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