mac.h revision 107105
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 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: head/sys/sys/mac.h 107105 2002-11-20 15:41:25Z rwatson $ 35 */ 36/* 37 * Userland/kernel interface for Mandatory Access Control. 38 * 39 * The POSIX.1e implementation page may be reached at: 40 * http://www.trustedbsd.org/ 41 */ 42#ifndef _SYS_MAC_H 43#define _SYS_MAC_H 44 45#include <sys/_label.h> 46 47#ifndef _POSIX_MAC 48#define _POSIX_MAC 49#endif 50 51/* 52 * XXXMAC: The single MAC extended attribute will be deprecated once 53 * compound EA writes on a single target file can be performed cleanly 54 * with UFS2. 55 */ 56#define FREEBSD_MAC_EXTATTR_NAME "freebsd.mac" 57#define FREEBSD_MAC_EXTATTR_NAMESPACE EXTATTR_NAMESPACE_SYSTEM 58 59/* 60 * MAC framework-related constants and limits. 61 */ 62#define MAC_MAX_POLICY_NAME 32 63#define MAC_MAX_LABEL_ELEMENT_NAME 32 64#define MAC_MAX_LABEL_ELEMENT_DATA 4096 65#define MAC_MAX_LABEL_BUF_LEN 8192 66 67struct mac { 68 size_t m_buflen; 69 char *m_string; 70}; 71 72typedef struct mac *mac_t; 73 74#ifndef _KERNEL 75 76/* 77 * Location of the userland MAC framework configuration file. mac.conf 78 * binds policy names to shared libraries that understand those policies, 79 * as well as setting defaults for MAC-aware applications. 80 */ 81#define MAC_CONFFILE "/etc/mac.conf" 82 83/* 84 * Extended non-POSIX.1e interfaces that offer additional services 85 * available from the userland and kernel MAC frameworks. 86 */ 87int mac_execve(char *fname, char **argv, char **envv, 88 mac_t _label); 89int mac_free(mac_t _label); 90int mac_from_text(mac_t *_label, const char *_text); 91int mac_get_fd(int _fd, mac_t _label); 92int mac_get_file(const char *_path, mac_t _label); 93int mac_get_link(const char *_path, mac_t _label); 94int mac_get_pid(pid_t _pid, mac_t _label); 95int mac_get_proc(mac_t _label); 96int mac_is_present(const char *_policyname); 97int mac_prepare(mac_t *_label, char *_elements); 98int mac_prepare_file_label(mac_t *_label); 99int mac_prepare_ifnet_label(mac_t *_label); 100int mac_prepare_process_label(mac_t *_label); 101int mac_set_fd(int _fildes, const mac_t _label); 102int mac_set_file(const char *_path, mac_t _label); 103int mac_set_link(const char *_path, mac_t _label); 104int mac_set_proc(const mac_t _label); 105int mac_syscall(const char *_policyname, int _call, void *_arg); 106int mac_to_text(mac_t mac, char **_text); 107 108#else /* _KERNEL */ 109 110/* 111 * Kernel functions to manage and evaluate labels. 112 */ 113struct bpf_d; 114struct componentname; 115struct devfs_dirent; 116struct ifnet; 117struct ifreq; 118struct image_params; 119struct ipq; 120struct mbuf; 121struct mount; 122struct proc; 123struct sockaddr; 124struct socket; 125struct pipe; 126struct thread; 127struct timespec; 128struct ucred; 129struct uio; 130struct vattr; 131struct vnode; 132 133#include <sys/acl.h> /* XXX acl_type_t */ 134 135struct vop_setlabel_args; 136 137/* 138 * Label operations. 139 */ 140void mac_init_bpfdesc(struct bpf_d *); 141void mac_init_cred(struct ucred *); 142void mac_init_devfsdirent(struct devfs_dirent *); 143void mac_init_ifnet(struct ifnet *); 144void mac_init_ipq(struct ipq *); 145int mac_init_socket(struct socket *, int flag); 146void mac_init_pipe(struct pipe *); 147int mac_init_mbuf(struct mbuf *m, int flag); 148void mac_init_mount(struct mount *); 149void mac_init_proc(struct proc *); 150void mac_init_vnode(struct vnode *); 151void mac_init_vnode_label(struct label *); 152void mac_copy_vnode_label(struct label *, struct label *label); 153void mac_destroy_bpfdesc(struct bpf_d *); 154void mac_destroy_cred(struct ucred *); 155void mac_destroy_devfsdirent(struct devfs_dirent *); 156void mac_destroy_ifnet(struct ifnet *); 157void mac_destroy_ipq(struct ipq *); 158void mac_destroy_socket(struct socket *); 159void mac_destroy_pipe(struct pipe *); 160void mac_destroy_proc(struct proc *); 161void mac_destroy_mbuf(struct mbuf *); 162void mac_destroy_mount(struct mount *); 163void mac_destroy_vnode(struct vnode *); 164void mac_destroy_vnode_label(struct label *); 165 166/* 167 * Labeling event operations: file system objects, and things that 168 * look a lot like file system objects. 169 */ 170void mac_associate_vnode_devfs(struct mount *mp, struct devfs_dirent *de, 171 struct vnode *vp); 172int mac_associate_vnode_extattr(struct mount *mp, struct vnode *vp); 173void mac_associate_vnode_singlelabel(struct mount *mp, struct vnode *vp); 174void mac_create_devfs_device(dev_t dev, struct devfs_dirent *de); 175void mac_create_devfs_directory(char *dirname, int dirnamelen, 176 struct devfs_dirent *de); 177void mac_create_devfs_symlink(struct ucred *cred, struct devfs_dirent *dd, 178 struct devfs_dirent *de); 179int mac_create_vnode_extattr(struct ucred *cred, struct mount *mp, 180 struct vnode *dvp, struct vnode *vp, struct componentname *cnp); 181void mac_create_mount(struct ucred *cred, struct mount *mp); 182void mac_create_root_mount(struct ucred *cred, struct mount *mp); 183void mac_relabel_vnode(struct ucred *cred, struct vnode *vp, 184 struct label *newlabel); 185void mac_update_devfsdirent(struct devfs_dirent *de, struct vnode *vp); 186 187/* 188 * Labeling event operations: IPC objects. 189 */ 190void mac_create_mbuf_from_socket(struct socket *so, struct mbuf *m); 191void mac_create_socket(struct ucred *cred, struct socket *socket); 192void mac_create_socket_from_socket(struct socket *oldsocket, 193 struct socket *newsocket); 194void mac_set_socket_peer_from_mbuf(struct mbuf *mbuf, 195 struct socket *socket); 196void mac_set_socket_peer_from_socket(struct socket *oldsocket, 197 struct socket *newsocket); 198void mac_create_pipe(struct ucred *cred, struct pipe *pipe); 199 200/* 201 * Labeling event operations: network objects. 202 */ 203void mac_create_bpfdesc(struct ucred *cred, struct bpf_d *bpf_d); 204void mac_create_ifnet(struct ifnet *ifp); 205void mac_create_ipq(struct mbuf *fragment, struct ipq *ipq); 206void mac_create_datagram_from_ipq(struct ipq *ipq, struct mbuf *datagram); 207void mac_create_fragment(struct mbuf *datagram, struct mbuf *fragment); 208void mac_create_mbuf_from_mbuf(struct mbuf *oldmbuf, struct mbuf *newmbuf); 209void mac_create_mbuf_linklayer(struct ifnet *ifnet, struct mbuf *m); 210void mac_create_mbuf_from_bpfdesc(struct bpf_d *bpf_d, struct mbuf *m); 211void mac_create_mbuf_from_ifnet(struct ifnet *ifnet, struct mbuf *m); 212void mac_create_mbuf_multicast_encap(struct mbuf *oldmbuf, 213 struct ifnet *ifnet, struct mbuf *newmbuf); 214void mac_create_mbuf_netlayer(struct mbuf *oldmbuf, struct mbuf *newmbuf); 215int mac_fragment_match(struct mbuf *fragment, struct ipq *ipq); 216void mac_update_ipq(struct mbuf *fragment, struct ipq *ipq); 217 218/* 219 * Labeling event operations: processes. 220 */ 221void mac_create_cred(struct ucred *cred_parent, struct ucred *cred_child); 222int mac_execve_enter(struct image_params *imgp, struct mac *mac_p, 223 struct label *execlabel); 224void mac_execve_exit(struct image_params *imgp); 225void mac_execve_transition(struct ucred *old, struct ucred *new, 226 struct vnode *vp, struct label *interpvnodelabel, 227 struct image_params *imgp); 228int mac_execve_will_transition(struct ucred *old, struct vnode *vp, 229 struct label *interpvnodelabel, struct image_params *imgp); 230void mac_create_proc0(struct ucred *cred); 231void mac_create_proc1(struct ucred *cred); 232void mac_thread_userret(struct thread *td); 233 234/* Access control checks. */ 235int mac_check_bpfdesc_receive(struct bpf_d *bpf_d, struct ifnet *ifnet); 236int mac_check_cred_visible(struct ucred *u1, struct ucred *u2); 237int mac_check_ifnet_transmit(struct ifnet *ifnet, struct mbuf *m); 238int mac_check_kenv_dump(struct ucred *cred); 239int mac_check_kenv_get(struct ucred *cred, char *name); 240int mac_check_kenv_set(struct ucred *cred, char *name, char *value); 241int mac_check_kenv_unset(struct ucred *cred, char *name); 242int mac_check_kld_load(struct ucred *cred, struct vnode *vp); 243int mac_check_kld_stat(struct ucred *cred); 244int mac_check_kld_unload(struct ucred *cred); 245int mac_check_mount_stat(struct ucred *cred, struct mount *mp); 246int mac_check_pipe_ioctl(struct ucred *cred, struct pipe *pipe, 247 unsigned long cmd, void *data); 248int mac_check_pipe_poll(struct ucred *cred, struct pipe *pipe); 249int mac_check_pipe_read(struct ucred *cred, struct pipe *pipe); 250int mac_check_pipe_stat(struct ucred *cred, struct pipe *pipe); 251int mac_check_pipe_write(struct ucred *cred, struct pipe *pipe); 252int mac_check_proc_debug(struct ucred *cred, struct proc *proc); 253int mac_check_proc_sched(struct ucred *cred, struct proc *proc); 254int mac_check_proc_signal(struct ucred *cred, struct proc *proc, 255 int signum); 256int mac_check_socket_bind(struct ucred *cred, struct socket *so, 257 struct sockaddr *sockaddr); 258int mac_check_socket_connect(struct ucred *cred, struct socket *so, 259 struct sockaddr *sockaddr); 260int mac_check_socket_deliver(struct socket *so, struct mbuf *m); 261int mac_check_socket_listen(struct ucred *cred, struct socket *so); 262int mac_check_socket_receive(struct ucred *cred, struct socket *so); 263int mac_check_socket_send(struct ucred *cred, struct socket *so); 264int mac_check_socket_visible(struct ucred *cred, struct socket *so); 265int mac_check_system_acct(struct ucred *cred, struct vnode *vp); 266int mac_check_system_nfsd(struct ucred *cred); 267int mac_check_system_reboot(struct ucred *cred, int howto); 268int mac_check_system_settime(struct ucred *cred); 269int mac_check_system_swapon(struct ucred *cred, struct vnode *vp); 270int mac_check_system_sysctl(struct ucred *cred, int *name, 271 u_int namelen, void *old, size_t *oldlenp, int inkernel, 272 void *new, size_t newlen); 273int mac_check_vnode_access(struct ucred *cred, struct vnode *vp, 274 int acc_mode); 275int mac_check_vnode_chdir(struct ucred *cred, struct vnode *dvp); 276int mac_check_vnode_chroot(struct ucred *cred, struct vnode *dvp); 277int mac_check_vnode_create(struct ucred *cred, struct vnode *dvp, 278 struct componentname *cnp, struct vattr *vap); 279int mac_check_vnode_delete(struct ucred *cred, struct vnode *dvp, 280 struct vnode *vp, struct componentname *cnp); 281int mac_check_vnode_deleteacl(struct ucred *cred, struct vnode *vp, 282 acl_type_t type); 283int mac_check_vnode_exec(struct ucred *cred, struct vnode *vp, 284 struct image_params *imgp); 285int mac_check_vnode_getacl(struct ucred *cred, struct vnode *vp, 286 acl_type_t type); 287int mac_check_vnode_getextattr(struct ucred *cred, struct vnode *vp, 288 int attrnamespace, const char *name, struct uio *uio); 289int mac_check_vnode_link(struct ucred *cred, struct vnode *dvp, 290 struct vnode *vp, struct componentname *cnp); 291int mac_check_vnode_lookup(struct ucred *cred, struct vnode *dvp, 292 struct componentname *cnp); 293int mac_check_vnode_mmap(struct ucred *cred, struct vnode *vp, 294 int prot); 295int mac_check_vnode_mprotect(struct ucred *cred, struct vnode *vp, 296 int prot); 297int mac_check_vnode_open(struct ucred *cred, struct vnode *vp, 298 int acc_mode); 299int mac_check_vnode_poll(struct ucred *active_cred, 300 struct ucred *file_cred, struct vnode *vp); 301int mac_check_vnode_read(struct ucred *active_cred, 302 struct ucred *file_cred, struct vnode *vp); 303int mac_check_vnode_readdir(struct ucred *cred, struct vnode *vp); 304int mac_check_vnode_readlink(struct ucred *cred, struct vnode *vp); 305int mac_check_vnode_rename_from(struct ucred *cred, struct vnode *dvp, 306 struct vnode *vp, struct componentname *cnp); 307int mac_check_vnode_rename_to(struct ucred *cred, struct vnode *dvp, 308 struct vnode *vp, int samedir, struct componentname *cnp); 309int mac_check_vnode_revoke(struct ucred *cred, struct vnode *vp); 310int mac_check_vnode_setacl(struct ucred *cred, struct vnode *vp, 311 acl_type_t type, struct acl *acl); 312int mac_check_vnode_setextattr(struct ucred *cred, struct vnode *vp, 313 int attrnamespace, const char *name, struct uio *uio); 314int mac_check_vnode_setflags(struct ucred *cred, struct vnode *vp, 315 u_long flags); 316int mac_check_vnode_setmode(struct ucred *cred, struct vnode *vp, 317 mode_t mode); 318int mac_check_vnode_setowner(struct ucred *cred, struct vnode *vp, 319 uid_t uid, gid_t gid); 320int mac_check_vnode_setutimes(struct ucred *cred, struct vnode *vp, 321 struct timespec atime, struct timespec mtime); 322int mac_check_vnode_stat(struct ucred *active_cred, 323 struct ucred *file_cred, struct vnode *vp); 324int mac_check_vnode_write(struct ucred *active_cred, 325 struct ucred *file_cred, struct vnode *vp); 326int mac_getsockopt_label_get(struct ucred *cred, struct socket *so, 327 struct mac *extmac); 328int mac_getsockopt_peerlabel_get(struct ucred *cred, struct socket *so, 329 struct mac *extmac); 330int mac_ioctl_ifnet_get(struct ucred *cred, struct ifreq *ifr, 331 struct ifnet *ifnet); 332int mac_ioctl_ifnet_set(struct ucred *cred, struct ifreq *ifr, 333 struct ifnet *ifnet); 334int mac_setsockopt_label_set(struct ucred *cred, struct socket *so, 335 struct mac *extmac); 336int mac_pipe_label_set(struct ucred *cred, struct pipe *pipe, 337 struct label *label); 338 339/* 340 * Calls to help various file systems implement labeling functionality 341 * using their existing EA implementation. 342 */ 343int vop_stdsetlabel_ea(struct vop_setlabel_args *ap); 344 345#endif /* !_KERNEL */ 346 347#endif /* !_SYS_MAC_H */ 348