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mac_biba.c
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mac_biba.h
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Editing: mac_biba.h
/*- * 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 /* Equivalent 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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