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 long cm_daemonPerformanceTuningInterval = 0;
  38
  39 osi_rwlock_t cm_daemonLock;
  40
  41 long cm_bkgQueueCount;          /* # of queued requests */
  42
  43 int cm_bkgWaitingForCount;      /* true if someone's waiting for cm_bkgQueueCount to drop */
  44
  45 cm_bkgRequest_t *cm_bkgListp;           /* first elt in the list of requests */
  46 cm_bkgRequest_t *cm_bkgListEndp;        /* last elt in the list of requests */
  47
  48 static int daemon_ShutdownFlag = 0;
  49 static int cm_nDaemons = 0;
  50 static time_t lastIPAddrChange = 0;
  51
  52 static EVENT_HANDLE cm_Daemon_ShutdownEvent = NULL;
  53 static EVENT_HANDLE cm_IPAddrDaemon_ShutdownEvent = NULL;
  54 static EVENT_HANDLE cm_BkgDaemon_ShutdownEvent[CM_MAX_DAEMONS] =
  55        {NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL};
  56
  57 void cm_IpAddrDaemon(long parm)
  58 {
  59     extern void smb_CheckVCs(void);
  60     char * name = "cm_IPAddrDaemon_ShutdownEvent";
  61
  62     cm_IPAddrDaemon_ShutdownEvent = thrd_CreateEvent(NULL, FALSE, FALSE, name);
  63     if ( GetLastError() == ERROR_ALREADY_EXISTS )
  64         afsi_log("Event Object Already Exists: %s", name);
  65
  66     rx_StartClientThread();
  67
  68     while (daemon_ShutdownFlag == 0) {
  69         DWORD Result;
  70
  71         thrd_SetEvent(cm_IPAddrDaemon_ShutdownEvent);
  72         Result = NotifyAddrChange(NULL,NULL);
  73         if (Result == NO_ERROR && daemon_ShutdownFlag == 0) {
  74             lastIPAddrChange = osi_Time();
  75             smb_SetLanAdapterChangeDetected();
  76             cm_SetLanAdapterChangeDetected();
  77             thrd_ResetEvent(cm_IPAddrDaemon_ShutdownEvent);
  78         }
  79     }
  80
  81     thrd_SetEvent(cm_IPAddrDaemon_ShutdownEvent);
  82 }
  83
  84 void cm_BkgDaemon(void * parm)
  85 {
  86     cm_bkgRequest_t *rp;
  87     afs_int32 code;
  88     char name[32] = "";
  89     long daemonID = (long)parm;
  90
  91     snprintf(name, sizeof(name), "cm_BkgDaemon_ShutdownEvent%d", daemonID);
  92
  93     cm_BkgDaemon_ShutdownEvent[daemonID] = thrd_CreateEvent(NULL, FALSE, FALSE, name);
  94     if ( GetLastError() == ERROR_ALREADY_EXISTS )
  95         afsi_log("Event Object Already Exists: %s", name);
  96
  97     rx_StartClientThread();
  98
  99     lock_ObtainWrite(&cm_daemonLock);
 100     while (daemon_ShutdownFlag == 0) {
 101         if (!cm_bkgListEndp) {
 102             osi_SleepW((LONG_PTR)&cm_bkgListp, &cm_daemonLock);
 103             lock_ObtainWrite(&cm_daemonLock);
 104             continue;
 105         }
 106
 107         /* we found a request */
 108         for (rp = cm_bkgListEndp; rp; rp = (cm_bkgRequest_t *) osi_QPrev(&rp->q))
 109         {
 110             if (cm_ServerAvailable(&rp->scp->fid, rp->userp) &&
 111                 !(rp->scp->flags & CM_SCACHEFLAG_DATASTORING))
 112                 break;
 113         }
 114         if (rp == NULL) {
 115             /* we couldn't find a request that we could process at the current time */
 116             lock_ReleaseWrite(&cm_daemonLock);
 117             Sleep(1000);
 118             lock_ObtainWrite(&cm_daemonLock);
 119             continue;
 120         }
 121
 122         osi_QRemoveHT((osi_queue_t **) &cm_bkgListp, (osi_queue_t **) &cm_bkgListEndp, &rp->q);
 123         osi_assertx(cm_bkgQueueCount-- > 0, "cm_bkgQueueCount 0");
 124         lock_ReleaseWrite(&cm_daemonLock);
 125
 126         osi_Log1(afsd_logp,"cm_BkgDaemon processing request 0x%p", rp);
 127
 128 #ifdef DEBUG_REFCOUNT
 129         osi_Log2(afsd_logp,"cm_BkgDaemon (before) scp 0x%x ref %d",rp->scp, rp->scp->refCount);
 130 #endif
 131         code = (*rp->procp)(rp->scp, rp->p1, rp->p2, rp->p3, rp->p4, rp->userp);
 132 #ifdef DEBUG_REFCOUNT
 133         osi_Log2(afsd_logp,"cm_BkgDaemon (after) scp 0x%x ref %d",rp->scp, rp->scp->refCount);
 134 #endif
 135
 136         /*
 137          * Keep the following list synchronized with the
 138          * error code list in cm_BkgStore.
 139          * cm_SyncOpDone(CM_SCACHESYNC_ASYNCSTORE) will be called there unless
 140          * one of these errors has occurred.
 141          */
 142         switch ( code ) {
 143         case CM_ERROR_TIMEDOUT: /* or server restarting */
 144         case CM_ERROR_RETRY:
 145         case CM_ERROR_WOULDBLOCK:
 146         case CM_ERROR_ALLBUSY:
 147         case CM_ERROR_ALLDOWN:
 148         case CM_ERROR_ALLOFFLINE:
 149         case CM_ERROR_PARTIALWRITE:
 150             osi_Log2(afsd_logp,"cm_BkgDaemon re-queueing failed request 0x%p code 0x%x",
 151                      rp, code);
 152             lock_ObtainWrite(&cm_daemonLock);
 153             cm_bkgQueueCount++;
 154             osi_QAddT((osi_queue_t **) &cm_bkgListp, (osi_queue_t **)&cm_bkgListEndp, &rp->q);
 155             break;
 156         case 0:  /* success */
 157         default: /* other error */
 158             if (code == 0)
 159                 osi_Log1(afsd_logp,"cm_BkgDaemon SUCCESS: request 0x%p", rp);
 160             else
 161                 osi_Log2(afsd_logp,"cm_BkgDaemon FAILED: request dropped 0x%p code 0x%x",
 162                      rp, code);
 163             cm_ReleaseUser(rp->userp);
 164             cm_ReleaseSCache(rp->scp);
 165             free(rp);
 166             lock_ObtainWrite(&cm_daemonLock);
 167         }
 168     }
 169     lock_ReleaseWrite(&cm_daemonLock);
 170
 171     thrd_SetEvent(cm_BkgDaemon_ShutdownEvent[daemonID]);
 172 }
 173
 174 void cm_QueueBKGRequest(cm_scache_t *scp, cm_bkgProc_t *procp, afs_uint32 p1, afs_uint32 p2, afs_uint32 p3, afs_uint32 p4,
 175         cm_user_t *userp)
 176 {
 177     cm_bkgRequest_t *rp;
 178
 179     rp = malloc(sizeof(*rp));
 180     memset(rp, 0, sizeof(*rp));
 181
 182     cm_HoldSCache(scp);
 183     rp->scp = scp;
 184     cm_HoldUser(userp);
 185     rp->userp = userp;
 186     rp->procp = procp;
 187     rp->p1 = p1;
 188     rp->p2 = p2;
 189     rp->p3 = p3;
 190     rp->p4 = p4;
 191
 192     lock_ObtainWrite(&cm_daemonLock);
 193     cm_bkgQueueCount++;
 194     osi_QAdd((osi_queue_t **) &cm_bkgListp, &rp->q);
 195     if (!cm_bkgListEndp)
 196         cm_bkgListEndp = rp;
 197     lock_ReleaseWrite(&cm_daemonLock);
 198
 199     osi_Wakeup((LONG_PTR) &cm_bkgListp);
 200 }
 201
 202 static int
 203 IsWindowsFirewallPresent(void)
 204 {
 205     SC_HANDLE scm;
 206     SC_HANDLE svc;
 207     BOOLEAN flag;
 208     BOOLEAN result = FALSE;
 209     LPQUERY_SERVICE_CONFIG pConfig = NULL;
 210     DWORD BufSize;
 211     LONG status;
 212
 213     /* Open services manager */
 214     scm = OpenSCManager(NULL, NULL, GENERIC_READ);
 215     if (!scm) return FALSE;
 216
 217     /* Open Windows Firewall service */
 218     svc = OpenService(scm, "MpsSvc", SERVICE_QUERY_CONFIG);
 219     if (!svc) {
 220         afsi_log("MpsSvc Service could not be opened for query: 0x%x", GetLastError());
 221         svc = OpenService(scm, "SharedAccess", SERVICE_QUERY_CONFIG);
 222         if (!svc)
 223             afsi_log("SharedAccess Service could not be opened for query: 0x%x", GetLastError());
 224     }
 225     if (!svc)
 226         goto close_scm;
 227
 228     /* Query Windows Firewall service config, first just to get buffer size */
 229     /* Expected to fail, so don't test return value */
 230     (void) QueryServiceConfig(svc, NULL, 0, &BufSize);
 231     status = GetLastError();
 232     if (status != ERROR_INSUFFICIENT_BUFFER)
 233         goto close_svc;
 234
 235     /* Allocate buffer */
 236     pConfig = (LPQUERY_SERVICE_CONFIG)GlobalAlloc(GMEM_FIXED,BufSize);
 237     if (!pConfig)
 238         goto close_svc;
 239
 240     /* Query Windows Firewall service config, this time for real */
 241     flag = QueryServiceConfig(svc, pConfig, BufSize, &BufSize);
 242     if (!flag) {
 243         afsi_log("QueryServiceConfig failed: 0x%x", GetLastError());
 244         goto free_pConfig;
 245     }
 246
 247     /* Is it autostart? */
 248     afsi_log("AutoStart 0x%x", pConfig->dwStartType);
 249     if (pConfig->dwStartType < SERVICE_DEMAND_START)
 250         result = TRUE;
 251
 252   free_pConfig:
 253     GlobalFree(pConfig);
 254   close_svc:
 255     CloseServiceHandle(svc);
 256   close_scm:
 257     CloseServiceHandle(scm);
 258
 259     return result;
 260 }
 261
 262 void
 263 cm_DaemonCheckInit(void)
 264 {
 265     HKEY parmKey;
 266     DWORD dummyLen;
 267     DWORD dummy;
 268     DWORD code;
 269
 270     code = RegOpenKeyEx(HKEY_LOCAL_MACHINE, AFSREG_CLT_SVC_PARAM_SUBKEY,
 271                          0, KEY_QUERY_VALUE, &parmKey);
 272     if (code)
 273         return;
 274
 275     dummyLen = sizeof(DWORD);
 276     code = RegQueryValueEx(parmKey, "daemonCheckDownInterval", NULL, NULL,
 277                             (BYTE *) &dummy, &dummyLen);
 278     if (code == ERROR_SUCCESS && dummy)
 279         cm_daemonCheckDownInterval = dummy;
 280     afsi_log("daemonCheckDownInterval is %d", cm_daemonCheckDownInterval);
 281
 282     dummyLen = sizeof(DWORD);
 283     code = RegQueryValueEx(parmKey, "daemonCheckUpInterval", NULL, NULL,
 284                             (BYTE *) &dummy, &dummyLen);
 285     if (code == ERROR_SUCCESS && dummy)
 286         cm_daemonCheckUpInterval = dummy;
 287     afsi_log("daemonCheckUpInterval is %d", cm_daemonCheckUpInterval);
 288
 289     dummyLen = sizeof(DWORD);
 290     code = RegQueryValueEx(parmKey, "daemonCheckVolInterval", NULL, NULL,
 291                             (BYTE *) &dummy, &dummyLen);
 292     if (code == ERROR_SUCCESS && dummy)
 293         cm_daemonCheckVolInterval = dummy;
 294     afsi_log("daemonCheckVolInterval is %d", cm_daemonCheckVolInterval);
 295
 296     dummyLen = sizeof(DWORD);
 297     code = RegQueryValueEx(parmKey, "daemonCheckCBInterval", NULL, NULL,
 298                             (BYTE *) &dummy, &dummyLen);
 299     if (code == ERROR_SUCCESS && dummy)
 300         cm_daemonCheckCBInterval = dummy;
 301     afsi_log("daemonCheckCBInterval is %d", cm_daemonCheckCBInterval);
 302
 303     dummyLen = sizeof(DWORD);
 304     code = RegQueryValueEx(parmKey, "daemonCheckVolCBInterval", NULL, NULL,
 305                             (BYTE *) &dummy, &dummyLen);
 306     if (code == ERROR_SUCCESS && dummy)
 307         cm_daemonCheckVolCBInterval = dummy;
 308     afsi_log("daemonCheckVolCBInterval is %d", cm_daemonCheckVolCBInterval);
 309
 310     dummyLen = sizeof(DWORD);
 311     code = RegQueryValueEx(parmKey, "daemonCheckLockInterval", NULL, NULL,
 312                             (BYTE *) &dummy, &dummyLen);
 313     if (code == ERROR_SUCCESS && dummy)
 314         cm_daemonCheckLockInterval = dummy;
 315     afsi_log("daemonCheckLockInterval is %d", cm_daemonCheckLockInterval);
 316
 317     dummyLen = sizeof(DWORD);
 318     code = RegQueryValueEx(parmKey, "daemonCheckTokenInterval", NULL, NULL,
 319                             (BYTE *) &dummy, &dummyLen);
 320     if (code == ERROR_SUCCESS && dummy)
 321         cm_daemonTokenCheckInterval = dummy;
 322     afsi_log("daemonCheckTokenInterval is %d", cm_daemonTokenCheckInterval);
 323
 324     dummyLen = sizeof(DWORD);
 325     code = RegQueryValueEx(parmKey, "daemonCheckOfflineVolInterval", NULL, NULL,
 326                             (BYTE *) &dummy, &dummyLen);
 327     if (code == ERROR_SUCCESS && dummy)
 328         cm_daemonCheckOfflineVolInterval = dummy;
 329     afsi_log("daemonCheckOfflineVolInterval is %d", cm_daemonCheckOfflineVolInterval);
 330
 331     dummyLen = sizeof(DWORD);
 332     code = RegQueryValueEx(parmKey, "daemonPerformanceTuningInterval", NULL, NULL,
 333                             (BYTE *) &dummy, &dummyLen);
 334     if (code == ERROR_SUCCESS)
 335         cm_daemonPerformanceTuningInterval = dummy;
 336     afsi_log("daemonPerformanceTuningInterval is %d", cm_daemonPerformanceTuningInterval);
 337
 338     RegCloseKey(parmKey);
 339
 340     if (cm_daemonPerformanceTuningInterval)
 341         cm_PerformanceTuningInit();
 342 }
 343
 344 /* periodic check daemon */
 345 void cm_Daemon(long parm)
 346 {
 347     time_t now;
 348     time_t lastLockCheck;
 349     time_t lastVolCheck;
 350     time_t lastCBExpirationCheck;
 351     time_t lastVolCBRenewalCheck;
 352     time_t lastDownServerCheck;
 353     time_t lastUpServerCheck;
 354     time_t lastTokenCacheCheck;
 355     time_t lastBusyVolCheck;
 356     time_t lastPerformanceCheck;
 357     char thostName[200];
 358     unsigned long code;
 359     struct hostent *thp;
 360     HMODULE hHookDll;
 361     char * name = "cm_Daemon_ShutdownEvent";
 362     int configureFirewall = IsWindowsFirewallPresent();
 363     int bAddrChangeCheck = 0;
 364
 365     cm_Daemon_ShutdownEvent = thrd_CreateEvent(NULL, FALSE, FALSE, name);
 366     if ( GetLastError() == ERROR_ALREADY_EXISTS )
 367         afsi_log("Event Object Already Exists: %s", name);
 368
 369     if (!configureFirewall) {
 370         afsi_log("No Windows Firewall detected");
 371     }
 372
 373     /* ping all file servers, up or down, with unauthenticated connection,
 374      * to find out whether we have all our callbacks from the server still.
 375      * Also, ping down VLDBs.
 376      */
 377     /*
 378      * Seed the random number generator with our own address, so that
 379      * clients starting at the same time don't all do vol checks at the
 380      * same time.
 381      */
 382     gethostname(thostName, sizeof(thostName));
 383     thp = gethostbyname(thostName);
 384     if (thp == NULL)    /* In djgpp, gethostname returns the netbios
 385                            name of the machine.  gethostbyname will fail
 386                            looking this up if it differs from DNS name. */
 387         code = 0;
 388     else
 389         memcpy(&code, thp->h_addr_list[0], 4);
 390
 391     srand(ntohl(code));
 392
 393     cm_DaemonCheckInit();
 394
 395     now = osi_Time();
 396     lastVolCheck = now - cm_daemonCheckVolInterval/2 + (rand() % cm_daemonCheckVolInterval);
 397     lastCBExpirationCheck = now - cm_daemonCheckCBInterval/2 + (rand() % cm_daemonCheckCBInterval);
 398     if (cm_daemonCheckVolCBInterval)
 399         lastVolCBRenewalCheck = now - cm_daemonCheckVolCBInterval/2 + (rand() % cm_daemonCheckVolCBInterval);
 400     lastLockCheck = now - cm_daemonCheckLockInterval/2 + (rand() % cm_daemonCheckLockInterval);
 401     lastDownServerCheck = now - cm_daemonCheckDownInterval/2 + (rand() % cm_daemonCheckDownInterval);
 402     lastUpServerCheck = now - cm_daemonCheckUpInterval/2 + (rand() % cm_daemonCheckUpInterval);
 403     lastTokenCacheCheck = now - cm_daemonTokenCheckInterval/2 + (rand() % cm_daemonTokenCheckInterval);
 404     lastBusyVolCheck = now - cm_daemonCheckOfflineVolInterval/2 * (rand() % cm_daemonCheckOfflineVolInterval);
 405     if (cm_daemonPerformanceTuningInterval)
 406         lastPerformanceCheck = now - cm_daemonPerformanceTuningInterval/2 * (rand() % cm_daemonPerformanceTuningInterval);
 407
 408     while (daemon_ShutdownFlag == 0) {
 409         /* check to see if the listener threads halted due to network
 410          * disconnect or other issues.  If so, attempt to restart them.
 411          */
 412         smb_RestartListeners(0);
 413
 414         if (daemon_ShutdownFlag == 1)
 415             break;
 416
 417         if (configureFirewall) {
 418             /* Open Microsoft Firewall to allow in port 7001 */
 419             switch (icf_CheckAndAddAFSPorts(AFS_PORTSET_CLIENT)) {
 420             case 0:
 421                 afsi_log("Windows Firewall Configuration succeeded");
 422                 configureFirewall = 0;
 423                 break;
 424             case 1:
 425                 afsi_log("Invalid Windows Firewall Port Set");
 426                 break;
 427             case 2:
 428                 afsi_log("Unable to open Windows Firewall Profile");
 429                 break;
 430             case 3:
 431                 afsi_log("Unable to create/modify Windows Firewall Port entries");
 432                 break;
 433             default:
 434                 afsi_log("Unknown Windows Firewall Configuration error");
 435             }
 436         }
 437
 438         /* find out what time it is */
 439         now = osi_Time();
 440
 441         /* Determine whether an address change took place that we need to respond to */
 442         if (bAddrChangeCheck)
 443             bAddrChangeCheck = 0;
 444
 445         if (lastIPAddrChange != 0 && lastIPAddrChange + 2500 < now) {
 446             bAddrChangeCheck = 1;
 447             lastIPAddrChange = 0;
 448         }
 449
 450         /* check down servers */
 451         if ((bAddrChangeCheck || now > lastDownServerCheck + cm_daemonCheckDownInterval) &&
 452             daemon_ShutdownFlag == 0) {
 453             lastDownServerCheck = now;
 454             osi_Log0(afsd_logp, "cm_Daemon CheckDownServers");
 455             cm_CheckServers(CM_FLAG_CHECKDOWNSERVERS, NULL);
 456             if (daemon_ShutdownFlag == 1)
 457                 break;
 458             now = osi_Time();
 459         }
 460
 461         if (bAddrChangeCheck)
 462             cm_ForceNewConnectionsAllServers();
 463
 464         /* check up servers */
 465         if ((bAddrChangeCheck || now > lastUpServerCheck + cm_daemonCheckUpInterval) &&
 466             daemon_ShutdownFlag == 0) {
 467             lastUpServerCheck = now;
 468             osi_Log0(afsd_logp, "cm_Daemon CheckUpServers");
 469             cm_CheckServers(CM_FLAG_CHECKUPSERVERS, NULL);
 470             if (daemon_ShutdownFlag == 1)
 471                 break;
 472             now = osi_Time();
 473         }
 474
 475         if (bAddrChangeCheck) {
 476             smb_CheckVCs();
 477             cm_VolStatus_Network_Addr_Change();
 478         }
 479
 480         if (now > lastVolCheck + cm_daemonCheckVolInterval &&
 481             daemon_ShutdownFlag == 0) {
 482             lastVolCheck = now;
 483             cm_RefreshVolumes();
 484             if (daemon_ShutdownFlag == 1)
 485                 break;
 486             now = osi_Time();
 487         }
 488
 489         if (cm_daemonCheckVolCBInterval &&
 490             now > lastVolCBRenewalCheck + cm_daemonCheckVolCBInterval &&
 491             daemon_ShutdownFlag == 0) {
 492             lastVolCBRenewalCheck = now;
 493             cm_VolumeRenewROCallbacks();
 494             if (daemon_ShutdownFlag == 1)
 495                 break;
 496             now = osi_Time();
 497         }
 498
 499         if ((bAddrChangeCheck || now > lastBusyVolCheck + cm_daemonCheckOfflineVolInterval) &&
 500             daemon_ShutdownFlag == 0) {
 501             lastVolCheck = now;
 502             cm_CheckOfflineVolumes();
 503             if (daemon_ShutdownFlag == 1)
 504                 break;
 505             now = osi_Time();
 506         }
 507
 508         if (now > lastCBExpirationCheck + cm_daemonCheckCBInterval &&
 509             daemon_ShutdownFlag == 0) {
 510             lastCBExpirationCheck = now;
 511             cm_CheckCBExpiration();
 512             if (daemon_ShutdownFlag == 1)
 513                 break;
 514             now = osi_Time();
 515         }
 516
 517         if (now > lastLockCheck + cm_daemonCheckLockInterval &&
 518             daemon_ShutdownFlag == 0) {
 519             lastLockCheck = now;
 520             cm_CheckLocks();
 521             if (daemon_ShutdownFlag == 1)
 522                 break;
 523             now = osi_Time();
 524         }
 525
 526         if (now > lastTokenCacheCheck + cm_daemonTokenCheckInterval &&
 527             daemon_ShutdownFlag == 0) {
 528             lastTokenCacheCheck = now;
 529             cm_CheckTokenCache(now);
 530             if (daemon_ShutdownFlag == 1)
 531                 break;
 532             now = osi_Time();
 533         }
 534
 535         /* allow an exit to be called prior to stopping the service */
 536         hHookDll = cm_LoadAfsdHookLib();
 537         if (hHookDll)
 538         {
 539             BOOL hookRc = TRUE;
 540             AfsdDaemonHook daemonHook = ( AfsdDaemonHook ) GetProcAddress(hHookDll, AFSD_DAEMON_HOOK);
 541             if (daemonHook)
 542             {
 543                 hookRc = daemonHook();
 544             }
 545             FreeLibrary(hHookDll);
 546             hHookDll = NULL;
 547
 548             if (hookRc == FALSE)
 549             {
 550                 SetEvent(WaitToTerminate);
 551             }
 552         }
 553
 554         if (daemon_ShutdownFlag == 1) {
 555             break;
 556         }
 557
 558         if (cm_daemonPerformanceTuningInterval &&
 559             now > lastPerformanceCheck + cm_daemonPerformanceTuningInterval &&
 560              daemon_ShutdownFlag == 0) {
 561             lastPerformanceCheck = now;
 562             cm_PerformanceTuningCheck();
 563             if (daemon_ShutdownFlag == 1)
 564                 break;
 565             now = osi_Time();
 566         }
 567
 568         thrd_Sleep(10000);              /* sleep 10 seconds */
 569     }
 570     thrd_SetEvent(cm_Daemon_ShutdownEvent);
 571 }
 572
 573 void cm_DaemonShutdown(void)
 574 {
 575     int i;
 576     DWORD code;
 577
 578     daemon_ShutdownFlag = 1;
 579     osi_Wakeup((LONG_PTR) &cm_bkgListp);
 580
 581     /* wait for shutdown */
 582     if (cm_Daemon_ShutdownEvent)
 583         code = thrd_WaitForSingleObject_Event(cm_Daemon_ShutdownEvent, INFINITE);
 584
 585     for ( i=0; i<cm_nDaemons; i++) {
 586         if (cm_BkgDaemon_ShutdownEvent[i])
 587             code = thrd_WaitForSingleObject_Event(cm_BkgDaemon_ShutdownEvent[i], INFINITE);
 588     }
 589
 590     if (cm_IPAddrDaemon_ShutdownEvent)
 591         code = thrd_WaitForSingleObject_Event(cm_IPAddrDaemon_ShutdownEvent, INFINITE);
 592 }
 593
 594 void cm_InitDaemon(int nDaemons)
 595 {
 596     static osi_once_t once;
 597     long pid;
 598     thread_t phandle;
 599     int i;
 600
 601     cm_nDaemons = (nDaemons > CM_MAX_DAEMONS) ? CM_MAX_DAEMONS : nDaemons;
 602
 603     if (osi_Once(&once)) {
 604         lock_InitializeRWLock(&cm_daemonLock, "cm_daemonLock",
 605                                LOCK_HIERARCHY_DAEMON_GLOBAL);
 606         osi_EndOnce(&once);
 607
 608         /* creating IP Address Change monitor daemon */
 609         phandle = thrd_Create((SecurityAttrib) 0, 0,
 610                                (ThreadFunc) cm_IpAddrDaemon, 0, 0, &pid, "cm_IpAddrDaemon");
 611         osi_assertx(phandle != NULL, "cm_IpAddrDaemon thread creation failure");
 612         thrd_CloseHandle(phandle);
 613
 614         /* creating pinging daemon */
 615         phandle = thrd_Create((SecurityAttrib) 0, 0,
 616                                (ThreadFunc) cm_Daemon, 0, 0, &pid, "cm_Daemon");
 617         osi_assertx(phandle != NULL, "cm_Daemon thread creation failure");
 618         thrd_CloseHandle(phandle);
 619
 620         for(i=0; i < cm_nDaemons; i++) {
 621             phandle = thrd_Create((SecurityAttrib) 0, 0,
 622                                    (ThreadFunc) cm_BkgDaemon, (LPVOID)i, 0, &pid,
 623                                    "cm_BkgDaemon");
 624             osi_assertx(phandle != NULL, "cm_BkgDaemon thread creation failure");
 625             thrd_CloseHandle(phandle);
 626         }
 627     }
 628 }