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 extern fstring global_myworkgroup;
  25 extern pstring global_myname;
  26
  27 int am_parent = 1;
  28
  29 /* the last message the was processed */
  30 int last_message = -1;
  31
  32 /* a useful macro to debug the last message processed */
  33 #define LAST_MESSAGE() smb_fn_name(last_message)
  34
  35 extern pstring user_socket_options;
  36
  37 #ifdef WITH_DFS
  38 extern int dcelogin_atmost_once;
  39 #endif /* WITH_DFS */
  40
  41 extern fstring remote_machine;
  42
  43 /* really we should have a top level context structure that has the
  44    client file descriptor as an element. That would require a major rewrite :(
  45
  46    the following 2 functions are an alternative - they make the file
  47    descriptor private to smbd
  48  */
  49 static int server_fd = -1;
  50
  51 int smbd_server_fd(void)
  52 {
  53         return server_fd;
  54 }
  55
  56 void smbd_set_server_fd(int fd)
  57 {
  58         server_fd = fd;
  59         client_setfd(fd);
  60 }
  61
  62 /****************************************************************************
  63   when exiting, take the whole family
  64 ****************************************************************************/
  65 static void *dflt_sig(void)
  66 {
  67         exit_server("caught signal");
  68         return NULL;
  69 }
  70
  71 /****************************************************************************
  72   Send a SIGTERM to our process group.
  73 *****************************************************************************/
  74 static void  killkids(void)
  75 {
  76         if(am_parent) kill(0,SIGTERM);
  77 }
  78
  79 /****************************************************************************
  80   process a sam sync message - not sure whether to do this here or
  81   somewhere else
  82 ****************************************************************************/
  83 static void msg_sam_sync(int msg_type, pid_t pid, void *buf, size_t len)
  84 {
  85         DEBUG(10, ("** sam sync message received, ignoring\n"));
  86 }
  87
  88 /****************************************************************************
  89   process a sam sync replicate message - not sure whether to do this here or
  90   somewhere else
  91 ****************************************************************************/
  92 static void msg_sam_repl(int msg_type, pid_t pid, void *buf, size_t len)
  93 {
  94         uint32 low_serial;
  95
  96         if (len != sizeof(uint32))
  97                 return;
  98
  99         low_serial = *((uint32 *)buf);
 100
 101         DEBUG(3, ("received sam replication message, serial = 0x%04x\n",
 102                   low_serial));
 103 }
 104
 105 /****************************************************************************
 106   open the socket communication
 107 ****************************************************************************/
 108 static BOOL open_sockets_inetd(void)
 109 {
 110         /* Started from inetd. fd 0 is the socket. */
 111         /* We will abort gracefully when the client or remote system
 112            goes away */
 113         smbd_set_server_fd(dup(0));
 114
 115         /* close our standard file descriptors */
 116         close_low_fds();
 117
 118         set_socket_options(smbd_server_fd(),"SO_KEEPALIVE");
 119         set_socket_options(smbd_server_fd(),user_socket_options);
 120
 121         return True;
 122 }
 123
 124
 125 /****************************************************************************
 126   open the socket communication
 127 ****************************************************************************/
 128 static BOOL open_sockets(BOOL is_daemon,int port)
 129 {
 130         int num_interfaces = iface_count();
 131         int fd_listenset[FD_SETSIZE];
 132         fd_set listen_set;
 133         int s;
 134         int i;
 135
 136         if (!is_daemon) {
 137                 return open_sockets_inetd();
 138         }
 139
 140
 141 #ifdef HAVE_ATEXIT
 142         {
 143                 static int atexit_set;
 144                 if(atexit_set == 0) {
 145                         atexit_set=1;
 146                         atexit(killkids);
 147                 }
 148         }
 149 #endif
 150
 151         /* Stop zombies */
 152         CatchChild();
 153
 154
 155         FD_ZERO(&listen_set);
 156
 157         if(lp_interfaces() && lp_bind_interfaces_only()) {
 158                 /* We have been given an interfaces line, and been
 159                    told to only bind to those interfaces. Create a
 160                    socket per interface and bind to only these.
 161                 */
 162
 163                 if(num_interfaces > FD_SETSIZE) {
 164                         DEBUG(0,("open_sockets: Too many interfaces specified to bind to. Number was %d \
 165 max can be %d\n",
 166                                  num_interfaces, FD_SETSIZE));
 167                         return False;
 168                 }
 169
 170                 /* Now open a listen socket for each of the
 171                    interfaces. */
 172                 for(i = 0; i < num_interfaces; i++) {
 173                         struct in_addr *ifip = iface_n_ip(i);
 174
 175                         if(ifip == NULL) {
 176                                 DEBUG(0,("open_sockets: interface %d has NULL IP address !\n", i));
 177                                 continue;
 178                         }
 179                         s = fd_listenset[i] = open_socket_in(SOCK_STREAM, port, 0, ifip->s_addr, True);
 180                         if(s == -1)
 181                                 return False;
 182
 183                         /* ready to listen */
 184                         set_socket_options(s,"SO_KEEPALIVE");
 185                         set_socket_options(s,user_socket_options);
 186
 187                         if (listen(s, 5) == -1) {
 188                                 DEBUG(0,("listen: %s\n",strerror(errno)));
 189                                 close(s);
 190                                 return False;
 191                         }
 192                         FD_SET(s,&listen_set);
 193                 }
 194         } else {
 195                 /* Just bind to 0.0.0.0 - accept connections
 196                    from anywhere. */
 197                 num_interfaces = 1;
 198
 199                 /* open an incoming socket */
 200                 s = open_socket_in(SOCK_STREAM, port, 0,
 201                                    interpret_addr(lp_socket_address()),True);
 202                 if (s == -1)
 203                         return(False);
 204
 205                 /* ready to listen */
 206                 set_socket_options(s,"SO_KEEPALIVE");
 207                 set_socket_options(s,user_socket_options);
 208
 209                 if (listen(s, 5) == -1) {
 210                         DEBUG(0,("open_sockets: listen: %s\n",
 211                                  strerror(errno)));
 212                         close(s);
 213                         return False;
 214                 }
 215
 216                 fd_listenset[0] = s;
 217                 FD_SET(s,&listen_set);
 218         }
 219
 220         /* Listen to messages */
 221
 222         message_register(MSG_SMB_SAM_SYNC, msg_sam_sync);
 223         message_register(MSG_SMB_SAM_REPL, msg_sam_repl);
 224
 225         /* now accept incoming connections - forking a new process
 226            for each incoming connection */
 227         DEBUG(2,("waiting for a connection\n"));
 228         while (1) {
 229                 fd_set lfds;
 230                 int num;
 231
 232                 /* Free up temporary memory from the main smbd. */
 233                 lp_talloc_free();
 234
 235                 /* Ensure we respond to PING and DEBUG messages from the main smbd. */
 236                 message_dispatch();
 237
 238                 memcpy((char *)&lfds, (char *)&listen_set,
 239                        sizeof(listen_set));
 240
 241                 num = sys_select(FD_SETSIZE,&lfds,NULL);
 242
 243                 if (num == -1 && errno == EINTR) {
 244                         extern VOLATILE sig_atomic_t reload_after_sighup;
 245
 246                         /* check for sighup processing */
 247                         if (reload_after_sighup) {
 248                                 change_to_root_user();
 249                                 DEBUG(1,("Reloading services after SIGHUP\n"));
 250                                 reload_services(False);
 251                                 reload_after_sighup = False;
 252                         }
 253
 254                         continue;
 255                 }
 256
 257                 /* check if we need to reload services */
 258                 check_reload(time(NULL));
 259
 260                 /* Find the sockets that are read-ready -
 261                    accept on these. */
 262                 for( ; num > 0; num--) {
 263                         struct sockaddr addr;
 264                         socklen_t in_addrlen = sizeof(addr);
 265
 266                         s = -1;
 267                         for(i = 0; i < num_interfaces; i++) {
 268                                 if(FD_ISSET(fd_listenset[i],&lfds)) {
 269                                         s = fd_listenset[i];
 270                                         /* Clear this so we don't look
 271                                            at it again. */
 272                                         FD_CLR(fd_listenset[i],&lfds);
 273                                         break;
 274                                 }
 275                         }
 276
 277                         smbd_set_server_fd(accept(s,&addr,&in_addrlen));
 278
 279                         if (smbd_server_fd() == -1 && errno == EINTR)
 280                                 continue;
 281
 282                         if (smbd_server_fd() == -1) {
 283                                 DEBUG(0,("open_sockets: accept: %s\n",
 284                                          strerror(errno)));
 285                                 continue;
 286                         }
 287
 288                         if (smbd_server_fd() != -1 && sys_fork()==0) {
 289                                 /* Child code ... */
 290
 291                                 /* close the listening socket(s) */
 292                                 for(i = 0; i < num_interfaces; i++)
 293                                         close(fd_listenset[i]);
 294
 295                                 /* close our standard file
 296                                    descriptors */
 297                                 close_low_fds();
 298                                 am_parent = 0;
 299
 300                                 set_socket_options(smbd_server_fd(),"SO_KEEPALIVE");
 301                                 set_socket_options(smbd_server_fd(),user_socket_options);
 302
 303                                 /* Reset global variables in util.c so
 304                                    that client substitutions will be
 305                                    done correctly in the process.  */
 306                                 reset_globals_after_fork();
 307
 308                                 /* tdb needs special fork handling */
 309                                 tdb_reopen_all();
 310
 311                                 return True;
 312                         }
 313                         /* The parent doesn't need this socket */
 314                         close(smbd_server_fd());
 315
 316                         /* Sun May 6 18:56:14 2001 ackley@cs.unm.edu:
 317                                 Clear the closed fd info out of server_fd --
 318                                 and more importantly, out of client_fd in
 319                                 util_sock.c, to avoid a possible
 320                                 getpeername failure if we reopen the logs
 321                                 and use %I in the filename.
 322                         */
 323
 324                         smbd_set_server_fd(-1);
 325
 326                         /* Force parent to check log size after
 327                          * spawning child.  Fix from
 328                          * klausr@ITAP.Physik.Uni-Stuttgart.De.  The
 329                          * parent smbd will log to logserver.smb.  It
 330                          * writes only two messages for each child
 331                          * started/finished. But each child writes,
 332                          * say, 50 messages also in logserver.smb,
 333                          * begining with the debug_count of the
 334                          * parent, before the child opens its own log
 335                          * file logserver.client. In a worst case
 336                          * scenario the size of logserver.smb would be
 337                          * checked after about 50*50=2500 messages
 338                          * (ca. 100kb).
 339                          * */
 340                         force_check_log_size();
 341
 342                 } /* end for num */
 343         } /* end while 1 */
 344
 345 /* NOTREACHED   return True; */
 346 }
 347
 348 /****************************************************************************
 349   reload the services file
 350   **************************************************************************/
 351 BOOL reload_services(BOOL test)
 352 {
 353         BOOL ret;
 354
 355         if (lp_loaded()) {
 356                 pstring fname;
 357                 pstrcpy(fname,lp_configfile());
 358                 if (file_exist(fname,NULL) && !strcsequal(fname,dyn_CONFIGFILE)) {
 359                         pstrcpy(dyn_CONFIGFILE,fname);
 360                         test = False;
 361                 }
 362         }
 363
 364         reopen_logs();
 365
 366         if (test && !lp_file_list_changed())
 367                 return(True);
 368
 369         lp_killunused(conn_snum_used);
 370
 371         ret = lp_load(dyn_CONFIGFILE,False,False,True);
 372
 373         load_printers();
 374
 375         /* perhaps the config filename is now set */
 376         if (!test)
 377                 reload_services(True);
 378
 379         reopen_logs();
 380
 381         load_interfaces();
 382
 383         {
 384                 if (smbd_server_fd() != -1) {
 385                         set_socket_options(smbd_server_fd(),"SO_KEEPALIVE");
 386                         set_socket_options(smbd_server_fd(),user_socket_options);
 387                 }
 388         }
 389
 390         reset_mangled_cache();
 391         reset_stat_cache();
 392
 393         /* this forces service parameters to be flushed */
 394         set_current_service(NULL,True);
 395
 396         return(ret);
 397 }
 398
 399
 400
 401 /****************************************************************************
 402  Catch a sighup.
 403 ****************************************************************************/
 404
 405 VOLATILE sig_atomic_t reload_after_sighup = False;
 406
 407 static void sig_hup(int sig)
 408 {
 409         BlockSignals(True,SIGHUP);
 410         DEBUG(0,("Got SIGHUP\n"));
 411
 412         sys_select_signal();
 413         reload_after_sighup = True;
 414         BlockSignals(False,SIGHUP);
 415 }
 416
 417
 418
 419 #if DUMP_CORE
 420 /*******************************************************************
 421 prepare to dump a core file - carefully!
 422 ********************************************************************/
 423 static BOOL dump_core(void)
 424 {
 425         char *p;
 426         pstring dname;
 427         pstrcpy(dname,lp_logfile());
 428         if ((p=strrchr_m(dname,'/'))) *p=0;
 429         pstrcat(dname,"/corefiles");
 430         mkdir(dname,0700);
 431         sys_chown(dname,getuid(),getgid());
 432         chmod(dname,0700);
 433         if (chdir(dname)) return(False);
 434         umask(~(0700));
 435
 436 #ifdef HAVE_GETRLIMIT
 437 #ifdef RLIMIT_CORE
 438         {
 439                 struct rlimit rlp;
 440                 getrlimit(RLIMIT_CORE, &rlp);
 441                 rlp.rlim_cur = MAX(4*1024*1024,rlp.rlim_cur);
 442                 setrlimit(RLIMIT_CORE, &rlp);
 443                 getrlimit(RLIMIT_CORE, &rlp);
 444                 DEBUG(3,("Core limits now %d %d\n",
 445                          (int)rlp.rlim_cur,(int)rlp.rlim_max));
 446         }
 447 #endif
 448 #endif
 449
 450
 451         DEBUG(0,("Dumping core in %s\n",dname));
 452         abort();
 453         return(True);
 454 }
 455 #endif
 456
 457 /****************************************************************************
 458 update the current smbd process count
 459 ****************************************************************************/
 460
 461 static void decrement_smbd_process_count(void)
 462 {
 463         int total_smbds;
 464
 465         if (lp_max_smbd_processes()) {
 466                 total_smbds = 0;
 467                 tdb_change_int_atomic(conn_tdb_ctx(), "INFO/total_smbds", &total_smbds, -1);
 468         }
 469 }
 470
 471 /****************************************************************************
 472 exit the server
 473 ****************************************************************************/
 474 void exit_server(char *reason)
 475 {
 476         static int firsttime=1;
 477         extern char *last_inbuf;
 478         extern struct auth_context *negprot_global_auth_context;
 479
 480         if (!firsttime)
 481                 exit(0);
 482         firsttime = 0;
 483
 484         change_to_root_user();
 485         DEBUG(2,("Closing connections\n"));
 486
 487         if (negprot_global_auth_context) {
 488                 negprot_global_auth_context->free(&negprot_global_auth_context);
 489         }
 490
 491         conn_close_all();
 492
 493         invalidate_all_vuids();
 494
 495         /* delete our entry in the connections database. */
 496         yield_connection(NULL,"",MAXSTATUS);
 497
 498         respond_to_all_remaining_local_messages();
 499         decrement_smbd_process_count();
 500
 501 #ifdef WITH_DFS
 502         if (dcelogin_atmost_once) {
 503                 dfs_unlogin();
 504         }
 505 #endif
 506
 507         if (!reason) {
 508                 int oldlevel = DEBUGLEVEL;
 509                 DEBUGLEVEL = 10;
 510                 DEBUG(0,("Last message was %s\n",smb_fn_name(last_message)));
 511                 if (last_inbuf)
 512                         show_msg(last_inbuf);
 513                 DEBUGLEVEL = oldlevel;
 514                 DEBUG(0,("===============================================================\n"));
 515 #if DUMP_CORE
 516                 if (dump_core()) return;
 517 #endif
 518         }
 519
 520         locking_end();
 521
 522         DEBUG(3,("Server exit (%s)\n", (reason ? reason : "")));
 523         exit(0);
 524 }
 525
 526 /****************************************************************************
 527   initialise connect, service and file structs
 528 ****************************************************************************/
 529 static void init_structs(void )
 530 {
 531         /*
 532          * Set the machine NETBIOS name if not already
 533          * set from the config file.
 534          */
 535
 536         if (!*global_myname) {
 537                 char *p;
 538                 fstrcpy( global_myname, myhostname() );
 539                 p = strchr_m( global_myname, '.' );
 540                 if (p)
 541                         *p = 0;
 542         }
 543
 544         strupper( global_myname );
 545
 546         conn_init();
 547
 548         file_init();
 549
 550         /* for RPC pipes */
 551         init_rpc_pipe_hnd();
 552
 553         init_dptrs();
 554
 555         secrets_init();
 556 }
 557
 558 /****************************************************************************
 559 usage on the program
 560 ****************************************************************************/
 561 static void usage(char *pname)
 562 {
 563
 564         d_printf("Usage: %s [-DaioPh?Vb] [-d debuglevel] [-l log basename] [-p port]\n", pname);
 565         d_printf("       [-O socket options] [-s services file]\n");
 566         d_printf("\t-D                    Become a daemon (default)\n");
 567         d_printf("\t-a                    Append to log file (default)\n");
 568         d_printf("\t-i                    Run interactive (not a daemon)\n" );
 569         d_printf("\t-o                    Overwrite log file, don't append\n");
 570         d_printf("\t-h                    Print usage\n");
 571         d_printf("\t-?                    Print usage\n");
 572         d_printf("\t-V                    Print version\n");
 573         d_printf("\t-b                    Print build options\n");
 574         d_printf("\t-d debuglevel         Set the debuglevel\n");
 575         d_printf("\t-l log basename.      Basename for log/debug files\n");
 576         d_printf("\t-p port               Listen on the specified port\n");
 577         d_printf("\t-O socket options     Socket options\n");
 578         d_printf("\t-s services file.     Filename of services file\n");
 579         d_printf("\n");
 580 }
 581
 582 /****************************************************************************
 583   main program
 584 ****************************************************************************/
 585  int main(int argc,char *argv[])
 586 {
 587         extern BOOL append_log;
 588         extern char *optarg;
 589         /* shall I run as a daemon */
 590         BOOL is_daemon = False;
 591         BOOL interactive = False;
 592         BOOL specified_logfile = False;
 593         int port = SMB_PORT;
 594         int opt;
 595         pstring logfile;
 596
 597 #ifdef HAVE_SET_AUTH_PARAMETERS
 598         set_auth_parameters(argc,argv);
 599 #endif
 600
 601         /* this is for people who can't start the program correctly */
 602         while (argc > 1 && (*argv[1] != '-')) {
 603                 argv++;
 604                 argc--;
 605         }
 606
 607         while ( EOF != (opt = getopt(argc, argv, "O:l:s:d:Dp:h?bVaiof:")) )
 608                 switch (opt)  {
 609                 case 'O':
 610                         pstrcpy(user_socket_options,optarg);
 611                         break;
 612
 613                 case 's':
 614                         pstrcpy(dyn_CONFIGFILE,optarg);
 615                         break;
 616
 617                 case 'l':
 618                         specified_logfile = True;
 619                         slprintf(logfile, sizeof(logfile)-1, "%s/log.smbd", optarg);
 620                         lp_set_logfile(logfile);
 621                         break;
 622
 623                 case 'a':
 624                         append_log = True;
 625                         break;
 626
 627                 case 'i':
 628                         interactive = True;
 629                         break;
 630
 631                 case 'o':
 632                         append_log = False;
 633                         break;
 634
 635                 case 'D':
 636                         is_daemon = True;
 637                         break;
 638
 639                 case 'd':
 640                         if (*optarg == 'A')
 641                                 DEBUGLEVEL = 10000;
 642                         else
 643                                 DEBUGLEVEL = atoi(optarg);
 644                         break;
 645
 646                 case 'p':
 647                         port = atoi(optarg);
 648                         break;
 649
 650                 case 'h':
 651                 case '?':
 652                         usage(argv[0]);
 653                         exit(0);
 654                         break;
 655
 656                 case 'V':
 657                         d_printf("Version %s\n",VERSION);
 658                         exit(0);
 659                         break;
 660                 case 'b':
 661                         build_options(True); /* Display output to screen as well as debug */
 662                         exit(0);
 663                         break;
 664                 default:
 665                         DEBUG(0,("Incorrect program usage - are you sure the command line is correct?\n"));
 666                         usage(argv[0]);
 667                         exit(1);
 668                 }
 669
 670 #ifdef HAVE_SETLUID
 671         /* needed for SecureWare on SCO */
 672         setluid(0);
 673 #endif
 674
 675         sec_init();
 676
 677         load_case_tables();
 678
 679         append_log = True;
 680
 681         if(!specified_logfile) {
 682                 slprintf(logfile, sizeof(logfile)-1, "%s/log.smbd",
 683                          dyn_LOGFILEBASE);
 684                 lp_set_logfile(logfile);
 685         }
 686
 687         pstrcpy(remote_machine, "smbd");
 688
 689         setup_logging(argv[0],interactive);
 690
 691         /* we want to re-seed early to prevent time delays causing
 692            client problems at a later date. (tridge) */
 693         generate_random_buffer(NULL, 0, False);
 694
 695         /* make absolutely sure we run as root - to handle cases where people
 696            are crazy enough to have it setuid */
 697
 698         gain_root_privilege();
 699         gain_root_group_privilege();
 700
 701         fault_setup((void (*)(void *))exit_server);
 702         CatchSignal(SIGTERM , SIGNAL_CAST dflt_sig);
 703
 704         /* we are never interested in SIGPIPE */
 705         BlockSignals(True,SIGPIPE);
 706
 707 #if defined(SIGFPE)
 708         /* we are never interested in SIGFPE */
 709         BlockSignals(True,SIGFPE);
 710 #endif
 711
 712 #if defined(SIGUSR2)
 713         /* We are no longer interested in USR2 */
 714         BlockSignals(True,SIGUSR2);
 715 #endif
 716
 717         /* POSIX demands that signals are inherited. If the invoking process has
 718          * these signals masked, we will have problems, as we won't recieve them. */
 719         BlockSignals(False, SIGHUP);
 720         BlockSignals(False, SIGUSR1);
 721
 722         /* we want total control over the permissions on created files,
 723            so set our umask to 0 */
 724         umask(0);
 725
 726         init_sec_ctx();
 727
 728         reopen_logs();
 729
 730         DEBUG(1,( "smbd version %s started.\n", VERSION));
 731         DEBUGADD(1,( "Copyright Andrew Tridgell 1992-2002\n"));
 732
 733         DEBUG(2,("uid=%d gid=%d euid=%d egid=%d\n",
 734                  (int)getuid(),(int)getgid(),(int)geteuid(),(int)getegid()));
 735
 736         /* Output the build options to the debug log */
 737         build_options(False);
 738
 739         if (sizeof(uint16) < 2 || sizeof(uint32) < 4) {
 740                 DEBUG(0,("ERROR: Samba is not configured correctly for the word size on your machine\n"));
 741                 exit(1);
 742         }
 743
 744         /*
 745          * Do this before reload_services.
 746          */
 747
 748         if (!reload_services(False))
 749                 return(-1);
 750
 751         init_structs();
 752
 753         /* don't call winbind for our domain if we are the DC */
 754         if (lp_domain_logons()) {
 755                 winbind_exclude_domain(lp_workgroup());
 756         }
 757
 758 #ifdef WITH_PROFILE
 759         if (!profile_setup(False)) {
 760                 DEBUG(0,("ERROR: failed to setup profiling\n"));
 761                 return -1;
 762         }
 763 #endif
 764
 765 #ifdef WITH_SSL
 766         {
 767                 extern BOOL sslEnabled;
 768                 sslEnabled = lp_ssl_enabled();
 769                 if(sslEnabled)
 770                         sslutil_init(True);
 771         }
 772 #endif        /* WITH_SSL */
 773
 774         fstrcpy(global_myworkgroup, lp_workgroup());
 775
 776         CatchSignal(SIGHUP,SIGNAL_CAST sig_hup);
 777
 778         DEBUG(3,( "loaded services\n"));
 779
 780         if (!is_daemon && !is_a_socket(0)) {
 781                 DEBUG(0,("standard input is not a socket, assuming -D option\n"));
 782                 is_daemon = True;
 783         }
 784
 785         if (is_daemon && !interactive) {
 786                 DEBUG( 3, ( "Becoming a daemon.\n" ) );
 787                 become_daemon();
 788         }
 789
 790 #if HAVE_SETPGID
 791         /*
 792          * If we're interactive we want to set our own process group for
 793          * signal management.
 794          */
 795         if (interactive)
 796                 setpgid( (pid_t)0, (pid_t)0);
 797 #endif
 798
 799         if (!directory_exist(lp_lockdir(), NULL)) {
 800                 mkdir(lp_lockdir(), 0755);
 801         }
 802
 803         if (is_daemon) {
 804                 pidfile_create("smbd");
 805         }
 806
 807         if (!message_init()) {
 808                 exit(1);
 809         }
 810         register_msg_pool_usage();
 811
 812         /* Setup the main smbd so that we can get messages. */
 813         claim_connection(NULL,"",MAXSTATUS,True);
 814
 815         /*
 816            DO NOT ENABLE THIS TILL YOU COPE WITH KILLING THESE TASKS AND INETD
 817            THIS *killed* LOTS OF BUILD FARM MACHINES. IT CREATED HUNDREDS OF
 818            smbd PROCESSES THAT NEVER DIE
 819            start_background_queue();
 820         */
 821
 822         if (!open_sockets(is_daemon,port))
 823                 exit(1);
 824
 825         /*
 826          * everything after this point is run after the fork()
 827          */
 828
 829         if (!locking_init(0)) {
 830                 exit(1);
 831         }
 832
 833         if (!print_backend_init()) {
 834                 exit(1);
 835         }
 836
 837         if (!share_info_db_init()) {
 838                 exit(1);
 839         }
 840
 841         if(!initialize_password_db(False)) {
 842                 exit(1);
 843         }
 844
 845         /* possibly reload the services file. */
 846         reload_services(True);
 847
 848         if(!pdb_generate_sam_sid()) {
 849                 DEBUG(0,("ERROR: Samba cannot create a SAM SID.\n"));
 850                 exit(1);
 851         }
 852
 853         if (!init_group_mapping()) {
 854                 DEBUG(0,("Could not open tdb mapping file.\n"));
 855                 return 0;
 856         }
 857
 858         if (!init_account_policy()) {
 859                 DEBUG(0,("Could not open account policy tdb.\n"));
 860                 exit(1);
 861         }
 862
 863         if (*lp_rootdir()) {
 864                 if (sys_chroot(lp_rootdir()) == 0)
 865                         DEBUG(2,("Changed root to %s\n", lp_rootdir()));
 866         }
 867
 868         /* Setup oplocks */
 869         if (!init_oplocks()) {
 870                 exit(1);
 871         }
 872
 873         /* Setup mangle */
 874         if (!init_mangle_tdb()) {
 875                 exit(1);
 876         }
 877
 878         /* Setup change notify */
 879         if (!init_change_notify()) {
 880                 exit(1);
 881         }
 882
 883         smbd_process();
 884
 885         exit_server("normal exit");
 886         return(0);
 887 }