Function open_by_handle_at
pub unsafe extern "C" fn open_by_handle_at(mount_fd: c_int, handle: *mut file_handle, flags: c_int) -> c_intopen_by_handle_atpub unsafe extern "C" fn open_by_handle_at(mount_fd: c_int, handle: *mut file_handle, flags: c_int) -> c_int