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;
38 osi_timeval_t elapsedTime;
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 */
86 rxfs_storeUfsPrepare(void *r, afs_uint32 size, afs_uint32 *tlen)
88 *tlen = (size > AFS_LRALLOCSIZ ? AFS_LRALLOCSIZ : size);
93 rxfs_storeMemPrepare(void *r, afs_uint32 size, afs_uint32 *tlen)
96 struct rxfs_storeVariables *v = (struct rxfs_storeVariables *) r;
98 *tlen = (size > AFS_LRALLOCSIZ ? AFS_LRALLOCSIZ : size);
100 code = rx_WritevAlloc(v->call, v->tiov, &v->tnio, RX_MAXIOVECS, *tlen);
103 code = rx_Error(v->call);
115 rxfs_storeUfsRead(void *r, struct osi_file *tfile, afs_uint32 offset,
116 afs_uint32 tlen, afs_uint32 *bytesread)
119 struct rxfs_storeVariables *v = (struct rxfs_storeVariables *)r;
122 code = afs_osi_Read(tfile, -1, v->tbuffer, tlen);
128 #if defined(KERNEL_HAVE_UERROR)
136 rxfs_storeMemRead(void *r, struct osi_file *tfile, afs_uint32 offset,
137 afs_uint32 tlen, afs_uint32 *bytesread)
140 struct rxfs_storeVariables *v = (struct rxfs_storeVariables *)r;
141 struct memCacheEntry *mceP = (struct memCacheEntry *)tfile;
144 code = afs_MemReadvBlk(mceP, offset, v->tiov, v->tnio, tlen);
152 rxfs_storeMemWrite(void *r, afs_uint32 l, afs_uint32 *byteswritten)
155 struct rxfs_storeVariables *v = (struct rxfs_storeVariables *)r;
158 code = rx_Writev(v->call, v->tiov, v->tnio, l);
161 code = rx_Error(v->call);
162 return (code ? code : -33);
164 *byteswritten = code;
169 rxfs_storeUfsWrite(void *r, afs_uint32 l, afs_uint32 *byteswritten)
172 struct rxfs_storeVariables *v = (struct rxfs_storeVariables *)r;
175 code = rx_Write(v->call, v->tbuffer, l);
176 /* writing 0 bytes will
177 * push a short packet. Is that really what we want, just because the
178 * data didn't come back from the disk yet? Let's try it and see. */
181 code = rx_Error(v->call);
182 return (code ? code : -33);
184 *byteswritten = code;
189 rxfs_storePadd(void *rock, afs_uint32 size)
193 struct rxfs_storeVariables *v = (struct rxfs_storeVariables *)rock;
196 v->tbuffer = osi_AllocLargeSpace(AFS_LRALLOCSIZ);
197 memset(v->tbuffer, 0, AFS_LRALLOCSIZ);
200 tlen = (size > AFS_LRALLOCSIZ ? AFS_LRALLOCSIZ : size);
202 code = rx_Write(v->call, v->tbuffer, tlen);
206 return -33; /* XXX */
213 rxfs_storeStatus(void *rock)
215 struct rxfs_storeVariables *v = (struct rxfs_storeVariables *)rock;
217 if (rx_GetRemoteStatus(v->call) & 1)
223 rxfs_storeClose(void *r, struct AFSFetchStatus *OutStatus, int *doProcessFS)
226 struct AFSVolSync tsync;
227 struct rxfs_storeVariables *v = (struct rxfs_storeVariables *)r;
232 #ifdef AFS_64BIT_CLIENT
234 code = EndRXAFS_StoreData64(v->call, OutStatus, &tsync);
237 code = EndRXAFS_StoreData(v->call, OutStatus, &tsync);
240 *doProcessFS = 1; /* Flag to run afs_ProcessFS() later on */
246 rxfs_storeDestroy(void **r, afs_int32 error)
248 afs_int32 code = error;
249 struct rxfs_storeVariables *v = (struct rxfs_storeVariables *)*r;
254 code = rx_EndCall(v->call, error);
260 osi_FreeLargeSpace(v->tbuffer);
262 osi_FreeSmallSpace(v->tiov);
263 osi_FreeSmallSpace(v);
268 afs_GenericStoreProc(struct storeOps *ops, void *rock,
269 struct dcache *tdc, int *shouldwake,
270 afs_size_t *bytesXferred)
272 struct rxfs_storeVariables *svar = rock;
273 afs_uint32 tlen, bytesread, byteswritten;
277 struct osi_file *tfile;
279 size = tdc->f.chunkBytes;
281 tfile = afs_CFileOpen(&tdc->f.inode);
284 code = (*ops->prepare)(rock, size, &tlen);
288 code = (*ops->read)(rock, tfile, offset, tlen, &bytesread);
293 code = (*ops->write)(rock, tlen, &byteswritten);
297 *bytesXferred += byteswritten;
298 #endif /* AFS_NOSTATS */
303 * if file has been locked on server, can allow
306 if (shouldwake && *shouldwake && ((*ops->status)(rock) == 0)) {
307 *shouldwake = 0; /* only do this once */
308 afs_wakeup(svar->vcache);
311 afs_CFileClose(tfile);
317 struct storeOps rxfs_storeUfsOps = {
318 #if (defined(AFS_SGI_ENV) && !defined(__c99))
319 rxfs_storeUfsPrepare,
328 .prepare = rxfs_storeUfsPrepare,
329 .read = rxfs_storeUfsRead,
330 .write = rxfs_storeUfsWrite,
331 .status = rxfs_storeStatus,
332 .padd = rxfs_storePadd,
333 .close = rxfs_storeClose,
334 .destroy = rxfs_storeDestroy,
335 #ifdef AFS_LINUX26_ENV
336 .storeproc = afs_linux_storeproc
338 .storeproc = afs_GenericStoreProc
344 struct storeOps rxfs_storeMemOps = {
345 #if (defined(AFS_SGI_ENV) && !defined(__c99))
346 rxfs_storeMemPrepare,
355 .prepare = rxfs_storeMemPrepare,
356 .read = rxfs_storeMemRead,
357 .write = rxfs_storeMemWrite,
358 .status = rxfs_storeStatus,
359 .padd = rxfs_storePadd,
360 .close = rxfs_storeClose,
361 .destroy = rxfs_storeDestroy,
362 #ifdef AFS_LINUX26_ENV
363 .storeproc = afs_linux_storeproc
365 .storeproc = afs_GenericStoreProc
371 rxfs_storeInit(struct vcache *avc, struct afs_conn *tc, afs_size_t base,
372 afs_size_t bytes, afs_size_t length,
373 int sync, struct storeOps **ops, void **rock)
376 struct rxfs_storeVariables *v;
381 v = (struct rxfs_storeVariables *) osi_AllocSmallSpace(sizeof(struct rxfs_storeVariables));
383 osi_Panic("rxfs_storeInit: osi_AllocSmallSpace returned NULL\n");
384 memset(v, 0, sizeof(struct rxfs_storeVariables));
386 v->InStatus.ClientModTime = avc->f.m.Date;
387 v->InStatus.Mask = AFS_SETMODTIME;
390 v->InStatus.Mask |= AFS_FSYNC;
392 v->call = rx_NewCall(tc->id);
394 #ifdef AFS_64BIT_CLIENT
395 if (!afs_serverHasNo64Bit(tc))
396 code = StartRXAFS_StoreData64(
397 v->call, (struct AFSFid*)&avc->f.fid.Fid,
398 &v->InStatus, base, bytes, length);
400 if (length > 0xFFFFFFFF)
403 afs_int32 t1 = base, t2 = bytes, t3 = length;
404 code = StartRXAFS_StoreData(v->call,
405 (struct AFSFid *) &avc->f.fid.Fid,
406 &v->InStatus, t1, t2, t3);
408 #else /* AFS_64BIT_CLIENT */
409 code = StartRXAFS_StoreData(v->call, (struct AFSFid *)&avc->f.fid.Fid,
410 &v->InStatus, base, bytes, length);
411 #endif /* AFS_64BIT_CLIENT */
416 osi_FreeSmallSpace(v);
419 if (cacheDiskType == AFS_FCACHE_TYPE_UFS) {
420 v->tbuffer = osi_AllocLargeSpace(AFS_LRALLOCSIZ);
423 ("rxfs_storeInit: osi_AllocLargeSpace for iovecs returned NULL\n");
424 *ops = (struct storeOps *) &rxfs_storeUfsOps;
426 v->tiov = osi_AllocSmallSpace(sizeof(struct iovec) * RX_MAXIOVECS);
429 ("rxfs_storeInit: osi_AllocSmallSpace for iovecs returned NULL\n");
430 *ops = (struct storeOps *) &rxfs_storeMemOps;
432 /* do this at a higher level now -- it's a parameter */
433 /* for now, only do 'continue from close' code if file fits in one
434 * chunk. Could clearly do better: if only one modified chunk
435 * then can still do this. can do this on *last* modified chunk */
436 length = avc->f.m.Length - 1; /* byte position of last byte we'll store */
438 if (AFS_CHUNK(length) != 0)
449 unsigned int storeallmissing = 0;
451 * Called for each chunk upon store.
453 * \param avc Ptr to the vcache entry of the file being stored.
454 * \param dclist pointer to the list of dcaches
455 * \param bytes total number of bytes for the current operation
456 * \param anewDV Ptr to the dataversion after store
457 * \param doProcessFS pointer to the "do process FetchStatus" flag
458 * \param OutStatus pointer to the FetchStatus as returned by the fileserver
459 * \param nchunks number of dcaches to consider
460 * \param nomore copy of the "no more data" flag
461 * \param ops pointer to the block of storeOps to be used for this operation
462 * \param rock pointer to the opaque protocol-specific data of this operation
465 afs_CacheStoreDCaches(struct vcache *avc, struct dcache **dclist,
469 struct AFSFetchStatus *OutStatus,
472 struct storeOps *ops, void *rock)
474 int *shouldwake = NULL;
477 afs_size_t bytesXferred;
480 osi_timeval_t xferStartTime; /*FS xfer start time */
481 afs_size_t bytesToXfer = 10000; /* # bytes to xfer */
482 #endif /* AFS_NOSTATS */
485 for (i = 0; i < nchunks && !code; i++) {
487 struct dcache *tdc = dclist[i];
488 afs_int32 size = tdc->f.chunkBytes;
490 afs_warn("afs: missing dcache!\n");
492 continue; /* panic? */
494 afs_Trace4(afs_iclSetp, CM_TRACE_STOREALL2, ICL_TYPE_POINTER, avc,
495 ICL_TYPE_INT32, tdc->f.chunk, ICL_TYPE_INT32, tdc->index,
496 ICL_TYPE_INT32, afs_inode2trace(&tdc->f.inode));
499 if (avc->asynchrony == -1) {
500 if (afs_defaultAsynchrony > (bytes - stored))
501 shouldwake = &nomore;
503 else if ((afs_uint32) avc->asynchrony >= (bytes - stored))
504 shouldwake = &nomore;
507 afs_Trace4(afs_iclSetp, CM_TRACE_STOREPROC, ICL_TYPE_POINTER, avc,
508 ICL_TYPE_FID, &(avc->f.fid), ICL_TYPE_OFFSET,
509 ICL_HANDLE_OFFSET(avc->f.m.Length), ICL_TYPE_INT32, size);
511 AFS_STATCNT(CacheStoreProc);
513 XSTATS_START_TIME(AFS_STATS_FS_RPCIDX_STOREDATA);
514 avc->f.truncPos = AFS_NOTRUNC;
517 * In this case, size is *always* the amount of data we'll be trying
522 osi_GetuTime(&xferStartTime);
523 #endif /* AFS_NOSTATS */
526 code = (*ops->storeproc)(ops, rock, tdc, shouldwake,
529 afs_Trace4(afs_iclSetp, CM_TRACE_STOREPROC, ICL_TYPE_POINTER, avc,
530 ICL_TYPE_FID, &(avc->f.fid), ICL_TYPE_OFFSET,
531 ICL_HANDLE_OFFSET(avc->f.m.Length), ICL_TYPE_INT32, size);
534 FillStoreStats(code, AFS_STATS_FS_XFERIDX_STOREDATA,
535 &xferStartTime, bytesToXfer, bytesXferred);
536 #endif /* AFS_NOSTATS */
538 if ((tdc->f.chunkBytes < afs_OtherCSize)
539 && (i < (nchunks - 1)) && code == 0) {
540 code = (*ops->padd)(rock, afs_OtherCSize - tdc->f.chunkBytes);
542 stored += tdc->f.chunkBytes;
543 /* ideally, I'd like to unlock the dcache and turn
544 * off the writing bit here, but that would
545 * require being able to retry StoreAllSegments in
546 * the event of a failure. It only really matters
547 * if user can't read from a 'locked' dcache or
548 * one which has the writing bit turned on. */
552 code = (*ops->close)(rock, OutStatus, doProcessFS);
559 code = (*ops->destroy)(&rock, code);
563 #define lmin(a,b) (((a) < (b)) ? (a) : (b))
567 * \param dclist pointer to the list of dcaches
568 * \param avc Ptr to the vcache entry.
569 * \param areq Ptr to the request structure
570 * \param sync sync flag
571 * \param minj the chunk offset for this call
572 * \param high index of last dcache to store
573 * \param moredata the moredata flag
574 * \param anewDV Ptr to the dataversion after store
575 * \param amaxStoredLength Ptr to the amount of that is actually stored
577 * \note Environment: Nothing interesting.
580 afs_CacheStoreVCache(struct dcache **dcList, struct vcache *avc,
581 struct vrequest *areq, int sync,
582 unsigned int minj, unsigned int high,
583 unsigned int moredata,
584 afs_hyper_t *anewDV, afs_size_t *amaxStoredLength)
587 struct storeOps *ops;
591 struct AFSFetchStatus OutStatus;
593 afs_size_t base, bytes, length;
595 unsigned int first = 0;
598 for (bytes = 0, j = 0; !code && j <= high; j++) {
600 ObtainSharedLock(&(dcList[j]->lock), 629);
603 bytes += dcList[j]->f.chunkBytes;
604 if ((dcList[j]->f.chunkBytes < afs_OtherCSize)
605 && (dcList[j]->f.chunk - minj < high)
607 int sbytes = afs_OtherCSize - dcList[j]->f.chunkBytes;
611 if (bytes && (j == high || !dcList[j + 1])) {
613 struct dcache **dclist = &dcList[first];
614 /* base = AFS_CHUNKTOBASE(dcList[first]->f.chunk); */
615 base = AFS_CHUNKTOBASE(first + minj);
618 * take a list of dcache structs and send them all off to the server
619 * the list must be in order, and the chunks contiguous.
620 * Note - there is no locking done by this code currently. For
621 * safety's sake, xdcache could be locked over the entire call.
622 * However, that pretty well ties up all the threads. Meantime, all
623 * the chunks _MUST_ have their refcounts bumped.
624 * The writes done before a store back will clear setuid-ness
626 * We can permit CacheStoreProc to wake up the user process IFF we
627 * are doing the last RPC for this close, ie, storing back the last
628 * set of contiguous chunks of a file.
631 nchunks = 1 + j - first;
632 nomore = !(moredata || (j != high));
633 length = lmin(avc->f.m.Length, avc->f.truncPos);
634 afs_Trace4(afs_iclSetp, CM_TRACE_STOREDATA64,
635 ICL_TYPE_FID, &avc->f.fid.Fid, ICL_TYPE_OFFSET,
636 ICL_HANDLE_OFFSET(base), ICL_TYPE_OFFSET,
637 ICL_HANDLE_OFFSET(bytes), ICL_TYPE_OFFSET,
638 ICL_HANDLE_OFFSET(length));
641 tc = afs_Conn(&avc->f.fid, areq, 0);
643 #ifdef AFS_64BIT_CLIENT
646 code = rxfs_storeInit(avc, tc, base, bytes, length,
649 code = afs_CacheStoreDCaches(avc, dclist, bytes, anewDV,
650 &doProcessFS, &OutStatus,
651 nchunks, nomore, ops, rock);
654 #ifdef AFS_64BIT_CLIENT
655 if (code == RXGEN_OPCODE && !afs_serverHasNo64Bit(tc)) {
656 afs_serverSetNo64Bit(tc);
659 #endif /* AFS_64BIT_CLIENT */
661 (tc, code, &avc->f.fid, areq,
662 AFS_STATS_FS_RPCIDX_STOREDATA, SHARED_LOCK,
665 /* put back all remaining locked dcache entries */
666 for (i = 0; i < nchunks; i++) {
667 struct dcache *tdc = dclist[i];
669 if (afs_indexFlags[tdc->index] & IFDataMod) {
671 * LOCKXXX -- should hold afs_xdcache(W) when
672 * modifying afs_indexFlags.
674 afs_indexFlags[tdc->index] &= ~IFDataMod;
675 afs_stats_cmperf.cacheCurrDirtyChunks--;
676 afs_indexFlags[tdc->index] &= ~IFDirtyPages;
677 if (sync & AFS_VMSYNC_INVAL) {
678 /* since we have invalidated all the pages of this
679 ** vnode by calling osi_VM_TryToSmush, we can
680 ** safely mark this dcache entry as not having
681 ** any pages. This vnode now becomes eligible for
682 ** reclamation by getDownD.
684 afs_indexFlags[tdc->index] &= ~IFAnyPages;
688 UpgradeSToWLock(&tdc->lock, 628);
689 tdc->f.states &= ~DWriting; /* correct? */
690 tdc->dflags |= DFEntryMod;
691 ReleaseWriteLock(&tdc->lock);
693 /* Mark the entry as released */
698 /* Now copy out return params */
699 UpgradeSToWLock(&avc->lock, 28); /* keep out others for a while */
700 afs_ProcessFS(avc, &OutStatus, areq);
701 /* Keep last (max) size of file on server to see if
702 * we need to call afs_StoreMini to extend the file.
705 *amaxStoredLength = OutStatus.Length;
706 ConvertWToSLock(&avc->lock);
711 for (j++; j <= high; j++) {
713 ReleaseSharedLock(&(dcList[j]->lock));
714 afs_PutDCache(dcList[j]);
715 /* Releasing entry */
721 afs_Trace2(afs_iclSetp, CM_TRACE_STOREALLDCDONE,
722 ICL_TYPE_POINTER, avc, ICL_TYPE_INT32, code);
730 /* rock and operations for RX_FILESERVER */
732 struct rxfs_fetchVariables {
733 struct rx_call *call;
737 afs_int32 hasNo64bit;
743 rxfs_fetchUfsRead(void *r, afs_uint32 size, afs_uint32 *bytesread)
747 struct rxfs_fetchVariables *v = (struct rxfs_fetchVariables *)r;
750 tlen = (size > AFS_LRALLOCSIZ ? AFS_LRALLOCSIZ : size);
752 code = rx_Read(v->call, v->tbuffer, tlen);
761 rxfs_fetchMemRead(void *r, afs_uint32 tlen, afs_uint32 *bytesread)
764 struct rxfs_fetchVariables *v = (struct rxfs_fetchVariables *)r;
768 code = rx_Readv(v->call, v->iov, &v->nio, RX_MAXIOVECS, tlen);
778 rxfs_fetchMemWrite(void *r, struct osi_file *fP,
779 afs_uint32 offset, afs_uint32 tlen,
780 afs_uint32 *byteswritten)
783 struct rxfs_fetchVariables *v = (struct rxfs_fetchVariables *)r;
784 struct memCacheEntry *mceP = (struct memCacheEntry *)fP;
786 code = afs_MemWritevBlk(mceP, offset, v->iov, v->nio, tlen);
790 *byteswritten = code;
795 rxfs_fetchUfsWrite(void *r, struct osi_file *fP,
796 afs_uint32 offset, afs_uint32 tlen,
797 afs_uint32 *byteswritten)
800 struct rxfs_fetchVariables *v = (struct rxfs_fetchVariables *)r;
802 code = afs_osi_Write(fP, -1, v->tbuffer, tlen);
806 *byteswritten = code;
812 rxfs_fetchClose(void *r, struct vcache *avc, struct dcache * adc,
813 struct afs_FetchOutput *o)
815 afs_int32 code, code1 = 0;
816 struct rxfs_fetchVariables *v = (struct rxfs_fetchVariables *)r;
822 #ifdef AFS_64BIT_CLIENT
824 code = EndRXAFS_FetchData64(v->call, &o->OutStatus, &o->CallBack,
828 code = EndRXAFS_FetchData(v->call, &o->OutStatus, &o->CallBack,
830 code1 = rx_EndCall(v->call, code);
841 rxfs_fetchDestroy(void **r, afs_int32 error)
843 afs_int32 code = error;
844 struct rxfs_fetchVariables *v = (struct rxfs_fetchVariables *)*r;
849 code = rx_EndCall(v->call, error);
855 osi_FreeLargeSpace(v->tbuffer);
857 osi_FreeSmallSpace(v->iov);
858 osi_FreeSmallSpace(v);
863 rxfs_fetchMore(void *r, afs_int32 *length, afs_uint32 *moredata)
866 struct rxfs_fetchVariables *v = (struct rxfs_fetchVariables *)r;
869 * The fetch protocol is extended for the AFS/DFS translator
870 * to allow multiple blocks of data, each with its own length,
871 * to be returned. As long as the top bit is set, there are more
874 * We do not do this for AFS file servers because they sometimes
875 * return large negative numbers as the transfer size.
879 code = rx_Read(v->call, (void *)length, sizeof(afs_int32));
881 *length = ntohl(*length);
882 if (code != sizeof(afs_int32)) {
883 code = rx_Error(v->call);
885 return (code ? code : -1); /* try to return code, not -1 */
888 *moredata = *length & 0x80000000;
889 *length &= ~0x80000000;
894 struct fetchOps rxfs_fetchUfsOps = {
903 struct fetchOps rxfs_fetchMemOps = {
912 rxfs_fetchInit(struct afs_conn *tc, struct vcache *avc, afs_offs_t base,
913 afs_uint32 size, afs_int32 *alength, struct dcache *adc,
914 struct osi_file *fP, struct fetchOps **ops, void **rock)
916 struct rxfs_fetchVariables *v;
917 int code = 0, code1 = 0;
918 #ifdef AFS_64BIT_CLIENT
919 afs_uint32 length_hi = 0;
921 afs_uint32 length, bytes;
923 v = (struct rxfs_fetchVariables *) osi_AllocSmallSpace(sizeof(struct rxfs_fetchVariables));
925 osi_Panic("rxfs_fetchInit: osi_AllocSmallSpace returned NULL\n");
926 memset(v, 0, sizeof(struct rxfs_fetchVariables));
929 v->call = rx_NewCall(tc->id);
932 #ifdef AFS_64BIT_CLIENT
933 afs_size_t length64; /* as returned from server */
934 if (!afs_serverHasNo64Bit(tc)) {
935 afs_uint64 llbytes = size;
937 code = StartRXAFS_FetchData64(v->call, (struct AFSFid *) &avc->f.fid.Fid,
941 afs_Trace2(afs_iclSetp, CM_TRACE_FETCH64CODE,
942 ICL_TYPE_POINTER, avc, ICL_TYPE_INT32, code);
944 bytes = rx_Read(v->call, (char *)&length_hi, sizeof(afs_int32));
946 if (bytes == sizeof(afs_int32)) {
947 length_hi = ntohl(length_hi);
949 code = rx_Error(v->call);
951 code1 = rx_EndCall(v->call, code);
957 if (code == RXGEN_OPCODE || afs_serverHasNo64Bit(tc)) {
958 if (base > 0x7FFFFFFF) {
965 v->call = rx_NewCall(tc->id);
967 StartRXAFS_FetchData(
968 v->call, (struct AFSFid*)&avc->f.fid.Fid,
972 afs_serverSetNo64Bit(tc);
976 bytes = rx_Read(v->call, (char *)&length, sizeof(afs_int32));
978 if (bytes == sizeof(afs_int32))
979 length = ntohl(length);
982 code = rx_Error(v->call);
983 code1 = rx_EndCall(v->call, code);
988 FillInt64(length64, length_hi, length);
989 afs_Trace3(afs_iclSetp, CM_TRACE_FETCH64LENG,
990 ICL_TYPE_POINTER, avc, ICL_TYPE_INT32, code,
992 ICL_HANDLE_OFFSET(length64));
994 #else /* AFS_64BIT_CLIENT */
996 code = StartRXAFS_FetchData(v->call, (struct AFSFid *)&avc->f.fid.Fid,
1002 rx_Read(v->call, (char *)&length, sizeof(afs_int32));
1004 if (bytes == sizeof(afs_int32)) {
1005 *alength = ntohl(length);
1007 code = rx_Error(v->call);
1008 code1 = rx_EndCall(v->call, code);
1012 #endif /* AFS_64BIT_CLIENT */
1016 /* We need to cast here, in order to avoid issues if *alength is
1017 * negative. Some, older, fileservers can return a negative length,
1018 * which the rest of the code deals correctly with. */
1019 if (code == 0 && *alength > (afs_int32) size) {
1020 /* The fileserver told us it is going to send more data than we
1021 * requested. It shouldn't do that, and accepting that much data
1022 * can make us take up more cache space than we're supposed to,
1024 code = rx_Error(v->call);
1026 code1 = rx_EndCall(v->call, code);
1036 osi_FreeSmallSpace(v);
1039 if (cacheDiskType == AFS_FCACHE_TYPE_UFS) {
1040 v->tbuffer = osi_AllocLargeSpace(AFS_LRALLOCSIZ);
1042 osi_Panic("rxfs_fetchInit: osi_AllocLargeSpace for iovecs returned NULL\n");
1043 osi_Assert(WriteLocked(&adc->lock));
1045 *ops = (struct fetchOps *) &rxfs_fetchUfsOps;
1048 afs_Trace4(afs_iclSetp, CM_TRACE_MEMFETCH, ICL_TYPE_POINTER, avc,
1049 ICL_TYPE_POINTER, fP, ICL_TYPE_OFFSET,
1050 ICL_HANDLE_OFFSET(base), ICL_TYPE_INT32, length);
1052 * We need to alloc the iovecs on the heap so that they are "pinned"
1053 * rather than declare them on the stack - defect 11272
1055 v->iov = osi_AllocSmallSpace(sizeof(struct iovec) * RX_MAXIOVECS);
1057 osi_Panic("rxfs_fetchInit: osi_AllocSmallSpace for iovecs returned NULL\n");
1058 *ops = (struct fetchOps *) &rxfs_fetchMemOps;
1066 * Routine called on fetch; also tells people waiting for data
1067 * that more has arrived.
1069 * \param tc Ptr to the Rx connection structure.
1070 * \param fP File descriptor for the cache file.
1071 * \param base Base offset to fetch.
1072 * \param adc Ptr to the dcache entry for the file, write-locked.
1073 * \param avc Ptr to the vcache entry for the file.
1074 * \param size Amount of data that should be fetched.
1075 * \param tsmall Ptr to the afs_FetchOutput structure.
1077 * \note Environment: Nothing interesting.
1080 afs_CacheFetchProc(struct afs_conn *tc, struct osi_file *fP, afs_size_t base,
1081 struct dcache *adc, struct vcache *avc, afs_int32 size,
1082 struct afs_FetchOutput *tsmall)
1086 afs_uint32 bytesread, byteswritten;
1087 struct fetchOps *ops = NULL;
1089 afs_uint32 moredata = 0;
1094 osi_timeval_t xferStartTime; /*FS xfer start time */
1095 afs_size_t bytesToXfer = 0, bytesXferred = 0;
1098 AFS_STATCNT(CacheFetchProc);
1100 XSTATS_START_TIME(AFS_STATS_FS_RPCIDX_FETCHDATA);
1104 * avc->lock(R) if setLocks && !slowPass
1105 * avc->lock(W) if !setLocks || slowPass
1108 code = rxfs_fetchInit(
1109 tc, avc, base, size, &length, adc, fP, &ops, &rock);
1112 osi_GetuTime(&xferStartTime);
1113 #endif /* AFS_NOSTATS */
1116 adc->validPos = base;
1120 if (avc->f.states & CForeign) {
1121 code = (*ops->more)(rock, &length, &moredata);
1126 bytesToXfer += length;
1127 #endif /* AFS_NOSTATS */
1128 while (length > 0) {
1129 #ifdef RX_KERNEL_TRACE
1130 afs_Trace1(afs_iclSetp, CM_TRACE_TIMESTAMP, ICL_TYPE_STRING,
1133 code = (*ops->read)(rock, length, &bytesread);
1134 #ifdef RX_KERNEL_TRACE
1135 afs_Trace1(afs_iclSetp, CM_TRACE_TIMESTAMP, ICL_TYPE_STRING,
1139 bytesXferred += bytesread;
1140 #endif /* AFS_NOSTATS */
1142 afs_Trace3(afs_iclSetp, CM_TRACE_FETCH64READ,
1143 ICL_TYPE_POINTER, avc, ICL_TYPE_INT32, code,
1144 ICL_TYPE_INT32, length);
1148 code = (*ops->write)(rock, fP, offset, bytesread, &byteswritten);
1151 offset += bytesread;
1153 length -= bytesread;
1154 adc->validPos = base;
1155 if (afs_osi_Wakeup(&adc->validPos) == 0)
1156 afs_Trace4(afs_iclSetp, CM_TRACE_DCACHEWAKE, ICL_TYPE_STRING,
1157 __FILE__, ICL_TYPE_INT32, __LINE__,
1158 ICL_TYPE_POINTER, adc, ICL_TYPE_INT32,
1164 code = (*ops->close)(rock, avc, adc, tsmall);
1166 (*ops->destroy)(&rock, code);
1169 FillStoreStats(code, AFS_STATS_FS_XFERIDX_FETCHDATA, &xferStartTime,
1170 bytesToXfer, bytesXferred);