size_t available_space_after (union block *);
off_t current_block_ordinal (void);
void close_archive (void);
void closeout_volume_number (void);
union block *find_next_block (void);
size_t available_space_after (union block *);
off_t current_block_ordinal (void);
void close_archive (void);
void closeout_volume_number (void);
union block *find_next_block (void);