1// SPDX-License-Identifier: GPL-2.0
 2#include <test_progs.h>
 3#include "test_stack_var_off.skel.h"
 4
 5/* Test read and writes to the stack performed with offsets that are not
 6 * statically known.
 7 */
 8void test_stack_var_off(void)
 9{
10	int duration = 0;
11	struct test_stack_var_off *skel;
12
13	skel = test_stack_var_off__open_and_load();
14	if (CHECK(!skel, "skel_open", "failed to open skeleton\n"))
15		return;
16
17	/* Give pid to bpf prog so it doesn't trigger for anyone else. */
18	skel->bss->test_pid = getpid();
19	/* Initialize the probe's input. */
20	skel->bss->input[0] = 2;
21	skel->bss->input[1] = 42;  /* This will be returned in probe_res. */
22
23	if (!ASSERT_OK(test_stack_var_off__attach(skel), "skel_attach"))
24		goto cleanup;
25
26	/* Trigger probe. */
27	usleep(1);
28
29	if (CHECK(skel->bss->probe_res != 42, "check_probe_res",
30		  "wrong probe res: %d\n", skel->bss->probe_res))
31		goto cleanup;
32
33cleanup:
34	test_stack_var_off__destroy(skel);
35}