Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1// SPDX-License-Identifier: GPL-2.0
2/* Copyright (C) 2025 Red Hat, Inc.*/
3#include <test_progs.h>
4#include "string_kfuncs_success.skel.h"
5#include "string_kfuncs_failure1.skel.h"
6#include "string_kfuncs_failure2.skel.h"
7#include <sys/mman.h>
8
9static const char * const test_cases[] = {
10 "strcmp",
11 "strcasecmp",
12 "strncasecmp",
13 "strchr",
14 "strchrnul",
15 "strnchr",
16 "strrchr",
17 "strlen",
18 "strnlen",
19 "strspn_str",
20 "strspn_accept",
21 "strcspn_str",
22 "strcspn_reject",
23 "strstr",
24 "strcasestr",
25 "strnstr",
26 "strncasestr",
27};
28
29void run_too_long_tests(void)
30{
31 struct string_kfuncs_failure2 *skel;
32 struct bpf_program *prog;
33 char test_name[256];
34 int err, i;
35
36 skel = string_kfuncs_failure2__open_and_load();
37 if (!ASSERT_OK_PTR(skel, "string_kfuncs_failure2__open_and_load"))
38 return;
39
40 memset(skel->bss->long_str, 'a', sizeof(skel->bss->long_str));
41
42 for (i = 0; i < ARRAY_SIZE(test_cases); i++) {
43 sprintf(test_name, "test_%s_too_long", test_cases[i]);
44 if (!test__start_subtest(test_name))
45 continue;
46
47 prog = bpf_object__find_program_by_name(skel->obj, test_name);
48 if (!ASSERT_OK_PTR(prog, "bpf_object__find_program_by_name"))
49 goto cleanup;
50
51 LIBBPF_OPTS(bpf_test_run_opts, topts);
52 err = bpf_prog_test_run_opts(bpf_program__fd(prog), &topts);
53 if (!ASSERT_OK(err, "bpf_prog_test_run"))
54 goto cleanup;
55
56 ASSERT_EQ(topts.retval, -E2BIG, "reading too long string fails with -E2BIG");
57 }
58
59cleanup:
60 string_kfuncs_failure2__destroy(skel);
61}
62
63void test_string_kfuncs(void)
64{
65 RUN_TESTS(string_kfuncs_success);
66 RUN_TESTS(string_kfuncs_failure1);
67
68 run_too_long_tests();
69}