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     DPRINT("NtfsGetFsAttributeInformation()\n");
  88     DPRINT("FsAttributeInfo = %p\n", FsAttributeInfo);
  89     DPRINT("BufferLength %lu\n", *BufferLength);
  90     DPRINT("Required length %lu\n", (sizeof(FILE_FS_ATTRIBUTE_INFORMATION) + 8));
  91
  92     if (*BufferLength < sizeof (FILE_FS_ATTRIBUTE_INFORMATION))
  93         return STATUS_INFO_LENGTH_MISMATCH;
  94
  95     if (*BufferLength < (sizeof(FILE_FS_ATTRIBUTE_INFORMATION) + 8))
  96         return STATUS_BUFFER_OVERFLOW;
  97
  98     FsAttributeInfo->FileSystemAttributes =
  99         FILE_CASE_PRESERVED_NAMES | FILE_UNICODE_ON_DISK;
 100     FsAttributeInfo->MaximumComponentNameLength = 255;
 101     FsAttributeInfo->FileSystemNameLength = 8;
 102
 103     memcpy(FsAttributeInfo->FileSystemName, L"NTFS", 8);
 104
 105     DPRINT("Finished NtfsGetFsAttributeInformation()\n");
 106
 107     *BufferLength -= (sizeof(FILE_FS_ATTRIBUTE_INFORMATION) + 8);
 108     DPRINT("BufferLength %lu\n", *BufferLength);
 109
 110     return STATUS_SUCCESS;
 111 }
 112
 113
 114 static
 115 NTSTATUS
 116 NtfsGetFsSizeInformation(PDEVICE_OBJECT DeviceObject,
 117                          PFILE_FS_SIZE_INFORMATION FsSizeInfo,
 118                          PULONG BufferLength)
 119 {
 120     PDEVICE_EXTENSION DeviceExt;
 121     NTSTATUS Status = STATUS_SUCCESS;
 122
 123     DPRINT("NtfsGetFsSizeInformation()\n");
 124     DPRINT("FsSizeInfo = %p\n", FsSizeInfo);
 125
 126     if (*BufferLength < sizeof(FILE_FS_SIZE_INFORMATION))
 127         return STATUS_BUFFER_OVERFLOW;
 128
 129     DeviceExt = DeviceObject->DeviceExtension;
 130
 131     FsSizeInfo->AvailableAllocationUnits.QuadPart = 0;
 132     FsSizeInfo->TotalAllocationUnits.QuadPart = DeviceExt->NtfsInfo.SectorCount; /* ?? */
 133     FsSizeInfo->SectorsPerAllocationUnit = DeviceExt->NtfsInfo.SectorsPerCluster;
 134     FsSizeInfo->BytesPerSector = DeviceExt->NtfsInfo.BytesPerSector;
 135
 136     DPRINT("Finished NtfsGetFsSizeInformation()\n");
 137     if (NT_SUCCESS(Status))
 138         *BufferLength -= sizeof(FILE_FS_SIZE_INFORMATION);
 139
 140     return Status;
 141 }
 142
 143
 144 static
 145 NTSTATUS
 146 NtfsGetFsDeviceInformation(PFILE_FS_DEVICE_INFORMATION FsDeviceInfo,
 147                            PULONG BufferLength)
 148 {
 149     DPRINT("NtfsGetFsDeviceInformation()\n");
 150     DPRINT("FsDeviceInfo = %p\n", FsDeviceInfo);
 151     DPRINT("BufferLength %lu\n", *BufferLength);
 152     DPRINT("Required length %lu\n", sizeof(FILE_FS_DEVICE_INFORMATION));
 153
 154     if (*BufferLength < sizeof(FILE_FS_DEVICE_INFORMATION))
 155         return STATUS_BUFFER_OVERFLOW;
 156
 157     FsDeviceInfo->DeviceType = FILE_DEVICE_DISK;
 158     FsDeviceInfo->Characteristics = 0; /* FIXME: fix this !! */
 159
 160     DPRINT("NtfsGetFsDeviceInformation() finished.\n");
 161
 162     *BufferLength -= sizeof(FILE_FS_DEVICE_INFORMATION);
 163     DPRINT("BufferLength %lu\n", *BufferLength);
 164
 165     return STATUS_SUCCESS;
 166 }
 167
 168
 169 NTSTATUS
 170 NtfsQueryVolumeInformation(PNTFS_IRP_CONTEXT IrpContext)
 171 {
 172     PIRP Irp;
 173     PDEVICE_OBJECT DeviceObject;
 174     FS_INFORMATION_CLASS FsInformationClass;
 175     PIO_STACK_LOCATION Stack;
 176     NTSTATUS Status = STATUS_SUCCESS;
 177     PVOID SystemBuffer;
 178     ULONG BufferLength;
 179
 180     DPRINT("NtfsQueryVolumeInformation() called\n");
 181
 182     ASSERT(IrpContext);
 183
 184     Irp = IrpContext->Irp;
 185     DeviceObject = IrpContext->DeviceObject;
 186     Stack = IoGetCurrentIrpStackLocation(Irp);
 187     FsInformationClass = Stack->Parameters.QueryVolume.FsInformationClass;
 188     BufferLength = Stack->Parameters.QueryVolume.Length;
 189     SystemBuffer = Irp->AssociatedIrp.SystemBuffer;
 190     RtlZeroMemory(SystemBuffer, BufferLength);
 191
 192     DPRINT("FsInformationClass %d\n", FsInformationClass);
 193     DPRINT("SystemBuffer %p\n", SystemBuffer);
 194
 195     switch (FsInformationClass)
 196     {
 197         case FileFsVolumeInformation:
 198             Status = NtfsGetFsVolumeInformation(DeviceObject,
 199                                                 SystemBuffer,
 200                                                 &BufferLength);
 201             break;
 202
 203         case FileFsAttributeInformation:
 204             Status = NtfsGetFsAttributeInformation(DeviceObject->DeviceExtension,
 205                                                    SystemBuffer,
 206                                                    &BufferLength);
 207             break;
 208
 209         case FileFsSizeInformation:
 210             Status = NtfsGetFsSizeInformation(DeviceObject,
 211                                               SystemBuffer,
 212                                               &BufferLength);
 213             break;
 214
 215         case FileFsDeviceInformation:
 216             Status = NtfsGetFsDeviceInformation(SystemBuffer,
 217                                                 &BufferLength);
 218             break;
 219
 220         default:
 221             Status = STATUS_NOT_SUPPORTED;
 222     }
 223
 224     if (NT_SUCCESS(Status))
 225         Irp->IoStatus.Information =
 226             Stack->Parameters.QueryVolume.Length - BufferLength;
 227     else
 228         Irp->IoStatus.Information = 0;
 229
 230     return Status;
 231 }
 232
 233
 234 NTSTATUS
 235 NtfsSetVolumeInformation(PNTFS_IRP_CONTEXT IrpContext)
 236 {
 237     PIRP Irp;
 238
 239     DPRINT("NtfsSetVolumeInformation() called\n");
 240
 241     ASSERT(IrpContext);
 242
 243     Irp = IrpContext->Irp;
 244     Irp->IoStatus.Status = STATUS_NOT_SUPPORTED;
 245     Irp->IoStatus.Information = 0;
 246
 247     return STATUS_NOT_SUPPORTED;
 248 }
 249
 250 /* EOF */