MAC_FREE(3)            FreeBSD Library Functions Manual            MAC_FREE(3)

NAME

     mac_free - free MAC label

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_t, and must
     not be used to free the character strings returned from mac_to_text().
     Doing so may result in undefined behavior.

FreeBSD 15.1-STABLE-HBSD       October 26, 2025                    MAC_FREE(3)