read the read/write state from the sony device properties
read the read/write state from the sony device properties

https://github.com/gphoto/libgphoto2/issues/555

gphoto/libgphoto2,gphoto/libgphoto2,gphoto/libgphoto2,gphoto/libgphoto2,gphoto/libgphoto2,gphoto/libgphoto2