Struct kernel::power::PowerDevice

pub struct PowerDevice;

Power device

This device is used to control the power of the system, its mostly used with echo [cmd] > /devices/power such as:

• echo shutdown > /devices/power to shutdown the system.

Trait Implementations

impl Debug for PowerDevice

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

Formats the value using the given formatter.

impl Device for PowerDevice

fn name(&self) -> &str

fn set_size(&self, size: u64) -> Result<(), FileSystemError>

fn write(&self, offset: u64, buf: &[u8]) -> Result<u64, FileSystemError>

fn read(&self, _offset: u64, _buf: &mut [u8]) -> Result<u64, FileSystemError>

fn close(&self) -> Result<(), FileSystemError>

Informs the device that it is closed.

fn clone_device(&self) -> Result<(), FileSystemError>

Informs the device that it is cloned.

fn try_create(&self) -> Option<Result<Arc<dyn Device>, FileSystemError>>

Open the device. This tells the device manager that when opening a file with this device name, it should instead use the device returned by this function. if None, it will just use the device directly.