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},
66 { "afs_discon_lock", (char *)&afs_discon_lock},
67 { "afs_disconDirtyLock", (char *)&afs_disconDirtyLock},
68 { "afs_discon_vc_dirty", (char *)&afs_xvcdirty},
71 unsigned long lastCallBack_vnode;
72 unsigned int lastCallBack_dv;
73 osi_timeval_t lastCallBack_time;
75 /* these are for storing alternate interface addresses */
76 struct interfaceAddr afs_cb_interface;
78 /*------------------------------------------------------------------------
79 * EXPORTED SRXAFSCB_GetCE
82 * Routine called by the server-side callback RPC interface to
83 * implement pulling out the contents of the i'th cache entry.
86 * a_call : Ptr to Rx call on which this request came in.
87 * a_index : Index of desired cache entry.
88 * a_result : Ptr to a buffer for the given cache entry.
91 * 0 if everything went fine,
92 * 1 if we were given a bad index.
95 * Nothing interesting.
99 *------------------------------------------------------------------------*/
102 SRXAFSCB_GetCE(struct rx_call *a_call, afs_int32 a_index,
103 struct AFSDBCacheEntry *a_result)
106 register int i; /*Loop variable */
107 register struct vcache *tvc; /*Ptr to current cache entry */
108 int code; /*Return code */
113 XSTATS_START_CMTIME(AFS_STATS_CM_RPCIDX_GETCE);
115 AFS_STATCNT(SRXAFSCB_GetCE);
116 for (i = 0; i < VCSIZE; i++) {
117 for (tvc = afs_vhashT[i]; tvc; tvc = tvc->hnext) {
121 } /*Zip through current hash chain */
122 } /*Zip through hash chains */
132 * Copy out the located entry.
134 a_result->addr = afs_data_pointer_to_int32(tvc);
135 a_result->cell = tvc->f.fid.Cell;
136 a_result->netFid.Volume = tvc->f.fid.Fid.Volume;
137 a_result->netFid.Vnode = tvc->f.fid.Fid.Vnode;
138 a_result->netFid.Unique = tvc->f.fid.Fid.Unique;
139 a_result->lock.waitStates = tvc->lock.wait_states;
140 a_result->lock.exclLocked = tvc->lock.excl_locked;
141 a_result->lock.readersReading = tvc->lock.readers_reading;
142 a_result->lock.numWaiting = tvc->lock.num_waiting;
143 #if defined(INSTRUMENT_LOCKS)
144 a_result->lock.pid_last_reader = MyPidxx2Pid(tvc->lock.pid_last_reader);
145 a_result->lock.pid_writer = MyPidxx2Pid(tvc->lock.pid_writer);
146 a_result->lock.src_indicator = tvc->lock.src_indicator;
148 /* On osf20 , the vcache does not maintain these three fields */
149 a_result->lock.pid_last_reader = 0;
150 a_result->lock.pid_writer = 0;
151 a_result->lock.src_indicator = 0;
152 #endif /* INSTRUMENT_LOCKS */
153 #ifdef AFS_64BIT_CLIENT
154 a_result->Length = (afs_int32) tvc->f.m.Length & 0xffffffff;
155 #else /* AFS_64BIT_CLIENT */
156 a_result->Length = tvc->f.m.Length;
157 #endif /* AFS_64BIT_CLIENT */
158 a_result->DataVersion = hgetlo(tvc->f.m.DataVersion);
159 a_result->callback = afs_data_pointer_to_int32(tvc->callback); /* XXXX Now a pointer; change it XXXX */
160 a_result->cbExpires = tvc->cbExpires;
161 if (tvc->f.states & CVInit) {
162 a_result->refCount = 1;
164 #ifdef AFS_DARWIN80_ENV
165 a_result->refCount = vnode_isinuse(AFSTOV(tvc),0)?1:0; /* XXX fix */
167 a_result->refCount = VREFCOUNT(tvc);
170 a_result->opens = tvc->opens;
171 a_result->writers = tvc->execsOrWriters;
172 a_result->mvstat = tvc->mvstat;
173 a_result->states = tvc->f.states;
177 * Return our results.
186 } /*SRXAFSCB_GetCE */
189 SRXAFSCB_GetCE64(struct rx_call *a_call, afs_int32 a_index,
190 struct AFSDBCacheEntry64 *a_result)
192 register int i; /*Loop variable */
193 register struct vcache *tvc; /*Ptr to current cache entry */
194 int code; /*Return code */
199 XSTATS_START_CMTIME(AFS_STATS_CM_RPCIDX_GETCE);
201 AFS_STATCNT(SRXAFSCB_GetCE64);
202 for (i = 0; i < VCSIZE; i++) {
203 for (tvc = afs_vhashT[i]; tvc; tvc = tvc->hnext) {
207 } /*Zip through current hash chain */
208 } /*Zip through hash chains */
218 * Copy out the located entry.
220 a_result->addr = afs_data_pointer_to_int32(tvc);
221 a_result->cell = tvc->f.fid.Cell;
222 a_result->netFid.Volume = tvc->f.fid.Fid.Volume;
223 a_result->netFid.Vnode = tvc->f.fid.Fid.Vnode;
224 a_result->netFid.Unique = tvc->f.fid.Fid.Unique;
225 a_result->lock.waitStates = tvc->lock.wait_states;
226 a_result->lock.exclLocked = tvc->lock.excl_locked;
227 a_result->lock.readersReading = tvc->lock.readers_reading;
228 a_result->lock.numWaiting = tvc->lock.num_waiting;
229 #if defined(INSTRUMENT_LOCKS)
230 a_result->lock.pid_last_reader = MyPidxx2Pid(tvc->lock.pid_last_reader);
231 a_result->lock.pid_writer = MyPidxx2Pid(tvc->lock.pid_writer);
232 a_result->lock.src_indicator = tvc->lock.src_indicator;
234 /* On osf20 , the vcache does not maintain these three fields */
235 a_result->lock.pid_last_reader = 0;
236 a_result->lock.pid_writer = 0;
237 a_result->lock.src_indicator = 0;
238 #endif /* INSTRUMENT_LOCKS */
239 #if !defined(AFS_64BIT_ENV)
240 a_result->Length.high = 0;
241 a_result->Length.low = tvc->f.m.Length;
243 a_result->Length = tvc->f.m.Length;
245 a_result->DataVersion = hgetlo(tvc->f.m.DataVersion);
246 a_result->callback = afs_data_pointer_to_int32(tvc->callback); /* XXXX Now a pointer; change it XXXX */
247 a_result->cbExpires = tvc->cbExpires;
248 if (tvc->f.states & CVInit) {
249 a_result->refCount = 1;
251 #ifdef AFS_DARWIN80_ENV
252 a_result->refCount = vnode_isinuse(AFSTOV(tvc),0)?1:0; /* XXX fix */
254 a_result->refCount = VREFCOUNT(tvc);
257 a_result->opens = tvc->opens;
258 a_result->writers = tvc->execsOrWriters;
259 a_result->mvstat = tvc->mvstat;
260 a_result->states = tvc->f.states;
264 * Return our results.
273 } /*SRXAFSCB_GetCE64 */
276 /*------------------------------------------------------------------------
277 * EXPORTED SRXAFSCB_GetLock
280 * Routine called by the server-side callback RPC interface to
281 * implement pulling out the contents of a lock in the lock
285 * a_call : Ptr to Rx call on which this request came in.
286 * a_index : Index of desired lock.
287 * a_result : Ptr to a buffer for the given lock.
290 * 0 if everything went fine,
291 * 1 if we were given a bad index.
294 * Nothing interesting.
298 *------------------------------------------------------------------------*/
301 SRXAFSCB_GetLock(struct rx_call *a_call, afs_int32 a_index,
302 struct AFSDBLock *a_result)
304 struct ltable *tl; /*Ptr to lock table entry */
305 int nentries; /*Num entries in table */
306 int code; /*Return code */
311 XSTATS_START_CMTIME(AFS_STATS_CM_RPCIDX_GETLOCK);
313 AFS_STATCNT(SRXAFSCB_GetLock);
314 nentries = sizeof(ltable) / sizeof(struct ltable);
315 if (a_index < 0 || a_index >= nentries+afs_cellindex) {
320 } else if (a_index >= nentries) {
321 struct cell *tc = afs_GetCellByIndex(a_index-nentries, 0);
322 strcpy(a_result->name, tc->cellName);
323 a_result->lock.waitStates =
324 ((struct afs_lock *)&(tc->lock))->wait_states;
325 a_result->lock.exclLocked =
326 ((struct afs_lock *)&(tc->lock))->excl_locked;
327 a_result->lock.readersReading =
328 ((struct afs_lock *)&(tc->lock))->readers_reading;
329 a_result->lock.numWaiting =
330 ((struct afs_lock *)&(tc->lock))->num_waiting;
331 #ifdef INSTRUMENT_LOCKS
332 a_result->lock.pid_last_reader =
333 MyPidxx2Pid(((struct afs_lock *)&(tc->lock))->pid_last_reader);
334 a_result->lock.pid_writer =
335 MyPidxx2Pid(((struct afs_lock *)&(tc->lock))->pid_writer);
336 a_result->lock.src_indicator =
337 ((struct afs_lock *)&(tc->lock))->src_indicator;
339 a_result->lock.pid_last_reader = 0;
340 a_result->lock.pid_writer = 0;
341 a_result->lock.src_indicator = 0;
346 * Found it - copy out its contents.
348 tl = <able[a_index];
349 strcpy(a_result->name, tl->name);
350 a_result->lock.waitStates =
351 ((struct afs_lock *)(tl->addr))->wait_states;
352 a_result->lock.exclLocked =
353 ((struct afs_lock *)(tl->addr))->excl_locked;
354 a_result->lock.readersReading =
355 ((struct afs_lock *)(tl->addr))->readers_reading;
356 a_result->lock.numWaiting =
357 ((struct afs_lock *)(tl->addr))->num_waiting;
358 #ifdef INSTRUMENT_LOCKS
359 a_result->lock.pid_last_reader =
360 MyPidxx2Pid(((struct afs_lock *)(tl->addr))->pid_last_reader);
361 a_result->lock.pid_writer =
362 MyPidxx2Pid(((struct afs_lock *)(tl->addr))->pid_writer);
363 a_result->lock.src_indicator =
364 ((struct afs_lock *)(tl->addr))->src_indicator;
366 a_result->lock.pid_last_reader = 0;
367 a_result->lock.pid_writer = 0;
368 a_result->lock.src_indicator = 0;
379 } /*SRXAFSCB_GetLock */
382 /*------------------------------------------------------------------------
383 * static ClearCallBack
386 * Clear out callback information for the specified file, or
387 * even a whole volume. Used to worry about callback was from
388 * within the particular cell or not. Now we don't bother with
389 * that anymore; it's not worth the time.
392 * a_conn : Ptr to Rx connection involved.
393 * a_fid : Ptr to AFS fid being cleared.
399 * Nothing interesting.
404 Appears to need to be called with GLOCK held, as the icl_Event4 stuff asserts otherwise
406 *------------------------------------------------------------------------*/
409 ClearCallBack(register struct rx_connection *a_conn,
410 register struct AFSFid *a_fid)
412 register struct vcache *tvc;
414 struct VenusFid localFid;
416 #ifdef AFS_DARWIN80_ENV
420 AFS_STATCNT(ClearCallBack);
425 * XXXX Don't hold any server locks here because of callback protocol XXX
428 localFid.Fid.Volume = a_fid->Volume;
429 localFid.Fid.Vnode = a_fid->Vnode;
430 localFid.Fid.Unique = a_fid->Unique;
433 * Volume ID of zero means don't do anything.
435 if (a_fid->Volume != 0) {
436 if (a_fid->Vnode == 0) {
437 struct afs_q *tq, *uq;
439 * Clear callback for the whole volume. Zip through the
440 * hash chain, nullifying entries whose volume ID matches.
443 ObtainReadLock(&afs_xvcache);
444 i = VCHashV(&localFid);
445 for (tq = afs_vhashTV[i].prev; tq != &afs_vhashTV[i]; tq = uq) {
448 if (tvc->f.fid.Fid.Volume == a_fid->Volume) {
449 tvc->callback = NULL;
451 localFid.Cell = tvc->f.fid.Cell;
452 tvc->dchint = NULL; /* invalidate hints */
453 if (tvc->f.states & CVInit) {
454 ReleaseReadLock(&afs_xvcache);
455 afs_osi_Sleep(&tvc->f.states);
458 #if defined(AFS_SGI_ENV) || defined(AFS_SUN5_ENV) || defined(AFS_HPUX_ENV) || defined(AFS_LINUX20_ENV)
459 VN_HOLD(AFSTOV(tvc));
461 #ifdef AFS_DARWIN80_ENV
462 if (tvc->f.states & CDeadVnode) {
463 if (!(tvc->f.states & CBulkFetching)) {
464 ReleaseReadLock(&afs_xvcache);
465 afs_osi_Sleep(&tvc->f.states);
478 if (tvc->f.states & (CBulkFetching|CDeadVnode)) {
480 vnode_recycle(AFSTOV(tvc));
487 ReleaseReadLock(&afs_xvcache);
488 ObtainWriteLock(&afs_xcbhash, 449);
489 afs_DequeueCallback(tvc);
490 tvc->f.states &= ~(CStatd | CUnique | CBulkFetching);
492 if (tvc->f.fid.Fid.Vnode & 1)
496 ReleaseWriteLock(&afs_xcbhash);
497 if ((tvc->f.fid.Fid.Vnode & 1 || (vType(tvc) == VDIR)))
498 osi_dnlc_purgedp(tvc);
499 afs_Trace3(afs_iclSetp, CM_TRACE_CALLBACK,
500 ICL_TYPE_POINTER, tvc, ICL_TYPE_INT32,
501 tvc->f.states, ICL_TYPE_INT32,
503 #ifdef AFS_DARWIN80_ENV
504 vnode_put(AFSTOV(tvc));
506 ObtainReadLock(&afs_xvcache);
509 } else if ((tvc->f.states & CMValid)
510 && (tvc->mvid->Fid.Volume == a_fid->Volume)) {
511 tvc->f.states &= ~CMValid;
513 localFid.Cell = tvc->mvid->Cell;
516 ReleaseReadLock(&afs_xvcache);
519 * XXXX Don't hold any locks here XXXX
521 tv = afs_FindVolume(&localFid, 0);
523 afs_ResetVolumeInfo(tv);
524 afs_PutVolume(tv, 0);
525 /* invalidate mtpoint? */
527 } /*Clear callbacks for whole volume */
530 * Clear callbacks just for the one file.
534 if (a_fid->Vnode & 1)
535 afs_oddCBs++; /*Could do this on volume basis, too */
537 afs_evenCBs++; /*A particular fid was specified */
539 ObtainReadLock(&afs_xvcache);
540 i = VCHash(&localFid);
541 for (tvc = afs_vhashT[i]; tvc; tvc = uvc) {
543 if (tvc->f.fid.Fid.Vnode == a_fid->Vnode
544 && tvc->f.fid.Fid.Volume == a_fid->Volume
545 && tvc->f.fid.Fid.Unique == a_fid->Unique) {
546 tvc->callback = NULL;
547 tvc->dchint = NULL; /* invalidate hints */
548 if (tvc->f.states & CVInit) {
549 ReleaseReadLock(&afs_xvcache);
550 afs_osi_Sleep(&tvc->f.states);
553 #if defined(AFS_SGI_ENV) || defined(AFS_SUN5_ENV) || defined(AFS_HPUX_ENV) || defined(AFS_LINUX20_ENV)
554 VN_HOLD(AFSTOV(tvc));
556 #ifdef AFS_DARWIN80_ENV
557 if (tvc->f.states & CDeadVnode) {
558 if (!(tvc->f.states & CBulkFetching)) {
559 ReleaseReadLock(&afs_xvcache);
560 afs_osi_Sleep(&tvc->f.states);
573 if (tvc->f.states & (CBulkFetching|CDeadVnode)) {
575 vnode_recycle(AFSTOV(tvc));
582 ReleaseReadLock(&afs_xvcache);
583 ObtainWriteLock(&afs_xcbhash, 450);
584 afs_DequeueCallback(tvc);
585 tvc->f.states &= ~(CStatd | CUnique | CBulkFetching);
586 ReleaseWriteLock(&afs_xcbhash);
587 if ((tvc->f.fid.Fid.Vnode & 1 || (vType(tvc) == VDIR)))
588 osi_dnlc_purgedp(tvc);
589 afs_Trace3(afs_iclSetp, CM_TRACE_CALLBACK,
590 ICL_TYPE_POINTER, tvc, ICL_TYPE_INT32,
591 tvc->f.states, ICL_TYPE_LONG, 0);
593 lastCallBack_vnode = afid->Vnode;
594 lastCallBack_dv = tvc->mstat.DataVersion.low;
595 osi_GetuTime(&lastCallBack_time);
597 #ifdef AFS_DARWIN80_ENV
598 vnode_put(AFSTOV(tvc));
600 ObtainReadLock(&afs_xvcache);
604 } /*Walk through hash table */
605 ReleaseReadLock(&afs_xvcache);
606 } /*Clear callbacks for one file */
609 /*Fid has non-zero volume ID */
611 * Always return a predictable value.
618 /*------------------------------------------------------------------------
619 * EXPORTED SRXAFSCB_CallBack
622 * Routine called by the server-side callback RPC interface to
623 * implement passing in callback information.
627 * a_call : Ptr to Rx call on which this request came in.
628 * a_fids : Ptr to array of fids involved.
629 * a_callbacks : Ptr to matching callback info for the fids.
635 * Nothing interesting.
639 *------------------------------------------------------------------------*/
642 SRXAFSCB_CallBack(struct rx_call *a_call, register struct AFSCBFids *a_fids,
643 struct AFSCBs *a_callbacks)
645 register int i; /*Loop variable */
646 struct AFSFid *tfid; /*Ptr to current fid */
647 register struct rx_connection *tconn; /*Call's connection */
653 XSTATS_START_CMTIME(AFS_STATS_CM_RPCIDX_CALLBACK);
655 AFS_STATCNT(SRXAFSCB_CallBack);
656 if (!(tconn = rx_ConnectionOf(a_call)))
658 tfid = (struct AFSFid *)a_fids->AFSCBFids_val;
661 * For now, we ignore callbacks, since the File Server only *breaks*
662 * callbacks at present.
664 for (i = 0; i < a_fids->AFSCBFids_len; i++)
665 ClearCallBack(tconn, &tfid[i]);
673 } /*SRXAFSCB_CallBack */
676 /*------------------------------------------------------------------------
677 * EXPORTED SRXAFSCB_Probe
680 * Routine called by the server-side callback RPC interface to
681 * implement ``probing'' the Cache Manager, just making sure it's
685 * a_call : Ptr to Rx call on which this request came in.
691 * Nothing interesting.
695 *------------------------------------------------------------------------*/
698 SRXAFSCB_Probe(struct rx_call *a_call)
704 AFS_STATCNT(SRXAFSCB_Probe);
706 XSTATS_START_CMTIME(AFS_STATS_CM_RPCIDX_PROBE);
713 } /*SRXAFSCB_Probe */
716 /*------------------------------------------------------------------------
717 * EXPORTED SRXAFSCB_InitCallBackState
720 * Routine called by the server-side callback RPC interface to
721 * implement clearing all callbacks from this host.
724 * a_call : Ptr to Rx call on which this request came in.
730 * Nothing interesting.
734 *------------------------------------------------------------------------*/
737 SRXAFSCB_InitCallBackState(struct rx_call *a_call)
740 register struct vcache *tvc;
741 register struct rx_connection *tconn;
742 register struct rx_peer *peer;
749 XSTATS_START_CMTIME(AFS_STATS_CM_RPCIDX_INITCALLBACKSTATE);
750 AFS_STATCNT(SRXAFSCB_InitCallBackState);
753 * Find the address of the host making this call
755 if ((tconn = rx_ConnectionOf(a_call)) && (peer = rx_PeerOf(tconn))) {
758 afs_oddCBs++; /*Including any missed via create race */
759 afs_evenCBs++; /*Including any missed via create race */
761 ts = afs_FindServer(rx_HostOf(peer), rx_PortOf(peer), (afsUUID *) 0,
764 for (i = 0; i < VCSIZE; i++)
765 for (tvc = afs_vhashT[i]; tvc; tvc = tvc->hnext) {
766 if (tvc->callback == ts) {
767 ObtainWriteLock(&afs_xcbhash, 451);
768 afs_DequeueCallback(tvc);
769 tvc->callback = NULL;
770 tvc->f.states &= ~(CStatd | CUnique | CBulkFetching);
771 ReleaseWriteLock(&afs_xcbhash);
775 /* capabilities need be requested again */
776 ObtainWriteLock(&afs_xserver, 877);
777 ts->flags &= ~SCAPS_KNOWN;
778 ReleaseWriteLock(&afs_xserver);
783 /* find any volumes residing on this server and flush their state */
785 register struct volume *tv;
788 for (i = 0; i < NVOLS; i++)
789 for (tv = afs_volumes[i]; tv; tv = tv->next) {
790 for (j = 0; j < AFS_MAXHOSTS; j++)
791 if (tv->serverHost[j] == ts)
792 afs_ResetVolumeInfo(tv);
795 osi_dnlc_purge(); /* may be a little bit extreme */
804 } /*SRXAFSCB_InitCallBackState */
807 /*------------------------------------------------------------------------
808 * EXPORTED SRXAFSCB_XStatsVersion
811 * Routine called by the server-side callback RPC interface to
812 * implement pulling out the xstat version number for the Cache
816 * a_versionP : Ptr to the version number variable to set.
822 * Nothing interesting.
826 *------------------------------------------------------------------------*/
829 SRXAFSCB_XStatsVersion(struct rx_call *a_call, afs_int32 * a_versionP)
836 XSTATS_START_CMTIME(AFS_STATS_CM_RPCIDX_XSTATSVERSION);
838 *a_versionP = AFSCB_XSTAT_VERSION;
845 } /*SRXAFSCB_XStatsVersion */
848 /*------------------------------------------------------------------------
849 * EXPORTED SRXAFSCB_GetXStats
852 * Routine called by the server-side callback RPC interface to
853 * implement getting the given data collection from the extended
854 * Cache Manager statistics.
857 * a_call : Ptr to Rx call on which this request came in.
858 * a_clientVersionNum : Client version number.
859 * a_opCode : Desired operation.
860 * a_serverVersionNumP : Ptr to version number to set.
861 * a_timeP : Ptr to time value (seconds) to set.
862 * a_dataArray : Ptr to variable array structure to return
869 * Nothing interesting.
873 *------------------------------------------------------------------------*/
876 SRXAFSCB_GetXStats(struct rx_call *a_call, afs_int32 a_clientVersionNum,
877 afs_int32 a_collectionNumber, afs_int32 * a_srvVersionNumP,
878 afs_int32 * a_timeP, AFSCB_CollData * a_dataP)
880 register int code; /*Return value */
881 afs_int32 *dataBuffP; /*Ptr to data to be returned */
882 afs_int32 dataBytes; /*Bytes in data buffer */
887 XSTATS_START_CMTIME(AFS_STATS_CM_RPCIDX_GETXSTATS);
890 * Record the time of day and the server version number.
892 *a_srvVersionNumP = AFSCB_XSTAT_VERSION;
893 *a_timeP = osi_Time();
896 * Stuff the appropriate data in there (assume victory)
902 * We're not keeping stats, so just return successfully with
905 a_dataP->AFSCB_CollData_len = 0;
906 a_dataP->AFSCB_CollData_val = NULL;
908 switch (a_collectionNumber) {
909 case AFSCB_XSTATSCOLL_CALL_INFO:
911 * Pass back all the call-count-related data.
913 * >>> We are forced to allocate a separate area in which to
914 * >>> put this stuff in by the RPC stub generator, since it
915 * >>> will be freed at the tail end of the server stub code.
917 dataBytes = sizeof(struct afs_CMStats);
918 dataBuffP = (afs_int32 *) afs_osi_Alloc(dataBytes);
919 memcpy((char *)dataBuffP, (char *)&afs_cmstats, dataBytes);
920 a_dataP->AFSCB_CollData_len = dataBytes >> 2;
921 a_dataP->AFSCB_CollData_val = dataBuffP;
924 case AFSCB_XSTATSCOLL_PERF_INFO:
926 * Update and then pass back all the performance-related data.
927 * Note: the only performance fields that need to be computed
928 * at this time are the number of accesses for this collection
929 * and the current server record info.
931 * >>> We are forced to allocate a separate area in which to
932 * >>> put this stuff in by the RPC stub generator, since it
933 * >>> will be freed at the tail end of the server stub code.
935 afs_stats_cmperf.numPerfCalls++;
937 dataBytes = sizeof(afs_stats_cmperf);
938 dataBuffP = (afs_int32 *) afs_osi_Alloc(dataBytes);
939 memcpy((char *)dataBuffP, (char *)&afs_stats_cmperf, dataBytes);
940 a_dataP->AFSCB_CollData_len = dataBytes >> 2;
941 a_dataP->AFSCB_CollData_val = dataBuffP;
944 case AFSCB_XSTATSCOLL_FULL_PERF_INFO:
946 * Pass back the full range of performance and statistical
947 * data available. We have to bring the normal performance
948 * data collection up to date, then copy that data into
949 * the full collection.
951 * >>> We are forced to allocate a separate area in which to
952 * >>> put this stuff in by the RPC stub generator, since it
953 * >>> will be freed at the tail end of the server stub code.
955 afs_stats_cmperf.numPerfCalls++;
957 memcpy((char *)(&(afs_stats_cmfullperf.perf)),
958 (char *)(&afs_stats_cmperf), sizeof(struct afs_stats_CMPerf));
959 afs_stats_cmfullperf.numFullPerfCalls++;
961 dataBytes = sizeof(afs_stats_cmfullperf);
962 dataBuffP = (afs_int32 *) afs_osi_Alloc(dataBytes);
963 memcpy((char *)dataBuffP, (char *)(&afs_stats_cmfullperf), dataBytes);
964 a_dataP->AFSCB_CollData_len = dataBytes >> 2;
965 a_dataP->AFSCB_CollData_val = dataBuffP;
970 * Illegal collection number.
972 a_dataP->AFSCB_CollData_len = 0;
973 a_dataP->AFSCB_CollData_val = NULL;
975 } /*Switch on collection number */
976 #endif /* AFS_NOSTATS */
984 } /*SRXAFSCB_GetXStats */
987 /*------------------------------------------------------------------------
988 * EXPORTED afs_RXCallBackServer
991 * Body of the thread supporting callback services.
1000 * Nothing interesting.
1004 *------------------------------------------------------------------------*/
1007 afs_RXCallBackServer(void)
1009 AFS_STATCNT(afs_RXCallBackServer);
1014 afs_osi_Sleep(&afs_server);
1018 * Donate this process to Rx.
1020 rx_ServerProc(NULL);
1023 } /*afs_RXCallBackServer */
1026 /*------------------------------------------------------------------------
1027 * EXPORTED shutdown_CB
1030 * Zero out important Cache Manager data structures.
1039 * Nothing interesting.
1043 *------------------------------------------------------------------------*/
1048 AFS_STATCNT(shutdown_CB);
1050 if (afs_cold_shutdown) {
1051 afs_oddCBs = afs_evenCBs = afs_allCBs = afs_allZaps = afs_oddZaps =
1052 afs_evenZaps = afs_connectBacks = 0;
1059 /*------------------------------------------------------------------------
1060 * EXPORTED SRXAFSCB_InitCallBackState2
1063 * This routine was used in the AFS 3.5 beta release, but not anymore.
1064 * It has since been replaced by SRXAFSCB_InitCallBackState3.
1067 * a_call : Ptr to Rx call on which this request came in.
1070 * RXGEN_OPCODE (always).
1073 * Nothing interesting.
1077 *------------------------------------------------------------------------*/
1080 SRXAFSCB_InitCallBackState2(struct rx_call *a_call,
1081 struct interfaceAddr *addr)
1083 return RXGEN_OPCODE;
1086 /*------------------------------------------------------------------------
1087 * EXPORTED SRXAFSCB_WhoAreYou
1090 * Routine called by the server-side callback RPC interface to
1091 * obtain a unique identifier for the client. The server uses
1092 * this identifier to figure out whether or not two RX connections
1093 * are from the same client, and to find out which addresses go
1094 * with which clients.
1097 * a_call : Ptr to Rx call on which this request came in.
1098 * addr: Ptr to return the list of interfaces for this client.
1104 * Nothing interesting.
1108 *------------------------------------------------------------------------*/
1111 SRXAFSCB_WhoAreYou(struct rx_call *a_call, struct interfaceAddr *addr)
1118 AFS_STATCNT(SRXAFSCB_WhoAreYou);
1120 memset(addr, 0, sizeof(*addr));
1122 ObtainReadLock(&afs_xinterface);
1124 /* return all network interface addresses */
1125 addr->numberOfInterfaces = afs_cb_interface.numberOfInterfaces;
1126 addr->uuid = afs_cb_interface.uuid;
1127 for (i = 0; i < afs_cb_interface.numberOfInterfaces; i++) {
1128 addr->addr_in[i] = ntohl(afs_cb_interface.addr_in[i]);
1129 addr->subnetmask[i] = ntohl(afs_cb_interface.subnetmask[i]);
1130 addr->mtu[i] = ntohl(afs_cb_interface.mtu[i]);
1133 ReleaseReadLock(&afs_xinterface);
1141 /*------------------------------------------------------------------------
1142 * EXPORTED SRXAFSCB_InitCallBackState3
1145 * Routine called by the server-side callback RPC interface to
1146 * implement clearing all callbacks from this host.
1149 * a_call : Ptr to Rx call on which this request came in.
1155 * Nothing interesting.
1159 *------------------------------------------------------------------------*/
1162 SRXAFSCB_InitCallBackState3(struct rx_call *a_call, afsUUID * a_uuid)
1167 * TBD: Lookup the server by the UUID instead of its IP address.
1169 code = SRXAFSCB_InitCallBackState(a_call);
1175 /*------------------------------------------------------------------------
1176 * EXPORTED SRXAFSCB_ProbeUuid
1179 * Routine called by the server-side callback RPC interface to
1180 * implement ``probing'' the Cache Manager, just making sure it's
1181 * still there is still the same client it used to be.
1184 * a_call : Ptr to Rx call on which this request came in.
1185 * a_uuid : Ptr to UUID that must match the client's UUID.
1188 * 0 if a_uuid matches the UUID for this client
1189 * Non-zero otherwize
1192 * Nothing interesting.
1196 *------------------------------------------------------------------------*/
1199 SRXAFSCB_ProbeUuid(struct rx_call *a_call, afsUUID * a_uuid)
1205 AFS_STATCNT(SRXAFSCB_Probe);
1207 XSTATS_START_CMTIME(AFS_STATS_CM_RPCIDX_PROBE);
1208 if (!afs_uuid_equal(a_uuid, &afs_cb_interface.uuid))
1209 code = 1; /* failure */
1218 /*------------------------------------------------------------------------
1219 * EXPORTED SRXAFSCB_GetServerPrefs
1222 * Routine to list server preferences used by this client.
1225 * a_call : Ptr to Rx call on which this request came in.
1226 * a_index : Input server index
1227 * a_srvr_addr : Output server address in host byte order
1228 * (0xffffffff on last server)
1229 * a_srvr_rank : Output server rank
1235 * Nothing interesting.
1239 *------------------------------------------------------------------------*/
1242 SRXAFSCB_GetServerPrefs(struct rx_call *a_call, afs_int32 a_index,
1243 afs_int32 * a_srvr_addr, afs_int32 * a_srvr_rank)
1249 AFS_STATCNT(SRXAFSCB_GetServerPrefs);
1251 ObtainReadLock(&afs_xserver);
1253 /* Search the hash table for the server with this index */
1254 *a_srvr_addr = 0xffffffff;
1255 *a_srvr_rank = 0xffffffff;
1256 for (i = 0, j = 0; j < NSERVERS && i <= a_index; j++) {
1257 for (sa = afs_srvAddrs[j]; sa && i <= a_index; sa = sa->next_bkt, i++) {
1259 *a_srvr_addr = ntohl(sa->sa_ip);
1260 *a_srvr_rank = sa->sa_iprank;
1265 ReleaseReadLock(&afs_xserver);
1273 /*------------------------------------------------------------------------
1274 * EXPORTED SRXAFSCB_GetCellServDB
1277 * Routine to list cells configured for this client
1280 * a_call : Ptr to Rx call on which this request came in.
1281 * a_index : Input cell index
1282 * a_name : Output cell name ("" on last cell)
1283 * a_hosts : Output cell database servers in host byte order.
1289 * Nothing interesting.
1293 *------------------------------------------------------------------------*/
1296 SRXAFSCB_GetCellServDB(struct rx_call *a_call, afs_int32 a_index,
1297 char **a_name, serverList * a_hosts)
1301 char *t_name, *p_name = NULL;
1304 AFS_STATCNT(SRXAFSCB_GetCellServDB);
1306 tcell = afs_GetCellByIndex(a_index, READ_LOCK);
1310 a_hosts->serverList_val = 0;
1311 a_hosts->serverList_len = 0;
1313 p_name = tcell->cellName;
1314 for (j = 0; j < AFSMAXCELLHOSTS && tcell->cellHosts[j]; j++);
1316 a_hosts->serverList_val =
1317 (afs_int32 *) afs_osi_Alloc(j * sizeof(afs_int32));
1318 a_hosts->serverList_len = j;
1319 for (j = 0; j < AFSMAXCELLHOSTS && tcell->cellHosts[j]; j++)
1320 a_hosts->serverList_val[j] =
1321 ntohl(tcell->cellHosts[j]->addr->sa_ip);
1322 afs_PutCell(tcell, READ_LOCK);
1325 t_name = (char *)afs_osi_Alloc(i + 1);
1326 if (t_name == NULL) {
1327 afs_osi_Free(a_hosts->serverList_val, (j * sizeof(afs_int32)));
1334 memcpy(t_name, p_name, i);
1343 /*------------------------------------------------------------------------
1344 * EXPORTED SRXAFSCB_GetLocalCell
1347 * Routine to return name of client's local cell
1350 * a_call : Ptr to Rx call on which this request came in.
1351 * a_name : Output cell name
1357 * Nothing interesting.
1361 *------------------------------------------------------------------------*/
1364 SRXAFSCB_GetLocalCell(struct rx_call *a_call, char **a_name)
1368 char *t_name, *p_name = NULL;
1371 AFS_STATCNT(SRXAFSCB_GetLocalCell);
1373 /* Search the list for the primary cell. Cell number 1 is only
1374 * the primary cell is when no other cell is explicitly marked as
1375 * the primary cell. */
1376 tcell = afs_GetPrimaryCell(READ_LOCK);
1378 p_name = tcell->cellName;
1380 plen = strlen(p_name);
1383 t_name = (char *)afs_osi_Alloc(plen + 1);
1384 if (t_name == NULL) {
1386 afs_PutCell(tcell, READ_LOCK);
1391 t_name[plen] = '\0';
1393 memcpy(t_name, p_name, plen);
1399 afs_PutCell(tcell, READ_LOCK);
1405 * afs_MarshallCacheConfig - marshall client cache configuration
1409 * IN callerVersion - the rpc stat version of the caller.
1411 * IN config - client cache configuration.
1413 * OUT ptr - buffer where configuration is marshalled.
1420 afs_MarshallCacheConfig(afs_uint32 callerVersion, cm_initparams_v1 * config,
1423 AFS_STATCNT(afs_MarshallCacheConfig);
1425 * We currently only support version 1.
1427 *(ptr++) = config->nChunkFiles;
1428 *(ptr++) = config->nStatCaches;
1429 *(ptr++) = config->nDataCaches;
1430 *(ptr++) = config->nVolumeCaches;
1431 *(ptr++) = config->firstChunkSize;
1432 *(ptr++) = config->otherChunkSize;
1433 *(ptr++) = config->cacheSize;
1434 *(ptr++) = config->setTime;
1435 *(ptr++) = config->memCache;
1439 /*------------------------------------------------------------------------
1440 * EXPORTED SRXAFSCB_GetCacheConfig
1443 * Routine to return parameters used to initialize client cache.
1444 * Client may request any format version. Server may not return
1445 * format version greater than version requested by client.
1448 * a_call: Ptr to Rx call on which this request came in.
1449 * callerVersion: Data format version desired by the client.
1450 * serverVersion: Data format version of output data.
1451 * configCount: Number bytes allocated for output data.
1452 * config: Client cache configuration.
1458 * Nothing interesting.
1462 *------------------------------------------------------------------------*/
1465 SRXAFSCB_GetCacheConfig(struct rx_call *a_call, afs_uint32 callerVersion,
1466 afs_uint32 * serverVersion, afs_uint32 * configCount,
1467 cacheConfig * config)
1469 afs_uint32 *t_config;
1471 cm_initparams_v1 cm_config;
1474 AFS_STATCNT(SRXAFSCB_GetCacheConfig);
1477 * Currently only support version 1
1479 allocsize = sizeof(cm_initparams_v1);
1480 t_config = (afs_uint32 *) afs_osi_Alloc(allocsize);
1481 if (t_config == NULL) {
1486 cm_config.nChunkFiles = cm_initParams.cmi_nChunkFiles;
1487 cm_config.nStatCaches = cm_initParams.cmi_nStatCaches;
1488 cm_config.nDataCaches = cm_initParams.cmi_nDataCaches;
1489 cm_config.nVolumeCaches = cm_initParams.cmi_nVolumeCaches;
1490 cm_config.firstChunkSize = cm_initParams.cmi_firstChunkSize;
1491 cm_config.otherChunkSize = cm_initParams.cmi_otherChunkSize;
1492 cm_config.cacheSize = cm_initParams.cmi_cacheSize;
1493 cm_config.setTime = cm_initParams.cmi_setTime;
1494 cm_config.memCache = cm_initParams.cmi_memCache;
1496 afs_MarshallCacheConfig(callerVersion, &cm_config, t_config);
1498 *serverVersion = AFS_CLIENT_RETRIEVAL_FIRST_EDITION;
1499 *configCount = allocsize;
1500 config->cacheConfig_val = t_config;
1501 config->cacheConfig_len = allocsize / sizeof(afs_uint32);
1508 /*------------------------------------------------------------------------
1509 * EXPORTED SRXAFSCB_FetchData
1512 * Routine to do third party move from a remioserver to the original
1513 * issuer of an ArchiveData request. Presently supported only by the
1514 * "fs" command, not by the AFS client.
1517 * rxcall: Ptr to Rx call on which this request came in.
1518 * Fid: pointer to AFSFid structure.
1519 * Fd: File descriptor inside fs command.
1520 * Position: Offset in the file.
1521 * Length: Data length to transfer.
1522 * TotalLength: Pointer to total file length field
1528 * Nothing interesting.
1531 *------------------------------------------------------------------------*/
1533 SRXAFSCB_FetchData(struct rx_call *rxcall, struct AFSFid *Fid, afs_int32 Fd,
1534 afs_int64 Position, afs_int64 Length,
1535 afs_int64 * TotalLength)
1540 /*------------------------------------------------------------------------
1541 * EXPORTED SRXAFSCB_StoreData
1544 * Routine to do third party move from a remioserver to the original
1545 * issuer of a RetrieveData request. Presently supported only by the
1546 * "fs" command, not by the AFS client.
1549 * rxcall: Ptr to Rx call on which this request came in.
1550 * Fid: pointer to AFSFid structure.
1551 * Fd: File descriptor inside fs command.
1552 * Position: Offset in the file.
1553 * Length: Data length to transfer.
1554 * TotalLength: Pointer to total file length field
1560 * Nothing interesting.
1564 *------------------------------------------------------------------------*/
1566 SRXAFSCB_StoreData(struct rx_call *rxcall, struct AFSFid *Fid, afs_int32 Fd,
1567 afs_int64 Position, afs_int64 Length,
1568 afs_int64 * TotalLength)
1573 /*------------------------------------------------------------------------
1574 * EXPORTED SRXAFSCB_GetCellByNum
1577 * Routine to get information about a cell specified by its
1578 * cell number (returned by GetCE/GetCE64).
1581 * a_call : Ptr to Rx call on which this request came in.
1582 * a_cellnum : Input cell number
1583 * a_name : Output cell name (one zero byte when no such cell).
1584 * a_hosts : Output cell database servers in host byte order.
1590 * Nothing interesting.
1594 *------------------------------------------------------------------------*/
1597 SRXAFSCB_GetCellByNum(struct rx_call *a_call, afs_int32 a_cellnum,
1598 char **a_name, serverList * a_hosts)
1604 AFS_STATCNT(SRXAFSCB_GetCellByNum);
1606 a_hosts->serverList_val = 0;
1607 a_hosts->serverList_len = 0;
1609 tcell = afs_GetCellStale(a_cellnum, READ_LOCK);
1611 *a_name = afs_strdup("");
1616 ObtainReadLock(&tcell->lock);
1617 *a_name = afs_strdup(tcell->cellName);
1619 for (sn = 0; sn < AFSMAXCELLHOSTS && tcell->cellHosts[sn]; sn++);
1620 a_hosts->serverList_len = sn;
1621 a_hosts->serverList_val =
1622 (afs_int32 *) afs_osi_Alloc(sn * sizeof(afs_int32));
1624 for (i = 0; i < sn; i++)
1625 a_hosts->serverList_val[i] = ntohl(tcell->cellHosts[i]->addr->sa_ip);
1626 ReleaseReadLock(&tcell->lock);
1627 afs_PutCell(tcell, READ_LOCK);
1634 SRXAFSCB_TellMeAboutYourself(struct rx_call *a_call,
1635 struct interfaceAddr *addr,
1636 Capabilities * capabilities)
1640 afs_uint32 *dataBuffP;
1641 afs_int32 dataBytes;
1645 AFS_STATCNT(SRXAFSCB_WhoAreYou);
1647 ObtainReadLock(&afs_xinterface);
1649 /* return all network interface addresses */
1650 addr->numberOfInterfaces = afs_cb_interface.numberOfInterfaces;
1651 addr->uuid = afs_cb_interface.uuid;
1652 for (i = 0; i < afs_cb_interface.numberOfInterfaces; i++) {
1653 addr->addr_in[i] = ntohl(afs_cb_interface.addr_in[i]);
1654 addr->subnetmask[i] = ntohl(afs_cb_interface.subnetmask[i]);
1655 addr->mtu[i] = ntohl(afs_cb_interface.mtu[i]);
1658 ReleaseReadLock(&afs_xinterface);
1662 dataBytes = 1 * sizeof(afs_uint32);
1663 dataBuffP = (afs_uint32 *) afs_osi_Alloc(dataBytes);
1664 dataBuffP[0] = CLIENT_CAPABILITY_ERRORTRANS;
1665 capabilities->Capabilities_len = dataBytes / sizeof(afs_uint32);
1666 capabilities->Capabilities_val = dataBuffP;
1672 #if 0 && defined(AFS_LINUX24_ENV)
1673 extern struct vcache *afs_globalVp;
1675 int recurse_dcache_parent(parent, a_index, addr, inode, flags, time, fileName)
1676 struct dentry * parent;
1684 struct dentry *this_parent = parent;
1685 struct list_head *next;
1687 struct dentry *dentry;
1690 next = this_parent->d_subdirs.next;
1692 while (next != &this_parent->d_subdirs) {
1693 struct list_head *tmp = next;
1694 dentry = list_entry(tmp, struct dentry, d_child);
1700 * Descend a level if the d_subdirs list is non-empty.
1702 if (!list_empty(&dentry->d_subdirs)) {
1703 this_parent = dentry;
1708 * All done at this level ... ascend and resume the search.
1710 if (this_parent != parent) {
1711 next = this_parent->d_child.next;
1712 this_parent = this_parent->d_parent;
1718 if (d_unhashed(dentry))
1723 *fileName = afs_strdup(dentry->d_name.name?dentry->d_name.name:"");
1724 *inode = ITOAFS(dentry->d_inode);
1725 *addr = atomic_read(&(dentry)->d_count);
1726 *time = dentry->d_time;
1735 SRXAFSCB_GetDE(struct rx_call *a_call, afs_int32 a_index, afs_int32 *addr,
1736 afs_int32 *inode, afs_int32 *flags, afs_int32 *time,
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*/