Re: [DistroKit] [RFC] x86_64: run: add 9p tcp based rootfs support

[Robert Schwebel <r.schwebel@pengutronix.de>]

Applied to next

On Thu, Jun 22, 2023 at 12:46:10AM +0200, Michael Grzeschik wrote:
> Since there is no diod server ptxdist host tool available yet, this
> script starts the version from debian.
> 
> It is also to be found how to best start the server.
> For now this simple script works as proof of concept including
> ugly hacks to run and stop diod around the qemu exec.
> 
> Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
> ---
>  configs/platform-x86_64/run | 25 +++++++++++++++++++++++++
>  1 file changed, 25 insertions(+)
> 
> diff --git a/configs/platform-x86_64/run b/configs/platform-x86_64/run
> index 96322292..cd726021 100755
> --- a/configs/platform-x86_64/run
> +++ b/configs/platform-x86_64/run
> @@ -118,6 +118,31 @@ run_qemu_9p() {
>  		-append "root=/dev/root rw rootfstype=9p rootflags=trans=virtio ${BASE_CMDLINE}"
>  }
>  
> +# 9p net port
> +P9_ROOTFS_PORT=99999
> +
> +run_qemu_9pnet() {
> +	ROOTPATH=$(realpath ${PTXDIST_PLATFORMDIR}/root)
> +	# the emulator to run
> +	DIOD_EXEC="/sbin/diod"
> +
> +	if [ ! -e "${DIOD_EXEC}" ]; then
> +		echo "error: apt-get install 'diod' first"
> +		exit 1
> +	fi
> +
> +	${DIOD_EXEC} -f -n -S -l 127.0.0.1:${P9_ROOTFS_PORT} -e ${ROOTPATH} &
> +	# this is an ugly workaround so diod will be closed after qemu has stopped
> +	DIOD_PID=$(echo $!)
> +	(tail --pid $$ -f /dev/null; kill ${DIOD_PID}) &
> +
> +	exec ${QEMU_EXEC} \
> +		"${QEMU_ARGS[@]}" \
> +		"${QEMU_EXTRA_ARGS[@]}" \
> +		"${QEMU_LINUX_ARGS[@]}" \
> +		-append "ip=dhcp root=10.0.2.2 rw rootfstype=9p rootflags=trans=tcp,version=9p2000.L,aname=${ROOTPATH},port=${P9_ROOTFS_PORT} ${BASE_CMDLINE} ${EXTRA_CMDLINE}"
> +}
> +
>  target="${1:-9p}"
>  
>  #set -x
> -- 
> 2.39.2
> 
> 
> 

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