2 * Copyright (c) 2003-2008 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.
28 #ifndef ARCHIVE_ENTRY_H_INCLUDED
29 #define ARCHIVE_ENTRY_H_INCLUDED
31 /* Note: Compiler will complain if this does not match archive.h! */
32 #define ARCHIVE_VERSION_NUMBER 3001002
35 * Note: archive_entry.h is for use outside of libarchive; the
36 * configuration headers (config.h, archive_platform.h, etc.) are
37 * purely internal. Do NOT use HAVE_XXX configuration macros to
38 * control the behavior of this header! If you must conditionalize,
39 * use predefined compiler and/or platform macros.
42 #include <sys/types.h>
43 #include <stddef.h> /* for wchar_t */
46 #if defined(_WIN32) && !defined(__CYGWIN__)
50 /* Get a suitable 64-bit integer type. */
51 #if defined(_WIN32) && !defined(__CYGWIN__)
52 # define __LA_INT64_T __int64
56 # define __LA_INT64_T long long
58 # define __LA_INT64_T int64_t
62 /* Get a suitable definition for mode_t */
63 #if ARCHIVE_VERSION_NUMBER >= 3999000
64 /* Switch to plain 'int' for libarchive 4.0. It's less broken than 'mode_t' */
65 # define __LA_MODE_T int
66 #elif defined(_WIN32) && !defined(__CYGWIN__) && !defined(__BORLANDC__)
67 # define __LA_MODE_T unsigned short
69 # define __LA_MODE_T mode_t
73 * On Windows, define LIBARCHIVE_STATIC if you're building or using a
74 * .lib. The default here assumes you're building a DLL. Only
75 * libarchive source should ever define __LIBARCHIVE_BUILD.
77 #if ((defined __WIN32__) || (defined _WIN32) || defined(__CYGWIN__)) && (!defined LIBARCHIVE_STATIC)
78 # ifdef __LIBARCHIVE_BUILD
80 # define __LA_DECL __attribute__((dllexport)) extern
82 # define __LA_DECL __declspec(dllexport)
88 # define __LA_DECL __declspec(dllimport)
92 /* Static libraries on all platforms and shared libraries on non-Windows. */
101 * Description of an archive entry.
103 * You can think of this as "struct stat" with some text fields added in.
105 * TODO: Add "comment", "charset", and possibly other entries that are
106 * supported by "pax interchange" format. However, GNU, ustar, cpio,
107 * and other variants don't support these features, so they're not an
108 * excruciatingly high priority right now.
110 * TODO: "pax interchange" format allows essentially arbitrary
111 * key/value attributes to be attached to any entry. Supporting
112 * such extensions may make this library useful for special
113 * applications (e.g., a package manager could attach special
114 * package-management attributes to each entry).
117 struct archive_entry;
120 * File-type constants. These are returned from archive_entry_filetype()
121 * and passed to archive_entry_set_filetype().
123 * These values match S_XXX defines on every platform I've checked,
124 * including Windows, AIX, Linux, Solaris, and BSD. They're
125 * (re)defined here because platforms generally don't define the ones
126 * they don't support. For example, Windows doesn't define S_IFLNK or
127 * S_IFBLK. Instead of having a mass of conditional logic and system
128 * checks to define any S_XXX values that aren't supported locally,
129 * I've just defined a new set of such constants so that
130 * libarchive-based applications can manipulate and identify archive
131 * entries properly even if the hosting platform can't store them on
134 * These values are also used directly within some portable formats,
135 * such as cpio. If you find a platform that varies from these, the
136 * correct solution is to leave these alone and translate from these
137 * portable values to platform-native values when entries are read from
138 * or written to disk.
141 * In libarchive 4.0, we can drop the casts here.
142 * They're needed to work around Borland C's broken mode_t.
144 #define AE_IFMT ((__LA_MODE_T)0170000)
145 #define AE_IFREG ((__LA_MODE_T)0100000)
146 #define AE_IFLNK ((__LA_MODE_T)0120000)
147 #define AE_IFSOCK ((__LA_MODE_T)0140000)
148 #define AE_IFCHR ((__LA_MODE_T)0020000)
149 #define AE_IFBLK ((__LA_MODE_T)0060000)
150 #define AE_IFDIR ((__LA_MODE_T)0040000)
151 #define AE_IFIFO ((__LA_MODE_T)0010000)
154 * Basic object manipulation
157 __LA_DECL struct archive_entry *archive_entry_clear(struct archive_entry *);
158 /* The 'clone' function does a deep copy; all of the strings are copied too. */
159 __LA_DECL struct archive_entry *archive_entry_clone(struct archive_entry *);
160 __LA_DECL void archive_entry_free(struct archive_entry *);
161 __LA_DECL struct archive_entry *archive_entry_new(void);
164 * This form of archive_entry_new2() will pull character-set
165 * conversion information from the specified archive handle. The
166 * older archive_entry_new(void) form is equivalent to calling
167 * archive_entry_new2(NULL) and will result in the use of an internal
168 * default character-set conversion.
170 __LA_DECL struct archive_entry *archive_entry_new2(struct archive *);
173 * Retrieve fields from an archive_entry.
175 * There are a number of implicit conversions among these fields. For
176 * example, if a regular string field is set and you read the _w wide
177 * character field, the entry will implicitly convert narrow-to-wide
178 * using the current locale. Similarly, dev values are automatically
179 * updated when you write devmajor or devminor and vice versa.
181 * In addition, fields can be "set" or "unset." Unset string fields
182 * return NULL, non-string fields have _is_set() functions to test
183 * whether they've been set. You can "unset" a string field by
184 * assigning NULL; non-string fields have _unset() functions to
187 * Note: There is one ambiguity in the above; string fields will
188 * also return NULL when implicit character set conversions fail.
189 * This is usually what you want.
191 __LA_DECL time_t archive_entry_atime(struct archive_entry *);
192 __LA_DECL long archive_entry_atime_nsec(struct archive_entry *);
193 __LA_DECL int archive_entry_atime_is_set(struct archive_entry *);
194 __LA_DECL time_t archive_entry_birthtime(struct archive_entry *);
195 __LA_DECL long archive_entry_birthtime_nsec(struct archive_entry *);
196 __LA_DECL int archive_entry_birthtime_is_set(struct archive_entry *);
197 __LA_DECL time_t archive_entry_ctime(struct archive_entry *);
198 __LA_DECL long archive_entry_ctime_nsec(struct archive_entry *);
199 __LA_DECL int archive_entry_ctime_is_set(struct archive_entry *);
200 __LA_DECL dev_t archive_entry_dev(struct archive_entry *);
201 __LA_DECL int archive_entry_dev_is_set(struct archive_entry *);
202 __LA_DECL dev_t archive_entry_devmajor(struct archive_entry *);
203 __LA_DECL dev_t archive_entry_devminor(struct archive_entry *);
204 __LA_DECL __LA_MODE_T archive_entry_filetype(struct archive_entry *);
205 __LA_DECL void archive_entry_fflags(struct archive_entry *,
206 unsigned long * /* set */,
207 unsigned long * /* clear */);
208 __LA_DECL const char *archive_entry_fflags_text(struct archive_entry *);
209 __LA_DECL __LA_INT64_T archive_entry_gid(struct archive_entry *);
210 __LA_DECL const char *archive_entry_gname(struct archive_entry *);
211 __LA_DECL const wchar_t *archive_entry_gname_w(struct archive_entry *);
212 __LA_DECL const char *archive_entry_hardlink(struct archive_entry *);
213 __LA_DECL const wchar_t *archive_entry_hardlink_w(struct archive_entry *);
214 __LA_DECL __LA_INT64_T archive_entry_ino(struct archive_entry *);
215 __LA_DECL __LA_INT64_T archive_entry_ino64(struct archive_entry *);
216 __LA_DECL int archive_entry_ino_is_set(struct archive_entry *);
217 __LA_DECL __LA_MODE_T archive_entry_mode(struct archive_entry *);
218 __LA_DECL time_t archive_entry_mtime(struct archive_entry *);
219 __LA_DECL long archive_entry_mtime_nsec(struct archive_entry *);
220 __LA_DECL int archive_entry_mtime_is_set(struct archive_entry *);
221 __LA_DECL unsigned int archive_entry_nlink(struct archive_entry *);
222 __LA_DECL const char *archive_entry_pathname(struct archive_entry *);
223 __LA_DECL const wchar_t *archive_entry_pathname_w(struct archive_entry *);
224 __LA_DECL __LA_MODE_T archive_entry_perm(struct archive_entry *);
225 __LA_DECL dev_t archive_entry_rdev(struct archive_entry *);
226 __LA_DECL dev_t archive_entry_rdevmajor(struct archive_entry *);
227 __LA_DECL dev_t archive_entry_rdevminor(struct archive_entry *);
228 __LA_DECL const char *archive_entry_sourcepath(struct archive_entry *);
229 __LA_DECL const wchar_t *archive_entry_sourcepath_w(struct archive_entry *);
230 __LA_DECL __LA_INT64_T archive_entry_size(struct archive_entry *);
231 __LA_DECL int archive_entry_size_is_set(struct archive_entry *);
232 __LA_DECL const char *archive_entry_strmode(struct archive_entry *);
233 __LA_DECL const char *archive_entry_symlink(struct archive_entry *);
234 __LA_DECL const wchar_t *archive_entry_symlink_w(struct archive_entry *);
235 __LA_DECL __LA_INT64_T archive_entry_uid(struct archive_entry *);
236 __LA_DECL const char *archive_entry_uname(struct archive_entry *);
237 __LA_DECL const wchar_t *archive_entry_uname_w(struct archive_entry *);
240 * Set fields in an archive_entry.
242 * Note: Before libarchive 2.4, there were 'set' and 'copy' versions
243 * of the string setters. 'copy' copied the actual string, 'set' just
244 * stored the pointer. In libarchive 2.4 and later, strings are
248 __LA_DECL void archive_entry_set_atime(struct archive_entry *, time_t, long);
249 __LA_DECL void archive_entry_unset_atime(struct archive_entry *);
250 #if defined(_WIN32) && !defined(__CYGWIN__)
251 __LA_DECL void archive_entry_copy_bhfi(struct archive_entry *, BY_HANDLE_FILE_INFORMATION *);
253 __LA_DECL void archive_entry_set_birthtime(struct archive_entry *, time_t, long);
254 __LA_DECL void archive_entry_unset_birthtime(struct archive_entry *);
255 __LA_DECL void archive_entry_set_ctime(struct archive_entry *, time_t, long);
256 __LA_DECL void archive_entry_unset_ctime(struct archive_entry *);
257 __LA_DECL void archive_entry_set_dev(struct archive_entry *, dev_t);
258 __LA_DECL void archive_entry_set_devmajor(struct archive_entry *, dev_t);
259 __LA_DECL void archive_entry_set_devminor(struct archive_entry *, dev_t);
260 __LA_DECL void archive_entry_set_filetype(struct archive_entry *, unsigned int);
261 __LA_DECL void archive_entry_set_fflags(struct archive_entry *,
262 unsigned long /* set */, unsigned long /* clear */);
263 /* Returns pointer to start of first invalid token, or NULL if none. */
264 /* Note that all recognized tokens are processed, regardless. */
265 __LA_DECL const char *archive_entry_copy_fflags_text(struct archive_entry *,
267 __LA_DECL const wchar_t *archive_entry_copy_fflags_text_w(struct archive_entry *,
269 __LA_DECL void archive_entry_set_gid(struct archive_entry *, __LA_INT64_T);
270 __LA_DECL void archive_entry_set_gname(struct archive_entry *, const char *);
271 __LA_DECL void archive_entry_copy_gname(struct archive_entry *, const char *);
272 __LA_DECL void archive_entry_copy_gname_w(struct archive_entry *, const wchar_t *);
273 __LA_DECL int archive_entry_update_gname_utf8(struct archive_entry *, const char *);
274 __LA_DECL void archive_entry_set_hardlink(struct archive_entry *, const char *);
275 __LA_DECL void archive_entry_copy_hardlink(struct archive_entry *, const char *);
276 __LA_DECL void archive_entry_copy_hardlink_w(struct archive_entry *, const wchar_t *);
277 __LA_DECL int archive_entry_update_hardlink_utf8(struct archive_entry *, const char *);
278 __LA_DECL void archive_entry_set_ino(struct archive_entry *, __LA_INT64_T);
279 __LA_DECL void archive_entry_set_ino64(struct archive_entry *, __LA_INT64_T);
280 __LA_DECL void archive_entry_set_link(struct archive_entry *, const char *);
281 __LA_DECL void archive_entry_copy_link(struct archive_entry *, const char *);
282 __LA_DECL void archive_entry_copy_link_w(struct archive_entry *, const wchar_t *);
283 __LA_DECL int archive_entry_update_link_utf8(struct archive_entry *, const char *);
284 __LA_DECL void archive_entry_set_mode(struct archive_entry *, __LA_MODE_T);
285 __LA_DECL void archive_entry_set_mtime(struct archive_entry *, time_t, long);
286 __LA_DECL void archive_entry_unset_mtime(struct archive_entry *);
287 __LA_DECL void archive_entry_set_nlink(struct archive_entry *, unsigned int);
288 __LA_DECL void archive_entry_set_pathname(struct archive_entry *, const char *);
289 __LA_DECL void archive_entry_copy_pathname(struct archive_entry *, const char *);
290 __LA_DECL void archive_entry_copy_pathname_w(struct archive_entry *, const wchar_t *);
291 __LA_DECL int archive_entry_update_pathname_utf8(struct archive_entry *, const char *);
292 __LA_DECL void archive_entry_set_perm(struct archive_entry *, __LA_MODE_T);
293 __LA_DECL void archive_entry_set_rdev(struct archive_entry *, dev_t);
294 __LA_DECL void archive_entry_set_rdevmajor(struct archive_entry *, dev_t);
295 __LA_DECL void archive_entry_set_rdevminor(struct archive_entry *, dev_t);
296 __LA_DECL void archive_entry_set_size(struct archive_entry *, __LA_INT64_T);
297 __LA_DECL void archive_entry_unset_size(struct archive_entry *);
298 __LA_DECL void archive_entry_copy_sourcepath(struct archive_entry *, const char *);
299 __LA_DECL void archive_entry_copy_sourcepath_w(struct archive_entry *, const wchar_t *);
300 __LA_DECL void archive_entry_set_symlink(struct archive_entry *, const char *);
301 __LA_DECL void archive_entry_copy_symlink(struct archive_entry *, const char *);
302 __LA_DECL void archive_entry_copy_symlink_w(struct archive_entry *, const wchar_t *);
303 __LA_DECL int archive_entry_update_symlink_utf8(struct archive_entry *, const char *);
304 __LA_DECL void archive_entry_set_uid(struct archive_entry *, __LA_INT64_T);
305 __LA_DECL void archive_entry_set_uname(struct archive_entry *, const char *);
306 __LA_DECL void archive_entry_copy_uname(struct archive_entry *, const char *);
307 __LA_DECL void archive_entry_copy_uname_w(struct archive_entry *, const wchar_t *);
308 __LA_DECL int archive_entry_update_uname_utf8(struct archive_entry *, const char *);
310 * Routines to bulk copy fields to/from a platform-native "struct
311 * stat." Libarchive used to just store a struct stat inside of each
312 * archive_entry object, but this created issues when trying to
313 * manipulate archives on systems different than the ones they were
316 * TODO: On Linux and other LFS systems, provide both stat32 and
317 * stat64 versions of these functions and all of the macro glue so
318 * that archive_entry_stat is magically defined to
319 * archive_entry_stat32 or archive_entry_stat64 as appropriate.
321 __LA_DECL const struct stat *archive_entry_stat(struct archive_entry *);
322 __LA_DECL void archive_entry_copy_stat(struct archive_entry *, const struct stat *);
325 * Storage for Mac OS-specific AppleDouble metadata information.
326 * Apple-format tar files store a separate binary blob containing
327 * encoded metadata with ACL, extended attributes, etc.
328 * This provides a place to store that blob.
331 __LA_DECL const void * archive_entry_mac_metadata(struct archive_entry *, size_t *);
332 __LA_DECL void archive_entry_copy_mac_metadata(struct archive_entry *, const void *, size_t);
335 * ACL routines. This used to simply store and return text-format ACL
336 * strings, but that proved insufficient for a number of reasons:
337 * = clients need control over uname/uid and gname/gid mappings
338 * = there are many different ACL text formats
339 * = would like to be able to read/convert archives containing ACLs
340 * on platforms that lack ACL libraries
342 * This last point, in particular, forces me to implement a reasonably
343 * complete set of ACL support routines.
349 #define ARCHIVE_ENTRY_ACL_EXECUTE 0x00000001
350 #define ARCHIVE_ENTRY_ACL_WRITE 0x00000002
351 #define ARCHIVE_ENTRY_ACL_READ 0x00000004
352 #define ARCHIVE_ENTRY_ACL_READ_DATA 0x00000008
353 #define ARCHIVE_ENTRY_ACL_LIST_DIRECTORY 0x00000008
354 #define ARCHIVE_ENTRY_ACL_WRITE_DATA 0x00000010
355 #define ARCHIVE_ENTRY_ACL_ADD_FILE 0x00000010
356 #define ARCHIVE_ENTRY_ACL_APPEND_DATA 0x00000020
357 #define ARCHIVE_ENTRY_ACL_ADD_SUBDIRECTORY 0x00000020
358 #define ARCHIVE_ENTRY_ACL_READ_NAMED_ATTRS 0x00000040
359 #define ARCHIVE_ENTRY_ACL_WRITE_NAMED_ATTRS 0x00000080
360 #define ARCHIVE_ENTRY_ACL_DELETE_CHILD 0x00000100
361 #define ARCHIVE_ENTRY_ACL_READ_ATTRIBUTES 0x00000200
362 #define ARCHIVE_ENTRY_ACL_WRITE_ATTRIBUTES 0x00000400
363 #define ARCHIVE_ENTRY_ACL_DELETE 0x00000800
364 #define ARCHIVE_ENTRY_ACL_READ_ACL 0x00001000
365 #define ARCHIVE_ENTRY_ACL_WRITE_ACL 0x00002000
366 #define ARCHIVE_ENTRY_ACL_WRITE_OWNER 0x00004000
367 #define ARCHIVE_ENTRY_ACL_SYNCHRONIZE 0x00008000
369 #define ARCHIVE_ENTRY_ACL_PERMS_POSIX1E \
370 (ARCHIVE_ENTRY_ACL_EXECUTE \
371 | ARCHIVE_ENTRY_ACL_WRITE \
372 | ARCHIVE_ENTRY_ACL_READ)
374 #define ARCHIVE_ENTRY_ACL_PERMS_NFS4 \
375 (ARCHIVE_ENTRY_ACL_EXECUTE \
376 | ARCHIVE_ENTRY_ACL_READ_DATA \
377 | ARCHIVE_ENTRY_ACL_LIST_DIRECTORY \
378 | ARCHIVE_ENTRY_ACL_WRITE_DATA \
379 | ARCHIVE_ENTRY_ACL_ADD_FILE \
380 | ARCHIVE_ENTRY_ACL_APPEND_DATA \
381 | ARCHIVE_ENTRY_ACL_ADD_SUBDIRECTORY \
382 | ARCHIVE_ENTRY_ACL_READ_NAMED_ATTRS \
383 | ARCHIVE_ENTRY_ACL_WRITE_NAMED_ATTRS \
384 | ARCHIVE_ENTRY_ACL_DELETE_CHILD \
385 | ARCHIVE_ENTRY_ACL_READ_ATTRIBUTES \
386 | ARCHIVE_ENTRY_ACL_WRITE_ATTRIBUTES \
387 | ARCHIVE_ENTRY_ACL_DELETE \
388 | ARCHIVE_ENTRY_ACL_READ_ACL \
389 | ARCHIVE_ENTRY_ACL_WRITE_ACL \
390 | ARCHIVE_ENTRY_ACL_WRITE_OWNER \
391 | ARCHIVE_ENTRY_ACL_SYNCHRONIZE)
394 * Inheritance values (NFS4 ACLs only); included in permset.
396 #define ARCHIVE_ENTRY_ACL_ENTRY_FILE_INHERIT 0x02000000
397 #define ARCHIVE_ENTRY_ACL_ENTRY_DIRECTORY_INHERIT 0x04000000
398 #define ARCHIVE_ENTRY_ACL_ENTRY_NO_PROPAGATE_INHERIT 0x08000000
399 #define ARCHIVE_ENTRY_ACL_ENTRY_INHERIT_ONLY 0x10000000
400 #define ARCHIVE_ENTRY_ACL_ENTRY_SUCCESSFUL_ACCESS 0x20000000
401 #define ARCHIVE_ENTRY_ACL_ENTRY_FAILED_ACCESS 0x40000000
403 #define ARCHIVE_ENTRY_ACL_INHERITANCE_NFS4 \
404 (ARCHIVE_ENTRY_ACL_ENTRY_FILE_INHERIT \
405 | ARCHIVE_ENTRY_ACL_ENTRY_DIRECTORY_INHERIT \
406 | ARCHIVE_ENTRY_ACL_ENTRY_NO_PROPAGATE_INHERIT \
407 | ARCHIVE_ENTRY_ACL_ENTRY_INHERIT_ONLY \
408 | ARCHIVE_ENTRY_ACL_ENTRY_SUCCESSFUL_ACCESS \
409 | ARCHIVE_ENTRY_ACL_ENTRY_FAILED_ACCESS)
411 /* We need to be able to specify combinations of these. */
412 #define ARCHIVE_ENTRY_ACL_TYPE_ACCESS 256 /* POSIX.1e only */
413 #define ARCHIVE_ENTRY_ACL_TYPE_DEFAULT 512 /* POSIX.1e only */
414 #define ARCHIVE_ENTRY_ACL_TYPE_ALLOW 1024 /* NFS4 only */
415 #define ARCHIVE_ENTRY_ACL_TYPE_DENY 2048 /* NFS4 only */
416 #define ARCHIVE_ENTRY_ACL_TYPE_AUDIT 4096 /* NFS4 only */
417 #define ARCHIVE_ENTRY_ACL_TYPE_ALARM 8192 /* NFS4 only */
418 #define ARCHIVE_ENTRY_ACL_TYPE_POSIX1E (ARCHIVE_ENTRY_ACL_TYPE_ACCESS \
419 | ARCHIVE_ENTRY_ACL_TYPE_DEFAULT)
420 #define ARCHIVE_ENTRY_ACL_TYPE_NFS4 (ARCHIVE_ENTRY_ACL_TYPE_ALLOW \
421 | ARCHIVE_ENTRY_ACL_TYPE_DENY \
422 | ARCHIVE_ENTRY_ACL_TYPE_AUDIT \
423 | ARCHIVE_ENTRY_ACL_TYPE_ALARM)
425 /* Tag values mimic POSIX.1e */
426 #define ARCHIVE_ENTRY_ACL_USER 10001 /* Specified user. */
427 #define ARCHIVE_ENTRY_ACL_USER_OBJ 10002 /* User who owns the file. */
428 #define ARCHIVE_ENTRY_ACL_GROUP 10003 /* Specified group. */
429 #define ARCHIVE_ENTRY_ACL_GROUP_OBJ 10004 /* Group who owns the file. */
430 #define ARCHIVE_ENTRY_ACL_MASK 10005 /* Modify group access (POSIX.1e only) */
431 #define ARCHIVE_ENTRY_ACL_OTHER 10006 /* Public (POSIX.1e only) */
432 #define ARCHIVE_ENTRY_ACL_EVERYONE 10107 /* Everyone (NFS4 only) */
435 * Set the ACL by clearing it and adding entries one at a time.
436 * Unlike the POSIX.1e ACL routines, you must specify the type
437 * (access/default) for each entry. Internally, the ACL data is just
438 * a soup of entries. API calls here allow you to retrieve just the
439 * entries of interest. This design (which goes against the spirit of
440 * POSIX.1e) is useful for handling archive formats that combine
441 * default and access information in a single ACL list.
443 __LA_DECL void archive_entry_acl_clear(struct archive_entry *);
444 __LA_DECL int archive_entry_acl_add_entry(struct archive_entry *,
445 int /* type */, int /* permset */, int /* tag */,
446 int /* qual */, const char * /* name */);
447 __LA_DECL int archive_entry_acl_add_entry_w(struct archive_entry *,
448 int /* type */, int /* permset */, int /* tag */,
449 int /* qual */, const wchar_t * /* name */);
452 * To retrieve the ACL, first "reset", then repeatedly ask for the
453 * "next" entry. The want_type parameter allows you to request only
454 * certain types of entries.
456 __LA_DECL int archive_entry_acl_reset(struct archive_entry *, int /* want_type */);
457 __LA_DECL int archive_entry_acl_next(struct archive_entry *, int /* want_type */,
458 int * /* type */, int * /* permset */, int * /* tag */,
459 int * /* qual */, const char ** /* name */);
460 __LA_DECL int archive_entry_acl_next_w(struct archive_entry *, int /* want_type */,
461 int * /* type */, int * /* permset */, int * /* tag */,
462 int * /* qual */, const wchar_t ** /* name */);
465 * Construct a text-format ACL. The flags argument is a bitmask that
466 * can include any of the following:
468 * ARCHIVE_ENTRY_ACL_TYPE_ACCESS - Include POSIX.1e "access" entries.
469 * ARCHIVE_ENTRY_ACL_TYPE_DEFAULT - Include POSIX.1e "default" entries.
470 * ARCHIVE_ENTRY_ACL_TYPE_NFS4 - Include NFS4 entries.
471 * ARCHIVE_ENTRY_ACL_STYLE_EXTRA_ID - Include extra numeric ID field in
472 * each ACL entry. ('star' introduced this for POSIX.1e, this flag
473 * also applies to NFS4.)
474 * ARCHIVE_ENTRY_ACL_STYLE_MARK_DEFAULT - Include "default:" before each
475 * default ACL entry, as used in old Solaris ACLs.
477 #define ARCHIVE_ENTRY_ACL_STYLE_EXTRA_ID 1024
478 #define ARCHIVE_ENTRY_ACL_STYLE_MARK_DEFAULT 2048
479 __LA_DECL const wchar_t *archive_entry_acl_text_w(struct archive_entry *,
481 __LA_DECL const char *archive_entry_acl_text(struct archive_entry *,
484 /* Return a count of entries matching 'want_type' */
485 __LA_DECL int archive_entry_acl_count(struct archive_entry *, int /* want_type */);
487 /* Return an opaque ACL object. */
488 /* There's not yet anything clients can actually do with this... */
490 __LA_DECL struct archive_acl *archive_entry_acl(struct archive_entry *);
493 * extended attributes
496 __LA_DECL void archive_entry_xattr_clear(struct archive_entry *);
497 __LA_DECL void archive_entry_xattr_add_entry(struct archive_entry *,
498 const char * /* name */, const void * /* value */,
502 * To retrieve the xattr list, first "reset", then repeatedly ask for the
506 __LA_DECL int archive_entry_xattr_count(struct archive_entry *);
507 __LA_DECL int archive_entry_xattr_reset(struct archive_entry *);
508 __LA_DECL int archive_entry_xattr_next(struct archive_entry *,
509 const char ** /* name */, const void ** /* value */, size_t *);
515 __LA_DECL void archive_entry_sparse_clear(struct archive_entry *);
516 __LA_DECL void archive_entry_sparse_add_entry(struct archive_entry *,
517 __LA_INT64_T /* offset */, __LA_INT64_T /* length */);
520 * To retrieve the xattr list, first "reset", then repeatedly ask for the
524 __LA_DECL int archive_entry_sparse_count(struct archive_entry *);
525 __LA_DECL int archive_entry_sparse_reset(struct archive_entry *);
526 __LA_DECL int archive_entry_sparse_next(struct archive_entry *,
527 __LA_INT64_T * /* offset */, __LA_INT64_T * /* length */);
530 * Utility to match up hardlinks.
532 * The 'struct archive_entry_linkresolver' is a cache of archive entries
533 * for files with multiple links. Here's how to use it:
534 * 1. Create a lookup object with archive_entry_linkresolver_new()
535 * 2. Tell it the archive format you're using.
536 * 3. Hand each archive_entry to archive_entry_linkify().
537 * That function will return 0, 1, or 2 entries that should
539 * 4. Call archive_entry_linkify(resolver, NULL) until
540 * no more entries are returned.
541 * 5. Call archive_entry_linkresolver_free(resolver) to free resources.
543 * The entries returned have their hardlink and size fields updated
544 * appropriately. If an entry is passed in that does not refer to
545 * a file with multiple links, it is returned unchanged. The intention
546 * is that you should be able to simply filter all entries through
549 * To make things more efficient, be sure that each entry has a valid
550 * nlinks value. The hardlink cache uses this to track when all links
551 * have been found. If the nlinks value is zero, it will keep every
552 * name in the cache indefinitely, which can use a lot of memory.
554 * Note that archive_entry_size() is reset to zero if the file
555 * body should not be written to the archive. Pay attention!
557 struct archive_entry_linkresolver;
560 * There are three different strategies for marking hardlinks.
561 * The descriptions below name them after the best-known
562 * formats that rely on each strategy:
564 * "Old cpio" is the simplest, it always returns any entry unmodified.
565 * As far as I know, only cpio formats use this. Old cpio archives
566 * store every link with the full body; the onus is on the dearchiver
567 * to detect and properly link the files as they are restored.
568 * "tar" is also pretty simple; it caches a copy the first time it sees
569 * any link. Subsequent appearances are modified to be hardlink
570 * references to the first one without any body. Used by all tar
571 * formats, although the newest tar formats permit the "old cpio" strategy
572 * as well. This strategy is very simple for the dearchiver,
573 * and reasonably straightforward for the archiver.
574 * "new cpio" is trickier. It stores the body only with the last
575 * occurrence. The complication is that we might not
576 * see every link to a particular file in a single session, so
577 * there's no easy way to know when we've seen the last occurrence.
578 * The solution here is to queue one link until we see the next.
579 * At the end of the session, you can enumerate any remaining
580 * entries by calling archive_entry_linkify(NULL) and store those
581 * bodies. If you have a file with three links l1, l2, and l3,
582 * you'll get the following behavior if you see all three links:
583 * linkify(l1) => NULL (the resolver stores l1 internally)
584 * linkify(l2) => l1 (resolver stores l2, you write l1)
585 * linkify(l3) => l2, l3 (all links seen, you can write both).
586 * If you only see l1 and l2, you'll get this behavior:
587 * linkify(l1) => NULL
589 * linkify(NULL) => l2 (at end, you retrieve remaining links)
590 * As the name suggests, this strategy is used by newer cpio variants.
591 * It's noticeably more complex for the archiver, slightly more complex
592 * for the dearchiver than the tar strategy, but makes it straightforward
593 * to restore a file using any link by simply continuing to scan until
594 * you see a link that is stored with a body. In contrast, the tar
595 * strategy requires you to rescan the archive from the beginning to
596 * correctly extract an arbitrary link.
599 __LA_DECL struct archive_entry_linkresolver *archive_entry_linkresolver_new(void);
600 __LA_DECL void archive_entry_linkresolver_set_strategy(
601 struct archive_entry_linkresolver *, int /* format_code */);
602 __LA_DECL void archive_entry_linkresolver_free(struct archive_entry_linkresolver *);
603 __LA_DECL void archive_entry_linkify(struct archive_entry_linkresolver *,
604 struct archive_entry **, struct archive_entry **);
605 __LA_DECL struct archive_entry *archive_entry_partial_links(
606 struct archive_entry_linkresolver *res, unsigned int *links);
612 /* This is meaningless outside of this header. */
615 #endif /* !ARCHIVE_ENTRY_H_INCLUDED */