/*
* Test cases for lib/uuid.c module.
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/string.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 unsigned total_tests __initdata;
static unsigned failed_tests __initdata;
static void __init test_uuid_failed(const char *prefix, bool wrong, bool be,
const char *data, const char *actual)
{
pr_err("%s test #%u %s %s data: '%s'\n" ,
prefix,
total_tests,
wrong ? "passed on wrong" : "failed on" ,
be ? "BE" : "LE" ,
data);
if (actual && *actual)
pr_err("%s test #%u actual data: '%s'\n" ,
prefix,
total_tests,
actual);
failed_tests++;
}
static void __init test_uuid_test(const struct test_uuid_data *data)
{
guid_t le;
uuid_t be;
char buf[48];
/* LE */
total_tests++;
if (guid_parse(data->uuid, &le))
test_uuid_failed("conversion" , false , false , data->uuid, NULL);
total_tests++;
if (!guid_equal(&data->le, &le)) {
sprintf(buf, "%pUl" , &le);
test_uuid_failed("cmp" , false , false , data->uuid, buf);
}
/* BE */
total_tests++;
if (uuid_parse(data->uuid, &be))
test_uuid_failed("conversion" , false , true , data->uuid, NULL);
total_tests++;
if (!uuid_equal(&data->be, &be)) {
sprintf(buf, "%pUb" , &be);
test_uuid_failed("cmp" , false , true , data->uuid, buf);
}
}
static void __init test_uuid_wrong(const char *data)
{
guid_t le;
uuid_t be;
/* LE */
total_tests++;
if (!guid_parse(data, &le))
test_uuid_failed("negative" , true , false , data, NULL);
/* BE */
total_tests++;
if (!uuid_parse(data, &be))
test_uuid_failed("negative" , true , true , data, NULL);
}
static int __init test_uuid_init(void )
{
unsigned int i;
for (i = 0; i < ARRAY_SIZE(test_uuid_test_data); i++)
test_uuid_test(&test_uuid_test_data[i]);
for (i = 0; i < ARRAY_SIZE(test_uuid_wrong_data); i++)
test_uuid_wrong(test_uuid_wrong_data[i]);
if (failed_tests == 0)
pr_info("all %u tests passed\n" , total_tests);
else
pr_err("failed %u out of %u tests\n" , failed_tests, total_tests);
return failed_tests ? -EINVAL : 0;
}
module_init(test_uuid_init);
static void __exit test_uuid_exit(void )
{
/* do nothing */
}
module_exit(test_uuid_exit);
MODULE_AUTHOR("Andy Shevchenko <andriy.shevchenko@linux.intel.com>" );
MODULE_DESCRIPTION("Test cases for lib/uuid.c module" );
MODULE_LICENSE("Dual BSD/GPL" );
Messung V0.5 in Prozent C=94 H=94 G=93
¤ Dauer der Verarbeitung: 0.10 Sekunden
(vorverarbeitet am 2026-04-25)
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