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 long cm_daemonRankServerInterval = 600;
  39
  40 osi_rwlock_t cm_daemonLock;
  41
  42 long cm_bkgQueueCount;          /* # of queued requests */
  43
  44 int cm_bkgWaitingForCount;      /* true if someone's waiting for cm_bkgQueueCount to drop */
  45
  46 cm_bkgRequest_t *cm_bkgListp;           /* first elt in the list of requests */
  47 cm_bkgRequest_t *cm_bkgListEndp;        /* last elt in the list of requests */
  48
  49 extern int powerStateSuspended;
  50 int daemon_ShutdownFlag = 0;
  51 static int cm_nDaemons = 0;
  52 static time_t lastIPAddrChange = 0;
  53
  54 static EVENT_HANDLE cm_Daemon_ShutdownEvent = NULL;
  55 static EVENT_HANDLE cm_IPAddrDaemon_ShutdownEvent = NULL;
  56 static EVENT_HANDLE cm_BkgDaemon_ShutdownEvent[CM_MAX_DAEMONS] =
  57        {NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL};
  58
  59 void cm_IpAddrDaemon(long parm)
  60 {
  61     extern void smb_CheckVCs(void);
  62     char * name = "cm_IPAddrDaemon_ShutdownEvent";
  63
  64     cm_IPAddrDaemon_ShutdownEvent = thrd_CreateEvent(NULL, FALSE, FALSE, name);
  65     if ( GetLastError() == ERROR_ALREADY_EXISTS )
  66         afsi_log("Event Object Already Exists: %s", name);
  67
  68     rx_StartClientThread();
  69
  70     while (daemon_ShutdownFlag == 0) {
  71         DWORD Result;
  72
  73         thrd_SetEvent(cm_IPAddrDaemon_ShutdownEvent);
  74         Result = NotifyAddrChange(NULL,NULL);
  75         if (Result == NO_ERROR && daemon_ShutdownFlag == 0) {
  76             lastIPAddrChange = osi_Time();
  77             smb_SetLanAdapterChangeDetected();
  78             cm_SetLanAdapterChangeDetected();
  79             thrd_ResetEvent(cm_IPAddrDaemon_ShutdownEvent);
  80         }
  81     }
  82
  83     thrd_SetEvent(cm_IPAddrDaemon_ShutdownEvent);
  84 }
  85
  86 void cm_BkgDaemon(void * parm)
  87 {
  88     cm_bkgRequest_t *rp;
  89     afs_int32 code;
  90     char name[32] = "";
  91     long daemonID = (long)parm;
  92
  93     snprintf(name, sizeof(name), "cm_BkgDaemon_ShutdownEvent%d", daemonID);
  94
  95     cm_BkgDaemon_ShutdownEvent[daemonID] = thrd_CreateEvent(NULL, FALSE, FALSE, name);
  96     if ( GetLastError() == ERROR_ALREADY_EXISTS )
  97         afsi_log("Event Object Already Exists: %s", name);
  98
  99     rx_StartClientThread();
 100
 101     lock_ObtainWrite(&cm_daemonLock);
 102     while (daemon_ShutdownFlag == 0) {
 103         if (powerStateSuspended) {
 104             Sleep(1000);
 105             continue;
 106         }
 107         if (!cm_bkgListEndp) {
 108             osi_SleepW((LONG_PTR)&cm_bkgListp, &cm_daemonLock);
 109             lock_ObtainWrite(&cm_daemonLock);
 110             continue;
 111         }
 112
 113         /* we found a request */
 114         for (rp = cm_bkgListEndp; rp; rp = (cm_bkgRequest_t *) osi_QPrev(&rp->q))
 115         {
 116             if (cm_ServerAvailable(&rp->scp->fid, rp->userp) &&
 117                 !(rp->scp->flags & CM_SCACHEFLAG_DATASTORING))
 118                 break;
 119         }
 120         if (rp == NULL) {
 121             /* we couldn't find a request that we could process at the current time */
 122             lock_ReleaseWrite(&cm_daemonLock);
 123             Sleep(1000);
 124             lock_ObtainWrite(&cm_daemonLock);
 125             continue;
 126         }
 127
 128         osi_QRemoveHT((osi_queue_t **) &cm_bkgListp, (osi_queue_t **) &cm_bkgListEndp, &rp->q);
 129         osi_assertx(cm_bkgQueueCount-- > 0, "cm_bkgQueueCount 0");
 130         lock_ReleaseWrite(&cm_daemonLock);
 131
 132         osi_Log1(afsd_logp,"cm_BkgDaemon processing request 0x%p", rp);
 133
 134 #ifdef DEBUG_REFCOUNT
 135         osi_Log2(afsd_logp,"cm_BkgDaemon (before) scp 0x%x ref %d",rp->scp, rp->scp->refCount);
 136 #endif
 137         code = (*rp->procp)(rp->scp, rp->p1, rp->p2, rp->p3, rp->p4, rp->userp);
 138 #ifdef DEBUG_REFCOUNT
 139         osi_Log2(afsd_logp,"cm_BkgDaemon (after) scp 0x%x ref %d",rp->scp, rp->scp->refCount);
 140 #endif
 141
 142         /*
 143          * Keep the following list synchronized with the
 144          * error code list in cm_BkgStore.
 145          * cm_SyncOpDone(CM_SCACHESYNC_ASYNCSTORE) will be called there unless
 146          * one of these errors has occurred.
 147          */
 148         switch ( code ) {
 149         case CM_ERROR_TIMEDOUT: /* or server restarting */
 150         case CM_ERROR_RETRY:
 151         case CM_ERROR_WOULDBLOCK:
 152         case CM_ERROR_ALLBUSY:
 153         case CM_ERROR_ALLDOWN:
 154         case CM_ERROR_ALLOFFLINE:
 155         case CM_ERROR_PARTIALWRITE:
 156             if (rp->procp == cm_BkgStore) {
 157                 osi_Log2(afsd_logp,
 158                          "cm_BkgDaemon re-queueing failed request 0x%p code 0x%x",
 159                          rp, code);
 160                 lock_ObtainWrite(&cm_daemonLock);
 161                 cm_bkgQueueCount++;
 162                 osi_QAddT((osi_queue_t **) &cm_bkgListp, (osi_queue_t **)&cm_bkgListEndp, &rp->q);
 163                 break;
 164             } /* otherwise fall through */
 165         case 0:  /* success */
 166         default: /* other error */
 167             if (code == 0)
 168                 osi_Log1(afsd_logp,"cm_BkgDaemon SUCCESS: request 0x%p", rp);
 169             else
 170                 osi_Log2(afsd_logp,"cm_BkgDaemon FAILED: request dropped 0x%p code 0x%x",
 171                          rp, code);
 172             cm_ReleaseUser(rp->userp);
 173             cm_ReleaseSCache(rp->scp);
 174             free(rp);
 175             lock_ObtainWrite(&cm_daemonLock);
 176         }
 177     }
 178     lock_ReleaseWrite(&cm_daemonLock);
 179     thrd_SetEvent(cm_BkgDaemon_ShutdownEvent[daemonID]);
 180 }
 181
 182 void cm_QueueBKGRequest(cm_scache_t *scp, cm_bkgProc_t *procp, afs_uint32 p1, afs_uint32 p2, afs_uint32 p3, afs_uint32 p4,
 183         cm_user_t *userp)
 184 {
 185     cm_bkgRequest_t *rp;
 186
 187     rp = malloc(sizeof(*rp));
 188     memset(rp, 0, sizeof(*rp));
 189
 190     cm_HoldSCache(scp);
 191     rp->scp = scp;
 192     cm_HoldUser(userp);
 193     rp->userp = userp;
 194     rp->procp = procp;
 195     rp->p1 = p1;
 196     rp->p2 = p2;
 197     rp->p3 = p3;
 198     rp->p4 = p4;
 199
 200     lock_ObtainWrite(&cm_daemonLock);
 201     cm_bkgQueueCount++;
 202     osi_QAdd((osi_queue_t **) &cm_bkgListp, &rp->q);
 203     if (!cm_bkgListEndp)
 204         cm_bkgListEndp = rp;
 205     lock_ReleaseWrite(&cm_daemonLock);
 206
 207     osi_Wakeup((LONG_PTR) &cm_bkgListp);
 208 }
 209
 210 static int
 211 IsWindowsFirewallPresent(void)
 212 {
 213     SC_HANDLE scm;
 214     SC_HANDLE svc;
 215     BOOLEAN flag;
 216     BOOLEAN result = FALSE;
 217     LPQUERY_SERVICE_CONFIG pConfig = NULL;
 218     DWORD BufSize;
 219     LONG status;
 220
 221     /* Open services manager */
 222     scm = OpenSCManager(NULL, NULL, GENERIC_READ);
 223     if (!scm) return FALSE;
 224
 225     /* Open Windows Firewall service */
 226     svc = OpenService(scm, "MpsSvc", SERVICE_QUERY_CONFIG);
 227     if (!svc) {
 228         afsi_log("MpsSvc Service could not be opened for query: 0x%x", GetLastError());
 229         svc = OpenService(scm, "SharedAccess", SERVICE_QUERY_CONFIG);
 230         if (!svc)
 231             afsi_log("SharedAccess Service could not be opened for query: 0x%x", GetLastError());
 232     }
 233     if (!svc)
 234         goto close_scm;
 235
 236     /* Query Windows Firewall service config, first just to get buffer size */
 237     /* Expected to fail, so don't test return value */
 238     (void) QueryServiceConfig(svc, NULL, 0, &BufSize);
 239     status = GetLastError();
 240     if (status != ERROR_INSUFFICIENT_BUFFER)
 241         goto close_svc;
 242
 243     /* Allocate buffer */
 244     pConfig = (LPQUERY_SERVICE_CONFIG)GlobalAlloc(GMEM_FIXED,BufSize);
 245     if (!pConfig)
 246         goto close_svc;
 247
 248     /* Query Windows Firewall service config, this time for real */
 249     flag = QueryServiceConfig(svc, pConfig, BufSize, &BufSize);
 250     if (!flag) {
 251         afsi_log("QueryServiceConfig failed: 0x%x", GetLastError());
 252         goto free_pConfig;
 253     }
 254
 255     /* Is it autostart? */
 256     afsi_log("AutoStart 0x%x", pConfig->dwStartType);
 257     if (pConfig->dwStartType < SERVICE_DEMAND_START)
 258         result = TRUE;
 259
 260   free_pConfig:
 261     GlobalFree(pConfig);
 262   close_svc:
 263     CloseServiceHandle(svc);
 264   close_scm:
 265     CloseServiceHandle(scm);
 266
 267     return result;
 268 }
 269
 270 void
 271 cm_DaemonCheckInit(void)
 272 {
 273     HKEY parmKey;
 274     DWORD dummyLen;
 275     DWORD dummy;
 276     DWORD code;
 277
 278     code = RegOpenKeyEx(HKEY_LOCAL_MACHINE, AFSREG_CLT_SVC_PARAM_SUBKEY,
 279                          0, KEY_QUERY_VALUE, &parmKey);
 280     if (code)
 281         return;
 282
 283     dummyLen = sizeof(DWORD);
 284     code = RegQueryValueEx(parmKey, "daemonCheckDownInterval", NULL, NULL,
 285                             (BYTE *) &dummy, &dummyLen);
 286     if (code == ERROR_SUCCESS && dummy)
 287         cm_daemonCheckDownInterval = dummy;
 288     afsi_log("daemonCheckDownInterval is %d", cm_daemonCheckDownInterval);
 289
 290     dummyLen = sizeof(DWORD);
 291     code = RegQueryValueEx(parmKey, "daemonCheckUpInterval", NULL, NULL,
 292                             (BYTE *) &dummy, &dummyLen);
 293     if (code == ERROR_SUCCESS && dummy)
 294         cm_daemonCheckUpInterval = dummy;
 295     afsi_log("daemonCheckUpInterval is %d", cm_daemonCheckUpInterval);
 296
 297     dummyLen = sizeof(DWORD);
 298     code = RegQueryValueEx(parmKey, "daemonCheckVolInterval", NULL, NULL,
 299                             (BYTE *) &dummy, &dummyLen);
 300     if (code == ERROR_SUCCESS && dummy)
 301         cm_daemonCheckVolInterval = dummy;
 302     afsi_log("daemonCheckVolInterval is %d", cm_daemonCheckVolInterval);
 303
 304     dummyLen = sizeof(DWORD);
 305     code = RegQueryValueEx(parmKey, "daemonCheckCBInterval", NULL, NULL,
 306                             (BYTE *) &dummy, &dummyLen);
 307     if (code == ERROR_SUCCESS && dummy)
 308         cm_daemonCheckCBInterval = dummy;
 309     afsi_log("daemonCheckCBInterval is %d", cm_daemonCheckCBInterval);
 310
 311     dummyLen = sizeof(DWORD);
 312     code = RegQueryValueEx(parmKey, "daemonCheckVolCBInterval", NULL, NULL,
 313                             (BYTE *) &dummy, &dummyLen);
 314     if (code == ERROR_SUCCESS && dummy)
 315         cm_daemonCheckVolCBInterval = dummy;
 316     afsi_log("daemonCheckVolCBInterval is %d", cm_daemonCheckVolCBInterval);
 317
 318     dummyLen = sizeof(DWORD);
 319     code = RegQueryValueEx(parmKey, "daemonCheckLockInterval", NULL, NULL,
 320                             (BYTE *) &dummy, &dummyLen);
 321     if (code == ERROR_SUCCESS && dummy)
 322         cm_daemonCheckLockInterval = dummy;
 323     afsi_log("daemonCheckLockInterval is %d", cm_daemonCheckLockInterval);
 324
 325     dummyLen = sizeof(DWORD);
 326     code = RegQueryValueEx(parmKey, "daemonCheckTokenInterval", NULL, NULL,
 327                             (BYTE *) &dummy, &dummyLen);
 328     if (code == ERROR_SUCCESS && dummy)
 329         cm_daemonTokenCheckInterval = dummy;
 330     afsi_log("daemonCheckTokenInterval is %d", cm_daemonTokenCheckInterval);
 331
 332     dummyLen = sizeof(DWORD);
 333     code = RegQueryValueEx(parmKey, "daemonCheckOfflineVolInterval", NULL, NULL,
 334                             (BYTE *) &dummy, &dummyLen);
 335     if (code == ERROR_SUCCESS && dummy)
 336         cm_daemonCheckOfflineVolInterval = dummy;
 337     afsi_log("daemonCheckOfflineVolInterval is %d", cm_daemonCheckOfflineVolInterval);
 338
 339     dummyLen = sizeof(DWORD);
 340     code = RegQueryValueEx(parmKey, "daemonPerformanceTuningInterval", NULL, NULL,
 341                             (BYTE *) &dummy, &dummyLen);
 342     dummyLen = sizeof(DWORD);
 343     code = RegQueryValueEx(parmKey, "daemonRankServerInterval", NULL, NULL,
 344                             (BYTE *) &dummy, &dummyLen);
 345     if (code == ERROR_SUCCESS && dummy)
 346         cm_daemonRankServerInterval = dummy;
 347     afsi_log("daemonRankServerInterval is %d", cm_daemonRankServerInterval);
 348
 349     if (code == ERROR_SUCCESS)
 350         cm_daemonPerformanceTuningInterval = dummy;
 351     afsi_log("daemonPerformanceTuningInterval is %d", cm_daemonPerformanceTuningInterval);
 352
 353     RegCloseKey(parmKey);
 354
 355     if (cm_daemonPerformanceTuningInterval)
 356         cm_PerformanceTuningInit();
 357 }
 358
 359 /* periodic check daemon */
 360 void cm_Daemon(long parm)
 361 {
 362     time_t now;
 363     time_t lastLockCheck;
 364     time_t lastVolCheck;
 365     time_t lastCBExpirationCheck;
 366     time_t lastVolCBRenewalCheck;
 367     time_t lastDownServerCheck;
 368     time_t lastUpServerCheck;
 369     time_t lastTokenCacheCheck;
 370     time_t lastBusyVolCheck;
 371     time_t lastPerformanceCheck;
 372     time_t lastServerRankCheck;
 373     char thostName[200];
 374     unsigned long code;
 375     struct hostent *thp;
 376     HMODULE hHookDll;
 377     char * name = "cm_Daemon_ShutdownEvent";
 378     int configureFirewall = IsWindowsFirewallPresent();
 379     int bAddrChangeCheck = 0;
 380
 381     cm_Daemon_ShutdownEvent = thrd_CreateEvent(NULL, FALSE, FALSE, name);
 382     if ( GetLastError() == ERROR_ALREADY_EXISTS )
 383         afsi_log("Event Object Already Exists: %s", name);
 384
 385     if (!configureFirewall) {
 386         afsi_log("No Windows Firewall detected");
 387     }
 388
 389     /* ping all file servers, up or down, with unauthenticated connection,
 390      * to find out whether we have all our callbacks from the server still.
 391      * Also, ping down VLDBs.
 392      */
 393     /*
 394      * Seed the random number generator with our own address, so that
 395      * clients starting at the same time don't all do vol checks at the
 396      * same time.
 397      */
 398     gethostname(thostName, sizeof(thostName));
 399     thp = gethostbyname(thostName);
 400     if (thp == NULL)    /* In djgpp, gethostname returns the netbios
 401                            name of the machine.  gethostbyname will fail
 402                            looking this up if it differs from DNS name. */
 403         code = 0;
 404     else
 405         memcpy(&code, thp->h_addr_list[0], 4);
 406
 407     srand(ntohl(code));
 408
 409     cm_DaemonCheckInit();
 410
 411     now = osi_Time();
 412     lastVolCheck = now - cm_daemonCheckVolInterval/2 + (rand() % cm_daemonCheckVolInterval);
 413     lastCBExpirationCheck = now - cm_daemonCheckCBInterval/2 + (rand() % cm_daemonCheckCBInterval);
 414     if (cm_daemonCheckVolCBInterval)
 415         lastVolCBRenewalCheck = now - cm_daemonCheckVolCBInterval/2 + (rand() % cm_daemonCheckVolCBInterval);
 416     lastLockCheck = now - cm_daemonCheckLockInterval/2 + (rand() % cm_daemonCheckLockInterval);
 417     lastDownServerCheck = now - cm_daemonCheckDownInterval/2 + (rand() % cm_daemonCheckDownInterval);
 418     lastUpServerCheck = now - cm_daemonCheckUpInterval/2 + (rand() % cm_daemonCheckUpInterval);
 419     lastTokenCacheCheck = now - cm_daemonTokenCheckInterval/2 + (rand() % cm_daemonTokenCheckInterval);
 420     lastBusyVolCheck = now - cm_daemonCheckOfflineVolInterval/2 * (rand() % cm_daemonCheckOfflineVolInterval);
 421     if (cm_daemonPerformanceTuningInterval)
 422         lastPerformanceCheck = now - cm_daemonPerformanceTuningInterval/2 * (rand() % cm_daemonPerformanceTuningInterval);
 423     lastServerRankCheck = now - cm_daemonRankServerInterval/2 * (rand() % cm_daemonRankServerInterval);
 424
 425     while (daemon_ShutdownFlag == 0) {
 426         if (powerStateSuspended) {
 427             Sleep(1000);
 428             continue;
 429         }
 430         /* check to see if the listener threads halted due to network
 431          * disconnect or other issues.  If so, attempt to restart them.
 432          */
 433         smb_RestartListeners(0);
 434
 435         if (daemon_ShutdownFlag == 1)
 436             break;
 437
 438         if (configureFirewall) {
 439             /* Open Microsoft Firewall to allow in port 7001 */
 440             switch (icf_CheckAndAddAFSPorts(AFS_PORTSET_CLIENT)) {
 441             case 0:
 442                 afsi_log("Windows Firewall Configuration succeeded");
 443                 configureFirewall = 0;
 444                 break;
 445             case 1:
 446                 afsi_log("Invalid Windows Firewall Port Set");
 447                 break;
 448             case 2:
 449                 afsi_log("Unable to open Windows Firewall Profile");
 450                 break;
 451             case 3:
 452                 afsi_log("Unable to create/modify Windows Firewall Port entries");
 453                 break;
 454             default:
 455                 afsi_log("Unknown Windows Firewall Configuration error");
 456             }
 457         }
 458
 459         /* find out what time it is */
 460         now = osi_Time();
 461
 462         /* Determine whether an address change took place that we need to respond to */
 463         if (bAddrChangeCheck)
 464             bAddrChangeCheck = 0;
 465
 466         if (lastIPAddrChange != 0 && lastIPAddrChange + 2500 < now) {
 467             bAddrChangeCheck = 1;
 468             lastIPAddrChange = 0;
 469         }
 470
 471         /* check down servers */
 472         if ((bAddrChangeCheck || now > lastDownServerCheck + cm_daemonCheckDownInterval) &&
 473             daemon_ShutdownFlag == 0 &&
 474             powerStateSuspended == 0) {
 475             lastDownServerCheck = now;
 476             osi_Log0(afsd_logp, "cm_Daemon CheckDownServers");
 477             cm_CheckServers(CM_FLAG_CHECKDOWNSERVERS, NULL);
 478             if (daemon_ShutdownFlag == 1)
 479                 break;
 480             now = osi_Time();
 481         }
 482
 483         if (bAddrChangeCheck &&
 484             daemon_ShutdownFlag == 0 &&
 485             powerStateSuspended == 0)
 486             cm_ForceNewConnectionsAllServers();
 487
 488         /* check up servers */
 489         if ((bAddrChangeCheck || now > lastUpServerCheck + cm_daemonCheckUpInterval) &&
 490             daemon_ShutdownFlag == 0 &&
 491             powerStateSuspended == 0) {
 492             lastUpServerCheck = now;
 493             osi_Log0(afsd_logp, "cm_Daemon CheckUpServers");
 494             cm_CheckServers(CM_FLAG_CHECKUPSERVERS, NULL);
 495             if (daemon_ShutdownFlag == 1)
 496                 break;
 497             now = osi_Time();
 498         }
 499
 500         if (bAddrChangeCheck &&
 501             daemon_ShutdownFlag == 0 &&
 502             powerStateSuspended == 0) {
 503             smb_CheckVCs();
 504             cm_VolStatus_Network_Addr_Change();
 505         }
 506
 507         if (now > lastVolCheck + cm_daemonCheckVolInterval &&
 508             daemon_ShutdownFlag == 0 &&
 509             powerStateSuspended == 0) {
 510             lastVolCheck = now;
 511             cm_RefreshVolumes();
 512             if (daemon_ShutdownFlag == 1)
 513                 break;
 514             now = osi_Time();
 515         }
 516
 517         /* Rank all up servers */
 518         if ((now > lastServerRankCheck + cm_daemonRankServerInterval) &&
 519             daemon_ShutdownFlag == 0 &&
 520             powerStateSuspended == 0) {
 521             lastServerRankCheck = now;
 522             osi_Log0(afsd_logp, "cm_Daemon RankServer");
 523             cm_RankUpServers();
 524             if(daemon_ShutdownFlag == 1)
 525                 break;
 526             now = osi_Time();
 527         }
 528
 529         if (cm_daemonCheckVolCBInterval &&
 530             now > lastVolCBRenewalCheck + cm_daemonCheckVolCBInterval &&
 531             daemon_ShutdownFlag == 0 &&
 532             powerStateSuspended == 0) {
 533             lastVolCBRenewalCheck = now;
 534             cm_VolumeRenewROCallbacks();
 535             if (daemon_ShutdownFlag == 1)
 536                 break;
 537             now = osi_Time();
 538         }
 539
 540         if ((bAddrChangeCheck || now > lastBusyVolCheck + cm_daemonCheckOfflineVolInterval) &&
 541             daemon_ShutdownFlag == 0 &&
 542             powerStateSuspended == 0) {
 543             lastVolCheck = now;
 544             cm_CheckOfflineVolumes();
 545             if (daemon_ShutdownFlag == 1)
 546                 break;
 547             now = osi_Time();
 548         }
 549
 550         if (now > lastCBExpirationCheck + cm_daemonCheckCBInterval &&
 551             daemon_ShutdownFlag == 0 &&
 552             powerStateSuspended == 0) {
 553             lastCBExpirationCheck = now;
 554             cm_CheckCBExpiration();
 555             if (daemon_ShutdownFlag == 1)
 556                 break;
 557             now = osi_Time();
 558         }
 559
 560         if (now > lastLockCheck + cm_daemonCheckLockInterval &&
 561             daemon_ShutdownFlag == 0 &&
 562             powerStateSuspended == 0) {
 563             lastLockCheck = now;
 564             cm_CheckLocks();
 565             if (daemon_ShutdownFlag == 1)
 566                 break;
 567             now = osi_Time();
 568         }
 569
 570         if (now > lastTokenCacheCheck + cm_daemonTokenCheckInterval &&
 571             daemon_ShutdownFlag == 0 &&
 572             powerStateSuspended == 0) {
 573             lastTokenCacheCheck = now;
 574             cm_CheckTokenCache(now);
 575             if (daemon_ShutdownFlag == 1)
 576                 break;
 577             now = osi_Time();
 578         }
 579
 580         /* allow an exit to be called prior to stopping the service */
 581         hHookDll = cm_LoadAfsdHookLib();
 582         if (hHookDll)
 583         {
 584             BOOL hookRc = TRUE;
 585             AfsdDaemonHook daemonHook = ( AfsdDaemonHook ) GetProcAddress(hHookDll, AFSD_DAEMON_HOOK);
 586             if (daemonHook)
 587             {
 588                 hookRc = daemonHook();
 589             }
 590             FreeLibrary(hHookDll);
 591             hHookDll = NULL;
 592
 593             if (hookRc == FALSE)
 594             {
 595                 SetEvent(WaitToTerminate);
 596             }
 597
 598             if (daemon_ShutdownFlag == 1) {
 599                 break;
 600             }
 601             now = osi_Time();
 602         }
 603
 604         if (cm_daemonPerformanceTuningInterval &&
 605             now > lastPerformanceCheck + cm_daemonPerformanceTuningInterval &&
 606             daemon_ShutdownFlag == 0 &&
 607             powerStateSuspended == 0) {
 608             lastPerformanceCheck = now;
 609             cm_PerformanceTuningCheck();
 610             if (daemon_ShutdownFlag == 1)
 611                 break;
 612             now = osi_Time();
 613         }
 614
 615         thrd_Sleep(10000);              /* sleep 10 seconds */
 616     }
 617     thrd_SetEvent(cm_Daemon_ShutdownEvent);
 618 }
 619
 620 void cm_DaemonShutdown(void)
 621 {
 622     int i;
 623     DWORD code;
 624
 625     daemon_ShutdownFlag = 1;
 626     osi_Wakeup((LONG_PTR) &cm_bkgListp);
 627
 628     /* wait for shutdown */
 629     if (cm_Daemon_ShutdownEvent)
 630         code = thrd_WaitForSingleObject_Event(cm_Daemon_ShutdownEvent, INFINITE);
 631
 632     for ( i=0; i<cm_nDaemons; i++) {
 633         if (cm_BkgDaemon_ShutdownEvent[i])
 634             code = thrd_WaitForSingleObject_Event(cm_BkgDaemon_ShutdownEvent[i], INFINITE);
 635     }
 636
 637     if (cm_IPAddrDaemon_ShutdownEvent)
 638         code = thrd_WaitForSingleObject_Event(cm_IPAddrDaemon_ShutdownEvent, INFINITE);
 639 }
 640
 641 void cm_InitDaemon(int nDaemons)
 642 {
 643     static osi_once_t once;
 644     long pid;
 645     thread_t phandle;
 646     int i;
 647
 648     cm_nDaemons = (nDaemons > CM_MAX_DAEMONS) ? CM_MAX_DAEMONS : nDaemons;
 649
 650     if (osi_Once(&once)) {
 651         lock_InitializeRWLock(&cm_daemonLock, "cm_daemonLock",
 652                                LOCK_HIERARCHY_DAEMON_GLOBAL);
 653         osi_EndOnce(&once);
 654
 655         /* creating IP Address Change monitor daemon */
 656         phandle = thrd_Create((SecurityAttrib) 0, 0,
 657                                (ThreadFunc) cm_IpAddrDaemon, 0, 0, &pid, "cm_IpAddrDaemon");
 658         osi_assertx(phandle != NULL, "cm_IpAddrDaemon thread creation failure");
 659         thrd_CloseHandle(phandle);
 660
 661         /* creating pinging daemon */
 662         phandle = thrd_Create((SecurityAttrib) 0, 0,
 663                                (ThreadFunc) cm_Daemon, 0, 0, &pid, "cm_Daemon");
 664         osi_assertx(phandle != NULL, "cm_Daemon thread creation failure");
 665         thrd_CloseHandle(phandle);
 666
 667         for(i=0; i < cm_nDaemons; i++) {
 668             phandle = thrd_Create((SecurityAttrib) 0, 0,
 669                                    (ThreadFunc) cm_BkgDaemon, (LPVOID)i, 0, &pid,
 670                                    "cm_BkgDaemon");
 671             osi_assertx(phandle != NULL, "cm_BkgDaemon thread creation failure");
 672             thrd_CloseHandle(phandle);
 673         }
 674     }
 675 }