mac_framework.h revision 145076
1279377Simp/*- 2279377Simp * Copyright (c) 1999-2002 Robert N. M. Watson 3279377Simp * Copyright (c) 2001-2003 Networks Associates Technology, Inc. 4279377Simp * All rights reserved. 5279377Simp * 6279377Simp * This software was developed by Robert Watson for the TrustedBSD Project. 7279377Simp * 8279377Simp * This software was developed for the FreeBSD Project in part by Network 9279377Simp * Associates Laboratories, the Security Research Division of Network 10279377Simp * Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), 11279377Simp * as part of the DARPA CHATS research program. 12279377Simp * 13279377Simp * Redistribution and use in source and binary forms, with or without 14279377Simp * modification, are permitted provided that the following conditions 15279377Simp * are met: 16279377Simp * 1. Redistributions of source code must retain the above copyright 17279377Simp * notice, this list of conditions and the following disclaimer. 18279377Simp * 2. Redistributions in binary form must reproduce the above copyright 19279377Simp * notice, this list of conditions and the following disclaimer in the 20279377Simp * documentation and/or other materials provided with the distribution. 21279377Simp * 22279377Simp * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 23279377Simp * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24279377Simp * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25279377Simp * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 26279377Simp * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27279377Simp * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28279377Simp * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29279377Simp * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30279377Simp * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31279377Simp * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32279377Simp * SUCH DAMAGE. 33279377Simp * 34279377Simp * $FreeBSD: head/sys/security/mac/mac_framework.h 145076 2005-04-14 16:03:30Z csjp $ 35279377Simp */ 36279377Simp/* 37279377Simp * Userland/kernel interface for Mandatory Access Control. 38279377Simp * 39279377Simp * The POSIX.1e implementation page may be reached at: 40279377Simp * http://www.trustedbsd.org/ 41279377Simp */ 42279377Simp#ifndef _SYS_MAC_H_ 43279377Simp#define _SYS_MAC_H_ 44279377Simp 45279377Simp#include <sys/_label.h> 46279377Simp 47279377Simp#ifndef _POSIX_MAC 48279377Simp#define _POSIX_MAC 49279377Simp#endif 50279377Simp 51279377Simp/* 52279377Simp * MAC framework-related constants and limits. 53279377Simp */ 54279377Simp#define MAC_MAX_POLICY_NAME 32 55279377Simp#define MAC_MAX_LABEL_ELEMENT_NAME 32 56279377Simp#define MAC_MAX_LABEL_ELEMENT_DATA 4096 57#define MAC_MAX_LABEL_BUF_LEN 8192 58 59struct mac { 60 size_t m_buflen; 61 char *m_string; 62}; 63 64typedef struct mac *mac_t; 65 66#ifndef _KERNEL 67 68/* 69 * Location of the userland MAC framework configuration file. mac.conf 70 * binds policy names to shared libraries that understand those policies, 71 * as well as setting defaults for MAC-aware applications. 72 */ 73#define MAC_CONFFILE "/etc/mac.conf" 74 75/* 76 * Extended non-POSIX.1e interfaces that offer additional services 77 * available from the userland and kernel MAC frameworks. 78 */ 79__BEGIN_DECLS 80int mac_execve(char *fname, char **argv, char **envv, mac_t _label); 81int mac_free(mac_t _label); 82int mac_from_text(mac_t *_label, const char *_text); 83int mac_get_fd(int _fd, mac_t _label); 84int mac_get_file(const char *_path, mac_t _label); 85int mac_get_link(const char *_path, mac_t _label); 86int mac_get_peer(int _fd, mac_t _label); 87int mac_get_pid(pid_t _pid, mac_t _label); 88int mac_get_proc(mac_t _label); 89int mac_is_present(const char *_policyname); 90int mac_prepare(mac_t *_label, const char *_elements); 91int mac_prepare_file_label(mac_t *_label); 92int mac_prepare_ifnet_label(mac_t *_label); 93int mac_prepare_process_label(mac_t *_label); 94int mac_prepare_type(mac_t *_label, const char *_type); 95int mac_set_fd(int _fildes, const mac_t _label); 96int mac_set_file(const char *_path, mac_t _label); 97int mac_set_link(const char *_path, mac_t _label); 98int mac_set_proc(const mac_t _label); 99int mac_syscall(const char *_policyname, int _call, void *_arg); 100int mac_to_text(mac_t mac, char **_text); 101__END_DECLS 102 103#else /* _KERNEL */ 104 105/* 106 * Kernel functions to manage and evaluate labels. 107 */ 108struct bpf_d; 109struct cdev; 110struct componentname; 111struct devfs_dirent; 112struct ifnet; 113struct ifreq; 114struct inpcb; 115struct image_params; 116struct inpcb; 117struct ipq; 118struct m_tag; 119struct mbuf; 120struct mount; 121struct msg; 122struct msqid_kernel; 123struct proc; 124struct semid_kernel; 125struct shmid_kernel; 126struct sockaddr; 127struct socket; 128struct sysctl_oid; 129struct sysctl_req; 130struct pipepair; 131struct thread; 132struct timespec; 133struct ucred; 134struct uio; 135struct vattr; 136struct vnode; 137 138#include <sys/acl.h> /* XXX acl_type_t */ 139 140struct vop_setlabel_args; 141 142/* 143 * Label operations. 144 */ 145void mac_init_bpfdesc(struct bpf_d *); 146void mac_init_cred(struct ucred *); 147void mac_init_devfsdirent(struct devfs_dirent *); 148void mac_init_ifnet(struct ifnet *); 149int mac_init_inpcb(struct inpcb *, int flag); 150void mac_init_sysv_msgmsg(struct msg *); 151void mac_init_sysv_msgqueue(struct msqid_kernel*); 152void mac_init_sysv_sema(struct semid_kernel*); 153void mac_init_sysv_shm(struct shmid_kernel*); 154int mac_init_ipq(struct ipq *, int flag); 155int mac_init_socket(struct socket *, int flag); 156void mac_init_pipe(struct pipepair *); 157int mac_init_mbuf(struct mbuf *mbuf, int flag); 158int mac_init_mbuf_tag(struct m_tag *, int flag); 159void mac_init_mount(struct mount *); 160void mac_init_proc(struct proc *); 161void mac_init_vnode(struct vnode *); 162void mac_copy_mbuf_tag(struct m_tag *, struct m_tag *); 163void mac_copy_vnode_label(struct label *, struct label *label); 164void mac_destroy_bpfdesc(struct bpf_d *); 165void mac_destroy_cred(struct ucred *); 166void mac_destroy_devfsdirent(struct devfs_dirent *); 167void mac_destroy_ifnet(struct ifnet *); 168void mac_destroy_inpcb(struct inpcb *); 169void mac_destroy_sysv_msgmsg(struct msg *); 170void mac_destroy_sysv_msgqueue(struct msqid_kernel *); 171void mac_destroy_sysv_sema(struct semid_kernel *); 172void mac_destroy_sysv_shm(struct shmid_kernel *); 173void mac_destroy_ipq(struct ipq *); 174void mac_destroy_socket(struct socket *); 175void mac_destroy_pipe(struct pipepair *); 176void mac_destroy_proc(struct proc *); 177void mac_destroy_mbuf_tag(struct m_tag *); 178void mac_destroy_mount(struct mount *); 179void mac_destroy_vnode(struct vnode *); 180 181struct label *mac_cred_label_alloc(void); 182void mac_cred_label_free(struct label *label); 183struct label *mac_vnode_label_alloc(void); 184void mac_vnode_label_free(struct label *label); 185 186/* 187 * Labeling event operations: file system objects, and things that 188 * look a lot like file system objects. 189 */ 190void mac_associate_vnode_devfs(struct mount *mp, struct devfs_dirent *de, 191 struct vnode *vp); 192int mac_associate_vnode_extattr(struct mount *mp, struct vnode *vp); 193void mac_associate_vnode_singlelabel(struct mount *mp, struct vnode *vp); 194void mac_create_devfs_device(struct mount *mp, struct cdev *dev, 195 struct devfs_dirent *de); 196void mac_create_devfs_directory(struct mount *mp, char *dirname, 197 int dirnamelen, struct devfs_dirent *de); 198void mac_create_devfs_symlink(struct ucred *cred, struct mount *mp, 199 struct devfs_dirent *dd, struct devfs_dirent *de); 200int mac_create_vnode_extattr(struct ucred *cred, struct mount *mp, 201 struct vnode *dvp, struct vnode *vp, struct componentname *cnp); 202void mac_create_mount(struct ucred *cred, struct mount *mp); 203void mac_create_root_mount(struct ucred *cred, struct mount *mp); 204void mac_relabel_vnode(struct ucred *cred, struct vnode *vp, 205 struct label *newlabel); 206void mac_update_devfsdirent(struct mount *mp, struct devfs_dirent *de, 207 struct vnode *vp); 208 209/* 210 * Labeling event operations: IPC objects. 211 */ 212void mac_create_mbuf_from_socket(struct socket *so, struct mbuf *m); 213void mac_create_socket(struct ucred *cred, struct socket *socket); 214void mac_create_socket_from_socket(struct socket *oldsocket, 215 struct socket *newsocket); 216void mac_set_socket_peer_from_mbuf(struct mbuf *mbuf, 217 struct socket *socket); 218void mac_set_socket_peer_from_socket(struct socket *oldsocket, 219 struct socket *newsocket); 220void mac_create_pipe(struct ucred *cred, struct pipepair *pp); 221 222/* 223 * Labeling event operations: System V IPC primitives 224 */ 225void mac_create_sysv_msgmsg(struct ucred *cred, 226 struct msqid_kernel *msqkptr, struct msg *msgptr); 227void mac_create_sysv_msgqueue(struct ucred *cred, 228 struct msqid_kernel *msqkptr); 229void mac_create_sysv_sema(struct ucred *cred, 230 struct semid_kernel *semakptr); 231void mac_create_sysv_shm(struct ucred *cred, 232 struct shmid_kernel *shmsegptr); 233 234/* 235 * Labeling event operations: network objects. 236 */ 237void mac_create_bpfdesc(struct ucred *cred, struct bpf_d *bpf_d); 238void mac_create_ifnet(struct ifnet *ifp); 239void mac_create_inpcb_from_socket(struct socket *so, struct inpcb *inp); 240void mac_create_ipq(struct mbuf *fragment, struct ipq *ipq); 241void mac_create_datagram_from_ipq(struct ipq *ipq, struct mbuf *datagram); 242void mac_create_fragment(struct mbuf *datagram, struct mbuf *fragment); 243void mac_create_mbuf_from_inpcb(struct inpcb *inp, struct mbuf *m); 244void mac_create_mbuf_from_mbuf(struct mbuf *oldmbuf, struct mbuf *newmbuf); 245void mac_create_mbuf_linklayer(struct ifnet *ifnet, struct mbuf *m); 246void mac_create_mbuf_from_bpfdesc(struct bpf_d *bpf_d, struct mbuf *m); 247void mac_create_mbuf_from_ifnet(struct ifnet *ifnet, struct mbuf *m); 248void mac_create_mbuf_multicast_encap(struct mbuf *oldmbuf, 249 struct ifnet *ifnet, struct mbuf *newmbuf); 250void mac_create_mbuf_netlayer(struct mbuf *oldmbuf, struct mbuf *newmbuf); 251int mac_fragment_match(struct mbuf *fragment, struct ipq *ipq); 252void mac_reflect_mbuf_icmp(struct mbuf *m); 253void mac_reflect_mbuf_tcp(struct mbuf *m); 254void mac_update_ipq(struct mbuf *fragment, struct ipq *ipq); 255void mac_inpcb_sosetlabel(struct socket *so, struct inpcb *inp); 256 257/* 258 * Labeling event operations: processes. 259 */ 260void mac_copy_cred(struct ucred *cr1, struct ucred *cr2); 261int mac_execve_enter(struct image_params *imgp, struct mac *mac_p); 262void mac_execve_exit(struct image_params *imgp); 263void mac_execve_transition(struct ucred *old, struct ucred *new, 264 struct vnode *vp, struct label *interpvnodelabel, 265 struct image_params *imgp); 266int mac_execve_will_transition(struct ucred *old, struct vnode *vp, 267 struct label *interpvnodelabel, struct image_params *imgp); 268void mac_create_proc0(struct ucred *cred); 269void mac_create_proc1(struct ucred *cred); 270void mac_thread_userret(struct thread *td); 271 272/* 273 * Label cleanup operation: This is the inverse complement for the 274 * mac_create and associate type of hooks. This hook lets the policy 275 * module(s) perform a cleanup/flushing operation on the label 276 * associated with the objects, without freeing up the space allocated. 277 * This hook is useful in cases where it is desirable to remove any 278 * labeling reference when recycling any object to a pool. This hook 279 * does not replace the mac_destroy hooks. 280 */ 281void mac_cleanup_sysv_msgmsg(struct msg *msgptr); 282void mac_cleanup_sysv_msgqueue(struct msqid_kernel *msqkptr); 283void mac_cleanup_sysv_sema(struct semid_kernel *semakptr); 284void mac_cleanup_sysv_shm(struct shmid_kernel *shmsegptr); 285 286/* Access control checks. */ 287int mac_check_bpfdesc_receive(struct bpf_d *bpf_d, struct ifnet *ifnet); 288int mac_check_cred_visible(struct ucred *u1, struct ucred *u2); 289int mac_check_ifnet_transmit(struct ifnet *ifnet, struct mbuf *m); 290int mac_check_inpcb_deliver(struct inpcb *inp, struct mbuf *m); 291int mac_check_sysv_msgmsq(struct ucred *cred, struct msg *msgptr, 292 struct msqid_kernel *msqkptr); 293int mac_check_sysv_msgrcv(struct ucred *cred, struct msg *msgptr); 294int mac_check_sysv_msgrmid(struct ucred *cred, struct msg *msgptr); 295int mac_check_sysv_msqget(struct ucred *cred, 296 struct msqid_kernel *msqkptr); 297int mac_check_sysv_msqsnd(struct ucred *cred, 298 struct msqid_kernel *msqkptr); 299int mac_check_sysv_msqrcv(struct ucred *cred, 300 struct msqid_kernel *msqkptr); 301int mac_check_sysv_msqctl(struct ucred *cred, 302 struct msqid_kernel *msqkptr, int cmd); 303int mac_check_sysv_semctl(struct ucred *cred, 304 struct semid_kernel *semakptr, int cmd); 305int mac_check_sysv_semget(struct ucred *cred, 306 struct semid_kernel *semakptr); 307int mac_check_sysv_semop(struct ucred *cred,struct semid_kernel *semakptr, 308 size_t accesstype); 309int mac_check_sysv_shmat(struct ucred *cred, 310 struct shmid_kernel *shmsegptr, int shmflg); 311int mac_check_sysv_shmctl(struct ucred *cred, 312 struct shmid_kernel *shmsegptr, int cmd); 313int mac_check_sysv_shmdt(struct ucred *cred, 314 struct shmid_kernel *shmsegptr); 315int mac_check_sysv_shmget(struct ucred *cred, 316 struct shmid_kernel *shmsegptr, int shmflg); 317int mac_check_kenv_dump(struct ucred *cred); 318int mac_check_kenv_get(struct ucred *cred, char *name); 319int mac_check_kenv_set(struct ucred *cred, char *name, char *value); 320int mac_check_kenv_unset(struct ucred *cred, char *name); 321int mac_check_kld_load(struct ucred *cred, struct vnode *vp); 322int mac_check_kld_stat(struct ucred *cred); 323int mac_check_kld_unload(struct ucred *cred); 324int mac_check_mount_stat(struct ucred *cred, struct mount *mp); 325int mac_check_pipe_ioctl(struct ucred *cred, struct pipepair *pp, 326 unsigned long cmd, void *data); 327int mac_check_pipe_poll(struct ucred *cred, struct pipepair *pp); 328int mac_check_pipe_read(struct ucred *cred, struct pipepair *pp); 329int mac_check_pipe_stat(struct ucred *cred, struct pipepair *pp); 330int mac_check_pipe_write(struct ucred *cred, struct pipepair *pp); 331int mac_check_proc_debug(struct ucred *cred, struct proc *proc); 332int mac_check_proc_sched(struct ucred *cred, struct proc *proc); 333int mac_check_proc_signal(struct ucred *cred, struct proc *proc, 334 int signum); 335int mac_check_socket_bind(struct ucred *cred, struct socket *so, 336 struct sockaddr *sockaddr); 337int mac_check_socket_connect(struct ucred *cred, struct socket *so, 338 struct sockaddr *sockaddr); 339int mac_check_socket_deliver(struct socket *so, struct mbuf *m); 340int mac_check_socket_listen(struct ucred *cred, struct socket *so); 341int mac_check_socket_receive(struct ucred *cred, struct socket *so); 342int mac_check_socket_send(struct ucred *cred, struct socket *so); 343int mac_check_socket_visible(struct ucred *cred, struct socket *so); 344int mac_check_sysarch_ioperm(struct ucred *cred); 345int mac_check_system_acct(struct ucred *cred, struct vnode *vp); 346int mac_check_system_nfsd(struct ucred *cred); 347int mac_check_system_reboot(struct ucred *cred, int howto); 348int mac_check_system_settime(struct ucred *cred); 349int mac_check_system_swapon(struct ucred *cred, struct vnode *vp); 350int mac_check_system_swapoff(struct ucred *cred, struct vnode *vp); 351int mac_check_system_sysctl(struct ucred *cred, struct sysctl_oid *oidp, 352 void *arg1, int arg2, struct sysctl_req *req); 353int mac_check_vnode_access(struct ucred *cred, struct vnode *vp, 354 int acc_mode); 355int mac_check_vnode_chdir(struct ucred *cred, struct vnode *dvp); 356int mac_check_vnode_chroot(struct ucred *cred, struct vnode *dvp); 357int mac_check_vnode_create(struct ucred *cred, struct vnode *dvp, 358 struct componentname *cnp, struct vattr *vap); 359int mac_check_vnode_delete(struct ucred *cred, struct vnode *dvp, 360 struct vnode *vp, struct componentname *cnp); 361int mac_check_vnode_deleteacl(struct ucred *cred, struct vnode *vp, 362 acl_type_t type); 363int mac_check_vnode_deleteextattr(struct ucred *cred, struct vnode *vp, 364 int attrnamespace, const char *name); 365int mac_check_vnode_exec(struct ucred *cred, struct vnode *vp, 366 struct image_params *imgp); 367int mac_check_vnode_getacl(struct ucred *cred, struct vnode *vp, 368 acl_type_t type); 369int mac_check_vnode_getextattr(struct ucred *cred, struct vnode *vp, 370 int attrnamespace, const char *name, struct uio *uio); 371int mac_check_vnode_link(struct ucred *cred, struct vnode *dvp, 372 struct vnode *vp, struct componentname *cnp); 373int mac_check_vnode_listextattr(struct ucred *cred, struct vnode *vp, 374 int attrnamespace); 375int mac_check_vnode_lookup(struct ucred *cred, struct vnode *dvp, 376 struct componentname *cnp); 377int mac_check_vnode_mmap(struct ucred *cred, struct vnode *vp, 378 int prot, int flags); 379int mac_check_vnode_mprotect(struct ucred *cred, struct vnode *vp, 380 int prot); 381int mac_check_vnode_open(struct ucred *cred, struct vnode *vp, 382 int acc_mode); 383int mac_check_vnode_poll(struct ucred *active_cred, 384 struct ucred *file_cred, struct vnode *vp); 385int mac_check_vnode_read(struct ucred *active_cred, 386 struct ucred *file_cred, struct vnode *vp); 387int mac_check_vnode_readdir(struct ucred *cred, struct vnode *vp); 388int mac_check_vnode_readlink(struct ucred *cred, struct vnode *vp); 389int mac_check_vnode_rename_from(struct ucred *cred, struct vnode *dvp, 390 struct vnode *vp, struct componentname *cnp); 391int mac_check_vnode_rename_to(struct ucred *cred, struct vnode *dvp, 392 struct vnode *vp, int samedir, struct componentname *cnp); 393int mac_check_vnode_revoke(struct ucred *cred, struct vnode *vp); 394int mac_check_vnode_setacl(struct ucred *cred, struct vnode *vp, 395 acl_type_t type, struct acl *acl); 396int mac_check_vnode_setextattr(struct ucred *cred, struct vnode *vp, 397 int attrnamespace, const char *name, struct uio *uio); 398int mac_check_vnode_setflags(struct ucred *cred, struct vnode *vp, 399 u_long flags); 400int mac_check_vnode_setmode(struct ucred *cred, struct vnode *vp, 401 mode_t mode); 402int mac_check_vnode_setowner(struct ucred *cred, struct vnode *vp, 403 uid_t uid, gid_t gid); 404int mac_check_vnode_setutimes(struct ucred *cred, struct vnode *vp, 405 struct timespec atime, struct timespec mtime); 406int mac_check_vnode_stat(struct ucred *active_cred, 407 struct ucred *file_cred, struct vnode *vp); 408int mac_check_vnode_write(struct ucred *active_cred, 409 struct ucred *file_cred, struct vnode *vp); 410int mac_getsockopt_label(struct ucred *cred, struct socket *so, 411 struct mac *extmac); 412int mac_getsockopt_peerlabel(struct ucred *cred, struct socket *so, 413 struct mac *extmac); 414int mac_ioctl_ifnet_get(struct ucred *cred, struct ifreq *ifr, 415 struct ifnet *ifnet); 416int mac_ioctl_ifnet_set(struct ucred *cred, struct ifreq *ifr, 417 struct ifnet *ifnet); 418int mac_setsockopt_label(struct ucred *cred, struct socket *so, 419 struct mac *extmac); 420int mac_pipe_label_set(struct ucred *cred, struct pipepair *pp, 421 struct label *label); 422void mac_cred_mmapped_drop_perms(struct thread *td, struct ucred *cred); 423 424/* 425 * Calls to help various file systems implement labeling functionality 426 * using their existing EA implementation. 427 */ 428int vop_stdsetlabel_ea(struct vop_setlabel_args *ap); 429 430#endif /* !_KERNEL */ 431 432#endif /* !_SYS_MAC_H_ */ 433