1/*
2 * Test cases for lib/uuid.c module.
3 */
4#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
5
6#include <linux/init.h>
7#include <linux/kernel.h>
8#include <linux/module.h>
9#include <linux/string.h>
10#include <linux/uuid.h>
11
12struct test_uuid_data {
13	const char *uuid;
14	guid_t le;
15	uuid_t be;
16};
17
18static const struct test_uuid_data test_uuid_test_data[] = {
19	{
20		.uuid = "c33f4995-3701-450e-9fbf-206a2e98e576",
21		.le = GUID_INIT(0xc33f4995, 0x3701, 0x450e, 0x9f, 0xbf, 0x20, 0x6a, 0x2e, 0x98, 0xe5, 0x76),
22		.be = UUID_INIT(0xc33f4995, 0x3701, 0x450e, 0x9f, 0xbf, 0x20, 0x6a, 0x2e, 0x98, 0xe5, 0x76),
23	},
24	{
25		.uuid = "64b4371c-77c1-48f9-8221-29f054fc023b",
26		.le = GUID_INIT(0x64b4371c, 0x77c1, 0x48f9, 0x82, 0x21, 0x29, 0xf0, 0x54, 0xfc, 0x02, 0x3b),
27		.be = UUID_INIT(0x64b4371c, 0x77c1, 0x48f9, 0x82, 0x21, 0x29, 0xf0, 0x54, 0xfc, 0x02, 0x3b),
28	},
29	{
30		.uuid = "0cb4ddff-a545-4401-9d06-688af53e7f84",
31		.le = GUID_INIT(0x0cb4ddff, 0xa545, 0x4401, 0x9d, 0x06, 0x68, 0x8a, 0xf5, 0x3e, 0x7f, 0x84),
32		.be = UUID_INIT(0x0cb4ddff, 0xa545, 0x4401, 0x9d, 0x06, 0x68, 0x8a, 0xf5, 0x3e, 0x7f, 0x84),
33	},
34};
35
36static const char * const test_uuid_wrong_data[] = {
37	"c33f4995-3701-450e-9fbf206a2e98e576 ",	/* no hyphen(s) */
38	"64b4371c-77c1-48f9-8221-29f054XX023b",	/* invalid character(s) */
39	"0cb4ddff-a545-4401-9d06-688af53e",	/* not enough data */
40};
41
42static unsigned total_tests __initdata;
43static unsigned failed_tests __initdata;
44
45static void __init test_uuid_failed(const char *prefix, bool wrong, bool be,
46				    const char *data, const char *actual)
47{
48	pr_err("%s test #%u %s %s data: '%s'\n",
49	       prefix,
50	       total_tests,
51	       wrong ? "passed on wrong" : "failed on",
52	       be ? "BE" : "LE",
53	       data);
54	if (actual && *actual)
55		pr_err("%s test #%u actual data: '%s'\n",
56		       prefix,
57		       total_tests,
58		       actual);
59	failed_tests++;
60}
61
62static void __init test_uuid_test(const struct test_uuid_data *data)
63{
64	guid_t le;
65	uuid_t be;
66	char buf[48];
67
68	/* LE */
69	total_tests++;
70	if (guid_parse(data->uuid, &le))
71		test_uuid_failed("conversion", false, false, data->uuid, NULL);
72
73	total_tests++;
74	if (!guid_equal(&data->le, &le)) {
75		sprintf(buf, "%pUl", &le);
76		test_uuid_failed("cmp", false, false, data->uuid, buf);
77	}
78
79	/* BE */
80	total_tests++;
81	if (uuid_parse(data->uuid, &be))
82		test_uuid_failed("conversion", false, true, data->uuid, NULL);
83
84	total_tests++;
85	if (!uuid_equal(&data->be, &be)) {
86		sprintf(buf, "%pUb", &be);
87		test_uuid_failed("cmp", false, true, data->uuid, buf);
88	}
89}
90
91static void __init test_uuid_wrong(const char *data)
92{
93	guid_t le;
94	uuid_t be;
95
96	/* LE */
97	total_tests++;
98	if (!guid_parse(data, &le))
99		test_uuid_failed("negative", true, false, data, NULL);
100
101	/* BE */
102	total_tests++;
103	if (!uuid_parse(data, &be))
104		test_uuid_failed("negative", true, true, data, NULL);
105}
106
107static int __init test_uuid_init(void)
108{
109	unsigned int i;
110
111	for (i = 0; i < ARRAY_SIZE(test_uuid_test_data); i++)
112		test_uuid_test(&test_uuid_test_data[i]);
113
114	for (i = 0; i < ARRAY_SIZE(test_uuid_wrong_data); i++)
115		test_uuid_wrong(test_uuid_wrong_data[i]);
116
117	if (failed_tests == 0)
118		pr_info("all %u tests passed\n", total_tests);
119	else
120		pr_err("failed %u out of %u tests\n", failed_tests, total_tests);
121
122	return failed_tests ? -EINVAL : 0;
123}
124module_init(test_uuid_init);
125
126static void __exit test_uuid_exit(void)
127{
128	/* do nothing */
129}
130module_exit(test_uuid_exit);
131
132MODULE_AUTHOR("Andy Shevchenko <andriy.shevchenko@linux.intel.com>");
133MODULE_LICENSE("Dual BSD/GPL");
134