diff options
Diffstat (limited to 'tools/testing/selftests/bpf/prog_tests/test_struct_ops_module.c')
| -rw-r--r-- | tools/testing/selftests/bpf/prog_tests/test_struct_ops_module.c | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/prog_tests/test_struct_ops_module.c b/tools/testing/selftests/bpf/prog_tests/test_struct_ops_module.c index f3c61ebad323..3785b648c8ad 100644 --- a/tools/testing/selftests/bpf/prog_tests/test_struct_ops_module.c +++ b/tools/testing/selftests/bpf/prog_tests/test_struct_ops_module.c @@ -5,6 +5,7 @@ #include "struct_ops_module.skel.h" #include "struct_ops_nulled_out_cb.skel.h" +#include "struct_ops_forgotten_cb.skel.h" static void check_map_info(struct bpf_map_info *info) { @@ -199,6 +200,48 @@ cleanup: struct_ops_nulled_out_cb__destroy(skel); } +/* validate that libbpf generates reasonable error message if struct_ops is + * not referenced in any struct_ops map + */ +static void test_struct_ops_forgotten_cb(void) +{ + struct struct_ops_forgotten_cb *skel; + char *log; + int err; + + skel = struct_ops_forgotten_cb__open(); + if (!ASSERT_OK_PTR(skel, "skel_open")) + return; + + start_libbpf_log_capture(); + + err = struct_ops_forgotten_cb__load(skel); + if (!ASSERT_ERR(err, "skel_load")) + goto cleanup; + + log = stop_libbpf_log_capture(); + ASSERT_HAS_SUBSTR(log, + "prog 'test_1_forgotten': SEC(\"struct_ops\") program isn't referenced anywhere, did you forget to use it?", + "libbpf_log"); + free(log); + + struct_ops_forgotten_cb__destroy(skel); + + /* now let's programmatically use it, we should be fine now */ + skel = struct_ops_forgotten_cb__open(); + if (!ASSERT_OK_PTR(skel, "skel_open")) + return; + + skel->struct_ops.ops->test_1 = skel->progs.test_1_forgotten; /* not anymore */ + + err = struct_ops_forgotten_cb__load(skel); + if (!ASSERT_OK(err, "skel_load")) + goto cleanup; + +cleanup: + struct_ops_forgotten_cb__destroy(skel); +} + void serial_test_struct_ops_module(void) { if (test__start_subtest("test_struct_ops_load")) @@ -209,5 +252,7 @@ void serial_test_struct_ops_module(void) test_struct_ops_incompatible(); if (test__start_subtest("test_struct_ops_null_out_cb")) test_struct_ops_nulled_out_cb(); + if (test__start_subtest("struct_ops_forgotten_cb")) + test_struct_ops_forgotten_cb(); } |