audit_internal.h revision 162508
1/* 2 * Copyright (c) 2005 Apple Computer, Inc. 3 * Copyright (c) 2005 SPARTA, Inc. 4 * All rights reserved. 5 * 6 * This code was developed in part by Robert N. M. Watson, Senior Principal 7 * Scientist, SPARTA, Inc. 8 * 9 * @APPLE_BSD_LICENSE_HEADER_START@ 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of 21 * its contributors may be used to endorse or promote products derived 22 * from this software without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY 25 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 26 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 27 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY 28 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 29 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 30 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 31 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 32 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 33 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 34 * 35 * @APPLE_BSD_LICENSE_HEADER_END@ 36 * 37 * $P4: //depot/projects/trustedbsd/audit3/sys/bsm/audit_internal.h#14 $ 38 * $FreeBSD: head/sys/bsm/audit_internal.h 162508 2006-09-21 07:27:02Z rwatson $ 39 */ 40 41#ifndef _AUDIT_INTERNAL_H 42#define _AUDIT_INTERNAL_H 43 44#if defined(__linux__) && !defined(__unused) 45#define __unused 46#endif 47 48/* 49 * audit_internal.h contains private interfaces that are shared by user space 50 * and the kernel for the purposes of assembling audit records. Applications 51 * should not include this file or use the APIs found within, or it may be 52 * broken with future releases of OpenBSM, which may delete, modify, or 53 * otherwise break these interfaces or the assumptions they rely on. 54 */ 55struct au_token { 56 u_char *t_data; 57 size_t len; 58 TAILQ_ENTRY(au_token) tokens; 59}; 60 61struct au_record { 62 char used; /* Record currently in use? */ 63 int desc; /* Descriptor for record. */ 64 TAILQ_HEAD(, au_token) token_q; /* Queue of BSM tokens. */ 65 u_char *data; 66 size_t len; 67 LIST_ENTRY(au_record) au_rec_q; 68}; 69typedef struct au_record au_record_t; 70 71 72/* 73 * We could determined the header and trailer sizes by defining appropriate 74 * structures. We hold off that approach until we have a consistent way of 75 * using structures for all tokens. This is not straightforward since these 76 * token structures may contain pointers of whose contents we do not know the 77 * size (e.g text tokens). 78 */ 79#define AUDIT_HEADER_SIZE 18 80#define AUDIT_TRAILER_SIZE 7 81 82/* 83 * BSM token streams store fields in big endian byte order, so as to be 84 * portable; when encoding and decoding, we must convert byte orders for 85 * typed values. 86 */ 87#define ADD_U_CHAR(loc, val) \ 88 do { \ 89 *(loc) = (val); \ 90 (loc) += sizeof(u_char); \ 91 } while(0) 92 93 94#define ADD_U_INT16(loc, val) \ 95 do { \ 96 be16enc((loc), (val)); \ 97 (loc) += sizeof(u_int16_t); \ 98 } while(0) 99 100#define ADD_U_INT32(loc, val) \ 101 do { \ 102 be32enc((loc), (val)); \ 103 (loc) += sizeof(u_int32_t); \ 104 } while(0) 105 106#define ADD_U_INT64(loc, val) \ 107 do { \ 108 be64enc((loc), (val)); \ 109 (loc) += sizeof(u_int64_t); \ 110 } while(0) 111 112#define ADD_MEM(loc, data, size) \ 113 do { \ 114 memcpy((loc), (data), (size)); \ 115 (loc) += size; \ 116 } while(0) 117 118#define ADD_STRING(loc, data, size) ADD_MEM(loc, data, size) 119 120#endif /* !_AUDIT_INTERNAL_H_ */ 121