mac_framework.h revision 112675
1100978Srwatson/*- 2100978Srwatson * Copyright (c) 1999, 2000, 2001, 2002 Robert N. M. Watson 3100978Srwatson * Copyright (c) 2001, 2002 Networks Associates Technology, Inc. 4100978Srwatson * All rights reserved. 5100978Srwatson * 6100978Srwatson * This software was developed by Robert Watson for the TrustedBSD Project. 7100978Srwatson * 8106392Srwatson * This software was developed for the FreeBSD Project in part by Network 9106392Srwatson * Associates Laboratories, the Security Research Division of Network 10106392Srwatson * Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), 11106392Srwatson * as part of the DARPA CHATS research program. 12100978Srwatson * 13100978Srwatson * Redistribution and use in source and binary forms, with or without 14100978Srwatson * modification, are permitted provided that the following conditions 15100978Srwatson * are met: 16100978Srwatson * 1. Redistributions of source code must retain the above copyright 17100978Srwatson * notice, this list of conditions and the following disclaimer. 18100978Srwatson * 2. Redistributions in binary form must reproduce the above copyright 19100978Srwatson * notice, this list of conditions and the following disclaimer in the 20100978Srwatson * documentation and/or other materials provided with the distribution. 21100978Srwatson * 22100978Srwatson * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 23100978Srwatson * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24100978Srwatson * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25100978Srwatson * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 26100978Srwatson * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27100978Srwatson * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28100978Srwatson * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29100978Srwatson * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30100978Srwatson * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31100978Srwatson * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32100978Srwatson * SUCH DAMAGE. 33100978Srwatson * 34100978Srwatson * $FreeBSD: head/sys/security/mac/mac_framework.h 112675 2003-03-26 15:12:03Z rwatson $ 35100978Srwatson */ 36100978Srwatson/* 37100978Srwatson * Userland/kernel interface for Mandatory Access Control. 38100978Srwatson * 39100978Srwatson * The POSIX.1e implementation page may be reached at: 40100978Srwatson * http://www.trustedbsd.org/ 41100978Srwatson */ 42100978Srwatson#ifndef _SYS_MAC_H 43100978Srwatson#define _SYS_MAC_H 44100978Srwatson 45101826Srwatson#include <sys/_label.h> 46101826Srwatson 47100978Srwatson#ifndef _POSIX_MAC 48100978Srwatson#define _POSIX_MAC 49100978Srwatson#endif 50100978Srwatson 51100978Srwatson/* 52102123Srwatson * MAC framework-related constants and limits. 53102123Srwatson */ 54105693Srwatson#define MAC_MAX_POLICY_NAME 32 55105693Srwatson#define MAC_MAX_LABEL_ELEMENT_NAME 32 56105693Srwatson#define MAC_MAX_LABEL_ELEMENT_DATA 4096 57105693Srwatson#define MAC_MAX_LABEL_BUF_LEN 8192 58102123Srwatson 59105693Srwatsonstruct mac { 60105693Srwatson size_t m_buflen; 61105693Srwatson char *m_string; 62105693Srwatson}; 63105693Srwatson 64105693Srwatsontypedef struct mac *mac_t; 65105693Srwatson 66105693Srwatson#ifndef _KERNEL 67105693Srwatson 68102123Srwatson/* 69105693Srwatson * Location of the userland MAC framework configuration file. mac.conf 70105693Srwatson * binds policy names to shared libraries that understand those policies, 71105693Srwatson * as well as setting defaults for MAC-aware applications. 72100978Srwatson */ 73105693Srwatson#define MAC_CONFFILE "/etc/mac.conf" 74100978Srwatson 75100978Srwatson/* 76105693Srwatson * Extended non-POSIX.1e interfaces that offer additional services 77105693Srwatson * available from the userland and kernel MAC frameworks. 78100978Srwatson */ 79106468Srwatsonint mac_execve(char *fname, char **argv, char **envv, 80106468Srwatson mac_t _label); 81105693Srwatsonint mac_free(mac_t _label); 82105693Srwatsonint mac_from_text(mac_t *_label, const char *_text); 83105693Srwatsonint mac_get_fd(int _fd, mac_t _label); 84105693Srwatsonint mac_get_file(const char *_path, mac_t _label); 85105693Srwatsonint mac_get_link(const char *_path, mac_t _label); 86105693Srwatsonint mac_get_pid(pid_t _pid, mac_t _label); 87105693Srwatsonint mac_get_proc(mac_t _label); 88105693Srwatsonint mac_is_present(const char *_policyname); 89105693Srwatsonint mac_prepare(mac_t *_label, char *_elements); 90105693Srwatsonint mac_prepare_file_label(mac_t *_label); 91105693Srwatsonint mac_prepare_ifnet_label(mac_t *_label); 92105693Srwatsonint mac_prepare_process_label(mac_t *_label); 93105693Srwatsonint mac_set_fd(int _fildes, const mac_t _label); 94105693Srwatsonint mac_set_file(const char *_path, mac_t _label); 95105693Srwatsonint mac_set_link(const char *_path, mac_t _label); 96105693Srwatsonint mac_set_proc(const mac_t _label); 97105693Srwatsonint mac_syscall(const char *_policyname, int _call, void *_arg); 98105693Srwatsonint mac_to_text(mac_t mac, char **_text); 99105693Srwatson 100106093Srwatson#else /* _KERNEL */ 101105693Srwatson 102105693Srwatson/* 103100978Srwatson * Kernel functions to manage and evaluate labels. 104100978Srwatson */ 105100978Srwatsonstruct bpf_d; 106100978Srwatsonstruct componentname; 107100978Srwatsonstruct devfs_dirent; 108100978Srwatsonstruct ifnet; 109100978Srwatsonstruct ifreq; 110106468Srwatsonstruct image_params; 111100978Srwatsonstruct ipq; 112100978Srwatsonstruct mbuf; 113100978Srwatsonstruct mount; 114100978Srwatsonstruct proc; 115100978Srwatsonstruct sockaddr; 116100978Srwatsonstruct socket; 117100978Srwatsonstruct pipe; 118104338Srwatsonstruct thread; 119100978Srwatsonstruct timespec; 120100978Srwatsonstruct ucred; 121100978Srwatsonstruct uio; 122100978Srwatsonstruct vattr; 123100978Srwatsonstruct vnode; 124100978Srwatson 125100978Srwatson#include <sys/acl.h> /* XXX acl_type_t */ 126100978Srwatson 127100978Srwatsonstruct vop_setlabel_args; 128100978Srwatson 129100978Srwatson/* 130100978Srwatson * Label operations. 131100978Srwatson */ 132100978Srwatsonvoid mac_init_bpfdesc(struct bpf_d *); 133100978Srwatsonvoid mac_init_cred(struct ucred *); 134100978Srwatsonvoid mac_init_devfsdirent(struct devfs_dirent *); 135100978Srwatsonvoid mac_init_ifnet(struct ifnet *); 136112675Srwatsonint mac_init_ipq(struct ipq *, int flag); 137104541Srwatsonint mac_init_socket(struct socket *, int flag); 138100978Srwatsonvoid mac_init_pipe(struct pipe *); 139104541Srwatsonint mac_init_mbuf(struct mbuf *m, int flag); 140100978Srwatsonvoid mac_init_mount(struct mount *); 141107105Srwatsonvoid mac_init_proc(struct proc *); 142100978Srwatsonvoid mac_init_vnode(struct vnode *); 143105988Srwatsonvoid mac_init_vnode_label(struct label *); 144105988Srwatsonvoid mac_copy_vnode_label(struct label *, struct label *label); 145100978Srwatsonvoid mac_destroy_bpfdesc(struct bpf_d *); 146100978Srwatsonvoid mac_destroy_cred(struct ucred *); 147100978Srwatsonvoid mac_destroy_devfsdirent(struct devfs_dirent *); 148100978Srwatsonvoid mac_destroy_ifnet(struct ifnet *); 149100978Srwatsonvoid mac_destroy_ipq(struct ipq *); 150100978Srwatsonvoid mac_destroy_socket(struct socket *); 151100978Srwatsonvoid mac_destroy_pipe(struct pipe *); 152107105Srwatsonvoid mac_destroy_proc(struct proc *); 153100978Srwatsonvoid mac_destroy_mbuf(struct mbuf *); 154100978Srwatsonvoid mac_destroy_mount(struct mount *); 155100978Srwatsonvoid mac_destroy_vnode(struct vnode *); 156105988Srwatsonvoid mac_destroy_vnode_label(struct label *); 157100978Srwatson 158100978Srwatson/* 159100978Srwatson * Labeling event operations: file system objects, and things that 160100978Srwatson * look a lot like file system objects. 161100978Srwatson */ 162105988Srwatsonvoid mac_associate_vnode_devfs(struct mount *mp, struct devfs_dirent *de, 163105988Srwatson struct vnode *vp); 164105988Srwatsonint mac_associate_vnode_extattr(struct mount *mp, struct vnode *vp); 165105988Srwatsonvoid mac_associate_vnode_singlelabel(struct mount *mp, struct vnode *vp); 166107698Srwatsonvoid mac_create_devfs_device(struct mount *mp, dev_t dev, 167100978Srwatson struct devfs_dirent *de); 168107698Srwatsonvoid mac_create_devfs_directory(struct mount *mp, char *dirname, 169107698Srwatson int dirnamelen, struct devfs_dirent *de); 170107698Srwatsonvoid mac_create_devfs_symlink(struct ucred *cred, struct mount *mp, 171107698Srwatson struct devfs_dirent *dd, struct devfs_dirent *de); 172105988Srwatsonint mac_create_vnode_extattr(struct ucred *cred, struct mount *mp, 173105988Srwatson struct vnode *dvp, struct vnode *vp, struct componentname *cnp); 174100978Srwatsonvoid mac_create_mount(struct ucred *cred, struct mount *mp); 175100978Srwatsonvoid mac_create_root_mount(struct ucred *cred, struct mount *mp); 176100978Srwatsonvoid mac_relabel_vnode(struct ucred *cred, struct vnode *vp, 177100978Srwatson struct label *newlabel); 178107698Srwatsonvoid mac_update_devfsdirent(struct mount *mp, struct devfs_dirent *de, 179107698Srwatson struct vnode *vp); 180100978Srwatson 181100978Srwatson/* 182100978Srwatson * Labeling event operations: IPC objects. 183100978Srwatson */ 184100978Srwatsonvoid mac_create_mbuf_from_socket(struct socket *so, struct mbuf *m); 185100978Srwatsonvoid mac_create_socket(struct ucred *cred, struct socket *socket); 186100978Srwatsonvoid mac_create_socket_from_socket(struct socket *oldsocket, 187100978Srwatson struct socket *newsocket); 188100978Srwatsonvoid mac_set_socket_peer_from_mbuf(struct mbuf *mbuf, 189100978Srwatson struct socket *socket); 190100978Srwatsonvoid mac_set_socket_peer_from_socket(struct socket *oldsocket, 191100978Srwatson struct socket *newsocket); 192100978Srwatsonvoid mac_create_pipe(struct ucred *cred, struct pipe *pipe); 193100978Srwatson 194100978Srwatson/* 195100978Srwatson * Labeling event operations: network objects. 196100978Srwatson */ 197100978Srwatsonvoid mac_create_bpfdesc(struct ucred *cred, struct bpf_d *bpf_d); 198100978Srwatsonvoid mac_create_ifnet(struct ifnet *ifp); 199100978Srwatsonvoid mac_create_ipq(struct mbuf *fragment, struct ipq *ipq); 200100978Srwatsonvoid mac_create_datagram_from_ipq(struct ipq *ipq, struct mbuf *datagram); 201100978Srwatsonvoid mac_create_fragment(struct mbuf *datagram, struct mbuf *fragment); 202100978Srwatsonvoid mac_create_mbuf_from_mbuf(struct mbuf *oldmbuf, struct mbuf *newmbuf); 203100978Srwatsonvoid mac_create_mbuf_linklayer(struct ifnet *ifnet, struct mbuf *m); 204100978Srwatsonvoid mac_create_mbuf_from_bpfdesc(struct bpf_d *bpf_d, struct mbuf *m); 205100978Srwatsonvoid mac_create_mbuf_from_ifnet(struct ifnet *ifnet, struct mbuf *m); 206100978Srwatsonvoid mac_create_mbuf_multicast_encap(struct mbuf *oldmbuf, 207100978Srwatson struct ifnet *ifnet, struct mbuf *newmbuf); 208100978Srwatsonvoid mac_create_mbuf_netlayer(struct mbuf *oldmbuf, struct mbuf *newmbuf); 209100978Srwatsonint mac_fragment_match(struct mbuf *fragment, struct ipq *ipq); 210100978Srwatsonvoid mac_update_ipq(struct mbuf *fragment, struct ipq *ipq); 211100978Srwatson 212100978Srwatson/* 213100978Srwatson * Labeling event operations: processes. 214100978Srwatson */ 215100978Srwatsonvoid mac_create_cred(struct ucred *cred_parent, struct ucred *cred_child); 216106468Srwatsonint mac_execve_enter(struct image_params *imgp, struct mac *mac_p, 217106468Srwatson struct label *execlabel); 218106468Srwatsonvoid mac_execve_exit(struct image_params *imgp); 219100978Srwatsonvoid mac_execve_transition(struct ucred *old, struct ucred *new, 220106468Srwatson struct vnode *vp, struct label *interpvnodelabel, 221106468Srwatson struct image_params *imgp); 222106468Srwatsonint mac_execve_will_transition(struct ucred *old, struct vnode *vp, 223106468Srwatson struct label *interpvnodelabel, struct image_params *imgp); 224100978Srwatsonvoid mac_create_proc0(struct ucred *cred); 225100978Srwatsonvoid mac_create_proc1(struct ucred *cred); 226104338Srwatsonvoid mac_thread_userret(struct thread *td); 227100978Srwatson 228100978Srwatson/* Access control checks. */ 229100978Srwatsonint mac_check_bpfdesc_receive(struct bpf_d *bpf_d, struct ifnet *ifnet); 230100978Srwatsonint mac_check_cred_visible(struct ucred *u1, struct ucred *u2); 231100978Srwatsonint mac_check_ifnet_transmit(struct ifnet *ifnet, struct mbuf *m); 232106308Srwatsonint mac_check_kenv_dump(struct ucred *cred); 233106308Srwatsonint mac_check_kenv_get(struct ucred *cred, char *name); 234106308Srwatsonint mac_check_kenv_set(struct ucred *cred, char *name, char *value); 235106308Srwatsonint mac_check_kenv_unset(struct ucred *cred, char *name); 236107089Srwatsonint mac_check_kld_load(struct ucred *cred, struct vnode *vp); 237107089Srwatsonint mac_check_kld_stat(struct ucred *cred); 238107089Srwatsonint mac_check_kld_unload(struct ucred *cred); 239100978Srwatsonint mac_check_mount_stat(struct ucred *cred, struct mount *mp); 240100978Srwatsonint mac_check_pipe_ioctl(struct ucred *cred, struct pipe *pipe, 241100978Srwatson unsigned long cmd, void *data); 242102115Srwatsonint mac_check_pipe_poll(struct ucred *cred, struct pipe *pipe); 243102115Srwatsonint mac_check_pipe_read(struct ucred *cred, struct pipe *pipe); 244102115Srwatsonint mac_check_pipe_stat(struct ucred *cred, struct pipe *pipe); 245102115Srwatsonint mac_check_pipe_write(struct ucred *cred, struct pipe *pipe); 246100978Srwatsonint mac_check_proc_debug(struct ucred *cred, struct proc *proc); 247100978Srwatsonint mac_check_proc_sched(struct ucred *cred, struct proc *proc); 248100978Srwatsonint mac_check_proc_signal(struct ucred *cred, struct proc *proc, 249100978Srwatson int signum); 250100978Srwatsonint mac_check_socket_bind(struct ucred *cred, struct socket *so, 251100978Srwatson struct sockaddr *sockaddr); 252100978Srwatsonint mac_check_socket_connect(struct ucred *cred, struct socket *so, 253100978Srwatson struct sockaddr *sockaddr); 254101934Srwatsonint mac_check_socket_deliver(struct socket *so, struct mbuf *m); 255100978Srwatsonint mac_check_socket_listen(struct ucred *cred, struct socket *so); 256104571Srwatsonint mac_check_socket_receive(struct ucred *cred, struct socket *so); 257104571Srwatsonint mac_check_socket_send(struct ucred *cred, struct socket *so); 258100978Srwatsonint mac_check_socket_visible(struct ucred *cred, struct socket *so); 259111939Srwatsonint mac_check_sysarch_ioperm(struct ucred *cred); 260106412Srwatsonint mac_check_system_acct(struct ucred *cred, struct vnode *vp); 261106412Srwatsonint mac_check_system_nfsd(struct ucred *cred); 262106024Srwatsonint mac_check_system_reboot(struct ucred *cred, int howto); 263106369Srwatsonint mac_check_system_settime(struct ucred *cred); 264106023Srwatsonint mac_check_system_swapon(struct ucred *cred, struct vnode *vp); 265111936Srwatsonint mac_check_system_swapoff(struct ucred *cred, struct vnode *vp); 266106025Srwatsonint mac_check_system_sysctl(struct ucred *cred, int *name, 267106025Srwatson u_int namelen, void *old, size_t *oldlenp, int inkernel, 268106025Srwatson void *new, size_t newlen); 269100978Srwatsonint mac_check_vnode_access(struct ucred *cred, struct vnode *vp, 270106212Srwatson int acc_mode); 271100978Srwatsonint mac_check_vnode_chdir(struct ucred *cred, struct vnode *dvp); 272100978Srwatsonint mac_check_vnode_chroot(struct ucred *cred, struct vnode *dvp); 273100978Srwatsonint mac_check_vnode_create(struct ucred *cred, struct vnode *dvp, 274100978Srwatson struct componentname *cnp, struct vattr *vap); 275100978Srwatsonint mac_check_vnode_delete(struct ucred *cred, struct vnode *dvp, 276100978Srwatson struct vnode *vp, struct componentname *cnp); 277100978Srwatsonint mac_check_vnode_deleteacl(struct ucred *cred, struct vnode *vp, 278100978Srwatson acl_type_t type); 279106468Srwatsonint mac_check_vnode_exec(struct ucred *cred, struct vnode *vp, 280106468Srwatson struct image_params *imgp); 281100978Srwatsonint mac_check_vnode_getacl(struct ucred *cred, struct vnode *vp, 282100978Srwatson acl_type_t type); 283100978Srwatsonint mac_check_vnode_getextattr(struct ucred *cred, struct vnode *vp, 284100978Srwatson int attrnamespace, const char *name, struct uio *uio); 285104529Srwatsonint mac_check_vnode_link(struct ucred *cred, struct vnode *dvp, 286104529Srwatson struct vnode *vp, struct componentname *cnp); 287100978Srwatsonint mac_check_vnode_lookup(struct ucred *cred, struct vnode *dvp, 288100978Srwatson struct componentname *cnp); 289104546Srwatsonint mac_check_vnode_mmap(struct ucred *cred, struct vnode *vp, 290104546Srwatson int prot); 291104546Srwatsonint mac_check_vnode_mprotect(struct ucred *cred, struct vnode *vp, 292104546Srwatson int prot); 293100978Srwatsonint mac_check_vnode_open(struct ucred *cred, struct vnode *vp, 294106212Srwatson int acc_mode); 295102129Srwatsonint mac_check_vnode_poll(struct ucred *active_cred, 296102129Srwatson struct ucred *file_cred, struct vnode *vp); 297102129Srwatsonint mac_check_vnode_read(struct ucred *active_cred, 298102129Srwatson struct ucred *file_cred, struct vnode *vp); 299100978Srwatsonint mac_check_vnode_readdir(struct ucred *cred, struct vnode *vp); 300100978Srwatsonint mac_check_vnode_readlink(struct ucred *cred, struct vnode *vp); 301100978Srwatsonint mac_check_vnode_rename_from(struct ucred *cred, struct vnode *dvp, 302100978Srwatson struct vnode *vp, struct componentname *cnp); 303100978Srwatsonint mac_check_vnode_rename_to(struct ucred *cred, struct vnode *dvp, 304100978Srwatson struct vnode *vp, int samedir, struct componentname *cnp); 305100978Srwatsonint mac_check_vnode_revoke(struct ucred *cred, struct vnode *vp); 306100978Srwatsonint mac_check_vnode_setacl(struct ucred *cred, struct vnode *vp, 307100978Srwatson acl_type_t type, struct acl *acl); 308100978Srwatsonint mac_check_vnode_setextattr(struct ucred *cred, struct vnode *vp, 309100978Srwatson int attrnamespace, const char *name, struct uio *uio); 310100978Srwatsonint mac_check_vnode_setflags(struct ucred *cred, struct vnode *vp, 311100978Srwatson u_long flags); 312100978Srwatsonint mac_check_vnode_setmode(struct ucred *cred, struct vnode *vp, 313100978Srwatson mode_t mode); 314100978Srwatsonint mac_check_vnode_setowner(struct ucred *cred, struct vnode *vp, 315100978Srwatson uid_t uid, gid_t gid); 316100978Srwatsonint mac_check_vnode_setutimes(struct ucred *cred, struct vnode *vp, 317100978Srwatson struct timespec atime, struct timespec mtime); 318102129Srwatsonint mac_check_vnode_stat(struct ucred *active_cred, 319102129Srwatson struct ucred *file_cred, struct vnode *vp); 320102129Srwatsonint mac_check_vnode_write(struct ucred *active_cred, 321102129Srwatson struct ucred *file_cred, struct vnode *vp); 322100978Srwatsonint mac_getsockopt_label_get(struct ucred *cred, struct socket *so, 323100978Srwatson struct mac *extmac); 324100978Srwatsonint mac_getsockopt_peerlabel_get(struct ucred *cred, struct socket *so, 325100978Srwatson struct mac *extmac); 326100978Srwatsonint mac_ioctl_ifnet_get(struct ucred *cred, struct ifreq *ifr, 327100978Srwatson struct ifnet *ifnet); 328100978Srwatsonint mac_ioctl_ifnet_set(struct ucred *cred, struct ifreq *ifr, 329100978Srwatson struct ifnet *ifnet); 330100978Srwatsonint mac_setsockopt_label_set(struct ucred *cred, struct socket *so, 331100978Srwatson struct mac *extmac); 332100978Srwatsonint mac_pipe_label_set(struct ucred *cred, struct pipe *pipe, 333100978Srwatson struct label *label); 334107271Srwatsonvoid mac_cred_mmapped_drop_perms(struct thread *td, struct ucred *cred); 335100978Srwatson 336100978Srwatson/* 337100978Srwatson * Calls to help various file systems implement labeling functionality 338100978Srwatson * using their existing EA implementation. 339100978Srwatson */ 340100978Srwatsonint vop_stdsetlabel_ea(struct vop_setlabel_args *ap); 341100978Srwatson 342106093Srwatson#endif /* !_KERNEL */ 343100978Srwatson 344100978Srwatson#endif /* !_SYS_MAC_H */ 345