This bug was fixed in the package apt - 2.0.6
---------------
apt (2.0.6) focal; urgency=medium
* RunScripts: Do not reset SIGQUIT and SIGINT to SIG_DFL (LP: #1898026)
* test suite fix: Check for and discard expected warning from MaybeAddAuth
* Fix downloads of unsized files that are largest in pipeline (LP: #1921626),
and warn about packages without size (option Acquire::AllowUnsizedPackages)
* JSON hooks 0.2 and assorted JSON bugfixes (LP: #1926150)
- encoder fixes:
+ json: Escape strings using \u escape sequences, add test
+ json: Actually pop states
+ json: Encode NULL strings as null
- json: Flush standard file descriptors before calling hooks
(this avoids output from hooks in middle of apt output)
- non-code changes:
+ test/json: Make the test hook more reliable
+ Fix a typo in json-hooks-protocol.md (thanks to Brian Murray)
- semantic changes (new fields, hooks, and protocol 0.2):
+ json: Add origins fields to version
+ upgrade: Add JSON hook support (AptCli::Hooks::Upgrade)
+ json: Add `package-list` and `statistics` install hooks
+ json: Hook protocol 0.2 (added upgrade,downgrade,reinstall modes)
+ Fix a typo in json-hooks-protocol.md (thanks to Brian Murray)
* Avoid infinite loop on EOF on media change prompt (LP: #1928687)
-- Julian Andres Klode <juli...@ubuntu.com> Tue, 15 Jun 2021 13:05:46
+0200
** Changed in: apt (Ubuntu Focal)
Status: Fix Committed => Fix Released
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https://bugs.launchpad.net/bugs/1898026
Title:
interruption of dist-upgrade can leave you next release in
sources.list
Status in apt package in Ubuntu:
Fix Released
Status in ubuntu-release-upgrader package in Ubuntu:
Fix Released
Status in apt source package in Bionic:
Fix Committed
Status in ubuntu-release-upgrader source package in Bionic:
New
Status in apt source package in Focal:
Fix Released
Status in ubuntu-release-upgrader source package in Focal:
Fix Released
Status in apt source package in Groovy:
Fix Released
Status in ubuntu-release-upgrader source package in Groovy:
Fix Released
Status in apt source package in Hirsute:
Fix Released
Status in ubuntu-release-upgrader source package in Hirsute:
Fix Released
Bug description:
[Impact]
Calling update() or installing packages from apt clients resets their SIGINT
and SIGQUIT handlers to SIG_DFL, overriding any signal handlers they might have
set for them.
In case of ubuntu-release-upgrader, this results in the release
upgrader being unable to handle interrupts after it did the initial
update - the default libc handler will run and the program exits.
[Test plan]
[[apt]]
As a standalone test for apt, we can test the following script:
import apt
import time
apt.Cache().update()
print("WAITING")
try:
time.sleep(10000)
except BaseException as e:
print("Seen", repr(e))
print("END")
Pressing Ctrl+C while WAITING is printed should print Seen
KeyboardInterrupt, and importantly, also the END line.
[[ubuntu-release-upgrader]]
1) On an Ubuntu 18.04 system run do-release-upgrade in a terminal.
2) At the "Do you want to start the upgrade?" question say Y.
3) When you see the "Lock screen disabled" message you will also see
"Inhibiting until Ctrl+C is pressed".
4) Press "Ctrl+C"
Your /etc/apt/sources.list file will now have focal in it instead of
bionic although the upgrade has quit. With the version of ubuntu-
release-upgrader in -proposed you will not see the "Ctrl+C" message.
For your sources.list file to be restored you'll need the version of
apt from bionic-proposed installed before starting the upgrade.
[Where problems could occur]
apt: This specific change removes the two lines that SIG_DFL the signal
handlers after running scripts. AFAWCT those lines are unnecessary - the code
that calls it temporarily sets the handlers to SIG_IGN but restores previous
handlers at the end; it was wrongly refactored decades ago. A regression could
occur in that those signals will now continue to be ignored if we missed a spot.
ubuntu-release-upgrader: The change is wrapping a bunch of code in a
try: except: block so if the indentation was off the pyflakes /
pycodestyle tests would fail but autopkgtest will catch that.
[Original bug report]
As a long-time-user of ?ubuntu, with apt-get as tool of choice for
updates/upgrades I wrote a daily script for updates, with 'dist-upgrade'.
In all earlier years, it wouldn't actually do an upgrade of a ?ubuntu
version; just all packages including new ones. Version updates had to be
initiated manually, and I was always asked if I really wanted the new ?ubuntu
version. Sounds appropriate.
Last night when it (dist-upgrade), it just gave me 20.04. No questions asked.
I for one consider this kind of intrusive, though.
It *might* have to make with me trying 'sudo do-release-upgrade -m desktop' a
number of times earlier; just to *check* if the upgrade was on offer; but this
is only a guess.
In *any* case, a pop-up asking "Are you sure? Are you connected
through an adequate pipe? Are you sitting with full batteries; better
a power supply?" would be convenient; since I am using my PC for
urgent duties, and didn't want to fiddle with unexpected upgrade bugs.
ProblemType: BugDistroRelease: Ubuntu 20.04
Package: ubuntu-release-upgrader-core 1:20.04.25
ProcVersionSignature: Ubuntu 5.4.0-48.52-generic 5.4.60
Uname: Linux 5.4.0-48-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.9
Architecture: amd64
CasperMD5CheckResult: skip
CrashDB: ubuntu
CurrentDesktop: KDE
Date: Thu Oct 1 11:48:39 2020
InstallationDate: Installed on 2019-03-14 (566 days ago)
InstallationMedia: Kubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64
(20180725)
PackageArchitecture: allSourcePackage: ubuntu-release-upgrader
Symptom: ubuntu-release-upgrader
UpgradeStatus: Upgraded to focal on 2020-09-29 (1 days ago)
VarLogDistupgradeAptlog:
Log time: 2020-09-29 19:44:28.696289
Log time: 2020-09-29 19:44:33.573481
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