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Having dependency data separated from the link between version/package
and the dependency allows use to work on sharing the depdency data a bit
as it turns out that many dependencies are in fact duplicates. How many
are duplicates various heavily with the sources configured, but for a
single Debian release the ballpark is 2 duplicates for each dependency
already (e.g. libc6 counts 18410 dependencies, but only 45 unique). Add
more releases and the duplicates count only rises to get ~6 for 3
releases. For each architecture a user has configured which given the
shear number of dependencies amounts to MBs of duplication.
We can cut down on this number, but pay a heavy price for it: In my
many releases(3) + architectures(3) test we have a 10% (~ 0.5 sec)
increase in cache creationtime, but also 10% less cachesize (~ 10 MB).
Further work is needed to rip the whole benefits from this through, so
this is just the start.
Git-Dch: Ignore
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Various small leaks here and there. Nothing particularily big, but still
good to fix. Found by the sanitizers while running our testcases.
Reported-By: gcc -fsanitize
Git-Dch: Ignore
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Translation-* files are internally handled as PackageFiles which isn't
super nice, but giving them their own struct is a bit overkill so let it
be for the moment. They always appeared in the policy output because of
this through and now that they are properly linked to a ReleaseFile they
even display all the pinning information on them, but they don't contain
any packages which could be pinned… No problem, but useless and
potentially confusing output.
Adding a 'NoPackages' flag which can be set on those files and be used
in applications seems like a simple way to fix this display issue.
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We used to read the Release file for each Packages file and store the
data in the PackageFile struct even through potentially many Packages
(and Translation-*) files could use the same data. The point of the
exercise isn't the duplicated data through. Having the Release files as
first-class citizens in the Cache allows us to properly track their
state as well as allows us to use the information also for files which
aren't in the cache, but where we know to which Release file they
belong (Sources are an example for this).
This modifies the pkgCache structs, especially the PackagesFile struct
which depending on how libapt users access the data in these structs can
mean huge breakage or no visible change. As a single data point:
aptitude seems to be fine with this. Even if there is breakage it is
trivial to fix in a backportable way while avoiding breakage for
everyone would be a huge pain for us.
Note that not all PackageFile structs have a corresponding ReleaseFile.
In particular the dpkg/status file as well as *.deb files have not. As
these have only a Archive property need, the Component property takes
over this duty and the ReleaseFile remains zero. This is also the reason
why it isn't needed nor particularily recommended to change from
PackagesFile to ReleaseFile blindly. Sticking with the earlier is
usually the better option.
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While it is mostly busywork to rewrite all instances it actually fixes
bugs as the data storage used by the new method is std::string rather
than a char*, the later mostly created by c_str() from a std::string
which the caller has to ensure keeps in scope – something apt-ftparchive
actually didn't ensure and relied on copy-on-write behavior instead
which c++11 forbids and hence the new default gcc abi doesn't use it.
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As part of the “reproducible builds” effort [1], we have noticed that
apt could not be built reproducibly.
One issue is that it uses the __DATE__ and __TIME__ macros of the C
preprocessor to display the time of build in the online help. We believe
this information not to be really useful to users as they can always
look at the package data and metadata to figure it out.
The attached patch simply removes this information. All
non-documentation packages can then be built reproducibly with our
current experimental framework.
[David: changed the string slightly to be untranslateable as well]
Closes: 774342
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Usually they don't provide a lot in terms of what they test, but they
help in covering many lines from strictly anecdotal commands (stats,
moo) and error messages, so that stuff which really needs to be tested,
but isn't is better visible in coverage reports.
Git-Dch: Ignore
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Git-Dch: Ignore
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By convention, if I run a tool with --help or --version I expect it to
exit successfully with the usage, while if I do call it wrong (like
without any parameters) I expect the usage message shown with a non-zero
exit.
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The change itself is no problem ABI wise, but the remove of the old
undynamic hashtables is, so we bring it back for older abis and happily
use the now available free space to backport more recent additions like
the dynamic hashtable itself.
Git-Dch: Ignore
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Git-Dch: Ignore
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Accessing the package records to acquire this information is pretty
costly, so that information wasn't used so far in many places. The most
noticeable user by far is EDSP at the moment, but there are ideas to
change that which this commit tries to enable.
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Git-Dch: Ignore
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The introduction of Fnmatch showed that each new selector would require
multiple new virtual methods in the CacheSetHelper to work correctly,
which isn't that great. We now flip to a single virtual method which
handles all cases separated by an enum – as new enum values can be added
without an ABI break.
Great care was taken to make old code work with the new way of organisation,
which means in return that you might be bombarded with deprecation
warnings now if you don't adapt, but code should still compile and work
as before as can be seen in apt itself with this commit.
Git-Dch: Ignore
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So far, only the few strings stored in stringitems were counted, but
many more strings are directly inserted into the cache. We account for
this now by identifying all these different strings and measure their
length. We are still not at the correct size of the cache in 'stats'
this way, but we are now again a bit closer.
Git-Dch: Ignore
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Conflicts:
apt-pkg/acquire-item.cc
configure.ac
debian/changelog
doc/apt-verbatim.ent
doc/po/apt-doc.pot
doc/po/de.po
doc/po/es.po
doc/po/fr.po
doc/po/it.po
doc/po/ja.po
doc/po/pt.po
po/ar.po
po/ast.po
po/bg.po
po/bs.po
po/ca.po
po/cs.po
po/cy.po
po/da.po
po/de.po
po/dz.po
po/el.po
po/es.po
po/eu.po
po/fi.po
po/fr.po
po/gl.po
po/hu.po
po/it.po
po/ja.po
po/km.po
po/ko.po
po/ku.po
po/lt.po
po/mr.po
po/nb.po
po/ne.po
po/nl.po
po/nn.po
po/pl.po
po/pt.po
po/pt_BR.po
po/ro.po
po/ru.po
po/sk.po
po/sl.po
po/sv.po
po/th.po
po/tl.po
po/tr.po
po/uk.po
po/vi.po
po/zh_CN.po
po/zh_TW.po
test/integration/test-ubuntu-bug-346386-apt-get-update-paywall
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When apt-cache search with many args (> 130) is given the allocation
of PatternMatch on the stack may fail resulting in a segmentation
fault. By using the heap the max size is much bigger and we also
get a bad_alloc expection instead of a segfault (which we can catch
*if* this ever becomes a pratical problem). No test for the crash
as its not reproducable with the MALLOC_ settings in framework.
Closes: 759612
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It still doesn't reflect the size the cache has on the disk compared to
what is given as total size (90 vs 103 MB), but by counting all structs
in we are at least a bit closer to the reality.
Git-Dch: ignore
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We had a wild mixture of (unsigned) int, long and long long here without
much sense, so this commit adds a few typedefs to get some sense in the
typesystem and ensures that a ID isn't sometimes computed as int, stored
as long and compared with a long long… as this could potentially bite us
later on as the size of the archive only increases over time.
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Conflicts:
apt-pkg/acquire-item.cc
apt-pkg/acquire-item.h
apt-pkg/deb/debmetaindex.h
apt-pkg/pkgcache.cc
test/integration/test-apt-ftparchive-src-cachedb
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Closes: 742835
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Git-Dch: Ignore
Reported-By: gcc -Wsuggest-attribute={pure,const,noreturn}
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Beside being a bit cleaner it hopefully also resolves oddball problems
I have with high levels of parallel jobs.
Git-Dch: Ignore
Reported-By: iwyu (include-what-you-use)
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Reported-By: gcc -Wunused-parameter
Git-Dch: Ignore
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Git-Dch: Ignore
Reported-By: gcc -Wmissing-declarations
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Reported-By: gcc
Git-Dch: Ignore
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experimental
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Using the static FileFd::Write method gives us error messages for free
so we use it here to avoid failing silently (with a fail silent error).
Git-Dch: Ignore
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Beside the earlier fixed 'apt-cache show', 'showpkg' and 'search' deal
with descriptions. 'showpkg' was fixed by fixing the cache generation
for 'show', but 'search' still segfaulted.
On the upside, it doesn't segfault any longer, on the downside, if a
package has no description at all (aka: not in the Packages file and not
in a Translation-* file) the package can't be found with 'search', even
if we search only by name. That is a shortcoming in the code, but fixing
it means rewriting it completely for dubious gain at best.
So this commit just skips packages without a description and is done.
Closes: 647590
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Given a Packages file like:
[…]
Description: foo bar baz
moo moo moo
Multi-Arch: foreign
Description-md5: 97e204a9f4ad8c681dbd54ec7c505251
[…]
We have to display the Multi-Arch flag field as well as the fields
after the Description-md5, but not this field itself, as we already
have one printed alongside the Description we display.
Closes: 717254
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do not blindly assume that all packages stanzas have a "Description:"
field in 'apt-cache show' as well as in the cache creation itself.
We instead assume now that if the stanza has a Description, it will not
be the first field as we look out for "\nDescription" to take care of
MD5sum as well as (maybe ignored) translated Descriptions embedded in
the package stanza.
Closes: #712435
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Patterns can appear in the name as well as in the description,
they don't have to match all in the name/description only.
Closes: 691453
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Git-Dch: Ignore
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- print versioned dependency relations in (r)depends if the option
APT::Cache::ShowVersion is true (default: false) as discussed in
#218995 to help debian-cd fixing #687949. Thanks to Sam Lidder
for initial patch and Steve McIntyre for nagging and testing!
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to the more standard PACKAGE_VERSION and make it work in every file
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- correct --pre-depends option by using dash consistently (LP: #940837)
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to search for compressed silbings of the given filename and use this guessing
instead of hardcoding Gzip compression
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* cmdline/apt-{get,cache,mark}.cc:
- use Lists instead of Sets if input order should be preserved for
commands accepting lists of packages, e.g. policy (Closes: #625960)
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- make the cachesets real containers which can embedding any container
to be able to use the same interface regardless of set or list usage
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done on the mirco-optimazation level, so lets fix them:
(performance) Possible inefficient checking for emptiness.
(performance) Prefer prefix ++/-- operators for non-primitive types.
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for the three different dependencies
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- deprecate mostly undocumented 'markauto' in favor of 'apt-mark'
* cmdline/apt-cache.cc:
- deprecate mostly undocumented 'showauto' in favor of 'apt-mark'
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Niels Thykier, thanks! (Closes: #622805)
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