Struct kcore::chan::Chan

pub struct Chan { /* fields omitted */ }

Channel represents a virtual file from kernel’s perspective.

Implementations

impl Chan

pub async fn attach(
    dev: Arc<dyn Device + Send + Sync>,
    aname: &[u8]
) -> Result<Arc<Self>>

Create a new mount space from the root of a device.

pub async fn path(self: &Arc<Chan>) -> Result<Vec<u8>>

Get the absolute path string of this chan.

pub async fn new(chan: &Arc<Chan>) -> Result<Arc<Self>>

Create a new mount space rooted at a chan.

pub async fn mount(&self, old: &Arc<Self>) -> Result<()>

Mount directory to this chan.

This will mount all union directories from old to this chan.

pub async fn bind(&self, old: &Arc<Self>) -> Result<()>

Bind file to this chan.

Drop any previously bound chan.

pub async fn clear_mount(&self)

Remove all mount point of this chan.

pub async fn open(
    self: &Arc<Self>,
    path: &[u8],
    create_dir: Option<bool>
) -> Result<Option<Arc<Self>>>

Open a file located at path starting from this chan.

Return NotFound if failed to find any directory components within the path. Otherwise it can find the parent directory.

pub async fn close(self: Arc<Self>)

Close a file. The async destructor.

pub fn dup(self: &Arc<Self>) -> Arc<Self>

Duplicate a handle of file.

pub fn is_dir(&self) -> bool

Check if this chan is directory. Chans in umnt are of same type of itself.

pub async fn remove(&self) -> Result<bool>

Remove wrapper.

pub async fn stat(&self) -> Result<Dirent>

Stat wrapper.

pub async fn wstat(&self, dirent: &Dirent) -> Result<()>

Wstat wrapper.

pub async fn read(&self, buf: &mut [u8], off: usize) -> Result<usize>

Read wrapper.

pub async fn write(&self, buf: &[u8], off: usize) -> Result<usize>

Write wrapper.

pub async fn truncate(&self, size: usize) -> Result<usize>

Truncate wrapper.

Trait Implementations

impl Debug for Chan

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.