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Fixes a warning reported by gcc.
Gbp-Dch: ignore
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The implementation changed in
495b7a615a2d8f485beadf88c6ed298f5bbe50c2
Git-Dch: Ignore
Reported-By: Julian Andres Klode <jak@debian.org>
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This reverts commit 7ac9386cb6e272625490fcf3e8183b45e28bbc43.
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This reverts commit 28f24d3dad1844af316337d565ba2ebc11c8ce97.
This fails on Ubuntu as they build with -Bsymbolic-functions.
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Dropping privileges is an involved process for code and system alike so
ideally we want to verify that all the work wasn't in vain. Stuff
designed to sidestep the usual privilege checks like fakeroot (and its
many alternatives) have their problem with this through, partly through
missing wrapping (#806521), partly as e.g. regaining root from an
unprivileged user is in their design. This commit therefore disables
most of these checks by default so that apt runs fine again in a
fakeroot environment.
Closes: 806475
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This also deals with the unlikely case of groups being mentioned
multiple times or if the effective group isn't mentioned at all.
In practice, it is a debugging aid through like for #806475.
Git-Dch: Ignore
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Git-Dch: Ignore
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Closes: #806422
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Reference mail:
https://lists.debian.org/debian-l10n-english/2015/11/msg00006.html
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Out of memory and similar circumstanzas could cause MMap::Map to fail
and especially the mmap/malloc calls in it. With some additional
checking we can avoid segfaults and similar in such situations – at
least in theory as if this is a real out of memory everything we do to
handle the error could just as well run into a memory problem as well…
But at least in theory (if MMap::Map is made to fail always) we can deal
with it so good that a user actually never sees a failure (as the cache
it tries to load with it fails and is discarded, so that DynamicMMap
takes over and a new one is build) instead of segfaulting.
Closes: 803417
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space-gapping: '-o option= value'
That is a very old feature (straight from 1998), but it is super
surprising if you try setting empty values and instead get error
messages or a non-empty value as the next parameter is treated as the
value – which could have been empty, so if for some reason you need a
compatible way of setting an empty value try: '-o option="" ""'.
I can only guess that the idea was to support '-o option value', but we
survived 17 years without it, we will do fine in the future I guess.
Similar is the case for '-t= testing' even through '-t testing' existed
before and the code even tried to detect mistakes like '-t= -b' … all
gone now.
Technically that is as its removing a feature replacing it with another
a major interface break. In practice I really hope for my and their
sanity that nobody was using this; but if for some reaon you do: Remove
the space and be done.
I found the patch and the bugreport actually only after the fact, but
its reassuring that others are puzzled by this as well and hence a
thanks is in perfect order here as the patch is practical identical
[expect that this one here adds tests and other bonus items].
Thanks: Daniel Hartwig for initial patch.
Closes: 693092
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In 0940230d we started dropping privileges for file (and a bit later for
copy, too) with the intend of uniforming this for all methods. The
commit message says that the source will likely fail based on the
compressors already – and there isn't much secret in the repository
content. After all, after apt has run the update everyone can access the
content via apt anyway…
There are sources through which worked before which are mostly
single-deb (and those with the uncompressed files available).
The first one being especially surprising for users maybe, so instead of
failing, we make it so that apt detects that it can't access a source as
_apt and if so doesn't drop (for all sources!) privileges – but we limit
this to file/copy, so the uncompress which might be needed will still
fail – but that failed before this regression.
We display a notice about this, mostly so that if it still fails (e.g.
compressed) the user has some idea what is wrong.
Closes: 805069
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Limit the field length to a char to avoid bogus FF for
utf-8 characters with the default length.
Closes: 799123
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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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The wrapping will fail in the best case and actually end up deleting
/dev/null in the worst case. Given that there is no point in trying to
write atomically to /dev/null as you can't read from it again just
ignore these flags if higher level code ends up trying to use them on
/dev/null.
Git-Dch: Ignore
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Its not as simple as I initially thought to abstract this enough to make
it globally usable, so lets not pollute global namespace with this for
now.
Git-Dch: Ignore
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-q is for logging and -qqq (old -qq) basically kills every output expect
errors, so there should be a way of declaring a middleground in which
the output of e.g. 'update' isn't as verbose, but still shows some
things. The test framework was actually making use of by accident as it
ignored the quiet level in output setup for apt before.
Eventually we should figure out some better quiet levels for all tools…
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All mains pretty much do the same thing, so lets try a little harder to
move the common parts into -private to have the real differences more
visible.
Git-Dch: Ignore
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That is one huge commit with busy work only: Help messages used to be
one big translateable string, which is a pain for translators and hard
to reuse for us. This change there 'explodes' this single string into
new string for each documented string trying hard to split up the
translated messages as well. This actually restores many translations as
previously adding a single command made all of the bug message fuzzy.
The splitup also highlighted that its easy to forget a line, duplicate
one and similar stuff.
Git-Dch: Ignore
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Especially with apt now, it can be useful to set an option only for apt
and not for apt-get. Using a binary-specific subtree which is merged into
the root seems like a simple enough trick to achieve this.
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This makes non-C++11 reverse deps wishing to use it FTBFS.
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Gbp-Dch: ignore
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The previous implementation was still a bit unstable in terms of failing
at times. Lets try if we have more luck with this one.
Git-Dch: Ignore
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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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clang detects that fd isn't set in the ReadWrite case – just that this
is supposed to be catched earlier in this method already, but it doesn't
hurt to make it explicit here as well and clang is happy, too.
Git-Dch: Ignore
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Pipes and such have no good Size value, but we still want to copy from
it maybe and we don't really need size as we can just as well read as
long as we get data out of a file to copy it.
Git-Dch: Ignore
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Git-Dch: Ignore
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Initializing a random number generator with the time since epoch could
be good enough, but reaches its limits in test code as the 100
iterations might very well happen in the same second and hence the seed
number is always the same… clock() has a way lower resolution so it
changes more often and not unimportant: If many users start the update
at the same time it isn't to unlikely the SRV record will be ordered in
the same second choosing the same for them all, but it seems less likely
that the exact same clock() time has passed for them.
And if I have to touch this, lets change a few other things as well to
make me and/or compilers a bit happier (clang complained about the usage
of a GNU extension in the testcase for example).
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We want to declare some hashes as not enough for security, so that a
user will need --allow-unauthenticated or similar to get data secured
only by those hashes, but we can still us these hashes for integrity
checks if we got them.
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The md5sum hash is broken since some time and we should no longer
consider it a usable hash. Also update the tests to reflect this.
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Various smaller improvements so that the check deals better with already
downloaded files, relative paths and other things.
Git-Dch: Ignore
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Using libpam-tmpdir caused us to create our download tmp directory in
root's private tmp before changing to _apt, which wouldn't have access
to it.
By extending our GetTempDir method with an optional wrapper changing the
effective user, we can test if a given user can access the directory and
ignore TMPDIR if not instead of ignoring TMPDIR completely.
Closes: 797270
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We dup() the file descriptor when opening compressed files, so we
always need to close the dup()ed one. Furthermore, not unsetting
the d-pointer causes issues when running OpenDescriptor() multiple
times on the same file descriptor.
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Also add "Debug::Acquire::SrvRecs" debug option and the option
"Acquire::EnableSrvRecods" to allow disabling this lookup.
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feature/srv-records
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Conflicts:
cmdline/apt-helper.cc
cmdline/makefile
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Gbp-Dch: ignore
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Closes: #762758
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More standardization
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Switch to std::unique_ptr, as this is safer than SPtr.
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Gbp-Dch: ignore
Reported-By: g++ -Wsuggest-override
Thanks: g++ -Wsuggest-override
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This significantly reduces the number of files that have to be closed
and seems to be faster, despite the additional reads.
On systems where /proc/self/fd is not available, we fallback to the
old code that closes all file descriptors >= 3.
Closes: #764204
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We changed an aweful lot of stuff, so 5.0 is properly better than 4.X as
a semantic version and as we are at it lets add some trivial symbol
versioning as well: We just mark all exported symbols with the same
version for now. This isn't really the proper thing to do as if we add
symbols in later versions (with the same abi) they will get the same
symbols version, but our .symbols file will protect us from the problems
arising from this as it will ensure that a package acutally depends on a
version of the abi high enough to include the symbol.
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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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We aren't and we will not be really compatible again with the previous
stable abi, so lets drop these markers (which never made it into a
released version) for good as they have outlived their intend already.
Git-Dch: Ignore
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C++11 adds the 'override' specifier to mark that a method is overriding
a base class method and error out if not. We hide it in the APT_OVERRIDE
macro to ensure that we keep compiling in pre-c++11 standards.
Reported-By: clang-modernize -add-override -override-macros
Git-Dch: Ignore
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By further abstracting the iterator templates we can wrap the reverse
iterators of the wrapped containers and share code in a way that
iterator creating is now more template intensive, but shorter in code.
Git-Dch: Ignore
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