1// SPDX-License-Identifier: GPL-2.0
2// Copyright (c) 2020 Facebook
3#define _GNU_SOURCE
4#include <test_progs.h>
5#include "test_core_retro.skel.h"
6
7void test_core_retro(void)
8{
9	int err, zero = 0, res, my_pid = getpid();
10	struct test_core_retro *skel;
11
12	/* load program */
13	skel = test_core_retro__open_and_load();
14	if (!ASSERT_OK_PTR(skel, "skel_load"))
15		goto out_close;
16
17	err = bpf_map__update_elem(skel->maps.exp_tgid_map, &zero, sizeof(zero),
18				   &my_pid, sizeof(my_pid), 0);
19	if (!ASSERT_OK(err, "map_update"))
20		goto out_close;
21
22	/* attach probe */
23	err = test_core_retro__attach(skel);
24	if (!ASSERT_OK(err, "attach_kprobe"))
25		goto out_close;
26
27	/* trigger */
28	usleep(1);
29
30	err = bpf_map__lookup_elem(skel->maps.results, &zero, sizeof(zero), &res, sizeof(res), 0);
31	if (!ASSERT_OK(err, "map_lookup"))
32		goto out_close;
33
34	ASSERT_EQ(res, my_pid, "pid_check");
35
36out_close:
37	test_core_retro__destroy(skel);
38}
39