/*
* Copyright 2000, International Business Machines Corporation and others.
* All Rights Reserved.
- *
+ *
* This software has been released under the terms of the IBM Public
* License. For details, see the LICENSE file in the top-level source
* directory or online at http://www.openafs.org/dl/license10.html
*/
+#include <afsconfig.h>
#include <afs/param.h>
#include <afs/stds.h>
+#include <roken.h>
+
#include <windows.h>
#include <winsock2.h>
#include <nb30.h>
extern osi_mutex_t cm_Freelance_Lock;
#endif
+cm_scache_t *
+cm_RootSCachep(cm_user_t *userp, cm_req_t *reqp)
+{
+ afs_int32 code;
+
+ lock_ObtainWrite(&cm_data.rootSCachep->rw);
+ code = cm_SyncOp(cm_data.rootSCachep, NULL, userp, reqp, 0,
+ CM_SCACHESYNC_GETSTATUS | CM_SCACHESYNC_NEEDCALLBACK);
+ if (!code)
+ cm_SyncOpDone(cm_data.rootSCachep, NULL, CM_SCACHESYNC_NEEDCALLBACK | CM_SCACHESYNC_GETSTATUS);
+ lock_ReleaseWrite(&cm_data.rootSCachep->rw);
+
+ return cm_data.rootSCachep;
+}
+
+
/* must be called with cm_scacheLock write-locked! */
void cm_AdjustScacheLRU(cm_scache_t *scp)
{
- if (scp == cm_data.scacheLRULastp)
- cm_data.scacheLRULastp = (cm_scache_t *) osi_QPrev(&scp->q);
+ lock_AssertWrite(&cm_scacheLock);
osi_QRemoveHT((osi_queue_t **) &cm_data.scacheLRUFirstp, (osi_queue_t **) &cm_data.scacheLRULastp, &scp->q);
- osi_QAdd((osi_queue_t **) &cm_data.scacheLRUFirstp, &scp->q);
- if (!cm_data.scacheLRULastp)
- cm_data.scacheLRULastp = scp;
+ if (scp->flags & CM_SCACHEFLAG_DELETED) {
+ /* Since it has been deleted make it the first to be recycled. */
+ osi_QAddT((osi_queue_t **) &cm_data.scacheLRUFirstp, (osi_queue_t **) &cm_data.scacheLRULastp, &scp->q);
+ } else {
+ osi_QAddH((osi_queue_t **) &cm_data.scacheLRUFirstp, (osi_queue_t **) &cm_data.scacheLRULastp, &scp->q);
+ }
}
-/* call with scache write-locked and mutex held */
+/* call with cm_scacheLock write-locked and scp rw held */
void cm_RemoveSCacheFromHashTable(cm_scache_t *scp)
{
cm_scache_t **lscpp;
cm_scache_t *tscp;
int i;
-
+
+ lock_AssertWrite(&cm_scacheLock);
+ lock_AssertWrite(&scp->rw);
if (scp->flags & CM_SCACHEFLAG_INHASH) {
/* hash it out first */
i = CM_SCACHE_HASH(&scp->fid);
lscpp = &tscp->nextp, tscp = tscp->nextp) {
if (tscp == scp) {
*lscpp = scp->nextp;
- scp->flags &= ~CM_SCACHEFLAG_INHASH;
+ scp->nextp = NULL;
+ _InterlockedAnd(&scp->flags, ~CM_SCACHEFLAG_INHASH);
break;
}
}
}
}
-/* called with cm_scacheLock write-locked; recycles an existing scp.
- *
- * this function ignores all of the locking hierarchy.
- */
+/* called with cm_scacheLock and scp write-locked */
+void cm_ResetSCacheDirectory(cm_scache_t *scp, afs_int32 dirlock)
+{
+#ifdef USE_BPLUS
+ /* destroy directory Bplus Tree */
+ if (scp->dirBplus) {
+ LARGE_INTEGER start, end;
+
+ if (!dirlock && !lock_TryWrite(&scp->dirlock)) {
+ /*
+ * We are not holding the dirlock and obtaining it
+ * requires that we drop the scp->rw. As a result
+ * we will leave the dirBplus tree intact but
+ * invalidate the version number so that whatever
+ * operation is currently active can safely complete
+ * but the contents will be ignored on the next
+ * directory operation.
+ */
+ scp->dirDataVersion = CM_SCACHE_VERSION_BAD;
+ return;
+ }
+
+ QueryPerformanceCounter(&start);
+ bplus_free_tree++;
+ freeBtree(scp->dirBplus);
+ scp->dirBplus = NULL;
+ scp->dirDataVersion = CM_SCACHE_VERSION_BAD;
+ QueryPerformanceCounter(&end);
+
+ if (!dirlock)
+ lock_ReleaseWrite(&scp->dirlock);
+
+ bplus_free_time += (end.QuadPart - start.QuadPart);
+ }
+#endif
+}
+
+/* called with cm_scacheLock and scp write-locked; recycles an existing scp. */
long cm_RecycleSCache(cm_scache_t *scp, afs_int32 flags)
{
+ lock_AssertWrite(&cm_scacheLock);
+ lock_AssertWrite(&scp->rw);
+
if (scp->refCount != 0) {
return -1;
}
return -1;
}
- cm_RemoveSCacheFromHashTable(scp);
-
-#if 0
- if (flags & CM_SCACHE_RECYCLEFLAG_DESTROY_BUFFERS) {
- osi_queueData_t *qdp;
- cm_buf_t *bufp;
-
- while(qdp = scp->bufWritesp) {
- bufp = osi_GetQData(qdp);
- osi_QRemove((osi_queue_t **) &scp->bufWritesp, &qdp->q);
- osi_QDFree(qdp);
- if (bufp) {
- lock_ObtainMutex(&bufp->mx);
- bufp->cmFlags &= ~CM_BUF_CMSTORING;
- bufp->flags &= ~CM_BUF_DIRTY;
- bufp->dirty_offset = 0;
- bufp->dirty_length = 0;
- bufp->flags |= CM_BUF_ERROR;
- bufp->error = VNOVNODE;
- bufp->dataVersion = -1; /* bad */
- bufp->dirtyCounter++;
- if (bufp->flags & CM_BUF_WAITING) {
- osi_Log2(afsd_logp, "CM RecycleSCache Waking [scp 0x%x] bufp 0x%x", scp, bufp);
- osi_Wakeup((long) &bufp);
- }
- lock_ReleaseMutex(&bufp->mx);
- buf_Release(bufp);
- }
- }
- while(qdp = scp->bufReadsp) {
- bufp = osi_GetQData(qdp);
- osi_QRemove((osi_queue_t **) &scp->bufReadsp, &qdp->q);
- osi_QDFree(qdp);
- if (bufp) {
- lock_ObtainMutex(&bufp->mx);
- bufp->cmFlags &= ~CM_BUF_CMFETCHING;
- bufp->flags &= ~CM_BUF_DIRTY;
- bufp->dirty_offset = 0;
- bufp->dirty_length = 0;
- bufp->flags |= CM_BUF_ERROR;
- bufp->error = VNOVNODE;
- bufp->dataVersion = -1; /* bad */
- bufp->dirtyCounter++;
- if (bufp->flags & CM_BUF_WAITING) {
- osi_Log2(afsd_logp, "CM RecycleSCache Waking [scp 0x%x] bufp 0x%x", scp, bufp);
- osi_Wakeup((long) &bufp);
- }
- lock_ReleaseMutex(&bufp->mx);
- buf_Release(bufp);
- }
- }
- buf_CleanDirtyBuffers(scp);
- } else {
- /* look for things that shouldn't still be set */
- osi_assertx(scp->bufWritesp == NULL, "non-null cm_scache_t bufWritesp");
- osi_assertx(scp->bufReadsp == NULL, "non-null cm_scache_t bufReadsp");
- }
-#endif
/* invalidate so next merge works fine;
* also initialize some flags */
scp->fileType = 0;
- scp->flags &= ~(CM_SCACHEFLAG_STATD
+ _InterlockedAnd(&scp->flags,
+ ~(CM_SCACHEFLAG_STATD
| CM_SCACHEFLAG_DELETED
| CM_SCACHEFLAG_RO
| CM_SCACHEFLAG_PURERO
| CM_SCACHEFLAG_OVERQUOTA
| CM_SCACHEFLAG_OUTOFSPACE
- | CM_SCACHEFLAG_EACCESS);
+ | CM_SCACHEFLAG_EACCESS));
scp->serverModTime = 0;
- scp->dataVersion = 0;
+ scp->dataVersion = CM_SCACHE_VERSION_BAD;
+ scp->bufDataVersionLow = CM_SCACHE_VERSION_BAD;
scp->bulkStatProgress = hzero;
scp->waitCount = 0;
scp->waitQueueT = NULL;
scp->cbServerp = NULL;
}
scp->cbExpires = 0;
+ scp->volumeCreationDate = 0;
scp->fid.vnode = 0;
scp->fid.volume = 0;
scp->fid.unique = 0;
scp->fid.cell = 0;
+ scp->fid.hash = 0;
/* remove from dnlc */
cm_dnlcPurgedp(scp);
* tried to store this to server but failed */
scp->mask = 0;
- /* drop held volume ref */
- if (scp->volp) {
- cm_PutVolume(scp->volp);
- scp->volp = NULL;
- }
-
/* discard symlink info */
scp->mountPointStringp[0] = '\0';
memset(&scp->mountRootFid, 0, sizeof(cm_fid_t));
scp->serverLock = (-1);
scp->exclusiveLocks = 0;
scp->sharedLocks = 0;
- scp->lockDataVersion = -1;
+ scp->lockDataVersion = CM_SCACHE_VERSION_BAD;
+ scp->fsLockCount = 0;
/* not locked, but there can be no references to this guy
* while we hold the global refcount lock.
*/
cm_FreeAllACLEnts(scp);
-#ifdef USE_BPLUS
- /* destroy directory Bplus Tree */
- if (scp->dirBplus) {
- LARGE_INTEGER start, end;
- QueryPerformanceCounter(&start);
- bplus_free_tree++;
- freeBtree(scp->dirBplus);
- scp->dirBplus = NULL;
- QueryPerformanceCounter(&end);
-
- bplus_free_time += (end.QuadPart - start.QuadPart);
- }
-#endif
+ cm_ResetSCacheDirectory(scp, 0);
return 0;
}
-/* called with cm_scacheLock write-locked; find a vnode to recycle.
+/*
+ * called with cm_scacheLock write-locked; find a vnode to recycle.
* Can allocate a new one if desperate, or if below quota (cm_data.maxSCaches).
+ * returns scp->rw write-locked.
*/
cm_scache_t *cm_GetNewSCache(void)
{
cm_scache_t *scp;
int retry = 0;
-#if 0
- /* first pass - look for deleted objects */
- for ( scp = cm_data.scacheLRULastp;
- scp;
- scp = (cm_scache_t *) osi_QPrev(&scp->q))
- {
- osi_assertx(scp >= cm_data.scacheBaseAddress && scp < (cm_scache_t *)cm_data.scacheHashTablep,
- "invalid cm_scache_t address");
-
- if (scp->refCount == 0) {
- if (scp->flags & CM_SCACHEFLAG_DELETED) {
- osi_Log1(afsd_logp, "GetNewSCache attempting to recycle deleted scp 0x%x", scp);
- if (!cm_RecycleSCache(scp, CM_SCACHE_RECYCLEFLAG_DESTROY_BUFFERS)) {
-
- /* we found an entry, so return it */
- /* now remove from the LRU queue and put it back at the
- * head of the LRU queue.
- */
- cm_AdjustScacheLRU(scp);
-
- /* and we're done */
- return scp;
- }
- osi_Log1(afsd_logp, "GetNewSCache recycled failed scp 0x%x", scp);
- } else if (!(scp->flags & CM_SCACHEFLAG_INHASH)) {
- /* we found an entry, so return it */
- /* now remove from the LRU queue and put it back at the
- * head of the LRU queue.
- */
- cm_AdjustScacheLRU(scp);
-
- /* and we're done */
- return scp;
- }
- }
- }
- osi_Log0(afsd_logp, "GetNewSCache no deleted or recycled entries available for reuse");
-#endif
-
+ lock_AssertWrite(&cm_scacheLock);
if (cm_data.currentSCaches >= cm_data.maxSCaches) {
/* There were no deleted scache objects that we could use. Try to find
* one that simply hasn't been used in a while.
*/
for ( scp = cm_data.scacheLRULastp;
scp;
- scp = (cm_scache_t *) osi_QPrev(&scp->q))
+ scp = (cm_scache_t *) osi_QPrev(&scp->q))
{
/* It is possible for the refCount to be zero and for there still
* to be outstanding dirty buffers. If there are dirty buffers,
* we must not recycle the scp. */
if (scp->refCount == 0 && scp->bufReadsp == NULL && scp->bufWritesp == NULL) {
if (!buf_DirtyBuffersExist(&scp->fid)) {
+ if (!lock_TryWrite(&scp->rw))
+ continue;
+
if (!cm_RecycleSCache(scp, 0)) {
/* we found an entry, so return it */
/* now remove from the LRU queue and put it back at the
/* and we're done */
return scp;
}
+ lock_ReleaseWrite(&scp->rw);
} else {
osi_Log1(afsd_logp,"GetNewSCache dirty buffers exist scp 0x%x", scp);
}
- }
+ }
}
osi_Log1(afsd_logp, "GetNewSCache all scache entries in use (retry = %d)", retry);
return NULL;
}
-
+
/* if we get here, we should allocate a new scache entry. We either are below
* quota or we have a leak and need to allocate a new one to avoid panicing.
*/
"invalid cm_scache_t address");
memset(scp, 0, sizeof(cm_scache_t));
scp->magic = CM_SCACHE_MAGIC;
- lock_InitializeMutex(&scp->mx, "cm_scache_t mutex");
- lock_InitializeRWLock(&scp->bufCreateLock, "cm_scache_t bufCreateLock");
+ lock_InitializeRWLock(&scp->rw, "cm_scache_t rw", LOCK_HIERARCHY_SCACHE);
+ osi_assertx(lock_TryWrite(&scp->rw), "cm_scache_t rw held after allocation");
+ lock_InitializeRWLock(&scp->bufCreateLock, "cm_scache_t bufCreateLock", LOCK_HIERARCHY_SCACHE_BUFCREATE);
#ifdef USE_BPLUS
- lock_InitializeRWLock(&scp->dirlock, "cm_scache_t dirlock");
+ lock_InitializeRWLock(&scp->dirlock, "cm_scache_t dirlock", LOCK_HIERARCHY_SCACHE_DIRLOCK);
#endif
scp->serverLock = -1;
/* and put it in the LRU queue */
osi_QAdd((osi_queue_t **) &cm_data.scacheLRUFirstp, &scp->q);
- if (!cm_data.scacheLRULastp)
+ if (!cm_data.scacheLRULastp)
cm_data.scacheLRULastp = scp;
cm_data.currentSCaches++;
cm_dnlcPurgedp(scp); /* make doubly sure that this is not in dnlc */
- cm_dnlcPurgevp(scp);
+ cm_dnlcPurgevp(scp);
scp->allNextp = cm_data.allSCachesp;
cm_data.allSCachesp = scp;
return scp;
-}
+}
+
+void cm_SetFid(cm_fid_t *fidp, afs_uint32 cell, afs_uint32 volume, afs_uint32 vnode, afs_uint32 unique)
+{
+ fidp->cell = cell;
+ fidp->volume = volume;
+ fidp->vnode = vnode;
+ fidp->unique = unique;
+ fidp->hash = ((cell & 0xF) << 28) | ((volume & 0x3F) << 22) | ((vnode & 0x7FF) << 11) | (unique & 0x7FF);
+}
/* like strcmp, only for fids */
-int cm_FidCmp(cm_fid_t *ap, cm_fid_t *bp)
+__inline int cm_FidCmp(cm_fid_t *ap, cm_fid_t *bp)
{
- if (ap->vnode != bp->vnode)
+ if (ap->hash != bp->hash)
return 1;
- if (ap->volume != bp->volume)
+ if (ap->vnode != bp->vnode)
return 1;
- if (ap->unique != bp->unique)
+ if (ap->volume != bp->volume)
return 1;
- if (ap->cell != bp->cell)
+ if (ap->unique != bp->unique)
+ return 1;
+ if (ap->cell != bp->cell)
return 1;
return 0;
}
{
if ( newFile ) {
memset(&cm_data.fakeSCache, 0, sizeof(cm_scache_t));
+ cm_data.fakeSCache.magic = CM_SCACHE_MAGIC;
cm_data.fakeSCache.cbServerp = (struct cm_server *)(-1);
+ cm_data.fakeSCache.cbExpires = (time_t)-1;
/* can leave clientModTime at 0 */
cm_data.fakeSCache.fileType = CM_SCACHETYPE_FILE;
cm_data.fakeSCache.unixModeBits = 0777;
cm_data.fakeSCache.length.LowPart = 1000;
cm_data.fakeSCache.linkCount = 1;
cm_data.fakeSCache.refCount = 1;
+ cm_data.fakeSCache.serverLock = -1;
+ cm_data.fakeSCache.dataVersion = CM_SCACHE_VERSION_BAD;
}
- lock_InitializeMutex(&cm_data.fakeSCache.mx, "cm_scache_t mutex");
+ lock_InitializeRWLock(&cm_data.fakeSCache.rw, "cm_scache_t rw", LOCK_HIERARCHY_SCACHE);
+ lock_InitializeRWLock(&cm_data.fakeSCache.bufCreateLock, "cm_scache_t bufCreateLock", LOCK_HIERARCHY_SCACHE_BUFCREATE);
+ lock_InitializeRWLock(&cm_data.fakeSCache.dirlock, "cm_scache_t dirlock", LOCK_HIERARCHY_SCACHE_DIRLOCK);
}
long
return -17;
}
- for ( scp = cm_data.scacheLRUFirstp, lscp = NULL, i = 0;
+ for ( scp = cm_data.scacheLRUFirstp, lscp = NULL, i = 0;
scp;
lscp = scp, scp = (cm_scache_t *) osi_QNext(&scp->q), i++ ) {
if (scp->magic != CM_SCACHE_MAGIC) {
fprintf(stderr, "cm_ValidateSCache failure: scp->randomACLp->magic != CM_ACLENT_MAGIC\n");
return -3;
}
- if (scp->volp && scp->volp->magic != CM_VOLUME_MAGIC) {
- afsi_log("cm_ValidateSCache failure: scp->volp->magic != CM_VOLUME_MAGIC");
- fprintf(stderr, "cm_ValidateSCache failure: scp->volp->magic != CM_VOLUME_MAGIC\n");
- return -4;
- }
if (i > cm_data.currentSCaches ) {
afsi_log("cm_ValidateSCache failure: LRU First queue loops");
fprintf(stderr, "cm_ValidateSCache failure: LUR First queue loops\n");
fprintf(stderr, "cm_ValidateSCache failure: scp->randomACLp->magic != CM_ACLENT_MAGIC\n");
return -7;
}
- if (scp->volp && scp->volp->magic != CM_VOLUME_MAGIC) {
- afsi_log("cm_ValidateSCache failure: scp->volp->magic != CM_VOLUME_MAGIC");
- fprintf(stderr, "cm_ValidateSCache failure: scp->volp->magic != CM_VOLUME_MAGIC\n");
- return -8;
- }
if (i > cm_data.currentSCaches ) {
afsi_log("cm_ValidateSCache failure: LRU Last queue loops");
fprintf(stderr, "cm_ValidateSCache failure: LUR Last queue loops\n");
for ( i=0; i < cm_data.scacheHashTableSize; i++ ) {
for ( scp = cm_data.scacheHashTablep[i]; scp; scp = scp->nextp ) {
+ afs_uint32 hash;
+ hash = CM_SCACHE_HASH(&scp->fid);
if (scp->magic != CM_SCACHE_MAGIC) {
afsi_log("cm_ValidateSCache failure: scp->magic != CM_SCACHE_MAGIC");
fprintf(stderr, "cm_ValidateSCache failure: scp->magic != CM_SCACHE_MAGIC\n");
fprintf(stderr, "cm_ValidateSCache failure: scp->randomACLp->magic != CM_ACLENT_MAGIC\n");
return -11;
}
- if (scp->volp && scp->volp->magic != CM_VOLUME_MAGIC) {
- afsi_log("cm_ValidateSCache failure: scp->volp->magic != CM_VOLUME_MAGIC");
- fprintf(stderr, "cm_ValidateSCache failure: scp->volp->magic != CM_VOLUME_MAGIC\n");
- return -12;
+ if (hash != i) {
+ afsi_log("cm_ValidateSCache failure: scp hash != hash index");
+ fprintf(stderr, "cm_ValidateSCache failure: scp hash != hash index\n");
+ return -13;
}
}
}
cm_scache_t * scp;
time_t now;
- cm_GiveUpAllCallbacksAllServers(TRUE);
+ cm_GiveUpAllCallbacksAllServersMulti(TRUE);
- /*
+ /*
* After this call all servers are marked down.
* Do not clear the callbacks, instead change the
* expiration time so that the callbacks will be expired
* when the servers are marked back up. However, we
- * want the callbacks to be preserved as long as the
+ * want the callbacks to be preserved as long as the
* servers are down. That way if the machine resumes
* without network, the stat cache item will still be
* considered valid.
*/
- now = osi_Time();
+ now = time(NULL);
lock_ObtainWrite(&cm_scacheLock);
for ( scp = cm_data.allSCachesp; scp; scp = scp->allNextp ) {
if (scp->cbServerp) {
- if (scp->flags & CM_SCACHEFLAG_PURERO && scp->volp) {
- if (scp->volp->cbExpiresRO == scp->cbExpires) {
- scp->volp->cbExpiresRO = now+1;
+ if (scp->flags & CM_SCACHEFLAG_PURERO) {
+ cm_volume_t *volp = cm_GetVolumeByFID(&scp->fid);
+ if (volp) {
+ if (volp->cbExpiresRO == scp->cbExpires)
+ volp->cbExpiresRO = now+1;
+ cm_PutVolume(volp);
}
}
scp->cbExpires = now+1;
long
cm_ShutdownSCache(void)
{
- cm_scache_t * scp;
+ cm_scache_t * scp, * nextp;
+
+ cm_GiveUpAllCallbacksAllServersMulti(FALSE);
lock_ObtainWrite(&cm_scacheLock);
for ( scp = cm_data.allSCachesp; scp;
- scp = scp->allNextp ) {
+ scp = nextp ) {
+ nextp = scp->allNextp;
+ lock_ReleaseWrite(&cm_scacheLock);
+#ifdef USE_BPLUS
+ lock_ObtainWrite(&scp->dirlock);
+#endif
+ lock_ObtainWrite(&scp->rw);
+ lock_ObtainWrite(&cm_scacheLock);
+
if (scp->randomACLp) {
- lock_ObtainMutex(&scp->mx);
cm_FreeAllACLEnts(scp);
- lock_ReleaseMutex(&scp->mx);
}
if (scp->cbServerp) {
scp->cbServerp = NULL;
}
scp->cbExpires = 0;
- scp->flags &= ~CM_SCACHEFLAG_CALLBACK;
+ _InterlockedAnd(&scp->flags, ~CM_SCACHEFLAG_CALLBACK);
+ lock_ReleaseWrite(&scp->rw);
#ifdef USE_BPLUS
if (scp->dirBplus)
freeBtree(scp->dirBplus);
scp->dirBplus = NULL;
- scp->dirDataVersion = -1;
+ scp->dirDataVersion = CM_SCACHE_VERSION_BAD;
+ lock_ReleaseWrite(&scp->dirlock);
lock_FinalizeRWLock(&scp->dirlock);
#endif
- lock_FinalizeMutex(&scp->mx);
+ lock_FinalizeRWLock(&scp->rw);
lock_FinalizeRWLock(&scp->bufCreateLock);
}
lock_ReleaseWrite(&cm_scacheLock);
- cm_GiveUpAllCallbacksAllServers(FALSE);
-
return cm_dnlcShutdown();
}
void cm_InitSCache(int newFile, long maxSCaches)
{
static osi_once_t once;
-
+
if (osi_Once(&once)) {
- lock_InitializeRWLock(&cm_scacheLock, "cm_scacheLock");
+ lock_InitializeRWLock(&cm_scacheLock, "cm_scacheLock", LOCK_HIERARCHY_SCACHE_GLOBAL);
if ( newFile ) {
memset(cm_data.scacheHashTablep, 0, sizeof(cm_scache_t *) * cm_data.scacheHashTableSize);
cm_data.allSCachesp = NULL;
for ( scp = cm_data.allSCachesp; scp;
scp = scp->allNextp ) {
- lock_InitializeMutex(&scp->mx, "cm_scache_t mutex");
- lock_InitializeRWLock(&scp->bufCreateLock, "cm_scache_t bufCreateLock");
+ lock_InitializeRWLock(&scp->rw, "cm_scache_t rw", LOCK_HIERARCHY_SCACHE);
+ lock_InitializeRWLock(&scp->bufCreateLock, "cm_scache_t bufCreateLock", LOCK_HIERARCHY_SCACHE_BUFCREATE);
#ifdef USE_BPLUS
- lock_InitializeRWLock(&scp->dirlock, "cm_scache_t dirlock");
+ lock_InitializeRWLock(&scp->dirlock, "cm_scache_t dirlock", LOCK_HIERARCHY_SCACHE_DIRLOCK);
#endif
scp->cbServerp = NULL;
scp->cbExpires = 0;
+ scp->volumeCreationDate = 0;
scp->fileLocksH = NULL;
scp->fileLocksT = NULL;
scp->serverLock = (-1);
scp->waitCount = 0;
#ifdef USE_BPLUS
scp->dirBplus = NULL;
- scp->dirDataVersion = -1;
+ scp->dirDataVersion = CM_SCACHE_VERSION_BAD;
#endif
scp->waitQueueT = NULL;
- scp->flags &= ~CM_SCACHEFLAG_WAITING;
+ _InterlockedAnd(&scp->flags, ~CM_SCACHEFLAG_WAITING);
}
}
cm_allFileLocks = NULL;
return NULL;
}
- lock_ObtainWrite(&cm_scacheLock);
+ lock_ObtainRead(&cm_scacheLock);
for (scp=cm_data.scacheHashTablep[hash]; scp; scp=scp->nextp) {
if (cm_FidCmp(fidp, &scp->fid) == 0) {
cm_HoldSCacheNoLock(scp);
+ lock_ConvertRToW(&cm_scacheLock);
cm_AdjustScacheLRU(scp);
lock_ReleaseWrite(&cm_scacheLock);
return scp;
}
}
- lock_ReleaseWrite(&cm_scacheLock);
+ lock_ReleaseRead(&cm_scacheLock);
return NULL;
}
#endif
{
long hash;
- cm_scache_t *scp;
+ cm_scache_t *scp = NULL;
long code;
cm_volume_t *volp = NULL;
cm_cell_t *cellp;
- char* mp = NULL;
- int special; // yj: boolean variable to test if file is on root.afs
- int isRoot;
+ int special = 0; // yj: boolean variable to test if file is on root.afs
+ int isRoot = 0;
extern cm_fid_t cm_rootFid;
-
+
hash = CM_SCACHE_HASH(fidp);
-
- osi_assertx(fidp->cell != 0, "unassigned cell value");
- if (fidp->cell== cm_data.rootFid.cell &&
- fidp->volume==cm_data.rootFid.volume &&
- fidp->vnode==0x0 && fidp->unique==0x0)
- {
- osi_Log0(afsd_logp,"cm_GetSCache called with root cell/volume and vnode=0 and unique=0");
- }
+ if (fidp->cell == 0)
+ return CM_ERROR_INVAL;
+
+#ifdef AFS_FREELANCE_CLIENT
+ special = (fidp->cell==AFS_FAKE_ROOT_CELL_ID &&
+ fidp->volume==AFS_FAKE_ROOT_VOL_ID &&
+ !(fidp->vnode==0x1 && fidp->unique==0x1));
+ isRoot = (fidp->cell==AFS_FAKE_ROOT_CELL_ID &&
+ fidp->volume==AFS_FAKE_ROOT_VOL_ID &&
+ fidp->vnode==0x1 && fidp->unique==0x1);
+#endif
// yj: check if we have the scp, if so, we don't need
// to do anything else
for (scp=cm_data.scacheHashTablep[hash]; scp; scp=scp->nextp) {
if (cm_FidCmp(fidp, &scp->fid) == 0) {
#ifdef DEBUG_REFCOUNT
- afsi_log("%s:%d cm_GetSCache (1) outScpp 0x%p ref %d", file, line, scp, scp->refCount);
- osi_Log1(afsd_logp,"cm_GetSCache (1) outScpp 0x%p", scp);
+ afsi_log("%s:%d cm_GetSCache (1) scp 0x%p ref %d", file, line, scp, scp->refCount);
+ osi_Log1(afsd_logp,"cm_GetSCache (1) scp 0x%p", scp);
+#endif
+#ifdef AFS_FREELANCE_CLIENT
+ if (cm_freelanceEnabled && special &&
+ cm_data.fakeDirVersion != scp->dataVersion)
+ break;
#endif
cm_HoldSCacheNoLock(scp);
*outScpp = scp;
// because we have to fill in the status stuff 'coz we
// don't want trybulkstat to fill it in for us
#ifdef AFS_FREELANCE_CLIENT
- special = (fidp->cell==AFS_FAKE_ROOT_CELL_ID &&
- fidp->volume==AFS_FAKE_ROOT_VOL_ID &&
- !(fidp->vnode==0x1 && fidp->unique==0x1));
- isRoot = (fidp->cell==AFS_FAKE_ROOT_CELL_ID &&
- fidp->volume==AFS_FAKE_ROOT_VOL_ID &&
- fidp->vnode==0x1 && fidp->unique==0x1);
if (cm_freelanceEnabled && isRoot) {
osi_Log0(afsd_logp,"cm_GetSCache Freelance and isRoot");
/* freelance: if we are trying to get the root scp for the first
- * time, we will just put in a place holder entry.
+ * time, we will just put in a place holder entry.
*/
volp = NULL;
}
-
+
if (cm_freelanceEnabled && special) {
+ lock_ReleaseWrite(&cm_scacheLock);
osi_Log0(afsd_logp,"cm_GetSCache Freelance and special");
- if (fidp->vnode > 1 && fidp->vnode <= cm_noLocalMountPoints + 2) {
- lock_ObtainMutex(&cm_Freelance_Lock);
- mp =(cm_localMountPoints+fidp->vnode-2)->mountPointStringp;
- lock_ReleaseMutex(&cm_Freelance_Lock);
- } else {
- mp = "";
+
+ if (cm_getLocalMountPointChange()) {
+ cm_clearLocalMountPointChange();
+ cm_reInitLocalMountPoints();
}
- scp = cm_GetNewSCache();
- if (scp == NULL) {
- osi_Log0(afsd_logp,"cm_GetSCache unable to obtain *new* scache entry");
- lock_ReleaseWrite(&cm_scacheLock);
- return CM_ERROR_WOULDBLOCK;
- }
-#if not_too_dangerous
- /* dropping the cm_scacheLock allows more than one thread
- * to obtain the same cm_scache_t from the LRU list. Since
- * the refCount is known to be zero at this point we have to
- * assume that no one else is using the one this is returned.
- */
- lock_ReleaseWrite(&cm_scacheLock);
- lock_ObtainMutex(&scp->mx);
- lock_ObtainWrite(&cm_scacheLock);
-#endif
+ lock_ObtainWrite(&cm_scacheLock);
+ if (scp == NULL) {
+ scp = cm_GetNewSCache(); /* returns scp->rw held */
+ if (scp == NULL) {
+ osi_Log0(afsd_logp,"cm_GetSCache unable to obtain *new* scache entry");
+ lock_ReleaseWrite(&cm_scacheLock);
+ return CM_ERROR_WOULDBLOCK;
+ }
+ } else {
+ lock_ReleaseWrite(&cm_scacheLock);
+ lock_ObtainWrite(&scp->rw);
+ lock_ObtainWrite(&cm_scacheLock);
+ }
scp->fid = *fidp;
- scp->volp = cm_data.rootSCachep->volp;
- cm_GetVolume(scp->volp); /* grab an additional reference */
scp->dotdotFid.cell=AFS_FAKE_ROOT_CELL_ID;
scp->dotdotFid.volume=AFS_FAKE_ROOT_VOL_ID;
scp->dotdotFid.unique=1;
scp->dotdotFid.vnode=1;
- scp->flags |= (CM_SCACHEFLAG_PURERO | CM_SCACHEFLAG_RO);
- scp->nextp=cm_data.scacheHashTablep[hash];
- cm_data.scacheHashTablep[hash]=scp;
- scp->flags |= CM_SCACHEFLAG_INHASH;
+ _InterlockedOr(&scp->flags, (CM_SCACHEFLAG_PURERO | CM_SCACHEFLAG_RO));
+ if (!(scp->flags & CM_SCACHEFLAG_INHASH)) {
+ scp->nextp = cm_data.scacheHashTablep[hash];
+ cm_data.scacheHashTablep[hash] = scp;
+ _InterlockedOr(&scp->flags, CM_SCACHEFLAG_INHASH);
+ }
scp->refCount = 1;
- osi_Log1(afsd_logp,"cm_GetSCache (freelance) sets refCount to 1 scp 0x%x", scp);
- if (fidp->vnode > 1 && fidp->vnode <= cm_noLocalMountPoints + 2)
- scp->fileType = (cm_localMountPoints+fidp->vnode-2)->fileType;
- else
- scp->fileType = CM_SCACHETYPE_INVALID;
-
- lock_ObtainMutex(&cm_Freelance_Lock);
- scp->length.LowPart = (DWORD)strlen(mp)+4;
- scp->length.HighPart = 0;
- strncpy(scp->mountPointStringp,mp,MOUNTPOINTLEN);
- scp->mountPointStringp[MOUNTPOINTLEN-1] = '\0';
- lock_ReleaseMutex(&cm_Freelance_Lock);
+ osi_Log1(afsd_logp,"cm_GetSCache (freelance) sets refCount to 1 scp 0x%p", scp);
+
+ /* must be called after the scp->fid is set */
+ cm_FreelanceFetchMountPointString(scp);
+ cm_FreelanceFetchFileType(scp);
+ scp->length.LowPart = (DWORD)strlen(scp->mountPointStringp)+4;
+ scp->length.HighPart = 0;
scp->owner=0x0;
scp->unixModeBits=0777;
scp->clientModTime=FakeFreelanceModTime;
scp->parentVnode=0x1;
scp->group=0;
scp->dataVersion=cm_data.fakeDirVersion;
- scp->lockDataVersion=-1; /* no lock yet */
-#if not_too_dangerous
- lock_ReleaseMutex(&scp->mx);
-#endif
- *outScpp = scp;
+ scp->bufDataVersionLow=cm_data.fakeDirVersion;
+ scp->lockDataVersion=CM_SCACHE_VERSION_BAD; /* no lock yet */
+ scp->fsLockCount=0;
+ lock_ReleaseWrite(&scp->rw);
lock_ReleaseWrite(&cm_scacheLock);
+ *outScpp = scp;
#ifdef DEBUG_REFCOUNT
- afsi_log("%s:%d cm_GetSCache (2) outScpp 0x%p ref %d", file, line, scp, scp->refCount);
- osi_Log1(afsd_logp,"cm_GetSCache (2) outScpp 0x%p", scp);
+ afsi_log("%s:%d cm_GetSCache (2) scp 0x%p ref %d", file, line, scp, scp->refCount);
+ osi_Log1(afsd_logp,"cm_GetSCache (2) scp 0x%p", scp);
#endif
return 0;
}
/* otherwise, we need to find the volume */
if (!cm_freelanceEnabled || !isRoot) {
lock_ReleaseWrite(&cm_scacheLock); /* for perf. reasons */
- cellp = cm_FindCellByID(fidp->cell);
- if (!cellp)
+ cellp = cm_FindCellByID(fidp->cell, 0);
+ if (!cellp)
return CM_ERROR_NOSUCHCELL;
- code = cm_GetVolumeByID(cellp, fidp->volume, userp, reqp, CM_GETVOL_FLAG_CREATE, &volp);
- if (code)
+ code = cm_FindVolumeByID(cellp, fidp->volume, userp, reqp, CM_GETVOL_FLAG_CREATE, &volp);
+ if (code)
return code;
lock_ObtainWrite(&cm_scacheLock);
}
-
+
/* otherwise, we have the volume, now reverify that the scp doesn't
* exist, and proceed.
*/
for (scp=cm_data.scacheHashTablep[hash]; scp; scp=scp->nextp) {
if (cm_FidCmp(fidp, &scp->fid) == 0) {
#ifdef DEBUG_REFCOUNT
- afsi_log("%s:%d cm_GetSCache (3) outScpp 0x%p ref %d", file, line, scp, scp->refCount);
- osi_Log1(afsd_logp,"cm_GetSCache (3) outScpp 0x%p", scp);
+ afsi_log("%s:%d cm_GetSCache (3) scp 0x%p ref %d", file, line, scp, scp->refCount);
+ osi_Log1(afsd_logp,"cm_GetSCache (3) scp 0x%p", scp);
#endif
cm_HoldSCacheNoLock(scp);
- osi_assertx(scp->volp == volp, "cm_scache_t volume has unexpected value");
cm_AdjustScacheLRU(scp);
lock_ReleaseWrite(&cm_scacheLock);
if (volp)
return 0;
}
}
-
+
/* now, if we don't have the fid, recycle something */
- scp = cm_GetNewSCache();
+ scp = cm_GetNewSCache(); /* returns scp->rw held */
if (scp == NULL) {
osi_Log0(afsd_logp,"cm_GetNewSCache unable to obtain *new* scache entry");
lock_ReleaseWrite(&cm_scacheLock);
cm_PutVolume(volp);
return CM_ERROR_WOULDBLOCK;
}
- osi_Log2(afsd_logp,"cm_GetNewSCache returns scp 0x%x flags 0x%x", scp, scp->flags);
+#ifdef DEBUG_REFCOUNT
+ afsi_log("%s:%d cm_GetNewSCache returns scp 0x%p flags 0x%x", file, line, scp, scp->flags);
+#endif
+ osi_Log2(afsd_logp,"cm_GetNewSCache returns scp 0x%p flags 0x%x", scp, scp->flags);
osi_assertx(!(scp->flags & CM_SCACHEFLAG_INHASH), "CM_SCACHEFLAG_INHASH set");
-#if not_too_dangerous
- /* dropping the cm_scacheLock allows more than one thread
- * to obtain the same cm_scache_t from the LRU list. Since
- * the refCount is known to be zero at this point we have to
- * assume that no one else is using the one this is returned.
- */
- lock_ReleaseWrite(&cm_scacheLock);
- lock_ObtainMutex(&scp->mx);
- lock_ObtainWrite(&cm_scacheLock);
-#endif
scp->fid = *fidp;
- scp->volp = volp; /* a held reference */
-
if (!cm_freelanceEnabled || !isRoot) {
- /* if this scache entry represents a volume root then we need
- * to copy the dotdotFipd from the volume structure where the
+ /* if this scache entry represents a volume root then we need
+ * to copy the dotdotFipd from the volume structure where the
* "master" copy is stored (defect 11489)
*/
- if (scp->fid.vnode == 1 && scp->fid.unique == 1) {
- scp->dotdotFid = volp->dotdotFid;
+ if (volp->vol[ROVOL].ID == fidp->volume) {
+ _InterlockedOr(&scp->flags, (CM_SCACHEFLAG_PURERO | CM_SCACHEFLAG_RO));
+ if (scp->fid.vnode == 1 && scp->fid.unique == 1)
+ scp->dotdotFid = cm_VolumeStateByType(volp, ROVOL)->dotdotFid;
+ } else if (volp->vol[BACKVOL].ID == fidp->volume) {
+ _InterlockedOr(&scp->flags, CM_SCACHEFLAG_RO);
+ if (scp->fid.vnode == 1 && scp->fid.unique == 1)
+ scp->dotdotFid = cm_VolumeStateByType(volp, BACKVOL)->dotdotFid;
+ } else {
+ if (scp->fid.vnode == 1 && scp->fid.unique == 1)
+ scp->dotdotFid = cm_VolumeStateByType(volp, RWVOL)->dotdotFid;
}
-
- if (volp->ro.ID == fidp->volume)
- scp->flags |= (CM_SCACHEFLAG_PURERO | CM_SCACHEFLAG_RO);
- else if (volp->bk.ID == fidp->volume)
- scp->flags |= CM_SCACHEFLAG_RO;
}
+ if (volp)
+ cm_PutVolume(volp);
scp->nextp = cm_data.scacheHashTablep[hash];
cm_data.scacheHashTablep[hash] = scp;
- scp->flags |= CM_SCACHEFLAG_INHASH;
+ _InterlockedOr(&scp->flags, CM_SCACHEFLAG_INHASH);
+ lock_ReleaseWrite(&scp->rw);
scp->refCount = 1;
- osi_Log1(afsd_logp,"cm_GetSCache sets refCount to 1 scp 0x%x", scp);
-#if not_too_dangerous
- lock_ReleaseMutex(&scp->mx);
+#ifdef DEBUG_REFCOUNT
+ afsi_log("%s:%d cm_GetSCache sets refCount to 1 scp 0x%p", file, line, scp);
#endif
+ osi_Log1(afsd_logp,"cm_GetSCache sets refCount to 1 scp 0x%p", scp);
- /* XXX - The following fields in the cm_scache are
+ /* XXX - The following fields in the cm_scache are
* uninitialized:
* fileType
* parentVnode
* parentUnique
*/
- lock_ReleaseWrite(&cm_scacheLock);
-
+
/* now we have a held scache entry; just return it */
*outScpp = scp;
#ifdef DEBUG_REFCOUNT
- afsi_log("%s:%d cm_GetSCache (4) outScpp 0x%p ref %d", file, line, scp, scp->refCount);
- osi_Log1(afsd_logp,"cm_GetSCache (4) outScpp 0x%p", scp);
+ afsi_log("%s:%d cm_GetSCache (4) scp 0x%p ref %d", file, line, scp, scp->refCount);
+ osi_Log1(afsd_logp,"cm_GetSCache (4) scp 0x%p", scp);
#endif
+ lock_ReleaseWrite(&cm_scacheLock);
return 0;
}
-/* Returns a held reference to the scache's parent
+/* Returns a held reference to the scache's parent
* if it exists */
cm_scache_t * cm_FindSCacheParent(cm_scache_t * scp)
{
cm_fid_t parent_fid;
cm_scache_t * pscp = NULL;
- lock_ObtainRead(&cm_scacheLock);
- parent_fid = scp->fid;
- parent_fid.vnode = scp->parentVnode;
- parent_fid.unique = scp->parentUnique;
+ lock_ObtainWrite(&cm_scacheLock);
+ cm_SetFid(&parent_fid, scp->fid.cell, scp->fid.volume, scp->parentVnode, scp->parentUnique);
if (cm_FidCmp(&scp->fid, &parent_fid)) {
i = CM_SCACHE_HASH(&parent_fid);
}
}
- lock_ReleaseRead(&cm_scacheLock);
+ lock_ReleaseWrite(&cm_scacheLock);
return pscp;
}
/* synchronize a fetch, store, read, write, fetch status or store status.
* Called with scache mutex held, and returns with it held, but temporarily
* drops it during the fetch.
- *
+ *
* At most one flag can be on in flags, if this is an RPC request.
*
* Also, if we're fetching or storing data, we must ensure that we have a buffer.
afs_uint32 sleep_scp_bufs = 0;
int wakeupCycle;
+ lock_AssertWrite(&scp->rw);
+
/* lookup this first */
bufLocked = flags & CM_SCACHESYNC_BUFLOCKED;
* operation ran first, or even which order a read and
* a write occurred in.
*/
- if (scp->flags & (CM_SCACHEFLAG_FETCHING | CM_SCACHEFLAG_STORING
- | CM_SCACHEFLAG_SIZESTORING | CM_SCACHEFLAG_GETCALLBACK)) {
- osi_Log1(afsd_logp, "CM SyncOp scp 0x%p is FETCHING|STORING|SIZESTORING|GETCALLBACK want FETCHSTATUS", scp);
+ if (scp->flags & (CM_SCACHEFLAG_FETCHING | CM_SCACHEFLAG_STORING | CM_SCACHEFLAG_SIZESETTING |
+ CM_SCACHEFLAG_SIZESTORING | CM_SCACHEFLAG_GETCALLBACK)) {
+ osi_Log1(afsd_logp, "CM SyncOp scp 0x%p is FETCHING|STORING|SIZESETTING|SIZESTORING|GETCALLBACK want FETCHSTATUS", scp);
goto sleep;
}
}
/* if we're going to make an RPC to change the status, make sure
* that no one is bringing in or sending out the status.
*/
- if (scp->flags & (CM_SCACHEFLAG_FETCHING | CM_SCACHEFLAG_STORING |
+ if (scp->flags & (CM_SCACHEFLAG_FETCHING | CM_SCACHEFLAG_STORING | CM_SCACHEFLAG_SIZESETTING |
CM_SCACHEFLAG_SIZESTORING | CM_SCACHEFLAG_GETCALLBACK)) {
- osi_Log1(afsd_logp, "CM SyncOp scp 0x%p is FETCHING|STORING|SIZESTORING|GETCALLBACK want STORESIZE|STORESTATUS|SETSIZE|GETCALLBACK", scp);
+ osi_Log1(afsd_logp, "CM SyncOp scp 0x%p is FETCHING|STORING|SIZESETTING|SIZESTORING|GETCALLBACK want STORESIZE|STORESTATUS|SETSIZE|GETCALLBACK", scp);
goto sleep;
}
- if (scp->bufReadsp || scp->bufWritesp) {
+ if ((!bufp || bufp && scp->fileType == CM_SCACHETYPE_FILE) &&
+ (scp->bufReadsp || scp->bufWritesp)) {
osi_Log1(afsd_logp, "CM SyncOp scp 0x%p is bufRead|bufWrite want STORESIZE|STORESTATUS|SETSIZE|GETCALLBACK", scp);
goto sleep;
}
* nothing is happening to that chunk, and that we aren't
* changing the basic file status info, either.
*/
- if (scp->flags & (CM_SCACHEFLAG_FETCHING | CM_SCACHEFLAG_STORING
- | CM_SCACHEFLAG_SIZESTORING | CM_SCACHEFLAG_GETCALLBACK)) {
- osi_Log1(afsd_logp, "CM SyncOp scp 0x%p is FETCHING|STORING|SIZESTORING|GETCALLBACK want FETCHDATA", scp);
+ if (scp->flags & (CM_SCACHEFLAG_FETCHING | CM_SCACHEFLAG_STORING | CM_SCACHEFLAG_SIZESETTING |
+ CM_SCACHEFLAG_SIZESTORING | CM_SCACHEFLAG_GETCALLBACK)) {
+ osi_Log1(afsd_logp, "CM SyncOp scp 0x%p is FETCHING|STORING|SIZESETTING|SIZESTORING|GETCALLBACK want FETCHDATA", scp);
goto sleep;
}
if (bufp && (bufp->cmFlags & (CM_BUF_CMFETCHING | CM_BUF_CMSTORING | CM_BUF_CMWRITING))) {
* operations don't change any of the data that we're
* changing here.
*/
- if (scp->flags & (CM_SCACHEFLAG_FETCHING | CM_SCACHEFLAG_STORING | CM_SCACHEFLAG_SIZESTORING)) {
- osi_Log1(afsd_logp, "CM SyncOp scp 0x%p is FETCHING|STORING|SIZESTORING want SETSTATUS", scp);
+ if (scp->flags & (CM_SCACHEFLAG_FETCHING | CM_SCACHEFLAG_STORING |
+ CM_SCACHEFLAG_SIZESETTING | CM_SCACHEFLAG_SIZESTORING)) {
+ osi_Log1(afsd_logp, "CM SyncOp scp 0x%p is FETCHING|STORING|SIZESETTING|SIZESTORING want SETSTATUS", scp);
goto sleep;
}
}
/* don't write unless the status is stable and the chunk
* is stable.
*/
- if (scp->flags & (CM_SCACHEFLAG_FETCHING | CM_SCACHEFLAG_STORING
- | CM_SCACHEFLAG_SIZESTORING)) {
- osi_Log1(afsd_logp, "CM SyncOp scp 0x%p is FETCHING|STORING|SIZESTORING want WRITE", scp);
+ if (scp->flags & (CM_SCACHEFLAG_FETCHING | CM_SCACHEFLAG_STORING | CM_SCACHEFLAG_SIZESETTING |
+ CM_SCACHEFLAG_SIZESTORING)) {
+ osi_Log1(afsd_logp, "CM SyncOp scp 0x%p is FETCHING|STORING|SIZESETTING|SIZESTORING want WRITE", scp);
goto sleep;
}
if (bufp && (bufp->cmFlags & (CM_BUF_CMFETCHING |
}
}
- // yj: modified this so that callback only checked if we're
- // not checking something on /afs
- /* fix the conditional to match the one in cm_HaveCallback */
- if ((flags & CM_SCACHESYNC_NEEDCALLBACK)
-#ifdef AFS_FREELANCE_CLIENT
- && (!cm_freelanceEnabled ||
- !(scp->fid.vnode==0x1 && scp->fid.unique==0x1) ||
- scp->fid.cell!=AFS_FAKE_ROOT_CELL_ID ||
- scp->fid.volume!=AFS_FAKE_ROOT_VOL_ID ||
- cm_fakeDirCallback < 2)
-#endif /* AFS_FREELANCE_CLIENT */
- ) {
+ if ((flags & CM_SCACHESYNC_NEEDCALLBACK)) {
if ((flags & CM_SCACHESYNC_FORCECB) || !cm_HaveCallback(scp)) {
osi_Log1(afsd_logp, "CM SyncOp getting callback on scp 0x%p",
scp);
- if (bufLocked)
+ if (bufLocked)
lock_ReleaseMutex(&bufp->mx);
code = cm_GetCallback(scp, userp, reqp, (flags & CM_SCACHESYNC_FORCECB)?1:0);
if (bufLocked) {
- lock_ReleaseMutex(&scp->mx);
+ lock_ReleaseWrite(&scp->rw);
lock_ObtainMutex(&bufp->mx);
- lock_ObtainMutex(&scp->mx);
+ lock_ObtainWrite(&scp->rw);
}
- if (code)
+ if (code)
return code;
flags &= ~CM_SCACHESYNC_FORCECB; /* only force once */
continue;
/* can't check access rights without a callback */
osi_assertx(flags & CM_SCACHESYNC_NEEDCALLBACK, "!CM_SCACHESYNC_NEEDCALLBACK");
- if ((rights & PRSFS_WRITE) && (scp->flags & CM_SCACHEFLAG_RO))
+ if ((rights & (PRSFS_WRITE|PRSFS_DELETE)) && (scp->flags & CM_SCACHEFLAG_RO))
return CM_ERROR_READONLY;
- if (cm_HaveAccessRights(scp, userp, rights, &outRights)) {
- if (~outRights & rights)
+ if (cm_HaveAccessRights(scp, userp, reqp, rights, &outRights)) {
+ if (~outRights & rights)
return CM_ERROR_NOACCESS;
}
else {
if (bufLocked) lock_ReleaseMutex(&bufp->mx);
code = cm_GetAccessRights(scp, userp, reqp);
if (bufLocked) {
- lock_ReleaseMutex(&scp->mx);
+ lock_ReleaseWrite(&scp->rw);
lock_ObtainMutex(&bufp->mx);
- lock_ObtainMutex(&scp->mx);
+ lock_ObtainWrite(&scp->rw);
}
- if (code)
+ if (code)
return code;
continue;
}
break;
sleep:
- /* first check if we're not supposed to wait: fail
+ /* first check if we're not supposed to wait: fail
* in this case, returning with everything still locked.
*/
- if (flags & CM_SCACHESYNC_NOWAIT)
+ if (flags & CM_SCACHESYNC_NOWAIT)
return CM_ERROR_WOULDBLOCK;
/* These are used for minidump debugging */
if ( scp->flags & CM_SCACHEFLAG_WAITING ) {
scp->waitCount++;
scp->waitRequests++;
- osi_Log3(afsd_logp, "CM SyncOp CM_SCACHEFLAG_WAITING already set for 0x%p; %d threads; %d requests",
+ osi_Log3(afsd_logp, "CM SyncOp CM_SCACHEFLAG_WAITING already set for 0x%p; %d threads; %d requests",
scp, scp->waitCount, scp->waitRequests);
} else {
osi_Log1(afsd_logp, "CM SyncOp CM_SCACHEFLAG_WAITING set for 0x%p", scp);
- scp->flags |= CM_SCACHEFLAG_WAITING;
+ _InterlockedOr(&scp->flags, CM_SCACHEFLAG_WAITING);
scp->waitCount = scp->waitRequests = 1;
}
- if (bufLocked)
- lock_ReleaseMutex(&bufp->mx);
-
cm_SyncOpAddToWaitQueue(scp, flags, bufp);
wakeupCycle = 0;
do {
- if (wakeupCycle++ != 0)
- lock_ObtainMutex(&scp->mx);
- osi_SleepM((LONG_PTR) &scp->flags, &scp->mx);
+ if (bufLocked)
+ lock_ReleaseMutex(&bufp->mx);
+ osi_SleepW((LONG_PTR) &scp->flags, &scp->rw);
+ if (bufLocked)
+ lock_ObtainMutex(&bufp->mx);
+ lock_ObtainWrite(&scp->rw);
} while (!cm_SyncOpCheckContinue(scp, flags, bufp));
- smb_UpdateServerPriority();
+ cm_UpdateServerPriority();
- if (bufLocked)
- lock_ObtainMutex(&bufp->mx);
- lock_ObtainMutex(&scp->mx);
scp->waitCount--;
- osi_Log3(afsd_logp, "CM SyncOp woke! scp 0x%p; still waiting %d threads of %d requests",
+ osi_Log3(afsd_logp, "CM SyncOp woke! scp 0x%p; still waiting %d threads of %d requests",
scp, scp->waitCount, scp->waitRequests);
if (scp->waitCount == 0) {
osi_Log1(afsd_logp, "CM SyncOp CM_SCACHEFLAG_WAITING reset for 0x%p", scp);
- scp->flags &= ~CM_SCACHEFLAG_WAITING;
+ _InterlockedAnd(&scp->flags, ~CM_SCACHEFLAG_WAITING);
scp->waitRequests = 0;
}
} /* big while loop */
-
+
/* now, update the recorded state for RPC-type calls */
if (flags & CM_SCACHESYNC_FETCHSTATUS)
- scp->flags |= CM_SCACHEFLAG_FETCHING;
+ _InterlockedOr(&scp->flags, CM_SCACHEFLAG_FETCHING);
if (flags & CM_SCACHESYNC_STORESTATUS)
- scp->flags |= CM_SCACHEFLAG_STORING;
+ _InterlockedOr(&scp->flags, CM_SCACHEFLAG_STORING);
+ if (flags & CM_SCACHESYNC_SETSIZE)
+ _InterlockedOr(&scp->flags, CM_SCACHEFLAG_SIZESETTING);
if (flags & CM_SCACHESYNC_STORESIZE)
- scp->flags |= CM_SCACHEFLAG_SIZESTORING;
+ _InterlockedOr(&scp->flags, CM_SCACHEFLAG_SIZESTORING);
if (flags & CM_SCACHESYNC_GETCALLBACK)
- scp->flags |= CM_SCACHEFLAG_GETCALLBACK;
+ _InterlockedOr(&scp->flags, CM_SCACHEFLAG_GETCALLBACK);
if (flags & CM_SCACHESYNC_STOREDATA_EXCL)
- scp->flags |= CM_SCACHEFLAG_DATASTORING;
+ _InterlockedOr(&scp->flags, CM_SCACHEFLAG_DATASTORING);
if (flags & CM_SCACHESYNC_ASYNCSTORE)
- scp->flags |= CM_SCACHEFLAG_ASYNCSTORING;
+ _InterlockedOr(&scp->flags, CM_SCACHEFLAG_ASYNCSTORING);
if (flags & CM_SCACHESYNC_LOCK)
- scp->flags |= CM_SCACHEFLAG_LOCKING;
+ _InterlockedOr(&scp->flags, CM_SCACHEFLAG_LOCKING);
/* now update the buffer pointer */
- if (flags & CM_SCACHESYNC_FETCHDATA) {
+ if (bufp && (flags & CM_SCACHESYNC_FETCHDATA)) {
/* ensure that the buffer isn't already in the I/O list */
- if (bufp) {
- for(qdp = scp->bufReadsp; qdp; qdp = (osi_queueData_t *) osi_QNext(&qdp->q)) {
- tbufp = osi_GetQData(qdp);
- osi_assertx(tbufp != bufp, "unexpected cm_buf_t value");
- }
+ for (qdp = scp->bufReadsp; qdp; qdp = (osi_queueData_t *) osi_QNext(&qdp->q)) {
+ tbufp = osi_GetQData(qdp);
+ osi_assertx(tbufp != bufp, "unexpected cm_buf_t value");
}
/* queue a held reference to the buffer in the "reading" I/O list */
qdp = osi_QDAlloc();
osi_SetQData(qdp, bufp);
- if (bufp) {
- buf_Hold(bufp);
- bufp->cmFlags |= CM_BUF_CMFETCHING;
- }
+
+ buf_Hold(bufp);
+ _InterlockedOr(&bufp->cmFlags, CM_BUF_CMFETCHING);
osi_QAdd((osi_queue_t **) &scp->bufReadsp, &qdp->q);
}
- if (flags & CM_SCACHESYNC_STOREDATA) {
+ if (bufp && (flags & CM_SCACHESYNC_STOREDATA)) {
+ osi_assertx(scp->fileType == CM_SCACHETYPE_FILE,
+ "attempting to store extents on a non-file object");
+
/* ensure that the buffer isn't already in the I/O list */
- if (bufp) {
- for(qdp = scp->bufWritesp; qdp; qdp = (osi_queueData_t *) osi_QNext(&qdp->q)) {
- tbufp = osi_GetQData(qdp);
- osi_assertx(tbufp != bufp, "unexpected cm_buf_t value");
- }
+ for (qdp = scp->bufWritesp; qdp; qdp = (osi_queueData_t *) osi_QNext(&qdp->q)) {
+ tbufp = osi_GetQData(qdp);
+ osi_assertx(tbufp != bufp, "unexpected cm_buf_t value");
}
/* queue a held reference to the buffer in the "writing" I/O list */
qdp = osi_QDAlloc();
osi_SetQData(qdp, bufp);
- if (bufp) {
- buf_Hold(bufp);
- bufp->cmFlags |= CM_BUF_CMSTORING;
- }
+ buf_Hold(bufp);
+ _InterlockedOr(&bufp->cmFlags, CM_BUF_CMSTORING);
osi_QAdd((osi_queue_t **) &scp->bufWritesp, &qdp->q);
}
- if (flags & CM_SCACHESYNC_WRITE) {
+ if (bufp && (flags & CM_SCACHESYNC_WRITE)) {
/* mark the buffer as being written to. */
- if (bufp) {
- bufp->cmFlags |= CM_BUF_CMWRITING;
- }
+ _InterlockedOr(&bufp->cmFlags, CM_BUF_CMWRITING);
}
return 0;
osi_queueData_t *qdp;
cm_buf_t *tbufp;
- lock_AssertMutex(&scp->mx);
+ lock_AssertWrite(&scp->rw);
/* now, update the recorded state for RPC-type calls */
if (flags & CM_SCACHESYNC_FETCHSTATUS)
- scp->flags &= ~CM_SCACHEFLAG_FETCHING;
+ _InterlockedAnd(&scp->flags, ~CM_SCACHEFLAG_FETCHING);
if (flags & CM_SCACHESYNC_STORESTATUS)
- scp->flags &= ~CM_SCACHEFLAG_STORING;
+ _InterlockedAnd(&scp->flags, ~CM_SCACHEFLAG_STORING);
+ if (flags & CM_SCACHESYNC_SETSIZE)
+ _InterlockedAnd(&scp->flags, ~CM_SCACHEFLAG_SIZESETTING);
if (flags & CM_SCACHESYNC_STORESIZE)
- scp->flags &= ~CM_SCACHEFLAG_SIZESTORING;
+ _InterlockedAnd(&scp->flags, ~CM_SCACHEFLAG_SIZESTORING);
if (flags & CM_SCACHESYNC_GETCALLBACK)
- scp->flags &= ~CM_SCACHEFLAG_GETCALLBACK;
+ _InterlockedAnd(&scp->flags, ~CM_SCACHEFLAG_GETCALLBACK);
if (flags & CM_SCACHESYNC_STOREDATA_EXCL)
- scp->flags &= ~CM_SCACHEFLAG_DATASTORING;
+ _InterlockedAnd(&scp->flags, ~CM_SCACHEFLAG_DATASTORING);
if (flags & CM_SCACHESYNC_ASYNCSTORE)
- scp->flags &= ~CM_SCACHEFLAG_ASYNCSTORING;
+ _InterlockedAnd(&scp->flags, ~CM_SCACHEFLAG_ASYNCSTORING);
if (flags & CM_SCACHESYNC_LOCK)
- scp->flags &= ~CM_SCACHEFLAG_LOCKING;
+ _InterlockedAnd(&scp->flags, ~CM_SCACHEFLAG_LOCKING);
/* now update the buffer pointer */
- if (flags & CM_SCACHESYNC_FETCHDATA) {
+ if (bufp && (flags & CM_SCACHESYNC_FETCHDATA)) {
int release = 0;
- /* ensure that the buffer isn't already in the I/O list */
- for(qdp = scp->bufReadsp; qdp; qdp = (osi_queueData_t *) osi_QNext(&qdp->q)) {
+ /* ensure that the buffer is in the I/O list */
+ for (qdp = scp->bufReadsp; qdp; qdp = (osi_queueData_t *) osi_QNext(&qdp->q)) {
tbufp = osi_GetQData(qdp);
- if (tbufp == bufp)
+ if (tbufp == bufp)
break;
}
if (qdp) {
osi_QDFree(qdp);
release = 1;
}
- if (bufp) {
- bufp->cmFlags &= ~(CM_BUF_CMFETCHING | CM_BUF_CMFULLYFETCHED);
- if (bufp->flags & CM_BUF_WAITING) {
- osi_Log2(afsd_logp, "CM SyncOpDone Waking [scp 0x%p] bufp 0x%p", scp, bufp);
- osi_Wakeup((LONG_PTR) &bufp);
- }
- if (release)
- buf_Release(bufp);
+ _InterlockedAnd(&bufp->cmFlags, ~(CM_BUF_CMFETCHING | CM_BUF_CMFULLYFETCHED));
+ if (bufp->flags & CM_BUF_WAITING) {
+ osi_Log2(afsd_logp, "CM SyncOpDone FetchData Waking [scp 0x%p] bufp 0x%p", scp, bufp);
+ osi_Wakeup((LONG_PTR) &bufp);
}
+ if (release)
+ buf_Release(bufp);
}
/* now update the buffer pointer */
- if (flags & CM_SCACHESYNC_STOREDATA) {
+ if (bufp && (flags & CM_SCACHESYNC_STOREDATA)) {
int release = 0;
- /* ensure that the buffer isn't already in the I/O list */
- for(qdp = scp->bufWritesp; qdp; qdp = (osi_queueData_t *) osi_QNext(&qdp->q)) {
+ /* ensure that the buffer is in the I/O list */
+ for (qdp = scp->bufWritesp; qdp; qdp = (osi_queueData_t *) osi_QNext(&qdp->q)) {
tbufp = osi_GetQData(qdp);
- if (tbufp == bufp)
+ if (tbufp == bufp)
break;
}
if (qdp) {
osi_QDFree(qdp);
release = 1;
}
- if (bufp) {
- bufp->cmFlags &= ~CM_BUF_CMSTORING;
- if (bufp->flags & CM_BUF_WAITING) {
- osi_Log2(afsd_logp, "CM SyncOpDone Waking [scp 0x%p] bufp 0x%p", scp, bufp);
- osi_Wakeup((LONG_PTR) &bufp);
- }
- if (release)
- buf_Release(bufp);
+ _InterlockedAnd(&bufp->cmFlags, ~CM_BUF_CMSTORING);
+ if (bufp->flags & CM_BUF_WAITING) {
+ osi_Log2(afsd_logp, "CM SyncOpDone StoreData Waking [scp 0x%p] bufp 0x%p", scp, bufp);
+ osi_Wakeup((LONG_PTR) &bufp);
}
+ if (release)
+ buf_Release(bufp);
}
- if (flags & CM_SCACHESYNC_WRITE) {
- if (bufp) {
- osi_assertx(bufp->cmFlags & CM_BUF_CMWRITING, "!CM_BUF_CMWRITING");
-
- bufp->cmFlags &= ~CM_BUF_CMWRITING;
- }
+ if (bufp && (flags & CM_SCACHESYNC_WRITE)) {
+ osi_assertx(bufp->cmFlags & CM_BUF_CMWRITING, "!CM_BUF_CMWRITING");
+ _InterlockedAnd(&bufp->cmFlags, ~CM_BUF_CMWRITING);
}
/* and wakeup anyone who is waiting */
if (scp->flags & CM_SCACHEFLAG_WAITING) {
- osi_Log1(afsd_logp, "CM SyncOpDone Waking scp 0x%p", scp);
+ osi_Log3(afsd_logp, "CM SyncOpDone 0x%x Waking scp 0x%p bufp 0x%p", flags, scp, bufp);
osi_Wakeup((LONG_PTR) &scp->flags);
}
-}
+}
/* merge in a response from an RPC. The scp must be locked, and the callback
* is optional.
* handled after the callback breaking is done, but only one of whose calls
* started before that, can cause old info to be merged from the first call.
*/
-void cm_MergeStatus(cm_scache_t *dscp,
- cm_scache_t *scp, AFSFetchStatus *statusp,
+void cm_MergeStatus(cm_scache_t *dscp,
+ cm_scache_t *scp, AFSFetchStatus *statusp,
AFSVolSync *volsyncp,
- cm_user_t *userp, afs_uint32 flags)
+ cm_user_t *userp, cm_req_t *reqp, afs_uint32 flags)
{
afs_uint64 dataVersion;
+ struct cm_volume *volp = NULL;
+ struct cm_cell *cellp = NULL;
+
+ lock_AssertWrite(&scp->rw);
// yj: i want to create some fake status for the /afs directory and the
// entries under that directory
#ifdef AFS_FREELANCE_CLIENT
- if (cm_freelanceEnabled && scp == cm_data.rootSCachep) {
- osi_Log0(afsd_logp,"cm_MergeStatus Freelance cm_data.rootSCachep");
+ if (cm_freelanceEnabled && scp->fid.cell==AFS_FAKE_ROOT_CELL_ID &&
+ scp->fid.volume==AFS_FAKE_ROOT_VOL_ID) {
+ if (scp == cm_data.rootSCachep) {
+ osi_Log0(afsd_logp,"cm_MergeStatus Freelance cm_data.rootSCachep");
+ statusp->FileType = CM_SCACHETYPE_DIRECTORY;
+ statusp->Length = cm_fakeDirSize;
+ statusp->Length_hi = 0;
+ } else {
+ statusp->FileType = scp->fileType;
+ statusp->Length = scp->length.LowPart;
+ statusp->Length_hi = scp->length.HighPart;
+ }
statusp->InterfaceVersion = 0x1;
- statusp->FileType = CM_SCACHETYPE_DIRECTORY;
statusp->LinkCount = scp->linkCount;
- statusp->Length = cm_fakeDirSize;
- statusp->Length_hi = 0;
statusp->DataVersion = (afs_uint32)(cm_data.fakeDirVersion & 0xFFFFFFFF);
statusp->Author = 0x1;
statusp->Owner = 0x0;
statusp->Group = 0;
statusp->SyncCounter = 0;
statusp->dataVersionHigh = (afs_uint32)(cm_data.fakeDirVersion >> 32);
- statusp->errorCode = 0;
+ statusp->lockCount = 0;
+ statusp->errorCode = 0;
}
#endif /* AFS_FREELANCE_CLIENT */
- if (statusp->errorCode != 0) {
- scp->flags |= CM_SCACHEFLAG_EACCESS;
- osi_Log2(afsd_logp, "Merge, Failure scp %x code 0x%x", scp, statusp->errorCode);
+ if (statusp->errorCode != 0) {
+ _InterlockedOr(&scp->flags, CM_SCACHEFLAG_EACCESS);
+ osi_Log2(afsd_logp, "Merge, Failure scp 0x%p code 0x%x", scp, statusp->errorCode);
scp->fileType = 0; /* unknown */
scp->group = 0;
scp->unixModeBits = 0;
scp->anyAccess = 0;
- scp->dataVersion = 0;
+ scp->dataVersion = CM_SCACHE_VERSION_BAD;
+ scp->bufDataVersionLow = CM_SCACHE_VERSION_BAD;
+ scp->fsLockCount = 0;
if (dscp) {
scp->parentVnode = dscp->fid.vnode;
scp->parentVnode = 0;
scp->parentUnique = 0;
}
- return;
+ goto done;
} else {
- scp->flags &= ~CM_SCACHEFLAG_EACCESS;
+ _InterlockedAnd(&scp->flags, ~CM_SCACHEFLAG_EACCESS);
}
dataVersion = statusp->dataVersionHigh;
dataVersion <<= 32;
dataVersion |= statusp->DataVersion;
- if (!(flags & CM_MERGEFLAG_FORCE) && dataVersion < scp->dataVersion) {
- struct cm_cell *cellp;
+ if (!(flags & CM_MERGEFLAG_FORCE) &&
+ dataVersion < scp->dataVersion &&
+ scp->dataVersion != CM_SCACHE_VERSION_BAD) {
- cellp = cm_FindCellByID(scp->fid.cell);
+ cellp = cm_FindCellByID(scp->fid.cell, 0);
if (scp->cbServerp) {
- struct cm_volume *volp = NULL;
-
- cm_GetVolumeByID(cellp, scp->fid.volume, userp,
- (cm_req_t *) NULL, CM_GETVOL_FLAG_CREATE, &volp);
+ cm_FindVolumeByID(cellp, scp->fid.volume, userp,
+ reqp, CM_GETVOL_FLAG_CREATE, &volp);
osi_Log2(afsd_logp, "old data from server %x volume %s",
scp->cbServerp->addr.sin_addr.s_addr,
volp ? volp->namep : "(unknown)");
- if (volp)
- cm_PutVolume(volp);
}
- osi_Log3(afsd_logp, "Bad merge, scp %x, scp dv %I64d, RPC dv %I64d",
+ osi_Log3(afsd_logp, "Bad merge, scp 0x%p, scp dv %d, RPC dv %d",
scp, scp->dataVersion, dataVersion);
/* we have a number of data fetch/store operations running
* concurrently, and we can tell which one executed last at the
* infinite loop. So we just grin and bear it.
*/
if (!(scp->flags & CM_SCACHEFLAG_RO))
- return;
- }
+ goto done;
+ }
+
+ if (cm_readonlyVolumeVersioning)
+ scp->volumeCreationDate = volsyncp->spare1; /* volume creation date */
scp->serverModTime = statusp->ServerModTime;
scp->fileType = CM_SCACHETYPE_MOUNTPOINT;
else
scp->fileType = CM_SCACHETYPE_SYMLINK;
- }
+ }
else {
- osi_Log2(afsd_logp, "Merge, Invalid File Type (%d), scp %x", statusp->FileType, scp);
+ osi_Log2(afsd_logp, "Merge, Invalid File Type (%d), scp 0x%p", statusp->FileType, scp);
scp->fileType = CM_SCACHETYPE_INVALID; /* invalid */
}
/* and other stuff */
scp->parentVnode = statusp->ParentVnode;
scp->parentUnique = statusp->ParentUnique;
-
+
+ /* -1 is a write lock; any positive values are read locks */
+ scp->fsLockCount = (afs_int32)statusp->lockCount;
+
/* and merge in the private acl cache info, if this is more than the public
* info; merge in the public stuff in any case.
*/
cm_AddACLCache(scp, userp, statusp->CallerAccess);
}
- if ((flags & CM_MERGEFLAG_STOREDATA) && dataVersion - scp->dataVersion == 1) {
- cm_buf_t *bp;
-
- for (bp = cm_data.buf_fileHashTablepp[BUF_FILEHASH(&scp->fid)]; bp; bp=bp->fileHashp)
+ if (scp->dataVersion != 0 &&
+ (!(flags & (CM_MERGEFLAG_DIROP|CM_MERGEFLAG_STOREDATA)) && dataVersion != scp->dataVersion ||
+ (flags & (CM_MERGEFLAG_DIROP|CM_MERGEFLAG_STOREDATA)) && dataVersion - scp->dataVersion > 1)) {
+ /*
+ * We now know that all of the data buffers that we have associated
+ * with this scp are invalid. Subsequent operations will go faster
+ * if the buffers are removed from the hash tables.
+ *
+ * We do not remove directory buffers if the dataVersion delta is 1 because
+ * those version numbers will be updated as part of the directory operation.
+ *
+ * We do not remove storedata buffers because they will still be valid.
+ */
+ int i, j;
+ cm_buf_t **lbpp;
+ cm_buf_t *tbp;
+ cm_buf_t *bp, *prevBp, *nextBp;
+
+ lock_ObtainWrite(&buf_globalLock);
+ i = BUF_FILEHASH(&scp->fid);
+ for (bp = cm_data.buf_fileHashTablepp[i]; bp; bp=nextBp)
{
- if (cm_FidCmp(&scp->fid, &bp->fid) == 0 &&
- bp->dataVersion == scp->dataVersion)
- bp->dataVersion = dataVersion;
- }
+ nextBp = bp->fileHashp;
+ /*
+ * if the buffer belongs to this stat cache entry
+ * and the buffer mutex can be obtained, check the
+ * reference count and if it is zero, remove the buffer
+ * from the hash tables. If there are references,
+ * the buffer might be updated to the current version
+ * so leave it in place.
+ */
+ if (cm_FidCmp(&scp->fid, &bp->fid) == 0 &&
+ lock_TryMutex(&bp->mx)) {
+ if (bp->refCount == 0 &&
+ !(bp->flags & CM_BUF_READING | CM_BUF_WRITING | CM_BUF_DIRTY)) {
+ prevBp = bp->fileHashBackp;
+ bp->fileHashBackp = bp->fileHashp = NULL;
+ if (prevBp)
+ prevBp->fileHashp = nextBp;
+ else
+ cm_data.buf_fileHashTablepp[i] = nextBp;
+ if (nextBp)
+ nextBp->fileHashBackp = prevBp;
+
+ j = BUF_HASH(&bp->fid, &bp->offset);
+ lbpp = &(cm_data.buf_scacheHashTablepp[j]);
+ for(tbp = *lbpp; tbp; lbpp = &tbp->hashp, tbp = tbp->hashp) {
+ if (tbp == bp)
+ break;
+ }
+
+ /* we better find it */
+ osi_assertx(tbp != NULL, "cm_MergeStatus: buf_scacheHashTablepp table screwup");
+ *lbpp = bp->hashp; /* hash out */
+ bp->hashp = NULL;
+
+ _InterlockedAnd(&bp->qFlags, ~CM_BUF_QINHASH);
+ }
+ lock_ReleaseMutex(&bp->mx);
+ }
+ }
+ lock_ReleaseWrite(&buf_globalLock);
}
+
+ /*
+ * If the dataVersion has changed, the mountPointStringp must be cleared
+ * in order to force a re-evaluation by cm_HandleLink(). The Windows CM
+ * does not update a mountpoint or symlink by altering the contents of
+ * the file data; but the Unix CM does.
+ */
+ if (scp->dataVersion != dataVersion && !(flags & CM_MERGEFLAG_FETCHDATA))
+ scp->mountPointStringp[0] = '\0';
+
+ /* We maintain a range of buffer dataVersion values which are considered
+ * valid. This avoids the need to update the dataVersion on each buffer
+ * object during an uncontested storeData operation. As a result this
+ * merge status no longer has performance characteristics derived from
+ * the size of the file.
+ */
+ if (((flags & CM_MERGEFLAG_STOREDATA) && dataVersion - scp->dataVersion > 1) ||
+ (!(flags & CM_MERGEFLAG_STOREDATA) && scp->dataVersion != dataVersion) ||
+ scp->bufDataVersionLow == 0)
+ scp->bufDataVersionLow = dataVersion;
+
scp->dataVersion = dataVersion;
+
+ /*
+ * If someone is waiting for status information, we can wake them up
+ * now even though the entity that issued the FetchStatus may not
+ * have completed yet.
+ */
+ cm_SyncOpDone(scp, NULL, CM_SCACHESYNC_FETCHSTATUS);
+
+ /*
+ * We just successfully merged status on the stat cache object.
+ * This means that the associated volume must be online.
+ */
+ if (!volp) {
+ if (!cellp)
+ cellp = cm_FindCellByID(scp->fid.cell, 0);
+ cm_FindVolumeByID(cellp, scp->fid.volume, userp, reqp, 0, &volp);
+ }
+ if (volp) {
+ cm_vol_state_t *statep = cm_VolumeStateByID(volp, scp->fid.volume);
+ if (statep->state != vl_online) {
+ lock_ObtainWrite(&volp->rw);
+ cm_VolumeStatusNotification(volp, statep->ID, statep->state, vl_online);
+ statep->state = vl_online;
+ lock_ReleaseWrite(&volp->rw);
+ }
+ }
+ done:
+ if (volp)
+ cm_PutVolume(volp);
+
}
/* note that our stat cache info is incorrect, so force us eventually
*/
void cm_DiscardSCache(cm_scache_t *scp)
{
- lock_AssertMutex(&scp->mx);
+ lock_AssertWrite(&scp->rw);
if (scp->cbServerp) {
cm_PutServer(scp->cbServerp);
scp->cbServerp = NULL;
}
scp->cbExpires = 0;
- scp->flags &= ~CM_SCACHEFLAG_CALLBACK;
+ scp->volumeCreationDate = 0;
+ _InterlockedAnd(&scp->flags, ~(CM_SCACHEFLAG_CALLBACK | CM_SCACHEFLAG_LOCAL));
cm_dnlcPurgedp(scp);
cm_dnlcPurgevp(scp);
cm_FreeAllACLEnts(scp);
+ if (scp->fileType == CM_SCACHETYPE_DFSLINK)
+ cm_VolStatus_Invalidate_DFS_Mapping(scp);
+
/* Force mount points and symlinks to be re-evaluated */
scp->mountPointStringp[0] = '\0';
}
afsFidp->Volume = fidp->volume;
afsFidp->Vnode = fidp->vnode;
afsFidp->Unique = fidp->unique;
-}
+}
#ifdef DEBUG_REFCOUNT
void cm_HoldSCacheNoLockDbg(cm_scache_t *scp, char * file, long line)
void cm_HoldSCacheNoLock(cm_scache_t *scp)
#endif
{
+ afs_int32 refCount;
+
osi_assertx(scp != NULL, "null cm_scache_t");
- scp->refCount++;
+ lock_AssertAny(&cm_scacheLock);
+ refCount = InterlockedIncrement(&scp->refCount);
#ifdef DEBUG_REFCOUNT
- osi_Log2(afsd_logp,"cm_HoldSCacheNoLock scp 0x%p ref %d",scp, scp->refCount);
- afsi_log("%s:%d cm_HoldSCacheNoLock scp 0x%p, ref %d", file, line, scp, scp->refCount);
+ osi_Log2(afsd_logp,"cm_HoldSCacheNoLock scp 0x%p ref %d",scp, refCount);
+ afsi_log("%s:%d cm_HoldSCacheNoLock scp 0x%p, ref %d", file, line, scp, refCount);
#endif
}
void cm_HoldSCache(cm_scache_t *scp)
#endif
{
+ afs_int32 refCount;
+
osi_assertx(scp != NULL, "null cm_scache_t");
- lock_ObtainWrite(&cm_scacheLock);
- scp->refCount++;
+ lock_ObtainRead(&cm_scacheLock);
+ refCount = InterlockedIncrement(&scp->refCount);
#ifdef DEBUG_REFCOUNT
- osi_Log2(afsd_logp,"cm_HoldSCache scp 0x%p ref %d",scp, scp->refCount);
- afsi_log("%s:%d cm_HoldSCache scp 0x%p ref %d", file, line, scp, scp->refCount);
+ osi_Log2(afsd_logp,"cm_HoldSCache scp 0x%p ref %d",scp, refCount);
+ afsi_log("%s:%d cm_HoldSCache scp 0x%p ref %d", file, line, scp, refCount);
#endif
- lock_ReleaseWrite(&cm_scacheLock);
+ lock_ReleaseRead(&cm_scacheLock);
}
#ifdef DEBUG_REFCOUNT
void cm_ReleaseSCacheNoLock(cm_scache_t *scp)
#endif
{
+ afs_int32 refCount;
+
osi_assertx(scp != NULL, "null cm_scache_t");
- if (scp->refCount == 0)
+ lock_AssertAny(&cm_scacheLock);
+
+ refCount = InterlockedDecrement(&scp->refCount);
+#ifdef DEBUG_REFCOUNT
+ if (refCount < 0)
osi_Log1(afsd_logp,"cm_ReleaseSCacheNoLock about to panic scp 0x%x",scp);
- osi_assertx(scp->refCount-- >= 0, "cm_scache_t refCount 0");
+#endif
+ osi_assertx(refCount >= 0, "cm_scache_t refCount 0");
#ifdef DEBUG_REFCOUNT
- osi_Log2(afsd_logp,"cm_ReleaseSCacheNoLock scp 0x%p ref %d",scp,scp->refCount);
- afsi_log("%s:%d cm_ReleaseSCacheNoLock scp 0x%p ref %d", file, line, scp, scp->refCount);
+ osi_Log2(afsd_logp,"cm_ReleaseSCacheNoLock scp 0x%p ref %d",scp, refCount);
+ afsi_log("%s:%d cm_ReleaseSCacheNoLock scp 0x%p ref %d", file, line, scp, refCount);
#endif
+
+ if (refCount == 0 && (scp->flags & CM_SCACHEFLAG_DELETED)) {
+ int deleted = 0;
+ long lockstate;
+
+ lockstate = lock_GetRWLockState(&cm_scacheLock);
+ if (lockstate != OSI_RWLOCK_WRITEHELD)
+ lock_ReleaseRead(&cm_scacheLock);
+ else
+ lock_ReleaseWrite(&cm_scacheLock);
+
+ lock_ObtainWrite(&scp->rw);
+ if (scp->flags & CM_SCACHEFLAG_DELETED)
+ deleted = 1;
+
+ if (refCount == 0 && deleted) {
+ lock_ObtainWrite(&cm_scacheLock);
+ cm_RecycleSCache(scp, 0);
+ if (lockstate != OSI_RWLOCK_WRITEHELD)
+ lock_ConvertWToR(&cm_scacheLock);
+ } else {
+ if (lockstate != OSI_RWLOCK_WRITEHELD)
+ lock_ObtainRead(&cm_scacheLock);
+ else
+ lock_ObtainWrite(&cm_scacheLock);
+ }
+ lock_ReleaseWrite(&scp->rw);
+ }
}
#ifdef DEBUG_REFCOUNT
void cm_ReleaseSCache(cm_scache_t *scp)
#endif
{
+ afs_int32 refCount;
+
osi_assertx(scp != NULL, "null cm_scache_t");
- lock_ObtainWrite(&cm_scacheLock);
- if (scp->refCount == 0)
+ lock_ObtainRead(&cm_scacheLock);
+ refCount = InterlockedDecrement(&scp->refCount);
+#ifdef DEBUG_REFCOUNT
+ if (refCount < 0)
osi_Log1(afsd_logp,"cm_ReleaseSCache about to panic scp 0x%x",scp);
- osi_assertx(scp->refCount != 0, "cm_scache_t refCount 0");
- scp->refCount--;
+#endif
+ osi_assertx(refCount >= 0, "cm_scache_t refCount 0");
#ifdef DEBUG_REFCOUNT
- osi_Log2(afsd_logp,"cm_ReleaseSCache scp 0x%p ref %d",scp,scp->refCount);
- afsi_log("%s:%d cm_ReleaseSCache scp 0x%p ref %d", file, line, scp, scp->refCount);
+ osi_Log2(afsd_logp,"cm_ReleaseSCache scp 0x%p ref %d",scp, refCount);
+ afsi_log("%s:%d cm_ReleaseSCache scp 0x%p ref %d", file, line, scp, refCount);
#endif
- lock_ReleaseWrite(&cm_scacheLock);
+ lock_ReleaseRead(&cm_scacheLock);
+
+ if (scp->flags & CM_SCACHEFLAG_DELETED) {
+ int deleted = 0;
+ lock_ObtainWrite(&scp->rw);
+ if (scp->flags & CM_SCACHEFLAG_DELETED)
+ deleted = 1;
+ if (deleted) {
+ lock_ObtainWrite(&cm_scacheLock);
+ cm_RecycleSCache(scp, 0);
+ lock_ReleaseWrite(&cm_scacheLock);
+ }
+ lock_ReleaseWrite(&scp->rw);
+ }
}
/* just look for the scp entry to get filetype */
{
long hash;
cm_scache_t *scp;
-
+
hash = CM_SCACHE_HASH(fidp);
-
+
osi_assertx(fidp->cell != 0, "unassigned cell value");
lock_ObtainWrite(&cm_scacheLock);
return 0;
}
-/* dump all scp's that have reference count > 0 to a file.
- * cookie is used to identify this batch for easy parsing,
- * and it a string provided by a caller
+/* dump all scp's that have reference count > 0 to a file.
+ * cookie is used to identify this batch for easy parsing,
+ * and it a string provided by a caller
*/
int cm_DumpSCache(FILE *outputFile, char *cookie, int lock)
{
int zilch;
cm_scache_t *scp;
+ osi_queue_t *q;
char output[2048];
int i;
-
+
if (lock)
lock_ObtainRead(&cm_scacheLock);
-
+
sprintf(output, "%s - dumping all scache - cm_data.currentSCaches=%d, cm_data.maxSCaches=%d\r\n", cookie, cm_data.currentSCaches, cm_data.maxSCaches);
WriteFile(outputFile, output, (DWORD)strlen(output), &zilch, NULL);
-
- for (scp = cm_data.allSCachesp; scp; scp = scp->allNextp)
+
+ for (scp = cm_data.allSCachesp; scp; scp = scp->allNextp)
{
- 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",
- cookie, scp, scp->fid.cell, scp->fid.volume, scp->fid.vnode, scp->fid.unique,
- scp->volp, scp->fileType, scp->dataVersion, scp->length.QuadPart, scp->mountPointStringp, scp->flags,
- (unsigned long)scp->cbExpires, scp->refCount);
+ time_t t;
+ char *srvStr = NULL;
+ afs_uint32 srvStrRpc = TRUE;
+ char *cbt = NULL;
+ char *cdrot = NULL;
+
+ if (scp->cbServerp) {
+ if (!((scp->cbServerp->flags & CM_SERVERFLAG_UUID) &&
+ UuidToString((UUID *)&scp->cbServerp->uuid, &srvStr) == RPC_S_OK)) {
+ srvStr = malloc(16); /* enough for 255.255.255.255 */
+ if (srvStr != NULL)
+ afs_inet_ntoa_r(scp->cbServerp->addr.sin_addr.s_addr, srvStr);
+ srvStrRpc = FALSE;
+ }
+ }
+ if (scp->cbExpires) {
+ t = scp->cbExpires;
+ cbt = ctime(&t);
+ if (cbt) {
+ cbt = strdup(cbt);
+ cbt[strlen(cbt)-1] = '\0';
+ }
+ }
+ if (scp->volumeCreationDate) {
+ t = scp->volumeCreationDate;
+ cdrot = ctime(&t);
+ if (cdrot) {
+ cdrot = strdup(cdrot);
+ cdrot[strlen(cdrot)-1] = '\0';
+ }
+ }
+ sprintf(output,
+ "%s scp=0x%p, fid (cell=%d, volume=%d, vnode=%d, unique=%d) type=%d dv=%I64d len=0x%I64x "
+ "mp='%s' Locks (server=0x%x shared=%d excl=%d clnt=%d) fsLockCount=%d linkCount=%d anyAccess=0x%x "
+ "flags=0x%x cbServer='%s' cbExpires='%s' volumeCreationDate='%s' refCount=%u\r\n",
+ cookie, scp, scp->fid.cell, scp->fid.volume, scp->fid.vnode, scp->fid.unique,
+ scp->fileType, scp->dataVersion, scp->length.QuadPart, scp->mountPointStringp,
+ scp->serverLock, scp->sharedLocks, scp->exclusiveLocks, scp->clientLocks, scp->fsLockCount,
+ scp->linkCount, scp->anyAccess, scp->flags, srvStr ? srvStr : "<none>", cbt ? cbt : "<none>",
+ cdrot ? cdrot : "<none>", scp->refCount);
WriteFile(outputFile, output, (DWORD)strlen(output), &zilch, NULL);
+
+ if (scp->fileLocksH) {
+ sprintf(output, " %s - begin dumping scp locks\r\n", cookie);
+ WriteFile(outputFile, output, (DWORD)strlen(output), &zilch, NULL);
+
+ for (q = scp->fileLocksH; q; q = osi_QNext(q)) {
+ cm_file_lock_t * lockp = (cm_file_lock_t *)((char *) q - offsetof(cm_file_lock_t, fileq));
+ sprintf(output, " %s lockp=0x%p scp=0x%p, cm_userp=0x%p offset=0x%I64x len=0x%08I64x type=0x%x "
+ "key=0x%I64x flags=0x%x update=0x%I64u\r\n",
+ cookie, lockp, lockp->scp, lockp->userp, lockp->range.offset, lockp->range.length,
+ lockp->lockType, lockp->key, lockp->flags, (afs_uint64)lockp->lastUpdate);
+ WriteFile(outputFile, output, (DWORD)strlen(output), &zilch, NULL);
+ }
+
+ sprintf(output, " %s - done dumping scp locks\r\n", cookie);
+ WriteFile(outputFile, output, (DWORD)strlen(output), &zilch, NULL);
+ }
+
+ if (srvStr) {
+ if (srvStrRpc)
+ RpcStringFree(&srvStr);
+ else
+ free(srvStr);
+ }
+ if (cbt)
+ free(cbt);
+ if (cdrot)
+ free(cdrot);
}
-
+
sprintf(output, "%s - Done dumping all scache.\r\n", cookie);
WriteFile(outputFile, output, (DWORD)strlen(output), &zilch, NULL);
- sprintf(output, "%s - dumping cm_data.scacheHashTable - cm_data.scacheHashTableSize=%d\r\n", cookie, cm_data.scacheHashTableSize);
+ sprintf(output, "%s - dumping cm_data.scacheHashTable - cm_data.scacheHashTableSize=%d\r\n",
+ cookie, cm_data.scacheHashTableSize);
WriteFile(outputFile, output, (DWORD)strlen(output), &zilch, NULL);
-
+
for (i = 0; i < cm_data.scacheHashTableSize; i++)
{
- for(scp = cm_data.scacheHashTablep[i]; scp; scp=scp->nextp)
+ for(scp = cm_data.scacheHashTablep[i]; scp; scp=scp->nextp)
{
- sprintf(output, "%s scp=0x%p, hash=%d, fid (cell=%d, volume=%d, vnode=%d, unique=%d)\r\n",
+ sprintf(output, "%s scp=0x%p, hash=%d, fid (cell=%d, volume=%d, vnode=%d, unique=%d)\r\n",
cookie, scp, i, scp->fid.cell, scp->fid.volume, scp->fid.vnode, scp->fid.unique);
WriteFile(outputFile, output, (DWORD)strlen(output), &zilch, NULL);
}
sprintf(output, "%s - Done dumping cm_data.scacheHashTable\r\n", cookie);
WriteFile(outputFile, output, (DWORD)strlen(output), &zilch, NULL);
-
+
+ sprintf(output, "%s - begin dumping all file locks\r\n", cookie);
+ WriteFile(outputFile, output, (DWORD)strlen(output), &zilch, NULL);
+
+ for (q = cm_allFileLocks; q; q = osi_QNext(q)) {
+ cm_file_lock_t * lockp = (cm_file_lock_t *)q;
+ sprintf(output, "%s filelockp=0x%p scp=0x%p, cm_userp=0x%p offset=0x%I64x len=0x%08I64x type=0x%x key=0x%I64x flags=0x%x update=0x%I64u\r\n",
+ cookie, lockp, lockp->scp, lockp->userp, lockp->range.offset, lockp->range.length,
+ lockp->lockType, lockp->key, lockp->flags, (afs_uint64)lockp->lastUpdate);
+ WriteFile(outputFile, output, (DWORD)strlen(output), &zilch, NULL);
+ }
+
+ sprintf(output, "%s - done dumping all file locks\r\n", cookie);
+ WriteFile(outputFile, output, (DWORD)strlen(output), &zilch, NULL);
+
if (lock)
- lock_ReleaseRead(&cm_scacheLock);
- return (0);
+ lock_ReleaseRead(&cm_scacheLock);
+ return (0);
}
git://git.openafs.org / openafs.git / blobdiff