Bug#1014581: systemd-boot: kernel hook schould use conforming name

[Michael Biebl]

Am 12.07.22 um 18:16 schrieb Michael Biebl:
> Control: tags -1 + moreinfo
> 
> Am 08.07.22 um 11:14 schrieb Norbert Lange:
>> Package: systemd-boot
>> Version: 251.2-7
>> Severity: normal
>> X-Debbugs-Cc: nolange79 at gmail.com
>>
>> Dear Maintainer,
>>
>> The kernel hook in /etc/kernel/{post,pre}inst.d should
>> be named correctly, to quote the kernel-handbook [1]:
>>
>>>    hook scripts for boot loaders must be named using
>>      the prefix zz- and no other packages may use this prefix
>>
>> so zz-systemd-boot whould be correct.
> 
> This looks super ugly :-/
> At the very least they should have picked numerical prefixes...
> 
> That said, why does the kernel hook need to run late/last? I.e., does 
> this actually cause any real issues? If so, can you elaborate.
> 

I looked into this a bit more and it is still not obvious/clear to me, 
why the kernel hook for systemd needs to use the zz prefix (i.e. run 
late/last). The systemd kernel hook copies the vmlinux-* binary to 
/boot/efi, but this file is available once the linux-image-* package has 
been unpacked.

That said, I could understand if the initramfs hook needs to run last, 
i.e. /etc/initramfs/post-update.d/systemd-boot. As this hook will copy 
the initrd to /boot/efi and initramfs hooks *do* modify the initrd image.
The kernel handbook doesn't mention anything in that regard though, so 
it seems to be incomplete/wrong for the purposes of systemd-boot?


I'm reluctant to blindly change anything without understanding why.
So would welcome further input from someone who is familiar with that topic.

Regards,
Michael


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