- @param[in] VariablePropery Pointer to variable property.\r
- @param[in] DataSize Data size.\r
- @param[in] Data Pointer to data buffer.\r
-\r
- @retval EFI_SUCCESS The SetVariable check result was success.\r
- @retval EFI_INVALID_PARAMETER The data buffer is not a Null-terminated ASCII string.\r
-\r
-**/\r
-EFI_STATUS\r
-EFIAPI\r
-InternalVarCheckAsciiString (\r
- IN VAR_CHECK_VARIABLE_PROPERTY *VariablePropery,\r
- IN UINTN DataSize,\r
- IN VOID *Data\r
- )\r
-{\r
- CHAR8 *String;\r
- UINTN Index;\r
-\r
- String = (CHAR8 *) Data;\r
- if (String[DataSize - 1] == '\0') {\r
- return EFI_SUCCESS;\r
- } else {\r
- for (Index = 1; Index < DataSize && (String[DataSize - 1 - Index] != '\0'); Index++);\r
- if (Index == DataSize) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
- }\r
- return EFI_SUCCESS;\r
-}\r
-\r
-/**\r
- Internal check for size array.\r
-\r
- @param[in] VariablePropery Pointer to variable property.\r
- @param[in] DataSize Data size.\r
- @param[in] Data Pointer to data buffer.\r
-\r
- @retval EFI_SUCCESS The SetVariable check result was success.\r
- @retval EFI_INVALID_PARAMETER The DataSize is not size array.\r
-\r
-**/\r
-EFI_STATUS\r
-EFIAPI\r
-InternalVarCheckSizeArray (\r
- IN VAR_CHECK_VARIABLE_PROPERTY *VariablePropery,\r
- IN UINTN DataSize,\r
- IN VOID *Data\r
- )\r
-{\r
- if ((DataSize % VariablePropery->MinSize) != 0) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
- return EFI_SUCCESS;\r
-}\r
-\r
-//\r
-// To prevent name collisions with possible future globally defined variables,\r
-// other internal firmware data variables that are not defined here must be\r
-// saved with a unique VendorGuid other than EFI_GLOBAL_VARIABLE or\r
-// any other GUID defined by the UEFI Specification. Implementations must\r
-// only permit the creation of variables with a UEFI Specification-defined\r
-// VendorGuid when these variables are documented in the UEFI Specification.\r
-//\r
-UEFI_DEFINED_VARIABLE_ENTRY mGlobalVariableList[] = {\r
- {\r
- EFI_LANG_CODES_VARIABLE_NAME,\r
- {\r
- VAR_CHECK_VARIABLE_PROPERTY_REVISION,\r
- 0,\r
- VARIABLE_ATTRIBUTE_BS_RT,\r
- 1,\r
- MAX_UINTN\r
- },\r
- InternalVarCheckAsciiString\r
- },\r
- {\r
- EFI_LANG_VARIABLE_NAME,\r
- {\r
- VAR_CHECK_VARIABLE_PROPERTY_REVISION,\r
- 0,\r
- VARIABLE_ATTRIBUTE_NV_BS_RT,\r
- 1,\r
- MAX_UINTN\r
- },\r
- InternalVarCheckAsciiString\r
- },\r
- {\r
- EFI_TIME_OUT_VARIABLE_NAME,\r
- {\r
- VAR_CHECK_VARIABLE_PROPERTY_REVISION,\r
- 0,\r
- VARIABLE_ATTRIBUTE_NV_BS_RT,\r
- sizeof (UINT16),\r
- sizeof (UINT16)\r
- },\r
- NULL\r
- },\r
- {\r
- EFI_PLATFORM_LANG_CODES_VARIABLE_NAME,\r
- {\r
- VAR_CHECK_VARIABLE_PROPERTY_REVISION,\r
- 0,\r
- VARIABLE_ATTRIBUTE_BS_RT,\r
- 1,\r
- MAX_UINTN\r
- },\r
- InternalVarCheckAsciiString\r
- },\r
- {\r
- EFI_PLATFORM_LANG_VARIABLE_NAME,\r
- {\r
- VAR_CHECK_VARIABLE_PROPERTY_REVISION,\r
- 0,\r
- VARIABLE_ATTRIBUTE_NV_BS_RT,\r
- 1,\r
- MAX_UINTN\r
- },\r
- InternalVarCheckAsciiString\r
- },\r
- {\r
- EFI_CON_IN_VARIABLE_NAME,\r
- {\r
- VAR_CHECK_VARIABLE_PROPERTY_REVISION,\r
- 0,\r
- VARIABLE_ATTRIBUTE_NV_BS_RT,\r
- sizeof (EFI_DEVICE_PATH_PROTOCOL),\r
- MAX_UINTN\r
- },\r
- InternalVarCheckDevicePath\r
- },\r
- {\r
- EFI_CON_OUT_VARIABLE_NAME,\r
- {\r
- VAR_CHECK_VARIABLE_PROPERTY_REVISION,\r
- 0,\r
- VARIABLE_ATTRIBUTE_NV_BS_RT,\r
- sizeof (EFI_DEVICE_PATH_PROTOCOL),\r
- MAX_UINTN\r
- },\r
- InternalVarCheckDevicePath\r
- },\r
- {\r
- EFI_ERR_OUT_VARIABLE_NAME,\r
- {\r
- VAR_CHECK_VARIABLE_PROPERTY_REVISION,\r
- 0,\r
- VARIABLE_ATTRIBUTE_NV_BS_RT,\r
- sizeof (EFI_DEVICE_PATH_PROTOCOL),\r
- MAX_UINTN\r
- },\r
- InternalVarCheckDevicePath\r
- },\r
- {\r
- EFI_CON_IN_DEV_VARIABLE_NAME,\r
- {\r
- VAR_CHECK_VARIABLE_PROPERTY_REVISION,\r
- 0,\r
- VARIABLE_ATTRIBUTE_BS_RT,\r
- sizeof (EFI_DEVICE_PATH_PROTOCOL),\r
- MAX_UINTN\r
- },\r
- InternalVarCheckDevicePath\r
- },\r
- {\r
- EFI_CON_OUT_DEV_VARIABLE_NAME,\r
- {\r
- VAR_CHECK_VARIABLE_PROPERTY_REVISION,\r
- 0,\r
- VARIABLE_ATTRIBUTE_BS_RT,\r
- sizeof (EFI_DEVICE_PATH_PROTOCOL),\r
- MAX_UINTN\r
- },\r
- InternalVarCheckDevicePath\r
- },\r
- {\r
- EFI_ERR_OUT_DEV_VARIABLE_NAME,\r
- {\r
- VAR_CHECK_VARIABLE_PROPERTY_REVISION,\r
- 0,\r
- VARIABLE_ATTRIBUTE_BS_RT,\r
- sizeof (EFI_DEVICE_PATH_PROTOCOL),\r
- MAX_UINTN\r
- },\r
- InternalVarCheckDevicePath\r
- },\r
- {\r
- EFI_BOOT_ORDER_VARIABLE_NAME,\r
- {\r
- VAR_CHECK_VARIABLE_PROPERTY_REVISION,\r
- 0,\r
- VARIABLE_ATTRIBUTE_NV_BS_RT,\r
- sizeof (UINT16),\r
- MAX_UINTN\r
- },\r
- InternalVarCheckSizeArray\r
- },\r
- {\r
- EFI_BOOT_NEXT_VARIABLE_NAME,\r
- {\r
- VAR_CHECK_VARIABLE_PROPERTY_REVISION,\r
- 0,\r
- VARIABLE_ATTRIBUTE_NV_BS_RT,\r
- sizeof (UINT16),\r
- sizeof (UINT16)\r
- },\r
- NULL\r
- },\r
- {\r
- EFI_BOOT_CURRENT_VARIABLE_NAME,\r
- {\r
- VAR_CHECK_VARIABLE_PROPERTY_REVISION,\r
- 0,\r
- VARIABLE_ATTRIBUTE_BS_RT,\r
- sizeof (UINT16),\r
- sizeof (UINT16)\r
- },\r
- NULL\r
- },\r
- {\r
- EFI_BOOT_OPTION_SUPPORT_VARIABLE_NAME,\r
- {\r
- VAR_CHECK_VARIABLE_PROPERTY_REVISION,\r
- 0,\r
- VARIABLE_ATTRIBUTE_BS_RT,\r
- sizeof (UINT32),\r
- sizeof (UINT32)\r
- },\r
- NULL\r
- },\r
- {\r
- EFI_DRIVER_ORDER_VARIABLE_NAME,\r
- {\r
- VAR_CHECK_VARIABLE_PROPERTY_REVISION,\r
- 0,\r
- VARIABLE_ATTRIBUTE_NV_BS_RT,\r
- sizeof (UINT16),\r
- MAX_UINTN\r
- },\r
- InternalVarCheckSizeArray\r
- },\r
- {\r
- EFI_SYS_PREP_ORDER_VARIABLE_NAME,\r
- {\r
- VAR_CHECK_VARIABLE_PROPERTY_REVISION,\r
- 0,\r
- VARIABLE_ATTRIBUTE_NV_BS_RT,\r
- sizeof (UINT16),\r
- MAX_UINTN\r
- },\r
- InternalVarCheckSizeArray\r
- },\r
- {\r
- EFI_HW_ERR_REC_SUPPORT_VARIABLE_NAME,\r
- {\r
- VAR_CHECK_VARIABLE_PROPERTY_REVISION,\r
- 0,\r
- VARIABLE_ATTRIBUTE_NV_BS_RT,\r
- sizeof (UINT16),\r
- sizeof (UINT16)\r
- },\r
- NULL\r
- },\r
- {\r
- EFI_SETUP_MODE_NAME,\r
- {\r
- VAR_CHECK_VARIABLE_PROPERTY_REVISION,\r
- VAR_CHECK_VARIABLE_PROPERTY_READ_ONLY,\r
- VARIABLE_ATTRIBUTE_BS_RT,\r
- sizeof (UINT8),\r
- sizeof (UINT8)\r
- },\r
- NULL\r
- },\r
- {\r
- EFI_KEY_EXCHANGE_KEY_NAME,\r
- {\r
- VAR_CHECK_VARIABLE_PROPERTY_REVISION,\r
- 0,\r
- VARIABLE_ATTRIBUTE_NV_BS_RT_AT,\r
- 1,\r
- MAX_UINTN\r
- },\r
- NULL\r
- },\r
- {\r
- EFI_PLATFORM_KEY_NAME,\r
- {\r
- VAR_CHECK_VARIABLE_PROPERTY_REVISION,\r
- 0,\r
- VARIABLE_ATTRIBUTE_NV_BS_RT_AT,\r
- 1,\r
- MAX_UINTN\r
- },\r
- NULL\r
- },\r
- {\r
- EFI_SIGNATURE_SUPPORT_NAME,\r
- {\r
- VAR_CHECK_VARIABLE_PROPERTY_REVISION,\r
- VAR_CHECK_VARIABLE_PROPERTY_READ_ONLY,\r
- VARIABLE_ATTRIBUTE_BS_RT,\r
- sizeof (EFI_GUID),\r
- MAX_UINTN\r
- },\r
- InternalVarCheckSizeArray\r
- },\r
- {\r
- EFI_SECURE_BOOT_MODE_NAME,\r
- {\r
- VAR_CHECK_VARIABLE_PROPERTY_REVISION,\r
- VAR_CHECK_VARIABLE_PROPERTY_READ_ONLY,\r
- VARIABLE_ATTRIBUTE_BS_RT,\r
- sizeof (UINT8),\r
- sizeof (UINT8)\r
- },\r
- NULL\r
- },\r
- {\r
- EFI_KEK_DEFAULT_VARIABLE_NAME,\r
- {\r
- VAR_CHECK_VARIABLE_PROPERTY_REVISION,\r
- VAR_CHECK_VARIABLE_PROPERTY_READ_ONLY,\r
- VARIABLE_ATTRIBUTE_BS_RT,\r
- 1,\r
- MAX_UINTN\r
- },\r
- NULL\r
- },\r
- {\r
- EFI_PK_DEFAULT_VARIABLE_NAME,\r
- {\r
- VAR_CHECK_VARIABLE_PROPERTY_REVISION,\r
- VAR_CHECK_VARIABLE_PROPERTY_READ_ONLY,\r
- VARIABLE_ATTRIBUTE_BS_RT,\r
- 1,\r
- MAX_UINTN\r
- },\r
- NULL\r
- },\r
- {\r
- EFI_DB_DEFAULT_VARIABLE_NAME,\r
- {\r
- VAR_CHECK_VARIABLE_PROPERTY_REVISION,\r
- VAR_CHECK_VARIABLE_PROPERTY_READ_ONLY,\r
- VARIABLE_ATTRIBUTE_BS_RT,\r
- 1,\r
- MAX_UINTN\r
- },\r
- NULL\r
- },\r
- {\r
- EFI_DBX_DEFAULT_VARIABLE_NAME,\r
- {\r
- VAR_CHECK_VARIABLE_PROPERTY_REVISION,\r
- VAR_CHECK_VARIABLE_PROPERTY_READ_ONLY,\r
- VARIABLE_ATTRIBUTE_BS_RT,\r
- 1,\r
- MAX_UINTN\r
- },\r
- NULL\r
- },\r
- {\r
- EFI_DBT_DEFAULT_VARIABLE_NAME,\r
- {\r
- VAR_CHECK_VARIABLE_PROPERTY_REVISION,\r
- VAR_CHECK_VARIABLE_PROPERTY_READ_ONLY,\r
- VARIABLE_ATTRIBUTE_BS_RT,\r
- 1,\r
- MAX_UINTN\r
- },\r
- NULL\r
- },\r
- {\r
- EFI_OS_INDICATIONS_SUPPORT_VARIABLE_NAME,\r
- {\r
- VAR_CHECK_VARIABLE_PROPERTY_REVISION,\r
- 0,\r
- VARIABLE_ATTRIBUTE_BS_RT,\r
- sizeof (UINT64),\r
- sizeof (UINT64)\r
- },\r
- NULL\r
- },\r
- {\r
- EFI_OS_INDICATIONS_VARIABLE_NAME,\r
- {\r
- VAR_CHECK_VARIABLE_PROPERTY_REVISION,\r
- 0,\r
- VARIABLE_ATTRIBUTE_NV_BS_RT,\r
- sizeof (UINT64),\r
- sizeof (UINT64)\r
- },\r
- NULL\r
- },\r
- {\r
- EFI_VENDOR_KEYS_VARIABLE_NAME,\r
- {\r
- VAR_CHECK_VARIABLE_PROPERTY_REVISION,\r
- VAR_CHECK_VARIABLE_PROPERTY_READ_ONLY,\r
- VARIABLE_ATTRIBUTE_BS_RT,\r
- sizeof (UINT8),\r
- sizeof (UINT8)\r
- },\r
- NULL\r
- },\r
-};\r
-UEFI_DEFINED_VARIABLE_ENTRY mGlobalVariableList2[] = {\r
- {\r
- L"Boot####",\r
- {\r
- VAR_CHECK_VARIABLE_PROPERTY_REVISION,\r
- 0,\r
- VARIABLE_ATTRIBUTE_NV_BS_RT,\r
- sizeof (UINT32) + sizeof (UINT16),\r
- MAX_UINTN\r
- },\r
- InternalVarCheckLoadOption\r
- },\r
- {\r
- L"Driver####",\r
- {\r
- VAR_CHECK_VARIABLE_PROPERTY_REVISION,\r
- 0,\r
- VARIABLE_ATTRIBUTE_NV_BS_RT,\r
- sizeof (UINT32) + sizeof (UINT16),\r
- MAX_UINTN\r
- },\r
- InternalVarCheckLoadOption\r
- },\r
- {\r
- L"SysPrep####",\r
- {\r
- VAR_CHECK_VARIABLE_PROPERTY_REVISION,\r
- 0,\r
- VARIABLE_ATTRIBUTE_NV_BS_RT,\r
- sizeof (UINT32) + sizeof (UINT16),\r
- MAX_UINTN\r
- },\r
- InternalVarCheckLoadOption\r
- },\r
- {\r
- L"Key####",\r
- {\r
- VAR_CHECK_VARIABLE_PROPERTY_REVISION,\r
- 0,\r
- VARIABLE_ATTRIBUTE_NV_BS_RT,\r
- sizeof (EFI_KEY_OPTION),\r
- sizeof (EFI_KEY_OPTION) + 3 * sizeof (EFI_INPUT_KEY)\r
- },\r
- InternalVarCheckKeyOption\r
- },\r
-};\r
-\r
-//\r
-// EFI_IMAGE_SECURITY_DATABASE_GUID\r
-//\r
-UEFI_DEFINED_VARIABLE_ENTRY mImageSecurityVariableList[] = {\r
- {\r
- EFI_IMAGE_SECURITY_DATABASE,\r
- {\r
- VAR_CHECK_VARIABLE_PROPERTY_REVISION,\r
- 0,\r
- VARIABLE_ATTRIBUTE_NV_BS_RT_AT,\r
- 1,\r
- MAX_UINTN\r
- },\r
- NULL\r
- },\r
- {\r
- EFI_IMAGE_SECURITY_DATABASE1,\r
- {\r
- VAR_CHECK_VARIABLE_PROPERTY_REVISION,\r
- 0,\r
- VARIABLE_ATTRIBUTE_NV_BS_RT_AT,\r
- 1,\r
- MAX_UINTN\r
- },\r
- NULL\r
- },\r
- {\r
- EFI_IMAGE_SECURITY_DATABASE2,\r
- {\r
- VAR_CHECK_VARIABLE_PROPERTY_REVISION,\r
- 0,\r
- VARIABLE_ATTRIBUTE_NV_BS_RT_AT,\r
- 1,\r
- MAX_UINTN\r
- },\r
- NULL\r
- },\r
-};\r
-\r
-/**\r
- Get UEFI defined global variable or image security database variable property.\r
- The code will check if variable guid is global variable or image security database guid first.\r
- If yes, further check if variable name is in mGlobalVariableList, mGlobalVariableList2 or mImageSecurityVariableList.\r
-\r
- @param[in] VariableName Pointer to variable name.\r
- @param[in] VendorGuid Variable Vendor Guid.\r
- @param[in] WildcardMatch Try wildcard match or not.\r
- @param[out] VariableProperty Pointer to variable property.\r
- @param[out] VarCheckFunction Pointer to check function.\r
-\r
- @retval EFI_SUCCESS Variable is not global variable or image security database variable.\r
- @retval EFI_INVALID_PARAMETER Variable is global variable or image security database variable, but variable name is not in the lists.\r
-\r
-**/\r
-EFI_STATUS\r
-GetUefiDefinedVariableProperty (\r
- IN CHAR16 *VariableName,\r
- IN EFI_GUID *VendorGuid,\r
- IN BOOLEAN WildcardMatch,\r
- OUT VAR_CHECK_VARIABLE_PROPERTY **VariableProperty,\r
- OUT INTERNAL_VAR_CHECK_FUNCTION *VarCheckFunction OPTIONAL\r
- )\r
-{\r
- UINTN Index;\r
- UINTN NameLength;\r
-\r
- if (CompareGuid (VendorGuid, &gEfiGlobalVariableGuid)) {\r
- //\r
- // Try list 1, exactly match.\r
- //\r
- for (Index = 0; Index < sizeof (mGlobalVariableList)/sizeof (mGlobalVariableList[0]); Index++) {\r
- if (StrCmp (mGlobalVariableList[Index].Name, VariableName) == 0) {\r
- if (VarCheckFunction != NULL) {\r
- *VarCheckFunction = mGlobalVariableList[Index].CheckFunction;\r
- }\r
- *VariableProperty = &mGlobalVariableList[Index].VariableProperty;\r
- return EFI_SUCCESS;\r
- }\r
- }\r
-\r
- //\r
- // Try list 2.\r
- //\r
- NameLength = StrLen (VariableName) - 4;\r
- for (Index = 0; Index < sizeof (mGlobalVariableList2)/sizeof (mGlobalVariableList2[0]); Index++) {\r
- if (WildcardMatch) {\r
- if ((StrLen (VariableName) == StrLen (mGlobalVariableList2[Index].Name)) &&\r
- (StrnCmp (mGlobalVariableList2[Index].Name, VariableName, NameLength) == 0) &&\r
- IsHexaDecimalDigitCharacter (VariableName[NameLength]) &&\r
- IsHexaDecimalDigitCharacter (VariableName[NameLength + 1]) &&\r
- IsHexaDecimalDigitCharacter (VariableName[NameLength + 2]) &&\r
- IsHexaDecimalDigitCharacter (VariableName[NameLength + 3])) {\r
- if (VarCheckFunction != NULL) {\r
- *VarCheckFunction = mGlobalVariableList2[Index].CheckFunction;\r
- }\r
- *VariableProperty = &mGlobalVariableList2[Index].VariableProperty;\r
- return EFI_SUCCESS;\r
- }\r
- }\r
- if (StrCmp (mGlobalVariableList2[Index].Name, VariableName) == 0) {\r
- if (VarCheckFunction != NULL) {\r
- *VarCheckFunction = mGlobalVariableList2[Index].CheckFunction;\r
- }\r
- *VariableProperty = &mGlobalVariableList2[Index].VariableProperty;\r
- return EFI_SUCCESS;\r
- }\r
- }\r
-\r
- //\r
- // The variable name is not in the lists.\r
- //\r
- return EFI_INVALID_PARAMETER;\r
- }\r
-\r
- if (CompareGuid (VendorGuid, &gEfiImageSecurityDatabaseGuid)) {\r
- for (Index = 0; Index < sizeof (mImageSecurityVariableList)/sizeof (mImageSecurityVariableList[0]); Index++) {\r
- if (StrCmp (mImageSecurityVariableList[Index].Name, VariableName) == 0) {\r
- if (VarCheckFunction != NULL) {\r
- *VarCheckFunction = mImageSecurityVariableList[Index].CheckFunction;\r
- }\r
- *VariableProperty = &mImageSecurityVariableList[Index].VariableProperty;\r
- return EFI_SUCCESS;\r
- }\r
- }\r
-\r
- return EFI_INVALID_PARAMETER;\r
- }\r
-\r
- //\r
- // It is not global variable, image security database variable.\r
- //\r
- return EFI_SUCCESS;\r
-}\r
-\r
-/**\r
- Internal SetVariable check.\r
-\r
- @param[in] VariableName Name of Variable to set.\r
- @param[in] VendorGuid Variable vendor GUID.\r
- @param[in] Attributes Attribute value of the variable.\r
- @param[in] DataSize Size of Data to set.\r
- @param[in] Data Data pointer.\r
-\r
- @retval EFI_SUCCESS The SetVariable check result was success.\r
- @retval EFI_INVALID_PARAMETER An invalid combination of attribute bits, name, and GUID was supplied,\r
- or the DataSize exceeds the minimum or maximum allowed,\r
- or the Data value is not following UEFI spec for UEFI defined variables.\r
- @retval EFI_WRITE_PROTECTED The variable in question is read-only.\r
- @retval Others The return status from check handler.\r