173     fn truncate(&self, len: usize) -> Result<(), SystemError> {  in truncate()
182         if inode.data.len() > len {  in truncate()
183             inode.data.resize(len, 0);  in truncate()
203         len: usize,  in read_at()
207         if buf.len() < len {  in read_at()
218         let start = inode.data.len().min(offset);  in read_at()
219         let end = inode.data.len().min(offset + len);  in read_at()
222         if buf.len() < (end - start) {  in read_at()
228         buf[0..src.len()].copy_from_slice(src);  in read_at()
229         return Ok(src.len());  in read_at()
235         len: usize,  in write_at()
239         if buf.len() < len {  in write_at()
254         if offset + len > data.len() {  in write_at()
255             data.resize(offset + len, 0);  in write_at()
258         let target = &mut data[offset..offset + len];  in write_at()
259         target.copy_from_slice(&buf[0..len]);  in write_at()
260         return Ok(len);  in write_at()
274         metadata.size = inode.data.len() as i64;  in metadata()
291     fn resize(&self, len: usize) -> Result<(), SystemError> {  in resize()
294             inode.data.resize(len, 0);  in resize()
533                 match key.len() {  in get_entry_name()
536 …y_len}>1, current inode_id={inode_id:?}, to find={to_find:?}", key_len=key.len(), inode_id = inode…  in get_entry_name()