEBUGLEVEL = oldlevel;
 568                 DEBUG(0,("===============================================================\n"));
 569 #if DUMP_CORE
 570                 if (dump_core()) return;
 571 #endif
 572         }
 573
 574         locking_end();
 575         printing_end();
 576
 577         DEBUG(3,("Server exit (%s)\n", (reason ? reason : "")));
 578         exit(0);
 579 }
 580
 581 /****************************************************************************
 582  Initialise connect, service and file structs.
 583 ****************************************************************************/
 584
 585 static void init_structs(void )
 586 {
 587         /*
 588          * Set the machine NETBIOS name if not already
 589          * set from the config file.
 590          */
 591
 592         if (!*global_myname) {
 593                 char *p;
 594                 pstrcpy( global_myname, myhostname() );
 595                 p = strchr_m(global_myname, '.' );
 596                 if (p)
 597                         *p = 0;
 598         }
 599
 600         strupper(global_myname);
 601
 602         conn_init();
 603
 604         file_init();
 605
 606         /* for RPC pipes */
 607         init_rpc_pipe_hnd();
 608
 609         init_dptrs();
 610
 611         secrets_init();
 612
 613 }
 614
 615 /****************************************************************************
 616  main program.
 617 ****************************************************************************/
 618
 619  int main(int argc,const char *argv[])
 620 {
 621         /* shall I run as a daemon */
 622         static BOOL is_daemon = False;
 623         static BOOL interactive = False;
 624         static char *ports = NULL;
 625         int opt;
 626         poptContext pc;
 627
 628         struct poptOption long_options[] = {
 629                 POPT_AUTOHELP
 630         {"daemon", 'D', POPT_ARG_VAL, &is_daemon, True, "Become a daemon (default)" },
 631         {"interactive", 'i', POPT_ARG_VAL, &interactive, True, "Run interactive (not a daemon)"},
 632         {"build-options", 'b', POPT_ARG_NONE, NULL, 'b', "Print build options" },
 633         {"port", 'p', POPT_ARG_STRING, &ports, 0, "Listen on the specified ports"},
 634         {NULL, 0, POPT_ARG_INCLUDE_TABLE, popt_common_debug},
 635         {NULL, 0, POPT_ARG_INCLUDE_TABLE, popt_common_configfile},
 636         {NULL, 0, POPT_ARG_INCLUDE_TABLE, popt_common_socket_options},
 637         {NULL, 0, POPT_ARG_INCLUDE_TABLE, popt_common_log_base},
 638         {NULL, 0, POPT_ARG_INCLUDE_TABLE, popt_common_version},
 639         { NULL }
 640         };
 641
 642 #ifdef HAVE_SET_AUTH_PARAMETERS
 643         set_auth_parameters(argc,argv);
 644 #endif
 645
 646         pc = poptGetContext("smbd", argc, argv, long_options, 0);
 647
 648         while((opt = poptGetNextOpt(pc)) != -1) {
 649                 switch (opt)  {
 650                 case 'b':
 651                         build_options(True); /* Display output to screen as well as debug */
 652                         exit(0);
 653                         break;
 654                 }
 655         }
 656
 657         poptFreeContext(pc);
 658
 659 #ifdef HAVE_SETLUID
 660         /* needed for SecureWare on SCO */
 661         setluid(0);
 662 #endif
 663
 664         sec_init();
 665
 666         load_case_tables();
 667
 668         set_remote_machine_name("smbd");
 669
 670         setup_logging(argv[0],interactive);
 671
 672         /* we want to re-seed early to prevent time delays causing
 673            client problems at a later date. (tridge) */
 674         generate_random_buffer(NULL, 0, False);
 675
 676         /* make absolutely sure we run as root - to handle cases where people
 677            are crazy enough to have it setuid */
 678
 679         gain_root_privilege();
 680         gain_root_group_privilege();
 681
 682         fault_setup((void (*)(void *))exit_server);
 683         CatchSignal(SIGTERM , SIGNAL_CAST sig_term);
 684         CatchSignal(SIGHUP,SIGNAL_CAST sig_hup);
 685
 686         /* we are never interested in SIGPIPE */
 687         BlockSignals(True,SIGPIPE);
 688
 689 #if defined(SIGFPE)
 690         /* we are never interested in SIGFPE */
 691         BlockSignals(True,SIGFPE);
 692 #endif
 693
 694 #if defined(SIGUSR2)
 695         /* We are no longer interested in USR2 */
 696         BlockSignals(True,SIGUSR2);
 697 #endif
 698
 699         /* POSIX demands that signals are inherited. If the invoking process has
 700          * these signals masked, we will have problems, as we won't recieve them. */
 701         BlockSignals(False, SIGHUP);
 702         BlockSignals(False, SIGUSR1);
 703         BlockSignals(False, SIGTERM);
 704
 705         /* we want total control over the permissions on created files,
 706            so set our umask to 0 */
 707         umask(0);
 708
 709         init_sec_ctx();
 710
 711         reopen_logs();
 712
 713         DEBUG(0,( "smbd version %s started.\n", VERSION));
 714         DEBUGADD(0,( "Copyright Andrew Tridgell and the Samba Team 1992-2002\n"));
 715
 716         DEBUG(2,("uid=%d gid=%d euid=%d egid=%d\n",
 717                  (int)getuid(),(int)getgid(),(int)geteuid(),(int)getegid()));
 718
 719         /* Output the build options to the debug log */
 720         build_options(False);
 721
 722         if (sizeof(uint16) < 2 || sizeof(uint32) < 4) {
 723                 DEBUG(0,("ERROR: Samba is not configured correctly for the word size on your machine\n"));
 724                 exit(1);
 725         }
 726
 727         /*
 728          * Do this before reload_services.
 729          */
 730
 731         if (!reload_services(False))
 732                 return(-1);
 733
 734         init_structs();
 735
 736 #ifdef WITH_PROFILE
 737         if (!profile_setup(False)) {
 738                 DEBUG(0,("ERROR: failed to setup profiling\n"));
 739                 return -1;
 740         }
 741 #endif
 742
 743         fstrcpy(global_myworkgroup, lp_workgroup());
 744
 745         DEBUG(3,( "loaded services\n"));
 746
 747         if (!is_daemon && !is_a_socket(0)) {
 748                 if (!interactive)
 749                         DEBUG(0,("standard input is not a socket, assuming -D option\n"));
 750
 751                 /*
 752                  * Setting is_daemon here prevents us from eventually calling
 753                  * the open_sockets_inetd()
 754                  */
 755
 756                 is_daemon = True;
 757         }
 758
 759         if (is_daemon && !interactive) {
 760                 DEBUG( 3, ( "Becoming a daemon.\n" ) );
 761                 become_daemon();
 762         }
 763
 764 #if HAVE_SETPGID
 765         /*
 766          * If we're interactive we want to set our own process group for
 767          * signal management.
 768          */
 769         if (interactive)
 770                 setpgid( (pid_t)0, (pid_t)0);
 771 #endif
 772
 773         if (!directory_exist(lp_lockdir(), NULL)) {
 774                 mkdir(lp_lockdir(), 0755);
 775         }
 776
 777         if (is_daemon) {
 778                 pidfile_create("smbd");
 779         }
 780
 781         if (!message_init()) {
 782                 exit(1);
 783         }
 784         register_msg_pool_usage();
 785         register_dmalloc_msgs();
 786
 787         if (!print_backend_init())
 788                 exit(1);
 789
 790         /* Setup the main smbd so that we can get messages. */
 791         claim_connection(NULL,"",0,True,FLAG_MSG_GENERAL|FLAG_MSG_SMBD);
 792
 793         /*
 794            DO NOT ENABLE THIS TILL YOU COPE WITH KILLING THESE TASKS AND INETD
 795            THIS *killed* LOTS OF BUILD FARM MACHINES. IT CREATED HUNDREDS OF
 796            smbd PROCESSES THAT NEVER DIE
 797            start_background_queue();
 798         */
 799
 800         if (!open_sockets_smbd(is_daemon,ports))
 801                 exit(1);
 802
 803         /*
 804          * everything after this point is run after the fork()
 805          */
 806
 807         namecache_enable();
 808
 809         if (!locking_init(0))
 810                 exit(1);
 811
 812         if (!share_info_db_init())
 813                 exit(1);
 814
 815         if (!init_registry())
 816                 exit(1);
 817
 818         if(!initialize_password_db(False))
 819                 exit(1);
 820
 821         uni_group_cache_init(); /* Non-critical */
 822
 823         /* possibly reload the services file. */
 824         reload_services(True);
 825
 826         if(!get_global_sam_sid()) {
 827                 DEBUG(0,("ERROR: Samba cannot create a SAM SID.\n"));
 828                 exit(1);
 829         }
 830
 831         if (!init_account_policy()) {
 832                 DEBUG(0,("Could not open account policy tdb.\n"));
 833                 exit(1);
 834         }
 835
 836         if (*lp_rootdir()) {
 837                 if (sys_chroot(lp_rootdir()) == 0)
 838                         DEBUG(2,("Changed root to %s\n", lp_rootdir()));
 839         }
 840
 841         /* Setup oplocks */
 842         if (!init_oplocks())
 843                 exit(1);
 844
 845         /* Setup change notify */
 846         if (!init_change_notify())
 847                 exit(1);
 848
 849         /* re-initialise the timezone */
 850         TimeInit();
 851
 852         /* register our message handlers */
 853         message_register(MSG_SMB_FORCE_TDIS, msg_force_tdis);
 854         talloc_init_named("dummy!");
 855
 856         smbd_process();
 857
 858         uni_group_cache_shutdown();
 859         exit_server("normal exit");
 860         return(0);
 861 }