libusbhost: Add support for creating a usb_device struct from an existing fd
We will use this for sharing USB file descriptors across address spaces via Binder
Change-Id: Iadbd3e0a4178f79d1d778fdfd5175f6fe0e2aaf5
Signed-off-by: Mike Lockwood <lockwood@android.com>
diff --git a/include/usbhost/usbhost.h b/include/usbhost/usbhost.h
index 5332acd..57d9c37 100644
--- a/include/usbhost/usbhost.h
+++ b/include/usbhost/usbhost.h
@@ -81,6 +81,16 @@
/* Releases all resources associated with the USB device */
void usb_device_close(struct usb_device *device);
+/* Creates a usb_device object for already open USB device.
+ * This is intended to facilitate sharing USB devices across address spaces.
+ */
+struct usb_device *usb_device_new(const char *dev_name, int fd);
+
+/* Returns the file descriptor for the usb_device. Used in conjunction with
+ * usb_device_new() for sharing USB devices across address spaces.
+ */
+int usb_device_get_fd(struct usb_device *device);
+
/* Returns the name for the USB device, which is the same as
* the dev_name passed to usb_device_open()
*/