Function getsockaddr

freebsd/kern/uipc_syscalls.c:1564–1588

}

int
getsockaddr(struct sockaddr **namp, const struct sockaddr *uaddr, size_t len)
{
	struct sockaddr *sa;
	int error;

	if (len > SOCK_MAXADDRLEN)
		return (ENAMETOOLONG);
	if (len < offsetof(struct sockaddr, sa_data[0]))
		return (EINVAL);
	sa = malloc(len, M_SONAME, M_WAITOK);
	error = copyin(uaddr, sa, len);
	if (error != 0) {
		free(sa, M_SONAME);
	} else {
#if defined(COMPAT_OLDSOCK) && BYTE_ORDER != BIG_ENDIAN
		if (sa->sa_family == 0 && sa->sa_len < AF_MAX &&
		    SV_CURPROC_FLAG(SV_AOUT))
			sa->sa_family = sa->sa_len;
#endif
		sa->sa_len = len;
		*namp = sa;
	}
	return (error);
}

/*
 * Dispose of externalized rights from an SCM_RIGHTS message.  This function