Beispiel #1
0
static void
udp6_connect(netmsg_t msg)
{
	struct socket *so = msg->connect.base.nm_so;
	struct sockaddr *nam = msg->connect.nm_nam;
	struct thread *td = msg->connect.nm_td;
	struct sockaddr_in6 *sin6_p;
	struct inpcb *inp;
	int error;

	inp = so->so_pcb;
	if (inp == NULL) {
		error = EINVAL;
		goto out;
	}

	sin6_p = (struct sockaddr_in6 *)nam;
	if (IN6_IS_ADDR_V4MAPPED(&sin6_p->sin6_addr)) {
		error = EADDRNOTAVAIL;
		goto out;
	}

	if (!IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_faddr)) {
		error = EISCONN;
		goto out;
	}
	if (inp->inp_flags & INP_WILDCARD)
		in_pcbremwildcardhash(inp);
	if (!prison_remote_ip(td, nam)) {
		error = EAFNOSUPPORT; /* IPv4 only jail */
		goto out;
	}
	error = in6_pcbconnect(inp, nam, td);
	if (error == 0) {
		soisconnected(so);
	} else if (error == EAFNOSUPPORT) {	/* connection dissolved */
		/*
		 * Follow traditional BSD behavior and retain
		 * the local port binding.  But, fix the old misbehavior
		 * of overwriting any previously bound local address.
		 */
		if (!(inp->inp_flags & INP_WASBOUND_NOTANY))
			inp->in6p_laddr = kin6addr_any;
		in_pcbinswildcardhash(inp);
	}
out:
	lwkt_replymsg(&msg->connect.base.lmsg, error);
}
Beispiel #2
0
static int
udp6_connect(struct socket *so, struct sockaddr *nam, struct thread *td)
{
	struct inpcb *inp;
	struct inpcbinfo *pcbinfo;
	struct sockaddr_in6 *sin6;
	int error;

	pcbinfo = udp_get_inpcbinfo(so->so_proto->pr_protocol);
	inp = sotoinpcb(so);
	sin6 = (struct sockaddr_in6 *)nam;
	KASSERT(inp != NULL, ("udp6_connect: inp == NULL"));

	/*
	 * XXXRW: Need to clarify locking of v4/v6 flags.
	 */
	INP_WLOCK(inp);
#ifdef INET
	if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
		struct sockaddr_in sin;

		if ((inp->inp_flags & IN6P_IPV6_V6ONLY) != 0) {
			error = EINVAL;
			goto out;
		}
		if (inp->inp_faddr.s_addr != INADDR_ANY) {
			error = EISCONN;
			goto out;
		}
		in6_sin6_2_sin(&sin, sin6);
		inp->inp_vflag |= INP_IPV4;
		inp->inp_vflag &= ~INP_IPV6;
		error = prison_remote_ip4(td->td_ucred, &sin.sin_addr);
		if (error != 0)
			goto out;
		INP_HASH_WLOCK(pcbinfo);
		error = in_pcbconnect(inp, (struct sockaddr *)&sin,
		    td->td_ucred);
		INP_HASH_WUNLOCK(pcbinfo);
		if (error == 0)
			soisconnected(so);
		goto out;
	}
#endif
	if (!IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_faddr)) {
		error = EISCONN;
		goto out;
	}
	inp->inp_vflag &= ~INP_IPV4;
	inp->inp_vflag |= INP_IPV6;
	error = prison_remote_ip6(td->td_ucred, &sin6->sin6_addr);
	if (error != 0)
		goto out;
	INP_HASH_WLOCK(pcbinfo);
	error = in6_pcbconnect(inp, nam, td->td_ucred);
	INP_HASH_WUNLOCK(pcbinfo);
	if (error == 0)
		soisconnected(so);
out:
	INP_WUNLOCK(inp);
	return (error);
}