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2022-11-14Translations: Update the Swedish translation.Lasse Collin1-289/+382
2022-11-14Translations: Update the Ukrainian translation.Lasse Collin1-264/+354
2022-11-14Build: Omit x86_64 from --enable-assembler.Lasse Collin1-4/+2
It didn't do anything. There are only 32-bit x86 assembly files and it feels likely that new files won't be added as intrinsics in C are more portable across toolchains and OSes.
2022-11-14liblzma: Use __attribute__((__constructor__)) if available.Lasse Collin6-5/+59
This uses it for CRC table initializations when using --disable-small. It avoids mythread_once() overhead. It also means that then --disable-small --disable-threads is thread-safe if this attribute is supported.
2022-11-12Translations: Update the Romanian translation.Lasse Collin1-271/+380
2022-11-12Translations: Update the Hungarian translation.Lasse Collin1-268/+357
2022-11-11Translations: Update the Finnish translation.Lasse Collin1-262/+348
2022-11-11Translations: Update the Croatian translation.Lasse Collin1-299/+381
2022-11-11Translations: Update the Polish translation.Lasse Collin1-260/+309
2022-11-11Translations: Update the Spanish translation.Lasse Collin1-254/+344
2022-11-11Update THANKS.Lasse Collin1-0/+1
2022-11-11liblzma: Fix building with Intel ICC (the classic compiler).Lasse Collin1-1/+1
It claims __GNUC__ >= 10 but doesn't support __symver__ attribute. Thanks to Stephen Sachs.
2022-11-11liblzma: Fix incorrect #ifdef for x86 SSE2 support.Lasse Collin1-2/+1
__SSE2__ is the correct macro for SSE2 support with GCC, Clang, and ICC. __SSE2_MATH__ means doing floating point math with SSE2 instead of 387. Often the latter macro is defined if the first one is but it was still a bug.
2022-11-11Add NEWS for 5.2.7 (forgotten cherry-pick from v5.2).Lasse Collin1-0/+74
2022-11-11xzdiff: Add support for .lz files.Lasse Collin1-5/+5
The other scripts don't need changes for .lz support because in those scripts it is enough that xz supports .lz.
2022-11-11Scripts: Ignore warnings from xz.Lasse Collin4-7/+8
In practice this means making the scripts work when the input files have an unsupported check type which isn't a problem in practice unless support for some check types has been disabled at build time.
2022-11-10Translations: Rename poa4/fr_FR.po to po4a/fr.po.Lasse Collin2-1/+1
That's how it is preferred at the Translation Project. On my system /usr/share/man/fr_FR doesn't contain any other man pages than XZ Utils while /usr/share/man/fr has quite a few, so this will fix that too. Thanks to Benno Schulenberg from the Translation Project.
2022-11-09xz: Update the man page about BCJ filters, including upcoming --arm64.Lasse Collin1-37/+29
The --arm64 isn't actually implemented yet in the form described in this commit. Thanks to Jia Tan.
2022-11-09xz: Add --arm64 to --long-help and omit endianness from ARM(-Thumb).Lasse Collin1-2/+3
Modern 32-bit ARM in big endian mode use little endian for instruction encoding still, so the filters work on such executables too. It's likely less confusing for users this way. The --arm64 option hasn't been implemented yet (there is --experimental-arm64 but it's different). The --arm64 option is added now anyway because this is the likely result and the strings need to be ready for translators. Thanks to Jia Tan.
2022-11-09Windows: Update the VS project files for ARM64 and .lz support.Lasse Collin9-4/+49
2022-11-09DOS: Update Makefile and config.h to include ARM64 and .lz support.Lasse Collin2-0/+11
2022-11-09CMake: Add lzip decoder files and #define to the build.Lasse Collin1-0/+3
2022-11-09Docs: Update INSTALL and also add new prohibited options to PACKAGERS.Lasse Collin2-8/+43
2022-11-09Tests: Test the .lz files in test_files.sh.Lasse Collin1-0/+25
2022-11-09Tests: Add .lz (lzip) test files.Lasse Collin19-11/+98
2022-11-09xz: Remove the commented-out FORMAT_GZIP, gzip, .gz, and .tgz.Lasse Collin3-12/+0
2022-11-09xz: Add .lz (lzip) decompression support.Lasse Collin6-13/+141
If configured with --disable-lzip-decoder then --long-help will still list `lzip' in --format but I left it like that since due to translations it would be messy to have two help strings. Features are disabled only in special situations so wrong help in such a situation shouldn't matter much. Thanks to Michał Górny for the original patch.
2022-11-09liblzma: Add .lz support to lzma_auto_decoder().Lasse Collin4-11/+47
Thanks to Michał Górny for the original patch.
2022-11-09liblzma: Add .lz (lzip) decompression support (format versions 0 and 1).Lasse Collin6-2/+501
Support for format version 0 was removed from lzip 1.18 for some reason. .lz format version 0 files are rare (and old) but some source packages were released in this format, and some people might have personal files in this format too. It's very little extra code to support it along side format version 1 so this commits adds support for both. The Sync Flush marker extentension to the original .lz format version 1 isn't supported. It would require changes to the LZMA decoder itself. Such files are very rare anyway. See the API doc for lzma_lzip_decoder() for more details about the .lz format support. Thanks to Michał Górny for the original patch.
2022-11-09liblzma: Add the missing Makefile.inc change for --disable-microlzma.Lasse Collin1-2/+10
This was forgotten from commit 59c4d6e1390f6f4176f43ac1dad1f7ac03c449b8.
2022-11-09xz: Add comments about stdin and src_st.st_size.Lasse Collin2-0/+13
"xz -v < regular_file > out.xz" doesn't display the percentage and estimated remaining time because it doesn't even try to check the input file size when input is read from stdin. This could be improved but for now there's just a comment to remind about it.
2022-11-09xz: Fix displaying of file sizes in progress indicator in passthru mode.Lasse Collin1-1/+5
It worked for one input file since the counters are zero when xz starts but they weren't reset when starting a new file in passthru mode. For example, if files A, B, and C are one byte each, then "xz -dcvf A B C" would show file sizes as 1, 2, and 3 bytes instead of 1, 1, and 1 byte.
2022-11-09xz: Add a comment why --to-stdout is not in --help.Lasse Collin1-0/+3
It is on the man page still.
2022-11-08xz: Make xz -lvv show that the upcoming --arm64 needs 5.4.0 to decompress.Lasse Collin1-5/+15
2022-11-08Docs: Update faq.txt a little.Lasse Collin1-23/+43
2022-11-08Translations: Update Turkish translation.Lasse Collin1-1/+1
2022-11-08Translations: Update Croatian translation.Lasse Collin1-94/+96
2022-11-08liblzma: Update API docs about decoder flags.Lasse Collin1-4/+17
2022-11-08liblzma: Use the return_if_error() macro in alone_decoder.c.Lasse Collin1-4/+2
2022-11-08liblzma: Fix a comment in auto_decoder.c.Lasse Collin1-2/+2
2022-11-08xz: Initialize the pledge(2) sandbox at the very beginning of main().Lasse Collin1-13/+14
It feels better that the initializations are sandboxed too. They don't do anything that the pledge() call wouldn't allow.
2022-11-07xz: Extend --robot --info-memory output.Lasse Collin2-15/+56
Now it includes everything that the human-readable --info-memory shows.
2022-11-07liblzma: Include cached memory in reported memusage in threaded decoder.Lasse Collin1-3/+19
This affects lzma_memusage() and lzma_memlimit_set() when used with the threaded decompressor. Now all allocations are reported by lzma_memusage() (so it's not misleading) and lzma_memlimit_set() cannot lower the limit below that value. The alternative would have been to allow lowering the limit if doing so is possible by freeing the cached memory but since the primary use case of lzma_memlimit_set() is to increase memlimit after LZMA_MEMLIMIT_ERROR this simple approach was selected. The cached memory was always included when enforcing the memory usage limit while decoding. Thanks to Jia Tan.
2022-11-07xz: Avoid a compiler warning in progress_speed() in message.c.Jia Tan1-6/+3
This should be smaller too since it avoids the string constants.
2022-10-31Build: Clarify comment in configure.ac about SSE2.Lasse Collin1-1/+4
2022-10-31Build: Remove obsolete commented-out lines from configure.ac.Lasse Collin1-4/+0
2022-10-31Windows: Fix mythread_once() macro with Vista threads.Lasse Collin1-3/+4
Don't call InitOnceComplete() if initialization was already done. So far mythread_once() has been needed only when building with --enable-small. windows/build.bash does this together with --disable-threads so the Vista-specific mythread_once() is never needed by those builds. VS project files or CMake-builds don't support HAVE_SMALL builds at all.
2022-10-31liblzma: Silence -Wconversion warning from crc64_fast.c.Lasse Collin1-2/+3
2022-10-31CMake: Sync tuklib_cpucores.cmake with tuklib_cpucores.m4.Lasse Collin1-0/+5
This was forgotten from commit 2611c4d90535652d3eb7ef4a026a6691276fab43.
2022-10-27Tests: test_files.sh: Make it not fail if features were disabled at build.Lasse Collin1-4/+46
It now tries to test as many files as easily possible. The exit status indicates skipping if any of the files were skipped. This way it is easy to notice if something is being skipped when it isn't expected.
2022-10-27Tests: test_files.sh: Suppress an expected warning from the log.Lasse Collin1-2/+2
xz (but not xzdec) will normally warn about unsupported check but since we are testing specifically such a file, it's better to silence that warning so that it doesn't look suspicious in test_files.sh.log. The use of -q and -Q in xzdec is just for consistency and doesn't affect the result at least for now.
2022-10-27Tests: test_files.sh: Print the reason for skipping if xz & xzdec missing.Lasse Collin1-0/+1
2022-10-27Tests: Keep test_compress_* working when some filters are unavailable.Lasse Collin1-14/+20
2022-10-26Tests: test_bcj_exact_size skips properly now if PowerPC filter disabled.Jia Tan1-0/+3
2022-10-26Tests: Test also unsupported-*.xz.Lasse Collin1-0/+37
2022-10-25Build: Use AC_CONFIG_HEADERS instead of the ancient AC_CONFIG_HEADER.Lasse Collin1-1/+1
We require Autoconf >= 2.69 and that has AC_CONFIG_HEADERS. There is a warning about AC_PROG_CC_C99 being obsolete but it cannot be removed because it is needed with Autoconf 2.69.
2022-10-25Build: Update m4/ax_pthread.m4 from Autoconf Archive.Lasse Collin1-7/+22
2022-10-25Build: Add configure option --disable-microlzma.Lasse Collin1-0/+22
MicroLZMA was made for EROFS and used by erofs-utils. It might be used by something else in the future but those wanting a smaller build for specific situations can now disable this rarely-needed feature.
2022-10-25xz: Fix --single-stream with an empty .xz Stream.Lasse Collin1-0/+9
Example: $ xz -dc --single-stream good-0-empty.xz xz: good-0-empty.xz: Internal error (bug) The code, that is tries to catch some input file issues early, didn't anticipate LZMA_STREAM_END which is possible in that code only when --single-stream is used.
2022-10-25xz: Add support for OpenBSD's pledge() sandbox.Lasse Collin4-4/+34
2022-10-25xz: Fix decompressor behavior if input uses an unsupported check type.Lasse Collin1-4/+15
Now files with unsupported check will make xz display a warning, set the exit status to 2 (unless --no-warn is used), and then decompress the file normally. This is how it was supposed to work since the beginning but this was broken by the commit 231c3c7098f1099a56abb8afece76fc9b8699f05, that is, a little before 5.0.0 was released. The buggy behavior displayed a message, set exit status 1 (error), and xz didn't attempt to to decompress the file. This doesn't matter today except for special builds that disable CRC64 or SHA-256 at build time (but such builds should be used in special situations only). The bug matters if new check type is added in the future and an old xz version is used to decompress such a file; however, it's likely that such files would use a new filter too and an old xz wouldn't be able to decompress the file anyway. The first hunk in the commit is the actual fix. The second hunk is a cleanup since LZMA_TELL_ANY_CHECK isn't used in xz. There is a test file for unsupported check type but it wasn't used by test_files.sh, perhaps due to different behavior between xz and the simpler xzdec.
2022-10-25xz: Clarify the man page: input file isn't removed if an error occurs.Lasse Collin1-2/+3
2022-10-25xz: Refactor to remove is_empty_filename().Lasse Collin3-17/+3
Long ago it was used in list.c too but nowadays it's needed only in io_open_src() so it's nicer to avoid a separate function.
2022-10-25xz: If input file cannot be removed, treat it as a warning, not error.Lasse Collin1-2/+2
Treating it as a warning (message + exit status 2) matches gzip and it seems more logical as at that point the output file has already been successfully closed. When it's a warning it is possible to suppress it with --no-warn.
2022-10-24liblzma: Threaded decoder: Stop the worker threads on errors.Lasse Collin1-7/+26
It's waste of CPU time and electricity to leave the unfinished worker threads running when it is known that their output will get ignored.
2022-10-20tuklib_cpucores: Use HW_NCPUONLINE on OpenBSD.Lasse Collin2-0/+14
On OpenBSD the number of cores online is often less than what HW_NCPU would return because OpenBSD disables simultaneous multi-threading (SMT) by default. Thanks to Christian Weisgerber.
2022-10-19Tests: Skip tests in test_*.sh if encoders and/or decoders are disabled.Lasse Collin3-0/+34
This isn't perfect as the scripts can still fail if only certain filters are disabled. This is still an improvement as now "make check" has better behavior when all encoders or decoders are disabled. Grepping ../config.h is simple and fairly clean but it only works if config.h was created. CMake builds don't create config.h but they don't use these test scripts either. Thanks to Sebastian Andrzej Siewior for reporting the problem. Thanks to Jia Tan for the original patch which grepped xz error messages instead of config.h.
2022-10-19Test: Remove the (exit 1) lines.Lasse Collin3-25/+0
I suspect that I used these in the original version because Autoconf's manual describes that such a trick is needed in some specific situations for portability reasons. None of those situations listed on Autoconf 2.71 manual apply to these test scripts though so this cleans them up.
2022-10-19Tests: Fix a warning in test_memlimit.c when decoders are disabled.Lasse Collin1-0/+3
2022-10-19Tests: Add test_memlimit to .gitignore.Lasse Collin1-0/+1
Thanks to Jia Tan.
2022-10-06Tests: Refactor test_stream_flags.c.Jia Tan1-117/+416
Converts test_stream_flags to tuktest. Also the test will now compile and skip properly if encoders or decoders are disabled. Thanks to Sebastian Andrzej Siewior.
2022-10-06Tests: Refactor test_block_header.c.Jia Tan1-116/+370
test_block_header now achieves higher test coverage. Also the test will now compile and skip properly if encoders or decoders are disabled. Thanks to Sebastian Andrzej Siewior.
2022-10-06Tests: Fix compilation issues.Jia Tan6-9/+56
test_bcj_exact_size, test_check, test_hardware, and test_index will all now compile and skip properly if encoders or decoders are disabled. Also fixed a small typo (disabed -> disabled). Thanks to Sebastian Andrzej Siewior.
2022-10-05Tests: Include mythread.h in the tests that use MYTHREAD_ENABLED.Lasse Collin3-0/+3
2022-10-05liblzma: Fix a compilation issue when encoders are disabled.Jia Tan1-3/+4
When encoders were disabled and threading enabled, outqueue.c and outqueue.h were not compiled. The multi threaded decoder required these files, so compilation failed.
2022-10-05Tests: Fix compilation error when threading support has been disabled.Jia Tan3-0/+12
Now tests that require threading are skipped when threading support has been disabled. Thanks to Sebastian Andrzej Siewior.
2022-10-05tuklib_integer: Add 64-bit endianness-converting reads and writes.Lasse Collin3-12/+51
Also update the comment in liblzma's memcmplen.h. Thanks to Michał Górny for the original patch for the reads.
2022-09-30liblzma: Add API doc note about the .xz decoder LZMA_MEMLIMIT_ERROR bug.Lasse Collin1-0/+11
The bug was fixed in 660739f99ab211edec4071de98889fb32ed04e98.
2022-09-28liblzma: Add dest and src NULL checks to lzma_index_cat.Jia Tan1-0/+3
The documentation states LZMA_PROG_ERROR can be returned from lzma_index_cat. Previously, lzma_index_cat could not return LZMA_PROG_ERROR. Now, the validation is similar to lzma_index_append, which does a NULL check on the index parameter.
2022-09-28Tests: Create a test for the lzma_index_cat bug.Jia Tan1-1/+42
2022-09-28liblzma: Fix copying of check type statistics in lzma_index_cat().Jia Tan1-1/+6
The check type of the last Stream in dest was never copied to dest->checks (the code tried to copy it but it was done too late). This meant that the value returned by lzma_index_checks() would only include the check type of the last Stream when multiple lzma_indexes had been concatenated. In xz --list this meant that the summary would only list the check type of the last Stream, so in this sense this was only a visual bug. However, it's possible that some applications use this information for purposes other than merely showing it to the users in an informational message. I'm not aware of such applications though and it's quite possible that such applications don't exist. Regular streamed decompression in xz or any other application doesn't use lzma_index_cat() and so this bug cannot affect them.
2022-09-28tuklib_physmem: Fix Unicode builds on Windows.Lasse Collin1-1/+1
Thanks to ArSaCiA Game.
2022-09-28Tests: Add test_memlimit.c to test restarting after LZMA_MEMLIMIT_ERROR.Lasse Collin2-0/+153
2022-09-28liblzma: Stream decoder: Fix restarting after LZMA_MEMLIMIT_ERROR.Lasse Collin1-3/+13
If lzma_code() returns LZMA_MEMLIMIT_ERROR it is now possible to use lzma_memlimit_set() to increase the limit and continue decoding. This was supposed to work from the beginning but there was a bug. With other decoders (.lzma or threaded .xz) this already worked correctly.
2022-09-28liblzma: Stream decoder: Fix comments.Lasse Collin1-7/+5
2022-09-20liblzma: ARM64: Add comments.Lasse Collin1-0/+13
2022-09-20liblzma: ARM64: Fix wrong comment in API doc.Lasse Collin1-2/+2
Thanks to Jia Tan.
2022-09-19xz: Add --experimental-arm64[=width=WIDTH].Lasse Collin4-0/+60
It will be renamed to --arm64 once it is stable. Man page or --long-help weren't updated yet.
2022-09-19liblzma: Add experimental ARM64 BCJ filter with a temporary Filter ID.Lasse Collin11-3/+313
That is, the Filter ID will be changed once the design is final. The current version will be removed. So files created with the tempoary Filter ID won't be supported in the future.
2022-09-17liblzma: Simple/BCJ filters: Allow disabling generic BCJ options.Lasse Collin8-9/+10
This will be needed for the ARM64 BCJ filter as it will use its own options struct.
2022-09-16Tests: Add a test file for lzma_index_append() integer overflow bug.Lasse Collin3-0/+18
This test fails before commit 18d7facd3802b55c287581405c4d49c98708c136. test_files.sh now runs xz -l for bad-3-index-uncomp-overflow.xz because only then the previously-buggy code path gets tested. Normal decompression doesn't use lzma_index_append() at all. Instead, lzma_index_hash functions are used and those already did the overflow check.
2022-09-16Translations: Add Turkish translation.Lasse Collin2-0/+978
2022-09-16Update THANKS.Lasse Collin1-0/+1
2022-09-16xzgrep: Fix compatibility with old shells.Lasse Collin1-3/+3
Running the current xzgrep on Slackware 10.1 with GNU bash 3.00.15: xzgrep: line 231: syntax error near unexpected token `;;' On SCO OpenServer 5.0.7 with Korn Shell 93r: syntax error at line 231 : `;;' unexpected Turns out that some old shells don't like apostrophes (') inside command substitutions. For example, the following fails: x=$(echo foo # asdf'zxcv echo bar) printf '%s\n' "$x" The problem was introduced by commits 69d1b3fc29677af8ade8dc15dba83f0589cb63d6 (2022-03-29), bd7b290f3fe4faeceb7d3497ed9bf2e6ed5e7dc5 (2022-07-18), and a648978b20495b7aa4a8b029c5a810b5ad9d08ff (2022-07-19). 5.2.6 is the only stable release that included this problem. Thanks to Kevin R. Bulgrien for reporting the problem on SCO OpenServer 5.0.7 and for providing the fix.
2022-09-09Tests: Silence warnings about unused functions from tuktest.h.Lasse Collin1-0/+10
Warnings about unused tuktest_run_test conveniently tell which test programs haven't been converted to tuktest.h yet but I silenced that warning too for now anyway. It is fine to use __attribute__((__unused__)) even when the function is actually used because the attribute only means that the function might be unused.
2022-09-09liblzma: lzma_filters_copy: Keep dest[] unmodified if an error occurs.Lasse Collin2-7/+15
lzma_stream_encoder() and lzma_stream_encoder_mt() always assumed this. Before this patch, failing lzma_filters_copy() could result in free(invalid_pointer) or invalid memory reads in stream_encoder.c or stream_encoder_mt.c. To trigger this, allocating memory for a filter options structure has to fail. These are tiny allocations so in practice they very rarely fail. Certain badness in the filter chain array could also make lzma_filters_copy() fail but both stream_encoder.c and stream_encoder_mt.c validate the filter chain before trying to copy it, so the crash cannot occur this way.
2022-09-08liblzma: lzma_index_append: Add missing integer overflow check.Jia Tan1-0/+4
The documentation in src/liblzma/api/lzma/index.h suggests that both the unpadded (compressed) size and the uncompressed size are checked for overflow, but only the unpadded size was checked. The uncompressed check is done first since that is more likely to occur than the unpadded or index field size overflows.
2022-09-08Update THANKS.Lasse Collin1-0/+1
2022-09-08CMake: Clarify a comment about Windows symlinks without file extension.Jia Tan1-4/+3
2022-09-08CMake: Update for liblzma_*.map files and fix wrong common_w32res.rc dep.Lasse Collin1-5/+19
The previous commit split liblzma.map into liblzma_linux.map and liblzma_generic.map. This commit updates the CMake build for those. common_w32res.rc dependency was listed under Linux/FreeBSD while obviously it belongs to Windows when building a DLL.
2022-09-08liblzma: Vaccinate against an ill patch from RHEL/CentOS 7.Lasse Collin10-15/+382
RHEL/CentOS 7 shipped with 5.1.2alpha, including the threaded encoder that is behind #ifdef LZMA_UNSTABLE in the API headers. In 5.1.2alpha these symbols are under XZ_5.1.2alpha in liblzma.map. API/ABI compatibility tracking isn't done between development releases so newer releases didn't have XZ_5.1.2alpha anymore. Later RHEL/CentOS 7 updated xz to 5.2.2 but they wanted to keep the exported symbols compatible with 5.1.2alpha. After checking the ABI changes it turned out that >= 5.2.0 ABI is backward compatible with the threaded encoder functions from 5.1.2alpha (but not vice versa as fixes and extensions to these functions were made between 5.1.2alpha and 5.2.0). In RHEL/CentOS 7, XZ Utils 5.2.2 was patched with xz-5.2.2-compat-libs.patch to modify liblzma.map: - XZ_5.1.2alpha was added with lzma_stream_encoder_mt and lzma_stream_encoder_mt_memusage. This matched XZ Utils 5.1.2alpha. - XZ_5.2 was replaced with XZ_5.2.2. It is clear that this was an error; the intention was to keep using XZ_5.2 (XZ_5.2.2 has never been used in XZ Utils). So XZ_5.2.2 lists all symbols that were listed under XZ_5.2 before the patch. lzma_stream_encoder_mt and _mt_memusage are included too so they are listed both here and under XZ_5.1.2alpha. The patch didn't add any __asm__(".symver ...") lines to the .c files. Thus the resulting liblzma.so exports the threaded encoder functions under XZ_5.1.2alpha only. Listing the two functions also under XZ_5.2.2 in liblzma.map has no effect without matching .symver lines. The lack of XZ_5.2 in RHEL/CentOS 7 means that binaries linked against unpatched XZ Utils 5.2.x won't run on RHEL/CentOS 7. This is unfortunate but this alone isn't too bad as the problem is contained within RHEL/CentOS 7 and doesn't affect users of other distributions. It could also be fixed internally in RHEL/CentOS 7. The second problem is more serious: In XZ Utils 5.2.2 the API headers don't have #ifdef LZMA_UNSTABLE for obvious reasons. This is true in RHEL/CentOS 7 version too. Thus now programs using new APIs can be compiled without an extra #define. However, the programs end up depending on symbol version XZ_5.1.2alpha (and possibly also XZ_5.2.2) instead of XZ_5.2 as they would with an unpatched XZ Utils 5.2.2. This means that such binaries won't run on other distributions shipping XZ Utils >= 5.2.0 as they don't provide XZ_5.1.2alpha or XZ_5.2.2; they only provide XZ_5.2 (and XZ_5.0). (This includes RHEL/CentOS 8 as the patch luckily isn't included there anymore with XZ Utils 5.2.4.) Binaries built by RHEL/CentOS 7 users get distributed and then people wonder why they don't run on some other distribution. Seems that people have found out about the patch and been copying it to some build scripts, seemingly curing the symptoms but actually spreading the illness further and outside RHEL/CentOS 7. The ill patch seems to be from late 2016 (RHEL 7.3) and in 2017 it had spread at least to EasyBuild. I heard about the events only recently. :-( This commit splits liblzma.map into two versions: one for GNU/Linux and another for other OSes that can use symbol versioning (FreeBSD, Solaris, maybe others). The Linux-specific file and the matching additions to .c files add full compatibility with binaries that have been built against a RHEL/CentOS-patched liblzma. Builds for OSes other than GNU/Linux won't get the vaccine as they should be immune to the problem (I really hope that no build script uses the RHEL/CentOS 7 patch outside GNU/Linux). The RHEL/CentOS compatibility symbols XZ_5.1.2alpha and XZ_5.2.2 are intentionally put *after* XZ_5.2 in liblzma_linux.map. This way if one forgets to #define HAVE_SYMBOL_VERSIONS_LINUX when building, the resulting liblzma.so.5 will have lzma_stream_encoder_mt@@XZ_5.2 since XZ_5.2 {...} is the first one that lists that function. Without HAVE_SYMBOL_VERSIONS_LINUX @XZ_5.1.2alpha and @XZ_5.2.2 will be missing but that's still a minor problem compared to only having lzma_stream_encoder_mt@@XZ_5.1.2alpha! The "local: *;" line was moved to XZ_5.0 so that it doesn't need to be moved around. It doesn't matter where it is put. Having two similar liblzma_*.map files is a bit silly as it is, at least for now, easily possible to generate the generic one from the Linux-specific file. But that adds extra steps and increases the risk of mistakes when supporting more than one build system. So I rather maintain two files in parallel and let validate_map.sh check that they are in sync when "make mydist" is run. This adds .symver lines for lzma_stream_encoder_mt@XZ_5.2.2 and lzma_stream_encoder_mt_memusage@XZ_5.2.2 even though these weren't exported by RHEL/CentOS 7 (only @@XZ_5.1.2alpha was for these two). I added these anyway because someone might misunderstand the RHEL/CentOS 7 patch and think that @XZ_5.2.2 (@@XZ_5.2.2) versions were exported too. At glance one could suggest using __typeof__ to copy the function prototypes when making aliases. However, this doesn't work trivially because __typeof__ won't copy attributes (lzma_nothrow, lzma_pure) and it won't change symbol visibility from hidden to default (done by LZMA_API()). Attributes could be copied with __copy__ attribute but that needs GCC 9 and a fallback method would be needed anyway. This uses __symver__ attribute with GCC >= 10 and __asm__(".symver ...") with everything else. The attribute method is required for LTO (-flto) support with GCC. Using -flto with GCC older than 10 is now broken on GNU/Linux and will not be fixed (can silently result in a broken liblzma build that has dangerously incorrect symbol versions). LTO builds with Clang seem to work with the traditional __asm__(".symver ...") method. Thanks to Boud Roukema for reporting the problem and discussing the details and testing the fix.
2022-08-31CMake: Add xz symlinks.Lasse Collin1-1/+37
These are a minor thing especially since the xz build has some real problems still like lack of large file support on 32-bit systems but I'll commit this since the code exists. Thanks to Jia Tan.
2022-08-31CMake: Put xz man page install under if(UNIX) like is for xzdec.Lasse Collin1-3/+5
Thanks to Jia Tan.
2022-08-22Bump version number for 5.3.3alpha.larhzu/v5.3.3alphaLasse Collin2-2/+2
2022-08-22Add NEWS for 5.3.3alpha.Lasse Collin1-0/+119
2022-08-22Translations: Add Portuguese translation.Lasse Collin2-0/+1002
Jia Tan made white-space changes and also changed "Language: pt_BR\n" to pt. The translator wasn't reached so I'm hoping these changes are OK and will commit it without translator's approval. Thanks to Pedro Albuquerque and Jia Tan.
2022-08-22Translations: Add Serbian translation.Lasse Collin2-0/+988
Quite a few white-space changes were made by Jia Tan to make this look good. Contacting the translator didn't succeed so I'm committing this without getting translator's approval. Thanks to Мирослав Николић (Miroslav Nikolic) and Jia Tan.
2022-08-22Translations: Add Swedish translation.Lasse Collin2-0/+984
Thanks to Sebastian Rasmussen and Jia Tan.
2022-08-22Translations: Add Esperanto translation.Lasse Collin2-0/+985
Thanks to Keith Bowes and Jia Tan.
2022-08-22Translations: Add Catalan translation.Lasse Collin2-0/+1077
Thanks to Jordi Mas and Jia Tan.
2022-08-22Translations: Add Ukrainian translation.Lasse Collin2-0/+997
Thanks to Yuri Chornoivan and Jia Tan.
2022-08-22Translators: Add Romanian translation.Lasse Collin2-0/+1017
Thanks to Remus-Gabriel Chelu and Jia Tan.
2022-08-22Translations: Update Brazilian Portuguese translation.Lasse Collin1-94/+92
One msgstr was changed. The diff is long due to changes in the source code line numbers in the comments. Thanks to Rafael Fontenelle.
2022-08-22Translations: Add Croatian translation.Lasse Collin2-0/+988
Thanks to Božidar Putanec and Jia Tan.
2022-08-22Translations: Add Spanish translation.Lasse Collin2-0/+985
Thanks to Cristian Othón Martínez Vera and Jia Tan.
2022-08-22Translations: Add Korean translation.Lasse Collin2-0/+973
Thanks to Seong-ho Cho and Jia Tan.
2022-08-22Translations: Rebuild cs.po to avoid incorrect fuzzy strings.Lasse Collin1-270/+322
"make dist" updates the .po files and the fuzzy strings would result in multiple very wrong translations.
2022-08-22Translations: Add partial Danish translation.Lasse Collin2-0/+897
I made a few minor white space changes without getting them approved by the Danish translation team.
2022-08-22Translations: Add hu, zh_CN, and zh_TW.Lasse Collin4-0/+2907
I made a few white space changes to these without getting them approved by the translation teams. (I tried to contact the hu and zh_TW teams but didn't succeed. I didn't contact the zh_CN team.)
2022-08-22Translations: Update vi.po to match the file from the TP.Lasse Collin1-228/+179
The translated strings haven't been updated but word wrapping is different.
2022-08-22Translations: Add fi and pt_BR, and update de, fr, it, and pl.Lasse Collin7-746/+2697
The German translation isn't identical to the file in the Translation Project but the changes (white space changes only) were approved by the translator Mario Blättermann.
2022-08-22xz: Try to clarify --memlimit-mt-decompress vs. --memlimit-compress.Lasse Collin1-12/+19
2022-08-22CMake: Add liblzma tests.Lasse Collin1-1/+52
Thanks to Jia Tan for the patch.
2022-08-19xz: Revise --info-memory output.Lasse Collin2-6/+27
The strings could be more descriptive but it's good to have some version of this committed now. --robot mode wasn't changed yet.
2022-08-19xz: Update the man page for threaded decompression and memlimits.Lasse Collin1-27/+121
This documents the changes made in commits 6c6da57ae2aa962aabde6892442227063d87e88c, cad299008cf73ec566f0662a9cf2b94f86a99659, and 898faa97287a756231c663a3ed5165672b417207. The --info-memory bit hasn't been finished yet even though it's already mentioned in this commit under --memlimit-mt-decompress and --threads.
2022-08-18Build: Include the CMake files in the distribution.Lasse Collin1-0/+2
This was supposed to be done in 2020 with 5.2.5 release already but it was noticed only today. 5.2.5 and 5.2.6 even mention experiemental CMake support in the NEWS entries. Thanks to Olivier B. for reporting the problem.
2022-08-18Windows: Fix broken liblzma.dll build with Visual Studio project files.Lasse Collin3-0/+18
The bug was introduced in 352ba2d69af2136bc814aa1df1a132559d445616 "Windows: Fix building of resource files when config.h isn't used." That commit fixed liblzma.dll build with CMake while keeping it working with Autotools on Windows but the VS project files were forgotten. I haven't tested these changes. Thanks to Olivier B. for reporting the bug and for the initial patch.
2022-08-18liblzma: Threaded decoder: Improve LZMA_FAIL_FAST when LZMA_FINISH is used.Lasse Collin2-0/+48
It will now return LZMA_DATA_ERROR (not LZMA_OK or LZMA_BUF_ERROR) if LZMA_FINISH is used and there isn't enough input to finish decoding the Block Header or the Block. The use of LZMA_DATA_ERROR is simpler and the less risky than LZMA_BUF_ERROR but this might be changed before 5.4.0.
2022-08-12Add NEWS for 5.2.6.Lasse Collin1-0/+121
2022-08-12Add Jia Tan to AUTHORS.Lasse Collin1-1/+1
2022-07-25Build: Start the generated ChangeLog from around 5.2.0 instead of 5.0.0.Lasse Collin1-1/+1
This makes ChangeLog smaller.
2022-07-25Translations: Change the copyright comment string to use with po4a.Lasse Collin1-1/+1
This affects the second line in po4a/xz-man.pot. The man pages of xzdiff, xzgrep, and xzmore are from GNU gzip and under GNU GPLv2+ while the rest of the man pages are in the public domain.
2022-07-25liblzma: Refactor lzma_mf_is_supported() to use a switch-statement.Jia Tan1-18/+14
2022-07-25Build: Don't allow empty LIST in --enable-match-finders=LIST.Jia Tan1-0/+4
It's enforced only when a match finder is needed, that is, when LZMA1 or LZMA2 encoder is enabled.
2022-07-24xz: Update the man page that change to --keep will be in 5.2.6.Lasse Collin1-2/+2
2022-07-19Update THANKS.Lasse Collin1-0/+1
2022-07-19CMake: Add missing source file to liblzma buildNicholas Jackson1-0/+1
2022-07-19xzgrep man page: Document exit statuses.Lasse Collin1-1/+14
2022-07-19xzgrep: Improve error handling, especially signals.Lasse Collin1-19/+53
xzgrep wouldn't exit on SIGPIPE or SIGQUIT when it clearly should have. It's quite possible that it's not perfect still but at least it's much better. If multiple exit statuses compete, now it tries to pick the largest of value. Some comments were added. The exit status handling of signals is still broken if the shell uses values larger than 255 in $? to indicate that a process died due to a signal ***and*** their "exit" command doesn't take this into account. This seems to work well with the ksh and yash versions I tried. However, there is a report in gzip/zgrep that OpenSolaris 5.11 (not 5.10) has a problem with "exit" truncating the argument to 8 bits: https://debbugs.gnu.org/cgi/bugreport.cgi?bug=22900#25 Such a bug would break xzgrep but I didn't add a workaround at least for now. 5.11 is old and I don't know if the problem exists in modern descendants, or if the problem exists in other ksh implementations in use.
2022-07-19xzgrep: Make the fix for ZDI-CAN-16587 more robust.Lasse Collin1-1/+4
I don't know if this can make a difference in the real world but it looked kind of suspicious (what happens with sed implementations that cannot process very long lines?). At least this commit shouldn't make it worse.
2022-07-18xzgrep: Use grep -H --label when available (GNU, *BSDs).Lasse Collin1-0/+21
It avoids the use of sed for prefixing filenames to output lines. Using sed for that is slower and prone to security bugs so now the sed method is only used as a fallback. This also fixes an actual bug: When grepping a binary file, GNU grep nowadays prints its diagnostics to stderr instead of stdout and thus the sed-method for prefixing the filename doesn't work. So with this commit grepping binary files gives reasonable output with GNU grep now. This was inspired by zgrep but the implementation is different.
2022-07-18xzgrep: Use -e to specify the pattern to grep.Lasse Collin1-8/+4
Now we don't need the separate test for adding the -q option as it can be added directly in the two places where it's needed.
2022-07-18Scripts: Use printf instead of echo in a few places.Lasse Collin4-11/+11
It's a good habbit as echo has some portability corner cases when the string contents can be anything.
2022-07-17xzgrep: Add more LC_ALL=C to avoid bugs with multibyte characters.Lasse Collin1-6/+8
Also replace one use of expr with printf. The rationale for LC_ALL=C was already mentioned in 69d1b3fc29677af8ade8dc15dba83f0589cb63d6 that fixed a security issue. However, unrelated uses weren't changed in that commit yet. POSIX says that with sed and such tools one should use LC_ALL=C to ensure predictable behavior when strings contain byte sequences that aren't valid multibyte characters in the current locale. See under "Application usage" in here: https://pubs.opengroup.org/onlinepubs/9699919799/utilities/sed.html With GNU sed invalid multibyte strings would work without this; it's documented in its Texinfo manual. Some other implementations aren't so forgiving.
2022-07-17xzgrep: Fix parsing of certain options.Lasse Collin1-2/+17
Fix handling of "xzgrep -25 foo" (in GNU grep "grep -25 foo" is an alias for "grep -C25 foo"). xzgrep would treat "foo" as filename instead of as a pattern. This bug was fixed in zgrep in gzip in 2012. Add -E, -F, -G, and -P to the "no argument required" list. Add -X to "argument required" list. It is an intentionally-undocumented GNU grep option so this isn't an important option for xzgrep but it seems that other grep implementations (well, those that I checked) don't support -X so I hope this change is an improvement still. grep -d (grep --directories=ACTION) requires an argument. In contrast to zgrep, I kept -d in the "no argument required" list because it's not supported in xzgrep (or zgrep). This way "xzgrep -d" gives an error about option being unsupported instead of telling that it requires an argument. Both zgrep and xzgrep tell that it's unsupported if an argument is specified. Add comments.
2022-07-14Tests: Add the .lzma files to test_files.sh.Lasse Collin1-0/+20
2022-07-14Tests: Add .lzma test files.Lasse Collin9-13/+50
2022-07-14liblzma: Rename a variable and improve a comment.Lasse Collin1-4/+9
2022-07-13Update THANKS.Lasse Collin1-0/+1
2022-07-13liblzma: Add optional autodetection of LZMA end marker.Lasse Collin7-39/+95
Turns out that this is needed for .lzma files as the spec in LZMA SDK says that end marker may be present even if the size is stored in the header. Such files are rare but exist in the real world. The code in liblzma is so old that the spec didn't exist in LZMA SDK back then and I had understood that such files weren't possible (the lzma tool in LZMA SDK didn't create such files). This modifies the internal API so that LZMA decoder can be told if EOPM is allowed even when the uncompressed size is known. It's allowed with .lzma and not with other uses. Thanks to Karl Beldan for reporting the problem.
2022-07-12xz: Document the special memlimit case of 2000 MiB on MIPS32.Lasse Collin1-2/+6
See commit fc3d3a7296ef58bb799a73943636b8bfd95339f7.
2022-07-10Created script to generate code coverage reports.Jia Tan2-0/+83
The script uses lcov and genhtml after running the tests to show the code coverage statistics. The script will create a coverage directory where it is run. It can be run both in and out of the source directory.
2022-06-16Tests: Add more tests into test_check.Jia Tan2-7/+295
2022-06-16Tests: Use char[][24] array for enum_strings_lzma_ret.Lasse Collin1-1/+1
Array of pointers to short strings is a bit pointless here and now it's fully const.
2022-06-16Tests: tuktest.h: Add tuktest_error_impl to help with error conditions.Lasse Collin1-40/+32
2022-06-16Tests: tuktest.h: Rename file_from_* and use tuktest_malloc there.Lasse Collin2-31/+25
2022-06-16Tests: tuktest.h: Add malloc wrapper with automatic freeing.Lasse Collin1-0/+124
2022-06-16Tests: tuktest.h: Move a function.Lasse Collin1-22/+22
2022-06-14Tests: test_vli: Remove an invalid test-assertion.Lasse Collin1-2/+0
lzma_vli is unsigned so trying a signed value results in a compiler warning from -Wsign-conversion. (lzma_vli)-1 equals to LZMA_VLI_UNKNOWN anyway which is the next assertion.
2022-06-14Tests: test_vli: Add const where appropriate.Lasse Collin1-25/+28
2022-06-14Added vli tests to .gitignoreJia Tan1-0/+1
2022-06-14Created tests for all functions exported in vli.hJia Tan2-1/+311
Achieved 100% code coverage vli_encoder.c, vli_decoder.c, and vli_size.c
2022-06-14Added parallel test artifacts to .gitignorejiat751-0/+2
2022-06-14Tests: Use good-1-empty-bcj-lzma2.xz in test_bcj_exact_size.Lasse Collin1-12/+7
It's much nicer this way so that the test data isn't a hardcoded table inside the C file.
2022-06-14Tests: Add file reading helpers to tuktest.h.Lasse Collin1-7/+176
2022-06-14Tests: tuktest.h: Move a printf from a macro to a helper function.Lasse Collin1-8/+18
2022-06-14Tests: Add test file good-1-empty-bcj-lzma2.xz.Lasse Collin2-0/+5
This is from test_bcj_exact_size.c. It's good to have it as a standalone file.
2022-06-10Tests: Created tests for hardware functions.Jia Tan3-0/+48
Created tests for all API functions exported in src/liblzma/api/lzma/hardware.h. The tests are fairly trivial but are helpful because they will inform users if their machines cannot support these functions. They also improve the code coverage metrics.
2022-06-02Tests: Convert test_check to tuktest.Lasse Collin1-34/+33
Thanks to Jia Tan for help with all the tests.
2022-06-02Tests: Convert test_block_header to tuktest.Lasse Collin1-37/+52
2022-06-02Tests: Convert test_bcj_exact_size to tuktest.Lasse Collin1-34/+41
The compress() and decompress() functions were merged because the later depends on the former so they need to be a single test case.
2022-06-02Tests: Include tuktest.h in tests.h.Lasse Collin1-24/+23
This breaks -Werror because none of the tests so far use tuktest.h and thus there are warnings about unused variables and functions.
2022-06-02Tests: Add tuktest.h mini-test-framework.Lasse Collin2-0/+753
2022-05-23Build: Enable Automake's parallel test harness.Lasse Collin1-1/+1
It has been the default for quite some time already and the old serial harness isn't discouraged. The downside is that with parallel tests one cannot print progress info or other diagnostics to the terminal; all output from the tests will be in the log files only. But now that the compression tests are separated the parallel tests will speed things up.
2022-05-23Tests: Split test_compress.sh into separate test unit for each file.Lasse Collin7-40/+77
test_compress.sh now takes one command line argument: a filename to be tested. If it begins with "compress_generated_" the file will be created with create_compress_files. This will allow parallel execution of the slow tests.
2022-05-23Test: Make create_compress_files.c a little more flexible.Lasse Collin1-10/+15
If a command line argument is given, then only the test file of that type is created. It's quite dumb in sense that unknown names don't give an error but it's good enough here. Also use EXIT_FAILURE instead of 1 as exit status for errors.
2022-05-23Tests: Remove unneeded commented lines from test_compress.sh.Lasse Collin1-13/+0
2022-05-23Tests: Remove progress indicator from test_compress.sh.Lasse Collin1-9/+0
It will be useless with Automake's parallel tests.
2022-05-23liblzma: Silence a warning.Lasse Collin1-1/+1
The actual initialization is done via mythread_sync and seems that GCC doesn't necessarily see that it gets initialized there.
2022-04-14xz: Fix build with --disable-threads.Lasse Collin1-0/+4
2022-04-14xz: Change the cap of the default -T0 memlimit for 32-bit xz.Lasse Collin1-1/+3
The SIZE_MAX / 3 was 1365 MiB. 1400 MiB gives little more room and it looks like a round (artificial) number in --info-memory once --info-memory is made to display it. Also, using #if avoids useless code on 64-bit builds.
2022-04-14xz: Add a default soft memory usage limit for --threads=0.Lasse Collin3-11/+82
This is a soft limit in sense that it only affects the number of threads. It never makes xz fail and it never makes xz change settings that would affect the compressed output. The idea is to make -T0 have more reasonable behavior when the system has very many cores or when a memory-hungry compression options are used. This also helps with 32-bit xz, preventing it from running out of address space. The downside of this commit is that now the number of threads might become too low compared to what the user expected. I hope this to be an acceptable compromise as the old behavior has been a source of well-argued complaints for a long time.
2022-04-14xz: Make -T0 use multithreaded mode on single-core systems.Lasse Collin3-9/+27
The main problem withi the old behavior is that the compressed output is different on single-core systems vs. multicore systems. This commit fixes it by making -T0 one thread in multithreaded mode on single-core systems. The downside of this is that it uses more memory. However, if --memlimit-compress is used, xz can (thanks to the previous commit) drop to the single-threaded mode still.
2022-04-14xz: Changes to --memlimit-compress and --no-adjust.Lasse Collin1-20/+43
In single-threaded mode, --memlimit-compress can make xz scale down the LZMA2 dictionary size to meet the memory usage limit. This obviously affects the compressed output. However, if xz was in threaded mode, --memlimit-compress could make xz reduce the number of threads but it wouldn't make xz switch from multithreaded mode to single-threaded mode or scale down the LZMA2 dictionary size. This seemed illogical and there was even a "FIXME?" about it. Now --memlimit-compress can make xz switch to single-threaded mode if one thread in multithreaded mode uses too much memory. If memory usage is still too high, then the LZMA2 dictionary size can be scaled down too. The option --no-adjust was also changed so that it no longer prevents xz from scaling down the number of threads as that doesn't affect compressed output (only performance). After this commit --no-adjust only prevents adjustments that affect compressed output, that is, with --no-adjust xz won't switch from multithreaded mode to single-threaded mode and won't scale down the LZMA2 dictionary size. The man page wasn't updated yet.
2022-04-12xz: Add --memlimit-mt-decompress along with a default limit value.Lasse Collin5-42/+97
--memlimit-mt-decompress allows specifying the limit for multithreaded decompression. This matches memlimit_threading in liblzma. This limit can only affect the number of threads being used; it will never prevent xz from decompressing a file. The old --memlimit-decompress option is still used at the same time. If the value of --memlimit-decompress (the default value or one specified by the user) is less than the value of --memlimit-mt-decompress , then --memlimit-mt-decompress is reduced to match --memlimit-decompress. Man page wasn't updated yet.
2022-04-06liblzma: Threaded decoder: Improve setting of pending_error.Lasse Collin1-16/+35
It doesn't need to be done conditionally. The comments try to explain it.
2022-04-06liblzma: Add a new flag LZMA_FAIL_FAST for threaded decoder.Lasse Collin3-26/+56
In most cases if the input file is corrupt the application won't care about the uncompressed content at all. With this new flag the threaded decoder will return an error as soon as any thread has detected an error; it won't wait to copy out the data before the location of the error. I don't plan to use this in xz to keep the behavior consistent between single-threaded and multi-threaded modes.
2022-04-05liblzma: Threaded decoder: Always wait for output if LZMA_FINISH is used.Lasse Collin1-2/+24
This makes the behavior consistent with the single-threaded decoder when handling truncated .xz files. Thanks to Jia Tan for finding this issue.
2022-04-02liblzma: Threaded decoder: Support zpipe.c-style decoding loop.Lasse Collin1-10/+67
This makes it possible to call lzma_code() in a loop that only reads new input when lzma_code() didn't fill the output buffer completely. That isn't the calling style suggested by the liblzma example program 02_decompress.c so perhaps the usefulness of this feature is limited. Also, it is possible to write such a loop so that it works with the single-threaded decoder but not with the threaded decoder even after this commit, or so that it works only if lzma_mt.timeout = 0. The zlib tutorial <https://zlib.net/zlib_how.html> is a well-known example of a loop where more input is read only when output isn't full. Porting this as is to liblzma would work with the single-threaded decoder (if LZMA_CONCATENATED isn't used) but it wouldn't work with threaded decoder even after this commit because the loop assumes that no more output is possible when it cannot read more input ("if (strm.avail_in == 0) break;"). This cannot be fixed at liblzma side; the loop has to be modified at least a little. I'm adding this in any case because the actual code is simple and short and should have no harmful side-effects in other situations.
2022-03-31Update THANKS.Lasse Collin1-0/+1
2022-03-29xzgrep: Fix escaping of malicious filenames (ZDI-CAN-16587).Lasse Collin1-8/+12
Malicious filenames can make xzgrep to write to arbitrary files or (with a GNU sed extension) lead to arbitrary code execution. xzgrep from XZ Utils versions up to and including 5.2.5 are affected. 5.3.1alpha and 5.3.2alpha are affected as well. This patch works for all of them. This bug was inherited from gzip's zgrep. gzip 1.12 includes a fix for zgrep. The issue with the old sed script is that with multiple newlines, the N-command will read the second line of input, then the s-commands will be skipped because it's not the end of the file yet, then a new sed cycle starts and the pattern space is printed and emptied. So only the last line or two get escaped. One way to fix this would be to read all lines into the pattern space first. However, the included fix is even simpler: All lines except the last line get a backslash appended at the end. To ensure that shell command substitution doesn't eat a possible trailing newline, a colon is appended to the filename before escaping. The colon is later used to separate the filename from the grep output so it is fine to add it here instead of a few lines later. The old code also wasn't POSIX compliant as it used \n in the replacement section of the s-command. Using \<newline> is the POSIX compatible method. LC_ALL=C was added to the two critical sed commands. POSIX sed manual recommends it when using sed to manipulate pathnames because in other locales invalid multibyte sequences might cause issues with some sed implementations. In case of GNU sed, these particular sed scripts wouldn't have such problems but some other scripts could have, see: info '(sed)Locale Considerations' This vulnerability was discovered by: cleemy desu wayo working with Trend Micro Zero Day Initiative Thanks to Jim Meyering and Paul Eggert discussing the different ways to fix this and for coordinating the patch release schedule with gzip.
2022-03-26liblzma: Fix a deadlock in threaded decoder.Lasse Collin1-19/+52
If a worker thread has consumed all input so far and it's waiting on thr->cond and then the main thread enables partial update for that thread, the code used to deadlock. This commit allows one dummy decoding pass to occur in this situation which then also does the partial update. As part of the fix, this moves thr->progress_* updates to avoid the second thr->mutex locking. Thanks to Jia Tan for finding, debugging, and reporting the bug.
2022-03-23Update THANKS.Lasse Collin1-0/+1
2022-03-23liblzma: Threaded decoder: Don't stop threads on LZMA_TIMED_OUT.Lasse Collin1-1/+1
LZMA_TIMED_OUT is not an error and thus stopping threads on LZMA_TIMED_OUT breaks the decoder badly. Thanks to Jia Tan for finding the bug and for the patch.
2022-03-07xz: Add initial support for threaded decompression.Lasse Collin1-1/+35
If threading support is enabled at build time, this will use lzma_stream_decoder_mt() even for single-threaded mode. With memlimit_threading=0 the behavior should be identical. This needs some work like adding --memlimit-threading=LIMIT. The original patch from Sebastian Andrzej Siewior included a method to get currently available RAM on Linux. It might be one way to go but as it is Linux-only, the available-RAM approach needs work for portability or using a fallback method on other OSes. The man page wasn't updated yet.
2022-03-07liblzma: Add threaded .xz decompressor.Lasse Collin5-7/+1907
I realize that this is about a decade late. Big thanks to Sebastian Andrzej Siewior for the original patch. I made a bunch of smaller changes but after a while quite a few things got rewritten. So any bugs in the commit were created by me.
2022-03-06liblzma: Fix docs: lzma_block_decoder() cannot return LZMA_UNSUPPORTED_CHECK.Lasse Collin1-3/+0
If Check is unsupported, it will be silently ignored. It's the caller's job to handle it.
2022-03-06liblzma: Add new output queue (lzma_outq) features.Lasse Collin2-8/+79
Add lzma_outq_clear_cache2() which may leave one buffer allocated in the cache. Add lzma_outq_outbuf_memusage() to get the memory needed for a single lzma_outbuf. This is now used internally in outqueue.c too. Track both the total amount of memory allocated and the amount of memory that is in active use (not in cache). In lzma_outbuf, allow storing the current input position that matches the current output position. This way the main thread can notice when no more output is possible without first providing more input. Allow specifying return code for lzma_outq_read() in a finished lzma_outbuf.
2022-03-06liblzma: Index hash: Change return value type of hash_append() to void.Lasse Collin1-6/+5
2022-02-22liblzma: Minor addition to lzma_vli_size() API doc.Lasse Collin1-0/+2
Thanks to Jia Tan.