220     fn root_inode(&self) -> Arc<dyn super::vfs::IndexNode> {  in root_inode()
231     fn as_any_ref(&self) -> &dyn core::any::Any {  in as_any_ref()
285         let proc: Arc<dyn IndexNode> = self.root_inode();  in register_pid()
287         let _pf: Arc<dyn IndexNode> = proc.create(&pid.to_string(), FileType::Dir, 0o777)?;  in register_pid()
290         let binding: Arc<dyn IndexNode> = _pf.create("status", FileType::File, 0o777)?;  in register_pid()
307         let proc: Arc<dyn IndexNode> = self.root_inode();  in unregister_pid()
309         let pid_dir: Arc<dyn IndexNode> = proc.find(&format!("{}", pid))?;  in unregister_pid()
434     fn fs(&self) -> Arc<dyn FileSystem> {  in fs()
438     fn as_any_ref(&self) -> &dyn core::any::Any {  in as_any_ref()
477     ) -> Result<Arc<dyn IndexNode>, SystemError> {  in create_with_data()
528     fn link(&self, name: &str, other: &Arc<dyn IndexNode>) -> Result<(), SystemError> {  in link()
582         _target: &Arc<dyn IndexNode>,  in move_()
588     fn find(&self, name: &str) -> Result<Arc<dyn IndexNode>, SystemError> {  in find()
696     let procfs_inode: Arc<dyn IndexNode> = ROOT_INODE().find("proc")?;  in procfs_unregister_pid()
701     let fs: Arc<dyn FileSystem> = procfs_inode.fs();  in procfs_unregister_pid()