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 12 struct test_uuid_data { 13 const char *uuid; 14 guid_t le; 15 uuid_t be; 16 }; 17 18 static 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 36 static 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 42 static unsigned total_tests __initdata; 43 static unsigned failed_tests __initdata; 44 45 static 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 62 static 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 91 static 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 } 106 107 static 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 } 124 module_init(test_uuid_init); 125 126 static void __exit test_uuid_exit(void) 127 { 128 /* do nothing */ 129 } 130 module_exit(test_uuid_exit); 131 132 MODULE_AUTHOR("Andy Shevchenko <andriy.shevchenko@linux.intel.com>"); 133 MODULE_LICENSE("Dual BSD/GPL"); 134