--********************************************************************************************************************
-- Created:  9-Mar-2021 22:28:28 by OpenVMS SDL EV3-3      
-- Source:  20-JAN-2004 10:53:17 $1$DGA8085:[LIB_ADA.LIS]KFDDEF.SDL;1 
--********************************************************************************************************************
with SYSTEM; use SYSTEM;
with STARLET; use STARLET;
with CONDITION_HANDLING; use CONDITION_HANDLING;
 
package KFDDEF is
 
--  module $KFDDEF
 
--
-- KNOWN FILE DEVICE AND DIRECTORY BLOCK DEFINITIONS
--
 
    KFD_C_LENGTH		: constant := 17;			--  Length of fixed area of kfd entry 
    KFD_S_KFDDEF		: constant := 17;			--  Old size name - synonym
 
    type KFD_TYPE is
	record
	    LINK	: ADDRESS;					--  Device, Directory, Extension (KFD) list link
	    KFELIST	: ADDRESS;					--  Ordered Known file entry list header
	    SIZE	: UNSIGNED_WORD;				--  Size of block 
	    TYP		: UNSIGNED_BYTE;				--  Structure type 
	    SPARE	: UNSIGNED_BYTE;				--  spare
	    REFCNT	: UNSIGNED_WORD;				--  Number of KFE's with same KFD
	    DEVLEN	: UNSIGNED_BYTE;				--  Length of Device string
	    DIRLEN	: UNSIGNED_BYTE;				--  Length of Directory string
	    DDTSTRLEN	: UNSIGNED_BYTE;				--  Length of Device, Directory, Type (DDT) string
	    DDTSTR	: STRING(1 .. 0);				--  Offset to DDT string
	end record;
 
	    for KFD_TYPE use 
		record
		    LINK	at 0 range 0 .. 31;
		    KFELIST	at 4 range 0 .. 31;
		    SIZE	at 8 range 0 .. 15;
		    TYP		at 10 range 0 .. 7;
		    SPARE	at 11 range 0 .. 7;
		    REFCNT	at 12 range 0 .. 15;
		    DEVLEN	at 14 range 0 .. 7;
		    DIRLEN	at 15 range 0 .. 7;
		    DDTSTRLEN	at 16 range 0 .. 7;
		    DDTSTR	at 17 range 0 .. -1;
		end record;
	    for KFD_TYPE'SIZE use 136;
 
    KFD_TYPE_INIT : constant KFD_TYPE := 
	    (LINK	=> ADDRESS_ZERO,
	    KFELIST	=> ADDRESS_ZERO,
	    SIZE	=> 0,
	    TYP		=> 0,
	    SPARE	=> 0,
	    REFCNT	=> 0,
	    DEVLEN	=> 0,
	    DIRLEN	=> 0,
	    DDTSTRLEN	=> 0,
	    DDTSTR	=> (others => ASCII.NUL));
 
end KFDDEF;