extern void volume_id_set_usage(struct volume_id *id, enum volume_id_usage usage_id);
extern void volume_id_set_usage_part(struct volume_id_partition *part, enum volume_id_usage usage_id);
extern void volume_id_set_label_raw(struct volume_id *id, const __u8 *buf, unsigned int count);
extern void volume_id_set_usage(struct volume_id *id, enum volume_id_usage usage_id);
extern void volume_id_set_usage_part(struct volume_id_partition *part, enum volume_id_usage usage_id);
extern void volume_id_set_label_raw(struct volume_id *id, const __u8 *buf, unsigned int count);