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GETAUDIT(2)		    BSD	System Calls Manual		   GETAUDIT(2)

     getaudit, getaudit_addr --	retrieve audit session state

     #include <bsm/audit.h>

     getaudit(auditinfo_t *auditinfo);

     getaudit_addr(auditinfo_addr_t *auditinfo_addr, u_int length);

     The getaudit() system call	retrieves the active audit session state for
     the current process via the auditinfo_t pointed to	by auditinfo.  The
     getaudit_addr() system call retrieves extended state via auditinfo_addr
     and length.

     The auditinfo_t data structure is defined as follows:

	   struct auditinfo {
		   au_id_t	  ai_auid;	   /* Audit user ID */
		   au_mask_t	  ai_mask;	   /* Audit masks */
		   au_tid_t	  ai_termid;	   /* Terminal ID */
		   au_asid_t	  ai_asid;	   /* Audit session ID */
	   typedef struct auditinfo	   auditinfo_t;

     The ai_auid variable contains the audit identifier	which is recorded in
     the audit log for each event the process caused.

     The au_mask_t data	structure defines the bit mask for auditing successful
     and failed	events out of the predefined list of event classes.  It	is de-
     fined as follows:

	   struct au_mask {
		   unsigned int	   am_success;	   /* success bits */
		   unsigned int	   am_failure;	   /* failure bits */
	   typedef struct au_mask  au_mask_t;

     The au_termid_t data structure defines the	Terminal ID recorded with ev-
     ery event caused by the process.  It is defined as	follows:

	   struct au_tid {
		   dev_t	   port;
		   u_int32_t	   machine;
	   typedef struct au_tid   au_tid_t;

     The ai_asid variable contains the audit session ID	which is recorded with
     every event caused	by the process.

     The getaudit_addr() system	call uses the expanded auditinfo_addr_t	data
     structure and supports Terminal IDs with larger addresses such as those
     used in IP	version	6.  It is defined as follows:

	   struct auditinfo_addr {
		   au_id_t	   ai_auid;	   /* Audit user ID. */
		   au_mask_t	   ai_mask;	   /* Audit masks. */
		   au_tid_addr_t   ai_termid;	   /* Terminal ID. */
		   au_asid_t	   ai_asid;	   /* Audit session ID.	*/
	   typedef struct auditinfo_addr   auditinfo_addr_t;

     The au_tid_addr_t data structure which includes a larger address storage
     field and an additional field with	the type of address stored:

	   struct au_tid_addr {
		   dev_t	   at_port;
		   u_int32_t	   at_type;
		   u_int32_t	   at_addr[4];
	   typedef struct au_tid_addr	   au_tid_addr_t;

     These system calls	require	an appropriate privilege to complete.

     The getaudit() and	getaudit_addr()	functions return the value 0 if	suc-
     cessful; otherwise	the value -1 is	returned and the global	variable errno
     is	set to indicate	the error.

     The getaudit() function will fail if:

     [EFAULT]		A failure occurred while data transferred to or	from
			the kernel failed.

     [EINVAL]		Illegal	argument was passed by a system	call.

     [EPERM]		The process does not have sufficient permission	to
			complete the operation.

     [EOVERFLOW]	The length argument indicates an overflow condition
			will occur.

     [E2BIG]		The address is too big and, therefore, getaudit_addr()
			should be used instead.

     audit(2), auditon(2), getauid(2), setaudit(2), setauid(2),	libbsm(3)

     The OpenBSM implementation	was created by McAfee Research,	the security
     division of McAfee	Inc., under contract to	Apple Computer Inc. in 2004.
     It	was subsequently adopted by the	TrustedBSD Project as the foundation
     for the OpenBSM distribution.

     This software was created by McAfee Research, the security	research divi-
     sion of McAfee, Inc., under contract to Apple Computer Inc.  Additional
     authors include Wayne Salamon, Robert Watson, and SPARTA Inc.

     The Basic Security	Module (BSM) interface to audit	records	and audit
     event stream format were defined by Sun Microsystems.

     This manual page was written by Robert Watson <>.

BSD			       October 19, 2008				   BSD


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