On Thu, Sep 25, 2025 at 01:43:06PM +0800, Yumei Huang wrote:
> Running `make assets` under `test` as root fails with a "Permission denied"
> error when `prepare-distro-img.sh` invokes `virt-edit` and `guestfish`. This
> is due to a known bug in libvirt.
> 
> Work around the issue by switching to the direct backend.
> 
> Signed-off-by: Yumei Huang <yuhuang@redhat.com>

Reviewed-by: David Gibson <david@gibson.dropbear.id.au>

The libvirt & libguestfs people don't particularly like this approach,
but I think it's reasonable for our needs.

> ---
>  test/prepare-distro-img.sh | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/test/prepare-distro-img.sh b/test/prepare-distro-img.sh
> index 0d967c9..423eea7 100755
> --- a/test/prepare-distro-img.sh
> +++ b/test/prepare-distro-img.sh
> @@ -3,6 +3,8 @@
>  IMG="$1"
>  PASST_FILES="$(echo ../*.c ../*.h ../*.sh ../*.1 ../Makefile ../README.md)"
>  
> +export LIBGUESTFS_BACKEND=direct
> +
>  virt-edit -a $IMG /lib/systemd/system/serial-getty@.service -e 's/ExecStart=.*/ExecStart=\/sbin\/agetty --autologin root -8 --keep-baud 115200,38400,9600 %I $TERM/g'
>  
>  guestfish --rw -a $IMG -i <<EOF
> -- 
> 2.47.0
> 

-- 
David Gibson (he or they)	| I'll have my music baroque, and my code
david AT gibson.dropbear.id.au	| minimalist, thank you, not the other way
				| around.
http://www.ozlabs.org/~dgibson