source/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 extern pstring debugf;
  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
  38 #ifdef WITH_DFS
  39 extern int dcelogin_atmost_once;
  40 #endif /* WITH_DFS */
  41
  42 extern fstring remote_machine;
  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 void smbd_set_server_fd(int fd)
  58 {
  59         server_fd = fd;
  60         client_setfd(fd);
  61 }
  62
  63 /****************************************************************************
  64   when exiting, take the whole family
  65 ****************************************************************************/
  66 static void *dflt_sig(void)
  67 {
  68         exit_server("caught signal");
  69         return NULL;
  70 }
  71
  72 /****************************************************************************
  73   Send a SIGTERM to our process group.
  74 *****************************************************************************/
  75 static void  killkids(void)
  76 {
  77         if(am_parent) kill(0,SIGTERM);
  78 }
  79
  80 /****************************************************************************
  81   process a sam sync message - not sure whether to do this here or
  82   somewhere else
  83 ****************************************************************************/
  84 static void msg_sam_sync(int msg_type, pid_t pid, void *buf, size_t len)
  85 {
  86         DEBUG(10, ("** sam sync message received, ignoring\n"));
  87 }
  88
  89 /****************************************************************************
  90   process a sam sync replicate message - not sure whether to do this here or
  91   somewhere else
  92 ****************************************************************************/
  93 static void msg_sam_repl(int msg_type, pid_t pid, void *buf, size_t len)
  94 {
  95         uint32 low_serial;
  96
  97         if (len != sizeof(uint32))
  98                 return;
  99
 100         low_serial = *((uint32 *)buf);
 101
 102         DEBUG(3, ("received sam replication message, serial = 0x%04x\n",
 103                   low_serial));
 104 }
 105
 106 /****************************************************************************
 107   open the socket communication
 108 ****************************************************************************/
 109 static BOOL open_sockets_inetd(void)
 110 {
 111         /* Started from inetd. fd 0 is the socket. */
 112         /* We will abort gracefully when the client or remote system
 113            goes away */
 114         smbd_set_server_fd(dup(0));
 115
 116         /* close our standard file descriptors */
 117         close_low_fds();
 118
 119         set_socket_options(smbd_server_fd(),"SO_KEEPALIVE");
 120         set_socket_options(smbd_server_fd(),user_socket_options);
 121
 122         return True;
 123 }
 124
 125
 126 /****************************************************************************
 127   open the socket communication
 128 ****************************************************************************/
 129 static BOOL open_sockets(BOOL is_daemon,int port)
 130 {
 131         int num_interfaces = iface_count();
 132         int fd_listenset[FD_SETSIZE];
 133         fd_set listen_set;
 134         int s;
 135         int i;
 136
 137         if (!is_daemon) {
 138                 return open_sockets_inetd();
 139         }
 140
 141
 142 #ifdef HAVE_ATEXIT
 143         {
 144                 static int atexit_set;
 145                 if(atexit_set == 0) {
 146                         atexit_set=1;
 147                         atexit(killkids);
 148                 }
 149         }
 150 #endif
 151
 152         /* Stop zombies */
 153         CatchChild();
 154
 155
 156         FD_ZERO(&listen_set);
 157
 158         if(lp_interfaces() && lp_bind_interfaces_only()) {
 159                 /* We have been given an interfaces line, and been
 160                    told to only bind to those interfaces. Create a
 161                    socket per interface and bind to only these.
 162                 */
 163
 164                 if(num_interfaces > FD_SETSIZE) {
 165                         DEBUG(0,("open_sockets: Too many interfaces specified to bind to. Number was %d \
 166 max can be %d\n",
 167                                  num_interfaces, FD_SETSIZE));
 168                         return False;
 169                 }
 170
 171                 /* Now open a listen socket for each of the
 172                    interfaces. */
 173                 for(i = 0; i < num_interfaces; i++) {
 174                         struct in_addr *ifip = iface_n_ip(i);
 175
 176                         if(ifip == NULL) {
 177                                 DEBUG(0,("open_sockets: interface %d has NULL IP address !\n", i));
 178                                 continue;
 179                         }
 180                         s = fd_listenset[i] = open_socket_in(SOCK_STREAM, port, 0, ifip->s_addr, 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,("listen: %s\n",strerror(errno)));
 190                                 close(s);
 191                                 return False;
 192                         }
 193                         FD_SET(s,&listen_set);
 194                 }
 195         } else {
 196                 /* Just bind to 0.0.0.0 - accept connections
 197                    from anywhere. */
 198                 num_interfaces = 1;
 199
 200                 /* open an incoming socket */
 201                 s = open_socket_in(SOCK_STREAM, port, 0,
 202                                    interpret_addr(lp_socket_address()),True);
 203                 if (s == -1)
 204                         return(False);
 205
 206                 /* ready to listen */
 207                 set_socket_options(s,"SO_KEEPALIVE");
 208                 set_socket_options(s,user_socket_options);
 209
 210                 if (listen(s, 5) == -1) {
 211                         DEBUG(0,("open_sockets: listen: %s\n",
 212                                  strerror(errno)));
 213                         close(s);
 214                         return False;
 215                 }
 216
 217                 fd_listenset[0] = s;
 218                 FD_SET(s,&listen_set);
 219         }
 220
 221         /* Listen to messages */
 222
 223         message_register(MSG_SMB_SAM_SYNC, msg_sam_sync);
 224         message_register(MSG_SMB_SAM_REPL, msg_sam_repl);
 225
 226         /* now accept incoming connections - forking a new process
 227            for each incoming connection */
 228         DEBUG(2,("waiting for a connection\n"));
 229         while (1) {
 230                 fd_set lfds;
 231                 int num;
 232
 233                 /* Free up temporary memory from the main smbd. */
 234                 lp_talloc_free();
 235
 236                 /* Ensure we respond to PING and DEBUG messages from the main smbd. */
 237                 message_dispatch();
 238
 239                 memcpy((char *)&lfds, (char *)&listen_set,
 240                        sizeof(listen_set));
 241
 242                 num = sys_select(FD_SETSIZE,&lfds,NULL);
 243
 244                 if (num == -1 && errno == EINTR) {
 245                         extern VOLATILE sig_atomic_t reload_after_sighup;
 246
 247                         /* check for sighup processing */
 248                         if (reload_after_sighup) {
 249                                 change_to_root_user();
 250                                 DEBUG(1,("Reloading services after SIGHUP\n"));
 251                                 reload_services(False);
 252                                 reload_after_sighup = False;
 253                         }
 254
 255                         continue;
 256                 }
 257
 258                 /* check if we need to reload services */
 259                 check_reload(time(NULL));
 260
 261                 /* Find the sockets that are read-ready -
 262                    accept on these. */
 263                 for( ; num > 0; num--) {
 264                         struct sockaddr addr;
 265                         socklen_t in_addrlen = sizeof(addr);
 266
 267                         s = -1;
 268                         for(i = 0; i < num_interfaces; i++) {
 269                                 if(FD_ISSET(fd_listenset[i],&lfds)) {
 270                                         s = fd_listenset[i];
 271                                         /* Clear this so we don't look
 272                                            at it again. */
 273                                         FD_CLR(fd_listenset[i],&lfds);
 274                                         break;
 275                                 }
 276                         }
 277
 278                         smbd_set_server_fd(accept(s,&addr,&in_addrlen));
 279
 280                         if (smbd_server_fd() == -1 && errno == EINTR)
 281                                 continue;
 282
 283                         if (smbd_server_fd() == -1) {
 284                                 DEBUG(0,("open_sockets: accept: %s\n",
 285                                          strerror(errno)));
 286                                 continue;
 287                         }
 288
 289                         if (smbd_server_fd() != -1 && sys_fork()==0) {
 290                                 /* Child code ... */
 291
 292                                 /* close the listening socket(s) */
 293                                 for(i = 0; i < num_interfaces; i++)
 294                                         close(fd_listenset[i]);
 295
 296                                 /* close our standard file
 297                                    descriptors */
 298                                 close_low_fds();
 299                                 am_parent = 0;
 300
 301                                 set_socket_options(smbd_server_fd(),"SO_KEEPALIVE");
 302                                 set_socket_options(smbd_server_fd(),user_socket_options);
 303
 304                                 /* Reset global variables in util.c so
 305                                    that client substitutions will be
 306                                    done correctly in the process.  */
 307                                 reset_globals_after_fork();
 308
 309                                 /* tdb needs special fork handling */
 310                                 tdb_reopen_all();
 311
 312                                 return True;
 313                         }
 314                         /* The parent doesn't need this socket */
 315                         close(smbd_server_fd());
 316
 317                         /* Sun May 6 18:56:14 2001 ackley@cs.unm.edu:
 318                                 Clear the closed fd info out of server_fd --
 319                                 and more importantly, out of client_fd in
 320                                 util_sock.c, to avoid a possible
 321                                 getpeername failure if we reopen the logs
 322                                 and use %I in the filename.
 323                         */
 324
 325                         smbd_set_server_fd(-1);
 326
 327                         /* Force parent to check log size after
 328                          * spawning child.  Fix from
 329                          * klausr@ITAP.Physik.Uni-Stuttgart.De.  The
 330                          * parent smbd will log to logserver.smb.  It
 331                          * writes only two messages for each child
 332                          * started/finished. But each child writes,
 333                          * say, 50 messages also in logserver.smb,
 334                          * begining with the debug_count of the
 335                          * parent, before the child opens its own log
 336                          * file logserver.client. In a worst case
 337                          * scenario the size of logserver.smb would be
 338                          * checked after about 50*50=2500 messages
 339                          * (ca. 100kb).
 340                          * */
 341                         force_check_log_size();
 342
 343                 } /* end for num */
 344         } /* end while 1 */
 345
 346 /* NOTREACHED   return True; */
 347 }
 348
 349 /****************************************************************************
 350   reload the services file
 351   **************************************************************************/
 352 BOOL reload_services(BOOL test)
 353 {
 354         BOOL ret;
 355
 356         if (lp_loaded()) {
 357                 pstring fname;
 358                 pstrcpy(fname,lp_configfile());
 359                 if (file_exist(fname,NULL) && !strcsequal(fname,dyn_CONFIGFILE)) {
 360                         pstrcpy(dyn_CONFIGFILE,fname);
 361                         test = False;
 362                 }
 363         }
 364
 365         reopen_logs();
 366
 367         if (test && !lp_file_list_changed())
 368                 return(True);
 369
 370         lp_killunused(conn_snum_used);
 371
 372         ret = lp_load(dyn_CONFIGFILE,False,False,True);
 373
 374         load_printers();
 375
 376         /* perhaps the config filename is now set */
 377         if (!test)
 378                 reload_services(True);
 379
 380         reopen_logs();
 381
 382         load_interfaces();
 383
 384         {
 385                 if (smbd_server_fd() != -1) {
 386                         set_socket_options(smbd_server_fd(),"SO_KEEPALIVE");
 387                         set_socket_options(smbd_server_fd(),user_socket_options);
 388                 }
 389         }
 390
 391         reset_mangled_cache();
 392         reset_stat_cache();
 393
 394         /* this forces service parameters to be flushed */
 395         set_current_service(NULL,True);
 396
 397         return(ret);
 398 }
 399
 400
 401
 402 /****************************************************************************
 403  Catch a sighup.
 404 ****************************************************************************/
 405
 406 VOLATILE sig_atomic_t reload_after_sighup = False;
 407
 408 static void sig_hup(int sig)
 409 {
 410         BlockSignals(True,SIGHUP);
 411         DEBUG(0,("Got SIGHUP\n"));
 412
 413         sys_select_signal();
 414         reload_after_sighup = True;
 415         BlockSignals(False,SIGHUP);
 416 }
 417
 418
 419
 420 #if DUMP_CORE
 421 /*******************************************************************
 422 prepare to dump a core file - carefully!
 423 ********************************************************************/
 424 static BOOL dump_core(void)
 425 {
 426         char *p;
 427         pstring dname;
 428         pstrcpy(dname,debugf);
 429         if ((p=strrchr_m(dname,'/'))) *p=0;
 430         pstrcat(dname,"/corefiles");
 431         mkdir(dname,0700);
 432         sys_chown(dname,getuid(),getgid());
 433         chmod(dname,0700);
 434         if (chdir(dname)) return(False);
 435         umask(~(0700));
 436
 437 #ifdef HAVE_GETRLIMIT
 438 #ifdef RLIMIT_CORE
 439         {
 440                 struct rlimit rlp;
 441                 getrlimit(RLIMIT_CORE, &rlp);
 442                 rlp.rlim_cur = MAX(4*1024*1024,rlp.rlim_cur);
 443                 setrlimit(RLIMIT_CORE, &rlp);
 444                 getrlimit(RLIMIT_CORE, &rlp);
 445                 DEBUG(3,("Core limits now %d %d\n",
 446                          (int)rlp.rlim_cur,(int)rlp.rlim_max));
 447         }
 448 #endif
 449 #endif
 450
 451
 452         DEBUG(0,("Dumping core in %s\n",dname));
 453         abort();
 454         return(True);
 455 }
 456 #endif
 457
 458 /****************************************************************************
 459 update the current smbd process count
 460 ****************************************************************************/
 461
 462 static void decrement_smbd_process_count(void)
 463 {
 464         int total_smbds;
 465
 466         if (lp_max_smbd_processes()) {
 467                 total_smbds = 0;
 468                 tdb_change_int_atomic(conn_tdb_ctx(), "INFO/total_smbds", &total_smbds, -1);
 469         }
 470 }
 471
 472 /****************************************************************************
 473 exit the server
 474 ****************************************************************************/
 475 void exit_server(char *reason)
 476 {
 477         static int firsttime=1;
 478         extern char *last_inbuf;
 479
 480
 481         if (!firsttime)
 482                 exit(0);
 483         firsttime = 0;
 484
 485         change_to_root_user();
 486         DEBUG(2,("Closing connections\n"));
 487
 488         conn_close_all();
 489
 490         invalidate_all_vuids();
 491
 492         /* delete our entry in the connections database. */
 493         yield_connection(NULL,"",MAXSTATUS);
 494
 495         respond_to_all_remaining_local_messages();
 496         decrement_smbd_process_count();
 497
 498 #ifdef WITH_DFS
 499         if (dcelogin_atmost_once) {
 500                 dfs_unlogin();
 501         }
 502 #endif
 503
 504         if (!reason) {
 505                 int oldlevel = DEBUGLEVEL;
 506                 DEBUGLEVEL = 10;
 507                 DEBUG(0,("Last message was %s\n",smb_fn_name(last_message)));
 508                 if (last_inbuf)
 509                         show_msg(last_inbuf);
 510                 DEBUGLEVEL = oldlevel;
 511                 DEBUG(0,("===============================================================\n"));
 512 #if DUMP_CORE
 513                 if (dump_core()) return;
 514 #endif
 515         }
 516
 517         locking_end();
 518
 519         DEBUG(3,("Server exit (%s)\n", (reason ? reason : "")));
 520         exit(0);
 521 }
 522
 523 /****************************************************************************
 524   initialise connect, service and file structs
 525 ****************************************************************************/
 526 static void init_structs(void )
 527 {
 528         /*
 529          * Set the machine NETBIOS name if not already
 530          * set from the config file.
 531          */
 532
 533         if (!*global_myname) {
 534                 char *p;
 535                 fstrcpy( global_myname, myhostname() );
 536                 p = strchr_m( global_myname, '.' );
 537                 if (p)
 538                         *p = 0;
 539         }
 540
 541         strupper( global_myname );
 542
 543         conn_init();
 544
 545         file_init();
 546
 547         /* for RPC pipes */
 548         init_rpc_pipe_hnd();
 549
 550         init_dptrs();
 551
 552         secrets_init();
 553 }
 554
 555 /****************************************************************************
 556 usage on the program
 557 ****************************************************************************/
 558 static void usage(char *pname)
 559 {
 560
 561         d_printf("Usage: %s [-DaoPh?Vb] [-d debuglevel] [-l log basename] [-p port]\n", pname);
 562         d_printf("       [-O socket options] [-s services file]\n");
 563         d_printf("\t-D                    Become a daemon\n");
 564         d_printf("\t-a                    Append to log file (default)\n");
 565         d_printf("\t-o                    Overwrite log file, don't append\n");
 566         d_printf("\t-h                    Print usage\n");
 567         d_printf("\t-?                    Print usage\n");
 568         d_printf("\t-V                    Print version\n");
 569         d_printf("\t-b                    Print build options\n");
 570         d_printf("\t-d debuglevel         Set the debuglevel\n");
 571         d_printf("\t-l log basename.      Basename for log/debug files\n");
 572         d_printf("\t-p port               Listen on the specified port\n");
 573         d_printf("\t-O socket options     Socket options\n");
 574         d_printf("\t-s services file.     Filename of services file\n");
 575         d_printf("\n");
 576 }
 577
 578 /****************************************************************************
 579   main program
 580 ****************************************************************************/
 581  int main(int argc,char *argv[])
 582 {
 583         extern BOOL append_log;
 584         /* shall I run as a daemon */
 585         BOOL is_daemon = False;
 586         BOOL specified_logfile = False;
 587         int port = SMB_PORT;
 588         int opt;
 589         extern char *optarg;
 590
 591 #ifdef HAVE_SET_AUTH_PARAMETERS
 592         set_auth_parameters(argc,argv);
 593 #endif
 594
 595         /* this is for people who can't start the program correctly */
 596         while (argc > 1 && (*argv[1] != '-')) {
 597                 argv++;
 598                 argc--;
 599         }
 600
 601         while ( EOF != (opt = getopt(argc, argv, "O:l:s:d:Dp:h?bVaof:")) )
 602                 switch (opt)  {
 603                 case 'O':
 604                         pstrcpy(user_socket_options,optarg);
 605                         break;
 606
 607                 case 's':
 608                         pstrcpy(dyn_CONFIGFILE,optarg);
 609                         break;
 610
 611                 case 'l':
 612                         specified_logfile = True;
 613                         slprintf(debugf, sizeof(debugf)-1, "%s/log.smbd", optarg);
 614                         break;
 615
 616                 case 'a':
 617                         append_log = True;
 618                         break;
 619
 620                 case 'o':
 621                         append_log = False;
 622                         break;
 623
 624                 case 'D':
 625                         is_daemon = True;
 626                         break;
 627
 628                 case 'd':
 629                         if (*optarg == 'A')
 630                                 DEBUGLEVEL = 10000;
 631                         else
 632                                 DEBUGLEVEL = atoi(optarg);
 633                         break;
 634
 635                 case 'p':
 636                         port = atoi(optarg);
 637                         break;
 638
 639                 case 'h':
 640                 case '?':
 641                         usage(argv[0]);
 642                         exit(0);
 643                         break;
 644
 645                 case 'V':
 646                         d_printf("Version %s\n",VERSION);
 647                         exit(0);
 648                         break;
 649                 case 'b':
 650                         build_options(True); /* Display output to screen as well as debug */
 651                         exit(0);
 652                         break;
 653                 default:
 654                         DEBUG(0,("Incorrect program usage - are you sure the command line is correct?\n"));
 655                         usage(argv[0]);
 656                         exit(1);
 657                 }
 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         append_log = True;
 669
 670         TimeInit();
 671
 672         if(!specified_logfile) {
 673                 slprintf(debugf, sizeof(debugf)-1, "%s/log.smbd",
 674                          dyn_LOGFILEBASE);
 675         }
 676
 677         pstrcpy(remote_machine, "smbd");
 678
 679         setup_logging(argv[0],False);
 680
 681         /* we want to re-seed early to prevent time delays causing
 682            client problems at a later date. (tridge) */
 683         generate_random_buffer(NULL, 0, False);
 684
 685         /* make absolutely sure we run as root - to handle cases where people
 686            are crazy enough to have it setuid */
 687
 688         gain_root_privilege();
 689         gain_root_group_privilege();
 690
 691         fault_setup((void (*)(void *))exit_server);
 692         CatchSignal(SIGTERM , SIGNAL_CAST dflt_sig);
 693
 694         /* we are never interested in SIGPIPE */
 695         BlockSignals(True,SIGPIPE);
 696
 697 #if defined(SIGFPE)
 698         /* we are never interested in SIGFPE */
 699         BlockSignals(True,SIGFPE);
 700 #endif
 701
 702 #if defined(SIGUSR2)
 703         /* We are no longer interested in USR2 */
 704         BlockSignals(True,SIGUSR2);
 705 #endif
 706
 707         /* POSIX demands that signals are inherited. If the invoking process has
 708          * these signals masked, we will have problems, as we won't recieve them. */
 709         BlockSignals(False, SIGHUP);
 710         BlockSignals(False, SIGUSR1);
 711
 712         /* we want total control over the permissions on created files,
 713            so set our umask to 0 */
 714         umask(0);
 715
 716         init_sec_ctx();
 717
 718         reopen_logs();
 719
 720         DEBUG(1,( "smbd version %s started.\n", VERSION));
 721         DEBUGADD(1,( "Copyright Andrew Tridgell 1992-1998\n"));
 722
 723         DEBUG(2,("uid=%d gid=%d euid=%d egid=%d\n",
 724                  (int)getuid(),(int)getgid(),(int)geteuid(),(int)getegid()));
 725
 726         /* Output the build options to the debug log */
 727         build_options(False);
 728
 729         if (sizeof(uint16) < 2 || sizeof(uint32) < 4) {
 730                 DEBUG(0,("ERROR: Samba is not configured correctly for the word size on your machine\n"));
 731                 exit(1);
 732         }
 733
 734         /*
 735          * Do this before reload_services.
 736          */
 737
 738         if (!reload_services(False))
 739                 return(-1);
 740
 741         init_structs();
 742
 743         /* don't call winbind for our domain if we are the DC */
 744         if (lp_domain_logons()) {
 745                 winbind_exclude_domain(lp_workgroup());
 746         }
 747
 748 #ifdef WITH_PROFILE
 749         if (!profile_setup(False)) {
 750                 DEBUG(0,("ERROR: failed to setup profiling\n"));
 751                 return -1;
 752         }
 753 #endif
 754
 755 #ifdef WITH_SSL
 756         {
 757                 extern BOOL sslEnabled;
 758                 sslEnabled = lp_ssl_enabled();
 759                 if(sslEnabled)
 760                         sslutil_init(True);
 761         }
 762 #endif        /* WITH_SSL */
 763
 764         fstrcpy(global_myworkgroup, lp_workgroup());
 765
 766         CatchSignal(SIGHUP,SIGNAL_CAST sig_hup);
 767
 768         DEBUG(3,( "loaded services\n"));
 769
 770         if (!is_daemon && !is_a_socket(0)) {
 771                 DEBUG(0,("standard input is not a socket, assuming -D option\n"));
 772                 is_daemon = True;
 773         }
 774
 775         if (is_daemon) {
 776                 DEBUG( 3, ( "Becoming a daemon.\n" ) );
 777                 become_daemon();
 778         }
 779
 780         if (!directory_exist(lp_lockdir(), NULL)) {
 781                 mkdir(lp_lockdir(), 0755);
 782         }
 783
 784         if (is_daemon) {
 785                 pidfile_create("smbd");
 786         }
 787
 788         if (!message_init()) {
 789                 exit(1);
 790         }
 791
 792         /* Setup the main smbd so that we can get messages. */
 793         claim_connection(NULL,"",MAXSTATUS,True);
 794
 795         /*
 796            DO NOT ENABLE THIS TILL YOU COPE WITH KILLING THESE TASKS AND INETD
 797            THIS *killed* LOTS OF BUILD FARM MACHINES. IT CREATED HUNDREDS OF
 798            smbd PROCESSES THAT NEVER DIE
 799            start_background_queue();
 800         */
 801
 802         if (!open_sockets(is_daemon,port))
 803                 exit(1);
 804
 805         /*
 806          * everything after this point is run after the fork()
 807          */
 808
 809         if (!locking_init(0)) {
 810                 exit(1);
 811         }
 812
 813         if (!print_backend_init()) {
 814                 exit(1);
 815         }
 816
 817         if (!share_info_db_init()) {
 818                 exit(1);
 819         }
 820
 821         if(!initialize_password_db(False)) {
 822                 exit(1);
 823         }
 824
 825         /* possibly reload the services file. */
 826         reload_services(True);
 827
 828         if (init_group_mapping()==False) {
 829                 printf("Could not open tdb mapping file.\n");
 830                 return 0;
 831         }
 832
 833         if(!pdb_generate_sam_sid()) {
 834                 DEBUG(0,("ERROR: Samba cannot create a SAM SID.\n"));
 835                 exit(1);
 836         }
 837
 838         if (*lp_rootdir()) {
 839                 if (sys_chroot(lp_rootdir()) == 0)
 840                         DEBUG(2,("Changed root to %s\n", lp_rootdir()));
 841         }
 842
 843         /* Setup oplocks */
 844         if (!init_oplocks()) {
 845                 exit(1);
 846         }
 847
 848         /* Setup mangle */
 849         if (!init_mangle_tdb()) {
 850                 exit(1);
 851         }
 852
 853         /* Setup change notify */
 854         if (!init_change_notify()) {
 855                 exit(1);
 856         }
 857
 858         smbd_process();
 859
 860         exit_server("normal exit");
 861         return(0);
 862 }