src/afs/afs_fetchstore.c

   1 /*
   2  * Copyright 2000, International Business Machines Corporation and others.
   3  * All Rights Reserved.
   4  *
   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
   8  */
   9
  10 #include <afsconfig.h>
  11 #include "afs/param.h"
  12
  13 #include "afs/sysincludes.h"    /* Standard vendor system headers */
  14 #ifdef  AFS_ALPHA_ENV
  15 #undef kmem_alloc
  16 #undef kmem_free
  17 #undef mem_alloc
  18 #undef mem_free
  19 #endif /* AFS_ALPHA_ENV */
  20 #include "afsincludes.h"        /* Afs-based standard headers */
  21 #include "afs/afs_stats.h"      /* statistics */
  22 #include "afs_prototypes.h"
  23
  24 extern int cacheDiskType;
  25
  26 #ifndef AFS_NOSTATS
  27 static void
  28 FillStoreStats(int code, int idx, osi_timeval_t xferStartTime,
  29                afs_size_t bytesToXfer, afs_size_t bytesXferred)
  30 {
  31     struct afs_stats_xferData *xferP;
  32     osi_timeval_t xferStopTime;
  33     osi_timeval_t elapsedTime;
  34
  35     xferP = &(afs_stats_cmfullperf.rpc.fsXferTimes[idx]);
  36     osi_GetuTime(&xferStopTime);
  37     (xferP->numXfers)++;
  38     if (!code) {
  39         (xferP->numSuccesses)++;
  40         afs_stats_XferSumBytes[idx] += bytesXferred;
  41         (xferP->sumBytes) += (afs_stats_XferSumBytes[idx] >> 10);
  42         afs_stats_XferSumBytes[idx] &= 0x3FF;
  43         if (bytesXferred < xferP->minBytes)
  44             xferP->minBytes = bytesXferred;
  45         if (bytesXferred > xferP->maxBytes)
  46             xferP->maxBytes = bytesXferred;
  47
  48         /*
  49          * Tally the size of the object.  Note: we tally the actual size,
  50          * NOT the number of bytes that made it out over the wire.
  51          */
  52         if (bytesToXfer <= AFS_STATS_MAXBYTES_BUCKET0) (xferP->count[0])++;
  53         else if (bytesToXfer <= AFS_STATS_MAXBYTES_BUCKET1) (xferP->count[1])++;
  54         else if (bytesToXfer <= AFS_STATS_MAXBYTES_BUCKET2) (xferP->count[2])++;
  55         else if (bytesToXfer <= AFS_STATS_MAXBYTES_BUCKET3) (xferP->count[3])++;
  56         else if (bytesToXfer <= AFS_STATS_MAXBYTES_BUCKET4) (xferP->count[4])++;
  57         else if (bytesToXfer <= AFS_STATS_MAXBYTES_BUCKET5) (xferP->count[5])++;
  58         else if (bytesToXfer <= AFS_STATS_MAXBYTES_BUCKET6) (xferP->count[6])++;
  59         else if (bytesToXfer <= AFS_STATS_MAXBYTES_BUCKET7) (xferP->count[7])++;
  60         else
  61             (xferP->count[8])++;
  62
  63         afs_stats_GetDiff(elapsedTime, xferStartTime, xferStopTime);
  64         afs_stats_AddTo((xferP->sumTime), elapsedTime);
  65         afs_stats_SquareAddTo((xferP->sqrTime), elapsedTime);
  66         if (afs_stats_TimeLessThan(elapsedTime, (xferP->minTime))) {
  67             afs_stats_TimeAssign((xferP->minTime), elapsedTime);
  68         }
  69         if (afs_stats_TimeGreaterThan(elapsedTime, (xferP->maxTime))) {
  70             afs_stats_TimeAssign((xferP->maxTime), elapsedTime);
  71         }
  72     }
  73 }
  74 #endif /* AFS_NOSTATS */
  75
  76 /* rock and operations for RX_FILESERVER */
  77
  78
  79
  80 afs_int32
  81 rxfs_storeUfsPrepare(void *r, afs_uint32 size, afs_uint32 *tlen)
  82 {
  83     *tlen = (size > AFS_LRALLOCSIZ ?  AFS_LRALLOCSIZ : size);
  84     return 0;
  85 }
  86
  87 afs_int32
  88 rxfs_storeMemPrepare(void *r, afs_uint32 size, afs_uint32 *tlen)
  89 {
  90     afs_int32 code;
  91     struct rxfs_storeVariables *v = (struct rxfs_storeVariables *) r;
  92
  93     RX_AFS_GUNLOCK();
  94     code = rx_WritevAlloc(v->call, v->tiov, &v->tnio, RX_MAXIOVECS, size);
  95     RX_AFS_GLOCK();
  96     if (code <= 0) {
  97         code = rx_Error(v->call);
  98         if (!code)
  99             code = -33;
 100     }
 101     else {
 102         *tlen = code;
 103         code = 0;
 104     }
 105     return code;
 106 }
 107
 108 afs_int32
 109 rxfs_storeUfsRead(void *r, struct osi_file *tfile, afs_uint32 offset,
 110                   afs_uint32 tlen, afs_uint32 *bytesread)
 111 {
 112     afs_int32 code;
 113     struct rxfs_storeVariables *v = (struct rxfs_storeVariables *)r;
 114
 115     *bytesread = 0;
 116     code = afs_osi_Read(tfile, -1, v->tbuffer, tlen);
 117     if (code < 0)
 118         return EIO;
 119     *bytesread = code;
 120     if (code == tlen)
 121         return 0;
 122 #if defined(KERNEL_HAVE_UERROR)
 123     if (getuerror())
 124         return EIO;
 125 #endif
 126     return 0;
 127 }
 128
 129 afs_int32
 130 rxfs_storeMemRead(void *r, struct osi_file *tfile, afs_uint32 offset,
 131                   afs_uint32 tlen, afs_uint32 *bytesread)
 132 {
 133     afs_int32 code;
 134     struct rxfs_storeVariables *v = (struct rxfs_storeVariables *)r;
 135     struct memCacheEntry *mceP = (struct memCacheEntry *)tfile;
 136
 137     *bytesread = 0;
 138     code = afs_MemReadvBlk(mceP, offset, v->tiov, v->tnio, tlen);
 139     if (code != tlen)
 140         return -33;
 141     *bytesread = code;
 142     return 0;
 143 }
 144
 145 afs_int32
 146 rxfs_storeMemWrite(void *r, afs_uint32 l, afs_uint32 *byteswritten)
 147 {
 148     afs_int32 code;
 149     struct rxfs_storeVariables *v = (struct rxfs_storeVariables *)r;
 150
 151     RX_AFS_GUNLOCK();
 152     code = rx_Writev(v->call, v->tiov, v->tnio, l);
 153     RX_AFS_GLOCK();
 154     if (code != l) {
 155         code = rx_Error(v->call);
 156         return (code ? code : -33);
 157     }
 158     *byteswritten = code;
 159     return 0;
 160 }
 161
 162 afs_int32
 163 rxfs_storeUfsWrite(void *r, afs_uint32 l, afs_uint32 *byteswritten)
 164 {
 165     afs_int32 code;
 166     struct rxfs_storeVariables *v = (struct rxfs_storeVariables *)r;
 167
 168     RX_AFS_GUNLOCK();
 169     code = rx_Write(v->call, v->tbuffer, l);
 170         /* writing 0 bytes will
 171          * push a short packet.  Is that really what we want, just because the
 172          * data didn't come back from the disk yet?  Let's try it and see. */
 173     RX_AFS_GLOCK();
 174     if (code != l) {
 175         code = rx_Error(v->call);
 176         return (code ? code : -33);
 177     }
 178     *byteswritten = code;
 179     return 0;
 180 }
 181
 182 afs_int32
 183 rxfs_storePadd(void *rock, afs_uint32 size)
 184 {
 185     afs_int32 code = 0;
 186     afs_uint32 tlen;
 187     struct rxfs_storeVariables *v = (struct rxfs_storeVariables *)rock;
 188
 189     if (!v->tbuffer)
 190         v->tbuffer = osi_AllocLargeSpace(AFS_LRALLOCSIZ);
 191     memset(v->tbuffer, 0, AFS_LRALLOCSIZ);
 192
 193     while (size) {
 194         tlen = (size > AFS_LRALLOCSIZ ? AFS_LRALLOCSIZ : size);
 195         RX_AFS_GUNLOCK();
 196         code = rx_Write(v->call, v->tbuffer, tlen);
 197         RX_AFS_GLOCK();
 198
 199         if (code != tlen)
 200             return -33; /* XXX */
 201         size -= tlen;
 202     }
 203     return 0;
 204 }
 205
 206 afs_int32
 207 rxfs_storeStatus(void *rock)
 208 {
 209     struct rxfs_storeVariables *v = (struct rxfs_storeVariables *)rock;
 210
 211     if (rx_GetRemoteStatus(v->call) & 1)
 212         return 0;
 213     return 1;
 214 }
 215
 216 afs_int32
 217 rxfs_storeClose(void *r, struct AFSFetchStatus *OutStatus, int *doProcessFS)
 218 {
 219     afs_int32 code;
 220     struct AFSVolSync tsync;
 221     struct rxfs_storeVariables *v = (struct rxfs_storeVariables *)r;
 222
 223     if (!v->call)
 224         return -1;
 225     RX_AFS_GUNLOCK();
 226 #ifdef AFS_64BIT_CLIENT
 227     if (!v->hasNo64bit)
 228         code = EndRXAFS_StoreData64(v->call, OutStatus, &tsync);
 229     else
 230 #endif
 231         code = EndRXAFS_StoreData(v->call, OutStatus, &tsync);
 232     RX_AFS_GLOCK();
 233     if (!code)
 234         *doProcessFS = 1;       /* Flag to run afs_ProcessFS() later on */
 235
 236     return code;
 237 }
 238
 239 afs_int32
 240 rxfs_storeDestroy(void **r, afs_int32 code)
 241 {
 242     struct rxfs_storeVariables *v = (struct rxfs_storeVariables *)*r;
 243
 244     *r = NULL;
 245     if (v->call) {
 246         RX_AFS_GUNLOCK();
 247         code = rx_EndCall(v->call, code);
 248         RX_AFS_GLOCK();
 249     }
 250     if (v->tbuffer)
 251         osi_FreeLargeSpace(v->tbuffer);
 252     if (v->tiov)
 253         osi_FreeSmallSpace(v->tiov);
 254     osi_FreeSmallSpace(v);
 255     return code;
 256 }
 257
 258 afs_int32
 259 afs_GenericStoreProc(struct storeOps *ops, void *rock,
 260                      struct dcache *tdc, int *shouldwake,
 261                      afs_size_t *bytesXferred)
 262 {
 263     struct rxfs_storeVariables *svar = rock;
 264     afs_uint32 tlen, bytesread, byteswritten;
 265     afs_int32 code = 0;
 266     int offset = 0;
 267     afs_size_t size;
 268     struct osi_file *tfile;
 269
 270     size = tdc->f.chunkBytes;
 271
 272     tfile = afs_CFileOpen(&tdc->f.inode);
 273     osi_Assert(tfile);
 274
 275     while ( size > 0 ) {
 276         code = (*ops->prepare)(rock, size, &tlen);
 277         if ( code )
 278             break;
 279
 280         code = (*ops->read)(rock, tfile, offset, tlen, &bytesread);
 281         if (code)
 282             break;
 283
 284         tlen = bytesread;
 285         code = (*ops->write)(rock, tlen, &byteswritten);
 286         if (code)
 287             break;
 288 #ifndef AFS_NOSTATS
 289         *bytesXferred += byteswritten;
 290 #endif /* AFS_NOSTATS */
 291
 292         offset += tlen;
 293         size -= tlen;
 294         /*
 295          * if file has been locked on server, can allow
 296          * store to continue
 297          */
 298         if (shouldwake && *shouldwake && ((*ops->status)(rock) == 0)) {
 299             *shouldwake = 0;    /* only do this once */
 300             afs_wakeup(svar->vcache);
 301         }
 302     }
 303     afs_CFileClose(tfile);
 304
 305     return code;
 306 }
 307
 308 static
 309 struct storeOps rxfs_storeUfsOps = {
 310 #ifndef HAVE_STRUCT_LABEL_SUPPORT
 311     rxfs_storeUfsPrepare,
 312     rxfs_storeUfsRead,
 313     rxfs_storeUfsWrite,
 314     rxfs_storeStatus,
 315     rxfs_storePadd,
 316     rxfs_storeClose,
 317     rxfs_storeDestroy,
 318     afs_GenericStoreProc
 319 #else
 320     .prepare =  rxfs_storeUfsPrepare,
 321     .read =     rxfs_storeUfsRead,
 322     .write =    rxfs_storeUfsWrite,
 323     .status =   rxfs_storeStatus,
 324     .padd =     rxfs_storePadd,
 325     .close =    rxfs_storeClose,
 326     .destroy =  rxfs_storeDestroy,
 327     .storeproc = afs_GenericStoreProc
 328 #endif
 329 };
 330
 331 static
 332 struct storeOps rxfs_storeMemOps = {
 333 #ifndef HAVE_STRUCT_LABEL_SUPPORT
 334     rxfs_storeMemPrepare,
 335     rxfs_storeMemRead,
 336     rxfs_storeMemWrite,
 337     rxfs_storeStatus,
 338     rxfs_storePadd,
 339     rxfs_storeClose,
 340     rxfs_storeDestroy,
 341     afs_GenericStoreProc
 342 #else
 343     .prepare =  rxfs_storeMemPrepare,
 344     .read =     rxfs_storeMemRead,
 345     .write =    rxfs_storeMemWrite,
 346     .status =   rxfs_storeStatus,
 347     .padd =     rxfs_storePadd,
 348     .close =    rxfs_storeClose,
 349     .destroy =  rxfs_storeDestroy,
 350     .storeproc = afs_GenericStoreProc
 351 #endif
 352 };
 353
 354 afs_int32
 355 rxfs_storeInit(struct vcache *avc, struct afs_conn *tc,
 356                 struct rx_connection *rxconn, afs_size_t base,
 357                 afs_size_t bytes, afs_size_t length,
 358                 int sync, struct storeOps **ops, void **rock)
 359 {
 360     afs_int32 code;
 361     struct rxfs_storeVariables *v;
 362
 363     if ( !tc )
 364         return -1;
 365
 366     v = osi_AllocSmallSpace(sizeof(struct rxfs_storeVariables));
 367     if (!v)
 368         osi_Panic("rxfs_storeInit: osi_AllocSmallSpace returned NULL\n");
 369     memset(v, 0, sizeof(struct rxfs_storeVariables));
 370
 371     v->InStatus.ClientModTime = avc->f.m.Date;
 372     v->InStatus.Mask = AFS_SETMODTIME;
 373     v->vcache = avc;
 374     if (sync & AFS_SYNC)
 375         v->InStatus.Mask |= AFS_FSYNC;
 376     RX_AFS_GUNLOCK();
 377     v->call = rx_NewCall(rxconn);
 378     if (v->call) {
 379 #ifdef AFS_64BIT_CLIENT
 380         if (!afs_serverHasNo64Bit(tc))
 381             code = StartRXAFS_StoreData64(
 382                 v->call, (struct AFSFid*)&avc->f.fid.Fid,
 383                 &v->InStatus, base, bytes, length);
 384         else {
 385             if (length > 0xFFFFFFFF)
 386                 code = EFBIG;
 387             else {
 388                 afs_int32 t1 = base, t2 = bytes, t3 = length;
 389                 code = StartRXAFS_StoreData(v->call,
 390                                         (struct AFSFid *) &avc->f.fid.Fid,
 391                                          &v->InStatus, t1, t2, t3);
 392             }
 393             v->hasNo64bit = 1;
 394         }
 395 #else /* AFS_64BIT_CLIENT */
 396         code = StartRXAFS_StoreData(v->call, (struct AFSFid *)&avc->f.fid.Fid,
 397                                     &v->InStatus, base, bytes, length);
 398 #endif /* AFS_64BIT_CLIENT */
 399     } else
 400         code = -1;
 401     RX_AFS_GLOCK();
 402     if (code) {
 403         *rock = v;
 404         return rxfs_storeDestroy(rock, code);
 405     }
 406     if (cacheDiskType == AFS_FCACHE_TYPE_UFS) {
 407         v->tbuffer = osi_AllocLargeSpace(AFS_LRALLOCSIZ);
 408         if (!v->tbuffer)
 409             osi_Panic
 410             ("rxfs_storeInit: osi_AllocLargeSpace for iovecs returned NULL\n");
 411         *ops = (struct storeOps *) &rxfs_storeUfsOps;
 412     } else {
 413         v->tiov = osi_AllocSmallSpace(sizeof(struct iovec) * RX_MAXIOVECS);
 414         if (!v->tiov)
 415             osi_Panic
 416             ("rxfs_storeInit: osi_AllocSmallSpace for iovecs returned NULL\n");
 417         *ops = (struct storeOps *) &rxfs_storeMemOps;
 418 #ifdef notdef
 419         /* do this at a higher level now -- it's a parameter */
 420         /* for now, only do 'continue from close' code if file fits in one
 421          * chunk.  Could clearly do better: if only one modified chunk
 422          * then can still do this.  can do this on *last* modified chunk */
 423         length = avc->f.m.Length - 1; /* byte position of last byte we'll store */
 424         if (shouldWake) {
 425             if (AFS_CHUNK(length) != 0)
 426                 *shouldWake = 0;
 427             else
 428                 *shouldWake = 1;
 429         }
 430 #endif /* notdef */
 431     }
 432
 433     *rock = (void *)v;
 434     return 0;
 435 }
 436 unsigned int storeallmissing = 0;
 437 /*!
 438  *      Called for each chunk upon store.
 439  *
 440  * \param avc Ptr to the vcache entry of the file being stored.
 441  * \param dclist pointer to the list of dcaches
 442  * \param bytes total number of bytes for the current operation
 443  * \param anewDV Ptr to the dataversion after store
 444  * \param doProcessFS pointer to the "do process FetchStatus" flag
 445  * \param OutStatus pointer to the FetchStatus as returned by the fileserver
 446  * \param nchunks number of dcaches to consider
 447  * \param nomore copy of the "no more data" flag
 448  * \param ops pointer to the block of storeOps to be used for this operation
 449  * \param rock pointer to the opaque protocol-specific data of this operation
 450  */
 451 afs_int32
 452 afs_CacheStoreDCaches(struct vcache *avc, struct dcache **dclist,
 453                       afs_size_t bytes, afs_hyper_t *anewDV, int *doProcessFS,
 454                       struct AFSFetchStatus *OutStatus, afs_uint32 nchunks,
 455                       int nomore, struct storeOps *ops, void *rock)
 456 {
 457     int *shouldwake = NULL;
 458     unsigned int i;
 459     int stored = 0;
 460     afs_int32 code = 0;
 461     afs_size_t bytesXferred;
 462
 463 #ifndef AFS_NOSTATS
 464     osi_timeval_t xferStartTime;        /*FS xfer start time */
 465     afs_size_t bytesToXfer = 10000;     /* # bytes to xfer */
 466 #endif /* AFS_NOSTATS */
 467     XSTATS_DECLS;
 468     osi_Assert(nchunks != 0);
 469
 470     for (i = 0; i < nchunks && !code; i++) {
 471         struct dcache *tdc = dclist[i];
 472         afs_int32 size;
 473
 474         if (!tdc) {
 475             afs_warn("afs: missing dcache!\n");
 476             storeallmissing++;
 477             continue;   /* panic? */
 478         }
 479         size = tdc->f.chunkBytes;
 480         afs_Trace4(afs_iclSetp, CM_TRACE_STOREALL2, ICL_TYPE_POINTER, avc,
 481                     ICL_TYPE_INT32, tdc->f.chunk, ICL_TYPE_INT32, tdc->index,
 482                     ICL_TYPE_INT32, afs_inode2trace(&tdc->f.inode));
 483         shouldwake = 0;
 484         if (nomore) {
 485             if (avc->asynchrony == -1) {
 486                 if (afs_defaultAsynchrony > (bytes - stored))
 487                     shouldwake = &nomore;
 488             }
 489             else if ((afs_uint32) avc->asynchrony >= (bytes - stored))
 490                 shouldwake = &nomore;
 491         }
 492
 493         afs_Trace4(afs_iclSetp, CM_TRACE_STOREPROC, ICL_TYPE_POINTER, avc,
 494                     ICL_TYPE_FID, &(avc->f.fid), ICL_TYPE_OFFSET,
 495                     ICL_HANDLE_OFFSET(avc->f.m.Length), ICL_TYPE_INT32, size);
 496
 497         AFS_STATCNT(CacheStoreProc);
 498
 499         XSTATS_START_TIME(AFS_STATS_FS_RPCIDX_STOREDATA);
 500         avc->f.truncPos = AFS_NOTRUNC;
 501 #ifndef AFS_NOSTATS
 502         /*
 503          * In this case, size is *always* the amount of data we'll be trying
 504          * to ship here.
 505          */
 506         bytesToXfer = size;
 507
 508         osi_GetuTime(&xferStartTime);
 509 #endif /* AFS_NOSTATS */
 510         bytesXferred = 0;
 511
 512         code = (*ops->storeproc)(ops, rock, tdc, shouldwake,
 513                                      &bytesXferred);
 514
 515         afs_Trace4(afs_iclSetp, CM_TRACE_STOREPROC, ICL_TYPE_POINTER, avc,
 516                     ICL_TYPE_FID, &(avc->f.fid), ICL_TYPE_OFFSET,
 517                     ICL_HANDLE_OFFSET(avc->f.m.Length), ICL_TYPE_INT32, size);
 518
 519 #ifndef AFS_NOSTATS
 520         FillStoreStats(code, AFS_STATS_FS_XFERIDX_STOREDATA,
 521                     xferStartTime, bytesToXfer, bytesXferred);
 522 #endif /* AFS_NOSTATS */
 523
 524         if ((tdc->f.chunkBytes < afs_OtherCSize)
 525                 && (i < (nchunks - 1)) && code == 0) {
 526             code = (*ops->padd)(rock, afs_OtherCSize - tdc->f.chunkBytes);
 527         }
 528         stored += tdc->f.chunkBytes;
 529         /* ideally, I'd like to unlock the dcache and turn
 530          * off the writing bit here, but that would
 531          * require being able to retry StoreAllSegments in
 532          * the event of a failure. It only really matters
 533          * if user can't read from a 'locked' dcache or
 534          * one which has the writing bit turned on. */
 535     }
 536
 537     if (!code) {
 538         code = (*ops->close)(rock, OutStatus, doProcessFS);
 539         /* if this succeeds, dv has been bumped. */
 540         if (*doProcessFS) {
 541             hadd32(*anewDV, 1);
 542         }
 543         XSTATS_END_TIME;
 544     }
 545     if (ops)
 546         code = (*ops->destroy)(&rock, code);
 547
 548     /* if we errored, can't trust this. */
 549     if (code)
 550         *doProcessFS = 0;
 551
 552     return code;
 553 }
 554
 555 #define lmin(a,b) (((a) < (b)) ? (a) : (b))
 556 /*!
 557  *      Called upon store.
 558  *
 559  * \param dclist pointer to the list of dcaches
 560  * \param avc Ptr to the vcache entry.
 561  * \param areq Ptr to the request structure
 562  * \param sync sync flag
 563  * \param minj the chunk offset for this call
 564  * \param high index of last dcache to store
 565  * \param moredata the moredata flag
 566  * \param anewDV Ptr to the dataversion after store
 567  * \param amaxStoredLength Ptr to the amount of that is actually stored
 568  *
 569  * \note Environment: Nothing interesting.
 570  */
 571 int
 572 afs_CacheStoreVCache(struct dcache **dcList, struct vcache *avc,
 573                      struct vrequest *areq, int sync, unsigned int minj,
 574                      unsigned int high, unsigned int moredata,
 575                      afs_hyper_t *anewDV, afs_size_t *amaxStoredLength)
 576 {
 577     afs_int32 code = 0;
 578     struct storeOps *ops;
 579     void * rock = NULL;
 580     unsigned int i, j;
 581
 582     struct AFSFetchStatus OutStatus;
 583     int doProcessFS = 0;
 584     afs_size_t base, bytes, length;
 585     int nomore;
 586     unsigned int first = 0;
 587     struct afs_conn *tc;
 588     struct rx_connection *rxconn;
 589
 590     for (bytes = 0, j = 0; !code && j <= high; j++) {
 591         if (dcList[j]) {
 592             ObtainSharedLock(&(dcList[j]->lock), 629);
 593             if (!bytes)
 594                 first = j;
 595             bytes += dcList[j]->f.chunkBytes;
 596             if ((dcList[j]->f.chunkBytes < afs_OtherCSize)
 597                         && (dcList[j]->f.chunk - minj < high)
 598                         && dcList[j + 1]) {
 599                 int sbytes = afs_OtherCSize - dcList[j]->f.chunkBytes;
 600                 bytes += sbytes;
 601             }
 602         }
 603         if (bytes && (j == high || !dcList[j + 1])) {
 604             afs_uint32 nchunks;
 605             struct dcache **dclist = &dcList[first];
 606             /* base = AFS_CHUNKTOBASE(dcList[first]->f.chunk); */
 607             base = AFS_CHUNKTOBASE(first + minj);
 608             /*
 609              *
 610              * take a list of dcache structs and send them all off to the server
 611              * the list must be in order, and the chunks contiguous.
 612              * Note - there is no locking done by this code currently.  For
 613              * safety's sake, xdcache could be locked over the entire call.
 614              * However, that pretty well ties up all the threads.  Meantime, all
 615              * the chunks _MUST_ have their refcounts bumped.
 616              * The writes done before a store back will clear setuid-ness
 617              * in cache file.
 618              * We can permit CacheStoreProc to wake up the user process IFF we
 619              * are doing the last RPC for this close, ie, storing back the last
 620              * set of contiguous chunks of a file.
 621              */
 622
 623             nchunks = 1 + j - first;
 624             nomore = !(moredata || (j != high));
 625             length = lmin(avc->f.m.Length, avc->f.truncPos);
 626             afs_Trace4(afs_iclSetp, CM_TRACE_STOREDATA64,
 627                        ICL_TYPE_FID, &avc->f.fid.Fid, ICL_TYPE_OFFSET,
 628                        ICL_HANDLE_OFFSET(base), ICL_TYPE_OFFSET,
 629                        ICL_HANDLE_OFFSET(bytes), ICL_TYPE_OFFSET,
 630                        ICL_HANDLE_OFFSET(length));
 631
 632             do {
 633                 tc = afs_Conn(&avc->f.fid, areq, 0, &rxconn);
 634
 635 #ifdef AFS_64BIT_CLIENT
 636               restart:
 637 #endif
 638                 code = rxfs_storeInit(avc, tc, rxconn, base, bytes, length,
 639                                       sync, &ops, &rock);
 640                 if ( !code ) {
 641                     code = afs_CacheStoreDCaches(avc, dclist, bytes, anewDV,
 642                                                  &doProcessFS, &OutStatus,
 643                                                  nchunks, nomore, ops, rock);
 644                 }
 645
 646 #ifdef AFS_64BIT_CLIENT
 647                 if (code == RXGEN_OPCODE && !afs_serverHasNo64Bit(tc)) {
 648                     afs_serverSetNo64Bit(tc);
 649                     goto restart;
 650                 }
 651 #endif /* AFS_64BIT_CLIENT */
 652             } while (afs_Analyze
 653                      (tc, rxconn, code, &avc->f.fid, areq,
 654                       AFS_STATS_FS_RPCIDX_STOREDATA, SHARED_LOCK,
 655                       NULL));
 656
 657             /* put back all remaining locked dcache entries */
 658             for (i = 0; i < nchunks; i++) {
 659                 struct dcache *tdc = dclist[i];
 660                 if (!code) {
 661                     if (afs_indexFlags[tdc->index] & IFDataMod) {
 662                         /*
 663                          * LOCKXXX -- should hold afs_xdcache(W) when
 664                          * modifying afs_indexFlags.
 665                          */
 666                         afs_indexFlags[tdc->index] &= ~IFDataMod;
 667                         afs_stats_cmperf.cacheCurrDirtyChunks--;
 668                         afs_indexFlags[tdc->index] &= ~IFDirtyPages;
 669                         if (sync & AFS_VMSYNC_INVAL) {
 670                             /* since we have invalidated all the pages of this
 671                              ** vnode by calling osi_VM_TryToSmush, we can
 672                              ** safely mark this dcache entry as not having
 673                              ** any pages. This vnode now becomes eligible for
 674                              ** reclamation by getDownD.
 675                              */
 676                             afs_indexFlags[tdc->index] &= ~IFAnyPages;
 677                         }
 678                     }
 679                 }
 680                 UpgradeSToWLock(&tdc->lock, 628);
 681                 tdc->f.states &= ~DWriting;     /* correct? */
 682                 tdc->dflags |= DFEntryMod;
 683                 ReleaseWriteLock(&tdc->lock);
 684                 afs_PutDCache(tdc);
 685                 /* Mark the entry as released */
 686                 dclist[i] = NULL;
 687             }
 688
 689             if (doProcessFS) {
 690                 /* Now copy out return params */
 691                 UpgradeSToWLock(&avc->lock, 28);        /* keep out others for a while */
 692                 afs_ProcessFS(avc, &OutStatus, areq);
 693                 /* Keep last (max) size of file on server to see if
 694                  * we need to call afs_StoreMini to extend the file.
 695                  */
 696                 if (!moredata)
 697                     *amaxStoredLength = OutStatus.Length;
 698                 ConvertWToSLock(&avc->lock);
 699                 doProcessFS = 0;
 700             }
 701
 702             if (code) {
 703                 for (j++; j <= high; j++) {
 704                     if (dcList[j]) {
 705                         ReleaseSharedLock(&(dcList[j]->lock));
 706                         afs_PutDCache(dcList[j]);
 707                         /* Releasing entry */
 708                         dcList[j] = NULL;
 709                     }
 710                 }
 711             }
 712
 713             afs_Trace2(afs_iclSetp, CM_TRACE_STOREALLDCDONE,
 714                        ICL_TYPE_POINTER, avc, ICL_TYPE_INT32, code);
 715             bytes = 0;
 716         }
 717     }
 718
 719     return code;
 720 }
 721
 722 /* rock and operations for RX_FILESERVER */
 723
 724 struct rxfs_fetchVariables {
 725     struct rx_call *call;
 726     char *tbuffer;
 727     struct iovec *iov;
 728     afs_int32 nio;
 729     afs_int32 hasNo64bit;
 730     afs_int32 iovno;
 731     afs_int32 iovmax;
 732 };
 733
 734 afs_int32
 735 rxfs_fetchUfsRead(void *r, afs_uint32 size, afs_uint32 *bytesread)
 736 {
 737     afs_int32 code;
 738     afs_uint32 tlen;
 739     struct rxfs_fetchVariables *v = (struct rxfs_fetchVariables *)r;
 740
 741     *bytesread = 0;
 742     tlen = (size > AFS_LRALLOCSIZ ?  AFS_LRALLOCSIZ : size);
 743     RX_AFS_GUNLOCK();
 744     code = rx_Read(v->call, v->tbuffer, tlen);
 745     RX_AFS_GLOCK();
 746     if (code <= 0)
 747         return -34;
 748     *bytesread = code;
 749     return 0;
 750 }
 751
 752 afs_int32
 753 rxfs_fetchMemRead(void *r, afs_uint32 tlen, afs_uint32 *bytesread)
 754 {
 755     afs_int32 code;
 756     struct rxfs_fetchVariables *v = (struct rxfs_fetchVariables *)r;
 757
 758     *bytesread = 0;
 759     RX_AFS_GUNLOCK();
 760     code = rx_Readv(v->call, v->iov, &v->nio, RX_MAXIOVECS, tlen);
 761     RX_AFS_GLOCK();
 762     if (code <= 0)
 763         return -34;
 764     *bytesread = code;
 765     return 0;
 766 }
 767
 768
 769 afs_int32
 770 rxfs_fetchMemWrite(void *r, struct osi_file *fP, afs_uint32 offset,
 771                    afs_uint32 tlen, afs_uint32 *byteswritten)
 772 {
 773     afs_int32 code;
 774     struct rxfs_fetchVariables *v = (struct rxfs_fetchVariables *)r;
 775     struct memCacheEntry *mceP = (struct memCacheEntry *)fP;
 776
 777     code = afs_MemWritevBlk(mceP, offset, v->iov, v->nio, tlen);
 778     if (code != tlen) {
 779         return EIO;
 780     }
 781     *byteswritten = code;
 782     return 0;
 783 }
 784
 785 afs_int32
 786 rxfs_fetchUfsWrite(void *r, struct osi_file *fP, afs_uint32 offset,
 787                    afs_uint32 tlen, afs_uint32 *byteswritten)
 788 {
 789     afs_int32 code;
 790     struct rxfs_fetchVariables *v = (struct rxfs_fetchVariables *)r;
 791
 792     code = afs_osi_Write(fP, -1, v->tbuffer, tlen);
 793     if (code != tlen) {
 794         return EIO;
 795     }
 796     *byteswritten = code;
 797     return 0;
 798 }
 799
 800
 801 afs_int32
 802 rxfs_fetchClose(void *r, struct vcache *avc, struct dcache * adc,
 803                 struct afs_FetchOutput *o)
 804 {
 805     afs_int32 code;
 806     struct rxfs_fetchVariables *v = (struct rxfs_fetchVariables *)r;
 807
 808     if (!v->call)
 809         return -1;
 810
 811     RX_AFS_GUNLOCK();
 812 #ifdef AFS_64BIT_CLIENT
 813     if (!v->hasNo64bit)
 814         code = EndRXAFS_FetchData64(v->call, &o->OutStatus, &o->CallBack,
 815                                 &o->tsync);
 816     else
 817 #endif
 818         code = EndRXAFS_FetchData(v->call, &o->OutStatus, &o->CallBack,
 819                                 &o->tsync);
 820     code = rx_EndCall(v->call, code);
 821     RX_AFS_GLOCK();
 822
 823     v->call = NULL;
 824
 825     return code;
 826 }
 827
 828 afs_int32
 829 rxfs_fetchDestroy(void **r, afs_int32 code)
 830 {
 831     struct rxfs_fetchVariables *v = (struct rxfs_fetchVariables *)*r;
 832
 833     *r = NULL;
 834     if (v->call) {
 835         RX_AFS_GUNLOCK();
 836         code = rx_EndCall(v->call, code);
 837         RX_AFS_GLOCK();
 838     }
 839     if (v->tbuffer)
 840         osi_FreeLargeSpace(v->tbuffer);
 841     if (v->iov)
 842         osi_FreeSmallSpace(v->iov);
 843     osi_FreeSmallSpace(v);
 844     return code;
 845 }
 846
 847 afs_int32
 848 rxfs_fetchMore(void *r, afs_int32 *length, afs_uint32 *moredata)
 849 {
 850     afs_int32 code;
 851     struct rxfs_fetchVariables *v = (struct rxfs_fetchVariables *)r;
 852
 853     /*
 854      * The fetch protocol is extended for the AFS/DFS translator
 855      * to allow multiple blocks of data, each with its own length,
 856      * to be returned. As long as the top bit is set, there are more
 857      * blocks expected.
 858      *
 859      * We do not do this for AFS file servers because they sometimes
 860      * return large negative numbers as the transfer size.
 861      */
 862     if (*moredata) {
 863         RX_AFS_GUNLOCK();
 864         code = rx_Read(v->call, (void *)length, sizeof(afs_int32));
 865         RX_AFS_GLOCK();
 866         *length = ntohl(*length);
 867         if (code != sizeof(afs_int32)) {
 868             code = rx_Error(v->call);
 869             *moredata = 0;
 870             return (code ? code : -1);  /* try to return code, not -1 */
 871         }
 872     }
 873     *moredata = *length & 0x80000000;
 874     *length &= ~0x80000000;
 875     return 0;
 876 }
 877
 878 static
 879 struct fetchOps rxfs_fetchUfsOps = {
 880     rxfs_fetchMore,
 881     rxfs_fetchUfsRead,
 882     rxfs_fetchUfsWrite,
 883     rxfs_fetchClose,
 884     rxfs_fetchDestroy
 885 };
 886
 887 static
 888 struct fetchOps rxfs_fetchMemOps = {
 889     rxfs_fetchMore,
 890     rxfs_fetchMemRead,
 891     rxfs_fetchMemWrite,
 892     rxfs_fetchClose,
 893     rxfs_fetchDestroy
 894 };
 895
 896 afs_int32
 897 rxfs_fetchInit(struct afs_conn *tc, struct rx_connection *rxconn,
 898                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)
 901 {
 902     struct rxfs_fetchVariables *v;
 903     int code = 0;
 904 #ifdef AFS_64BIT_CLIENT
 905     afs_uint32 length_hi = 0;
 906 #endif
 907     afs_uint32 length = 0, bytes;
 908
 909     v = (struct rxfs_fetchVariables *)
 910             osi_AllocSmallSpace(sizeof(struct rxfs_fetchVariables));
 911     if (!v)
 912         osi_Panic("rxfs_fetchInit: osi_AllocSmallSpace returned NULL\n");
 913     memset(v, 0, sizeof(struct rxfs_fetchVariables));
 914
 915     RX_AFS_GUNLOCK();
 916     v->call = rx_NewCall(rxconn);
 917     RX_AFS_GLOCK();
 918     if (v->call) {
 919 #ifdef AFS_64BIT_CLIENT
 920         afs_size_t length64;     /* as returned from server */
 921         if (!afs_serverHasNo64Bit(tc)) {
 922             afs_uint64 llbytes = size;
 923             RX_AFS_GUNLOCK();
 924             code = StartRXAFS_FetchData64(v->call,
 925                                           (struct AFSFid *) &avc->f.fid.Fid,
 926                                           base, llbytes);
 927             if (code != 0) {
 928                 RX_AFS_GLOCK();
 929                 afs_Trace2(afs_iclSetp, CM_TRACE_FETCH64CODE,
 930                                ICL_TYPE_POINTER, avc, ICL_TYPE_INT32, code);
 931             } else {
 932                 bytes = rx_Read(v->call, (char *)&length_hi, sizeof(afs_int32));
 933                 RX_AFS_GLOCK();
 934                 if (bytes == sizeof(afs_int32)) {
 935                     length_hi = ntohl(length_hi);
 936                 } else {
 937                     RX_AFS_GUNLOCK();
 938                     code = rx_EndCall(v->call, RX_PROTOCOL_ERROR);
 939                     RX_AFS_GLOCK();
 940                     v->call = NULL;
 941                 }
 942             }
 943         }
 944         if (code == RXGEN_OPCODE || afs_serverHasNo64Bit(tc)) {
 945             if (base > 0x7FFFFFFF) {
 946                 code = EFBIG;
 947             } else {
 948                 afs_uint32 pos;
 949                 pos = base;
 950                 RX_AFS_GUNLOCK();
 951                 if (!v->call)
 952                     v->call = rx_NewCall(rxconn);
 953                 code =
 954                     StartRXAFS_FetchData(
 955                                 v->call, (struct AFSFid*)&avc->f.fid.Fid,
 956                                 pos, size);
 957                 RX_AFS_GLOCK();
 958             }
 959             afs_serverSetNo64Bit(tc);
 960             v->hasNo64bit = 1;
 961         }
 962         if (!code) {
 963             RX_AFS_GUNLOCK();
 964             bytes = rx_Read(v->call, (char *)&length, sizeof(afs_int32));
 965             RX_AFS_GLOCK();
 966             if (bytes == sizeof(afs_int32))
 967                 length = ntohl(length);
 968             else {
 969                 RX_AFS_GUNLOCK();
 970                 code = rx_EndCall(v->call, RX_PROTOCOL_ERROR);
 971                 v->call = NULL;
 972                 length = 0;
 973                 RX_AFS_GLOCK();
 974             }
 975         }
 976         FillInt64(length64, length_hi, length);
 977
 978         if (!code) {
 979             /* Check if the fileserver said our length is bigger than can fit
 980              * in a signed 32-bit integer. If it is, we can't handle that, so
 981              * error out. */
 982             if (length64 > MAX_AFS_INT32) {
 983                 static int warned;
 984                 if (!warned) {
 985                     warned = 1;
 986                     afs_warn("afs: Warning: FetchData64 returned too much data "
 987                              "(length64 %u.%u); this should not happen! "
 988                              "Aborting fetch request.\n",
 989                              length_hi, length);
 990                 }
 991                 RX_AFS_GUNLOCK();
 992                 code = rx_EndCall(v->call, RX_PROTOCOL_ERROR);
 993                 v->call = NULL;
 994                 length = 0;
 995                 RX_AFS_GLOCK();
 996                 code = code != 0 ? code : EIO;
 997             }
 998         }
 999
1000         if (!code) {
1001             /* Check if the fileserver said our length was negative. If it
1002              * is, just treat it as a 0 length, since some older fileservers
1003              * returned negative numbers when they meant to return 0. Note
1004              * that we must do this in this 64-bit-specific block, since
1005              * length64 being negative will screw up our conversion to the
1006              * 32-bit 'alength' below. */
1007             if (length64 < 0) {
1008                 length_hi = length = 0;
1009                 FillInt64(length64, 0, 0);
1010             }
1011         }
1012
1013         afs_Trace3(afs_iclSetp, CM_TRACE_FETCH64LENG,
1014                    ICL_TYPE_POINTER, avc, ICL_TYPE_INT32, code,
1015                    ICL_TYPE_OFFSET,
1016                    ICL_HANDLE_OFFSET(length64));
1017         if (!code)
1018             *alength = length;
1019 #else /* AFS_64BIT_CLIENT */
1020         RX_AFS_GUNLOCK();
1021         code = StartRXAFS_FetchData(v->call, (struct AFSFid *)&avc->f.fid.Fid,
1022                                      base, size);
1023         RX_AFS_GLOCK();
1024         if (code == 0) {
1025             RX_AFS_GUNLOCK();
1026             bytes =
1027                 rx_Read(v->call, (char *)&length, sizeof(afs_int32));
1028             RX_AFS_GLOCK();
1029             if (bytes == sizeof(afs_int32)) {
1030                 *alength = ntohl(length);
1031                 if (*alength < 0) {
1032                     /* Older fileservers can return a negative length when they
1033                      * meant to return 0; just assume negative lengths were
1034                      * meant to be 0 lengths. */
1035                     *alength = 0;
1036                 }
1037             } else {
1038                 code = rx_EndCall(v->call, RX_PROTOCOL_ERROR);
1039                 v->call = NULL;
1040             }
1041         }
1042 #endif /* AFS_64BIT_CLIENT */
1043     } else
1044         code = -1;
1045
1046     /* We need to cast here, in order to avoid issues if *alength is
1047      * negative. Some, older, fileservers can return a negative length,
1048      * which the rest of the code deals correctly with. */
1049     if (code == 0 && *alength > (afs_int32) size) {
1050         /* The fileserver told us it is going to send more data than we
1051          * requested. It shouldn't do that, and accepting that much data
1052          * can make us take up more cache space than we're supposed to,
1053          * so error. */
1054         static int warned;
1055         if (!warned) {
1056             warned = 1;
1057             afs_warn("afs: Warning: FetchData64 returned more data than "
1058                      "requested (requested %ld, got %ld); this should not "
1059                      "happen! Aborting fetch request.\n",
1060                      (long)size, (long)*alength);
1061         }
1062         RX_AFS_GUNLOCK();
1063         code = rx_EndCall(v->call, RX_PROTOCOL_ERROR);
1064         RX_AFS_GLOCK();
1065         v->call = NULL;
1066         code = EIO;
1067     }
1068
1069     if (code) {
1070         *rock = v;
1071         return rxfs_fetchDestroy(rock, code);
1072     }
1073     if (cacheDiskType == AFS_FCACHE_TYPE_UFS) {
1074         v->tbuffer = osi_AllocLargeSpace(AFS_LRALLOCSIZ);
1075         if (!v->tbuffer)
1076             osi_Panic("rxfs_fetchInit: osi_AllocLargeSpace for iovecs returned NULL\n");
1077         osi_Assert(WriteLocked(&adc->lock));
1078         fP->offset = 0;
1079         *ops = (struct fetchOps *) &rxfs_fetchUfsOps;
1080     }
1081     else {
1082         afs_Trace4(afs_iclSetp, CM_TRACE_MEMFETCH, ICL_TYPE_POINTER, avc,
1083                    ICL_TYPE_POINTER, fP, ICL_TYPE_OFFSET,
1084                    ICL_HANDLE_OFFSET(base), ICL_TYPE_INT32, length);
1085         /*
1086          * We need to alloc the iovecs on the heap so that they are "pinned"
1087          * rather than declare them on the stack - defect 11272
1088          */
1089         v->iov = osi_AllocSmallSpace(sizeof(struct iovec) * RX_MAXIOVECS);
1090         if (!v->iov)
1091             osi_Panic("rxfs_fetchInit: osi_AllocSmallSpace for iovecs returned NULL\n");
1092         *ops = (struct fetchOps *) &rxfs_fetchMemOps;
1093     }
1094     *rock = (void *)v;
1095     return 0;
1096 }
1097
1098
1099 /*!
1100  * Routine called on fetch; also tells people waiting for data
1101  *      that more has arrived.
1102  *
1103  * \param tc Ptr to the AFS connection structure.
1104  * \param rxconn Ptr to the Rx connection structure.
1105  * \param fP File descriptor for the cache file.
1106  * \param base Base offset to fetch.
1107  * \param adc Ptr to the dcache entry for the file, write-locked.
1108  * \param avc Ptr to the vcache entry for the file.
1109  * \param size Amount of data that should be fetched.
1110  * \param tsmall Ptr to the afs_FetchOutput structure.
1111  *
1112  * \note Environment: Nothing interesting.
1113  */
1114 int
1115 afs_CacheFetchProc(struct afs_conn *tc, struct rx_connection *rxconn,
1116                    struct osi_file *fP, afs_size_t base,
1117                    struct dcache *adc, struct vcache *avc, afs_int32 size,
1118                    struct afs_FetchOutput *tsmall)
1119 {
1120     afs_int32 code;
1121     afs_int32 length;
1122     afs_uint32 bytesread, byteswritten;
1123     struct fetchOps *ops = NULL;
1124     void *rock = NULL;
1125     afs_uint32 moredata = 0;
1126     int offset = 0;
1127
1128     XSTATS_DECLS;
1129 #ifndef AFS_NOSTATS
1130     osi_timeval_t xferStartTime;        /*FS xfer start time */
1131     afs_size_t bytesToXfer = 0, bytesXferred = 0;
1132 #endif
1133
1134     AFS_STATCNT(CacheFetchProc);
1135
1136     XSTATS_START_TIME(AFS_STATS_FS_RPCIDX_FETCHDATA);
1137
1138     /*
1139      * Locks held:
1140      * avc->lock(R) if setLocks && !slowPass
1141      * avc->lock(W) if !setLocks || slowPass
1142      * adc->lock(W)
1143      */
1144     code = rxfs_fetchInit(
1145                 tc, rxconn, avc, base, size, &length, adc, fP, &ops, &rock);
1146
1147 #ifndef AFS_NOSTATS
1148     osi_GetuTime(&xferStartTime);
1149 #endif /* AFS_NOSTATS */
1150
1151     adc->validPos = base;
1152
1153     if (code) {
1154         goto done;
1155     }
1156
1157     do {
1158         if (avc->f.states & CForeign) {
1159             code = (*ops->more)(rock, &length, &moredata);
1160             if ( code )
1161                 goto done;
1162         }
1163 #ifndef AFS_NOSTATS
1164         bytesToXfer += length;
1165 #endif /* AFS_NOSTATS */
1166         while (length > 0) {
1167 #ifdef RX_KERNEL_TRACE
1168             afs_Trace1(afs_iclSetp, CM_TRACE_TIMESTAMP, ICL_TYPE_STRING,
1169                        "before rx_Read");
1170 #endif
1171             code = (*ops->read)(rock, length, &bytesread);
1172 #ifdef RX_KERNEL_TRACE
1173             afs_Trace1(afs_iclSetp, CM_TRACE_TIMESTAMP, ICL_TYPE_STRING,
1174                        "after rx_Read");
1175 #endif
1176 #ifndef AFS_NOSTATS
1177             bytesXferred += bytesread;
1178 #endif /* AFS_NOSTATS */
1179             if ( code ) {
1180                 afs_Trace3(afs_iclSetp, CM_TRACE_FETCH64READ,
1181                            ICL_TYPE_POINTER, avc, ICL_TYPE_INT32, code,
1182                            ICL_TYPE_INT32, length);
1183                 code = -34;
1184                 goto done;
1185             }
1186             code = (*ops->write)(rock, fP, offset, bytesread, &byteswritten);
1187             if ( code )
1188                 goto done;
1189             offset += bytesread;
1190             base += bytesread;
1191             length -= bytesread;
1192             adc->validPos = base;
1193             if (afs_osi_Wakeup(&adc->validPos) == 0)
1194                 afs_Trace4(afs_iclSetp, CM_TRACE_DCACHEWAKE, ICL_TYPE_STRING,
1195                            __FILE__, ICL_TYPE_INT32, __LINE__,
1196                            ICL_TYPE_POINTER, adc, ICL_TYPE_INT32,
1197                            adc->dflags);
1198         }
1199         code = 0;
1200     } while (moredata);
1201  done:
1202     if (!code)
1203         code = (*ops->close)(rock, avc, adc, tsmall);
1204     if (ops)
1205         code = (*ops->destroy)(&rock, code);
1206
1207 #ifndef AFS_NOSTATS
1208     FillStoreStats(code, AFS_STATS_FS_XFERIDX_FETCHDATA, xferStartTime,
1209                         bytesToXfer, bytesXferred);
1210 #endif
1211     XSTATS_END_TIME;
1212     return code;
1213 }