Implement more system calls

syscall/src/scheme.rs

@@ -1,35 +1,7 @@
-use core::ops::{Deref, DerefMut};
-use core::{mem, slice};
+use core::slice;
 
 use super::*;
 
-#[derive(Copy, Clone, Debug, Default)]
-#[repr(packed)]
-pub struct Packet {
-    pub id: usize,
-    pub a: usize,
-    pub b: usize,
-    pub c: usize,
-    pub d: usize
-}
-
-impl Deref for Packet {
-    type Target = [u8];
-    fn deref(&self) -> &[u8] {
-        unsafe {
-            slice::from_raw_parts(self as *const Packet as *const u8, mem::size_of::<Packet>()) as &[u8]
-        }
-    }
-}
-
-impl DerefMut for Packet {
-    fn deref_mut(&mut self) -> &mut [u8] {
-        unsafe {
-            slice::from_raw_parts_mut(self as *mut Packet as *mut u8, mem::size_of::<Packet>()) as &mut [u8]
-        }
-    }
-}
-
 pub trait Scheme {
     fn handle(&self, packet: &mut Packet) {
         packet.a = Error::mux(match packet.a {
@@ -69,11 +41,6 @@ pub trait Scheme {
         Err(Error::new(ENOENT))
     }
 
-    #[allow(unused_variables)]
-    fn stat(&self, path: &[u8], stat: &mut Stat) -> Result<usize> {
-        Err(Error::new(ENOENT))
-    }
-
     #[allow(unused_variables)]
     fn unlink(&self, path: &[u8]) -> Result<usize> {
         Err(Error::new(ENOENT))