1 /*- 2 * Copyright (c) 1999-2002 Robert N. M. Watson 3 * Copyright (c) 2001-2005 Networks Associates Technology, Inc. 4 * Copyright (c) 2005-2006 SPARTA, Inc. 5 * All rights reserved. 6 * 7 * This software was developed by Robert Watson for the TrustedBSD Project. 8 * 9 * This software was developed for the FreeBSD Project in part by Network 10 * Associates Laboratories, the Security Research Division of Network 11 * Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), 12 * as part of the DARPA CHATS research program. 13 * 14 * This software was enhanced by SPARTA ISSO under SPAWAR contract 15 * N66001-04-C-6019 ("SEFOS"). 16 * 17 * Redistribution and use in source and binary forms, with or without 18 * modification, are permitted provided that the following conditions 19 * are met: 20 * 1. Redistributions of source code must retain the above copyright 21 * notice, this list of conditions and the following disclaimer. 22 * 2. Redistributions in binary form must reproduce the above copyright 23 * notice, this list of conditions and the following disclaimer in the 24 * documentation and/or other materials provided with the distribution. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 * 38 * $FreeBSD$ 39 */ 40 41 /* 42 * Kernel interface for Mandatory Access Control -- how kernel services 43 * interact with the TrustedBSD MAC Framework. 44 */ 45 46 #ifndef _SYS_SECURITY_MAC_MAC_FRAMEWORK_H_ 47 #define _SYS_SECURITY_MAC_MAC_FRAMEWORK_H_ 48 49 #ifndef _KERNEL 50 #error "no user-serviceable parts inside" 51 #endif 52 53 struct bpf_d; 54 struct cdev; 55 struct componentname; 56 struct devfs_dirent; 57 struct ifnet; 58 struct ifreq; 59 struct image_params; 60 struct inpcb; 61 struct ipq; 62 struct ksem; 63 struct label; 64 struct m_tag; 65 struct mac; 66 struct mbuf; 67 struct mount; 68 struct msg; 69 struct msqid_kernel; 70 struct proc; 71 struct semid_kernel; 72 struct shmid_kernel; 73 struct sockaddr; 74 struct socket; 75 struct sysctl_oid; 76 struct sysctl_req; 77 struct pipepair; 78 struct thread; 79 struct timespec; 80 struct ucred; 81 struct uio; 82 struct vattr; 83 struct vnode; 84 struct vop_setlabel_args; 85 86 #include <sys/acl.h> /* XXX acl_type_t */ 87 88 /* 89 * Kernel functions to manage and evaluate labels. 90 */ 91 void mac_init_bpfdesc(struct bpf_d *); 92 void mac_init_cred(struct ucred *); 93 void mac_init_devfsdirent(struct devfs_dirent *); 94 void mac_init_ifnet(struct ifnet *); 95 int mac_init_inpcb(struct inpcb *, int flag); 96 void mac_init_sysv_msgmsg(struct msg *); 97 void mac_init_sysv_msgqueue(struct msqid_kernel*); 98 void mac_init_sysv_sem(struct semid_kernel*); 99 void mac_init_sysv_shm(struct shmid_kernel*); 100 int mac_init_ipq(struct ipq *, int flag); 101 int mac_init_socket(struct socket *, int flag); 102 void mac_init_pipe(struct pipepair *); 103 void mac_init_posix_sem(struct ksem *); 104 int mac_init_mbuf(struct mbuf *mbuf, int flag); 105 int mac_init_mbuf_tag(struct m_tag *, int flag); 106 void mac_init_mount(struct mount *); 107 void mac_init_proc(struct proc *); 108 void mac_init_vnode(struct vnode *); 109 void mac_copy_mbuf(struct mbuf *m_from, struct mbuf *m_to); 110 void mac_copy_mbuf_tag(struct m_tag *, struct m_tag *); 111 void mac_copy_vnode_label(struct label *, struct label *label); 112 void mac_destroy_bpfdesc(struct bpf_d *); 113 void mac_destroy_cred(struct ucred *); 114 void mac_destroy_devfsdirent(struct devfs_dirent *); 115 void mac_destroy_ifnet(struct ifnet *); 116 void mac_destroy_inpcb(struct inpcb *); 117 void mac_destroy_sysv_msgmsg(struct msg *); 118 void mac_destroy_sysv_msgqueue(struct msqid_kernel *); 119 void mac_destroy_sysv_sem(struct semid_kernel *); 120 void mac_destroy_sysv_shm(struct shmid_kernel *); 121 void mac_destroy_ipq(struct ipq *); 122 void mac_destroy_socket(struct socket *); 123 void mac_destroy_pipe(struct pipepair *); 124 void mac_destroy_posix_sem(struct ksem *); 125 void mac_destroy_proc(struct proc *); 126 void mac_destroy_mbuf_tag(struct m_tag *); 127 void mac_destroy_mount(struct mount *); 128 void mac_destroy_vnode(struct vnode *); 129 130 struct label *mac_cred_label_alloc(void); 131 void mac_cred_label_free(struct label *label); 132 struct label *mac_vnode_label_alloc(void); 133 void mac_vnode_label_free(struct label *label); 134 135 /* 136 * Labeling event operations: file system objects, and things that look a lot 137 * like file system objects. 138 */ 139 void mac_associate_vnode_devfs(struct mount *mp, struct devfs_dirent *de, 140 struct vnode *vp); 141 int mac_associate_vnode_extattr(struct mount *mp, struct vnode *vp); 142 void mac_associate_vnode_singlelabel(struct mount *mp, struct vnode *vp); 143 void mac_create_devfs_device(struct ucred *cred, struct mount *mp, 144 struct cdev *dev, struct devfs_dirent *de); 145 void mac_create_devfs_directory(struct mount *mp, char *dirname, 146 int dirnamelen, struct devfs_dirent *de); 147 void mac_create_devfs_symlink(struct ucred *cred, struct mount *mp, 148 struct devfs_dirent *dd, struct devfs_dirent *de); 149 int mac_create_vnode_extattr(struct ucred *cred, struct mount *mp, 150 struct vnode *dvp, struct vnode *vp, struct componentname *cnp); 151 void mac_create_mount(struct ucred *cred, struct mount *mp); 152 void mac_relabel_vnode(struct ucred *cred, struct vnode *vp, 153 struct label *newlabel); 154 void mac_update_devfsdirent(struct mount *mp, struct devfs_dirent *de, 155 struct vnode *vp); 156 157 /* 158 * Labeling event operations: IPC objects. 159 */ 160 void mac_create_mbuf_from_socket(struct socket *so, struct mbuf *m); 161 void mac_create_socket(struct ucred *cred, struct socket *socket); 162 void mac_create_socket_from_socket(struct socket *oldsocket, 163 struct socket *newsocket); 164 void mac_set_socket_peer_from_mbuf(struct mbuf *mbuf, 165 struct socket *socket); 166 void mac_set_socket_peer_from_socket(struct socket *oldsocket, 167 struct socket *newsocket); 168 void mac_create_pipe(struct ucred *cred, struct pipepair *pp); 169 170 /* 171 * Labeling event operations: System V IPC primitives 172 */ 173 void mac_create_sysv_msgmsg(struct ucred *cred, 174 struct msqid_kernel *msqkptr, struct msg *msgptr); 175 void mac_create_sysv_msgqueue(struct ucred *cred, 176 struct msqid_kernel *msqkptr); 177 void mac_create_sysv_sem(struct ucred *cred, 178 struct semid_kernel *semakptr); 179 void mac_create_sysv_shm(struct ucred *cred, 180 struct shmid_kernel *shmsegptr); 181 182 /* 183 * Labeling event operations: POSIX (global/inter-process) semaphores. 184 */ 185 void mac_create_posix_sem(struct ucred *cred, struct ksem *ksemptr); 186 187 /* 188 * Labeling event operations: network objects. 189 */ 190 void mac_create_bpfdesc(struct ucred *cred, struct bpf_d *bpf_d); 191 void mac_create_ifnet(struct ifnet *ifp); 192 void mac_create_inpcb_from_socket(struct socket *so, struct inpcb *inp); 193 void mac_create_ipq(struct mbuf *fragment, struct ipq *ipq); 194 void mac_create_datagram_from_ipq(struct ipq *ipq, struct mbuf *datagram); 195 void mac_create_fragment(struct mbuf *datagram, struct mbuf *fragment); 196 void mac_create_mbuf_from_inpcb(struct inpcb *inp, struct mbuf *m); 197 void mac_create_mbuf_linklayer(struct ifnet *ifnet, struct mbuf *m); 198 void mac_create_mbuf_from_bpfdesc(struct bpf_d *bpf_d, struct mbuf *m); 199 void mac_create_mbuf_from_ifnet(struct ifnet *ifnet, struct mbuf *m); 200 void mac_create_mbuf_multicast_encap(struct mbuf *oldmbuf, 201 struct ifnet *ifnet, struct mbuf *newmbuf); 202 void mac_create_mbuf_netlayer(struct mbuf *oldmbuf, struct mbuf *newmbuf); 203 int mac_fragment_match(struct mbuf *fragment, struct ipq *ipq); 204 void mac_reflect_mbuf_icmp(struct mbuf *m); 205 void mac_reflect_mbuf_tcp(struct mbuf *m); 206 void mac_update_ipq(struct mbuf *fragment, struct ipq *ipq); 207 void mac_inpcb_sosetlabel(struct socket *so, struct inpcb *inp); 208 void mac_create_mbuf_from_firewall(struct mbuf *m); 209 void mac_destroy_syncache(struct label **label); 210 int mac_init_syncache(struct label **label); 211 void mac_init_syncache_from_inpcb(struct label *label, struct inpcb *inp); 212 void mac_create_mbuf_from_syncache(struct label *sc_label, struct mbuf *m); 213 214 /* 215 * Labeling event operations: processes. 216 */ 217 void mac_copy_cred(struct ucred *cr1, struct ucred *cr2); 218 int mac_execve_enter(struct image_params *imgp, struct mac *mac_p); 219 void mac_execve_exit(struct image_params *imgp); 220 void mac_execve_transition(struct ucred *old, struct ucred *new, 221 struct vnode *vp, struct label *interpvnodelabel, 222 struct image_params *imgp); 223 int mac_execve_will_transition(struct ucred *old, struct vnode *vp, 224 struct label *interpvnodelabel, struct image_params *imgp); 225 void mac_create_proc0(struct ucred *cred); 226 void mac_create_proc1(struct ucred *cred); 227 void mac_thread_userret(struct thread *td); 228 229 /* 230 * Label cleanup operation: This is the inverse complement for the mac_create 231 * and associate type of hooks. This hook lets the policy module(s) perform a 232 * cleanup/flushing operation on the label associated with the objects, 233 * without freeing up the space allocated. This hook is useful in cases 234 * where it is desirable to remove any labeling reference when recycling any 235 * object to a pool. This hook does not replace the mac_destroy hooks. 236 * 237 * XXXRW: These object methods are inconsistent with the life cycles of other 238 * objects, and likely should be revised to be more consistent. 239 */ 240 void mac_cleanup_sysv_msgmsg(struct msg *msgptr); 241 void mac_cleanup_sysv_msgqueue(struct msqid_kernel *msqkptr); 242 void mac_cleanup_sysv_sem(struct semid_kernel *semakptr); 243 void mac_cleanup_sysv_shm(struct shmid_kernel *shmsegptr); 244 245 /* 246 * Access control checks. 247 */ 248 int mac_check_bpfdesc_receive(struct bpf_d *bpf_d, struct ifnet *ifnet); 249 int mac_check_cred_visible(struct ucred *u1, struct ucred *u2); 250 int mac_check_ifnet_transmit(struct ifnet *ifnet, struct mbuf *m); 251 int mac_check_inpcb_deliver(struct inpcb *inp, struct mbuf *m); 252 int mac_check_sysv_msgmsq(struct ucred *cred, struct msg *msgptr, 253 struct msqid_kernel *msqkptr); 254 int mac_check_sysv_msgrcv(struct ucred *cred, struct msg *msgptr); 255 int mac_check_sysv_msgrmid(struct ucred *cred, struct msg *msgptr); 256 int mac_check_sysv_msqget(struct ucred *cred, 257 struct msqid_kernel *msqkptr); 258 int mac_check_sysv_msqsnd(struct ucred *cred, 259 struct msqid_kernel *msqkptr); 260 int mac_check_sysv_msqrcv(struct ucred *cred, 261 struct msqid_kernel *msqkptr); 262 int mac_check_sysv_msqctl(struct ucred *cred, 263 struct msqid_kernel *msqkptr, int cmd); 264 int mac_check_sysv_semctl(struct ucred *cred, 265 struct semid_kernel *semakptr, int cmd); 266 int mac_check_sysv_semget(struct ucred *cred, 267 struct semid_kernel *semakptr); 268 int mac_check_sysv_semop(struct ucred *cred,struct semid_kernel *semakptr, 269 size_t accesstype); 270 int mac_check_sysv_shmat(struct ucred *cred, 271 struct shmid_kernel *shmsegptr, int shmflg); 272 int mac_check_sysv_shmctl(struct ucred *cred, 273 struct shmid_kernel *shmsegptr, int cmd); 274 int mac_check_sysv_shmdt(struct ucred *cred, 275 struct shmid_kernel *shmsegptr); 276 int mac_check_sysv_shmget(struct ucred *cred, 277 struct shmid_kernel *shmsegptr, int shmflg); 278 int mac_check_kenv_dump(struct ucred *cred); 279 int mac_check_kenv_get(struct ucred *cred, char *name); 280 int mac_check_kenv_set(struct ucred *cred, char *name, char *value); 281 int mac_check_kenv_unset(struct ucred *cred, char *name); 282 int mac_check_kld_load(struct ucred *cred, struct vnode *vp); 283 int mac_check_kld_stat(struct ucred *cred); 284 int mac_check_kld_unload(struct ucred *cred); 285 int mac_check_mount_stat(struct ucred *cred, struct mount *mp); 286 int mac_check_pipe_ioctl(struct ucred *cred, struct pipepair *pp, 287 unsigned long cmd, void *data); 288 int mac_check_pipe_poll(struct ucred *cred, struct pipepair *pp); 289 int mac_check_pipe_read(struct ucred *cred, struct pipepair *pp); 290 int mac_check_pipe_stat(struct ucred *cred, struct pipepair *pp); 291 int mac_check_pipe_write(struct ucred *cred, struct pipepair *pp); 292 int mac_check_posix_sem_destroy(struct ucred *cred, struct ksem *ksemptr); 293 int mac_check_posix_sem_getvalue(struct ucred *cred,struct ksem *ksemptr); 294 int mac_check_posix_sem_open(struct ucred *cred, struct ksem *ksemptr); 295 int mac_check_posix_sem_post(struct ucred *cred, struct ksem *ksemptr); 296 int mac_check_posix_sem_unlink(struct ucred *cred, struct ksem *ksemptr); 297 int mac_check_posix_sem_wait(struct ucred *cred, struct ksem *ksemptr); 298 int mac_check_proc_debug(struct ucred *cred, struct proc *proc); 299 int mac_check_proc_sched(struct ucred *cred, struct proc *proc); 300 int mac_check_proc_setuid(struct proc *proc, struct ucred *cred, 301 uid_t uid); 302 int mac_check_proc_seteuid(struct proc *proc, struct ucred *cred, 303 uid_t euid); 304 int mac_check_proc_setgid(struct proc *proc, struct ucred *cred, 305 gid_t gid); 306 int mac_check_proc_setegid(struct proc *proc, struct ucred *cred, 307 gid_t egid); 308 int mac_check_proc_setgroups(struct proc *proc, struct ucred *cred, 309 int ngroups, gid_t *gidset); 310 int mac_check_proc_setreuid(struct proc *proc, struct ucred *cred, 311 uid_t ruid, uid_t euid); 312 int mac_check_proc_setregid(struct proc *proc, struct ucred *cred, 313 gid_t rgid, gid_t egid); 314 int mac_check_proc_setresuid(struct proc *proc, struct ucred *cred, 315 uid_t ruid, uid_t euid, uid_t suid); 316 int mac_check_proc_setresgid(struct proc *proc, struct ucred *cred, 317 gid_t rgid, gid_t egid, gid_t sgid); 318 int mac_check_proc_signal(struct ucred *cred, struct proc *proc, 319 int signum); 320 int mac_check_proc_wait(struct ucred *cred, struct proc *proc); 321 int mac_check_socket_accept(struct ucred *cred, struct socket *so); 322 int mac_check_socket_bind(struct ucred *cred, struct socket *so, 323 struct sockaddr *sockaddr); 324 int mac_check_socket_connect(struct ucred *cred, struct socket *so, 325 struct sockaddr *sockaddr); 326 int mac_check_socket_create(struct ucred *cred, int domain, int type, 327 int protocol); 328 int mac_check_socket_deliver(struct socket *so, struct mbuf *m); 329 int mac_check_socket_listen(struct ucred *cred, struct socket *so); 330 int mac_check_socket_poll(struct ucred *cred, struct socket *so); 331 int mac_check_socket_receive(struct ucred *cred, struct socket *so); 332 int mac_check_socket_send(struct ucred *cred, struct socket *so); 333 int mac_check_socket_stat(struct ucred *cred, struct socket *so); 334 int mac_check_socket_visible(struct ucred *cred, struct socket *so); 335 int mac_check_sysarch_ioperm(struct ucred *cred); 336 int mac_check_system_acct(struct ucred *cred, struct vnode *vp); 337 int mac_check_system_nfsd(struct ucred *cred); 338 int mac_check_system_reboot(struct ucred *cred, int howto); 339 int mac_check_system_settime(struct ucred *cred); 340 int mac_check_system_swapon(struct ucred *cred, struct vnode *vp); 341 int mac_check_system_swapoff(struct ucred *cred, struct vnode *vp); 342 int mac_check_system_sysctl(struct ucred *cred, struct sysctl_oid *oidp, 343 void *arg1, int arg2, struct sysctl_req *req); 344 int mac_check_vnode_access(struct ucred *cred, struct vnode *vp, 345 int acc_mode); 346 int mac_check_vnode_chdir(struct ucred *cred, struct vnode *dvp); 347 int mac_check_vnode_chroot(struct ucred *cred, struct vnode *dvp); 348 int mac_check_vnode_create(struct ucred *cred, struct vnode *dvp, 349 struct componentname *cnp, struct vattr *vap); 350 int mac_check_vnode_delete(struct ucred *cred, struct vnode *dvp, 351 struct vnode *vp, struct componentname *cnp); 352 int mac_check_vnode_deleteacl(struct ucred *cred, struct vnode *vp, 353 acl_type_t type); 354 int mac_check_vnode_deleteextattr(struct ucred *cred, struct vnode *vp, 355 int attrnamespace, const char *name); 356 int mac_check_vnode_exec(struct ucred *cred, struct vnode *vp, 357 struct image_params *imgp); 358 int mac_check_vnode_getacl(struct ucred *cred, struct vnode *vp, 359 acl_type_t type); 360 int mac_check_vnode_getextattr(struct ucred *cred, struct vnode *vp, 361 int attrnamespace, const char *name, struct uio *uio); 362 int mac_check_vnode_link(struct ucred *cred, struct vnode *dvp, 363 struct vnode *vp, struct componentname *cnp); 364 int mac_check_vnode_listextattr(struct ucred *cred, struct vnode *vp, 365 int attrnamespace); 366 int mac_check_vnode_lookup(struct ucred *cred, struct vnode *dvp, 367 struct componentname *cnp); 368 int mac_check_vnode_mmap(struct ucred *cred, struct vnode *vp, 369 int prot, int flags); 370 int mac_check_vnode_mprotect(struct ucred *cred, struct vnode *vp, 371 int prot); 372 int mac_check_vnode_open(struct ucred *cred, struct vnode *vp, 373 int acc_mode); 374 int mac_check_vnode_poll(struct ucred *active_cred, 375 struct ucred *file_cred, struct vnode *vp); 376 int mac_check_vnode_read(struct ucred *active_cred, 377 struct ucred *file_cred, struct vnode *vp); 378 int mac_check_vnode_readdir(struct ucred *cred, struct vnode *vp); 379 int mac_check_vnode_readlink(struct ucred *cred, struct vnode *vp); 380 int mac_check_vnode_rename_from(struct ucred *cred, struct vnode *dvp, 381 struct vnode *vp, struct componentname *cnp); 382 int mac_check_vnode_rename_to(struct ucred *cred, struct vnode *dvp, 383 struct vnode *vp, int samedir, struct componentname *cnp); 384 int mac_check_vnode_revoke(struct ucred *cred, struct vnode *vp); 385 int mac_check_vnode_setacl(struct ucred *cred, struct vnode *vp, 386 acl_type_t type, struct acl *acl); 387 int mac_check_vnode_setextattr(struct ucred *cred, struct vnode *vp, 388 int attrnamespace, const char *name, struct uio *uio); 389 int mac_check_vnode_setflags(struct ucred *cred, struct vnode *vp, 390 u_long flags); 391 int mac_check_vnode_setmode(struct ucred *cred, struct vnode *vp, 392 mode_t mode); 393 int mac_check_vnode_setowner(struct ucred *cred, struct vnode *vp, 394 uid_t uid, gid_t gid); 395 int mac_check_vnode_setutimes(struct ucred *cred, struct vnode *vp, 396 struct timespec atime, struct timespec mtime); 397 int mac_check_vnode_stat(struct ucred *active_cred, 398 struct ucred *file_cred, struct vnode *vp); 399 int mac_check_vnode_write(struct ucred *active_cred, 400 struct ucred *file_cred, struct vnode *vp); 401 int mac_getsockopt_label(struct ucred *cred, struct socket *so, 402 struct mac *extmac); 403 int mac_getsockopt_peerlabel(struct ucred *cred, struct socket *so, 404 struct mac *extmac); 405 int mac_ioctl_ifnet_get(struct ucred *cred, struct ifreq *ifr, 406 struct ifnet *ifnet); 407 int mac_ioctl_ifnet_set(struct ucred *cred, struct ifreq *ifr, 408 struct ifnet *ifnet); 409 int mac_setsockopt_label(struct ucred *cred, struct socket *so, 410 struct mac *extmac); 411 int mac_pipe_label_set(struct ucred *cred, struct pipepair *pp, 412 struct label *label); 413 void mac_cred_mmapped_drop_perms(struct thread *td, struct ucred *cred); 414 void mac_associate_nfsd_label(struct ucred *cred); 415 int mac_priv_check(struct ucred *cred, int priv); 416 int mac_priv_grant(struct ucred *cred, int priv); 417 418 /* 419 * Calls to help various file systems implement labeling functionality using 420 * their existing EA implementation. 421 */ 422 int vop_stdsetlabel_ea(struct vop_setlabel_args *ap); 423 424 #endif /* !_SYS_SECURITY_MAC_MAC_FRAMEWORK_H_ */ 425