1.\" Copyright (c) 2002 Networks Associates Technology, Inc. 2.\" All rights reserved. 3.\" 4.\" This software was developed for the FreeBSD Project by Chris 5.\" Costello at Safeport Network Services and NAI Labs, the Security 6.\" Research Division of Network Associates, Inc. under DARPA/SPAWAR 7.\" contract N66001-01-C-8035 ("CBOSS"), as part of the DARPA CHATS 8.\" 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.\" 3. The name of the author may not be used to endorse or promote 19.\" products derived from this software without specific prior written 20.\" permission. 21.\" 22.\" THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND 23.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE 26.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32.\" SUCH DAMAGE. 33.\" 34.\" $FreeBSD$ 35.Dd January 9, 2002 36.Dt MAC_IS_PRESENT_NP 3 37.Sh NAME 38.Nm mac_is_present_np 39.Nd report whether the running system has MAC support 40.Sh SYNOPSIS 41.In sys/mac.h 42.Ft int 43.Fn mac_is_present "const char *policyname" 44.Sh DESCRIPTION 45The 46.Fn mac_is_present_np 47function determines whether the currently-running kernel supports MAC for 48a given policy or not. 49If 50.Fa policyname 51is non- 52.Ns Dv NULL , 53the presence of the named policy 54(e.g. 55.Dq biba , 56.Dq mls , 57.Dq te ) 58is checked, otherwise the presence of any MAC policies at all is checked. 59.Sh RETURN VALUES 60If the system supports the given MAC policy, the value 1 is returned. 61If the specified MAC policy is not supported, the value 0 is returned. 62If an error occurs, the value -1 is returned. 63.Sh ERRORS 64.Bl -tag -width Er 65.It Bq Er EINVAL 66The value of 67.Fa policyname 68is not valid. 69.It Bq Er ENOMEM 70Insufficient memory was available to allocate internal storage. 71.El 72.Sh SEE ALSO 73.Xr mac 3 74