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 (err_str && 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_object *obj = NULL;
34 	struct bpf_program *prog;
35 	int err;
36 
37 	found = false;
38 
39 	obj = bpf_object__open_file(file, NULL);
40 	err = libbpf_get_error(obj);
41 	if (err)
42 		return err;
43 
44 	prog = bpf_object__next_program(obj, NULL);
45 	if (!prog) {
46 		err = -ENOENT;
47 		goto err_out;
48 	}
49 
50 	bpf_program__set_flags(prog, BPF_F_TEST_RND_HI32);
51 	bpf_program__set_log_level(prog, extra_prog_load_log_flags);
52 
53 	err = bpf_object__load(obj);
54 
55 err_out:
56 	bpf_object__close(obj);
57 	return err;
58 }
59 
60 struct test_def {
61 	const char *file;
62 	const char *err_str;
63 };
64 
65 void test_test_global_funcs(void)
66 {
67 	struct test_def tests[] = {
68 		{ "test_global_func1.o", "combined stack size of 4 calls is 544" },
69 		{ "test_global_func2.o" },
70 		{ "test_global_func3.o" , "the call stack of 8 frames" },
71 		{ "test_global_func4.o" },
72 		{ "test_global_func5.o" , "expected pointer to ctx, but got PTR" },
73 		{ "test_global_func6.o" , "modified ctx ptr R2" },
74 		{ "test_global_func7.o" , "foo() doesn't return scalar" },
75 		{ "test_global_func8.o" },
76 		{ "test_global_func9.o" },
77 		{ "test_global_func10.o", "invalid indirect read from stack" },
78 		{ "test_global_func11.o", "Caller passes invalid args into func#1" },
79 		{ "test_global_func12.o", "invalid mem access 'mem_or_null'" },
80 		{ "test_global_func13.o", "Caller passes invalid args into func#1" },
81 		{ "test_global_func14.o", "reference type('FWD S') size cannot be determined" },
82 		{ "test_global_func15.o", "At program exit the register R0 has value" },
83 		{ "test_global_func16.o", "invalid indirect read from stack" },
84 	};
85 	libbpf_print_fn_t old_print_fn = NULL;
86 	int err, i, duration = 0;
87 
88 	old_print_fn = libbpf_set_print(libbpf_debug_print);
89 
90 	for (i = 0; i < ARRAY_SIZE(tests); i++) {
91 		const struct test_def *test = &tests[i];
92 
93 		if (!test__start_subtest(test->file))
94 			continue;
95 
96 		err_str = test->err_str;
97 		err = check_load(test->file);
98 		CHECK_FAIL(!!err ^ !!err_str);
99 		if (err_str)
100 			CHECK(found, "", "expected string '%s'", err_str);
101 	}
102 	libbpf_set_print(old_print_fn);
103 }
104