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