mac_framework.h revision 106392
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/security/mac/mac_framework.h 106392 2002-11-04 01:42:39Z 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_free(mac_t _label); 88int mac_from_text(mac_t *_label, const char *_text); 89int mac_get_fd(int _fd, mac_t _label); 90int mac_get_file(const char *_path, mac_t _label); 91int mac_get_link(const char *_path, mac_t _label); 92int mac_get_pid(pid_t _pid, mac_t _label); 93int mac_get_proc(mac_t _label); 94int mac_is_present(const char *_policyname); 95int mac_prepare(mac_t *_label, char *_elements); 96int mac_prepare_file_label(mac_t *_label); 97int mac_prepare_ifnet_label(mac_t *_label); 98int mac_prepare_process_label(mac_t *_label); 99int mac_set_fd(int _fildes, const mac_t _label); 100int mac_set_file(const char *_path, mac_t _label); 101int mac_set_link(const char *_path, mac_t _label); 102int mac_set_proc(const mac_t _label); 103int mac_syscall(const char *_policyname, int _call, void *_arg); 104int mac_to_text(mac_t mac, char **_text); 105 106#else /* _KERNEL */ 107 108/* 109 * Kernel functions to manage and evaluate labels. 110 */ 111struct bpf_d; 112struct componentname; 113struct devfs_dirent; 114struct ifnet; 115struct ifreq; 116struct ipq; 117struct mbuf; 118struct mount; 119struct proc; 120struct sockaddr; 121struct socket; 122struct pipe; 123struct thread; 124struct timespec; 125struct ucred; 126struct uio; 127struct vattr; 128struct vnode; 129 130#include <sys/acl.h> /* XXX acl_type_t */ 131 132struct vop_refreshlabel_args; 133struct vop_setlabel_args; 134 135/* 136 * Label operations. 137 */ 138void mac_init_bpfdesc(struct bpf_d *); 139void mac_init_cred(struct ucred *); 140void mac_init_devfsdirent(struct devfs_dirent *); 141void mac_init_ifnet(struct ifnet *); 142void mac_init_ipq(struct ipq *); 143int mac_init_socket(struct socket *, int flag); 144void mac_init_pipe(struct pipe *); 145int mac_init_mbuf(struct mbuf *m, int flag); 146void mac_init_mount(struct mount *); 147void mac_init_vnode(struct vnode *); 148void mac_init_vnode_label(struct label *); 149void mac_copy_vnode_label(struct label *, struct label *label); 150void mac_destroy_bpfdesc(struct bpf_d *); 151void mac_destroy_cred(struct ucred *); 152void mac_destroy_devfsdirent(struct devfs_dirent *); 153void mac_destroy_ifnet(struct ifnet *); 154void mac_destroy_ipq(struct ipq *); 155void mac_destroy_socket(struct socket *); 156void mac_destroy_pipe(struct pipe *); 157void mac_destroy_mbuf(struct mbuf *); 158void mac_destroy_mount(struct mount *); 159void mac_destroy_vnode(struct vnode *); 160void mac_destroy_vnode_label(struct label *); 161 162/* 163 * Labeling event operations: file system objects, and things that 164 * look a lot like file system objects. 165 */ 166void mac_associate_vnode_devfs(struct mount *mp, struct devfs_dirent *de, 167 struct vnode *vp); 168int mac_associate_vnode_extattr(struct mount *mp, struct vnode *vp); 169void mac_associate_vnode_singlelabel(struct mount *mp, struct vnode *vp); 170void mac_create_devfs_device(dev_t dev, struct devfs_dirent *de); 171void mac_create_devfs_directory(char *dirname, int dirnamelen, 172 struct devfs_dirent *de); 173void mac_create_devfs_symlink(struct ucred *cred, struct devfs_dirent *dd, 174 struct devfs_dirent *de); 175void mac_create_devfs_vnode(struct devfs_dirent *de, struct vnode *vp); 176int mac_create_vnode_extattr(struct ucred *cred, struct mount *mp, 177 struct vnode *dvp, struct vnode *vp, struct componentname *cnp); 178void mac_create_mount(struct ucred *cred, struct mount *mp); 179void mac_create_root_mount(struct ucred *cred, struct mount *mp); 180void mac_relabel_vnode(struct ucred *cred, struct vnode *vp, 181 struct label *newlabel); 182void mac_update_devfsdirent(struct devfs_dirent *de, struct vnode *vp); 183 184/* 185 * Labeling event operations: IPC objects. 186 */ 187void mac_create_mbuf_from_socket(struct socket *so, struct mbuf *m); 188void mac_create_socket(struct ucred *cred, struct socket *socket); 189void mac_create_socket_from_socket(struct socket *oldsocket, 190 struct socket *newsocket); 191void mac_set_socket_peer_from_mbuf(struct mbuf *mbuf, 192 struct socket *socket); 193void mac_set_socket_peer_from_socket(struct socket *oldsocket, 194 struct socket *newsocket); 195void mac_create_pipe(struct ucred *cred, struct pipe *pipe); 196 197/* 198 * Labeling event operations: network objects. 199 */ 200void mac_create_bpfdesc(struct ucred *cred, struct bpf_d *bpf_d); 201void mac_create_ifnet(struct ifnet *ifp); 202void mac_create_ipq(struct mbuf *fragment, struct ipq *ipq); 203void mac_create_datagram_from_ipq(struct ipq *ipq, struct mbuf *datagram); 204void mac_create_fragment(struct mbuf *datagram, struct mbuf *fragment); 205void mac_create_mbuf_from_mbuf(struct mbuf *oldmbuf, struct mbuf *newmbuf); 206void mac_create_mbuf_linklayer(struct ifnet *ifnet, struct mbuf *m); 207void mac_create_mbuf_from_bpfdesc(struct bpf_d *bpf_d, struct mbuf *m); 208void mac_create_mbuf_from_ifnet(struct ifnet *ifnet, struct mbuf *m); 209void mac_create_mbuf_multicast_encap(struct mbuf *oldmbuf, 210 struct ifnet *ifnet, struct mbuf *newmbuf); 211void mac_create_mbuf_netlayer(struct mbuf *oldmbuf, struct mbuf *newmbuf); 212int mac_fragment_match(struct mbuf *fragment, struct ipq *ipq); 213void mac_update_ipq(struct mbuf *fragment, struct ipq *ipq); 214 215/* 216 * Labeling event operations: processes. 217 */ 218void mac_create_cred(struct ucred *cred_parent, struct ucred *cred_child); 219void mac_execve_transition(struct ucred *old, struct ucred *new, 220 struct vnode *vp); 221int mac_execve_will_transition(struct ucred *old, struct vnode *vp); 222void mac_create_proc0(struct ucred *cred); 223void mac_create_proc1(struct ucred *cred); 224void mac_thread_userret(struct thread *td); 225 226/* Access control checks. */ 227int mac_check_bpfdesc_receive(struct bpf_d *bpf_d, struct ifnet *ifnet); 228int mac_check_cred_visible(struct ucred *u1, struct ucred *u2); 229int mac_check_ifnet_transmit(struct ifnet *ifnet, struct mbuf *m); 230int mac_check_kenv_dump(struct ucred *cred); 231int mac_check_kenv_get(struct ucred *cred, char *name); 232int mac_check_kenv_set(struct ucred *cred, char *name, char *value); 233int mac_check_kenv_unset(struct ucred *cred, char *name); 234int mac_check_mount_stat(struct ucred *cred, struct mount *mp); 235int mac_check_pipe_ioctl(struct ucred *cred, struct pipe *pipe, 236 unsigned long cmd, void *data); 237int mac_check_pipe_poll(struct ucred *cred, struct pipe *pipe); 238int mac_check_pipe_read(struct ucred *cred, struct pipe *pipe); 239int mac_check_pipe_stat(struct ucred *cred, struct pipe *pipe); 240int mac_check_pipe_write(struct ucred *cred, struct pipe *pipe); 241int mac_check_proc_debug(struct ucred *cred, struct proc *proc); 242int mac_check_proc_sched(struct ucred *cred, struct proc *proc); 243int mac_check_proc_signal(struct ucred *cred, struct proc *proc, 244 int signum); 245int mac_check_socket_bind(struct ucred *cred, struct socket *so, 246 struct sockaddr *sockaddr); 247int mac_check_socket_connect(struct ucred *cred, struct socket *so, 248 struct sockaddr *sockaddr); 249int mac_check_socket_deliver(struct socket *so, struct mbuf *m); 250int mac_check_socket_listen(struct ucred *cred, struct socket *so); 251int mac_check_socket_receive(struct ucred *cred, struct socket *so); 252int mac_check_socket_send(struct ucred *cred, struct socket *so); 253int mac_check_socket_visible(struct ucred *cred, struct socket *so); 254int mac_check_system_reboot(struct ucred *cred, int howto); 255int mac_check_system_settime(struct ucred *cred); 256int mac_check_system_swapon(struct ucred *cred, struct vnode *vp); 257int mac_check_system_sysctl(struct ucred *cred, int *name, 258 u_int namelen, void *old, size_t *oldlenp, int inkernel, 259 void *new, size_t newlen); 260int mac_check_vnode_access(struct ucred *cred, struct vnode *vp, 261 int acc_mode); 262int mac_check_vnode_chdir(struct ucred *cred, struct vnode *dvp); 263int mac_check_vnode_chroot(struct ucred *cred, struct vnode *dvp); 264int mac_check_vnode_create(struct ucred *cred, struct vnode *dvp, 265 struct componentname *cnp, struct vattr *vap); 266int mac_check_vnode_delete(struct ucred *cred, struct vnode *dvp, 267 struct vnode *vp, struct componentname *cnp); 268int mac_check_vnode_deleteacl(struct ucred *cred, struct vnode *vp, 269 acl_type_t type); 270int mac_check_vnode_exec(struct ucred *cred, struct vnode *vp); 271int mac_check_vnode_getacl(struct ucred *cred, struct vnode *vp, 272 acl_type_t type); 273int mac_check_vnode_getextattr(struct ucred *cred, struct vnode *vp, 274 int attrnamespace, const char *name, struct uio *uio); 275int mac_check_vnode_link(struct ucred *cred, struct vnode *dvp, 276 struct vnode *vp, struct componentname *cnp); 277int mac_check_vnode_lookup(struct ucred *cred, struct vnode *dvp, 278 struct componentname *cnp); 279int mac_check_vnode_mmap(struct ucred *cred, struct vnode *vp, 280 int prot); 281int mac_check_vnode_mprotect(struct ucred *cred, struct vnode *vp, 282 int prot); 283int mac_check_vnode_open(struct ucred *cred, struct vnode *vp, 284 int acc_mode); 285int mac_check_vnode_poll(struct ucred *active_cred, 286 struct ucred *file_cred, struct vnode *vp); 287int mac_check_vnode_read(struct ucred *active_cred, 288 struct ucred *file_cred, struct vnode *vp); 289int mac_check_vnode_readdir(struct ucred *cred, struct vnode *vp); 290int mac_check_vnode_readlink(struct ucred *cred, struct vnode *vp); 291int mac_check_vnode_rename_from(struct ucred *cred, struct vnode *dvp, 292 struct vnode *vp, struct componentname *cnp); 293int mac_check_vnode_rename_to(struct ucred *cred, struct vnode *dvp, 294 struct vnode *vp, int samedir, struct componentname *cnp); 295int mac_check_vnode_revoke(struct ucred *cred, struct vnode *vp); 296int mac_check_vnode_setacl(struct ucred *cred, struct vnode *vp, 297 acl_type_t type, struct acl *acl); 298int mac_check_vnode_setextattr(struct ucred *cred, struct vnode *vp, 299 int attrnamespace, const char *name, struct uio *uio); 300int mac_check_vnode_setflags(struct ucred *cred, struct vnode *vp, 301 u_long flags); 302int mac_check_vnode_setmode(struct ucred *cred, struct vnode *vp, 303 mode_t mode); 304int mac_check_vnode_setowner(struct ucred *cred, struct vnode *vp, 305 uid_t uid, gid_t gid); 306int mac_check_vnode_setutimes(struct ucred *cred, struct vnode *vp, 307 struct timespec atime, struct timespec mtime); 308int mac_check_vnode_stat(struct ucred *active_cred, 309 struct ucred *file_cred, struct vnode *vp); 310int mac_check_vnode_write(struct ucred *active_cred, 311 struct ucred *file_cred, struct vnode *vp); 312int mac_getsockopt_label_get(struct ucred *cred, struct socket *so, 313 struct mac *extmac); 314int mac_getsockopt_peerlabel_get(struct ucred *cred, struct socket *so, 315 struct mac *extmac); 316int mac_ioctl_ifnet_get(struct ucred *cred, struct ifreq *ifr, 317 struct ifnet *ifnet); 318int mac_ioctl_ifnet_set(struct ucred *cred, struct ifreq *ifr, 319 struct ifnet *ifnet); 320int mac_setsockopt_label_set(struct ucred *cred, struct socket *so, 321 struct mac *extmac); 322int mac_pipe_label_set(struct ucred *cred, struct pipe *pipe, 323 struct label *label); 324 325/* 326 * Calls to help various file systems implement labeling functionality 327 * using their existing EA implementation. 328 */ 329int vop_stdsetlabel_ea(struct vop_setlabel_args *ap); 330 331#endif /* !_KERNEL */ 332 333#endif /* !_SYS_MAC_H */ 334