8 use crate::{libs::spinlock::SpinLock, syscall::SystemError};
104     fn is_mountpoint_root(&self) -> Result<bool, SystemError> {  in is_mountpoint_root()  argument
126     fn open(&self, data: &mut FilePrivateData, mode: &FileMode) -> Result<(), SystemError> {  in open()  argument
130     fn close(&self, data: &mut FilePrivateData) -> Result<(), SystemError> {  in close()  argument
140     ) -> Result<Arc<dyn IndexNode>, SystemError> {  in create_with_data()  argument
146     fn truncate(&self, len: usize) -> Result<(), SystemError> {  in truncate()  argument
156     ) -> Result<usize, SystemError> {  in read_at()  argument
166     ) -> Result<usize, SystemError> {  in write_at()  argument
171     fn poll(&self) -> Result<super::PollStatus, SystemError> {  in poll()  argument
186     fn metadata(&self) -> Result<super::Metadata, SystemError> {  in metadata()  argument
191     fn set_metadata(&self, metadata: &super::Metadata) -> Result<(), SystemError> {  in set_metadata()  argument
196     fn resize(&self, len: usize) -> Result<(), SystemError> {  in resize()  argument
206     ) -> Result<Arc<dyn IndexNode>, SystemError> {  in create()  argument
215     fn link(&self, name: &str, other: &Arc<dyn IndexNode>) -> Result<(), SystemError> {  in link()  argument
221     fn unlink(&self, name: &str) -> Result<(), SystemError> {  in unlink()  argument
226             return Err(SystemError::EBUSY);  in unlink()
233     fn rmdir(&self, name: &str) -> Result<(), SystemError> {  in rmdir()  argument
238             return Err(SystemError::EBUSY);  in rmdir()
252     ) -> Result<(), SystemError> {  in move_()  argument
256     fn find(&self, name: &str) -> Result<Arc<dyn IndexNode>, SystemError> {  in find()  argument
298     fn get_entry_name(&self, ino: InodeId) -> Result<alloc::string::String, SystemError> {  in get_entry_name()  argument
306     ) -> Result<(alloc::string::String, super::Metadata), SystemError> {  in get_entry_name_and_metadata()  argument
311     fn ioctl(&self, cmd: u32, data: usize) -> Result<usize, SystemError> {  in ioctl()  argument
316     fn list(&self) -> Result<alloc::vec::Vec<alloc::string::String>, SystemError> {  in list()  argument
323     fn mount(&self, fs: Arc<dyn FileSystem>) -> Result<Arc<MountFS>, SystemError> {  in mount()  argument
326             return Err(SystemError::ENOTDIR);  in mount()