off_t current_block_ordinal (void);
void close_archive (void);
void closeout_volume_number (void);
+void compute_duration (void);
union block *find_next_block (void);
void flush_read (void);
void flush_write (void);
void uid_to_uname (uid_t uid, char **uname);
int uname_to_uid (char const *uname, uid_t *puid);
-void init_names (void);
+void name_init (void);
void name_add_name (const char *name, int matching_flags);
void name_add_dir (const char *name);
void name_term (void);
void xheader_set_option (char *string);
void xheader_string_begin (void);
void xheader_string_add (char const *s);
-void xheader_string_end (char const *keyword);
+bool xheader_string_end (char const *keyword);
bool xheader_keyword_deleted_p (const char *kw);
char *xheader_format_name (struct tar_stat_info *st, const char *fmt,
size_t n);