051bb54bd3
necessary nowadays, but is documented as "required", and may become so again in the future. Approved by: re
78 lines
2.8 KiB
Groff
78 lines
2.8 KiB
Groff
.\" Copyright (c) 2002 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 by Chris
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.\" Costello at Safeport Network Services and NAI Labs, the Security
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.\" Research Division of Network Associates, Inc. under DARPA/SPAWAR
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.\" contract N66001-01-C-8035 ("CBOSS"), as part of the DARPA CHATS
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.\" 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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.\" 3. The name of the author may not be used to endorse or promote
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.\" products derived from this software without specific prior written
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.\" permission.
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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 January 9, 2002
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.Dt MAC_IS_PRESENT_NP 3
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.Os
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.Sh NAME
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.Nm mac_is_present_np
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.Nd report whether the running system has MAC support
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.Sh LIBRARY
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.Lb libc
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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_is_present "const char *policyname"
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.Sh DESCRIPTION
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The
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.Fn mac_is_present_np
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function determines whether the currently-running kernel supports MAC for
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a given policy or not.
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If
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.Fa policyname
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is
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.No non- Ns Dv NULL ,
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the presence of the named policy
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(e.g.\&
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.Dq Li biba ,
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.Dq Li mls ,
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.Dq Li te )
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is checked, otherwise the presence of any MAC policies at all is checked.
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.Sh RETURN VALUES
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If the system supports the given MAC policy, the value 1 is returned.
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If the specified MAC policy is not supported, the value 0 is returned.
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If an error occurs, the value \-1 is returned.
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.Sh ERRORS
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.Bl -tag -width Er
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.It Bq Er EINVAL
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The value of
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.Fa policyname
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is not valid.
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.It Bq Er ENOMEM
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Insufficient memory was available to allocate internal storage.
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.El
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.Sh SEE ALSO
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.Xr mac 3
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