Sync computers

src/virtual_fs/null.rs

@@ -0,0 +1,51 @@
+use alloc::boxed::Box;
+use io::{IoBase, Read, Seek, Write};
+
+use crate::virtual_fs::{VirtualFileSystem, VirtualNode};
+
+#[derive(Debug)]
+pub struct Null;
+
+#[derive(Debug)]
+pub struct NullNode;
+
+impl VirtualFileSystem for Null {
+    fn open(
+        &mut self,
+        path: &bffs::path::Path,
+    ) -> Result<alloc::boxed::Box<dyn crate::virtual_fs::VirtualNode + '_>, ()> {
+        if !path.is_empty() {
+            Err(())
+        } else {
+            Ok(Box::new(NullNode))
+        }
+    }
+}
+
+impl IoBase for NullNode {
+    type Error = ();
+}
+
+impl Read for NullNode {
+    fn read(&mut self, _buf: &mut [u8]) -> Result<usize, Self::Error> {
+        Ok(0)
+    }
+}
+
+impl Seek for NullNode {
+    fn seek(&mut self, _pos: io::SeekFrom) -> Result<u64, Self::Error> {
+        todo!()
+    }
+}
+
+impl Write for NullNode {
+    fn write(&mut self, _buf: &[u8]) -> Result<usize, Self::Error> {
+        todo!()
+    }
+
+    fn flush(&mut self) -> Result<(), Self::Error> {
+        todo!()
+    }
+}
+
+impl VirtualNode for NullNode {}