1// SPDX-License-Identifier: GPL-2.0
 2/* Copyright (c) 2021 Facebook */
 3
 4#include <test_progs.h>
 5#include <sys/syscall.h>
 6#include "linked_funcs.skel.h"
 7
 8void test_linked_funcs(void)
 9{
10	int err;
11	struct linked_funcs *skel;
12
13	skel = linked_funcs__open();
14	if (!ASSERT_OK_PTR(skel, "skel_open"))
15		return;
16
17	skel->rodata->my_tid = syscall(SYS_gettid);
18	skel->bss->syscall_id = SYS_getpgid;
19
20	err = linked_funcs__load(skel);
21	if (!ASSERT_OK(err, "skel_load"))
22		goto cleanup;
23
24	err = linked_funcs__attach(skel);
25	if (!ASSERT_OK(err, "skel_attach"))
26		goto cleanup;
27
28	/* trigger */
29	syscall(SYS_getpgid);
30
31	ASSERT_EQ(skel->bss->output_val1, 2000 + 2000, "output_val1");
32	ASSERT_EQ(skel->bss->output_ctx1, SYS_getpgid, "output_ctx1");
33	ASSERT_EQ(skel->bss->output_weak1, 42, "output_weak1");
34
35	ASSERT_EQ(skel->bss->output_val2, 2 * 1000 + 2 * (2 * 1000), "output_val2");
36	ASSERT_EQ(skel->bss->output_ctx2, SYS_getpgid, "output_ctx2");
37	/* output_weak2 should never be updated */
38	ASSERT_EQ(skel->bss->output_weak2, 0, "output_weak2");
39
40cleanup:
41	linked_funcs__destroy(skel);
42}