2 * Copyright (c) 2003-2010 Tim Kientzle
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
17 * IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 * $FreeBSD: src/lib/libarchive/archive.h.in,v 1.50 2008/05/26 17:00:22 kientzle Exp $
28 #ifndef ARCHIVE_H_INCLUDED
29 #define ARCHIVE_H_INCLUDED
32 #include <stddef.h> /* for wchar_t */
33 #include <stdio.h> /* For FILE * */
36 * Note: archive.h is for use outside of libarchive; the configuration
37 * headers (config.h, archive_platform.h, etc.) are purely internal.
38 * Do NOT use HAVE_XXX configuration macros to control the behavior of
39 * this header! If you must conditionalize, use predefined compiler and/or
42 #if defined(__BORLANDC__) && __BORLANDC__ >= 0x560
44 #elif !defined(__WATCOMC__) && !defined(_MSC_VER) && !defined(__INTERIX) && !defined(__BORLANDC__) && !defined(_SCO_DS)
45 # include <inttypes.h>
48 /* Get appropriate definitions of standard POSIX-style types. */
49 /* These should match the types used in 'struct stat' */
50 #if defined(_WIN32) && !defined(__CYGWIN__)
51 # define __LA_INT64_T __int64
52 # if defined(_SSIZE_T_DEFINED) || defined(_SSIZE_T_)
53 # define __LA_SSIZE_T ssize_t
54 # elif defined(_WIN64)
55 # define __LA_SSIZE_T __int64
57 # define __LA_SSIZE_T long
59 # if defined(__BORLANDC__)
60 # define __LA_UID_T uid_t
61 # define __LA_GID_T gid_t
63 # define __LA_UID_T short
64 # define __LA_GID_T short
67 # include <unistd.h> /* ssize_t, uid_t, and gid_t */
69 # define __LA_INT64_T long long
71 # define __LA_INT64_T int64_t
73 # define __LA_SSIZE_T ssize_t
74 # define __LA_UID_T uid_t
75 # define __LA_GID_T gid_t
79 * On Windows, define LIBARCHIVE_STATIC if you're building or using a
80 * .lib. The default here assumes you're building a DLL. Only
81 * libarchive source should ever define __LIBARCHIVE_BUILD.
83 #if ((defined __WIN32__) || (defined _WIN32) || defined(__CYGWIN__)) && (!defined LIBARCHIVE_STATIC)
84 # ifdef __LIBARCHIVE_BUILD
86 # define __LA_DECL __attribute__((dllexport)) extern
88 # define __LA_DECL __declspec(dllexport)
94 # define __LA_DECL __declspec(dllimport)
98 /* Static libraries or non-Windows needs no special declaration. */
102 #if defined(__GNUC__) && __GNUC__ >= 3 && !defined(__MINGW32__)
103 #define __LA_PRINTF(fmtarg, firstvararg) \
104 __attribute__((__format__ (__printf__, fmtarg, firstvararg)))
106 #define __LA_PRINTF(fmtarg, firstvararg) /* nothing */
114 * The version number is provided as both a macro and a function.
115 * The macro identifies the installed header; the function identifies
116 * the library version (which may not be the same if you're using a
117 * dynamically-linked version of the library). Of course, if the
118 * header and library are very different, you should expect some
119 * strangeness. Don't do that.
123 * The version number is expressed as a single integer that makes it
124 * easy to compare versions at build time: for version a.b.c, the
125 * version number is printf("%d%03d%03d",a,b,c). For example, if you
126 * know your application requires version 2.12.108 or later, you can
127 * assert that ARCHIVE_VERSION_NUMBER >= 2012108.
129 /* Note: Compiler will complain if this does not match archive_entry.h! */
130 #define ARCHIVE_VERSION_NUMBER 3000003
131 __LA_DECL int archive_version_number(void);
134 * Textual name/version of the library, useful for version displays.
136 #define ARCHIVE_VERSION_STRING "libarchive 3.0.3"
137 __LA_DECL const char * archive_version_string(void);
139 /* Declare our basic types. */
141 struct archive_entry;
144 * Error codes: Use archive_errno() and archive_error_string()
145 * to retrieve details. Unless specified otherwise, all functions
146 * that return 'int' use these codes.
148 #define ARCHIVE_EOF 1 /* Found end of archive. */
149 #define ARCHIVE_OK 0 /* Operation was successful. */
150 #define ARCHIVE_RETRY (-10) /* Retry might succeed. */
151 #define ARCHIVE_WARN (-20) /* Partial success. */
152 /* For example, if write_header "fails", then you can't push data. */
153 #define ARCHIVE_FAILED (-25) /* Current operation cannot complete. */
154 /* But if write_header is "fatal," then this archive is dead and useless. */
155 #define ARCHIVE_FATAL (-30) /* No more operations are possible. */
158 * As far as possible, archive_errno returns standard platform errno codes.
159 * Of course, the details vary by platform, so the actual definitions
160 * here are stored in "archive_platform.h". The symbols are listed here
161 * for reference; as a rule, clients should not need to know the exact
162 * platform-dependent error code.
164 /* Unrecognized or invalid file format. */
165 /* #define ARCHIVE_ERRNO_FILE_FORMAT */
166 /* Illegal usage of the library. */
167 /* #define ARCHIVE_ERRNO_PROGRAMMER_ERROR */
168 /* Unknown or unclassified error. */
169 /* #define ARCHIVE_ERRNO_MISC */
172 * Callbacks are invoked to automatically read/skip/write/open/close the
173 * archive. You can provide your own for complex tasks (like breaking
174 * archives across multiple tapes) or use standard ones built into the
178 /* Returns pointer and size of next block of data from archive. */
179 typedef __LA_SSIZE_T archive_read_callback(struct archive *,
180 void *_client_data, const void **_buffer);
182 /* Skips at most request bytes from archive and returns the skipped amount.
183 * This may skip fewer bytes than requested; it may even skip zero bytes.
184 * If you do skip fewer bytes than requested, libarchive will invoke your
185 * read callback and discard data as necessary to make up the full skip.
187 typedef __LA_INT64_T archive_skip_callback(struct archive *,
188 void *_client_data, __LA_INT64_T request);
190 /* Seeks to specified location in the file and returns the position.
191 * Whence values are SEEK_SET, SEEK_CUR, SEEK_END from stdio.h.
192 * Return ARCHIVE_FATAL if the seek fails for any reason.
194 typedef __LA_INT64_T archive_seek_callback(struct archive *,
195 void *_client_data, __LA_INT64_T offset, int whence);
197 /* Returns size actually written, zero on EOF, -1 on error. */
198 typedef __LA_SSIZE_T archive_write_callback(struct archive *,
200 const void *_buffer, size_t _length);
202 typedef int archive_open_callback(struct archive *, void *_client_data);
204 typedef int archive_close_callback(struct archive *, void *_client_data);
207 * Codes to identify various stream filters.
209 #define ARCHIVE_FILTER_NONE 0
210 #define ARCHIVE_FILTER_GZIP 1
211 #define ARCHIVE_FILTER_BZIP2 2
212 #define ARCHIVE_FILTER_COMPRESS 3
213 #define ARCHIVE_FILTER_PROGRAM 4
214 #define ARCHIVE_FILTER_LZMA 5
215 #define ARCHIVE_FILTER_XZ 6
216 #define ARCHIVE_FILTER_UU 7
217 #define ARCHIVE_FILTER_RPM 8
218 #define ARCHIVE_FILTER_LZIP 9
220 #if ARCHIVE_VERSION_NUMBER < 4000000
221 #define ARCHIVE_COMPRESSION_NONE ARCHIVE_FILTER_NONE
222 #define ARCHIVE_COMPRESSION_GZIP ARCHIVE_FILTER_GZIP
223 #define ARCHIVE_COMPRESSION_BZIP2 ARCHIVE_FILTER_BZIP2
224 #define ARCHIVE_COMPRESSION_COMPRESS ARCHIVE_FILTER_COMPRESS
225 #define ARCHIVE_COMPRESSION_PROGRAM ARCHIVE_FILTER_PROGRAM
226 #define ARCHIVE_COMPRESSION_LZMA ARCHIVE_FILTER_LZMA
227 #define ARCHIVE_COMPRESSION_XZ ARCHIVE_FILTER_XZ
228 #define ARCHIVE_COMPRESSION_UU ARCHIVE_FILTER_UU
229 #define ARCHIVE_COMPRESSION_RPM ARCHIVE_FILTER_RPM
230 #define ARCHIVE_COMPRESSION_LZIP ARCHIVE_FILTER_LZIP
234 * Codes returned by archive_format.
236 * Top 16 bits identifies the format family (e.g., "tar"); lower
237 * 16 bits indicate the variant. This is updated by read_next_header.
238 * Note that the lower 16 bits will often vary from entry to entry.
239 * In some cases, this variation occurs as libarchive learns more about
240 * the archive (for example, later entries might utilize extensions that
241 * weren't necessary earlier in the archive; in this case, libarchive
242 * will change the format code to indicate the extended format that
243 * was used). In other cases, it's because different tools have
244 * modified the archive and so different parts of the archive
245 * actually have slightly different formats. (Both tar and cpio store
246 * format codes in each entry, so it is quite possible for each
247 * entry to be in a different format.)
249 #define ARCHIVE_FORMAT_BASE_MASK 0xff0000
250 #define ARCHIVE_FORMAT_CPIO 0x10000
251 #define ARCHIVE_FORMAT_CPIO_POSIX (ARCHIVE_FORMAT_CPIO | 1)
252 #define ARCHIVE_FORMAT_CPIO_BIN_LE (ARCHIVE_FORMAT_CPIO | 2)
253 #define ARCHIVE_FORMAT_CPIO_BIN_BE (ARCHIVE_FORMAT_CPIO | 3)
254 #define ARCHIVE_FORMAT_CPIO_SVR4_NOCRC (ARCHIVE_FORMAT_CPIO | 4)
255 #define ARCHIVE_FORMAT_CPIO_SVR4_CRC (ARCHIVE_FORMAT_CPIO | 5)
256 #define ARCHIVE_FORMAT_CPIO_AFIO_LARGE (ARCHIVE_FORMAT_CPIO | 6)
257 #define ARCHIVE_FORMAT_SHAR 0x20000
258 #define ARCHIVE_FORMAT_SHAR_BASE (ARCHIVE_FORMAT_SHAR | 1)
259 #define ARCHIVE_FORMAT_SHAR_DUMP (ARCHIVE_FORMAT_SHAR | 2)
260 #define ARCHIVE_FORMAT_TAR 0x30000
261 #define ARCHIVE_FORMAT_TAR_USTAR (ARCHIVE_FORMAT_TAR | 1)
262 #define ARCHIVE_FORMAT_TAR_PAX_INTERCHANGE (ARCHIVE_FORMAT_TAR | 2)
263 #define ARCHIVE_FORMAT_TAR_PAX_RESTRICTED (ARCHIVE_FORMAT_TAR | 3)
264 #define ARCHIVE_FORMAT_TAR_GNUTAR (ARCHIVE_FORMAT_TAR | 4)
265 #define ARCHIVE_FORMAT_ISO9660 0x40000
266 #define ARCHIVE_FORMAT_ISO9660_ROCKRIDGE (ARCHIVE_FORMAT_ISO9660 | 1)
267 #define ARCHIVE_FORMAT_ZIP 0x50000
268 #define ARCHIVE_FORMAT_EMPTY 0x60000
269 #define ARCHIVE_FORMAT_AR 0x70000
270 #define ARCHIVE_FORMAT_AR_GNU (ARCHIVE_FORMAT_AR | 1)
271 #define ARCHIVE_FORMAT_AR_BSD (ARCHIVE_FORMAT_AR | 2)
272 #define ARCHIVE_FORMAT_MTREE 0x80000
273 #define ARCHIVE_FORMAT_RAW 0x90000
274 #define ARCHIVE_FORMAT_XAR 0xA0000
275 #define ARCHIVE_FORMAT_LHA 0xB0000
276 #define ARCHIVE_FORMAT_CAB 0xC0000
277 #define ARCHIVE_FORMAT_RAR 0xD0000
278 #define ARCHIVE_FORMAT_7ZIP 0xE0000
281 * Basic outline for reading an archive:
282 * 1) Ask archive_read_new for an archive reader object.
283 * 2) Update any global properties as appropriate.
284 * In particular, you'll certainly want to call appropriate
285 * archive_read_support_XXX functions.
286 * 3) Call archive_read_open_XXX to open the archive
287 * 4) Repeatedly call archive_read_next_header to get information about
288 * successive archive entries. Call archive_read_data to extract
289 * data for entries of interest.
290 * 5) Call archive_read_finish to end processing.
292 __LA_DECL struct archive *archive_read_new(void);
295 * The archive_read_support_XXX calls enable auto-detect for this
296 * archive handle. They also link in the necessary support code.
297 * For example, if you don't want bzlib linked in, don't invoke
298 * support_compression_bzip2(). The "all" functions provide the
302 #if ARCHIVE_VERSION_NUMBER < 4000000
303 __LA_DECL int archive_read_support_compression_all(struct archive *);
304 __LA_DECL int archive_read_support_compression_bzip2(struct archive *);
305 __LA_DECL int archive_read_support_compression_compress(struct archive *);
306 __LA_DECL int archive_read_support_compression_gzip(struct archive *);
307 __LA_DECL int archive_read_support_compression_lzip(struct archive *);
308 __LA_DECL int archive_read_support_compression_lzma(struct archive *);
309 __LA_DECL int archive_read_support_compression_none(struct archive *);
310 __LA_DECL int archive_read_support_compression_program(struct archive *,
311 const char *command);
312 __LA_DECL int archive_read_support_compression_program_signature
313 (struct archive *, const char *,
314 const void * /* match */, size_t);
316 __LA_DECL int archive_read_support_compression_rpm(struct archive *);
317 __LA_DECL int archive_read_support_compression_uu(struct archive *);
318 __LA_DECL int archive_read_support_compression_xz(struct archive *);
321 __LA_DECL int archive_read_support_filter_all(struct archive *);
322 __LA_DECL int archive_read_support_filter_bzip2(struct archive *);
323 __LA_DECL int archive_read_support_filter_compress(struct archive *);
324 __LA_DECL int archive_read_support_filter_gzip(struct archive *);
325 __LA_DECL int archive_read_support_filter_lzip(struct archive *);
326 __LA_DECL int archive_read_support_filter_lzma(struct archive *);
327 __LA_DECL int archive_read_support_filter_none(struct archive *);
328 __LA_DECL int archive_read_support_filter_program(struct archive *,
329 const char *command);
330 __LA_DECL int archive_read_support_filter_program_signature
331 (struct archive *, const char *,
332 const void * /* match */, size_t);
334 __LA_DECL int archive_read_support_filter_rpm(struct archive *);
335 __LA_DECL int archive_read_support_filter_uu(struct archive *);
336 __LA_DECL int archive_read_support_filter_xz(struct archive *);
338 __LA_DECL int archive_read_support_format_7zip(struct archive *);
339 __LA_DECL int archive_read_support_format_all(struct archive *);
340 __LA_DECL int archive_read_support_format_ar(struct archive *);
341 __LA_DECL int archive_read_support_format_by_code(struct archive *, int);
342 __LA_DECL int archive_read_support_format_cab(struct archive *);
343 __LA_DECL int archive_read_support_format_cpio(struct archive *);
344 __LA_DECL int archive_read_support_format_empty(struct archive *);
345 __LA_DECL int archive_read_support_format_gnutar(struct archive *);
346 __LA_DECL int archive_read_support_format_iso9660(struct archive *);
347 __LA_DECL int archive_read_support_format_lha(struct archive *);
348 __LA_DECL int archive_read_support_format_mtree(struct archive *);
349 __LA_DECL int archive_read_support_format_rar(struct archive *);
350 __LA_DECL int archive_read_support_format_raw(struct archive *);
351 __LA_DECL int archive_read_support_format_tar(struct archive *);
352 __LA_DECL int archive_read_support_format_xar(struct archive *);
353 __LA_DECL int archive_read_support_format_zip(struct archive *);
355 /* Set various callbacks. */
356 __LA_DECL int archive_read_set_open_callback(struct archive *,
357 archive_open_callback *);
358 __LA_DECL int archive_read_set_read_callback(struct archive *,
359 archive_read_callback *);
360 __LA_DECL int archive_read_set_seek_callback(struct archive *,
361 archive_seek_callback *);
362 __LA_DECL int archive_read_set_skip_callback(struct archive *,
363 archive_skip_callback *);
364 __LA_DECL int archive_read_set_close_callback(struct archive *,
365 archive_close_callback *);
366 /* The callback data is provided to all of the callbacks above. */
367 __LA_DECL int archive_read_set_callback_data(struct archive *, void *);
368 /* Opening freezes the callbacks. */
369 __LA_DECL int archive_read_open1(struct archive *);
371 /* Convenience wrappers around the above. */
372 __LA_DECL int archive_read_open(struct archive *, void *_client_data,
373 archive_open_callback *, archive_read_callback *,
374 archive_close_callback *);
375 __LA_DECL int archive_read_open2(struct archive *, void *_client_data,
376 archive_open_callback *, archive_read_callback *,
377 archive_skip_callback *, archive_close_callback *);
380 * A variety of shortcuts that invoke archive_read_open() with
381 * canned callbacks suitable for common situations. The ones that
382 * accept a block size handle tape blocking correctly.
384 /* Use this if you know the filename. Note: NULL indicates stdin. */
385 __LA_DECL int archive_read_open_filename(struct archive *,
386 const char *_filename, size_t _block_size);
387 __LA_DECL int archive_read_open_filename_w(struct archive *,
388 const wchar_t *_filename, size_t _block_size);
389 /* archive_read_open_file() is a deprecated synonym for ..._open_filename(). */
390 __LA_DECL int archive_read_open_file(struct archive *,
391 const char *_filename, size_t _block_size);
392 /* Read an archive that's stored in memory. */
393 __LA_DECL int archive_read_open_memory(struct archive *,
394 void * buff, size_t size);
395 /* A more involved version that is only used for internal testing. */
396 __LA_DECL int archive_read_open_memory2(struct archive *a, void *buff,
397 size_t size, size_t read_size);
398 /* Read an archive that's already open, using the file descriptor. */
399 __LA_DECL int archive_read_open_fd(struct archive *, int _fd,
401 /* Read an archive that's already open, using a FILE *. */
402 /* Note: DO NOT use this with tape drives. */
403 __LA_DECL int archive_read_open_FILE(struct archive *, FILE *_file);
405 /* Parses and returns next entry header. */
406 __LA_DECL int archive_read_next_header(struct archive *,
407 struct archive_entry **);
409 /* Parses and returns next entry header using the archive_entry passed in */
410 __LA_DECL int archive_read_next_header2(struct archive *,
411 struct archive_entry *);
414 * Retrieve the byte offset in UNCOMPRESSED data where last-read
417 __LA_DECL __LA_INT64_T archive_read_header_position(struct archive *);
419 /* Read data from the body of an entry. Similar to read(2). */
420 __LA_DECL __LA_SSIZE_T archive_read_data(struct archive *,
424 * A zero-copy version of archive_read_data that also exposes the file offset
425 * of each returned block. Note that the client has no way to specify
426 * the desired size of the block. The API does guarantee that offsets will
427 * be strictly increasing and that returned blocks will not overlap.
429 __LA_DECL int archive_read_data_block(struct archive *a,
430 const void **buff, size_t *size, __LA_INT64_T *offset);
433 * Some convenience functions that are built on archive_read_data:
434 * 'skip': skips entire entry
435 * 'into_buffer': writes data into memory buffer that you provide
436 * 'into_fd': writes data to specified filedes
438 __LA_DECL int archive_read_data_skip(struct archive *);
439 __LA_DECL int archive_read_data_into_fd(struct archive *, int fd);
444 /* Apply option to the format only. */
445 __LA_DECL int archive_read_set_format_option(struct archive *_a,
446 const char *m, const char *o,
448 /* Apply option to the filter only. */
449 __LA_DECL int archive_read_set_filter_option(struct archive *_a,
450 const char *m, const char *o,
452 /* Apply option to both the format and the filter. */
453 __LA_DECL int archive_read_set_option(struct archive *_a,
454 const char *m, const char *o,
456 /* Apply option string to both the format and the filter. */
457 __LA_DECL int archive_read_set_options(struct archive *_a,
461 * Convenience function to recreate the current entry (whose header
462 * has just been read) on disk.
464 * This does quite a bit more than just copy data to disk. It also:
465 * - Creates intermediate directories as required.
466 * - Manages directory permissions: non-writable directories will
467 * be initially created with write permission enabled; when the
468 * archive is closed, dir permissions are edited to the values specified
470 * - Checks hardlinks: hardlinks will not be extracted unless the
471 * linked-to file was also extracted within the same session. (TODO)
474 /* The "flags" argument selects optional behavior, 'OR' the flags you want. */
476 /* Default: Do not try to set owner/group. */
477 #define ARCHIVE_EXTRACT_OWNER (0x0001)
478 /* Default: Do obey umask, do not restore SUID/SGID/SVTX bits. */
479 #define ARCHIVE_EXTRACT_PERM (0x0002)
480 /* Default: Do not restore mtime/atime. */
481 #define ARCHIVE_EXTRACT_TIME (0x0004)
482 /* Default: Replace existing files. */
483 #define ARCHIVE_EXTRACT_NO_OVERWRITE (0x0008)
484 /* Default: Try create first, unlink only if create fails with EEXIST. */
485 #define ARCHIVE_EXTRACT_UNLINK (0x0010)
486 /* Default: Do not restore ACLs. */
487 #define ARCHIVE_EXTRACT_ACL (0x0020)
488 /* Default: Do not restore fflags. */
489 #define ARCHIVE_EXTRACT_FFLAGS (0x0040)
490 /* Default: Do not restore xattrs. */
491 #define ARCHIVE_EXTRACT_XATTR (0x0080)
492 /* Default: Do not try to guard against extracts redirected by symlinks. */
493 /* Note: With ARCHIVE_EXTRACT_UNLINK, will remove any intermediate symlink. */
494 #define ARCHIVE_EXTRACT_SECURE_SYMLINKS (0x0100)
495 /* Default: Do not reject entries with '..' as path elements. */
496 #define ARCHIVE_EXTRACT_SECURE_NODOTDOT (0x0200)
497 /* Default: Create parent directories as needed. */
498 #define ARCHIVE_EXTRACT_NO_AUTODIR (0x0400)
499 /* Default: Overwrite files, even if one on disk is newer. */
500 #define ARCHIVE_EXTRACT_NO_OVERWRITE_NEWER (0x0800)
501 /* Detect blocks of 0 and write holes instead. */
502 #define ARCHIVE_EXTRACT_SPARSE (0x1000)
503 /* Default: Do not restore Mac extended metadata. */
504 /* This has no effect except on Mac OS. */
505 #define ARCHIVE_EXTRACT_MAC_METADATA (0x2000)
507 __LA_DECL int archive_read_extract(struct archive *, struct archive_entry *,
509 __LA_DECL int archive_read_extract2(struct archive *, struct archive_entry *,
510 struct archive * /* dest */);
511 __LA_DECL void archive_read_extract_set_progress_callback(struct archive *,
512 void (*_progress_func)(void *), void *_user_data);
514 /* Record the dev/ino of a file that will not be written. This is
515 * generally set to the dev/ino of the archive being read. */
516 __LA_DECL void archive_read_extract_set_skip_file(struct archive *,
517 __LA_INT64_T, __LA_INT64_T);
519 /* Close the file and release most resources. */
520 __LA_DECL int archive_read_close(struct archive *);
521 /* Release all resources and destroy the object. */
522 /* Note that archive_read_free will call archive_read_close for you. */
523 __LA_DECL int archive_read_free(struct archive *);
524 #if ARCHIVE_VERSION_NUMBER < 4000000
525 /* Synonym for archive_read_free() for backwards compatibility. */
526 __LA_DECL int archive_read_finish(struct archive *);
530 * To create an archive:
531 * 1) Ask archive_write_new for an archive writer object.
532 * 2) Set any global properties. In particular, you should set
533 * the compression and format to use.
534 * 3) Call archive_write_open to open the file (most people
535 * will use archive_write_open_file or archive_write_open_fd,
536 * which provide convenient canned I/O callbacks for you).
538 * - construct an appropriate struct archive_entry structure
539 * - archive_write_header to write the header
540 * - archive_write_data to write the entry data
541 * 5) archive_write_close to close the output
542 * 6) archive_write_free to cleanup the writer and release resources
544 __LA_DECL struct archive *archive_write_new(void);
545 __LA_DECL int archive_write_set_bytes_per_block(struct archive *,
546 int bytes_per_block);
547 __LA_DECL int archive_write_get_bytes_per_block(struct archive *);
548 /* XXX This is badly misnamed; suggestions appreciated. XXX */
549 __LA_DECL int archive_write_set_bytes_in_last_block(struct archive *,
550 int bytes_in_last_block);
551 __LA_DECL int archive_write_get_bytes_in_last_block(struct archive *);
553 /* The dev/ino of a file that won't be archived. This is used
554 * to avoid recursively adding an archive to itself. */
555 __LA_DECL int archive_write_set_skip_file(struct archive *,
556 __LA_INT64_T, __LA_INT64_T);
558 #if ARCHIVE_VERSION_NUMBER < 4000000
559 __LA_DECL int archive_write_set_compression_bzip2(struct archive *);
560 __LA_DECL int archive_write_set_compression_compress(struct archive *);
561 __LA_DECL int archive_write_set_compression_gzip(struct archive *);
562 __LA_DECL int archive_write_set_compression_lzip(struct archive *);
563 __LA_DECL int archive_write_set_compression_lzma(struct archive *);
564 __LA_DECL int archive_write_set_compression_none(struct archive *);
565 __LA_DECL int archive_write_set_compression_program(struct archive *,
567 __LA_DECL int archive_write_set_compression_xz(struct archive *);
570 __LA_DECL int archive_write_add_filter_bzip2(struct archive *);
571 __LA_DECL int archive_write_add_filter_compress(struct archive *);
572 __LA_DECL int archive_write_add_filter_gzip(struct archive *);
573 __LA_DECL int archive_write_add_filter_lzip(struct archive *);
574 __LA_DECL int archive_write_add_filter_lzma(struct archive *);
575 __LA_DECL int archive_write_add_filter_none(struct archive *);
576 __LA_DECL int archive_write_add_filter_program(struct archive *,
578 __LA_DECL int archive_write_add_filter_xz(struct archive *);
581 /* A convenience function to set the format based on the code or name. */
582 __LA_DECL int archive_write_set_format(struct archive *, int format_code);
583 __LA_DECL int archive_write_set_format_by_name(struct archive *,
585 /* To minimize link pollution, use one or more of the following. */
586 __LA_DECL int archive_write_set_format_7zip(struct archive *);
587 __LA_DECL int archive_write_set_format_ar_bsd(struct archive *);
588 __LA_DECL int archive_write_set_format_ar_svr4(struct archive *);
589 __LA_DECL int archive_write_set_format_cpio(struct archive *);
590 __LA_DECL int archive_write_set_format_cpio_newc(struct archive *);
591 __LA_DECL int archive_write_set_format_gnutar(struct archive *);
592 __LA_DECL int archive_write_set_format_iso9660(struct archive *);
593 __LA_DECL int archive_write_set_format_mtree(struct archive *);
594 /* TODO: int archive_write_set_format_old_tar(struct archive *); */
595 __LA_DECL int archive_write_set_format_pax(struct archive *);
596 __LA_DECL int archive_write_set_format_pax_restricted(struct archive *);
597 __LA_DECL int archive_write_set_format_shar(struct archive *);
598 __LA_DECL int archive_write_set_format_shar_dump(struct archive *);
599 __LA_DECL int archive_write_set_format_ustar(struct archive *);
600 __LA_DECL int archive_write_set_format_xar(struct archive *);
601 __LA_DECL int archive_write_set_format_zip(struct archive *);
602 __LA_DECL int archive_write_open(struct archive *, void *,
603 archive_open_callback *, archive_write_callback *,
604 archive_close_callback *);
605 __LA_DECL int archive_write_open_fd(struct archive *, int _fd);
606 __LA_DECL int archive_write_open_filename(struct archive *, const char *_file);
607 __LA_DECL int archive_write_open_filename_w(struct archive *,
608 const wchar_t *_file);
609 /* A deprecated synonym for archive_write_open_filename() */
610 __LA_DECL int archive_write_open_file(struct archive *, const char *_file);
611 __LA_DECL int archive_write_open_FILE(struct archive *, FILE *);
612 /* _buffSize is the size of the buffer, _used refers to a variable that
613 * will be updated after each write into the buffer. */
614 __LA_DECL int archive_write_open_memory(struct archive *,
615 void *_buffer, size_t _buffSize, size_t *_used);
618 * Note that the library will truncate writes beyond the size provided
619 * to archive_write_header or pad if the provided data is short.
621 __LA_DECL int archive_write_header(struct archive *,
622 struct archive_entry *);
623 __LA_DECL __LA_SSIZE_T archive_write_data(struct archive *,
624 const void *, size_t);
626 /* This interface is currently only available for archive_write_disk handles. */
627 __LA_DECL __LA_SSIZE_T archive_write_data_block(struct archive *,
628 const void *, size_t, __LA_INT64_T);
630 __LA_DECL int archive_write_finish_entry(struct archive *);
631 __LA_DECL int archive_write_close(struct archive *);
632 /* This can fail if the archive wasn't already closed, in which case
633 * archive_write_free() will implicitly call archive_write_close(). */
634 __LA_DECL int archive_write_free(struct archive *);
635 #if ARCHIVE_VERSION_NUMBER < 4000000
636 /* Synonym for archive_write_free() for backwards compatibility. */
637 __LA_DECL int archive_write_finish(struct archive *);
643 /* Apply option to the format only. */
644 __LA_DECL int archive_write_set_format_option(struct archive *_a,
645 const char *m, const char *o,
647 /* Apply option to the filter only. */
648 __LA_DECL int archive_write_set_filter_option(struct archive *_a,
649 const char *m, const char *o,
651 /* Apply option to both the format and the filter. */
652 __LA_DECL int archive_write_set_option(struct archive *_a,
653 const char *m, const char *o,
655 /* Apply option string to both the format and the filter. */
656 __LA_DECL int archive_write_set_options(struct archive *_a,
660 * ARCHIVE_WRITE_DISK API
662 * To create objects on disk:
663 * 1) Ask archive_write_disk_new for a new archive_write_disk object.
664 * 2) Set any global properties. In particular, you probably
665 * want to set the options.
667 * - construct an appropriate struct archive_entry structure
668 * - archive_write_header to create the file/dir/etc on disk
669 * - archive_write_data to write the entry data
670 * 4) archive_write_free to cleanup the writer and release resources
672 * In particular, you can use this in conjunction with archive_read()
673 * to pull entries out of an archive and create them on disk.
675 __LA_DECL struct archive *archive_write_disk_new(void);
676 /* This file will not be overwritten. */
677 __LA_DECL int archive_write_disk_set_skip_file(struct archive *,
678 __LA_INT64_T, __LA_INT64_T);
679 /* Set flags to control how the next item gets created.
680 * This accepts a bitmask of ARCHIVE_EXTRACT_XXX flags defined above. */
681 __LA_DECL int archive_write_disk_set_options(struct archive *,
684 * The lookup functions are given uname/uid (or gname/gid) pairs and
685 * return a uid (gid) suitable for this system. These are used for
686 * restoring ownership and for setting ACLs. The default functions
687 * are naive, they just return the uid/gid. These are small, so reasonable
688 * for applications that don't need to preserve ownership; they
689 * are probably also appropriate for applications that are doing
690 * same-system backup and restore.
693 * The "standard" lookup functions use common system calls to lookup
694 * the uname/gname, falling back to the uid/gid if the names can't be
695 * found. They cache lookups and are reasonably fast, but can be very
696 * large, so they are not used unless you ask for them. In
697 * particular, these match the specifications of POSIX "pax" and old
700 __LA_DECL int archive_write_disk_set_standard_lookup(struct archive *);
702 * If neither the default (naive) nor the standard (big) functions suit
703 * your needs, you can write your own and register them. Be sure to
704 * include a cleanup function if you have allocated private data.
706 __LA_DECL int archive_write_disk_set_group_lookup(struct archive *,
707 void * /* private_data */,
708 __LA_INT64_T (*)(void *, const char *, __LA_INT64_T),
709 void (* /* cleanup */)(void *));
710 __LA_DECL int archive_write_disk_set_user_lookup(struct archive *,
711 void * /* private_data */,
712 __LA_INT64_T (*)(void *, const char *, __LA_INT64_T),
713 void (* /* cleanup */)(void *));
714 __LA_DECL __LA_INT64_T archive_write_disk_gid(struct archive *, const char *, __LA_INT64_T);
715 __LA_DECL __LA_INT64_T archive_write_disk_uid(struct archive *, const char *, __LA_INT64_T);
718 * ARCHIVE_READ_DISK API
720 * This is still evolving and somewhat experimental.
722 __LA_DECL struct archive *archive_read_disk_new(void);
723 /* The names for symlink modes here correspond to an old BSD
724 * command-line argument convention: -L, -P, -H */
725 /* Follow all symlinks. */
726 __LA_DECL int archive_read_disk_set_symlink_logical(struct archive *);
727 /* Follow no symlinks. */
728 __LA_DECL int archive_read_disk_set_symlink_physical(struct archive *);
729 /* Follow symlink initially, then not. */
730 __LA_DECL int archive_read_disk_set_symlink_hybrid(struct archive *);
731 /* TODO: Handle Linux stat32/stat64 ugliness. <sigh> */
732 __LA_DECL int archive_read_disk_entry_from_file(struct archive *,
733 struct archive_entry *, int /* fd */, const struct stat *);
734 /* Look up gname for gid or uname for uid. */
735 /* Default implementations are very, very stupid. */
736 __LA_DECL const char *archive_read_disk_gname(struct archive *, __LA_INT64_T);
737 __LA_DECL const char *archive_read_disk_uname(struct archive *, __LA_INT64_T);
738 /* "Standard" implementation uses getpwuid_r, getgrgid_r and caches the
739 * results for performance. */
740 __LA_DECL int archive_read_disk_set_standard_lookup(struct archive *);
741 /* You can install your own lookups if you like. */
742 __LA_DECL int archive_read_disk_set_gname_lookup(struct archive *,
743 void * /* private_data */,
744 const char *(* /* lookup_fn */)(void *, __LA_INT64_T),
745 void (* /* cleanup_fn */)(void *));
746 __LA_DECL int archive_read_disk_set_uname_lookup(struct archive *,
747 void * /* private_data */,
748 const char *(* /* lookup_fn */)(void *, __LA_INT64_T),
749 void (* /* cleanup_fn */)(void *));
750 /* Start traversal. */
751 __LA_DECL int archive_read_disk_open(struct archive *, const char *);
752 __LA_DECL int archive_read_disk_open_w(struct archive *, const wchar_t *);
754 * Request that current entry be visited. If you invoke it on every
755 * directory, you'll get a physical traversal. This is ignored if the
756 * current entry isn't a directory or a link to a directory. So, if
757 * you invoke this on every returned path, you'll get a full logical
760 __LA_DECL int archive_read_disk_descend(struct archive *);
761 __LA_DECL int archive_read_disk_current_filesystem(struct archive *);
762 __LA_DECL int archive_read_disk_current_filesystem_is_synthetic(struct archive *);
763 __LA_DECL int archive_read_disk_current_filesystem_is_remote(struct archive *);
764 /* Request that the access time of the entry visited by travesal be restored. */
765 __LA_DECL int archive_read_disk_set_atime_restored(struct archive *);
768 * Accessor functions to read/set various information in
769 * the struct archive object:
772 /* Number of filters in the current filter pipeline. */
773 /* Filter #0 is the one closest to the format, -1 is a synonym for the
774 * last filter, which is always the pseudo-filter that wraps the
775 * client callbacks. */
776 __LA_DECL int archive_filter_count(struct archive *);
777 __LA_DECL __LA_INT64_T archive_filter_bytes(struct archive *, int);
778 __LA_DECL int archive_filter_code(struct archive *, int);
779 __LA_DECL const char * archive_filter_name(struct archive *, int);
781 #if ARCHIVE_VERSION_NUMBER < 4000000
782 /* These don't properly handle multiple filters, so are deprecated and
783 * will eventually be removed. */
784 /* As of libarchive 3.0, this is an alias for archive_filter_bytes(a, -1); */
785 __LA_DECL __LA_INT64_T archive_position_compressed(struct archive *);
786 /* As of libarchive 3.0, this is an alias for archive_filter_bytes(a, 0); */
787 __LA_DECL __LA_INT64_T archive_position_uncompressed(struct archive *);
788 /* As of libarchive 3.0, this is an alias for archive_filter_name(a, 0); */
789 __LA_DECL const char *archive_compression_name(struct archive *);
790 /* As of libarchive 3.0, this is an alias for archive_filter_code(a, 0); */
791 __LA_DECL int archive_compression(struct archive *);
794 __LA_DECL int archive_errno(struct archive *);
795 __LA_DECL const char *archive_error_string(struct archive *);
796 __LA_DECL const char *archive_format_name(struct archive *);
797 __LA_DECL int archive_format(struct archive *);
798 __LA_DECL void archive_clear_error(struct archive *);
799 __LA_DECL void archive_set_error(struct archive *, int _err,
800 const char *fmt, ...) __LA_PRINTF(3, 4);
801 __LA_DECL void archive_copy_error(struct archive *dest,
802 struct archive *src);
803 __LA_DECL int archive_file_count(struct archive *);
809 /* These are meaningless outside of this header. */
814 /* These need to remain defined because they're used in the
815 * callback type definitions. XXX Fix this. This is ugly. XXX */
816 /* #undef __LA_INT64_T */
817 /* #undef __LA_SSIZE_T */
819 #endif /* !ARCHIVE_H_INCLUDED */