selftests/bpf: Add uprobe_multi api test

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>
Link: https://lore.kernel.org/r/20230809083440.3209381-21-jolsa@kernel.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

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 5cd1116..2ac8954 100644 (file)
--- 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 @@ cleanup:
        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();
 }