source3/smbd/server.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    Main SMB server routines
   4    Copyright (C) Andrew Tridgell                1992-1998
   5    Copyright (C) Martin Pool                    2002
   6    Copyright (C) Jelmer Vernooij                2002
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 2 of the License, or
  11    (at your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program; if not, write to the Free Software
  20    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  21 */
  22
  23 #include "includes.h"
  24
  25 int am_parent = 1;
  26
  27 /* the last message the was processed */
  28 int last_message = -1;
  29
  30 /* a useful macro to debug the last message processed */
  31 #define LAST_MESSAGE() smb_fn_name(last_message)
  32
  33 extern pstring user_socket_options;
  34 extern SIG_ATOMIC_T got_sig_term;
  35 extern SIG_ATOMIC_T reload_after_sighup;
  36
  37 #ifdef WITH_DFS
  38 extern int dcelogin_atmost_once;
  39 #endif /* WITH_DFS */
  40
  41 /* really we should have a top level context structure that has the
  42    client file descriptor as an element. That would require a major rewrite :(
  43
  44    the following 2 functions are an alternative - they make the file
  45    descriptor private to smbd
  46  */
  47 static int server_fd = -1;
  48
  49 int smbd_server_fd(void)
  50 {
  51         return server_fd;
  52 }
  53
  54 static void smbd_set_server_fd(int fd)
  55 {
  56         server_fd = fd;
  57         client_setfd(fd);
  58 }
  59
  60 /****************************************************************************
  61  Terminate signal.
  62 ****************************************************************************/
  63
  64 static void sig_term(void)
  65 {
  66         got_sig_term = 1;
  67         sys_select_signal();
  68 }
  69
  70 /****************************************************************************
  71  Catch a sighup.
  72 ****************************************************************************/
  73
  74 static void sig_hup(int sig)
  75 {
  76         reload_after_sighup = 1;
  77         sys_select_signal();
  78 }
  79
  80 /****************************************************************************
  81   Send a SIGTERM to our process group.
  82 *****************************************************************************/
  83
  84 static void  killkids(void)
  85 {
  86         if(am_parent) kill(0,SIGTERM);
  87 }
  88
  89 /****************************************************************************
  90  Process a sam sync message - not sure whether to do this here or
  91  somewhere else.
  92 ****************************************************************************/
  93
  94 static void msg_sam_sync(int UNUSED(msg_type), pid_t UNUSED(pid),
  95                          void *UNUSED(buf), size_t UNUSED(len))
  96 {
  97         DEBUG(10, ("** sam sync message received, ignoring\n"));
  98 }
  99
 100 /****************************************************************************
 101  Process a sam sync replicate message - not sure whether to do this here or
 102  somewhere else.
 103 ****************************************************************************/
 104
 105 static void msg_sam_repl(int msg_type, pid_t pid, void *buf, size_t len)
 106 {
 107         uint32 low_serial;
 108
 109         if (len != sizeof(uint32))
 110                 return;
 111
 112         low_serial = *((uint32 *)buf);
 113
 114         DEBUG(3, ("received sam replication message, serial = 0x%04x\n",
 115                   low_serial));
 116 }
 117
 118 /****************************************************************************
 119  Open the socket communication - inetd.
 120 ****************************************************************************/
 121
 122 static BOOL open_sockets_inetd(void)
 123 {
 124         /* Started from inetd. fd 0 is the socket. */
 125         /* We will abort gracefully when the client or remote system
 126            goes away */
 127         smbd_set_server_fd(dup(0));
 128
 129         /* close our standard file descriptors */
 130         close_low_fds(False); /* Don't close stderr */
 131
 132         set_socket_options(smbd_server_fd(),"SO_KEEPALIVE");
 133         set_socket_options(smbd_server_fd(), user_socket_options);
 134
 135         return True;
 136 }
 137
 138 static void msg_exit_server(int msg_type, pid_t src, void *buf, size_t len)
 139 {
 140         exit_server("Got a SHUTDOWN message");
 141 }
 142
 143
 144 /****************************************************************************
 145  Open the socket communication.
 146 ****************************************************************************/
 147
 148 static BOOL open_sockets_smbd(BOOL is_daemon,const char *smb_ports)
 149 {
 150         int num_interfaces = iface_count();
 151         int num_sockets = 0;
 152         int fd_listenset[FD_SETSIZE];
 153         fd_set listen_set;
 154         int s;
 155         int i;
 156         char *ports;
 157
 158         if (!is_daemon) {
 159                 return open_sockets_inetd();
 160         }
 161
 162
 163 #ifdef HAVE_ATEXIT
 164         {
 165                 static int atexit_set;
 166                 if(atexit_set == 0) {
 167                         atexit_set=1;
 168                         atexit(killkids);
 169                 }
 170         }
 171 #endif
 172
 173         /* Stop zombies */
 174         CatchChild();
 175
 176         FD_ZERO(&listen_set);
 177
 178         /* use a reasonable default set of ports - listing on 445 and 139 */
 179         if (!smb_ports) {
 180                 ports = lp_smb_ports();
 181                 if (!ports || !*ports) {
 182                         ports = SMB_PORTS;
 183                 }
 184                 ports = strdup(ports);
 185         } else {
 186                 ports = strdup(smb_ports);
 187         }
 188
 189         if (lp_interfaces() && lp_bind_interfaces_only()) {
 190                 /* We have been given an interfaces line, and been
 191                    told to only bind to those interfaces. Create a
 192                    socket per interface and bind to only these.
 193                 */
 194
 195                 /* Now open a listen socket for each of the
 196                    interfaces. */
 197                 for(i = 0; i < num_interfaces; i++) {
 198                         struct in_addr *ifip = iface_n_ip(i);
 199                         fstring tok;
 200                         const char *ptr;
 201
 202                         if(ifip == NULL) {
 203                                 DEBUG(0,("open_sockets_smbd: interface %d has NULL IP address !\n", i));
 204                                 continue;
 205                         }
 206
 207                         for (ptr=ports; next_token(&ptr, tok, NULL, sizeof(tok)); ) {
 208                                 unsigned port = atoi(tok);
 209                                 if (port == 0) continue;
 210                                 s = fd_listenset[num_sockets] = open_socket_in(SOCK_STREAM, port, 0, ifip->s_addr, True);
 211                                 if(s == -1)
 212                                         return False;
 213
 214                                 /* ready to listen */
 215                                 set_socket_options(s,"SO_KEEPALIVE");
 216                                 set_socket_options(s,user_socket_options);
 217
 218                                 if (listen(s, 5) == -1) {
 219                                         DEBUG(0,("listen: %s\n",strerror(errno)));
 220                                         close(s);
 221                                         return False;
 222                                 }
 223                                 FD_SET(s,&listen_set);
 224
 225                                 num_sockets++;
 226                                 if (num_sockets >= FD_SETSIZE) {
 227                                         DEBUG(0,("open_sockets_smbd: Too many sockets to bind to\n"));
 228                                         return False;
 229                                 }
 230                         }
 231                 }
 232         } else {
 233                 /* Just bind to 0.0.0.0 - accept connections
 234                    from anywhere. */
 235
 236                 fstring tok;
 237                 const char *ptr;
 238
 239                 num_interfaces = 1;
 240
 241                 for (ptr=ports; next_token(&ptr, tok, NULL, sizeof(tok)); ) {
 242                         unsigned port = atoi(tok);
 243                         if (port == 0) continue;
 244                         /* open an incoming socket */
 245                         s = open_socket_in(SOCK_STREAM, port, 0,
 246                                            interpret_addr(lp_socket_address()),True);
 247                         if (s == -1)
 248                                 return(False);
 249
 250                         /* ready to listen */
 251                         set_socket_options(s,"SO_KEEPALIVE");
 252                         set_socket_options(s,user_socket_options);
 253
 254                         if (listen(s, 5) == -1) {
 255                                 DEBUG(0,("open_sockets_smbd: listen: %s\n",
 256                                          strerror(errno)));
 257                                 close(s);
 258                                 return False;
 259                         }
 260
 261                         fd_listenset[num_sockets] = s;
 262                         FD_SET(s,&listen_set);
 263
 264                         num_sockets++;
 265
 266                         if (num_sockets >= FD_SETSIZE) {
 267                                 DEBUG(0,("open_sockets_smbd: Too many sockets to bind to\n"));
 268                                 return False;
 269                         }
 270                 }
 271         }
 272
 273         SAFE_FREE(ports);
 274
 275         /* Listen to messages */
 276
 277         message_register(MSG_SMB_SAM_SYNC, msg_sam_sync);
 278         message_register(MSG_SMB_SAM_REPL, msg_sam_repl);
 279         message_register(MSG_SHUTDOWN, msg_exit_server);
 280
 281         /* now accept incoming connections - forking a new process
 282            for each incoming connection */
 283         DEBUG(2,("waiting for a connection\n"));
 284         while (1) {
 285                 fd_set lfds;
 286                 int num;
 287
 288                 /* Free up temporary memory from the main smbd. */
 289                 lp_talloc_free();
 290
 291                 /* Ensure we respond to PING and DEBUG messages from the main smbd. */
 292                 message_dispatch();
 293
 294                 memcpy((char *)&lfds, (char *)&listen_set,
 295                        sizeof(listen_set));
 296
 297                 num = sys_select(FD_SETSIZE,&lfds,NULL,NULL,NULL);
 298
 299                 if (num == -1 && errno == EINTR) {
 300                         if (got_sig_term) {
 301                                 exit_server("Caught TERM signal");
 302                         }
 303
 304                         /* check for sighup processing */
 305                         if (reload_after_sighup) {
 306                                 change_to_root_user();
 307                                 DEBUG(1,("Reloading services after SIGHUP\n"));
 308                                 reload_services(False);
 309                                 reload_after_sighup = 0;
 310                         }
 311
 312                         continue;
 313                 }
 314
 315                 /* check if we need to reload services */
 316                 check_reload(time(NULL));
 317
 318                 /* Find the sockets that are read-ready -
 319                    accept on these. */
 320                 for( ; num > 0; num--) {
 321                         struct sockaddr addr;
 322                         socklen_t in_addrlen = sizeof(addr);
 323
 324                         s = -1;
 325                         for(i = 0; i < num_sockets; i++) {
 326                                 if(FD_ISSET(fd_listenset[i],&lfds)) {
 327                                         s = fd_listenset[i];
 328                                         /* Clear this so we don't look
 329                                            at it again. */
 330                                         FD_CLR(fd_listenset[i],&lfds);
 331                                         break;
 332                                 }
 333                         }
 334
 335                         smbd_set_server_fd(accept(s,&addr,&in_addrlen));
 336
 337                         if (smbd_server_fd() == -1 && errno == EINTR)
 338                                 continue;
 339
 340                         if (smbd_server_fd() == -1) {
 341                                 DEBUG(0,("open_sockets_smbd: accept: %s\n",
 342                                          strerror(errno)));
 343                                 continue;
 344                         }
 345
 346                         if (smbd_server_fd() != -1 && sys_fork()==0) {
 347                                 /* Child code ... */
 348
 349                                 /* close the listening socket(s) */
 350                                 for(i = 0; i < num_sockets; i++)
 351                                         close(fd_listenset[i]);
 352
 353                                 /* close our standard file
 354                                    descriptors */
 355                                 close_low_fds(False);
 356                                 am_parent = 0;
 357
 358                                 set_socket_options(smbd_server_fd(),"SO_KEEPALIVE");
 359                                 set_socket_options(smbd_server_fd(),user_socket_options);
 360
 361                                 /* this is needed so that we get decent entries
 362                                    in smbstatus for port 445 connects */
 363                                 set_remote_machine_name(get_socket_addr(smbd_server_fd()));
 364
 365                                 /* Reset global variables in util.c so
 366                                    that client substitutions will be
 367                                    done correctly in the process.  */
 368                                 reset_globals_after_fork();
 369
 370                                 /* tdb needs special fork handling */
 371                                 if (tdb_reopen_all() == -1) {
 372                                         DEBUG(0,("tdb_reopen_all failed.\n"));
 373                                         return False;
 374                                 }
 375
 376                                 return True;
 377                         }
 378                         /* The parent doesn't need this socket */
 379                         close(smbd_server_fd());
 380
 381                         /* Sun May 6 18:56:14 2001 ackley@cs.unm.edu:
 382                                 Clear the closed fd info out of server_fd --
 383                                 and more importantly, out of client_fd in
 384                                 util_sock.c, to avoid a possible
 385                                 getpeername failure if we reopen the logs
 386                                 and use %I in the filename.
 387                         */
 388
 389                         smbd_set_server_fd(-1);
 390
 391                         /* Force parent to check log size after
 392                          * spawning child.  Fix from
 393                          * klausr@ITAP.Physik.Uni-Stuttgart.De.  The
 394                          * parent smbd will log to logserver.smb.  It
 395                          * writes only two messages for each child
 396                          * started/finished. But each child writes,
 397                          * say, 50 messages also in logserver.smb,
 398                          * begining with the debug_count of the
 399                          * parent, before the child opens its own log
 400                          * file logserver.client. In a worst case
 401                          * scenario the size of logserver.smb would be
 402                          * checked after about 50*50=2500 messages
 403                          * (ca. 100kb).
 404                          * */
 405                         force_check_log_size();
 406
 407                 } /* end for num */
 408         } /* end while 1 */
 409
 410 /* NOTREACHED   return True; */
 411 }
 412
 413 /****************************************************************************
 414  Reload the services file.
 415 **************************************************************************/
 416
 417 BOOL reload_services(BOOL test)
 418 {
 419         BOOL ret;
 420
 421         if (lp_loaded()) {
 422                 pstring fname;
 423                 pstrcpy(fname,lp_configfile());
 424                 if (file_exist(fname, NULL) &&
 425                     !strcsequal(fname, dyn_CONFIGFILE)) {
 426                         pstrcpy(dyn_CONFIGFILE, fname);
 427                         test = False;
 428                 }
 429         }
 430
 431         reopen_logs();
 432
 433         if (test && !lp_file_list_changed())
 434                 return(True);
 435
 436         lp_killunused(conn_snum_used);
 437
 438         ret = lp_load(dyn_CONFIGFILE, False, False, True);
 439
 440         load_printers();
 441
 442         /* perhaps the config filename is now set */
 443         if (!test)
 444                 reload_services(True);
 445
 446         reopen_logs();
 447
 448         load_interfaces();
 449
 450         {
 451                 if (smbd_server_fd() != -1) {
 452                         set_socket_options(smbd_server_fd(),"SO_KEEPALIVE");
 453                         set_socket_options(smbd_server_fd(), user_socket_options);
 454                 }
 455         }
 456
 457         mangle_reset_cache();
 458         reset_stat_cache();
 459
 460         /* this forces service parameters to be flushed */
 461         set_current_service(NULL,True);
 462
 463         return(ret);
 464 }
 465
 466 #if DUMP_CORE
 467 /*******************************************************************
 468 prepare to dump a core file - carefully!
 469 ********************************************************************/
 470 static BOOL dump_core(void)
 471 {
 472         char *p;
 473         pstring dname;
 474
 475         pstrcpy(dname,lp_logfile());
 476         if ((p=strrchr_m(dname,'/'))) *p=0;
 477         pstrcat(dname,"/corefiles");
 478         mkdir(dname,0700);
 479         sys_chown(dname,getuid(),getgid());
 480         chmod(dname,0700);
 481         if (chdir(dname)) return(False);
 482         umask(~(0700));
 483
 484 #ifdef HAVE_GETRLIMIT
 485 #ifdef RLIMIT_CORE
 486         {
 487                 struct rlimit rlp;
 488                 getrlimit(RLIMIT_CORE, &rlp);
 489                 rlp.rlim_cur = MAX(4*1024*1024,rlp.rlim_cur);
 490                 setrlimit(RLIMIT_CORE, &rlp);
 491                 getrlimit(RLIMIT_CORE, &rlp);
 492                 DEBUG(3,("Core limits now %d %d\n",
 493                          (int)rlp.rlim_cur,(int)rlp.rlim_max));
 494         }
 495 #endif
 496 #endif
 497
 498
 499         DEBUG(0,("Dumping core in %s\n", dname));
 500         abort();
 501         return(True);
 502 }
 503 #endif
 504
 505 /****************************************************************************
 506 update the current smbd process count
 507 ****************************************************************************/
 508
 509 static void decrement_smbd_process_count(void)
 510 {
 511         int32 total_smbds;
 512
 513         if (lp_max_smbd_processes()) {
 514                 total_smbds = 0;
 515                 tdb_change_int32_atomic(conn_tdb_ctx(), "INFO/total_smbds", &total_smbds, -1);
 516         }
 517 }
 518
 519 /****************************************************************************
 520  Exit the server.
 521 ****************************************************************************/
 522
 523 void exit_server(char *reason)
 524 {
 525         static int firsttime=1;
 526         extern char *last_inbuf;
 527         extern struct auth_context *negprot_global_auth_context;
 528
 529         if (!firsttime)
 530                 exit(0);
 531         firsttime = 0;
 532
 533         change_to_root_user();
 534         DEBUG(2,("Closing connections\n"));
 535
 536         if (negprot_global_auth_context) {
 537                 (negprot_global_auth_context->free)(&negprot_global_auth_context);
 538         }
 539
 540         conn_close_all();
 541
 542         invalidate_all_vuids();
 543
 544         print_notify_send_messages();
 545
 546         /* delete our entry in the connections database. */
 547         yield_connection(NULL,"");
 548
 549         respond_to_all_remaining_local_messages();
 550         decrement_smbd_process_count();
 551
 552 #ifdef WITH_DFS
 553         if (dcelogin_atmost_once) {
 554                 dfs_unlogin();
 555         }
 556 #endif
 557
 558         if (!reason) {
 559                 int oldlevel = DEBUGLEVEL;
 560                 DEBUGLEVEL = 10;
 561                 DEBUG(0,("Last message was %s\n",smb_fn_name(last_message)));
 562                 if (last_inbuf)
 563                         show_msg(last_inbuf);
 564                 DEBUGLEVEL = oldlevel;
 565                 DEBUG(0,("===============================================================\n"));
 566 #if DUMP_CORE
 567                 if (dump_core()) return;
 568 #endif
 569         }
 570
 571         locking_end();
 572         printing_end();
 573
 574         DEBUG(3,("Server exit (%s)\n", (reason ? reason : "")));
 575         exit(0);
 576 }
 577
 578 /****************************************************************************
 579  Initialise connect, service and file structs.
 580 ****************************************************************************/
 581
 582 static BOOL init_structs(void )
 583 {
 584         /*
 585          * Set the machine NETBIOS name if not already
 586          * set from the config file.
 587          */
 588
 589         if (!init_names())
 590                 return False;
 591
 592         conn_init();
 593
 594         file_init();
 595
 596         /* for RPC pipes */
 597         init_rpc_pipe_hnd();
 598
 599         init_dptrs();
 600
 601         secrets_init();
 602
 603         return True;
 604 }
 605
 606 /****************************************************************************
 607  main program.
 608 ****************************************************************************/
 609
 610  int main(int argc,const char *argv[])
 611 {
 612         /* shall I run as a daemon */
 613         static BOOL is_daemon = False;
 614         static BOOL interactive = False;
 615         static char *ports = NULL;
 616         int opt;
 617         poptContext pc;
 618
 619         struct poptOption long_options[] = {
 620                 POPT_AUTOHELP
 621         {"daemon", 'D', POPT_ARG_VAL, &is_daemon, True, "Become a daemon (default)" },
 622         {"interactive", 'i', POPT_ARG_VAL, &interactive, True, "Run interactive (not a daemon)"},
 623         {"build-options", 'b', POPT_ARG_NONE, NULL, 'b', "Print build options" },
 624         {"port", 'p', POPT_ARG_STRING, &ports, 0, "Listen on the specified ports"},
 625         {NULL, 0, POPT_ARG_INCLUDE_TABLE, popt_common_debug},
 626         {NULL, 0, POPT_ARG_INCLUDE_TABLE, popt_common_configfile},
 627         {NULL, 0, POPT_ARG_INCLUDE_TABLE, popt_common_socket_options},
 628         {NULL, 0, POPT_ARG_INCLUDE_TABLE, popt_common_log_base},
 629         {NULL, 0, POPT_ARG_INCLUDE_TABLE, popt_common_version},
 630         { NULL }
 631         };
 632
 633 #ifdef HAVE_SET_AUTH_PARAMETERS
 634         set_auth_parameters(argc,argv);
 635 #endif
 636
 637         pc = poptGetContext("smbd", argc, argv, long_options, 0);
 638
 639         while((opt = poptGetNextOpt(pc)) != -1) {
 640                 switch (opt)  {
 641                 case 'b':
 642                         build_options(True); /* Display output to screen as well as debug */
 643                         exit(0);
 644                         break;
 645                 }
 646         }
 647
 648         poptFreeContext(pc);
 649
 650 #ifdef HAVE_SETLUID
 651         /* needed for SecureWare on SCO */
 652         setluid(0);
 653 #endif
 654
 655         sec_init();
 656
 657         load_case_tables();
 658
 659         set_remote_machine_name("smbd");
 660
 661         setup_logging(argv[0],interactive);
 662
 663         /* we want to re-seed early to prevent time delays causing
 664            client problems at a later date. (tridge) */
 665         generate_random_buffer(NULL, 0, False);
 666
 667         /* make absolutely sure we run as root - to handle cases where people
 668            are crazy enough to have it setuid */
 669
 670         gain_root_privilege();
 671         gain_root_group_privilege();
 672
 673         fault_setup((void (*)(void *))exit_server);
 674         CatchSignal(SIGTERM , SIGNAL_CAST sig_term);
 675         CatchSignal(SIGHUP,SIGNAL_CAST sig_hup);
 676
 677         /* we are never interested in SIGPIPE */
 678         BlockSignals(True,SIGPIPE);
 679
 680 #if defined(SIGFPE)
 681         /* we are never interested in SIGFPE */
 682         BlockSignals(True,SIGFPE);
 683 #endif
 684
 685 #if defined(SIGUSR2)
 686         /* We are no longer interested in USR2 */
 687         BlockSignals(True,SIGUSR2);
 688 #endif
 689
 690         /* POSIX demands that signals are inherited. If the invoking process has
 691          * these signals masked, we will have problems, as we won't recieve them. */
 692         BlockSignals(False, SIGHUP);
 693         BlockSignals(False, SIGUSR1);
 694         BlockSignals(False, SIGTERM);
 695
 696         /* we want total control over the permissions on created files,
 697            so set our umask to 0 */
 698         umask(0);
 699
 700         init_sec_ctx();
 701
 702         reopen_logs();
 703
 704         DEBUG(0,( "smbd version %s started.\n", VERSION));
 705         DEBUGADD(0,( "Copyright Andrew Tridgell and the Samba Team 1992-2002\n"));
 706
 707         DEBUG(2,("uid=%d gid=%d euid=%d egid=%d\n",
 708                  (int)getuid(),(int)getgid(),(int)geteuid(),(int)getegid()));
 709
 710         /* Output the build options to the debug log */
 711         build_options(False);
 712
 713         if (sizeof(uint16) < 2 || sizeof(uint32) < 4) {
 714                 DEBUG(0,("ERROR: Samba is not configured correctly for the word size on your machine\n"));
 715                 exit(1);
 716         }
 717
 718         /*
 719          * Do this before reload_services.
 720          */
 721
 722         if (!reload_services(False))
 723                 return(-1);
 724
 725         init_structs();
 726
 727 #ifdef WITH_PROFILE
 728         if (!profile_setup(False)) {
 729                 DEBUG(0,("ERROR: failed to setup profiling\n"));
 730                 return -1;
 731         }
 732 #endif
 733
 734         DEBUG(3,( "loaded services\n"));
 735
 736         if (!is_daemon && !is_a_socket(0)) {
 737                 if (!interactive)
 738                         DEBUG(0,("standard input is not a socket, assuming -D option\n"));
 739
 740                 /*
 741                  * Setting is_daemon here prevents us from eventually calling
 742                  * the open_sockets_inetd()
 743                  */
 744
 745                 is_daemon = True;
 746         }
 747
 748         if (is_daemon && !interactive) {
 749                 DEBUG( 3, ( "Becoming a daemon.\n" ) );
 750                 become_daemon();
 751         }
 752
 753 #if HAVE_SETPGID
 754         /*
 755          * If we're interactive we want to set our own process group for
 756          * signal management.
 757          */
 758         if (interactive)
 759                 setpgid( (pid_t)0, (pid_t)0);
 760 #endif
 761
 762         if (!directory_exist(lp_lockdir(), NULL)) {
 763                 mkdir(lp_lockdir(), 0755);
 764         }
 765
 766         if (is_daemon) {
 767                 pidfile_create("smbd");
 768         }
 769
 770         if (!message_init()) {
 771                 exit(1);
 772         }
 773         register_msg_pool_usage();
 774         register_dmalloc_msgs();
 775
 776         if (!print_backend_init())
 777                 exit(1);
 778
 779         /* Setup the main smbd so that we can get messages. */
 780         claim_connection(NULL,"",0,True,FLAG_MSG_GENERAL|FLAG_MSG_SMBD);
 781
 782         /*
 783            DO NOT ENABLE THIS TILL YOU COPE WITH KILLING THESE TASKS AND INETD
 784            THIS *killed* LOTS OF BUILD FARM MACHINES. IT CREATED HUNDREDS OF
 785            smbd PROCESSES THAT NEVER DIE
 786            start_background_queue();
 787         */
 788
 789         if (!open_sockets_smbd(is_daemon,ports))
 790                 exit(1);
 791
 792         /*
 793          * everything after this point is run after the fork()
 794          */
 795
 796         namecache_enable();
 797
 798         if (!locking_init(0))
 799                 exit(1);
 800
 801         if (!share_info_db_init())
 802                 exit(1);
 803
 804         if (!init_registry())
 805                 exit(1);
 806
 807         if(!initialize_password_db(False))
 808                 exit(1);
 809
 810         uni_group_cache_init(); /* Non-critical */
 811
 812         /* possibly reload the services file. */
 813         reload_services(True);
 814
 815         if(!get_global_sam_sid()) {
 816                 DEBUG(0,("ERROR: Samba cannot create a SAM SID.\n"));
 817                 exit(1);
 818         }
 819
 820         if (!init_account_policy()) {
 821                 DEBUG(0,("Could not open account policy tdb.\n"));
 822                 exit(1);
 823         }
 824
 825         if (*lp_rootdir()) {
 826                 if (sys_chroot(lp_rootdir()) == 0)
 827                         DEBUG(2,("Changed root to %s\n", lp_rootdir()));
 828         }
 829
 830         /* Setup oplocks */
 831         if (!init_oplocks())
 832                 exit(1);
 833
 834         /* Setup change notify */
 835         if (!init_change_notify())
 836                 exit(1);
 837
 838         /* re-initialise the timezone */
 839         TimeInit();
 840
 841         /* register our message handlers */
 842         message_register(MSG_SMB_FORCE_TDIS, msg_force_tdis);
 843         talloc_init_named("dummy!");
 844
 845         smbd_process();
 846
 847         uni_group_cache_shutdown();
 848         exit_server("normal exit");
 849         return(0);
 850 }