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_assertx(connp->refCount-- > 0, "cm_conn_t 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) {
232 osi_Log0(afsd_logp, "cm_Analyze passed EWOULDBLOCK or EAGAIN.");
239 /* if there is nosuchvolume, then we have a situation in which a
240 * previously known volume no longer has a set of servers
241 * associated with it. Either the volume has moved or
242 * the volume has been deleted. Try to find a new server list
243 * until the timeout period expires.
245 else if (errorCode == CM_ERROR_NOSUCHVOLUME) {
246 osi_Log0(afsd_logp, "cm_Analyze passed CM_ERROR_NOSUCHVOLUME.");
252 if (fidp != NULL) /* Not a VLDB call */
253 cm_ForceUpdateVolume(fidp, userp, reqp);
257 else if (errorCode == CM_ERROR_ALLDOWN) {
258 osi_Log0(afsd_logp, "cm_Analyze passed CM_ERROR_ALLDOWN.");
259 /* Servers marked DOWN will be restored by the background daemon
260 * thread as they become available.
264 else if (errorCode == CM_ERROR_ALLOFFLINE) {
265 osi_Log0(afsd_logp, "cm_Analyze passed CM_ERROR_ALLOFFLINE.");
266 /* Volume instances marked offline will be restored by the
267 * background daemon thread as they become available
269 if (timeLeft > 7 && fidp) {
271 cm_vol_state_t *statep;
275 code = cm_GetVolumeByID(cellp, fidp->volume, userp, reqp,
276 CM_GETVOL_FLAG_NO_LRU_UPDATE,
279 if (fidp->volume == volp->rw.ID)
281 else if (fidp->volume == volp->ro.ID)
283 else if (fidp->volume == volp->bk.ID)
286 if (statep->state != vl_offline) {
289 if (cm_CheckOfflineVolume(volp, statep->ID))
297 else if (errorCode == CM_ERROR_ALLBUSY) {
298 /* Volumes that are busy cannot be determined to be non-busy
299 * without actually attempting to access them.
301 osi_Log0(afsd_logp, "cm_Analyze passed CM_ERROR_ALLBUSY.");
306 if (fidp) { /* File Server query */
307 code = cm_GetVolumeByID(cellp, fidp->volume, userp, reqp,
308 CM_GETVOL_FLAG_NO_LRU_UPDATE,
311 if (fidp->volume == volp->rw.ID)
313 else if (fidp->volume == volp->ro.ID)
315 else if (fidp->volume == volp->bk.ID)
318 if (statep->state != vl_offline && statep->state != vl_busy) {
322 code = cm_GetServerList(fidp, userp, reqp, &serverspp);
324 serversp = *serverspp;
328 lock_ObtainWrite(&cm_serverLock);
329 for (tsrp = serversp; tsrp; tsrp=tsrp->next) {
330 if (tsrp->status == srv_busy) {
331 tsrp->status = srv_not_busy;
334 lock_ReleaseWrite(&cm_serverLock);
336 cm_FreeServerList(&serversp, 0);
337 *serverspp = serversp;
340 cm_UpdateVolumeStatus(volp, statep->ID);
346 } else { /* VL Server query */
348 lock_ObtainWrite(&cm_serverLock);
349 for (tsrp = serversp; tsrp; tsrp=tsrp->next) {
350 if (tsrp->status == srv_busy) {
351 tsrp->status = srv_not_busy;
354 lock_ReleaseWrite(&cm_serverLock);
361 /* special codes: VBUSY and VRESTARTING */
362 else if (errorCode == VBUSY || errorCode == VRESTARTING) {
363 if (!serversp && fidp) {
364 code = cm_GetServerList(fidp, userp, reqp, &serverspp);
366 serversp = *serverspp;
370 lock_ObtainWrite(&cm_serverLock);
371 for (tsrp = serversp; tsrp; tsrp=tsrp->next) {
372 if (tsrp->server == serverp && tsrp->status == srv_not_busy) {
373 tsrp->status = srv_busy;
374 if (fidp) { /* File Server query */
375 code = cm_GetVolumeByID(cellp, fidp->volume, userp, reqp,
376 CM_GETVOL_FLAG_NO_LRU_UPDATE,
379 if (fidp->volume == volp->rw.ID)
381 else if (fidp->volume == volp->ro.ID)
383 else if (fidp->volume == volp->bk.ID)
392 lock_ReleaseWrite(&cm_serverLock);
395 cm_UpdateVolumeStatus(volp, statep->ID);
398 cm_FreeServerList(&serversp, 0);
399 *serverspp = serversp;
404 /* special codes: missing volumes */
405 else if (errorCode == VNOVOL || errorCode == VMOVED || errorCode == VOFFLINE ||
406 errorCode == VSALVAGE || errorCode == VNOSERVICE || errorCode == VIO)
411 switch ( errorCode ) {
413 msgID = MSG_SERVER_REPORTS_VNOVOL;
414 format = "Server %s reported volume %d as not attached.";
417 msgID = MSG_SERVER_REPORTS_VMOVED;
418 format = "Server %s reported volume %d as moved.";
421 msgID = MSG_SERVER_REPORTS_VOFFLINE;
422 format = "Server %s reported volume %d as offline.";
425 msgID = MSG_SERVER_REPORTS_VSALVAGE;
426 format = "Server %s reported volume %d as needs salvage.";
429 msgID = MSG_SERVER_REPORTS_VNOSERVICE;
430 format = "Server %s reported volume %d as not in service.";
433 msgID = MSG_SERVER_REPORTS_VIO;
434 format = "Server %s reported volume %d as temporarily unaccessible.";
438 /* Log server being offline for this volume */
439 sprintf(addr, "%d.%d.%d.%d",
440 ((serverp->addr.sin_addr.s_addr & 0xff)),
441 ((serverp->addr.sin_addr.s_addr & 0xff00)>> 8),
442 ((serverp->addr.sin_addr.s_addr & 0xff0000)>> 16),
443 ((serverp->addr.sin_addr.s_addr & 0xff000000)>> 24));
445 osi_Log2(afsd_logp, format, osi_LogSaveString(afsd_logp,addr), fidp->volume);
446 LogEvent(EVENTLOG_WARNING_TYPE, msgID, addr, fidp->volume);
448 /* Mark server offline for this volume */
449 if (!serversp && fidp) {
450 code = cm_GetServerList(fidp, userp, reqp, &serverspp);
452 serversp = *serverspp;
456 for (tsrp = serversp; tsrp; tsrp=tsrp->next) {
457 if (tsrp->server == serverp) {
459 if (errorCode == VNOVOL || errorCode == VMOVED) {
460 tsrp->status = srv_deleted;
462 cm_ForceUpdateVolume(fidp, userp, reqp);
465 tsrp->status = srv_offline;
469 cm_FreeServerList(&serversp, 0);
470 *serverspp = serversp;
474 } else if ( errorCode == VNOVNODE ) {
477 osi_Log4(afsd_logp, "cm_Analyze passed VNOVNODE cell %u vol %u vn %u uniq %u.",
478 fidp->cell, fidp->volume, fidp->vnode, fidp->unique);
480 scp = cm_FindSCache(fidp);
482 cm_scache_t *pscp = NULL;
484 if (scp->fileType != CM_SCACHETYPE_DIRECTORY)
485 pscp = cm_FindSCacheParent(scp);
488 lock_ObtainMutex(&scp->mx);
489 lock_ObtainWrite(&cm_scacheLock);
490 cm_RemoveSCacheFromHashTable(scp);
491 lock_ReleaseWrite(&cm_scacheLock);
492 scp->flags |= CM_SCACHEFLAG_DELETED;
493 lock_ReleaseMutex(&scp->mx);
494 cm_ReleaseSCache(scp);
497 if (cm_HaveCallback(pscp)) {
498 lock_ObtainMutex(&pscp->mx);
499 cm_DiscardSCache(pscp);
500 lock_ReleaseMutex(&pscp->mx);
502 cm_ReleaseSCache(pscp);
506 osi_Log0(afsd_logp, "cm_Analyze passed VNOVNODE unknown fid.");
511 else if (errorCode == RX_CALL_TIMEOUT) {
512 /* server took longer than hardDeadTime
513 * don't mark server as down but don't retry
514 * this is to prevent the SMB session from timing out
515 * In addition, we log an event to the event log
518 /* Log server being offline for this volume */
519 sprintf(addr, "%d.%d.%d.%d",
520 ((serverp->addr.sin_addr.s_addr & 0xff)),
521 ((serverp->addr.sin_addr.s_addr & 0xff00)>> 8),
522 ((serverp->addr.sin_addr.s_addr & 0xff0000)>> 16),
523 ((serverp->addr.sin_addr.s_addr & 0xff000000)>> 24));
525 LogEvent(EVENTLOG_WARNING_TYPE, MSG_RX_HARD_DEAD_TIME_EXCEEDED, addr);
528 osi_Log1(afsd_logp, "cm_Analyze: hardDeadTime exceeded addr[%s]",
529 osi_LogSaveString(afsd_logp,addr));
531 else if (errorCode >= -64 && errorCode < 0) {
532 /* mark server as down */
533 lock_ObtainMutex(&serverp->mx);
534 if (reqp->flags & CM_REQ_NEW_CONN_FORCED) {
535 if (!(serverp->flags & CM_SERVERFLAG_DOWN)) {
536 serverp->flags |= CM_SERVERFLAG_DOWN;
537 serverp->downTime = osi_Time();
540 reqp->flags |= CM_REQ_NEW_CONN_FORCED;
543 lock_ReleaseMutex(&serverp->mx);
544 cm_ForceNewConnections(serverp);
548 else if (errorCode == RXKADEXPIRED || errorCode == RXKADBADTICKET) {
550 lock_ObtainMutex(&userp->mx);
551 ucellp = cm_GetUCell(userp, serverp->cellp);
552 if (ucellp->ticketp) {
553 free(ucellp->ticketp);
554 ucellp->ticketp = NULL;
556 ucellp->flags &= ~CM_UCELLFLAG_RXKAD;
558 lock_ReleaseMutex(&userp->mx);
562 } else if (errorCode == VICECONNBAD || errorCode == VICETOKENDEAD) {
563 cm_ForceNewConnections(serverp);
568 char * s = "unknown error";
569 switch ( errorCode ) {
570 case RXKADINCONSISTENCY: s = "RXKADINCONSISTENCY"; break;
571 case RXKADPACKETSHORT : s = "RXKADPACKETSHORT"; break;
572 case RXKADLEVELFAIL : s = "RXKADLEVELFAIL"; break;
573 case RXKADTICKETLEN : s = "RXKADTICKETLEN"; break;
574 case RXKADOUTOFSEQUENCE: s = "RXKADOUTOFSEQUENCE"; break;
575 case RXKADNOAUTH : s = "RXKADNOAUTH"; break;
576 case RXKADBADKEY : s = "RXKADBADKEY"; break;
577 case RXKADBADTICKET : s = "RXKADBADTICKET"; break;
578 case RXKADUNKNOWNKEY : s = "RXKADUNKNOWNKEY"; break;
579 case RXKADEXPIRED : s = "RXKADEXPIRED"; break;
580 case RXKADSEALEDINCON : s = "RXKADSEALEDINCON"; break;
581 case RXKADDATALEN : s = "RXKADDATALEN"; break;
582 case RXKADILLEGALLEVEL : s = "RXKADILLEGALLEVEL"; break;
583 case VSALVAGE : s = "VSALVAGE"; break;
584 case VNOVNODE : s = "VNOVNODE"; break;
585 case VNOVOL : s = "VNOVOL"; break;
586 case VVOLEXISTS : s = "VVOLEXISTS"; break;
587 case VNOSERVICE : s = "VNOSERVICE"; break;
588 case VOFFLINE : s = "VOFFLINE"; break;
589 case VONLINE : s = "VONLINE"; break;
590 case VDISKFULL : s = "VDISKFULL"; break;
591 case VOVERQUOTA : s = "VOVERQUOTA"; break;
592 case VBUSY : s = "VBUSY"; break;
593 case VMOVED : s = "VMOVED"; break;
594 case VIO : s = "VIO"; break;
595 case VRESTRICTED : s = "VRESTRICTED"; break;
596 case VRESTARTING : s = "VRESTARTING"; break;
597 case VREADONLY : s = "VREADONLY"; break;
598 case EAGAIN : s = "EAGAIN"; break;
599 case UAEAGAIN : s = "UAEAGAIN"; break;
600 case EINVAL : s = "EINVAL"; break;
601 case UAEINVAL : s = "UAEINVAL"; break;
602 case EACCES : s = "EACCES"; break;
603 case UAEACCES : s = "UAEACCES"; break;
604 case ENOENT : s = "ENOENT"; break;
605 case UAENOENT : s = "UAENOENT"; break;
606 case VICECONNBAD : s = "VICECONNBAD"; break;
607 case VICETOKENDEAD : s = "VICETOKENDEAD"; break;
608 case WSAEWOULDBLOCK : s = "WSAEWOULDBLOCK"; break;
609 case UAEWOULDBLOCK : s = "UAEWOULDBLOCK"; break;
610 case CM_ERROR_NOSUCHCELL : s = "CM_ERROR_NOSUCHCELL"; break;
611 case CM_ERROR_NOSUCHVOLUME : s = "CM_ERROR_NOSUCHVOLUME"; break;
612 case CM_ERROR_TIMEDOUT : s = "CM_ERROR_TIMEDOUT"; break;
613 case CM_ERROR_RETRY : s = "CM_ERROR_RETRY"; break;
614 case CM_ERROR_NOACCESS : s = "CM_ERROR_NOACCESS"; break;
615 case CM_ERROR_NOSUCHFILE : s = "CM_ERROR_NOSUCHFILE"; break;
616 case CM_ERROR_STOPNOW : s = "CM_ERROR_STOPNOW"; break;
617 case CM_ERROR_TOOBIG : s = "CM_ERROR_TOOBIG"; break;
618 case CM_ERROR_INVAL : s = "CM_ERROR_INVAL"; break;
619 case CM_ERROR_BADFD : s = "CM_ERROR_BADFD"; break;
620 case CM_ERROR_BADFDOP : s = "CM_ERROR_BADFDOP"; break;
621 case CM_ERROR_EXISTS : s = "CM_ERROR_EXISTS"; break;
622 case CM_ERROR_CROSSDEVLINK : s = "CM_ERROR_CROSSDEVLINK"; break;
623 case CM_ERROR_BADOP : s = "CM_ERROR_BADOP"; break;
624 case CM_ERROR_BADPASSWORD : s = "CM_ERROR_BADPASSWORD"; break;
625 case CM_ERROR_NOTDIR : s = "CM_ERROR_NOTDIR"; break;
626 case CM_ERROR_ISDIR : s = "CM_ERROR_ISDIR"; break;
627 case CM_ERROR_READONLY : s = "CM_ERROR_READONLY"; break;
628 case CM_ERROR_WOULDBLOCK : s = "CM_ERROR_WOULDBLOCK"; break;
629 case CM_ERROR_QUOTA : s = "CM_ERROR_QUOTA"; break;
630 case CM_ERROR_SPACE : s = "CM_ERROR_SPACE"; break;
631 case CM_ERROR_BADSHARENAME : s = "CM_ERROR_BADSHARENAME"; break;
632 case CM_ERROR_BADTID : s = "CM_ERROR_BADTID"; break;
633 case CM_ERROR_UNKNOWN : s = "CM_ERROR_UNKNOWN"; break;
634 case CM_ERROR_NOMORETOKENS : s = "CM_ERROR_NOMORETOKENS"; break;
635 case CM_ERROR_NOTEMPTY : s = "CM_ERROR_NOTEMPTY"; break;
636 case CM_ERROR_USESTD : s = "CM_ERROR_USESTD"; break;
637 case CM_ERROR_REMOTECONN : s = "CM_ERROR_REMOTECONN"; break;
638 case CM_ERROR_ATSYS : s = "CM_ERROR_ATSYS"; break;
639 case CM_ERROR_NOSUCHPATH : s = "CM_ERROR_NOSUCHPATH"; break;
640 case CM_ERROR_CLOCKSKEW : s = "CM_ERROR_CLOCKSKEW"; break;
641 case CM_ERROR_BADSMB : s = "CM_ERROR_BADSMB"; break;
642 case CM_ERROR_ALLBUSY : s = "CM_ERROR_ALLBUSY"; break;
643 case CM_ERROR_NOFILES : s = "CM_ERROR_NOFILES"; break;
644 case CM_ERROR_PARTIALWRITE : s = "CM_ERROR_PARTIALWRITE"; break;
645 case CM_ERROR_NOIPC : s = "CM_ERROR_NOIPC"; break;
646 case CM_ERROR_BADNTFILENAME : s = "CM_ERROR_BADNTFILENAME"; break;
647 case CM_ERROR_BUFFERTOOSMALL : s = "CM_ERROR_BUFFERTOOSMALL"; break;
648 case CM_ERROR_RENAME_IDENTICAL : s = "CM_ERROR_RENAME_IDENTICAL"; break;
649 case CM_ERROR_ALLOFFLINE : s = "CM_ERROR_ALLOFFLINE"; break;
650 case CM_ERROR_AMBIGUOUS_FILENAME: s = "CM_ERROR_AMBIGUOUS_FILENAME"; break;
651 case CM_ERROR_BADLOGONTYPE : s = "CM_ERROR_BADLOGONTYPE"; break;
652 case CM_ERROR_GSSCONTINUE : s = "CM_ERROR_GSSCONTINUE"; break;
653 case CM_ERROR_TIDIPC : s = "CM_ERROR_TIDIPC"; break;
654 case CM_ERROR_TOO_MANY_SYMLINKS : s = "CM_ERROR_TOO_MANY_SYMLINKS"; break;
655 case CM_ERROR_PATH_NOT_COVERED : s = "CM_ERROR_PATH_NOT_COVERED"; break;
656 case CM_ERROR_LOCK_CONFLICT : s = "CM_ERROR_LOCK_CONFLICT"; break;
657 case CM_ERROR_SHARING_VIOLATION : s = "CM_ERROR_SHARING_VIOLATION"; break;
658 case CM_ERROR_ALLDOWN : s = "CM_ERROR_ALLDOWN"; break;
659 case CM_ERROR_TOOFEWBUFS : s = "CM_ERROR_TOOFEWBUFS"; break;
660 case CM_ERROR_TOOMANYBUFS : s = "CM_ERROR_TOOMANYBUFS"; break;
662 osi_Log2(afsd_logp, "cm_Analyze: ignoring error code 0x%x (%s)",
668 /* If not allowed to retry, don't */
669 if (!forcing_new && (reqp->flags & CM_REQ_NORETRY))
671 else if (retry && dead_session)
675 /* drop this on the way out */
679 /* retry until we fail to find a connection */
683 long cm_ConnByMServers(cm_serverRef_t *serversp, cm_user_t *usersp,
684 cm_req_t *reqp, cm_conn_t **connpp)
687 cm_serverRef_t *tsrp;
690 int someBusy = 0, someOffline = 0, allOffline = 1, allBusy = 1, allDown = 1;
691 long timeUsed, timeLeft, hardTimeLeft;
695 if (serversp == NULL) {
696 osi_Log1(afsd_logp, "cm_ConnByMServers returning 0x%x", CM_ERROR_ALLDOWN);
697 return CM_ERROR_ALLDOWN;
700 timeUsed = (GetTickCount() - reqp->startTime) / 1000;
702 /* leave 5 seconds margin of safety */
703 timeLeft = ConnDeadtimeout - timeUsed - 5;
704 hardTimeLeft = HardDeadtimeout - timeUsed - 5;
706 lock_ObtainWrite(&cm_serverLock);
707 for (tsrp = serversp; tsrp; tsrp=tsrp->next) {
709 cm_GetServerNoLock(tsp);
710 lock_ReleaseWrite(&cm_serverLock);
711 if (!(tsp->flags & CM_SERVERFLAG_DOWN)) {
713 if (tsrp->status == srv_deleted) {
714 /* skip this entry. no longer valid. */;
715 } else if (tsrp->status == srv_busy) {
718 } else if (tsrp->status == srv_offline) {
724 code = cm_ConnByServer(tsp, usersp, connpp);
725 if (code == 0) { /* cm_CBS only returns 0 */
727 /* Set RPC timeout */
728 if (timeLeft > ConnDeadtimeout)
729 timeLeft = ConnDeadtimeout;
731 if (hardTimeLeft > HardDeadtimeout)
732 hardTimeLeft = HardDeadtimeout;
734 lock_ObtainMutex(&(*connpp)->mx);
735 rx_SetConnDeadTime((*connpp)->callp, timeLeft);
736 rx_SetConnHardDeadTime((*connpp)->callp, (u_short) hardTimeLeft);
737 lock_ReleaseMutex(&(*connpp)->mx);
741 /* therefore, this code is never executed */
746 lock_ObtainWrite(&cm_serverLock);
747 cm_PutServerNoLock(tsp);
749 lock_ReleaseWrite(&cm_serverLock);
751 if (firstError == 0) {
753 firstError = CM_ERROR_ALLDOWN;
755 firstError = CM_ERROR_ALLBUSY;
756 else if (allOffline || (someBusy && someOffline))
757 firstError = CM_ERROR_ALLOFFLINE;
759 osi_Log0(afsd_logp, "cm_ConnByMServers returning impossible error TIMEDOUT");
760 firstError = CM_ERROR_TIMEDOUT;
764 osi_Log1(afsd_logp, "cm_ConnByMServers returning 0x%x", firstError);
768 /* called with a held server to GC all bad connections hanging off of the server */
769 void cm_GCConnections(cm_server_t *serverp)
775 lock_ObtainWrite(&cm_connLock);
776 lcpp = &serverp->connsp;
777 for (tcp = *lcpp; tcp; tcp = *lcpp) {
779 if (userp && tcp->refCount == 0 && (userp->vcRefs == 0)) {
780 /* do the deletion of this guy */
781 cm_PutServer(tcp->serverp);
782 cm_ReleaseUser(userp);
784 rx_DestroyConnection(tcp->callp);
785 lock_FinalizeMutex(&tcp->mx);
789 /* just advance to the next */
793 lock_ReleaseWrite(&cm_connLock);
796 static void cm_NewRXConnection(cm_conn_t *tcp, cm_ucell_t *ucellp,
797 cm_server_t *serverp)
802 struct rx_securityClass *secObjp;
804 if (serverp->type == CM_SERVER_VLDB) {
809 osi_assertx(serverp->type == CM_SERVER_FILE, "incorrect server type");
813 if (ucellp->flags & CM_UCELLFLAG_RXKAD) {
816 tcp->cryptlevel = rxkad_crypt;
818 tcp->cryptlevel = rxkad_clear;
820 secObjp = rxkad_NewClientSecurityObject(tcp->cryptlevel,
821 &ucellp->sessionKey, ucellp->kvno,
822 ucellp->ticketLen, ucellp->ticketp);
826 tcp->cryptlevel = rxkad_clear;
827 secObjp = rxnull_NewClientSecurityObject();
829 osi_assertx(secObjp != NULL, "null rx_securityClass");
830 tcp->callp = rx_NewConnection(serverp->addr.sin_addr.s_addr,
835 rx_SetConnDeadTime(tcp->callp, ConnDeadtimeout);
836 rx_SetConnHardDeadTime(tcp->callp, HardDeadtimeout);
837 tcp->ucgen = ucellp->gen;
839 rxs_Release(secObjp); /* Decrement the initial refCount */
842 long cm_ConnByServer(cm_server_t *serverp, cm_user_t *userp, cm_conn_t **connpp)
849 lock_ObtainMutex(&userp->mx);
850 lock_ObtainWrite(&cm_connLock);
851 for (tcp = serverp->connsp; tcp; tcp=tcp->nextp) {
852 if (tcp->userp == userp)
856 /* find ucell structure */
857 ucellp = cm_GetUCell(userp, serverp->cellp);
859 cm_GetServer(serverp);
860 tcp = malloc(sizeof(*tcp));
861 memset(tcp, 0, sizeof(*tcp));
862 tcp->nextp = serverp->connsp;
863 serverp->connsp = tcp;
866 lock_InitializeMutex(&tcp->mx, "cm_conn_t mutex");
867 lock_ObtainMutex(&tcp->mx);
868 tcp->serverp = serverp;
869 tcp->cryptlevel = rxkad_clear;
870 cm_NewRXConnection(tcp, ucellp, serverp);
872 lock_ReleaseMutex(&tcp->mx);
874 if ((tcp->flags & CM_CONN_FLAG_FORCE_NEW) ||
875 (tcp->ucgen < ucellp->gen) ||
876 (tcp->cryptlevel != (cryptall ? (ucellp->flags & CM_UCELLFLAG_RXKAD ? rxkad_crypt : rxkad_clear) : rxkad_clear)))
878 if (tcp->ucgen < ucellp->gen)
879 osi_Log0(afsd_logp, "cm_ConnByServer replace connection due to token update");
881 osi_Log0(afsd_logp, "cm_ConnByServer replace connection due to crypt change");
882 lock_ObtainMutex(&tcp->mx);
883 tcp->flags &= ~CM_CONN_FLAG_FORCE_NEW;
884 rx_DestroyConnection(tcp->callp);
885 cm_NewRXConnection(tcp, ucellp, serverp);
886 lock_ReleaseMutex(&tcp->mx);
890 lock_ReleaseWrite(&cm_connLock);
891 lock_ReleaseMutex(&userp->mx);
893 /* return this pointer to our caller */
894 osi_Log1(afsd_logp, "cm_ConnByServer returning conn 0x%p", tcp);
900 long cm_ServerAvailable(struct cm_fid *fidp, struct cm_user *userp)
904 cm_serverRef_t **serverspp;
905 cm_serverRef_t *tsrp;
907 int someBusy = 0, someOffline = 0, allOffline = 1, allBusy = 1, allDown = 1;
911 code = cm_GetServerList(fidp, userp, &req, &serverspp);
915 lock_ObtainWrite(&cm_serverLock);
916 for (tsrp = *serverspp; tsrp; tsrp=tsrp->next) {
918 cm_GetServerNoLock(tsp);
919 if (!(tsp->flags & CM_SERVERFLAG_DOWN)) {
921 if (tsrp->status == srv_busy) {
924 } else if (tsrp->status == srv_offline) {
932 cm_PutServerNoLock(tsp);
934 lock_ReleaseWrite(&cm_serverLock);
935 cm_FreeServerList(serverspp, 0);
941 else if (allOffline || (someBusy && someOffline))
948 * The returned cm_conn_t ** object is released in the subsequent call
951 long cm_ConnFromFID(struct cm_fid *fidp, struct cm_user *userp, cm_req_t *reqp,
955 cm_serverRef_t **serverspp;
959 code = cm_GetServerList(fidp, userp, reqp, &serverspp);
964 code = cm_ConnByMServers(*serverspp, userp, reqp, connpp);
965 cm_FreeServerList(serverspp, 0);
970 long cm_ConnFromVolume(struct cm_volume *volp, unsigned long volid, struct cm_user *userp, cm_req_t *reqp,
974 cm_serverRef_t **serverspp;
978 serverspp = cm_GetVolServers(volp, volid);
980 code = cm_ConnByMServers(*serverspp, userp, reqp, connpp);
981 cm_FreeServerList(serverspp, 0);
986 extern struct rx_connection *
987 cm_GetRxConn(cm_conn_t *connp)
989 struct rx_connection * rxconn;
990 lock_ObtainMutex(&connp->mx);
991 rxconn = connp->callp;
992 rx_GetConnection(rxconn);
993 lock_ReleaseMutex(&connp->mx);
997 void cm_ForceNewConnections(cm_server_t *serverp)
1001 lock_ObtainWrite(&cm_connLock);
1002 for (tcp = serverp->connsp; tcp; tcp=tcp->nextp) {
1003 lock_ObtainMutex(&tcp->mx);
1004 tcp->flags |= CM_CONN_FLAG_FORCE_NEW;
1005 lock_ReleaseMutex(&tcp->mx);
1007 lock_ReleaseWrite(&cm_connLock);