1 /** @file 2 Implements NULL authenticated variable services. 3 4 Copyright (c) 2015, Intel Corporation. All rights reserved.<BR> 5 This program and the accompanying materials 6 are licensed and made available under the terms and conditions of the BSD License 7 which accompanies this distribution. The full text of the license may be found at 8 http://opensource.org/licenses/bsd-license.php 9 10 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, 11 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. 12 13 **/ 14 15 #include <Library/AuthVariableLib.h> 16 #include <Library/DebugLib.h> 17 18 /** 19 Initialization for authenticated varibale services. 20 If this initialization returns error status, other APIs will not work 21 and expect to be not called then. 22 23 @param[in] AuthVarLibContextIn Pointer to input auth variable lib context. 24 @param[out] AuthVarLibContextOut Pointer to output auth variable lib context. 25 26 @retval EFI_SUCCESS Function successfully executed. 27 @retval EFI_INVALID_PARAMETER If AuthVarLibContextIn == NULL or AuthVarLibContextOut == NULL. 28 @retval EFI_OUT_OF_RESOURCES Fail to allocate enough resource. 29 @retval EFI_UNSUPPORTED Unsupported to process authenticated variable. 30 31 **/ 32 EFI_STATUS 33 EFIAPI 34 AuthVariableLibInitialize ( 35 IN AUTH_VAR_LIB_CONTEXT_IN *AuthVarLibContextIn, 36 OUT AUTH_VAR_LIB_CONTEXT_OUT *AuthVarLibContextOut 37 ) 38 { 39 // 40 // Do nothing, just return EFI_UNSUPPORTED. 41 // 42 return EFI_UNSUPPORTED; 43 } 44 45 /** 46 Process variable with EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS/EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS set. 47 48 @param[in] VariableName Name of the variable. 49 @param[in] VendorGuid Variable vendor GUID. 50 @param[in] Data Data pointer. 51 @param[in] DataSize Size of Data. 52 @param[in] Attributes Attribute value of the variable. 53 54 @retval EFI_SUCCESS The firmware has successfully stored the variable and its data as 55 defined by the Attributes. 56 @retval EFI_INVALID_PARAMETER Invalid parameter. 57 @retval EFI_WRITE_PROTECTED Variable is write-protected. 58 @retval EFI_OUT_OF_RESOURCES There is not enough resource. 59 @retval EFI_SECURITY_VIOLATION The variable is with EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS 60 or EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACESS 61 set, but the AuthInfo does NOT pass the validation 62 check carried out by the firmware. 63 @retval EFI_UNSUPPORTED Unsupported to process authenticated variable. 64 65 **/ 66 EFI_STATUS 67 EFIAPI 68 AuthVariableLibProcessVariable ( 69 IN CHAR16 *VariableName, 70 IN EFI_GUID *VendorGuid, 71 IN VOID *Data, 72 IN UINTN DataSize, 73 IN UINT32 Attributes 74 ) 75 { 76 ASSERT (FALSE); 77 return EFI_UNSUPPORTED; 78 } 79
