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[FREELDR] Move IoReadPartitionTable to ntoskrnl.c
This commit is contained in:
Timo Kreuzer
parent
77ba2d496b
commit
bee8e81d5a
2 changed files with 152 additions and 159 deletions
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@ -11,6 +11,10 @@
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#include <freeldr.h>
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#include <ntoskrnl.h>
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#ifndef UNIMPLEMENTED
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#define UNIMPLEMENTED ASSERT(FALSE)
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#endif
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/* FUNCTIONS *****************************************************************/
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VOID
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@ -52,17 +56,154 @@ IoSetPartitionInformation(
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return STATUS_NOT_IMPLEMENTED;
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}
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/*
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* NTSTATUS
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* FASTCALL
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* IoReadPartitionTable(
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* IN PDEVICE_OBJECT DeviceObject,
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* IN ULONG SectorSize,
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* IN BOOLEAN ReturnRecognizedPartitions,
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* OUT PDRIVE_LAYOUT_INFORMATION *PartitionBuffer);
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*
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* See boot/freeldr/freeldr/disk/partition.c
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*/
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#ifndef _M_AMD64
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NTSTATUS
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NTAPI
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IopReadBootRecord(
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IN PDEVICE_OBJECT DeviceObject,
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IN ULONGLONG LogicalSectorNumber,
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IN ULONG SectorSize,
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OUT PMASTER_BOOT_RECORD BootRecord)
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{
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ULONG_PTR FileId = (ULONG_PTR)DeviceObject;
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LARGE_INTEGER Position;
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ULONG BytesRead;
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ARC_STATUS Status;
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Position.QuadPart = LogicalSectorNumber * SectorSize;
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Status = ArcSeek(FileId, &Position, SeekAbsolute);
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if (Status != ESUCCESS)
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return STATUS_IO_DEVICE_ERROR;
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Status = ArcRead(FileId, BootRecord, SectorSize, &BytesRead);
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if (Status != ESUCCESS || BytesRead != SectorSize)
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return STATUS_IO_DEVICE_ERROR;
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return STATUS_SUCCESS;
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}
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BOOLEAN
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NTAPI
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IopCopyPartitionRecord(
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IN BOOLEAN ReturnRecognizedPartitions,
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IN ULONG SectorSize,
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IN PPARTITION_TABLE_ENTRY PartitionTableEntry,
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OUT PARTITION_INFORMATION *PartitionEntry)
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{
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BOOLEAN IsRecognized;
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IsRecognized = TRUE; /* FIXME */
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if (!IsRecognized && ReturnRecognizedPartitions)
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return FALSE;
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PartitionEntry->StartingOffset.QuadPart = (ULONGLONG)PartitionTableEntry->SectorCountBeforePartition * SectorSize;
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PartitionEntry->PartitionLength.QuadPart = (ULONGLONG)PartitionTableEntry->PartitionSectorCount * SectorSize;
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PartitionEntry->HiddenSectors = 0;
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PartitionEntry->PartitionNumber = 0; /* Will be filled later */
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PartitionEntry->PartitionType = PartitionTableEntry->SystemIndicator;
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PartitionEntry->BootIndicator = (PartitionTableEntry->BootIndicator & 0x80) ? TRUE : FALSE;
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PartitionEntry->RecognizedPartition = IsRecognized;
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PartitionEntry->RewritePartition = FALSE;
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return TRUE;
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}
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NTSTATUS
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FASTCALL
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IoReadPartitionTable(
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IN PDEVICE_OBJECT DeviceObject,
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IN ULONG SectorSize,
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IN BOOLEAN ReturnRecognizedPartitions,
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OUT PDRIVE_LAYOUT_INFORMATION *PartitionBuffer)
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{
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NTSTATUS Status;
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PMASTER_BOOT_RECORD MasterBootRecord;
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PDRIVE_LAYOUT_INFORMATION Partitions;
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ULONG NbPartitions, i, Size;
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*PartitionBuffer = NULL;
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if (SectorSize < sizeof(MASTER_BOOT_RECORD))
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return STATUS_NOT_SUPPORTED;
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MasterBootRecord = ExAllocatePool(NonPagedPool, SectorSize);
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if (!MasterBootRecord)
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return STATUS_NO_MEMORY;
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/* Read disk MBR */
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Status = IopReadBootRecord(DeviceObject, 0, SectorSize, MasterBootRecord);
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if (!NT_SUCCESS(Status))
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{
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ExFreePool(MasterBootRecord);
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return Status;
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}
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/* Check validity of boot record */
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if (MasterBootRecord->MasterBootRecordMagic != 0xaa55)
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{
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ExFreePool(MasterBootRecord);
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return STATUS_NOT_SUPPORTED;
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}
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/* Count number of partitions */
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NbPartitions = 0;
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for (i = 0; i < 4; i++)
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{
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NbPartitions++;
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if (MasterBootRecord->PartitionTable[i].SystemIndicator == PARTITION_EXTENDED ||
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MasterBootRecord->PartitionTable[i].SystemIndicator == PARTITION_XINT13_EXTENDED)
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{
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/* FIXME: unhandled case; count number of partitions */
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UNIMPLEMENTED;
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}
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}
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if (NbPartitions == 0)
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{
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ExFreePool(MasterBootRecord);
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return STATUS_NOT_SUPPORTED;
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}
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/* Allocation space to store partitions */
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Size = FIELD_OFFSET(DRIVE_LAYOUT_INFORMATION, PartitionEntry) +
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NbPartitions * sizeof(PARTITION_INFORMATION);
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Partitions = ExAllocatePool(NonPagedPool, Size);
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if (!Partitions)
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{
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ExFreePool(MasterBootRecord);
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return STATUS_NO_MEMORY;
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}
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/* Count number of partitions */
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NbPartitions = 0;
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for (i = 0; i < 4; i++)
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{
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if (IopCopyPartitionRecord(ReturnRecognizedPartitions,
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SectorSize,
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&MasterBootRecord->PartitionTable[i],
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&Partitions->PartitionEntry[NbPartitions]))
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{
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Partitions->PartitionEntry[NbPartitions].PartitionNumber = NbPartitions + 1;
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NbPartitions++;
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}
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if (MasterBootRecord->PartitionTable[i].SystemIndicator == PARTITION_EXTENDED ||
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MasterBootRecord->PartitionTable[i].SystemIndicator == PARTITION_XINT13_EXTENDED)
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{
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/* FIXME: unhandled case; copy partitions */
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UNIMPLEMENTED;
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}
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}
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Partitions->PartitionCount = NbPartitions;
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Partitions->Signature = MasterBootRecord->Signature;
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ExFreePool(MasterBootRecord);
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*PartitionBuffer = Partitions;
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return STATUS_SUCCESS;
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}
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#endif // _M_AMD64
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NTSTATUS
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FASTCALL
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@ -438,152 +438,4 @@ DiskGetPartitionEntry(
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return FALSE;
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}
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#ifndef _M_AMD64
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NTSTATUS
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NTAPI
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IopReadBootRecord(
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IN PDEVICE_OBJECT DeviceObject,
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IN ULONGLONG LogicalSectorNumber,
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IN ULONG SectorSize,
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OUT PMASTER_BOOT_RECORD BootRecord)
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{
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ULONG_PTR FileId = (ULONG_PTR)DeviceObject;
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LARGE_INTEGER Position;
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ULONG BytesRead;
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ARC_STATUS Status;
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Position.QuadPart = LogicalSectorNumber * SectorSize;
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Status = ArcSeek(FileId, &Position, SeekAbsolute);
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if (Status != ESUCCESS)
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return STATUS_IO_DEVICE_ERROR;
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Status = ArcRead(FileId, BootRecord, SectorSize, &BytesRead);
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if (Status != ESUCCESS || BytesRead != SectorSize)
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return STATUS_IO_DEVICE_ERROR;
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return STATUS_SUCCESS;
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}
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BOOLEAN
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NTAPI
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IopCopyPartitionRecord(
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IN BOOLEAN ReturnRecognizedPartitions,
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IN ULONG SectorSize,
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IN PPARTITION_TABLE_ENTRY PartitionTableEntry,
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OUT PARTITION_INFORMATION *PartitionEntry)
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{
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BOOLEAN IsRecognized;
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IsRecognized = TRUE; /* FIXME */
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if (!IsRecognized && ReturnRecognizedPartitions)
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return FALSE;
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PartitionEntry->StartingOffset.QuadPart = (ULONGLONG)PartitionTableEntry->SectorCountBeforePartition * SectorSize;
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PartitionEntry->PartitionLength.QuadPart = (ULONGLONG)PartitionTableEntry->PartitionSectorCount * SectorSize;
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PartitionEntry->HiddenSectors = 0;
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PartitionEntry->PartitionNumber = 0; /* Will be filled later */
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PartitionEntry->PartitionType = PartitionTableEntry->SystemIndicator;
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PartitionEntry->BootIndicator = (PartitionTableEntry->BootIndicator & 0x80) ? TRUE : FALSE;
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PartitionEntry->RecognizedPartition = IsRecognized;
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PartitionEntry->RewritePartition = FALSE;
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return TRUE;
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}
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NTSTATUS
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FASTCALL
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IoReadPartitionTable(
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IN PDEVICE_OBJECT DeviceObject,
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IN ULONG SectorSize,
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IN BOOLEAN ReturnRecognizedPartitions,
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OUT PDRIVE_LAYOUT_INFORMATION *PartitionBuffer)
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{
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NTSTATUS Status;
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PMASTER_BOOT_RECORD MasterBootRecord;
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PDRIVE_LAYOUT_INFORMATION Partitions;
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ULONG NbPartitions, i, Size;
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*PartitionBuffer = NULL;
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if (SectorSize < sizeof(MASTER_BOOT_RECORD))
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return STATUS_NOT_SUPPORTED;
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MasterBootRecord = ExAllocatePool(NonPagedPool, SectorSize);
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if (!MasterBootRecord)
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return STATUS_NO_MEMORY;
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/* Read disk MBR */
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Status = IopReadBootRecord(DeviceObject, 0, SectorSize, MasterBootRecord);
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if (!NT_SUCCESS(Status))
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{
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ExFreePool(MasterBootRecord);
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return Status;
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}
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/* Check validity of boot record */
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if (MasterBootRecord->MasterBootRecordMagic != 0xaa55)
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{
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ExFreePool(MasterBootRecord);
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return STATUS_NOT_SUPPORTED;
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}
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/* Count number of partitions */
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NbPartitions = 0;
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for (i = 0; i < 4; i++)
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{
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NbPartitions++;
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if (MasterBootRecord->PartitionTable[i].SystemIndicator == PARTITION_EXTENDED ||
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MasterBootRecord->PartitionTable[i].SystemIndicator == PARTITION_XINT13_EXTENDED)
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{
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/* FIXME: unhandled case; count number of partitions */
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UNIMPLEMENTED;
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}
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}
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if (NbPartitions == 0)
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{
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ExFreePool(MasterBootRecord);
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return STATUS_NOT_SUPPORTED;
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}
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/* Allocation space to store partitions */
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Size = FIELD_OFFSET(DRIVE_LAYOUT_INFORMATION, PartitionEntry) +
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NbPartitions * sizeof(PARTITION_INFORMATION);
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Partitions = ExAllocatePool(NonPagedPool, Size);
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if (!Partitions)
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{
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ExFreePool(MasterBootRecord);
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return STATUS_NO_MEMORY;
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}
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/* Count number of partitions */
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NbPartitions = 0;
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for (i = 0; i < 4; i++)
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{
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if (IopCopyPartitionRecord(ReturnRecognizedPartitions,
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SectorSize,
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&MasterBootRecord->PartitionTable[i],
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&Partitions->PartitionEntry[NbPartitions]))
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{
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Partitions->PartitionEntry[NbPartitions].PartitionNumber = NbPartitions + 1;
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NbPartitions++;
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}
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if (MasterBootRecord->PartitionTable[i].SystemIndicator == PARTITION_EXTENDED ||
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MasterBootRecord->PartitionTable[i].SystemIndicator == PARTITION_XINT13_EXTENDED)
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{
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/* FIXME: unhandled case; copy partitions */
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UNIMPLEMENTED;
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}
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}
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Partitions->PartitionCount = NbPartitions;
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Partitions->Signature = MasterBootRecord->Signature;
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ExFreePool(MasterBootRecord);
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*PartitionBuffer = Partitions;
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return STATUS_SUCCESS;
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}
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#endif // _M_AMD64
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#endif
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