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
8 void 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
46 cleanup:
47 linked_funcs__destroy(skel);
48 }
49
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