mac.h revision 106025
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 NAI Labs, 9 * the Security Research Division of Network Associates, Inc. under 10 * DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the DARPA 11 * 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 * 3. The names of the authors may not be used to endorse or promote 22 * products derived from this software without specific prior written 23 * permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 28 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 35 * SUCH DAMAGE. 36 * 37 * $FreeBSD: head/sys/sys/mac.h 106025 2002-10-27 07:12:34Z rwatson $ 38 */ 39/* 40 * Userland/kernel interface for Mandatory Access Control. 41 * 42 * The POSIX.1e implementation page may be reached at: 43 * http://www.trustedbsd.org/ 44 */ 45#ifndef _SYS_MAC_H 46#define _SYS_MAC_H 47 48#include <sys/_label.h> 49 50#ifndef _POSIX_MAC 51#define _POSIX_MAC 52#endif 53 54/* 55 * XXXMAC: The single MAC extended attribute will be deprecated once 56 * compound EA writes on a single target file can be performed cleanly 57 * with UFS2. 58 */ 59#define FREEBSD_MAC_EXTATTR_NAME "freebsd.mac" 60#define FREEBSD_MAC_EXTATTR_NAMESPACE EXTATTR_NAMESPACE_SYSTEM 61 62/* 63 * MAC framework-related constants and limits. 64 */ 65#define MAC_MAX_POLICY_NAME 32 66#define MAC_MAX_LABEL_ELEMENT_NAME 32 67#define MAC_MAX_LABEL_ELEMENT_DATA 4096 68#define MAC_MAX_LABEL_BUF_LEN 8192 69 70struct mac { 71 size_t m_buflen; 72 char *m_string; 73}; 74 75typedef struct mac *mac_t; 76 77#ifndef _KERNEL 78 79/* 80 * Location of the userland MAC framework configuration file. mac.conf 81 * binds policy names to shared libraries that understand those policies, 82 * as well as setting defaults for MAC-aware applications. 83 */ 84#define MAC_CONFFILE "/etc/mac.conf" 85 86/* 87 * Extended non-POSIX.1e interfaces that offer additional services 88 * available from the userland and kernel MAC frameworks. 89 */ 90int mac_free(mac_t _label); 91int mac_from_text(mac_t *_label, const char *_text); 92int mac_get_fd(int _fd, mac_t _label); 93int mac_get_file(const char *_path, mac_t _label); 94int mac_get_link(const char *_path, mac_t _label); 95int mac_get_pid(pid_t _pid, mac_t _label); 96int mac_get_proc(mac_t _label); 97int mac_is_present(const char *_policyname); 98int mac_prepare(mac_t *_label, char *_elements); 99int mac_prepare_file_label(mac_t *_label); 100int mac_prepare_ifnet_label(mac_t *_label); 101int mac_prepare_process_label(mac_t *_label); 102int mac_set_fd(int _fildes, const mac_t _label); 103int mac_set_file(const char *_path, mac_t _label); 104int mac_set_link(const char *_path, mac_t _label); 105int mac_set_proc(const mac_t _label); 106int mac_syscall(const char *_policyname, int _call, void *_arg); 107int mac_to_text(mac_t mac, char **_text); 108 109#endif /* !_KERNEL */ 110 111/* 112 * XXXMAC: For compatibility until the labels on disk are changed. We 113 * will enable the definitions in various policy include files once 114 * these can be disabled. 115 */ 116 117#define MAC_BIBA_MAX_COMPARTMENTS 256 118 119struct mac_biba_element { 120 u_short mbe_type; 121 u_short mbe_grade; 122 u_char mbe_compartments[MAC_BIBA_MAX_COMPARTMENTS >> 3]; 123}; 124 125struct mac_biba { 126 int mb_flags; 127 struct mac_biba_element mb_single; 128 struct mac_biba_element mb_rangelow, mb_rangehigh; 129}; 130 131#define MAC_MLS_MAX_COMPARTMENTS 256 132 133struct mac_mls_element { 134 u_short mme_type; 135 u_short mme_level; 136 u_char mme_compartments[MAC_MLS_MAX_COMPARTMENTS >> 3]; 137}; 138 139struct mac_mls { 140 int mm_flags; 141 struct mac_mls_element mm_single; 142 struct mac_mls_element mm_rangelow, mm_rangehigh; 143}; 144 145struct mac_sebsd { 146 uint32_t ms_psid; 147}; 148 149struct oldmac { 150 int m_macflags; 151 struct mac_biba m_biba; 152 struct mac_mls m_mls; 153 struct mac_sebsd m_sebsd; 154}; 155 156#ifdef _KERNEL 157 158/* 159 * Kernel functions to manage and evaluate labels. 160 */ 161struct bpf_d; 162struct componentname; 163struct devfs_dirent; 164struct ifnet; 165struct ifreq; 166struct ipq; 167struct mbuf; 168struct mount; 169struct proc; 170struct sockaddr; 171struct socket; 172struct pipe; 173struct thread; 174struct timespec; 175struct ucred; 176struct uio; 177struct vattr; 178struct vnode; 179 180#include <sys/acl.h> /* XXX acl_type_t */ 181 182struct vop_refreshlabel_args; 183struct vop_setlabel_args; 184 185/* 186 * Label operations. 187 */ 188void mac_init_bpfdesc(struct bpf_d *); 189void mac_init_cred(struct ucred *); 190void mac_init_devfsdirent(struct devfs_dirent *); 191void mac_init_ifnet(struct ifnet *); 192void mac_init_ipq(struct ipq *); 193int mac_init_socket(struct socket *, int flag); 194void mac_init_pipe(struct pipe *); 195int mac_init_mbuf(struct mbuf *m, int flag); 196void mac_init_mount(struct mount *); 197void mac_init_vnode(struct vnode *); 198void mac_init_vnode_label(struct label *); 199void mac_copy_vnode_label(struct label *, struct label *label); 200void mac_destroy_bpfdesc(struct bpf_d *); 201void mac_destroy_cred(struct ucred *); 202void mac_destroy_devfsdirent(struct devfs_dirent *); 203void mac_destroy_ifnet(struct ifnet *); 204void mac_destroy_ipq(struct ipq *); 205void mac_destroy_socket(struct socket *); 206void mac_destroy_pipe(struct pipe *); 207void mac_destroy_mbuf(struct mbuf *); 208void mac_destroy_mount(struct mount *); 209void mac_destroy_vnode(struct vnode *); 210void mac_destroy_vnode_label(struct label *); 211 212/* 213 * Labeling event operations: file system objects, and things that 214 * look a lot like file system objects. 215 */ 216void mac_associate_vnode_devfs(struct mount *mp, struct devfs_dirent *de, 217 struct vnode *vp); 218int mac_associate_vnode_extattr(struct mount *mp, struct vnode *vp); 219void mac_associate_vnode_singlelabel(struct mount *mp, struct vnode *vp); 220void mac_create_devfs_device(dev_t dev, struct devfs_dirent *de); 221void mac_create_devfs_directory(char *dirname, int dirnamelen, 222 struct devfs_dirent *de); 223void mac_create_devfs_symlink(struct ucred *cred, struct devfs_dirent *dd, 224 struct devfs_dirent *de); 225void mac_create_devfs_vnode(struct devfs_dirent *de, struct vnode *vp); 226int mac_create_vnode_extattr(struct ucred *cred, struct mount *mp, 227 struct vnode *dvp, struct vnode *vp, struct componentname *cnp); 228void mac_create_mount(struct ucred *cred, struct mount *mp); 229void mac_create_root_mount(struct ucred *cred, struct mount *mp); 230void mac_relabel_vnode(struct ucred *cred, struct vnode *vp, 231 struct label *newlabel); 232void mac_update_devfsdirent(struct devfs_dirent *de, struct vnode *vp); 233 234/* 235 * Labeling event operations: IPC objects. 236 */ 237void mac_create_mbuf_from_socket(struct socket *so, struct mbuf *m); 238void mac_create_socket(struct ucred *cred, struct socket *socket); 239void mac_create_socket_from_socket(struct socket *oldsocket, 240 struct socket *newsocket); 241void mac_set_socket_peer_from_mbuf(struct mbuf *mbuf, 242 struct socket *socket); 243void mac_set_socket_peer_from_socket(struct socket *oldsocket, 244 struct socket *newsocket); 245void mac_create_pipe(struct ucred *cred, struct pipe *pipe); 246 247/* 248 * Labeling event operations: network objects. 249 */ 250void mac_create_bpfdesc(struct ucred *cred, struct bpf_d *bpf_d); 251void mac_create_ifnet(struct ifnet *ifp); 252void mac_create_ipq(struct mbuf *fragment, struct ipq *ipq); 253void mac_create_datagram_from_ipq(struct ipq *ipq, struct mbuf *datagram); 254void mac_create_fragment(struct mbuf *datagram, struct mbuf *fragment); 255void mac_create_mbuf_from_mbuf(struct mbuf *oldmbuf, struct mbuf *newmbuf); 256void mac_create_mbuf_linklayer(struct ifnet *ifnet, struct mbuf *m); 257void mac_create_mbuf_from_bpfdesc(struct bpf_d *bpf_d, struct mbuf *m); 258void mac_create_mbuf_from_ifnet(struct ifnet *ifnet, struct mbuf *m); 259void mac_create_mbuf_multicast_encap(struct mbuf *oldmbuf, 260 struct ifnet *ifnet, struct mbuf *newmbuf); 261void mac_create_mbuf_netlayer(struct mbuf *oldmbuf, struct mbuf *newmbuf); 262int mac_fragment_match(struct mbuf *fragment, struct ipq *ipq); 263void mac_update_ipq(struct mbuf *fragment, struct ipq *ipq); 264 265/* 266 * Labeling event operations: processes. 267 */ 268void mac_create_cred(struct ucred *cred_parent, struct ucred *cred_child); 269void mac_execve_transition(struct ucred *old, struct ucred *new, 270 struct vnode *vp); 271int mac_execve_will_transition(struct ucred *old, struct vnode *vp); 272void mac_create_proc0(struct ucred *cred); 273void mac_create_proc1(struct ucred *cred); 274void mac_thread_userret(struct thread *td); 275 276/* Access control checks. */ 277int mac_check_bpfdesc_receive(struct bpf_d *bpf_d, struct ifnet *ifnet); 278int mac_check_cred_visible(struct ucred *u1, struct ucred *u2); 279int mac_check_ifnet_transmit(struct ifnet *ifnet, struct mbuf *m); 280int mac_check_mount_stat(struct ucred *cred, struct mount *mp); 281int mac_check_pipe_ioctl(struct ucred *cred, struct pipe *pipe, 282 unsigned long cmd, void *data); 283int mac_check_pipe_poll(struct ucred *cred, struct pipe *pipe); 284int mac_check_pipe_read(struct ucred *cred, struct pipe *pipe); 285int mac_check_pipe_stat(struct ucred *cred, struct pipe *pipe); 286int mac_check_pipe_write(struct ucred *cred, struct pipe *pipe); 287int mac_check_proc_debug(struct ucred *cred, struct proc *proc); 288int mac_check_proc_sched(struct ucred *cred, struct proc *proc); 289int mac_check_proc_signal(struct ucred *cred, struct proc *proc, 290 int signum); 291int mac_check_socket_bind(struct ucred *cred, struct socket *so, 292 struct sockaddr *sockaddr); 293int mac_check_socket_connect(struct ucred *cred, struct socket *so, 294 struct sockaddr *sockaddr); 295int mac_check_socket_deliver(struct socket *so, struct mbuf *m); 296int mac_check_socket_listen(struct ucred *cred, struct socket *so); 297int mac_check_socket_receive(struct ucred *cred, struct socket *so); 298int mac_check_socket_send(struct ucred *cred, struct socket *so); 299int mac_check_socket_visible(struct ucred *cred, struct socket *so); 300int mac_check_system_reboot(struct ucred *cred, int howto); 301int mac_check_system_swapon(struct ucred *cred, struct vnode *vp); 302int mac_check_system_sysctl(struct ucred *cred, int *name, 303 u_int namelen, void *old, size_t *oldlenp, int inkernel, 304 void *new, size_t newlen); 305int mac_check_vnode_access(struct ucred *cred, struct vnode *vp, 306 int flags); 307int mac_check_vnode_chdir(struct ucred *cred, struct vnode *dvp); 308int mac_check_vnode_chroot(struct ucred *cred, struct vnode *dvp); 309int mac_check_vnode_create(struct ucred *cred, struct vnode *dvp, 310 struct componentname *cnp, struct vattr *vap); 311int mac_check_vnode_delete(struct ucred *cred, struct vnode *dvp, 312 struct vnode *vp, struct componentname *cnp); 313int mac_check_vnode_deleteacl(struct ucred *cred, struct vnode *vp, 314 acl_type_t type); 315int mac_check_vnode_exec(struct ucred *cred, struct vnode *vp); 316int mac_check_vnode_getacl(struct ucred *cred, struct vnode *vp, 317 acl_type_t type); 318int mac_check_vnode_getextattr(struct ucred *cred, struct vnode *vp, 319 int attrnamespace, const char *name, struct uio *uio); 320int mac_check_vnode_link(struct ucred *cred, struct vnode *dvp, 321 struct vnode *vp, struct componentname *cnp); 322int mac_check_vnode_lookup(struct ucred *cred, struct vnode *dvp, 323 struct componentname *cnp); 324int mac_check_vnode_mmap(struct ucred *cred, struct vnode *vp, 325 int prot); 326int mac_check_vnode_mprotect(struct ucred *cred, struct vnode *vp, 327 int prot); 328int mac_check_vnode_open(struct ucred *cred, struct vnode *vp, 329 mode_t acc_mode); 330int mac_check_vnode_poll(struct ucred *active_cred, 331 struct ucred *file_cred, struct vnode *vp); 332int mac_check_vnode_read(struct ucred *active_cred, 333 struct ucred *file_cred, struct vnode *vp); 334int mac_check_vnode_readdir(struct ucred *cred, struct vnode *vp); 335int mac_check_vnode_readlink(struct ucred *cred, struct vnode *vp); 336int mac_check_vnode_rename_from(struct ucred *cred, struct vnode *dvp, 337 struct vnode *vp, struct componentname *cnp); 338int mac_check_vnode_rename_to(struct ucred *cred, struct vnode *dvp, 339 struct vnode *vp, int samedir, struct componentname *cnp); 340int mac_check_vnode_revoke(struct ucred *cred, struct vnode *vp); 341int mac_check_vnode_setacl(struct ucred *cred, struct vnode *vp, 342 acl_type_t type, struct acl *acl); 343int mac_check_vnode_setextattr(struct ucred *cred, struct vnode *vp, 344 int attrnamespace, const char *name, struct uio *uio); 345int mac_check_vnode_setflags(struct ucred *cred, struct vnode *vp, 346 u_long flags); 347int mac_check_vnode_setmode(struct ucred *cred, struct vnode *vp, 348 mode_t mode); 349int mac_check_vnode_setowner(struct ucred *cred, struct vnode *vp, 350 uid_t uid, gid_t gid); 351int mac_check_vnode_setutimes(struct ucred *cred, struct vnode *vp, 352 struct timespec atime, struct timespec mtime); 353int mac_check_vnode_stat(struct ucred *active_cred, 354 struct ucred *file_cred, struct vnode *vp); 355int mac_check_vnode_write(struct ucred *active_cred, 356 struct ucred *file_cred, struct vnode *vp); 357int mac_getsockopt_label_get(struct ucred *cred, struct socket *so, 358 struct mac *extmac); 359int mac_getsockopt_peerlabel_get(struct ucred *cred, struct socket *so, 360 struct mac *extmac); 361int mac_ioctl_ifnet_get(struct ucred *cred, struct ifreq *ifr, 362 struct ifnet *ifnet); 363int mac_ioctl_ifnet_set(struct ucred *cred, struct ifreq *ifr, 364 struct ifnet *ifnet); 365int mac_setsockopt_label_set(struct ucred *cred, struct socket *so, 366 struct mac *extmac); 367int mac_pipe_label_set(struct ucred *cred, struct pipe *pipe, 368 struct label *label); 369 370/* 371 * Calls to help various file systems implement labeling functionality 372 * using their existing EA implementation. 373 */ 374int vop_stdsetlabel_ea(struct vop_setlabel_args *ap); 375 376#endif /* _KERNEL */ 377 378#endif /* !_SYS_MAC_H */ 379