typedef struct _ACCESS_STATE
{
     LUID OperationID;
     UCHAR SecurityEvaluated;
     UCHAR GenerateAudit;
     UCHAR GenerateOnClose;
     UCHAR PrivilegesAllocated;
     ULONG Flags;
     ULONG RemainingDesiredAccess;
     ULONG PreviouslyGrantedAccess;
     ULONG OriginalDesiredAccess;
     SECURITY_SUBJECT_CONTEXT SubjectSecurityContext;
     PVOID SecurityDescriptor;
     PVOID AuxData;
     BYTE Privileges[44];
     UCHAR AuditPrivileges;
     UNICODE_STRING ObjectName;
     UNICODE_STRING ObjectTypeName;
} ACCESS_STATE, *PACCESS_STATE;

Windows Vista Kernel Structures