OpenVirtualDisk

関数

VHDなどの仮想ディスクファイルを開いてハンドルを取得する。

DLLVirtDisk.dll呼出規約winapi対応OSWindows 7 以降

シグネチャ

// VirtDisk.dll
#include <windows.h>

WIN32_ERROR OpenVirtualDisk(
    VIRTUAL_STORAGE_TYPE* VirtualStorageType,
    LPCWSTR Path,
    VIRTUAL_DISK_ACCESS_MASK VirtualDiskAccessMask,
    OPEN_VIRTUAL_DISK_FLAG Flags,
    OPEN_VIRTUAL_DISK_PARAMETERS* Parameters,   // optional
    HANDLE* Handle
);

パラメーター

名前	型	方向
VirtualStorageType	VIRTUAL_STORAGE_TYPE*	in
Path	LPCWSTR	in
VirtualDiskAccessMask	VIRTUAL_DISK_ACCESS_MASK	in
Flags	OPEN_VIRTUAL_DISK_FLAG	in
Parameters	OPEN_VIRTUAL_DISK_PARAMETERS*	inoptional
Handle	HANDLE*	out

戻り値の型: WIN32_ERROR

各言語での呼び出し定義

// VirtDisk.dll
#include <windows.h>

WIN32_ERROR OpenVirtualDisk(
    VIRTUAL_STORAGE_TYPE* VirtualStorageType,
    LPCWSTR Path,
    VIRTUAL_DISK_ACCESS_MASK VirtualDiskAccessMask,
    OPEN_VIRTUAL_DISK_FLAG Flags,
    OPEN_VIRTUAL_DISK_PARAMETERS* Parameters,   // optional
    HANDLE* Handle
);

[DllImport("VirtDisk.dll", ExactSpelling = true)]
static extern uint OpenVirtualDisk(
    IntPtr VirtualStorageType,   // VIRTUAL_STORAGE_TYPE*
    [MarshalAs(UnmanagedType.LPWStr)] string Path,   // LPCWSTR
    int VirtualDiskAccessMask,   // VIRTUAL_DISK_ACCESS_MASK
    int Flags,   // OPEN_VIRTUAL_DISK_FLAG
    IntPtr Parameters,   // OPEN_VIRTUAL_DISK_PARAMETERS* optional
    IntPtr Handle   // HANDLE* out
);

<DllImport("VirtDisk.dll", ExactSpelling:=True)>
Public Shared Function OpenVirtualDisk(
    VirtualStorageType As IntPtr,   ' VIRTUAL_STORAGE_TYPE*
    <MarshalAs(UnmanagedType.LPWStr)> Path As String,   ' LPCWSTR
    VirtualDiskAccessMask As Integer,   ' VIRTUAL_DISK_ACCESS_MASK
    Flags As Integer,   ' OPEN_VIRTUAL_DISK_FLAG
    Parameters As IntPtr,   ' OPEN_VIRTUAL_DISK_PARAMETERS* optional
    Handle As IntPtr   ' HANDLE* out
) As UInteger
End Function

' VirtualStorageType : VIRTUAL_STORAGE_TYPE*
' Path : LPCWSTR
' VirtualDiskAccessMask : VIRTUAL_DISK_ACCESS_MASK
' Flags : OPEN_VIRTUAL_DISK_FLAG
' Parameters : OPEN_VIRTUAL_DISK_PARAMETERS* optional
' Handle : HANDLE* out
Declare PtrSafe Function OpenVirtualDisk Lib "virtdisk" ( _
    ByVal VirtualStorageType As LongPtr, _
    ByVal Path As LongPtr, _
    ByVal VirtualDiskAccessMask As Long, _
    ByVal Flags As Long, _
    ByVal Parameters As LongPtr, _
    ByVal Handle As LongPtr) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

OpenVirtualDisk = ctypes.windll.virtdisk.OpenVirtualDisk
OpenVirtualDisk.restype = wintypes.DWORD
OpenVirtualDisk.argtypes = [
    ctypes.c_void_p,  # VirtualStorageType : VIRTUAL_STORAGE_TYPE*
    wintypes.LPCWSTR,  # Path : LPCWSTR
    ctypes.c_int,  # VirtualDiskAccessMask : VIRTUAL_DISK_ACCESS_MASK
    ctypes.c_int,  # Flags : OPEN_VIRTUAL_DISK_FLAG
    ctypes.c_void_p,  # Parameters : OPEN_VIRTUAL_DISK_PARAMETERS* optional
    ctypes.c_void_p,  # Handle : HANDLE* out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('VirtDisk.dll')
OpenVirtualDisk = Fiddle::Function.new(
  lib['OpenVirtualDisk'],
  [
    Fiddle::TYPE_VOIDP,  # VirtualStorageType : VIRTUAL_STORAGE_TYPE*
    Fiddle::TYPE_VOIDP,  # Path : LPCWSTR
    Fiddle::TYPE_INT,  # VirtualDiskAccessMask : VIRTUAL_DISK_ACCESS_MASK
    Fiddle::TYPE_INT,  # Flags : OPEN_VIRTUAL_DISK_FLAG
    Fiddle::TYPE_VOIDP,  # Parameters : OPEN_VIRTUAL_DISK_PARAMETERS* optional
    Fiddle::TYPE_VOIDP,  # Handle : HANDLE* out
  ],
  -Fiddle::TYPE_INT)

#[link(name = "virtdisk")]
extern "system" {
    fn OpenVirtualDisk(
        VirtualStorageType: *mut VIRTUAL_STORAGE_TYPE,  // VIRTUAL_STORAGE_TYPE*
        Path: *const u16,  // LPCWSTR
        VirtualDiskAccessMask: i32,  // VIRTUAL_DISK_ACCESS_MASK
        Flags: i32,  // OPEN_VIRTUAL_DISK_FLAG
        Parameters: *mut OPEN_VIRTUAL_DISK_PARAMETERS,  // OPEN_VIRTUAL_DISK_PARAMETERS* optional
        Handle: *mut *mut core::ffi::c_void  // HANDLE* out
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("VirtDisk.dll")]
public static extern uint OpenVirtualDisk(IntPtr VirtualStorageType, [MarshalAs(UnmanagedType.LPWStr)] string Path, int VirtualDiskAccessMask, int Flags, IntPtr Parameters, IntPtr Handle);
"@
$api = Add-Type -MemberDefinition $sig -Name 'VirtDisk_OpenVirtualDisk' -Namespace Win32 -PassThru
# $api::OpenVirtualDisk(VirtualStorageType, Path, VirtualDiskAccessMask, Flags, Parameters, Handle)

#uselib "VirtDisk.dll"
#func global OpenVirtualDisk "OpenVirtualDisk" sptr, sptr, sptr, sptr, sptr, sptr
; OpenVirtualDisk varptr(VirtualStorageType), Path, VirtualDiskAccessMask, Flags, varptr(Parameters), Handle   ; 戻り値は stat
; VirtualStorageType : VIRTUAL_STORAGE_TYPE* -> "sptr"
; Path : LPCWSTR -> "sptr"
; VirtualDiskAccessMask : VIRTUAL_DISK_ACCESS_MASK -> "sptr"
; Flags : OPEN_VIRTUAL_DISK_FLAG -> "sptr"
; Parameters : OPEN_VIRTUAL_DISK_PARAMETERS* optional -> "sptr"
; Handle : HANDLE* out -> "sptr"
; ※HSP3.7は #func のため戻り値はシステム変数 stat に格納されます。

出力引数:

#uselib "VirtDisk.dll"
#cfunc global OpenVirtualDisk "OpenVirtualDisk" var, wstr, int, int, var, sptr
; res = OpenVirtualDisk(VirtualStorageType, Path, VirtualDiskAccessMask, Flags, Parameters, Handle)
; VirtualStorageType : VIRTUAL_STORAGE_TYPE* -> "var"
; Path : LPCWSTR -> "wstr"
; VirtualDiskAccessMask : VIRTUAL_DISK_ACCESS_MASK -> "int"
; Flags : OPEN_VIRTUAL_DISK_FLAG -> "int"
; Parameters : OPEN_VIRTUAL_DISK_PARAMETERS* optional -> "var"
; Handle : HANDLE* out -> "sptr"
; ※出力/バッファ引数は var 方式(変数を直接渡す)。varptr 方式にも切替可。#uselib "VirtDisk.dll"
#cfunc global OpenVirtualDisk "OpenVirtualDisk" sptr, wstr, int, int, sptr, sptr
; res = OpenVirtualDisk(varptr(VirtualStorageType), Path, VirtualDiskAccessMask, Flags, varptr(Parameters), Handle)
; VirtualStorageType : VIRTUAL_STORAGE_TYPE* -> "sptr"
; Path : LPCWSTR -> "wstr"
; VirtualDiskAccessMask : VIRTUAL_DISK_ACCESS_MASK -> "int"
; Flags : OPEN_VIRTUAL_DISK_FLAG -> "int"
; Parameters : OPEN_VIRTUAL_DISK_PARAMETERS* optional -> "sptr"
; Handle : HANDLE* out -> "sptr"
; ※出力/バッファ引数はポインタ方式(token=sptr / 呼び出しは varptr(変数))。

出力引数:

; WIN32_ERROR OpenVirtualDisk(VIRTUAL_STORAGE_TYPE* VirtualStorageType, LPCWSTR Path, VIRTUAL_DISK_ACCESS_MASK VirtualDiskAccessMask, OPEN_VIRTUAL_DISK_FLAG Flags, OPEN_VIRTUAL_DISK_PARAMETERS* Parameters, HANDLE* Handle)
#uselib "VirtDisk.dll"
#cfunc global OpenVirtualDisk "OpenVirtualDisk" var, wstr, int, int, var, intptr
; res = OpenVirtualDisk(VirtualStorageType, Path, VirtualDiskAccessMask, Flags, Parameters, Handle)
; VirtualStorageType : VIRTUAL_STORAGE_TYPE* -> "var"
; Path : LPCWSTR -> "wstr"
; VirtualDiskAccessMask : VIRTUAL_DISK_ACCESS_MASK -> "int"
; Flags : OPEN_VIRTUAL_DISK_FLAG -> "int"
; Parameters : OPEN_VIRTUAL_DISK_PARAMETERS* optional -> "var"
; Handle : HANDLE* out -> "intptr"
; ※出力/バッファ引数は var 方式(変数を直接渡す)。varptr 方式にも切替可。; WIN32_ERROR OpenVirtualDisk(VIRTUAL_STORAGE_TYPE* VirtualStorageType, LPCWSTR Path, VIRTUAL_DISK_ACCESS_MASK VirtualDiskAccessMask, OPEN_VIRTUAL_DISK_FLAG Flags, OPEN_VIRTUAL_DISK_PARAMETERS* Parameters, HANDLE* Handle)
#uselib "VirtDisk.dll"
#cfunc global OpenVirtualDisk "OpenVirtualDisk" intptr, wstr, int, int, intptr, intptr
; res = OpenVirtualDisk(varptr(VirtualStorageType), Path, VirtualDiskAccessMask, Flags, varptr(Parameters), Handle)
; VirtualStorageType : VIRTUAL_STORAGE_TYPE* -> "intptr"
; Path : LPCWSTR -> "wstr"
; VirtualDiskAccessMask : VIRTUAL_DISK_ACCESS_MASK -> "int"
; Flags : OPEN_VIRTUAL_DISK_FLAG -> "int"
; Parameters : OPEN_VIRTUAL_DISK_PARAMETERS* optional -> "intptr"
; Handle : HANDLE* out -> "intptr"
; ※出力/バッファ引数はポインタ方式(token=intptr / 呼び出しは varptr(変数))。

import (
	"golang.org/x/sys/windows"
	"unsafe"
)

var (
	virtdisk = windows.NewLazySystemDLL("VirtDisk.dll")
	procOpenVirtualDisk = virtdisk.NewProc("OpenVirtualDisk")
)

// VirtualStorageType (VIRTUAL_STORAGE_TYPE*), Path (LPCWSTR), VirtualDiskAccessMask (VIRTUAL_DISK_ACCESS_MASK), Flags (OPEN_VIRTUAL_DISK_FLAG), Parameters (OPEN_VIRTUAL_DISK_PARAMETERS* optional), Handle (HANDLE* out)
r1, _, err := procOpenVirtualDisk.Call(
	uintptr(VirtualStorageType),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(Path))),
	uintptr(VirtualDiskAccessMask),
	uintptr(Flags),
	uintptr(Parameters),
	uintptr(Handle),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // WIN32_ERROR

function OpenVirtualDisk(
  VirtualStorageType: Pointer;   // VIRTUAL_STORAGE_TYPE*
  Path: PWideChar;   // LPCWSTR
  VirtualDiskAccessMask: Integer;   // VIRTUAL_DISK_ACCESS_MASK
  Flags: Integer;   // OPEN_VIRTUAL_DISK_FLAG
  Parameters: Pointer;   // OPEN_VIRTUAL_DISK_PARAMETERS* optional
  Handle: Pointer   // HANDLE* out
): DWORD; stdcall;
  external 'VirtDisk.dll' name 'OpenVirtualDisk';

result := DllCall("VirtDisk\OpenVirtualDisk"
    , "Ptr", VirtualStorageType   ; VIRTUAL_STORAGE_TYPE*
    , "WStr", Path   ; LPCWSTR
    , "Int", VirtualDiskAccessMask   ; VIRTUAL_DISK_ACCESS_MASK
    , "Int", Flags   ; OPEN_VIRTUAL_DISK_FLAG
    , "Ptr", Parameters   ; OPEN_VIRTUAL_DISK_PARAMETERS* optional
    , "Ptr", Handle   ; HANDLE* out
    , "UInt")   ; return: WIN32_ERROR

●OpenVirtualDisk(VirtualStorageType, Path, VirtualDiskAccessMask, Flags, Parameters, Handle) = DLL("VirtDisk.dll", "dword OpenVirtualDisk(void*, char*, int, int, void*, void*)")
# 呼び出し: OpenVirtualDisk(VirtualStorageType, Path, VirtualDiskAccessMask, Flags, Parameters, Handle)
# VirtualStorageType : VIRTUAL_STORAGE_TYPE* -> "void*"
# Path : LPCWSTR -> "char*"
# VirtualDiskAccessMask : VIRTUAL_DISK_ACCESS_MASK -> "int"
# Flags : OPEN_VIRTUAL_DISK_FLAG -> "int"
# Parameters : OPEN_VIRTUAL_DISK_PARAMETERS* optional -> "void*"
# Handle : HANDLE* out -> "void*"
# なでしこ1は32bit・ANSI(Shift_JIS)。文字列=char*(ANSI)、ポインタ/ハンドル=void*(4byte)。