[VFS] Skeleton for moving victoria falls to rust.

rust/lib/fs/ext2/src/ext2_driver.rs

@@ -0,0 +1,19 @@
+use denali_client::DiskReader;
+use mammoth::mem::MemoryRegion;
+
+use crate::types::Superblock;
+
+pub struct Ext2Driver {
+    reader: DiskReader,
+}
+
+impl Ext2Driver {
+    pub fn new(mut reader: DiskReader) -> Self {
+        let super_block_mem = MemoryRegion::from_cap(reader.read(2, 2).unwrap()).unwrap();
+        let super_block: &Superblock = super_block_mem.as_ref();
+        let inodes = super_block.inodes_count;
+        let magic = super_block.magic;
+        mammoth::debug!("Superblock ({:#x}): inodes: {:#x}", magic, inodes);
+        Self { reader }
+    }
+}