--
--****************************************************************************
--*                                                                          *
--*  Copyright (c) 2001                                                      *
--*  by DIGITAL Equipment Corporation, Maynard, Mass.                        *
--*                                                                          *
--*  This software is furnished under a license and may be used and  copied  *
--*  only  in  accordance  with  the  terms  of  such  license and with the  *
--*  inclusion of the above copyright notice.  This software or  any  other  *
--*  copies  thereof may not be provided or otherwise made available to any  *
--*  other person.  No title to and ownership of  the  software  is  hereby  *
--*  transferred.                                                            *
--*                                                                          *
--*  The information in this software is subject to change  without  notice  *
--*  and  should  not  be  construed  as  a commitment by DIGITAL Equipment  *
--*  Corporation.                                                            *
--*                                                                          *
--*  DIGITAL assumes no responsibility for the use or  reliability  of  its  *
--*  software on equipment which is not supplied by DIGITAL.                 *
--*                                                                          *
--****************************************************************************
--********************************************************************************************************************
-- Created: 15-MAR-2001 22:49:47 by OpenVMS SDL EV1-33     
-- Source:  27-FEB-1991 16:37:54 $11$DUA933:[LIB_ADA.LIS]ACBDEF.SDL;1 
--********************************************************************************************************************
with SYSTEM; use SYSTEM;
with STARLET; use STARLET;
with CONDITION_HANDLING; use CONDITION_HANDLING;
 
package ACBDEF is
 
--  module $ACBDEF
 
--+
-- AST CONTROL BLOCK DEFINITIONS
--
-- AST CONTROL BLOCKS EXIST AS SEPARATE STRUCTURES AND AS SUBSTRUCTURES
-- WITHIN LARGER CONTROL BLOCKS SUCH AS I/O REQUEST PACKETS AND TIMER
-- QUEUE ENTRIES.
--
---
 
    ACB_M_POSIX_ACB		: constant := 16#00000008#;
    ACB_M_PKAST			: constant := 16#00000010#;
    ACB_M_NODELETE		: constant := 16#00000020#;
    ACB_M_QUOTA			: constant := 16#00000040#;
    ACB_M_KAST			: constant := 16#00000080#;
    ACB_K_LENGTH		: constant := 28;			--  Length of block. 
    ACB_C_LENGTH		: constant := 28;			--  Length of block. 
 
    type ACB_RMOD_TYPE is						-- REQUEST ACCESS MODE 
	record
	    MODE	: UNSIGNED_2;					-- MODE FOR FINAL DELIVERY 
	    FILLER_1	: BOOLEAN;					--  SPARE 
	    POSIX_ACB	: BOOLEAN;					-- USED FOR DELIVERING SIGNALS/EVENTS
	    PKAST	: BOOLEAN;					-- PIGGY BACK SPECIAL KERNEL AST 
	    NODELETE	: BOOLEAN;					-- DON'T DELETE ACB ON DELIVERY 
	    QUOTA	: BOOLEAN;					-- ACCOUNT FOR QUOTA 
	    KAST	: BOOLEAN;					-- SPECIAL KERNEL AST 
	end record;
 
	    for ACB_RMOD_TYPE use 
		record
		    MODE	at 0 range 0 .. 1;
		    FILLER_1	at 0 range 2 .. 2;
		    POSIX_ACB	at 0 range 3 .. 3;
		    PKAST	at 0 range 4 .. 4;
		    NODELETE	at 0 range 5 .. 5;
		    QUOTA	at 0 range 6 .. 6;
		    KAST	at 0 range 7 .. 7;
		end record;
	    for ACB_RMOD_TYPE'SIZE use 8;
 
    ACB_RMOD_TYPE_INIT : constant ACB_RMOD_TYPE := 
	    (MODE	=> 0,
	    FILLER_1	=> FALSE,
	    POSIX_ACB	=> FALSE,
	    PKAST	=> FALSE,
	    NODELETE	=> FALSE,
	    QUOTA	=> FALSE,
	    KAST	=> FALSE);
 
    type ACB_TYPE is
	record
	    ASTQFL	: UNSIGNED_LONGWORD;				-- AST QUEUE FORWARD LINK 
	    ASTQBL	: UNSIGNED_LONGWORD;				-- AST QUEUE BACKWARD LINK 
	    SIZE	: UNSIGNED_WORD;				-- STRUCTURE SIZE IN BYTES 
	    TYP		: UNSIGNED_BYTE;				-- STRUCTURE TYPE CODE 
	    RMOD	: ACB_RMOD_TYPE;				-- REQUEST ACCESS MODE 
	    PID		: UNSIGNED_LONGWORD;				-- PROCESS ID OF REQUEST 
	    AST		: UNSIGNED_LONGWORD;				-- AST ROUTINE ADDRESS 
	    ASTPRM	: UNSIGNED_LONGWORD;				-- AST PARAMETER 
	    KAST	: UNSIGNED_LONGWORD;				-- INTERNAL KERNEL MODE XFER ADDRESS 
	end record;
 
	    for ACB_TYPE use 
		record
		    ASTQFL	at 0 range 0 .. 31;
		    ASTQBL	at 4 range 0 .. 31;
		    SIZE	at 8 range 0 .. 15;
		    TYP		at 10 range 0 .. 7;
		    RMOD	at 11 range 0 .. 7;
		    PID		at 12 range 0 .. 31;
		    AST		at 16 range 0 .. 31;
		    ASTPRM	at 20 range 0 .. 31;
		    KAST	at 24 range 0 .. 31;
		end record;
	    for ACB_TYPE'SIZE use 224;
 
    ACB_TYPE_INIT : constant ACB_TYPE := 
	    (ASTQFL	=> 0,
	    ASTQBL	=> 0,
	    SIZE	=> 0,
	    TYP		=> 0,
	    RMOD	=> ACB_RMOD_TYPE_INIT,
	    PID		=> 0,
	    AST		=> 0,
	    ASTPRM	=> 0,
	    KAST	=> 0);
 
end ACBDEF;