Struct LinuxUsbWatcher 

pub struct LinuxUsbWatcher { /* private fields */ }

Linux-specific USB device watcher implementation.

This watcher uses the Linux sysfs filesystem (/sys/bus/usb/devices) to monitor USB device connections and disconnections. It polls the filesystem periodically to detect changes and sends events through the provided channel.

Device handles are provided for each detected device, including sysfs path. Future versions may detect device nodes (e.g., /dev/ttyUSB0).

Implementations

impl LinuxUsbWatcher

pub fn new(tx: Sender<UsbDeviceInfo>) -> Self

Creates a new Linux USB watcher.

Arguments

• tx - Channel sender for broadcasting USB device events

Returns

A new LinuxUsbWatcher instance

pub async fn start_monitoring(&self) -> Result<(), String>

Starts monitoring USB devices on Linux.

This method continuously polls the /sys/bus/usb/devices directory to detect USB device connection and disconnection events. It maintains a map of known devices and compares against current devices to identify changes.

Returns

Returns Ok(()) if monitoring stops gracefully, or Err(String) if an error occurs during monitoring.

Errors

Returns an error if:

• The USB devices directory is not accessible
• File system operations fail
• Device information parsing fails