Man

Command Section
MAC_IS_PRESENT(3)      FreeBSD Library Functions Manual      MAC_IS_PRESENT(3)

NAME
     mac_is_present - report whether the running system has MAC support

LIBRARY
     Standard C Library (libc, -lc)

SYNOPSIS
     #include <sys/mac.h>

     int
     mac_is_present(const char *policyname);

DESCRIPTION
     The mac_is_present() function determines whether the currently-running
     kernel supports MAC for a given policy or not.  If policyname is
     non-NULL, the presence of the named policy (e.g. ``biba'', ``mls'',
     ``te'') is checked, otherwise the presence of any MAC policies at all is
     checked.

RETURN VALUES
     If the system supports the given MAC policy, the value 1 is returned.  If
     the specified MAC policy is not supported, the value 0 is returned.  If
     an error occurs, the value -1 is returned.

ERRORS
     [EINVAL]           The value of policyname is not valid.

     [ENOMEM]           Insufficient memory was available to allocate internal
                        storage.

SEE ALSO
     mac(3), mac_free(3), mac_get(3), mac_prepare(3), mac_set(3), mac_text(3),
     mac(4), mac(9)

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

FreeBSD 11.1-RELEASE-p4          July 7, 2006          FreeBSD 11.1-RELEASE-p4
Command Section