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  = 60;
  39 long cm_daemonTokenCheckInterval = 180;
  40 long cm_daemonCheckOfflineVolInterval = 600;
  41 long cm_daemonPerformanceTuningInterval = 0;
  42 long cm_daemonRankServerInterval = 600;
  43 long cm_daemonRDRShakeExtentsInterval = 0;
  44
  45 osi_rwlock_t cm_daemonLock;
  46
  47 long cm_bkgQueueCount;          /* # of queued requests */
  48
  49 int cm_bkgWaitingForCount;      /* true if someone's waiting for cm_bkgQueueCount to drop */
  50
  51 cm_bkgRequest_t *cm_bkgListp;           /* first elt in the list of requests */
  52 cm_bkgRequest_t *cm_bkgListEndp;        /* last elt in the list of requests */
  53
  54 extern int powerStateSuspended;
  55 int daemon_ShutdownFlag = 0;
  56 static int cm_nDaemons = 0;
  57 static time_t lastIPAddrChange = 0;
  58
  59 static EVENT_HANDLE cm_Daemon_ShutdownEvent = NULL;
  60 static EVENT_HANDLE cm_LockDaemon_ShutdownEvent = NULL;
  61 static EVENT_HANDLE cm_IPAddrDaemon_ShutdownEvent = NULL;
  62 static EVENT_HANDLE cm_BkgDaemon_ShutdownEvent[CM_MAX_DAEMONS] =
  63        {NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL};
  64
  65 void * cm_IpAddrDaemon(void * vparm)
  66 {
  67     extern void smb_CheckVCs(void);
  68     char * name = "cm_IPAddrDaemon_ShutdownEvent";
  69
  70     cm_IPAddrDaemon_ShutdownEvent = thrd_CreateEvent(NULL, FALSE, FALSE, name);
  71     if ( GetLastError() == ERROR_ALREADY_EXISTS )
  72         afsi_log("Event Object Already Exists: %s", name);
  73
  74     rx_StartClientThread();
  75
  76     while (daemon_ShutdownFlag == 0) {
  77         DWORD Result;
  78
  79         thrd_SetEvent(cm_IPAddrDaemon_ShutdownEvent);
  80         Result = NotifyAddrChange(NULL,NULL);
  81         if (Result == NO_ERROR && daemon_ShutdownFlag == 0) {
  82             lastIPAddrChange = osi_Time();
  83             if (smb_Enabled)
  84                 smb_SetLanAdapterChangeDetected();
  85             cm_SetLanAdapterChangeDetected();
  86             thrd_ResetEvent(cm_IPAddrDaemon_ShutdownEvent);
  87         }
  88     }
  89
  90     thrd_SetEvent(cm_IPAddrDaemon_ShutdownEvent);
  91     pthread_exit(NULL);
  92     return NULL;
  93 }
  94
  95 afs_int32 cm_RequestWillBlock(cm_bkgRequest_t *rp)
  96 {
  97     afs_int32 willBlock = 0;
  98
  99     if (rp->procp == cm_BkgStore) {
 100         /*
 101          * If the datastoring flag is set, it means that another
 102          * thread is already performing an exclusive store operation
 103          * on this file.  The exclusive state will be cleared once
 104          * the file server locks the vnode.  Therefore, at most two
 105          * threads can be actively involved in storing data at a time
 106          * on a file.
 107          */
 108         lock_ObtainRead(&rp->scp->rw);
 109         willBlock = (rp->scp->flags & CM_SCACHEFLAG_DATASTORING);
 110         lock_ReleaseRead(&rp->scp->rw);
 111     }
 112     else if (rp->procp == RDR_BkgFetch || rp->procp == cm_BkgPrefetch) {
 113         /*
 114          * Attempt to determine if there is a conflict on the requested
 115          * range of the file.  If the first in the range does not exist
 116          * in the cache assume there is no conflict.  If the buffer does
 117          * exist, check to see if an I/O operation is in progress
 118          * by using the writing and reading flags as an indicator.
 119          */
 120         osi_hyper_t base;
 121         cm_buf_t *bufp = NULL;
 122
 123         base.LowPart = rp->p1;
 124         base.HighPart = rp->p2;
 125
 126         bufp = buf_Find(&rp->scp->fid, &base);
 127         if (bufp) {
 128             willBlock = (bufp->flags & (CM_BUF_WRITING|CM_BUF_READING));
 129             buf_Release(bufp);
 130         }
 131     }
 132
 133     return willBlock;
 134 }
 135
 136 void * cm_BkgDaemon(void * vparm)
 137 {
 138     cm_bkgRequest_t *rp;
 139     afs_int32 code;
 140     char name[32] = "";
 141     long daemonID = (long)(LONG_PTR)vparm;
 142
 143     snprintf(name, sizeof(name), "cm_BkgDaemon_ShutdownEvent%u", daemonID);
 144
 145     cm_BkgDaemon_ShutdownEvent[daemonID] = thrd_CreateEvent(NULL, FALSE, FALSE, name);
 146     if ( GetLastError() == ERROR_ALREADY_EXISTS )
 147         afsi_log("Event Object Already Exists: %s", name);
 148
 149     rx_StartClientThread();
 150
 151     lock_ObtainWrite(&cm_daemonLock);
 152     while (daemon_ShutdownFlag == 0) {
 153         int willBlock = 0;
 154
 155         if (powerStateSuspended) {
 156             Sleep(1000);
 157             continue;
 158         }
 159         if (!cm_bkgListEndp) {
 160             osi_SleepW((LONG_PTR)&cm_bkgListp, &cm_daemonLock);
 161             lock_ObtainWrite(&cm_daemonLock);
 162             continue;
 163         }
 164
 165         /* we found a request */
 166         for (rp = cm_bkgListEndp; rp; rp = (cm_bkgRequest_t *) osi_QPrev(&rp->q))
 167         {
 168             if (rp->scp->flags & CM_SCACHEFLAG_DELETED)
 169                 break;
 170
 171             /*
 172              * If the request has active I/O such that this worker would
 173              * be forced to block, leave the request in the queue and move
 174              * on to one that might be available for servicing.
 175              */
 176             if (cm_RequestWillBlock(rp)) {
 177                 willBlock++;
 178                 continue;
 179             }
 180
 181             if (cm_ServerAvailable(&rp->scp->fid, rp->userp))
 182                 break;
 183         }
 184
 185         if (rp == NULL) {
 186             /*
 187              * Couldn't find a request that we could process at the
 188              * current time.  If there were requests that would cause
 189              * the worker to block, sleep for 25ms so it can promptly
 190              * respond when it is available.  Otherwise, sleep for 1s.
 191              *
 192              * This polling cycle needs to be replaced with a proper
 193              * producer/consumer dynamic worker pool.
 194              */
 195             lock_ReleaseWrite(&cm_daemonLock);
 196             Sleep(willBlock ? 25 : 1000);
 197             lock_ObtainWrite(&cm_daemonLock);
 198             continue;
 199         }
 200
 201         osi_QRemoveHT((osi_queue_t **) &cm_bkgListp, (osi_queue_t **) &cm_bkgListEndp, &rp->q);
 202         osi_assertx(cm_bkgQueueCount-- > 0, "cm_bkgQueueCount 0");
 203         lock_ReleaseWrite(&cm_daemonLock);
 204
 205         osi_Log1(afsd_logp,"cm_BkgDaemon processing request 0x%p", rp);
 206
 207         if (rp->scp->flags & CM_SCACHEFLAG_DELETED) {
 208             osi_Log1(afsd_logp,"cm_BkgDaemon DELETED scp 0x%x",rp->scp);
 209             code = CM_ERROR_BADFD;
 210         } else {
 211 #ifdef DEBUG_REFCOUNT
 212             osi_Log2(afsd_logp,"cm_BkgDaemon (before) scp 0x%x ref %d",rp->scp, rp->scp->refCount);
 213 #endif
 214             code = (*rp->procp)(rp->scp, rp->p1, rp->p2, rp->p3, rp->p4, rp->userp, &rp->req);
 215 #ifdef DEBUG_REFCOUNT
 216             osi_Log2(afsd_logp,"cm_BkgDaemon (after) scp 0x%x ref %d",rp->scp, rp->scp->refCount);
 217 #endif
 218         }
 219
 220         /*
 221          * Keep the following list synchronized with the
 222          * error code list in cm_BkgStore.
 223          * cm_SyncOpDone(CM_SCACHESYNC_ASYNCSTORE) will be called there unless
 224          * one of these errors has occurred.
 225          */
 226         switch ( code ) {
 227         case CM_ERROR_TIMEDOUT: /* or server restarting */
 228         case CM_ERROR_RETRY:
 229         case CM_ERROR_WOULDBLOCK:
 230         case CM_ERROR_ALLBUSY:
 231         case CM_ERROR_ALLDOWN:
 232         case CM_ERROR_ALLOFFLINE:
 233         case CM_ERROR_PARTIALWRITE:
 234             if (rp->procp == cm_BkgStore ||
 235                 rp->procp == RDR_BkgFetch) {
 236                 osi_Log2(afsd_logp,
 237                          "cm_BkgDaemon re-queueing failed request 0x%p code 0x%x",
 238                          rp, code);
 239                 lock_ObtainWrite(&cm_daemonLock);
 240                 cm_bkgQueueCount++;
 241                 osi_QAddT((osi_queue_t **) &cm_bkgListp, (osi_queue_t **)&cm_bkgListEndp, &rp->q);
 242                 break;
 243             } /* otherwise fall through */
 244         case 0:  /* success */
 245         default: /* other error */
 246             if (code == 0) {
 247                 osi_Log1(afsd_logp,"cm_BkgDaemon SUCCESS: request 0x%p", rp);
 248             } else {
 249                 osi_Log2(afsd_logp,"cm_BkgDaemon FAILED: request dropped 0x%p code 0x%x",
 250                          rp, code);
 251             }
 252             cm_ReleaseUser(rp->userp);
 253             cm_ReleaseSCache(rp->scp);
 254             free(rp);
 255             lock_ObtainWrite(&cm_daemonLock);
 256         }
 257     }
 258     lock_ReleaseWrite(&cm_daemonLock);
 259     thrd_SetEvent(cm_BkgDaemon_ShutdownEvent[daemonID]);
 260     pthread_exit(NULL);
 261     return NULL;
 262 }
 263
 264 void cm_QueueBKGRequest(cm_scache_t *scp, cm_bkgProc_t *procp, afs_uint32 p1, afs_uint32 p2, afs_uint32 p3, afs_uint32 p4,
 265         cm_user_t *userp, cm_req_t *reqp)
 266 {
 267     cm_bkgRequest_t *rp;
 268
 269     rp = malloc(sizeof(*rp));
 270     memset(rp, 0, sizeof(*rp));
 271
 272     cm_HoldSCache(scp);
 273     rp->scp = scp;
 274     cm_HoldUser(userp);
 275     rp->userp = userp;
 276     rp->procp = procp;
 277     rp->p1 = p1;
 278     rp->p2 = p2;
 279     rp->p3 = p3;
 280     rp->p4 = p4;
 281     rp->req = *reqp;
 282
 283     lock_ObtainWrite(&cm_daemonLock);
 284     cm_bkgQueueCount++;
 285     osi_QAdd((osi_queue_t **) &cm_bkgListp, &rp->q);
 286     if (!cm_bkgListEndp)
 287         cm_bkgListEndp = rp;
 288     lock_ReleaseWrite(&cm_daemonLock);
 289
 290     osi_Wakeup((LONG_PTR) &cm_bkgListp);
 291 }
 292
 293 static int
 294 IsWindowsFirewallPresent(void)
 295 {
 296     SC_HANDLE scm;
 297     SC_HANDLE svc;
 298     BOOLEAN flag;
 299     BOOLEAN result = FALSE;
 300     LPQUERY_SERVICE_CONFIG pConfig = NULL;
 301     DWORD BufSize;
 302     LONG status;
 303
 304     /* Open services manager */
 305     scm = OpenSCManager(NULL, NULL, GENERIC_READ);
 306     if (!scm) return FALSE;
 307
 308     /* Open Windows Firewall service */
 309     svc = OpenService(scm, "MpsSvc", SERVICE_QUERY_CONFIG);
 310     if (!svc) {
 311         afsi_log("MpsSvc Service could not be opened for query: 0x%x", GetLastError());
 312         svc = OpenService(scm, "SharedAccess", SERVICE_QUERY_CONFIG);
 313         if (!svc)
 314             afsi_log("SharedAccess Service could not be opened for query: 0x%x", GetLastError());
 315     }
 316     if (!svc)
 317         goto close_scm;
 318
 319     /* Query Windows Firewall service config, first just to get buffer size */
 320     /* Expected to fail, so don't test return value */
 321     (void) QueryServiceConfig(svc, NULL, 0, &BufSize);
 322     status = GetLastError();
 323     if (status != ERROR_INSUFFICIENT_BUFFER)
 324         goto close_svc;
 325
 326     /* Allocate buffer */
 327     pConfig = (LPQUERY_SERVICE_CONFIG)GlobalAlloc(GMEM_FIXED,BufSize);
 328     if (!pConfig)
 329         goto close_svc;
 330
 331     /* Query Windows Firewall service config, this time for real */
 332     flag = QueryServiceConfig(svc, pConfig, BufSize, &BufSize);
 333     if (!flag) {
 334         afsi_log("QueryServiceConfig failed: 0x%x", GetLastError());
 335         goto free_pConfig;
 336     }
 337
 338     /* Is it autostart? */
 339     afsi_log("AutoStart 0x%x", pConfig->dwStartType);
 340     if (pConfig->dwStartType < SERVICE_DEMAND_START)
 341         result = TRUE;
 342
 343   free_pConfig:
 344     GlobalFree(pConfig);
 345   close_svc:
 346     CloseServiceHandle(svc);
 347   close_scm:
 348     CloseServiceHandle(scm);
 349
 350     return result;
 351 }
 352
 353 void
 354 cm_DaemonCheckInit(void)
 355 {
 356     HKEY parmKey;
 357     DWORD dummyLen;
 358     DWORD dummy;
 359     DWORD code;
 360
 361     code = RegOpenKeyEx(HKEY_LOCAL_MACHINE, AFSREG_CLT_SVC_PARAM_SUBKEY,
 362                          0, KEY_QUERY_VALUE, &parmKey);
 363     if (code)
 364         return;
 365
 366     dummyLen = sizeof(DWORD);
 367     code = RegQueryValueEx(parmKey, "daemonCheckDownInterval", NULL, NULL,
 368                             (BYTE *) &dummy, &dummyLen);
 369     if (code == ERROR_SUCCESS && dummy)
 370         cm_daemonCheckDownInterval = dummy;
 371     afsi_log("daemonCheckDownInterval is %d", cm_daemonCheckDownInterval);
 372
 373     dummyLen = sizeof(DWORD);
 374     code = RegQueryValueEx(parmKey, "daemonCheckUpInterval", NULL, NULL,
 375                             (BYTE *) &dummy, &dummyLen);
 376     if (code == ERROR_SUCCESS && dummy)
 377         cm_daemonCheckUpInterval = dummy;
 378     afsi_log("daemonCheckUpInterval is %d", cm_daemonCheckUpInterval);
 379
 380     dummyLen = sizeof(DWORD);
 381     code = RegQueryValueEx(parmKey, "daemonCheckVolInterval", NULL, NULL,
 382                             (BYTE *) &dummy, &dummyLen);
 383     if (code == ERROR_SUCCESS && dummy)
 384         cm_daemonCheckVolInterval = dummy;
 385     afsi_log("daemonCheckVolInterval is %d", cm_daemonCheckVolInterval);
 386
 387     dummyLen = sizeof(DWORD);
 388     code = RegQueryValueEx(parmKey, "daemonCheckCBInterval", NULL, NULL,
 389                             (BYTE *) &dummy, &dummyLen);
 390     if (code == ERROR_SUCCESS && dummy)
 391         cm_daemonCheckCBInterval = dummy;
 392     afsi_log("daemonCheckCBInterval is %d", cm_daemonCheckCBInterval);
 393
 394     dummyLen = sizeof(DWORD);
 395     code = RegQueryValueEx(parmKey, "daemonCheckVolCBInterval", NULL, NULL,
 396                             (BYTE *) &dummy, &dummyLen);
 397     if (code == ERROR_SUCCESS && dummy)
 398         cm_daemonCheckVolCBInterval = dummy;
 399     afsi_log("daemonCheckVolCBInterval is %d", cm_daemonCheckVolCBInterval);
 400
 401     dummyLen = sizeof(DWORD);
 402     code = RegQueryValueEx(parmKey, "daemonCheckLockInterval", NULL, NULL,
 403                             (BYTE *) &dummy, &dummyLen);
 404     if (code == ERROR_SUCCESS && dummy)
 405         cm_daemonCheckLockInterval = dummy;
 406     afsi_log("daemonCheckLockInterval is %d", cm_daemonCheckLockInterval);
 407
 408     dummyLen = sizeof(DWORD);
 409     code = RegQueryValueEx(parmKey, "daemonCheckTokenInterval", NULL, NULL,
 410                             (BYTE *) &dummy, &dummyLen);
 411     if (code == ERROR_SUCCESS && dummy)
 412         cm_daemonTokenCheckInterval = dummy;
 413     afsi_log("daemonCheckTokenInterval is %d", cm_daemonTokenCheckInterval);
 414
 415     dummyLen = sizeof(DWORD);
 416     code = RegQueryValueEx(parmKey, "daemonCheckOfflineVolInterval", NULL, NULL,
 417                             (BYTE *) &dummy, &dummyLen);
 418     if (code == ERROR_SUCCESS && dummy)
 419         cm_daemonCheckOfflineVolInterval = dummy;
 420     afsi_log("daemonCheckOfflineVolInterval is %d", cm_daemonCheckOfflineVolInterval);
 421
 422     dummyLen = sizeof(DWORD);
 423     code = RegQueryValueEx(parmKey, "daemonRDRShakeExtentsInterval", NULL, NULL,
 424                             (BYTE *) &dummy, &dummyLen);
 425     if (code == ERROR_SUCCESS && dummy)
 426         cm_daemonRDRShakeExtentsInterval = dummy;
 427     afsi_log("daemonRDRShakeExtentsInterval is %d", cm_daemonRDRShakeExtentsInterval);
 428
 429     dummyLen = sizeof(DWORD);
 430     code = RegQueryValueEx(parmKey, "daemonPerformanceTuningInterval", NULL, NULL,
 431                             (BYTE *) &dummy, &dummyLen);
 432     if (code == ERROR_SUCCESS)
 433         cm_daemonPerformanceTuningInterval = dummy;
 434     afsi_log("daemonPerformanceTuningInterval is %d", cm_daemonPerformanceTuningInterval);
 435
 436     dummyLen = sizeof(DWORD);
 437     code = RegQueryValueEx(parmKey, "daemonRankServerInterval", NULL, NULL,
 438                             (BYTE *) &dummy, &dummyLen);
 439     if (code == ERROR_SUCCESS && dummy)
 440         cm_daemonRankServerInterval = dummy;
 441     afsi_log("daemonRankServerInterval is %d", cm_daemonRankServerInterval);
 442
 443     RegCloseKey(parmKey);
 444
 445     if (cm_daemonPerformanceTuningInterval)
 446         cm_PerformanceTuningInit();
 447 }
 448
 449 /* periodic lock check daemon */
 450 void * cm_LockDaemon(void * vparm)
 451 {
 452     time_t now;
 453     time_t lastLockCheck;
 454     char * name = "cm_LockDaemon_ShutdownEvent";
 455
 456     cm_LockDaemon_ShutdownEvent = thrd_CreateEvent(NULL, FALSE, FALSE, name);
 457     if ( GetLastError() == ERROR_ALREADY_EXISTS )
 458         afsi_log("Event Object Already Exists: %s", name);
 459
 460     now = osi_Time();
 461     lastLockCheck = now - cm_daemonCheckLockInterval/2 + (rand() % cm_daemonCheckLockInterval);
 462
 463     while (daemon_ShutdownFlag == 0) {
 464         if (powerStateSuspended) {
 465             Sleep(1000);
 466             continue;
 467         }
 468
 469         now = osi_Time();
 470
 471         if (now > lastLockCheck + cm_daemonCheckLockInterval &&
 472             daemon_ShutdownFlag == 0 &&
 473             powerStateSuspended == 0) {
 474             lastLockCheck = now;
 475             cm_CheckLocks();
 476             if (daemon_ShutdownFlag == 1)
 477                 break;
 478         }
 479
 480         thrd_Sleep(1000);               /* sleep 1 second */
 481     }
 482     thrd_SetEvent(cm_LockDaemon_ShutdownEvent);
 483     pthread_exit(NULL);
 484     return NULL;
 485 }
 486
 487 /* periodic check daemon */
 488 void * cm_Daemon(void *vparm)
 489 {
 490     time_t now;
 491     time_t lastVolCheck;
 492     time_t lastCBExpirationCheck;
 493     time_t lastVolCBRenewalCheck;
 494     time_t lastDownServerCheck;
 495     time_t lastUpServerCheck;
 496     time_t lastTokenCacheCheck;
 497     time_t lastBusyVolCheck;
 498     time_t lastPerformanceCheck;
 499     time_t lastServerRankCheck;
 500     time_t lastRDRShakeExtents;
 501     char thostName[200];
 502     unsigned long code;
 503     struct hostent *thp;
 504     HMODULE hHookDll;
 505     char * name = "cm_Daemon_ShutdownEvent";
 506     int configureFirewall = IsWindowsFirewallPresent();
 507     int bAddrChangeCheck = 0;
 508
 509     cm_Daemon_ShutdownEvent = thrd_CreateEvent(NULL, FALSE, FALSE, name);
 510     if ( GetLastError() == ERROR_ALREADY_EXISTS )
 511         afsi_log("Event Object Already Exists: %s", name);
 512
 513     if (!configureFirewall) {
 514         afsi_log("No Windows Firewall detected");
 515     }
 516
 517     if (cm_freelanceEnabled && cm_freelanceImportCellServDB)
 518         cm_FreelanceImportCellServDB();
 519
 520     /* ping all file servers, up or down, with unauthenticated connection,
 521      * to find out whether we have all our callbacks from the server still.
 522      * Also, ping down VLDBs.
 523      */
 524     /*
 525      * Seed the random number generator with our own address, so that
 526      * clients starting at the same time don't all do vol checks at the
 527      * same time.
 528      */
 529     gethostname(thostName, sizeof(thostName));
 530     thp = gethostbyname(thostName);
 531     if (thp == NULL)    /* In djgpp, gethostname returns the netbios
 532                            name of the machine.  gethostbyname will fail
 533                            looking this up if it differs from DNS name. */
 534         code = 0;
 535     else
 536         memcpy(&code, thp->h_addr_list[0], 4);
 537
 538     srand(ntohl(code));
 539
 540     cm_DaemonCheckInit();
 541
 542     now = osi_Time();
 543     lastVolCheck = now - cm_daemonCheckVolInterval/2 + (rand() % cm_daemonCheckVolInterval);
 544     lastCBExpirationCheck = now - cm_daemonCheckCBInterval/2 + (rand() % cm_daemonCheckCBInterval);
 545     if (cm_daemonCheckVolCBInterval)
 546         lastVolCBRenewalCheck = now - cm_daemonCheckVolCBInterval/2 + (rand() % cm_daemonCheckVolCBInterval);
 547     lastDownServerCheck = now - cm_daemonCheckDownInterval/2 + (rand() % cm_daemonCheckDownInterval);
 548     lastUpServerCheck = now - cm_daemonCheckUpInterval/2 + (rand() % cm_daemonCheckUpInterval);
 549     lastTokenCacheCheck = now - cm_daemonTokenCheckInterval/2 + (rand() % cm_daemonTokenCheckInterval);
 550     if (cm_daemonCheckOfflineVolInterval)
 551         lastBusyVolCheck = now - cm_daemonCheckOfflineVolInterval/2 * (rand() % cm_daemonCheckOfflineVolInterval);
 552     if (cm_daemonPerformanceTuningInterval)
 553         lastPerformanceCheck = now - cm_daemonPerformanceTuningInterval/2 * (rand() % cm_daemonPerformanceTuningInterval);
 554     lastServerRankCheck = now - cm_daemonRankServerInterval/2 * (rand() % cm_daemonRankServerInterval);
 555     if (cm_daemonRDRShakeExtentsInterval)
 556         lastRDRShakeExtents = now - cm_daemonRDRShakeExtentsInterval/2 * (rand() % cm_daemonRDRShakeExtentsInterval);
 557
 558     while (daemon_ShutdownFlag == 0) {
 559         if (powerStateSuspended) {
 560             Sleep(1000);
 561             continue;
 562         }
 563         /* check to see if the listener threads halted due to network
 564          * disconnect or other issues.  If so, attempt to restart them.
 565          */
 566         smb_RestartListeners(0);
 567
 568         if (daemon_ShutdownFlag == 1)
 569             break;
 570
 571         if (configureFirewall) {
 572             /* Open Microsoft Firewall to allow in port 7001 */
 573             switch (icf_CheckAndAddAFSPorts(AFS_PORTSET_CLIENT)) {
 574             case 0:
 575                 afsi_log("Windows Firewall Configuration succeeded");
 576                 configureFirewall = 0;
 577                 break;
 578             case 1:
 579                 afsi_log("Invalid Windows Firewall Port Set");
 580                 break;
 581             case 2:
 582                 afsi_log("Unable to open Windows Firewall Profile");
 583                 break;
 584             case 3:
 585                 afsi_log("Unable to create/modify Windows Firewall Port entries");
 586                 break;
 587             default:
 588                 afsi_log("Unknown Windows Firewall Configuration error");
 589             }
 590         }
 591
 592         /* find out what time it is */
 593         now = osi_Time();
 594
 595         /* Determine whether an address change took place that we need to respond to */
 596         if (bAddrChangeCheck)
 597             bAddrChangeCheck = 0;
 598
 599         if (lastIPAddrChange != 0 && lastIPAddrChange + 2500 < now) {
 600             bAddrChangeCheck = 1;
 601             lastIPAddrChange = 0;
 602         }
 603
 604         /* check down servers */
 605         if ((bAddrChangeCheck || now > lastDownServerCheck + cm_daemonCheckDownInterval) &&
 606             daemon_ShutdownFlag == 0 &&
 607             powerStateSuspended == 0) {
 608             lastDownServerCheck = now;
 609             osi_Log0(afsd_logp, "cm_Daemon CheckDownServers");
 610             cm_CheckServers(CM_FLAG_CHECKDOWNSERVERS, NULL);
 611             if (daemon_ShutdownFlag == 1)
 612                 break;
 613             now = osi_Time();
 614         }
 615
 616         if (bAddrChangeCheck &&
 617             daemon_ShutdownFlag == 0 &&
 618             powerStateSuspended == 0) {
 619             cm_ForceNewConnectionsAllServers();
 620         }
 621
 622         /* check up servers */
 623         if ((bAddrChangeCheck || now > lastUpServerCheck + cm_daemonCheckUpInterval) &&
 624             daemon_ShutdownFlag == 0 &&
 625             powerStateSuspended == 0) {
 626             lastUpServerCheck = now;
 627             osi_Log0(afsd_logp, "cm_Daemon CheckUpServers");
 628             cm_CheckServers(CM_FLAG_CHECKUPSERVERS, NULL);
 629             if (daemon_ShutdownFlag == 1)
 630                 break;
 631             now = osi_Time();
 632         }
 633
 634         if (bAddrChangeCheck &&
 635             daemon_ShutdownFlag == 0 &&
 636             powerStateSuspended == 0) {
 637             smb_CheckVCs();
 638             cm_VolStatus_Network_Addr_Change();
 639         }
 640
 641         /*
 642          * Once every five minutes inspect the volume list and enforce
 643          * the volume location expiration time.
 644          */
 645         if (now > lastVolCheck + 300 &&
 646             daemon_ShutdownFlag == 0 &&
 647             powerStateSuspended == 0) {
 648             lastVolCheck = now;
 649             cm_RefreshVolumes(cm_daemonCheckVolInterval);
 650             if (daemon_ShutdownFlag == 1)
 651                 break;
 652             now = osi_Time();
 653         }
 654
 655         /* Rank all up servers */
 656         if ((now > lastServerRankCheck + cm_daemonRankServerInterval) &&
 657             daemon_ShutdownFlag == 0 &&
 658             powerStateSuspended == 0) {
 659             lastServerRankCheck = now;
 660             osi_Log0(afsd_logp, "cm_Daemon RankServer");
 661             cm_RankUpServers();
 662             if(daemon_ShutdownFlag == 1)
 663                 break;
 664             now = osi_Time();
 665         }
 666
 667         if (cm_daemonCheckVolCBInterval &&
 668             now > lastVolCBRenewalCheck + cm_daemonCheckVolCBInterval &&
 669             daemon_ShutdownFlag == 0 &&
 670             powerStateSuspended == 0) {
 671             lastVolCBRenewalCheck = now;
 672             cm_VolumeRenewROCallbacks();
 673             if (daemon_ShutdownFlag == 1)
 674                 break;
 675             now = osi_Time();
 676         }
 677
 678         if ((bAddrChangeCheck || (cm_daemonCheckOfflineVolInterval &&
 679                                   now > lastBusyVolCheck + cm_daemonCheckOfflineVolInterval)) &&
 680             daemon_ShutdownFlag == 0 &&
 681             powerStateSuspended == 0) {
 682             lastBusyVolCheck = now;
 683             cm_CheckOfflineVolumes();
 684             if (daemon_ShutdownFlag == 1)
 685                 break;
 686             now = osi_Time();
 687         }
 688
 689         if (now > lastCBExpirationCheck + cm_daemonCheckCBInterval &&
 690             daemon_ShutdownFlag == 0 &&
 691             powerStateSuspended == 0) {
 692             lastCBExpirationCheck = now;
 693             cm_CheckCBExpiration();
 694             if (daemon_ShutdownFlag == 1)
 695                 break;
 696             now = osi_Time();
 697         }
 698
 699         if (now > lastTokenCacheCheck + cm_daemonTokenCheckInterval &&
 700             daemon_ShutdownFlag == 0 &&
 701             powerStateSuspended == 0) {
 702             lastTokenCacheCheck = now;
 703             cm_CheckTokenCache(now);
 704             if (daemon_ShutdownFlag == 1)
 705                 break;
 706             now = osi_Time();
 707         }
 708
 709         if (cm_daemonRDRShakeExtentsInterval &&
 710             now > lastRDRShakeExtents + cm_daemonRDRShakeExtentsInterval &&
 711             daemon_ShutdownFlag == 0 &&
 712             powerStateSuspended == 0) {
 713             cm_req_t req;
 714             cm_InitReq(&req);
 715             lastRDRShakeExtents = now;
 716             if (cm_data.buf_redirCount > cm_data.buf_freeCount)
 717                 buf_RDRShakeSomeExtentsFree(&req, FALSE, 10 /* seconds */);
 718             if (daemon_ShutdownFlag == 1)
 719                 break;
 720             now = osi_Time();
 721         }
 722
 723         /* allow an exit to be called prior to stopping the service */
 724         hHookDll = cm_LoadAfsdHookLib();
 725         if (hHookDll)
 726         {
 727             BOOL hookRc = TRUE;
 728             AfsdDaemonHook daemonHook = ( AfsdDaemonHook ) GetProcAddress(hHookDll, AFSD_DAEMON_HOOK);
 729             if (daemonHook)
 730             {
 731                 hookRc = daemonHook();
 732             }
 733             FreeLibrary(hHookDll);
 734             hHookDll = NULL;
 735
 736             if (hookRc == FALSE)
 737             {
 738                 SetEvent(WaitToTerminate);
 739             }
 740
 741             if (daemon_ShutdownFlag == 1) {
 742                 break;
 743             }
 744             now = osi_Time();
 745         }
 746
 747         if (cm_daemonPerformanceTuningInterval &&
 748             now > lastPerformanceCheck + cm_daemonPerformanceTuningInterval &&
 749             daemon_ShutdownFlag == 0 &&
 750             powerStateSuspended == 0) {
 751             lastPerformanceCheck = now;
 752             cm_PerformanceTuningCheck();
 753             if (daemon_ShutdownFlag == 1)
 754                 break;
 755             now = osi_Time();
 756         }
 757
 758         /*
 759          * sleep .5 seconds.  if the thread blocks for a long time
 760          * we risk not being able to close the cache before Windows
 761          * kills our process during system shutdown.
 762          */
 763         thrd_Sleep(500);
 764     }
 765
 766     thrd_SetEvent(cm_Daemon_ShutdownEvent);
 767     pthread_exit(NULL);
 768     return NULL;
 769 }
 770
 771 void cm_DaemonShutdown(void)
 772 {
 773     int i;
 774     DWORD code;
 775
 776     daemon_ShutdownFlag = 1;
 777     osi_Wakeup((LONG_PTR) &cm_bkgListp);
 778
 779     /* wait for shutdown */
 780     for ( i=0; i<cm_nDaemons; i++) {
 781         if (cm_BkgDaemon_ShutdownEvent[i])
 782             code = thrd_WaitForSingleObject_Event(cm_BkgDaemon_ShutdownEvent[i], INFINITE);
 783     }
 784
 785     if (cm_Daemon_ShutdownEvent)
 786         code = thrd_WaitForSingleObject_Event(cm_Daemon_ShutdownEvent, INFINITE);
 787
 788     if (cm_LockDaemon_ShutdownEvent)
 789         code = thrd_WaitForSingleObject_Event(cm_LockDaemon_ShutdownEvent, INFINITE);
 790
 791 #if 0
 792     /*
 793      * Do not waste precious time waiting for the ipaddr daemon to shutdown.
 794      * When it does it means we have lost our network connection and we need
 795      * it during cache shutdown in order to notify the file servers that this
 796      * client is giving up all callbacks.
 797      */
 798     if (cm_IPAddrDaemon_ShutdownEvent)
 799         code = thrd_WaitForSingleObject_Event(cm_IPAddrDaemon_ShutdownEvent, INFINITE);
 800 #endif
 801 }
 802
 803 void cm_InitDaemon(int nDaemons)
 804 {
 805     static osi_once_t once;
 806     pthread_t phandle;
 807     pthread_attr_t tattr;
 808     int pstatus;
 809     int i;
 810
 811     pthread_attr_init(&tattr);
 812     pthread_attr_setdetachstate(&tattr, PTHREAD_CREATE_DETACHED);
 813
 814     cm_nDaemons = (nDaemons > CM_MAX_DAEMONS) ? CM_MAX_DAEMONS : nDaemons;
 815
 816     if (osi_Once(&once)) {
 817         lock_InitializeRWLock(&cm_daemonLock, "cm_daemonLock",
 818                                LOCK_HIERARCHY_DAEMON_GLOBAL);
 819         osi_EndOnce(&once);
 820
 821         /* creating IP Address Change monitor daemon */
 822         pstatus = pthread_create(&phandle, &tattr, cm_IpAddrDaemon, 0);
 823         osi_assertx(pstatus == 0, "cm_IpAddrDaemon thread creation failure");
 824
 825         /* creating pinging daemon */
 826         pstatus = pthread_create(&phandle, &tattr, cm_Daemon, 0);
 827         osi_assertx(pstatus == 0, "cm_Daemon thread creation failure");
 828
 829         pstatus = pthread_create(&phandle, &tattr, cm_LockDaemon, 0);
 830         osi_assertx(pstatus == 0, "cm_LockDaemon thread creation failure");
 831
 832         for(i=0; i < cm_nDaemons; i++) {
 833             pstatus = pthread_create(&phandle, &tattr, cm_BkgDaemon, (LPVOID)(LONG_PTR)i);
 834             osi_assertx(pstatus == 0, "cm_BkgDaemon thread creation failure");
 835         }
 836     }
 837
 838     pthread_attr_destroy(&tattr);
 839 }