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AU_NOTIFY(3) FreeBSD Library Functions Manual AU_NOTIFY(3)
NAME au_get_state, au_notify_initialize, au_notify_terminate - audit event notification
LIBRARY Basic Security Module Library (libbsm, -lbsm)
SYNOPSIS #include <bsm/libbsm.h>
int au_get_state(void);
uint32_t au_notify_initialize(void);
int au_notify_terminate(void);
DESCRIPTION The au_notify audit notification API tracks audit state in a form permitting efficient update, avoiding frequent system calls to check the kernel audit state. It is implemented only for Darwin/Mac OS X.
The au_get_state() function provides a lightweight way to check whether or not auditing is enabled. If a client wants to use this function to determine whether an entire series of audit calls should be made -- as in the common case of a caller building a set of tokens, then writing them -- it should cache the audit status in a local variable. This function always returns the current state of auditing. If audit notification has not already been initialized by calling au_notify_initialize() it will be automatically initialized on the first call of this function.
The au_notify_initialize() function initializes audit notification.
The au_notify_terminate() function cancels audit notification and frees the resources associated with it. Responsible code that no longer needs to use au_get_state() should call this function.
RETURN VALUES If no error occurred the au_get_state() function returns AUC_NOAUDIT if auditing is disabled or suspended, and AUC_AUDITING if auditing is enabled and active. Otherwise, the function can return any of the errno values defined for setaudit(2), or AU_UNIMPL if audit does not appear to be supported by the system.
The au_notify_initialize() function returns 0 on success, AU_UNIMPL if audit does not appear to be supported by the system, or one of the status codes defined in <notify.h> on Mac OS X to indicate the error.
The au_notify_terminate() function returns 0 on success, or -1 on failure.
SEE ALSO libbsm(3), notify(3) (Mac OS X)
HISTORY
The Basic Security Module (BSM) interface to audit records and audit event stream format were defined by Sun Microsystems.
FreeBSD 14.0-RELEASE-p6 July 29, 2015 FreeBSD 14.0-RELEASE-p6