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/*-
* Copyright (c) 2007-2009 Robert N. M. Watson
* All rights reserved.
*
* This software was developed by Robert Watson for the TrustedBSD Project.
*
* This software was developed at the University of Cambridge Computer
* Laboratory with support from a grant from Google, Inc.
*
* 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/cdefs.h>
__FBSDID("$FreeBSD$");
#include "opt_mac.h"
#include <sys/param.h>
#include <sys/kernel.h>
#include <sys/lock.h>
#include <sys/malloc.h>
#include <sys/mutex.h>
#include <sys/sbuf.h>
#include <sys/systm.h>
#include <sys/mount.h>
#include <sys/file.h>
#include <sys/namei.h>
#include <sys/protosw.h>
#include <sys/socket.h>
#include <sys/socketvar.h>
#include <sys/sysctl.h>
#include <net/if.h>
#include <net/if_var.h>
#include <netinet/in.h>
#include <netinet/ip6.h>
#include <netinet6/ip6_var.h>
#include <security/mac/mac_framework.h>
#include <security/mac/mac_internal.h>
#include <security/mac/mac_policy.h>
static struct label *
mac_ip6q_label_alloc(int flag)
{
struct label *label;
int error;
label = mac_labelzone_alloc(flag);
if (label == NULL)
return (NULL);
if (flag & M_WAITOK)
MAC_POLICY_CHECK(ip6q_init_label, label, flag);
else
MAC_POLICY_CHECK_NOSLEEP(ip6q_init_label, label, flag);
if (error) {
MAC_POLICY_PERFORM_NOSLEEP(ip6q_destroy_label, label);
mac_labelzone_free(label);
return (NULL);
}
return (label);
}
int
mac_ip6q_init(struct ip6q *q6, int flag)
{
if (mac_labeled & MPC_OBJECT_IP6Q) {
q6->ip6q_label = mac_ip6q_label_alloc(flag);
if (q6->ip6q_label == NULL)
return (ENOMEM);
} else
q6->ip6q_label = NULL;
return (0);
}
static void
mac_ip6q_label_free(struct label *label)
{
MAC_POLICY_PERFORM_NOSLEEP(ip6q_destroy_label, label);
mac_labelzone_free(label);
}
void
mac_ip6q_destroy(struct ip6q *q6)
{
if (q6->ip6q_label != NULL) {
mac_ip6q_label_free(q6->ip6q_label);
q6->ip6q_label = NULL;
}
}
void
mac_ip6q_reassemble(struct ip6q *q6, struct mbuf *m)
{
struct label *label;
if (mac_policy_count == 0)
return;
label = mac_mbuf_to_label(m);
MAC_POLICY_PERFORM_NOSLEEP(ip6q_reassemble, q6, q6->ip6q_label, m,
label);
}
void
mac_ip6q_create(struct mbuf *m, struct ip6q *q6)
{
struct label *label;
if (mac_policy_count == 0)
return;
label = mac_mbuf_to_label(m);
MAC_POLICY_PERFORM_NOSLEEP(ip6q_create, m, label, q6,
q6->ip6q_label);
}
int
mac_ip6q_match(struct mbuf *m, struct ip6q *q6)
{
struct label *label;
int result;
if (mac_policy_count == 0)
return (1);
label = mac_mbuf_to_label(m);
result = 1;
MAC_POLICY_BOOLEAN_NOSLEEP(ip6q_match, &&, m, label, q6,
q6->ip6q_label);
return (result);
}
void
mac_ip6q_update(struct mbuf *m, struct ip6q *q6)
{
struct label *label;
if (mac_policy_count == 0)
return;
label = mac_mbuf_to_label(m);
MAC_POLICY_PERFORM_NOSLEEP(ip6q_update, m, label, q6,
q6->ip6q_label);
}
void
mac_netinet6_nd6_send(struct ifnet *ifp, struct mbuf *m)
{
struct label *mlabel;
if (mac_policy_count == 0)
return;
mlabel = mac_mbuf_to_label(m);
MAC_POLICY_PERFORM_NOSLEEP(netinet6_nd6_send, ifp, ifp->if_label, m,
mlabel);
}
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