Manual Pages  — MAC_IS_PRESENT

mac_is_present – report whether the running system has MAC support

LIBRARY SYNOPSIS DESCRIPTION RETURN VALUES ERRORS SEE ALSO HISTORY

Standard C Library (libc, -lc)

#include <sys/mac.h>

int
mac_is_present(const char *policyname);

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.amp; "biba", "mls", "te") is checked, otherwise the presence of any MAC policies at all is checked.

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.

[EINVAL]
	The value of policyname is not valid.
[ENOMEM]
	Insufficient memory was available to allocate internal storage.

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