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 <WINNT/afsreg.h>
23 osi_rwlock_t cm_connLock;
25 DWORD RDRtimeout = CM_CONN_DEFAULTRDRTIMEOUT;
26 unsigned short ConnDeadtimeout = CM_CONN_CONNDEADTIME;
27 unsigned short HardDeadtimeout = CM_CONN_HARDDEADTIME;
29 #define LANMAN_WKS_PARAM_KEY "SYSTEM\\CurrentControlSet\\Services\\lanmanworkstation\\parameters"
30 #define LANMAN_WKS_SESSION_TIMEOUT "SessTimeout"
32 afs_int32 cryptall = 0;
34 void cm_PutConn(cm_conn_t *connp)
36 lock_ObtainWrite(&cm_connLock);
37 osi_assert(connp->refCount-- > 0);
38 lock_ReleaseWrite(&cm_connLock);
41 void cm_InitConn(void)
43 static osi_once_t once;
49 if (osi_Once(&once)) {
50 lock_InitializeRWLock(&cm_connLock, "connection global lock");
52 /* keisa - read timeout value for lanmanworkstation service.
54 * http://support.microsoft.com:80/support/kb/articles/Q102/0/67.asp&NoWebContent=1
55 * the SessTimeout is a minimum timeout not a maximum timeout. Therefore,
56 * I believe that the default should not be short. Instead, we should wait until
57 * RX times out before reporting a timeout to the SMB client.
59 code = RegOpenKeyEx(HKEY_LOCAL_MACHINE, LANMAN_WKS_PARAM_KEY,
60 0, KEY_QUERY_VALUE, &parmKey);
61 if (code == ERROR_SUCCESS)
63 dummyLen = sizeof(DWORD);
64 code = RegQueryValueEx(parmKey, LANMAN_WKS_SESSION_TIMEOUT, NULL, NULL,
65 (BYTE *) &dwValue, &dummyLen);
66 if (code == ERROR_SUCCESS)
71 code = RegOpenKeyEx(HKEY_LOCAL_MACHINE, AFSREG_CLT_SVC_PARAM_SUBKEY,
72 0, KEY_QUERY_VALUE, &parmKey);
73 if (code == ERROR_SUCCESS) {
74 dummyLen = sizeof(DWORD);
75 code = RegQueryValueEx(parmKey, "ConnDeadTimeout", NULL, NULL,
76 (BYTE *) &dwValue, &dummyLen);
77 if (code == ERROR_SUCCESS)
78 ConnDeadtimeout = (unsigned short)dwValue;
80 dummyLen = sizeof(DWORD);
81 code = RegQueryValueEx(parmKey, "HardDeadTimeout", NULL, NULL,
82 (BYTE *) &dwValue, &dummyLen);
83 if (code == ERROR_SUCCESS)
84 HardDeadtimeout = (unsigned short)dwValue;
85 afsi_log("HardDeadTimeout is %d", HardDeadtimeout);
89 afsi_log("lanmanworkstation : SessTimeout %u", RDRtimeout);
90 if (ConnDeadtimeout == 0)
91 ConnDeadtimeout = (unsigned short) (RDRtimeout / 2);
92 afsi_log("ConnDeadTimeout is %d", ConnDeadtimeout);
93 if (HardDeadtimeout == 0)
94 HardDeadtimeout = (unsigned short) RDRtimeout;
95 afsi_log("HardDeadTimeout is %d", HardDeadtimeout);
101 void cm_InitReq(cm_req_t *reqp)
103 memset((char *)reqp, 0, sizeof(cm_req_t));
104 reqp->startTime = GetTickCount();
107 static long cm_GetServerList(struct cm_fid *fidp, struct cm_user *userp,
108 struct cm_req *reqp, cm_serverRef_t ***serversppp)
111 cm_volume_t *volp = NULL;
112 cm_cell_t *cellp = NULL;
116 return CM_ERROR_INVAL;
119 cellp = cm_FindCellByID(fidp->cell);
121 return CM_ERROR_NOSUCHCELL;
123 code = cm_GetVolumeByID(cellp, fidp->volume, userp, reqp, CM_GETVOL_FLAG_CREATE, &volp);
127 *serversppp = cm_GetVolServers(volp, fidp->volume);
134 * Analyze the error return from an RPC. Determine whether or not to retry,
135 * and if we're going to retry, determine whether failover is appropriate,
136 * and whether timed backoff is appropriate.
138 * If the error code is from cm_ConnFromFID() or friends, it will be a CM_ERROR code.
139 * Otherwise it will be an RPC code. This may be a UNIX code (e.g. EDQUOT), or
140 * it may be an RX code, or it may be a special code (e.g. VNOVOL), or it may
141 * be a security code (e.g. RXKADEXPIRED).
143 * If the error code is from cm_ConnFromFID() or friends, connp will be NULL.
145 * For VLDB calls, fidp will be NULL.
147 * volSyncp and/or cbrp may also be NULL.
150 cm_Analyze(cm_conn_t *connp, cm_user_t *userp, cm_req_t *reqp,
152 AFSVolSync *volSyncp,
153 cm_serverRef_t * serversp,
154 cm_callbackRequest_t *cbrp, long errorCode)
156 cm_server_t *serverp = NULL;
157 cm_serverRef_t **serverspp = NULL;
158 cm_serverRef_t *tsrp;
159 cm_cell_t *cellp = NULL;
161 cm_volume_t * volp = NULL;
162 cm_vol_state_t *statep = NULL;
164 int free_svr_list = 0;
166 long timeUsed, timeLeft;
171 osi_Log2(afsd_logp, "cm_Analyze connp 0x%p, code 0x%x",
174 /* no locking required, since connp->serverp never changes after
176 dead_session = (userp->cellInfop == NULL);
178 serverp = connp->serverp;
180 /* Update callback pointer */
181 if (cbrp && serverp && errorCode == 0) {
183 if ( cbrp->serverp != serverp ) {
184 lock_ObtainWrite(&cm_serverLock);
185 cm_PutServerNoLock(cbrp->serverp);
186 cm_GetServerNoLock(serverp);
187 lock_ReleaseWrite(&cm_serverLock);
190 cm_GetServer(serverp);
192 lock_ObtainWrite(&cm_callbackLock);
193 cbrp->serverp = serverp;
194 lock_ReleaseWrite(&cm_callbackLock);
197 /* if timeout - check that it did not exceed the HardDead timeout
200 /* timeleft - get if from reqp the same way as cmXonnByMServers does */
201 timeUsed = (GetTickCount() - reqp->startTime) / 1000;
203 /* leave 5 seconds margin for sleep */
204 timeLeft = HardDeadtimeout - timeUsed;
206 /* get a pointer to the cell */
208 if (cellp == NULL && serverp)
209 cellp = serverp->cellp;
210 if (cellp == NULL && serversp) {
211 struct cm_serverRef * refp;
212 for ( refp=serversp ; cellp == NULL && refp != NULL; refp=refp->next) {
214 cellp = refp->server->cellp;
217 if (cellp == NULL && fidp) {
218 cellp = cm_FindCellByID(fidp->cell);
222 if (errorCode == CM_ERROR_TIMEDOUT) {
225 cm_CheckServers(CM_FLAG_CHECKDOWNSERVERS, cellp);
230 else if (errorCode == UAEWOULDBLOCK || errorCode == EWOULDBLOCK ||
231 errorCode == UAEAGAIN || errorCode == EAGAIN) {
238 /* if there is nosuchvolume, then we have a situation in which a
239 * previously known volume no longer has a set of servers
240 * associated with it. Either the volume has moved or
241 * the volume has been deleted. Try to find a new server list
242 * until the timeout period expires.
244 else if (errorCode == CM_ERROR_NOSUCHVOLUME) {
245 osi_Log0(afsd_logp, "cm_Analyze passed CM_ERROR_NOSUCHVOLUME.");
251 if (fidp != NULL) /* Not a VLDB call */
252 cm_ForceUpdateVolume(fidp, userp, reqp);
256 else if (errorCode == CM_ERROR_ALLDOWN) {
257 osi_Log0(afsd_logp, "cm_Analyze passed CM_ERROR_ALLDOWN.");
258 /* Servers marked DOWN will be restored by the background daemon
259 * thread as they become available.
263 else if (errorCode == CM_ERROR_ALLOFFLINE) {
264 osi_Log0(afsd_logp, "cm_Analyze passed CM_ERROR_ALLOFFLINE.");
265 /* Volume instances marked offline will be restored by the
266 * background daemon thread as they become available
268 if (timeLeft > 7 && fidp) {
270 cm_vol_state_t *statep;
274 code = cm_GetVolumeByID(cellp, fidp->volume, userp, reqp,
275 CM_GETVOL_FLAG_NO_LRU_UPDATE,
278 if (fidp->volume == volp->rw.ID)
280 else if (fidp->volume == volp->ro.ID)
282 else if (fidp->volume == volp->bk.ID)
285 if (statep->state != vl_offline) {
288 if (cm_CheckOfflineVolume(volp, statep->ID))
296 else if (errorCode == CM_ERROR_ALLBUSY) {
297 /* Volumes that are busy cannot be determined to be non-busy
298 * without actually attempting to access them.
300 osi_Log0(afsd_logp, "cm_Analyze passed CM_ERROR_ALLBUSY.");
305 if (fidp) { /* File Server query */
306 code = cm_GetVolumeByID(cellp, fidp->volume, userp, reqp,
307 CM_GETVOL_FLAG_NO_LRU_UPDATE,
310 if (fidp->volume == volp->rw.ID)
312 else if (fidp->volume == volp->ro.ID)
314 else if (fidp->volume == volp->bk.ID)
317 if (statep->state != vl_offline && statep->state != vl_busy) {
321 code = cm_GetServerList(fidp, userp, reqp, &serverspp);
323 serversp = *serverspp;
327 lock_ObtainWrite(&cm_serverLock);
328 for (tsrp = serversp; tsrp; tsrp=tsrp->next) {
329 if (tsrp->status == srv_busy) {
330 tsrp->status = srv_not_busy;
333 lock_ReleaseWrite(&cm_serverLock);
335 cm_FreeServerList(&serversp, 0);
336 *serverspp = serversp;
339 cm_UpdateVolumeStatus(volp, statep->ID);
345 } else { /* VL Server query */
347 lock_ObtainWrite(&cm_serverLock);
348 for (tsrp = serversp; tsrp; tsrp=tsrp->next) {
349 if (tsrp->status == srv_busy) {
350 tsrp->status = srv_not_busy;
353 lock_ReleaseWrite(&cm_serverLock);
360 /* special codes: VBUSY and VRESTARTING */
361 else if (errorCode == VBUSY || errorCode == VRESTARTING) {
362 if (!serversp && fidp) {
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->server == serverp && tsrp->status == srv_not_busy) {
372 tsrp->status = srv_busy;
373 if (fidp) { /* File Server query */
374 code = cm_GetVolumeByID(cellp, fidp->volume, userp, reqp,
375 CM_GETVOL_FLAG_NO_LRU_UPDATE,
378 if (fidp->volume == volp->rw.ID)
380 else if (fidp->volume == volp->ro.ID)
382 else if (fidp->volume == volp->bk.ID)
391 lock_ReleaseWrite(&cm_serverLock);
394 cm_UpdateVolumeStatus(volp, statep->ID);
397 cm_FreeServerList(&serversp, 0);
398 *serverspp = serversp;
403 /* special codes: missing volumes */
404 else if (errorCode == VNOVOL || errorCode == VMOVED || errorCode == VOFFLINE ||
405 errorCode == VSALVAGE || errorCode == VNOSERVICE || errorCode == VIO)
410 switch ( errorCode ) {
412 msgID = MSG_SERVER_REPORTS_VNOVOL;
413 format = "Server %s reported volume %d as not attached.";
416 msgID = MSG_SERVER_REPORTS_VMOVED;
417 format = "Server %s reported volume %d as moved.";
420 msgID = MSG_SERVER_REPORTS_VOFFLINE;
421 format = "Server %s reported volume %d as offline.";
424 msgID = MSG_SERVER_REPORTS_VSALVAGE;
425 format = "Server %s reported volume %d as needs salvage.";
428 msgID = MSG_SERVER_REPORTS_VNOSERVICE;
429 format = "Server %s reported volume %d as not in service.";
432 msgID = MSG_SERVER_REPORTS_VIO;
433 format = "Server %s reported volume %d as temporarily unaccessible.";
437 /* Log server being offline for this volume */
438 sprintf(addr, "%d.%d.%d.%d",
439 ((serverp->addr.sin_addr.s_addr & 0xff)),
440 ((serverp->addr.sin_addr.s_addr & 0xff00)>> 8),
441 ((serverp->addr.sin_addr.s_addr & 0xff0000)>> 16),
442 ((serverp->addr.sin_addr.s_addr & 0xff000000)>> 24));
444 osi_Log2(afsd_logp, format, osi_LogSaveString(afsd_logp,addr), fidp->volume);
445 LogEvent(EVENTLOG_WARNING_TYPE, msgID, addr, fidp->volume);
447 /* Mark server offline for this volume */
448 if (!serversp && fidp) {
449 code = cm_GetServerList(fidp, userp, reqp, &serverspp);
451 serversp = *serverspp;
455 for (tsrp = serversp; tsrp; tsrp=tsrp->next) {
456 if (tsrp->server == serverp) {
458 if (errorCode == VNOVOL || errorCode == VMOVED) {
459 tsrp->status = srv_deleted;
461 cm_ForceUpdateVolume(fidp, userp, reqp);
464 tsrp->status = srv_offline;
468 cm_FreeServerList(&serversp, 0);
469 *serverspp = serversp;
473 } else if ( errorCode == VNOVNODE ) {
476 osi_Log4(afsd_logp, "cm_Analyze passed VNOVNODE cell %u vol %u vn %u uniq %u.",
477 fidp->cell, fidp->volume, fidp->vnode, fidp->unique);
479 scp = cm_FindSCache(fidp);
481 cm_scache_t *pscp = NULL;
483 if (scp->fileType != CM_SCACHETYPE_DIRECTORY)
484 pscp = cm_FindSCacheParent(scp);
487 lock_ObtainMutex(&scp->mx);
488 lock_ObtainWrite(&cm_scacheLock);
489 cm_RemoveSCacheFromHashTable(scp);
490 lock_ReleaseWrite(&cm_scacheLock);
491 scp->flags |= CM_SCACHEFLAG_DELETED;
492 lock_ReleaseMutex(&scp->mx);
493 cm_ReleaseSCache(scp);
496 if (cm_HaveCallback(pscp)) {
497 lock_ObtainMutex(&pscp->mx);
498 cm_DiscardSCache(pscp);
499 lock_ReleaseMutex(&pscp->mx);
501 cm_ReleaseSCache(pscp);
505 osi_Log0(afsd_logp, "cm_Analyze passed VNOVNODE unknown fid.");
510 else if (errorCode == RX_CALL_TIMEOUT) {
511 /* server took longer than hardDeadTime
512 * don't mark server as down but don't retry
513 * this is to prevent the SMB session from timing out
514 * In addition, we log an event to the event log
517 /* Log server being offline for this volume */
518 sprintf(addr, "%d.%d.%d.%d",
519 ((serverp->addr.sin_addr.s_addr & 0xff)),
520 ((serverp->addr.sin_addr.s_addr & 0xff00)>> 8),
521 ((serverp->addr.sin_addr.s_addr & 0xff0000)>> 16),
522 ((serverp->addr.sin_addr.s_addr & 0xff000000)>> 24));
524 LogEvent(EVENTLOG_WARNING_TYPE, MSG_RX_HARD_DEAD_TIME_EXCEEDED, addr);
527 osi_Log1(afsd_logp, "cm_Analyze: hardDeadTime exceeded addr[%s]",
528 osi_LogSaveString(afsd_logp,addr));
530 else if (errorCode >= -64 && errorCode < 0) {
531 /* mark server as down */
532 lock_ObtainMutex(&serverp->mx);
533 if (reqp->flags & CM_REQ_NEW_CONN_FORCED) {
534 if (!(serverp->flags & CM_SERVERFLAG_DOWN)) {
535 serverp->flags |= CM_SERVERFLAG_DOWN;
536 serverp->downTime = osi_Time();
539 reqp->flags |= CM_REQ_NEW_CONN_FORCED;
542 lock_ReleaseMutex(&serverp->mx);
543 cm_ForceNewConnections(serverp);
547 else if (errorCode == RXKADEXPIRED || errorCode == RXKADBADTICKET) {
549 lock_ObtainMutex(&userp->mx);
550 ucellp = cm_GetUCell(userp, serverp->cellp);
551 if (ucellp->ticketp) {
552 free(ucellp->ticketp);
553 ucellp->ticketp = NULL;
555 ucellp->flags &= ~CM_UCELLFLAG_RXKAD;
557 lock_ReleaseMutex(&userp->mx);
561 } else if (errorCode == VICECONNBAD || errorCode == VICETOKENDEAD) {
562 cm_ForceNewConnections(serverp);
567 char * s = "unknown error";
568 switch ( errorCode ) {
569 case RXKADINCONSISTENCY: s = "RXKADINCONSISTENCY"; break;
570 case RXKADPACKETSHORT : s = "RXKADPACKETSHORT"; break;
571 case RXKADLEVELFAIL : s = "RXKADLEVELFAIL"; break;
572 case RXKADTICKETLEN : s = "RXKADTICKETLEN"; break;
573 case RXKADOUTOFSEQUENCE: s = "RXKADOUTOFSEQUENCE"; break;
574 case RXKADNOAUTH : s = "RXKADNOAUTH"; break;
575 case RXKADBADKEY : s = "RXKADBADKEY"; break;
576 case RXKADBADTICKET : s = "RXKADBADTICKET"; break;
577 case RXKADUNKNOWNKEY : s = "RXKADUNKNOWNKEY"; break;
578 case RXKADEXPIRED : s = "RXKADEXPIRED"; break;
579 case RXKADSEALEDINCON : s = "RXKADSEALEDINCON"; break;
580 case RXKADDATALEN : s = "RXKADDATALEN"; break;
581 case RXKADILLEGALLEVEL : s = "RXKADILLEGALLEVEL"; break;
582 case VSALVAGE : s = "VSALVAGE"; break;
583 case VNOVNODE : s = "VNOVNODE"; break;
584 case VNOVOL : s = "VNOVOL"; break;
585 case VVOLEXISTS : s = "VVOLEXISTS"; break;
586 case VNOSERVICE : s = "VNOSERVICE"; break;
587 case VOFFLINE : s = "VOFFLINE"; break;
588 case VONLINE : s = "VONLINE"; break;
589 case VDISKFULL : s = "VDISKFULL"; break;
590 case VOVERQUOTA : s = "VOVERQUOTA"; break;
591 case VBUSY : s = "VBUSY"; break;
592 case VMOVED : s = "VMOVED"; break;
593 case VIO : s = "VIO"; break;
594 case VRESTRICTED : s = "VRESTRICTED"; break;
595 case VRESTARTING : s = "VRESTARTING"; break;
596 case VREADONLY : s = "VREADONLY"; break;
597 case EAGAIN : s = "EAGAIN"; break;
598 case UAEAGAIN : s = "UAEAGAIN"; break;
599 case EINVAL : s = "EINVAL"; break;
600 case UAEINVAL : s = "UAEINVAL"; break;
601 case EACCES : s = "EACCES"; break;
602 case UAEACCES : s = "UAEACCES"; break;
603 case ENOENT : s = "ENOENT"; break;
604 case UAENOENT : s = "UAENOENT"; break;
605 case VICECONNBAD : s = "VICECONNBAD"; break;
606 case VICETOKENDEAD : s = "VICETOKENDEAD"; break;
607 case WSAEWOULDBLOCK : s = "WSAEWOULDBLOCK"; break;
608 case UAEWOULDBLOCK : s = "UAEWOULDBLOCK"; break;
609 case CM_ERROR_NOSUCHCELL : s = "CM_ERROR_NOSUCHCELL"; break;
610 case CM_ERROR_NOSUCHVOLUME : s = "CM_ERROR_NOSUCHVOLUME"; break;
611 case CM_ERROR_TIMEDOUT : s = "CM_ERROR_TIMEDOUT"; break;
612 case CM_ERROR_RETRY : s = "CM_ERROR_RETRY"; break;
613 case CM_ERROR_NOACCESS : s = "CM_ERROR_NOACCESS"; break;
614 case CM_ERROR_NOSUCHFILE : s = "CM_ERROR_NOSUCHFILE"; break;
615 case CM_ERROR_STOPNOW : s = "CM_ERROR_STOPNOW"; break;
616 case CM_ERROR_TOOBIG : s = "CM_ERROR_TOOBIG"; break;
617 case CM_ERROR_INVAL : s = "CM_ERROR_INVAL"; break;
618 case CM_ERROR_BADFD : s = "CM_ERROR_BADFD"; break;
619 case CM_ERROR_BADFDOP : s = "CM_ERROR_BADFDOP"; break;
620 case CM_ERROR_EXISTS : s = "CM_ERROR_EXISTS"; break;
621 case CM_ERROR_CROSSDEVLINK : s = "CM_ERROR_CROSSDEVLINK"; break;
622 case CM_ERROR_BADOP : s = "CM_ERROR_BADOP"; break;
623 case CM_ERROR_BADPASSWORD : s = "CM_ERROR_BADPASSWORD"; break;
624 case CM_ERROR_NOTDIR : s = "CM_ERROR_NOTDIR"; break;
625 case CM_ERROR_ISDIR : s = "CM_ERROR_ISDIR"; break;
626 case CM_ERROR_READONLY : s = "CM_ERROR_READONLY"; break;
627 case CM_ERROR_WOULDBLOCK : s = "CM_ERROR_WOULDBLOCK"; break;
628 case CM_ERROR_QUOTA : s = "CM_ERROR_QUOTA"; break;
629 case CM_ERROR_SPACE : s = "CM_ERROR_SPACE"; break;
630 case CM_ERROR_BADSHARENAME : s = "CM_ERROR_BADSHARENAME"; break;
631 case CM_ERROR_BADTID : s = "CM_ERROR_BADTID"; break;
632 case CM_ERROR_UNKNOWN : s = "CM_ERROR_UNKNOWN"; break;
633 case CM_ERROR_NOMORETOKENS : s = "CM_ERROR_NOMORETOKENS"; break;
634 case CM_ERROR_NOTEMPTY : s = "CM_ERROR_NOTEMPTY"; break;
635 case CM_ERROR_USESTD : s = "CM_ERROR_USESTD"; break;
636 case CM_ERROR_REMOTECONN : s = "CM_ERROR_REMOTECONN"; break;
637 case CM_ERROR_ATSYS : s = "CM_ERROR_ATSYS"; break;
638 case CM_ERROR_NOSUCHPATH : s = "CM_ERROR_NOSUCHPATH"; break;
639 case CM_ERROR_CLOCKSKEW : s = "CM_ERROR_CLOCKSKEW"; break;
640 case CM_ERROR_BADSMB : s = "CM_ERROR_BADSMB"; break;
641 case CM_ERROR_ALLBUSY : s = "CM_ERROR_ALLBUSY"; break;
642 case CM_ERROR_NOFILES : s = "CM_ERROR_NOFILES"; break;
643 case CM_ERROR_PARTIALWRITE : s = "CM_ERROR_PARTIALWRITE"; break;
644 case CM_ERROR_NOIPC : s = "CM_ERROR_NOIPC"; break;
645 case CM_ERROR_BADNTFILENAME : s = "CM_ERROR_BADNTFILENAME"; break;
646 case CM_ERROR_BUFFERTOOSMALL : s = "CM_ERROR_BUFFERTOOSMALL"; break;
647 case CM_ERROR_RENAME_IDENTICAL : s = "CM_ERROR_RENAME_IDENTICAL"; break;
648 case CM_ERROR_ALLOFFLINE : s = "CM_ERROR_ALLOFFLINE"; break;
649 case CM_ERROR_AMBIGUOUS_FILENAME: s = "CM_ERROR_AMBIGUOUS_FILENAME"; break;
650 case CM_ERROR_BADLOGONTYPE : s = "CM_ERROR_BADLOGONTYPE"; break;
651 case CM_ERROR_GSSCONTINUE : s = "CM_ERROR_GSSCONTINUE"; break;
652 case CM_ERROR_TIDIPC : s = "CM_ERROR_TIDIPC"; break;
653 case CM_ERROR_TOO_MANY_SYMLINKS : s = "CM_ERROR_TOO_MANY_SYMLINKS"; break;
654 case CM_ERROR_PATH_NOT_COVERED : s = "CM_ERROR_PATH_NOT_COVERED"; break;
655 case CM_ERROR_LOCK_CONFLICT : s = "CM_ERROR_LOCK_CONFLICT"; break;
656 case CM_ERROR_SHARING_VIOLATION : s = "CM_ERROR_SHARING_VIOLATION"; break;
657 case CM_ERROR_ALLDOWN : s = "CM_ERROR_ALLDOWN"; break;
658 case CM_ERROR_TOOFEWBUFS : s = "CM_ERROR_TOOFEWBUFS"; break;
659 case CM_ERROR_TOOMANYBUFS : s = "CM_ERROR_TOOMANYBUFS"; break;
661 osi_Log2(afsd_logp, "cm_Analyze: ignoring error code 0x%x (%s)",
667 /* If not allowed to retry, don't */
668 if (!forcing_new && (reqp->flags & CM_REQ_NORETRY))
670 else if (retry && dead_session)
674 /* drop this on the way out */
678 /* retry until we fail to find a connection */
682 long cm_ConnByMServers(cm_serverRef_t *serversp, cm_user_t *usersp,
683 cm_req_t *reqp, cm_conn_t **connpp)
686 cm_serverRef_t *tsrp;
689 int someBusy = 0, someOffline = 0, allOffline = 1, allBusy = 1, allDown = 1;
690 long timeUsed, timeLeft, hardTimeLeft;
694 if (serversp == NULL) {
695 osi_Log1(afsd_logp, "cm_ConnByMServers returning 0x%x", CM_ERROR_ALLDOWN);
696 return CM_ERROR_ALLDOWN;
699 timeUsed = (GetTickCount() - reqp->startTime) / 1000;
701 /* leave 5 seconds margin of safety */
702 timeLeft = ConnDeadtimeout - timeUsed - 5;
703 hardTimeLeft = HardDeadtimeout - timeUsed - 5;
705 lock_ObtainWrite(&cm_serverLock);
706 for (tsrp = serversp; tsrp; tsrp=tsrp->next) {
708 cm_GetServerNoLock(tsp);
709 lock_ReleaseWrite(&cm_serverLock);
710 if (!(tsp->flags & CM_SERVERFLAG_DOWN)) {
712 if (tsrp->status == srv_deleted) {
713 /* skip this entry. no longer valid. */;
714 } else if (tsrp->status == srv_busy) {
717 } else if (tsrp->status == srv_offline) {
723 code = cm_ConnByServer(tsp, usersp, connpp);
724 if (code == 0) { /* cm_CBS only returns 0 */
726 /* Set RPC timeout */
727 if (timeLeft > ConnDeadtimeout)
728 timeLeft = ConnDeadtimeout;
730 if (hardTimeLeft > HardDeadtimeout)
731 hardTimeLeft = HardDeadtimeout;
733 lock_ObtainMutex(&(*connpp)->mx);
734 rx_SetConnDeadTime((*connpp)->callp, timeLeft);
735 rx_SetConnHardDeadTime((*connpp)->callp, (u_short) hardTimeLeft);
736 lock_ReleaseMutex(&(*connpp)->mx);
740 /* therefore, this code is never executed */
745 lock_ObtainWrite(&cm_serverLock);
746 cm_PutServerNoLock(tsp);
748 lock_ReleaseWrite(&cm_serverLock);
750 if (firstError == 0) {
752 firstError = CM_ERROR_ALLDOWN;
754 firstError = CM_ERROR_ALLBUSY;
755 else if (allOffline || (someBusy && someOffline))
756 firstError = CM_ERROR_ALLOFFLINE;
758 osi_Log0(afsd_logp, "cm_ConnByMServers returning impossible error TIMEDOUT");
759 firstError = CM_ERROR_TIMEDOUT;
763 osi_Log1(afsd_logp, "cm_ConnByMServers returning 0x%x", firstError);
767 /* called with a held server to GC all bad connections hanging off of the server */
768 void cm_GCConnections(cm_server_t *serverp)
774 lock_ObtainWrite(&cm_connLock);
775 lcpp = &serverp->connsp;
776 for (tcp = *lcpp; tcp; tcp = *lcpp) {
778 if (userp && tcp->refCount == 0 && (userp->vcRefs == 0)) {
779 /* do the deletion of this guy */
780 cm_PutServer(tcp->serverp);
781 cm_ReleaseUser(userp);
783 rx_DestroyConnection(tcp->callp);
784 lock_FinalizeMutex(&tcp->mx);
788 /* just advance to the next */
792 lock_ReleaseWrite(&cm_connLock);
795 static void cm_NewRXConnection(cm_conn_t *tcp, cm_ucell_t *ucellp,
796 cm_server_t *serverp)
801 struct rx_securityClass *secObjp;
803 if (serverp->type == CM_SERVER_VLDB) {
808 osi_assert(serverp->type == CM_SERVER_FILE);
812 if (ucellp->flags & CM_UCELLFLAG_RXKAD) {
815 tcp->cryptlevel = rxkad_crypt;
817 tcp->cryptlevel = rxkad_clear;
819 secObjp = rxkad_NewClientSecurityObject(tcp->cryptlevel,
820 &ucellp->sessionKey, ucellp->kvno,
821 ucellp->ticketLen, ucellp->ticketp);
825 tcp->cryptlevel = rxkad_clear;
826 secObjp = rxnull_NewClientSecurityObject();
828 osi_assert(secObjp != NULL);
829 tcp->callp = rx_NewConnection(serverp->addr.sin_addr.s_addr,
834 rx_SetConnDeadTime(tcp->callp, ConnDeadtimeout);
835 rx_SetConnHardDeadTime(tcp->callp, HardDeadtimeout);
836 tcp->ucgen = ucellp->gen;
838 rxs_Release(secObjp); /* Decrement the initial refCount */
841 long cm_ConnByServer(cm_server_t *serverp, cm_user_t *userp, cm_conn_t **connpp)
848 lock_ObtainMutex(&userp->mx);
849 lock_ObtainWrite(&cm_connLock);
850 for (tcp = serverp->connsp; tcp; tcp=tcp->nextp) {
851 if (tcp->userp == userp)
855 /* find ucell structure */
856 ucellp = cm_GetUCell(userp, serverp->cellp);
858 cm_GetServer(serverp);
859 tcp = malloc(sizeof(*tcp));
860 memset(tcp, 0, sizeof(*tcp));
861 tcp->nextp = serverp->connsp;
862 serverp->connsp = tcp;
865 lock_InitializeMutex(&tcp->mx, "cm_conn_t mutex");
866 lock_ObtainMutex(&tcp->mx);
867 tcp->serverp = serverp;
868 tcp->cryptlevel = rxkad_clear;
869 cm_NewRXConnection(tcp, ucellp, serverp);
871 lock_ReleaseMutex(&tcp->mx);
873 if ((tcp->flags & CM_CONN_FLAG_FORCE_NEW) ||
874 (tcp->ucgen < ucellp->gen) ||
875 (tcp->cryptlevel != (cryptall ? (ucellp->flags & CM_UCELLFLAG_RXKAD ? rxkad_crypt : rxkad_clear) : rxkad_clear)))
877 if (tcp->ucgen < ucellp->gen)
878 osi_Log0(afsd_logp, "cm_ConnByServer replace connection due to token update");
880 osi_Log0(afsd_logp, "cm_ConnByServer replace connection due to crypt change");
881 lock_ObtainMutex(&tcp->mx);
882 tcp->flags &= ~CM_CONN_FLAG_FORCE_NEW;
883 rx_DestroyConnection(tcp->callp);
884 cm_NewRXConnection(tcp, ucellp, serverp);
885 lock_ReleaseMutex(&tcp->mx);
889 lock_ReleaseWrite(&cm_connLock);
890 lock_ReleaseMutex(&userp->mx);
892 /* return this pointer to our caller */
893 osi_Log1(afsd_logp, "cm_ConnByServer returning conn 0x%p", tcp);
899 long cm_ServerAvailable(struct cm_fid *fidp, struct cm_user *userp)
903 cm_serverRef_t **serverspp;
904 cm_serverRef_t *tsrp;
906 int someBusy = 0, someOffline = 0, allOffline = 1, allBusy = 1, allDown = 1;
910 code = cm_GetServerList(fidp, userp, &req, &serverspp);
914 lock_ObtainWrite(&cm_serverLock);
915 for (tsrp = *serverspp; tsrp; tsrp=tsrp->next) {
917 cm_GetServerNoLock(tsp);
918 if (!(tsp->flags & CM_SERVERFLAG_DOWN)) {
920 if (tsrp->status == srv_busy) {
923 } else if (tsrp->status == srv_offline) {
931 cm_PutServerNoLock(tsp);
933 lock_ReleaseWrite(&cm_serverLock);
934 cm_FreeServerList(serverspp, 0);
940 else if (allOffline || (someBusy && someOffline))
947 * The returned cm_conn_t ** object is released in the subsequent call
950 long cm_ConnFromFID(struct cm_fid *fidp, struct cm_user *userp, cm_req_t *reqp,
954 cm_serverRef_t **serverspp;
958 code = cm_GetServerList(fidp, userp, reqp, &serverspp);
963 code = cm_ConnByMServers(*serverspp, userp, reqp, connpp);
964 cm_FreeServerList(serverspp, 0);
969 long cm_ConnFromVolume(struct cm_volume *volp, unsigned long volid, struct cm_user *userp, cm_req_t *reqp,
973 cm_serverRef_t **serverspp;
977 serverspp = cm_GetVolServers(volp, volid);
979 code = cm_ConnByMServers(*serverspp, userp, reqp, connpp);
980 cm_FreeServerList(serverspp, 0);
985 extern struct rx_connection *
986 cm_GetRxConn(cm_conn_t *connp)
988 struct rx_connection * rxconn;
989 lock_ObtainMutex(&connp->mx);
990 rxconn = connp->callp;
991 rx_GetConnection(rxconn);
992 lock_ReleaseMutex(&connp->mx);
996 void cm_ForceNewConnections(cm_server_t *serverp)
1000 lock_ObtainWrite(&cm_connLock);
1001 for (tcp = serverp->connsp; tcp; tcp=tcp->nextp) {
1002 lock_ObtainMutex(&tcp->mx);
1003 tcp->flags |= CM_CONN_FLAG_FORCE_NEW;
1004 lock_ReleaseMutex(&tcp->mx);
1006 lock_ReleaseWrite(&cm_connLock);