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 pstring user_socket_options;
  38
  39 #ifdef WITH_DFS
  40 extern int dcelogin_atmost_once;
  41 #endif /* WITH_DFS */
  42
  43 extern fstring remote_machine;
  44
  45 /* really we should have a top level context structure that has the
  46    client file descriptor as an element. That would require a major rewrite :(
  47
  48    the following 2 functions are an alternative - they make the file
  49    descriptor private to smbd
  50  */
  51 static int server_fd = -1;
  52
  53 int smbd_server_fd(void)
  54 {
  55         return server_fd;
  56 }
  57
  58 void smbd_set_server_fd(int fd)
  59 {
  60         server_fd = fd;
  61         client_setfd(fd);
  62 }
  63
  64 /****************************************************************************
  65   when exiting, take the whole family
  66 ****************************************************************************/
  67 static void *dflt_sig(void)
  68 {
  69         exit_server("caught signal");
  70         return NULL;
  71 }
  72
  73 /****************************************************************************
  74   Send a SIGTERM to our process group.
  75 *****************************************************************************/
  76 static void  killkids(void)
  77 {
  78         if(am_parent) kill(0,SIGTERM);
  79 }
  80
  81 /****************************************************************************
  82   process a sam sync message - not sure whether to do this here or
  83   somewhere else
  84 ****************************************************************************/
  85 static void msg_sam_sync(int msg_type, pid_t pid, void *buf, size_t len)
  86 {
  87         DEBUG(10, ("** sam sync message received, ignoring\n"));
  88 }
  89
  90 /****************************************************************************
  91   process a sam sync replicate message - not sure whether to do this here or
  92   somewhere else
  93 ****************************************************************************/
  94 static void msg_sam_repl(int msg_type, pid_t pid, void *buf, size_t len)
  95 {
  96         uint32 low_serial;
  97
  98         if (len != sizeof(uint32))
  99                 return;
 100
 101         low_serial = *((uint32 *)buf);
 102
 103         DEBUG(3, ("received sam replication message, serial = 0x%04x\n",
 104                   low_serial));
 105 }
 106
 107 /****************************************************************************
 108   open the socket communication
 109 ****************************************************************************/
 110 static BOOL open_sockets_inetd(void)
 111 {
 112         /* Started from inetd. fd 0 is the socket. */
 113         /* We will abort gracefully when the client or remote system
 114            goes away */
 115         smbd_set_server_fd(dup(0));
 116
 117         /* close our standard file descriptors */
 118         close_low_fds();
 119
 120         set_socket_options(smbd_server_fd(),"SO_KEEPALIVE");
 121         set_socket_options(smbd_server_fd(),user_socket_options);
 122
 123         return True;
 124 }
 125
 126
 127 /****************************************************************************
 128   open the socket communication
 129 ****************************************************************************/
 130 static BOOL open_sockets(BOOL is_daemon,int port)
 131 {
 132         int num_interfaces = iface_count();
 133         int fd_listenset[FD_SETSIZE];
 134         fd_set listen_set;
 135         int s;
 136         int i;
 137
 138         if (!is_daemon) {
 139                 return open_sockets_inetd();
 140         }
 141
 142
 143 #ifdef HAVE_ATEXIT
 144         {
 145                 static int atexit_set;
 146                 if(atexit_set == 0) {
 147                         atexit_set=1;
 148                         atexit(killkids);
 149                 }
 150         }
 151 #endif
 152
 153         /* Stop zombies */
 154         CatchChild();
 155
 156
 157         FD_ZERO(&listen_set);
 158
 159         if(lp_interfaces() && lp_bind_interfaces_only()) {
 160                 /* We have been given an interfaces line, and been
 161                    told to only bind to those interfaces. Create a
 162                    socket per interface and bind to only these.
 163                 */
 164
 165                 if(num_interfaces > FD_SETSIZE) {
 166                         DEBUG(0,("open_sockets: Too many interfaces specified to bind to. Number was %d \
 167 max can be %d\n",
 168                                  num_interfaces, FD_SETSIZE));
 169                         return False;
 170                 }
 171
 172                 /* Now open a listen socket for each of the
 173                    interfaces. */
 174                 for(i = 0; i < num_interfaces; i++) {
 175                         struct in_addr *ifip = iface_n_ip(i);
 176
 177                         if(ifip == NULL) {
 178                                 DEBUG(0,("open_sockets: interface %d has NULL IP address !\n", i));
 179                                 continue;
 180                         }
 181                         s = fd_listenset[i] = open_socket_in(SOCK_STREAM, port, 0, ifip->s_addr, True);
 182                         if(s == -1)
 183                                 return False;
 184
 185                         /* ready to listen */
 186                         set_socket_options(s,"SO_KEEPALIVE");
 187                         set_socket_options(s,user_socket_options);
 188
 189                         if (listen(s, 5) == -1) {
 190                                 DEBUG(0,("listen: %s\n",strerror(errno)));
 191                                 close(s);
 192                                 return False;
 193                         }
 194                         FD_SET(s,&listen_set);
 195                 }
 196         } else {
 197                 /* Just bind to 0.0.0.0 - accept connections
 198                    from anywhere. */
 199                 num_interfaces = 1;
 200
 201                 /* open an incoming socket */
 202                 s = open_socket_in(SOCK_STREAM, port, 0,
 203                                    interpret_addr(lp_socket_address()),True);
 204                 if (s == -1)
 205                         return(False);
 206
 207                 /* ready to listen */
 208                 set_socket_options(s,"SO_KEEPALIVE");
 209                 set_socket_options(s,user_socket_options);
 210
 211                 if (listen(s, 5) == -1) {
 212                         DEBUG(0,("open_sockets: listen: %s\n",
 213                                  strerror(errno)));
 214                         close(s);
 215                         return False;
 216                 }
 217
 218                 fd_listenset[0] = s;
 219                 FD_SET(s,&listen_set);
 220         }
 221
 222         /* Listen to messages */
 223
 224         message_register(MSG_SMB_SAM_SYNC, msg_sam_sync);
 225         message_register(MSG_SMB_SAM_REPL, msg_sam_repl);
 226
 227         /* now accept incoming connections - forking a new process
 228            for each incoming connection */
 229         DEBUG(2,("waiting for a connection\n"));
 230         while (1) {
 231                 fd_set lfds;
 232                 int num;
 233
 234                 /* Free up temporary memory from the main smbd. */
 235                 lp_talloc_free();
 236
 237                 /* Ensure we respond to PING and DEBUG messages from the main smbd. */
 238                 message_dispatch();
 239
 240                 memcpy((char *)&lfds, (char *)&listen_set,
 241                        sizeof(listen_set));
 242
 243                 num = sys_select(FD_SETSIZE,&lfds,NULL);
 244
 245                 if (num == -1 && errno == EINTR) {
 246                         extern VOLATILE sig_atomic_t reload_after_sighup;
 247
 248                         /* check for sighup processing */
 249                         if (reload_after_sighup) {
 250                                 unbecome_user();
 251                                 DEBUG(1,("Reloading services after SIGHUP\n"));
 252                                 reload_services(False);
 253                                 reload_after_sighup = False;
 254                         }
 255
 256                         continue;
 257                 }
 258
 259                 /* check if we need to reload services */
 260                 check_reload(time(NULL));
 261
 262                 /* Find the sockets that are read-ready -
 263                    accept on these. */
 264                 for( ; num > 0; num--) {
 265                         struct sockaddr addr;
 266                         socklen_t in_addrlen = sizeof(addr);
 267
 268                         s = -1;
 269                         for(i = 0; i < num_interfaces; i++) {
 270                                 if(FD_ISSET(fd_listenset[i],&lfds)) {
 271                                         s = fd_listenset[i];
 272                                         /* Clear this so we don't look
 273                                            at it again. */
 274                                         FD_CLR(fd_listenset[i],&lfds);
 275                                         break;
 276                                 }
 277                         }
 278
 279                         smbd_set_server_fd(accept(s,&addr,&in_addrlen));
 280
 281                         if (smbd_server_fd() == -1 && errno == EINTR)
 282                                 continue;
 283
 284                         if (smbd_server_fd() == -1) {
 285                                 DEBUG(0,("open_sockets: accept: %s\n",
 286                                          strerror(errno)));
 287                                 continue;
 288                         }
 289
 290                         if (smbd_server_fd() != -1 && sys_fork()==0) {
 291                                 /* Child code ... */
 292
 293                                 /* close the listening socket(s) */
 294                                 for(i = 0; i < num_interfaces; i++)
 295                                         close(fd_listenset[i]);
 296
 297                                 /* close our standard file
 298                                    descriptors */
 299                                 close_low_fds();
 300                                 am_parent = 0;
 301
 302                                 set_socket_options(smbd_server_fd(),"SO_KEEPALIVE");
 303                                 set_socket_options(smbd_server_fd(),user_socket_options);
 304
 305                                 /* Reset global variables in util.c so
 306                                    that client substitutions will be
 307                                    done correctly in the process.  */
 308                                 reset_globals_after_fork();
 309
 310                                 /* tdb needs special fork handling */
 311                                 tdb_reopen_all();
 312
 313                                 return True;
 314                         }
 315                         /* The parent doesn't need this socket */
 316                         close(smbd_server_fd());
 317
 318                         /* Sun May 6 18:56:14 2001 ackley@cs.unm.edu:
 319                                 Clear the closed fd info out of server_fd --
 320                                 and more importantly, out of client_fd in
 321                                 util_sock.c, to avoid a possible
 322                                 getpeername failure if we reopen the logs
 323                                 and use %I in the filename.
 324                         */
 325
 326                         smbd_set_server_fd(-1);
 327
 328                         /* Force parent to check log size after
 329                          * spawning child.  Fix from
 330                          * klausr@ITAP.Physik.Uni-Stuttgart.De.  The
 331                          * parent smbd will log to logserver.smb.  It
 332                          * writes only two messages for each child
 333                          * started/finished. But each child writes,
 334                          * say, 50 messages also in logserver.smb,
 335                          * begining with the debug_count of the
 336                          * parent, before the child opens its own log
 337                          * file logserver.client. In a worst case
 338                          * scenario the size of logserver.smb would be
 339                          * checked after about 50*50=2500 messages
 340                          * (ca. 100kb).
 341                          * */
 342                         force_check_log_size();
 343
 344                 } /* end for num */
 345         } /* end while 1 */
 346
 347 /* NOTREACHED   return True; */
 348 }
 349
 350 /****************************************************************************
 351   reload the services file
 352   **************************************************************************/
 353 BOOL reload_services(BOOL test)
 354 {
 355         BOOL ret;
 356
 357         if (lp_loaded()) {
 358                 pstring fname;
 359                 pstrcpy(fname,lp_configfile());
 360                 if (file_exist(fname,NULL) && !strcsequal(fname,servicesf)) {
 361                         pstrcpy(servicesf,fname);
 362                         test = False;
 363                 }
 364         }
 365
 366         reopen_logs();
 367
 368         if (test && !lp_file_list_changed())
 369                 return(True);
 370
 371         lp_killunused(conn_snum_used);
 372
 373         ret = lp_load(servicesf,False,False,True);
 374
 375         load_printers();
 376
 377         /* perhaps the config filename is now set */
 378         if (!test)
 379                 reload_services(True);
 380
 381         reopen_logs();
 382
 383         load_interfaces();
 384
 385         {
 386                 if (smbd_server_fd() != -1) {
 387                         set_socket_options(smbd_server_fd(),"SO_KEEPALIVE");
 388                         set_socket_options(smbd_server_fd(),user_socket_options);
 389                 }
 390         }
 391
 392         reset_mangled_cache();
 393         reset_stat_cache();
 394
 395         /* this forces service parameters to be flushed */
 396         become_service(NULL,True);
 397
 398         return(ret);
 399 }
 400
 401
 402
 403 /****************************************************************************
 404  Catch a sighup.
 405 ****************************************************************************/
 406
 407 VOLATILE sig_atomic_t reload_after_sighup = False;
 408
 409 static void sig_hup(int sig)
 410 {
 411         BlockSignals(True,SIGHUP);
 412         DEBUG(0,("Got SIGHUP\n"));
 413
 414         sys_select_signal();
 415         reload_after_sighup = True;
 416         BlockSignals(False,SIGHUP);
 417 }
 418
 419
 420
 421 #if DUMP_CORE
 422 /*******************************************************************
 423 prepare to dump a core file - carefully!
 424 ********************************************************************/
 425 static BOOL dump_core(void)
 426 {
 427         char *p;
 428         pstring dname;
 429         pstrcpy(dname,debugf);
 430         if ((p=strrchr_m(dname,'/'))) *p=0;
 431         pstrcat(dname,"/corefiles");
 432         mkdir(dname,0700);
 433         sys_chown(dname,getuid(),getgid());
 434         chmod(dname,0700);
 435         if (chdir(dname)) return(False);
 436         umask(~(0700));
 437
 438 #ifdef HAVE_GETRLIMIT
 439 #ifdef RLIMIT_CORE
 440         {
 441                 struct rlimit rlp;
 442                 getrlimit(RLIMIT_CORE, &rlp);
 443                 rlp.rlim_cur = MAX(4*1024*1024,rlp.rlim_cur);
 444                 setrlimit(RLIMIT_CORE, &rlp);
 445                 getrlimit(RLIMIT_CORE, &rlp);
 446                 DEBUG(3,("Core limits now %d %d\n",
 447                          (int)rlp.rlim_cur,(int)rlp.rlim_max));
 448         }
 449 #endif
 450 #endif
 451
 452
 453         DEBUG(0,("Dumping core in %s\n",dname));
 454         abort();
 455         return(True);
 456 }
 457 #endif
 458
 459 /****************************************************************************
 460 update the current smbd process count
 461 ****************************************************************************/
 462
 463 static void decrement_smbd_process_count(void)
 464 {
 465         int total_smbds;
 466
 467         if (lp_max_smbd_processes()) {
 468                 total_smbds = 0;
 469                 tdb_change_int_atomic(conn_tdb_ctx(), "INFO/total_smbds", &total_smbds, -1);
 470         }
 471 }
 472
 473 /****************************************************************************
 474 exit the server
 475 ****************************************************************************/
 476 void exit_server(char *reason)
 477 {
 478         static int firsttime=1;
 479         extern char *last_inbuf;
 480
 481
 482         if (!firsttime) exit(0);
 483         firsttime = 0;
 484
 485         unbecome_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(servicesf,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", LOGFILEBASE);
 674         }
 675
 676         pstrcpy(remote_machine, "smbd");
 677
 678         setup_logging(argv[0],False);
 679
 680         /* we want to re-seed early to prevent time delays causing
 681            client problems at a later date. (tridge) */
 682         generate_random_buffer(NULL, 0, False);
 683
 684         /* make absolutely sure we run as root - to handle cases where people
 685            are crazy enough to have it setuid */
 686
 687         gain_root_privilege();
 688         gain_root_group_privilege();
 689
 690         fault_setup((void (*)(void *))exit_server);
 691         CatchSignal(SIGTERM , SIGNAL_CAST dflt_sig);
 692
 693         /* we are never interested in SIGPIPE */
 694         BlockSignals(True,SIGPIPE);
 695
 696 #if defined(SIGFPE)
 697         /* we are never interested in SIGFPE */
 698         BlockSignals(True,SIGFPE);
 699 #endif
 700
 701 #if defined(SIGUSR2)
 702         /* We are no longer interested in USR2 */
 703         BlockSignals(True,SIGUSR2);
 704 #endif
 705
 706         /* POSIX demands that signals are inherited. If the invoking process has
 707          * these signals masked, we will have problems, as we won't recieve them. */
 708         BlockSignals(False, SIGHUP);
 709         BlockSignals(False, SIGUSR1);
 710
 711         /* we want total control over the permissions on created files,
 712            so set our umask to 0 */
 713         umask(0);
 714
 715         init_sec_ctx();
 716
 717         reopen_logs();
 718
 719         DEBUG(1,( "smbd version %s started.\n", VERSION));
 720         DEBUGADD(1,( "Copyright Andrew Tridgell 1992-1998\n"));
 721
 722         DEBUG(2,("uid=%d gid=%d euid=%d egid=%d\n",
 723                  (int)getuid(),(int)getgid(),(int)geteuid(),(int)getegid()));
 724
 725         /* Output the build options to the debug log */
 726         build_options(False);
 727
 728         if (sizeof(uint16) < 2 || sizeof(uint32) < 4) {
 729                 DEBUG(0,("ERROR: Samba is not configured correctly for the word size on your machine\n"));
 730                 exit(1);
 731         }
 732
 733         /*
 734          * Do this before reload_services.
 735          */
 736
 737         if (!reload_services(False))
 738                 return(-1);
 739
 740         init_structs();
 741
 742         /* don't call winbind for our domain if we are the DC */
 743         if (lp_domain_logons()) {
 744                 winbind_exclude_domain(lp_workgroup());
 745         }
 746
 747 #ifdef WITH_PROFILE
 748         if (!profile_setup(False)) {
 749                 DEBUG(0,("ERROR: failed to setup profiling\n"));
 750                 return -1;
 751         }
 752 #endif
 753
 754 #ifdef WITH_SSL
 755         {
 756                 extern BOOL sslEnabled;
 757                 sslEnabled = lp_ssl_enabled();
 758                 if(sslEnabled)
 759                         sslutil_init(True);
 760         }
 761 #endif        /* WITH_SSL */
 762
 763         fstrcpy(global_myworkgroup, lp_workgroup());
 764
 765         CatchSignal(SIGHUP,SIGNAL_CAST sig_hup);
 766
 767         DEBUG(3,( "loaded services\n"));
 768
 769         if (!is_daemon && !is_a_socket(0)) {
 770                 DEBUG(0,("standard input is not a socket, assuming -D option\n"));
 771                 is_daemon = True;
 772         }
 773
 774         if (is_daemon) {
 775                 DEBUG( 3, ( "Becoming a daemon.\n" ) );
 776                 become_daemon();
 777         }
 778
 779         if (!directory_exist(lp_lockdir(), NULL)) {
 780                 mkdir(lp_lockdir(), 0755);
 781         }
 782
 783         if (is_daemon) {
 784                 pidfile_create("smbd");
 785         }
 786
 787         if (!message_init()) {
 788                 exit(1);
 789         }
 790
 791         /* Setup the main smbd so that we can get messages. */
 792         claim_connection(NULL,"",MAXSTATUS,True);
 793
 794         if (!open_sockets(is_daemon,port))
 795                 exit(1);
 796
 797         /*
 798          * everything after this point is run after the fork()
 799          */
 800
 801         if (!locking_init(0)) {
 802                 exit(1);
 803         }
 804
 805         if (!print_backend_init()) {
 806                 exit(1);
 807         }
 808
 809         if (!share_info_db_init()) {
 810                 exit(1);
 811         }
 812
 813         if(!initialize_password_db(False)) {
 814                 exit(1);
 815         }
 816
 817         /* possibly reload the services file. */
 818         reload_services(True);
 819
 820         if (init_group_mapping()==False) {
 821                 printf("Could not open tdb mapping file.\n");
 822                 return 0;
 823         }
 824
 825         if(!pdb_generate_sam_sid()) {
 826                 DEBUG(0,("ERROR: Samba cannot create a SAM SID.\n"));
 827                 exit(1);
 828         }
 829
 830         if (*lp_rootdir()) {
 831                 if (sys_chroot(lp_rootdir()) == 0)
 832                         DEBUG(2,("Changed root to %s\n", lp_rootdir()));
 833         }
 834
 835         /* Setup oplocks */
 836         if (!init_oplocks()) {
 837                 exit(1);
 838         }
 839
 840         /* Setup change notify */
 841         if (!init_change_notify()) {
 842                 exit(1);
 843         }
 844
 845         smbd_process();
 846
 847         exit_server("normal exit");
 848         return(0);
 849 }