Exemplo n.º 1
0
void
svc_authenticate(struct svc_rqst *rqstp, u32 *statp, u32 *authp)
{
	u32		flavor;
	auth_fn_t	func;

	*statp = rpc_success;
	*authp = rpc_auth_ok;

	svc_getlong(&rqstp->rq_argbuf, flavor);
	flavor = ntohl(flavor);

	dprintk("svc: svc_authenticate (%d)\n", flavor);
	if (flavor >= RPC_SVCAUTH_MAX || !(func = authtab[flavor])) {
		*authp = rpc_autherr_badcred;
		return;
	}

	rqstp->rq_cred.cr_flavor = flavor;
	func(rqstp, statp, authp);
}
Exemplo n.º 2
0
/*
 * Receive the next request on any socket.
 */
int
svc_recv(struct svc_serv *serv, struct svc_rqst *rqstp, long timeout)
{
	struct svc_sock		*svsk;
	int			len;
	DECLARE_WAITQUEUE(wait, current);

	dprintk("svc: server %p waiting for data (to = %ld)\n",
		rqstp, timeout);

	if (rqstp->rq_sock)
		printk(KERN_ERR 
			"svc_recv: service %p, socket not NULL!\n",
			 rqstp);
	if (waitqueue_active(&rqstp->rq_wait))
		printk(KERN_ERR 
			"svc_recv: service %p, wait queue active!\n",
			 rqstp);

	/* Initialize the buffers */
	rqstp->rq_argbuf = rqstp->rq_defbuf;
	rqstp->rq_resbuf = rqstp->rq_defbuf;

	if (signalled())
		return -EINTR;

	spin_lock_bh(&serv->sv_lock);
	if ((svsk = svc_sock_dequeue(serv)) != NULL) {
		rqstp->rq_sock = svsk;
		svsk->sk_inuse++;
	} else {
		/* No data pending. Go to sleep */
		svc_serv_enqueue(serv, rqstp);

		/*
		 * We have to be able to interrupt this wait
		 * to bring down the daemons ...
		 */
		set_current_state(TASK_INTERRUPTIBLE);
		add_wait_queue(&rqstp->rq_wait, &wait);
		spin_unlock_bh(&serv->sv_lock);

		schedule_timeout(timeout);

		spin_lock_bh(&serv->sv_lock);
		remove_wait_queue(&rqstp->rq_wait, &wait);

		if (!(svsk = rqstp->rq_sock)) {
			svc_serv_dequeue(serv, rqstp);
			spin_unlock_bh(&serv->sv_lock);
			dprintk("svc: server %p, no data yet\n", rqstp);
			return signalled()? -EINTR : -EAGAIN;
		}
	}
	spin_unlock_bh(&serv->sv_lock);

	dprintk("svc: server %p, socket %p, inuse=%d\n",
		 rqstp, svsk, svsk->sk_inuse);
	len = svsk->sk_recvfrom(rqstp);
	dprintk("svc: got len=%d\n", len);

	/* No data, incomplete (TCP) read, or accept() */
	if (len == 0 || len == -EAGAIN) {
		svc_sock_release(rqstp);
		return -EAGAIN;
	}

	rqstp->rq_secure  = ntohs(rqstp->rq_addr.sin_port) < 1024;
	rqstp->rq_userset = 0;
	rqstp->rq_verfed  = 0;

	svc_getlong(&rqstp->rq_argbuf, rqstp->rq_xid);
	svc_putlong(&rqstp->rq_resbuf, rqstp->rq_xid);

	/* Assume that the reply consists of a single buffer. */
	rqstp->rq_resbuf.nriov = 1;

	if (serv->sv_stats)
		serv->sv_stats->netcnt++;
	return len;
}