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