commented the bitmap + init_bitmap + init_file_hdr

src/filesys/filehdr.rs

@@ -20,6 +20,19 @@ pub struct FileHdr {
 
 impl FileHdr { 
 
+
+    pub fn init_file_hdr() -> FileHdr {
+        FileHdr { 
+            is_dir: 0, 
+            num_bytes: 0, 
+            num_sectors: 0, 
+            data_sectors: Vec::new(), 
+            num_header_sectors: 0, 
+            header_sectors: [0;MAX_HEADER_SECTORS as usize],
+        }
+    }
+
+
     pub fn allocate(&mut self, mut free_map: BitMap, file_size: i32) -> bool {
         self.num_bytes = file_size;
         if file_size > MAX_FILE_LENGTH {
@@ -87,6 +100,11 @@ impl FileHdr {
     //TODO: fetchFrom WriteBack
 
 
+
+
+
+
+
     pub fn byte_to_sector(&self,offset: i32) -> i32 {
         return self.data_sectors[ (offset / SECTOR_SIZE) as usize];
     }