Re: [Qemu-devel] [PATCH RFC v4 3/4] docker: Support "QEMU_CHROOT" in dockerfiles

["Alex Bennée" <alex.bennee@linaro.org>]

Fam Zheng <famz@redhat.com> writes:

> This allows a docker file to say "ENV QEMU_CHROOT /path/to/new/root" to
> indicate that the test execution should be done in a chroot in the
> container.
>
> Bind mount dev,sys,proc into QEMU_CHROOT to make them avaiable for
> testing scripts.
>
> The SYS_ADMIN is a required capability for mount, add it to the
> docker run command line.
>
> Signed-off-by: Fam Zheng <famz@redhat.com>
> ---
>  tests/docker/Makefile.include |  1 +
>  tests/docker/run              | 12 ++++++++++++
>  2 files changed, 13 insertions(+)
>
> diff --git a/tests/docker/Makefile.include b/tests/docker/Makefile.include
> index c5546ee..e9821ba 100644
> --- a/tests/docker/Makefile.include
> +++ b/tests/docker/Makefile.include
> @@ -107,6 +107,7 @@ docker-run-%: docker-qemu-src
>  		$(call quiet-command,\
>  			$(SRC_PATH)/tests/docker/docker.py run $(if $V,,--rm) \
>  				-t \
> +				--cap-add SYS_ADMIN \
>  				$(if $(DEBUG),-i,--net=none) \
>  				-e TARGET_LIST=$(TARGET_LIST) \
>  				-e EXTRA_CONFIGURE_OPTS=$(EXTRA_CONFIGURE_OPTS) \
> diff --git a/tests/docker/run b/tests/docker/run
> index 38ce789..4e80cc3 100755
> --- a/tests/docker/run
> +++ b/tests/docker/run
> @@ -19,6 +19,18 @@ fi
>
>  BASE="$(dirname $(realpath $0))"
>
> +# cp files into the chroot and execute there
> +if test -n "$QEMU_CHROOT"; then
> +    mkdir -p $QEMU_CHROOT/$BASE
> +    cp $BASE/* $QEMU_CHROOT/$BASE
> +    QEMU_CHROOT_SAVE="$QEMU_CHROOT"
> +    for bp in dev sys proc; do
> +        mount --bind /$bp $QEMU_CHROOT/$bp
> +    done
> +    QEMU_CHROOT="" chroot $QEMU_CHROOT_SAVE $BASE/run "$@"
> +    exit 0
> +fi
> +

Running:

make docker-test TEST="test-quick" IMAGES="debootstrap-arm" V=1 J=9

Hmm another failure:

Image is up to date.
/home/alex/lsrc/qemu/qemu.git/tests/docker/docker.py run  -t --cap-add SYS_ADMIN --net=none -e TARGET_LIST= -e EXTRA_CONFIGURE_OPTS= -e V=1 -e J=9 -e DEBUG= -e CCACHE_DIR=/var/tmp/ccache -v $(realpath docker-src.2016-07-11-13.16.09.23334):/var/tmp/qemu:z,ro -v $HOME/.cache/qemu-docker-ccache:/var/tmp/ccache:z qemu:debootstrap-arm /var/tmp/qemu/run test-clang;
+++ realpath /var/tmp/qemu/run
++ dirname /var/tmp/qemu/run
+ BASE=/var/tmp/qemu
+ test -n /debootstrap-arm
+ mkdir -p /debootstrap-arm//var/tmp/qemu
+ cp /var/tmp/qemu/dtc.tgz /var/tmp/qemu/pixman.tgz /var/tmp/qemu/qemu.tgz /var/tmp/qemu/run /debootstrap-arm//var/tmp/qemu
+ QEMU_CHROOT_SAVE=/debootstrap-arm
+ for bp in dev sys proc
+ mount --bind /dev /debootstrap-arm/dev
mount: mount /dev on /debootstrap-arm/dev failed: Permission denied
/home/alex/lsrc/qemu/qemu.git/tests/docker/Makefile.include:102: recipe for target 'docker-run-test-clang@debootstrap-arm' failed
make: *** [docker-run-test-clang@debootstrap-arm] Error 32
You have new mail in /var/mail/alex

>  # Prepare the environment
>  . /etc/profile || true
>  export PATH=/usr/lib/ccache:$PATH


--
Alex Bennée