This is closer to what it was before the --filtersX support was added,
just extended to support for scaling all filter chains. The method
before this commit was an extended version of the original too but
it was done in a more complex way for no clear reason. In case of
an error, the complex version printed fewer informative messages
(a good thing) but it's not a sigificant benefit.
In the limit is too low even for single-threaded mode, the required
amount of memory is now reported like in 5.4.x instead of like in
5.5.1alpha - 5.6.1 which showed the original non-scaled usage. It
had been a FIXME in the old code but it's not clear what message
makes the most sense.
Fixes: 5f0c5a0438
(cherry picked from commit d9e1ae79ec)
It's more logical to do it in the beginning instead of in the middle
of the filter chain handling.
Fixes: d6af7f3470
(cherry picked from commit 32500dfaad)
The convention is that
lzma_filter filters[LZMA_FILTERS_MAX + 1];
contains the filters of a single filter chain.
It was so here as well before the commit
d6af7f3470.
It changes "filters" to a ten-element array of filter chains.
It's clearer to call this array-of-arrays "chains".
This also renames "filter_idx" to "chain_idx" which is used
as an index as in chains[chain_idx].
(cherry picked from commit ad146b1f42)
opt_mode == MODE_COMPRESS isn't possible when HAVE_ENCODERS isn't
defined. Thus, when *encoding*, the message about *decoder* memory
usage is possible to show only when both encoder and decoder have
been built.
Since the message is shown only at V_DEBUG, skip the memusage
calculation if verbosity level isn't high enough.
Fixes: 5f0c5a0438
(cherry picked from commit 347b412a93)
Since 5.3.5beta, "xz --lzma2=mf=bt4,nice=2" works even though bt4 needs
at least nice=4. It is rounded up internally by liblzma when needed.
Fixes: 5cd9f0df78
(cherry picked from commit 3f71e0f3a1)
These are temporary files that are needed only when running po4a.
The top-level Makefile.am puts the whole po4a directory into
distribution tarball (it's simpler) so deleting these temporary
files is needed to prevent them from getting into tarballs.
(cherry picked from commit ab51e8ee61)
The latest stable is 3.3.0 and it's from 2014.
Don't mention the older versions in INSTALL.
3.3.0 ships with Clang already.
Testing with 3.4.0beta6 shows that tuklib_physmem
works too so omit comments about that from INSTALL.
Visibility warnigns weren't a problem either.
Thus it's enough to mention the need for --disable-threads
as configure doesn't autodetect the lack of pthreads.
(cherry picked from commit 50e1948938)
It was copied if it existed. This was intentional when autogen.sh
still built liblzma API docs with Doxygen.
Fixes: d3a77ebc04
(cherry picked from commit 8ede961374)
This was added to xz in 02e3505991
but I forgot to do the same in xzdec.
The Landlock sandbox in xzdec could be stricter as now it's
active only for the last file being decompressed. In xz,
read-only sandbox is used for multi-file case. On the other hand,
xz doesn't go to the strictest mode when processing the last file
when more than one file was specified; xzdec does.
(cherry picked from commit 3334c71d3d)
Clang 17 with -fsanitize=address,undefined:
src/liblzma/common/filter_common.c:366:8: runtime error:
call to function encoder_find through pointer to incorrect
function type 'const lzma_filter_coder *(*)(unsigned long)'
src/liblzma/common/filter_encoder.c:187: note:
encoder_find defined here
Use a wrapper function to get the correct type neatly.
This reduces the number of casts needed too.
This issue could be a problem with control flow integrity (CFI)
methods that check the function type on indirect function calls.
Fixes: 3b34851de1
(cherry picked from commit 278563ef8f)
It's undefined behavior. The result wasn't ever used as it occurred
in the last iteration of a loop.
Clang 17 with -fsanitize=address,undefined:
$ src/xz/xz --block-list=123
src/xz/args.c:164:12: runtime error: applying non-zero offset 1
to null pointer
Fixes: 88ccf47205
Co-authored-by: Sam James <sam@gentoo.org>
(cherry picked from commit 77c8f60547)
This is disabled by default to match the default in Autotools.
Use -DUSE_DOXYGEN=ON to enable Doxygen usage.
This uses the update-doxygen script, thus this is under if(UNIX)
although Doxygen itself can run on Windows too.
(cherry picked from commit 64503cc2b7)
This omits all comments and a few non-default options that weren't
needed. Now it contains no copyrighted content from Doxygen itself.
(cherry picked from commit 2c519f641f)
Lasse Collin
Sam James
Yaroslav Halchenko