OK I understood the reason now.
I tried to understand the relationship between AVDP, LVD, and PD, but failed.
The code below in Partition driver seems to say the LVD and PD are close to
each other.
Is it always true? If it is, I agree with the implementation.
//
// Cover the main VDS area so UdfDxe driver will also be able to get LVD and
// PD descriptors out from the file system.
//
*MainVdsStartLsn = GuardMainVdsStartLsn;
*LogicalVolEndLsn = *MainVdsStartLsn + (UINT64)ExtentAd->ExtentLength;
//
// Cover UDF partition area
//
*LogicalVolEndLsn +=
((UINT64)PartitionDesc->PartitionStartingLocation -
*LogicalVolEndLsn) + PartitionDesc->PartitionLength - 1;
Thanks/Ray
> -----Original Message-----
> From: Paulo Alcantara [mailto:pca...@zytor.com]
> Sent: Tuesday, September 19, 2017 12:51 AM
> To: Ni, Ruiyu <ruiyu...@intel.com>; edk2-devel@lists.01.org
> Cc: Dong, Eric <eric.d...@intel.com>; Zeng, Star <star.z...@intel.com>;
> Laszlo Ersek <ler...@redhat.com>
> Subject: Re: [PATCH v2 3/3] MdeModulePkg/UdfDxe: Rework driver to
> support PartitionDxe changes
>
>
>
> On 9/17/2017 10:00 PM, Ni, Ruiyu wrote:
> > Paulo,
> > With the change in partition driver, I suppose UdfDxe driver only
> > needs to take care of area covered by the partition descriptor.
> > But why StartMainVolumeDescriptorSequence() still reads LVD, TD, and
> > PD?
>
> We still need the LVD again for a few reasons:
>
> 1. GetVolumeSize() needs to read LVID (Logical Volume Integrity Descriptor),
> which is located in LVD, in order to calculate free and used volume space.
> 2. To find FSD (File Set Descriptor), where the root directory is located.
> 3. To know which Partition Descriptor to use based on partition number from
> LVD->PartitionMaps field. I know UDF 2.60 spec says that there should be
> only one Partition Descriptor that covers the entire space of a single LVD,
> but
> it's good to make sure we're reading it correctly.
>
> TD descriptor is used to know when stopping the Volume Descriptor
> Sequence and then we don't need to read all ExtentAd->ExtentLength blocks
> unnecessarily.
>
> Thanks,
> Paulo
>
> >
> > I thought the UdfDxe driver's logic can be simplified a lot.
> > There should be no duplicated logic in Partition driver and udf driver.
> >
> > Can you explain more?
> >
> > Thanks/Ray
> >
> >> -----Original Message-----
> >> From: Paulo Alcantara [mailto:pca...@zytor.com]
> >> Sent: Sunday, September 17, 2017 9:13 PM
> >> To: edk2-devel@lists.01.org
> >> Cc: Paulo Alcantara <pca...@zytor.com>; Dong, Eric
> >> <eric.d...@intel.com>; Ni, Ruiyu <ruiyu...@intel.com>; Zeng, Star
> >> <star.z...@intel.com>; Laszlo Ersek <ler...@redhat.com>
> >> Subject: [PATCH v2 3/3] MdeModulePkg/UdfDxe: Rework driver to
> support
> >> PartitionDxe changes
> >>
> >> This patch reworks the driver to support Partition driver changes.
> >>
> >> Cc: Eric Dong <eric.d...@intel.com>
> >> Cc: Paulo Alcantara <pca...@zytor.com>
> >> Cc: Ruiyu Ni <ruiyu...@intel.com>
> >> Cc: Star Zeng <star.z...@intel.com>
> >> Cc: Laszlo Ersek <ler...@redhat.com>
> >> Contributed-under: TianoCore Contribution Agreement 1.1
> >> Signed-off-by: Paulo Alcantara <pca...@zytor.com>
> >> ---
> >> MdeModulePkg/Universal/Disk/UdfDxe/File.c | 13 +-
> >> MdeModulePkg/Universal/Disk/UdfDxe/FileSystemOperations.c | 515
> >> ++++++++------------
> >> MdeModulePkg/Universal/Disk/UdfDxe/Udf.c | 7 -
> >> MdeModulePkg/Universal/Disk/UdfDxe/Udf.h | 88 +---
> >> 4 files changed, 204 insertions(+), 419 deletions(-)
> >>
> >> diff --git a/MdeModulePkg/Universal/Disk/UdfDxe/File.c
> >> b/MdeModulePkg/Universal/Disk/UdfDxe/File.c
> >> index 01361141bb..f2c62967e8 100644
> >> --- a/MdeModulePkg/Universal/Disk/UdfDxe/File.c
> >> +++ b/MdeModulePkg/Universal/Disk/UdfDxe/File.c
> >> @@ -100,6 +100,7 @@ UdfOpenVolume (
> >> &PrivFsData->Volume,
> >> &PrivFsData->Root
> >> );
> >> + ASSERT_EFI_ERROR (Status);
> >> if (EFI_ERROR (Status)) {
> >> goto Error_Find_Root_Dir;
> >> }
> >> @@ -131,7 +132,6 @@ Error_Alloc_Priv_File_Data:
> >> CleanupFileInformation (&PrivFsData->Root);
> >>
> >> Error_Find_Root_Dir:
> >> - CleanupVolumeInformation (&PrivFsData->Volume);
> >>
> >> Error_Read_Udf_Volume:
> >> Error_Invalid_Params:
> >> @@ -528,7 +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);
> >>
> >> @@ -541,8 +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);
> >>
> >> @@ -551,10 +548,6 @@ UdfClose (
> >> }
> >> }
> >>
> >> - if (--PrivFsData->OpenFiles == 0) {
> >> - CleanupVolumeInformation (&PrivFsData->Volume);
> >> - }
> >> -
> >> FreePool ((VOID *)PrivFileData);
> >>
> >> Exit:
> >> @@ -787,7 +780,7 @@ UdfGetInfo (
> >> } else if (CompareGuid (InformationType, &gEfiFileSystemInfoGuid)) {
> >> String = VolumeLabel;
> >>
> >> - FileSetDesc = PrivFsData->Volume.FileSetDescs[0];
> >> + FileSetDesc = &PrivFsData->Volume.FileSetDesc;
> >>
> >> OstaCompressed = &FileSetDesc->LogicalVolumeIdentifier[0];
> >>
> >> @@ -846,7 +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;
> >>
> >> diff --git
> >> a/MdeModulePkg/Universal/Disk/UdfDxe/FileSystemOperations.c
> >> b/MdeModulePkg/Universal/Disk/UdfDxe/FileSystemOperations.c
> >> index 4609580b30..63b643e60a 100644
> >> --- a/MdeModulePkg/Universal/Disk/UdfDxe/FileSystemOperations.c
> >> +++ b/MdeModulePkg/Universal/Disk/UdfDxe/FileSystemOperations.c
> >> @@ -60,154 +60,111 @@ FindAnchorVolumeDescriptorPointer (
> >>
> >> EFI_STATUS
> >> StartMainVolumeDescriptorSequence (
> >> - IN EFI_BLOCK_IO_PROTOCOL *BlockIo,
> >> - IN EFI_DISK_IO_PROTOCOL *DiskIo,
> >> - IN UDF_ANCHOR_VOLUME_DESCRIPTOR_POINTER *AnchorPoint,
> >> - OUT UDF_VOLUME_INFO *Volume
> >> + IN EFI_BLOCK_IO_PROTOCOL *BlockIo,
> >> + IN EFI_DISK_IO_PROTOCOL *DiskIo,
> >> + 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;
> >> + UINT64 BlockOffset;
> >> + VOID *Buffer;
> >> + UINT32 LogicalBlockSize;
> >> +
> >> + BlockSize = BlockIo->Media->BlockSize;
> >>
> >> //
> >> - // 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.
> >> - //
> >> - // Note also that each descriptor will be aligned on a block size
> >> (BlockSize)
> >> - // boundary, so we need to read one block at a time.
> >> + // Allocate buffer for reading disk blocks
> >> //
> >> - 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) {
> >> - 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);
> >> + Buffer = AllocateZeroPool ((UINTN)BlockSize);
> >> if (Buffer == NULL) {
> >> - Status = EFI_OUT_OF_RESOURCES;
> >> - goto Error_Alloc_Buf;
> >> + return EFI_OUT_OF_RESOURCES;
> >> }
> >>
> >> - Volume->LogicalVolDescsNo = 0;
> >> - Volume->PartitionDescsNo = 0;
> >> -
> >> - while (StartingLsn <= EndingLsn) {
> >> + //
> >> + // As per UDF 2.60 specification:
> >> + //
> >> + // ---
> >> + // For the purpose of interchange, Partition Maps shall be limited
> >> + to // Partition Map type 1, except type 2 maps.
> >> + // ---
> >> + // A Partition Descriptor Access Type of read-only, rewritable,
> >> + // overwritable, write-once and pseudo-overwritable shall be //
> >> + supported. There shall be exactly one prevailing Partition //
> >> + Descriptor recorded per volume, with one exception. For Volume //
> >> + Sets that consist of single volume, the volume may contain 2 non-
> >> + // overlapping Partitions with 2 prevailing Partition Descriptors
> >> + only // if one has an Access Type of read-only and the other has an
> >> + // Access Type of rewritable, overwritable, or write-once. The //
> >> + Logical Volume for this volume would consist of the contents of //
> >> + both partitions.
> >> + // ---
> >> + //
> >> + // 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 make sure we got both LVD and PD -- that is,
> >> + if we are // here, that means Partition driver was able to find
> >> + them both
> >> previously.
> >> + //
> >> + for (BlockOffset = 0;
> >> + BlockOffset < MultU64x32 (BlockIo->Media->LastBlock,
> >> + BlockIo->Media->BlockSize);
> >> + BlockOffset += BlockSize) {
> >> + // Read disk block
> >> + //
> >> Status = DiskIo->ReadDisk (
> >> DiskIo,
> >> BlockIo->Media->MediaId,
> >> - MultU64x32 (StartingLsn, BlockSize),
> >> + BlockOffset,
> >> BlockSize,
> >> Buffer
> >> );
> >> if (EFI_ERROR (Status)) {
> >> - goto Error_Read_Disk_Blk;
> >> + goto Out_Free;
> >> }
> >>
> >> + //
> >> + // Check if read block is a Terminating Descriptor
> >> + //
> >> if (IS_TD (Buffer)) {
> >> //
> >> - // Found a Terminating Descriptor. Stop the sequence then.
> >> + // Terminate Main Volume Descriptor Sequence
> >> //
> >> break;
> >> }
> >>
> >> if (IS_LVD (Buffer)) {
> >> //
> >> - // Found a Logical Volume Descriptor.
> >> + // Save 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;
> >> + CopyMem (&Volume->LogicalVolDesc, Buffer, sizeof
> >> + (Volume->LogicalVolDesc));
> >> } else if (IS_PD (Buffer)) {
> >> //
> >> - // Found a Partition Descriptor.
> >> + // Save 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;
> >> + CopyMem (&Volume->PartitionDesc, Buffer, sizeof
> >> + (Volume->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;
> >> }
> >>
> >> - 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]);
> >> - }
> >> + Status = EFI_SUCCESS;
> >>
> >> -Error_Read_Disk_Blk:
> >> +Out_Free:
> >> + //
> >> + // Free block read buffer
> >> + //
> >> FreePool (Buffer);
> >>
> >> -Error_Alloc_Buf:
> >> - FreePool ((VOID *)Volume->PartitionDescs);
> >> - Volume->PartitionDescs = NULL;
> >> -
> >> -Error_Alloc_Pds:
> >> - FreePool ((VOID *)Volume->LogicalVolDescs);
> >> - Volume->LogicalVolDescs = NULL;
> >> -
> >> return Status;
> >> }
> >>
> >> @@ -223,11 +180,9 @@ 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)) {
> >> case 0x0102:
> >> @@ -252,19 +207,21 @@ GetPdFromLongAd (
> >> PartitionNum = *(UINT16 *)((UINTN)&LogicalVolDesc-
> >PartitionMaps[4]);
> >> break;
> >> case 0x0260:
> >> - //
> >> - // Fall through.
> >> - //
> >> - default:
> >> PartitionNum = LongAd->ExtentLocation.PartitionReferenceNumber;
> >> break;
> >> + default:
> >> + //
> >> + // Unhandled 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;
> >> @@ -284,8 +241,9 @@ GetLongAdLsn (
> >> PartitionDesc = GetPdFromLongAd (Volume, LongAd);
> >> ASSERT (PartitionDesc != NULL);
> >>
> >> - return (UINT64)PartitionDesc->PartitionStartingLocation +
> >> - LongAd->ExtentLocation.LogicalBlockNumber;
> >> + return (UINT64)PartitionDesc->PartitionStartingLocation -
> >> + Volume->MainVdsStartLocation +
> >> + LongAd->ExtentLocation.LogicalBlockNumber;
> >> }
> >>
> >> //
> >> @@ -293,12 +251,13 @@ GetLongAdLsn (
> >> //
> >> UINT64
> >> GetShortAdLsn (
> >> + IN UDF_VOLUME_INFO *Volume,
> >> IN UDF_PARTITION_DESCRIPTOR *PartitionDesc,
> >> IN UDF_SHORT_ALLOCATION_DESCRIPTOR *ShortAd
> >> )
> >> {
> >> - return (UINT64)PartitionDesc->PartitionStartingLocation +
> >> - ShortAd->ExtentPosition;
> >> + return (UINT64)PartitionDesc->PartitionStartingLocation -
> >> + Volume->MainVdsStartLocation + ShortAd->ExtentPosition;
> >> }
> >>
> >> //
> >> @@ -311,36 +270,39 @@ 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;
> >>
> >> - 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;
> >> }
> >>
> >> //
> >> - // 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 (!IS_FSD (&Volume->FileSetDesc)) {
> >> return EFI_VOLUME_CORRUPTED;
> >> }
> >>
> >> @@ -348,71 +310,6 @@ FindFileSetDescriptor ( }
> >>
> >> //
> >> -// Get all File Set Descriptors for each 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.
> >> //
> >> EFI_STATUS
> >> @@ -424,9 +321,10 @@ 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,
> >> @@ -438,12 +336,18 @@ 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,
> >> DiskIo,
> >> - &AnchorPoint,
> >> Volume
> >> );
> >> if (EFI_ERROR (Status)) {
> >> @@ -699,6 +603,7 @@ GetAllocationDescriptorLsn (
> >> return GetLongAdLsn (Volume,
> (UDF_LONG_ALLOCATION_DESCRIPTOR
> >> *)Ad);
> >> } else if (RecordingFlags == SHORT_ADS_SEQUENCE) {
> >> return GetShortAdLsn (
> >> + Volume,
> >> GetPdFromLongAd (Volume, ParentIcb),
> >> (UDF_SHORT_ALLOCATION_DESCRIPTOR *)Ad
> >> );
> >> @@ -740,7 +645,7 @@ GetAedAdsOffset (
> >> return EFI_OUT_OF_RESOURCES;
> >> }
> >>
> >> - LogicalBlockSize = LV_BLOCK_SIZE (Volume, UDF_DEFAULT_LV_NUM);
> >> + LogicalBlockSize = Volume->LogicalVolDesc.LogicalBlockSize;
> >>
> >> //
> >> // Read extent.
> >> @@ -890,7 +795,7 @@ ReadFile (
> >> UINT32 ExtentLength;
> >> UDF_FE_RECORDING_FLAGS RecordingFlags;
> >>
> >> - LogicalBlockSize = LV_BLOCK_SIZE (Volume, UDF_DEFAULT_LV_NUM);
> >> + LogicalBlockSize = Volume->LogicalVolDesc.LogicalBlockSize;
> >> DoFreeAed = FALSE;
> >>
> >> //
> >> @@ -1355,6 +1260,9 @@ ReadUdfVolumeInformation ( {
> >> EFI_STATUS Status;
> >>
> >> + //
> >> + // Read all necessary UDF volume information and keep it private
> >> + to the driver //
> >> Status = ReadVolumeFileStructure (
> >> BlockIo,
> >> DiskIo,
> >> @@ -1364,13 +1272,12 @@ 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;
> >> @@ -1407,7 +1314,7 @@ FindRootDirectory (
> >> BlockIo,
> >> DiskIo,
> >> Volume,
> >> - &Volume->FileSetDescs[0]->RootDirectoryIcb,
> >> + &Volume->FileSetDesc.RootDirectoryIcb,
> >> &File->FileEntry
> >> );
> >> if (EFI_ERROR (Status)) {
> >> @@ -1424,7 +1331,7 @@ FindRootDirectory (
> >> L"\\",
> >> NULL,
> >> &Parent,
> >> - &Volume->FileSetDescs[0]->RootDirectoryIcb,
> >> + &Volume->FileSetDesc.RootDirectoryIcb,
> >> File
> >> );
> >> if (EFI_ERROR (Status)) {
> >> @@ -1465,7 +1372,7 @@ FindFileEntry (
> >> UINT32 LogicalBlockSize;
> >>
> >> Lsn = GetLongAdLsn (Volume, Icb);
> >> - LogicalBlockSize = LV_BLOCK_SIZE (Volume, UDF_DEFAULT_LV_NUM);
> >> + LogicalBlockSize = Volume->LogicalVolDesc.LogicalBlockSize;
> >>
> >> *FileEntry = AllocateZeroPool (Volume->FileEntrySize);
> >> if (*FileEntry == NULL) {
> >> @@ -1959,43 +1866,6 @@ Error_Find_File:
> >> }
> >>
> >> /**
> >> - 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.
> >>
> >> @param[in] File File information pointer.
> >> @@ -2249,91 +2119,100 @@ 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;
> >> -
> >> - *VolumeSize = 0;
> >> - *FreeSpaceSize = 0;
> >> -
> >> - for (Index = 0; Index < Volume->LogicalVolDescsNo; Index++) {
> >> - CopyMem ((VOID *)&ExtentAd,
> >> - (VOID *)&Volume->LogicalVolDescs[Index]-
> >>> IntegritySequenceExtent,
> >> - sizeof (UDF_EXTENT_AD));
> >> - if (ExtentAd.ExtentLength == 0) {
> >> - continue;
> >> - }
> >> + EFI_STATUS Status;
> >> + UDF_LOGICAL_VOLUME_DESCRIPTOR *LogicalVolDesc;
> >> + UDF_EXTENT_AD *ExtentAd;
> >> + UINT64 Lsn;
> >> + UINT32 LogicalBlockSize;
> >> + UDF_LOGICAL_VOLUME_INTEGRITY *LogicalVolInt;
> >> + UINTN Index;
> >> + UINTN Length;
> >> + UINT32 LsnsNo;
> >>
> >> - LogicalBlockSize = LV_BLOCK_SIZE (Volume, Index);
> >> + LogicalVolDesc = &Volume->LogicalVolDesc;
> >>
> >> - Read_Next_Sequence:
> >> - LogicalVolInt = (UDF_LOGICAL_VOLUME_INTEGRITY *)
> >> - AllocatePool (ExtentAd.ExtentLength);
> >> - if (LogicalVolInt == NULL) {
> >> - return EFI_OUT_OF_RESOURCES;
> >> - }
> >> + ExtentAd = &LogicalVolDesc->IntegritySequenceExtent;
> >>
> >> - Lsn = (UINT64)ExtentAd.ExtentLocation;
> >> + if (ExtentAd->ExtentLength == 0) {
> >> + return EFI_VOLUME_CORRUPTED;
> >> + }
> >>
> >> - Status = DiskIo->ReadDisk (
> >> - DiskIo,
> >> - BlockIo->Media->MediaId,
> >> - MultU64x32 (Lsn, LogicalBlockSize),
> >> - ExtentAd.ExtentLength,
> >> - (VOID *)LogicalVolInt
> >> - );
> >> - if (EFI_ERROR (Status)) {
> >> - FreePool ((VOID *)LogicalVolInt);
> >> - return Status;
> >> - }
> >> + LogicalVolInt = AllocatePool (ExtentAd->ExtentLength); if
> >> + (LogicalVolInt == NULL) {
> >> + return EFI_OUT_OF_RESOURCES;
> >> + }
> >>
> >> - if (!IS_LVID (LogicalVolInt)) {
> >> - FreePool ((VOID *)LogicalVolInt);
> >> - return EFI_VOLUME_CORRUPTED;
> >> - }
> >> + //
> >> + // Get location of Logical Volume Integrity Descriptor // Lsn =
> >> + (UINT64)ExtentAd->ExtentLocation - Volume->MainVdsStartLocation;
> >>
> >> - Length = LogicalVolInt->NumberOfPartitions;
> >> - for (Index = 0; Index < Length; Index += sizeof (UINT32)) {
> >> - LsnsNo = *(UINT32 *)((UINT8 *)LogicalVolInt->Data + Index);
> >> - if (LsnsNo == 0xFFFFFFFFUL) {
> >> - //
> >> - // Size not specified.
> >> - //
> >> - continue;
> >> - }
> >> + LogicalBlockSize = LogicalVolDesc->LogicalBlockSize;
> >>
> >> - *FreeSpaceSize += MultU64x32 ((UINT64)LsnsNo, LogicalBlockSize);
> >> - }
> >> + //
> >> + // Read disk block
> >> + //
> >> + Status = DiskIo->ReadDisk (
> >> + DiskIo,
> >> + BlockIo->Media->MediaId,
> >> + MultU64x32 (Lsn, LogicalBlockSize),
> >> + ExtentAd->ExtentLength,
> >> + LogicalVolInt
> >> + );
> >> + if (EFI_ERROR (Status)) {
> >> + goto Out_Free;
> >> + }
> >>
> >> - 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;
> >> - }
> >> + //
> >> + // Check if read block is a Logical Volume Integrity Descriptor
> >> + // if (!IS_LVID (LogicalVolInt)) {
> >> + Status = EFI_VOLUME_CORRUPTED;
> >> + goto Out_Free;
> >> + }
> >>
> >> - *VolumeSize += MultU64x32 ((UINT64)LsnsNo, LogicalBlockSize);
> >> - }
> >> + *VolumeSize = 0;
> >> + *FreeSpaceSize = 0;
> >>
> >> - CopyMem ((VOID *)&ExtentAd,(VOID *)&LogicalVolInt-
> >>> NextIntegrityExtent,
> >> - sizeof (UDF_EXTENT_AD));
> >> - if (ExtentAd.ExtentLength > 0) {
> >> - FreePool ((VOID *)LogicalVolInt);
> >> - goto Read_Next_Sequence;
> >> + 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);
> >> + }
> >>
> >> - FreePool ((VOID *)LogicalVolInt);
> >> + 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);
> >> }
> >>
> >> - return EFI_SUCCESS;
> >> + Status = EFI_SUCCESS;
> >> +
> >> +Out_Free:
> >> + //
> >> + // Free Logical Volume Integrity Descriptor
> >> + //
> >> + FreePool (LogicalVolInt);
> >> +
> >> + return Status;
> >> }
> >>
> >> /**
> >> diff --git a/MdeModulePkg/Universal/Disk/UdfDxe/Udf.c
> >> b/MdeModulePkg/Universal/Disk/UdfDxe/Udf.c
> >> index 49dc7077b7..d4163b89ca 100644
> >> --- a/MdeModulePkg/Universal/Disk/UdfDxe/Udf.c
> >> +++ b/MdeModulePkg/Universal/Disk/UdfDxe/Udf.c
> >> @@ -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);
> >> }
> >>
> >> diff --git a/MdeModulePkg/Universal/Disk/UdfDxe/Udf.h
> >> b/MdeModulePkg/Universal/Disk/UdfDxe/Udf.h
> >> index 240d420ff5..c5f83914d8 100644
> >> --- a/MdeModulePkg/Universal/Disk/UdfDxe/Udf.h
> >> +++ b/MdeModulePkg/Universal/Disk/UdfDxe/Udf.h
> >> @@ -49,16 +49,8 @@
> >> { 0x89, 0x56, 0x73, 0xCD, 0xA3, 0x26, 0xCD, 0x0A } \
> >> }
> >>
> >> -#define UDF_DEFAULT_LV_NUM 0
> >> -
> >> #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) \ @@ -152,14 +144,8 @@ 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 {
> >> @@ -186,17 +172,6 @@ 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;
> >> UINT8 Month;
> >> @@ -210,17 +185,6 @@ typedef struct {
> >> } 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;
> >> UINT32 LengthOfAllocationDescriptors;
> >> @@ -235,37 +199,6 @@ typedef struct {
> >> } UDF_VOLUME_DESCRIPTOR;
> >>
> >> typedef struct {
> >> - UDF_DESCRIPTOR_TAG DescriptorTag;
> >> - UINT32 VolumeDescriptorSequenceNumber;
> >> - UINT16 PartitionFlags;
> >> - UINT16 PartitionNumber;
> >> - UDF_ENTITY_ID PartitionContents;
> >> - UINT8 PartitionContentsUse[128];
> >> - UINT32 AccessType;
> >> - UINT32 PartitionStartingLocation;
> >> - UINT32 PartitionLength;
> >> - UDF_ENTITY_ID ImplementationIdentifier;
> >> - UINT8 ImplementationUse[128];
> >> - 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;
> >> @@ -389,12 +322,10 @@ 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 +814,6 @@ ResolveSymlink (
> >> );
> >>
> >> /**
> >> - 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.
> >>
> >> @param[in] File File information pointer.
> >> --
> >> 2.11.0
> >
> >
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