1.\" Copyright (c) 2001, 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 December 21, 2001 36.Dt MAC_FREE 3 37.Os 38.Sh NAME 39.Nm mac_free 40.Nd free MAC label 41.Sh LIBRARY 42.Lb libc 43.Sh SYNOPSIS 44.In sys/mac.h 45.Ft int 46.Fn mac_free "mac_t label" 47.Sh DESCRIPTION 48The 49.Fn mac_free 50function frees the storage allocated to contain a 51.Vt mac_t . 52.Sh RETURN VALUES 53The 54.Fn mac_free 55function always returns 0. 56WARNING: see the notes in the BUGS section regarding the use of this 57function. 58.Sh SEE ALSO 59.Xr mac 3 , 60.Xr mac_get 3 , 61.Xr mac_set 3 , 62.Xr mac_text 3 63.Sh STANDARDS 64POSIX.1e is described in IEEE POSIX.1e draft 17. 65Discussion of the draft 66continues on the cross-platform POSIX.1e implementation mailing list. 67To join this list, see the 68.Fx 69POSIX.1e implementation page 70for more information. 71.Sh BUGS 72POSIX.1e specifies that 73.Fn mac_free 74will be used to free text strings created using 75.Xr mac_to_text 3 . 76Because 77.Vt mac_t 78is a complex structure in the TrustedBSD implementation, 79.Fn mac_free 80is specific to that type, and must not be used to free the character 81strings returned from 82.Fn mac_to_text . 83Doing so may result in undefined behavior, 84including application failure. 85