[Ex-MIR] libraspberrypi-bin libraspberrypi0

[Dave Jones]

[Availability]
The package is already in universe.

[Rationale]
The package is depended upon by the new raspi-common seed, for inclusion in all pi related images. The reason for its inclusion in the seed is that the libraspberrypi-bin package provides the vcgencmd and dtoverlay utilities which are both required by rpi-eeprom (the subject of a separate MIR, LP: #1895137) for updating the boot EEPROM on the Raspberry Pi 4.

The libraspberrypi0 package is a dependency of libraspberrypi-bin and both are built from the raspberrypi-userland source package.

[Security]
I am not aware of any open CVEs against the tools in libraspberrypi-bin or the libraries in libraspberrypi0.

It may be worth noting that the -bin package installs a udev rule (in /lib/udev/10-local-rpi.rules) permitting members of the "video" group access to /dev/vchiq, which is required for all the VC related utilities (including vcgencmd, raspivid, and raspistill) to be operated without root privileges.

[Quality assurance]
The package is extensively used upstream on Raspbian, and is obviously actively maintained there. There is no meaningful test suite included in the package, but the contents of the package are regularly exercised in image testing (and boot EEPROM testing).

[UI standards]
I've added manual pages for all the utilities I'm able to, but localization is missing from all utilities at present. However, most users will never use these utilities directly (bar, perhaps, the raspivid and raspistill utilities for the camera module). Instead the most common scenario is that the utilities will be used (invisibly) by other scripts (e.g. rpi-eeprom-update) for maintenance purposes like manipulating the boot EEPROM.

[Dependencies]
As noted above, libraspberrypi-bin depends on libraspberrypi0. It also depends on device-tree-compiler and libc6, both of which are already in main. libraspberrypi0 in turn merely depends on libc6.

[Standards compliance]
The package installs its binaries under /usr/bin, and its libraries under /usr/lib. Upstream does not version their API, so the libraries are unversioned.

[Maintenance]
The package is maintained by the Ubuntu Foundations team.

[Background information]
As noted above, the package is a dependency of the recently added raspi-common seed (https://lists.ubuntu.com/archives/ubuntu-release/2020-September/005086.html). As it is a dependency for keeping the boot EEPROM on the Raspberry Pi 4 up to date, the intention is to install this by default in all pi-related images going forward.

[Christian Ehrhardt  (paelzer)]

Merged into 1895137 and marked as Dup.
Keep the review of one use-case context in one place.