diff options
Diffstat (limited to 'tools/testing/selftests/bpf/test_loader.c')
| -rw-r--r-- | tools/testing/selftests/bpf/test_loader.c | 46 |
1 files changed, 37 insertions, 9 deletions
diff --git a/tools/testing/selftests/bpf/test_loader.c b/tools/testing/selftests/bpf/test_loader.c index 53b06647cf57..9551d8d5f8f9 100644 --- a/tools/testing/selftests/bpf/test_loader.c +++ b/tools/testing/selftests/bpf/test_loader.c @@ -37,6 +37,7 @@ #define TEST_TAG_JITED_PFX "comment:test_jited=" #define TEST_TAG_JITED_PFX_UNPRIV "comment:test_jited_unpriv=" #define TEST_TAG_CAPS_UNPRIV "comment:test_caps_unpriv=" +#define TEST_TAG_LOAD_MODE_PFX "comment:load_mode=" /* Warning: duplicated in bpf_misc.h */ #define POINTER_VALUE 0xcafe4all @@ -55,6 +56,11 @@ enum mode { UNPRIV = 2 }; +enum load_mode { + JITED = 1 << 0, + NO_JITED = 1 << 1, +}; + struct expect_msg { const char *substr; /* substring match */ regex_t regex; @@ -87,6 +93,7 @@ struct test_spec { int prog_flags; int mode_mask; int arch_mask; + int load_mask; bool auxiliary; bool valid; }; @@ -406,6 +413,7 @@ static int parse_test_spec(struct test_loader *tester, bool collect_jit = false; int func_id, i, err = 0; u32 arch_mask = 0; + u32 load_mask = 0; struct btf *btf; enum arch arch; @@ -580,10 +588,22 @@ static int parse_test_spec(struct test_loader *tester, if (err) goto cleanup; spec->mode_mask |= UNPRIV; + } else if (str_has_pfx(s, TEST_TAG_LOAD_MODE_PFX)) { + val = s + sizeof(TEST_TAG_LOAD_MODE_PFX) - 1; + if (strcmp(val, "jited") == 0) { + load_mask = JITED; + } else if (strcmp(val, "no_jited") == 0) { + load_mask = NO_JITED; + } else { + PRINT_FAIL("bad load spec: '%s'", val); + err = -EINVAL; + goto cleanup; + } } } spec->arch_mask = arch_mask ?: -1; + spec->load_mask = load_mask ?: (JITED | NO_JITED); if (spec->mode_mask == 0) spec->mode_mask = PRIV; @@ -773,7 +793,7 @@ static int drop_capabilities(struct cap_state *caps) err = cap_disable_effective(caps_to_drop, &caps->old_caps); if (err) { - PRINT_FAIL("failed to drop capabilities: %i, %s\n", err, strerror(err)); + PRINT_FAIL("failed to drop capabilities: %i, %s\n", err, strerror(-err)); return err; } @@ -790,7 +810,7 @@ static int restore_capabilities(struct cap_state *caps) err = cap_enable_effective(caps->old_caps, NULL); if (err) - PRINT_FAIL("failed to restore capabilities: %i, %s\n", err, strerror(err)); + PRINT_FAIL("failed to restore capabilities: %i, %s\n", err, strerror(-err)); caps->initialized = false; return err; } @@ -928,6 +948,7 @@ void run_subtest(struct test_loader *tester, bool unpriv) { struct test_subspec *subspec = unpriv ? &spec->unpriv : &spec->priv; + int current_runtime = is_jit_enabled() ? JITED : NO_JITED; struct bpf_program *tprog = NULL, *tprog_iter; struct bpf_link *link, *links[32] = {}; struct test_spec *spec_iter; @@ -946,6 +967,11 @@ void run_subtest(struct test_loader *tester, return; } + if ((current_runtime & spec->load_mask) == 0) { + test__skip(); + return; + } + if (unpriv) { if (!can_execute_unpriv(tester, spec)) { test__skip(); @@ -959,7 +985,7 @@ void run_subtest(struct test_loader *tester, if (subspec->caps) { err = cap_enable_effective(subspec->caps, NULL); if (err) { - PRINT_FAIL("failed to set capabilities: %i, %s\n", err, strerror(err)); + PRINT_FAIL("failed to set capabilities: %i, %s\n", err, strerror(-err)); goto subtest_cleanup; } } @@ -1016,6 +1042,14 @@ void run_subtest(struct test_loader *tester, emit_verifier_log(tester->log_buf, false /*force*/); validate_msgs(tester->log_buf, &subspec->expect_msgs, emit_verifier_log); + /* Restore capabilities because the kernel will silently ignore requests + * for program info (such as xlated program text) if we are not + * bpf-capable. Also, for some reason test_verifier executes programs + * with all capabilities restored. Do the same here. + */ + if (restore_capabilities(&caps)) + goto tobj_cleanup; + if (subspec->expect_xlated.cnt) { err = get_xlated_program_text(bpf_program__fd(tprog), tester->log_buf, tester->log_buf_sz); @@ -1041,12 +1075,6 @@ void run_subtest(struct test_loader *tester, } if (should_do_test_run(spec, subspec)) { - /* For some reason test_verifier executes programs - * with all capabilities restored. Do the same here. - */ - if (restore_capabilities(&caps)) - goto tobj_cleanup; - /* Do bpf_map__attach_struct_ops() for each struct_ops map. * This should trigger bpf_struct_ops->reg callback on kernel side. */ |