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
8 void 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
41 cleanup:
42 linked_vars__destroy(skel);
43 }
44
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