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                                 /* ready to listen */
 162                         if (listen(s, 5) == -1) {
 163                                 DEBUG(0,("listen: %s\n",strerror(errno)));
 164                                 close(s);
 165                                 return False;
 166                         }
 167                         FD_SET(s,&listen_set);
 168                 }
 169         } else {
 170                 /* Just bind to 0.0.0.0 - accept connections
 171                    from anywhere. */
 172                 num_interfaces = 1;
 173
 174                 /* open an incoming socket */
 175                 s = open_socket_in(SOCK_STREAM, port, 0,
 176                                    interpret_addr(lp_socket_address()),True);
 177                 if (s == -1)
 178                         return(False);
 179
 180                 /* ready to listen */
 181                 if (listen(s, 5) == -1) {
 182                         DEBUG(0,("open_sockets: listen: %s\n",
 183                                  strerror(errno)));
 184                         close(s);
 185                         return False;
 186                 }
 187
 188                 fd_listenset[0] = s;
 189                 FD_SET(s,&listen_set);
 190         }
 191
 192         /* now accept incoming connections - forking a new process
 193            for each incoming connection */
 194         DEBUG(2,("waiting for a connection\n"));
 195         while (1) {
 196                 fd_set lfds;
 197                 int num;
 198
 199                 /* Free up temporary memory from the main smbd. */
 200                 lp_talloc_free();
 201
 202                 /* Ensure we respond to PING and DEBUG messages from the main smbd. */
 203                 message_dispatch();
 204
 205                 memcpy((char *)&lfds, (char *)&listen_set,
 206                        sizeof(listen_set));
 207
 208                 num = sys_select(FD_SETSIZE,&lfds,NULL);
 209
 210                 if (num == -1 && errno == EINTR) {
 211                         extern VOLATILE SIG_ATOMIC_T reload_after_sighup;
 212
 213                         /* check for sighup processing */
 214                         if (reload_after_sighup) {
 215                                 unbecome_user();
 216                                 DEBUG(1,("Reloading services after SIGHUP\n"));
 217                                 reload_services(False);
 218                                 reload_after_sighup = False;
 219                         }
 220
 221                         continue;
 222                 }
 223
 224                 /* check if we need to reload services */
 225                 check_reload(time(NULL));
 226
 227                 /* Find the sockets that are read-ready -
 228                    accept on these. */
 229                 for( ; num > 0; num--) {
 230                         struct sockaddr addr;
 231                         int in_addrlen = sizeof(addr);
 232
 233                         s = -1;
 234                         for(i = 0; i < num_interfaces; i++) {
 235                                 if(FD_ISSET(fd_listenset[i],&lfds)) {
 236                                         s = fd_listenset[i];
 237                                         /* Clear this so we don't look
 238                                            at it again. */
 239                                         FD_CLR(fd_listenset[i],&lfds);
 240                                         break;
 241                                 }
 242                         }
 243
 244                         smbd_set_server_fd(accept(s,&addr,&in_addrlen));
 245
 246                         if (smbd_server_fd() == -1 && errno == EINTR)
 247                                 continue;
 248
 249                         if (smbd_server_fd() == -1) {
 250                                 DEBUG(0,("open_sockets: accept: %s\n",
 251                                          strerror(errno)));
 252                                 continue;
 253                         }
 254
 255                         if (smbd_server_fd() != -1 && sys_fork()==0) {
 256                                 /* Child code ... */
 257
 258                                 /* close the listening socket(s) */
 259                                 for(i = 0; i < num_interfaces; i++)
 260                                         close(fd_listenset[i]);
 261
 262                                 /* close our standard file
 263                                    descriptors */
 264                                 close_low_fds();
 265                                 am_parent = 0;
 266
 267                                 set_socket_options(smbd_server_fd(),"SO_KEEPALIVE");
 268                                 set_socket_options(smbd_server_fd(),user_socket_options);
 269
 270                                 /* Reset global variables in util.c so
 271                                    that client substitutions will be
 272                                    done correctly in the process.  */
 273                                 reset_globals_after_fork();
 274
 275                                 return True;
 276                         }
 277                         /* The parent doesn't need this socket */
 278                         close(smbd_server_fd());
 279
 280                         /* Sun May 6 18:56:14 2001 ackley@cs.unm.edu:
 281                                 Clear the closed fd info out of server_fd --
 282                                 and more importantly, out of client_fd in
 283                                 util_sock.c, to avoid a possible
 284                                 getpeername failure if we reopen the logs
 285                                 and use %I in the filename.
 286                         */
 287
 288                         smbd_set_server_fd(-1);
 289
 290                         /* Force parent to check log size after
 291                          * spawning child.  Fix from
 292                          * klausr@ITAP.Physik.Uni-Stuttgart.De.  The
 293                          * parent smbd will log to logserver.smb.  It
 294                          * writes only two messages for each child
 295                          * started/finished. But each child writes,
 296                          * say, 50 messages also in logserver.smb,
 297                          * begining with the debug_count of the
 298                          * parent, before the child opens its own log
 299                          * file logserver.client. In a worst case
 300                          * scenario the size of logserver.smb would be
 301                          * checked after about 50*50=2500 messages
 302                          * (ca. 100kb).
 303                          * */
 304                         force_check_log_size();
 305
 306                 } /* end for num */
 307         } /* end while 1 */
 308
 309 /* NOTREACHED   return True; */
 310 }
 311
 312 /****************************************************************************
 313   reload the services file
 314   **************************************************************************/
 315 BOOL reload_services(BOOL test)
 316 {
 317         BOOL ret;
 318
 319         if (lp_loaded()) {
 320                 pstring fname;
 321                 pstrcpy(fname,lp_configfile());
 322                 if (file_exist(fname,NULL) && !strcsequal(fname,servicesf)) {
 323                         pstrcpy(servicesf,fname);
 324                         test = False;
 325                 }
 326         }
 327
 328         reopen_logs();
 329
 330         if (test && !lp_file_list_changed())
 331                 return(True);
 332
 333         lp_killunused(conn_snum_used);
 334
 335         ret = lp_load(servicesf,False,False,True);
 336
 337         load_printers();
 338
 339         /* perhaps the config filename is now set */
 340         if (!test)
 341                 reload_services(True);
 342
 343         reopen_logs();
 344
 345         load_interfaces();
 346
 347         {
 348                 if (smbd_server_fd() != -1) {
 349                         set_socket_options(smbd_server_fd(),"SO_KEEPALIVE");
 350                         set_socket_options(smbd_server_fd(),user_socket_options);
 351                 }
 352         }
 353
 354         reset_mangled_cache();
 355         reset_stat_cache();
 356
 357         /* this forces service parameters to be flushed */
 358         become_service(NULL,True);
 359
 360         return(ret);
 361 }
 362
 363
 364
 365 /****************************************************************************
 366  Catch a sighup.
 367 ****************************************************************************/
 368
 369 VOLATILE SIG_ATOMIC_T reload_after_sighup = False;
 370
 371 static void sig_hup(int sig)
 372 {
 373         BlockSignals(True,SIGHUP);
 374         DEBUG(0,("Got SIGHUP\n"));
 375
 376         sys_select_signal();
 377         reload_after_sighup = True;
 378         BlockSignals(False,SIGHUP);
 379 }
 380
 381
 382
 383 #if DUMP_CORE
 384 /*******************************************************************
 385 prepare to dump a core file - carefully!
 386 ********************************************************************/
 387 static BOOL dump_core(void)
 388 {
 389         char *p;
 390         pstring dname;
 391         pstrcpy(dname,debugf);
 392         if ((p=strrchr(dname,'/'))) *p=0;
 393         pstrcat(dname,"/corefiles");
 394         mkdir(dname,0700);
 395         sys_chown(dname,getuid(),getgid());
 396         chmod(dname,0700);
 397         if (chdir(dname)) return(False);
 398         umask(~(0700));
 399
 400 #ifdef HAVE_GETRLIMIT
 401 #ifdef RLIMIT_CORE
 402         {
 403                 struct rlimit rlp;
 404                 getrlimit(RLIMIT_CORE, &rlp);
 405                 rlp.rlim_cur = MAX(4*1024*1024,rlp.rlim_cur);
 406                 setrlimit(RLIMIT_CORE, &rlp);
 407                 getrlimit(RLIMIT_CORE, &rlp);
 408                 DEBUG(3,("Core limits now %d %d\n",
 409                          (int)rlp.rlim_cur,(int)rlp.rlim_max));
 410         }
 411 #endif
 412 #endif
 413
 414
 415         DEBUG(0,("Dumping core in %s\n",dname));
 416         abort();
 417         return(True);
 418 }
 419 #endif
 420
 421 /****************************************************************************
 422 update the current smbd process count
 423 ****************************************************************************/
 424
 425 static void decrement_smbd_process_count(void)
 426 {
 427         int total_smbds;
 428
 429         if (lp_max_smbd_processes()) {
 430                 total_smbds = 0;
 431                 tdb_change_int_atomic(conn_tdb_ctx(), "INFO/total_smbds", &total_smbds, -1);
 432         }
 433 }
 434
 435 /****************************************************************************
 436 exit the server
 437 ****************************************************************************/
 438 void exit_server(char *reason)
 439 {
 440         static int firsttime=1;
 441         extern char *last_inbuf;
 442
 443
 444         if (!firsttime) exit(0);
 445         firsttime = 0;
 446
 447         unbecome_user();
 448         DEBUG(2,("Closing connections\n"));
 449
 450         conn_close_all();
 451
 452         invalidate_all_vuids();
 453
 454         /* delete our entry in the connections database. */
 455         if (lp_status(-1)) {
 456                 yield_connection(NULL,"",MAXSTATUS);
 457         }
 458
 459         respond_to_all_remaining_local_messages();
 460         decrement_smbd_process_count();
 461
 462 #ifdef WITH_DFS
 463         if (dcelogin_atmost_once) {
 464                 dfs_unlogin();
 465         }
 466 #endif
 467
 468         if (!reason) {
 469                 int oldlevel = DEBUGLEVEL;
 470                 DEBUGLEVEL = 10;
 471                 DEBUG(0,("Last message was %s\n",smb_fn_name(last_message)));
 472                 if (last_inbuf)
 473                         show_msg(last_inbuf);
 474                 DEBUGLEVEL = oldlevel;
 475                 DEBUG(0,("===============================================================\n"));
 476 #if DUMP_CORE
 477                 if (dump_core()) return;
 478 #endif
 479         }
 480
 481         locking_end();
 482
 483         DEBUG(3,("Server exit (%s)\n", (reason ? reason : "")));
 484         exit(0);
 485 }
 486
 487 /****************************************************************************
 488   initialise connect, service and file structs
 489 ****************************************************************************/
 490 static void init_structs(void )
 491 {
 492         /*
 493          * Set the machine NETBIOS name if not already
 494          * set from the config file.
 495          */
 496
 497         if (!*global_myname) {
 498                 char *p;
 499                 fstrcpy( global_myname, myhostname() );
 500                 p = strchr( global_myname, '.' );
 501                 if (p)
 502                         *p = 0;
 503         }
 504
 505         strupper( global_myname );
 506
 507         conn_init();
 508
 509         file_init();
 510
 511         /* for RPC pipes */
 512         init_rpc_pipe_hnd();
 513
 514         init_dptrs();
 515
 516         secrets_init();
 517 }
 518
 519 /****************************************************************************
 520 usage on the program
 521 ****************************************************************************/
 522 static void usage(char *pname)
 523 {
 524
 525         printf("Usage: %s [-DaoPh?V] [-d debuglevel] [-l log basename] [-p port]\n", pname);
 526         printf("       [-O socket options] [-s services file]\n");
 527         printf("\t-D                    Become a daemon\n");
 528         printf("\t-a                    Append to log file (default)\n");
 529         printf("\t-o                    Overwrite log file, don't append\n");
 530         printf("\t-h                    Print usage\n");
 531         printf("\t-?                    Print usage\n");
 532         printf("\t-V                    Print version\n");
 533         printf("\t-d debuglevel         Set the debuglevel\n");
 534         printf("\t-l log basename.      Basename for log/debug files\n");
 535         printf("\t-p port               Listen on the specified port\n");
 536         printf("\t-O socket options     Socket options\n");
 537         printf("\t-s services file.     Filename of services file\n");
 538         printf("\n");
 539 }
 540
 541
 542 /****************************************************************************
 543   main program
 544 ****************************************************************************/
 545  int main(int argc,char *argv[])
 546 {
 547         extern BOOL append_log;
 548         /* shall I run as a daemon */
 549         BOOL is_daemon = False;
 550         BOOL specified_logfile = False;
 551         int port = SMB_PORT;
 552         int opt;
 553         extern char *optarg;
 554
 555 #ifdef HAVE_SET_AUTH_PARAMETERS
 556         set_auth_parameters(argc,argv);
 557 #endif
 558
 559         /* this is for people who can't start the program correctly */
 560         while (argc > 1 && (*argv[1] != '-')) {
 561                 argv++;
 562                 argc--;
 563         }
 564
 565         while ( EOF != (opt = getopt(argc, argv, "O:l:s:d:Dp:h?Vaof:")) )
 566                 switch (opt)  {
 567                 case 'O':
 568                         pstrcpy(user_socket_options,optarg);
 569                         break;
 570
 571                 case 's':
 572                         pstrcpy(servicesf,optarg);
 573                         break;
 574
 575                 case 'l':
 576                         specified_logfile = True;
 577                         pstrcpy(debugf,optarg);
 578                         break;
 579
 580                 case 'a':
 581                         append_log = True;
 582                         break;
 583
 584                 case 'o':
 585                         append_log = False;
 586                         break;
 587
 588                 case 'D':
 589                         is_daemon = True;
 590                         break;
 591
 592                 case 'd':
 593                         if (*optarg == 'A')
 594                                 DEBUGLEVEL = 10000;
 595                         else
 596                                 DEBUGLEVEL = atoi(optarg);
 597                         break;
 598
 599                 case 'p':
 600                         port = atoi(optarg);
 601                         break;
 602
 603                 case 'h':
 604                 case '?':
 605                         usage(argv[0]);
 606                         exit(0);
 607                         break;
 608
 609                 case 'V':
 610                         printf("Version %s\n",VERSION);
 611                         exit(0);
 612                         break;
 613                 default:
 614                         DEBUG(0,("Incorrect program usage - are you sure the command line is correct?\n"));
 615                         usage(argv[0]);
 616                         exit(1);
 617                 }
 618
 619 #ifdef HAVE_SETLUID
 620         /* needed for SecureWare on SCO */
 621         setluid(0);
 622 #endif
 623
 624         /*
 625          * gain_root_privilege uses an assert than will cause a core
 626          * dump if euid != 0. Ensure this is the case.
 627          */
 628
 629         if(geteuid() != (uid_t)0) {
 630                 fprintf(stderr, "%s: Version %s : Must have effective user id of zero to run.\n", argv[0], VERSION);
 631                 exit(1);
 632         }
 633
 634         append_log = True;
 635
 636         TimeInit();
 637
 638         if(!specified_logfile) {
 639                 slprintf(debugf, sizeof(debugf)-1, "%s/log.smbd", LOGFILEBASE);
 640         }
 641
 642         pstrcpy(remote_machine, "smbd");
 643
 644         setup_logging(argv[0],False);
 645
 646         charset_initialise();
 647
 648         /* we want to re-seed early to prevent time delays causing
 649            client problems at a later date. (tridge) */
 650         generate_random_buffer(NULL, 0, False);
 651
 652         /* make absolutely sure we run as root - to handle cases where people
 653            are crazy enough to have it setuid */
 654
 655         gain_root_privilege();
 656         gain_root_group_privilege();
 657
 658         fault_setup((void (*)(void *))exit_server);
 659         CatchSignal(SIGTERM , SIGNAL_CAST dflt_sig);
 660
 661         /* we are never interested in SIGPIPE */
 662         BlockSignals(True,SIGPIPE);
 663
 664 #if defined(SIGFPE)
 665         /* we are never interested in SIGFPE */
 666         BlockSignals(True,SIGFPE);
 667 #endif
 668
 669 #if defined(SIGUSR2)
 670         /* We are no longer interested in USR2 */
 671         BlockSignals(True,SIGUSR2);
 672 #endif
 673
 674         /* POSIX demands that signals are inherited. If the invoking process has
 675          * these signals masked, we will have problems, as we won't recieve them. */
 676         BlockSignals(False, SIGHUP);
 677         BlockSignals(False, SIGUSR1);
 678
 679         /* we want total control over the permissions on created files,
 680            so set our umask to 0 */
 681         umask(0);
 682
 683         init_sec_ctx();
 684
 685         reopen_logs();
 686
 687         DEBUG(1,( "smbd version %s started.\n", VERSION));
 688         DEBUGADD(1,( "Copyright Andrew Tridgell 1992-1998\n"));
 689
 690         DEBUG(2,("uid=%d gid=%d euid=%d egid=%d\n",
 691                  (int)getuid(),(int)getgid(),(int)geteuid(),(int)getegid()));
 692
 693         if (sizeof(uint16) < 2 || sizeof(uint32) < 4) {
 694                 DEBUG(0,("ERROR: Samba is not configured correctly for the word size on your machine\n"));
 695                 exit(1);
 696         }
 697
 698         /*
 699          * Do this before reload_services.
 700          */
 701
 702         if (!reload_services(False))
 703                 return(-1);
 704
 705         init_structs();
 706
 707 #ifdef WITH_PROFILE
 708         if (!profile_setup(False)) {
 709                 DEBUG(0,("ERROR: failed to setup profiling\n"));
 710                 return -1;
 711         }
 712 #endif
 713
 714 #ifdef WITH_SSL
 715         {
 716                 extern BOOL sslEnabled;
 717                 sslEnabled = lp_ssl_enabled();
 718                 if(sslEnabled)
 719                         sslutil_init(True);
 720         }
 721 #endif        /* WITH_SSL */
 722
 723         codepage_initialise(lp_client_code_page());
 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 }