source3/smbd/server.c

   1 /*
   2    Unix SMB/Netbios implementation.
   3    Version 1.9.
   4    Main SMB server routines
   5    Copyright (C) Andrew Tridgell 1992-1998
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 2 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program; if not, write to the Free Software
  19    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  20 */
  21
  22 #include "includes.h"
  23
  24 pstring servicesf = CONFIGFILE;
  25 extern pstring debugf;
  26 extern fstring global_myworkgroup;
  27 extern pstring global_myname;
  28
  29 int am_parent = 1;
  30
  31 /* the last message the was processed */
  32 int last_message = -1;
  33
  34 /* a useful macro to debug the last message processed */
  35 #define LAST_MESSAGE() smb_fn_name(last_message)
  36
  37 extern int DEBUGLEVEL;
  38
  39 extern pstring user_socket_options;
  40
  41 #ifdef WITH_DFS
  42 extern int dcelogin_atmost_once;
  43 #endif /* WITH_DFS */
  44
  45 extern fstring remote_machine;
  46
  47 /* really we should have a top level context structure that has the
  48    client file descriptor as an element. That would require a major rewrite :(
  49
  50    the following 2 functions are an alternative - they make the file
  51    descriptor private to smbd
  52  */
  53 static int server_fd = -1;
  54
  55 int smbd_server_fd(void)
  56 {
  57         return server_fd;
  58 }
  59
  60 void smbd_set_server_fd(int fd)
  61 {
  62         server_fd = fd;
  63         client_setfd(fd);
  64 }
  65
  66 /****************************************************************************
  67   when exiting, take the whole family
  68 ****************************************************************************/
  69 static void *dflt_sig(void)
  70 {
  71         exit_server("caught signal");
  72         return NULL;
  73 }
  74
  75 /****************************************************************************
  76   Send a SIGTERM to our process group.
  77 *****************************************************************************/
  78 static void  killkids(void)
  79 {
  80         if(am_parent) kill(0,SIGTERM);
  81 }
  82
  83
  84 /****************************************************************************
  85   open the socket communication
  86 ****************************************************************************/
  87 static BOOL open_sockets_inetd(void)
  88 {
  89         /* Started from inetd. fd 0 is the socket. */
  90         /* We will abort gracefully when the client or remote system
  91            goes away */
  92         smbd_set_server_fd(dup(0));
  93
  94         /* close our standard file descriptors */
  95         close_low_fds();
  96
  97         set_socket_options(smbd_server_fd(),"SO_KEEPALIVE");
  98         set_socket_options(smbd_server_fd(),user_socket_options);
  99
 100         return True;
 101 }
 102
 103
 104 /****************************************************************************
 105   open the socket communication
 106 ****************************************************************************/
 107 static BOOL open_sockets(BOOL is_daemon,int port)
 108 {
 109         int num_interfaces = iface_count();
 110         int fd_listenset[FD_SETSIZE];
 111         fd_set listen_set;
 112         int s;
 113         int i;
 114
 115         if (!is_daemon) {
 116                 return open_sockets_inetd();
 117         }
 118
 119
 120 #ifdef HAVE_ATEXIT
 121         {
 122                 static int atexit_set;
 123                 if(atexit_set == 0) {
 124                         atexit_set=1;
 125                         atexit(killkids);
 126                 }
 127         }
 128 #endif
 129
 130         /* Stop zombies */
 131         CatchChild();
 132
 133
 134         FD_ZERO(&listen_set);
 135
 136         if(lp_interfaces() && lp_bind_interfaces_only()) {
 137                 /* We have been given an interfaces line, and been
 138                    told to only bind to those interfaces. Create a
 139                    socket per interface and bind to only these.
 140                 */
 141
 142                 if(num_interfaces > FD_SETSIZE) {
 143                         DEBUG(0,("open_sockets: Too many interfaces specified to bind to. Number was %d \
 144 max can be %d\n",
 145                                  num_interfaces, FD_SETSIZE));
 146                         return False;
 147                 }
 148
 149                 /* Now open a listen socket for each of the
 150                    interfaces. */
 151                 for(i = 0; i < num_interfaces; i++) {
 152                         struct in_addr *ifip = iface_n_ip(i);
 153
 154                         if(ifip == NULL) {
 155                                 DEBUG(0,("open_sockets: interface %d has NULL IP address !\n", i));
 156                                 continue;
 157                         }
 158                         s = fd_listenset[i] = open_socket_in(SOCK_STREAM, port, 0, ifip->s_addr, True);
 159                         if(s == -1)
 160                                 return False;
 161
 162                         /* ready to listen */
 163                         set_socket_options(s,"SO_KEEPALIVE");
 164                         set_socket_options(s,user_socket_options);
 165
 166                         if (listen(s, 5) == -1) {
 167                                 DEBUG(0,("listen: %s\n",strerror(errno)));
 168                                 close(s);
 169                                 return False;
 170                         }
 171                         FD_SET(s,&listen_set);
 172                 }
 173         } else {
 174                 /* Just bind to 0.0.0.0 - accept connections
 175                    from anywhere. */
 176                 num_interfaces = 1;
 177
 178                 /* open an incoming socket */
 179                 s = open_socket_in(SOCK_STREAM, port, 0,
 180                                    interpret_addr(lp_socket_address()),True);
 181                 if (s == -1)
 182                         return(False);
 183
 184                 /* ready to listen */
 185                 set_socket_options(s,"SO_KEEPALIVE");
 186                 set_socket_options(s,user_socket_options);
 187
 188                 if (listen(s, 5) == -1) {
 189                         DEBUG(0,("open_sockets: listen: %s\n",
 190                                  strerror(errno)));
 191                         close(s);
 192                         return False;
 193                 }
 194
 195                 fd_listenset[0] = s;
 196                 FD_SET(s,&listen_set);
 197         }
 198
 199         /* now accept incoming connections - forking a new process
 200            for each incoming connection */
 201         DEBUG(2,("waiting for a connection\n"));
 202         while (1) {
 203                 fd_set lfds;
 204                 int num;
 205
 206                 /* Free up temporary memory from the main smbd. */
 207                 lp_talloc_free();
 208
 209                 /* Ensure we respond to PING and DEBUG messages from the main smbd. */
 210                 message_dispatch();
 211
 212                 memcpy((char *)&lfds, (char *)&listen_set,
 213                        sizeof(listen_set));
 214
 215                 num = sys_select(FD_SETSIZE,&lfds,NULL);
 216
 217                 if (num == -1 && errno == EINTR) {
 218                         extern VOLATILE sig_atomic_t reload_after_sighup;
 219
 220                         /* check for sighup processing */
 221                         if (reload_after_sighup) {
 222                                 unbecome_user();
 223                                 DEBUG(1,("Reloading services after SIGHUP\n"));
 224                                 reload_services(False);
 225                                 reload_after_sighup = False;
 226                         }
 227
 228                         continue;
 229                 }
 230
 231                 /* check if we need to reload services */
 232                 check_reload(time(NULL));
 233
 234                 /* Find the sockets that are read-ready -
 235                    accept on these. */
 236                 for( ; num > 0; num--) {
 237                         struct sockaddr addr;
 238                         socklen_t in_addrlen = sizeof(addr);
 239
 240                         s = -1;
 241                         for(i = 0; i < num_interfaces; i++) {
 242                                 if(FD_ISSET(fd_listenset[i],&lfds)) {
 243                                         s = fd_listenset[i];
 244                                         /* Clear this so we don't look
 245                                            at it again. */
 246                                         FD_CLR(fd_listenset[i],&lfds);
 247                                         break;
 248                                 }
 249                         }
 250
 251                         smbd_set_server_fd(accept(s,&addr,&in_addrlen));
 252
 253                         if (smbd_server_fd() == -1 && errno == EINTR)
 254                                 continue;
 255
 256                         if (smbd_server_fd() == -1) {
 257                                 DEBUG(0,("open_sockets: accept: %s\n",
 258                                          strerror(errno)));
 259                                 continue;
 260                         }
 261
 262                         if (smbd_server_fd() != -1 && sys_fork()==0) {
 263                                 /* Child code ... */
 264
 265                                 /* close the listening socket(s) */
 266                                 for(i = 0; i < num_interfaces; i++)
 267                                         close(fd_listenset[i]);
 268
 269                                 /* close our standard file
 270                                    descriptors */
 271                                 close_low_fds();
 272                                 am_parent = 0;
 273
 274                                 set_socket_options(smbd_server_fd(),"SO_KEEPALIVE");
 275                                 set_socket_options(smbd_server_fd(),user_socket_options);
 276
 277                                 /* Reset global variables in util.c so
 278                                    that client substitutions will be
 279                                    done correctly in the process.  */
 280                                 reset_globals_after_fork();
 281
 282                                 return True;
 283                         }
 284                         /* The parent doesn't need this socket */
 285                         close(smbd_server_fd());
 286
 287                         /* Sun May 6 18:56:14 2001 ackley@cs.unm.edu:
 288                                 Clear the closed fd info out of server_fd --
 289                                 and more importantly, out of client_fd in
 290                                 util_sock.c, to avoid a possible
 291                                 getpeername failure if we reopen the logs
 292                                 and use %I in the filename.
 293                         */
 294
 295                         smbd_set_server_fd(-1);
 296
 297                         /* Force parent to check log size after
 298                          * spawning child.  Fix from
 299                          * klausr@ITAP.Physik.Uni-Stuttgart.De.  The
 300                          * parent smbd will log to logserver.smb.  It
 301                          * writes only two messages for each child
 302                          * started/finished. But each child writes,
 303                          * say, 50 messages also in logserver.smb,
 304                          * begining with the debug_count of the
 305                          * parent, before the child opens its own log
 306                          * file logserver.client. In a worst case
 307                          * scenario the size of logserver.smb would be
 308                          * checked after about 50*50=2500 messages
 309                          * (ca. 100kb).
 310                          * */
 311                         force_check_log_size();
 312
 313                 } /* end for num */
 314         } /* end while 1 */
 315
 316 /* NOTREACHED   return True; */
 317 }
 318
 319 /****************************************************************************
 320   reload the services file
 321   **************************************************************************/
 322 BOOL reload_services(BOOL test)
 323 {
 324         BOOL ret;
 325
 326         if (lp_loaded()) {
 327                 pstring fname;
 328                 pstrcpy(fname,lp_configfile());
 329                 if (file_exist(fname,NULL) && !strcsequal(fname,servicesf)) {
 330                         pstrcpy(servicesf,fname);
 331                         test = False;
 332                 }
 333         }
 334
 335         reopen_logs();
 336
 337         if (test && !lp_file_list_changed())
 338                 return(True);
 339
 340         lp_killunused(conn_snum_used);
 341
 342         ret = lp_load(servicesf,False,False,True);
 343
 344         load_printers();
 345
 346         /* perhaps the config filename is now set */
 347         if (!test)
 348                 reload_services(True);
 349
 350         reopen_logs();
 351
 352         load_interfaces();
 353
 354         {
 355                 if (smbd_server_fd() != -1) {
 356                         set_socket_options(smbd_server_fd(),"SO_KEEPALIVE");
 357                         set_socket_options(smbd_server_fd(),user_socket_options);
 358                 }
 359         }
 360
 361         reset_mangled_cache();
 362         reset_stat_cache();
 363
 364         /* this forces service parameters to be flushed */
 365         become_service(NULL,True);
 366
 367         return(ret);
 368 }
 369
 370
 371
 372 /****************************************************************************
 373  Catch a sighup.
 374 ****************************************************************************/
 375
 376 VOLATILE sig_atomic_t reload_after_sighup = False;
 377
 378 static void sig_hup(int sig)
 379 {
 380         BlockSignals(True,SIGHUP);
 381         DEBUG(0,("Got SIGHUP\n"));
 382
 383         sys_select_signal();
 384         reload_after_sighup = True;
 385         BlockSignals(False,SIGHUP);
 386 }
 387
 388
 389
 390 #if DUMP_CORE
 391 /*******************************************************************
 392 prepare to dump a core file - carefully!
 393 ********************************************************************/
 394 static BOOL dump_core(void)
 395 {
 396         char *p;
 397         pstring dname;
 398         pstrcpy(dname,debugf);
 399         if ((p=strrchr_m(dname,'/'))) *p=0;
 400         pstrcat(dname,"/corefiles");
 401         mkdir(dname,0700);
 402         sys_chown(dname,getuid(),getgid());
 403         chmod(dname,0700);
 404         if (chdir(dname)) return(False);
 405         umask(~(0700));
 406
 407 #ifdef HAVE_GETRLIMIT
 408 #ifdef RLIMIT_CORE
 409         {
 410                 struct rlimit rlp;
 411                 getrlimit(RLIMIT_CORE, &rlp);
 412                 rlp.rlim_cur = MAX(4*1024*1024,rlp.rlim_cur);
 413                 setrlimit(RLIMIT_CORE, &rlp);
 414                 getrlimit(RLIMIT_CORE, &rlp);
 415                 DEBUG(3,("Core limits now %d %d\n",
 416                          (int)rlp.rlim_cur,(int)rlp.rlim_max));
 417         }
 418 #endif
 419 #endif
 420
 421
 422         DEBUG(0,("Dumping core in %s\n",dname));
 423         abort();
 424         return(True);
 425 }
 426 #endif
 427
 428 /****************************************************************************
 429 update the current smbd process count
 430 ****************************************************************************/
 431
 432 static void decrement_smbd_process_count(void)
 433 {
 434         int total_smbds;
 435
 436         if (lp_max_smbd_processes()) {
 437                 total_smbds = 0;
 438                 tdb_change_int_atomic(conn_tdb_ctx(), "INFO/total_smbds", &total_smbds, -1);
 439         }
 440 }
 441
 442 /****************************************************************************
 443 exit the server
 444 ****************************************************************************/
 445 void exit_server(char *reason)
 446 {
 447         static int firsttime=1;
 448         extern char *last_inbuf;
 449
 450
 451         if (!firsttime) exit(0);
 452         firsttime = 0;
 453
 454         unbecome_user();
 455         DEBUG(2,("Closing connections\n"));
 456
 457         conn_close_all();
 458
 459         invalidate_all_vuids();
 460
 461         /* delete our entry in the connections database. */
 462         if (lp_status(-1)) {
 463                 yield_connection(NULL,"",MAXSTATUS);
 464         }
 465
 466         respond_to_all_remaining_local_messages();
 467         decrement_smbd_process_count();
 468
 469 #ifdef WITH_DFS
 470         if (dcelogin_atmost_once) {
 471                 dfs_unlogin();
 472         }
 473 #endif
 474
 475         if (!reason) {
 476                 int oldlevel = DEBUGLEVEL;
 477                 DEBUGLEVEL = 10;
 478                 DEBUG(0,("Last message was %s\n",smb_fn_name(last_message)));
 479                 if (last_inbuf)
 480                         show_msg(last_inbuf);
 481                 DEBUGLEVEL = oldlevel;
 482                 DEBUG(0,("===============================================================\n"));
 483 #if DUMP_CORE
 484                 if (dump_core()) return;
 485 #endif
 486         }
 487
 488         locking_end();
 489
 490         DEBUG(3,("Server exit (%s)\n", (reason ? reason : "")));
 491         exit(0);
 492 }
 493
 494 /****************************************************************************
 495   initialise connect, service and file structs
 496 ****************************************************************************/
 497 static void init_structs(void )
 498 {
 499         /*
 500          * Set the machine NETBIOS name if not already
 501          * set from the config file.
 502          */
 503
 504         if (!*global_myname) {
 505                 char *p;
 506                 fstrcpy( global_myname, myhostname() );
 507                 p = strchr_m( global_myname, '.' );
 508                 if (p)
 509                         *p = 0;
 510         }
 511
 512         strupper( global_myname );
 513
 514         conn_init();
 515
 516         file_init();
 517
 518         /* for RPC pipes */
 519         init_rpc_pipe_hnd();
 520
 521         init_dptrs();
 522
 523         secrets_init();
 524 }
 525
 526 /****************************************************************************
 527 usage on the program
 528 ****************************************************************************/
 529 static void usage(char *pname)
 530 {
 531
 532         printf("Usage: %s [-DaoPh?V] [-d debuglevel] [-l log basename] [-p port]\n", pname);
 533         printf("       [-O socket options] [-s services file]\n");
 534         printf("\t-D                    Become a daemon\n");
 535         printf("\t-a                    Append to log file (default)\n");
 536         printf("\t-o                    Overwrite log file, don't append\n");
 537         printf("\t-h                    Print usage\n");
 538         printf("\t-?                    Print usage\n");
 539         printf("\t-V                    Print version\n");
 540         printf("\t-d debuglevel         Set the debuglevel\n");
 541         printf("\t-l log basename.      Basename for log/debug files\n");
 542         printf("\t-p port               Listen on the specified port\n");
 543         printf("\t-O socket options     Socket options\n");
 544         printf("\t-s services file.     Filename of services file\n");
 545         printf("\n");
 546 }
 547
 548
 549 /****************************************************************************
 550   main program
 551 ****************************************************************************/
 552  int main(int argc,char *argv[])
 553 {
 554         extern BOOL append_log;
 555         /* shall I run as a daemon */
 556         BOOL is_daemon = False;
 557         BOOL specified_logfile = False;
 558         int port = SMB_PORT;
 559         int opt;
 560         extern char *optarg;
 561
 562 #ifdef HAVE_SET_AUTH_PARAMETERS
 563         set_auth_parameters(argc,argv);
 564 #endif
 565
 566         /* this is for people who can't start the program correctly */
 567         while (argc > 1 && (*argv[1] != '-')) {
 568                 argv++;
 569                 argc--;
 570         }
 571
 572         while ( EOF != (opt = getopt(argc, argv, "O:l:s:d:Dp:h?Vaof:")) )
 573                 switch (opt)  {
 574                 case 'O':
 575                         pstrcpy(user_socket_options,optarg);
 576                         break;
 577
 578                 case 's':
 579                         pstrcpy(servicesf,optarg);
 580                         break;
 581
 582                 case 'l':
 583                         specified_logfile = True;
 584                         slprintf(debugf, sizeof(debugf)-1, "%s/log.smbd", optarg);
 585                         break;
 586
 587                 case 'a':
 588                         append_log = True;
 589                         break;
 590
 591                 case 'o':
 592                         append_log = False;
 593                         break;
 594
 595                 case 'D':
 596                         is_daemon = True;
 597                         break;
 598
 599                 case 'd':
 600                         if (*optarg == 'A')
 601                                 DEBUGLEVEL = 10000;
 602                         else
 603                                 DEBUGLEVEL = atoi(optarg);
 604                         break;
 605
 606                 case 'p':
 607                         port = atoi(optarg);
 608                         break;
 609
 610                 case 'h':
 611                 case '?':
 612                         usage(argv[0]);
 613                         exit(0);
 614                         break;
 615
 616                 case 'V':
 617                         printf("Version %s\n",VERSION);
 618                         exit(0);
 619                         break;
 620                 default:
 621                         DEBUG(0,("Incorrect program usage - are you sure the command line is correct?\n"));
 622                         usage(argv[0]);
 623                         exit(1);
 624                 }
 625
 626 #ifdef HAVE_SETLUID
 627         /* needed for SecureWare on SCO */
 628         setluid(0);
 629 #endif
 630
 631         sec_init();
 632
 633         append_log = True;
 634
 635         TimeInit();
 636
 637         if(!specified_logfile) {
 638                 slprintf(debugf, sizeof(debugf)-1, "%s/log.smbd", LOGFILEBASE);
 639         }
 640
 641         pstrcpy(remote_machine, "smbd");
 642
 643         setup_logging(argv[0],False);
 644
 645         /* we want to re-seed early to prevent time delays causing
 646            client problems at a later date. (tridge) */
 647         generate_random_buffer(NULL, 0, False);
 648
 649         /* make absolutely sure we run as root - to handle cases where people
 650            are crazy enough to have it setuid */
 651
 652         gain_root_privilege();
 653         gain_root_group_privilege();
 654
 655         fault_setup((void (*)(void *))exit_server);
 656         CatchSignal(SIGTERM , SIGNAL_CAST dflt_sig);
 657
 658         /* we are never interested in SIGPIPE */
 659         BlockSignals(True,SIGPIPE);
 660
 661 #if defined(SIGFPE)
 662         /* we are never interested in SIGFPE */
 663         BlockSignals(True,SIGFPE);
 664 #endif
 665
 666 #if defined(SIGUSR2)
 667         /* We are no longer interested in USR2 */
 668         BlockSignals(True,SIGUSR2);
 669 #endif
 670
 671         /* POSIX demands that signals are inherited. If the invoking process has
 672          * these signals masked, we will have problems, as we won't recieve them. */
 673         BlockSignals(False, SIGHUP);
 674         BlockSignals(False, SIGUSR1);
 675
 676         /* we want total control over the permissions on created files,
 677            so set our umask to 0 */
 678         umask(0);
 679
 680         init_sec_ctx();
 681
 682         reopen_logs();
 683
 684         DEBUG(1,( "smbd version %s started.\n", VERSION));
 685         DEBUGADD(1,( "Copyright Andrew Tridgell 1992-1998\n"));
 686
 687         DEBUG(2,("uid=%d gid=%d euid=%d egid=%d\n",
 688                  (int)getuid(),(int)getgid(),(int)geteuid(),(int)getegid()));
 689
 690         if (sizeof(uint16) < 2 || sizeof(uint32) < 4) {
 691                 DEBUG(0,("ERROR: Samba is not configured correctly for the word size on your machine\n"));
 692                 exit(1);
 693         }
 694
 695         /*
 696          * Do this before reload_services.
 697          */
 698
 699         if (!reload_services(False))
 700                 return(-1);
 701
 702         init_structs();
 703
 704         /* don't call winbind for our domain if we are the DC */
 705         if (lp_domain_logons()) {
 706                 winbind_exclude_domain(lp_workgroup());
 707         }
 708
 709 #ifdef WITH_PROFILE
 710         if (!profile_setup(False)) {
 711                 DEBUG(0,("ERROR: failed to setup profiling\n"));
 712                 return -1;
 713         }
 714 #endif
 715
 716 #ifdef WITH_SSL
 717         {
 718                 extern BOOL sslEnabled;
 719                 sslEnabled = lp_ssl_enabled();
 720                 if(sslEnabled)
 721                         sslutil_init(True);
 722         }
 723 #endif        /* WITH_SSL */
 724
 725         fstrcpy(global_myworkgroup, lp_workgroup());
 726
 727         CatchSignal(SIGHUP,SIGNAL_CAST sig_hup);
 728
 729         DEBUG(3,( "loaded services\n"));
 730
 731         if (!is_daemon && !is_a_socket(0)) {
 732                 DEBUG(0,("standard input is not a socket, assuming -D option\n"));
 733                 is_daemon = True;
 734         }
 735
 736         if (is_daemon) {
 737                 DEBUG( 3, ( "Becoming a daemon.\n" ) );
 738                 become_daemon();
 739         }
 740
 741         if (!directory_exist(lp_lockdir(), NULL)) {
 742                 mkdir(lp_lockdir(), 0755);
 743         }
 744
 745         if (is_daemon) {
 746                 pidfile_create("smbd");
 747         }
 748
 749         if (!message_init()) {
 750                 exit(1);
 751         }
 752
 753         /* Setup the main smbd so that we can get messages. */
 754         if (lp_status(-1)) {
 755                 claim_connection(NULL,"",MAXSTATUS,True);
 756         }
 757
 758         /* Attempt to migrate from an old 2.0.x machine account file. */
 759         if (!migrate_from_old_password_file(global_myworkgroup)) {
 760                 DEBUG(0,("Failed to migrate from old MAC file.\n"));
 761         }
 762
 763         if (!open_sockets(is_daemon,port))
 764                 exit(1);
 765
 766         /*
 767          * everything after this point is run after the fork()
 768          */
 769
 770         if (!locking_init(0)) {
 771                 exit(1);
 772         }
 773
 774         if (!print_backend_init()) {
 775                 exit(1);
 776         }
 777
 778         if (!share_info_db_init()) {
 779                 exit(1);
 780         }
 781
 782         if(!initialize_password_db(False)) {
 783                 exit(1);
 784         }
 785
 786         /* possibly reload the services file. */
 787         reload_services(True);
 788
 789         if (init_group_mapping()==False) {
 790                 printf("Could not open tdb mapping file.\n");
 791                 return 0;
 792         }
 793
 794         if(!pdb_generate_sam_sid()) {
 795                 DEBUG(0,("ERROR: Samba cannot create a SAM SID.\n"));
 796                 exit(1);
 797         }
 798
 799         if (*lp_rootdir()) {
 800                 if (sys_chroot(lp_rootdir()) == 0)
 801                         DEBUG(2,("Changed root to %s\n", lp_rootdir()));
 802         }
 803
 804         /* Setup oplocks */
 805         if (!init_oplocks()) {
 806                 exit(1);
 807         }
 808
 809         /* Setup change notify */
 810         if (!init_change_notify()) {
 811                 exit(1);
 812         }
 813
 814         smbd_process();
 815
 816         exit_server("normal exit");
 817         return(0);
 818 }