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.\" Copyright (c) 2002, 2003 Networks Associates Technology, Inc.
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2003-01-15 03:05:21 +00:00
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.\" All rights reserved.
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2003-02-24 22:53:26 +00:00
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.\"
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2003-01-15 03:05:21 +00:00
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.\" This software was developed for the FreeBSD Project by Chris
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.\" Costello at Safeport Network Services and Network Associates Labs,
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.\" the Security Research Division of Network Associates, Inc. under
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.\" DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the
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.\" 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 August 22, 2003
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.Os
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.Dt MAC_PREPARE 3
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.Sh NAME
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2004-07-03 22:30:10 +00:00
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.Nm mac_prepare , mac_prepare_type , mac_prepare_file_label ,
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.Nm mac_prepare_ifnet_label , mac_prepare_process_label
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.Nd allocate appropriate storage for
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.Vt mac_t
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.Sh SYNOPSIS
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.In sys/mac.h
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.Ft int
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.Fn mac_prepare "mac_t *mac" "const char *elements"
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.Ft int
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.Fn mac_prepare_type "mac_t *mac" "const char *name"
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.Ft int
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.Fn mac_prepare_file_label "mac_t *mac"
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.Ft int
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.Fn mac_prepare_ifnet_label "mac_t *mac"
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.Ft int
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.Fn mac_prepare_process_label "mac_t *mac"
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.Sh DESCRIPTION
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The
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.Nm
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family of functions allocates the appropriate amount of storage and initializes
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.Fa *mac
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for use by
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.Xr mac_get 3 .
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When the resulting label is passed into the
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.Xr mac_get 3
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functions, the kernel will attempt to fill in the label elements specified
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when the label was prepared.
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Elements are specified in a nul-terminate string, using commas to
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delimit fields.
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Element names may be prefixed with the
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.Dv ?
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character to indicate that a failure by the kernel to retrieve that
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element should not be considered fatal.
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.Pp
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The
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.Fn mac_prepare
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function accepts a list of policy names as a parameter, and allocates the
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storage to fit those label elements accordingly.
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The remaining functions in the family make use of system defaults defined
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in
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.Xr mac.conf 5
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instead of an explicit
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.Va elements
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argument, deriving the default from the specified object type.
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.Pp
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.Fn mac_prepare_type
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allocates the storage to fit an object label of the type specified by
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the
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.Va name
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argument.
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The
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.Fn mac_prepare_file_label ,
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.Fn mac_prepare_ifnet_label ,
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and
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.Fn mac_prepare_process_label
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functions are equivilent to invocations of
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.Fn mac_prepare_type
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with arguments of
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.Qq file ,
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.Qq ifnet ,
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and
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.Qq process
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respectively.
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.Sh RETURN VALUES
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.Rv -std
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.Sh SEE ALSO
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.Xr mac 3 ,
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.Xr mac_free 3 ,
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.Xr mac_get 3 ,
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.Xr mac_is_present_np 3 ,
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.Xr mac_set 3 ,
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.Xr mac 4 ,
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.Xr mac.conf 5 ,
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.Xr maclabel 7
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.Sh STANDARDS
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POSIX.1e is described in IEEE POSIX.1e draft 17.
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Discussion of the draft
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continues on the cross-platform POSIX.1e implementation mailing list.
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To join this list, see the
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.Fx
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POSIX.1e implementation page
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for more information.
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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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Support for generic object types first appeared in
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.Fx 5.2 .
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