208a8b9532
to no longer claim they are experimental. Reviewed by: rwatson@, wblock@ MFC after: 1 week Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D2985
113 lines
4.0 KiB
Groff
113 lines
4.0 KiB
Groff
.\" Copyright (c) 2003 Networks Associates Technology, Inc.
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.\" All rights reserved.
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.\"
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.\" This software was developed for the FreeBSD Project in part by Network
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.\" Associates Laboratories, the Security Research Division of Network
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.\" Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"),
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.\" as part of the DARPA CHATS research program.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" $FreeBSD$
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.\"
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.Dd July 25, 2015
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.Dt MAC.CONF 5
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.Os
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.Sh NAME
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.Nm mac.conf
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.Nd format of the MAC library configuration file
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.Sh DESCRIPTION
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The
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.Nm
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file configures the default label elements to be used by policy-agnostic
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applications that operate on MAC labels.
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A file contains a series of default label sets specified by object class,
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in addition to blank lines and comments preceded by a
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.Ql #
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symbol.
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.Pp
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Currently, the implementation supports two syntax styles for label
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element declaration.
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The old (deprecated) syntax consists of a
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single line with two fields separated by white space: the object
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class name, and a list of label elements as used by the
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.Xr mac_prepare 3
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library calls prior to an application invocation of a function from
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.Xr mac_get 3 .
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.Pp
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The newer more preferred syntax consists of three fields separated by
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white space: the label group, object class name and a list of
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label elements.
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.Pp
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Label element names may optionally begin with a
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.Ql \&?
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symbol to indicate that a failure to retrieve the label element for
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an object should be silently ignored, and improves usability if the
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set of MAC policies may change over time.
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.Sh FILES
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.Bl -tag -width ".Pa /etc/mac.conf" -compact
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.It Pa /etc/mac.conf
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MAC library configuration file.
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.El
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.Sh EXAMPLES
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The following example configures user applications to operate with
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four MAC policies:
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.Xr mac_biba 4 ,
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.Xr mac_mls 4 ,
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SEBSD,
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and
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.Xr mac_partition 4 .
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.Bd -literal -offset indent
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#
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# Default label set to be used by simple MAC applications
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default_labels file ?biba,?lomac,?mls,?sebsd
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default_labels ifnet ?biba,?lomac,?mls,?sebsd
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default_labels process ?biba,?lomac,?mls,?partition,?sebsd
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default_labels socket ?biba,?lomac,?mls
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#
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# Deprecated (old) syntax
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default_file_labels ?biba,?mls,?sebsd
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default_ifnet_labels ?biba,?mls,?sebsd
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default_process_labels ?biba,?mls,partition,?sebsd
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.Ed
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.Pp
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In this example, userland applications will attempt to retrieve Biba,
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MLS, and SEBSD labels for all object classes; for processes, they will
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additionally attempt to retrieve a Partition identifier.
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In all cases except the Partition identifier, failure to retrieve a
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label due to the respective policy not being present will be ignored.
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.Sh SEE ALSO
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.Xr mac 3 ,
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.Xr mac_get 3 ,
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.Xr mac_prepare 3 ,
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.Xr mac 4 ,
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.Xr mac 9
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.Sh HISTORY
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Support for Mandatory Access Control was introduced in
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.Fx 5.0
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as part of the
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.Tn TrustedBSD
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Project.
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