1.\" Copyright (c) 2002 Networks Associates Technology, Inc. 2.\" All rights reserved. 3.\" 4.\" This software was developed for the FreeBSD Project by Chris Costello 5.\" at Safeport Network Services and Network Associates Laboratories, the 6.\" Security Research Division of Network Associates, Inc. under 7.\" DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the 8.\" DARPA CHATS research program. 9.\" 10.\" Redistribution and use in source and binary forms, with or without 11.\" modification, are permitted provided that the following conditions 12.\" are met: 13.\" 1. Redistributions of source code must retain the above copyright 14.\" notice, this list of conditions and the following disclaimer. 15.\" 2. Redistributions in binary form must reproduce the above copyright 16.\" notice, this list of conditions and the following disclaimer in the 17.\" documentation and/or other materials provided with the distribution. 18.\" 19.\" THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND 20.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE 23.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29.\" SUCH DAMAGE. 30.\" 31.\" $FreeBSD$ 32.\" 33.Dd December 1, 2002 34.Os 35.Dt MAC_NONE 4 36.Sh NAME 37.Nm mac_none 38.Nd "sample MAC policy module" 39.Sh SYNOPSIS 40To compile the sample policy 41into your kernel, place the following lines in your kernel 42configuration file: 43.Bd -ragged -offset indent 44.Cd "options MAC" 45.Cd "options MAC_NONE" 46.Ed 47.Pp 48Alternately, to load the sample module at boot time, place the following line 49in your kernel configuration file: 50.Bd -ragged -offset indent 51.Cd "options MAC" 52.Ed 53.Pp 54and in 55.Xr loader.conf 5 : 56.Bd -literal -offset indent 57mac_none_load="YES" 58.Ed 59.Sh DESCRIPTION 60The 61.Nm 62policy module implements a sample MAC policy that has no effect on 63access control in the system. 64Each MAC entry point is a 65.Dq no-op . 66.Ss Label Format 67No labels are defined for 68.Nm . 69.Sh SEE ALSO 70.Xr mac 4 , 71.Xr mac_biba 4 , 72.Xr mac_bsdextended 4 , 73.Xr mac_ifoff 4 , 74.Xr mac_lomac 4 , 75.Xr mac_mls 4 , 76.Xr mac_partition 4 , 77.Xr mac_portacl 4 , 78.Xr mac_seeotheruids 4 , 79.Xr mac_test 4 , 80.Xr mac 9 81.Sh HISTORY 82The 83.Nm 84policy module first appeared in 85.Fx 5.0 86and was developed by the 87.Tn TrustedBSD 88Project. 89.Sh AUTHORS 90This software was contributed to the 91.Fx 92Project by Network Associates Labs, 93the Security Research Division of Network Associates 94Inc. under DARPA/SPAWAR contract N66001-01-C-8035 95.Pq Dq CBOSS , 96as part of the DARPA CHATS research program. 97.Sh BUGS 98See 99.Xr mac 9 100concerning appropriateness for production use. 101The 102.Tn TrustedBSD 103MAC Framework is considered experimental in 104.Fx . 105.Pp 106While the MAC Framework design is intended to support the containment of 107the root user, not all attack channels are currently protected by entry 108point checks. 109As such, MAC Framework policies should not be relied on, in isolation, 110to protect against a malicious privileged user. 111