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Re: [PATCH] CI: workaround broken selinux+docker interaction in yocto
- To: Marek Marczykowski-Górecki <marmarek@xxxxxxxxxxxxxxxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx
- From: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
- Date: Mon, 22 Jul 2024 18:16:51 +0100
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- Cc: Doug Goldstein <cardoe@xxxxxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>
- Delivery-date: Mon, 22 Jul 2024 17:17:04 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 20/07/2024 1:15 am, Marek Marczykowski-Górecki wrote:
> `cp --preserve=xattr` doesn't work in docker when SELinux is enabled. It
> tries to set the "security.selinux" xattr, but SELinux (or overlay fs?)
> denies it.
> Workaround it by skipping selinux.selinux xattr copying.
>
> Signed-off-by: Marek Marczykowski-Górecki <marmarek@xxxxxxxxxxxxxxxxxxxxxx>
> ---
> Tested here:
> https://gitlab.com/xen-project/people/marmarek/xen/-/jobs/7386198058
>
> But since yocto container fails to build, it isn't exactly easy to apply
> this patch...
> "kirkstone" branch of meta-virtualization seems to target Xen 4.15 and
> 4.16, so it isn't exactly surprising it fails to build with 4.19.
Why is the external version of Xen relevant to rebuilding the container ?
Or is it that kirkstone has updated since the container was last built?
I'm not familiar with yocto, and a quick glance at the docs haven't
helped...
~Andrew
>
> I tried also bumping yocto version to scarthgap (which supposedly should
> have updated pygrub patch), but that fails to build for me too, with a
> different error:
>
> ERROR: Layer 'filesystems-layer' depends on layer 'networking-layer', but
> this layer is not enabled in your configuration
> ERROR: Parse failure with the specified layer added, exiting.
> ...
> ERROR: Nothing PROVIDES 'xen-image-minimal'. Close matches:
> core-image-minimal
> core-image-minimal-dev
> Parsing of 2472 .bb files complete (0 cached, 2472 parsed). 4309 targets,
> 101 skipped, 0 masked, 0 errors.
> ---
> automation/build/yocto/yocto.dockerfile.in | 4 ++++
> 1 file changed, 4 insertions(+)
>
> diff --git a/automation/build/yocto/yocto.dockerfile.in
> b/automation/build/yocto/yocto.dockerfile.in
> index fbaa4e191caa..600db7bf4d19 100644
> --- a/automation/build/yocto/yocto.dockerfile.in
> +++ b/automation/build/yocto/yocto.dockerfile.in
> @@ -68,6 +68,10 @@ RUN locale-gen en_US.UTF-8 && update-locale
> LC_ALL=en_US.UTF-8 \
> ENV LANG en_US.UTF-8
> ENV LC_ALL en_US.UTF-8
>
> +# Workaround `cp --preserve=xattr` not working in docker when SELinux is
> +# enabled
> +RUN echo "security.selinux skip" >> /etc/xattr.conf
> +
> # Create a user for the build (we don't want to build as root).
> ENV USER_NAME docker-build
> ARG host_uid=1000
|
