125     ) -> Result<(), SystemError> {  in register_device()  argument
198     ) -> Result<(), SystemError> {  in unregister_device()  argument
296     pub fn add_dir(&self, name: &str) -> Result<(), SystemError> {  in add_dir()  argument
319     pub fn add_dev(&self, name: &str, dev: Arc<dyn IndexNode>) -> Result<(), SystemError> {  in add_dev()  argument
330     pub fn remove(&self, name: &str) -> Result<(), SystemError> {  in remove()  argument
349     ) -> Result<Arc<dyn IndexNode>, SystemError> {  in do_create_with_data()  argument
402     ) -> Result<(), SystemError> {  in open()  argument
406     fn close(&self, _data: SpinLockGuard<FilePrivateData>) -> Result<(), SystemError> {  in close()  argument
416     ) -> Result<Arc<dyn IndexNode>, SystemError> {  in create_with_data()  argument
423     fn find(&self, name: &str) -> Result<Arc<dyn IndexNode>, SystemError> {  in find()  argument
452     fn get_entry_name(&self, ino: super::vfs::InodeId) -> Result<String, SystemError> {  in get_entry_name()  argument
494     ) -> Result<usize, SystemError> {  in ioctl()  argument
498     fn list(&self) -> Result<Vec<String>, SystemError> {  in list()  argument
520     fn metadata(&self) -> Result<Metadata, SystemError> {  in metadata()  argument
524     fn set_metadata(&self, metadata: &Metadata) -> Result<(), SystemError> {  in set_metadata()  argument
543     ) -> Result<usize, SystemError> {  in read_at()  argument
555     ) -> Result<usize, SystemError> {  in write_at()  argument
559     fn parent(&self) -> Result<Arc<dyn IndexNode>, SystemError> {  in parent()  argument
567     fn dname(&self) -> Result<DName, SystemError> {  in dname()  argument
600 pub fn devfs_register<T: DeviceINode>(name: &str, device: Arc<T>) -> Result<(), SystemError> {  in devfs_register()  argument
606 pub fn devfs_unregister<T: DeviceINode>(name: &str, device: Arc<T>) -> Result<(), SystemError> {  in devfs_unregister()  argument