OvmfPkg/VirtioFsDxe/SimpleFsFlush.c

   1 /** @file
   2   EFI_FILE_PROTOCOL.Flush() member function for the Virtio Filesystem driver.
   3
   4   Copyright (C) 2020, Red Hat, Inc.
   5
   6   SPDX-License-Identifier: BSD-2-Clause-Patent
   7 **/
   8
   9 #include "VirtioFsDxe.h"
  10
  11 EFI_STATUS
  12 EFIAPI
  13 VirtioFsSimpleFileFlush (
  14   IN EFI_FILE_PROTOCOL  *This
  15   )
  16 {
  17   VIRTIO_FS_FILE  *VirtioFsFile;
  18   VIRTIO_FS       *VirtioFs;
  19   EFI_STATUS      Status;
  20
  21   VirtioFsFile = VIRTIO_FS_FILE_FROM_SIMPLE_FILE (This);
  22   VirtioFs     = VirtioFsFile->OwnerFs;
  23
  24   if (!VirtioFsFile->IsOpenForWriting) {
  25     return EFI_ACCESS_DENIED;
  26   }
  27
  28   //
  29   // FUSE_FLUSH is for regular files only.
  30   //
  31   if (!VirtioFsFile->IsDirectory) {
  32     Status = VirtioFsFuseFlush (
  33                VirtioFs,
  34                VirtioFsFile->NodeId,
  35                VirtioFsFile->FuseHandle
  36                );
  37     if (EFI_ERROR (Status)) {
  38       return Status;
  39     }
  40   }
  41
  42   Status = VirtioFsFuseFsyncFileOrDir (
  43              VirtioFs,
  44              VirtioFsFile->NodeId,
  45              VirtioFsFile->FuseHandle,
  46              VirtioFsFile->IsDirectory
  47              );
  48   return Status;
  49 }