+++ /dev/null
-/*
- * Copyright (c) 2007-2011 Apple Inc. All rights reserved.
- *
- * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
- *
- * This file contains Original Code and/or Modifications of Original Code
- * as defined in and that are subject to the Apple Public Source License
- * Version 2.0 (the 'License'). You may not use this file except in
- * compliance with the License. The rights granted to you under the License
- * may not be used to create, or enable the creation or redistribution of,
- * unlawful or unlicensed copies of an Apple operating system, or to
- * circumvent, violate, or enable the circumvention or violation of, any
- * terms of an Apple operating system software license agreement.
- *
- * Please obtain a copy of the License at
- * http://www.opensource.apple.com/apsl/ and read it before using this file.
- *
- * The Original Code and all software distributed under the License are
- * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
- * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- * Please see the License for the specific language governing rights and
- * limitations under the License.
- *
- * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
- */
-/*-
- * Copyright (c) 1999-2002 Robert N. M. Watson
- * Copyright (c) 2001 Ilmar S. Habibulin
- * Copyright (c) 2001-2004 Networks Associates Technology, Inc.
- * Copyright (c) 2006-2007 SPARTA, Inc.
- * All rights reserved.
- *
- * This software was developed by Robert Watson and Ilmar Habibulin for the
- * TrustedBSD Project.
- *
- * This software was developed for the FreeBSD Project in part by Network
- * Associates Laboratories, the Security Research Division of Network
- * Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"),
- * as part of the DARPA CHATS research program.
- *
- * This software was enhanced by SPARTA ISSO under SPAWAR contract
- * N66001-04-C-6019 ("SEFOS").
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#include <sys/param.h>
-#include <sys/kernel.h>
-#include <sys/mbuf.h>
-#include <sys/socket.h>
-#include <sys/socketvar.h>
-
-#include <net/route.h>
-
-#include <netinet/in.h>
-#include <netinet/in_pcb.h>
-#include <netinet/ip_var.h>
-
-#include <security/mac_internal.h>
-
-static struct label *
-mac_inpcb_label_alloc(int flag)
-{
- struct label *label;
- int error;
-
- label = mac_labelzone_alloc(flag);
- if (label == NULL) {
- return NULL;
- }
- MAC_CHECK(inpcb_label_init, label, flag);
- if (error) {
- MAC_PERFORM(inpcb_label_destroy, label);
- mac_labelzone_free(label);
- return NULL;
- }
- return label;
-}
-
-int
-mac_inpcb_label_init(struct inpcb *inp, int flag)
-{
- inp->inp_label = mac_inpcb_label_alloc(flag);
- if (inp->inp_label == NULL) {
- return ENOMEM;
- }
- return 0;
-}
-
-static struct label *
-mac_ipq_label_alloc(int flag)
-{
- struct label *label;
- int error;
-
- label = mac_labelzone_alloc(flag);
- if (label == NULL) {
- return NULL;
- }
-
- MAC_CHECK(ipq_label_init, label, flag);
- if (error) {
- MAC_PERFORM(ipq_label_destroy, label);
- mac_labelzone_free(label);
- return NULL;
- }
- return label;
-}
-
-int
-mac_ipq_label_init(struct ipq *ipq, int flag)
-{
- ipq->ipq_label = mac_ipq_label_alloc(flag);
- if (ipq->ipq_label == NULL) {
- return ENOMEM;
- }
- return 0;
-}
-
-static void
-mac_inpcb_label_free(struct label *label)
-{
- MAC_PERFORM(inpcb_label_destroy, label);
- mac_labelzone_free(label);
-}
-
-void
-mac_inpcb_label_destroy(struct inpcb *inp)
-{
- mac_inpcb_label_free(inp->inp_label);
- inp->inp_label = NULL;
-}
-
-void
-mac_inpcb_label_recycle(struct inpcb *inp)
-{
- MAC_PERFORM(inpcb_label_recycle, inp->inp_label);
-}
-
-static void
-mac_ipq_label_free(struct label *label)
-{
- MAC_PERFORM(ipq_label_destroy, label);
- mac_labelzone_free(label);
-}
-
-void
-mac_ipq_label_destroy(struct ipq *ipq)
-{
- mac_ipq_label_free(ipq->ipq_label);
- ipq->ipq_label = NULL;
-}
-
-void
-mac_inpcb_label_associate(struct socket *so, struct inpcb *inp)
-{
- MAC_PERFORM(inpcb_label_associate, so, so->so_label, inp,
- inp->inp_label);
-}
-
-void
-mac_mbuf_label_associate_ipq(struct ipq *ipq, struct mbuf *m)
-{
- struct label *label;
-
- label = mac_mbuf_to_label(m);
-
- MAC_PERFORM(mbuf_label_associate_ipq, ipq, ipq->ipq_label, m, label);
-}
-
-void
-mac_netinet_fragment(struct mbuf *datagram, struct mbuf *fragment)
-{
- struct label *datagramlabel, *fragmentlabel;
-
- datagramlabel = mac_mbuf_to_label(datagram);
- fragmentlabel = mac_mbuf_to_label(fragment);
-
- MAC_PERFORM(netinet_fragment, datagram, datagramlabel, fragment,
- fragmentlabel);
-}
-
-void
-mac_ipq_label_associate(struct mbuf *fragment, struct ipq *ipq)
-{
- struct label *label;
-
- label = mac_mbuf_to_label(fragment);
-
- MAC_PERFORM(ipq_label_associate, fragment, label, ipq, ipq->ipq_label);
-}
-
-void
-mac_mbuf_label_associate_inpcb(struct inpcb *inp, struct mbuf *m)
-{
- struct label *mlabel;
-
- /* INP_LOCK_ASSERT(inp); */
- mlabel = mac_mbuf_to_label(m);
-
- MAC_PERFORM(mbuf_label_associate_inpcb, inp, inp->inp_label, m, mlabel);
-}
-
-int
-mac_ipq_label_compare(struct mbuf *fragment, struct ipq *ipq)
-{
- struct label *label;
- int result;
-
- label = mac_mbuf_to_label(fragment);
-
- result = 1;
- MAC_BOOLEAN(ipq_label_compare, &&, fragment, label, ipq, ipq->ipq_label);
-
- return result;
-}
-
-void
-mac_netinet_icmp_reply(struct mbuf *m)
-{
- struct label *label;
-
- label = mac_mbuf_to_label(m);
-
- MAC_PERFORM(netinet_icmp_reply, m, label);
-}
-
-void
-mac_netinet_tcp_reply(struct mbuf *m)
-{
- struct label *label;
-
- label = mac_mbuf_to_label(m);
-
- MAC_PERFORM(netinet_tcp_reply, m, label);
-}
-
-void
-mac_ipq_label_update(struct mbuf *fragment, struct ipq *ipq)
-{
- struct label *label;
-
- label = mac_mbuf_to_label(fragment);
-
- MAC_PERFORM(ipq_label_update, fragment, label, ipq, ipq->ipq_label);
-}
-
-int
-mac_inpcb_check_deliver(struct inpcb *inp, struct mbuf *m, int family, int type)
-{
- struct label *label;
- int error;
-
- if ((m->m_flags & M_PKTHDR) == 0) {
- panic("%s: no mbuf packet header!", __func__);
- }
-
- label = mac_mbuf_to_label(m);
-
- MAC_CHECK(inpcb_check_deliver, inp, inp->inp_label, m, label,
- family, type);
-
- return error;
-}
-
-/*
- * Propagate a change in the socket label to the inpcb label.
- */
-void
-mac_inpcb_label_update(struct socket *so)
-{
- struct inpcb *inp;
-
- /* XXX: assert socket lock. */
- inp = sotoinpcb(so); /* XXX: inp locking */
-
- if (inp != NULL) {
- /* INP_LOCK_ASSERT(inp); */
- MAC_PERFORM(inpcb_label_update, so, so->so_label, inp,
- inp->inp_label);
- }
-}
projects / apple / xnu.git / blobdiff