task.yaml

summary: Ensure that snapd works on systems with a non rshared root
# no need to run on ubuntu-core-16, we always have / shared here
systems: [-ubuntu-core-*]
prepare: |
    . $TESTSLIB/dirs.sh
    # simulate a system with a non-shared /
    mount --make-private /
    mount --make-private $(readlink -f $SNAP_MOUNT_DIR/core/current)
restore: |
    . $TESTSLIB/dirs.sh
    mount --make-rshared /
    mount --make-rshared $(readlink -f $SNAP_MOUNT_DIR/core/current)
execute: |
    . $TESTSLIB/dirs.sh

    echo "Install fresh test-snapd-tools"
    snap install test-snapd-tools
    test-snapd-tools.echo hello

    echo "Refresh, subsequent runs after refresh will fail if / is not rshared"
    snap refresh --edge test-snapd-tools
    test-snapd-tools.echo hello

    echo "Ensure we have a shared mount of $SNAP_MOUNT_DIR"
    cat /proc/self/mountinfo |MATCH "$SNAP_MOUNT_DIR $SNAP_MOUNT_DIR.*shared:[0-9]"

    echo "Run it again for good measure"
    test-snapd-tools.echo hello
    echo "... and ensure we do not mount $SNAP_MOUNT_DIR again"
    n=$(cat /proc/self/mountinfo |grep "$SNAP_MOUNT_DIR $SNAP_MOUNT_DIR.*shared:[0-9]"|wc -l)
    if [ "$n" -ne 1 ]; then
        echo "Incorrect extra $SNAP_MOUNT_DIR bind mounts created"
        exit 1
    fi