[PATCH bpf-next 16/17] selftests/bpf: Add tracing multi attach fails test

[Jiri Olsa]

Adding tests for attach fails on tracing multi link.

Signed-off-by: Jiri Olsa <jo...@kernel.org>
---
 .../selftests/bpf/prog_tests/tracing_multi.c  | 56 +++++++++++++++++++
 1 file changed, 56 insertions(+)

diff --git a/tools/testing/selftests/bpf/prog_tests/tracing_multi.c 
b/tools/testing/selftests/bpf/prog_tests/tracing_multi.c
index 3d9327b80e88..ba86a88844e6 100644
--- a/tools/testing/selftests/bpf/prog_tests/tracing_multi.c
+++ b/tools/testing/selftests/bpf/prog_tests/tracing_multi.c
@@ -340,6 +340,60 @@ static void test_session(void)
        tracing_multi_session__destroy(skel);
 }
 
+static void test_attach_api_fails(void)
+{
+       LIBBPF_OPTS(bpf_tracing_multi_opts, opts);
+       struct tracing_multi *skel = NULL;
+       __u64 cookies[2];
+       __u32 ids[2];
+
+       skel = tracing_multi__open_and_load();
+       if (!ASSERT_OK_PTR(skel, "tracing_multi__open_and_load"))
+               return;
+
+       /* fail#1 pattern and opts NULL */
+       skel->links.test_fentry = 
bpf_program__attach_tracing_multi(skel->progs.test_fentry,
+                                               NULL, NULL);
+       if (!ASSERT_ERR_PTR(skel->links.test_fentry, 
"bpf_program__attach_tracing_multi"))
+               goto cleanup;
+
+       /* fail#2 pattern and ids */
+       opts.ids = ids;
+       opts.cnt = 2;
+
+       skel->links.test_fentry = 
bpf_program__attach_tracing_multi(skel->progs.test_fentry,
+                                               "bpf_fentry_test*", &opts);
+       if (!ASSERT_ERR_PTR(skel->links.test_fentry, 
"bpf_program__attach_tracing_multi"))
+               goto cleanup;
+
+       /* fail#3 pattern and cookies */
+       opts.ids = NULL;
+       opts.cnt = 2;
+       opts.cookies = cookies;
+
+       skel->links.test_fentry = 
bpf_program__attach_tracing_multi(skel->progs.test_fentry,
+                                               "bpf_fentry_test*", &opts);
+       if (!ASSERT_ERR_PTR(skel->links.test_fentry, 
"bpf_program__attach_tracing_multi"))
+               goto cleanup;
+
+       /* fail#4 bogus pattern */
+       skel->links.test_fentry = 
bpf_program__attach_tracing_multi(skel->progs.test_fentry,
+                                               "bpf_not_really_a_function*", 
NULL);
+       if (!ASSERT_ERR_PTR(skel->links.test_fentry, 
"bpf_program__attach_tracing_multi"))
+               goto cleanup;
+
+       /* fail#5 abnormal cnt */
+       opts.ids = ids;
+       opts.cnt = INT_MAX;
+
+       skel->links.test_fentry = 
bpf_program__attach_tracing_multi(skel->progs.test_fentry,
+                                               NULL, &opts);
+       ASSERT_ERR_PTR(skel->links.test_fentry, 
"bpf_program__attach_tracing_multi");
+
+cleanup:
+       tracing_multi__destroy(skel);
+}
+
 void test_tracing_multi_test(void)
 {
 #ifndef __x86_64__
@@ -359,4 +413,6 @@ void test_tracing_multi_test(void)
                test_link_api_ids(true);
        if (test__start_subtest("session"))
                test_session();
+       if (test__start_subtest("attach_api_fails"))
+               test_attach_api_fails();
 }
-- 
2.52.0