pub unsafe extern "C" fn libxdc_init(
filter: *mut [u64; 2],
page_cache_fetch_fptr: Option<unsafe extern "C" fn(arg1: *mut c_void, arg2: u64, arg3: *mut bool) -> *mut c_void>,
page_cache_fetch_opaque: *mut c_void,
bitmap_ptr: *mut c_void,
bitmap_size: usize,
) -> *mut libxdc_t