1 // SPDX-License-Identifier: GPL-2.0 2 /* Copyright (c) 2020 Facebook */ 3 #include <test_progs.h> 4 5 const char *err_str; 6 bool found; 7 8 static int libbpf_debug_print(enum libbpf_print_level level, 9 const char *format, va_list args) 10 { 11 char *log_buf; 12 13 if (level != LIBBPF_WARN || 14 strcmp(format, "libbpf: \n%s\n")) { 15 vprintf(format, args); 16 return 0; 17 } 18 19 log_buf = va_arg(args, char *); 20 if (!log_buf) 21 goto out; 22 if (strstr(log_buf, err_str) == 0) 23 found = true; 24 out: 25 printf(format, log_buf); 26 return 0; 27 } 28 29 extern int extra_prog_load_log_flags; 30 31 static int check_load(const char *file) 32 { 33 struct bpf_prog_load_attr attr; 34 struct bpf_object *obj = NULL; 35 int err, prog_fd; 36 37 memset(&attr, 0, sizeof(struct bpf_prog_load_attr)); 38 attr.file = file; 39 attr.prog_type = BPF_PROG_TYPE_UNSPEC; 40 attr.log_level = extra_prog_load_log_flags; 41 attr.prog_flags = BPF_F_TEST_RND_HI32; 42 found = false; 43 err = bpf_prog_load_xattr(&attr, &obj, &prog_fd); 44 bpf_object__close(obj); 45 return err; 46 } 47 48 struct test_def { 49 const char *file; 50 const char *err_str; 51 }; 52 53 void test_test_global_funcs(void) 54 { 55 struct test_def tests[] = { 56 { "test_global_func1.o", "combined stack size of 4 calls is 544" }, 57 { "test_global_func2.o" }, 58 { "test_global_func3.o" , "the call stack of 8 frames" }, 59 { "test_global_func4.o" }, 60 { "test_global_func5.o" , "expected pointer to ctx, but got PTR" }, 61 { "test_global_func6.o" , "modified ctx ptr R2" }, 62 { "test_global_func7.o" , "foo() doesn't return scalar" }, 63 }; 64 libbpf_print_fn_t old_print_fn = NULL; 65 int err, i, duration = 0; 66 67 old_print_fn = libbpf_set_print(libbpf_debug_print); 68 69 for (i = 0; i < ARRAY_SIZE(tests); i++) { 70 const struct test_def *test = &tests[i]; 71 72 if (!test__start_subtest(test->file)) 73 continue; 74 75 err_str = test->err_str; 76 err = check_load(test->file); 77 CHECK_FAIL(!!err ^ !!err_str); 78 if (err_str) 79 CHECK(found, "", "expected string '%s'", err_str); 80 } 81 libbpf_set_print(old_print_fn); 82 } 83