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);
}
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);
}