2 * Copyright (c) 1999-2002 Robert N. M. Watson
3 * Copyright (c) 2001-2004 Networks Associates Technology, Inc.
6 * This software was developed by Robert Watson for the TrustedBSD Project.
8 * This software was developed for the FreeBSD Project in part by Network
9 * Associates Laboratories, the Security Research Division of Network
10 * Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"),
11 * as part of the DARPA CHATS research program.
13 * Redistribution and use in source and binary forms, with or without
14 * modification, are permitted provided that the following conditions
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.
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
37 * Definitions for the TrustedBSD MLS confidentiality policy module.
39 #ifndef _SYS_SECURITY_MAC_MLS_H
40 #define _SYS_SECURITY_MAC_MLS_H
42 #define MAC_MLS_EXTATTR_NAMESPACE EXTATTR_NAMESPACE_SYSTEM
43 #define MAC_MLS_EXTATTR_NAME "mac_mls"
45 #define MAC_MLS_LABEL_NAME "mls"
47 #define MAC_MLS_FLAG_EFFECTIVE 0x00000001 /* mm_effective initialized */
48 #define MAC_MLS_FLAG_RANGE 0x00000002 /* mm_range* initialized */
49 #define MAC_MLS_FLAGS_BOTH (MAC_MLS_FLAG_EFFECTIVE | MAC_MLS_FLAG_RANGE)
51 #define MAC_MLS_TYPE_UNDEF 0 /* Undefined */
52 #define MAC_MLS_TYPE_LEVEL 1 /* Hierarchal level with mm_level. */
53 #define MAC_MLS_TYPE_LOW 2 /* Dominated by any
54 * MAC_MLS_TYPE_LABEL. */
55 #define MAC_MLS_TYPE_HIGH 3 /* Dominates any
56 * MAC_MLS_TYPE_LABEL. */
57 #define MAC_MLS_TYPE_EQUAL 4 /* Equivilent to any
58 * MAC_MLS_TYPE_LABEL. */
61 * Structures and constants associated with a Multi-Level Security policy.
62 * mac_mls represents an MLS label, with mm_type determining its properties,
63 * and mm_level represents the hierarchal sensitivity level if valid for the
64 * current mm_type. If compartments are used, the same semantics apply as
65 * long as the suject is in every compartment the object is in. LOW, EQUAL
66 * and HIGH cannot be in compartments.
70 * MLS compartments bit set size (in bits).
72 #define MAC_MLS_MAX_COMPARTMENTS 256
74 struct mac_mls_element {
77 u_char mme_compartments[MAC_MLS_MAX_COMPARTMENTS >> 3];
81 * MLS labels consist of two components: an effective label, and a label
82 * range. Depending on the context, one or both may be used; the mb_flags
83 * field permits the provider to indicate what fields are intended for
88 struct mac_mls_element mm_effective;
89 struct mac_mls_element mm_rangelow, mm_rangehigh;
93 * MLS compartments bit test/set macros.
94 * The range is 1 to MAC_MLS_MAX_COMPARTMENTS.
96 #define MAC_MLS_BIT_TEST(b, w) \
97 ((w)[(((b) - 1) >> 3)] & (1 << (((b) - 1) & 7)))
98 #define MAC_MLS_BIT_SET(b, w) \
99 ((w)[(((b) - 1) >> 3)] |= (1 << (((b) - 1) & 7)))
100 #define MAC_MLS_BIT_SET_EMPTY(set) mls_bit_set_empty(set)
102 #endif /* !_SYS_SECURITY_MAC_MLS_H */