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.
32 Improved the LZX compressor. It is now 15-20% faster than before and
33 provides a slightly better compression ratio.
35 Improved the LZMS compressor. It now provides a compression ratio
36 slightly better than WIMGAPI while still being faster and using slightly
39 The compression chunk size in solid resources, e.g. when capturing or
40 exporting a WIM file using the '--solid' option, now defaults to 64 MiB
41 (67108864 bytes) instead of 32 MiB (33554432 bytes). This provides a
42 better compression ratio and is the same value that WIMGAPI uses. The
43 memory usage is less than 50% higher than wimlib v1.7.4 and is slightly
44 lower than WIMGAPI's memory usage, but if it is too much, it is still
45 possible to choose a lower value, e.g. with the '--solid-chunk-size'
46 option to wimlib-imagex.
48 The '--chunk-size' and '--solid-chunk-size' options to wimlib-imagex now
49 accept the 'K', 'M', and 'G' suffixes.
51 Files are now sorted by name extension when creating a solid WIM file.
53 Fixed various issues related to capture/apply of EFS-encrypted files on
56 The file list printed by 'wimdir' is now sorted by the platform-specific
57 case sensitivity setting, rather than always case sensitively. This
58 also affects the library function wimlib_iterate_dir_tree().
60 On Windows, some error and warning messages have been improved.
63 The Windows binary distribution no longer contains third party DLLs.
64 These dependencies are instead compiled directly into the libwim DLL.
66 Added more fixes for wimlib on non-x86 architectures such as ARM.
68 Extracting files to a Windows PE in-memory filesystem no longer fails if
69 the target files do not yet exist.
71 Improved the performance of XPRESS compression and LZMS decompression.
73 Enabled SSSE3 accelerated SHA-1 computation in x86_64 Windows builds.
74 It will automatically be faster on newer Intel and AMD processors.
76 Removed the --with-imagex-progname and --enable-more-assertions
80 Fix for very slow export from solid WIM / ESD files.
82 Fix for LZX and LZMS algorithms on non-x86 architectures, such as ARM.
84 New progress message: WIMLIB_PROGRESS_MSG_HANDLE_ERROR. Applications
85 may use this to treat some types of errors as non-fatal.
87 The library now permits making in-memory changes to a WIMStruct backed
88 by a read-only WIM file.
90 Fixes for "WIMBoot" extraction mode (Windows only):
92 When not using the WOF driver, extraction no longer fails if the
93 disk containing the WIM file has too many partitions.
95 When matching patterns in [PrepopulateList], all hard links of
96 each file are now considered.
98 The system registry files are now automatically treated as being
101 Added a hack to try to work around an intermittent bug in
102 Microsoft's WOF (Windows Overlay Filesystem) driver.
105 Made more improvements to the XPRESS, LZX, and LZMS compressors.
107 A number of improvements to the Windows port:
109 Fixes for setting short filenames.
111 Faster "WIMBoot" extraction.
113 Updated and slimmed down the dependent DLLs.
115 ACL inheritence bits are now restored.
117 Mandatory integrity labels are now backed up and restored.
119 Added a workaround for an issue where in rare cases, wimlib could create
120 a compressed data stream that could not be read correctly by Windows
121 after an extraction in "WIMBoot" mode.
124 Added file count progress data for
125 WIMLIB_PROGRESS_MSG_EXTRACT_FILE_STRUCTURE and
126 WIMLIB_PROGRESS_MSG_EXTRACT_METADATA.
128 Added support for testing file exclusions via the user-provided
131 Some documentation improvements.
133 Made some clarifications to the license text in the COPYING file.
136 Made more improvements to the XPRESS, LZX, and LZMS compressors.
138 The default compression mode for wimcapture is now LZX compression in
139 its default mode, which is the same as '--compress=maximum'.
141 You can now specify an optional integer compression level to the
142 '--compress' option; e.g. '--compress=lzx:75'.
144 Made a minor change to the LZMS compressor and decompressor to fix an
145 incompatibility with the Microsoft implementation. In the unlikely
146 event that you created an LZMS-compressed WIM with wimlib v1.7.0 or
147 earlier and a checksum error is reported when extracting files from it
148 with wimlib v1.7.1, decompress it with v1.7.0 then compress it with
151 Added 'verify' subcommand to wimlib-imagex.
153 Notable library changes:
155 Custom compressor parameters have been removed from the library
156 in favor of the simpler level-based API.
158 Decompressor parameters have been removed entirely.
160 Library users can now specify a custom file for warning and
161 error messages to be sent to, rather than the default of
164 New progress messages:
165 WIMLIB_PROGRESS_MSG_EXTRACT_FILE_STRUCTURE,
166 WIMLIB_PROGRESS_MSG_EXTRACT_METADATA.
168 New function: wimlib_verify_wim().
171 Improved compression, decompression, and extraction performance.
173 Improved compatibility with version 3584 WIM / ESD files:
174 - Add support for reading and writing multiple solid blocks per
175 archive, which WIMGAPI/DISM can create when appending an image.
176 - Correctly create solid blocks larger than 4 GiB.
178 'add' commands passed to wimupdate will now replace existing
179 nondirectory files by default. Use the --no-replace option to get the
182 The license for the library now contains an exception that allows using
183 it under the LGPL. See the COPYING file for details.
185 In reparse-point fixup mode (the default for capture), symbolic links
186 and junctions that point outside the tree being captured are no longer
187 excluded from capture.
189 Added support for "WIMBoot" capture and extraction. See the
190 documentation for the new '--wimboot' option to wimcapture and wimapply
191 for more information.
193 On UNIX-like systems, you can now backup and restore device nodes, named
194 pipes, and sockets. In addition, 32-bit user and group IDs are now
197 The way that UNIX data is stored in WIM files has been changed. If you
198 captured any WIMs with the --unix-data option, to upgrade them you'll
199 need to apply them with --unix-data using wimlib-imagex v1.6.2, then
200 re-capture them with --unix-data using this version.
202 wimlib now understands tagged metadata items, such as object IDs, that
203 can be stored in WIM directory entries.
205 Removed the --hardlink and --symlink options to wimapply, since I don't
206 think they are too useful and they got in the way of improving the code.
208 WIMs will now retain their GUIDs when rebuilt (e.g. with wimoptimize).
210 The 'mkwinpeimg' script now supports writing the ISO image to standard
213 The <ARCH> element in WIM XML data is now exported correctly.
215 On Windows, sparse file attributes are no longer set on extracted files.
216 Oddly enough, this actually saves disk space in some cases.
218 On UNIX, configuring with --disable-xattr or --enable-xattr is no longer
219 supported. Mounting WIM images now always requires extended attribute
220 support. Use --without-fuse to disable support for mounting WIM images;
221 this will also disable the need for extended attribute support.
223 Configuring with --enable-ssse3-sha1 now works correctly.
225 The shared library version has been bumped up. The main
226 incompatibilities are:
228 - WIMLIB_COMPRESSION_TYPE_XPRESS is now 1 and
229 WIMLIB_COMPRESSION_TYPE_LZX is now 2 (so it's the same as
232 - User-provided progress functions are now registered using a
233 separate function, wimlib_register_progress_function(). The
234 'progress_func' argument to many functions no longer exists.
236 - The return value from user-provided progress functions is now
239 - A context argument has been added to the prototype of
240 user-provided progress functions.
242 - 'struct wimlib_capture_config' has been removed. The library
243 now takes the path to the configuration file directly. This
244 affects wimlib_add_image(), wimlib_add_image_multisource(),
245 and wimlib_update_image(). However, a NULL value passed in
246 the argument retains the same meaning.
248 - Removed deprecated functions: some (de)compression functions,
249 wimlib_extract_files(), and wimlib_print_metadata().
251 - Removed extraction flags: WIMLIB_EXTRACT_FLAG_HARDLINK,
252 WIMLIB_EXTRACT_FLAG_SYMLINK, WIMLIB_EXTRACT_FLAG_FILE_ORDER,
253 and WIMLIB_EXTRACT_FLAG_SEQUENTIAL.
255 - Removed some progress messages:
256 WIMLIB_PROGRESS_MSG_APPLY_TIMESTAMPS,
257 WIMLIB_PROGRESS_MSG_EXTRACT_DIR_STRUCTURE_BEGIN,
258 WIMLIB_PROGRESS_MSG_EXTRACT_DIR_STRUCTURE_END. Numbering
261 - Removed some error codes. Numbering stays the same.
263 - Replaced WIMLIB_UNMOUNT_FLAG_LAZY with
264 WIMLIB_UNMOUNT_FLAG_FORCE.
266 - WIM paths passed to progress functions now have a leading
270 Case-insensitive comparisons of strings (e.g. filenames) containing
271 UTF-16 codepoints above 32767 are now done correctly.
273 Fixed build failure on Mac OS X.
275 wimunmount now provides the '--new-image' option to cause changes to a
276 read-write mounted image to be committed as a new image rather than as
277 an update of the mounted image. (The corresponding new library flag is
278 WIMLIB_UNMOUNT_FLAG_NEW_IMAGE.)
280 The LZMS ("recovery") compression chunk size, or "dictionary size", may
281 now be up to 1 GiB (1,073,741,824 bytes).
283 The performance of LZX ("maximum") and LZMS ("recovery") compression
284 with large chunk sizes has been slightly improved.
287 Stored files with size exactly 4 GiB (4,294,967,296 bytes) are now
288 decompressed correctly.
290 Fixed a bug in the LZX compressor introduced in v1.5.3. The bug
291 occurred in an unlikely case, and due to validity checks it did not
292 affect successfully created archives.
294 Fixed a minor compatibility issue with the LZMS compressor and
295 decompressor. This is *not* the default compression type and was only
296 introduced in v1.6.0. In the unlikely event that you created an
297 LZMS-compressed WIM with v1.6.0 and a checksum error is reported when
298 applying it with v1.6.1, decompress it with v1.6.0 then compress it with
301 Memory usage for LZMS and LZX compression has been decreased.
303 wimextract now allows wildcard characters in paths specified on the
304 command line. Also, the '--strict-wildcards' option has been removed
305 and replaced with the inverse option '--nullglob'. See the
306 documentation for wimextract for more details and changes.
308 The wimlib_extract_files() function is now considered deprecated in
309 favor of wimlib_extract_paths().
311 Fixed more permissions problems when extracting files on Windows.
313 A new '--no-attributes' option has been added to wimapply and
314 wimextract. The library flag is WIMLIB_EXTRACT_FLAG_NO_ATTRIBUTES.
316 The default chunk size is now set correctly when changing the
317 compression type of a WIM, for example with 'wimoptimize'.
319 The '--metadata' option to wiminfo has been replaced with the
320 '--detailed' option to wimdir.
322 In relevant wimlib-imagex commands, '--solid' may now be used as an
323 alias for '--pack-streams'.
326 Support for extracting and updating the new version 3584 WIMs has been
327 added. These WIMs typically pack many streams ("files") together into a
328 single compressed resource, thereby saving space. This degrades the
329 performance of random access (such as that which occurs on a mounted
330 image), but optimizations have been implemented for extraction. These
331 new WIM files also typically use a new compression format (LZMS), which
332 is similar to LZMA and can offer a better compression ratio than LZX.
333 These new WIM files can be created using `wimcapture' with
334 the '--compress=lzms --pack-streams' options. Note: this new WIM format
335 is used by the Windows 8 web downloader, but important segments of the
336 raw '.esd' files are encrypted, so wimlib will not be able to extract
337 such files until they are first decrypted.
339 wimlib now supports extracting files and directories from a WIM image
340 based on a "listfile" that itself contains the list of paths to extract.
341 For `wimextract', the syntax is to specify @LISTFILE instead of a PATH,
342 and for the library itself, the new APIs are wimlib_extract_pathlist()
343 and wimlib_extract_paths(). Path globs containing wildcard characters
346 For searching WIM files, wimlib now has configurable case sensitivity.
347 The default on Windows is still case-insensitive and the default on
348 UNIX-like systems is still case-sensitive, but this can be overridden
349 on either platform through flags to wimlib_global_init(). For
350 `wimlib-imagex', the environmental variable WIMLIB_IMAGEX_IGNORE_CASE
351 can be set to 1 or 0 for case-insensitive or case-sensitive behavior,
354 Support for compression chunk sizes greater than the default of 32768
355 bytes has been added. A larger chunk size typically results in a better
356 compression ratio. However, the MS implementation is seemingly not
357 compatible with all chunk sizes, especially for LZX compression, so the
358 defaults remain unchanged, with the exception of the new LZMS-compressed
359 WIMs, which use a larger chunk size by default.
361 The compression/decompression API exported by wimlib has been changed.
362 Now one set of functions handles all supported compression formats.
364 `wimcapture' and `wimappend' will now display the progress of scanning
365 the directory tree to capture, in addition to the progress of writing
366 data to the WIM. The '--verbose' option no longer does anything. The
367 library API change for this is the addition of several members to
368 `struct wimlib_progress_info_scan' available to progress callbacks.
370 `mkwinpeimg' now correctly handles the '--start-script' option when the
371 start script is not in the working directory.
373 Sequential extraction, previously requested by using
374 WIMLIB_EXTRACT_FLAG_SEQUENTIAL, is now the default.
375 WIMLIB_EXTRACT_FLAG_FILE_ORDER can be used to get the old default
376 behavior (extract in file order).
379 The new LZX compressor added in v1.5.2 has been improved and is now
380 enabled by default, except when `wimcapture' or `wimappend' is run
381 *without* the '--compress' option, in which case the faster LZX
382 compressor is used (the same as before). This behavior is reasonably
383 consistent with ImageX which actually uses "fast" (XPRESS) compression
384 by default. In those cases, use '--compress=maximum' to explicitly
385 capture a WIM image using the new (slower but better) LZX compressor.
387 The '--compress-slow' option still exists to `wimlib-imagex optimize',
388 but its new behavior is to tweak the new LZX compressor even more to
389 produce an even better compression ratio at the cost of more time spent
392 `wimlib-imagex optimize' now supports the '--compress=TYPE' option,
393 which recompresses the WIM file using the specified compression TYPE.
394 The new library API function used for this is
395 wimlib_set_output_compression_type().
397 Added the wimlib_get_xml_data() function to allow library clients to
398 easily retrieve the raw XML data from a WIM file if needed.
400 Fixed a bug that could cause an error code to be incorrectly returned
401 when writing XML data containing a <WINDOWS> element.
403 Mounted WIM images will now correctly show the default file stream even
404 if appears in the alternate data stream entries of the corresponding WIM
408 Added a new experimental LZX compressor which can be enabled by passing
409 '--compress-slow' to `wimlib-imagex capture' or `wimlib-imagex
410 optimize'. (The latter is only applicable if the WIM is already
411 LZX-compressed and the '--recompress' option is also given.) The
412 experimental compressor is much slower but compresses the data slightly
413 more --- currently usually to within a fraction of a percent of the
414 results from WIMGAPI/ImageX.
416 A workaround has been added for compatibility with versions of WinPE
417 that interpret alternate data stream entries in the boot WIM
420 An alignment bug that caused a crash in the LZX decompressor on some
423 wimlib now attempts to clear the WIM_HDR_FLAG_WRITE_IN_PROGRESS flag in
424 the WIM header when restoring the previous state of a WIM it failed to
427 Added a workaround to avoid an access denied error on Windows when
428 replacing a WIM file that another process has opened.
431 wimlib can now open WinPE WIMs from WAIK v2.1, which had a quirk that
432 needed to be handled.
434 A bug in the interpretation of negative IMAGE indices in the
435 --update-of=[WIMFILE:]IMAGE option to `wimlib-imagex capture' and
436 `wimlib-imagex append' has been fixed.
438 A workaround has been added to successfully apply security descriptors
439 with empty DACLs when the NTFS-3g apply mode is being used with NTFS-3g
440 2013.1.13 or earlier.
442 `wimlib-imagex capture' can now accept the '--delta-from' option
446 Added support for "pipable" WIMs. Pipable WIMs allow capturing images
447 to standard output and applying images from standard input, but they are
448 not compatible with Microsoft's software and are not created by default.
449 See the documentation for --pipable flag of `wimlib-imagex capture' for
452 To better support incremental backups, added support for declaring an
453 image as a modified form of another image. See the documentation for
454 the '--update-of' option of `wimlib-imagex append' and `wimlib-imagex
457 Added supported for "delta" WIMs. See the documentation for the
458 '--delta-from' option of `wimlib-imagex capture'.
460 The library support for managing split WIMs has been changed to support
461 other arrangements, such as delta WIMs, and be easier to use. This
462 change is visible in `wimlib-imagex', which also can now accept the
463 '--ref' option multiple times, and also now supports "delta" WIMs as
466 wimlib now preserves WIM integrity tables by default, even if
467 WIMLIB_WRITE_FLAG_CHECK_INTEGRITY is not specified. This changes the
468 behavior of `wimlib-imagex' whenever the WIM being operated on contains
469 an integrity table and the '--check' option is not specified.
471 `wimlib-imagex capture' now creates LZX-compressed WIMs by default
472 (when --compress is not specified). This provides the best compression
473 ratio by default, which is usually what is desired, at a cost of some
476 `wimlib-imagex' now supports being invoked as wimCOMMAND, where COMMAND
477 is the command as in `wimlib-imagex COMMAND'; for example, it can be
478 invoked as `wimapply' as an alternative to `wimlib-imagex apply'. The
479 appropriate hard links are created in UNIX installations of
480 `wimlib-imagex', while for the Windows distribution of `wimlib-imagex',
481 batch files that emulate this behavior are generated.
483 Security descriptors are now extracted correctly on Windows.
485 Fixed archiving DOS names in NTFS-3g capture mode.
487 The extraction code has been rewritten and it will now be easier to
488 support new features on all supported backends (currently Win32, UNIX,
489 and NTFS-3g). For example, hard-linked extraction mode (--hardlink) is
490 now supported on all backends, not just UNIX.
492 `mkwinpeimg' now supports grabbing files from the WAIK supplement rather
493 than the WAIK itself.
495 wimlib_global_init() now, by default, attempts to acquire additional
496 privileges on Windows, so library clients need not do this.
498 This update bumps the shared library version number up to 9, since it is
499 not binary compatibible with previous releases.
502 Fixed bug in `wimlib-imagex export' that made it impossible to export an
503 image from a WIM that is readonly at the filesystem level.
505 Return error code rather than segfaulting when trying to list files from
506 a non-first part of a split WIM.
508 Joining a WIM will now preserve the RP_FIX and READONLY flags.
511 On Windows, paths given to wimlib-imagex are now treated case
514 Improved behavior regarding invalid filenames; in particular, on
515 Windows, wimlib-imagex will, when extracting, now omit (with an option
516 to override this default) filenames differing only in case, or filenames
517 containing characters not valid on Windows.
519 On Windows, wimlib now supports capturing and extracting long paths
520 (longer than the so-called MAX_PATH).
522 On Windows, `wimlib-imagex update' now acquires proper privileges when
523 running as an Administrator.
525 `wimlib-imagex update' will now complain if no image is specified when
526 trying to update a multi-image WIM.
528 `wimlib-imagex update' now supports specifying a single update command
529 directly on the command line using the --command option.
531 wimlib-imagex will now choose different units for progress messages,
532 depending on the amount of data that needs to be processed.
534 `wimlib-imagex append' will now generate a unique WIM image name if no
535 name is specified and the defaulted name already exists in the WIM.
537 wimlib now allows you to create unnamed WIM images, which can then only
538 be referred to by index.
540 wimlib now allows you to explicitly declare you want write access to a
541 WIM by providing the WIMLIB_OPEN_FLAG_WRITE_ACCESS flag to
544 wimlib now respects the WIM_HDR_FLAG_READONLY flag when set in the WIM
547 Progress callbacks have been added to wimlib's wimlib_update_image()
550 Added wimlib_get_wim_info(), wimlib_set_wim_info(),
551 wimlib_iterate_dir_tree(), and wimlib_iterate_lookup_table() functions
554 NTFS-3g capture now only warns about two conditions previously treated
557 Fixed a couple issues with using wimlib-imagex on UDF filesystems on
560 wimlib now correctly detects and returns an error when reading a WIM
561 image with a cyclic directory structure. (Fun fact: such a WIM will
562 crash Microsoft's software.)
565 Added new "extract" and "update" subcommands to wimlib-imagex, along
566 with associated APIs in the library. These commands are intended mainly
567 for Windows use but can be used on UNIX as well.
569 Many documentation improvements.
571 Fixed a bug in the Windows build where relative symbolic links were not
572 captured in reparse-point fixup mode.
574 Fixed a bug in the Windows build where file handles were left open to
575 the WIM file, causing `wimlib_imagex optimize' to fail in some cases.
577 Fixed a bug in the Windows build of wimlib-imagex where globbing
578 split-WIM parts could cause the program to crash.
580 Fixed a bug where the creation time of WIM images would be shown instead
581 of the last modification time.
583 With the Windows build it is now possible to restore a WIM containing
584 symbolic links as a non-Administrator; however you will receive warnings
585 about not being able to extract the symbolic links.
588 Capturing a WIM image should now be significantly faster in most cases
589 due to improved use of the operating system's cache and avoiding reading
590 files twice whenever possible.
592 The Windows build should now work on Windows XP.
594 The Windows build now supports capturing and restoring hidden,
595 compressed, sparse, and encrypted files.
597 The Windows build now supports capturing and applying WIM images from
598 filesystems other than NTFS (with some reduced functionality).
600 The Windows build now extracts short names correctly.
602 Added support for "reparse-point" fixups (i.e. fixing up of symbolic
603 links). See docs for --rpfix and --norpfix flags of `wimlib-imagex
604 capture' and `wimlib-imagex apply'.
606 The performance of splitting and joining WIMs should be slightly
609 The LZX and XPRESS compression and decompression functions are now
610 exported from the library.
613 Improvements and bugfixes for the Windows build.
615 Added --strict-acls options.
617 Fixed the way that wimlib determines the order of images in the WIM.
620 Since wimlib can now be used on Windows, wimlib's implementation of
621 ImageX has been renamed to wimlib-imagex to avoid confusion with
622 Microsoft's implementation of ImageX, which would have the same file
623 name ("imagex.exe"). If you really don't like this you can pass the
624 --with-imagex-progname option to `configure' to choose a different name,
625 or even simply rename the binary yourself (but the former way will
626 configure the man pages to use the chosen name).
628 Various bugs fixed in the Windows build. Mainly to do with capturing
629 and restoring alternate data streams correctly in weird cases, and
630 requesting the correct privileges when opening files. Also added the
631 --noacls options to wimlib-imagex capture, append, and apply.
633 Windows build again: FindFirstStreamW() and FindNextStreamW() are now
634 dynamically loaded, so this may make the library compatible with Windows
635 XP (however, there may still be other problems).
638 Added experimental support for native Windows builds. Binaries can be
639 downloaded from the SourceForge page.
641 --source-list option added to `imagex capture' and `imagex append'.
643 Better support for different character encodings.
646 Storing UNIX file owners, groups, and modes in WIM images is now
647 possible using `imagex capture' with the --unix-data flag.
649 Minor bug fixes and documentation fixes.
652 NTFS capture: Fixed capturing duplicate reparse points.
654 NTFS capture: Capture first unnamed stream if there are more than one
655 (print warning instead of error).
657 Allow multiple test cases to execute concurrently (e.g. make -j2 check).
660 Added --arch switch to mkwinpeimg script to support getting AMD64 WinPE
663 Update to work with ntfs-3g version 2013.1.13.
666 Fixed truncating file to shorter but non-zero length on read-write
669 Various code cleanups and minor documentation fixes.
672 LZX and XPRESS decompression have received some additional optimizations
673 and should now be even faster. (Although, they were already pretty
674 fast--- much faster than typical I/O speeds.)
676 Fixed a bug introduced in v1.2.1 that would cause a directory tree
677 containing hard links to be captured incorrectly in some cases.
680 By default, unmounting a read-write mounted WIM with 'imagex unmount
681 --commit' will now change the WIM in-place without needing to write the
682 entire WIM again. Use 'imagex unmount --commit --rebuild' to get the
685 'imagex unmount' no longer has a hard-coded limit of 10 minutes to wait
686 for a response from the daemon servicing the mounted WIM. Instead,
687 every second 'imagex unmount' will check if the daemon is still alive,
688 and keep waiting if so, otherwise terminate with an error.
690 'imagex unmount --commit' on a read-write mounted WIM will now print
691 progress information regarding the writing of new or modified streams
692 the WIM, just like when capturing or appending a WIM.
694 A small change has been made to XPRESS compression and it should improve
695 the compression ratio slightly.
697 A change was made that may improve performance slightly when applying a
698 WIM image to a NTFS volume.
700 Microsoft has managed to introduce even more bugs into their software,
701 and now the WIMs for Windows 8 have incorrect (too low) reference counts
702 for some streams. This is unsafe because such streams can be removed
703 when they are in actuality still referenced in the WIM (perhaps by a
704 different image). wimlib will now work around this problem by fixing
705 the stream reference counts. This is only done when wimlib_delete_image() is
706 called ('imagex delete') or when wimlib_mount_image() is called with
707 WIMLIB_MOUNT_FLAG_READWRITE ('imagex mountrw'). Please note that this
708 requires reading the metadata for all images in the WIM, so this will
709 make these operations noticably slower on WIMs with multiple images.
711 Various other bugfixes.
714 Appending images to a WIM is now be done by default without re-building
715 the whole WIM. Use the --rebuild flag to get the old behavior (which
716 was to re-build the entire WIM when a new image is appended).
718 A new command `imagex optimize' is now available to manually re-build a
719 WIM that has wasted space due to repeated appends.
721 Progress information has been improved, and now arbitrary callback
722 functions can be used to show the progress of a WIM operation.
724 A possible bug with changing the bootable image of a WIM was fixed.
726 Some advisory locking is now done to prevent two processes from
727 modifying a WIM at the same time (but only in some cases). For example,
728 you cannot mount two images from a WIM read-write at the same time.
730 Some functions have been reorganized:
731 * wimlib_mount() renamed to wimlib_mount_image().
732 * wimlib_unmount() renamed to wimlib_unmount_image().
733 * wimlib_overwrite_xml_and_header() removed as
734 wimlib_overwrite() suffices now.
735 * wimlib_apply_image_to_ntfs_volume() removed as
736 wimlib_extract_image() suffices now.
737 * wimlib_add_image_from_ntfs_volume() removed as
738 * wimlib_add_image() suffices now.
740 Previously, the soname of libwim.so has been 0.0.0, despite many
741 interface changes. The soname is now updated to 1.0.0 and will now be
742 updated each release.
745 Resources will now be compressed using multiple threads by default.
746 (This applies to `imagex capture', `imagex append', and `imagex
749 Some performance improvements in mounted WIMs.
751 More progress information is shown when capturing a WIM.
754 Lots of minor fixes, code cleanups, and some documentation updates.
755 Nothing in particular is really noteworthy.
758 LZX and XPRESS compression improvements.
760 Fixed calculation of Directory Count, File Count, Total Bytes, and Hard
761 Link Bytes of the WIM.
764 Fixed bug when capturing NTFS file with multiple named data streams.
766 Internally, we are now using inode structures, even though these don't
767 appear literally in the WIM file. This simplifies some of the code
768 (mainly for WIM mounting) and likely fixed a few problems, although it
772 Fixed problem when exporting images from XPRESS to LZX compressed WIM or
776 Enough changes to call it version 1.0.0!
778 Capturing a WIM directly from a NTFS volume, and applying a WIM directly
779 to a NTFS volume, is now supported.
781 Hard links and symbolic links have much improved support. They are
782 supported for WIM capture, WIM application, and mounted WIMs (you can
783 even make them on read-write mounted WIMs).
785 Alternate data streams are now supported on mounted WIMs through an
786 xattr or a Windows-style stream interface. Also they are supported when
787 capturing a WIM from NTFS or applying a WIM to NTFS.
789 Split WIMs are better supported. You may now apply an image directly
790 from a split WIM, mount an image from a split WIM read-only, or export
791 an image from a split WIM.
793 Using a capture configuration file is now supported (but not fully yet).
795 SHA1 message digests are checked in more places, so we can make sure
796 applied and captured data is correct.
798 Man pages have been updated and consolidated.
801 Fixed segfault when unmounting read-only WIM.
804 Support for joining and splitting WIMs.
805 Also, security data is now preserved by default.
808 Can now build with older gcc and system headers, like on CentOS 5.
811 Fixed bug that made it impossible to overwrite files in read-write
815 Write byte-order mark before WIM XML data. (imagex.exe requires this to