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https://github.com/reactos/reactos.git
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827 lines
26 KiB
C
827 lines
26 KiB
C
/*
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* PROJECT: Partition manager driver
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* LICENSE: GPL-2.0-or-later (https://spdx.org/licenses/GPL-2.0-or-later)
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* PURPOSE: Partition device code
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* COPYRIGHT: 2020 Victor Perevertkin (victor.perevertkin@reactos.org)
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*/
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#include "partmgr.h"
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static const WCHAR PartitionSymLinkFormat[] = L"\\Device\\Harddisk%lu\\Partition%lu";
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CODE_SEG("PAGE")
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NTSTATUS
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PartitionCreateDevice(
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_In_ PDEVICE_OBJECT FDObject,
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_In_ PPARTITION_INFORMATION_EX PartitionEntry,
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_In_ UINT32 PdoNumber,
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_In_ PARTITION_STYLE PartitionStyle,
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_Out_ PDEVICE_OBJECT *PDO)
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{
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PAGED_CODE();
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static UINT32 HarddiskVolumeNextId = 1; // this is 1-based
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WCHAR nameBuf[64];
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UNICODE_STRING deviceName;
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UINT32 volumeNum;
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// create the device object
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volumeNum = HarddiskVolumeNextId++;
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swprintf(nameBuf, L"\\Device\\HarddiskVolume%lu", volumeNum);
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RtlCreateUnicodeString(&deviceName, nameBuf);
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PDEVICE_OBJECT partitionDevice;
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NTSTATUS status = IoCreateDevice(FDObject->DriverObject,
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sizeof(PARTITION_EXTENSION),
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&deviceName,
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FILE_DEVICE_DISK,
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FILE_DEVICE_SECURE_OPEN,
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FALSE,
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&partitionDevice);
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if (!NT_SUCCESS(status))
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{
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ERR("Unable to create device object %wZ\n", &deviceName);
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return status;
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}
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INFO("Created device object %p %wZ\n", partitionDevice, &deviceName);
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PPARTITION_EXTENSION partExt = partitionDevice->DeviceExtension;
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RtlZeroMemory(partExt, sizeof(*partExt));
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partitionDevice->StackSize = FDObject->StackSize;
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partitionDevice->Flags |= DO_DIRECT_IO;
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if (PartitionStyle == PARTITION_STYLE_MBR)
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{
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partExt->Mbr.PartitionType = PartitionEntry->Mbr.PartitionType;
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partExt->Mbr.BootIndicator = PartitionEntry->Mbr.BootIndicator;
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partExt->Mbr.HiddenSectors = PartitionEntry->Mbr.HiddenSectors;
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}
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else
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{
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partExt->Gpt.PartitionType = PartitionEntry->Gpt.PartitionType;
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partExt->Gpt.PartitionId = PartitionEntry->Gpt.PartitionType;
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partExt->Gpt.Attributes = PartitionEntry->Gpt.Attributes;
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RtlCopyMemory(partExt->Gpt.Name, PartitionEntry->Gpt.Name, sizeof(partExt->Gpt.Name));
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}
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partExt->DeviceName = deviceName;
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partExt->StartingOffset = PartitionEntry->StartingOffset.QuadPart;
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partExt->PartitionLength = PartitionEntry->PartitionLength.QuadPart;
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partExt->OnDiskNumber = PartitionEntry->PartitionNumber; // the "physical" partition number
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partExt->DetectedNumber = PdoNumber; // counts only partitions with PDO created
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partExt->VolumeNumber = volumeNum;
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partExt->DeviceObject = partitionDevice;
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partExt->LowerDevice = FDObject;
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partitionDevice->Flags &= ~DO_DEVICE_INITIALIZING;
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*PDO = partitionDevice;
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return status;
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}
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static
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CODE_SEG("PAGE")
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NTSTATUS
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PartitionHandleStartDevice(
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_In_ PPARTITION_EXTENSION PartExt,
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_In_ PIRP Irp)
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{
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PAGED_CODE();
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// first, create a symbolic link for our device
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WCHAR nameBuf[64];
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UNICODE_STRING partitionSymlink, interfaceName;
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PFDO_EXTENSION fdoExtension = PartExt->LowerDevice->DeviceExtension;
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// \\Device\\Harddisk%lu\\Partition%lu
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swprintf(nameBuf, PartitionSymLinkFormat,
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fdoExtension->DiskData.DeviceNumber, PartExt->DetectedNumber);
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if (!RtlCreateUnicodeString(&partitionSymlink, nameBuf))
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{
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return STATUS_INSUFFICIENT_RESOURCES;
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}
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NTSTATUS status = IoCreateSymbolicLink(&partitionSymlink, &PartExt->DeviceName);
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if (!NT_SUCCESS(status))
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{
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return status;
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}
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PartExt->SymlinkCreated = TRUE;
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INFO("Symlink created %wZ -> %wZ\n", &partitionSymlink, &PartExt->DeviceName);
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// our partition device will have two interfaces:
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// GUID_DEVINTERFACE_PARTITION and GUID_DEVINTERFACE_VOLUME
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// the former one is used to notify mountmgr about new device
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status = IoRegisterDeviceInterface(PartExt->DeviceObject,
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&GUID_DEVINTERFACE_PARTITION,
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NULL,
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&interfaceName);
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if (!NT_SUCCESS(status))
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{
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return status;
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}
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PartExt->PartitionInterfaceName = interfaceName;
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status = IoSetDeviceInterfaceState(&interfaceName, TRUE);
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INFO("Partition interface %wZ\n", &interfaceName);
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if (!NT_SUCCESS(status))
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{
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RtlFreeUnicodeString(&interfaceName);
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RtlInitUnicodeString(&PartExt->PartitionInterfaceName, NULL);
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return status;
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}
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status = IoRegisterDeviceInterface(PartExt->DeviceObject,
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&GUID_DEVINTERFACE_VOLUME,
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NULL,
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&interfaceName);
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if (!NT_SUCCESS(status))
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{
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return status;
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}
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PartExt->VolumeInterfaceName = interfaceName;
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status = IoSetDeviceInterfaceState(&interfaceName, TRUE);
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INFO("Volume interface %wZ\n", &interfaceName);
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if (!NT_SUCCESS(status))
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{
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RtlFreeUnicodeString(&interfaceName);
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RtlInitUnicodeString(&PartExt->VolumeInterfaceName, NULL);
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return status;
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}
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return STATUS_SUCCESS;
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}
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CODE_SEG("PAGE")
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NTSTATUS
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PartitionHandleRemove(
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_In_ PPARTITION_EXTENSION PartExt,
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_In_ BOOLEAN FinalRemove)
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{
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NTSTATUS status;
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PAGED_CODE();
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// remove the symbolic link
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if (PartExt->SymlinkCreated)
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{
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WCHAR nameBuf[64];
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UNICODE_STRING partitionSymlink;
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PFDO_EXTENSION fdoExtension = PartExt->LowerDevice->DeviceExtension;
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swprintf(nameBuf, PartitionSymLinkFormat,
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fdoExtension->DiskData.DeviceNumber, PartExt->DetectedNumber);
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RtlInitUnicodeString(&partitionSymlink, nameBuf);
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status = IoDeleteSymbolicLink(&partitionSymlink);
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if (!NT_SUCCESS(status))
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{
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return status;
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}
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PartExt->SymlinkCreated = FALSE;
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INFO("Symlink removed %wZ -> %wZ\n", &partitionSymlink, &PartExt->DeviceName);
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}
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// release device interfaces
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if (PartExt->PartitionInterfaceName.Buffer)
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{
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status = IoSetDeviceInterfaceState(&PartExt->PartitionInterfaceName, FALSE);
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if (!NT_SUCCESS(status))
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{
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return status;
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}
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RtlFreeUnicodeString(&PartExt->PartitionInterfaceName);
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RtlInitUnicodeString(&PartExt->PartitionInterfaceName, NULL);
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}
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if (PartExt->VolumeInterfaceName.Buffer)
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{
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status = IoSetDeviceInterfaceState(&PartExt->VolumeInterfaceName, FALSE);
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if (!NT_SUCCESS(status))
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{
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return status;
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}
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RtlFreeUnicodeString(&PartExt->VolumeInterfaceName);
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RtlInitUnicodeString(&PartExt->VolumeInterfaceName, NULL);
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}
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if (FinalRemove)
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{
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ASSERT(PartExt->DeviceName.Buffer);
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if (PartExt->DeviceName.Buffer)
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{
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INFO("Removed device %wZ\n", &PartExt->DeviceName);
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RtlFreeUnicodeString(&PartExt->DeviceName);
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}
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IoDeleteDevice(PartExt->DeviceObject);
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}
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return STATUS_SUCCESS;
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}
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static
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CODE_SEG("PAGE")
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NTSTATUS
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PartitionHandleDeviceRelations(
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_In_ PPARTITION_EXTENSION PartExt,
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_In_ PIRP Irp)
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{
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PAGED_CODE();
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PIO_STACK_LOCATION ioStack = IoGetCurrentIrpStackLocation(Irp);
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DEVICE_RELATION_TYPE type = ioStack->Parameters.QueryDeviceRelations.Type;
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if (type == TargetDeviceRelation)
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{
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// Device relations have one entry built into their size.
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PDEVICE_RELATIONS deviceRelations =
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ExAllocatePoolZero(PagedPool, sizeof(DEVICE_RELATIONS), TAG_PARTMGR);
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if (deviceRelations != NULL)
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{
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deviceRelations->Count = 1;
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deviceRelations->Objects[0] = PartExt->DeviceObject;
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ObReferenceObject(deviceRelations->Objects[0]);
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Irp->IoStatus.Information = (ULONG_PTR)deviceRelations;
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return STATUS_SUCCESS;
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}
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else
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{
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return STATUS_INSUFFICIENT_RESOURCES;
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}
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}
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else
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{
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Irp->IoStatus.Information = 0;
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return Irp->IoStatus.Status;
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}
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}
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static
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CODE_SEG("PAGE")
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NTSTATUS
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PartitionHandleQueryId(
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_In_ PPARTITION_EXTENSION PartExt,
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_In_ PIRP Irp)
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{
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PIO_STACK_LOCATION ioStack = IoGetCurrentIrpStackLocation(Irp);
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BUS_QUERY_ID_TYPE idType = ioStack->Parameters.QueryId.IdType;
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UNICODE_STRING idString;
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NTSTATUS status;
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PAGED_CODE();
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switch (idType)
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{
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case BusQueryDeviceID:
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status = RtlCreateUnicodeString(&idString, L"STORAGE\\Partition")
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? STATUS_SUCCESS : STATUS_INSUFFICIENT_RESOURCES;
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break;
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case BusQueryHardwareIDs:
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{
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static WCHAR volumeID[] = L"STORAGE\\Volume\0";
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idString.Buffer = ExAllocatePoolWithTag(PagedPool, sizeof(volumeID), TAG_PARTMGR);
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RtlCopyMemory(idString.Buffer, volumeID, sizeof(volumeID));
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status = STATUS_SUCCESS;
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break;
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}
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case BusQueryInstanceID:
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{
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WCHAR string[64];
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PFDO_EXTENSION fdoExtension = PartExt->LowerDevice->DeviceExtension;
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PartMgrAcquireLayoutLock(fdoExtension);
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if (fdoExtension->DiskData.PartitionStyle == PARTITION_STYLE_MBR)
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{
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swprintf(string, L"S%08lx_O%I64x_L%I64x",
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fdoExtension->DiskData.Mbr.Signature,
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PartExt->StartingOffset,
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PartExt->PartitionLength);
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}
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else
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{
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swprintf(string,
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L"S%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02xS_O%I64x_L%I64x",
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fdoExtension->DiskData.Gpt.DiskId.Data1,
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fdoExtension->DiskData.Gpt.DiskId.Data2,
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fdoExtension->DiskData.Gpt.DiskId.Data3,
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fdoExtension->DiskData.Gpt.DiskId.Data4[0],
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fdoExtension->DiskData.Gpt.DiskId.Data4[1],
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fdoExtension->DiskData.Gpt.DiskId.Data4[2],
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fdoExtension->DiskData.Gpt.DiskId.Data4[3],
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fdoExtension->DiskData.Gpt.DiskId.Data4[4],
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fdoExtension->DiskData.Gpt.DiskId.Data4[5],
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fdoExtension->DiskData.Gpt.DiskId.Data4[6],
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fdoExtension->DiskData.Gpt.DiskId.Data4[7],
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PartExt->StartingOffset,
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PartExt->PartitionLength);
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}
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PartMgrReleaseLayoutLock(fdoExtension);
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status = RtlCreateUnicodeString(&idString, string)
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? STATUS_SUCCESS : STATUS_INSUFFICIENT_RESOURCES;
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break;
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}
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default:
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status = STATUS_NOT_SUPPORTED;
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break;
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}
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Irp->IoStatus.Information = NT_SUCCESS(status) ? (ULONG_PTR) idString.Buffer : 0;
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return status;
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}
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static
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CODE_SEG("PAGE")
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NTSTATUS
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PartitionHandleQueryCapabilities(
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_In_ PPARTITION_EXTENSION PartExt,
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_In_ PIRP Irp)
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{
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PIO_STACK_LOCATION ioStack = IoGetCurrentIrpStackLocation(Irp);
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PDEVICE_CAPABILITIES devCaps = ioStack->Parameters.DeviceCapabilities.Capabilities;
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PAGED_CODE();
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ASSERT(devCaps);
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devCaps->SilentInstall = TRUE;
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devCaps->RawDeviceOK = TRUE;
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devCaps->NoDisplayInUI = TRUE;
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devCaps->Address = PartExt->OnDiskNumber;
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devCaps->UniqueID = FALSE;
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return STATUS_SUCCESS;
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}
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CODE_SEG("PAGE")
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NTSTATUS
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PartitionHandlePnp(
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_In_ PDEVICE_OBJECT DeviceObject,
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_In_ PIRP Irp)
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{
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PPARTITION_EXTENSION partExt = DeviceObject->DeviceExtension;
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PIO_STACK_LOCATION ioStack = IoGetCurrentIrpStackLocation(Irp);
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NTSTATUS status;
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PAGED_CODE();
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switch (ioStack->MinorFunction)
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{
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case IRP_MN_START_DEVICE:
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{
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status = PartitionHandleStartDevice(partExt, Irp);
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break;
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}
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case IRP_MN_QUERY_DEVICE_RELATIONS:
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{
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status = PartitionHandleDeviceRelations(partExt, Irp);
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break;
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}
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case IRP_MN_QUERY_STOP_DEVICE:
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case IRP_MN_QUERY_REMOVE_DEVICE:
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case IRP_MN_CANCEL_STOP_DEVICE:
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case IRP_MN_CANCEL_REMOVE_DEVICE:
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case IRP_MN_STOP_DEVICE:
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{
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status = STATUS_SUCCESS;
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break;
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}
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case IRP_MN_SURPRISE_REMOVAL:
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{
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status = PartitionHandleRemove(partExt, FALSE);
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break;
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}
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case IRP_MN_REMOVE_DEVICE:
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{
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status = PartitionHandleRemove(partExt, TRUE);
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break;
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}
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case IRP_MN_QUERY_ID:
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{
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status = PartitionHandleQueryId(partExt, Irp);
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break;
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}
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case IRP_MN_QUERY_CAPABILITIES:
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{
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status = PartitionHandleQueryCapabilities(partExt, Irp);
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break;
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}
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default:
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{
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Irp->IoStatus.Information = 0;
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status = STATUS_NOT_SUPPORTED;
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}
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}
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Irp->IoStatus.Status = status;
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IoCompleteRequest(Irp, IO_NO_INCREMENT);
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return status;
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}
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NTSTATUS
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PartitionHandleDeviceControl(
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_In_ PDEVICE_OBJECT DeviceObject,
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_In_ PIRP Irp)
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{
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PIO_STACK_LOCATION ioStack = IoGetCurrentIrpStackLocation(Irp);
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PPARTITION_EXTENSION partExt = DeviceObject->DeviceExtension;
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PFDO_EXTENSION fdoExtension = partExt->LowerDevice->DeviceExtension;
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NTSTATUS status;
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ASSERT(!partExt->IsFDO);
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if (!partExt->IsEnumerated)
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{
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Irp->IoStatus.Status = STATUS_DEVICE_DOES_NOT_EXIST;
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IoCompleteRequest(Irp, IO_NO_INCREMENT);
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return STATUS_DEVICE_DOES_NOT_EXIST;
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}
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switch (ioStack->Parameters.DeviceIoControl.IoControlCode)
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{
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// disk stuff
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case IOCTL_DISK_GET_PARTITION_INFO:
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{
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if (!VerifyIrpOutBufferSize(Irp, sizeof(PARTITION_INFORMATION)))
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{
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status = STATUS_BUFFER_TOO_SMALL;
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break;
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}
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PartMgrAcquireLayoutLock(fdoExtension);
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// not supported on anything other than MBR
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if (fdoExtension->DiskData.PartitionStyle != PARTITION_STYLE_MBR)
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{
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status = STATUS_INVALID_DEVICE_REQUEST;
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PartMgrReleaseLayoutLock(fdoExtension);
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break;
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}
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PPARTITION_INFORMATION partInfo = Irp->AssociatedIrp.SystemBuffer;
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*partInfo = (PARTITION_INFORMATION){
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.PartitionType = partExt->Mbr.PartitionType,
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.StartingOffset.QuadPart = partExt->StartingOffset,
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.PartitionLength.QuadPart = partExt->PartitionLength,
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.HiddenSectors = partExt->Mbr.HiddenSectors,
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.PartitionNumber = partExt->DetectedNumber,
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.BootIndicator = partExt->Mbr.BootIndicator,
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.RecognizedPartition = partExt->Mbr.RecognizedPartition,
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.RewritePartition = FALSE,
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};
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PartMgrReleaseLayoutLock(fdoExtension);
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Irp->IoStatus.Information = sizeof(*partInfo);
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status = STATUS_SUCCESS;
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break;
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}
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case IOCTL_DISK_GET_PARTITION_INFO_EX:
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{
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if (!VerifyIrpOutBufferSize(Irp, sizeof(PARTITION_INFORMATION_EX)))
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{
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status = STATUS_BUFFER_TOO_SMALL;
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break;
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}
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PPARTITION_INFORMATION_EX partInfoEx = Irp->AssociatedIrp.SystemBuffer;
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PartMgrAcquireLayoutLock(fdoExtension);
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*partInfoEx = (PARTITION_INFORMATION_EX){
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.StartingOffset.QuadPart = partExt->StartingOffset,
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.PartitionLength.QuadPart = partExt->PartitionLength,
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.PartitionNumber = partExt->DetectedNumber,
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.PartitionStyle = fdoExtension->DiskData.PartitionStyle,
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.RewritePartition = FALSE,
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};
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if (fdoExtension->DiskData.PartitionStyle == PARTITION_STYLE_MBR)
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{
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partInfoEx->Mbr = (PARTITION_INFORMATION_MBR){
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.PartitionType = partExt->Mbr.PartitionType,
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.HiddenSectors = partExt->Mbr.HiddenSectors,
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.BootIndicator = partExt->Mbr.BootIndicator,
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.RecognizedPartition = partExt->Mbr.RecognizedPartition,
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};
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}
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else
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{
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partInfoEx->Gpt = (PARTITION_INFORMATION_GPT){
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.PartitionType = partExt->Gpt.PartitionType,
|
|
.PartitionId = partExt->Gpt.PartitionId,
|
|
.Attributes = partExt->Gpt.Attributes,
|
|
};
|
|
|
|
RtlCopyMemory(partInfoEx->Gpt.Name,
|
|
partExt->Gpt.Name,
|
|
sizeof(partInfoEx->Gpt.Name));
|
|
}
|
|
|
|
PartMgrReleaseLayoutLock(fdoExtension);
|
|
|
|
Irp->IoStatus.Information = sizeof(*partInfoEx);
|
|
status = STATUS_SUCCESS;
|
|
break;
|
|
}
|
|
case IOCTL_DISK_SET_PARTITION_INFO:
|
|
{
|
|
PSET_PARTITION_INFORMATION inputBuffer = Irp->AssociatedIrp.SystemBuffer;
|
|
if (!VerifyIrpInBufferSize(Irp, sizeof(*inputBuffer)))
|
|
{
|
|
status = STATUS_INFO_LENGTH_MISMATCH;
|
|
break;
|
|
}
|
|
|
|
PartMgrAcquireLayoutLock(fdoExtension);
|
|
|
|
// these functions use on disk numbers, not detected ones
|
|
status = IoSetPartitionInformation(fdoExtension->LowerDevice,
|
|
fdoExtension->DiskData.BytesPerSector,
|
|
partExt->OnDiskNumber,
|
|
inputBuffer->PartitionType);
|
|
|
|
if (NT_SUCCESS(status))
|
|
{
|
|
partExt->Mbr.PartitionType = inputBuffer->PartitionType;
|
|
}
|
|
|
|
PartMgrReleaseLayoutLock(fdoExtension);
|
|
|
|
Irp->IoStatus.Information = 0;
|
|
break;
|
|
}
|
|
case IOCTL_DISK_SET_PARTITION_INFO_EX:
|
|
{
|
|
PSET_PARTITION_INFORMATION_EX inputBuffer = Irp->AssociatedIrp.SystemBuffer;
|
|
if (!VerifyIrpInBufferSize(Irp, sizeof(*inputBuffer)))
|
|
{
|
|
status = STATUS_INFO_LENGTH_MISMATCH;
|
|
break;
|
|
}
|
|
|
|
PartMgrAcquireLayoutLock(fdoExtension);
|
|
|
|
// these functions use on disk numbers, not detected ones
|
|
status = IoSetPartitionInformationEx(fdoExtension->LowerDevice,
|
|
partExt->OnDiskNumber,
|
|
inputBuffer);
|
|
|
|
if (NT_SUCCESS(status))
|
|
{
|
|
if (fdoExtension->DiskData.PartitionStyle == PARTITION_STYLE_MBR)
|
|
{
|
|
partExt->Mbr.PartitionType = inputBuffer->Mbr.PartitionType;
|
|
}
|
|
else
|
|
{
|
|
partExt->Gpt.PartitionType = inputBuffer->Gpt.PartitionType;
|
|
partExt->Gpt.PartitionId = inputBuffer->Gpt.PartitionId;
|
|
partExt->Gpt.Attributes = inputBuffer->Gpt.Attributes;
|
|
|
|
RtlMoveMemory(partExt->Gpt.Name,
|
|
inputBuffer->Gpt.Name,
|
|
sizeof(partExt->Gpt.Name));
|
|
}
|
|
}
|
|
|
|
PartMgrReleaseLayoutLock(fdoExtension);
|
|
|
|
Irp->IoStatus.Information = 0;
|
|
break;
|
|
}
|
|
case IOCTL_DISK_GET_LENGTH_INFO:
|
|
{
|
|
PGET_LENGTH_INFORMATION lengthInfo = Irp->AssociatedIrp.SystemBuffer;
|
|
if (!VerifyIrpOutBufferSize(Irp, sizeof(*lengthInfo)))
|
|
{
|
|
status = STATUS_BUFFER_TOO_SMALL;
|
|
break;
|
|
}
|
|
|
|
PartMgrAcquireLayoutLock(fdoExtension);
|
|
|
|
lengthInfo->Length.QuadPart = partExt->PartitionLength;
|
|
|
|
PartMgrReleaseLayoutLock(fdoExtension);
|
|
|
|
status = STATUS_SUCCESS;
|
|
Irp->IoStatus.Information = sizeof(*lengthInfo);
|
|
break;
|
|
}
|
|
case IOCTL_DISK_VERIFY:
|
|
{
|
|
PVERIFY_INFORMATION verifyInfo = Irp->AssociatedIrp.SystemBuffer;
|
|
if (!VerifyIrpInBufferSize(Irp, sizeof(*verifyInfo)))
|
|
{
|
|
status = STATUS_INFO_LENGTH_MISMATCH;
|
|
break;
|
|
}
|
|
|
|
// Partition device should just adjust the starting offset
|
|
verifyInfo->StartingOffset.QuadPart += partExt->StartingOffset;
|
|
return ForwardIrpAndForget(DeviceObject, Irp);
|
|
}
|
|
case IOCTL_DISK_UPDATE_PROPERTIES:
|
|
{
|
|
fdoExtension->LayoutValid = FALSE;
|
|
IoInvalidateDeviceRelations(fdoExtension->PhysicalDiskDO, BusRelations);
|
|
|
|
status = STATUS_SUCCESS;
|
|
break;
|
|
}
|
|
case IOCTL_STORAGE_MEDIA_REMOVAL:
|
|
{
|
|
return ForwardIrpAndForget(DeviceObject, Irp);
|
|
}
|
|
// volume stuff (most of that should be in volmgr.sys once it is implemented)
|
|
case IOCTL_VOLUME_GET_VOLUME_DISK_EXTENTS:
|
|
{
|
|
PVOLUME_DISK_EXTENTS volExts = Irp->AssociatedIrp.SystemBuffer;
|
|
|
|
// we fill only one extent entry so sizeof(*volExts) is enough
|
|
if (!VerifyIrpOutBufferSize(Irp, sizeof(*volExts)))
|
|
{
|
|
status = STATUS_BUFFER_TOO_SMALL;
|
|
break;
|
|
}
|
|
|
|
PartMgrAcquireLayoutLock(fdoExtension);
|
|
|
|
// the only type of volume we support right now is disk partition
|
|
// so this structure is simple
|
|
|
|
*volExts = (VOLUME_DISK_EXTENTS) {
|
|
.NumberOfDiskExtents = 1,
|
|
.Extents = {{
|
|
.DiskNumber = fdoExtension->DiskData.DeviceNumber,
|
|
.StartingOffset.QuadPart = partExt->StartingOffset,
|
|
.ExtentLength.QuadPart = partExt->PartitionLength
|
|
}}
|
|
};
|
|
|
|
PartMgrReleaseLayoutLock(fdoExtension);
|
|
|
|
status = STATUS_SUCCESS;
|
|
Irp->IoStatus.Information = sizeof(*volExts);
|
|
break;
|
|
}
|
|
case IOCTL_VOLUME_QUERY_VOLUME_NUMBER:
|
|
{
|
|
PVOLUME_NUMBER volNum = Irp->AssociatedIrp.SystemBuffer;
|
|
if (!VerifyIrpOutBufferSize(Irp, sizeof(*volNum)))
|
|
{
|
|
status = STATUS_BUFFER_TOO_SMALL;
|
|
break;
|
|
}
|
|
|
|
PartMgrAcquireLayoutLock(fdoExtension);
|
|
|
|
volNum->VolumeNumber = partExt->VolumeNumber;
|
|
RtlCopyMemory(volNum->VolumeManagerName,
|
|
L"VOLMGR ", // Must be 8 space-padded characters
|
|
sizeof(volNum->VolumeManagerName));
|
|
|
|
PartMgrReleaseLayoutLock(fdoExtension);
|
|
|
|
status = STATUS_SUCCESS;
|
|
Irp->IoStatus.Information = sizeof(*volNum);
|
|
break;
|
|
}
|
|
case IOCTL_VOLUME_IS_PARTITION:
|
|
{
|
|
// The only type of volume we support right now is disk partition
|
|
// so we just return success. A more robust algorithm would be
|
|
// to check whether the volume has only one single extent, that
|
|
// covers the whole partition on which it lies upon. If this is
|
|
// not the case, return STATUS_UNSUCCESSFUL instead.
|
|
status = STATUS_SUCCESS;
|
|
break;
|
|
}
|
|
case IOCTL_VOLUME_ONLINE:
|
|
{
|
|
status = STATUS_SUCCESS;
|
|
break;
|
|
}
|
|
case IOCTL_VOLUME_GET_GPT_ATTRIBUTES:
|
|
{
|
|
PVOLUME_GET_GPT_ATTRIBUTES_INFORMATION gptAttrs = Irp->AssociatedIrp.SystemBuffer;
|
|
if (!VerifyIrpOutBufferSize(Irp, sizeof(*gptAttrs)))
|
|
{
|
|
status = STATUS_BUFFER_TOO_SMALL;
|
|
break;
|
|
}
|
|
|
|
// not supported on anything other than GPT
|
|
if (fdoExtension->DiskData.PartitionStyle != PARTITION_STYLE_GPT)
|
|
{
|
|
status = STATUS_INVALID_DEVICE_REQUEST;
|
|
break;
|
|
}
|
|
|
|
gptAttrs->GptAttributes = partExt->Gpt.Attributes;
|
|
|
|
status = STATUS_SUCCESS;
|
|
Irp->IoStatus.Information = sizeof(*gptAttrs);
|
|
break;
|
|
}
|
|
// mountmgr stuff
|
|
case IOCTL_MOUNTDEV_QUERY_DEVICE_NAME:
|
|
{
|
|
PMOUNTDEV_NAME name = Irp->AssociatedIrp.SystemBuffer;
|
|
|
|
if (!VerifyIrpOutBufferSize(Irp, sizeof(USHORT)))
|
|
{
|
|
status = STATUS_BUFFER_TOO_SMALL;
|
|
break;
|
|
}
|
|
|
|
name->NameLength = partExt->DeviceName.Length;
|
|
|
|
// return NameLength back
|
|
if (!VerifyIrpOutBufferSize(Irp, sizeof(USHORT) + name->NameLength))
|
|
{
|
|
Irp->IoStatus.Information = sizeof(USHORT);
|
|
status = STATUS_BUFFER_OVERFLOW;
|
|
break;
|
|
}
|
|
|
|
RtlCopyMemory(name->Name, partExt->DeviceName.Buffer, name->NameLength);
|
|
|
|
status = STATUS_SUCCESS;
|
|
Irp->IoStatus.Information = sizeof(USHORT) + name->NameLength;
|
|
break;
|
|
}
|
|
case IOCTL_MOUNTDEV_QUERY_UNIQUE_ID:
|
|
{
|
|
PMOUNTDEV_UNIQUE_ID uniqueId = Irp->AssociatedIrp.SystemBuffer;
|
|
|
|
if (!partExt->VolumeInterfaceName.Buffer)
|
|
{
|
|
status = STATUS_INVALID_PARAMETER;
|
|
break;
|
|
}
|
|
|
|
if (!VerifyIrpOutBufferSize(Irp, sizeof(USHORT)))
|
|
{
|
|
status = STATUS_BUFFER_TOO_SMALL;
|
|
break;
|
|
}
|
|
|
|
uniqueId->UniqueIdLength = partExt->VolumeInterfaceName.Length;
|
|
|
|
// return UniqueIdLength back
|
|
if (!VerifyIrpOutBufferSize(Irp, sizeof(USHORT) + uniqueId->UniqueIdLength))
|
|
{
|
|
Irp->IoStatus.Information = sizeof(USHORT);
|
|
status = STATUS_BUFFER_OVERFLOW;
|
|
break;
|
|
}
|
|
|
|
RtlCopyMemory(uniqueId->UniqueId,
|
|
partExt->VolumeInterfaceName.Buffer,
|
|
uniqueId->UniqueIdLength);
|
|
|
|
status = STATUS_SUCCESS;
|
|
Irp->IoStatus.Information = sizeof(USHORT) + uniqueId->UniqueIdLength;
|
|
break;
|
|
}
|
|
default:
|
|
return ForwardIrpAndForget(DeviceObject, Irp);
|
|
}
|
|
|
|
Irp->IoStatus.Status = status;
|
|
IoCompleteRequest(Irp, IO_NO_INCREMENT);
|
|
return status;
|
|
}
|