GetIScsiTargetInformationW

// ISCSIDSC.dll  (Unicode / -W)
#include <windows.h>

DWORD GetIScsiTargetInformationW(
    LPWSTR TargetName,
    LPWSTR DiscoveryMechanism,   // optional
    TARGET_INFORMATION_CLASS InfoClass,
    DWORD* BufferSize,
    void* Buffer
);

<DllImport("ISCSIDSC.dll", CharSet:=CharSet.Unicode, ExactSpelling:=True)>
Public Shared Function GetIScsiTargetInformationW(
    <MarshalAs(UnmanagedType.LPWStr)> TargetName As String,   ' LPWSTR
    <MarshalAs(UnmanagedType.LPWStr)> DiscoveryMechanism As String,   ' LPWSTR optional
    InfoClass As Integer,   ' TARGET_INFORMATION_CLASS
    ByRef BufferSize As UInteger,   ' DWORD* in/out
    Buffer As IntPtr   ' void* in/out
) As UInteger
End Function

' TargetName : LPWSTR
' DiscoveryMechanism : LPWSTR optional
' InfoClass : TARGET_INFORMATION_CLASS
' BufferSize : DWORD* in/out
' Buffer : void* in/out
Declare PtrSafe Function GetIScsiTargetInformationW Lib "iscsidsc" ( _
    ByVal TargetName As LongPtr, _
    ByVal DiscoveryMechanism As LongPtr, _
    ByVal InfoClass As Long, _
    ByRef BufferSize As Long, _
    ByVal Buffer As LongPtr) As Long
' Unicode(W): 文字列は ByVal As LongPtr とし StrPtr(unicodeStr) を渡す
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

GetIScsiTargetInformationW = ctypes.windll.iscsidsc.GetIScsiTargetInformationW
GetIScsiTargetInformationW.restype = wintypes.DWORD
GetIScsiTargetInformationW.argtypes = [
    wintypes.LPCWSTR,  # TargetName : LPWSTR
    wintypes.LPCWSTR,  # DiscoveryMechanism : LPWSTR optional
    ctypes.c_int,  # InfoClass : TARGET_INFORMATION_CLASS
    ctypes.POINTER(wintypes.DWORD),  # BufferSize : DWORD* in/out
    ctypes.POINTER(None),  # Buffer : void* in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('ISCSIDSC.dll')
GetIScsiTargetInformationW = Fiddle::Function.new(
  lib['GetIScsiTargetInformationW'],
  [
    Fiddle::TYPE_VOIDP,  # TargetName : LPWSTR
    Fiddle::TYPE_VOIDP,  # DiscoveryMechanism : LPWSTR optional
    Fiddle::TYPE_INT,  # InfoClass : TARGET_INFORMATION_CLASS
    Fiddle::TYPE_VOIDP,  # BufferSize : DWORD* in/out
    Fiddle::TYPE_VOIDP,  # Buffer : void* in/out
  ],
  -Fiddle::TYPE_INT)
# Wide strings: pass str.encode("UTF-16LE") + "\x00\x00"

#[link(name = "iscsidsc")]
extern "system" {
    fn GetIScsiTargetInformationW(
        TargetName: *mut u16,  // LPWSTR
        DiscoveryMechanism: *mut u16,  // LPWSTR optional
        InfoClass: i32,  // TARGET_INFORMATION_CLASS
        BufferSize: *mut u32,  // DWORD* in/out
        Buffer: *mut ()  // void* in/out
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("ISCSIDSC.dll", CharSet = CharSet.Unicode)]
public static extern uint GetIScsiTargetInformationW([MarshalAs(UnmanagedType.LPWStr)] string TargetName, [MarshalAs(UnmanagedType.LPWStr)] string DiscoveryMechanism, int InfoClass, ref uint BufferSize, IntPtr Buffer);
"@
$api = Add-Type -MemberDefinition $sig -Name 'ISCSIDSC_GetIScsiTargetInformationW' -Namespace Win32 -PassThru
# $api::GetIScsiTargetInformationW(TargetName, DiscoveryMechanism, InfoClass, BufferSize, Buffer)

#uselib "ISCSIDSC.dll"
#func global GetIScsiTargetInformationW "GetIScsiTargetInformationW" wptr, wptr, wptr, wptr, wptr
; GetIScsiTargetInformationW TargetName, DiscoveryMechanism, InfoClass, varptr(BufferSize), Buffer   ; 戻り値は stat
; TargetName : LPWSTR -> "wptr"
; DiscoveryMechanism : LPWSTR optional -> "wptr"
; InfoClass : TARGET_INFORMATION_CLASS -> "wptr"
; BufferSize : DWORD* in/out -> "wptr"
; Buffer : void* in/out -> "wptr"
; ※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。

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

var (
	iscsidsc = windows.NewLazySystemDLL("ISCSIDSC.dll")
	procGetIScsiTargetInformationW = iscsidsc.NewProc("GetIScsiTargetInformationW")
)

// TargetName (LPWSTR), DiscoveryMechanism (LPWSTR optional), InfoClass (TARGET_INFORMATION_CLASS), BufferSize (DWORD* in/out), Buffer (void* in/out)
r1, _, err := procGetIScsiTargetInformationW.Call(
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(TargetName))),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(DiscoveryMechanism))),
	uintptr(InfoClass),
	uintptr(BufferSize),
	uintptr(Buffer),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function GetIScsiTargetInformationW(
  TargetName: PWideChar;   // LPWSTR
  DiscoveryMechanism: PWideChar;   // LPWSTR optional
  InfoClass: Integer;   // TARGET_INFORMATION_CLASS
  BufferSize: Pointer;   // DWORD* in/out
  Buffer: Pointer   // void* in/out
): DWORD; stdcall;
  external 'ISCSIDSC.dll' name 'GetIScsiTargetInformationW';

result := DllCall("ISCSIDSC\GetIScsiTargetInformationW"
    , "WStr", TargetName   ; LPWSTR
    , "WStr", DiscoveryMechanism   ; LPWSTR optional
    , "Int", InfoClass   ; TARGET_INFORMATION_CLASS
    , "Ptr", BufferSize   ; DWORD* in/out
    , "Ptr", Buffer   ; void* in/out
    , "UInt")   ; return: DWORD

●GetIScsiTargetInformationW(TargetName, DiscoveryMechanism, InfoClass, BufferSize, Buffer) = DLL("ISCSIDSC.dll", "dword GetIScsiTargetInformationW(char*, char*, int, void*, void*)")
# 呼び出し: GetIScsiTargetInformationW(TargetName, DiscoveryMechanism, InfoClass, BufferSize, Buffer)
# TargetName : LPWSTR -> "char*"
# DiscoveryMechanism : LPWSTR optional -> "char*"
# InfoClass : TARGET_INFORMATION_CLASS -> "int"
# BufferSize : DWORD* in/out -> "void*"
# Buffer : void* in/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)。
# ※-W(Unicode)関数。なでしこ1はANSIのため -A 版の利用を推奨。

const std = @import("std");

extern "iscsidsc" fn GetIScsiTargetInformationW(
    TargetName: [*c]const u16, // LPWSTR
    DiscoveryMechanism: [*c]const u16, // LPWSTR optional
    InfoClass: i32, // TARGET_INFORMATION_CLASS
    BufferSize: [*c]u32, // DWORD* in/out
    Buffer: ?*anyopaque // void* in/out
) callconv(std.os.windows.WINAPI) u32;
// Unicode(-W): UTF-16LE のヌル終端バッファ([*c]const u16)を渡す。

proc GetIScsiTargetInformationW(
    TargetName: WideCString,  # LPWSTR
    DiscoveryMechanism: WideCString,  # LPWSTR optional
    InfoClass: int32,  # TARGET_INFORMATION_CLASS
    BufferSize: ptr uint32,  # DWORD* in/out
    Buffer: pointer  # void* in/out
): uint32 {.importc: "GetIScsiTargetInformationW", stdcall, dynlib: "ISCSIDSC.dll".}
# Unicode(-W): WideCString は newWideCString("...") で生成。

pragma(lib, "iscsidsc");
extern(Windows)
uint GetIScsiTargetInformationW(
    const(wchar)* TargetName,   // LPWSTR
    const(wchar)* DiscoveryMechanism,   // LPWSTR optional
    int InfoClass,   // TARGET_INFORMATION_CLASS
    uint* BufferSize,   // DWORD* in/out
    void* Buffer   // void* in/out
);

ccall((:GetIScsiTargetInformationW, "ISCSIDSC.dll"), stdcall, UInt32,
      (Cwstring, Cwstring, Int32, Ptr{UInt32}, Ptr{Cvoid}),
      TargetName, DiscoveryMechanism, InfoClass, BufferSize, Buffer)
# TargetName : LPWSTR -> Cwstring
# DiscoveryMechanism : LPWSTR optional -> Cwstring
# InfoClass : TARGET_INFORMATION_CLASS -> Int32
# BufferSize : DWORD* in/out -> Ptr{UInt32}
# Buffer : void* in/out -> Ptr{Cvoid}
# stdcall は 32bit のみ意味を持つ(x64 では無視)。
# Unicode(-W): Cwstring には transcode(UInt16, "...") 等で UTF-16 を渡す。

local ffi = require("ffi")
ffi.cdef[[
uint32_t GetIScsiTargetInformationW(
    const uint16_t* TargetName,
    const uint16_t* DiscoveryMechanism,
    int32_t InfoClass,
    uint32_t* BufferSize,
    void* Buffer);
]]
local iscsidsc = ffi.load("iscsidsc")
-- iscsidsc.GetIScsiTargetInformationW(TargetName, DiscoveryMechanism, InfoClass, BufferSize, Buffer)
-- TargetName : LPWSTR
-- DiscoveryMechanism : LPWSTR optional
-- InfoClass : TARGET_INFORMATION_CLASS
-- BufferSize : DWORD* in/out
-- Buffer : void* in/out
-- 構造体/GUIDへのポインタは cdef が通るよう void* で表記(実型は各引数コメント参照)。値渡し構造体・enum は対応する typedef を cdef に追加すること。
-- Unicode(-W): uint16_t* には UTF-16LE のバッファ(ffi.new("uint16_t[?]", ...))を渡す。

const koffi = require('koffi');
const lib = koffi.load('ISCSIDSC.dll');
const GetIScsiTargetInformationW = lib.func('__stdcall', 'GetIScsiTargetInformationW', 'uint32_t', ['str16', 'str16', 'int32_t', 'uint32_t *', 'void *']);
// GetIScsiTargetInformationW(TargetName, DiscoveryMechanism, InfoClass, BufferSize, Buffer)
// TargetName : LPWSTR -> 'str16'
// DiscoveryMechanism : LPWSTR optional -> 'str16'
// InfoClass : TARGET_INFORMATION_CLASS -> 'int32_t'
// BufferSize : DWORD* in/out -> 'uint32_t *'
// Buffer : void* in/out -> 'void *'
// 出力ポインタは koffi.out(...) で包む。構造体は koffi.struct で定義。

const lib = Deno.dlopen("ISCSIDSC.dll", {
  GetIScsiTargetInformationW: { parameters: ["buffer", "buffer", "i32", "pointer", "pointer"], result: "u32" },
});
// lib.symbols.GetIScsiTargetInformationW(TargetName, DiscoveryMechanism, InfoClass, BufferSize, Buffer)
// TargetName : LPWSTR -> "buffer"
// DiscoveryMechanism : LPWSTR optional -> "buffer"
// InfoClass : TARGET_INFORMATION_CLASS -> "i32"
// BufferSize : DWORD* in/out -> "pointer"
// Buffer : void* in/out -> "pointer"
// 文字列は "buffer"。Unicode(-W) は new TextEncoder() ではなく UTF-16LE のバイト列(末尾に \x00\x00)を Uint8Array で渡す。
// 値渡し構造体は { struct: [ ...field types... ] } を使用。

<?php
$ffi = FFI::cdef(<<<C
uint32_t GetIScsiTargetInformationW(
    const uint16_t* TargetName,
    const uint16_t* DiscoveryMechanism,
    int32_t InfoClass,
    uint32_t* BufferSize,
    void* Buffer);
C, "ISCSIDSC.dll");
// $ffi->GetIScsiTargetInformationW(TargetName, DiscoveryMechanism, InfoClass, BufferSize, Buffer);
// TargetName : LPWSTR
// DiscoveryMechanism : LPWSTR optional
// InfoClass : TARGET_INFORMATION_CLASS
// BufferSize : DWORD* in/out
// Buffer : void* in/out
// 構造体/GUIDへのポインタは cdef が通るよう void* で表記(実型は各引数コメント参照)。値渡し構造体・enum は対応する typedef を cdef に追加すること。
// WINAPI(stdcall): x64 では呼出規約が統一されるため問題なし。x86 では __stdcall 対応のラッパが必要な場合あり。

import com.sun.jna.*;
import com.sun.jna.ptr.*;
import com.sun.jna.win32.StdCallLibrary;
import com.sun.jna.win32.W32APIOptions;

public interface Iscsidsc extends StdCallLibrary {
    Iscsidsc INSTANCE = Native.load("iscsidsc", Iscsidsc.class, W32APIOptions.UNICODE_OPTIONS);
    int GetIScsiTargetInformationW(
        WString TargetName,   // LPWSTR
        WString DiscoveryMechanism,   // LPWSTR optional
        int InfoClass,   // TARGET_INFORMATION_CLASS
        IntByReference BufferSize,   // DWORD* in/out
        Pointer Buffer   // void* in/out
    );
}
// Unicode(-W): WString(入力)/char[](出力)で UTF-16 をマーシャリング。

@[Link("iscsidsc")]
lib LibISCSIDSC
  fun GetIScsiTargetInformationW = GetIScsiTargetInformationW(
    TargetName : UInt16*,   # LPWSTR
    DiscoveryMechanism : UInt16*,   # LPWSTR optional
    InfoClass : Int32,   # TARGET_INFORMATION_CLASS
    BufferSize : UInt32*,   # DWORD* in/out
    Buffer : Void*   # void* in/out
  ) : UInt32
end
# 構造体/GUID/enum は lib 内に対応する型定義が必要。
# 呼出規約: x64 は規約統一のため OK。x86(32bit)は WINAPI=stdcall だが Crystal の fun に stdcall 付与構文がなく非対応。

import 'dart:ffi';
import 'package:ffi/ffi.dart';

typedef GetIScsiTargetInformationWNative = Uint32 Function(Pointer<Utf16>, Pointer<Utf16>, Int32, Pointer<Uint32>, Pointer<Void>);
typedef GetIScsiTargetInformationWDart = int Function(Pointer<Utf16>, Pointer<Utf16>, int, Pointer<Uint32>, Pointer<Void>);
final GetIScsiTargetInformationW = DynamicLibrary.open('ISCSIDSC.dll')
    .lookupFunction<GetIScsiTargetInformationWNative, GetIScsiTargetInformationWDart>('GetIScsiTargetInformationW');
// TargetName : LPWSTR -> Pointer<Utf16>
// DiscoveryMechanism : LPWSTR optional -> Pointer<Utf16>
// InfoClass : TARGET_INFORMATION_CLASS -> Int32
// BufferSize : DWORD* in/out -> Pointer<Uint32>
// Buffer : void* in/out -> Pointer<Void>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function GetIScsiTargetInformationW(
  TargetName: PWideChar;   // LPWSTR
  DiscoveryMechanism: PWideChar;   // LPWSTR optional
  InfoClass: Integer;   // TARGET_INFORMATION_CLASS
  BufferSize: Pointer;   // DWORD* in/out
  Buffer: Pointer   // void* in/out
): DWORD; stdcall;
  external 'ISCSIDSC.dll' name 'GetIScsiTargetInformationW';

import Foreign
import Foreign.C.Types
import Foreign.C.String

foreign import stdcall safe "GetIScsiTargetInformationW"
  c_GetIScsiTargetInformationW :: CWString -> CWString -> Int32 -> Ptr Word32 -> Ptr () -> IO Word32
-- TargetName : LPWSTR -> CWString
-- DiscoveryMechanism : LPWSTR optional -> CWString
-- InfoClass : TARGET_INFORMATION_CLASS -> Int32
-- BufferSize : DWORD* in/out -> Ptr Word32
-- Buffer : void* in/out -> Ptr ()
-- 要 GHC(Windows)。stdcall は x64 では ccall として扱われる。ブロックする API は safe 呼び出し推奨。

open Ctypes
open Foreign

let getiscsitargetinformationw =
  foreign "GetIScsiTargetInformationW"
    ((ptr uint16_t) @-> (ptr uint16_t) @-> int32_t @-> (ptr uint32_t) @-> (ptr void) @-> returning uint32_t)
(* TargetName : LPWSTR -> (ptr uint16_t) *)
(* DiscoveryMechanism : LPWSTR optional -> (ptr uint16_t) *)
(* InfoClass : TARGET_INFORMATION_CLASS -> int32_t *)
(* BufferSize : DWORD* in/out -> (ptr uint32_t) *)
(* Buffer : void* in/out -> (ptr void) *)
(* foreign は cdecl 前提。x64 Windows では WINAPI と一致。構造体は ctypes structure を定義のこと。 *)

(cffi:define-foreign-library iscsidsc (t "ISCSIDSC.dll"))
(cffi:use-foreign-library iscsidsc)

(cffi:defcfun ("GetIScsiTargetInformationW" get-iscsi-target-information-w :convention :stdcall) :uint32
  (target-name (:string :encoding :utf-16le))   ; LPWSTR
  (discovery-mechanism (:string :encoding :utf-16le))   ; LPWSTR optional
  (info-class :int32)   ; TARGET_INFORMATION_CLASS
  (buffer-size :pointer)   ; DWORD* in/out
  (buffer :pointer))   ; void* in/out
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $GetIScsiTargetInformationW = Win32::API::More->new('ISCSIDSC',
    'DWORD GetIScsiTargetInformationW(LPCWSTR TargetName, LPCWSTR DiscoveryMechanism, int InfoClass, LPVOID BufferSize, LPVOID Buffer)');
# my $ret = $GetIScsiTargetInformationW->Call($TargetName, $DiscoveryMechanism, $InfoClass, $BufferSize, $Buffer);
# TargetName : LPWSTR -> LPCWSTR
# DiscoveryMechanism : LPWSTR optional -> LPCWSTR
# InfoClass : TARGET_INFORMATION_CLASS -> int
# BufferSize : DWORD* in/out -> LPVOID
# Buffer : void* in/out -> LPVOID
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。
# Unicode(-W): LPCWSTR/LPWSTR は Win32::API が UTF-16 変換を行う。