Typing in terminal is now supported in rust teton.

rust/lib/mammoth/src/port.rs

@@ -0,0 +1,42 @@
+use crate::syscall::{cap_duplicate, cap_release, port_create, port_recv};
+use crate::zion::{kZionPerm_Read, z_cap_t, ZError};
+
+pub struct PortServer {
+    port_cap: z_cap_t,
+}
+
+impl PortServer {
+    pub fn new() -> Result<Self, ZError> {
+        Ok(Self {
+            port_cap: port_create()?,
+        })
+    }
+
+    pub fn create_client_cap(&self) -> Result<z_cap_t, ZError> {
+        cap_duplicate(self.port_cap, !kZionPerm_Read)
+    }
+
+    pub fn recv_byte(&self) -> Result<u8, ZError> {
+        let mut caps: [z_cap_t; 0] = [];
+        let mut bytes: [u8; 1] = [0];
+
+        port_recv(self.port_cap, &mut bytes, &mut caps)?;
+
+        Ok(bytes[0])
+    }
+
+    pub fn recv_u16(&self) -> Result<u16, ZError> {
+        let mut caps: [z_cap_t; 0] = [];
+        let mut bytes: [u8; 2] = [0; 2];
+
+        port_recv(self.port_cap, &mut bytes, &mut caps)?;
+
+        Ok(u16::from_le_bytes(bytes))
+    }
+}
+
+impl Drop for PortServer {
+    fn drop(&mut self) {
+        cap_release(self.port_cap).expect("Failed to release port cap");
+    }
+}