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Thanks to Jakub Wilk for the bugreport.
Closes: #754904
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CLoses: #752327
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This avoid the subtle problem that someone might have a directory
with the same package name as the build-depends he/she is trying
to fetch. Also print a note that the specific file/dir is used.
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Conflicts:
apt-pkg/deb/deblistparser.cc
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/pl.po
doc/po/pt.po
doc/po/pt_BR.po
po/da.po
po/mr.po
po/vi.po
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Having "/" here is most likely a user configuration error and
may cause removal of import symlinks like /vmlinuz
Closes: #753531
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A call to UniqFindTagWrite can trigger the need for a bigger mmap, which
is usually done by moving it, but with this move all pointers into it
become invalid (and have to be remapped). The compiler calculates the
pointer before the execution of the call though, so it tries to store
the returned value at the old location, resulting in a segfault.
We solve this by use of a temprorary variable as we did in the other
instances of this problem before.
Closes: #753941
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break
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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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A version belongs to a section and has hence a section member of its
own. A package on the other hand can have multiple versions from
different sections. This was "solved" by using the section which was
parsed first as order of sources.list defines, but that is obviously a
horribly unpredictable thing.
We therefore directly remove this struct member to free some space and
mark the access method as deprecated, which is told to return the
section of the 'newest' known version, which is at least predictable,
but possible not what it returned before – but nobody knows.
Users are way better of with the Section() as returned by the version
they are dealing with. It is likely the same for all versions of a
package, but in the few cases it isn't, it is important (like packages
moving from main/* to contrib/* or into oldlibs …).
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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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It also makes the size configureable, so it can be adapted in the future
without the need for an abi break - and even by users…
The increase was long overdue as it gives a >10% decrease in runtime of
e.g. 'apt-get check -s'. Some (useless) benchmark with 69933 groups and
187796 packages without a pre-built cache:
time apt-get check -so APT::Cache-HashTableSize=1 → 20m
time apt-get check -so APT::Cache-HashTableSize=1000 → 6,41s
time apt-get check -so APT::Cache-HashTableSize=2000 → 5,64s (old)
time apt-get check -so APT::Cache-HashTableSize=3000 → 5,30s
time apt-get check -so APT::Cache-HashTableSize=5000 → 5,08s
time apt-get check -so APT::Cache-HashTableSize=6000 → 5,05s
time apt-get check -so APT::Cache-HashTableSize=7000 → 5,02s
time apt-get check -so APT::Cache-HashTableSize=8000 → 5,00s
time apt-get check -so APT::Cache-HashTableSize=9000 → 4,98s
time apt-get check -so APT::Cache-HashTableSize=10000 → 4,96s (new)
time apt-get check -so APT::Cache-HashTableSize=15000 → 4,90s
time apt-get check -so APT::Cache-HashTableSize=20000 → 4,86s
time apt-get check -so APT::Cache-HashTableSize=30000 → 4,77s
time apt-get check -so APT::Cache-HashTableSize=40000 → 4,74s
time apt-get check -so APT::Cache-HashTableSize=50000 → 4,73s
time apt-get check -so APT::Cache-HashTableSize=60000 → 4,71s
The gap increases further for operations which have more package
lookups. Factor 5 was chosen as higher values do not provide any
really significant timing advantage anymore compared to the memory
increase in my testing and there is always the possibility to increase
it now if that changes. (also most users will not have 3 releases and
4 architectures in the cache, so theirs will be much smaller and faster).
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Conflicts:
apt-private/private-install.cc
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The name suggests that it is supposed to substitute a variable with a
value, but we tend to use it in a more liberal replace_all() fashion,
but this breaks if either of the parameters is empty or more importantly
if two "variable" occurrences follow each other directly.
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APT's cache can include packages from architectures dpkg has no
knowledge about and can therefore not be installed for e.g. to allow
easy lookups. There is no point in telling external solvers about them
though and some of them might even be really talkative about ignoring
them if we do.
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Conflicts:
apt-pkg/contrib/fileutl.cc
apt-pkg/contrib/fileutl.h
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debian/experimental
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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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This is a internal struct not a external interface so the actual
breakage should be small.
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Conflicts:
debian/changelog
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In commit 21b3eac8 I promoted the check for installable dependencies to
a pre-install check, which also reverts to a known good candidate (the
installed version) if it fails. This revert was done even for user
requested candidate switches which disabled our Broken detection so that
install requests which are impossible to satisfy do not fail anymore,
but print an (incomplete) solution proposal and then exit successfully.
Closes: 745046
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Adds also a small testcase for EDSP
Git-Dch: Ignore
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EDSP code uses pipes opened via an FD as sources and later for those
files modification times and filesize are read - but never really used
again. The result we get from FileFd is probably wrong, but as we don't
use it anyway, we just don't fallback if we have nothing to fallback to
Git-Dch: Ignore
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Solvers are supposed to exit successfully even if they haven't found a
solution, but a solver which fails drastically (like e.g. segfaults)
should be detected and dealt with accordingly instead of ignored.
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"I am going to merge it tomorrow…"
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Reported-By: clang++ -Werror
Conflicts:
apt-pkg/acquire-item.cc
apt-pkg/acquire-item.h
apt-pkg/deb/debmetaindex.h
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Conflicts:
test/integration/test-bug-747261-arch-specific-conflicts
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Reported-By: clang++ -Werror
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Reported-By: clang++ -Werror
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The Buffer was allocated using strndup() so we need to free it using
free() instead of delete[]
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Fix incorrect cast in pkgDepCache::Policy::GetCandidateVer()
Reported-By: clang -fsanitize=address -fno-omit-frame-pointer
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ContentsExtract::~ContentsExtract() needs to use free() because
Data got allocated via realloc()
Reported-By: clang -fsanitize=address -fno-omit-frame-pointer
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As outlined in #748355 apt segfaulted if it encountered a loop between a
package pre-depending on a package conflicting with the previous as it
ended up in an endless loop trying to unpack 'the other package'.
In this specific case as an essential package is involved a lot of force
needs to be applied, but can also be caused by 'normal' tight loops and
highlights a problem in how we handle breaks which we want to avoid.
The fix comes in multiple entangled changes:
1. All Smart* calls are guarded with loop detection. Some already had it,
some had parts of it, some did it incorrect, and some didn't even try.
2. temporary removes to avoid a loop (which is done if a loop is
detected) prevent the unpack of this looping package (we tried to unpack
it to avoid the conflict/breaks, but due to a loop we couldn't, so we
remove/deconfigure it instead which means we can't unpack it now)
3. handle conflicts and breaks very similar instead of duplicating most
of the code. The only remaining difference is, as it should:
deconfigure is enough for breaks, for conflicts we need the big hammer
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These failure conditions come with an error message attached and the
conditions aren't workaroundable (otherwise this would have been done
instead of returning failure), so not erroring out here means that we
execute dpkg later on with a known not-working ordering adding insult
(our own error messages at the end) to injury (dpkg failure).
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Git-Dch: Ignore
Reported-By: gcc
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The by-hash can be configured on a per-hostname basis and a Release
file can indicate that it has by-hash support via a new flag.
The location of the hash now matches the AptByHash spec
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This implements a apt update schema that get the indexfiles by the
hash instead of the name. The rational is that updates to the archive
servers/mirrors are not atomic so the client may have the previous
version of the Release file when the server updates to a new
Release file and new Packages/Sources/Translations indexes. By
keeping the files around by their hash we can still get the previous
indexfile without a hashsum mismatch.
Enable with APT::Acquire::By-Hash=1
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