mirror of
https://github.com/reactos/reactos.git
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298 lines
9 KiB
C
298 lines
9 KiB
C
/*
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* ReactOS kernel
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* Copyright (C) 2002, 2003 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 along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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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/cdfs/volume.c
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* PURPOSE: CDROM (ISO 9660) filesystem driver
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* PROGRAMMER: Art Yerkes
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* Eric Kohl
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*/
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/* INCLUDES *****************************************************************/
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#include "cdfs.h"
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#define NDEBUG
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#include <debug.h>
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/* FUNCTIONS ****************************************************************/
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static
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NTSTATUS
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CdfsGetFsVolumeInformation(
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PDEVICE_OBJECT DeviceObject,
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PFILE_FS_VOLUME_INFORMATION FsVolumeInfo,
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PULONG BufferLength)
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{
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DPRINT("CdfsGetFsVolumeInformation() called\n");
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DPRINT("FsVolumeInfo = %p\n", FsVolumeInfo);
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DPRINT("BufferLength %lu\n", *BufferLength);
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DPRINT("Vpb %p\n", DeviceObject->Vpb);
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DPRINT("Required length %lu\n", (sizeof(FILE_FS_VOLUME_INFORMATION) + DeviceObject->Vpb->VolumeLabelLength));
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DPRINT("LabelLength %hu\n", DeviceObject->Vpb->VolumeLabelLength);
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DPRINT("Label %.*S\n", DeviceObject->Vpb->VolumeLabelLength / sizeof(WCHAR), DeviceObject->Vpb->VolumeLabel);
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if (*BufferLength < sizeof(FILE_FS_VOLUME_INFORMATION))
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return STATUS_INFO_LENGTH_MISMATCH;
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if (*BufferLength < (sizeof(FILE_FS_VOLUME_INFORMATION) + DeviceObject->Vpb->VolumeLabelLength))
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return STATUS_BUFFER_OVERFLOW;
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/* valid entries */
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FsVolumeInfo->VolumeSerialNumber = DeviceObject->Vpb->SerialNumber;
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FsVolumeInfo->VolumeLabelLength = DeviceObject->Vpb->VolumeLabelLength;
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memcpy(FsVolumeInfo->VolumeLabel,
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DeviceObject->Vpb->VolumeLabel,
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DeviceObject->Vpb->VolumeLabelLength);
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/* dummy entries */
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FsVolumeInfo->VolumeCreationTime.QuadPart = 0;
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FsVolumeInfo->SupportsObjects = FALSE;
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DPRINT("Finished FsdGetFsVolumeInformation()\n");
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*BufferLength -= (sizeof(FILE_FS_VOLUME_INFORMATION) + DeviceObject->Vpb->VolumeLabelLength);
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DPRINT("BufferLength %lu\n", *BufferLength);
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return STATUS_SUCCESS;
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}
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static
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NTSTATUS
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CdfsGetFsAttributeInformation(
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PDEVICE_EXTENSION DeviceExt,
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PFILE_FS_ATTRIBUTE_INFORMATION FsAttributeInfo,
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PULONG BufferLength)
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{
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DPRINT("CdfsGetFsAttributeInformation()\n");
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DPRINT("FsAttributeInfo = %p\n", FsAttributeInfo);
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DPRINT("BufferLength %lu\n", *BufferLength);
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DPRINT("Required length %lu\n", (sizeof(FILE_FS_ATTRIBUTE_INFORMATION) + 8));
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UNREFERENCED_PARAMETER(DeviceExt);
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if (*BufferLength < sizeof (FILE_FS_ATTRIBUTE_INFORMATION))
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return STATUS_INFO_LENGTH_MISMATCH;
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if (*BufferLength < (sizeof(FILE_FS_ATTRIBUTE_INFORMATION) + 8))
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return STATUS_BUFFER_OVERFLOW;
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FsAttributeInfo->FileSystemAttributes =
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FILE_CASE_PRESERVED_NAMES | FILE_UNICODE_ON_DISK | FILE_READ_ONLY_VOLUME;
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FsAttributeInfo->MaximumComponentNameLength = 255;
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FsAttributeInfo->FileSystemNameLength = 8;
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memcpy(FsAttributeInfo->FileSystemName, L"CDFS", 8);
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DPRINT("Finished FsdGetFsAttributeInformation()\n");
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*BufferLength -= (sizeof(FILE_FS_ATTRIBUTE_INFORMATION) + 8);
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DPRINT("BufferLength %lu\n", *BufferLength);
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return STATUS_SUCCESS;
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}
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static NTSTATUS
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CdfsGetFsSizeInformation(
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PDEVICE_OBJECT DeviceObject,
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PFILE_FS_SIZE_INFORMATION FsSizeInfo,
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PULONG BufferLength)
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{
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PDEVICE_EXTENSION DeviceExt;
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NTSTATUS Status = STATUS_SUCCESS;
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DPRINT("CdfsGetFsSizeInformation()\n");
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DPRINT("FsSizeInfo = %p\n", FsSizeInfo);
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if (*BufferLength < sizeof(FILE_FS_SIZE_INFORMATION))
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return STATUS_BUFFER_OVERFLOW;
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DeviceExt = DeviceObject->DeviceExtension;
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FsSizeInfo->AvailableAllocationUnits.QuadPart = 0;
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FsSizeInfo->TotalAllocationUnits.QuadPart = DeviceExt->CdInfo.VolumeSpaceSize;
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FsSizeInfo->SectorsPerAllocationUnit = 1;
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FsSizeInfo->BytesPerSector = BLOCKSIZE;
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DPRINT("Finished FsdGetFsSizeInformation()\n");
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if (NT_SUCCESS(Status))
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*BufferLength -= sizeof(FILE_FS_SIZE_INFORMATION);
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return Status;
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}
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static
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NTSTATUS
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CdfsGetFsDeviceInformation(
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PDEVICE_OBJECT DeviceObject,
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PFILE_FS_DEVICE_INFORMATION FsDeviceInfo,
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PULONG BufferLength)
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{
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DPRINT("CdfsGetFsDeviceInformation()\n");
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DPRINT("FsDeviceInfo = %p\n", FsDeviceInfo);
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DPRINT("BufferLength %lu\n", *BufferLength);
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DPRINT("Required length %lu\n", sizeof(FILE_FS_DEVICE_INFORMATION));
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if (*BufferLength < sizeof(FILE_FS_DEVICE_INFORMATION))
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return STATUS_BUFFER_OVERFLOW;
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if (DeviceObject->DeviceType == FILE_DEVICE_CD_ROM_FILE_SYSTEM)
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FsDeviceInfo->DeviceType = FILE_DEVICE_CD_ROM;
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else
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FsDeviceInfo->DeviceType = FILE_DEVICE_DISK;
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FsDeviceInfo->Characteristics = DeviceObject->Characteristics;
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DPRINT("FsdGetFsDeviceInformation() finished.\n");
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*BufferLength -= sizeof(FILE_FS_DEVICE_INFORMATION);
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DPRINT("BufferLength %lu\n", *BufferLength);
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return STATUS_SUCCESS;
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}
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static
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NTSTATUS
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CdfsGetFsFullSizeInformation(
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PDEVICE_OBJECT DeviceObject,
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PFILE_FS_FULL_SIZE_INFORMATION FsSizeInfo,
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PULONG BufferLength)
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{
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PDEVICE_EXTENSION DeviceExt;
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NTSTATUS Status = STATUS_SUCCESS;
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DPRINT("CdfsGetFsFullSizeInformation()\n");
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DPRINT("FsSizeInfo = %p\n", FsSizeInfo);
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if (*BufferLength < sizeof(FILE_FS_FULL_SIZE_INFORMATION))
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return STATUS_BUFFER_OVERFLOW;
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DeviceExt = DeviceObject->DeviceExtension;
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FsSizeInfo->TotalAllocationUnits.QuadPart = DeviceExt->CdInfo.VolumeSpaceSize;
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FsSizeInfo->CallerAvailableAllocationUnits.QuadPart = 0;
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FsSizeInfo->ActualAvailableAllocationUnits.QuadPart = 0;
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FsSizeInfo->SectorsPerAllocationUnit = 1;
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FsSizeInfo->BytesPerSector = BLOCKSIZE;
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DPRINT("Finished CdfsGetFsFullSizeInformation()\n");
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if (NT_SUCCESS(Status))
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*BufferLength -= sizeof(FILE_FS_FULL_SIZE_INFORMATION);
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return Status;
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}
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NTSTATUS
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NTAPI
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CdfsQueryVolumeInformation(
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PCDFS_IRP_CONTEXT IrpContext)
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{
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PIRP Irp;
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PDEVICE_OBJECT DeviceObject;
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FS_INFORMATION_CLASS FsInformationClass;
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PIO_STACK_LOCATION Stack;
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NTSTATUS Status = STATUS_SUCCESS;
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PVOID SystemBuffer;
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ULONG BufferLength;
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DPRINT("CdfsQueryVolumeInformation() called\n");
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ASSERT(IrpContext);
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Irp = IrpContext->Irp;
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DeviceObject = IrpContext->DeviceObject;
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Stack = IrpContext->Stack;
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FsInformationClass = Stack->Parameters.QueryVolume.FsInformationClass;
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BufferLength = Stack->Parameters.QueryVolume.Length;
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SystemBuffer = Irp->AssociatedIrp.SystemBuffer;
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DPRINT("FsInformationClass %d\n", FsInformationClass);
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DPRINT("SystemBuffer %p\n", SystemBuffer);
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switch (FsInformationClass)
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{
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case FileFsVolumeInformation:
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Status = CdfsGetFsVolumeInformation(DeviceObject,
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SystemBuffer,
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&BufferLength);
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break;
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case FileFsAttributeInformation:
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Status = CdfsGetFsAttributeInformation(DeviceObject->DeviceExtension,
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SystemBuffer,
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&BufferLength);
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break;
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case FileFsSizeInformation:
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Status = CdfsGetFsSizeInformation(DeviceObject,
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SystemBuffer,
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&BufferLength);
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break;
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case FileFsDeviceInformation:
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Status = CdfsGetFsDeviceInformation(DeviceObject,
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SystemBuffer,
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&BufferLength);
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break;
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case FileFsFullSizeInformation:
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Status = CdfsGetFsFullSizeInformation(DeviceObject,
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SystemBuffer,
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&BufferLength);
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break;
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default:
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Status = STATUS_NOT_SUPPORTED;
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}
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if (NT_SUCCESS(Status))
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Irp->IoStatus.Information =
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Stack->Parameters.QueryVolume.Length - BufferLength;
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else
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Irp->IoStatus.Information = 0;
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return Status;
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}
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NTSTATUS
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NTAPI
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CdfsSetVolumeInformation(
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PCDFS_IRP_CONTEXT IrpContext)
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{
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DPRINT("CdfsSetVolumeInformation() called\n");
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ASSERT(IrpContext);
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IrpContext->Irp->IoStatus.Information = 0;
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return STATUS_NOT_SUPPORTED;
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}
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/* EOF */
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