pkg/qemu: split qemu-img functions to imgutil

[AkihiroSuda]

lima/pkg/qemu/qemu.go

Lines 130 to 154 in 1f787fb

	func CreateDataDisk(dir, format string, size int) error {
	dataDisk := filepath.Join(dir, filenames.DataDisk)
	if _, err := os.Stat(dataDisk); err == nil || !errors.Is(err, fs.ErrNotExist) {
	// datadisk already exists
	return err
	}
	args := []string{"create", "-f", format, dataDisk, strconv.Itoa(size)}
	cmd := exec.Command("qemu-img", args...)
	if out, err := cmd.CombinedOutput(); err != nil {
	return fmt.Errorf("failed to run %v: %q: %w", cmd.Args, string(out), err)
	}
	return nil
	}
	func ResizeDataDisk(dir, format string, size int) error {
	dataDisk := filepath.Join(dir, filenames.DataDisk)
	args := []string{"resize", "-f", format, dataDisk, strconv.Itoa(size)}
	cmd := exec.Command("qemu-img", args...)
	if out, err := cmd.CombinedOutput(); err != nil {
	return fmt.Errorf("failed to run %v: %q: %w", cmd.Args, string(out), err)
	}
	return nil
	}

These functions above should be moved from pkg/qemu to pkg/qemu/imgutil, so that cmd/limactl does not need to depend on pkg/qemu

lima/cmd/limactl/disk.go

Line 117 in 1f787fb

err = qemu.CreateDataDisk(diskDir, format, int(diskSize))