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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-11 08:27:49 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-11 08:27:49 +0000 |
commit | ace9429bb58fd418f0c81d4c2835699bddf6bde6 (patch) | |
tree | b2d64bc10158fdd5497876388cd68142ca374ed3 /tools/testing/selftests/bpf/prog_tests/kfunc_dynptr_param.c | |
parent | Initial commit. (diff) | |
download | linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.tar.xz linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.zip |
Adding upstream version 6.6.15.upstream/6.6.15
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tools/testing/selftests/bpf/prog_tests/kfunc_dynptr_param.c')
-rw-r--r-- | tools/testing/selftests/bpf/prog_tests/kfunc_dynptr_param.c | 119 |
1 files changed, 119 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/prog_tests/kfunc_dynptr_param.c b/tools/testing/selftests/bpf/prog_tests/kfunc_dynptr_param.c new file mode 100644 index 0000000000..8cd298b78e --- /dev/null +++ b/tools/testing/selftests/bpf/prog_tests/kfunc_dynptr_param.c @@ -0,0 +1,119 @@ +// SPDX-License-Identifier: GPL-2.0 + +/* + * Copyright (c) 2022 Facebook + * Copyright (C) 2022 Huawei Technologies Duesseldorf GmbH + * + * Author: Roberto Sassu <roberto.sassu@huawei.com> + */ + +#include <test_progs.h> +#include "test_kfunc_dynptr_param.skel.h" + +static struct { + const char *prog_name; + int expected_runtime_err; +} kfunc_dynptr_tests[] = { + {"dynptr_data_null", -EBADMSG}, +}; + +static bool kfunc_not_supported; + +static int libbpf_print_cb(enum libbpf_print_level level, const char *fmt, + va_list args) +{ + if (strcmp(fmt, "libbpf: extern (func ksym) '%s': not found in kernel or module BTFs\n")) + return 0; + + if (strcmp(va_arg(args, char *), "bpf_verify_pkcs7_signature")) + return 0; + + kfunc_not_supported = true; + return 0; +} + +static bool has_pkcs7_kfunc_support(void) +{ + struct test_kfunc_dynptr_param *skel; + libbpf_print_fn_t old_print_cb; + int err; + + skel = test_kfunc_dynptr_param__open(); + if (!ASSERT_OK_PTR(skel, "test_kfunc_dynptr_param__open")) + return false; + + kfunc_not_supported = false; + + old_print_cb = libbpf_set_print(libbpf_print_cb); + err = test_kfunc_dynptr_param__load(skel); + libbpf_set_print(old_print_cb); + + if (err < 0 && kfunc_not_supported) { + fprintf(stderr, + "%s:SKIP:bpf_verify_pkcs7_signature() kfunc not supported\n", + __func__); + test_kfunc_dynptr_param__destroy(skel); + return false; + } + + test_kfunc_dynptr_param__destroy(skel); + + return true; +} + +static void verify_success(const char *prog_name, int expected_runtime_err) +{ + struct test_kfunc_dynptr_param *skel; + struct bpf_program *prog; + struct bpf_link *link; + __u32 next_id; + int err; + + skel = test_kfunc_dynptr_param__open(); + if (!ASSERT_OK_PTR(skel, "test_kfunc_dynptr_param__open")) + return; + + skel->bss->pid = getpid(); + + err = test_kfunc_dynptr_param__load(skel); + + if (!ASSERT_OK(err, "test_kfunc_dynptr_param__load")) + goto cleanup; + + prog = bpf_object__find_program_by_name(skel->obj, prog_name); + if (!ASSERT_OK_PTR(prog, "bpf_object__find_program_by_name")) + goto cleanup; + + link = bpf_program__attach(prog); + if (!ASSERT_OK_PTR(link, "bpf_program__attach")) + goto cleanup; + + err = bpf_prog_get_next_id(0, &next_id); + + bpf_link__destroy(link); + + if (!ASSERT_OK(err, "bpf_prog_get_next_id")) + goto cleanup; + + ASSERT_EQ(skel->bss->err, expected_runtime_err, "err"); + +cleanup: + test_kfunc_dynptr_param__destroy(skel); +} + +void test_kfunc_dynptr_param(void) +{ + int i; + + if (!has_pkcs7_kfunc_support()) + return; + + for (i = 0; i < ARRAY_SIZE(kfunc_dynptr_tests); i++) { + if (!test__start_subtest(kfunc_dynptr_tests[i].prog_name)) + continue; + + verify_success(kfunc_dynptr_tests[i].prog_name, + kfunc_dynptr_tests[i].expected_runtime_err); + } + RUN_TESTS(test_kfunc_dynptr_param); +} |