12         vfs::IndexNode,
104     sys_info: Option<Arc<dyn IndexNode>>,
158     fn set_sys_info(&self, sys_info: Option<Arc<dyn IndexNode>>) {  in set_sys_info()  argument
162     fn sys_info(&self) -> Option<Arc<dyn IndexNode>> {  in sys_info()  argument
181     sys_info: Option<Arc<dyn IndexNode>>,
215     fn set_sys_info(&self, sys_info: Option<Arc<dyn IndexNode>>) {  in set_sys_info()  argument
219     fn sys_info(&self) -> Option<Arc<dyn IndexNode>> {  in sys_info()  argument
225     fn open(&self, _file: Arc<dyn IndexNode>) -> Result<(), crate::syscall::SystemError> {  in open()
229     fn close(&self, _file: Arc<dyn IndexNode>) -> Result<(), crate::syscall::SystemError> {  in close()
241     pub fn new(port: UartPort, baud_rate: u32, sys_info: Option<Arc<dyn IndexNode>>) -> Self {  in new()
266     pub fn new(port: UartPort, baud_rate: u32, sys_info: Option<Arc<dyn IndexNode>>) -> Self {  in new()