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 int am_parent = 1;
  26
  27 /* the last message the was processed */
  28 int last_message = -1;
  29
  30 /* a useful macro to debug the last message processed */
  31 #define LAST_MESSAGE() smb_fn_name(last_message)
  32
  33 extern pstring user_socket_options;
  34 extern SIG_ATOMIC_T got_sig_term;
  35 extern SIG_ATOMIC_T reload_after_sighup;
  36
  37 #ifdef WITH_DFS
  38 extern int dcelogin_atmost_once;
  39 #endif /* WITH_DFS */
  40
  41 /* really we should have a top level context structure that has the
  42    client file descriptor as an element. That would require a major rewrite :(
  43
  44    the following 2 functions are an alternative - they make the file
  45    descriptor private to smbd
  46  */
  47 static int server_fd = -1;
  48
  49 int smbd_server_fd(void)
  50 {
  51         return server_fd;
  52 }
  53
  54 static void smbd_set_server_fd(int fd)
  55 {
  56         server_fd = fd;
  57         client_setfd(fd);
  58 }
  59
  60 /****************************************************************************
  61  Terminate signal.
  62 ****************************************************************************/
  63
  64 static void sig_term(void)
  65 {
  66         got_sig_term = 1;
  67         sys_select_signal();
  68 }
  69
  70 /****************************************************************************
  71  Catch a sighup.
  72 ****************************************************************************/
  73
  74 static void sig_hup(int sig)
  75 {
  76         reload_after_sighup = 1;
  77         sys_select_signal();
  78 }
  79
  80 /****************************************************************************
  81   Send a SIGTERM to our process group.
  82 *****************************************************************************/
  83
  84 static void  killkids(void)
  85 {
  86         if(am_parent) kill(0,SIGTERM);
  87 }
  88
  89 /****************************************************************************
  90  Process a sam sync message - not sure whether to do this here or
  91  somewhere else.
  92 ****************************************************************************/
  93
  94 static void msg_sam_sync(int UNUSED(msg_type), pid_t UNUSED(pid),
  95                          void *UNUSED(buf), size_t UNUSED(len))
  96 {
  97         DEBUG(10, ("** sam sync message received, ignoring\n"));
  98 }
  99
 100 /****************************************************************************
 101  Process a sam sync replicate message - not sure whether to do this here or
 102  somewhere else.
 103 ****************************************************************************/
 104
 105 static void msg_sam_repl(int msg_type, pid_t pid, void *buf, size_t len)
 106 {
 107         uint32 low_serial;
 108
 109         if (len != sizeof(uint32))
 110                 return;
 111
 112         low_serial = *((uint32 *)buf);
 113
 114         DEBUG(3, ("received sam replication message, serial = 0x%04x\n",
 115                   low_serial));
 116 }
 117
 118 /****************************************************************************
 119  Open the socket communication - inetd.
 120 ****************************************************************************/
 121
 122 static BOOL open_sockets_inetd(void)
 123 {
 124         /* Started from inetd. fd 0 is the socket. */
 125         /* We will abort gracefully when the client or remote system
 126            goes away */
 127         smbd_set_server_fd(dup(0));
 128
 129         /* close our standard file descriptors */
 130         close_low_fds(False); /* Don't close stderr */
 131
 132         set_socket_options(smbd_server_fd(),"SO_KEEPALIVE");
 133         set_socket_options(smbd_server_fd(), user_socket_options);
 134
 135         return True;
 136 }
 137
 138 static void msg_exit_server(int msg_type, pid_t src, void *buf, size_t len)
 139 {
 140         exit_server("Got a SHUTDOWN message");
 141 }
 142
 143
 144 /****************************************************************************
 145  Open the socket communication.
 146 ****************************************************************************/
 147
 148 static BOOL open_sockets_smbd(BOOL is_daemon, BOOL interactive, const char *smb_ports)
 149 {
 150         int num_interfaces = iface_count();
 151         int num_sockets = 0;
 152         int fd_listenset[FD_SETSIZE];
 153         fd_set listen_set;
 154         int s;
 155         int i;
 156         char *ports;
 157
 158         if (!is_daemon) {
 159                 return open_sockets_inetd();
 160         }
 161
 162
 163 #ifdef HAVE_ATEXIT
 164         {
 165                 static int atexit_set;
 166                 if(atexit_set == 0) {
 167                         atexit_set=1;
 168                         atexit(killkids);
 169                 }
 170         }
 171 #endif
 172
 173         /* Stop zombies */
 174         CatchChild();
 175
 176         FD_ZERO(&listen_set);
 177
 178         /* use a reasonable default set of ports - listing on 445 and 139 */
 179         if (!smb_ports) {
 180                 ports = lp_smb_ports();
 181                 if (!ports || !*ports) {
 182                         ports = smb_xstrdup(SMB_PORTS);
 183                 } else {
 184                         ports = smb_xstrdup(ports);
 185                 }
 186         } else {
 187                 ports = smb_xstrdup(smb_ports);
 188         }
 189
 190         if (lp_interfaces() && lp_bind_interfaces_only()) {
 191                 /* We have been given an interfaces line, and been
 192                    told to only bind to those interfaces. Create a
 193                    socket per interface and bind to only these.
 194                 */
 195
 196                 /* Now open a listen socket for each of the
 197                    interfaces. */
 198                 for(i = 0; i < num_interfaces; i++) {
 199                         struct in_addr *ifip = iface_n_ip(i);
 200                         fstring tok;
 201                         const char *ptr;
 202
 203                         if(ifip == NULL) {
 204                                 DEBUG(0,("open_sockets_smbd: interface %d has NULL IP address !\n", i));
 205                                 continue;
 206                         }
 207
 208                         for (ptr=ports; next_token(&ptr, tok, NULL, sizeof(tok)); ) {
 209                                 unsigned port = atoi(tok);
 210                                 if (port == 0) continue;
 211                                 s = fd_listenset[num_sockets] = open_socket_in(SOCK_STREAM, port, 0, ifip->s_addr, True);
 212                                 if(s == -1)
 213                                         return False;
 214
 215                                 /* ready to listen */
 216                                 set_socket_options(s,"SO_KEEPALIVE");
 217                                 set_socket_options(s,user_socket_options);
 218
 219                                 if (listen(s, 5) == -1) {
 220                                         DEBUG(0,("listen: %s\n",strerror(errno)));
 221                                         close(s);
 222                                         return False;
 223                                 }
 224                                 FD_SET(s,&listen_set);
 225
 226                                 num_sockets++;
 227                                 if (num_sockets >= FD_SETSIZE) {
 228                                         DEBUG(0,("open_sockets_smbd: Too many sockets to bind to\n"));
 229                                         return False;
 230                                 }
 231                         }
 232                 }
 233         } else {
 234                 /* Just bind to 0.0.0.0 - accept connections
 235                    from anywhere. */
 236
 237                 fstring tok;
 238                 const char *ptr;
 239
 240                 num_interfaces = 1;
 241
 242                 for (ptr=ports; next_token(&ptr, tok, NULL, sizeof(tok)); ) {
 243                         unsigned port = atoi(tok);
 244                         if (port == 0) continue;
 245                         /* open an incoming socket */
 246                         s = open_socket_in(SOCK_STREAM, port, 0,
 247                                            interpret_addr(lp_socket_address()),True);
 248                         if (s == -1)
 249                                 return(False);
 250
 251                         /* ready to listen */
 252                         set_socket_options(s,"SO_KEEPALIVE");
 253                         set_socket_options(s,user_socket_options);
 254
 255                         if (listen(s, 5) == -1) {
 256                                 DEBUG(0,("open_sockets_smbd: listen: %s\n",
 257                                          strerror(errno)));
 258                                 close(s);
 259                                 return False;
 260                         }
 261
 262                         fd_listenset[num_sockets] = s;
 263                         FD_SET(s,&listen_set);
 264
 265                         num_sockets++;
 266
 267                         if (num_sockets >= FD_SETSIZE) {
 268                                 DEBUG(0,("open_sockets_smbd: Too many sockets to bind to\n"));
 269                                 return False;
 270                         }
 271                 }
 272         }
 273
 274         SAFE_FREE(ports);
 275
 276         /* Listen to messages */
 277
 278         message_register(MSG_SMB_SAM_SYNC, msg_sam_sync);
 279         message_register(MSG_SMB_SAM_REPL, msg_sam_repl);
 280         message_register(MSG_SHUTDOWN, msg_exit_server);
 281
 282         /* now accept incoming connections - forking a new process
 283            for each incoming connection */
 284         DEBUG(2,("waiting for a connection\n"));
 285         while (1) {
 286                 fd_set lfds;
 287                 int num;
 288
 289                 /* Free up temporary memory from the main smbd. */
 290                 lp_talloc_free();
 291
 292                 /* Ensure we respond to PING and DEBUG messages from the main smbd. */
 293                 message_dispatch();
 294
 295                 memcpy((char *)&lfds, (char *)&listen_set,
 296                        sizeof(listen_set));
 297
 298                 num = sys_select(FD_SETSIZE,&lfds,NULL,NULL,NULL);
 299
 300                 if (num == -1 && errno == EINTR) {
 301                         if (got_sig_term) {
 302                                 exit_server("Caught TERM signal");
 303                         }
 304
 305                         /* check for sighup processing */
 306                         if (reload_after_sighup) {
 307                                 change_to_root_user();
 308                                 DEBUG(1,("Reloading services after SIGHUP\n"));
 309                                 reload_services(False);
 310                                 reload_after_sighup = 0;
 311                         }
 312
 313                         continue;
 314                 }
 315
 316                 /* check if we need to reload services */
 317                 check_reload(time(NULL));
 318
 319                 /* Find the sockets that are read-ready -
 320                    accept on these. */
 321                 for( ; num > 0; num--) {
 322                         struct sockaddr addr;
 323                         socklen_t in_addrlen = sizeof(addr);
 324
 325                         s = -1;
 326                         for(i = 0; i < num_sockets; i++) {
 327                                 if(FD_ISSET(fd_listenset[i],&lfds)) {
 328                                         s = fd_listenset[i];
 329                                         /* Clear this so we don't look
 330                                            at it again. */
 331                                         FD_CLR(fd_listenset[i],&lfds);
 332                                         break;
 333                                 }
 334                         }
 335
 336                         smbd_set_server_fd(accept(s,&addr,&in_addrlen));
 337
 338                         if (smbd_server_fd() == -1 && errno == EINTR)
 339                                 continue;
 340
 341                         if (smbd_server_fd() == -1) {
 342                                 DEBUG(0,("open_sockets_smbd: accept: %s\n",
 343                                          strerror(errno)));
 344                                 continue;
 345                         }
 346
 347                         if (smbd_server_fd() != -1 && interactive)
 348                                 return True;
 349
 350                         if (smbd_server_fd() != -1 && sys_fork()==0) {
 351                                 /* Child code ... */
 352
 353                                 /* close the listening socket(s) */
 354                                 for(i = 0; i < num_sockets; i++)
 355                                         close(fd_listenset[i]);
 356
 357                                 /* close our standard file
 358                                    descriptors */
 359                                 close_low_fds(False);
 360                                 am_parent = 0;
 361
 362                                 set_socket_options(smbd_server_fd(),"SO_KEEPALIVE");
 363                                 set_socket_options(smbd_server_fd(),user_socket_options);
 364
 365                                 /* this is needed so that we get decent entries
 366                                    in smbstatus for port 445 connects */
 367                                 set_remote_machine_name(get_socket_addr(smbd_server_fd()));
 368
 369                                 /* Reset global variables in util.c so
 370                                    that client substitutions will be
 371                                    done correctly in the process.  */
 372                                 reset_globals_after_fork();
 373
 374                                 /* tdb needs special fork handling */
 375                                 if (tdb_reopen_all() == -1) {
 376                                         DEBUG(0,("tdb_reopen_all failed.\n"));
 377                                         return False;
 378                                 }
 379
 380                                 /* Load DSO's */
 381                                 if(lp_modules())
 382                                         smb_load_modules(lp_modules());
 383
 384                                 return True;
 385                         }
 386                         /* The parent doesn't need this socket */
 387                         close(smbd_server_fd());
 388
 389                         /* Sun May 6 18:56:14 2001 ackley@cs.unm.edu:
 390                                 Clear the closed fd info out of server_fd --
 391                                 and more importantly, out of client_fd in
 392                                 util_sock.c, to avoid a possible
 393                                 getpeername failure if we reopen the logs
 394                                 and use %I in the filename.
 395                         */
 396
 397                         smbd_set_server_fd(-1);
 398
 399                         /* Force parent to check log size after
 400                          * spawning child.  Fix from
 401                          * klausr@ITAP.Physik.Uni-Stuttgart.De.  The
 402                          * parent smbd will log to logserver.smb.  It
 403                          * writes only two messages for each child
 404                          * started/finished. But each child writes,
 405                          * say, 50 messages also in logserver.smb,
 406                          * begining with the debug_count of the
 407                          * parent, before the child opens its own log
 408                          * file logserver.client. In a worst case
 409                          * scenario the size of logserver.smb would be
 410                          * checked after about 50*50=2500 messages
 411                          * (ca. 100kb).
 412                          * */
 413                         force_check_log_size();
 414
 415                 } /* end for num */
 416         } /* end while 1 */
 417
 418 /* NOTREACHED   return True; */
 419 }
 420
 421 /****************************************************************************
 422  Reload the services file.
 423 **************************************************************************/
 424
 425 BOOL reload_services(BOOL test)
 426 {
 427         BOOL ret;
 428
 429         if (lp_loaded()) {
 430                 pstring fname;
 431                 pstrcpy(fname,lp_configfile());
 432                 if (file_exist(fname, NULL) &&
 433                     !strcsequal(fname, dyn_CONFIGFILE)) {
 434                         pstrcpy(dyn_CONFIGFILE, fname);
 435                         test = False;
 436                 }
 437         }
 438
 439         reopen_logs();
 440
 441         if (test && !lp_file_list_changed())
 442                 return(True);
 443
 444         lp_killunused(conn_snum_used);
 445
 446         ret = lp_load(dyn_CONFIGFILE, False, False, True);
 447
 448         load_printers();
 449
 450         /* perhaps the config filename is now set */
 451         if (!test)
 452                 reload_services(True);
 453
 454         reopen_logs();
 455
 456         load_interfaces();
 457
 458         {
 459                 if (smbd_server_fd() != -1) {
 460                         set_socket_options(smbd_server_fd(),"SO_KEEPALIVE");
 461                         set_socket_options(smbd_server_fd(), user_socket_options);
 462                 }
 463         }
 464
 465         mangle_reset_cache();
 466         reset_stat_cache();
 467
 468         /* this forces service parameters to be flushed */
 469         set_current_service(NULL,True);
 470
 471         return(ret);
 472 }
 473
 474 /*******************************************************************
 475  Print out all talloc memory info.
 476 ********************************************************************/
 477
 478 void return_all_talloc_info(int msg_type, pid_t src_pid, void *buf, size_t len)
 479 {
 480         TALLOC_CTX *ctx = talloc_init("info context");
 481         char *info = NULL;
 482
 483         if (!ctx)
 484                 return;
 485
 486         info = talloc_describe_all(ctx);
 487         if (info)
 488                 DEBUG(10,(info));
 489         message_send_pid(src_pid, MSG_TALLOC_USAGE, info, info ? strlen(info) + 1 : 0, True);
 490         talloc_destroy(ctx);
 491 }
 492
 493 #if DUMP_CORE
 494 /*******************************************************************
 495 prepare to dump a core file - carefully!
 496 ********************************************************************/
 497 static BOOL dump_core(void)
 498 {
 499         char *p;
 500         pstring dname;
 501
 502         pstrcpy(dname,lp_logfile());
 503         if ((p=strrchr_m(dname,'/'))) *p=0;
 504         pstrcat(dname,"/corefiles");
 505         mkdir(dname,0700);
 506         sys_chown(dname,getuid(),getgid());
 507         chmod(dname,0700);
 508         if (chdir(dname)) return(False);
 509         umask(~(0700));
 510
 511 #ifdef HAVE_GETRLIMIT
 512 #ifdef RLIMIT_CORE
 513         {
 514                 struct rlimit rlp;
 515                 getrlimit(RLIMIT_CORE, &rlp);
 516                 rlp.rlim_cur = MAX(4*1024*1024,rlp.rlim_cur);
 517                 setrlimit(RLIMIT_CORE, &rlp);
 518                 getrlimit(RLIMIT_CORE, &rlp);
 519                 DEBUG(3,("Core limits now %d %d\n",
 520                          (int)rlp.rlim_cur,(int)rlp.rlim_max));
 521         }
 522 #endif
 523 #endif
 524
 525
 526         DEBUG(0,("Dumping core in %s\n", dname));
 527         abort();
 528         return(True);
 529 }
 530 #endif
 531
 532 /****************************************************************************
 533  Exit the server.
 534 ****************************************************************************/
 535
 536 void exit_server(const char *reason)
 537 {
 538         static int firsttime=1;
 539         extern char *last_inbuf;
 540         extern struct auth_context *negprot_global_auth_context;
 541
 542         if (!firsttime)
 543                 exit(0);
 544         firsttime = 0;
 545
 546         change_to_root_user();
 547         DEBUG(2,("Closing connections\n"));
 548
 549         if (negprot_global_auth_context) {
 550                 (negprot_global_auth_context->free)(&negprot_global_auth_context);
 551         }
 552
 553         conn_close_all();
 554
 555         invalidate_all_vuids();
 556
 557         print_notify_send_messages();
 558
 559         /* delete our entry in the connections database. */
 560         yield_connection(NULL,"");
 561
 562         respond_to_all_remaining_local_messages();
 563         decrement_smbd_process_count();
 564
 565 #ifdef WITH_DFS
 566         if (dcelogin_atmost_once) {
 567                 dfs_unlogin();
 568         }
 569 #endif
 570
 571         if (!reason) {
 572                 int oldlevel = DEBUGLEVEL;
 573                 DEBUGLEVEL = 10;
 574                 DEBUG(0,("Last message was %s\n",smb_fn_name(last_message)));
 575                 if (last_inbuf)
 576                         show_msg(last_inbuf);
 577                 DEBUGLEVEL = oldlevel;
 578                 DEBUG(0,("===============================================================\n"));
 579 #if DUMP_CORE
 580                 if (dump_core()) return;
 581 #endif
 582         }
 583
 584         locking_end();
 585         printing_end();
 586
 587         DEBUG(3,("Server exit (%s)\n", (reason ? reason : "")));
 588         exit(0);
 589 }
 590
 591 /****************************************************************************
 592  Initialise connect, service and file structs.
 593 ****************************************************************************/
 594
 595 static BOOL init_structs(void )
 596 {
 597         /*
 598          * Set the machine NETBIOS name if not already
 599          * set from the config file.
 600          */
 601
 602         if (!init_names())
 603                 return False;
 604
 605         conn_init();
 606
 607         file_init();
 608
 609         /* for RPC pipes */
 610         init_rpc_pipe_hnd();
 611
 612         init_dptrs();
 613
 614         secrets_init();
 615
 616         return True;
 617 }
 618
 619 /****************************************************************************
 620  main program.
 621 ****************************************************************************/
 622
 623  int main(int argc,const char *argv[])
 624 {
 625         /* shall I run as a daemon */
 626         static BOOL is_daemon = False;
 627         static BOOL interactive = False;
 628         static BOOL Fork = True;
 629         static BOOL log_stdout = False;
 630         static char *ports = NULL;
 631         int opt;
 632         poptContext pc;
 633
 634         struct poptOption long_options[] = {
 635                 POPT_AUTOHELP
 636         {"daemon", 'D', POPT_ARG_VAL, &is_daemon, True, "Become a daemon (default)" },
 637         {"interactive", 'i', POPT_ARG_VAL, &interactive, True, "Run interactive (not a daemon)"},
 638         {"foreground", 'F', POPT_ARG_VAL, &Fork, False, "Run daemon in foreground (for daemontools & etc)" },
 639         {"log-stdout", 'S', POPT_ARG_VAL, &log_stdout, True, "Log to stdout" },
 640         {"build-options", 'b', POPT_ARG_NONE, NULL, 'b', "Print build options" },
 641         {"port", 'p', POPT_ARG_STRING, &ports, 0, "Listen on the specified ports"},
 642         {NULL, 0, POPT_ARG_INCLUDE_TABLE, popt_common_debug},
 643         {NULL, 0, POPT_ARG_INCLUDE_TABLE, popt_common_configfile},
 644         {NULL, 0, POPT_ARG_INCLUDE_TABLE, popt_common_socket_options},
 645         {NULL, 0, POPT_ARG_INCLUDE_TABLE, popt_common_log_base},
 646         {NULL, 0, POPT_ARG_INCLUDE_TABLE, popt_common_version},
 647         { NULL }
 648         };
 649
 650 #ifdef HAVE_SET_AUTH_PARAMETERS
 651         set_auth_parameters(argc,argv);
 652 #endif
 653
 654         pc = poptGetContext("smbd", argc, argv, long_options, 0);
 655
 656         while((opt = poptGetNextOpt(pc)) != -1) {
 657                 switch (opt)  {
 658                 case 'b':
 659                         build_options(True); /* Display output to screen as well as debug */
 660                         exit(0);
 661                         break;
 662                 }
 663         }
 664
 665         poptFreeContext(pc);
 666
 667 #ifdef HAVE_SETLUID
 668         /* needed for SecureWare on SCO */
 669         setluid(0);
 670 #endif
 671
 672         sec_init();
 673
 674         load_case_tables();
 675
 676         set_remote_machine_name("smbd");
 677
 678         if (interactive) {
 679                 Fork = False;
 680                 log_stdout = True;
 681         }
 682
 683         if (log_stdout && Fork) {
 684                 DEBUG(0,("ERROR: Can't log to stdout (-S) unless daemon is in foreground (-F) or interactive (-i)\n"));
 685                 exit(1);
 686         }
 687
 688         setup_logging(argv[0],log_stdout);
 689
 690         /* we want to re-seed early to prevent time delays causing
 691            client problems at a later date. (tridge) */
 692         generate_random_buffer(NULL, 0, False);
 693
 694         /* make absolutely sure we run as root - to handle cases where people
 695            are crazy enough to have it setuid */
 696
 697         gain_root_privilege();
 698         gain_root_group_privilege();
 699
 700         fault_setup((void (*)(void *))exit_server);
 701         CatchSignal(SIGTERM , SIGNAL_CAST sig_term);
 702         CatchSignal(SIGHUP,SIGNAL_CAST sig_hup);
 703
 704         /* we are never interested in SIGPIPE */
 705         BlockSignals(True,SIGPIPE);
 706
 707 #if defined(SIGFPE)
 708         /* we are never interested in SIGFPE */
 709         BlockSignals(True,SIGFPE);
 710 #endif
 711
 712 #if defined(SIGUSR2)
 713         /* We are no longer interested in USR2 */
 714         BlockSignals(True,SIGUSR2);
 715 #endif
 716
 717         /* POSIX demands that signals are inherited. If the invoking process has
 718          * these signals masked, we will have problems, as we won't recieve them. */
 719         BlockSignals(False, SIGHUP);
 720         BlockSignals(False, SIGUSR1);
 721         BlockSignals(False, SIGTERM);
 722
 723         /* we want total control over the permissions on created files,
 724            so set our umask to 0 */
 725         umask(0);
 726
 727         init_sec_ctx();
 728
 729         reopen_logs();
 730
 731         DEBUG(0,( "smbd version %s started.\n", VERSION));
 732         DEBUGADD(0,( "Copyright Andrew Tridgell and the Samba Team 1992-2002\n"));
 733
 734         DEBUG(2,("uid=%d gid=%d euid=%d egid=%d\n",
 735                  (int)getuid(),(int)getgid(),(int)geteuid(),(int)getegid()));
 736
 737         /* Output the build options to the debug log */
 738         build_options(False);
 739
 740         if (sizeof(uint16) < 2 || sizeof(uint32) < 4) {
 741                 DEBUG(0,("ERROR: Samba is not configured correctly for the word size on your machine\n"));
 742                 exit(1);
 743         }
 744
 745         /*
 746          * Do this before reload_services.
 747          */
 748
 749         if (!reload_services(False))
 750                 return(-1);
 751
 752         init_structs();
 753
 754 #ifdef WITH_PROFILE
 755         if (!profile_setup(False)) {
 756                 DEBUG(0,("ERROR: failed to setup profiling\n"));
 757                 return -1;
 758         }
 759 #endif
 760
 761         DEBUG(3,( "loaded services\n"));
 762
 763         if (!is_daemon && !is_a_socket(0)) {
 764                 if (!interactive)
 765                         DEBUG(0,("standard input is not a socket, assuming -D option\n"));
 766
 767                 /*
 768                  * Setting is_daemon here prevents us from eventually calling
 769                  * the open_sockets_inetd()
 770                  */
 771
 772                 is_daemon = True;
 773         }
 774
 775         if (is_daemon && !interactive) {
 776                 DEBUG( 3, ( "Becoming a daemon.\n" ) );
 777                 become_daemon(Fork);
 778         }
 779
 780 #if HAVE_SETPGID
 781         /*
 782          * If we're interactive we want to set our own process group for
 783          * signal management.
 784          */
 785         if (interactive)
 786                 setpgid( (pid_t)0, (pid_t)0);
 787 #endif
 788
 789         if (!directory_exist(lp_lockdir(), NULL))
 790                 mkdir(lp_lockdir(), 0755);
 791
 792         if (is_daemon)
 793                 pidfile_create("smbd");
 794
 795         if (!message_init())
 796                 exit(1);
 797
 798         register_msg_pool_usage();
 799         register_dmalloc_msgs();
 800         message_register(MSG_REQ_TALLOC_USAGE, return_all_talloc_info);
 801
 802         if (!print_backend_init())
 803                 exit(1);
 804
 805         /* Setup the main smbd so that we can get messages. */
 806         claim_connection(NULL,"",0,True,FLAG_MSG_GENERAL|FLAG_MSG_SMBD);
 807
 808         /*
 809            DO NOT ENABLE THIS TILL YOU COPE WITH KILLING THESE TASKS AND INETD
 810            THIS *killed* LOTS OF BUILD FARM MACHINES. IT CREATED HUNDREDS OF
 811            smbd PROCESSES THAT NEVER DIE
 812            start_background_queue();
 813         */
 814
 815         if (!open_sockets_smbd(is_daemon, interactive, ports))
 816                 exit(1);
 817
 818         /*
 819          * everything after this point is run after the fork()
 820          */
 821
 822         namecache_enable();
 823
 824         if (!locking_init(0))
 825                 exit(1);
 826
 827         if (!share_info_db_init())
 828                 exit(1);
 829
 830         if (!init_registry())
 831                 exit(1);
 832
 833         if(!initialize_password_db(False))
 834                 exit(1);
 835
 836         uni_group_cache_init(); /* Non-critical */
 837
 838         /* possibly reload the services file. */
 839         reload_services(True);
 840
 841         if(!get_global_sam_sid()) {
 842                 DEBUG(0,("ERROR: Samba cannot create a SAM SID.\n"));
 843                 exit(1);
 844         }
 845
 846         if (!init_account_policy()) {
 847                 DEBUG(0,("Could not open account policy tdb.\n"));
 848                 exit(1);
 849         }
 850
 851         if (*lp_rootdir()) {
 852                 if (sys_chroot(lp_rootdir()) == 0)
 853                         DEBUG(2,("Changed root to %s\n", lp_rootdir()));
 854         }
 855
 856         /* Setup oplocks */
 857         if (!init_oplocks())
 858                 exit(1);
 859
 860         /* Setup change notify */
 861         if (!init_change_notify())
 862                 exit(1);
 863
 864         /* re-initialise the timezone */
 865         TimeInit();
 866
 867         /* register our message handlers */
 868         message_register(MSG_SMB_FORCE_TDIS, msg_force_tdis);
 869
 870         smbd_process();
 871
 872         uni_group_cache_shutdown();
 873         namecache_shutdown();
 874         exit_server("normal exit");
 875         return(0);
 876 }