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This is output of triehash.
Gbp-Dch: ignore
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Change the trust level check to allow downgrading an Untrusted
option to weak (APT::Hashes::SHA1::Weak "yes";), so it prints
a warning instead of an error; and change the default values
for SHA1 and RIPE-MD/160 from Weak to Untrusted.
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The documentation of APT::Periodic::Verbose doesn't match the code,
specifically level 2 should apply some things differently to level 1
but does not because it uses `-le 2` instead of `-lt 2` or `-le 1`.
Closes: 845599
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The test test-handle-redirect-as-used-mirror-change serves multiple
clients at the same time, so the order of the output is undefined and
once in a while the two clients will intermix their lines causing the
grep we perform on it later to fail making our tests fail.
Solved by introducing client-specific logfiles which we all grep and
sort the result to have the results more stable.
Git-Dch: Ignore
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In ad9416611ab83f7799f2dcb4bf7f3ef30e9fe6f8 we fall back to asking the
original mirror (e.g. a redirector) if we do not get the expected
result. This works for the indexes, but patches are a different beast
and much simpler. Adding this fallback code here seems like overkill as
they are usually right along their Index file, so actually forward the
relevant settings to the patch items which fixes pdiff support combined
with a redirector and partial mirrors as in such a situation the pdiff
patches would be 404 and the complete index would be downloaded.
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* the good old 'simple' keyring format
* the ascii armored variant since 1.4
Not supported is the (new in gpg 2.1) keybox format.
Closes: 844724
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Having binary files in /etc is kinda annoying – not that the armored
files are much better – but it is hard to keep tabs on which format the
file has ("simple" or "keybox") and different gnupg versions have
different default binary formats which can be confusing for users to
work with (beside that it is binary).
Adding support for this now will enable us in some distant future to
move to armored later on, much like we added trusted.gpg.d years before
the world picked it up.
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We report warnings from apt-key this way already since
29c590951f812d9e9c4f17706e34f2c3315fb1f6, so reporting errors seems like
a good addition. Most of those errors aren't really from apt-key
through, but from the code setting up and actually calling it which used
to just print to stderr which might or might not intermix them with
(other) progress lines in update calls. Having them as proper error
messages in the system means that the errors are actually collected
later on for the list instead of ending up with our relatively generic
but in those cases bogus hint regarding "is gpgv installed?".
The effective difference is minimal as the errors apply mostly to
systems which have far worse problems than a not as nice looking error
message, which makes this pretty hard to test – but at least now the
hint that your system is broken can be read in proper order (= there
aren't many valid cases in which the permissions of /tmp are messed up…).
LP: #1522988
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We try to configure all packages at the end which need to be configured,
but that also applies to packages which weren't completely installed
(e.g. maintainerscript failed) we end up removing in this interaction
instead.
APT doesn't perform this explicit configure in the end as it is using
"dpkg --configure --pending", but it does confuse the progress report
and potentially also hook scripts.
Regression-Of: 9ffbac99e52c91182ed8ff8678a994626b194e69
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dpkg stumbles over these (#844300) and we haven't dropped 'easier'
removes to be implicit and to be scheduled by dpkg by default so far
so we shouldn't push the decision in such cases to dpkg either.
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Our old idea was to look for the first package which would be "touched"
and take this as the package dpkg is talking about, but that is
incorrect in complicated situations like a package upgraded to/from
multiple M-A:same siblings installed.
As we us the progress report to decide what is still needed we have to
be reasonabily right about the package dpkg is talking about, so we jump
to quite a few loops to get it.
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Given that we use the progress information to skip over actions dpkg has
already done like not purging a package which was already removed and
had no config files or not acting on disappeared packages and such it is
important that apt and dpkg agree on which states the package has to
pass through.
To ensure that we keep tabs on this in the future a warning is added at
the end if apt hasn't seen all the action it was supposed to see. I
can't wait for the first bugreporters to wonder about this…
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If a package is triggered dpkg frequently issues two messages about it
causing us to make a note about it both times which messes up our
planned dpkg actions view. Adding these actions if we have nothing else
planned fixes this and should still be correct as those planned actions
will deal with the triggering just fine and we avoid strange problems
like a package triggered before its removed…
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Our profile says we spend about 5% of the time transforming the
hex digits into the binary format used by HashsumValue, all for
comparing them against the other strings. That makes no sense
at all.
According to callgrind, this reduces the overall instruction
count from 5,3 billion to 5 billion in my example, which
roughly matches the 5%.
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Generating a string for each version we see is somewhat inefficient.
The problem here is that the Description tag names are longer than
15 byte, and thus require an allocation on the heap, which we should
avoid.
It seems reasonable that 20 characters works for all languages codes
used for archive descriptions, but if not, there's a warning, so
we'll catch that.
This should improve performance by about 2%.
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This has the effect of significantly reducing actual string
comparisons, and should improve the performance of FindGrp
a bit, although it's hardly measureable (callgrind says it
uses 10% instructions less now).
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Stop copying stuff, and just parse the bytes one by-one to the
newly created AddCRC16Byte. This improves the instruction count
for an update run from 720,850,121 to 455,801,749 according to
callgrind.
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This one has some obvious collisions for non-alphabetical characters,
like some control characters also hashing to numbers, but we don't
really have those, and these are hash functions which are not
collision free to begin with.
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We already have two stable series with major version 10, and
the next commits will introduce non-backportable performance
changes that affect the cache algorithms, so we need to bump
the major version now to prevent future problems.
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This basically gets rid of 40-50% of the hash table lookups,
making things a bit faster that way, and the profiles look
far cleaner.
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Introduce a new enum class and add functions that can do a lookup
with that enum class. This uses triehash.
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git-subtree-dir: triehash
git-subtree-split: 16f59e1320e6db18ba3b4269b7ca333b1463dd7b
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This allows us to add a perfect hash function to the tag file
without having to reimplement the methods a second time.
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Move the use of the AlphaHash to a new second hash table in
preparation for the arrival of the new perfect hash function.
With the new perfect hash function hashing most of the keys for
us, having 128 slots for a fallback hash function seems enough
and prevents us from wasting space.
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