2 Fixed a bug in the LZX decompressor: malicious input data could cause
3 out of bounds writes to memory (since wimlib v1.2.2).
5 A file can now have both an unnamed data stream ("file contents") and a
6 reparse point stream. Such files can exist as a result of the use of
7 certain Windows features, such as offline storage, including "OneDrive".
8 wimlib will now store and restore both streams on Windows as well as in
9 NTFS-3g mode. Microsoft's WIMGAPI also has this behavior.
11 On Windows, named data streams of encrypted files are no longer stored
12 twice in WIM archives.
14 On Windows, named data streams are now correctly extracted to existing
15 "readonly" directories. Before, an error would be reported.
17 On Windows, when doing an extraction in "WIMBoot mode", files larger
18 than 4 gigabytes are now never extracted as externally backed. This
19 works around a bug in Microsoft's "WOF" driver.
21 The '--enable-verify-compression' configure option has been removed. If
22 you want to verify a WIM file, use the 'wimverify' program.
24 The way the "file count", "directory count", "total bytes", and "hard
25 link bytes" image statistics (stored in the WIM XML data) is calculated
26 has been slightly changed.
28 In mounted WIM images, the disk usage provided for each file (st_blocks)
29 is now the compressed size rather than the uncompressed size.
31 The performance of NTFS-3g capture mode has been slightly improved.
34 Improved the LZX compressor. It is now 15-20% faster than before and
35 provides a slightly better compression ratio.
37 Improved the LZMS compressor. It now provides a compression ratio
38 slightly better than WIMGAPI while still being faster and using slightly
41 The compression chunk size in solid resources, e.g. when capturing or
42 exporting a WIM file using the '--solid' option, now defaults to 64 MiB
43 (67108864 bytes) instead of 32 MiB (33554432 bytes). This provides a
44 better compression ratio and is the same value that WIMGAPI uses. The
45 memory usage is less than 50% higher than wimlib v1.7.4 and is slightly
46 lower than WIMGAPI's memory usage, but if it is too much, it is still
47 possible to choose a lower value, e.g. with the '--solid-chunk-size'
48 option to wimlib-imagex.
50 The '--chunk-size' and '--solid-chunk-size' options to wimlib-imagex now
51 accept the 'K', 'M', and 'G' suffixes.
53 Files are now sorted by name extension when creating a solid WIM file.
55 Fixed various issues related to capture/apply of EFS-encrypted files on
58 The file list printed by 'wimdir' is now sorted by the platform-specific
59 case sensitivity setting, rather than always case sensitively. This
60 also affects the library function wimlib_iterate_dir_tree().
62 On Windows, some error and warning messages have been improved.
65 The Windows binary distribution no longer contains third party DLLs.
66 These dependencies are instead compiled directly into the libwim DLL.
68 Added more fixes for wimlib on non-x86 architectures such as ARM.
70 Extracting files to a Windows PE in-memory filesystem no longer fails if
71 the target files do not yet exist.
73 Improved the performance of XPRESS compression and LZMS decompression.
75 Enabled SSSE3 accelerated SHA-1 computation in x86_64 Windows builds.
76 It will automatically be faster on newer Intel and AMD processors.
78 Removed the --with-imagex-progname and --enable-more-assertions
82 Fix for very slow export from solid WIM / ESD files.
84 Fix for LZX and LZMS algorithms on non-x86 architectures, such as ARM.
86 New progress message: WIMLIB_PROGRESS_MSG_HANDLE_ERROR. Applications
87 may use this to treat some types of errors as non-fatal.
89 The library now permits making in-memory changes to a WIMStruct backed
90 by a read-only WIM file.
92 Fixes for "WIMBoot" extraction mode (Windows only):
94 When not using the WOF driver, extraction no longer fails if the
95 disk containing the WIM file has too many partitions.
97 When matching patterns in [PrepopulateList], all hard links of
98 each file are now considered.
100 The system registry files are now automatically treated as being
101 in [PrepopulateList].
103 Added a hack to try to work around an intermittent bug in
104 Microsoft's WOF (Windows Overlay Filesystem) driver.
107 Made more improvements to the XPRESS, LZX, and LZMS compressors.
109 A number of improvements to the Windows port:
111 Fixes for setting short filenames.
113 Faster "WIMBoot" extraction.
115 Updated and slimmed down the dependent DLLs.
117 ACL inheritence bits are now restored.
119 Mandatory integrity labels are now backed up and restored.
121 Added a workaround for an issue where in rare cases, wimlib could create
122 a compressed data stream that could not be read correctly by Windows
123 after an extraction in "WIMBoot" mode.
126 Added file count progress data for
127 WIMLIB_PROGRESS_MSG_EXTRACT_FILE_STRUCTURE and
128 WIMLIB_PROGRESS_MSG_EXTRACT_METADATA.
130 Added support for testing file exclusions via the user-provided
133 Some documentation improvements.
135 Made some clarifications to the license text in the COPYING file.
138 Made more improvements to the XPRESS, LZX, and LZMS compressors.
140 The default compression mode for wimcapture is now LZX compression in
141 its default mode, which is the same as '--compress=maximum'.
143 You can now specify an optional integer compression level to the
144 '--compress' option; e.g. '--compress=lzx:75'.
146 Made a minor change to the LZMS compressor and decompressor to fix an
147 incompatibility with the Microsoft implementation. In the unlikely
148 event that you created an LZMS-compressed WIM with wimlib v1.7.0 or
149 earlier and a checksum error is reported when extracting files from it
150 with wimlib v1.7.1, decompress it with v1.7.0 then compress it with
153 Added 'verify' subcommand to wimlib-imagex.
155 Notable library changes:
157 Custom compressor parameters have been removed from the library
158 in favor of the simpler level-based API.
160 Decompressor parameters have been removed entirely.
162 Library users can now specify a custom file for warning and
163 error messages to be sent to, rather than the default of
166 New progress messages:
167 WIMLIB_PROGRESS_MSG_EXTRACT_FILE_STRUCTURE,
168 WIMLIB_PROGRESS_MSG_EXTRACT_METADATA.
170 New function: wimlib_verify_wim().
173 Improved compression, decompression, and extraction performance.
175 Improved compatibility with version 3584 WIM / ESD files:
176 - Add support for reading and writing multiple solid blocks per
177 archive, which WIMGAPI/DISM can create when appending an image.
178 - Correctly create solid blocks larger than 4 GiB.
180 'add' commands passed to wimupdate will now replace existing
181 nondirectory files by default. Use the --no-replace option to get the
184 The license for the library now contains an exception that allows using
185 it under the LGPL. See the COPYING file for details.
187 In reparse-point fixup mode (the default for capture), symbolic links
188 and junctions that point outside the tree being captured are no longer
189 excluded from capture.
191 Added support for "WIMBoot" capture and extraction. See the
192 documentation for the new '--wimboot' option to wimcapture and wimapply
193 for more information.
195 On UNIX-like systems, you can now backup and restore device nodes, named
196 pipes, and sockets. In addition, 32-bit user and group IDs are now
199 The way that UNIX data is stored in WIM files has been changed. If you
200 captured any WIMs with the --unix-data option, to upgrade them you'll
201 need to apply them with --unix-data using wimlib-imagex v1.6.2, then
202 re-capture them with --unix-data using this version.
204 wimlib now understands tagged metadata items, such as object IDs, that
205 can be stored in WIM directory entries.
207 Removed the --hardlink and --symlink options to wimapply, since I don't
208 think they are too useful and they got in the way of improving the code.
210 WIMs will now retain their GUIDs when rebuilt (e.g. with wimoptimize).
212 The 'mkwinpeimg' script now supports writing the ISO image to standard
215 The <ARCH> element in WIM XML data is now exported correctly.
217 On Windows, sparse file attributes are no longer set on extracted files.
218 Oddly enough, this actually saves disk space in some cases.
220 On UNIX, configuring with --disable-xattr or --enable-xattr is no longer
221 supported. Mounting WIM images now always requires extended attribute
222 support. Use --without-fuse to disable support for mounting WIM images;
223 this will also disable the need for extended attribute support.
225 Configuring with --enable-ssse3-sha1 now works correctly.
227 The shared library version has been bumped up. The main
228 incompatibilities are:
230 - WIMLIB_COMPRESSION_TYPE_XPRESS is now 1 and
231 WIMLIB_COMPRESSION_TYPE_LZX is now 2 (so it's the same as
234 - User-provided progress functions are now registered using a
235 separate function, wimlib_register_progress_function(). The
236 'progress_func' argument to many functions no longer exists.
238 - The return value from user-provided progress functions is now
241 - A context argument has been added to the prototype of
242 user-provided progress functions.
244 - 'struct wimlib_capture_config' has been removed. The library
245 now takes the path to the configuration file directly. This
246 affects wimlib_add_image(), wimlib_add_image_multisource(),
247 and wimlib_update_image(). However, a NULL value passed in
248 the argument retains the same meaning.
250 - Removed deprecated functions: some (de)compression functions,
251 wimlib_extract_files(), and wimlib_print_metadata().
253 - Removed extraction flags: WIMLIB_EXTRACT_FLAG_HARDLINK,
254 WIMLIB_EXTRACT_FLAG_SYMLINK, WIMLIB_EXTRACT_FLAG_FILE_ORDER,
255 and WIMLIB_EXTRACT_FLAG_SEQUENTIAL.
257 - Removed some progress messages:
258 WIMLIB_PROGRESS_MSG_APPLY_TIMESTAMPS,
259 WIMLIB_PROGRESS_MSG_EXTRACT_DIR_STRUCTURE_BEGIN,
260 WIMLIB_PROGRESS_MSG_EXTRACT_DIR_STRUCTURE_END. Numbering
263 - Removed some error codes. Numbering stays the same.
265 - Replaced WIMLIB_UNMOUNT_FLAG_LAZY with
266 WIMLIB_UNMOUNT_FLAG_FORCE.
268 - WIM paths passed to progress functions now have a leading
272 Case-insensitive comparisons of strings (e.g. filenames) containing
273 UTF-16 codepoints above 32767 are now done correctly.
275 Fixed build failure on Mac OS X.
277 wimunmount now provides the '--new-image' option to cause changes to a
278 read-write mounted image to be committed as a new image rather than as
279 an update of the mounted image. (The corresponding new library flag is
280 WIMLIB_UNMOUNT_FLAG_NEW_IMAGE.)
282 The LZMS ("recovery") compression chunk size, or "dictionary size", may
283 now be up to 1 GiB (1,073,741,824 bytes).
285 The performance of LZX ("maximum") and LZMS ("recovery") compression
286 with large chunk sizes has been slightly improved.
289 Stored files with size exactly 4 GiB (4,294,967,296 bytes) are now
290 decompressed correctly.
292 Fixed a bug in the LZX compressor introduced in v1.5.3. The bug
293 occurred in an unlikely case, and due to validity checks it did not
294 affect successfully created archives.
296 Fixed a minor compatibility issue with the LZMS compressor and
297 decompressor. This is *not* the default compression type and was only
298 introduced in v1.6.0. In the unlikely event that you created an
299 LZMS-compressed WIM with v1.6.0 and a checksum error is reported when
300 applying it with v1.6.1, decompress it with v1.6.0 then compress it with
303 Memory usage for LZMS and LZX compression has been decreased.
305 wimextract now allows wildcard characters in paths specified on the
306 command line. Also, the '--strict-wildcards' option has been removed
307 and replaced with the inverse option '--nullglob'. See the
308 documentation for wimextract for more details and changes.
310 The wimlib_extract_files() function is now considered deprecated in
311 favor of wimlib_extract_paths().
313 Fixed more permissions problems when extracting files on Windows.
315 A new '--no-attributes' option has been added to wimapply and
316 wimextract. The library flag is WIMLIB_EXTRACT_FLAG_NO_ATTRIBUTES.
318 The default chunk size is now set correctly when changing the
319 compression type of a WIM, for example with 'wimoptimize'.
321 The '--metadata' option to wiminfo has been replaced with the
322 '--detailed' option to wimdir.
324 In relevant wimlib-imagex commands, '--solid' may now be used as an
325 alias for '--pack-streams'.
328 Support for extracting and updating the new version 3584 WIMs has been
329 added. These WIMs typically pack many streams ("files") together into a
330 single compressed resource, thereby saving space. This degrades the
331 performance of random access (such as that which occurs on a mounted
332 image), but optimizations have been implemented for extraction. These
333 new WIM files also typically use a new compression format (LZMS), which
334 is similar to LZMA and can offer a better compression ratio than LZX.
335 These new WIM files can be created using `wimcapture' with
336 the '--compress=lzms --pack-streams' options. Note: this new WIM format
337 is used by the Windows 8 web downloader, but important segments of the
338 raw '.esd' files are encrypted, so wimlib will not be able to extract
339 such files until they are first decrypted.
341 wimlib now supports extracting files and directories from a WIM image
342 based on a "listfile" that itself contains the list of paths to extract.
343 For `wimextract', the syntax is to specify @LISTFILE instead of a PATH,
344 and for the library itself, the new APIs are wimlib_extract_pathlist()
345 and wimlib_extract_paths(). Path globs containing wildcard characters
348 For searching WIM files, wimlib now has configurable case sensitivity.
349 The default on Windows is still case-insensitive and the default on
350 UNIX-like systems is still case-sensitive, but this can be overridden
351 on either platform through flags to wimlib_global_init(). For
352 `wimlib-imagex', the environmental variable WIMLIB_IMAGEX_IGNORE_CASE
353 can be set to 1 or 0 for case-insensitive or case-sensitive behavior,
356 Support for compression chunk sizes greater than the default of 32768
357 bytes has been added. A larger chunk size typically results in a better
358 compression ratio. However, the MS implementation is seemingly not
359 compatible with all chunk sizes, especially for LZX compression, so the
360 defaults remain unchanged, with the exception of the new LZMS-compressed
361 WIMs, which use a larger chunk size by default.
363 The compression/decompression API exported by wimlib has been changed.
364 Now one set of functions handles all supported compression formats.
366 `wimcapture' and `wimappend' will now display the progress of scanning
367 the directory tree to capture, in addition to the progress of writing
368 data to the WIM. The '--verbose' option no longer does anything. The
369 library API change for this is the addition of several members to
370 `struct wimlib_progress_info_scan' available to progress callbacks.
372 `mkwinpeimg' now correctly handles the '--start-script' option when the
373 start script is not in the working directory.
375 Sequential extraction, previously requested by using
376 WIMLIB_EXTRACT_FLAG_SEQUENTIAL, is now the default.
377 WIMLIB_EXTRACT_FLAG_FILE_ORDER can be used to get the old default
378 behavior (extract in file order).
381 The new LZX compressor added in v1.5.2 has been improved and is now
382 enabled by default, except when `wimcapture' or `wimappend' is run
383 *without* the '--compress' option, in which case the faster LZX
384 compressor is used (the same as before). This behavior is reasonably
385 consistent with ImageX which actually uses "fast" (XPRESS) compression
386 by default. In those cases, use '--compress=maximum' to explicitly
387 capture a WIM image using the new (slower but better) LZX compressor.
389 The '--compress-slow' option still exists to `wimlib-imagex optimize',
390 but its new behavior is to tweak the new LZX compressor even more to
391 produce an even better compression ratio at the cost of more time spent
394 `wimlib-imagex optimize' now supports the '--compress=TYPE' option,
395 which recompresses the WIM file using the specified compression TYPE.
396 The new library API function used for this is
397 wimlib_set_output_compression_type().
399 Added the wimlib_get_xml_data() function to allow library clients to
400 easily retrieve the raw XML data from a WIM file if needed.
402 Fixed a bug that could cause an error code to be incorrectly returned
403 when writing XML data containing a <WINDOWS> element.
405 Mounted WIM images will now correctly show the default file stream even
406 if appears in the alternate data stream entries of the corresponding WIM
410 Added a new experimental LZX compressor which can be enabled by passing
411 '--compress-slow' to `wimlib-imagex capture' or `wimlib-imagex
412 optimize'. (The latter is only applicable if the WIM is already
413 LZX-compressed and the '--recompress' option is also given.) The
414 experimental compressor is much slower but compresses the data slightly
415 more --- currently usually to within a fraction of a percent of the
416 results from WIMGAPI/ImageX.
418 A workaround has been added for compatibility with versions of WinPE
419 that interpret alternate data stream entries in the boot WIM
422 An alignment bug that caused a crash in the LZX decompressor on some
425 wimlib now attempts to clear the WIM_HDR_FLAG_WRITE_IN_PROGRESS flag in
426 the WIM header when restoring the previous state of a WIM it failed to
429 Added a workaround to avoid an access denied error on Windows when
430 replacing a WIM file that another process has opened.
433 wimlib can now open WinPE WIMs from WAIK v2.1, which had a quirk that
434 needed to be handled.
436 A bug in the interpretation of negative IMAGE indices in the
437 --update-of=[WIMFILE:]IMAGE option to `wimlib-imagex capture' and
438 `wimlib-imagex append' has been fixed.
440 A workaround has been added to successfully apply security descriptors
441 with empty DACLs when the NTFS-3g apply mode is being used with NTFS-3g
442 2013.1.13 or earlier.
444 `wimlib-imagex capture' can now accept the '--delta-from' option
448 Added support for "pipable" WIMs. Pipable WIMs allow capturing images
449 to standard output and applying images from standard input, but they are
450 not compatible with Microsoft's software and are not created by default.
451 See the documentation for --pipable flag of `wimlib-imagex capture' for
454 To better support incremental backups, added support for declaring an
455 image as a modified form of another image. See the documentation for
456 the '--update-of' option of `wimlib-imagex append' and `wimlib-imagex
459 Added supported for "delta" WIMs. See the documentation for the
460 '--delta-from' option of `wimlib-imagex capture'.
462 The library support for managing split WIMs has been changed to support
463 other arrangements, such as delta WIMs, and be easier to use. This
464 change is visible in `wimlib-imagex', which also can now accept the
465 '--ref' option multiple times, and also now supports "delta" WIMs as
468 wimlib now preserves WIM integrity tables by default, even if
469 WIMLIB_WRITE_FLAG_CHECK_INTEGRITY is not specified. This changes the
470 behavior of `wimlib-imagex' whenever the WIM being operated on contains
471 an integrity table and the '--check' option is not specified.
473 `wimlib-imagex capture' now creates LZX-compressed WIMs by default
474 (when --compress is not specified). This provides the best compression
475 ratio by default, which is usually what is desired, at a cost of some
478 `wimlib-imagex' now supports being invoked as wimCOMMAND, where COMMAND
479 is the command as in `wimlib-imagex COMMAND'; for example, it can be
480 invoked as `wimapply' as an alternative to `wimlib-imagex apply'. The
481 appropriate hard links are created in UNIX installations of
482 `wimlib-imagex', while for the Windows distribution of `wimlib-imagex',
483 batch files that emulate this behavior are generated.
485 Security descriptors are now extracted correctly on Windows.
487 Fixed archiving DOS names in NTFS-3g capture mode.
489 The extraction code has been rewritten and it will now be easier to
490 support new features on all supported backends (currently Win32, UNIX,
491 and NTFS-3g). For example, hard-linked extraction mode (--hardlink) is
492 now supported on all backends, not just UNIX.
494 `mkwinpeimg' now supports grabbing files from the WAIK supplement rather
495 than the WAIK itself.
497 wimlib_global_init() now, by default, attempts to acquire additional
498 privileges on Windows, so library clients need not do this.
500 This update bumps the shared library version number up to 9, since it is
501 not binary compatibible with previous releases.
504 Fixed bug in `wimlib-imagex export' that made it impossible to export an
505 image from a WIM that is readonly at the filesystem level.
507 Return error code rather than segfaulting when trying to list files from
508 a non-first part of a split WIM.
510 Joining a WIM will now preserve the RP_FIX and READONLY flags.
513 On Windows, paths given to wimlib-imagex are now treated case
516 Improved behavior regarding invalid filenames; in particular, on
517 Windows, wimlib-imagex will, when extracting, now omit (with an option
518 to override this default) filenames differing only in case, or filenames
519 containing characters not valid on Windows.
521 On Windows, wimlib now supports capturing and extracting long paths
522 (longer than the so-called MAX_PATH).
524 On Windows, `wimlib-imagex update' now acquires proper privileges when
525 running as an Administrator.
527 `wimlib-imagex update' will now complain if no image is specified when
528 trying to update a multi-image WIM.
530 `wimlib-imagex update' now supports specifying a single update command
531 directly on the command line using the --command option.
533 wimlib-imagex will now choose different units for progress messages,
534 depending on the amount of data that needs to be processed.
536 `wimlib-imagex append' will now generate a unique WIM image name if no
537 name is specified and the defaulted name already exists in the WIM.
539 wimlib now allows you to create unnamed WIM images, which can then only
540 be referred to by index.
542 wimlib now allows you to explicitly declare you want write access to a
543 WIM by providing the WIMLIB_OPEN_FLAG_WRITE_ACCESS flag to
546 wimlib now respects the WIM_HDR_FLAG_READONLY flag when set in the WIM
549 Progress callbacks have been added to wimlib's wimlib_update_image()
552 Added wimlib_get_wim_info(), wimlib_set_wim_info(),
553 wimlib_iterate_dir_tree(), and wimlib_iterate_lookup_table() functions
556 NTFS-3g capture now only warns about two conditions previously treated
559 Fixed a couple issues with using wimlib-imagex on UDF filesystems on
562 wimlib now correctly detects and returns an error when reading a WIM
563 image with a cyclic directory structure. (Fun fact: such a WIM will
564 crash Microsoft's software.)
567 Added new "extract" and "update" subcommands to wimlib-imagex, along
568 with associated APIs in the library. These commands are intended mainly
569 for Windows use but can be used on UNIX as well.
571 Many documentation improvements.
573 Fixed a bug in the Windows build where relative symbolic links were not
574 captured in reparse-point fixup mode.
576 Fixed a bug in the Windows build where file handles were left open to
577 the WIM file, causing `wimlib_imagex optimize' to fail in some cases.
579 Fixed a bug in the Windows build of wimlib-imagex where globbing
580 split-WIM parts could cause the program to crash.
582 Fixed a bug where the creation time of WIM images would be shown instead
583 of the last modification time.
585 With the Windows build it is now possible to restore a WIM containing
586 symbolic links as a non-Administrator; however you will receive warnings
587 about not being able to extract the symbolic links.
590 Capturing a WIM image should now be significantly faster in most cases
591 due to improved use of the operating system's cache and avoiding reading
592 files twice whenever possible.
594 The Windows build should now work on Windows XP.
596 The Windows build now supports capturing and restoring hidden,
597 compressed, sparse, and encrypted files.
599 The Windows build now supports capturing and applying WIM images from
600 filesystems other than NTFS (with some reduced functionality).
602 The Windows build now extracts short names correctly.
604 Added support for "reparse-point" fixups (i.e. fixing up of symbolic
605 links). See docs for --rpfix and --norpfix flags of `wimlib-imagex
606 capture' and `wimlib-imagex apply'.
608 The performance of splitting and joining WIMs should be slightly
611 The LZX and XPRESS compression and decompression functions are now
612 exported from the library.
615 Improvements and bugfixes for the Windows build.
617 Added --strict-acls options.
619 Fixed the way that wimlib determines the order of images in the WIM.
622 Since wimlib can now be used on Windows, wimlib's implementation of
623 ImageX has been renamed to wimlib-imagex to avoid confusion with
624 Microsoft's implementation of ImageX, which would have the same file
625 name ("imagex.exe"). If you really don't like this you can pass the
626 --with-imagex-progname option to `configure' to choose a different name,
627 or even simply rename the binary yourself (but the former way will
628 configure the man pages to use the chosen name).
630 Various bugs fixed in the Windows build. Mainly to do with capturing
631 and restoring alternate data streams correctly in weird cases, and
632 requesting the correct privileges when opening files. Also added the
633 --noacls options to wimlib-imagex capture, append, and apply.
635 Windows build again: FindFirstStreamW() and FindNextStreamW() are now
636 dynamically loaded, so this may make the library compatible with Windows
637 XP (however, there may still be other problems).
640 Added experimental support for native Windows builds. Binaries can be
641 downloaded from the SourceForge page.
643 --source-list option added to `imagex capture' and `imagex append'.
645 Better support for different character encodings.
648 Storing UNIX file owners, groups, and modes in WIM images is now
649 possible using `imagex capture' with the --unix-data flag.
651 Minor bug fixes and documentation fixes.
654 NTFS capture: Fixed capturing duplicate reparse points.
656 NTFS capture: Capture first unnamed stream if there are more than one
657 (print warning instead of error).
659 Allow multiple test cases to execute concurrently (e.g. make -j2 check).
662 Added --arch switch to mkwinpeimg script to support getting AMD64 WinPE
665 Update to work with ntfs-3g version 2013.1.13.
668 Fixed truncating file to shorter but non-zero length on read-write
671 Various code cleanups and minor documentation fixes.
674 LZX and XPRESS decompression have received some additional optimizations
675 and should now be even faster. (Although, they were already pretty
676 fast--- much faster than typical I/O speeds.)
678 Fixed a bug introduced in v1.2.1 that would cause a directory tree
679 containing hard links to be captured incorrectly in some cases.
682 By default, unmounting a read-write mounted WIM with 'imagex unmount
683 --commit' will now change the WIM in-place without needing to write the
684 entire WIM again. Use 'imagex unmount --commit --rebuild' to get the
687 'imagex unmount' no longer has a hard-coded limit of 10 minutes to wait
688 for a response from the daemon servicing the mounted WIM. Instead,
689 every second 'imagex unmount' will check if the daemon is still alive,
690 and keep waiting if so, otherwise terminate with an error.
692 'imagex unmount --commit' on a read-write mounted WIM will now print
693 progress information regarding the writing of new or modified streams
694 the WIM, just like when capturing or appending a WIM.
696 A small change has been made to XPRESS compression and it should improve
697 the compression ratio slightly.
699 A change was made that may improve performance slightly when applying a
700 WIM image to a NTFS volume.
702 Microsoft has managed to introduce even more bugs into their software,
703 and now the WIMs for Windows 8 have incorrect (too low) reference counts
704 for some streams. This is unsafe because such streams can be removed
705 when they are in actuality still referenced in the WIM (perhaps by a
706 different image). wimlib will now work around this problem by fixing
707 the stream reference counts. This is only done when wimlib_delete_image() is
708 called ('imagex delete') or when wimlib_mount_image() is called with
709 WIMLIB_MOUNT_FLAG_READWRITE ('imagex mountrw'). Please note that this
710 requires reading the metadata for all images in the WIM, so this will
711 make these operations noticably slower on WIMs with multiple images.
713 Various other bugfixes.
716 Appending images to a WIM is now be done by default without re-building
717 the whole WIM. Use the --rebuild flag to get the old behavior (which
718 was to re-build the entire WIM when a new image is appended).
720 A new command `imagex optimize' is now available to manually re-build a
721 WIM that has wasted space due to repeated appends.
723 Progress information has been improved, and now arbitrary callback
724 functions can be used to show the progress of a WIM operation.
726 A possible bug with changing the bootable image of a WIM was fixed.
728 Some advisory locking is now done to prevent two processes from
729 modifying a WIM at the same time (but only in some cases). For example,
730 you cannot mount two images from a WIM read-write at the same time.
732 Some functions have been reorganized:
733 * wimlib_mount() renamed to wimlib_mount_image().
734 * wimlib_unmount() renamed to wimlib_unmount_image().
735 * wimlib_overwrite_xml_and_header() removed as
736 wimlib_overwrite() suffices now.
737 * wimlib_apply_image_to_ntfs_volume() removed as
738 wimlib_extract_image() suffices now.
739 * wimlib_add_image_from_ntfs_volume() removed as
740 * wimlib_add_image() suffices now.
742 Previously, the soname of libwim.so has been 0.0.0, despite many
743 interface changes. The soname is now updated to 1.0.0 and will now be
744 updated each release.
747 Resources will now be compressed using multiple threads by default.
748 (This applies to `imagex capture', `imagex append', and `imagex
751 Some performance improvements in mounted WIMs.
753 More progress information is shown when capturing a WIM.
756 Lots of minor fixes, code cleanups, and some documentation updates.
757 Nothing in particular is really noteworthy.
760 LZX and XPRESS compression improvements.
762 Fixed calculation of Directory Count, File Count, Total Bytes, and Hard
763 Link Bytes of the WIM.
766 Fixed bug when capturing NTFS file with multiple named data streams.
768 Internally, we are now using inode structures, even though these don't
769 appear literally in the WIM file. This simplifies some of the code
770 (mainly for WIM mounting) and likely fixed a few problems, although it
774 Fixed problem when exporting images from XPRESS to LZX compressed WIM or
778 Enough changes to call it version 1.0.0!
780 Capturing a WIM directly from a NTFS volume, and applying a WIM directly
781 to a NTFS volume, is now supported.
783 Hard links and symbolic links have much improved support. They are
784 supported for WIM capture, WIM application, and mounted WIMs (you can
785 even make them on read-write mounted WIMs).
787 Alternate data streams are now supported on mounted WIMs through an
788 xattr or a Windows-style stream interface. Also they are supported when
789 capturing a WIM from NTFS or applying a WIM to NTFS.
791 Split WIMs are better supported. You may now apply an image directly
792 from a split WIM, mount an image from a split WIM read-only, or export
793 an image from a split WIM.
795 Using a capture configuration file is now supported (but not fully yet).
797 SHA1 message digests are checked in more places, so we can make sure
798 applied and captured data is correct.
800 Man pages have been updated and consolidated.
803 Fixed segfault when unmounting read-only WIM.
806 Support for joining and splitting WIMs.
807 Also, security data is now preserved by default.
810 Can now build with older gcc and system headers, like on CentOS 5.
813 Fixed bug that made it impossible to overwrite files in read-write
817 Write byte-order mark before WIM XML data. (imagex.exe requires this to