The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/bsm/audit_internal.h

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    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_ */

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