use io;

// Reads from a stream into a buffer at specified offset
fn pread(s: io::handle, buf: []u8, off: io::off) (size | io::EOF | io::error) = {
	io::seek(s, off, io::whence::SET)?;
	return io::read(s, buf)?;
};

// Writes into a stream from a buffer at specified offset
fn pwrite(s: io::handle, buf: const []u8, off: io::off) (size | io::error) = {
	io::seek(s, off, io::whence::SET)?;
	return io::write(s, buf)?;
};