Add EDK II Prime FatPkg New Feature: Support both Unicode Collation and Unicode Collation 2 Protocols Support both Component Name and Component Name 2 Protocol.
(based on FatPkg commit e51cd032db84a6fb1f44a0605f80d96f5fdf4bc6) [jordan.l.justen@intel.com: Use script to relicense to 2-clause BSD] Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Jordan Justen <jordan.l.justen@intel.com> Acked-by: Mark Doran <mark.doran@intel.com> Acked-by: Laszlo Ersek <lersek@redhat.com>
This commit is contained in:
Qing Huang
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Jordan Justen
Jordan Justen
parent
f0dc69e61b
commit
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409
FatPkg/EnhancedFatDxe/Misc.c
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409
FatPkg/EnhancedFatDxe/Misc.c
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/*++
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Copyright (c) 2005, Intel Corporation
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All rights reserved. This program and the accompanying materials are licensed and made available
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under the terms and conditions of the BSD License which accompanies this
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distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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Module Name:
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Misc.c
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Abstract:
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Miscellaneous functions
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Revision History
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--*/
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#include "Fat.h"
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EFI_STATUS
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FatAccessVolumeDirty (
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IN FAT_VOLUME *Volume,
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IN IO_MODE IoMode,
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IN VOID *DirtyValue
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)
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/*++
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Routine Description:
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Set the volume as dirty or not
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Arguments:
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Volume - FAT file system volume.
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IoMode - The access mode.
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DirtyValue - Set the volume as dirty or not.
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Returns:
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EFI_SUCCESS - Set the new FAT entry value sucessfully.
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other - An error occurred when operation the FAT entries.
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--*/
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{
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UINTN WriteCount;
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WriteCount = Volume->FatEntrySize;
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return FatDiskIo (Volume, IoMode, Volume->FatPos + WriteCount, WriteCount, DirtyValue);
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}
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EFI_STATUS
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FatDiskIo (
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IN FAT_VOLUME *Volume,
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IN IO_MODE IoMode,
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IN UINT64 Offset,
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IN UINTN BufferSize,
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IN OUT VOID *Buffer
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)
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/*++
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Routine Description:
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General disk access function
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Arguments:
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Volume - FAT file system volume.
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IoMode - The access mode (disk read/write or cache access).
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Offset - The starting byte offset to read from.
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BufferSize - Size of Buffer.
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Buffer - Buffer containing read data.
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Returns:
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EFI_SUCCESS - The operation is performed successfully.
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EFI_VOLUME_CORRUPTED - The accesss is
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Others - The status of read/write the disk
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--*/
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{
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EFI_STATUS Status;
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EFI_DISK_IO_PROTOCOL *DiskIo;
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EFI_DISK_READ IoFunction;
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//
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// Verify the IO is in devices range
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//
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Status = EFI_VOLUME_CORRUPTED;
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if (Offset + BufferSize <= Volume->VolumeSize) {
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if (CACHE_ENABLED (IoMode)) {
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//
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// Access cache
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//
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Status = FatAccessCache (Volume, CACHE_TYPE (IoMode), RAW_ACCESS (IoMode), Offset, BufferSize, Buffer);
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} else {
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//
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// Access disk directly
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//
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DiskIo = Volume->DiskIo;
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IoFunction = (IoMode == READ_DISK) ? DiskIo->ReadDisk : DiskIo->WriteDisk;
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Status = IoFunction (DiskIo, Volume->MediaId, Offset, BufferSize, Buffer);
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}
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}
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if (EFI_ERROR (Status)) {
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Volume->DiskError = TRUE;
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DEBUG ((EFI_D_INFO, "FatDiskIo: error %r\n", Status));
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}
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return Status;
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}
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VOID
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FatAcquireLock (
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VOID
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)
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/*++
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Routine Description:
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Lock the volume.
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Arguments:
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None.
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Returns:
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None.
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--*/
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{
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EfiAcquireLock (&FatFsLock);
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}
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BOOLEAN
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FatIsLocked (
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VOID
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)
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/*++
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Routine Description:
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Get the locking status of the volume.
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Arguments:
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None.
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Returns:
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TRUE - The volume is locked.
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FALSE - The volume is not locked.
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--*/
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{
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return (BOOLEAN) (FatFsLock.Lock);
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}
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VOID
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FatReleaseLock (
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VOID
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)
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/*++
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Routine Description:
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Unlock the volume.
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Arguments:
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Null.
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Returns:
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None.
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--*/
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{
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EfiReleaseLock (&FatFsLock);
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}
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VOID
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FatFreeDirEnt (
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IN FAT_DIRENT *DirEnt
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)
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/*++
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Routine Description:
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Free directory entry.
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Arguments:
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DirEnt - The directory entry to be freed.
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Returns:
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None.
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--*/
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{
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if (DirEnt->FileString != NULL) {
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FreePool (DirEnt->FileString);
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}
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FreePool (DirEnt);
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}
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VOID
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FatFreeVolume (
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IN FAT_VOLUME *Volume
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)
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/*++
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Routine Description:
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Free volume structure (including the contents of directory cache and disk cache).
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Arguments:
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Volume - The volume structure to be freed.
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Returns:
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None.
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--*/
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{
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//
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// Free disk cache
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//
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if (Volume->CacheBuffer != NULL) {
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FreePool (Volume->CacheBuffer);
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}
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//
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// Free directory cache
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//
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FatCleanupODirCache (Volume);
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FreePool (Volume);
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}
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VOID
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FatEfiTimeToFatTime (
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IN EFI_TIME *ETime,
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OUT FAT_DATE_TIME *FTime
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)
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/*++
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Routine Description:
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Translate EFI time to FAT time.
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Arguments:
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ETime - The time of EFI_TIME.
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FTime - The time of FAT_DATE_TIME.
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Returns:
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None.
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--*/
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{
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//
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// ignores timezone info in source ETime
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//
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if (ETime->Year > 1980) {
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FTime->Date.Year = (UINT16) (ETime->Year - 1980);
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}
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if (ETime->Year >= 1980 + FAT_MAX_YEAR_FROM_1980) {
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FTime->Date.Year = FAT_MAX_YEAR_FROM_1980;
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}
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FTime->Date.Month = ETime->Month;
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FTime->Date.Day = ETime->Day;
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FTime->Time.Hour = ETime->Hour;
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FTime->Time.Minute = ETime->Minute;
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FTime->Time.DoubleSecond = (UINT16) (ETime->Second / 2);
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}
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VOID
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FatFatTimeToEfiTime (
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IN FAT_DATE_TIME *FTime,
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OUT EFI_TIME *ETime
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)
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/*++
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Routine Description:
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Translate Fat time to EFI time.
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Arguments:
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FTime - The time of FAT_DATE_TIME.
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ETime - The time of EFI_TIME.
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Returns:
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None.
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--*/
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{
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ETime->Year = (UINT16) (FTime->Date.Year + 1980);
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ETime->Month = (UINT8) FTime->Date.Month;
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ETime->Day = (UINT8) FTime->Date.Day;
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ETime->Hour = (UINT8) FTime->Time.Hour;
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ETime->Minute = (UINT8) FTime->Time.Minute;
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ETime->Second = (UINT8) (FTime->Time.DoubleSecond * 2);
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ETime->Nanosecond = 0;
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ETime->TimeZone = EFI_UNSPECIFIED_TIMEZONE;
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ETime->Daylight = 0;
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}
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VOID
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FatGetCurrentFatTime (
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OUT FAT_DATE_TIME *FatNow
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)
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/*++
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Routine Description:
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Get Current FAT time.
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Arguments:
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FatNow - Current FAT time.
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Returns:
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None.
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--*/
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{
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EFI_TIME Now;
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gRT->GetTime (&Now, NULL);
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FatEfiTimeToFatTime (&Now, FatNow);
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}
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BOOLEAN
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FatIsValidTime (
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IN EFI_TIME *Time
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)
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/*++
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Routine Description:
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Check whether a time is valid.
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Arguments:
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Time - The time of EFI_TIME.
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Returns:
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TRUE - The time is valid.
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FALSE - The time is not valid.
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--*/
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{
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static UINT8 MonthDays[] = { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
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UINTN Day;
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BOOLEAN ValidTime;
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ValidTime = TRUE;
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//
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// Check the fields for range problems
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// Fat can only support from 1980
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//
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if (Time->Year < 1980 ||
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Time->Month < 1 ||
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Time->Month > 12 ||
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Time->Day < 1 ||
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Time->Day > 31 ||
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Time->Hour > 23 ||
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Time->Minute > 59 ||
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Time->Second > 59 ||
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Time->Nanosecond > 999999999
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) {
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ValidTime = FALSE;
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} else {
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//
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// Perform a more specific check of the day of the month
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//
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Day = MonthDays[Time->Month - 1];
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if (Time->Month == 2 && IS_LEAP_YEAR (Time->Year)) {
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Day += 1;
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//
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// 1 extra day this month
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//
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}
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if (Time->Day > Day) {
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ValidTime = FALSE;
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}
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}
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return ValidTime;
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}
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