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 the NTFS-3g and Windows capture modes has been
35 Improved the LZX compressor. It is now 15-20% faster than before and
36 provides a slightly better compression ratio.
38 Improved the LZMS compressor. It now provides a compression ratio
39 slightly better than WIMGAPI while still being faster and using slightly
42 The compression chunk size in solid resources, e.g. when capturing or
43 exporting a WIM file using the '--solid' option, now defaults to 64 MiB
44 (67108864 bytes) instead of 32 MiB (33554432 bytes). This provides a
45 better compression ratio and is the same value that WIMGAPI uses. The
46 memory usage is less than 50% higher than wimlib v1.7.4 and is slightly
47 lower than WIMGAPI's memory usage, but if it is too much, it is still
48 possible to choose a lower value, e.g. with the '--solid-chunk-size'
49 option to wimlib-imagex.
51 The '--chunk-size' and '--solid-chunk-size' options to wimlib-imagex now
52 accept the 'K', 'M', and 'G' suffixes.
54 Files are now sorted by name extension when creating a solid WIM file.
56 Fixed various issues related to capture/apply of EFS-encrypted files on
59 The file list printed by 'wimdir' is now sorted by the platform-specific
60 case sensitivity setting, rather than always case sensitively. This
61 also affects the library function wimlib_iterate_dir_tree().
63 On Windows, some error and warning messages have been improved.
66 The Windows binary distribution no longer contains third party DLLs.
67 These dependencies are instead compiled directly into the libwim DLL.
69 Added more fixes for wimlib on non-x86 architectures such as ARM.
71 Extracting files to a Windows PE in-memory filesystem no longer fails if
72 the target files do not yet exist.
74 Improved the performance of XPRESS compression and LZMS decompression.
76 Enabled SSSE3 accelerated SHA-1 computation in x86_64 Windows builds.
77 It will automatically be faster on newer Intel and AMD processors.
79 Removed the --with-imagex-progname and --enable-more-assertions
83 Fix for very slow export from solid WIM / ESD files.
85 Fix for LZX and LZMS algorithms on non-x86 architectures, such as ARM.
87 New progress message: WIMLIB_PROGRESS_MSG_HANDLE_ERROR. Applications
88 may use this to treat some types of errors as non-fatal.
90 The library now permits making in-memory changes to a WIMStruct backed
91 by a read-only WIM file.
93 Fixes for "WIMBoot" extraction mode (Windows only):
95 When not using the WOF driver, extraction no longer fails if the
96 disk containing the WIM file has too many partitions.
98 When matching patterns in [PrepopulateList], all hard links of
99 each file are now considered.
101 The system registry files are now automatically treated as being
102 in [PrepopulateList].
104 Added a hack to try to work around an intermittent bug in
105 Microsoft's WOF (Windows Overlay Filesystem) driver.
108 Made more improvements to the XPRESS, LZX, and LZMS compressors.
110 A number of improvements to the Windows port:
112 Fixes for setting short filenames.
114 Faster "WIMBoot" extraction.
116 Updated and slimmed down the dependent DLLs.
118 ACL inheritence bits are now restored.
120 Mandatory integrity labels are now backed up and restored.
122 Added a workaround for an issue where in rare cases, wimlib could create
123 a compressed data stream that could not be read correctly by Windows
124 after an extraction in "WIMBoot" mode.
127 Added file count progress data for
128 WIMLIB_PROGRESS_MSG_EXTRACT_FILE_STRUCTURE and
129 WIMLIB_PROGRESS_MSG_EXTRACT_METADATA.
131 Added support for testing file exclusions via the user-provided
134 Some documentation improvements.
136 Made some clarifications to the license text in the COPYING file.
139 Made more improvements to the XPRESS, LZX, and LZMS compressors.
141 The default compression mode for wimcapture is now LZX compression in
142 its default mode, which is the same as '--compress=maximum'.
144 You can now specify an optional integer compression level to the
145 '--compress' option; e.g. '--compress=lzx:75'.
147 Made a minor change to the LZMS compressor and decompressor to fix an
148 incompatibility with the Microsoft implementation. In the unlikely
149 event that you created an LZMS-compressed WIM with wimlib v1.7.0 or
150 earlier and a checksum error is reported when extracting files from it
151 with wimlib v1.7.1, decompress it with v1.7.0 then compress it with
154 Added 'verify' subcommand to wimlib-imagex.
156 Notable library changes:
158 Custom compressor parameters have been removed from the library
159 in favor of the simpler level-based API.
161 Decompressor parameters have been removed entirely.
163 Library users can now specify a custom file for warning and
164 error messages to be sent to, rather than the default of
167 New progress messages:
168 WIMLIB_PROGRESS_MSG_EXTRACT_FILE_STRUCTURE,
169 WIMLIB_PROGRESS_MSG_EXTRACT_METADATA.
171 New function: wimlib_verify_wim().
174 Improved compression, decompression, and extraction performance.
176 Improved compatibility with version 3584 WIM / ESD files:
177 - Add support for reading and writing multiple solid blocks per
178 archive, which WIMGAPI/DISM can create when appending an image.
179 - Correctly create solid blocks larger than 4 GiB.
181 'add' commands passed to wimupdate will now replace existing
182 nondirectory files by default. Use the --no-replace option to get the
185 The license for the library now contains an exception that allows using
186 it under the LGPL. See the COPYING file for details.
188 In reparse-point fixup mode (the default for capture), symbolic links
189 and junctions that point outside the tree being captured are no longer
190 excluded from capture.
192 Added support for "WIMBoot" capture and extraction. See the
193 documentation for the new '--wimboot' option to wimcapture and wimapply
194 for more information.
196 On UNIX-like systems, you can now backup and restore device nodes, named
197 pipes, and sockets. In addition, 32-bit user and group IDs are now
200 The way that UNIX data is stored in WIM files has been changed. If you
201 captured any WIMs with the --unix-data option, to upgrade them you'll
202 need to apply them with --unix-data using wimlib-imagex v1.6.2, then
203 re-capture them with --unix-data using this version.
205 wimlib now understands tagged metadata items, such as object IDs, that
206 can be stored in WIM directory entries.
208 Removed the --hardlink and --symlink options to wimapply, since I don't
209 think they are too useful and they got in the way of improving the code.
211 WIMs will now retain their GUIDs when rebuilt (e.g. with wimoptimize).
213 The 'mkwinpeimg' script now supports writing the ISO image to standard
216 The <ARCH> element in WIM XML data is now exported correctly.
218 On Windows, sparse file attributes are no longer set on extracted files.
219 Oddly enough, this actually saves disk space in some cases.
221 On UNIX, configuring with --disable-xattr or --enable-xattr is no longer
222 supported. Mounting WIM images now always requires extended attribute
223 support. Use --without-fuse to disable support for mounting WIM images;
224 this will also disable the need for extended attribute support.
226 Configuring with --enable-ssse3-sha1 now works correctly.
228 The shared library version has been bumped up. The main
229 incompatibilities are:
231 - WIMLIB_COMPRESSION_TYPE_XPRESS is now 1 and
232 WIMLIB_COMPRESSION_TYPE_LZX is now 2 (so it's the same as
235 - User-provided progress functions are now registered using a
236 separate function, wimlib_register_progress_function(). The
237 'progress_func' argument to many functions no longer exists.
239 - The return value from user-provided progress functions is now
242 - A context argument has been added to the prototype of
243 user-provided progress functions.
245 - 'struct wimlib_capture_config' has been removed. The library
246 now takes the path to the configuration file directly. This
247 affects wimlib_add_image(), wimlib_add_image_multisource(),
248 and wimlib_update_image(). However, a NULL value passed in
249 the argument retains the same meaning.
251 - Removed deprecated functions: some (de)compression functions,
252 wimlib_extract_files(), and wimlib_print_metadata().
254 - Removed extraction flags: WIMLIB_EXTRACT_FLAG_HARDLINK,
255 WIMLIB_EXTRACT_FLAG_SYMLINK, WIMLIB_EXTRACT_FLAG_FILE_ORDER,
256 and WIMLIB_EXTRACT_FLAG_SEQUENTIAL.
258 - Removed some progress messages:
259 WIMLIB_PROGRESS_MSG_APPLY_TIMESTAMPS,
260 WIMLIB_PROGRESS_MSG_EXTRACT_DIR_STRUCTURE_BEGIN,
261 WIMLIB_PROGRESS_MSG_EXTRACT_DIR_STRUCTURE_END. Numbering
264 - Removed some error codes. Numbering stays the same.
266 - Replaced WIMLIB_UNMOUNT_FLAG_LAZY with
267 WIMLIB_UNMOUNT_FLAG_FORCE.
269 - WIM paths passed to progress functions now have a leading
273 Case-insensitive comparisons of strings (e.g. filenames) containing
274 UTF-16 codepoints above 32767 are now done correctly.
276 Fixed build failure on Mac OS X.
278 wimunmount now provides the '--new-image' option to cause changes to a
279 read-write mounted image to be committed as a new image rather than as
280 an update of the mounted image. (The corresponding new library flag is
281 WIMLIB_UNMOUNT_FLAG_NEW_IMAGE.)
283 The LZMS ("recovery") compression chunk size, or "dictionary size", may
284 now be up to 1 GiB (1,073,741,824 bytes).
286 The performance of LZX ("maximum") and LZMS ("recovery") compression
287 with large chunk sizes has been slightly improved.
290 Stored files with size exactly 4 GiB (4,294,967,296 bytes) are now
291 decompressed correctly.
293 Fixed a bug in the LZX compressor introduced in v1.5.3. The bug
294 occurred in an unlikely case, and due to validity checks it did not
295 affect successfully created archives.
297 Fixed a minor compatibility issue with the LZMS compressor and
298 decompressor. This is *not* the default compression type and was only
299 introduced in v1.6.0. In the unlikely event that you created an
300 LZMS-compressed WIM with v1.6.0 and a checksum error is reported when
301 applying it with v1.6.1, decompress it with v1.6.0 then compress it with
304 Memory usage for LZMS and LZX compression has been decreased.
306 wimextract now allows wildcard characters in paths specified on the
307 command line. Also, the '--strict-wildcards' option has been removed
308 and replaced with the inverse option '--nullglob'. See the
309 documentation for wimextract for more details and changes.
311 The wimlib_extract_files() function is now considered deprecated in
312 favor of wimlib_extract_paths().
314 Fixed more permissions problems when extracting files on Windows.
316 A new '--no-attributes' option has been added to wimapply and
317 wimextract. The library flag is WIMLIB_EXTRACT_FLAG_NO_ATTRIBUTES.
319 The default chunk size is now set correctly when changing the
320 compression type of a WIM, for example with 'wimoptimize'.
322 The '--metadata' option to wiminfo has been replaced with the
323 '--detailed' option to wimdir.
325 In relevant wimlib-imagex commands, '--solid' may now be used as an
326 alias for '--pack-streams'.
329 Support for extracting and updating the new version 3584 WIMs has been
330 added. These WIMs typically pack many streams ("files") together into a
331 single compressed resource, thereby saving space. This degrades the
332 performance of random access (such as that which occurs on a mounted
333 image), but optimizations have been implemented for extraction. These
334 new WIM files also typically use a new compression format (LZMS), which
335 is similar to LZMA and can offer a better compression ratio than LZX.
336 These new WIM files can be created using `wimcapture' with
337 the '--compress=lzms --pack-streams' options. Note: this new WIM format
338 is used by the Windows 8 web downloader, but important segments of the
339 raw '.esd' files are encrypted, so wimlib will not be able to extract
340 such files until they are first decrypted.
342 wimlib now supports extracting files and directories from a WIM image
343 based on a "listfile" that itself contains the list of paths to extract.
344 For `wimextract', the syntax is to specify @LISTFILE instead of a PATH,
345 and for the library itself, the new APIs are wimlib_extract_pathlist()
346 and wimlib_extract_paths(). Path globs containing wildcard characters
349 For searching WIM files, wimlib now has configurable case sensitivity.
350 The default on Windows is still case-insensitive and the default on
351 UNIX-like systems is still case-sensitive, but this can be overridden
352 on either platform through flags to wimlib_global_init(). For
353 `wimlib-imagex', the environmental variable WIMLIB_IMAGEX_IGNORE_CASE
354 can be set to 1 or 0 for case-insensitive or case-sensitive behavior,
357 Support for compression chunk sizes greater than the default of 32768
358 bytes has been added. A larger chunk size typically results in a better
359 compression ratio. However, the MS implementation is seemingly not
360 compatible with all chunk sizes, especially for LZX compression, so the
361 defaults remain unchanged, with the exception of the new LZMS-compressed
362 WIMs, which use a larger chunk size by default.
364 The compression/decompression API exported by wimlib has been changed.
365 Now one set of functions handles all supported compression formats.
367 `wimcapture' and `wimappend' will now display the progress of scanning
368 the directory tree to capture, in addition to the progress of writing
369 data to the WIM. The '--verbose' option no longer does anything. The
370 library API change for this is the addition of several members to
371 `struct wimlib_progress_info_scan' available to progress callbacks.
373 `mkwinpeimg' now correctly handles the '--start-script' option when the
374 start script is not in the working directory.
376 Sequential extraction, previously requested by using
377 WIMLIB_EXTRACT_FLAG_SEQUENTIAL, is now the default.
378 WIMLIB_EXTRACT_FLAG_FILE_ORDER can be used to get the old default
379 behavior (extract in file order).
382 The new LZX compressor added in v1.5.2 has been improved and is now
383 enabled by default, except when `wimcapture' or `wimappend' is run
384 *without* the '--compress' option, in which case the faster LZX
385 compressor is used (the same as before). This behavior is reasonably
386 consistent with ImageX which actually uses "fast" (XPRESS) compression
387 by default. In those cases, use '--compress=maximum' to explicitly
388 capture a WIM image using the new (slower but better) LZX compressor.
390 The '--compress-slow' option still exists to `wimlib-imagex optimize',
391 but its new behavior is to tweak the new LZX compressor even more to
392 produce an even better compression ratio at the cost of more time spent
395 `wimlib-imagex optimize' now supports the '--compress=TYPE' option,
396 which recompresses the WIM file using the specified compression TYPE.
397 The new library API function used for this is
398 wimlib_set_output_compression_type().
400 Added the wimlib_get_xml_data() function to allow library clients to
401 easily retrieve the raw XML data from a WIM file if needed.
403 Fixed a bug that could cause an error code to be incorrectly returned
404 when writing XML data containing a <WINDOWS> element.
406 Mounted WIM images will now correctly show the default file stream even
407 if appears in the alternate data stream entries of the corresponding WIM
411 Added a new experimental LZX compressor which can be enabled by passing
412 '--compress-slow' to `wimlib-imagex capture' or `wimlib-imagex
413 optimize'. (The latter is only applicable if the WIM is already
414 LZX-compressed and the '--recompress' option is also given.) The
415 experimental compressor is much slower but compresses the data slightly
416 more --- currently usually to within a fraction of a percent of the
417 results from WIMGAPI/ImageX.
419 A workaround has been added for compatibility with versions of WinPE
420 that interpret alternate data stream entries in the boot WIM
423 An alignment bug that caused a crash in the LZX decompressor on some
426 wimlib now attempts to clear the WIM_HDR_FLAG_WRITE_IN_PROGRESS flag in
427 the WIM header when restoring the previous state of a WIM it failed to
430 Added a workaround to avoid an access denied error on Windows when
431 replacing a WIM file that another process has opened.
434 wimlib can now open WinPE WIMs from WAIK v2.1, which had a quirk that
435 needed to be handled.
437 A bug in the interpretation of negative IMAGE indices in the
438 --update-of=[WIMFILE:]IMAGE option to `wimlib-imagex capture' and
439 `wimlib-imagex append' has been fixed.
441 A workaround has been added to successfully apply security descriptors
442 with empty DACLs when the NTFS-3g apply mode is being used with NTFS-3g
443 2013.1.13 or earlier.
445 `wimlib-imagex capture' can now accept the '--delta-from' option
449 Added support for "pipable" WIMs. Pipable WIMs allow capturing images
450 to standard output and applying images from standard input, but they are
451 not compatible with Microsoft's software and are not created by default.
452 See the documentation for --pipable flag of `wimlib-imagex capture' for
455 To better support incremental backups, added support for declaring an
456 image as a modified form of another image. See the documentation for
457 the '--update-of' option of `wimlib-imagex append' and `wimlib-imagex
460 Added supported for "delta" WIMs. See the documentation for the
461 '--delta-from' option of `wimlib-imagex capture'.
463 The library support for managing split WIMs has been changed to support
464 other arrangements, such as delta WIMs, and be easier to use. This
465 change is visible in `wimlib-imagex', which also can now accept the
466 '--ref' option multiple times, and also now supports "delta" WIMs as
469 wimlib now preserves WIM integrity tables by default, even if
470 WIMLIB_WRITE_FLAG_CHECK_INTEGRITY is not specified. This changes the
471 behavior of `wimlib-imagex' whenever the WIM being operated on contains
472 an integrity table and the '--check' option is not specified.
474 `wimlib-imagex capture' now creates LZX-compressed WIMs by default
475 (when --compress is not specified). This provides the best compression
476 ratio by default, which is usually what is desired, at a cost of some
479 `wimlib-imagex' now supports being invoked as wimCOMMAND, where COMMAND
480 is the command as in `wimlib-imagex COMMAND'; for example, it can be
481 invoked as `wimapply' as an alternative to `wimlib-imagex apply'. The
482 appropriate hard links are created in UNIX installations of
483 `wimlib-imagex', while for the Windows distribution of `wimlib-imagex',
484 batch files that emulate this behavior are generated.
486 Security descriptors are now extracted correctly on Windows.
488 Fixed archiving DOS names in NTFS-3g capture mode.
490 The extraction code has been rewritten and it will now be easier to
491 support new features on all supported backends (currently Win32, UNIX,
492 and NTFS-3g). For example, hard-linked extraction mode (--hardlink) is
493 now supported on all backends, not just UNIX.
495 `mkwinpeimg' now supports grabbing files from the WAIK supplement rather
496 than the WAIK itself.
498 wimlib_global_init() now, by default, attempts to acquire additional
499 privileges on Windows, so library clients need not do this.
501 This update bumps the shared library version number up to 9, since it is
502 not binary compatibible with previous releases.
505 Fixed bug in `wimlib-imagex export' that made it impossible to export an
506 image from a WIM that is readonly at the filesystem level.
508 Return error code rather than segfaulting when trying to list files from
509 a non-first part of a split WIM.
511 Joining a WIM will now preserve the RP_FIX and READONLY flags.
514 On Windows, paths given to wimlib-imagex are now treated case
517 Improved behavior regarding invalid filenames; in particular, on
518 Windows, wimlib-imagex will, when extracting, now omit (with an option
519 to override this default) filenames differing only in case, or filenames
520 containing characters not valid on Windows.
522 On Windows, wimlib now supports capturing and extracting long paths
523 (longer than the so-called MAX_PATH).
525 On Windows, `wimlib-imagex update' now acquires proper privileges when
526 running as an Administrator.
528 `wimlib-imagex update' will now complain if no image is specified when
529 trying to update a multi-image WIM.
531 `wimlib-imagex update' now supports specifying a single update command
532 directly on the command line using the --command option.
534 wimlib-imagex will now choose different units for progress messages,
535 depending on the amount of data that needs to be processed.
537 `wimlib-imagex append' will now generate a unique WIM image name if no
538 name is specified and the defaulted name already exists in the WIM.
540 wimlib now allows you to create unnamed WIM images, which can then only
541 be referred to by index.
543 wimlib now allows you to explicitly declare you want write access to a
544 WIM by providing the WIMLIB_OPEN_FLAG_WRITE_ACCESS flag to
547 wimlib now respects the WIM_HDR_FLAG_READONLY flag when set in the WIM
550 Progress callbacks have been added to wimlib's wimlib_update_image()
553 Added wimlib_get_wim_info(), wimlib_set_wim_info(),
554 wimlib_iterate_dir_tree(), and wimlib_iterate_lookup_table() functions
557 NTFS-3g capture now only warns about two conditions previously treated
560 Fixed a couple issues with using wimlib-imagex on UDF filesystems on
563 wimlib now correctly detects and returns an error when reading a WIM
564 image with a cyclic directory structure. (Fun fact: such a WIM will
565 crash Microsoft's software.)
568 Added new "extract" and "update" subcommands to wimlib-imagex, along
569 with associated APIs in the library. These commands are intended mainly
570 for Windows use but can be used on UNIX as well.
572 Many documentation improvements.
574 Fixed a bug in the Windows build where relative symbolic links were not
575 captured in reparse-point fixup mode.
577 Fixed a bug in the Windows build where file handles were left open to
578 the WIM file, causing `wimlib_imagex optimize' to fail in some cases.
580 Fixed a bug in the Windows build of wimlib-imagex where globbing
581 split-WIM parts could cause the program to crash.
583 Fixed a bug where the creation time of WIM images would be shown instead
584 of the last modification time.
586 With the Windows build it is now possible to restore a WIM containing
587 symbolic links as a non-Administrator; however you will receive warnings
588 about not being able to extract the symbolic links.
591 Capturing a WIM image should now be significantly faster in most cases
592 due to improved use of the operating system's cache and avoiding reading
593 files twice whenever possible.
595 The Windows build should now work on Windows XP.
597 The Windows build now supports capturing and restoring hidden,
598 compressed, sparse, and encrypted files.
600 The Windows build now supports capturing and applying WIM images from
601 filesystems other than NTFS (with some reduced functionality).
603 The Windows build now extracts short names correctly.
605 Added support for "reparse-point" fixups (i.e. fixing up of symbolic
606 links). See docs for --rpfix and --norpfix flags of `wimlib-imagex
607 capture' and `wimlib-imagex apply'.
609 The performance of splitting and joining WIMs should be slightly
612 The LZX and XPRESS compression and decompression functions are now
613 exported from the library.
616 Improvements and bugfixes for the Windows build.
618 Added --strict-acls options.
620 Fixed the way that wimlib determines the order of images in the WIM.
623 Since wimlib can now be used on Windows, wimlib's implementation of
624 ImageX has been renamed to wimlib-imagex to avoid confusion with
625 Microsoft's implementation of ImageX, which would have the same file
626 name ("imagex.exe"). If you really don't like this you can pass the
627 --with-imagex-progname option to `configure' to choose a different name,
628 or even simply rename the binary yourself (but the former way will
629 configure the man pages to use the chosen name).
631 Various bugs fixed in the Windows build. Mainly to do with capturing
632 and restoring alternate data streams correctly in weird cases, and
633 requesting the correct privileges when opening files. Also added the
634 --noacls options to wimlib-imagex capture, append, and apply.
636 Windows build again: FindFirstStreamW() and FindNextStreamW() are now
637 dynamically loaded, so this may make the library compatible with Windows
638 XP (however, there may still be other problems).
641 Added experimental support for native Windows builds. Binaries can be
642 downloaded from the SourceForge page.
644 --source-list option added to `imagex capture' and `imagex append'.
646 Better support for different character encodings.
649 Storing UNIX file owners, groups, and modes in WIM images is now
650 possible using `imagex capture' with the --unix-data flag.
652 Minor bug fixes and documentation fixes.
655 NTFS capture: Fixed capturing duplicate reparse points.
657 NTFS capture: Capture first unnamed stream if there are more than one
658 (print warning instead of error).
660 Allow multiple test cases to execute concurrently (e.g. make -j2 check).
663 Added --arch switch to mkwinpeimg script to support getting AMD64 WinPE
666 Update to work with ntfs-3g version 2013.1.13.
669 Fixed truncating file to shorter but non-zero length on read-write
672 Various code cleanups and minor documentation fixes.
675 LZX and XPRESS decompression have received some additional optimizations
676 and should now be even faster. (Although, they were already pretty
677 fast--- much faster than typical I/O speeds.)
679 Fixed a bug introduced in v1.2.1 that would cause a directory tree
680 containing hard links to be captured incorrectly in some cases.
683 By default, unmounting a read-write mounted WIM with 'imagex unmount
684 --commit' will now change the WIM in-place without needing to write the
685 entire WIM again. Use 'imagex unmount --commit --rebuild' to get the
688 'imagex unmount' no longer has a hard-coded limit of 10 minutes to wait
689 for a response from the daemon servicing the mounted WIM. Instead,
690 every second 'imagex unmount' will check if the daemon is still alive,
691 and keep waiting if so, otherwise terminate with an error.
693 'imagex unmount --commit' on a read-write mounted WIM will now print
694 progress information regarding the writing of new or modified streams
695 the WIM, just like when capturing or appending a WIM.
697 A small change has been made to XPRESS compression and it should improve
698 the compression ratio slightly.
700 A change was made that may improve performance slightly when applying a
701 WIM image to a NTFS volume.
703 Microsoft has managed to introduce even more bugs into their software,
704 and now the WIMs for Windows 8 have incorrect (too low) reference counts
705 for some streams. This is unsafe because such streams can be removed
706 when they are in actuality still referenced in the WIM (perhaps by a
707 different image). wimlib will now work around this problem by fixing
708 the stream reference counts. This is only done when wimlib_delete_image() is
709 called ('imagex delete') or when wimlib_mount_image() is called with
710 WIMLIB_MOUNT_FLAG_READWRITE ('imagex mountrw'). Please note that this
711 requires reading the metadata for all images in the WIM, so this will
712 make these operations noticably slower on WIMs with multiple images.
714 Various other bugfixes.
717 Appending images to a WIM is now be done by default without re-building
718 the whole WIM. Use the --rebuild flag to get the old behavior (which
719 was to re-build the entire WIM when a new image is appended).
721 A new command `imagex optimize' is now available to manually re-build a
722 WIM that has wasted space due to repeated appends.
724 Progress information has been improved, and now arbitrary callback
725 functions can be used to show the progress of a WIM operation.
727 A possible bug with changing the bootable image of a WIM was fixed.
729 Some advisory locking is now done to prevent two processes from
730 modifying a WIM at the same time (but only in some cases). For example,
731 you cannot mount two images from a WIM read-write at the same time.
733 Some functions have been reorganized:
734 * wimlib_mount() renamed to wimlib_mount_image().
735 * wimlib_unmount() renamed to wimlib_unmount_image().
736 * wimlib_overwrite_xml_and_header() removed as
737 wimlib_overwrite() suffices now.
738 * wimlib_apply_image_to_ntfs_volume() removed as
739 wimlib_extract_image() suffices now.
740 * wimlib_add_image_from_ntfs_volume() removed as
741 * wimlib_add_image() suffices now.
743 Previously, the soname of libwim.so has been 0.0.0, despite many
744 interface changes. The soname is now updated to 1.0.0 and will now be
745 updated each release.
748 Resources will now be compressed using multiple threads by default.
749 (This applies to `imagex capture', `imagex append', and `imagex
752 Some performance improvements in mounted WIMs.
754 More progress information is shown when capturing a WIM.
757 Lots of minor fixes, code cleanups, and some documentation updates.
758 Nothing in particular is really noteworthy.
761 LZX and XPRESS compression improvements.
763 Fixed calculation of Directory Count, File Count, Total Bytes, and Hard
764 Link Bytes of the WIM.
767 Fixed bug when capturing NTFS file with multiple named data streams.
769 Internally, we are now using inode structures, even though these don't
770 appear literally in the WIM file. This simplifies some of the code
771 (mainly for WIM mounting) and likely fixed a few problems, although it
775 Fixed problem when exporting images from XPRESS to LZX compressed WIM or
779 Enough changes to call it version 1.0.0!
781 Capturing a WIM directly from a NTFS volume, and applying a WIM directly
782 to a NTFS volume, is now supported.
784 Hard links and symbolic links have much improved support. They are
785 supported for WIM capture, WIM application, and mounted WIMs (you can
786 even make them on read-write mounted WIMs).
788 Alternate data streams are now supported on mounted WIMs through an
789 xattr or a Windows-style stream interface. Also they are supported when
790 capturing a WIM from NTFS or applying a WIM to NTFS.
792 Split WIMs are better supported. You may now apply an image directly
793 from a split WIM, mount an image from a split WIM read-only, or export
794 an image from a split WIM.
796 Using a capture configuration file is now supported (but not fully yet).
798 SHA1 message digests are checked in more places, so we can make sure
799 applied and captured data is correct.
801 Man pages have been updated and consolidated.
804 Fixed segfault when unmounting read-only WIM.
807 Support for joining and splitting WIMs.
808 Also, security data is now preserved by default.
811 Can now build with older gcc and system headers, like on CentOS 5.
814 Fixed bug that made it impossible to overwrite files in read-write
818 Write byte-order mark before WIM XML data. (imagex.exe requires this to