fs: move into `tokio` (#1672)

A step towards collapsing Tokio sub crates into a single `tokio`
crate (#1318).

The `fs` implementation is now provided by the main `tokio` crate. The
`fs` functionality may still be excluded from the build by skipping the
`fs` feature flag.

1 files changed, 15 insertions, 0 deletions

diff --git a/tokio/src/fs/set_permissions.rs b/tokio/src/fs/set_permissions.rs
new file mode 100644
index 00000000..6e640544
--- /dev/null
+++ b/tokio/src/fs/set_permissions.rs
@@ -0,0 +1,15 @@
+use crate::fs::asyncify;
+
+use std::fs::Permissions;
+use std::io;
+use std::path::Path;
+
+/// Changes the permissions found on a file or a directory.
+///
+/// This is an async version of [`std::fs::set_permissions`][std]
+///
+/// [std]: https://doc.rust-lang.org/std/fs/fn.set_permissions.html
+pub async fn set_permissions<P: AsRef<Path>>(path: P, perm: Permissions) -> io::Result<()> {
+    let path = path.as_ref().to_owned();
+    asyncify(|| std::fs::set_permissions(path, perm)).await
+}