src/WINNT/afsd/cm_daemon.c

   1 /*
   2  * Copyright 2000, International Business Machines Corporation and others.
   3  * All Rights Reserved.
   4  *
   5  * This software has been released under the terms of the IBM Public
   6  * License.  For details, see the LICENSE file in the top-level source
   7  * directory or online at http://www.openafs.org/dl/license10.html
   8  */
   9
  10 #include <afs/param.h>
  11 #include <afs/stds.h>
  12
  13 #include <windows.h>
  14 #include <winsock2.h>
  15 #include <iphlpapi.h>
  16 #include <stdlib.h>
  17 #include <malloc.h>
  18 #include <string.h>
  19
  20 #include "afsd.h"
  21
  22 #include <rx/rx.h>
  23 #include <rx/rx_prototypes.h>
  24 #include <WINNT/afsreg.h>
  25
  26 #include "afsicf.h"
  27
  28 /* in seconds */
  29 long cm_daemonCheckDownInterval  = 180;
  30 long cm_daemonCheckUpInterval    = 240;
  31 long cm_daemonCheckVolInterval   = 3600;
  32 long cm_daemonCheckCBInterval    = 60;
  33 long cm_daemonCheckVolCBInterval = 0;
  34 long cm_daemonCheckLockInterval  = 60;
  35 long cm_daemonTokenCheckInterval = 180;
  36 long cm_daemonCheckOfflineVolInterval = 600;
  37
  38 osi_rwlock_t cm_daemonLock;
  39
  40 long cm_bkgQueueCount;          /* # of queued requests */
  41
  42 int cm_bkgWaitingForCount;      /* true if someone's waiting for cm_bkgQueueCount to drop */
  43
  44 cm_bkgRequest_t *cm_bkgListp;           /* first elt in the list of requests */
  45 cm_bkgRequest_t *cm_bkgListEndp;        /* last elt in the list of requests */
  46
  47 static int daemon_ShutdownFlag = 0;
  48 static int cm_nDaemons = 0;
  49 static time_t lastIPAddrChange = 0;
  50
  51 static EVENT_HANDLE cm_Daemon_ShutdownEvent = NULL;
  52 static EVENT_HANDLE cm_IPAddrDaemon_ShutdownEvent = NULL;
  53 static EVENT_HANDLE cm_BkgDaemon_ShutdownEvent[CM_MAX_DAEMONS] =
  54        {NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL};
  55
  56 void cm_IpAddrDaemon(long parm)
  57 {
  58     extern void smb_CheckVCs(void);
  59     char * name = "cm_IPAddrDaemon_ShutdownEvent";
  60
  61     cm_IPAddrDaemon_ShutdownEvent = thrd_CreateEvent(NULL, FALSE, FALSE, name);
  62     if ( GetLastError() == ERROR_ALREADY_EXISTS )
  63         afsi_log("Event Object Already Exists: %s", name);
  64
  65     rx_StartClientThread();
  66
  67     while (daemon_ShutdownFlag == 0) {
  68         DWORD Result;
  69
  70         thrd_SetEvent(cm_IPAddrDaemon_ShutdownEvent);
  71         Result = NotifyAddrChange(NULL,NULL);
  72         if (Result == NO_ERROR && daemon_ShutdownFlag == 0) {
  73             lastIPAddrChange = osi_Time();
  74             smb_SetLanAdapterChangeDetected();
  75             thrd_ResetEvent(cm_IPAddrDaemon_ShutdownEvent);
  76         }
  77     }
  78
  79     thrd_SetEvent(cm_IPAddrDaemon_ShutdownEvent);
  80 }
  81
  82 void cm_BkgDaemon(void * parm)
  83 {
  84     cm_bkgRequest_t *rp;
  85     afs_int32 code;
  86     char name[32] = "";
  87     long daemonID = (long)parm;
  88
  89     snprintf(name, sizeof(name), "cm_BkgDaemon_ShutdownEvent%d", daemonID);
  90
  91     cm_BkgDaemon_ShutdownEvent[daemonID] = thrd_CreateEvent(NULL, FALSE, FALSE, name);
  92     if ( GetLastError() == ERROR_ALREADY_EXISTS )
  93         afsi_log("Event Object Already Exists: %s", name);
  94
  95     rx_StartClientThread();
  96
  97     lock_ObtainWrite(&cm_daemonLock);
  98     while (daemon_ShutdownFlag == 0) {
  99         if (!cm_bkgListEndp) {
 100             osi_SleepW((LONG_PTR)&cm_bkgListp, &cm_daemonLock);
 101             lock_ObtainWrite(&cm_daemonLock);
 102             continue;
 103         }
 104
 105         /* we found a request */
 106         for (rp = cm_bkgListEndp; rp; rp = (cm_bkgRequest_t *) osi_QPrev(&rp->q))
 107         {
 108             if (cm_ServerAvailable(&rp->scp->fid, rp->userp))
 109                 break;
 110         }
 111         if (rp == NULL) {
 112             /* we couldn't find a request that we could process at the current time */
 113             lock_ReleaseWrite(&cm_daemonLock);
 114             Sleep(1000);
 115             lock_ObtainWrite(&cm_daemonLock);
 116             continue;
 117         }
 118
 119         osi_QRemoveHT((osi_queue_t **) &cm_bkgListp, (osi_queue_t **) &cm_bkgListEndp, &rp->q);
 120         osi_assertx(cm_bkgQueueCount-- > 0, "cm_bkgQueueCount 0");
 121         lock_ReleaseWrite(&cm_daemonLock);
 122
 123         osi_Log1(afsd_logp,"cm_BkgDaemon processing request 0x%p", rp);
 124
 125 #ifdef DEBUG_REFCOUNT
 126         osi_Log2(afsd_logp,"cm_BkgDaemon (before) scp 0x%x ref %d",rp->scp, rp->scp->refCount);
 127 #endif
 128         code = (*rp->procp)(rp->scp, rp->p1, rp->p2, rp->p3, rp->p4, rp->userp);
 129 #ifdef DEBUG_REFCOUNT
 130         osi_Log2(afsd_logp,"cm_BkgDaemon (after) scp 0x%x ref %d",rp->scp, rp->scp->refCount);
 131 #endif
 132         if (code == 0) {
 133             cm_ReleaseUser(rp->userp);
 134             cm_ReleaseSCache(rp->scp);
 135             free(rp);
 136         }
 137
 138         lock_ObtainWrite(&cm_daemonLock);
 139
 140         switch ( code ) {
 141         case 0: /* success */
 142             osi_Log1(afsd_logp,"cm_BkgDaemon SUCCESS: request 0x%p", rp);
 143             break;
 144         case CM_ERROR_TIMEDOUT: /* or server restarting */
 145         case CM_ERROR_RETRY:
 146         case CM_ERROR_WOULDBLOCK:
 147         case CM_ERROR_ALLBUSY:
 148         case CM_ERROR_ALLDOWN:
 149         case CM_ERROR_ALLOFFLINE:
 150         case CM_ERROR_PARTIALWRITE:
 151             osi_Log2(afsd_logp,"cm_BkgDaemon re-queueing failed request 0x%p code 0x%x",
 152                      rp, code);
 153             cm_bkgQueueCount++;
 154             osi_QAddT((osi_queue_t **) &cm_bkgListp, (osi_queue_t **)&cm_bkgListEndp, &rp->q);
 155             break;
 156         default:
 157             osi_Log2(afsd_logp,"cm_BkgDaemon FAILED: request dropped 0x%p code 0x%x",
 158                      rp, code);
 159         }
 160     }
 161     lock_ReleaseWrite(&cm_daemonLock);
 162
 163     thrd_SetEvent(cm_BkgDaemon_ShutdownEvent[daemonID]);
 164
 165 }
 166
 167 void cm_QueueBKGRequest(cm_scache_t *scp, cm_bkgProc_t *procp, afs_uint32 p1, afs_uint32 p2, afs_uint32 p3, afs_uint32 p4,
 168         cm_user_t *userp)
 169 {
 170     cm_bkgRequest_t *rp;
 171
 172     rp = malloc(sizeof(*rp));
 173     memset(rp, 0, sizeof(*rp));
 174
 175     cm_HoldSCache(scp);
 176     rp->scp = scp;
 177     cm_HoldUser(userp);
 178     rp->userp = userp;
 179     rp->procp = procp;
 180     rp->p1 = p1;
 181     rp->p2 = p2;
 182     rp->p3 = p3;
 183     rp->p4 = p4;
 184
 185     lock_ObtainWrite(&cm_daemonLock);
 186     cm_bkgQueueCount++;
 187     osi_QAdd((osi_queue_t **) &cm_bkgListp, &rp->q);
 188     if (!cm_bkgListEndp)
 189         cm_bkgListEndp = rp;
 190     lock_ReleaseWrite(&cm_daemonLock);
 191
 192     osi_Wakeup((LONG_PTR) &cm_bkgListp);
 193 }
 194
 195 static int
 196 IsWindowsFirewallPresent(void)
 197 {
 198     SC_HANDLE scm;
 199     SC_HANDLE svc;
 200     BOOLEAN flag;
 201     BOOLEAN result = FALSE;
 202     LPQUERY_SERVICE_CONFIG pConfig = NULL;
 203     DWORD BufSize;
 204     LONG status;
 205
 206     /* Open services manager */
 207     scm = OpenSCManager(NULL, NULL, GENERIC_READ);
 208     if (!scm) return FALSE;
 209
 210     /* Open Windows Firewall service */
 211     svc = OpenService(scm, "MpsSvc", SERVICE_QUERY_CONFIG);
 212     if (!svc) {
 213         afsi_log("MpsSvc Service could not be opened for query: 0x%x", GetLastError());
 214         svc = OpenService(scm, "SharedAccess", SERVICE_QUERY_CONFIG);
 215         if (!svc)
 216             afsi_log("SharedAccess Service could not be opened for query: 0x%x", GetLastError());
 217     }
 218     if (!svc)
 219         goto close_scm;
 220
 221     /* Query Windows Firewall service config, first just to get buffer size */
 222     /* Expected to fail, so don't test return value */
 223     (void) QueryServiceConfig(svc, NULL, 0, &BufSize);
 224     status = GetLastError();
 225     if (status != ERROR_INSUFFICIENT_BUFFER)
 226         goto close_svc;
 227
 228     /* Allocate buffer */
 229     pConfig = (LPQUERY_SERVICE_CONFIG)GlobalAlloc(GMEM_FIXED,BufSize);
 230     if (!pConfig)
 231         goto close_svc;
 232
 233     /* Query Windows Firewall service config, this time for real */
 234     flag = QueryServiceConfig(svc, pConfig, BufSize, &BufSize);
 235     if (!flag) {
 236         afsi_log("QueryServiceConfig failed: 0x%x", GetLastError());
 237         goto free_pConfig;
 238     }
 239
 240     /* Is it autostart? */
 241     afsi_log("AutoStart 0x%x", pConfig->dwStartType);
 242     if (pConfig->dwStartType < SERVICE_DEMAND_START)
 243         result = TRUE;
 244
 245   free_pConfig:
 246     GlobalFree(pConfig);
 247   close_svc:
 248     CloseServiceHandle(svc);
 249   close_scm:
 250     CloseServiceHandle(scm);
 251
 252     return result;
 253 }
 254
 255 void
 256 cm_DaemonCheckInit(void)
 257 {
 258     HKEY parmKey;
 259     DWORD dummyLen;
 260     DWORD dummy;
 261     DWORD code;
 262
 263     code = RegOpenKeyEx(HKEY_LOCAL_MACHINE, AFSREG_CLT_SVC_PARAM_SUBKEY,
 264                          0, KEY_QUERY_VALUE, &parmKey);
 265     if (code)
 266         return;
 267
 268     dummyLen = sizeof(DWORD);
 269     code = RegQueryValueEx(parmKey, "daemonCheckDownInterval", NULL, NULL,
 270                             (BYTE *) &dummy, &dummyLen);
 271     if (code == ERROR_SUCCESS)
 272         cm_daemonCheckDownInterval = dummy;
 273     afsi_log("daemonCheckDownInterval is %d", cm_daemonCheckDownInterval);
 274
 275     dummyLen = sizeof(DWORD);
 276     code = RegQueryValueEx(parmKey, "daemonCheckUpInterval", NULL, NULL,
 277                             (BYTE *) &dummy, &dummyLen);
 278     if (code == ERROR_SUCCESS)
 279         cm_daemonCheckUpInterval = dummy;
 280     afsi_log("daemonCheckUpInterval is %d", cm_daemonCheckUpInterval);
 281
 282     dummyLen = sizeof(DWORD);
 283     code = RegQueryValueEx(parmKey, "daemonCheckVolInterval", NULL, NULL,
 284                             (BYTE *) &dummy, &dummyLen);
 285     if (code == ERROR_SUCCESS)
 286         cm_daemonCheckVolInterval = dummy;
 287     afsi_log("daemonCheckVolInterval is %d", cm_daemonCheckVolInterval);
 288
 289     dummyLen = sizeof(DWORD);
 290     code = RegQueryValueEx(parmKey, "daemonCheckCBInterval", NULL, NULL,
 291                             (BYTE *) &dummy, &dummyLen);
 292     if (code == ERROR_SUCCESS)
 293         cm_daemonCheckCBInterval = dummy;
 294     afsi_log("daemonCheckCBInterval is %d", cm_daemonCheckCBInterval);
 295
 296     dummyLen = sizeof(DWORD);
 297     code = RegQueryValueEx(parmKey, "daemonCheckVolCBInterval", NULL, NULL,
 298                             (BYTE *) &dummy, &dummyLen);
 299     if (code == ERROR_SUCCESS)
 300         cm_daemonCheckVolCBInterval = dummy;
 301     afsi_log("daemonCheckVolCBInterval is %d", cm_daemonCheckVolCBInterval);
 302
 303     dummyLen = sizeof(DWORD);
 304     code = RegQueryValueEx(parmKey, "daemonCheckLockInterval", NULL, NULL,
 305                             (BYTE *) &dummy, &dummyLen);
 306     if (code == ERROR_SUCCESS)
 307         cm_daemonCheckLockInterval = dummy;
 308     afsi_log("daemonCheckLockInterval is %d", cm_daemonCheckLockInterval);
 309
 310     dummyLen = sizeof(DWORD);
 311     code = RegQueryValueEx(parmKey, "daemonCheckTokenInterval", NULL, NULL,
 312                             (BYTE *) &dummy, &dummyLen);
 313     if (code == ERROR_SUCCESS)
 314         cm_daemonTokenCheckInterval = dummy;
 315     afsi_log("daemonCheckTokenInterval is %d", cm_daemonTokenCheckInterval);
 316
 317     dummyLen = sizeof(DWORD);
 318     code = RegQueryValueEx(parmKey, "daemonCheckOfflineVolInterval", NULL, NULL,
 319                             (BYTE *) &dummy, &dummyLen);
 320     if (code == ERROR_SUCCESS)
 321         cm_daemonCheckOfflineVolInterval = dummy;
 322     afsi_log("daemonCheckOfflineVolInterval is %d", cm_daemonCheckOfflineVolInterval);
 323
 324     RegCloseKey(parmKey);
 325 }
 326
 327 /* periodic check daemon */
 328 void cm_Daemon(long parm)
 329 {
 330     time_t now;
 331     time_t lastLockCheck;
 332     time_t lastVolCheck;
 333     time_t lastCBExpirationCheck;
 334     time_t lastVolCBRenewalCheck;
 335     time_t lastDownServerCheck;
 336     time_t lastUpServerCheck;
 337     time_t lastTokenCacheCheck;
 338     time_t lastBusyVolCheck;
 339     char thostName[200];
 340     unsigned long code;
 341     struct hostent *thp;
 342     HMODULE hHookDll;
 343     char * name = "cm_Daemon_ShutdownEvent";
 344     int configureFirewall = IsWindowsFirewallPresent();
 345     int bAddrChangeCheck = 0;
 346
 347     cm_Daemon_ShutdownEvent = thrd_CreateEvent(NULL, FALSE, FALSE, name);
 348     if ( GetLastError() == ERROR_ALREADY_EXISTS )
 349         afsi_log("Event Object Already Exists: %s", name);
 350
 351     if (!configureFirewall) {
 352         afsi_log("No Windows Firewall detected");
 353     }
 354
 355     /* ping all file servers, up or down, with unauthenticated connection,
 356      * to find out whether we have all our callbacks from the server still.
 357      * Also, ping down VLDBs.
 358      */
 359     /*
 360      * Seed the random number generator with our own address, so that
 361      * clients starting at the same time don't all do vol checks at the
 362      * same time.
 363      */
 364     gethostname(thostName, sizeof(thostName));
 365     thp = gethostbyname(thostName);
 366     if (thp == NULL)    /* In djgpp, gethostname returns the netbios
 367                            name of the machine.  gethostbyname will fail
 368                            looking this up if it differs from DNS name. */
 369         code = 0;
 370     else
 371         memcpy(&code, thp->h_addr_list[0], 4);
 372
 373     srand(ntohl(code));
 374
 375     cm_DaemonCheckInit();
 376
 377     now = osi_Time();
 378     lastVolCheck = now - cm_daemonCheckVolInterval/2 + (rand() % cm_daemonCheckVolInterval);
 379     lastCBExpirationCheck = now - cm_daemonCheckCBInterval/2 + (rand() % cm_daemonCheckCBInterval);
 380     if (cm_daemonCheckVolCBInterval)
 381         lastVolCBRenewalCheck = now - cm_daemonCheckVolCBInterval/2 + (rand() % cm_daemonCheckVolCBInterval);
 382     lastLockCheck = now - cm_daemonCheckLockInterval/2 + (rand() % cm_daemonCheckLockInterval);
 383     lastDownServerCheck = now - cm_daemonCheckDownInterval/2 + (rand() % cm_daemonCheckDownInterval);
 384     lastUpServerCheck = now - cm_daemonCheckUpInterval/2 + (rand() % cm_daemonCheckUpInterval);
 385     lastTokenCacheCheck = now - cm_daemonTokenCheckInterval/2 + (rand() % cm_daemonTokenCheckInterval);
 386     lastBusyVolCheck = now - cm_daemonCheckOfflineVolInterval/2 * (rand() % cm_daemonCheckOfflineVolInterval);
 387
 388     while (daemon_ShutdownFlag == 0) {
 389         /* check to see if the listener threads halted due to network
 390          * disconnect or other issues.  If so, attempt to restart them.
 391          */
 392         smb_RestartListeners(0);
 393
 394         if (daemon_ShutdownFlag == 1)
 395             break;
 396
 397         if (configureFirewall) {
 398             /* Open Microsoft Firewall to allow in port 7001 */
 399             switch (icf_CheckAndAddAFSPorts(AFS_PORTSET_CLIENT)) {
 400             case 0:
 401                 afsi_log("Windows Firewall Configuration succeeded");
 402                 configureFirewall = 0;
 403                 break;
 404             case 1:
 405                 afsi_log("Invalid Windows Firewall Port Set");
 406                 break;
 407             case 2:
 408                 afsi_log("Unable to open Windows Firewall Profile");
 409                 break;
 410             case 3:
 411                 afsi_log("Unable to create/modify Windows Firewall Port entries");
 412                 break;
 413             default:
 414                 afsi_log("Unknown Windows Firewall Configuration error");
 415             }
 416         }
 417
 418         /* find out what time it is */
 419         now = osi_Time();
 420
 421         /* Determine whether an address change took place that we need to respond to */
 422         if (bAddrChangeCheck)
 423             bAddrChangeCheck = 0;
 424
 425         if (lastIPAddrChange != 0 && lastIPAddrChange + 2500 < now) {
 426             bAddrChangeCheck = 1;
 427             lastIPAddrChange = 0;
 428         }
 429
 430         /* check down servers */
 431         if ((bAddrChangeCheck || now > lastDownServerCheck + cm_daemonCheckDownInterval) &&
 432             daemon_ShutdownFlag == 0) {
 433             lastDownServerCheck = now;
 434             osi_Log0(afsd_logp, "cm_Daemon CheckDownServers");
 435             cm_CheckServers(CM_FLAG_CHECKDOWNSERVERS, NULL);
 436             if (daemon_ShutdownFlag == 1)
 437                 break;
 438             now = osi_Time();
 439         }
 440
 441         if (bAddrChangeCheck)
 442             cm_ForceNewConnectionsAllServers();
 443
 444         /* check up servers */
 445         if ((bAddrChangeCheck || now > lastUpServerCheck + cm_daemonCheckUpInterval) &&
 446             daemon_ShutdownFlag == 0) {
 447             lastUpServerCheck = now;
 448             osi_Log0(afsd_logp, "cm_Daemon CheckUpServers");
 449             cm_CheckServers(CM_FLAG_CHECKUPSERVERS, NULL);
 450             if (daemon_ShutdownFlag == 1)
 451                 break;
 452             now = osi_Time();
 453         }
 454
 455         if (bAddrChangeCheck) {
 456             smb_CheckVCs();
 457             cm_VolStatus_Network_Addr_Change();
 458         }
 459
 460         if (now > lastVolCheck + cm_daemonCheckVolInterval &&
 461             daemon_ShutdownFlag == 0) {
 462             lastVolCheck = now;
 463             cm_RefreshVolumes();
 464             if (daemon_ShutdownFlag == 1)
 465                 break;
 466             now = osi_Time();
 467         }
 468
 469         if (cm_daemonCheckVolCBInterval &&
 470             now > lastVolCBRenewalCheck + cm_daemonCheckVolCBInterval &&
 471             daemon_ShutdownFlag == 0) {
 472             lastVolCBRenewalCheck = now;
 473             cm_VolumeRenewROCallbacks();
 474             if (daemon_ShutdownFlag == 1)
 475                 break;
 476             now = osi_Time();
 477         }
 478
 479         if ((bAddrChangeCheck || now > lastBusyVolCheck + cm_daemonCheckOfflineVolInterval) &&
 480             daemon_ShutdownFlag == 0) {
 481             lastVolCheck = now;
 482             cm_CheckOfflineVolumes();
 483             if (daemon_ShutdownFlag == 1)
 484                 break;
 485             now = osi_Time();
 486         }
 487
 488         if (now > lastCBExpirationCheck + cm_daemonCheckCBInterval &&
 489             daemon_ShutdownFlag == 0) {
 490             lastCBExpirationCheck = now;
 491             cm_CheckCBExpiration();
 492             if (daemon_ShutdownFlag == 1)
 493                 break;
 494             now = osi_Time();
 495         }
 496
 497         if (now > lastLockCheck + cm_daemonCheckLockInterval &&
 498             daemon_ShutdownFlag == 0) {
 499             lastLockCheck = now;
 500             cm_CheckLocks();
 501             if (daemon_ShutdownFlag == 1)
 502                 break;
 503             now = osi_Time();
 504         }
 505
 506         if (now > lastTokenCacheCheck + cm_daemonTokenCheckInterval &&
 507             daemon_ShutdownFlag == 0) {
 508             lastTokenCacheCheck = now;
 509             cm_CheckTokenCache(now);
 510             if (daemon_ShutdownFlag == 1)
 511                 break;
 512             now = osi_Time();
 513         }
 514
 515         /* allow an exit to be called prior to stopping the service */
 516         hHookDll = LoadLibrary(AFSD_HOOK_DLL);
 517         if (hHookDll)
 518         {
 519             BOOL hookRc = TRUE;
 520             AfsdDaemonHook daemonHook = ( AfsdDaemonHook ) GetProcAddress(hHookDll, AFSD_DAEMON_HOOK);
 521             if (daemonHook)
 522             {
 523                 hookRc = daemonHook();
 524             }
 525             FreeLibrary(hHookDll);
 526             hHookDll = NULL;
 527
 528             if (hookRc == FALSE)
 529             {
 530                 SetEvent(WaitToTerminate);
 531             }
 532         }
 533
 534         if (daemon_ShutdownFlag == 1) {
 535             break;
 536         }
 537         thrd_Sleep(10000);              /* sleep 10 seconds */
 538     }
 539     thrd_SetEvent(cm_Daemon_ShutdownEvent);
 540 }
 541
 542 void cm_DaemonShutdown(void)
 543 {
 544     int i;
 545     DWORD code;
 546
 547     daemon_ShutdownFlag = 1;
 548     osi_Wakeup((LONG_PTR) &cm_bkgListp);
 549
 550     /* wait for shutdown */
 551     if (cm_Daemon_ShutdownEvent)
 552         code = thrd_WaitForSingleObject_Event(cm_Daemon_ShutdownEvent, INFINITE);
 553
 554     for ( i=0; i<cm_nDaemons; i++) {
 555         if (cm_BkgDaemon_ShutdownEvent[i])
 556             code = thrd_WaitForSingleObject_Event(cm_BkgDaemon_ShutdownEvent[i], INFINITE);
 557     }
 558
 559     if (cm_IPAddrDaemon_ShutdownEvent)
 560         code = thrd_WaitForSingleObject_Event(cm_IPAddrDaemon_ShutdownEvent, INFINITE);
 561 }
 562
 563 void cm_InitDaemon(int nDaemons)
 564 {
 565     static osi_once_t once;
 566     long pid;
 567     thread_t phandle;
 568     int i;
 569
 570     cm_nDaemons = (nDaemons > CM_MAX_DAEMONS) ? CM_MAX_DAEMONS : nDaemons;
 571
 572     if (osi_Once(&once)) {
 573         lock_InitializeRWLock(&cm_daemonLock, "cm_daemonLock");
 574         osi_EndOnce(&once);
 575
 576         /* creating IP Address Change monitor daemon */
 577         phandle = thrd_Create((SecurityAttrib) 0, 0,
 578                                (ThreadFunc) cm_IpAddrDaemon, 0, 0, &pid, "cm_IpAddrDaemon");
 579         osi_assertx(phandle != NULL, "cm_IpAddrDaemon thread creation failure");
 580         thrd_CloseHandle(phandle);
 581
 582         /* creating pinging daemon */
 583         phandle = thrd_Create((SecurityAttrib) 0, 0,
 584                                (ThreadFunc) cm_Daemon, 0, 0, &pid, "cm_Daemon");
 585         osi_assertx(phandle != NULL, "cm_Daemon thread creation failure");
 586         thrd_CloseHandle(phandle);
 587
 588         for(i=0; i < cm_nDaemons; i++) {
 589             phandle = thrd_Create((SecurityAttrib) 0, 0,
 590                                    (ThreadFunc) cm_BkgDaemon, (LPVOID)i, 0, &pid,
 591                                    "cm_BkgDaemon");
 592             osi_assertx(phandle != NULL, "cm_BkgDaemon thread creation failure");
 593             thrd_CloseHandle(phandle);
 594         }
 595     }
 596 }