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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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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
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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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Version/Architecture information in a Translation-$lang file is
not allowed, so don't try to parse it. This is a fix for a bugreport
where a Translation-en file contained the content of the regular
Packages file (probably due to local FS corruption). This lead to
strange error messages on file download.
Thanks to Thomas Reusch for the report.
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debian/sid
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Closes: 746434
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gcc reports in testcase ./test-bug-596498-trusted-unsigned-repo:
apt-pkg/acquire-item.cc:1059:7: runtime error: load of value 234, which
is not a valid value for type 'bool'
This happens as the bool Verify is initialized only in one of the two
constructors of the pkgAcqIndex class. It isn't a problem through as the
verification controlled by this flag is optional and used to fail early
on garbage files (like network portal pages) instead of later on in the
hashsum verification or while parsing (the then untrusted) file.
Reported-By: gcc-4.9 -fsanitize=undefined
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gzip only gives us 32bit of size, storing it in a 64bit container and
doing a 32bit flip on it has therefore unintended results.
So we just go with a exact size container and let the flipping be handled
by eglibc provided le32toh removing our #ifdef machinery.
Closes: 745866
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The bugreport highlights the problem with an empty package name. We fix
this by 'ignoring' these so that it behaves just like "apt-get install".
The deeper problem is that modifier strings can be longer than a package
name in which case the comparison doesn't make sense, so don't compare
then. Was not noticed so far as all modifiers are of length 1, so the
only package name shorter than this is in fact the empty package name.
Closes: 744940
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In bug #740673 various issues in the CD-ROM handling code were
identified, while most the issues ended up being fixed in another way,
the unmounting of the CD-ROM in error cases was not tackled so far.
(The patch was modified by the commiter to apply)
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fseek and co do this to their eof-flags and it is more logic this way as
we will usually seek away from the end (e.g. to re-read the file).
The commit also improves the testcase further and adds a test for the
binary compressor codepath (as gz, bzip2 and xz are handled by
libraries) via the use of 'rev' as a 'compressor'.
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We always reacted on the size change, but the bar is only redraw if the
precentage changes, which can take quiet a while in big upgrades, so
with a bit of refactoring we can now call for a redraw immediate to fix
this.
This refactor also helps in avoiding obscure pitfalls clangs static
analyser was complaining about (namely failure of ioctl resulting in
garbage values in the struct).
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A package which can't be downloaded anymore is very likely dropped from
a release and can therefore no longer be 'standard' (or similar). We
therefore do not grant points for them anymore and demote them to
prio:extra instead which helps other packages breaking them away even if
they have a lower priority.
The testcase was initially created by Michael Vogt and just amended.
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As the comment actually says: open() does the umask dance by itself, so
we don't need to do it for it. We have to do it after mkstemp in Atomic
though, so move it into the if.
Also removes the "micro-optimisation" "FilePermissions == 600" as it
doesn't trigger at the moment anyway as 600 != 0600.
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FileFd::Read already deals with the increase of the skipposition so that
we as the caller in FileFd::Skip really shouldn't increase it, too.
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FileFd code knows how to deal with such a compressor, so it isn't a
problem, but it is absolutely not needed as we already have an
(matching) identity compressor with '.' earlier in the list.
Git-Dch: Ignore
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The explicit listing is a pain every time you want to add a file to the
list and serves no propose as we list all files there anyway, so this is
not only easier but also documents this fact.
Git-Dch: Ignore
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Bug lp:#1304657 was caused by confusion around the name Perms.
The new name AccessMode should make it clear that its not the
literal file permissions but instead the AccessMode passed to
open() (i.e. the umask needs to be applied)
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Commit 7335eebea6dd43581d4650a8818b06383ab89901 introduced a bug
that caused FileFd to create insecure permissions when FileFd::Atomic
is used. This commit fixes the permissions and adds a test.
The bug is most likely caused by the confusing "Perm" parameter
that is passed to Open() - its not the file permissions but intead
the "mode" part of open/creat.
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If a external command closes the PIPE unexpectedly, do not crash
in pkgDPkgPM::RunScriptsWithPkgs but ignore the SIGPIPE.
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This debug option will display all scripts that are run
by apts RunScripts and RunScriptsWithPkgs helpers.
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A text progressbar is now displayed in the Dpkg::Progress-Fancy
mode. It can be turned off via the apt option
Dpkg::Progress-Fancy::Progress-Bar=false
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Add two new options: Dpkg::Progress-Fancy::Progress-{fg,bg} that
allows customizing the colors in the dpkg fancy progress output.
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In commit 446551c8 I changed MarkInstall to discard the candidate if the
candidate can't satisfy the dependency. This breaks interactive solvers
like aptitude which can change the candidate on-the-fly later.
In commit df77d8a5 I introduced this 'early' loop-breaking to begin with
which can't be that helpful for interactive solvers as well, but makes
perfect sense for non-interactives to stop them from exploring trees
which can't be satisfied, but it isn't perfect as ideally we would check
this before auto-installing the first dependency.
This commit therefore moves the loop into its own IsInstallOk hook so
that frontends can override this check if they want to and in exchange
removes the loop-breaking from MarkInstall itself and does it before any
dependency is installed.
Closes: 740750
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