/*
* @implemented
*/
VOID
NTAPI
FsRtlInitializeMcb(IN PMCB Mcb,
IN POOL_TYPE PoolType)
{
/* Call the newer function */
FsRtlInitializeLargeMcb(&Mcb->DummyFieldThatSizesThisStructureCorrectly,
PoolType);
}
NTSTATUS
UdfLoadSparingTables(
PIRP_CONTEXT IrpContext,
PVCB Vcb,
PPCB Pcb,
ULONG Reference
)
/*++
Routine Description:
This routine reads the sparing tables for a partition and fills
in the sparing Mcb.
Arguments:
Vcb - the volume hosting the spared partition
Pcb - the partion block corresponding to the volume
Reference - the partition reference being pulled in
Return Value:
NTSTATUS according to whether the sparing tables were loaded
--*/
{
NTSTATUS Status;
ULONG SparingTable;
PULONG SectorBuffer;
ULONG Psn;
ULONG RemainingBytes;
ULONG ByteOffset;
ULONG TotalBytes;
BOOLEAN Complete;
PSPARING_TABLE_HEADER Header;
PSPARING_TABLE_ENTRY Entry;
PPARTITION Partition = &Pcb->Partition[Reference];
PPARTMAP_SPARABLE Map = Partition->Physical.SparingMap;
ASSERT_IRP_CONTEXT( IrpContext );
ASSERT_VCB( Vcb );
ASSERT( Map != NULL );
DebugTrace(( +1, Dbg, "UdfLoadSparingTables, Vcb %08x, PcbPartition %08x, Map @ %08x\n", Vcb, Partition, Map ));
DebugTrace(( 0, Dbg, "UdfLoadSparingTables, Map sez: PacketLen %u, NTables %u, TableSize %u\n",
Map->PacketLength,
Map->NumSparingTables,
Map->TableSize));
//
// Check that the sparale map appears sane. If there are no sparing tables that
// is pretty OK, and it'll wind up looking like a regular physical partition.
//
if (Map->NumSparingTables == 0) {
DebugTrace(( 0, Dbg, "UdfLoadSparingTables, no sparing tables claimed!\n" ));
DebugTrace(( -1, Dbg, "UdfLoadSparingTables -> STATUS_SUCCESS\n" ));
return STATUS_SUCCESS;
}
if (Map->NumSparingTables > sizeof(Map->TableLocation)/sizeof(ULONG)) {
DebugTrace(( 0, Dbg, "UdfLoadSparingTables, too many claimed tables to fit! (max %u)\n",
sizeof(Map->TableLocation)/sizeof(ULONG)));
DebugTrace(( -1, Dbg, "UdfLoadSparingTables -> STATUS_DISK_CORRUPT_ERROR\n" ));
return STATUS_DISK_CORRUPT_ERROR;
}
if (Map->PacketLength != UDF_SPARING_PACKET_LENGTH) {
DebugTrace(( 0, Dbg, "UdfLoadSparingTables, packet size is %u (not %u!\n",
Map->PacketLength,
UDF_SPARING_PACKET_LENGTH ));
DebugTrace(( -1, Dbg, "UdfLoadSparingTables -> STATUS_DISK_CORRUPT_ERROR\n" ));
return STATUS_DISK_CORRUPT_ERROR;
}
if (Map->TableSize < sizeof(SPARING_TABLE_HEADER) ||
(Map->TableSize - sizeof(SPARING_TABLE_HEADER)) % sizeof(SPARING_TABLE_ENTRY) != 0) {
DebugTrace(( 0, Dbg, "UdfLoadSparingTables, sparing table size is too small or unaligned!\n" ));
DebugTrace(( -1, Dbg, "UdfLoadSparingTables -> STATUS_DISK_CORRUPT_ERROR\n" ));
return STATUS_DISK_CORRUPT_ERROR;
}
#ifdef UDF_SANITY
DebugTrace(( 0, Dbg, "UdfLoadSparingTables" ));
for (SparingTable = 0; SparingTable < Map->NumSparingTables; SparingTable++) {
DebugTrace(( 0, Dbg, ", Table %u @ %x", SparingTable, Map->TableLocation[SparingTable] ));
}
DebugTrace(( 0, Dbg, "\n" ));
#endif
//
// If a sparing mcb doesn't exist, manufacture one.
//
if (Pcb->SparingMcb == NULL) {
Pcb->SparingMcb = FsRtlAllocatePoolWithTag( PagedPool, sizeof(LARGE_MCB), TAG_SPARING_MCB );
FsRtlInitializeLargeMcb( Pcb->SparingMcb, PagedPool );
}
SectorBuffer = FsRtlAllocatePoolWithTag( PagedPool, PAGE_SIZE, TAG_NSR_FSD );
//
// Now loop across the sparing tables and pull the data in.
//
try {
for (Complete = FALSE, SparingTable = 0;
SparingTable < Map->NumSparingTables;
SparingTable++) {
DebugTrace(( 0, Dbg, "UdfLoadSparingTables, loading sparing table %u!\n",
SparingTable ));
ByteOffset = 0;
TotalBytes = 0;
RemainingBytes = 0;
do {
if (RemainingBytes == 0) {
(VOID) UdfReadSectors( IrpContext,
BytesFromSectors( Vcb, Map->TableLocation[SparingTable] ) + ByteOffset,
SectorSize( Vcb ),
FALSE,
SectorBuffer,
Vcb->TargetDeviceObject );
//
// Verify the descriptor at the head of the sparing table. If it is not
// valid, we just break out for a chance at the next table, if any.
//
if (ByteOffset == 0) {
Header = (PSPARING_TABLE_HEADER) SectorBuffer;
if (!UdfVerifyDescriptor( IrpContext,
&Header->Destag,
0,
SectorSize( Vcb ),
Header->Destag.Lbn,
TRUE )) {
DebugTrace(( 0, Dbg, "UdfLoadSparingTables, sparing table %u didn't verify destag!\n",
SparingTable ));
break;
}
if (!UdfUdfIdentifierContained( &Header->RegID,
&UdfSparingTableIdentifier,
UDF_VERSION_150,
UDF_VERSION_RECOGNIZED,
OSCLASS_INVALID,
OSIDENTIFIER_INVALID)) {
DebugTrace(( 0, Dbg, "UdfLoadSparingTables, sparing table %u didn't verify regid!\n",
SparingTable ));
break;
}
//
// Calculate the total number bytes this map spans and check it against what
// we were told the sparing table sizes are.
//
DebugTrace(( 0, Dbg, "UdfLoadSparingTables, Sparing table %u has %u entries\n",
SparingTable,
Header->TableEntries ));
TotalBytes = sizeof(SPARING_TABLE_HEADER) + Header->TableEntries * sizeof(SPARING_TABLE_ENTRY);
if (Map->TableSize < TotalBytes) {
DebugTrace(( 0, Dbg, "UdfLoadSparingTables, sparing table #ents %u overflows allocation!\n",
Header->TableEntries ));
break;
}
//
// So far so good, advance past the header.
//
ByteOffset = sizeof(SPARING_TABLE_HEADER);
Entry = Add2Ptr( SectorBuffer, sizeof(SPARING_TABLE_HEADER), PSPARING_TABLE_ENTRY );
} else {
//
// Pick up in the new sector.
//
Entry = (PSPARING_TABLE_ENTRY) SectorBuffer;
}
RemainingBytes = Min( SectorSize( Vcb ), TotalBytes - ByteOffset );
}
//
// Add the mapping. Since sparing tables are an Lbn->Psn mapping,
// very odd, and I want to simplify things by putting the sparing
// in right at IO dispatch, translate this to a Psn->Psn mapping.
//
if (Entry->Original != UDF_SPARING_AVALIABLE &&
Entry->Original != UDF_SPARING_DEFECTIVE) {
Psn = Partition->Physical.Start + SectorsFromBlocks( Vcb, Entry->Original );
DebugTrace(( 0, Dbg, "UdfLoadSparingTables, mapping from Psn %x (Lbn %x) -> Psn %x\n",
Psn,
Entry->Original,
Entry->Mapped ));
FsRtlAddLargeMcbEntry( Pcb->SparingMcb,
Psn,
Entry->Mapped,
UDF_SPARING_PACKET_LENGTH );
}
//
// Advance to the next, and drop out if we've hit the end.
//
ByteOffset += sizeof(SPARING_TABLE_ENTRY);
RemainingBytes -= sizeof(SPARING_TABLE_ENTRY);
Entry++;
} while ( ByteOffset < TotalBytes );
}
} finally {
DebugUnwind( UdfLoadSparingTables );
UdfFreePool( &SectorBuffer );
}
DebugTrace(( -1, Dbg, "UdfLoadSparingTables -> STATUS_SUCCESS\n" ));
return STATUS_SUCCESS;
}
NTSTATUS
FFSInitializeVcb(
IN PFFS_IRP_CONTEXT IrpContext,
IN PFFS_VCB Vcb,
IN PFFS_SUPER_BLOCK FFSSb,
IN PDEVICE_OBJECT TargetDevice,
IN PDEVICE_OBJECT VolumeDevice,
IN PVPB Vpb)
{
BOOLEAN VcbResourceInitialized = FALSE;
USHORT VolumeLabelLength;
ULONG IoctlSize;
BOOLEAN NotifySyncInitialized = FALSE;
LONGLONG DiskSize;
LONGLONG PartSize;
NTSTATUS Status = STATUS_UNSUCCESSFUL;
UNICODE_STRING RootNode;
USHORT Buffer[2];
ULONG ChangeCount;
__try
{
if (!Vpb)
{
Status = STATUS_DEVICE_NOT_READY;
__leave;
}
Buffer[0] = L'\\';
Buffer[1] = 0;
RootNode.Buffer = Buffer;
RootNode.MaximumLength = RootNode.Length = 2;
Vcb->McbTree = FFSAllocateMcb(Vcb, &RootNode,
FILE_ATTRIBUTE_DIRECTORY | FILE_ATTRIBUTE_NORMAL);
if (!Vcb->McbTree)
{
__leave;
}
#if FFS_READ_ONLY
SetFlag(Vcb->Flags, VCB_READ_ONLY);
#endif //READ_ONLY
if (IsFlagOn(Vpb->RealDevice->Characteristics, FILE_REMOVABLE_MEDIA))
{
SetFlag(Vcb->Flags, VCB_REMOVABLE_MEDIA);
}
if (IsFlagOn(Vpb->RealDevice->Characteristics, FILE_FLOPPY_DISKETTE))
{
SetFlag(Vcb->Flags, VCB_FLOPPY_DISK);
}
#if 0
if (IsFlagOn(FFSGlobal->Flags, FFS_SUPPORT_WRITING))
{
if (IsFlagOn(FFSGlobal->Flags, FFS_SUPPORT_WRITING))
{
ClearFlag(Vcb->Flags, VCB_READ_ONLY);
}
else
{
SetFlag(Vcb->Flags, VCB_READ_ONLY);
}
}
else
#endif
{
SetFlag(Vcb->Flags, VCB_READ_ONLY);
}
ExInitializeResourceLite(&Vcb->MainResource);
ExInitializeResourceLite(&Vcb->PagingIoResource);
ExInitializeResourceLite(&Vcb->McbResource);
VcbResourceInitialized = TRUE;
Vcb->McbTree->Inode = FFS_ROOT_INO;
Vcb->Vpb = Vpb;
Vcb->RealDevice = Vpb->RealDevice;
Vpb->DeviceObject = VolumeDevice;
{
UNICODE_STRING LabelName;
OEM_STRING OemName;
LabelName.MaximumLength = 16 * 2;
LabelName.Length = 0;
LabelName.Buffer = Vcb->Vpb->VolumeLabel;
RtlZeroMemory(LabelName.Buffer, LabelName.MaximumLength);
VolumeLabelLength = 16;
while((VolumeLabelLength > 0) &&
((FFSSb->fs_volname[VolumeLabelLength-1] == 0x00) ||
(FFSSb->fs_volname[VolumeLabelLength-1] == 0x20)))
{
VolumeLabelLength--;
}
OemName.Buffer = FFSSb->fs_volname;
OemName.MaximumLength = 16;
OemName.Length = VolumeLabelLength;
Status = FFSOEMToUnicode(&LabelName,
&OemName);
if (!NT_SUCCESS(Status))
{
__leave;
}
Vpb->VolumeLabelLength = LabelName.Length;
}
Vpb->SerialNumber = ((ULONG*)FFSSb->fs_id)[0] + ((ULONG*)FFSSb->fs_id)[1] +
((ULONG*)FFSSb->fs_id)[2];
Vcb->StreamObj = IoCreateStreamFileObject(NULL, Vcb->Vpb->RealDevice);
if (Vcb->StreamObj)
{
Vcb->StreamObj->SectionObjectPointer = &(Vcb->SectionObject);
Vcb->StreamObj->Vpb = Vcb->Vpb;
Vcb->StreamObj->ReadAccess = TRUE;
if (IsFlagOn(Vcb->Flags, VCB_READ_ONLY))
{
Vcb->StreamObj->WriteAccess = TRUE;
Vcb->StreamObj->DeleteAccess = TRUE;
}
else
{
Vcb->StreamObj->WriteAccess = TRUE;
Vcb->StreamObj->DeleteAccess = TRUE;
}
Vcb->StreamObj->FsContext = (PVOID) Vcb;
Vcb->StreamObj->FsContext2 = NULL;
Vcb->StreamObj->Vpb = Vcb->Vpb;
SetFlag(Vcb->StreamObj->Flags, FO_NO_INTERMEDIATE_BUFFERING);
}
else
{
__leave;
}
InitializeListHead(&Vcb->FcbList);
InitializeListHead(&Vcb->NotifyList);
FsRtlNotifyInitializeSync(&Vcb->NotifySync);
NotifySyncInitialized = TRUE;
Vcb->DeviceObject = VolumeDevice;
Vcb->TargetDeviceObject = TargetDevice;
Vcb->OpenFileHandleCount = 0;
Vcb->ReferenceCount = 0;
Vcb->ffs_super_block = FFSSb;
Vcb->Header.NodeTypeCode = (USHORT) FFSVCB;
Vcb->Header.NodeByteSize = sizeof(FFS_VCB);
Vcb->Header.IsFastIoPossible = FastIoIsNotPossible;
Vcb->Header.Resource = &(Vcb->MainResource);
Vcb->Header.PagingIoResource = &(Vcb->PagingIoResource);
Vcb->Vpb->SerialNumber = 'PS';
DiskSize =
Vcb->DiskGeometry.Cylinders.QuadPart *
Vcb->DiskGeometry.TracksPerCylinder *
Vcb->DiskGeometry.SectorsPerTrack *
Vcb->DiskGeometry.BytesPerSector;
IoctlSize = sizeof(PARTITION_INFORMATION);
Status = FFSDiskIoControl(
TargetDevice,
IOCTL_DISK_GET_PARTITION_INFO,
NULL,
0,
&Vcb->PartitionInformation,
&IoctlSize);
PartSize = Vcb->PartitionInformation.PartitionLength.QuadPart;
if (!NT_SUCCESS(Status))
{
Vcb->PartitionInformation.StartingOffset.QuadPart = 0;
Vcb->PartitionInformation.PartitionLength.QuadPart =
DiskSize;
PartSize = DiskSize;
Status = STATUS_SUCCESS;
}
IoctlSize = sizeof(ULONG);
Status = FFSDiskIoControl(
TargetDevice,
IOCTL_DISK_CHECK_VERIFY,
NULL,
0,
&ChangeCount,
&IoctlSize);
if (!NT_SUCCESS(Status))
{
__leave;
}
Vcb->ChangeCount = ChangeCount;
Vcb->Header.AllocationSize.QuadPart =
Vcb->Header.FileSize.QuadPart = PartSize;
Vcb->Header.ValidDataLength.QuadPart =
(LONGLONG)(0x7fffffffffffffff);
/*
Vcb->Header.AllocationSize.QuadPart = (LONGLONG)(ffs_super_block->s_blocks_count - ffs_super_block->s_free_blocks_count)
* (FFS_MIN_BLOCK << ffs_super_block->s_log_block_size);
Vcb->Header.FileSize.QuadPart = Vcb->Header.AllocationSize.QuadPart;
Vcb->Header.ValidDataLength.QuadPart = Vcb->Header.AllocationSize.QuadPart;
*/
{
CC_FILE_SIZES FileSizes;
FileSizes.AllocationSize.QuadPart =
FileSizes.FileSize.QuadPart =
Vcb->Header.AllocationSize.QuadPart;
FileSizes.ValidDataLength.QuadPart= (LONGLONG)(0x7fffffffffffffff);
CcInitializeCacheMap(Vcb->StreamObj,
&FileSizes,
TRUE,
&(FFSGlobal->CacheManagerNoOpCallbacks),
Vcb);
}
#if 0 // LoadGroup XXX
if (!FFSLoadGroup(Vcb))
{
Status = STATUS_UNSUCCESSFUL;
__leave;
}
#endif
FsRtlInitializeLargeMcb(&(Vcb->DirtyMcbs), PagedPool);
InitializeListHead(&(Vcb->McbList));
if (IsFlagOn(FFSGlobal->Flags, FFS_CHECKING_BITMAP))
{
FFSCheckBitmapConsistency(IrpContext, Vcb);
}
{
ULONG dwData[FFS_BLOCK_TYPES] = {NDADDR, 1, 1, 1};
ULONG dwMeta[FFS_BLOCK_TYPES] = {0, 0, 0, 0};
ULONG i;
if (FS_VERSION == 1)
{
for (i = 0; i < FFS_BLOCK_TYPES; i++)
{
dwData[i] = dwData[i] << ((BLOCK_BITS - 2) * i);
if (i > 0)
{
dwMeta[i] = 1 + (dwMeta[i - 1] << (BLOCK_BITS - 2));
}
Vcb->dwData[i] = dwData[i];
Vcb->dwMeta[i] = dwMeta[i];
}
}
else
{
for (i = 0; i < FFS_BLOCK_TYPES; i++)
{
dwData[i] = dwData[i] << ((BLOCK_BITS - 3) * i);
if (i > 0)
{
dwMeta[i] = 1 + (dwMeta[i - 1] << (BLOCK_BITS - 3));
}
Vcb->dwData[i] = dwData[i];
Vcb->dwMeta[i] = dwMeta[i];
}
}
}
SetFlag(Vcb->Flags, VCB_INITIALIZED);
}
__finally
{
if (!NT_SUCCESS(Status))
{
if (NotifySyncInitialized)
{
FsRtlNotifyUninitializeSync(&Vcb->NotifySync);
}
if (Vcb->ffs_super_block)
{
ExFreePool(Vcb->ffs_super_block);
Vcb->ffs_super_block = NULL;
}
if (VcbResourceInitialized)
{
ExDeleteResourceLite(&Vcb->MainResource);
ExDeleteResourceLite(&Vcb->PagingIoResource);
}
}
}
return Status;
}
