tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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}