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"
22 #endif /* AFS_ALPHA_ENV */
23 #include "afsincludes.h" /* Afs-based standard headers */
24 #include "afs/afs_stats.h" /* statistics */
25 #include "afs_prototypes.h"
27 extern int cacheDiskType;
31 FillStoreStats(int code, int idx, osi_timeval_t *xferStartTime,
32 afs_size_t bytesToXfer, afs_size_t bytesXferred)
34 struct afs_stats_xferData *xferP;
35 osi_timeval_t xferStopTime;
36 osi_timeval_t elapsedTime;
38 xferP = &(afs_stats_cmfullperf.rpc.fsXferTimes[idx]);
39 osi_GetuTime(&xferStopTime);
42 (xferP->numSuccesses)++;
43 afs_stats_XferSumBytes[idx] += bytesXferred;
44 (xferP->sumBytes) += (afs_stats_XferSumBytes[idx] >> 10);
45 afs_stats_XferSumBytes[idx] &= 0x3FF;
46 if (bytesXferred < xferP->minBytes)
47 xferP->minBytes = bytesXferred;
48 if (bytesXferred > xferP->maxBytes)
49 xferP->maxBytes = bytesXferred;
52 * Tally the size of the object. Note: we tally the actual size,
53 * NOT the number of bytes that made it out over the wire.
55 if (bytesToXfer <= AFS_STATS_MAXBYTES_BUCKET0) (xferP->count[0])++;
56 else if (bytesToXfer <= AFS_STATS_MAXBYTES_BUCKET1) (xferP->count[1])++;
57 else if (bytesToXfer <= AFS_STATS_MAXBYTES_BUCKET2) (xferP->count[2])++;
58 else if (bytesToXfer <= AFS_STATS_MAXBYTES_BUCKET3) (xferP->count[3])++;
59 else if (bytesToXfer <= AFS_STATS_MAXBYTES_BUCKET4) (xferP->count[4])++;
60 else if (bytesToXfer <= AFS_STATS_MAXBYTES_BUCKET5) (xferP->count[5])++;
61 else if (bytesToXfer <= AFS_STATS_MAXBYTES_BUCKET6) (xferP->count[6])++;
62 else if (bytesToXfer <= AFS_STATS_MAXBYTES_BUCKET7) (xferP->count[7])++;
66 afs_stats_GetDiff(elapsedTime, (*xferStartTime), xferStopTime);
67 afs_stats_AddTo((xferP->sumTime), elapsedTime);
68 afs_stats_SquareAddTo((xferP->sqrTime), elapsedTime);
69 if (afs_stats_TimeLessThan(elapsedTime, (xferP->minTime))) {
70 afs_stats_TimeAssign((xferP->minTime), elapsedTime);
72 if (afs_stats_TimeGreaterThan(elapsedTime, (xferP->maxTime))) {
73 afs_stats_TimeAssign((xferP->maxTime), elapsedTime);
77 #endif /* AFS_NOSTATS */
79 /* rock and operations for RX_FILESERVER */
84 rxfs_storeUfsPrepare(void *r, afs_uint32 size, afs_uint32 *tlen)
86 *tlen = (size > AFS_LRALLOCSIZ ? AFS_LRALLOCSIZ : size);
91 rxfs_storeMemPrepare(void *r, afs_uint32 size, afs_uint32 *tlen)
94 struct rxfs_storeVariables *v = (struct rxfs_storeVariables *) r;
97 code = rx_WritevAlloc(v->call, v->tiov, &v->tnio, RX_MAXIOVECS, size);
100 code = rx_Error(v->call);
112 rxfs_storeUfsRead(void *r, struct osi_file *tfile, afs_uint32 offset,
113 afs_uint32 tlen, afs_uint32 *bytesread)
116 struct rxfs_storeVariables *v = (struct rxfs_storeVariables *)r;
119 code = afs_osi_Read(tfile, -1, v->tbuffer, tlen);
125 #if defined(KERNEL_HAVE_UERROR)
133 rxfs_storeMemRead(void *r, struct osi_file *tfile, afs_uint32 offset,
134 afs_uint32 tlen, afs_uint32 *bytesread)
137 struct rxfs_storeVariables *v = (struct rxfs_storeVariables *)r;
138 struct memCacheEntry *mceP = (struct memCacheEntry *)tfile;
141 code = afs_MemReadvBlk(mceP, offset, v->tiov, v->tnio, tlen);
149 rxfs_storeMemWrite(void *r, afs_uint32 l, afs_uint32 *byteswritten)
152 struct rxfs_storeVariables *v = (struct rxfs_storeVariables *)r;
155 code = rx_Writev(v->call, v->tiov, v->tnio, l);
158 code = rx_Error(v->call);
159 return (code ? code : -33);
161 *byteswritten = code;
166 rxfs_storeUfsWrite(void *r, afs_uint32 l, afs_uint32 *byteswritten)
169 struct rxfs_storeVariables *v = (struct rxfs_storeVariables *)r;
172 code = rx_Write(v->call, v->tbuffer, l);
173 /* writing 0 bytes will
174 * push a short packet. Is that really what we want, just because the
175 * data didn't come back from the disk yet? Let's try it and see. */
178 code = rx_Error(v->call);
179 return (code ? code : -33);
181 *byteswritten = code;
186 rxfs_storePadd(void *rock, afs_uint32 size)
190 struct rxfs_storeVariables *v = (struct rxfs_storeVariables *)rock;
193 v->tbuffer = osi_AllocLargeSpace(AFS_LRALLOCSIZ);
194 memset(v->tbuffer, 0, AFS_LRALLOCSIZ);
197 tlen = (size > AFS_LRALLOCSIZ ? AFS_LRALLOCSIZ : size);
199 code = rx_Write(v->call, v->tbuffer, tlen);
203 return -33; /* XXX */
210 rxfs_storeStatus(void *rock)
212 struct rxfs_storeVariables *v = (struct rxfs_storeVariables *)rock;
214 if (rx_GetRemoteStatus(v->call) & 1)
220 rxfs_storeClose(void *r, struct AFSFetchStatus *OutStatus, int *doProcessFS)
223 struct AFSVolSync tsync;
224 struct rxfs_storeVariables *v = (struct rxfs_storeVariables *)r;
229 #ifdef AFS_64BIT_CLIENT
231 code = EndRXAFS_StoreData64(v->call, OutStatus, &tsync);
234 code = EndRXAFS_StoreData(v->call, OutStatus, &tsync);
237 *doProcessFS = 1; /* Flag to run afs_ProcessFS() later on */
243 rxfs_storeDestroy(void **r, afs_int32 error)
245 afs_int32 code = error;
246 struct rxfs_storeVariables *v = (struct rxfs_storeVariables *)*r;
251 code = rx_EndCall(v->call, error);
257 osi_FreeLargeSpace(v->tbuffer);
259 osi_FreeSmallSpace(v->tiov);
260 osi_FreeSmallSpace(v);
265 afs_GenericStoreProc(struct storeOps *ops, void *rock,
266 struct dcache *tdc, int *shouldwake,
267 afs_size_t *bytesXferred)
269 struct rxfs_storeVariables *svar = rock;
270 afs_uint32 tlen, bytesread, byteswritten;
274 struct osi_file *tfile;
276 size = tdc->f.chunkBytes;
278 tfile = afs_CFileOpen(&tdc->f.inode);
281 code = (*ops->prepare)(rock, size, &tlen);
285 code = (*ops->read)(rock, tfile, offset, tlen, &bytesread);
290 code = (*ops->write)(rock, tlen, &byteswritten);
294 *bytesXferred += byteswritten;
295 #endif /* AFS_NOSTATS */
300 * if file has been locked on server, can allow
303 if (shouldwake && *shouldwake && ((*ops->status)(rock) == 0)) {
304 *shouldwake = 0; /* only do this once */
305 afs_wakeup(svar->vcache);
308 afs_CFileClose(tfile);
314 struct storeOps rxfs_storeUfsOps = {
315 #ifndef HAVE_STRUCT_LABEL_SUPPORT
316 rxfs_storeUfsPrepare,
325 .prepare = rxfs_storeUfsPrepare,
326 .read = rxfs_storeUfsRead,
327 .write = rxfs_storeUfsWrite,
328 .status = rxfs_storeStatus,
329 .padd = rxfs_storePadd,
330 .close = rxfs_storeClose,
331 .destroy = rxfs_storeDestroy,
332 #ifdef AFS_LINUX26_ENV
333 .storeproc = afs_linux_storeproc
335 .storeproc = afs_GenericStoreProc
341 struct storeOps rxfs_storeMemOps = {
342 #ifndef HAVE_STRUCT_LABEL_SUPPORT
343 rxfs_storeMemPrepare,
352 .prepare = rxfs_storeMemPrepare,
353 .read = rxfs_storeMemRead,
354 .write = rxfs_storeMemWrite,
355 .status = rxfs_storeStatus,
356 .padd = rxfs_storePadd,
357 .close = rxfs_storeClose,
358 .destroy = rxfs_storeDestroy,
359 .storeproc = afs_GenericStoreProc
364 rxfs_storeInit(struct vcache *avc, struct afs_conn *tc, afs_size_t base,
365 afs_size_t bytes, afs_size_t length,
366 int sync, struct storeOps **ops, void **rock)
369 struct rxfs_storeVariables *v;
374 v = (struct rxfs_storeVariables *) osi_AllocSmallSpace(sizeof(struct rxfs_storeVariables));
376 osi_Panic("rxfs_storeInit: osi_AllocSmallSpace returned NULL\n");
377 memset(v, 0, sizeof(struct rxfs_storeVariables));
379 v->InStatus.ClientModTime = avc->f.m.Date;
380 v->InStatus.Mask = AFS_SETMODTIME;
383 v->InStatus.Mask |= AFS_FSYNC;
385 v->call = rx_NewCall(tc->id);
387 #ifdef AFS_64BIT_CLIENT
388 if (!afs_serverHasNo64Bit(tc))
389 code = StartRXAFS_StoreData64(
390 v->call, (struct AFSFid*)&avc->f.fid.Fid,
391 &v->InStatus, base, bytes, length);
393 if (length > 0xFFFFFFFF)
396 afs_int32 t1 = base, t2 = bytes, t3 = length;
397 code = StartRXAFS_StoreData(v->call,
398 (struct AFSFid *) &avc->f.fid.Fid,
399 &v->InStatus, t1, t2, t3);
401 #else /* AFS_64BIT_CLIENT */
402 code = StartRXAFS_StoreData(v->call, (struct AFSFid *)&avc->f.fid.Fid,
403 &v->InStatus, base, bytes, length);
404 #endif /* AFS_64BIT_CLIENT */
409 osi_FreeSmallSpace(v);
412 if (cacheDiskType == AFS_FCACHE_TYPE_UFS) {
413 v->tbuffer = osi_AllocLargeSpace(AFS_LRALLOCSIZ);
416 ("rxfs_storeInit: osi_AllocLargeSpace for iovecs returned NULL\n");
417 *ops = (struct storeOps *) &rxfs_storeUfsOps;
419 v->tiov = osi_AllocSmallSpace(sizeof(struct iovec) * RX_MAXIOVECS);
422 ("rxfs_storeInit: osi_AllocSmallSpace for iovecs returned NULL\n");
423 *ops = (struct storeOps *) &rxfs_storeMemOps;
425 /* do this at a higher level now -- it's a parameter */
426 /* for now, only do 'continue from close' code if file fits in one
427 * chunk. Could clearly do better: if only one modified chunk
428 * then can still do this. can do this on *last* modified chunk */
429 length = avc->f.m.Length - 1; /* byte position of last byte we'll store */
431 if (AFS_CHUNK(length) != 0)
442 unsigned int storeallmissing = 0;
444 * Called for each chunk upon store.
446 * \param avc Ptr to the vcache entry of the file being stored.
447 * \param dclist pointer to the list of dcaches
448 * \param bytes total number of bytes for the current operation
449 * \param anewDV Ptr to the dataversion after store
450 * \param doProcessFS pointer to the "do process FetchStatus" flag
451 * \param OutStatus pointer to the FetchStatus as returned by the fileserver
452 * \param nchunks number of dcaches to consider
453 * \param nomore copy of the "no more data" flag
454 * \param ops pointer to the block of storeOps to be used for this operation
455 * \param rock pointer to the opaque protocol-specific data of this operation
458 afs_CacheStoreDCaches(struct vcache *avc, struct dcache **dclist,
459 afs_size_t bytes, afs_hyper_t *anewDV, int *doProcessFS,
460 struct AFSFetchStatus *OutStatus, afs_uint32 nchunks,
461 int nomore, struct storeOps *ops, void *rock)
463 int *shouldwake = NULL;
466 afs_size_t bytesXferred;
469 osi_timeval_t xferStartTime; /*FS xfer start time */
470 afs_size_t bytesToXfer = 10000; /* # bytes to xfer */
471 #endif /* AFS_NOSTATS */
474 for (i = 0; i < nchunks && !code; i++) {
476 struct dcache *tdc = dclist[i];
477 afs_int32 size = tdc->f.chunkBytes;
479 afs_warn("afs: missing dcache!\n");
481 continue; /* panic? */
483 afs_Trace4(afs_iclSetp, CM_TRACE_STOREALL2, ICL_TYPE_POINTER, avc,
484 ICL_TYPE_INT32, tdc->f.chunk, ICL_TYPE_INT32, tdc->index,
485 ICL_TYPE_INT32, afs_inode2trace(&tdc->f.inode));
488 if (avc->asynchrony == -1) {
489 if (afs_defaultAsynchrony > (bytes - stored))
490 shouldwake = &nomore;
492 else if ((afs_uint32) avc->asynchrony >= (bytes - stored))
493 shouldwake = &nomore;
496 afs_Trace4(afs_iclSetp, CM_TRACE_STOREPROC, ICL_TYPE_POINTER, avc,
497 ICL_TYPE_FID, &(avc->f.fid), ICL_TYPE_OFFSET,
498 ICL_HANDLE_OFFSET(avc->f.m.Length), ICL_TYPE_INT32, size);
500 AFS_STATCNT(CacheStoreProc);
502 XSTATS_START_TIME(AFS_STATS_FS_RPCIDX_STOREDATA);
503 avc->f.truncPos = AFS_NOTRUNC;
506 * In this case, size is *always* the amount of data we'll be trying
511 osi_GetuTime(&xferStartTime);
512 #endif /* AFS_NOSTATS */
515 code = (*ops->storeproc)(ops, rock, tdc, shouldwake,
518 afs_Trace4(afs_iclSetp, CM_TRACE_STOREPROC, ICL_TYPE_POINTER, avc,
519 ICL_TYPE_FID, &(avc->f.fid), ICL_TYPE_OFFSET,
520 ICL_HANDLE_OFFSET(avc->f.m.Length), ICL_TYPE_INT32, size);
523 FillStoreStats(code, AFS_STATS_FS_XFERIDX_STOREDATA,
524 &xferStartTime, bytesToXfer, bytesXferred);
525 #endif /* AFS_NOSTATS */
527 if ((tdc->f.chunkBytes < afs_OtherCSize)
528 && (i < (nchunks - 1)) && code == 0) {
529 code = (*ops->padd)(rock, afs_OtherCSize - tdc->f.chunkBytes);
531 stored += tdc->f.chunkBytes;
532 /* ideally, I'd like to unlock the dcache and turn
533 * off the writing bit here, but that would
534 * require being able to retry StoreAllSegments in
535 * the event of a failure. It only really matters
536 * if user can't read from a 'locked' dcache or
537 * one which has the writing bit turned on. */
541 code = (*ops->close)(rock, OutStatus, doProcessFS);
548 code = (*ops->destroy)(&rock, code);
552 #define lmin(a,b) (((a) < (b)) ? (a) : (b))
556 * \param dclist pointer to the list of dcaches
557 * \param avc Ptr to the vcache entry.
558 * \param areq Ptr to the request structure
559 * \param sync sync flag
560 * \param minj the chunk offset for this call
561 * \param high index of last dcache to store
562 * \param moredata the moredata flag
563 * \param anewDV Ptr to the dataversion after store
564 * \param amaxStoredLength Ptr to the amount of that is actually stored
566 * \note Environment: Nothing interesting.
569 afs_CacheStoreVCache(struct dcache **dcList, struct vcache *avc,
570 struct vrequest *areq, int sync, unsigned int minj,
571 unsigned int high, unsigned int moredata,
572 afs_hyper_t *anewDV, afs_size_t *amaxStoredLength)
575 struct storeOps *ops;
579 struct AFSFetchStatus OutStatus;
581 afs_size_t base, bytes, length;
583 unsigned int first = 0;
586 for (bytes = 0, j = 0; !code && j <= high; j++) {
588 ObtainSharedLock(&(dcList[j]->lock), 629);
591 bytes += dcList[j]->f.chunkBytes;
592 if ((dcList[j]->f.chunkBytes < afs_OtherCSize)
593 && (dcList[j]->f.chunk - minj < high)
595 int sbytes = afs_OtherCSize - dcList[j]->f.chunkBytes;
599 if (bytes && (j == high || !dcList[j + 1])) {
601 struct dcache **dclist = &dcList[first];
602 /* base = AFS_CHUNKTOBASE(dcList[first]->f.chunk); */
603 base = AFS_CHUNKTOBASE(first + minj);
606 * take a list of dcache structs and send them all off to the server
607 * the list must be in order, and the chunks contiguous.
608 * Note - there is no locking done by this code currently. For
609 * safety's sake, xdcache could be locked over the entire call.
610 * However, that pretty well ties up all the threads. Meantime, all
611 * the chunks _MUST_ have their refcounts bumped.
612 * The writes done before a store back will clear setuid-ness
614 * We can permit CacheStoreProc to wake up the user process IFF we
615 * are doing the last RPC for this close, ie, storing back the last
616 * set of contiguous chunks of a file.
619 nchunks = 1 + j - first;
620 nomore = !(moredata || (j != high));
621 length = lmin(avc->f.m.Length, avc->f.truncPos);
622 afs_Trace4(afs_iclSetp, CM_TRACE_STOREDATA64,
623 ICL_TYPE_FID, &avc->f.fid.Fid, ICL_TYPE_OFFSET,
624 ICL_HANDLE_OFFSET(base), ICL_TYPE_OFFSET,
625 ICL_HANDLE_OFFSET(bytes), ICL_TYPE_OFFSET,
626 ICL_HANDLE_OFFSET(length));
629 tc = afs_Conn(&avc->f.fid, areq, 0);
631 #ifdef AFS_64BIT_CLIENT
634 code = rxfs_storeInit(avc, tc, base, bytes, length,
637 code = afs_CacheStoreDCaches(avc, dclist, bytes, anewDV,
638 &doProcessFS, &OutStatus,
639 nchunks, nomore, ops, rock);
642 #ifdef AFS_64BIT_CLIENT
643 if (code == RXGEN_OPCODE && !afs_serverHasNo64Bit(tc)) {
644 afs_serverSetNo64Bit(tc);
647 #endif /* AFS_64BIT_CLIENT */
649 (tc, code, &avc->f.fid, areq,
650 AFS_STATS_FS_RPCIDX_STOREDATA, SHARED_LOCK,
653 /* put back all remaining locked dcache entries */
654 for (i = 0; i < nchunks; i++) {
655 struct dcache *tdc = dclist[i];
657 if (afs_indexFlags[tdc->index] & IFDataMod) {
659 * LOCKXXX -- should hold afs_xdcache(W) when
660 * modifying afs_indexFlags.
662 afs_indexFlags[tdc->index] &= ~IFDataMod;
663 afs_stats_cmperf.cacheCurrDirtyChunks--;
664 afs_indexFlags[tdc->index] &= ~IFDirtyPages;
665 if (sync & AFS_VMSYNC_INVAL) {
666 /* since we have invalidated all the pages of this
667 ** vnode by calling osi_VM_TryToSmush, we can
668 ** safely mark this dcache entry as not having
669 ** any pages. This vnode now becomes eligible for
670 ** reclamation by getDownD.
672 afs_indexFlags[tdc->index] &= ~IFAnyPages;
676 UpgradeSToWLock(&tdc->lock, 628);
677 tdc->f.states &= ~DWriting; /* correct? */
678 tdc->dflags |= DFEntryMod;
679 ReleaseWriteLock(&tdc->lock);
681 /* Mark the entry as released */
686 /* Now copy out return params */
687 UpgradeSToWLock(&avc->lock, 28); /* keep out others for a while */
688 afs_ProcessFS(avc, &OutStatus, areq);
689 /* Keep last (max) size of file on server to see if
690 * we need to call afs_StoreMini to extend the file.
693 *amaxStoredLength = OutStatus.Length;
694 ConvertWToSLock(&avc->lock);
699 for (j++; j <= high; j++) {
701 ReleaseSharedLock(&(dcList[j]->lock));
702 afs_PutDCache(dcList[j]);
703 /* Releasing entry */
709 afs_Trace2(afs_iclSetp, CM_TRACE_STOREALLDCDONE,
710 ICL_TYPE_POINTER, avc, ICL_TYPE_INT32, code);
718 /* rock and operations for RX_FILESERVER */
720 struct rxfs_fetchVariables {
721 struct rx_call *call;
725 afs_int32 hasNo64bit;
731 rxfs_fetchUfsRead(void *r, afs_uint32 size, afs_uint32 *bytesread)
735 struct rxfs_fetchVariables *v = (struct rxfs_fetchVariables *)r;
738 tlen = (size > AFS_LRALLOCSIZ ? AFS_LRALLOCSIZ : size);
740 code = rx_Read(v->call, v->tbuffer, tlen);
749 rxfs_fetchMemRead(void *r, afs_uint32 tlen, afs_uint32 *bytesread)
752 struct rxfs_fetchVariables *v = (struct rxfs_fetchVariables *)r;
756 code = rx_Readv(v->call, v->iov, &v->nio, RX_MAXIOVECS, tlen);
766 rxfs_fetchMemWrite(void *r, struct osi_file *fP, afs_uint32 offset,
767 afs_uint32 tlen, afs_uint32 *byteswritten)
770 struct rxfs_fetchVariables *v = (struct rxfs_fetchVariables *)r;
771 struct memCacheEntry *mceP = (struct memCacheEntry *)fP;
773 code = afs_MemWritevBlk(mceP, offset, v->iov, v->nio, tlen);
777 *byteswritten = code;
782 rxfs_fetchUfsWrite(void *r, struct osi_file *fP, afs_uint32 offset,
783 afs_uint32 tlen, afs_uint32 *byteswritten)
786 struct rxfs_fetchVariables *v = (struct rxfs_fetchVariables *)r;
788 code = afs_osi_Write(fP, -1, v->tbuffer, tlen);
792 *byteswritten = code;
798 rxfs_fetchClose(void *r, struct vcache *avc, struct dcache * adc,
799 struct afs_FetchOutput *o)
801 afs_int32 code, code1 = 0;
802 struct rxfs_fetchVariables *v = (struct rxfs_fetchVariables *)r;
808 #ifdef AFS_64BIT_CLIENT
810 code = EndRXAFS_FetchData64(v->call, &o->OutStatus, &o->CallBack,
814 code = EndRXAFS_FetchData(v->call, &o->OutStatus, &o->CallBack,
816 code1 = rx_EndCall(v->call, code);
827 rxfs_fetchDestroy(void **r, afs_int32 error)
829 afs_int32 code = error;
830 struct rxfs_fetchVariables *v = (struct rxfs_fetchVariables *)*r;
835 code = rx_EndCall(v->call, error);
841 osi_FreeLargeSpace(v->tbuffer);
843 osi_FreeSmallSpace(v->iov);
844 osi_FreeSmallSpace(v);
849 rxfs_fetchMore(void *r, afs_int32 *length, afs_uint32 *moredata)
852 struct rxfs_fetchVariables *v = (struct rxfs_fetchVariables *)r;
855 * The fetch protocol is extended for the AFS/DFS translator
856 * to allow multiple blocks of data, each with its own length,
857 * to be returned. As long as the top bit is set, there are more
860 * We do not do this for AFS file servers because they sometimes
861 * return large negative numbers as the transfer size.
865 code = rx_Read(v->call, (void *)length, sizeof(afs_int32));
867 *length = ntohl(*length);
868 if (code != sizeof(afs_int32)) {
869 code = rx_Error(v->call);
871 return (code ? code : -1); /* try to return code, not -1 */
874 *moredata = *length & 0x80000000;
875 *length &= ~0x80000000;
880 struct fetchOps rxfs_fetchUfsOps = {
889 struct fetchOps rxfs_fetchMemOps = {
898 rxfs_fetchInit(struct afs_conn *tc, struct vcache *avc, afs_offs_t base,
899 afs_uint32 size, afs_int32 *alength, struct dcache *adc,
900 struct osi_file *fP, struct fetchOps **ops, void **rock)
902 struct rxfs_fetchVariables *v;
903 int code = 0, code1 = 0;
904 #ifdef AFS_64BIT_CLIENT
905 afs_uint32 length_hi = 0;
907 afs_uint32 length, bytes;
909 v = (struct rxfs_fetchVariables *)
910 osi_AllocSmallSpace(sizeof(struct rxfs_fetchVariables));
912 osi_Panic("rxfs_fetchInit: osi_AllocSmallSpace returned NULL\n");
913 memset(v, 0, sizeof(struct rxfs_fetchVariables));
916 v->call = rx_NewCall(tc->id);
919 #ifdef AFS_64BIT_CLIENT
920 afs_size_t length64; /* as returned from server */
921 if (!afs_serverHasNo64Bit(tc)) {
922 afs_uint64 llbytes = size;
924 code = StartRXAFS_FetchData64(v->call,
925 (struct AFSFid *) &avc->f.fid.Fid,
929 afs_Trace2(afs_iclSetp, CM_TRACE_FETCH64CODE,
930 ICL_TYPE_POINTER, avc, ICL_TYPE_INT32, code);
932 bytes = rx_Read(v->call, (char *)&length_hi, sizeof(afs_int32));
934 if (bytes == sizeof(afs_int32)) {
935 length_hi = ntohl(length_hi);
937 code = rx_Error(v->call);
939 code1 = rx_EndCall(v->call, code);
945 if (code == RXGEN_OPCODE || afs_serverHasNo64Bit(tc)) {
946 if (base > 0x7FFFFFFF) {
953 v->call = rx_NewCall(tc->id);
955 StartRXAFS_FetchData(
956 v->call, (struct AFSFid*)&avc->f.fid.Fid,
960 afs_serverSetNo64Bit(tc);
964 bytes = rx_Read(v->call, (char *)&length, sizeof(afs_int32));
966 if (bytes == sizeof(afs_int32))
967 length = ntohl(length);
970 code = rx_Error(v->call);
971 code1 = rx_EndCall(v->call, code);
976 FillInt64(length64, length_hi, length);
977 afs_Trace3(afs_iclSetp, CM_TRACE_FETCH64LENG,
978 ICL_TYPE_POINTER, avc, ICL_TYPE_INT32, code,
980 ICL_HANDLE_OFFSET(length64));
982 #else /* AFS_64BIT_CLIENT */
984 code = StartRXAFS_FetchData(v->call, (struct AFSFid *)&avc->f.fid.Fid,
990 rx_Read(v->call, (char *)&length, sizeof(afs_int32));
992 if (bytes == sizeof(afs_int32)) {
993 *alength = ntohl(length);
995 code = rx_Error(v->call);
996 code1 = rx_EndCall(v->call, code);
1000 #endif /* AFS_64BIT_CLIENT */
1004 /* We need to cast here, in order to avoid issues if *alength is
1005 * negative. Some, older, fileservers can return a negative length,
1006 * which the rest of the code deals correctly with. */
1007 if (code == 0 && *alength > (afs_int32) size) {
1008 /* The fileserver told us it is going to send more data than we
1009 * requested. It shouldn't do that, and accepting that much data
1010 * can make us take up more cache space than we're supposed to,
1012 code = rx_Error(v->call);
1014 code1 = rx_EndCall(v->call, code);
1024 osi_FreeSmallSpace(v);
1027 if (cacheDiskType == AFS_FCACHE_TYPE_UFS) {
1028 v->tbuffer = osi_AllocLargeSpace(AFS_LRALLOCSIZ);
1030 osi_Panic("rxfs_fetchInit: osi_AllocLargeSpace for iovecs returned NULL\n");
1031 osi_Assert(WriteLocked(&adc->lock));
1033 *ops = (struct fetchOps *) &rxfs_fetchUfsOps;
1036 afs_Trace4(afs_iclSetp, CM_TRACE_MEMFETCH, ICL_TYPE_POINTER, avc,
1037 ICL_TYPE_POINTER, fP, ICL_TYPE_OFFSET,
1038 ICL_HANDLE_OFFSET(base), ICL_TYPE_INT32, length);
1040 * We need to alloc the iovecs on the heap so that they are "pinned"
1041 * rather than declare them on the stack - defect 11272
1043 v->iov = osi_AllocSmallSpace(sizeof(struct iovec) * RX_MAXIOVECS);
1045 osi_Panic("rxfs_fetchInit: osi_AllocSmallSpace for iovecs returned NULL\n");
1046 *ops = (struct fetchOps *) &rxfs_fetchMemOps;
1054 * Routine called on fetch; also tells people waiting for data
1055 * that more has arrived.
1057 * \param tc Ptr to the Rx connection structure.
1058 * \param fP File descriptor for the cache file.
1059 * \param base Base offset to fetch.
1060 * \param adc Ptr to the dcache entry for the file, write-locked.
1061 * \param avc Ptr to the vcache entry for the file.
1062 * \param size Amount of data that should be fetched.
1063 * \param tsmall Ptr to the afs_FetchOutput structure.
1065 * \note Environment: Nothing interesting.
1068 afs_CacheFetchProc(struct afs_conn *tc, struct osi_file *fP, afs_size_t base,
1069 struct dcache *adc, struct vcache *avc, afs_int32 size,
1070 struct afs_FetchOutput *tsmall)
1074 afs_uint32 bytesread, byteswritten;
1075 struct fetchOps *ops = NULL;
1077 afs_uint32 moredata = 0;
1082 osi_timeval_t xferStartTime; /*FS xfer start time */
1083 afs_size_t bytesToXfer = 0, bytesXferred = 0;
1086 AFS_STATCNT(CacheFetchProc);
1088 XSTATS_START_TIME(AFS_STATS_FS_RPCIDX_FETCHDATA);
1092 * avc->lock(R) if setLocks && !slowPass
1093 * avc->lock(W) if !setLocks || slowPass
1096 code = rxfs_fetchInit(
1097 tc, avc, base, size, &length, adc, fP, &ops, &rock);
1100 osi_GetuTime(&xferStartTime);
1101 #endif /* AFS_NOSTATS */
1104 adc->validPos = base;
1108 if (avc->f.states & CForeign) {
1109 code = (*ops->more)(rock, &length, &moredata);
1114 bytesToXfer += length;
1115 #endif /* AFS_NOSTATS */
1116 while (length > 0) {
1117 #ifdef RX_KERNEL_TRACE
1118 afs_Trace1(afs_iclSetp, CM_TRACE_TIMESTAMP, ICL_TYPE_STRING,
1121 code = (*ops->read)(rock, length, &bytesread);
1122 #ifdef RX_KERNEL_TRACE
1123 afs_Trace1(afs_iclSetp, CM_TRACE_TIMESTAMP, ICL_TYPE_STRING,
1127 bytesXferred += bytesread;
1128 #endif /* AFS_NOSTATS */
1130 afs_Trace3(afs_iclSetp, CM_TRACE_FETCH64READ,
1131 ICL_TYPE_POINTER, avc, ICL_TYPE_INT32, code,
1132 ICL_TYPE_INT32, length);
1136 code = (*ops->write)(rock, fP, offset, bytesread, &byteswritten);
1139 offset += bytesread;
1141 length -= bytesread;
1142 adc->validPos = base;
1143 if (afs_osi_Wakeup(&adc->validPos) == 0)
1144 afs_Trace4(afs_iclSetp, CM_TRACE_DCACHEWAKE, ICL_TYPE_STRING,
1145 __FILE__, ICL_TYPE_INT32, __LINE__,
1146 ICL_TYPE_POINTER, adc, ICL_TYPE_INT32,
1152 code = (*ops->close)(rock, avc, adc, tsmall);
1154 (*ops->destroy)(&rock, code);
1157 FillStoreStats(code, AFS_STATS_FS_XFERIDX_FETCHDATA, &xferStartTime,
1158 bytesToXfer, bytesXferred);