flatcar-scripts/build_library/sysext_mangle_flatcar-incus
Mathieu Tortuyaux fcb6e97776
incus: remove subuid / subgid creation from sysext
This create more issues than it solves:
* override existing subuid / subgid
* not flexible for the end user
* it has to be created only once (while tmpfiles always try to create
  those files)

I think Flatcar should not be responsible to create this and it should
be documented on how to do it through Ignition:
```yaml
version: 1.1.0
variant: flatcar
storage:
  files:
    - path: /etc/subuid
      append:
        - inline: |
            root:1065536:65536
    - path: /etc/subgid
      append:
        - inline: |
            root:1065536:65536
```

Signed-off-by: Mathieu Tortuyaux <mtortuyaux@microsoft.com>
2025-06-18 10:11:34 +02:00

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#!/bin/bash
set -euo pipefail
rootfs="${1}"
pushd "${rootfs}"
pushd ./usr/lib/systemd/system
mkdir -p "multi-user.target.d"
{ echo "[Unit]"; echo "Upholds=incus.service"; } > "multi-user.target.d/10-incus.conf"
popd
mkdir -p ./usr/lib/tmpfiles.d
pushd ./usr/lib/tmpfiles.d
cat <<EOF >./10-incus.conf
d /var/lib/lxc/rootfs 0755 root root - -
EOF
popd
# Add 'core' user to 'incus-admin' group to avoid prefixing
# all commands with sudo.
mkdir -p ./usr/lib/userdb/
echo " " > ./usr/lib/userdb/core:incus-admin.membership
popd