sobind
error = sobind(so, nam, p);
error = sobind(so, m, p);
error = sobind(so, m, p);
error = sobind(so, m, p);
error = sobind(so, &m, curproc);
if ((ret = sobind(*so, &mhostnam, curproc)) == 0) {
error = sobind(so, m, &proc0);
error = sobind(so, nam, &proc0);
int sobind(struct socket *, struct mbuf *, struct proc *);