[PATCHv5 bpf-next 20/28] selftests/bpf: Add uprobe_multi api test

Jiri Olsa
2023-07-30T13:45:49Z

Adding uprobe_multi test for bpf_program__attach_uprobe_multi
attach function.

Testing attachment using glob patterns and via bpf_uprobe_multi_opts
paths/syms fields.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
---
.../bpf/prog_tests/uprobe_multi_test.c | 65 +++++++++++++++++++
1 file changed, 65 insertions(+)

diff --git a/tools/testing/selftests/bpf/prog_tests/uprobe_multi_test.c b/tools/testing/selftests/bpf/prog_tests/uprobe_multi_test.c
index 5cd1116bbb62..2ac8954123e4 100644
--- a/tools/testing/selftests/bpf/prog_tests/uprobe_multi_test.c
+++ b/tools/testing/selftests/bpf/prog_tests/uprobe_multi_test.c
@@ -69,8 +69,73 @@ static void test_skel_api(void)
uprobe_multi__destroy(skel);
}

+static void
+test_attach_api(const char *binary, const char *pattern, struct bpf_uprobe_multi_opts *opts)
+{
+ struct uprobe_multi *skel = NULL;
+
+ skel = uprobe_multi__open_and_load();
+ if (!ASSERT_OK_PTR(skel, "uprobe_multi__open_and_load"))
+ goto cleanup;
+
+ opts->retprobe = false;
+ skel->links.uprobe = bpf_program__attach_uprobe_multi(skel->progs.uprobe, -1,
+ binary, pattern, opts);
+ if (!ASSERT_OK_PTR(skel->links.uprobe, "bpf_program__attach_uprobe_multi"))
+ goto cleanup;
+
+ opts->retprobe = true;
+ skel->links.uretprobe = bpf_program__attach_uprobe_multi(skel->progs.uretprobe, -1,
+ binary, pattern, opts);
+ if (!ASSERT_OK_PTR(skel->links.uretprobe, "bpf_program__attach_uprobe_multi"))
+ goto cleanup;
+
+ opts->retprobe = false;
+ skel->links.uprobe_sleep = bpf_program__attach_uprobe_multi(skel->progs.uprobe_sleep, -1,
+ binary, pattern, opts);
+ if (!ASSERT_OK_PTR(skel->links.uprobe_sleep, "bpf_program__attach_uprobe_multi"))
+ goto cleanup;
+
+ opts->retprobe = true;
+ skel->links.uretprobe_sleep = bpf_program__attach_uprobe_multi(skel->progs.uretprobe_sleep,
+ -1, binary, pattern, opts);
+ if (!ASSERT_OK_PTR(skel->links.uretprobe_sleep, "bpf_program__attach_uprobe_multi"))
+ goto cleanup;
+
+ uprobe_multi_test_run(skel);
+
+cleanup:
+ uprobe_multi__destroy(skel);
+}
+
+static void test_attach_api_pattern(void)
+{
+ LIBBPF_OPTS(bpf_uprobe_multi_opts, opts);
+
+ test_attach_api("/proc/self/exe", "uprobe_multi_func_*", &opts);
+ test_attach_api("/proc/self/exe", "uprobe_multi_func_?", &opts);
+}
+
+static void test_attach_api_syms(void)
+{
+ LIBBPF_OPTS(bpf_uprobe_multi_opts, opts);
+ const char *syms[3] = {
+ "uprobe_multi_func_1",
+ "uprobe_multi_func_2",
+ "uprobe_multi_func_3",
+ };
+
+ opts.syms = syms;
+ opts.cnt = ARRAY_SIZE(syms);
+ test_attach_api("/proc/self/exe", NULL, &opts);
+}
+
void test_uprobe_multi_test(void)
{
if (test__start_subtest("skel_api"))
test_skel_api();
+ if (test__start_subtest("attach_api_pattern"))
+ test_attach_api_pattern();
+ if (test__start_subtest("attach_api_syms"))
+ test_attach_api_syms();
}
--
2.41.0