2 * Copyright 2000, International Business Machines Corporation and others.
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
10 #include <afs/param.h>
20 #include <afs/unified_afs.h>
21 #include <afs/vlserver.h>
22 #include <WINNT/afsreg.h>
24 osi_rwlock_t cm_connLock;
26 DWORD RDRtimeout = CM_CONN_DEFAULTRDRTIMEOUT;
27 unsigned short ConnDeadtimeout = CM_CONN_CONNDEADTIME;
28 unsigned short HardDeadtimeout = CM_CONN_HARDDEADTIME;
29 unsigned short IdleDeadtimeout = CM_CONN_IDLEDEADTIME;
31 #define LANMAN_WKS_PARAM_KEY "SYSTEM\\CurrentControlSet\\Services\\lanmanworkstation\\parameters"
32 #define LANMAN_WKS_SESSION_TIMEOUT "SessTimeout"
33 #define LANMAN_WKS_EXT_SESSION_TIMEOUT "ExtendedSessTimeout"
35 afs_uint32 cryptall = 0;
36 afs_uint32 cm_anonvldb = 0;
38 void cm_PutConn(cm_conn_t *connp)
40 afs_int32 refCount = InterlockedDecrement(&connp->refCount);
41 osi_assertx(refCount >= 0, "cm_conn_t refcount underflow");
44 void cm_InitConn(void)
46 static osi_once_t once;
52 if (osi_Once(&once)) {
53 lock_InitializeRWLock(&cm_connLock, "connection global lock",
54 LOCK_HIERARCHY_CONN_GLOBAL);
56 /* keisa - read timeout value for lanmanworkstation service.
58 * http://support.microsoft.com:80/support/kb/articles/Q102/0/67.asp&NoWebContent=1
59 * the SessTimeout is a minimum timeout not a maximum timeout. Therefore,
60 * I believe that the default should not be short. Instead, we should wait until
61 * RX times out before reporting a timeout to the SMB client.
63 code = RegOpenKeyEx(HKEY_LOCAL_MACHINE, LANMAN_WKS_PARAM_KEY,
64 0, KEY_QUERY_VALUE, &parmKey);
65 if (code == ERROR_SUCCESS)
67 BOOL extTimeouts = msftSMBRedirectorSupportsExtendedTimeouts();
71 * The default value is 1000 seconds. However, this default
72 * will not apply to "\\AFS" unless "AFS" is listed in
73 * ServersWithExtendedSessTimeout which we will add when we
74 * create the ExtendedSessTimeout value in smb_Init()
76 dummyLen = sizeof(DWORD);
77 code = RegQueryValueEx(parmKey,
78 LANMAN_WKS_EXT_SESSION_TIMEOUT,
80 (BYTE *) &dwValue, &dummyLen);
81 if (code == ERROR_SUCCESS) {
83 afsi_log("lanmanworkstation : ExtSessTimeout %u", RDRtimeout);
86 if (!extTimeouts || code != ERROR_SUCCESS) {
87 dummyLen = sizeof(DWORD);
88 code = RegQueryValueEx(parmKey,
89 LANMAN_WKS_SESSION_TIMEOUT,
91 (BYTE *) &dwValue, &dummyLen);
92 if (code == ERROR_SUCCESS) {
94 afsi_log("lanmanworkstation : SessTimeout %u", RDRtimeout);
100 code = RegOpenKeyEx(HKEY_LOCAL_MACHINE, AFSREG_CLT_SVC_PARAM_SUBKEY,
101 0, KEY_QUERY_VALUE, &parmKey);
102 if (code == ERROR_SUCCESS) {
103 dummyLen = sizeof(DWORD);
104 code = RegQueryValueEx(parmKey, "ConnDeadTimeout", NULL, NULL,
105 (BYTE *) &dwValue, &dummyLen);
106 if (code == ERROR_SUCCESS) {
107 ConnDeadtimeout = (unsigned short)dwValue;
108 afsi_log("ConnDeadTimeout is %d", ConnDeadtimeout);
110 dummyLen = sizeof(DWORD);
111 code = RegQueryValueEx(parmKey, "HardDeadTimeout", NULL, NULL,
112 (BYTE *) &dwValue, &dummyLen);
113 if (code == ERROR_SUCCESS) {
114 HardDeadtimeout = (unsigned short)dwValue;
115 afsi_log("HardDeadTimeout is %d", HardDeadtimeout);
117 dummyLen = sizeof(DWORD);
118 code = RegQueryValueEx(parmKey, "IdleDeadTimeout", NULL, NULL,
119 (BYTE *) &dwValue, &dummyLen);
120 if (code == ERROR_SUCCESS) {
121 IdleDeadtimeout = (unsigned short)dwValue;
122 afsi_log("IdleDeadTimeout is %d", IdleDeadtimeout);
124 RegCloseKey(parmKey);
128 * If these values were not set via cpp macro or obtained
129 * from the registry, we use a value that is derived from
130 * the smb redirector session timeout (RDRtimeout).
132 * The UNIX cache manager uses 120 seconds for the hard dead
133 * timeout and 50 seconds for the connection and idle timeouts.
135 * We base our values on those while making sure we leave
136 * enough time for overhead.
138 if (ConnDeadtimeout == 0) {
139 ConnDeadtimeout = (unsigned short) ((RDRtimeout / 2) < 50 ? (RDRtimeout / 2) : 50);
140 afsi_log("ConnDeadTimeout is %d", ConnDeadtimeout);
142 if (HardDeadtimeout == 0) {
143 HardDeadtimeout = (unsigned short) (RDRtimeout > 125 ? 120 : (RDRtimeout - 5));
144 afsi_log("HardDeadTimeout is %d", HardDeadtimeout);
146 if (IdleDeadtimeout == 0) {
147 IdleDeadtimeout = (unsigned short) ConnDeadtimeout;
148 afsi_log("IdleDeadTimeout is %d", IdleDeadtimeout);
154 void cm_InitReq(cm_req_t *reqp)
156 memset((char *)reqp, 0, sizeof(cm_req_t));
157 reqp->startTime = GetTickCount();
160 static long cm_GetServerList(struct cm_fid *fidp, struct cm_user *userp,
161 struct cm_req *reqp, cm_serverRef_t ***serversppp)
164 cm_volume_t *volp = NULL;
165 cm_cell_t *cellp = NULL;
169 return CM_ERROR_INVAL;
172 cellp = cm_FindCellByID(fidp->cell, 0);
174 return CM_ERROR_NOSUCHCELL;
176 code = cm_FindVolumeByID(cellp, fidp->volume, userp, reqp, CM_GETVOL_FLAG_CREATE, &volp);
180 *serversppp = cm_GetVolServers(volp, fidp->volume, userp, reqp);
182 lock_ObtainRead(&cm_volumeLock);
184 lock_ReleaseRead(&cm_volumeLock);
185 return (*serversppp ? 0 : CM_ERROR_NOSUCHVOLUME);
189 * Analyze the error return from an RPC. Determine whether or not to retry,
190 * and if we're going to retry, determine whether failover is appropriate,
191 * and whether timed backoff is appropriate.
193 * If the error code is from cm_ConnFromFID() or friends, it will be a CM_ERROR code.
194 * Otherwise it will be an RPC code. This may be a UNIX code (e.g. EDQUOT), or
195 * it may be an RX code, or it may be a special code (e.g. VNOVOL), or it may
196 * be a security code (e.g. RXKADEXPIRED).
198 * If the error code is from cm_ConnFromFID() or friends, connp will be NULL.
200 * For VLDB calls, fidp will be NULL.
202 * volSyncp and/or cbrp may also be NULL.
205 cm_Analyze(cm_conn_t *connp, cm_user_t *userp, cm_req_t *reqp,
207 AFSVolSync *volSyncp,
208 cm_serverRef_t * serversp,
209 cm_callbackRequest_t *cbrp, long errorCode)
211 cm_server_t *serverp = NULL;
212 cm_serverRef_t **serverspp = NULL;
213 cm_serverRef_t *tsrp;
214 cm_cell_t *cellp = NULL;
216 cm_volume_t * volp = NULL;
217 cm_vol_state_t *statep = NULL;
219 int free_svr_list = 0;
221 long timeUsed, timeLeft;
223 char addr[16]="unknown";
226 osi_Log2(afsd_logp, "cm_Analyze connp 0x%p, code 0x%x",
229 /* no locking required, since connp->serverp never changes after
231 dead_session = (userp->cellInfop == NULL);
233 serverp = connp->serverp;
235 /* Update callback pointer */
236 if (cbrp && serverp && errorCode == 0) {
238 if ( cbrp->serverp != serverp ) {
239 lock_ObtainWrite(&cm_serverLock);
240 cm_PutServerNoLock(cbrp->serverp);
241 cm_GetServerNoLock(serverp);
242 lock_ReleaseWrite(&cm_serverLock);
245 cm_GetServer(serverp);
247 lock_ObtainWrite(&cm_callbackLock);
248 cbrp->serverp = serverp;
249 lock_ReleaseWrite(&cm_callbackLock);
252 /* if timeout - check that it did not exceed the HardDead timeout
255 /* timeleft - get it from reqp the same way as cm_ConnByMServers does */
256 timeUsed = (GetTickCount() - reqp->startTime) / 1000;
257 timeLeft = HardDeadtimeout - timeUsed;
259 /* get a pointer to the cell */
261 if (cellp == NULL && serverp)
262 cellp = serverp->cellp;
263 if (cellp == NULL && serversp) {
264 struct cm_serverRef * refp;
265 for ( refp=serversp ; cellp == NULL && refp != NULL; refp=refp->next) {
266 if (refp->status == srv_deleted)
269 cellp = refp->server->cellp;
272 if (cellp == NULL && fidp) {
273 cellp = cm_FindCellByID(fidp->cell, 0);
277 if (errorCode == CM_ERROR_TIMEDOUT) {
278 if ( timeLeft > 5 ) {
280 cm_CheckServers(CM_FLAG_CHECKDOWNSERVERS, cellp);
285 else if (errorCode == UAEWOULDBLOCK || errorCode == EWOULDBLOCK ||
286 errorCode == UAEAGAIN || errorCode == EAGAIN) {
287 osi_Log0(afsd_logp, "cm_Analyze passed EWOULDBLOCK or EAGAIN.");
288 if ( timeLeft > 5 ) {
294 /* if there is nosuchvolume, then we have a situation in which a
295 * previously known volume no longer has a set of servers
296 * associated with it. Either the volume has moved or
297 * the volume has been deleted. Try to find a new server list
298 * until the timeout period expires.
300 else if (errorCode == CM_ERROR_NOSUCHVOLUME) {
301 osi_Log0(afsd_logp, "cm_Analyze passed CM_ERROR_NOSUCHVOLUME.");
303 * The VNOVOL or VL_NOENT error has already been translated
304 * to CM_ERROR_NOSUCHVOLUME. There is nothing for us to do.
308 else if (errorCode == CM_ERROR_ALLDOWN) {
309 osi_Log0(afsd_logp, "cm_Analyze passed CM_ERROR_ALLDOWN.");
310 /* Servers marked DOWN will be restored by the background daemon
311 * thread as they become available. The volume status is
312 * updated as the server state changes.
316 else if (errorCode == CM_ERROR_ALLOFFLINE) {
317 osi_Log0(afsd_logp, "cm_Analyze passed CM_ERROR_ALLOFFLINE.");
318 /* Volume instances marked offline will be restored by the
319 * background daemon thread as they become available
322 code = cm_FindVolumeByID(cellp, fidp->volume, userp, reqp,
323 CM_GETVOL_FLAG_NO_LRU_UPDATE,
329 /* cm_CheckOfflineVolume() resets the serverRef state */
330 if (cm_CheckOfflineVolume(volp, fidp->volume))
333 cm_UpdateVolumeStatus(volp, fidp->volume);
335 lock_ObtainRead(&cm_volumeLock);
337 lock_ReleaseRead(&cm_volumeLock);
342 else if (errorCode == CM_ERROR_ALLBUSY) {
343 /* Volumes that are busy cannot be determined to be non-busy
344 * without actually attempting to access them.
346 osi_Log0(afsd_logp, "cm_Analyze passed CM_ERROR_ALLBUSY.");
348 if (fidp) { /* File Server query */
349 code = cm_FindVolumeByID(cellp, fidp->volume, userp, reqp,
350 CM_GETVOL_FLAG_NO_LRU_UPDATE,
356 statep = cm_VolumeStateByID(volp, fidp->volume);
357 if (statep->state != vl_offline &&
358 statep->state != vl_busy &&
359 statep->state != vl_unknown) {
363 code = cm_GetServerList(fidp, userp, reqp, &serverspp);
365 serversp = *serverspp;
369 lock_ObtainWrite(&cm_serverLock);
370 for (tsrp = serversp; tsrp; tsrp=tsrp->next) {
371 if (tsrp->status == srv_deleted)
373 if (tsrp->status == srv_busy) {
374 tsrp->status = srv_not_busy;
377 lock_ReleaseWrite(&cm_serverLock);
379 cm_FreeServerList(serverspp, 0);
385 cm_UpdateVolumeStatus(volp, fidp->volume);
389 cm_UpdateVolumeStatus(volp, fidp->volume);
392 lock_ObtainRead(&cm_volumeLock);
394 lock_ReleaseRead(&cm_volumeLock);
397 } else { /* VL Server query */
402 lock_ObtainWrite(&cm_serverLock);
403 for (tsrp = serversp; tsrp; tsrp=tsrp->next) {
404 if (tsrp->status == srv_deleted)
406 if (tsrp->status == srv_busy) {
407 tsrp->status = srv_not_busy;
410 lock_ReleaseWrite(&cm_serverLock);
417 /* special codes: VBUSY and VRESTARTING */
418 else if (errorCode == VBUSY || errorCode == VRESTARTING) {
419 if (!serversp && fidp) {
420 code = cm_GetServerList(fidp, userp, reqp, &serverspp);
422 serversp = *serverspp;
426 lock_ObtainWrite(&cm_serverLock);
427 for (tsrp = serversp; tsrp; tsrp=tsrp->next) {
428 if (tsrp->status == srv_deleted)
430 if (tsrp->server == serverp && tsrp->status == srv_not_busy) {
431 tsrp->status = srv_busy;
432 if (fidp) { /* File Server query */
433 lock_ReleaseWrite(&cm_serverLock);
434 code = cm_FindVolumeByID(cellp, fidp->volume, userp, reqp,
435 CM_GETVOL_FLAG_NO_LRU_UPDATE,
438 statep = cm_VolumeStateByID(volp, fidp->volume);
439 lock_ObtainWrite(&cm_serverLock);
444 lock_ReleaseWrite(&cm_serverLock);
447 cm_UpdateVolumeStatus(volp, statep->ID);
448 lock_ObtainRead(&cm_volumeLock);
450 lock_ReleaseRead(&cm_volumeLock);
455 cm_FreeServerList(serverspp, 0);
463 /* special codes: missing volumes */
464 else if (errorCode == VNOVOL || errorCode == VMOVED || errorCode == VOFFLINE ||
465 errorCode == VSALVAGE || errorCode == VNOSERVICE || errorCode == VIO)
470 /* In case of timeout */
471 reqp->volumeError = errorCode;
473 switch ( errorCode ) {
475 msgID = MSG_SERVER_REPORTS_VNOVOL;
476 format = "Server %s reported volume %d as not attached (does not exist).";
479 msgID = MSG_SERVER_REPORTS_VMOVED;
480 format = "Server %s reported volume %d as moved.";
483 msgID = MSG_SERVER_REPORTS_VOFFLINE;
484 format = "Server %s reported volume %d as offline.";
487 msgID = MSG_SERVER_REPORTS_VSALVAGE;
488 format = "Server %s reported volume %d as needs salvage.";
491 msgID = MSG_SERVER_REPORTS_VNOSERVICE;
492 format = "Server %s reported volume %d as not in service.";
495 msgID = MSG_SERVER_REPORTS_VIO;
496 format = "Server %s reported volume %d as temporarily unaccessible.";
500 if (serverp && fidp) {
501 /* Log server being offline for this volume */
502 sprintf(addr, "%d.%d.%d.%d",
503 ((serverp->addr.sin_addr.s_addr & 0xff)),
504 ((serverp->addr.sin_addr.s_addr & 0xff00)>> 8),
505 ((serverp->addr.sin_addr.s_addr & 0xff0000)>> 16),
506 ((serverp->addr.sin_addr.s_addr & 0xff000000)>> 24));
508 osi_Log2(afsd_logp, format, osi_LogSaveString(afsd_logp,addr), fidp->volume);
509 LogEvent(EVENTLOG_WARNING_TYPE, msgID, addr, fidp->volume);
513 * Mark server offline for this volume or delete the volume
514 * from the server list if it was moved or is not present.
516 if (!serversp && fidp) {
517 code = cm_GetServerList(fidp, userp, reqp, &serverspp);
519 serversp = *serverspp;
524 lock_ObtainWrite(&cm_serverLock);
525 for (tsrp = serversp; tsrp; tsrp=tsrp->next) {
526 if (tsrp->status == srv_deleted)
529 sprintf(addr, "%d.%d.%d.%d",
530 ((tsrp->server->addr.sin_addr.s_addr & 0xff)),
531 ((tsrp->server->addr.sin_addr.s_addr & 0xff00)>> 8),
532 ((tsrp->server->addr.sin_addr.s_addr & 0xff0000)>> 16),
533 ((tsrp->server->addr.sin_addr.s_addr & 0xff000000)>> 24));
535 if (tsrp->server == serverp) {
537 if (errorCode == VMOVED || errorCode == VNOVOL) {
538 osi_Log2(afsd_logp, "volume %d not present on server %s",
539 fidp->volume, osi_LogSaveString(afsd_logp,addr));
540 tsrp->status = srv_deleted;
542 cm_RemoveVolumeFromServer(serverp, fidp->volume);
544 osi_Log2(afsd_logp, "volume %d instance on server %s marked offline",
545 fidp->volume, osi_LogSaveString(afsd_logp,addr));
546 tsrp->status = srv_offline;
550 osi_Log3(afsd_logp, "volume %d exists on server %s with status %u",
551 fidp->volume, osi_LogSaveString(afsd_logp,addr), tsrp->status);
554 lock_ReleaseWrite(&cm_serverLock);
556 /* Free the server list before cm_ForceUpdateVolume is called */
558 cm_FreeServerList(serverspp, 0);
564 if (fidp) { /* File Server query */
565 code = cm_FindVolumeByID(cellp, fidp->volume, userp, reqp,
566 CM_GETVOL_FLAG_NO_LRU_UPDATE,
569 statep = cm_VolumeStateByID(volp, fidp->volume);
571 if ((errorCode == VMOVED || errorCode == VNOVOL) &&
572 !(reqp->flags & CM_REQ_VOLUME_UPDATED))
574 code = cm_ForceUpdateVolume(fidp, userp, reqp);
576 timeLeft = 0; /* prevent a retry on failure */
578 reqp->flags |= CM_REQ_VOLUME_UPDATED;
579 osi_Log3(afsd_logp, "cm_Analyze called cm_ForceUpdateVolume cell %u vol %u code 0x%x",
580 fidp->cell, fidp->volume, code);
584 cm_UpdateVolumeStatus(volp, statep->ID);
585 osi_Log3(afsd_logp, "cm_Analyze NewVolState cell %u vol %u state %u",
586 fidp->cell, fidp->volume, statep->state);
590 lock_ObtainRead(&cm_volumeLock);
592 lock_ReleaseRead(&cm_volumeLock);
599 } else if ( errorCode == VNOVNODE ) {
602 osi_Log4(afsd_logp, "cm_Analyze passed VNOVNODE cell %u vol %u vn %u uniq %u.",
603 fidp->cell, fidp->volume, fidp->vnode, fidp->unique);
605 scp = cm_FindSCache(fidp);
607 cm_scache_t *pscp = NULL;
609 if (scp->fileType != CM_SCACHETYPE_DIRECTORY)
610 pscp = cm_FindSCacheParent(scp);
612 lock_ObtainWrite(&scp->rw);
613 lock_ObtainWrite(&cm_scacheLock);
614 cm_RemoveSCacheFromHashTable(scp);
615 lock_ReleaseWrite(&cm_scacheLock);
616 cm_LockMarkSCacheLost(scp);
617 scp->flags |= CM_SCACHEFLAG_DELETED;
618 lock_ReleaseWrite(&scp->rw);
619 cm_ReleaseSCache(scp);
622 if (cm_HaveCallback(pscp)) {
623 lock_ObtainWrite(&pscp->rw);
624 cm_DiscardSCache(pscp);
625 lock_ReleaseWrite(&pscp->rw);
627 cm_ReleaseSCache(pscp);
631 osi_Log0(afsd_logp, "cm_Analyze passed VNOVNODE unknown fid.");
636 else if (errorCode == RX_CALL_TIMEOUT) {
637 /* RPC took longer than hardDeadTime or the server
638 * reported idle for longer than idleDeadTime
639 * don't mark server as down but don't retry
640 * this is to prevent the SMB session from timing out
641 * In addition, we log an event to the event log
645 sprintf(addr, "%d.%d.%d.%d",
646 ((serverp->addr.sin_addr.s_addr & 0xff)),
647 ((serverp->addr.sin_addr.s_addr & 0xff00)>> 8),
648 ((serverp->addr.sin_addr.s_addr & 0xff0000)>> 16),
649 ((serverp->addr.sin_addr.s_addr & 0xff000000)>> 24));
651 LogEvent(EVENTLOG_WARNING_TYPE, MSG_RX_HARD_DEAD_TIME_EXCEEDED, addr);
652 osi_Log1(afsd_logp, "cm_Analyze: hardDeadTime or idleDeadtime exceeded addr[%s]",
653 osi_LogSaveString(afsd_logp,addr));
654 reqp->tokenIdleErrorServp = serverp;
658 if (!fidp) { /* vldb */
661 cm_volume_t *volp = cm_GetVolumeByFID(fidp);
663 if (fidp->volume == cm_GetROVolumeID(volp))
671 else if (errorCode >= -64 && errorCode < 0) {
672 /* mark server as down */
674 sprintf(addr, "%d.%d.%d.%d",
675 ((serverp->addr.sin_addr.s_addr & 0xff)),
676 ((serverp->addr.sin_addr.s_addr & 0xff00)>> 8),
677 ((serverp->addr.sin_addr.s_addr & 0xff0000)>> 16),
678 ((serverp->addr.sin_addr.s_addr & 0xff000000)>> 24));
680 if (errorCode == RX_CALL_DEAD)
681 osi_Log2(afsd_logp, "cm_Analyze: Rx Call Dead addr[%s] forcedNew[%s]",
682 osi_LogSaveString(afsd_logp,addr),
683 (reqp->flags & CM_REQ_NEW_CONN_FORCED ? "yes" : "no"));
685 osi_Log3(afsd_logp, "cm_Analyze: Rx Misc Error[%d] addr[%s] forcedNew[%s]",
687 osi_LogSaveString(afsd_logp,addr),
688 (reqp->flags & CM_REQ_NEW_CONN_FORCED ? "yes" : "no"));
691 lock_ObtainMutex(&serverp->mx);
692 if (errorCode == RX_CALL_DEAD &&
693 (reqp->flags & CM_REQ_NEW_CONN_FORCED)) {
694 if (!(serverp->flags & CM_SERVERFLAG_DOWN)) {
695 serverp->flags |= CM_SERVERFLAG_DOWN;
696 serverp->downTime = time(NULL);
699 if (reqp->flags & CM_REQ_NEW_CONN_FORCED) {
700 reqp->tokenIdleErrorServp = serverp;
701 reqp->tokenError = errorCode;
703 reqp->flags |= CM_REQ_NEW_CONN_FORCED;
707 lock_ReleaseMutex(&serverp->mx);
708 cm_ForceNewConnections(serverp);
713 else if (errorCode == RXKADEXPIRED) {
714 osi_Log1(afsd_logp, "cm_Analyze: rxkad error code 0x%x (RXKADEXPIRED)",
717 lock_ObtainMutex(&userp->mx);
718 ucellp = cm_GetUCell(userp, serverp->cellp);
719 if (ucellp->ticketp) {
720 free(ucellp->ticketp);
721 ucellp->ticketp = NULL;
723 ucellp->flags &= ~CM_UCELLFLAG_RXKAD;
725 lock_ReleaseMutex(&userp->mx);
729 } else if (errorCode >= ERROR_TABLE_BASE_RXK && errorCode < ERROR_TABLE_BASE_RXK + 256) {
730 char * s = "unknown error";
731 switch ( errorCode ) {
732 case RXKADINCONSISTENCY: s = "RXKADINCONSISTENCY"; break;
733 case RXKADPACKETSHORT : s = "RXKADPACKETSHORT"; break;
734 case RXKADLEVELFAIL : s = "RXKADLEVELFAIL"; break;
735 case RXKADTICKETLEN : s = "RXKADTICKETLEN"; break;
736 case RXKADOUTOFSEQUENCE: s = "RXKADOUTOFSEQUENCE"; break;
737 case RXKADNOAUTH : s = "RXKADNOAUTH"; break;
738 case RXKADBADKEY : s = "RXKADBADKEY"; break;
739 case RXKADBADTICKET : s = "RXKADBADTICKET"; break;
740 case RXKADUNKNOWNKEY : s = "RXKADUNKNOWNKEY"; break;
741 case RXKADEXPIRED : s = "RXKADEXPIRED"; break;
742 case RXKADSEALEDINCON : s = "RXKADSEALEDINCON"; break;
743 case RXKADDATALEN : s = "RXKADDATALEN"; break;
744 case RXKADILLEGALLEVEL : s = "RXKADILLEGALLEVEL"; break;
746 osi_Log2(afsd_logp, "cm_Analyze: rxkad error code 0x%x (%s)",
750 reqp->tokenIdleErrorServp = serverp;
751 reqp->tokenError = errorCode;
754 } else if (errorCode >= ERROR_TABLE_BASE_U && errorCode < ERROR_TABLE_BASE_U + 256) {
756 * We received a ubik error. its possible that the server we are
757 * communicating with has a corrupted database or is partitioned
758 * from the rest of the servers and another server might be able
759 * to answer our query. Therefore, we will retry the request
760 * and force the use of another server.
763 reqp->tokenIdleErrorServp = serverp;
764 reqp->tokenError = errorCode;
767 } else if (errorCode == VICECONNBAD || errorCode == VICETOKENDEAD) {
768 cm_ForceNewConnections(serverp);
773 char * s = "unknown error";
774 switch ( errorCode ) {
775 case VSALVAGE : s = "VSALVAGE"; break;
776 case VNOVNODE : s = "VNOVNODE"; break;
777 case VNOVOL : s = "VNOVOL"; break;
778 case VVOLEXISTS : s = "VVOLEXISTS"; break;
779 case VNOSERVICE : s = "VNOSERVICE"; break;
780 case VOFFLINE : s = "VOFFLINE"; break;
781 case VONLINE : s = "VONLINE"; break;
782 case VDISKFULL : s = "VDISKFULL"; break;
783 case VOVERQUOTA : s = "VOVERQUOTA"; break;
784 case VBUSY : s = "VBUSY"; break;
785 case VMOVED : s = "VMOVED"; break;
786 case VIO : s = "VIO"; break;
787 case VRESTRICTED : s = "VRESTRICTED"; break;
788 case VRESTARTING : s = "VRESTARTING"; break;
789 case VREADONLY : s = "VREADONLY"; break;
790 case EAGAIN : s = "EAGAIN"; break;
791 case UAEAGAIN : s = "UAEAGAIN"; break;
792 case EINVAL : s = "EINVAL"; break;
793 case UAEINVAL : s = "UAEINVAL"; break;
794 case EACCES : s = "EACCES"; break;
795 case UAEACCES : s = "UAEACCES"; break;
796 case ENOENT : s = "ENOENT"; break;
797 case UAENOENT : s = "UAENOENT"; break;
798 case EEXIST : s = "EEXIST"; break;
799 case UAEEXIST : s = "UAEEXIST"; break;
800 case VICECONNBAD : s = "VICECONNBAD"; break;
801 case VICETOKENDEAD : s = "VICETOKENDEAD"; break;
802 case WSAEWOULDBLOCK : s = "WSAEWOULDBLOCK"; break;
803 case UAEWOULDBLOCK : s = "UAEWOULDBLOCK"; break;
804 case VL_IDEXIST : s = "VL_IDEXIST"; break;
805 case VL_IO : s = "VL_IO"; break;
806 case VL_NAMEEXIST : s = "VL_NAMEEXIST"; break;
807 case VL_CREATEFAIL : s = "VL_CREATEFAIL"; break;
808 case VL_NOENT : s = "VL_NOENT"; break;
809 case VL_EMPTY : s = "VL_EMPTY"; break;
810 case VL_ENTDELETED : s = "VL_ENTDELETED"; break;
811 case VL_BADNAME : s = "VL_BADNAME"; break;
812 case VL_BADINDEX : s = "VL_BADINDEX"; break;
813 case VL_BADVOLTYPE : s = "VL_BADVOLTYPE"; break;
814 case VL_BADSERVER : s = "VL_BADSERVER"; break;
815 case VL_BADPARTITION : s = "VL_BADPARTITION"; break;
816 case VL_REPSFULL : s = "VL_REPSFULL"; break;
817 case VL_NOREPSERVER : s = "VL_NOREPSERVER"; break;
818 case VL_DUPREPSERVER : s = "VL_DUPREPSERVER"; break;
819 case VL_RWNOTFOUND : s = "VL_RWNOTFOUND"; break;
820 case VL_BADREFCOUNT : s = "VL_BADREFCOUNT"; break;
821 case VL_SIZEEXCEEDED : s = "VL_SIZEEXCEEDED"; break;
822 case VL_BADENTRY : s = "VL_BADENTRY"; break;
823 case VL_BADVOLIDBUMP : s = "VL_BADVOLIDBUMP"; break;
824 case VL_IDALREADYHASHED: s = "VL_IDALREADYHASHED"; break;
825 case VL_ENTRYLOCKED : s = "VL_ENTRYLOCKED"; break;
826 case VL_BADVOLOPER : s = "VL_BADVOLOPER"; break;
827 case VL_BADRELLOCKTYPE : s = "VL_BADRELLOCKTYPE"; break;
828 case VL_RERELEASE : s = "VL_RERELEASE"; break;
829 case VL_BADSERVERFLAG : s = "VL_BADSERVERFLAG"; break;
830 case VL_PERM : s = "VL_PERM"; break;
831 case VL_NOMEM : s = "VL_NOMEM"; break;
832 case VL_BADVERSION : s = "VL_BADVERSION"; break;
833 case VL_INDEXERANGE : s = "VL_INDEXERANGE"; break;
834 case VL_MULTIPADDR : s = "VL_MULTIPADDR"; break;
835 case VL_BADMASK : s = "VL_BADMASK"; break;
836 case CM_ERROR_NOSUCHCELL : s = "CM_ERROR_NOSUCHCELL"; break;
837 case CM_ERROR_NOSUCHVOLUME : s = "CM_ERROR_NOSUCHVOLUME"; break;
838 case CM_ERROR_TIMEDOUT : s = "CM_ERROR_TIMEDOUT"; break;
839 case CM_ERROR_RETRY : s = "CM_ERROR_RETRY"; break;
840 case CM_ERROR_NOACCESS : s = "CM_ERROR_NOACCESS"; break;
841 case CM_ERROR_NOSUCHFILE : s = "CM_ERROR_NOSUCHFILE"; break;
842 case CM_ERROR_STOPNOW : s = "CM_ERROR_STOPNOW"; break;
843 case CM_ERROR_TOOBIG : s = "CM_ERROR_TOOBIG"; break;
844 case CM_ERROR_INVAL : s = "CM_ERROR_INVAL"; break;
845 case CM_ERROR_BADFD : s = "CM_ERROR_BADFD"; break;
846 case CM_ERROR_BADFDOP : s = "CM_ERROR_BADFDOP"; break;
847 case CM_ERROR_EXISTS : s = "CM_ERROR_EXISTS"; break;
848 case CM_ERROR_CROSSDEVLINK : s = "CM_ERROR_CROSSDEVLINK"; break;
849 case CM_ERROR_BADOP : s = "CM_ERROR_BADOP"; break;
850 case CM_ERROR_BADPASSWORD : s = "CM_ERROR_BADPASSWORD"; break;
851 case CM_ERROR_NOTDIR : s = "CM_ERROR_NOTDIR"; break;
852 case CM_ERROR_ISDIR : s = "CM_ERROR_ISDIR"; break;
853 case CM_ERROR_READONLY : s = "CM_ERROR_READONLY"; break;
854 case CM_ERROR_WOULDBLOCK : s = "CM_ERROR_WOULDBLOCK"; break;
855 case CM_ERROR_QUOTA : s = "CM_ERROR_QUOTA"; break;
856 case CM_ERROR_SPACE : s = "CM_ERROR_SPACE"; break;
857 case CM_ERROR_BADSHARENAME : s = "CM_ERROR_BADSHARENAME"; break;
858 case CM_ERROR_BADTID : s = "CM_ERROR_BADTID"; break;
859 case CM_ERROR_UNKNOWN : s = "CM_ERROR_UNKNOWN"; break;
860 case CM_ERROR_NOMORETOKENS : s = "CM_ERROR_NOMORETOKENS"; break;
861 case CM_ERROR_NOTEMPTY : s = "CM_ERROR_NOTEMPTY"; break;
862 case CM_ERROR_USESTD : s = "CM_ERROR_USESTD"; break;
863 case CM_ERROR_REMOTECONN : s = "CM_ERROR_REMOTECONN"; break;
864 case CM_ERROR_ATSYS : s = "CM_ERROR_ATSYS"; break;
865 case CM_ERROR_NOSUCHPATH : s = "CM_ERROR_NOSUCHPATH"; break;
866 case CM_ERROR_CLOCKSKEW : s = "CM_ERROR_CLOCKSKEW"; break;
867 case CM_ERROR_BADSMB : s = "CM_ERROR_BADSMB"; break;
868 case CM_ERROR_ALLBUSY : s = "CM_ERROR_ALLBUSY"; break;
869 case CM_ERROR_NOFILES : s = "CM_ERROR_NOFILES"; break;
870 case CM_ERROR_PARTIALWRITE : s = "CM_ERROR_PARTIALWRITE"; break;
871 case CM_ERROR_NOIPC : s = "CM_ERROR_NOIPC"; break;
872 case CM_ERROR_BADNTFILENAME : s = "CM_ERROR_BADNTFILENAME"; break;
873 case CM_ERROR_BUFFERTOOSMALL : s = "CM_ERROR_BUFFERTOOSMALL"; break;
874 case CM_ERROR_RENAME_IDENTICAL : s = "CM_ERROR_RENAME_IDENTICAL"; break;
875 case CM_ERROR_ALLOFFLINE : s = "CM_ERROR_ALLOFFLINE"; break;
876 case CM_ERROR_AMBIGUOUS_FILENAME: s = "CM_ERROR_AMBIGUOUS_FILENAME"; break;
877 case CM_ERROR_BADLOGONTYPE : s = "CM_ERROR_BADLOGONTYPE"; break;
878 case CM_ERROR_GSSCONTINUE : s = "CM_ERROR_GSSCONTINUE"; break;
879 case CM_ERROR_TIDIPC : s = "CM_ERROR_TIDIPC"; break;
880 case CM_ERROR_TOO_MANY_SYMLINKS : s = "CM_ERROR_TOO_MANY_SYMLINKS"; break;
881 case CM_ERROR_PATH_NOT_COVERED : s = "CM_ERROR_PATH_NOT_COVERED"; break;
882 case CM_ERROR_LOCK_CONFLICT : s = "CM_ERROR_LOCK_CONFLICT"; break;
883 case CM_ERROR_SHARING_VIOLATION : s = "CM_ERROR_SHARING_VIOLATION"; break;
884 case CM_ERROR_ALLDOWN : s = "CM_ERROR_ALLDOWN"; break;
885 case CM_ERROR_TOOFEWBUFS : s = "CM_ERROR_TOOFEWBUFS"; break;
886 case CM_ERROR_TOOMANYBUFS : s = "CM_ERROR_TOOMANYBUFS"; break;
888 osi_Log2(afsd_logp, "cm_Analyze: ignoring error code 0x%x (%s)",
894 /* If not allowed to retry, don't */
895 if (!forcing_new && (reqp->flags & CM_REQ_NORETRY))
897 else if (retry && dead_session)
901 /* drop this on the way out */
906 * clear the volume updated flag if we succeed.
907 * this way the flag will not prevent a subsequent volume
908 * from being updated if necessary.
912 reqp->flags &= ~CM_REQ_VOLUME_UPDATED;
915 /* retry until we fail to find a connection */
919 long cm_ConnByMServers(cm_serverRef_t *serversp, cm_user_t *usersp,
920 cm_req_t *reqp, cm_conn_t **connpp)
923 cm_serverRef_t *tsrp;
926 int someBusy = 0, someOffline = 0, allOffline = 1, allBusy = 1, allDown = 1;
927 #ifdef SET_RX_TIMEOUTS_TO_TIMELEFT
928 long timeUsed, timeLeft, hardTimeLeft;
932 if (serversp == NULL) {
933 osi_Log1(afsd_logp, "cm_ConnByMServers returning 0x%x", CM_ERROR_ALLDOWN);
934 return CM_ERROR_ALLDOWN;
937 #ifdef SET_RX_TIMEOUTS_TO_TIMELEFT
938 timeUsed = (GetTickCount() - reqp->startTime) / 1000;
940 /* leave 5 seconds margin of safety */
941 timeLeft = ConnDeadtimeout - timeUsed - 5;
942 hardTimeLeft = HardDeadtimeout - timeUsed - 5;
945 lock_ObtainRead(&cm_serverLock);
946 for (tsrp = serversp; tsrp; tsrp=tsrp->next) {
947 if (tsrp->status == srv_deleted)
951 if (reqp->tokenIdleErrorServp) {
953 * search the list until we find the server
954 * that failed last time. When we find it
955 * clear the error, skip it and try the one
958 if (tsp == reqp->tokenIdleErrorServp)
959 reqp->tokenIdleErrorServp = NULL;
963 cm_GetServerNoLock(tsp);
964 lock_ReleaseRead(&cm_serverLock);
965 if (!(tsp->flags & CM_SERVERFLAG_DOWN)) {
967 if (tsrp->status == srv_busy) {
970 } else if (tsrp->status == srv_offline) {
976 code = cm_ConnByServer(tsp, usersp, connpp);
977 if (code == 0) { /* cm_CBS only returns 0 */
979 #ifdef SET_RX_TIMEOUTS_TO_TIMELEFT
980 /* Set RPC timeout */
981 if (timeLeft > ConnDeadtimeout)
982 timeLeft = ConnDeadtimeout;
984 if (hardTimeLeft > HardDeadtimeout)
985 hardTimeLeft = HardDeadtimeout;
987 lock_ObtainMutex(&(*connpp)->mx);
988 rx_SetConnDeadTime((*connpp)->rxconnp, timeLeft);
989 rx_SetConnHardDeadTime((*connpp)->rxconnp, (u_short) hardTimeLeft);
990 lock_ReleaseMutex(&(*connpp)->mx);
995 /* therefore, this code is never executed */
1000 lock_ObtainRead(&cm_serverLock);
1001 cm_PutServerNoLock(tsp);
1004 lock_ReleaseRead(&cm_serverLock);
1006 if (firstError == 0) {
1008 firstError = (reqp->tokenError ? reqp->tokenError :
1009 (reqp->idleError ? RX_CALL_TIMEOUT : CM_ERROR_ALLDOWN));
1011 firstError = CM_ERROR_ALLBUSY;
1012 else if (allOffline || (someBusy && someOffline))
1013 firstError = CM_ERROR_ALLOFFLINE;
1015 osi_Log0(afsd_logp, "cm_ConnByMServers returning impossible error TIMEDOUT");
1016 firstError = CM_ERROR_TIMEDOUT;
1020 osi_Log1(afsd_logp, "cm_ConnByMServers returning 0x%x", firstError);
1024 /* called with a held server to GC all bad connections hanging off of the server */
1025 void cm_GCConnections(cm_server_t *serverp)
1031 lock_ObtainWrite(&cm_connLock);
1032 lcpp = &serverp->connsp;
1033 for (tcp = *lcpp; tcp; tcp = *lcpp) {
1035 if (userp && tcp->refCount == 0 && (userp->vcRefs == 0)) {
1036 /* do the deletion of this guy */
1037 cm_PutServer(tcp->serverp);
1038 cm_ReleaseUser(userp);
1040 rx_DestroyConnection(tcp->rxconnp);
1041 lock_FinalizeMutex(&tcp->mx);
1045 /* just advance to the next */
1049 lock_ReleaseWrite(&cm_connLock);
1052 static void cm_NewRXConnection(cm_conn_t *tcp, cm_ucell_t *ucellp,
1053 cm_server_t *serverp)
1055 unsigned short port;
1058 struct rx_securityClass *secObjp;
1060 port = serverp->addr.sin_port;
1061 switch (serverp->type) {
1062 case CM_SERVER_VLDB:
1067 case CM_SERVER_FILE:
1073 osi_panic("unknown server type", __FILE__, __LINE__);
1076 if (ucellp->flags & CM_UCELLFLAG_RXKAD) {
1080 tcp->cryptlevel = rxkad_clear;
1083 tcp->cryptlevel = rxkad_auth;
1086 tcp->cryptlevel = rxkad_crypt;
1088 secObjp = rxkad_NewClientSecurityObject(tcp->cryptlevel,
1089 &ucellp->sessionKey, ucellp->kvno,
1090 ucellp->ticketLen, ucellp->ticketp);
1094 tcp->cryptlevel = rxkad_clear;
1095 secObjp = rxnull_NewClientSecurityObject();
1097 osi_assertx(secObjp != NULL, "null rx_securityClass");
1098 tcp->rxconnp = rx_NewConnection(serverp->addr.sin_addr.s_addr,
1103 rx_SetConnDeadTime(tcp->rxconnp, ConnDeadtimeout);
1104 rx_SetConnHardDeadTime(tcp->rxconnp, HardDeadtimeout);
1105 rx_SetConnIdleDeadTime(tcp->rxconnp, IdleDeadtimeout);
1106 tcp->ucgen = ucellp->gen;
1108 rxs_Release(secObjp); /* Decrement the initial refCount */
1111 long cm_ConnByServer(cm_server_t *serverp, cm_user_t *userp, cm_conn_t **connpp)
1118 if (cm_anonvldb && serverp->type == CM_SERVER_VLDB)
1119 userp = cm_rootUserp;
1121 lock_ObtainMutex(&userp->mx);
1122 lock_ObtainRead(&cm_connLock);
1123 for (tcp = serverp->connsp; tcp; tcp=tcp->nextp) {
1124 if (tcp->userp == userp)
1128 /* find ucell structure */
1129 ucellp = cm_GetUCell(userp, serverp->cellp);
1131 lock_ConvertRToW(&cm_connLock);
1132 for (tcp = serverp->connsp; tcp; tcp=tcp->nextp) {
1133 if (tcp->userp == userp)
1137 lock_ReleaseWrite(&cm_connLock);
1140 cm_GetServer(serverp);
1141 tcp = malloc(sizeof(*tcp));
1142 memset(tcp, 0, sizeof(*tcp));
1143 tcp->nextp = serverp->connsp;
1144 serverp->connsp = tcp;
1147 lock_InitializeMutex(&tcp->mx, "cm_conn_t mutex", LOCK_HIERARCHY_CONN);
1148 lock_ObtainMutex(&tcp->mx);
1149 tcp->serverp = serverp;
1150 tcp->cryptlevel = rxkad_clear;
1151 cm_NewRXConnection(tcp, ucellp, serverp);
1153 lock_ReleaseMutex(&tcp->mx);
1154 lock_ReleaseWrite(&cm_connLock);
1156 lock_ReleaseRead(&cm_connLock);
1158 InterlockedIncrement(&tcp->refCount);
1160 lock_ObtainMutex(&tcp->mx);
1161 if ((tcp->flags & CM_CONN_FLAG_FORCE_NEW) ||
1162 (tcp->ucgen < ucellp->gen) ||
1163 (tcp->cryptlevel != (ucellp->flags & CM_UCELLFLAG_RXKAD ? (cryptall == 1 ? rxkad_crypt : (cryptall == 2 ? rxkad_auth : rxkad_clear)) : rxkad_clear)))
1165 if (tcp->ucgen < ucellp->gen)
1166 osi_Log0(afsd_logp, "cm_ConnByServer replace connection due to token update");
1168 osi_Log0(afsd_logp, "cm_ConnByServer replace connection due to crypt change");
1169 tcp->flags &= ~CM_CONN_FLAG_FORCE_NEW;
1170 rx_DestroyConnection(tcp->rxconnp);
1171 cm_NewRXConnection(tcp, ucellp, serverp);
1173 lock_ReleaseMutex(&tcp->mx);
1175 lock_ReleaseMutex(&userp->mx);
1177 /* return this pointer to our caller */
1178 osi_Log1(afsd_logp, "cm_ConnByServer returning conn 0x%p", tcp);
1184 long cm_ServerAvailable(struct cm_fid *fidp, struct cm_user *userp)
1188 cm_serverRef_t **serverspp;
1189 cm_serverRef_t *tsrp;
1191 int someBusy = 0, someOffline = 0, allOffline = 1, allBusy = 1, allDown = 1;
1195 code = cm_GetServerList(fidp, userp, &req, &serverspp);
1199 lock_ObtainRead(&cm_serverLock);
1200 for (tsrp = *serverspp; tsrp; tsrp=tsrp->next) {
1201 if (tsrp->status == srv_deleted)
1204 if (!(tsp->flags & CM_SERVERFLAG_DOWN)) {
1206 if (tsrp->status == srv_busy) {
1209 } else if (tsrp->status == srv_offline) {
1218 lock_ReleaseRead(&cm_serverLock);
1219 cm_FreeServerList(serverspp, 0);
1225 else if (allOffline || (someBusy && someOffline))
1232 * The returned cm_conn_t ** object is released in the subsequent call
1235 long cm_ConnFromFID(struct cm_fid *fidp, struct cm_user *userp, cm_req_t *reqp,
1239 cm_serverRef_t **serverspp;
1243 code = cm_GetServerList(fidp, userp, reqp, &serverspp);
1248 code = cm_ConnByMServers(*serverspp, userp, reqp, connpp);
1249 cm_FreeServerList(serverspp, 0);
1254 long cm_ConnFromVolume(struct cm_volume *volp, unsigned long volid, struct cm_user *userp, cm_req_t *reqp,
1258 cm_serverRef_t **serverspp;
1262 serverspp = cm_GetVolServers(volp, volid, userp, reqp);
1264 code = cm_ConnByMServers(*serverspp, userp, reqp, connpp);
1265 cm_FreeServerList(serverspp, 0);
1270 extern struct rx_connection *
1271 cm_GetRxConn(cm_conn_t *connp)
1273 struct rx_connection * rxconnp;
1274 lock_ObtainMutex(&connp->mx);
1275 rxconnp = connp->rxconnp;
1276 rx_GetConnection(rxconnp);
1277 lock_ReleaseMutex(&connp->mx);
1281 void cm_ForceNewConnections(cm_server_t *serverp)
1285 lock_ObtainWrite(&cm_connLock);
1286 for (tcp = serverp->connsp; tcp; tcp=tcp->nextp) {
1287 lock_ObtainMutex(&tcp->mx);
1288 tcp->flags |= CM_CONN_FLAG_FORCE_NEW;
1289 lock_ReleaseMutex(&tcp->mx);
1291 lock_ReleaseWrite(&cm_connLock);