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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2026-08-19 10:09:22 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2026-08-19 10:09:22 -0700 |
| commit | f4cdf7ca9a1fdcca413157df19753f388a5a224e (patch) | |
| tree | 60a31895b2446cd7fa27514e8c2843534a0de0da /lib/tests/uuid_kunit.c | |
| download | linux-stable-f4cdf7ca9a1fdcca413157df19753f388a5a224e.tar.gz linux-stable-f4cdf7ca9a1fdcca413157df19753f388a5a224e.zip | |
Merge tag 'media/v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-mediagrafted
Pull media updates from Mauro Carvalho Chehab:
- v4l2-core: added ISP statistics support and per-block validation
- v4l2-core: Allow unknown HDR10 white point and luminance
- New camera sensors: Sony IMX678 and IMX471m, Himax HM1092 IR sensor
- New codec: Milos: VPU v2.0 codec support
- isp driver: gained support for Dreamchip RPPX1 ISP framework
- vsp1 driver: gained support for RZ/T2H and RZ/N2H
- Novalake driver: gained CVS support for new NVL hardware
- dvb-core: fix feed leak on failed DMX_ADD_PID
- several driver fixes, cleanups and minor improvements
* tag 'media/v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (308 commits)
media: ipu-bridge: check all DMI entries when overriding sensor rotation
media: v4l2-async: avoid deleting unlinked ASC entry on link error
media: rzg2l-cru: Align bytesperline to hardware DMA stride requirement
media: intel/ipu6: fix async notifier cleanup leak on parse error
media: staging/ipu7: fix async notifier UAF on probe error path
media: amd: isp4: fix self-deadlock in isp4sd_pwron_and_init() error path
media: amd: isp4: release partial allocations in isp4if_alloc_fw_gpumem()
media: rcar-isp: Fix VSPX reference leaks
media: rcar-isp: Release ISPCORE resources
media: i2c: imx415: Release runtime PM reference on VBLANK error
media: i2c: imx415: Return test pattern write errors
media: renesas: vsp1: Declare index variables in for loop statement
media: renesas: vsp1: Make reset control optional to support platforms without a reset line
media: dt-bindings: media: renesas,vsp1: Document RZ/T2H and RZ/N2H SoCs
media: dt-bindings: media: renesas,fcp: Document RZ/T2H and RZ/N2H SoCs
media: nxp: imx8-isi: Add additional 32-bit RGB format support
media: nxp: imx8-isi: Add 16-bit raw Bayer format support
media: nxp: imx8-isi: Implement per-stream reference counting for multiplexed streams
media: nxp: imx8-isi: Use BIT_ULL() for 64-bit stream masks
media: nxp: imx8-isi: Correct color map between V4L2 and ISI
...
Diffstat (limited to 'lib/tests/uuid_kunit.c')
| -rw-r--r-- | lib/tests/uuid_kunit.c | 162 |
1 files changed, 162 insertions, 0 deletions
diff --git a/lib/tests/uuid_kunit.c b/lib/tests/uuid_kunit.c new file mode 100644 index 000000000..2ef64fbe6 --- /dev/null +++ b/lib/tests/uuid_kunit.c @@ -0,0 +1,162 @@ +// 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"); |
