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},
68 { "afs_dynrootDirLock", (char *)&afs_dynrootDirLock},
69 { "afs_dynSymlinkLock", (char *)&afs_dynSymlinkLock},
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 int i; /*Loop variable */
107 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 int i; /*Loop variable */
193 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 a_result->Length = tvc->f.m.Length;
240 a_result->DataVersion = hgetlo(tvc->f.m.DataVersion);
241 a_result->callback = afs_data_pointer_to_int32(tvc->callback); /* XXXX Now a pointer; change it XXXX */
242 a_result->cbExpires = tvc->cbExpires;
243 if (tvc->f.states & CVInit) {
244 a_result->refCount = 1;
246 #ifdef AFS_DARWIN80_ENV
247 a_result->refCount = vnode_isinuse(AFSTOV(tvc),0)?1:0; /* XXX fix */
249 a_result->refCount = VREFCOUNT(tvc);
252 a_result->opens = tvc->opens;
253 a_result->writers = tvc->execsOrWriters;
254 a_result->mvstat = tvc->mvstat;
255 a_result->states = tvc->f.states;
259 * Return our results.
268 } /*SRXAFSCB_GetCE64 */
271 /*------------------------------------------------------------------------
272 * EXPORTED SRXAFSCB_GetLock
275 * Routine called by the server-side callback RPC interface to
276 * implement pulling out the contents of a lock in the lock
280 * a_call : Ptr to Rx call on which this request came in.
281 * a_index : Index of desired lock.
282 * a_result : Ptr to a buffer for the given lock.
285 * 0 if everything went fine,
286 * 1 if we were given a bad index.
289 * Nothing interesting.
293 *------------------------------------------------------------------------*/
296 SRXAFSCB_GetLock(struct rx_call *a_call, afs_int32 a_index,
297 struct AFSDBLock *a_result)
299 struct ltable *tl; /*Ptr to lock table entry */
300 int nentries; /*Num entries in table */
301 int code; /*Return code */
306 XSTATS_START_CMTIME(AFS_STATS_CM_RPCIDX_GETLOCK);
308 AFS_STATCNT(SRXAFSCB_GetLock);
309 memset(a_result, 0, sizeof(*a_result));
310 nentries = sizeof(ltable) / sizeof(struct ltable);
311 if (a_index < 0 || a_index >= nentries+afs_cellindex) {
316 } else if (a_index >= nentries) {
317 struct cell *tc = afs_GetCellByIndex(a_index-nentries, 0);
318 strcpy(a_result->name, tc->cellName);
319 a_result->lock.waitStates =
320 ((struct afs_lock *)&(tc->lock))->wait_states;
321 a_result->lock.exclLocked =
322 ((struct afs_lock *)&(tc->lock))->excl_locked;
323 a_result->lock.readersReading =
324 ((struct afs_lock *)&(tc->lock))->readers_reading;
325 a_result->lock.numWaiting =
326 ((struct afs_lock *)&(tc->lock))->num_waiting;
327 #ifdef INSTRUMENT_LOCKS
328 a_result->lock.pid_last_reader =
329 MyPidxx2Pid(((struct afs_lock *)&(tc->lock))->pid_last_reader);
330 a_result->lock.pid_writer =
331 MyPidxx2Pid(((struct afs_lock *)&(tc->lock))->pid_writer);
332 a_result->lock.src_indicator =
333 ((struct afs_lock *)&(tc->lock))->src_indicator;
335 a_result->lock.pid_last_reader = 0;
336 a_result->lock.pid_writer = 0;
337 a_result->lock.src_indicator = 0;
342 * Found it - copy out its contents.
344 tl = <able[a_index];
345 strcpy(a_result->name, tl->name);
346 a_result->lock.waitStates =
347 ((struct afs_lock *)(tl->addr))->wait_states;
348 a_result->lock.exclLocked =
349 ((struct afs_lock *)(tl->addr))->excl_locked;
350 a_result->lock.readersReading =
351 ((struct afs_lock *)(tl->addr))->readers_reading;
352 a_result->lock.numWaiting =
353 ((struct afs_lock *)(tl->addr))->num_waiting;
354 #ifdef INSTRUMENT_LOCKS
355 a_result->lock.pid_last_reader =
356 MyPidxx2Pid(((struct afs_lock *)(tl->addr))->pid_last_reader);
357 a_result->lock.pid_writer =
358 MyPidxx2Pid(((struct afs_lock *)(tl->addr))->pid_writer);
359 a_result->lock.src_indicator =
360 ((struct afs_lock *)(tl->addr))->src_indicator;
362 a_result->lock.pid_last_reader = 0;
363 a_result->lock.pid_writer = 0;
364 a_result->lock.src_indicator = 0;
375 } /*SRXAFSCB_GetLock */
378 /*------------------------------------------------------------------------
379 * static ClearCallBack
382 * Clear out callback information for the specified file, or
383 * even a whole volume. Used to worry about callback was from
384 * within the particular cell or not. Now we don't bother with
385 * that anymore; it's not worth the time.
388 * a_conn : Ptr to Rx connection involved.
389 * a_fid : Ptr to AFS fid being cleared.
395 * Nothing interesting.
400 Appears to need to be called with GLOCK held, as the icl_Event4 stuff asserts otherwise
402 *------------------------------------------------------------------------*/
405 ClearCallBack(struct rx_connection *a_conn,
406 struct AFSFid *a_fid)
410 struct VenusFid localFid;
412 #ifdef AFS_DARWIN80_ENV
416 AFS_STATCNT(ClearCallBack);
421 * XXXX Don't hold any server locks here because of callback protocol XXX
424 localFid.Fid.Volume = a_fid->Volume;
425 localFid.Fid.Vnode = a_fid->Vnode;
426 localFid.Fid.Unique = a_fid->Unique;
429 * Volume ID of zero means don't do anything.
431 if (a_fid->Volume != 0) {
432 if (a_fid->Vnode == 0) {
433 struct afs_q *tq, *uq;
435 * Clear callback for the whole volume. Zip through the
436 * hash chain, nullifying entries whose volume ID matches.
439 ObtainReadLock(&afs_xvcache);
440 i = VCHashV(&localFid);
441 for (tq = afs_vhashTV[i].prev; tq != &afs_vhashTV[i]; tq = uq) {
444 if (tvc->f.fid.Fid.Volume == a_fid->Volume) {
445 tvc->callback = NULL;
447 localFid.Cell = tvc->f.fid.Cell;
448 tvc->dchint = NULL; /* invalidate hints */
449 if (tvc->f.states & CVInit) {
450 ReleaseReadLock(&afs_xvcache);
451 afs_osi_Sleep(&tvc->f.states);
454 #if defined(AFS_SGI_ENV) || defined(AFS_SUN5_ENV) || defined(AFS_HPUX_ENV) || defined(AFS_LINUX20_ENV)
457 #ifdef AFS_DARWIN80_ENV
458 if (tvc->f.states & CDeadVnode) {
459 ReleaseReadLock(&afs_xvcache);
460 afs_osi_Sleep(&tvc->f.states);
476 ReleaseReadLock(&afs_xvcache);
477 afs_StaleVCacheFlags(tvc, 0, CUnique | CBulkFetching);
479 if (tvc->f.fid.Fid.Vnode & 1)
483 afs_Trace3(afs_iclSetp, CM_TRACE_CALLBACK,
484 ICL_TYPE_POINTER, tvc, ICL_TYPE_INT32,
485 tvc->f.states, ICL_TYPE_INT32,
487 #ifdef AFS_DARWIN80_ENV
488 vnode_put(AFSTOV(tvc));
490 ObtainReadLock(&afs_xvcache);
493 } else if ((tvc->f.states & CMValid)
494 && (tvc->mvid.target_root->Fid.Volume == a_fid->Volume)) {
495 tvc->f.states &= ~CMValid;
497 localFid.Cell = tvc->mvid.target_root->Cell;
500 ReleaseReadLock(&afs_xvcache);
503 * XXXX Don't hold any locks here XXXX
505 tv = afs_FindVolume(&localFid, 0);
507 afs_ResetVolumeInfo(tv);
508 afs_PutVolume(tv, 0);
509 /* invalidate mtpoint? */
511 } /*Clear callbacks for whole volume */
514 * Clear callbacks just for the one file.
518 if (a_fid->Vnode & 1)
519 afs_oddCBs++; /*Could do this on volume basis, too */
521 afs_evenCBs++; /*A particular fid was specified */
523 ObtainReadLock(&afs_xvcache);
524 i = VCHash(&localFid);
525 for (tvc = afs_vhashT[i]; tvc; tvc = uvc) {
527 if (tvc->f.fid.Fid.Vnode == a_fid->Vnode
528 && tvc->f.fid.Fid.Volume == a_fid->Volume
529 && tvc->f.fid.Fid.Unique == a_fid->Unique) {
530 tvc->callback = NULL;
531 tvc->dchint = NULL; /* invalidate hints */
532 if (tvc->f.states & CVInit) {
533 ReleaseReadLock(&afs_xvcache);
534 afs_osi_Sleep(&tvc->f.states);
537 #if defined(AFS_SGI_ENV) || defined(AFS_SUN5_ENV) || defined(AFS_HPUX_ENV) || defined(AFS_LINUX20_ENV)
540 #ifdef AFS_DARWIN80_ENV
541 if (tvc->f.states & CDeadVnode) {
542 ReleaseReadLock(&afs_xvcache);
543 afs_osi_Sleep(&tvc->f.states);
559 ReleaseReadLock(&afs_xvcache);
560 afs_StaleVCacheFlags(tvc, 0, CUnique | CBulkFetching);
561 afs_Trace3(afs_iclSetp, CM_TRACE_CALLBACK,
562 ICL_TYPE_POINTER, tvc, ICL_TYPE_INT32,
563 tvc->f.states, ICL_TYPE_LONG, 0);
565 lastCallBack_vnode = afid->Vnode;
566 lastCallBack_dv = tvc->mstat.DataVersion.low;
567 osi_GetuTime(&lastCallBack_time);
569 #ifdef AFS_DARWIN80_ENV
570 vnode_put(AFSTOV(tvc));
572 ObtainReadLock(&afs_xvcache);
576 } /*Walk through hash table */
577 ReleaseReadLock(&afs_xvcache);
578 } /*Clear callbacks for one file */
581 /*Fid has non-zero volume ID */
583 * Always return a predictable value.
590 /*------------------------------------------------------------------------
591 * EXPORTED SRXAFSCB_CallBack
594 * Routine called by the server-side callback RPC interface to
595 * implement passing in callback information.
599 * a_call : Ptr to Rx call on which this request came in.
600 * a_fids : Ptr to array of fids involved.
601 * a_callbacks : Ptr to matching callback info for the fids.
607 * Nothing interesting.
611 *------------------------------------------------------------------------*/
614 SRXAFSCB_CallBack(struct rx_call *a_call, struct AFSCBFids *a_fids,
615 struct AFSCBs *a_callbacks)
617 int i; /*Loop variable */
618 struct AFSFid *tfid; /*Ptr to current fid */
619 struct rx_connection *tconn; /*Call's connection */
625 XSTATS_START_CMTIME(AFS_STATS_CM_RPCIDX_CALLBACK);
627 AFS_STATCNT(SRXAFSCB_CallBack);
628 if (!(tconn = rx_ConnectionOf(a_call)))
630 tfid = (struct AFSFid *)a_fids->AFSCBFids_val;
633 * For now, we ignore callbacks, since the File Server only *breaks*
634 * callbacks at present.
636 for (i = 0; i < a_fids->AFSCBFids_len; i++)
637 ClearCallBack(tconn, &tfid[i]);
645 } /*SRXAFSCB_CallBack */
648 /*------------------------------------------------------------------------
649 * EXPORTED SRXAFSCB_Probe
652 * Routine called by the server-side callback RPC interface to
653 * implement ``probing'' the Cache Manager, just making sure it's
657 * a_call : Ptr to Rx call on which this request came in.
663 * Nothing interesting.
667 *------------------------------------------------------------------------*/
670 SRXAFSCB_Probe(struct rx_call *a_call)
676 AFS_STATCNT(SRXAFSCB_Probe);
678 XSTATS_START_CMTIME(AFS_STATS_CM_RPCIDX_PROBE);
685 } /*SRXAFSCB_Probe */
688 /*------------------------------------------------------------------------
689 * EXPORTED SRXAFSCB_InitCallBackState
692 * Routine called by the server-side callback RPC interface to
693 * implement clearing all callbacks from this host.
696 * a_call : Ptr to Rx call on which this request came in.
702 * Nothing interesting.
706 *------------------------------------------------------------------------*/
709 SRXAFSCB_InitCallBackState(struct rx_call *a_call)
713 struct rx_connection *tconn;
714 struct rx_peer *peer;
721 XSTATS_START_CMTIME(AFS_STATS_CM_RPCIDX_INITCALLBACKSTATE);
722 AFS_STATCNT(SRXAFSCB_InitCallBackState);
725 * Find the address of the host making this call
727 if ((tconn = rx_ConnectionOf(a_call)) && (peer = rx_PeerOf(tconn))) {
730 afs_oddCBs++; /*Including any missed via create race */
731 afs_evenCBs++; /*Including any missed via create race */
733 ts = afs_FindServer(rx_HostOf(peer), rx_PortOf(peer), (afsUUID *) 0,
736 for (i = 0; i < VCSIZE; i++)
737 for (tvc = afs_vhashT[i]; tvc; tvc = tvc->hnext) {
738 if (tvc->callback == ts) {
739 afs_StaleVCacheFlags(tvc, AFS_STALEVC_NODNLC |
741 CUnique | CBulkFetching);
745 /* capabilities need be requested again */
746 ts->flags &= ~SCAPS_KNOWN;
751 /* find any volumes residing on this server and flush their state */
756 for (i = 0; i < NVOLS; i++)
757 for (tv = afs_volumes[i]; tv; tv = tv->next) {
758 for (j = 0; j < AFS_MAXHOSTS; j++)
759 if (tv->serverHost[j] == ts)
760 afs_ResetVolumeInfo(tv);
763 osi_dnlc_purge(); /* may be a little bit extreme */
772 } /*SRXAFSCB_InitCallBackState */
775 /*------------------------------------------------------------------------
776 * EXPORTED SRXAFSCB_XStatsVersion
779 * Routine called by the server-side callback RPC interface to
780 * implement pulling out the xstat version number for the Cache
784 * a_versionP : Ptr to the version number variable to set.
790 * Nothing interesting.
794 *------------------------------------------------------------------------*/
797 SRXAFSCB_XStatsVersion(struct rx_call *a_call, afs_int32 * a_versionP)
804 XSTATS_START_CMTIME(AFS_STATS_CM_RPCIDX_XSTATSVERSION);
806 *a_versionP = AFSCB_XSTAT_VERSION;
813 } /*SRXAFSCB_XStatsVersion */
816 /*------------------------------------------------------------------------
817 * EXPORTED SRXAFSCB_GetXStats
820 * Routine called by the server-side callback RPC interface to
821 * implement getting the given data collection from the extended
822 * Cache Manager statistics.
825 * a_call : Ptr to Rx call on which this request came in.
826 * a_clientVersionNum : Client version number.
827 * a_opCode : Desired operation.
828 * a_serverVersionNumP : Ptr to version number to set.
829 * a_timeP : Ptr to time value (seconds) to set.
830 * a_dataArray : Ptr to variable array structure to return
837 * Nothing interesting.
841 *------------------------------------------------------------------------*/
844 SRXAFSCB_GetXStats(struct rx_call *a_call, afs_int32 a_clientVersionNum,
845 afs_int32 a_collectionNumber, afs_int32 * a_srvVersionNumP,
846 afs_int32 * a_timeP, AFSCB_CollData * a_dataP)
848 int code; /*Return value */
849 afs_int32 *dataBuffP; /*Ptr to data to be returned */
850 afs_int32 dataBytes; /*Bytes in data buffer */
855 XSTATS_START_CMTIME(AFS_STATS_CM_RPCIDX_GETXSTATS);
858 * Record the time of day and the server version number.
860 *a_srvVersionNumP = AFSCB_XSTAT_VERSION;
861 *a_timeP = osi_Time();
864 * Stuff the appropriate data in there (assume victory)
870 * We're not keeping stats, so just return successfully with
873 a_dataP->AFSCB_CollData_len = 0;
874 a_dataP->AFSCB_CollData_val = NULL;
876 switch (a_collectionNumber) {
877 case AFSCB_XSTATSCOLL_CALL_INFO:
879 * Pass back all the call-count-related data.
881 * >>> We are forced to allocate a separate area in which to
882 * >>> put this stuff in by the RPC stub generator, since it
883 * >>> will be freed at the tail end of the server stub code.
885 dataBytes = sizeof(struct afs_CMStats);
886 dataBuffP = (afs_int32 *) afs_osi_Alloc(dataBytes);
887 osi_Assert(dataBuffP != NULL);
888 memcpy((char *)dataBuffP, (char *)&afs_cmstats, dataBytes);
889 a_dataP->AFSCB_CollData_len = dataBytes >> 2;
890 a_dataP->AFSCB_CollData_val = dataBuffP;
893 case AFSCB_XSTATSCOLL_PERF_INFO:
895 * Update and then pass back all the performance-related data.
896 * Note: the only performance fields that need to be computed
897 * at this time are the number of accesses for this collection
898 * and the current server record info.
900 * >>> We are forced to allocate a separate area in which to
901 * >>> put this stuff in by the RPC stub generator, since it
902 * >>> will be freed at the tail end of the server stub code.
904 afs_stats_cmperf.numPerfCalls++;
906 dataBytes = sizeof(afs_stats_cmperf);
907 dataBuffP = (afs_int32 *) afs_osi_Alloc(dataBytes);
908 osi_Assert(dataBuffP != NULL);
909 memcpy((char *)dataBuffP, (char *)&afs_stats_cmperf, dataBytes);
910 a_dataP->AFSCB_CollData_len = dataBytes >> 2;
911 a_dataP->AFSCB_CollData_val = dataBuffP;
914 case AFSCB_XSTATSCOLL_FULL_PERF_INFO:
916 * Pass back the full range of performance and statistical
917 * data available. We have to bring the normal performance
918 * data collection up to date, then copy that data into
919 * the full collection.
921 * >>> We are forced to allocate a separate area in which to
922 * >>> put this stuff in by the RPC stub generator, since it
923 * >>> will be freed at the tail end of the server stub code.
925 afs_stats_cmperf.numPerfCalls++;
927 memcpy((char *)(&(afs_stats_cmfullperf.perf)),
928 (char *)(&afs_stats_cmperf), sizeof(struct afs_stats_CMPerf));
929 afs_stats_cmfullperf.numFullPerfCalls++;
931 dataBytes = sizeof(afs_stats_cmfullperf);
932 dataBuffP = (afs_int32 *) afs_osi_Alloc(dataBytes);
933 osi_Assert(dataBuffP != NULL);
934 memcpy((char *)dataBuffP, (char *)(&afs_stats_cmfullperf), dataBytes);
935 a_dataP->AFSCB_CollData_len = dataBytes >> 2;
936 a_dataP->AFSCB_CollData_val = dataBuffP;
941 * Illegal collection number.
943 a_dataP->AFSCB_CollData_len = 0;
944 a_dataP->AFSCB_CollData_val = NULL;
946 } /*Switch on collection number */
947 #endif /* AFS_NOSTATS */
955 } /*SRXAFSCB_GetXStats */
958 /*------------------------------------------------------------------------
959 * EXPORTED afs_RXCallBackServer
962 * Body of the thread supporting callback services.
971 * Nothing interesting.
975 *------------------------------------------------------------------------*/
978 afs_RXCallBackServer(void)
980 AFS_STATCNT(afs_RXCallBackServer);
985 afs_osi_Sleep(&afs_server);
989 * Donate this process to Rx.
994 } /*afs_RXCallBackServer */
997 /*------------------------------------------------------------------------
998 * EXPORTED shutdown_CB
1001 * Zero out important Cache Manager data structures.
1010 * Nothing interesting.
1014 *------------------------------------------------------------------------*/
1019 AFS_STATCNT(shutdown_CB);
1021 if (afs_cold_shutdown) {
1022 afs_oddCBs = afs_evenCBs = afs_allCBs = afs_allZaps = afs_oddZaps =
1023 afs_evenZaps = afs_connectBacks = 0;
1030 /*------------------------------------------------------------------------
1031 * EXPORTED SRXAFSCB_InitCallBackState2
1034 * This routine was used in the AFS 3.5 beta release, but not anymore.
1035 * It has since been replaced by SRXAFSCB_InitCallBackState3.
1038 * a_call : Ptr to Rx call on which this request came in.
1041 * RXGEN_OPCODE (always).
1044 * Nothing interesting.
1048 *------------------------------------------------------------------------*/
1051 SRXAFSCB_InitCallBackState2(struct rx_call *a_call,
1052 struct interfaceAddr *addr)
1054 return RXGEN_OPCODE;
1057 /*------------------------------------------------------------------------
1058 * EXPORTED SRXAFSCB_WhoAreYou
1061 * Routine called by the server-side callback RPC interface to
1062 * obtain a unique identifier for the client. The server uses
1063 * this identifier to figure out whether or not two RX connections
1064 * are from the same client, and to find out which addresses go
1065 * with which clients.
1068 * a_call : Ptr to Rx call on which this request came in.
1069 * addr: Ptr to return the list of interfaces for this client.
1075 * Nothing interesting.
1079 *------------------------------------------------------------------------*/
1082 SRXAFSCB_WhoAreYou(struct rx_call *a_call, struct interfaceAddr *addr)
1089 AFS_STATCNT(SRXAFSCB_WhoAreYou);
1091 memset(addr, 0, sizeof(*addr));
1093 ObtainReadLock(&afs_xinterface);
1095 /* return all network interface addresses */
1096 addr->numberOfInterfaces = afs_cb_interface.numberOfInterfaces;
1097 addr->uuid = afs_cb_interface.uuid;
1098 for (i = 0; i < afs_cb_interface.numberOfInterfaces; i++) {
1099 addr->addr_in[i] = ntohl(afs_cb_interface.addr_in[i]);
1100 addr->subnetmask[i] = ntohl(afs_cb_interface.subnetmask[i]);
1101 addr->mtu[i] = ntohl(afs_cb_interface.mtu[i]);
1104 ReleaseReadLock(&afs_xinterface);
1112 /*------------------------------------------------------------------------
1113 * EXPORTED SRXAFSCB_InitCallBackState3
1116 * Routine called by the server-side callback RPC interface to
1117 * implement clearing all callbacks from this host.
1120 * a_call : Ptr to Rx call on which this request came in.
1126 * Nothing interesting.
1130 *------------------------------------------------------------------------*/
1133 SRXAFSCB_InitCallBackState3(struct rx_call *a_call, afsUUID * a_uuid)
1138 * TBD: Lookup the server by the UUID instead of its IP address.
1140 code = SRXAFSCB_InitCallBackState(a_call);
1146 /*------------------------------------------------------------------------
1147 * EXPORTED SRXAFSCB_ProbeUuid
1150 * Routine called by the server-side callback RPC interface to
1151 * implement ``probing'' the Cache Manager, just making sure it's
1152 * still there is still the same client it used to be.
1155 * a_call : Ptr to Rx call on which this request came in.
1156 * a_uuid : Ptr to UUID that must match the client's UUID.
1159 * 0 if a_uuid matches the UUID for this client
1160 * Non-zero otherwize
1163 * Nothing interesting.
1167 *------------------------------------------------------------------------*/
1170 SRXAFSCB_ProbeUuid(struct rx_call *a_call, afsUUID * a_uuid)
1176 AFS_STATCNT(SRXAFSCB_Probe);
1178 XSTATS_START_CMTIME(AFS_STATS_CM_RPCIDX_PROBE);
1179 if (!afs_uuid_equal(a_uuid, &afs_cb_interface.uuid))
1180 code = 1; /* failure */
1189 /*------------------------------------------------------------------------
1190 * EXPORTED SRXAFSCB_GetServerPrefs
1193 * Routine to list server preferences used by this client.
1196 * a_call : Ptr to Rx call on which this request came in.
1197 * a_index : Input server index
1198 * a_srvr_addr : Output server address in host byte order
1199 * (0xffffffff on last server)
1200 * a_srvr_rank : Output server rank
1206 * Nothing interesting.
1210 *------------------------------------------------------------------------*/
1213 SRXAFSCB_GetServerPrefs(struct rx_call *a_call, afs_int32 a_index,
1214 afs_int32 * a_srvr_addr, afs_int32 * a_srvr_rank)
1220 AFS_STATCNT(SRXAFSCB_GetServerPrefs);
1222 ObtainReadLock(&afs_xserver);
1224 /* Search the hash table for the server with this index */
1225 *a_srvr_addr = 0xffffffff;
1226 *a_srvr_rank = 0xffffffff;
1227 for (i = 0, j = 0; j < NSERVERS && i <= a_index; j++) {
1228 for (sa = afs_srvAddrs[j]; sa && i <= a_index; sa = sa->next_bkt, i++) {
1230 *a_srvr_addr = ntohl(sa->sa_ip);
1231 *a_srvr_rank = sa->sa_iprank;
1236 ReleaseReadLock(&afs_xserver);
1244 /*------------------------------------------------------------------------
1245 * EXPORTED SRXAFSCB_GetCellServDB
1248 * Routine to list cells configured for this client
1251 * a_call : Ptr to Rx call on which this request came in.
1252 * a_index : Input cell index
1253 * a_name : Output cell name ("" on last cell)
1254 * a_hosts : Output cell database servers in host byte order.
1260 * Nothing interesting.
1264 *------------------------------------------------------------------------*/
1267 SRXAFSCB_GetCellServDB(struct rx_call *a_call, afs_int32 a_index,
1268 char **a_name, serverList * a_hosts)
1272 char *t_name, *p_name = NULL;
1275 AFS_STATCNT(SRXAFSCB_GetCellServDB);
1277 tcell = afs_GetCellByIndex(a_index, READ_LOCK);
1281 a_hosts->serverList_val = 0;
1282 a_hosts->serverList_len = 0;
1284 p_name = tcell->cellName;
1285 for (j = 0; j < AFSMAXCELLHOSTS && tcell->cellHosts[j]; j++);
1287 a_hosts->serverList_val = afs_osi_Alloc(j * sizeof(afs_int32));
1288 osi_Assert(a_hosts->serverList_val != NULL);
1289 a_hosts->serverList_len = j;
1290 for (j = 0; j < AFSMAXCELLHOSTS && tcell->cellHosts[j]; j++)
1291 a_hosts->serverList_val[j] =
1292 ntohl(tcell->cellHosts[j]->addr->sa_ip);
1293 afs_PutCell(tcell, READ_LOCK);
1296 t_name = afs_osi_Alloc(i + 1);
1297 if (t_name == NULL) {
1299 afs_osi_Free(a_hosts->serverList_val, (j * sizeof(afs_int32)));
1306 memcpy(t_name, p_name, i);
1315 /*------------------------------------------------------------------------
1316 * EXPORTED SRXAFSCB_GetLocalCell
1319 * Routine to return name of client's local cell
1322 * a_call : Ptr to Rx call on which this request came in.
1323 * a_name : Output cell name
1329 * Nothing interesting.
1333 *------------------------------------------------------------------------*/
1336 SRXAFSCB_GetLocalCell(struct rx_call *a_call, char **a_name)
1340 char *t_name, *p_name = NULL;
1343 AFS_STATCNT(SRXAFSCB_GetLocalCell);
1345 /* Search the list for the primary cell. Cell number 1 is only
1346 * the primary cell is when no other cell is explicitly marked as
1347 * the primary cell. */
1348 tcell = afs_GetPrimaryCell(READ_LOCK);
1350 p_name = tcell->cellName;
1352 plen = strlen(p_name);
1355 t_name = afs_osi_Alloc(plen + 1);
1356 if (t_name == NULL) {
1358 afs_PutCell(tcell, READ_LOCK);
1363 t_name[plen] = '\0';
1365 memcpy(t_name, p_name, plen);
1371 afs_PutCell(tcell, READ_LOCK);
1377 * afs_MarshallCacheConfig - marshall client cache configuration
1381 * IN callerVersion - the rpc stat version of the caller.
1383 * IN config - client cache configuration.
1385 * OUT ptr - buffer where configuration is marshalled.
1392 afs_MarshallCacheConfig(afs_uint32 callerVersion, cm_initparams_v1 * config,
1395 AFS_STATCNT(afs_MarshallCacheConfig);
1397 * We currently only support version 1.
1399 *(ptr++) = config->nChunkFiles;
1400 *(ptr++) = config->nStatCaches;
1401 *(ptr++) = config->nDataCaches;
1402 *(ptr++) = config->nVolumeCaches;
1403 *(ptr++) = config->firstChunkSize;
1404 *(ptr++) = config->otherChunkSize;
1405 *(ptr++) = config->cacheSize;
1406 *(ptr++) = config->setTime;
1407 *(ptr++) = config->memCache;
1411 /*------------------------------------------------------------------------
1412 * EXPORTED SRXAFSCB_GetCacheConfig
1415 * Routine to return parameters used to initialize client cache.
1416 * Client may request any format version. Server may not return
1417 * format version greater than version requested by client.
1420 * a_call: Ptr to Rx call on which this request came in.
1421 * callerVersion: Data format version desired by the client.
1422 * serverVersion: Data format version of output data.
1423 * configCount: Number bytes allocated for output data.
1424 * config: Client cache configuration.
1430 * Nothing interesting.
1434 *------------------------------------------------------------------------*/
1437 SRXAFSCB_GetCacheConfig(struct rx_call *a_call, afs_uint32 callerVersion,
1438 afs_uint32 * serverVersion, afs_uint32 * configCount,
1439 cacheConfig * config)
1441 afs_uint32 *t_config;
1443 cm_initparams_v1 cm_config;
1446 AFS_STATCNT(SRXAFSCB_GetCacheConfig);
1449 * Currently only support version 1
1451 allocsize = sizeof(cm_initparams_v1);
1452 t_config = afs_osi_Alloc(allocsize);
1453 if (t_config == NULL) {
1458 cm_config.nChunkFiles = cm_initParams.cmi_nChunkFiles;
1459 cm_config.nStatCaches = cm_initParams.cmi_nStatCaches;
1460 cm_config.nDataCaches = cm_initParams.cmi_nDataCaches;
1461 cm_config.nVolumeCaches = cm_initParams.cmi_nVolumeCaches;
1462 cm_config.firstChunkSize = cm_initParams.cmi_firstChunkSize;
1463 cm_config.otherChunkSize = cm_initParams.cmi_otherChunkSize;
1464 cm_config.cacheSize = cm_initParams.cmi_cacheSize;
1465 cm_config.setTime = cm_initParams.cmi_setTime;
1466 cm_config.memCache = cm_initParams.cmi_memCache;
1468 afs_MarshallCacheConfig(callerVersion, &cm_config, t_config);
1470 *serverVersion = AFS_CLIENT_RETRIEVAL_FIRST_EDITION;
1471 *configCount = allocsize;
1472 config->cacheConfig_val = t_config;
1473 config->cacheConfig_len = allocsize / sizeof(afs_uint32);
1480 /*------------------------------------------------------------------------
1481 * EXPORTED SRXAFSCB_FetchData
1484 * Routine to do third party move from a remioserver to the original
1485 * issuer of an ArchiveData request. Presently supported only by the
1486 * "fs" command, not by the AFS client.
1489 * rxcall: Ptr to Rx call on which this request came in.
1490 * Fid: pointer to AFSFid structure.
1491 * Fd: File descriptor inside fs command.
1492 * Position: Offset in the file.
1493 * Length: Data length to transfer.
1494 * TotalLength: Pointer to total file length field
1500 * Nothing interesting.
1503 *------------------------------------------------------------------------*/
1505 SRXAFSCB_FetchData(struct rx_call *rxcall, struct AFSFid *Fid, afs_int32 Fd,
1506 afs_int64 Position, afs_int64 Length,
1507 afs_int64 * TotalLength)
1512 /*------------------------------------------------------------------------
1513 * EXPORTED SRXAFSCB_StoreData
1516 * Routine to do third party move from a remioserver to the original
1517 * issuer of a RetrieveData request. Presently supported only by the
1518 * "fs" command, not by the AFS client.
1521 * rxcall: Ptr to Rx call on which this request came in.
1522 * Fid: pointer to AFSFid structure.
1523 * Fd: File descriptor inside fs command.
1524 * Position: Offset in the file.
1525 * Length: Data length to transfer.
1526 * TotalLength: Pointer to total file length field
1532 * Nothing interesting.
1536 *------------------------------------------------------------------------*/
1538 SRXAFSCB_StoreData(struct rx_call *rxcall, struct AFSFid *Fid, afs_int32 Fd,
1539 afs_int64 Position, afs_int64 Length,
1540 afs_int64 * TotalLength)
1545 /*------------------------------------------------------------------------
1546 * EXPORTED SRXAFSCB_GetCellByNum
1549 * Routine to get information about a cell specified by its
1550 * cell number (returned by GetCE/GetCE64).
1553 * a_call : Ptr to Rx call on which this request came in.
1554 * a_cellnum : Input cell number
1555 * a_name : Output cell name (one zero byte when no such cell).
1556 * a_hosts : Output cell database servers in host byte order.
1562 * Nothing interesting.
1566 *------------------------------------------------------------------------*/
1569 SRXAFSCB_GetCellByNum(struct rx_call *a_call, afs_int32 a_cellnum,
1570 char **a_name, serverList * a_hosts)
1576 AFS_STATCNT(SRXAFSCB_GetCellByNum);
1578 a_hosts->serverList_val = 0;
1579 a_hosts->serverList_len = 0;
1581 tcell = afs_GetCellStale(a_cellnum, READ_LOCK);
1583 *a_name = afs_strdup("");
1588 ObtainReadLock(&tcell->lock);
1589 *a_name = afs_strdup(tcell->cellName);
1591 for (sn = 0; sn < AFSMAXCELLHOSTS && tcell->cellHosts[sn]; sn++);
1592 a_hosts->serverList_len = sn;
1593 a_hosts->serverList_val = afs_osi_Alloc(sn * sizeof(afs_int32));
1594 osi_Assert(a_hosts->serverList_val != NULL);
1596 for (i = 0; i < sn; i++)
1597 a_hosts->serverList_val[i] = ntohl(tcell->cellHosts[i]->addr->sa_ip);
1598 ReleaseReadLock(&tcell->lock);
1599 afs_PutCell(tcell, READ_LOCK);
1606 SRXAFSCB_TellMeAboutYourself(struct rx_call *a_call,
1607 struct interfaceAddr *addr,
1608 Capabilities * capabilities)
1612 afs_uint32 *dataBuffP;
1613 afs_int32 dataBytes;
1617 AFS_STATCNT(SRXAFSCB_WhoAreYou);
1619 ObtainReadLock(&afs_xinterface);
1621 /* return all network interface addresses */
1622 memset(addr, 0, sizeof(*addr));
1623 addr->numberOfInterfaces = afs_cb_interface.numberOfInterfaces;
1624 addr->uuid = afs_cb_interface.uuid;
1625 for (i = 0; i < afs_cb_interface.numberOfInterfaces; i++) {
1626 addr->addr_in[i] = ntohl(afs_cb_interface.addr_in[i]);
1627 addr->subnetmask[i] = ntohl(afs_cb_interface.subnetmask[i]);
1628 addr->mtu[i] = ntohl(afs_cb_interface.mtu[i]);
1631 ReleaseReadLock(&afs_xinterface);
1635 dataBytes = 1 * sizeof(afs_uint32);
1636 dataBuffP = afs_osi_Alloc(dataBytes);
1637 osi_Assert(dataBuffP != NULL);
1638 dataBuffP[0] = CLIENT_CAPABILITY_ERRORTRANS;
1639 capabilities->Capabilities_len = dataBytes / sizeof(afs_uint32);
1640 capabilities->Capabilities_val = dataBuffP;
1646 #if 0 && defined(AFS_LINUX24_ENV)
1647 extern struct vcache *afs_globalVp;
1649 int recurse_dcache_parent(parent, a_index, addr, inode, flags, time, fileName)
1650 struct dentry * parent;
1658 struct dentry *this_parent = parent;
1659 struct list_head *next;
1661 struct dentry *dentry;
1664 next = this_parent->d_subdirs.next;
1666 while (next != &this_parent->d_subdirs) {
1667 struct list_head *tmp = next;
1668 dentry = list_entry(tmp, struct dentry, d_child);
1674 * Descend a level if the d_subdirs list is non-empty.
1676 if (!list_empty(&dentry->d_subdirs)) {
1677 this_parent = dentry;
1682 * All done at this level ... ascend and resume the search.
1684 if (this_parent != parent) {
1685 next = this_parent->d_child.next;
1686 this_parent = this_parent->d_parent;
1692 if (d_unhashed(dentry))
1697 *fileName = afs_strdup(dentry->d_name.name?dentry->d_name.name:"");
1698 *inode = ITOAFS(dentry->d_inode);
1699 *addr = atomic_read(&(dentry)->d_count);
1700 *time = dentry->d_time;
1709 SRXAFSCB_GetDE(struct rx_call *a_call, afs_int32 a_index, afs_int32 *addr,
1710 afs_int32 *inode, afs_int32 *flags, afs_int32 *time,
1712 { /*SRXAFSCB_GetDE*/
1713 int code = 0; /*Return code*/
1714 #if 0 && defined(AFS_LINUX24_ENV)
1715 int i; /*Loop variable*/
1716 struct vcache *tvc = afs_globalVp;
1717 struct dentry *dentry;
1718 struct list_head *cur, *head = &(AFSTOI(tvc))->i_dentry;
1720 #ifdef RX_ENABLE_LOCKS
1722 #endif /* RX_ENABLE_LOCKS */
1724 #if defined(AFS_LINUX24_ENV)
1725 spin_lock(&dcache_lock);
1729 while ((cur = cur->next) != head) {
1730 dentry = list_entry(cur, struct dentry, d_alias);
1732 dget_locked(dentry);
1734 #if defined(AFS_LINUX24_ENV)
1735 spin_unlock(&dcache_lock);
1741 if (recurse_dcache_parent(dentry, a_index, addr, inode, flags, time, fileName) == 0) {
1752 *fileName = afs_strdup("");
1756 if (d_unhashed(dentry))
1761 *fileName = afs_strdup(dentry->d_name.name?dentry->d_name.name:"");
1762 *inode = ITOAFS(dentry->d_inode);
1763 *addr = atomic_read(&(dentry)->d_count);
1764 *time = dentry->d_time;
1771 #ifdef RX_ENABLE_LOCKS
1773 #endif /* RX_ENABLE_LOCKS */
1777 } /*SRXAFSCB_GetDE*/