FreeBSD/Linux Kernel Cross Reference
sys/sys/mac_policy.h
1 /*-
2 * Copyright (c) 1999, 2000, 2001, 2002 Robert N. M. Watson
3 * Copyright (c) 2001, 2002, 2003 Networks Associates Technology, Inc.
4 * All rights reserved.
5 *
6 * This software was developed by Robert Watson for the TrustedBSD Project.
7 *
8 * This software was developed for the FreeBSD Project in part by Network
9 * Associates Laboratories, the Security Research Division of Network
10 * Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"),
11 * as part of the DARPA CHATS research program.
12 *
13 * Redistribution and use in source and binary forms, with or without
14 * modification, are permitted provided that the following conditions
15 * are met:
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 *
34 * $FreeBSD: releng/5.1/sys/sys/mac_policy.h 113681 2003-04-18 19:57:37Z rwatson $
35 */
36 /*
37 * Kernel interface for MAC policy modules.
38 */
39 #ifndef _SYS_MAC_POLICY_H
40 #define _SYS_MAC_POLICY_H
41
42 /*-
43 * Pluggable access control policy definition structure.
44 *
45 * List of operations that are performed as part of the implementation
46 * of a MAC policy. Policy implementors declare operations with a
47 * mac_policy_ops structure, and using the MAC_POLICY_SET() macro.
48 * If an entry point is not declared, then then the policy will be ignored
49 * during evaluation of that event or check.
50 *
51 * Operations are sorted first by general class of operation, then
52 * alphabetically.
53 */
54 struct mac_policy_conf;
55 struct mac_policy_ops {
56 /*
57 * Policy module operations.
58 */
59 void (*mpo_destroy)(struct mac_policy_conf *mpc);
60 void (*mpo_init)(struct mac_policy_conf *mpc);
61
62 /*
63 * General policy-directed security system call so that policies
64 * may implement new services without reserving explicit
65 * system call numbers.
66 */
67 int (*mpo_syscall)(struct thread *td, int call, void *arg);
68
69 /*
70 * Label operations.
71 */
72 void (*mpo_init_bpfdesc_label)(struct label *label);
73 void (*mpo_init_cred_label)(struct label *label);
74 void (*mpo_init_devfsdirent_label)(struct label *label);
75 void (*mpo_init_ifnet_label)(struct label *label);
76 int (*mpo_init_ipq_label)(struct label *label, int flag);
77 int (*mpo_init_mbuf_label)(struct label *label, int flag);
78 void (*mpo_init_mount_label)(struct label *label);
79 void (*mpo_init_mount_fs_label)(struct label *label);
80 int (*mpo_init_socket_label)(struct label *label, int flag);
81 int (*mpo_init_socket_peer_label)(struct label *label, int flag);
82 void (*mpo_init_pipe_label)(struct label *label);
83 void (*mpo_init_proc_label)(struct label *label);
84 void (*mpo_init_vnode_label)(struct label *label);
85 void (*mpo_destroy_bpfdesc_label)(struct label *label);
86 void (*mpo_destroy_cred_label)(struct label *label);
87 void (*mpo_destroy_devfsdirent_label)(struct label *label);
88 void (*mpo_destroy_ifnet_label)(struct label *label);
89 void (*mpo_destroy_ipq_label)(struct label *label);
90 void (*mpo_destroy_mbuf_label)(struct label *label);
91 void (*mpo_destroy_mount_label)(struct label *label);
92 void (*mpo_destroy_mount_fs_label)(struct label *label);
93 void (*mpo_destroy_socket_label)(struct label *label);
94 void (*mpo_destroy_socket_peer_label)(struct label *label);
95 void (*mpo_destroy_pipe_label)(struct label *label);
96 void (*mpo_destroy_proc_label)(struct label *label);
97 void (*mpo_destroy_vnode_label)(struct label *label);
98 void (*mpo_copy_mbuf_label)(struct label *src,
99 struct label *dest);
100 void (*mpo_copy_pipe_label)(struct label *src,
101 struct label *dest);
102 void (*mpo_copy_vnode_label)(struct label *src,
103 struct label *dest);
104 int (*mpo_externalize_cred_label)(struct label *label,
105 char *element_name, char *buffer, size_t buflen,
106 size_t *len, int *claimed);
107 int (*mpo_externalize_ifnet_label)(struct label *label,
108 char *element_name, char *buffer, size_t buflen,
109 size_t *len, int *claimed);
110 int (*mpo_externalize_pipe_label)(struct label *label,
111 char *element_name, char *buffer, size_t buflen,
112 size_t *len, int *claimed);
113 int (*mpo_externalize_socket_label)(struct label *label,
114 char *element_name, char *buffer, size_t buflen,
115 size_t *len, int *claimed);
116 int (*mpo_externalize_socket_peer_label)(struct label *label,
117 char *element_name, char *buffer, size_t buflen,
118 size_t *len, int *claimed);
119 int (*mpo_externalize_vnode_label)(struct label *label,
120 char *element_name, char *buffer, size_t buflen,
121 size_t *len, int *claimed);
122 int (*mpo_internalize_cred_label)(struct label *label,
123 char *element_name, char *element_data, int *claimed);
124 int (*mpo_internalize_ifnet_label)(struct label *label,
125 char *element_name, char *element_data, int *claimed);
126 int (*mpo_internalize_pipe_label)(struct label *label,
127 char *element_name, char *element_data, int *claimed);
128 int (*mpo_internalize_socket_label)(struct label *label,
129 char *element_name, char *element_data, int *claimed);
130 int (*mpo_internalize_vnode_label)(struct label *label,
131 char *element_name, char *element_data, int *claimed);
132
133 /*
134 * Labeling event operations: file system objects, and things that
135 * look a lot like file system objects.
136 */
137 void (*mpo_associate_vnode_devfs)(struct mount *mp,
138 struct label *fslabel, struct devfs_dirent *de,
139 struct label *delabel, struct vnode *vp,
140 struct label *vlabel);
141 int (*mpo_associate_vnode_extattr)(struct mount *mp,
142 struct label *fslabel, struct vnode *vp,
143 struct label *vlabel);
144 void (*mpo_associate_vnode_singlelabel)(struct mount *mp,
145 struct label *fslabel, struct vnode *vp,
146 struct label *vlabel);
147 void (*mpo_create_devfs_device)(struct mount *mp, dev_t dev,
148 struct devfs_dirent *de, struct label *label);
149 void (*mpo_create_devfs_directory)(struct mount *mp, char *dirname,
150 int dirnamelen, struct devfs_dirent *de,
151 struct label *label);
152 void (*mpo_create_devfs_symlink)(struct ucred *cred,
153 struct mount *mp, struct devfs_dirent *dd,
154 struct label *ddlabel, struct devfs_dirent *de,
155 struct label *delabel);
156 int (*mpo_create_vnode_extattr)(struct ucred *cred,
157 struct mount *mp, struct label *fslabel,
158 struct vnode *dvp, struct label *dlabel,
159 struct vnode *vp, struct label *vlabel,
160 struct componentname *cnp);
161 void (*mpo_create_mount)(struct ucred *cred, struct mount *mp,
162 struct label *mntlabel, struct label *fslabel);
163 void (*mpo_create_root_mount)(struct ucred *cred, struct mount *mp,
164 struct label *mountlabel, struct label *fslabel);
165 void (*mpo_relabel_vnode)(struct ucred *cred, struct vnode *vp,
166 struct label *vnodelabel, struct label *label);
167 int (*mpo_setlabel_vnode_extattr)(struct ucred *cred,
168 struct vnode *vp, struct label *vlabel,
169 struct label *intlabel);
170 void (*mpo_update_devfsdirent)(struct mount *mp,
171 struct devfs_dirent *devfs_dirent,
172 struct label *direntlabel, struct vnode *vp,
173 struct label *vnodelabel);
174
175 /*
176 * Labeling event operations: IPC objects.
177 */
178 void (*mpo_create_mbuf_from_socket)(struct socket *so,
179 struct label *socketlabel, struct mbuf *m,
180 struct label *mbuflabel);
181 void (*mpo_create_socket)(struct ucred *cred, struct socket *so,
182 struct label *socketlabel);
183 void (*mpo_create_socket_from_socket)(struct socket *oldsocket,
184 struct label *oldsocketlabel, struct socket *newsocket,
185 struct label *newsocketlabel);
186 void (*mpo_relabel_socket)(struct ucred *cred, struct socket *so,
187 struct label *oldlabel, struct label *newlabel);
188 void (*mpo_relabel_pipe)(struct ucred *cred, struct pipe *pipe,
189 struct label *oldlabel, struct label *newlabel);
190 void (*mpo_set_socket_peer_from_mbuf)(struct mbuf *mbuf,
191 struct label *mbuflabel, struct socket *so,
192 struct label *socketpeerlabel);
193 void (*mpo_set_socket_peer_from_socket)(struct socket *oldsocket,
194 struct label *oldsocketlabel, struct socket *newsocket,
195 struct label *newsocketpeerlabel);
196 void (*mpo_create_pipe)(struct ucred *cred, struct pipe *pipe,
197 struct label *pipelabel);
198
199 /*
200 * Labeling event operations: network objects.
201 */
202 void (*mpo_create_bpfdesc)(struct ucred *cred, struct bpf_d *bpf_d,
203 struct label *bpflabel);
204 void (*mpo_create_ifnet)(struct ifnet *ifnet,
205 struct label *ifnetlabel);
206 void (*mpo_create_ipq)(struct mbuf *fragment,
207 struct label *fragmentlabel, struct ipq *ipq,
208 struct label *ipqlabel);
209 void (*mpo_create_datagram_from_ipq)
210 (struct ipq *ipq, struct label *ipqlabel,
211 struct mbuf *datagram, struct label *datagramlabel);
212 void (*mpo_create_fragment)(struct mbuf *datagram,
213 struct label *datagramlabel, struct mbuf *fragment,
214 struct label *fragmentlabel);
215 void (*mpo_create_mbuf_from_mbuf)(struct mbuf *oldmbuf,
216 struct label *oldlabel, struct mbuf *newmbuf,
217 struct label *newlabel);
218 void (*mpo_create_mbuf_linklayer)(struct ifnet *ifnet,
219 struct label *ifnetlabel, struct mbuf *mbuf,
220 struct label *mbuflabel);
221 void (*mpo_create_mbuf_from_bpfdesc)(struct bpf_d *bpf_d,
222 struct label *bpflabel, struct mbuf *mbuf,
223 struct label *mbuflabel);
224 void (*mpo_create_mbuf_from_ifnet)(struct ifnet *ifnet,
225 struct label *ifnetlabel, struct mbuf *mbuf,
226 struct label *mbuflabel);
227 void (*mpo_create_mbuf_multicast_encap)(struct mbuf *oldmbuf,
228 struct label *oldmbuflabel, struct ifnet *ifnet,
229 struct label *ifnetlabel, struct mbuf *newmbuf,
230 struct label *newmbuflabel);
231 void (*mpo_create_mbuf_netlayer)(struct mbuf *oldmbuf,
232 struct label *oldmbuflabel, struct mbuf *newmbuf,
233 struct label *newmbuflabel);
234 int (*mpo_fragment_match)(struct mbuf *fragment,
235 struct label *fragmentlabel, struct ipq *ipq,
236 struct label *ipqlabel);
237 void (*mpo_relabel_ifnet)(struct ucred *cred, struct ifnet *ifnet,
238 struct label *ifnetlabel, struct label *newlabel);
239 void (*mpo_update_ipq)(struct mbuf *fragment,
240 struct label *fragmentlabel, struct ipq *ipq,
241 struct label *ipqlabel);
242
243 /*
244 * Labeling event operations: processes.
245 */
246 void (*mpo_create_cred)(struct ucred *parent_cred,
247 struct ucred *child_cred);
248 void (*mpo_execve_transition)(struct ucred *old, struct ucred *new,
249 struct vnode *vp, struct label *vnodelabel,
250 struct label *interpvnodelabel,
251 struct image_params *imgp, struct label *execlabel);
252 int (*mpo_execve_will_transition)(struct ucred *old,
253 struct vnode *vp, struct label *vnodelabel,
254 struct label *interpvnodelabel,
255 struct image_params *imgp, struct label *execlabel);
256 void (*mpo_create_proc0)(struct ucred *cred);
257 void (*mpo_create_proc1)(struct ucred *cred);
258 void (*mpo_relabel_cred)(struct ucred *cred,
259 struct label *newlabel);
260 void (*mpo_thread_userret)(struct thread *thread);
261
262 /*
263 * Access control checks.
264 */
265 int (*mpo_check_bpfdesc_receive)(struct bpf_d *bpf_d,
266 struct label *bpflabel, struct ifnet *ifnet,
267 struct label *ifnetlabel);
268 int (*mpo_check_cred_relabel)(struct ucred *cred,
269 struct label *newlabel);
270 int (*mpo_check_cred_visible)(struct ucred *u1, struct ucred *u2);
271 int (*mpo_check_ifnet_relabel)(struct ucred *cred,
272 struct ifnet *ifnet, struct label *ifnetlabel,
273 struct label *newlabel);
274 int (*mpo_check_ifnet_transmit)(struct ifnet *ifnet,
275 struct label *ifnetlabel, struct mbuf *m,
276 struct label *mbuflabel);
277 int (*mpo_check_kenv_dump)(struct ucred *cred);
278 int (*mpo_check_kenv_get)(struct ucred *cred, char *name);
279 int (*mpo_check_kenv_set)(struct ucred *cred, char *name,
280 char *value);
281 int (*mpo_check_kenv_unset)(struct ucred *cred, char *name);
282 int (*mpo_check_kld_load)(struct ucred *cred, struct vnode *vp,
283 struct label *vlabel);
284 int (*mpo_check_kld_stat)(struct ucred *cred);
285 int (*mpo_check_kld_unload)(struct ucred *cred);
286 int (*mpo_check_mount_stat)(struct ucred *cred, struct mount *mp,
287 struct label *mntlabel);
288 int (*mpo_check_pipe_ioctl)(struct ucred *cred, struct pipe *pipe,
289 struct label *pipelabel, unsigned long cmd, void *data);
290 int (*mpo_check_pipe_poll)(struct ucred *cred, struct pipe *pipe,
291 struct label *pipelabel);
292 int (*mpo_check_pipe_read)(struct ucred *cred, struct pipe *pipe,
293 struct label *pipelabel);
294 int (*mpo_check_pipe_relabel)(struct ucred *cred,
295 struct pipe *pipe, struct label *pipelabel,
296 struct label *newlabel);
297 int (*mpo_check_pipe_stat)(struct ucred *cred, struct pipe *pipe,
298 struct label *pipelabel);
299 int (*mpo_check_pipe_write)(struct ucred *cred, struct pipe *pipe,
300 struct label *pipelabel);
301 int (*mpo_check_proc_debug)(struct ucred *cred,
302 struct proc *proc);
303 int (*mpo_check_proc_sched)(struct ucred *cred,
304 struct proc *proc);
305 int (*mpo_check_proc_signal)(struct ucred *cred,
306 struct proc *proc, int signum);
307 int (*mpo_check_socket_bind)(struct ucred *cred,
308 struct socket *so, struct label *socketlabel,
309 struct sockaddr *sockaddr);
310 int (*mpo_check_socket_connect)(struct ucred *cred,
311 struct socket *so, struct label *socketlabel,
312 struct sockaddr *sockaddr);
313 int (*mpo_check_socket_deliver)(struct socket *so,
314 struct label *socketlabel, struct mbuf *m,
315 struct label *mbuflabel);
316 int (*mpo_check_socket_listen)(struct ucred *cred,
317 struct socket *so, struct label *socketlabel);
318 int (*mpo_check_socket_receive)(struct ucred *cred,
319 struct socket *so, struct label *socketlabel);
320 int (*mpo_check_socket_relabel)(struct ucred *cred,
321 struct socket *so, struct label *socketlabel,
322 struct label *newlabel);
323 int (*mpo_check_socket_send)(struct ucred *cred,
324 struct socket *so, struct label *socketlabel);
325 int (*mpo_check_socket_visible)(struct ucred *cred,
326 struct socket *so, struct label *socketlabel);
327 int (*mpo_check_sysarch_ioperm)(struct ucred *cred);
328 int (*mpo_check_system_acct)(struct ucred *cred,
329 struct vnode *vp, struct label *vlabel);
330 int (*mpo_check_system_nfsd)(struct ucred *cred);
331 int (*mpo_check_system_reboot)(struct ucred *cred, int howto);
332 int (*mpo_check_system_settime)(struct ucred *cred);
333 int (*mpo_check_system_swapon)(struct ucred *cred,
334 struct vnode *vp, struct label *label);
335 int (*mpo_check_system_swapoff)(struct ucred *cred,
336 struct vnode *vp, struct label *label);
337 int (*mpo_check_system_sysctl)(struct ucred *cred, int *name,
338 u_int namelen, void *old, size_t *oldlenp, int inkernel,
339 void *new, size_t newlen);
340 int (*mpo_check_vnode_access)(struct ucred *cred,
341 struct vnode *vp, struct label *label, int acc_mode);
342 int (*mpo_check_vnode_chdir)(struct ucred *cred,
343 struct vnode *dvp, struct label *dlabel);
344 int (*mpo_check_vnode_chroot)(struct ucred *cred,
345 struct vnode *dvp, struct label *dlabel);
346 int (*mpo_check_vnode_create)(struct ucred *cred,
347 struct vnode *dvp, struct label *dlabel,
348 struct componentname *cnp, struct vattr *vap);
349 int (*mpo_check_vnode_delete)(struct ucred *cred,
350 struct vnode *dvp, struct label *dlabel,
351 struct vnode *vp, struct label *label,
352 struct componentname *cnp);
353 int (*mpo_check_vnode_deleteacl)(struct ucred *cred,
354 struct vnode *vp, struct label *label, acl_type_t type);
355 int (*mpo_check_vnode_exec)(struct ucred *cred, struct vnode *vp,
356 struct label *label, struct image_params *imgp,
357 struct label *execlabel);
358 int (*mpo_check_vnode_getacl)(struct ucred *cred,
359 struct vnode *vp, struct label *label, acl_type_t type);
360 int (*mpo_check_vnode_getextattr)(struct ucred *cred,
361 struct vnode *vp, struct label *label, int attrnamespace,
362 const char *name, struct uio *uio);
363 int (*mpo_check_vnode_link)(struct ucred *cred, struct vnode *dvp,
364 struct label *dlabel, struct vnode *vp,
365 struct label *label, struct componentname *cnp);
366 int (*mpo_check_vnode_lookup)(struct ucred *cred,
367 struct vnode *dvp, struct label *dlabel,
368 struct componentname *cnp);
369 int (*mpo_check_vnode_mmap)(struct ucred *cred, struct vnode *vp,
370 struct label *label, int prot);
371 void (*mpo_check_vnode_mmap_downgrade)(struct ucred *cred,
372 struct vnode *vp, struct label *label, int *prot);
373 int (*mpo_check_vnode_mprotect)(struct ucred *cred,
374 struct vnode *vp, struct label *label, int prot);
375 int (*mpo_check_vnode_open)(struct ucred *cred, struct vnode *vp,
376 struct label *label, int acc_mode);
377 int (*mpo_check_vnode_poll)(struct ucred *active_cred,
378 struct ucred *file_cred, struct vnode *vp,
379 struct label *label);
380 int (*mpo_check_vnode_read)(struct ucred *active_cred,
381 struct ucred *file_cred, struct vnode *vp,
382 struct label *label);
383 int (*mpo_check_vnode_readdir)(struct ucred *cred,
384 struct vnode *dvp, struct label *dlabel);
385 int (*mpo_check_vnode_readlink)(struct ucred *cred,
386 struct vnode *vp, struct label *label);
387 int (*mpo_check_vnode_relabel)(struct ucred *cred,
388 struct vnode *vp, struct label *vnodelabel,
389 struct label *newlabel);
390 int (*mpo_check_vnode_rename_from)(struct ucred *cred,
391 struct vnode *dvp, struct label *dlabel, struct vnode *vp,
392 struct label *label, struct componentname *cnp);
393 int (*mpo_check_vnode_rename_to)(struct ucred *cred,
394 struct vnode *dvp, struct label *dlabel, struct vnode *vp,
395 struct label *label, int samedir,
396 struct componentname *cnp);
397 int (*mpo_check_vnode_revoke)(struct ucred *cred,
398 struct vnode *vp, struct label *label);
399 int (*mpo_check_vnode_setacl)(struct ucred *cred,
400 struct vnode *vp, struct label *label, acl_type_t type,
401 struct acl *acl);
402 int (*mpo_check_vnode_setextattr)(struct ucred *cred,
403 struct vnode *vp, struct label *label, int attrnamespace,
404 const char *name, struct uio *uio);
405 int (*mpo_check_vnode_setflags)(struct ucred *cred,
406 struct vnode *vp, struct label *label, u_long flags);
407 int (*mpo_check_vnode_setmode)(struct ucred *cred,
408 struct vnode *vp, struct label *label, mode_t mode);
409 int (*mpo_check_vnode_setowner)(struct ucred *cred,
410 struct vnode *vp, struct label *label, uid_t uid,
411 gid_t gid);
412 int (*mpo_check_vnode_setutimes)(struct ucred *cred,
413 struct vnode *vp, struct label *label,
414 struct timespec atime, struct timespec mtime);
415 int (*mpo_check_vnode_stat)(struct ucred *active_cred,
416 struct ucred *file_cred, struct vnode *vp,
417 struct label *label);
418 int (*mpo_check_vnode_write)(struct ucred *active_cred,
419 struct ucred *file_cred, struct vnode *vp,
420 struct label *label);
421 };
422
423 struct mac_policy_conf {
424 char *mpc_name; /* policy name */
425 char *mpc_fullname; /* policy full name */
426 struct mac_policy_ops *mpc_ops; /* policy operations */
427 int mpc_loadtime_flags; /* flags */
428 int *mpc_field_off; /* security field */
429 int mpc_runtime_flags; /* flags */
430 LIST_ENTRY(mac_policy_conf) mpc_list; /* global list */
431 };
432
433 /* Flags for the mpc_loadtime_flags field. */
434 #define MPC_LOADTIME_FLAG_NOTLATE 0x00000001
435 #define MPC_LOADTIME_FLAG_UNLOADOK 0x00000002
436 #define MPC_LOADTIME_FLAG_LABELMBUFS 0x00000004
437
438 /* Flags for the mpc_runtime_flags field. */
439 #define MPC_RUNTIME_FLAG_REGISTERED 0x00000001
440
441 #define MAC_POLICY_SET(mpops, mpname, mpfullname, mpflags, privdata_wanted) \
442 static struct mac_policy_conf mpname##_mac_policy_conf = { \
443 #mpname, \
444 mpfullname, \
445 mpops, \
446 mpflags, \
447 privdata_wanted, \
448 0, \
449 }; \
450 static moduledata_t mpname##_mod = { \
451 #mpname, \
452 mac_policy_modevent, \
453 &mpname##_mac_policy_conf \
454 }; \
455 MODULE_DEPEND(mpname, kernel_mac_support, 1, 1, 1); \
456 DECLARE_MODULE(mpname, mpname##_mod, SI_SUB_MAC_POLICY, \
457 SI_ORDER_MIDDLE)
458
459 int mac_policy_modevent(module_t mod, int type, void *data);
460
461 #define LABEL_TO_SLOT(l, s) (l)->l_perpolicy[s]
462
463 #endif /* !_SYS_MAC_POLICY_H */
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