touch "$WORK_DIR/overlay/foo"
test -e "$WORK_DIR/upper/foo"
systemd-umount "$WORK_DIR/overlay"
+
+# Validate that we cannot mount through a symlink or ..
+mkdir "$WORK_DIR"/flurb
+ln -s flurb "$WORK_DIR"/knarb
+systemd-mount --canonicalize=no --tmpfs "$WORK_DIR"/flurb/shlum
+systemd-umount "$WORK_DIR/"/flurb/shlum
+(! systemd-mount --canonicalize=no --tmpfs "$WORK_DIR"/knarb/shlum)
+systemd-mount --canonicalize=yes --tmpfs "$WORK_DIR"/knarb/shlum
+systemd-umount "$WORK_DIR/"/flurb/shlum
+(! systemd-mount --canonicalize=no --tmpfs "$WORK_DIR"/flurb/../flurb/shlum)
+systemd-mount --canonicalize=yes --tmpfs "$WORK_DIR"/flurb/../flurb/shlum
+systemd-umount "$WORK_DIR/"/flurb/shlum
+
+# Validate that we can correctly create dir and reg files inodes if needed
+systemd-mount --tmpfs "$WORK_DIR"/flurb/shlum/some/more/dirs
+systemd-umount "$WORK_DIR/"/flurb/shlum/some/more/dirs
+systemd-mount /bin/ls "$WORK_DIR"/flurb/shlum/some/more/dirs/file -o bind
+systemd-umount "$WORK_DIR/"/flurb/shlum/some/more/dirs/file