/***************************************************************************/
/**                                                                       **/
/** HPE CONFIDENTIAL. This software is confidential proprietary software  **/
/** licensed by Hewlett-Packard Enterprise Development, LP, and is not    **/
/** authorized to be used, duplicated OR disclosed to anyone without the  **/
/** prior written permission of HPE.                                      **/
/** © 2023 Copyright Hewlett-Packard Enterprise Development, LP           **/
/**                                                                       **/
/** VMS SOFTWARE, INC. CONFIDENTIAL. This software is confidential        **/
/** proprietary software licensed by VMS Software, Inc., and is not       **/
/** authorized to be used, duplicated or disclosed to anyone without      **/
/** the prior written permission of VMS Software, Inc.                    **/
/** © 2023 Copyright VMS Software, Inc.                                   **/
/**                                                                       **/
/***************************************************************************/
/********************************************************************************************************************************/
/* Created:  9-Nov-2023 12:06:45 by OpenVMS SDL V3.7       */
/* Source:  25-OCT-1994 08:33:10 $1$DGA8345:[LIB_H.SRC]BUFIODEF.SDL;1 */
/********************************************************************************************************************************/
/*** MODULE $BUFIODEF ***/
#ifndef __BUFIODEF_LOADED
#define __BUFIODEF_LOADED 1
 
#pragma __nostandard			 /* This file uses non-ANSI-Standard features */
#pragma __member_alignment __save
#pragma __nomember_alignment
#ifdef __INITIAL_POINTER_SIZE			 /* Defined whenever ptr size pragmas supported */
#pragma __required_pointer_size __save		 /* Save the previously-defined required ptr size */
#pragma __required_pointer_size __short		 /* And set ptr size default to 32-bit pointers */
#endif
 
#ifdef __cplusplus
    extern "C" {
#define __unknown_params ...
#define __optional_params ...
#else
#define __unknown_params
#define __optional_params ...
#endif
 
#ifndef __struct
#if !defined(__VAXC)
#define __struct struct
#else
#define __struct variant_struct
#endif
#endif
 
#ifndef __union
#if !defined(__VAXC)
#define __union union
#else
#define __union variant_union
#endif
#endif
 
/*+                                                                         */
/* BUFIO - Buffered I/O Packet Header                                       */
/*                                                                          */
/* There are two alternative formats for the packet header of a simple      */
/* buffered I/O packet.  The first is the "traditional" 12 byte header      */
/* (symbolic constant BUFIO$K_HDRLEN32) that contains room for a 32-bit     */
/* user buffer address.  The second alternative format, with size           */
/* BUFIO$K_HDRLEN64, that contains room for a 64-bit user buffer address.   */
/*                                                                          */
/* These two types of simple buffered I/O packets are "self identifying."   */
/* That is, it is possible to distinguish a 32-bit from a 64-bit format     */
/* packet from the 32-bit user buffer address cell.  A -1 value (symbolic   */
/* constant BUFIO$K_64) in this cell indicates that this is a 64-bit buffered */
/* I/O packet and that the user buffer address is in the BUFIO$PQ_UVA64 cell. */
/* This is very similar to the method used to identify a 64-bit descriptor. */
/*-                                                                         */
	
#define BUFIO$K_64 -1                   /* BUFIO$K_64, see BUFIO$PQ_UVA64   */
#define BUFIO$K_HDRLEN32 12             /* Size of 32-bit BUFIO packet header */
#define BUFIO$K_HDRLEN64 24             /* Size of 64-bit BUFIO packet header */
	
#if !defined(__NOBASEALIGN_SUPPORT)  && !defined(__cplusplus)   /* If using pre DECC V4.0 or C++ */
#pragma __nomember_alignment __quadword
#else
#pragma __nomember_alignment
#endif
typedef struct _bufio {
#pragma __nomember_alignment
    void *bufio$ps_pktdata;             /* Pointer to the buffered data within the packet */
    void *bufio$ps_uva32;               /* 32-bit pointer to user's buffer, or BUFIO$K_64 (-1) */
    unsigned short int bufio$w_size;    /* Total packet size                */
    unsigned char bufio$b_type;         /* Structure type, DYN$C_BUFIO      */
    char bufio$b_fill_1;
    int bufio$l_fill_2;
#pragma __member_alignment
#ifdef __INITIAL_POINTER_SIZE			 /* Defined whenever ptr size pragmas supported */
#pragma __required_pointer_size __long		 /* And set ptr size default to 64-bit pointers */
    void *bufio$pq_uva64;               /* 64-bit pointer to user's buffer  */
#else
	unsigned __int64 bufio$pq_uva64;
#endif
/* Valid if and only if BUFIO$PS_UVA32 contains                             */
/* the value BUFIO$K_64 (-1).                                               */
    } BUFIO;
 
#pragma __member_alignment __restore
#ifdef __INITIAL_POINTER_SIZE			 /* Defined whenever ptr size pragmas supported */
#pragma __required_pointer_size __restore		 /* Restore the previously-defined required ptr size */
#endif
#ifdef __cplusplus
    }
#endif
#pragma __standard
 
#endif /* __BUFIODEF_LOADED */