** Changed in: ucf (Ubuntu Jammy)
Status: In Progress => Won't Fix
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https://bugs.launchpad.net/bugs/2061825
Title:
[SRU] ucf fails to work for local diversions on Jammy
Status in ucf package in Ubuntu:
Fix Released
Status in ucf source package in Jammy:
Won't Fix
Bug description:
[ Impact ]
When a dpkg-diversion is used to setup a package diversion and ucf for
managing
the configuration files for chrony package, the postinst script of ucf fails
when installing chrony.
This issue isn't specific to chrony but can happen for any package whose
config files are managed by ucf.
This affects users on Jammy who use ucf. Newer versions of ucf have this bug
fixed already.
"ucf should respect dpkg-divert" (refer https://bugs.debian.org/cgi-
bin/bugreport.cgi?bug=477773) indicates it is a feature and has been
supported since 3.0040 and has been accepted by the upstream
maintainer.
[ Test Plan ]
Common case.
A1. Create a Jammy container or VM
A2. Install chrony: apt install chrony -y
A3. Confirm ucf works with no failures (including syntax errors)
B1. Modify the configuration: /etc/chrony/chrony.conf
B2. Remove chrony package and re-install
B3. Confirm it still works.
B. Case when a diversion is in place.
1. Create a Jammy container or VM
2. Setup a diversion for chrony.conf: dpkg-divert --package chrony --add
--rename --divert /etc/chrony/chrony.conf.custom /etc/chrony/chrony.conf
3. Install chrony: apt install chrony -y
4. Notice the postinst script fail with syntax errors such as:
```
Preparing to unpack .../chrony_4.2-2ubuntu2_amd64.deb ...
Unpacking chrony (4.2-2ubuntu2) ...
Setting up chrony (4.2-2ubuntu2) ...
/usr/bin/ucf: 444: [: missing ]
grep: ]: No such file or directory
/usr/bin/ucf: 444: [: missing ]
grep: ]: No such file or directory
```
5. Install the package with the fix from the PPA:
https://launchpad.net/~pponnuvel/+archive/ubuntu/ucf-jammy (to be replaced with
the package from the -proposed pocket)
6. Repeat the same from steps 1 to 4 and notice no failures at step4.
[ Where problems could occur ]
Can further introduce similar bugs if the patch contains similar syntax
errors. Consequently local diversion may not take effect for packages
using ucf to manage configuration files.
[ Other Info ]
Upstream bug: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=979354
It's been fixed in version ucf/3.0043+nmu1. Lunar/Mantic/Noble all have the
ucf version with this patch.
Affects Jammy only and thus backported to only Jammy.
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/ucf/+bug/2061825/+subscriptions
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