FreeBSD/Linux Kernel Cross Reference
sys/sys/mac_policy.h
1 /*-
2 * Copyright (c) 1999-2002 Robert N. M. Watson
3 * Copyright (c) 2001-2004 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: src/sys/sys/mac_policy.h,v 1.55.2.3 2005/05/18 00:32:05 csjp Exp $
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 acl;
55 struct bpf_d;
56 struct componentname;
57 struct devfs_dirent;
58 struct ifnet;
59 struct image_params;
60 struct inpcb;
61 struct ipq;
62 struct label;
63 struct mac_policy_conf;
64 struct mbuf;
65 struct mount;
66 struct pipepair;
67 struct proc;
68 struct sbuf;
69 struct sockaddr;
70 struct socket;
71 struct sysctl_oid;
72 struct sysctl_req;
73 struct thread;
74 struct ucred;
75 struct uio;
76 struct vattr;
77 struct vnode;
78 struct mac_policy_ops {
79 /*
80 * Policy module operations.
81 */
82 void (*mpo_destroy)(struct mac_policy_conf *mpc);
83 void (*mpo_init)(struct mac_policy_conf *mpc);
84
85 /*
86 * General policy-directed security system call so that policies may
87 * implement new services without reserving explicit system call
88 * numbers.
89 */
90 int (*mpo_syscall)(struct thread *td, int call, void *arg);
91
92 /*
93 * Label operations. Initialize label storage, destroy label
94 * storage, recycle for re-use without init/destroy, copy a label to
95 * initialized storage, and externalize/internalize from/to
96 * initialized storage.
97 */
98 void (*mpo_init_bpfdesc_label)(struct label *label);
99 void (*mpo_init_cred_label)(struct label *label);
100 void (*mpo_init_devfsdirent_label)(struct label *label);
101 void (*mpo_init_ifnet_label)(struct label *label);
102 int (*mpo_init_inpcb_label)(struct label *label, int flag);
103 int (*mpo_init_ipq_label)(struct label *label, int flag);
104 int (*mpo_init_mbuf_label)(struct label *label, int flag);
105 void (*mpo_init_mount_label)(struct label *label);
106 void (*mpo_init_mount_fs_label)(struct label *label);
107 int (*mpo_init_socket_label)(struct label *label, int flag);
108 int (*mpo_init_socket_peer_label)(struct label *label, int flag);
109 void (*mpo_init_pipe_label)(struct label *label);
110 void (*mpo_init_proc_label)(struct label *label);
111 void (*mpo_init_vnode_label)(struct label *label);
112 void (*mpo_destroy_bpfdesc_label)(struct label *label);
113 void (*mpo_destroy_cred_label)(struct label *label);
114 void (*mpo_destroy_devfsdirent_label)(struct label *label);
115 void (*mpo_destroy_ifnet_label)(struct label *label);
116 void (*mpo_destroy_inpcb_label)(struct label *label);
117 void (*mpo_destroy_ipq_label)(struct label *label);
118 void (*mpo_destroy_mbuf_label)(struct label *label);
119 void (*mpo_destroy_mount_label)(struct label *label);
120 void (*mpo_destroy_mount_fs_label)(struct label *label);
121 void (*mpo_destroy_socket_label)(struct label *label);
122 void (*mpo_destroy_socket_peer_label)(struct label *label);
123 void (*mpo_destroy_pipe_label)(struct label *label);
124 void (*mpo_destroy_proc_label)(struct label *label);
125 void (*mpo_destroy_vnode_label)(struct label *label);
126 void (*mpo_copy_cred_label)(struct label *src,
127 struct label *dest);
128 void (*mpo_copy_ifnet_label)(struct label *src,
129 struct label *dest);
130 void (*mpo_copy_mbuf_label)(struct label *src,
131 struct label *dest);
132 void (*mpo_copy_pipe_label)(struct label *src,
133 struct label *dest);
134 void (*mpo_copy_socket_label)(struct label *src,
135 struct label *dest);
136 void (*mpo_copy_vnode_label)(struct label *src,
137 struct label *dest);
138 int (*mpo_externalize_cred_label)(struct label *label,
139 char *element_name, struct sbuf *sb, int *claimed);
140 int (*mpo_externalize_ifnet_label)(struct label *label,
141 char *element_name, struct sbuf *sb, int *claimed);
142 int (*mpo_externalize_pipe_label)(struct label *label,
143 char *element_name, struct sbuf *sb, int *claimed);
144 int (*mpo_externalize_socket_label)(struct label *label,
145 char *element_name, struct sbuf *sb, int *claimed);
146 int (*mpo_externalize_socket_peer_label)(struct label *label,
147 char *element_name, struct sbuf *sb, int *claimed);
148 int (*mpo_externalize_vnode_label)(struct label *label,
149 char *element_name, struct sbuf *sb, int *claimed);
150 int (*mpo_internalize_cred_label)(struct label *label,
151 char *element_name, char *element_data, int *claimed);
152 int (*mpo_internalize_ifnet_label)(struct label *label,
153 char *element_name, char *element_data, int *claimed);
154 int (*mpo_internalize_pipe_label)(struct label *label,
155 char *element_name, char *element_data, int *claimed);
156 int (*mpo_internalize_socket_label)(struct label *label,
157 char *element_name, char *element_data, int *claimed);
158 int (*mpo_internalize_vnode_label)(struct label *label,
159 char *element_name, char *element_data, int *claimed);
160
161 /*
162 * Labeling event operations: file system objects, and things that
163 * look a lot like file system objects.
164 */
165 void (*mpo_associate_vnode_devfs)(struct mount *mp,
166 struct label *fslabel, struct devfs_dirent *de,
167 struct label *delabel, struct vnode *vp,
168 struct label *vlabel);
169 int (*mpo_associate_vnode_extattr)(struct mount *mp,
170 struct label *fslabel, struct vnode *vp,
171 struct label *vlabel);
172 void (*mpo_associate_vnode_singlelabel)(struct mount *mp,
173 struct label *fslabel, struct vnode *vp,
174 struct label *vlabel);
175 void (*mpo_create_devfs_device)(struct mount *mp, struct cdev *dev,
176 struct devfs_dirent *de, struct label *label);
177 void (*mpo_create_devfs_directory)(struct mount *mp, char *dirname,
178 int dirnamelen, struct devfs_dirent *de,
179 struct label *label);
180 void (*mpo_create_devfs_symlink)(struct ucred *cred,
181 struct mount *mp, struct devfs_dirent *dd,
182 struct label *ddlabel, struct devfs_dirent *de,
183 struct label *delabel);
184 int (*mpo_create_vnode_extattr)(struct ucred *cred,
185 struct mount *mp, struct label *fslabel,
186 struct vnode *dvp, struct label *dlabel,
187 struct vnode *vp, struct label *vlabel,
188 struct componentname *cnp);
189 void (*mpo_create_mount)(struct ucred *cred, struct mount *mp,
190 struct label *mntlabel, struct label *fslabel);
191 void (*mpo_create_root_mount)(struct ucred *cred, struct mount *mp,
192 struct label *mountlabel, struct label *fslabel);
193 void (*mpo_relabel_vnode)(struct ucred *cred, struct vnode *vp,
194 struct label *vnodelabel, struct label *label);
195 int (*mpo_setlabel_vnode_extattr)(struct ucred *cred,
196 struct vnode *vp, struct label *vlabel,
197 struct label *intlabel);
198 void (*mpo_update_devfsdirent)(struct mount *mp,
199 struct devfs_dirent *devfs_dirent,
200 struct label *direntlabel, struct vnode *vp,
201 struct label *vnodelabel);
202
203 /*
204 * Labeling event operations: IPC objects.
205 */
206 void (*mpo_create_mbuf_from_socket)(struct socket *so,
207 struct label *socketlabel, struct mbuf *m,
208 struct label *mbuflabel);
209 void (*mpo_create_socket)(struct ucred *cred, struct socket *so,
210 struct label *socketlabel);
211 void (*mpo_create_socket_from_socket)(struct socket *oldsocket,
212 struct label *oldsocketlabel, struct socket *newsocket,
213 struct label *newsocketlabel);
214 void (*mpo_relabel_socket)(struct ucred *cred, struct socket *so,
215 struct label *oldlabel, struct label *newlabel);
216 void (*mpo_relabel_pipe)(struct ucred *cred, struct pipepair *pp,
217 struct label *oldlabel, struct label *newlabel);
218 void (*mpo_set_socket_peer_from_mbuf)(struct mbuf *mbuf,
219 struct label *mbuflabel, struct socket *so,
220 struct label *socketpeerlabel);
221 void (*mpo_set_socket_peer_from_socket)(struct socket *oldsocket,
222 struct label *oldsocketlabel, struct socket *newsocket,
223 struct label *newsocketpeerlabel);
224 void (*mpo_create_pipe)(struct ucred *cred, struct pipepair *pp,
225 struct label *pipelabel);
226
227 /*
228 * Labeling event operations: network objects.
229 */
230 void (*mpo_create_bpfdesc)(struct ucred *cred, struct bpf_d *bpf_d,
231 struct label *bpflabel);
232 void (*mpo_create_ifnet)(struct ifnet *ifnet,
233 struct label *ifnetlabel);
234 void (*mpo_create_inpcb_from_socket)(struct socket *so,
235 struct label *solabel, struct inpcb *inp,
236 struct label *inplabel);
237 void (*mpo_create_ipq)(struct mbuf *fragment,
238 struct label *fragmentlabel, struct ipq *ipq,
239 struct label *ipqlabel);
240 void (*mpo_create_datagram_from_ipq)
241 (struct ipq *ipq, struct label *ipqlabel,
242 struct mbuf *datagram, struct label *datagramlabel);
243 void (*mpo_create_fragment)(struct mbuf *datagram,
244 struct label *datagramlabel, struct mbuf *fragment,
245 struct label *fragmentlabel);
246 void (*mpo_create_mbuf_from_inpcb)(struct inpcb *inp,
247 struct label *inplabel, struct mbuf *m,
248 struct label *mlabel);
249 void (*mpo_create_mbuf_from_mbuf)(struct mbuf *oldmbuf,
250 struct label *oldlabel, struct mbuf *newmbuf,
251 struct label *newlabel);
252 void (*mpo_create_mbuf_linklayer)(struct ifnet *ifnet,
253 struct label *ifnetlabel, struct mbuf *mbuf,
254 struct label *mbuflabel);
255 void (*mpo_create_mbuf_from_bpfdesc)(struct bpf_d *bpf_d,
256 struct label *bpflabel, struct mbuf *mbuf,
257 struct label *mbuflabel);
258 void (*mpo_create_mbuf_from_ifnet)(struct ifnet *ifnet,
259 struct label *ifnetlabel, struct mbuf *mbuf,
260 struct label *mbuflabel);
261 void (*mpo_create_mbuf_multicast_encap)(struct mbuf *oldmbuf,
262 struct label *oldmbuflabel, struct ifnet *ifnet,
263 struct label *ifnetlabel, struct mbuf *newmbuf,
264 struct label *newmbuflabel);
265 void (*mpo_create_mbuf_netlayer)(struct mbuf *oldmbuf,
266 struct label *oldmbuflabel, struct mbuf *newmbuf,
267 struct label *newmbuflabel);
268 int (*mpo_fragment_match)(struct mbuf *fragment,
269 struct label *fragmentlabel, struct ipq *ipq,
270 struct label *ipqlabel);
271 void (*mpo_reflect_mbuf_icmp)(struct mbuf *m,
272 struct label *mlabel);
273 void (*mpo_reflect_mbuf_tcp)(struct mbuf *m, struct label *mlabel);
274 void (*mpo_relabel_ifnet)(struct ucred *cred, struct ifnet *ifnet,
275 struct label *ifnetlabel, struct label *newlabel);
276 void (*mpo_update_ipq)(struct mbuf *fragment,
277 struct label *fragmentlabel, struct ipq *ipq,
278 struct label *ipqlabel);
279 void (*mpo_inpcb_sosetlabel)(struct socket *so,
280 struct label *label, struct inpcb *inp,
281 struct label *inplabel);
282
283 /*
284 * Labeling event operations: processes.
285 */
286 void (*mpo_execve_transition)(struct ucred *old, struct ucred *new,
287 struct vnode *vp, struct label *vnodelabel,
288 struct label *interpvnodelabel,
289 struct image_params *imgp, struct label *execlabel);
290 int (*mpo_execve_will_transition)(struct ucred *old,
291 struct vnode *vp, struct label *vnodelabel,
292 struct label *interpvnodelabel,
293 struct image_params *imgp, struct label *execlabel);
294 void (*mpo_create_proc0)(struct ucred *cred);
295 void (*mpo_create_proc1)(struct ucred *cred);
296 void (*mpo_relabel_cred)(struct ucred *cred,
297 struct label *newlabel);
298 void (*mpo_thread_userret)(struct thread *thread);
299
300 /*
301 * Access control checks.
302 */
303 int (*mpo_check_bpfdesc_receive)(struct bpf_d *bpf_d,
304 struct label *bpflabel, struct ifnet *ifnet,
305 struct label *ifnetlabel);
306 int (*mpo_check_cred_relabel)(struct ucred *cred,
307 struct label *newlabel);
308 int (*mpo_check_cred_visible)(struct ucred *u1, struct ucred *u2);
309 int (*mpo_check_ifnet_relabel)(struct ucred *cred,
310 struct ifnet *ifnet, struct label *ifnetlabel,
311 struct label *newlabel);
312 int (*mpo_check_ifnet_transmit)(struct ifnet *ifnet,
313 struct label *ifnetlabel, struct mbuf *m,
314 struct label *mbuflabel);
315 int (*mpo_check_inpcb_deliver)(struct inpcb *inp,
316 struct label *inplabel, struct mbuf *m,
317 struct label *mlabel);
318 int (*mpo_check_kenv_dump)(struct ucred *cred);
319 int (*mpo_check_kenv_get)(struct ucred *cred, char *name);
320 int (*mpo_check_kenv_set)(struct ucred *cred, char *name,
321 char *value);
322 int (*mpo_check_kenv_unset)(struct ucred *cred, char *name);
323 int (*mpo_check_kld_load)(struct ucred *cred, struct vnode *vp,
324 struct label *vlabel);
325 int (*mpo_check_kld_stat)(struct ucred *cred);
326 int (*mpo_check_kld_unload)(struct ucred *cred);
327 int (*mpo_check_mount_stat)(struct ucred *cred, struct mount *mp,
328 struct label *mntlabel);
329 int (*mpo_check_pipe_ioctl)(struct ucred *cred,
330 struct pipepair *pp, struct label *pipelabel,
331 unsigned long cmd, void *data);
332 int (*mpo_check_pipe_poll)(struct ucred *cred,
333 struct pipepair *pp, struct label *pipelabel);
334 int (*mpo_check_pipe_read)(struct ucred *cred,
335 struct pipepair *pp, struct label *pipelabel);
336 int (*mpo_check_pipe_relabel)(struct ucred *cred,
337 struct pipepair *pp, struct label *pipelabel,
338 struct label *newlabel);
339 int (*mpo_check_pipe_stat)(struct ucred *cred,
340 struct pipepair *pp, struct label *pipelabel);
341 int (*mpo_check_pipe_write)(struct ucred *cred,
342 struct pipepair *pp, struct label *pipelabel);
343 int (*mpo_check_proc_debug)(struct ucred *cred,
344 struct proc *proc);
345 int (*mpo_check_proc_sched)(struct ucred *cred,
346 struct proc *proc);
347 int (*mpo_check_proc_signal)(struct ucred *cred,
348 struct proc *proc, int signum);
349 int (*mpo_check_socket_bind)(struct ucred *cred,
350 struct socket *so, struct label *socketlabel,
351 struct sockaddr *sockaddr);
352 int (*mpo_check_socket_connect)(struct ucred *cred,
353 struct socket *so, struct label *socketlabel,
354 struct sockaddr *sockaddr);
355 int (*mpo_check_socket_deliver)(struct socket *so,
356 struct label *socketlabel, struct mbuf *m,
357 struct label *mbuflabel);
358 int (*mpo_check_socket_listen)(struct ucred *cred,
359 struct socket *so, struct label *socketlabel);
360 int (*mpo_check_socket_receive)(struct ucred *cred,
361 struct socket *so, struct label *socketlabel);
362 int (*mpo_check_socket_relabel)(struct ucred *cred,
363 struct socket *so, struct label *socketlabel,
364 struct label *newlabel);
365 int (*mpo_check_socket_send)(struct ucred *cred,
366 struct socket *so, struct label *socketlabel);
367 int (*mpo_check_socket_visible)(struct ucred *cred,
368 struct socket *so, struct label *socketlabel);
369 int (*mpo_check_sysarch_ioperm)(struct ucred *cred);
370 int (*mpo_check_system_acct)(struct ucred *cred,
371 struct vnode *vp, struct label *vlabel);
372 int (*mpo_check_system_nfsd)(struct ucred *cred);
373 int (*mpo_check_system_reboot)(struct ucred *cred, int howto);
374 int (*mpo_check_system_settime)(struct ucred *cred);
375 int (*mpo_check_system_swapon)(struct ucred *cred,
376 struct vnode *vp, struct label *label);
377 int (*mpo_check_system_swapoff)(struct ucred *cred,
378 struct vnode *vp, struct label *label);
379 int (*mpo_check_system_sysctl)(struct ucred *cred,
380 struct sysctl_oid *oidp, void *arg1, int arg2,
381 struct sysctl_req *req);
382 int (*mpo_check_vnode_access)(struct ucred *cred,
383 struct vnode *vp, struct label *label, int acc_mode);
384 int (*mpo_check_vnode_chdir)(struct ucred *cred,
385 struct vnode *dvp, struct label *dlabel);
386 int (*mpo_check_vnode_chroot)(struct ucred *cred,
387 struct vnode *dvp, struct label *dlabel);
388 int (*mpo_check_vnode_create)(struct ucred *cred,
389 struct vnode *dvp, struct label *dlabel,
390 struct componentname *cnp, struct vattr *vap);
391 int (*mpo_check_vnode_delete)(struct ucred *cred,
392 struct vnode *dvp, struct label *dlabel,
393 struct vnode *vp, struct label *label,
394 struct componentname *cnp);
395 int (*mpo_check_vnode_deleteacl)(struct ucred *cred,
396 struct vnode *vp, struct label *label, acl_type_t type);
397 int (*mpo_check_vnode_deleteextattr)(struct ucred *cred,
398 struct vnode *vp, struct label *label, int attrnamespace,
399 const char *name);
400 int (*mpo_check_vnode_exec)(struct ucred *cred, struct vnode *vp,
401 struct label *label, struct image_params *imgp,
402 struct label *execlabel);
403 int (*mpo_check_vnode_getacl)(struct ucred *cred,
404 struct vnode *vp, struct label *label, acl_type_t type);
405 int (*mpo_check_vnode_getextattr)(struct ucred *cred,
406 struct vnode *vp, struct label *label, int attrnamespace,
407 const char *name, struct uio *uio);
408 int (*mpo_check_vnode_link)(struct ucred *cred, struct vnode *dvp,
409 struct label *dlabel, struct vnode *vp,
410 struct label *label, struct componentname *cnp);
411 int (*mpo_check_vnode_listextattr)(struct ucred *cred,
412 struct vnode *vp, struct label *label, int attrnamespace);
413 int (*mpo_check_vnode_lookup)(struct ucred *cred,
414 struct vnode *dvp, struct label *dlabel,
415 struct componentname *cnp);
416 int (*mpo_check_vnode_mmap)(struct ucred *cred, struct vnode *vp,
417 struct label *label, int prot, int flags);
418 void (*mpo_check_vnode_mmap_downgrade)(struct ucred *cred,
419 struct vnode *vp, struct label *label, int *prot);
420 int (*mpo_check_vnode_mprotect)(struct ucred *cred,
421 struct vnode *vp, struct label *label, int prot);
422 int (*mpo_check_vnode_open)(struct ucred *cred, struct vnode *vp,
423 struct label *label, int acc_mode);
424 int (*mpo_check_vnode_poll)(struct ucred *active_cred,
425 struct ucred *file_cred, struct vnode *vp,
426 struct label *label);
427 int (*mpo_check_vnode_read)(struct ucred *active_cred,
428 struct ucred *file_cred, struct vnode *vp,
429 struct label *label);
430 int (*mpo_check_vnode_readdir)(struct ucred *cred,
431 struct vnode *dvp, struct label *dlabel);
432 int (*mpo_check_vnode_readlink)(struct ucred *cred,
433 struct vnode *vp, struct label *label);
434 int (*mpo_check_vnode_relabel)(struct ucred *cred,
435 struct vnode *vp, struct label *vnodelabel,
436 struct label *newlabel);
437 int (*mpo_check_vnode_rename_from)(struct ucred *cred,
438 struct vnode *dvp, struct label *dlabel, struct vnode *vp,
439 struct label *label, struct componentname *cnp);
440 int (*mpo_check_vnode_rename_to)(struct ucred *cred,
441 struct vnode *dvp, struct label *dlabel, struct vnode *vp,
442 struct label *label, int samedir,
443 struct componentname *cnp);
444 int (*mpo_check_vnode_revoke)(struct ucred *cred,
445 struct vnode *vp, struct label *label);
446 int (*mpo_check_vnode_setacl)(struct ucred *cred,
447 struct vnode *vp, struct label *label, acl_type_t type,
448 struct acl *acl);
449 int (*mpo_check_vnode_setextattr)(struct ucred *cred,
450 struct vnode *vp, struct label *label, int attrnamespace,
451 const char *name, struct uio *uio);
452 int (*mpo_check_vnode_setflags)(struct ucred *cred,
453 struct vnode *vp, struct label *label, u_long flags);
454 int (*mpo_check_vnode_setmode)(struct ucred *cred,
455 struct vnode *vp, struct label *label, mode_t mode);
456 int (*mpo_check_vnode_setowner)(struct ucred *cred,
457 struct vnode *vp, struct label *label, uid_t uid,
458 gid_t gid);
459 int (*mpo_check_vnode_setutimes)(struct ucred *cred,
460 struct vnode *vp, struct label *label,
461 struct timespec atime, struct timespec mtime);
462 int (*mpo_check_vnode_stat)(struct ucred *active_cred,
463 struct ucred *file_cred, struct vnode *vp,
464 struct label *label);
465 int (*mpo_check_vnode_write)(struct ucred *active_cred,
466 struct ucred *file_cred, struct vnode *vp,
467 struct label *label);
468 };
469
470 /*
471 * struct mac_policy_conf is the registration structure for policies, and is
472 * provided to the MAC Framework using MAC_POLICY_SET() to invoke a SYSINIT
473 * to register the policy. In general, the fields are immutable, with the
474 * exception of the "security field", run-time flags, and policy list entry,
475 * which are managed by the MAC Framework. Be careful when modifying this
476 * structure, as its layout is statically compiled into all policies.
477 */
478 struct mac_policy_conf {
479 char *mpc_name; /* policy name */
480 char *mpc_fullname; /* policy full name */
481 struct mac_policy_ops *mpc_ops; /* policy operations */
482 int mpc_loadtime_flags; /* flags */
483 int *mpc_field_off; /* security field */
484 int mpc_runtime_flags; /* flags */
485 LIST_ENTRY(mac_policy_conf) mpc_list; /* global list */
486 };
487
488 /* Flags for the mpc_loadtime_flags field. */
489 #define MPC_LOADTIME_FLAG_NOTLATE 0x00000001
490 #define MPC_LOADTIME_FLAG_UNLOADOK 0x00000002
491 #define MPC_LOADTIME_FLAG_LABELMBUFS 0x00000004
492
493 /* Flags for the mpc_runtime_flags field. */
494 #define MPC_RUNTIME_FLAG_REGISTERED 0x00000001
495
496 #define MAC_POLICY_SET(mpops, mpname, mpfullname, mpflags, privdata_wanted) \
497 static struct mac_policy_conf mpname##_mac_policy_conf = { \
498 #mpname, \
499 mpfullname, \
500 mpops, \
501 mpflags, \
502 privdata_wanted, \
503 0, \
504 }; \
505 static moduledata_t mpname##_mod = { \
506 #mpname, \
507 mac_policy_modevent, \
508 &mpname##_mac_policy_conf \
509 }; \
510 MODULE_DEPEND(mpname, kernel_mac_support, 1, 1, 1); \
511 DECLARE_MODULE(mpname, mpname##_mod, SI_SUB_MAC_POLICY, \
512 SI_ORDER_MIDDLE)
513
514 int mac_policy_modevent(module_t mod, int type, void *data);
515
516 #define LABEL_TO_SLOT(l, s) (l)->l_perpolicy[s]
517
518 #endif /* !_SYS_MAC_POLICY_H_ */
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