reactos/drivers/filesystems/cdfs/volinfo.c

   1 /*
   2  *  ReactOS kernel
   3  *  Copyright (C) 2002, 2003 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 along
  16  *  with this program; if not, write to the Free Software Foundation, Inc.,
  17  *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18  */
  19 /*
  20  * COPYRIGHT:        See COPYING in the top level directory
  21  * PROJECT:          ReactOS kernel
  22  * FILE:             drivers/filesystems/cdfs/volume.c
  23  * PURPOSE:          CDROM (ISO 9660) filesystem driver
  24  * PROGRAMMER:       Art Yerkes
  25  *                   Eric Kohl
  26  */
  27
  28 /* INCLUDES *****************************************************************/
  29
  30 #include "cdfs.h"
  31
  32 #define NDEBUG
  33 #include <debug.h>
  34
  35 /* FUNCTIONS ****************************************************************/
  36
  37 static
  38 NTSTATUS
  39 CdfsGetFsVolumeInformation(
  40     PDEVICE_OBJECT DeviceObject,
  41     PFILE_FS_VOLUME_INFORMATION FsVolumeInfo,
  42     PULONG BufferLength)
  43 {
  44     DPRINT("CdfsGetFsVolumeInformation() called\n");
  45     DPRINT("FsVolumeInfo = %p\n", FsVolumeInfo);
  46     DPRINT("BufferLength %lu\n", *BufferLength);
  47
  48     DPRINT("Vpb %p\n", DeviceObject->Vpb);
  49
  50     DPRINT("Required length %lu\n", (sizeof(FILE_FS_VOLUME_INFORMATION) + DeviceObject->Vpb->VolumeLabelLength));
  51     DPRINT("LabelLength %hu\n", DeviceObject->Vpb->VolumeLabelLength);
  52     DPRINT("Label %.*S\n", DeviceObject->Vpb->VolumeLabelLength / sizeof(WCHAR), DeviceObject->Vpb->VolumeLabel);
  53
  54     if (*BufferLength < sizeof(FILE_FS_VOLUME_INFORMATION))
  55         return STATUS_INFO_LENGTH_MISMATCH;
  56
  57     if (*BufferLength < (sizeof(FILE_FS_VOLUME_INFORMATION) + DeviceObject->Vpb->VolumeLabelLength))
  58         return STATUS_BUFFER_OVERFLOW;
  59
  60     /* valid entries */
  61     FsVolumeInfo->VolumeSerialNumber = DeviceObject->Vpb->SerialNumber;
  62     FsVolumeInfo->VolumeLabelLength = DeviceObject->Vpb->VolumeLabelLength;
  63     memcpy(FsVolumeInfo->VolumeLabel,
  64            DeviceObject->Vpb->VolumeLabel,
  65            DeviceObject->Vpb->VolumeLabelLength);
  66
  67     /* dummy entries */
  68     FsVolumeInfo->VolumeCreationTime.QuadPart = 0;
  69     FsVolumeInfo->SupportsObjects = FALSE;
  70
  71     DPRINT("Finished FsdGetFsVolumeInformation()\n");
  72
  73     *BufferLength -= (sizeof(FILE_FS_VOLUME_INFORMATION) + DeviceObject->Vpb->VolumeLabelLength);
  74
  75     DPRINT("BufferLength %lu\n", *BufferLength);
  76
  77     return STATUS_SUCCESS;
  78 }
  79
  80
  81 static
  82 NTSTATUS
  83 CdfsGetFsAttributeInformation(
  84     PDEVICE_EXTENSION DeviceExt,
  85     PFILE_FS_ATTRIBUTE_INFORMATION FsAttributeInfo,
  86     PULONG BufferLength)
  87 {
  88     DPRINT("CdfsGetFsAttributeInformation()\n");
  89     DPRINT("FsAttributeInfo = %p\n", FsAttributeInfo);
  90     DPRINT("BufferLength %lu\n", *BufferLength);
  91     DPRINT("Required length %lu\n", (sizeof(FILE_FS_ATTRIBUTE_INFORMATION) + 8));
  92
  93     UNREFERENCED_PARAMETER(DeviceExt);
  94
  95     if (*BufferLength < sizeof (FILE_FS_ATTRIBUTE_INFORMATION))
  96         return STATUS_INFO_LENGTH_MISMATCH;
  97
  98     if (*BufferLength < (sizeof(FILE_FS_ATTRIBUTE_INFORMATION) + 8))
  99         return STATUS_BUFFER_OVERFLOW;
 100
 101     FsAttributeInfo->FileSystemAttributes =
 102         FILE_CASE_PRESERVED_NAMES | FILE_UNICODE_ON_DISK | FILE_READ_ONLY_VOLUME;
 103     FsAttributeInfo->MaximumComponentNameLength = 255;
 104     FsAttributeInfo->FileSystemNameLength = 8;
 105
 106     memcpy(FsAttributeInfo->FileSystemName, L"CDFS", 8);
 107
 108     DPRINT("Finished FsdGetFsAttributeInformation()\n");
 109
 110     *BufferLength -= (sizeof(FILE_FS_ATTRIBUTE_INFORMATION) + 8);
 111     DPRINT("BufferLength %lu\n", *BufferLength);
 112
 113     return STATUS_SUCCESS;
 114 }
 115
 116
 117 static NTSTATUS
 118 CdfsGetFsSizeInformation(
 119     PDEVICE_OBJECT DeviceObject,
 120     PFILE_FS_SIZE_INFORMATION FsSizeInfo,
 121     PULONG BufferLength)
 122 {
 123     PDEVICE_EXTENSION DeviceExt;
 124     NTSTATUS Status = STATUS_SUCCESS;
 125
 126     DPRINT("CdfsGetFsSizeInformation()\n");
 127     DPRINT("FsSizeInfo = %p\n", FsSizeInfo);
 128
 129     if (*BufferLength < sizeof(FILE_FS_SIZE_INFORMATION))
 130         return STATUS_BUFFER_OVERFLOW;
 131
 132     DeviceExt = DeviceObject->DeviceExtension;
 133
 134     FsSizeInfo->AvailableAllocationUnits.QuadPart = 0;
 135     FsSizeInfo->TotalAllocationUnits.QuadPart = DeviceExt->CdInfo.VolumeSpaceSize;
 136     FsSizeInfo->SectorsPerAllocationUnit = 1;
 137     FsSizeInfo->BytesPerSector = BLOCKSIZE;
 138
 139     DPRINT("Finished FsdGetFsSizeInformation()\n");
 140     if (NT_SUCCESS(Status))
 141         *BufferLength -= sizeof(FILE_FS_SIZE_INFORMATION);
 142
 143     return Status;
 144 }
 145
 146
 147 static
 148 NTSTATUS
 149 CdfsGetFsDeviceInformation(
 150     PDEVICE_OBJECT DeviceObject,
 151     PFILE_FS_DEVICE_INFORMATION FsDeviceInfo,
 152     PULONG BufferLength)
 153 {
 154     DPRINT("CdfsGetFsDeviceInformation()\n");
 155     DPRINT("FsDeviceInfo = %p\n", FsDeviceInfo);
 156     DPRINT("BufferLength %lu\n", *BufferLength);
 157     DPRINT("Required length %lu\n", sizeof(FILE_FS_DEVICE_INFORMATION));
 158
 159     if (*BufferLength < sizeof(FILE_FS_DEVICE_INFORMATION))
 160         return STATUS_BUFFER_OVERFLOW;
 161
 162     FsDeviceInfo->DeviceType = FILE_DEVICE_CD_ROM;
 163     FsDeviceInfo->Characteristics = DeviceObject->Characteristics;
 164
 165     DPRINT("FsdGetFsDeviceInformation() finished.\n");
 166
 167     *BufferLength -= sizeof(FILE_FS_DEVICE_INFORMATION);
 168     DPRINT("BufferLength %lu\n", *BufferLength);
 169
 170     return STATUS_SUCCESS;
 171 }
 172
 173
 174 static
 175 NTSTATUS
 176 CdfsGetFsFullSizeInformation(
 177     PDEVICE_OBJECT DeviceObject,
 178     PFILE_FS_FULL_SIZE_INFORMATION FsSizeInfo,
 179     PULONG BufferLength)
 180 {
 181     PDEVICE_EXTENSION DeviceExt;
 182     NTSTATUS Status = STATUS_SUCCESS;
 183
 184     DPRINT("CdfsGetFsFullSizeInformation()\n");
 185     DPRINT("FsSizeInfo = %p\n", FsSizeInfo);
 186
 187     if (*BufferLength < sizeof(FILE_FS_FULL_SIZE_INFORMATION))
 188         return STATUS_BUFFER_OVERFLOW;
 189
 190     DeviceExt = DeviceObject->DeviceExtension;
 191
 192     FsSizeInfo->TotalAllocationUnits.QuadPart = DeviceExt->CdInfo.VolumeSpaceSize;
 193     FsSizeInfo->CallerAvailableAllocationUnits.QuadPart = 0;
 194     FsSizeInfo->ActualAvailableAllocationUnits.QuadPart = 0;
 195     FsSizeInfo->SectorsPerAllocationUnit = 1;
 196     FsSizeInfo->BytesPerSector = BLOCKSIZE;
 197
 198     DPRINT("Finished CdfsGetFsFullSizeInformation()\n");
 199     if (NT_SUCCESS(Status))
 200         *BufferLength -= sizeof(FILE_FS_FULL_SIZE_INFORMATION);
 201
 202     return Status;
 203 }
 204
 205
 206 NTSTATUS
 207 NTAPI
 208 CdfsQueryVolumeInformation(
 209     PCDFS_IRP_CONTEXT IrpContext)
 210 {
 211     PIRP Irp;
 212     PDEVICE_OBJECT DeviceObject;
 213     FS_INFORMATION_CLASS FsInformationClass;
 214     PIO_STACK_LOCATION Stack;
 215     NTSTATUS Status = STATUS_SUCCESS;
 216     PVOID SystemBuffer;
 217     ULONG BufferLength;
 218
 219     DPRINT("CdfsQueryVolumeInformation() called\n");
 220
 221     ASSERT(IrpContext);
 222
 223     Irp = IrpContext->Irp;
 224     DeviceObject = IrpContext->DeviceObject;
 225     Stack = IrpContext->Stack;
 226     FsInformationClass = Stack->Parameters.QueryVolume.FsInformationClass;
 227     BufferLength = Stack->Parameters.QueryVolume.Length;
 228     SystemBuffer = Irp->AssociatedIrp.SystemBuffer;
 229
 230     DPRINT("FsInformationClass %d\n", FsInformationClass);
 231     DPRINT("SystemBuffer %p\n", SystemBuffer);
 232
 233     switch (FsInformationClass)
 234     {
 235         case FileFsVolumeInformation:
 236             Status = CdfsGetFsVolumeInformation(DeviceObject,
 237                                                 SystemBuffer,
 238                                                 &BufferLength);
 239             break;
 240
 241         case FileFsAttributeInformation:
 242             Status = CdfsGetFsAttributeInformation(DeviceObject->DeviceExtension,
 243                                                    SystemBuffer,
 244                                                    &BufferLength);
 245             break;
 246
 247         case FileFsSizeInformation:
 248             Status = CdfsGetFsSizeInformation(DeviceObject,
 249                                               SystemBuffer,
 250                                               &BufferLength);
 251             break;
 252
 253         case FileFsDeviceInformation:
 254             Status = CdfsGetFsDeviceInformation(DeviceObject,
 255                                                 SystemBuffer,
 256                                                 &BufferLength);
 257             break;
 258
 259         case FileFsFullSizeInformation:
 260             Status = CdfsGetFsFullSizeInformation(DeviceObject,
 261                                                   SystemBuffer,
 262                                                   &BufferLength);
 263             break;
 264
 265         default:
 266             Status = STATUS_NOT_SUPPORTED;
 267     }
 268
 269     if (NT_SUCCESS(Status))
 270         Irp->IoStatus.Information =
 271         Stack->Parameters.QueryVolume.Length - BufferLength;
 272     else
 273         Irp->IoStatus.Information = 0;
 274
 275     return Status;
 276 }
 277
 278
 279 NTSTATUS
 280 NTAPI
 281 CdfsSetVolumeInformation(
 282     PCDFS_IRP_CONTEXT IrpContext)
 283 {
 284     DPRINT("CdfsSetVolumeInformation() called\n");
 285
 286     ASSERT(IrpContext);
 287
 288     IrpContext->Irp->IoStatus.Information = 0;
 289
 290     return STATUS_NOT_SUPPORTED;
 291 }
 292
 293 /* EOF */