1/*-
2 * Copyright (c) 1999-2002 Robert N. M. Watson
3 * Copyright (c) 2001-2002 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 NAI Labs,
9 * the Security Research Division of Network Associates, Inc. under
10 * DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the DARPA
11 * 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 * $FreeBSD$
35 */
36/*
37 * Definitions for the TrustedBSD LOMAC integrity policy module.
38 */
39#ifndef _SYS_SECURITY_MAC_LOMAC_H
40#define	_SYS_SECURITY_MAC_LOMAC_H
41
42#define	MAC_LOMAC_EXTATTR_NAMESPACE	EXTATTR_NAMESPACE_SYSTEM
43#define	MAC_LOMAC_EXTATTR_NAME		"mac_lomac"
44
45#define	MAC_LOMAC_LABEL_NAME		"lomac"
46
47#define	MAC_LOMAC_FLAG_SINGLE	0x00000001	/* ml_single initialized */
48#define	MAC_LOMAC_FLAG_RANGE	0x00000002	/* ml_range* initialized */
49#define	MAC_LOMAC_FLAG_AUX	0x00000004	/* ml_auxsingle initialized */
50#define	MAC_LOMAC_FLAGS_BOTH	(MAC_LOMAC_FLAG_SINGLE | MAC_LOMAC_FLAG_RANGE)
51#define	MAC_LOMAC_FLAG_UPDATE	0x00000008	/* must demote this process */
52
53#define	MAC_LOMAC_TYPE_UNDEF	0	/* Undefined */
54#define	MAC_LOMAC_TYPE_GRADE	1	/* Hierarchal grade with mb_grade. */
55#define	MAC_LOMAC_TYPE_LOW	2	/* Dominated by any
56					 * MAC_LOMAC_TYPE_LABEL. */
57#define	MAC_LOMAC_TYPE_HIGH	3	/* Dominates any
58					 * MAC_LOMAC_TYPE_LABEL. */
59#define	MAC_LOMAC_TYPE_EQUAL	4	/* Equivalent to any
60					 * MAC_LOMAC_TYPE_LABEL. */
61
62/*
63 * Structures and constants associated with a LOMAC Integrity policy.
64 * mac_lomac represents a LOMAC label, with mb_type determining its properties,
65 * and mb_grade represents the hierarchal grade if valid for the current
66 * mb_type.
67 */
68
69struct mac_lomac_element {
70	u_short	mle_type;
71	u_short	mle_grade;
72};
73
74/*
75 * LOMAC labels start with two components: a single label, and a label
76 * range.  Depending on the context, one or both may be used; the ml_flags
77 * field permits the provider to indicate what fields are intended for
78 * use.  The auxiliary label works the same way, but is only valid on
79 * filesystem objects to provide inheritance semantics on directories
80 * and "non-demoting" execution on executable files.
81 */
82struct mac_lomac {
83	int				ml_flags;
84	struct mac_lomac_element	ml_single;
85	struct mac_lomac_element	ml_rangelow, ml_rangehigh;
86	struct mac_lomac_element	ml_auxsingle;
87};
88
89#endif /* !_SYS_SECURITY_MAC_LOMAC_H */
90