use fmt;
use fs;
use io;
use os;

export fn mkvol(vol: str) io::file = {
	const vol = match (os::create(vol, fs::mode::USER_RWX | fs::mode::GROUP_RX | fs::mode::OTHER_RX, fs::flags::RDWR)) {
	case let v: io::file =>
		yield v;
	case =>
		fmt::fatalf("{}: cannot open file {}", os::args[0], os::args[1]);
	};

	return vol;
};

export fn openvol(vol: str) io::file = {
	const vol = match (os::open(vol, fs::flags::RDWR)) {
	case let v: io::file =>
		yield v;
	case =>
		fmt::fatalf("{}: cannot open file {}", os::args[0], os::args[1]);
	};

	return vol;
};