Trait axfs_vfs::VfsNodeOps

pub trait VfsNodeOps: Send + Sync {
    // Provided methods
    fn open(&self) -> VfsResult { ... }
    fn release(&self) -> VfsResult { ... }
    fn get_attr(&self) -> VfsResult<VfsNodeAttr> { ... }
    fn read_at(&self, _offset: u64, _buf: &mut [u8]) -> VfsResult<usize> { ... }
    fn write_at(&self, _offset: u64, _buf: &[u8]) -> VfsResult<usize> { ... }
    fn fsync(&self) -> VfsResult { ... }
    fn truncate(&self, _size: u64) -> VfsResult { ... }
    fn parent(&self) -> Option<VfsNodeRef> { ... }
    fn lookup(self: Arc<Self>, _path: &str) -> VfsResult<VfsNodeRef> { ... }
    fn create(&self, _path: &str, _ty: VfsNodeType) -> VfsResult { ... }
    fn remove(&self, _path: &str) -> VfsResult { ... }
    fn read_dir(
        &self,
        _start_idx: usize,
        _dirents: &mut [VfsDirEntry]
    ) -> VfsResult<usize> { ... }
    fn rename(&self, _src_path: &str, _dst_path: &str) -> VfsResult { ... }
    fn as_any(&self) -> &dyn Any { ... }
}

Node (file/directory) operations.

Provided Methods

fn open(&self) -> VfsResult

Do something when the node is opened.

fn release(&self) -> VfsResult

Do something when the node is closed.

fn get_attr(&self) -> VfsResult<VfsNodeAttr>

Get the attributes of the node.

fn read_at(&self, _offset: u64, _buf: &mut [u8]) -> VfsResult<usize>

Read data from the file at the given offset.

fn write_at(&self, _offset: u64, _buf: &[u8]) -> VfsResult<usize>

Write data to the file at the given offset.

fn fsync(&self) -> VfsResult

Flush the file, synchronize the data to disk.

fn truncate(&self, _size: u64) -> VfsResult

Truncate the file to the given size.

fn parent(&self) -> Option<VfsNodeRef>

Get the parent directory of this directory.

Return None if the node is a file.

fn lookup(self: Arc<Self>, _path: &str) -> VfsResult<VfsNodeRef>

Lookup the node with given path in the directory.

Return the node if found.

fn create(&self, _path: &str, _ty: VfsNodeType) -> VfsResult

Create a new node with the given path in the directory

Return Ok(()) if it already exists.

fn remove(&self, _path: &str) -> VfsResult

Remove the node with the given path in the directory.

fn read_dir( &self, _start_idx: usize, _dirents: &mut [VfsDirEntry] ) -> VfsResult<usize>

Read directory entries into dirents, starting from start_idx.

fn rename(&self, _src_path: &str, _dst_path: &str) -> VfsResult

Renames or moves existing file or directory.

fn as_any(&self) -> &dyn Any

Convert &self to &dyn Any that can use Any::downcast_ref.

Implementors