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- /** @file
- EFI_FILE_PROTOCOL.Close() member function for the Virtio Filesystem driver.
- Copyright (C) 2020, Red Hat, Inc.
- SPDX-License-Identifier: BSD-2-Clause-Patent
- **/
- #include <Library/BaseLib.h> // RemoveEntryList()
- #include <Library/MemoryAllocationLib.h> // FreePool()
- #include "VirtioFsDxe.h"
- EFI_STATUS
- EFIAPI
- VirtioFsSimpleFileClose (
- IN EFI_FILE_PROTOCOL *This
- )
- {
- VIRTIO_FS_FILE *VirtioFsFile;
- VIRTIO_FS *VirtioFs;
- VirtioFsFile = VIRTIO_FS_FILE_FROM_SIMPLE_FILE (This);
- VirtioFs = VirtioFsFile->OwnerFs;
- //
- // All actions in this function are "best effort"; the UEFI spec requires
- // EFI_FILE_PROTOCOL.Close() to sync all data to the device, but it also
- // requires EFI_FILE_PROTOCOL.Close() to release resources unconditionally,
- // and to return EFI_SUCCESS unconditionally.
- //
- // Flush, sync, release, and (if needed) forget. If any action fails, we
- // still try the others.
- //
- if (VirtioFsFile->IsOpenForWriting) {
- if (!VirtioFsFile->IsDirectory) {
- VirtioFsFuseFlush (
- VirtioFs,
- VirtioFsFile->NodeId,
- VirtioFsFile->FuseHandle
- );
- }
- VirtioFsFuseFsyncFileOrDir (
- VirtioFs,
- VirtioFsFile->NodeId,
- VirtioFsFile->FuseHandle,
- VirtioFsFile->IsDirectory
- );
- }
- VirtioFsFuseReleaseFileOrDir (
- VirtioFs,
- VirtioFsFile->NodeId,
- VirtioFsFile->FuseHandle,
- VirtioFsFile->IsDirectory
- );
- //
- // VirtioFsFile->FuseHandle is gone at this point, but VirtioFsFile->NodeId
- // is still valid. If we've known VirtioFsFile->NodeId from a lookup, then
- // now we should ask the server to forget it *once*.
- //
- if (VirtioFsFile->NodeId != VIRTIO_FS_FUSE_ROOT_DIR_NODE_ID) {
- VirtioFsFuseForget (VirtioFs, VirtioFsFile->NodeId);
- }
- //
- // One fewer file left open for the owner filesystem.
- //
- RemoveEntryList (&VirtioFsFile->OpenFilesEntry);
- FreePool (VirtioFsFile->CanonicalPathname);
- if (VirtioFsFile->FileInfoArray != NULL) {
- FreePool (VirtioFsFile->FileInfoArray);
- }
- FreePool (VirtioFsFile);
- return EFI_SUCCESS;
- }
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