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
10 #include <afsconfig.h>
11 #include "afs/param.h"
13 #include "afs/sysincludes.h" /* Standard vendor system headers */
14 #ifndef AFS_LINUX22_ENV
15 #include "rpc/types.h"
23 #endif /* AFS_ALPHA_ENV */
24 #include "afsincludes.h" /* Afs-based standard headers */
25 #include "afs/afs_stats.h" /* statistics */
26 #include "afs_prototypes.h"
28 extern int cacheDiskType;
33 FillStoreStats(int code, int idx, osi_timeval_t *xferStartTime,
34 afs_size_t bytesToXfer, afs_size_t bytesXferred)
36 struct afs_stats_xferData *xferP;
37 osi_timeval_t xferStopTime;
40 xferP = &(afs_stats_cmfullperf.rpc.fsXferTimes[idx]);
41 osi_GetuTime(&xferStopTime);
44 (xferP->numSuccesses)++;
45 afs_stats_XferSumBytes[idx] += bytesXferred;
46 (xferP->sumBytes) += (afs_stats_XferSumBytes[idx] >> 10);
47 afs_stats_XferSumBytes[idx] &= 0x3FF;
48 if (bytesXferred < xferP->minBytes)
49 xferP->minBytes = bytesXferred;
50 if (bytesXferred > xferP->maxBytes)
51 xferP->maxBytes = bytesXferred;
54 * Tally the size of the object. Note: we tally the actual size,
55 * NOT the number of bytes that made it out over the wire.
57 if (bytesToXfer <= AFS_STATS_MAXBYTES_BUCKET0) (xferP->count[0])++;
58 else if (bytesToXfer <= AFS_STATS_MAXBYTES_BUCKET1) (xferP->count[1])++;
59 else if (bytesToXfer <= AFS_STATS_MAXBYTES_BUCKET2) (xferP->count[2])++;
60 else if (bytesToXfer <= AFS_STATS_MAXBYTES_BUCKET3) (xferP->count[3])++;
61 else if (bytesToXfer <= AFS_STATS_MAXBYTES_BUCKET4) (xferP->count[4])++;
62 else if (bytesToXfer <= AFS_STATS_MAXBYTES_BUCKET5) (xferP->count[5])++;
63 else if (bytesToXfer <= AFS_STATS_MAXBYTES_BUCKET6) (xferP->count[6])++;
64 else if (bytesToXfer <= AFS_STATS_MAXBYTES_BUCKET7) (xferP->count[7])++;
68 afs_stats_GetDiff(elapsedTime, (*xferStartTime), xferStopTime);
69 afs_stats_AddTo((xferP->sumTime), elapsedTime);
70 afs_stats_SquareAddTo((xferP->sqrTime), elapsedTime);
71 if (afs_stats_TimeLessThan(elapsedTime, (xferP->minTime))) {
72 afs_stats_TimeAssign((xferP->minTime), elapsedTime);
74 if (afs_stats_TimeGreaterThan(elapsedTime, (xferP->maxTime))) {
75 afs_stats_TimeAssign((xferP->maxTime), elapsedTime);
79 #endif /* AFS_NOSTATS */
81 /* rock and operations for RX_FILESERVER */
83 struct rxfs_storeVariables {
89 struct AFSStoreStatus InStatus;
93 rxfs_storeUfsPrepare(void *r, afs_uint32 size, afs_uint32 *tlen)
95 *tlen = (size > AFS_LRALLOCSIZ ? AFS_LRALLOCSIZ : size);
100 rxfs_storeMemPrepare(void *r, afs_uint32 size, afs_uint32 *tlen)
103 struct rxfs_storeVariables *v = (struct rxfs_storeVariables *) r;
105 *tlen = (size > AFS_LRALLOCSIZ ? AFS_LRALLOCSIZ : size);
107 code = rx_WritevAlloc(v->call, v->tiov, &v->tnio, RX_MAXIOVECS, *tlen);
110 code = rx_Error(v->call);
122 rxfs_storeUfsRead(void *r, struct osi_file *tfile, afs_uint32 offset,
123 afs_uint32 tlen, afs_uint32 *bytesread)
126 struct rxfs_storeVariables *v = (struct rxfs_storeVariables *)r;
129 code = afs_osi_Read(tfile, -1, v->tbuffer, tlen);
135 #if defined(KERNEL_HAVE_UERROR)
143 rxfs_storeMemRead(void *r, struct osi_file *tfile, afs_uint32 offset,
144 afs_uint32 tlen, afs_uint32 *bytesread)
147 struct rxfs_storeVariables *v = (struct rxfs_storeVariables *)r;
148 struct memCacheEntry *mceP = (struct memCacheEntry *)tfile;
151 code = afs_MemReadvBlk(mceP, offset, v->tiov, v->tnio, tlen);
159 rxfs_storeMemWrite(void *r, afs_uint32 l, afs_uint32 *byteswritten)
162 struct rxfs_storeVariables *v = (struct rxfs_storeVariables *)r;
165 code = rx_Writev(v->call, v->tiov, v->tnio, l);
168 code = rx_Error(v->call);
169 return (code ? code : -33);
171 *byteswritten = code;
176 rxfs_storeUfsWrite(void *r, afs_uint32 l, afs_uint32 *byteswritten)
179 struct rxfs_storeVariables *v = (struct rxfs_storeVariables *)r;
182 code = rx_Write(v->call, v->tbuffer, l);
183 /* writing 0 bytes will
184 * push a short packet. Is that really what we want, just because the
185 * data didn't come back from the disk yet? Let's try it and see. */
188 code = rx_Error(v->call);
189 return (code ? code : -33);
191 *byteswritten = code;
196 rxfs_storePadd(void *rock, afs_uint32 size)
200 struct rxfs_storeVariables *v = (struct rxfs_storeVariables *)rock;
203 v->tbuffer = osi_AllocLargeSpace(AFS_LRALLOCSIZ);
204 memset(v->tbuffer, 0, AFS_LRALLOCSIZ);
207 tlen = (size > AFS_LRALLOCSIZ ? AFS_LRALLOCSIZ : size);
209 code = rx_Write(v->call, v->tbuffer, tlen);
213 return -33; /* XXX */
220 rxfs_storeStatus(void *rock)
222 struct rxfs_storeVariables *v = (struct rxfs_storeVariables *)rock;
224 if (rx_GetRemoteStatus(v->call) & 1)
230 rxfs_storeClose(void *r, struct AFSFetchStatus *OutStatus, int *doProcessFS)
233 struct AFSVolSync tsync;
234 struct rxfs_storeVariables *v = (struct rxfs_storeVariables *)r;
239 #ifdef AFS_64BIT_CLIENT
241 code = EndRXAFS_StoreData64(v->call, OutStatus, &tsync);
244 code = EndRXAFS_StoreData(v->call, OutStatus, &tsync);
247 *doProcessFS = 1; /* Flag to run afs_ProcessFS() later on */
253 rxfs_storeDestroy(void **r, afs_int32 error)
255 afs_int32 code = error;
256 struct rxfs_storeVariables *v = (struct rxfs_storeVariables *)*r;
262 code2 = rx_EndCall(v->call, code);
268 osi_FreeLargeSpace(v->tbuffer);
270 osi_FreeSmallSpace(v->tiov);
271 osi_FreeSmallSpace(v);
276 struct storeOps rxfs_storeUfsOps = {
277 rxfs_storeUfsPrepare,
287 struct storeOps rxfs_storeMemOps = {
288 rxfs_storeMemPrepare,
298 rxfs_storeInit(struct vcache *avc, struct afs_conn *tc, afs_size_t tlen,
299 afs_size_t bytes, afs_size_t base,
300 int sync, struct storeOps **ops, void **rock)
303 struct rxfs_storeVariables *v;
308 v = (struct rxfs_storeVariables *) osi_AllocSmallSpace(sizeof(struct rxfs_storeVariables));
310 osi_Panic("rxfs_storeInit: osi_AllocSmallSpace returned NULL\n");
311 memset(v, 0, sizeof(struct rxfs_storeVariables));
313 v->InStatus.ClientModTime = avc->f.m.Date;
314 v->InStatus.Mask = AFS_SETMODTIME;
316 v->InStatus.Mask |= AFS_FSYNC;
318 v->call = rx_NewCall(tc->id);
320 #ifdef AFS_64BIT_CLIENT
321 if (!afs_serverHasNo64Bit(tc))
322 code = StartRXAFS_StoreData64(v->call,(struct AFSFid*)&avc->f.fid.Fid,
323 &v->InStatus, base, bytes, tlen);
325 if (tlen > 0xFFFFFFFF)
328 afs_int32 t1 = base, t2 = bytes, t3 = tlen;
329 code = StartRXAFS_StoreData(v->call,
330 (struct AFSFid *) &avc->f.fid.Fid,
331 &v->InStatus, t1, t2, t3);
333 #else /* AFS_64BIT_CLIENT */
334 code = StartRXAFS_StoreData(v->call, (struct AFSFid *)&avc->f.fid.Fid,
335 &v->InStatus, base, bytes, tlen);
336 #endif /* AFS_64BIT_CLIENT */
341 osi_FreeSmallSpace(v);
344 if (cacheDiskType == AFS_FCACHE_TYPE_UFS) {
345 v->tbuffer = osi_AllocLargeSpace(AFS_LRALLOCSIZ);
348 ("rxfs_storeInit: osi_AllocLargeSpace for iovecs returned NULL\n");
349 *ops = (struct storeOps *) &rxfs_storeUfsOps;
351 v->tiov = osi_AllocSmallSpace(sizeof(struct iovec) * RX_MAXIOVECS);
354 ("rxfs_storeInit: osi_AllocSmallSpace for iovecs returned NULL\n");
355 *ops = (struct storeOps *) &rxfs_storeMemOps;
357 /* do this at a higher level now -- it's a parameter */
358 /* for now, only do 'continue from close' code if file fits in one
359 * chunk. Could clearly do better: if only one modified chunk
360 * then can still do this. can do this on *last* modified chunk */
361 tlen = avc->f.m.Length - 1; /* byte position of last byte we'll store */
363 if (AFS_CHUNK(tlen) != 0)
375 unsigned int storeallmissing = 0;
377 * Called for each chunk upon store.
379 * \param avc Ptr to the vcache entry of the file being stored.
380 * \param dclist pointer to the list of dcaches
381 * \param bytes total number of bytes for the current operation
382 * \param anewDV Ptr to the dataversion after store
383 * \param doProcessFS pointer to the "do process FetchStatus" flag
384 * \param OutStatus pointer to the FetchStatus as returned by the fileserver
385 * \param nchunks number of dcaches to consider
386 * \param nomore copy of the "no more data" flag
387 * \param ops pointer to the block of storeOps to be used for this operation
388 * \param rock pointer to the opaque protocol-specific data of this operation
391 afs_CacheStoreDCaches(struct vcache *avc, struct dcache **dclist,
395 struct AFSFetchStatus *OutStatus,
398 struct storeOps *ops, void *rock)
400 int *shouldwake = NULL;
405 osi_timeval_t xferStartTime; /*FS xfer start time */
406 afs_size_t bytesToXfer = 10000; /* # bytes to xfer */
407 afs_size_t bytesXferred = 10000; /* # bytes actually xferred */
408 #endif /* AFS_NOSTATS */
411 for (i = 0; i < nchunks && !code; i++) {
415 struct dcache *tdc = dclist[i];
416 afs_int32 alen = tdc->f.chunkBytes;
418 afs_warn("afs: missing dcache!\n");
420 continue; /* panic? */
422 afs_Trace4(afs_iclSetp, CM_TRACE_STOREALL2, ICL_TYPE_POINTER, avc,
423 ICL_TYPE_INT32, tdc->f.chunk, ICL_TYPE_INT32, tdc->index,
424 ICL_TYPE_INT32, afs_inode2trace(&tdc->f.inode));
427 if (avc->asynchrony == -1) {
428 if (afs_defaultAsynchrony > (bytes - stored))
429 shouldwake = &nomore;
431 else if ((afs_uint32) avc->asynchrony >= (bytes - stored))
432 shouldwake = &nomore;
434 fP = afs_CFileOpen(&tdc->f.inode);
436 afs_Trace4(afs_iclSetp, CM_TRACE_STOREPROC, ICL_TYPE_POINTER, avc,
437 ICL_TYPE_FID, &(avc->f.fid), ICL_TYPE_OFFSET,
438 ICL_HANDLE_OFFSET(avc->f.m.Length), ICL_TYPE_INT32, alen);
440 AFS_STATCNT(CacheStoreProc);
442 XSTATS_START_TIME(AFS_STATS_FS_RPCIDX_STOREDATA);
443 avc->f.truncPos = AFS_NOTRUNC;
446 * In this case, alen is *always* the amount of data we'll be trying
452 osi_GetuTime(&xferStartTime);
453 #endif /* AFS_NOSTATS */
457 afs_int32 bytesread, byteswritten;
458 code = (*ops->prepare)(rock, alen, &tlen);
462 code = (*ops->read)(rock, fP, offset, tlen, &bytesread);
467 code = (*ops->write)(rock, tlen, &byteswritten);
471 bytesXferred += byteswritten;
472 #endif /* AFS_NOSTATS */
477 * if file has been locked on server, can allow
480 if (shouldwake && *shouldwake && ((*ops->status)(rock) == 0)) {
481 *shouldwake = 0; /* only do this once */
485 afs_Trace4(afs_iclSetp, CM_TRACE_STOREPROC, ICL_TYPE_POINTER, avc,
486 ICL_TYPE_FID, &(avc->f.fid), ICL_TYPE_OFFSET,
487 ICL_HANDLE_OFFSET(avc->f.m.Length), ICL_TYPE_INT32, alen);
490 FillStoreStats(code, AFS_STATS_FS_XFERIDX_STOREDATA,
491 &xferStartTime, bytesToXfer, bytesXferred);
492 #endif /* AFS_NOSTATS */
495 if ((tdc->f.chunkBytes < afs_OtherCSize)
496 && (i < (nchunks - 1)) && code == 0) {
497 int bsent, tlen, sbytes = afs_OtherCSize - tdc->f.chunkBytes;
498 char *tbuffer = osi_AllocLargeSpace(AFS_LRALLOCSIZ);
501 tlen = (sbytes > AFS_LRALLOCSIZ ? AFS_LRALLOCSIZ : sbytes);
502 memset(tbuffer, 0, tlen);
505 ((struct rxfs_storeVariables*)rock)->call, tbuffer, tlen);
509 code = -33; /* XXX */
514 osi_FreeLargeSpace(tbuffer);
516 stored += tdc->f.chunkBytes;
517 /* ideally, I'd like to unlock the dcache and turn
518 * off the writing bit here, but that would
519 * require being able to retry StoreAllSegments in
520 * the event of a failure. It only really matters
521 * if user can't read from a 'locked' dcache or
522 * one which has the writing bit turned on. */
526 code = (*ops->close)(rock, OutStatus, doProcessFS);
532 code = (*ops->destroy)(&rock, code);
536 #define lmin(a,b) (((a) < (b)) ? (a) : (b))
540 * \param dclist pointer to the list of dcaches
541 * \param avc Ptr to the vcache entry.
542 * \param areq Ptr to the request structure
543 * \param sync sync flag
544 * \param minj the chunk offset for this call
545 * \param high index of last dcache to store
546 * \param moredata the moredata flag
547 * \param anewDV Ptr to the dataversion after store
548 * \param amaxStoredLength Ptr to the amount of that is actually stored
550 * \note Environment: Nothing interesting.
553 afs_CacheStoreVCache(struct dcache **dcList, struct vcache *avc,
554 struct vrequest *areq, int sync,
555 unsigned int minj, unsigned int high,
556 unsigned int moredata,
557 afs_hyper_t *anewDV, afs_size_t *amaxStoredLength)
560 struct storeOps *ops;
564 struct AFSStoreStatus InStatus;
565 struct AFSFetchStatus OutStatus;
567 afs_size_t base, bytes, length;
570 unsigned int first = 0;
573 for (bytes = 0, j = 0; !code && j <= high; j++) {
575 ObtainSharedLock(&(dcList[j]->lock), 629);
578 bytes += dcList[j]->f.chunkBytes;
579 if ((dcList[j]->f.chunkBytes < afs_OtherCSize)
580 && (dcList[j]->f.chunk - minj < high)
582 int sbytes = afs_OtherCSize - dcList[j]->f.chunkBytes;
586 if (bytes && (j == high || !dcList[j + 1])) {
587 struct dcache **dclist = &dcList[first];
588 /* base = AFS_CHUNKTOBASE(dcList[first]->f.chunk); */
589 base = AFS_CHUNKTOBASE(first + minj);
592 * take a list of dcache structs and send them all off to the server
593 * the list must be in order, and the chunks contiguous.
594 * Note - there is no locking done by this code currently. For
595 * safety's sake, xdcache could be locked over the entire call.
596 * However, that pretty well ties up all the threads. Meantime, all
597 * the chunks _MUST_ have their refcounts bumped.
598 * The writes done before a store back will clear setuid-ness
600 * We can permit CacheStoreProc to wake up the user process IFF we
601 * are doing the last RPC for this close, ie, storing back the last
602 * set of contiguous chunks of a file.
605 nchunks = 1 + j - first;
606 nomore = !(moredata || (j != high));
607 length = lmin(avc->f.m.Length, avc->f.truncPos);
608 afs_Trace4(afs_iclSetp, CM_TRACE_STOREDATA64,
609 ICL_TYPE_FID, &avc->f.fid.Fid, ICL_TYPE_OFFSET,
610 ICL_HANDLE_OFFSET(base), ICL_TYPE_OFFSET,
611 ICL_HANDLE_OFFSET(bytes), ICL_TYPE_OFFSET,
612 ICL_HANDLE_OFFSET(length));
615 tc = afs_Conn(&avc->f.fid, areq, 0);
617 #ifdef AFS_64BIT_CLIENT
620 code = rxfs_storeInit(avc, tc, length, bytes, base,
625 code = afs_CacheStoreDCaches(avc, dclist, bytes, anewDV,
626 &doProcessFS, &OutStatus, nchunks, nomore, ops, rock);
629 #ifdef AFS_64BIT_CLIENT
630 if (code == RXGEN_OPCODE && !afs_serverHasNo64Bit(tc)) {
631 afs_serverSetNo64Bit(tc);
635 continue; /* dummy, label before block end won't work */
636 #endif /* AFS_64BIT_CLIENT */
638 (tc, code, &avc->f.fid, areq,
639 AFS_STATS_FS_RPCIDX_STOREDATA, SHARED_LOCK,
642 /* put back all remaining locked dcache entries */
643 for (i = 0; i < nchunks; i++) {
644 struct dcache *tdc = dclist[i];
646 if (afs_indexFlags[tdc->index] & IFDataMod) {
648 * LOCKXXX -- should hold afs_xdcache(W) when
649 * modifying afs_indexFlags.
651 afs_indexFlags[tdc->index] &= ~IFDataMod;
652 afs_stats_cmperf.cacheCurrDirtyChunks--;
653 afs_indexFlags[tdc->index] &= ~IFDirtyPages;
654 if (sync & AFS_VMSYNC_INVAL) {
655 /* since we have invalidated all the pages of this
656 ** vnode by calling osi_VM_TryToSmush, we can
657 ** safely mark this dcache entry as not having
658 ** any pages. This vnode now becomes eligible for
659 ** reclamation by getDownD.
661 afs_indexFlags[tdc->index] &= ~IFAnyPages;
665 UpgradeSToWLock(&tdc->lock, 628);
666 tdc->f.states &= ~DWriting; /* correct? */
667 tdc->dflags |= DFEntryMod;
668 ReleaseWriteLock(&tdc->lock);
670 /* Mark the entry as released */
675 /* Now copy out return params */
676 UpgradeSToWLock(&avc->lock, 28); /* keep out others for a while */
677 afs_ProcessFS(avc, &OutStatus, areq);
678 /* Keep last (max) size of file on server to see if
679 * we need to call afs_StoreMini to extend the file.
682 *amaxStoredLength = OutStatus.Length;
683 ConvertWToSLock(&avc->lock);
688 for (j++; j <= high; j++) {
690 ReleaseSharedLock(&(dcList[j]->lock));
691 afs_PutDCache(dcList[j]);
692 /* Releasing entry */
698 afs_Trace2(afs_iclSetp, CM_TRACE_STOREALLDCDONE,
699 ICL_TYPE_POINTER, avc, ICL_TYPE_INT32, code);
707 /* rock and operations for RX_FILESERVER */
709 struct rxfs_fetchVariables {
710 struct rx_call *call;
714 afs_int32 hasNo64bit;
720 rxfs_fetchUfsRead(void *r, afs_uint32 size, afs_uint32 *bytesread)
724 struct rxfs_fetchVariables *v = (struct rxfs_fetchVariables *)r;
727 tlen = (size > AFS_LRALLOCSIZ ? AFS_LRALLOCSIZ : size);
729 code = rx_Read(v->call, v->tbuffer, tlen);
738 rxfs_fetchMemRead(void *r, afs_uint32 tlen, afs_uint32 *bytesread)
741 struct rxfs_fetchVariables *v = (struct rxfs_fetchVariables *)r;
745 code = rx_Readv(v->call, v->iov, &v->nio, RX_MAXIOVECS, tlen);
755 rxfs_fetchMemWrite(void *r, struct osi_file *fP,
756 afs_uint32 offset, afs_uint32 tlen,
757 afs_uint32 *byteswritten)
760 struct rxfs_fetchVariables *v = (struct rxfs_fetchVariables *)r;
761 struct memCacheEntry *mceP = (struct memCacheEntry *)fP;
763 code = afs_MemWritevBlk(mceP, offset, v->iov, v->nio, tlen);
767 *byteswritten = code;
772 rxfs_fetchUfsWrite(void *r, struct osi_file *fP,
773 afs_uint32 offset, afs_uint32 tlen,
774 afs_uint32 *byteswritten)
777 struct rxfs_fetchVariables *v = (struct rxfs_fetchVariables *)r;
779 code = afs_osi_Write(fP, -1, v->tbuffer, tlen);
783 *byteswritten = code;
789 rxfs_fetchClose(void *r, struct vcache *avc, struct dcache * adc,
790 struct afs_FetchOutput *o)
792 afs_int32 code, code1 = 0;
793 struct rxfs_fetchVariables *v = (struct rxfs_fetchVariables *)r;
799 #ifdef AFS_64BIT_CLIENT
801 code = EndRXAFS_FetchData64(v->call, &o->OutStatus, &o->CallBack,
805 code = EndRXAFS_FetchData(v->call, &o->OutStatus, &o->CallBack,
807 code1 = rx_EndCall(v->call, code);
818 rxfs_fetchDestroy(void **r, afs_int32 error)
820 afs_int32 code = error;
821 struct rxfs_fetchVariables *v = (struct rxfs_fetchVariables *)*r;
826 code = rx_EndCall(v->call, error);
832 osi_FreeLargeSpace(v->tbuffer);
834 osi_FreeSmallSpace(v->iov);
835 osi_FreeSmallSpace(v);
840 rxfs_fetchMore(void *r, afs_uint32 *length, afs_uint32 *moredata)
843 register struct rxfs_fetchVariables *v
844 = (struct rxfs_fetchVariables *)r;
847 * The fetch protocol is extended for the AFS/DFS translator
848 * to allow multiple blocks of data, each with its own length,
849 * to be returned. As long as the top bit is set, there are more
852 * We do not do this for AFS file servers because they sometimes
853 * return large negative numbers as the transfer size.
856 code = rx_Read(v->call, (void *)length, sizeof(afs_int32));
858 *length = ntohl(*length);
859 if (code != sizeof(afs_int32)) {
860 code = rx_Error(v->call);
862 return (code ? code : -1); /* try to return code, not -1 */
864 *moredata = *length & 0x80000000;
865 *length &= ~0x80000000;
870 struct fetchOps rxfs_fetchUfsOps = {
879 struct fetchOps rxfs_fetchMemOps = {
888 rxfs_fetchInit(register struct afs_conn *tc, struct vcache *avc,afs_offs_t base,
889 afs_uint32 size, afs_uint32 *alength, afs_uint32 *moredata,
891 struct osi_file *fP, struct fetchOps **ops, void **rock)
893 struct rxfs_fetchVariables *v;
895 afs_uint32 length_hi = 0, length, bytes;
897 v = (struct rxfs_fetchVariables *) osi_AllocSmallSpace(sizeof(struct rxfs_fetchVariables));
899 osi_Panic("rxfs_fetchInit: osi_AllocSmallSpace returned NULL\n");
900 memset(v, 0, sizeof(struct rxfs_fetchVariables));
903 v->call = rx_NewCall(tc->id);
906 #ifdef AFS_64BIT_CLIENT
907 afs_size_t length64; /* as returned from server */
908 if (!afs_serverHasNo64Bit(tc)) {
909 afs_uint64 llbytes = size;
911 code = StartRXAFS_FetchData64(v->call, (struct AFSFid *) &avc->f.fid.Fid,
915 afs_Trace2(afs_iclSetp, CM_TRACE_FETCH64CODE,
916 ICL_TYPE_POINTER, avc, ICL_TYPE_INT32, code);
918 bytes = rx_Read(v->call, (char *)&length_hi, sizeof(afs_int32));
920 if (bytes == sizeof(afs_int32)) {
921 length_hi = ntohl(length_hi);
923 code = rx_Error(v->call);
925 code1 = rx_EndCall(v->call, code);
931 if (code == RXGEN_OPCODE || afs_serverHasNo64Bit(tc)) {
932 if (base > 0x7FFFFFFF) {
939 v->call = rx_NewCall(tc->id);
941 StartRXAFS_FetchData(
942 v->call, (struct AFSFid*)&avc->f.fid.Fid,
946 afs_serverSetNo64Bit(tc);
950 bytes = rx_Read(v->call, (char *)&length, sizeof(afs_int32));
952 if (bytes == sizeof(afs_int32))
953 length = ntohl(length);
955 code = rx_Error(v->call);
958 FillInt64(length64, length_hi, length);
959 afs_Trace3(afs_iclSetp, CM_TRACE_FETCH64LENG,
960 ICL_TYPE_POINTER, avc, ICL_TYPE_INT32, code,
962 ICL_HANDLE_OFFSET(length64));
964 #else /* AFS_64BIT_CLIENT */
966 code = StartRXAFS_FetchData(v->call, (struct AFSFid *)&avc->f.fid.Fid,
972 rx_Read(v->call, (char *)&length, sizeof(afs_int32));
974 if (bytes == sizeof(afs_int32)) {
975 *alength = ntohl(length);
977 code = rx_Error(v->call);
980 #endif /* AFS_64BIT_CLIENT */
984 osi_FreeSmallSpace(v);
988 * The fetch protocol is extended for the AFS/DFS translator
989 * to allow multiple blocks of data, each with its own length,
990 * to be returned. As long as the top bit is set, there are more
993 * We do not do this for AFS file servers because they sometimes
994 * return large negative numbers as the transfer size.
996 * Also omit if length > 2^32, as bit 31 is part of the number then.
997 * Known to never be the case ifndef AFS_64BIT_CLIENT.
999 if (avc->f.states & CForeign && !length_hi) {
1000 *moredata = length & 0x80000000;
1001 length &= ~0x80000000;
1003 if (cacheDiskType == AFS_FCACHE_TYPE_UFS) {
1004 v->tbuffer = osi_AllocLargeSpace(AFS_LRALLOCSIZ);
1006 osi_Panic("rxfs_fetchInit: osi_AllocLargeSpace for iovecs returned NULL\n");
1007 osi_Assert(WriteLocked(&adc->lock));
1009 *ops = (struct fetchOps *) &rxfs_fetchUfsOps;
1012 afs_Trace4(afs_iclSetp, CM_TRACE_MEMFETCH, ICL_TYPE_POINTER, avc,
1013 ICL_TYPE_POINTER, fP, ICL_TYPE_OFFSET,
1014 ICL_HANDLE_OFFSET(base), ICL_TYPE_INT32, length);
1016 * We need to alloc the iovecs on the heap so that they are "pinned"
1017 * rather than declare them on the stack - defect 11272
1019 v->iov = osi_AllocSmallSpace(sizeof(struct iovec) * RX_MAXIOVECS);
1021 osi_Panic("rxfs_fetchInit: osi_AllocSmallSpace for iovecs returned NULL\n");
1022 *ops = (struct fetchOps *) &rxfs_fetchMemOps;
1030 * Routine called on fetch; also tells people waiting for data
1031 * that more has arrived.
1033 * \param tc Ptr to the Rx connection structure.
1034 * \param fP File descriptor for the cache file.
1035 * \param base Base offset to fetch.
1036 * \param adc Ptr to the dcache entry for the file, write-locked.
1037 * \param avc Ptr to the vcache entry for the file.
1038 * \param size Amount of data that should be fetched.
1039 * \param tsmall Ptr to the afs_FetchOutput structure.
1041 * \note Environment: Nothing interesting.
1044 afs_CacheFetchProc(register struct afs_conn *tc,
1045 register struct osi_file *fP, afs_size_t base,
1046 struct dcache *adc, struct vcache *avc,
1048 struct afs_FetchOutput *tsmall)
1050 register afs_int32 code;
1052 afs_uint32 bytesread, byteswritten;
1053 struct fetchOps *ops = NULL;
1056 register int offset = 0;
1060 osi_timeval_t xferStartTime; /*FS xfer start time */
1061 afs_size_t bytesToXfer = 0, bytesXferred = 0;
1064 AFS_STATCNT(CacheFetchProc);
1066 XSTATS_START_TIME(AFS_STATS_FS_RPCIDX_FETCHDATA);
1070 * avc->lock(R) if setLocks && !slowPass
1071 * avc->lock(W) if !setLocks || slowPass
1074 code = rxfs_fetchInit(
1075 tc, avc, base, size, &length, &moredata, adc, fP, &ops, &rock);
1078 osi_GetuTime(&xferStartTime);
1079 #endif /* AFS_NOSTATS */
1082 adc->validPos = base;
1086 if ((avc->f.states & CForeign) && moredata && !length) {
1087 code = (*ops->more)(rock, &length, &moredata);
1092 bytesToXfer += length;
1093 #endif /* AFS_NOSTATS */
1094 while (length > 0) {
1095 #ifdef RX_KERNEL_TRACE
1096 afs_Trace1(afs_iclSetp, CM_TRACE_TIMESTAMP, ICL_TYPE_STRING,
1099 code = (*ops->read)(rock, length, &bytesread);
1100 #ifdef RX_KERNEL_TRACE
1101 afs_Trace1(afs_iclSetp, CM_TRACE_TIMESTAMP, ICL_TYPE_STRING,
1105 bytesXferred += bytesread;
1106 #endif /* AFS_NOSTATS */
1108 afs_Trace3(afs_iclSetp, CM_TRACE_FETCH64READ,
1109 ICL_TYPE_POINTER, avc, ICL_TYPE_INT32, code,
1110 ICL_TYPE_INT32, length);
1114 code = (*ops->write)(rock, fP, offset, bytesread, &byteswritten);
1117 offset += bytesread;
1119 length -= bytesread;
1120 adc->validPos = base;
1121 if (afs_osi_Wakeup(&adc->validPos) == 0)
1122 afs_Trace4(afs_iclSetp, CM_TRACE_DCACHEWAKE, ICL_TYPE_STRING,
1123 __FILE__, ICL_TYPE_INT32, __LINE__,
1124 ICL_TYPE_POINTER, adc, ICL_TYPE_INT32,
1130 code = (*ops->close)(rock, avc, adc, tsmall);
1131 (*ops->destroy)(&rock, code);
1134 FillStoreStats(code, AFS_STATS_FS_XFERIDX_FETCHDATA,&xferStartTime,
1135 bytesToXfer, bytesXferred);