SetFileSecurityW

// ADVAPI32.dll  (Unicode / -W)
#include <windows.h>

BOOL SetFileSecurityW(
    LPCWSTR lpFileName,
    OBJECT_SECURITY_INFORMATION SecurityInformation,
    PSECURITY_DESCRIPTOR pSecurityDescriptor
);

<DllImport("ADVAPI32.dll", CharSet:=CharSet.Unicode, ExactSpelling:=True)>
Public Shared Function SetFileSecurityW(
    <MarshalAs(UnmanagedType.LPWStr)> lpFileName As String,   ' LPCWSTR
    SecurityInformation As UInteger,   ' OBJECT_SECURITY_INFORMATION
    pSecurityDescriptor As IntPtr   ' PSECURITY_DESCRIPTOR
) As Boolean
End Function

' lpFileName : LPCWSTR
' SecurityInformation : OBJECT_SECURITY_INFORMATION
' pSecurityDescriptor : PSECURITY_DESCRIPTOR
Declare PtrSafe Function SetFileSecurityW Lib "advapi32" ( _
    ByVal lpFileName As LongPtr, _
    ByVal SecurityInformation As Long, _
    ByVal pSecurityDescriptor 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

SetFileSecurityW = ctypes.windll.advapi32.SetFileSecurityW
SetFileSecurityW.restype = wintypes.BOOL
SetFileSecurityW.argtypes = [
    wintypes.LPCWSTR,  # lpFileName : LPCWSTR
    wintypes.DWORD,  # SecurityInformation : OBJECT_SECURITY_INFORMATION
    wintypes.HANDLE,  # pSecurityDescriptor : PSECURITY_DESCRIPTOR
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('ADVAPI32.dll')
SetFileSecurityW = Fiddle::Function.new(
  lib['SetFileSecurityW'],
  [
    Fiddle::TYPE_VOIDP,  # lpFileName : LPCWSTR
    -Fiddle::TYPE_INT,  # SecurityInformation : OBJECT_SECURITY_INFORMATION
    Fiddle::TYPE_VOIDP,  # pSecurityDescriptor : PSECURITY_DESCRIPTOR
  ],
  Fiddle::TYPE_INT)
# Wide strings: pass str.encode("UTF-16LE") + "\x00\x00"

#[link(name = "advapi32")]
extern "system" {
    fn SetFileSecurityW(
        lpFileName: *const u16,  // LPCWSTR
        SecurityInformation: u32,  // OBJECT_SECURITY_INFORMATION
        pSecurityDescriptor: *mut core::ffi::c_void  // PSECURITY_DESCRIPTOR
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("ADVAPI32.dll", CharSet = CharSet.Unicode)]
public static extern bool SetFileSecurityW([MarshalAs(UnmanagedType.LPWStr)] string lpFileName, uint SecurityInformation, IntPtr pSecurityDescriptor);
"@
$api = Add-Type -MemberDefinition $sig -Name 'ADVAPI32_SetFileSecurityW' -Namespace Win32 -PassThru
# $api::SetFileSecurityW(lpFileName, SecurityInformation, pSecurityDescriptor)

#uselib "ADVAPI32.dll"
#func global SetFileSecurityW "SetFileSecurityW" wptr, wptr, wptr
; SetFileSecurityW lpFileName, SecurityInformation, pSecurityDescriptor   ; 戻り値は stat
; lpFileName : LPCWSTR -> "wptr"
; SecurityInformation : OBJECT_SECURITY_INFORMATION -> "wptr"
; pSecurityDescriptor : PSECURITY_DESCRIPTOR -> "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。

#uselib "ADVAPI32.dll"
#cfunc global SetFileSecurityW "SetFileSecurityW" wstr, int, sptr
; res = SetFileSecurityW(lpFileName, SecurityInformation, pSecurityDescriptor)
; lpFileName : LPCWSTR -> "wstr"
; SecurityInformation : OBJECT_SECURITY_INFORMATION -> "int"
; pSecurityDescriptor : PSECURITY_DESCRIPTOR -> "sptr"

; BOOL SetFileSecurityW(LPCWSTR lpFileName, OBJECT_SECURITY_INFORMATION SecurityInformation, PSECURITY_DESCRIPTOR pSecurityDescriptor)
#uselib "ADVAPI32.dll"
#cfunc global SetFileSecurityW "SetFileSecurityW" wstr, int, intptr
; res = SetFileSecurityW(lpFileName, SecurityInformation, pSecurityDescriptor)
; lpFileName : LPCWSTR -> "wstr"
; SecurityInformation : OBJECT_SECURITY_INFORMATION -> "int"
; pSecurityDescriptor : PSECURITY_DESCRIPTOR -> "intptr"

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

var (
	advapi32 = windows.NewLazySystemDLL("ADVAPI32.dll")
	procSetFileSecurityW = advapi32.NewProc("SetFileSecurityW")
)

// lpFileName (LPCWSTR), SecurityInformation (OBJECT_SECURITY_INFORMATION), pSecurityDescriptor (PSECURITY_DESCRIPTOR)
r1, _, err := procSetFileSecurityW.Call(
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(lpFileName))),
	uintptr(SecurityInformation),
	uintptr(pSecurityDescriptor),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function SetFileSecurityW(
  lpFileName: PWideChar;   // LPCWSTR
  SecurityInformation: DWORD;   // OBJECT_SECURITY_INFORMATION
  pSecurityDescriptor: THandle   // PSECURITY_DESCRIPTOR
): BOOL; stdcall;
  external 'ADVAPI32.dll' name 'SetFileSecurityW';

result := DllCall("ADVAPI32\SetFileSecurityW"
    , "WStr", lpFileName   ; LPCWSTR
    , "UInt", SecurityInformation   ; OBJECT_SECURITY_INFORMATION
    , "Ptr", pSecurityDescriptor   ; PSECURITY_DESCRIPTOR
    , "Int")   ; return: BOOL

●SetFileSecurityW(lpFileName, SecurityInformation, pSecurityDescriptor) = DLL("ADVAPI32.dll", "bool SetFileSecurityW(char*, dword, void*)")
# 呼び出し: SetFileSecurityW(lpFileName, SecurityInformation, pSecurityDescriptor)
# lpFileName : LPCWSTR -> "char*"
# SecurityInformation : OBJECT_SECURITY_INFORMATION -> "dword"
# pSecurityDescriptor : PSECURITY_DESCRIPTOR -> "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。