vfs: open() for pty halves

kernel/libk/src/vfs/file/mod.rs

@@ -172,6 +172,22 @@ impl File {
         ))
     }
 
+    pub fn open_pty_master(pty: Arc<PseudoTerminalMaster>, node: Arc<Node>) -> Arc<Self> {
+        Arc::new(Self::PtyMaster(TerminalHalfWrapper {
+            blocking: AtomicBool::new(true),
+            half: pty,
+            node,
+        }))
+    }
+
+    pub fn open_pty_slave(pty: Arc<PseudoTerminalSlave>, node: Arc<Node>) -> Arc<Self> {
+        Arc::new(Self::PtySlave(TerminalHalfWrapper {
+            blocking: AtomicBool::new(true),
+            half: pty,
+            node,
+        }))
+    }
+
     /// Creates a new [TimerFile]-backed File
     pub fn new_timer(options: TimerOptions) -> FileRef {
         let repeat = options.contains(TimerOptions::REPEAT);

kernel/libk/src/vfs/node/ops.rs

@@ -40,7 +40,14 @@ impl Node {
             // TODO: maybe merge open_directory and open?
             NodeImpl::Directory(_) => Err(Error::IsADirectory),
             NodeImpl::Symlink(_) => todo!(),
-            NodeImpl::PseudoTerminalSlave(_) | NodeImpl::PseudoTerminalMaster(_) => todo!(),
+            NodeImpl::PseudoTerminalSlave(pty) => {
+                let pty = pty.upgrade().ok_or(Error::DoesNotExist)?;
+                Ok(File::open_pty_slave(pty, self.clone()))
+            }
+            NodeImpl::PseudoTerminalMaster(pty) => {
+                let pty = pty.upgrade().ok_or(Error::DoesNotExist)?;
+                Ok(File::open_pty_master(pty, self.clone()))
+            }
         }
     }