is_superuser 1.0.1

A cross-platform solution for finding out if the running user is a superuser.
Documentation 
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#![cfg(windows)]
extern crate winapi;

use std::mem;
use winapi::shared::minwindef::DWORD;
use winapi::shared::minwindef::LPVOID;
use winapi::um::processthreadsapi::GetCurrentProcess;
use winapi::um::processthreadsapi::OpenProcessToken;
use winapi::um::securitybaseapi::GetTokenInformation;
use winapi::um::winnt::TokenElevation;
use winapi::um::winnt::HANDLE;
use winapi::um::winnt::TOKEN_ELEVATION;
use winapi::um::winnt::TOKEN_QUERY;
/// Returns true if the current user is an Administrator, or false otherwise
pub fn is_superuser() -> bool {
    unsafe {
        let mut current_token_ptr: HANDLE = mem::zeroed();
        let mut token_elevation: TOKEN_ELEVATION = mem::zeroed();
        let token_elevation_type_ptr: *mut TOKEN_ELEVATION = &mut token_elevation;
        let mut size: DWORD = 0;

        let result = OpenProcessToken(GetCurrentProcess(), TOKEN_QUERY, &mut current_token_ptr);
        if result != 0 {
            let token_info = GetTokenInformation(
                current_token_ptr,
                TokenElevation,
                token_elevation_type_ptr as LPVOID,
                mem::size_of::<winapi::um::winnt::TOKEN_ELEVATION_TYPE>() as u32,
                &mut size
                );
            if result != 0 {
                return token_elevation.TokenIsElevated != 0;
            }
        }
    }
    false
}