Enable write file to USB from Shell in Win7 OS

Signed-off-by: ydong10
Reviewed-by: niruiyu

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@13013 6f19259b-4bc3-4df7-8a09-765794883524

1 files changed, 16 insertions, 1 deletions

diff --git a/Nt32Pkg/WinNtBlockIoDxe/WinNtBlockIo.c b/Nt32Pkg/WinNtBlockIoDxe/WinNtBlockIo.c
index e43e6cfef5..1e12dd5204 100644
--- a/Nt32Pkg/WinNtBlockIoDxe/WinNtBlockIo.c
+++ b/Nt32Pkg/WinNtBlockIoDxe/WinNtBlockIo.c
@@ -1,6 +1,6 @@
 /**@file

 

-Copyright (c) 2006 - 2007, Intel Corporation. All rights reserved.<BR>

+Copyright (c) 2006 - 2012, 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

@@ -972,8 +972,10 @@ WinNtBlockIoWriteBlocks (
   WIN_NT_BLOCK_IO_PRIVATE *Private;

   UINTN                   BytesWritten;

   BOOL                    Flag;

+  BOOL                    Locked;

   EFI_STATUS              Status;

   EFI_TPL                 OldTpl;

+  UINTN                   BytesReturned;

 

   OldTpl = gBS->RaiseTPL (TPL_CALLBACK);

 

@@ -984,7 +986,20 @@ WinNtBlockIoWriteBlocks (
     goto Done;

   }

 

+  //

+  // According the Windows requirement, first need to lock the volume before 

+  // write to it.

+  //

+  Locked = Private->WinNtThunk->DeviceIoControl (Private->NtHandle, FSCTL_LOCK_VOLUME, NULL, 0, NULL, 0, &BytesReturned, NULL);

+  if (Locked == 0) {

+    DEBUG ((EFI_D_INIT, "ReadBlocks: Lock volume failed. (%d)\n", Private->WinNtThunk->GetLastError ()));

+    Status = WinNtBlockIoError (Private);

+    goto Done;

+  }

   Flag = Private->WinNtThunk->WriteFile (Private->NtHandle, Buffer, (DWORD) BufferSize, (LPDWORD) &BytesWritten, NULL);

+  if (Locked != 0) {

+    Private->WinNtThunk->DeviceIoControl (Private->NtHandle, FSCTL_UNLOCK_VOLUME, NULL, 0, NULL, 0, &BytesReturned, NULL);

+  }

   if (!Flag || (BytesWritten != BufferSize)) {

     DEBUG ((EFI_D_INIT, "ReadBlocks: WriteFile failed. (%d)\n", Private->WinNtThunk->GetLastError ()));

     Status = WinNtBlockIoError (Private);