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	/* handler1 and handler2 are marked as SEC("?raw_tp/sys_enter") and
18	 * are set to not autoload by default
19	 */
20	bpf_program__set_autoload(skel->progs.handler1, true);
21	bpf_program__set_autoload(skel->progs.handler2, true);
22
23	skel->rodata->my_tid = syscall(SYS_gettid);
24	skel->bss->syscall_id = SYS_getpgid;
25
26	err = linked_funcs__load(skel);
27	if (!ASSERT_OK(err, "skel_load"))
28		goto cleanup;
29
30	err = linked_funcs__attach(skel);
31	if (!ASSERT_OK(err, "skel_attach"))
32		goto cleanup;
33
34	/* trigger */
35	syscall(SYS_getpgid);
36
37	ASSERT_EQ(skel->bss->output_val1, 2000 + 2000, "output_val1");
38	ASSERT_EQ(skel->bss->output_ctx1, SYS_getpgid, "output_ctx1");
39	ASSERT_EQ(skel->bss->output_weak1, 42, "output_weak1");
40
41	ASSERT_EQ(skel->bss->output_val2, 2 * 1000 + 2 * (2 * 1000), "output_val2");
42	ASSERT_EQ(skel->bss->output_ctx2, SYS_getpgid, "output_ctx2");
43	/* output_weak2 should never be updated */
44	ASSERT_EQ(skel->bss->output_weak2, 0, "output_weak2");
45
46cleanup:
47	linked_funcs__destroy(skel);
48}
49