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 "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 29 void 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 59 cleanup: 60 string_kfuncs_failure2__destroy(skel); 61 } 62 63 void test_string_kfuncs(void) 64 { 65 RUN_TESTS(string_kfuncs_success); 66 RUN_TESTS(string_kfuncs_failure1); 67 68 run_too_long_tests(); 69 } 70