freebsd man page for mac_is_present

MAC_IS_PRESENT(3)					   BSD 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.

BSD
								   July 7, 2006 							       BSD