PR_CAP_AMBIENT_CLEAR_ALL 1250 security/commoncap.c if (arg2 == PR_CAP_AMBIENT_CLEAR_ALL) { PR_CAP_AMBIENT_CLEAR_ALL 325 tools/testing/selftests/capabilities/test_execve.c if (prctl(PR_CAP_AMBIENT, PR_CAP_AMBIENT_CLEAR_ALL, 0, 0, 0, 0) != 0)