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 <afs/param.h>
24 /*extern void afsi_log(char *pattern, ...);*/
26 extern osi_hyper_t hzero;
29 osi_queue_t *cm_allFileLocks;
30 osi_queue_t *cm_freeFileLocks;
31 unsigned long cm_lockRefreshCycle;
33 /* lock for globals */
34 osi_rwlock_t cm_scacheLock;
36 /* Dummy scache entry for use with pioctl fids */
37 cm_scache_t cm_fakeSCache;
39 osi_queue_t * cm_allFreeWaiters; /* protected by cm_scacheLock */
41 #ifdef AFS_FREELANCE_CLIENT
42 extern osi_mutex_t cm_Freelance_Lock;
45 /* must be called with cm_scacheLock write-locked! */
46 void cm_AdjustScacheLRU(cm_scache_t *scp)
48 if (scp == cm_data.scacheLRULastp)
49 cm_data.scacheLRULastp = (cm_scache_t *) osi_QPrev(&scp->q);
50 osi_QRemoveHT((osi_queue_t **) &cm_data.scacheLRUFirstp, (osi_queue_t **) &cm_data.scacheLRULastp, &scp->q);
51 osi_QAdd((osi_queue_t **) &cm_data.scacheLRUFirstp, &scp->q);
52 if (!cm_data.scacheLRULastp)
53 cm_data.scacheLRULastp = scp;
56 /* call with scache write-locked and mutex held */
57 void cm_RemoveSCacheFromHashTable(cm_scache_t *scp)
63 if (scp->flags & CM_SCACHEFLAG_INHASH) {
64 /* hash it out first */
65 i = CM_SCACHE_HASH(&scp->fid);
66 for (lscpp = &cm_data.scacheHashTablep[i], tscp = cm_data.scacheHashTablep[i];
68 lscpp = &tscp->nextp, tscp = tscp->nextp) {
71 scp->flags &= ~CM_SCACHEFLAG_INHASH;
78 /* called with cm_scacheLock write-locked; recycles an existing scp.
80 * this function ignores all of the locking hierarchy.
82 long cm_RecycleSCache(cm_scache_t *scp, afs_int32 flags)
84 if (scp->refCount != 0) {
88 if (scp->flags & CM_SCACHEFLAG_SMB_FID) {
89 osi_Log1(afsd_logp,"cm_RecycleSCache CM_SCACHEFLAG_SMB_FID detected scp 0x%p", scp);
91 osi_panic("cm_RecycleSCache CM_SCACHEFLAG_SMB_FID detected",__FILE__,__LINE__);
96 cm_RemoveSCacheFromHashTable(scp);
99 if (flags & CM_SCACHE_RECYCLEFLAG_DESTROY_BUFFERS) {
100 osi_queueData_t *qdp;
103 while(qdp = scp->bufWritesp) {
104 bufp = osi_GetQData(qdp);
105 osi_QRemove((osi_queue_t **) &scp->bufWritesp, &qdp->q);
108 lock_ObtainMutex(&bufp->mx);
109 bufp->cmFlags &= ~CM_BUF_CMSTORING;
110 bufp->flags &= ~CM_BUF_DIRTY;
111 bufp->dirty_offset = 0;
112 bufp->dirty_length = 0;
113 bufp->flags |= CM_BUF_ERROR;
114 bufp->error = VNOVNODE;
115 bufp->dataVersion = -1; /* bad */
116 bufp->dirtyCounter++;
117 if (bufp->flags & CM_BUF_WAITING) {
118 osi_Log2(afsd_logp, "CM RecycleSCache Waking [scp 0x%x] bufp 0x%x", scp, bufp);
119 osi_Wakeup((long) &bufp);
121 lock_ReleaseMutex(&bufp->mx);
125 while(qdp = scp->bufReadsp) {
126 bufp = osi_GetQData(qdp);
127 osi_QRemove((osi_queue_t **) &scp->bufReadsp, &qdp->q);
130 lock_ObtainMutex(&bufp->mx);
131 bufp->cmFlags &= ~CM_BUF_CMFETCHING;
132 bufp->flags &= ~CM_BUF_DIRTY;
133 bufp->dirty_offset = 0;
134 bufp->dirty_length = 0;
135 bufp->flags |= CM_BUF_ERROR;
136 bufp->error = VNOVNODE;
137 bufp->dataVersion = -1; /* bad */
138 bufp->dirtyCounter++;
139 if (bufp->flags & CM_BUF_WAITING) {
140 osi_Log2(afsd_logp, "CM RecycleSCache Waking [scp 0x%x] bufp 0x%x", scp, bufp);
141 osi_Wakeup((long) &bufp);
143 lock_ReleaseMutex(&bufp->mx);
147 buf_CleanDirtyBuffers(scp);
149 /* look for things that shouldn't still be set */
150 osi_assertx(scp->bufWritesp == NULL, "non-null cm_scache_t bufWritesp");
151 osi_assertx(scp->bufReadsp == NULL, "non-null cm_scache_t bufReadsp");
155 /* invalidate so next merge works fine;
156 * also initialize some flags */
158 scp->flags &= ~(CM_SCACHEFLAG_STATD
159 | CM_SCACHEFLAG_DELETED
161 | CM_SCACHEFLAG_PURERO
162 | CM_SCACHEFLAG_OVERQUOTA
163 | CM_SCACHEFLAG_OUTOFSPACE
164 | CM_SCACHEFLAG_EACCESS);
165 scp->serverModTime = 0;
166 scp->dataVersion = 0;
167 scp->bufDataVersionLow = 0;
168 scp->bulkStatProgress = hzero;
170 scp->waitQueueT = NULL;
172 if (scp->cbServerp) {
173 cm_PutServer(scp->cbServerp);
174 scp->cbServerp = NULL;
184 /* remove from dnlc */
188 /* discard cached status; if non-zero, Close
189 * tried to store this to server but failed */
192 /* drop held volume ref */
194 cm_PutVolume(scp->volp);
198 /* discard symlink info */
199 scp->mountPointStringp[0] = '\0';
200 memset(&scp->mountRootFid, 0, sizeof(cm_fid_t));
201 memset(&scp->dotdotFid, 0, sizeof(cm_fid_t));
203 /* reset locking info */
204 scp->fileLocksH = NULL;
205 scp->fileLocksT = NULL;
206 scp->serverLock = (-1);
207 scp->exclusiveLocks = 0;
208 scp->sharedLocks = 0;
209 scp->lockDataVersion = -1;
211 /* not locked, but there can be no references to this guy
212 * while we hold the global refcount lock.
214 cm_FreeAllACLEnts(scp);
217 /* destroy directory Bplus Tree */
219 LARGE_INTEGER start, end;
220 QueryPerformanceCounter(&start);
222 freeBtree(scp->dirBplus);
223 scp->dirBplus = NULL;
224 QueryPerformanceCounter(&end);
226 bplus_free_time += (end.QuadPart - start.QuadPart);
233 /* called with cm_scacheLock write-locked; find a vnode to recycle.
234 * Can allocate a new one if desperate, or if below quota (cm_data.maxSCaches).
236 cm_scache_t *cm_GetNewSCache(void)
242 /* first pass - look for deleted objects */
243 for ( scp = cm_data.scacheLRULastp;
245 scp = (cm_scache_t *) osi_QPrev(&scp->q))
247 osi_assertx(scp >= cm_data.scacheBaseAddress && scp < (cm_scache_t *)cm_data.scacheHashTablep,
248 "invalid cm_scache_t address");
250 if (scp->refCount == 0) {
251 if (scp->flags & CM_SCACHEFLAG_DELETED) {
252 osi_Log1(afsd_logp, "GetNewSCache attempting to recycle deleted scp 0x%x", scp);
253 if (!cm_RecycleSCache(scp, CM_SCACHE_RECYCLEFLAG_DESTROY_BUFFERS)) {
255 /* we found an entry, so return it */
256 /* now remove from the LRU queue and put it back at the
257 * head of the LRU queue.
259 cm_AdjustScacheLRU(scp);
264 osi_Log1(afsd_logp, "GetNewSCache recycled failed scp 0x%x", scp);
265 } else if (!(scp->flags & CM_SCACHEFLAG_INHASH)) {
266 /* we found an entry, so return it */
267 /* now remove from the LRU queue and put it back at the
268 * head of the LRU queue.
270 cm_AdjustScacheLRU(scp);
277 osi_Log0(afsd_logp, "GetNewSCache no deleted or recycled entries available for reuse");
280 if (cm_data.currentSCaches >= cm_data.maxSCaches) {
281 /* There were no deleted scache objects that we could use. Try to find
282 * one that simply hasn't been used in a while.
284 for ( scp = cm_data.scacheLRULastp;
286 scp = (cm_scache_t *) osi_QPrev(&scp->q))
288 /* It is possible for the refCount to be zero and for there still
289 * to be outstanding dirty buffers. If there are dirty buffers,
290 * we must not recycle the scp. */
291 if (scp->refCount == 0 && scp->bufReadsp == NULL && scp->bufWritesp == NULL) {
292 if (!buf_DirtyBuffersExist(&scp->fid)) {
293 if (!cm_RecycleSCache(scp, 0)) {
294 /* we found an entry, so return it */
295 /* now remove from the LRU queue and put it back at the
296 * head of the LRU queue.
298 cm_AdjustScacheLRU(scp);
304 osi_Log1(afsd_logp,"GetNewSCache dirty buffers exist scp 0x%x", scp);
308 osi_Log1(afsd_logp, "GetNewSCache all scache entries in use (retry = %d)", retry);
313 /* if we get here, we should allocate a new scache entry. We either are below
314 * quota or we have a leak and need to allocate a new one to avoid panicing.
316 scp = cm_data.scacheBaseAddress + cm_data.currentSCaches;
317 osi_assertx(scp >= cm_data.scacheBaseAddress && scp < (cm_scache_t *)cm_data.scacheHashTablep,
318 "invalid cm_scache_t address");
319 memset(scp, 0, sizeof(cm_scache_t));
320 scp->magic = CM_SCACHE_MAGIC;
321 lock_InitializeRWLock(&scp->rw, "cm_scache_t rw");
322 lock_InitializeRWLock(&scp->bufCreateLock, "cm_scache_t bufCreateLock");
324 lock_InitializeRWLock(&scp->dirlock, "cm_scache_t dirlock");
326 scp->serverLock = -1;
328 /* and put it in the LRU queue */
329 osi_QAdd((osi_queue_t **) &cm_data.scacheLRUFirstp, &scp->q);
330 if (!cm_data.scacheLRULastp)
331 cm_data.scacheLRULastp = scp;
332 cm_data.currentSCaches++;
333 cm_dnlcPurgedp(scp); /* make doubly sure that this is not in dnlc */
335 scp->allNextp = cm_data.allSCachesp;
336 cm_data.allSCachesp = scp;
340 void cm_SetFid(cm_fid_t *fidp, afs_uint32 cell, afs_uint32 volume, afs_uint32 vnode, afs_uint32 unique)
343 fidp->volume = volume;
345 fidp->unique = unique;
346 fidp->hash = ((cell & 0xF) << 28) | ((volume & 0x3F) << 22) | ((vnode & 0x7FF) << 11) | (unique & 0x7FF);
349 /* like strcmp, only for fids */
350 __inline int cm_FidCmp(cm_fid_t *ap, cm_fid_t *bp)
352 if (ap->hash != bp->hash)
354 if (ap->vnode != bp->vnode)
356 if (ap->volume != bp->volume)
358 if (ap->unique != bp->unique)
360 if (ap->cell != bp->cell)
365 void cm_fakeSCacheInit(int newFile)
368 memset(&cm_data.fakeSCache, 0, sizeof(cm_scache_t));
369 cm_data.fakeSCache.cbServerp = (struct cm_server *)(-1);
370 /* can leave clientModTime at 0 */
371 cm_data.fakeSCache.fileType = CM_SCACHETYPE_FILE;
372 cm_data.fakeSCache.unixModeBits = 0777;
373 cm_data.fakeSCache.length.LowPart = 1000;
374 cm_data.fakeSCache.linkCount = 1;
375 cm_data.fakeSCache.refCount = 1;
377 lock_InitializeRWLock(&cm_data.fakeSCache.rw, "cm_scache_t rw");
381 cm_ValidateSCache(void)
383 cm_scache_t * scp, *lscp;
386 if ( cm_data.scacheLRUFirstp == NULL && cm_data.scacheLRULastp != NULL ||
387 cm_data.scacheLRUFirstp != NULL && cm_data.scacheLRULastp == NULL) {
388 afsi_log("cm_ValidateSCache failure: inconsistent LRU pointers");
389 fprintf(stderr, "cm_ValidateSCache failure: inconsistent LRU pointers\n");
393 for ( scp = cm_data.scacheLRUFirstp, lscp = NULL, i = 0;
395 lscp = scp, scp = (cm_scache_t *) osi_QNext(&scp->q), i++ ) {
396 if (scp->magic != CM_SCACHE_MAGIC) {
397 afsi_log("cm_ValidateSCache failure: scp->magic != CM_SCACHE_MAGIC");
398 fprintf(stderr, "cm_ValidateSCache failure: scp->magic != CM_SCACHE_MAGIC\n");
401 if (scp->nextp && scp->nextp->magic != CM_SCACHE_MAGIC) {
402 afsi_log("cm_ValidateSCache failure: scp->nextp->magic != CM_SCACHE_MAGIC");
403 fprintf(stderr, "cm_ValidateSCache failure: scp->nextp->magic != CM_SCACHE_MAGIC\n");
406 if (scp->randomACLp && scp->randomACLp->magic != CM_ACLENT_MAGIC) {
407 afsi_log("cm_ValidateSCache failure: scp->randomACLp->magic != CM_ACLENT_MAGIC");
408 fprintf(stderr, "cm_ValidateSCache failure: scp->randomACLp->magic != CM_ACLENT_MAGIC\n");
411 if (scp->volp && scp->volp->magic != CM_VOLUME_MAGIC) {
412 afsi_log("cm_ValidateSCache failure: scp->volp->magic != CM_VOLUME_MAGIC");
413 fprintf(stderr, "cm_ValidateSCache failure: scp->volp->magic != CM_VOLUME_MAGIC\n");
416 if (i > cm_data.currentSCaches ) {
417 afsi_log("cm_ValidateSCache failure: LRU First queue loops");
418 fprintf(stderr, "cm_ValidateSCache failure: LUR First queue loops\n");
421 if (lscp != (cm_scache_t *) osi_QPrev(&scp->q)) {
422 afsi_log("cm_ValidateSCache failure: QPrev(scp) != previous");
423 fprintf(stderr, "cm_ValidateSCache failure: QPrev(scp) != previous\n");
428 for ( scp = cm_data.scacheLRULastp, lscp = NULL, i = 0; scp;
429 lscp = scp, scp = (cm_scache_t *) osi_QPrev(&scp->q), i++ ) {
430 if (scp->magic != CM_SCACHE_MAGIC) {
431 afsi_log("cm_ValidateSCache failure: scp->magic != CM_SCACHE_MAGIC");
432 fprintf(stderr, "cm_ValidateSCache failure: scp->magic != CM_SCACHE_MAGIC\n");
435 if (scp->nextp && scp->nextp->magic != CM_SCACHE_MAGIC) {
436 afsi_log("cm_ValidateSCache failure: scp->nextp->magic != CM_SCACHE_MAGIC");
437 fprintf(stderr, "cm_ValidateSCache failure: scp->nextp->magic != CM_SCACHE_MAGIC\n");
440 if (scp->randomACLp && scp->randomACLp->magic != CM_ACLENT_MAGIC) {
441 afsi_log("cm_ValidateSCache failure: scp->randomACLp->magic != CM_ACLENT_MAGIC");
442 fprintf(stderr, "cm_ValidateSCache failure: scp->randomACLp->magic != CM_ACLENT_MAGIC\n");
445 if (scp->volp && scp->volp->magic != CM_VOLUME_MAGIC) {
446 afsi_log("cm_ValidateSCache failure: scp->volp->magic != CM_VOLUME_MAGIC");
447 fprintf(stderr, "cm_ValidateSCache failure: scp->volp->magic != CM_VOLUME_MAGIC\n");
450 if (i > cm_data.currentSCaches ) {
451 afsi_log("cm_ValidateSCache failure: LRU Last queue loops");
452 fprintf(stderr, "cm_ValidateSCache failure: LUR Last queue loops\n");
455 if (lscp != (cm_scache_t *) osi_QNext(&scp->q)) {
456 afsi_log("cm_ValidateSCache failure: QNext(scp) != next");
457 fprintf(stderr, "cm_ValidateSCache failure: QNext(scp) != next\n");
462 for ( i=0; i < cm_data.scacheHashTableSize; i++ ) {
463 for ( scp = cm_data.scacheHashTablep[i]; scp; scp = scp->nextp ) {
465 hash = CM_SCACHE_HASH(&scp->fid);
466 if (scp->magic != CM_SCACHE_MAGIC) {
467 afsi_log("cm_ValidateSCache failure: scp->magic != CM_SCACHE_MAGIC");
468 fprintf(stderr, "cm_ValidateSCache failure: scp->magic != CM_SCACHE_MAGIC\n");
471 if (scp->nextp && scp->nextp->magic != CM_SCACHE_MAGIC) {
472 afsi_log("cm_ValidateSCache failure: scp->nextp->magic != CM_SCACHE_MAGIC");
473 fprintf(stderr, "cm_ValidateSCache failure: scp->nextp->magic != CM_SCACHE_MAGIC\n");
476 if (scp->randomACLp && scp->randomACLp->magic != CM_ACLENT_MAGIC) {
477 afsi_log("cm_ValidateSCache failure: scp->randomACLp->magic != CM_ACLENT_MAGIC");
478 fprintf(stderr, "cm_ValidateSCache failure: scp->randomACLp->magic != CM_ACLENT_MAGIC\n");
481 if (scp->volp && scp->volp->magic != CM_VOLUME_MAGIC) {
482 afsi_log("cm_ValidateSCache failure: scp->volp->magic != CM_VOLUME_MAGIC");
483 fprintf(stderr, "cm_ValidateSCache failure: scp->volp->magic != CM_VOLUME_MAGIC\n");
487 afsi_log("cm_ValidateSCache failure: scp hash != hash index");
488 fprintf(stderr, "cm_ValidateSCache failure: scp hash != hash index\n");
494 return cm_dnlcValidate();
498 cm_SuspendSCache(void)
503 cm_GiveUpAllCallbacksAllServers(TRUE);
506 * After this call all servers are marked down.
507 * Do not clear the callbacks, instead change the
508 * expiration time so that the callbacks will be expired
509 * when the servers are marked back up. However, we
510 * want the callbacks to be preserved as long as the
511 * servers are down. That way if the machine resumes
512 * without network, the stat cache item will still be
517 lock_ObtainWrite(&cm_scacheLock);
518 for ( scp = cm_data.allSCachesp; scp; scp = scp->allNextp ) {
519 if (scp->cbServerp) {
520 if (scp->flags & CM_SCACHEFLAG_PURERO && scp->volp) {
521 if (scp->volp->cbExpiresRO == scp->cbExpires) {
522 scp->volp->cbExpiresRO = now+1;
525 scp->cbExpires = now+1;
528 lock_ReleaseWrite(&cm_scacheLock);
532 cm_ShutdownSCache(void)
536 lock_ObtainWrite(&cm_scacheLock);
538 for ( scp = cm_data.allSCachesp; scp;
539 scp = scp->allNextp ) {
540 if (scp->randomACLp) {
541 lock_ObtainWrite(&scp->rw);
542 cm_FreeAllACLEnts(scp);
543 lock_ReleaseWrite(&scp->rw);
546 if (scp->cbServerp) {
547 cm_PutServer(scp->cbServerp);
548 scp->cbServerp = NULL;
551 scp->flags &= ~CM_SCACHEFLAG_CALLBACK;
555 freeBtree(scp->dirBplus);
556 scp->dirBplus = NULL;
557 scp->dirDataVersion = -1;
558 lock_FinalizeRWLock(&scp->dirlock);
560 lock_FinalizeRWLock(&scp->rw);
561 lock_FinalizeRWLock(&scp->bufCreateLock);
563 lock_ReleaseWrite(&cm_scacheLock);
565 cm_GiveUpAllCallbacksAllServers(FALSE);
567 return cm_dnlcShutdown();
570 void cm_InitSCache(int newFile, long maxSCaches)
572 static osi_once_t once;
574 if (osi_Once(&once)) {
575 lock_InitializeRWLock(&cm_scacheLock, "cm_scacheLock");
577 memset(cm_data.scacheHashTablep, 0, sizeof(cm_scache_t *) * cm_data.scacheHashTableSize);
578 cm_data.allSCachesp = NULL;
579 cm_data.currentSCaches = 0;
580 cm_data.maxSCaches = maxSCaches;
581 cm_data.scacheLRUFirstp = cm_data.scacheLRULastp = NULL;
585 for ( scp = cm_data.allSCachesp; scp;
586 scp = scp->allNextp ) {
587 lock_InitializeRWLock(&scp->rw, "cm_scache_t rw");
588 lock_InitializeRWLock(&scp->bufCreateLock, "cm_scache_t bufCreateLock");
590 lock_InitializeRWLock(&scp->dirlock, "cm_scache_t dirlock");
592 scp->cbServerp = NULL;
594 scp->fileLocksH = NULL;
595 scp->fileLocksT = NULL;
596 scp->serverLock = (-1);
597 scp->lastRefreshCycle = 0;
598 scp->exclusiveLocks = 0;
599 scp->sharedLocks = 0;
606 scp->dirBplus = NULL;
607 scp->dirDataVersion = -1;
609 scp->waitQueueT = NULL;
610 scp->flags &= ~CM_SCACHEFLAG_WAITING;
613 cm_allFileLocks = NULL;
614 cm_freeFileLocks = NULL;
615 cm_lockRefreshCycle = 0;
616 cm_fakeSCacheInit(newFile);
617 cm_allFreeWaiters = NULL;
618 cm_dnlcInit(newFile);
623 /* version that doesn't bother creating the entry if we don't find it */
624 cm_scache_t *cm_FindSCache(cm_fid_t *fidp)
629 hash = CM_SCACHE_HASH(fidp);
631 if (fidp->cell == 0) {
635 lock_ObtainWrite(&cm_scacheLock);
636 for (scp=cm_data.scacheHashTablep[hash]; scp; scp=scp->nextp) {
637 if (cm_FidCmp(fidp, &scp->fid) == 0) {
638 cm_HoldSCacheNoLock(scp);
639 cm_AdjustScacheLRU(scp);
640 lock_ReleaseWrite(&cm_scacheLock);
644 lock_ReleaseWrite(&cm_scacheLock);
648 #ifdef DEBUG_REFCOUNT
649 long cm_GetSCacheDbg(cm_fid_t *fidp, cm_scache_t **outScpp, cm_user_t *userp,
650 cm_req_t *reqp, char * file, long line)
652 long cm_GetSCache(cm_fid_t *fidp, cm_scache_t **outScpp, cm_user_t *userp,
659 cm_volume_t *volp = NULL;
661 int special = 0; // yj: boolean variable to test if file is on root.afs
663 extern cm_fid_t cm_rootFid;
665 hash = CM_SCACHE_HASH(fidp);
667 osi_assertx(fidp->cell != 0, "unassigned cell value");
669 if (fidp->cell== cm_data.rootFid.cell &&
670 fidp->volume==cm_data.rootFid.volume &&
671 fidp->vnode==0x0 && fidp->unique==0x0)
673 osi_Log0(afsd_logp,"cm_GetSCache called with root cell/volume and vnode=0 and unique=0");
676 // yj: check if we have the scp, if so, we don't need
677 // to do anything else
678 lock_ObtainWrite(&cm_scacheLock);
679 for (scp=cm_data.scacheHashTablep[hash]; scp; scp=scp->nextp) {
680 if (cm_FidCmp(fidp, &scp->fid) == 0) {
681 #ifdef DEBUG_REFCOUNT
682 afsi_log("%s:%d cm_GetSCache (1) outScpp 0x%p ref %d", file, line, scp, scp->refCount);
683 osi_Log1(afsd_logp,"cm_GetSCache (1) outScpp 0x%p", scp);
685 cm_HoldSCacheNoLock(scp);
687 cm_AdjustScacheLRU(scp);
688 lock_ReleaseWrite(&cm_scacheLock);
693 // yj: when we get here, it means we don't have an scp
694 // so we need to either load it or fake it, depending
695 // on whether the file is "special", see below.
697 // yj: if we're trying to get an scp for a file that's
698 // on root.afs of homecell, we want to handle it specially
699 // because we have to fill in the status stuff 'coz we
700 // don't want trybulkstat to fill it in for us
701 #ifdef AFS_FREELANCE_CLIENT
702 special = (fidp->cell==AFS_FAKE_ROOT_CELL_ID &&
703 fidp->volume==AFS_FAKE_ROOT_VOL_ID &&
704 !(fidp->vnode==0x1 && fidp->unique==0x1));
705 isRoot = (fidp->cell==AFS_FAKE_ROOT_CELL_ID &&
706 fidp->volume==AFS_FAKE_ROOT_VOL_ID &&
707 fidp->vnode==0x1 && fidp->unique==0x1);
708 if (cm_freelanceEnabled && isRoot) {
709 osi_Log0(afsd_logp,"cm_GetSCache Freelance and isRoot");
710 /* freelance: if we are trying to get the root scp for the first
711 * time, we will just put in a place holder entry.
716 if (cm_freelanceEnabled && special) {
717 char mp[MOUNTPOINTLEN] = "";
720 osi_Log0(afsd_logp,"cm_GetSCache Freelance and special");
721 lock_ObtainMutex(&cm_Freelance_Lock);
722 if (fidp->vnode >= 2 && fidp->vnode - 2 < cm_noLocalMountPoints) {
723 strncpy(mp,(cm_localMountPoints+fidp->vnode-2)->mountPointStringp, MOUNTPOINTLEN);
724 mp[MOUNTPOINTLEN-1] = '\0';
725 if ( !strnicmp(mp, "msdfs:", strlen("msdfs:")) )
726 fileType = CM_SCACHETYPE_DFSLINK;
728 fileType = (cm_localMountPoints+fidp->vnode-2)->fileType;
730 fileType = CM_SCACHETYPE_INVALID;
733 lock_ReleaseMutex(&cm_Freelance_Lock);
735 scp = cm_GetNewSCache();
737 osi_Log0(afsd_logp,"cm_GetSCache unable to obtain *new* scache entry");
738 lock_ReleaseWrite(&cm_scacheLock);
739 return CM_ERROR_WOULDBLOCK;
742 #if not_too_dangerous
743 /* dropping the cm_scacheLock allows more than one thread
744 * to obtain the same cm_scache_t from the LRU list. Since
745 * the refCount is known to be zero at this point we have to
746 * assume that no one else is using the one this is returned.
748 lock_ReleaseWrite(&cm_scacheLock);
749 lock_ObtainWrite(&scp->rw);
750 lock_ObtainWrite(&cm_scacheLock);
753 scp->volp = cm_data.rootSCachep->volp;
755 cm_GetVolume(scp->volp); /* grab an additional reference */
756 scp->dotdotFid.cell=AFS_FAKE_ROOT_CELL_ID;
757 scp->dotdotFid.volume=AFS_FAKE_ROOT_VOL_ID;
758 scp->dotdotFid.unique=1;
759 scp->dotdotFid.vnode=1;
760 scp->flags |= (CM_SCACHEFLAG_PURERO | CM_SCACHEFLAG_RO);
761 scp->nextp=cm_data.scacheHashTablep[hash];
762 cm_data.scacheHashTablep[hash]=scp;
763 scp->flags |= CM_SCACHEFLAG_INHASH;
765 osi_Log1(afsd_logp,"cm_GetSCache (freelance) sets refCount to 1 scp 0x%x", scp);
766 scp->fileType = fileType;
767 scp->length.LowPart = (DWORD)strlen(mp)+4;
768 scp->length.HighPart = 0;
769 strncpy(scp->mountPointStringp,mp,MOUNTPOINTLEN);
771 scp->unixModeBits=0777;
772 scp->clientModTime=FakeFreelanceModTime;
773 scp->serverModTime=FakeFreelanceModTime;
774 scp->parentUnique = 0x1;
775 scp->parentVnode=0x1;
777 scp->dataVersion=cm_data.fakeDirVersion;
778 scp->bufDataVersionLow=cm_data.fakeDirVersion;
779 scp->lockDataVersion=-1; /* no lock yet */
780 #if not_too_dangerous
781 lock_ReleaseWrite(&scp->rw);
784 lock_ReleaseWrite(&cm_scacheLock);
785 #ifdef DEBUG_REFCOUNT
786 afsi_log("%s:%d cm_GetSCache (2) outScpp 0x%p ref %d", file, line, scp, scp->refCount);
787 osi_Log1(afsd_logp,"cm_GetSCache (2) outScpp 0x%p", scp);
792 #endif /* AFS_FREELANCE_CLIENT */
794 /* otherwise, we need to find the volume */
795 if (!cm_freelanceEnabled || !isRoot) {
796 lock_ReleaseWrite(&cm_scacheLock); /* for perf. reasons */
797 cellp = cm_FindCellByID(fidp->cell, 0);
799 return CM_ERROR_NOSUCHCELL;
801 code = cm_GetVolumeByID(cellp, fidp->volume, userp, reqp, CM_GETVOL_FLAG_CREATE, &volp);
804 lock_ObtainWrite(&cm_scacheLock);
807 /* otherwise, we have the volume, now reverify that the scp doesn't
808 * exist, and proceed.
810 for (scp=cm_data.scacheHashTablep[hash]; scp; scp=scp->nextp) {
811 if (cm_FidCmp(fidp, &scp->fid) == 0) {
812 #ifdef DEBUG_REFCOUNT
813 afsi_log("%s:%d cm_GetSCache (3) outScpp 0x%p ref %d", file, line, scp, scp->refCount);
814 osi_Log1(afsd_logp,"cm_GetSCache (3) outScpp 0x%p", scp);
816 cm_HoldSCacheNoLock(scp);
817 osi_assertx(scp->volp == volp, "cm_scache_t volume has unexpected value");
818 cm_AdjustScacheLRU(scp);
819 lock_ReleaseWrite(&cm_scacheLock);
827 /* now, if we don't have the fid, recycle something */
828 scp = cm_GetNewSCache();
830 osi_Log0(afsd_logp,"cm_GetNewSCache unable to obtain *new* scache entry");
831 lock_ReleaseWrite(&cm_scacheLock);
834 return CM_ERROR_WOULDBLOCK;
836 osi_Log2(afsd_logp,"cm_GetNewSCache returns scp 0x%x flags 0x%x", scp, scp->flags);
838 osi_assertx(!(scp->flags & CM_SCACHEFLAG_INHASH), "CM_SCACHEFLAG_INHASH set");
840 #if not_too_dangerous
841 /* dropping the cm_scacheLock allows more than one thread
842 * to obtain the same cm_scache_t from the LRU list. Since
843 * the refCount is known to be zero at this point we have to
844 * assume that no one else is using the one this is returned.
846 lock_ReleaseWrite(&cm_scacheLock);
847 lock_ObtainWrite(&scp->rw);
848 lock_ObtainWrite(&cm_scacheLock);
851 scp->volp = volp; /* a held reference */
853 if (!cm_freelanceEnabled || !isRoot) {
854 /* if this scache entry represents a volume root then we need
855 * to copy the dotdotFipd from the volume structure where the
856 * "master" copy is stored (defect 11489)
858 if (scp->fid.vnode == 1 && scp->fid.unique == 1) {
859 scp->dotdotFid = volp->dotdotFid;
862 if (volp->ro.ID == fidp->volume)
863 scp->flags |= (CM_SCACHEFLAG_PURERO | CM_SCACHEFLAG_RO);
864 else if (volp->bk.ID == fidp->volume)
865 scp->flags |= CM_SCACHEFLAG_RO;
867 scp->nextp = cm_data.scacheHashTablep[hash];
868 cm_data.scacheHashTablep[hash] = scp;
869 scp->flags |= CM_SCACHEFLAG_INHASH;
871 osi_Log1(afsd_logp,"cm_GetSCache sets refCount to 1 scp 0x%x", scp);
872 #if not_too_dangerous
873 lock_ReleaseWrite(&scp->rw);
876 /* XXX - The following fields in the cm_scache are
882 lock_ReleaseWrite(&cm_scacheLock);
884 /* now we have a held scache entry; just return it */
886 #ifdef DEBUG_REFCOUNT
887 afsi_log("%s:%d cm_GetSCache (4) outScpp 0x%p ref %d", file, line, scp, scp->refCount);
888 osi_Log1(afsd_logp,"cm_GetSCache (4) outScpp 0x%p", scp);
893 /* Returns a held reference to the scache's parent
895 cm_scache_t * cm_FindSCacheParent(cm_scache_t * scp)
900 cm_scache_t * pscp = NULL;
902 lock_ObtainWrite(&cm_scacheLock);
903 cm_SetFid(&parent_fid, scp->fid.cell, scp->fid.volume, scp->parentVnode, scp->parentUnique);
905 if (cm_FidCmp(&scp->fid, &parent_fid)) {
906 i = CM_SCACHE_HASH(&parent_fid);
907 for (pscp = cm_data.scacheHashTablep[i]; pscp; pscp = pscp->nextp) {
908 if (!cm_FidCmp(&pscp->fid, &parent_fid)) {
909 cm_HoldSCacheNoLock(pscp);
915 lock_ReleaseWrite(&cm_scacheLock);
920 void cm_SyncOpAddToWaitQueue(cm_scache_t * scp, afs_int32 flags, cm_buf_t * bufp)
922 cm_scache_waiter_t * w;
924 /* Do not use the queue for asynchronous store operations */
925 if (flags == CM_SCACHESYNC_ASYNCSTORE)
928 lock_ObtainWrite(&cm_scacheLock);
929 if (cm_allFreeWaiters == NULL) {
930 w = malloc(sizeof(*w));
931 memset(w, 0, sizeof(*w));
933 w = (cm_scache_waiter_t *) cm_allFreeWaiters;
934 osi_QRemove(&cm_allFreeWaiters, (osi_queue_t *) w);
937 w->threadId = thrd_Current();
939 cm_HoldSCacheNoLock(scp);
943 osi_QAddT(&scp->waitQueueH, &scp->waitQueueT, (osi_queue_t *) w);
944 lock_ReleaseWrite(&cm_scacheLock);
946 osi_Log2(afsd_logp, "cm_SyncOpAddToWaitQueue : Adding thread to wait queue scp 0x%p w 0x%p", scp, w);
949 int cm_SyncOpCheckContinue(cm_scache_t * scp, afs_int32 flags, cm_buf_t * bufp)
951 cm_scache_waiter_t * w;
954 /* Do not use the queue for asynchronous store operations */
955 if (flags == CM_SCACHESYNC_ASYNCSTORE)
958 osi_Log0(afsd_logp, "cm_SyncOpCheckContinue checking for continuation");
960 lock_ObtainRead(&cm_scacheLock);
961 for (w = (cm_scache_waiter_t *)scp->waitQueueH;
963 w = (cm_scache_waiter_t *)osi_QNext((osi_queue_t *) w)) {
964 if (w->flags == flags && w->bufp == bufp) {
969 osi_assertx(w != NULL, "null cm_scache_waiter_t");
970 this_is_me = (w->threadId == thrd_Current());
971 lock_ReleaseRead(&cm_scacheLock);
974 osi_Log1(afsd_logp, "cm_SyncOpCheckContinue MISS: Waiter 0x%p", w);
978 osi_Log1(afsd_logp, "cm_SyncOpCheckContinue HIT: Waiter 0x%p", w);
980 lock_ObtainWrite(&cm_scacheLock);
981 osi_QRemoveHT(&scp->waitQueueH, &scp->waitQueueT, (osi_queue_t *) w);
982 cm_ReleaseSCacheNoLock(scp);
983 memset(w, 0, sizeof(*w));
984 osi_QAdd(&cm_allFreeWaiters, (osi_queue_t *) w);
985 lock_ReleaseWrite(&cm_scacheLock);
991 /* synchronize a fetch, store, read, write, fetch status or store status.
992 * Called with scache mutex held, and returns with it held, but temporarily
993 * drops it during the fetch.
995 * At most one flag can be on in flags, if this is an RPC request.
997 * Also, if we're fetching or storing data, we must ensure that we have a buffer.
999 * There are a lot of weird restrictions here; here's an attempt to explain the
1000 * rationale for the concurrency restrictions implemented in this function.
1002 * First, although the file server will break callbacks when *another* machine
1003 * modifies a file or status block, the client itself is responsible for
1004 * concurrency control on its own requests. Callback breaking events are rare,
1005 * and simply invalidate any concurrent new status info.
1007 * In the absence of callback breaking messages, we need to know how to
1008 * synchronize incoming responses describing updates to files. We synchronize
1009 * operations that update the data version by comparing the data versions.
1010 * However, updates that do not update the data, but only the status, can't be
1011 * synchronized with fetches or stores, since there's nothing to compare
1012 * to tell which operation executed first at the server.
1014 * Thus, we can allow multiple ops that change file data, or dir data, and
1015 * fetches. However, status storing ops have to be done serially.
1017 * Furthermore, certain data-changing ops are incompatible: we can't read or
1018 * write a buffer while doing a truncate. We can't read and write the same
1019 * buffer at the same time, or write while fetching or storing, or read while
1020 * fetching a buffer (this may change). We can't fetch and store at the same
1023 * With respect to status, we can't read and write at the same time, read while
1024 * fetching, write while fetching or storing, or fetch and store at the same time.
1026 * We can't allow a get callback RPC to run in concurrently with something that
1027 * will return updated status, since we could start a call, have the server
1028 * return status, have another machine make an update to the status (which
1029 * doesn't change serverModTime), have the original machine get a new callback,
1030 * and then have the original machine merge in the early, old info from the
1031 * first call. At this point, the easiest way to avoid this problem is to have
1032 * getcallback calls conflict with all others for the same vnode. Other calls
1033 * to cm_MergeStatus that aren't associated with calls to cm_SyncOp on the same
1034 * vnode must be careful not to merge in their status unless they have obtained
1035 * a callback from the start of their call.
1037 * Note added 1/23/96
1038 * Concurrent StoreData RPC's can cause trouble if the file is being extended.
1039 * Each such RPC passes a FileLength parameter, which the server uses to do
1040 * pre-truncation if necessary. So if two RPC's are processed out of order at
1041 * the server, the one with the smaller FileLength will be processed last,
1042 * possibly resulting in a bogus truncation. The simplest way to avoid this
1043 * is to serialize all StoreData RPC's. This is the reason we defined
1044 * CM_SCACHESYNC_STOREDATA_EXCL and CM_SCACHEFLAG_DATASTORING.
1046 long cm_SyncOp(cm_scache_t *scp, cm_buf_t *bufp, cm_user_t *userp, cm_req_t *reqp,
1047 afs_uint32 rights, afs_uint32 flags)
1049 osi_queueData_t *qdp;
1052 afs_uint32 outRights;
1054 afs_uint32 sleep_scp_flags = 0;
1055 afs_uint32 sleep_buf_cmflags = 0;
1056 afs_uint32 sleep_scp_bufs = 0;
1059 /* lookup this first */
1060 bufLocked = flags & CM_SCACHESYNC_BUFLOCKED;
1063 osi_assertx(bufp->refCount > 0, "cm_buf_t refCount 0");
1066 /* Do the access check. Now we don't really do the access check
1067 * atomically, since the caller doesn't expect the parent dir to be
1068 * returned locked, and that is what we'd have to do to prevent a
1069 * callback breaking message on the parent due to a setacl call from
1070 * being processed while we're running. So, instead, we check things
1071 * here, and if things look fine with the access, we proceed to finish
1072 * the rest of this check. Sort of a hack, but probably good enough.
1076 if (flags & CM_SCACHESYNC_FETCHSTATUS) {
1077 /* if we're bringing in a new status block, ensure that
1078 * we aren't already doing so, and that no one is
1079 * changing the status concurrently, either. We need
1080 * to do this, even if the status is of a different
1081 * type, since we don't have the ability to figure out,
1082 * in the AFS 3 protocols, which status-changing
1083 * operation ran first, or even which order a read and
1084 * a write occurred in.
1086 if (scp->flags & (CM_SCACHEFLAG_FETCHING | CM_SCACHEFLAG_STORING
1087 | CM_SCACHEFLAG_SIZESTORING | CM_SCACHEFLAG_GETCALLBACK)) {
1088 osi_Log1(afsd_logp, "CM SyncOp scp 0x%p is FETCHING|STORING|SIZESTORING|GETCALLBACK want FETCHSTATUS", scp);
1092 if (flags & (CM_SCACHESYNC_STORESIZE | CM_SCACHESYNC_STORESTATUS
1093 | CM_SCACHESYNC_SETSIZE | CM_SCACHESYNC_GETCALLBACK)) {
1094 /* if we're going to make an RPC to change the status, make sure
1095 * that no one is bringing in or sending out the status.
1097 if (scp->flags & (CM_SCACHEFLAG_FETCHING | CM_SCACHEFLAG_STORING |
1098 CM_SCACHEFLAG_SIZESTORING | CM_SCACHEFLAG_GETCALLBACK)) {
1099 osi_Log1(afsd_logp, "CM SyncOp scp 0x%p is FETCHING|STORING|SIZESTORING|GETCALLBACK want STORESIZE|STORESTATUS|SETSIZE|GETCALLBACK", scp);
1102 if (scp->bufReadsp || scp->bufWritesp) {
1103 osi_Log1(afsd_logp, "CM SyncOp scp 0x%p is bufRead|bufWrite want STORESIZE|STORESTATUS|SETSIZE|GETCALLBACK", scp);
1107 if (flags & CM_SCACHESYNC_FETCHDATA) {
1108 /* if we're bringing in a new chunk of data, make sure that
1109 * nothing is happening to that chunk, and that we aren't
1110 * changing the basic file status info, either.
1112 if (scp->flags & (CM_SCACHEFLAG_FETCHING | CM_SCACHEFLAG_STORING
1113 | CM_SCACHEFLAG_SIZESTORING | CM_SCACHEFLAG_GETCALLBACK)) {
1114 osi_Log1(afsd_logp, "CM SyncOp scp 0x%p is FETCHING|STORING|SIZESTORING|GETCALLBACK want FETCHDATA", scp);
1117 if (bufp && (bufp->cmFlags & (CM_BUF_CMFETCHING | CM_BUF_CMSTORING | CM_BUF_CMWRITING))) {
1118 osi_Log2(afsd_logp, "CM SyncOp scp 0x%p bufp 0x%p is BUF_CMFETCHING|BUF_CMSTORING|BUF_CMWRITING want FETCHDATA", scp, bufp);
1122 if (flags & CM_SCACHESYNC_STOREDATA) {
1123 /* same as fetch data */
1124 if (scp->flags & (CM_SCACHEFLAG_FETCHING | CM_SCACHEFLAG_STORING
1125 | CM_SCACHEFLAG_SIZESTORING | CM_SCACHEFLAG_GETCALLBACK)) {
1126 osi_Log1(afsd_logp, "CM SyncOp scp 0x%p is FETCHING|STORING|SIZESTORING|GETCALLBACK want STOREDATA", scp);
1129 if (bufp && (bufp->cmFlags & (CM_BUF_CMFETCHING | CM_BUF_CMSTORING | CM_BUF_CMWRITING))) {
1130 osi_Log2(afsd_logp, "CM SyncOp scp 0x%p bufp 0x%p is BUF_CMFETCHING|BUF_CMSTORING|BUF_CMWRITING want STOREDATA", scp, bufp);
1135 if (flags & CM_SCACHESYNC_STOREDATA_EXCL) {
1136 /* Don't allow concurrent StoreData RPC's */
1137 if (scp->flags & CM_SCACHEFLAG_DATASTORING) {
1138 osi_Log1(afsd_logp, "CM SyncOp scp 0x%p is DATASTORING want STOREDATA_EXCL", scp);
1143 if (flags & CM_SCACHESYNC_ASYNCSTORE) {
1144 /* Don't allow more than one BKG store request */
1145 if (scp->flags & CM_SCACHEFLAG_ASYNCSTORING) {
1146 osi_Log1(afsd_logp, "CM SyncOp scp 0x%p is ASYNCSTORING want ASYNCSTORE", scp);
1151 if (flags & CM_SCACHESYNC_LOCK) {
1152 /* Don't allow concurrent fiddling with lock lists */
1153 if (scp->flags & CM_SCACHEFLAG_LOCKING) {
1154 osi_Log1(afsd_logp, "CM SyncOp scp 0x%p is LOCKING want LOCK", scp);
1159 /* now the operations that don't correspond to making RPCs */
1160 if (flags & CM_SCACHESYNC_GETSTATUS) {
1161 /* we can use the status that's here, if we're not
1162 * bringing in new status.
1164 if (scp->flags & (CM_SCACHEFLAG_FETCHING)) {
1165 osi_Log1(afsd_logp, "CM SyncOp scp 0x%p is FETCHING want GETSTATUS", scp);
1169 if (flags & CM_SCACHESYNC_SETSTATUS) {
1170 /* we can make a change to the local status, as long as
1171 * the status isn't changing now.
1173 * If we're fetching or storing a chunk of data, we can
1174 * change the status locally, since the fetch/store
1175 * operations don't change any of the data that we're
1178 if (scp->flags & (CM_SCACHEFLAG_FETCHING | CM_SCACHEFLAG_STORING | CM_SCACHEFLAG_SIZESTORING)) {
1179 osi_Log1(afsd_logp, "CM SyncOp scp 0x%p is FETCHING|STORING|SIZESTORING want SETSTATUS", scp);
1183 if (flags & CM_SCACHESYNC_READ) {
1184 /* we're going to read the data, make sure that the
1185 * status is available, and that the data is here. It
1186 * is OK to read while storing the data back.
1188 if (scp->flags & CM_SCACHEFLAG_FETCHING) {
1189 osi_Log1(afsd_logp, "CM SyncOp scp 0x%p is FETCHING want READ", scp);
1192 if (bufp && ((bufp->cmFlags & (CM_BUF_CMFETCHING | CM_BUF_CMFULLYFETCHED)) == CM_BUF_CMFETCHING)) {
1193 osi_Log2(afsd_logp, "CM SyncOp scp 0x%p bufp 0x%p is BUF_CMFETCHING want READ", scp, bufp);
1196 if (bufp && (bufp->cmFlags & CM_BUF_CMWRITING)) {
1197 osi_Log2(afsd_logp, "CM SyncOp scp 0x%p bufp 0x%p is BUF_CMWRITING want READ", scp, bufp);
1201 if (flags & CM_SCACHESYNC_WRITE) {
1202 /* don't write unless the status is stable and the chunk
1205 if (scp->flags & (CM_SCACHEFLAG_FETCHING | CM_SCACHEFLAG_STORING
1206 | CM_SCACHEFLAG_SIZESTORING)) {
1207 osi_Log1(afsd_logp, "CM SyncOp scp 0x%p is FETCHING|STORING|SIZESTORING want WRITE", scp);
1210 if (bufp && (bufp->cmFlags & (CM_BUF_CMFETCHING |
1212 CM_BUF_CMWRITING))) {
1213 osi_Log3(afsd_logp, "CM SyncOp scp 0x%p bufp 0x%p is %s want WRITE",
1215 ((bufp->cmFlags & CM_BUF_CMFETCHING) ? "CM_BUF_CMFETCHING":
1216 ((bufp->cmFlags & CM_BUF_CMSTORING) ? "CM_BUF_CMSTORING" :
1217 ((bufp->cmFlags & CM_BUF_CMWRITING) ? "CM_BUF_CMWRITING" :
1223 // yj: modified this so that callback only checked if we're
1224 // not checking something on /afs
1225 /* fix the conditional to match the one in cm_HaveCallback */
1226 if ((flags & CM_SCACHESYNC_NEEDCALLBACK)
1227 #ifdef AFS_FREELANCE_CLIENT
1228 && (!cm_freelanceEnabled ||
1229 !(scp->fid.vnode==0x1 && scp->fid.unique==0x1) ||
1230 scp->fid.cell!=AFS_FAKE_ROOT_CELL_ID ||
1231 scp->fid.volume!=AFS_FAKE_ROOT_VOL_ID ||
1232 cm_fakeDirCallback < 2)
1233 #endif /* AFS_FREELANCE_CLIENT */
1235 if ((flags & CM_SCACHESYNC_FORCECB) || !cm_HaveCallback(scp)) {
1236 osi_Log1(afsd_logp, "CM SyncOp getting callback on scp 0x%p",
1239 lock_ReleaseMutex(&bufp->mx);
1240 code = cm_GetCallback(scp, userp, reqp, (flags & CM_SCACHESYNC_FORCECB)?1:0);
1242 lock_ReleaseWrite(&scp->rw);
1243 lock_ObtainMutex(&bufp->mx);
1244 lock_ObtainWrite(&scp->rw);
1248 flags &= ~CM_SCACHESYNC_FORCECB; /* only force once */
1254 /* can't check access rights without a callback */
1255 osi_assertx(flags & CM_SCACHESYNC_NEEDCALLBACK, "!CM_SCACHESYNC_NEEDCALLBACK");
1257 if ((rights & PRSFS_WRITE) && (scp->flags & CM_SCACHEFLAG_RO))
1258 return CM_ERROR_READONLY;
1260 if (cm_HaveAccessRights(scp, userp, rights, &outRights)) {
1261 if (~outRights & rights)
1262 return CM_ERROR_NOACCESS;
1265 /* we don't know the required access rights */
1266 if (bufLocked) lock_ReleaseMutex(&bufp->mx);
1267 code = cm_GetAccessRights(scp, userp, reqp);
1269 lock_ReleaseWrite(&scp->rw);
1270 lock_ObtainMutex(&bufp->mx);
1271 lock_ObtainWrite(&scp->rw);
1279 /* if we get here, we're happy */
1283 /* first check if we're not supposed to wait: fail
1284 * in this case, returning with everything still locked.
1286 if (flags & CM_SCACHESYNC_NOWAIT)
1287 return CM_ERROR_WOULDBLOCK;
1289 /* These are used for minidump debugging */
1290 sleep_scp_flags = scp->flags; /* so we know why we slept */
1291 sleep_buf_cmflags = bufp ? bufp->cmFlags : 0;
1292 sleep_scp_bufs = (scp->bufReadsp ? 1 : 0) | (scp->bufWritesp ? 2 : 0);
1294 /* wait here, then try again */
1295 osi_Log1(afsd_logp, "CM SyncOp sleeping scp 0x%p", scp);
1296 if ( scp->flags & CM_SCACHEFLAG_WAITING ) {
1298 scp->waitRequests++;
1299 osi_Log3(afsd_logp, "CM SyncOp CM_SCACHEFLAG_WAITING already set for 0x%p; %d threads; %d requests",
1300 scp, scp->waitCount, scp->waitRequests);
1302 osi_Log1(afsd_logp, "CM SyncOp CM_SCACHEFLAG_WAITING set for 0x%p", scp);
1303 scp->flags |= CM_SCACHEFLAG_WAITING;
1304 scp->waitCount = scp->waitRequests = 1;
1307 cm_SyncOpAddToWaitQueue(scp, flags, bufp);
1311 lock_ReleaseMutex(&bufp->mx);
1312 osi_SleepW((LONG_PTR) &scp->flags, &scp->rw);
1314 lock_ObtainMutex(&bufp->mx);
1315 lock_ObtainWrite(&scp->rw);
1316 } while (!cm_SyncOpCheckContinue(scp, flags, bufp));
1318 smb_UpdateServerPriority();
1321 osi_Log3(afsd_logp, "CM SyncOp woke! scp 0x%p; still waiting %d threads of %d requests",
1322 scp, scp->waitCount, scp->waitRequests);
1323 if (scp->waitCount == 0) {
1324 osi_Log1(afsd_logp, "CM SyncOp CM_SCACHEFLAG_WAITING reset for 0x%p", scp);
1325 scp->flags &= ~CM_SCACHEFLAG_WAITING;
1326 scp->waitRequests = 0;
1328 } /* big while loop */
1330 /* now, update the recorded state for RPC-type calls */
1331 if (flags & CM_SCACHESYNC_FETCHSTATUS)
1332 scp->flags |= CM_SCACHEFLAG_FETCHING;
1333 if (flags & CM_SCACHESYNC_STORESTATUS)
1334 scp->flags |= CM_SCACHEFLAG_STORING;
1335 if (flags & CM_SCACHESYNC_STORESIZE)
1336 scp->flags |= CM_SCACHEFLAG_SIZESTORING;
1337 if (flags & CM_SCACHESYNC_GETCALLBACK)
1338 scp->flags |= CM_SCACHEFLAG_GETCALLBACK;
1339 if (flags & CM_SCACHESYNC_STOREDATA_EXCL)
1340 scp->flags |= CM_SCACHEFLAG_DATASTORING;
1341 if (flags & CM_SCACHESYNC_ASYNCSTORE)
1342 scp->flags |= CM_SCACHEFLAG_ASYNCSTORING;
1343 if (flags & CM_SCACHESYNC_LOCK)
1344 scp->flags |= CM_SCACHEFLAG_LOCKING;
1346 /* now update the buffer pointer */
1347 if (flags & CM_SCACHESYNC_FETCHDATA) {
1348 /* ensure that the buffer isn't already in the I/O list */
1350 for(qdp = scp->bufReadsp; qdp; qdp = (osi_queueData_t *) osi_QNext(&qdp->q)) {
1351 tbufp = osi_GetQData(qdp);
1352 osi_assertx(tbufp != bufp, "unexpected cm_buf_t value");
1356 /* queue a held reference to the buffer in the "reading" I/O list */
1357 qdp = osi_QDAlloc();
1358 osi_SetQData(qdp, bufp);
1361 bufp->cmFlags |= CM_BUF_CMFETCHING;
1363 osi_QAdd((osi_queue_t **) &scp->bufReadsp, &qdp->q);
1366 if (flags & CM_SCACHESYNC_STOREDATA) {
1367 /* ensure that the buffer isn't already in the I/O list */
1369 for(qdp = scp->bufWritesp; qdp; qdp = (osi_queueData_t *) osi_QNext(&qdp->q)) {
1370 tbufp = osi_GetQData(qdp);
1371 osi_assertx(tbufp != bufp, "unexpected cm_buf_t value");
1375 /* queue a held reference to the buffer in the "writing" I/O list */
1376 qdp = osi_QDAlloc();
1377 osi_SetQData(qdp, bufp);
1380 bufp->cmFlags |= CM_BUF_CMSTORING;
1382 osi_QAdd((osi_queue_t **) &scp->bufWritesp, &qdp->q);
1385 if (flags & CM_SCACHESYNC_WRITE) {
1386 /* mark the buffer as being written to. */
1388 bufp->cmFlags |= CM_BUF_CMWRITING;
1395 /* for those syncops that setup for RPCs.
1396 * Called with scache locked.
1398 void cm_SyncOpDone(cm_scache_t *scp, cm_buf_t *bufp, afs_uint32 flags)
1400 osi_queueData_t *qdp;
1403 lock_AssertWrite(&scp->rw);
1405 /* now, update the recorded state for RPC-type calls */
1406 if (flags & CM_SCACHESYNC_FETCHSTATUS)
1407 scp->flags &= ~CM_SCACHEFLAG_FETCHING;
1408 if (flags & CM_SCACHESYNC_STORESTATUS)
1409 scp->flags &= ~CM_SCACHEFLAG_STORING;
1410 if (flags & CM_SCACHESYNC_STORESIZE)
1411 scp->flags &= ~CM_SCACHEFLAG_SIZESTORING;
1412 if (flags & CM_SCACHESYNC_GETCALLBACK)
1413 scp->flags &= ~CM_SCACHEFLAG_GETCALLBACK;
1414 if (flags & CM_SCACHESYNC_STOREDATA_EXCL)
1415 scp->flags &= ~CM_SCACHEFLAG_DATASTORING;
1416 if (flags & CM_SCACHESYNC_ASYNCSTORE)
1417 scp->flags &= ~CM_SCACHEFLAG_ASYNCSTORING;
1418 if (flags & CM_SCACHESYNC_LOCK)
1419 scp->flags &= ~CM_SCACHEFLAG_LOCKING;
1421 /* now update the buffer pointer */
1422 if (flags & CM_SCACHESYNC_FETCHDATA) {
1425 /* ensure that the buffer isn't already in the I/O list */
1426 for(qdp = scp->bufReadsp; qdp; qdp = (osi_queueData_t *) osi_QNext(&qdp->q)) {
1427 tbufp = osi_GetQData(qdp);
1432 osi_QRemove((osi_queue_t **) &scp->bufReadsp, &qdp->q);
1437 bufp->cmFlags &= ~(CM_BUF_CMFETCHING | CM_BUF_CMFULLYFETCHED);
1438 if (bufp->flags & CM_BUF_WAITING) {
1439 osi_Log2(afsd_logp, "CM SyncOpDone Waking [scp 0x%p] bufp 0x%p", scp, bufp);
1440 osi_Wakeup((LONG_PTR) &bufp);
1447 /* now update the buffer pointer */
1448 if (flags & CM_SCACHESYNC_STOREDATA) {
1450 /* ensure that the buffer isn't already in the I/O list */
1451 for(qdp = scp->bufWritesp; qdp; qdp = (osi_queueData_t *) osi_QNext(&qdp->q)) {
1452 tbufp = osi_GetQData(qdp);
1457 osi_QRemove((osi_queue_t **) &scp->bufWritesp, &qdp->q);
1462 bufp->cmFlags &= ~CM_BUF_CMSTORING;
1463 if (bufp->flags & CM_BUF_WAITING) {
1464 osi_Log2(afsd_logp, "CM SyncOpDone Waking [scp 0x%p] bufp 0x%p", scp, bufp);
1465 osi_Wakeup((LONG_PTR) &bufp);
1472 if (flags & CM_SCACHESYNC_WRITE) {
1474 osi_assertx(bufp->cmFlags & CM_BUF_CMWRITING, "!CM_BUF_CMWRITING");
1476 bufp->cmFlags &= ~CM_BUF_CMWRITING;
1480 /* and wakeup anyone who is waiting */
1481 if (scp->flags & CM_SCACHEFLAG_WAITING) {
1482 osi_Log1(afsd_logp, "CM SyncOpDone Waking scp 0x%p", scp);
1483 osi_Wakeup((LONG_PTR) &scp->flags);
1487 /* merge in a response from an RPC. The scp must be locked, and the callback
1490 * Don't overwrite any status info that is dirty, since we could have a store
1491 * operation (such as store data) that merges some info in, and we don't want
1492 * to lose the local updates. Typically, there aren't many updates we do
1493 * locally, anyway, probably only mtime.
1495 * There is probably a bug in here where a chmod (which doesn't change
1496 * serverModTime) that occurs between two fetches, both of whose responses are
1497 * handled after the callback breaking is done, but only one of whose calls
1498 * started before that, can cause old info to be merged from the first call.
1500 void cm_MergeStatus(cm_scache_t *dscp,
1501 cm_scache_t *scp, AFSFetchStatus *statusp,
1502 AFSVolSync *volsyncp,
1503 cm_user_t *userp, afs_uint32 flags)
1505 afs_uint64 dataVersion;
1507 // yj: i want to create some fake status for the /afs directory and the
1508 // entries under that directory
1509 #ifdef AFS_FREELANCE_CLIENT
1510 if (cm_freelanceEnabled && scp == cm_data.rootSCachep) {
1511 osi_Log0(afsd_logp,"cm_MergeStatus Freelance cm_data.rootSCachep");
1512 statusp->InterfaceVersion = 0x1;
1513 statusp->FileType = CM_SCACHETYPE_DIRECTORY;
1514 statusp->LinkCount = scp->linkCount;
1515 statusp->Length = cm_fakeDirSize;
1516 statusp->Length_hi = 0;
1517 statusp->DataVersion = (afs_uint32)(cm_data.fakeDirVersion & 0xFFFFFFFF);
1518 statusp->Author = 0x1;
1519 statusp->Owner = 0x0;
1520 statusp->CallerAccess = 0x9;
1521 statusp->AnonymousAccess = 0x9;
1522 statusp->UnixModeBits = 0777;
1523 statusp->ParentVnode = 0x1;
1524 statusp->ParentUnique = 0x1;
1525 statusp->ResidencyMask = 0;
1526 statusp->ClientModTime = FakeFreelanceModTime;
1527 statusp->ServerModTime = FakeFreelanceModTime;
1529 statusp->SyncCounter = 0;
1530 statusp->dataVersionHigh = (afs_uint32)(cm_data.fakeDirVersion >> 32);
1531 statusp->errorCode = 0;
1533 #endif /* AFS_FREELANCE_CLIENT */
1535 if (statusp->errorCode != 0) {
1536 scp->flags |= CM_SCACHEFLAG_EACCESS;
1537 osi_Log2(afsd_logp, "Merge, Failure scp %x code 0x%x", scp, statusp->errorCode);
1539 scp->fileType = 0; /* unknown */
1541 scp->serverModTime = 0;
1542 scp->clientModTime = 0;
1543 scp->length.LowPart = 0;
1544 scp->length.HighPart = 0;
1545 scp->serverLength.LowPart = 0;
1546 scp->serverLength.HighPart = 0;
1550 scp->unixModeBits = 0;
1552 scp->dataVersion = 0;
1553 scp->bufDataVersionLow = 0;
1556 scp->parentVnode = dscp->fid.vnode;
1557 scp->parentUnique = dscp->fid.unique;
1559 scp->parentVnode = 0;
1560 scp->parentUnique = 0;
1564 scp->flags &= ~CM_SCACHEFLAG_EACCESS;
1567 dataVersion = statusp->dataVersionHigh;
1569 dataVersion |= statusp->DataVersion;
1571 if (!(flags & CM_MERGEFLAG_FORCE) && dataVersion < scp->dataVersion) {
1572 struct cm_cell *cellp;
1574 cellp = cm_FindCellByID(scp->fid.cell, 0);
1575 if (scp->cbServerp) {
1576 struct cm_volume *volp = NULL;
1578 cm_GetVolumeByID(cellp, scp->fid.volume, userp,
1579 (cm_req_t *) NULL, CM_GETVOL_FLAG_CREATE, &volp);
1580 osi_Log2(afsd_logp, "old data from server %x volume %s",
1581 scp->cbServerp->addr.sin_addr.s_addr,
1582 volp ? volp->namep : "(unknown)");
1586 osi_Log3(afsd_logp, "Bad merge, scp %x, scp dv %d, RPC dv %d",
1587 scp, scp->dataVersion, dataVersion);
1588 /* we have a number of data fetch/store operations running
1589 * concurrently, and we can tell which one executed last at the
1590 * server by its mtime.
1591 * Choose the one with the largest mtime, and ignore the rest.
1593 * These concurrent calls are incompatible with setting the
1594 * mtime, so we won't have a locally changed mtime here.
1596 * We could also have ACL info for a different user than usual,
1597 * in which case we have to do that part of the merge, anyway.
1598 * We won't have to worry about the info being old, since we
1599 * won't have concurrent calls
1600 * that change file status running from this machine.
1602 * Added 3/17/98: if we see data version regression on an RO
1603 * file, it's probably due to a server holding an out-of-date
1604 * replica, rather than to concurrent RPC's. Failures to
1605 * release replicas are now flagged by the volserver, but only
1606 * since AFS 3.4 5.22, so there are plenty of clients getting
1607 * out-of-date replicas out there.
1609 * If we discover an out-of-date replica, by this time it's too
1610 * late to go to another server and retry. Also, we can't
1611 * reject the merge, because then there is no way for
1612 * GetAccess to do its work, and the caller gets into an
1613 * infinite loop. So we just grin and bear it.
1615 if (!(scp->flags & CM_SCACHEFLAG_RO))
1619 scp->serverModTime = statusp->ServerModTime;
1621 if (!(scp->mask & CM_SCACHEMASK_CLIENTMODTIME)) {
1622 scp->clientModTime = statusp->ClientModTime;
1624 if (!(scp->mask & CM_SCACHEMASK_LENGTH)) {
1625 scp->length.LowPart = statusp->Length;
1626 scp->length.HighPart = statusp->Length_hi;
1629 scp->serverLength.LowPart = statusp->Length;
1630 scp->serverLength.HighPart = statusp->Length_hi;
1632 scp->linkCount = statusp->LinkCount;
1633 scp->owner = statusp->Owner;
1634 scp->group = statusp->Group;
1635 scp->unixModeBits = statusp->UnixModeBits & 07777;
1637 if (statusp->FileType == File)
1638 scp->fileType = CM_SCACHETYPE_FILE;
1639 else if (statusp->FileType == Directory)
1640 scp->fileType = CM_SCACHETYPE_DIRECTORY;
1641 else if (statusp->FileType == SymbolicLink) {
1642 if ((scp->unixModeBits & 0111) == 0)
1643 scp->fileType = CM_SCACHETYPE_MOUNTPOINT;
1645 scp->fileType = CM_SCACHETYPE_SYMLINK;
1648 osi_Log2(afsd_logp, "Merge, Invalid File Type (%d), scp %x", statusp->FileType, scp);
1649 scp->fileType = CM_SCACHETYPE_INVALID; /* invalid */
1651 /* and other stuff */
1652 scp->parentVnode = statusp->ParentVnode;
1653 scp->parentUnique = statusp->ParentUnique;
1655 /* and merge in the private acl cache info, if this is more than the public
1656 * info; merge in the public stuff in any case.
1658 scp->anyAccess = statusp->AnonymousAccess;
1660 if (userp != NULL) {
1661 cm_AddACLCache(scp, userp, statusp->CallerAccess);
1664 if (scp->dataVersion != 0 &&
1665 (!(flags & CM_MERGEFLAG_DIROP) && dataVersion != scp->dataVersion ||
1666 (flags & CM_MERGEFLAG_DIROP) && dataVersion - scp->dataVersion > 1)) {
1668 * We now know that all of the data buffers that we have associated
1669 * with this scp are invalid. Subsequent operations will go faster
1670 * if the buffers are removed from the hash tables.
1672 * We do not remove directory buffers if the dataVersion delta is 1 because
1673 * those version numbers will be updated as part of the directory operation.
1678 cm_buf_t *bp, *prevBp, *nextBp;
1680 lock_ObtainWrite(&buf_globalLock);
1681 i = BUF_FILEHASH(&scp->fid);
1682 for (bp = cm_data.buf_fileHashTablepp[i]; bp; bp=nextBp)
1684 nextBp = bp->fileHashp;
1686 * if the buffer belongs to this stat cache entry
1687 * and the buffer mutex can be obtained, check the
1688 * reference count and if it is zero, remove the buffer
1689 * from the hash tables. If there are references,
1690 * the buffer might be updated to the current version
1691 * so leave it in place.
1693 if (cm_FidCmp(&scp->fid, &bp->fid) == 0 &&
1694 lock_TryMutex(&bp->mx)) {
1695 if (bp->refCount == 0 &&
1696 !(bp->flags & CM_BUF_READING | CM_BUF_WRITING | CM_BUF_DIRTY)) {
1697 prevBp = bp->fileHashBackp;
1698 bp->fileHashBackp = bp->fileHashp = NULL;
1700 prevBp->fileHashp = nextBp;
1702 cm_data.buf_fileHashTablepp[i] = nextBp;
1704 nextBp->fileHashBackp = prevBp;
1706 j = BUF_HASH(&bp->fid, &bp->offset);
1707 lbpp = &(cm_data.buf_scacheHashTablepp[j]);
1708 for(tbp = *lbpp; tbp; lbpp = &tbp->hashp, tbp = *lbpp) {
1713 *lbpp = bp->hashp; /* hash out */
1716 bp->flags &= ~CM_BUF_INHASH;
1718 lock_ReleaseMutex(&bp->mx);
1721 lock_ReleaseWrite(&buf_globalLock);
1724 /* We maintain a range of buffer dataVersion values which are considered
1725 * valid. This avoids the need to update the dataVersion on each buffer
1726 * object during an uncontested storeData operation. As a result this
1727 * merge status no longer has performance characteristics derived from
1728 * the size of the file.
1730 if (((flags & CM_MERGEFLAG_STOREDATA) && dataVersion - scp->dataVersion > 1) ||
1731 (!(flags & CM_MERGEFLAG_STOREDATA) && scp->dataVersion != dataVersion) ||
1732 scp->bufDataVersionLow == 0)
1733 scp->bufDataVersionLow = dataVersion;
1735 scp->dataVersion = dataVersion;
1738 /* note that our stat cache info is incorrect, so force us eventually
1739 * to stat the file again. There may be dirty data associated with
1740 * this vnode, and we want to preserve that information.
1742 * This function works by simply simulating a loss of the callback.
1744 * This function must be called with the scache locked.
1746 void cm_DiscardSCache(cm_scache_t *scp)
1748 lock_AssertWrite(&scp->rw);
1749 if (scp->cbServerp) {
1750 cm_PutServer(scp->cbServerp);
1751 scp->cbServerp = NULL;
1754 scp->flags &= ~CM_SCACHEFLAG_CALLBACK;
1755 cm_dnlcPurgedp(scp);
1756 cm_dnlcPurgevp(scp);
1757 cm_FreeAllACLEnts(scp);
1759 if (scp->fileType == CM_SCACHETYPE_DFSLINK)
1760 cm_VolStatus_Invalidate_DFS_Mapping(scp);
1762 /* Force mount points and symlinks to be re-evaluated */
1763 scp->mountPointStringp[0] = '\0';
1766 void cm_AFSFidFromFid(AFSFid *afsFidp, cm_fid_t *fidp)
1768 afsFidp->Volume = fidp->volume;
1769 afsFidp->Vnode = fidp->vnode;
1770 afsFidp->Unique = fidp->unique;
1773 #ifdef DEBUG_REFCOUNT
1774 void cm_HoldSCacheNoLockDbg(cm_scache_t *scp, char * file, long line)
1776 void cm_HoldSCacheNoLock(cm_scache_t *scp)
1781 osi_assertx(scp != NULL, "null cm_scache_t");
1782 lock_AssertAny(&cm_scacheLock);
1783 refCount = InterlockedIncrement(&scp->refCount);
1784 #ifdef DEBUG_REFCOUNT
1785 osi_Log2(afsd_logp,"cm_HoldSCacheNoLock scp 0x%p ref %d",scp, refCount);
1786 afsi_log("%s:%d cm_HoldSCacheNoLock scp 0x%p, ref %d", file, line, scp, refCount);
1790 #ifdef DEBUG_REFCOUNT
1791 void cm_HoldSCacheDbg(cm_scache_t *scp, char * file, long line)
1793 void cm_HoldSCache(cm_scache_t *scp)
1798 osi_assertx(scp != NULL, "null cm_scache_t");
1799 lock_ObtainRead(&cm_scacheLock);
1800 refCount = InterlockedIncrement(&scp->refCount);
1801 #ifdef DEBUG_REFCOUNT
1802 osi_Log2(afsd_logp,"cm_HoldSCache scp 0x%p ref %d",scp, refCount);
1803 afsi_log("%s:%d cm_HoldSCache scp 0x%p ref %d", file, line, scp, refCount);
1805 lock_ReleaseRead(&cm_scacheLock);
1808 #ifdef DEBUG_REFCOUNT
1809 void cm_ReleaseSCacheNoLockDbg(cm_scache_t *scp, char * file, long line)
1811 void cm_ReleaseSCacheNoLock(cm_scache_t *scp)
1815 osi_assertx(scp != NULL, "null cm_scache_t");
1816 lock_AssertAny(&cm_scacheLock);
1817 refCount = InterlockedDecrement(&scp->refCount);
1818 #ifdef DEBUG_REFCOUNT
1820 osi_Log1(afsd_logp,"cm_ReleaseSCacheNoLock about to panic scp 0x%x",scp);
1822 osi_assertx(refCount >= 0, "cm_scache_t refCount 0");
1823 #ifdef DEBUG_REFCOUNT
1824 osi_Log2(afsd_logp,"cm_ReleaseSCacheNoLock scp 0x%p ref %d",scp, refCount);
1825 afsi_log("%s:%d cm_ReleaseSCacheNoLock scp 0x%p ref %d", file, line, scp, refCount);
1829 #ifdef DEBUG_REFCOUNT
1830 void cm_ReleaseSCacheDbg(cm_scache_t *scp, char * file, long line)
1832 void cm_ReleaseSCache(cm_scache_t *scp)
1837 osi_assertx(scp != NULL, "null cm_scache_t");
1838 lock_ObtainRead(&cm_scacheLock);
1839 refCount = InterlockedDecrement(&scp->refCount);
1840 #ifdef DEBUG_REFCOUNT
1842 osi_Log1(afsd_logp,"cm_ReleaseSCache about to panic scp 0x%x",scp);
1844 osi_assertx(refCount >= 0, "cm_scache_t refCount 0");
1845 #ifdef DEBUG_REFCOUNT
1846 osi_Log2(afsd_logp,"cm_ReleaseSCache scp 0x%p ref %d",scp, refCount);
1847 afsi_log("%s:%d cm_ReleaseSCache scp 0x%p ref %d", file, line, scp, refCount);
1849 lock_ReleaseRead(&cm_scacheLock);
1852 /* just look for the scp entry to get filetype */
1853 /* doesn't need to be perfectly accurate, so locking doesn't matter too much */
1854 int cm_FindFileType(cm_fid_t *fidp)
1859 hash = CM_SCACHE_HASH(fidp);
1861 osi_assertx(fidp->cell != 0, "unassigned cell value");
1863 lock_ObtainWrite(&cm_scacheLock);
1864 for (scp=cm_data.scacheHashTablep[hash]; scp; scp=scp->nextp) {
1865 if (cm_FidCmp(fidp, &scp->fid) == 0) {
1866 lock_ReleaseWrite(&cm_scacheLock);
1867 return scp->fileType;
1870 lock_ReleaseWrite(&cm_scacheLock);
1874 /* dump all scp's that have reference count > 0 to a file.
1875 * cookie is used to identify this batch for easy parsing,
1876 * and it a string provided by a caller
1878 int cm_DumpSCache(FILE *outputFile, char *cookie, int lock)
1886 lock_ObtainRead(&cm_scacheLock);
1888 sprintf(output, "%s - dumping all scache - cm_data.currentSCaches=%d, cm_data.maxSCaches=%d\r\n", cookie, cm_data.currentSCaches, cm_data.maxSCaches);
1889 WriteFile(outputFile, output, (DWORD)strlen(output), &zilch, NULL);
1891 for (scp = cm_data.allSCachesp; scp; scp = scp->allNextp)
1893 sprintf(output, "%s scp=0x%p, fid (cell=%d, volume=%d, vnode=%d, unique=%d) volp=0x%p type=%d dv=%I64d len=0x%I64x mp='%s' flags=0x%x cb=0x%x refCount=%u\r\n",
1894 cookie, scp, scp->fid.cell, scp->fid.volume, scp->fid.vnode, scp->fid.unique,
1895 scp->volp, scp->fileType, scp->dataVersion, scp->length.QuadPart, scp->mountPointStringp, scp->flags,
1896 (unsigned long)scp->cbExpires, scp->refCount);
1897 WriteFile(outputFile, output, (DWORD)strlen(output), &zilch, NULL);
1900 sprintf(output, "%s - Done dumping all scache.\r\n", cookie);
1901 WriteFile(outputFile, output, (DWORD)strlen(output), &zilch, NULL);
1902 sprintf(output, "%s - dumping cm_data.scacheHashTable - cm_data.scacheHashTableSize=%d\r\n", cookie, cm_data.scacheHashTableSize);
1903 WriteFile(outputFile, output, (DWORD)strlen(output), &zilch, NULL);
1905 for (i = 0; i < cm_data.scacheHashTableSize; i++)
1907 for(scp = cm_data.scacheHashTablep[i]; scp; scp=scp->nextp)
1909 sprintf(output, "%s scp=0x%p, hash=%d, fid (cell=%d, volume=%d, vnode=%d, unique=%d)\r\n",
1910 cookie, scp, i, scp->fid.cell, scp->fid.volume, scp->fid.vnode, scp->fid.unique);
1911 WriteFile(outputFile, output, (DWORD)strlen(output), &zilch, NULL);
1915 sprintf(output, "%s - Done dumping cm_data.scacheHashTable\r\n", cookie);
1916 WriteFile(outputFile, output, (DWORD)strlen(output), &zilch, NULL);
1919 lock_ReleaseRead(&cm_scacheLock);