extern int zft_extract_volume_headers(__u8 *buffer);
extern int zft_update_volume_table (unsigned int segment);
extern int zft_open_volume (zft_position *pos,
extern int zft_extract_volume_headers(__u8 *buffer);
extern int zft_update_volume_table (unsigned int segment);
extern int zft_open_volume (zft_position *pos,