LXR linux/lib/test

   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