Struct mio_udev::Context

pub struct Context { /* fields omitted */ }

A libudev context.

Methods

impl Context

pub fn new() -> Result<Context, Error>

Creates a new context.

pub fn device_from_syspath(&self, syspath: &Path) -> Result<Device, Error>

Creates a device for a given syspath.

The syspath parameter should be a path to the device file within the sysfs file system, e.g., /sys/devices/virtual/tty/tty0.

pub fn device_from_devnum(
    &self,
    dev_type: DeviceType,
    dev_num: u64
) -> Result<Device, Error>

Creates a device for a given device type and number.

pub fn device_from_subsystem_sysname(
    &self,
    subsystem: &Path,
    syspath: &Path
) -> Result<Device, Error>

Creates a device from a given subsystem and sysname.

pub fn device_from_device_id(&self, device_id: &Path) -> Result<Device, Error>

Creates a device from a given device id.

The device id should be in one of these formats:

• b8:2 - block device major:minor
• c128:1 - char device major:minor
• n3 - network device ifindex
• +sound:card29 - kernel driver core subsystem:device name

pub fn device_from_environment(&self) -> Result<Device, Error>

Creates a device from the current environment (see environ(7)).

Each key-value pair is interpreted in the same way as if it was received in an uevent (see udev_monitor_receive_device(3)). The keys DEVPATH, SUBSYSTEM, ACTION, and SEQNUM are mandatory.

Trait Implementations

impl AsRaw<udev> for Context

fn as_raw(&self) -> *mut udev

Get a reference of the underlying struct.

fn into_raw(self) -> *mut udev

Convert the object into the underlying pointer.

impl Clone for Context

fn clone(&self) -> Context

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Drop for Context

fn drop(&mut self)

Executes the destructor for this type.

impl FromRaw<udev> for Context

unsafe fn from_raw(ptr: *mut udev) -> Context

Create an object from a given raw pointer.