// SPDX-License-Identifier: GPL-2.0 /* Copyright (C) 2025 Red Hat, Inc.*/ #include <test_progs.h> #include "string_kfuncs_success.skel.h" #include "string_kfuncs_failure1.skel.h" #include "string_kfuncs_failure2.skel.h" #include <sys/mman.h> static const char * const test_cases[] = { "strcmp", "strcasecmp", "strchr", "strchrnul", "strnchr", "strrchr", "strlen", "strnlen", "strspn_str", "strspn_accept", "strcspn_str", "strcspn_reject", "strstr", "strnstr", }; void run_too_long_tests(void) { struct string_kfuncs_failure2 *skel; struct bpf_program *prog; char test_name[256]; int err, i; skel = string_kfuncs_failure2__open_and_load(); if (!ASSERT_OK_PTR(skel, "string_kfuncs_failure2__open_and_load")) return; memset(skel->bss->long_str, 'a', sizeof(skel->bss->long_str)); for (i = 0; i < ARRAY_SIZE(test_cases); i++) { sprintf(test_name, "test_%s_too_long", test_cases[i]); if (!test__start_subtest(test_name)) continue; prog = bpf_object__find_program_by_name(skel->obj, test_name); if (!ASSERT_OK_PTR(prog, "bpf_object__find_program_by_name")) goto cleanup; LIBBPF_OPTS(bpf_test_run_opts, topts); err = bpf_prog_test_run_opts(bpf_program__fd(prog), &topts); if (!ASSERT_OK(err, "bpf_prog_test_run")) goto cleanup; ASSERT_EQ(topts.retval, -E2BIG, "reading too long string fails with -E2BIG"); } cleanup: string_kfuncs_failure2__destroy(skel); } void test_string_kfuncs(void) { RUN_TESTS(string_kfuncs_success); RUN_TESTS(string_kfuncs_failure1); run_too_long_tests(); }