120 lines
2.6 KiB
C
120 lines
2.6 KiB
C
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// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (c) 2022 Facebook
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* Copyright (C) 2022 Huawei Technologies Duesseldorf GmbH
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*
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* Author: Roberto Sassu <roberto.sassu@huawei.com>
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*/
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#include <test_progs.h>
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#include "test_kfunc_dynptr_param.skel.h"
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static struct {
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const char *prog_name;
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int expected_runtime_err;
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} kfunc_dynptr_tests[] = {
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{"dynptr_data_null", -EBADMSG},
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};
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static bool kfunc_not_supported;
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static int libbpf_print_cb(enum libbpf_print_level level, const char *fmt,
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va_list args)
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{
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if (strcmp(fmt, "libbpf: extern (func ksym) '%s': not found in kernel or module BTFs\n"))
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return 0;
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if (strcmp(va_arg(args, char *), "bpf_verify_pkcs7_signature"))
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return 0;
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kfunc_not_supported = true;
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return 0;
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}
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static bool has_pkcs7_kfunc_support(void)
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{
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struct test_kfunc_dynptr_param *skel;
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libbpf_print_fn_t old_print_cb;
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int err;
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skel = test_kfunc_dynptr_param__open();
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if (!ASSERT_OK_PTR(skel, "test_kfunc_dynptr_param__open"))
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return false;
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kfunc_not_supported = false;
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old_print_cb = libbpf_set_print(libbpf_print_cb);
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err = test_kfunc_dynptr_param__load(skel);
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libbpf_set_print(old_print_cb);
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if (err < 0 && kfunc_not_supported) {
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fprintf(stderr,
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"%s:SKIP:bpf_verify_pkcs7_signature() kfunc not supported\n",
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__func__);
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test_kfunc_dynptr_param__destroy(skel);
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return false;
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}
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test_kfunc_dynptr_param__destroy(skel);
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return true;
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}
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static void verify_success(const char *prog_name, int expected_runtime_err)
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{
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struct test_kfunc_dynptr_param *skel;
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struct bpf_program *prog;
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struct bpf_link *link;
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__u32 next_id;
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int err;
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skel = test_kfunc_dynptr_param__open();
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if (!ASSERT_OK_PTR(skel, "test_kfunc_dynptr_param__open"))
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return;
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skel->bss->pid = getpid();
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err = test_kfunc_dynptr_param__load(skel);
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if (!ASSERT_OK(err, "test_kfunc_dynptr_param__load"))
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goto cleanup;
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prog = bpf_object__find_program_by_name(skel->obj, prog_name);
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if (!ASSERT_OK_PTR(prog, "bpf_object__find_program_by_name"))
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goto cleanup;
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link = bpf_program__attach(prog);
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if (!ASSERT_OK_PTR(link, "bpf_program__attach"))
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goto cleanup;
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err = bpf_prog_get_next_id(0, &next_id);
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bpf_link__destroy(link);
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if (!ASSERT_OK(err, "bpf_prog_get_next_id"))
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goto cleanup;
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ASSERT_EQ(skel->bss->err, expected_runtime_err, "err");
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cleanup:
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test_kfunc_dynptr_param__destroy(skel);
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}
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void test_kfunc_dynptr_param(void)
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{
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int i;
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if (!has_pkcs7_kfunc_support())
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return;
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for (i = 0; i < ARRAY_SIZE(kfunc_dynptr_tests); i++) {
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if (!test__start_subtest(kfunc_dynptr_tests[i].prog_name))
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continue;
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verify_success(kfunc_dynptr_tests[i].prog_name,
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kfunc_dynptr_tests[i].expected_runtime_err);
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}
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RUN_TESTS(test_kfunc_dynptr_param);
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}
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