tokio_fs/
hard_link.rs

1use std::fs;
2use std::io;
3use std::path::Path;
4
5use futures::{Future, Poll};
6
7/// Creates a new hard link on the filesystem.
8///
9/// The `dst` path will be a link pointing to the `src` path. Note that systems
10/// often require these two paths to both be located on the same filesystem.
11///
12/// This is an async version of [`std::fs::hard_link`][std]
13///
14/// [std]: https://doc.rust-lang.org/std/fs/fn.hard_link.html
15pub fn hard_link<P: AsRef<Path>, Q: AsRef<Path>>(src: P, dst: Q) -> HardLinkFuture<P, Q> {
16    HardLinkFuture::new(src, dst)
17}
18
19/// Future returned by `hard_link`.
20#[derive(Debug)]
21pub struct HardLinkFuture<P, Q>
22where
23    P: AsRef<Path>,
24    Q: AsRef<Path>,
25{
26    src: P,
27    dst: Q,
28}
29
30impl<P, Q> HardLinkFuture<P, Q>
31where
32    P: AsRef<Path>,
33    Q: AsRef<Path>,
34{
35    fn new(src: P, dst: Q) -> HardLinkFuture<P, Q> {
36        HardLinkFuture { src: src, dst: dst }
37    }
38}
39
40impl<P, Q> Future for HardLinkFuture<P, Q>
41where
42    P: AsRef<Path>,
43    Q: AsRef<Path>,
44{
45    type Item = ();
46    type Error = io::Error;
47
48    fn poll(&mut self) -> Poll<Self::Item, Self::Error> {
49        ::blocking_io(|| fs::hard_link(&self.src, &self.dst))
50    }
51}
tokio_fs/hard_link.rs

tokio_fs/
hard_link.rs
