1 files changed, 27 insertions, 0 deletions
diff --git a/third_party/rust/tokio/src/fs/copy.rs b/third_party/rust/tokio/src/fs/copy.rs
new file mode 100644
index 0000000000..b47f287285
--- /dev/null
+++ b/third_party/rust/tokio/src/fs/copy.rs
@@ -0,0 +1,27 @@
+use crate::fs::asyncify;
+use std::path::Path;
+
+/// Copies the contents of one file to another. This function will also copy the permission bits
+/// of the original file to the destination file.
+/// This function will overwrite the contents of to.
+///
+/// This is the async equivalent of [`std::fs::copy`][std].
+///
+/// [std]: fn@std::fs::copy
+///
+/// # Examples
+///
+/// ```no_run
+/// use tokio::fs;
+///
+/// # async fn dox() -> std::io::Result<()> {
+/// fs::copy("foo.txt", "bar.txt").await?;
+/// # Ok(())
+/// # }
+/// ```
+
+pub async fn copy(from: impl AsRef<Path>, to: impl AsRef<Path>) -> Result<u64, std::io::Error> {
+    let from = from.as_ref().to_owned();
+    let to = to.as_ref().to_owned();
+    asyncify(|| std::fs::copy(from, to)).await
+}