feat: send notifications and panel Fds

src/notifications.rs

@@ -0,0 +1,32 @@
+use color_eyre::eyre::Context;
+use color_eyre::Result;
+use std::os::fd::OwnedFd;
+use tokio::net::UnixStream;
+
+pub fn create_socket() -> Result<(OwnedFd, OwnedFd)> {
+	// Create a new pair of unnamed Unix sockets
+	let (sock_1, sock_2) = UnixStream::pair().wrap_err("failed to create socket pair")?;
+
+	// Turn the other socket into a non-blocking fd, which we can pass to the child
+	// process
+	let fd_1 = {
+		let std_stream = sock_1
+			.into_std()
+			.wrap_err("failed to convert client socket to std socket")?;
+		std_stream
+			.set_nonblocking(false)
+			.wrap_err("failed to mark client socket as blocking")?;
+		OwnedFd::from(std_stream)
+	};
+
+	let fd_2 = {
+		let std_stream = sock_2
+			.into_std()
+			.wrap_err("failed to convert client socket to std socket")?;
+		std_stream
+			.set_nonblocking(false)
+			.wrap_err("failed to mark client socket as blocking")?;
+		OwnedFd::from(std_stream)
+	};
+	Ok((fd_1, fd_2))
+}