355 lines
15 KiB
C
355 lines
15 KiB
C
/*-
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* Copyright (c) 1999, 2000, 2001, 2002 Robert N. M. Watson
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* Copyright (c) 2001, 2002, 2003 Networks Associates Technology, Inc.
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* All rights reserved.
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*
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* This software was developed by Robert Watson for the TrustedBSD Project.
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*
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* This software was developed for the FreeBSD Project in part by Network
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* Associates Laboratories, the Security Research Division of Network
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* Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"),
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* as part of the DARPA CHATS research program.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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/*
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* Userland/kernel interface for Mandatory Access Control.
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*
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* The POSIX.1e implementation page may be reached at:
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* http://www.trustedbsd.org/
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*/
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#ifndef _SYS_MAC_H
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#define _SYS_MAC_H
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#include <sys/_label.h>
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#ifndef _POSIX_MAC
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#define _POSIX_MAC
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#endif
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/*
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* MAC framework-related constants and limits.
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*/
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#define MAC_MAX_POLICY_NAME 32
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#define MAC_MAX_LABEL_ELEMENT_NAME 32
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#define MAC_MAX_LABEL_ELEMENT_DATA 4096
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#define MAC_MAX_LABEL_BUF_LEN 8192
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struct mac {
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size_t m_buflen;
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char *m_string;
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};
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typedef struct mac *mac_t;
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#ifndef _KERNEL
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/*
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* Location of the userland MAC framework configuration file. mac.conf
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* binds policy names to shared libraries that understand those policies,
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* as well as setting defaults for MAC-aware applications.
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*/
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#define MAC_CONFFILE "/etc/mac.conf"
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/*
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* Extended non-POSIX.1e interfaces that offer additional services
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* available from the userland and kernel MAC frameworks.
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*/
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int mac_execve(char *fname, char **argv, char **envv,
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mac_t _label);
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int mac_free(mac_t _label);
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int mac_from_text(mac_t *_label, const char *_text);
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int mac_get_fd(int _fd, mac_t _label);
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int mac_get_file(const char *_path, mac_t _label);
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int mac_get_link(const char *_path, mac_t _label);
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int mac_get_pid(pid_t _pid, mac_t _label);
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int mac_get_proc(mac_t _label);
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int mac_is_present(const char *_policyname);
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int mac_prepare(mac_t *_label, char *_elements);
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int mac_prepare_file_label(mac_t *_label);
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int mac_prepare_ifnet_label(mac_t *_label);
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int mac_prepare_process_label(mac_t *_label);
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int mac_prepare_type(mac_t *_label, const char *_type);
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int mac_set_fd(int _fildes, const mac_t _label);
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int mac_set_file(const char *_path, mac_t _label);
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int mac_set_link(const char *_path, mac_t _label);
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int mac_set_proc(const mac_t _label);
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int mac_syscall(const char *_policyname, int _call, void *_arg);
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int mac_to_text(mac_t mac, char **_text);
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#else /* _KERNEL */
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/*
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* Kernel functions to manage and evaluate labels.
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*/
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struct bpf_d;
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struct componentname;
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struct devfs_dirent;
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struct ifnet;
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struct ifreq;
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struct image_params;
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struct ipq;
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struct m_tag;
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struct mbuf;
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struct mount;
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struct proc;
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struct sockaddr;
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struct socket;
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struct pipe;
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struct thread;
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struct timespec;
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struct ucred;
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struct uio;
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struct vattr;
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struct vnode;
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#include <sys/acl.h> /* XXX acl_type_t */
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struct vop_setlabel_args;
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/*
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* Label operations.
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*/
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void mac_init_bpfdesc(struct bpf_d *);
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void mac_init_cred(struct ucred *);
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void mac_init_devfsdirent(struct devfs_dirent *);
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void mac_init_ifnet(struct ifnet *);
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int mac_init_ipq(struct ipq *, int flag);
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int mac_init_socket(struct socket *, int flag);
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void mac_init_pipe(struct pipe *);
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int mac_init_mbuf(struct mbuf *mbuf, int flag);
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int mac_init_mbuf_tag(struct m_tag *, int flag);
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void mac_init_mount(struct mount *);
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void mac_init_proc(struct proc *);
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void mac_init_vnode(struct vnode *);
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void mac_init_vnode_label(struct label *);
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void mac_copy_mbuf_tag(struct m_tag *, struct m_tag *);
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void mac_copy_vnode_label(struct label *, struct label *label);
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void mac_destroy_bpfdesc(struct bpf_d *);
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void mac_destroy_cred(struct ucred *);
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void mac_destroy_devfsdirent(struct devfs_dirent *);
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void mac_destroy_ifnet(struct ifnet *);
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void mac_destroy_ipq(struct ipq *);
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void mac_destroy_socket(struct socket *);
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void mac_destroy_pipe(struct pipe *);
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void mac_destroy_proc(struct proc *);
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void mac_destroy_mbuf_tag(struct m_tag *);
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void mac_destroy_mount(struct mount *);
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void mac_destroy_vnode(struct vnode *);
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void mac_destroy_vnode_label(struct label *);
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/*
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* Labeling event operations: file system objects, and things that
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* look a lot like file system objects.
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*/
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void mac_associate_vnode_devfs(struct mount *mp, struct devfs_dirent *de,
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struct vnode *vp);
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int mac_associate_vnode_extattr(struct mount *mp, struct vnode *vp);
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void mac_associate_vnode_singlelabel(struct mount *mp, struct vnode *vp);
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void mac_create_devfs_device(struct mount *mp, dev_t dev,
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struct devfs_dirent *de);
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void mac_create_devfs_directory(struct mount *mp, char *dirname,
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int dirnamelen, struct devfs_dirent *de);
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void mac_create_devfs_symlink(struct ucred *cred, struct mount *mp,
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struct devfs_dirent *dd, struct devfs_dirent *de);
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int mac_create_vnode_extattr(struct ucred *cred, struct mount *mp,
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struct vnode *dvp, struct vnode *vp, struct componentname *cnp);
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void mac_create_mount(struct ucred *cred, struct mount *mp);
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void mac_create_root_mount(struct ucred *cred, struct mount *mp);
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void mac_relabel_vnode(struct ucred *cred, struct vnode *vp,
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struct label *newlabel);
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void mac_update_devfsdirent(struct mount *mp, struct devfs_dirent *de,
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struct vnode *vp);
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/*
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* Labeling event operations: IPC objects.
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*/
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void mac_create_mbuf_from_socket(struct socket *so, struct mbuf *m);
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void mac_create_socket(struct ucred *cred, struct socket *socket);
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void mac_create_socket_from_socket(struct socket *oldsocket,
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struct socket *newsocket);
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void mac_set_socket_peer_from_mbuf(struct mbuf *mbuf,
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struct socket *socket);
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void mac_set_socket_peer_from_socket(struct socket *oldsocket,
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struct socket *newsocket);
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void mac_create_pipe(struct ucred *cred, struct pipe *pipe);
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/*
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* Labeling event operations: network objects.
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*/
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void mac_create_bpfdesc(struct ucred *cred, struct bpf_d *bpf_d);
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void mac_create_ifnet(struct ifnet *ifp);
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void mac_create_ipq(struct mbuf *fragment, struct ipq *ipq);
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void mac_create_datagram_from_ipq(struct ipq *ipq, struct mbuf *datagram);
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void mac_create_fragment(struct mbuf *datagram, struct mbuf *fragment);
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void mac_create_mbuf_from_mbuf(struct mbuf *oldmbuf, struct mbuf *newmbuf);
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void mac_create_mbuf_linklayer(struct ifnet *ifnet, struct mbuf *m);
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void mac_create_mbuf_from_bpfdesc(struct bpf_d *bpf_d, struct mbuf *m);
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void mac_create_mbuf_from_ifnet(struct ifnet *ifnet, struct mbuf *m);
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void mac_create_mbuf_multicast_encap(struct mbuf *oldmbuf,
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struct ifnet *ifnet, struct mbuf *newmbuf);
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void mac_create_mbuf_netlayer(struct mbuf *oldmbuf, struct mbuf *newmbuf);
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int mac_fragment_match(struct mbuf *fragment, struct ipq *ipq);
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void mac_reflect_mbuf_icmp(struct mbuf *m);
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void mac_reflect_mbuf_tcp(struct mbuf *m);
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void mac_update_ipq(struct mbuf *fragment, struct ipq *ipq);
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/*
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* Labeling event operations: processes.
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*/
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void mac_create_cred(struct ucred *cred_parent, struct ucred *cred_child);
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int mac_execve_enter(struct image_params *imgp, struct mac *mac_p,
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struct label *execlabel);
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void mac_execve_exit(struct image_params *imgp);
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void mac_execve_transition(struct ucred *old, struct ucred *new,
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struct vnode *vp, struct label *interpvnodelabel,
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struct image_params *imgp);
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int mac_execve_will_transition(struct ucred *old, struct vnode *vp,
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struct label *interpvnodelabel, struct image_params *imgp);
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void mac_create_proc0(struct ucred *cred);
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void mac_create_proc1(struct ucred *cred);
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void mac_thread_userret(struct thread *td);
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/* Access control checks. */
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int mac_check_bpfdesc_receive(struct bpf_d *bpf_d, struct ifnet *ifnet);
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int mac_check_cred_visible(struct ucred *u1, struct ucred *u2);
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int mac_check_ifnet_transmit(struct ifnet *ifnet, struct mbuf *m);
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int mac_check_kenv_dump(struct ucred *cred);
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int mac_check_kenv_get(struct ucred *cred, char *name);
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int mac_check_kenv_set(struct ucred *cred, char *name, char *value);
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int mac_check_kenv_unset(struct ucred *cred, char *name);
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int mac_check_kld_load(struct ucred *cred, struct vnode *vp);
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int mac_check_kld_stat(struct ucred *cred);
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int mac_check_kld_unload(struct ucred *cred);
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int mac_check_mount_stat(struct ucred *cred, struct mount *mp);
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int mac_check_pipe_ioctl(struct ucred *cred, struct pipe *pipe,
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unsigned long cmd, void *data);
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int mac_check_pipe_poll(struct ucred *cred, struct pipe *pipe);
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int mac_check_pipe_read(struct ucred *cred, struct pipe *pipe);
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int mac_check_pipe_stat(struct ucred *cred, struct pipe *pipe);
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int mac_check_pipe_write(struct ucred *cred, struct pipe *pipe);
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int mac_check_proc_debug(struct ucred *cred, struct proc *proc);
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int mac_check_proc_sched(struct ucred *cred, struct proc *proc);
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int mac_check_proc_signal(struct ucred *cred, struct proc *proc,
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int signum);
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int mac_check_socket_bind(struct ucred *cred, struct socket *so,
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struct sockaddr *sockaddr);
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int mac_check_socket_connect(struct ucred *cred, struct socket *so,
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struct sockaddr *sockaddr);
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int mac_check_socket_deliver(struct socket *so, struct mbuf *m);
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int mac_check_socket_listen(struct ucred *cred, struct socket *so);
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int mac_check_socket_receive(struct ucred *cred, struct socket *so);
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int mac_check_socket_send(struct ucred *cred, struct socket *so);
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int mac_check_socket_visible(struct ucred *cred, struct socket *so);
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int mac_check_sysarch_ioperm(struct ucred *cred);
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int mac_check_system_acct(struct ucred *cred, struct vnode *vp);
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int mac_check_system_nfsd(struct ucred *cred);
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int mac_check_system_reboot(struct ucred *cred, int howto);
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int mac_check_system_settime(struct ucred *cred);
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int mac_check_system_swapon(struct ucred *cred, struct vnode *vp);
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int mac_check_system_swapoff(struct ucred *cred, struct vnode *vp);
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int mac_check_system_sysctl(struct ucred *cred, int *name,
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u_int namelen, void *old, size_t *oldlenp, int inkernel,
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void *new, size_t newlen);
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int mac_check_vnode_access(struct ucred *cred, struct vnode *vp,
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int acc_mode);
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int mac_check_vnode_chdir(struct ucred *cred, struct vnode *dvp);
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int mac_check_vnode_chroot(struct ucred *cred, struct vnode *dvp);
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int mac_check_vnode_create(struct ucred *cred, struct vnode *dvp,
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struct componentname *cnp, struct vattr *vap);
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int mac_check_vnode_delete(struct ucred *cred, struct vnode *dvp,
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struct vnode *vp, struct componentname *cnp);
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int mac_check_vnode_deleteacl(struct ucred *cred, struct vnode *vp,
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acl_type_t type);
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int mac_check_vnode_deleteextattr(struct ucred *cred, struct vnode *vp,
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int attrnamespace, const char *name);
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int mac_check_vnode_exec(struct ucred *cred, struct vnode *vp,
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struct image_params *imgp);
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int mac_check_vnode_getacl(struct ucred *cred, struct vnode *vp,
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acl_type_t type);
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int mac_check_vnode_getextattr(struct ucred *cred, struct vnode *vp,
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int attrnamespace, const char *name, struct uio *uio);
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int mac_check_vnode_link(struct ucred *cred, struct vnode *dvp,
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struct vnode *vp, struct componentname *cnp);
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int mac_check_vnode_listextattr(struct ucred *cred, struct vnode *vp,
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int attrnamespace);
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int mac_check_vnode_lookup(struct ucred *cred, struct vnode *dvp,
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struct componentname *cnp);
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int mac_check_vnode_mmap(struct ucred *cred, struct vnode *vp,
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int prot);
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int mac_check_vnode_mprotect(struct ucred *cred, struct vnode *vp,
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int prot);
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int mac_check_vnode_open(struct ucred *cred, struct vnode *vp,
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int acc_mode);
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int mac_check_vnode_poll(struct ucred *active_cred,
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struct ucred *file_cred, struct vnode *vp);
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int mac_check_vnode_read(struct ucred *active_cred,
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struct ucred *file_cred, struct vnode *vp);
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int mac_check_vnode_readdir(struct ucred *cred, struct vnode *vp);
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int mac_check_vnode_readlink(struct ucred *cred, struct vnode *vp);
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int mac_check_vnode_rename_from(struct ucred *cred, struct vnode *dvp,
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struct vnode *vp, struct componentname *cnp);
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int mac_check_vnode_rename_to(struct ucred *cred, struct vnode *dvp,
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struct vnode *vp, int samedir, struct componentname *cnp);
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int mac_check_vnode_revoke(struct ucred *cred, struct vnode *vp);
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int mac_check_vnode_setacl(struct ucred *cred, struct vnode *vp,
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acl_type_t type, struct acl *acl);
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int mac_check_vnode_setextattr(struct ucred *cred, struct vnode *vp,
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int attrnamespace, const char *name, struct uio *uio);
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int mac_check_vnode_setflags(struct ucred *cred, struct vnode *vp,
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u_long flags);
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int mac_check_vnode_setmode(struct ucred *cred, struct vnode *vp,
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mode_t mode);
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int mac_check_vnode_setowner(struct ucred *cred, struct vnode *vp,
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uid_t uid, gid_t gid);
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int mac_check_vnode_setutimes(struct ucred *cred, struct vnode *vp,
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struct timespec atime, struct timespec mtime);
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int mac_check_vnode_stat(struct ucred *active_cred,
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struct ucred *file_cred, struct vnode *vp);
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int mac_check_vnode_write(struct ucred *active_cred,
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struct ucred *file_cred, struct vnode *vp);
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int mac_getsockopt_label_get(struct ucred *cred, struct socket *so,
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struct mac *extmac);
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int mac_getsockopt_peerlabel_get(struct ucred *cred, struct socket *so,
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struct mac *extmac);
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int mac_ioctl_ifnet_get(struct ucred *cred, struct ifreq *ifr,
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struct ifnet *ifnet);
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int mac_ioctl_ifnet_set(struct ucred *cred, struct ifreq *ifr,
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struct ifnet *ifnet);
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int mac_setsockopt_label_set(struct ucred *cred, struct socket *so,
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struct mac *extmac);
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int mac_pipe_label_set(struct ucred *cred, struct pipe *pipe,
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struct label *label);
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void mac_cred_mmapped_drop_perms(struct thread *td, struct ucred *cred);
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/*
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* Calls to help various file systems implement labeling functionality
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* using their existing EA implementation.
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*/
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int vop_stdsetlabel_ea(struct vop_setlabel_args *ap);
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#endif /* !_KERNEL */
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#endif /* !_SYS_MAC_H */
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