archive_entry.h 30 KB

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  1. /*-
  2. * Copyright (c) 2003-2008 Tim Kientzle
  3. * All rights reserved.
  4. *
  5. * Redistribution and use in source and binary forms, with or without
  6. * modification, are permitted provided that the following conditions
  7. * are met:
  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.
  13. *
  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.
  24. *
  25. * $FreeBSD: head/lib/libarchive/archive_entry.h 201096 2009-12-28 02:41:27Z kientzle $
  26. */
  27. #ifndef ARCHIVE_ENTRY_H_INCLUDED
  28. #define ARCHIVE_ENTRY_H_INCLUDED
  29. /* Note: Compiler will complain if this does not match archive.h! */
  30. #define ARCHIVE_VERSION_NUMBER 3002002
  31. /*
  32. * Note: archive_entry.h is for use outside of libarchive; the
  33. * configuration headers (config.h, archive_platform.h, etc.) are
  34. * purely internal. Do NOT use HAVE_XXX configuration macros to
  35. * control the behavior of this header! If you must conditionalize,
  36. * use predefined compiler and/or platform macros.
  37. */
  38. #include <sys/types.h>
  39. #include <stddef.h> /* for wchar_t */
  40. #include <time.h>
  41. #if defined(_WIN32) && !defined(__CYGWIN__)
  42. #include <windows.h>
  43. #endif
  44. /* Get a suitable 64-bit integer type. */
  45. #if !defined(__LA_INT64_T_DEFINED)
  46. # if ARCHIVE_VERSION_NUMBER < 4000000
  47. #define __LA_INT64_T la_int64_t
  48. # endif
  49. #define __LA_INT64_T_DEFINED
  50. # if defined(_WIN32) && !defined(__CYGWIN__) && !defined(__WATCOMC__)
  51. typedef __int64 la_int64_t;
  52. # else
  53. #include <unistd.h>
  54. # if defined(_SCO_DS) || defined(__osf__)
  55. typedef long long la_int64_t;
  56. # else
  57. typedef int64_t la_int64_t;
  58. # endif
  59. # endif
  60. #endif
  61. /* Get a suitable definition for mode_t */
  62. #if ARCHIVE_VERSION_NUMBER >= 3999000
  63. /* Switch to plain 'int' for libarchive 4.0. It's less broken than 'mode_t' */
  64. # define __LA_MODE_T int
  65. #elif defined(_WIN32) && !defined(__CYGWIN__) && !defined(__BORLANDC__) && !defined(__WATCOMC__)
  66. # define __LA_MODE_T unsigned short
  67. #else
  68. # define __LA_MODE_T mode_t
  69. #endif
  70. /* Large file support for Android */
  71. #ifdef __ANDROID__
  72. #include "android_lf.h"
  73. #endif
  74. /*
  75. * On Windows, define LIBARCHIVE_STATIC if you're building or using a
  76. * .lib. The default here assumes you're building a DLL. Only
  77. * libarchive source should ever define __LIBARCHIVE_BUILD.
  78. */
  79. #if ((defined __WIN32__) || (defined _WIN32) || defined(__CYGWIN__)) && (!defined LIBARCHIVE_STATIC)
  80. # ifdef __LIBARCHIVE_BUILD
  81. # ifdef __GNUC__
  82. # define __LA_DECL __attribute__((dllexport)) extern
  83. # else
  84. # define __LA_DECL __declspec(dllexport)
  85. # endif
  86. # else
  87. # ifdef __GNUC__
  88. # define __LA_DECL
  89. # else
  90. # define __LA_DECL __declspec(dllimport)
  91. # endif
  92. # endif
  93. #else
  94. /* Static libraries on all platforms and shared libraries on non-Windows. */
  95. # define __LA_DECL
  96. #endif
  97. #ifdef __cplusplus
  98. extern "C" {
  99. #endif
  100. /*
  101. * Description of an archive entry.
  102. *
  103. * You can think of this as "struct stat" with some text fields added in.
  104. *
  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.
  109. *
  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).
  115. */
  116. struct archive;
  117. struct archive_entry;
  118. /*
  119. * File-type constants. These are returned from archive_entry_filetype()
  120. * and passed to archive_entry_set_filetype().
  121. *
  122. * These values match S_XXX defines on every platform I've checked,
  123. * including Windows, AIX, Linux, Solaris, and BSD. They're
  124. * (re)defined here because platforms generally don't define the ones
  125. * they don't support. For example, Windows doesn't define S_IFLNK or
  126. * S_IFBLK. Instead of having a mass of conditional logic and system
  127. * checks to define any S_XXX values that aren't supported locally,
  128. * I've just defined a new set of such constants so that
  129. * libarchive-based applications can manipulate and identify archive
  130. * entries properly even if the hosting platform can't store them on
  131. * disk.
  132. *
  133. * These values are also used directly within some portable formats,
  134. * such as cpio. If you find a platform that varies from these, the
  135. * correct solution is to leave these alone and translate from these
  136. * portable values to platform-native values when entries are read from
  137. * or written to disk.
  138. */
  139. /*
  140. * In libarchive 4.0, we can drop the casts here.
  141. * They're needed to work around Borland C's broken mode_t.
  142. */
  143. #define AE_IFMT ((__LA_MODE_T)0170000)
  144. #define AE_IFREG ((__LA_MODE_T)0100000)
  145. #define AE_IFLNK ((__LA_MODE_T)0120000)
  146. #define AE_IFSOCK ((__LA_MODE_T)0140000)
  147. #define AE_IFCHR ((__LA_MODE_T)0020000)
  148. #define AE_IFBLK ((__LA_MODE_T)0060000)
  149. #define AE_IFDIR ((__LA_MODE_T)0040000)
  150. #define AE_IFIFO ((__LA_MODE_T)0010000)
  151. /*
  152. * Basic object manipulation
  153. */
  154. __LA_DECL struct archive_entry *archive_entry_clear(struct archive_entry *);
  155. /* The 'clone' function does a deep copy; all of the strings are copied too. */
  156. __LA_DECL struct archive_entry *archive_entry_clone(struct archive_entry *);
  157. __LA_DECL void archive_entry_free(struct archive_entry *);
  158. __LA_DECL struct archive_entry *archive_entry_new(void);
  159. /*
  160. * This form of archive_entry_new2() will pull character-set
  161. * conversion information from the specified archive handle. The
  162. * older archive_entry_new(void) form is equivalent to calling
  163. * archive_entry_new2(NULL) and will result in the use of an internal
  164. * default character-set conversion.
  165. */
  166. __LA_DECL struct archive_entry *archive_entry_new2(struct archive *);
  167. /*
  168. * Retrieve fields from an archive_entry.
  169. *
  170. * There are a number of implicit conversions among these fields. For
  171. * example, if a regular string field is set and you read the _w wide
  172. * character field, the entry will implicitly convert narrow-to-wide
  173. * using the current locale. Similarly, dev values are automatically
  174. * updated when you write devmajor or devminor and vice versa.
  175. *
  176. * In addition, fields can be "set" or "unset." Unset string fields
  177. * return NULL, non-string fields have _is_set() functions to test
  178. * whether they've been set. You can "unset" a string field by
  179. * assigning NULL; non-string fields have _unset() functions to
  180. * unset them.
  181. *
  182. * Note: There is one ambiguity in the above; string fields will
  183. * also return NULL when implicit character set conversions fail.
  184. * This is usually what you want.
  185. */
  186. __LA_DECL time_t archive_entry_atime(struct archive_entry *);
  187. __LA_DECL long archive_entry_atime_nsec(struct archive_entry *);
  188. __LA_DECL int archive_entry_atime_is_set(struct archive_entry *);
  189. __LA_DECL time_t archive_entry_birthtime(struct archive_entry *);
  190. __LA_DECL long archive_entry_birthtime_nsec(struct archive_entry *);
  191. __LA_DECL int archive_entry_birthtime_is_set(struct archive_entry *);
  192. __LA_DECL time_t archive_entry_ctime(struct archive_entry *);
  193. __LA_DECL long archive_entry_ctime_nsec(struct archive_entry *);
  194. __LA_DECL int archive_entry_ctime_is_set(struct archive_entry *);
  195. __LA_DECL dev_t archive_entry_dev(struct archive_entry *);
  196. __LA_DECL int archive_entry_dev_is_set(struct archive_entry *);
  197. __LA_DECL dev_t archive_entry_devmajor(struct archive_entry *);
  198. __LA_DECL dev_t archive_entry_devminor(struct archive_entry *);
  199. __LA_DECL __LA_MODE_T archive_entry_filetype(struct archive_entry *);
  200. __LA_DECL void archive_entry_fflags(struct archive_entry *,
  201. unsigned long * /* set */,
  202. unsigned long * /* clear */);
  203. __LA_DECL const char *archive_entry_fflags_text(struct archive_entry *);
  204. __LA_DECL la_int64_t archive_entry_gid(struct archive_entry *);
  205. __LA_DECL const char *archive_entry_gname(struct archive_entry *);
  206. __LA_DECL const char *archive_entry_gname_utf8(struct archive_entry *);
  207. __LA_DECL const wchar_t *archive_entry_gname_w(struct archive_entry *);
  208. __LA_DECL const char *archive_entry_hardlink(struct archive_entry *);
  209. __LA_DECL const char *archive_entry_hardlink_utf8(struct archive_entry *);
  210. __LA_DECL const wchar_t *archive_entry_hardlink_w(struct archive_entry *);
  211. __LA_DECL la_int64_t archive_entry_ino(struct archive_entry *);
  212. __LA_DECL la_int64_t archive_entry_ino64(struct archive_entry *);
  213. __LA_DECL int archive_entry_ino_is_set(struct archive_entry *);
  214. __LA_DECL __LA_MODE_T archive_entry_mode(struct archive_entry *);
  215. __LA_DECL time_t archive_entry_mtime(struct archive_entry *);
  216. __LA_DECL long archive_entry_mtime_nsec(struct archive_entry *);
  217. __LA_DECL int archive_entry_mtime_is_set(struct archive_entry *);
  218. __LA_DECL unsigned int archive_entry_nlink(struct archive_entry *);
  219. __LA_DECL const char *archive_entry_pathname(struct archive_entry *);
  220. __LA_DECL const char *archive_entry_pathname_utf8(struct archive_entry *);
  221. __LA_DECL const wchar_t *archive_entry_pathname_w(struct archive_entry *);
  222. __LA_DECL __LA_MODE_T archive_entry_perm(struct archive_entry *);
  223. __LA_DECL dev_t archive_entry_rdev(struct archive_entry *);
  224. __LA_DECL dev_t archive_entry_rdevmajor(struct archive_entry *);
  225. __LA_DECL dev_t archive_entry_rdevminor(struct archive_entry *);
  226. __LA_DECL const char *archive_entry_sourcepath(struct archive_entry *);
  227. __LA_DECL const wchar_t *archive_entry_sourcepath_w(struct archive_entry *);
  228. __LA_DECL la_int64_t archive_entry_size(struct archive_entry *);
  229. __LA_DECL int archive_entry_size_is_set(struct archive_entry *);
  230. __LA_DECL const char *archive_entry_strmode(struct archive_entry *);
  231. __LA_DECL const char *archive_entry_symlink(struct archive_entry *);
  232. __LA_DECL const char *archive_entry_symlink_utf8(struct archive_entry *);
  233. __LA_DECL const wchar_t *archive_entry_symlink_w(struct archive_entry *);
  234. __LA_DECL la_int64_t archive_entry_uid(struct archive_entry *);
  235. __LA_DECL const char *archive_entry_uname(struct archive_entry *);
  236. __LA_DECL const char *archive_entry_uname_utf8(struct archive_entry *);
  237. __LA_DECL const wchar_t *archive_entry_uname_w(struct archive_entry *);
  238. __LA_DECL int archive_entry_is_data_encrypted(struct archive_entry *);
  239. __LA_DECL int archive_entry_is_metadata_encrypted(struct archive_entry *);
  240. __LA_DECL int archive_entry_is_encrypted(struct archive_entry *);
  241. /*
  242. * Set fields in an archive_entry.
  243. *
  244. * Note: Before libarchive 2.4, there were 'set' and 'copy' versions
  245. * of the string setters. 'copy' copied the actual string, 'set' just
  246. * stored the pointer. In libarchive 2.4 and later, strings are
  247. * always copied.
  248. */
  249. __LA_DECL void archive_entry_set_atime(struct archive_entry *, time_t, long);
  250. __LA_DECL void archive_entry_unset_atime(struct archive_entry *);
  251. #if defined(_WIN32) && !defined(__CYGWIN__)
  252. __LA_DECL void archive_entry_copy_bhfi(struct archive_entry *, BY_HANDLE_FILE_INFORMATION *);
  253. #endif
  254. __LA_DECL void archive_entry_set_birthtime(struct archive_entry *, time_t, long);
  255. __LA_DECL void archive_entry_unset_birthtime(struct archive_entry *);
  256. __LA_DECL void archive_entry_set_ctime(struct archive_entry *, time_t, long);
  257. __LA_DECL void archive_entry_unset_ctime(struct archive_entry *);
  258. __LA_DECL void archive_entry_set_dev(struct archive_entry *, dev_t);
  259. __LA_DECL void archive_entry_set_devmajor(struct archive_entry *, dev_t);
  260. __LA_DECL void archive_entry_set_devminor(struct archive_entry *, dev_t);
  261. __LA_DECL void archive_entry_set_filetype(struct archive_entry *, unsigned int);
  262. __LA_DECL void archive_entry_set_fflags(struct archive_entry *,
  263. unsigned long /* set */, unsigned long /* clear */);
  264. /* Returns pointer to start of first invalid token, or NULL if none. */
  265. /* Note that all recognized tokens are processed, regardless. */
  266. __LA_DECL const char *archive_entry_copy_fflags_text(struct archive_entry *,
  267. const char *);
  268. __LA_DECL const wchar_t *archive_entry_copy_fflags_text_w(struct archive_entry *,
  269. const wchar_t *);
  270. __LA_DECL void archive_entry_set_gid(struct archive_entry *, la_int64_t);
  271. __LA_DECL void archive_entry_set_gname(struct archive_entry *, const char *);
  272. __LA_DECL void archive_entry_set_gname_utf8(struct archive_entry *, const char *);
  273. __LA_DECL void archive_entry_copy_gname(struct archive_entry *, const char *);
  274. __LA_DECL void archive_entry_copy_gname_w(struct archive_entry *, const wchar_t *);
  275. __LA_DECL int archive_entry_update_gname_utf8(struct archive_entry *, const char *);
  276. __LA_DECL void archive_entry_set_hardlink(struct archive_entry *, const char *);
  277. __LA_DECL void archive_entry_set_hardlink_utf8(struct archive_entry *, const char *);
  278. __LA_DECL void archive_entry_copy_hardlink(struct archive_entry *, const char *);
  279. __LA_DECL void archive_entry_copy_hardlink_w(struct archive_entry *, const wchar_t *);
  280. __LA_DECL int archive_entry_update_hardlink_utf8(struct archive_entry *, const char *);
  281. __LA_DECL void archive_entry_set_ino(struct archive_entry *, la_int64_t);
  282. __LA_DECL void archive_entry_set_ino64(struct archive_entry *, la_int64_t);
  283. __LA_DECL void archive_entry_set_link(struct archive_entry *, const char *);
  284. __LA_DECL void archive_entry_set_link_utf8(struct archive_entry *, const char *);
  285. __LA_DECL void archive_entry_copy_link(struct archive_entry *, const char *);
  286. __LA_DECL void archive_entry_copy_link_w(struct archive_entry *, const wchar_t *);
  287. __LA_DECL int archive_entry_update_link_utf8(struct archive_entry *, const char *);
  288. __LA_DECL void archive_entry_set_mode(struct archive_entry *, __LA_MODE_T);
  289. __LA_DECL void archive_entry_set_mtime(struct archive_entry *, time_t, long);
  290. __LA_DECL void archive_entry_unset_mtime(struct archive_entry *);
  291. __LA_DECL void archive_entry_set_nlink(struct archive_entry *, unsigned int);
  292. __LA_DECL void archive_entry_set_pathname(struct archive_entry *, const char *);
  293. __LA_DECL void archive_entry_set_pathname_utf8(struct archive_entry *, const char *);
  294. __LA_DECL void archive_entry_copy_pathname(struct archive_entry *, const char *);
  295. __LA_DECL void archive_entry_copy_pathname_w(struct archive_entry *, const wchar_t *);
  296. __LA_DECL int archive_entry_update_pathname_utf8(struct archive_entry *, const char *);
  297. __LA_DECL void archive_entry_set_perm(struct archive_entry *, __LA_MODE_T);
  298. __LA_DECL void archive_entry_set_rdev(struct archive_entry *, dev_t);
  299. __LA_DECL void archive_entry_set_rdevmajor(struct archive_entry *, dev_t);
  300. __LA_DECL void archive_entry_set_rdevminor(struct archive_entry *, dev_t);
  301. __LA_DECL void archive_entry_set_size(struct archive_entry *, la_int64_t);
  302. __LA_DECL void archive_entry_unset_size(struct archive_entry *);
  303. __LA_DECL void archive_entry_copy_sourcepath(struct archive_entry *, const char *);
  304. __LA_DECL void archive_entry_copy_sourcepath_w(struct archive_entry *, const wchar_t *);
  305. __LA_DECL void archive_entry_set_symlink(struct archive_entry *, const char *);
  306. __LA_DECL void archive_entry_set_symlink_utf8(struct archive_entry *, const char *);
  307. __LA_DECL void archive_entry_copy_symlink(struct archive_entry *, const char *);
  308. __LA_DECL void archive_entry_copy_symlink_w(struct archive_entry *, const wchar_t *);
  309. __LA_DECL int archive_entry_update_symlink_utf8(struct archive_entry *, const char *);
  310. __LA_DECL void archive_entry_set_uid(struct archive_entry *, la_int64_t);
  311. __LA_DECL void archive_entry_set_uname(struct archive_entry *, const char *);
  312. __LA_DECL void archive_entry_set_uname_utf8(struct archive_entry *, const char *);
  313. __LA_DECL void archive_entry_copy_uname(struct archive_entry *, const char *);
  314. __LA_DECL void archive_entry_copy_uname_w(struct archive_entry *, const wchar_t *);
  315. __LA_DECL int archive_entry_update_uname_utf8(struct archive_entry *, const char *);
  316. __LA_DECL void archive_entry_set_is_data_encrypted(struct archive_entry *, char is_encrypted);
  317. __LA_DECL void archive_entry_set_is_metadata_encrypted(struct archive_entry *, char is_encrypted);
  318. /*
  319. * Routines to bulk copy fields to/from a platform-native "struct
  320. * stat." Libarchive used to just store a struct stat inside of each
  321. * archive_entry object, but this created issues when trying to
  322. * manipulate archives on systems different than the ones they were
  323. * created on.
  324. *
  325. * TODO: On Linux and other LFS systems, provide both stat32 and
  326. * stat64 versions of these functions and all of the macro glue so
  327. * that archive_entry_stat is magically defined to
  328. * archive_entry_stat32 or archive_entry_stat64 as appropriate.
  329. */
  330. __LA_DECL const struct stat *archive_entry_stat(struct archive_entry *);
  331. __LA_DECL void archive_entry_copy_stat(struct archive_entry *, const struct stat *);
  332. /*
  333. * Storage for Mac OS-specific AppleDouble metadata information.
  334. * Apple-format tar files store a separate binary blob containing
  335. * encoded metadata with ACL, extended attributes, etc.
  336. * This provides a place to store that blob.
  337. */
  338. __LA_DECL const void * archive_entry_mac_metadata(struct archive_entry *, size_t *);
  339. __LA_DECL void archive_entry_copy_mac_metadata(struct archive_entry *, const void *, size_t);
  340. /*
  341. * ACL routines. This used to simply store and return text-format ACL
  342. * strings, but that proved insufficient for a number of reasons:
  343. * = clients need control over uname/uid and gname/gid mappings
  344. * = there are many different ACL text formats
  345. * = would like to be able to read/convert archives containing ACLs
  346. * on platforms that lack ACL libraries
  347. *
  348. * This last point, in particular, forces me to implement a reasonably
  349. * complete set of ACL support routines.
  350. */
  351. /*
  352. * Permission bits.
  353. */
  354. #define ARCHIVE_ENTRY_ACL_EXECUTE 0x00000001
  355. #define ARCHIVE_ENTRY_ACL_WRITE 0x00000002
  356. #define ARCHIVE_ENTRY_ACL_READ 0x00000004
  357. #define ARCHIVE_ENTRY_ACL_READ_DATA 0x00000008
  358. #define ARCHIVE_ENTRY_ACL_LIST_DIRECTORY 0x00000008
  359. #define ARCHIVE_ENTRY_ACL_WRITE_DATA 0x00000010
  360. #define ARCHIVE_ENTRY_ACL_ADD_FILE 0x00000010
  361. #define ARCHIVE_ENTRY_ACL_APPEND_DATA 0x00000020
  362. #define ARCHIVE_ENTRY_ACL_ADD_SUBDIRECTORY 0x00000020
  363. #define ARCHIVE_ENTRY_ACL_READ_NAMED_ATTRS 0x00000040
  364. #define ARCHIVE_ENTRY_ACL_WRITE_NAMED_ATTRS 0x00000080
  365. #define ARCHIVE_ENTRY_ACL_DELETE_CHILD 0x00000100
  366. #define ARCHIVE_ENTRY_ACL_READ_ATTRIBUTES 0x00000200
  367. #define ARCHIVE_ENTRY_ACL_WRITE_ATTRIBUTES 0x00000400
  368. #define ARCHIVE_ENTRY_ACL_DELETE 0x00000800
  369. #define ARCHIVE_ENTRY_ACL_READ_ACL 0x00001000
  370. #define ARCHIVE_ENTRY_ACL_WRITE_ACL 0x00002000
  371. #define ARCHIVE_ENTRY_ACL_WRITE_OWNER 0x00004000
  372. #define ARCHIVE_ENTRY_ACL_SYNCHRONIZE 0x00008000
  373. #define ARCHIVE_ENTRY_ACL_PERMS_POSIX1E \
  374. (ARCHIVE_ENTRY_ACL_EXECUTE \
  375. | ARCHIVE_ENTRY_ACL_WRITE \
  376. | ARCHIVE_ENTRY_ACL_READ)
  377. #define ARCHIVE_ENTRY_ACL_PERMS_NFS4 \
  378. (ARCHIVE_ENTRY_ACL_EXECUTE \
  379. | ARCHIVE_ENTRY_ACL_READ_DATA \
  380. | ARCHIVE_ENTRY_ACL_LIST_DIRECTORY \
  381. | ARCHIVE_ENTRY_ACL_WRITE_DATA \
  382. | ARCHIVE_ENTRY_ACL_ADD_FILE \
  383. | ARCHIVE_ENTRY_ACL_APPEND_DATA \
  384. | ARCHIVE_ENTRY_ACL_ADD_SUBDIRECTORY \
  385. | ARCHIVE_ENTRY_ACL_READ_NAMED_ATTRS \
  386. | ARCHIVE_ENTRY_ACL_WRITE_NAMED_ATTRS \
  387. | ARCHIVE_ENTRY_ACL_DELETE_CHILD \
  388. | ARCHIVE_ENTRY_ACL_READ_ATTRIBUTES \
  389. | ARCHIVE_ENTRY_ACL_WRITE_ATTRIBUTES \
  390. | ARCHIVE_ENTRY_ACL_DELETE \
  391. | ARCHIVE_ENTRY_ACL_READ_ACL \
  392. | ARCHIVE_ENTRY_ACL_WRITE_ACL \
  393. | ARCHIVE_ENTRY_ACL_WRITE_OWNER \
  394. | ARCHIVE_ENTRY_ACL_SYNCHRONIZE)
  395. /*
  396. * Inheritance values (NFS4 ACLs only); included in permset.
  397. */
  398. #define ARCHIVE_ENTRY_ACL_ENTRY_FILE_INHERIT 0x02000000
  399. #define ARCHIVE_ENTRY_ACL_ENTRY_DIRECTORY_INHERIT 0x04000000
  400. #define ARCHIVE_ENTRY_ACL_ENTRY_NO_PROPAGATE_INHERIT 0x08000000
  401. #define ARCHIVE_ENTRY_ACL_ENTRY_INHERIT_ONLY 0x10000000
  402. #define ARCHIVE_ENTRY_ACL_ENTRY_SUCCESSFUL_ACCESS 0x20000000
  403. #define ARCHIVE_ENTRY_ACL_ENTRY_FAILED_ACCESS 0x40000000
  404. #define ARCHIVE_ENTRY_ACL_INHERITANCE_NFS4 \
  405. (ARCHIVE_ENTRY_ACL_ENTRY_FILE_INHERIT \
  406. | ARCHIVE_ENTRY_ACL_ENTRY_DIRECTORY_INHERIT \
  407. | ARCHIVE_ENTRY_ACL_ENTRY_NO_PROPAGATE_INHERIT \
  408. | ARCHIVE_ENTRY_ACL_ENTRY_INHERIT_ONLY \
  409. | ARCHIVE_ENTRY_ACL_ENTRY_SUCCESSFUL_ACCESS \
  410. | 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)
  424. /* Tag values mimic POSIX.1e */
  425. #define ARCHIVE_ENTRY_ACL_USER 10001 /* Specified user. */
  426. #define ARCHIVE_ENTRY_ACL_USER_OBJ 10002 /* User who owns the file. */
  427. #define ARCHIVE_ENTRY_ACL_GROUP 10003 /* Specified group. */
  428. #define ARCHIVE_ENTRY_ACL_GROUP_OBJ 10004 /* Group who owns the file. */
  429. #define ARCHIVE_ENTRY_ACL_MASK 10005 /* Modify group access (POSIX.1e only) */
  430. #define ARCHIVE_ENTRY_ACL_OTHER 10006 /* Public (POSIX.1e only) */
  431. #define ARCHIVE_ENTRY_ACL_EVERYONE 10107 /* Everyone (NFS4 only) */
  432. /*
  433. * Set the ACL by clearing it and adding entries one at a time.
  434. * Unlike the POSIX.1e ACL routines, you must specify the type
  435. * (access/default) for each entry. Internally, the ACL data is just
  436. * a soup of entries. API calls here allow you to retrieve just the
  437. * entries of interest. This design (which goes against the spirit of
  438. * POSIX.1e) is useful for handling archive formats that combine
  439. * default and access information in a single ACL list.
  440. */
  441. __LA_DECL void archive_entry_acl_clear(struct archive_entry *);
  442. __LA_DECL int archive_entry_acl_add_entry(struct archive_entry *,
  443. int /* type */, int /* permset */, int /* tag */,
  444. int /* qual */, const char * /* name */);
  445. __LA_DECL int archive_entry_acl_add_entry_w(struct archive_entry *,
  446. int /* type */, int /* permset */, int /* tag */,
  447. int /* qual */, const wchar_t * /* name */);
  448. /*
  449. * To retrieve the ACL, first "reset", then repeatedly ask for the
  450. * "next" entry. The want_type parameter allows you to request only
  451. * certain types of entries.
  452. */
  453. __LA_DECL int archive_entry_acl_reset(struct archive_entry *, int /* want_type */);
  454. __LA_DECL int archive_entry_acl_next(struct archive_entry *, int /* want_type */,
  455. int * /* type */, int * /* permset */, int * /* tag */,
  456. int * /* qual */, const char ** /* name */);
  457. __LA_DECL int archive_entry_acl_next_w(struct archive_entry *, int /* want_type */,
  458. int * /* type */, int * /* permset */, int * /* tag */,
  459. int * /* qual */, const wchar_t ** /* name */);
  460. /*
  461. * Construct a text-format ACL. The flags argument is a bitmask that
  462. * can include any of the following:
  463. *
  464. * ARCHIVE_ENTRY_ACL_TYPE_ACCESS - Include POSIX.1e "access" entries.
  465. * ARCHIVE_ENTRY_ACL_TYPE_DEFAULT - Include POSIX.1e "default" entries.
  466. * ARCHIVE_ENTRY_ACL_TYPE_NFS4 - Include NFS4 entries.
  467. * ARCHIVE_ENTRY_ACL_STYLE_EXTRA_ID - Include extra numeric ID field in
  468. * each ACL entry. ('star' introduced this for POSIX.1e, this flag
  469. * also applies to NFS4.)
  470. * ARCHIVE_ENTRY_ACL_STYLE_MARK_DEFAULT - Include "default:" before each
  471. * default ACL entry, as used in old Solaris ACLs.
  472. */
  473. #define ARCHIVE_ENTRY_ACL_STYLE_EXTRA_ID 1024
  474. #define ARCHIVE_ENTRY_ACL_STYLE_MARK_DEFAULT 2048
  475. __LA_DECL const wchar_t *archive_entry_acl_text_w(struct archive_entry *,
  476. int /* flags */);
  477. __LA_DECL const char *archive_entry_acl_text(struct archive_entry *,
  478. int /* flags */);
  479. /* Return a count of entries matching 'want_type' */
  480. __LA_DECL int archive_entry_acl_count(struct archive_entry *, int /* want_type */);
  481. /* Return an opaque ACL object. */
  482. /* There's not yet anything clients can actually do with this... */
  483. struct archive_acl;
  484. __LA_DECL struct archive_acl *archive_entry_acl(struct archive_entry *);
  485. /*
  486. * extended attributes
  487. */
  488. __LA_DECL void archive_entry_xattr_clear(struct archive_entry *);
  489. __LA_DECL void archive_entry_xattr_add_entry(struct archive_entry *,
  490. const char * /* name */, const void * /* value */,
  491. size_t /* size */);
  492. /*
  493. * To retrieve the xattr list, first "reset", then repeatedly ask for the
  494. * "next" entry.
  495. */
  496. __LA_DECL int archive_entry_xattr_count(struct archive_entry *);
  497. __LA_DECL int archive_entry_xattr_reset(struct archive_entry *);
  498. __LA_DECL int archive_entry_xattr_next(struct archive_entry *,
  499. const char ** /* name */, const void ** /* value */, size_t *);
  500. /*
  501. * sparse
  502. */
  503. __LA_DECL void archive_entry_sparse_clear(struct archive_entry *);
  504. __LA_DECL void archive_entry_sparse_add_entry(struct archive_entry *,
  505. la_int64_t /* offset */, la_int64_t /* length */);
  506. /*
  507. * To retrieve the xattr list, first "reset", then repeatedly ask for the
  508. * "next" entry.
  509. */
  510. __LA_DECL int archive_entry_sparse_count(struct archive_entry *);
  511. __LA_DECL int archive_entry_sparse_reset(struct archive_entry *);
  512. __LA_DECL int archive_entry_sparse_next(struct archive_entry *,
  513. la_int64_t * /* offset */, la_int64_t * /* length */);
  514. /*
  515. * Utility to match up hardlinks.
  516. *
  517. * The 'struct archive_entry_linkresolver' is a cache of archive entries
  518. * for files with multiple links. Here's how to use it:
  519. * 1. Create a lookup object with archive_entry_linkresolver_new()
  520. * 2. Tell it the archive format you're using.
  521. * 3. Hand each archive_entry to archive_entry_linkify().
  522. * That function will return 0, 1, or 2 entries that should
  523. * be written.
  524. * 4. Call archive_entry_linkify(resolver, NULL) until
  525. * no more entries are returned.
  526. * 5. Call archive_entry_linkresolver_free(resolver) to free resources.
  527. *
  528. * The entries returned have their hardlink and size fields updated
  529. * appropriately. If an entry is passed in that does not refer to
  530. * a file with multiple links, it is returned unchanged. The intention
  531. * is that you should be able to simply filter all entries through
  532. * this machine.
  533. *
  534. * To make things more efficient, be sure that each entry has a valid
  535. * nlinks value. The hardlink cache uses this to track when all links
  536. * have been found. If the nlinks value is zero, it will keep every
  537. * name in the cache indefinitely, which can use a lot of memory.
  538. *
  539. * Note that archive_entry_size() is reset to zero if the file
  540. * body should not be written to the archive. Pay attention!
  541. */
  542. struct archive_entry_linkresolver;
  543. /*
  544. * There are three different strategies for marking hardlinks.
  545. * The descriptions below name them after the best-known
  546. * formats that rely on each strategy:
  547. *
  548. * "Old cpio" is the simplest, it always returns any entry unmodified.
  549. * As far as I know, only cpio formats use this. Old cpio archives
  550. * store every link with the full body; the onus is on the dearchiver
  551. * to detect and properly link the files as they are restored.
  552. * "tar" is also pretty simple; it caches a copy the first time it sees
  553. * any link. Subsequent appearances are modified to be hardlink
  554. * references to the first one without any body. Used by all tar
  555. * formats, although the newest tar formats permit the "old cpio" strategy
  556. * as well. This strategy is very simple for the dearchiver,
  557. * and reasonably straightforward for the archiver.
  558. * "new cpio" is trickier. It stores the body only with the last
  559. * occurrence. The complication is that we might not
  560. * see every link to a particular file in a single session, so
  561. * there's no easy way to know when we've seen the last occurrence.
  562. * The solution here is to queue one link until we see the next.
  563. * At the end of the session, you can enumerate any remaining
  564. * entries by calling archive_entry_linkify(NULL) and store those
  565. * bodies. If you have a file with three links l1, l2, and l3,
  566. * you'll get the following behavior if you see all three links:
  567. * linkify(l1) => NULL (the resolver stores l1 internally)
  568. * linkify(l2) => l1 (resolver stores l2, you write l1)
  569. * linkify(l3) => l2, l3 (all links seen, you can write both).
  570. * If you only see l1 and l2, you'll get this behavior:
  571. * linkify(l1) => NULL
  572. * linkify(l2) => l1
  573. * linkify(NULL) => l2 (at end, you retrieve remaining links)
  574. * As the name suggests, this strategy is used by newer cpio variants.
  575. * It's noticeably more complex for the archiver, slightly more complex
  576. * for the dearchiver than the tar strategy, but makes it straightforward
  577. * to restore a file using any link by simply continuing to scan until
  578. * you see a link that is stored with a body. In contrast, the tar
  579. * strategy requires you to rescan the archive from the beginning to
  580. * correctly extract an arbitrary link.
  581. */
  582. __LA_DECL struct archive_entry_linkresolver *archive_entry_linkresolver_new(void);
  583. __LA_DECL void archive_entry_linkresolver_set_strategy(
  584. struct archive_entry_linkresolver *, int /* format_code */);
  585. __LA_DECL void archive_entry_linkresolver_free(struct archive_entry_linkresolver *);
  586. __LA_DECL void archive_entry_linkify(struct archive_entry_linkresolver *,
  587. struct archive_entry **, struct archive_entry **);
  588. __LA_DECL struct archive_entry *archive_entry_partial_links(
  589. struct archive_entry_linkresolver *res, unsigned int *links);
  590. #ifdef __cplusplus
  591. }
  592. #endif
  593. /* This is meaningless outside of this header. */
  594. #undef __LA_DECL
  595. #endif /* !ARCHIVE_ENTRY_H_INCLUDED */