func parseBlockDevices()

in options.go [280:314]

29 lines of code
6 McCabe index (conditional complexity)


func parseBlockDevices(entries []string) ([]models.Drive, error) {
	devices := []models.Drive{}

	for i, entry := range entries {
		path := ""
		readOnly := true

		if strings.HasSuffix(entry, ":rw") {
			readOnly = false
			path = strings.TrimSuffix(entry, ":rw")
		} else if strings.HasSuffix(entry, ":ro") {
			path = strings.TrimSuffix(entry, ":ro")
		} else {
			return nil, errInvalidDriveSpecificationNoSuffix
		}

		if path == "" {
			return nil, errInvalidDriveSpecificationNoPath
		}

		if _, err := os.Stat(path); err != nil {
			return nil, err
		}

		e := models.Drive{
			// i + 2 represents the drive ID. We will reserve 1 for root.
			DriveID:      firecracker.String(strconv.Itoa(i + 2)),
			PathOnHost:   firecracker.String(path),
			IsReadOnly:   firecracker.Bool(readOnly),
			IsRootDevice: firecracker.Bool(false),
		}
		devices = append(devices, e)
	}
	return devices, nil
}