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.
22 Improved the LZX compressor. It is now 15-20% faster than before and
23 provides a slightly better compression ratio.
25 Improved the LZMS compressor. It now provides a compression ratio
26 slightly better than WIMGAPI while still being faster and using slightly
29 The compression chunk size in solid resources, e.g. when capturing or
30 exporting a WIM file using the '--solid' option, now defaults to 64 MiB
31 (67108864 bytes) instead of 32 MiB (33554432 bytes). This provides a
32 better compression ratio and is the same value that WIMGAPI uses. The
33 memory usage is less than 50% higher than wimlib v1.7.4 and is slightly
34 lower than WIMGAPI's memory usage, but if it is too much, it is still
35 possible to choose a lower value, e.g. with the '--solid-chunk-size'
36 option to wimlib-imagex.
38 The '--chunk-size' and '--solid-chunk-size' options to wimlib-imagex now
39 accept the 'K', 'M', and 'G' suffixes.
41 Files are now sorted by name extension when creating a solid WIM file.
43 Fixed various issues related to capture/apply of EFS-encrypted files on
46 The file list printed by 'wimdir' is now sorted by the platform-specific
47 case sensitivity setting, rather than always case sensitively. This
48 also affects the library function wimlib_iterate_dir_tree().
50 On Windows, some error and warning messages have been improved.
53 The Windows binary distribution no longer contains third party DLLs.
54 These dependencies are instead compiled directly into the libwim DLL.
56 Added more fixes for wimlib on non-x86 architectures such as ARM.
58 Extracting files to a Windows PE in-memory filesystem no longer fails if
59 the target files do not yet exist.
61 Improved the performance of XPRESS compression and LZMS decompression.
63 Enabled SSSE3 accelerated SHA-1 computation in x86_64 Windows builds.
64 It will automatically be faster on newer Intel and AMD processors.
66 Removed the --with-imagex-progname and --enable-more-assertions
70 Fix for very slow export from solid WIM / ESD files.
72 Fix for LZX and LZMS algorithms on non-x86 architectures, such as ARM.
74 New progress message: WIMLIB_PROGRESS_MSG_HANDLE_ERROR. Applications
75 may use this to treat some types of errors as non-fatal.
77 The library now permits making in-memory changes to a WIMStruct backed
78 by a read-only WIM file.
80 Fixes for "WIMBoot" extraction mode (Windows only):
82 When not using the WOF driver, extraction no longer fails if the
83 disk containing the WIM file has too many partitions.
85 When matching patterns in [PrepopulateList], all hard links of
86 each file are now considered.
88 The system registry files are now automatically treated as being
91 Added a hack to try to work around an intermittent bug in
92 Microsoft's WOF (Windows Overlay Filesystem) driver.
95 Made more improvements to the XPRESS, LZX, and LZMS compressors.
97 A number of improvements to the Windows port:
99 Fixes for setting short filenames.
101 Faster "WIMBoot" extraction.
103 Updated and slimmed down the dependent DLLs.
105 ACL inheritence bits are now restored.
107 Mandatory integrity labels are now backed up and restored.
109 Added a workaround for an issue where in rare cases, wimlib could create
110 a compressed data stream that could not be read correctly by Windows
111 after an extraction in "WIMBoot" mode.
114 Added file count progress data for
115 WIMLIB_PROGRESS_MSG_EXTRACT_FILE_STRUCTURE and
116 WIMLIB_PROGRESS_MSG_EXTRACT_METADATA.
118 Added support for testing file exclusions via the user-provided
121 Some documentation improvements.
123 Made some clarifications to the license text in the COPYING file.
126 Made more improvements to the XPRESS, LZX, and LZMS compressors.
128 The default compression mode for wimcapture is now LZX compression in
129 its default mode, which is the same as '--compress=maximum'.
131 You can now specify an optional integer compression level to the
132 '--compress' option; e.g. '--compress=lzx:75'.
134 Made a minor change to the LZMS compressor and decompressor to fix an
135 incompatibility with the Microsoft implementation. In the unlikely
136 event that you created an LZMS-compressed WIM with wimlib v1.7.0 or
137 earlier and a checksum error is reported when extracting files from it
138 with wimlib v1.7.1, decompress it with v1.7.0 then compress it with
141 Added 'verify' subcommand to wimlib-imagex.
143 Notable library changes:
145 Custom compressor parameters have been removed from the library
146 in favor of the simpler level-based API.
148 Decompressor parameters have been removed entirely.
150 Library users can now specify a custom file for warning and
151 error messages to be sent to, rather than the default of
154 New progress messages:
155 WIMLIB_PROGRESS_MSG_EXTRACT_FILE_STRUCTURE,
156 WIMLIB_PROGRESS_MSG_EXTRACT_METADATA.
158 New function: wimlib_verify_wim().
161 Improved compression, decompression, and extraction performance.
163 Improved compatibility with version 3584 WIM / ESD files:
164 - Add support for reading and writing multiple solid blocks per
165 archive, which WIMGAPI/DISM can create when appending an image.
166 - Correctly create solid blocks larger than 4 GiB.
168 'add' commands passed to wimupdate will now replace existing
169 nondirectory files by default. Use the --no-replace option to get the
172 The license for the library now contains an exception that allows using
173 it under the LGPL. See the COPYING file for details.
175 In reparse-point fixup mode (the default for capture), symbolic links
176 and junctions that point outside the tree being captured are no longer
177 excluded from capture.
179 Added support for "WIMBoot" capture and extraction. See the
180 documentation for the new '--wimboot' option to wimcapture and wimapply
181 for more information.
183 On UNIX-like systems, you can now backup and restore device nodes, named
184 pipes, and sockets. In addition, 32-bit user and group IDs are now
187 The way that UNIX data is stored in WIM files has been changed. If you
188 captured any WIMs with the --unix-data option, to upgrade them you'll
189 need to apply them with --unix-data using wimlib-imagex v1.6.2, then
190 re-capture them with --unix-data using this version.
192 wimlib now understands tagged metadata items, such as object IDs, that
193 can be stored in WIM directory entries.
195 Removed the --hardlink and --symlink options to wimapply, since I don't
196 think they are too useful and they got in the way of improving the code.
198 WIMs will now retain their GUIDs when rebuilt (e.g. with wimoptimize).
200 The 'mkwinpeimg' script now supports writing the ISO image to standard
203 The <ARCH> element in WIM XML data is now exported correctly.
205 On Windows, sparse file attributes are no longer set on extracted files.
206 Oddly enough, this actually saves disk space in some cases.
208 On UNIX, configuring with --disable-xattr or --enable-xattr is no longer
209 supported. Mounting WIM images now always requires extended attribute
210 support. Use --without-fuse to disable support for mounting WIM images;
211 this will also disable the need for extended attribute support.
213 Configuring with --enable-ssse3-sha1 now works correctly.
215 The shared library version has been bumped up. The main
216 incompatibilities are:
218 - WIMLIB_COMPRESSION_TYPE_XPRESS is now 1 and
219 WIMLIB_COMPRESSION_TYPE_LZX is now 2 (so it's the same as
222 - User-provided progress functions are now registered using a
223 separate function, wimlib_register_progress_function(). The
224 'progress_func' argument to many functions no longer exists.
226 - The return value from user-provided progress functions is now
229 - A context argument has been added to the prototype of
230 user-provided progress functions.
232 - 'struct wimlib_capture_config' has been removed. The library
233 now takes the path to the configuration file directly. This
234 affects wimlib_add_image(), wimlib_add_image_multisource(),
235 and wimlib_update_image(). However, a NULL value passed in
236 the argument retains the same meaning.
238 - Removed deprecated functions: some (de)compression functions,
239 wimlib_extract_files(), and wimlib_print_metadata().
241 - Removed extraction flags: WIMLIB_EXTRACT_FLAG_HARDLINK,
242 WIMLIB_EXTRACT_FLAG_SYMLINK, WIMLIB_EXTRACT_FLAG_FILE_ORDER,
243 and WIMLIB_EXTRACT_FLAG_SEQUENTIAL.
245 - Removed some progress messages:
246 WIMLIB_PROGRESS_MSG_APPLY_TIMESTAMPS,
247 WIMLIB_PROGRESS_MSG_EXTRACT_DIR_STRUCTURE_BEGIN,
248 WIMLIB_PROGRESS_MSG_EXTRACT_DIR_STRUCTURE_END. Numbering
251 - Removed some error codes. Numbering stays the same.
253 - Replaced WIMLIB_UNMOUNT_FLAG_LAZY with
254 WIMLIB_UNMOUNT_FLAG_FORCE.
256 - WIM paths passed to progress functions now have a leading
260 Case-insensitive comparisons of strings (e.g. filenames) containing
261 UTF-16 codepoints above 32767 are now done correctly.
263 Fixed build failure on Mac OS X.
265 wimunmount now provides the '--new-image' option to cause changes to a
266 read-write mounted image to be committed as a new image rather than as
267 an update of the mounted image. (The corresponding new library flag is
268 WIMLIB_UNMOUNT_FLAG_NEW_IMAGE.)
270 The LZMS ("recovery") compression chunk size, or "dictionary size", may
271 now be up to 1 GiB (1,073,741,824 bytes).
273 The performance of LZX ("maximum") and LZMS ("recovery") compression
274 with large chunk sizes has been slightly improved.
277 Stored files with size exactly 4 GiB (4,294,967,296 bytes) are now
278 decompressed correctly.
280 Fixed a bug in the LZX compressor introduced in v1.5.3. The bug
281 occurred in an unlikely case, and due to validity checks it did not
282 affect successfully created archives.
284 Fixed a minor compatibility issue with the LZMS compressor and
285 decompressor. This is *not* the default compression type and was only
286 introduced in v1.6.0. In the unlikely event that you created an
287 LZMS-compressed WIM with v1.6.0 and a checksum error is reported when
288 applying it with v1.6.1, decompress it with v1.6.0 then compress it with
291 Memory usage for LZMS and LZX compression has been decreased.
293 wimextract now allows wildcard characters in paths specified on the
294 command line. Also, the '--strict-wildcards' option has been removed
295 and replaced with the inverse option '--nullglob'. See the
296 documentation for wimextract for more details and changes.
298 The wimlib_extract_files() function is now considered deprecated in
299 favor of wimlib_extract_paths().
301 Fixed more permissions problems when extracting files on Windows.
303 A new '--no-attributes' option has been added to wimapply and
304 wimextract. The library flag is WIMLIB_EXTRACT_FLAG_NO_ATTRIBUTES.
306 The default chunk size is now set correctly when changing the
307 compression type of a WIM, for example with 'wimoptimize'.
309 The '--metadata' option to wiminfo has been replaced with the
310 '--detailed' option to wimdir.
312 In relevant wimlib-imagex commands, '--solid' may now be used as an
313 alias for '--pack-streams'.
316 Support for extracting and updating the new version 3584 WIMs has been
317 added. These WIMs typically pack many streams ("files") together into a
318 single compressed resource, thereby saving space. This degrades the
319 performance of random access (such as that which occurs on a mounted
320 image), but optimizations have been implemented for extraction. These
321 new WIM files also typically use a new compression format (LZMS), which
322 is similar to LZMA and can offer a better compression ratio than LZX.
323 These new WIM files can be created using `wimcapture' with
324 the '--compress=lzms --pack-streams' options. Note: this new WIM format
325 is used by the Windows 8 web downloader, but important segments of the
326 raw '.esd' files are encrypted, so wimlib will not be able to extract
327 such files until they are first decrypted.
329 wimlib now supports extracting files and directories from a WIM image
330 based on a "listfile" that itself contains the list of paths to extract.
331 For `wimextract', the syntax is to specify @LISTFILE instead of a PATH,
332 and for the library itself, the new APIs are wimlib_extract_pathlist()
333 and wimlib_extract_paths(). Path globs containing wildcard characters
336 For searching WIM files, wimlib now has configurable case sensitivity.
337 The default on Windows is still case-insensitive and the default on
338 UNIX-like systems is still case-sensitive, but this can be overridden
339 on either platform through flags to wimlib_global_init(). For
340 `wimlib-imagex', the environmental variable WIMLIB_IMAGEX_IGNORE_CASE
341 can be set to 1 or 0 for case-insensitive or case-sensitive behavior,
344 Support for compression chunk sizes greater than the default of 32768
345 bytes has been added. A larger chunk size typically results in a better
346 compression ratio. However, the MS implementation is seemingly not
347 compatible with all chunk sizes, especially for LZX compression, so the
348 defaults remain unchanged, with the exception of the new LZMS-compressed
349 WIMs, which use a larger chunk size by default.
351 The compression/decompression API exported by wimlib has been changed.
352 Now one set of functions handles all supported compression formats.
354 `wimcapture' and `wimappend' will now display the progress of scanning
355 the directory tree to capture, in addition to the progress of writing
356 data to the WIM. The '--verbose' option no longer does anything. The
357 library API change for this is the addition of several members to
358 `struct wimlib_progress_info_scan' available to progress callbacks.
360 `mkwinpeimg' now correctly handles the '--start-script' option when the
361 start script is not in the working directory.
363 Sequential extraction, previously requested by using
364 WIMLIB_EXTRACT_FLAG_SEQUENTIAL, is now the default.
365 WIMLIB_EXTRACT_FLAG_FILE_ORDER can be used to get the old default
366 behavior (extract in file order).
369 The new LZX compressor added in v1.5.2 has been improved and is now
370 enabled by default, except when `wimcapture' or `wimappend' is run
371 *without* the '--compress' option, in which case the faster LZX
372 compressor is used (the same as before). This behavior is reasonably
373 consistent with ImageX which actually uses "fast" (XPRESS) compression
374 by default. In those cases, use '--compress=maximum' to explicitly
375 capture a WIM image using the new (slower but better) LZX compressor.
377 The '--compress-slow' option still exists to `wimlib-imagex optimize',
378 but its new behavior is to tweak the new LZX compressor even more to
379 produce an even better compression ratio at the cost of more time spent
382 `wimlib-imagex optimize' now supports the '--compress=TYPE' option,
383 which recompresses the WIM file using the specified compression TYPE.
384 The new library API function used for this is
385 wimlib_set_output_compression_type().
387 Added the wimlib_get_xml_data() function to allow library clients to
388 easily retrieve the raw XML data from a WIM file if needed.
390 Fixed a bug that could cause an error code to be incorrectly returned
391 when writing XML data containing a <WINDOWS> element.
393 Mounted WIM images will now correctly show the default file stream even
394 if appears in the alternate data stream entries of the corresponding WIM
398 Added a new experimental LZX compressor which can be enabled by passing
399 '--compress-slow' to `wimlib-imagex capture' or `wimlib-imagex
400 optimize'. (The latter is only applicable if the WIM is already
401 LZX-compressed and the '--recompress' option is also given.) The
402 experimental compressor is much slower but compresses the data slightly
403 more --- currently usually to within a fraction of a percent of the
404 results from WIMGAPI/ImageX.
406 A workaround has been added for compatibility with versions of WinPE
407 that interpret alternate data stream entries in the boot WIM
410 An alignment bug that caused a crash in the LZX decompressor on some
413 wimlib now attempts to clear the WIM_HDR_FLAG_WRITE_IN_PROGRESS flag in
414 the WIM header when restoring the previous state of a WIM it failed to
417 Added a workaround to avoid an access denied error on Windows when
418 replacing a WIM file that another process has opened.
421 wimlib can now open WinPE WIMs from WAIK v2.1, which had a quirk that
422 needed to be handled.
424 A bug in the interpretation of negative IMAGE indices in the
425 --update-of=[WIMFILE:]IMAGE option to `wimlib-imagex capture' and
426 `wimlib-imagex append' has been fixed.
428 A workaround has been added to successfully apply security descriptors
429 with empty DACLs when the NTFS-3g apply mode is being used with NTFS-3g
430 2013.1.13 or earlier.
432 `wimlib-imagex capture' can now accept the '--delta-from' option
436 Added support for "pipable" WIMs. Pipable WIMs allow capturing images
437 to standard output and applying images from standard input, but they are
438 not compatible with Microsoft's software and are not created by default.
439 See the documentation for --pipable flag of `wimlib-imagex capture' for
442 To better support incremental backups, added support for declaring an
443 image as a modified form of another image. See the documentation for
444 the '--update-of' option of `wimlib-imagex append' and `wimlib-imagex
447 Added supported for "delta" WIMs. See the documentation for the
448 '--delta-from' option of `wimlib-imagex capture'.
450 The library support for managing split WIMs has been changed to support
451 other arrangements, such as delta WIMs, and be easier to use. This
452 change is visible in `wimlib-imagex', which also can now accept the
453 '--ref' option multiple times, and also now supports "delta" WIMs as
456 wimlib now preserves WIM integrity tables by default, even if
457 WIMLIB_WRITE_FLAG_CHECK_INTEGRITY is not specified. This changes the
458 behavior of `wimlib-imagex' whenever the WIM being operated on contains
459 an integrity table and the '--check' option is not specified.
461 `wimlib-imagex capture' now creates LZX-compressed WIMs by default
462 (when --compress is not specified). This provides the best compression
463 ratio by default, which is usually what is desired, at a cost of some
466 `wimlib-imagex' now supports being invoked as wimCOMMAND, where COMMAND
467 is the command as in `wimlib-imagex COMMAND'; for example, it can be
468 invoked as `wimapply' as an alternative to `wimlib-imagex apply'. The
469 appropriate hard links are created in UNIX installations of
470 `wimlib-imagex', while for the Windows distribution of `wimlib-imagex',
471 batch files that emulate this behavior are generated.
473 Security descriptors are now extracted correctly on Windows.
475 Fixed archiving DOS names in NTFS-3g capture mode.
477 The extraction code has been rewritten and it will now be easier to
478 support new features on all supported backends (currently Win32, UNIX,
479 and NTFS-3g). For example, hard-linked extraction mode (--hardlink) is
480 now supported on all backends, not just UNIX.
482 `mkwinpeimg' now supports grabbing files from the WAIK supplement rather
483 than the WAIK itself.
485 wimlib_global_init() now, by default, attempts to acquire additional
486 privileges on Windows, so library clients need not do this.
488 This update bumps the shared library version number up to 9, since it is
489 not binary compatibible with previous releases.
492 Fixed bug in `wimlib-imagex export' that made it impossible to export an
493 image from a WIM that is readonly at the filesystem level.
495 Return error code rather than segfaulting when trying to list files from
496 a non-first part of a split WIM.
498 Joining a WIM will now preserve the RP_FIX and READONLY flags.
501 On Windows, paths given to wimlib-imagex are now treated case
504 Improved behavior regarding invalid filenames; in particular, on
505 Windows, wimlib-imagex will, when extracting, now omit (with an option
506 to override this default) filenames differing only in case, or filenames
507 containing characters not valid on Windows.
509 On Windows, wimlib now supports capturing and extracting long paths
510 (longer than the so-called MAX_PATH).
512 On Windows, `wimlib-imagex update' now acquires proper privileges when
513 running as an Administrator.
515 `wimlib-imagex update' will now complain if no image is specified when
516 trying to update a multi-image WIM.
518 `wimlib-imagex update' now supports specifying a single update command
519 directly on the command line using the --command option.
521 wimlib-imagex will now choose different units for progress messages,
522 depending on the amount of data that needs to be processed.
524 `wimlib-imagex append' will now generate a unique WIM image name if no
525 name is specified and the defaulted name already exists in the WIM.
527 wimlib now allows you to create unnamed WIM images, which can then only
528 be referred to by index.
530 wimlib now allows you to explicitly declare you want write access to a
531 WIM by providing the WIMLIB_OPEN_FLAG_WRITE_ACCESS flag to
534 wimlib now respects the WIM_HDR_FLAG_READONLY flag when set in the WIM
537 Progress callbacks have been added to wimlib's wimlib_update_image()
540 Added wimlib_get_wim_info(), wimlib_set_wim_info(),
541 wimlib_iterate_dir_tree(), and wimlib_iterate_lookup_table() functions
544 NTFS-3g capture now only warns about two conditions previously treated
547 Fixed a couple issues with using wimlib-imagex on UDF filesystems on
550 wimlib now correctly detects and returns an error when reading a WIM
551 image with a cyclic directory structure. (Fun fact: such a WIM will
552 crash Microsoft's software.)
555 Added new "extract" and "update" subcommands to wimlib-imagex, along
556 with associated APIs in the library. These commands are intended mainly
557 for Windows use but can be used on UNIX as well.
559 Many documentation improvements.
561 Fixed a bug in the Windows build where relative symbolic links were not
562 captured in reparse-point fixup mode.
564 Fixed a bug in the Windows build where file handles were left open to
565 the WIM file, causing `wimlib_imagex optimize' to fail in some cases.
567 Fixed a bug in the Windows build of wimlib-imagex where globbing
568 split-WIM parts could cause the program to crash.
570 Fixed a bug where the creation time of WIM images would be shown instead
571 of the last modification time.
573 With the Windows build it is now possible to restore a WIM containing
574 symbolic links as a non-Administrator; however you will receive warnings
575 about not being able to extract the symbolic links.
578 Capturing a WIM image should now be significantly faster in most cases
579 due to improved use of the operating system's cache and avoiding reading
580 files twice whenever possible.
582 The Windows build should now work on Windows XP.
584 The Windows build now supports capturing and restoring hidden,
585 compressed, sparse, and encrypted files.
587 The Windows build now supports capturing and applying WIM images from
588 filesystems other than NTFS (with some reduced functionality).
590 The Windows build now extracts short names correctly.
592 Added support for "reparse-point" fixups (i.e. fixing up of symbolic
593 links). See docs for --rpfix and --norpfix flags of `wimlib-imagex
594 capture' and `wimlib-imagex apply'.
596 The performance of splitting and joining WIMs should be slightly
599 The LZX and XPRESS compression and decompression functions are now
600 exported from the library.
603 Improvements and bugfixes for the Windows build.
605 Added --strict-acls options.
607 Fixed the way that wimlib determines the order of images in the WIM.
610 Since wimlib can now be used on Windows, wimlib's implementation of
611 ImageX has been renamed to wimlib-imagex to avoid confusion with
612 Microsoft's implementation of ImageX, which would have the same file
613 name ("imagex.exe"). If you really don't like this you can pass the
614 --with-imagex-progname option to `configure' to choose a different name,
615 or even simply rename the binary yourself (but the former way will
616 configure the man pages to use the chosen name).
618 Various bugs fixed in the Windows build. Mainly to do with capturing
619 and restoring alternate data streams correctly in weird cases, and
620 requesting the correct privileges when opening files. Also added the
621 --noacls options to wimlib-imagex capture, append, and apply.
623 Windows build again: FindFirstStreamW() and FindNextStreamW() are now
624 dynamically loaded, so this may make the library compatible with Windows
625 XP (however, there may still be other problems).
628 Added experimental support for native Windows builds. Binaries can be
629 downloaded from the SourceForge page.
631 --source-list option added to `imagex capture' and `imagex append'.
633 Better support for different character encodings.
636 Storing UNIX file owners, groups, and modes in WIM images is now
637 possible using `imagex capture' with the --unix-data flag.
639 Minor bug fixes and documentation fixes.
642 NTFS capture: Fixed capturing duplicate reparse points.
644 NTFS capture: Capture first unnamed stream if there are more than one
645 (print warning instead of error).
647 Allow multiple test cases to execute concurrently (e.g. make -j2 check).
650 Added --arch switch to mkwinpeimg script to support getting AMD64 WinPE
653 Update to work with ntfs-3g version 2013.1.13.
656 Fixed truncating file to shorter but non-zero length on read-write
659 Various code cleanups and minor documentation fixes.
662 LZX and XPRESS decompression have received some additional optimizations
663 and should now be even faster. (Although, they were already pretty
664 fast--- much faster than typical I/O speeds.)
666 Fixed a bug introduced in v1.2.1 that would cause a directory tree
667 containing hard links to be captured incorrectly in some cases.
670 By default, unmounting a read-write mounted WIM with 'imagex unmount
671 --commit' will now change the WIM in-place without needing to write the
672 entire WIM again. Use 'imagex unmount --commit --rebuild' to get the
675 'imagex unmount' no longer has a hard-coded limit of 10 minutes to wait
676 for a response from the daemon servicing the mounted WIM. Instead,
677 every second 'imagex unmount' will check if the daemon is still alive,
678 and keep waiting if so, otherwise terminate with an error.
680 'imagex unmount --commit' on a read-write mounted WIM will now print
681 progress information regarding the writing of new or modified streams
682 the WIM, just like when capturing or appending a WIM.
684 A small change has been made to XPRESS compression and it should improve
685 the compression ratio slightly.
687 A change was made that may improve performance slightly when applying a
688 WIM image to a NTFS volume.
690 Microsoft has managed to introduce even more bugs into their software,
691 and now the WIMs for Windows 8 have incorrect (too low) reference counts
692 for some streams. This is unsafe because such streams can be removed
693 when they are in actuality still referenced in the WIM (perhaps by a
694 different image). wimlib will now work around this problem by fixing
695 the stream reference counts. This is only done when wimlib_delete_image() is
696 called ('imagex delete') or when wimlib_mount_image() is called with
697 WIMLIB_MOUNT_FLAG_READWRITE ('imagex mountrw'). Please note that this
698 requires reading the metadata for all images in the WIM, so this will
699 make these operations noticably slower on WIMs with multiple images.
701 Various other bugfixes.
704 Appending images to a WIM is now be done by default without re-building
705 the whole WIM. Use the --rebuild flag to get the old behavior (which
706 was to re-build the entire WIM when a new image is appended).
708 A new command `imagex optimize' is now available to manually re-build a
709 WIM that has wasted space due to repeated appends.
711 Progress information has been improved, and now arbitrary callback
712 functions can be used to show the progress of a WIM operation.
714 A possible bug with changing the bootable image of a WIM was fixed.
716 Some advisory locking is now done to prevent two processes from
717 modifying a WIM at the same time (but only in some cases). For example,
718 you cannot mount two images from a WIM read-write at the same time.
720 Some functions have been reorganized:
721 * wimlib_mount() renamed to wimlib_mount_image().
722 * wimlib_unmount() renamed to wimlib_unmount_image().
723 * wimlib_overwrite_xml_and_header() removed as
724 wimlib_overwrite() suffices now.
725 * wimlib_apply_image_to_ntfs_volume() removed as
726 wimlib_extract_image() suffices now.
727 * wimlib_add_image_from_ntfs_volume() removed as
728 * wimlib_add_image() suffices now.
730 Previously, the soname of libwim.so has been 0.0.0, despite many
731 interface changes. The soname is now updated to 1.0.0 and will now be
732 updated each release.
735 Resources will now be compressed using multiple threads by default.
736 (This applies to `imagex capture', `imagex append', and `imagex
739 Some performance improvements in mounted WIMs.
741 More progress information is shown when capturing a WIM.
744 Lots of minor fixes, code cleanups, and some documentation updates.
745 Nothing in particular is really noteworthy.
748 LZX and XPRESS compression improvements.
750 Fixed calculation of Directory Count, File Count, Total Bytes, and Hard
751 Link Bytes of the WIM.
754 Fixed bug when capturing NTFS file with multiple named data streams.
756 Internally, we are now using inode structures, even though these don't
757 appear literally in the WIM file. This simplifies some of the code
758 (mainly for WIM mounting) and likely fixed a few problems, although it
762 Fixed problem when exporting images from XPRESS to LZX compressed WIM or
766 Enough changes to call it version 1.0.0!
768 Capturing a WIM directly from a NTFS volume, and applying a WIM directly
769 to a NTFS volume, is now supported.
771 Hard links and symbolic links have much improved support. They are
772 supported for WIM capture, WIM application, and mounted WIMs (you can
773 even make them on read-write mounted WIMs).
775 Alternate data streams are now supported on mounted WIMs through an
776 xattr or a Windows-style stream interface. Also they are supported when
777 capturing a WIM from NTFS or applying a WIM to NTFS.
779 Split WIMs are better supported. You may now apply an image directly
780 from a split WIM, mount an image from a split WIM read-only, or export
781 an image from a split WIM.
783 Using a capture configuration file is now supported (but not fully yet).
785 SHA1 message digests are checked in more places, so we can make sure
786 applied and captured data is correct.
788 Man pages have been updated and consolidated.
791 Fixed segfault when unmounting read-only WIM.
794 Support for joining and splitting WIMs.
795 Also, security data is now preserved by default.
798 Can now build with older gcc and system headers, like on CentOS 5.
801 Fixed bug that made it impossible to overwrite files in read-write
805 Write byte-order mark before WIM XML data. (imagex.exe requires this to