1 // SPDX-License-Identifier: GPL-2.0
2 #include <test_progs.h>
3 #include "kprobe_multi.skel.h"
4 #include "trace_helpers.h"
5 #include "bpf/libbpf_internal.h"
6
7 static struct ksyms *ksyms;
8
kprobe_multi_testmod_check(struct kprobe_multi * skel)9 static void kprobe_multi_testmod_check(struct kprobe_multi *skel)
10 {
11 ASSERT_EQ(skel->bss->kprobe_testmod_test1_result, 1, "kprobe_test1_result");
12 ASSERT_EQ(skel->bss->kprobe_testmod_test2_result, 1, "kprobe_test2_result");
13 ASSERT_EQ(skel->bss->kprobe_testmod_test3_result, 1, "kprobe_test3_result");
14
15 ASSERT_EQ(skel->bss->kretprobe_testmod_test1_result, 1, "kretprobe_test1_result");
16 ASSERT_EQ(skel->bss->kretprobe_testmod_test2_result, 1, "kretprobe_test2_result");
17 ASSERT_EQ(skel->bss->kretprobe_testmod_test3_result, 1, "kretprobe_test3_result");
18 }
19
test_testmod_attach_api(struct bpf_kprobe_multi_opts * opts)20 static void test_testmod_attach_api(struct bpf_kprobe_multi_opts *opts)
21 {
22 struct kprobe_multi *skel = NULL;
23
24 skel = kprobe_multi__open_and_load();
25 if (!ASSERT_OK_PTR(skel, "fentry_raw_skel_load"))
26 return;
27
28 skel->bss->pid = getpid();
29
30 skel->links.test_kprobe_testmod = bpf_program__attach_kprobe_multi_opts(
31 skel->progs.test_kprobe_testmod,
32 NULL, opts);
33 if (!skel->links.test_kprobe_testmod)
34 goto cleanup;
35
36 opts->retprobe = true;
37 skel->links.test_kretprobe_testmod = bpf_program__attach_kprobe_multi_opts(
38 skel->progs.test_kretprobe_testmod,
39 NULL, opts);
40 if (!skel->links.test_kretprobe_testmod)
41 goto cleanup;
42
43 ASSERT_OK(trigger_module_test_read(1), "trigger_read");
44 kprobe_multi_testmod_check(skel);
45
46 cleanup:
47 kprobe_multi__destroy(skel);
48 }
49
test_testmod_attach_api_addrs(void)50 static void test_testmod_attach_api_addrs(void)
51 {
52 LIBBPF_OPTS(bpf_kprobe_multi_opts, opts);
53 unsigned long long addrs[3];
54
55 addrs[0] = ksym_get_addr_local(ksyms, "bpf_testmod_fentry_test1");
56 ASSERT_NEQ(addrs[0], 0, "ksym_get_addr_local");
57 addrs[1] = ksym_get_addr_local(ksyms, "bpf_testmod_fentry_test2");
58 ASSERT_NEQ(addrs[1], 0, "ksym_get_addr_local");
59 addrs[2] = ksym_get_addr_local(ksyms, "bpf_testmod_fentry_test3");
60 ASSERT_NEQ(addrs[2], 0, "ksym_get_addr_local");
61
62 opts.addrs = (const unsigned long *) addrs;
63 opts.cnt = ARRAY_SIZE(addrs);
64
65 test_testmod_attach_api(&opts);
66 }
67
test_testmod_attach_api_syms(void)68 static void test_testmod_attach_api_syms(void)
69 {
70 LIBBPF_OPTS(bpf_kprobe_multi_opts, opts);
71 const char *syms[3] = {
72 "bpf_testmod_fentry_test1",
73 "bpf_testmod_fentry_test2",
74 "bpf_testmod_fentry_test3",
75 };
76
77 opts.syms = syms;
78 opts.cnt = ARRAY_SIZE(syms);
79 test_testmod_attach_api(&opts);
80 }
81
serial_test_kprobe_multi_testmod_test(void)82 void serial_test_kprobe_multi_testmod_test(void)
83 {
84 ksyms = load_kallsyms_local();
85 if (!ASSERT_OK_PTR(ksyms, "load_kallsyms_local"))
86 return;
87
88 if (test__start_subtest("testmod_attach_api_syms"))
89 test_testmod_attach_api_syms();
90
91 if (test__start_subtest("testmod_attach_api_addrs"))
92 test_testmod_attach_api_addrs();
93
94 free_kallsyms_local(ksyms);
95 }
96