feat: 初步增加 Windows 支持

src/otg/mod.rs

@@ -1,14 +1,37 @@
 //! USB OTG composite gadget (HID + MSD).
 
+#[cfg(unix)]
 pub mod configfs;
 pub mod endpoint;
+#[cfg(unix)]
 pub mod function;
+#[cfg(unix)]
 pub mod hid;
+#[cfg(unix)]
 pub mod manager;
+#[cfg(unix)]
 pub mod msd;
 pub mod report_desc;
+pub mod self_check;
+#[cfg(unix)]
 pub mod service;
 
+#[cfg(unix)]
 pub use manager::{wait_for_hid_devices, OtgGadgetManager};
+#[cfg(unix)]
 pub use msd::{MsdFunction, MsdLunConfig};
+#[cfg(unix)]
 pub use service::{HidDevicePaths, OtgService};
+
+/// List USB Device Controller names exposed by sysfs.
+pub fn list_udc_devices() -> Vec<String> {
+    let mut devices: Vec<String> = std::fs::read_dir("/sys/class/udc")
+        .ok()
+        .into_iter()
+        .flat_map(|entries| entries.filter_map(|entry| entry.ok()))
+        .filter_map(|entry| entry.file_name().to_str().map(str::to_owned))
+        .collect();
+
+    devices.sort();
+    devices
+}