Update partition driver to not produce BlockIo if a GPT with OS-specific field (BIT1) set in its partition attributes.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@9293 6f19259b-4bc3-4df7-8a09-765794883524

1 files changed, 13 insertions, 2 deletions

diff --git a/MdeModulePkg/Universal/Disk/PartitionDxe/Gpt.c b/MdeModulePkg/Universal/Disk/PartitionDxe/Gpt.c
index 7bcfe69747..68d5830fcb 100644
--- a/MdeModulePkg/Universal/Disk/PartitionDxe/Gpt.c
+++ b/MdeModulePkg/Universal/Disk/PartitionDxe/Gpt.c
@@ -339,10 +339,12 @@ PartitionInstallGptChildHandles (
   for (Index = 0; Index < PrimaryHeader->NumberOfPartitionEntries; Index++) {

     if (CompareGuid (&PartEntry[Index].PartitionTypeGUID, &gEfiPartTypeUnusedGuid) ||

         PEntryStatus[Index].OutOfRange ||

-        PEntryStatus[Index].Overlap

+        PEntryStatus[Index].Overlap ||

+        PEntryStatus[Index].OsSpecific

         ) {

       //

-      // Don't use null EFI Partition Entries or Invalid Partition Entries

+      // Don't use null EFI Partition Entries, Invalid Partition Entries or OS specific

+      // partition Entries

       //

       continue;

     }

@@ -652,6 +654,7 @@ PartitionCheckGptEntry (
   EFI_LBA EndingLBA;

   UINTN   Index1;

   UINTN   Index2;

+  UINT64  Attributes;

 

   DEBUG ((EFI_D_INFO, " start check partition entries\n"));

   for (Index1 = 0; Index1 < PartHeader->NumberOfPartitionEntries; Index1++) {

@@ -687,6 +690,14 @@ PartitionCheckGptEntry (
 

       }

     }

+

+    Attributes = PartEntry[Index1].Attributes;

+    if ((Attributes & BIT1) != 0) {

+      //

+      // If Bit 1 is set, this indicate that this is an OS specific GUID partition. 

+      //

+      PEntryStatus[Index1].OsSpecific = TRUE;

+    }

   }

 

   DEBUG ((EFI_D_INFO, " End check partition entries\n"));