FreeBSD/Linux Kernel Cross Reference
sys/security/mac_lomac/mac_lomac.h

     /*-
      * Copyright (c) 1999-2002 Robert N. M. Watson
      * Copyright (c) 2001-2002 Networks Associates Technology, Inc.
      * All rights reserved.
      *
      * This software was developed by Robert Watson for the TrustedBSD Project.
      *
      * This software was developed for the FreeBSD Project in part by NAI Labs,
      * the Security Research Division of Network Associates, Inc. under
     * DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the DARPA
     * CHATS research program.
     *
     * Redistribution and use in source and binary forms, with or without
     * modification, are permitted provided that the following conditions
     * are met:
     * 1. Redistributions of source code must retain the above copyright
     *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     *
     * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
     * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
     * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     * SUCH DAMAGE.
     *
     * $FreeBSD$
     */
    /*
     * Definitions for the TrustedBSD LOMAC integrity policy module.
     */
    #ifndef _SYS_SECURITY_MAC_LOMAC_H
    #define _SYS_SECURITY_MAC_LOMAC_H
    
    #define MAC_LOMAC_EXTATTR_NAMESPACE     EXTATTR_NAMESPACE_SYSTEM
    #define MAC_LOMAC_EXTATTR_NAME          "mac_lomac"
    
    #define MAC_LOMAC_LABEL_NAME            "lomac"
    
    #define MAC_LOMAC_FLAG_SINGLE   0x00000001      /* ml_single initialized */
    #define MAC_LOMAC_FLAG_RANGE    0x00000002      /* ml_range* initialized */
    #define MAC_LOMAC_FLAG_AUX      0x00000004      /* ml_auxsingle initialized */
    #define MAC_LOMAC_FLAGS_BOTH    (MAC_LOMAC_FLAG_SINGLE | MAC_LOMAC_FLAG_RANGE)
    #define MAC_LOMAC_FLAG_UPDATE   0x00000008      /* must demote this process */
    
    #define MAC_LOMAC_TYPE_UNDEF    0       /* Undefined */
    #define MAC_LOMAC_TYPE_GRADE    1       /* Hierarchal grade with mb_grade. */
    #define MAC_LOMAC_TYPE_LOW      2       /* Dominated by any
                                             * MAC_LOMAC_TYPE_LABEL. */
    #define MAC_LOMAC_TYPE_HIGH     3       /* Dominates any
                                             * MAC_LOMAC_TYPE_LABEL. */
    #define MAC_LOMAC_TYPE_EQUAL    4       /* Equivilent to any
                                             * MAC_LOMAC_TYPE_LABEL. */
    
    /*
     * Structures and constants associated with a LOMAC Integrity policy.
     * mac_lomac represents a LOMAC label, with mb_type determining its properties,
     * and mb_grade represents the hierarchal grade if valid for the current
     * mb_type.
     */
    
    struct mac_lomac_element {
            u_short mle_type;
            u_short mle_grade;
    };
    
    /*
     * LOMAC labels start with two components: a single label, and a label
     * range.  Depending on the context, one or both may be used; the ml_flags
     * field permits the provider to indicate what fields are intended for
     * use.  The auxiliary label works the same way, but is only valid on
     * filesystem objects to provide inheritance semantics on directories
     * and "non-demoting" execution on executable files.
     */
    struct mac_lomac {
            int                             ml_flags;
            struct mac_lomac_element        ml_single;
            struct mac_lomac_element        ml_rangelow, ml_rangehigh;
            struct mac_lomac_element        ml_auxsingle;
    };
    
    #endif /* !_SYS_SECURITY_MAC_LOMAC_H */

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