Mac OS X 10.4 or earlier: Computer stops responding

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09-27-2008

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Mac OS X 10.4 or earlier: Computer stops responding

Learn how to get out of situations in which your computer may stop responding ("hang" or "freeze"). Troubleshooting beyond what is described in this article may be necessary to address any recurring issue. Important: Unsaved changes in your open applications will be lost. These steps apply to Mac OS X and Mac OS X Server. "Unresponsiveness" is often indicated by a spinning disc pointer and/or slow response time to input (or no response at all).

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LEARN ABOUT FREEBSD

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

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