Struct DevicesController

pub struct DevicesController { /* private fields */ }

A controller that allows controlling the devices subsystem of a Cgroup.

In essence, using the devices controller, it is possible to allow or disallow sets of devices to be used by the control group’s tasks.

Implementations

impl DevicesController

pub fn new(root: PathBuf) -> Self

Constructs a new DevicesController with root serving as the root of the control group.

pub fn allow_device( &self, devtype: DeviceType, major: i64, minor: i64, perm: &[DevicePermissions], ) -> Result<()>

Allow a (possibly, set of) device(s) to be used by the tasks in the control group.

When -1 is passed as major or minor, the kernel interprets that value as “any”, meaning that it will match any device.

pub fn deny_device( &self, devtype: DeviceType, major: i64, minor: i64, perm: &[DevicePermissions], ) -> Result<()>

Deny the control group’s tasks access to the devices covered by dev.

When -1 is passed as major or minor, the kernel interprets that value as “any”, meaning that it will match any device.

pub fn allowed_devices(&self) -> Result<Vec<DeviceResource>>

Get the current list of allowed devices.

Trait Implementations

impl Clone for DevicesController

fn clone(&self) -> DevicesController

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for DevicesController

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

Formats the value using the given formatter.

impl<'a> From<&'a Subsystem> for &'a DevicesController

fn from(sub: &'a Subsystem) -> &'a DevicesController

Converts to this type from the input type.