.\" Copyright (c) 2001 Networks Associates Technology, Inc.
.\" All rights reserved.
.\"
.\" This software was developed for the FreeBSD Project by Chris
.\" Costello at Safeport Network Services and NAI Labs, 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:
.\" 1. Redistributions of source code must retain the above copyright
.\"    notice, this list of conditions and the following disclaimer.
.\" 2. Redistributions in binary form must reproduce the above copyright
.\"    notice, this list of conditions and the following disclaimer in the
.\"    documentation and/or other materials provided with the distribution.
.\"
.\" THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\"
.\" $FreeBSD: head/lib/libc/posix1e/mac_text.3 196123 2009-08-12 10:46:48Z rwatson $
.\"
.Dd December 21, 2001
.Dt MAC_TEXT 3
.Os
.Sh NAME
.Nm mac_from_text ,
.Nm mac_to_text
.Nd convert MAC label to/from text representation
.Sh LIBRARY
.Lb libc
.Sh SYNOPSIS
.In sys/mac.h
.Ft int
.Fn mac_from_text "mac_t *mac" "const char *text"
.Ft int
.Fn mac_to_text "mac_t label" "char **text"
.Sh DESCRIPTION
The
.Fn mac_from_text
function converts the text representation of a label
into the internal policy label format
.Pq Vt mac_t
and places it in
.Fa *mac ,
which must later be freed with
.Xr free 3 .
.Pp
The
.Fn mac_to_text
function allocates storage for
.Fa *text ,
which will be set to the text representation of
.Fa label .
.Pp
Refer to
.Xr maclabel 7
for the MAC label format.
.Sh RETURN VALUES
.Rv -std mac_from_text mac_to_text
.Sh COMPATIBILITY
POSIX.1e does not define
a format for text representations
of MAC labels.
.Pp
POSIX.1e requires that text strings allocated using
.Fn mac_to_text
be freed using
.Xr mac_free 3 ;
in the
.Fx
implementation, they must be freed using
.Xr free 3 ,
as
.Xr mac_free 3
is used only to free memory used for type
.Vt mac_t .
.Sh ERRORS
.Bl -tag -width Er
.It Bq Er ENOMEM
Insufficient memory was available
to allocate internal storage.
.El
.Sh SEE ALSO
.Xr free 3 ,
.Xr mac 3 ,
.Xr mac_get 3 ,
.Xr mac_is_present 3 ,
.Xr mac_prepare 3 ,
.Xr mac_set 3 ,
.Xr posix1e 3 ,
.Xr mac 4 ,
.Xr maclabel 7
.Sh STANDARDS
POSIX.1e is described in IEEE POSIX.1e draft 17.
Discussion of the draft
continues on the cross-platform POSIX.1e implementation mailing list.
To join this list, see the
.Fx
POSIX.1e implementation page
for more information.
.Sh HISTORY
Support for Mandatory Access Control was introduced in
.Fx 5.0
as part of the
.Tn TrustedBSD
Project.