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                2002-2003
   7    Copyright (C) Volker Lendecke                1993-2007
   8    Copyright (C) Jeremy Allison                 1993-2007
   9
  10    This program is free software; you can redistribute it and/or modify
  11    it under the terms of the GNU General Public License as published by
  12    the Free Software Foundation; either version 3 of the License, or
  13    (at your option) any later version.
  14
  15    This program is distributed in the hope that it will be useful,
  16    but WITHOUT ANY WARRANTY; without even the implied warranty of
  17    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18    GNU General Public License for more details.
  19
  20    You should have received a copy of the GNU General Public License
  21    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  22 */
  23
  24 #include "includes.h"
  25
  26 static_decl_rpc;
  27
  28 static int am_parent = 1;
  29
  30 extern struct auth_context *negprot_global_auth_context;
  31 extern SIG_ATOMIC_T got_sig_term;
  32 extern SIG_ATOMIC_T reload_after_sighup;
  33 static SIG_ATOMIC_T got_sig_cld;
  34
  35 #ifdef WITH_DFS
  36 extern int dcelogin_atmost_once;
  37 #endif /* WITH_DFS */
  38
  39 /* really we should have a top level context structure that has the
  40    client file descriptor as an element. That would require a major rewrite :(
  41
  42    the following 2 functions are an alternative - they make the file
  43    descriptor private to smbd
  44  */
  45 static int server_fd = -1;
  46
  47 int smbd_server_fd(void)
  48 {
  49         return server_fd;
  50 }
  51
  52 static void smbd_set_server_fd(int fd)
  53 {
  54         server_fd = fd;
  55 }
  56
  57 int get_client_fd(void)
  58 {
  59         return server_fd;
  60 }
  61
  62 #ifdef CLUSTER_SUPPORT
  63 static int client_get_tcp_info(struct sockaddr_storage *server,
  64                                struct sockaddr_storage *client)
  65 {
  66         socklen_t length;
  67         if (server_fd == -1) {
  68                 return -1;
  69         }
  70         length = sizeof(*server);
  71         if (getsockname(server_fd, (struct sockaddr *)server, &length) != 0) {
  72                 return -1;
  73         }
  74         length = sizeof(*client);
  75         if (getpeername(server_fd, (struct sockaddr *)client, &length) != 0) {
  76                 return -1;
  77         }
  78         return 0;
  79 }
  80 #endif
  81
  82 struct event_context *smbd_event_context(void)
  83 {
  84         static struct event_context *ctx;
  85
  86         if (!ctx && !(ctx = event_context_init(talloc_autofree_context()))) {
  87                 smb_panic("Could not init smbd event context");
  88         }
  89         return ctx;
  90 }
  91
  92 struct messaging_context *smbd_messaging_context(void)
  93 {
  94         static struct messaging_context *ctx;
  95
  96         if (ctx == NULL) {
  97                 ctx = messaging_init(talloc_autofree_context(), server_id_self(),
  98                                      smbd_event_context());
  99         }
 100         if (ctx == NULL) {
 101                 DEBUG(0, ("Could not init smbd messaging context.\n"));
 102         }
 103         return ctx;
 104 }
 105
 106 struct memcache *smbd_memcache(void)
 107 {
 108         static struct memcache *cache;
 109
 110         if (!cache
 111             && !(cache = memcache_init(talloc_autofree_context(),
 112                                        lp_max_stat_cache_size()*1024))) {
 113
 114                 smb_panic("Could not init smbd memcache");
 115         }
 116         return cache;
 117 }
 118
 119 /*******************************************************************
 120  What to do when smb.conf is updated.
 121  ********************************************************************/
 122
 123 static void smb_conf_updated(struct messaging_context *msg,
 124                              void *private_data,
 125                              uint32_t msg_type,
 126                              struct server_id server_id,
 127                              DATA_BLOB *data)
 128 {
 129         DEBUG(10,("smb_conf_updated: Got message saying smb.conf was "
 130                   "updated. Reloading.\n"));
 131         reload_services(False);
 132 }
 133
 134
 135 /*******************************************************************
 136  Delete a statcache entry.
 137  ********************************************************************/
 138
 139 static void smb_stat_cache_delete(struct messaging_context *msg,
 140                                   void *private_data,
 141                                   uint32_t msg_tnype,
 142                                   struct server_id server_id,
 143                                   DATA_BLOB *data)
 144 {
 145         const char *name = (const char *)data->data;
 146         DEBUG(10,("smb_stat_cache_delete: delete name %s\n", name));
 147         stat_cache_delete(name);
 148 }
 149
 150 /****************************************************************************
 151  Terminate signal.
 152 ****************************************************************************/
 153
 154 static void sig_term(void)
 155 {
 156         got_sig_term = 1;
 157         sys_select_signal(SIGTERM);
 158 }
 159
 160 /****************************************************************************
 161  Catch a sighup.
 162 ****************************************************************************/
 163
 164 static void sig_hup(int sig)
 165 {
 166         reload_after_sighup = 1;
 167         sys_select_signal(SIGHUP);
 168 }
 169
 170 /****************************************************************************
 171  Catch a sigcld
 172 ****************************************************************************/
 173 static void sig_cld(int sig)
 174 {
 175         got_sig_cld = 1;
 176         sys_select_signal(SIGCLD);
 177 }
 178
 179 /****************************************************************************
 180   Send a SIGTERM to our process group.
 181 *****************************************************************************/
 182
 183 static void  killkids(void)
 184 {
 185         if(am_parent) kill(0,SIGTERM);
 186 }
 187
 188 /****************************************************************************
 189  Process a sam sync message - not sure whether to do this here or
 190  somewhere else.
 191 ****************************************************************************/
 192
 193 static void msg_sam_sync(struct messaging_context *msg,
 194                          void *private_data,
 195                          uint32_t msg_type,
 196                          struct server_id server_id,
 197                          DATA_BLOB *data)
 198 {
 199         DEBUG(10, ("** sam sync message received, ignoring\n"));
 200 }
 201
 202
 203 /****************************************************************************
 204  Open the socket communication - inetd.
 205 ****************************************************************************/
 206
 207 static bool open_sockets_inetd(void)
 208 {
 209         /* Started from inetd. fd 0 is the socket. */
 210         /* We will abort gracefully when the client or remote system
 211            goes away */
 212         smbd_set_server_fd(dup(0));
 213
 214         /* close our standard file descriptors */
 215         close_low_fds(False); /* Don't close stderr */
 216
 217         set_socket_options(smbd_server_fd(),"SO_KEEPALIVE");
 218         set_socket_options(smbd_server_fd(), lp_socket_options());
 219
 220         return True;
 221 }
 222
 223 static void msg_exit_server(struct messaging_context *msg,
 224                             void *private_data,
 225                             uint32_t msg_type,
 226                             struct server_id server_id,
 227                             DATA_BLOB *data)
 228 {
 229         DEBUG(3, ("got a SHUTDOWN message\n"));
 230         exit_server_cleanly(NULL);
 231 }
 232
 233 #ifdef DEVELOPER
 234 static void msg_inject_fault(struct messaging_context *msg,
 235                              void *private_data,
 236                              uint32_t msg_type,
 237                              struct server_id src,
 238                              DATA_BLOB *data)
 239 {
 240         int sig;
 241
 242         if (data->length != sizeof(sig)) {
 243
 244                 DEBUG(0, ("Process %s sent bogus signal injection request\n",
 245                           procid_str_static(&src)));
 246                 return;
 247         }
 248
 249         sig = *(int *)data->data;
 250         if (sig == -1) {
 251                 exit_server("internal error injected");
 252                 return;
 253         }
 254
 255 #if HAVE_STRSIGNAL
 256         DEBUG(0, ("Process %s requested injection of signal %d (%s)\n",
 257                   procid_str_static(&src), sig, strsignal(sig)));
 258 #else
 259         DEBUG(0, ("Process %s requested injection of signal %d\n",
 260                   procid_str_static(&src), sig));
 261 #endif
 262
 263         kill(sys_getpid(), sig);
 264 }
 265 #endif /* DEVELOPER */
 266
 267 struct child_pid {
 268         struct child_pid *prev, *next;
 269         pid_t pid;
 270 };
 271
 272 static struct child_pid *children;
 273 static int num_children;
 274
 275 static void add_child_pid(pid_t pid)
 276 {
 277         struct child_pid *child;
 278
 279         if (lp_max_smbd_processes() == 0) {
 280                 /* Don't bother with the child list if we don't care anyway */
 281                 return;
 282         }
 283
 284         child = SMB_MALLOC_P(struct child_pid);
 285         if (child == NULL) {
 286                 DEBUG(0, ("Could not add child struct -- malloc failed\n"));
 287                 return;
 288         }
 289         child->pid = pid;
 290         DLIST_ADD(children, child);
 291         num_children += 1;
 292 }
 293
 294 static void remove_child_pid(pid_t pid, bool unclean_shutdown)
 295 {
 296         struct child_pid *child;
 297
 298         if (unclean_shutdown) {
 299                 /* a child terminated uncleanly so tickle all processes to see
 300                    if they can grab any of the pending locks
 301                 */
 302                 DEBUG(3,(__location__ " Unclean shutdown of pid %u\n", pid));
 303                 messaging_send_buf(smbd_messaging_context(), procid_self(),
 304                                    MSG_SMB_BRL_VALIDATE, NULL, 0);
 305                 message_send_all(smbd_messaging_context(),
 306                                  MSG_SMB_UNLOCK, NULL, 0, NULL);
 307         }
 308
 309         if (lp_max_smbd_processes() == 0) {
 310                 /* Don't bother with the child list if we don't care anyway */
 311                 return;
 312         }
 313
 314         for (child = children; child != NULL; child = child->next) {
 315                 if (child->pid == pid) {
 316                         struct child_pid *tmp = child;
 317                         DLIST_REMOVE(children, child);
 318                         SAFE_FREE(tmp);
 319                         num_children -= 1;
 320                         return;
 321                 }
 322         }
 323
 324         DEBUG(0, ("Could not find child %d -- ignoring\n", (int)pid));
 325 }
 326
 327 /****************************************************************************
 328  Have we reached the process limit ?
 329 ****************************************************************************/
 330
 331 static bool allowable_number_of_smbd_processes(void)
 332 {
 333         int max_processes = lp_max_smbd_processes();
 334
 335         if (!max_processes)
 336                 return True;
 337
 338         return num_children < max_processes;
 339 }
 340
 341 /****************************************************************************
 342  Open the socket communication.
 343 ****************************************************************************/
 344
 345 static bool open_sockets_smbd(bool is_daemon, bool interactive, const char *smb_ports)
 346 {
 347         int num_interfaces = iface_count();
 348         int num_sockets = 0;
 349         int fd_listenset[FD_SETSIZE];
 350         fd_set listen_set;
 351         int s;
 352         int maxfd = 0;
 353         int i;
 354         char *ports;
 355         struct dns_reg_state * dns_reg = NULL;
 356         unsigned dns_port = 0;
 357
 358         if (!is_daemon) {
 359                 return open_sockets_inetd();
 360         }
 361
 362 #ifdef HAVE_ATEXIT
 363         {
 364                 static int atexit_set;
 365                 if(atexit_set == 0) {
 366                         atexit_set=1;
 367                         atexit(killkids);
 368                 }
 369         }
 370 #endif
 371
 372         /* Stop zombies */
 373         CatchSignal(SIGCLD, sig_cld);
 374
 375         FD_ZERO(&listen_set);
 376
 377         /* use a reasonable default set of ports - listing on 445 and 139 */
 378         if (!smb_ports) {
 379                 ports = lp_smb_ports();
 380                 if (!ports || !*ports) {
 381                         ports = smb_xstrdup(SMB_PORTS);
 382                 } else {
 383                         ports = smb_xstrdup(ports);
 384                 }
 385         } else {
 386                 ports = smb_xstrdup(smb_ports);
 387         }
 388
 389         if (lp_interfaces() && lp_bind_interfaces_only()) {
 390                 /* We have been given an interfaces line, and been
 391                    told to only bind to those interfaces. Create a
 392                    socket per interface and bind to only these.
 393                 */
 394
 395                 /* Now open a listen socket for each of the
 396                    interfaces. */
 397                 for(i = 0; i < num_interfaces; i++) {
 398                         TALLOC_CTX *frame = NULL;
 399                         const struct sockaddr_storage *ifss =
 400                                         iface_n_sockaddr_storage(i);
 401                         char *tok;
 402                         const char *ptr;
 403
 404                         if (ifss == NULL) {
 405                                 DEBUG(0,("open_sockets_smbd: "
 406                                         "interface %d has NULL IP address !\n",
 407                                         i));
 408                                 continue;
 409                         }
 410
 411                         frame = talloc_stackframe();
 412                         for (ptr=ports;
 413                                         next_token_talloc(frame,&ptr, &tok, " \t,");) {
 414                                 unsigned port = atoi(tok);
 415                                 if (port == 0 || port > 0xffff) {
 416                                         continue;
 417                                 }
 418
 419                                 /* Keep the first port for mDNS service
 420                                  * registration.
 421                                  */
 422                                 if (dns_port == 0) {
 423                                         dns_port = port;
 424                                 }
 425
 426                                 s = fd_listenset[num_sockets] =
 427                                         open_socket_in(SOCK_STREAM,
 428                                                         port,
 429                                                         num_sockets == 0 ? 0 : 2,
 430                                                         ifss,
 431                                                         true);
 432                                 if(s == -1) {
 433                                         continue;
 434                                 }
 435
 436                                 /* ready to listen */
 437                                 set_socket_options(s,"SO_KEEPALIVE");
 438                                 set_socket_options(s,lp_socket_options());
 439
 440                                 /* Set server socket to
 441                                  * non-blocking for the accept. */
 442                                 set_blocking(s,False);
 443
 444                                 if (listen(s, SMBD_LISTEN_BACKLOG) == -1) {
 445                                         DEBUG(0,("open_sockets_smbd: listen: "
 446                                                 "%s\n", strerror(errno)));
 447                                         close(s);
 448                                         TALLOC_FREE(frame);
 449                                         return False;
 450                                 }
 451                                 FD_SET(s,&listen_set);
 452                                 maxfd = MAX( maxfd, s);
 453
 454                                 num_sockets++;
 455                                 if (num_sockets >= FD_SETSIZE) {
 456                                         DEBUG(0,("open_sockets_smbd: Too "
 457                                                 "many sockets to bind to\n"));
 458                                         TALLOC_FREE(frame);
 459                                         return False;
 460                                 }
 461                         }
 462                         TALLOC_FREE(frame);
 463                 }
 464         } else {
 465                 /* Just bind to 0.0.0.0 - accept connections
 466                    from anywhere. */
 467
 468                 TALLOC_CTX *frame = talloc_stackframe();
 469                 char *tok;
 470                 const char *ptr;
 471                 const char *sock_addr = lp_socket_address();
 472                 char *sock_tok;
 473                 const char *sock_ptr;
 474
 475                 if (strequal(sock_addr, "0.0.0.0") ||
 476                     strequal(sock_addr, "::")) {
 477 #if HAVE_IPV6
 478                         sock_addr = "::,0.0.0.0";
 479 #else
 480                         sock_addr = "0.0.0.0";
 481 #endif
 482                 }
 483
 484                 for (sock_ptr=sock_addr;
 485                                 next_token_talloc(frame, &sock_ptr, &sock_tok, " \t,"); ) {
 486                         for (ptr=ports; next_token_talloc(frame, &ptr, &tok, " \t,"); ) {
 487                                 struct sockaddr_storage ss;
 488
 489                                 unsigned port = atoi(tok);
 490                                 if (port == 0 || port > 0xffff) {
 491                                         continue;
 492                                 }
 493
 494                                 /* Keep the first port for mDNS service
 495                                  * registration.
 496                                  */
 497                                 if (dns_port == 0) {
 498                                         dns_port = port;
 499                                 }
 500
 501                                 /* open an incoming socket */
 502                                 if (!interpret_string_addr(&ss, sock_tok,
 503                                                 AI_NUMERICHOST|AI_PASSIVE)) {
 504                                         continue;
 505                                 }
 506
 507                                 s = open_socket_in(SOCK_STREAM,
 508                                                 port,
 509                                                 num_sockets == 0 ? 0 : 2,
 510                                                 &ss,
 511                                                 true);
 512                                 if (s == -1) {
 513                                         continue;
 514                                 }
 515
 516                                 /* ready to listen */
 517                                 set_socket_options(s,"SO_KEEPALIVE");
 518                                 set_socket_options(s,lp_socket_options());
 519
 520                                 /* Set server socket to non-blocking
 521                                  * for the accept. */
 522                                 set_blocking(s,False);
 523
 524                                 if (listen(s, SMBD_LISTEN_BACKLOG) == -1) {
 525                                         DEBUG(0,("open_sockets_smbd: "
 526                                                 "listen: %s\n",
 527                                                  strerror(errno)));
 528                                         close(s);
 529                                         TALLOC_FREE(frame);
 530                                         return False;
 531                                 }
 532
 533                                 fd_listenset[num_sockets] = s;
 534                                 FD_SET(s,&listen_set);
 535                                 maxfd = MAX( maxfd, s);
 536
 537                                 num_sockets++;
 538
 539                                 if (num_sockets >= FD_SETSIZE) {
 540                                         DEBUG(0,("open_sockets_smbd: Too "
 541                                                 "many sockets to bind to\n"));
 542                                         TALLOC_FREE(frame);
 543                                         return False;
 544                                 }
 545                         }
 546                 }
 547                 TALLOC_FREE(frame);
 548         }
 549
 550         SAFE_FREE(ports);
 551
 552         if (num_sockets == 0) {
 553                 DEBUG(0,("open_sockets_smbd: No "
 554                         "sockets available to bind to.\n"));
 555                 return false;
 556         }
 557
 558         /* Setup the main smbd so that we can get messages. Note that
 559            do this after starting listening. This is needed as when in
 560            clustered mode, ctdb won't allow us to start doing database
 561            operations until it has gone thru a full startup, which
 562            includes checking to see that smbd is listening. */
 563         claim_connection(NULL,"",
 564                          FLAG_MSG_GENERAL|FLAG_MSG_SMBD|FLAG_MSG_DBWRAP);
 565
 566         /* Listen to messages */
 567
 568         messaging_register(smbd_messaging_context(), NULL,
 569                            MSG_SMB_SAM_SYNC, msg_sam_sync);
 570         messaging_register(smbd_messaging_context(), NULL,
 571                            MSG_SHUTDOWN, msg_exit_server);
 572         messaging_register(smbd_messaging_context(), NULL,
 573                            MSG_SMB_FILE_RENAME, msg_file_was_renamed);
 574         messaging_register(smbd_messaging_context(), NULL,
 575                            MSG_SMB_CONF_UPDATED, smb_conf_updated);
 576         messaging_register(smbd_messaging_context(), NULL,
 577                            MSG_SMB_STAT_CACHE_DELETE, smb_stat_cache_delete);
 578         brl_register_msgs(smbd_messaging_context());
 579
 580 #ifdef CLUSTER_SUPPORT
 581         if (lp_clustering()) {
 582                 ctdbd_register_reconfigure(messaging_ctdbd_connection());
 583         }
 584 #endif
 585
 586 #ifdef DEVELOPER
 587         messaging_register(smbd_messaging_context(), NULL,
 588                            MSG_SMB_INJECT_FAULT, msg_inject_fault);
 589 #endif
 590
 591         /* now accept incoming connections - forking a new process
 592            for each incoming connection */
 593         DEBUG(2,("waiting for a connection\n"));
 594         while (1) {
 595                 struct timeval now, idle_timeout;
 596                 fd_set r_fds, w_fds;
 597                 int num;
 598
 599                 /* Ensure we respond to PING and DEBUG messages from the main smbd. */
 600                 message_dispatch(smbd_messaging_context());
 601
 602                 if (got_sig_cld) {
 603                         pid_t pid;
 604                         int status;
 605
 606                         got_sig_cld = False;
 607
 608                         while ((pid = sys_waitpid(-1, &status, WNOHANG)) > 0) {
 609                                 bool unclean_shutdown = False;
 610
 611                                 /* If the child terminated normally, assume
 612                                    it was an unclean shutdown unless the
 613                                    status is 0
 614                                 */
 615                                 if (WIFEXITED(status)) {
 616                                         unclean_shutdown = WEXITSTATUS(status);
 617                                 }
 618                                 /* If the child terminated due to a signal
 619                                    we always assume it was unclean.
 620                                 */
 621                                 if (WIFSIGNALED(status)) {
 622                                         unclean_shutdown = True;
 623                                 }
 624                                 remove_child_pid(pid, unclean_shutdown);
 625                         }
 626                 }
 627
 628                 idle_timeout = timeval_zero();
 629
 630                 memcpy((char *)&r_fds, (char *)&listen_set,
 631                        sizeof(listen_set));
 632                 FD_ZERO(&w_fds);
 633                 GetTimeOfDay(&now);
 634
 635                 /* Kick off our mDNS registration. */
 636                 if (dns_port != 0) {
 637                         dns_register_smbd(&dns_reg, dns_port, &maxfd,
 638                                         &r_fds, &idle_timeout);
 639                 }
 640
 641                 event_add_to_select_args(smbd_event_context(), &now,
 642                                          &r_fds, &w_fds, &idle_timeout,
 643                                          &maxfd);
 644
 645                 num = sys_select(maxfd+1,&r_fds,&w_fds,NULL,
 646                                  timeval_is_zero(&idle_timeout) ?
 647                                  NULL : &idle_timeout);
 648
 649                 if (num == -1 && errno == EINTR) {
 650                         if (got_sig_term) {
 651                                 exit_server_cleanly(NULL);
 652                         }
 653
 654                         /* check for sighup processing */
 655                         if (reload_after_sighup) {
 656                                 change_to_root_user();
 657                                 DEBUG(1,("Reloading services after SIGHUP\n"));
 658                                 reload_services(False);
 659                                 reload_after_sighup = 0;
 660                         }
 661
 662                         continue;
 663                 }
 664
 665
 666                 /* If the idle timeout fired and we don't have any connected
 667                  * users, exit gracefully. We should be running under a process
 668                  * controller that will restart us if necessry.
 669                  */
 670                 if (num == 0 && count_all_current_connections() == 0) {
 671                         exit_server_cleanly("idle timeout");
 672                 }
 673
 674                 /* process pending nDNS responses */
 675                 if (dns_register_smbd_reply(dns_reg, &r_fds, &idle_timeout)) {
 676                         --num;
 677                 }
 678
 679                 if (run_events(smbd_event_context(), num, &r_fds, &w_fds)) {
 680                         continue;
 681                 }
 682
 683                 /* check if we need to reload services */
 684                 check_reload(time(NULL));
 685
 686                 /* Find the sockets that are read-ready -
 687                    accept on these. */
 688                 for( ; num > 0; num--) {
 689                         struct sockaddr addr;
 690                         socklen_t in_addrlen = sizeof(addr);
 691                         pid_t child = 0;
 692
 693                         s = -1;
 694                         for(i = 0; i < num_sockets; i++) {
 695                                 if(FD_ISSET(fd_listenset[i],&r_fds)) {
 696                                         s = fd_listenset[i];
 697                                         /* Clear this so we don't look
 698                                            at it again. */
 699                                         FD_CLR(fd_listenset[i],&r_fds);
 700                                         break;
 701                                 }
 702                         }
 703
 704                         smbd_set_server_fd(accept(s,&addr,&in_addrlen));
 705
 706                         if (smbd_server_fd() == -1 && errno == EINTR)
 707                                 continue;
 708
 709                         if (smbd_server_fd() == -1) {
 710                                 DEBUG(2,("open_sockets_smbd: accept: %s\n",
 711                                          strerror(errno)));
 712                                 continue;
 713                         }
 714
 715                         /* Ensure child is set to blocking mode */
 716                         set_blocking(smbd_server_fd(),True);
 717
 718                         if (smbd_server_fd() != -1 && interactive)
 719                                 return True;
 720
 721                         if (allowable_number_of_smbd_processes() &&
 722                             smbd_server_fd() != -1 &&
 723                             ((child = sys_fork())==0)) {
 724                                 char remaddr[INET6_ADDRSTRLEN];
 725
 726                                 /* Child code ... */
 727
 728                                 /* Stop zombies, the parent explicitly handles
 729                                  * them, counting worker smbds. */
 730                                 CatchChild();
 731
 732                                 /* close the listening socket(s) */
 733                                 for(i = 0; i < num_sockets; i++)
 734                                         close(fd_listenset[i]);
 735
 736                                 /* close our mDNS daemon handle */
 737                                 dns_register_close(&dns_reg);
 738
 739                                 /* close our standard file
 740                                    descriptors */
 741                                 close_low_fds(False);
 742                                 am_parent = 0;
 743
 744                                 set_socket_options(smbd_server_fd(),"SO_KEEPALIVE");
 745                                 set_socket_options(smbd_server_fd(),
 746                                                    lp_socket_options());
 747
 748                                 /* this is needed so that we get decent entries
 749                                    in smbstatus for port 445 connects */
 750                                 set_remote_machine_name(get_peer_addr(smbd_server_fd(),
 751                                                                 remaddr,
 752                                                                 sizeof(remaddr)),
 753                                                                 false);
 754
 755                                 if (!reinit_after_fork(
 756                                             smbd_messaging_context(),
 757                                             smbd_event_context(),
 758                                             true)) {
 759                                         DEBUG(0,("reinit_after_fork() failed\n"));
 760                                         smb_panic("reinit_after_fork() failed");
 761                                 }
 762
 763                                 return True;
 764                         }
 765                         /* The parent doesn't need this socket */
 766                         close(smbd_server_fd());
 767
 768                         /* Sun May 6 18:56:14 2001 ackley@cs.unm.edu:
 769                                 Clear the closed fd info out of server_fd --
 770                                 and more importantly, out of client_fd in
 771                                 util_sock.c, to avoid a possible
 772                                 getpeername failure if we reopen the logs
 773                                 and use %I in the filename.
 774                         */
 775
 776                         smbd_set_server_fd(-1);
 777
 778                         if (child != 0) {
 779                                 add_child_pid(child);
 780                         }
 781
 782                         /* Force parent to check log size after
 783                          * spawning child.  Fix from
 784                          * klausr@ITAP.Physik.Uni-Stuttgart.De.  The
 785                          * parent smbd will log to logserver.smb.  It
 786                          * writes only two messages for each child
 787                          * started/finished. But each child writes,
 788                          * say, 50 messages also in logserver.smb,
 789                          * begining with the debug_count of the
 790                          * parent, before the child opens its own log
 791                          * file logserver.client. In a worst case
 792                          * scenario the size of logserver.smb would be
 793                          * checked after about 50*50=2500 messages
 794                          * (ca. 100kb).
 795                          * */
 796                         force_check_log_size();
 797
 798                 } /* end for num */
 799         } /* end while 1 */
 800
 801 /* NOTREACHED   return True; */
 802 }
 803
 804 /****************************************************************************
 805  Reload printers
 806 **************************************************************************/
 807 void reload_printers(void)
 808 {
 809         int snum;
 810         int n_services = lp_numservices();
 811         int pnum = lp_servicenumber(PRINTERS_NAME);
 812         const char *pname;
 813
 814         pcap_cache_reload();
 815
 816         /* remove stale printers */
 817         for (snum = 0; snum < n_services; snum++) {
 818                 /* avoid removing PRINTERS_NAME or non-autoloaded printers */
 819                 if (snum == pnum || !(lp_snum_ok(snum) && lp_print_ok(snum) &&
 820                                       lp_autoloaded(snum)))
 821                         continue;
 822
 823                 pname = lp_printername(snum);
 824                 if (!pcap_printername_ok(pname)) {
 825                         DEBUG(3, ("removing stale printer %s\n", pname));
 826
 827                         if (is_printer_published(NULL, snum, NULL))
 828                                 nt_printer_publish(NULL, snum, SPOOL_DS_UNPUBLISH);
 829                         del_a_printer(pname);
 830                         lp_killservice(snum);
 831                 }
 832         }
 833
 834         load_printers();
 835 }
 836
 837 /****************************************************************************
 838  Reload the services file.
 839 **************************************************************************/
 840
 841 bool reload_services(bool test)
 842 {
 843         bool ret;
 844
 845         if (lp_loaded()) {
 846                 char *fname = lp_configfile();
 847                 if (file_exist(fname) &&
 848                     !strcsequal(fname, get_dyn_CONFIGFILE())) {
 849                         set_dyn_CONFIGFILE(fname);
 850                         test = False;
 851                 }
 852         }
 853
 854         reopen_logs();
 855
 856         if (test && !lp_file_list_changed())
 857                 return(True);
 858
 859         lp_killunused(conn_snum_used);
 860
 861         ret = lp_load(get_dyn_CONFIGFILE(), False, False, True, True);
 862
 863         reload_printers();
 864
 865         /* perhaps the config filename is now set */
 866         if (!test)
 867                 reload_services(True);
 868
 869         reopen_logs();
 870
 871         load_interfaces();
 872
 873         if (smbd_server_fd() != -1) {
 874                 set_socket_options(smbd_server_fd(),"SO_KEEPALIVE");
 875                 set_socket_options(smbd_server_fd(), lp_socket_options());
 876         }
 877
 878         mangle_reset_cache();
 879         reset_stat_cache();
 880
 881         /* this forces service parameters to be flushed */
 882         set_current_service(NULL,0,True);
 883
 884         return(ret);
 885 }
 886
 887 /****************************************************************************
 888  Exit the server.
 889 ****************************************************************************/
 890
 891 /* Reasons for shutting down a server process. */
 892 enum server_exit_reason { SERVER_EXIT_NORMAL, SERVER_EXIT_ABNORMAL };
 893
 894 static void exit_server_common(enum server_exit_reason how,
 895         const char *const reason) _NORETURN_;
 896
 897 static void exit_server_common(enum server_exit_reason how,
 898         const char *const reason)
 899 {
 900         static int firsttime=1;
 901         bool had_open_conn;
 902
 903         if (!firsttime)
 904                 exit(0);
 905         firsttime = 0;
 906
 907         change_to_root_user();
 908
 909         if (negprot_global_auth_context) {
 910                 (negprot_global_auth_context->free)(&negprot_global_auth_context);
 911         }
 912
 913         had_open_conn = conn_close_all();
 914
 915         invalidate_all_vuids();
 916
 917         /* 3 second timeout. */
 918         print_notify_send_messages(smbd_messaging_context(), 3);
 919
 920         /* delete our entry in the connections database. */
 921         yield_connection(NULL,"");
 922
 923         respond_to_all_remaining_local_messages();
 924
 925 #ifdef WITH_DFS
 926         if (dcelogin_atmost_once) {
 927                 dfs_unlogin();
 928         }
 929 #endif
 930
 931 #ifdef USE_DMAPI
 932         /* Destroy Samba DMAPI session only if we are master smbd process */
 933         if (am_parent) {
 934                 if (!dmapi_destroy_session()) {
 935                         DEBUG(0,("Unable to close Samba DMAPI session\n"));
 936                 }
 937         }
 938 #endif
 939
 940         locking_end();
 941         printing_end();
 942
 943         if (how != SERVER_EXIT_NORMAL) {
 944                 int oldlevel = DEBUGLEVEL;
 945
 946                 DEBUGLEVEL = 10;
 947
 948                 DEBUGSEP(0);
 949                 DEBUG(0,("Abnormal server exit: %s\n",
 950                         reason ? reason : "no explanation provided"));
 951                 DEBUGSEP(0);
 952
 953                 log_stack_trace();
 954
 955                 DEBUGLEVEL = oldlevel;
 956                 dump_core();
 957
 958         } else {
 959                 DEBUG(3,("Server exit (%s)\n",
 960                         (reason ? reason : "normal exit")));
 961         }
 962
 963         /* if we had any open SMB connections when we exited then we
 964            need to tell the parent smbd so that it can trigger a retry
 965            of any locks we may have been holding or open files we were
 966            blocking */
 967         if (had_open_conn) {
 968                 exit(1);
 969         } else {
 970                 exit(0);
 971         }
 972 }
 973
 974 void exit_server(const char *const explanation)
 975 {
 976         exit_server_common(SERVER_EXIT_ABNORMAL, explanation);
 977 }
 978
 979 void exit_server_cleanly(const char *const explanation)
 980 {
 981         exit_server_common(SERVER_EXIT_NORMAL, explanation);
 982 }
 983
 984 void exit_server_fault(void)
 985 {
 986         exit_server("critical server fault");
 987 }
 988
 989
 990 /****************************************************************************
 991 received when we should release a specific IP
 992 ****************************************************************************/
 993 static void release_ip(const char *ip, void *priv)
 994 {
 995         char addr[INET6_ADDRSTRLEN];
 996
 997         if (strcmp(client_socket_addr(get_client_fd(),addr,sizeof(addr)), ip) == 0) {
 998                 /* we can't afford to do a clean exit - that involves
 999                    database writes, which would potentially mean we
1000                    are still running after the failover has finished -
1001                    we have to get rid of this process ID straight
1002                    away */
1003                 DEBUG(0,("Got release IP message for our IP %s - exiting immediately\n",
1004                         ip));
1005                 /* note we must exit with non-zero status so the unclean handler gets
1006                    called in the parent, so that the brl database is tickled */
1007                 _exit(1);
1008         }
1009 }
1010
1011 static void msg_release_ip(struct messaging_context *msg_ctx, void *private_data,
1012                            uint32_t msg_type, struct server_id server_id, DATA_BLOB *data)
1013 {
1014         release_ip((char *)data->data, NULL);
1015 }
1016
1017 /****************************************************************************
1018  Initialise connect, service and file structs.
1019 ****************************************************************************/
1020
1021 static bool init_structs(void )
1022 {
1023         /*
1024          * Set the machine NETBIOS name if not already
1025          * set from the config file.
1026          */
1027
1028         if (!init_names())
1029                 return False;
1030
1031         conn_init();
1032
1033         file_init();
1034
1035         /* for RPC pipes */
1036         init_rpc_pipe_hnd();
1037
1038         init_dptrs();
1039
1040         if (!secrets_init())
1041                 return False;
1042
1043         return True;
1044 }
1045
1046 /*
1047  * Send keepalive packets to our client
1048  */
1049 static bool keepalive_fn(const struct timeval *now, void *private_data)
1050 {
1051         if (!send_keepalive(smbd_server_fd())) {
1052                 DEBUG( 2, ( "Keepalive failed - exiting.\n" ) );
1053                 return False;
1054         }
1055         return True;
1056 }
1057
1058 /*
1059  * Do the recurring check if we're idle
1060  */
1061 static bool deadtime_fn(const struct timeval *now, void *private_data)
1062 {
1063         if ((conn_num_open() == 0)
1064             || (conn_idle_all(now->tv_sec))) {
1065                 DEBUG( 2, ( "Closing idle connection\n" ) );
1066                 messaging_send(smbd_messaging_context(), procid_self(),
1067                                MSG_SHUTDOWN, &data_blob_null);
1068                 return False;
1069         }
1070
1071         return True;
1072 }
1073
1074 /*
1075  * Do the recurring log file and smb.conf reload checks.
1076  */
1077
1078 static bool housekeeping_fn(const struct timeval *now, void *private_data)
1079 {
1080         change_to_root_user();
1081
1082         /* update printer queue caches if necessary */
1083         update_monitored_printq_cache();
1084
1085         /* check if we need to reload services */
1086         check_reload(time(NULL));
1087
1088         /* Change machine password if neccessary. */
1089         attempt_machine_password_change();
1090
1091         /*
1092          * Force a log file check.
1093          */
1094         force_check_log_size();
1095         check_log_size();
1096         return true;
1097 }
1098
1099 /****************************************************************************
1100  main program.
1101 ****************************************************************************/
1102
1103 /* Declare prototype for build_options() to avoid having to run it through
1104    mkproto.h.  Mixing $(builddir) and $(srcdir) source files in the current
1105    prototype generation system is too complicated. */
1106
1107 extern void build_options(bool screen);
1108
1109  int main(int argc,const char *argv[])
1110 {
1111         /* shall I run as a daemon */
1112         static bool is_daemon = False;
1113         static bool interactive = False;
1114         static bool Fork = True;
1115         static bool no_process_group = False;
1116         static bool log_stdout = False;
1117         static char *ports = NULL;
1118         static char *profile_level = NULL;
1119         int opt;
1120         poptContext pc;
1121         bool print_build_options = False;
1122         enum {
1123                 OPT_DAEMON = 1000,
1124                 OPT_INTERACTIVE,
1125                 OPT_FORK,
1126                 OPT_NO_PROCESS_GROUP,
1127                 OPT_LOG_STDOUT
1128         };
1129         struct poptOption long_options[] = {
1130         POPT_AUTOHELP
1131         {"daemon", 'D', POPT_ARG_NONE, NULL, OPT_DAEMON, "Become a daemon (default)" },
1132         {"interactive", 'i', POPT_ARG_NONE, NULL, OPT_INTERACTIVE, "Run interactive (not a daemon)"},
1133         {"foreground", 'F', POPT_ARG_NONE, NULL, OPT_FORK, "Run daemon in foreground (for daemontools, etc.)" },
1134         {"no-process-group", '\0', POPT_ARG_NONE, NULL, OPT_NO_PROCESS_GROUP, "Don't create a new process group" },
1135         {"log-stdout", 'S', POPT_ARG_NONE, NULL, OPT_LOG_STDOUT, "Log to stdout" },
1136         {"build-options", 'b', POPT_ARG_NONE, NULL, 'b', "Print build options" },
1137         {"port", 'p', POPT_ARG_STRING, &ports, 0, "Listen on the specified ports"},
1138         {"profiling-level", 'P', POPT_ARG_STRING, &profile_level, 0, "Set profiling level","PROFILE_LEVEL"},
1139         POPT_COMMON_SAMBA
1140         POPT_COMMON_DYNCONFIG
1141         POPT_TABLEEND
1142         };
1143         TALLOC_CTX *frame = talloc_stackframe(); /* Setup tos. */
1144
1145         TimeInit();
1146
1147 #ifdef HAVE_SET_AUTH_PARAMETERS
1148         set_auth_parameters(argc,argv);
1149 #endif
1150
1151         pc = poptGetContext("smbd", argc, argv, long_options, 0);
1152         while((opt = poptGetNextOpt(pc)) != -1) {
1153                 switch (opt)  {
1154                 case OPT_DAEMON:
1155                         is_daemon = true;
1156                         break;
1157                 case OPT_INTERACTIVE:
1158                         interactive = true;
1159                         break;
1160                 case OPT_FORK:
1161                         Fork = false;
1162                         break;
1163                 case OPT_NO_PROCESS_GROUP:
1164                         no_process_group = true;
1165                         break;
1166                 case OPT_LOG_STDOUT:
1167                         log_stdout = true;
1168                         break;
1169                 case 'b':
1170                         print_build_options = True;
1171                         break;
1172                 default:
1173                         d_fprintf(stderr, "\nInvalid option %s: %s\n\n",
1174                                   poptBadOption(pc, 0), poptStrerror(opt));
1175                         poptPrintUsage(pc, stderr, 0);
1176                         exit(1);
1177                 }
1178         }
1179         poptFreeContext(pc);
1180
1181         if (interactive) {
1182                 Fork = False;
1183                 log_stdout = True;
1184         }
1185
1186         setup_logging(argv[0],log_stdout);
1187
1188         if (print_build_options) {
1189                 build_options(True); /* Display output to screen as well as debug */
1190                 exit(0);
1191         }
1192
1193         load_case_tables();
1194
1195 #ifdef HAVE_SETLUID
1196         /* needed for SecureWare on SCO */
1197         setluid(0);
1198 #endif
1199
1200         sec_init();
1201
1202         set_remote_machine_name("smbd", False);
1203
1204         if (interactive && (DEBUGLEVEL >= 9)) {
1205                 talloc_enable_leak_report();
1206         }
1207
1208         if (log_stdout && Fork) {
1209                 DEBUG(0,("ERROR: Can't log to stdout (-S) unless daemon is in foreground (-F) or interactive (-i)\n"));
1210                 exit(1);
1211         }
1212
1213         /* we want to re-seed early to prevent time delays causing
1214            client problems at a later date. (tridge) */
1215         generate_random_buffer(NULL, 0);
1216
1217         /* make absolutely sure we run as root - to handle cases where people
1218            are crazy enough to have it setuid */
1219
1220         gain_root_privilege();
1221         gain_root_group_privilege();
1222
1223         fault_setup((void (*)(void *))exit_server_fault);
1224         dump_core_setup("smbd");
1225
1226         CatchSignal(SIGTERM , SIGNAL_CAST sig_term);
1227         CatchSignal(SIGHUP,SIGNAL_CAST sig_hup);
1228
1229         /* we are never interested in SIGPIPE */
1230         BlockSignals(True,SIGPIPE);
1231
1232 #if defined(SIGFPE)
1233         /* we are never interested in SIGFPE */
1234         BlockSignals(True,SIGFPE);
1235 #endif
1236
1237 #if defined(SIGUSR2)
1238         /* We are no longer interested in USR2 */
1239         BlockSignals(True,SIGUSR2);
1240 #endif
1241
1242         /* POSIX demands that signals are inherited. If the invoking process has
1243          * these signals masked, we will have problems, as we won't recieve them. */
1244         BlockSignals(False, SIGHUP);
1245         BlockSignals(False, SIGUSR1);
1246         BlockSignals(False, SIGTERM);
1247
1248         /* we want total control over the permissions on created files,
1249            so set our umask to 0 */
1250         umask(0);
1251
1252         init_sec_ctx();
1253
1254         reopen_logs();
1255
1256         DEBUG(0,("smbd version %s started.\n", SAMBA_VERSION_STRING));
1257         DEBUGADD(0,("%s\n", COPYRIGHT_STARTUP_MESSAGE));
1258
1259         DEBUG(2,("uid=%d gid=%d euid=%d egid=%d\n",
1260                  (int)getuid(),(int)getgid(),(int)geteuid(),(int)getegid()));
1261
1262         /* Output the build options to the debug log */
1263         build_options(False);
1264
1265         if (sizeof(uint16) < 2 || sizeof(uint32) < 4) {
1266                 DEBUG(0,("ERROR: Samba is not configured correctly for the word size on your machine\n"));
1267                 exit(1);
1268         }
1269
1270         if (!lp_load_initial_only(get_dyn_CONFIGFILE())) {
1271                 DEBUG(0, ("error opening config file\n"));
1272                 exit(1);
1273         }
1274
1275         if (smbd_messaging_context() == NULL)
1276                 exit(1);
1277
1278         if (!reload_services(False))
1279                 return(-1);
1280
1281         init_structs();
1282
1283 #ifdef WITH_PROFILE
1284         if (!profile_setup(smbd_messaging_context(), False)) {
1285                 DEBUG(0,("ERROR: failed to setup profiling\n"));
1286                 return -1;
1287         }
1288         if (profile_level != NULL) {
1289                 int pl = atoi(profile_level);
1290                 struct server_id src;
1291
1292                 DEBUG(1, ("setting profiling level: %s\n",profile_level));
1293                 src.pid = getpid();
1294                 set_profile_level(pl, src);
1295         }
1296 #endif
1297
1298         DEBUG(3,( "loaded services\n"));
1299
1300         if (!is_daemon && !is_a_socket(0)) {
1301                 if (!interactive)
1302                         DEBUG(0,("standard input is not a socket, assuming -D option\n"));
1303
1304                 /*
1305                  * Setting is_daemon here prevents us from eventually calling
1306                  * the open_sockets_inetd()
1307                  */
1308
1309                 is_daemon = True;
1310         }
1311
1312         if (is_daemon && !interactive) {
1313                 DEBUG( 3, ( "Becoming a daemon.\n" ) );
1314                 become_daemon(Fork, no_process_group);
1315         }
1316
1317 #if HAVE_SETPGID
1318         /*
1319          * If we're interactive we want to set our own process group for
1320          * signal management.
1321          */
1322         if (interactive && !no_process_group)
1323                 setpgid( (pid_t)0, (pid_t)0);
1324 #endif
1325
1326         if (!directory_exist(lp_lockdir()))
1327                 mkdir(lp_lockdir(), 0755);
1328
1329         if (is_daemon)
1330                 pidfile_create("smbd");
1331
1332         if (!reinit_after_fork(smbd_messaging_context(),
1333                                smbd_event_context(), false)) {
1334                 DEBUG(0,("reinit_after_fork() failed\n"));
1335                 exit(1);
1336         }
1337
1338         /* Setup all the TDB's - including CLEAR_IF_FIRST tdb's. */
1339
1340         if (smbd_memcache() == NULL) {
1341                 exit(1);
1342         }
1343
1344         memcache_set_global(smbd_memcache());
1345
1346         /* Initialise the password backed before the global_sam_sid
1347            to ensure that we fetch from ldap before we make a domain sid up */
1348
1349         if(!initialize_password_db(False, smbd_event_context()))
1350                 exit(1);
1351
1352         if (!secrets_init()) {
1353                 DEBUG(0, ("ERROR: smbd can not open secrets.tdb\n"));
1354                 exit(1);
1355         }
1356
1357         if(!get_global_sam_sid()) {
1358                 DEBUG(0,("ERROR: Samba cannot create a SAM SID.\n"));
1359                 exit(1);
1360         }
1361
1362         if (!session_init())
1363                 exit(1);
1364
1365         if (!connections_init(True))
1366                 exit(1);
1367
1368         if (!locking_init())
1369                 exit(1);
1370
1371         namecache_enable();
1372
1373         if (!W_ERROR_IS_OK(registry_init_full()))
1374                 exit(1);
1375
1376 #if 0
1377         if (!init_svcctl_db())
1378                 exit(1);
1379 #endif
1380
1381         if (!print_backend_init(smbd_messaging_context()))
1382                 exit(1);
1383
1384         if (!init_guest_info()) {
1385                 DEBUG(0,("ERROR: failed to setup guest info.\n"));
1386                 return -1;
1387         }
1388
1389         /* only start the background queue daemon if we are
1390            running as a daemon -- bad things will happen if
1391            smbd is launched via inetd and we fork a copy of
1392            ourselves here */
1393
1394         if (is_daemon && !interactive
1395             && lp_parm_bool(-1, "smbd", "backgroundqueue", true)) {
1396                 start_background_queue();
1397         }
1398
1399         if (!open_sockets_smbd(is_daemon, interactive, ports))
1400                 exit(1);
1401
1402         /*
1403          * everything after this point is run after the fork()
1404          */
1405
1406         static_init_rpc;
1407
1408         init_modules();
1409
1410         /* Possibly reload the services file. Only worth doing in
1411          * daemon mode. In inetd mode, we know we only just loaded this.
1412          */
1413         if (is_daemon) {
1414                 reload_services(True);
1415         }
1416
1417         if (!init_account_policy()) {
1418                 DEBUG(0,("Could not open account policy tdb.\n"));
1419                 exit(1);
1420         }
1421
1422         if (*lp_rootdir()) {
1423                 if (chroot(lp_rootdir()) == 0)
1424                         DEBUG(2,("Changed root to %s\n", lp_rootdir()));
1425         }
1426
1427         /* Setup oplocks */
1428         if (!init_oplocks(smbd_messaging_context()))
1429                 exit(1);
1430
1431         /* Setup aio signal handler. */
1432         initialize_async_io_handler();
1433
1434         /* register our message handlers */
1435         messaging_register(smbd_messaging_context(), NULL,
1436                            MSG_SMB_FORCE_TDIS, msg_force_tdis);
1437         messaging_register(smbd_messaging_context(), NULL,
1438                            MSG_SMB_RELEASE_IP, msg_release_ip);
1439         messaging_register(smbd_messaging_context(), NULL,
1440                            MSG_SMB_CLOSE_FILE, msg_close_file);
1441
1442         if ((lp_keepalive() != 0)
1443             && !(event_add_idle(smbd_event_context(), NULL,
1444                                 timeval_set(lp_keepalive(), 0),
1445                                 "keepalive", keepalive_fn,
1446                                 NULL))) {
1447                 DEBUG(0, ("Could not add keepalive event\n"));
1448                 exit(1);
1449         }
1450
1451         if (!(event_add_idle(smbd_event_context(), NULL,
1452                              timeval_set(IDLE_CLOSED_TIMEOUT, 0),
1453                              "deadtime", deadtime_fn, NULL))) {
1454                 DEBUG(0, ("Could not add deadtime event\n"));
1455                 exit(1);
1456         }
1457
1458         if (!(event_add_idle(smbd_event_context(), NULL,
1459                              timeval_set(SMBD_SELECT_TIMEOUT, 0),
1460                              "housekeeping", housekeeping_fn, NULL))) {
1461                 DEBUG(0, ("Could not add housekeeping event\n"));
1462                 exit(1);
1463         }
1464
1465 #ifdef CLUSTER_SUPPORT
1466
1467         if (lp_clustering()) {
1468                 /*
1469                  * We need to tell ctdb about our client's TCP
1470                  * connection, so that for failover ctdbd can send
1471                  * tickle acks, triggering a reconnection by the
1472                  * client.
1473                  */
1474
1475                 struct sockaddr_storage srv, clnt;
1476
1477                 if (client_get_tcp_info(&srv, &clnt) == 0) {
1478
1479                         NTSTATUS status;
1480
1481                         status = ctdbd_register_ips(
1482                                 messaging_ctdbd_connection(),
1483                                 (struct sockaddr *)&srv,
1484                                 (struct sockaddr *)&clnt,
1485                                 release_ip, NULL);
1486
1487                         if (!NT_STATUS_IS_OK(status)) {
1488                                 DEBUG(0, ("ctdbd_register_ips failed: %s\n",
1489                                           nt_errstr(status)));
1490                         }
1491                 } else
1492                 {
1493                         DEBUG(0,("Unable to get tcp info for "
1494                                  "CTDB_CONTROL_TCP_CLIENT: %s\n",
1495                                  strerror(errno)));
1496                 }
1497         }
1498
1499 #endif
1500
1501         TALLOC_FREE(frame);
1502
1503         smbd_process();
1504
1505         namecache_shutdown();
1506
1507         exit_server_cleanly(NULL);
1508         return(0);
1509 }