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VolLockBroadcast

構造体
サイズx64: 20 バイト / x86: 20 バイト

サイズ=各フィールドのバイト数(x64/x86 で異なる場合は x64/x86 と併記)。x64/x86 列=フィールドのバイトオフセット(HSPで dupptr / lpoke / wpoke 等に使用)。

フィールド

フィールド型サイズx64x86説明
vlb_dbhDEV_BROADCAST_HDR12+0+0デバイスブロードキャストの共通ヘッダ(DEV_BROADCAST_HDR)である。
vlb_ownerDWORD4+12+12ボリュームロックを所有するプロセスの識別子である。
vlb_permsBYTE1+16+16ロックの権限を示すフラグである。
vlb_lockTypeBYTE1+17+17ロックの種類である。
vlb_driveBYTE1+18+18対象ドライブを示す値である。
vlb_flagsBYTE1+19+19ロックに関する追加フラグである。

各言語での定義

#include <windows.h>

// DEV_BROADCAST_HDR  (x64 12 / x86 12 バイト)
typedef struct DEV_BROADCAST_HDR {
    DWORD dbch_size;
    DEV_BROADCAST_HDR_DEVICE_TYPE dbch_devicetype;
    DWORD dbch_reserved;
} DEV_BROADCAST_HDR;

// VolLockBroadcast  (x64 20 / x86 20 バイト)
typedef struct VolLockBroadcast {
    DEV_BROADCAST_HDR vlb_dbh;
    DWORD vlb_owner;
    BYTE vlb_perms;
    BYTE vlb_lockType;
    BYTE vlb_drive;
    BYTE vlb_flags;
} VolLockBroadcast;
using System;
using System.Runtime.InteropServices;

[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
public struct DEV_BROADCAST_HDR
{
    public uint dbch_size;
    public uint dbch_devicetype;
    public uint dbch_reserved;
}

[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
public struct VolLockBroadcast
{
    public DEV_BROADCAST_HDR vlb_dbh;
    public uint vlb_owner;
    public byte vlb_perms;
    public byte vlb_lockType;
    public byte vlb_drive;
    public byte vlb_flags;
}
Imports System.Runtime.InteropServices

<StructLayout(LayoutKind.Sequential, CharSet:=CharSet.Unicode)>
Public Structure DEV_BROADCAST_HDR
    Public dbch_size As UInteger
    Public dbch_devicetype As UInteger
    Public dbch_reserved As UInteger
End Structure

<StructLayout(LayoutKind.Sequential, CharSet:=CharSet.Unicode)>
Public Structure VolLockBroadcast
    Public vlb_dbh As DEV_BROADCAST_HDR
    Public vlb_owner As UInteger
    Public vlb_perms As Byte
    Public vlb_lockType As Byte
    Public vlb_drive As Byte
    Public vlb_flags As Byte
End Structure
import ctypes
from ctypes import wintypes

class DEV_BROADCAST_HDR(ctypes.Structure):
    _fields_ = [
        ("dbch_size", wintypes.DWORD),
        ("dbch_devicetype", wintypes.DWORD),
        ("dbch_reserved", wintypes.DWORD),
    ]

class VolLockBroadcast(ctypes.Structure):
    _fields_ = [
        ("vlb_dbh", DEV_BROADCAST_HDR),
        ("vlb_owner", wintypes.DWORD),
        ("vlb_perms", ctypes.c_ubyte),
        ("vlb_lockType", ctypes.c_ubyte),
        ("vlb_drive", ctypes.c_ubyte),
        ("vlb_flags", ctypes.c_ubyte),
    ]
#[repr(C)]
pub struct DEV_BROADCAST_HDR {
    pub dbch_size: u32,
    pub dbch_devicetype: u32,
    pub dbch_reserved: u32,
}

#[repr(C)]
pub struct VolLockBroadcast {
    pub vlb_dbh: DEV_BROADCAST_HDR,
    pub vlb_owner: u32,
    pub vlb_perms: u8,
    pub vlb_lockType: u8,
    pub vlb_drive: u8,
    pub vlb_flags: u8,
}
import "golang.org/x/sys/windows"

type DEV_BROADCAST_HDR struct {
	dbch_size uint32
	dbch_devicetype uint32
	dbch_reserved uint32
}

type VolLockBroadcast struct {
	vlb_dbh DEV_BROADCAST_HDR
	vlb_owner uint32
	vlb_perms byte
	vlb_lockType byte
	vlb_drive byte
	vlb_flags byte
}
type
  DEV_BROADCAST_HDR = record
    dbch_size: DWORD;
    dbch_devicetype: DWORD;
    dbch_reserved: DWORD;
  end;

  VolLockBroadcast = record
    vlb_dbh: DEV_BROADCAST_HDR;
    vlb_owner: DWORD;
    vlb_perms: Byte;
    vlb_lockType: Byte;
    vlb_drive: Byte;
    vlb_flags: Byte;
  end;
const DEV_BROADCAST_HDR = extern struct {
    dbch_size: u32,
    dbch_devicetype: u32,
    dbch_reserved: u32,
};

const VolLockBroadcast = extern struct {
    vlb_dbh: DEV_BROADCAST_HDR,
    vlb_owner: u32,
    vlb_perms: u8,
    vlb_lockType: u8,
    vlb_drive: u8,
    vlb_flags: u8,
};
type
  DEV_BROADCAST_HDR {.bycopy.} = object
    dbch_size: uint32
    dbch_devicetype: uint32
    dbch_reserved: uint32

  VolLockBroadcast {.bycopy.} = object
    vlb_dbh: DEV_BROADCAST_HDR
    vlb_owner: uint32
    vlb_perms: uint8
    vlb_lockType: uint8
    vlb_drive: uint8
    vlb_flags: uint8
struct DEV_BROADCAST_HDR
{
    uint dbch_size;
    uint dbch_devicetype;
    uint dbch_reserved;
}

struct VolLockBroadcast
{
    DEV_BROADCAST_HDR vlb_dbh;
    uint vlb_owner;
    ubyte vlb_perms;
    ubyte vlb_lockType;
    ubyte vlb_drive;
    ubyte vlb_flags;
}

HSP用 定義

HSP3.7/3.8 は構造体機能が無いため4byte整数配列(dim)+peek/poke で操作(32/64bitでサイズ・位置が異なる場合はタブで分割)。IronHSP は NSTRUCT(#defstruct/stdim/->)で32/64bit共通。

; HSP3.7/3.8 は構造体機能が無いため、4byte整数の配列変数で操作します。(x64 レイアウト)
; VolLockBroadcast サイズ: 20 バイト(x64)
dim st, 5    ; 4byte整数×5(構造体サイズ 20 / 4 切り上げ)
; vlb_dbh : DEV_BROADCAST_HDR (+0, 12byte)  varptr(st)+0 を基点に操作(12byte:入れ子/配列)
; vlb_owner : DWORD (+12, 4byte)  st.3 = 値  /  値 = st.3   (lpoke/lpeek も可)
; vlb_perms : BYTE (+16, 1byte)  poke st,16,値  /  値 = peek(st,16)
; vlb_lockType : BYTE (+17, 1byte)  poke st,17,値  /  値 = peek(st,17)
; vlb_drive : BYTE (+18, 1byte)  poke st,18,値  /  値 = peek(st,18)
; vlb_flags : BYTE (+19, 1byte)  poke st,19,値  /  値 = peek(st,19)
; ※4byte境界の整数は添字 st.N(N=オフセット/4)で読み書き可。それ以外は peek/poke 系を使用。
; IronHSP は NSTRUCT(構造体)をサポート。32bit/64bit どちらでも同じコードで動作します。
; ※GUID・入れ子構造体はデフォルト型でないため、依存する #defstruct を先に定義(下記に同梱)。
#defstruct global DEV_BROADCAST_HDR
    #field int dbch_size
    #field int dbch_devicetype
    #field int dbch_reserved
#endstruct

#defstruct global VolLockBroadcast
    #field DEV_BROADCAST_HDR vlb_dbh
    #field int vlb_owner
    #field byte vlb_perms
    #field byte vlb_lockType
    #field byte vlb_drive
    #field byte vlb_flags
#endstruct

stdim st, VolLockBroadcast        ; NSTRUCT 変数を確保
st->vlb_owner = 100
mes "vlb_owner=" + st->vlb_owner