-TESTPOINT_BASE_PATH=$(readlink -f "$TMPDIR/lttng.t_p_n")
-TESTPOINT_PIPE_PATH=$(mktemp -u "${TESTPOINT_BASE_PATH}.XXXXXX")
+TESTPOINT_BASE_PATH=$(readlink -f "$TEST_TMPDIR/lttng.t_p_n")
+TESTPOINT_PIPE_PATH=$(mktemp -u --tmpdir="$TEST_TMPDIR" "lttng.t_p_n.XXXXXX")