drivers/filesystems/ntfs/volinfo.c

   1 /*
   2  *  ReactOS kernel
   3  *  Copyright (C) 2002 ReactOS Team
   4  *
   5  *  This program is free software; you can redistribute it and/or modify
   6  *  it under the terms of the GNU General Public License as published by
   7  *  the Free Software Foundation; either version 2 of the License, or
   8  *  (at your option) any later version.
   9  *
  10  *  This program is distributed in the hope that it will be useful,
  11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  *  GNU General Public License for more details.
  14  *
  15  *  You should have received a copy of the GNU General Public License
  16  *  along with this program; if not, write to the Free Software
  17  *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
  18  *
  19  * COPYRIGHT:        See COPYING in the top level directory
  20  * PROJECT:          ReactOS kernel
  21  * FILE:             drivers/filesystem/ntfs/volume.c
  22  * PURPOSE:          NTFS filesystem driver
  23  * PROGRAMMER:       Eric Kohl
  24  */
  25
  26 /* INCLUDES *****************************************************************/
  27
  28 #include "ntfs.h"
  29
  30 #define NDEBUG
  31 #include <debug.h>
  32
  33 /* FUNCTIONS ****************************************************************/
  34
  35 static
  36 NTSTATUS
  37 NtfsGetFsVolumeInformation(PDEVICE_OBJECT DeviceObject,
  38                            PFILE_FS_VOLUME_INFORMATION FsVolumeInfo,
  39                            PULONG BufferLength)
  40 {
  41     DPRINT("NtfsGetFsVolumeInformation() called\n");
  42     DPRINT("FsVolumeInfo = %p\n", FsVolumeInfo);
  43     DPRINT("BufferLength %lu\n", *BufferLength);
  44
  45     DPRINT("Vpb %p\n", DeviceObject->Vpb);
  46
  47     DPRINT("Required length %lu\n",
  48            sizeof(FILE_FS_VOLUME_INFORMATION) + DeviceObject->Vpb->VolumeLabelLength);
  49     DPRINT("LabelLength %hu\n",
  50            DeviceObject->Vpb->VolumeLabelLength);
  51     DPRINT("Label %*.S\n",
  52            DeviceObject->Vpb->VolumeLabelLength / sizeof(WCHAR),
  53            DeviceObject->Vpb->VolumeLabel);
  54
  55     if (*BufferLength < sizeof(FILE_FS_VOLUME_INFORMATION))
  56         return STATUS_INFO_LENGTH_MISMATCH;
  57
  58     if (*BufferLength < (sizeof(FILE_FS_VOLUME_INFORMATION) + DeviceObject->Vpb->VolumeLabelLength))
  59         return STATUS_BUFFER_OVERFLOW;
  60
  61     /* valid entries */
  62     FsVolumeInfo->VolumeSerialNumber = DeviceObject->Vpb->SerialNumber;
  63     FsVolumeInfo->VolumeLabelLength = DeviceObject->Vpb->VolumeLabelLength;
  64     memcpy(FsVolumeInfo->VolumeLabel,
  65            DeviceObject->Vpb->VolumeLabel,
  66            DeviceObject->Vpb->VolumeLabelLength);
  67
  68     /* dummy entries */
  69     FsVolumeInfo->VolumeCreationTime.QuadPart = 0;
  70     FsVolumeInfo->SupportsObjects = FALSE;
  71
  72     *BufferLength -= (sizeof(FILE_FS_VOLUME_INFORMATION) + DeviceObject->Vpb->VolumeLabelLength);
  73
  74     DPRINT("BufferLength %lu\n", *BufferLength);
  75     DPRINT("NtfsGetFsVolumeInformation() done\n");
  76
  77     return STATUS_SUCCESS;
  78 }
  79
  80
  81 static
  82 NTSTATUS
  83 NtfsGetFsAttributeInformation(PDEVICE_EXTENSION DeviceExt,
  84                               PFILE_FS_ATTRIBUTE_INFORMATION FsAttributeInfo,
  85                               PULONG BufferLength)
  86 {
  87     UNREFERENCED_PARAMETER(DeviceExt);
  88
  89     DPRINT("NtfsGetFsAttributeInformation()\n");
  90     DPRINT("FsAttributeInfo = %p\n", FsAttributeInfo);
  91     DPRINT("BufferLength %lu\n", *BufferLength);
  92     DPRINT("Required length %lu\n", (sizeof(FILE_FS_ATTRIBUTE_INFORMATION) + 8));
  93
  94     if (*BufferLength < sizeof (FILE_FS_ATTRIBUTE_INFORMATION))
  95         return STATUS_INFO_LENGTH_MISMATCH;
  96
  97     if (*BufferLength < (sizeof(FILE_FS_ATTRIBUTE_INFORMATION) + 8))
  98         return STATUS_BUFFER_OVERFLOW;
  99
 100     FsAttributeInfo->FileSystemAttributes =
 101         FILE_CASE_PRESERVED_NAMES | FILE_UNICODE_ON_DISK;
 102     FsAttributeInfo->MaximumComponentNameLength = 255;
 103     FsAttributeInfo->FileSystemNameLength = 8;
 104
 105     memcpy(FsAttributeInfo->FileSystemName, L"NTFS", 8);
 106
 107     DPRINT("Finished NtfsGetFsAttributeInformation()\n");
 108
 109     *BufferLength -= (sizeof(FILE_FS_ATTRIBUTE_INFORMATION) + 8);
 110     DPRINT("BufferLength %lu\n", *BufferLength);
 111
 112     return STATUS_SUCCESS;
 113 }
 114
 115
 116 static
 117 NTSTATUS
 118 NtfsGetFsSizeInformation(PDEVICE_OBJECT DeviceObject,
 119                          PFILE_FS_SIZE_INFORMATION FsSizeInfo,
 120                          PULONG BufferLength)
 121 {
 122     PDEVICE_EXTENSION DeviceExt;
 123     NTSTATUS Status = STATUS_SUCCESS;
 124
 125     DPRINT("NtfsGetFsSizeInformation()\n");
 126     DPRINT("FsSizeInfo = %p\n", FsSizeInfo);
 127
 128     if (*BufferLength < sizeof(FILE_FS_SIZE_INFORMATION))
 129         return STATUS_BUFFER_OVERFLOW;
 130
 131     DeviceExt = DeviceObject->DeviceExtension;
 132
 133     FsSizeInfo->AvailableAllocationUnits.QuadPart = 0;
 134     FsSizeInfo->TotalAllocationUnits.QuadPart = DeviceExt->NtfsInfo.SectorCount; /* ?? */
 135     FsSizeInfo->SectorsPerAllocationUnit = DeviceExt->NtfsInfo.SectorsPerCluster;
 136     FsSizeInfo->BytesPerSector = DeviceExt->NtfsInfo.BytesPerSector;
 137
 138     DPRINT("Finished NtfsGetFsSizeInformation()\n");
 139     if (NT_SUCCESS(Status))
 140         *BufferLength -= sizeof(FILE_FS_SIZE_INFORMATION);
 141
 142     return Status;
 143 }
 144
 145
 146 static
 147 NTSTATUS
 148 NtfsGetFsDeviceInformation(PFILE_FS_DEVICE_INFORMATION FsDeviceInfo,
 149                            PULONG BufferLength)
 150 {
 151     DPRINT("NtfsGetFsDeviceInformation()\n");
 152     DPRINT("FsDeviceInfo = %p\n", FsDeviceInfo);
 153     DPRINT("BufferLength %lu\n", *BufferLength);
 154     DPRINT("Required length %lu\n", sizeof(FILE_FS_DEVICE_INFORMATION));
 155
 156     if (*BufferLength < sizeof(FILE_FS_DEVICE_INFORMATION))
 157         return STATUS_BUFFER_OVERFLOW;
 158
 159     FsDeviceInfo->DeviceType = FILE_DEVICE_DISK;
 160     FsDeviceInfo->Characteristics = 0; /* FIXME: fix this !! */
 161
 162     DPRINT("NtfsGetFsDeviceInformation() finished.\n");
 163
 164     *BufferLength -= sizeof(FILE_FS_DEVICE_INFORMATION);
 165     DPRINT("BufferLength %lu\n", *BufferLength);
 166
 167     return STATUS_SUCCESS;
 168 }
 169
 170
 171 NTSTATUS
 172 NtfsQueryVolumeInformation(PNTFS_IRP_CONTEXT IrpContext)
 173 {
 174     PIRP Irp;
 175     PDEVICE_OBJECT DeviceObject;
 176     FS_INFORMATION_CLASS FsInformationClass;
 177     PIO_STACK_LOCATION Stack;
 178     NTSTATUS Status = STATUS_SUCCESS;
 179     PVOID SystemBuffer;
 180     ULONG BufferLength;
 181
 182     DPRINT("NtfsQueryVolumeInformation() called\n");
 183
 184     ASSERT(IrpContext);
 185
 186     Irp = IrpContext->Irp;
 187     DeviceObject = IrpContext->DeviceObject;
 188     Stack = IoGetCurrentIrpStackLocation(Irp);
 189     FsInformationClass = Stack->Parameters.QueryVolume.FsInformationClass;
 190     BufferLength = Stack->Parameters.QueryVolume.Length;
 191     SystemBuffer = Irp->AssociatedIrp.SystemBuffer;
 192     RtlZeroMemory(SystemBuffer, BufferLength);
 193
 194     DPRINT("FsInformationClass %d\n", FsInformationClass);
 195     DPRINT("SystemBuffer %p\n", SystemBuffer);
 196
 197     switch (FsInformationClass)
 198     {
 199         case FileFsVolumeInformation:
 200             Status = NtfsGetFsVolumeInformation(DeviceObject,
 201                                                 SystemBuffer,
 202                                                 &BufferLength);
 203             break;
 204
 205         case FileFsAttributeInformation:
 206             Status = NtfsGetFsAttributeInformation(DeviceObject->DeviceExtension,
 207                                                    SystemBuffer,
 208                                                    &BufferLength);
 209             break;
 210
 211         case FileFsSizeInformation:
 212             Status = NtfsGetFsSizeInformation(DeviceObject,
 213                                               SystemBuffer,
 214                                               &BufferLength);
 215             break;
 216
 217         case FileFsDeviceInformation:
 218             Status = NtfsGetFsDeviceInformation(SystemBuffer,
 219                                                 &BufferLength);
 220             break;
 221
 222         default:
 223             Status = STATUS_NOT_SUPPORTED;
 224     }
 225
 226     if (NT_SUCCESS(Status))
 227         Irp->IoStatus.Information =
 228             Stack->Parameters.QueryVolume.Length - BufferLength;
 229     else
 230         Irp->IoStatus.Information = 0;
 231
 232     return Status;
 233 }
 234
 235
 236 NTSTATUS
 237 NtfsSetVolumeInformation(PNTFS_IRP_CONTEXT IrpContext)
 238 {
 239     PIRP Irp;
 240
 241     DPRINT("NtfsSetVolumeInformation() called\n");
 242
 243     ASSERT(IrpContext);
 244
 245     Irp = IrpContext->Irp;
 246     Irp->IoStatus.Status = STATUS_NOT_SUPPORTED;
 247     Irp->IoStatus.Information = 0;
 248
 249     return STATUS_NOT_SUPPORTED;
 250 }
 251
 252 /* EOF */