2021-07-13 10:31:02 +00:00
|
|
|
---
|
|
|
|
|
title: "How to use Alpine Linux commit hooks"
|
|
|
|
|
date: 2021-04-18T13:56:06+02:00
|
|
|
|
|
draft: false
|
|
|
|
|
---
|
|
|
|
|
|
2021-07-22 18:13:06 +00:00
|
|
|
tl;dr:
|
2021-07-13 10:31:02 +00:00
|
|
|
|
2021-07-22 18:13:06 +00:00
|
|
|
- Create directory `/etc/apk/commit_hooks.d`
|
2021-07-13 10:31:02 +00:00
|
|
|
- Put your executable files in there
|
|
|
|
|
- First argument passed to your script is the stage (`pre-commit`/`post-commit`)
|
|
|
|
|
|
2021-07-22 18:13:06 +00:00
|
|
|
### Example hook
|
|
|
|
|
|
2022-08-27 08:16:52 +00:00
|
|
|
```shell
|
|
|
|
|
#!/bin/sh
|
2021-07-13 10:31:02 +00:00
|
|
|
|
|
|
|
|
if ! mount | grep -q '/boot/efi'; then
|
|
|
|
|
mount /boot/efi
|
|
|
|
|
fi
|
|
|
|
|
|
|
|
|
|
if [[ "$1" == "post-commit" ]]; then
|
2021-07-22 18:13:06 +00:00
|
|
|
cp /boot/initramfs-lts /boot/efi/alpine/initramfs-lts
|
|
|
|
|
cp /boot/vmlinuz-lts /boot/efi/alpine/vmlinuz-lts
|
2021-07-13 10:31:02 +00:00
|
|
|
fi
|
|
|
|
|
```
|
2021-07-22 18:13:06 +00:00
|
|
|
|
|
|
|
|
### Why?
|
|
|
|
|
|
|
|
|
|
I use [Gummiboot](https://en.wikipedia.org/wiki/Gummiboot_(software)) as my bootloader,
|
|
|
|
|
which can boot Linux kernel images directly from the EFI partition.
|
|
|
|
|
Alpine packages don't care about EFI though, they just put the stuff in `/boot`
|
|
|
|
|
[directly](https://pkgs.alpinelinux.org/contents?file=&path=%2Fboot&name=linux-lts&branch=edge&repo=main&arch=x86_64).
|
|
|
|
|
(I mean, the official wiki just says "manually copy them to `/boot/efi/`", which works but I tend to forget about it)
|
|
|
|
|
|
|
|
|
|
I didn't want to mount EFI as `/boot`, so I decided that creating a commit hook would be
|
|
|
|
|
the easiest way of hotfixing that issue (not ideal, as it runs with _every_ apk commit,
|
|
|
|
|
but feasible for my use).
|
