diff options
Diffstat (limited to 'FatPkg/EnhancedFatDxe/Flush.c')
| -rw-r--r-- | FatPkg/EnhancedFatDxe/Flush.c | 474 |
1 files changed, 0 insertions, 474 deletions
diff --git a/FatPkg/EnhancedFatDxe/Flush.c b/FatPkg/EnhancedFatDxe/Flush.c deleted file mode 100644 index 9cb0d9ac18..0000000000 --- a/FatPkg/EnhancedFatDxe/Flush.c +++ /dev/null @@ -1,474 +0,0 @@ -/** @file
- Routines that check references and flush OFiles
-
-Copyright (c) 2005 - 2013, 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
-http://opensource.org/licenses/bsd-license.php
-
-THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
-WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
-
-
-**/
-
-#include "Fat.h"
-
-/**
-
- Flushes all data associated with the file handle.
-
- @param FHand - Handle to file to flush.
- @param Token - A pointer to the token associated with the transaction.
-
- @retval EFI_SUCCESS - Flushed the file successfully.
- @retval EFI_WRITE_PROTECTED - The volume is read only.
- @retval EFI_ACCESS_DENIED - The file is read only.
- @return Others - Flushing of the file failed.
-
-**/
-EFI_STATUS
-EFIAPI
-FatFlushEx (
- IN EFI_FILE_PROTOCOL *FHand,
- IN EFI_FILE_IO_TOKEN *Token
- )
-{
- FAT_IFILE *IFile;
- FAT_OFILE *OFile;
- FAT_VOLUME *Volume;
- EFI_STATUS Status;
- FAT_TASK *Task;
-
- IFile = IFILE_FROM_FHAND (FHand);
- OFile = IFile->OFile;
- Volume = OFile->Volume;
- Task = NULL;
-
- //
- // If the file has a permanent error, return it
- //
- if (EFI_ERROR (OFile->Error)) {
- return OFile->Error;
- }
-
- if (Volume->ReadOnly) {
- return EFI_WRITE_PROTECTED;
- }
- //
- // If read only, return error
- //
- if (IFile->ReadOnly) {
- return EFI_ACCESS_DENIED;
- }
-
- if (Token == NULL) {
- FatWaitNonblockingTask (IFile);
- } else {
- //
- // Caller shouldn't call the non-blocking interfaces if the low layer doesn't support DiskIo2.
- // But if it calls, the below check can avoid crash.
- //
- if (FHand->Revision < EFI_FILE_PROTOCOL_REVISION2) {
- return EFI_UNSUPPORTED;
- }
- Task = FatCreateTask (IFile, Token);
- if (Task == NULL) {
- return EFI_OUT_OF_RESOURCES;
- }
- }
-
- //
- // Flush the OFile
- //
- FatAcquireLock ();
- Status = FatOFileFlush (OFile);
- Status = FatCleanupVolume (OFile->Volume, OFile, Status, Task);
- FatReleaseLock ();
-
- if (Token != NULL) {
- if (!EFI_ERROR (Status)) {
- Status = FatQueueTask (IFile, Task);
- } else {
- FatDestroyTask (Task);
- }
- }
-
- return Status;
-}
-
-/**
-
- Flushes all data associated with the file handle.
-
- @param FHand - Handle to file to flush.
-
- @retval EFI_SUCCESS - Flushed the file successfully.
- @retval EFI_WRITE_PROTECTED - The volume is read only.
- @retval EFI_ACCESS_DENIED - The file is read only.
- @return Others - Flushing of the file failed.
-
-**/
-EFI_STATUS
-EFIAPI
-FatFlush (
- IN EFI_FILE_PROTOCOL *FHand
- )
-{
- return FatFlushEx (FHand, NULL);
-}
-
-/**
-
- Flushes & Closes the file handle.
-
- @param FHand - Handle to the file to delete.
-
- @retval EFI_SUCCESS - Closed the file successfully.
-
-**/
-EFI_STATUS
-EFIAPI
-FatClose (
- IN EFI_FILE_PROTOCOL *FHand
- )
-{
- FAT_IFILE *IFile;
- FAT_OFILE *OFile;
- FAT_VOLUME *Volume;
-
- IFile = IFILE_FROM_FHAND (FHand);
- OFile = IFile->OFile;
- Volume = OFile->Volume;
-
- //
- // Lock the volume
- //
- FatAcquireLock ();
-
- //
- // Close the file instance handle
- //
- FatIFileClose (IFile);
-
- //
- // Done. Unlock the volume
- //
- FatCleanupVolume (Volume, OFile, EFI_SUCCESS, NULL);
- FatReleaseLock ();
-
- //
- // Close always succeed
- //
- return EFI_SUCCESS;
-}
-
-/**
-
- Close the open file instance.
-
- @param IFile - Open file instance.
-
- @retval EFI_SUCCESS - Closed the file successfully.
-
-**/
-EFI_STATUS
-FatIFileClose (
- FAT_IFILE *IFile
- )
-{
- FAT_OFILE *OFile;
- FAT_VOLUME *Volume;
-
- OFile = IFile->OFile;
- Volume = OFile->Volume;
-
- ASSERT_VOLUME_LOCKED (Volume);
-
- FatWaitNonblockingTask (IFile);
-
- //
- // Remove the IFile struct
- //
- RemoveEntryList (&IFile->Link);
-
- //
- // Add the OFile to the check reference list
- //
- if (OFile->CheckLink.ForwardLink == NULL) {
- InsertHeadList (&Volume->CheckRef, &OFile->CheckLink);
- }
- //
- // Done. Free the open instance structure
- //
- FreePool (IFile);
- return EFI_SUCCESS;
-}
-
-/**
-
- Flush the data associated with an open file.
- In this implementation, only last Mod/Access time is updated.
-
- @param OFile - The open file.
-
- @retval EFI_SUCCESS - The OFile is flushed successfully.
- @return Others - An error occurred when flushing this OFile.
-
-**/
-EFI_STATUS
-FatOFileFlush (
- IN FAT_OFILE *OFile
- )
-{
- EFI_STATUS Status;
- FAT_OFILE *Parent;
- FAT_DIRENT *DirEnt;
- FAT_DATE_TIME FatNow;
-
- //
- // Flush each entry up the tree while dirty
- //
- do {
- //
- // If the file has a permanant error, then don't write any
- // of its data to the device (may be from different media)
- //
- if (EFI_ERROR (OFile->Error)) {
- return OFile->Error;
- }
-
- Parent = OFile->Parent;
- DirEnt = OFile->DirEnt;
- if (OFile->Dirty) {
- //
- // Update the last modification time
- //
- FatGetCurrentFatTime (&FatNow);
- CopyMem (&DirEnt->Entry.FileLastAccess, &FatNow.Date, sizeof (FAT_DATE));
- if (!OFile->PreserveLastModification) {
- FatGetCurrentFatTime (&DirEnt->Entry.FileModificationTime);
- }
-
- OFile->PreserveLastModification = FALSE;
- if (OFile->Archive) {
- DirEnt->Entry.Attributes |= FAT_ATTRIBUTE_ARCHIVE;
- OFile->Archive = FALSE;
- }
- //
- // Write the directory entry
- //
- if (Parent != NULL && !DirEnt->Invalid) {
- //
- // Write the OFile's directory entry
- //
- Status = FatStoreDirEnt (Parent, DirEnt);
- if (EFI_ERROR (Status)) {
- return Status;
- }
- }
-
- OFile->Dirty = FALSE;
- }
- //
- // Check the parent
- //
- OFile = Parent;
- } while (OFile != NULL);
- return EFI_SUCCESS;
-}
-
-/**
-
- Check the references of the OFile.
- If the OFile (that is checked) is no longer
- referenced, then it is freed.
-
- @param OFile - The OFile to be checked.
-
- @retval TRUE - The OFile is not referenced and freed.
- @retval FALSE - The OFile is kept.
-
-**/
-BOOLEAN
-FatCheckOFileRef (
- IN FAT_OFILE *OFile
- )
-{
- //
- // If the OFile is on the check ref list, remove it
- //
- if (OFile->CheckLink.ForwardLink != NULL) {
- RemoveEntryList (&OFile->CheckLink);
- OFile->CheckLink.ForwardLink = NULL;
- }
-
- FatOFileFlush (OFile);
- //
- // Are there any references to this OFile?
- //
- if (!IsListEmpty (&OFile->Opens) || !IsListEmpty (&OFile->ChildHead)) {
- //
- // The OFile cannot be freed
- //
- return FALSE;
- }
- //
- // Free the Ofile
- //
- FatCloseDirEnt (OFile->DirEnt);
- return TRUE;
-}
-
-/**
-
- Check the references of all open files on the volume.
- Any open file (that is checked) that is no longer
- referenced, is freed - and it's parent open file
- is then referenced checked.
-
- @param Volume - The volume to check the pending open file list.
-
-**/
-STATIC
-VOID
-FatCheckVolumeRef (
- IN FAT_VOLUME *Volume
- )
-{
- FAT_OFILE *OFile;
- FAT_OFILE *Parent;
-
- //
- // Check all files on the pending check list
- //
- while (!IsListEmpty (&Volume->CheckRef)) {
- //
- // Start with the first file listed
- //
- Parent = OFILE_FROM_CHECKLINK (Volume->CheckRef.ForwardLink);
- //
- // Go up the tree cleaning up any un-referenced OFiles
- //
- while (Parent != NULL) {
- OFile = Parent;
- Parent = OFile->Parent;
- if (!FatCheckOFileRef (OFile)) {
- break;
- }
- }
- }
-}
-
-/**
-
- Set error status for a specific OFile, reference checking the volume.
- If volume is already marked as invalid, and all resources are freed
- after reference checking, the file system protocol is uninstalled and
- the volume structure is freed.
-
- @param Volume - the Volume that is to be reference checked and unlocked.
- @param OFile - the OFile whose permanent error code is to be set.
- @param EfiStatus - error code to be set.
- @param Task point to task instance.
-
- @retval EFI_SUCCESS - Clean up the volume successfully.
- @return Others - Cleaning up of the volume is failed.
-
-**/
-EFI_STATUS
-FatCleanupVolume (
- IN FAT_VOLUME *Volume,
- IN FAT_OFILE *OFile,
- IN EFI_STATUS EfiStatus,
- IN FAT_TASK *Task
- )
-{
- EFI_STATUS Status;
- //
- // Flag the OFile
- //
- if (OFile != NULL) {
- FatSetVolumeError (OFile, EfiStatus);
- }
- //
- // Clean up any dangling OFiles that don't have IFiles
- // we don't check return status here because we want the
- // volume be cleaned up even the volume is invalid.
- //
- FatCheckVolumeRef (Volume);
- if (Volume->Valid) {
- //
- // Update the free hint info. Volume->FreeInfoPos != 0
- // indicates this a FAT32 volume
- //
- if (Volume->FreeInfoValid && Volume->FatDirty && Volume->FreeInfoPos) {
- Status = FatDiskIo (Volume, WriteDisk, Volume->FreeInfoPos, sizeof (FAT_INFO_SECTOR), &Volume->FatInfoSector, Task);
- if (EFI_ERROR (Status)) {
- return Status;
- }
- }
- //
- // Update that the volume is not dirty
- //
- if (Volume->FatDirty && Volume->FatType != Fat12) {
- Volume->FatDirty = FALSE;
- Status = FatAccessVolumeDirty (Volume, WriteFat, &Volume->NotDirtyValue);
- if (EFI_ERROR (Status)) {
- return Status;
- }
- }
- //
- // Flush all dirty cache entries to disk
- //
- Status = FatVolumeFlushCache (Volume, Task);
- if (EFI_ERROR (Status)) {
- return Status;
- }
- }
- //
- // If the volume is cleared , remove it.
- // The only time volume be invalidated is in DriverBindingStop.
- //
- if (Volume->Root == NULL && !Volume->Valid) {
- //
- // Free the volume structure
- //
- FatFreeVolume (Volume);
- }
-
- return EfiStatus;
-}
-
-/**
-
- Set the OFile and its child OFile with the error Status
-
- @param OFile - The OFile whose permanent error code is to be set.
- @param Status - Error code to be set.
-
-**/
-VOID
-FatSetVolumeError (
- IN FAT_OFILE *OFile,
- IN EFI_STATUS Status
- )
-{
- LIST_ENTRY *Link;
- FAT_OFILE *ChildOFile;
-
- //
- // If this OFile doesn't already have an error, set one
- //
- if (!EFI_ERROR (OFile->Error)) {
- OFile->Error = Status;
- }
- //
- // Set the error on each child OFile
- //
- for (Link = OFile->ChildHead.ForwardLink; Link != &OFile->ChildHead; Link = Link->ForwardLink) {
- ChildOFile = OFILE_FROM_CHILDLINK (Link);
- FatSetVolumeError (ChildOFile, Status);
- }
-}
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