source/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", (unsigned int)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         /* Kick off our mDNS registration. */
 592         if (dns_port != 0) {
 593 #ifdef WITH_DNSSD_SUPPORT
 594                 dns_register_smbd(&dns_reg, dns_port, &maxfd,
 595                                   &r_fds, &idle_timeout);
 596 #endif
 597 #ifdef WITH_AVAHI_SUPPORT
 598                 void *avahi_conn;
 599                 avahi_conn = avahi_start_register(
 600                         smbd_event_context(), smbd_event_context(),
 601                         dns_port);
 602                 if (avahi_conn == NULL) {
 603                         DEBUG(10, ("avahi_start_register failed\n"));
 604                 }
 605 #endif
 606         }
 607
 608         /* now accept incoming connections - forking a new process
 609            for each incoming connection */
 610         DEBUG(2,("waiting for a connection\n"));
 611         while (1) {
 612                 struct timeval now, idle_timeout;
 613                 fd_set r_fds, w_fds;
 614                 int num;
 615
 616                 /* Ensure we respond to PING and DEBUG messages from the main smbd. */
 617                 message_dispatch(smbd_messaging_context());
 618
 619                 if (got_sig_cld) {
 620                         pid_t pid;
 621                         int status;
 622
 623                         got_sig_cld = False;
 624
 625                         while ((pid = sys_waitpid(-1, &status, WNOHANG)) > 0) {
 626                                 bool unclean_shutdown = False;
 627
 628                                 /* If the child terminated normally, assume
 629                                    it was an unclean shutdown unless the
 630                                    status is 0
 631                                 */
 632                                 if (WIFEXITED(status)) {
 633                                         unclean_shutdown = WEXITSTATUS(status);
 634                                 }
 635                                 /* If the child terminated due to a signal
 636                                    we always assume it was unclean.
 637                                 */
 638                                 if (WIFSIGNALED(status)) {
 639                                         unclean_shutdown = True;
 640                                 }
 641                                 remove_child_pid(pid, unclean_shutdown);
 642                         }
 643                 }
 644
 645                 idle_timeout = timeval_zero();
 646
 647                 memcpy((char *)&r_fds, (char *)&listen_set,
 648                        sizeof(listen_set));
 649                 FD_ZERO(&w_fds);
 650                 GetTimeOfDay(&now);
 651
 652                 event_add_to_select_args(smbd_event_context(), &now,
 653                                          &r_fds, &w_fds, &idle_timeout,
 654                                          &maxfd);
 655
 656                 num = sys_select(maxfd+1,&r_fds,&w_fds,NULL,
 657                                  timeval_is_zero(&idle_timeout) ?
 658                                  NULL : &idle_timeout);
 659
 660                 if (num == -1 && errno == EINTR) {
 661                         if (got_sig_term) {
 662                                 exit_server_cleanly(NULL);
 663                         }
 664
 665                         /* check for sighup processing */
 666                         if (reload_after_sighup) {
 667                                 change_to_root_user();
 668                                 DEBUG(1,("Reloading services after SIGHUP\n"));
 669                                 reload_services(False);
 670                                 reload_after_sighup = 0;
 671                         }
 672
 673                         continue;
 674                 }
 675
 676
 677                 /* If the idle timeout fired and we don't have any connected
 678                  * users, exit gracefully. We should be running under a process
 679                  * controller that will restart us if necessry.
 680                  */
 681                 if (num == 0 && count_all_current_connections() == 0) {
 682                         exit_server_cleanly("idle timeout");
 683                 }
 684
 685                 /* process pending nDNS responses */
 686                 if (dns_register_smbd_reply(dns_reg, &r_fds, &idle_timeout)) {
 687                         --num;
 688                 }
 689
 690                 if (run_events(smbd_event_context(), num, &r_fds, &w_fds)) {
 691                         continue;
 692                 }
 693
 694                 /* check if we need to reload services */
 695                 check_reload(time(NULL));
 696
 697                 /* Find the sockets that are read-ready -
 698                    accept on these. */
 699                 for( ; num > 0; num--) {
 700                         struct sockaddr addr;
 701                         socklen_t in_addrlen = sizeof(addr);
 702                         pid_t child = 0;
 703
 704                         s = -1;
 705                         for(i = 0; i < num_sockets; i++) {
 706                                 if(FD_ISSET(fd_listenset[i],&r_fds)) {
 707                                         s = fd_listenset[i];
 708                                         /* Clear this so we don't look
 709                                            at it again. */
 710                                         FD_CLR(fd_listenset[i],&r_fds);
 711                                         break;
 712                                 }
 713                         }
 714
 715                         smbd_set_server_fd(accept(s,&addr,&in_addrlen));
 716
 717                         if (smbd_server_fd() == -1 && errno == EINTR)
 718                                 continue;
 719
 720                         if (smbd_server_fd() == -1) {
 721                                 DEBUG(2,("open_sockets_smbd: accept: %s\n",
 722                                          strerror(errno)));
 723                                 continue;
 724                         }
 725
 726                         /* Ensure child is set to blocking mode */
 727                         set_blocking(smbd_server_fd(),True);
 728
 729                         if (smbd_server_fd() != -1 && interactive)
 730                                 return True;
 731
 732                         if (allowable_number_of_smbd_processes() &&
 733                             smbd_server_fd() != -1 &&
 734                             ((child = sys_fork())==0)) {
 735                                 char remaddr[INET6_ADDRSTRLEN];
 736
 737                                 /* Child code ... */
 738
 739                                 /* Stop zombies, the parent explicitly handles
 740                                  * them, counting worker smbds. */
 741                                 CatchChild();
 742
 743                                 /* close the listening socket(s) */
 744                                 for(i = 0; i < num_sockets; i++)
 745                                         close(fd_listenset[i]);
 746
 747                                 /* close our mDNS daemon handle */
 748                                 dns_register_close(&dns_reg);
 749
 750                                 /* close our standard file
 751                                    descriptors */
 752                                 close_low_fds(False);
 753                                 am_parent = 0;
 754
 755                                 set_socket_options(smbd_server_fd(),"SO_KEEPALIVE");
 756                                 set_socket_options(smbd_server_fd(),
 757                                                    lp_socket_options());
 758
 759                                 /* this is needed so that we get decent entries
 760                                    in smbstatus for port 445 connects */
 761                                 set_remote_machine_name(get_peer_addr(smbd_server_fd(),
 762                                                                 remaddr,
 763                                                                 sizeof(remaddr)),
 764                                                                 false);
 765
 766                                 if (!reinit_after_fork(
 767                                             smbd_messaging_context(),
 768                                             smbd_event_context(),
 769                                             true)) {
 770                                         DEBUG(0,("reinit_after_fork() failed\n"));
 771                                         smb_panic("reinit_after_fork() failed");
 772                                 }
 773
 774                                 return True;
 775                         }
 776                         /* The parent doesn't need this socket */
 777                         close(smbd_server_fd());
 778
 779                         /* Sun May 6 18:56:14 2001 ackley@cs.unm.edu:
 780                                 Clear the closed fd info out of server_fd --
 781                                 and more importantly, out of client_fd in
 782                                 util_sock.c, to avoid a possible
 783                                 getpeername failure if we reopen the logs
 784                                 and use %I in the filename.
 785                         */
 786
 787                         smbd_set_server_fd(-1);
 788
 789                         if (child != 0) {
 790                                 add_child_pid(child);
 791                         }
 792
 793                         /* Force parent to check log size after
 794                          * spawning child.  Fix from
 795                          * klausr@ITAP.Physik.Uni-Stuttgart.De.  The
 796                          * parent smbd will log to logserver.smb.  It
 797                          * writes only two messages for each child
 798                          * started/finished. But each child writes,
 799                          * say, 50 messages also in logserver.smb,
 800                          * begining with the debug_count of the
 801                          * parent, before the child opens its own log
 802                          * file logserver.client. In a worst case
 803                          * scenario the size of logserver.smb would be
 804                          * checked after about 50*50=2500 messages
 805                          * (ca. 100kb).
 806                          * */
 807                         force_check_log_size();
 808
 809                 } /* end for num */
 810         } /* end while 1 */
 811
 812 /* NOTREACHED   return True; */
 813 }
 814
 815 /****************************************************************************
 816  Reload printers
 817 **************************************************************************/
 818 void reload_printers(void)
 819 {
 820         int snum;
 821         int n_services = lp_numservices();
 822         int pnum = lp_servicenumber(PRINTERS_NAME);
 823         const char *pname;
 824
 825         pcap_cache_reload();
 826
 827         /* remove stale printers */
 828         for (snum = 0; snum < n_services; snum++) {
 829                 /* avoid removing PRINTERS_NAME or non-autoloaded printers */
 830                 if (snum == pnum || !(lp_snum_ok(snum) && lp_print_ok(snum) &&
 831                                       lp_autoloaded(snum)))
 832                         continue;
 833
 834                 pname = lp_printername(snum);
 835                 if (!pcap_printername_ok(pname)) {
 836                         DEBUG(3, ("removing stale printer %s\n", pname));
 837
 838                         if (is_printer_published(NULL, snum, NULL))
 839                                 nt_printer_publish(NULL, snum, SPOOL_DS_UNPUBLISH);
 840                         del_a_printer(pname);
 841                         lp_killservice(snum);
 842                 }
 843         }
 844
 845         load_printers();
 846 }
 847
 848 /****************************************************************************
 849  Reload the services file.
 850 **************************************************************************/
 851
 852 bool reload_services(bool test)
 853 {
 854         bool ret;
 855
 856         if (lp_loaded()) {
 857                 char *fname = lp_configfile();
 858                 if (file_exist(fname, NULL) &&
 859                     !strcsequal(fname, get_dyn_CONFIGFILE())) {
 860                         set_dyn_CONFIGFILE(fname);
 861                         test = False;
 862                 }
 863         }
 864
 865         reopen_logs();
 866
 867         if (test && !lp_file_list_changed())
 868                 return(True);
 869
 870         lp_killunused(conn_snum_used);
 871
 872         ret = lp_load(get_dyn_CONFIGFILE(), False, False, True, True);
 873
 874         reload_printers();
 875
 876         /* perhaps the config filename is now set */
 877         if (!test)
 878                 reload_services(True);
 879
 880         reopen_logs();
 881
 882         load_interfaces();
 883
 884         if (smbd_server_fd() != -1) {
 885                 set_socket_options(smbd_server_fd(),"SO_KEEPALIVE");
 886                 set_socket_options(smbd_server_fd(), lp_socket_options());
 887         }
 888
 889         mangle_reset_cache();
 890         reset_stat_cache();
 891
 892         /* this forces service parameters to be flushed */
 893         set_current_service(NULL,0,True);
 894
 895         return(ret);
 896 }
 897
 898 /****************************************************************************
 899  Exit the server.
 900 ****************************************************************************/
 901
 902 /* Reasons for shutting down a server process. */
 903 enum server_exit_reason { SERVER_EXIT_NORMAL, SERVER_EXIT_ABNORMAL };
 904
 905 static void exit_server_common(enum server_exit_reason how,
 906         const char *const reason) NORETURN_ATTRIBUTE;
 907
 908 static void exit_server_common(enum server_exit_reason how,
 909         const char *const reason)
 910 {
 911         static int firsttime=1;
 912         bool had_open_conn;
 913
 914         if (!firsttime)
 915                 exit(0);
 916         firsttime = 0;
 917
 918         change_to_root_user();
 919
 920         if (negprot_global_auth_context) {
 921                 (negprot_global_auth_context->free)(&negprot_global_auth_context);
 922         }
 923
 924         had_open_conn = conn_close_all();
 925
 926         invalidate_all_vuids();
 927
 928         /* 3 second timeout. */
 929         print_notify_send_messages(smbd_messaging_context(), 3);
 930
 931         /* delete our entry in the connections database. */
 932         yield_connection(NULL,"");
 933
 934         respond_to_all_remaining_local_messages();
 935
 936 #ifdef WITH_DFS
 937         if (dcelogin_atmost_once) {
 938                 dfs_unlogin();
 939         }
 940 #endif
 941
 942 #ifdef USE_DMAPI
 943         /* Destroy Samba DMAPI session only if we are master smbd process */
 944         if (am_parent) {
 945                 if (!dmapi_destroy_session()) {
 946                         DEBUG(0,("Unable to close Samba DMAPI session\n"));
 947                 }
 948         }
 949 #endif
 950
 951         locking_end();
 952         printing_end();
 953
 954         if (how != SERVER_EXIT_NORMAL) {
 955                 int oldlevel = DEBUGLEVEL;
 956
 957                 DEBUGLEVEL = 10;
 958
 959                 DEBUGSEP(0);
 960                 DEBUG(0,("Abnormal server exit: %s\n",
 961                         reason ? reason : "no explanation provided"));
 962                 DEBUGSEP(0);
 963
 964                 log_stack_trace();
 965
 966                 DEBUGLEVEL = oldlevel;
 967                 dump_core();
 968
 969         } else {
 970                 DEBUG(3,("Server exit (%s)\n",
 971                         (reason ? reason : "normal exit")));
 972         }
 973
 974         /* if we had any open SMB connections when we exited then we
 975            need to tell the parent smbd so that it can trigger a retry
 976            of any locks we may have been holding or open files we were
 977            blocking */
 978         if (had_open_conn) {
 979                 exit(1);
 980         } else {
 981                 exit(0);
 982         }
 983 }
 984
 985 void exit_server(const char *const explanation)
 986 {
 987         exit_server_common(SERVER_EXIT_ABNORMAL, explanation);
 988 }
 989
 990 void exit_server_cleanly(const char *const explanation)
 991 {
 992         exit_server_common(SERVER_EXIT_NORMAL, explanation);
 993 }
 994
 995 void exit_server_fault(void)
 996 {
 997         exit_server("critical server fault");
 998 }
 999
1000
1001 /****************************************************************************
1002 received when we should release a specific IP
1003 ****************************************************************************/
1004 static void release_ip(const char *ip, void *priv)
1005 {
1006         char addr[INET6_ADDRSTRLEN];
1007
1008         if (strcmp(client_socket_addr(get_client_fd(),addr,sizeof(addr)), ip) == 0) {
1009                 /* we can't afford to do a clean exit - that involves
1010                    database writes, which would potentially mean we
1011                    are still running after the failover has finished -
1012                    we have to get rid of this process ID straight
1013                    away */
1014                 DEBUG(0,("Got release IP message for our IP %s - exiting immediately\n",
1015                         ip));
1016                 /* note we must exit with non-zero status so the unclean handler gets
1017                    called in the parent, so that the brl database is tickled */
1018                 _exit(1);
1019         }
1020 }
1021
1022 static void msg_release_ip(struct messaging_context *msg_ctx, void *private_data,
1023                            uint32_t msg_type, struct server_id server_id, DATA_BLOB *data)
1024 {
1025         release_ip((char *)data->data, NULL);
1026 }
1027
1028 /****************************************************************************
1029  Initialise connect, service and file structs.
1030 ****************************************************************************/
1031
1032 static bool init_structs(void )
1033 {
1034         /*
1035          * Set the machine NETBIOS name if not already
1036          * set from the config file.
1037          */
1038
1039         if (!init_names())
1040                 return False;
1041
1042         conn_init();
1043
1044         file_init();
1045
1046         /* for RPC pipes */
1047         init_rpc_pipe_hnd();
1048
1049         init_dptrs();
1050
1051         if (!secrets_init())
1052                 return False;
1053
1054         return True;
1055 }
1056
1057 /*
1058  * Send keepalive packets to our client
1059  */
1060 static bool keepalive_fn(const struct timeval *now, void *private_data)
1061 {
1062         if (!send_keepalive(smbd_server_fd())) {
1063                 DEBUG( 2, ( "Keepalive failed - exiting.\n" ) );
1064                 return False;
1065         }
1066         return True;
1067 }
1068
1069 /*
1070  * Do the recurring check if we're idle
1071  */
1072 static bool deadtime_fn(const struct timeval *now, void *private_data)
1073 {
1074         if ((conn_num_open() == 0)
1075             || (conn_idle_all(now->tv_sec))) {
1076                 DEBUG( 2, ( "Closing idle connection\n" ) );
1077                 messaging_send(smbd_messaging_context(), procid_self(),
1078                                MSG_SHUTDOWN, &data_blob_null);
1079                 return False;
1080         }
1081
1082         return True;
1083 }
1084
1085 /*
1086  * Do the recurring log file and smb.conf reload checks.
1087  */
1088
1089 static bool housekeeping_fn(const struct timeval *now, void *private_data)
1090 {
1091         change_to_root_user();
1092
1093         /* update printer queue caches if necessary */
1094         update_monitored_printq_cache();
1095
1096         /* check if we need to reload services */
1097         check_reload(time(NULL));
1098
1099         /* Change machine password if neccessary. */
1100         attempt_machine_password_change();
1101
1102         /*
1103          * Force a log file check.
1104          */
1105         force_check_log_size();
1106         check_log_size();
1107         return true;
1108 }
1109
1110 /****************************************************************************
1111  main program.
1112 ****************************************************************************/
1113
1114 /* Declare prototype for build_options() to avoid having to run it through
1115    mkproto.h.  Mixing $(builddir) and $(srcdir) source files in the current
1116    prototype generation system is too complicated. */
1117
1118 extern void build_options(bool screen);
1119
1120  int main(int argc,const char *argv[])
1121 {
1122         /* shall I run as a daemon */
1123         static bool is_daemon = False;
1124         static bool interactive = False;
1125         static bool Fork = True;
1126         static bool no_process_group = False;
1127         static bool log_stdout = False;
1128         static char *ports = NULL;
1129         static char *profile_level = NULL;
1130         int opt;
1131         poptContext pc;
1132         bool print_build_options = False;
1133         enum {
1134                 OPT_DAEMON = 1000,
1135                 OPT_INTERACTIVE,
1136                 OPT_FORK,
1137                 OPT_NO_PROCESS_GROUP,
1138                 OPT_LOG_STDOUT
1139         };
1140         struct poptOption long_options[] = {
1141         POPT_AUTOHELP
1142         {"daemon", 'D', POPT_ARG_NONE, NULL, OPT_DAEMON, "Become a daemon (default)" },
1143         {"interactive", 'i', POPT_ARG_NONE, NULL, OPT_INTERACTIVE, "Run interactive (not a daemon)"},
1144         {"foreground", 'F', POPT_ARG_NONE, NULL, OPT_FORK, "Run daemon in foreground (for daemontools, etc.)" },
1145         {"no-process-group", '\0', POPT_ARG_NONE, NULL, OPT_NO_PROCESS_GROUP, "Don't create a new process group" },
1146         {"log-stdout", 'S', POPT_ARG_NONE, NULL, OPT_LOG_STDOUT, "Log to stdout" },
1147         {"build-options", 'b', POPT_ARG_NONE, NULL, 'b', "Print build options" },
1148         {"port", 'p', POPT_ARG_STRING, &ports, 0, "Listen on the specified ports"},
1149         {"profiling-level", 'P', POPT_ARG_STRING, &profile_level, 0, "Set profiling level","PROFILE_LEVEL"},
1150         POPT_COMMON_SAMBA
1151         POPT_COMMON_DYNCONFIG
1152         POPT_TABLEEND
1153         };
1154         TALLOC_CTX *frame = talloc_stackframe(); /* Setup tos. */
1155
1156         TimeInit();
1157
1158 #ifdef HAVE_SET_AUTH_PARAMETERS
1159         set_auth_parameters(argc,argv);
1160 #endif
1161
1162         pc = poptGetContext("smbd", argc, argv, long_options, 0);
1163         while((opt = poptGetNextOpt(pc)) != -1) {
1164                 switch (opt)  {
1165                 case OPT_DAEMON:
1166                         is_daemon = true;
1167                         break;
1168                 case OPT_INTERACTIVE:
1169                         interactive = true;
1170                         break;
1171                 case OPT_FORK:
1172                         Fork = false;
1173                         break;
1174                 case OPT_NO_PROCESS_GROUP:
1175                         no_process_group = true;
1176                         break;
1177                 case OPT_LOG_STDOUT:
1178                         log_stdout = true;
1179                         break;
1180                 case 'b':
1181                         print_build_options = True;
1182                         break;
1183                 default:
1184                         d_fprintf(stderr, "\nInvalid option %s: %s\n\n",
1185                                   poptBadOption(pc, 0), poptStrerror(opt));
1186                         poptPrintUsage(pc, stderr, 0);
1187                         exit(1);
1188                 }
1189         }
1190         poptFreeContext(pc);
1191
1192         if (interactive) {
1193                 Fork = False;
1194                 log_stdout = True;
1195         }
1196
1197         setup_logging(argv[0],log_stdout);
1198
1199         if (print_build_options) {
1200                 build_options(True); /* Display output to screen as well as debug */
1201                 exit(0);
1202         }
1203
1204         load_case_tables();
1205
1206 #ifdef HAVE_SETLUID
1207         /* needed for SecureWare on SCO */
1208         setluid(0);
1209 #endif
1210
1211         sec_init();
1212
1213         set_remote_machine_name("smbd", False);
1214
1215         if (interactive && (DEBUGLEVEL >= 9)) {
1216                 talloc_enable_leak_report();
1217         }
1218
1219         if (log_stdout && Fork) {
1220                 DEBUG(0,("ERROR: Can't log to stdout (-S) unless daemon is in foreground (-F) or interactive (-i)\n"));
1221                 exit(1);
1222         }
1223
1224         /* we want to re-seed early to prevent time delays causing
1225            client problems at a later date. (tridge) */
1226         generate_random_buffer(NULL, 0);
1227
1228         /* make absolutely sure we run as root - to handle cases where people
1229            are crazy enough to have it setuid */
1230
1231         gain_root_privilege();
1232         gain_root_group_privilege();
1233
1234         fault_setup((void (*)(void *))exit_server_fault);
1235         dump_core_setup("smbd");
1236
1237         CatchSignal(SIGTERM , SIGNAL_CAST sig_term);
1238         CatchSignal(SIGHUP,SIGNAL_CAST sig_hup);
1239
1240         /* we are never interested in SIGPIPE */
1241         BlockSignals(True,SIGPIPE);
1242
1243 #if defined(SIGFPE)
1244         /* we are never interested in SIGFPE */
1245         BlockSignals(True,SIGFPE);
1246 #endif
1247
1248 #if defined(SIGUSR2)
1249         /* We are no longer interested in USR2 */
1250         BlockSignals(True,SIGUSR2);
1251 #endif
1252
1253         /* POSIX demands that signals are inherited. If the invoking process has
1254          * these signals masked, we will have problems, as we won't recieve them. */
1255         BlockSignals(False, SIGHUP);
1256         BlockSignals(False, SIGUSR1);
1257         BlockSignals(False, SIGTERM);
1258
1259         /* we want total control over the permissions on created files,
1260            so set our umask to 0 */
1261         umask(0);
1262
1263         init_sec_ctx();
1264
1265         reopen_logs();
1266
1267         DEBUG(0,("smbd version %s started.\n", SAMBA_VERSION_STRING));
1268         DEBUGADD(0,("%s\n", COPYRIGHT_STARTUP_MESSAGE));
1269
1270         DEBUG(2,("uid=%d gid=%d euid=%d egid=%d\n",
1271                  (int)getuid(),(int)getgid(),(int)geteuid(),(int)getegid()));
1272
1273         /* Output the build options to the debug log */
1274         build_options(False);
1275
1276         if (sizeof(uint16) < 2 || sizeof(uint32) < 4) {
1277                 DEBUG(0,("ERROR: Samba is not configured correctly for the word size on your machine\n"));
1278                 exit(1);
1279         }
1280
1281         if (!lp_load_initial_only(get_dyn_CONFIGFILE())) {
1282                 DEBUG(0, ("error opening config file\n"));
1283                 exit(1);
1284         }
1285
1286         if (smbd_messaging_context() == NULL)
1287                 exit(1);
1288
1289         if (!reload_services(False))
1290                 return(-1);
1291
1292         init_structs();
1293
1294 #ifdef WITH_PROFILE
1295         if (!profile_setup(smbd_messaging_context(), False)) {
1296                 DEBUG(0,("ERROR: failed to setup profiling\n"));
1297                 return -1;
1298         }
1299         if (profile_level != NULL) {
1300                 int pl = atoi(profile_level);
1301                 struct server_id src;
1302
1303                 DEBUG(1, ("setting profiling level: %s\n",profile_level));
1304                 src.pid = getpid();
1305                 set_profile_level(pl, src);
1306         }
1307 #endif
1308
1309         DEBUG(3,( "loaded services\n"));
1310
1311         if (!is_daemon && !is_a_socket(0)) {
1312                 if (!interactive)
1313                         DEBUG(0,("standard input is not a socket, assuming -D option\n"));
1314
1315                 /*
1316                  * Setting is_daemon here prevents us from eventually calling
1317                  * the open_sockets_inetd()
1318                  */
1319
1320                 is_daemon = True;
1321         }
1322
1323         if (is_daemon && !interactive) {
1324                 DEBUG( 3, ( "Becoming a daemon.\n" ) );
1325                 become_daemon(Fork, no_process_group);
1326         }
1327
1328 #if HAVE_SETPGID
1329         /*
1330          * If we're interactive we want to set our own process group for
1331          * signal management.
1332          */
1333         if (interactive && !no_process_group)
1334                 setpgid( (pid_t)0, (pid_t)0);
1335 #endif
1336
1337         if (!directory_exist(lp_lockdir(), NULL))
1338                 mkdir(lp_lockdir(), 0755);
1339
1340         if (is_daemon)
1341                 pidfile_create("smbd");
1342
1343         if (!reinit_after_fork(smbd_messaging_context(),
1344                                smbd_event_context(), false)) {
1345                 DEBUG(0,("reinit_after_fork() failed\n"));
1346                 exit(1);
1347         }
1348
1349         /* Setup all the TDB's - including CLEAR_IF_FIRST tdb's. */
1350
1351         if (smbd_memcache() == NULL) {
1352                 exit(1);
1353         }
1354
1355         memcache_set_global(smbd_memcache());
1356
1357         /* Initialise the password backed before the global_sam_sid
1358            to ensure that we fetch from ldap before we make a domain sid up */
1359
1360         if(!initialize_password_db(False, smbd_event_context()))
1361                 exit(1);
1362
1363         if (!secrets_init()) {
1364                 DEBUG(0, ("ERROR: smbd can not open secrets.tdb\n"));
1365                 exit(1);
1366         }
1367
1368         if(!get_global_sam_sid()) {
1369                 DEBUG(0,("ERROR: Samba cannot create a SAM SID.\n"));
1370                 exit(1);
1371         }
1372
1373         if (!session_init())
1374                 exit(1);
1375
1376         if (!connections_init(True))
1377                 exit(1);
1378
1379         if (!locking_init())
1380                 exit(1);
1381
1382         namecache_enable();
1383
1384         if (!W_ERROR_IS_OK(registry_init_full()))
1385                 exit(1);
1386
1387 #if 0
1388         if (!init_svcctl_db())
1389                 exit(1);
1390 #endif
1391
1392         if (!print_backend_init(smbd_messaging_context()))
1393                 exit(1);
1394
1395         if (!init_guest_info()) {
1396                 DEBUG(0,("ERROR: failed to setup guest info.\n"));
1397                 return -1;
1398         }
1399
1400         /* only start the background queue daemon if we are
1401            running as a daemon -- bad things will happen if
1402            smbd is launched via inetd and we fork a copy of
1403            ourselves here */
1404
1405         if (is_daemon && !interactive
1406             && lp_parm_bool(-1, "smbd", "backgroundqueue", true)) {
1407                 start_background_queue();
1408         }
1409
1410         if (!open_sockets_smbd(is_daemon, interactive, ports))
1411                 exit(1);
1412
1413         /*
1414          * everything after this point is run after the fork()
1415          */
1416
1417         static_init_rpc;
1418
1419         init_modules();
1420
1421         /* Possibly reload the services file. Only worth doing in
1422          * daemon mode. In inetd mode, we know we only just loaded this.
1423          */
1424         if (is_daemon) {
1425                 reload_services(True);
1426         }
1427
1428         if (!init_account_policy()) {
1429                 DEBUG(0,("Could not open account policy tdb.\n"));
1430                 exit(1);
1431         }
1432
1433         if (*lp_rootdir()) {
1434                 if (sys_chroot(lp_rootdir()) != 0) {
1435                         DEBUG(0,("Failed to change root to %s\n", lp_rootdir()));
1436                         exit(1);
1437                 }
1438                 if (chdir("/") == -1) {
1439                         DEBUG(0,("Failed to chdir to / on chroot to %s\n", lp_rootdir()));
1440                         exit(1);
1441                 }
1442                 DEBUG(0,("Changed root to %s\n", lp_rootdir()));
1443         }
1444
1445         /* Setup oplocks */
1446         if (!init_oplocks(smbd_messaging_context()))
1447                 exit(1);
1448
1449         /* Setup aio signal handler. */
1450         initialize_async_io_handler();
1451
1452         /* register our message handlers */
1453         messaging_register(smbd_messaging_context(), NULL,
1454                            MSG_SMB_FORCE_TDIS, msg_force_tdis);
1455         messaging_register(smbd_messaging_context(), NULL,
1456                            MSG_SMB_RELEASE_IP, msg_release_ip);
1457         messaging_register(smbd_messaging_context(), NULL,
1458                            MSG_SMB_CLOSE_FILE, msg_close_file);
1459
1460         if ((lp_keepalive() != 0)
1461             && !(event_add_idle(smbd_event_context(), NULL,
1462                                 timeval_set(lp_keepalive(), 0),
1463                                 "keepalive", keepalive_fn,
1464                                 NULL))) {
1465                 DEBUG(0, ("Could not add keepalive event\n"));
1466                 exit(1);
1467         }
1468
1469         if (!(event_add_idle(smbd_event_context(), NULL,
1470                              timeval_set(IDLE_CLOSED_TIMEOUT, 0),
1471                              "deadtime", deadtime_fn, NULL))) {
1472                 DEBUG(0, ("Could not add deadtime event\n"));
1473                 exit(1);
1474         }
1475
1476         if (!(event_add_idle(smbd_event_context(), NULL,
1477                              timeval_set(SMBD_SELECT_TIMEOUT, 0),
1478                              "housekeeping", housekeeping_fn, NULL))) {
1479                 DEBUG(0, ("Could not add housekeeping event\n"));
1480                 exit(1);
1481         }
1482
1483 #ifdef CLUSTER_SUPPORT
1484
1485         if (lp_clustering()) {
1486                 /*
1487                  * We need to tell ctdb about our client's TCP
1488                  * connection, so that for failover ctdbd can send
1489                  * tickle acks, triggering a reconnection by the
1490                  * client.
1491                  */
1492
1493                 struct sockaddr_storage srv, clnt;
1494
1495                 if (client_get_tcp_info(&srv, &clnt) == 0) {
1496
1497                         NTSTATUS status;
1498
1499                         status = ctdbd_register_ips(
1500                                 messaging_ctdbd_connection(),
1501                                 &srv, &clnt, release_ip, NULL);
1502
1503                         if (!NT_STATUS_IS_OK(status)) {
1504                                 DEBUG(0, ("ctdbd_register_ips failed: %s\n",
1505                                           nt_errstr(status)));
1506                         }
1507                 } else
1508                 {
1509                         DEBUG(0,("Unable to get tcp info for "
1510                                  "CTDB_CONTROL_TCP_CLIENT: %s\n",
1511                                  strerror(errno)));
1512                 }
1513         }
1514
1515 #endif
1516
1517         TALLOC_FREE(frame);
1518
1519         smbd_process();
1520
1521         namecache_shutdown();
1522
1523         exit_server_cleanly(NULL);
1524         return(0);
1525 }