DEVEL15-windows-shutdown-20090628
[openafs.git] / src / WINNT / afsd / cm_daemon.c
index 5a0106d..63e5c89 100644 (file)
 #include <afs/param.h>
 #include <afs/stds.h>
 
-#ifndef DJGPP
 #include <windows.h>
 #include <winsock2.h>
-#else
-#include <netdb.h>
-#endif /* !DJGPP */
+#include <iphlpapi.h>
 #include <stdlib.h>
 #include <malloc.h>
 #include <string.h>
 
+#include "afsd.h"
+
 #include <rx/rx.h>
+#include <rx/rx_prototypes.h>
+#include <WINNT/afsreg.h>
 
-#include "afsd.h"
+#include "afsicf.h"
 
-long cm_daemonCheckInterval = 30;
+/* in seconds */
+long cm_daemonCheckDownInterval  = 180;
+long cm_daemonCheckUpInterval    = 240;
+long cm_daemonCheckVolInterval   = 3600;
+long cm_daemonCheckCBInterval    = 60;
+long cm_daemonCheckVolCBInterval = 0;
+long cm_daemonCheckLockInterval  = 60;
 long cm_daemonTokenCheckInterval = 180;
+long cm_daemonCheckOfflineVolInterval = 600;
+long cm_daemonPerformanceTuningInterval = 0;
 
 osi_rwlock_t cm_daemonLock;
 
@@ -36,39 +45,133 @@ int cm_bkgWaitingForCount; /* true if someone's waiting for cm_bkgQueueCount to
 cm_bkgRequest_t *cm_bkgListp;          /* first elt in the list of requests */
 cm_bkgRequest_t *cm_bkgListEndp;       /* last elt in the list of requests */
 
-static int daemon_ShutdownFlag = 0;
+int daemon_ShutdownFlag = 0;
+static int cm_nDaemons = 0;
+static time_t lastIPAddrChange = 0;
 
-void cm_BkgDaemon(long parm)
+static EVENT_HANDLE cm_Daemon_ShutdownEvent = NULL;
+static EVENT_HANDLE cm_IPAddrDaemon_ShutdownEvent = NULL;
+static EVENT_HANDLE cm_BkgDaemon_ShutdownEvent[CM_MAX_DAEMONS] = 
+       {NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL};
+
+void cm_IpAddrDaemon(long parm)
+{
+    extern void smb_CheckVCs(void);
+    char * name = "cm_IPAddrDaemon_ShutdownEvent";
+
+    cm_IPAddrDaemon_ShutdownEvent = thrd_CreateEvent(NULL, FALSE, FALSE, name);
+    if ( GetLastError() == ERROR_ALREADY_EXISTS )
+        afsi_log("Event Object Already Exists: %s", name);
+
+    rx_StartClientThread();
+
+    while (daemon_ShutdownFlag == 0) {
+       DWORD Result;
+        
+        thrd_SetEvent(cm_IPAddrDaemon_ShutdownEvent);
+        Result = NotifyAddrChange(NULL,NULL);
+        if (Result == NO_ERROR && daemon_ShutdownFlag == 0) {
+            lastIPAddrChange = osi_Time();
+            smb_SetLanAdapterChangeDetected();
+            cm_SetLanAdapterChangeDetected();
+            thrd_ResetEvent(cm_IPAddrDaemon_ShutdownEvent);
+       }       
+    }
+
+    thrd_SetEvent(cm_IPAddrDaemon_ShutdownEvent);
+}
+
+void cm_BkgDaemon(void * parm)
 {
     cm_bkgRequest_t *rp;
+    afs_int32 code;
+    char name[32] = "";
+    long daemonID = (long)parm;
+
+    snprintf(name, sizeof(name), "cm_BkgDaemon_ShutdownEvent%d", daemonID);
+
+    cm_BkgDaemon_ShutdownEvent[daemonID] = thrd_CreateEvent(NULL, FALSE, FALSE, name);
+    if ( GetLastError() == ERROR_ALREADY_EXISTS )
+        afsi_log("Event Object Already Exists: %s", name);
+
+    rx_StartClientThread();
 
     lock_ObtainWrite(&cm_daemonLock);
     while (daemon_ShutdownFlag == 0) {
         if (!cm_bkgListEndp) {
-            osi_SleepW((long) &cm_bkgListp, &cm_daemonLock);
+            osi_SleepW((LONG_PTR)&cm_bkgListp, &cm_daemonLock);
             lock_ObtainWrite(&cm_daemonLock);
             continue;
         }
                 
         /* we found a request */
-        rp = cm_bkgListEndp;
-        cm_bkgListEndp = (cm_bkgRequest_t *) osi_QPrev(&rp->q);
-        osi_QRemove((osi_queue_t **) &cm_bkgListp, &rp->q);
-        osi_assert(cm_bkgQueueCount-- > 0);
+        for (rp = cm_bkgListEndp; rp; rp = (cm_bkgRequest_t *) osi_QPrev(&rp->q))
+       {
+           if (cm_ServerAvailable(&rp->scp->fid, rp->userp) && 
+                !(rp->scp->flags & CM_SCACHEFLAG_DATASTORING))
+               break;
+       }
+       if (rp == NULL) {
+           /* we couldn't find a request that we could process at the current time */
+           lock_ReleaseWrite(&cm_daemonLock);
+           Sleep(1000);
+           lock_ObtainWrite(&cm_daemonLock);
+           continue;
+       }
+
+        osi_QRemoveHT((osi_queue_t **) &cm_bkgListp, (osi_queue_t **) &cm_bkgListEndp, &rp->q);
+        osi_assertx(cm_bkgQueueCount-- > 0, "cm_bkgQueueCount 0");
         lock_ReleaseWrite(&cm_daemonLock);
 
-        (*rp->procp)(rp->scp, rp->p1, rp->p2, rp->p3, rp->p4, rp->userp);
-                
-        cm_ReleaseUser(rp->userp);
-        cm_ReleaseSCache(rp->scp);
-        free(rp);
+       osi_Log1(afsd_logp,"cm_BkgDaemon processing request 0x%p", rp);
+
+#ifdef DEBUG_REFCOUNT
+       osi_Log2(afsd_logp,"cm_BkgDaemon (before) scp 0x%x ref %d",rp->scp, rp->scp->refCount);
+#endif
+        code = (*rp->procp)(rp->scp, rp->p1, rp->p2, rp->p3, rp->p4, rp->userp);
+#ifdef DEBUG_REFCOUNT                
+       osi_Log2(afsd_logp,"cm_BkgDaemon (after) scp 0x%x ref %d",rp->scp, rp->scp->refCount);
+#endif
 
-        lock_ObtainWrite(&cm_daemonLock);
+        /* 
+         * Keep the following list synchronized with the
+         * error code list in cm_BkgStore.  
+         * cm_SyncOpDone(CM_SCACHESYNC_ASYNCSTORE) will be called there unless
+         * one of these errors has occurred.
+         */
+       switch ( code ) {
+       case CM_ERROR_TIMEDOUT: /* or server restarting */
+       case CM_ERROR_RETRY:
+       case CM_ERROR_WOULDBLOCK:
+       case CM_ERROR_ALLBUSY:
+       case CM_ERROR_ALLDOWN:
+       case CM_ERROR_ALLOFFLINE:
+       case CM_ERROR_PARTIALWRITE:
+           osi_Log2(afsd_logp,"cm_BkgDaemon re-queueing failed request 0x%p code 0x%x",
+                    rp, code);
+            lock_ObtainWrite(&cm_daemonLock);
+           cm_bkgQueueCount++;
+           osi_QAddT((osi_queue_t **) &cm_bkgListp, (osi_queue_t **)&cm_bkgListEndp, &rp->q);
+           break;
+       case 0:  /* success */
+       default: /* other error */
+           if (code == 0)
+                osi_Log1(afsd_logp,"cm_BkgDaemon SUCCESS: request 0x%p", rp);
+            else
+                osi_Log2(afsd_logp,"cm_BkgDaemon FAILED: request dropped 0x%p code 0x%x",
+                    rp, code);
+           cm_ReleaseUser(rp->userp);
+           cm_ReleaseSCache(rp->scp);
+           free(rp);
+            lock_ObtainWrite(&cm_daemonLock);
+       }
     }
     lock_ReleaseWrite(&cm_daemonLock);
+
+    thrd_SetEvent(cm_BkgDaemon_ShutdownEvent[daemonID]);
 }
 
-void cm_QueueBKGRequest(cm_scache_t *scp, cm_bkgProc_t *procp, long p1, long p2, long p3, long p4,
+void cm_QueueBKGRequest(cm_scache_t *scp, cm_bkgProc_t *procp, afs_uint32 p1, afs_uint32 p2, afs_uint32 p3, afs_uint32 p4,
        cm_user_t *userp)
 {
     cm_bkgRequest_t *rp;
@@ -93,22 +196,179 @@ void cm_QueueBKGRequest(cm_scache_t *scp, cm_bkgProc_t *procp, long p1, long p2,
         cm_bkgListEndp = rp;
     lock_ReleaseWrite(&cm_daemonLock);
 
-    osi_Wakeup((long) &cm_bkgListp);
+    osi_Wakeup((LONG_PTR) &cm_bkgListp);
+}
+
+static int
+IsWindowsFirewallPresent(void)
+{
+    SC_HANDLE scm;
+    SC_HANDLE svc;
+    BOOLEAN flag;
+    BOOLEAN result = FALSE;
+    LPQUERY_SERVICE_CONFIG pConfig = NULL;
+    DWORD BufSize;
+    LONG status;
+
+    /* Open services manager */
+    scm = OpenSCManager(NULL, NULL, GENERIC_READ);
+    if (!scm) return FALSE;
+
+    /* Open Windows Firewall service */
+    svc = OpenService(scm, "MpsSvc", SERVICE_QUERY_CONFIG);
+    if (!svc) {
+       afsi_log("MpsSvc Service could not be opened for query: 0x%x", GetLastError());
+       svc = OpenService(scm, "SharedAccess", SERVICE_QUERY_CONFIG);
+       if (!svc)
+           afsi_log("SharedAccess Service could not be opened for query: 0x%x", GetLastError());
+    }
+    if (!svc)
+        goto close_scm;
+
+    /* Query Windows Firewall service config, first just to get buffer size */
+    /* Expected to fail, so don't test return value */
+    (void) QueryServiceConfig(svc, NULL, 0, &BufSize);
+    status = GetLastError();
+    if (status != ERROR_INSUFFICIENT_BUFFER)
+        goto close_svc;
+
+    /* Allocate buffer */
+    pConfig = (LPQUERY_SERVICE_CONFIG)GlobalAlloc(GMEM_FIXED,BufSize);
+    if (!pConfig)
+        goto close_svc;
+
+    /* Query Windows Firewall service config, this time for real */
+    flag = QueryServiceConfig(svc, pConfig, BufSize, &BufSize);
+    if (!flag) {
+       afsi_log("QueryServiceConfig failed: 0x%x", GetLastError());
+        goto free_pConfig;
+    }
+
+    /* Is it autostart? */
+    afsi_log("AutoStart 0x%x", pConfig->dwStartType);
+    if (pConfig->dwStartType < SERVICE_DEMAND_START)
+        result = TRUE;
+
+  free_pConfig:
+    GlobalFree(pConfig);
+  close_svc:
+    CloseServiceHandle(svc);
+  close_scm:
+    CloseServiceHandle(scm);
+
+    return result;
+}
+
+void
+cm_DaemonCheckInit(void)
+{
+    HKEY parmKey;
+    DWORD dummyLen;
+    DWORD dummy;
+    DWORD code;
+
+    code = RegOpenKeyEx(HKEY_LOCAL_MACHINE, AFSREG_CLT_SVC_PARAM_SUBKEY,
+                         0, KEY_QUERY_VALUE, &parmKey);
+    if (code)
+       return;
+
+    dummyLen = sizeof(DWORD);
+    code = RegQueryValueEx(parmKey, "daemonCheckDownInterval", NULL, NULL,
+                           (BYTE *) &dummy, &dummyLen);
+    if (code == ERROR_SUCCESS && dummy)
+       cm_daemonCheckDownInterval = dummy;
+    afsi_log("daemonCheckDownInterval is %d", cm_daemonCheckDownInterval);
+
+    dummyLen = sizeof(DWORD);
+    code = RegQueryValueEx(parmKey, "daemonCheckUpInterval", NULL, NULL,
+                           (BYTE *) &dummy, &dummyLen);
+    if (code == ERROR_SUCCESS && dummy)
+       cm_daemonCheckUpInterval = dummy;
+    afsi_log("daemonCheckUpInterval is %d", cm_daemonCheckUpInterval);
+
+    dummyLen = sizeof(DWORD);
+    code = RegQueryValueEx(parmKey, "daemonCheckVolInterval", NULL, NULL,
+                           (BYTE *) &dummy, &dummyLen);
+    if (code == ERROR_SUCCESS && dummy)
+       cm_daemonCheckVolInterval = dummy;
+    afsi_log("daemonCheckVolInterval is %d", cm_daemonCheckVolInterval);
+
+    dummyLen = sizeof(DWORD);
+    code = RegQueryValueEx(parmKey, "daemonCheckCBInterval", NULL, NULL,
+                           (BYTE *) &dummy, &dummyLen);
+    if (code == ERROR_SUCCESS && dummy)
+       cm_daemonCheckCBInterval = dummy;
+    afsi_log("daemonCheckCBInterval is %d", cm_daemonCheckCBInterval);
+
+    dummyLen = sizeof(DWORD);
+    code = RegQueryValueEx(parmKey, "daemonCheckVolCBInterval", NULL, NULL,
+                           (BYTE *) &dummy, &dummyLen);
+    if (code == ERROR_SUCCESS && dummy)
+       cm_daemonCheckVolCBInterval = dummy;
+    afsi_log("daemonCheckVolCBInterval is %d", cm_daemonCheckVolCBInterval);
+
+    dummyLen = sizeof(DWORD);
+    code = RegQueryValueEx(parmKey, "daemonCheckLockInterval", NULL, NULL,
+                           (BYTE *) &dummy, &dummyLen);
+    if (code == ERROR_SUCCESS && dummy)
+       cm_daemonCheckLockInterval = dummy;
+    afsi_log("daemonCheckLockInterval is %d", cm_daemonCheckLockInterval);
+
+    dummyLen = sizeof(DWORD);
+    code = RegQueryValueEx(parmKey, "daemonCheckTokenInterval", NULL, NULL,
+                           (BYTE *) &dummy, &dummyLen);
+    if (code == ERROR_SUCCESS && dummy)
+       cm_daemonTokenCheckInterval = dummy;
+    afsi_log("daemonCheckTokenInterval is %d", cm_daemonTokenCheckInterval);
+
+    dummyLen = sizeof(DWORD);
+    code = RegQueryValueEx(parmKey, "daemonCheckOfflineVolInterval", NULL, NULL,
+                           (BYTE *) &dummy, &dummyLen);
+    if (code == ERROR_SUCCESS && dummy)
+       cm_daemonCheckOfflineVolInterval = dummy;
+    afsi_log("daemonCheckOfflineVolInterval is %d", cm_daemonCheckOfflineVolInterval);
+    
+    dummyLen = sizeof(DWORD);
+    code = RegQueryValueEx(parmKey, "daemonPerformanceTuningInterval", NULL, NULL,
+                           (BYTE *) &dummy, &dummyLen);
+    if (code == ERROR_SUCCESS)
+       cm_daemonPerformanceTuningInterval = dummy;
+    afsi_log("daemonPerformanceTuningInterval is %d", cm_daemonPerformanceTuningInterval);
+    
+    RegCloseKey(parmKey);
+
+    if (cm_daemonPerformanceTuningInterval)
+        cm_PerformanceTuningInit();
 }
 
 /* periodic check daemon */
 void cm_Daemon(long parm)
 {
-    unsigned long now;
-    unsigned long lastLockCheck;
-    unsigned long lastVolCheck;
-    unsigned long lastCBExpirationCheck;
-    unsigned long lastDownServerCheck;
-    unsigned long lastUpServerCheck;
-    unsigned long lastTokenCacheCheck;
+    time_t now;
+    time_t lastLockCheck;
+    time_t lastVolCheck;
+    time_t lastCBExpirationCheck;
+    time_t lastVolCBRenewalCheck;
+    time_t lastDownServerCheck;
+    time_t lastUpServerCheck;
+    time_t lastTokenCacheCheck;
+    time_t lastBusyVolCheck;
+    time_t lastPerformanceCheck;
     char thostName[200];
     unsigned long code;
     struct hostent *thp;
+    HMODULE hHookDll;
+    char * name = "cm_Daemon_ShutdownEvent";
+    int configureFirewall = IsWindowsFirewallPresent();
+    int bAddrChangeCheck = 0;
+
+    cm_Daemon_ShutdownEvent = thrd_CreateEvent(NULL, FALSE, FALSE, name);
+    if ( GetLastError() == ERROR_ALREADY_EXISTS )
+        afsi_log("Event Object Already Exists: %s", name);
+
+    if (!configureFirewall) {
+       afsi_log("No Windows Firewall detected");
+    }
 
     /* ping all file servers, up or down, with unauthenticated connection,
      * to find out whether we have all our callbacks from the server still.
@@ -127,61 +387,208 @@ void cm_Daemon(long parm)
         code = 0;
     else
         memcpy(&code, thp->h_addr_list[0], 4);
+    
     srand(ntohl(code));
 
+    cm_DaemonCheckInit();
+
     now = osi_Time();
-    lastVolCheck = now - 1800 + (rand() % 3600);
-    lastCBExpirationCheck = now - 60 + (rand() % 60);
-    lastLockCheck = now - 60 + (rand() % 60);
-    lastDownServerCheck = now - cm_daemonCheckInterval/2 + (rand() % cm_daemonCheckInterval);
-    lastUpServerCheck = now - 1800 + (rand() % 3600);
+    lastVolCheck = now - cm_daemonCheckVolInterval/2 + (rand() % cm_daemonCheckVolInterval);
+    lastCBExpirationCheck = now - cm_daemonCheckCBInterval/2 + (rand() % cm_daemonCheckCBInterval);
+    if (cm_daemonCheckVolCBInterval)
+        lastVolCBRenewalCheck = now - cm_daemonCheckVolCBInterval/2 + (rand() % cm_daemonCheckVolCBInterval);
+    lastLockCheck = now - cm_daemonCheckLockInterval/2 + (rand() % cm_daemonCheckLockInterval);
+    lastDownServerCheck = now - cm_daemonCheckDownInterval/2 + (rand() % cm_daemonCheckDownInterval);
+    lastUpServerCheck = now - cm_daemonCheckUpInterval/2 + (rand() % cm_daemonCheckUpInterval);
     lastTokenCacheCheck = now - cm_daemonTokenCheckInterval/2 + (rand() % cm_daemonTokenCheckInterval);
+    lastBusyVolCheck = now - cm_daemonCheckOfflineVolInterval/2 * (rand() % cm_daemonCheckOfflineVolInterval);
+    if (cm_daemonPerformanceTuningInterval)
+        lastPerformanceCheck = now - cm_daemonPerformanceTuningInterval/2 * (rand() % cm_daemonPerformanceTuningInterval);
 
     while (daemon_ShutdownFlag == 0) {
-        thrd_Sleep(30 * 1000);         /* sleep 30 seconds */
+       /* check to see if the listener threads halted due to network 
+        * disconnect or other issues.  If so, attempt to restart them.
+        */
+       smb_RestartListeners(0);
+
         if (daemon_ShutdownFlag == 1)
-            return;
+            break;
+
+        if (configureFirewall) {
+           /* Open Microsoft Firewall to allow in port 7001 */
+           switch (icf_CheckAndAddAFSPorts(AFS_PORTSET_CLIENT)) {
+           case 0:
+               afsi_log("Windows Firewall Configuration succeeded");
+               configureFirewall = 0;
+               break;
+           case 1:
+               afsi_log("Invalid Windows Firewall Port Set");
+               break;
+           case 2:
+               afsi_log("Unable to open Windows Firewall Profile");
+               break;
+           case 3:
+               afsi_log("Unable to create/modify Windows Firewall Port entries");
+               break;
+           default:
+               afsi_log("Unknown Windows Firewall Configuration error");
+           }
+       } 
 
         /* find out what time it is */
         now = osi_Time();
+        
+        /* Determine whether an address change took place that we need to respond to */
+        if (bAddrChangeCheck)
+            bAddrChangeCheck = 0;
+
+        if (lastIPAddrChange != 0 && lastIPAddrChange + 2500 < now) {
+            bAddrChangeCheck = 1;
+            lastIPAddrChange = 0;
+        }
 
         /* check down servers */
-        if (now > lastDownServerCheck + cm_daemonCheckInterval) {
+        if ((bAddrChangeCheck || now > lastDownServerCheck + cm_daemonCheckDownInterval) &&
+            daemon_ShutdownFlag == 0) {
             lastDownServerCheck = now;
+           osi_Log0(afsd_logp, "cm_Daemon CheckDownServers");
             cm_CheckServers(CM_FLAG_CHECKDOWNSERVERS, NULL);
+            if (daemon_ShutdownFlag == 1)
+                break;
+           now = osi_Time();
         }
 
+        if (bAddrChangeCheck)
+            cm_ForceNewConnectionsAllServers();
+
         /* check up servers */
-        if (now > lastUpServerCheck + 3600) {
+        if ((bAddrChangeCheck || now > lastUpServerCheck + cm_daemonCheckUpInterval) &&
+            daemon_ShutdownFlag == 0) {
             lastUpServerCheck = now;
+           osi_Log0(afsd_logp, "cm_Daemon CheckUpServers");
             cm_CheckServers(CM_FLAG_CHECKUPSERVERS, NULL);
+            if (daemon_ShutdownFlag == 1)
+                break;
+           now = osi_Time();
         }
 
-        if (now > lastVolCheck + 3600) {
+        if (bAddrChangeCheck) {
+            smb_CheckVCs();
+            cm_VolStatus_Network_Addr_Change();
+        }
+
+        if (now > lastVolCheck + cm_daemonCheckVolInterval &&
+            daemon_ShutdownFlag == 0) {
             lastVolCheck = now;
-            cm_CheckVolumes();
+            cm_RefreshVolumes();
+            if (daemon_ShutdownFlag == 1)
+                break;
+           now = osi_Time();
         }
 
-        if (now > lastCBExpirationCheck + 60) {
+        if (cm_daemonCheckVolCBInterval && 
+            now > lastVolCBRenewalCheck + cm_daemonCheckVolCBInterval &&
+            daemon_ShutdownFlag == 0) {
+            lastVolCBRenewalCheck = now;
+            cm_VolumeRenewROCallbacks();
+            if (daemon_ShutdownFlag == 1)
+                break;
+            now = osi_Time();
+        }
+
+        if ((bAddrChangeCheck || now > lastBusyVolCheck + cm_daemonCheckOfflineVolInterval) &&
+            daemon_ShutdownFlag == 0) {
+            lastVolCheck = now;
+            cm_CheckOfflineVolumes();
+            if (daemon_ShutdownFlag == 1)
+                break;
+           now = osi_Time();
+        }
+
+        if (now > lastCBExpirationCheck + cm_daemonCheckCBInterval &&
+            daemon_ShutdownFlag == 0) {
             lastCBExpirationCheck = now;
             cm_CheckCBExpiration();
+            if (daemon_ShutdownFlag == 1)
+                break;
+           now = osi_Time();
         }
 
-        if (now > lastLockCheck + 60) {
+        if (now > lastLockCheck + cm_daemonCheckLockInterval &&
+            daemon_ShutdownFlag == 0) {
             lastLockCheck = now;
             cm_CheckLocks();
+            if (daemon_ShutdownFlag == 1)
+                break;
+           now = osi_Time();
         }
 
-        if (now > lastTokenCacheCheck + cm_daemonTokenCheckInterval) {
+        if (now > lastTokenCacheCheck + cm_daemonTokenCheckInterval &&
+            daemon_ShutdownFlag == 0) {
             lastTokenCacheCheck = now;
             cm_CheckTokenCache(now);
+            if (daemon_ShutdownFlag == 1)
+                break;
+           now = osi_Time();
+        }
+
+        /* allow an exit to be called prior to stopping the service */
+        hHookDll = cm_LoadAfsdHookLib();
+        if (hHookDll)
+        {
+            BOOL hookRc = TRUE;
+            AfsdDaemonHook daemonHook = ( AfsdDaemonHook ) GetProcAddress(hHookDll, AFSD_DAEMON_HOOK);
+            if (daemonHook)
+            {
+                hookRc = daemonHook();
+            }
+            FreeLibrary(hHookDll);
+            hHookDll = NULL;
+
+            if (hookRc == FALSE)
+            {
+                SetEvent(WaitToTerminate);
+            }
+        }
+
+        if (daemon_ShutdownFlag == 1) {
+            break;
+        }
+
+        if (cm_daemonPerformanceTuningInterval &&
+            now > lastPerformanceCheck + cm_daemonPerformanceTuningInterval &&
+             daemon_ShutdownFlag == 0) {
+            lastPerformanceCheck = now;
+            cm_PerformanceTuningCheck();
+            if (daemon_ShutdownFlag == 1)
+                break;
+           now = osi_Time();
         }
+        
+        thrd_Sleep(10000);             /* sleep 10 seconds */
     }
+    thrd_SetEvent(cm_Daemon_ShutdownEvent);
 }       
 
 void cm_DaemonShutdown(void)
 {
+    int i;
+    DWORD code;
+
     daemon_ShutdownFlag = 1;
+    osi_Wakeup((LONG_PTR) &cm_bkgListp);
+
+    /* wait for shutdown */
+    if (cm_Daemon_ShutdownEvent)
+        code = thrd_WaitForSingleObject_Event(cm_Daemon_ShutdownEvent, INFINITE); 
+
+    for ( i=0; i<cm_nDaemons; i++) {
+        if (cm_BkgDaemon_ShutdownEvent[i])
+            code = thrd_WaitForSingleObject_Event(cm_BkgDaemon_ShutdownEvent[i], INFINITE);
+    }
+
+    if (cm_IPAddrDaemon_ShutdownEvent)
+        code = thrd_WaitForSingleObject_Event(cm_IPAddrDaemon_ShutdownEvent, INFINITE);
 }
 
 void cm_InitDaemon(int nDaemons)
@@ -190,22 +597,31 @@ void cm_InitDaemon(int nDaemons)
     long pid;
     thread_t phandle;
     int i;
-        
+
+    cm_nDaemons = (nDaemons > CM_MAX_DAEMONS) ? CM_MAX_DAEMONS : nDaemons;
+    
     if (osi_Once(&once)) {
-        lock_InitializeRWLock(&cm_daemonLock, "cm_daemonLock");
+        lock_InitializeRWLock(&cm_daemonLock, "cm_daemonLock", 
+                               LOCK_HIERARCHY_DAEMON_GLOBAL);
         osi_EndOnce(&once);
-                
+
+       /* creating IP Address Change monitor daemon */
+        phandle = thrd_Create((SecurityAttrib) 0, 0,
+                               (ThreadFunc) cm_IpAddrDaemon, 0, 0, &pid, "cm_IpAddrDaemon");
+        osi_assertx(phandle != NULL, "cm_IpAddrDaemon thread creation failure");
+        thrd_CloseHandle(phandle);
+
         /* creating pinging daemon */
         phandle = thrd_Create((SecurityAttrib) 0, 0,
                                (ThreadFunc) cm_Daemon, 0, 0, &pid, "cm_Daemon");
-        osi_assert(phandle != NULL);
-
+        osi_assertx(phandle != NULL, "cm_Daemon thread creation failure");
         thrd_CloseHandle(phandle);
-        for(i=0; i < nDaemons; i++) {
+
+       for(i=0; i < cm_nDaemons; i++) {
             phandle = thrd_Create((SecurityAttrib) 0, 0,
-                                   (ThreadFunc) cm_BkgDaemon, 0, 0, &pid,
+                                   (ThreadFunc) cm_BkgDaemon, (LPVOID)i, 0, &pid,
                                    "cm_BkgDaemon");
-            osi_assert(phandle != NULL);
+            osi_assertx(phandle != NULL, "cm_BkgDaemon thread creation failure");
             thrd_CloseHandle(phandle);
         }
     }