SecurityPkg: Use IsZeroGuid API for zero GUID checking

Instead of comparing a GUID with gZeroGuid via the CompareGuid API, the
commit uses the IsZeroGuid API to check if the given GUID is a zero GUID.

Cc: Chao Zhang <chao.b.zhang@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Hao Wu <hao.a.wu@intel.com>
Reviewed-by: Chao Zhang <chao.b.zhang@intel.com>
diff --git a/SecurityPkg/Library/DxeTpm2MeasureBootLib/DxeTpm2MeasureBootLib.c b/SecurityPkg/Library/DxeTpm2MeasureBootLib/DxeTpm2MeasureBootLib.c
index 1f2574e..aacafa8 100644
--- a/SecurityPkg/Library/DxeTpm2MeasureBootLib/DxeTpm2MeasureBootLib.c
+++ b/SecurityPkg/Library/DxeTpm2MeasureBootLib/DxeTpm2MeasureBootLib.c
@@ -15,7 +15,7 @@
   Tcg2MeasureGptTable() function will receive untrusted GPT partition table, and parse

   partition data carefully.

 

-Copyright (c) 2013 - 2015, Intel Corporation. All rights reserved.<BR>

+Copyright (c) 2013 - 2016, Intel Corporation. All rights reserved.<BR>

 (C) Copyright 2015 Hewlett Packard Enterprise Development LP<BR>

 This program and the accompanying materials 

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

@@ -36,7 +36,6 @@
 #include <Protocol/FirmwareVolumeBlock.h>

 

 #include <Guid/MeasuredFvHob.h>

-#include <Guid/ZeroGuid.h>

 

 #include <Library/BaseLib.h>

 #include <Library/DebugLib.h>

@@ -202,7 +201,7 @@
   PartitionEntry    = (EFI_PARTITION_ENTRY *)EntryPtr;

   NumberOfPartition = 0;

   for (Index = 0; Index < PrimaryHeader->NumberOfPartitionEntries; Index++) {

-    if (!CompareGuid (&PartitionEntry->PartitionTypeGUID, &gZeroGuid)) {

+    if (!IsZeroGuid (&PartitionEntry->PartitionTypeGUID)) {

       NumberOfPartition++;  

     }

     PartitionEntry = (EFI_PARTITION_ENTRY *)((UINT8 *)PartitionEntry + PrimaryHeader->SizeOfPartitionEntry);

@@ -238,7 +237,7 @@
   PartitionEntry    = (EFI_PARTITION_ENTRY*)EntryPtr;

   NumberOfPartition = 0;

   for (Index = 0; Index < PrimaryHeader->NumberOfPartitionEntries; Index++) {

-    if (!CompareGuid (&PartitionEntry->PartitionTypeGUID, &gZeroGuid)) {

+    if (!IsZeroGuid (&PartitionEntry->PartitionTypeGUID)) {

       CopyMem (

         (UINT8 *)&GptData->Partitions + NumberOfPartition * PrimaryHeader->SizeOfPartitionEntry,

         (UINT8 *)PartitionEntry,

diff --git a/SecurityPkg/Library/DxeTpm2MeasureBootLib/DxeTpm2MeasureBootLib.inf b/SecurityPkg/Library/DxeTpm2MeasureBootLib/DxeTpm2MeasureBootLib.inf
index 1296c97..a11988e 100644
--- a/SecurityPkg/Library/DxeTpm2MeasureBootLib/DxeTpm2MeasureBootLib.inf
+++ b/SecurityPkg/Library/DxeTpm2MeasureBootLib/DxeTpm2MeasureBootLib.inf
@@ -9,7 +9,7 @@
 #  This external input must be validated carefully to avoid security issues such 

 #  as buffer overflow or integer overflow.

 #

-# Copyright (c) 2013 - 2015, Intel Corporation. All rights reserved.<BR>

+# Copyright (c) 2013 - 2016, 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

@@ -58,7 +58,6 @@
 

 [Guids]

   gMeasuredFvHobGuid                    ## SOMETIMES_CONSUMES ## HOB

-  gZeroGuid                             ## SOMETIMES_CONSUMES ## GUID

 

 [Protocols]

   gEfiTcg2ProtocolGuid                  ## SOMETIMES_CONSUMES

diff --git a/SecurityPkg/Library/DxeTpmMeasureBootLib/DxeTpmMeasureBootLib.c b/SecurityPkg/Library/DxeTpmMeasureBootLib/DxeTpmMeasureBootLib.c
index 8ab60d8..52bf582 100644
--- a/SecurityPkg/Library/DxeTpmMeasureBootLib/DxeTpmMeasureBootLib.c
+++ b/SecurityPkg/Library/DxeTpmMeasureBootLib/DxeTpmMeasureBootLib.c
@@ -34,7 +34,6 @@
 #include <Protocol/FirmwareVolumeBlock.h>

 

 #include <Guid/MeasuredFvHob.h>

-#include <Guid/ZeroGuid.h>

 

 #include <Library/BaseLib.h>

 #include <Library/DebugLib.h>

@@ -202,7 +201,7 @@
   PartitionEntry    = (EFI_PARTITION_ENTRY *)EntryPtr;

   NumberOfPartition = 0;

   for (Index = 0; Index < PrimaryHeader->NumberOfPartitionEntries; Index++) {

-    if (!CompareGuid (&PartitionEntry->PartitionTypeGUID, &gZeroGuid)) {

+    if (!IsZeroGuid (&PartitionEntry->PartitionTypeGUID)) {

       NumberOfPartition++;  

     }

     PartitionEntry = (EFI_PARTITION_ENTRY *)((UINT8 *)PartitionEntry + PrimaryHeader->SizeOfPartitionEntry);

@@ -236,7 +235,7 @@
   PartitionEntry    = (EFI_PARTITION_ENTRY*)EntryPtr;

   NumberOfPartition = 0;

   for (Index = 0; Index < PrimaryHeader->NumberOfPartitionEntries; Index++) {

-    if (!CompareGuid (&PartitionEntry->PartitionTypeGUID, &gZeroGuid)) {

+    if (!IsZeroGuid (&PartitionEntry->PartitionTypeGUID)) {

       CopyMem (

         (UINT8 *)&GptData->Partitions + NumberOfPartition * PrimaryHeader->SizeOfPartitionEntry,

         (UINT8 *)PartitionEntry,

diff --git a/SecurityPkg/Library/DxeTpmMeasureBootLib/DxeTpmMeasureBootLib.inf b/SecurityPkg/Library/DxeTpmMeasureBootLib/DxeTpmMeasureBootLib.inf
index 0d58eec..553e683 100644
--- a/SecurityPkg/Library/DxeTpmMeasureBootLib/DxeTpmMeasureBootLib.inf
+++ b/SecurityPkg/Library/DxeTpmMeasureBootLib/DxeTpmMeasureBootLib.inf
@@ -9,7 +9,7 @@
 #  This external input must be validated carefully to avoid security issues such 

 #  as buffer overflow or integer overflow.

 #

-# Copyright (c) 2009 - 2015, Intel Corporation. All rights reserved.<BR>

+# Copyright (c) 2009 - 2016, 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

@@ -58,7 +58,6 @@
 

 [Guids]

   gMeasuredFvHobGuid                    ## SOMETIMES_CONSUMES ## HOB

-  gZeroGuid                             ## SOMETIMES_CONSUMES ## GUID

 

 [Protocols]

   gEfiTcgProtocolGuid                   ## SOMETIMES_CONSUMES