Struct kdevice::root::Root

pub struct Root {}

The root file system.

Trait Implementations

impl Default for Root

fn default() -> Root

Returns the “default value” for a type.

impl Device for Root

fn remove<'life0, 'life1, 'async_trait>(
    &'life0 self,
    c: &'life1 ChanId
) -> Result<Pin<Box<dyn Future<Output = Result<bool>> + Send + 'async_trait>>, AllocError> where
    'life0: 'async_trait,
    'life1: 'async_trait,
    Self: 'async_trait, 

Return false the link is already zero or it is an non-empty directory.

fn shutdown<'async_trait>(
    self
) -> Result<Pin<Box<dyn Future<Output = ()> + Send + 'async_trait>>, AllocError> where
    Self: Sized,
    Self: 'async_trait, 

The async destructor of the device.

fn attach<'life0, 'life1, 'async_trait>(
    &'life0 self,
    aname: &'life1 [u8]
) -> Result<Pin<Box<dyn Future<Output = Result<ChanId>> + Send + 'async_trait>>, AllocError> where
    Self: Sized,
    'life0: 'async_trait,
    'life1: 'async_trait,
    Self: 'async_trait, 

Return the root channel. aname is a user-specified hint.

fn open<'life0, 'life1, 'life2, 'async_trait>(
    &'life0 self,
    dir: &'life1 ChanId,
    name: &'life2 [u8],
    create_dir: Option<bool>
) -> Result<Pin<Box<dyn Future<Output = Result<Option<ChanId>>> + Send + 'async_trait>>, AllocError> where
    'life0: 'async_trait,
    'life1: 'async_trait,
    'life2: 'async_trait,
    Self: 'async_trait, 

Open a file in the directory or reopen a file.

fn close<'life0, 'async_trait>(
    &'life0 self,
    c: ChanId
) -> Result<Pin<Box<dyn Future<Output = ()> + Send + 'async_trait>>, AllocError> where
    'life0: 'async_trait,
    Self: 'async_trait, 

Close a file. The drop of channel is done by Chan::close

fn truncate<'life0, 'life1, 'async_trait>(
    &'life0 self,
    c: &'life1 ChanId,
    size: usize
) -> Result<Pin<Box<dyn Future<Output = Result<usize>> + Send + 'async_trait>>, AllocError> where
    'life0: 'async_trait,
    'life1: 'async_trait,
    Self: 'async_trait, 

Reduce the size of a file.

fn stat<'life0, 'life1, 'async_trait>(
    &'life0 self,
    c: &'life1 ChanId
) -> Result<Pin<Box<dyn Future<Output = Result<Dirent>> + Send + 'async_trait>>, AllocError> where
    'life0: 'async_trait,
    'life1: 'async_trait,
    Self: 'async_trait, 

Inquires about the file attribute identified by a channel.

fn wstat<'life0, 'life1, 'life2, 'async_trait>(
    &'life0 self,
    c: &'life1 ChanId,
    dirent: &'life2 Dirent
) -> Result<Pin<Box<dyn Future<Output = Result<()>> + Send + 'async_trait>>, AllocError> where
    'life0: 'async_trait,
    'life1: 'async_trait,
    'life2: 'async_trait,
    Self: 'async_trait, 

Change the file attribute identified by a channel. Should be atomic.

fn read<'life0, 'life1, 'life2, 'async_trait>(
    &'life0 self,
    c: &'life1 ChanId,
    buf: &'life2 mut [u8],
    off: usize
) -> Result<Pin<Box<dyn Future<Output = Result<usize>> + Send + 'async_trait>>, AllocError> where
    'life0: 'async_trait,
    'life1: 'async_trait,
    'life2: 'async_trait,
    Self: 'async_trait, 

Read data from a channel by offset and store to buffer.

fn write<'life0, 'life1, 'life2, 'async_trait>(
    &'life0 self,
    c: &'life1 ChanId,
    buf: &'life2 [u8],
    off: usize
) -> Result<Pin<Box<dyn Future<Output = Result<usize>> + Send + 'async_trait>>, AllocError> where
    'life0: 'async_trait,
    'life1: 'async_trait,
    'life2: 'async_trait,
    Self: 'async_trait, 

Write the data in buffer to a channel starting by specific offset. Directories are not allowed to be written.