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/security/audit/audit_bsm_socket_type.c

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    1 /*-
    2  * Copyright (c) 2008 Apple Inc.
    3  * All rights reserved.
    4  *
    5  * Redistribution and use in source and binary forms, with or without
    6  * modification, are permitted provided that the following conditions
    7  * are met:
    8  * 1.  Redistributions of source code must retain the above copyright
    9  *     notice, this list of conditions and the following disclaimer.
   10  * 2.  Redistributions in binary form must reproduce the above copyright
   11  *     notice, this list of conditions and the following disclaimer in the
   12  *     documentation and/or other materials provided with the distribution.
   13  * 3.  Neither the name of Apple Inc. ("Apple") nor the names of
   14  *     its contributors may be used to endorse or promote products derived
   15  *     from this software without specific prior written permission.
   16  *
   17  * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND
   18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   20  * ARE DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR
   21  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
   25  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
   26  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   27  * POSSIBILITY OF SUCH DAMAGE. 
   28  *
   29  * P4: //depot/projects/trustedbsd/openbsm/libbsm/bsm_socket_type.c#1
   30  */
   31 
   32 #include <sys/cdefs.h>
   33 __FBSDID("$FreeBSD$");
   34 
   35 #include <sys/param.h>
   36 #include <sys/socket.h>
   37 
   38 #include <security/audit/audit.h>
   39 
   40 #include <bsm/audit_record.h>
   41 #include <bsm/audit_socket_type.h>
   42 
   43 struct bsm_socket_type {
   44         u_short bst_bsm_socket_type;
   45         int     bst_local_socket_type;
   46 };
   47 
   48 #define ST_NO_LOCAL_MAPPING     -600
   49 
   50 static const struct bsm_socket_type bsm_socket_types[] = {
   51         { BSM_SOCK_DGRAM, SOCK_DGRAM },
   52         { BSM_SOCK_STREAM, SOCK_STREAM },
   53         { BSM_SOCK_RAW, SOCK_RAW },
   54         { BSM_SOCK_RDM, SOCK_RDM },
   55         { BSM_SOCK_SEQPACKET, SOCK_SEQPACKET },
   56 };
   57 static const int bsm_socket_types_count = sizeof(bsm_socket_types) /
   58             sizeof(bsm_socket_types[0]);
   59 
   60 static const struct bsm_socket_type *
   61 bsm_lookup_local_socket_type(int local_socket_type)
   62 {
   63         int i;
   64 
   65         for (i = 0; i < bsm_socket_types_count; i++) {
   66                 if (bsm_socket_types[i].bst_local_socket_type ==
   67                     local_socket_type)
   68                         return (&bsm_socket_types[i]);
   69         }
   70         return (NULL);
   71 }
   72 
   73 u_short
   74 au_socket_type_to_bsm(int local_socket_type)
   75 {
   76         const struct bsm_socket_type *bstp;
   77 
   78         bstp = bsm_lookup_local_socket_type(local_socket_type);
   79         if (bstp == NULL)
   80                 return (BSM_SOCK_UNKNOWN);
   81         return (bstp->bst_bsm_socket_type);
   82 }
   83 
   84 static const struct bsm_socket_type *
   85 bsm_lookup_bsm_socket_type(u_short bsm_socket_type)
   86 {
   87         int i;
   88 
   89         for (i = 0; i < bsm_socket_types_count; i++) {
   90                 if (bsm_socket_types[i].bst_bsm_socket_type ==
   91                     bsm_socket_type)
   92                         return (&bsm_socket_types[i]);
   93         }
   94         return (NULL);
   95 }
   96 
   97 int
   98 au_bsm_to_socket_type(u_short bsm_socket_type, int *local_socket_typep)
   99 {
  100         const struct bsm_socket_type *bstp;
  101 
  102         bstp = bsm_lookup_bsm_socket_type(bsm_socket_type);
  103         if (bstp == NULL || bstp->bst_local_socket_type)
  104                 return (-1);
  105         *local_socket_typep = bstp->bst_local_socket_type;
  106         return (0);
  107 }

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