MAC_IS_PRESENT_NP(3)

NAME
mac_is_present_np - report whether the running system has MAC support

LIBRARY
libc

SYNOPSIS
#include <sys/mac.h>
int
mac_is_present(const char *policyname);

DESCRIPTION
The mac_is_present_np() 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.