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