public uint CanDelete(WinFspFileSystem FileSystem, FileOpenContext Context, string FileName)
{
FileName = FileName.TrimEnd('\\');
var dir = GetFileObject(FileName);
if (dir != null)
{
if (dir is RamDir)
{
var dirL = dir as RamDir;
if (dirL.Childeren.Count > 0)
{
return(NtStatus.STATUS_DIRECTORY_NOT_EMPTY);
}
else
{
return(NtStatus.STATUS_SUCCESS);
}
}
else
{
return(NtStatus.STATUS_SUCCESS);
}
}
else
{
return(NtStatus.STATUS_OBJECT_NAME_NOT_FOUND);
}
}
public uint ReadDirectory(WinFspFileSystem FileSystem, FileOpenContext Context, string Pattern, ReadDirectoryBuffer dirBuffer)
{
if (Context == null || Context.Node.UserContext == null || Context.Node.Info == null)
{
return(NtStatus.STATUS_INVALID_PARAMETER);
}
var dir = Context.Node.UserContext as RamDir;
if (dir == null)
{
return(NtStatus.STATUS_INVALID_PARAMETER);
}
bool gotMarker = false;
foreach (var item in dir.Childeren.Values)
{
if (!gotMarker)
{
gotMarker = string.IsNullOrEmpty(dirBuffer.Context.Marker) || item.FileName == dirBuffer.Context.Marker;
}
if (gotMarker)
{
if (!string.IsNullOrEmpty(Pattern) && !Regex.IsMatch(item.FileName, Pattern, RegexOptions.IgnoreCase))
{
continue;
}
if (!dirBuffer.AddItem(item.FileName, item.Info))
{
break;
}
}
}
dirBuffer.SetEof();
return(NtStatus.STATUS_SUCCESS);
}
public void Cleanup(WinFspFileSystem FileSystem, FileOpenContext Context, string FileName, uint Flag)
{
var fileObject = GetFileObject(FileName);
if (fileObject == null)
{
return;
}
if (((uint)CleanUpFlags.FspCleanupDelete & Flag) != 0)
{
if (fileObject is RamDir && (fileObject as RamDir).Childeren.Count > 0)
{
return;
}
string parentFile = Path.GetDirectoryName(FileName);
var parentDir = GetFileObject(parentFile);
if (parentDir != null && parentDir is RamDir)
{
RemoveFileObject(FileName, parentDir);
Trace.WriteLine($"Delete FileName {FileName} {GetFileObject(FileName)}");
//Trace.WriteLine($"List Parent Dir- "+string.Join(",",(dir as RamDir).Childeren.Keys.ToArray()));
}
}
if ((Flag & (uint)CleanUpFlags.FspCleanupSetAllocationSize) != 0)
{
if (fileObject is RamFile)
{
}
}
}
public uint Rename(WinFspFileSystem FileSystem, FileOpenContext Context, string FileName, string NewFileName, bool ReplaceIfExists)
{
if (Context == null || Context.Node.UserContext == null || Context.Node.Info == null)
{
return(NtStatus.STATUS_INVALID_PARAMETER);
}
return(MoveObject(FileName, NewFileName, ReplaceIfExists));
}
public uint GetFileInfo(WinFspFileSystem FileSystem, FileOpenContext Context, WinFspNet.FileInfo fileInfo)
{
var file = Context.Node.UserContext;
if (file is RamFile)
{
RamFile ramFile = (file as RamFile);
fileInfo.AllocationSize = (ulong)ramFile.FileData.Capacity;
fileInfo.FileSize = (ulong)ramFile.FileData.Length;
}
return(NtStatus.STATUS_SUCCESS);
}
public uint Write(WinFspFileSystem FileSystem, FileOpenContext Context, WriteFileBuffer buffer)
{
// Console.WriteLine("WRITE: BufferLength {0} Offset {1} IsConstrained {2}", buffer.Length, buffer.Offset, buffer.ConstrainedIo);
if (Context.Node.UserContext == null)
{
return(NtStatus.STATUS_INVALID_PARAMETER);
}
var file = Context.Node.UserContext as RamFile;
if (file == null)
{
return(NtStatus.STATUS_INVALID_PARAMETER);
}
ulong EndOffset = 0;
if (buffer.ConstrainedIo)
{
if (buffer.Offset >= file.Info.FileSize)
{
return(NtStatus.STATUS_SUCCESS);
}
EndOffset = buffer.Length + buffer.Offset;
if (EndOffset > file.Info.FileSize)
{
EndOffset = file.Info.FileSize;
}
}
else
{
if (buffer.WriteToEndOfFile)
{
buffer.Offset = file.Info.FileSize;
}
EndOffset = buffer.Offset + buffer.Length;
if (EndOffset > file.Info.FileSize)
{
SetFileSize(FileSystem, Context, EndOffset, false);
}
}
var data = buffer.GetData();
int effectiveLength = (int)EndOffset - (int)buffer.Offset;
file.FileData.Seek((long)buffer.Offset, SeekOrigin.Begin);
file.FileData.Write(data, 0, effectiveLength);
FsVolumeInfo.FreeSize -= (ulong)effectiveLength;
buffer.SetTransferedBytes((uint)effectiveLength);
return(NtStatus.STATUS_SUCCESS);
}
public uint Overwrite(WinFspFileSystem FileSystem, FileOpenContext Context, uint FileAttributes, bool ReplaceFileAttributes)
{
if (Context.Node.UserContext == null)
{
return(NtStatus.STATUS_INVALID_PARAMETER);
}
var file = Context.Node.UserContext as FileObject;
Trace.WriteLine($"Overwrite FileName {file.FileName} fileFound {file != null}");
file.Info.FileSize = 0;
file.Info.LastAccessTime = file.Info.LastWriteTime = WinFsp.GetFileTime();
return(NtStatus.STATUS_SUCCESS);
}
public uint SetFileSize(WinFspFileSystem FileSystem, FileOpenContext Context, ulong NewSize, bool SetAllocationSize)
{
if (Context.Node.UserContext == null)
{
return(NtStatus.STATUS_INVALID_PARAMETER);
}
var file = Context.Node.UserContext as RamFile;
if (file == null)
{
return(NtStatus.STATUS_INVALID_PARAMETER);
}
// Console.WriteLine("Size: Length {0}", NewSize);
if (SetAllocationSize)
{
if (file.Info.AllocationSize != NewSize)
{
file.Info.AllocationSize = NewSize;
}
file.Info.FileSize = NewSize;
file.FileData.SetLength((long)NewSize);
}
else
{
if (file.Info.FileSize != NewSize)
{
if (file.Info.AllocationSize < NewSize)
{
uint AllocationUnit = (uint)Config.SectorSize * (uint)Config.SectorPerAllocationUnit;
uint AllocationSize = (uint)(NewSize + AllocationUnit - 1) / AllocationUnit * AllocationUnit;
SetFileSize(FileSystem, Context, AllocationSize, true);
}
file.Info.FileSize = NewSize;
}
}
return(NtStatus.STATUS_SUCCESS);
}
public uint SetBasicInfo(WinFspFileSystem FileSystem, FileOpenContext Context, uint FileAttributes, ulong CreationTime, ulong LastAccessTime, ulong LastWriteTime)
{
if (Context.Node.UserContext == null)
{
return(NtStatus.STATUS_INVALID_PARAMETER);
}
if (FileAttributes != FileAttirutes.INVALID_ATTRIBUTE)
{
Context.Node.Info.FileAttributes = FileAttributes;
}
if (CreationTime != 0)
{
Context.Node.Info.CreationTime = CreationTime;
}
if (LastAccessTime != 0)
{
Context.Node.Info.LastAccessTime = LastAccessTime;
}
if (LastWriteTime != 0)
{
Context.Node.Info.LastWriteTime = LastWriteTime;
}
return(NtStatus.STATUS_SUCCESS);
}
public uint Read(WinFspFileSystem FileSystem, FileOpenContext Context, ReadFileBuffer buffer)
{
// Console.WriteLine("READ: BufferLength {0} Offset {1} ", buffer.Length, buffer.Offset);
if (Context.Node.UserContext == null)
{
return(NtStatus.STATUS_INVALID_PARAMETER);
}
var file = Context.Node.UserContext as RamFile;
if (file == null)
{
return(NtStatus.STATUS_INVALID_PARAMETER);
}
if ((ulong)buffer.Offset >= file.Info.FileSize)
{
return(NtStatus.STATUS_END_OF_FILE);
}
ulong EndOfOffset = buffer.Offset + buffer.Length;
if (EndOfOffset > file.Info.FileSize)
{
EndOfOffset = file.Info.FileSize;
}
int length = (int)(EndOfOffset - buffer.Offset);
byte[] data = new byte[length];
file.FileData.Seek((long)buffer.Offset, SeekOrigin.Begin);
file.FileData.Read(data, 0, length);
buffer.FillBuffer(ref data, 0, (uint)length);
return(NtStatus.STATUS_SUCCESS);
}
public uint GetSecurity(WinFspFileSystem FileSystem, FileOpenContext Context, ref SecuirtyDescriptor descriptor)
{
return(NtStatus.STATUS_SUCCESS);
}
public uint SetSecurity(WinFspFileSystem FileSystem, FileOpenContext Context, uint SecurityInformation, SecuirtyDescriptor ModificationDescriptor)
{
return(NtStatus.STATUS_SUCCESS);
}
public uint Flush(WinFspFileSystem FileSystem, FileOpenContext Context)
{
return(NtStatus.STATUS_SUCCESS);
}
public uint Open(WinFspFileSystem FileSystem, string FileName, uint CreateOptions, uint GrantedAccess, FileOpenContext Context)
{
FileName = FileName.TrimEnd('\\');
var file = GetFileObject(FileName);
Trace.WriteLine($"Open FileName {FileName} fileFound {file!=null}");
if (file == null)
{
return(NtStatus.STATUS_OBJECT_NAME_NOT_FOUND);
}
Context.Node.Info = file.Info;
Context.Node.UserContext = file;
return(0);
}
public uint Create(WinFspFileSystem FileSystem, string FileName, uint CreateOptions, uint GrantedAccess, uint FileAttributes, SecuirtyDescriptor SecurityDescriptor, ulong AllocationSize, FileOpenContext Context)
{
var parentName = Path.GetDirectoryName(FileName);
var parent = GetFileObject(parentName);
if (parent == null)
{
return(NtStatus.STATUS_OBJECT_PATH_NOT_FOUND);
}
var isFolder = (CreateOption.FILE_DIRECTORY_FILE & CreateOptions) > 0;
FileObject file;
uint status = CreateFileObject(FileName, isFolder, parent, out file);
Trace.WriteLine($"Create FileName {FileName} {GetFileObject(FileName)} status {String.Format("{0:X}", status)}");
if (NtStatus.STATUS_SUCCESS != status)
{
return(status);
}
if (file == null)
{
return((uint)NtStatus.STATUS_OBJECT_NAME_NOT_FOUND);
}
if (!isFolder)
{
var ramFile = file as RamFile;
Context.Node.Info.AllocationSize = AllocationSize;
ramFile.FileData.SetLength((long)AllocationSize);
Context.Node.Info.FileAttributes = FileAttirutes.FILE_ATTRIBUTE_NORMAL;
}
else
{
Context.Node.Info.FileAttributes = FileAttirutes.FILE_ATTRIBUTE_DIRECTORY;
}
file.Info = Context.Node.Info;
Context.Node.UserContext = file;
return(NtStatus.STATUS_SUCCESS);
}
public void Close(WinFspFileSystem FileSystem, FileOpenContext Context)
{
}
