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;
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;
162 int free_svr_list = 0;
164 long timeUsed, timeLeft;
169 osi_Log2(afsd_logp, "cm_Analyze connp 0x%p, code 0x%x",
172 /* no locking required, since connp->serverp never changes after
174 dead_session = (userp->cellInfop == NULL);
176 serverp = connp->serverp;
178 /* Update callback pointer */
179 if (cbrp && serverp && errorCode == 0) {
181 if ( cbrp->serverp != serverp ) {
182 lock_ObtainWrite(&cm_serverLock);
183 cm_PutServerNoLock(cbrp->serverp);
184 cm_GetServerNoLock(serverp);
185 lock_ReleaseWrite(&cm_serverLock);
188 cm_GetServer(serverp);
190 lock_ObtainWrite(&cm_callbackLock);
191 cbrp->serverp = serverp;
192 lock_ReleaseWrite(&cm_callbackLock);
195 /* if timeout - check that it did not exceed the HardDead timeout
198 /* timeleft - get if from reqp the same way as cmXonnByMServers does */
199 timeUsed = (GetTickCount() - reqp->startTime) / 1000;
201 /* leave 5 seconds margin for sleep */
202 timeLeft = HardDeadtimeout - timeUsed;
204 /* get a pointer to the cell */
206 if (cellp == NULL && serverp)
207 cellp = serverp->cellp;
208 if (cellp == NULL && serversp) {
209 struct cm_serverRef * refp;
210 for ( refp=serversp ; cellp == NULL && refp != NULL; refp=refp->next) {
212 cellp = refp->server->cellp;
217 if (errorCode == CM_ERROR_TIMEDOUT) {
220 cm_CheckServers(CM_FLAG_CHECKDOWNSERVERS, cellp);
225 /* if there is nosuchvolume, then we have a situation in which a
226 * previously known volume no longer has a set of servers
227 * associated with it. Either the volume has moved or
228 * the volume has been deleted. Try to find a new server list
229 * until the timeout period expires.
231 else if (errorCode == CM_ERROR_NOSUCHVOLUME) {
232 osi_Log0(afsd_logp, "cm_Analyze passed CM_ERROR_NOSUCHVOLUME.");
238 if (fidp != NULL) /* Not a VLDB call */
239 cm_ForceUpdateVolume(fidp, userp, reqp);
243 else if (errorCode == CM_ERROR_ALLDOWN) {
244 osi_Log0(afsd_logp, "cm_Analyze passed CM_ERROR_ALLDOWN.");
245 /* Servers marked DOWN will be restored by the background daemon
246 * thread as they become available.
250 else if (errorCode == CM_ERROR_ALLOFFLINE) {
251 osi_Log0(afsd_logp, "cm_Analyze passed CM_ERROR_ALLOFFLINE.");
252 /* Volume instances marked offline will be restored by the
253 * background daemon thread as they become available
255 if (timeLeft > 7 && fidp) {
257 cm_vol_state_t *statep;
261 code = cm_GetVolumeByID(cellp, fidp->volume, userp, reqp,
262 CM_GETVOL_FLAG_NO_LRU_UPDATE,
265 if (fidp->volume == volp->rw.ID)
267 else if (fidp->volume == volp->ro.ID)
269 else if (fidp->volume == volp->bk.ID)
272 if (statep->state != vl_offline) {
275 if (cm_CheckOfflineVolume(volp, statep->ID))
283 else if (errorCode == CM_ERROR_ALLBUSY) {
284 /* Volumes that are busy cannot be determined to be non-busy
285 * without actually attempting to access them.
287 osi_Log0(afsd_logp, "cm_Analyze passed CM_ERROR_ALLBUSY.");
289 cm_volume_t * volp = NULL;
290 cm_vol_state_t *statep;
294 if (fidp) { /* File Server query */
295 code = cm_GetVolumeByID(cellp, fidp->volume, userp, reqp,
296 CM_GETVOL_FLAG_NO_LRU_UPDATE,
299 if (fidp->volume == volp->rw.ID)
301 else if (fidp->volume == volp->ro.ID)
303 else if (fidp->volume == volp->bk.ID)
306 if (statep->state != vl_offline && statep->state != vl_busy) {
310 code = cm_GetServerList(fidp, userp, reqp, &serverspp);
312 serversp = *serverspp;
316 lock_ObtainWrite(&cm_serverLock);
317 for (tsrp = serversp; tsrp; tsrp=tsrp->next) {
318 if (tsrp->status == srv_busy) {
319 tsrp->status = srv_not_busy;
322 lock_ReleaseWrite(&cm_serverLock);
324 cm_FreeServerList(&serversp, 0);
325 *serverspp = serversp;
328 cm_UpdateVolumeStatus(volp, statep->ID);
334 } else { /* VL Server query */
336 lock_ObtainWrite(&cm_serverLock);
337 for (tsrp = serversp; tsrp; tsrp=tsrp->next) {
338 if (tsrp->status == srv_busy) {
339 tsrp->status = srv_not_busy;
342 lock_ReleaseWrite(&cm_serverLock);
349 /* special codes: VBUSY and VRESTARTING */
350 else if (errorCode == VBUSY || errorCode == VRESTARTING) {
352 code = cm_GetServerList(fidp, userp, reqp, &serverspp);
354 serversp = *serverspp;
358 lock_ObtainWrite(&cm_serverLock);
359 for (tsrp = serversp; tsrp; tsrp=tsrp->next) {
360 if (tsrp->server == serverp && tsrp->status == srv_not_busy) {
362 tsrp->status = srv_busy;
366 lock_ReleaseWrite(&cm_serverLock);
368 cm_FreeServerList(&serversp, 0);
369 *serverspp = serversp;
374 /* special codes: missing volumes */
375 else if (errorCode == VNOVOL || errorCode == VMOVED || errorCode == VOFFLINE ||
376 errorCode == VSALVAGE || errorCode == VNOSERVICE || errorCode == VIO)
381 switch ( errorCode ) {
383 msgID = MSG_SERVER_REPORTS_VNOVOL;
384 format = "Server %s reported volume %d as not attached.";
387 msgID = MSG_SERVER_REPORTS_VMOVED;
388 format = "Server %s reported volume %d as moved.";
391 msgID = MSG_SERVER_REPORTS_VOFFLINE;
392 format = "Server %s reported volume %d as offline.";
395 msgID = MSG_SERVER_REPORTS_VSALVAGE;
396 format = "Server %s reported volume %d as needs salvage.";
399 msgID = MSG_SERVER_REPORTS_VNOSERVICE;
400 format = "Server %s reported volume %d as not in service.";
403 msgID = MSG_SERVER_REPORTS_VIO;
404 format = "Server %s reported volume %d as temporarily unaccessible.";
408 /* Log server being offline for this volume */
409 sprintf(addr, "%d.%d.%d.%d",
410 ((serverp->addr.sin_addr.s_addr & 0xff)),
411 ((serverp->addr.sin_addr.s_addr & 0xff00)>> 8),
412 ((serverp->addr.sin_addr.s_addr & 0xff0000)>> 16),
413 ((serverp->addr.sin_addr.s_addr & 0xff000000)>> 24));
415 osi_Log2(afsd_logp, format, osi_LogSaveString(afsd_logp,addr), fidp->volume);
416 LogEvent(EVENTLOG_WARNING_TYPE, msgID, addr, fidp->volume);
418 /* Mark server offline for this volume */
420 code = cm_GetServerList(fidp, userp, reqp, &serverspp);
422 serversp = *serverspp;
426 for (tsrp = serversp; tsrp; tsrp=tsrp->next) {
427 if (tsrp->server == serverp) {
429 if (errorCode == VNOVOL || errorCode == VMOVED) {
430 tsrp->status = srv_deleted;
432 cm_ForceUpdateVolume(fidp, userp, reqp);
435 tsrp->status = srv_offline;
439 cm_FreeServerList(&serversp, 0);
440 *serverspp = serversp;
444 } else if ( errorCode == VNOVNODE ) {
447 osi_Log4(afsd_logp, "cm_Analyze passed VNOVNODE cell %u vol %u vn %u uniq %u.",
448 fidp->cell, fidp->volume, fidp->vnode, fidp->unique);
450 scp = cm_FindSCache(fidp);
452 cm_scache_t *pscp = NULL;
454 if (scp->fileType != CM_SCACHETYPE_DIRECTORY)
455 pscp = cm_FindSCacheParent(scp);
458 lock_ObtainMutex(&scp->mx);
459 lock_ObtainWrite(&cm_scacheLock);
460 cm_RemoveSCacheFromHashTable(scp);
461 lock_ReleaseWrite(&cm_scacheLock);
462 scp->flags |= CM_SCACHEFLAG_DELETED;
463 lock_ReleaseMutex(&scp->mx);
464 cm_ReleaseSCache(scp);
467 if (cm_HaveCallback(pscp)) {
468 lock_ObtainMutex(&pscp->mx);
469 cm_DiscardSCache(pscp);
470 lock_ReleaseMutex(&pscp->mx);
472 cm_ReleaseSCache(pscp);
476 osi_Log0(afsd_logp, "cm_Analyze passed VNOVNODE unknown fid.");
481 else if (errorCode == RX_CALL_TIMEOUT) {
482 /* server took longer than hardDeadTime
483 * don't mark server as down but don't retry
484 * this is to prevent the SMB session from timing out
485 * In addition, we log an event to the event log
488 /* Log server being offline for this volume */
489 sprintf(addr, "%d.%d.%d.%d",
490 ((serverp->addr.sin_addr.s_addr & 0xff)),
491 ((serverp->addr.sin_addr.s_addr & 0xff00)>> 8),
492 ((serverp->addr.sin_addr.s_addr & 0xff0000)>> 16),
493 ((serverp->addr.sin_addr.s_addr & 0xff000000)>> 24));
495 LogEvent(EVENTLOG_WARNING_TYPE, MSG_RX_HARD_DEAD_TIME_EXCEEDED, addr);
498 osi_Log1(afsd_logp, "cm_Analyze: hardDeadTime exceeded addr[%s]",
499 osi_LogSaveString(afsd_logp,addr));
501 else if (errorCode >= -64 && errorCode < 0) {
502 /* mark server as down */
503 lock_ObtainMutex(&serverp->mx);
504 if (reqp->flags & CM_REQ_NEW_CONN_FORCED)
505 serverp->flags |= CM_SERVERFLAG_DOWN;
507 reqp->flags |= CM_REQ_NEW_CONN_FORCED;
510 lock_ReleaseMutex(&serverp->mx);
511 cm_ForceNewConnections(serverp);
515 else if (errorCode == RXKADEXPIRED || errorCode == RXKADBADTICKET) {
517 lock_ObtainMutex(&userp->mx);
518 ucellp = cm_GetUCell(userp, serverp->cellp);
519 if (ucellp->ticketp) {
520 free(ucellp->ticketp);
521 ucellp->ticketp = NULL;
523 ucellp->flags &= ~CM_UCELLFLAG_RXKAD;
525 lock_ReleaseMutex(&userp->mx);
529 } else if (errorCode == VICECONNBAD || errorCode == VICETOKENDEAD) {
530 cm_ForceNewConnections(serverp);
535 char * s = "unknown error";
536 switch ( errorCode ) {
537 case RXKADINCONSISTENCY: s = "RXKADINCONSISTENCY"; break;
538 case RXKADPACKETSHORT : s = "RXKADPACKETSHORT"; break;
539 case RXKADLEVELFAIL : s = "RXKADLEVELFAIL"; break;
540 case RXKADTICKETLEN : s = "RXKADTICKETLEN"; break;
541 case RXKADOUTOFSEQUENCE: s = "RXKADOUTOFSEQUENCE"; break;
542 case RXKADNOAUTH : s = "RXKADNOAUTH"; break;
543 case RXKADBADKEY : s = "RXKADBADKEY"; break;
544 case RXKADBADTICKET : s = "RXKADBADTICKET"; break;
545 case RXKADUNKNOWNKEY : s = "RXKADUNKNOWNKEY"; break;
546 case RXKADEXPIRED : s = "RXKADEXPIRED"; break;
547 case RXKADSEALEDINCON : s = "RXKADSEALEDINCON"; break;
548 case RXKADDATALEN : s = "RXKADDATALEN"; break;
549 case RXKADILLEGALLEVEL : s = "RXKADILLEGALLEVEL"; break;
550 case VSALVAGE : s = "VSALVAGE"; break;
551 case VNOVNODE : s = "VNOVNODE"; break;
552 case VNOVOL : s = "VNOVOL"; break;
553 case VVOLEXISTS : s = "VVOLEXISTS"; break;
554 case VNOSERVICE : s = "VNOSERVICE"; break;
555 case VOFFLINE : s = "VOFFLINE"; break;
556 case VONLINE : s = "VONLINE"; break;
557 case VDISKFULL : s = "VDISKFULL"; break;
558 case VOVERQUOTA : s = "VOVERQUOTA"; break;
559 case VBUSY : s = "VBUSY"; break;
560 case VMOVED : s = "VMOVED"; break;
561 case VIO : s = "VIO"; break;
562 case VRESTRICTED : s = "VRESTRICTED"; break;
563 case VRESTARTING : s = "VRESTARTING"; break;
564 case VREADONLY : s = "VREADONLY"; break;
565 case EAGAIN : s = "EAGAIN"; break;
566 case UAEAGAIN : s = "UAEAGAIN"; break;
567 case EINVAL : s = "EINVAL"; break;
568 case UAEINVAL : s = "UAEINVAL"; break;
569 case EACCES : s = "EACCES"; break;
570 case UAEACCES : s = "UAEACCES"; break;
571 case ENOENT : s = "ENOENT"; break;
572 case UAENOENT : s = "UAENOENT"; break;
573 case VICECONNBAD : s = "VICECONNBAD"; break;
574 case VICETOKENDEAD : s = "VICETOKENDEAD"; break;
575 case CM_ERROR_NOSUCHCELL : s = "CM_ERROR_NOSUCHCELL"; break;
576 case CM_ERROR_NOSUCHVOLUME : s = "CM_ERROR_NOSUCHVOLUME"; break;
577 case CM_ERROR_TIMEDOUT : s = "CM_ERROR_TIMEDOUT"; break;
578 case CM_ERROR_RETRY : s = "CM_ERROR_RETRY"; break;
579 case CM_ERROR_NOACCESS : s = "CM_ERROR_NOACCESS"; break;
580 case CM_ERROR_NOSUCHFILE : s = "CM_ERROR_NOSUCHFILE"; break;
581 case CM_ERROR_STOPNOW : s = "CM_ERROR_STOPNOW"; break;
582 case CM_ERROR_TOOBIG : s = "CM_ERROR_TOOBIG"; break;
583 case CM_ERROR_INVAL : s = "CM_ERROR_INVAL"; break;
584 case CM_ERROR_BADFD : s = "CM_ERROR_BADFD"; break;
585 case CM_ERROR_BADFDOP : s = "CM_ERROR_BADFDOP"; break;
586 case CM_ERROR_EXISTS : s = "CM_ERROR_EXISTS"; break;
587 case CM_ERROR_CROSSDEVLINK : s = "CM_ERROR_CROSSDEVLINK"; break;
588 case CM_ERROR_BADOP : s = "CM_ERROR_BADOP"; break;
589 case CM_ERROR_BADPASSWORD : s = "CM_ERROR_BADPASSWORD"; break;
590 case CM_ERROR_NOTDIR : s = "CM_ERROR_NOTDIR"; break;
591 case CM_ERROR_ISDIR : s = "CM_ERROR_ISDIR"; break;
592 case CM_ERROR_READONLY : s = "CM_ERROR_READONLY"; break;
593 case CM_ERROR_WOULDBLOCK : s = "CM_ERROR_WOULDBLOCK"; break;
594 case CM_ERROR_QUOTA : s = "CM_ERROR_QUOTA"; break;
595 case CM_ERROR_SPACE : s = "CM_ERROR_SPACE"; break;
596 case CM_ERROR_BADSHARENAME : s = "CM_ERROR_BADSHARENAME"; break;
597 case CM_ERROR_BADTID : s = "CM_ERROR_BADTID"; break;
598 case CM_ERROR_UNKNOWN : s = "CM_ERROR_UNKNOWN"; break;
599 case CM_ERROR_NOMORETOKENS : s = "CM_ERROR_NOMORETOKENS"; break;
600 case CM_ERROR_NOTEMPTY : s = "CM_ERROR_NOTEMPTY"; break;
601 case CM_ERROR_USESTD : s = "CM_ERROR_USESTD"; break;
602 case CM_ERROR_REMOTECONN : s = "CM_ERROR_REMOTECONN"; break;
603 case CM_ERROR_ATSYS : s = "CM_ERROR_ATSYS"; break;
604 case CM_ERROR_NOSUCHPATH : s = "CM_ERROR_NOSUCHPATH"; break;
605 case CM_ERROR_CLOCKSKEW : s = "CM_ERROR_CLOCKSKEW"; break;
606 case CM_ERROR_BADSMB : s = "CM_ERROR_BADSMB"; break;
607 case CM_ERROR_ALLBUSY : s = "CM_ERROR_ALLBUSY"; break;
608 case CM_ERROR_NOFILES : s = "CM_ERROR_NOFILES"; break;
609 case CM_ERROR_PARTIALWRITE : s = "CM_ERROR_PARTIALWRITE"; break;
610 case CM_ERROR_NOIPC : s = "CM_ERROR_NOIPC"; break;
611 case CM_ERROR_BADNTFILENAME : s = "CM_ERROR_BADNTFILENAME"; break;
612 case CM_ERROR_BUFFERTOOSMALL : s = "CM_ERROR_BUFFERTOOSMALL"; break;
613 case CM_ERROR_RENAME_IDENTICAL : s = "CM_ERROR_RENAME_IDENTICAL"; break;
614 case CM_ERROR_ALLOFFLINE : s = "CM_ERROR_ALLOFFLINE"; break;
615 case CM_ERROR_AMBIGUOUS_FILENAME: s = "CM_ERROR_AMBIGUOUS_FILENAME"; break;
616 case CM_ERROR_BADLOGONTYPE : s = "CM_ERROR_BADLOGONTYPE"; break;
617 case CM_ERROR_GSSCONTINUE : s = "CM_ERROR_GSSCONTINUE"; break;
618 case CM_ERROR_TIDIPC : s = "CM_ERROR_TIDIPC"; break;
619 case CM_ERROR_TOO_MANY_SYMLINKS : s = "CM_ERROR_TOO_MANY_SYMLINKS"; break;
620 case CM_ERROR_PATH_NOT_COVERED : s = "CM_ERROR_PATH_NOT_COVERED"; break;
621 case CM_ERROR_LOCK_CONFLICT : s = "CM_ERROR_LOCK_CONFLICT"; break;
622 case CM_ERROR_SHARING_VIOLATION : s = "CM_ERROR_SHARING_VIOLATION"; break;
623 case CM_ERROR_ALLDOWN : s = "CM_ERROR_ALLDOWN"; break;
624 case CM_ERROR_TOOFEWBUFS : s = "CM_ERROR_TOOFEWBUFS"; break;
625 case CM_ERROR_TOOMANYBUFS : s = "CM_ERROR_TOOMANYBUFS"; break;
627 osi_Log2(afsd_logp, "cm_Analyze: ignoring error code 0x%x (%s)",
633 /* If not allowed to retry, don't */
634 if (!forcing_new && (reqp->flags & CM_REQ_NORETRY))
636 else if (retry && dead_session)
640 /* drop this on the way out */
644 /* retry until we fail to find a connection */
648 long cm_ConnByMServers(cm_serverRef_t *serversp, cm_user_t *usersp,
649 cm_req_t *reqp, cm_conn_t **connpp)
652 cm_serverRef_t *tsrp;
655 int someBusy = 0, someOffline = 0, allOffline = 1, allBusy = 1, allDown = 1;
656 long timeUsed, timeLeft, hardTimeLeft;
658 if (serversp == NULL) {
659 osi_Log1(afsd_logp, "cm_ConnByMServers returning 0x%x", CM_ERROR_ALLDOWN);
660 return CM_ERROR_ALLDOWN;
665 timeUsed = (GetTickCount() - reqp->startTime) / 1000;
667 /* leave 5 seconds margin of safety */
668 timeLeft = ConnDeadtimeout - timeUsed - 5;
669 hardTimeLeft = HardDeadtimeout - timeUsed - 5;
671 lock_ObtainWrite(&cm_serverLock);
672 for (tsrp = serversp; tsrp; tsrp=tsrp->next) {
674 cm_GetServerNoLock(tsp);
675 lock_ReleaseWrite(&cm_serverLock);
676 if (!(tsp->flags & CM_SERVERFLAG_DOWN)) {
678 if (tsrp->status == srv_deleted) {
679 /* skip this entry. no longer valid. */;
680 } else if (tsrp->status == srv_busy) {
683 } else if (tsrp->status == srv_offline) {
689 code = cm_ConnByServer(tsp, usersp, connpp);
690 if (code == 0) { /* cm_CBS only returns 0 */
692 /* Set RPC timeout */
693 if (timeLeft > ConnDeadtimeout)
694 timeLeft = ConnDeadtimeout;
696 if (hardTimeLeft > HardDeadtimeout)
697 hardTimeLeft = HardDeadtimeout;
699 lock_ObtainMutex(&(*connpp)->mx);
700 rx_SetConnDeadTime((*connpp)->callp, timeLeft);
701 rx_SetConnHardDeadTime((*connpp)->callp, (u_short) hardTimeLeft);
702 lock_ReleaseMutex(&(*connpp)->mx);
706 /* therefore, this code is never executed */
711 lock_ObtainWrite(&cm_serverLock);
712 cm_PutServerNoLock(tsp);
714 lock_ReleaseWrite(&cm_serverLock);
716 if (firstError == 0) {
718 firstError = CM_ERROR_ALLDOWN;
720 firstError = CM_ERROR_ALLBUSY;
721 else if (allOffline || (someBusy && someOffline))
722 firstError = CM_ERROR_ALLOFFLINE;
724 osi_Log0(afsd_logp, "cm_ConnByMServers returning impossible error TIMEDOUT");
725 firstError = CM_ERROR_TIMEDOUT;
729 osi_Log1(afsd_logp, "cm_ConnByMServers returning 0x%x", firstError);
733 /* called with a held server to GC all bad connections hanging off of the server */
734 void cm_GCConnections(cm_server_t *serverp)
740 lock_ObtainWrite(&cm_connLock);
741 lcpp = &serverp->connsp;
742 for (tcp = *lcpp; tcp; tcp = *lcpp) {
744 if (userp && tcp->refCount == 0 && (userp->vcRefs == 0)) {
745 /* do the deletion of this guy */
746 cm_PutServer(tcp->serverp);
747 cm_ReleaseUser(userp);
749 rx_DestroyConnection(tcp->callp);
750 lock_FinalizeMutex(&tcp->mx);
754 /* just advance to the next */
758 lock_ReleaseWrite(&cm_connLock);
761 static void cm_NewRXConnection(cm_conn_t *tcp, cm_ucell_t *ucellp,
762 cm_server_t *serverp)
767 struct rx_securityClass *secObjp;
769 if (serverp->type == CM_SERVER_VLDB) {
774 osi_assert(serverp->type == CM_SERVER_FILE);
778 if (ucellp->flags & CM_UCELLFLAG_RXKAD) {
781 tcp->cryptlevel = rxkad_crypt;
783 tcp->cryptlevel = rxkad_clear;
785 secObjp = rxkad_NewClientSecurityObject(tcp->cryptlevel,
786 &ucellp->sessionKey, ucellp->kvno,
787 ucellp->ticketLen, ucellp->ticketp);
791 tcp->cryptlevel = rxkad_clear;
792 secObjp = rxnull_NewClientSecurityObject();
794 osi_assert(secObjp != NULL);
795 tcp->callp = rx_NewConnection(serverp->addr.sin_addr.s_addr,
800 rx_SetConnDeadTime(tcp->callp, ConnDeadtimeout);
801 rx_SetConnHardDeadTime(tcp->callp, HardDeadtimeout);
802 tcp->ucgen = ucellp->gen;
804 rxs_Release(secObjp); /* Decrement the initial refCount */
807 long cm_ConnByServer(cm_server_t *serverp, cm_user_t *userp, cm_conn_t **connpp)
812 lock_ObtainMutex(&userp->mx);
813 lock_ObtainWrite(&cm_connLock);
814 for (tcp = serverp->connsp; tcp; tcp=tcp->nextp) {
815 if (tcp->userp == userp)
819 /* find ucell structure */
820 ucellp = cm_GetUCell(userp, serverp->cellp);
822 cm_GetServer(serverp);
823 tcp = malloc(sizeof(*tcp));
824 memset(tcp, 0, sizeof(*tcp));
825 tcp->nextp = serverp->connsp;
826 serverp->connsp = tcp;
829 lock_InitializeMutex(&tcp->mx, "cm_conn_t mutex");
830 lock_ObtainMutex(&tcp->mx);
831 tcp->serverp = serverp;
832 tcp->cryptlevel = rxkad_clear;
833 cm_NewRXConnection(tcp, ucellp, serverp);
835 lock_ReleaseMutex(&tcp->mx);
837 if ((tcp->flags & CM_CONN_FLAG_FORCE_NEW) ||
838 (tcp->ucgen < ucellp->gen) ||
839 (tcp->cryptlevel != (cryptall ? (ucellp->flags & CM_UCELLFLAG_RXKAD ? rxkad_crypt : rxkad_clear) : rxkad_clear)))
841 if (tcp->ucgen < ucellp->gen)
842 osi_Log0(afsd_logp, "cm_ConnByServer replace connection due to token update");
844 osi_Log0(afsd_logp, "cm_ConnByServer replace connection due to crypt change");
845 lock_ObtainMutex(&tcp->mx);
846 tcp->flags &= ~CM_CONN_FLAG_FORCE_NEW;
847 rx_DestroyConnection(tcp->callp);
848 cm_NewRXConnection(tcp, ucellp, serverp);
849 lock_ReleaseMutex(&tcp->mx);
853 lock_ReleaseWrite(&cm_connLock);
854 lock_ReleaseMutex(&userp->mx);
856 /* return this pointer to our caller */
857 osi_Log1(afsd_logp, "cm_ConnByServer returning conn 0x%p", tcp);
863 long cm_ServerAvailable(struct cm_fid *fidp, struct cm_user *userp)
867 cm_serverRef_t **serverspp;
868 cm_serverRef_t *tsrp;
870 int someBusy = 0, someOffline = 0, allOffline = 1, allBusy = 1, allDown = 1;
874 code = cm_GetServerList(fidp, userp, &req, &serverspp);
878 lock_ObtainWrite(&cm_serverLock);
879 for (tsrp = *serverspp; tsrp; tsrp=tsrp->next) {
881 cm_GetServerNoLock(tsp);
882 if (!(tsp->flags & CM_SERVERFLAG_DOWN)) {
884 if (tsrp->status == srv_busy) {
887 } else if (tsrp->status == srv_offline) {
895 cm_PutServerNoLock(tsp);
897 lock_ReleaseWrite(&cm_serverLock);
898 cm_FreeServerList(serverspp, 0);
904 else if (allOffline || (someBusy && someOffline))
911 * The returned cm_conn_t ** object is released in the subsequent call
914 long cm_ConnFromFID(struct cm_fid *fidp, struct cm_user *userp, cm_req_t *reqp,
918 cm_serverRef_t **serverspp;
920 code = cm_GetServerList(fidp, userp, reqp, &serverspp);
926 code = cm_ConnByMServers(*serverspp, userp, reqp, connpp);
927 cm_FreeServerList(serverspp, 0);
932 long cm_ConnFromVolume(struct cm_volume *volp, unsigned long volid, struct cm_user *userp, cm_req_t *reqp,
936 cm_serverRef_t **serverspp;
938 serverspp = cm_GetVolServers(volp, volid);
940 code = cm_ConnByMServers(*serverspp, userp, reqp, connpp);
941 cm_FreeServerList(serverspp, 0);
946 extern struct rx_connection *
947 cm_GetRxConn(cm_conn_t *connp)
949 struct rx_connection * rxconn;
950 lock_ObtainMutex(&connp->mx);
951 rxconn = connp->callp;
952 rx_GetConnection(rxconn);
953 lock_ReleaseMutex(&connp->mx);
957 void cm_ForceNewConnections(cm_server_t *serverp)
961 lock_ObtainWrite(&cm_connLock);
962 for (tcp = serverp->connsp; tcp; tcp=tcp->nextp) {
963 lock_ObtainMutex(&tcp->mx);
964 tcp->flags |= CM_CONN_FLAG_FORCE_NEW;
965 lock_ReleaseMutex(&tcp->mx);
967 lock_ReleaseWrite(&cm_connLock);