Commit Graph

56 Commits

Author SHA1 Message Date
Jia Tan 328c52da8a Build: Fix Linux Landlock feature test in Autotools and CMake builds.
The previous Linux Landlock feature test assumed that having the
linux/landlock.h header file was enough. The new feature tests also
requires that prctl() and the required Landlock system calls are
supported.
2024-02-26 23:27:44 +08:00
Lasse Collin 22af94128b Add SPDX license identifier into 0BSD source code files. 2024-02-14 18:31:16 +02:00
Lasse Collin 689e0228ba Change most public domain parts to 0BSD.
Translations and doc/xz-file-format.txt and doc/lzma-file-format.txt
were not touched.

COPYING.0BSD was added.
2024-02-14 18:31:12 +02:00
Jia Tan 22d86192f8 xz: Update website URLs in the man pages. 2024-01-19 23:08:14 +08:00
Jia Tan d74fb5f060 xzdec: Add sandbox support for Pledge, Capsicum, and Landlock.
A very strict sandbox is used when the last file is decompressed. The
likely most common use case of xzdec is to decompress a single file.
The Pledge sandbox is applied to the entire process with slightly more
relaxed promises, until the last file is processed.

Thanks to Christian Weisgerber for the initial patch adding Pledge
sandboxing.
2023-12-19 21:18:28 +08:00
Lasse Collin 217958d887 xz, xzdec, lzmainfo: Use tuklib_attr_noreturn.
For compatibility with C23's [[noreturn]], tuklib_attr_noreturn
must be at the beginning of declaration (before "extern" or
"static", and even before any GNU C's __attribute__).

This commit also moves all other function attributes to
the beginning of function declarations. "extern" is kept
at the beginning of a line so the attributes are listed on
separate lines before "extern" or "static".
2023-09-22 20:06:27 +03:00
Kelvin Lee c4edd36767 MSVC: xzdec: Use _fileno and _setmode. 2023-09-22 20:00:37 +03:00
Kelvin Lee cfd1054b9b MSVC: Don't #include <unistd.h>. 2023-09-22 20:00:37 +03:00
Lasse Collin 6f7211b6bb Build: Add support for translated man pages using po4a.
The dependency on po4a is optional. It's never required to install
the translated man pages when xz is built from a release tarball.
If po4a is missing when building from xz.git, the translated man
pages won't be generated but otherwise the build will work normally.

The translations are only updated automatically by autogen.sh and
by "make mydist". This makes it easy to keep po4a as an optional
dependency and ensures that I won't forget to put updated
translations to a release tarball.

The translated man pages aren't installed if --disable-nls is used.

The installation of translated man pages abuses Automake internals
by calling "install-man" with redefined dist_man_MANS and man_MANS.
This makes the hairy script code slightly less hairy. If it breaks
some day, this code needs to be fixed; don't blame Automake developers.

Also, this adds more quotes to the existing shell script code in
the Makefile.am "-hook"s.
2020-02-07 15:32:21 +02:00
Lasse Collin 07c4fa9e1a xzdec: Fix warnings from -Wsign-conversion. 2019-06-23 21:40:47 +03:00
Lasse Collin 662b27c417 Update the home page URLs to HTTPS. 2017-04-19 22:17:35 +03:00
Lasse Collin c923b140b2 Build: Prepare to support Automake's subdir-objects.
Due to a bug in Automake, subdir-objects won't be enabled
for now.

http://debbugs.gnu.org/cgi/bugreport.cgi?bug=17354

Thanks to Daniel Richard G. for the original patches.
2014-10-29 21:15:35 +02:00
Lasse Collin 1555a9c566 Build: Fix the combination of --disable-xzdec --enable-lzmadec.
In this case "make install" could fail if the man page directory
didn't already exist at the destination. If it did exist, a
dangling symlink was created there. Now the link is omitted
instead. This isn't the best fix but it's better than the old
behavior.
2014-04-25 17:53:42 +03:00
Lasse Collin a37ae8b5eb Man pages: Use similar syntax for synopsis as in xz.
The man pages of lzmainfo, xzmore, and xzdec had similar
constructs as the man page of xz had before the commit
eb6ca9854b. Eric S. Raymond
didn't mention these man pages in his bug report, but
it's nice to be consistent.
2013-06-30 18:02:27 +03:00
Lasse Collin 8957c58609 xzdec: Improve the --help message.
The options are now ordered in the same order as in xz's help
message.

Descriptions were added to the options that are ignored.
I left them in parenthesis even if it looks a bit weird
because I find it easier to spot the ignored vs. non-ignored
options from the list that way.
2013-04-15 19:29:09 +03:00
Lasse Collin 4c6e146df9 Add underscores to attributes (__attribute((__foo__))). 2011-05-17 11:54:38 +03:00
Lasse Collin 389d418445 Add missing public domain notice to lzmadec_w32res.rc. 2010-10-09 12:57:25 +03:00
Lasse Collin b1c7368f95 Build: Add options to disable individual command line tools. 2010-10-08 15:25:45 +03:00
Lasse Collin f9907503f8 Build: Remove the static/dynamic tricks.
Most distros want xz linked against shared liblzma, so
it doesn't help much to require --enable-dynamic for that.
Those who want to avoid PIC on x86-32 to get better
performance, can still do it e.g. by using --disable-shared
to compile xz and then another pass to compile shared liblzma.

Part of these static/dynamic tricks were needed for Windows
in the past. Nowadays we rely on GCC and binutils to do the
right thing with auto-import. If the Autotooled build system
needs to support some other toolchain on Windows in the future,
this may need some rethinking.
2010-10-05 14:13:16 +03:00
Lasse Collin cec0ddc8ec Major man page updates.
Lots of content was updated on the xz man page.

Technical improvements:
  - Start a new sentence on a new line.
  - Use fairly short lines.
  - Use constant-width font for examples (where supported).
  - Some minor cleanups.

Thanks to Jonathan Nieder for some language fixes.
2010-09-27 23:29:34 +03:00
Lasse Collin 792331bdee Disable the memory usage limiter by default.
For several people, the limiter causes bigger problems that
it solves, so it is better to have it disabled by default.
Those who want to have a limiter by default need to enable
it via the environment variable XZ_DEFAULTS.

Support for environment variable XZ_DEFAULTS was added. It is
parsed before XZ_OPT and technically identical with it. The
intended uses differ quite a bit though; see the man page.

The memory usage limit can now be set separately for
compression and decompression using --memlimit-compress and
--memlimit-decompress. To set both at once, -M or --memlimit
can be used. --memory was retained as a legacy alias for
--memlimit for backwards compatibility.

The semantics of --info-memory were changed in backwards
incompatible way. Compatibility wasn't meaningful due to
changes in the memory usage limiter functionality.

The memory usage limiter info is no longer shown at the
bottom of xz --long -help.

The memory usage limiter support for removed completely from xzdec.

xz's man page was updated to match the above changes. Various
unrelated fixes were also made to the man page.
2010-08-07 20:45:18 +03:00
Lasse Collin e1b6935d60 Fix string to uint64_t conversion.
Thanks to Denis Excoffier for the bug report.
2010-06-11 21:43:28 +03:00
Lasse Collin cf38da00a1 Treat all integer multiplier suffixes as base-2.
Originally both base-2 and base-10 were supported, but since
there seems to be little need for base-10 in XZ Utils, treat
everything as base-2 and also be more relaxed about the case
of the first letter of the suffix. Now xz will accept e.g.
KiB, Ki, k, K, kB, and KB, and interpret them all as 1024. The
recommended spelling of the suffixes are still KiB, MiB, and GiB.
2010-03-07 13:59:32 +02:00
Lasse Collin 00fc1211ae Consistently round up the memory usage limit in messages.
It still feels a bit wrong to round 1 byte to 1 MiB but
at least it is now done consistently so that the same
byte value is always rounded the same way to MiB.
2010-03-07 13:50:23 +02:00
Lasse Collin 2672bcc9f8 Increase the default memory usage limit on "low-memory" systems.
Previously the default limit was always 40 % of RAM. The
new limit is a little bit more complex:

  - If 40 % of RAM is at least 80 MiB, 40 % of RAM is used
    as the limit.

  - If 80 % of RAM is over 80 MiB, 80 MiB is used as the limit.

  - Otherwise 80 % of RAM is used as the limit.

This should make it possible to decompress files created with
"xz -9" on more systems. Swapping is generally more expected
on systems with less RAM, so higher default limit on them
shouldn't cause too bad surprises in terms of heavy swapping.
Instead, the higher default limit should reduce the number of
bad surprises when it used to prevent decompression of files
created with "xz -9". The DoS prevention system shouldn't be
a DoS itself.

Note that even with the new default limit, a system with 64 MiB
RAM cannot decompress files created with "xz -9" without user
overriding the limit. This should be OK, because if xz is going
to need more memory than the system has RAM, it will run very
very slowly and thus it's good that user has to override the limit
in that case.
2010-03-07 13:29:28 +02:00
Lasse Collin eb7d51a3fa Collection of language fixes to comments and docs.
Thanks to Jonathan Nieder.
2010-02-12 13:16:15 +02:00
Lasse Collin b063cc34a3 Use PACKAGE_URL instead of custom PACKAGE_HOMEPAGE. 2010-01-27 13:31:03 +02:00
Lasse Collin 93e418562c Add lzma_physmem().
I had hoped to keep liblzma as purely a compression
library as possible (e.g. file I/O will go into
a different library), but it seems that applications
linking agaisnt liblzma need some way to determine
the memory usage limit, and knowing the amount of RAM
is one reasonable way to help making such decisions.

Thanks to Jonathan Nieder for the original patch.
2009-11-15 12:40:17 +02:00
Lasse Collin 29fd321033 Add support for --enable-assume-ram=SIZE. 2009-10-02 14:35:56 +03:00
Lasse Collin e599bba421 Various changes.
Separate a few reusable components from XZ Utils specific
code. The reusable code is now in "tuklib" modules. A few
more could be separated still, e.g. bswap.h.

Fix some bugs in lzmainfo.

Fix physmem and cpucores code on OS/2. Thanks to Elbert Pol
for help.

Add OpenVMS support into physmem. Add a few #ifdefs to ease
building XZ Utils on OpenVMS. Thanks to Jouk Jansen for the
original patch.
2009-09-19 09:47:30 +03:00
Lasse Collin 4ab7b16b95 A few grammar fixes.
Thanks to Christian Weisgerber for pointing out some of these.
2009-09-12 14:07:36 +03:00
Lasse Collin a4165d0584 Sync some error messages from xz to xzdec.
Make xz error message translation usable outside
xz (at least in upcoming lzmainfo).
2009-08-13 12:42:36 +03:00
Lasse Collin 64e498c89d Added public domain notice into a few files. 2009-07-18 11:26:39 +03:00
Lasse Collin 3bdb53792c Remove --force from xzdec.
It was ignored for compatibility with xz, but now that
--decompress --stdout --force copies unrecognized files
as is to stdout, simply ignoring --force in xzdec would
be wrong. xzdec will not support copying unrecognized
data as is to stdout, so it cannot support --force.
2009-07-08 22:50:16 +03:00
Lasse Collin 5f16ef4abf Use sed instead of $(SED) so that we don't need to
use AC_PROG_SED. We don't do anything fancy with sed,
so this should work OK. libtool 2.2 sets SED but 1.5
doesn't, so $(SED) happened to work when using libtool 2.2.
2009-07-06 10:36:04 +03:00
Lasse Collin 0a289c01ac Define PACKAGE_HOMEPAGE in configure.ac and use it in
xz and xzdec.

Use also PACKAGE_NAME instead of hardcoding "XZ Utils".
2009-07-02 14:30:38 +03:00
Lasse Collin f42ee98166 Build system fixes
Don't use libtool convenience libraries to avoid recently
discovered long-standing subtle but somewhat severe bugs
in libtool (at least 1.5.22 and 2.2.6 are affected). It
was found when porting XZ Utils to Windows
<http://lists.gnu.org/archive/html/libtool/2009-06/msg00070.html>
but the problem is significant also e.g. on GNU/Linux.

Unless --disable-shared is passed to configure, static
library built from a set of convenience libraries will
contain PIC objects. That is, while libtool builds non-PIC
objects too, only PIC objects will be used from the
convenience libraries. On 32-bit x86 (tested on mobile XP2400+),
using PIC instead of non-PIC makes the decompressor 10 % slower
with the default CFLAGS.

So while xz was linked against static liblzma by default,
it got the slower PIC objects unless --disable-shared was
used. I tend develop and benchmark with --disable-shared
due to faster build time, so I hadn't noticed the problem
in benchmarks earlier.

This commit also adds support for building Windows resources
into liblzma and executables.
2009-06-30 17:09:57 +03:00
Lasse Collin 7ff0004fbc Moved the Windows resource files outside the windows directory
to prepare for building them with Autotools.
2009-06-27 17:28:01 +03:00
Lasse Collin 792db79f27 Create correct symlinks even when
--program-{prefix,suffix,transform} is passed to configure.
2009-06-27 12:32:40 +03:00
Lasse Collin 1c9360b7d1 Fix @variables@ to $(variables) in Makefile.am files.
Fix the ordering of libgnu.a and LTLIBINTL on the linker
command line and added missing LTLIBINTL to tests/Makefile.am.
2009-06-26 14:47:31 +03:00
Lasse Collin 8ed156ce89 Added xzdec man page. 2009-06-04 23:42:12 +03:00
Lasse Collin f6df39afaa Harmonized xzdec --memory with xz --memory and made
minor cleanups.
2009-06-04 23:26:47 +03:00
Lasse Collin dcedb6998c Added support for --quiet and --no-warn to xzdec.
Cleaned up the --help message a little.
2009-05-22 16:40:50 +03:00
Lasse Collin 5f735dae80 Use the 40 % of RAM memory usage limit in xzdec too.
Update the memory usage info text in --help to match
the text in xz --long-help.
2009-05-22 15:11:52 +03:00
Lasse Collin 071b825b23 Support special value "max" where xz and xzdec accept an integer.
Don't round the memory usage limit in xzdec --help to avoid
an integer overflow and to not give wrong impression that
the limit is high enough when it may not actually be.
2009-05-21 17:22:01 +03:00
Lasse Collin 02ddf09bc3 Put the interesting parts of XZ Utils into the public domain.
Some minor documentation cleanups were made at the same time.
2009-04-13 11:27:40 +03:00
Lasse Collin fdbc0cfa71 Changed how the version number is specified in various places.
Now configure.ac will get the version number directly from
src/liblzma/api/lzma/version.h. The intent is to reduce the
number of places where the version number is duplicated. In
future, support for displaying Git commit ID may be added too.
2009-02-13 18:00:03 +02:00
Lasse Collin 96c46df7de Improve support for DOS-like systems.
Here DOS-like means DOS, Windows, and OS/2.
2009-02-13 17:29:02 +02:00
Lasse Collin 880c330938 Make it easy to choose if command line tools should be
linked statically or dynamically against liblzma. The
default is still to use static liblzma, but it can now
be changed by passing --enable-dynamic to configure.
Thanks to Mike Frysinger for the original patch.

Fixed a few minor bugs in configure.ac.
2009-02-07 21:17:07 +02:00
Lasse Collin 3e54ecee5c Fix missing newlines in xzdec.c. 2009-02-01 00:11:20 +02:00