/*
* NFS disconnect. Clean up and unlink.
*/
void
nfs_disconnect(struct nfsmount *nmp)
{
CLIENT *client;
mtx_lock(&nmp->nm_mtx);
if (nmp->nm_client) {
client = nmp->nm_client;
nmp->nm_client = NULL;
mtx_unlock(&nmp->nm_mtx);
rpc_gss_secpurge_call(client);
CLNT_CLOSE(client);
CLNT_RELEASE(client);
} else
mtx_unlock(&nmp->nm_mtx);
}
/*
* NFS disconnect. Clean up and unlink.
*/
void
nfs_disconnect(struct nfsmount *nmp)
{
CLIENT *client;
mtx_lock(&nmp->nm_mtx);
if (nmp->nm_client) {
client = nmp->nm_client;
nmp->nm_client = NULL;
mtx_unlock(&nmp->nm_mtx);
#ifdef KGSSAPI
rpc_gss_secpurge(client);
#endif
CLNT_CLOSE(client);
CLNT_RELEASE(client);
} else {
mtx_unlock(&nmp->nm_mtx);
}
}
static void
clnt_reconnect_close(CLIENT *cl)
{
struct rc_data *rc = (struct rc_data *)cl->cl_private;
CLIENT *client;
mtx_lock(&rc->rc_lock);
if (rc->rc_closed) {
mtx_unlock(&rc->rc_lock);
return;
}
rc->rc_closed = TRUE;
client = rc->rc_client;
rc->rc_client = NULL;
mtx_unlock(&rc->rc_lock);
if (client) {
CLNT_CLOSE(client);
CLNT_RELEASE(client);
}
}
static enum clnt_stat
clnt_reconnect_connect(CLIENT *cl)
{
struct thread *td = curthread;
struct rc_data *rc = (struct rc_data *)cl->cl_private;
struct socket *so;
enum clnt_stat stat;
int error;
int one = 1;
struct ucred *oldcred;
CLIENT *newclient = NULL;
mtx_lock(&rc->rc_lock);
while (rc->rc_connecting) {
error = msleep(rc, &rc->rc_lock,
rc->rc_intr ? PCATCH : 0, "rpcrecon", 0);
if (error) {
mtx_unlock(&rc->rc_lock);
return (RPC_INTR);
}
}
if (rc->rc_closed) {
mtx_unlock(&rc->rc_lock);
return (RPC_CANTSEND);
}
if (rc->rc_client) {
mtx_unlock(&rc->rc_lock);
return (RPC_SUCCESS);
}
/*
* My turn to attempt a connect. The rc_connecting variable
* serializes the following code sequence, so it is guaranteed
* that rc_client will still be NULL after it is re-locked below,
* since that is the only place it is set non-NULL.
*/
rc->rc_connecting = TRUE;
mtx_unlock(&rc->rc_lock);
oldcred = td->td_ucred;
td->td_ucred = rc->rc_ucred;
so = __rpc_nconf2socket(rc->rc_nconf);
if (!so) {
stat = rpc_createerr.cf_stat = RPC_TLIERROR;
rpc_createerr.cf_error.re_errno = 0;
td->td_ucred = oldcred;
goto out;
}
if (rc->rc_privport)
bindresvport(so, NULL);
if (rc->rc_nconf->nc_semantics == NC_TPI_CLTS)
newclient = clnt_dg_create(so,
(struct sockaddr *) &rc->rc_addr, rc->rc_prog, rc->rc_vers,
rc->rc_sendsz, rc->rc_recvsz);
else
newclient = clnt_vc_create(so,
(struct sockaddr *) &rc->rc_addr, rc->rc_prog, rc->rc_vers,
rc->rc_sendsz, rc->rc_recvsz, rc->rc_intr);
td->td_ucred = oldcred;
if (!newclient) {
soclose(so);
rc->rc_err = rpc_createerr.cf_error;
stat = rpc_createerr.cf_stat;
goto out;
}
CLNT_CONTROL(newclient, CLSET_FD_CLOSE, 0);
CLNT_CONTROL(newclient, CLSET_CONNECT, &one);
CLNT_CONTROL(newclient, CLSET_TIMEOUT, &rc->rc_timeout);
CLNT_CONTROL(newclient, CLSET_RETRY_TIMEOUT, &rc->rc_retry);
CLNT_CONTROL(newclient, CLSET_WAITCHAN, rc->rc_waitchan);
CLNT_CONTROL(newclient, CLSET_INTERRUPTIBLE, &rc->rc_intr);
if (rc->rc_backchannel != NULL)
CLNT_CONTROL(newclient, CLSET_BACKCHANNEL, rc->rc_backchannel);
stat = RPC_SUCCESS;
out:
mtx_lock(&rc->rc_lock);
KASSERT(rc->rc_client == NULL, ("rc_client not null"));
if (!rc->rc_closed) {
rc->rc_client = newclient;
newclient = NULL;
}
rc->rc_connecting = FALSE;
wakeup(rc);
mtx_unlock(&rc->rc_lock);
if (newclient) {
/*
* It has been closed, so discard the new client.
* nb: clnt_[dg|vc]_close()/clnt_[dg|vc]_destroy() cannot
* be called with the rc_lock mutex held, since they may
* msleep() while holding a different mutex.
*/
CLNT_CLOSE(newclient);
CLNT_RELEASE(newclient);
}
return (stat);
}
