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SendScsiReadCapacity

関数

iSCSIセッション上でSCSI Read Capacityコマンドを送信する。

DLLISCSIDSC.dll呼出規約winapi対応OSWindows Vista 以降

シグネチャ

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

DWORD SendScsiReadCapacity(
    ISCSI_UNIQUE_SESSION_ID* UniqueSessionId,
    ULONGLONG Lun,
    BYTE* ScsiStatus,
    DWORD* ResponseSize,
    BYTE* ResponseBuffer,
    DWORD* SenseSize,
    BYTE* SenseBuffer
);

パラメーター

名前	型	方向	説明
UniqueSessionId	ISCSI_UNIQUE_SESSION_ID*	inout	READ CAPACITYを送る対象セッションのISCSI_UNIQUE_SESSION_IDへのポインタ。
Lun	ULONGLONG	in	対象論理ユニット番号(LUN)を指定する。
ScsiStatus	BYTE*	inout	返されたSCSIステータスを受け取るBYTEへのポインタ。
ResponseSize	DWORD*	inout	入力で応答バッファサイズ、出力で返却サイズを受け取るDWORDへのポインタ。
ResponseBuffer	BYTE*	inout	容量データを受け取るバッファへのポインタ。
SenseSize	DWORD*	inout	入力でセンスバッファサイズ、出力で返却サイズを受け取るDWORDへのポインタ。
SenseBuffer	BYTE*	inout	エラー時のセンスデータ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
#include <windows.h>

DWORD SendScsiReadCapacity(
    ISCSI_UNIQUE_SESSION_ID* UniqueSessionId,
    ULONGLONG Lun,
    BYTE* ScsiStatus,
    DWORD* ResponseSize,
    BYTE* ResponseBuffer,
    DWORD* SenseSize,
    BYTE* SenseBuffer
);

[DllImport("ISCSIDSC.dll", ExactSpelling = true)]
static extern uint SendScsiReadCapacity(
    IntPtr UniqueSessionId,   // ISCSI_UNIQUE_SESSION_ID* in/out
    ulong Lun,   // ULONGLONG
    IntPtr ScsiStatus,   // BYTE* in/out
    ref uint ResponseSize,   // DWORD* in/out
    IntPtr ResponseBuffer,   // BYTE* in/out
    ref uint SenseSize,   // DWORD* in/out
    IntPtr SenseBuffer   // BYTE* in/out
);

<DllImport("ISCSIDSC.dll", ExactSpelling:=True)>
Public Shared Function SendScsiReadCapacity(
    UniqueSessionId As IntPtr,   ' ISCSI_UNIQUE_SESSION_ID* in/out
    Lun As ULong,   ' ULONGLONG
    ScsiStatus As IntPtr,   ' BYTE* in/out
    ByRef ResponseSize As UInteger,   ' DWORD* in/out
    ResponseBuffer As IntPtr,   ' BYTE* in/out
    ByRef SenseSize As UInteger,   ' DWORD* in/out
    SenseBuffer As IntPtr   ' BYTE* in/out
) As UInteger
End Function

' UniqueSessionId : ISCSI_UNIQUE_SESSION_ID* in/out
' Lun : ULONGLONG
' ScsiStatus : BYTE* in/out
' ResponseSize : DWORD* in/out
' ResponseBuffer : BYTE* in/out
' SenseSize : DWORD* in/out
' SenseBuffer : BYTE* in/out
Declare PtrSafe Function SendScsiReadCapacity Lib "iscsidsc" ( _
    ByVal UniqueSessionId As LongPtr, _
    ByVal Lun As LongLong, _
    ByVal ScsiStatus As LongPtr, _
    ByRef ResponseSize As Long, _
    ByVal ResponseBuffer As LongPtr, _
    ByRef SenseSize As Long, _
    ByVal SenseBuffer 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

SendScsiReadCapacity = ctypes.windll.iscsidsc.SendScsiReadCapacity
SendScsiReadCapacity.restype = wintypes.DWORD
SendScsiReadCapacity.argtypes = [
    ctypes.c_void_p,  # UniqueSessionId : ISCSI_UNIQUE_SESSION_ID* in/out
    ctypes.c_ulonglong,  # Lun : ULONGLONG
    ctypes.POINTER(ctypes.c_ubyte),  # ScsiStatus : BYTE* in/out
    ctypes.POINTER(wintypes.DWORD),  # ResponseSize : DWORD* in/out
    ctypes.POINTER(ctypes.c_ubyte),  # ResponseBuffer : BYTE* in/out
    ctypes.POINTER(wintypes.DWORD),  # SenseSize : DWORD* in/out
    ctypes.POINTER(ctypes.c_ubyte),  # SenseBuffer : BYTE* in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('ISCSIDSC.dll')
SendScsiReadCapacity = Fiddle::Function.new(
  lib['SendScsiReadCapacity'],
  [
    Fiddle::TYPE_VOIDP,  # UniqueSessionId : ISCSI_UNIQUE_SESSION_ID* in/out
    -Fiddle::TYPE_LONG_LONG,  # Lun : ULONGLONG
    Fiddle::TYPE_VOIDP,  # ScsiStatus : BYTE* in/out
    Fiddle::TYPE_VOIDP,  # ResponseSize : DWORD* in/out
    Fiddle::TYPE_VOIDP,  # ResponseBuffer : BYTE* in/out
    Fiddle::TYPE_VOIDP,  # SenseSize : DWORD* in/out
    Fiddle::TYPE_VOIDP,  # SenseBuffer : BYTE* in/out
  ],
  -Fiddle::TYPE_INT)

#[link(name = "iscsidsc")]
extern "system" {
    fn SendScsiReadCapacity(
        UniqueSessionId: *mut ISCSI_UNIQUE_SESSION_ID,  // ISCSI_UNIQUE_SESSION_ID* in/out
        Lun: u64,  // ULONGLONG
        ScsiStatus: *mut u8,  // BYTE* in/out
        ResponseSize: *mut u32,  // DWORD* in/out
        ResponseBuffer: *mut u8,  // BYTE* in/out
        SenseSize: *mut u32,  // DWORD* in/out
        SenseBuffer: *mut u8  // BYTE* in/out
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("ISCSIDSC.dll")]
public static extern uint SendScsiReadCapacity(IntPtr UniqueSessionId, ulong Lun, IntPtr ScsiStatus, ref uint ResponseSize, IntPtr ResponseBuffer, ref uint SenseSize, IntPtr SenseBuffer);
"@
$api = Add-Type -MemberDefinition $sig -Name 'ISCSIDSC_SendScsiReadCapacity' -Namespace Win32 -PassThru
# $api::SendScsiReadCapacity(UniqueSessionId, Lun, ScsiStatus, ResponseSize, ResponseBuffer, SenseSize, SenseBuffer)

#uselib "ISCSIDSC.dll"
#func global SendScsiReadCapacity "SendScsiReadCapacity" sptr, sptr, sptr, sptr, sptr, sptr, sptr
; SendScsiReadCapacity varptr(UniqueSessionId), Lun, varptr(ScsiStatus), varptr(ResponseSize), varptr(ResponseBuffer), varptr(SenseSize), varptr(SenseBuffer)   ; 戻り値は stat
; UniqueSessionId : ISCSI_UNIQUE_SESSION_ID* in/out -> "sptr"
; Lun : ULONGLONG -> "sptr"
; ScsiStatus : BYTE* in/out -> "sptr"
; ResponseSize : DWORD* in/out -> "sptr"
; ResponseBuffer : BYTE* in/out -> "sptr"
; SenseSize : DWORD* in/out -> "sptr"
; SenseBuffer : BYTE* in/out -> "sptr"
; ※HSP3.7は int64 引数(64bit値渡し)に非対応です。
; ※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 SendScsiReadCapacity "SendScsiReadCapacity" var, int64, var, var, var, var, var
; res = SendScsiReadCapacity(UniqueSessionId, Lun, ScsiStatus, ResponseSize, ResponseBuffer, SenseSize, SenseBuffer)
; UniqueSessionId : ISCSI_UNIQUE_SESSION_ID* in/out -> "var"
; Lun : ULONGLONG -> "int64"
; ScsiStatus : BYTE* in/out -> "var"
; ResponseSize : DWORD* in/out -> "var"
; ResponseBuffer : BYTE* in/out -> "var"
; SenseSize : DWORD* in/out -> "var"
; SenseBuffer : BYTE* in/out -> "var"
; ※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。
; ※int64 引数の DLL 値渡しは x64 ランタイム(hsp3_64)のみ対応(x86 は未対応)。#uselib "ISCSIDSC.dll"
#cfunc global SendScsiReadCapacity "SendScsiReadCapacity" sptr, int64, sptr, sptr, sptr, sptr, sptr
; res = SendScsiReadCapacity(varptr(UniqueSessionId), Lun, varptr(ScsiStatus), varptr(ResponseSize), varptr(ResponseBuffer), varptr(SenseSize), varptr(SenseBuffer))
; UniqueSessionId : ISCSI_UNIQUE_SESSION_ID* in/out -> "sptr"
; Lun : ULONGLONG -> "int64"
; ScsiStatus : BYTE* in/out -> "sptr"
; ResponseSize : DWORD* in/out -> "sptr"
; ResponseBuffer : BYTE* in/out -> "sptr"
; SenseSize : DWORD* in/out -> "sptr"
; SenseBuffer : BYTE* in/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))。
; ※int64 引数の DLL 値渡しは x64 ランタイム(hsp3_64)のみ対応(x86 は未対応)。

出力引数:

; DWORD SendScsiReadCapacity(ISCSI_UNIQUE_SESSION_ID* UniqueSessionId, ULONGLONG Lun, BYTE* ScsiStatus, DWORD* ResponseSize, BYTE* ResponseBuffer, DWORD* SenseSize, BYTE* SenseBuffer)
#uselib "ISCSIDSC.dll"
#cfunc global SendScsiReadCapacity "SendScsiReadCapacity" var, int64, var, var, var, var, var
; res = SendScsiReadCapacity(UniqueSessionId, Lun, ScsiStatus, ResponseSize, ResponseBuffer, SenseSize, SenseBuffer)
; UniqueSessionId : ISCSI_UNIQUE_SESSION_ID* in/out -> "var"
; Lun : ULONGLONG -> "int64"
; ScsiStatus : BYTE* in/out -> "var"
; ResponseSize : DWORD* in/out -> "var"
; ResponseBuffer : BYTE* in/out -> "var"
; SenseSize : DWORD* in/out -> "var"
; SenseBuffer : BYTE* in/out -> "var"
; ※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。; DWORD SendScsiReadCapacity(ISCSI_UNIQUE_SESSION_ID* UniqueSessionId, ULONGLONG Lun, BYTE* ScsiStatus, DWORD* ResponseSize, BYTE* ResponseBuffer, DWORD* SenseSize, BYTE* SenseBuffer)
#uselib "ISCSIDSC.dll"
#cfunc global SendScsiReadCapacity "SendScsiReadCapacity" intptr, int64, intptr, intptr, intptr, intptr, intptr
; res = SendScsiReadCapacity(varptr(UniqueSessionId), Lun, varptr(ScsiStatus), varptr(ResponseSize), varptr(ResponseBuffer), varptr(SenseSize), varptr(SenseBuffer))
; UniqueSessionId : ISCSI_UNIQUE_SESSION_ID* in/out -> "intptr"
; Lun : ULONGLONG -> "int64"
; ScsiStatus : BYTE* in/out -> "intptr"
; ResponseSize : DWORD* in/out -> "intptr"
; ResponseBuffer : BYTE* in/out -> "intptr"
; SenseSize : DWORD* in/out -> "intptr"
; SenseBuffer : BYTE* in/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 (
	iscsidsc = windows.NewLazySystemDLL("ISCSIDSC.dll")
	procSendScsiReadCapacity = iscsidsc.NewProc("SendScsiReadCapacity")
)

// UniqueSessionId (ISCSI_UNIQUE_SESSION_ID* in/out), Lun (ULONGLONG), ScsiStatus (BYTE* in/out), ResponseSize (DWORD* in/out), ResponseBuffer (BYTE* in/out), SenseSize (DWORD* in/out), SenseBuffer (BYTE* in/out)
r1, _, err := procSendScsiReadCapacity.Call(
	uintptr(UniqueSessionId),
	uintptr(Lun),
	uintptr(ScsiStatus),
	uintptr(ResponseSize),
	uintptr(ResponseBuffer),
	uintptr(SenseSize),
	uintptr(SenseBuffer),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function SendScsiReadCapacity(
  UniqueSessionId: Pointer;   // ISCSI_UNIQUE_SESSION_ID* in/out
  Lun: UInt64;   // ULONGLONG
  ScsiStatus: Pointer;   // BYTE* in/out
  ResponseSize: Pointer;   // DWORD* in/out
  ResponseBuffer: Pointer;   // BYTE* in/out
  SenseSize: Pointer;   // DWORD* in/out
  SenseBuffer: Pointer   // BYTE* in/out
): DWORD; stdcall;
  external 'ISCSIDSC.dll' name 'SendScsiReadCapacity';

result := DllCall("ISCSIDSC\SendScsiReadCapacity"
    , "Ptr", UniqueSessionId   ; ISCSI_UNIQUE_SESSION_ID* in/out
    , "Int64", Lun   ; ULONGLONG
    , "Ptr", ScsiStatus   ; BYTE* in/out
    , "Ptr", ResponseSize   ; DWORD* in/out
    , "Ptr", ResponseBuffer   ; BYTE* in/out
    , "Ptr", SenseSize   ; DWORD* in/out
    , "Ptr", SenseBuffer   ; BYTE* in/out
    , "UInt")   ; return: DWORD

●SendScsiReadCapacity(UniqueSessionId, Lun, ScsiStatus, ResponseSize, ResponseBuffer, SenseSize, SenseBuffer) = DLL("ISCSIDSC.dll", "dword SendScsiReadCapacity(void*, qword, void*, void*, void*, void*, void*)")
# 呼び出し: SendScsiReadCapacity(UniqueSessionId, Lun, ScsiStatus, ResponseSize, ResponseBuffer, SenseSize, SenseBuffer)
# UniqueSessionId : ISCSI_UNIQUE_SESSION_ID* in/out -> "void*"
# Lun : ULONGLONG -> "qword"
# ScsiStatus : BYTE* in/out -> "void*"
# ResponseSize : DWORD* in/out -> "void*"
# ResponseBuffer : BYTE* in/out -> "void*"
# SenseSize : DWORD* in/out -> "void*"
# SenseBuffer : BYTE* 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 SendScsiReadCapacity(
    UniqueSessionId: [*c]ISCSI_UNIQUE_SESSION_ID, // ISCSI_UNIQUE_SESSION_ID* in/out
    Lun: u64, // ULONGLONG
    ScsiStatus: [*c]u8, // BYTE* in/out
    ResponseSize: [*c]u32, // DWORD* in/out
    ResponseBuffer: [*c]u8, // BYTE* in/out
    SenseSize: [*c]u32, // DWORD* in/out
    SenseBuffer: [*c]u8 // BYTE* in/out
) callconv(std.os.windows.WINAPI) u32;

proc SendScsiReadCapacity(
    UniqueSessionId: ptr ISCSI_UNIQUE_SESSION_ID,  # ISCSI_UNIQUE_SESSION_ID* in/out
    Lun: uint64,  # ULONGLONG
    ScsiStatus: ptr uint8,  # BYTE* in/out
    ResponseSize: ptr uint32,  # DWORD* in/out
    ResponseBuffer: ptr uint8,  # BYTE* in/out
    SenseSize: ptr uint32,  # DWORD* in/out
    SenseBuffer: ptr uint8  # BYTE* in/out
): uint32 {.importc: "SendScsiReadCapacity", stdcall, dynlib: "ISCSIDSC.dll".}

pragma(lib, "iscsidsc");
extern(Windows)
uint SendScsiReadCapacity(
    ISCSI_UNIQUE_SESSION_ID* UniqueSessionId,   // ISCSI_UNIQUE_SESSION_ID* in/out
    ulong Lun,   // ULONGLONG
    ubyte* ScsiStatus,   // BYTE* in/out
    uint* ResponseSize,   // DWORD* in/out
    ubyte* ResponseBuffer,   // BYTE* in/out
    uint* SenseSize,   // DWORD* in/out
    ubyte* SenseBuffer   // BYTE* in/out
);

ccall((:SendScsiReadCapacity, "ISCSIDSC.dll"), stdcall, UInt32,
      (Ptr{ISCSI_UNIQUE_SESSION_ID}, UInt64, Ptr{UInt8}, Ptr{UInt32}, Ptr{UInt8}, Ptr{UInt32}, Ptr{UInt8}),
      UniqueSessionId, Lun, ScsiStatus, ResponseSize, ResponseBuffer, SenseSize, SenseBuffer)
# UniqueSessionId : ISCSI_UNIQUE_SESSION_ID* in/out -> Ptr{ISCSI_UNIQUE_SESSION_ID}
# Lun : ULONGLONG -> UInt64
# ScsiStatus : BYTE* in/out -> Ptr{UInt8}
# ResponseSize : DWORD* in/out -> Ptr{UInt32}
# ResponseBuffer : BYTE* in/out -> Ptr{UInt8}
# SenseSize : DWORD* in/out -> Ptr{UInt32}
# SenseBuffer : BYTE* in/out -> Ptr{UInt8}
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
uint32_t SendScsiReadCapacity(
    void* UniqueSessionId,
    uint64_t Lun,
    uint8_t* ScsiStatus,
    uint32_t* ResponseSize,
    uint8_t* ResponseBuffer,
    uint32_t* SenseSize,
    uint8_t* SenseBuffer);
]]
local iscsidsc = ffi.load("iscsidsc")
-- iscsidsc.SendScsiReadCapacity(UniqueSessionId, Lun, ScsiStatus, ResponseSize, ResponseBuffer, SenseSize, SenseBuffer)
-- UniqueSessionId : ISCSI_UNIQUE_SESSION_ID* in/out
-- Lun : ULONGLONG
-- ScsiStatus : BYTE* in/out
-- ResponseSize : DWORD* in/out
-- ResponseBuffer : BYTE* in/out
-- SenseSize : DWORD* in/out
-- SenseBuffer : BYTE* 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 SendScsiReadCapacity = lib.func('__stdcall', 'SendScsiReadCapacity', 'uint32_t', ['void *', 'uint64_t', 'uint8_t *', 'uint32_t *', 'uint8_t *', 'uint32_t *', 'uint8_t *']);
// SendScsiReadCapacity(UniqueSessionId, Lun, ScsiStatus, ResponseSize, ResponseBuffer, SenseSize, SenseBuffer)
// UniqueSessionId : ISCSI_UNIQUE_SESSION_ID* in/out -> 'void *'
// Lun : ULONGLONG -> 'uint64_t'
// ScsiStatus : BYTE* in/out -> 'uint8_t *'
// ResponseSize : DWORD* in/out -> 'uint32_t *'
// ResponseBuffer : BYTE* in/out -> 'uint8_t *'
// SenseSize : DWORD* in/out -> 'uint32_t *'
// SenseBuffer : BYTE* in/out -> 'uint8_t *'
// 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", {
  SendScsiReadCapacity: { parameters: ["pointer", "u64", "pointer", "pointer", "pointer", "pointer", "pointer"], result: "u32" },
});
// lib.symbols.SendScsiReadCapacity(UniqueSessionId, Lun, ScsiStatus, ResponseSize, ResponseBuffer, SenseSize, SenseBuffer)
// UniqueSessionId : ISCSI_UNIQUE_SESSION_ID* in/out -> "pointer"
// Lun : ULONGLONG -> "u64"
// ScsiStatus : BYTE* in/out -> "pointer"
// ResponseSize : DWORD* in/out -> "pointer"
// ResponseBuffer : BYTE* in/out -> "pointer"
// SenseSize : DWORD* in/out -> "pointer"
// SenseBuffer : BYTE* in/out -> "pointer"
// 文字列引数は "buffer"(NUL 終端のバイト列を Uint8Array で渡す)。
// 値渡し構造体は { struct: [ ...field types... ] } を使用。

<?php
$ffi = FFI::cdef(<<<C
uint32_t SendScsiReadCapacity(
    void* UniqueSessionId,
    uint64_t Lun,
    uint8_t* ScsiStatus,
    uint32_t* ResponseSize,
    uint8_t* ResponseBuffer,
    uint32_t* SenseSize,
    uint8_t* SenseBuffer);
C, "ISCSIDSC.dll");
// $ffi->SendScsiReadCapacity(UniqueSessionId, Lun, ScsiStatus, ResponseSize, ResponseBuffer, SenseSize, SenseBuffer);
// UniqueSessionId : ISCSI_UNIQUE_SESSION_ID* in/out
// Lun : ULONGLONG
// ScsiStatus : BYTE* in/out
// ResponseSize : DWORD* in/out
// ResponseBuffer : BYTE* in/out
// SenseSize : DWORD* in/out
// SenseBuffer : BYTE* 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);
    int SendScsiReadCapacity(
        Pointer UniqueSessionId,   // ISCSI_UNIQUE_SESSION_ID* in/out
        long Lun,   // ULONGLONG
        byte[] ScsiStatus,   // BYTE* in/out
        IntByReference ResponseSize,   // DWORD* in/out
        byte[] ResponseBuffer,   // BYTE* in/out
        IntByReference SenseSize,   // DWORD* in/out
        byte[] SenseBuffer   // BYTE* in/out
    );
}

@[Link("iscsidsc")]
lib LibISCSIDSC
  fun SendScsiReadCapacity = SendScsiReadCapacity(
    UniqueSessionId : ISCSI_UNIQUE_SESSION_ID*,   # ISCSI_UNIQUE_SESSION_ID* in/out
    Lun : UInt64,   # ULONGLONG
    ScsiStatus : UInt8*,   # BYTE* in/out
    ResponseSize : UInt32*,   # DWORD* in/out
    ResponseBuffer : UInt8*,   # BYTE* in/out
    SenseSize : UInt32*,   # DWORD* in/out
    SenseBuffer : UInt8*   # BYTE* 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 SendScsiReadCapacityNative = Uint32 Function(Pointer<Void>, Uint64, Pointer<Uint8>, Pointer<Uint32>, Pointer<Uint8>, Pointer<Uint32>, Pointer<Uint8>);
typedef SendScsiReadCapacityDart = int Function(Pointer<Void>, int, Pointer<Uint8>, Pointer<Uint32>, Pointer<Uint8>, Pointer<Uint32>, Pointer<Uint8>);
final SendScsiReadCapacity = DynamicLibrary.open('ISCSIDSC.dll')
    .lookupFunction<SendScsiReadCapacityNative, SendScsiReadCapacityDart>('SendScsiReadCapacity');
// UniqueSessionId : ISCSI_UNIQUE_SESSION_ID* in/out -> Pointer<Void>
// Lun : ULONGLONG -> Uint64
// ScsiStatus : BYTE* in/out -> Pointer<Uint8>
// ResponseSize : DWORD* in/out -> Pointer<Uint32>
// ResponseBuffer : BYTE* in/out -> Pointer<Uint8>
// SenseSize : DWORD* in/out -> Pointer<Uint32>
// SenseBuffer : BYTE* in/out -> Pointer<Uint8>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function SendScsiReadCapacity(
  UniqueSessionId: Pointer;   // ISCSI_UNIQUE_SESSION_ID* in/out
  Lun: UInt64;   // ULONGLONG
  ScsiStatus: Pointer;   // BYTE* in/out
  ResponseSize: Pointer;   // DWORD* in/out
  ResponseBuffer: Pointer;   // BYTE* in/out
  SenseSize: Pointer;   // DWORD* in/out
  SenseBuffer: Pointer   // BYTE* in/out
): DWORD; stdcall;
  external 'ISCSIDSC.dll' name 'SendScsiReadCapacity';

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

foreign import stdcall safe "SendScsiReadCapacity"
  c_SendScsiReadCapacity :: Ptr () -> Word64 -> Ptr Word8 -> Ptr Word32 -> Ptr Word8 -> Ptr Word32 -> Ptr Word8 -> IO Word32
-- UniqueSessionId : ISCSI_UNIQUE_SESSION_ID* in/out -> Ptr ()
-- Lun : ULONGLONG -> Word64
-- ScsiStatus : BYTE* in/out -> Ptr Word8
-- ResponseSize : DWORD* in/out -> Ptr Word32
-- ResponseBuffer : BYTE* in/out -> Ptr Word8
-- SenseSize : DWORD* in/out -> Ptr Word32
-- SenseBuffer : BYTE* in/out -> Ptr Word8
-- 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 sendscsireadcapacity =
  foreign "SendScsiReadCapacity"
    ((ptr void) @-> uint64_t @-> (ptr uint8_t) @-> (ptr uint32_t) @-> (ptr uint8_t) @-> (ptr uint32_t) @-> (ptr uint8_t) @-> returning uint32_t)
(* UniqueSessionId : ISCSI_UNIQUE_SESSION_ID* in/out -> (ptr void) *)
(* Lun : ULONGLONG -> uint64_t *)
(* ScsiStatus : BYTE* in/out -> (ptr uint8_t) *)
(* ResponseSize : DWORD* in/out -> (ptr uint32_t) *)
(* ResponseBuffer : BYTE* in/out -> (ptr uint8_t) *)
(* SenseSize : DWORD* in/out -> (ptr uint32_t) *)
(* SenseBuffer : BYTE* in/out -> (ptr uint8_t) *)
(* 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 ("SendScsiReadCapacity" send-scsi-read-capacity :convention :stdcall) :uint32
  (unique-session-id :pointer)   ; ISCSI_UNIQUE_SESSION_ID* in/out
  (lun :uint64)   ; ULONGLONG
  (scsi-status :pointer)   ; BYTE* in/out
  (response-size :pointer)   ; DWORD* in/out
  (response-buffer :pointer)   ; BYTE* in/out
  (sense-size :pointer)   ; DWORD* in/out
  (sense-buffer :pointer))   ; BYTE* in/out
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $SendScsiReadCapacity = Win32::API::More->new('ISCSIDSC',
    'DWORD SendScsiReadCapacity(LPVOID UniqueSessionId, UINT64 Lun, LPVOID ScsiStatus, LPVOID ResponseSize, LPVOID ResponseBuffer, LPVOID SenseSize, LPVOID SenseBuffer)');
# my $ret = $SendScsiReadCapacity->Call($UniqueSessionId, $Lun, $ScsiStatus, $ResponseSize, $ResponseBuffer, $SenseSize, $SenseBuffer);
# UniqueSessionId : ISCSI_UNIQUE_SESSION_ID* in/out -> LPVOID
# Lun : ULONGLONG -> UINT64
# ScsiStatus : BYTE* in/out -> LPVOID
# ResponseSize : DWORD* in/out -> LPVOID
# ResponseBuffer : BYTE* in/out -> LPVOID
# SenseSize : DWORD* in/out -> LPVOID
# SenseBuffer : BYTE* 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。

SendScsiReadCapacity

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