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