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
12 * Exported routines (and their private support) to implement
13 * the callback RPC interface.
16 #include <afsconfig.h>
17 #include "afs/param.h"
20 #include "afs/sysincludes.h" /*Standard vendor system headers */
21 #include "afsincludes.h" /*AFS-based standard headers */
22 #include "afs/afs_stats.h" /*Cache Manager stats */
23 #include "afs/afs_args.h"
25 afs_int32 afs_allCBs = 0; /*Break callbacks on all objects */
26 afs_int32 afs_oddCBs = 0; /*Break callbacks on dirs */
27 afs_int32 afs_evenCBs = 0; /*Break callbacks received on files */
28 afs_int32 afs_allZaps = 0; /*Objects entries deleted */
29 afs_int32 afs_oddZaps = 0; /*Dir cache entries deleted */
30 afs_int32 afs_evenZaps = 0; /*File cache entries deleted */
31 afs_int32 afs_connectBacks = 0;
34 * Some debugging aids.
36 static struct ltable {
41 "afs_xvcache", (char *)&afs_xvcache}, {
42 "afs_xdcache", (char *)&afs_xdcache}, {
43 "afs_xserver", (char *)&afs_xserver}, {
44 "afs_xvcb", (char *)&afs_xvcb}, {
45 "afs_xbrs", (char *)&afs_xbrs}, {
46 "afs_xcell", (char *)&afs_xcell}, {
47 "afs_xconn", (char *)&afs_xconn}, {
48 "afs_xuser", (char *)&afs_xuser}, {
49 "afs_xvolume", (char *)&afs_xvolume}, {
50 "puttofile", (char *)&afs_puttofileLock}, {
51 "afs_ftf", (char *)&afs_ftf}, {
52 "afs_xcbhash", (char *)&afs_xcbhash}, {
53 "afs_xaxs", (char *)&afs_xaxs}, {
54 "afs_xinterface", (char *)&afs_xinterface},
57 "afs_xosi", (char *)&afs_xosi},
60 "afs_xsrvAddr", (char *)&afs_xsrvAddr},
62 "afs_xvreclaim", (char *)&afs_xvreclaim},
63 { "afsdb_client_lock", (char *)&afsdb_client_lock},
64 { "afsdb_req_lock", (char *)&afsdb_req_lock},
65 { "afs_discon_lock", (char *)&afs_discon_lock},
66 { "afs_disconDirtyLock", (char *)&afs_disconDirtyLock},
67 { "afs_discon_vc_dirty", (char *)&afs_xvcdirty},
69 unsigned long lastCallBack_vnode;
70 unsigned int lastCallBack_dv;
71 osi_timeval_t lastCallBack_time;
73 /* these are for storing alternate interface addresses */
74 struct interfaceAddr afs_cb_interface;
76 /*------------------------------------------------------------------------
77 * EXPORTED SRXAFSCB_GetCE
80 * Routine called by the server-side callback RPC interface to
81 * implement pulling out the contents of the i'th cache entry.
84 * a_call : Ptr to Rx call on which this request came in.
85 * a_index : Index of desired cache entry.
86 * a_result : Ptr to a buffer for the given cache entry.
89 * 0 if everything went fine,
90 * 1 if we were given a bad index.
93 * Nothing interesting.
97 *------------------------------------------------------------------------*/
100 SRXAFSCB_GetCE(struct rx_call *a_call, afs_int32 a_index,
101 struct AFSDBCacheEntry *a_result)
104 int i; /*Loop variable */
105 struct vcache *tvc; /*Ptr to current cache entry */
106 int code; /*Return code */
111 XSTATS_START_CMTIME(AFS_STATS_CM_RPCIDX_GETCE);
113 AFS_STATCNT(SRXAFSCB_GetCE);
114 for (i = 0; i < VCSIZE; i++) {
115 for (tvc = afs_vhashT[i]; tvc; tvc = tvc->hnext) {
119 } /*Zip through current hash chain */
120 } /*Zip through hash chains */
130 * Copy out the located entry.
132 a_result->addr = afs_data_pointer_to_int32(tvc);
133 a_result->cell = tvc->f.fid.Cell;
134 a_result->netFid.Volume = tvc->f.fid.Fid.Volume;
135 a_result->netFid.Vnode = tvc->f.fid.Fid.Vnode;
136 a_result->netFid.Unique = tvc->f.fid.Fid.Unique;
137 a_result->lock.waitStates = tvc->lock.wait_states;
138 a_result->lock.exclLocked = tvc->lock.excl_locked;
139 a_result->lock.readersReading = tvc->lock.readers_reading;
140 a_result->lock.numWaiting = tvc->lock.num_waiting;
141 #if defined(INSTRUMENT_LOCKS)
142 a_result->lock.pid_last_reader = MyPidxx2Pid(tvc->lock.pid_last_reader);
143 a_result->lock.pid_writer = MyPidxx2Pid(tvc->lock.pid_writer);
144 a_result->lock.src_indicator = tvc->lock.src_indicator;
146 /* On osf20 , the vcache does not maintain these three fields */
147 a_result->lock.pid_last_reader = 0;
148 a_result->lock.pid_writer = 0;
149 a_result->lock.src_indicator = 0;
150 #endif /* INSTRUMENT_LOCKS */
151 #ifdef AFS_64BIT_CLIENT
152 a_result->Length = (afs_int32) tvc->f.m.Length & 0xffffffff;
153 #else /* AFS_64BIT_CLIENT */
154 a_result->Length = tvc->f.m.Length;
155 #endif /* AFS_64BIT_CLIENT */
156 a_result->DataVersion = hgetlo(tvc->f.m.DataVersion);
157 a_result->callback = afs_data_pointer_to_int32(tvc->callback); /* XXXX Now a pointer; change it XXXX */
158 a_result->cbExpires = tvc->cbExpires;
159 if (tvc->f.states & CVInit) {
160 a_result->refCount = 1;
162 #ifdef AFS_DARWIN80_ENV
163 a_result->refCount = vnode_isinuse(AFSTOV(tvc),0)?1:0; /* XXX fix */
165 a_result->refCount = VREFCOUNT(tvc);
168 a_result->opens = tvc->opens;
169 a_result->writers = tvc->execsOrWriters;
170 a_result->mvstat = tvc->mvstat;
171 a_result->states = tvc->f.states;
175 * Return our results.
184 } /*SRXAFSCB_GetCE */
187 SRXAFSCB_GetCE64(struct rx_call *a_call, afs_int32 a_index,
188 struct AFSDBCacheEntry64 *a_result)
190 int i; /*Loop variable */
191 struct vcache *tvc; /*Ptr to current cache entry */
192 int code; /*Return code */
197 XSTATS_START_CMTIME(AFS_STATS_CM_RPCIDX_GETCE);
199 AFS_STATCNT(SRXAFSCB_GetCE64);
200 for (i = 0; i < VCSIZE; i++) {
201 for (tvc = afs_vhashT[i]; tvc; tvc = tvc->hnext) {
205 } /*Zip through current hash chain */
206 } /*Zip through hash chains */
216 * Copy out the located entry.
218 a_result->addr = afs_data_pointer_to_int32(tvc);
219 a_result->cell = tvc->f.fid.Cell;
220 a_result->netFid.Volume = tvc->f.fid.Fid.Volume;
221 a_result->netFid.Vnode = tvc->f.fid.Fid.Vnode;
222 a_result->netFid.Unique = tvc->f.fid.Fid.Unique;
223 a_result->lock.waitStates = tvc->lock.wait_states;
224 a_result->lock.exclLocked = tvc->lock.excl_locked;
225 a_result->lock.readersReading = tvc->lock.readers_reading;
226 a_result->lock.numWaiting = tvc->lock.num_waiting;
227 #if defined(INSTRUMENT_LOCKS)
228 a_result->lock.pid_last_reader = MyPidxx2Pid(tvc->lock.pid_last_reader);
229 a_result->lock.pid_writer = MyPidxx2Pid(tvc->lock.pid_writer);
230 a_result->lock.src_indicator = tvc->lock.src_indicator;
232 /* On osf20 , the vcache does not maintain these three fields */
233 a_result->lock.pid_last_reader = 0;
234 a_result->lock.pid_writer = 0;
235 a_result->lock.src_indicator = 0;
236 #endif /* INSTRUMENT_LOCKS */
237 a_result->Length = tvc->f.m.Length;
238 a_result->DataVersion = hgetlo(tvc->f.m.DataVersion);
239 a_result->callback = afs_data_pointer_to_int32(tvc->callback); /* XXXX Now a pointer; change it XXXX */
240 a_result->cbExpires = tvc->cbExpires;
241 if (tvc->f.states & CVInit) {
242 a_result->refCount = 1;
244 #ifdef AFS_DARWIN80_ENV
245 a_result->refCount = vnode_isinuse(AFSTOV(tvc),0)?1:0; /* XXX fix */
247 a_result->refCount = VREFCOUNT(tvc);
250 a_result->opens = tvc->opens;
251 a_result->writers = tvc->execsOrWriters;
252 a_result->mvstat = tvc->mvstat;
253 a_result->states = tvc->f.states;
257 * Return our results.
266 } /*SRXAFSCB_GetCE64 */
269 /*------------------------------------------------------------------------
270 * EXPORTED SRXAFSCB_GetLock
273 * Routine called by the server-side callback RPC interface to
274 * implement pulling out the contents of a lock in the lock
278 * a_call : Ptr to Rx call on which this request came in.
279 * a_index : Index of desired lock.
280 * a_result : Ptr to a buffer for the given lock.
283 * 0 if everything went fine,
284 * 1 if we were given a bad index.
287 * Nothing interesting.
291 *------------------------------------------------------------------------*/
294 SRXAFSCB_GetLock(struct rx_call *a_call, afs_int32 a_index,
295 struct AFSDBLock *a_result)
297 struct ltable *tl; /*Ptr to lock table entry */
298 int nentries; /*Num entries in table */
299 int code; /*Return code */
304 XSTATS_START_CMTIME(AFS_STATS_CM_RPCIDX_GETLOCK);
306 AFS_STATCNT(SRXAFSCB_GetLock);
307 nentries = sizeof(ltable) / sizeof(struct ltable);
308 if (a_index < 0 || a_index >= nentries+afs_cellindex) {
313 } else if (a_index >= nentries) {
314 struct cell *tc = afs_GetCellByIndex(a_index-nentries, 0);
315 strcpy(a_result->name, tc->cellName);
316 a_result->lock.waitStates =
317 ((struct afs_lock *)&(tc->lock))->wait_states;
318 a_result->lock.exclLocked =
319 ((struct afs_lock *)&(tc->lock))->excl_locked;
320 a_result->lock.readersReading =
321 ((struct afs_lock *)&(tc->lock))->readers_reading;
322 a_result->lock.numWaiting =
323 ((struct afs_lock *)&(tc->lock))->num_waiting;
324 #ifdef INSTRUMENT_LOCKS
325 a_result->lock.pid_last_reader =
326 MyPidxx2Pid(((struct afs_lock *)&(tc->lock))->pid_last_reader);
327 a_result->lock.pid_writer =
328 MyPidxx2Pid(((struct afs_lock *)&(tc->lock))->pid_writer);
329 a_result->lock.src_indicator =
330 ((struct afs_lock *)&(tc->lock))->src_indicator;
332 a_result->lock.pid_last_reader = 0;
333 a_result->lock.pid_writer = 0;
334 a_result->lock.src_indicator = 0;
339 * Found it - copy out its contents.
341 tl = <able[a_index];
342 strcpy(a_result->name, tl->name);
343 a_result->lock.waitStates =
344 ((struct afs_lock *)(tl->addr))->wait_states;
345 a_result->lock.exclLocked =
346 ((struct afs_lock *)(tl->addr))->excl_locked;
347 a_result->lock.readersReading =
348 ((struct afs_lock *)(tl->addr))->readers_reading;
349 a_result->lock.numWaiting =
350 ((struct afs_lock *)(tl->addr))->num_waiting;
351 #ifdef INSTRUMENT_LOCKS
352 a_result->lock.pid_last_reader =
353 MyPidxx2Pid(((struct afs_lock *)(tl->addr))->pid_last_reader);
354 a_result->lock.pid_writer =
355 MyPidxx2Pid(((struct afs_lock *)(tl->addr))->pid_writer);
356 a_result->lock.src_indicator =
357 ((struct afs_lock *)(tl->addr))->src_indicator;
359 a_result->lock.pid_last_reader = 0;
360 a_result->lock.pid_writer = 0;
361 a_result->lock.src_indicator = 0;
372 } /*SRXAFSCB_GetLock */
375 /*------------------------------------------------------------------------
376 * static ClearCallBack
379 * Clear out callback information for the specified file, or
380 * even a whole volume. Used to worry about callback was from
381 * within the particular cell or not. Now we don't bother with
382 * that anymore; it's not worth the time.
385 * a_conn : Ptr to Rx connection involved.
386 * a_fid : Ptr to AFS fid being cleared.
392 * Nothing interesting.
397 Appears to need to be called with GLOCK held, as the icl_Event4 stuff asserts otherwise
399 *------------------------------------------------------------------------*/
402 ClearCallBack(struct rx_connection *a_conn,
403 struct AFSFid *a_fid)
407 struct VenusFid localFid;
409 #ifdef AFS_DARWIN80_ENV
413 AFS_STATCNT(ClearCallBack);
418 * XXXX Don't hold any server locks here because of callback protocol XXX
421 localFid.Fid.Volume = a_fid->Volume;
422 localFid.Fid.Vnode = a_fid->Vnode;
423 localFid.Fid.Unique = a_fid->Unique;
426 * Volume ID of zero means don't do anything.
428 if (a_fid->Volume != 0) {
429 if (a_fid->Vnode == 0) {
430 struct afs_q *tq, *uq;
432 * Clear callback for the whole volume. Zip through the
433 * hash chain, nullifying entries whose volume ID matches.
436 ObtainReadLock(&afs_xvcache);
437 i = VCHashV(&localFid);
438 for (tq = afs_vhashTV[i].prev; tq != &afs_vhashTV[i]; tq = uq) {
441 if (tvc->f.fid.Fid.Volume == a_fid->Volume) {
442 tvc->callback = NULL;
444 localFid.Cell = tvc->f.fid.Cell;
445 tvc->dchint = NULL; /* invalidate hints */
446 if (tvc->f.states & CVInit) {
447 ReleaseReadLock(&afs_xvcache);
448 afs_osi_Sleep(&tvc->f.states);
451 #if defined(AFS_SGI_ENV) || defined(AFS_SUN5_ENV) || defined(AFS_HPUX_ENV) || defined(AFS_LINUX20_ENV)
454 #ifdef AFS_DARWIN80_ENV
455 if (tvc->f.states & CDeadVnode) {
456 if (!(tvc->f.states & CBulkFetching)) {
457 ReleaseReadLock(&afs_xvcache);
458 afs_osi_Sleep(&tvc->f.states);
471 if (tvc->f.states & (CBulkFetching|CDeadVnode)) {
473 vnode_recycle(AFSTOV(tvc));
480 ReleaseReadLock(&afs_xvcache);
481 ObtainWriteLock(&afs_xcbhash, 449);
482 afs_DequeueCallback(tvc);
483 tvc->f.states &= ~(CStatd | CUnique | CBulkFetching);
485 if (tvc->f.fid.Fid.Vnode & 1)
489 ReleaseWriteLock(&afs_xcbhash);
490 if ((tvc->f.fid.Fid.Vnode & 1 || (vType(tvc) == VDIR)))
491 osi_dnlc_purgedp(tvc);
492 afs_Trace3(afs_iclSetp, CM_TRACE_CALLBACK,
493 ICL_TYPE_POINTER, tvc, ICL_TYPE_INT32,
494 tvc->f.states, ICL_TYPE_INT32,
496 #ifdef AFS_DARWIN80_ENV
497 vnode_put(AFSTOV(tvc));
499 ObtainReadLock(&afs_xvcache);
502 } else if ((tvc->f.states & CMValid)
503 && (tvc->mvid->Fid.Volume == a_fid->Volume)) {
504 tvc->f.states &= ~CMValid;
506 localFid.Cell = tvc->mvid->Cell;
509 ReleaseReadLock(&afs_xvcache);
512 * XXXX Don't hold any locks here XXXX
514 tv = afs_FindVolume(&localFid, 0);
516 afs_ResetVolumeInfo(tv);
517 afs_PutVolume(tv, 0);
518 /* invalidate mtpoint? */
520 } /*Clear callbacks for whole volume */
523 * Clear callbacks just for the one file.
527 if (a_fid->Vnode & 1)
528 afs_oddCBs++; /*Could do this on volume basis, too */
530 afs_evenCBs++; /*A particular fid was specified */
532 ObtainReadLock(&afs_xvcache);
533 i = VCHash(&localFid);
534 for (tvc = afs_vhashT[i]; tvc; tvc = uvc) {
536 if (tvc->f.fid.Fid.Vnode == a_fid->Vnode
537 && tvc->f.fid.Fid.Volume == a_fid->Volume
538 && tvc->f.fid.Fid.Unique == a_fid->Unique) {
539 tvc->callback = NULL;
540 tvc->dchint = NULL; /* invalidate hints */
541 if (tvc->f.states & CVInit) {
542 ReleaseReadLock(&afs_xvcache);
543 afs_osi_Sleep(&tvc->f.states);
546 #if defined(AFS_SGI_ENV) || defined(AFS_SUN5_ENV) || defined(AFS_HPUX_ENV) || defined(AFS_LINUX20_ENV)
549 #ifdef AFS_DARWIN80_ENV
550 if (tvc->f.states & CDeadVnode) {
551 if (!(tvc->f.states & CBulkFetching)) {
552 ReleaseReadLock(&afs_xvcache);
553 afs_osi_Sleep(&tvc->f.states);
566 if (tvc->f.states & (CBulkFetching|CDeadVnode)) {
568 vnode_recycle(AFSTOV(tvc));
575 ReleaseReadLock(&afs_xvcache);
576 ObtainWriteLock(&afs_xcbhash, 450);
577 afs_DequeueCallback(tvc);
578 tvc->f.states &= ~(CStatd | CUnique | CBulkFetching);
579 ReleaseWriteLock(&afs_xcbhash);
580 if ((tvc->f.fid.Fid.Vnode & 1 || (vType(tvc) == VDIR)))
581 osi_dnlc_purgedp(tvc);
582 afs_Trace3(afs_iclSetp, CM_TRACE_CALLBACK,
583 ICL_TYPE_POINTER, tvc, ICL_TYPE_INT32,
584 tvc->f.states, ICL_TYPE_LONG, 0);
586 lastCallBack_vnode = afid->Vnode;
587 lastCallBack_dv = tvc->mstat.DataVersion.low;
588 osi_GetuTime(&lastCallBack_time);
590 #ifdef AFS_DARWIN80_ENV
591 vnode_put(AFSTOV(tvc));
593 ObtainReadLock(&afs_xvcache);
597 } /*Walk through hash table */
598 ReleaseReadLock(&afs_xvcache);
599 } /*Clear callbacks for one file */
602 /*Fid has non-zero volume ID */
604 * Always return a predictable value.
611 /*------------------------------------------------------------------------
612 * EXPORTED SRXAFSCB_CallBack
615 * Routine called by the server-side callback RPC interface to
616 * implement passing in callback information.
620 * a_call : Ptr to Rx call on which this request came in.
621 * a_fids : Ptr to array of fids involved.
622 * a_callbacks : Ptr to matching callback info for the fids.
628 * Nothing interesting.
632 *------------------------------------------------------------------------*/
635 SRXAFSCB_CallBack(struct rx_call *a_call, struct AFSCBFids *a_fids,
636 struct AFSCBs *a_callbacks)
638 int i; /*Loop variable */
639 struct AFSFid *tfid; /*Ptr to current fid */
640 struct rx_connection *tconn; /*Call's connection */
646 XSTATS_START_CMTIME(AFS_STATS_CM_RPCIDX_CALLBACK);
648 AFS_STATCNT(SRXAFSCB_CallBack);
649 if (!(tconn = rx_ConnectionOf(a_call)))
651 tfid = (struct AFSFid *)a_fids->AFSCBFids_val;
654 * For now, we ignore callbacks, since the File Server only *breaks*
655 * callbacks at present.
657 for (i = 0; i < a_fids->AFSCBFids_len; i++)
658 ClearCallBack(tconn, &tfid[i]);
666 } /*SRXAFSCB_CallBack */
669 /*------------------------------------------------------------------------
670 * EXPORTED SRXAFSCB_Probe
673 * Routine called by the server-side callback RPC interface to
674 * implement ``probing'' the Cache Manager, just making sure it's
678 * a_call : Ptr to Rx call on which this request came in.
684 * Nothing interesting.
688 *------------------------------------------------------------------------*/
691 SRXAFSCB_Probe(struct rx_call *a_call)
697 AFS_STATCNT(SRXAFSCB_Probe);
699 XSTATS_START_CMTIME(AFS_STATS_CM_RPCIDX_PROBE);
706 } /*SRXAFSCB_Probe */
709 /*------------------------------------------------------------------------
710 * EXPORTED SRXAFSCB_InitCallBackState
713 * Routine called by the server-side callback RPC interface to
714 * implement clearing all callbacks from this host.
717 * a_call : Ptr to Rx call on which this request came in.
723 * Nothing interesting.
727 *------------------------------------------------------------------------*/
730 SRXAFSCB_InitCallBackState(struct rx_call *a_call)
734 struct rx_connection *tconn;
735 struct rx_peer *peer;
742 XSTATS_START_CMTIME(AFS_STATS_CM_RPCIDX_INITCALLBACKSTATE);
743 AFS_STATCNT(SRXAFSCB_InitCallBackState);
746 * Find the address of the host making this call
748 if ((tconn = rx_ConnectionOf(a_call)) && (peer = rx_PeerOf(tconn))) {
751 afs_oddCBs++; /*Including any missed via create race */
752 afs_evenCBs++; /*Including any missed via create race */
754 ts = afs_FindServer(rx_HostOf(peer), rx_PortOf(peer), (afsUUID *) 0,
757 for (i = 0; i < VCSIZE; i++)
758 for (tvc = afs_vhashT[i]; tvc; tvc = tvc->hnext) {
759 if (tvc->callback == ts) {
760 ObtainWriteLock(&afs_xcbhash, 451);
761 afs_DequeueCallback(tvc);
762 tvc->callback = NULL;
763 tvc->f.states &= ~(CStatd | CUnique | CBulkFetching);
764 ReleaseWriteLock(&afs_xcbhash);
768 /* capabilities need be requested again */
769 ts->flags &= ~SCAPS_KNOWN;
774 /* find any volumes residing on this server and flush their state */
779 for (i = 0; i < NVOLS; i++)
780 for (tv = afs_volumes[i]; tv; tv = tv->next) {
781 for (j = 0; j < AFS_MAXHOSTS; j++)
782 if (tv->serverHost[j] == ts)
783 afs_ResetVolumeInfo(tv);
786 osi_dnlc_purge(); /* may be a little bit extreme */
795 } /*SRXAFSCB_InitCallBackState */
798 /*------------------------------------------------------------------------
799 * EXPORTED SRXAFSCB_XStatsVersion
802 * Routine called by the server-side callback RPC interface to
803 * implement pulling out the xstat version number for the Cache
807 * a_versionP : Ptr to the version number variable to set.
813 * Nothing interesting.
817 *------------------------------------------------------------------------*/
820 SRXAFSCB_XStatsVersion(struct rx_call *a_call, afs_int32 * a_versionP)
827 XSTATS_START_CMTIME(AFS_STATS_CM_RPCIDX_XSTATSVERSION);
829 *a_versionP = AFSCB_XSTAT_VERSION;
836 } /*SRXAFSCB_XStatsVersion */
839 /*------------------------------------------------------------------------
840 * EXPORTED SRXAFSCB_GetXStats
843 * Routine called by the server-side callback RPC interface to
844 * implement getting the given data collection from the extended
845 * Cache Manager statistics.
848 * a_call : Ptr to Rx call on which this request came in.
849 * a_clientVersionNum : Client version number.
850 * a_opCode : Desired operation.
851 * a_serverVersionNumP : Ptr to version number to set.
852 * a_timeP : Ptr to time value (seconds) to set.
853 * a_dataArray : Ptr to variable array structure to return
860 * Nothing interesting.
864 *------------------------------------------------------------------------*/
867 SRXAFSCB_GetXStats(struct rx_call *a_call, afs_int32 a_clientVersionNum,
868 afs_int32 a_collectionNumber, afs_int32 * a_srvVersionNumP,
869 afs_int32 * a_timeP, AFSCB_CollData * a_dataP)
871 int code; /*Return value */
872 afs_int32 *dataBuffP; /*Ptr to data to be returned */
873 afs_int32 dataBytes; /*Bytes in data buffer */
878 XSTATS_START_CMTIME(AFS_STATS_CM_RPCIDX_GETXSTATS);
881 * Record the time of day and the server version number.
883 *a_srvVersionNumP = AFSCB_XSTAT_VERSION;
884 *a_timeP = osi_Time();
887 * Stuff the appropriate data in there (assume victory)
893 * We're not keeping stats, so just return successfully with
896 a_dataP->AFSCB_CollData_len = 0;
897 a_dataP->AFSCB_CollData_val = NULL;
899 switch (a_collectionNumber) {
900 case AFSCB_XSTATSCOLL_CALL_INFO:
902 * Pass back all the call-count-related data.
904 * >>> We are forced to allocate a separate area in which to
905 * >>> put this stuff in by the RPC stub generator, since it
906 * >>> will be freed at the tail end of the server stub code.
908 dataBytes = sizeof(struct afs_CMStats);
909 dataBuffP = (afs_int32 *) afs_osi_Alloc(dataBytes);
910 osi_Assert(dataBuffP != NULL);
911 memcpy((char *)dataBuffP, (char *)&afs_cmstats, dataBytes);
912 a_dataP->AFSCB_CollData_len = dataBytes >> 2;
913 a_dataP->AFSCB_CollData_val = dataBuffP;
916 case AFSCB_XSTATSCOLL_PERF_INFO:
918 * Update and then pass back all the performance-related data.
919 * Note: the only performance fields that need to be computed
920 * at this time are the number of accesses for this collection
921 * and the current server record info.
923 * >>> We are forced to allocate a separate area in which to
924 * >>> put this stuff in by the RPC stub generator, since it
925 * >>> will be freed at the tail end of the server stub code.
927 afs_stats_cmperf.numPerfCalls++;
929 dataBytes = sizeof(afs_stats_cmperf);
930 dataBuffP = (afs_int32 *) afs_osi_Alloc(dataBytes);
931 osi_Assert(dataBuffP != NULL);
932 memcpy((char *)dataBuffP, (char *)&afs_stats_cmperf, dataBytes);
933 a_dataP->AFSCB_CollData_len = dataBytes >> 2;
934 a_dataP->AFSCB_CollData_val = dataBuffP;
937 case AFSCB_XSTATSCOLL_FULL_PERF_INFO:
939 * Pass back the full range of performance and statistical
940 * data available. We have to bring the normal performance
941 * data collection up to date, then copy that data into
942 * the full collection.
944 * >>> We are forced to allocate a separate area in which to
945 * >>> put this stuff in by the RPC stub generator, since it
946 * >>> will be freed at the tail end of the server stub code.
948 afs_stats_cmperf.numPerfCalls++;
950 memcpy((char *)(&(afs_stats_cmfullperf.perf)),
951 (char *)(&afs_stats_cmperf), sizeof(struct afs_stats_CMPerf));
952 afs_stats_cmfullperf.numFullPerfCalls++;
954 dataBytes = sizeof(afs_stats_cmfullperf);
955 dataBuffP = (afs_int32 *) afs_osi_Alloc(dataBytes);
956 osi_Assert(dataBuffP != NULL);
957 memcpy((char *)dataBuffP, (char *)(&afs_stats_cmfullperf), dataBytes);
958 a_dataP->AFSCB_CollData_len = dataBytes >> 2;
959 a_dataP->AFSCB_CollData_val = dataBuffP;
964 * Illegal collection number.
966 a_dataP->AFSCB_CollData_len = 0;
967 a_dataP->AFSCB_CollData_val = NULL;
969 } /*Switch on collection number */
970 #endif /* AFS_NOSTATS */
978 } /*SRXAFSCB_GetXStats */
981 /*------------------------------------------------------------------------
982 * EXPORTED afs_RXCallBackServer
985 * Body of the thread supporting callback services.
994 * Nothing interesting.
998 *------------------------------------------------------------------------*/
1001 afs_RXCallBackServer(void)
1003 AFS_STATCNT(afs_RXCallBackServer);
1008 afs_osi_Sleep(&afs_server);
1012 * Donate this process to Rx.
1014 rx_ServerProc(NULL);
1017 } /*afs_RXCallBackServer */
1020 /*------------------------------------------------------------------------
1021 * EXPORTED shutdown_CB
1024 * Zero out important Cache Manager data structures.
1033 * Nothing interesting.
1037 *------------------------------------------------------------------------*/
1042 AFS_STATCNT(shutdown_CB);
1044 if (afs_cold_shutdown) {
1045 afs_oddCBs = afs_evenCBs = afs_allCBs = afs_allZaps = afs_oddZaps =
1046 afs_evenZaps = afs_connectBacks = 0;
1053 /*------------------------------------------------------------------------
1054 * EXPORTED SRXAFSCB_InitCallBackState2
1057 * This routine was used in the AFS 3.5 beta release, but not anymore.
1058 * It has since been replaced by SRXAFSCB_InitCallBackState3.
1061 * a_call : Ptr to Rx call on which this request came in.
1064 * RXGEN_OPCODE (always).
1067 * Nothing interesting.
1071 *------------------------------------------------------------------------*/
1074 SRXAFSCB_InitCallBackState2(struct rx_call *a_call,
1075 struct interfaceAddr *addr)
1077 return RXGEN_OPCODE;
1080 /*------------------------------------------------------------------------
1081 * EXPORTED SRXAFSCB_WhoAreYou
1084 * Routine called by the server-side callback RPC interface to
1085 * obtain a unique identifier for the client. The server uses
1086 * this identifier to figure out whether or not two RX connections
1087 * are from the same client, and to find out which addresses go
1088 * with which clients.
1091 * a_call : Ptr to Rx call on which this request came in.
1092 * addr: Ptr to return the list of interfaces for this client.
1098 * Nothing interesting.
1102 *------------------------------------------------------------------------*/
1105 SRXAFSCB_WhoAreYou(struct rx_call *a_call, struct interfaceAddr *addr)
1112 AFS_STATCNT(SRXAFSCB_WhoAreYou);
1114 memset(addr, 0, sizeof(*addr));
1116 ObtainReadLock(&afs_xinterface);
1118 /* return all network interface addresses */
1119 addr->numberOfInterfaces = afs_cb_interface.numberOfInterfaces;
1120 addr->uuid = afs_cb_interface.uuid;
1121 for (i = 0; i < afs_cb_interface.numberOfInterfaces; i++) {
1122 addr->addr_in[i] = ntohl(afs_cb_interface.addr_in[i]);
1123 addr->subnetmask[i] = ntohl(afs_cb_interface.subnetmask[i]);
1124 addr->mtu[i] = ntohl(afs_cb_interface.mtu[i]);
1127 ReleaseReadLock(&afs_xinterface);
1135 /*------------------------------------------------------------------------
1136 * EXPORTED SRXAFSCB_InitCallBackState3
1139 * Routine called by the server-side callback RPC interface to
1140 * implement clearing all callbacks from this host.
1143 * a_call : Ptr to Rx call on which this request came in.
1149 * Nothing interesting.
1153 *------------------------------------------------------------------------*/
1156 SRXAFSCB_InitCallBackState3(struct rx_call *a_call, afsUUID * a_uuid)
1161 * TBD: Lookup the server by the UUID instead of its IP address.
1163 code = SRXAFSCB_InitCallBackState(a_call);
1169 /*------------------------------------------------------------------------
1170 * EXPORTED SRXAFSCB_ProbeUuid
1173 * Routine called by the server-side callback RPC interface to
1174 * implement ``probing'' the Cache Manager, just making sure it's
1175 * still there is still the same client it used to be.
1178 * a_call : Ptr to Rx call on which this request came in.
1179 * a_uuid : Ptr to UUID that must match the client's UUID.
1182 * 0 if a_uuid matches the UUID for this client
1183 * Non-zero otherwize
1186 * Nothing interesting.
1190 *------------------------------------------------------------------------*/
1193 SRXAFSCB_ProbeUuid(struct rx_call *a_call, afsUUID * a_uuid)
1199 AFS_STATCNT(SRXAFSCB_Probe);
1201 XSTATS_START_CMTIME(AFS_STATS_CM_RPCIDX_PROBE);
1202 if (!afs_uuid_equal(a_uuid, &afs_cb_interface.uuid))
1203 code = 1; /* failure */
1212 /*------------------------------------------------------------------------
1213 * EXPORTED SRXAFSCB_GetServerPrefs
1216 * Routine to list server preferences used by this client.
1219 * a_call : Ptr to Rx call on which this request came in.
1220 * a_index : Input server index
1221 * a_srvr_addr : Output server address in host byte order
1222 * (0xffffffff on last server)
1223 * a_srvr_rank : Output server rank
1229 * Nothing interesting.
1233 *------------------------------------------------------------------------*/
1236 SRXAFSCB_GetServerPrefs(struct rx_call *a_call, afs_int32 a_index,
1237 afs_int32 * a_srvr_addr, afs_int32 * a_srvr_rank)
1243 AFS_STATCNT(SRXAFSCB_GetServerPrefs);
1245 ObtainReadLock(&afs_xserver);
1247 /* Search the hash table for the server with this index */
1248 *a_srvr_addr = 0xffffffff;
1249 *a_srvr_rank = 0xffffffff;
1250 for (i = 0, j = 0; j < NSERVERS && i <= a_index; j++) {
1251 for (sa = afs_srvAddrs[j]; sa && i <= a_index; sa = sa->next_bkt, i++) {
1253 *a_srvr_addr = ntohl(sa->sa_ip);
1254 *a_srvr_rank = sa->sa_iprank;
1259 ReleaseReadLock(&afs_xserver);
1267 /*------------------------------------------------------------------------
1268 * EXPORTED SRXAFSCB_GetCellServDB
1271 * Routine to list cells configured for this client
1274 * a_call : Ptr to Rx call on which this request came in.
1275 * a_index : Input cell index
1276 * a_name : Output cell name ("" on last cell)
1277 * a_hosts : Output cell database servers in host byte order.
1283 * Nothing interesting.
1287 *------------------------------------------------------------------------*/
1290 SRXAFSCB_GetCellServDB(struct rx_call *a_call, afs_int32 a_index,
1291 char **a_name, serverList * a_hosts)
1295 char *t_name, *p_name = NULL;
1298 AFS_STATCNT(SRXAFSCB_GetCellServDB);
1300 tcell = afs_GetCellByIndex(a_index, READ_LOCK);
1304 a_hosts->serverList_val = 0;
1305 a_hosts->serverList_len = 0;
1307 p_name = tcell->cellName;
1308 for (j = 0; j < AFSMAXCELLHOSTS && tcell->cellHosts[j]; j++);
1310 a_hosts->serverList_val = afs_osi_Alloc(j * sizeof(afs_int32));
1311 osi_Assert(a_hosts->serverList_val != NULL);
1312 a_hosts->serverList_len = j;
1313 for (j = 0; j < AFSMAXCELLHOSTS && tcell->cellHosts[j]; j++)
1314 a_hosts->serverList_val[j] =
1315 ntohl(tcell->cellHosts[j]->addr->sa_ip);
1316 afs_PutCell(tcell, READ_LOCK);
1319 t_name = afs_osi_Alloc(i + 1);
1320 if (t_name == NULL) {
1321 afs_osi_Free(a_hosts->serverList_val, (j * sizeof(afs_int32)));
1328 memcpy(t_name, p_name, i);
1337 /*------------------------------------------------------------------------
1338 * EXPORTED SRXAFSCB_GetLocalCell
1341 * Routine to return name of client's local cell
1344 * a_call : Ptr to Rx call on which this request came in.
1345 * a_name : Output cell name
1351 * Nothing interesting.
1355 *------------------------------------------------------------------------*/
1358 SRXAFSCB_GetLocalCell(struct rx_call *a_call, char **a_name)
1362 char *t_name, *p_name = NULL;
1365 AFS_STATCNT(SRXAFSCB_GetLocalCell);
1367 /* Search the list for the primary cell. Cell number 1 is only
1368 * the primary cell is when no other cell is explicitly marked as
1369 * the primary cell. */
1370 tcell = afs_GetPrimaryCell(READ_LOCK);
1372 p_name = tcell->cellName;
1374 plen = strlen(p_name);
1377 t_name = afs_osi_Alloc(plen + 1);
1378 if (t_name == NULL) {
1380 afs_PutCell(tcell, READ_LOCK);
1385 t_name[plen] = '\0';
1387 memcpy(t_name, p_name, plen);
1393 afs_PutCell(tcell, READ_LOCK);
1399 * afs_MarshallCacheConfig - marshall client cache configuration
1403 * IN callerVersion - the rpc stat version of the caller.
1405 * IN config - client cache configuration.
1407 * OUT ptr - buffer where configuration is marshalled.
1414 afs_MarshallCacheConfig(afs_uint32 callerVersion, cm_initparams_v1 * config,
1417 AFS_STATCNT(afs_MarshallCacheConfig);
1419 * We currently only support version 1.
1421 *(ptr++) = config->nChunkFiles;
1422 *(ptr++) = config->nStatCaches;
1423 *(ptr++) = config->nDataCaches;
1424 *(ptr++) = config->nVolumeCaches;
1425 *(ptr++) = config->firstChunkSize;
1426 *(ptr++) = config->otherChunkSize;
1427 *(ptr++) = config->cacheSize;
1428 *(ptr++) = config->setTime;
1429 *(ptr++) = config->memCache;
1433 /*------------------------------------------------------------------------
1434 * EXPORTED SRXAFSCB_GetCacheConfig
1437 * Routine to return parameters used to initialize client cache.
1438 * Client may request any format version. Server may not return
1439 * format version greater than version requested by client.
1442 * a_call: Ptr to Rx call on which this request came in.
1443 * callerVersion: Data format version desired by the client.
1444 * serverVersion: Data format version of output data.
1445 * configCount: Number bytes allocated for output data.
1446 * config: Client cache configuration.
1452 * Nothing interesting.
1456 *------------------------------------------------------------------------*/
1459 SRXAFSCB_GetCacheConfig(struct rx_call *a_call, afs_uint32 callerVersion,
1460 afs_uint32 * serverVersion, afs_uint32 * configCount,
1461 cacheConfig * config)
1463 afs_uint32 *t_config;
1465 cm_initparams_v1 cm_config;
1468 AFS_STATCNT(SRXAFSCB_GetCacheConfig);
1471 * Currently only support version 1
1473 allocsize = sizeof(cm_initparams_v1);
1474 t_config = afs_osi_Alloc(allocsize);
1475 if (t_config == NULL) {
1480 cm_config.nChunkFiles = cm_initParams.cmi_nChunkFiles;
1481 cm_config.nStatCaches = cm_initParams.cmi_nStatCaches;
1482 cm_config.nDataCaches = cm_initParams.cmi_nDataCaches;
1483 cm_config.nVolumeCaches = cm_initParams.cmi_nVolumeCaches;
1484 cm_config.firstChunkSize = cm_initParams.cmi_firstChunkSize;
1485 cm_config.otherChunkSize = cm_initParams.cmi_otherChunkSize;
1486 cm_config.cacheSize = cm_initParams.cmi_cacheSize;
1487 cm_config.setTime = cm_initParams.cmi_setTime;
1488 cm_config.memCache = cm_initParams.cmi_memCache;
1490 afs_MarshallCacheConfig(callerVersion, &cm_config, t_config);
1492 *serverVersion = AFS_CLIENT_RETRIEVAL_FIRST_EDITION;
1493 *configCount = allocsize;
1494 config->cacheConfig_val = t_config;
1495 config->cacheConfig_len = allocsize / sizeof(afs_uint32);
1502 /*------------------------------------------------------------------------
1503 * EXPORTED SRXAFSCB_FetchData
1506 * Routine to do third party move from a remioserver to the original
1507 * issuer of an ArchiveData request. Presently supported only by the
1508 * "fs" command, not by the AFS client.
1511 * rxcall: Ptr to Rx call on which this request came in.
1512 * Fid: pointer to AFSFid structure.
1513 * Fd: File descriptor inside fs command.
1514 * Position: Offset in the file.
1515 * Length: Data length to transfer.
1516 * TotalLength: Pointer to total file length field
1522 * Nothing interesting.
1525 *------------------------------------------------------------------------*/
1527 SRXAFSCB_FetchData(struct rx_call *rxcall, struct AFSFid *Fid, afs_int32 Fd,
1528 afs_int64 Position, afs_int64 Length,
1529 afs_int64 * TotalLength)
1534 /*------------------------------------------------------------------------
1535 * EXPORTED SRXAFSCB_StoreData
1538 * Routine to do third party move from a remioserver to the original
1539 * issuer of a RetrieveData request. Presently supported only by the
1540 * "fs" command, not by the AFS client.
1543 * rxcall: Ptr to Rx call on which this request came in.
1544 * Fid: pointer to AFSFid structure.
1545 * Fd: File descriptor inside fs command.
1546 * Position: Offset in the file.
1547 * Length: Data length to transfer.
1548 * TotalLength: Pointer to total file length field
1554 * Nothing interesting.
1558 *------------------------------------------------------------------------*/
1560 SRXAFSCB_StoreData(struct rx_call *rxcall, struct AFSFid *Fid, afs_int32 Fd,
1561 afs_int64 Position, afs_int64 Length,
1562 afs_int64 * TotalLength)
1567 /*------------------------------------------------------------------------
1568 * EXPORTED SRXAFSCB_GetCellByNum
1571 * Routine to get information about a cell specified by its
1572 * cell number (returned by GetCE/GetCE64).
1575 * a_call : Ptr to Rx call on which this request came in.
1576 * a_cellnum : Input cell number
1577 * a_name : Output cell name (one zero byte when no such cell).
1578 * a_hosts : Output cell database servers in host byte order.
1584 * Nothing interesting.
1588 *------------------------------------------------------------------------*/
1591 SRXAFSCB_GetCellByNum(struct rx_call *a_call, afs_int32 a_cellnum,
1592 char **a_name, serverList * a_hosts)
1598 AFS_STATCNT(SRXAFSCB_GetCellByNum);
1600 a_hosts->serverList_val = 0;
1601 a_hosts->serverList_len = 0;
1603 tcell = afs_GetCellStale(a_cellnum, READ_LOCK);
1605 *a_name = afs_strdup("");
1610 ObtainReadLock(&tcell->lock);
1611 *a_name = afs_strdup(tcell->cellName);
1613 for (sn = 0; sn < AFSMAXCELLHOSTS && tcell->cellHosts[sn]; sn++);
1614 a_hosts->serverList_len = sn;
1615 a_hosts->serverList_val = afs_osi_Alloc(sn * sizeof(afs_int32));
1616 osi_Assert(a_hosts->serverList_val != NULL);
1618 for (i = 0; i < sn; i++)
1619 a_hosts->serverList_val[i] = ntohl(tcell->cellHosts[i]->addr->sa_ip);
1620 ReleaseReadLock(&tcell->lock);
1621 afs_PutCell(tcell, READ_LOCK);
1628 SRXAFSCB_TellMeAboutYourself(struct rx_call *a_call,
1629 struct interfaceAddr *addr,
1630 Capabilities * capabilities)
1634 afs_uint32 *dataBuffP;
1635 afs_int32 dataBytes;
1639 AFS_STATCNT(SRXAFSCB_WhoAreYou);
1641 ObtainReadLock(&afs_xinterface);
1643 /* return all network interface addresses */
1644 addr->numberOfInterfaces = afs_cb_interface.numberOfInterfaces;
1645 addr->uuid = afs_cb_interface.uuid;
1646 for (i = 0; i < afs_cb_interface.numberOfInterfaces; i++) {
1647 addr->addr_in[i] = ntohl(afs_cb_interface.addr_in[i]);
1648 addr->subnetmask[i] = ntohl(afs_cb_interface.subnetmask[i]);
1649 addr->mtu[i] = ntohl(afs_cb_interface.mtu[i]);
1652 ReleaseReadLock(&afs_xinterface);
1656 dataBytes = 1 * sizeof(afs_uint32);
1657 dataBuffP = afs_osi_Alloc(dataBytes);
1658 osi_Assert(dataBuffP != NULL);
1659 dataBuffP[0] = CLIENT_CAPABILITY_ERRORTRANS;
1660 capabilities->Capabilities_len = dataBytes / sizeof(afs_uint32);
1661 capabilities->Capabilities_val = dataBuffP;
1667 #if 0 && defined(AFS_LINUX24_ENV)
1668 extern struct vcache *afs_globalVp;
1670 int recurse_dcache_parent(parent, a_index, addr, inode, flags, time, fileName)
1671 struct dentry * parent;
1679 struct dentry *this_parent = parent;
1680 struct list_head *next;
1682 struct dentry *dentry;
1685 next = this_parent->d_subdirs.next;
1687 while (next != &this_parent->d_subdirs) {
1688 struct list_head *tmp = next;
1689 dentry = list_entry(tmp, struct dentry, d_child);
1695 * Descend a level if the d_subdirs list is non-empty.
1697 if (!list_empty(&dentry->d_subdirs)) {
1698 this_parent = dentry;
1703 * All done at this level ... ascend and resume the search.
1705 if (this_parent != parent) {
1706 next = this_parent->d_child.next;
1707 this_parent = this_parent->d_parent;
1713 if (d_unhashed(dentry))
1718 *fileName = afs_strdup(dentry->d_name.name?dentry->d_name.name:"");
1719 *inode = ITOAFS(dentry->d_inode);
1720 *addr = atomic_read(&(dentry)->d_count);
1721 *time = dentry->d_time;
1730 SRXAFSCB_GetDE(struct rx_call *a_call, afs_int32 a_index, afs_int32 *addr,
1731 afs_int32 *inode, afs_int32 *flags, afs_int32 *time,
1733 { /*SRXAFSCB_GetDE*/
1734 int code = 0; /*Return code*/
1735 #if 0 && defined(AFS_LINUX24_ENV)
1736 int i; /*Loop variable*/
1737 struct vcache *tvc = afs_globalVp;
1738 struct dentry *dentry;
1739 struct list_head *cur, *head = &(AFSTOI(tvc))->i_dentry;
1741 #ifdef RX_ENABLE_LOCKS
1743 #endif /* RX_ENABLE_LOCKS */
1745 #if defined(AFS_LINUX24_ENV)
1746 spin_lock(&dcache_lock);
1750 while ((cur = cur->next) != head) {
1751 dentry = list_entry(cur, struct dentry, d_alias);
1753 dget_locked(dentry);
1755 #if defined(AFS_LINUX24_ENV)
1756 spin_unlock(&dcache_lock);
1762 if (recurse_dcache_parent(dentry, a_index, addr, inode, flags, time, fileName) == 0) {
1773 *fileName = afs_strdup("");
1777 if (d_unhashed(dentry))
1782 *fileName = afs_strdup(dentry->d_name.name?dentry->d_name.name:"");
1783 *inode = ITOAFS(dentry->d_inode);
1784 *addr = atomic_read(&(dentry)->d_count);
1785 *time = dentry->d_time;
1792 #ifdef RX_ENABLE_LOCKS
1794 #endif /* RX_ENABLE_LOCKS */
1798 } /*SRXAFSCB_GetDE*/