Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/sys/mac_policy.h
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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: releng/5.4/sys/sys/mac_policy.h 145335 2005-04-20 19:11:07Z cvs2svn $ 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); 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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