[PATCH 2/2] efi_selftest: check length report by GetNextVariableName()

[Heinrich Schuchardt]

GetNextVariableName should report the length of the variable including the
final 0x0000 in bytes.

Check this in the unit test.

Signed-off-by: Heinrich Schuchardt <xypron.glpk at gmx.de>
---
 lib/efi_selftest/efi_selftest_variables.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/lib/efi_selftest/efi_selftest_variables.c b/lib/efi_selftest/efi_selftest_variables.c
index 5d98c029b8..b7ead340f5 100644
--- a/lib/efi_selftest/efi_selftest_variables.c
+++ b/lib/efi_selftest/efi_selftest_variables.c
@@ -155,8 +155,14 @@ static int execute(void)
 			return EFI_ST_FAILURE;
 		}
 		if (!memcmp(&guid, &guid_vendor0, sizeof(efi_guid_t)) &&
-		    !efi_st_strcmp_16_8(varname, "efi_st_var0"))
+		    !efi_st_strcmp_16_8(varname, "efi_st_var0")) {
 			flag |= 1;
+			if (len != 24) {
+				efi_st_error("GetNextVariableName report wrong length %u, expected 24\n",
+					     (unsigned int)len);
+				return EFI_ST_FAILURE;
+			}
+		}
 		if (!memcmp(&guid, &guid_vendor1, sizeof(efi_guid_t)) &&
 		    !efi_st_strcmp_16_8(varname, "efi_st_var1"))
 			flag |= 2;
--
2.25.1