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_vars.skel.h"
7
8void test_linked_vars(void)
9{
10	int err;
11	struct linked_vars *skel;
12
13	skel = linked_vars__open();
14	if (!ASSERT_OK_PTR(skel, "skel_open"))
15		return;
16
17	skel->bss->input_bss1 = 1000;
18	skel->bss->input_bss2 = 2000;
19	skel->bss->input_bss_weak = 3000;
20
21	err = linked_vars__load(skel);
22	if (!ASSERT_OK(err, "skel_load"))
23		goto cleanup;
24
25	err = linked_vars__attach(skel);
26	if (!ASSERT_OK(err, "skel_attach"))
27		goto cleanup;
28
29	/* trigger */
30	syscall(SYS_getpgid);
31
32	ASSERT_EQ(skel->bss->output_bss1, 1000 + 2000 + 3000, "output_bss1");
33	ASSERT_EQ(skel->bss->output_bss2, 1000 + 2000 + 3000, "output_bss2");
34	/* 10 comes from "winner" input_data_weak in first obj file */
35	ASSERT_EQ(skel->bss->output_data1, 1 + 2 + 10, "output_bss1");
36	ASSERT_EQ(skel->bss->output_data2, 1 + 2 + 10, "output_bss2");
37	/* 100 comes from "winner" input_rodata_weak in first obj file */
38	ASSERT_EQ(skel->bss->output_rodata1, 11 + 22 + 100, "output_weak1");
39	ASSERT_EQ(skel->bss->output_rodata2, 11 + 22 + 100, "output_weak2");
40
41cleanup:
42	linked_vars__destroy(skel);
43}
44