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EDSP(-like) protocols are one-shot processes working on data which
exists only as long as they run (as they get feed via a pipe), so trying
to write a cache for it is pretty pointless, especially as it will
usually fail as the cache files tend to be owned by root, but the
process is run as a unpriviledged user (either _apt if called by root,
otherwise the user of the caller).
So this was in fact only observeable with our testcases which run as
non-root and the worst which happens is that a valid cache is overridden
with an invalid one which the next run will detect and not use.
Git-Dch: Ignore
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The classes are all marked as hidden, so changing them is no problem ABI
wise and will help with introducing protocols similar to EDSP.
The change has no observeable behavior difference, its just code
juggling.
Git-Dch: Ignore
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Include <stdlib.h> to ensure that mkdtemp(3) is defined to improve
general portability and fix a specific build failure on Android.
Closes: #807367
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Unlinking /dev/null is bad, we shouldn't do that. Also, we should print
at least a warning if we tried to unlink a file but didn't manage to
pull it of (ignoring the case were the file is /dev/null or doesn't
exist in the first place).
This got triggered by a relatively unlikely to cause problem in
pkgAcquire::Worker::PrepareFiles which would while temporary
uncompressed files (which are set to keep compressed) figure out that to
files are the same and prepare for sharing by deleting them. Bad move.
That also shows why not printing a warning is a bad idea as this hide
the error for in non-root test runs.
Git-Dch: Ignore
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Git-Dch: Ignore
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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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Trade deduplication of code for a bunch of new virtuals, so it is
actually visible how the different indexes behave cleaning up the
interface at large in the process.
Git-Dch: Ignore
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Sources are usually defined in sources.list (and co) and are pretty
stable, but once in a while a frontend might want to add an additional
"source" like a local .deb file to install this package (No support for
'real' sources being added this way as this is a multistep process).
We had a hack in place to allow apt-get and apt to pull this of for a
short while now, but other frontends are either left in the cold by this
and/or the code for it looks dirty with FIXMEs plastering it and has on
top of this also some problems (like including these 'volatile' sources
in the srcpkgcache.bin file).
So the biggest part in this commit is actually the rewrite of the cache
generation as it is now potentially a three step process. The biggest
problem with adding support now through is that this makes a bunch of
previously mostly unusable by externs and therefore hidden classes
public, so a bit of further tuneing on this now public API is in order…
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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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We have a bunch of classes which are of no use for the outside world,
but were still exported and so needed to preserve ABI/API. Marking them
as hidden to not export them any longer is a big API break in theory,
but in practice nobody is using them – as if they would its a bug.
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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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- check with RealFileExists for scenario file as otherwise a directory
like one provided with RootDir triggers the usage of EDSP
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based on a very early draft for EDSP by Stefano
APT can now write a scenario as well as load most stuff from it.
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