xref: /freebsd/lib/libc/posix1e/mac_free.3 (revision 71fe318b852b8dfb3e799cb12ef184750f7f8eac)
1.\" Copyright (c) 2001, 2002 Networks Associates Technology, Inc.
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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
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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