From f3e8046eff473aa9bf940b7fbd156cf3dfbfa352 Mon Sep 17 00:00:00 2001
From: Jesse Luehrs <doy@tozt.net>
Date: Tue, 23 Feb 2021 00:17:01 -0500
Subject: also create separate pty structs per backend

for now, they are identical, but i will change them to be specialized
next
---
 src/pty/tokio.rs | 36 ++++++++++++++++++++++++++++++++++++
 1 file changed, 36 insertions(+)
 create mode 100644 src/pty/tokio.rs

(limited to 'src/pty/tokio.rs')

diff --git a/src/pty/tokio.rs b/src/pty/tokio.rs
new file mode 100644
index 0000000..84097f9
--- /dev/null
+++ b/src/pty/tokio.rs
@@ -0,0 +1,36 @@
+use crate::error::*;
+
+use std::os::unix::io::FromRawFd as _;
+
+pub struct Pty {
+    pt: std::fs::File,
+    ptsname: std::path::PathBuf,
+}
+
+impl super::Pty for Pty {
+    fn new() -> Result<Self> {
+        let (pt_fd, ptsname) = super::create_pt()?;
+
+        // safe because posix_openpt (or the previous functions operating on
+        // the result) would have returned an Err (causing us to return early)
+        // if the file descriptor was invalid. additionally, into_raw_fd gives
+        // up ownership over the file descriptor, allowing the newly created
+        // File object to take full ownership.
+        let pt = unsafe { std::fs::File::from_raw_fd(pt_fd) };
+
+        Ok(Self { pt, ptsname })
+    }
+
+    fn pt(&self) -> &std::fs::File {
+        &self.pt
+    }
+
+    fn pts(&self) -> Result<std::fs::File> {
+        let fh = std::fs::OpenOptions::new()
+            .read(true)
+            .write(true)
+            .open(&self.ptsname)
+            .map_err(|e| Error::OpenPts(self.ptsname.clone(), e))?;
+        Ok(fh)
+    }
+}
-- 
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