* directory or online at http://www.openafs.org/dl/license10.html
*/
+#include <afsconfig.h>
#include <afs/param.h>
+#include <roken.h>
+
#include <afs/afs_args.h>
#include <afs/stds.h>
#include <WINNT/syscfg.h>
#include <WINNT/afsreg.h>
-/*extern void afsi_log(char *pattern, ...);*/
+int
+SRXAFSCB_InitCallBackState3(struct rx_call *callp, afsUUID* serverUuid);
/* read/write lock for all global storage in this module */
osi_rwlock_t cm_callbackLock;
cm_scache_t *scp;
long hash;
- /* don't bother setting cell, since we won't be checking it (to aid
- * in working with multi-homed servers: we don't know the cell if we
- * don't recognize the IP address).
- */
- tfid.cell = 0;
+ tfid.cell = cellp ? cellp->cellID : 0;
tfid.volume = fidp->Volume;
tfid.vnode = fidp->Vnode;
tfid.unique = fidp->Unique;
scp->fid.vnode == tfid.vnode &&
scp->fid.unique == tfid.unique &&
(cellp == NULL || scp->fid.cell == cellp->cellID) &&
- scp->cbExpires > 0 &&
- scp->cbServerp != NULL)
+ cm_HaveCallback(scp))
{
cm_HoldSCacheNoLock(scp);
lock_ReleaseWrite(&cm_scacheLock);
fidp->Volume, fidp->Vnode, fidp->Unique);
}
+static __inline void
+cm_callbackDiscardROVolumeByFID(cm_fid_t *fidp)
+{
+ cm_volume_t *volp = cm_GetVolumeByFID(fidp);
+ if (volp) {
+ cm_PutVolume(volp);
+ if (volp->cbExpiresRO) {
+ volp->cbExpiresRO = 0;
+ if (volp->cbServerpRO) {
+ cm_PutServer(volp->cbServerpRO);
+ volp->cbServerpRO = NULL;
+ }
+ volp->creationDateRO = 0;
+ }
+ }
+}
+
/* called to revoke a volume callback, which is typically issued when a volume
* is moved from one server to another.
*
* it could complete while we're doing the scan below, and get missed
* by both the scan and by this code.
*/
- tfid.cell = tfid.vnode = tfid.unique = 0;
+ tfid.cell = cellp ? cellp->cellID : 0;
tfid.volume = fidp->Volume;
+ tfid.vnode = tfid.unique = 0;
+
cm_RecordRacingRevoke(&tfid, CM_RACINGFLAG_CANCELVOL);
lock_ObtainWrite(&cm_scacheLock);
cm_CallbackNotifyChange(scp);
lock_ObtainWrite(&cm_scacheLock);
cm_ReleaseSCacheNoLock(scp);
- if (scp->flags & CM_SCACHEFLAG_PURERO) {
- cm_volume_t *volp = cm_GetVolumeByFID(&scp->fid);
- if (volp) {
- volp->cbExpiresRO = 0;
- cm_PutVolume(volp);
- }
- }
+ if (scp->flags & CM_SCACHEFLAG_PURERO)
+ cm_callbackDiscardROVolumeByFID(&scp->fid);
}
} /* search one hash bucket */
} /* search all hash buckets */
host = rx_HostOf(peerp);
port = rx_PortOf(peerp);
- tsp = cm_FindServerByIP(host, CM_SERVER_FILE);
- if (tsp)
+ tsp = cm_FindServerByIP(host, port, CM_SERVER_FILE);
+ if (tsp) {
cellp = tsp->cellp;
+ cm_PutServer(tsp);
+ }
if (!cellp)
osi_Log2(afsd_logp, "SRXAFSCB_CallBack from host 0x%x port %d",
int
SRXAFSCB_InitCallBackState(struct rx_call *callp)
{
- struct sockaddr_in taddr;
- cm_server_t *tsp;
- cm_scache_t *scp;
- afs_uint32 hash;
- int discarded;
- struct rx_connection *connp;
- struct rx_peer *peerp;
- unsigned long host = 0;
- unsigned short port = 0;
-
if (cm_shutdown)
return 1;
- if ((connp = rx_ConnectionOf(callp)) && (peerp = rx_PeerOf(connp))) {
- host = rx_HostOf(peerp);
- port = rx_PortOf(peerp);
- }
-
- osi_Log2(afsd_logp, "SRXAFSCB_InitCallBackState from host 0x%x port %d",
- ntohl(host),
- ntohs(port));
-
- if ((rx_ConnectionOf(callp)) && (rx_PeerOf(rx_ConnectionOf(callp)))) {
- taddr.sin_family = AF_INET;
- taddr.sin_addr.s_addr = rx_HostOf(rx_PeerOf(rx_ConnectionOf(callp)));
-
- tsp = cm_FindServer(&taddr, CM_SERVER_FILE);
-
- osi_Log1(afsd_logp, "Init Callback State server %x", tsp);
-
- /* record the callback in the racing revokes structure. This
- * shouldn't be necessary, since we shouldn't be making callback
- * granting calls while we're going to get an initstate call,
- * but there probably are some obscure races, so better safe
- * than sorry.
- *
- * We do this first since we don't hold the cm_scacheLock and vnode
- * locks over the entire callback scan operation below. The
- * big loop below is guaranteed to hit any callback already
- * processed. The call to RecordRacingRevoke is guaranteed
- * to kill any callback that is currently being returned.
- * Anything that sneaks past both must start
- * after the call to RecordRacingRevoke.
- */
- cm_RecordRacingRevoke(NULL, CM_RACINGFLAG_CANCELALL);
-
- /* now search all vnodes looking for guys with this callback, if we
- * found it, or guys with any callbacks, if we didn't find the server
- * (that's how multihomed machines will appear and how we'll handle
- * them, albeit a little inefficiently). That is, we're discarding all
- * callbacks from all hosts if we get an initstate call from an unknown
- * host. Since these calls are rare, and multihomed servers
- * are "rare," hopefully this won't be a problem.
- */
- lock_ObtainWrite(&cm_scacheLock);
- for (hash = 0; hash < cm_data.scacheHashTableSize; hash++) {
- for (scp=cm_data.scacheHashTablep[hash]; scp; scp=scp->nextp) {
- cm_HoldSCacheNoLock(scp);
- lock_ReleaseWrite(&cm_scacheLock);
- lock_ObtainWrite(&scp->rw);
- discarded = 0;
- if (scp->cbExpires > 0 && scp->cbServerp != NULL) {
- /* we have a callback, now decide if we should clear it */
- if (scp->cbServerp == tsp || tsp == NULL) {
- osi_Log4(afsd_logp, "InitCallbackState Discarding SCache scp 0x%p vol %u vn %u uniq %u",
- scp, scp->fid.volume, scp->fid.vnode, scp->fid.unique);
- cm_DiscardSCache(scp);
- discarded = 1;
- }
- }
- lock_ReleaseWrite(&scp->rw);
- if (discarded)
- cm_CallbackNotifyChange(scp);
- lock_ObtainWrite(&cm_scacheLock);
- cm_ReleaseSCacheNoLock(scp);
-
- if (discarded && (scp->flags & CM_SCACHEFLAG_PURERO)) {
- cm_volume_t *volp = cm_GetVolumeByFID(&scp->fid);
- if (volp) {
- if (volp->cbExpiresRO != 0)
- volp->cbExpiresRO = 0;
- cm_PutVolume(volp);
- }
- }
-
- } /* search one hash bucket */
- } /* search all hash buckets */
-
- lock_ReleaseWrite(&cm_scacheLock);
-
- if (tsp) {
- /* reset the No flags on the server */
- cm_SetServerNo64Bit(tsp, 0);
- cm_SetServerNoInlineBulk(tsp, 0);
+ osi_Log0(afsd_logp, "SRXAFSCB_InitCallBackState ->");
- /* we're done with the server structure */
- cm_PutServer(tsp);
- }
- }
- return 0;
+ return SRXAFSCB_InitCallBackState3(callp, NULL);
}
/*------------------------------------------------------------------------
cep->lock.pid_last_reader = 0;
cep->lock.pid_writer = 0;
cep->lock.src_indicator = 0;
-#if !defined(AFS_64BIT_ENV)
- cep->Length.high = scp->length.HighPart;
- cep->Length.low = scp->length.LowPart;
-#else
cep->Length = (afs_int64) scp->length.QuadPart;
-#endif
cep->DataVersion = (afs_uint32)(scp->dataVersion & 0xFFFFFFFF);
cep->callback = afs_data_pointer_to_int32(scp->cbServerp);
if (scp->flags & CM_SCACHEFLAG_PURERO) {
osi_Log0(afsd_logp, "SRXAFSCB_InitCallBackState2 ->");
- return SRXAFSCB_InitCallBackState(callp);
+ return SRXAFSCB_InitCallBackState3(callp, NULL);
}
/* debug interface */
{
char *p = NULL;
+ struct sockaddr_in taddr;
+ cm_server_t *tsp = NULL;
+ cm_scache_t *scp = NULL;
+ cm_cell_t* cellp = NULL;
+ afs_uint32 hash;
+ int discarded;
+ struct rx_connection *connp;
+ struct rx_peer *peerp;
+ unsigned long host = 0;
+ unsigned short port = 0;
+
if (cm_shutdown)
return 1;
- if (UuidToString((UUID *)serverUuid, &p) == RPC_S_OK) {
- osi_Log1(afsd_logp, "SRXAFSCB_InitCallBackState3 %s ->",osi_LogSaveString(afsd_logp,p));
- RpcStringFree(&p);
- } else
- osi_Log0(afsd_logp, "SRXAFSCB_InitCallBackState3 - no server Uuid ->");
+ if ((connp = rx_ConnectionOf(callp)) && (peerp = rx_PeerOf(connp))) {
+ host = rx_HostOf(peerp);
+ port = rx_PortOf(peerp);
+
+ if (serverUuid) {
+ if (UuidToString((UUID *)serverUuid, &p) == RPC_S_OK) {
+ osi_Log1(afsd_logp, "SRXAFSCB_InitCallBackState3 Uuid%s ->",osi_LogSaveString(afsd_logp,p));
+ RpcStringFree(&p);
+ }
+
+ tsp = cm_FindServerByUuid(serverUuid, CM_SERVER_FILE);
+ }
+ if (!tsp)
+ tsp = cm_FindServerByIP(host, port, CM_SERVER_FILE);
+ if (tsp) {
+ cellp = tsp->cellp;
+ cm_PutServer(tsp);
+ }
+
+ if (!cellp)
+ osi_Log2(afsd_logp, "SRXAFSCB_InitCallBackState3 from host 0x%x port %d",
+ ntohl(host),
+ ntohs(port));
+ else
+ osi_Log3(afsd_logp, "SRXAFSCB_InitCallBackState3 from host 0x%x port %d for cell %s",
+ ntohl(host),
+ ntohs(port),
+ cellp->name /* does not need to be saved, doesn't change */);
+ } else {
+ osi_Log0(afsd_logp, "SRXAFSCB_InitCallBackState3 from unknown host");
+ }
+
+ if (connp && peerp) {
+ taddr.sin_family = AF_INET;
+ taddr.sin_addr.s_addr = rx_HostOf(rx_PeerOf(rx_ConnectionOf(callp)));
+ taddr.sin_port = rx_PortOf(rx_PeerOf(rx_ConnectionOf(callp)));
+
+ tsp = cm_FindServer(&taddr, CM_SERVER_FILE);
+
+ osi_Log1(afsd_logp, "InitCallbackState3 server %x", tsp);
+
+ /* record the callback in the racing revokes structure. This
+ * shouldn't be necessary, since we shouldn't be making callback
+ * granting calls while we're going to get an initstate call,
+ * but there probably are some obscure races, so better safe
+ * than sorry.
+ *
+ * We do this first since we don't hold the cm_scacheLock and vnode
+ * locks over the entire callback scan operation below. The
+ * big loop below is guaranteed to hit any callback already
+ * processed. The call to RecordRacingRevoke is guaranteed
+ * to kill any callback that is currently being returned.
+ * Anything that sneaks past both must start
+ * after the call to RecordRacingRevoke.
+ */
+ if (cellp) {
+ cm_fid_t fid;
+
+ fid.cell = cellp->cellID;
+ fid.volume = fid.vnode = fid.unique = 0;
+
+ cm_RecordRacingRevoke(&fid, CM_RACINGFLAG_CANCELALL);
+ } else {
+ cm_RecordRacingRevoke(NULL, CM_RACINGFLAG_CANCELALL);
+ }
+
+ /* now search all vnodes looking for guys with this callback, if we
+ * found it, or guys with any callbacks, if we didn't find the server
+ * (that's how multihomed machines will appear and how we'll handle
+ * them, albeit a little inefficiently). That is, we're discarding all
+ * callbacks from all hosts if we get an initstate call from an unknown
+ * host. Since these calls are rare, and multihomed servers
+ * are "rare," hopefully this won't be a problem.
+ */
+ lock_ObtainWrite(&cm_scacheLock);
+ for (hash = 0; hash < cm_data.scacheHashTableSize; hash++) {
+ for (scp=cm_data.scacheHashTablep[hash]; scp; scp=scp->nextp) {
+ cm_HoldSCacheNoLock(scp);
+ lock_ReleaseWrite(&cm_scacheLock);
+ lock_ObtainWrite(&scp->rw);
+ discarded = 0;
+ if (scp->cbExpires > 0 && scp->cbServerp != NULL) {
+ /* we have a callback, now decide if we should clear it */
+ if (cm_ServerEqual(scp->cbServerp, tsp)) {
+ osi_Log4(afsd_logp, "InitCallbackState3 Discarding SCache scp 0x%p vol %u vn %u uniq %u",
+ scp, scp->fid.volume, scp->fid.vnode, scp->fid.unique);
+ cm_DiscardSCache(scp);
+ discarded = 1;
+ }
+ }
+ lock_ReleaseWrite(&scp->rw);
+ if (discarded)
+ cm_CallbackNotifyChange(scp);
+ lock_ObtainWrite(&cm_scacheLock);
+ cm_ReleaseSCacheNoLock(scp);
+
+ if (discarded && (scp->flags & CM_SCACHEFLAG_PURERO))
+ cm_callbackDiscardROVolumeByFID(&scp->fid);
- return SRXAFSCB_InitCallBackState(callp);
+ } /* search one hash bucket */
+ } /* search all hash buckets */
+
+ lock_ReleaseWrite(&cm_scacheLock);
+
+ if (tsp) {
+ /* reset the No flags on the server */
+ cm_SetServerNo64Bit(tsp, 0);
+ cm_SetServerNoInlineBulk(tsp, 0);
+
+ /* we're done with the server structure */
+ cm_PutServer(tsp);
+ }
+ }
+ return 0;
}
/* debug interface */
sn++, serverRefp = serverRefp->next);
a_hosts->serverList_len = sn;
- a_hosts->serverList_val = (afs_int32 *)osi_Alloc(sn * sizeof(afs_int32));
+ a_hosts->serverList_val = (afs_int32 *)xdr_alloc(sn * sizeof(afs_int32));
for ( sn = 0, serverRefp = cellp->vlServersp;
sn < AFSMAXCELLHOSTS && serverRefp;
Capabilities * capabilities)
{
int i;
- afs_int32 *dataBuffP;
+ afs_uint32 *dataBuffP;
afs_int32 dataBytes;
long code;
struct rx_connection *connp;
}
lock_ReleaseRead(&cm_syscfgLock);
- dataBytes = 1 * sizeof(afs_int32);
- dataBuffP = (afs_int32 *) osi_Alloc(dataBytes);
+ dataBytes = 1 * sizeof(afs_uint32);
+ dataBuffP = (afs_uint32 *) xdr_alloc(dataBytes);
dataBuffP[0] = CLIENT_CAPABILITY_ERRORTRANS;
- capabilities->Capabilities_len = dataBytes / sizeof(afs_int32);
+ capabilities->Capabilities_len = dataBytes / sizeof(afs_uint32);
capabilities->Capabilities_val = dataBuffP;
return 0;
if (cm_data.rootCellp) {
t_name = strdup(cm_data.rootCellp->name);
} else {
- t_name = (char *)malloc(1);
+ t_name = (char *)xdr_alloc(1);
t_name[0] = '\0';
}
*a_name = t_name;
* Currently only support version 1
*/
allocsize = sizeof(cm_initparams_v1);
- t_config = (afs_uint32 *)malloc(allocsize);
+ t_config = (afs_uint32 *)xdr_alloc(allocsize);
afs_MarshallCacheConfig(callerVersion, &cm_initParams, t_config);
int cm_HaveCallback(cm_scache_t *scp)
{
#ifdef AFS_FREELANCE_CLIENT
- // yj: we handle callbacks specially for callbacks on the root directory
- // Since it's local, we almost always say that we have callback on it
- // The only time we send back a 0 is if we're need to initialize or
- // reinitialize the fake directory
-
- // There are 2 state variables cm_fakeGettingCallback and cm_fakeDirCallback
- // cm_fakeGettingCallback is 1 if we're in the process of initialization and
- // hence should return false. it's 0 otherwise
- // cm_fakeDirCallback is 0 if we haven't loaded the fake directory, it's 1
- // if the fake directory is loaded and this is the first time cm_HaveCallback
- // is called since then. We return false in this case to allow cm_GetCallback
- // to be called because cm_GetCallback has some initialization work to do.
- // If cm_fakeDirCallback is 2, then it means that the fake directory is in
- // good shape and we simply return true, provided no change is detected.
- int fdc, fgc;
-
if (cm_freelanceEnabled &&
- scp->fid.cell==AFS_FAKE_ROOT_CELL_ID && scp->fid.volume==AFS_FAKE_ROOT_VOL_ID) {
- lock_ObtainMutex(&cm_Freelance_Lock);
- fdc = cm_fakeDirCallback;
- fgc = cm_fakeGettingCallback;
- lock_ReleaseMutex(&cm_Freelance_Lock);
-
- if (fdc==1) { // first call since init
- return 0;
- } else if (fdc==2 && !fgc) { // we're in good shape
- if (cm_getLocalMountPointChange()) { // check for changes
- cm_clearLocalMountPointChange(); // clear the changefile
- lock_ReleaseWrite(&scp->rw); // this is re-locked in reInitLocalMountPoints
- cm_reInitLocalMountPoints(); // start reinit
- lock_ObtainWrite(&scp->rw); // now get the lock back
- return 0;
- }
- return 1; // no change
+ scp->fid.cell==AFS_FAKE_ROOT_CELL_ID &&
+ scp->fid.volume==AFS_FAKE_ROOT_VOL_ID) {
+ if (cm_getLocalMountPointChange()) {
+ cm_clearLocalMountPointChange();
+ lock_ReleaseWrite(&scp->rw);
+ cm_reInitLocalMountPoints();
+ lock_ObtainWrite(&scp->rw);
}
- return 0;
+ return (cm_data.fakeDirVersion == scp->dataVersion);
}
#endif
-
- if (scp->cbServerp != NULL) {
- return 1;
- } else if (cm_OfflineROIsValid) {
+ if (cm_readonlyVolumeVersioning &&
+ (scp->flags & CM_SCACHEFLAG_PURERO)) {
cm_volume_t *volp = cm_GetVolumeByFID(&scp->fid);
if (volp) {
- switch (cm_GetVolumeStatus(volp, scp->fid.volume)) {
- case vl_offline:
- case vl_alldown:
- case vl_unknown:
- cm_PutVolume(volp);
- return 1;
- default:
- cm_PutVolume(volp);
- return 0;
+ int haveCB = 0;
+ if (cm_OfflineROIsValid) {
+ switch (cm_GetVolumeStatus(volp, scp->fid.volume)) {
+ case vl_offline:
+ case vl_alldown:
+ case vl_unknown:
+ haveCB = 1;
+ break;
+ }
+ }
+ if (!haveCB &&
+ volp->creationDateRO == scp->volumeCreationDate &&
+ volp->cbServerpRO != NULL) {
+ haveCB = 1;
}
+ cm_PutVolume(volp);
+ return haveCB;
}
- return 1;
}
- return 0;
+ if (scp->cbServerp != NULL)
+ return 1;
+ else
+ return 0;
}
/* need to detect a broken callback that races with our obtaining a callback.
* this locking hierarchy.
*/
void cm_EndCallbackGrantingCall(cm_scache_t *scp, cm_callbackRequest_t *cbrp,
- AFSCallBack *cbp, long flags)
+ AFSCallBack *cbp, AFSVolSync *volSyncp, long flags)
{
cm_racingRevokes_t *revp; /* where we are */
cm_racingRevokes_t *nrevp; /* where we'll be next */
/* record the callback; we'll clear it below if we really lose it */
if (cbrp) {
if (scp) {
- if (scp->cbServerp != cbrp->serverp) {
+ if (!cm_ServerEqual(scp->cbServerp, cbrp->serverp)) {
serverp = scp->cbServerp;
if (!freeFlag)
cm_GetServer(cbrp->serverp);
serverp = cbrp->serverp;
}
scp->cbExpires = cbrp->startTime + cbp->ExpirationTime;
- if (scp->flags & CM_SCACHEFLAG_PURERO) {
- cm_volume_t * volp = cm_GetVolumeByFID(&scp->fid);
- if (volp) {
- volp->cbExpiresRO = scp->cbExpires;
- cm_PutVolume(volp);
- }
- }
} else {
if (freeFlag)
serverp = cbrp->serverp;
((revp->flags & CM_RACINGFLAG_CANCELVOL) &&
scp->fid.volume == revp->fid.volume)
||
- (revp->flags & CM_RACINGFLAG_CANCELALL))) {
+ ((revp->flags & CM_RACINGFLAG_CANCELALL) &&
+ (revp->fid.cell == 0 || scp->fid.cell == revp->fid.cell)))) {
/* this one matches */
osi_Log4(afsd_logp,
"Racing revoke scp 0x%p old cbc %d rev cbc %d cur cbc %d",
cbrp->callbackCount, revp->callbackCount,
cm_callbackCount);
discardScp = 1;
- if ((scp->flags & CM_SCACHEFLAG_PURERO) &&
- (revp->flags & (CM_RACINGFLAG_CANCELVOL | CM_RACINGFLAG_CANCELALL))) {
- cm_volume_t *volp = cm_GetVolumeByFID(&scp->fid);
- if (volp) {
- volp->cbExpiresRO = 0;
- cm_PutVolume(volp);
- }
- }
+ if ((scp->flags & CM_SCACHEFLAG_PURERO) &&
+ (revp->flags & CM_RACINGFLAG_ALL))
+ cm_callbackDiscardROVolumeByFID(&scp->fid);
}
if (freeFlag)
free(revp);
lock_ReleaseWrite(&scp->rw);
cm_CallbackNotifyChange(scp);
lock_ObtainWrite(&scp->rw);
- }
+ } else {
+ if (scp && scp->flags & CM_SCACHEFLAG_PURERO) {
+ cm_volume_t * volp = cm_GetVolumeByFID(&scp->fid);
+ if (volp) {
+ if (volSyncp) {
+ lock_ObtainWrite(&cm_scacheLock);
+ volp->cbExpiresRO = scp->cbExpires;
+ volp->creationDateRO = volSyncp->spare1;
+ if (volp->cbServerpRO != scp->cbServerp) {
+ if (volp->cbServerpRO)
+ cm_PutServer(volp->cbServerpRO);
+ cm_GetServer(scp->cbServerp);
+ volp->cbServerpRO = scp->cbServerp;
+ }
+ lock_ReleaseWrite(&cm_scacheLock);
+ }
+ cm_PutVolume(volp);
+ }
+ }
+ }
if ( serverp ) {
lock_ObtainWrite(&cm_serverLock);
struct rx_connection * rxconnp = NULL;
int syncop_done = 0;
+ memset(&volSync, 0, sizeof(volSync));
+
osi_Log4(afsd_logp, "GetCallback scp 0x%p cell %d vol %d flags %lX",
scp, scp->fid.cell, scp->fid.volume, flags);
#ifdef AFS_FREELANCE_CLIENT
// The case where a callback is needed on /afs is handled
// specially. We need to fetch the status by calling
- // cm_MergeStatus and mark that cm_fakeDirCallback is 2
- if (cm_freelanceEnabled) {
- if (scp->fid.cell==AFS_FAKE_ROOT_CELL_ID &&
- scp->fid.volume==AFS_FAKE_ROOT_VOL_ID &&
- scp->fid.unique==0x1 &&
- scp->fid.vnode==0x1) {
-
- // Start by indicating that we're in the process
- // of fetching the callback
- lock_ObtainMutex(&cm_Freelance_Lock);
- osi_Log0(afsd_logp,"cm_getGetCallback fakeGettingCallback=1");
- cm_fakeGettingCallback = 1;
- lock_ReleaseMutex(&cm_Freelance_Lock);
-
- // Fetch the status info
- cm_MergeStatus(NULL, scp, &afsStatus, &volSync, userp, 0);
+ // cm_MergeStatus
+ if (cm_freelanceEnabled &&
+ (scp->fid.cell==AFS_FAKE_ROOT_CELL_ID &&
+ scp->fid.volume==AFS_FAKE_ROOT_VOL_ID)) {
- // Indicate that the callback is not done
- lock_ObtainMutex(&cm_Freelance_Lock);
- osi_Log0(afsd_logp,"cm_getGetCallback fakeDirCallback=2");
- cm_fakeDirCallback = 2;
-
- // Indicate that we're no longer fetching the callback
- osi_Log0(afsd_logp,"cm_getGetCallback fakeGettingCallback=0");
- cm_fakeGettingCallback = 0;
- lock_ReleaseMutex(&cm_Freelance_Lock);
+ code = cm_SyncOp(scp, NULL, userp, reqp, 0,
+ CM_SCACHESYNC_FETCHSTATUS | CM_SCACHESYNC_GETCALLBACK);
+ if (code)
+ goto done;
+ syncop_done = 1;
- return 0;
- }
+ if (scp->dataVersion != cm_data.fakeDirVersion) {
+ memset(&afsStatus, 0, sizeof(afsStatus));
+ memset(&volSync, 0, sizeof(volSync));
- if (scp->fid.cell==AFS_FAKE_ROOT_CELL_ID && scp->fid.volume==AFS_FAKE_ROOT_VOL_ID) {
- osi_Log0(afsd_logp,"cm_getcallback should NEVER EVER get here... ");
+ // Fetch the status info
+ cm_MergeStatus(NULL, scp, &afsStatus, &volSync, userp, reqp, 0);
}
+ goto done;
}
#endif /* AFS_FREELANCE_CLIENT */
lock_ObtainWrite(&scp->rw);
if (code == 0) {
- cm_EndCallbackGrantingCall(scp, &cbr, &callback, 0);
- cm_MergeStatus(NULL, scp, &afsStatus, &volSync, userp, 0);
+ cm_EndCallbackGrantingCall(scp, &cbr, &callback, &volSync, 0);
+ cm_MergeStatus(NULL, scp, &afsStatus, &volSync, userp, reqp, 0);
} else {
- cm_EndCallbackGrantingCall(NULL, &cbr, NULL, 0);
+ cm_EndCallbackGrantingCall(NULL, &cbr, NULL, NULL, 0);
}
/* if we got an error, return to caller */
break;
}
+ done:
if (syncop_done)
cm_SyncOpDone(scp, NULL, CM_SCACHESYNC_FETCHSTATUS | CM_SCACHESYNC_GETCALLBACK);
}
-/* called with cm_scacheLock held */
-long cm_CBServersUp(cm_scache_t *scp, time_t * downTime)
+/*
+ * cm_CBServersDownTime() returns 1 if the downTime parameter is valid.
+ *
+ * Servers with multiple interfaces have multiple cm_server_t objects
+ * which share the same UUID. If one interface is down but others are up,
+ * the server should not be considered down. The returned downTime should
+ * be the largest non-zero value if down or zero if up. If the cbServerp
+ * is down, it is updated to refer to an interface that is up (if one exists).
+ *
+ * called with cm_scacheLock held
+ */
+static long
+cm_CBServersDownTime(cm_scache_t *scp, cm_volume_t *volp, time_t * pdownTime)
{
cm_vol_state_t *statep;
- cm_volume_t * volp;
- afs_uint32 volID = scp->fid.volume;
cm_serverRef_t *tsrp;
- int found;
+ int alldown = 1;
+ time_t downTime = 0;
+ cm_server_t * upserver = NULL;
+ cm_server_t * downserver;
- *downTime = 0;
+ *pdownTime = 0;
if (scp->cbServerp == NULL)
return 1;
- volp = cm_GetVolumeByFID(&scp->fid);
- if (!volp)
+ if (!(scp->cbServerp->flags & CM_SERVERFLAG_DOWN))
return 1;
- statep = cm_VolumeStateByID(volp, volID);
- cm_PutVolume(volp);
- if (statep->state == vl_online)
- return 1;
+ statep = cm_VolumeStateByID(volp, scp->fid.volume);
+ if (statep) {
+ for (tsrp = statep->serversp; tsrp; tsrp=tsrp->next) {
+ if (tsrp->status == srv_deleted)
+ continue;
- for (found = 0,tsrp = statep->serversp; tsrp; tsrp=tsrp->next) {
- if (tsrp->status == srv_deleted)
- continue;
- if (tsrp->server == scp->cbServerp)
- found = 1;
- if (tsrp->server->downTime > *downTime)
- *downTime = tsrp->server->downTime;
+ if (!cm_ServerEqual(tsrp->server, scp->cbServerp))
+ continue;
+
+ if (!(tsrp->server->flags & CM_SERVERFLAG_DOWN)) {
+ alldown = 0;
+ if (!upserver) {
+ upserver = tsrp->server;
+ cm_GetServer(upserver);
+ }
+ }
+
+ if (tsrp->server->downTime > downTime)
+ downTime = tsrp->server->downTime;
+ }
+ } else {
+ downTime = scp->cbServerp->downTime;
}
/* if the cbServerp does not match the current volume server list
* we report the callback server as up so the callback can be
* expired.
*/
- return(found ? 0 : 1);
+
+ if (alldown) {
+ *pdownTime = downTime;
+ } else {
+ lock_ObtainWrite(&scp->rw);
+ downserver = scp->cbServerp;
+ scp->cbServerp = upserver;
+ lock_ReleaseWrite(&scp->rw);
+ cm_PutServer(downserver);
+ }
+ return 1;
}
/* called periodically by cm_daemon to shut down use of expired callbacks */
{
afs_uint32 i;
cm_scache_t *scp;
+ cm_volume_t *volp;
+ enum volstatus volstate;
time_t now, downTime;
osi_Log0(afsd_logp, "CheckCBExpiration");
lock_ObtainWrite(&cm_scacheLock);
for (i=0; i<cm_data.scacheHashTableSize; i++) {
for (scp = cm_data.scacheHashTablep[i]; scp; scp=scp->nextp) {
+ volp = NULL;
+ cm_HoldSCacheNoLock(scp);
+ lock_ReleaseWrite(&cm_scacheLock);
+
+ /*
+ * If this is not a PURERO object and there is no callback
+ * or it hasn't expired, there is nothing to do
+ */
+ if (!(scp->flags & CM_SCACHEFLAG_PURERO) &&
+ (scp->cbServerp == NULL || scp->cbExpires == 0 || now < scp->cbExpires))
+ goto scp_complete;
+
+ /*
+ * Determine the volume state and update the callback info
+ * to the latest if it is a PURERO object.
+ */
+ volp = cm_GetVolumeByFID(&scp->fid);
+ volstate = vl_unknown;
downTime = 0;
- if (scp->flags & CM_SCACHEFLAG_PURERO) {
- cm_volume_t *volp = cm_GetVolumeByFID(&scp->fid);
- if (volp) {
- if (volp->cbExpiresRO > scp->cbExpires && scp->cbExpires > 0)
- scp->cbExpires = volp->cbExpiresRO;
- cm_PutVolume(volp);
+ if (volp) {
+ if ((scp->flags & CM_SCACHEFLAG_PURERO) &&
+ volp->cbExpiresRO > scp->cbExpires && scp->cbExpires > 0)
+ {
+ lock_ObtainWrite(&scp->rw);
+ scp->cbExpires = volp->cbExpiresRO;
+ if (volp->cbServerpRO != scp->cbServerp) {
+ if (scp->cbServerp)
+ cm_PutServer(scp->cbServerp);
+ cm_GetServer(volp->cbServerpRO);
+ scp->cbServerp = volp->cbServerpRO;
+ }
+ lock_ReleaseWrite(&scp->rw);
}
+ volstate = cm_GetVolumeStatus(volp, scp->fid.volume);
}
- if (scp->cbServerp && scp->cbExpires > 0 && now > scp->cbExpires &&
- (cm_CBServersUp(scp, &downTime) || downTime == 0 || downTime >= scp->cbExpires))
- {
- cm_HoldSCacheNoLock(scp);
- lock_ReleaseWrite(&cm_scacheLock);
-
- osi_Log4(afsd_logp, "Callback Expiration Discarding SCache scp 0x%p vol %u vn %u uniq %u",
- scp, scp->fid.volume, scp->fid.vnode, scp->fid.unique);
- lock_ObtainWrite(&scp->rw);
- cm_DiscardSCache(scp);
- lock_ReleaseWrite(&scp->rw);
- cm_CallbackNotifyChange(scp);
- lock_ObtainWrite(&cm_scacheLock);
- cm_ReleaseSCacheNoLock(scp);
- }
+ /* If there is no callback or it hasn't expired, there is nothing to do */
+ if (scp->cbServerp == NULL || scp->cbExpires == 0 || now < scp->cbExpires)
+ goto scp_complete;
+
+ /* If the volume is known not to be online, do not expire the callback */
+ if (volstate != vl_online)
+ goto scp_complete;
+
+ /*
+ * If all the servers are down and the callback expired after the
+ * issuing server went down, do not expire the callback
+ */
+ if (cm_CBServersDownTime(scp, volp, &downTime) && downTime && downTime < scp->cbExpires)
+ goto scp_complete;
+
+ /* The callback has expired, discard the status info */
+ osi_Log4(afsd_logp, "Callback Expiration Discarding SCache scp 0x%p vol %u vn %u uniq %u",
+ scp, scp->fid.volume, scp->fid.vnode, scp->fid.unique);
+ lock_ObtainWrite(&scp->rw);
+ cm_DiscardSCache(scp);
+ lock_ReleaseWrite(&scp->rw);
+
+ cm_CallbackNotifyChange(scp);
+
+ scp_complete:
+ if (volp)
+ cm_PutVolume(volp);
+
+ lock_ObtainWrite(&cm_scacheLock);
+ cm_ReleaseSCacheNoLock(scp);
}
}
lock_ReleaseWrite(&cm_scacheLock);
lock_ReleaseWrite(&cm_serverLock);
}
+void
+cm_GiveUpAllCallbacksAllServersMulti(afs_int32 markDown)
+{
+ long code;
+ cm_conn_t **conns = NULL;
+ struct rx_connection **rxconns = NULL;
+ afs_int32 i, nconns = 0, maxconns;
+ cm_server_t ** serversp, *tsp;
+ afs_int32 *results;
+ time_t start, *deltas;
+
+ maxconns = cm_numFileServers;
+ if (maxconns == 0)
+ return;
+
+ conns = (cm_conn_t **)malloc(maxconns * sizeof(cm_conn_t *));
+ rxconns = (struct rx_connection **)malloc(maxconns * sizeof(struct rx_connection *));
+ deltas = (time_t *)malloc(maxconns * sizeof (time_t));
+ results = (afs_int32 *)malloc(maxconns * sizeof (afs_int32));
+ serversp = (cm_server_t **)malloc(maxconns * sizeof(cm_server_t *));
+
+ lock_ObtainRead(&cm_serverLock);
+ for (nconns=0, tsp = cm_allServersp; tsp && nconns < maxconns; tsp = tsp->allNextp) {
+ if (tsp->type != CM_SERVER_FILE ||
+ (tsp->flags & CM_SERVERFLAG_DOWN) ||
+ tsp->cellp == NULL /* SetPrefs only */)
+ continue;
+
+ cm_GetServerNoLock(tsp);
+ lock_ReleaseRead(&cm_serverLock);
+
+ serversp[nconns] = tsp;
+ code = cm_ConnByServer(tsp, cm_rootUserp, &conns[nconns]);
+ if (code) {
+ lock_ObtainRead(&cm_serverLock);
+ cm_PutServerNoLock(tsp);
+ continue;
+ }
+ lock_ObtainRead(&cm_serverLock);
+ rxconns[nconns] = cm_GetRxConn(conns[nconns]);
+ rx_SetConnDeadTime(rxconns[nconns], 10);
+
+ nconns++;
+ }
+ lock_ReleaseRead(&cm_serverLock);
+
+ if (nconns) {
+ /* Perform the multi call */
+ start = time(NULL);
+ multi_Rx(rxconns,nconns)
+ {
+ multi_RXAFS_GiveUpAllCallBacks();
+ results[multi_i]=multi_error;
+ } multi_End;
+ }
+
+ /* Process results of servers that support RXAFS_GetCapabilities */
+ for (i=0; i<nconns; i++) {
+ rx_SetConnDeadTime(rxconns[i], ConnDeadtimeout);
+ rx_PutConnection(rxconns[i]);
+ cm_PutConn(conns[i]);
+
+ tsp = serversp[i];
+ cm_GCConnections(tsp);
+
+ if (markDown) {
+ cm_server_vols_t * tsrvp;
+ cm_volume_t * volp;
+ int i;
+
+ cm_ForceNewConnections(tsp);
+
+ lock_ObtainMutex(&tsp->mx);
+ if (!(tsp->flags & CM_SERVERFLAG_DOWN)) {
+ tsp->flags |= CM_SERVERFLAG_DOWN;
+ tsp->downTime = time(NULL);
+ }
+ /* Now update the volume status */
+ for (tsrvp = tsp->vols; tsrvp; tsrvp = tsrvp->nextp) {
+ for (i=0; i<NUM_SERVER_VOLS; i++) {
+ if (tsrvp->ids[i] != 0) {
+ cm_req_t req;
+
+ cm_InitReq(&req);
+ lock_ReleaseMutex(&tsp->mx);
+ code = cm_FindVolumeByID(tsp->cellp, tsrvp->ids[i], cm_rootUserp,
+ &req, CM_GETVOL_FLAG_NO_LRU_UPDATE | CM_GETVOL_FLAG_NO_RESET, &volp);
+ lock_ObtainMutex(&tsp->mx);
+ if (code == 0) {
+ cm_UpdateVolumeStatus(volp, tsrvp->ids[i]);
+ cm_PutVolume(volp);
+ }
+ }
+ }
+ }
+ lock_ReleaseMutex(&tsp->mx);
+ }
+ }
+
+ free(conns);
+ free(rxconns);
+ free(deltas);
+ free(results);
+ free(serversp);
+}
+
git://git.openafs.org / openafs.git / blobdiff