NAME
mac_is_present —
report whether the running system has
MAC support
LIBRARY
library “libc”
SYNOPSIS
#include
<sys/mac.h>
int
mac_is_present(const
char *policyname);
DESCRIPTION
Themac_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.