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, 0);
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, 0);
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) {
272 code = cm_GetVolumeByID(cellp, fidp->volume, userp, reqp,
273 CM_GETVOL_FLAG_NO_LRU_UPDATE,
276 if (fidp->volume == volp->rw.ID)
278 else if (fidp->volume == volp->ro.ID)
280 else if (fidp->volume == volp->bk.ID)
283 if (statep->state != vl_offline && statep->state != vl_unknown) {
286 if (cm_CheckOfflineVolume(volp, statep->ID))
294 else if (errorCode == CM_ERROR_ALLBUSY) {
295 /* Volumes that are busy cannot be determined to be non-busy
296 * without actually attempting to access them.
298 osi_Log0(afsd_logp, "cm_Analyze passed CM_ERROR_ALLBUSY.");
303 if (fidp) { /* File Server query */
304 code = cm_GetVolumeByID(cellp, fidp->volume, userp, reqp,
305 CM_GETVOL_FLAG_NO_LRU_UPDATE,
308 if (fidp->volume == volp->rw.ID)
310 else if (fidp->volume == volp->ro.ID)
312 else if (fidp->volume == volp->bk.ID)
315 if (statep->state != vl_offline &&
316 statep->state != vl_busy &&
317 statep->state != vl_unknown) {
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)
389 lock_ReleaseWrite(&cm_serverLock);
392 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 if (serverp && fidp) {
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);
449 /* Mark server offline for this volume */
450 if (!serversp && fidp) {
451 code = cm_GetServerList(fidp, userp, reqp, &serverspp);
453 serversp = *serverspp;
458 lock_ObtainWrite(&cm_serverLock);
459 for (tsrp = serversp; tsrp; tsrp=tsrp->next) {
460 if (tsrp->server == serverp) {
462 if (errorCode == VMOVED) {
463 tsrp->status = srv_deleted;
465 tsrp->status = srv_offline;
468 if (fidp) { /* File Server query */
469 code = cm_GetVolumeByID(cellp, fidp->volume, userp, reqp,
470 CM_GETVOL_FLAG_NO_LRU_UPDATE,
473 if (fidp->volume == volp->rw.ID)
475 else if (fidp->volume == volp->ro.ID)
477 else if (fidp->volume == volp->bk.ID)
483 lock_ReleaseWrite(&cm_serverLock);
485 if (fidp && errorCode == VMOVED)
486 cm_ForceUpdateVolume(fidp, userp, reqp);
489 cm_UpdateVolumeStatus(volp, statep->ID);
494 cm_FreeServerList(&serversp, 0);
495 *serverspp = serversp;
499 } else if ( errorCode == VNOVNODE ) {
502 osi_Log4(afsd_logp, "cm_Analyze passed VNOVNODE cell %u vol %u vn %u uniq %u.",
503 fidp->cell, fidp->volume, fidp->vnode, fidp->unique);
505 scp = cm_FindSCache(fidp);
507 cm_scache_t *pscp = NULL;
509 if (scp->fileType != CM_SCACHETYPE_DIRECTORY)
510 pscp = cm_FindSCacheParent(scp);
513 lock_ObtainMutex(&scp->mx);
514 lock_ObtainWrite(&cm_scacheLock);
515 cm_RemoveSCacheFromHashTable(scp);
516 lock_ReleaseWrite(&cm_scacheLock);
517 scp->flags |= CM_SCACHEFLAG_DELETED;
518 lock_ReleaseMutex(&scp->mx);
519 cm_ReleaseSCache(scp);
522 if (cm_HaveCallback(pscp)) {
523 lock_ObtainMutex(&pscp->mx);
524 cm_DiscardSCache(pscp);
525 lock_ReleaseMutex(&pscp->mx);
527 cm_ReleaseSCache(pscp);
531 osi_Log0(afsd_logp, "cm_Analyze passed VNOVNODE unknown fid.");
536 else if (errorCode == RX_CALL_TIMEOUT) {
537 /* server took longer than hardDeadTime
538 * don't mark server as down but don't retry
539 * this is to prevent the SMB session from timing out
540 * In addition, we log an event to the event log
543 /* Log server being offline for this volume */
544 sprintf(addr, "%d.%d.%d.%d",
545 ((serverp->addr.sin_addr.s_addr & 0xff)),
546 ((serverp->addr.sin_addr.s_addr & 0xff00)>> 8),
547 ((serverp->addr.sin_addr.s_addr & 0xff0000)>> 16),
548 ((serverp->addr.sin_addr.s_addr & 0xff000000)>> 24));
550 LogEvent(EVENTLOG_WARNING_TYPE, MSG_RX_HARD_DEAD_TIME_EXCEEDED, addr);
553 osi_Log1(afsd_logp, "cm_Analyze: hardDeadTime exceeded addr[%s]",
554 osi_LogSaveString(afsd_logp,addr));
556 else if (errorCode >= -64 && errorCode < 0) {
557 /* mark server as down */
558 lock_ObtainMutex(&serverp->mx);
559 if (reqp->flags & CM_REQ_NEW_CONN_FORCED) {
560 if (!(serverp->flags & CM_SERVERFLAG_DOWN)) {
561 serverp->flags |= CM_SERVERFLAG_DOWN;
562 serverp->downTime = time(NULL);
565 reqp->flags |= CM_REQ_NEW_CONN_FORCED;
568 lock_ReleaseMutex(&serverp->mx);
569 cm_ForceNewConnections(serverp);
573 else if (errorCode == RXKADEXPIRED || errorCode == RXKADBADTICKET) {
575 lock_ObtainMutex(&userp->mx);
576 ucellp = cm_GetUCell(userp, serverp->cellp);
577 if (ucellp->ticketp) {
578 free(ucellp->ticketp);
579 ucellp->ticketp = NULL;
581 ucellp->flags &= ~CM_UCELLFLAG_RXKAD;
583 lock_ReleaseMutex(&userp->mx);
587 } else if (errorCode == VICECONNBAD || errorCode == VICETOKENDEAD) {
588 cm_ForceNewConnections(serverp);
593 char * s = "unknown error";
594 switch ( errorCode ) {
595 case RXKADINCONSISTENCY: s = "RXKADINCONSISTENCY"; break;
596 case RXKADPACKETSHORT : s = "RXKADPACKETSHORT"; break;
597 case RXKADLEVELFAIL : s = "RXKADLEVELFAIL"; break;
598 case RXKADTICKETLEN : s = "RXKADTICKETLEN"; break;
599 case RXKADOUTOFSEQUENCE: s = "RXKADOUTOFSEQUENCE"; break;
600 case RXKADNOAUTH : s = "RXKADNOAUTH"; break;
601 case RXKADBADKEY : s = "RXKADBADKEY"; break;
602 case RXKADBADTICKET : s = "RXKADBADTICKET"; break;
603 case RXKADUNKNOWNKEY : s = "RXKADUNKNOWNKEY"; break;
604 case RXKADEXPIRED : s = "RXKADEXPIRED"; break;
605 case RXKADSEALEDINCON : s = "RXKADSEALEDINCON"; break;
606 case RXKADDATALEN : s = "RXKADDATALEN"; break;
607 case RXKADILLEGALLEVEL : s = "RXKADILLEGALLEVEL"; break;
608 case VSALVAGE : s = "VSALVAGE"; break;
609 case VNOVNODE : s = "VNOVNODE"; break;
610 case VNOVOL : s = "VNOVOL"; break;
611 case VVOLEXISTS : s = "VVOLEXISTS"; break;
612 case VNOSERVICE : s = "VNOSERVICE"; break;
613 case VOFFLINE : s = "VOFFLINE"; break;
614 case VONLINE : s = "VONLINE"; break;
615 case VDISKFULL : s = "VDISKFULL"; break;
616 case VOVERQUOTA : s = "VOVERQUOTA"; break;
617 case VBUSY : s = "VBUSY"; break;
618 case VMOVED : s = "VMOVED"; break;
619 case VIO : s = "VIO"; break;
620 case VRESTRICTED : s = "VRESTRICTED"; break;
621 case VRESTARTING : s = "VRESTARTING"; break;
622 case VREADONLY : s = "VREADONLY"; break;
623 case EAGAIN : s = "EAGAIN"; break;
624 case UAEAGAIN : s = "UAEAGAIN"; break;
625 case EINVAL : s = "EINVAL"; break;
626 case UAEINVAL : s = "UAEINVAL"; break;
627 case EACCES : s = "EACCES"; break;
628 case UAEACCES : s = "UAEACCES"; break;
629 case ENOENT : s = "ENOENT"; break;
630 case UAENOENT : s = "UAENOENT"; break;
631 case VICECONNBAD : s = "VICECONNBAD"; break;
632 case VICETOKENDEAD : s = "VICETOKENDEAD"; break;
633 case WSAEWOULDBLOCK : s = "WSAEWOULDBLOCK"; break;
634 case UAEWOULDBLOCK : s = "UAEWOULDBLOCK"; break;
635 case CM_ERROR_NOSUCHCELL : s = "CM_ERROR_NOSUCHCELL"; break;
636 case CM_ERROR_NOSUCHVOLUME : s = "CM_ERROR_NOSUCHVOLUME"; break;
637 case CM_ERROR_TIMEDOUT : s = "CM_ERROR_TIMEDOUT"; break;
638 case CM_ERROR_RETRY : s = "CM_ERROR_RETRY"; break;
639 case CM_ERROR_NOACCESS : s = "CM_ERROR_NOACCESS"; break;
640 case CM_ERROR_NOSUCHFILE : s = "CM_ERROR_NOSUCHFILE"; break;
641 case CM_ERROR_STOPNOW : s = "CM_ERROR_STOPNOW"; break;
642 case CM_ERROR_TOOBIG : s = "CM_ERROR_TOOBIG"; break;
643 case CM_ERROR_INVAL : s = "CM_ERROR_INVAL"; break;
644 case CM_ERROR_BADFD : s = "CM_ERROR_BADFD"; break;
645 case CM_ERROR_BADFDOP : s = "CM_ERROR_BADFDOP"; break;
646 case CM_ERROR_EXISTS : s = "CM_ERROR_EXISTS"; break;
647 case CM_ERROR_CROSSDEVLINK : s = "CM_ERROR_CROSSDEVLINK"; break;
648 case CM_ERROR_BADOP : s = "CM_ERROR_BADOP"; break;
649 case CM_ERROR_BADPASSWORD : s = "CM_ERROR_BADPASSWORD"; break;
650 case CM_ERROR_NOTDIR : s = "CM_ERROR_NOTDIR"; break;
651 case CM_ERROR_ISDIR : s = "CM_ERROR_ISDIR"; break;
652 case CM_ERROR_READONLY : s = "CM_ERROR_READONLY"; break;
653 case CM_ERROR_WOULDBLOCK : s = "CM_ERROR_WOULDBLOCK"; break;
654 case CM_ERROR_QUOTA : s = "CM_ERROR_QUOTA"; break;
655 case CM_ERROR_SPACE : s = "CM_ERROR_SPACE"; break;
656 case CM_ERROR_BADSHARENAME : s = "CM_ERROR_BADSHARENAME"; break;
657 case CM_ERROR_BADTID : s = "CM_ERROR_BADTID"; break;
658 case CM_ERROR_UNKNOWN : s = "CM_ERROR_UNKNOWN"; break;
659 case CM_ERROR_NOMORETOKENS : s = "CM_ERROR_NOMORETOKENS"; break;
660 case CM_ERROR_NOTEMPTY : s = "CM_ERROR_NOTEMPTY"; break;
661 case CM_ERROR_USESTD : s = "CM_ERROR_USESTD"; break;
662 case CM_ERROR_REMOTECONN : s = "CM_ERROR_REMOTECONN"; break;
663 case CM_ERROR_ATSYS : s = "CM_ERROR_ATSYS"; break;
664 case CM_ERROR_NOSUCHPATH : s = "CM_ERROR_NOSUCHPATH"; break;
665 case CM_ERROR_CLOCKSKEW : s = "CM_ERROR_CLOCKSKEW"; break;
666 case CM_ERROR_BADSMB : s = "CM_ERROR_BADSMB"; break;
667 case CM_ERROR_ALLBUSY : s = "CM_ERROR_ALLBUSY"; break;
668 case CM_ERROR_NOFILES : s = "CM_ERROR_NOFILES"; break;
669 case CM_ERROR_PARTIALWRITE : s = "CM_ERROR_PARTIALWRITE"; break;
670 case CM_ERROR_NOIPC : s = "CM_ERROR_NOIPC"; break;
671 case CM_ERROR_BADNTFILENAME : s = "CM_ERROR_BADNTFILENAME"; break;
672 case CM_ERROR_BUFFERTOOSMALL : s = "CM_ERROR_BUFFERTOOSMALL"; break;
673 case CM_ERROR_RENAME_IDENTICAL : s = "CM_ERROR_RENAME_IDENTICAL"; break;
674 case CM_ERROR_ALLOFFLINE : s = "CM_ERROR_ALLOFFLINE"; break;
675 case CM_ERROR_AMBIGUOUS_FILENAME: s = "CM_ERROR_AMBIGUOUS_FILENAME"; break;
676 case CM_ERROR_BADLOGONTYPE : s = "CM_ERROR_BADLOGONTYPE"; break;
677 case CM_ERROR_GSSCONTINUE : s = "CM_ERROR_GSSCONTINUE"; break;
678 case CM_ERROR_TIDIPC : s = "CM_ERROR_TIDIPC"; break;
679 case CM_ERROR_TOO_MANY_SYMLINKS : s = "CM_ERROR_TOO_MANY_SYMLINKS"; break;
680 case CM_ERROR_PATH_NOT_COVERED : s = "CM_ERROR_PATH_NOT_COVERED"; break;
681 case CM_ERROR_LOCK_CONFLICT : s = "CM_ERROR_LOCK_CONFLICT"; break;
682 case CM_ERROR_SHARING_VIOLATION : s = "CM_ERROR_SHARING_VIOLATION"; break;
683 case CM_ERROR_ALLDOWN : s = "CM_ERROR_ALLDOWN"; break;
684 case CM_ERROR_TOOFEWBUFS : s = "CM_ERROR_TOOFEWBUFS"; break;
685 case CM_ERROR_TOOMANYBUFS : s = "CM_ERROR_TOOMANYBUFS"; break;
687 osi_Log2(afsd_logp, "cm_Analyze: ignoring error code 0x%x (%s)",
693 /* If not allowed to retry, don't */
694 if (!forcing_new && (reqp->flags & CM_REQ_NORETRY))
696 else if (retry && dead_session)
700 /* drop this on the way out */
704 /* retry until we fail to find a connection */
708 long cm_ConnByMServers(cm_serverRef_t *serversp, cm_user_t *usersp,
709 cm_req_t *reqp, cm_conn_t **connpp)
712 cm_serverRef_t *tsrp;
715 int someBusy = 0, someOffline = 0, allOffline = 1, allBusy = 1, allDown = 1;
716 long timeUsed, timeLeft, hardTimeLeft;
720 if (serversp == NULL) {
721 osi_Log1(afsd_logp, "cm_ConnByMServers returning 0x%x", CM_ERROR_ALLDOWN);
722 return CM_ERROR_ALLDOWN;
725 timeUsed = (GetTickCount() - reqp->startTime) / 1000;
727 /* leave 5 seconds margin of safety */
728 timeLeft = ConnDeadtimeout - timeUsed - 5;
729 hardTimeLeft = HardDeadtimeout - timeUsed - 5;
731 lock_ObtainWrite(&cm_serverLock);
732 for (tsrp = serversp; tsrp; tsrp=tsrp->next) {
734 cm_GetServerNoLock(tsp);
735 lock_ReleaseWrite(&cm_serverLock);
736 if (!(tsp->flags & CM_SERVERFLAG_DOWN)) {
738 if (tsrp->status == srv_deleted) {
739 /* skip this entry. no longer valid. */;
740 } else if (tsrp->status == srv_busy) {
743 } else if (tsrp->status == srv_offline) {
749 code = cm_ConnByServer(tsp, usersp, connpp);
750 if (code == 0) { /* cm_CBS only returns 0 */
752 /* Set RPC timeout */
753 if (timeLeft > ConnDeadtimeout)
754 timeLeft = ConnDeadtimeout;
756 if (hardTimeLeft > HardDeadtimeout)
757 hardTimeLeft = HardDeadtimeout;
759 lock_ObtainMutex(&(*connpp)->mx);
760 rx_SetConnDeadTime((*connpp)->callp, timeLeft);
761 rx_SetConnHardDeadTime((*connpp)->callp, (u_short) hardTimeLeft);
762 lock_ReleaseMutex(&(*connpp)->mx);
766 /* therefore, this code is never executed */
771 lock_ObtainWrite(&cm_serverLock);
772 cm_PutServerNoLock(tsp);
774 lock_ReleaseWrite(&cm_serverLock);
776 if (firstError == 0) {
778 firstError = CM_ERROR_ALLDOWN;
780 firstError = CM_ERROR_ALLBUSY;
781 else if (allOffline || (someBusy && someOffline))
782 firstError = CM_ERROR_ALLOFFLINE;
784 osi_Log0(afsd_logp, "cm_ConnByMServers returning impossible error TIMEDOUT");
785 firstError = CM_ERROR_TIMEDOUT;
789 osi_Log1(afsd_logp, "cm_ConnByMServers returning 0x%x", firstError);
793 /* called with a held server to GC all bad connections hanging off of the server */
794 void cm_GCConnections(cm_server_t *serverp)
800 lock_ObtainWrite(&cm_connLock);
801 lcpp = &serverp->connsp;
802 for (tcp = *lcpp; tcp; tcp = *lcpp) {
804 if (userp && tcp->refCount == 0 && (userp->vcRefs == 0)) {
805 /* do the deletion of this guy */
806 cm_PutServer(tcp->serverp);
807 cm_ReleaseUser(userp);
809 rx_DestroyConnection(tcp->callp);
810 lock_FinalizeMutex(&tcp->mx);
814 /* just advance to the next */
818 lock_ReleaseWrite(&cm_connLock);
821 static void cm_NewRXConnection(cm_conn_t *tcp, cm_ucell_t *ucellp,
822 cm_server_t *serverp)
827 struct rx_securityClass *secObjp;
829 if (serverp->type == CM_SERVER_VLDB) {
834 osi_assertx(serverp->type == CM_SERVER_FILE, "incorrect server type");
838 if (ucellp->flags & CM_UCELLFLAG_RXKAD) {
841 tcp->cryptlevel = rxkad_crypt;
843 tcp->cryptlevel = rxkad_clear;
845 secObjp = rxkad_NewClientSecurityObject(tcp->cryptlevel,
846 &ucellp->sessionKey, ucellp->kvno,
847 ucellp->ticketLen, ucellp->ticketp);
851 tcp->cryptlevel = rxkad_clear;
852 secObjp = rxnull_NewClientSecurityObject();
854 osi_assertx(secObjp != NULL, "null rx_securityClass");
855 tcp->callp = rx_NewConnection(serverp->addr.sin_addr.s_addr,
860 rx_SetConnDeadTime(tcp->callp, ConnDeadtimeout);
861 rx_SetConnHardDeadTime(tcp->callp, HardDeadtimeout);
862 tcp->ucgen = ucellp->gen;
864 rxs_Release(secObjp); /* Decrement the initial refCount */
867 long cm_ConnByServer(cm_server_t *serverp, cm_user_t *userp, cm_conn_t **connpp)
874 lock_ObtainMutex(&userp->mx);
875 lock_ObtainWrite(&cm_connLock);
876 for (tcp = serverp->connsp; tcp; tcp=tcp->nextp) {
877 if (tcp->userp == userp)
881 /* find ucell structure */
882 ucellp = cm_GetUCell(userp, serverp->cellp);
884 cm_GetServer(serverp);
885 tcp = malloc(sizeof(*tcp));
886 memset(tcp, 0, sizeof(*tcp));
887 tcp->nextp = serverp->connsp;
888 serverp->connsp = tcp;
891 lock_InitializeMutex(&tcp->mx, "cm_conn_t mutex");
892 lock_ObtainMutex(&tcp->mx);
893 tcp->serverp = serverp;
894 tcp->cryptlevel = rxkad_clear;
895 cm_NewRXConnection(tcp, ucellp, serverp);
897 lock_ReleaseMutex(&tcp->mx);
899 if ((tcp->flags & CM_CONN_FLAG_FORCE_NEW) ||
900 (tcp->ucgen < ucellp->gen) ||
901 (tcp->cryptlevel != (cryptall ? (ucellp->flags & CM_UCELLFLAG_RXKAD ? rxkad_crypt : rxkad_clear) : rxkad_clear)))
903 if (tcp->ucgen < ucellp->gen)
904 osi_Log0(afsd_logp, "cm_ConnByServer replace connection due to token update");
906 osi_Log0(afsd_logp, "cm_ConnByServer replace connection due to crypt change");
907 lock_ObtainMutex(&tcp->mx);
908 tcp->flags &= ~CM_CONN_FLAG_FORCE_NEW;
909 rx_DestroyConnection(tcp->callp);
910 cm_NewRXConnection(tcp, ucellp, serverp);
911 lock_ReleaseMutex(&tcp->mx);
915 lock_ReleaseWrite(&cm_connLock);
916 lock_ReleaseMutex(&userp->mx);
918 /* return this pointer to our caller */
919 osi_Log1(afsd_logp, "cm_ConnByServer returning conn 0x%p", tcp);
925 long cm_ServerAvailable(struct cm_fid *fidp, struct cm_user *userp)
929 cm_serverRef_t **serverspp;
930 cm_serverRef_t *tsrp;
932 int someBusy = 0, someOffline = 0, allOffline = 1, allBusy = 1, allDown = 1;
936 code = cm_GetServerList(fidp, userp, &req, &serverspp);
940 lock_ObtainWrite(&cm_serverLock);
941 for (tsrp = *serverspp; tsrp; tsrp=tsrp->next) {
943 cm_GetServerNoLock(tsp);
944 if (!(tsp->flags & CM_SERVERFLAG_DOWN)) {
946 if (tsrp->status == srv_busy) {
949 } else if (tsrp->status == srv_offline) {
957 cm_PutServerNoLock(tsp);
959 lock_ReleaseWrite(&cm_serverLock);
960 cm_FreeServerList(serverspp, 0);
966 else if (allOffline || (someBusy && someOffline))
973 * The returned cm_conn_t ** object is released in the subsequent call
976 long cm_ConnFromFID(struct cm_fid *fidp, struct cm_user *userp, cm_req_t *reqp,
980 cm_serverRef_t **serverspp;
984 code = cm_GetServerList(fidp, userp, reqp, &serverspp);
989 code = cm_ConnByMServers(*serverspp, userp, reqp, connpp);
990 cm_FreeServerList(serverspp, 0);
995 long cm_ConnFromVolume(struct cm_volume *volp, unsigned long volid, struct cm_user *userp, cm_req_t *reqp,
999 cm_serverRef_t **serverspp;
1003 serverspp = cm_GetVolServers(volp, volid);
1005 code = cm_ConnByMServers(*serverspp, userp, reqp, connpp);
1006 cm_FreeServerList(serverspp, 0);
1011 extern struct rx_connection *
1012 cm_GetRxConn(cm_conn_t *connp)
1014 struct rx_connection * rxconn;
1015 lock_ObtainMutex(&connp->mx);
1016 rxconn = connp->callp;
1017 rx_GetConnection(rxconn);
1018 lock_ReleaseMutex(&connp->mx);
1022 void cm_ForceNewConnections(cm_server_t *serverp)
1026 lock_ObtainWrite(&cm_connLock);
1027 for (tcp = serverp->connsp; tcp; tcp=tcp->nextp) {
1028 lock_ObtainMutex(&tcp->mx);
1029 tcp->flags |= CM_CONN_FLAG_FORCE_NEW;
1030 lock_ReleaseMutex(&tcp->mx);
1032 lock_ReleaseWrite(&cm_connLock);