archive_entry.h 33 KB

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  1. /*-
  2. * Copyright (c) 2003-2008 Tim Kientzle
  3. * Copyright (c) 2016 Martin Matuska
  4. * All rights reserved.
  5. *
  6. * Redistribution and use in source and binary forms, with or without
  7. * modification, are permitted provided that the following conditions
  8. * are met:
  9. * 1. Redistributions of source code must retain the above copyright
  10. * notice, this list of conditions and the following disclaimer.
  11. * 2. Redistributions in binary form must reproduce the above copyright
  12. * notice, this list of conditions and the following disclaimer in the
  13. * documentation and/or other materials provided with the distribution.
  14. *
  15. * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
  16. * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  17. * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  18. * IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
  19. * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  20. * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  21. * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  22. * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  23. * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  24. * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  25. *
  26. * $FreeBSD: head/lib/libarchive/archive_entry.h 201096 2009-12-28 02:41:27Z kientzle $
  27. */
  28. #ifndef ARCHIVE_ENTRY_H_INCLUDED
  29. #define ARCHIVE_ENTRY_H_INCLUDED
  30. /* Note: Compiler will complain if this does not match archive.h! */
  31. #define ARCHIVE_VERSION_NUMBER 3006002
  32. /*
  33. * Note: archive_entry.h is for use outside of libarchive; the
  34. * configuration headers (config.h, archive_platform.h, etc.) are
  35. * purely internal. Do NOT use HAVE_XXX configuration macros to
  36. * control the behavior of this header! If you must conditionalize,
  37. * use predefined compiler and/or platform macros.
  38. */
  39. #include <sys/types.h>
  40. #include <stddef.h> /* for wchar_t */
  41. #include <stdint.h>
  42. #include <time.h>
  43. #if defined(_WIN32) && !defined(__CYGWIN__)
  44. #include <windows.h>
  45. #endif
  46. /* Get a suitable 64-bit integer type. */
  47. #if !defined(__LA_INT64_T_DEFINED)
  48. # if ARCHIVE_VERSION_NUMBER < 4000000
  49. #define __LA_INT64_T la_int64_t
  50. # endif
  51. #define __LA_INT64_T_DEFINED
  52. # if defined(_WIN32) && !defined(__CYGWIN__) && !defined(__WATCOMC__)
  53. typedef __int64 la_int64_t;
  54. # else
  55. #include <unistd.h>
  56. # if defined(_SCO_DS) || defined(__osf__)
  57. typedef long long la_int64_t;
  58. # else
  59. typedef int64_t la_int64_t;
  60. # endif
  61. # endif
  62. #endif
  63. /* The la_ssize_t should match the type used in 'struct stat' */
  64. #if !defined(__LA_SSIZE_T_DEFINED)
  65. /* Older code relied on the __LA_SSIZE_T macro; after 4.0 we'll switch to the typedef exclusively. */
  66. # if ARCHIVE_VERSION_NUMBER < 4000000
  67. #define __LA_SSIZE_T la_ssize_t
  68. # endif
  69. #define __LA_SSIZE_T_DEFINED
  70. # if defined(_WIN32) && !defined(__CYGWIN__) && !defined(__WATCOMC__)
  71. # if defined(_SSIZE_T_DEFINED) || defined(_SSIZE_T_)
  72. typedef ssize_t la_ssize_t;
  73. # elif defined(_WIN64)
  74. typedef __int64 la_ssize_t;
  75. # else
  76. typedef long la_ssize_t;
  77. # endif
  78. # else
  79. # include <unistd.h> /* ssize_t */
  80. typedef ssize_t la_ssize_t;
  81. # endif
  82. #endif
  83. /* Get a suitable definition for mode_t */
  84. #if ARCHIVE_VERSION_NUMBER >= 3999000
  85. /* Switch to plain 'int' for libarchive 4.0. It's less broken than 'mode_t' */
  86. # define __LA_MODE_T int
  87. #elif defined(_WIN32) && !defined(__CYGWIN__) && !defined(__BORLANDC__) && !defined(__WATCOMC__)
  88. # define __LA_MODE_T unsigned short
  89. #else
  90. # define __LA_MODE_T mode_t
  91. #endif
  92. /* Large file support for Android */
  93. #if defined(__LIBARCHIVE_BUILD) && defined(__ANDROID__)
  94. #include "android_lf.h"
  95. #endif
  96. /*
  97. * On Windows, define LIBARCHIVE_STATIC if you're building or using a
  98. * .lib. The default here assumes you're building a DLL. Only
  99. * libarchive source should ever define __LIBARCHIVE_BUILD.
  100. */
  101. #if ((defined __WIN32__) || (defined _WIN32) || defined(__CYGWIN__)) && (!defined LIBARCHIVE_STATIC)
  102. # ifdef __LIBARCHIVE_BUILD
  103. # ifdef __GNUC__
  104. # define __LA_DECL __attribute__((dllexport)) extern
  105. # else
  106. # define __LA_DECL __declspec(dllexport)
  107. # endif
  108. # else
  109. # ifdef __GNUC__
  110. # define __LA_DECL
  111. # else
  112. # define __LA_DECL __declspec(dllimport)
  113. # endif
  114. # endif
  115. #elif defined __LIBARCHIVE_ENABLE_VISIBILITY
  116. # define __LA_DECL __attribute__((visibility("default")))
  117. #else
  118. /* Static libraries on all platforms and shared libraries on non-Windows. */
  119. # define __LA_DECL
  120. #endif
  121. #if defined(__GNUC__) && __GNUC__ >= 3 && __GNUC_MINOR__ >= 1
  122. # define __LA_DEPRECATED __attribute__((deprecated))
  123. #else
  124. # define __LA_DEPRECATED
  125. #endif
  126. #ifdef __cplusplus
  127. extern "C" {
  128. #endif
  129. /*
  130. * Description of an archive entry.
  131. *
  132. * You can think of this as "struct stat" with some text fields added in.
  133. *
  134. * TODO: Add "comment", "charset", and possibly other entries that are
  135. * supported by "pax interchange" format. However, GNU, ustar, cpio,
  136. * and other variants don't support these features, so they're not an
  137. * excruciatingly high priority right now.
  138. *
  139. * TODO: "pax interchange" format allows essentially arbitrary
  140. * key/value attributes to be attached to any entry. Supporting
  141. * such extensions may make this library useful for special
  142. * applications (e.g., a package manager could attach special
  143. * package-management attributes to each entry).
  144. */
  145. struct archive;
  146. struct archive_entry;
  147. /*
  148. * File-type constants. These are returned from archive_entry_filetype()
  149. * and passed to archive_entry_set_filetype().
  150. *
  151. * These values match S_XXX defines on every platform I've checked,
  152. * including Windows, AIX, Linux, Solaris, and BSD. They're
  153. * (re)defined here because platforms generally don't define the ones
  154. * they don't support. For example, Windows doesn't define S_IFLNK or
  155. * S_IFBLK. Instead of having a mass of conditional logic and system
  156. * checks to define any S_XXX values that aren't supported locally,
  157. * I've just defined a new set of such constants so that
  158. * libarchive-based applications can manipulate and identify archive
  159. * entries properly even if the hosting platform can't store them on
  160. * disk.
  161. *
  162. * These values are also used directly within some portable formats,
  163. * such as cpio. If you find a platform that varies from these, the
  164. * correct solution is to leave these alone and translate from these
  165. * portable values to platform-native values when entries are read from
  166. * or written to disk.
  167. */
  168. /*
  169. * In libarchive 4.0, we can drop the casts here.
  170. * They're needed to work around Borland C's broken mode_t.
  171. */
  172. #define AE_IFMT ((__LA_MODE_T)0170000)
  173. #define AE_IFREG ((__LA_MODE_T)0100000)
  174. #define AE_IFLNK ((__LA_MODE_T)0120000)
  175. #define AE_IFSOCK ((__LA_MODE_T)0140000)
  176. #define AE_IFCHR ((__LA_MODE_T)0020000)
  177. #define AE_IFBLK ((__LA_MODE_T)0060000)
  178. #define AE_IFDIR ((__LA_MODE_T)0040000)
  179. #define AE_IFIFO ((__LA_MODE_T)0010000)
  180. /*
  181. * Symlink types
  182. */
  183. #define AE_SYMLINK_TYPE_UNDEFINED 0
  184. #define AE_SYMLINK_TYPE_FILE 1
  185. #define AE_SYMLINK_TYPE_DIRECTORY 2
  186. /*
  187. * Basic object manipulation
  188. */
  189. __LA_DECL struct archive_entry *archive_entry_clear(struct archive_entry *);
  190. /* The 'clone' function does a deep copy; all of the strings are copied too. */
  191. __LA_DECL struct archive_entry *archive_entry_clone(struct archive_entry *);
  192. __LA_DECL void archive_entry_free(struct archive_entry *);
  193. __LA_DECL struct archive_entry *archive_entry_new(void);
  194. /*
  195. * This form of archive_entry_new2() will pull character-set
  196. * conversion information from the specified archive handle. The
  197. * older archive_entry_new(void) form is equivalent to calling
  198. * archive_entry_new2(NULL) and will result in the use of an internal
  199. * default character-set conversion.
  200. */
  201. __LA_DECL struct archive_entry *archive_entry_new2(struct archive *);
  202. /*
  203. * Retrieve fields from an archive_entry.
  204. *
  205. * There are a number of implicit conversions among these fields. For
  206. * example, if a regular string field is set and you read the _w wide
  207. * character field, the entry will implicitly convert narrow-to-wide
  208. * using the current locale. Similarly, dev values are automatically
  209. * updated when you write devmajor or devminor and vice versa.
  210. *
  211. * In addition, fields can be "set" or "unset." Unset string fields
  212. * return NULL, non-string fields have _is_set() functions to test
  213. * whether they've been set. You can "unset" a string field by
  214. * assigning NULL; non-string fields have _unset() functions to
  215. * unset them.
  216. *
  217. * Note: There is one ambiguity in the above; string fields will
  218. * also return NULL when implicit character set conversions fail.
  219. * This is usually what you want.
  220. */
  221. __LA_DECL time_t archive_entry_atime(struct archive_entry *);
  222. __LA_DECL long archive_entry_atime_nsec(struct archive_entry *);
  223. __LA_DECL int archive_entry_atime_is_set(struct archive_entry *);
  224. __LA_DECL time_t archive_entry_birthtime(struct archive_entry *);
  225. __LA_DECL long archive_entry_birthtime_nsec(struct archive_entry *);
  226. __LA_DECL int archive_entry_birthtime_is_set(struct archive_entry *);
  227. __LA_DECL time_t archive_entry_ctime(struct archive_entry *);
  228. __LA_DECL long archive_entry_ctime_nsec(struct archive_entry *);
  229. __LA_DECL int archive_entry_ctime_is_set(struct archive_entry *);
  230. __LA_DECL dev_t archive_entry_dev(struct archive_entry *);
  231. __LA_DECL int archive_entry_dev_is_set(struct archive_entry *);
  232. __LA_DECL dev_t archive_entry_devmajor(struct archive_entry *);
  233. __LA_DECL dev_t archive_entry_devminor(struct archive_entry *);
  234. __LA_DECL __LA_MODE_T archive_entry_filetype(struct archive_entry *);
  235. __LA_DECL void archive_entry_fflags(struct archive_entry *,
  236. unsigned long * /* set */,
  237. unsigned long * /* clear */);
  238. __LA_DECL const char *archive_entry_fflags_text(struct archive_entry *);
  239. __LA_DECL la_int64_t archive_entry_gid(struct archive_entry *);
  240. __LA_DECL const char *archive_entry_gname(struct archive_entry *);
  241. __LA_DECL const char *archive_entry_gname_utf8(struct archive_entry *);
  242. __LA_DECL const wchar_t *archive_entry_gname_w(struct archive_entry *);
  243. __LA_DECL const char *archive_entry_hardlink(struct archive_entry *);
  244. __LA_DECL const char *archive_entry_hardlink_utf8(struct archive_entry *);
  245. __LA_DECL const wchar_t *archive_entry_hardlink_w(struct archive_entry *);
  246. __LA_DECL la_int64_t archive_entry_ino(struct archive_entry *);
  247. __LA_DECL la_int64_t archive_entry_ino64(struct archive_entry *);
  248. __LA_DECL int archive_entry_ino_is_set(struct archive_entry *);
  249. __LA_DECL __LA_MODE_T archive_entry_mode(struct archive_entry *);
  250. __LA_DECL time_t archive_entry_mtime(struct archive_entry *);
  251. __LA_DECL long archive_entry_mtime_nsec(struct archive_entry *);
  252. __LA_DECL int archive_entry_mtime_is_set(struct archive_entry *);
  253. __LA_DECL unsigned int archive_entry_nlink(struct archive_entry *);
  254. __LA_DECL const char *archive_entry_pathname(struct archive_entry *);
  255. __LA_DECL const char *archive_entry_pathname_utf8(struct archive_entry *);
  256. __LA_DECL const wchar_t *archive_entry_pathname_w(struct archive_entry *);
  257. __LA_DECL __LA_MODE_T archive_entry_perm(struct archive_entry *);
  258. __LA_DECL dev_t archive_entry_rdev(struct archive_entry *);
  259. __LA_DECL dev_t archive_entry_rdevmajor(struct archive_entry *);
  260. __LA_DECL dev_t archive_entry_rdevminor(struct archive_entry *);
  261. __LA_DECL const char *archive_entry_sourcepath(struct archive_entry *);
  262. __LA_DECL const wchar_t *archive_entry_sourcepath_w(struct archive_entry *);
  263. __LA_DECL la_int64_t archive_entry_size(struct archive_entry *);
  264. __LA_DECL int archive_entry_size_is_set(struct archive_entry *);
  265. __LA_DECL const char *archive_entry_strmode(struct archive_entry *);
  266. __LA_DECL const char *archive_entry_symlink(struct archive_entry *);
  267. __LA_DECL const char *archive_entry_symlink_utf8(struct archive_entry *);
  268. __LA_DECL int archive_entry_symlink_type(struct archive_entry *);
  269. __LA_DECL const wchar_t *archive_entry_symlink_w(struct archive_entry *);
  270. __LA_DECL la_int64_t archive_entry_uid(struct archive_entry *);
  271. __LA_DECL const char *archive_entry_uname(struct archive_entry *);
  272. __LA_DECL const char *archive_entry_uname_utf8(struct archive_entry *);
  273. __LA_DECL const wchar_t *archive_entry_uname_w(struct archive_entry *);
  274. __LA_DECL int archive_entry_is_data_encrypted(struct archive_entry *);
  275. __LA_DECL int archive_entry_is_metadata_encrypted(struct archive_entry *);
  276. __LA_DECL int archive_entry_is_encrypted(struct archive_entry *);
  277. /*
  278. * Set fields in an archive_entry.
  279. *
  280. * Note: Before libarchive 2.4, there were 'set' and 'copy' versions
  281. * of the string setters. 'copy' copied the actual string, 'set' just
  282. * stored the pointer. In libarchive 2.4 and later, strings are
  283. * always copied.
  284. */
  285. __LA_DECL void archive_entry_set_atime(struct archive_entry *, time_t, long);
  286. __LA_DECL void archive_entry_unset_atime(struct archive_entry *);
  287. #if defined(_WIN32) && !defined(__CYGWIN__)
  288. __LA_DECL void archive_entry_copy_bhfi(struct archive_entry *, BY_HANDLE_FILE_INFORMATION *);
  289. #endif
  290. __LA_DECL void archive_entry_set_birthtime(struct archive_entry *, time_t, long);
  291. __LA_DECL void archive_entry_unset_birthtime(struct archive_entry *);
  292. __LA_DECL void archive_entry_set_ctime(struct archive_entry *, time_t, long);
  293. __LA_DECL void archive_entry_unset_ctime(struct archive_entry *);
  294. __LA_DECL void archive_entry_set_dev(struct archive_entry *, dev_t);
  295. __LA_DECL void archive_entry_set_devmajor(struct archive_entry *, dev_t);
  296. __LA_DECL void archive_entry_set_devminor(struct archive_entry *, dev_t);
  297. __LA_DECL void archive_entry_set_filetype(struct archive_entry *, unsigned int);
  298. __LA_DECL void archive_entry_set_fflags(struct archive_entry *,
  299. unsigned long /* set */, unsigned long /* clear */);
  300. /* Returns pointer to start of first invalid token, or NULL if none. */
  301. /* Note that all recognized tokens are processed, regardless. */
  302. __LA_DECL const char *archive_entry_copy_fflags_text(struct archive_entry *,
  303. const char *);
  304. __LA_DECL const wchar_t *archive_entry_copy_fflags_text_w(struct archive_entry *,
  305. const wchar_t *);
  306. __LA_DECL void archive_entry_set_gid(struct archive_entry *, la_int64_t);
  307. __LA_DECL void archive_entry_set_gname(struct archive_entry *, const char *);
  308. __LA_DECL void archive_entry_set_gname_utf8(struct archive_entry *, const char *);
  309. __LA_DECL void archive_entry_copy_gname(struct archive_entry *, const char *);
  310. __LA_DECL void archive_entry_copy_gname_w(struct archive_entry *, const wchar_t *);
  311. __LA_DECL int archive_entry_update_gname_utf8(struct archive_entry *, const char *);
  312. __LA_DECL void archive_entry_set_hardlink(struct archive_entry *, const char *);
  313. __LA_DECL void archive_entry_set_hardlink_utf8(struct archive_entry *, const char *);
  314. __LA_DECL void archive_entry_copy_hardlink(struct archive_entry *, const char *);
  315. __LA_DECL void archive_entry_copy_hardlink_w(struct archive_entry *, const wchar_t *);
  316. __LA_DECL int archive_entry_update_hardlink_utf8(struct archive_entry *, const char *);
  317. __LA_DECL void archive_entry_set_ino(struct archive_entry *, la_int64_t);
  318. __LA_DECL void archive_entry_set_ino64(struct archive_entry *, la_int64_t);
  319. __LA_DECL void archive_entry_set_link(struct archive_entry *, const char *);
  320. __LA_DECL void archive_entry_set_link_utf8(struct archive_entry *, const char *);
  321. __LA_DECL void archive_entry_copy_link(struct archive_entry *, const char *);
  322. __LA_DECL void archive_entry_copy_link_w(struct archive_entry *, const wchar_t *);
  323. __LA_DECL int archive_entry_update_link_utf8(struct archive_entry *, const char *);
  324. __LA_DECL void archive_entry_set_mode(struct archive_entry *, __LA_MODE_T);
  325. __LA_DECL void archive_entry_set_mtime(struct archive_entry *, time_t, long);
  326. __LA_DECL void archive_entry_unset_mtime(struct archive_entry *);
  327. __LA_DECL void archive_entry_set_nlink(struct archive_entry *, unsigned int);
  328. __LA_DECL void archive_entry_set_pathname(struct archive_entry *, const char *);
  329. __LA_DECL void archive_entry_set_pathname_utf8(struct archive_entry *, const char *);
  330. __LA_DECL void archive_entry_copy_pathname(struct archive_entry *, const char *);
  331. __LA_DECL void archive_entry_copy_pathname_w(struct archive_entry *, const wchar_t *);
  332. __LA_DECL int archive_entry_update_pathname_utf8(struct archive_entry *, const char *);
  333. __LA_DECL void archive_entry_set_perm(struct archive_entry *, __LA_MODE_T);
  334. __LA_DECL void archive_entry_set_rdev(struct archive_entry *, dev_t);
  335. __LA_DECL void archive_entry_set_rdevmajor(struct archive_entry *, dev_t);
  336. __LA_DECL void archive_entry_set_rdevminor(struct archive_entry *, dev_t);
  337. __LA_DECL void archive_entry_set_size(struct archive_entry *, la_int64_t);
  338. __LA_DECL void archive_entry_unset_size(struct archive_entry *);
  339. __LA_DECL void archive_entry_copy_sourcepath(struct archive_entry *, const char *);
  340. __LA_DECL void archive_entry_copy_sourcepath_w(struct archive_entry *, const wchar_t *);
  341. __LA_DECL void archive_entry_set_symlink(struct archive_entry *, const char *);
  342. __LA_DECL void archive_entry_set_symlink_type(struct archive_entry *, int);
  343. __LA_DECL void archive_entry_set_symlink_utf8(struct archive_entry *, const char *);
  344. __LA_DECL void archive_entry_copy_symlink(struct archive_entry *, const char *);
  345. __LA_DECL void archive_entry_copy_symlink_w(struct archive_entry *, const wchar_t *);
  346. __LA_DECL int archive_entry_update_symlink_utf8(struct archive_entry *, const char *);
  347. __LA_DECL void archive_entry_set_uid(struct archive_entry *, la_int64_t);
  348. __LA_DECL void archive_entry_set_uname(struct archive_entry *, const char *);
  349. __LA_DECL void archive_entry_set_uname_utf8(struct archive_entry *, const char *);
  350. __LA_DECL void archive_entry_copy_uname(struct archive_entry *, const char *);
  351. __LA_DECL void archive_entry_copy_uname_w(struct archive_entry *, const wchar_t *);
  352. __LA_DECL int archive_entry_update_uname_utf8(struct archive_entry *, const char *);
  353. __LA_DECL void archive_entry_set_is_data_encrypted(struct archive_entry *, char is_encrypted);
  354. __LA_DECL void archive_entry_set_is_metadata_encrypted(struct archive_entry *, char is_encrypted);
  355. /*
  356. * Routines to bulk copy fields to/from a platform-native "struct
  357. * stat." Libarchive used to just store a struct stat inside of each
  358. * archive_entry object, but this created issues when trying to
  359. * manipulate archives on systems different than the ones they were
  360. * created on.
  361. *
  362. * TODO: On Linux and other LFS systems, provide both stat32 and
  363. * stat64 versions of these functions and all of the macro glue so
  364. * that archive_entry_stat is magically defined to
  365. * archive_entry_stat32 or archive_entry_stat64 as appropriate.
  366. */
  367. __LA_DECL const struct stat *archive_entry_stat(struct archive_entry *);
  368. __LA_DECL void archive_entry_copy_stat(struct archive_entry *, const struct stat *);
  369. /*
  370. * Storage for Mac OS-specific AppleDouble metadata information.
  371. * Apple-format tar files store a separate binary blob containing
  372. * encoded metadata with ACL, extended attributes, etc.
  373. * This provides a place to store that blob.
  374. */
  375. __LA_DECL const void * archive_entry_mac_metadata(struct archive_entry *, size_t *);
  376. __LA_DECL void archive_entry_copy_mac_metadata(struct archive_entry *, const void *, size_t);
  377. /*
  378. * Digest routine. This is used to query the raw hex digest for the
  379. * given entry. The type of digest is provided as an argument.
  380. */
  381. #define ARCHIVE_ENTRY_DIGEST_MD5 0x00000001
  382. #define ARCHIVE_ENTRY_DIGEST_RMD160 0x00000002
  383. #define ARCHIVE_ENTRY_DIGEST_SHA1 0x00000003
  384. #define ARCHIVE_ENTRY_DIGEST_SHA256 0x00000004
  385. #define ARCHIVE_ENTRY_DIGEST_SHA384 0x00000005
  386. #define ARCHIVE_ENTRY_DIGEST_SHA512 0x00000006
  387. __LA_DECL const unsigned char * archive_entry_digest(struct archive_entry *, int /* type */);
  388. /*
  389. * ACL routines. This used to simply store and return text-format ACL
  390. * strings, but that proved insufficient for a number of reasons:
  391. * = clients need control over uname/uid and gname/gid mappings
  392. * = there are many different ACL text formats
  393. * = would like to be able to read/convert archives containing ACLs
  394. * on platforms that lack ACL libraries
  395. *
  396. * This last point, in particular, forces me to implement a reasonably
  397. * complete set of ACL support routines.
  398. */
  399. /*
  400. * Permission bits.
  401. */
  402. #define ARCHIVE_ENTRY_ACL_EXECUTE 0x00000001
  403. #define ARCHIVE_ENTRY_ACL_WRITE 0x00000002
  404. #define ARCHIVE_ENTRY_ACL_READ 0x00000004
  405. #define ARCHIVE_ENTRY_ACL_READ_DATA 0x00000008
  406. #define ARCHIVE_ENTRY_ACL_LIST_DIRECTORY 0x00000008
  407. #define ARCHIVE_ENTRY_ACL_WRITE_DATA 0x00000010
  408. #define ARCHIVE_ENTRY_ACL_ADD_FILE 0x00000010
  409. #define ARCHIVE_ENTRY_ACL_APPEND_DATA 0x00000020
  410. #define ARCHIVE_ENTRY_ACL_ADD_SUBDIRECTORY 0x00000020
  411. #define ARCHIVE_ENTRY_ACL_READ_NAMED_ATTRS 0x00000040
  412. #define ARCHIVE_ENTRY_ACL_WRITE_NAMED_ATTRS 0x00000080
  413. #define ARCHIVE_ENTRY_ACL_DELETE_CHILD 0x00000100
  414. #define ARCHIVE_ENTRY_ACL_READ_ATTRIBUTES 0x00000200
  415. #define ARCHIVE_ENTRY_ACL_WRITE_ATTRIBUTES 0x00000400
  416. #define ARCHIVE_ENTRY_ACL_DELETE 0x00000800
  417. #define ARCHIVE_ENTRY_ACL_READ_ACL 0x00001000
  418. #define ARCHIVE_ENTRY_ACL_WRITE_ACL 0x00002000
  419. #define ARCHIVE_ENTRY_ACL_WRITE_OWNER 0x00004000
  420. #define ARCHIVE_ENTRY_ACL_SYNCHRONIZE 0x00008000
  421. #define ARCHIVE_ENTRY_ACL_PERMS_POSIX1E \
  422. (ARCHIVE_ENTRY_ACL_EXECUTE \
  423. | ARCHIVE_ENTRY_ACL_WRITE \
  424. | ARCHIVE_ENTRY_ACL_READ)
  425. #define ARCHIVE_ENTRY_ACL_PERMS_NFS4 \
  426. (ARCHIVE_ENTRY_ACL_EXECUTE \
  427. | ARCHIVE_ENTRY_ACL_READ_DATA \
  428. | ARCHIVE_ENTRY_ACL_LIST_DIRECTORY \
  429. | ARCHIVE_ENTRY_ACL_WRITE_DATA \
  430. | ARCHIVE_ENTRY_ACL_ADD_FILE \
  431. | ARCHIVE_ENTRY_ACL_APPEND_DATA \
  432. | ARCHIVE_ENTRY_ACL_ADD_SUBDIRECTORY \
  433. | ARCHIVE_ENTRY_ACL_READ_NAMED_ATTRS \
  434. | ARCHIVE_ENTRY_ACL_WRITE_NAMED_ATTRS \
  435. | ARCHIVE_ENTRY_ACL_DELETE_CHILD \
  436. | ARCHIVE_ENTRY_ACL_READ_ATTRIBUTES \
  437. | ARCHIVE_ENTRY_ACL_WRITE_ATTRIBUTES \
  438. | ARCHIVE_ENTRY_ACL_DELETE \
  439. | ARCHIVE_ENTRY_ACL_READ_ACL \
  440. | ARCHIVE_ENTRY_ACL_WRITE_ACL \
  441. | ARCHIVE_ENTRY_ACL_WRITE_OWNER \
  442. | ARCHIVE_ENTRY_ACL_SYNCHRONIZE)
  443. /*
  444. * Inheritance values (NFS4 ACLs only); included in permset.
  445. */
  446. #define ARCHIVE_ENTRY_ACL_ENTRY_INHERITED 0x01000000
  447. #define ARCHIVE_ENTRY_ACL_ENTRY_FILE_INHERIT 0x02000000
  448. #define ARCHIVE_ENTRY_ACL_ENTRY_DIRECTORY_INHERIT 0x04000000
  449. #define ARCHIVE_ENTRY_ACL_ENTRY_NO_PROPAGATE_INHERIT 0x08000000
  450. #define ARCHIVE_ENTRY_ACL_ENTRY_INHERIT_ONLY 0x10000000
  451. #define ARCHIVE_ENTRY_ACL_ENTRY_SUCCESSFUL_ACCESS 0x20000000
  452. #define ARCHIVE_ENTRY_ACL_ENTRY_FAILED_ACCESS 0x40000000
  453. #define ARCHIVE_ENTRY_ACL_INHERITANCE_NFS4 \
  454. (ARCHIVE_ENTRY_ACL_ENTRY_FILE_INHERIT \
  455. | ARCHIVE_ENTRY_ACL_ENTRY_DIRECTORY_INHERIT \
  456. | ARCHIVE_ENTRY_ACL_ENTRY_NO_PROPAGATE_INHERIT \
  457. | ARCHIVE_ENTRY_ACL_ENTRY_INHERIT_ONLY \
  458. | ARCHIVE_ENTRY_ACL_ENTRY_SUCCESSFUL_ACCESS \
  459. | ARCHIVE_ENTRY_ACL_ENTRY_FAILED_ACCESS \
  460. | ARCHIVE_ENTRY_ACL_ENTRY_INHERITED)
  461. /* We need to be able to specify combinations of these. */
  462. #define ARCHIVE_ENTRY_ACL_TYPE_ACCESS 0x00000100 /* POSIX.1e only */
  463. #define ARCHIVE_ENTRY_ACL_TYPE_DEFAULT 0x00000200 /* POSIX.1e only */
  464. #define ARCHIVE_ENTRY_ACL_TYPE_ALLOW 0x00000400 /* NFS4 only */
  465. #define ARCHIVE_ENTRY_ACL_TYPE_DENY 0x00000800 /* NFS4 only */
  466. #define ARCHIVE_ENTRY_ACL_TYPE_AUDIT 0x00001000 /* NFS4 only */
  467. #define ARCHIVE_ENTRY_ACL_TYPE_ALARM 0x00002000 /* NFS4 only */
  468. #define ARCHIVE_ENTRY_ACL_TYPE_POSIX1E (ARCHIVE_ENTRY_ACL_TYPE_ACCESS \
  469. | ARCHIVE_ENTRY_ACL_TYPE_DEFAULT)
  470. #define ARCHIVE_ENTRY_ACL_TYPE_NFS4 (ARCHIVE_ENTRY_ACL_TYPE_ALLOW \
  471. | ARCHIVE_ENTRY_ACL_TYPE_DENY \
  472. | ARCHIVE_ENTRY_ACL_TYPE_AUDIT \
  473. | ARCHIVE_ENTRY_ACL_TYPE_ALARM)
  474. /* Tag values mimic POSIX.1e */
  475. #define ARCHIVE_ENTRY_ACL_USER 10001 /* Specified user. */
  476. #define ARCHIVE_ENTRY_ACL_USER_OBJ 10002 /* User who owns the file. */
  477. #define ARCHIVE_ENTRY_ACL_GROUP 10003 /* Specified group. */
  478. #define ARCHIVE_ENTRY_ACL_GROUP_OBJ 10004 /* Group who owns the file. */
  479. #define ARCHIVE_ENTRY_ACL_MASK 10005 /* Modify group access (POSIX.1e only) */
  480. #define ARCHIVE_ENTRY_ACL_OTHER 10006 /* Public (POSIX.1e only) */
  481. #define ARCHIVE_ENTRY_ACL_EVERYONE 10107 /* Everyone (NFS4 only) */
  482. /*
  483. * Set the ACL by clearing it and adding entries one at a time.
  484. * Unlike the POSIX.1e ACL routines, you must specify the type
  485. * (access/default) for each entry. Internally, the ACL data is just
  486. * a soup of entries. API calls here allow you to retrieve just the
  487. * entries of interest. This design (which goes against the spirit of
  488. * POSIX.1e) is useful for handling archive formats that combine
  489. * default and access information in a single ACL list.
  490. */
  491. __LA_DECL void archive_entry_acl_clear(struct archive_entry *);
  492. __LA_DECL int archive_entry_acl_add_entry(struct archive_entry *,
  493. int /* type */, int /* permset */, int /* tag */,
  494. int /* qual */, const char * /* name */);
  495. __LA_DECL int archive_entry_acl_add_entry_w(struct archive_entry *,
  496. int /* type */, int /* permset */, int /* tag */,
  497. int /* qual */, const wchar_t * /* name */);
  498. /*
  499. * To retrieve the ACL, first "reset", then repeatedly ask for the
  500. * "next" entry. The want_type parameter allows you to request only
  501. * certain types of entries.
  502. */
  503. __LA_DECL int archive_entry_acl_reset(struct archive_entry *, int /* want_type */);
  504. __LA_DECL int archive_entry_acl_next(struct archive_entry *, int /* want_type */,
  505. int * /* type */, int * /* permset */, int * /* tag */,
  506. int * /* qual */, const char ** /* name */);
  507. /*
  508. * Construct a text-format ACL. The flags argument is a bitmask that
  509. * can include any of the following:
  510. *
  511. * Flags only for archive entries with POSIX.1e ACL:
  512. * ARCHIVE_ENTRY_ACL_TYPE_ACCESS - Include POSIX.1e "access" entries.
  513. * ARCHIVE_ENTRY_ACL_TYPE_DEFAULT - Include POSIX.1e "default" entries.
  514. * ARCHIVE_ENTRY_ACL_STYLE_MARK_DEFAULT - Include "default:" before each
  515. * default ACL entry.
  516. * ARCHIVE_ENTRY_ACL_STYLE_SOLARIS - Output only one colon after "other" and
  517. * "mask" entries.
  518. *
  519. * Flags only for archive entries with NFSv4 ACL:
  520. * ARCHIVE_ENTRY_ACL_STYLE_COMPACT - Do not output the minus character for
  521. * unset permissions and flags in NFSv4 ACL permission and flag fields
  522. *
  523. * Flags for for archive entries with POSIX.1e ACL or NFSv4 ACL:
  524. * ARCHIVE_ENTRY_ACL_STYLE_EXTRA_ID - Include extra numeric ID field in
  525. * each ACL entry.
  526. * ARCHIVE_ENTRY_ACL_STYLE_SEPARATOR_COMMA - Separate entries with comma
  527. * instead of newline.
  528. */
  529. #define ARCHIVE_ENTRY_ACL_STYLE_EXTRA_ID 0x00000001
  530. #define ARCHIVE_ENTRY_ACL_STYLE_MARK_DEFAULT 0x00000002
  531. #define ARCHIVE_ENTRY_ACL_STYLE_SOLARIS 0x00000004
  532. #define ARCHIVE_ENTRY_ACL_STYLE_SEPARATOR_COMMA 0x00000008
  533. #define ARCHIVE_ENTRY_ACL_STYLE_COMPACT 0x00000010
  534. __LA_DECL wchar_t *archive_entry_acl_to_text_w(struct archive_entry *,
  535. la_ssize_t * /* len */, int /* flags */);
  536. __LA_DECL char *archive_entry_acl_to_text(struct archive_entry *,
  537. la_ssize_t * /* len */, int /* flags */);
  538. __LA_DECL int archive_entry_acl_from_text_w(struct archive_entry *,
  539. const wchar_t * /* wtext */, int /* type */);
  540. __LA_DECL int archive_entry_acl_from_text(struct archive_entry *,
  541. const char * /* text */, int /* type */);
  542. /* Deprecated constants */
  543. #define OLD_ARCHIVE_ENTRY_ACL_STYLE_EXTRA_ID 1024
  544. #define OLD_ARCHIVE_ENTRY_ACL_STYLE_MARK_DEFAULT 2048
  545. /* Deprecated functions */
  546. __LA_DECL const wchar_t *archive_entry_acl_text_w(struct archive_entry *,
  547. int /* flags */) __LA_DEPRECATED;
  548. __LA_DECL const char *archive_entry_acl_text(struct archive_entry *,
  549. int /* flags */) __LA_DEPRECATED;
  550. /* Return bitmask of ACL types in an archive entry */
  551. __LA_DECL int archive_entry_acl_types(struct archive_entry *);
  552. /* Return a count of entries matching 'want_type' */
  553. __LA_DECL int archive_entry_acl_count(struct archive_entry *, int /* want_type */);
  554. /* Return an opaque ACL object. */
  555. /* There's not yet anything clients can actually do with this... */
  556. struct archive_acl;
  557. __LA_DECL struct archive_acl *archive_entry_acl(struct archive_entry *);
  558. /*
  559. * extended attributes
  560. */
  561. __LA_DECL void archive_entry_xattr_clear(struct archive_entry *);
  562. __LA_DECL void archive_entry_xattr_add_entry(struct archive_entry *,
  563. const char * /* name */, const void * /* value */,
  564. size_t /* size */);
  565. /*
  566. * To retrieve the xattr list, first "reset", then repeatedly ask for the
  567. * "next" entry.
  568. */
  569. __LA_DECL int archive_entry_xattr_count(struct archive_entry *);
  570. __LA_DECL int archive_entry_xattr_reset(struct archive_entry *);
  571. __LA_DECL int archive_entry_xattr_next(struct archive_entry *,
  572. const char ** /* name */, const void ** /* value */, size_t *);
  573. /*
  574. * sparse
  575. */
  576. __LA_DECL void archive_entry_sparse_clear(struct archive_entry *);
  577. __LA_DECL void archive_entry_sparse_add_entry(struct archive_entry *,
  578. la_int64_t /* offset */, la_int64_t /* length */);
  579. /*
  580. * To retrieve the xattr list, first "reset", then repeatedly ask for the
  581. * "next" entry.
  582. */
  583. __LA_DECL int archive_entry_sparse_count(struct archive_entry *);
  584. __LA_DECL int archive_entry_sparse_reset(struct archive_entry *);
  585. __LA_DECL int archive_entry_sparse_next(struct archive_entry *,
  586. la_int64_t * /* offset */, la_int64_t * /* length */);
  587. /*
  588. * Utility to match up hardlinks.
  589. *
  590. * The 'struct archive_entry_linkresolver' is a cache of archive entries
  591. * for files with multiple links. Here's how to use it:
  592. * 1. Create a lookup object with archive_entry_linkresolver_new()
  593. * 2. Tell it the archive format you're using.
  594. * 3. Hand each archive_entry to archive_entry_linkify().
  595. * That function will return 0, 1, or 2 entries that should
  596. * be written.
  597. * 4. Call archive_entry_linkify(resolver, NULL) until
  598. * no more entries are returned.
  599. * 5. Call archive_entry_linkresolver_free(resolver) to free resources.
  600. *
  601. * The entries returned have their hardlink and size fields updated
  602. * appropriately. If an entry is passed in that does not refer to
  603. * a file with multiple links, it is returned unchanged. The intention
  604. * is that you should be able to simply filter all entries through
  605. * this machine.
  606. *
  607. * To make things more efficient, be sure that each entry has a valid
  608. * nlinks value. The hardlink cache uses this to track when all links
  609. * have been found. If the nlinks value is zero, it will keep every
  610. * name in the cache indefinitely, which can use a lot of memory.
  611. *
  612. * Note that archive_entry_size() is reset to zero if the file
  613. * body should not be written to the archive. Pay attention!
  614. */
  615. struct archive_entry_linkresolver;
  616. /*
  617. * There are three different strategies for marking hardlinks.
  618. * The descriptions below name them after the best-known
  619. * formats that rely on each strategy:
  620. *
  621. * "Old cpio" is the simplest, it always returns any entry unmodified.
  622. * As far as I know, only cpio formats use this. Old cpio archives
  623. * store every link with the full body; the onus is on the dearchiver
  624. * to detect and properly link the files as they are restored.
  625. * "tar" is also pretty simple; it caches a copy the first time it sees
  626. * any link. Subsequent appearances are modified to be hardlink
  627. * references to the first one without any body. Used by all tar
  628. * formats, although the newest tar formats permit the "old cpio" strategy
  629. * as well. This strategy is very simple for the dearchiver,
  630. * and reasonably straightforward for the archiver.
  631. * "new cpio" is trickier. It stores the body only with the last
  632. * occurrence. The complication is that we might not
  633. * see every link to a particular file in a single session, so
  634. * there's no easy way to know when we've seen the last occurrence.
  635. * The solution here is to queue one link until we see the next.
  636. * At the end of the session, you can enumerate any remaining
  637. * entries by calling archive_entry_linkify(NULL) and store those
  638. * bodies. If you have a file with three links l1, l2, and l3,
  639. * you'll get the following behavior if you see all three links:
  640. * linkify(l1) => NULL (the resolver stores l1 internally)
  641. * linkify(l2) => l1 (resolver stores l2, you write l1)
  642. * linkify(l3) => l2, l3 (all links seen, you can write both).
  643. * If you only see l1 and l2, you'll get this behavior:
  644. * linkify(l1) => NULL
  645. * linkify(l2) => l1
  646. * linkify(NULL) => l2 (at end, you retrieve remaining links)
  647. * As the name suggests, this strategy is used by newer cpio variants.
  648. * It's noticeably more complex for the archiver, slightly more complex
  649. * for the dearchiver than the tar strategy, but makes it straightforward
  650. * to restore a file using any link by simply continuing to scan until
  651. * you see a link that is stored with a body. In contrast, the tar
  652. * strategy requires you to rescan the archive from the beginning to
  653. * correctly extract an arbitrary link.
  654. */
  655. __LA_DECL struct archive_entry_linkresolver *archive_entry_linkresolver_new(void);
  656. __LA_DECL void archive_entry_linkresolver_set_strategy(
  657. struct archive_entry_linkresolver *, int /* format_code */);
  658. __LA_DECL void archive_entry_linkresolver_free(struct archive_entry_linkresolver *);
  659. __LA_DECL void archive_entry_linkify(struct archive_entry_linkresolver *,
  660. struct archive_entry **, struct archive_entry **);
  661. __LA_DECL struct archive_entry *archive_entry_partial_links(
  662. struct archive_entry_linkresolver *res, unsigned int *links);
  663. #ifdef __cplusplus
  664. }
  665. #endif
  666. /* This is meaningless outside of this header. */
  667. #undef __LA_DECL
  668. #endif /* !ARCHIVE_ENTRY_H_INCLUDED */