MdeModulePkg/SecurityPkg Variable: Return error status to avoid inconsistency between PlatformLang and Lang.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Star Zeng <star.zeng@intel.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@15340 6f19259b-4bc3-4df7-8a09-765794883524

1 files changed, 25 insertions, 12 deletions

diff --git a/SecurityPkg/VariableAuthenticated/RuntimeDxe/Variable.c b/SecurityPkg/VariableAuthenticated/RuntimeDxe/Variable.c
index 28d026a0a8..71cd460e0c 100644
--- a/SecurityPkg/VariableAuthenticated/RuntimeDxe/Variable.c
+++ b/SecurityPkg/VariableAuthenticated/RuntimeDxe/Variable.c
@@ -16,7 +16,7 @@
   VariableServiceSetVariable() should also check authenticate data to avoid buffer overflow,

   integer overflow. It should also check attribute to avoid authentication bypass.

 

-Copyright (c) 2009 - 2013, Intel Corporation. All rights reserved.<BR>

+Copyright (c) 2009 - 2014, Intel Corporation. All rights reserved.<BR>

 This program and the accompanying materials

 are licensed and made available under the terms and conditions of the BSD License

 which accompanies this distribution.  The full text of the license may be found at

@@ -1522,8 +1522,13 @@ VariableGetBestLanguage (
 

   @param[in] DataSize           Size of data. 0 means delete.

 

+  @retval EFI_SUCCESS           The update operation is successful or ignored.

+  @retval EFI_WRITE_PROTECTED   Update PlatformLangCodes/LangCodes at runtime.

+  @retval EFI_OUT_OF_RESOURCES  No enough variable space to do the update operation.

+  @retval Others                Other errors happened during the update operation.

+

 **/

-VOID

+EFI_STATUS

 AutoUpdateLangVariable (

   IN  CHAR16             *VariableName,

   IN  VOID               *Data,

@@ -1542,7 +1547,7 @@ AutoUpdateLangVariable (
   // Don't do updates for delete operation

   //

   if (DataSize == 0) {

-    return;

+    return EFI_SUCCESS;

   }

 

   SetLanguageCodes = FALSE;

@@ -1552,7 +1557,7 @@ AutoUpdateLangVariable (
     // PlatformLangCodes is a volatile variable, so it can not be updated at runtime.

     //

     if (AtRuntime ()) {

-      return;

+      return EFI_WRITE_PROTECTED;

     }

 

     SetLanguageCodes = TRUE;

@@ -1582,7 +1587,7 @@ AutoUpdateLangVariable (
     // LangCodes is a volatile variable, so it can not be updated at runtime.

     //

     if (AtRuntime ()) {

-      return;

+      return EFI_WRITE_PROTECTED;

     }

 

     SetLanguageCodes = TRUE;

@@ -1626,11 +1631,13 @@ AutoUpdateLangVariable (
         //

         // Neither PlatformLang nor Lang is set, directly return

         //

-        return;

+        return EFI_SUCCESS;

       }

     }

   }

 

+  Status = EFI_SUCCESS;

+

   //

   // According to UEFI spec, "Lang" and "PlatformLang" is NV|BS|RT attributions.

   //

@@ -1664,9 +1671,7 @@ AutoUpdateLangVariable (
         Status = UpdateVariable (EFI_LANG_VARIABLE_NAME, &gEfiGlobalVariableGuid, BestLang,

                                  ISO_639_2_ENTRY_SIZE + 1, Attributes, 0, 0, &Variable, NULL);

 

-        DEBUG ((EFI_D_INFO, "Variable Driver Auto Update PlatformLang, PlatformLang:%a, Lang:%a\n", BestPlatformLang, BestLang));

-

-        ASSERT_EFI_ERROR(Status);

+        DEBUG ((EFI_D_INFO, "Variable Driver Auto Update PlatformLang, PlatformLang:%a, Lang:%a Status: %r\n", BestPlatformLang, BestLang, Status));

       }

     }

 

@@ -1698,11 +1703,12 @@ AutoUpdateLangVariable (
         Status = UpdateVariable (EFI_PLATFORM_LANG_VARIABLE_NAME, &gEfiGlobalVariableGuid, BestPlatformLang,

                                  AsciiStrSize (BestPlatformLang), Attributes, 0, 0, &Variable, NULL);

 

-        DEBUG ((EFI_D_INFO, "Variable Driver Auto Update Lang, Lang:%a, PlatformLang:%a\n", BestLang, BestPlatformLang));

-        ASSERT_EFI_ERROR (Status);

+        DEBUG ((EFI_D_INFO, "Variable Driver Auto Update Lang, Lang:%a, PlatformLang:%a Status: %r\n", BestLang, BestPlatformLang, Status));

       }

     }

   }

+

+  return Status;

 }

 

 /**

@@ -2990,7 +2996,14 @@ VariableServiceSetVariable (
   //

   // Hook the operation of setting PlatformLangCodes/PlatformLang and LangCodes/Lang.

   //

-  AutoUpdateLangVariable (VariableName, Data, DataSize);

+  Status = AutoUpdateLangVariable (VariableName, Data, DataSize);

+  if (EFI_ERROR (Status)) {

+    //

+    // The auto update operation failed, directly return to avoid inconsistency between PlatformLang and Lang.

+    //

+    goto Done;

+  }

+

   //

   // Process PK, KEK, Sigdb seperately.

   //