C++ (Cpp) mac_inpcb_check_deliverの例

コード例 #1

ファイル: udp6_usrreq.c プロジェクト: JasonFord53/freebsd

static int
udp6_append(struct inpcb *inp, struct mbuf *n, int off,
    struct sockaddr_in6 *fromsa)
{
	struct socket *so;
	struct mbuf *opts;
	struct udpcb *up;

	INP_LOCK_ASSERT(inp);

	/*
	 * Engage the tunneling protocol.
	 */
	up = intoudpcb(inp);
	if (up->u_tun_func != NULL) {
		in_pcbref(inp);
		INP_RUNLOCK(inp);
		(*up->u_tun_func)(n, off, inp, (struct sockaddr *)fromsa,
		    up->u_tun_ctx);
		INP_RLOCK(inp);
		return (in_pcbrele_rlocked(inp));
	}
#ifdef IPSEC
	/* Check AH/ESP integrity. */
	if (ipsec6_in_reject(n, inp)) {
		m_freem(n);
		return (0);
	}
#endif /* IPSEC */
#ifdef MAC
	if (mac_inpcb_check_deliver(inp, n) != 0) {
		m_freem(n);
		return (0);
	}
#endif
	opts = NULL;
	if (inp->inp_flags & INP_CONTROLOPTS ||
	    inp->inp_socket->so_options & SO_TIMESTAMP)
		ip6_savecontrol(inp, n, &opts);
	m_adj(n, off + sizeof(struct udphdr));

	so = inp->inp_socket;
	SOCKBUF_LOCK(&so->so_rcv);
	if (sbappendaddr_locked(&so->so_rcv, (struct sockaddr *)fromsa, n,
	    opts) == 0) {
		SOCKBUF_UNLOCK(&so->so_rcv);
		m_freem(n);
		if (opts)
			m_freem(opts);
		UDPSTAT_INC(udps_fullsock);
	} else
		sorwakeup_locked(so);
	return (0);
}

コード例 #2

ファイル: udp_usrreq.c プロジェクト: ChristosKa/freebsd

/*
 * Subroutine of udp_input(), which appends the provided mbuf chain to the
 * passed pcb/socket.  The caller must provide a sockaddr_in via udp_in that
 * contains the source address.  If the socket ends up being an IPv6 socket,
 * udp_append() will convert to a sockaddr_in6 before passing the address
 * into the socket code.
 */
static void
udp_append(struct inpcb *inp, struct ip *ip, struct mbuf *n, int off,
    struct sockaddr_in *udp_in)
{
	struct sockaddr *append_sa;
	struct socket *so;
	struct mbuf *opts = 0;
#ifdef INET6
	struct sockaddr_in6 udp_in6;
#endif
	struct udpcb *up;

	INP_LOCK_ASSERT(inp);

	/*
	 * Engage the tunneling protocol.
	 */
	up = intoudpcb(inp);
	if (up->u_tun_func != NULL) {
		(*up->u_tun_func)(n, off, inp);
		return;
	}

	if (n == NULL)
		return;

	off += sizeof(struct udphdr);

#ifdef IPSEC
	/* Check AH/ESP integrity. */
	if (ipsec4_in_reject(n, inp)) {
		m_freem(n);
		IPSECSTAT_INC(ips_in_polvio);
		return;
	}
#ifdef IPSEC_NAT_T
	up = intoudpcb(inp);
	KASSERT(up != NULL, ("%s: udpcb NULL", __func__));
	if (up->u_flags & UF_ESPINUDP_ALL) {	/* IPSec UDP encaps. */
		n = udp4_espdecap(inp, n, off);
		if (n == NULL)				/* Consumed. */
			return;
	}
#endif /* IPSEC_NAT_T */
#endif /* IPSEC */
#ifdef MAC
	if (mac_inpcb_check_deliver(inp, n) != 0) {
		m_freem(n);
		return;
	}
#endif /* MAC */
	if (inp->inp_flags & INP_CONTROLOPTS ||
	    inp->inp_socket->so_options & (SO_TIMESTAMP | SO_BINTIME)) {
#ifdef INET6
		if (inp->inp_vflag & INP_IPV6)
			(void)ip6_savecontrol_v4(inp, n, &opts, NULL);
		else
#endif /* INET6 */
			ip_savecontrol(inp, &opts, ip, n);
	}
#ifdef INET6
	if (inp->inp_vflag & INP_IPV6) {
		bzero(&udp_in6, sizeof(udp_in6));
		udp_in6.sin6_len = sizeof(udp_in6);
		udp_in6.sin6_family = AF_INET6;
		in6_sin_2_v4mapsin6(udp_in, &udp_in6);
		append_sa = (struct sockaddr *)&udp_in6;
	} else
#endif /* INET6 */
		append_sa = (struct sockaddr *)udp_in;
	m_adj(n, off);

	so = inp->inp_socket;
	SOCKBUF_LOCK(&so->so_rcv);
	if (sbappendaddr_locked(&so->so_rcv, append_sa, n, opts) == 0) {
		SOCKBUF_UNLOCK(&so->so_rcv);
		m_freem(n);
		if (opts)
			m_freem(opts);
		UDPSTAT_INC(udps_fullsock);
	} else
		sorwakeup_locked(so);
}