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Manual Pages  — MAC_FREE

NAME

mac_free – free MAC label

CONTENTS

LIBRARY

Standard C Library (libc, -lc)

SYNOPSIS

#include <sys/mac.h>

int
mac_free(mac_t label);

DESCRIPTION

The mac_free() function frees the storage allocated to contain a mac_t.

RETURN VALUES

The mac_free() function always returns 0. WARNING: see the notes in the BUGS section regarding the use of this function.

SEE ALSO

mac(3), mac_get(3), mac_prepare(3), mac_set(3), mac_text(3), posix1e(3), mac(4), mac(9)

STANDARDS

POSIX.1e is described in IEEE POSIX.1e draft 17.

HISTORY

Support for Mandatory Access Control was introduced in FreeBSD 5.0 as part of the TrustedBSD Project.

BUGS

POSIX.1e specifies that mac_free() will be used to free text strings created using mac_to_text(3). Because mac_t is a complex structure in the TrustedBSD implementation, mac_free() is specific to mac_3, and must not be used to free the character strings returned from mac_to_text(). Doing so may result in undefined behavior.
MAC_FREE (3) September 21, 2023
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