98 lines
3.7 KiB
C
98 lines
3.7 KiB
C
/*-
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* Copyright (c) 1999-2002 Robert N. M. Watson
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* Copyright (c) 2001-2004 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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* Definitions for the TrustedBSD Biba integrity policy module.
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*/
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#ifndef _SYS_SECURITY_MAC_BIBA_H
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#define _SYS_SECURITY_MAC_BIBA_H
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#define MAC_BIBA_EXTATTR_NAMESPACE EXTATTR_NAMESPACE_SYSTEM
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#define MAC_BIBA_EXTATTR_NAME "mac_biba"
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#define MAC_BIBA_LABEL_NAME "biba"
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#define MAC_BIBA_FLAG_EFFECTIVE 0x00000001 /* mb_effective initialized */
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#define MAC_BIBA_FLAG_RANGE 0x00000002 /* mb_range* initialized */
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#define MAC_BIBA_FLAGS_BOTH (MAC_BIBA_FLAG_EFFECTIVE | MAC_BIBA_FLAG_RANGE)
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#define MAC_BIBA_TYPE_UNDEF 0 /* Undefined */
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#define MAC_BIBA_TYPE_GRADE 1 /* Hierarchal grade with mb_grade. */
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#define MAC_BIBA_TYPE_LOW 2 /* Dominated by any
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* MAC_BIBA_TYPE_LABEL. */
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#define MAC_BIBA_TYPE_HIGH 3 /* Dominates any
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* MAC_BIBA_TYPE_LABEL. */
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#define MAC_BIBA_TYPE_EQUAL 4 /* Equivalent to any
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* MAC_BIBA_TYPE_LABEL. */
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/*
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* Structures and constants associated with a Biba Integrity policy.
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* mac_biba represents a Biba label, with mb_type determining its properties,
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* and mb_grade represents the hierarchal grade if valid for the current
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* mb_type.
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*/
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#define MAC_BIBA_MAX_COMPARTMENTS 256
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struct mac_biba_element {
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u_short mbe_type;
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u_short mbe_grade;
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u_char mbe_compartments[MAC_BIBA_MAX_COMPARTMENTS >> 3];
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};
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/*
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* Biba labels consist of two components: an effective label, and a label
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* range. Depending on the context, one or both may be used; the mb_flags
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* field permits the provider to indicate what fields are intended for
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* use.
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*/
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struct mac_biba {
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int mb_flags;
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struct mac_biba_element mb_effective;
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struct mac_biba_element mb_rangelow, mb_rangehigh;
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};
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/*
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* Biba compartments bit test/set macros.
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* The range is 1 to MAC_BIBA_MAX_COMPARTMENTS.
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*/
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#define MAC_BIBA_BIT_TEST(b, w) \
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((w)[(((b) - 1) >> 3)] & (1 << (((b) - 1) & 7)))
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#define MAC_BIBA_BIT_SET(b, w) \
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((w)[(((b) - 1) >> 3)] |= (1 << (((b) - 1) & 7)))
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#define MAC_BIBA_BIT_SET_EMPTY(set) biba_bit_set_empty(set)
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#endif /* !_SYS_SECURITY_MAC_BIBA_H */
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