Function sys_sctp_generic_sendmsg

freebsd/netinet/sctp_syscalls.c:212–319

(td, uap)

}

int
sys_sctp_generic_sendmsg (td, uap)
	struct thread *td;
	struct sctp_generic_sendmsg_args /* {
		int sd,
		caddr_t msg,
		int mlen,
		caddr_t to,
		__socklen_t tolen,
		struct sctp_sndrcvinfo *sinfo,
		int flags
	} */ *uap;
{
	struct sctp_sndrcvinfo sinfo, *u_sinfo = NULL;
	struct socket *so;
	struct file *fp = NULL;
	struct sockaddr *to = NULL;
#ifdef KTRACE
	struct uio *ktruio = NULL;
#endif
	struct uio auio;
	struct iovec iov[1];
	cap_rights_t rights;
	int error = 0, len;

	if (uap->sinfo != NULL) {
		error = copyin(uap->sinfo, &sinfo, sizeof (sinfo));
		if (error != 0)
			return (error);
		u_sinfo = &sinfo;
	}

	cap_rights_init_one(&rights, CAP_SEND);
	if (uap->tolen != 0) {
		error = getsockaddr(&to, uap->to, uap->tolen);
		if (error != 0) {
			to = NULL;
			goto sctp_bad2;
		}
		cap_rights_set_one(&rights, CAP_CONNECT);
	}

	AUDIT_ARG_FD(uap->sd);
	error = getsock_cap(td, uap->sd, &rights, &fp, NULL, NULL);
	if (error != 0)
		goto sctp_bad;
#ifdef KTRACE
	if (to && (KTRPOINT(td, KTR_STRUCT)))
		ktrsockaddr(to);
#endif

	iov[0].iov_base = uap->msg;
	iov[0].iov_len = uap->mlen;

	so = (struct socket *)fp->f_data;
	if (so->so_proto->pr_protocol != IPPROTO_SCTP) {
		error = EOPNOTSUPP;
		goto sctp_bad;