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MdeModulePkg/UDF: Fix creation of UDF logical partition 

Do not reserve entire block device size for an UDF file system -
instead, reserve the appropriate space (UDF logical volume space) for
it.

Additionally, only create a logical partition for UDF logical volumes
that are currently supported by EDK2 UDF file system implementation. For
instance, an UDF volume with a single LVD and a single Physical (Type 1)
Partition will be supported.

Cc: Eric Dong <eric.dong@intel.com>
Cc: Ruiyu Ni <ruiyu.ni@intel.com>
Cc: Star Zeng <star.zeng@intel.com>
Cc: Laszlo Ersek <lersek@redhat.com>
Reported-by: Ruiyu Ni <ruiyu.ni@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Paulo Alcantara <pcacjr@zytor.com>
Tested-by: Hao Wu <hao.a.wu@intel.com>
Build-tested-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Star Zeng <star.zeng@intel.com>
Build-tested-by: Star Zeng <star.zeng@intel.com>
Build-tested-by: Paulo Alcantara <paulo@hp.com>
Reviewed-by: Ruiyu Ni <ruiyu.ni@intel.com>
This commit is contained in:
Paulo Alcantara 2017-09-23 02:11:32 +08:00 committed by Star Zeng
parent 264d16fcbf
commit baaa3cee1e
5 changed files with 626 additions and 588 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

372
MdeModulePkg/Universal/Disk/PartitionDxe/Udf.c
View File

@ -64,11 +64,12 @@ FindAnchorVolumeDescriptorPointer (
OUT UDF_ANCHOR_VOLUME_DESCRIPTOR_POINTER *AnchorPoint
)
{
EFI_STATUS Status;
UINT32 BlockSize;
EFI_LBA EndLBA;
EFI_LBA DescriptorLBAs[4];
UINTN Index;
EFI_STATUS Status;
UINT32 BlockSize;
EFI_LBA EndLBA;
EFI_LBA DescriptorLBAs[4];
UINTN Index;
UDF_DESCRIPTOR_TAG *DescriptorTag;
BlockSize = BlockIo->Media->BlockSize;
EndLBA = BlockIo->Media->LastBlock;
@ -88,10 +89,13 @@ FindAnchorVolumeDescriptorPointer (
if (EFI_ERROR (Status)) {
return Status;
}
DescriptorTag = &AnchorPoint->DescriptorTag;
//
// Check if read LBA has a valid AVDP descriptor.
//
if (IS_AVDP (AnchorPoint)) {
if (DescriptorTag->TagIdentifier == UdfAnchorVolumeDescriptorPointer) {
return EFI_SUCCESS;
}
}
@ -102,23 +106,18 @@ FindAnchorVolumeDescriptorPointer (
}
/**
Check if block device supports a valid UDF file system as specified by OSTA
Universal Disk Format Specification 2.60.
Find UDF volume identifiers in a Volume Recognition Sequence.
@param[in] BlockIo BlockIo interface.
@param[in] DiskIo DiskIo interface.
@param[in] BlockIo BlockIo interface.
@param[in] DiskIo DiskIo interface.
@retval EFI_SUCCESS UDF file system found.
@retval EFI_UNSUPPORTED UDF file system not found.
@retval EFI_NO_MEDIA The device has no media.
@retval EFI_DEVICE_ERROR The device reported an error.
@retval EFI_VOLUME_CORRUPTED The file system structures are corrupted.
@retval EFI_OUT_OF_RESOURCES The scan was not successful due to lack of
resources.
@retval EFI_SUCCESS UDF volume identifiers were found.
@retval EFI_NOT_FOUND UDF volume identifiers were not found.
@retval other Failed to perform disk I/O.
**/
EFI_STATUS
SupportUdfFileSystem (
FindUdfVolumeIdentifiers (
IN EFI_BLOCK_IO_PROTOCOL *BlockIo,
IN EFI_DISK_IO_PROTOCOL *DiskIo
)
@ -128,7 +127,6 @@ SupportUdfFileSystem (
UINT64 EndDiskOffset;
CDROM_VOLUME_DESCRIPTOR VolDescriptor;
CDROM_VOLUME_DESCRIPTOR TerminatingVolDescriptor;
UDF_ANCHOR_VOLUME_DESCRIPTOR_POINTER AnchorPoint;
ZeroMem ((VOID *)&TerminatingVolDescriptor, sizeof (CDROM_VOLUME_DESCRIPTOR));
@ -167,7 +165,7 @@ SupportUdfFileSystem (
(CompareMem ((VOID *)&VolDescriptor,
(VOID *)&TerminatingVolDescriptor,
sizeof (CDROM_VOLUME_DESCRIPTOR)) == 0)) {
return EFI_UNSUPPORTED;
return EFI_NOT_FOUND;
}
}
@ -176,7 +174,7 @@ SupportUdfFileSystem (
//
Offset += UDF_LOGICAL_SECTOR_SIZE;
if (Offset >= EndDiskOffset) {
return EFI_UNSUPPORTED;
return EFI_NOT_FOUND;
}
Status = DiskIo->ReadDisk (
@ -196,7 +194,7 @@ SupportUdfFileSystem (
(CompareMem ((VOID *)VolDescriptor.Unknown.Id,
(VOID *)UDF_NSR3_IDENTIFIER,
sizeof (VolDescriptor.Unknown.Id)) != 0)) {
return EFI_UNSUPPORTED;
return EFI_NOT_FOUND;
}
//
@ -204,7 +202,7 @@ SupportUdfFileSystem (
//
Offset += UDF_LOGICAL_SECTOR_SIZE;
if (Offset >= EndDiskOffset) {
return EFI_UNSUPPORTED;
return EFI_NOT_FOUND;
}
Status = DiskIo->ReadDisk (
@ -221,17 +219,293 @@ SupportUdfFileSystem (
if (CompareMem ((VOID *)VolDescriptor.Unknown.Id,
(VOID *)UDF_TEA_IDENTIFIER,
sizeof (VolDescriptor.Unknown.Id)) != 0) {
return EFI_UNSUPPORTED;
}
Status = FindAnchorVolumeDescriptorPointer (BlockIo, DiskIo, &AnchorPoint);
if (EFI_ERROR (Status)) {
return EFI_UNSUPPORTED;
return EFI_NOT_FOUND;
}
return EFI_SUCCESS;
}
/**
Check if Logical Volume Descriptor is supported by current EDK2 UDF file
system implementation.
@param[in] LogicalVolDesc Logical Volume Descriptor pointer.
@retval TRUE Logical Volume Descriptor is supported.
@retval FALSE Logical Volume Descriptor is not supported.
**/
BOOLEAN
IsLogicalVolumeDescriptorSupported (
UDF_LOGICAL_VOLUME_DESCRIPTOR *LogicalVolDesc
)
{
//
// Check for a valid UDF revision range
//
switch (LogicalVolDesc->DomainIdentifier.Suffix.Domain.UdfRevision) {
case 0x0102:
case 0x0150:
case 0x0200:
case 0x0201:
case 0x0250:
case 0x0260:
break;
default:
return FALSE;
}
//
// Check for a single Partition Map
//
if (LogicalVolDesc->NumberOfPartitionMaps > 1) {
return FALSE;
}
//
// UDF 1.02 revision supports only Type 1 (Physical) partitions, but
// let's check it any way.
//
// PartitionMap[0] -> type
// PartitionMap[1] -> length (in bytes)
//
if (LogicalVolDesc->PartitionMaps[0] != 1 ||
LogicalVolDesc->PartitionMaps[1] != 6) {
return FALSE;
}
return TRUE;
}
/**
Find UDF logical volume location and whether it is supported by current EDK2
UDF file system implementation.
@param[in] BlockIo BlockIo interface.
@param[in] DiskIo DiskIo interface.
@param[in] AnchorPoint Anchor volume descriptor pointer.
@param[out] MainVdsStartBlock Main VDS starting block number.
@param[out] MainVdsEndBlock Main VDS ending block number.
@retval EFI_SUCCESS UDF logical volume was found.
@retval EFI_VOLUME_CORRUPTED UDF file system structures are corrupted.
@retval EFI_UNSUPPORTED UDF logical volume is not supported.
@retval other Failed to perform disk I/O.
**/
EFI_STATUS
FindLogicalVolumeLocation (
IN EFI_BLOCK_IO_PROTOCOL *BlockIo,
IN EFI_DISK_IO_PROTOCOL *DiskIo,
IN UDF_ANCHOR_VOLUME_DESCRIPTOR_POINTER *AnchorPoint,
OUT UINT64 *MainVdsStartBlock,
OUT UINT64 *MainVdsEndBlock
)
{
EFI_STATUS Status;
UINT32 BlockSize;
EFI_LBA LastBlock;
UDF_EXTENT_AD *ExtentAd;
UINT64 SeqBlocksNum;
UINT64 SeqStartBlock;
UINT64 GuardMainVdsStartBlock;
VOID *Buffer;
UINT64 SeqEndBlock;
BOOLEAN StopSequence;
UINTN LvdsCount;
UDF_LOGICAL_VOLUME_DESCRIPTOR *LogicalVolDesc;
UDF_DESCRIPTOR_TAG *DescriptorTag;
BlockSize = BlockIo->Media->BlockSize;
LastBlock = BlockIo->Media->LastBlock;
ExtentAd = &AnchorPoint->MainVolumeDescriptorSequenceExtent;
//
// UDF 2.60, 2.2.3.1 struct MainVolumeDescriptorSequenceExtent
//
// The Main Volume Descriptor Sequence Extent shall have a minimum length of
// 16 logical sectors.
//
// Also make sure it does not exceed maximum number of blocks in the disk.
//
SeqBlocksNum = DivU64x32 ((UINT64)ExtentAd->ExtentLength, BlockSize);
if (SeqBlocksNum < 16 || (EFI_LBA)SeqBlocksNum > LastBlock + 1) {
return EFI_VOLUME_CORRUPTED;
}
//
// Check for valid Volume Descriptor Sequence starting block number
//
SeqStartBlock = (UINT64)ExtentAd->ExtentLocation;
if (SeqStartBlock > LastBlock ||
SeqStartBlock + SeqBlocksNum - 1 > LastBlock) {
return EFI_VOLUME_CORRUPTED;
}
GuardMainVdsStartBlock = SeqStartBlock;
//
// Allocate buffer for reading disk blocks
//
Buffer = AllocateZeroPool ((UINTN)BlockSize);
if (Buffer == NULL) {
return EFI_OUT_OF_RESOURCES;
}
SeqEndBlock = SeqStartBlock + SeqBlocksNum;
StopSequence = FALSE;
LvdsCount = 0;
Status = EFI_VOLUME_CORRUPTED;
//
// Start Main Volume Descriptor Sequence
//
for (; SeqStartBlock < SeqEndBlock && !StopSequence; SeqStartBlock++) {
//
// Read disk block
//
Status = BlockIo->ReadBlocks (
BlockIo,
BlockIo->Media->MediaId,
SeqStartBlock,
BlockSize,
Buffer
);
if (EFI_ERROR (Status)) {
goto Out_Free;
}
DescriptorTag = Buffer;
//
// ECMA 167, 8.4.1 Contents of a Volume Descriptor Sequence
//
// - A Volume Descriptor Sequence shall contain one or more Primary Volume
// Descriptors.
// - A Volume Descriptor Sequence shall contain zero or more Implementation
// Use Volume Descriptors.
// - A Volume Descriptor Sequence shall contain zero or more Partition
// Descriptors.
// - A Volume Descriptor Sequence shall contain zero or more Logical Volume
// Descriptors.
// - A Volume Descriptor Sequence shall contain zero or more Unallocated
// Space Descriptors.
//
switch (DescriptorTag->TagIdentifier) {
case UdfPrimaryVolumeDescriptor:
case UdfImplemenationUseVolumeDescriptor:
case UdfPartitionDescriptor:
case UdfUnallocatedSpaceDescriptor:
break;
case UdfLogicalVolumeDescriptor:
LogicalVolDesc = Buffer;
//
// Check for existence of a single LVD and whether it is supported by
// current EDK2 UDF file system implementation.
//
if (++LvdsCount > 1 ||
!IsLogicalVolumeDescriptorSupported (LogicalVolDesc)) {
Status = EFI_UNSUPPORTED;
StopSequence = TRUE;
}
break;
case UdfTerminatingDescriptor:
//
// Stop the sequence when we find a Terminating Descriptor
// (aka Unallocated Sector), se we don't have to walk all the unallocated
// area unnecessarily.
//
StopSequence = TRUE;
break;
default:
//
// An invalid Volume Descriptor has been found in the sequece. Volume is
// corrupted.
//
Status = EFI_VOLUME_CORRUPTED;
goto Out_Free;
}
}
//
// Check if LVD was found
//
if (!EFI_ERROR (Status) && LvdsCount == 1) {
*MainVdsStartBlock = GuardMainVdsStartBlock;
//
// We do not need to read either LVD or PD descriptors to know the last
// valid block in the found UDF file system. It's already LastBlock.
//
*MainVdsEndBlock = LastBlock;
Status = EFI_SUCCESS;
}
Out_Free:
//
// Free block read buffer
//
FreePool (Buffer);
return Status;
}
/**
Find a supported UDF file system in block device.
@param[in] BlockIo BlockIo interface.
@param[in] DiskIo DiskIo interface.
@param[out] StartingLBA UDF file system starting LBA.
@param[out] EndingLBA UDF file system starting LBA.
@retval EFI_SUCCESS UDF file system was found.
@retval other UDF file system was not found.
**/
EFI_STATUS
FindUdfFileSystem (
IN EFI_BLOCK_IO_PROTOCOL *BlockIo,
IN EFI_DISK_IO_PROTOCOL *DiskIo,
OUT EFI_LBA *StartingLBA,
OUT EFI_LBA *EndingLBA
)
{
EFI_STATUS Status;
UDF_ANCHOR_VOLUME_DESCRIPTOR_POINTER AnchorPoint;
//
// Find UDF volume identifiers
//
Status = FindUdfVolumeIdentifiers (BlockIo, DiskIo);
if (EFI_ERROR (Status)) {
return Status;
}
//
// Find Anchor Volume Descriptor Pointer
//
Status = FindAnchorVolumeDescriptorPointer (BlockIo, DiskIo, &AnchorPoint);
if (EFI_ERROR (Status)) {
return Status;
}
//
// Find Logical Volume location
//
Status = FindLogicalVolumeLocation (
BlockIo,
DiskIo,
&AnchorPoint,
(UINT64 *)StartingLBA,
(UINT64 *)EndingLBA
);
return Status;
}
/**
Install child handles if the Handle supports UDF/ECMA-167 volume format.
@ -263,9 +537,9 @@ PartitionInstallUdfChildHandles (
UINT32 RemainderByMediaBlockSize;
EFI_STATUS Status;
EFI_BLOCK_IO_MEDIA *Media;
EFI_DEVICE_PATH_PROTOCOL *DevicePathNode;
EFI_GUID *VendorDefinedGuid;
EFI_PARTITION_INFO_PROTOCOL PartitionInfo;
EFI_LBA StartingLBA;
EFI_LBA EndingLBA;
Media = BlockIo->Media;
@ -281,35 +555,10 @@ PartitionInstallUdfChildHandles (
return EFI_NOT_FOUND;
}
DevicePathNode = DevicePath;
while (!IsDevicePathEnd (DevicePathNode)) {
//
// Do not allow checking for UDF file systems in CDROM "El Torito"
// partitions, and skip duplicate installation of UDF file system child
// nodes.
//
if (DevicePathType (DevicePathNode) == MEDIA_DEVICE_PATH) {
if (DevicePathSubType (DevicePathNode) == MEDIA_CDROM_DP) {
return EFI_NOT_FOUND;
}
if (DevicePathSubType (DevicePathNode) == MEDIA_VENDOR_DP) {
VendorDefinedGuid = (EFI_GUID *)((UINTN)DevicePathNode +
OFFSET_OF (VENDOR_DEVICE_PATH, Guid));
if (CompareGuid (VendorDefinedGuid, &gUdfDevPathGuid)) {
return EFI_NOT_FOUND;
}
}
}
//
// Try next device path node
//
DevicePathNode = NextDevicePathNode (DevicePathNode);
}
//
// Check if block device supports an UDF file system
// Search for an UDF file system on block device
//
Status = SupportUdfFileSystem (BlockIo, DiskIo);
Status = FindUdfFileSystem (BlockIo, DiskIo, &StartingLBA, &EndingLBA);
if (EFI_ERROR (Status)) {
return EFI_NOT_FOUND;
}
@ -334,13 +583,10 @@ PartitionInstallUdfChildHandles (
DevicePath,
(EFI_DEVICE_PATH_PROTOCOL *)&gUdfDevicePath,
&PartitionInfo,
0,
Media->LastBlock,
StartingLBA,
EndingLBA,
Media->BlockSize
);
if (!EFI_ERROR (Status)) {
Status = EFI_NOT_FOUND;
}
return Status;
}

16
MdeModulePkg/Universal/Disk/UdfDxe/File.c
View File

@ -131,7 +131,6 @@ Error_Alloc_Priv_File_Data:
CleanupFileInformation (&PrivFsData->Root);
Error_Find_Root_Dir:
CleanupVolumeInformation (&PrivFsData->Volume);
Error_Read_Udf_Volume:
Error_Invalid_Params:
@ -429,7 +428,7 @@ UdfRead (
}
ASSERT (NewFileEntryData != NULL);
if (IS_FE_SYMLINK (NewFileEntryData)) {
if (FE_ICB_FILE_TYPE (NewFileEntryData) == UdfFileEntrySymlink) {
Status = ResolveSymlink (
BlockIo,
DiskIo,
@ -529,7 +528,6 @@ UdfClose (
EFI_TPL OldTpl;
EFI_STATUS Status;
PRIVATE_UDF_FILE_DATA *PrivFileData;
PRIVATE_UDF_SIMPLE_FS_DATA *PrivFsData;
OldTpl = gBS->RaiseTPL (TPL_CALLBACK);
@ -542,8 +540,6 @@ UdfClose (
PrivFileData = PRIVATE_UDF_FILE_DATA_FROM_THIS (This);
PrivFsData = PRIVATE_UDF_SIMPLE_FS_DATA_FROM_THIS (PrivFileData->SimpleFs);
if (!PrivFileData->IsRootDirectory) {
CleanupFileInformation (&PrivFileData->File);
@ -552,10 +548,6 @@ UdfClose (
}
}
if (--PrivFsData->OpenFiles == 0) {
CleanupVolumeInformation (&PrivFsData->Volume);
}
FreePool ((VOID *)PrivFileData);
Exit:
@ -652,7 +644,7 @@ UdfGetPosition (
// As per UEFI spec, if the file handle is a directory, then the current file
// position has no meaning and the operation is not supported.
//
if (IS_FID_DIRECTORY_FILE (&PrivFileData->File.FileIdentifierDesc)) {
if (IS_FID_DIRECTORY_FILE (PrivFileData->File.FileIdentifierDesc)) {
return EFI_UNSUPPORTED;
}
@ -788,7 +780,7 @@ UdfGetInfo (
} else if (CompareGuid (InformationType, &gEfiFileSystemInfoGuid)) {
String = VolumeLabel;
FileSetDesc = PrivFsData->Volume.FileSetDescs[0];
FileSetDesc = &PrivFsData->Volume.FileSetDesc;
OstaCompressed = &FileSetDesc->LogicalVolumeIdentifier[0];
@ -847,7 +839,7 @@ UdfGetInfo (
FileSystemInfo->Size = FileSystemInfoLength;
FileSystemInfo->ReadOnly = TRUE;
FileSystemInfo->BlockSize =
LV_BLOCK_SIZE (&PrivFsData->Volume, UDF_DEFAULT_LV_NUM);
PrivFsData->Volume.LogicalVolDesc.LogicalBlockSize;
FileSystemInfo->VolumeSize = VolumeSize;
FileSystemInfo->FreeSpace = FreeSpaceSize;

663
MdeModulePkg/Universal/Disk/UdfDxe/FileSystemOperations.c
View File

@ -38,11 +38,12 @@ FindAnchorVolumeDescriptorPointer (
OUT UDF_ANCHOR_VOLUME_DESCRIPTOR_POINTER *AnchorPoint
)
{
EFI_STATUS Status;
UINT32 BlockSize;
EFI_LBA EndLBA;
EFI_LBA DescriptorLBAs[4];
UINTN Index;
EFI_STATUS Status;
UINT32 BlockSize;
EFI_LBA EndLBA;
EFI_LBA DescriptorLBAs[4];
UINTN Index;
UDF_DESCRIPTOR_TAG *DescriptorTag;
BlockSize = BlockIo->Media->BlockSize;
EndLBA = BlockIo->Media->LastBlock;
@ -62,10 +63,13 @@ FindAnchorVolumeDescriptorPointer (
if (EFI_ERROR (Status)) {
return Status;
}
DescriptorTag = &AnchorPoint->DescriptorTag;
//
// Check if read LBA has a valid AVDP descriptor.
//
if (IS_AVDP (AnchorPoint)) {
if (DescriptorTag->TagIdentifier == UdfAnchorVolumeDescriptorPointer) {
return EFI_SUCCESS;
}
}
@ -99,148 +103,98 @@ StartMainVolumeDescriptorSequence (
OUT UDF_VOLUME_INFO *Volume
)
{
EFI_STATUS Status;
UINT32 BlockSize;
UDF_EXTENT_AD *ExtentAd;
UINT64 StartingLsn;
UINT64 EndingLsn;
VOID *Buffer;
UDF_LOGICAL_VOLUME_DESCRIPTOR *LogicalVolDesc;
UDF_PARTITION_DESCRIPTOR *PartitionDesc;
UINTN Index;
UINT32 LogicalBlockSize;
EFI_STATUS Status;
UINT32 BlockSize;
UDF_EXTENT_AD *ExtentAd;
EFI_LBA SeqStartBlock;
EFI_LBA SeqEndBlock;
BOOLEAN StopSequence;
VOID *Buffer;
UDF_DESCRIPTOR_TAG *DescriptorTag;
UINT32 LogicalBlockSize;
BlockSize = BlockIo->Media->BlockSize;
ExtentAd = &AnchorPoint->MainVolumeDescriptorSequenceExtent;
//
// We've already found an ADVP on the volume. It contains the extent
// (MainVolumeDescriptorSequenceExtent) where the Main Volume Descriptor
// Sequence starts. Therefore, we'll look for Logical Volume Descriptors and
// Partitions Descriptors and save them in memory, accordingly.
// Allocate buffer for reading disk blocks
//
// Note also that each descriptor will be aligned on a block size (BlockSize)
// boundary, so we need to read one block at a time.
//
BlockSize = BlockIo->Media->BlockSize;
ExtentAd = &AnchorPoint->MainVolumeDescriptorSequenceExtent;
StartingLsn = (UINT64)ExtentAd->ExtentLocation;
EndingLsn = StartingLsn + DivU64x32 (
(UINT64)ExtentAd->ExtentLength,
BlockSize
);
Volume->LogicalVolDescs =
(UDF_LOGICAL_VOLUME_DESCRIPTOR **)AllocateZeroPool (ExtentAd->ExtentLength);
if (Volume->LogicalVolDescs == NULL) {
Buffer = AllocateZeroPool ((UINTN)BlockSize);
if (Buffer == NULL) {
return EFI_OUT_OF_RESOURCES;
}
Volume->PartitionDescs =
(UDF_PARTITION_DESCRIPTOR **)AllocateZeroPool (ExtentAd->ExtentLength);
if (Volume->PartitionDescs == NULL) {
Status = EFI_OUT_OF_RESOURCES;
goto Error_Alloc_Pds;
}
Buffer = AllocateZeroPool (BlockSize);
if (Buffer == NULL) {
Status = EFI_OUT_OF_RESOURCES;
goto Error_Alloc_Buf;
}
Volume->LogicalVolDescsNo = 0;
Volume->PartitionDescsNo = 0;
while (StartingLsn <= EndingLsn) {
Status = DiskIo->ReadDisk (
DiskIo,
//
// The logical partition created by Partition driver is relative to the main
// VDS extent location, so we start the Main Volume Descriptor Sequence at
// LBA 0.
//
// We don't need to check again if we have valid Volume Descriptors here since
// Partition driver already did.
//
SeqStartBlock = 0;
SeqEndBlock = SeqStartBlock + DivU64x32 ((UINT64)ExtentAd->ExtentLength,
BlockSize);
StopSequence = FALSE;
for (; SeqStartBlock < SeqEndBlock && !StopSequence; SeqStartBlock++) {
//
// Read disk block
//
Status = BlockIo->ReadBlocks (
BlockIo,
BlockIo->Media->MediaId,
MultU64x32 (StartingLsn, BlockSize),
SeqStartBlock,
BlockSize,
Buffer
);
if (EFI_ERROR (Status)) {
goto Error_Read_Disk_Blk;
goto Out_Free;
}
if (IS_TD (Buffer)) {
DescriptorTag = Buffer;
switch (DescriptorTag->TagIdentifier) {
case UdfPartitionDescriptor:
//
// Found a Terminating Descriptor. Stop the sequence then.
// Save Partition Descriptor
//
CopyMem (&Volume->PartitionDesc, Buffer, sizeof (Volume->PartitionDesc));
break;
case UdfLogicalVolumeDescriptor:
//
// Save Logical Volume Descriptor
//
CopyMem (&Volume->LogicalVolDesc, Buffer, sizeof (Volume->LogicalVolDesc));
break;
case UdfTerminatingDescriptor:
StopSequence = TRUE;
break;
default:
;
}
if (IS_LVD (Buffer)) {
//
// Found a Logical Volume Descriptor.
//
LogicalVolDesc =
(UDF_LOGICAL_VOLUME_DESCRIPTOR *)
AllocateZeroPool (sizeof (UDF_LOGICAL_VOLUME_DESCRIPTOR));
if (LogicalVolDesc == NULL) {
Status = EFI_OUT_OF_RESOURCES;
goto Error_Alloc_Lvd;
}
CopyMem ((VOID *)LogicalVolDesc, Buffer,
sizeof (UDF_LOGICAL_VOLUME_DESCRIPTOR));
Volume->LogicalVolDescs[Volume->LogicalVolDescsNo++] = LogicalVolDesc;
} else if (IS_PD (Buffer)) {
//
// Found a Partition Descriptor.
//
PartitionDesc =
(UDF_PARTITION_DESCRIPTOR *)
AllocateZeroPool (sizeof (UDF_PARTITION_DESCRIPTOR));
if (PartitionDesc == NULL) {
Status = EFI_OUT_OF_RESOURCES;
goto Error_Alloc_Pd;
}
CopyMem ((VOID *)PartitionDesc, Buffer,
sizeof (UDF_PARTITION_DESCRIPTOR));
Volume->PartitionDescs[Volume->PartitionDescsNo++] = PartitionDesc;
}
StartingLsn++;
}
//
// When an UDF volume (revision 2.00 or higher) contains a File Entry rather
// than an Extended File Entry (which is not recommended as per spec), we need
// to make sure the size of a FE will be _at least_ 2048
// (UDF_LOGICAL_SECTOR_SIZE) bytes long to keep backward compatibility.
// Determine FE (File Entry) size
//
LogicalBlockSize = LV_BLOCK_SIZE (Volume, UDF_DEFAULT_LV_NUM);
LogicalBlockSize = Volume->LogicalVolDesc.LogicalBlockSize;
if (LogicalBlockSize >= UDF_LOGICAL_SECTOR_SIZE) {
Volume->FileEntrySize = LogicalBlockSize;
Volume->FileEntrySize = (UINTN)LogicalBlockSize;
} else {
Volume->FileEntrySize = UDF_LOGICAL_SECTOR_SIZE;
}
Status = EFI_SUCCESS;
Out_Free:
//
// Free block read buffer
//
FreePool (Buffer);
return EFI_SUCCESS;
Error_Alloc_Pd:
Error_Alloc_Lvd:
for (Index = 0; Index < Volume->PartitionDescsNo; Index++) {
FreePool ((VOID *)Volume->PartitionDescs[Index]);
}
for (Index = 0; Index < Volume->LogicalVolDescsNo; Index++) {
FreePool ((VOID *)Volume->LogicalVolDescs[Index]);
}
Error_Read_Disk_Blk:
FreePool (Buffer);
Error_Alloc_Buf:
FreePool ((VOID *)Volume->PartitionDescs);
Volume->PartitionDescs = NULL;
Error_Alloc_Pds:
FreePool ((VOID *)Volume->LogicalVolDescs);
Volume->LogicalVolDescs = NULL;
return Status;
}
@ -262,48 +216,53 @@ GetPdFromLongAd (
)
{
UDF_LOGICAL_VOLUME_DESCRIPTOR *LogicalVolDesc;
UINTN Index;
UDF_PARTITION_DESCRIPTOR *PartitionDesc;
UINT16 PartitionNum;
LogicalVolDesc = Volume->LogicalVolDescs[UDF_DEFAULT_LV_NUM];
LogicalVolDesc = &Volume->LogicalVolDesc;
switch (LV_UDF_REVISION (LogicalVolDesc)) {
switch (LogicalVolDesc->DomainIdentifier.Suffix.Domain.UdfRevision) {
case 0x0102:
case 0x0150:
case 0x0200:
case 0x0201:
case 0x0250:
case 0x0260:
//
// As per UDF 1.02 specification:
// UDF 1.02 specification:
//
// There shall be exactly one prevailing Logical Volume Descriptor recorded
// per Volume Set. The Partition Maps field shall contain only Type 1
// Partition Maps.
//
// UDF 1.50 through 2.60 specs say:
//
// For the purpose of interchange partition maps shall be limited to
// Partition Map type 1, except type 2 maps as described in the document.
//
// NOTE: Only one Type 1 (Physical) Partition is supported. It has been
// checked already in Partition driver for existence of a single Type 1
// Partition map, so we don't have to double check here.
//
// Partition reference number can also be retrieved from
// LongAd->ExtentLocation.PartitionReferenceNumber, however the spec says
// it may be 0, so let's not rely on it.
//
PartitionNum = *(UINT16 *)((UINTN)&LogicalVolDesc->PartitionMaps[4]);
break;
case 0x0150:
//
// Ensure Type 1 Partition map. Other types aren't supported in this
// implementation.
//
if (LogicalVolDesc->PartitionMaps[0] != 1 ||
LogicalVolDesc->PartitionMaps[1] != 6) {
return NULL;
}
PartitionNum = *(UINT16 *)((UINTN)&LogicalVolDesc->PartitionMaps[4]);
break;
case 0x0260:
//
// Fall through.
//
default:
PartitionNum = LongAd->ExtentLocation.PartitionReferenceNumber;
break;
//
// Unsupported UDF revision
//
return NULL;
}
for (Index = 0; Index < Volume->PartitionDescsNo; Index++) {
PartitionDesc = Volume->PartitionDescs[Index];
if (PartitionDesc->PartitionNumber == PartitionNum) {
return PartitionDesc;
}
//
// Check if partition number matches Partition Descriptor found in Main Volume
// Descriptor Sequence.
//
if (Volume->PartitionDesc.PartitionNumber == PartitionNum) {
return &Volume->PartitionDesc;
}
return NULL;
@ -329,13 +288,15 @@ GetLongAdLsn (
PartitionDesc = GetPdFromLongAd (Volume, LongAd);
ASSERT (PartitionDesc != NULL);
return (UINT64)PartitionDesc->PartitionStartingLocation +
LongAd->ExtentLocation.LogicalBlockNumber;
return (UINT64)PartitionDesc->PartitionStartingLocation -
Volume->MainVdsStartLocation +
LongAd->ExtentLocation.LogicalBlockNumber;
}
/**
Return logical sector number of a given Short Allocation Descriptor.
@param[in] Volume Volume pointer.
@param[in] PartitionDesc Partition Descriptor pointer.
@param[in] ShortAd Short Allocation Descriptor pointer.
@ -344,14 +305,13 @@ GetLongAdLsn (
**/
UINT64
GetShortAdLsn (
IN UDF_VOLUME_INFO *Volume,
IN UDF_PARTITION_DESCRIPTOR *PartitionDesc,
IN UDF_SHORT_ALLOCATION_DESCRIPTOR *ShortAd
)
{
ASSERT (PartitionDesc != NULL);
return (UINT64)PartitionDesc->PartitionStartingLocation +
ShortAd->ExtentPosition;
return (UINT64)PartitionDesc->PartitionStartingLocation -
Volume->MainVdsStartLocation + ShortAd->ExtentPosition;
}
/**
@ -363,8 +323,6 @@ GetShortAdLsn (
@param[in] BlockIo BlockIo interface.
@param[in] DiskIo DiskIo interface.
@param[in] Volume Volume information pointer.
@param[in] LogicalVolDescNum Index of Logical Volume Descriptor
@param[out] FileSetDesc File Set Descriptor pointer.
@retval EFI_SUCCESS File Set Descriptor pointer found.
@retval EFI_VOLUME_CORRUPTED The file system structures are corrupted.
@ -375,118 +333,48 @@ EFI_STATUS
FindFileSetDescriptor (
IN EFI_BLOCK_IO_PROTOCOL *BlockIo,
IN EFI_DISK_IO_PROTOCOL *DiskIo,
IN UDF_VOLUME_INFO *Volume,
IN UINTN LogicalVolDescNum,
OUT UDF_FILE_SET_DESCRIPTOR *FileSetDesc
IN UDF_VOLUME_INFO *Volume
)
{
EFI_STATUS Status;
UINT64 Lsn;
UDF_LOGICAL_VOLUME_DESCRIPTOR *LogicalVolDesc;
UDF_DESCRIPTOR_TAG *DescriptorTag;
LogicalVolDesc = Volume->LogicalVolDescs[LogicalVolDescNum];
LogicalVolDesc = &Volume->LogicalVolDesc;
Lsn = GetLongAdLsn (Volume, &LogicalVolDesc->LogicalVolumeContentsUse);
//
// Read extent (Long Ad).
// As per UDF 2.60 specification:
//
// There shall be exactly one File Set Descriptor recorded per Logical
// Volume.
//
// Read disk block
//
Status = DiskIo->ReadDisk (
DiskIo,
BlockIo->Media->MediaId,
MultU64x32 (Lsn, LogicalVolDesc->LogicalBlockSize),
sizeof (UDF_FILE_SET_DESCRIPTOR),
(VOID *)FileSetDesc
sizeof (Volume->FileSetDesc),
&Volume->FileSetDesc
);
if (EFI_ERROR (Status)) {
return Status;
}
DescriptorTag = &Volume->FileSetDesc.DescriptorTag;
//
// Check if the read extent contains a valid FSD's tag identifier.
// Check if read block is a File Set Descriptor
//
if (!IS_FSD (FileSetDesc)) {
if (DescriptorTag->TagIdentifier != UdfFileSetDescriptor) {
return EFI_VOLUME_CORRUPTED;
}
return EFI_SUCCESS;
}
/**
Get all File Set Descriptors for each Logical Volume Descriptor.
@param[in] BlockIo BlockIo interface.
@param[in] DiskIo DiskIo interface.
@param[in, out] Volume Volume information pointer.
@retval EFI_SUCCESS File Set Descriptors were got.
@retval EFI_OUT_OF_RESOURCES File Set Descriptors were not got due to lack
of resources.
@retval other Error occured when finding File Set
Descriptor in Logical Volume Descriptor.
**/
EFI_STATUS
GetFileSetDescriptors (
IN EFI_BLOCK_IO_PROTOCOL *BlockIo,
IN EFI_DISK_IO_PROTOCOL *DiskIo,
IN OUT UDF_VOLUME_INFO *Volume
)
{
EFI_STATUS Status;
UINTN Index;
UDF_FILE_SET_DESCRIPTOR *FileSetDesc;
UINTN Count;
Volume->FileSetDescs =
(UDF_FILE_SET_DESCRIPTOR **)AllocateZeroPool (
Volume->LogicalVolDescsNo * sizeof (UDF_FILE_SET_DESCRIPTOR));
if (Volume->FileSetDescs == NULL) {
return EFI_OUT_OF_RESOURCES;
}
for (Index = 0; Index < Volume->LogicalVolDescsNo; Index++) {
FileSetDesc = AllocateZeroPool (sizeof (UDF_FILE_SET_DESCRIPTOR));
if (FileSetDesc == NULL) {
Status = EFI_OUT_OF_RESOURCES;
goto Error_Alloc_Fsd;
}
//
// Find a FSD for this LVD.
//
Status = FindFileSetDescriptor (
BlockIo,
DiskIo,
Volume,
Index,
FileSetDesc
);
if (EFI_ERROR (Status)) {
goto Error_Find_Fsd;
}
//
// Got one. Save it.
//
Volume->FileSetDescs[Index] = FileSetDesc;
}
Volume->FileSetDescsNo = Volume->LogicalVolDescsNo;
return EFI_SUCCESS;
Error_Find_Fsd:
Count = Index + 1;
for (Index = 0; Index < Count; Index++) {
FreePool ((VOID *)Volume->FileSetDescs[Index]);
}
FreePool ((VOID *)Volume->FileSetDescs);
Volume->FileSetDescs = NULL;
Error_Alloc_Fsd:
return Status;
}
/**
Read Volume and File Structure on an UDF file system.
@ -507,9 +395,10 @@ ReadVolumeFileStructure (
{
EFI_STATUS Status;
UDF_ANCHOR_VOLUME_DESCRIPTOR_POINTER AnchorPoint;
UDF_EXTENT_AD *ExtentAd;
//
// Find an AVDP.
// Find Anchor Volume Descriptor Pointer
//
Status = FindAnchorVolumeDescriptorPointer (
BlockIo,
@ -521,7 +410,14 @@ ReadVolumeFileStructure (
}
//
// AVDP has been found. Start MVDS.
// Save Main VDS start block number
//
ExtentAd = &AnchorPoint.MainVolumeDescriptorSequenceExtent;
Volume->MainVdsStartLocation = (UINT64)ExtentAd->ExtentLocation;
//
// Start Main Volume Descriptor Sequence.
//
Status = StartMainVolumeDescriptorSequence (
BlockIo,
@ -620,16 +516,19 @@ GetFileEntryData (
OUT UINT64 *Length
)
{
UDF_DESCRIPTOR_TAG *DescriptorTag;
UDF_EXTENDED_FILE_ENTRY *ExtendedFileEntry;
UDF_FILE_ENTRY *FileEntry;
if (IS_EFE (FileEntryData)) {
DescriptorTag = FileEntryData;
if (DescriptorTag->TagIdentifier == UdfExtendedFileEntry) {
ExtendedFileEntry = (UDF_EXTENDED_FILE_ENTRY *)FileEntryData;
*Length = ExtendedFileEntry->InformationLength;
*Data = (VOID *)((UINT8 *)ExtendedFileEntry->Data +
ExtendedFileEntry->LengthOfExtendedAttributes);
} else if (IS_FE (FileEntryData)) {
} else if (DescriptorTag->TagIdentifier == UdfFileEntry) {
FileEntry = (UDF_FILE_ENTRY *)FileEntryData;
*Length = FileEntry->InformationLength;
@ -654,16 +553,19 @@ GetAdsInformation (
OUT UINT64 *Length
)
{
UDF_DESCRIPTOR_TAG *DescriptorTag;
UDF_EXTENDED_FILE_ENTRY *ExtendedFileEntry;
UDF_FILE_ENTRY *FileEntry;
if (IS_EFE (FileEntryData)) {
DescriptorTag = FileEntryData;
if (DescriptorTag->TagIdentifier == UdfExtendedFileEntry) {
ExtendedFileEntry = (UDF_EXTENDED_FILE_ENTRY *)FileEntryData;
*Length = ExtendedFileEntry->LengthOfAllocationDescriptors;
*AdsData = (VOID *)((UINT8 *)ExtendedFileEntry->Data +
ExtendedFileEntry->LengthOfExtendedAttributes);
} else if (IS_FE (FileEntryData)) {
} else if (DescriptorTag->TagIdentifier == UdfFileEntry) {
FileEntry = (UDF_FILE_ENTRY *)FileEntryData;
*Length = FileEntry->LengthOfAllocationDescriptors;
@ -850,6 +752,7 @@ GetAllocationDescriptorLsn (
return GetLongAdLsn (Volume, (UDF_LONG_ALLOCATION_DESCRIPTOR *)Ad);
} else if (RecordingFlags == ShortAdsSequence) {
return GetShortAdLsn (
Volume,
GetPdFromLongAd (Volume, ParentIcb),
(UDF_SHORT_ALLOCATION_DESCRIPTOR *)Ad
);
@ -897,6 +800,7 @@ GetAedAdsOffset (
VOID *Data;
UINT32 LogicalBlockSize;
UDF_ALLOCATION_EXTENT_DESCRIPTOR *AllocExtDesc;
UDF_DESCRIPTOR_TAG *DescriptorTag;
ExtentLength = GET_EXTENT_LENGTH (RecordingFlags, Ad);
Lsn = GetAllocationDescriptorLsn (RecordingFlags,
@ -909,7 +813,7 @@ GetAedAdsOffset (
return EFI_OUT_OF_RESOURCES;
}
LogicalBlockSize = LV_BLOCK_SIZE (Volume, UDF_DEFAULT_LV_NUM);
LogicalBlockSize = Volume->LogicalVolDesc.LogicalBlockSize;
//
// Read extent.
@ -925,11 +829,14 @@ GetAedAdsOffset (
goto Exit;
}
AllocExtDesc = (UDF_ALLOCATION_EXTENT_DESCRIPTOR *)Data;
DescriptorTag = &AllocExtDesc->DescriptorTag;
//
// Check if read extent contains a valid tag identifier for AED.
//
AllocExtDesc = (UDF_ALLOCATION_EXTENT_DESCRIPTOR *)Data;
if (!IS_AED (AllocExtDesc)) {
if (DescriptorTag->TagIdentifier != UdfAllocationExtentDescriptor) {
Status = EFI_VOLUME_CORRUPTED;
goto Exit;
}
@ -1102,7 +1009,7 @@ ReadFile (
UINT32 ExtentLength;
UDF_FE_RECORDING_FLAGS RecordingFlags;
LogicalBlockSize = LV_BLOCK_SIZE (Volume, UDF_DEFAULT_LV_NUM);
LogicalBlockSize = Volume->LogicalVolDesc.LogicalBlockSize;
DoFreeAed = FALSE;
//
@ -1444,7 +1351,7 @@ InternalFindFile (
//
// Check if parent file is really directory.
//
if (!IS_FE_DIRECTORY (Parent->FileEntry)) {
if (FE_ICB_FILE_TYPE (Parent->FileEntry) != UdfFileEntryDirectory) {
return EFI_NOT_FOUND;
}
@ -1489,7 +1396,7 @@ InternalFindFile (
break;
}
if (IS_FID_PARENT_FILE (FileIdentifierDesc)) {
if (FileIdentifierDesc->FileCharacteristics & PARENT_FILE) {
//
// This FID contains the location (FE/EFE) of the parent directory of this
// directory (Parent), and if FileName is either ".." or "\\", then it's
@ -1592,6 +1499,9 @@ ReadUdfVolumeInformation (
{
EFI_STATUS Status;
//
// Read all necessary UDF volume information and keep it private to the driver
//
Status = ReadVolumeFileStructure (
BlockIo,
DiskIo,
@ -1601,13 +1511,12 @@ ReadUdfVolumeInformation (
return Status;
}
Status = GetFileSetDescriptors (
BlockIo,
DiskIo,
Volume
);
//
// Find File Set Descriptor
//
Status = FindFileSetDescriptor (BlockIo, DiskIo, Volume);
if (EFI_ERROR (Status)) {
CleanupVolumeInformation (Volume);
return Status;
}
return Status;
@ -1644,7 +1553,7 @@ FindRootDirectory (
BlockIo,
DiskIo,
Volume,
&Volume->FileSetDescs[0]->RootDirectoryIcb,
&Volume->FileSetDesc.RootDirectoryIcb,
&File->FileEntry
);
if (EFI_ERROR (Status)) {
@ -1661,7 +1570,7 @@ FindRootDirectory (
L"\\",
NULL,
&Parent,
&Volume->FileSetDescs[0]->RootDirectoryIcb,
&Volume->FileSetDesc.RootDirectoryIcb,
File
);
if (EFI_ERROR (Status)) {
@ -1697,12 +1606,13 @@ FindFileEntry (
OUT VOID **FileEntry
)
{
EFI_STATUS Status;
UINT64 Lsn;
UINT32 LogicalBlockSize;
EFI_STATUS Status;
UINT64 Lsn;
UINT32 LogicalBlockSize;
UDF_DESCRIPTOR_TAG *DescriptorTag;
Lsn = GetLongAdLsn (Volume, Icb);
LogicalBlockSize = LV_BLOCK_SIZE (Volume, UDF_DEFAULT_LV_NUM);
LogicalBlockSize = Volume->LogicalVolDesc.LogicalBlockSize;
*FileEntry = AllocateZeroPool (Volume->FileEntrySize);
if (*FileEntry == NULL) {
@ -1723,11 +1633,14 @@ FindFileEntry (
goto Error_Read_Disk_Blk;
}
DescriptorTag = *FileEntry;
//
// Check if the read extent contains a valid Tag Identifier for the expected
// FE/EFE.
//
if (!IS_FE (*FileEntry) && !IS_EFE (*FileEntry)) {
if (DescriptorTag->TagIdentifier != UdfFileEntry &&
DescriptorTag->TagIdentifier != UdfExtendedFileEntry) {
Status = EFI_VOLUME_CORRUPTED;
goto Error_Invalid_Fe;
}
@ -1837,7 +1750,7 @@ FindFile (
// If the found file is a symlink, then find its respective FE/EFE and
// FID descriptors.
//
if (IS_FE_SYMLINK (File->FileEntry)) {
if (FE_ICB_FILE_TYPE (File->FileEntry) == UdfFileEntrySymlink) {
FreePool ((VOID *)File->FileIdentifierDesc);
FileEntry = File->FileEntry;
@ -1951,7 +1864,7 @@ ReadDirectoryEntry (
// Update FidOffset to point to next FID.
//
ReadDirInfo->FidOffset += GetFidDescriptorLength (FileIdentifierDesc);
} while (IS_FID_DELETED_FILE (FileIdentifierDesc));
} while (FileIdentifierDesc->FileCharacteristics & DELETED_FILE);
DuplicateFid (FileIdentifierDesc, FoundFid);
@ -2196,43 +2109,6 @@ Error_Find_File:
return Status;
}
/**
Clean up in-memory UDF volume information.
@param[in] Volume Volume information pointer.
**/
VOID
CleanupVolumeInformation (
IN UDF_VOLUME_INFO *Volume
)
{
UINTN Index;
if (Volume->LogicalVolDescs != NULL) {
for (Index = 0; Index < Volume->LogicalVolDescsNo; Index++) {
FreePool ((VOID *)Volume->LogicalVolDescs[Index]);
}
FreePool ((VOID *)Volume->LogicalVolDescs);
}
if (Volume->PartitionDescs != NULL) {
for (Index = 0; Index < Volume->PartitionDescsNo; Index++) {
FreePool ((VOID *)Volume->PartitionDescs[Index]);
}
FreePool ((VOID *)Volume->PartitionDescs);
}
if (Volume->FileSetDescs != NULL) {
for (Index = 0; Index < Volume->FileSetDescsNo; Index++) {
FreePool ((VOID *)Volume->FileSetDescs[Index]);
}
FreePool ((VOID *)Volume->FileSetDescs);
}
ZeroMem ((VOID *)Volume, sizeof (UDF_VOLUME_INFO));
}
/**
Clean up in-memory UDF file information.
@ -2333,6 +2209,7 @@ SetFileInfo (
EFI_FILE_INFO *FileInfo;
UDF_FILE_ENTRY *FileEntry;
UDF_EXTENDED_FILE_ENTRY *ExtendedFileEntry;
UDF_DESCRIPTOR_TAG *DescriptorTag;
//
// Calculate the needed size for the EFI_FILE_INFO structure.
@ -2367,7 +2244,9 @@ SetFileInfo (
FileInfo->Attribute |= EFI_FILE_HIDDEN;
}
if (IS_FE (File->FileEntry)) {
DescriptorTag = File->FileEntry;
if (DescriptorTag->TagIdentifier == UdfFileEntry) {
FileEntry = (UDF_FILE_ENTRY *)File->FileEntry;
//
@ -2403,7 +2282,7 @@ SetFileInfo (
FileEntry->AccessTime.Second;
FileInfo->LastAccessTime.Nanosecond =
FileEntry->AccessTime.HundredsOfMicroseconds;
} else if (IS_EFE (File->FileEntry)) {
} else if (DescriptorTag->TagIdentifier == UdfExtendedFileEntry) {
ExtendedFileEntry = (UDF_EXTENDED_FILE_ENTRY *)File->FileEntry;
//
@ -2487,91 +2366,103 @@ GetVolumeSize (
OUT UINT64 *FreeSpaceSize
)
{
UDF_EXTENT_AD ExtentAd;
UINT32 LogicalBlockSize;
UINT64 Lsn;
EFI_STATUS Status;
UDF_LOGICAL_VOLUME_INTEGRITY *LogicalVolInt;
UINTN Index;
UINTN Length;
UINT32 LsnsNo;
EFI_STATUS Status;
UDF_LOGICAL_VOLUME_DESCRIPTOR *LogicalVolDesc;
UDF_EXTENT_AD *ExtentAd;
UINT64 Lsn;
UINT32 LogicalBlockSize;
UDF_LOGICAL_VOLUME_INTEGRITY *LogicalVolInt;
UDF_DESCRIPTOR_TAG *DescriptorTag;
UINTN Index;
UINTN Length;
UINT32 LsnsNo;
*VolumeSize = 0;
*FreeSpaceSize = 0;
LogicalVolDesc = &Volume->LogicalVolDesc;
for (Index = 0; Index < Volume->LogicalVolDescsNo; Index++) {
CopyMem ((VOID *)&ExtentAd,
(VOID *)&Volume->LogicalVolDescs[Index]->IntegritySequenceExtent,
sizeof (UDF_EXTENT_AD));
if (ExtentAd.ExtentLength == 0) {
continue;
}
ExtentAd = &LogicalVolDesc->IntegritySequenceExtent;
LogicalBlockSize = LV_BLOCK_SIZE (Volume, Index);
Read_Next_Sequence:
LogicalVolInt = (UDF_LOGICAL_VOLUME_INTEGRITY *)
AllocatePool (ExtentAd.ExtentLength);
if (LogicalVolInt == NULL) {
return EFI_OUT_OF_RESOURCES;
}
Lsn = (UINT64)ExtentAd.ExtentLocation;
Status = DiskIo->ReadDisk (
DiskIo,
BlockIo->Media->MediaId,
MultU64x32 (Lsn, LogicalBlockSize),
ExtentAd.ExtentLength,
(VOID *)LogicalVolInt
);
if (EFI_ERROR (Status)) {
FreePool ((VOID *)LogicalVolInt);
return Status;
}
if (!IS_LVID (LogicalVolInt)) {
FreePool ((VOID *)LogicalVolInt);
return EFI_VOLUME_CORRUPTED;
}
Length = LogicalVolInt->NumberOfPartitions;
for (Index = 0; Index < Length; Index += sizeof (UINT32)) {
LsnsNo = *(UINT32 *)((UINT8 *)LogicalVolInt->Data + Index);
if (LsnsNo == 0xFFFFFFFFUL) {
//
// Size not specified.
//
continue;
}
*FreeSpaceSize += MultU64x32 ((UINT64)LsnsNo, LogicalBlockSize);
}
Length = (LogicalVolInt->NumberOfPartitions * sizeof (UINT32)) << 1;
for (; Index < Length; Index += sizeof (UINT32)) {
LsnsNo = *(UINT32 *)((UINT8 *)LogicalVolInt->Data + Index);
if (LsnsNo == 0xFFFFFFFFUL) {
//
// Size not specified.
//
continue;
}
*VolumeSize += MultU64x32 ((UINT64)LsnsNo, LogicalBlockSize);
}
CopyMem ((VOID *)&ExtentAd,(VOID *)&LogicalVolInt->NextIntegrityExtent,
sizeof (UDF_EXTENT_AD));
if (ExtentAd.ExtentLength > 0) {
FreePool ((VOID *)LogicalVolInt);
goto Read_Next_Sequence;
}
FreePool ((VOID *)LogicalVolInt);
if (ExtentAd->ExtentLength == 0) {
return EFI_VOLUME_CORRUPTED;
}
return EFI_SUCCESS;
LogicalVolInt = AllocatePool (ExtentAd->ExtentLength);
if (LogicalVolInt == NULL) {
return EFI_OUT_OF_RESOURCES;
}
//
// Get location of Logical Volume Integrity Descriptor
//
Lsn = (UINT64)ExtentAd->ExtentLocation - Volume->MainVdsStartLocation;
LogicalBlockSize = LogicalVolDesc->LogicalBlockSize;
//
// Read disk block
//
Status = DiskIo->ReadDisk (
DiskIo,
BlockIo->Media->MediaId,
MultU64x32 (Lsn, LogicalBlockSize),
ExtentAd->ExtentLength,
LogicalVolInt
);
if (EFI_ERROR (Status)) {
goto Out_Free;
}
DescriptorTag = &LogicalVolInt->DescriptorTag;
//
// Check if read block is a Logical Volume Integrity Descriptor
//
if (DescriptorTag->TagIdentifier != UdfLogicalVolumeIntegrityDescriptor) {
Status = EFI_VOLUME_CORRUPTED;
goto Out_Free;
}
*VolumeSize = 0;
*FreeSpaceSize = 0;
Length = LogicalVolInt->NumberOfPartitions;
for (Index = 0; Index < Length; Index += sizeof (UINT32)) {
LsnsNo = *(UINT32 *)((UINT8 *)LogicalVolInt->Data + Index);
//
// Check if size is not specified
//
if (LsnsNo == 0xFFFFFFFFUL) {
continue;
}
//
// Accumulate free space size
//
*FreeSpaceSize += MultU64x32 ((UINT64)LsnsNo, LogicalBlockSize);
}
Length = LogicalVolInt->NumberOfPartitions * sizeof (UINT32) * 2;
for (; Index < Length; Index += sizeof (UINT32)) {
LsnsNo = *(UINT32 *)((UINT8 *)LogicalVolInt->Data + Index);
//
// Check if size is not specified
//
if (LsnsNo == 0xFFFFFFFFUL) {
continue;
}
//
// Accumulate used volume space
//
*VolumeSize += MultU64x32 ((UINT64)LsnsNo, LogicalBlockSize);
}
Status = EFI_SUCCESS;
Out_Free:
//
// Free Logical Volume Integrity Descriptor
//
FreePool (LogicalVolInt);
return Status;
}
/**

7
MdeModulePkg/Universal/Disk/UdfDxe/Udf.c
View File

@ -276,13 +276,6 @@ UdfDriverBindingStop (
NULL
);
//
// Check if there's any open file. If so, clean them up.
//
if (PrivFsData->OpenFiles > 0) {
CleanupVolumeInformation (&PrivFsData->Volume);
}
FreePool ((VOID *)PrivFsData);
}

156
MdeModulePkg/Universal/Disk/UdfDxe/Udf.h
View File

@ -49,61 +49,34 @@
{ 0x89, 0x56, 0x73, 0xCD, 0xA3, 0x26, 0xCD, 0x0A } \
}
#define UDF_DEFAULT_LV_NUM 0
#define FE_ICB_FILE_TYPE(_Ptr) \
(UDF_FILE_ENTRY_TYPE)( \
((UDF_DESCRIPTOR_TAG *)(_Ptr))->TagIdentifier == UdfFileEntry ? \
((UDF_FILE_ENTRY *)(_Ptr))->IcbTag.FileType : \
((UDF_EXTENDED_FILE_ENTRY *)(_Ptr))->IcbTag.FileType)
#define IS_PVD(_Pointer) \
((BOOLEAN)(_GET_TAG_ID (_Pointer) == 1))
#define IS_PD(_Pointer) \
((BOOLEAN)(_GET_TAG_ID (_Pointer) == 5))
#define IS_LVD(_Pointer) \
((BOOLEAN)(_GET_TAG_ID (_Pointer) == 6))
#define IS_TD(_Pointer) \
((BOOLEAN)(_GET_TAG_ID (_Pointer) == 8))
#define IS_FSD(_Pointer) \
((BOOLEAN)(_GET_TAG_ID (_Pointer) == 256))
#define IS_FE(_Pointer) \
((BOOLEAN)(_GET_TAG_ID (_Pointer) == 261))
#define IS_EFE(_Pointer) \
((BOOLEAN)(_GET_TAG_ID (_Pointer) == 266))
#define IS_FID(_Pointer) \
((BOOLEAN)(_GET_TAG_ID (_Pointer) == 257))
#define IS_AED(_Pointer) \
((BOOLEAN)(_GET_TAG_ID (_Pointer) == 258))
#define IS_LVID(_Pointer) \
((BOOLEAN)(_GET_TAG_ID (_Pointer) == 9))
#define _GET_FILETYPE(_Pointer) \
(IS_FE (_Pointer) ? \
(((UDF_FILE_ENTRY *)(_Pointer))->IcbTag.FileType) \
: \
(((UDF_EXTENDED_FILE_ENTRY *)(_Pointer))->IcbTag.FileType))
#define IS_FE_DIRECTORY(_Pointer) \
((BOOLEAN)(_GET_FILETYPE (_Pointer) == 4))
#define IS_FE_STANDARD_FILE(_Pointer) \
((BOOLEAN)(_GET_FILETYPE (_Pointer) == 5))
#define IS_FE_SYMLINK(_Pointer) \
((BOOLEAN)(_GET_FILETYPE (_Pointer) == 12))
typedef enum {
UdfFileEntryDirectory = 4,
UdfFileEntryStandardFile = 5,
UdfFileEntrySymlink = 12,
} UDF_FILE_ENTRY_TYPE;
#define HIDDEN_FILE (1 << 0)
#define DIRECTORY_FILE (1 << 1)
#define DELETED_FILE (1 << 2)
#define PARENT_FILE (1 << 3)
#define _GET_FILE_CHARS(_Pointer) \
(((UDF_FILE_IDENTIFIER_DESCRIPTOR *)(_Pointer))->FileCharacteristics)
#define IS_FID_HIDDEN_FILE(_Pointer) \
((BOOLEAN)(_GET_FILE_CHARS (_Pointer) & HIDDEN_FILE))
#define IS_FID_DIRECTORY_FILE(_Pointer) \
((BOOLEAN)(_GET_FILE_CHARS (_Pointer) & DIRECTORY_FILE))
#define IS_FID_DELETED_FILE(_Pointer) \
((BOOLEAN)(_GET_FILE_CHARS (_Pointer) & DELETED_FILE))
#define IS_FID_PARENT_FILE(_Pointer) \
((BOOLEAN)(_GET_FILE_CHARS (_Pointer) & PARENT_FILE))
#define IS_FID_NORMAL_FILE(_Pointer) \
((BOOLEAN)(!IS_FID_DIRECTORY_FILE (_Pointer) && \
!IS_FID_PARENT_FILE (_Pointer)))
#define IS_FID_HIDDEN_FILE(_Fid) \
(BOOLEAN)((_Fid)->FileCharacteristics & HIDDEN_FILE)
#define IS_FID_DIRECTORY_FILE(_Fid) \
(BOOLEAN)((_Fid)->FileCharacteristics & DIRECTORY_FILE)
#define IS_FID_DELETED_FILE(_Fid) \
(BOOLEAN)((_Fid)->FileCharacteristics & DELETED_FILE)
#define IS_FID_PARENT_FILE(_Fid) \
(BOOLEAN)((_Fid)->FileCharacteristics & PARENT_FILE)
#define IS_FID_NORMAL_FILE(_Fid) \
(BOOLEAN)(!IS_FID_DIRECTORY_FILE (_Fid) && \
!IS_FID_PARENT_FILE (_Fid))
typedef enum {
ShortAdsSequence,
@ -152,14 +125,8 @@ typedef enum {
#define IS_VALID_COMPRESSION_ID(_CompId) \
((BOOLEAN)((_CompId) == 8 || (_CompId) == 16))
#define LV_BLOCK_SIZE(_Vol, _LvNum) \
(_Vol)->LogicalVolDescs[(_LvNum)]->LogicalBlockSize
#define UDF_STANDARD_IDENTIFIER_LENGTH 5
#define LV_UDF_REVISION(_Lv) \
*(UINT16 *)(UINTN)(_Lv)->DomainIdentifier.IdentifierSuffix
#pragma pack(1)
typedef struct {
@ -185,17 +152,6 @@ typedef struct {
#pragma pack(1)
typedef struct {
UINT8 CharacterSetType;
UINT8 CharacterSetInfo[63];
} UDF_CHAR_SPEC;
typedef struct {
UINT8 Flags;
UINT8 Identifier[23];
UINT8 IdentifierSuffix[8];
} UDF_ENTITY_ID;
typedef struct {
UINT16 TypeAndTimezone;
INT16 Year;
@ -209,17 +165,6 @@ typedef struct {
UINT8 Microseconds;
} UDF_TIMESTAMP;
typedef struct {
UINT32 LogicalBlockNumber;
UINT16 PartitionReferenceNumber;
} UDF_LB_ADDR;
typedef struct {
UINT32 ExtentLength;
UDF_LB_ADDR ExtentLocation;
UINT8 ImplementationUse[6];
} UDF_LONG_ALLOCATION_DESCRIPTOR;
typedef struct {
UDF_DESCRIPTOR_TAG DescriptorTag;
UINT32 PrevAllocationExtentDescriptor;
@ -234,6 +179,17 @@ typedef struct {
UINT8 StructureData[2040];
} UDF_VOLUME_DESCRIPTOR;
typedef struct {
UDF_DESCRIPTOR_TAG DescriptorTag;
UDF_TIMESTAMP RecordingDateTime;
UINT32 IntegrityType;
UDF_EXTENT_AD NextIntegrityExtent;
UINT8 LogicalVolumeContentsUse[32];
UINT32 NumberOfPartitions;
UINT32 LengthOfImplementationUse;
UINT8 Data[0];
} UDF_LOGICAL_VOLUME_INTEGRITY;
typedef struct {
UDF_DESCRIPTOR_TAG DescriptorTag;
UINT32 VolumeDescriptorSequenceNumber;
@ -249,33 +205,6 @@ typedef struct {
UINT8 Reserved[156];
} UDF_PARTITION_DESCRIPTOR;
typedef struct {
UDF_DESCRIPTOR_TAG DescriptorTag;
UINT32 VolumeDescriptorSequenceNumber;
UDF_CHAR_SPEC DescriptorCharacterSet;
UINT8 LogicalVolumeIdentifier[128];
UINT32 LogicalBlockSize;
UDF_ENTITY_ID DomainIdentifier;
UDF_LONG_ALLOCATION_DESCRIPTOR LogicalVolumeContentsUse;
UINT32 MapTableLength;
UINT32 NumberOfPartitionMaps;
UDF_ENTITY_ID ImplementationIdentifier;
UINT8 ImplementationUse[128];
UDF_EXTENT_AD IntegritySequenceExtent;
UINT8 PartitionMaps[6];
} UDF_LOGICAL_VOLUME_DESCRIPTOR;
typedef struct {
UDF_DESCRIPTOR_TAG DescriptorTag;
UDF_TIMESTAMP RecordingDateTime;
UINT32 IntegrityType;
UDF_EXTENT_AD NextIntegrityExtent;
UINT8 LogicalVolumeContentsUse[32];
UINT32 NumberOfPartitions;
UINT32 LengthOfImplementationUse;
UINT8 Data[0];
} UDF_LOGICAL_VOLUME_INTEGRITY;
typedef struct {
UDF_DESCRIPTOR_TAG DescriptorTag;
UDF_TIMESTAMP RecordingDateAndTime;
@ -389,12 +318,10 @@ typedef struct {
// UDF filesystem driver's private data
//
typedef struct {
UDF_LOGICAL_VOLUME_DESCRIPTOR **LogicalVolDescs;
UINTN LogicalVolDescsNo;
UDF_PARTITION_DESCRIPTOR **PartitionDescs;
UINTN PartitionDescsNo;
UDF_FILE_SET_DESCRIPTOR **FileSetDescs;
UINTN FileSetDescsNo;
UINT64 MainVdsStartLocation;
UDF_LOGICAL_VOLUME_DESCRIPTOR LogicalVolDesc;
UDF_PARTITION_DESCRIPTOR PartitionDesc;
UDF_FILE_SET_DESCRIPTOR FileSetDesc;
UINTN FileEntrySize;
} UDF_VOLUME_INFO;
@ -883,17 +810,6 @@ ResolveSymlink (
OUT UDF_FILE_INFO *File
);
/**
Clean up in-memory UDF volume information.
@param[in] Volume Volume information pointer.
**/
VOID
CleanupVolumeInformation (
IN UDF_VOLUME_INFO *Volume
);
/**
Clean up in-memory UDF file information.