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 <afsconfig.h>
  11 #include <afs/param.h>
  12 #include <roken.h>
  13
  14 #include <afs/stds.h>
  15
  16 #include <windows.h>
  17 #include <winsock2.h>
  18 #include <iphlpapi.h>
  19 #include <stdlib.h>
  20 #include <malloc.h>
  21 #include <string.h>
  22
  23 #include "afsd.h"
  24 #include "smb.h"
  25
  26 #include <rx/rx.h>
  27 #include <rx/rx_prototypes.h>
  28 #include <WINNT/afsreg.h>
  29
  30 #include "afsicf.h"
  31
  32 /* in seconds */
  33 long cm_daemonCheckDownInterval  = 180;
  34 long cm_daemonCheckUpInterval    = 240;
  35 long cm_daemonCheckVolInterval   = 3600;
  36 long cm_daemonCheckCBInterval    = 60;
  37 long cm_daemonCheckVolCBInterval = 0;
  38 long cm_daemonCheckLockInterval  = 2;
  39 long cm_daemonTokenCheckInterval = 180;
  40 long cm_daemonCheckOfflineVolInterval = 600;
  41 long cm_daemonPerformanceTuningInterval = 0;
  42 long cm_daemonRankServerInterval = 600;
  43
  44 osi_rwlock_t cm_daemonLock;
  45
  46 long cm_bkgQueueCount;          /* # of queued requests */
  47
  48 int cm_bkgWaitingForCount;      /* true if someone's waiting for cm_bkgQueueCount to drop */
  49
  50 cm_bkgRequest_t *cm_bkgListp;           /* first elt in the list of requests */
  51 cm_bkgRequest_t *cm_bkgListEndp;        /* last elt in the list of requests */
  52
  53 extern int powerStateSuspended;
  54 int daemon_ShutdownFlag = 0;
  55 static int cm_nDaemons = 0;
  56 static time_t lastIPAddrChange = 0;
  57
  58 static EVENT_HANDLE cm_Daemon_ShutdownEvent = NULL;
  59 static EVENT_HANDLE cm_LockDaemon_ShutdownEvent = NULL;
  60 static EVENT_HANDLE cm_IPAddrDaemon_ShutdownEvent = NULL;
  61 static EVENT_HANDLE cm_BkgDaemon_ShutdownEvent[CM_MAX_DAEMONS] =
  62        {NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL};
  63
  64 void cm_IpAddrDaemon(long parm)
  65 {
  66     extern void smb_CheckVCs(void);
  67     char * name = "cm_IPAddrDaemon_ShutdownEvent";
  68
  69     cm_IPAddrDaemon_ShutdownEvent = thrd_CreateEvent(NULL, FALSE, FALSE, name);
  70     if ( GetLastError() == ERROR_ALREADY_EXISTS )
  71         afsi_log("Event Object Already Exists: %s", name);
  72
  73     rx_StartClientThread();
  74
  75     while (daemon_ShutdownFlag == 0) {
  76         DWORD Result;
  77
  78         thrd_SetEvent(cm_IPAddrDaemon_ShutdownEvent);
  79         Result = NotifyAddrChange(NULL,NULL);
  80         if (Result == NO_ERROR && daemon_ShutdownFlag == 0) {
  81             lastIPAddrChange = osi_Time();
  82             smb_SetLanAdapterChangeDetected();
  83             cm_SetLanAdapterChangeDetected();
  84             thrd_ResetEvent(cm_IPAddrDaemon_ShutdownEvent);
  85         }
  86     }
  87
  88     thrd_SetEvent(cm_IPAddrDaemon_ShutdownEvent);
  89 }
  90
  91 void cm_BkgDaemon(void * parm)
  92 {
  93     cm_bkgRequest_t *rp;
  94     afs_int32 code;
  95     char name[32] = "";
  96     long daemonID = (long)(LONG_PTR)parm;
  97
  98     snprintf(name, sizeof(name), "cm_BkgDaemon_ShutdownEvent%u", daemonID);
  99
 100     cm_BkgDaemon_ShutdownEvent[daemonID] = thrd_CreateEvent(NULL, FALSE, FALSE, name);
 101     if ( GetLastError() == ERROR_ALREADY_EXISTS )
 102         afsi_log("Event Object Already Exists: %s", name);
 103
 104     rx_StartClientThread();
 105
 106     lock_ObtainWrite(&cm_daemonLock);
 107     while (daemon_ShutdownFlag == 0) {
 108         if (powerStateSuspended) {
 109             Sleep(1000);
 110             continue;
 111         }
 112         if (!cm_bkgListEndp) {
 113             osi_SleepW((LONG_PTR)&cm_bkgListp, &cm_daemonLock);
 114             lock_ObtainWrite(&cm_daemonLock);
 115             continue;
 116         }
 117
 118         /* we found a request */
 119         for (rp = cm_bkgListEndp; rp; rp = (cm_bkgRequest_t *) osi_QPrev(&rp->q))
 120         {
 121             if (cm_ServerAvailable(&rp->scp->fid, rp->userp) ||
 122                 rp->scp->flags & CM_SCACHEFLAG_DELETED)
 123                 break;
 124         }
 125         if (rp == NULL) {
 126             /* we couldn't find a request that we could process at the current time */
 127             lock_ReleaseWrite(&cm_daemonLock);
 128             Sleep(1000);
 129             lock_ObtainWrite(&cm_daemonLock);
 130             continue;
 131         }
 132
 133         osi_QRemoveHT((osi_queue_t **) &cm_bkgListp, (osi_queue_t **) &cm_bkgListEndp, &rp->q);
 134         osi_assertx(cm_bkgQueueCount-- > 0, "cm_bkgQueueCount 0");
 135         lock_ReleaseWrite(&cm_daemonLock);
 136
 137         osi_Log1(afsd_logp,"cm_BkgDaemon processing request 0x%p", rp);
 138
 139         if (rp->scp->flags & CM_SCACHEFLAG_DELETED) {
 140             osi_Log1(afsd_logp,"cm_BkgDaemon DELETED scp 0x%x",rp->scp);
 141             code = CM_ERROR_BADFD;
 142         } else {
 143 #ifdef DEBUG_REFCOUNT
 144             osi_Log2(afsd_logp,"cm_BkgDaemon (before) scp 0x%x ref %d",rp->scp, rp->scp->refCount);
 145 #endif
 146             code = (*rp->procp)(rp->scp, rp->p1, rp->p2, rp->p3, rp->p4, rp->userp);
 147 #ifdef DEBUG_REFCOUNT
 148             osi_Log2(afsd_logp,"cm_BkgDaemon (after) scp 0x%x ref %d",rp->scp, rp->scp->refCount);
 149 #endif
 150         }
 151
 152         /*
 153          * Keep the following list synchronized with the
 154          * error code list in cm_BkgStore.
 155          * cm_SyncOpDone(CM_SCACHESYNC_ASYNCSTORE) will be called there unless
 156          * one of these errors has occurred.
 157          */
 158         switch ( code ) {
 159         case CM_ERROR_TIMEDOUT: /* or server restarting */
 160         case CM_ERROR_RETRY:
 161         case CM_ERROR_WOULDBLOCK:
 162         case CM_ERROR_ALLBUSY:
 163         case CM_ERROR_ALLDOWN:
 164         case CM_ERROR_ALLOFFLINE:
 165         case CM_ERROR_PARTIALWRITE:
 166             if (rp->procp == cm_BkgStore) {
 167                 osi_Log2(afsd_logp,
 168                          "cm_BkgDaemon re-queueing failed request 0x%p code 0x%x",
 169                          rp, code);
 170                 lock_ObtainWrite(&cm_daemonLock);
 171                 cm_bkgQueueCount++;
 172                 osi_QAddT((osi_queue_t **) &cm_bkgListp, (osi_queue_t **)&cm_bkgListEndp, &rp->q);
 173                 break;
 174             } /* otherwise fall through */
 175         case 0:  /* success */
 176         default: /* other error */
 177             if (code == 0)
 178                 osi_Log1(afsd_logp,"cm_BkgDaemon SUCCESS: request 0x%p", rp);
 179             else
 180                 osi_Log2(afsd_logp,"cm_BkgDaemon FAILED: request dropped 0x%p code 0x%x",
 181                          rp, code);
 182             cm_ReleaseUser(rp->userp);
 183             cm_ReleaseSCache(rp->scp);
 184             free(rp);
 185             lock_ObtainWrite(&cm_daemonLock);
 186         }
 187     }
 188     lock_ReleaseWrite(&cm_daemonLock);
 189     thrd_SetEvent(cm_BkgDaemon_ShutdownEvent[daemonID]);
 190 }
 191
 192 void cm_QueueBKGRequest(cm_scache_t *scp, cm_bkgProc_t *procp, afs_uint32 p1, afs_uint32 p2, afs_uint32 p3, afs_uint32 p4,
 193         cm_user_t *userp)
 194 {
 195     cm_bkgRequest_t *rp;
 196
 197     rp = malloc(sizeof(*rp));
 198     memset(rp, 0, sizeof(*rp));
 199
 200     cm_HoldSCache(scp);
 201     rp->scp = scp;
 202     cm_HoldUser(userp);
 203     rp->userp = userp;
 204     rp->procp = procp;
 205     rp->p1 = p1;
 206     rp->p2 = p2;
 207     rp->p3 = p3;
 208     rp->p4 = p4;
 209
 210     lock_ObtainWrite(&cm_daemonLock);
 211     cm_bkgQueueCount++;
 212     osi_QAdd((osi_queue_t **) &cm_bkgListp, &rp->q);
 213     if (!cm_bkgListEndp)
 214         cm_bkgListEndp = rp;
 215     lock_ReleaseWrite(&cm_daemonLock);
 216
 217     osi_Wakeup((LONG_PTR) &cm_bkgListp);
 218 }
 219
 220 static int
 221 IsWindowsFirewallPresent(void)
 222 {
 223     SC_HANDLE scm;
 224     SC_HANDLE svc;
 225     BOOLEAN flag;
 226     BOOLEAN result = FALSE;
 227     LPQUERY_SERVICE_CONFIG pConfig = NULL;
 228     DWORD BufSize;
 229     LONG status;
 230
 231     /* Open services manager */
 232     scm = OpenSCManager(NULL, NULL, GENERIC_READ);
 233     if (!scm) return FALSE;
 234
 235     /* Open Windows Firewall service */
 236     svc = OpenService(scm, "MpsSvc", SERVICE_QUERY_CONFIG);
 237     if (!svc) {
 238         afsi_log("MpsSvc Service could not be opened for query: 0x%x", GetLastError());
 239         svc = OpenService(scm, "SharedAccess", SERVICE_QUERY_CONFIG);
 240         if (!svc)
 241             afsi_log("SharedAccess Service could not be opened for query: 0x%x", GetLastError());
 242     }
 243     if (!svc)
 244         goto close_scm;
 245
 246     /* Query Windows Firewall service config, first just to get buffer size */
 247     /* Expected to fail, so don't test return value */
 248     (void) QueryServiceConfig(svc, NULL, 0, &BufSize);
 249     status = GetLastError();
 250     if (status != ERROR_INSUFFICIENT_BUFFER)
 251         goto close_svc;
 252
 253     /* Allocate buffer */
 254     pConfig = (LPQUERY_SERVICE_CONFIG)GlobalAlloc(GMEM_FIXED,BufSize);
 255     if (!pConfig)
 256         goto close_svc;
 257
 258     /* Query Windows Firewall service config, this time for real */
 259     flag = QueryServiceConfig(svc, pConfig, BufSize, &BufSize);
 260     if (!flag) {
 261         afsi_log("QueryServiceConfig failed: 0x%x", GetLastError());
 262         goto free_pConfig;
 263     }
 264
 265     /* Is it autostart? */
 266     afsi_log("AutoStart 0x%x", pConfig->dwStartType);
 267     if (pConfig->dwStartType < SERVICE_DEMAND_START)
 268         result = TRUE;
 269
 270   free_pConfig:
 271     GlobalFree(pConfig);
 272   close_svc:
 273     CloseServiceHandle(svc);
 274   close_scm:
 275     CloseServiceHandle(scm);
 276
 277     return result;
 278 }
 279
 280 void
 281 cm_DaemonCheckInit(void)
 282 {
 283     HKEY parmKey;
 284     DWORD dummyLen;
 285     DWORD dummy;
 286     DWORD code;
 287
 288     code = RegOpenKeyEx(HKEY_LOCAL_MACHINE, AFSREG_CLT_SVC_PARAM_SUBKEY,
 289                          0, KEY_QUERY_VALUE, &parmKey);
 290     if (code)
 291         return;
 292
 293     dummyLen = sizeof(DWORD);
 294     code = RegQueryValueEx(parmKey, "daemonCheckDownInterval", NULL, NULL,
 295                             (BYTE *) &dummy, &dummyLen);
 296     if (code == ERROR_SUCCESS && dummy)
 297         cm_daemonCheckDownInterval = dummy;
 298     afsi_log("daemonCheckDownInterval is %d", cm_daemonCheckDownInterval);
 299
 300     dummyLen = sizeof(DWORD);
 301     code = RegQueryValueEx(parmKey, "daemonCheckUpInterval", NULL, NULL,
 302                             (BYTE *) &dummy, &dummyLen);
 303     if (code == ERROR_SUCCESS && dummy)
 304         cm_daemonCheckUpInterval = dummy;
 305     afsi_log("daemonCheckUpInterval is %d", cm_daemonCheckUpInterval);
 306
 307     dummyLen = sizeof(DWORD);
 308     code = RegQueryValueEx(parmKey, "daemonCheckVolInterval", NULL, NULL,
 309                             (BYTE *) &dummy, &dummyLen);
 310     if (code == ERROR_SUCCESS && dummy)
 311         cm_daemonCheckVolInterval = dummy;
 312     afsi_log("daemonCheckVolInterval is %d", cm_daemonCheckVolInterval);
 313
 314     dummyLen = sizeof(DWORD);
 315     code = RegQueryValueEx(parmKey, "daemonCheckCBInterval", NULL, NULL,
 316                             (BYTE *) &dummy, &dummyLen);
 317     if (code == ERROR_SUCCESS && dummy)
 318         cm_daemonCheckCBInterval = dummy;
 319     afsi_log("daemonCheckCBInterval is %d", cm_daemonCheckCBInterval);
 320
 321     dummyLen = sizeof(DWORD);
 322     code = RegQueryValueEx(parmKey, "daemonCheckVolCBInterval", NULL, NULL,
 323                             (BYTE *) &dummy, &dummyLen);
 324     if (code == ERROR_SUCCESS && dummy)
 325         cm_daemonCheckVolCBInterval = dummy;
 326     afsi_log("daemonCheckVolCBInterval is %d", cm_daemonCheckVolCBInterval);
 327
 328     dummyLen = sizeof(DWORD);
 329     code = RegQueryValueEx(parmKey, "daemonCheckLockInterval", NULL, NULL,
 330                             (BYTE *) &dummy, &dummyLen);
 331     if (code == ERROR_SUCCESS && dummy)
 332         cm_daemonCheckLockInterval = dummy;
 333     afsi_log("daemonCheckLockInterval is %d", cm_daemonCheckLockInterval);
 334
 335     dummyLen = sizeof(DWORD);
 336     code = RegQueryValueEx(parmKey, "daemonCheckTokenInterval", NULL, NULL,
 337                             (BYTE *) &dummy, &dummyLen);
 338     if (code == ERROR_SUCCESS && dummy)
 339         cm_daemonTokenCheckInterval = dummy;
 340     afsi_log("daemonCheckTokenInterval is %d", cm_daemonTokenCheckInterval);
 341
 342     dummyLen = sizeof(DWORD);
 343     code = RegQueryValueEx(parmKey, "daemonCheckOfflineVolInterval", NULL, NULL,
 344                             (BYTE *) &dummy, &dummyLen);
 345     if (code == ERROR_SUCCESS && dummy)
 346         cm_daemonCheckOfflineVolInterval = dummy;
 347     afsi_log("daemonCheckOfflineVolInterval is %d", cm_daemonCheckOfflineVolInterval);
 348
 349     dummyLen = sizeof(DWORD);
 350     code = RegQueryValueEx(parmKey, "daemonPerformanceTuningInterval", NULL, NULL,
 351                             (BYTE *) &dummy, &dummyLen);
 352     if (code == ERROR_SUCCESS)
 353         cm_daemonPerformanceTuningInterval = dummy;
 354     afsi_log("daemonPerformanceTuningInterval is %d", cm_daemonPerformanceTuningInterval);
 355
 356     dummyLen = sizeof(DWORD);
 357     code = RegQueryValueEx(parmKey, "daemonRankServerInterval", NULL, NULL,
 358                             (BYTE *) &dummy, &dummyLen);
 359     if (code == ERROR_SUCCESS && dummy)
 360         cm_daemonRankServerInterval = dummy;
 361     afsi_log("daemonRankServerInterval is %d", cm_daemonRankServerInterval);
 362
 363     RegCloseKey(parmKey);
 364
 365     if (cm_daemonPerformanceTuningInterval)
 366         cm_PerformanceTuningInit();
 367 }
 368
 369 /* periodic lock check daemon */
 370 void cm_LockDaemon(long parm)
 371 {
 372     time_t now;
 373     time_t lastLockCheck;
 374     char * name = "cm_LockDaemon_ShutdownEvent";
 375
 376     cm_LockDaemon_ShutdownEvent = thrd_CreateEvent(NULL, FALSE, FALSE, name);
 377     if ( GetLastError() == ERROR_ALREADY_EXISTS )
 378         afsi_log("Event Object Already Exists: %s", name);
 379
 380     now = osi_Time();
 381     lastLockCheck = now - cm_daemonCheckLockInterval/2 + (rand() % cm_daemonCheckLockInterval);
 382
 383     while (daemon_ShutdownFlag == 0) {
 384         if (powerStateSuspended) {
 385             Sleep(1000);
 386             continue;
 387         }
 388
 389         now = osi_Time();
 390
 391         if (now > lastLockCheck + cm_daemonCheckLockInterval &&
 392             daemon_ShutdownFlag == 0 &&
 393             powerStateSuspended == 0) {
 394             lastLockCheck = now;
 395             cm_CheckLocks();
 396             if (daemon_ShutdownFlag == 1)
 397                 break;
 398         }
 399
 400         thrd_Sleep(1000);               /* sleep 1 second */
 401     }
 402     thrd_SetEvent(cm_LockDaemon_ShutdownEvent);
 403 }
 404
 405 /* periodic check daemon */
 406 void cm_Daemon(long parm)
 407 {
 408     time_t now;
 409     time_t lastVolCheck;
 410     time_t lastCBExpirationCheck;
 411     time_t lastVolCBRenewalCheck;
 412     time_t lastDownServerCheck;
 413     time_t lastUpServerCheck;
 414     time_t lastTokenCacheCheck;
 415     time_t lastBusyVolCheck;
 416     time_t lastPerformanceCheck;
 417     time_t lastServerRankCheck;
 418     char thostName[200];
 419     unsigned long code;
 420     struct hostent *thp;
 421     HMODULE hHookDll;
 422     char * name = "cm_Daemon_ShutdownEvent";
 423     int configureFirewall = IsWindowsFirewallPresent();
 424     int bAddrChangeCheck = 0;
 425
 426     cm_Daemon_ShutdownEvent = thrd_CreateEvent(NULL, FALSE, FALSE, name);
 427     if ( GetLastError() == ERROR_ALREADY_EXISTS )
 428         afsi_log("Event Object Already Exists: %s", name);
 429
 430     if (!configureFirewall) {
 431         afsi_log("No Windows Firewall detected");
 432     }
 433
 434     if (cm_freelanceEnabled && cm_freelanceImportCellServDB)
 435         cm_FreelanceImportCellServDB();
 436
 437     /* ping all file servers, up or down, with unauthenticated connection,
 438      * to find out whether we have all our callbacks from the server still.
 439      * Also, ping down VLDBs.
 440      */
 441     /*
 442      * Seed the random number generator with our own address, so that
 443      * clients starting at the same time don't all do vol checks at the
 444      * same time.
 445      */
 446     gethostname(thostName, sizeof(thostName));
 447     thp = gethostbyname(thostName);
 448     if (thp == NULL)    /* In djgpp, gethostname returns the netbios
 449                            name of the machine.  gethostbyname will fail
 450                            looking this up if it differs from DNS name. */
 451         code = 0;
 452     else
 453         memcpy(&code, thp->h_addr_list[0], 4);
 454
 455     srand(ntohl(code));
 456
 457     cm_DaemonCheckInit();
 458
 459     now = osi_Time();
 460     lastVolCheck = now - cm_daemonCheckVolInterval/2 + (rand() % cm_daemonCheckVolInterval);
 461     lastCBExpirationCheck = now - cm_daemonCheckCBInterval/2 + (rand() % cm_daemonCheckCBInterval);
 462     if (cm_daemonCheckVolCBInterval)
 463         lastVolCBRenewalCheck = now - cm_daemonCheckVolCBInterval/2 + (rand() % cm_daemonCheckVolCBInterval);
 464     lastDownServerCheck = now - cm_daemonCheckDownInterval/2 + (rand() % cm_daemonCheckDownInterval);
 465     lastUpServerCheck = now - cm_daemonCheckUpInterval/2 + (rand() % cm_daemonCheckUpInterval);
 466     lastTokenCacheCheck = now - cm_daemonTokenCheckInterval/2 + (rand() % cm_daemonTokenCheckInterval);
 467     lastBusyVolCheck = now - cm_daemonCheckOfflineVolInterval/2 * (rand() % cm_daemonCheckOfflineVolInterval);
 468     if (cm_daemonPerformanceTuningInterval)
 469         lastPerformanceCheck = now - cm_daemonPerformanceTuningInterval/2 * (rand() % cm_daemonPerformanceTuningInterval);
 470     lastServerRankCheck = now - cm_daemonRankServerInterval/2 * (rand() % cm_daemonRankServerInterval);
 471
 472     while (daemon_ShutdownFlag == 0) {
 473         if (powerStateSuspended) {
 474             Sleep(1000);
 475             continue;
 476         }
 477         /* check to see if the listener threads halted due to network
 478          * disconnect or other issues.  If so, attempt to restart them.
 479          */
 480         smb_RestartListeners(0);
 481
 482         if (daemon_ShutdownFlag == 1)
 483             break;
 484
 485         if (configureFirewall) {
 486             /* Open Microsoft Firewall to allow in port 7001 */
 487             switch (icf_CheckAndAddAFSPorts(AFS_PORTSET_CLIENT)) {
 488             case 0:
 489                 afsi_log("Windows Firewall Configuration succeeded");
 490                 configureFirewall = 0;
 491                 break;
 492             case 1:
 493                 afsi_log("Invalid Windows Firewall Port Set");
 494                 break;
 495             case 2:
 496                 afsi_log("Unable to open Windows Firewall Profile");
 497                 break;
 498             case 3:
 499                 afsi_log("Unable to create/modify Windows Firewall Port entries");
 500                 break;
 501             default:
 502                 afsi_log("Unknown Windows Firewall Configuration error");
 503             }
 504         }
 505
 506         /* find out what time it is */
 507         now = osi_Time();
 508
 509         /* Determine whether an address change took place that we need to respond to */
 510         if (bAddrChangeCheck)
 511             bAddrChangeCheck = 0;
 512
 513         if (lastIPAddrChange != 0 && lastIPAddrChange + 2500 < now) {
 514             bAddrChangeCheck = 1;
 515             lastIPAddrChange = 0;
 516         }
 517
 518         /* check down servers */
 519         if ((bAddrChangeCheck || now > lastDownServerCheck + cm_daemonCheckDownInterval) &&
 520             daemon_ShutdownFlag == 0 &&
 521             powerStateSuspended == 0) {
 522             lastDownServerCheck = now;
 523             osi_Log0(afsd_logp, "cm_Daemon CheckDownServers");
 524             cm_CheckServers(CM_FLAG_CHECKDOWNSERVERS, NULL);
 525             if (daemon_ShutdownFlag == 1)
 526                 break;
 527             now = osi_Time();
 528         }
 529
 530         if (bAddrChangeCheck &&
 531             daemon_ShutdownFlag == 0 &&
 532             powerStateSuspended == 0) {
 533             cm_ForceNewConnectionsAllServers();
 534         }
 535
 536         /* check up servers */
 537         if ((bAddrChangeCheck || now > lastUpServerCheck + cm_daemonCheckUpInterval) &&
 538             daemon_ShutdownFlag == 0 &&
 539             powerStateSuspended == 0) {
 540             lastUpServerCheck = now;
 541             osi_Log0(afsd_logp, "cm_Daemon CheckUpServers");
 542             cm_CheckServers(CM_FLAG_CHECKUPSERVERS, NULL);
 543             if (daemon_ShutdownFlag == 1)
 544                 break;
 545             now = osi_Time();
 546         }
 547
 548         if (bAddrChangeCheck &&
 549             daemon_ShutdownFlag == 0 &&
 550             powerStateSuspended == 0) {
 551             smb_CheckVCs();
 552             cm_VolStatus_Network_Addr_Change();
 553         }
 554
 555         /*
 556          * Once every five minutes inspect the volume list and enforce
 557          * the volume location expiration time.
 558          */
 559         if (now > lastVolCheck + 300 &&
 560             daemon_ShutdownFlag == 0 &&
 561             powerStateSuspended == 0) {
 562             lastVolCheck = now;
 563             cm_RefreshVolumes(cm_daemonCheckVolInterval);
 564             if (daemon_ShutdownFlag == 1)
 565                 break;
 566             now = osi_Time();
 567         }
 568
 569         /* Rank all up servers */
 570         if ((now > lastServerRankCheck + cm_daemonRankServerInterval) &&
 571             daemon_ShutdownFlag == 0 &&
 572             powerStateSuspended == 0) {
 573             lastServerRankCheck = now;
 574             osi_Log0(afsd_logp, "cm_Daemon RankServer");
 575             cm_RankUpServers();
 576             if(daemon_ShutdownFlag == 1)
 577                 break;
 578             now = osi_Time();
 579         }
 580
 581         if (cm_daemonCheckVolCBInterval &&
 582             now > lastVolCBRenewalCheck + cm_daemonCheckVolCBInterval &&
 583             daemon_ShutdownFlag == 0 &&
 584             powerStateSuspended == 0) {
 585             lastVolCBRenewalCheck = now;
 586             cm_VolumeRenewROCallbacks();
 587             if (daemon_ShutdownFlag == 1)
 588                 break;
 589             now = osi_Time();
 590         }
 591
 592         if ((bAddrChangeCheck || now > lastBusyVolCheck + cm_daemonCheckOfflineVolInterval) &&
 593             daemon_ShutdownFlag == 0 &&
 594             powerStateSuspended == 0) {
 595             lastBusyVolCheck = now;
 596             cm_CheckOfflineVolumes();
 597             if (daemon_ShutdownFlag == 1)
 598                 break;
 599             now = osi_Time();
 600         }
 601
 602         if (now > lastCBExpirationCheck + cm_daemonCheckCBInterval &&
 603             daemon_ShutdownFlag == 0 &&
 604             powerStateSuspended == 0) {
 605             lastCBExpirationCheck = now;
 606             cm_CheckCBExpiration();
 607             if (daemon_ShutdownFlag == 1)
 608                 break;
 609             now = osi_Time();
 610         }
 611
 612         if (now > lastTokenCacheCheck + cm_daemonTokenCheckInterval &&
 613             daemon_ShutdownFlag == 0 &&
 614             powerStateSuspended == 0) {
 615             lastTokenCacheCheck = now;
 616             cm_CheckTokenCache(now);
 617             if (daemon_ShutdownFlag == 1)
 618                 break;
 619             now = osi_Time();
 620         }
 621
 622         /* allow an exit to be called prior to stopping the service */
 623         hHookDll = cm_LoadAfsdHookLib();
 624         if (hHookDll)
 625         {
 626             BOOL hookRc = TRUE;
 627             AfsdDaemonHook daemonHook = ( AfsdDaemonHook ) GetProcAddress(hHookDll, AFSD_DAEMON_HOOK);
 628             if (daemonHook)
 629             {
 630                 hookRc = daemonHook();
 631             }
 632             FreeLibrary(hHookDll);
 633             hHookDll = NULL;
 634
 635             if (hookRc == FALSE)
 636             {
 637                 SetEvent(WaitToTerminate);
 638             }
 639
 640             if (daemon_ShutdownFlag == 1) {
 641                 break;
 642             }
 643             now = osi_Time();
 644         }
 645
 646         if (cm_daemonPerformanceTuningInterval &&
 647             now > lastPerformanceCheck + cm_daemonPerformanceTuningInterval &&
 648             daemon_ShutdownFlag == 0 &&
 649             powerStateSuspended == 0) {
 650             lastPerformanceCheck = now;
 651             cm_PerformanceTuningCheck();
 652             if (daemon_ShutdownFlag == 1)
 653                 break;
 654             now = osi_Time();
 655         }
 656
 657         /*
 658          * sleep .5 seconds.  if the thread blocks for a long time
 659          * we risk not being able to close the cache before Windows
 660          * kills our process during system shutdown.
 661          */
 662         thrd_Sleep(500);
 663     }
 664
 665     thrd_SetEvent(cm_Daemon_ShutdownEvent);
 666 }
 667
 668 void cm_DaemonShutdown(void)
 669 {
 670     int i;
 671     DWORD code;
 672
 673     daemon_ShutdownFlag = 1;
 674     osi_Wakeup((LONG_PTR) &cm_bkgListp);
 675
 676     /* wait for shutdown */
 677     for ( i=0; i<cm_nDaemons; i++) {
 678         if (cm_BkgDaemon_ShutdownEvent[i])
 679             code = thrd_WaitForSingleObject_Event(cm_BkgDaemon_ShutdownEvent[i], INFINITE);
 680     }
 681
 682     if (cm_Daemon_ShutdownEvent)
 683         code = thrd_WaitForSingleObject_Event(cm_Daemon_ShutdownEvent, INFINITE);
 684
 685     if (cm_LockDaemon_ShutdownEvent)
 686         code = thrd_WaitForSingleObject_Event(cm_LockDaemon_ShutdownEvent, INFINITE);
 687
 688 #if 0
 689     /*
 690      * Do not waste precious time waiting for the ipaddr daemon to shutdown.
 691      * When it does it means we have lost our network connection and we need
 692      * it during cache shutdown in order to notify the file servers that this
 693      * client is giving up all callbacks.
 694      */
 695     if (cm_IPAddrDaemon_ShutdownEvent)
 696         code = thrd_WaitForSingleObject_Event(cm_IPAddrDaemon_ShutdownEvent, INFINITE);
 697 #endif
 698 }
 699
 700 void cm_InitDaemon(int nDaemons)
 701 {
 702     static osi_once_t once;
 703     long pid;
 704     thread_t phandle;
 705     int i;
 706
 707     cm_nDaemons = (nDaemons > CM_MAX_DAEMONS) ? CM_MAX_DAEMONS : nDaemons;
 708
 709     if (osi_Once(&once)) {
 710         lock_InitializeRWLock(&cm_daemonLock, "cm_daemonLock",
 711                                LOCK_HIERARCHY_DAEMON_GLOBAL);
 712         osi_EndOnce(&once);
 713
 714         /* creating IP Address Change monitor daemon */
 715         phandle = thrd_Create((SecurityAttrib) 0, 0,
 716                                (ThreadFunc) cm_IpAddrDaemon, 0, 0, &pid, "cm_IpAddrDaemon");
 717         osi_assertx(phandle != NULL, "cm_IpAddrDaemon thread creation failure");
 718         thrd_CloseHandle(phandle);
 719
 720         /* creating pinging daemon */
 721         phandle = thrd_Create((SecurityAttrib) 0, 0,
 722                                (ThreadFunc) cm_Daemon, 0, 0, &pid, "cm_Daemon");
 723         osi_assertx(phandle != NULL, "cm_Daemon thread creation failure");
 724         thrd_CloseHandle(phandle);
 725
 726         phandle = thrd_Create((SecurityAttrib) 0, 0,
 727                                (ThreadFunc) cm_LockDaemon, 0, 0, &pid, "cm_LockDaemon");
 728         osi_assertx(phandle != NULL, "cm_LockDaemon thread creation failure");
 729         thrd_CloseHandle(phandle);
 730
 731         for(i=0; i < cm_nDaemons; i++) {
 732             phandle = thrd_Create((SecurityAttrib) 0, 0,
 733                                    (ThreadFunc) cm_BkgDaemon, (LPVOID)(LONG_PTR)i, 0, &pid,
 734                                    "cm_BkgDaemon");
 735             osi_assertx(phandle != NULL, "cm_BkgDaemon thread creation failure");
 736             thrd_CloseHandle(phandle);
 737         }
 738     }
 739 }