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_xstrdup(SMB_PORTS);
 183                 } else {
 184                         ports = smb_xstrdup(ports);
 185                 }
 186         } else {
 187                 ports = smb_xstrdup(smb_ports);
 188         }
 189
 190         if (lp_interfaces() && lp_bind_interfaces_only()) {
 191                 /* We have been given an interfaces line, and been
 192                    told to only bind to those interfaces. Create a
 193                    socket per interface and bind to only these.
 194                 */
 195
 196                 /* Now open a listen socket for each of the
 197                    interfaces. */
 198                 for(i = 0; i < num_interfaces; i++) {
 199                         struct in_addr *ifip = iface_n_ip(i);
 200                         fstring tok;
 201                         const char *ptr;
 202
 203                         if(ifip == NULL) {
 204                                 DEBUG(0,("open_sockets_smbd: interface %d has NULL IP address !\n", i));
 205                                 continue;
 206                         }
 207
 208                         for (ptr=ports; next_token(&ptr, tok, NULL, sizeof(tok)); ) {
 209                                 unsigned port = atoi(tok);
 210                                 if (port == 0) continue;
 211                                 s = fd_listenset[num_sockets] = open_socket_in(SOCK_STREAM, port, 0, ifip->s_addr, True);
 212                                 if(s == -1)
 213                                         return False;
 214
 215                                 /* ready to listen */
 216                                 set_socket_options(s,"SO_KEEPALIVE");
 217                                 set_socket_options(s,user_socket_options);
 218
 219                                 if (listen(s, 5) == -1) {
 220                                         DEBUG(0,("listen: %s\n",strerror(errno)));
 221                                         close(s);
 222                                         return False;
 223                                 }
 224                                 FD_SET(s,&listen_set);
 225
 226                                 num_sockets++;
 227                                 if (num_sockets >= FD_SETSIZE) {
 228                                         DEBUG(0,("open_sockets_smbd: Too many sockets to bind to\n"));
 229                                         return False;
 230                                 }
 231                         }
 232                 }
 233         } else {
 234                 /* Just bind to 0.0.0.0 - accept connections
 235                    from anywhere. */
 236
 237                 fstring tok;
 238                 const char *ptr;
 239
 240                 num_interfaces = 1;
 241
 242                 for (ptr=ports; next_token(&ptr, tok, NULL, sizeof(tok)); ) {
 243                         unsigned port = atoi(tok);
 244                         if (port == 0) continue;
 245                         /* open an incoming socket */
 246                         s = open_socket_in(SOCK_STREAM, port, 0,
 247                                            interpret_addr(lp_socket_address()),True);
 248                         if (s == -1)
 249                                 return(False);
 250
 251                         /* ready to listen */
 252                         set_socket_options(s,"SO_KEEPALIVE");
 253                         set_socket_options(s,user_socket_options);
 254
 255                         if (listen(s, 5) == -1) {
 256                                 DEBUG(0,("open_sockets_smbd: listen: %s\n",
 257                                          strerror(errno)));
 258                                 close(s);
 259                                 return False;
 260                         }
 261
 262                         fd_listenset[num_sockets] = s;
 263                         FD_SET(s,&listen_set);
 264
 265                         num_sockets++;
 266
 267                         if (num_sockets >= FD_SETSIZE) {
 268                                 DEBUG(0,("open_sockets_smbd: Too many sockets to bind to\n"));
 269                                 return False;
 270                         }
 271                 }
 272         }
 273
 274         SAFE_FREE(ports);
 275
 276         /* Listen to messages */
 277
 278         message_register(MSG_SMB_SAM_SYNC, msg_sam_sync);
 279         message_register(MSG_SMB_SAM_REPL, msg_sam_repl);
 280         message_register(MSG_SHUTDOWN, msg_exit_server);
 281
 282         /* now accept incoming connections - forking a new process
 283            for each incoming connection */
 284         DEBUG(2,("waiting for a connection\n"));
 285         while (1) {
 286                 fd_set lfds;
 287                 int num;
 288
 289                 /* Free up temporary memory from the main smbd. */
 290                 lp_talloc_free();
 291
 292                 /* Ensure we respond to PING and DEBUG messages from the main smbd. */
 293                 message_dispatch();
 294
 295                 memcpy((char *)&lfds, (char *)&listen_set,
 296                        sizeof(listen_set));
 297
 298                 num = sys_select(FD_SETSIZE,&lfds,NULL,NULL,NULL);
 299
 300                 if (num == -1 && errno == EINTR) {
 301                         if (got_sig_term) {
 302                                 exit_server("Caught TERM signal");
 303                         }
 304
 305                         /* check for sighup processing */
 306                         if (reload_after_sighup) {
 307                                 change_to_root_user();
 308                                 DEBUG(1,("Reloading services after SIGHUP\n"));
 309                                 reload_services(False);
 310                                 reload_after_sighup = 0;
 311                         }
 312
 313                         continue;
 314                 }
 315
 316                 /* check if we need to reload services */
 317                 check_reload(time(NULL));
 318
 319                 /* Find the sockets that are read-ready -
 320                    accept on these. */
 321                 for( ; num > 0; num--) {
 322                         struct sockaddr addr;
 323                         socklen_t in_addrlen = sizeof(addr);
 324
 325                         s = -1;
 326                         for(i = 0; i < num_sockets; i++) {
 327                                 if(FD_ISSET(fd_listenset[i],&lfds)) {
 328                                         s = fd_listenset[i];
 329                                         /* Clear this so we don't look
 330                                            at it again. */
 331                                         FD_CLR(fd_listenset[i],&lfds);
 332                                         break;
 333                                 }
 334                         }
 335
 336                         smbd_set_server_fd(accept(s,&addr,&in_addrlen));
 337
 338                         if (smbd_server_fd() == -1 && errno == EINTR)
 339                                 continue;
 340
 341                         if (smbd_server_fd() == -1) {
 342                                 DEBUG(0,("open_sockets_smbd: accept: %s\n",
 343                                          strerror(errno)));
 344                                 continue;
 345                         }
 346
 347                         if (smbd_server_fd() != -1 && sys_fork()==0) {
 348                                 /* Child code ... */
 349
 350                                 /* close the listening socket(s) */
 351                                 for(i = 0; i < num_sockets; i++)
 352                                         close(fd_listenset[i]);
 353
 354                                 /* close our standard file
 355                                    descriptors */
 356                                 close_low_fds(False);
 357                                 am_parent = 0;
 358
 359                                 set_socket_options(smbd_server_fd(),"SO_KEEPALIVE");
 360                                 set_socket_options(smbd_server_fd(),user_socket_options);
 361
 362                                 /* this is needed so that we get decent entries
 363                                    in smbstatus for port 445 connects */
 364                                 set_remote_machine_name(get_socket_addr(smbd_server_fd()));
 365
 366                                 /* Reset global variables in util.c so
 367                                    that client substitutions will be
 368                                    done correctly in the process.  */
 369                                 reset_globals_after_fork();
 370
 371                                 /* tdb needs special fork handling */
 372                                 if (tdb_reopen_all() == -1) {
 373                                         DEBUG(0,("tdb_reopen_all failed.\n"));
 374                                         return False;
 375                                 }
 376
 377                                 /* Load DSO's */
 378                                 if(lp_modules())
 379                                         smb_load_modules(lp_modules());
 380
 381                                 return True;
 382                         }
 383                         /* The parent doesn't need this socket */
 384                         close(smbd_server_fd());
 385
 386                         /* Sun May 6 18:56:14 2001 ackley@cs.unm.edu:
 387                                 Clear the closed fd info out of server_fd --
 388                                 and more importantly, out of client_fd in
 389                                 util_sock.c, to avoid a possible
 390                                 getpeername failure if we reopen the logs
 391                                 and use %I in the filename.
 392                         */
 393
 394                         smbd_set_server_fd(-1);
 395
 396                         /* Force parent to check log size after
 397                          * spawning child.  Fix from
 398                          * klausr@ITAP.Physik.Uni-Stuttgart.De.  The
 399                          * parent smbd will log to logserver.smb.  It
 400                          * writes only two messages for each child
 401                          * started/finished. But each child writes,
 402                          * say, 50 messages also in logserver.smb,
 403                          * begining with the debug_count of the
 404                          * parent, before the child opens its own log
 405                          * file logserver.client. In a worst case
 406                          * scenario the size of logserver.smb would be
 407                          * checked after about 50*50=2500 messages
 408                          * (ca. 100kb).
 409                          * */
 410                         force_check_log_size();
 411
 412                 } /* end for num */
 413         } /* end while 1 */
 414
 415 /* NOTREACHED   return True; */
 416 }
 417
 418 /****************************************************************************
 419  Reload the services file.
 420 **************************************************************************/
 421
 422 BOOL reload_services(BOOL test)
 423 {
 424         BOOL ret;
 425
 426         if (lp_loaded()) {
 427                 pstring fname;
 428                 pstrcpy(fname,lp_configfile());
 429                 if (file_exist(fname, NULL) &&
 430                     !strcsequal(fname, dyn_CONFIGFILE)) {
 431                         pstrcpy(dyn_CONFIGFILE, fname);
 432                         test = False;
 433                 }
 434         }
 435
 436         reopen_logs();
 437
 438         if (test && !lp_file_list_changed())
 439                 return(True);
 440
 441         lp_killunused(conn_snum_used);
 442
 443         ret = lp_load(dyn_CONFIGFILE, False, False, True);
 444
 445         load_printers();
 446
 447         /* perhaps the config filename is now set */
 448         if (!test)
 449                 reload_services(True);
 450
 451         reopen_logs();
 452
 453         load_interfaces();
 454
 455         {
 456                 if (smbd_server_fd() != -1) {
 457                         set_socket_options(smbd_server_fd(),"SO_KEEPALIVE");
 458                         set_socket_options(smbd_server_fd(), user_socket_options);
 459                 }
 460         }
 461
 462         mangle_reset_cache();
 463         reset_stat_cache();
 464
 465         /* this forces service parameters to be flushed */
 466         set_current_service(NULL,True);
 467
 468         return(ret);
 469 }
 470
 471 /*******************************************************************
 472  Print out all talloc memory info.
 473 ********************************************************************/
 474
 475 void return_all_talloc_info(int msg_type, pid_t src_pid, void *buf, size_t len)
 476 {
 477         TALLOC_CTX *ctx = talloc_init("info context");
 478         char *info = NULL;
 479
 480         if (!ctx)
 481                 return;
 482
 483         info = talloc_describe_all(ctx);
 484         if (info)
 485                 DEBUG(10,(info));
 486         message_send_pid(src_pid, MSG_TALLOC_USAGE, info, info ? strlen(info) + 1 : 0, True);
 487         talloc_destroy(ctx);
 488 }
 489
 490 #if DUMP_CORE
 491 /*******************************************************************
 492 prepare to dump a core file - carefully!
 493 ********************************************************************/
 494 static BOOL dump_core(void)
 495 {
 496         char *p;
 497         pstring dname;
 498
 499         pstrcpy(dname,lp_logfile());
 500         if ((p=strrchr_m(dname,'/'))) *p=0;
 501         pstrcat(dname,"/corefiles");
 502         mkdir(dname,0700);
 503         sys_chown(dname,getuid(),getgid());
 504         chmod(dname,0700);
 505         if (chdir(dname)) return(False);
 506         umask(~(0700));
 507
 508 #ifdef HAVE_GETRLIMIT
 509 #ifdef RLIMIT_CORE
 510         {
 511                 struct rlimit rlp;
 512                 getrlimit(RLIMIT_CORE, &rlp);
 513                 rlp.rlim_cur = MAX(4*1024*1024,rlp.rlim_cur);
 514                 setrlimit(RLIMIT_CORE, &rlp);
 515                 getrlimit(RLIMIT_CORE, &rlp);
 516                 DEBUG(3,("Core limits now %d %d\n",
 517                          (int)rlp.rlim_cur,(int)rlp.rlim_max));
 518         }
 519 #endif
 520 #endif
 521
 522
 523         DEBUG(0,("Dumping core in %s\n", dname));
 524         abort();
 525         return(True);
 526 }
 527 #endif
 528
 529 /****************************************************************************
 530 update the current smbd process count
 531 ****************************************************************************/
 532
 533 static void decrement_smbd_process_count(void)
 534 {
 535         int32 total_smbds;
 536
 537         if (lp_max_smbd_processes()) {
 538                 total_smbds = 0;
 539                 tdb_change_int32_atomic(conn_tdb_ctx(), "INFO/total_smbds", &total_smbds, -1);
 540         }
 541 }
 542
 543 /****************************************************************************
 544  Exit the server.
 545 ****************************************************************************/
 546
 547 void exit_server(const char *reason)
 548 {
 549         static int firsttime=1;
 550         extern char *last_inbuf;
 551         extern struct auth_context *negprot_global_auth_context;
 552
 553         if (!firsttime)
 554                 exit(0);
 555         firsttime = 0;
 556
 557         change_to_root_user();
 558         DEBUG(2,("Closing connections\n"));
 559
 560         if (negprot_global_auth_context) {
 561                 (negprot_global_auth_context->free)(&negprot_global_auth_context);
 562         }
 563
 564         conn_close_all();
 565
 566         invalidate_all_vuids();
 567
 568         print_notify_send_messages();
 569
 570         /* delete our entry in the connections database. */
 571         yield_connection(NULL,"");
 572
 573         respond_to_all_remaining_local_messages();
 574         decrement_smbd_process_count();
 575
 576 #ifdef WITH_DFS
 577         if (dcelogin_atmost_once) {
 578                 dfs_unlogin();
 579         }
 580 #endif
 581
 582         if (!reason) {
 583                 int oldlevel = DEBUGLEVEL;
 584                 DEBUGLEVEL = 10;
 585                 DEBUG(0,("Last message was %s\n",smb_fn_name(last_message)));
 586                 if (last_inbuf)
 587                         show_msg(last_inbuf);
 588                 DEBUGLEVEL = oldlevel;
 589                 DEBUG(0,("===============================================================\n"));
 590 #if DUMP_CORE
 591                 if (dump_core()) return;
 592 #endif
 593         }
 594
 595         locking_end();
 596         printing_end();
 597
 598         DEBUG(3,("Server exit (%s)\n", (reason ? reason : "")));
 599         exit(0);
 600 }
 601
 602 /****************************************************************************
 603  Initialise connect, service and file structs.
 604 ****************************************************************************/
 605
 606 static BOOL init_structs(void )
 607 {
 608         /*
 609          * Set the machine NETBIOS name if not already
 610          * set from the config file.
 611          */
 612
 613         if (!init_names())
 614                 return False;
 615
 616         conn_init();
 617
 618         file_init();
 619
 620         /* for RPC pipes */
 621         init_rpc_pipe_hnd();
 622
 623         init_dptrs();
 624
 625         secrets_init();
 626
 627         return True;
 628 }
 629
 630 /****************************************************************************
 631  main program.
 632 ****************************************************************************/
 633
 634  int main(int argc,const char *argv[])
 635 {
 636         /* shall I run as a daemon */
 637         static BOOL is_daemon = False;
 638         static BOOL interactive = False;
 639         static BOOL Fork = True;
 640         static BOOL log_stdout = False;
 641         static char *ports = NULL;
 642         int opt;
 643         poptContext pc;
 644
 645         struct poptOption long_options[] = {
 646                 POPT_AUTOHELP
 647         {"daemon", 'D', POPT_ARG_VAL, &is_daemon, True, "Become a daemon (default)" },
 648         {"interactive", 'i', POPT_ARG_VAL, &interactive, True, "Run interactive (not a daemon)"},
 649         {"foreground", 'F', POPT_ARG_VAL, &Fork, False, "Run daemon in foreground (for daemontools & etc)" },
 650         {"log-stdout", 'S', POPT_ARG_VAL, &log_stdout, True, "Log to stdout" },
 651         {"build-options", 'b', POPT_ARG_NONE, NULL, 'b', "Print build options" },
 652         {"port", 'p', POPT_ARG_STRING, &ports, 0, "Listen on the specified ports"},
 653         {NULL, 0, POPT_ARG_INCLUDE_TABLE, popt_common_debug},
 654         {NULL, 0, POPT_ARG_INCLUDE_TABLE, popt_common_configfile},
 655         {NULL, 0, POPT_ARG_INCLUDE_TABLE, popt_common_socket_options},
 656         {NULL, 0, POPT_ARG_INCLUDE_TABLE, popt_common_log_base},
 657         {NULL, 0, POPT_ARG_INCLUDE_TABLE, popt_common_version},
 658         { NULL }
 659         };
 660
 661 #ifdef HAVE_SET_AUTH_PARAMETERS
 662         set_auth_parameters(argc,argv);
 663 #endif
 664
 665         pc = poptGetContext("smbd", argc, argv, long_options, 0);
 666
 667         while((opt = poptGetNextOpt(pc)) != -1) {
 668                 switch (opt)  {
 669                 case 'b':
 670                         build_options(True); /* Display output to screen as well as debug */
 671                         exit(0);
 672                         break;
 673                 }
 674         }
 675
 676         poptFreeContext(pc);
 677
 678 #ifdef HAVE_SETLUID
 679         /* needed for SecureWare on SCO */
 680         setluid(0);
 681 #endif
 682
 683         sec_init();
 684
 685         load_case_tables();
 686
 687         set_remote_machine_name("smbd");
 688
 689         if (interactive) {
 690                 Fork = False;
 691                 log_stdout = True;
 692         }
 693
 694         if (log_stdout && Fork) {
 695                 DEBUG(0,("ERROR: Can't log to stdout (-S) unless daemon is in foreground (-F) or interactive (-i)\n"));
 696                 exit(1);
 697         }
 698
 699         setup_logging(argv[0],log_stdout);
 700
 701         /* we want to re-seed early to prevent time delays causing
 702            client problems at a later date. (tridge) */
 703         generate_random_buffer(NULL, 0, False);
 704
 705         /* make absolutely sure we run as root - to handle cases where people
 706            are crazy enough to have it setuid */
 707
 708         gain_root_privilege();
 709         gain_root_group_privilege();
 710
 711         fault_setup((void (*)(void *))exit_server);
 712         CatchSignal(SIGTERM , SIGNAL_CAST sig_term);
 713         CatchSignal(SIGHUP,SIGNAL_CAST sig_hup);
 714
 715         /* we are never interested in SIGPIPE */
 716         BlockSignals(True,SIGPIPE);
 717
 718 #if defined(SIGFPE)
 719         /* we are never interested in SIGFPE */
 720         BlockSignals(True,SIGFPE);
 721 #endif
 722
 723 #if defined(SIGUSR2)
 724         /* We are no longer interested in USR2 */
 725         BlockSignals(True,SIGUSR2);
 726 #endif
 727
 728         /* POSIX demands that signals are inherited. If the invoking process has
 729          * these signals masked, we will have problems, as we won't recieve them. */
 730         BlockSignals(False, SIGHUP);
 731         BlockSignals(False, SIGUSR1);
 732         BlockSignals(False, SIGTERM);
 733
 734         /* we want total control over the permissions on created files,
 735            so set our umask to 0 */
 736         umask(0);
 737
 738         init_sec_ctx();
 739
 740         reopen_logs();
 741
 742         DEBUG(0,( "smbd version %s started.\n", VERSION));
 743         DEBUGADD(0,( "Copyright Andrew Tridgell and the Samba Team 1992-2002\n"));
 744
 745         DEBUG(2,("uid=%d gid=%d euid=%d egid=%d\n",
 746                  (int)getuid(),(int)getgid(),(int)geteuid(),(int)getegid()));
 747
 748         /* Output the build options to the debug log */
 749         build_options(False);
 750
 751         if (sizeof(uint16) < 2 || sizeof(uint32) < 4) {
 752                 DEBUG(0,("ERROR: Samba is not configured correctly for the word size on your machine\n"));
 753                 exit(1);
 754         }
 755
 756         /*
 757          * Do this before reload_services.
 758          */
 759
 760         if (!reload_services(False))
 761                 return(-1);
 762
 763         init_structs();
 764
 765 #ifdef WITH_PROFILE
 766         if (!profile_setup(False)) {
 767                 DEBUG(0,("ERROR: failed to setup profiling\n"));
 768                 return -1;
 769         }
 770 #endif
 771
 772         DEBUG(3,( "loaded services\n"));
 773
 774         if (!is_daemon && !is_a_socket(0)) {
 775                 if (!interactive)
 776                         DEBUG(0,("standard input is not a socket, assuming -D option\n"));
 777
 778                 /*
 779                  * Setting is_daemon here prevents us from eventually calling
 780                  * the open_sockets_inetd()
 781                  */
 782
 783                 is_daemon = True;
 784         }
 785
 786         if (is_daemon && !interactive) {
 787                 DEBUG( 3, ( "Becoming a daemon.\n" ) );
 788                 become_daemon(Fork);
 789         }
 790
 791 #if HAVE_SETPGID
 792         /*
 793          * If we're interactive we want to set our own process group for
 794          * signal management.
 795          */
 796         if (interactive)
 797                 setpgid( (pid_t)0, (pid_t)0);
 798 #endif
 799
 800         if (!directory_exist(lp_lockdir(), NULL))
 801                 mkdir(lp_lockdir(), 0755);
 802
 803         if (is_daemon)
 804                 pidfile_create("smbd");
 805
 806         if (!message_init())
 807                 exit(1);
 808
 809         register_msg_pool_usage();
 810         register_dmalloc_msgs();
 811         message_register(MSG_REQ_TALLOC_USAGE, return_all_talloc_info);
 812
 813         if (!print_backend_init())
 814                 exit(1);
 815
 816         /* Setup the main smbd so that we can get messages. */
 817         claim_connection(NULL,"",0,True,FLAG_MSG_GENERAL|FLAG_MSG_SMBD);
 818
 819         /*
 820            DO NOT ENABLE THIS TILL YOU COPE WITH KILLING THESE TASKS AND INETD
 821            THIS *killed* LOTS OF BUILD FARM MACHINES. IT CREATED HUNDREDS OF
 822            smbd PROCESSES THAT NEVER DIE
 823            start_background_queue();
 824         */
 825
 826         if (!open_sockets_smbd(is_daemon,ports))
 827                 exit(1);
 828
 829         /*
 830          * everything after this point is run after the fork()
 831          */
 832
 833         namecache_enable();
 834
 835         if (!locking_init(0))
 836                 exit(1);
 837
 838         if (!share_info_db_init())
 839                 exit(1);
 840
 841         if (!init_registry())
 842                 exit(1);
 843
 844         if(!initialize_password_db(False))
 845                 exit(1);
 846
 847         uni_group_cache_init(); /* Non-critical */
 848
 849         /* possibly reload the services file. */
 850         reload_services(True);
 851
 852         if(!get_global_sam_sid()) {
 853                 DEBUG(0,("ERROR: Samba cannot create a SAM SID.\n"));
 854                 exit(1);
 855         }
 856
 857         if (!init_account_policy()) {
 858                 DEBUG(0,("Could not open account policy tdb.\n"));
 859                 exit(1);
 860         }
 861
 862         if (*lp_rootdir()) {
 863                 if (sys_chroot(lp_rootdir()) == 0)
 864                         DEBUG(2,("Changed root to %s\n", lp_rootdir()));
 865         }
 866
 867         /* Setup oplocks */
 868         if (!init_oplocks())
 869                 exit(1);
 870
 871         /* Setup change notify */
 872         if (!init_change_notify())
 873                 exit(1);
 874
 875         /* re-initialise the timezone */
 876         TimeInit();
 877
 878         /* register our message handlers */
 879         message_register(MSG_SMB_FORCE_TDIS, msg_force_tdis);
 880
 881         smbd_process();
 882
 883         uni_group_cache_shutdown();
 884         namecache_shutdown();
 885         exit_server("normal exit");
 886         return(0);
 887 }