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"
22 #include "afs/sysincludes.h" /*Standard vendor system headers */
23 #include "afsincludes.h" /*AFS-based standard headers */
24 #include "afs/afs_stats.h" /*Cache Manager stats */
25 #include "afs/afs_args.h"
27 afs_int32 afs_allCBs = 0; /*Break callbacks on all objects */
28 afs_int32 afs_oddCBs = 0; /*Break callbacks on dirs */
29 afs_int32 afs_evenCBs = 0; /*Break callbacks received on files */
30 afs_int32 afs_allZaps = 0; /*Objects entries deleted */
31 afs_int32 afs_oddZaps = 0; /*Dir cache entries deleted */
32 afs_int32 afs_evenZaps = 0; /*File cache entries deleted */
33 afs_int32 afs_connectBacks = 0;
36 * Some debugging aids.
38 static struct ltable {
43 "afs_xvcache", (char *)&afs_xvcache}, {
44 "afs_xdcache", (char *)&afs_xdcache}, {
45 "afs_xserver", (char *)&afs_xserver}, {
46 "afs_xvcb", (char *)&afs_xvcb}, {
47 "afs_xbrs", (char *)&afs_xbrs}, {
48 "afs_xcell", (char *)&afs_xcell}, {
49 "afs_xconn", (char *)&afs_xconn}, {
50 "afs_xuser", (char *)&afs_xuser}, {
51 "afs_xvolume", (char *)&afs_xvolume}, {
52 "puttofile", (char *)&afs_puttofileLock}, {
53 "afs_ftf", (char *)&afs_ftf}, {
54 "afs_xcbhash", (char *)&afs_xcbhash}, {
55 "afs_xaxs", (char *)&afs_xaxs}, {
56 "afs_xinterface", (char *)&afs_xinterface},
59 "afs_xosi", (char *)&afs_xosi},
62 "afs_xsrvAddr", (char *)&afs_xsrvAddr},
64 "afs_xvreclaim", (char *)&afs_xvreclaim},
66 { "afsdb_client_lock", (char *)&afsdb_client_lock},
67 { "afsdb_req_lock", (char *)&afsdb_req_lock},
70 { "afs_discon_lock", (char *)&afs_discon_lock},
71 { "afs_DDirtyVCListLock", (char *)&afs_DDirtyVCListLock},
74 unsigned long lastCallBack_vnode;
75 unsigned int lastCallBack_dv;
76 osi_timeval_t lastCallBack_time;
78 /* these are for storing alternate interface addresses */
79 struct interfaceAddr afs_cb_interface;
81 /*------------------------------------------------------------------------
82 * EXPORTED SRXAFSCB_GetCE
85 * Routine called by the server-side callback RPC interface to
86 * implement pulling out the contents of the i'th cache entry.
89 * a_call : Ptr to Rx call on which this request came in.
90 * a_index : Index of desired cache entry.
91 * a_result : Ptr to a buffer for the given cache entry.
94 * 0 if everything went fine,
95 * 1 if we were given a bad index.
98 * Nothing interesting.
102 *------------------------------------------------------------------------*/
105 SRXAFSCB_GetCE(struct rx_call *a_call, afs_int32 a_index,
106 struct AFSDBCacheEntry *a_result)
109 register int i; /*Loop variable */
110 register struct vcache *tvc; /*Ptr to current cache entry */
111 int code; /*Return code */
116 XSTATS_START_CMTIME(AFS_STATS_CM_RPCIDX_GETCE);
118 AFS_STATCNT(SRXAFSCB_GetCE);
119 for (i = 0; i < VCSIZE; i++) {
120 for (tvc = afs_vhashT[i]; tvc; tvc = tvc->hnext) {
124 } /*Zip through current hash chain */
125 } /*Zip through hash chains */
135 * Copy out the located entry.
137 a_result->addr = afs_data_pointer_to_int32(tvc);
138 a_result->cell = tvc->fid.Cell;
139 a_result->netFid.Volume = tvc->fid.Fid.Volume;
140 a_result->netFid.Vnode = tvc->fid.Fid.Vnode;
141 a_result->netFid.Unique = tvc->fid.Fid.Unique;
142 a_result->lock.waitStates = tvc->lock.wait_states;
143 a_result->lock.exclLocked = tvc->lock.excl_locked;
144 a_result->lock.readersReading = tvc->lock.readers_reading;
145 a_result->lock.numWaiting = tvc->lock.num_waiting;
146 #if defined(INSTRUMENT_LOCKS)
147 a_result->lock.pid_last_reader = MyPidxx2Pid(tvc->lock.pid_last_reader);
148 a_result->lock.pid_writer = MyPidxx2Pid(tvc->lock.pid_writer);
149 a_result->lock.src_indicator = tvc->lock.src_indicator;
151 /* On osf20 , the vcache does not maintain these three fields */
152 a_result->lock.pid_last_reader = 0;
153 a_result->lock.pid_writer = 0;
154 a_result->lock.src_indicator = 0;
155 #endif /* AFS_OSF20_ENV */
156 #ifdef AFS_64BIT_CLIENT
157 a_result->Length = (afs_int32) tvc->m.Length & 0xffffffff;
158 #else /* AFS_64BIT_CLIENT */
159 a_result->Length = tvc->m.Length;
160 #endif /* AFS_64BIT_CLIENT */
161 a_result->DataVersion = hgetlo(tvc->m.DataVersion);
162 a_result->callback = afs_data_pointer_to_int32(tvc->callback); /* XXXX Now a pointer; change it XXXX */
163 a_result->cbExpires = tvc->cbExpires;
164 if (tvc->states & CVInit) {
165 a_result->refCount = 1;
167 #ifdef AFS_DARWIN80_ENV
168 a_result->refCount = vnode_isinuse(AFSTOV(tvc),0)?1:0; /* XXX fix */
170 a_result->refCount = VREFCOUNT(tvc);
173 a_result->opens = tvc->opens;
174 a_result->writers = tvc->execsOrWriters;
175 a_result->mvstat = tvc->mvstat;
176 a_result->states = tvc->states;
180 * Return our results.
189 } /*SRXAFSCB_GetCE */
192 SRXAFSCB_GetCE64(struct rx_call *a_call, afs_int32 a_index,
193 struct AFSDBCacheEntry64 *a_result)
195 register int i; /*Loop variable */
196 register struct vcache *tvc; /*Ptr to current cache entry */
197 int code; /*Return code */
202 XSTATS_START_CMTIME(AFS_STATS_CM_RPCIDX_GETCE);
204 AFS_STATCNT(SRXAFSCB_GetCE64);
205 for (i = 0; i < VCSIZE; i++) {
206 for (tvc = afs_vhashT[i]; tvc; tvc = tvc->hnext) {
210 } /*Zip through current hash chain */
211 } /*Zip through hash chains */
221 * Copy out the located entry.
223 a_result->addr = afs_data_pointer_to_int32(tvc);
224 a_result->cell = tvc->fid.Cell;
225 a_result->netFid.Volume = tvc->fid.Fid.Volume;
226 a_result->netFid.Vnode = tvc->fid.Fid.Vnode;
227 a_result->netFid.Unique = tvc->fid.Fid.Unique;
228 a_result->lock.waitStates = tvc->lock.wait_states;
229 a_result->lock.exclLocked = tvc->lock.excl_locked;
230 a_result->lock.readersReading = tvc->lock.readers_reading;
231 a_result->lock.numWaiting = tvc->lock.num_waiting;
232 #if defined(INSTRUMENT_LOCKS)
233 a_result->lock.pid_last_reader = MyPidxx2Pid(tvc->lock.pid_last_reader);
234 a_result->lock.pid_writer = MyPidxx2Pid(tvc->lock.pid_writer);
235 a_result->lock.src_indicator = tvc->lock.src_indicator;
237 /* On osf20 , the vcache does not maintain these three fields */
238 a_result->lock.pid_last_reader = 0;
239 a_result->lock.pid_writer = 0;
240 a_result->lock.src_indicator = 0;
241 #endif /* AFS_OSF20_ENV */
242 #if !defined(AFS_64BIT_ENV)
243 a_result->Length.high = 0;
244 a_result->Length.low = tvc->m.Length;
246 a_result->Length = tvc->m.Length;
248 a_result->DataVersion = hgetlo(tvc->m.DataVersion);
249 a_result->callback = afs_data_pointer_to_int32(tvc->callback); /* XXXX Now a pointer; change it XXXX */
250 a_result->cbExpires = tvc->cbExpires;
251 if (tvc->states & CVInit) {
252 a_result->refCount = 1;
254 #ifdef AFS_DARWIN80_ENV
255 a_result->refCount = vnode_isinuse(AFSTOV(tvc),0)?1:0; /* XXX fix */
257 a_result->refCount = VREFCOUNT(tvc);
260 a_result->opens = tvc->opens;
261 a_result->writers = tvc->execsOrWriters;
262 a_result->mvstat = tvc->mvstat;
263 a_result->states = tvc->states;
267 * Return our results.
276 } /*SRXAFSCB_GetCE64 */
279 /*------------------------------------------------------------------------
280 * EXPORTED SRXAFSCB_GetLock
283 * Routine called by the server-side callback RPC interface to
284 * implement pulling out the contents of a lock in the lock
288 * a_call : Ptr to Rx call on which this request came in.
289 * a_index : Index of desired lock.
290 * a_result : Ptr to a buffer for the given lock.
293 * 0 if everything went fine,
294 * 1 if we were given a bad index.
297 * Nothing interesting.
301 *------------------------------------------------------------------------*/
304 SRXAFSCB_GetLock(struct rx_call *a_call, afs_int32 a_index,
305 struct AFSDBLock *a_result)
307 struct ltable *tl; /*Ptr to lock table entry */
308 int nentries; /*Num entries in table */
309 int code; /*Return code */
314 XSTATS_START_CMTIME(AFS_STATS_CM_RPCIDX_GETLOCK);
316 AFS_STATCNT(SRXAFSCB_GetLock);
317 nentries = sizeof(ltable) / sizeof(struct ltable);
318 if (a_index < 0 || a_index >= nentries+afs_cellindex) {
323 } else if (a_index >= nentries) {
324 struct cell *tc = afs_GetCellByIndex(a_index-nentries, 0);
325 strcpy(a_result->name, tc->cellName);
326 a_result->lock.waitStates =
327 ((struct afs_lock *)&(tc->lock))->wait_states;
328 a_result->lock.exclLocked =
329 ((struct afs_lock *)&(tc->lock))->excl_locked;
330 a_result->lock.readersReading =
331 ((struct afs_lock *)&(tc->lock))->readers_reading;
332 a_result->lock.numWaiting =
333 ((struct afs_lock *)&(tc->lock))->num_waiting;
334 #ifdef INSTRUMENT_LOCKS
335 a_result->lock.pid_last_reader =
336 MyPidxx2Pid(((struct afs_lock *)&(tc->lock))->pid_last_reader);
337 a_result->lock.pid_writer =
338 MyPidxx2Pid(((struct afs_lock *)&(tc->lock))->pid_writer);
339 a_result->lock.src_indicator =
340 ((struct afs_lock *)&(tc->lock))->src_indicator;
342 a_result->lock.pid_last_reader = 0;
343 a_result->lock.pid_writer = 0;
344 a_result->lock.src_indicator = 0;
349 * Found it - copy out its contents.
351 tl = <able[a_index];
352 strcpy(a_result->name, tl->name);
353 a_result->lock.waitStates =
354 ((struct afs_lock *)(tl->addr))->wait_states;
355 a_result->lock.exclLocked =
356 ((struct afs_lock *)(tl->addr))->excl_locked;
357 a_result->lock.readersReading =
358 ((struct afs_lock *)(tl->addr))->readers_reading;
359 a_result->lock.numWaiting =
360 ((struct afs_lock *)(tl->addr))->num_waiting;
361 #ifdef INSTRUMENT_LOCKS
362 a_result->lock.pid_last_reader =
363 MyPidxx2Pid(((struct afs_lock *)(tl->addr))->pid_last_reader);
364 a_result->lock.pid_writer =
365 MyPidxx2Pid(((struct afs_lock *)(tl->addr))->pid_writer);
366 a_result->lock.src_indicator =
367 ((struct afs_lock *)(tl->addr))->src_indicator;
369 a_result->lock.pid_last_reader = 0;
370 a_result->lock.pid_writer = 0;
371 a_result->lock.src_indicator = 0;
382 } /*SRXAFSCB_GetLock */
385 /*------------------------------------------------------------------------
386 * static ClearCallBack
389 * Clear out callback information for the specified file, or
390 * even a whole volume. Used to worry about callback was from
391 * within the particular cell or not. Now we don't bother with
392 * that anymore; it's not worth the time.
395 * a_conn : Ptr to Rx connection involved.
396 * a_fid : Ptr to AFS fid being cleared.
402 * Nothing interesting.
407 Appears to need to be called with GLOCK held, as the icl_Event4 stuff asserts otherwise
409 *------------------------------------------------------------------------*/
412 ClearCallBack(register struct rx_connection *a_conn,
413 register struct AFSFid *a_fid)
415 register struct vcache *tvc;
417 struct VenusFid localFid;
419 #ifdef AFS_DARWIN80_ENV
423 AFS_STATCNT(ClearCallBack);
428 * XXXX Don't hold any server locks here because of callback protocol XXX
431 localFid.Fid.Volume = a_fid->Volume;
432 localFid.Fid.Vnode = a_fid->Vnode;
433 localFid.Fid.Unique = a_fid->Unique;
436 * Volume ID of zero means don't do anything.
438 if (a_fid->Volume != 0) {
439 if (a_fid->Vnode == 0) {
440 struct afs_q *tq, *uq;
442 * Clear callback for the whole volume. Zip through the
443 * hash chain, nullifying entries whose volume ID matches.
446 ObtainReadLock(&afs_xvcache);
447 i = VCHashV(&localFid);
448 for (tq = afs_vhashTV[i].prev; tq != &afs_vhashTV[i]; tq = uq) {
451 if (tvc->fid.Fid.Volume == a_fid->Volume) {
452 tvc->callback = NULL;
454 localFid.Cell = tvc->fid.Cell;
455 tvc->dchint = NULL; /* invalidate hints */
456 if (tvc->states & CVInit) {
457 ReleaseReadLock(&afs_xvcache);
458 afs_osi_Sleep(&tvc->states);
461 #ifdef AFS_DARWIN80_ENV
462 if (tvc->states & CDeadVnode) {
463 ReleaseReadLock(&afs_xvcache);
464 afs_osi_Sleep(&tvc->states);
468 #if defined(AFS_SGI_ENV) || defined(AFS_OSF_ENV) || defined(AFS_SUN5_ENV) || defined(AFS_HPUX_ENV) || defined(AFS_LINUX20_ENV)
469 VN_HOLD(AFSTOV(tvc));
471 #ifdef AFS_DARWIN80_ENV
482 #if defined(AFS_DARWIN_ENV) || defined(AFS_XBSD_ENV)
485 VREFCOUNT_INC(tvc); /* AIX, apparently */
489 ReleaseReadLock(&afs_xvcache);
490 ObtainWriteLock(&afs_xcbhash, 449);
491 afs_DequeueCallback(tvc);
492 tvc->states &= ~(CStatd | CUnique | CBulkFetching);
494 if (tvc->fid.Fid.Vnode & 1)
498 ReleaseWriteLock(&afs_xcbhash);
499 if ((tvc->fid.Fid.Vnode & 1 || (vType(tvc) == VDIR)))
500 osi_dnlc_purgedp(tvc);
501 afs_Trace3(afs_iclSetp, CM_TRACE_CALLBACK,
502 ICL_TYPE_POINTER, tvc, ICL_TYPE_INT32,
503 tvc->states, ICL_TYPE_INT32,
505 #ifdef AFS_DARWIN80_ENV
506 vnode_put(AFSTOV(tvc));
508 ObtainReadLock(&afs_xvcache);
511 } else if ((tvc->states & CMValid)
512 && (tvc->mvid->Fid.Volume == a_fid->Volume)) {
513 tvc->states &= ~CMValid;
515 localFid.Cell = tvc->mvid->Cell;
518 ReleaseReadLock(&afs_xvcache);
521 * XXXX Don't hold any locks here XXXX
523 tv = afs_FindVolume(&localFid, 0);
525 afs_ResetVolumeInfo(tv);
526 afs_PutVolume(tv, 0);
527 /* invalidate mtpoint? */
529 } /*Clear callbacks for whole volume */
532 * Clear callbacks just for the one file.
536 if (a_fid->Vnode & 1)
537 afs_oddCBs++; /*Could do this on volume basis, too */
539 afs_evenCBs++; /*A particular fid was specified */
541 ObtainReadLock(&afs_xvcache);
542 i = VCHash(&localFid);
543 for (tvc = afs_vhashT[i]; tvc; tvc = uvc) {
545 if (tvc->fid.Fid.Vnode == a_fid->Vnode
546 && tvc->fid.Fid.Volume == a_fid->Volume
547 && tvc->fid.Fid.Unique == a_fid->Unique) {
548 tvc->callback = NULL;
549 tvc->dchint = NULL; /* invalidate hints */
550 if (tvc->states & CVInit) {
551 ReleaseReadLock(&afs_xvcache);
552 afs_osi_Sleep(&tvc->states);
555 #ifdef AFS_DARWIN80_ENV
556 if (tvc->states & CDeadVnode) {
557 ReleaseReadLock(&afs_xvcache);
558 afs_osi_Sleep(&tvc->states);
562 #if defined(AFS_SGI_ENV) || defined(AFS_OSF_ENV) || defined(AFS_SUN5_ENV) || defined(AFS_HPUX_ENV) || defined(AFS_LINUX20_ENV)
563 VN_HOLD(AFSTOV(tvc));
565 #ifdef AFS_DARWIN80_ENV
576 #if defined(AFS_DARWIN_ENV) || defined(AFS_XBSD_ENV)
579 VREFCOUNT_INC(tvc); /* AIX, apparently */
583 ReleaseReadLock(&afs_xvcache);
584 ObtainWriteLock(&afs_xcbhash, 450);
585 afs_DequeueCallback(tvc);
586 tvc->states &= ~(CStatd | CUnique | CBulkFetching);
587 ReleaseWriteLock(&afs_xcbhash);
588 if ((tvc->fid.Fid.Vnode & 1 || (vType(tvc) == VDIR)))
589 osi_dnlc_purgedp(tvc);
590 afs_Trace3(afs_iclSetp, CM_TRACE_CALLBACK,
591 ICL_TYPE_POINTER, tvc, ICL_TYPE_INT32,
592 tvc->states, ICL_TYPE_LONG, 0);
594 lastCallBack_vnode = afid->Vnode;
595 lastCallBack_dv = tvc->mstat.DataVersion.low;
596 osi_GetuTime(&lastCallBack_time);
598 #ifdef AFS_DARWIN80_ENV
599 vnode_put(AFSTOV(tvc));
601 ObtainReadLock(&afs_xvcache);
605 } /*Walk through hash table */
606 ReleaseReadLock(&afs_xvcache);
607 } /*Clear callbacks for one file */
610 /*Fid has non-zero volume ID */
612 * Always return a predictable value.
619 /*------------------------------------------------------------------------
620 * EXPORTED SRXAFSCB_CallBack
623 * Routine called by the server-side callback RPC interface to
624 * implement passing in callback information.
628 * a_call : Ptr to Rx call on which this request came in.
629 * a_fids : Ptr to array of fids involved.
630 * a_callbacks : Ptr to matching callback info for the fids.
636 * Nothing interesting.
640 *------------------------------------------------------------------------*/
643 SRXAFSCB_CallBack(struct rx_call *a_call, register struct AFSCBFids *a_fids,
644 struct AFSCBs *a_callbacks)
646 register int i; /*Loop variable */
647 struct AFSFid *tfid; /*Ptr to current fid */
648 register struct rx_connection *tconn; /*Call's connection */
654 XSTATS_START_CMTIME(AFS_STATS_CM_RPCIDX_CALLBACK);
656 AFS_STATCNT(SRXAFSCB_CallBack);
657 if (!(tconn = rx_ConnectionOf(a_call)))
659 tfid = (struct AFSFid *)a_fids->AFSCBFids_val;
662 * For now, we ignore callbacks, since the File Server only *breaks*
663 * callbacks at present.
665 for (i = 0; i < a_fids->AFSCBFids_len; i++)
666 ClearCallBack(tconn, &tfid[i]);
674 } /*SRXAFSCB_CallBack */
677 /*------------------------------------------------------------------------
678 * EXPORTED SRXAFSCB_Probe
681 * Routine called by the server-side callback RPC interface to
682 * implement ``probing'' the Cache Manager, just making sure it's
686 * a_call : Ptr to Rx call on which this request came in.
692 * Nothing interesting.
696 *------------------------------------------------------------------------*/
699 SRXAFSCB_Probe(struct rx_call *a_call)
705 AFS_STATCNT(SRXAFSCB_Probe);
707 XSTATS_START_CMTIME(AFS_STATS_CM_RPCIDX_PROBE);
714 } /*SRXAFSCB_Probe */
717 /*------------------------------------------------------------------------
718 * EXPORTED SRXAFSCB_InitCallBackState
721 * Routine called by the server-side callback RPC interface to
722 * implement clearing all callbacks from this host.
725 * a_call : Ptr to Rx call on which this request came in.
731 * Nothing interesting.
735 *------------------------------------------------------------------------*/
738 SRXAFSCB_InitCallBackState(struct rx_call *a_call)
741 register struct vcache *tvc;
742 register struct rx_connection *tconn;
743 register struct rx_peer *peer;
750 XSTATS_START_CMTIME(AFS_STATS_CM_RPCIDX_INITCALLBACKSTATE);
751 AFS_STATCNT(SRXAFSCB_InitCallBackState);
754 * Find the address of the host making this call
756 if ((tconn = rx_ConnectionOf(a_call)) && (peer = rx_PeerOf(tconn))) {
759 afs_oddCBs++; /*Including any missed via create race */
760 afs_evenCBs++; /*Including any missed via create race */
762 ts = afs_FindServer(rx_HostOf(peer), rx_PortOf(peer), (afsUUID *) 0,
765 for (i = 0; i < VCSIZE; i++)
766 for (tvc = afs_vhashT[i]; tvc; tvc = tvc->hnext) {
767 if (tvc->callback == ts) {
768 ObtainWriteLock(&afs_xcbhash, 451);
769 afs_DequeueCallback(tvc);
770 tvc->callback = NULL;
771 tvc->states &= ~(CStatd | CUnique | CBulkFetching);
772 ReleaseWriteLock(&afs_xcbhash);
779 /* find any volumes residing on this server and flush their state */
781 register struct volume *tv;
784 for (i = 0; i < NVOLS; i++)
785 for (tv = afs_volumes[i]; tv; tv = tv->next) {
786 for (j = 0; j < MAXHOSTS; j++)
787 if (tv->serverHost[j] == ts)
788 afs_ResetVolumeInfo(tv);
791 osi_dnlc_purge(); /* may be a little bit extreme */
800 } /*SRXAFSCB_InitCallBackState */
803 /*------------------------------------------------------------------------
804 * EXPORTED SRXAFSCB_XStatsVersion
807 * Routine called by the server-side callback RPC interface to
808 * implement pulling out the xstat version number for the Cache
812 * a_versionP : Ptr to the version number variable to set.
818 * Nothing interesting.
822 *------------------------------------------------------------------------*/
825 SRXAFSCB_XStatsVersion(struct rx_call *a_call, afs_int32 * a_versionP)
832 XSTATS_START_CMTIME(AFS_STATS_CM_RPCIDX_XSTATSVERSION);
834 *a_versionP = AFSCB_XSTAT_VERSION;
841 } /*SRXAFSCB_XStatsVersion */
844 /*------------------------------------------------------------------------
845 * EXPORTED SRXAFSCB_GetXStats
848 * Routine called by the server-side callback RPC interface to
849 * implement getting the given data collection from the extended
850 * Cache Manager statistics.
853 * a_call : Ptr to Rx call on which this request came in.
854 * a_clientVersionNum : Client version number.
855 * a_opCode : Desired operation.
856 * a_serverVersionNumP : Ptr to version number to set.
857 * a_timeP : Ptr to time value (seconds) to set.
858 * a_dataArray : Ptr to variable array structure to return
865 * Nothing interesting.
869 *------------------------------------------------------------------------*/
872 SRXAFSCB_GetXStats(struct rx_call *a_call, afs_int32 a_clientVersionNum,
873 afs_int32 a_collectionNumber, afs_int32 * a_srvVersionNumP,
874 afs_int32 * a_timeP, AFSCB_CollData * a_dataP)
876 register int code; /*Return value */
877 afs_int32 *dataBuffP; /*Ptr to data to be returned */
878 afs_int32 dataBytes; /*Bytes in data buffer */
883 XSTATS_START_CMTIME(AFS_STATS_CM_RPCIDX_GETXSTATS);
886 * Record the time of day and the server version number.
888 *a_srvVersionNumP = AFSCB_XSTAT_VERSION;
889 *a_timeP = osi_Time();
892 * Stuff the appropriate data in there (assume victory)
898 * We're not keeping stats, so just return successfully with
901 a_dataP->AFSCB_CollData_len = 0;
902 a_dataP->AFSCB_CollData_val = NULL;
904 switch (a_collectionNumber) {
905 case AFSCB_XSTATSCOLL_CALL_INFO:
907 * Pass back all the call-count-related data.
909 * >>> We are forced to allocate a separate area in which to
910 * >>> put this stuff in by the RPC stub generator, since it
911 * >>> will be freed at the tail end of the server stub code.
913 dataBytes = sizeof(struct afs_CMStats);
914 dataBuffP = (afs_int32 *) afs_osi_Alloc(dataBytes);
915 memcpy((char *)dataBuffP, (char *)&afs_cmstats, dataBytes);
916 a_dataP->AFSCB_CollData_len = dataBytes >> 2;
917 a_dataP->AFSCB_CollData_val = dataBuffP;
920 case AFSCB_XSTATSCOLL_PERF_INFO:
922 * Update and then pass back all the performance-related data.
923 * Note: the only performance fields that need to be computed
924 * at this time are the number of accesses for this collection
925 * and the current server record info.
927 * >>> We are forced to allocate a separate area in which to
928 * >>> put this stuff in by the RPC stub generator, since it
929 * >>> will be freed at the tail end of the server stub code.
931 afs_stats_cmperf.numPerfCalls++;
933 dataBytes = sizeof(afs_stats_cmperf);
934 dataBuffP = (afs_int32 *) afs_osi_Alloc(dataBytes);
935 memcpy((char *)dataBuffP, (char *)&afs_stats_cmperf, dataBytes);
936 a_dataP->AFSCB_CollData_len = dataBytes >> 2;
937 a_dataP->AFSCB_CollData_val = dataBuffP;
940 case AFSCB_XSTATSCOLL_FULL_PERF_INFO:
942 * Pass back the full range of performance and statistical
943 * data available. We have to bring the normal performance
944 * data collection up to date, then copy that data into
945 * the full collection.
947 * >>> We are forced to allocate a separate area in which to
948 * >>> put this stuff in by the RPC stub generator, since it
949 * >>> will be freed at the tail end of the server stub code.
951 afs_stats_cmperf.numPerfCalls++;
953 memcpy((char *)(&(afs_stats_cmfullperf.perf)),
954 (char *)(&afs_stats_cmperf), sizeof(struct afs_stats_CMPerf));
955 afs_stats_cmfullperf.numFullPerfCalls++;
957 dataBytes = sizeof(afs_stats_cmfullperf);
958 dataBuffP = (afs_int32 *) afs_osi_Alloc(dataBytes);
959 memcpy((char *)dataBuffP, (char *)(&afs_stats_cmfullperf), dataBytes);
960 a_dataP->AFSCB_CollData_len = dataBytes >> 2;
961 a_dataP->AFSCB_CollData_val = dataBuffP;
966 * Illegal collection number.
968 a_dataP->AFSCB_CollData_len = 0;
969 a_dataP->AFSCB_CollData_val = NULL;
971 } /*Switch on collection number */
972 #endif /* AFS_NOSTATS */
980 } /*SRXAFSCB_GetXStats */
983 /*------------------------------------------------------------------------
984 * EXPORTED afs_RXCallBackServer
987 * Body of the thread supporting callback services.
996 * Nothing interesting.
1000 *------------------------------------------------------------------------*/
1003 afs_RXCallBackServer(void)
1005 AFS_STATCNT(afs_RXCallBackServer);
1010 afs_osi_Sleep(&afs_server);
1014 * Donate this process to Rx.
1016 rx_ServerProc(NULL);
1019 } /*afs_RXCallBackServer */
1022 /*------------------------------------------------------------------------
1023 * EXPORTED shutdown_CB
1026 * Zero out important Cache Manager data structures.
1035 * Nothing interesting.
1039 *------------------------------------------------------------------------*/
1044 AFS_STATCNT(shutdown_CB);
1046 if (afs_cold_shutdown) {
1047 afs_oddCBs = afs_evenCBs = afs_allCBs = afs_allZaps = afs_oddZaps =
1048 afs_evenZaps = afs_connectBacks = 0;
1055 /*------------------------------------------------------------------------
1056 * EXPORTED SRXAFSCB_InitCallBackState2
1059 * This routine was used in the AFS 3.5 beta release, but not anymore.
1060 * It has since been replaced by SRXAFSCB_InitCallBackState3.
1063 * a_call : Ptr to Rx call on which this request came in.
1066 * RXGEN_OPCODE (always).
1069 * Nothing interesting.
1073 *------------------------------------------------------------------------*/
1076 SRXAFSCB_InitCallBackState2(struct rx_call *a_call,
1077 struct interfaceAddr *addr)
1079 return RXGEN_OPCODE;
1082 /*------------------------------------------------------------------------
1083 * EXPORTED SRXAFSCB_WhoAreYou
1086 * Routine called by the server-side callback RPC interface to
1087 * obtain a unique identifier for the client. The server uses
1088 * this identifier to figure out whether or not two RX connections
1089 * are from the same client, and to find out which addresses go
1090 * with which clients.
1093 * a_call : Ptr to Rx call on which this request came in.
1094 * addr: Ptr to return the list of interfaces for this client.
1100 * Nothing interesting.
1104 *------------------------------------------------------------------------*/
1107 SRXAFSCB_WhoAreYou(struct rx_call *a_call, struct interfaceAddr *addr)
1114 AFS_STATCNT(SRXAFSCB_WhoAreYou);
1116 memset(addr, 0, sizeof(*addr));
1118 ObtainReadLock(&afs_xinterface);
1120 /* return all network interface addresses */
1121 addr->numberOfInterfaces = afs_cb_interface.numberOfInterfaces;
1122 addr->uuid = afs_cb_interface.uuid;
1123 for (i = 0; i < afs_cb_interface.numberOfInterfaces; i++) {
1124 addr->addr_in[i] = ntohl(afs_cb_interface.addr_in[i]);
1125 addr->subnetmask[i] = ntohl(afs_cb_interface.subnetmask[i]);
1126 addr->mtu[i] = ntohl(afs_cb_interface.mtu[i]);
1129 ReleaseReadLock(&afs_xinterface);
1137 /*------------------------------------------------------------------------
1138 * EXPORTED SRXAFSCB_InitCallBackState3
1141 * Routine called by the server-side callback RPC interface to
1142 * implement clearing all callbacks from this host.
1145 * a_call : Ptr to Rx call on which this request came in.
1151 * Nothing interesting.
1155 *------------------------------------------------------------------------*/
1158 SRXAFSCB_InitCallBackState3(struct rx_call *a_call, afsUUID * a_uuid)
1163 * TBD: Lookup the server by the UUID instead of its IP address.
1165 code = SRXAFSCB_InitCallBackState(a_call);
1171 /*------------------------------------------------------------------------
1172 * EXPORTED SRXAFSCB_ProbeUuid
1175 * Routine called by the server-side callback RPC interface to
1176 * implement ``probing'' the Cache Manager, just making sure it's
1177 * still there is still the same client it used to be.
1180 * a_call : Ptr to Rx call on which this request came in.
1181 * a_uuid : Ptr to UUID that must match the client's UUID.
1184 * 0 if a_uuid matches the UUID for this client
1185 * Non-zero otherwize
1188 * Nothing interesting.
1192 *------------------------------------------------------------------------*/
1195 SRXAFSCB_ProbeUuid(struct rx_call *a_call, afsUUID * a_uuid)
1201 AFS_STATCNT(SRXAFSCB_Probe);
1203 XSTATS_START_CMTIME(AFS_STATS_CM_RPCIDX_PROBE);
1204 if (!afs_uuid_equal(a_uuid, &afs_cb_interface.uuid))
1205 code = 1; /* failure */
1214 /*------------------------------------------------------------------------
1215 * EXPORTED SRXAFSCB_GetServerPrefs
1218 * Routine to list server preferences used by this client.
1221 * a_call : Ptr to Rx call on which this request came in.
1222 * a_index : Input server index
1223 * a_srvr_addr : Output server address in host byte order
1224 * (0xffffffff on last server)
1225 * a_srvr_rank : Output server rank
1231 * Nothing interesting.
1235 *------------------------------------------------------------------------*/
1238 SRXAFSCB_GetServerPrefs(struct rx_call *a_call, afs_int32 a_index,
1239 afs_int32 * a_srvr_addr, afs_int32 * a_srvr_rank)
1245 AFS_STATCNT(SRXAFSCB_GetServerPrefs);
1247 ObtainReadLock(&afs_xserver);
1249 /* Search the hash table for the server with this index */
1250 *a_srvr_addr = 0xffffffff;
1251 *a_srvr_rank = 0xffffffff;
1252 for (i = 0, j = 0; j < NSERVERS && i <= a_index; j++) {
1253 for (sa = afs_srvAddrs[j]; sa && i <= a_index; sa = sa->next_bkt, i++) {
1255 *a_srvr_addr = ntohl(sa->sa_ip);
1256 *a_srvr_rank = sa->sa_iprank;
1261 ReleaseReadLock(&afs_xserver);
1269 /*------------------------------------------------------------------------
1270 * EXPORTED SRXAFSCB_GetCellServDB
1273 * Routine to list cells configured for this client
1276 * a_call : Ptr to Rx call on which this request came in.
1277 * a_index : Input cell index
1278 * a_name : Output cell name ("" on last cell)
1279 * a_hosts : Output cell database servers in host byte order.
1285 * Nothing interesting.
1289 *------------------------------------------------------------------------*/
1292 SRXAFSCB_GetCellServDB(struct rx_call *a_call, afs_int32 a_index,
1293 char **a_name, serverList * a_hosts)
1297 char *t_name, *p_name = NULL;
1300 AFS_STATCNT(SRXAFSCB_GetCellServDB);
1302 tcell = afs_GetCellByIndex(a_index, READ_LOCK);
1306 a_hosts->serverList_val = 0;
1307 a_hosts->serverList_len = 0;
1309 p_name = tcell->cellName;
1310 for (j = 0; j < AFSMAXCELLHOSTS && tcell->cellHosts[j]; j++);
1312 a_hosts->serverList_val =
1313 (afs_int32 *) afs_osi_Alloc(j * sizeof(afs_int32));
1314 a_hosts->serverList_len = j;
1315 for (j = 0; j < AFSMAXCELLHOSTS && tcell->cellHosts[j]; j++)
1316 a_hosts->serverList_val[j] =
1317 ntohl(tcell->cellHosts[j]->addr->sa_ip);
1318 afs_PutCell(tcell, READ_LOCK);
1321 t_name = (char *)afs_osi_Alloc(i + 1);
1322 if (t_name == NULL) {
1323 afs_osi_Free(a_hosts->serverList_val, (j * sizeof(afs_int32)));
1330 memcpy(t_name, p_name, i);
1339 /*------------------------------------------------------------------------
1340 * EXPORTED SRXAFSCB_GetLocalCell
1343 * Routine to return name of client's local cell
1346 * a_call : Ptr to Rx call on which this request came in.
1347 * a_name : Output cell name
1353 * Nothing interesting.
1357 *------------------------------------------------------------------------*/
1360 SRXAFSCB_GetLocalCell(struct rx_call *a_call, char **a_name)
1364 char *t_name, *p_name = NULL;
1367 AFS_STATCNT(SRXAFSCB_GetLocalCell);
1369 /* Search the list for the primary cell. Cell number 1 is only
1370 * the primary cell is when no other cell is explicitly marked as
1371 * the primary cell. */
1372 tcell = afs_GetPrimaryCell(READ_LOCK);
1374 p_name = tcell->cellName;
1376 plen = strlen(p_name);
1379 t_name = (char *)afs_osi_Alloc(plen + 1);
1380 if (t_name == NULL) {
1382 afs_PutCell(tcell, READ_LOCK);
1387 t_name[plen] = '\0';
1389 memcpy(t_name, p_name, plen);
1395 afs_PutCell(tcell, READ_LOCK);
1401 * afs_MarshallCacheConfig - marshall client cache configuration
1405 * IN callerVersion - the rpc stat version of the caller.
1407 * IN config - client cache configuration.
1409 * OUT ptr - buffer where configuration is marshalled.
1416 afs_MarshallCacheConfig(afs_uint32 callerVersion, cm_initparams_v1 * config,
1419 AFS_STATCNT(afs_MarshallCacheConfig);
1421 * We currently only support version 1.
1423 *(ptr++) = config->nChunkFiles;
1424 *(ptr++) = config->nStatCaches;
1425 *(ptr++) = config->nDataCaches;
1426 *(ptr++) = config->nVolumeCaches;
1427 *(ptr++) = config->firstChunkSize;
1428 *(ptr++) = config->otherChunkSize;
1429 *(ptr++) = config->cacheSize;
1430 *(ptr++) = config->setTime;
1431 *(ptr++) = config->memCache;
1435 /*------------------------------------------------------------------------
1436 * EXPORTED SRXAFSCB_GetCacheConfig
1439 * Routine to return parameters used to initialize client cache.
1440 * Client may request any format version. Server may not return
1441 * format version greater than version requested by client.
1444 * a_call: Ptr to Rx call on which this request came in.
1445 * callerVersion: Data format version desired by the client.
1446 * serverVersion: Data format version of output data.
1447 * configCount: Number bytes allocated for output data.
1448 * config: Client cache configuration.
1454 * Nothing interesting.
1458 *------------------------------------------------------------------------*/
1461 SRXAFSCB_GetCacheConfig(struct rx_call *a_call, afs_uint32 callerVersion,
1462 afs_uint32 * serverVersion, afs_uint32 * configCount,
1463 cacheConfig * config)
1465 afs_uint32 *t_config;
1467 cm_initparams_v1 cm_config;
1470 AFS_STATCNT(SRXAFSCB_GetCacheConfig);
1473 * Currently only support version 1
1475 allocsize = sizeof(cm_initparams_v1);
1476 t_config = (afs_uint32 *) afs_osi_Alloc(allocsize);
1477 if (t_config == NULL) {
1482 cm_config.nChunkFiles = cm_initParams.cmi_nChunkFiles;
1483 cm_config.nStatCaches = cm_initParams.cmi_nStatCaches;
1484 cm_config.nDataCaches = cm_initParams.cmi_nDataCaches;
1485 cm_config.nVolumeCaches = cm_initParams.cmi_nVolumeCaches;
1486 cm_config.firstChunkSize = cm_initParams.cmi_firstChunkSize;
1487 cm_config.otherChunkSize = cm_initParams.cmi_otherChunkSize;
1488 cm_config.cacheSize = cm_initParams.cmi_cacheSize;
1489 cm_config.setTime = cm_initParams.cmi_setTime;
1490 cm_config.memCache = cm_initParams.cmi_memCache;
1492 afs_MarshallCacheConfig(callerVersion, &cm_config, t_config);
1494 *serverVersion = AFS_CLIENT_RETRIEVAL_FIRST_EDITION;
1495 *configCount = allocsize;
1496 config->cacheConfig_val = t_config;
1497 config->cacheConfig_len = allocsize / sizeof(afs_uint32);
1504 /*------------------------------------------------------------------------
1505 * EXPORTED SRXAFSCB_FetchData
1508 * Routine to do third party move from a remioserver to the original
1509 * issuer of an ArchiveData request. Presently supported only by the
1510 * "fs" command, not by the AFS client.
1513 * rxcall: Ptr to Rx call on which this request came in.
1514 * Fid: pointer to AFSFid structure.
1515 * Fd: File descriptor inside fs command.
1516 * Position: Offset in the file.
1517 * Length: Data length to transfer.
1518 * TotalLength: Pointer to total file length field
1524 * Nothing interesting.
1527 *------------------------------------------------------------------------*/
1529 SRXAFSCB_FetchData(struct rx_call *rxcall, struct AFSFid *Fid, afs_int32 Fd,
1530 afs_int64 Position, afs_int64 Length,
1531 afs_int64 * TotalLength)
1536 /*------------------------------------------------------------------------
1537 * EXPORTED SRXAFSCB_StoreData
1540 * Routine to do third party move from a remioserver to the original
1541 * issuer of a RetrieveData request. Presently supported only by the
1542 * "fs" command, not by the AFS client.
1545 * rxcall: Ptr to Rx call on which this request came in.
1546 * Fid: pointer to AFSFid structure.
1547 * Fd: File descriptor inside fs command.
1548 * Position: Offset in the file.
1549 * Length: Data length to transfer.
1550 * TotalLength: Pointer to total file length field
1556 * Nothing interesting.
1560 *------------------------------------------------------------------------*/
1562 SRXAFSCB_StoreData(struct rx_call *rxcall, struct AFSFid *Fid, afs_int32 Fd,
1563 afs_int64 Position, afs_int64 Length,
1564 afs_int64 * TotalLength)
1569 /*------------------------------------------------------------------------
1570 * EXPORTED SRXAFSCB_GetCellByNum
1573 * Routine to get information about a cell specified by its
1574 * cell number (returned by GetCE/GetCE64).
1577 * a_call : Ptr to Rx call on which this request came in.
1578 * a_cellnum : Input cell number
1579 * a_name : Output cell name (one zero byte when no such cell).
1580 * a_hosts : Output cell database servers in host byte order.
1586 * Nothing interesting.
1590 *------------------------------------------------------------------------*/
1593 SRXAFSCB_GetCellByNum(struct rx_call *a_call, afs_int32 a_cellnum,
1594 char **a_name, serverList * a_hosts)
1600 AFS_STATCNT(SRXAFSCB_GetCellByNum);
1602 a_hosts->serverList_val = 0;
1603 a_hosts->serverList_len = 0;
1605 tcell = afs_GetCellStale(a_cellnum, READ_LOCK);
1607 *a_name = afs_strdup("");
1612 ObtainReadLock(&tcell->lock);
1613 *a_name = afs_strdup(tcell->cellName);
1615 for (sn = 0; sn < AFSMAXCELLHOSTS && tcell->cellHosts[sn]; sn++);
1616 a_hosts->serverList_len = sn;
1617 a_hosts->serverList_val =
1618 (afs_int32 *) afs_osi_Alloc(sn * sizeof(afs_int32));
1620 for (i = 0; i < sn; i++)
1621 a_hosts->serverList_val[i] = ntohl(tcell->cellHosts[i]->addr->sa_ip);
1622 ReleaseReadLock(&tcell->lock);
1623 afs_PutCell(tcell, READ_LOCK);
1630 SRXAFSCB_TellMeAboutYourself(struct rx_call *a_call,
1631 struct interfaceAddr *addr,
1632 Capabilities * capabilities)
1636 afs_int32 *dataBuffP;
1637 afs_int32 dataBytes;
1641 AFS_STATCNT(SRXAFSCB_WhoAreYou);
1643 ObtainReadLock(&afs_xinterface);
1645 /* return all network interface addresses */
1646 addr->numberOfInterfaces = afs_cb_interface.numberOfInterfaces;
1647 addr->uuid = afs_cb_interface.uuid;
1648 for (i = 0; i < afs_cb_interface.numberOfInterfaces; i++) {
1649 addr->addr_in[i] = ntohl(afs_cb_interface.addr_in[i]);
1650 addr->subnetmask[i] = ntohl(afs_cb_interface.subnetmask[i]);
1651 addr->mtu[i] = ntohl(afs_cb_interface.mtu[i]);
1654 ReleaseReadLock(&afs_xinterface);
1658 dataBytes = 1 * sizeof(afs_int32);
1659 dataBuffP = (afs_int32 *) afs_osi_Alloc(dataBytes);
1660 dataBuffP[0] = CLIENT_CAPABILITY_ERRORTRANS;
1661 capabilities->Capabilities_len = dataBytes / sizeof(afs_int32);
1662 capabilities->Capabilities_val = dataBuffP;
1668 #if 0 && defined(AFS_LINUX24_ENV)
1669 extern struct vcache *afs_globalVp;
1671 int recurse_dcache_parent(parent, a_index, addr, inode, flags, time, fileName)
1672 struct dentry * parent;
1680 struct dentry *this_parent = parent;
1681 struct list_head *next;
1683 struct dentry *dentry;
1686 next = this_parent->d_subdirs.next;
1688 while (next != &this_parent->d_subdirs) {
1689 struct list_head *tmp = next;
1690 dentry = list_entry(tmp, struct dentry, d_child);
1696 * Descend a level if the d_subdirs list is non-empty.
1698 if (!list_empty(&dentry->d_subdirs)) {
1699 this_parent = dentry;
1704 * All done at this level ... ascend and resume the search.
1706 if (this_parent != parent) {
1707 next = this_parent->d_child.next;
1708 this_parent = this_parent->d_parent;
1714 if (d_unhashed(dentry))
1719 *fileName = afs_strdup(dentry->d_name.name?dentry->d_name.name:"");
1720 *inode = ITOAFS(dentry->d_inode);
1721 *addr = atomic_read(&(dentry)->d_count);
1722 *time = dentry->d_time;
1730 int SRXAFSCB_GetDE(a_call, a_index, addr, inode, flags, time, fileName)
1731 struct rx_call *a_call;
1738 { /*SRXAFSCB_GetDE*/
1739 int code = 0; /*Return code*/
1740 #if 0 && defined(AFS_LINUX24_ENV)
1741 register int i; /*Loop variable*/
1742 register struct vcache *tvc = afs_globalVp;
1743 struct dentry *dentry;
1744 struct list_head *cur, *head = &(AFSTOI(tvc))->i_dentry;
1746 #ifdef RX_ENABLE_LOCKS
1748 #endif /* RX_ENABLE_LOCKS */
1750 #if defined(AFS_LINUX24_ENV)
1751 spin_lock(&dcache_lock);
1755 while ((cur = cur->next) != head) {
1756 dentry = list_entry(cur, struct dentry, d_alias);
1758 dget_locked(dentry);
1760 #if defined(AFS_LINUX24_ENV)
1761 spin_unlock(&dcache_lock);
1767 if (recurse_dcache_parent(dentry, a_index, addr, inode, flags, time, fileName) == 0) {
1778 *fileName = afs_strdup("");
1782 if (d_unhashed(dentry))
1787 *fileName = afs_strdup(dentry->d_name.name?dentry->d_name.name:"");
1788 *inode = ITOAFS(dentry->d_inode);
1789 *addr = atomic_read(&(dentry)->d_count);
1790 *time = dentry->d_time;
1797 #ifdef RX_ENABLE_LOCKS
1799 #endif /* RX_ENABLE_LOCKS */
1803 } /*SRXAFSCB_GetDE*/