OvmfPkg/VirtioFsDxe/SimpleFsGetPosition.c

   1 /** @file
   2   EFI_FILE_PROTOCOL.GetPosition() member function for the Virtio Filesystem
   3   driver.
   4
   5   Copyright (C) 2020, Red Hat, Inc.
   6
   7   SPDX-License-Identifier: BSD-2-Clause-Patent
   8 **/
   9
  10 #include "VirtioFsDxe.h"
  11
  12 EFI_STATUS
  13 EFIAPI
  14 VirtioFsSimpleFileGetPosition (
  15   IN     EFI_FILE_PROTOCOL  *This,
  16   OUT UINT64                *Position
  17   )
  18 {
  19   VIRTIO_FS_FILE  *VirtioFsFile;
  20
  21   VirtioFsFile = VIRTIO_FS_FILE_FROM_SIMPLE_FILE (This);
  22   if (VirtioFsFile->IsDirectory) {
  23     return EFI_UNSUPPORTED;
  24   }
  25
  26   *Position = VirtioFsFile->FilePosition;
  27   return EFI_SUCCESS;
  28 }