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