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This new field allows a repository to declare that access to
packages requires authorization. The current implementation will
set the pin to -32768 if no authorization has been provided in
the auth.conf(.d) files.
This implementation is suboptimal in two aspects:
(1) A repository should behave more like NotSource repositories
(2) We only have the host name for the repository, we cannot use
paths yet.
- We can fix those after an ABI break.
The code also adds a check to acquire-item.cc to not use the
specified repository as a download source, mimicking NotSource.
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This allows disabling a repository by pinning it to 'never',
which is internally translated to a value of -32768 (or whatever
the minimum of short is).
This overrides any other pin for that repository. It can be used
to make sure certain sources are never used; for example, in
unattended-upgrades.
To prevent semantic changes to existing files, we substitute
min + 1 for every pin-priority: <min>. This is a temporary
solution, as we are waiting for an ABI break.
To add pins with that value, the special Pin-Priority
"never" may be used for now. It's unclear if that will
persist, or if the interface will change eventually.
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Prompted-by: Jakub Wilk <jwilk@debian.org>
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We used to fail on unreadable config/preferences/sources files, but at
least for sources we didn't in the past and it seems harsh to refuse to
work because of a single file, especially as the error messages are
inconsistent and end up being silly (like suggesting to run apt update
to fix the problem…).
LP: #1701852
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Using different ways of opening files means we have different behaviour
and error messages for them, so by the same for all we can have more
uniformity for users and apt developers alike.
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This makes it easier to see which headers includes what.
The changes were done by running
git grep -l '#\s*include' \
| grep -E '.(cc|h)$' \
| xargs sed -i -E 's/(^\s*)#(\s*)include/\1#\2 include/'
To modify all include lines by adding a space, and then running
./git-clang-format.sh.
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Including cacheiterators.h before pkgcache.h fails because
pkgcache.h depends on cacheiterators.h.
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Changes nothing on the program front and as the datatypes are
sufficently comparable fixes no bug either, but problems later on if we
ever change the types of those and prevent us using types which are too
large for the values we want to store waste (a tiny bit of) resources.
Gbp-Dch: Ignore
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An absolute filename for a *.deb file starts with a /. A package with
the name of the file is inserted in the cache which is provided by the
"real" package for internal reasons. The pinning code detects a regex
based wildcard by having the regex start with /. That is no problem
as a / can not be included in a package name… expect that our virtual
filename package can and does.
We fix this two ways actually: First, a regex is only being considered a
regex if it also ends with / (we don't support flags). That stops our
problem with the virtual filename packages already, but to be sure we
also do not enter the loop if matcher and package name are equal.
It has to be noted that the creation of pins for virtual packages like
the here effected filename packages is pointless as only versions can be
pinned, but checking that a package is really purely virtual is too
costly compared to just creating an unused pin.
Closes: 835818
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Usually these config options are set to sensible values, but if init
isn't run or the user interferes with configuration clearing or similar
the options could indeed carry an empty value, which will result in
FindDir returning a '/'. That feels kinda wrong, but as a public
interface there isn't much we can do about it and instead make it so
that we get the special file /dev/null back we know how to deal with in
such cases.
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The report mentions "apt list --upgradable", but there are others which
have inconsistent behavior ranging from segfaulting to doing something
with the partial (and hence incomplete) data. We had a recent report
about sources.list (#818628), this one mentions prefences, the obvious
next step is conf files… so the testcase is adapted to check for all
three in file and directory versions and run a bunch of commands each
time which should all have more or less the same behavior in such a case
(aka error out).
Closes: 824503
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Gbp-Dch: ignore
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Bye bye old friend. You're in one Ubuntu LTS release for compat
testing, now we do not need you anymore.
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Broken in the previous commit (69cea1ef2cfda3c4da79fd756a8edaf2be26998e).
Adding a test and a comment to avoid future embarrassment.
Git-Dch: Ignore
Reported-By: Julian Andres Klode on IRC
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It would previously return a pin of 0, which is an invalid value, but
the intend is that versions which are only in the dpkg/status file can't
be selected for installation (= can't be a candidate) which is what a
negative pin assures.
This helps with the communication to EDSP solvers as they neither know
about the rc-state (yet) nor that they shouldn't choose this version.
Ideally they shouldn't be told about such versions at all as there is
nothing to be solved here, but we will get there eventually.
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apt_preferences and deb822-style sources used the specialized class
pkgUserTagSection to deal with comments before/after a given stanza, but
it couldn't deal with comments in the stanza at all.
codesearch suggests that nobody else does and a vastely superior way of
working with potentially commented files is implemented now, so we can
officially discourage the use of the old incomplete hack class.
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Reported-By: cppcheck
Git-Dch: Ignore
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We had this code lying around in apt-mark for a while now, but other
frontends need this (and similar) functionality as well, so its high
time that we provide a public interface in libapt for this stuff.
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Our error reporting is historically grown into some kind of mess.
A while ago I implemented stacking for the global error which is used in
this commit now to wrap calls to functions which do not report (all)
errors via return, so that only failures in those calls cause a failure
to propergate down the chain rather than failing if anything
(potentially totally unrelated) has failed at some point in the past.
This way we can avoid stopping the entire acquire process just because a
single source produced an error for example. It also means that after
the acquire process the cache is generated – even if the acquire
process had failures – as we still have the old good data around we can and
should generate a cache for (again).
There are probably more instances of this hiding, but all these looked
like the easiest to work with and fix with reasonable (aka net-positive)
effects.
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The parser creates a preferences as well as an extended states file
based on the EDSP scenario file, which isn't the most efficient way of
dealing with this as thes text files have to be parsed again by another
layer of the code, but it needs the least changes and works good enough
for now. The 'apt' solver is in the end just a test solver like dump.
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Gbp-Dch: ignore
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Git-Dch: ignore
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Also unify the case of considerFiles and ConsiderFiles to be
ConsiderFiles in all cases.
Gbp-Dch: ignore
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More standardization
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Treat invalid pin priorities and overflows as an error.
Closes: #429912
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This allows us to exclude files from being considered for the
priority, so it will return only specific-version matches.
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This was broken in case all other sources were < 0.
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This should fix travis compilation errors.
Gbp-Dch: ignore
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This makes test-bug-254770-segfault-if-cache-not-buildable happy.
Git-Dch: Ignore
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Having two different formats in the same file is very dirty and causes
external tools to fail hard trying to parse them. It is probably not a
good idea for them to parse them in the first place, but they do and we
shouldn't break them if there is a better way.
So we solve this issue for now by giving our deb822 format a new
filename extension ".sources" which unsupporting applications are likely
to ignore an can begin gradually moving forward rather than waiting for
the unknown applications to catch up.
Currently and for the forseeable future apt is going to support both
with the same feature set as documented in the manpage, with the
longtime plan of adopting the 'new' format as default, but that is a
long way to go and might get going more from having an easier time
setting options than from us pushing it explicitely.
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Doing this disables the implicit copy assignment operator (among others)
which would cause hovac if used on the classes as it would just copy the
pointer, not the data the d-pointer points to. For most of the classes
we don't need a copy assignment operator anyway and in many classes it
was broken before as many contain a pointer of some sort.
Only for our Cacheset Container interfaces we define an explicit copy
assignment operator which could later be implemented to copy the data
from one d-pointer to the other if we need it.
Git-Dch: Ignore
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Gbp-Dch: ignore
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This was broken previously, as we'd choose a downgrade when it's
pin was higher than the previously selected candidate.
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The new implementation assigns each version a pin, instead of assigning
the pin to a package. This enables us to give each version of a package
a different priority.
Closes: #770017
Closes: #622237
Closes: #620249
Closes: #685215
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This makes sure that we display a useful value instead of 0 for
versions that are pinned due to package files.
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Per-version pins should lead to more predictable results with
/etc/apt/preferences uses like pinning one version with -1.
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To have a chance to keep the ABI for a while we need all three to team
up. One of them missing and we might loose, so ensuring that they are
available is a very tedious but needed task once in a while.
Git-Dch: Ignore
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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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If the pin for a generic pin is 0, it get a value by strange looking
rules, if the pin is specific the rules are at least not strange, but
the value 989 is a magic number without any direct meaning… but both
never happens in practice as the parsing skips such entries with a
warning, so there always is a priority != 0 and the code therefore never
used.
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The documentation says this, but the code only agreed while evaluating
specific packages, but not generics. These needed a pin above 1000 to
have the same effect.
The code causing this makes references to a 'second pesduo status file',
but nowhere is explained what this might stand for and/or what it was,
so we do the only reasonable thing: Remove all references and do as
documented.
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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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We start your quest by using the version of a package applying to a
specific pin, but that version could very well be below the current
version, which causes APT to suggest a downgrade even if it is
advertised that it never does this below 1000.
Its of course questionable what use a specific pin on a package has
which has a newer version already installed, but reacting with the
suggestion of a downgrade is really not appropriated (even if its kinda
likely that this is actually the intend the user has – it could just as
well be an outdated pin) and as pinning is complicated enough we should
atleast do what is described in the manpage.
So we look out for the specific pin and if we haven't seen it at the
moment we see the installed version, we ignore the specific pin.
Closes: 543966
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- match pins with(out) an architecture as we do on the commandline
(partly fixing #687255, b= support has to wait for jessie)
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