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 */