-extern void volume_id_set_label_raw(struct volume_id *id, const __u8 *buf, unsigned int count);
-extern void volume_id_set_label_string(struct volume_id *id, const __u8 *buf, unsigned int count);
-extern void volume_id_set_label_unicode16(struct volume_id *id, const __u8 *buf, enum endian endianess, unsigned int count);
-extern void volume_id_set_uuid(struct volume_id *id, const __u8 *buf, enum uuid_format format);
-extern __u8 *volume_id_get_buffer(struct volume_id *id, __u64 off, unsigned int len);
+extern void volume_id_set_label_raw(struct volume_id *id, const uint8_t *buf, size_t count);
+extern void volume_id_set_label_string(struct volume_id *id, const uint8_t *buf, size_t count);
+extern void volume_id_set_label_unicode16(struct volume_id *id, const uint8_t *buf, enum endian endianess, size_t count);
+extern void volume_id_set_uuid(struct volume_id *id, const uint8_t *buf, enum uuid_format format);
+extern uint8_t *volume_id_get_buffer(struct volume_id *id, uint64_t off, size_t len);