1 /* Common declarations for the tar program.
3 Copyright (C) 1988, 1992, 1993, 1994, 1996, 1997, 1999, 2000, 2001,
4 2003, 2004 Free Software Foundation, Inc.
6 This program is free software; you can redistribute it and/or modify it
7 under the terms of the GNU General Public License as published by the
8 Free Software Foundation; either version 2, or (at your option) any later
11 This program is distributed in the hope that it will be useful, but
12 WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
14 Public License for more details.
16 You should have received a copy of the GNU General Public License along
17 with this program; if not, write to the Free Software Foundation, Inc.,
18 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
20 /* Declare the GNU tar archive format. */
23 /* The checksum field is filled with this while the checksum is computed. */
24 #define CHKBLANKS " " /* 8 blanks, no null */
26 /* Old GNU stores zero-terminated file name */
27 #define OLDGNU_NAME_FIELD_SIZE 99
29 /* Some constants from POSIX are given names. */
30 #define NAME_FIELD_SIZE 100
31 #define PREFIX_FIELD_SIZE 155
32 #define UNAME_FIELD_SIZE 32
33 #define GNAME_FIELD_SIZE 32
36 #define MAXOCTAL11 017777777777L
37 #define MAXOCTAL7 07777777
41 /* Some various global definitions. */
43 /* Name of file to use for interacting with user. */
45 /* GLOBAL is defined to empty in tar.c only, and left alone in other *.c
46 modules. Here, we merely set it to "extern" if it is not already set.
47 GNU tar does depend on the system loader to preset all GLOBAL variables to
48 neutral (or zero) values, explicit initialization is usually not done. */
50 # define GLOBAL extern
53 /* Exit status for GNU tar. Let's try to keep this list as simple as
54 possible. -d option strongly invites a status different for unequal
55 comparison and other errors. */
56 GLOBAL
int exit_status
;
58 #define TAREXIT_SUCCESS 0
59 #define TAREXIT_DIFFERS 1
60 #define TAREXIT_FAILURE 2
62 /* Both WARN and ERROR write a message on stderr and continue processing,
63 however ERROR manages so tar will exit unsuccessfully. FATAL_ERROR
64 writes a message on stderr and aborts immediately, with another message
65 line telling so. USAGE_ERROR works like FATAL_ERROR except that the
66 other message line suggests trying --help. All four macros accept a
67 single argument of the form ((0, errno, _("FORMAT"), Args...)). errno
68 is zero when the error is not being detected by the system. */
73 (error Args, exit_status = TAREXIT_FAILURE)
74 #define FATAL_ERROR(Args) \
75 (error Args, fatal_exit ())
76 #define USAGE_ERROR(Args) \
77 (error Args, usage (TAREXIT_FAILURE))
80 #include <backupfile.h>
82 #include <full-write.h>
83 #include <modechange.h>
85 #include <safe-read.h>
87 #define obstack_chunk_alloc xmalloc
88 #define obstack_chunk_free free
91 /* Log base 2 of common values. */
96 /* Information gleaned from the command line. */
98 /* Name of this program. */
99 GLOBAL
const char *program_name
;
101 /* Main command option. */
105 UNKNOWN_SUBCOMMAND
, /* none of the following */
106 APPEND_SUBCOMMAND
, /* -r */
107 CAT_SUBCOMMAND
, /* -A */
108 CREATE_SUBCOMMAND
, /* -c */
109 DELETE_SUBCOMMAND
, /* -D */
110 DIFF_SUBCOMMAND
, /* -d */
111 EXTRACT_SUBCOMMAND
, /* -x */
112 LIST_SUBCOMMAND
, /* -t */
113 UPDATE_SUBCOMMAND
/* -u */
116 GLOBAL
enum subcommand subcommand_option
;
118 /* Selected format for output archive. */
119 GLOBAL
enum archive_format archive_format
;
121 /* Either NL or NUL, as decided by the --null option. */
122 GLOBAL
char filename_terminator
;
124 /* Size of each record, once in blocks, once in bytes. Those two variables
125 are always related, the second being BLOCKSIZE times the first. They do
126 not have _option in their name, even if their values is derived from
127 option decoding, as these are especially important in tar. */
128 GLOBAL
int blocking_factor
;
129 GLOBAL
size_t record_size
;
131 GLOBAL
bool absolute_names_option
;
133 /* Display file times in UTC */
134 GLOBAL
bool utc_option
;
136 /* This variable tells how to interpret newer_mtime_option, below. If zero,
137 files get archived if their mtime is not less than newer_mtime_option.
138 If nonzero, files get archived if *either* their ctime or mtime is not less
139 than newer_mtime_option. */
140 GLOBAL
int after_date_option
;
142 GLOBAL
bool atime_preserve_option
;
144 GLOBAL
bool backup_option
;
146 /* Type of backups being made. */
147 GLOBAL
enum backup_type backup_type
;
149 GLOBAL
bool block_number_option
;
151 GLOBAL
bool checkpoint_option
;
153 /* Specified name of compression program, or "gzip" as implied by -z. */
154 GLOBAL
const char *use_compress_program_option
;
156 GLOBAL
bool dereference_option
;
158 /* Print a message if not all links are dumped */
159 GLOBAL
int check_links_option
;
161 /* Patterns that match file names to be excluded. */
162 GLOBAL
struct exclude
*excluded
;
164 /* Exclude directories containing a cache directory tag. */
165 GLOBAL
bool exclude_caches_option
;
167 /* Specified value to be put into tar file in place of stat () results, or
168 just -1 if such an override should not take place. */
169 GLOBAL gid_t group_option
;
171 GLOBAL
bool ignore_failed_read_option
;
173 GLOBAL
bool ignore_zeros_option
;
175 GLOBAL
bool incremental_option
;
177 /* Specified name of script to run at end of each tape change. */
178 GLOBAL
const char *info_script_option
;
180 GLOBAL
bool interactive_option
;
182 /* If nonzero, extract only Nth occurrence of each named file */
183 GLOBAL
uintmax_t occurrence_option
;
187 DEFAULT_OLD_FILES
, /* default */
188 NO_OVERWRITE_DIR_OLD_FILES
, /* --no-overwrite-dir */
189 OVERWRITE_OLD_FILES
, /* --overwrite */
190 UNLINK_FIRST_OLD_FILES
, /* --unlink-first */
191 KEEP_OLD_FILES
, /* --keep-old-files */
192 KEEP_NEWER_FILES
/* --keep-newer-files */
194 GLOBAL
enum old_files old_files_option
;
196 /* Specified file name for incremental list. */
197 GLOBAL
const char *listed_incremental_option
;
199 /* Specified mode change string. */
200 GLOBAL
struct mode_change
*mode_option
;
202 GLOBAL
bool multi_volume_option
;
204 /* The same variable holds the time, whether mtime or ctime. Just fake a
205 non-existing option, for making the code clearer, elsewhere. */
206 #define newer_ctime_option newer_mtime_option
208 /* Specified threshold date and time. Files having an older time stamp
209 do not get archived (also see after_date_option above). */
210 GLOBAL
struct timespec newer_mtime_option
;
212 /* Return true if newer_mtime_option is initialized. */
213 #define NEWER_OPTION_INITIALIZED(opt) (0 <= (opt).tv_nsec)
215 /* Return true if the struct stat ST's M time is less than
216 newer_mtime_option. */
217 #define OLDER_STAT_TIME(st, m) \
218 ((st).st_##m##time < newer_mtime_option.tv_sec \
219 || ((st).st_##m##time == newer_mtime_option.tv_sec \
220 && TIMESPEC_NS ((st).st_##m##tim) < newer_mtime_option.tv_nsec))
222 /* Zero if there is no recursion, otherwise FNM_LEADING_DIR. */
223 GLOBAL
int recursion_option
;
225 GLOBAL
bool numeric_owner_option
;
227 GLOBAL
bool one_file_system_option
;
229 /* Specified value to be put into tar file in place of stat () results, or
230 just -1 if such an override should not take place. */
231 GLOBAL uid_t owner_option
;
233 GLOBAL
bool recursive_unlink_option
;
235 GLOBAL
bool read_full_records_option
;
237 GLOBAL
bool remove_files_option
;
239 /* Specified rmt command. */
240 GLOBAL
const char *rmt_command_option
;
242 /* Specified remote shell command. */
243 GLOBAL
const char *rsh_command_option
;
245 GLOBAL
bool same_order_option
;
247 /* If positive, preserve ownership when extracting. */
248 GLOBAL
int same_owner_option
;
250 /* If positive, preserve permissions when extracting. */
251 GLOBAL
int same_permissions_option
;
253 /* When set, strip the given number of file name components from the file name
255 GLOBAL
size_t strip_name_components
;
257 GLOBAL
bool show_omitted_dirs_option
;
259 GLOBAL
bool sparse_option
;
261 GLOBAL
bool starting_file_option
;
263 /* Specified maximum byte length of each tape volume (multiple of 1024). */
264 GLOBAL tarlong tape_length_option
;
266 GLOBAL
bool to_stdout_option
;
268 GLOBAL
bool totals_option
;
270 GLOBAL
bool touch_option
;
272 GLOBAL
char *to_command_option
;
273 GLOBAL
bool ignore_command_error_option
;
275 /* Count how many times the option has been set, multiple setting yields
276 more verbose behavior. Value 0 means no verbosity, 1 means file name
277 only, 2 means file name and all attributes. More than 2 is just like 2. */
278 GLOBAL
int verbose_option
;
280 GLOBAL
bool verify_option
;
282 /* Specified name of file containing the volume number. */
283 GLOBAL
const char *volno_file_option
;
285 /* Specified value or pattern. */
286 GLOBAL
const char *volume_label_option
;
288 /* Other global variables. */
290 /* File descriptor for archive file. */
293 /* Nonzero when outputting to /dev/null. */
294 GLOBAL
bool dev_null_output
;
296 /* Timestamp for when we started execution. */
297 #if HAVE_CLOCK_GETTIME
298 GLOBAL
struct timespec start_timespec
;
299 # define start_time (start_timespec.tv_sec)
301 GLOBAL
time_t start_time
;
304 GLOBAL
struct tar_stat_info current_stat_info
;
306 /* List of tape drive names, number of such tape drives, allocated number,
307 and current cursor in list. */
308 GLOBAL
const char **archive_name_array
;
309 GLOBAL
int archive_names
;
310 GLOBAL
int allocated_archive_names
;
311 GLOBAL
const char **archive_name_cursor
;
313 /* Output index file name. */
314 GLOBAL
char const *index_file_name
;
316 /* Structure for keeping track of filenames and lists thereof. */
320 size_t length
; /* cached strlen(name) */
321 uintmax_t found_count
; /* number of times a matching file has
324 char firstch
; /* first char is literally matched */
325 char regexp
; /* this name is a regexp, not literal */
326 int change_dir
; /* set with the -C option */
327 char const *dir_contents
; /* for incremental_option */
328 char fake
; /* dummy entry */
332 /* Obnoxious test to see if dimwit is trying to dump the archive. */
336 GLOBAL
bool seekable_archive
;
338 GLOBAL dev_t root_device
;
340 /* Unquote filenames */
341 GLOBAL
bool unquote_option
;
343 /* Declarations for each module. */
345 /* FIXME: compare.c should not directly handle the following variable,
346 instead, this should be done in buffer.c only. */
354 extern enum access_mode access_mode
;
356 /* Module buffer.c. */
359 extern char *save_name
;
360 extern off_t save_sizeleft
;
361 extern off_t save_totsize
;
362 extern bool write_archive_to_stdout
;
364 size_t available_space_after (union block
*);
365 off_t
current_block_ordinal (void);
366 void close_archive (void);
367 void closeout_volume_number (void);
368 union block
*find_next_block (void);
369 void flush_read (void);
370 void flush_write (void);
371 void flush_archive (void);
372 void init_volume_number (void);
373 void open_archive (enum access_mode
);
374 void print_total_written (void);
375 void reset_eof (void);
376 void set_next_block_after (union block
*);
377 void clear_read_error_count (void);
378 void xclose (int fd
);
379 void archive_write_error (ssize_t
) __attribute__ ((noreturn
));
380 void archive_read_error (void);
381 off_t
seek_archive (off_t size
);
382 void set_start_time (void);
384 /* Module create.c. */
391 dump_status_not_implemented
394 bool file_dumpable_p (struct tar_stat_info
*);
395 void create_archive (void);
396 void pad_archive (off_t size_left
);
397 void dump_file (char *, int, dev_t
);
398 union block
*start_header (struct tar_stat_info
*st
);
399 void finish_header (struct tar_stat_info
*, union block
*, off_t
);
400 void simple_finish_header (union block
*header
);
401 union block
*start_private_header (const char *name
, size_t size
);
402 void write_eot (void);
403 void check_links (void);
405 #define GID_TO_CHARS(val, where) gid_to_chars (val, where, sizeof (where))
406 #define MAJOR_TO_CHARS(val, where) major_to_chars (val, where, sizeof (where))
407 #define MINOR_TO_CHARS(val, where) minor_to_chars (val, where, sizeof (where))
408 #define MODE_TO_CHARS(val, where) mode_to_chars (val, where, sizeof (where))
409 #define OFF_TO_CHARS(val, where) off_to_chars (val, where, sizeof (where))
410 #define SIZE_TO_CHARS(val, where) size_to_chars (val, where, sizeof (where))
411 #define TIME_TO_CHARS(val, where) time_to_chars (val, where, sizeof (where))
412 #define UID_TO_CHARS(val, where) uid_to_chars (val, where, sizeof (where))
413 #define UINTMAX_TO_CHARS(val, where) uintmax_to_chars (val, where, sizeof (where))
414 #define UNAME_TO_CHARS(name,buf) string_to_chars (name, buf, sizeof(buf))
415 #define GNAME_TO_CHARS(name,buf) string_to_chars (name, buf, sizeof(buf))
417 void gid_to_chars (gid_t
, char *, size_t);
418 void major_to_chars (major_t
, char *, size_t);
419 void minor_to_chars (minor_t
, char *, size_t);
420 void mode_to_chars (mode_t
, char *, size_t);
421 void off_to_chars (off_t
, char *, size_t);
422 void size_to_chars (size_t, char *, size_t);
423 void time_to_chars (time_t, char *, size_t);
424 void uid_to_chars (uid_t
, char *, size_t);
425 void uintmax_to_chars (uintmax_t, char *, size_t);
426 void string_to_chars (char *, char *, size_t);
428 /* Module diffarch.c. */
430 extern bool now_verifying
;
432 void diff_archive (void);
433 void diff_init (void);
434 void verify_volume (void);
436 /* Module extract.c. */
438 extern bool we_are_root
;
439 void extr_init (void);
440 void extract_archive (void);
441 void extract_finish (void);
442 void fatal_exit (void) __attribute__ ((noreturn
));
444 /* Module delete.c. */
446 void delete_archive_members (void);
448 /* Module incremen.c. */
450 char *get_directory_contents (char *, dev_t
);
451 void read_directory_file (void);
452 void write_directory_file (void);
453 void purge_directory (char const *);
459 HEADER_STILL_UNREAD
, /* for when read_header has not been called */
460 HEADER_SUCCESS
, /* header successfully read and checksummed */
461 HEADER_SUCCESS_EXTENDED
, /* likewise, but we got an extended header */
462 HEADER_ZERO_BLOCK
, /* zero block where header expected */
463 HEADER_END_OF_FILE
, /* true end of file while header expected */
464 HEADER_FAILURE
/* ill-formed header, or bad checksum */
474 GLOBAL
struct xheader extended_header
;
475 extern union block
*current_header
;
476 extern enum archive_format current_format
;
477 extern size_t recent_long_name_blocks
;
478 extern size_t recent_long_link_blocks
;
480 void decode_header (union block
*, struct tar_stat_info
*,
481 enum archive_format
*, int);
482 #define STRINGIFY_BIGINT(i, b) \
483 stringify_uintmax_t_backwards ((uintmax_t) (i), (b) + UINTMAX_STRSIZE_BOUND)
484 char *stringify_uintmax_t_backwards (uintmax_t, char *);
485 char const *tartime (time_t);
487 #define GID_FROM_HEADER(where) gid_from_header (where, sizeof (where))
488 #define MAJOR_FROM_HEADER(where) major_from_header (where, sizeof (where))
489 #define MINOR_FROM_HEADER(where) minor_from_header (where, sizeof (where))
490 #define MODE_FROM_HEADER(where) mode_from_header (where, sizeof (where))
491 #define OFF_FROM_HEADER(where) off_from_header (where, sizeof (where))
492 #define SIZE_FROM_HEADER(where) size_from_header (where, sizeof (where))
493 #define TIME_FROM_HEADER(where) time_from_header (where, sizeof (where))
494 #define UID_FROM_HEADER(where) uid_from_header (where, sizeof (where))
495 #define UINTMAX_FROM_HEADER(where) uintmax_from_header (where, sizeof (where))
497 gid_t
gid_from_header (const char *, size_t);
498 major_t
major_from_header (const char *, size_t);
499 minor_t
minor_from_header (const char *, size_t);
500 mode_t
mode_from_header (const char *, size_t);
501 off_t
off_from_header (const char *, size_t);
502 size_t size_from_header (const char *, size_t);
503 time_t time_from_header (const char *, size_t);
504 uid_t
uid_from_header (const char *, size_t);
505 uintmax_t uintmax_from_header (const char *, size_t);
507 void list_archive (void);
508 void print_for_mkdir (char *, int, mode_t
);
509 void print_header (struct tar_stat_info
*, off_t
);
510 void read_and (void (*) (void));
511 enum read_header
read_header (bool);
512 enum read_header
tar_checksum (union block
*header
, bool silent
);
513 void skip_file (off_t
);
514 void skip_member (void);
516 /* Module mangle.c. */
518 void extract_mangle (void);
522 void assign_string (char **, const char *);
523 char *quote_copy_string (const char *);
524 int unquote_string (char *);
526 size_t dot_dot_prefix_len (char const *);
530 ORDINARY_REMOVE_OPTION
,
531 RECURSIVE_REMOVE_OPTION
,
533 /* FIXME: The following value is never used. It seems to be intended
534 as a placeholder for a hypothetical option that should instruct tar
535 to recursively remove subdirectories in purge_directory(),
536 as opposed to the functionality of --recursive-unlink
537 (RECURSIVE_REMOVE_OPTION value), which removes them in
538 prepare_to_extract() phase. However, with the addition of more
539 meta-info to the incremental dumps, this should become unnecessary */
540 WANT_DIRECTORY_REMOVE_OPTION
542 int remove_any_file (const char *, enum remove_option
);
543 bool maybe_backup_file (const char *, int);
544 void undo_last_backup (void);
546 int deref_stat (bool, char const *, struct stat
*);
548 int chdir_arg (char const *);
551 void decode_mode (mode_t
, char *);
553 void chdir_fatal (char const *) __attribute__ ((noreturn
));
554 void chmod_error_details (char const *, mode_t
);
555 void chown_error_details (char const *, uid_t
, gid_t
);
556 void close_error (char const *);
557 void close_warn (char const *);
558 void close_diag (char const *name
);
559 void exec_fatal (char const *) __attribute__ ((noreturn
));
560 void link_error (char const *, char const *);
561 void mkdir_error (char const *);
562 void mkfifo_error (char const *);
563 void mknod_error (char const *);
564 void open_error (char const *);
565 void open_fatal (char const *) __attribute__ ((noreturn
));
566 void open_warn (char const *);
567 void open_diag (char const *name
);
568 void read_error (char const *);
569 void read_error_details (char const *, off_t
, size_t);
570 void read_fatal (char const *) __attribute__ ((noreturn
));
571 void read_fatal_details (char const *, off_t
, size_t) __attribute__ ((noreturn
));
572 void read_warn_details (char const *, off_t
, size_t);
573 void read_diag_details (char const *name
, off_t offset
, size_t size
);
574 void readlink_error (char const *);
575 void readlink_warn (char const *);
576 void readlink_diag (char const *name
);
577 void savedir_error (char const *);
578 void savedir_warn (char const *);
579 void savedir_diag (char const *name
);
580 void seek_error (char const *);
581 void seek_error_details (char const *, off_t
);
582 void seek_warn (char const *);
583 void seek_warn_details (char const *, off_t
);
584 void seek_diag_details (char const *, off_t
);
585 void stat_fatal (char const *);
586 void stat_error (char const *);
587 void stat_warn (char const *);
588 void stat_diag (char const *name
);
589 void symlink_error (char const *, char const *);
590 void truncate_error (char const *);
591 void truncate_warn (char const *);
592 void unlink_error (char const *);
593 void utime_error (char const *);
594 void waitpid_error (char const *);
595 void write_error (char const *);
596 void write_error_details (char const *, size_t, size_t);
597 void write_fatal (char const *) __attribute__ ((noreturn
));
598 void write_fatal_details (char const *, ssize_t
, size_t)
599 __attribute__ ((noreturn
));
604 void *page_aligned_alloc (void **, size_t);
606 /* Module names.c. */
608 extern struct name
*gnu_list_name
;
610 void gid_to_gname (gid_t
, char **gname
);
611 int gname_to_gid (char const *, gid_t
*);
612 void uid_to_uname (uid_t
, char **uname
);
613 int uname_to_uid (char const *, uid_t
*);
615 void init_names (void);
616 void name_add (const char *);
617 void name_init (void);
618 void name_term (void);
619 char *name_next (int);
620 void name_gather (void);
621 struct name
*addname (char const *, int);
622 int name_match (const char *);
623 void names_notfound (void);
624 void collect_and_sort_names (void);
625 struct name
*name_scan (const char *);
626 char *name_from_list (void);
627 void blank_name_list (void);
628 char *new_name (const char *, const char *);
629 char *safer_name_suffix (char const *, bool);
630 size_t stripped_prefix_len (char const *file_name
, size_t num
);
631 bool all_names_found (struct tar_stat_info
*);
633 bool excluded_name (char const *);
635 void add_avoided_name (char const *);
636 bool is_avoided_name (char const *);
637 bool is_individual_file (char const *);
639 bool contains_dot_dot (char const *);
641 bool removed_prefixes_p (void);
643 #define ISFOUND(c) ((occurrence_option == 0) ? (c)->found_count : \
644 (c)->found_count == occurrence_option)
645 #define WASFOUND(c) ((occurrence_option == 0) ? (c)->found_count : \
646 (c)->found_count >= occurrence_option)
652 int confirm (const char *, const char *);
653 void request_stdin (const char *);
655 void tar_stat_init (struct tar_stat_info
*st
);
656 void tar_stat_destroy (struct tar_stat_info
*st
);
657 void usage (int) __attribute__ ((noreturn
));
659 /* Module update.c. */
661 extern char *output_start
;
663 void update_archive (void);
665 /* Module xheader.c. */
667 void xheader_decode (struct tar_stat_info
*);
668 void xheader_decode_global (void);
669 void xheader_store (char const *, struct tar_stat_info
const *, void *);
670 void xheader_read (union block
*, size_t);
671 void xheader_write (char type
, char *name
, struct xheader
*xhdr
);
672 void xheader_write_global (void);
673 void xheader_finish (struct xheader
*);
674 void xheader_destroy (struct xheader
*);
675 char *xheader_xhdr_name (struct tar_stat_info
*st
);
676 char *xheader_ghdr_name (void);
677 void xheader_write (char, char *, struct xheader
*);
678 void xheader_write_global (void);
679 void xheader_set_option (char *string
);
681 /* Module system.c */
683 void sys_stat_nanoseconds (struct tar_stat_info
*);
684 void sys_detect_dev_null_output (void);
685 void sys_save_archive_dev_ino (void);
686 void sys_drain_input_pipe (void);
687 void sys_wait_for_child (pid_t
);
688 void sys_spawn_shell (void);
689 bool sys_compare_uid (struct stat
*a
, struct stat
*b
);
690 bool sys_compare_gid (struct stat
*a
, struct stat
*b
);
691 bool sys_file_is_archive (struct tar_stat_info
*p
);
692 bool sys_compare_links (struct stat
*link_data
, struct stat
*stat_data
);
693 int sys_truncate (int fd
);
694 pid_t
sys_child_open_for_compress (void);
695 pid_t
sys_child_open_for_uncompress (void);
696 size_t sys_write_archive_buffer (void);
697 bool sys_get_archive_stat (void);
698 int sys_exec_command (char *file_name
, int typechar
, struct tar_stat_info
*st
);
699 void sys_wait_command (void);
701 /* Module compare.c */
702 void report_difference (struct tar_stat_info
*st
, const char *message
, ...);
704 /* Module sparse.c */
705 bool sparse_file_p (struct tar_stat_info
*);
706 bool sparse_member_p (struct tar_stat_info
*);
707 bool sparse_fixup_header (struct tar_stat_info
*);
708 enum dump_status
sparse_dump_file (int, struct tar_stat_info
*);
709 enum dump_status
sparse_extract_file (int, struct tar_stat_info
*, off_t
*);
710 enum dump_status
sparse_skip_file (struct tar_stat_info
*);
711 bool sparse_diff_file (int, struct tar_stat_info
*);
714 bool string_ascii_p (const char *str
);
715 bool utf8_convert (bool to_utf
, char const *input
, char **output
);