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/*-
* Copyright (c) 1999-2002 Robert N. M. Watson
* Copyright (c) 2001-2004 Networks Associates Technology, Inc.
* All rights reserved.
*
* This software was developed by Robert Watson for the TrustedBSD Project.
*
* This software was developed for the FreeBSD Project in part by Network
* Associates Laboratories, the Security Research Division of Network
* Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"),
* as part of the DARPA CHATS research program.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
/*
* Definitions for the TrustedBSD Biba integrity policy module.
*/
#ifndef _SYS_SECURITY_MAC_BIBA_H
#define _SYS_SECURITY_MAC_BIBA_H
#define MAC_BIBA_EXTATTR_NAMESPACE EXTATTR_NAMESPACE_SYSTEM
#define MAC_BIBA_EXTATTR_NAME "mac_biba"
#define MAC_BIBA_LABEL_NAME "biba"
#define MAC_BIBA_FLAG_EFFECTIVE 0x00000001 /* mb_effective initialized */
#define MAC_BIBA_FLAG_RANGE 0x00000002 /* mb_range* initialized */
#define MAC_BIBA_FLAGS_BOTH (MAC_BIBA_FLAG_EFFECTIVE | MAC_BIBA_FLAG_RANGE)
#define MAC_BIBA_TYPE_UNDEF 0 /* Undefined */
#define MAC_BIBA_TYPE_GRADE 1 /* Hierarchal grade with mb_grade. */
#define MAC_BIBA_TYPE_LOW 2 /* Dominated by any
* MAC_BIBA_TYPE_LABEL. */
#define MAC_BIBA_TYPE_HIGH 3 /* Dominates any
* MAC_BIBA_TYPE_LABEL. */
#define MAC_BIBA_TYPE_EQUAL 4 /* Equivilent to any
* MAC_BIBA_TYPE_LABEL. */
/*
* Structures and constants associated with a Biba Integrity policy.
* mac_biba represents a Biba label, with mb_type determining its properties,
* and mb_grade represents the hierarchal grade if valid for the current
* mb_type.
*/
#define MAC_BIBA_MAX_COMPARTMENTS 256
struct mac_biba_element {
u_short mbe_type;
u_short mbe_grade;
u_char mbe_compartments[MAC_BIBA_MAX_COMPARTMENTS >> 3];
};
/*
* Biba labels consist of two components: an effective label, and a label
* range. Depending on the context, one or both may be used; the mb_flags
* field permits the provider to indicate what fields are intended for
* use.
*/
struct mac_biba {
int mb_flags;
struct mac_biba_element mb_effective;
struct mac_biba_element mb_rangelow, mb_rangehigh;
};
/*
* Biba compartments bit test/set macros.
* The range is 1 to MAC_BIBA_MAX_COMPARTMENTS.
*/
#define MAC_BIBA_BIT_TEST(b, w) \
((w)[(((b) - 1) >> 3)] & (1 << (((b) - 1) & 7)))
#define MAC_BIBA_BIT_SET(b, w) \
((w)[(((b) - 1) >> 3)] |= (1 << (((b) - 1) & 7)))
#define MAC_BIBA_BIT_SET_EMPTY(set) biba_bit_set_empty(set)
#endif /* !_SYS_SECURITY_MAC_BIBA_H */
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