mac_framework.h revision 119546
155714Skris/*- 255714Skris * Copyright (c) 1999, 2000, 2001, 2002 Robert N. M. Watson 355714Skris * Copyright (c) 2001, 2002, 2003 Networks Associates Technology, Inc. 455714Skris * All rights reserved. 555714Skris * 655714Skris * This software was developed by Robert Watson for the TrustedBSD Project. 755714Skris * 8280304Sjkim * This software was developed for the FreeBSD Project in part by Network 955714Skris * Associates Laboratories, the Security Research Division of Network 1055714Skris * Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), 1155714Skris * as part of the DARPA CHATS research program. 1255714Skris * 1355714Skris * Redistribution and use in source and binary forms, with or without 1455714Skris * modification, are permitted provided that the following conditions 15280304Sjkim * are met: 1655714Skris * 1. Redistributions of source code must retain the above copyright 1755714Skris * notice, this list of conditions and the following disclaimer. 1855714Skris * 2. Redistributions in binary form must reproduce the above copyright 1955714Skris * notice, this list of conditions and the following disclaimer in the 2055714Skris * documentation and/or other materials provided with the distribution. 2155714Skris * 22280304Sjkim * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 2355714Skris * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 2455714Skris * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2555714Skris * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 2655714Skris * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2755714Skris * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2855714Skris * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2955714Skris * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 3055714Skris * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 3155714Skris * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 3255714Skris * SUCH DAMAGE. 3355714Skris * 3455714Skris * $FreeBSD: head/sys/security/mac/mac_framework.h 119546 2003-08-29 02:43:57Z rwatson $ 3555714Skris */ 3655714Skris/* 37280304Sjkim * Userland/kernel interface for Mandatory Access Control. 3855714Skris * 3955714Skris * The POSIX.1e implementation page may be reached at: 40280304Sjkim * http://www.trustedbsd.org/ 4155714Skris */ 4255714Skris#ifndef _SYS_MAC_H 4355714Skris#define _SYS_MAC_H 4455714Skris 4555714Skris#include <sys/_label.h> 4655714Skris 4755714Skris#ifndef _POSIX_MAC 4855714Skris#define _POSIX_MAC 4955714Skris#endif 5055714Skris 5155714Skris/* 52280304Sjkim * MAC framework-related constants and limits. 5355714Skris */ 5455714Skris#define MAC_MAX_POLICY_NAME 32 5555714Skris#define MAC_MAX_LABEL_ELEMENT_NAME 32 5655714Skris#define MAC_MAX_LABEL_ELEMENT_DATA 4096 5755714Skris#define MAC_MAX_LABEL_BUF_LEN 8192 5855714Skris 5955714Skrisstruct mac { 6055714Skris size_t m_buflen; 6155714Skris char *m_string; 6255714Skris}; 6355714Skris 6455714Skristypedef struct mac *mac_t; 6555714Skris 6655714Skris#ifndef _KERNEL 67280304Sjkim 68280304Sjkim/* 69280304Sjkim * Location of the userland MAC framework configuration file. mac.conf 7055714Skris * binds policy names to shared libraries that understand those policies, 71280304Sjkim * as well as setting defaults for MAC-aware applications. 72280304Sjkim */ 73280304Sjkim#define MAC_CONFFILE "/etc/mac.conf" 74280304Sjkim 7555714Skris/* 7655714Skris * Extended non-POSIX.1e interfaces that offer additional services 77280304Sjkim * available from the userland and kernel MAC frameworks. 78280304Sjkim */ 79280304Sjkimint mac_execve(char *fname, char **argv, char **envv, mac_t _label); 80280304Sjkimint mac_free(mac_t _label); 81280304Sjkimint mac_from_text(mac_t *_label, const char *_text); 82280304Sjkimint mac_get_fd(int _fd, mac_t _label); 83280304Sjkimint mac_get_file(const char *_path, mac_t _label); 84280304Sjkimint mac_get_link(const char *_path, mac_t _label); 8555714Skrisint mac_get_pid(pid_t _pid, mac_t _label); 86280304Sjkimint mac_get_proc(mac_t _label); 87280304Sjkimint mac_is_present(const char *_policyname); 88280304Sjkimint mac_prepare(mac_t *_label, const char *_elements); 89280304Sjkimint mac_prepare_file_label(mac_t *_label); 90280304Sjkimint mac_prepare_ifnet_label(mac_t *_label); 91280304Sjkimint mac_prepare_process_label(mac_t *_label); 92280304Sjkimint mac_prepare_type(mac_t *_label, const char *_type); 93238405Sjkimint mac_set_fd(int _fildes, const mac_t _label); 94280304Sjkimint mac_set_file(const char *_path, mac_t _label); 95280304Sjkimint mac_set_link(const char *_path, mac_t _label); 96280304Sjkimint mac_set_proc(const mac_t _label); 97280304Sjkimint mac_syscall(const char *_policyname, int _call, void *_arg); 98280304Sjkimint mac_to_text(mac_t mac, char **_text); 99280304Sjkim 100280304Sjkim#else /* _KERNEL */ 101280304Sjkim 102280304Sjkim/* 103280304Sjkim * Kernel functions to manage and evaluate labels. 104280304Sjkim */ 105280304Sjkimstruct bpf_d; 106280304Sjkimstruct componentname; 107280304Sjkimstruct devfs_dirent; 108280304Sjkimstruct ifnet; 109280304Sjkimstruct ifreq; 110280304Sjkimstruct image_params; 111280304Sjkimstruct ipq; 112238405Sjkimstruct m_tag; 113280304Sjkimstruct mbuf; 114280304Sjkimstruct mount; 115280304Sjkimstruct proc; 116280304Sjkimstruct sockaddr; 117280304Sjkimstruct socket; 118280304Sjkimstruct pipe; 119280304Sjkimstruct thread; 120280304Sjkimstruct timespec; 121280304Sjkimstruct ucred; 122280304Sjkimstruct uio; 123280304Sjkimstruct vattr; 124280304Sjkimstruct vnode; 125280304Sjkim 126238405Sjkim#include <sys/acl.h> /* XXX acl_type_t */ 127280304Sjkim 128280304Sjkimstruct vop_setlabel_args; 129280304Sjkim 130280304Sjkim/* 131280304Sjkim * Label operations. 132280304Sjkim */ 133280304Sjkimvoid mac_init_bpfdesc(struct bpf_d *); 134void mac_init_cred(struct ucred *); 135void mac_init_devfsdirent(struct devfs_dirent *); 136void mac_init_ifnet(struct ifnet *); 137int mac_init_ipq(struct ipq *, int flag); 138int mac_init_socket(struct socket *, int flag); 139void mac_init_pipe(struct pipe *); 140int mac_init_mbuf(struct mbuf *mbuf, int flag); 141int mac_init_mbuf_tag(struct m_tag *, int flag); 142void mac_init_mount(struct mount *); 143void mac_init_proc(struct proc *); 144void mac_init_vnode(struct vnode *); 145void mac_init_vnode_label(struct label *); 146void mac_copy_mbuf_tag(struct m_tag *, struct m_tag *); 147void mac_copy_vnode_label(struct label *, struct label *label); 148void mac_destroy_bpfdesc(struct bpf_d *); 149void mac_destroy_cred(struct ucred *); 150void mac_destroy_devfsdirent(struct devfs_dirent *); 151void mac_destroy_ifnet(struct ifnet *); 152void mac_destroy_ipq(struct ipq *); 153void mac_destroy_socket(struct socket *); 154void mac_destroy_pipe(struct pipe *); 155void mac_destroy_proc(struct proc *); 156void mac_destroy_mbuf_tag(struct m_tag *); 157void mac_destroy_mount(struct mount *); 158void mac_destroy_vnode(struct vnode *); 159void mac_destroy_vnode_label(struct label *); 160 161/* 162 * Labeling event operations: file system objects, and things that 163 * look a lot like file system objects. 164 */ 165void mac_associate_vnode_devfs(struct mount *mp, struct devfs_dirent *de, 166 struct vnode *vp); 167int mac_associate_vnode_extattr(struct mount *mp, struct vnode *vp); 168void mac_associate_vnode_singlelabel(struct mount *mp, struct vnode *vp); 169void mac_create_devfs_device(struct mount *mp, dev_t dev, 170 struct devfs_dirent *de); 171void mac_create_devfs_directory(struct mount *mp, char *dirname, 172 int dirnamelen, struct devfs_dirent *de); 173void mac_create_devfs_symlink(struct ucred *cred, struct mount *mp, 174 struct devfs_dirent *dd, struct devfs_dirent *de); 175int mac_create_vnode_extattr(struct ucred *cred, struct mount *mp, 176 struct vnode *dvp, struct vnode *vp, struct componentname *cnp); 177void mac_create_mount(struct ucred *cred, struct mount *mp); 178void mac_create_root_mount(struct ucred *cred, struct mount *mp); 179void mac_relabel_vnode(struct ucred *cred, struct vnode *vp, 180 struct label *newlabel); 181void mac_update_devfsdirent(struct mount *mp, struct devfs_dirent *de, 182 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_reflect_mbuf_icmp(struct mbuf *m); 214void mac_reflect_mbuf_tcp(struct mbuf *m); 215void mac_update_ipq(struct mbuf *fragment, struct ipq *ipq); 216 217/* 218 * Labeling event operations: processes. 219 */ 220void mac_create_cred(struct ucred *cred_parent, struct ucred *cred_child); 221int mac_execve_enter(struct image_params *imgp, struct mac *mac_p, 222 struct label *execlabel); 223void mac_execve_exit(struct image_params *imgp); 224void mac_execve_transition(struct ucred *old, struct ucred *new, 225 struct vnode *vp, struct label *interpvnodelabel, 226 struct image_params *imgp); 227int mac_execve_will_transition(struct ucred *old, struct vnode *vp, 228 struct label *interpvnodelabel, struct image_params *imgp); 229void mac_create_proc0(struct ucred *cred); 230void mac_create_proc1(struct ucred *cred); 231void mac_thread_userret(struct thread *td); 232 233/* Access control checks. */ 234int mac_check_bpfdesc_receive(struct bpf_d *bpf_d, struct ifnet *ifnet); 235int mac_check_cred_visible(struct ucred *u1, struct ucred *u2); 236int mac_check_ifnet_transmit(struct ifnet *ifnet, struct mbuf *m); 237int mac_check_kenv_dump(struct ucred *cred); 238int mac_check_kenv_get(struct ucred *cred, char *name); 239int mac_check_kenv_set(struct ucred *cred, char *name, char *value); 240int mac_check_kenv_unset(struct ucred *cred, char *name); 241int mac_check_kld_load(struct ucred *cred, struct vnode *vp); 242int mac_check_kld_stat(struct ucred *cred); 243int mac_check_kld_unload(struct ucred *cred); 244int mac_check_mount_stat(struct ucred *cred, struct mount *mp); 245int mac_check_pipe_ioctl(struct ucred *cred, struct pipe *pipe, 246 unsigned long cmd, void *data); 247int mac_check_pipe_poll(struct ucred *cred, struct pipe *pipe); 248int mac_check_pipe_read(struct ucred *cred, struct pipe *pipe); 249int mac_check_pipe_stat(struct ucred *cred, struct pipe *pipe); 250int mac_check_pipe_write(struct ucred *cred, struct pipe *pipe); 251int mac_check_proc_debug(struct ucred *cred, struct proc *proc); 252int mac_check_proc_sched(struct ucred *cred, struct proc *proc); 253int mac_check_proc_signal(struct ucred *cred, struct proc *proc, 254 int signum); 255int mac_check_socket_bind(struct ucred *cred, struct socket *so, 256 struct sockaddr *sockaddr); 257int mac_check_socket_connect(struct ucred *cred, struct socket *so, 258 struct sockaddr *sockaddr); 259int mac_check_socket_deliver(struct socket *so, struct mbuf *m); 260int mac_check_socket_listen(struct ucred *cred, struct socket *so); 261int mac_check_socket_receive(struct ucred *cred, struct socket *so); 262int mac_check_socket_send(struct ucred *cred, struct socket *so); 263int mac_check_socket_visible(struct ucred *cred, struct socket *so); 264int mac_check_sysarch_ioperm(struct ucred *cred); 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_swapoff(struct ucred *cred, struct vnode *vp); 271int mac_check_system_sysctl(struct ucred *cred, int *name, 272 u_int namelen, void *old, size_t *oldlenp, int inkernel, 273 void *new, size_t newlen); 274int mac_check_vnode_access(struct ucred *cred, struct vnode *vp, 275 int acc_mode); 276int mac_check_vnode_chdir(struct ucred *cred, struct vnode *dvp); 277int mac_check_vnode_chroot(struct ucred *cred, struct vnode *dvp); 278int mac_check_vnode_create(struct ucred *cred, struct vnode *dvp, 279 struct componentname *cnp, struct vattr *vap); 280int mac_check_vnode_delete(struct ucred *cred, struct vnode *dvp, 281 struct vnode *vp, struct componentname *cnp); 282int mac_check_vnode_deleteacl(struct ucred *cred, struct vnode *vp, 283 acl_type_t type); 284int mac_check_vnode_deleteextattr(struct ucred *cred, struct vnode *vp, 285 int attrnamespace, const char *name); 286int mac_check_vnode_exec(struct ucred *cred, struct vnode *vp, 287 struct image_params *imgp); 288int mac_check_vnode_getacl(struct ucred *cred, struct vnode *vp, 289 acl_type_t type); 290int mac_check_vnode_getextattr(struct ucred *cred, struct vnode *vp, 291 int attrnamespace, const char *name, struct uio *uio); 292int mac_check_vnode_link(struct ucred *cred, struct vnode *dvp, 293 struct vnode *vp, struct componentname *cnp); 294int mac_check_vnode_listextattr(struct ucred *cred, struct vnode *vp, 295 int attrnamespace); 296int mac_check_vnode_lookup(struct ucred *cred, struct vnode *dvp, 297 struct componentname *cnp); 298int mac_check_vnode_mmap(struct ucred *cred, struct vnode *vp, 299 int prot); 300int mac_check_vnode_mprotect(struct ucred *cred, struct vnode *vp, 301 int prot); 302int mac_check_vnode_open(struct ucred *cred, struct vnode *vp, 303 int acc_mode); 304int mac_check_vnode_poll(struct ucred *active_cred, 305 struct ucred *file_cred, struct vnode *vp); 306int mac_check_vnode_read(struct ucred *active_cred, 307 struct ucred *file_cred, struct vnode *vp); 308int mac_check_vnode_readdir(struct ucred *cred, struct vnode *vp); 309int mac_check_vnode_readlink(struct ucred *cred, struct vnode *vp); 310int mac_check_vnode_rename_from(struct ucred *cred, struct vnode *dvp, 311 struct vnode *vp, struct componentname *cnp); 312int mac_check_vnode_rename_to(struct ucred *cred, struct vnode *dvp, 313 struct vnode *vp, int samedir, struct componentname *cnp); 314int mac_check_vnode_revoke(struct ucred *cred, struct vnode *vp); 315int mac_check_vnode_setacl(struct ucred *cred, struct vnode *vp, 316 acl_type_t type, struct acl *acl); 317int mac_check_vnode_setextattr(struct ucred *cred, struct vnode *vp, 318 int attrnamespace, const char *name, struct uio *uio); 319int mac_check_vnode_setflags(struct ucred *cred, struct vnode *vp, 320 u_long flags); 321int mac_check_vnode_setmode(struct ucred *cred, struct vnode *vp, 322 mode_t mode); 323int mac_check_vnode_setowner(struct ucred *cred, struct vnode *vp, 324 uid_t uid, gid_t gid); 325int mac_check_vnode_setutimes(struct ucred *cred, struct vnode *vp, 326 struct timespec atime, struct timespec mtime); 327int mac_check_vnode_stat(struct ucred *active_cred, 328 struct ucred *file_cred, struct vnode *vp); 329int mac_check_vnode_write(struct ucred *active_cred, 330 struct ucred *file_cred, struct vnode *vp); 331int mac_getsockopt_label_get(struct ucred *cred, struct socket *so, 332 struct mac *extmac); 333int mac_getsockopt_peerlabel_get(struct ucred *cred, struct socket *so, 334 struct mac *extmac); 335int mac_ioctl_ifnet_get(struct ucred *cred, struct ifreq *ifr, 336 struct ifnet *ifnet); 337int mac_ioctl_ifnet_set(struct ucred *cred, struct ifreq *ifr, 338 struct ifnet *ifnet); 339int mac_setsockopt_label_set(struct ucred *cred, struct socket *so, 340 struct mac *extmac); 341int mac_pipe_label_set(struct ucred *cred, struct pipe *pipe, 342 struct label *label); 343void mac_cred_mmapped_drop_perms(struct thread *td, struct ucred *cred); 344 345/* 346 * Calls to help various file systems implement labeling functionality 347 * using their existing EA implementation. 348 */ 349int vop_stdsetlabel_ea(struct vop_setlabel_args *ap); 350 351#endif /* !_KERNEL */ 352 353#endif /* !_SYS_MAC_H */ 354