DxeTpmMeasureBootLib: Change global variable name to avoid name conflict.

[mirror_edk2.git] / SecurityPkg / Library / DxeTpmMeasureBootLib / DxeTpmMeasureBootLib.c

diff --git a/SecurityPkg/Library/DxeTpmMeasureBootLib/DxeTpmMeasureBootLib.c b/SecurityPkg/Library/DxeTpmMeasureBootLib/DxeTpmMeasureBootLib.c
index eae68eab6babb05d0059f9417e4dfc2249d144f5..25788b854937fc8c3dc0bad92c157c057f7cf873 100644 (file)
--- a/SecurityPkg/Library/DxeTpmMeasureBootLib/DxeTpmMeasureBootLib.c
+++ b/SecurityPkg/Library/DxeTpmMeasureBootLib/DxeTpmMeasureBootLib.c
@@ -15,7 +15,7 @@
   TcgMeasureGptTable() function will receive untrusted GPT partition table, and parse\r
   partition data carefully.\r
 \r
-Copyright (c) 2009 - 2012, Intel Corporation. All rights reserved.<BR>\r
+Copyright (c) 2009 - 2015, Intel Corporation. All rights reserved.<BR>\r
 This program and the accompanying materials \r
 are licensed and made available under the terms and conditions of the BSD License \r
 which accompanies this distribution.  The full text of the license may be found at \r
@@ -31,10 +31,10 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
 #include <Protocol/TcgService.h>\r
 #include <Protocol/BlockIo.h>\r
 #include <Protocol/DiskIo.h>\r
-#include <Protocol/DevicePathToText.h>\r
 #include <Protocol/FirmwareVolumeBlock.h>\r
 \r
 #include <Guid/MeasuredFvHob.h>\r
+#include <Guid/ZeroGuid.h>\r
 \r
 #include <Library/BaseLib.h>\r
 #include <Library/DebugLib.h>\r
@@ -51,10 +51,9 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
 // Flag to check GPT partition. It only need be measured once.\r
 //\r
 BOOLEAN                           mMeasureGptTableFlag = FALSE;\r
-EFI_GUID                          mZeroGuid = {0, 0, 0, {0, 0, 0, 0, 0, 0, 0, 0}};\r
 UINTN                             mMeasureGptCount = 0;\r
 VOID                              *mFileBuffer;\r
-UINTN                             mImageSize;\r
+UINTN                             mTpmImageSize;\r
 //\r
 // Measured FV handle cache\r
 //\r
@@ -96,11 +95,11 @@ DxeTpmMeasureBootLibImageRead (
   }\r
 \r
   EndPosition = FileOffset + *ReadSize;\r
-  if (EndPosition > mImageSize) {\r
-    *ReadSize = (UINT32)(mImageSize - FileOffset);\r
+  if (EndPosition > mTpmImageSize) {\r
+    *ReadSize = (UINT32)(mTpmImageSize - FileOffset);\r
   }\r
 \r
-  if (FileOffset >= mImageSize) {\r
+  if (FileOffset >= mTpmImageSize) {\r
     *ReadSize = 0;\r
   }\r
 \r
@@ -203,7 +202,7 @@ TcgMeasureGptTable (
   PartitionEntry    = (EFI_PARTITION_ENTRY *)EntryPtr;\r
   NumberOfPartition = 0;\r
   for (Index = 0; Index < PrimaryHeader->NumberOfPartitionEntries; Index++) {\r
-    if (!CompareGuid (&PartitionEntry->PartitionTypeGUID, &mZeroGuid)) {\r
+    if (!CompareGuid (&PartitionEntry->PartitionTypeGUID, &gZeroGuid)) {\r
       NumberOfPartition++;  \r
     }\r
     PartitionEntry = (EFI_PARTITION_ENTRY *)((UINT8 *)PartitionEntry + PrimaryHeader->SizeOfPartitionEntry);\r
@@ -237,7 +236,7 @@ TcgMeasureGptTable (
   PartitionEntry    = (EFI_PARTITION_ENTRY*)EntryPtr;\r
   NumberOfPartition = 0;\r
   for (Index = 0; Index < PrimaryHeader->NumberOfPartitionEntries; Index++) {\r
-    if (!CompareGuid (&PartitionEntry->PartitionTypeGUID, &mZeroGuid)) {\r
+    if (!CompareGuid (&PartitionEntry->PartitionTypeGUID, &gZeroGuid)) {\r
       CopyMem (\r
         (UINT8 *)&GptData->Partitions + NumberOfPartition * PrimaryHeader->SizeOfPartitionEntry,\r
         (UINT8 *)PartitionEntry,\r
@@ -372,7 +371,9 @@ TcgMeasurePeImage (
   ImageLoad->ImageLengthInMemory   = ImageSize;\r
   ImageLoad->ImageLinkTimeAddress  = LinkTimeBase;\r
   ImageLoad->LengthOfDevicePath    = FilePathSize;\r
-  CopyMem (ImageLoad->DevicePath, FilePath, FilePathSize);\r
+  if ((FilePath != NULL) && (FilePathSize != 0)) {\r
+    CopyMem (ImageLoad->DevicePath, FilePath, FilePathSize);\r
+  }\r
 \r
   //\r
   // Check PE/COFF image\r
@@ -664,6 +665,14 @@ TcgMeasurePeImage (
              &EventNumber,\r
              &EventLogLastEntry\r
              );\r
+  if (Status == EFI_OUT_OF_RESOURCES) {\r
+    //\r
+    // Out of resource here means the image is hashed and its result is extended to PCR.\r
+    // But the event log cann't be saved since log area is full.\r
+    // Just return EFI_SUCCESS in order not to block the image load.\r
+    //\r
+    Status = EFI_SUCCESS;\r
+  }\r
 \r
 Finish:\r
   FreePool (TcgEvent);\r
@@ -759,7 +768,7 @@ DxeTpmMeasureBootHandler (
              &EventLogLocation,\r
              &EventLogLastEntry\r
            );\r
-  if (EFI_ERROR (Status) || ProtocolCapability.TPMDeactivatedFlag) {\r
+  if (EFI_ERROR (Status) || ProtocolCapability.TPMDeactivatedFlag || (!ProtocolCapability.TPMPresentFlag)) {\r
     //\r
     // TPM device doesn't work or activate.\r
     //\r
@@ -899,7 +908,7 @@ DxeTpmMeasureBootHandler (
     goto Finish;\r
   }\r
 \r
-  mImageSize  = FileSize;\r
+  mTpmImageSize  = FileSize;\r
   mFileBuffer = FileBuffer;\r
 \r
   //\r
@@ -932,21 +941,14 @@ DxeTpmMeasureBootHandler (
     //    \r
     DEBUG_CODE_BEGIN ();\r
       CHAR16                            *ToText;\r
-      EFI_DEVICE_PATH_TO_TEXT_PROTOCOL  *DevPathToText;\r
-      Status = gBS->LocateProtocol (\r
-                      &gEfiDevicePathToTextProtocolGuid,\r
-                      NULL,\r
-                      (VOID **) &DevPathToText\r
-                      );\r
-      if (!EFI_ERROR (Status)) {\r
-        ToText = DevPathToText->ConvertDevicePathToText (\r
-                                  DevicePathNode,\r
-                                  FALSE,\r
-                                  TRUE\r
-                                  );\r
-        if (ToText != NULL) {\r
-          DEBUG ((DEBUG_INFO, "The measured image path is %s.\n", ToText));\r
-        }\r
+      ToText = ConvertDevicePathToText (\r
+                 DevicePathNode,\r
+                 FALSE,\r
+                 TRUE\r
+                 );\r
+      if (ToText != NULL) {\r
+        DEBUG ((DEBUG_INFO, "The measured image path is %s.\n", ToText));\r
+        FreePool (ToText);\r
       }\r
     DEBUG_CODE_END ();\r
 \r