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 ULONGLONG
  37 NtfsGetFreeClusters(PDEVICE_EXTENSION DeviceExt)
  38 {
  39     UNIMPLEMENTED;
  40     return 0;
  41 }
  42
  43 static
  44 NTSTATUS
  45 NtfsGetFsVolumeInformation(PDEVICE_OBJECT DeviceObject,
  46                            PFILE_FS_VOLUME_INFORMATION FsVolumeInfo,
  47                            PULONG BufferLength)
  48 {
  49     DPRINT("NtfsGetFsVolumeInformation() called\n");
  50     DPRINT("FsVolumeInfo = %p\n", FsVolumeInfo);
  51     DPRINT("BufferLength %lu\n", *BufferLength);
  52
  53     DPRINT("Vpb %p\n", DeviceObject->Vpb);
  54
  55     DPRINT("Required length %lu\n",
  56            sizeof(FILE_FS_VOLUME_INFORMATION) + DeviceObject->Vpb->VolumeLabelLength);
  57     DPRINT("LabelLength %hu\n",
  58            DeviceObject->Vpb->VolumeLabelLength);
  59     DPRINT("Label %*.S\n",
  60            DeviceObject->Vpb->VolumeLabelLength / sizeof(WCHAR),
  61            DeviceObject->Vpb->VolumeLabel);
  62
  63     if (*BufferLength < sizeof(FILE_FS_VOLUME_INFORMATION))
  64         return STATUS_INFO_LENGTH_MISMATCH;
  65
  66     if (*BufferLength < (sizeof(FILE_FS_VOLUME_INFORMATION) + DeviceObject->Vpb->VolumeLabelLength))
  67         return STATUS_BUFFER_OVERFLOW;
  68
  69     /* valid entries */
  70     FsVolumeInfo->VolumeSerialNumber = DeviceObject->Vpb->SerialNumber;
  71     FsVolumeInfo->VolumeLabelLength = DeviceObject->Vpb->VolumeLabelLength;
  72     memcpy(FsVolumeInfo->VolumeLabel,
  73            DeviceObject->Vpb->VolumeLabel,
  74            DeviceObject->Vpb->VolumeLabelLength);
  75
  76     /* dummy entries */
  77     FsVolumeInfo->VolumeCreationTime.QuadPart = 0;
  78     FsVolumeInfo->SupportsObjects = FALSE;
  79
  80     *BufferLength -= (sizeof(FILE_FS_VOLUME_INFORMATION) + DeviceObject->Vpb->VolumeLabelLength);
  81
  82     DPRINT("BufferLength %lu\n", *BufferLength);
  83     DPRINT("NtfsGetFsVolumeInformation() done\n");
  84
  85     return STATUS_SUCCESS;
  86 }
  87
  88
  89 static
  90 NTSTATUS
  91 NtfsGetFsAttributeInformation(PDEVICE_EXTENSION DeviceExt,
  92                               PFILE_FS_ATTRIBUTE_INFORMATION FsAttributeInfo,
  93                               PULONG BufferLength)
  94 {
  95     UNREFERENCED_PARAMETER(DeviceExt);
  96
  97     DPRINT("NtfsGetFsAttributeInformation()\n");
  98     DPRINT("FsAttributeInfo = %p\n", FsAttributeInfo);
  99     DPRINT("BufferLength %lu\n", *BufferLength);
 100     DPRINT("Required length %lu\n", (sizeof(FILE_FS_ATTRIBUTE_INFORMATION) + 8));
 101
 102     if (*BufferLength < sizeof (FILE_FS_ATTRIBUTE_INFORMATION))
 103         return STATUS_INFO_LENGTH_MISMATCH;
 104
 105     if (*BufferLength < (sizeof(FILE_FS_ATTRIBUTE_INFORMATION) + 8))
 106         return STATUS_BUFFER_OVERFLOW;
 107
 108     FsAttributeInfo->FileSystemAttributes =
 109         FILE_CASE_PRESERVED_NAMES | FILE_UNICODE_ON_DISK;
 110     FsAttributeInfo->MaximumComponentNameLength = 255;
 111     FsAttributeInfo->FileSystemNameLength = 8;
 112
 113     memcpy(FsAttributeInfo->FileSystemName, L"NTFS", 8);
 114
 115     DPRINT("Finished NtfsGetFsAttributeInformation()\n");
 116
 117     *BufferLength -= (sizeof(FILE_FS_ATTRIBUTE_INFORMATION) + 8);
 118     DPRINT("BufferLength %lu\n", *BufferLength);
 119
 120     return STATUS_SUCCESS;
 121 }
 122
 123
 124 static
 125 NTSTATUS
 126 NtfsGetFsSizeInformation(PDEVICE_OBJECT DeviceObject,
 127                          PFILE_FS_SIZE_INFORMATION FsSizeInfo,
 128                          PULONG BufferLength)
 129 {
 130     PDEVICE_EXTENSION DeviceExt;
 131     NTSTATUS Status = STATUS_SUCCESS;
 132
 133     DPRINT("NtfsGetFsSizeInformation()\n");
 134     DPRINT("FsSizeInfo = %p\n", FsSizeInfo);
 135
 136     if (*BufferLength < sizeof(FILE_FS_SIZE_INFORMATION))
 137         return STATUS_BUFFER_OVERFLOW;
 138
 139     DeviceExt = DeviceObject->DeviceExtension;
 140
 141     FsSizeInfo->AvailableAllocationUnits.QuadPart = NtfsGetFreeClusters(DeviceExt);
 142     FsSizeInfo->TotalAllocationUnits.QuadPart = DeviceExt->NtfsInfo.SectorCount / DeviceExt->NtfsInfo.SectorsPerCluster;
 143     FsSizeInfo->SectorsPerAllocationUnit = DeviceExt->NtfsInfo.SectorsPerCluster;
 144     FsSizeInfo->BytesPerSector = DeviceExt->NtfsInfo.BytesPerSector;
 145
 146     DPRINT("Finished NtfsGetFsSizeInformation()\n");
 147     if (NT_SUCCESS(Status))
 148         *BufferLength -= sizeof(FILE_FS_SIZE_INFORMATION);
 149
 150     return Status;
 151 }
 152
 153
 154 static
 155 NTSTATUS
 156 NtfsGetFsDeviceInformation(PDEVICE_OBJECT DeviceObject,
 157                            PFILE_FS_DEVICE_INFORMATION FsDeviceInfo,
 158                            PULONG BufferLength)
 159 {
 160     DPRINT("NtfsGetFsDeviceInformation()\n");
 161     DPRINT("FsDeviceInfo = %p\n", FsDeviceInfo);
 162     DPRINT("BufferLength %lu\n", *BufferLength);
 163     DPRINT("Required length %lu\n", sizeof(FILE_FS_DEVICE_INFORMATION));
 164
 165     if (*BufferLength < sizeof(FILE_FS_DEVICE_INFORMATION))
 166         return STATUS_BUFFER_OVERFLOW;
 167
 168     FsDeviceInfo->DeviceType = FILE_DEVICE_DISK;
 169     FsDeviceInfo->Characteristics = DeviceObject->Characteristics;
 170
 171     DPRINT("NtfsGetFsDeviceInformation() finished.\n");
 172
 173     *BufferLength -= sizeof(FILE_FS_DEVICE_INFORMATION);
 174     DPRINT("BufferLength %lu\n", *BufferLength);
 175
 176     return STATUS_SUCCESS;
 177 }
 178
 179
 180 NTSTATUS
 181 NtfsQueryVolumeInformation(PNTFS_IRP_CONTEXT IrpContext)
 182 {
 183     PIRP Irp;
 184     PDEVICE_OBJECT DeviceObject;
 185     FS_INFORMATION_CLASS FsInformationClass;
 186     PIO_STACK_LOCATION Stack;
 187     NTSTATUS Status = STATUS_SUCCESS;
 188     PVOID SystemBuffer;
 189     ULONG BufferLength;
 190
 191     DPRINT("NtfsQueryVolumeInformation() called\n");
 192
 193     ASSERT(IrpContext);
 194
 195     Irp = IrpContext->Irp;
 196     DeviceObject = IrpContext->DeviceObject;
 197     Stack = IoGetCurrentIrpStackLocation(Irp);
 198     FsInformationClass = Stack->Parameters.QueryVolume.FsInformationClass;
 199     BufferLength = Stack->Parameters.QueryVolume.Length;
 200     SystemBuffer = Irp->AssociatedIrp.SystemBuffer;
 201     RtlZeroMemory(SystemBuffer, BufferLength);
 202
 203     DPRINT("FsInformationClass %d\n", FsInformationClass);
 204     DPRINT("SystemBuffer %p\n", SystemBuffer);
 205
 206     switch (FsInformationClass)
 207     {
 208         case FileFsVolumeInformation:
 209             Status = NtfsGetFsVolumeInformation(DeviceObject,
 210                                                 SystemBuffer,
 211                                                 &BufferLength);
 212             break;
 213
 214         case FileFsAttributeInformation:
 215             Status = NtfsGetFsAttributeInformation(DeviceObject->DeviceExtension,
 216                                                    SystemBuffer,
 217                                                    &BufferLength);
 218             break;
 219
 220         case FileFsSizeInformation:
 221             Status = NtfsGetFsSizeInformation(DeviceObject,
 222                                               SystemBuffer,
 223                                               &BufferLength);
 224             break;
 225
 226         case FileFsDeviceInformation:
 227             Status = NtfsGetFsDeviceInformation(DeviceObject,
 228                                                 SystemBuffer,
 229                                                 &BufferLength);
 230             break;
 231
 232         default:
 233             Status = STATUS_NOT_SUPPORTED;
 234     }
 235
 236     if (NT_SUCCESS(Status))
 237         Irp->IoStatus.Information =
 238             Stack->Parameters.QueryVolume.Length - BufferLength;
 239     else
 240         Irp->IoStatus.Information = 0;
 241
 242     return Status;
 243 }
 244
 245
 246 NTSTATUS
 247 NtfsSetVolumeInformation(PNTFS_IRP_CONTEXT IrpContext)
 248 {
 249     PIRP Irp;
 250
 251     DPRINT("NtfsSetVolumeInformation() called\n");
 252
 253     ASSERT(IrpContext);
 254
 255     Irp = IrpContext->Irp;
 256     Irp->IoStatus.Status = STATUS_NOT_SUPPORTED;
 257     Irp->IoStatus.Information = 0;
 258
 259     return STATUS_NOT_SUPPORTED;
 260 }
 261
 262 /* EOF */