| Message ID | 20240719-b4-dynamic-uuid-v5-11-8a83de3fe3dc@linaro.org |
|---|---|
| State | Superseded |
| Headers | show |
| Series | efi: CapsuleUpdate: support for dynamic UUIDs | expand |
Hi Caleb, On Fri, 19 Jul 2024 at 06:43, Caleb Connolly <caleb.connolly@linaro.org> wrote: > > Add a test to check the version/variant bits of v4 and v5 UUIDs. > > Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org> > --- > test/lib/uuid.c | 36 ++++++++++++++++++++++++++++++++++++ > 1 file changed, 36 insertions(+) > > diff --git a/test/lib/uuid.c b/test/lib/uuid.c > index 2c6cfd42ddc3..63d36e120623 100644 > --- a/test/lib/uuid.c > +++ b/test/lib/uuid.c > @@ -43,8 +43,44 @@ static int lib_test_uuid_to_le(struct unit_test_state *uts) > } > > LIB_TEST(lib_test_uuid_to_le, 0); > > +/* Test UUID attribute bits (version, variant) */ > +static int lib_test_uuid_bits(struct unit_test_state *uts) > +{ > + unsigned char uuid[16]; > + efi_guid_t guid; > + int i; > + > + /* > + * Reduce the chance of a randomly generated UUID disguising > + * a regression by testing multiple times. > + */ > + for (i = 0; i < 5; i++) { > + /* Test UUID v4 */ > + gen_rand_uuid((unsigned char *)&uuid); > + > + printf("v4 UUID: %pUb\n", (efi_guid_t *)uuid); > + > + ut_assert((uuid[6] & 0xf0) == 0x40); /* version 4 */ ut_asserteq(0x40, uuid[6] & 0xf0); /* version 4 */ save below > + ut_assert((uuid[8] & UUID_VARIANT_MASK) == (UUID_VARIANT << UUID_VARIANT_SHIFT)); /* variant 1 */ check line length > + > + /* Test v5, use the v4 UUID as the namespace */ > + gen_v5_guid((struct uuid *)uuid, > + &guid, "test", 4, NULL); > + > + printf("v5 GUID: %pUl\n", (efi_guid_t *)uuid); > + > + /* This is a GUID so bits 6 and 7 are swapped (little endian) */ > + ut_assert((guid.b[7] & 0xf0) == 0x50); /* version 5 */ > + ut_assert((guid.b[8] & UUID_VARIANT_MASK) == (UUID_VARIANT << UUID_VARIANT_SHIFT)); /* variant 1 */ > + } > + > + return 0; > +} > + > +LIB_TEST(lib_test_uuid_bits, 0); > + > struct dynamic_uuid_test_data { > const char *compatible; > const u16 *images[4]; > const char *expected_uuids[4]; > > -- > 2.45.2 > Regards, Simon
diff --git a/test/lib/uuid.c b/test/lib/uuid.c index 2c6cfd42ddc3..63d36e120623 100644 --- a/test/lib/uuid.c +++ b/test/lib/uuid.c @@ -43,8 +43,44 @@ static int lib_test_uuid_to_le(struct unit_test_state *uts) } LIB_TEST(lib_test_uuid_to_le, 0); +/* Test UUID attribute bits (version, variant) */ +static int lib_test_uuid_bits(struct unit_test_state *uts) +{ + unsigned char uuid[16]; + efi_guid_t guid; + int i; + + /* + * Reduce the chance of a randomly generated UUID disguising + * a regression by testing multiple times. + */ + for (i = 0; i < 5; i++) { + /* Test UUID v4 */ + gen_rand_uuid((unsigned char *)&uuid); + + printf("v4 UUID: %pUb\n", (efi_guid_t *)uuid); + + ut_assert((uuid[6] & 0xf0) == 0x40); /* version 4 */ + ut_assert((uuid[8] & UUID_VARIANT_MASK) == (UUID_VARIANT << UUID_VARIANT_SHIFT)); /* variant 1 */ + + /* Test v5, use the v4 UUID as the namespace */ + gen_v5_guid((struct uuid *)uuid, + &guid, "test", 4, NULL); + + printf("v5 GUID: %pUl\n", (efi_guid_t *)uuid); + + /* This is a GUID so bits 6 and 7 are swapped (little endian) */ + ut_assert((guid.b[7] & 0xf0) == 0x50); /* version 5 */ + ut_assert((guid.b[8] & UUID_VARIANT_MASK) == (UUID_VARIANT << UUID_VARIANT_SHIFT)); /* variant 1 */ + } + + return 0; +} + +LIB_TEST(lib_test_uuid_bits, 0); + struct dynamic_uuid_test_data { const char *compatible; const u16 *images[4]; const char *expected_uuids[4];
Add a test to check the version/variant bits of v4 and v5 UUIDs. Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org> --- test/lib/uuid.c | 36 ++++++++++++++++++++++++++++++++++++ 1 file changed, 36 insertions(+)