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![Amine Khaldi](/assets/img/avatar_default.png)
* Create a branch for some evul shell experiments. svn path=/branches/shell-experiments/; revision=61927
540 lines
17 KiB
C
540 lines
17 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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DPRINT1("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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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 MftRecord;
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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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PATTRIBUTE Attribute;
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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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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->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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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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MftRecord = ExAllocatePoolWithTag(NonPagedPool,
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NtfsInfo->BytesPerFileRecord,
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TAG_NTFS);
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if (MftRecord == 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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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)MftRecord,
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TRUE);
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if (!NT_SUCCESS(Status))
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{
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ExFreePool(MftRecord);
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return Status;
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}
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VolumeRecord = ExAllocatePoolWithTag(NonPagedPool,
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NtfsInfo->BytesPerFileRecord,
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TAG_NTFS);
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if (VolumeRecord == NULL)
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{
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ExFreePool(MftRecord);
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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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3,
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VolumeRecord,
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MftRecord);
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if (!NT_SUCCESS(Status))
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{
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ExFreePool(MftRecord);
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return Status;
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}
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/* Enumerate attributes */
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NtfsDumpFileAttributes (MftRecord);
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/* Enumerate attributes */
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NtfsDumpFileAttributes (VolumeRecord);
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/* Get volume name */
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Attribute = FindAttribute (VolumeRecord, AttributeVolumeName, NULL);
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DPRINT("Attribute %p\n", Attribute);
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if (Attribute != NULL && ((PRESIDENT_ATTRIBUTE)Attribute)->ValueLength != 0)
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{
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DPRINT("Data length %lu\n", AttributeDataLength (Attribute));
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NtfsInfo->VolumeLabelLength =
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min (((PRESIDENT_ATTRIBUTE)Attribute)->ValueLength, MAXIMUM_VOLUME_LABEL_LENGTH);
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RtlCopyMemory(NtfsInfo->VolumeLabel,
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(PVOID)((ULONG_PTR)Attribute + ((PRESIDENT_ATTRIBUTE)Attribute)->ValueOffset),
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NtfsInfo->VolumeLabelLength);
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}
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else
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{
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NtfsInfo->VolumeLabelLength = 0;
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}
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/* Get volume information */
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Attribute = FindAttribute (VolumeRecord, AttributeVolumeInformation, NULL);
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DPRINT("Attribute %p\n", Attribute);
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if (Attribute != NULL && ((PRESIDENT_ATTRIBUTE)Attribute)->ValueLength != 0)
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{
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DPRINT("Data length %lu\n", AttributeDataLength (Attribute));
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VolumeInfo = (PVOID)((ULONG_PTR)Attribute + ((PRESIDENT_ATTRIBUTE)Attribute)->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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ExFreePool(MftRecord);
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ExFreePool(VolumeRecord);
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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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DPRINT1("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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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, 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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}
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RtlZeroMemory(Ccb, sizeof(NTFS_CCB));
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Ccb->Identifier.Type = NTFS_TYPE_CCB;
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Ccb->Identifier.Size = sizeof(NTFS_TYPE_CCB);
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Vcb->StreamFileObject->FsContext = Fcb;
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Vcb->StreamFileObject->FsContext2 = Ccb;
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Vcb->StreamFileObject->SectionObjectPointer = &Fcb->SectionObjectPointers;
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Vcb->StreamFileObject->PrivateCacheMap = NULL;
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Vcb->StreamFileObject->Vpb = Vcb->Vpb;
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Ccb->PtrFileObject = Vcb->StreamFileObject;
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Fcb->FileObject = Vcb->StreamFileObject;
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Fcb->Vcb = (PDEVICE_EXTENSION)Vcb->StorageDevice;
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Fcb->Flags = FCB_IS_VOLUME_STREAM;
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Fcb->RFCB.FileSize.QuadPart = Vcb->NtfsInfo.SectorCount * Vcb->NtfsInfo.BytesPerSector;
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Fcb->RFCB.ValidDataLength.QuadPart = Vcb->NtfsInfo.SectorCount * Vcb->NtfsInfo.BytesPerSector;
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Fcb->RFCB.AllocationSize.QuadPart = Vcb->NtfsInfo.SectorCount * Vcb->NtfsInfo.BytesPerSector; /* Correct? */
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// Fcb->Entry.ExtentLocationL = 0;
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// Fcb->Entry.DataLengthL = DeviceExt->CdInfo.VolumeSpaceSize * BLOCKSIZE;
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CcInitializeCacheMap(Vcb->StreamFileObject,
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(PCC_FILE_SIZES)(&Fcb->RFCB.AllocationSize),
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FALSE,
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&(NtfsGlobalData->CacheMgrCallbacks),
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Fcb);
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ExInitializeResourceLite(&Vcb->DirResource);
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KeInitializeSpinLock(&Vcb->FcbListLock);
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/* Get serial number */
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NewDeviceObject->Vpb->SerialNumber = Vcb->NtfsInfo.SerialNumber;
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/* Get volume label */
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NewDeviceObject->Vpb->VolumeLabelLength = Vcb->NtfsInfo.VolumeLabelLength;
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RtlCopyMemory(NewDeviceObject->Vpb->VolumeLabel,
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Vcb->NtfsInfo.VolumeLabel,
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Vcb->NtfsInfo.VolumeLabelLength);
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Status = STATUS_SUCCESS;
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ByeBye:
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if (!NT_SUCCESS(Status))
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{
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/* Cleanup */
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if (Vcb && Vcb->StreamFileObject)
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ObDereferenceObject(Vcb->StreamFileObject);
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if (Fcb)
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ExFreePool(Fcb);
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if (Ccb)
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ExFreePool(Ccb);
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if (NewDeviceObject)
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IoDeleteDevice(NewDeviceObject);
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}
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DPRINT("NtfsMountVolume() done (Status: %lx)\n", Status);
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return Status;
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}
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static
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NTSTATUS
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NtfsVerifyVolume(PDEVICE_OBJECT DeviceObject,
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PIRP Irp)
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{
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UNREFERENCED_PARAMETER(DeviceObject);
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UNREFERENCED_PARAMETER(Irp);
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DPRINT1("NtfsVerifyVolume() called\n");
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return STATUS_WRONG_VOLUME;
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}
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NTSTATUS
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NTAPI
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NtfsFsdFileSystemControl(PDEVICE_OBJECT DeviceObject,
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PIRP Irp)
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{
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PIO_STACK_LOCATION Stack;
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NTSTATUS Status;
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DPRINT1("NtfsFileSystemControl() called\n");
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Stack = IoGetCurrentIrpStackLocation(Irp);
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switch (Stack->MinorFunction)
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{
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case IRP_MN_KERNEL_CALL:
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case IRP_MN_USER_FS_REQUEST:
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DPRINT("NTFS: IRP_MN_USER_FS_REQUEST/IRP_MN_KERNEL_CALL\n");
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Status = STATUS_INVALID_DEVICE_REQUEST;
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break;
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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:
|
|
DPRINT("NTFS FSC: MinorFunction %d\n", Stack->MinorFunction);
|
|
Status = STATUS_INVALID_DEVICE_REQUEST;
|
|
break;
|
|
}
|
|
|
|
Irp->IoStatus.Status = Status;
|
|
Irp->IoStatus.Information = 0;
|
|
|
|
IoCompleteRequest(Irp, IO_NO_INCREMENT);
|
|
|
|
return Status;
|
|
}
|
|
|
|
/* EOF */
|