1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
|
/*-
* 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_CHECK(ip6q_init_label, label, flag);
else
MAC_CHECK_NOSLEEP(ip6q_init_label, label, flag);
if (error) {
MAC_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_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;
label = mac_mbuf_to_label(m);
MAC_PERFORM_NOSLEEP(ip6q_reassemble, q6, q6->ip6q_label, m, label);
}
void
mac_ip6q_create(struct mbuf *m, struct ip6q *q6)
{
struct label *label;
label = mac_mbuf_to_label(m);
MAC_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;
label = mac_mbuf_to_label(m);
result = 1;
MAC_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;
label = mac_mbuf_to_label(m);
MAC_PERFORM_NOSLEEP(ip6q_update, m, label, q6, q6->ip6q_label);
}
void
mac_netinet6_nd6_send(struct ifnet *ifp, struct mbuf *m)
{
struct label *mlabel;
mlabel = mac_mbuf_to_label(m);
MAC_PERFORM_NOSLEEP(netinet6_nd6_send, ifp, ifp->if_label, m,
mlabel);
}
|