windows-do-not-discard-badtickets-20080218
[openafs.git] / src / WINNT / afsd / cm_conn.c
index 485fa74..87e3db4 100644 (file)
 #include <afs/param.h>
 #include <afs/stds.h>
 
-#ifndef DJGPP
 #include <windows.h>
-#endif /* !DJGPP */
 #include <string.h>
 #include <malloc.h>
 #include <osi.h>
+#include "afsd.h"
 #include <rx/rx.h>
-#ifndef DJGPP
-#include <rx/rxkad.h>
-#else
 #include <rx/rxkad.h>
-#endif
-
-#include "afsd.h"
+#include <afs/unified_afs.h>
+#include <WINNT/afsreg.h>
 
 osi_rwlock_t cm_connLock;
 
-long RDRtimeout = CM_CONN_DEFAULTRDRTIMEOUT;
-long ConnDeadtimeout = CM_CONN_CONNDEADTIME;
-long HardDeadtimeout = CM_CONN_HARDDEADTIME;
+DWORD RDRtimeout = CM_CONN_DEFAULTRDRTIMEOUT;
+unsigned short ConnDeadtimeout = CM_CONN_CONNDEADTIME;
+unsigned short HardDeadtimeout = CM_CONN_HARDDEADTIME;
 
 #define LANMAN_WKS_PARAM_KEY "SYSTEM\\CurrentControlSet\\Services\\lanmanworkstation\\parameters"
 #define LANMAN_WKS_SESSION_TIMEOUT "SessTimeout"
@@ -39,19 +34,20 @@ afs_int32 cryptall = 0;
 void cm_PutConn(cm_conn_t *connp)
 {
        lock_ObtainWrite(&cm_connLock);
-       osi_assert(connp->refCount-- > 0);
+       osi_assertx(connp->refCount-- > 0, "cm_conn_t refcount 0");
        lock_ReleaseWrite(&cm_connLock);
 }
 
 void cm_InitConn(void)
 {
-       static osi_once_t once;
-       long code;
-       DWORD sessTimeout;
-       HKEY parmKey;
+    static osi_once_t once;
+    long code;
+    DWORD dwValue;
+    DWORD dummyLen;
+    HKEY parmKey;
         
     if (osi_Once(&once)) {
-               lock_InitializeRWLock(&cm_connLock, "connection global lock");
+       lock_InitializeRWLock(&cm_connLock, "connection global lock");
 
         /* keisa - read timeout value for lanmanworkstation  service.
          * jaltman - as per 
@@ -60,40 +56,52 @@ void cm_InitConn(void)
          * I believe that the default should not be short.  Instead, we should wait until
          * RX times out before reporting a timeout to the SMB client.
          */
-               code = RegOpenKeyEx(HKEY_LOCAL_MACHINE, LANMAN_WKS_PARAM_KEY,
-                            0, KEY_QUERY_VALUE, &parmKey);
-               if (code == ERROR_SUCCESS)
+       code = RegOpenKeyEx(HKEY_LOCAL_MACHINE, LANMAN_WKS_PARAM_KEY,
+                           0, KEY_QUERY_VALUE, &parmKey);
+       if (code == ERROR_SUCCESS)
         {
-                   DWORD dummyLen = sizeof(sessTimeout);
-                   code = RegQueryValueEx(parmKey, LANMAN_WKS_SESSION_TIMEOUT, NULL, NULL, 
-                                   (BYTE *) &sessTimeout, &dummyLen);
-                   if (code == ERROR_SUCCESS)
-            {
-                afsi_log("lanmanworkstation : SessTimeout %d", sessTimeout);
-                RDRtimeout = sessTimeout;
-                if ( ConnDeadtimeout < RDRtimeout + 15 ) {
-                    ConnDeadtimeout = RDRtimeout + 15;
-                    afsi_log("ConnDeadTimeout increased to %d", ConnDeadtimeout);
-                }
-                if ( HardDeadtimeout < 2 * ConnDeadtimeout ) {
-                    HardDeadtimeout = 2 * ConnDeadtimeout;
-                    afsi_log("HardDeadTimeout increased to %d", HardDeadtimeout);
-                }
-            }
+           dummyLen = sizeof(DWORD);
+           code = RegQueryValueEx(parmKey, LANMAN_WKS_SESSION_TIMEOUT, NULL, NULL, 
+                                  (BYTE *) &dwValue, &dummyLen);
+           if (code == ERROR_SUCCESS)
+                RDRtimeout = dwValue;
+           RegCloseKey(parmKey);
         }
 
-        osi_EndOnce(&once);
+       code = RegOpenKeyEx(HKEY_LOCAL_MACHINE, AFSREG_CLT_SVC_PARAM_SUBKEY,
+                            0, KEY_QUERY_VALUE, &parmKey);
+       if (code == ERROR_SUCCESS) {
+           dummyLen = sizeof(DWORD);
+           code = RegQueryValueEx(parmKey, "ConnDeadTimeout", NULL, NULL,
+                                   (BYTE *) &dwValue, &dummyLen);
+           if (code == ERROR_SUCCESS)
+                ConnDeadtimeout = (unsigned short)dwValue;
+
+           dummyLen = sizeof(DWORD);
+           code = RegQueryValueEx(parmKey, "HardDeadTimeout", NULL, NULL,
+                                   (BYTE *) &dwValue, &dummyLen);
+           if (code == ERROR_SUCCESS)
+                HardDeadtimeout = (unsigned short)dwValue;
+           afsi_log("HardDeadTimeout is %d", HardDeadtimeout);
+           RegCloseKey(parmKey);
+       }
+
+       afsi_log("lanmanworkstation : SessTimeout %u", RDRtimeout);
+       if (ConnDeadtimeout == 0)
+           ConnDeadtimeout = (unsigned short) (RDRtimeout / 2);
+       afsi_log("ConnDeadTimeout is %d", ConnDeadtimeout);
+       if (HardDeadtimeout == 0)
+           HardDeadtimeout = (unsigned short) RDRtimeout;
+       afsi_log("HardDeadTimeout is %d", HardDeadtimeout);
+
+       osi_EndOnce(&once);
     }
 }
 
 void cm_InitReq(cm_req_t *reqp)
 {
        memset((char *)reqp, 0, sizeof(cm_req_t));
-#ifndef DJGPP
-       reqp->startTime = GetCurrentTime();
-#else
-        gettimeofday(&reqp->startTime, NULL);
-#endif
+       reqp->startTime = GetTickCount();
 }
 
 static long cm_GetServerList(struct cm_fid *fidp, struct cm_user *userp,
@@ -105,14 +113,16 @@ static long cm_GetServerList(struct cm_fid *fidp, struct cm_user *userp,
 
     if (!fidp) {
         *serversppp = NULL;
-        return 0;
+        return CM_ERROR_INVAL;
     }
 
-    cellp = cm_FindCellByID(fidp->cell);
-    if (!cellp) return CM_ERROR_NOSUCHCELL;
+    cellp = cm_FindCellByID(fidp->cell, 0);
+    if (!cellp) 
+        return CM_ERROR_NOSUCHCELL;
 
-    code = cm_GetVolumeByID(cellp, fidp->volume, userp, reqp, &volp);
-    if (code) return code;
+    code = cm_GetVolumeByID(cellp, fidp->volume, userp, reqp, CM_GETVOL_FLAG_CREATE, &volp);
+    if (code) 
+        return code;
     
     *serversppp = cm_GetVolServers(volp, fidp->volume);
 
@@ -125,12 +135,12 @@ static long cm_GetServerList(struct cm_fid *fidp, struct cm_user *userp,
  * and if we're going to retry, determine whether failover is appropriate,
  * and whether timed backoff is appropriate.
  *
- * If the error code is from cm_Conn() or friends, it will be a CM_ERROR code.
+ * If the error code is from cm_ConnFromFID() or friends, it will be a CM_ERROR code.
  * Otherwise it will be an RPC code.  This may be a UNIX code (e.g. EDQUOT), or
  * it may be an RX code, or it may be a special code (e.g. VNOVOL), or it may
  * be a security code (e.g. RXKADEXPIRED).
  *
- * If the error code is from cm_Conn() or friends, connp will be NULL.
+ * If the error code is from cm_ConnFromFID() or friends, connp will be NULL.
  *
  * For VLDB calls, fidp will be NULL.
  *
@@ -143,17 +153,23 @@ cm_Analyze(cm_conn_t *connp, cm_user_t *userp, cm_req_t *reqp,
            cm_serverRef_t * serversp,
            cm_callbackRequest_t *cbrp, long errorCode)
 {
-    cm_server_t *serverp = 0;
-    cm_serverRef_t **serverspp = 0;
+    cm_server_t *serverp = NULL;
+    cm_serverRef_t **serverspp = NULL;
     cm_serverRef_t *tsrp;
+    cm_cell_t  *cellp = NULL;
     cm_ucell_t *ucellp;
+    cm_volume_t * volp = NULL;
+    cm_vol_state_t *statep = NULL;
     int retry = 0;
     int free_svr_list = 0;
     int dead_session;
     long timeUsed, timeLeft;
-        
-    osi_Log2(afsd_logp, "cm_Analyze connp 0x%x, code 0x%x",
-             (long) connp, errorCode);
+    long code;
+    char addr[16];
+    int forcing_new = 0;
+
+    osi_Log2(afsd_logp, "cm_Analyze connp 0x%p, code 0x%x",
+             connp, errorCode);
 
     /* no locking required, since connp->serverp never changes after
      * creation */
@@ -178,31 +194,47 @@ cm_Analyze(cm_conn_t *connp, cm_user_t *userp, cm_req_t *reqp,
         lock_ReleaseWrite(&cm_callbackLock);
     }
 
-    /* If not allowed to retry, don't */
-    if (reqp->flags & CM_REQ_NORETRY)
-        goto out;
-
-    /* if timeout - check that it did not exceed the SMB timeout
+    /* if timeout - check that it did not exceed the HardDead timeout
      * and retry */
     
     /* timeleft - get if from reqp the same way as cmXonnByMServers does */
-#ifndef DJGPP
-    timeUsed = (GetCurrentTime() - reqp->startTime) / 1000;
-#else
-    gettimeofday(&now, NULL);
-    timeUsed = sub_time(now, reqp->startTime) / 1000;
-#endif
+    timeUsed = (GetTickCount() - reqp->startTime) / 1000;
            
     /* leave 5 seconds margin for sleep */
-    timeLeft = RDRtimeout - timeUsed;
+    timeLeft = HardDeadtimeout - timeUsed;
+
+    /* get a pointer to the cell */
+    if (errorCode) {
+        if (cellp == NULL && serverp)
+            cellp = serverp->cellp;
+        if (cellp == NULL && serversp) {
+            struct cm_serverRef * refp;
+            for ( refp=serversp ; cellp == NULL && refp != NULL; refp=refp->next) {
+                if ( refp->server )
+                    cellp = refp->server->cellp;
+            }
+        } 
+        if (cellp == NULL && fidp) {
+            cellp = cm_FindCellByID(fidp->cell, 0);
+        }
+    }
 
     if (errorCode == CM_ERROR_TIMEDOUT) {
         if (timeLeft > 5 ) {
             thrd_Sleep(3000);
-            cm_CheckServers(CM_FLAG_CHECKDOWNSERVERS, NULL);
+            cm_CheckServers(CM_FLAG_CHECKDOWNSERVERS, cellp);
+            retry = 1;
+        }
+    }
+
+    else if (errorCode == UAEWOULDBLOCK || errorCode == EWOULDBLOCK ||
+              errorCode == UAEAGAIN || errorCode == EAGAIN) {
+       osi_Log0(afsd_logp, "cm_Analyze passed EWOULDBLOCK or EAGAIN.");
+        if (timeLeft > 5 ) {
+            thrd_Sleep(1000);
             retry = 1;
         }
-    } 
+    }
 
     /* if there is nosuchvolume, then we have a situation in which a 
      * previously known volume no longer has a set of servers 
@@ -211,8 +243,8 @@ cm_Analyze(cm_conn_t *connp, cm_user_t *userp, cm_req_t *reqp,
      * until the timeout period expires.
      */
     else if (errorCode == CM_ERROR_NOSUCHVOLUME) {
+       osi_Log0(afsd_logp, "cm_Analyze passed CM_ERROR_NOSUCHVOLUME.");
         if (timeLeft > 7) {
-            osi_Log0(afsd_logp, "cm_Analyze passed CM_ERROR_NOSUCHVOLUME.");
             thrd_Sleep(5000);
             
             retry = 1;
@@ -222,81 +254,147 @@ cm_Analyze(cm_conn_t *connp, cm_user_t *userp, cm_req_t *reqp,
         }
     }
 
+    else if (errorCode == CM_ERROR_ALLDOWN) {
+       osi_Log0(afsd_logp, "cm_Analyze passed CM_ERROR_ALLDOWN.");
+       /* Servers marked DOWN will be restored by the background daemon
+        * thread as they become available.
+        */
+    }
+
     else if (errorCode == CM_ERROR_ALLOFFLINE) {
-        if (timeLeft > 7) {
-            osi_Log0(afsd_logp, "cm_Analyze passed CM_ERROR_ALLOFFLINE.");
+        osi_Log0(afsd_logp, "cm_Analyze passed CM_ERROR_ALLOFFLINE.");
+        /* Volume instances marked offline will be restored by the 
+         * background daemon thread as they become available 
+         */
+        if (timeLeft > 7 && fidp) {
             thrd_Sleep(5000);
-            /* cm_ForceUpdateVolume marks all servers as non_busy */
-            /* No it doesn't and it won't do anything if all of the 
-             * the servers are marked as DOWN.  So clear the DOWN
-             * flag and reset the busy state as well.
-             */
-            if (!serversp) {
-                cm_GetServerList(fidp, userp, reqp, &serverspp);
-                serversp = *serverspp;
-                free_svr_list = 1;
-            }
-            if (serversp) {
-                lock_ObtainWrite(&cm_serverLock);
-                for (tsrp = serversp; tsrp; tsrp=tsrp->next) {
-                    tsrp->server->flags &= ~CM_SERVERFLAG_DOWN;
-                    if (tsrp->status == busy)
-                        tsrp->status = not_busy;
-                }
-                lock_ReleaseWrite(&cm_serverLock);
-                if (free_svr_list) {
-                    cm_FreeServerList(&serversp);
-                    *serverspp = serversp;
+
+            code = cm_GetVolumeByID(cellp, fidp->volume, userp, reqp, 
+                                    CM_GETVOL_FLAG_NO_LRU_UPDATE, 
+                                    &volp);
+            if (code == 0) {
+                if (fidp->volume == volp->rw.ID)
+                    statep = &volp->rw;
+                else if (fidp->volume == volp->ro.ID)
+                    statep = &volp->ro;
+                else if (fidp->volume == volp->bk.ID)
+                    statep = &volp->bk;
+
+                if (statep->state != vl_offline && statep->state != vl_unknown) {
+                    retry = 1;
+                } else {
+                    if (cm_CheckOfflineVolume(volp, statep->ID))
+                        retry = 1;
                 }
-                retry = 1;
+            
+                cm_PutVolume(volp);
             }
-
-            if (fidp != NULL)   /* Not a VLDB call */
-                cm_ForceUpdateVolume(fidp, userp, reqp);
         }
     }
-
-    /* if all servers are busy, mark them non-busy and start over */
     else if (errorCode == CM_ERROR_ALLBUSY) {
+        /* Volumes that are busy cannot be determined to be non-busy 
+         * without actually attempting to access them.
+         */
+       osi_Log0(afsd_logp, "cm_Analyze passed CM_ERROR_ALLBUSY.");
         if (timeLeft > 7) {
+
             thrd_Sleep(5000);
-            if (!serversp) {
-                cm_GetServerList(fidp, userp, reqp, &serverspp);
-                serversp = *serverspp;
-                free_svr_list = 1;
-            }
-            lock_ObtainWrite(&cm_serverLock);
-            for (tsrp = serversp; tsrp; tsrp=tsrp->next) {
-                if (tsrp->status == busy)
-                    tsrp->status = not_busy;
-            }
-            lock_ReleaseWrite(&cm_serverLock);
-            if (free_svr_list) {
-                cm_FreeServerList(&serversp);
-                *serverspp = serversp;
+
+            if (fidp) { /* File Server query */
+                code = cm_GetVolumeByID(cellp, fidp->volume, userp, reqp, 
+                                        CM_GETVOL_FLAG_NO_LRU_UPDATE, 
+                                        &volp);
+                if (code == 0) {
+                    if (fidp->volume == volp->rw.ID)
+                        statep = &volp->rw;
+                    else if (fidp->volume == volp->ro.ID)
+                        statep = &volp->ro;
+                    else if (fidp->volume == volp->bk.ID)
+                        statep = &volp->bk;
+
+                    if (statep->state != vl_offline && 
+                        statep->state != vl_busy &&
+                        statep->state != vl_unknown) {
+                        retry = 1;
+                    } else {
+                        if (!serversp) {
+                            code = cm_GetServerList(fidp, userp, reqp, &serverspp);
+                            if (code == 0) {
+                                serversp = *serverspp;
+                                free_svr_list = 1;
+                            }
+                        }
+                        lock_ObtainWrite(&cm_serverLock);
+                        for (tsrp = serversp; tsrp; tsrp=tsrp->next) {
+                            if (tsrp->status == srv_busy) {
+                                tsrp->status = srv_not_busy;
+                            }
+                        }
+                        lock_ReleaseWrite(&cm_serverLock);
+                        if (free_svr_list) {
+                            cm_FreeServerList(&serversp, 0);
+                            *serverspp = serversp;
+                        }
+
+                        cm_UpdateVolumeStatus(volp, statep->ID);
+                        retry = 1;
+                    }
+            
+                    cm_PutVolume(volp);
+                }
+            } else {    /* VL Server query */
+                if (serversp) {
+                    lock_ObtainWrite(&cm_serverLock);
+                    for (tsrp = serversp; tsrp; tsrp=tsrp->next) {
+                        if (tsrp->status == srv_busy) {
+                            tsrp->status = srv_not_busy;
+                        }
+                    }
+                    lock_ReleaseWrite(&cm_serverLock);
+                    retry = 1;
+                }
             }
-            retry = 1;
         }
     }
 
     /* special codes:  VBUSY and VRESTARTING */
     else if (errorCode == VBUSY || errorCode == VRESTARTING) {
-        if (!serversp) {
-            cm_GetServerList(fidp, userp, reqp, &serverspp);
-            serversp = *serverspp;
-            free_svr_list = 1;
+        if (!serversp && fidp) {
+            code = cm_GetServerList(fidp, userp, reqp, &serverspp);
+            if (code == 0) {
+                serversp = *serverspp;
+                free_svr_list = 1;
+            }
         }
         lock_ObtainWrite(&cm_serverLock);
         for (tsrp = serversp; tsrp; tsrp=tsrp->next) {
-            if (tsrp->server == serverp
-                 && tsrp->status == not_busy) {
-                tsrp->status = busy;
+            if (tsrp->server == serverp && tsrp->status == srv_not_busy) {
+                tsrp->status = srv_busy;
+                if (fidp) { /* File Server query */
+                    code = cm_GetVolumeByID(cellp, fidp->volume, userp, reqp, 
+                                             CM_GETVOL_FLAG_NO_LRU_UPDATE, 
+                                             &volp);
+                    if (code == 0) {
+                        if (fidp->volume == volp->rw.ID)
+                            statep = &volp->rw;
+                        else if (fidp->volume == volp->ro.ID)
+                            statep = &volp->ro;
+                        else if (fidp->volume == volp->bk.ID)
+                            statep = &volp->bk;
+                    }
+                }
                 break;
             }
         }
         lock_ReleaseWrite(&cm_serverLock);
+        
+        if (statep) {
+            cm_UpdateVolumeStatus(volp, statep->ID);
+            cm_PutVolume(volp);
+        }
+
         if (free_svr_list) {
-            cm_FreeServerList(&serversp);
+            cm_FreeServerList(&serversp, 0);
             *serverspp = serversp;
         }
         retry = 1;
@@ -306,46 +404,133 @@ cm_Analyze(cm_conn_t *connp, cm_user_t *userp, cm_req_t *reqp,
     else if (errorCode == VNOVOL || errorCode == VMOVED || errorCode == VOFFLINE ||
              errorCode == VSALVAGE || errorCode == VNOSERVICE || errorCode == VIO) 
     {       
-        /* Log server being offline for this volume */
-        osi_Log4(afsd_logp, "cm_Analyze found server %d.%d.%d.%d marked offline for a volume",
-                  ((serverp->addr.sin_addr.s_addr & 0xff)),
-                  ((serverp->addr.sin_addr.s_addr & 0xff00)>> 8),
-                  ((serverp->addr.sin_addr.s_addr & 0xff0000)>> 16),
-                  ((serverp->addr.sin_addr.s_addr & 0xff000000)>> 24));
-        /* Create Event Log message */ 
-        {
-            HANDLE h;
-            char *ptbuf[1];
-            char s[100];
-            h = RegisterEventSource(NULL, AFS_DAEMON_EVENT_NAME);
-            sprintf(s, "cm_Analyze: Server %d.%d.%d.%d reported volume %d as missing.",
-                     ((serverp->addr.sin_addr.s_addr & 0xff)),
-                     ((serverp->addr.sin_addr.s_addr & 0xff00)>> 8),
-                     ((serverp->addr.sin_addr.s_addr & 0xff0000)>> 16),
-                     ((serverp->addr.sin_addr.s_addr & 0xff000000)>> 24),
-                     fidp->volume);
-            ptbuf[0] = s;
-            ReportEvent(h, EVENTLOG_WARNING_TYPE, 0, 1009, NULL,
-                         1, 0, ptbuf, NULL);
-            DeregisterEventSource(h);
+        char addr[16];
+        char *format;
+       DWORD msgID;
+        switch ( errorCode ) {
+        case VNOVOL:
+           msgID = MSG_SERVER_REPORTS_VNOVOL;
+            format = "Server %s reported volume %d as not attached.";
+            break;
+        case VMOVED:
+           msgID = MSG_SERVER_REPORTS_VMOVED;
+            format = "Server %s reported volume %d as moved.";
+            break;
+        case VOFFLINE:
+           msgID = MSG_SERVER_REPORTS_VOFFLINE;
+            format = "Server %s reported volume %d as offline.";
+            break;
+        case VSALVAGE:
+           msgID = MSG_SERVER_REPORTS_VSALVAGE;
+            format = "Server %s reported volume %d as needs salvage.";
+            break;
+        case VNOSERVICE:
+           msgID = MSG_SERVER_REPORTS_VNOSERVICE;
+            format = "Server %s reported volume %d as not in service.";
+            break;
+        case VIO:
+           msgID = MSG_SERVER_REPORTS_VIO;
+            format = "Server %s reported volume %d as temporarily unaccessible.";
+            break;
+        }
+
+        if (serverp && fidp) {
+            /* Log server being offline for this volume */
+            sprintf(addr, "%d.%d.%d.%d", 
+                   ((serverp->addr.sin_addr.s_addr & 0xff)),
+                   ((serverp->addr.sin_addr.s_addr & 0xff00)>> 8),
+                   ((serverp->addr.sin_addr.s_addr & 0xff0000)>> 16),
+                   ((serverp->addr.sin_addr.s_addr & 0xff000000)>> 24)); 
+
+           osi_Log2(afsd_logp, format, osi_LogSaveString(afsd_logp,addr), fidp->volume);
+           LogEvent(EVENTLOG_WARNING_TYPE, msgID, addr, fidp->volume);
         }
 
         /* Mark server offline for this volume */
-        if (!serversp) {
-            cm_GetServerList(fidp, userp, reqp, &serverspp);
-            serversp = *serverspp;
-            free_svr_list = 1;
+        if (!serversp && fidp) {
+            code = cm_GetServerList(fidp, userp, reqp, &serverspp);
+            if (code == 0) {
+                serversp = *serverspp;
+                free_svr_list = 1;
+            }
         }
+
+        lock_ObtainWrite(&cm_serverLock);
         for (tsrp = serversp; tsrp; tsrp=tsrp->next) {
-            if (tsrp->server == serverp)
-                tsrp->status = offline;
+            if (tsrp->server == serverp) {
+                /* REDIRECT */
+                if (errorCode == VMOVED) {
+                    tsrp->status = srv_deleted;
+                } else {
+                    tsrp->status = srv_offline;
+                }
+
+                if (fidp) { /* File Server query */
+                    code = cm_GetVolumeByID(cellp, fidp->volume, userp, reqp, 
+                                             CM_GETVOL_FLAG_NO_LRU_UPDATE, 
+                                             &volp);
+                    if (code == 0) {
+                        if (fidp->volume == volp->rw.ID)
+                            statep = &volp->rw;
+                        else if (fidp->volume == volp->ro.ID)
+                            statep = &volp->ro;
+                        else if (fidp->volume == volp->bk.ID)
+                            statep = &volp->bk;
+                    }
+                }   
+            }
         }   
+        lock_ReleaseWrite(&cm_serverLock);
+
+        if (fidp && errorCode == VMOVED)
+            cm_ForceUpdateVolume(fidp, userp, reqp);
+
+        if (statep) {
+            cm_UpdateVolumeStatus(volp, statep->ID);
+            cm_PutVolume(volp);
+        }
+
         if (free_svr_list) {
-            cm_FreeServerList(&serversp);
+            cm_FreeServerList(&serversp, 0);
             *serverspp = serversp;
         }
         if ( timeLeft > 2 )
             retry = 1;
+    } else if ( errorCode == VNOVNODE ) {
+       if ( fidp ) {
+           cm_scache_t * scp;
+           osi_Log4(afsd_logp, "cm_Analyze passed VNOVNODE cell %u vol %u vn %u uniq %u.",
+                     fidp->cell, fidp->volume, fidp->vnode, fidp->unique);
+
+           scp = cm_FindSCache(fidp);
+           if (scp) {
+               cm_scache_t *pscp = NULL;
+
+               if (scp->fileType != CM_SCACHETYPE_DIRECTORY)
+                   pscp = cm_FindSCacheParent(scp);
+
+
+               lock_ObtainMutex(&scp->mx);
+               lock_ObtainWrite(&cm_scacheLock);
+               cm_RemoveSCacheFromHashTable(scp);
+               lock_ReleaseWrite(&cm_scacheLock);
+                cm_LockMarkSCacheLost(scp);
+               scp->flags |= CM_SCACHEFLAG_DELETED;
+               lock_ReleaseMutex(&scp->mx);
+               cm_ReleaseSCache(scp);
+
+               if (pscp) {
+                   if (cm_HaveCallback(pscp)) {
+                       lock_ObtainMutex(&pscp->mx);
+                       cm_DiscardSCache(pscp);
+                       lock_ReleaseMutex(&pscp->mx);
+                   }
+                   cm_ReleaseSCache(pscp);
+               }
+           }
+       } else {
+           osi_Log0(afsd_logp, "cm_Analyze passed VNOVNODE unknown fid.");
+       }
     }
 
     /* RX codes */
@@ -355,31 +540,38 @@ cm_Analyze(cm_conn_t *connp, cm_user_t *userp, cm_req_t *reqp,
          * this is to prevent the SMB session from timing out
          * In addition, we log an event to the event log 
          */
-#ifndef DJGPP
-        HANDLE h;
-        char *ptbuf[1];
-        char s[100];
-        h = RegisterEventSource(NULL, AFS_DAEMON_EVENT_NAME);
-        sprintf(s, "cm_Analyze: HardDeadTime exceeded.");
-        ptbuf[0] = s;
-        ReportEvent(h, EVENTLOG_WARNING_TYPE, 0, 1009, NULL,
-                     1, 0, ptbuf, NULL);
-        DeregisterEventSource(h);
-#endif /* !DJGPP */
+
+        /* Log server being offline for this volume */
+        sprintf(addr, "%d.%d.%d.%d", 
+                 ((serverp->addr.sin_addr.s_addr & 0xff)),
+                 ((serverp->addr.sin_addr.s_addr & 0xff00)>> 8),
+                 ((serverp->addr.sin_addr.s_addr & 0xff0000)>> 16),
+                 ((serverp->addr.sin_addr.s_addr & 0xff000000)>> 24)); 
+
+       LogEvent(EVENTLOG_WARNING_TYPE, MSG_RX_HARD_DEAD_TIME_EXCEEDED, addr);
          
         retry = 0;
-        osi_Log0(afsd_logp, "cm_Analyze: hardDeadTime exceeded");
+        osi_Log1(afsd_logp, "cm_Analyze: hardDeadTime exceeded addr[%s]",
+                osi_LogSaveString(afsd_logp,addr));
     }
     else if (errorCode >= -64 && errorCode < 0) {
         /* mark server as down */
         lock_ObtainMutex(&serverp->mx);
-        serverp->flags |= CM_SERVERFLAG_DOWN;
+       if (reqp->flags & CM_REQ_NEW_CONN_FORCED) {
+            if (!(serverp->flags & CM_SERVERFLAG_DOWN)) {
+                serverp->flags |= CM_SERVERFLAG_DOWN;
+                serverp->downTime = time(NULL);
+            }
+        } else {
+           reqp->flags |= CM_REQ_NEW_CONN_FORCED;
+           forcing_new = 1;
+       }
         lock_ReleaseMutex(&serverp->mx);
+       cm_ForceNewConnections(serverp);
         if ( timeLeft > 2 )
             retry = 1;
     }
-    else if (errorCode == RXKADEXPIRED || 
-             errorCode == RXKADBADTICKET) {
+    else if (errorCode == RXKADEXPIRED) {
         if (!dead_session) {
             lock_ObtainMutex(&userp->mx);
             ucellp = cm_GetUCell(userp, serverp->cellp);
@@ -393,6 +585,10 @@ cm_Analyze(cm_conn_t *connp, cm_user_t *userp, cm_req_t *reqp,
             if ( timeLeft > 2 )
                 retry = 1;
         }
+    } else if (errorCode == VICECONNBAD || errorCode == VICETOKENDEAD) {
+       cm_ForceNewConnections(serverp);
+        if ( timeLeft > 2 )
+            retry = 1;
     } else {
         if (errorCode) {
             char * s = "unknown error";
@@ -425,6 +621,69 @@ cm_Analyze(cm_conn_t *connp, cm_user_t *userp, cm_req_t *reqp,
             case VRESTRICTED       : s = "VRESTRICTED";        break;
             case VRESTARTING       : s = "VRESTARTING";        break;
             case VREADONLY         : s = "VREADONLY";          break;
+            case EAGAIN            : s = "EAGAIN";             break;
+           case UAEAGAIN          : s = "UAEAGAIN";           break;
+            case EINVAL            : s = "EINVAL";             break;
+           case UAEINVAL          : s = "UAEINVAL";           break;
+            case EACCES            : s = "EACCES";             break;
+           case UAEACCES          : s = "UAEACCES";           break;
+           case ENOENT            : s = "ENOENT";             break;
+           case UAENOENT          : s = "UAENOENT";           break;
+           case VICECONNBAD       : s = "VICECONNBAD";        break;
+           case VICETOKENDEAD     : s = "VICETOKENDEAD";      break;
+            case WSAEWOULDBLOCK    : s = "WSAEWOULDBLOCK";     break;
+            case UAEWOULDBLOCK     : s = "UAEWOULDBLOCK";      break;
+           case CM_ERROR_NOSUCHCELL        : s = "CM_ERROR_NOSUCHCELL";         break;                         
+           case CM_ERROR_NOSUCHVOLUME      : s = "CM_ERROR_NOSUCHVOLUME";       break;                         
+           case CM_ERROR_TIMEDOUT          : s = "CM_ERROR_TIMEDOUT";           break;                 
+           case CM_ERROR_RETRY             : s = "CM_ERROR_RETRY";              break; 
+           case CM_ERROR_NOACCESS          : s = "CM_ERROR_NOACCESS";           break; 
+           case CM_ERROR_NOSUCHFILE        : s = "CM_ERROR_NOSUCHFILE";         break;                         
+           case CM_ERROR_STOPNOW           : s = "CM_ERROR_STOPNOW";            break;                         
+           case CM_ERROR_TOOBIG            : s = "CM_ERROR_TOOBIG";             break;                                 
+           case CM_ERROR_INVAL             : s = "CM_ERROR_INVAL";              break;                                 
+           case CM_ERROR_BADFD             : s = "CM_ERROR_BADFD";              break;                                 
+           case CM_ERROR_BADFDOP           : s = "CM_ERROR_BADFDOP";            break;                         
+           case CM_ERROR_EXISTS            : s = "CM_ERROR_EXISTS";             break;                                 
+           case CM_ERROR_CROSSDEVLINK      : s = "CM_ERROR_CROSSDEVLINK";       break;                         
+           case CM_ERROR_BADOP             : s = "CM_ERROR_BADOP";              break;                                 
+           case CM_ERROR_BADPASSWORD       : s = "CM_ERROR_BADPASSWORD";        break;         
+           case CM_ERROR_NOTDIR            : s = "CM_ERROR_NOTDIR";             break;                                 
+           case CM_ERROR_ISDIR             : s = "CM_ERROR_ISDIR";              break;                                 
+           case CM_ERROR_READONLY          : s = "CM_ERROR_READONLY";           break;                         
+           case CM_ERROR_WOULDBLOCK        : s = "CM_ERROR_WOULDBLOCK";         break;                         
+           case CM_ERROR_QUOTA             : s = "CM_ERROR_QUOTA";              break;                                 
+           case CM_ERROR_SPACE             : s = "CM_ERROR_SPACE";              break;                                 
+           case CM_ERROR_BADSHARENAME      : s = "CM_ERROR_BADSHARENAME";       break;                         
+           case CM_ERROR_BADTID            : s = "CM_ERROR_BADTID";             break;                                 
+           case CM_ERROR_UNKNOWN           : s = "CM_ERROR_UNKNOWN";            break;                         
+           case CM_ERROR_NOMORETOKENS      : s = "CM_ERROR_NOMORETOKENS";       break;                         
+           case CM_ERROR_NOTEMPTY          : s = "CM_ERROR_NOTEMPTY";           break;                         
+           case CM_ERROR_USESTD            : s = "CM_ERROR_USESTD";             break;                                 
+           case CM_ERROR_REMOTECONN        : s = "CM_ERROR_REMOTECONN";         break;                         
+           case CM_ERROR_ATSYS             : s = "CM_ERROR_ATSYS";              break;                                 
+           case CM_ERROR_NOSUCHPATH        : s = "CM_ERROR_NOSUCHPATH";         break;                         
+           case CM_ERROR_CLOCKSKEW         : s = "CM_ERROR_CLOCKSKEW";          break;                         
+           case CM_ERROR_BADSMB            : s = "CM_ERROR_BADSMB";             break;                                 
+           case CM_ERROR_ALLBUSY           : s = "CM_ERROR_ALLBUSY";            break;                         
+           case CM_ERROR_NOFILES           : s = "CM_ERROR_NOFILES";            break;                         
+           case CM_ERROR_PARTIALWRITE      : s = "CM_ERROR_PARTIALWRITE";       break;                         
+           case CM_ERROR_NOIPC             : s = "CM_ERROR_NOIPC";              break;                                 
+           case CM_ERROR_BADNTFILENAME     : s = "CM_ERROR_BADNTFILENAME";      break;                         
+           case CM_ERROR_BUFFERTOOSMALL    : s = "CM_ERROR_BUFFERTOOSMALL";     break;                         
+           case CM_ERROR_RENAME_IDENTICAL  : s = "CM_ERROR_RENAME_IDENTICAL";   break;                 
+           case CM_ERROR_ALLOFFLINE        : s = "CM_ERROR_ALLOFFLINE";         break;          
+           case CM_ERROR_AMBIGUOUS_FILENAME: s = "CM_ERROR_AMBIGUOUS_FILENAME"; break;  
+           case CM_ERROR_BADLOGONTYPE      : s = "CM_ERROR_BADLOGONTYPE";       break;             
+           case CM_ERROR_GSSCONTINUE       : s = "CM_ERROR_GSSCONTINUE";        break;         
+           case CM_ERROR_TIDIPC            : s = "CM_ERROR_TIDIPC";             break;              
+           case CM_ERROR_TOO_MANY_SYMLINKS : s = "CM_ERROR_TOO_MANY_SYMLINKS";  break;   
+           case CM_ERROR_PATH_NOT_COVERED  : s = "CM_ERROR_PATH_NOT_COVERED";   break;    
+           case CM_ERROR_LOCK_CONFLICT     : s = "CM_ERROR_LOCK_CONFLICT";      break;       
+           case CM_ERROR_SHARING_VIOLATION : s = "CM_ERROR_SHARING_VIOLATION";  break;   
+           case CM_ERROR_ALLDOWN           : s = "CM_ERROR_ALLDOWN";            break;             
+           case CM_ERROR_TOOFEWBUFS        : s = "CM_ERROR_TOOFEWBUFS";         break;                         
+           case CM_ERROR_TOOMANYBUFS       : s = "CM_ERROR_TOOMANYBUFS";        break;                         
             }
             osi_Log2(afsd_logp, "cm_Analyze: ignoring error code 0x%x (%s)", 
                      errorCode, s);
@@ -432,7 +691,10 @@ cm_Analyze(cm_conn_t *connp, cm_user_t *userp, cm_req_t *reqp,
         }
     }
 
-    if (retry && dead_session)
+    /* If not allowed to retry, don't */
+    if (!forcing_new && (reqp->flags & CM_REQ_NORETRY))
+       retry = 0;
+    else if (retry && dead_session)
         retry = 0;
 
   out:
@@ -451,20 +713,17 @@ long cm_ConnByMServers(cm_serverRef_t *serversp, cm_user_t *usersp,
     cm_serverRef_t *tsrp;
     cm_server_t *tsp;
     long firstError = 0;
-    int someBusy = 0, someOffline = 0, allBusy = 1, allDown = 1;
+    int someBusy = 0, someOffline = 0, allOffline = 1, allBusy = 1, allDown = 1;
     long timeUsed, timeLeft, hardTimeLeft;
-#ifdef DJGPP
-    struct timeval now;
-#endif /* DJGPP */        
 
     *connpp = NULL;
 
-#ifndef DJGPP
-    timeUsed = (GetCurrentTime() - reqp->startTime) / 1000;
-#else
-    gettimeofday(&now, NULL);
-    timeUsed = sub_time(now, reqp->startTime) / 1000;
-#endif
+    if (serversp == NULL) {
+       osi_Log1(afsd_logp, "cm_ConnByMServers returning 0x%x", CM_ERROR_ALLDOWN);
+       return CM_ERROR_ALLDOWN;
+    }
+
+    timeUsed = (GetTickCount() - reqp->startTime) / 1000;
         
     /* leave 5 seconds margin of safety */
     timeLeft =  ConnDeadtimeout - timeUsed - 5;
@@ -476,13 +735,17 @@ long cm_ConnByMServers(cm_serverRef_t *serversp, cm_user_t *usersp,
         cm_GetServerNoLock(tsp);
         lock_ReleaseWrite(&cm_serverLock);
         if (!(tsp->flags & CM_SERVERFLAG_DOWN)) {
-            if (tsrp->status == busy) {
-                allDown = 0;
+           allDown = 0;
+            if (tsrp->status == srv_deleted) {
+                /* skip this entry.  no longer valid. */;
+            } else if (tsrp->status == srv_busy) {
+               allOffline = 0;
                 someBusy = 1;
-            } else if (tsrp->status == offline) {
-                someOffline = 1;
+            } else if (tsrp->status == srv_offline) {
+               allBusy = 0;
+               someOffline = 1;
             } else {
-                allDown = 0;
+               allOffline = 0;
                 allBusy = 0;
                 code = cm_ConnByServer(tsp, usersp, connpp);
                 if (code == 0) {        /* cm_CBS only returns 0 */
@@ -509,15 +772,15 @@ long cm_ConnByMServers(cm_serverRef_t *serversp, cm_user_t *usersp,
         lock_ObtainWrite(&cm_serverLock);
         cm_PutServerNoLock(tsp);
     }   
-
     lock_ReleaseWrite(&cm_serverLock);
+
     if (firstError == 0) {
-        if (serversp == NULL)
-            firstError = CM_ERROR_NOSUCHVOLUME;
-        else if (allDown) 
-            firstError = CM_ERROR_ALLOFFLINE;
+        if (allDown) 
+            firstError = CM_ERROR_ALLDOWN;
         else if (allBusy) 
             firstError = CM_ERROR_ALLBUSY;
+       else if (allOffline || (someBusy && someOffline))
+           firstError = CM_ERROR_ALLOFFLINE;
         else {
             osi_Log0(afsd_logp, "cm_ConnByMServers returning impossible error TIMEDOUT");
             firstError = CM_ERROR_TIMEDOUT;
@@ -569,7 +832,7 @@ static void cm_NewRXConnection(cm_conn_t *tcp, cm_ucell_t *ucellp,
         serviceID = 52;
     }
     else {
-        osi_assert(serverp->type == CM_SERVER_FILE);
+        osi_assertx(serverp->type == CM_SERVER_FILE, "incorrect server type");
         port = htons(7000);
         serviceID = 1;
     }
@@ -589,7 +852,7 @@ static void cm_NewRXConnection(cm_conn_t *tcp, cm_ucell_t *ucellp,
         tcp->cryptlevel = rxkad_clear;
         secObjp = rxnull_NewClientSecurityObject();
     }
-    osi_assert(secObjp != NULL);
+    osi_assertx(secObjp != NULL, "null rx_securityClass");
     tcp->callp = rx_NewConnection(serverp->addr.sin_addr.s_addr,
                                   port,
                                   serviceID,
@@ -607,6 +870,8 @@ long cm_ConnByServer(cm_server_t *serverp, cm_user_t *userp, cm_conn_t **connpp)
     cm_conn_t *tcp;
     cm_ucell_t *ucellp;
 
+    *connpp = NULL;
+
     lock_ObtainMutex(&userp->mx);
     lock_ObtainWrite(&cm_connLock);
     for (tcp = serverp->connsp; tcp; tcp=tcp->nextp) {
@@ -632,7 +897,8 @@ long cm_ConnByServer(cm_server_t *serverp, cm_user_t *userp, cm_conn_t **connpp)
         tcp->refCount = 1;
         lock_ReleaseMutex(&tcp->mx);
     } else {
-        if ((tcp->ucgen < ucellp->gen) ||
+        if ((tcp->flags & CM_CONN_FLAG_FORCE_NEW) ||
+            (tcp->ucgen < ucellp->gen) ||
             (tcp->cryptlevel != (cryptall ? (ucellp->flags & CM_UCELLFLAG_RXKAD ? rxkad_crypt : rxkad_clear) : rxkad_clear)))
         {
             if (tcp->ucgen < ucellp->gen)
@@ -640,6 +906,7 @@ long cm_ConnByServer(cm_server_t *serverp, cm_user_t *userp, cm_conn_t **connpp)
             else
                 osi_Log0(afsd_logp, "cm_ConnByServer replace connection due to crypt change");
             lock_ObtainMutex(&tcp->mx);
+           tcp->flags &= ~CM_CONN_FLAG_FORCE_NEW;
             rx_DestroyConnection(tcp->callp);
             cm_NewRXConnection(tcp, ucellp, serverp);
             lock_ReleaseMutex(&tcp->mx);
@@ -650,31 +917,99 @@ long cm_ConnByServer(cm_server_t *serverp, cm_user_t *userp, cm_conn_t **connpp)
     lock_ReleaseMutex(&userp->mx);
 
     /* return this pointer to our caller */
-    osi_Log1(afsd_logp, "cm_ConnByServer returning conn 0x%x", (long) tcp);
+    osi_Log1(afsd_logp, "cm_ConnByServer returning conn 0x%p", tcp);
     *connpp = tcp;
 
     return 0;
 }
 
-long cm_Conn(struct cm_fid *fidp, struct cm_user *userp, cm_req_t *reqp,
-             cm_conn_t **connpp)
+long cm_ServerAvailable(struct cm_fid *fidp, struct cm_user *userp)
 {
     long code;
+    cm_req_t req;
+    cm_serverRef_t **serverspp;
+    cm_serverRef_t *tsrp;
+    cm_server_t *tsp;
+    int someBusy = 0, someOffline = 0, allOffline = 1, allBusy = 1, allDown = 1;
+
+    cm_InitReq(&req);
+
+    code = cm_GetServerList(fidp, userp, &req, &serverspp);
+    if (code)
+        return 0;
+
+    lock_ObtainWrite(&cm_serverLock);
+    for (tsrp = *serverspp; tsrp; tsrp=tsrp->next) {
+        tsp = tsrp->server;
+        cm_GetServerNoLock(tsp);
+        if (!(tsp->flags & CM_SERVERFLAG_DOWN)) {
+           allDown = 0;
+            if (tsrp->status == srv_busy) {
+               allOffline = 0;
+                someBusy = 1;
+            } else if (tsrp->status == srv_offline) {
+               allBusy = 0;
+               someOffline = 1;
+            } else {
+               allOffline = 0;
+                allBusy = 0;
+            }
+        }
+        cm_PutServerNoLock(tsp);
+    }   
+    lock_ReleaseWrite(&cm_serverLock);
+    cm_FreeServerList(serverspp, 0);
+
+    if (allDown)
+       return 0;
+    else if (allBusy) 
+       return 0;
+    else if (allOffline || (someBusy && someOffline))
+       return 0;
+    else
+       return 1;
+}
 
+/* 
+ * The returned cm_conn_t ** object is released in the subsequent call
+ * to cm_Analyze().  
+ */
+long cm_ConnFromFID(struct cm_fid *fidp, struct cm_user *userp, cm_req_t *reqp,
+                    cm_conn_t **connpp)
+{
+    long code;
     cm_serverRef_t **serverspp;
 
+    *connpp = NULL;
+
     code = cm_GetServerList(fidp, userp, reqp, &serverspp);
     if (code) {
-        *connpp = NULL;
         return code;
     }
 
     code = cm_ConnByMServers(*serverspp, userp, reqp, connpp);
-    cm_FreeServerList(serverspp);
+    cm_FreeServerList(serverspp, 0);
     return code;
 }
 
-extern struct rx_connection * 
+
+long cm_ConnFromVolume(struct cm_volume *volp, unsigned long volid, struct cm_user *userp, cm_req_t *reqp,
+                       cm_conn_t **connpp)
+{
+    long code;
+    cm_serverRef_t **serverspp;
+
+    *connpp = NULL;
+
+    serverspp = cm_GetVolServers(volp, volid);
+
+    code = cm_ConnByMServers(*serverspp, userp, reqp, connpp);
+    cm_FreeServerList(serverspp, 0);
+    return code;
+}
+
+
+extern struct rx_connection *
 cm_GetRxConn(cm_conn_t *connp)
 {
     struct rx_connection * rxconn;
@@ -685,3 +1020,15 @@ cm_GetRxConn(cm_conn_t *connp)
     return rxconn;
 }
 
+void cm_ForceNewConnections(cm_server_t *serverp)
+{
+    cm_conn_t *tcp;
+
+    lock_ObtainWrite(&cm_connLock);
+    for (tcp = serverp->connsp; tcp; tcp=tcp->nextp) {
+       lock_ObtainMutex(&tcp->mx);
+       tcp->flags |= CM_CONN_FLAG_FORCE_NEW;
+       lock_ReleaseMutex(&tcp->mx);
+    }
+    lock_ReleaseWrite(&cm_connLock);
+}