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
14 * afs_StoreOnLastReference
19 #include <afsconfig.h>
20 #include "afs/param.h"
23 #include "afs/sysincludes.h" /* Standard vendor system headers */
24 #include "afsincludes.h" /* Afs-based standard headers */
25 #include "afs/afs_stats.h" /* statistics */
26 #include "afs/afs_cbqueue.h"
27 #include "afs/nfsclient.h"
28 #include "afs/afs_osidnlc.h"
31 extern unsigned char *afs_indexFlags;
33 /* Called by all write-on-close routines: regular afs_close,
34 * store via background daemon and store via the
35 * afs_FlushActiveVCaches routine (when CCORE is on).
36 * avc->lock must be write-locked.
39 afs_StoreOnLastReference(struct vcache *avc,
40 struct vrequest *treq)
44 AFS_STATCNT(afs_StoreOnLastReference);
45 /* if CCore flag is set, we clear it and do the extra decrement
46 * ourselves now. If we're called by the CCore clearer, the CCore
47 * flag will already be clear, so we don't have to worry about
48 * clearing it twice. */
49 if (avc->f.states & CCore) {
52 avc->f.states &= ~CCore;
53 #if defined(AFS_SGI_ENV)
54 osi_Assert(avc->opens > 0 && avc->execsOrWriters > 0);
56 /* WARNING: Our linux cm code treats the execsOrWriters counter differently
57 * depending on the flags the file was opened with. So, if you make any
58 * changes to the way the execsOrWriters flag is handled check with the
61 avc->execsOrWriters--;
62 AFS_RELE(AFSTOV(avc)); /* VN_HOLD at set CCore(afs_FakeClose) */
63 cred = (afs_ucred_t *)avc->linkData; /* "crheld" in afs_FakeClose */
68 if (!AFS_IS_DISCONNECTED) {
71 /* Now, send the file back. Used to require 0 writers left, but now do
72 * it on every close for write, since two closes in a row are harmless
73 * since first will clean all chunks, and second will be noop. Note that
74 * this will also save confusion when someone keeps a file open
75 * inadvertently, since with old system, writes to the server would never
78 code = afs_StoreAllSegments(avc, treq, AFS_LASTSTORE /*!sync-to-disk */ );
80 * We have to do these after the above store in done: in some systems
81 * like aix they'll need to flush all the vm dirty pages to the disk via
82 * the strategy routine. During that all procedure (done under no avc
83 * locks) opens, refcounts would be zero, since it didn't reach the
84 * afs_{rd,wr} routines which means the vcache is a perfect candidate
87 } else if (AFS_IS_DISCON_RW) {
88 afs_DisconAddDirty(avc, VDisconWriteClose, 0);
89 } /* if not disconnected */
91 #if defined(AFS_SGI_ENV)
92 osi_Assert(avc->opens > 0 && avc->execsOrWriters > 0);
96 avc->execsOrWriters--;
101 afs_UFSWriteUIO(struct vcache *avc, afs_dcache_id_t *inode, struct uio *tuiop)
103 struct osi_file *tfile;
106 tfile = (struct osi_file *)osi_UFSOpen(inode);
110 #if defined(AFS_AIX41_ENV)
112 code = VNOP_RDWR(tfile->vnode, UIO_WRITE, FWRITE, tuiop, NULL, NULL,
113 NULL, afs_osi_credp);
115 #elif defined(AFS_AIX32_ENV)
116 code = VNOP_RDWR(tfile->vnode, UIO_WRITE, FWRITE, tuiop, NULL, NULL);
117 #elif defined(AFS_AIX_ENV)
118 code = VNOP_RDWR(tfile->vnode, UIO_WRITE, FWRITE, (off_t) &offset,
119 tuiop, NULL, NULL, -1);
120 #elif defined(AFS_SUN5_ENV)
122 # ifdef AFS_SUN510_ENV
123 VOP_RWLOCK(tfile->vnode, 1, NULL);
124 code = VOP_WRITE(tfile->vnode, tuiop, 0, afs_osi_credp, NULL);
125 VOP_RWUNLOCK(tfile->vnode, 1, NULL);
127 VOP_RWLOCK(tfile->vnode, 1);
128 code = VOP_WRITE(tfile->vnode, tuiop, 0, afs_osi_credp);
129 VOP_RWUNLOCK(tfile->vnode, 1);
134 #elif defined(AFS_SGI_ENV)
136 avc->f.states |= CWritingUFS;
137 AFS_VOP_RWLOCK(tfile->vnode, VRWLOCK_WRITE);
138 AFS_VOP_WRITE(tfile->vnode, tuiop, IO_ISLOCKED, afs_osi_credp, code);
139 AFS_VOP_RWUNLOCK(tfile->vnode, VRWLOCK_WRITE);
140 avc->f.states &= ~CWritingUFS;
142 #elif defined(AFS_HPUX100_ENV)
145 code = VOP_RDWR(tfile->vnode, tuiop, UIO_WRITE, 0, afs_osi_credp);
148 #elif defined(AFS_LINUX20_ENV)
150 code = osi_rdwr(tfile, tuiop, UIO_WRITE);
152 #elif defined(AFS_DARWIN80_ENV)
154 code = VNOP_WRITE(tfile->vnode, tuiop, 0, afs_osi_ctxtp);
156 #elif defined(AFS_DARWIN_ENV)
158 VOP_LOCK(tfile->vnode, LK_EXCLUSIVE, current_proc());
159 code = VOP_WRITE(tfile->vnode, tuiop, 0, afs_osi_credp);
160 VOP_UNLOCK(tfile->vnode, 0, current_proc());
162 #elif defined(AFS_FBSD80_ENV)
164 VOP_LOCK(tfile->vnode, LK_EXCLUSIVE);
165 code = VOP_WRITE(tfile->vnode, tuiop, 0, afs_osi_credp);
166 VOP_UNLOCK(tfile->vnode, 0);
168 #elif defined(AFS_FBSD_ENV)
170 VOP_LOCK(tfile->vnode, LK_EXCLUSIVE, curthread);
171 code = VOP_WRITE(tfile->vnode, tuiop, 0, afs_osi_credp);
172 VOP_UNLOCK(tfile->vnode, 0, curthread);
174 #elif defined(AFS_NBSD_ENV)
176 VOP_LOCK(tfile->vnode, LK_EXCLUSIVE);
177 code = VOP_WRITE(tfile->vnode, tuiop, 0, afs_osi_credp);
178 #if defined(AFS_NBSD60_ENV)
179 VOP_UNLOCK(tfile->vnode);
181 VOP_UNLOCK(tfile->vnode, 0);
184 #elif defined(AFS_XBSD_ENV)
186 VOP_LOCK(tfile->vnode, LK_EXCLUSIVE, curproc);
187 code = VOP_WRITE(tfile->vnode, tuiop, 0, afs_osi_credp);
188 VOP_UNLOCK(tfile->vnode, 0, curproc);
192 tuio.uio_fpflags &= ~FSYNCIO; /* don't do sync io */
194 code = VOP_RDWR(tfile->vnode, tuiop, UIO_WRITE, 0, afs_osi_credp);
201 /* called on writes */
203 afs_write(struct vcache *avc, struct uio *auio, int aio,
204 afs_ucred_t *acred, int noLock)
206 afs_size_t totalLength;
207 afs_size_t transferLength;
209 afs_size_t offset, len;
219 #if defined(AFS_FBSD_ENV) || defined(AFS_DFBSD_ENV)
220 struct vnode *vp = AFSTOV(avc);
222 struct uio *tuiop = NULL;
224 struct vrequest *treq = NULL;
226 AFS_STATCNT(afs_write);
229 return avc->vc_error;
231 if (AFS_IS_DISCONNECTED && !AFS_IS_DISCON_RW)
234 startDate = osi_Time();
235 if ((code = afs_CreateReq(&treq, acred)))
237 /* otherwise we read */
238 totalLength = AFS_UIO_RESID(auio);
239 filePos = AFS_UIO_OFFSET(auio);
242 afs_Trace4(afs_iclSetp, CM_TRACE_WRITE, ICL_TYPE_POINTER, avc,
243 ICL_TYPE_OFFSET, ICL_HANDLE_OFFSET(filePos), ICL_TYPE_OFFSET,
244 ICL_HANDLE_OFFSET(totalLength), ICL_TYPE_OFFSET,
245 ICL_HANDLE_OFFSET(avc->f.m.Length));
247 afs_MaybeWakeupTruncateDaemon();
248 ObtainWriteLock(&avc->lock, 556);
250 #if defined(AFS_SGI_ENV)
254 * afs_xwrite handles setting m.Length
255 * and handles APPEND mode.
256 * Since we are called via strategy, we need to trim the write to
257 * the actual size of the file
259 osi_Assert(filePos <= avc->f.m.Length);
260 diff = avc->f.m.Length - filePos;
261 AFS_UIO_SETRESID(auio, MIN(totalLength, diff));
262 totalLength = AFS_UIO_RESID(auio);
265 if (aio & IO_APPEND) {
266 /* append mode, start it at the right spot */
267 #if defined(AFS_SUN5_ENV)
268 auio->uio_loffset = 0;
270 filePos = avc->f.m.Length;
271 AFS_UIO_SETOFFSET(auio, avc->f.m.Length);
275 * Note that we use startDate rather than calling osi_Time() here.
276 * This is to avoid counting lock-waiting time in file date (for ranlib).
278 avc->f.m.Date = startDate;
280 #if defined(AFS_HPUX_ENV)
281 #if defined(AFS_HPUX101_ENV)
282 if ((totalLength + filePos) >> 9 >
283 p_rlimit(u.u_procp)[RLIMIT_FSIZE].rlim_cur) {
285 if ((totalLength + filePos) >> 9 > u.u_rlimit[RLIMIT_FSIZE].rlim_cur) {
288 ReleaseWriteLock(&avc->lock);
289 afs_DestroyReq(treq);
293 #if defined(AFS_VM_RDWR_ENV) && !defined(AFS_FAKEOPEN_ENV)
295 * If write is implemented via VM, afs_FakeOpen() is called from the
296 * high-level write op.
298 if (avc->execsOrWriters <= 0) {
299 afs_warn("WARNING: afs_ufswr vcp=%lx, exOrW=%d\n", (unsigned long)avc,
300 avc->execsOrWriters);
306 while (totalLength > 0) {
308 * Note that we must set CDirty for every iteration of this loop.
309 * CDirty may get cleared below (such as during afs_DoPartialStore),
310 * but we're still writing to the file, so make sure CDirty is set
313 avc->f.states |= CDirty;
315 tdc = afs_ObtainDCacheForWriting(avc, filePos, totalLength, treq,
321 len = totalLength; /* write this amount by default */
322 offset = filePos - AFS_CHUNKTOBASE(tdc->f.chunk);
323 max = AFS_CHUNKTOSIZE(tdc->f.chunk); /* max size of this chunk */
324 if (max <= len + offset) { /*if we'd go past the end of this chunk */
325 /* it won't all fit in this chunk, so write as much
333 tuiop = afsio_partialcopy(auio, trimlen);
334 AFS_UIO_SETOFFSET(tuiop, offset);
336 code = (*(afs_cacheType->vwriteUIO))(avc, &tdc->f.inode, tuiop);
342 ZapDCE(tdc); /* bad data */
343 cfile = afs_CFileOpen(&tdc->f.inode);
345 afs_CFileTruncate(cfile, 0);
346 afs_CFileClose(cfile);
347 afs_AdjustSize(tdc, 0); /* sets f.chunkSize to 0 */
349 afs_stats_cmperf.cacheCurrDirtyChunks--;
350 afs_indexFlags[tdc->index] &= ~IFDataMod; /* so it does disappear */
351 ReleaseWriteLock(&tdc->lock);
355 /* otherwise we've written some, fixup length, etc and continue with next seg */
356 len = len - AFS_UIO_RESID(tuiop); /* compute amount really transferred */
358 afsio_skip(auio, tlen); /* advance auio over data written */
359 /* compute new file size */
360 if (offset + len > tdc->f.chunkBytes) {
361 afs_int32 tlength = offset + len;
362 afs_AdjustSize(tdc, tlength);
363 if (tdc->validPos < filePos + len)
364 tdc->validPos = filePos + len;
367 transferLength += len;
369 #if defined(AFS_SGI_ENV)
370 /* afs_xwrite handles setting m.Length */
371 osi_Assert(filePos <= avc->f.m.Length);
373 if (filePos > avc->f.m.Length) {
374 if (AFS_IS_DISCON_RW)
375 afs_PopulateDCache(avc, filePos, treq);
376 afs_Trace4(afs_iclSetp, CM_TRACE_SETLENGTH, ICL_TYPE_STRING,
377 __FILE__, ICL_TYPE_LONG, __LINE__, ICL_TYPE_OFFSET,
378 ICL_HANDLE_OFFSET(avc->f.m.Length), ICL_TYPE_OFFSET,
379 ICL_HANDLE_OFFSET(filePos));
380 avc->f.m.Length = filePos;
381 #if defined(AFS_FBSD_ENV) || defined(AFS_DFBSD_ENV)
382 vnode_pager_setsize(vp, filePos);
386 ReleaseWriteLock(&tdc->lock);
388 #if !defined(AFS_VM_RDWR_ENV)
390 * If write is implemented via VM, afs_DoPartialWrite() is called from
391 * the high-level write op.
394 code = afs_DoPartialWrite(avc, treq);
402 #if !defined(AFS_VM_RDWR_ENV) || defined(AFS_FAKEOPEN_ENV)
403 afs_FakeClose(avc, acred);
405 error = afs_CheckCode(error, treq, 7);
406 /* This set is here so we get the CheckCode. */
407 if (error && !avc->vc_error)
408 avc->vc_error = error;
410 ReleaseWriteLock(&avc->lock);
414 #ifndef AFS_VM_RDWR_ENV
416 * If write is implemented via VM, afs_fsync() is called from the high-level
419 #if defined(AFS_DARWIN_ENV) || defined(AFS_XBSD_ENV)
420 if (noLock && (aio & IO_SYNC)) {
423 /* On hpux on synchronous writes syncio will be set to IO_SYNC. If
424 * we're doing them because the file was opened with O_SYNCIO specified,
425 * we have to look in the u area. No single mechanism here!!
427 if (noLock && ((aio & IO_SYNC) | (auio->uio_fpflags & FSYNCIO))) {
429 if (noLock && (aio & FSYNC)) {
432 if (!AFS_NFSXLATORREQ(acred))
433 afs_fsync(avc, acred);
436 afs_DestroyReq(treq);
440 /* do partial write if we're low on unmodified chunks */
442 afs_DoPartialWrite(struct vcache *avc, struct vrequest *areq)
446 if (afs_stats_cmperf.cacheCurrDirtyChunks <=
447 afs_stats_cmperf.cacheMaxDirtyChunks
448 || AFS_IS_DISCONNECTED)
449 return 0; /* nothing to do */
450 /* otherwise, call afs_StoreDCache (later try to do this async, if possible) */
451 afs_Trace2(afs_iclSetp, CM_TRACE_PARTIALWRITE, ICL_TYPE_POINTER, avc,
452 ICL_TYPE_OFFSET, ICL_HANDLE_OFFSET(avc->f.m.Length));
454 #if defined(AFS_SUN5_ENV)
455 code = afs_StoreAllSegments(avc, areq, AFS_ASYNC | AFS_VMSYNC_INVAL);
457 code = afs_StoreAllSegments(avc, areq, AFS_ASYNC);
462 /* handle any closing cleanup stuff */
464 #if defined(AFS_SGI65_ENV)
465 afs_close(OSI_VC_DECL(avc), afs_int32 aflags, lastclose_t lastclose,
467 #elif defined(AFS_SGI64_ENV)
468 afs_close(OSI_VC_DECL(avc), afs_int32 aflags, lastclose_t lastclose,
469 off_t offset, afs_ucred_t *acred, struct flid *flp)
470 #elif defined(AFS_SGI_ENV)
471 afs_close(OSI_VC_DECL(avc), afs_int32 aflags, lastclose_t lastclose
472 off_t offset, afs_ucred_t *acred)
473 #elif defined(AFS_SUN5_ENV)
474 afs_close(OSI_VC_DECL(avc), afs_int32 aflags, int count, offset_t offset,
477 afs_close(OSI_VC_DECL(avc), afs_int32 aflags, afs_ucred_t *acred)
481 afs_int32 code_checkcode = 0;
483 struct vrequest *treq = NULL;
487 struct afs_fakestat_state fakestat;
490 AFS_STATCNT(afs_close);
491 afs_Trace2(afs_iclSetp, CM_TRACE_CLOSE, ICL_TYPE_POINTER, avc,
492 ICL_TYPE_INT32, aflags);
493 code = afs_CreateReq(&treq, acred);
496 afs_InitFakeStat(&fakestat);
497 code = afs_EvalFakeStat(&avc, &fakestat, treq);
499 afs_PutFakeStat(&fakestat);
500 afs_DestroyReq(treq);
505 if (avc->flockCount) {
506 HandleFlock(avc, LOCK_UN, treq, 0, 1 /*onlymine */ );
509 #if defined(AFS_SGI_ENV)
511 afs_PutFakeStat(&fakestat);
513 afs_DestroyReq(treq);
516 /* unlock any locks for pid - could be wrong for child .. */
517 AFS_RWLOCK((vnode_t *) avc, VRWLOCK_WRITE);
518 # ifdef AFS_SGI65_ENV
519 get_current_flid(&flid);
520 cleanlocks((vnode_t *) avc, flid.fl_pid, flid.fl_sysid);
521 HandleFlock(avc, LOCK_UN, treq, flid.fl_pid, 1 /*onlymine */ );
523 # ifdef AFS_SGI64_ENV
524 cleanlocks((vnode_t *) avc, flp);
525 # else /* AFS_SGI64_ENV */
526 cleanlocks((vnode_t *) avc, u.u_procp->p_epid, u.u_procp->p_sysid);
527 # endif /* AFS_SGI64_ENV */
528 HandleFlock(avc, LOCK_UN, treq, OSI_GET_CURRENT_PID(), 1 /*onlymine */ );
529 # endif /* AFS_SGI65_ENV */
530 /* afs_chkpgoob will drop and re-acquire the global lock. */
531 afs_chkpgoob(&avc->v, btoc(avc->f.m.Length));
532 #elif defined(AFS_SUN5_ENV)
534 /* The vfs layer may call this repeatedly with higher "count"; only
535 * on the last close (i.e. count = 1) we should actually proceed
537 afs_PutFakeStat(&fakestat);
539 afs_DestroyReq(treq);
543 if (avc->flockCount) { /* Release Lock */
544 HandleFlock(avc, LOCK_UN, treq, 0, 1 /*onlymine */ );
547 if (aflags & (FWRITE | FTRUNC)) {
548 if (afs_BBusy() || (AFS_NFSXLATORREQ(acred)) || AFS_IS_DISCONNECTED) {
549 /* do it yourself if daemons are all busy */
550 ObtainWriteLock(&avc->lock, 124);
551 code = afs_StoreOnLastReference(avc, treq);
552 ReleaseWriteLock(&avc->lock);
553 #if defined(AFS_SGI_ENV)
554 AFS_RWUNLOCK((vnode_t *) avc, VRWLOCK_WRITE);
557 #if defined(AFS_SGI_ENV)
558 AFS_RWUNLOCK((vnode_t *) avc, VRWLOCK_WRITE);
560 /* at least one daemon is idle, so ask it to do the store.
561 * Also, note that we don't lock it any more... */
562 tb = afs_BQueue(BOP_STORE, avc, 0, 1, acred,
563 (afs_size_t) afs_cr_uid(acred), (afs_size_t) 0,
564 (void *)0, (void *)0, (void *)0);
565 /* sleep waiting for the store to start, then retrieve error code */
566 while ((tb->flags & BUVALID) == 0) {
571 code_checkcode = tb->code_checkcode;
575 /* VNOVNODE is "acceptable" error code from close, since
576 * may happen when deleting a file on another machine while
577 * it is open here. */
578 if (code == VNOVNODE)
581 /* Ensure last closer gets the error. If another thread caused
582 * DoPartialWrite and this thread does not actually store the data,
583 * it may not see the quota error.
585 ObtainWriteLock(&avc->lock, 406);
588 osi_ReleaseVM(avc, acred);
590 /* We don't know what the original raw error code was, so set
591 * 'code' to 0. But we have the afs_CheckCode-translated error
592 * code, so put that in code_checkcode. We cannot just set code
593 * to avc->vc_error, since vc_error is a checkcode-translated
594 * error code, and 'code' is supposed to be a raw error code. */
596 code_checkcode = avc->vc_error;
599 ReleaseWriteLock(&avc->lock);
601 /* some codes merit specific complaint */
603 afs_warnuser("afs: failed to store file (network problems)\n");
606 else if (code == ENOSPC || code_checkcode == ENOSPC) {
608 ("afs: failed to store file (over quota or partition full)\n");
611 else if (code == ENOSPC || code_checkcode == ENOSPC) {
612 afs_warnuser("afs: failed to store file (partition full)\n");
613 } else if (code == EDQUOT || code_checkcode == EDQUOT) {
614 afs_warnuser("afs: failed to store file (over quota)\n");
617 else if (code || code_checkcode)
618 afs_warnuser("afs: failed to store file (%d/%d)\n", code, code_checkcode);
620 /* finally, we flush any text pages lying around here */
624 #if defined(AFS_SGI_ENV)
625 AFS_RWUNLOCK((vnode_t *) avc, VRWLOCK_WRITE);
626 osi_Assert(avc->opens > 0);
628 /* file open for read */
629 ObtainWriteLock(&avc->lock, 411);
632 osi_ReleaseVM(avc, acred);
635 code_checkcode = avc->vc_error;
638 #if defined(AFS_FBSD80_ENV)
641 afs_int32 opens, is_free, is_gone, is_doomed, iflag;
642 struct vnode *vp = AFSTOV(avc);
644 is_doomed = vp->v_iflag & VI_DOOMED;
645 is_free = vp->v_iflag & VI_FREE;
646 is_gone = vp->v_iflag & VI_DOINGINACT;
650 afs_warn("afs_close avc %p vp %p opens %d free %d doinginact %d doomed %d iflag %d\n",
651 avc, vp, opens, is_free, is_gone, is_doomed, iflag);
655 ReleaseWriteLock(&avc->lock);
658 afs_PutFakeStat(&fakestat);
660 if (code_checkcode) {
661 code = code_checkcode;
663 code = afs_CheckCode(code, treq, 5);
665 afs_DestroyReq(treq);
671 #if defined(AFS_SGI_ENV) || defined(AFS_SUN5_ENV)
672 afs_fsync(OSI_VC_DECL(avc), int flag, afs_ucred_t *acred
673 # ifdef AFS_SGI65_ENV
674 , off_t start, off_t stop
675 # endif /* AFS_SGI65_ENV */
677 #else /* !SUN5 && !SGI */
678 afs_fsync(OSI_VC_DECL(avc), afs_ucred_t *acred)
682 struct vrequest *treq = NULL;
686 return avc->vc_error;
688 #if defined(AFS_SUN5_ENV)
689 /* back out if called from NFS server */
690 if (curthread->t_flag & T_DONTPEND)
694 AFS_STATCNT(afs_fsync);
695 afs_Trace1(afs_iclSetp, CM_TRACE_FSYNC, ICL_TYPE_POINTER, avc);
696 if ((code = afs_CreateReq(&treq, acred)))
699 #if defined(AFS_SGI_ENV)
700 AFS_RWLOCK((vnode_t *) avc, VRWLOCK_WRITE);
701 if (flag & FSYNC_INVAL)
702 osi_VM_FSyncInval(avc);
703 #endif /* AFS_SGI_ENV */
705 ObtainSharedLock(&avc->lock, 18);
707 if (avc->execsOrWriters > 0) {
708 if (!AFS_IS_DISCONNECTED && !AFS_IS_DISCON_RW) {
709 /* Your average flush. */
711 /* put the file back */
712 UpgradeSToWLock(&avc->lock, 41);
713 code = afs_StoreAllSegments(avc, treq, AFS_SYNC);
714 ConvertWToSLock(&avc->lock);
716 UpgradeSToWLock(&avc->lock, 711);
717 afs_DisconAddDirty(avc, VDisconWriteFlush, 1);
718 ConvertWToSLock(&avc->lock);
719 } /* if not disconnected */
720 } /* if (avc->execsOrWriters > 0) */
722 #if defined(AFS_SGI_ENV)
723 AFS_RWUNLOCK((vnode_t *) avc, VRWLOCK_WRITE);
724 if (code == VNOVNODE) {
725 /* syncing an unlinked file! - non-informative to pass an errno
726 * 102 (== VNOVNODE) to user
732 code = afs_CheckCode(code, treq, 33);
733 afs_DestroyReq(treq);
734 ReleaseSharedLock(&avc->lock);