1/*-
2 * Copyright (c) 1999-2002 Robert N. M. Watson
3 * Copyright (c) 2001 Ilmar S. Habibulin
4 * Copyright (c) 2001-2004 Networks Associates Technology, Inc.
5 * Copyright (c) 2006 SPARTA, Inc.
6 * All rights reserved.
7 *
8 * This software was developed by Robert Watson and Ilmar Habibulin for the
9 * TrustedBSD Project.
10 *
11 * This software was developed for the FreeBSD Project in part by Network
12 * Associates Laboratories, the Security Research Division of Network
13 * Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"),
14 * as part of the DARPA CHATS research program.
15 *
16 * This software was enhanced by SPARTA ISSO under SPAWAR contract
17 * N66001-04-C-6019 ("SEFOS").
18 *
19 * Redistribution and use in source and binary forms, with or without
20 * modification, are permitted provided that the following conditions
21 * are met:
22 * 1. Redistributions of source code must retain the above copyright
23 * notice, this list of conditions and the following disclaimer.
24 * 2. Redistributions in binary form must reproduce the above copyright
25 * notice, this list of conditions and the following disclaimer in the
26 * documentation and/or other materials provided with the distribution.
27 *
28 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
29 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
30 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
31 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
32 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
33 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
34 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
35 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
36 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
37 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
38 * SUCH DAMAGE.
39 */
40
41#include <sys/cdefs.h>
| 1/*-
2 * Copyright (c) 1999-2002 Robert N. M. Watson
3 * Copyright (c) 2001 Ilmar S. Habibulin
4 * Copyright (c) 2001-2004 Networks Associates Technology, Inc.
5 * Copyright (c) 2006 SPARTA, Inc.
6 * All rights reserved.
7 *
8 * This software was developed by Robert Watson and Ilmar Habibulin for the
9 * TrustedBSD Project.
10 *
11 * This software was developed for the FreeBSD Project in part by Network
12 * Associates Laboratories, the Security Research Division of Network
13 * Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"),
14 * as part of the DARPA CHATS research program.
15 *
16 * This software was enhanced by SPARTA ISSO under SPAWAR contract
17 * N66001-04-C-6019 ("SEFOS").
18 *
19 * Redistribution and use in source and binary forms, with or without
20 * modification, are permitted provided that the following conditions
21 * are met:
22 * 1. Redistributions of source code must retain the above copyright
23 * notice, this list of conditions and the following disclaimer.
24 * 2. Redistributions in binary form must reproduce the above copyright
25 * notice, this list of conditions and the following disclaimer in the
26 * documentation and/or other materials provided with the distribution.
27 *
28 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
29 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
30 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
31 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
32 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
33 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
34 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
35 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
36 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
37 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
38 * SUCH DAMAGE.
39 */
40
41#include <sys/cdefs.h>
|
43
44#include "opt_mac.h"
45
46#include <sys/param.h>
47#include <sys/kernel.h>
48#include <sys/lock.h>
49#include <sys/malloc.h>
50#include <sys/mutex.h>
51#include <sys/sbuf.h>
52#include <sys/systm.h>
53#include <sys/mount.h>
54#include <sys/file.h>
55#include <sys/namei.h>
56#include <sys/protosw.h>
57#include <sys/socket.h>
58#include <sys/socketvar.h>
59#include <sys/sysctl.h>
60
61#include <net/if.h>
62#include <net/if_var.h>
63
64#include <netinet/in.h>
65#include <netinet/in_pcb.h>
66#include <netinet/ip_var.h>
67
68#include <security/mac/mac_framework.h>
69#include <security/mac/mac_internal.h>
70#include <security/mac/mac_policy.h>
71
72static struct label *
73mac_inpcb_label_alloc(int flag)
74{
75 struct label *label;
76 int error;
77
78 label = mac_labelzone_alloc(flag);
79 if (label == NULL)
80 return (NULL);
81 MAC_CHECK(inpcb_init_label, label, flag);
82 if (error) {
83 MAC_PERFORM(inpcb_destroy_label, label);
84 mac_labelzone_free(label);
85 return (NULL);
86 }
87 return (label);
88}
89
90int
91mac_inpcb_init(struct inpcb *inp, int flag)
92{
93
94 inp->inp_label = mac_inpcb_label_alloc(flag);
95 if (inp->inp_label == NULL)
96 return (ENOMEM);
97 return (0);
98}
99
100static struct label *
101mac_ipq_label_alloc(int flag)
102{
103 struct label *label;
104 int error;
105
106 label = mac_labelzone_alloc(flag);
107 if (label == NULL)
108 return (NULL);
109
110 MAC_CHECK(ipq_init_label, label, flag);
111 if (error) {
112 MAC_PERFORM(ipq_destroy_label, label);
113 mac_labelzone_free(label);
114 return (NULL);
115 }
116 return (label);
117}
118
119int
120mac_ipq_init(struct ipq *ipq, int flag)
121{
122
123 ipq->ipq_label = mac_ipq_label_alloc(flag);
124 if (ipq->ipq_label == NULL)
125 return (ENOMEM);
126 return (0);
127}
128
129static void
130mac_inpcb_label_free(struct label *label)
131{
132
133 MAC_PERFORM(inpcb_destroy_label, label);
134 mac_labelzone_free(label);
135}
136
137void
138mac_inpcb_destroy(struct inpcb *inp)
139{
140
141 mac_inpcb_label_free(inp->inp_label);
142 inp->inp_label = NULL;
143}
144
145static void
146mac_ipq_label_free(struct label *label)
147{
148
149 MAC_PERFORM(ipq_destroy_label, label);
150 mac_labelzone_free(label);
151}
152
153void
154mac_ipq_destroy(struct ipq *ipq)
155{
156
157 mac_ipq_label_free(ipq->ipq_label);
158 ipq->ipq_label = NULL;
159}
160
161void
162mac_inpcb_create(struct socket *so, struct inpcb *inp)
163{
164
165 MAC_PERFORM(inpcb_create, so, so->so_label, inp, inp->inp_label);
166}
167
168void
169mac_ipq_reassemble(struct ipq *ipq, struct mbuf *m)
170{
171 struct label *label;
172
173 label = mac_mbuf_to_label(m);
174
175 MAC_PERFORM(ipq_reassemble, ipq, ipq->ipq_label, m, label);
176}
177
178void
179mac_netinet_fragment(struct mbuf *m, struct mbuf *frag)
180{
181 struct label *mlabel, *fraglabel;
182
183 mlabel = mac_mbuf_to_label(m);
184 fraglabel = mac_mbuf_to_label(frag);
185
186 MAC_PERFORM(netinet_fragment, m, mlabel, frag, fraglabel);
187}
188
189void
190mac_ipq_create(struct mbuf *m, struct ipq *ipq)
191{
192 struct label *label;
193
194 label = mac_mbuf_to_label(m);
195
196 MAC_PERFORM(ipq_create, m, label, ipq, ipq->ipq_label);
197}
198
199void
200mac_inpcb_create_mbuf(struct inpcb *inp, struct mbuf *m)
201{
202 struct label *mlabel;
203
204 INP_LOCK_ASSERT(inp);
205 mlabel = mac_mbuf_to_label(m);
206
207 MAC_PERFORM(inpcb_create_mbuf, inp, inp->inp_label, m, mlabel);
208}
209
210int
211mac_ipq_match(struct mbuf *m, struct ipq *ipq)
212{
213 struct label *label;
214 int result;
215
216 label = mac_mbuf_to_label(m);
217
218 result = 1;
219 MAC_BOOLEAN(ipq_match, &&, m, label, ipq, ipq->ipq_label);
220
221 return (result);
222}
223
224void
225mac_netinet_icmp_reply(struct mbuf *m)
226{
227 struct label *label;
228
229 label = mac_mbuf_to_label(m);
230
231 MAC_PERFORM(netinet_icmp_reply, m, label);
232}
233
234void
235mac_netinet_tcp_reply(struct mbuf *m)
236{
237 struct label *label;
238
239 label = mac_mbuf_to_label(m);
240
241 MAC_PERFORM(netinet_tcp_reply, m, label);
242}
243
244void
245mac_ipq_update(struct mbuf *m, struct ipq *ipq)
246{
247 struct label *label;
248
249 label = mac_mbuf_to_label(m);
250
251 MAC_PERFORM(ipq_update, m, label, ipq, ipq->ipq_label);
252}
253
254int
255mac_inpcb_check_deliver(struct inpcb *inp, struct mbuf *m)
256{
257 struct label *label;
258 int error;
259
260 M_ASSERTPKTHDR(m);
261
262 label = mac_mbuf_to_label(m);
263
264 MAC_CHECK(inpcb_check_deliver, inp, inp->inp_label, m, label);
265
266 return (error);
267}
268
269void
270mac_inpcb_sosetlabel(struct socket *so, struct inpcb *inp)
271{
272
273 INP_LOCK_ASSERT(inp);
274 SOCK_LOCK_ASSERT(so);
275 MAC_PERFORM(inpcb_sosetlabel, so, so->so_label, inp, inp->inp_label);
276}
277
278void
| 43
44#include "opt_mac.h"
45
46#include <sys/param.h>
47#include <sys/kernel.h>
48#include <sys/lock.h>
49#include <sys/malloc.h>
50#include <sys/mutex.h>
51#include <sys/sbuf.h>
52#include <sys/systm.h>
53#include <sys/mount.h>
54#include <sys/file.h>
55#include <sys/namei.h>
56#include <sys/protosw.h>
57#include <sys/socket.h>
58#include <sys/socketvar.h>
59#include <sys/sysctl.h>
60
61#include <net/if.h>
62#include <net/if_var.h>
63
64#include <netinet/in.h>
65#include <netinet/in_pcb.h>
66#include <netinet/ip_var.h>
67
68#include <security/mac/mac_framework.h>
69#include <security/mac/mac_internal.h>
70#include <security/mac/mac_policy.h>
71
72static struct label *
73mac_inpcb_label_alloc(int flag)
74{
75 struct label *label;
76 int error;
77
78 label = mac_labelzone_alloc(flag);
79 if (label == NULL)
80 return (NULL);
81 MAC_CHECK(inpcb_init_label, label, flag);
82 if (error) {
83 MAC_PERFORM(inpcb_destroy_label, label);
84 mac_labelzone_free(label);
85 return (NULL);
86 }
87 return (label);
88}
89
90int
91mac_inpcb_init(struct inpcb *inp, int flag)
92{
93
94 inp->inp_label = mac_inpcb_label_alloc(flag);
95 if (inp->inp_label == NULL)
96 return (ENOMEM);
97 return (0);
98}
99
100static struct label *
101mac_ipq_label_alloc(int flag)
102{
103 struct label *label;
104 int error;
105
106 label = mac_labelzone_alloc(flag);
107 if (label == NULL)
108 return (NULL);
109
110 MAC_CHECK(ipq_init_label, label, flag);
111 if (error) {
112 MAC_PERFORM(ipq_destroy_label, label);
113 mac_labelzone_free(label);
114 return (NULL);
115 }
116 return (label);
117}
118
119int
120mac_ipq_init(struct ipq *ipq, int flag)
121{
122
123 ipq->ipq_label = mac_ipq_label_alloc(flag);
124 if (ipq->ipq_label == NULL)
125 return (ENOMEM);
126 return (0);
127}
128
129static void
130mac_inpcb_label_free(struct label *label)
131{
132
133 MAC_PERFORM(inpcb_destroy_label, label);
134 mac_labelzone_free(label);
135}
136
137void
138mac_inpcb_destroy(struct inpcb *inp)
139{
140
141 mac_inpcb_label_free(inp->inp_label);
142 inp->inp_label = NULL;
143}
144
145static void
146mac_ipq_label_free(struct label *label)
147{
148
149 MAC_PERFORM(ipq_destroy_label, label);
150 mac_labelzone_free(label);
151}
152
153void
154mac_ipq_destroy(struct ipq *ipq)
155{
156
157 mac_ipq_label_free(ipq->ipq_label);
158 ipq->ipq_label = NULL;
159}
160
161void
162mac_inpcb_create(struct socket *so, struct inpcb *inp)
163{
164
165 MAC_PERFORM(inpcb_create, so, so->so_label, inp, inp->inp_label);
166}
167
168void
169mac_ipq_reassemble(struct ipq *ipq, struct mbuf *m)
170{
171 struct label *label;
172
173 label = mac_mbuf_to_label(m);
174
175 MAC_PERFORM(ipq_reassemble, ipq, ipq->ipq_label, m, label);
176}
177
178void
179mac_netinet_fragment(struct mbuf *m, struct mbuf *frag)
180{
181 struct label *mlabel, *fraglabel;
182
183 mlabel = mac_mbuf_to_label(m);
184 fraglabel = mac_mbuf_to_label(frag);
185
186 MAC_PERFORM(netinet_fragment, m, mlabel, frag, fraglabel);
187}
188
189void
190mac_ipq_create(struct mbuf *m, struct ipq *ipq)
191{
192 struct label *label;
193
194 label = mac_mbuf_to_label(m);
195
196 MAC_PERFORM(ipq_create, m, label, ipq, ipq->ipq_label);
197}
198
199void
200mac_inpcb_create_mbuf(struct inpcb *inp, struct mbuf *m)
201{
202 struct label *mlabel;
203
204 INP_LOCK_ASSERT(inp);
205 mlabel = mac_mbuf_to_label(m);
206
207 MAC_PERFORM(inpcb_create_mbuf, inp, inp->inp_label, m, mlabel);
208}
209
210int
211mac_ipq_match(struct mbuf *m, struct ipq *ipq)
212{
213 struct label *label;
214 int result;
215
216 label = mac_mbuf_to_label(m);
217
218 result = 1;
219 MAC_BOOLEAN(ipq_match, &&, m, label, ipq, ipq->ipq_label);
220
221 return (result);
222}
223
224void
225mac_netinet_icmp_reply(struct mbuf *m)
226{
227 struct label *label;
228
229 label = mac_mbuf_to_label(m);
230
231 MAC_PERFORM(netinet_icmp_reply, m, label);
232}
233
234void
235mac_netinet_tcp_reply(struct mbuf *m)
236{
237 struct label *label;
238
239 label = mac_mbuf_to_label(m);
240
241 MAC_PERFORM(netinet_tcp_reply, m, label);
242}
243
244void
245mac_ipq_update(struct mbuf *m, struct ipq *ipq)
246{
247 struct label *label;
248
249 label = mac_mbuf_to_label(m);
250
251 MAC_PERFORM(ipq_update, m, label, ipq, ipq->ipq_label);
252}
253
254int
255mac_inpcb_check_deliver(struct inpcb *inp, struct mbuf *m)
256{
257 struct label *label;
258 int error;
259
260 M_ASSERTPKTHDR(m);
261
262 label = mac_mbuf_to_label(m);
263
264 MAC_CHECK(inpcb_check_deliver, inp, inp->inp_label, m, label);
265
266 return (error);
267}
268
269void
270mac_inpcb_sosetlabel(struct socket *so, struct inpcb *inp)
271{
272
273 INP_LOCK_ASSERT(inp);
274 SOCK_LOCK_ASSERT(so);
275 MAC_PERFORM(inpcb_sosetlabel, so, so->so_label, inp, inp->inp_label);
276}
277
278void
|
286}
287
288/*
289 * These functions really should be referencing the syncache structure
290 * instead of the label. However, due to some of the complexities associated
291 * with exposing this syncache structure we operate directly on it's label
292 * pointer. This should be OK since we aren't making any access control
293 * decisions within this code directly, we are merely allocating and copying
294 * label storage so we can properly initialize mbuf labels for any packets
295 * the syncache code might create.
296 */
297void
298mac_syncache_destroy(struct label **label)
299{
300
301 MAC_PERFORM(syncache_destroy_label, *label);
302 mac_labelzone_free(*label);
303 *label = NULL;
304}
305
306int
307mac_syncache_init(struct label **label)
308{
309 int error;
310
311 *label = mac_labelzone_alloc(M_NOWAIT);
312 if (*label == NULL)
313 return (ENOMEM);
314 /*
315 * Since we are holding the inpcb locks the policy can not allocate
316 * policy specific label storage using M_WAITOK. So we need to do a
317 * MAC_CHECK instead of the typical MAC_PERFORM so we can propagate
318 * allocation failures back to the syncache code.
319 */
320 MAC_CHECK(syncache_init_label, *label, M_NOWAIT);
321 return (error);
322}
323
324void
325mac_syncache_create(struct label *label, struct inpcb *inp)
326{
327
328 INP_LOCK_ASSERT(inp);
329 MAC_PERFORM(syncache_create, label, inp);
330}
331
332void
333mac_syncache_create_mbuf(struct label *sc_label, struct mbuf *m)
334{
335 struct label *mlabel;
336
337 M_ASSERTPKTHDR(m);
338 mlabel = mac_mbuf_to_label(m);
339 MAC_PERFORM(syncache_create_mbuf, sc_label, m, mlabel);
340}
| 286}
287
288/*
289 * These functions really should be referencing the syncache structure
290 * instead of the label. However, due to some of the complexities associated
291 * with exposing this syncache structure we operate directly on it's label
292 * pointer. This should be OK since we aren't making any access control
293 * decisions within this code directly, we are merely allocating and copying
294 * label storage so we can properly initialize mbuf labels for any packets
295 * the syncache code might create.
296 */
297void
298mac_syncache_destroy(struct label **label)
299{
300
301 MAC_PERFORM(syncache_destroy_label, *label);
302 mac_labelzone_free(*label);
303 *label = NULL;
304}
305
306int
307mac_syncache_init(struct label **label)
308{
309 int error;
310
311 *label = mac_labelzone_alloc(M_NOWAIT);
312 if (*label == NULL)
313 return (ENOMEM);
314 /*
315 * Since we are holding the inpcb locks the policy can not allocate
316 * policy specific label storage using M_WAITOK. So we need to do a
317 * MAC_CHECK instead of the typical MAC_PERFORM so we can propagate
318 * allocation failures back to the syncache code.
319 */
320 MAC_CHECK(syncache_init_label, *label, M_NOWAIT);
321 return (error);
322}
323
324void
325mac_syncache_create(struct label *label, struct inpcb *inp)
326{
327
328 INP_LOCK_ASSERT(inp);
329 MAC_PERFORM(syncache_create, label, inp);
330}
331
332void
333mac_syncache_create_mbuf(struct label *sc_label, struct mbuf *m)
334{
335 struct label *mlabel;
336
337 M_ASSERTPKTHDR(m);
338 mlabel = mac_mbuf_to_label(m);
339 MAC_PERFORM(syncache_create_mbuf, sc_label, m, mlabel);
340}
|