pub fn path_readlink<M: Memory>(
_ctx: &mut WasiCtx,
_mem: &mut M,
_dir_fd: __wasi_fd_t,
_path: WasmPtr<u8>,
_path_len: __wasi_size_t,
_buf: WasmPtr<u8>,
_buf_len: __wasi_size_t,
_buf_used: WasmPtr<__wasi_size_t>,
) -> Result<(), Errno>