Struct PipeScheme 

pub struct PipeScheme { /* private fields */ }

A scheme that manages kernel pipes.

Each pipe gets two file_ids: even = read end, odd = write end.

Implementations

impl PipeScheme

pub fn new() -> Self

Creates a new instance.

pub fn create_pipe(&self) -> (u64, Arc<Pipe>)

Create a new pipe pair. Returns (read_file_id, write_file_id).

Trait Implementations

impl Scheme for PipeScheme

fn open( &self, _path: &str, _flags: OpenFlags, ) -> Result<OpenResult, SyscallError>

Performs the open operation.

fn read( &self, file_id: u64, _offset: u64, buf: &mut [u8], ) -> Result<usize, SyscallError>

Performs the read operation.

fn write( &self, file_id: u64, _offset: u64, buf: &[u8], ) -> Result<usize, SyscallError>

Performs the write operation.

fn close(&self, file_id: u64) -> Result<(), SyscallError>

Performs the close operation.

fn stat(&self, file_id: u64) -> Result<FileStat, SyscallError>

Performs the stat operation.

fn readdir(&self, _file_id: u64) -> Result<Vec<DirEntry>, SyscallError>

Performs the readdir operation.

fn size(&self, file_id: u64) -> Result<u64, SyscallError>

Performs the size operation.

fn truncate(&self, file_id: u64, new_size: u64) -> Result<(), SyscallError>

Truncate/resize a file (if supported).

fn sync(&self, file_id: u64) -> Result<(), SyscallError>

Sync file to storage (if applicable).

fn create_file(&self, path: &str, mode: u32) -> Result<OpenResult, SyscallError>

Create a new regular file.

fn create_directory( &self, path: &str, mode: u32, ) -> Result<OpenResult, SyscallError>

Create a new directory.

fn unlink(&self, path: &str) -> Result<(), SyscallError>

Remove a file or directory.

fn rename(&self, old_path: &str, new_path: &str) -> Result<(), SyscallError>

Rename/move an entry within this scheme.

fn chmod(&self, path: &str, mode: u32) -> Result<(), SyscallError>

Change permission bits on a path.

fn fchmod(&self, file_id: u64, mode: u32) -> Result<(), SyscallError>

Change permission bits on an open file handle.

fn link(&self, old_path: &str, new_path: &str) -> Result<(), SyscallError>

Create a hard link.

fn symlink(&self, target: &str, link_path: &str) -> Result<(), SyscallError>

Create a symbolic link.

fn readlink(&self, path: &str) -> Result<String, SyscallError>

Read the target of a symbolic link.