/**
* Connects to a server by it's server address.
*
* @param sap Server address.
* @param aport Server port.
* @param acell
* @param tu Connect as this user.
* @param force_if_down
* @param create
* @param locktype Specifies type of lock to be used for this function.
*
* @return The new connection.
*/
struct afs_conn *
afs_ConnBySA(struct srvAddr *sap, unsigned short aport, afs_int32 acell,
struct unixuser *tu, int force_if_down, afs_int32 create,
afs_int32 locktype, struct rx_connection **rxconn)
{
int glocked, foundvec;
struct afs_conn *tc = NULL;
struct sa_conn_vector *tcv = NULL;
struct rx_securityClass *csec; /*Security class object */
int isec; /*Security index */
int service;
*rxconn = NULL;
/* find cached connection */
ObtainSharedLock(&afs_xconn, 15);
foundvec = 0;
for (tcv = sap->conns; tcv; tcv = tcv->next) {
if (tcv->user == tu && tcv->port == aport) {
/* return most eligible conn */
if (!foundvec)
foundvec = 1;
UpgradeSToWLock(&afs_xconn, 37);
tc = find_preferred_connection(tcv, create);
ConvertWToSLock(&afs_xconn);
break;
}
}
if (!tc && !create) {
/* Not found and can't create a new one. */
ReleaseSharedLock(&afs_xconn);
return NULL;
}
if (AFS_IS_DISCONNECTED && !AFS_IN_SYNC) {
afs_warnuser("afs_ConnBySA: disconnected\n");
ReleaseSharedLock(&afs_xconn);
return NULL;
}
if (!foundvec && create) {
/* No such connection vector exists. Create one and splice it in.
* Make sure the server record has been marked as used (for the purposes
* of calculating up & down times, it's now considered to be an
* ``active'' server). Also make sure the server's lastUpdateEvalTime
* gets set, marking the time of its ``birth''.
*/
UpgradeSToWLock(&afs_xconn, 37);
new_conn_vector(tcv);
tcv->user = tu;
tcv->port = aport;
tcv->srvr = sap;
tcv->next = sap->conns;
sap->conns = tcv;
/* all struct afs_conn ptrs come from here */
tc = find_preferred_connection(tcv, create);
afs_ActivateServer(sap);
ConvertWToSLock(&afs_xconn);
} /* end of if (!tcv) */
if (!tc) {
/* Not found and no alternatives. */
ReleaseSharedLock(&afs_xconn);
return NULL;
}
if (tu->states & UTokensBad) {
/* we may still have an authenticated RPC connection here,
* we'll have to create a new, unauthenticated, connection.
* Perhaps a better way to do this would be to set
* conn->forceConnectFS on all conns when the token first goes
* bad, but that's somewhat trickier, due to locking
* constraints (though not impossible).
*/
if (tc->id && (rx_SecurityClassOf(tc->id) != 0)) {
tc->forceConnectFS = 1; /* force recreation of connection */
}
tu->states &= ~UHasTokens; /* remove the authentication info */
}
glocked = ISAFS_GLOCK();
if (tc->forceConnectFS) {
UpgradeSToWLock(&afs_xconn, 38);
csec = (struct rx_securityClass *)0;
if (tc->id) {
if (glocked)
AFS_GUNLOCK();
rx_SetConnSecondsUntilNatPing(tc->id, 0);
rx_DestroyConnection(tc->id);
if (glocked)
AFS_GLOCK();
}
/*
* Stupid hack to determine if using vldb service or file system
* service.
*/
if (aport == sap->server->cell->vlport)
service = 52;
else
service = 1;
isec = 0;
csec = afs_pickSecurityObject(tc, &isec);
if (glocked)
AFS_GUNLOCK();
tc->id = rx_NewConnection(sap->sa_ip, aport, service, csec, isec);
if (glocked)
AFS_GLOCK();
if (service == 52) {
rx_SetConnHardDeadTime(tc->id, afs_rx_harddead);
}
/* set to a RX_CALL_TIMEOUT error to allow MTU retry to trigger */
rx_SetServerConnIdleDeadErr(tc->id, RX_CALL_DEAD);
rx_SetConnIdleDeadTime(tc->id, afs_rx_idledead);
/*
* Only do this for the base connection, not per-user.
* Will need to be revisited if/when CB gets security.
*/
if ((isec == 0) && (service != 52) && !(tu->states & UTokensBad) &&
(tu->viceId == UNDEFVID)
#ifndef UKERNEL /* ukernel runs as just one uid anyway */
&& (tu->uid == 0)
#endif
)
rx_SetConnSecondsUntilNatPing(tc->id, 20);
tc->forceConnectFS = 0; /* apparently we're appropriately connected now */
if (csec)
rxs_Release(csec);
ConvertWToSLock(&afs_xconn);
} /* end of if (tc->forceConnectFS)*/
*rxconn = tc->id;
rx_GetConnection(*rxconn);
ReleaseSharedLock(&afs_xconn);
return tc;
}
/**
* Connects to a server by it's server address.
*
* @param sap Server address.
* @param aport Server port.
* @param acell
* @param tu Connect as this user.
* @param force_if_down
* @param create
* @param locktype Specifies type of lock to be used for this function.
*
* @return The new connection.
*/
struct afs_conn *
afs_ConnBySA(struct srvAddr *sap, unsigned short aport, afs_int32 acell,
struct unixuser *tu, int force_if_down, afs_int32 create,
afs_int32 locktype)
{
struct afs_conn *tc = 0;
struct rx_securityClass *csec; /*Security class object */
int isec; /*Security index */
int service;
if (!sap || ((sap->sa_flags & SRVR_ISDOWN) && !force_if_down)) {
/* sa is known down, and we don't want to force it. */
return NULL;
}
ObtainSharedLock(&afs_xconn, 15);
/* Get conn by port and user. */
for (tc = sap->conns; tc; tc = tc->next) {
if (tc->user == tu && tc->port == aport) {
break;
}
}
if (!tc && !create) {
/* Not found and can't create a new one. */
ReleaseSharedLock(&afs_xconn);
return NULL;
}
if (AFS_IS_DISCONNECTED && !AFS_IN_SYNC) {
afs_warnuser("afs_ConnBySA: disconnected\n");
ReleaseSharedLock(&afs_xconn);
return NULL;
}
if (!tc) {
/* No such connection structure exists. Create one and splice it in.
* Make sure the server record has been marked as used (for the purposes
* of calculating up & down times, it's now considered to be an
* ``active'' server). Also make sure the server's lastUpdateEvalTime
* gets set, marking the time of its ``birth''.
*/
UpgradeSToWLock(&afs_xconn, 37);
tc = (struct afs_conn *)afs_osi_Alloc(sizeof(struct afs_conn));
memset(tc, 0, sizeof(struct afs_conn));
tc->user = tu;
tc->port = aport;
tc->srvr = sap;
tc->refCount = 0; /* bumped below */
tc->forceConnectFS = 1;
tc->id = (struct rx_connection *)0;
tc->next = sap->conns;
sap->conns = tc;
afs_ActivateServer(sap);
ConvertWToSLock(&afs_xconn);
} /* end of if (!tc) */
tc->refCount++;
if (tu->states & UTokensBad) {
/* we may still have an authenticated RPC connection here,
* we'll have to create a new, unauthenticated, connection.
* Perhaps a better way to do this would be to set
* conn->forceConnectFS on all conns when the token first goes
* bad, but that's somewhat trickier, due to locking
* constraints (though not impossible).
*/
if (tc->id && (rx_SecurityClassOf(tc->id) != 0)) {
tc->forceConnectFS = 1; /* force recreation of connection */
}
tu->vid = UNDEFVID; /* forcibly disconnect the authentication info */
}
if (tc->forceConnectFS) {
UpgradeSToWLock(&afs_xconn, 38);
csec = (struct rx_securityClass *)0;
if (tc->id) {
AFS_GUNLOCK();
rx_DestroyConnection(tc->id);
AFS_GLOCK();
}
/*
* Stupid hack to determine if using vldb service or file system
* service.
*/
if (aport == sap->server->cell->vlport)
service = 52;
else
service = 1;
isec = 0;
csec = afs_pickSecurityObject(tc, &isec);
AFS_GUNLOCK();
tc->id = rx_NewConnection(sap->sa_ip, aport, service, csec, isec);
AFS_GLOCK();
if (service == 52) {
rx_SetConnHardDeadTime(tc->id, afs_rx_harddead);
}
/* set to a RX_CALL_TIMEOUT error to allow MTU retry to trigger */
rx_SetServerConnIdleDeadErr(tc->id, RX_CALL_DEAD);
rx_SetConnIdleDeadTime(tc->id, afs_rx_idledead);
rx_SetMsgsizeRetryErr(tc->id, RX_MSGSIZE);
/*
* Only do this for the base connection, not per-user.
* Will need to be revisited if/when CB gets security.
*/
if ((isec == 0) && (service != 52) && !(tu->states & UTokensBad) &&
(tu->vid == UNDEFVID))
rx_SetConnSecondsUntilNatPing(tc->id, 20);
tc->forceConnectFS = 0; /* apparently we're appropriately connected now */
if (csec)
rxs_Release(csec);
ConvertWToSLock(&afs_xconn);
} /* end of if (tc->forceConnectFS)*/
ReleaseSharedLock(&afs_xconn);
return tc;
}