mac.h revision 126097
1/*- 2 * Copyright (c) 1999-2002 Robert N. M. Watson 3 * Copyright (c) 2001-2003 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 126097 2004-02-22 00:33:12Z 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 * MAC framework-related constants and limits. 53 */ 54#define MAC_MAX_POLICY_NAME 32 55#define MAC_MAX_LABEL_ELEMENT_NAME 32 56#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 componentname; 110struct devfs_dirent; 111struct ifnet; 112struct ifreq; 113struct inpcb; 114struct image_params; 115struct inpcb; 116struct ipq; 117struct m_tag; 118struct mbuf; 119struct mount; 120struct proc; 121struct sockaddr; 122struct socket; 123struct pipepair; 124struct thread; 125struct timespec; 126struct ucred; 127struct uio; 128struct vattr; 129struct vnode; 130 131#include <sys/acl.h> /* XXX acl_type_t */ 132 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 *); 142int mac_init_inpcb(struct inpcb *, int flag); 143int mac_init_ipq(struct ipq *, int flag); 144int mac_init_socket(struct socket *, int flag); 145void mac_init_pipe(struct pipepair *); 146int mac_init_mbuf(struct mbuf *mbuf, int flag); 147int mac_init_mbuf_tag(struct m_tag *, int flag); 148void mac_init_mount(struct mount *); 149void mac_init_proc(struct proc *); 150void mac_init_vnode(struct vnode *); 151void mac_copy_mbuf_tag(struct m_tag *, struct m_tag *); 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_inpcb(struct inpcb *); 158void mac_destroy_ipq(struct ipq *); 159void mac_destroy_socket(struct socket *); 160void mac_destroy_pipe(struct pipepair *); 161void mac_destroy_proc(struct proc *); 162void mac_destroy_mbuf_tag(struct m_tag *); 163void mac_destroy_mount(struct mount *); 164void mac_destroy_vnode(struct vnode *); 165 166struct label *mac_cred_label_alloc(void); 167void mac_cred_label_free(struct label *label); 168struct label *mac_vnode_label_alloc(void); 169void mac_vnode_label_free(struct label *label); 170 171/* 172 * Labeling event operations: file system objects, and things that 173 * look a lot like file system objects. 174 */ 175void mac_associate_vnode_devfs(struct mount *mp, struct devfs_dirent *de, 176 struct vnode *vp); 177int mac_associate_vnode_extattr(struct mount *mp, struct vnode *vp); 178void mac_associate_vnode_singlelabel(struct mount *mp, struct vnode *vp); 179void mac_create_devfs_device(struct mount *mp, dev_t dev, 180 struct devfs_dirent *de); 181void mac_create_devfs_directory(struct mount *mp, char *dirname, 182 int dirnamelen, struct devfs_dirent *de); 183void mac_create_devfs_symlink(struct ucred *cred, struct mount *mp, 184 struct devfs_dirent *dd, struct devfs_dirent *de); 185int mac_create_vnode_extattr(struct ucred *cred, struct mount *mp, 186 struct vnode *dvp, struct vnode *vp, struct componentname *cnp); 187void mac_create_mount(struct ucred *cred, struct mount *mp); 188void mac_create_root_mount(struct ucred *cred, struct mount *mp); 189void mac_relabel_vnode(struct ucred *cred, struct vnode *vp, 190 struct label *newlabel); 191void mac_update_devfsdirent(struct mount *mp, struct devfs_dirent *de, 192 struct vnode *vp); 193 194/* 195 * Labeling event operations: IPC objects. 196 */ 197void mac_create_mbuf_from_socket(struct socket *so, struct mbuf *m); 198void mac_create_socket(struct ucred *cred, struct socket *socket); 199void mac_create_socket_from_socket(struct socket *oldsocket, 200 struct socket *newsocket); 201void mac_set_socket_peer_from_mbuf(struct mbuf *mbuf, 202 struct socket *socket); 203void mac_set_socket_peer_from_socket(struct socket *oldsocket, 204 struct socket *newsocket); 205void mac_create_pipe(struct ucred *cred, struct pipepair *pp); 206 207/* 208 * Labeling event operations: network objects. 209 */ 210void mac_create_bpfdesc(struct ucred *cred, struct bpf_d *bpf_d); 211void mac_create_ifnet(struct ifnet *ifp); 212void mac_create_inpcb_from_socket(struct socket *so, struct inpcb *inp); 213void mac_create_ipq(struct mbuf *fragment, struct ipq *ipq); 214void mac_create_datagram_from_ipq(struct ipq *ipq, struct mbuf *datagram); 215void mac_create_fragment(struct mbuf *datagram, struct mbuf *fragment); 216void mac_create_mbuf_from_inpcb(struct inpcb *inp, struct mbuf *m); 217void mac_create_mbuf_from_mbuf(struct mbuf *oldmbuf, struct mbuf *newmbuf); 218void mac_create_mbuf_linklayer(struct ifnet *ifnet, struct mbuf *m); 219void mac_create_mbuf_from_bpfdesc(struct bpf_d *bpf_d, struct mbuf *m); 220void mac_create_mbuf_from_ifnet(struct ifnet *ifnet, struct mbuf *m); 221void mac_create_mbuf_multicast_encap(struct mbuf *oldmbuf, 222 struct ifnet *ifnet, struct mbuf *newmbuf); 223void mac_create_mbuf_netlayer(struct mbuf *oldmbuf, struct mbuf *newmbuf); 224int mac_fragment_match(struct mbuf *fragment, struct ipq *ipq); 225void mac_reflect_mbuf_icmp(struct mbuf *m); 226void mac_reflect_mbuf_tcp(struct mbuf *m); 227void mac_update_ipq(struct mbuf *fragment, struct ipq *ipq); 228void mac_inpcb_sosetlabel(struct socket *so, struct inpcb *inp); 229 230/* 231 * Labeling event operations: processes. 232 */ 233void mac_copy_cred(struct ucred *cr1, struct ucred *cr2); 234int mac_execve_enter(struct image_params *imgp, struct mac *mac_p); 235void mac_execve_exit(struct image_params *imgp); 236void mac_execve_transition(struct ucred *old, struct ucred *new, 237 struct vnode *vp, struct label *interpvnodelabel, 238 struct image_params *imgp); 239int mac_execve_will_transition(struct ucred *old, struct vnode *vp, 240 struct label *interpvnodelabel, struct image_params *imgp); 241void mac_create_proc0(struct ucred *cred); 242void mac_create_proc1(struct ucred *cred); 243void mac_thread_userret(struct thread *td); 244 245/* Access control checks. */ 246int mac_check_bpfdesc_receive(struct bpf_d *bpf_d, struct ifnet *ifnet); 247int mac_check_cred_visible(struct ucred *u1, struct ucred *u2); 248int mac_check_ifnet_transmit(struct ifnet *ifnet, struct mbuf *m); 249int mac_check_inpcb_deliver(struct inpcb *inp, struct mbuf *m); 250int mac_check_kenv_dump(struct ucred *cred); 251int mac_check_kenv_get(struct ucred *cred, char *name); 252int mac_check_kenv_set(struct ucred *cred, char *name, char *value); 253int mac_check_kenv_unset(struct ucred *cred, char *name); 254int mac_check_kld_load(struct ucred *cred, struct vnode *vp); 255int mac_check_kld_stat(struct ucred *cred); 256int mac_check_kld_unload(struct ucred *cred); 257int mac_check_mount_stat(struct ucred *cred, struct mount *mp); 258int mac_check_pipe_ioctl(struct ucred *cred, struct pipepair *pp, 259 unsigned long cmd, void *data); 260int mac_check_pipe_poll(struct ucred *cred, struct pipepair *pp); 261int mac_check_pipe_read(struct ucred *cred, struct pipepair *pp); 262int mac_check_pipe_stat(struct ucred *cred, struct pipepair *pp); 263int mac_check_pipe_write(struct ucred *cred, struct pipepair *pp); 264int mac_check_proc_debug(struct ucred *cred, struct proc *proc); 265int mac_check_proc_sched(struct ucred *cred, struct proc *proc); 266int mac_check_proc_signal(struct ucred *cred, struct proc *proc, 267 int signum); 268int mac_check_socket_bind(struct ucred *cred, struct socket *so, 269 struct sockaddr *sockaddr); 270int mac_check_socket_connect(struct ucred *cred, struct socket *so, 271 struct sockaddr *sockaddr); 272int mac_check_socket_deliver(struct socket *so, struct mbuf *m); 273int mac_check_socket_listen(struct ucred *cred, struct socket *so); 274int mac_check_socket_receive(struct ucred *cred, struct socket *so); 275int mac_check_socket_send(struct ucred *cred, struct socket *so); 276int mac_check_socket_visible(struct ucred *cred, struct socket *so); 277int mac_check_sysarch_ioperm(struct ucred *cred); 278int mac_check_system_acct(struct ucred *cred, struct vnode *vp); 279int mac_check_system_nfsd(struct ucred *cred); 280int mac_check_system_reboot(struct ucred *cred, int howto); 281int mac_check_system_settime(struct ucred *cred); 282int mac_check_system_swapon(struct ucred *cred, struct vnode *vp); 283int mac_check_system_swapoff(struct ucred *cred, struct vnode *vp); 284int mac_check_system_sysctl(struct ucred *cred, int *name, 285 u_int namelen, void *old, size_t *oldlenp, int inkernel, 286 void *new, size_t newlen); 287int mac_check_vnode_access(struct ucred *cred, struct vnode *vp, 288 int acc_mode); 289int mac_check_vnode_chdir(struct ucred *cred, struct vnode *dvp); 290int mac_check_vnode_chroot(struct ucred *cred, struct vnode *dvp); 291int mac_check_vnode_create(struct ucred *cred, struct vnode *dvp, 292 struct componentname *cnp, struct vattr *vap); 293int mac_check_vnode_delete(struct ucred *cred, struct vnode *dvp, 294 struct vnode *vp, struct componentname *cnp); 295int mac_check_vnode_deleteacl(struct ucred *cred, struct vnode *vp, 296 acl_type_t type); 297int mac_check_vnode_deleteextattr(struct ucred *cred, struct vnode *vp, 298 int attrnamespace, const char *name); 299int mac_check_vnode_exec(struct ucred *cred, struct vnode *vp, 300 struct image_params *imgp); 301int mac_check_vnode_getacl(struct ucred *cred, struct vnode *vp, 302 acl_type_t type); 303int mac_check_vnode_getextattr(struct ucred *cred, struct vnode *vp, 304 int attrnamespace, const char *name, struct uio *uio); 305int mac_check_vnode_link(struct ucred *cred, struct vnode *dvp, 306 struct vnode *vp, struct componentname *cnp); 307int mac_check_vnode_listextattr(struct ucred *cred, struct vnode *vp, 308 int attrnamespace); 309int mac_check_vnode_lookup(struct ucred *cred, struct vnode *dvp, 310 struct componentname *cnp); 311int mac_check_vnode_mmap(struct ucred *cred, struct vnode *vp, 312 int prot); 313int mac_check_vnode_mprotect(struct ucred *cred, struct vnode *vp, 314 int prot); 315int mac_check_vnode_open(struct ucred *cred, struct vnode *vp, 316 int acc_mode); 317int mac_check_vnode_poll(struct ucred *active_cred, 318 struct ucred *file_cred, struct vnode *vp); 319int mac_check_vnode_read(struct ucred *active_cred, 320 struct ucred *file_cred, struct vnode *vp); 321int mac_check_vnode_readdir(struct ucred *cred, struct vnode *vp); 322int mac_check_vnode_readlink(struct ucred *cred, struct vnode *vp); 323int mac_check_vnode_rename_from(struct ucred *cred, struct vnode *dvp, 324 struct vnode *vp, struct componentname *cnp); 325int mac_check_vnode_rename_to(struct ucred *cred, struct vnode *dvp, 326 struct vnode *vp, int samedir, struct componentname *cnp); 327int mac_check_vnode_revoke(struct ucred *cred, struct vnode *vp); 328int mac_check_vnode_setacl(struct ucred *cred, struct vnode *vp, 329 acl_type_t type, struct acl *acl); 330int mac_check_vnode_setextattr(struct ucred *cred, struct vnode *vp, 331 int attrnamespace, const char *name, struct uio *uio); 332int mac_check_vnode_setflags(struct ucred *cred, struct vnode *vp, 333 u_long flags); 334int mac_check_vnode_setmode(struct ucred *cred, struct vnode *vp, 335 mode_t mode); 336int mac_check_vnode_setowner(struct ucred *cred, struct vnode *vp, 337 uid_t uid, gid_t gid); 338int mac_check_vnode_setutimes(struct ucred *cred, struct vnode *vp, 339 struct timespec atime, struct timespec mtime); 340int mac_check_vnode_stat(struct ucred *active_cred, 341 struct ucred *file_cred, struct vnode *vp); 342int mac_check_vnode_write(struct ucred *active_cred, 343 struct ucred *file_cred, struct vnode *vp); 344int mac_getsockopt_label(struct ucred *cred, struct socket *so, 345 struct mac *extmac); 346int mac_getsockopt_peerlabel(struct ucred *cred, struct socket *so, 347 struct mac *extmac); 348int mac_ioctl_ifnet_get(struct ucred *cred, struct ifreq *ifr, 349 struct ifnet *ifnet); 350int mac_ioctl_ifnet_set(struct ucred *cred, struct ifreq *ifr, 351 struct ifnet *ifnet); 352int mac_setsockopt_label(struct ucred *cred, struct socket *so, 353 struct mac *extmac); 354int mac_pipe_label_set(struct ucred *cred, struct pipepair *pp, 355 struct label *label); 356void mac_cred_mmapped_drop_perms(struct thread *td, struct ucred *cred); 357 358/* 359 * Calls to help various file systems implement labeling functionality 360 * using their existing EA implementation. 361 */ 362int vop_stdsetlabel_ea(struct vop_setlabel_args *ap); 363 364#endif /* !_KERNEL */ 365 366#endif /* !_SYS_MAC_H */ 367