The tool initially just measured the boot phase, but was subsequently
extended to measure file system and machine IDs, too. At AllSystemsGo
there were request to add more, and make the tool generically
accessible.
Hence, let's rename the binary (but not the pcrphase services), to make
clear the tool is not just measureing the boot phase, but a lot of other
things too.
The tool is located in /usr/lib/ and still relatively new, hence let's
just rename the binary and be done with it, while keeping the unit names
stable.
While we are at it, also move the tool out of src/boot/ and into its own
src/pcrextend/ dir, since it's not really doing boot related stuff
anymore.
This ports over unit_main_pid() + unit_control_pid() to return PidRef*
pointers (which also means the underlying UnitVTable function pointers
are changed accordingly).
This then uses te functions to simplify the unit_kill() call, by
avoiding the kill() vtable indirection and instead just suing
unit_main_pid() and unit_control_pid() directly.
The TODO says we were supposed to do that in 2019–2020 (if I interpreted the
enigmatic notation correctly). The comment in hwdb said:
> DO NOT USE THIS PROPERTY. This property is kept for backwards
> compatibility. The only known consumer, libinput, stopped reading this
> property in version 1.9.0. No new entries for this property should be
> added.
… and we're currently on libinput-1.23.0.
Most likely there are no users, and even if they are, they'll just get a
slightly misbehaving pointingstick, which shouldn't be too bad.
The article "a" goes before consonant sounds and "an" goes before vowel
sounds. This commit changes an to a for UKI, UDP, UTF-8, URL, UUID, U-Label, UI
and USB, since they start with the sound /ˌjuː/.
Before this commit, we only accept the case when LoaderDevicePartUUID
points to the ESP, while XBOOTLDR is mounted unconditionally.
After this commit, we check if LoaderDevicePartUUID points to either
ESP or XBOOTLDR. If it does, mount both, else nothing gets mounted.
