.\" Copyright (c) 2002 Networks Associates Technology, Inc.
.\" All rights reserved.
.\"
.\" This software was developed for the FreeBSD Project by Chris Costello
.\" at Safeport Network Services and Network Associates Laboratories, 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:
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.\"    notice, this list of conditions and the following disclaimer.
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.\"    notice, this list of conditions and the following disclaimer in the
.\"    documentation and/or other materials provided with the distribution.
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.Dd July 25, 2015
.Dt MAC_PARTITION 4
.Os
.Sh NAME
.Nm mac_partition
.Nd "process partition policy"
.Sh SYNOPSIS
To compile the process partition policy into your kernel,
place the following lines in your kernel
configuration file:
.Bd -ragged -offset indent
.Cd "options MAC"
.Cd "options MAC_PARTITION"
.Ed
.Pp
Alternately, to load the process partition module at boot time,
place the following line in your kernel configuration file:
.Bd -ragged -offset indent
.Cd "options MAC"
.Ed
.Pp
and in
.Xr loader.conf 5 :
.Bd -literal -offset indent
mac_partition_load="YES"
.Ed
.Sh DESCRIPTION
The
.Nm
policy module implements a process partition policy,
which allows administrators to place running processes into
.Dq partitions ,
based on their numeric process partition
(specified in the process's MAC label).
Processes with a specified partition can only see processes that are in the
same partition.
If no partition is specified for a process, it can see all other processes
in the system
(subject to other MAC policy restrictions not defined in this man page).
No provisions for placing processes into multiple partitions are available.
.Ss Label Format
Partition labels take on the following format:
.Pp
.Sm off
.Dl Li partition / Ar value
.Sm on
.Pp
Where
.Ar value
can be any integer value or
.Dq Li none .
For example:
.Bd -literal -offset indent
partition/1
partition/20
partition/none
.Ed
.Sh SEE ALSO
.Xr mac 4 ,
.Xr mac_biba 4 ,
.Xr mac_bsdextended 4 ,
.Xr mac_ifoff 4 ,
.Xr mac_lomac 4 ,
.Xr mac_mls 4 ,
.Xr mac_none 4 ,
.Xr mac_portacl 4 ,
.Xr mac_seeotheruids 4 ,
.Xr mac_test 4 ,
.Xr maclabel 7 ,
.Xr mac 9
.Sh HISTORY
The
.Nm
policy module first appeared in
.Fx 5.0
and was developed by the
.Tn TrustedBSD
Project.
.Sh AUTHORS
This software was contributed to the
.Fx
Project by Network Associates Labs,
the Security Research Division of Network Associates
Inc.
under DARPA/SPAWAR contract N66001-01-C-8035
.Pq Dq CBOSS ,
as part of the DARPA CHATS research program.
.Sh BUGS
While the MAC Framework design is intended to support the containment of
the root user, not all attack channels are currently protected by entry
point checks.
As such, MAC Framework policies should not be relied on, in isolation,
to protect against a malicious privileged user.