C++ (Cpp) PDOKAN_OPERATIONS::GetDiskFreeSpace Examples

Example #1

File: volume.c Project: Liryna/dokany

NTSTATUS
DokanFsFullSizeInformation(PEVENT_INFORMATION EventInfo,
                           PEVENT_CONTEXT EventContext,
                           PDOKAN_FILE_INFO FileInfo,
                           PDOKAN_OPERATIONS DokanOperations) {
  ULONGLONG freeBytesAvailable = 0;
  ULONGLONG totalBytes = 0;
  ULONGLONG freeBytes = 0;
  NTSTATUS status = STATUS_NOT_IMPLEMENTED;

  ULONG allocationUnitSize = FileInfo->DokanOptions->AllocationUnitSize;
  ULONG sectorSize = FileInfo->DokanOptions->SectorSize;

  PFILE_FS_FULL_SIZE_INFORMATION sizeInfo =
      (PFILE_FS_FULL_SIZE_INFORMATION)EventInfo->Buffer;

  if (EventContext->Operation.Volume.BufferLength <
      sizeof(FILE_FS_FULL_SIZE_INFORMATION)) {
    return STATUS_BUFFER_OVERFLOW;
  }

  if (DokanOperations->GetDiskFreeSpace) {
    status = DokanOperations->GetDiskFreeSpace(
        &freeBytesAvailable, // FreeBytesAvailable
        &totalBytes,         // TotalNumberOfBytes
        &freeBytes,          // TotalNumberOfFreeBytes
        FileInfo);
  }

  if (status == STATUS_NOT_IMPLEMENTED) {
    status = DokanGetDiskFreeSpace(&freeBytesAvailable, // FreeBytesAvailable
                                   &totalBytes,         // TotalNumberOfBytes
                                   &freeBytes, // TotalNumberOfFreeBytes
                                   FileInfo);
  }

  if (status != STATUS_SUCCESS) {
    return status;
  }

  sizeInfo->TotalAllocationUnits.QuadPart =
      totalBytes / allocationUnitSize;
  sizeInfo->ActualAvailableAllocationUnits.QuadPart =
      freeBytes / allocationUnitSize;
  sizeInfo->CallerAvailableAllocationUnits.QuadPart =
      freeBytesAvailable / allocationUnitSize;
  sizeInfo->SectorsPerAllocationUnit =
	  allocationUnitSize / sectorSize;
  sizeInfo->BytesPerSector = sectorSize;

  EventInfo->BufferLength = sizeof(FILE_FS_FULL_SIZE_INFORMATION);

  return STATUS_SUCCESS;
}

Example #2

File: volume.c Project: joepperkins/dokany

ULONG
DokanFsFullSizeInformation(
	PEVENT_INFORMATION	EventInfo,
	PEVENT_CONTEXT		EventContext,
	PDOKAN_FILE_INFO	FileInfo,
	PDOKAN_OPERATIONS	DokanOperations)
{
	ULONGLONG	freeBytesAvailable = 0;
	ULONGLONG	totalBytes = 0;
	ULONGLONG	freeBytes = 0;
	
	int			status = -1;

	PFILE_FS_FULL_SIZE_INFORMATION sizeInfo = (PFILE_FS_FULL_SIZE_INFORMATION)EventInfo->Buffer;

	
	if (!DokanOperations->GetDiskFreeSpace) {
		DokanOperations->GetDiskFreeSpace = DokanGetDiskFreeSpace;
		//return STATUS_NOT_IMPLEMENTED;
	}

	if (EventContext->Operation.Volume.BufferLength < sizeof(FILE_FS_FULL_SIZE_INFORMATION)) {
		return STATUS_BUFFER_OVERFLOW;
	}

	status = DokanOperations->GetDiskFreeSpace(
		&freeBytesAvailable, // FreeBytesAvailable
		&totalBytes, // TotalNumberOfBytes
		&freeBytes, // TotalNumberOfFreeBytes
		FileInfo);

	if (status < 0) {
		return STATUS_INVALID_PARAMETER;
	}

	sizeInfo->TotalAllocationUnits.QuadPart		= totalBytes / DOKAN_ALLOCATION_UNIT_SIZE;
	sizeInfo->ActualAvailableAllocationUnits.QuadPart = freeBytes / DOKAN_ALLOCATION_UNIT_SIZE;
	sizeInfo->CallerAvailableAllocationUnits.QuadPart = freeBytesAvailable / DOKAN_ALLOCATION_UNIT_SIZE;
	sizeInfo->SectorsPerAllocationUnit			= DOKAN_ALLOCATION_UNIT_SIZE / DOKAN_SECTOR_SIZE;
	sizeInfo->BytesPerSector					= DOKAN_SECTOR_SIZE;

	EventInfo->BufferLength = sizeof(FILE_FS_FULL_SIZE_INFORMATION);

	return STATUS_SUCCESS;
}