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 if (errorCode == CM_ERROR_TIMEDOUT) {
207 if (cellp == NULL && serverp)
208 cellp = serverp->cellp;
209 if (cellp == NULL && serversp) {
210 struct cm_serverRef * refp;
211 for ( refp=serversp ; cellp == NULL && refp != NULL; refp=refp->next) {
213 cellp = refp->server->cellp;
216 cm_CheckServers(CM_FLAG_CHECKDOWNSERVERS, cellp);
221 /* if there is nosuchvolume, then we have a situation in which a
222 * previously known volume no longer has a set of servers
223 * associated with it. Either the volume has moved or
224 * the volume has been deleted. Try to find a new server list
225 * until the timeout period expires.
227 else if (errorCode == CM_ERROR_NOSUCHVOLUME) {
228 osi_Log0(afsd_logp, "cm_Analyze passed CM_ERROR_NOSUCHVOLUME.");
234 if (fidp != NULL) /* Not a VLDB call */
235 cm_ForceUpdateVolume(fidp, userp, reqp);
239 else if (errorCode == CM_ERROR_ALLDOWN) {
240 osi_Log0(afsd_logp, "cm_Analyze passed CM_ERROR_ALLDOWN.");
241 /* Servers marked DOWN will be restored by the background daemon
242 * thread as they become available.
246 else if (errorCode == CM_ERROR_ALLOFFLINE) {
247 osi_Log0(afsd_logp, "cm_Analyze passed CM_ERROR_ALLOFFLINE.");
248 /* Volume instances marked offline will be restored by the
249 * background daemon thread as they become available
255 if (fidp) { /* Not a VLDB call */
257 code = cm_GetServerList(fidp, userp, reqp, &serverspp);
259 serversp = *serverspp;
264 lock_ObtainWrite(&cm_serverLock);
265 for (tsrp = serversp; tsrp; tsrp=tsrp->next) {
267 tsrp->status = srv_not_busy;
269 lock_ReleaseWrite(&cm_serverLock);
271 cm_FreeServerList(&serversp, 0);
272 *serverspp = serversp;
277 cm_ForceUpdateVolume(fidp, userp, reqp);
278 } else { /* VLDB call */
280 lock_ObtainWrite(&cm_serverLock);
281 for (tsrp = serversp; tsrp; tsrp=tsrp->next) {
283 tsrp->status = srv_not_busy;
285 lock_ReleaseWrite(&cm_serverLock);
287 cm_FreeServerList(&serversp, 0);
288 *serverspp = serversp;
295 else if (errorCode == CM_ERROR_ALLBUSY) {
296 /* Volume instances marked busy will be restored by the
297 * background daemon thread as they become available.
299 osi_Log0(afsd_logp, "cm_Analyze passed CM_ERROR_ALLBUSY.");
304 code = cm_GetServerList(fidp, userp, reqp, &serverspp);
306 serversp = *serverspp;
310 lock_ObtainWrite(&cm_serverLock);
311 for (tsrp = serversp; tsrp; tsrp=tsrp->next) {
312 if (tsrp->status == srv_busy) {
314 tsrp->status = srv_not_busy;
317 lock_ReleaseWrite(&cm_serverLock);
319 cm_FreeServerList(&serversp, 0);
320 *serverspp = serversp;
327 /* special codes: VBUSY and VRESTARTING */
328 else if (errorCode == VBUSY || errorCode == VRESTARTING) {
330 code = cm_GetServerList(fidp, userp, reqp, &serverspp);
332 serversp = *serverspp;
336 lock_ObtainWrite(&cm_serverLock);
337 for (tsrp = serversp; tsrp; tsrp=tsrp->next) {
338 if (tsrp->server == serverp && tsrp->status == srv_not_busy) {
340 tsrp->status = srv_busy;
344 lock_ReleaseWrite(&cm_serverLock);
346 cm_FreeServerList(&serversp, 0);
347 *serverspp = serversp;
352 /* special codes: missing volumes */
353 else if (errorCode == VNOVOL || errorCode == VMOVED || errorCode == VOFFLINE ||
354 errorCode == VSALVAGE || errorCode == VNOSERVICE || errorCode == VIO)
359 switch ( errorCode ) {
361 msgID = MSG_SERVER_REPORTS_VNOVOL;
362 format = "Server %s reported volume %d as not attached.";
365 msgID = MSG_SERVER_REPORTS_VMOVED;
366 format = "Server %s reported volume %d as moved.";
369 msgID = MSG_SERVER_REPORTS_VOFFLINE;
370 format = "Server %s reported volume %d as offline.";
373 msgID = MSG_SERVER_REPORTS_VSALVAGE;
374 format = "Server %s reported volume %d as needs salvage.";
377 msgID = MSG_SERVER_REPORTS_VNOSERVICE;
378 format = "Server %s reported volume %d as not in service.";
381 msgID = MSG_SERVER_REPORTS_VIO;
382 format = "Server %s reported volume %d as temporarily unaccessible.";
386 /* Log server being offline for this volume */
387 sprintf(addr, "%d.%d.%d.%d",
388 ((serverp->addr.sin_addr.s_addr & 0xff)),
389 ((serverp->addr.sin_addr.s_addr & 0xff00)>> 8),
390 ((serverp->addr.sin_addr.s_addr & 0xff0000)>> 16),
391 ((serverp->addr.sin_addr.s_addr & 0xff000000)>> 24));
393 osi_Log2(afsd_logp, format, osi_LogSaveString(afsd_logp,addr), fidp->volume);
394 LogEvent(EVENTLOG_WARNING_TYPE, msgID, addr, fidp->volume);
396 /* Mark server offline for this volume */
398 code = cm_GetServerList(fidp, userp, reqp, &serverspp);
400 serversp = *serverspp;
404 for (tsrp = serversp; tsrp; tsrp=tsrp->next) {
405 if (tsrp->server == serverp) {
407 if (errorCode == VNOVOL || errorCode == VMOVED) {
408 tsrp->status = srv_deleted;
410 cm_ForceUpdateVolume(fidp, userp, reqp);
413 tsrp->status = srv_offline;
417 cm_FreeServerList(&serversp, 0);
418 *serverspp = serversp;
422 } else if ( errorCode == VNOVNODE ) {
425 osi_Log4(afsd_logp, "cm_Analyze passed VNOVNODE cell %u vol %u vn %u uniq %u.",
426 fidp->cell, fidp->volume, fidp->vnode, fidp->unique);
428 scp = cm_FindSCache(fidp);
430 cm_scache_t *pscp = NULL;
432 if (scp->fileType != CM_SCACHETYPE_DIRECTORY)
433 pscp = cm_FindSCacheParent(scp);
436 lock_ObtainMutex(&scp->mx);
437 lock_ObtainWrite(&cm_scacheLock);
438 cm_RemoveSCacheFromHashTable(scp);
439 lock_ReleaseWrite(&cm_scacheLock);
440 scp->flags |= CM_SCACHEFLAG_DELETED;
441 lock_ReleaseMutex(&scp->mx);
442 cm_ReleaseSCache(scp);
445 if (cm_HaveCallback(pscp)) {
446 lock_ObtainMutex(&pscp->mx);
447 cm_DiscardSCache(pscp);
448 lock_ReleaseMutex(&pscp->mx);
450 cm_ReleaseSCache(pscp);
454 osi_Log0(afsd_logp, "cm_Analyze passed VNOVNODE unknown fid.");
459 else if (errorCode == RX_CALL_TIMEOUT) {
460 /* server took longer than hardDeadTime
461 * don't mark server as down but don't retry
462 * this is to prevent the SMB session from timing out
463 * In addition, we log an event to the event log
466 /* Log server being offline for this volume */
467 sprintf(addr, "%d.%d.%d.%d",
468 ((serverp->addr.sin_addr.s_addr & 0xff)),
469 ((serverp->addr.sin_addr.s_addr & 0xff00)>> 8),
470 ((serverp->addr.sin_addr.s_addr & 0xff0000)>> 16),
471 ((serverp->addr.sin_addr.s_addr & 0xff000000)>> 24));
473 LogEvent(EVENTLOG_WARNING_TYPE, MSG_RX_HARD_DEAD_TIME_EXCEEDED, addr);
476 osi_Log1(afsd_logp, "cm_Analyze: hardDeadTime exceeded addr[%s]",
477 osi_LogSaveString(afsd_logp,addr));
479 else if (errorCode >= -64 && errorCode < 0) {
480 /* mark server as down */
481 lock_ObtainMutex(&serverp->mx);
482 if (reqp->flags & CM_REQ_NEW_CONN_FORCED)
483 serverp->flags |= CM_SERVERFLAG_DOWN;
485 reqp->flags |= CM_REQ_NEW_CONN_FORCED;
488 lock_ReleaseMutex(&serverp->mx);
489 cm_ForceNewConnections(serverp);
493 else if (errorCode == RXKADEXPIRED || errorCode == RXKADBADTICKET) {
495 lock_ObtainMutex(&userp->mx);
496 ucellp = cm_GetUCell(userp, serverp->cellp);
497 if (ucellp->ticketp) {
498 free(ucellp->ticketp);
499 ucellp->ticketp = NULL;
501 ucellp->flags &= ~CM_UCELLFLAG_RXKAD;
503 lock_ReleaseMutex(&userp->mx);
507 } else if (errorCode == VICECONNBAD || errorCode == VICETOKENDEAD) {
508 cm_ForceNewConnections(serverp);
513 char * s = "unknown error";
514 switch ( errorCode ) {
515 case RXKADINCONSISTENCY: s = "RXKADINCONSISTENCY"; break;
516 case RXKADPACKETSHORT : s = "RXKADPACKETSHORT"; break;
517 case RXKADLEVELFAIL : s = "RXKADLEVELFAIL"; break;
518 case RXKADTICKETLEN : s = "RXKADTICKETLEN"; break;
519 case RXKADOUTOFSEQUENCE: s = "RXKADOUTOFSEQUENCE"; break;
520 case RXKADNOAUTH : s = "RXKADNOAUTH"; break;
521 case RXKADBADKEY : s = "RXKADBADKEY"; break;
522 case RXKADBADTICKET : s = "RXKADBADTICKET"; break;
523 case RXKADUNKNOWNKEY : s = "RXKADUNKNOWNKEY"; break;
524 case RXKADEXPIRED : s = "RXKADEXPIRED"; break;
525 case RXKADSEALEDINCON : s = "RXKADSEALEDINCON"; break;
526 case RXKADDATALEN : s = "RXKADDATALEN"; break;
527 case RXKADILLEGALLEVEL : s = "RXKADILLEGALLEVEL"; break;
528 case VSALVAGE : s = "VSALVAGE"; break;
529 case VNOVNODE : s = "VNOVNODE"; break;
530 case VNOVOL : s = "VNOVOL"; break;
531 case VVOLEXISTS : s = "VVOLEXISTS"; break;
532 case VNOSERVICE : s = "VNOSERVICE"; break;
533 case VOFFLINE : s = "VOFFLINE"; break;
534 case VONLINE : s = "VONLINE"; break;
535 case VDISKFULL : s = "VDISKFULL"; break;
536 case VOVERQUOTA : s = "VOVERQUOTA"; break;
537 case VBUSY : s = "VBUSY"; break;
538 case VMOVED : s = "VMOVED"; break;
539 case VIO : s = "VIO"; break;
540 case VRESTRICTED : s = "VRESTRICTED"; break;
541 case VRESTARTING : s = "VRESTARTING"; break;
542 case VREADONLY : s = "VREADONLY"; break;
543 case EAGAIN : s = "EAGAIN"; break;
544 case UAEAGAIN : s = "UAEAGAIN"; break;
545 case EINVAL : s = "EINVAL"; break;
546 case UAEINVAL : s = "UAEINVAL"; break;
547 case EACCES : s = "EACCES"; break;
548 case UAEACCES : s = "UAEACCES"; break;
549 case ENOENT : s = "ENOENT"; break;
550 case UAENOENT : s = "UAENOENT"; break;
551 case VICECONNBAD : s = "VICECONNBAD"; break;
552 case VICETOKENDEAD : s = "VICETOKENDEAD"; break;
553 case CM_ERROR_NOSUCHCELL : s = "CM_ERROR_NOSUCHCELL"; break;
554 case CM_ERROR_NOSUCHVOLUME : s = "CM_ERROR_NOSUCHVOLUME"; break;
555 case CM_ERROR_TIMEDOUT : s = "CM_ERROR_TIMEDOUT"; break;
556 case CM_ERROR_RETRY : s = "CM_ERROR_RETRY"; break;
557 case CM_ERROR_NOACCESS : s = "CM_ERROR_NOACCESS"; break;
558 case CM_ERROR_NOSUCHFILE : s = "CM_ERROR_NOSUCHFILE"; break;
559 case CM_ERROR_STOPNOW : s = "CM_ERROR_STOPNOW"; break;
560 case CM_ERROR_TOOBIG : s = "CM_ERROR_TOOBIG"; break;
561 case CM_ERROR_INVAL : s = "CM_ERROR_INVAL"; break;
562 case CM_ERROR_BADFD : s = "CM_ERROR_BADFD"; break;
563 case CM_ERROR_BADFDOP : s = "CM_ERROR_BADFDOP"; break;
564 case CM_ERROR_EXISTS : s = "CM_ERROR_EXISTS"; break;
565 case CM_ERROR_CROSSDEVLINK : s = "CM_ERROR_CROSSDEVLINK"; break;
566 case CM_ERROR_BADOP : s = "CM_ERROR_BADOP"; break;
567 case CM_ERROR_BADPASSWORD : s = "CM_ERROR_BADPASSWORD"; break;
568 case CM_ERROR_NOTDIR : s = "CM_ERROR_NOTDIR"; break;
569 case CM_ERROR_ISDIR : s = "CM_ERROR_ISDIR"; break;
570 case CM_ERROR_READONLY : s = "CM_ERROR_READONLY"; break;
571 case CM_ERROR_WOULDBLOCK : s = "CM_ERROR_WOULDBLOCK"; break;
572 case CM_ERROR_QUOTA : s = "CM_ERROR_QUOTA"; break;
573 case CM_ERROR_SPACE : s = "CM_ERROR_SPACE"; break;
574 case CM_ERROR_BADSHARENAME : s = "CM_ERROR_BADSHARENAME"; break;
575 case CM_ERROR_BADTID : s = "CM_ERROR_BADTID"; break;
576 case CM_ERROR_UNKNOWN : s = "CM_ERROR_UNKNOWN"; break;
577 case CM_ERROR_NOMORETOKENS : s = "CM_ERROR_NOMORETOKENS"; break;
578 case CM_ERROR_NOTEMPTY : s = "CM_ERROR_NOTEMPTY"; break;
579 case CM_ERROR_USESTD : s = "CM_ERROR_USESTD"; break;
580 case CM_ERROR_REMOTECONN : s = "CM_ERROR_REMOTECONN"; break;
581 case CM_ERROR_ATSYS : s = "CM_ERROR_ATSYS"; break;
582 case CM_ERROR_NOSUCHPATH : s = "CM_ERROR_NOSUCHPATH"; break;
583 case CM_ERROR_CLOCKSKEW : s = "CM_ERROR_CLOCKSKEW"; break;
584 case CM_ERROR_BADSMB : s = "CM_ERROR_BADSMB"; break;
585 case CM_ERROR_ALLBUSY : s = "CM_ERROR_ALLBUSY"; break;
586 case CM_ERROR_NOFILES : s = "CM_ERROR_NOFILES"; break;
587 case CM_ERROR_PARTIALWRITE : s = "CM_ERROR_PARTIALWRITE"; break;
588 case CM_ERROR_NOIPC : s = "CM_ERROR_NOIPC"; break;
589 case CM_ERROR_BADNTFILENAME : s = "CM_ERROR_BADNTFILENAME"; break;
590 case CM_ERROR_BUFFERTOOSMALL : s = "CM_ERROR_BUFFERTOOSMALL"; break;
591 case CM_ERROR_RENAME_IDENTICAL : s = "CM_ERROR_RENAME_IDENTICAL"; break;
592 case CM_ERROR_ALLOFFLINE : s = "CM_ERROR_ALLOFFLINE"; break;
593 case CM_ERROR_AMBIGUOUS_FILENAME: s = "CM_ERROR_AMBIGUOUS_FILENAME"; break;
594 case CM_ERROR_BADLOGONTYPE : s = "CM_ERROR_BADLOGONTYPE"; break;
595 case CM_ERROR_GSSCONTINUE : s = "CM_ERROR_GSSCONTINUE"; break;
596 case CM_ERROR_TIDIPC : s = "CM_ERROR_TIDIPC"; break;
597 case CM_ERROR_TOO_MANY_SYMLINKS : s = "CM_ERROR_TOO_MANY_SYMLINKS"; break;
598 case CM_ERROR_PATH_NOT_COVERED : s = "CM_ERROR_PATH_NOT_COVERED"; break;
599 case CM_ERROR_LOCK_CONFLICT : s = "CM_ERROR_LOCK_CONFLICT"; break;
600 case CM_ERROR_SHARING_VIOLATION : s = "CM_ERROR_SHARING_VIOLATION"; break;
601 case CM_ERROR_ALLDOWN : s = "CM_ERROR_ALLDOWN"; break;
602 case CM_ERROR_TOOFEWBUFS : s = "CM_ERROR_TOOFEWBUFS"; break;
603 case CM_ERROR_TOOMANYBUFS : s = "CM_ERROR_TOOMANYBUFS"; break;
605 osi_Log2(afsd_logp, "cm_Analyze: ignoring error code 0x%x (%s)",
611 /* If not allowed to retry, don't */
612 if (!forcing_new && (reqp->flags & CM_REQ_NORETRY))
614 else if (retry && dead_session)
618 /* drop this on the way out */
622 /* retry until we fail to find a connection */
626 long cm_ConnByMServers(cm_serverRef_t *serversp, cm_user_t *usersp,
627 cm_req_t *reqp, cm_conn_t **connpp)
630 cm_serverRef_t *tsrp;
633 int someBusy = 0, someOffline = 0, allOffline = 1, allBusy = 1, allDown = 1;
634 long timeUsed, timeLeft, hardTimeLeft;
636 if (serversp == NULL) {
637 osi_Log1(afsd_logp, "cm_ConnByMServers returning 0x%x", CM_ERROR_ALLDOWN);
638 return CM_ERROR_ALLDOWN;
643 timeUsed = (GetTickCount() - reqp->startTime) / 1000;
645 /* leave 5 seconds margin of safety */
646 timeLeft = ConnDeadtimeout - timeUsed - 5;
647 hardTimeLeft = HardDeadtimeout - timeUsed - 5;
649 lock_ObtainWrite(&cm_serverLock);
650 for (tsrp = serversp; tsrp; tsrp=tsrp->next) {
652 cm_GetServerNoLock(tsp);
653 lock_ReleaseWrite(&cm_serverLock);
654 if (!(tsp->flags & CM_SERVERFLAG_DOWN)) {
656 if (tsrp->status == srv_deleted) {
657 /* skip this entry. no longer valid. */;
658 } else if (tsrp->status == srv_busy) {
661 } else if (tsrp->status == srv_offline) {
667 code = cm_ConnByServer(tsp, usersp, connpp);
668 if (code == 0) { /* cm_CBS only returns 0 */
670 /* Set RPC timeout */
671 if (timeLeft > ConnDeadtimeout)
672 timeLeft = ConnDeadtimeout;
674 if (hardTimeLeft > HardDeadtimeout)
675 hardTimeLeft = HardDeadtimeout;
677 lock_ObtainMutex(&(*connpp)->mx);
678 rx_SetConnDeadTime((*connpp)->callp, timeLeft);
679 rx_SetConnHardDeadTime((*connpp)->callp, (u_short) hardTimeLeft);
680 lock_ReleaseMutex(&(*connpp)->mx);
684 /* therefore, this code is never executed */
689 lock_ObtainWrite(&cm_serverLock);
690 cm_PutServerNoLock(tsp);
692 lock_ReleaseWrite(&cm_serverLock);
694 if (firstError == 0) {
696 firstError = CM_ERROR_ALLDOWN;
698 firstError = CM_ERROR_ALLBUSY;
699 else if (allOffline || (someBusy && someOffline))
700 firstError = CM_ERROR_ALLOFFLINE;
702 osi_Log0(afsd_logp, "cm_ConnByMServers returning impossible error TIMEDOUT");
703 firstError = CM_ERROR_TIMEDOUT;
707 osi_Log1(afsd_logp, "cm_ConnByMServers returning 0x%x", firstError);
711 /* called with a held server to GC all bad connections hanging off of the server */
712 void cm_GCConnections(cm_server_t *serverp)
718 lock_ObtainWrite(&cm_connLock);
719 lcpp = &serverp->connsp;
720 for (tcp = *lcpp; tcp; tcp = *lcpp) {
722 if (userp && tcp->refCount == 0 && (userp->vcRefs == 0)) {
723 /* do the deletion of this guy */
724 cm_PutServer(tcp->serverp);
725 cm_ReleaseUser(userp);
727 rx_DestroyConnection(tcp->callp);
728 lock_FinalizeMutex(&tcp->mx);
732 /* just advance to the next */
736 lock_ReleaseWrite(&cm_connLock);
739 static void cm_NewRXConnection(cm_conn_t *tcp, cm_ucell_t *ucellp,
740 cm_server_t *serverp)
745 struct rx_securityClass *secObjp;
747 if (serverp->type == CM_SERVER_VLDB) {
752 osi_assert(serverp->type == CM_SERVER_FILE);
756 if (ucellp->flags & CM_UCELLFLAG_RXKAD) {
759 tcp->cryptlevel = rxkad_crypt;
761 tcp->cryptlevel = rxkad_clear;
763 secObjp = rxkad_NewClientSecurityObject(tcp->cryptlevel,
764 &ucellp->sessionKey, ucellp->kvno,
765 ucellp->ticketLen, ucellp->ticketp);
769 tcp->cryptlevel = rxkad_clear;
770 secObjp = rxnull_NewClientSecurityObject();
772 osi_assert(secObjp != NULL);
773 tcp->callp = rx_NewConnection(serverp->addr.sin_addr.s_addr,
778 rx_SetConnDeadTime(tcp->callp, ConnDeadtimeout);
779 rx_SetConnHardDeadTime(tcp->callp, HardDeadtimeout);
780 tcp->ucgen = ucellp->gen;
782 rxs_Release(secObjp); /* Decrement the initial refCount */
785 long cm_ConnByServer(cm_server_t *serverp, cm_user_t *userp, cm_conn_t **connpp)
790 lock_ObtainMutex(&userp->mx);
791 lock_ObtainWrite(&cm_connLock);
792 for (tcp = serverp->connsp; tcp; tcp=tcp->nextp) {
793 if (tcp->userp == userp)
797 /* find ucell structure */
798 ucellp = cm_GetUCell(userp, serverp->cellp);
800 cm_GetServer(serverp);
801 tcp = malloc(sizeof(*tcp));
802 memset(tcp, 0, sizeof(*tcp));
803 tcp->nextp = serverp->connsp;
804 serverp->connsp = tcp;
807 lock_InitializeMutex(&tcp->mx, "cm_conn_t mutex");
808 lock_ObtainMutex(&tcp->mx);
809 tcp->serverp = serverp;
810 tcp->cryptlevel = rxkad_clear;
811 cm_NewRXConnection(tcp, ucellp, serverp);
813 lock_ReleaseMutex(&tcp->mx);
815 if ((tcp->flags & CM_CONN_FLAG_FORCE_NEW) ||
816 (tcp->ucgen < ucellp->gen) ||
817 (tcp->cryptlevel != (cryptall ? (ucellp->flags & CM_UCELLFLAG_RXKAD ? rxkad_crypt : rxkad_clear) : rxkad_clear)))
819 if (tcp->ucgen < ucellp->gen)
820 osi_Log0(afsd_logp, "cm_ConnByServer replace connection due to token update");
822 osi_Log0(afsd_logp, "cm_ConnByServer replace connection due to crypt change");
823 lock_ObtainMutex(&tcp->mx);
824 tcp->flags &= ~CM_CONN_FLAG_FORCE_NEW;
825 rx_DestroyConnection(tcp->callp);
826 cm_NewRXConnection(tcp, ucellp, serverp);
827 lock_ReleaseMutex(&tcp->mx);
831 lock_ReleaseWrite(&cm_connLock);
832 lock_ReleaseMutex(&userp->mx);
834 /* return this pointer to our caller */
835 osi_Log1(afsd_logp, "cm_ConnByServer returning conn 0x%p", tcp);
841 long cm_ServerAvailable(struct cm_fid *fidp, struct cm_user *userp)
845 cm_serverRef_t **serverspp;
846 cm_serverRef_t *tsrp;
848 int someBusy = 0, someOffline = 0, allOffline = 1, allBusy = 1, allDown = 1;
852 code = cm_GetServerList(fidp, userp, &req, &serverspp);
856 lock_ObtainWrite(&cm_serverLock);
857 for (tsrp = *serverspp; tsrp; tsrp=tsrp->next) {
859 cm_GetServerNoLock(tsp);
860 if (!(tsp->flags & CM_SERVERFLAG_DOWN)) {
862 if (tsrp->status == srv_busy) {
865 } else if (tsrp->status == srv_offline) {
873 cm_PutServerNoLock(tsp);
875 lock_ReleaseWrite(&cm_serverLock);
876 cm_FreeServerList(serverspp, 0);
882 else if (allOffline || (someBusy && someOffline))
889 * The returned cm_conn_t ** object is released in the subsequent call
892 long cm_ConnFromFID(struct cm_fid *fidp, struct cm_user *userp, cm_req_t *reqp,
896 cm_serverRef_t **serverspp;
898 code = cm_GetServerList(fidp, userp, reqp, &serverspp);
904 code = cm_ConnByMServers(*serverspp, userp, reqp, connpp);
905 cm_FreeServerList(serverspp, 0);
910 long cm_ConnFromVolume(struct cm_volume *volp, unsigned long volid, struct cm_user *userp, cm_req_t *reqp,
914 cm_serverRef_t **serverspp;
916 serverspp = cm_GetVolServers(volp, volid);
918 code = cm_ConnByMServers(*serverspp, userp, reqp, connpp);
919 cm_FreeServerList(serverspp, 0);
924 extern struct rx_connection *
925 cm_GetRxConn(cm_conn_t *connp)
927 struct rx_connection * rxconn;
928 lock_ObtainMutex(&connp->mx);
929 rxconn = connp->callp;
930 rx_GetConnection(rxconn);
931 lock_ReleaseMutex(&connp->mx);
935 void cm_ForceNewConnections(cm_server_t *serverp)
939 lock_ObtainWrite(&cm_connLock);
940 for (tcp = serverp->connsp; tcp; tcp=tcp->nextp) {
941 lock_ObtainMutex(&tcp->mx);
942 tcp->flags |= CM_CONN_FLAG_FORCE_NEW;
943 lock_ReleaseMutex(&tcp->mx);
945 lock_ReleaseWrite(&cm_connLock);