If setting variable in Runtime and there has been a same GUID and name variable existed in system without RT attribute, return EFI_WRITE_PROTECTED.

Signed-off-by: lzeng14
Reviewed-by: tye

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@13156 6f19259b-4bc3-4df7-8a09-765794883524

1 files changed, 11 insertions, 9 deletions

diff --git a/SecurityPkg/VariableAuthenticated/RuntimeDxe/Variable.c b/SecurityPkg/VariableAuthenticated/RuntimeDxe/Variable.c
index 22ded16819..4c88eb6ff6 100644
--- a/SecurityPkg/VariableAuthenticated/RuntimeDxe/Variable.c
+++ b/SecurityPkg/VariableAuthenticated/RuntimeDxe/Variable.c
@@ -720,7 +720,8 @@ Reclaim (
 

   @param[in]       VariableName        Name of the variable to be found

   @param[in]       VendorGuid          Vendor GUID to be found.

-  @param[in]       IgnoreRtAttribute   Ignore RUNTIME_ACCESS attribute when searching variable.

+  @param[in]       IgnoreRtCheck       Ignore EFI_VARIABLE_RUNTIME_ACCESS attribute

+                                       check at runtime when searching variable.

   @param[in, out]  PtrTrack            Variable Track Pointer structure that contains Variable Information.

 

   @retval          EFI_SUCCESS         Variable found successfully

@@ -730,7 +731,7 @@ EFI_STATUS
 FindVariableEx (

   IN     CHAR16                  *VariableName,

   IN     EFI_GUID                *VendorGuid,

-  IN     BOOLEAN                 IgnoreRtAttribute,

+  IN     BOOLEAN                 IgnoreRtCheck,

   IN OUT VARIABLE_POINTER_TRACK  *PtrTrack

   )

 {

@@ -749,7 +750,7 @@ FindVariableEx (
     if (PtrTrack->CurrPtr->State == VAR_ADDED ||

         PtrTrack->CurrPtr->State == (VAR_IN_DELETED_TRANSITION & VAR_ADDED)

        ) {

-      if (IgnoreRtAttribute || !AtRuntime () || ((PtrTrack->CurrPtr->Attributes & EFI_VARIABLE_RUNTIME_ACCESS) != 0)) {

+      if (IgnoreRtCheck || !AtRuntime () || ((PtrTrack->CurrPtr->Attributes & EFI_VARIABLE_RUNTIME_ACCESS) != 0)) {

         if (VariableName[0] == 0) {

           if (PtrTrack->CurrPtr->State == (VAR_IN_DELETED_TRANSITION & VAR_ADDED)) {

             InDeletedVariable   = PtrTrack->CurrPtr;

@@ -785,9 +786,9 @@ FindVariableEx (
   This code finds variable in storage blocks of volatile and non-volatile storage areas.

   If VariableName is an empty string, then we just return the first

   qualified variable without comparing VariableName and VendorGuid.

-  If IgnoreRtAttribute is TRUE, then we ignore the EFI_VARIABLE_RUNTIME_ACCESS Attribute

-  when searching existing variable, only VariableName and VendorGuid are compared.

-  Otherwise, variables with EFI_VARIABLE_RUNTIME_ACCESS are not visible at runtime.

+  If IgnoreRtCheck is TRUE, then we ignore the EFI_VARIABLE_RUNTIME_ACCESS attribute check

+  at runtime when searching existing variable, only VariableName and VendorGuid are compared.

+  Otherwise, variables without EFI_VARIABLE_RUNTIME_ACCESS are not visible at runtime.

 

   @param[in]   VariableName           Name of the variable to be found.

   @param[in]   VendorGuid             Vendor GUID to be found.

@@ -796,7 +797,8 @@ FindVariableEx (
   @param[in]   Global                 Pointer to VARIABLE_GLOBAL structure, including

                                       base of volatile variable storage area, base of

                                       NV variable storage area, and a lock.

-  @param[in]   IgnoreRtAttribute      Ignore RUNTIME_ACCESS attribute when searching variable.

+  @param[in]   IgnoreRtCheck          Ignore EFI_VARIABLE_RUNTIME_ACCESS attribute

+                                      check at runtime when searching variable.

 

   @retval EFI_INVALID_PARAMETER       If VariableName is not an empty string, while

                                       VendorGuid is NULL.

@@ -810,7 +812,7 @@ FindVariable (
   IN  EFI_GUID                *VendorGuid,

   OUT VARIABLE_POINTER_TRACK  *PtrTrack,

   IN  VARIABLE_GLOBAL         *Global,

-  IN  BOOLEAN                 IgnoreRtAttribute

+  IN  BOOLEAN                 IgnoreRtCheck

   )

 {

   EFI_STATUS              Status;

@@ -842,7 +844,7 @@ FindVariable (
     PtrTrack->EndPtr   = GetEndPointer   (VariableStoreHeader[Type]);

     PtrTrack->Volatile = (BOOLEAN) (Type == VariableStoreTypeVolatile);

 

-    Status = FindVariableEx (VariableName, VendorGuid, IgnoreRtAttribute, PtrTrack);

+    Status = FindVariableEx (VariableName, VendorGuid, IgnoreRtCheck, PtrTrack);

     if (!EFI_ERROR (Status)) {

       return Status;

     }