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 con

tain 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),

mac(4),
mac(9)

STANDARDS

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

of the draft
continues on the cross-platform POSIX.1e implementation

mailing list. To
join this list, see the FreeBSD POSIX.1e implementation page

for more
information.

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 that

type, and must
not be used to free the character strings returned from

mac_to_text().
Doing so may result in undefined behavior, including appli

cation failure.

BSD December 21, 2001

BSD