///\r
BOOLEAN mEnableLocking = TRUE;\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
+GLOBAL_VARIABLE_ENTRY mGlobalVariableList[] = {\r
+ {EFI_LANG_CODES_VARIABLE_NAME, VARIABLE_ATTRIBUTE_BS_RT},\r
+ {EFI_LANG_VARIABLE_NAME, VARIABLE_ATTRIBUTE_NV_BS_RT},\r
+ {EFI_TIME_OUT_VARIABLE_NAME, VARIABLE_ATTRIBUTE_NV_BS_RT},\r
+ {EFI_PLATFORM_LANG_CODES_VARIABLE_NAME, VARIABLE_ATTRIBUTE_BS_RT},\r
+ {EFI_PLATFORM_LANG_VARIABLE_NAME, VARIABLE_ATTRIBUTE_NV_BS_RT},\r
+ {EFI_CON_IN_VARIABLE_NAME, VARIABLE_ATTRIBUTE_NV_BS_RT},\r
+ {EFI_CON_OUT_VARIABLE_NAME, VARIABLE_ATTRIBUTE_NV_BS_RT},\r
+ {EFI_ERR_OUT_VARIABLE_NAME, VARIABLE_ATTRIBUTE_NV_BS_RT},\r
+ {EFI_CON_IN_DEV_VARIABLE_NAME, VARIABLE_ATTRIBUTE_BS_RT},\r
+ {EFI_CON_OUT_DEV_VARIABLE_NAME, VARIABLE_ATTRIBUTE_BS_RT},\r
+ {EFI_ERR_OUT_DEV_VARIABLE_NAME, VARIABLE_ATTRIBUTE_BS_RT},\r
+ {EFI_BOOT_ORDER_VARIABLE_NAME, VARIABLE_ATTRIBUTE_NV_BS_RT},\r
+ {EFI_BOOT_NEXT_VARIABLE_NAME, VARIABLE_ATTRIBUTE_NV_BS_RT},\r
+ {EFI_BOOT_CURRENT_VARIABLE_NAME, VARIABLE_ATTRIBUTE_BS_RT},\r
+ {EFI_BOOT_OPTION_SUPPORT_VARIABLE_NAME, VARIABLE_ATTRIBUTE_BS_RT},\r
+ {EFI_DRIVER_ORDER_VARIABLE_NAME, VARIABLE_ATTRIBUTE_NV_BS_RT},\r
+ {EFI_HW_ERR_REC_SUPPORT_VARIABLE_NAME, VARIABLE_ATTRIBUTE_NV_BS_RT},\r
+ {EFI_SETUP_MODE_NAME, VARIABLE_ATTRIBUTE_BS_RT},\r
+ {EFI_KEY_EXCHANGE_KEY_NAME, VARIABLE_ATTRIBUTE_NV_BS_RT_AT},\r
+ {EFI_PLATFORM_KEY_NAME, VARIABLE_ATTRIBUTE_NV_BS_RT_AT},\r
+ {EFI_SIGNATURE_SUPPORT_NAME, VARIABLE_ATTRIBUTE_BS_RT},\r
+ {EFI_SECURE_BOOT_MODE_NAME, VARIABLE_ATTRIBUTE_BS_RT},\r
+ {EFI_KEK_DEFAULT_VARIABLE_NAME, VARIABLE_ATTRIBUTE_BS_RT},\r
+ {EFI_PK_DEFAULT_VARIABLE_NAME, VARIABLE_ATTRIBUTE_BS_RT},\r
+ {EFI_DB_DEFAULT_VARIABLE_NAME, VARIABLE_ATTRIBUTE_BS_RT},\r
+ {EFI_DBX_DEFAULT_VARIABLE_NAME, VARIABLE_ATTRIBUTE_BS_RT},\r
+ {EFI_DBT_DEFAULT_VARIABLE_NAME, VARIABLE_ATTRIBUTE_BS_RT},\r
+ {EFI_OS_INDICATIONS_SUPPORT_VARIABLE_NAME, VARIABLE_ATTRIBUTE_BS_RT},\r
+ {EFI_OS_INDICATIONS_VARIABLE_NAME, VARIABLE_ATTRIBUTE_NV_BS_RT},\r
+ {EFI_VENDOR_KEYS_VARIABLE_NAME, VARIABLE_ATTRIBUTE_BS_RT},\r
+};\r
+GLOBAL_VARIABLE_ENTRY mGlobalVariableList2[] = {\r
+ {L"Boot####", VARIABLE_ATTRIBUTE_NV_BS_RT},\r
+ {L"Driver####", VARIABLE_ATTRIBUTE_NV_BS_RT},\r
+ {L"Key####", VARIABLE_ATTRIBUTE_NV_BS_RT},\r
+};\r
\r
/**\r
Routine used to track statistical information about variable usage.\r
\r
SetLanguageCodes = FALSE;\r
\r
- if (StrCmp (VariableName, L"PlatformLangCodes") == 0) {\r
+ if (StrCmp (VariableName, EFI_PLATFORM_LANG_CODES_VARIABLE_NAME) == 0) {\r
//\r
// PlatformLangCodes is a volatile variable, so it can not be updated at runtime.\r
//\r
mVariableModuleGlobal->PlatformLang = AllocateRuntimePool (DataSize);\r
ASSERT (mVariableModuleGlobal->PlatformLang != NULL);\r
\r
- } else if (StrCmp (VariableName, L"LangCodes") == 0) {\r
+ } else if (StrCmp (VariableName, EFI_LANG_CODES_VARIABLE_NAME) == 0) {\r
//\r
// LangCodes is a volatile variable, so it can not be updated at runtime.\r
//\r
// Update Lang if PlatformLang is already set\r
// Update PlatformLang if Lang is already set\r
//\r
- Status = FindVariable (L"PlatformLang", &gEfiGlobalVariableGuid, &Variable, &mVariableModuleGlobal->VariableGlobal, FALSE);\r
+ Status = FindVariable (EFI_PLATFORM_LANG_VARIABLE_NAME, &gEfiGlobalVariableGuid, &Variable, &mVariableModuleGlobal->VariableGlobal, FALSE);\r
if (!EFI_ERROR (Status)) {\r
//\r
// Update Lang\r
//\r
- VariableName = L"PlatformLang";\r
+ VariableName = EFI_PLATFORM_LANG_VARIABLE_NAME;\r
Data = GetVariableDataPtr (Variable.CurrPtr);\r
DataSize = Variable.CurrPtr->DataSize;\r
} else {\r
- Status = FindVariable (L"Lang", &gEfiGlobalVariableGuid, &Variable, &mVariableModuleGlobal->VariableGlobal, FALSE);\r
+ Status = FindVariable (EFI_LANG_VARIABLE_NAME, &gEfiGlobalVariableGuid, &Variable, &mVariableModuleGlobal->VariableGlobal, FALSE);\r
if (!EFI_ERROR (Status)) {\r
//\r
// Update PlatformLang\r
//\r
- VariableName = L"Lang";\r
+ VariableName = EFI_LANG_VARIABLE_NAME;\r
Data = GetVariableDataPtr (Variable.CurrPtr);\r
DataSize = Variable.CurrPtr->DataSize;\r
} else {\r
//\r
Attributes = EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS;\r
\r
- if (StrCmp (VariableName, L"PlatformLang") == 0) {\r
+ if (StrCmp (VariableName, EFI_PLATFORM_LANG_VARIABLE_NAME) == 0) {\r
//\r
// Update Lang when PlatformLangCodes/LangCodes were set.\r
//\r
//\r
// Successfully convert PlatformLang to Lang, and set the BestLang value into Lang variable simultaneously.\r
//\r
- FindVariable (L"Lang", &gEfiGlobalVariableGuid, &Variable, &mVariableModuleGlobal->VariableGlobal, FALSE);\r
+ FindVariable (EFI_LANG_VARIABLE_NAME, &gEfiGlobalVariableGuid, &Variable, &mVariableModuleGlobal->VariableGlobal, FALSE);\r
\r
- Status = UpdateVariable (L"Lang", &gEfiGlobalVariableGuid, BestLang,\r
+ Status = UpdateVariable (EFI_LANG_VARIABLE_NAME, &gEfiGlobalVariableGuid, BestLang,\r
ISO_639_2_ENTRY_SIZE + 1, Attributes, 0, 0, &Variable, NULL);\r
\r
DEBUG ((EFI_D_INFO, "Variable Driver Auto Update PlatformLang, PlatformLang:%a, Lang:%a\n", BestPlatformLang, BestLang));\r
}\r
}\r
\r
- } else if (StrCmp (VariableName, L"Lang") == 0) {\r
+ } else if (StrCmp (VariableName, EFI_LANG_VARIABLE_NAME) == 0) {\r
//\r
// Update PlatformLang when PlatformLangCodes/LangCodes were set.\r
//\r
//\r
// Successfully convert Lang to PlatformLang, and set the BestPlatformLang value into PlatformLang variable simultaneously.\r
//\r
- FindVariable (L"PlatformLang", &gEfiGlobalVariableGuid, &Variable, &mVariableModuleGlobal->VariableGlobal, FALSE);\r
+ FindVariable (EFI_PLATFORM_LANG_VARIABLE_NAME, &gEfiGlobalVariableGuid, &Variable, &mVariableModuleGlobal->VariableGlobal, FALSE);\r
\r
- Status = UpdateVariable (L"PlatformLang", &gEfiGlobalVariableGuid, BestPlatformLang,\r
+ Status = UpdateVariable (EFI_PLATFORM_LANG_VARIABLE_NAME, &gEfiGlobalVariableGuid, BestPlatformLang,\r
AsciiStrSize (BestPlatformLang), Attributes, 0, 0, &Variable, NULL);\r
\r
DEBUG ((EFI_D_INFO, "Variable Driver Auto Update Lang, Lang:%a, PlatformLang:%a\n", BestLang, BestPlatformLang));\r
return TRUE;\r
}\r
\r
+/**\r
+ This code checks if variable guid is global variable guid first.\r
+ If yes, further check if variable name is in mGlobalVariableList or mGlobalVariableList2 and attributes matched.\r
+\r
+ @param[in] VariableName Pointer to variable name.\r
+ @param[in] VendorGuid Variable Vendor Guid.\r
+ @param[in] Attributes Attributes of the variable.\r
+\r
+ @retval EFI_SUCCESS Variable is not global variable, or Variable is global variable, variable name is in the lists and attributes matched.\r
+ @retval EFI_INVALID_PARAMETER Variable is global variable, but variable name is not in the lists or attributes unmatched.\r
+\r
+**/\r
+EFI_STATUS\r
+EFIAPI\r
+CheckEfiGlobalVariable (\r
+ IN CHAR16 *VariableName,\r
+ IN EFI_GUID *VendorGuid,\r
+ IN UINT32 Attributes\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
+ (Attributes == 0 || (Attributes & (~EFI_VARIABLE_APPEND_WRITE)) == mGlobalVariableList[Index].Attributes)) {\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 ((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
+ (Attributes == 0 || (Attributes & (~EFI_VARIABLE_APPEND_WRITE)) == mGlobalVariableList2[Index].Attributes)) {\r
+ return EFI_SUCCESS;\r
+ }\r
+ }\r
+\r
+ DEBUG ((EFI_D_INFO, "[Variable]: set global variable with invalid variable name or attributes - %g:%s:%x\n", VendorGuid, VariableName, Attributes));\r
+ return EFI_INVALID_PARAMETER;\r
+ }\r
+\r
+ return EFI_SUCCESS;\r
+}\r
+\r
/**\r
Mark a variable that will become read-only after leaving the DXE phase of execution.\r
\r
}\r
}\r
\r
+ Status = CheckEfiGlobalVariable (VariableName, VendorGuid, Attributes);\r
+ if (EFI_ERROR (Status)) {\r
+ return Status;\r
+ }\r
+\r
AcquireLockOnlyAtBootTime(&mVariableModuleGlobal->VariableGlobal.VariableServicesLock);\r
\r
//\r
projects / mirror_edk2.git / blobdiff