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 #include "trans2.h"
  24
  25 pstring servicesf = CONFIGFILE;
  26 extern pstring debugf;
  27 extern fstring global_myworkgroup;
  28 extern fstring global_sam_name;
  29 extern pstring global_myname;
  30 extern dfs_internal dfs_struct;
  31
  32 int am_parent = 1;
  33
  34 /* the last message the was processed */
  35 int last_message = -1;
  36
  37 /* a useful macro to debug the last message processed */
  38 #define LAST_MESSAGE() smb_fn_name(last_message)
  39
  40 extern pstring scope;
  41 extern int DEBUGLEVEL;
  42
  43 extern pstring user_socket_options;
  44
  45 #ifdef WITH_DFS
  46 extern int dcelogin_atmost_once;
  47 #endif /* WITH_DFS */
  48
  49
  50 extern fstring remote_machine;
  51 extern pstring OriginalDir;
  52 extern pstring myhostname;
  53
  54
  55 /****************************************************************************
  56   when exiting, take the whole family
  57 ****************************************************************************/
  58 static void *dflt_sig(void)
  59 {
  60         exit_server("caught signal");
  61         return NULL;
  62 }
  63
  64 /****************************************************************************
  65   Send a SIGTERM to our process group.
  66 *****************************************************************************/
  67 static void  killkids(void)
  68 {
  69         if(am_parent) kill(0,SIGTERM);
  70 }
  71
  72
  73 /****************************************************************************
  74   open the socket communication
  75 ****************************************************************************/
  76 static BOOL open_sockets_inetd(void)
  77 {
  78         extern int Client;
  79         extern int ClientPort;
  80
  81         /* Started from inetd. fd 0 is the socket. */
  82         /* We will abort gracefully when the client or remote system
  83            goes away */
  84         Client = dup(0);
  85         ClientPort = SMB_PORT;
  86
  87         /* close our standard file descriptors */
  88         close_low_fds();
  89
  90         set_socket_options(Client,"SO_KEEPALIVE");
  91         set_socket_options(Client,user_socket_options);
  92
  93         return True;
  94 }
  95
  96 /****************************************************************************
  97   open and listen to a socket
  98 ****************************************************************************/
  99 static int open_server_socket(int port, uint32 ipaddr)
 100 {
 101         int s;
 102
 103         s = open_socket_in(SOCK_STREAM, port, 0, ipaddr);
 104         if(s == -1)
 105                 return -1;
 106                 /* ready to listen */
 107         if (listen(s, 5) == -1) {
 108                 DEBUG(0,("listen: %s\n", strerror(errno)));
 109                 close(s);
 110                 return -1;
 111         }
 112         return s;
 113 }
 114
 115 /****************************************************************************
 116   open the socket communication
 117 ****************************************************************************/
 118 static BOOL open_sockets(BOOL is_daemon,int port,int port445)
 119 {
 120         extern int Client;
 121         extern int ClientPort;
 122         int num_interfaces = iface_count();
 123         int fd_listenset[FD_SETSIZE];
 124         fd_set listen_set;
 125         int s;
 126         int i;
 127
 128         memset(&fd_listenset, 0, sizeof(fd_listenset));
 129
 130         if (!is_daemon) {
 131                 return open_sockets_inetd();
 132         }
 133
 134
 135 #ifdef HAVE_ATEXIT
 136         {
 137                 static int atexit_set;
 138                 if(atexit_set == 0) {
 139                         atexit_set=1;
 140                         atexit(killkids);
 141                 }
 142         }
 143 #endif
 144
 145         /* Stop zombies */
 146         CatchChild();
 147
 148
 149         FD_ZERO(&listen_set);
 150
 151         if(lp_interfaces() && lp_bind_interfaces_only()) {
 152                 /* We have been given an interfaces line, and been
 153                    told to only bind to those interfaces. Create a
 154                    socket per interface and bind to only these.
 155                 */
 156
 157                 if(num_interfaces * 2 > FD_SETSIZE) {
 158                         DEBUG(0,("open_sockets: Too many interfaces specified to bind to. Number was %d \
 159 max can be %d\n",
 160                                  num_interfaces, FD_SETSIZE));
 161                         return False;
 162                 }
 163
 164                 /* Now open a listen socket for each of the
 165                    interfaces. */
 166                 for(i = 0; i < num_interfaces; i++) {
 167                         struct in_addr *ifip = iface_n_ip(i);
 168
 169                         if(ifip == NULL) {
 170                                 DEBUG(0,("open_sockets: interface %d has NULL IP address !\n", i));
 171                                 continue;
 172                         }
 173                         s = fd_listenset[i * 2] = open_server_socket(port, ifip->s_addr);
 174                         if(s == -1) return False;
 175                         FD_SET(s,&listen_set);
 176                         s = fd_listenset[i * 2 + 1] = open_server_socket(port445, ifip->s_addr);
 177                         if(s == -1) return False;
 178                         FD_SET(s,&listen_set);
 179                 }
 180         } else {
 181                 /* Just bind to 0.0.0.0 - accept connections
 182                    from anywhere. */
 183                 num_interfaces = 1;
 184
 185                 /* open an incoming socket */
 186                 s = open_server_socket(port, interpret_addr(lp_socket_address()));
 187                 if (s == -1)
 188                         return(False);
 189                 fd_listenset[0] = s;
 190                 FD_SET(s,&listen_set);
 191 #if 0
 192                 s = open_server_socket(port445, interpret_addr(lp_socket_address()));
 193                 if (s == -1)
 194                         return(False);
 195                 fd_listenset[1] = s;
 196                 FD_SET(s,&listen_set);
 197 #endif
 198         }
 199
 200         /* now accept incoming connections - forking a new process
 201            for each incoming connection */
 202         DEBUG(2,("waiting for a connection\n"));
 203         while (1) {
 204                 fd_set lfds;
 205                 int num;
 206
 207                 memcpy((char *)&lfds, (char *)&listen_set,
 208                        sizeof(listen_set));
 209
 210                 num = sys_select(256,&lfds,NULL, NULL);
 211
 212                 if (num == -1 && errno == EINTR)
 213                         continue;
 214
 215                 /* Find the sockets that are read-ready -
 216                    accept on these. */
 217                 for( ; num > 0; num--) {
 218                         struct sockaddr addr;
 219                         int in_addrlen = sizeof(addr);
 220
 221                         s = -1;
 222                         for(i = 0; i < num_interfaces; i++) {
 223                                 if(FD_ISSET(fd_listenset[i * 2],&lfds)) {
 224                                         s = fd_listenset[i * 2];
 225                                         ClientPort = SMB_PORT;
 226                                         break;
 227                                 }
 228 #if 0
 229                                 if(FD_ISSET(fd_listenset[i * 2 + 1],&lfds)) {
 230                                         s = fd_listenset[i * 2 + 1];
 231                                         ClientPort = SMB_PORT2;
 232                                         break;
 233                                 }
 234 #endif
 235                         }
 236
 237                         /* Clear this so we don't look
 238                            at it again. */
 239                         FD_CLR(s,&lfds);
 240
 241                         Client = accept(s,&addr,&in_addrlen);
 242
 243                         if (Client == -1 && errno == EINTR)
 244                                 continue;
 245
 246                         if (Client == -1) {
 247                                 DEBUG(0,("open_sockets: accept: %s\n",
 248                                          strerror(errno)));
 249                                 continue;
 250                         }
 251
 252                         if (Client != -1 && fork()==0) {
 253                                 /* Child code ... */
 254
 255                                 /* close the listening socket(s) */
 256                                 for(i = 0; i < num_interfaces; i++)
 257                                         close(fd_listenset[i]);
 258
 259                                 /* close our standard file
 260                                    descriptors */
 261                                 close_low_fds();
 262                                 am_parent = 0;
 263
 264                                 set_socket_options(Client,"SO_KEEPALIVE");
 265                                 set_socket_options(Client,user_socket_options);
 266
 267                                 /* Reset global variables in util.c so
 268                                    that client substitutions will be
 269                                    done correctly in the process.  */
 270                                 reset_globals_after_fork();
 271
 272                 /*
 273                  * Ensure this child has kernel oplock
 274                  * capabilities, but not it's children.
 275                  */
 276                 set_process_capability(KERNEL_OPLOCK_CAPABILITY, True);
 277                 set_inherited_process_capability(KERNEL_OPLOCK_CAPABILITY, False);
 278
 279                                 return True;
 280                         }
 281                         /* The parent doesn't need this socket */
 282                         close(Client);
 283
 284                         /* Force parent to check log size after
 285                          * spawning child.  Fix from
 286                          * klausr@ITAP.Physik.Uni-Stuttgart.De.  The
 287                          * parent smbd will log to logserver.smb.  It
 288                          * writes only two messages for each child
 289                          * started/finished. But each child writes,
 290                          * say, 50 messages also in logserver.smb,
 291                          * begining with the debug_count of the
 292                          * parent, before the child opens its own log
 293                          * file logserver.client. In a worst case
 294                          * scenario the size of logserver.smb would be
 295                          * checked after about 50*50=2500 messages
 296                          * (ca. 100kb).
 297                          * */
 298                         force_check_log_size();
 299
 300                 } /* end for num */
 301         } /* end while 1 */
 302
 303 /* NOTREACHED   return True; */
 304 }
 305
 306 /****************************************************************************
 307   reload the services file
 308   **************************************************************************/
 309 BOOL reload_services(BOOL test)
 310 {
 311         BOOL ret;
 312
 313         if (lp_loaded()) {
 314                 pstring fname;
 315                 pstrcpy(fname,lp_configfile());
 316                 if (file_exist(fname,NULL) && !strcsequal(fname,servicesf)) {
 317                         pstrcpy(servicesf,fname);
 318                         test = False;
 319                 }
 320         }
 321
 322         reopen_logs();
 323
 324         if (test && !lp_file_list_changed())
 325                 return(True);
 326
 327         lp_killunused(conn_snum_used);
 328
 329         ret = lp_load(servicesf,False,False,True);
 330
 331         load_printers();
 332
 333         /* perhaps the config filename is now set */
 334         if (!test)
 335                 reload_services(True);
 336
 337         reopen_logs();
 338
 339         load_interfaces();
 340
 341         {
 342                 extern int Client;
 343                 if (Client != -1) {
 344                         set_socket_options(Client,"SO_KEEPALIVE");
 345                         set_socket_options(Client,user_socket_options);
 346                 }
 347         }
 348
 349         reset_mangled_cache();
 350
 351         /* this forces service parameters to be flushed */
 352         become_service(NULL,True);
 353
 354         return(ret);
 355 }
 356
 357
 358
 359 /****************************************************************************
 360 this prevents zombie child processes
 361 ****************************************************************************/
 362 BOOL reload_after_sighup = False;
 363
 364 static void sig_hup(int sig)
 365 {
 366         BlockSignals(True,SIGHUP);
 367         DEBUG(0,("Got SIGHUP\n"));
 368
 369         /*
 370          * Fix from <branko.cibej@hermes.si> here.
 371          * We used to reload in the signal handler - this
 372          * is a *BIG* no-no.
 373          */
 374
 375         reload_after_sighup = True;
 376         BlockSignals(False,SIGHUP);
 377 }
 378
 379
 380
 381 #if DUMP_CORE
 382 /*******************************************************************
 383 prepare to dump a core file - carefully!
 384 ********************************************************************/
 385 static BOOL dump_core(void)
 386 {
 387         char *p;
 388         pstring dname;
 389         pstrcpy(dname,debugf);
 390         if ((p=strrchr(dname,'/'))) *p=0;
 391         pstrcat(dname,"/corefiles");
 392         mkdir(dname,0700);
 393         sys_chown(dname,getuid(),getgid());
 394         chmod(dname,0700);
 395         if (chdir(dname)) return(False);
 396         umask(~(0700));
 397
 398 #ifdef HAVE_GETRLIMIT
 399 #ifdef RLIMIT_CORE
 400         {
 401                 struct rlimit rlp;
 402                 getrlimit(RLIMIT_CORE, &rlp);
 403                 rlp.rlim_cur = MAX(4*1024*1024,rlp.rlim_cur);
 404                 setrlimit(RLIMIT_CORE, &rlp);
 405                 getrlimit(RLIMIT_CORE, &rlp);
 406                 DEBUG(3,("Core limits now %d %d\n",
 407                          (int)rlp.rlim_cur,(int)rlp.rlim_max));
 408         }
 409 #endif
 410 #endif
 411
 412
 413         DEBUG(0,("Dumping core in %s\n",dname));
 414         abort();
 415         return(True);
 416 }
 417 #endif
 418
 419
 420 /****************************************************************************
 421 exit the server
 422 ****************************************************************************/
 423 void exit_server(char *reason)
 424 {
 425         static int firsttime=1;
 426         extern char *last_inbuf;
 427
 428
 429         if (!firsttime) exit(0);
 430         firsttime = 0;
 431
 432         unbecome_user();
 433         DEBUG(2,("Closing connections\n"));
 434
 435         conn_close_all();
 436
 437 #ifdef WITH_DFS
 438         if (dcelogin_atmost_once) {
 439                 dfs_unlogin();
 440         }
 441 #endif
 442
 443         if (!reason) {
 444                 int oldlevel = DEBUGLEVEL;
 445                 DEBUGLEVEL = 10;
 446                 DEBUG(0,("Last message was %s\n",smb_fn_name(last_message)));
 447                 if (last_inbuf)
 448                         show_msg(last_inbuf);
 449                 DEBUGLEVEL = oldlevel;
 450                 DEBUG(0,("===============================================================\n"));
 451 #if DUMP_CORE
 452                 if (dump_core()) return;
 453 #endif
 454         }
 455
 456         locking_end();
 457
 458         DEBUG(3,("Server exit (%s)\n", (reason ? reason : "")));
 459 #ifdef MEM_MAN
 460         {
 461                 extern FILE *dbf;
 462                 smb_mem_write_verbose(dbf);
 463                 dbgflush();
 464         }
 465 #endif
 466         exit(0);
 467 }
 468
 469
 470
 471 /****************************************************************************
 472   initialise connect, service and file structs
 473 ****************************************************************************/
 474 static void init_structs(void)
 475 {
 476         conn_init();
 477         file_init();
 478         init_rpc_pipe_hnd(); /* for RPC pipes */
 479         if (!init_policy_hnd(MAX_SERVER_POLICY_HANDLES))
 480         {
 481                 exit_server("could not allocate policy handles\n");
 482         }
 483         init_printer_hnd(); /* for SPOOLSS handles */
 484         init_dptrs();
 485         init_dfs_table();
 486 }
 487
 488 /****************************************************************************
 489 usage on the program
 490 ****************************************************************************/
 491 static void usage(char *pname)
 492 {
 493         DEBUG(0,("Incorrect program usage - are you sure the command line is correct?\n"));
 494
 495         printf("Usage: %s [-D] [-p port] [-d debuglevel] ", pname);
 496         printf("[-l log basename] [-s services file]\n" );
 497         printf("Version %s\n",VERSION);
 498         printf("\t-D                    become a daemon\n");
 499         printf("\t-p port               listen on the specified port\n");
 500         printf("\t-d debuglevel         set the debuglevel\n");
 501         printf("\t-l log basename.      Basename for log/debug files\n");
 502         printf("\t-s services file.     Filename of services file\n");
 503         printf("\t-P                    passive only\n");
 504         printf("\t-a                    append to log file (default)\n");
 505         printf("\t-o                    overwrite log file, don't append\n");
 506         printf("\t-i scope              NetBIOS scope to use (default none)\n");
 507         printf("\n");
 508 }
 509
 510
 511 /****************************************************************************
 512   main program
 513 ****************************************************************************/
 514  int main(int argc,char *argv[])
 515 {
 516         extern BOOL append_log;
 517         /* shall I run as a daemon */
 518         BOOL is_daemon = False;
 519         int port = SMB_PORT;
 520         int port445 = SMB_PORT2;
 521         int opt;
 522         extern char *optarg;
 523
 524 #ifdef HAVE_SET_AUTH_PARAMETERS
 525         set_auth_parameters(argc,argv);
 526 #endif
 527
 528 #ifdef HAVE_SETLUID
 529         /* needed for SecureWare on SCO */
 530         setluid(0);
 531 #endif
 532
 533         append_log = True;
 534
 535         TimeInit();
 536
 537         pstrcpy(debugf,SMBLOGFILE);
 538
 539         pstrcpy(remote_machine, "smb");
 540
 541         setup_logging(argv[0],False);
 542
 543         charset_initialise();
 544
 545         /* make absolutely sure we run as root - to handle cases where people
 546            are crazy enough to have it setuid */
 547 #ifdef HAVE_SETRESUID
 548         setresuid(0,0,0);
 549 #else
 550         setuid(0);
 551         seteuid(0);
 552         setuid(0);
 553         seteuid(0);
 554 #endif
 555
 556         fault_setup((void (*)(void *))exit_server);
 557         CatchSignal(SIGTERM , SIGNAL_CAST dflt_sig);
 558
 559         /* we are never interested in SIGPIPE */
 560         BlockSignals(True,SIGPIPE);
 561
 562         /* we want total control over the permissions on created files,
 563            so set our umask to 0 */
 564         umask(0);
 565
 566         dos_GetWd(OriginalDir);
 567
 568         init_uid();
 569
 570         /* this is for people who can't start the program correctly */
 571         while (argc > 1 && (*argv[1] != '-')) {
 572                 argv++;
 573                 argc--;
 574         }
 575
 576         while ( EOF != (opt = getopt(argc, argv, "O:i:l:s:d:Dp:h?Paof:")) )
 577                 switch (opt)  {
 578                 case 'O':
 579                         pstrcpy(user_socket_options,optarg);
 580                         break;
 581
 582                 case 'i':
 583                         pstrcpy(scope,optarg);
 584                         break;
 585
 586                 case 'P':
 587                         {
 588                                 extern BOOL passive;
 589                                 passive = True;
 590                         }
 591                         break;
 592
 593                 case 's':
 594                         pstrcpy(servicesf,optarg);
 595                         break;
 596
 597                 case 'l':
 598                         pstrcpy(debugf,optarg);
 599                         break;
 600
 601                 case 'a':
 602                         append_log = True;
 603                         break;
 604
 605                 case 'o':
 606                         append_log = False;
 607                         break;
 608
 609                 case 'D':
 610                         is_daemon = True;
 611                         break;
 612
 613                 case 'd':
 614                         if (*optarg == 'A')
 615                                 DEBUGLEVEL = 10000;
 616                         else
 617                                 DEBUGLEVEL = atoi(optarg);
 618                         break;
 619
 620                 case 'p':
 621                         port = atoi(optarg);
 622                         break;
 623
 624                 case 'h':
 625                 case '?':
 626                         usage(argv[0]);
 627                         exit(0);
 628                         break;
 629
 630                 default:
 631                         usage(argv[0]);
 632                         exit(1);
 633                 }
 634
 635         reopen_logs();
 636
 637         DEBUG(1,( "smbd version %s started.\n", VERSION));
 638         DEBUGADD(1,( "Copyright Andrew Tridgell 1992-1998\n"));
 639
 640         DEBUG(2,("uid=%d gid=%d euid=%d egid=%d\n",
 641                  (int)getuid(),(int)getgid(),(int)geteuid(),(int)getegid()));
 642
 643         if (sizeof(uint16) < 2 || sizeof(uint32) < 4) {
 644                 DEBUG(0,("ERROR: Samba is not configured correctly for the word size on your machine\n"));
 645                 exit(1);
 646         }
 647
 648         get_myname(myhostname,NULL);
 649
 650         if (!reload_services(False))
 651                 return(-1);
 652
 653         init_structs();
 654
 655 #ifdef WITH_PROFILE
 656         if (!profile_setup(False)) {
 657                 DEBUG(0,("ERROR: failed to setup profiling\n"));
 658                 return -1;
 659         }
 660 #endif
 661
 662         /*
 663          * Set the machine NETBIOS name if not already
 664          * set from the config file.
 665          */
 666         if (!*global_myname)
 667         {
 668                 fstrcpy(global_myname, dns_to_netbios_name(myhostname));
 669         }
 670         strupper(global_myname);
 671
 672 #ifdef WITH_SSL
 673         {
 674                 extern BOOL sslEnabled;
 675                 sslEnabled = lp_ssl_enabled();
 676                 if(sslEnabled)
 677                         sslutil_init(True);
 678         }
 679 #endif        /* WITH_SSL */
 680
 681 #if 0
 682         start_msrpc_agent("lsarpc");
 683 #endif
 684         add_msrpc_command_processor( "samr",     "lsass",   api_samr_rpc );
 685         add_msrpc_command_processor( "srvsvc",   "ntsvcs",  api_srvsvc_rpc );
 686         add_msrpc_command_processor( "wkssvc",   "ntsvcs",  api_wkssvc_rpc );
 687         add_msrpc_command_processor( "browser",  "ntsvcs",  api_brs_rpc );
 688         add_msrpc_command_processor( "svcctl",   "ntsvcs",  api_svcctl_rpc );
 689         add_msrpc_command_processor( "NETLOGON", "lsass",   api_netlog_rpc );
 690         add_msrpc_command_processor( "winreg",   "winreg",  api_reg_rpc );
 691         add_msrpc_command_processor( "spoolss",  "spoolss", api_spoolss_rpc );
 692
 693         codepage_initialise(lp_client_code_page());
 694
 695         if (!pwdb_initialise(True))
 696         {
 697                 exit(1);
 698         }
 699
 700         if(!initialise_sam_password_db())
 701         {
 702                 exit(1);
 703         }
 704
 705         if(!initialise_passgrp_db())
 706         {
 707                 exit(1);
 708         }
 709
 710         if(!initialise_group_db())
 711         {
 712                 exit(1);
 713         }
 714
 715         if(!initialise_alias_db())
 716         {
 717                 exit(1);
 718         }
 719
 720         if(!initialise_builtin_db())
 721         {
 722                 exit(1);
 723         }
 724
 725         if (!get_member_domain_sid())
 726         {
 727                 DEBUG(0,("ERROR: Samba cannot obtain PDC SID from PDC(s) %s.\n",
 728                           lp_passwordserver()));
 729                 exit(1);
 730         }
 731
 732         CatchSignal(SIGHUP,SIGNAL_CAST sig_hup);
 733
 734         /* Setup the signals that allow the debug log level
 735            to by dynamically changed. */
 736
 737         /* If we are using the malloc debug code we can't use
 738            SIGUSR1 and SIGUSR2 to do debug level changes. */
 739
 740 #ifndef MEM_MAN
 741 #if defined(SIGUSR1)
 742         CatchSignal( SIGUSR1, SIGNAL_CAST sig_usr1 );
 743 #endif /* SIGUSR1 */
 744
 745 #if defined(SIGUSR2)
 746         CatchSignal( SIGUSR2, SIGNAL_CAST sig_usr2 );
 747 #endif /* SIGUSR2 */
 748 #endif /* MEM_MAN */
 749
 750         DEBUG(3,( "loaded services\n"));
 751
 752         if (!is_daemon && !is_a_socket(0)) {
 753                 DEBUG(0,("standard input is not a socket, assuming -D option\n"));
 754                 is_daemon = True;
 755         }
 756
 757         if (is_daemon) {
 758                 DEBUG( 3, ( "Becoming a daemon.\n" ) );
 759                 become_daemon();
 760         }
 761
 762         check_kernel_oplocks();
 763
 764         if (!directory_exist(lp_lockdir(), NULL)) {
 765                 mkdir(lp_lockdir(), 0755);
 766         }
 767
 768         if (is_daemon) {
 769                 pidfile_create("smbd");
 770         }
 771
 772         if (!open_sockets(is_daemon,port,port445))
 773                 exit(1);
 774
 775         if (!locking_init(0))
 776                 exit(1);
 777
 778         /* possibly reload the services file. */
 779         reload_services(True);
 780
 781         if (*lp_rootdir()) {
 782                 if (sys_chroot(lp_rootdir()) == 0)
 783                         DEBUG(2,("Changed root to %s\n", lp_rootdir()));
 784         }
 785
 786         /* Setup the oplock IPC socket. */
 787         if( !open_oplock_ipc() )
 788                 exit(1);
 789
 790         smbd_process();
 791         close_sockets();
 792
 793         exit_server("normal exit");
 794         return(0);
 795 }