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 #include <sys/_label.h> 54 55 struct bpf_d; 56 struct cdev; 57 struct componentname; 58 struct devfs_dirent; 59 struct ifnet; 60 struct ifreq; 61 struct image_params; 62 struct inpcb; 63 struct ipq; 64 struct ksem; 65 struct m_tag; 66 struct mac; 67 struct mbuf; 68 struct mount; 69 struct msg; 70 struct msqid_kernel; 71 struct proc; 72 struct semid_kernel; 73 struct shmid_kernel; 74 struct sockaddr; 75 struct socket; 76 struct sysctl_oid; 77 struct sysctl_req; 78 struct pipepair; 79 struct thread; 80 struct timespec; 81 struct ucred; 82 struct uio; 83 struct vattr; 84 struct vnode; 85 struct vop_setlabel_args; 86 87 #include <sys/acl.h> /* XXX acl_type_t */ 88 89 /* 90 * Kernel functions to manage and evaluate labels. 91 */ 92 93 void mac_init_bpfdesc(struct bpf_d *); 94 void mac_init_cred(struct ucred *); 95 void mac_init_devfsdirent(struct devfs_dirent *); 96 void mac_init_ifnet(struct ifnet *); 97 int mac_init_inpcb(struct inpcb *, int flag); 98 void mac_init_sysv_msgmsg(struct msg *); 99 void mac_init_sysv_msgqueue(struct msqid_kernel*); 100 void mac_init_sysv_sem(struct semid_kernel*); 101 void mac_init_sysv_shm(struct shmid_kernel*); 102 int mac_init_ipq(struct ipq *, int flag); 103 int mac_init_socket(struct socket *, int flag); 104 void mac_init_pipe(struct pipepair *); 105 void mac_init_posix_sem(struct ksem *); 106 int mac_init_mbuf(struct mbuf *mbuf, int flag); 107 int mac_init_mbuf_tag(struct m_tag *, int flag); 108 void mac_init_mount(struct mount *); 109 void mac_init_proc(struct proc *); 110 void mac_init_vnode(struct vnode *); 111 void mac_copy_mbuf(struct mbuf *m_from, struct mbuf *m_to); 112 void mac_copy_mbuf_tag(struct m_tag *, struct m_tag *); 113 void mac_copy_vnode_label(struct label *, struct label *label); 114 void mac_destroy_bpfdesc(struct bpf_d *); 115 void mac_destroy_cred(struct ucred *); 116 void mac_destroy_devfsdirent(struct devfs_dirent *); 117 void mac_destroy_ifnet(struct ifnet *); 118 void mac_destroy_inpcb(struct inpcb *); 119 void mac_destroy_sysv_msgmsg(struct msg *); 120 void mac_destroy_sysv_msgqueue(struct msqid_kernel *); 121 void mac_destroy_sysv_sem(struct semid_kernel *); 122 void mac_destroy_sysv_shm(struct shmid_kernel *); 123 void mac_destroy_ipq(struct ipq *); 124 void mac_destroy_socket(struct socket *); 125 void mac_destroy_pipe(struct pipepair *); 126 void mac_destroy_posix_sem(struct ksem *); 127 void mac_destroy_proc(struct proc *); 128 void mac_destroy_mbuf_tag(struct m_tag *); 129 void mac_destroy_mount(struct mount *); 130 void mac_destroy_vnode(struct vnode *); 131 132 struct label *mac_cred_label_alloc(void); 133 void mac_cred_label_free(struct label *label); 134 struct label *mac_vnode_label_alloc(void); 135 void mac_vnode_label_free(struct label *label); 136 137 /* 138 * Labeling event operations: file system objects, and things that 139 * look a lot like file system objects. 140 */ 141 void mac_associate_vnode_devfs(struct mount *mp, struct devfs_dirent *de, 142 struct vnode *vp); 143 int mac_associate_vnode_extattr(struct mount *mp, struct vnode *vp); 144 void mac_associate_vnode_singlelabel(struct mount *mp, struct vnode *vp); 145 void mac_create_devfs_device(struct ucred *cred, struct mount *mp, 146 struct cdev *dev, struct devfs_dirent *de); 147 void mac_create_devfs_directory(struct mount *mp, char *dirname, 148 int dirnamelen, struct devfs_dirent *de); 149 void mac_create_devfs_symlink(struct ucred *cred, struct mount *mp, 150 struct devfs_dirent *dd, struct devfs_dirent *de); 151 int mac_create_vnode_extattr(struct ucred *cred, struct mount *mp, 152 struct vnode *dvp, struct vnode *vp, struct componentname *cnp); 153 void mac_create_mount(struct ucred *cred, struct mount *mp); 154 void mac_relabel_vnode(struct ucred *cred, struct vnode *vp, 155 struct label *newlabel); 156 void mac_update_devfsdirent(struct mount *mp, struct devfs_dirent *de, 157 struct vnode *vp); 158 159 /* 160 * Labeling event operations: IPC objects. 161 */ 162 void mac_create_mbuf_from_socket(struct socket *so, struct mbuf *m); 163 void mac_create_socket(struct ucred *cred, struct socket *socket); 164 void mac_create_socket_from_socket(struct socket *oldsocket, 165 struct socket *newsocket); 166 void mac_set_socket_peer_from_mbuf(struct mbuf *mbuf, 167 struct socket *socket); 168 void mac_set_socket_peer_from_socket(struct socket *oldsocket, 169 struct socket *newsocket); 170 void mac_create_pipe(struct ucred *cred, struct pipepair *pp); 171 172 /* 173 * Labeling event operations: System V IPC primitives 174 */ 175 void mac_create_sysv_msgmsg(struct ucred *cred, 176 struct msqid_kernel *msqkptr, struct msg *msgptr); 177 void mac_create_sysv_msgqueue(struct ucred *cred, 178 struct msqid_kernel *msqkptr); 179 void mac_create_sysv_sem(struct ucred *cred, 180 struct semid_kernel *semakptr); 181 void mac_create_sysv_shm(struct ucred *cred, 182 struct shmid_kernel *shmsegptr); 183 184 /* 185 * Labeling event operations: POSIX (global/inter-process) semaphores. 186 */ 187 void mac_create_posix_sem(struct ucred *cred, struct ksem *ksemptr); 188 189 190 /* 191 * Labeling event operations: network objects. 192 */ 193 void mac_create_bpfdesc(struct ucred *cred, struct bpf_d *bpf_d); 194 void mac_create_ifnet(struct ifnet *ifp); 195 void mac_create_inpcb_from_socket(struct socket *so, struct inpcb *inp); 196 void mac_create_ipq(struct mbuf *fragment, struct ipq *ipq); 197 void mac_create_datagram_from_ipq(struct ipq *ipq, struct mbuf *datagram); 198 void mac_create_fragment(struct mbuf *datagram, struct mbuf *fragment); 199 void mac_create_mbuf_from_inpcb(struct inpcb *inp, struct mbuf *m); 200 void mac_create_mbuf_linklayer(struct ifnet *ifnet, struct mbuf *m); 201 void mac_create_mbuf_from_bpfdesc(struct bpf_d *bpf_d, struct mbuf *m); 202 void mac_create_mbuf_from_ifnet(struct ifnet *ifnet, struct mbuf *m); 203 void mac_create_mbuf_multicast_encap(struct mbuf *oldmbuf, 204 struct ifnet *ifnet, struct mbuf *newmbuf); 205 void mac_create_mbuf_netlayer(struct mbuf *oldmbuf, struct mbuf *newmbuf); 206 int mac_fragment_match(struct mbuf *fragment, struct ipq *ipq); 207 void mac_reflect_mbuf_icmp(struct mbuf *m); 208 void mac_reflect_mbuf_tcp(struct mbuf *m); 209 void mac_update_ipq(struct mbuf *fragment, struct ipq *ipq); 210 void mac_inpcb_sosetlabel(struct socket *so, struct inpcb *inp); 211 212 void mac_create_mbuf_from_firewall(struct mbuf *m); 213 void mac_destroy_syncache(struct label **label); 214 int mac_init_syncache(struct label **label); 215 void mac_init_syncache_from_inpcb(struct label *label, struct inpcb *inp); 216 void mac_create_mbuf_from_syncache(struct label *sc_label, struct mbuf *m); 217 /* 218 * Labeling event operations: processes. 219 */ 220 void mac_copy_cred(struct ucred *cr1, struct ucred *cr2); 221 int mac_execve_enter(struct image_params *imgp, struct mac *mac_p); 222 void mac_execve_exit(struct image_params *imgp); 223 void mac_execve_transition(struct ucred *old, struct ucred *new, 224 struct vnode *vp, struct label *interpvnodelabel, 225 struct image_params *imgp); 226 int mac_execve_will_transition(struct ucred *old, struct vnode *vp, 227 struct label *interpvnodelabel, struct image_params *imgp); 228 void mac_create_proc0(struct ucred *cred); 229 void mac_create_proc1(struct ucred *cred); 230 void mac_thread_userret(struct thread *td); 231 232 /* 233 * Label cleanup operation: This is the inverse complement for the 234 * mac_create and associate type of hooks. This hook lets the policy 235 * module(s) perform a cleanup/flushing operation on the label 236 * associated with the objects, without freeing up the space allocated. 237 * This hook is useful in cases where it is desirable to remove any 238 * labeling reference when recycling any object to a pool. This hook 239 * does not replace the mac_destroy hooks. 240 */ 241 void mac_cleanup_sysv_msgmsg(struct msg *msgptr); 242 void mac_cleanup_sysv_msgqueue(struct msqid_kernel *msqkptr); 243 void mac_cleanup_sysv_sem(struct semid_kernel *semakptr); 244 void mac_cleanup_sysv_shm(struct shmid_kernel *shmsegptr); 245 246 /* Access control checks. */ 247 int mac_check_bpfdesc_receive(struct bpf_d *bpf_d, struct ifnet *ifnet); 248 int mac_check_cred_visible(struct ucred *u1, struct ucred *u2); 249 int mac_check_ifnet_transmit(struct ifnet *ifnet, struct mbuf *m); 250 int mac_check_inpcb_deliver(struct inpcb *inp, struct mbuf *m); 251 int mac_check_sysv_msgmsq(struct ucred *cred, struct msg *msgptr, 252 struct msqid_kernel *msqkptr); 253 int mac_check_sysv_msgrcv(struct ucred *cred, struct msg *msgptr); 254 int mac_check_sysv_msgrmid(struct ucred *cred, struct msg *msgptr); 255 int mac_check_sysv_msqget(struct ucred *cred, 256 struct msqid_kernel *msqkptr); 257 int mac_check_sysv_msqsnd(struct ucred *cred, 258 struct msqid_kernel *msqkptr); 259 int mac_check_sysv_msqrcv(struct ucred *cred, 260 struct msqid_kernel *msqkptr); 261 int mac_check_sysv_msqctl(struct ucred *cred, 262 struct msqid_kernel *msqkptr, int cmd); 263 int mac_check_sysv_semctl(struct ucred *cred, 264 struct semid_kernel *semakptr, int cmd); 265 int mac_check_sysv_semget(struct ucred *cred, 266 struct semid_kernel *semakptr); 267 int mac_check_sysv_semop(struct ucred *cred,struct semid_kernel *semakptr, 268 size_t accesstype); 269 int mac_check_sysv_shmat(struct ucred *cred, 270 struct shmid_kernel *shmsegptr, int shmflg); 271 int mac_check_sysv_shmctl(struct ucred *cred, 272 struct shmid_kernel *shmsegptr, int cmd); 273 int mac_check_sysv_shmdt(struct ucred *cred, 274 struct shmid_kernel *shmsegptr); 275 int mac_check_sysv_shmget(struct ucred *cred, 276 struct shmid_kernel *shmsegptr, int shmflg); 277 int mac_check_kenv_dump(struct ucred *cred); 278 int mac_check_kenv_get(struct ucred *cred, char *name); 279 int mac_check_kenv_set(struct ucred *cred, char *name, char *value); 280 int mac_check_kenv_unset(struct ucred *cred, char *name); 281 int mac_check_kld_load(struct ucred *cred, struct vnode *vp); 282 int mac_check_kld_stat(struct ucred *cred); 283 int mac_check_kld_unload(struct ucred *cred); 284 int mac_check_mount_stat(struct ucred *cred, struct mount *mp); 285 int mac_check_pipe_ioctl(struct ucred *cred, struct pipepair *pp, 286 unsigned long cmd, void *data); 287 int mac_check_pipe_poll(struct ucred *cred, struct pipepair *pp); 288 int mac_check_pipe_read(struct ucred *cred, struct pipepair *pp); 289 int mac_check_pipe_stat(struct ucred *cred, struct pipepair *pp); 290 int mac_check_pipe_write(struct ucred *cred, struct pipepair *pp); 291 int mac_check_posix_sem_destroy(struct ucred *cred, struct ksem *ksemptr); 292 int mac_check_posix_sem_getvalue(struct ucred *cred,struct ksem *ksemptr); 293 int mac_check_posix_sem_open(struct ucred *cred, struct ksem *ksemptr); 294 int mac_check_posix_sem_post(struct ucred *cred, struct ksem *ksemptr); 295 int mac_check_posix_sem_unlink(struct ucred *cred, struct ksem *ksemptr); 296 int mac_check_posix_sem_wait(struct ucred *cred, struct ksem *ksemptr); 297 int mac_check_proc_debug(struct ucred *cred, struct proc *proc); 298 int mac_check_proc_sched(struct ucred *cred, struct proc *proc); 299 int mac_check_proc_setuid(struct proc *proc, struct ucred *cred, 300 uid_t uid); 301 int mac_check_proc_seteuid(struct proc *proc, struct ucred *cred, 302 uid_t euid); 303 int mac_check_proc_setgid(struct proc *proc, struct ucred *cred, 304 gid_t gid); 305 int mac_check_proc_setegid(struct proc *proc, struct ucred *cred, 306 gid_t egid); 307 int mac_check_proc_setgroups(struct proc *proc, struct ucred *cred, 308 int ngroups, gid_t *gidset); 309 int mac_check_proc_setreuid(struct proc *proc, struct ucred *cred, 310 uid_t ruid, uid_t euid); 311 int mac_check_proc_setregid(struct proc *proc, struct ucred *cred, 312 gid_t rgid, gid_t egid); 313 int mac_check_proc_setresuid(struct proc *proc, struct ucred *cred, 314 uid_t ruid, uid_t euid, uid_t suid); 315 int mac_check_proc_setresgid(struct proc *proc, struct ucred *cred, 316 gid_t rgid, gid_t egid, gid_t sgid); 317 int mac_check_proc_signal(struct ucred *cred, struct proc *proc, 318 int signum); 319 int mac_check_proc_wait(struct ucred *cred, struct proc *proc); 320 int mac_check_socket_accept(struct ucred *cred, struct socket *so); 321 int mac_check_socket_bind(struct ucred *cred, struct socket *so, 322 struct sockaddr *sockaddr); 323 int mac_check_socket_connect(struct ucred *cred, struct socket *so, 324 struct sockaddr *sockaddr); 325 int mac_check_socket_create(struct ucred *cred, int domain, int type, 326 int protocol); 327 int mac_check_socket_deliver(struct socket *so, struct mbuf *m); 328 int mac_check_socket_listen(struct ucred *cred, struct socket *so); 329 int mac_check_socket_poll(struct ucred *cred, struct socket *so); 330 int mac_check_socket_receive(struct ucred *cred, struct socket *so); 331 int mac_check_socket_send(struct ucred *cred, struct socket *so); 332 int mac_check_socket_stat(struct ucred *cred, struct socket *so); 333 int mac_check_socket_visible(struct ucred *cred, struct socket *so); 334 int mac_check_sysarch_ioperm(struct ucred *cred); 335 int mac_check_system_acct(struct ucred *cred, struct vnode *vp); 336 int mac_check_system_nfsd(struct ucred *cred); 337 int mac_check_system_reboot(struct ucred *cred, int howto); 338 int mac_check_system_settime(struct ucred *cred); 339 int mac_check_system_swapon(struct ucred *cred, struct vnode *vp); 340 int mac_check_system_swapoff(struct ucred *cred, struct vnode *vp); 341 int mac_check_system_sysctl(struct ucred *cred, struct sysctl_oid *oidp, 342 void *arg1, int arg2, struct sysctl_req *req); 343 int mac_check_vnode_access(struct ucred *cred, struct vnode *vp, 344 int acc_mode); 345 int mac_check_vnode_chdir(struct ucred *cred, struct vnode *dvp); 346 int mac_check_vnode_chroot(struct ucred *cred, struct vnode *dvp); 347 int mac_check_vnode_create(struct ucred *cred, struct vnode *dvp, 348 struct componentname *cnp, struct vattr *vap); 349 int mac_check_vnode_delete(struct ucred *cred, struct vnode *dvp, 350 struct vnode *vp, struct componentname *cnp); 351 int mac_check_vnode_deleteacl(struct ucred *cred, struct vnode *vp, 352 acl_type_t type); 353 int mac_check_vnode_deleteextattr(struct ucred *cred, struct vnode *vp, 354 int attrnamespace, const char *name); 355 int mac_check_vnode_exec(struct ucred *cred, struct vnode *vp, 356 struct image_params *imgp); 357 int mac_check_vnode_getacl(struct ucred *cred, struct vnode *vp, 358 acl_type_t type); 359 int mac_check_vnode_getextattr(struct ucred *cred, struct vnode *vp, 360 int attrnamespace, const char *name, struct uio *uio); 361 int mac_check_vnode_link(struct ucred *cred, struct vnode *dvp, 362 struct vnode *vp, struct componentname *cnp); 363 int mac_check_vnode_listextattr(struct ucred *cred, struct vnode *vp, 364 int attrnamespace); 365 int mac_check_vnode_lookup(struct ucred *cred, struct vnode *dvp, 366 struct componentname *cnp); 367 int mac_check_vnode_mmap(struct ucred *cred, struct vnode *vp, 368 int prot, int flags); 369 int mac_check_vnode_mprotect(struct ucred *cred, struct vnode *vp, 370 int prot); 371 int mac_check_vnode_open(struct ucred *cred, struct vnode *vp, 372 int acc_mode); 373 int mac_check_vnode_poll(struct ucred *active_cred, 374 struct ucred *file_cred, struct vnode *vp); 375 int mac_check_vnode_read(struct ucred *active_cred, 376 struct ucred *file_cred, struct vnode *vp); 377 int mac_check_vnode_readdir(struct ucred *cred, struct vnode *vp); 378 int mac_check_vnode_readlink(struct ucred *cred, struct vnode *vp); 379 int mac_check_vnode_rename_from(struct ucred *cred, struct vnode *dvp, 380 struct vnode *vp, struct componentname *cnp); 381 int mac_check_vnode_rename_to(struct ucred *cred, struct vnode *dvp, 382 struct vnode *vp, int samedir, struct componentname *cnp); 383 int mac_check_vnode_revoke(struct ucred *cred, struct vnode *vp); 384 int mac_check_vnode_setacl(struct ucred *cred, struct vnode *vp, 385 acl_type_t type, struct acl *acl); 386 int mac_check_vnode_setextattr(struct ucred *cred, struct vnode *vp, 387 int attrnamespace, const char *name, struct uio *uio); 388 int mac_check_vnode_setflags(struct ucred *cred, struct vnode *vp, 389 u_long flags); 390 int mac_check_vnode_setmode(struct ucred *cred, struct vnode *vp, 391 mode_t mode); 392 int mac_check_vnode_setowner(struct ucred *cred, struct vnode *vp, 393 uid_t uid, gid_t gid); 394 int mac_check_vnode_setutimes(struct ucred *cred, struct vnode *vp, 395 struct timespec atime, struct timespec mtime); 396 int mac_check_vnode_stat(struct ucred *active_cred, 397 struct ucred *file_cred, struct vnode *vp); 398 int mac_check_vnode_write(struct ucred *active_cred, 399 struct ucred *file_cred, struct vnode *vp); 400 int mac_getsockopt_label(struct ucred *cred, struct socket *so, 401 struct mac *extmac); 402 int mac_getsockopt_peerlabel(struct ucred *cred, struct socket *so, 403 struct mac *extmac); 404 int mac_ioctl_ifnet_get(struct ucred *cred, struct ifreq *ifr, 405 struct ifnet *ifnet); 406 int mac_ioctl_ifnet_set(struct ucred *cred, struct ifreq *ifr, 407 struct ifnet *ifnet); 408 int mac_setsockopt_label(struct ucred *cred, struct socket *so, 409 struct mac *extmac); 410 int mac_pipe_label_set(struct ucred *cred, struct pipepair *pp, 411 struct label *label); 412 void mac_cred_mmapped_drop_perms(struct thread *td, struct ucred *cred); 413 void mac_associate_nfsd_label(struct ucred *cred); 414 int mac_priv_check(struct ucred *cred, int priv); 415 int mac_priv_grant(struct ucred *cred, int priv); 416 417 /* 418 * Calls to help various file systems implement labeling functionality 419 * using their existing EA implementation. 420 */ 421 int vop_stdsetlabel_ea(struct vop_setlabel_args *ap); 422 423 #endif /* !_SYS_SECURITY_MAC_MAC_FRAMEWORK_H_ */ 424