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
11 * --------------------- Required definitions ---------------------
13 #include <afsconfig.h>
14 #include "../afs/param.h"
18 #include "../afs/sysincludes.h" /*Standard vendor system headers*/
19 #include "../afs/afsincludes.h" /*AFS-based standard headers*/
20 #include "../afs/afs_stats.h" /* statistics */
21 #include "../afs/afs_cbqueue.h"
22 #include "../afs/afs_osidnlc.h"
26 /* Imported variables */
27 extern afs_rwlock_t afs_xserver;
28 extern afs_rwlock_t afs_xdcache;
29 extern afs_rwlock_t afs_xcbhash;
30 extern afs_lock_t afs_ftf;
31 extern struct server *afs_servers[NSERVERS];
32 extern afs_int32 afs_dhashsize;
33 extern afs_int32 *afs_dvhashTbl;
34 extern unsigned char *afs_indexFlags; /*(only one) Is there data there?*/
35 extern int cacheDiskType;
37 afs_uint32 afs_stampValue=0;
43 * Send a truncation request to a FileServer.
49 * We're write-locked upon entry.
52 int afs_StoreMini(avc, areq)
53 register struct vcache *avc;
54 struct vrequest *areq;
57 register struct conn *tc;
58 struct AFSStoreStatus InStatus;
59 struct AFSFetchStatus OutStatus;
60 struct AFSVolSync tsync;
61 register afs_int32 code;
62 register struct rx_call *tcall;
63 afs_size_t tlen, base = 0;
66 AFS_STATCNT(afs_StoreMini);
67 afs_Trace2(afs_iclSetp, CM_TRACE_STOREMINI, ICL_TYPE_POINTER, avc,
68 ICL_TYPE_INT32, avc->m.Length);
70 if (avc->truncPos < tlen) tlen = avc->truncPos;
71 avc->truncPos = AFS_NOTRUNC;
72 avc->states &= ~CExtendedFile;
75 tc = afs_Conn(&avc->fid, areq, SHARED_LOCK);
77 #ifdef RX_ENABLE_LOCKS
79 #endif /* RX_ENABLE_LOCKS */
81 tcall = rx_NewCall(tc->id);
82 #ifdef RX_ENABLE_LOCKS
84 #endif /* RX_ENABLE_LOCKS */
85 /* Set the client mod time since we always want the file
86 * to have the client's mod time and not the server's one
87 * (to avoid problems with make, etc.) It almost always
88 * works fine with standard afs because them server/client
89 * times are in sync and more importantly this storemini
90 * it's a special call that would typically be followed by
91 * the proper store-data or store-status calls.
93 InStatus.Mask = AFS_SETMODTIME;
94 InStatus.ClientModTime = avc->m.Date;
95 XSTATS_START_TIME(AFS_STATS_FS_RPCIDX_STOREDATA);
96 afs_Trace4(afs_iclSetp, CM_TRACE_STOREDATA64,
97 ICL_TYPE_FID, &avc->fid.Fid,
98 ICL_TYPE_OFFSET, ICL_HANDLE_OFFSET(base),
99 ICL_TYPE_OFFSET, ICL_HANDLE_OFFSET(tlen),
100 ICL_TYPE_OFFSET, ICL_HANDLE_OFFSET(avc->m.Length));
101 #ifdef RX_ENABLE_LOCKS
103 #endif /* RX_ENABLE_LOCKS */
104 #ifdef AFS_64BIT_CLIENT
105 if (!afs_serverHasNo64Bit(tc)) {
106 code = StartRXAFS_StoreData64(tcall,
107 (struct AFSFid *)&avc->fid.Fid,
108 &InStatus, avc->m.Length,
114 code = StartRXAFS_StoreData(tcall,
115 (struct AFSFid *)&avc->fid.Fid,
116 &InStatus, l1, 0, l2);
118 #else /* AFS_64BIT_CLIENT */
119 code = StartRXAFS_StoreData(tcall,
120 (struct AFSFid *)&avc->fid.Fid,
121 &InStatus, avc->m.Length, 0, tlen);
122 #endif /* AFS_64BIT_CLIENT */
124 code = EndRXAFS_StoreData(tcall, &OutStatus, &tsync);
125 #ifdef AFS_64BIT_CLIENT
126 if (code == RXGEN_OPCODE) {
127 afs_serverSetNo64Bit(tc);
128 code = rx_EndCall(tcall, code);
131 #endif /* AFS_64BIT_CLIENT */
133 code = rx_EndCall(tcall, code);
134 #ifdef RX_ENABLE_LOCKS
136 #endif /* RX_ENABLE_LOCKS */
141 (afs_Analyze(tc, code, &avc->fid, areq,
142 AFS_STATS_FS_RPCIDX_STOREDATA,
143 SHARED_LOCK, (struct cell *)0));
146 afs_ProcessFS(avc, &OutStatus, areq);
150 afs_InvalidateAllSegments(avc, 1);
156 unsigned int storeallmissing = 0;
157 #define lmin(a,b) (((a) < (b)) ? (a) : (b))
159 * afs_StoreAllSegments
162 * Stores all modified segments back to server
165 * avc : Pointer to vcache entry.
166 * areq : Pointer to request structure.
169 * Called with avc write-locked.
171 #if defined (AFS_HPUX_ENV) || defined(AFS_ULTRIX_ENV)
172 int NCHUNKSATONCE = 3;
174 int NCHUNKSATONCE = 64 ;
179 afs_StoreAllSegments(avc, areq, sync)
180 register struct vcache *avc;
181 struct vrequest *areq;
184 { /*afs_StoreAllSegments*/
185 register struct dcache *tdc;
186 register afs_int32 code=0;
187 register afs_int32 index;
188 register afs_int32 origCBs, foreign=0;
190 afs_hyper_t newDV, oldDV; /* DV when we start, and finish, respectively */
191 struct dcache **dcList, **dclist;
192 unsigned int i, j, minj, maxj, moredata, high, off;
194 afs_size_t maxStoredLength; /* highest offset we've written to server. */
197 struct afs_stats_xferData *xferP; /* Ptr to this op's xfer struct */
198 osi_timeval_t xferStartTime, /*FS xfer start time*/
199 xferStopTime; /*FS xfer stop time*/
200 afs_size_t bytesToXfer; /* # bytes to xfer*/
201 afs_size_t bytesXferred; /* # bytes actually xferred*/
202 #endif /* AFS_NOSTATS */
205 AFS_STATCNT(afs_StoreAllSegments);
207 hset(oldDV, avc->m.DataVersion);
208 hset(newDV, avc->m.DataVersion);
209 hash = DVHash(&avc->fid);
210 foreign = (avc->states & CForeign);
211 dcList = (struct dcache **) osi_AllocLargeSpace(AFS_LRALLOCSIZ);
212 afs_Trace2(afs_iclSetp, CM_TRACE_STOREALL, ICL_TYPE_POINTER, avc,
213 ICL_TYPE_OFFSET, ICL_HANDLE_OFFSET(avc->m.Length));
214 #if !defined(AFS_AIX32_ENV) && !defined(AFS_SGI65_ENV)
215 /* In the aix vm implementation we need to do the vm_writep even
216 * on the memcache case since that's we adjust the file's size
217 * and finish flushing partial vm pages.
219 if (cacheDiskType != AFS_FCACHE_TYPE_MEM)
220 #endif /* !AFS_AIX32_ENV && !AFS_SGI65_ENV */
222 /* If we're not diskless, reading a file may stress the VM
223 * system enough to cause a pageout, and this vnode would be
224 * locked when the pageout occurs. We can prevent this problem
225 * by making sure all dirty pages are already flushed. We don't
226 * do this when diskless because reading a diskless (i.e.
227 * memory-resident) chunk doesn't require using new VM, and we
228 * also don't want to dump more dirty data into a diskless cache,
229 * since they're smaller, and we might exceed its available
232 #if defined(AFS_SUN5_ENV)
233 if ( sync & AFS_VMSYNC_INVAL) /* invalidate VM pages */
234 osi_VM_TryToSmush(avc, CRED() , 1 );
237 osi_VM_StoreAllSegments(avc);
240 ConvertWToSLock(&avc->lock);
243 * Subsequent code expects a sorted list, and it expects all the
244 * chunks in the list to be contiguous, so we need a sort and a
245 * while loop in here, too - but this will work for a first pass...
246 * 92.10.05 - OK, there's a sort in here now. It's kind of a modified
247 * bin sort, I guess. Chunk numbers start with 0
249 * - Have to get a write lock on xdcache because GetDSlot might need it (if
250 * the chunk doesn't have a dcache struct).
251 * This seems like overkill in most cases.
252 * - I'm not sure that it's safe to do "index = .hvNextp", then unlock
253 * xdcache, then relock xdcache and try to use index. It is done
254 * a lot elsewhere in the CM, but I'm not buying that argument.
255 * - should be able to check IFDataMod without doing the GetDSlot (just
256 * hold afs_xdcache). That way, it's easy to do this without the
257 * writelock on afs_xdcache, and we save unneccessary disk
258 * operations. I don't think that works, 'cuz the next pointers
261 origCBs = afs_allCBs;
265 tlen = avc->m.Length;
269 memset((char *)dcList, 0, NCHUNKSATONCE * sizeof(struct dcache *));
273 /* lock and start over from beginning of hash chain
274 * in order to avoid a race condition. */
275 MObtainWriteLock(&afs_xdcache,284);
276 index = afs_dvhashTbl[hash];
278 for(j=0; index != NULLIDX;) {
279 if ((afs_indexFlags[index] & IFDataMod) &&
280 (afs_indexUnique[index] == avc->fid.Fid.Unique)) {
281 tdc = afs_GetDSlot(index, 0); /* refcount+1. */
282 if (!FidCmp( &tdc->f.fid, &avc->fid ) && tdc->f.chunk >= minj ) {
283 off = tdc->f.chunk - minj;
284 if (off < NCHUNKSATONCE) {
286 osi_Panic("dclist slot already in use!");
290 tlen -= tdc->f.chunkBytes; /* shortcut: big win for little files */
296 lockedPutDCache(tdc);
297 if (j == NCHUNKSATONCE)
301 lockedPutDCache(tdc);
304 index = afs_dvnextTbl[index];
307 MReleaseWriteLock(&afs_xdcache);
308 /* this guy writes chunks, puts back dcache structs, and bumps newDV */
309 /* "moredata" just says "there are more dirty chunks yet to come".
312 static afs_uint32 lp1 = 10000, lp2 = 10000;
313 struct AFSStoreStatus InStatus;
314 afs_size_t base, bytes;
320 struct osi_file * tfile;
321 struct rx_call * tcall;
322 extern int afs_defaultAsynchrony;
325 for (bytes = 0, j = 0; !code && j<=high; j++) {
329 bytes += dcList[j]->f.chunkBytes;
330 if ((dcList[j]->f.chunkBytes < afs_OtherCSize)
331 && (dcList[j]->f.chunk - minj < high)
333 int sbytes = afs_OtherCSize - dcList[j]->f.chunkBytes;
340 if (bytes && (j==high || !dcList[j+1])) {
341 /* base = AFS_CHUNKTOBASE(dcList[first]->f.chunk); */
342 base = AFS_CHUNKTOBASE(first + minj) ;
345 * take a list of dcache structs and send them all off to the server
346 * the list must be in order, and the chunks contiguous.
347 * Note - there is no locking done by this code currently. For
348 * safety's sake, xdcache could be locked over the entire call.
349 * However, that pretty well ties up all the threads. Meantime, all
350 * the chunks _MUST_ have their refcounts bumped.
351 * The writes done before a store back will clear setuid-ness
353 * We can permit CacheStoreProc to wake up the user process IFF we
354 * are doing the last RPC for this close, ie, storing back the last
355 * set of contiguous chunks of a file.
358 dclist = &dcList[first];
360 nomore = !(moredata || (j!=high));
361 InStatus.ClientModTime = avc->m.Date;
362 InStatus.Mask = AFS_SETMODTIME;
363 if (sync & AFS_SYNC) {
364 InStatus.Mask |= AFS_FSYNC;
366 tlen = lmin(avc->m.Length, avc->truncPos);
367 afs_Trace4(afs_iclSetp, CM_TRACE_STOREDATA64,
368 ICL_TYPE_FID, &avc->fid.Fid,
369 ICL_TYPE_OFFSET, ICL_HANDLE_OFFSET(base),
370 ICL_TYPE_OFFSET, ICL_HANDLE_OFFSET(bytes),
371 ICL_TYPE_OFFSET, ICL_HANDLE_OFFSET(tlen));
375 tc = afs_Conn(&avc->fid, areq);
378 #ifdef RX_ENABLE_LOCKS
380 #endif /* RX_ENABLE_LOCKS */
381 tcall = rx_NewCall(tc->id);
382 #ifdef AFS_64BIT_CLIENT
383 if (!afs_serverHasNo64Bit(tc)) {
384 code = StartRXAFS_StoreData64(tcall,
385 (struct AFSFid *) &avc->fid.Fid,
386 &InStatus, base, bytes, tlen);
388 if (tlen > 0xFFFFFFFF) {
391 afs_int32 t1, t2, t3;
395 code = StartRXAFS_StoreData(tcall,
396 (struct AFSFid *) &avc->fid.Fid,
397 &InStatus, t1, t2, t3);
400 #else /* AFS_64BIT_CLIENT */
401 code = StartRXAFS_StoreData(tcall, (struct AFSFid *) &avc->fid.Fid,
402 &InStatus, base, bytes, tlen);
403 #endif /* AFS_64BIT_CLIENT */
404 #ifdef RX_ENABLE_LOCKS
406 #endif /* RX_ENABLE_LOCKS */
412 XSTATS_START_TIME(AFS_STATS_FS_RPCIDX_STOREDATA);
413 avc->truncPos = AFS_NOTRUNC;
415 for (i = 0; i<nchunks && !code;i++) {
418 afs_warn("afs: missing dcache!\n");
420 continue; /* panic? */
422 afs_Trace4(afs_iclSetp, CM_TRACE_STOREALL2,
423 ICL_TYPE_POINTER, avc,
424 ICL_TYPE_INT32, tdc->f.chunk,
425 ICL_TYPE_INT32, tdc->index,
426 ICL_TYPE_INT32, tdc->f.inode);
429 if (avc->asynchrony == -1) {
430 if (afs_defaultAsynchrony > (bytes-stored)) {
431 shouldwake = &nomore;
433 } else if ((afs_uint32)avc->asynchrony >= (bytes-stored)) {
434 shouldwake = &nomore;
437 tfile = afs_CFileOpen(tdc->f.inode);
439 xferP = &(afs_stats_cmfullperf.rpc.fsXferTimes[AFS_STATS_FS_XFERIDX_STOREDATA]);
440 osi_GetuTime(&xferStartTime);
442 code = afs_CacheStoreProc(tcall, tfile, tdc->f.chunkBytes,
443 avc, shouldwake, &bytesToXfer,
446 osi_GetuTime(&xferStopTime);
449 (xferP->numSuccesses)++;
450 afs_stats_XferSumBytes[AFS_STATS_FS_XFERIDX_STOREDATA] += bytesXferred;
451 (xferP->sumBytes) += (afs_stats_XferSumBytes[AFS_STATS_FS_XFERIDX_STOREDATA] >> 10);
452 afs_stats_XferSumBytes[AFS_STATS_FS_XFERIDX_STOREDATA] &= 0x3FF;
453 if (bytesXferred < xferP->minBytes)
454 xferP->minBytes = bytesXferred;
455 if (bytesXferred > xferP->maxBytes)
456 xferP->maxBytes = bytesXferred;
459 * Tally the size of the object. Note: we tally the actual size,
460 * NOT the number of bytes that made it out over the wire.
462 if (bytesToXfer <= AFS_STATS_MAXBYTES_BUCKET0)
465 if (bytesToXfer <= AFS_STATS_MAXBYTES_BUCKET1)
468 if (bytesToXfer <= AFS_STATS_MAXBYTES_BUCKET2)
471 if (bytesToXfer <= AFS_STATS_MAXBYTES_BUCKET3)
474 if (bytesToXfer <= AFS_STATS_MAXBYTES_BUCKET4)
477 if (bytesToXfer <= AFS_STATS_MAXBYTES_BUCKET5)
480 if (bytesToXfer <= AFS_STATS_MAXBYTES_BUCKET6)
483 if (bytesToXfer <= AFS_STATS_MAXBYTES_BUCKET7)
488 afs_stats_GetDiff(elapsedTime, xferStartTime, xferStopTime);
489 afs_stats_AddTo((xferP->sumTime), elapsedTime);
490 afs_stats_SquareAddTo((xferP->sqrTime), elapsedTime);
491 if (afs_stats_TimeLessThan(elapsedTime, (xferP->minTime))) {
492 afs_stats_TimeAssign((xferP->minTime), elapsedTime);
494 if (afs_stats_TimeGreaterThan(elapsedTime, (xferP->maxTime))) {
495 afs_stats_TimeAssign((xferP->maxTime), elapsedTime);
499 code = afs_CacheStoreProc(tcall, tfile, tdc->f.chunkBytes,
500 avc, shouldwake, &lp1, &lp2);
501 #endif /* AFS_NOSTATS */
502 afs_CFileClose(tfile);
503 #ifdef AFS_64BIT_CLIENT
504 if (code == RXGEN_OPCODE) {
505 afs_serverSetNo64Bit(tc);
508 #endif /* AFS_64BIT_CLIENT */
509 if ((tdc->f.chunkBytes < afs_OtherCSize) &&
511 int bsent, tlen, tlen1=0, sbytes = afs_OtherCSize - tdc->f.chunkBytes;
512 char *tbuffer = osi_AllocLargeSpace(AFS_LRALLOCSIZ);
515 tlen = (sbytes > AFS_LRALLOCSIZ ? AFS_LRALLOCSIZ : sbytes);
516 memset(tbuffer, 0, tlen);
517 #ifdef RX_ENABLE_LOCKS
519 #endif /* RX_ENABLE_LOCKS */
520 bsent = rx_Write(tcall, tbuffer, tlen);
521 #ifdef RX_ENABLE_LOCKS
523 #endif /* RX_ENABLE_LOCKS */
526 code = -33; /* XXX */
531 osi_FreeLargeSpace(tbuffer);
533 stored += tdc->f.chunkBytes;
535 /* ideally, I'd like to unlock the dcache and turn
536 * off the writing bit here, but that would
537 * require being able to retry StoreAllSegments in
538 * the event of a failure. It only really matters
539 * if user can't read from a 'locked' dcache or
540 * one which has the writing bit turned on. */
543 struct AFSFetchStatus OutStatus;
544 struct AFSVolSync tsync;
545 #ifdef RX_ENABLE_LOCKS
547 #endif /* RX_ENABLE_LOCKS */
548 code = EndRXAFS_StoreData(tcall, &OutStatus, &tsync);
549 #ifdef RX_ENABLE_LOCKS
551 #endif /* RX_ENABLE_LOCKS */
555 /* Now copy out return params */
556 UpgradeSToWLock(&avc->lock,28); /* keep out others for a while */
557 if (!code) { /* must wait til RPC completes to be sure of this info */
558 afs_ProcessFS(avc, &OutStatus, areq);
559 /* Keep last (max) size of file on server to see if
560 * we need to call afs_StoreMini to extend the file.
563 maxStoredLength = OutStatus.Length;
566 ConvertWToSLock(&avc->lock);
569 #ifdef RX_ENABLE_LOCKS
571 #endif /* RX_ENABLE_LOCKS */
572 code = rx_EndCall(tcall, code, avc, base);
573 #ifdef RX_ENABLE_LOCKS
575 #endif /* RX_ENABLE_LOCKS */
577 } while (afs_Analyze(tc, code, &avc->fid, areq,
578 AFS_STATS_FS_RPCIDX_STOREDATA,
579 SHARED_LOCK, (struct cell *)0));
581 /* put back all remaining locked dcache entries */
582 for (i=0; i<nchunks; i++) {
585 if (afs_indexFlags[tdc->index] & IFDataMod) {
586 afs_indexFlags[tdc->index] &= ~IFDataMod;
587 afs_stats_cmperf.cacheCurrDirtyChunks--;
588 afs_indexFlags[tdc->index] &= ~IFDirtyPages;
589 if ( sync & AFS_VMSYNC_INVAL )
591 /* since we have invalidated all the pages of this
592 ** vnode by calling osi_VM_TryToSmush, we can
593 ** safely mark this dcache entry as not having
594 ** any pages. This vnode now becomes eligible for
595 ** reclamation by getDownD.
597 afs_indexFlags[tdc->index] &= ~IFAnyPages;
601 tdc->f.states &= ~DWriting; /* correct?*/
602 tdc->flags |= DFEntryMod;
603 lockedPutDCache(tdc);
607 for (j++; j<=high; j++)
609 lockedPutDCache(dcList[j]);
612 afs_Trace2(afs_iclSetp, CM_TRACE_STOREALLDCDONE,
613 ICL_TYPE_POINTER, avc, ICL_TYPE_INT32, code);
619 minj += NCHUNKSATONCE;
620 } while ( !code && moredata );
622 UpgradeSToWLock(&avc->lock,29);
624 /* send a trivial truncation store if did nothing else */
627 * Call StoreMini if we haven't written enough data to extend the
628 * file at the fileserver to the client's notion of the file length.
630 if ((avc->truncPos != AFS_NOTRUNC) ||
631 ((avc->states & CExtendedFile) && (maxStoredLength < avc->m.Length))) {
632 code = afs_StoreMini(avc, areq);
634 hadd32(newDV, 1); /* just bumped here, too */
636 avc->states &= ~CExtendedFile;
640 * Finally, turn off DWriting, turn on DFEntryMod,
641 * update f.versionNo.
642 * A lot of this could be integrated into the loop above
647 MObtainWriteLock(&afs_xdcache,285); /* overkill, but it gets the
648 * lock in case GetDSlot needs it */
649 for(safety = 0, index = afs_dvhashTbl[hash];
650 index != NULLIDX && safety < afs_cacheFiles+2;) {
652 if (afs_indexUnique[index] == avc->fid.Fid.Unique) {
653 tdc = afs_GetDSlot(index, 0);
655 if (!FidCmp(&tdc->f.fid, &avc->fid)) {
656 /* this is the file */
657 /* was code here to clear IFDataMod, but it should only be done
658 * in storedcache and storealldcache.
660 /* Only increase DV if we had up-to-date data to start with.
661 * Otherwise, we could be falsely upgrading an old chunk
662 * (that we never read) into one labelled with the current
663 * DV #. Also note that we check that no intervening stores
664 * occurred, otherwise we might mislabel cache information
665 * for a chunk that we didn't store this time
667 /* Don't update the version number if it's not yet set. */
668 if (code == 0 && (!hsame(tdc->f.versionNo, h_unset))
669 && (hcmp(tdc->f.versionNo, oldDV) >= 0)) {
670 if ((!(afs_dvhack || foreign) && hsame(avc->m.DataVersion, newDV))
671 || ((afs_dvhack || foreign) && (origCBs == afs_allCBs)) ) {
672 /* no error, this is the DV */
673 hset(tdc->f.versionNo, avc->m.DataVersion);
674 tdc->flags |= DFEntryMod;
678 lockedPutDCache(tdc);
680 index = afs_dvnextTbl[index];
682 MReleaseWriteLock(&afs_xdcache);
687 * Invalidate chunks after an error for ccores files since
688 * afs_inactive won't be called for these and they won't be
689 * invalidated. Also discard data if it's a permanent error from the
692 if (areq->permWriteError || (avc->states & (CCore1 | CCore))) {
693 afs_InvalidateAllSegments(avc, 1);
696 afs_Trace3(afs_iclSetp, CM_TRACE_STOREALLDONE, ICL_TYPE_POINTER, avc,
697 ICL_TYPE_INT32, avc->m.Length, ICL_TYPE_INT32, code);
698 /* would like a Trace5, but it doesn't exist...*/
699 afs_Trace3(afs_iclSetp, CM_TRACE_AVCLOCKER, ICL_TYPE_POINTER, avc,
700 ICL_TYPE_INT32, avc->lock.wait_states,
701 ICL_TYPE_INT32, avc->lock.excl_locked);
702 afs_Trace4(afs_iclSetp, CM_TRACE_AVCLOCKEE, ICL_TYPE_POINTER, avc,
703 ICL_TYPE_INT32, avc->lock.wait_states,
704 ICL_TYPE_INT32, avc->lock.readers_reading,
705 ICL_TYPE_INT32, avc->lock.num_waiting );
708 * Finally, if updated DataVersion matches newDV, we did all of the
709 * stores. If mapDV indicates that the page cache was flushed up
710 * to when we started the store, then we can relabel them as flushed
711 * as recently as newDV.
712 * Turn off CDirty bit because the stored data is now in sync with server.
714 if (code == 0 && hcmp(avc->mapDV, oldDV) >= 0) {
715 if ((!(afs_dvhack || foreign) && hsame(avc->m.DataVersion, newDV))
716 || ((afs_dvhack || foreign) && (origCBs == afs_allCBs)) ) {
717 hset(avc->mapDV, newDV);
718 avc->states &= ~CDirty;
721 osi_FreeLargeSpace(dcList);
723 /* If not the final write a temporary error is ok. */
724 if (code && !areq->permWriteError && !(sync & AFS_LASTSTORE))
729 } /*afs_StoreAllSegments (new 03/02/94)*/
733 * afs_InvalidateAllSegments
736 * Invalidates all chunks for a given file
739 * avc : Pointer to vcache entry.
740 * asetLock : If true, we are to set the afs_xdcache lock; otherwise,
741 * the caller has already done it.
744 * For example, called after an error has been detected. Called
745 * with avc write-locked.
748 afs_InvalidateAllSegments(avc, asetLock)
752 { /*afs_InvalidateAllSegments*/
758 AFS_STATCNT(afs_InvalidateAllSegments);
759 afs_Trace2(afs_iclSetp, CM_TRACE_INVALL, ICL_TYPE_POINTER, avc,
760 ICL_TYPE_OFFSET, ICL_HANDLE_OFFSET(avc->m.Length));
761 hash = DVHash(&avc->fid);
762 avc->truncPos = AFS_NOTRUNC; /* don't truncate later */
763 avc->states &= ~CExtendedFile; /* not any more */
764 ObtainWriteLock(&afs_xcbhash, 459);
765 afs_DequeueCallback(avc);
766 avc->states &= ~(CStatd|CDirty); /* mark status information as bad, too */
767 ReleaseWriteLock(&afs_xcbhash);
768 if (avc->fid.Fid.Vnode & 1 || (vType(avc) == VDIR))
769 osi_dnlc_purgedp(avc);
770 /* Blow away pages; for now, only for Solaris */
771 #if (defined(AFS_SUN5_ENV))
772 if (WriteLocked(&avc->lock))
773 osi_ReleaseVM(avc, (struct AFS_UCRED *)0);
776 * Block out others from screwing with this table; is a read lock
779 if (asetLock) MObtainWriteLock(&afs_xdcache,286);
780 for(index = afs_dvhashTbl[hash]; index != NULLIDX;) {
781 if (afs_indexUnique[index] == avc->fid.Fid.Unique) {
782 tdc = afs_GetDSlot(index, 0);
783 if (!FidCmp(&tdc->f.fid, &avc->fid)) {
784 /* same file? we'll zap it */
785 if (afs_indexFlags[index] & IFDataMod) {
786 afs_stats_cmperf.cacheCurrDirtyChunks--;
787 /* don't write it back */
788 afs_indexFlags[index] &= ~IFDataMod;
790 afs_indexFlags[index] &= ~IFAnyPages;
792 if (vType(avc) == VDIR) {
796 lockedPutDCache(tdc);
798 index = afs_dvnextTbl[index];
800 if (asetLock) MReleaseWriteLock(&afs_xdcache);
803 } /*afs_InvalidateAllSegments*/
807 * afs_TruncateAllSegments
810 * Truncate a cache file.
813 * avc : Ptr to vcache entry to truncate.
814 * alen : Number of bytes to make the file.
815 * areq : Ptr to request structure.
818 * Called with avc write-locked; in VFS40 systems, pvnLock is also
821 afs_TruncateAllSegments(avc, alen, areq, acred)
823 register struct vcache *avc;
824 struct vrequest *areq;
825 struct AFS_UCRED *acred;
826 { /*afs_TruncateAllSegments*/
828 register struct dcache *tdc;
829 register afs_int32 code;
830 register afs_int32 index;
833 AFS_STATCNT(afs_TruncateAllSegments);
834 avc->m.Date = osi_Time();
835 afs_Trace3(afs_iclSetp, CM_TRACE_TRUNCALL, ICL_TYPE_POINTER, avc,
836 ICL_TYPE_OFFSET, ICL_HANDLE_OFFSET(avc->m.Length),
837 ICL_TYPE_OFFSET, ICL_HANDLE_OFFSET(alen));
838 if (alen >= avc->m.Length) {
840 * Special speedup since Sun's vm extends the file this way;
841 * we've never written to the file thus we can just set the new
842 * length and avoid the needless calls below.
843 * Also used for ftruncate calls which can extend the file.
844 * To completely minimize the possible extra StoreMini RPC, we really
845 * should keep the ExtendedPos as well and clear this flag if we
846 * truncate below that value before we store the file back.
848 avc->states |= CExtendedFile;
849 avc->m.Length = alen;
853 #if (defined(AFS_SUN5_ENV))
855 /* Zero unused portion of last page */
856 osi_VM_PreTruncate(avc, alen, acred);
860 #if (defined(AFS_SUN5_ENV))
861 ObtainWriteLock(&avc->vlock, 546);
862 avc->activeV++; /* Block new getpages */
863 ReleaseWriteLock(&avc->vlock);
866 ReleaseWriteLock(&avc->lock);
869 /* Flush pages beyond end-of-file. */
870 osi_VM_Truncate(avc, alen, acred);
873 ObtainWriteLock(&avc->lock,79);
875 avc->m.Length = alen;
877 if (alen < avc->truncPos) avc->truncPos = alen;
878 code = DVHash(&avc->fid);
879 /* block out others from screwing with this table */
880 MObtainWriteLock(&afs_xdcache,287);
881 for(index = afs_dvhashTbl[code]; index != NULLIDX;) {
882 if (afs_indexUnique[index] == avc->fid.Fid.Unique) {
883 tdc = afs_GetDSlot(index, 0);
884 if (!FidCmp(&tdc->f.fid, &avc->fid)) {
885 /* same file, and modified, we'll store it back */
886 newSize = alen - AFS_CHUNKTOBASE(tdc->f.chunk);
887 if (newSize < 0) newSize = 0;
888 if (newSize < tdc->f.chunkBytes) {
889 register struct osi_file *tfile;
890 tfile = afs_CFileOpen(tdc->f.inode);
891 afs_CFileTruncate(tfile, newSize);
892 afs_CFileClose(tfile);
893 afs_AdjustSize(tdc, newSize);
896 lockedPutDCache(tdc);
898 index = afs_dvnextTbl[index];
900 #if (defined(AFS_SUN5_ENV))
901 ObtainWriteLock(&avc->vlock, 547);
902 if (--avc->activeV == 0 && (avc->vstates & VRevokeWait)) {
903 avc->vstates &= ~VRevokeWait;
904 afs_osi_Wakeup((char *)&avc->vstates);
906 ReleaseWriteLock(&avc->vlock);
908 MReleaseWriteLock(&afs_xdcache);
911 } /*afs_TruncateAllSegments*/