Function zxio_create_symlink 

pub unsafe extern "C" fn zxio_create_symlink(
    io: *mut zxio_t,
    name: *const c_char,
    name_len: usize,
    target: *const u8,
    target_len: usize,
    storage: *mut zxio_storage_t,
) -> zx_status_t