// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0/* * Test cases for lib/uuid.c module. */ #include <kunit/test.h>#include <linux/uuid.h> struct test_uuid_data {	const char *uuid;	guid_t le;	uuid_t be;}; static const struct test_uuid_data test_uuid_test_data[] = {	{		.uuid = "c33f4995-3701-450e-9fbf-206a2e98e576",		.le = GUID_INIT(0xc33f4995, 0x3701, 0x450e, 0x9f, 0xbf, 0x20, 0x6a, 0x2e, 0x98, 0xe5, 0x76),		.be = UUID_INIT(0xc33f4995, 0x3701, 0x450e, 0x9f, 0xbf, 0x20, 0x6a, 0x2e, 0x98, 0xe5, 0x76),	},	{		.uuid = "64b4371c-77c1-48f9-8221-29f054fc023b",		.le = GUID_INIT(0x64b4371c, 0x77c1, 0x48f9, 0x82, 0x21, 0x29, 0xf0, 0x54, 0xfc, 0x02, 0x3b),		.be = UUID_INIT(0x64b4371c, 0x77c1, 0x48f9, 0x82, 0x21, 0x29, 0xf0, 0x54, 0xfc, 0x02, 0x3b),	},	{		.uuid = "0cb4ddff-a545-4401-9d06-688af53e7f84",		.le = GUID_INIT(0x0cb4ddff, 0xa545, 0x4401, 0x9d, 0x06, 0x68, 0x8a, 0xf5, 0x3e, 0x7f, 0x84),		.be = UUID_INIT(0x0cb4ddff, 0xa545, 0x4401, 0x9d, 0x06, 0x68, 0x8a, 0xf5, 0x3e, 0x7f, 0x84),	},}; static const char * const test_uuid_wrong_data[] = {	"c33f4995-3701-450e-9fbf206a2e98e576 ",	/* no hyphen(s) */	"64b4371c-77c1-48f9-8221-29f054XX023b",	/* invalid character(s) */	"0cb4ddff-a545-4401-9d06-688af53e",	/* not enough data */}; static void uuid_test_guid_valid(struct kunit *test){	unsigned int i;	const struct test_uuid_data *data;	guid_t le; 	for (i = 0; i < ARRAY_SIZE(test_uuid_test_data); i++) {		data = &test_uuid_test_data[i];		KUNIT_EXPECT_EQ(test, guid_parse(data->uuid, &le), 0);		KUNIT_EXPECT_TRUE(test, guid_equal(&data->le, &le));	}} static void uuid_test_uuid_valid(struct kunit *test){	unsigned int i;	const struct test_uuid_data *data;	uuid_t be; 	for (i = 0; i < ARRAY_SIZE(test_uuid_test_data); i++) {		data = &test_uuid_test_data[i];		KUNIT_EXPECT_EQ(test, uuid_parse(data->uuid, &be), 0);		KUNIT_EXPECT_TRUE(test, uuid_equal(&data->be, &be));	}} static void uuid_test_guid_invalid(struct kunit *test){	unsigned int i;	const char *uuid;	guid_t le; 	for (i = 0; i < ARRAY_SIZE(test_uuid_wrong_data); i++) {		uuid = test_uuid_wrong_data[i];		KUNIT_EXPECT_EQ(test, guid_parse(uuid, &le), -EINVAL);	}} static void uuid_test_uuid_invalid(struct kunit *test){	unsigned int i;	const char *uuid;	uuid_t be; 	for (i = 0; i < ARRAY_SIZE(test_uuid_wrong_data); i++) {		uuid = test_uuid_wrong_data[i];		KUNIT_EXPECT_EQ(test, uuid_parse(uuid, &be), -EINVAL);	}} /* * RFC 4122 section 4.4 says random UUIDs/GUIDs (version 4) must have: *   - version 4 in the high nibble of the version byte, *   - variant DCE 1.1 (binary 10x) in the high bits of byte 8. * * The version byte is byte 6 in the "wire" uuid_t layout and byte 7 in * the byte-swapped guid_t layout. */static void uuid_test_uuid_gen(struct kunit *test){	uuid_t u; 	for (unsigned int i = 0; i < 8; i++) {		uuid_gen(&u);		KUNIT_EXPECT_EQ(test, u.b[6] & 0xf0, 0x40);		KUNIT_EXPECT_EQ(test, u.b[8] & 0xc0, 0x80);	}} static void uuid_test_guid_gen(struct kunit *test){	guid_t g; 	for (unsigned int i = 0; i < 8; i++) {		guid_gen(&g);		KUNIT_EXPECT_EQ(test, g.b[7] & 0xf0, 0x40);		KUNIT_EXPECT_EQ(test, g.b[8] & 0xc0, 0x80);	}} static void uuid_test_generate_random_uuid(struct kunit *test){	unsigned char buf[16]; 	for (unsigned int i = 0; i < 8; i++) {		generate_random_uuid(buf);		KUNIT_EXPECT_EQ(test, buf[6] & 0xf0, 0x40);		KUNIT_EXPECT_EQ(test, buf[8] & 0xc0, 0x80);	}} static void uuid_test_generate_random_guid(struct kunit *test){	unsigned char buf[16]; 	for (unsigned int i = 0; i < 8; i++) {		generate_random_guid(buf);		KUNIT_EXPECT_EQ(test, buf[7] & 0xf0, 0x40);		KUNIT_EXPECT_EQ(test, buf[8] & 0xc0, 0x80);	}} static struct kunit_case uuid_test_cases[] = {	KUNIT_CASE(uuid_test_guid_valid),	KUNIT_CASE(uuid_test_uuid_valid),	KUNIT_CASE(uuid_test_guid_invalid),	KUNIT_CASE(uuid_test_uuid_invalid),	KUNIT_CASE(uuid_test_uuid_gen),	KUNIT_CASE(uuid_test_guid_gen),	KUNIT_CASE(uuid_test_generate_random_uuid),	KUNIT_CASE(uuid_test_generate_random_guid),	{},}; static struct kunit_suite uuid_test_suite = {	.name = "uuid",	.test_cases = uuid_test_cases,}; kunit_test_suite(uuid_test_suite); MODULE_AUTHOR("Andy Shevchenko <andriy.shevchenko@linux.intel.com>");MODULE_DESCRIPTION("Test cases for lib/uuid.c module");MODULE_LICENSE("Dual BSD/GPL");