mac_framework.h revision 126121
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/security/mac/mac_framework.h 126121 2004-02-22 12:31:44Z pjd $ 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 sysctl_oid; 124struct sysctl_req; 125struct pipepair; 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 *); 144int mac_init_inpcb(struct inpcb *, int flag); 145int mac_init_ipq(struct ipq *, int flag); 146int mac_init_socket(struct socket *, int flag); 147void mac_init_pipe(struct pipepair *); 148int mac_init_mbuf(struct mbuf *mbuf, int flag); 149int mac_init_mbuf_tag(struct m_tag *, int flag); 150void mac_init_mount(struct mount *); 151void mac_init_proc(struct proc *); 152void mac_init_vnode(struct vnode *); 153void mac_copy_mbuf_tag(struct m_tag *, struct m_tag *); 154void mac_copy_vnode_label(struct label *, struct label *label); 155void mac_destroy_bpfdesc(struct bpf_d *); 156void mac_destroy_cred(struct ucred *); 157void mac_destroy_devfsdirent(struct devfs_dirent *); 158void mac_destroy_ifnet(struct ifnet *); 159void mac_destroy_inpcb(struct inpcb *); 160void mac_destroy_ipq(struct ipq *); 161void mac_destroy_socket(struct socket *); 162void mac_destroy_pipe(struct pipepair *); 163void mac_destroy_proc(struct proc *); 164void mac_destroy_mbuf_tag(struct m_tag *); 165void mac_destroy_mount(struct mount *); 166void mac_destroy_vnode(struct vnode *); 167 168struct label *mac_cred_label_alloc(void); 169void mac_cred_label_free(struct label *label); 170struct label *mac_vnode_label_alloc(void); 171void mac_vnode_label_free(struct label *label); 172 173/* 174 * Labeling event operations: file system objects, and things that 175 * look a lot like file system objects. 176 */ 177void mac_associate_vnode_devfs(struct mount *mp, struct devfs_dirent *de, 178 struct vnode *vp); 179int mac_associate_vnode_extattr(struct mount *mp, struct vnode *vp); 180void mac_associate_vnode_singlelabel(struct mount *mp, struct vnode *vp); 181void mac_create_devfs_device(struct mount *mp, dev_t dev, 182 struct devfs_dirent *de); 183void mac_create_devfs_directory(struct mount *mp, char *dirname, 184 int dirnamelen, struct devfs_dirent *de); 185void mac_create_devfs_symlink(struct ucred *cred, struct mount *mp, 186 struct devfs_dirent *dd, struct devfs_dirent *de); 187int mac_create_vnode_extattr(struct ucred *cred, struct mount *mp, 188 struct vnode *dvp, struct vnode *vp, struct componentname *cnp); 189void mac_create_mount(struct ucred *cred, struct mount *mp); 190void mac_create_root_mount(struct ucred *cred, struct mount *mp); 191void mac_relabel_vnode(struct ucred *cred, struct vnode *vp, 192 struct label *newlabel); 193void mac_update_devfsdirent(struct mount *mp, struct devfs_dirent *de, 194 struct vnode *vp); 195 196/* 197 * Labeling event operations: IPC objects. 198 */ 199void mac_create_mbuf_from_socket(struct socket *so, struct mbuf *m); 200void mac_create_socket(struct ucred *cred, struct socket *socket); 201void mac_create_socket_from_socket(struct socket *oldsocket, 202 struct socket *newsocket); 203void mac_set_socket_peer_from_mbuf(struct mbuf *mbuf, 204 struct socket *socket); 205void mac_set_socket_peer_from_socket(struct socket *oldsocket, 206 struct socket *newsocket); 207void mac_create_pipe(struct ucred *cred, struct pipepair *pp); 208 209/* 210 * Labeling event operations: network objects. 211 */ 212void mac_create_bpfdesc(struct ucred *cred, struct bpf_d *bpf_d); 213void mac_create_ifnet(struct ifnet *ifp); 214void mac_create_inpcb_from_socket(struct socket *so, struct inpcb *inp); 215void mac_create_ipq(struct mbuf *fragment, struct ipq *ipq); 216void mac_create_datagram_from_ipq(struct ipq *ipq, struct mbuf *datagram); 217void mac_create_fragment(struct mbuf *datagram, struct mbuf *fragment); 218void mac_create_mbuf_from_inpcb(struct inpcb *inp, struct mbuf *m); 219void mac_create_mbuf_from_mbuf(struct mbuf *oldmbuf, struct mbuf *newmbuf); 220void mac_create_mbuf_linklayer(struct ifnet *ifnet, struct mbuf *m); 221void mac_create_mbuf_from_bpfdesc(struct bpf_d *bpf_d, struct mbuf *m); 222void mac_create_mbuf_from_ifnet(struct ifnet *ifnet, struct mbuf *m); 223void mac_create_mbuf_multicast_encap(struct mbuf *oldmbuf, 224 struct ifnet *ifnet, struct mbuf *newmbuf); 225void mac_create_mbuf_netlayer(struct mbuf *oldmbuf, struct mbuf *newmbuf); 226int mac_fragment_match(struct mbuf *fragment, struct ipq *ipq); 227void mac_reflect_mbuf_icmp(struct mbuf *m); 228void mac_reflect_mbuf_tcp(struct mbuf *m); 229void mac_update_ipq(struct mbuf *fragment, struct ipq *ipq); 230void mac_inpcb_sosetlabel(struct socket *so, struct inpcb *inp); 231 232/* 233 * Labeling event operations: processes. 234 */ 235void mac_copy_cred(struct ucred *cr1, struct ucred *cr2); 236int mac_execve_enter(struct image_params *imgp, struct mac *mac_p); 237void mac_execve_exit(struct image_params *imgp); 238void mac_execve_transition(struct ucred *old, struct ucred *new, 239 struct vnode *vp, struct label *interpvnodelabel, 240 struct image_params *imgp); 241int mac_execve_will_transition(struct ucred *old, struct vnode *vp, 242 struct label *interpvnodelabel, struct image_params *imgp); 243void mac_create_proc0(struct ucred *cred); 244void mac_create_proc1(struct ucred *cred); 245void mac_thread_userret(struct thread *td); 246 247/* Access control checks. */ 248int mac_check_bpfdesc_receive(struct bpf_d *bpf_d, struct ifnet *ifnet); 249int mac_check_cred_visible(struct ucred *u1, struct ucred *u2); 250int mac_check_ifnet_transmit(struct ifnet *ifnet, struct mbuf *m); 251int mac_check_inpcb_deliver(struct inpcb *inp, struct mbuf *m); 252int mac_check_kenv_dump(struct ucred *cred); 253int mac_check_kenv_get(struct ucred *cred, char *name); 254int mac_check_kenv_set(struct ucred *cred, char *name, char *value); 255int mac_check_kenv_unset(struct ucred *cred, char *name); 256int mac_check_kld_load(struct ucred *cred, struct vnode *vp); 257int mac_check_kld_stat(struct ucred *cred); 258int mac_check_kld_unload(struct ucred *cred); 259int mac_check_mount_stat(struct ucred *cred, struct mount *mp); 260int mac_check_pipe_ioctl(struct ucred *cred, struct pipepair *pp, 261 unsigned long cmd, void *data); 262int mac_check_pipe_poll(struct ucred *cred, struct pipepair *pp); 263int mac_check_pipe_read(struct ucred *cred, struct pipepair *pp); 264int mac_check_pipe_stat(struct ucred *cred, struct pipepair *pp); 265int mac_check_pipe_write(struct ucred *cred, struct pipepair *pp); 266int mac_check_proc_debug(struct ucred *cred, struct proc *proc); 267int mac_check_proc_sched(struct ucred *cred, struct proc *proc); 268int mac_check_proc_signal(struct ucred *cred, struct proc *proc, 269 int signum); 270int mac_check_socket_bind(struct ucred *cred, struct socket *so, 271 struct sockaddr *sockaddr); 272int mac_check_socket_connect(struct ucred *cred, struct socket *so, 273 struct sockaddr *sockaddr); 274int mac_check_socket_deliver(struct socket *so, struct mbuf *m); 275int mac_check_socket_listen(struct ucred *cred, struct socket *so); 276int mac_check_socket_receive(struct ucred *cred, struct socket *so); 277int mac_check_socket_send(struct ucred *cred, struct socket *so); 278int mac_check_socket_visible(struct ucred *cred, struct socket *so); 279int mac_check_sysarch_ioperm(struct ucred *cred); 280int mac_check_system_acct(struct ucred *cred, struct vnode *vp); 281int mac_check_system_nfsd(struct ucred *cred); 282int mac_check_system_reboot(struct ucred *cred, int howto); 283int mac_check_system_settime(struct ucred *cred); 284int mac_check_system_swapon(struct ucred *cred, struct vnode *vp); 285int mac_check_system_swapoff(struct ucred *cred, struct vnode *vp); 286int mac_check_system_sysctl(struct ucred *cred, struct sysctl_oid *oidp, 287 void *arg1, int arg2, struct sysctl_req *req); 288int mac_check_vnode_access(struct ucred *cred, struct vnode *vp, 289 int acc_mode); 290int mac_check_vnode_chdir(struct ucred *cred, struct vnode *dvp); 291int mac_check_vnode_chroot(struct ucred *cred, struct vnode *dvp); 292int mac_check_vnode_create(struct ucred *cred, struct vnode *dvp, 293 struct componentname *cnp, struct vattr *vap); 294int mac_check_vnode_delete(struct ucred *cred, struct vnode *dvp, 295 struct vnode *vp, struct componentname *cnp); 296int mac_check_vnode_deleteacl(struct ucred *cred, struct vnode *vp, 297 acl_type_t type); 298int mac_check_vnode_deleteextattr(struct ucred *cred, struct vnode *vp, 299 int attrnamespace, const char *name); 300int mac_check_vnode_exec(struct ucred *cred, struct vnode *vp, 301 struct image_params *imgp); 302int mac_check_vnode_getacl(struct ucred *cred, struct vnode *vp, 303 acl_type_t type); 304int mac_check_vnode_getextattr(struct ucred *cred, struct vnode *vp, 305 int attrnamespace, const char *name, struct uio *uio); 306int mac_check_vnode_link(struct ucred *cred, struct vnode *dvp, 307 struct vnode *vp, struct componentname *cnp); 308int mac_check_vnode_listextattr(struct ucred *cred, struct vnode *vp, 309 int attrnamespace); 310int mac_check_vnode_lookup(struct ucred *cred, struct vnode *dvp, 311 struct componentname *cnp); 312int mac_check_vnode_mmap(struct ucred *cred, struct vnode *vp, 313 int prot); 314int mac_check_vnode_mprotect(struct ucred *cred, struct vnode *vp, 315 int prot); 316int mac_check_vnode_open(struct ucred *cred, struct vnode *vp, 317 int acc_mode); 318int mac_check_vnode_poll(struct ucred *active_cred, 319 struct ucred *file_cred, struct vnode *vp); 320int mac_check_vnode_read(struct ucred *active_cred, 321 struct ucred *file_cred, struct vnode *vp); 322int mac_check_vnode_readdir(struct ucred *cred, struct vnode *vp); 323int mac_check_vnode_readlink(struct ucred *cred, struct vnode *vp); 324int mac_check_vnode_rename_from(struct ucred *cred, struct vnode *dvp, 325 struct vnode *vp, struct componentname *cnp); 326int mac_check_vnode_rename_to(struct ucred *cred, struct vnode *dvp, 327 struct vnode *vp, int samedir, struct componentname *cnp); 328int mac_check_vnode_revoke(struct ucred *cred, struct vnode *vp); 329int mac_check_vnode_setacl(struct ucred *cred, struct vnode *vp, 330 acl_type_t type, struct acl *acl); 331int mac_check_vnode_setextattr(struct ucred *cred, struct vnode *vp, 332 int attrnamespace, const char *name, struct uio *uio); 333int mac_check_vnode_setflags(struct ucred *cred, struct vnode *vp, 334 u_long flags); 335int mac_check_vnode_setmode(struct ucred *cred, struct vnode *vp, 336 mode_t mode); 337int mac_check_vnode_setowner(struct ucred *cred, struct vnode *vp, 338 uid_t uid, gid_t gid); 339int mac_check_vnode_setutimes(struct ucred *cred, struct vnode *vp, 340 struct timespec atime, struct timespec mtime); 341int mac_check_vnode_stat(struct ucred *active_cred, 342 struct ucred *file_cred, struct vnode *vp); 343int mac_check_vnode_write(struct ucred *active_cred, 344 struct ucred *file_cred, struct vnode *vp); 345int mac_getsockopt_label(struct ucred *cred, struct socket *so, 346 struct mac *extmac); 347int mac_getsockopt_peerlabel(struct ucred *cred, struct socket *so, 348 struct mac *extmac); 349int mac_ioctl_ifnet_get(struct ucred *cred, struct ifreq *ifr, 350 struct ifnet *ifnet); 351int mac_ioctl_ifnet_set(struct ucred *cred, struct ifreq *ifr, 352 struct ifnet *ifnet); 353int mac_setsockopt_label(struct ucred *cred, struct socket *so, 354 struct mac *extmac); 355int mac_pipe_label_set(struct ucred *cred, struct pipepair *pp, 356 struct label *label); 357void mac_cred_mmapped_drop_perms(struct thread *td, struct ucred *cred); 358 359/* 360 * Calls to help various file systems implement labeling functionality 361 * using their existing EA implementation. 362 */ 363int vop_stdsetlabel_ea(struct vop_setlabel_args *ap); 364 365#endif /* !_KERNEL */ 366 367#endif /* !_SYS_MAC_H */ 368