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https://github.com/torvalds/linux
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cfaff0e515
It appears that somehow I missed a test of the latest UUID rework which landed in the kernel. Present a small test module to avoid such cases in the future. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
133 lines
3.4 KiB
C
133 lines
3.4 KiB
C
/*
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* Test cases for lib/uuid.c module.
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*/
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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#include <linux/init.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/string.h>
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#include <linux/uuid.h>
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struct test_uuid_data {
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const char *uuid;
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uuid_le le;
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uuid_be be;
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};
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static const struct test_uuid_data test_uuid_test_data[] = {
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{
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.uuid = "c33f4995-3701-450e-9fbf-206a2e98e576",
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.le = UUID_LE(0xc33f4995, 0x3701, 0x450e, 0x9f, 0xbf, 0x20, 0x6a, 0x2e, 0x98, 0xe5, 0x76),
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.be = UUID_BE(0xc33f4995, 0x3701, 0x450e, 0x9f, 0xbf, 0x20, 0x6a, 0x2e, 0x98, 0xe5, 0x76),
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},
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{
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.uuid = "64b4371c-77c1-48f9-8221-29f054fc023b",
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.le = UUID_LE(0x64b4371c, 0x77c1, 0x48f9, 0x82, 0x21, 0x29, 0xf0, 0x54, 0xfc, 0x02, 0x3b),
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.be = UUID_BE(0x64b4371c, 0x77c1, 0x48f9, 0x82, 0x21, 0x29, 0xf0, 0x54, 0xfc, 0x02, 0x3b),
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},
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{
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.uuid = "0cb4ddff-a545-4401-9d06-688af53e7f84",
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.le = UUID_LE(0x0cb4ddff, 0xa545, 0x4401, 0x9d, 0x06, 0x68, 0x8a, 0xf5, 0x3e, 0x7f, 0x84),
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.be = UUID_BE(0x0cb4ddff, 0xa545, 0x4401, 0x9d, 0x06, 0x68, 0x8a, 0xf5, 0x3e, 0x7f, 0x84),
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},
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};
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static const char * const test_uuid_wrong_data[] = {
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"c33f4995-3701-450e-9fbf206a2e98e576 ", /* no hyphen(s) */
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"64b4371c-77c1-48f9-8221-29f054XX023b", /* invalid character(s) */
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"0cb4ddff-a545-4401-9d06-688af53e", /* not enough data */
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};
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static unsigned total_tests __initdata;
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static unsigned failed_tests __initdata;
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static void __init test_uuid_failed(const char *prefix, bool wrong, bool be,
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const char *data, const char *actual)
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{
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pr_err("%s test #%u %s %s data: '%s'\n",
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prefix,
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total_tests,
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wrong ? "passed on wrong" : "failed on",
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be ? "BE" : "LE",
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data);
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if (actual && *actual)
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pr_err("%s test #%u actual data: '%s'\n",
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prefix,
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total_tests,
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actual);
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failed_tests++;
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}
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static void __init test_uuid_test(const struct test_uuid_data *data)
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{
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uuid_le le;
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uuid_be be;
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char buf[48];
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/* LE */
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total_tests++;
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if (uuid_le_to_bin(data->uuid, &le))
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test_uuid_failed("conversion", false, false, data->uuid, NULL);
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total_tests++;
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if (uuid_le_cmp(data->le, le)) {
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sprintf(buf, "%pUl", &le);
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test_uuid_failed("cmp", false, false, data->uuid, buf);
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}
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/* BE */
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total_tests++;
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if (uuid_be_to_bin(data->uuid, &be))
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test_uuid_failed("conversion", false, true, data->uuid, NULL);
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total_tests++;
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if (uuid_be_cmp(data->be, be)) {
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sprintf(buf, "%pUb", &be);
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test_uuid_failed("cmp", false, true, data->uuid, buf);
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}
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}
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static void __init test_uuid_wrong(const char *data)
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{
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uuid_le le;
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uuid_be be;
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/* LE */
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total_tests++;
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if (!uuid_le_to_bin(data, &le))
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test_uuid_failed("negative", true, false, data, NULL);
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/* BE */
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total_tests++;
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if (!uuid_be_to_bin(data, &be))
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test_uuid_failed("negative", true, true, data, NULL);
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}
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static int __init test_uuid_init(void)
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{
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unsigned int i;
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for (i = 0; i < ARRAY_SIZE(test_uuid_test_data); i++)
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test_uuid_test(&test_uuid_test_data[i]);
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for (i = 0; i < ARRAY_SIZE(test_uuid_wrong_data); i++)
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test_uuid_wrong(test_uuid_wrong_data[i]);
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if (failed_tests == 0)
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pr_info("all %u tests passed\n", total_tests);
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else
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pr_err("failed %u out of %u tests\n", failed_tests, total_tests);
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return failed_tests ? -EINVAL : 0;
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}
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module_init(test_uuid_init);
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static void __exit test_uuid_exit(void)
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{
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/* do nothing */
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}
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module_exit(test_uuid_exit);
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MODULE_AUTHOR("Andy Shevchenko <andriy.shevchenko@linux.intel.com>");
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MODULE_LICENSE("Dual BSD/GPL");
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