#include "afsd.h"
+/*extern void afsi_log(char *pattern, ...);*/
+
extern osi_hyper_t hzero;
/* hash table stuff */
/* must be called with cm_scacheLock write-locked! */
void cm_AdjustLRU(cm_scache_t *scp)
{
- if (scp == cm_scacheLRULastp)
- cm_scacheLRULastp = (cm_scache_t *) osi_QPrev(&scp->q);
- osi_QRemove((osi_queue_t **) &cm_scacheLRUFirstp, &scp->q);
- osi_QAdd((osi_queue_t **) &cm_scacheLRUFirstp, &scp->q);
- if (!cm_scacheLRULastp) cm_scacheLRULastp = scp;
+ if (scp == cm_scacheLRULastp)
+ cm_scacheLRULastp = (cm_scache_t *) osi_QPrev(&scp->q);
+ osi_QRemove((osi_queue_t **) &cm_scacheLRUFirstp, &scp->q);
+ osi_QAdd((osi_queue_t **) &cm_scacheLRUFirstp, &scp->q);
+ if (!cm_scacheLRULastp)
+ cm_scacheLRULastp = scp;
}
/* called with cm_scacheLock write-locked; find a vnode to recycle.
*/
cm_scache_t *cm_GetNewSCache(void)
{
- cm_scache_t *scp;
- int i;
- cm_scache_t **lscpp;
- cm_scache_t *tscp;
-
- if (cm_currentSCaches >= cm_maxSCaches) {
- for (scp = cm_scacheLRULastp;
- scp;
- scp = (cm_scache_t *) osi_QPrev(&scp->q)) {
- if (scp->refCount == 0) break;
- }
+ cm_scache_t *scp;
+ int i;
+ cm_scache_t **lscpp;
+ cm_scache_t *tscp;
+
+ if (cm_currentSCaches >= cm_maxSCaches) {
+ for (scp = cm_scacheLRULastp;
+ scp;
+ scp = (cm_scache_t *) osi_QPrev(&scp->q)) {
+ if (scp->refCount == 0)
+ break;
+ }
- if (scp) {
- /* we found an entry, so return it */
- if (scp->flags & CM_SCACHEFLAG_INHASH) {
- /* hash it out first */
- i = CM_SCACHE_HASH(&scp->fid);
- lscpp = &cm_hashTablep[i];
- for (tscp = *lscpp;
- tscp;
- lscpp = &tscp->nextp, tscp = *lscpp) {
- if (tscp == scp) break;
- }
- osi_assertx(tscp, "afsd: scache hash screwup");
- *lscpp = scp->nextp;
- scp->flags &= ~CM_SCACHEFLAG_INHASH;
- }
-
- /* look for things that shouldn't still be set */
- osi_assert(scp->bufWritesp == NULL);
- osi_assert(scp->bufReadsp == NULL);
-
- /* invalidate so next merge works fine;
- * also initialize some flags */
- scp->flags &= ~(CM_SCACHEFLAG_STATD
- | CM_SCACHEFLAG_RO
- | CM_SCACHEFLAG_PURERO
- | CM_SCACHEFLAG_OVERQUOTA
- | CM_SCACHEFLAG_OUTOFSPACE);
- scp->serverModTime = 0;
- scp->dataVersion = 0;
- scp->bulkStatProgress = hzero;
-
- /* discard callback */
- scp->cbServerp = NULL;
- scp->cbExpires = 0;
-
- /* remove from dnlc */
- cm_dnlcPurgedp(scp);
- cm_dnlcPurgevp(scp);
-
- /* discard cached status; if non-zero, Close
- * 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 */
- if (scp->mountPointStringp) {
- free(scp->mountPointStringp);
- scp->mountPointStringp = NULL;
- }
- if (scp->mountRootFidp) {
- free(scp->mountRootFidp);
- scp->mountRootFidp = NULL;
- }
- if (scp->dotdotFidp) {
- free(scp->dotdotFidp);
- scp->dotdotFidp = NULL;
- }
-
- /* not locked, but there can be no references to this guy
- * while we hold the global refcount lock.
- */
- cm_FreeAllACLEnts(scp);
-
- /* now remove from the LRU queue and put it back at the
- * head of the LRU queue.
- */
- cm_AdjustLRU(scp);
-
- /* and we're done */
- return scp;
+ if (scp) {
+ /* we found an entry, so return it */
+ if (scp->flags & CM_SCACHEFLAG_INHASH) {
+ /* hash it out first */
+ i = CM_SCACHE_HASH(&scp->fid);
+ lscpp = &cm_hashTablep[i];
+ for (tscp = *lscpp;
+ tscp;
+ lscpp = &tscp->nextp, tscp = *lscpp) {
+ if (tscp == scp)
+ break;
}
- }
+ osi_assertx(tscp, "afsd: scache hash screwup");
+ *lscpp = scp->nextp;
+ scp->flags &= ~CM_SCACHEFLAG_INHASH;
+ }
+
+ /* look for things that shouldn't still be set */
+ osi_assert(scp->bufWritesp == NULL);
+ osi_assert(scp->bufReadsp == NULL);
+
+ /* invalidate so next merge works fine;
+ * also initialize some flags */
+ scp->flags &= ~(CM_SCACHEFLAG_STATD
+ | CM_SCACHEFLAG_RO
+ | CM_SCACHEFLAG_PURERO
+ | CM_SCACHEFLAG_OVERQUOTA
+ | CM_SCACHEFLAG_OUTOFSPACE);
+ scp->serverModTime = 0;
+ scp->dataVersion = 0;
+ scp->bulkStatProgress = hzero;
+
+ /* discard callback */
+ if (scp->cbServerp) {
+ cm_PutServer(scp->cbServerp);
+ scp->cbServerp = NULL;
+ }
+ scp->cbExpires = 0;
+
+ /* remove from dnlc */
+ cm_dnlcPurgedp(scp);
+ cm_dnlcPurgevp(scp);
+
+ /* discard cached status; if non-zero, Close
+ * 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 */
+ if (scp->mountPointStringp) {
+ free(scp->mountPointStringp);
+ scp->mountPointStringp = NULL;
+ }
+ if (scp->mountRootFidp) {
+ free(scp->mountRootFidp);
+ scp->mountRootFidp = NULL;
+ }
+ if (scp->dotdotFidp) {
+ free(scp->dotdotFidp);
+ scp->dotdotFidp = NULL;
+ }
+
+ /* not locked, but there can be no references to this guy
+ * while we hold the global refcount lock.
+ */
+ cm_FreeAllACLEnts(scp);
+
+ /* now remove from the LRU queue and put it back at the
+ * head of the LRU queue.
+ */
+ cm_AdjustLRU(scp);
+
+ /* and we're done */
+ return scp;
+ }
+ }
- /* 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.
- */
- scp = malloc(sizeof(*scp));
- memset(scp, 0, sizeof(*scp));
- lock_InitializeMutex(&scp->mx, "cm_scache_t mutex");
- lock_InitializeRWLock(&scp->bufCreateLock, "cm_scache_t bufCreateLock");
-
- /* and put it in the LRU queue */
- osi_QAdd((osi_queue_t **) &cm_scacheLRUFirstp, &scp->q);
- if (!cm_scacheLRULastp) cm_scacheLRULastp = scp;
- cm_currentSCaches++;
- cm_dnlcPurgedp(scp); /* make doubly sure that this is not in dnlc */
- cm_dnlcPurgevp(scp);
- return scp;
-}
+ /* 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.
+ */
+ scp = malloc(sizeof(*scp));
+ memset(scp, 0, sizeof(*scp));
+ lock_InitializeMutex(&scp->mx, "cm_scache_t mutex");
+ lock_InitializeRWLock(&scp->bufCreateLock, "cm_scache_t bufCreateLock");
+
+ /* and put it in the LRU queue */
+ osi_QAdd((osi_queue_t **) &cm_scacheLRUFirstp, &scp->q);
+ if (!cm_scacheLRULastp)
+ cm_scacheLRULastp = scp;
+ cm_currentSCaches++;
+ cm_dnlcPurgedp(scp); /* make doubly sure that this is not in dnlc */
+ cm_dnlcPurgevp(scp);
+ return scp;
+}
/* like strcmp, only for fids */
int cm_FidCmp(cm_fid_t *ap, cm_fid_t *bp)
{
- if (ap->vnode != bp->vnode) return 1;
- if (ap->volume != bp->volume) return 1;
- if (ap->unique != bp->unique) return 1;
- if (ap->cell != bp->cell) return 1;
- return 0;
+ if (ap->vnode != bp->vnode)
+ return 1;
+ if (ap->volume != bp->volume)
+ return 1;
+ if (ap->unique != bp->unique)
+ return 1;
+ if (ap->cell != bp->cell)
+ return 1;
+ return 0;
}
void cm_fakeSCacheInit()
{
- memset(&cm_fakeSCache, 0, sizeof(cm_fakeSCache));
- lock_InitializeMutex(&cm_fakeSCache.mx, "cm_scache_t mutex");
- cm_fakeSCache.cbServerp = (struct cm_server *)(-1);
- /* can leave clientModTime at 0 */
- cm_fakeSCache.fileType = CM_SCACHETYPE_FILE;
- cm_fakeSCache.unixModeBits = 0777;
- cm_fakeSCache.length.LowPart = 1000;
- cm_fakeSCache.linkCount = 1;
-}
+ memset(&cm_fakeSCache, 0, sizeof(cm_fakeSCache));
+ lock_InitializeMutex(&cm_fakeSCache.mx, "cm_scache_t mutex");
+ cm_fakeSCache.cbServerp = (struct cm_server *)(-1);
+ /* can leave clientModTime at 0 */
+ cm_fakeSCache.fileType = CM_SCACHETYPE_FILE;
+ cm_fakeSCache.unixModeBits = 0777;
+ cm_fakeSCache.length.LowPart = 1000;
+ cm_fakeSCache.linkCount = 1;
+}
void cm_InitSCache(long maxSCaches)
{
- static osi_once_t once;
+ static osi_once_t once;
- if (osi_Once(&once)) {
- lock_InitializeRWLock(&cm_scacheLock, "cm_scacheLock");
- cm_hashTableSize = maxSCaches / 2;
- cm_hashTablep = malloc(sizeof(cm_scache_t *) * cm_hashTableSize);
- memset(cm_hashTablep, 0, sizeof(cm_scache_t *) * cm_hashTableSize);
- cm_allFileLocks = NULL;
- cm_currentSCaches = 0;
- cm_maxSCaches = maxSCaches;
- cm_fakeSCacheInit();
- cm_dnlcInit();
- osi_EndOnce(&once);
- }
+ if (osi_Once(&once)) {
+ lock_InitializeRWLock(&cm_scacheLock, "cm_scacheLock");
+ cm_hashTableSize = maxSCaches / 2;
+ cm_hashTablep = malloc(sizeof(cm_scache_t *) * cm_hashTableSize);
+ memset(cm_hashTablep, 0, sizeof(cm_scache_t *) * cm_hashTableSize);
+ cm_allFileLocks = NULL;
+ cm_currentSCaches = 0;
+ cm_maxSCaches = maxSCaches;
+ cm_fakeSCacheInit();
+ cm_dnlcInit();
+ osi_EndOnce(&once);
+ }
}
/* version that doesn't bother creating the entry if we don't find it */
cm_scache_t *cm_FindSCache(cm_fid_t *fidp)
{
- long hash;
- cm_scache_t *scp;
-
- hash = CM_SCACHE_HASH(fidp);
-
- osi_assert(fidp->cell != 0);
+ long hash;
+ cm_scache_t *scp;
- lock_ObtainWrite(&cm_scacheLock);
- for(scp=cm_hashTablep[hash]; scp; scp=scp->nextp) {
- if (cm_FidCmp(fidp, &scp->fid) == 0) {
- scp->refCount++;
- cm_AdjustLRU(scp);
- lock_ReleaseWrite(&cm_scacheLock);
- return scp;
- }
+ hash = CM_SCACHE_HASH(fidp);
+
+ osi_assert(fidp->cell != 0);
+
+ lock_ObtainWrite(&cm_scacheLock);
+ for(scp=cm_hashTablep[hash]; scp; scp=scp->nextp) {
+ if (cm_FidCmp(fidp, &scp->fid) == 0) {
+ cm_HoldSCacheNoLock(scp);
+ cm_AdjustLRU(scp);
+ lock_ReleaseWrite(&cm_scacheLock);
+ return scp;
}
- lock_ReleaseWrite(&cm_scacheLock);
- return NULL;
+ }
+ lock_ReleaseWrite(&cm_scacheLock);
+ return NULL;
}
long cm_GetSCache(cm_fid_t *fidp, cm_scache_t **outScpp, cm_user_t *userp,
- cm_req_t *reqp)
+ cm_req_t *reqp)
{
- long hash;
- cm_scache_t *scp;
- long code;
- cm_volume_t *volp;
- cm_cell_t *cellp;
- char* mp;
- int special; // yj: boolean variable to test if file is on root.afs
- int isRoot;
+ long hash;
+ cm_scache_t *scp;
+ long code;
+ cm_volume_t *volp = 0;
+ cm_cell_t *cellp;
+ char* mp = 0;
+ int special; // yj: boolean variable to test if file is on root.afs
+ int isRoot;
+ extern cm_fid_t cm_rootFid;
- hash = CM_SCACHE_HASH(fidp);
+ hash = CM_SCACHE_HASH(fidp);
- osi_assert(fidp->cell != 0);
+ osi_assert(fidp->cell != 0);
- // yj: check if we have the scp, if so, we don't need
- // to do anything else
- lock_ObtainWrite(&cm_scacheLock);
- for(scp=cm_hashTablep[hash]; scp; scp=scp->nextp) {
- if (cm_FidCmp(fidp, &scp->fid) == 0) {
- scp->refCount++;
- *outScpp = scp;
- cm_AdjustLRU(scp);
- lock_ReleaseWrite(&cm_scacheLock);
- return 0;
- }
+ if (fidp->cell== cm_rootFid.cell &&
+ fidp->volume==cm_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");
+ }
+
+ // yj: check if we have the scp, if so, we don't need
+ // to do anything else
+ lock_ObtainWrite(&cm_scacheLock);
+ for (scp=cm_hashTablep[hash]; scp; scp=scp->nextp) {
+ if (cm_FidCmp(fidp, &scp->fid) == 0) {
+ cm_HoldSCacheNoLock(scp);
+ *outScpp = scp;
+ cm_AdjustLRU(scp);
+ lock_ReleaseWrite(&cm_scacheLock);
+ return 0;
}
+ }
- // yj: when we get here, it means we don't have an scp
- // so we need to either load it or fake it, depending
- // on whether the file is "special", see below.
-
- // yj: if we're trying to get an scp for a file that's
- // on root.afs of homecell, we want to handle it specially
- // because we have to fill in the status stuff 'coz we
- // don't want trybulkstat to fill it in for us
+ // yj: when we get here, it means we don't have an scp
+ // so we need to either load it or fake it, depending
+ // on whether the file is "special", see below.
+
+ // yj: if we're trying to get an scp for a file that's
+ // on root.afs of homecell, we want to handle it specially
+ // 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==0x1 && fidp->volume==0x20000001 &&
- !(fidp->vnode==0x1 && fidp->unique==0x1));
- isRoot = (fidp->cell==0x1 && fidp->volume==0x20000001 &&
- fidp->vnode==0x1 && fidp->unique==0x1);
- if (cm_freelanceEnabled && isRoot) {
- /* freelance: if we are trying to get the root scp for the first
- time, we will just put in a place holder entry. */
- volp = NULL;
- }
+ 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.
+ */
+ volp = NULL;
+ }
- if (cm_freelanceEnabled && special) {
- /*afsi_log("cm_getscache: special"); */
- lock_ObtainMutex(&cm_Freelance_Lock);
- mp =(cm_localMountPoints+fidp->vnode-2)->mountPointStringp;
- lock_ReleaseMutex(&cm_Freelance_Lock);
-
- scp = cm_GetNewSCache();
+ if (cm_freelanceEnabled && special) {
+ osi_Log0(afsd_logp,"cm_getSCache Freelance and special");
+ if (fidp->vnode > 1) {
+ lock_ObtainMutex(&cm_Freelance_Lock);
+ mp =(cm_localMountPoints+fidp->vnode-2)->mountPointStringp;
+ lock_ReleaseMutex(&cm_Freelance_Lock);
+ } else {
+ mp = "";
+ }
+ scp = cm_GetNewSCache();
- scp->fid = *fidp;
- scp->volp = cm_rootSCachep->volp;
- if (scp->dotdotFidp == (cm_fid_t *) NULL)
- scp->dotdotFidp = (cm_fid_t *) malloc (sizeof(cm_fid_t));
- scp->dotdotFidp->cell=0x1;
- scp->dotdotFidp->volume=0x20000001;
- scp->dotdotFidp->unique=1;
- scp->dotdotFidp->vnode=1;
- scp->flags |= (CM_SCACHEFLAG_PURERO | CM_SCACHEFLAG_RO);
- scp->nextp=cm_hashTablep[hash];
- cm_hashTablep[hash]=scp;
- scp->flags |= CM_SCACHEFLAG_INHASH;
- scp->refCount = 1;
- scp->fileType = CM_SCACHETYPE_MOUNTPOINT;
-
- lock_ObtainMutex(&cm_Freelance_Lock);
- scp->length.LowPart = strlen(mp)+4;
- scp->mountPointStringp=malloc(strlen(mp));
- strcpy(scp->mountPointStringp,mp);
- lock_ReleaseMutex(&cm_Freelance_Lock);
-
- scp->owner=0x0;
- scp->unixModeBits=0x1ff;
- scp->clientModTime=0x3b49f6e2;
- scp->serverModTime=0x3b49f6e2;
- scp->parentUnique = 0x1;
- scp->parentVnode=0x1;
- scp->group=0;
- scp->dataVersion=0x8;
- *outScpp = scp;
- lock_ReleaseWrite(&cm_scacheLock);
- /*afsi_log(" getscache done");*/
- return 0;
-
- }
- // end of yj code
+ scp->fid = *fidp;
+ scp->volp = cm_rootSCachep->volp;
+ if (scp->dotdotFidp == (cm_fid_t *) NULL)
+ scp->dotdotFidp = (cm_fid_t *) malloc (sizeof(cm_fid_t));
+ scp->dotdotFidp->cell=AFS_FAKE_ROOT_CELL_ID;
+ scp->dotdotFidp->volume=AFS_FAKE_ROOT_VOL_ID;
+ scp->dotdotFidp->unique=1;
+ scp->dotdotFidp->vnode=1;
+ scp->flags |= (CM_SCACHEFLAG_PURERO | CM_SCACHEFLAG_RO);
+ scp->nextp=cm_hashTablep[hash];
+ cm_hashTablep[hash]=scp;
+ scp->flags |= CM_SCACHEFLAG_INHASH;
+ scp->refCount = 1;
+ scp->fileType = (cm_localMountPoints+fidp->vnode-2)->fileType;
+
+ lock_ObtainMutex(&cm_Freelance_Lock);
+ scp->length.LowPart = strlen(mp)+4;
+ scp->mountPointStringp=malloc(strlen(mp)+1);
+ strcpy(scp->mountPointStringp,mp);
+ lock_ReleaseMutex(&cm_Freelance_Lock);
+
+ scp->owner=0x0;
+ scp->unixModeBits=0x1ff;
+ scp->clientModTime=FakeFreelanceModTime;
+ scp->serverModTime=FakeFreelanceModTime;
+ scp->parentUnique = 0x1;
+ scp->parentVnode=0x1;
+ scp->group=0;
+ scp->dataVersion=0x8;
+ *outScpp = scp;
+ lock_ReleaseWrite(&cm_scacheLock);
+ /*afsi_log(" getscache done");*/
+ return 0;
+ }
+ // end of yj code
#endif /* AFS_FREELANCE_CLIENT */
- /* 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) return CM_ERROR_NOSUCHCELL;
+ /* 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)
+ return CM_ERROR_NOSUCHCELL;
- code = cm_GetVolumeByID(cellp, fidp->volume, userp, reqp, &volp);
- if (code) return code;
- lock_ObtainWrite(&cm_scacheLock);
- }
+ code = cm_GetVolumeByID(cellp, fidp->volume, userp, reqp, &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_hashTablep[hash]; scp; scp=scp->nextp) {
- if (cm_FidCmp(fidp, &scp->fid) == 0) {
- scp->refCount++;
- cm_AdjustLRU(scp);
- lock_ReleaseWrite(&cm_scacheLock);
- cm_PutVolume(volp);
- *outScpp = scp;
- return 0;
- }
+ /* otherwise, we have the volume, now reverify that the scp doesn't
+ * exist, and proceed.
+ */
+ for (scp=cm_hashTablep[hash]; scp; scp=scp->nextp) {
+ if (cm_FidCmp(fidp, &scp->fid) == 0) {
+ osi_assert(scp->volp == volp);
+ cm_HoldSCacheNoLock(scp);
+ cm_AdjustLRU(scp);
+ lock_ReleaseWrite(&cm_scacheLock);
+ if (volp)
+ cm_PutVolume(volp);
+ *outScpp = scp;
+ return 0;
}
+ }
- /* now, if we don't have the fid, recycle something */
- scp = cm_GetNewSCache();
- osi_assert(!(scp->flags & CM_SCACHEFLAG_INHASH));
- 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
- * "master" copy is stored (defect 11489)
- */
- if(scp->fid.vnode == 1 && scp->fid.unique == 1 && volp->dotdotFidp) {
+ /* now, if we don't have the fid, recycle something */
+ scp = cm_GetNewSCache();
+ osi_assert(!(scp->flags & CM_SCACHEFLAG_INHASH));
+ 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
+ * "master" copy is stored (defect 11489)
+ */
+ if (scp->fid.vnode == 1 && scp->fid.unique == 1 && volp->dotdotFidp) {
if (scp->dotdotFidp == (cm_fid_t *) NULL)
- scp->dotdotFidp = (cm_fid_t *) malloc(sizeof(cm_fid_t));
+ scp->dotdotFidp = (cm_fid_t *) malloc(sizeof(cm_fid_t));
*(scp->dotdotFidp) = *volp->dotdotFidp;
- }
+ }
- if (volp->roID == fidp->volume)
+ if (volp->roID == fidp->volume)
scp->flags |= (CM_SCACHEFLAG_PURERO | CM_SCACHEFLAG_RO);
- else if (volp->bkID == fidp->volume)
+ else if (volp->bkID == fidp->volume)
scp->flags |= CM_SCACHEFLAG_RO;
- }
- scp->nextp = cm_hashTablep[hash];
- cm_hashTablep[hash] = scp;
- scp->flags |= CM_SCACHEFLAG_INHASH;
- scp->refCount = 1;
- lock_ReleaseWrite(&cm_scacheLock);
-
- /* now we have a held scache entry; just return it */
- *outScpp = scp;
+ }
+ scp->nextp = cm_hashTablep[hash];
+ cm_hashTablep[hash] = scp;
+ scp->flags |= CM_SCACHEFLAG_INHASH;
+ scp->refCount = 1;
+
+ /* XXX - The following fields in the cm_scache are
+ * uninitialized:
+ * fileType
+ * parentVnode
+ * parentUnique
+ */
+ lock_ReleaseWrite(&cm_scacheLock);
- return 0;
+ /* now we have a held scache entry; just return it */
+ *outScpp = scp;
+ return 0;
}
/* synchronize a fetch, store, read, write, fetch status or store status.
* CM_SCACHESYNC_STOREDATA_EXCL and CM_SCACHEFLAG_DATASTORING.
*/
long cm_SyncOp(cm_scache_t *scp, cm_buf_t *bufp, cm_user_t *up, cm_req_t *reqp,
- long rights, long flags)
+ long rights, long flags)
{
- osi_queueData_t *qdp;
- long code;
- cm_buf_t *tbufp;
- long outRights;
- int bufLocked;
-
- /* lookup this first */
- bufLocked = flags & CM_SCACHESYNC_BUFLOCKED;
-
- /* some minor assertions */
- if (flags & (CM_SCACHESYNC_STOREDATA | CM_SCACHESYNC_FETCHDATA
- | CM_SCACHESYNC_READ | CM_SCACHESYNC_WRITE
- | CM_SCACHESYNC_SETSIZE)) {
- if (bufp) {
- osi_assert(bufp->refCount > 0);
- /*
- osi_assert(cm_FidCmp(&bufp->fid, &scp->fid) == 0);
- */
- }
- }
- else osi_assert(bufp == NULL);
-
- /* Do the access check. Now we don't really do the access check
- * atomically, since the caller doesn't expect the parent dir to be
- * returned locked, and that is what we'd have to do to prevent a
- * callback breaking message on the parent due to a setacl call from
- * being processed while we're running. So, instead, we check things
- * here, and if things look fine with the access, we proceed to finish
- * the rest of this check. Sort of a hack, but probably good enough.
- */
+ osi_queueData_t *qdp;
+ long code;
+ cm_buf_t *tbufp;
+ long outRights;
+ int bufLocked;
+
+ /* lookup this first */
+ bufLocked = flags & CM_SCACHESYNC_BUFLOCKED;
+
+ /* some minor assertions */
+ if (flags & (CM_SCACHESYNC_STOREDATA | CM_SCACHESYNC_FETCHDATA
+ | CM_SCACHESYNC_READ | CM_SCACHESYNC_WRITE
+ | CM_SCACHESYNC_SETSIZE)) {
+ if (bufp) {
+ osi_assert(bufp->refCount > 0);
+ /*
+ osi_assert(cm_FidCmp(&bufp->fid, &scp->fid) == 0);
+ */
+ }
+ }
+ else osi_assert(bufp == NULL);
+
+ /* Do the access check. Now we don't really do the access check
+ * atomically, since the caller doesn't expect the parent dir to be
+ * returned locked, and that is what we'd have to do to prevent a
+ * callback breaking message on the parent due to a setacl call from
+ * being processed while we're running. So, instead, we check things
+ * here, and if things look fine with the access, we proceed to finish
+ * the rest of this check. Sort of a hack, but probably good enough.
+ */
+
+ while (1) {
+ if (flags & CM_SCACHESYNC_FETCHSTATUS) {
+ /* if we're bringing in a new status block, ensure that
+ * we aren't already doing so, and that no one is
+ * changing the status concurrently, either. We need
+ * to do this, even if the status is of a different
+ * type, since we don't have the ability to figure out,
+ * in the AFS 3 protocols, which status-changing
+ * 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))
+ goto sleep;
+ }
+ if (flags & (CM_SCACHESYNC_STORESIZE | CM_SCACHESYNC_STORESTATUS
+ | CM_SCACHESYNC_SETSIZE | CM_SCACHESYNC_GETCALLBACK)) {
+ /* 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
+ | CM_SCACHEFLAG_SIZESTORING | CM_SCACHEFLAG_GETCALLBACK))
+ goto sleep;
+ if (scp->bufReadsp || scp->bufWritesp) goto sleep;
+ }
+ if (flags & CM_SCACHESYNC_FETCHDATA) {
+ /* if we're bringing in a new chunk of data, make sure that
+ * 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))
+ goto sleep;
+ if (bufp && (bufp->cmFlags & (CM_BUF_CMFETCHING | CM_BUF_CMSTORING)))
+ goto sleep;
+ }
+ if (flags & CM_SCACHESYNC_STOREDATA) {
+ /* same as fetch data */
+ if (scp->flags & (CM_SCACHEFLAG_FETCHING | CM_SCACHEFLAG_STORING
+ | CM_SCACHEFLAG_SIZESTORING | CM_SCACHEFLAG_GETCALLBACK))
+ goto sleep;
+ if (bufp && (bufp->cmFlags & (CM_BUF_CMFETCHING | CM_BUF_CMSTORING)))
+ goto sleep;
+ }
- while (1) {
- if (flags & CM_SCACHESYNC_FETCHSTATUS) {
- /* if we're bringing in a new status block, ensure that
- * we aren't already doing so, and that no one is
- * changing the status concurrently, either. We need
- * to do this, even if the status is of a different
- * type, since we don't have the ability to figure out,
- * in the AFS 3 protocols, which status-changing
- * 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))
- goto sleep;
- }
- if (flags & (CM_SCACHESYNC_STORESIZE | CM_SCACHESYNC_STORESTATUS
- | CM_SCACHESYNC_SETSIZE | CM_SCACHESYNC_GETCALLBACK)) {
- /* 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
- | CM_SCACHEFLAG_SIZESTORING | CM_SCACHEFLAG_GETCALLBACK))
- goto sleep;
- if (scp->bufReadsp || scp->bufWritesp) goto sleep;
- }
- if (flags & CM_SCACHESYNC_FETCHDATA) {
- /* if we're bringing in a new chunk of data, make sure that
- * 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))
- goto sleep;
- if (bufp && (bufp->cmFlags & (CM_BUF_CMFETCHING | CM_BUF_CMSTORING)))
- goto sleep;
- }
- if (flags & CM_SCACHESYNC_STOREDATA) {
- /* same as fetch data */
- if (scp->flags & (CM_SCACHEFLAG_FETCHING | CM_SCACHEFLAG_STORING
- | CM_SCACHEFLAG_SIZESTORING | CM_SCACHEFLAG_GETCALLBACK))
- goto sleep;
- if (bufp && (bufp->cmFlags & (CM_BUF_CMFETCHING | CM_BUF_CMSTORING)))
- goto sleep;
- }
+ if (flags & CM_SCACHESYNC_STOREDATA_EXCL) {
+ /* Don't allow concurrent StoreData RPC's */
+ if (scp->flags & CM_SCACHEFLAG_DATASTORING)
+ goto sleep;
+ }
- if (flags & CM_SCACHESYNC_STOREDATA_EXCL) {
- /* Don't allow concurrent StoreData RPC's */
- if (scp->flags & CM_SCACHEFLAG_DATASTORING)
- goto sleep;
- }
-
- if (flags & CM_SCACHESYNC_ASYNCSTORE) {
- /* Don't allow more than one BKG store request */
- if (scp->flags & CM_SCACHEFLAG_ASYNCSTORING)
- goto sleep;
- }
-
- if (flags & CM_SCACHESYNC_LOCK) {
- /* Don't allow concurrent fiddling with lock lists */
- if (scp->flags & CM_SCACHEFLAG_LOCKING)
- goto sleep;
- }
-
- /* now the operations that don't correspond to making RPCs */
- if (flags & CM_SCACHESYNC_GETSTATUS) {
- /* we can use the status that's here, if we're not
- * bringing in new status.
- */
- if (scp->flags & (CM_SCACHEFLAG_FETCHING))
- goto sleep;
- }
- if (flags & CM_SCACHESYNC_SETSTATUS) {
- /* we can make a change to the local status, as long as
- * the status isn't changing now.
- *
- * If we're fetching or storing a chunk of data, we can
- * change the status locally, since the fetch/store
- * 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))
- goto sleep;
- }
- if (flags & CM_SCACHESYNC_READ) {
- /* we're going to read the data, make sure that the
- * status is available, and that the data is here. It
- * is OK to read while storing the data back.
- */
- if (scp->flags & CM_SCACHEFLAG_FETCHING)
- goto sleep;
- if (bufp && ((bufp->cmFlags
- & (CM_BUF_CMFETCHING
- | CM_BUF_CMFULLYFETCHED))
- == CM_BUF_CMFETCHING))
- goto sleep;
- }
- if (flags & CM_SCACHESYNC_WRITE) {
- /* 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))
- goto sleep;
- if (bufp && (bufp->cmFlags & (CM_BUF_CMFETCHING | CM_BUF_CMSTORING)))
- goto sleep;
- }
+ if (flags & CM_SCACHESYNC_ASYNCSTORE) {
+ /* Don't allow more than one BKG store request */
+ if (scp->flags & CM_SCACHEFLAG_ASYNCSTORING)
+ goto sleep;
+ }
+
+ if (flags & CM_SCACHESYNC_LOCK) {
+ /* Don't allow concurrent fiddling with lock lists */
+ if (scp->flags & CM_SCACHEFLAG_LOCKING)
+ goto sleep;
+ }
- // yj: modified this so that callback only checked if we're
- // not checking something on /afs
- if ( (flags & CM_SCACHESYNC_NEEDCALLBACK)
+ /* now the operations that don't correspond to making RPCs */
+ if (flags & CM_SCACHESYNC_GETSTATUS) {
+ /* we can use the status that's here, if we're not
+ * bringing in new status.
+ */
+ if (scp->flags & (CM_SCACHEFLAG_FETCHING))
+ goto sleep;
+ }
+ if (flags & CM_SCACHESYNC_SETSTATUS) {
+ /* we can make a change to the local status, as long as
+ * the status isn't changing now.
+ *
+ * If we're fetching or storing a chunk of data, we can
+ * change the status locally, since the fetch/store
+ * 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))
+ goto sleep;
+ }
+ if (flags & CM_SCACHESYNC_READ) {
+ /* we're going to read the data, make sure that the
+ * status is available, and that the data is here. It
+ * is OK to read while storing the data back.
+ */
+ if (scp->flags & CM_SCACHEFLAG_FETCHING)
+ goto sleep;
+ if (bufp && ((bufp->cmFlags
+ & (CM_BUF_CMFETCHING
+ | CM_BUF_CMFULLYFETCHED))
+ == CM_BUF_CMFETCHING))
+ goto sleep;
+ }
+ if (flags & CM_SCACHESYNC_WRITE) {
+ /* 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))
+ goto sleep;
+ if (bufp && (bufp->cmFlags & (CM_BUF_CMFETCHING | CM_BUF_CMSTORING)))
+ goto sleep;
+ }
+
+ // 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==0x1 &&
- scp->fid.volume==0x20000001))
+ && (!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 (!cm_HaveCallback(scp)) {
- osi_Log1(afsd_logp, "CM SyncOp getting callback on scp %x",
- (long) scp);
- if (bufLocked) lock_ReleaseMutex(&bufp->mx);
- code = cm_GetCallback(scp, up, reqp, 0);
- if (bufLocked) {
- lock_ReleaseMutex(&scp->mx);
- lock_ObtainMutex(&bufp->mx);
- lock_ObtainMutex(&scp->mx);
- }
- if (code) return code;
- continue;
- }
+ ) {
+ if (!cm_HaveCallback(scp)) {
+ osi_Log1(afsd_logp, "CM SyncOp getting callback on scp %x",
+ (long) scp);
+ if (bufLocked) lock_ReleaseMutex(&bufp->mx);
+ code = cm_GetCallback(scp, up, reqp, 0);
+ if (bufLocked) {
+ lock_ReleaseMutex(&scp->mx);
+ lock_ObtainMutex(&bufp->mx);
+ lock_ObtainMutex(&scp->mx);
}
-
- if (rights) {
- /* can't check access rights without a callback */
- osi_assert(flags & CM_SCACHESYNC_NEEDCALLBACK);
-
- if ((rights & PRSFS_WRITE) && (scp->flags & CM_SCACHEFLAG_RO))
- return CM_ERROR_READONLY;
-
- if (cm_HaveAccessRights(scp, up, rights, &outRights)) {
- if (~outRights & rights) return CM_ERROR_NOACCESS;
- }
- else {
- /* we don't know the required access rights */
- if (bufLocked) lock_ReleaseMutex(&bufp->mx);
- code = cm_GetAccessRights(scp, up, reqp);
- if (code) return code;
- if (bufLocked) {
- lock_ReleaseMutex(&scp->mx);
- lock_ObtainMutex(&bufp->mx);
- lock_ObtainMutex(&scp->mx);
- }
- continue;
- }
+ if (code) return code;
+ continue;
+ }
+ }
+
+ if (rights) {
+ /* can't check access rights without a callback */
+ osi_assert(flags & CM_SCACHESYNC_NEEDCALLBACK);
+
+ if ((rights & PRSFS_WRITE) && (scp->flags & CM_SCACHEFLAG_RO))
+ return CM_ERROR_READONLY;
+
+ if (cm_HaveAccessRights(scp, up, rights, &outRights)) {
+ if (~outRights & rights) return CM_ERROR_NOACCESS;
+ }
+ else {
+ /* we don't know the required access rights */
+ if (bufLocked) lock_ReleaseMutex(&bufp->mx);
+ code = cm_GetAccessRights(scp, up, reqp);
+ if (code) return code;
+ if (bufLocked) {
+ lock_ReleaseMutex(&scp->mx);
+ lock_ObtainMutex(&bufp->mx);
+ lock_ObtainMutex(&scp->mx);
}
+ continue;
+ }
+ }
- /* if we get here, we're happy */
- break;
+ /* if we get here, we're happy */
+ break;
-sleep:
- /* first check if we're not supposed to wait: fail
- * in this case, returning with everything still locked.
- */
- if (flags & CM_SCACHESYNC_NOWAIT) return CM_ERROR_WOULDBLOCK;
-
- /* wait here, then try again */
- osi_Log1(afsd_logp, "CM SyncOp sleeping scp %x", (long) scp);
- scp->flags |= CM_SCACHEFLAG_WAITING;
- if (bufLocked) lock_ReleaseMutex(&bufp->mx);
- osi_SleepM((long) &scp->flags, &scp->mx);
- osi_Log0(afsd_logp, "CM SyncOp woke!");
- if (bufLocked) lock_ObtainMutex(&bufp->mx);
- lock_ObtainMutex(&scp->mx);
- } /* big while loop */
+ sleep:
+ /* first check if we're not supposed to wait: fail
+ * in this case, returning with everything still locked.
+ */
+ if (flags & CM_SCACHESYNC_NOWAIT) return CM_ERROR_WOULDBLOCK;
+
+ /* wait here, then try again */
+ osi_Log1(afsd_logp, "CM SyncOp sleeping scp %x", (long) scp);
+ if ( scp->flags & CM_SCACHEFLAG_WAITING )
+ osi_Log1(afsd_logp, "CM SyncOp CM_SCACHEFLAG_WAITING already set for 0x%x", scp);
+ else
+ osi_Log1(afsd_logp, "CM SyncOp CM_SCACHEFLAG_WAITING set for 0x%x", scp);
+ scp->flags |= CM_SCACHEFLAG_WAITING;
+ if (bufLocked) lock_ReleaseMutex(&bufp->mx);
+ osi_SleepM((long) &scp->flags, &scp->mx);
+ osi_Log0(afsd_logp, "CM SyncOp woke!");
+ if (bufLocked)
+ lock_ObtainMutex(&bufp->mx);
+ lock_ObtainMutex(&scp->mx);
+ } /* big while loop */
- /* now, update the recorded state for RPC-type calls */
- if (flags & CM_SCACHESYNC_FETCHSTATUS)
- scp->flags |= CM_SCACHEFLAG_FETCHING;
- if (flags & CM_SCACHESYNC_STORESTATUS)
- scp->flags |= CM_SCACHEFLAG_STORING;
- if (flags & CM_SCACHESYNC_STORESIZE)
- scp->flags |= CM_SCACHEFLAG_SIZESTORING;
- if (flags & CM_SCACHESYNC_GETCALLBACK)
- scp->flags |= CM_SCACHEFLAG_GETCALLBACK;
- if (flags & CM_SCACHESYNC_STOREDATA_EXCL)
- scp->flags |= CM_SCACHEFLAG_DATASTORING;
- if (flags & CM_SCACHESYNC_ASYNCSTORE)
- scp->flags |= CM_SCACHEFLAG_ASYNCSTORING;
- if (flags & CM_SCACHESYNC_LOCK)
- scp->flags |= CM_SCACHEFLAG_LOCKING;
-
- /* now update the buffer pointer */
- if (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_assert(tbufp != bufp);
- }
- }
-
- /* 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;
- }
- osi_QAdd((osi_queue_t **) &scp->bufReadsp, &qdp->q);
+ /* now, update the recorded state for RPC-type calls */
+ if (flags & CM_SCACHESYNC_FETCHSTATUS)
+ scp->flags |= CM_SCACHEFLAG_FETCHING;
+ if (flags & CM_SCACHESYNC_STORESTATUS)
+ scp->flags |= CM_SCACHEFLAG_STORING;
+ if (flags & CM_SCACHESYNC_STORESIZE)
+ scp->flags |= CM_SCACHEFLAG_SIZESTORING;
+ if (flags & CM_SCACHESYNC_GETCALLBACK)
+ scp->flags |= CM_SCACHEFLAG_GETCALLBACK;
+ if (flags & CM_SCACHESYNC_STOREDATA_EXCL)
+ scp->flags |= CM_SCACHEFLAG_DATASTORING;
+ if (flags & CM_SCACHESYNC_ASYNCSTORE)
+ scp->flags |= CM_SCACHEFLAG_ASYNCSTORING;
+ if (flags & CM_SCACHESYNC_LOCK)
+ scp->flags |= CM_SCACHEFLAG_LOCKING;
+
+ /* now update the buffer pointer */
+ if (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_assert(tbufp != bufp);
+ }
}
- if (flags & CM_SCACHESYNC_STOREDATA) {
- /* 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_assert(tbufp != bufp);
- }
- }
-
- /* 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;
- }
- osi_QAdd((osi_queue_t **) &scp->bufWritesp, &qdp->q);
+ /* 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;
}
-
- return 0;
+ osi_QAdd((osi_queue_t **) &scp->bufReadsp, &qdp->q);
+ }
+
+ if (flags & CM_SCACHESYNC_STOREDATA) {
+ /* 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_assert(tbufp != bufp);
+ }
+ }
+
+ /* 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;
+ }
+ osi_QAdd((osi_queue_t **) &scp->bufWritesp, &qdp->q);
+ }
+
+ return 0;
}
/* for those syncops that setup for RPCs.
*/
void cm_SyncOpDone(cm_scache_t *scp, cm_buf_t *bufp, long flags)
{
- osi_queueData_t *qdp;
- cm_buf_t *tbufp;
-
- /* now, update the recorded state for RPC-type calls */
- if (flags & CM_SCACHESYNC_FETCHSTATUS)
- scp->flags &= ~CM_SCACHEFLAG_FETCHING;
- if (flags & CM_SCACHESYNC_STORESTATUS)
- scp->flags &= ~CM_SCACHEFLAG_STORING;
- if (flags & CM_SCACHESYNC_STORESIZE)
- scp->flags &= ~CM_SCACHEFLAG_SIZESTORING;
- if (flags & CM_SCACHESYNC_GETCALLBACK)
- scp->flags &= ~CM_SCACHEFLAG_GETCALLBACK;
- if (flags & CM_SCACHESYNC_STOREDATA_EXCL)
- scp->flags &= ~CM_SCACHEFLAG_DATASTORING;
- if (flags & CM_SCACHESYNC_ASYNCSTORE)
- scp->flags &= ~CM_SCACHEFLAG_ASYNCSTORING;
- if (flags & CM_SCACHESYNC_LOCK)
- scp->flags &= ~CM_SCACHEFLAG_LOCKING;
-
- /* now update the buffer pointer */
- if (flags & CM_SCACHESYNC_FETCHDATA) {
- /* 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)) {
- tbufp = osi_GetQData(qdp);
- if (tbufp == bufp) break;
- }
- osi_assert(qdp != NULL);
- osi_assert(osi_GetQData(qdp) == bufp);
- osi_QRemove((osi_queue_t **) &scp->bufReadsp, &qdp->q);
- osi_QDFree(qdp);
- if (bufp) {
- bufp->cmFlags &=
- ~(CM_BUF_CMFETCHING | CM_BUF_CMFULLYFETCHED);
- buf_Release(bufp);
- }
- }
-
- /* now update the buffer pointer */
- if (flags & CM_SCACHESYNC_STOREDATA) {
- /* 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)) {
- tbufp = osi_GetQData(qdp);
- if (tbufp == bufp) break;
- }
- osi_assert(qdp != NULL);
- osi_assert(osi_GetQData(qdp) == bufp);
- osi_QRemove((osi_queue_t **) &scp->bufWritesp, &qdp->q);
- osi_QDFree(qdp);
- if (bufp) {
- bufp->cmFlags &= ~CM_BUF_CMSTORING;
- buf_Release(bufp);
- }
+ osi_queueData_t *qdp;
+ cm_buf_t *tbufp;
+
+ /* now, update the recorded state for RPC-type calls */
+ if (flags & CM_SCACHESYNC_FETCHSTATUS)
+ scp->flags &= ~CM_SCACHEFLAG_FETCHING;
+ if (flags & CM_SCACHESYNC_STORESTATUS)
+ scp->flags &= ~CM_SCACHEFLAG_STORING;
+ if (flags & CM_SCACHESYNC_STORESIZE)
+ scp->flags &= ~CM_SCACHEFLAG_SIZESTORING;
+ if (flags & CM_SCACHESYNC_GETCALLBACK)
+ scp->flags &= ~CM_SCACHEFLAG_GETCALLBACK;
+ if (flags & CM_SCACHESYNC_STOREDATA_EXCL)
+ scp->flags &= ~CM_SCACHEFLAG_DATASTORING;
+ if (flags & CM_SCACHESYNC_ASYNCSTORE)
+ scp->flags &= ~CM_SCACHEFLAG_ASYNCSTORING;
+ if (flags & CM_SCACHESYNC_LOCK)
+ scp->flags &= ~CM_SCACHEFLAG_LOCKING;
+
+ /* now update the buffer pointer */
+ if (flags & CM_SCACHESYNC_FETCHDATA) {
+ /* 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)) {
+ tbufp = osi_GetQData(qdp);
+ if (tbufp == bufp) break;
}
-
- /* and wakeup anyone who is waiting */
- if (scp->flags & CM_SCACHEFLAG_WAITING) {
- scp->flags &= ~CM_SCACHEFLAG_WAITING;
- osi_Wakeup((long) &scp->flags);
+ osi_assert(qdp != NULL);
+ osi_assert(osi_GetQData(qdp) == bufp);
+ osi_QRemove((osi_queue_t **) &scp->bufReadsp, &qdp->q);
+ osi_QDFree(qdp);
+ if (bufp) {
+ bufp->cmFlags &=
+ ~(CM_BUF_CMFETCHING | CM_BUF_CMFULLYFETCHED);
+ buf_Release(bufp);
}
-}
+ }
+
+ /* now update the buffer pointer */
+ if (flags & CM_SCACHESYNC_STOREDATA) {
+ /* 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)) {
+ tbufp = osi_GetQData(qdp);
+ if (tbufp == bufp) break;
+ }
+ osi_assert(qdp != NULL);
+ osi_assert(osi_GetQData(qdp) == bufp);
+ osi_QRemove((osi_queue_t **) &scp->bufWritesp, &qdp->q);
+ osi_QDFree(qdp);
+ if (bufp) {
+ bufp->cmFlags &= ~CM_BUF_CMSTORING;
+ buf_Release(bufp);
+ }
+ }
+
+ /* and wakeup anyone who is waiting */
+ if (scp->flags & CM_SCACHEFLAG_WAITING) {
+ osi_Log1(afsd_logp, "CM SyncOp CM_SCACHEFLAG_WAITING reset for 0x%x", scp);
+ scp->flags &= ~CM_SCACHEFLAG_WAITING;
+ osi_Wakeup((long) &scp->flags);
+ }
+}
/* merge in a response from an RPC. The scp must be locked, and the callback
* is optional.
* started before that, can cause old info to be merged from the first call.
*/
void cm_MergeStatus(cm_scache_t *scp, AFSFetchStatus *statusp, AFSVolSync *volp,
- cm_user_t *userp, int flags)
+ cm_user_t *userp, int flags)
{
- // yj: i want to create some fake status for the /afs directory and the
- // entries under that directory
+ // 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_rootSCachep) {
- statusp->InterfaceVersion = 0x1;
- statusp->FileType = 0x2;
- statusp->LinkCount = scp->linkCount;
- statusp->Length = cm_fakeDirSize;
- statusp->DataVersion = cm_fakeDirVersion;
- statusp->Author = 0x1;
- statusp->Owner = 0x0;
- statusp->CallerAccess = 0x9;
- statusp->AnonymousAccess = 0x9;
- statusp->UnixModeBits = 0x1ff;
- statusp->ParentVnode = 0x1;
- statusp->ParentUnique = 0x1;
- statusp->ResidencyMask = 0;
- statusp->ClientModTime = 0x3b49f6e2;
- statusp->ServerModTime = 0x3b49f6e2;
- statusp->Group = 0;
- statusp->SyncCounter = 0;
- statusp->dataVersionHigh = 0;
- }
+ if (cm_freelanceEnabled && scp == cm_rootSCachep) {
+ osi_Log0(afsd_logp,"cm_MergeStatus Freelance cm_rootSCachep");
+ statusp->InterfaceVersion = 0x1;
+ statusp->FileType = CM_SCACHETYPE_DIRECTORY;
+ statusp->LinkCount = scp->linkCount;
+ statusp->Length = cm_fakeDirSize;
+ statusp->DataVersion = cm_fakeDirVersion;
+ statusp->Author = 0x1;
+ statusp->Owner = 0x0;
+ statusp->CallerAccess = 0x9;
+ statusp->AnonymousAccess = 0x9;
+ statusp->UnixModeBits = 0x1ff;
+ statusp->ParentVnode = 0x1;
+ statusp->ParentUnique = 0x1;
+ statusp->ResidencyMask = 0;
+ statusp->ClientModTime = FakeFreelanceModTime;
+ statusp->ServerModTime = FakeFreelanceModTime;
+ statusp->Group = 0;
+ statusp->SyncCounter = 0;
+ statusp->dataVersionHigh = 0;
+ }
#endif /* AFS_FREELANCE_CLIENT */
- if (!(flags & CM_MERGEFLAG_FORCE)
- && statusp->DataVersion < (unsigned long) scp->dataVersion) {
- struct cm_cell *cellp;
- struct cm_volume *volp;
-
- cellp = cm_FindCellByID(scp->fid.cell);
- cm_GetVolumeByID(cellp, scp->fid.volume, userp,
- (cm_req_t *) NULL, &volp);
- if (scp->cbServerp)
- osi_Log2(afsd_logp, "old data from server %x volume %s",
- scp->cbServerp->addr.sin_addr.s_addr,
- volp->namep);
- osi_Log3(afsd_logp, "Bad merge, scp %x, scp dv %d, RPC dv %d",
- scp, scp->dataVersion, statusp->DataVersion);
- /* we have a number of data fetch/store operations running
- * concurrently, and we can tell which one executed last at the
- * server by its mtime.
- * Choose the one with the largest mtime, and ignore the rest.
- *
- * These concurrent calls are incompatible with setting the
- * mtime, so we won't have a locally changed mtime here.
- *
- * We could also have ACL info for a different user than usual,
- * in which case we have to do that part of the merge, anyway.
- * We won't have to worry about the info being old, since we
- * won't have concurrent calls
- * that change file status running from this machine.
- *
- * Added 3/17/98: if we see data version regression on an RO
- * file, it's probably due to a server holding an out-of-date
- * replica, rather than to concurrent RPC's. Failures to
- * release replicas are now flagged by the volserver, but only
- * since AFS 3.4 5.22, so there are plenty of clients getting
- * out-of-date replicas out there.
- *
- * If we discover an out-of-date replica, by this time it's too
- * late to go to another server and retry. Also, we can't
- * reject the merge, because then there is no way for
- * GetAccess to do its work, and the caller gets into an
- * infinite loop. So we just grin and bear it.
- */
- if (!(scp->flags & CM_SCACHEFLAG_RO))
- return;
- }
- scp->serverModTime = statusp->ServerModTime;
-
- if (!(scp->mask & CM_SCACHEMASK_CLIENTMODTIME)) {
- scp->clientModTime = statusp->ClientModTime;
- }
- if (!(scp->mask & CM_SCACHEMASK_LENGTH)) {
- scp->length.LowPart = statusp->Length;
- scp->length.HighPart = 0;
- }
-
- scp->serverLength.LowPart = statusp->Length;
- scp->serverLength.HighPart = 0;
-
- scp->linkCount = statusp->LinkCount;
- scp->dataVersion = statusp->DataVersion;
- scp->owner = statusp->Owner;
- scp->group = statusp->Group;
- scp->unixModeBits = statusp->UnixModeBits & 07777;
-
- if (statusp->FileType == File)
- scp->fileType = CM_SCACHETYPE_FILE;
- else if (statusp->FileType == Directory)
- scp->fileType = CM_SCACHETYPE_DIRECTORY;
- else if (statusp->FileType == SymbolicLink) {
- if ((scp->unixModeBits & 0111) == 0)
- scp->fileType = CM_SCACHETYPE_MOUNTPOINT;
- else
- scp->fileType = CM_SCACHETYPE_SYMLINK;
- }
- else scp->fileType = 0; /* invalid */
-
- /* and other stuff */
- scp->parentVnode = statusp->ParentVnode;
- scp->parentUnique = statusp->ParentUnique;
-
- /* and merge in the private acl cache info, if this is more than the public
- * info; merge in the public stuff in any case.
+ if (!(flags & CM_MERGEFLAG_FORCE)
+ && statusp->DataVersion < (unsigned long) scp->dataVersion) {
+ struct cm_cell *cellp;
+ struct cm_volume *volp;
+
+ cellp = cm_FindCellByID(scp->fid.cell);
+ cm_GetVolumeByID(cellp, scp->fid.volume, userp,
+ (cm_req_t *) NULL, &volp);
+ if (scp->cbServerp)
+ osi_Log2(afsd_logp, "old data from server %x volume %s",
+ scp->cbServerp->addr.sin_addr.s_addr,
+ volp->namep);
+ osi_Log3(afsd_logp, "Bad merge, scp %x, scp dv %d, RPC dv %d",
+ scp, scp->dataVersion, statusp->DataVersion);
+ /* we have a number of data fetch/store operations running
+ * concurrently, and we can tell which one executed last at the
+ * server by its mtime.
+ * Choose the one with the largest mtime, and ignore the rest.
+ *
+ * These concurrent calls are incompatible with setting the
+ * mtime, so we won't have a locally changed mtime here.
+ *
+ * We could also have ACL info for a different user than usual,
+ * in which case we have to do that part of the merge, anyway.
+ * We won't have to worry about the info being old, since we
+ * won't have concurrent calls
+ * that change file status running from this machine.
+ *
+ * Added 3/17/98: if we see data version regression on an RO
+ * file, it's probably due to a server holding an out-of-date
+ * replica, rather than to concurrent RPC's. Failures to
+ * release replicas are now flagged by the volserver, but only
+ * since AFS 3.4 5.22, so there are plenty of clients getting
+ * out-of-date replicas out there.
+ *
+ * If we discover an out-of-date replica, by this time it's too
+ * late to go to another server and retry. Also, we can't
+ * reject the merge, because then there is no way for
+ * GetAccess to do its work, and the caller gets into an
+ * infinite loop. So we just grin and bear it.
*/
- scp->anyAccess = statusp->AnonymousAccess;
+ if (!(scp->flags & CM_SCACHEFLAG_RO))
+ return;
+ }
+ scp->serverModTime = statusp->ServerModTime;
- if (userp != NULL) {
- cm_AddACLCache(scp, userp, statusp->CallerAccess);
- }
+ if (!(scp->mask & CM_SCACHEMASK_CLIENTMODTIME)) {
+ scp->clientModTime = statusp->ClientModTime;
+ }
+ if (!(scp->mask & CM_SCACHEMASK_LENGTH)) {
+ scp->length.LowPart = statusp->Length;
+ scp->length.HighPart = 0;
+ }
+
+ scp->serverLength.LowPart = statusp->Length;
+ scp->serverLength.HighPart = 0;
+
+ scp->linkCount = statusp->LinkCount;
+ scp->dataVersion = statusp->DataVersion;
+ scp->owner = statusp->Owner;
+ scp->group = statusp->Group;
+ scp->unixModeBits = statusp->UnixModeBits & 07777;
+
+ if (statusp->FileType == File)
+ scp->fileType = CM_SCACHETYPE_FILE;
+ else if (statusp->FileType == Directory)
+ scp->fileType = CM_SCACHETYPE_DIRECTORY;
+ else if (statusp->FileType == SymbolicLink) {
+ if ((scp->unixModeBits & 0111) == 0)
+ scp->fileType = CM_SCACHETYPE_MOUNTPOINT;
+ else
+ scp->fileType = CM_SCACHETYPE_SYMLINK;
+ }
+ else {
+ osi_Log1(afsd_logp, "Merge, Invalid File Type, scp %x", scp);
+ scp->fileType = 0; /* invalid */
+ }
+ /* and other stuff */
+ scp->parentVnode = statusp->ParentVnode;
+ scp->parentUnique = statusp->ParentUnique;
+
+ /* and merge in the private acl cache info, if this is more than the public
+ * info; merge in the public stuff in any case.
+ */
+ scp->anyAccess = statusp->AnonymousAccess;
+
+ if (userp != NULL) {
+ cm_AddACLCache(scp, userp, statusp->CallerAccess);
+ }
}
/* note that our stat cache info is incorrect, so force us eventually
*/
void cm_DiscardSCache(cm_scache_t *scp)
{
- lock_AssertMutex(&scp->mx);
+ lock_AssertMutex(&scp->mx);
+ if (scp->cbServerp) {
+ cm_PutServer(scp->cbServerp);
scp->cbServerp = NULL;
- scp->cbExpires = 0;
- cm_dnlcPurgedp(scp);
- cm_FreeAllACLEnts(scp);
+ }
+ scp->cbExpires = 0;
+ cm_dnlcPurgedp(scp);
+ cm_FreeAllACLEnts(scp);
}
void cm_AFSFidFromFid(AFSFid *afsFidp, cm_fid_t *fidp)
{
- afsFidp->Volume = fidp->volume;
- afsFidp->Vnode = fidp->vnode;
- afsFidp->Unique = fidp->unique;
+ afsFidp->Volume = fidp->volume;
+ afsFidp->Vnode = fidp->vnode;
+ afsFidp->Unique = fidp->unique;
+}
+
+void cm_HoldSCacheNoLock(cm_scache_t *scp)
+{
+#ifdef NOLOCK_ASSERT
+ osi_assert(scp->refCount >= 0);
+#endif
+ scp->refCount++;
}
void cm_HoldSCache(cm_scache_t *scp)
{
- lock_ObtainWrite(&cm_scacheLock);
- osi_assert(scp->refCount > 0);
- scp->refCount++;
- lock_ReleaseWrite(&cm_scacheLock);
+ lock_ObtainWrite(&cm_scacheLock);
+ osi_assert(scp->refCount >= 0);
+ scp->refCount++;
+ lock_ReleaseWrite(&cm_scacheLock);
+}
+
+void cm_ReleaseSCacheNoLock(cm_scache_t *scp)
+{
+ osi_assert(scp->refCount-- > 0);
}
void cm_ReleaseSCache(cm_scache_t *scp)
{
- lock_ObtainWrite(&cm_scacheLock);
- osi_assert(scp->refCount-- > 0);
- lock_ReleaseWrite(&cm_scacheLock);
+ lock_ObtainWrite(&cm_scacheLock);
+ osi_assert(scp->refCount-- > 0);
+ lock_ReleaseWrite(&cm_scacheLock);
}
/* just look for the scp entry to get filetype */
/* doesn't need to be perfectly accurate, so locking doesn't matter too much */
int cm_FindFileType(cm_fid_t *fidp)
{
- long hash;
- cm_scache_t *scp;
+ long hash;
+ cm_scache_t *scp;
- hash = CM_SCACHE_HASH(fidp);
+ hash = CM_SCACHE_HASH(fidp);
- osi_assert(fidp->cell != 0);
+ osi_assert(fidp->cell != 0);
- lock_ObtainWrite(&cm_scacheLock);
- for(scp=cm_hashTablep[hash]; scp; scp=scp->nextp) {
- if (cm_FidCmp(fidp, &scp->fid) == 0) {
- /*scp->refCount++;*/
- /*cm_AdjustLRU(scp);*/
- lock_ReleaseWrite(&cm_scacheLock);
- return scp->fileType;
- }
+ lock_ObtainWrite(&cm_scacheLock);
+ for (scp=cm_hashTablep[hash]; scp; scp=scp->nextp) {
+ if (cm_FidCmp(fidp, &scp->fid) == 0) {
+ lock_ReleaseWrite(&cm_scacheLock);
+ return scp->fileType;
}
- lock_ReleaseWrite(&cm_scacheLock);
- return 0;
+ }
+ lock_ReleaseWrite(&cm_scacheLock);
+ return 0;
}
/* dump all scp's that have reference count > 0 to a file.
for (scp = cm_scacheLRULastp; scp; scp = (cm_scache_t *) osi_QPrev(&scp->q))
{
- if (scp->refCount != 0)
+ if (scp->refCount > 0)
{
- sprintf(output, "%s fid (cell=%d, volume=%d, vnode=%d, unique=%d) refCount=%d\n",
+ sprintf(output, "%s fid (cell=%d, volume=%d, vnode=%d, unique=%d) refCount=%u\n",
cookie, scp->fid.cell, scp->fid.volume, scp->fid.vnode, scp->fid.unique,
scp->refCount);
WriteFile(outputFile, output, strlen(output), &zilch, NULL);
{
if (scp)
{
- if (scp->refCount)
+ if (scp->refCount > 0)
{
- sprintf(output, "%s scp=0x%08X, hash=%d, fid (cell=%d, volume=%d, vnode=%d, unique=%d) refCount=%d\n",
+ sprintf(output, "%s scp=0x%08X, hash=%d, fid (cell=%d, volume=%d, vnode=%d, unique=%d) refCount=%u\n",
cookie, (void *)scp, i, scp->fid.cell, scp->fid.volume, scp->fid.vnode,
scp->fid.unique, scp->refCount);
WriteFile(outputFile, output, strlen(output), &zilch, NULL);
git://git.openafs.org / openafs.git / blobdiff