mac_policy.h revision 111939
1/*- 2 * Copyright (c) 1999, 2000, 2001, 2002 Robert N. M. Watson 3 * Copyright (c) 2001, 2002 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: head/sys/security/mac/mac_policy.h 111939 2003-03-06 04:47:47Z 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 */ 54struct mac_policy_conf; 55struct 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 void (*mpo_init_ipq_label)(struct label *label); 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_pipe_label)(struct label *src, 99 struct label *dest); 100 void (*mpo_copy_vnode_label)(struct label *src, 101 struct label *dest); 102 int (*mpo_externalize_cred_label)(struct label *label, 103 char *element_name, char *buffer, size_t buflen, 104 size_t *len, int *claimed); 105 int (*mpo_externalize_ifnet_label)(struct label *label, 106 char *element_name, char *buffer, size_t buflen, 107 size_t *len, int *claimed); 108 int (*mpo_externalize_pipe_label)(struct label *label, 109 char *element_name, char *buffer, size_t buflen, 110 size_t *len, int *claimed); 111 int (*mpo_externalize_socket_label)(struct label *label, 112 char *element_name, char *buffer, size_t buflen, 113 size_t *len, int *claimed); 114 int (*mpo_externalize_socket_peer_label)(struct label *label, 115 char *element_name, char *buffer, size_t buflen, 116 size_t *len, int *claimed); 117 int (*mpo_externalize_vnode_label)(struct label *label, 118 char *element_name, char *buffer, size_t buflen, 119 size_t *len, int *claimed); 120 int (*mpo_internalize_cred_label)(struct label *label, 121 char *element_name, char *element_data, int *claimed); 122 int (*mpo_internalize_ifnet_label)(struct label *label, 123 char *element_name, char *element_data, int *claimed); 124 int (*mpo_internalize_pipe_label)(struct label *label, 125 char *element_name, char *element_data, int *claimed); 126 int (*mpo_internalize_socket_label)(struct label *label, 127 char *element_name, char *element_data, int *claimed); 128 int (*mpo_internalize_vnode_label)(struct label *label, 129 char *element_name, char *element_data, int *claimed); 130 131 /* 132 * Labeling event operations: file system objects, and things that 133 * look a lot like file system objects. 134 */ 135 void (*mpo_associate_vnode_devfs)(struct mount *mp, 136 struct label *fslabel, struct devfs_dirent *de, 137 struct label *delabel, struct vnode *vp, 138 struct label *vlabel); 139 int (*mpo_associate_vnode_extattr)(struct mount *mp, 140 struct label *fslabel, struct vnode *vp, 141 struct label *vlabel); 142 void (*mpo_associate_vnode_singlelabel)(struct mount *mp, 143 struct label *fslabel, struct vnode *vp, 144 struct label *vlabel); 145 void (*mpo_create_devfs_device)(struct mount *mp, dev_t dev, 146 struct devfs_dirent *de, struct label *label); 147 void (*mpo_create_devfs_directory)(struct mount *mp, char *dirname, 148 int dirnamelen, struct devfs_dirent *de, 149 struct label *label); 150 void (*mpo_create_devfs_symlink)(struct ucred *cred, 151 struct mount *mp, struct devfs_dirent *dd, 152 struct label *ddlabel, struct devfs_dirent *de, 153 struct label *delabel); 154 int (*mpo_create_vnode_extattr)(struct ucred *cred, 155 struct mount *mp, struct label *fslabel, 156 struct vnode *dvp, struct label *dlabel, 157 struct vnode *vp, struct label *vlabel, 158 struct componentname *cnp); 159 void (*mpo_create_mount)(struct ucred *cred, struct mount *mp, 160 struct label *mntlabel, struct label *fslabel); 161 void (*mpo_create_root_mount)(struct ucred *cred, struct mount *mp, 162 struct label *mountlabel, struct label *fslabel); 163 void (*mpo_relabel_vnode)(struct ucred *cred, struct vnode *vp, 164 struct label *vnodelabel, struct label *label); 165 int (*mpo_setlabel_vnode_extattr)(struct ucred *cred, 166 struct vnode *vp, struct label *vlabel, 167 struct label *intlabel); 168 void (*mpo_update_devfsdirent)(struct mount *mp, 169 struct devfs_dirent *devfs_dirent, 170 struct label *direntlabel, struct vnode *vp, 171 struct label *vnodelabel); 172 173 /* 174 * Labeling event operations: IPC objects. 175 */ 176 void (*mpo_create_mbuf_from_socket)(struct socket *so, 177 struct label *socketlabel, struct mbuf *m, 178 struct label *mbuflabel); 179 void (*mpo_create_socket)(struct ucred *cred, struct socket *so, 180 struct label *socketlabel); 181 void (*mpo_create_socket_from_socket)(struct socket *oldsocket, 182 struct label *oldsocketlabel, struct socket *newsocket, 183 struct label *newsocketlabel); 184 void (*mpo_relabel_socket)(struct ucred *cred, struct socket *so, 185 struct label *oldlabel, struct label *newlabel); 186 void (*mpo_relabel_pipe)(struct ucred *cred, struct pipe *pipe, 187 struct label *oldlabel, struct label *newlabel); 188 void (*mpo_set_socket_peer_from_mbuf)(struct mbuf *mbuf, 189 struct label *mbuflabel, struct socket *so, 190 struct label *socketpeerlabel); 191 void (*mpo_set_socket_peer_from_socket)(struct socket *oldsocket, 192 struct label *oldsocketlabel, struct socket *newsocket, 193 struct label *newsocketpeerlabel); 194 void (*mpo_create_pipe)(struct ucred *cred, struct pipe *pipe, 195 struct label *pipelabel); 196 197 /* 198 * Labeling event operations: network objects. 199 */ 200 void (*mpo_create_bpfdesc)(struct ucred *cred, struct bpf_d *bpf_d, 201 struct label *bpflabel); 202 void (*mpo_create_ifnet)(struct ifnet *ifnet, 203 struct label *ifnetlabel); 204 void (*mpo_create_ipq)(struct mbuf *fragment, 205 struct label *fragmentlabel, struct ipq *ipq, 206 struct label *ipqlabel); 207 void (*mpo_create_datagram_from_ipq) 208 (struct ipq *ipq, struct label *ipqlabel, 209 struct mbuf *datagram, struct label *datagramlabel); 210 void (*mpo_create_fragment)(struct mbuf *datagram, 211 struct label *datagramlabel, struct mbuf *fragment, 212 struct label *fragmentlabel); 213 void (*mpo_create_mbuf_from_mbuf)(struct mbuf *oldmbuf, 214 struct label *oldlabel, struct mbuf *newmbuf, 215 struct label *newlabel); 216 void (*mpo_create_mbuf_linklayer)(struct ifnet *ifnet, 217 struct label *ifnetlabel, struct mbuf *mbuf, 218 struct label *mbuflabel); 219 void (*mpo_create_mbuf_from_bpfdesc)(struct bpf_d *bpf_d, 220 struct label *bpflabel, struct mbuf *mbuf, 221 struct label *mbuflabel); 222 void (*mpo_create_mbuf_from_ifnet)(struct ifnet *ifnet, 223 struct label *ifnetlabel, struct mbuf *mbuf, 224 struct label *mbuflabel); 225 void (*mpo_create_mbuf_multicast_encap)(struct mbuf *oldmbuf, 226 struct label *oldmbuflabel, struct ifnet *ifnet, 227 struct label *ifnetlabel, struct mbuf *newmbuf, 228 struct label *newmbuflabel); 229 void (*mpo_create_mbuf_netlayer)(struct mbuf *oldmbuf, 230 struct label *oldmbuflabel, struct mbuf *newmbuf, 231 struct label *newmbuflabel); 232 int (*mpo_fragment_match)(struct mbuf *fragment, 233 struct label *fragmentlabel, struct ipq *ipq, 234 struct label *ipqlabel); 235 void (*mpo_relabel_ifnet)(struct ucred *cred, struct ifnet *ifnet, 236 struct label *ifnetlabel, struct label *newlabel); 237 void (*mpo_update_ipq)(struct mbuf *fragment, 238 struct label *fragmentlabel, struct ipq *ipq, 239 struct label *ipqlabel); 240 241 /* 242 * Labeling event operations: processes. 243 */ 244 void (*mpo_create_cred)(struct ucred *parent_cred, 245 struct ucred *child_cred); 246 void (*mpo_execve_transition)(struct ucred *old, struct ucred *new, 247 struct vnode *vp, struct label *vnodelabel, 248 struct label *interpvnodelabel, 249 struct image_params *imgp, struct label *execlabel); 250 int (*mpo_execve_will_transition)(struct ucred *old, 251 struct vnode *vp, struct label *vnodelabel, 252 struct label *interpvnodelabel, 253 struct image_params *imgp, struct label *execlabel); 254 void (*mpo_create_proc0)(struct ucred *cred); 255 void (*mpo_create_proc1)(struct ucred *cred); 256 void (*mpo_relabel_cred)(struct ucred *cred, 257 struct label *newlabel); 258 void (*mpo_thread_userret)(struct thread *thread); 259 260 /* 261 * Access control checks. 262 */ 263 int (*mpo_check_bpfdesc_receive)(struct bpf_d *bpf_d, 264 struct label *bpflabel, struct ifnet *ifnet, 265 struct label *ifnetlabel); 266 int (*mpo_check_cred_relabel)(struct ucred *cred, 267 struct label *newlabel); 268 int (*mpo_check_cred_visible)(struct ucred *u1, struct ucred *u2); 269 int (*mpo_check_ifnet_relabel)(struct ucred *cred, 270 struct ifnet *ifnet, struct label *ifnetlabel, 271 struct label *newlabel); 272 int (*mpo_check_ifnet_transmit)(struct ifnet *ifnet, 273 struct label *ifnetlabel, struct mbuf *m, 274 struct label *mbuflabel); 275 int (*mpo_check_kenv_dump)(struct ucred *cred); 276 int (*mpo_check_kenv_get)(struct ucred *cred, char *name); 277 int (*mpo_check_kenv_set)(struct ucred *cred, char *name, 278 char *value); 279 int (*mpo_check_kenv_unset)(struct ucred *cred, char *name); 280 int (*mpo_check_kld_load)(struct ucred *cred, struct vnode *vp, 281 struct label *vlabel); 282 int (*mpo_check_kld_stat)(struct ucred *cred); 283 int (*mpo_check_kld_unload)(struct ucred *cred); 284 int (*mpo_check_mount_stat)(struct ucred *cred, struct mount *mp, 285 struct label *mntlabel); 286 int (*mpo_check_pipe_ioctl)(struct ucred *cred, struct pipe *pipe, 287 struct label *pipelabel, unsigned long cmd, void *data); 288 int (*mpo_check_pipe_poll)(struct ucred *cred, struct pipe *pipe, 289 struct label *pipelabel); 290 int (*mpo_check_pipe_read)(struct ucred *cred, struct pipe *pipe, 291 struct label *pipelabel); 292 int (*mpo_check_pipe_relabel)(struct ucred *cred, 293 struct pipe *pipe, struct label *pipelabel, 294 struct label *newlabel); 295 int (*mpo_check_pipe_stat)(struct ucred *cred, struct pipe *pipe, 296 struct label *pipelabel); 297 int (*mpo_check_pipe_write)(struct ucred *cred, struct pipe *pipe, 298 struct label *pipelabel); 299 int (*mpo_check_proc_debug)(struct ucred *cred, 300 struct proc *proc); 301 int (*mpo_check_proc_sched)(struct ucred *cred, 302 struct proc *proc); 303 int (*mpo_check_proc_signal)(struct ucred *cred, 304 struct proc *proc, int signum); 305 int (*mpo_check_socket_bind)(struct ucred *cred, 306 struct socket *so, struct label *socketlabel, 307 struct sockaddr *sockaddr); 308 int (*mpo_check_socket_connect)(struct ucred *cred, 309 struct socket *so, struct label *socketlabel, 310 struct sockaddr *sockaddr); 311 int (*mpo_check_socket_deliver)(struct socket *so, 312 struct label *socketlabel, struct mbuf *m, 313 struct label *mbuflabel); 314 int (*mpo_check_socket_listen)(struct ucred *cred, 315 struct socket *so, struct label *socketlabel); 316 int (*mpo_check_socket_receive)(struct ucred *cred, 317 struct socket *so, struct label *socketlabel); 318 int (*mpo_check_socket_relabel)(struct ucred *cred, 319 struct socket *so, struct label *socketlabel, 320 struct label *newlabel); 321 int (*mpo_check_socket_send)(struct ucred *cred, 322 struct socket *so, struct label *socketlabel); 323 int (*mpo_check_socket_visible)(struct ucred *cred, 324 struct socket *so, struct label *socketlabel); 325 int (*mpo_check_sysarch_ioperm)(struct ucred *cred); 326 int (*mpo_check_system_acct)(struct ucred *cred, 327 struct vnode *vp, struct label *vlabel); 328 int (*mpo_check_system_nfsd)(struct ucred *cred); 329 int (*mpo_check_system_reboot)(struct ucred *cred, int howto); 330 int (*mpo_check_system_settime)(struct ucred *cred); 331 int (*mpo_check_system_swapon)(struct ucred *cred, 332 struct vnode *vp, struct label *label); 333 int (*mpo_check_system_swapoff)(struct ucred *cred, 334 struct vnode *vp, struct label *label); 335 int (*mpo_check_system_sysctl)(struct ucred *cred, int *name, 336 u_int namelen, void *old, size_t *oldlenp, int inkernel, 337 void *new, size_t newlen); 338 int (*mpo_check_vnode_access)(struct ucred *cred, 339 struct vnode *vp, struct label *label, int acc_mode); 340 int (*mpo_check_vnode_chdir)(struct ucred *cred, 341 struct vnode *dvp, struct label *dlabel); 342 int (*mpo_check_vnode_chroot)(struct ucred *cred, 343 struct vnode *dvp, struct label *dlabel); 344 int (*mpo_check_vnode_create)(struct ucred *cred, 345 struct vnode *dvp, struct label *dlabel, 346 struct componentname *cnp, struct vattr *vap); 347 int (*mpo_check_vnode_delete)(struct ucred *cred, 348 struct vnode *dvp, struct label *dlabel, 349 struct vnode *vp, struct label *label, 350 struct componentname *cnp); 351 int (*mpo_check_vnode_deleteacl)(struct ucred *cred, 352 struct vnode *vp, struct label *label, acl_type_t type); 353 int (*mpo_check_vnode_exec)(struct ucred *cred, struct vnode *vp, 354 struct label *label, struct image_params *imgp, 355 struct label *execlabel); 356 int (*mpo_check_vnode_getacl)(struct ucred *cred, 357 struct vnode *vp, struct label *label, acl_type_t type); 358 int (*mpo_check_vnode_getextattr)(struct ucred *cred, 359 struct vnode *vp, struct label *label, int attrnamespace, 360 const char *name, struct uio *uio); 361 int (*mpo_check_vnode_link)(struct ucred *cred, struct vnode *dvp, 362 struct label *dlabel, struct vnode *vp, 363 struct label *label, struct componentname *cnp); 364 int (*mpo_check_vnode_lookup)(struct ucred *cred, 365 struct vnode *dvp, struct label *dlabel, 366 struct componentname *cnp); 367 int (*mpo_check_vnode_mmap)(struct ucred *cred, struct vnode *vp, 368 struct label *label, int prot); 369 void (*mpo_check_vnode_mmap_downgrade)(struct ucred *cred, 370 struct vnode *vp, struct label *label, int *prot); 371 int (*mpo_check_vnode_mprotect)(struct ucred *cred, 372 struct vnode *vp, struct label *label, int prot); 373 int (*mpo_check_vnode_open)(struct ucred *cred, struct vnode *vp, 374 struct label *label, int acc_mode); 375 int (*mpo_check_vnode_poll)(struct ucred *active_cred, 376 struct ucred *file_cred, struct vnode *vp, 377 struct label *label); 378 int (*mpo_check_vnode_read)(struct ucred *active_cred, 379 struct ucred *file_cred, struct vnode *vp, 380 struct label *label); 381 int (*mpo_check_vnode_readdir)(struct ucred *cred, 382 struct vnode *dvp, struct label *dlabel); 383 int (*mpo_check_vnode_readlink)(struct ucred *cred, 384 struct vnode *vp, struct label *label); 385 int (*mpo_check_vnode_relabel)(struct ucred *cred, 386 struct vnode *vp, struct label *vnodelabel, 387 struct label *newlabel); 388 int (*mpo_check_vnode_rename_from)(struct ucred *cred, 389 struct vnode *dvp, struct label *dlabel, struct vnode *vp, 390 struct label *label, struct componentname *cnp); 391 int (*mpo_check_vnode_rename_to)(struct ucred *cred, 392 struct vnode *dvp, struct label *dlabel, struct vnode *vp, 393 struct label *label, int samedir, 394 struct componentname *cnp); 395 int (*mpo_check_vnode_revoke)(struct ucred *cred, 396 struct vnode *vp, struct label *label); 397 int (*mpo_check_vnode_setacl)(struct ucred *cred, 398 struct vnode *vp, struct label *label, acl_type_t type, 399 struct acl *acl); 400 int (*mpo_check_vnode_setextattr)(struct ucred *cred, 401 struct vnode *vp, struct label *label, int attrnamespace, 402 const char *name, struct uio *uio); 403 int (*mpo_check_vnode_setflags)(struct ucred *cred, 404 struct vnode *vp, struct label *label, u_long flags); 405 int (*mpo_check_vnode_setmode)(struct ucred *cred, 406 struct vnode *vp, struct label *label, mode_t mode); 407 int (*mpo_check_vnode_setowner)(struct ucred *cred, 408 struct vnode *vp, struct label *label, uid_t uid, 409 gid_t gid); 410 int (*mpo_check_vnode_setutimes)(struct ucred *cred, 411 struct vnode *vp, struct label *label, 412 struct timespec atime, struct timespec mtime); 413 int (*mpo_check_vnode_stat)(struct ucred *active_cred, 414 struct ucred *file_cred, struct vnode *vp, 415 struct label *label); 416 int (*mpo_check_vnode_write)(struct ucred *active_cred, 417 struct ucred *file_cred, struct vnode *vp, 418 struct label *label); 419}; 420 421struct mac_policy_conf { 422 char *mpc_name; /* policy name */ 423 char *mpc_fullname; /* policy full name */ 424 struct mac_policy_ops *mpc_ops; /* policy operations */ 425 int mpc_loadtime_flags; /* flags */ 426 int *mpc_field_off; /* security field */ 427 int mpc_runtime_flags; /* flags */ 428 LIST_ENTRY(mac_policy_conf) mpc_list; /* global list */ 429}; 430 431/* Flags for the mpc_loadtime_flags field. */ 432#define MPC_LOADTIME_FLAG_NOTLATE 0x00000001 433#define MPC_LOADTIME_FLAG_UNLOADOK 0x00000002 434 435/* Flags for the mpc_runtime_flags field. */ 436#define MPC_RUNTIME_FLAG_REGISTERED 0x00000001 437 438#define MAC_POLICY_SET(mpops, mpname, mpfullname, mpflags, privdata_wanted) \ 439 static struct mac_policy_conf mpname##_mac_policy_conf = { \ 440 #mpname, \ 441 mpfullname, \ 442 mpops, \ 443 mpflags, \ 444 privdata_wanted, \ 445 0, \ 446 }; \ 447 static moduledata_t mpname##_mod = { \ 448 #mpname, \ 449 mac_policy_modevent, \ 450 &mpname##_mac_policy_conf \ 451 }; \ 452 MODULE_DEPEND(mpname, kernel_mac_support, 1, 1, 1); \ 453 DECLARE_MODULE(mpname, mpname##_mod, SI_SUB_MAC_POLICY, \ 454 SI_ORDER_MIDDLE) 455 456int mac_policy_modevent(module_t mod, int type, void *data); 457 458#define LABEL_TO_SLOT(l, s) (l)->l_perpolicy[s] 459 460#endif /* !_SYS_MAC_POLICY_H */ 461