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AUDITON(2)                  BSD System Calls Manual                 AUDITON(2)

NAME
     auditon -- configure the current audit parameters on the system

SYNOPSIS
     #include <bsm/audit.h>

     int
     auditon(int cmd, void * data, int length);

DESCRIPTION
     The auditon() function manipulates various audit parameters. The data
     argument points to the appropriate structure from the header file.
     Length is the size of the data parameter in bytes. It will typically be
     the sizeof the the structure.

PARAMETERS
     A_GETPOLICY        Get the current audit policy.  Data should point to a
                        long. The policy is the bitwise OR'ing of the appro-priate appropriate
                        priate flags from bsm/audit.h.  If AUDIT_AHLT is set,
                        the system will kernel panic if it cannot write to the
                        global audit trail.  If AUDIT_CNT is not set and the
                        system becomes low on space, audited events will block
                        until the low space condition is remedied.  Unaudited
                        events are unaffected. The other policy flags are not
                        implemented.

     A_SETPOLICY        Set the current audit policy.  Data should point to a
                        long specifying the desired audit policy, as described
                        in A_GETPOLICY.

     A_GETKMASK         Get the current value of the audit preselection mask
                        for non-attributable events.  Data should point to an
                        au_mask_t.  The field am_success specifies which
                        classes of successful audit events are to be logged to
                        the audit trail. The field am_failure specifies which
                        classes of failed audit events are to be logged. The
                        value of both fields is the bitwise OR'ing of the
                        event classes specified in bsm/audit.h.  The various
                        audit classes are described more fully in
                        audit_class(5).

     A_SETKMASK         Set the current value of the audit preselection mask
                        for non-attributable events.  Data should point to an
                        au_mask_t.  The masks are defined as described in
                        A_GETKMASK.

     A_GETQCTRL         Get the current settings for the audit queue (specify-ing (specifying
                        ing in kernel buffer size, percentage of free filesys-tem filesystem
                        tem blocks, and limits to the number of audit records
                        allowed).  Data should point to an au_qctrl_t.

     A_SETQCTRL         Set the current settings for the audit queue.  Data
                        should point to an au_qctrl_t.

     A_GETCOND          Gets the current condition of the auditing subsystem.
                        If the value is AUC_AUDITING, then the audit implemen-tation implementation
                        tation is currently running. If the value is AUC_NOAU-DIT AUC_NOAUDIT
                        DIT then the audit implementation is currently turned
                        off.  Data should point to a long.

     A_SETCOND          Sets the condition of the auditing subsystem. If
                        AUC_NOAUDIT is set, then auditing is temporarily sus-pended. suspended.
                        pended. If AUC_AUDITING is set, auditing is resumed.
                        If AUC_DISABLED is set, the auditing system will shut-down, shutdown,
                        down, draining all audit records and closing out the
                        audit trail file.  To re-enable auditing, a call to
                        auditctl is required in addition to setting the condi-tion condition
                        tion to AUC_AUDITING.  Data should point to a long.

     A_GETCLASS         Returns the audit class for the specified audit event.
                        Data should point to a au_evclassmap_t.

     A_SETCLASS         Sets the audit class for the specified audit event.
                        Data should point to a au_evclassmap_t.

     A_GETPINFO         Returns the audit information stored in the credential
                        for the current process.  Data should point to a
                        auditpinfo_t.

     A_SETPMASK         Sets the audit settings for a process. The audit user
                        ID, preselection masks for both success and failure,
                        and terminal IDs must be set.  Data should point to a
                        auditpinfo_t struct.

     A_SETFSIZE         Set the limit on audit trail file size. File size is
                        in bytes. The file size specified is treated as an
                        advisory limit. The system will make a best effort
                        attempt to rotate log files before they exceed the
                        requested maximum size, but makes no guarantees on log
                        file size Data should point to a au_fstat_t struct.
                        The af_filesz field is used to specify the new file
                        size, which must be greater than MIN_AUDIT_FILE_SIZE.
                        A value of 0 indicates no limit on the audit trail's
                        size. The af_currsz field is ignored. A errno value of
                        EINVAL indicates a maximum file size that is too
                        small.

     A_GETFSIZE         Return the maximum allowable size of the audit trail,
                        and the current size of the audit trail.  Data should
                        point to a au_fstat_t struct.

     A_GETPINFO_ADDR    Not implemented, returns ENOSYS.

     A_GETKAUDIT        Not implemented, returns ENOSYS.

     A_SETKAUDIT        Not implemented, returns ENOSYS.

RETURN VALUES
     Upon successful completion a value of 0 is returned.  Otherwise, a value
     of -1 is returned and errno is set to indicate the error.

ERRORS
     Errors are specific to the operation requested. In addition, rhe
     auditon() system call will fail if:

     [EINVAL]           Length is less than or equal to zero, or if it is
                        greater than any of the expected structures.

SEE ALSO
     audit(2), auditctl(2), getauid(2), setauid(2), getaudit(2), setaudit(2),
     getaudit_addr(2), setaudit_addr(2), audit_class(5)

HISTORY
     The auditon() function call first appeared in Mac OS X 10.3 (Panther).

Darwin                           July 30, 2007                          Darwin