Re: [PATCH v2] expand-on-first-boot: Add /tmp to ConditionPathIsReadWrite

[Uladzimir Bely <ubely@ilbers.de>]

On Fri, 2024-07-12 at 17:39 +0200, 'Clara Kowalsky' via isar-users
wrote:
> Since mktemp is used and creates a temporary file, we need to ensure
> that /tmp is writable.
> 
> Signed-off-by: Clara Kowalsky <clara.kowalsky@siemens.com>
> ---
>  .../expand-on-first-boot/files/expand-on-first-boot.service     | 2
> +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/meta/recipes-support/expand-on-first-boot/files/expand-
> on-first-boot.service b/meta/recipes-support/expand-on-first-
> boot/files/expand-on-first-boot.service
> index 90c92a39..9daae719 100644
> --- a/meta/recipes-support/expand-on-first-boot/files/expand-on-
> first-boot.service
> +++ b/meta/recipes-support/expand-on-first-boot/files/expand-on-
> first-boot.service
> @@ -9,7 +9,7 @@ DefaultDependencies=no
>  Conflicts=shutdown.target
>  After=systemd-remount-fs.service
>  Before=local-fs-pre.target shutdown.target
> -ConditionPathIsReadWrite=/etc
> +ConditionPathIsReadWrite=/etc /tmp
>  

In a downstream we have read-only rootfs and some writable last
partition that we want to expand. Having writable "/etc" condition in
Isar recipe makes us use .bbappend rewrite the service file.

Would not it be better not to depend on writable "/etc" at all in Isar?

>  [Service]
>  Type=oneshot
> -- 
> 2.45.2
> 

BTW, in the same downstream something close we do for sshd-regen-keys
service. Due to readonly rootfs, instead of writable "/etc" condition
we use more narrow "/etc/ssh" one. So it might be changed in Isar also,
but it is a topic for a separate discussion.

-- 
Best regards,
Uladzimir.

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