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![Thomas Faber](/assets/img/avatar_default.png)
NtfsGetVolumeData frees FileRecLookasideList in case of failure, so don't free it again. Dereferencing NewDeviceObject invalidates Vcb.
1006 lines
33 KiB
C
1006 lines
33 KiB
C
/*
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* ReactOS kernel
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* Copyright (C) 2002 ReactOS Team
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* COPYRIGHT: See COPYING in the top level directory
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* PROJECT: ReactOS kernel
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* FILE: drivers/filesystems/ntfs/fsctl.c
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* PURPOSE: NTFS filesystem driver
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* PROGRAMMER: Eric Kohl
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* Valentin Verkhovsky
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* Pierre Schweitzer
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*/
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/* INCLUDES *****************************************************************/
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#include "ntfs.h"
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#include <ntdddisk.h>
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#define NDEBUG
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#include <debug.h>
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/* FUNCTIONS ****************************************************************/
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/*
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* FUNCTION: Tests if the device contains a filesystem that can be mounted
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* by this fsd.
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*/
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static
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NTSTATUS
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NtfsHasFileSystem(PDEVICE_OBJECT DeviceToMount)
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{
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PARTITION_INFORMATION PartitionInfo;
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DISK_GEOMETRY DiskGeometry;
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ULONG ClusterSize, Size, k;
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PBOOT_SECTOR BootSector;
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NTSTATUS Status;
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DPRINT("NtfsHasFileSystem() called\n");
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Size = sizeof(DISK_GEOMETRY);
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Status = NtfsDeviceIoControl(DeviceToMount,
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IOCTL_DISK_GET_DRIVE_GEOMETRY,
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NULL,
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0,
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&DiskGeometry,
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&Size,
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TRUE);
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if (!NT_SUCCESS(Status))
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{
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DPRINT1("NtfsDeviceIoControl() failed (Status %lx)\n", Status);
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return Status;
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}
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if (DiskGeometry.MediaType == FixedMedia)
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{
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/* We have found a hard disk */
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Size = sizeof(PARTITION_INFORMATION);
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Status = NtfsDeviceIoControl(DeviceToMount,
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IOCTL_DISK_GET_PARTITION_INFO,
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NULL,
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0,
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&PartitionInfo,
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&Size,
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TRUE);
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if (!NT_SUCCESS(Status))
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{
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DPRINT1("NtfsDeviceIoControl() failed (Status %lx)\n", Status);
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return Status;
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}
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if (PartitionInfo.PartitionType != PARTITION_IFS)
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{
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DPRINT1("Invalid partition type\n");
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return STATUS_UNRECOGNIZED_VOLUME;
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}
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}
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DPRINT1("BytesPerSector: %lu\n", DiskGeometry.BytesPerSector);
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BootSector = ExAllocatePoolWithTag(NonPagedPool,
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DiskGeometry.BytesPerSector,
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TAG_NTFS);
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if (BootSector == NULL)
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{
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return STATUS_INSUFFICIENT_RESOURCES;
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}
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Status = NtfsReadSectors(DeviceToMount,
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0,
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1,
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DiskGeometry.BytesPerSector,
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(PVOID)BootSector,
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TRUE);
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if (!NT_SUCCESS(Status))
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{
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goto ByeBye;
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}
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/*
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* Check values of different fields. If those fields have not expected
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* values, we fail, to avoid mounting partitions that Windows won't mount.
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*/
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/* OEMID: this field must be NTFS */
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if (RtlCompareMemory(BootSector->OEMID, "NTFS ", 8) != 8)
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{
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DPRINT1("Failed with NTFS-identifier: [%.8s]\n", BootSector->OEMID);
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Status = STATUS_UNRECOGNIZED_VOLUME;
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goto ByeBye;
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}
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/* Unused0: this field must be COMPLETELY null */
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for (k = 0; k < 7; k++)
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{
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if (BootSector->BPB.Unused0[k] != 0)
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{
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DPRINT1("Failed in field Unused0: [%.7s]\n", BootSector->BPB.Unused0);
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Status = STATUS_UNRECOGNIZED_VOLUME;
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goto ByeBye;
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}
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}
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/* Unused3: this field must be COMPLETELY null */
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for (k = 0; k < 4; k++)
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{
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if (BootSector->BPB.Unused3[k] != 0)
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{
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DPRINT1("Failed in field Unused3: [%.4s]\n", BootSector->BPB.Unused3);
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Status = STATUS_UNRECOGNIZED_VOLUME;
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goto ByeBye;
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}
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}
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/* Check cluster size */
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ClusterSize = BootSector->BPB.BytesPerSector * BootSector->BPB.SectorsPerCluster;
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if (ClusterSize != 512 && ClusterSize != 1024 &&
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ClusterSize != 2048 && ClusterSize != 4096 &&
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ClusterSize != 8192 && ClusterSize != 16384 &&
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ClusterSize != 32768 && ClusterSize != 65536)
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{
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DPRINT1("Cluster size failed: %hu, %hu, %hu\n",
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BootSector->BPB.BytesPerSector,
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BootSector->BPB.SectorsPerCluster,
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ClusterSize);
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Status = STATUS_UNRECOGNIZED_VOLUME;
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goto ByeBye;
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}
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ByeBye:
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ExFreePool(BootSector);
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return Status;
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}
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static
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ULONG
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NtfsQueryMftZoneReservation(VOID)
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{
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ULONG ZoneReservation = 1;
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RTL_QUERY_REGISTRY_TABLE QueryTable[2];
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RtlZeroMemory(QueryTable, sizeof(QueryTable));
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QueryTable[0].Flags = RTL_QUERY_REGISTRY_DIRECT;
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QueryTable[0].Name = L"NtfsMftZoneReservation";
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QueryTable[0].EntryContext = &ZoneReservation;
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RtlQueryRegistryValues(RTL_REGISTRY_CONTROL,
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L"FileSystem",
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QueryTable,
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NULL,
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NULL);
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return ZoneReservation;
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}
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static
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NTSTATUS
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NtfsGetVolumeData(PDEVICE_OBJECT DeviceObject,
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PDEVICE_EXTENSION DeviceExt)
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{
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DISK_GEOMETRY DiskGeometry;
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PFILE_RECORD_HEADER VolumeRecord;
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PVOLINFO_ATTRIBUTE VolumeInfo;
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PBOOT_SECTOR BootSector;
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ULONG Size;
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PNTFS_INFO NtfsInfo = &DeviceExt->NtfsInfo;
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NTSTATUS Status;
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PNTFS_ATTR_CONTEXT AttrCtxt;
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PNTFS_ATTR_RECORD Attribute;
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PNTFS_FCB VolumeFcb;
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PWSTR VolumeNameU;
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DPRINT("NtfsGetVolumeData() called\n");
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Size = sizeof(DISK_GEOMETRY);
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Status = NtfsDeviceIoControl(DeviceObject,
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IOCTL_DISK_GET_DRIVE_GEOMETRY,
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NULL,
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0,
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&DiskGeometry,
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&Size,
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TRUE);
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if (!NT_SUCCESS(Status))
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{
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DPRINT("NtfsDeviceIoControl() failed (Status %lx)\n", Status);
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return Status;
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}
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DPRINT("BytesPerSector: %lu\n", DiskGeometry.BytesPerSector);
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BootSector = ExAllocatePoolWithTag(NonPagedPool,
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DiskGeometry.BytesPerSector,
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TAG_NTFS);
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if (BootSector == NULL)
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{
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return STATUS_INSUFFICIENT_RESOURCES;
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}
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Status = NtfsReadSectors(DeviceObject,
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0, /* Partition boot sector */
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1,
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DiskGeometry.BytesPerSector,
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(PVOID)BootSector,
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TRUE);
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if (!NT_SUCCESS(Status))
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{
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ExFreePool(BootSector);
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return Status;
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}
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/* Read data from the bootsector */
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NtfsInfo->BytesPerSector = BootSector->BPB.BytesPerSector;
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NtfsInfo->SectorsPerCluster = BootSector->BPB.SectorsPerCluster;
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NtfsInfo->BytesPerCluster = BootSector->BPB.BytesPerSector * BootSector->BPB.SectorsPerCluster;
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NtfsInfo->SectorCount = BootSector->EBPB.SectorCount;
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NtfsInfo->ClusterCount = DeviceExt->NtfsInfo.SectorCount / (ULONGLONG)DeviceExt->NtfsInfo.SectorsPerCluster;
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NtfsInfo->MftStart.QuadPart = BootSector->EBPB.MftLocation;
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NtfsInfo->MftMirrStart.QuadPart = BootSector->EBPB.MftMirrLocation;
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NtfsInfo->SerialNumber = BootSector->EBPB.SerialNumber;
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if (BootSector->EBPB.ClustersPerMftRecord > 0)
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NtfsInfo->BytesPerFileRecord = BootSector->EBPB.ClustersPerMftRecord * NtfsInfo->BytesPerCluster;
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else
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NtfsInfo->BytesPerFileRecord = 1 << (-BootSector->EBPB.ClustersPerMftRecord);
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if (BootSector->EBPB.ClustersPerIndexRecord > 0)
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NtfsInfo->BytesPerIndexRecord = BootSector->EBPB.ClustersPerIndexRecord * NtfsInfo->BytesPerCluster;
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else
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NtfsInfo->BytesPerIndexRecord = 1 << (-BootSector->EBPB.ClustersPerIndexRecord);
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DPRINT("Boot sector information:\n");
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DPRINT(" BytesPerSector: %hu\n", BootSector->BPB.BytesPerSector);
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DPRINT(" SectorsPerCluster: %hu\n", BootSector->BPB.SectorsPerCluster);
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DPRINT(" SectorCount: %I64u\n", BootSector->EBPB.SectorCount);
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DPRINT(" MftStart: %I64u\n", BootSector->EBPB.MftLocation);
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DPRINT(" MftMirrStart: %I64u\n", BootSector->EBPB.MftMirrLocation);
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DPRINT(" ClustersPerMftRecord: %lx\n", BootSector->EBPB.ClustersPerMftRecord);
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DPRINT(" ClustersPerIndexRecord: %lx\n", BootSector->EBPB.ClustersPerIndexRecord);
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DPRINT(" SerialNumber: %I64x\n", BootSector->EBPB.SerialNumber);
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ExFreePool(BootSector);
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ExInitializeNPagedLookasideList(&DeviceExt->FileRecLookasideList,
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NULL, NULL, 0, NtfsInfo->BytesPerFileRecord, TAG_FILE_REC, 0);
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DeviceExt->MasterFileTable = ExAllocateFromNPagedLookasideList(&DeviceExt->FileRecLookasideList);
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if (DeviceExt->MasterFileTable == NULL)
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{
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ExDeleteNPagedLookasideList(&DeviceExt->FileRecLookasideList);
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return STATUS_INSUFFICIENT_RESOURCES;
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}
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Status = NtfsReadSectors(DeviceObject,
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NtfsInfo->MftStart.u.LowPart * NtfsInfo->SectorsPerCluster,
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NtfsInfo->BytesPerFileRecord / NtfsInfo->BytesPerSector,
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NtfsInfo->BytesPerSector,
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(PVOID)DeviceExt->MasterFileTable,
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TRUE);
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if (!NT_SUCCESS(Status))
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{
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DPRINT1("Failed reading MFT.\n");
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ExFreeToNPagedLookasideList(&DeviceExt->FileRecLookasideList, DeviceExt->MasterFileTable);
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ExDeleteNPagedLookasideList(&DeviceExt->FileRecLookasideList);
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return Status;
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}
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Status = FindAttribute(DeviceExt,
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DeviceExt->MasterFileTable,
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AttributeData,
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L"",
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0,
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&DeviceExt->MFTContext,
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&DeviceExt->MftDataOffset);
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if (!NT_SUCCESS(Status))
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{
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DPRINT1("Can't find data attribute for Master File Table.\n");
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ExFreeToNPagedLookasideList(&DeviceExt->FileRecLookasideList, DeviceExt->MasterFileTable);
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ExDeleteNPagedLookasideList(&DeviceExt->FileRecLookasideList);
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return Status;
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}
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VolumeRecord = ExAllocateFromNPagedLookasideList(&DeviceExt->FileRecLookasideList);
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if (VolumeRecord == NULL)
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{
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DPRINT1("Allocation failed for volume record\n");
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ExFreeToNPagedLookasideList(&DeviceExt->FileRecLookasideList, DeviceExt->MasterFileTable);
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ExDeleteNPagedLookasideList(&DeviceExt->FileRecLookasideList);
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return STATUS_INSUFFICIENT_RESOURCES;
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}
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/* Read Volume File (MFT index 3) */
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DeviceExt->StorageDevice = DeviceObject;
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Status = ReadFileRecord(DeviceExt,
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NTFS_FILE_VOLUME,
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VolumeRecord);
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if (!NT_SUCCESS(Status))
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{
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DPRINT1("Failed reading volume file\n");
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ExFreeToNPagedLookasideList(&DeviceExt->FileRecLookasideList, VolumeRecord);
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ExFreeToNPagedLookasideList(&DeviceExt->FileRecLookasideList, DeviceExt->MasterFileTable);
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ExDeleteNPagedLookasideList(&DeviceExt->FileRecLookasideList);
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return Status;
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}
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/* Enumerate attributes */
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NtfsDumpFileAttributes(DeviceExt, DeviceExt->MasterFileTable);
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/* Enumerate attributes */
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NtfsDumpFileAttributes(DeviceExt, VolumeRecord);
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/* Get volume name */
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Status = FindAttribute(DeviceExt, VolumeRecord, AttributeVolumeName, L"", 0, &AttrCtxt, NULL);
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if (NT_SUCCESS(Status) && AttrCtxt->pRecord->Resident.ValueLength != 0)
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{
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Attribute = AttrCtxt->pRecord;
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DPRINT("Data length %lu\n", AttributeDataLength(Attribute));
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NtfsInfo->VolumeLabelLength =
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min (Attribute->Resident.ValueLength, MAXIMUM_VOLUME_LABEL_LENGTH);
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RtlCopyMemory(NtfsInfo->VolumeLabel,
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(PVOID)((ULONG_PTR)Attribute + Attribute->Resident.ValueOffset),
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NtfsInfo->VolumeLabelLength);
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VolumeNameU = NtfsInfo->VolumeLabel;
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}
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else
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{
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NtfsInfo->VolumeLabelLength = 0;
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VolumeNameU = L"\0";
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}
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if (NT_SUCCESS(Status))
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{
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ReleaseAttributeContext(AttrCtxt);
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}
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VolumeFcb = NtfsCreateFCB(VolumeNameU, NULL, DeviceExt);
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if (VolumeFcb == NULL)
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{
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DPRINT1("Failed allocating volume FCB\n");
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ExFreeToNPagedLookasideList(&DeviceExt->FileRecLookasideList, VolumeRecord);
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ExFreeToNPagedLookasideList(&DeviceExt->FileRecLookasideList, DeviceExt->MasterFileTable);
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ExDeleteNPagedLookasideList(&DeviceExt->FileRecLookasideList);
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return STATUS_INSUFFICIENT_RESOURCES;
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}
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VolumeFcb->Flags = FCB_IS_VOLUME;
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VolumeFcb->RFCB.FileSize.QuadPart = DeviceExt->NtfsInfo.SectorCount * DeviceExt->NtfsInfo.BytesPerSector;
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VolumeFcb->RFCB.ValidDataLength = VolumeFcb->RFCB.FileSize;
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VolumeFcb->RFCB.AllocationSize = VolumeFcb->RFCB.FileSize;
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VolumeFcb->MFTIndex = 0;
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DeviceExt->VolumeFcb = VolumeFcb;
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/* Get volume information */
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Status = FindAttribute(DeviceExt, VolumeRecord, AttributeVolumeInformation, L"", 0, &AttrCtxt, NULL);
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if (NT_SUCCESS(Status) && AttrCtxt->pRecord->Resident.ValueLength != 0)
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{
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Attribute = AttrCtxt->pRecord;
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DPRINT("Data length %lu\n", AttributeDataLength (Attribute));
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VolumeInfo = (PVOID)((ULONG_PTR)Attribute + Attribute->Resident.ValueOffset);
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NtfsInfo->MajorVersion = VolumeInfo->MajorVersion;
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NtfsInfo->MinorVersion = VolumeInfo->MinorVersion;
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NtfsInfo->Flags = VolumeInfo->Flags;
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}
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if (NT_SUCCESS(Status))
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{
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ReleaseAttributeContext(AttrCtxt);
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}
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ExFreeToNPagedLookasideList(&DeviceExt->FileRecLookasideList, VolumeRecord);
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NtfsInfo->MftZoneReservation = NtfsQueryMftZoneReservation();
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return Status;
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}
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static
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NTSTATUS
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NtfsMountVolume(PDEVICE_OBJECT DeviceObject,
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PIRP Irp)
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{
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PDEVICE_OBJECT NewDeviceObject = NULL;
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PDEVICE_OBJECT DeviceToMount;
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PIO_STACK_LOCATION Stack;
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PNTFS_FCB Fcb = NULL;
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PNTFS_CCB Ccb = NULL;
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PNTFS_VCB Vcb = NULL;
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NTSTATUS Status;
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BOOLEAN Lookaside = FALSE;
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DPRINT("NtfsMountVolume() called\n");
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if (DeviceObject != NtfsGlobalData->DeviceObject)
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{
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Status = STATUS_INVALID_DEVICE_REQUEST;
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goto ByeBye;
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}
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Stack = IoGetCurrentIrpStackLocation(Irp);
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DeviceToMount = Stack->Parameters.MountVolume.DeviceObject;
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Status = NtfsHasFileSystem(DeviceToMount);
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if (!NT_SUCCESS(Status))
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{
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goto ByeBye;
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}
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Status = IoCreateDevice(NtfsGlobalData->DriverObject,
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sizeof(DEVICE_EXTENSION),
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NULL,
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FILE_DEVICE_DISK_FILE_SYSTEM,
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0,
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FALSE,
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&NewDeviceObject);
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if (!NT_SUCCESS(Status))
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goto ByeBye;
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NewDeviceObject->Flags |= DO_DIRECT_IO;
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Vcb = (PVOID)NewDeviceObject->DeviceExtension;
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RtlZeroMemory(Vcb, sizeof(NTFS_VCB));
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Vcb->Identifier.Type = NTFS_TYPE_VCB;
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Vcb->Identifier.Size = sizeof(NTFS_TYPE_VCB);
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Status = NtfsGetVolumeData(DeviceToMount,
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Vcb);
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if (!NT_SUCCESS(Status))
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goto ByeBye;
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Lookaside = TRUE;
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NewDeviceObject->Vpb = DeviceToMount->Vpb;
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Vcb->StorageDevice = DeviceToMount;
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Vcb->StorageDevice->Vpb->DeviceObject = NewDeviceObject;
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Vcb->StorageDevice->Vpb->RealDevice = Vcb->StorageDevice;
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Vcb->StorageDevice->Vpb->Flags |= VPB_MOUNTED;
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NewDeviceObject->StackSize = Vcb->StorageDevice->StackSize + 1;
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NewDeviceObject->Flags &= ~DO_DEVICE_INITIALIZING;
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Vcb->StreamFileObject = IoCreateStreamFileObject(NULL,
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Vcb->StorageDevice);
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InitializeListHead(&Vcb->FcbListHead);
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Fcb = NtfsCreateFCB(NULL, NULL, Vcb);
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if (Fcb == NULL)
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{
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Status = STATUS_INSUFFICIENT_RESOURCES;
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goto ByeBye;
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}
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Ccb = ExAllocatePoolWithTag(NonPagedPool,
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sizeof(NTFS_CCB),
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TAG_CCB);
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if (Ccb == NULL)
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{
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Status = STATUS_INSUFFICIENT_RESOURCES;
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goto ByeBye;
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}
|
|
|
|
RtlZeroMemory(Ccb, sizeof(NTFS_CCB));
|
|
|
|
Ccb->Identifier.Type = NTFS_TYPE_CCB;
|
|
Ccb->Identifier.Size = sizeof(NTFS_TYPE_CCB);
|
|
|
|
Vcb->StreamFileObject->FsContext = Fcb;
|
|
Vcb->StreamFileObject->FsContext2 = Ccb;
|
|
Vcb->StreamFileObject->SectionObjectPointer = &Fcb->SectionObjectPointers;
|
|
Vcb->StreamFileObject->PrivateCacheMap = NULL;
|
|
Vcb->StreamFileObject->Vpb = Vcb->Vpb;
|
|
Ccb->PtrFileObject = Vcb->StreamFileObject;
|
|
Fcb->FileObject = Vcb->StreamFileObject;
|
|
Fcb->Vcb = (PDEVICE_EXTENSION)Vcb->StorageDevice;
|
|
|
|
Fcb->Flags = FCB_IS_VOLUME_STREAM;
|
|
|
|
Fcb->RFCB.FileSize.QuadPart = Vcb->NtfsInfo.SectorCount * Vcb->NtfsInfo.BytesPerSector;
|
|
Fcb->RFCB.ValidDataLength.QuadPart = Vcb->NtfsInfo.SectorCount * Vcb->NtfsInfo.BytesPerSector;
|
|
Fcb->RFCB.AllocationSize.QuadPart = Vcb->NtfsInfo.SectorCount * Vcb->NtfsInfo.BytesPerSector; /* Correct? */
|
|
|
|
// Fcb->Entry.ExtentLocationL = 0;
|
|
// Fcb->Entry.DataLengthL = DeviceExt->CdInfo.VolumeSpaceSize * BLOCKSIZE;
|
|
|
|
_SEH2_TRY
|
|
{
|
|
CcInitializeCacheMap(Vcb->StreamFileObject,
|
|
(PCC_FILE_SIZES)(&Fcb->RFCB.AllocationSize),
|
|
TRUE,
|
|
&(NtfsGlobalData->CacheMgrCallbacks),
|
|
Fcb);
|
|
}
|
|
_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
|
|
{
|
|
Status = _SEH2_GetExceptionCode();
|
|
goto ByeBye;
|
|
}
|
|
_SEH2_END;
|
|
|
|
ExInitializeResourceLite(&Vcb->DirResource);
|
|
|
|
KeInitializeSpinLock(&Vcb->FcbListLock);
|
|
|
|
/* Get serial number */
|
|
NewDeviceObject->Vpb->SerialNumber = Vcb->NtfsInfo.SerialNumber;
|
|
|
|
/* Get volume label */
|
|
NewDeviceObject->Vpb->VolumeLabelLength = Vcb->NtfsInfo.VolumeLabelLength;
|
|
RtlCopyMemory(NewDeviceObject->Vpb->VolumeLabel,
|
|
Vcb->NtfsInfo.VolumeLabel,
|
|
Vcb->NtfsInfo.VolumeLabelLength);
|
|
|
|
FsRtlNotifyVolumeEvent(Vcb->StreamFileObject, FSRTL_VOLUME_MOUNT);
|
|
|
|
Status = STATUS_SUCCESS;
|
|
|
|
ByeBye:
|
|
if (!NT_SUCCESS(Status))
|
|
{
|
|
/* Cleanup */
|
|
if (Vcb && Vcb->StreamFileObject)
|
|
ObDereferenceObject(Vcb->StreamFileObject);
|
|
|
|
if (Fcb)
|
|
NtfsDestroyFCB(Fcb);
|
|
|
|
if (Ccb)
|
|
ExFreePool(Ccb);
|
|
|
|
if (Lookaside)
|
|
ExDeleteNPagedLookasideList(&Vcb->FileRecLookasideList);
|
|
|
|
if (NewDeviceObject)
|
|
IoDeleteDevice(NewDeviceObject);
|
|
}
|
|
|
|
DPRINT("NtfsMountVolume() done (Status: %lx)\n", Status);
|
|
|
|
return Status;
|
|
}
|
|
|
|
|
|
static
|
|
NTSTATUS
|
|
NtfsVerifyVolume(PDEVICE_OBJECT DeviceObject,
|
|
PIRP Irp)
|
|
{
|
|
UNREFERENCED_PARAMETER(DeviceObject);
|
|
UNREFERENCED_PARAMETER(Irp);
|
|
DPRINT1("NtfsVerifyVolume() called\n");
|
|
return STATUS_WRONG_VOLUME;
|
|
}
|
|
|
|
|
|
static
|
|
NTSTATUS
|
|
GetNfsVolumeData(PDEVICE_EXTENSION DeviceExt,
|
|
PIRP Irp)
|
|
{
|
|
PIO_STACK_LOCATION Stack;
|
|
PNTFS_VOLUME_DATA_BUFFER DataBuffer;
|
|
PNTFS_ATTR_RECORD Attribute;
|
|
FIND_ATTR_CONTXT Context;
|
|
NTSTATUS Status;
|
|
|
|
DataBuffer = (PNTFS_VOLUME_DATA_BUFFER)Irp->AssociatedIrp.SystemBuffer;
|
|
Stack = IoGetCurrentIrpStackLocation(Irp);
|
|
|
|
if (Stack->Parameters.FileSystemControl.OutputBufferLength < sizeof(NTFS_VOLUME_DATA_BUFFER) ||
|
|
Irp->UserBuffer == NULL)
|
|
{
|
|
DPRINT1("Invalid output! %d %p\n", Stack->Parameters.FileSystemControl.OutputBufferLength, Irp->UserBuffer);
|
|
return STATUS_INVALID_PARAMETER;
|
|
}
|
|
|
|
DataBuffer->VolumeSerialNumber.QuadPart = DeviceExt->NtfsInfo.SerialNumber;
|
|
DataBuffer->NumberSectors.QuadPart = DeviceExt->NtfsInfo.SectorCount;
|
|
DataBuffer->TotalClusters.QuadPart = DeviceExt->NtfsInfo.ClusterCount;
|
|
DataBuffer->FreeClusters.QuadPart = NtfsGetFreeClusters(DeviceExt);
|
|
DataBuffer->TotalReserved.QuadPart = 0LL; // FIXME
|
|
DataBuffer->BytesPerSector = DeviceExt->NtfsInfo.BytesPerSector;
|
|
DataBuffer->BytesPerCluster = DeviceExt->NtfsInfo.BytesPerCluster;
|
|
DataBuffer->BytesPerFileRecordSegment = DeviceExt->NtfsInfo.BytesPerFileRecord;
|
|
DataBuffer->ClustersPerFileRecordSegment = DeviceExt->NtfsInfo.BytesPerFileRecord / DeviceExt->NtfsInfo.BytesPerCluster;
|
|
DataBuffer->MftStartLcn.QuadPart = DeviceExt->NtfsInfo.MftStart.QuadPart;
|
|
DataBuffer->Mft2StartLcn.QuadPart = DeviceExt->NtfsInfo.MftMirrStart.QuadPart;
|
|
DataBuffer->MftZoneStart.QuadPart = 0; // FIXME
|
|
DataBuffer->MftZoneEnd.QuadPart = 0; // FIXME
|
|
|
|
Status = FindFirstAttribute(&Context, DeviceExt, DeviceExt->MasterFileTable, FALSE, &Attribute);
|
|
while (NT_SUCCESS(Status))
|
|
{
|
|
if (Attribute->Type == AttributeData)
|
|
{
|
|
ASSERT(Attribute->IsNonResident);
|
|
DataBuffer->MftValidDataLength.QuadPart = Attribute->NonResident.DataSize;
|
|
|
|
break;
|
|
}
|
|
|
|
Status = FindNextAttribute(&Context, &Attribute);
|
|
}
|
|
FindCloseAttribute(&Context);
|
|
|
|
Irp->IoStatus.Information = sizeof(NTFS_VOLUME_DATA_BUFFER);
|
|
|
|
if (Stack->Parameters.FileSystemControl.OutputBufferLength >= sizeof(NTFS_EXTENDED_VOLUME_DATA) + sizeof(NTFS_VOLUME_DATA_BUFFER))
|
|
{
|
|
PNTFS_EXTENDED_VOLUME_DATA ExtendedData = (PNTFS_EXTENDED_VOLUME_DATA)((ULONG_PTR)Irp->UserBuffer + sizeof(NTFS_VOLUME_DATA_BUFFER));
|
|
|
|
ExtendedData->ByteCount = sizeof(NTFS_EXTENDED_VOLUME_DATA);
|
|
ExtendedData->MajorVersion = DeviceExt->NtfsInfo.MajorVersion;
|
|
ExtendedData->MinorVersion = DeviceExt->NtfsInfo.MinorVersion;
|
|
Irp->IoStatus.Information += sizeof(NTFS_EXTENDED_VOLUME_DATA);
|
|
}
|
|
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
|
|
static
|
|
NTSTATUS
|
|
GetNtfsFileRecord(PDEVICE_EXTENSION DeviceExt,
|
|
PIRP Irp)
|
|
{
|
|
NTSTATUS Status;
|
|
PIO_STACK_LOCATION Stack;
|
|
PNTFS_FILE_RECORD_INPUT_BUFFER InputBuffer;
|
|
PFILE_RECORD_HEADER FileRecord;
|
|
PNTFS_FILE_RECORD_OUTPUT_BUFFER OutputBuffer;
|
|
ULONGLONG MFTRecord;
|
|
|
|
Stack = IoGetCurrentIrpStackLocation(Irp);
|
|
|
|
if (Stack->Parameters.FileSystemControl.InputBufferLength < sizeof(NTFS_FILE_RECORD_INPUT_BUFFER) ||
|
|
Irp->AssociatedIrp.SystemBuffer == NULL)
|
|
{
|
|
DPRINT1("Invalid input! %d %p\n", Stack->Parameters.FileSystemControl.InputBufferLength, Irp->AssociatedIrp.SystemBuffer);
|
|
return STATUS_INVALID_PARAMETER;
|
|
}
|
|
|
|
if (Stack->Parameters.FileSystemControl.OutputBufferLength < (FIELD_OFFSET(NTFS_FILE_RECORD_OUTPUT_BUFFER, FileRecordBuffer) + DeviceExt->NtfsInfo.BytesPerFileRecord) ||
|
|
Irp->AssociatedIrp.SystemBuffer == NULL)
|
|
{
|
|
DPRINT1("Invalid output! %d %p\n", Stack->Parameters.FileSystemControl.OutputBufferLength, Irp->AssociatedIrp.SystemBuffer);
|
|
return STATUS_BUFFER_TOO_SMALL;
|
|
}
|
|
|
|
FileRecord = ExAllocateFromNPagedLookasideList(&DeviceExt->FileRecLookasideList);
|
|
if (FileRecord == NULL)
|
|
{
|
|
return STATUS_INSUFFICIENT_RESOURCES;
|
|
}
|
|
|
|
InputBuffer = (PNTFS_FILE_RECORD_INPUT_BUFFER)Irp->AssociatedIrp.SystemBuffer;
|
|
|
|
MFTRecord = InputBuffer->FileReferenceNumber.QuadPart;
|
|
DPRINT1("Requesting: %I64x\n", MFTRecord);
|
|
|
|
do
|
|
{
|
|
Status = ReadFileRecord(DeviceExt, MFTRecord, FileRecord);
|
|
if (NT_SUCCESS(Status))
|
|
{
|
|
if (FileRecord->Flags & FRH_IN_USE)
|
|
{
|
|
break;
|
|
}
|
|
}
|
|
|
|
--MFTRecord;
|
|
} while (TRUE);
|
|
|
|
DPRINT1("Returning: %I64x\n", MFTRecord);
|
|
OutputBuffer = (PNTFS_FILE_RECORD_OUTPUT_BUFFER)Irp->AssociatedIrp.SystemBuffer;
|
|
OutputBuffer->FileReferenceNumber.QuadPart = MFTRecord;
|
|
OutputBuffer->FileRecordLength = DeviceExt->NtfsInfo.BytesPerFileRecord;
|
|
RtlCopyMemory(OutputBuffer->FileRecordBuffer, FileRecord, DeviceExt->NtfsInfo.BytesPerFileRecord);
|
|
|
|
ExFreeToNPagedLookasideList(&DeviceExt->FileRecLookasideList, FileRecord);
|
|
|
|
Irp->IoStatus.Information = FIELD_OFFSET(NTFS_FILE_RECORD_OUTPUT_BUFFER, FileRecordBuffer) + DeviceExt->NtfsInfo.BytesPerFileRecord;
|
|
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
|
|
static
|
|
NTSTATUS
|
|
GetVolumeBitmap(PDEVICE_EXTENSION DeviceExt,
|
|
PIRP Irp)
|
|
{
|
|
NTSTATUS Status = STATUS_SUCCESS;
|
|
PIO_STACK_LOCATION Stack;
|
|
PVOLUME_BITMAP_BUFFER BitmapBuffer;
|
|
LONGLONG StartingLcn;
|
|
PFILE_RECORD_HEADER BitmapRecord;
|
|
PNTFS_ATTR_CONTEXT DataContext;
|
|
ULONGLONG TotalClusters;
|
|
ULONGLONG ToCopy;
|
|
BOOLEAN Overflow = FALSE;
|
|
|
|
DPRINT("GetVolumeBitmap(%p, %p)\n", DeviceExt, Irp);
|
|
|
|
Stack = IoGetCurrentIrpStackLocation(Irp);
|
|
|
|
if (Stack->Parameters.FileSystemControl.InputBufferLength < sizeof(STARTING_LCN_INPUT_BUFFER))
|
|
{
|
|
DPRINT1("Invalid input! %d\n", Stack->Parameters.FileSystemControl.InputBufferLength);
|
|
return STATUS_INVALID_PARAMETER;
|
|
}
|
|
|
|
if (Stack->Parameters.FileSystemControl.OutputBufferLength < sizeof(VOLUME_BITMAP_BUFFER))
|
|
{
|
|
DPRINT1("Invalid output! %d\n", Stack->Parameters.FileSystemControl.OutputBufferLength);
|
|
return STATUS_BUFFER_TOO_SMALL;
|
|
}
|
|
|
|
BitmapBuffer = NtfsGetUserBuffer(Irp, FALSE);
|
|
if (Irp->RequestorMode == UserMode)
|
|
{
|
|
_SEH2_TRY
|
|
{
|
|
ProbeForRead(Stack->Parameters.FileSystemControl.Type3InputBuffer,
|
|
Stack->Parameters.FileSystemControl.InputBufferLength,
|
|
sizeof(CHAR));
|
|
ProbeForWrite(BitmapBuffer, Stack->Parameters.FileSystemControl.OutputBufferLength,
|
|
sizeof(CHAR));
|
|
}
|
|
_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
|
|
{
|
|
Status = _SEH2_GetExceptionCode();
|
|
}
|
|
_SEH2_END;
|
|
}
|
|
else
|
|
{
|
|
if (Stack->Parameters.FileSystemControl.Type3InputBuffer == NULL ||
|
|
BitmapBuffer == NULL)
|
|
{
|
|
Status = STATUS_INVALID_PARAMETER;
|
|
}
|
|
}
|
|
|
|
if (!NT_SUCCESS(Status))
|
|
{
|
|
DPRINT1("Invalid buffer! %p %p\n", Stack->Parameters.FileSystemControl.Type3InputBuffer, BitmapBuffer);
|
|
return Status;
|
|
}
|
|
|
|
StartingLcn = ((PSTARTING_LCN_INPUT_BUFFER)Stack->Parameters.FileSystemControl.Type3InputBuffer)->StartingLcn.QuadPart;
|
|
if (StartingLcn > DeviceExt->NtfsInfo.ClusterCount)
|
|
{
|
|
DPRINT1("Requested bitmap start beyond partition end: %I64x %I64x\n", DeviceExt->NtfsInfo.ClusterCount, StartingLcn);
|
|
return STATUS_INVALID_PARAMETER;
|
|
}
|
|
|
|
/* Round down to a multiple of 8 */
|
|
StartingLcn = StartingLcn & ~7;
|
|
TotalClusters = DeviceExt->NtfsInfo.ClusterCount - StartingLcn;
|
|
ToCopy = TotalClusters / 8;
|
|
if ((ToCopy + FIELD_OFFSET(VOLUME_BITMAP_BUFFER, Buffer)) > Stack->Parameters.FileSystemControl.OutputBufferLength)
|
|
{
|
|
DPRINT1("Buffer too small: %x, needed: %x\n", Stack->Parameters.FileSystemControl.OutputBufferLength, (ToCopy + FIELD_OFFSET(VOLUME_BITMAP_BUFFER, Buffer)));
|
|
Overflow = TRUE;
|
|
ToCopy = Stack->Parameters.FileSystemControl.OutputBufferLength - FIELD_OFFSET(VOLUME_BITMAP_BUFFER, Buffer);
|
|
}
|
|
|
|
BitmapRecord = ExAllocateFromNPagedLookasideList(&DeviceExt->FileRecLookasideList);
|
|
if (BitmapRecord == NULL)
|
|
{
|
|
return STATUS_INSUFFICIENT_RESOURCES;
|
|
}
|
|
|
|
Status = ReadFileRecord(DeviceExt, NTFS_FILE_BITMAP, BitmapRecord);
|
|
if (!NT_SUCCESS(Status))
|
|
{
|
|
DPRINT1("Failed reading volume bitmap: %lx\n", Status);
|
|
ExFreeToNPagedLookasideList(&DeviceExt->FileRecLookasideList, BitmapRecord);
|
|
return Status;
|
|
}
|
|
|
|
Status = FindAttribute(DeviceExt, BitmapRecord, AttributeData, L"", 0, &DataContext, NULL);
|
|
if (!NT_SUCCESS(Status))
|
|
{
|
|
DPRINT1("Failed find $DATA for bitmap: %lx\n", Status);
|
|
ExFreeToNPagedLookasideList(&DeviceExt->FileRecLookasideList, BitmapRecord);
|
|
return Status;
|
|
}
|
|
|
|
BitmapBuffer->StartingLcn.QuadPart = StartingLcn;
|
|
BitmapBuffer->BitmapSize.QuadPart = ToCopy * 8;
|
|
|
|
Irp->IoStatus.Information = FIELD_OFFSET(VOLUME_BITMAP_BUFFER, Buffer);
|
|
_SEH2_TRY
|
|
{
|
|
Irp->IoStatus.Information += ReadAttribute(DeviceExt, DataContext, StartingLcn / 8, (PCHAR)BitmapBuffer->Buffer, ToCopy);
|
|
Status = (Overflow ? STATUS_BUFFER_OVERFLOW : STATUS_SUCCESS);
|
|
}
|
|
_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
|
|
{
|
|
Status = _SEH2_GetExceptionCode();
|
|
}
|
|
_SEH2_END;
|
|
ReleaseAttributeContext(DataContext);
|
|
ExFreeToNPagedLookasideList(&DeviceExt->FileRecLookasideList, BitmapRecord);
|
|
|
|
return Status;
|
|
}
|
|
|
|
|
|
static
|
|
NTSTATUS
|
|
LockOrUnlockVolume(PDEVICE_EXTENSION DeviceExt,
|
|
PIRP Irp,
|
|
BOOLEAN Lock)
|
|
{
|
|
PFILE_OBJECT FileObject;
|
|
PNTFS_FCB Fcb;
|
|
PIO_STACK_LOCATION Stack;
|
|
|
|
DPRINT("LockOrUnlockVolume(%p, %p, %d)\n", DeviceExt, Irp, Lock);
|
|
|
|
Stack = IoGetCurrentIrpStackLocation(Irp);
|
|
FileObject = Stack->FileObject;
|
|
Fcb = FileObject->FsContext;
|
|
|
|
/* Only allow locking with the volume open */
|
|
if (!(Fcb->Flags & FCB_IS_VOLUME))
|
|
{
|
|
return STATUS_ACCESS_DENIED;
|
|
}
|
|
|
|
/* Bail out if it's already in the demanded state */
|
|
if (((DeviceExt->Flags & VCB_VOLUME_LOCKED) && Lock) ||
|
|
(!(DeviceExt->Flags & VCB_VOLUME_LOCKED) && !Lock))
|
|
{
|
|
return STATUS_ACCESS_DENIED;
|
|
}
|
|
|
|
/* Deny locking if we're not alone */
|
|
if (Lock && DeviceExt->OpenHandleCount != 1)
|
|
{
|
|
return STATUS_ACCESS_DENIED;
|
|
}
|
|
|
|
/* Finally, proceed */
|
|
if (Lock)
|
|
{
|
|
DeviceExt->Flags |= VCB_VOLUME_LOCKED;
|
|
}
|
|
else
|
|
{
|
|
DeviceExt->Flags &= ~VCB_VOLUME_LOCKED;
|
|
}
|
|
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
|
|
static
|
|
NTSTATUS
|
|
NtfsUserFsRequest(PDEVICE_OBJECT DeviceObject,
|
|
PIRP Irp)
|
|
{
|
|
NTSTATUS Status;
|
|
PIO_STACK_LOCATION Stack;
|
|
PDEVICE_EXTENSION DeviceExt;
|
|
|
|
DPRINT("NtfsUserFsRequest(%p, %p)\n", DeviceObject, Irp);
|
|
|
|
Stack = IoGetCurrentIrpStackLocation(Irp);
|
|
DeviceExt = DeviceObject->DeviceExtension;
|
|
switch (Stack->Parameters.FileSystemControl.FsControlCode)
|
|
{
|
|
case FSCTL_CREATE_USN_JOURNAL:
|
|
case FSCTL_DELETE_USN_JOURNAL:
|
|
case FSCTL_ENUM_USN_DATA:
|
|
case FSCTL_EXTEND_VOLUME:
|
|
//case FSCTL_GET_RETRIEVAL_POINTER_BASE:
|
|
case FSCTL_GET_RETRIEVAL_POINTERS:
|
|
//case FSCTL_LOOKUP_STREAM_FROM_CLUSTER:
|
|
case FSCTL_MARK_HANDLE:
|
|
case FSCTL_MOVE_FILE:
|
|
case FSCTL_QUERY_USN_JOURNAL:
|
|
case FSCTL_READ_FILE_USN_DATA:
|
|
case FSCTL_READ_USN_JOURNAL:
|
|
//case FSCTL_SHRINK_VOLUME:
|
|
case FSCTL_WRITE_USN_CLOSE_RECORD:
|
|
UNIMPLEMENTED;
|
|
DPRINT1("Unimplemented user request: %x\n", Stack->Parameters.FileSystemControl.FsControlCode);
|
|
Status = STATUS_NOT_IMPLEMENTED;
|
|
break;
|
|
|
|
case FSCTL_LOCK_VOLUME:
|
|
Status = LockOrUnlockVolume(DeviceExt, Irp, TRUE);
|
|
break;
|
|
|
|
case FSCTL_UNLOCK_VOLUME:
|
|
Status = LockOrUnlockVolume(DeviceExt, Irp, FALSE);
|
|
break;
|
|
|
|
case FSCTL_GET_NTFS_VOLUME_DATA:
|
|
Status = GetNfsVolumeData(DeviceExt, Irp);
|
|
break;
|
|
|
|
case FSCTL_GET_NTFS_FILE_RECORD:
|
|
Status = GetNtfsFileRecord(DeviceExt, Irp);
|
|
break;
|
|
|
|
case FSCTL_GET_VOLUME_BITMAP:
|
|
Status = GetVolumeBitmap(DeviceExt, Irp);
|
|
break;
|
|
|
|
default:
|
|
DPRINT("Invalid user request: %x\n", Stack->Parameters.FileSystemControl.FsControlCode);
|
|
Status = STATUS_INVALID_DEVICE_REQUEST;
|
|
break;
|
|
}
|
|
|
|
return Status;
|
|
}
|
|
|
|
|
|
NTSTATUS
|
|
NtfsFileSystemControl(PNTFS_IRP_CONTEXT IrpContext)
|
|
{
|
|
NTSTATUS Status;
|
|
PIRP Irp;
|
|
PDEVICE_OBJECT DeviceObject;
|
|
|
|
DPRINT("NtfsFileSystemControl() called\n");
|
|
|
|
DeviceObject = IrpContext->DeviceObject;
|
|
Irp = IrpContext->Irp;
|
|
Irp->IoStatus.Information = 0;
|
|
|
|
switch (IrpContext->MinorFunction)
|
|
{
|
|
case IRP_MN_KERNEL_CALL:
|
|
DPRINT1("NTFS: IRP_MN_USER_FS_REQUEST\n");
|
|
Status = STATUS_INVALID_DEVICE_REQUEST;
|
|
break;
|
|
|
|
case IRP_MN_USER_FS_REQUEST:
|
|
Status = NtfsUserFsRequest(DeviceObject, Irp);
|
|
break;
|
|
|
|
case IRP_MN_MOUNT_VOLUME:
|
|
DPRINT("NTFS: IRP_MN_MOUNT_VOLUME\n");
|
|
Status = NtfsMountVolume(DeviceObject, Irp);
|
|
break;
|
|
|
|
case IRP_MN_VERIFY_VOLUME:
|
|
DPRINT1("NTFS: IRP_MN_VERIFY_VOLUME\n");
|
|
Status = NtfsVerifyVolume(DeviceObject, Irp);
|
|
break;
|
|
|
|
default:
|
|
DPRINT1("NTFS FSC: MinorFunction %d\n", IrpContext->MinorFunction);
|
|
Status = STATUS_INVALID_DEVICE_REQUEST;
|
|
break;
|
|
}
|
|
|
|
return Status;
|
|
}
|
|
|
|
/* EOF */
|