1.\" Copyright (c) 2001 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.\" 19.\" THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND 20.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE 23.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29.\" SUCH DAMAGE. 30.\" 31.Dd October 26, 2025 32.Dt MAC_TEXT 3 33.Os 34.Sh NAME 35.Nm mac_from_text , 36.Nm mac_to_text 37.Nd convert MAC label to/from text representation 38.Sh LIBRARY 39.Lb libc 40.Sh SYNOPSIS 41.In sys/mac.h 42.Ft int 43.Fn mac_from_text "mac_t *mac" "const char *text" 44.Ft int 45.Fn mac_to_text "mac_t label" "char **text" 46.Sh DESCRIPTION 47The 48.Fn mac_from_text 49function converts the text representation of a label 50into the internal policy label format 51.Pq Vt mac_t 52and places it in 53.Fa *mac , 54which must later be freed with 55.Xr mac_free 3 . 56.Pp 57The 58.Fn mac_to_text 59function allocates storage for 60.Fa *text , 61which will be set to the text representation of 62.Fa label 63and must later be freed with 64.Xr free 3 . 65.Pp 66Refer to 67.Xr maclabel 7 68for the MAC label format. 69.Sh RETURN VALUES 70.Rv -std mac_from_text mac_to_text 71.Sh COMPATIBILITY 72POSIX.1e does not define 73a format for text representations 74of MAC labels. 75.Pp 76POSIX.1e requires that text strings allocated using 77.Fn mac_to_text 78be freed using 79.Xr mac_free 3 ; 80in the 81.Fx 82implementation, they must be freed using 83.Xr free 3 , 84as 85.Xr mac_free 3 86is used only to free memory used for type 87.Vt mac_t . 88.Sh ERRORS 89.Bl -tag -width Er 90.It Bq Er ENOMEM 91Insufficient memory was available 92to allocate internal storage. 93.El 94.Sh SEE ALSO 95.Xr free 3 , 96.Xr mac 3 , 97.Xr mac_get 3 , 98.Xr mac_is_present 3 , 99.Xr mac_prepare 3 , 100.Xr mac_set 3 , 101.Xr posix1e 3 , 102.Xr mac 4 , 103.Xr maclabel 7 104.Sh STANDARDS 105POSIX.1e is described in IEEE POSIX.1e draft 17. 106.Sh HISTORY 107Support for Mandatory Access Control was introduced in 108.Fx 5.0 109as part of the 110.Tn TrustedBSD 111Project. 112