1 /*- 2 * Copyright (c) 1999-2002 Robert N. M. Watson 3 * Copyright (c) 2001-2004 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 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. 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 * $FreeBSD$ 35 */ 36 /* 37 * Definitions for the TrustedBSD Biba integrity policy module. 38 */ 39 #ifndef _SYS_SECURITY_MAC_BIBA_H 40 #define _SYS_SECURITY_MAC_BIBA_H 41 42 #define MAC_BIBA_EXTATTR_NAMESPACE EXTATTR_NAMESPACE_SYSTEM 43 #define MAC_BIBA_EXTATTR_NAME "mac_biba" 44 45 #define MAC_BIBA_LABEL_NAME "biba" 46 47 #define MAC_BIBA_FLAG_EFFECTIVE 0x00000001 /* mb_effective initialized */ 48 #define MAC_BIBA_FLAG_RANGE 0x00000002 /* mb_range* initialized */ 49 #define MAC_BIBA_FLAGS_BOTH (MAC_BIBA_FLAG_EFFECTIVE | MAC_BIBA_FLAG_RANGE) 50 51 #define MAC_BIBA_TYPE_UNDEF 0 /* Undefined */ 52 #define MAC_BIBA_TYPE_GRADE 1 /* Hierarchal grade with mb_grade. */ 53 #define MAC_BIBA_TYPE_LOW 2 /* Dominated by any 54 * MAC_BIBA_TYPE_LABEL. */ 55 #define MAC_BIBA_TYPE_HIGH 3 /* Dominates any 56 * MAC_BIBA_TYPE_LABEL. */ 57 #define MAC_BIBA_TYPE_EQUAL 4 /* Equivalent to any 58 * MAC_BIBA_TYPE_LABEL. */ 59 60 /* 61 * Structures and constants associated with a Biba Integrity policy. 62 * mac_biba represents a Biba 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 67 #define MAC_BIBA_MAX_COMPARTMENTS 256 68 69 struct mac_biba_element { 70 u_short mbe_type; 71 u_short mbe_grade; 72 u_char mbe_compartments[MAC_BIBA_MAX_COMPARTMENTS >> 3]; 73 }; 74 75 /* 76 * Biba labels consist of two components: an effective label, and a label 77 * range. Depending on the context, one or both may be used; the mb_flags 78 * field permits the provider to indicate what fields are intended for 79 * use. 80 */ 81 struct mac_biba { 82 int mb_flags; 83 struct mac_biba_element mb_effective; 84 struct mac_biba_element mb_rangelow, mb_rangehigh; 85 }; 86 87 /* 88 * Biba compartments bit test/set macros. 89 * The range is 1 to MAC_BIBA_MAX_COMPARTMENTS. 90 */ 91 #define MAC_BIBA_BIT_TEST(b, w) \ 92 ((w)[(((b) - 1) >> 3)] & (1 << (((b) - 1) & 7))) 93 #define MAC_BIBA_BIT_SET(b, w) \ 94 ((w)[(((b) - 1) >> 3)] |= (1 << (((b) - 1) & 7))) 95 #define MAC_BIBA_BIT_SET_EMPTY(set) biba_bit_set_empty(set) 96 97 #endif /* !_SYS_SECURITY_MAC_BIBA_H */ 98