diff options
Diffstat (limited to 'FatPkg/EnhancedFatDxe/Misc.c')
| -rw-r--r-- | FatPkg/EnhancedFatDxe/Misc.c | 609 |
1 files changed, 0 insertions, 609 deletions
diff --git a/FatPkg/EnhancedFatDxe/Misc.c b/FatPkg/EnhancedFatDxe/Misc.c deleted file mode 100644 index c035670bf7..0000000000 --- a/FatPkg/EnhancedFatDxe/Misc.c +++ /dev/null @@ -1,609 +0,0 @@ -/** @file
- Miscellaneous functions.
-
-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"
-UINT8 mMonthDays[] = { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
-
-/**
-
- Create the task
-
- @param IFile - The instance of the open file.
- @param Token - A pointer to the token associated with the transaction.
-
- @return FAT_TASK * - Return the task instance.
-
-**/
-FAT_TASK *
-FatCreateTask (
- FAT_IFILE *IFile,
- EFI_FILE_IO_TOKEN *Token
- )
-{
- FAT_TASK *Task;
-
- Task = AllocateZeroPool (sizeof (*Task));
- if (Task != NULL) {
- Task->Signature = FAT_TASK_SIGNATURE;
- Task->IFile = IFile;
- Task->FileIoToken = Token;
- InitializeListHead (&Task->Subtasks);
- InitializeListHead (&Task->Link);
- }
- return Task;
-}
-
-/**
-
- Destroy the task.
-
- @param Task - The task to be destroyed.
-
-**/
-VOID
-FatDestroyTask (
- FAT_TASK *Task
- )
-{
- LIST_ENTRY *Link;
- FAT_SUBTASK *Subtask;
-
- Link = GetFirstNode (&Task->Subtasks);
- while (!IsNull (&Task->Subtasks, Link)) {
- Subtask = CR (Link, FAT_SUBTASK, Link, FAT_SUBTASK_SIGNATURE);
- Link = FatDestroySubtask (Subtask);
- }
- FreePool (Task);
-}
-
-/**
-
- Wait all non-blocking requests complete.
-
- @param IFile - The instance of the open file.
-
-**/
-VOID
-FatWaitNonblockingTask (
- FAT_IFILE *IFile
- )
-{
- BOOLEAN TaskQueueEmpty;
-
- do {
- EfiAcquireLock (&FatTaskLock);
- TaskQueueEmpty = IsListEmpty (&IFile->Tasks);
- EfiReleaseLock (&FatTaskLock);
- } while (!TaskQueueEmpty);
-}
-
-/**
-
- Remove the subtask from subtask list.
-
- @param Subtask - The subtask to be removed.
-
- @return LIST_ENTRY * - The next node in the list.
-
-**/
-LIST_ENTRY *
-FatDestroySubtask (
- FAT_SUBTASK *Subtask
- )
-{
- LIST_ENTRY *Link;
-
- gBS->CloseEvent (Subtask->DiskIo2Token.Event);
-
- Link = RemoveEntryList (&Subtask->Link);
- FreePool (Subtask);
-
- return Link;
-}
-
-/**
-
- Execute the task.
-
- @param IFile - The instance of the open file.
- @param Task - The task to be executed.
-
- @retval EFI_SUCCESS - The task was executed sucessfully.
- @return other - An error occurred when executing the task.
-
-**/
-EFI_STATUS
-FatQueueTask (
- IN FAT_IFILE *IFile,
- IN FAT_TASK *Task
- )
-{
- EFI_STATUS Status;
- LIST_ENTRY *Link;
- FAT_SUBTASK *Subtask;
-
- //
- // Sometimes the Task doesn't contain any subtasks, signal the event directly.
- //
- if (IsListEmpty (&Task->Subtasks)) {
- Task->FileIoToken->Status = EFI_SUCCESS;
- gBS->SignalEvent (Task->FileIoToken->Event);
- FreePool (Task);
- return EFI_SUCCESS;
- }
-
- EfiAcquireLock (&FatTaskLock);
- InsertTailList (&IFile->Tasks, &Task->Link);
- EfiReleaseLock (&FatTaskLock);
-
- Status = EFI_SUCCESS;
- for ( Link = GetFirstNode (&Task->Subtasks)
- ; !IsNull (&Task->Subtasks, Link)
- ; Link = GetNextNode (&Task->Subtasks, Link)
- ) {
- Subtask = CR (Link, FAT_SUBTASK, Link, FAT_SUBTASK_SIGNATURE);
- if (Subtask->Write) {
-
- Status = IFile->OFile->Volume->DiskIo2->WriteDiskEx (
- IFile->OFile->Volume->DiskIo2,
- IFile->OFile->Volume->MediaId,
- Subtask->Offset,
- &Subtask->DiskIo2Token,
- Subtask->BufferSize,
- Subtask->Buffer
- );
- } else {
- Status = IFile->OFile->Volume->DiskIo2->ReadDiskEx (
- IFile->OFile->Volume->DiskIo2,
- IFile->OFile->Volume->MediaId,
- Subtask->Offset,
- &Subtask->DiskIo2Token,
- Subtask->BufferSize,
- Subtask->Buffer
- );
- }
- if (EFI_ERROR (Status)) {
- break;
- }
- }
-
- if (EFI_ERROR (Status)) {
- EfiAcquireLock (&FatTaskLock);
- //
- // Remove all the remaining subtasks when failure.
- // We shouldn't remove all the tasks because the non-blocking requests have
- // been submitted and cannot be canceled.
- //
- while (!IsNull (&Task->Subtasks, Link)) {
- Subtask = CR (Link, FAT_SUBTASK, Link, FAT_SUBTASK_SIGNATURE);
- Link = FatDestroySubtask (Subtask);
- }
-
- if (IsListEmpty (&Task->Subtasks)) {
- RemoveEntryList (&Task->Link);
- FreePool (Task);
- } else {
- //
- // If one or more subtasks have been already submitted, set FileIoToken
- // to NULL so that the callback won't signal the event.
- //
- Task->FileIoToken = NULL;
- }
-
- EfiReleaseLock (&FatTaskLock);
- }
-
- return Status;
-}
-
-/**
-
- Set the volume as dirty or not.
-
- @param Volume - FAT file system volume.
- @param IoMode - The access mode.
- @param DirtyValue - Set the volume as dirty or not.
-
- @retval EFI_SUCCESS - Set the new FAT entry value sucessfully.
- @return other - An error occurred when operation the FAT entries.
-
-**/
-EFI_STATUS
-FatAccessVolumeDirty (
- IN FAT_VOLUME *Volume,
- IN IO_MODE IoMode,
- IN VOID *DirtyValue
- )
-{
- UINTN WriteCount;
-
- WriteCount = Volume->FatEntrySize;
- return FatDiskIo (Volume, IoMode, Volume->FatPos + WriteCount, WriteCount, DirtyValue, NULL);
-}
-
-/**
- Invoke a notification event.
-
- @param Event Event whose notification function is being invoked.
- @param Context The pointer to the notification function's context,
- which is implementation-dependent.
-
-**/
-VOID
-EFIAPI
-FatOnAccessComplete (
- IN EFI_EVENT Event,
- IN VOID *Context
- )
-{
- EFI_STATUS Status;
- FAT_SUBTASK *Subtask;
- FAT_TASK *Task;
-
- //
- // Avoid someone in future breaks the below assumption.
- //
- ASSERT (EfiGetCurrentTpl () == FatTaskLock.Tpl);
-
- Subtask = (FAT_SUBTASK *) Context;
- Task = Subtask->Task;
- Status = Subtask->DiskIo2Token.TransactionStatus;
-
- ASSERT (Task->Signature == FAT_TASK_SIGNATURE);
- ASSERT (Subtask->Signature == FAT_SUBTASK_SIGNATURE);
-
- //
- // Remove the task unconditionally
- //
- FatDestroySubtask (Subtask);
-
- //
- // Task->FileIoToken is NULL which means the task will be ignored (just recycle the subtask and task memory).
- //
- if (Task->FileIoToken != NULL) {
- if (IsListEmpty (&Task->Subtasks) || EFI_ERROR (Status)) {
- Task->FileIoToken->Status = Status;
- gBS->SignalEvent (Task->FileIoToken->Event);
- //
- // Mark Task->FileIoToken to NULL so that the subtasks belonging to the task will be ignored.
- //
- Task->FileIoToken = NULL;
- }
- }
-
- if (IsListEmpty (&Task->Subtasks)) {
- RemoveEntryList (&Task->Link);
- FreePool (Task);
- }
-}
-
-/**
-
- General disk access function.
-
- @param Volume - FAT file system volume.
- @param IoMode - The access mode (disk read/write or cache access).
- @param Offset - The starting byte offset to read from.
- @param BufferSize - Size of Buffer.
- @param Buffer - Buffer containing read data.
- @param Task point to task instance.
-
- @retval EFI_SUCCESS - The operation is performed successfully.
- @retval EFI_VOLUME_CORRUPTED - The accesss is
- @return Others - The status of read/write the disk
-
-**/
-EFI_STATUS
-FatDiskIo (
- IN FAT_VOLUME *Volume,
- IN IO_MODE IoMode,
- IN UINT64 Offset,
- IN UINTN BufferSize,
- IN OUT VOID *Buffer,
- IN FAT_TASK *Task
- )
-{
- EFI_STATUS Status;
- EFI_DISK_IO_PROTOCOL *DiskIo;
- EFI_DISK_READ IoFunction;
- FAT_SUBTASK *Subtask;
-
- //
- // Verify the IO is in devices range
- //
- Status = EFI_VOLUME_CORRUPTED;
- if (Offset + BufferSize <= Volume->VolumeSize) {
- if (CACHE_ENABLED (IoMode)) {
- //
- // Access cache
- //
- Status = FatAccessCache (Volume, CACHE_TYPE (IoMode), RAW_ACCESS (IoMode), Offset, BufferSize, Buffer, Task);
- } else {
- //
- // Access disk directly
- //
- if (Task == NULL) {
- //
- // Blocking access
- //
- DiskIo = Volume->DiskIo;
- IoFunction = (IoMode == ReadDisk) ? DiskIo->ReadDisk : DiskIo->WriteDisk;
- Status = IoFunction (DiskIo, Volume->MediaId, Offset, BufferSize, Buffer);
- } else {
- //
- // Non-blocking access
- //
- Subtask = AllocateZeroPool (sizeof (*Subtask));
- if (Subtask == NULL) {
- Status = EFI_OUT_OF_RESOURCES;
- } else {
- Subtask->Signature = FAT_SUBTASK_SIGNATURE;
- Subtask->Task = Task;
- Subtask->Write = (BOOLEAN) (IoMode == WriteDisk);
- Subtask->Offset = Offset;
- Subtask->Buffer = Buffer;
- Subtask->BufferSize = BufferSize;
- Status = gBS->CreateEvent (
- EVT_NOTIFY_SIGNAL,
- TPL_NOTIFY,
- FatOnAccessComplete,
- Subtask,
- &Subtask->DiskIo2Token.Event
- );
- if (!EFI_ERROR (Status)) {
- InsertTailList (&Task->Subtasks, &Subtask->Link);
- } else {
- FreePool (Subtask);
- }
- }
- }
- }
- }
-
- if (EFI_ERROR (Status)) {
- Volume->DiskError = TRUE;
- DEBUG ((EFI_D_ERROR, "FatDiskIo: error %r\n", Status));
- }
-
- return Status;
-}
-
-/**
-
- Lock the volume.
-
-**/
-VOID
-FatAcquireLock (
- VOID
- )
-{
- EfiAcquireLock (&FatFsLock);
-}
-
-/**
-
- Lock the volume.
- If the lock is already in the acquired state, then EFI_ACCESS_DENIED is returned.
- Otherwise, EFI_SUCCESS is returned.
-
- @retval EFI_SUCCESS - The volume is locked.
- @retval EFI_ACCESS_DENIED - The volume could not be locked because it is already locked.
-
-**/
-EFI_STATUS
-FatAcquireLockOrFail (
- VOID
- )
-{
- return EfiAcquireLockOrFail (&FatFsLock);
-}
-
-/**
-
- Unlock the volume.
-
-**/
-VOID
-FatReleaseLock (
- VOID
- )
-{
- EfiReleaseLock (&FatFsLock);
-}
-
-/**
-
- Free directory entry.
-
- @param DirEnt - The directory entry to be freed.
-
-**/
-VOID
-FatFreeDirEnt (
- IN FAT_DIRENT *DirEnt
- )
-{
- if (DirEnt->FileString != NULL) {
- FreePool (DirEnt->FileString);
- }
-
- FreePool (DirEnt);
-}
-
-/**
-
- Free volume structure (including the contents of directory cache and disk cache).
-
- @param Volume - The volume structure to be freed.
-
-**/
-VOID
-FatFreeVolume (
- IN FAT_VOLUME *Volume
- )
-{
- //
- // Free disk cache
- //
- if (Volume->CacheBuffer != NULL) {
- FreePool (Volume->CacheBuffer);
- }
- //
- // Free directory cache
- //
- FatCleanupODirCache (Volume);
- FreePool (Volume);
-}
-
-/**
-
- Translate EFI time to FAT time.
-
- @param ETime - The time of EFI_TIME.
- @param FTime - The time of FAT_DATE_TIME.
-
-**/
-VOID
-FatEfiTimeToFatTime (
- IN EFI_TIME *ETime,
- OUT FAT_DATE_TIME *FTime
- )
-{
- //
- // ignores timezone info in source ETime
- //
- if (ETime->Year > 1980) {
- FTime->Date.Year = (UINT16) (ETime->Year - 1980);
- }
-
- if (ETime->Year >= 1980 + FAT_MAX_YEAR_FROM_1980) {
- FTime->Date.Year = FAT_MAX_YEAR_FROM_1980;
- }
-
- FTime->Date.Month = ETime->Month;
- FTime->Date.Day = ETime->Day;
- FTime->Time.Hour = ETime->Hour;
- FTime->Time.Minute = ETime->Minute;
- FTime->Time.DoubleSecond = (UINT16) (ETime->Second / 2);
-}
-
-/**
-
- Translate Fat time to EFI time.
-
- @param FTime - The time of FAT_DATE_TIME.
- @param ETime - The time of EFI_TIME..
-
-**/
-VOID
-FatFatTimeToEfiTime (
- IN FAT_DATE_TIME *FTime,
- OUT EFI_TIME *ETime
- )
-{
- ETime->Year = (UINT16) (FTime->Date.Year + 1980);
- ETime->Month = (UINT8) FTime->Date.Month;
- ETime->Day = (UINT8) FTime->Date.Day;
- ETime->Hour = (UINT8) FTime->Time.Hour;
- ETime->Minute = (UINT8) FTime->Time.Minute;
- ETime->Second = (UINT8) (FTime->Time.DoubleSecond * 2);
- ETime->Nanosecond = 0;
- ETime->TimeZone = EFI_UNSPECIFIED_TIMEZONE;
- ETime->Daylight = 0;
-}
-
-/**
-
- Get Current FAT time.
-
- @param FatNow - Current FAT time.
-
-**/
-VOID
-FatGetCurrentFatTime (
- OUT FAT_DATE_TIME *FatNow
- )
-{
- EFI_STATUS Status;
- EFI_TIME Now;
-
- Status = gRT->GetTime (&Now, NULL);
- if (!EFI_ERROR (Status)) {
- FatEfiTimeToFatTime (&Now, FatNow);
- } else {
- ZeroMem (&Now, sizeof (EFI_TIME));
- Now.Year = 1980;
- Now.Month = 1;
- Now.Day = 1;
- FatEfiTimeToFatTime (&Now, FatNow);
- }
-}
-
-/**
-
- Check whether a time is valid.
-
- @param Time - The time of EFI_TIME.
-
- @retval TRUE - The time is valid.
- @retval FALSE - The time is not valid.
-
-**/
-BOOLEAN
-FatIsValidTime (
- IN EFI_TIME *Time
- )
-{
- UINTN Day;
- BOOLEAN ValidTime;
-
- ValidTime = TRUE;
-
- //
- // Check the fields for range problems
- // Fat can only support from 1980
- //
- if (Time->Year < 1980 ||
- Time->Month < 1 ||
- Time->Month > 12 ||
- Time->Day < 1 ||
- Time->Day > 31 ||
- Time->Hour > 23 ||
- Time->Minute > 59 ||
- Time->Second > 59 ||
- Time->Nanosecond > 999999999
- ) {
-
- ValidTime = FALSE;
-
- } else {
- //
- // Perform a more specific check of the day of the month
- //
- Day = mMonthDays[Time->Month - 1];
- if (Time->Month == 2 && IS_LEAP_YEAR (Time->Year)) {
- Day += 1;
- //
- // 1 extra day this month
- //
- }
- if (Time->Day > Day) {
- ValidTime = FALSE;
- }
- }
-
- return ValidTime;
-}
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