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GetIScsiTargetInformationA

関数
指定iSCSIターゲットの情報を取得する（ANSI版）。
DLLISCSIDSC.dll文字セットANSI (-A)呼出規約winapi対応OSWindows Vista 以降
📘 Microsoft Learn (日本語) · English

シグネチャ

// ISCSIDSC.dll  (ANSI / -A)
#include <windows.h>

DWORD GetIScsiTargetInformationA(
    LPSTR TargetName,
    LPSTR DiscoveryMechanism,   // optional
    TARGET_INFORMATION_CLASS InfoClass,
    DWORD* BufferSize,
    void* Buffer
);

パラメーター

名前型方向説明
TargetNameLPSTRin情報を取得する対象iSCSIターゲットの名前を指す。
DiscoveryMechanismLPSTRinoptionalターゲットが発見された探索メカニズム名を指す。NULL可。
InfoClassTARGET_INFORMATION_CLASSin取得する情報種別を指定するTARGET_INFORMATION_CLASS列挙値。
BufferSizeDWORD*inout入力でBufferのサイズ、出力で必要サイズを受け取るDWORDへのポインタ。
Buffervoid*inout取得した情報を受け取るバッファへのポインタ。

戻り値の型: DWORD

各言語での呼び出し定義

// ISCSIDSC.dll  (ANSI / -A)
#include <windows.h>

DWORD GetIScsiTargetInformationA(
    LPSTR TargetName,
    LPSTR DiscoveryMechanism,   // optional
    TARGET_INFORMATION_CLASS InfoClass,
    DWORD* BufferSize,
    void* Buffer
);
[DllImport("ISCSIDSC.dll", CharSet = CharSet.Ansi, ExactSpelling = true)]
static extern uint GetIScsiTargetInformationA(
    [MarshalAs(UnmanagedType.LPStr)] string TargetName,   // LPSTR
    [MarshalAs(UnmanagedType.LPStr)] string DiscoveryMechanism,   // LPSTR optional
    int InfoClass,   // TARGET_INFORMATION_CLASS
    ref uint BufferSize,   // DWORD* in/out
    IntPtr Buffer   // void* in/out
);
<DllImport("ISCSIDSC.dll", CharSet:=CharSet.Ansi, ExactSpelling:=True)>
Public Shared Function GetIScsiTargetInformationA(
    <MarshalAs(UnmanagedType.LPStr)> TargetName As String,   ' LPSTR
    <MarshalAs(UnmanagedType.LPStr)> DiscoveryMechanism As String,   ' LPSTR 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 : LPSTR
' DiscoveryMechanism : LPSTR optional
' InfoClass : TARGET_INFORMATION_CLASS
' BufferSize : DWORD* in/out
' Buffer : void* in/out
Declare PtrSafe Function GetIScsiTargetInformationA Lib "iscsidsc" ( _
    ByVal TargetName As String, _
    ByVal DiscoveryMechanism As String, _
    ByVal InfoClass As Long, _
    ByRef BufferSize As Long, _
    ByVal Buffer 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

GetIScsiTargetInformationA = ctypes.windll.iscsidsc.GetIScsiTargetInformationA
GetIScsiTargetInformationA.restype = wintypes.DWORD
GetIScsiTargetInformationA.argtypes = [
    wintypes.LPCSTR,  # TargetName : LPSTR
    wintypes.LPCSTR,  # DiscoveryMechanism : LPSTR 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')
GetIScsiTargetInformationA = Fiddle::Function.new(
  lib['GetIScsiTargetInformationA'],
  [
    Fiddle::TYPE_VOIDP,  # TargetName : LPSTR
    Fiddle::TYPE_VOIDP,  # DiscoveryMechanism : LPSTR 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)
#[link(name = "iscsidsc")]
extern "system" {
    fn GetIScsiTargetInformationA(
        TargetName: *mut u8,  // LPSTR
        DiscoveryMechanism: *mut u8,  // LPSTR 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.Ansi)]
public static extern uint GetIScsiTargetInformationA([MarshalAs(UnmanagedType.LPStr)] string TargetName, [MarshalAs(UnmanagedType.LPStr)] string DiscoveryMechanism, int InfoClass, ref uint BufferSize, IntPtr Buffer);
"@
$api = Add-Type -MemberDefinition $sig -Name 'ISCSIDSC_GetIScsiTargetInformationA' -Namespace Win32 -PassThru
# $api::GetIScsiTargetInformationA(TargetName, DiscoveryMechanism, InfoClass, BufferSize, Buffer)
#uselib "ISCSIDSC.dll"
#func global GetIScsiTargetInformationA "GetIScsiTargetInformationA" sptr, sptr, sptr, sptr, sptr
; GetIScsiTargetInformationA TargetName, DiscoveryMechanism, InfoClass, varptr(BufferSize), Buffer   ; 戻り値は stat
; TargetName : LPSTR -> "sptr"
; DiscoveryMechanism : LPSTR optional -> "sptr"
; InfoClass : TARGET_INFORMATION_CLASS -> "sptr"
; BufferSize : DWORD* in/out -> "sptr"
; Buffer : void* in/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 "ISCSIDSC.dll"
#cfunc global GetIScsiTargetInformationA "GetIScsiTargetInformationA" str, str, int, var, sptr
; res = GetIScsiTargetInformationA(TargetName, DiscoveryMechanism, InfoClass, BufferSize, Buffer)
; TargetName : LPSTR -> "str"
; DiscoveryMechanism : LPSTR optional -> "str"
; InfoClass : TARGET_INFORMATION_CLASS -> "int"
; BufferSize : DWORD* in/out -> "var"
; Buffer : void* in/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。
出力引数: 
; DWORD GetIScsiTargetInformationA(LPSTR TargetName, LPSTR DiscoveryMechanism, TARGET_INFORMATION_CLASS InfoClass, DWORD* BufferSize, void* Buffer)
#uselib "ISCSIDSC.dll"
#cfunc global GetIScsiTargetInformationA "GetIScsiTargetInformationA" str, str, int, var, intptr
; res = GetIScsiTargetInformationA(TargetName, DiscoveryMechanism, InfoClass, BufferSize, Buffer)
; TargetName : LPSTR -> "str"
; DiscoveryMechanism : LPSTR optional -> "str"
; InfoClass : TARGET_INFORMATION_CLASS -> "int"
; BufferSize : DWORD* in/out -> "var"
; Buffer : void* in/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。
import (
	"golang.org/x/sys/windows"
	"unsafe"
)

var (
	iscsidsc = windows.NewLazySystemDLL("ISCSIDSC.dll")
	procGetIScsiTargetInformationA = iscsidsc.NewProc("GetIScsiTargetInformationA")
)

// TargetName (LPSTR), DiscoveryMechanism (LPSTR optional), InfoClass (TARGET_INFORMATION_CLASS), BufferSize (DWORD* in/out), Buffer (void* in/out)
r1, _, err := procGetIScsiTargetInformationA.Call(
	uintptr(unsafe.Pointer(windows.BytePtrFromString(TargetName))),
	uintptr(unsafe.Pointer(windows.BytePtrFromString(DiscoveryMechanism))),
	uintptr(InfoClass),
	uintptr(BufferSize),
	uintptr(Buffer),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD
function GetIScsiTargetInformationA(
  TargetName: PAnsiChar;   // LPSTR
  DiscoveryMechanism: PAnsiChar;   // LPSTR optional
  InfoClass: Integer;   // TARGET_INFORMATION_CLASS
  BufferSize: Pointer;   // DWORD* in/out
  Buffer: Pointer   // void* in/out
): DWORD; stdcall;
  external 'ISCSIDSC.dll' name 'GetIScsiTargetInformationA';
result := DllCall("ISCSIDSC\GetIScsiTargetInformationA"
    , "AStr", TargetName   ; LPSTR
    , "AStr", DiscoveryMechanism   ; LPSTR optional
    , "Int", InfoClass   ; TARGET_INFORMATION_CLASS
    , "Ptr", BufferSize   ; DWORD* in/out
    , "Ptr", Buffer   ; void* in/out
    , "UInt")   ; return: DWORD
●GetIScsiTargetInformationA(TargetName, DiscoveryMechanism, InfoClass, BufferSize, Buffer) = DLL("ISCSIDSC.dll", "dword GetIScsiTargetInformationA(char*, char*, int, void*, void*)")
# 呼び出し: GetIScsiTargetInformationA(TargetName, DiscoveryMechanism, InfoClass, BufferSize, Buffer)
# TargetName : LPSTR -> "char*"
# DiscoveryMechanism : LPSTR 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)。
const std = @import("std");

extern "iscsidsc" fn GetIScsiTargetInformationA(
    TargetName: [*c]const u8, // LPSTR
    DiscoveryMechanism: [*c]const u8, // LPSTR optional
    InfoClass: i32, // TARGET_INFORMATION_CLASS
    BufferSize: [*c]u32, // DWORD* in/out
    Buffer: ?*anyopaque // void* in/out
) callconv(std.os.windows.WINAPI) u32;
proc GetIScsiTargetInformationA(
    TargetName: cstring,  # LPSTR
    DiscoveryMechanism: cstring,  # LPSTR optional
    InfoClass: int32,  # TARGET_INFORMATION_CLASS
    BufferSize: ptr uint32,  # DWORD* in/out
    Buffer: pointer  # void* in/out
): uint32 {.importc: "GetIScsiTargetInformationA", stdcall, dynlib: "ISCSIDSC.dll".}
pragma(lib, "iscsidsc");
extern(Windows)
uint GetIScsiTargetInformationA(
    const(char)* TargetName,   // LPSTR
    const(char)* DiscoveryMechanism,   // LPSTR optional
    int InfoClass,   // TARGET_INFORMATION_CLASS
    uint* BufferSize,   // DWORD* in/out
    void* Buffer   // void* in/out
);
ccall((:GetIScsiTargetInformationA, "ISCSIDSC.dll"), stdcall, UInt32,
      (Cstring, Cstring, Int32, Ptr{UInt32}, Ptr{Cvoid}),
      TargetName, DiscoveryMechanism, InfoClass, BufferSize, Buffer)
# TargetName : LPSTR -> Cstring
# DiscoveryMechanism : LPSTR optional -> Cstring
# 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)。
local ffi = require("ffi")
ffi.cdef[[
uint32_t GetIScsiTargetInformationA(
    const char* TargetName,
    const char* DiscoveryMechanism,
    int32_t InfoClass,
    uint32_t* BufferSize,
    void* Buffer);
]]
local iscsidsc = ffi.load("iscsidsc")
-- iscsidsc.GetIScsiTargetInformationA(TargetName, DiscoveryMechanism, InfoClass, BufferSize, Buffer)
-- TargetName : LPSTR
-- DiscoveryMechanism : LPSTR 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。
const koffi = require('koffi');
const lib = koffi.load('ISCSIDSC.dll');
const GetIScsiTargetInformationA = lib.func('__stdcall', 'GetIScsiTargetInformationA', 'uint32_t', ['str', 'str', 'int32_t', 'uint32_t *', 'void *']);
// GetIScsiTargetInformationA(TargetName, DiscoveryMechanism, InfoClass, BufferSize, Buffer)
// TargetName : LPSTR -> 'str'
// DiscoveryMechanism : LPSTR optional -> 'str'
// 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", {
  GetIScsiTargetInformationA: { parameters: ["buffer", "buffer", "i32", "pointer", "pointer"], result: "u32" },
});
// lib.symbols.GetIScsiTargetInformationA(TargetName, DiscoveryMechanism, InfoClass, BufferSize, Buffer)
// TargetName : LPSTR -> "buffer"
// DiscoveryMechanism : LPSTR optional -> "buffer"
// InfoClass : TARGET_INFORMATION_CLASS -> "i32"
// BufferSize : DWORD* in/out -> "pointer"
// Buffer : void* in/out -> "pointer"
// 文字列は "buffer"。ANSI(-A) は new TextEncoder() で UTF-8/ANSI バイト列(末尾に \x00)を渡す。
// 値渡し構造体は { struct: [ ...field types... ] } を使用。
<?php
$ffi = FFI::cdef(<<<C
uint32_t GetIScsiTargetInformationA(
    const char* TargetName,
    const char* DiscoveryMechanism,
    int32_t InfoClass,
    uint32_t* BufferSize,
    void* Buffer);
C, "ISCSIDSC.dll");
// $ffi->GetIScsiTargetInformationA(TargetName, DiscoveryMechanism, InfoClass, BufferSize, Buffer);
// TargetName : LPSTR
// DiscoveryMechanism : LPSTR 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.ASCII_OPTIONS);
    int GetIScsiTargetInformationA(
        String TargetName,   // LPSTR
        String DiscoveryMechanism,   // LPSTR optional
        int InfoClass,   // TARGET_INFORMATION_CLASS
        IntByReference BufferSize,   // DWORD* in/out
        Pointer Buffer   // void* in/out
    );
}
@[Link("iscsidsc")]
lib LibISCSIDSC
  fun GetIScsiTargetInformationA = GetIScsiTargetInformationA(
    TargetName : UInt8*,   # LPSTR
    DiscoveryMechanism : UInt8*,   # LPSTR 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 GetIScsiTargetInformationANative = Uint32 Function(Pointer<Utf8>, Pointer<Utf8>, Int32, Pointer<Uint32>, Pointer<Void>);
typedef GetIScsiTargetInformationADart = int Function(Pointer<Utf8>, Pointer<Utf8>, int, Pointer<Uint32>, Pointer<Void>);
final GetIScsiTargetInformationA = DynamicLibrary.open('ISCSIDSC.dll')
    .lookupFunction<GetIScsiTargetInformationANative, GetIScsiTargetInformationADart>('GetIScsiTargetInformationA');
// TargetName : LPSTR -> Pointer<Utf8>
// DiscoveryMechanism : LPSTR optional -> Pointer<Utf8>
// 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 GetIScsiTargetInformationA(
  TargetName: PAnsiChar;   // LPSTR
  DiscoveryMechanism: PAnsiChar;   // LPSTR optional
  InfoClass: Integer;   // TARGET_INFORMATION_CLASS
  BufferSize: Pointer;   // DWORD* in/out
  Buffer: Pointer   // void* in/out
): DWORD; stdcall;
  external 'ISCSIDSC.dll' name 'GetIScsiTargetInformationA';
import Foreign
import Foreign.C.Types
import Foreign.C.String

foreign import stdcall safe "GetIScsiTargetInformationA"
  c_GetIScsiTargetInformationA :: CString -> CString -> Int32 -> Ptr Word32 -> Ptr () -> IO Word32
-- TargetName : LPSTR -> CString
-- DiscoveryMechanism : LPSTR optional -> CString
-- 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 getiscsitargetinformationa =
  foreign "GetIScsiTargetInformationA"
    (string @-> string @-> int32_t @-> (ptr uint32_t) @-> (ptr void) @-> returning uint32_t)
(* TargetName : LPSTR -> string *)
(* DiscoveryMechanism : LPSTR optional -> string *)
(* 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 ("GetIScsiTargetInformationA" get-iscsi-target-information-a :convention :stdcall) :uint32
  (target-name :string)   ; LPSTR
  (discovery-mechanism :string)   ; LPSTR 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 $GetIScsiTargetInformationA = Win32::API::More->new('ISCSIDSC',
    'DWORD GetIScsiTargetInformationA(LPCSTR TargetName, LPCSTR DiscoveryMechanism, int InfoClass, LPVOID BufferSize, LPVOID Buffer)');
# my $ret = $GetIScsiTargetInformationA->Call($TargetName, $DiscoveryMechanism, $InfoClass, $BufferSize, $Buffer);
# TargetName : LPSTR -> LPCSTR
# DiscoveryMechanism : LPSTR optional -> LPCSTR
# 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。

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