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");