int DokanOperations.WriteFile(
string filename,
byte[] buffer,
ref uint writtenBytes,
long offset,
DokanFileInfo info)
{
mLog.DebugFormat(
"WriteFile - offset: {0, 5} - bytes: {1, 5} - {2}",
offset, buffer.Length, filename);
Node node = WalkTree.Find(GetRoot(), filename);
if (node == null)
{
return(-DokanNet.ERROR_PATH_NOT_FOUND);
}
if (node.IsControlledAndReadOnly())
{
return(-DokanNet.ERROR_ACCESS_DENIED);
}
return(mLocalFiles.WriteFile(
node.GetNodeId(),
filename,
buffer,
ref writtenBytes,
offset,
FileContext.Get(info)));
}
int DokanOperations.Cleanup(string filename, DokanFileInfo info)
{
if (info == null)
{
mLog.DebugFormat("Cleanup - {0} - INFO IS NULL", filename);
return(0);
}
long size = 0;
if (!info.IsDirectory)
{
Stream st = mHandles.GetStream(FileContext.Get(info));
if (st != null)
{
size = st.Length;
}
}
Node node = WalkTree.Find(GetRoot(), filename);
if (node != null)
{
mLog.DebugFormat("Cleanup - [{0}] - new size {1}", filename, size);
node.UpdateSize(size);
}
else
{
mLog.DebugFormat("Cleanup - {0}", filename);
}
return(0);
}
int DokanOperations.FlushFileBuffers(string filename, DokanFileInfo info)
{
mLog.DebugFormat("FlushFileBuffers {0}", filename);
if (info.IsDirectory)
{
return(0);
}
FileStream fs = mHandles.GetStream(FileContext.Get(info));
if (fs != null)
{
fs.Flush();
}
return(0);
}
int DokanOperations.CloseFile(string filename, DokanFileInfo info)
{
mLog.DebugFormat("CloseFile - {0}", filename);
Node node = WalkTree.Find(GetRoot(), filename);
if (node == null)
{
return(-DokanNet.ERROR_FILE_NOT_FOUND);
}
if (mHistoryDirectories.Close(node))
{
return(0);
}
IVirtualFile virtualFile;
if ((virtualFile = mVirtualFiles.Get(node.GetNodeId())) != null)
{
int handle = FileContext.Get(info);
if (handle == -1)
{
return(0);
}
virtualFile.CloseFile(handle);
return(0);
}
if (info.IsDirectory)
{
return(0);
}
mHandles.Close(FileContext.Get(info));
return(0);
}
int DokanOperations.ReadFile(
string filename,
byte[] buffer,
ref uint readBytes,
long offset,
DokanFileInfo info)
{
// this thing sometimes trows exceptions because
// System.Diagnostics.Process.GetProcessById((int)info.ProcessId).MainModule.FileName,
// System.ComponentModel.Win32Exception (0x80004005): A 32 bit processes cannot access modules of a 64 bit process.
// so we need to find a different way to do it
mLog.DebugFormat(
"ReadFile - offset: {0, 5} - bytes: {1, 5} - {2}",
offset, buffer.Length, filename);
if (info.IsDirectory)
{
return(-1);
}
try
{
FileStream fs = mHandles.GetStream(FileContext.Get(info));
if (fs == null)
{
// some apps (Notepad) don't open the file first!!
if ((this as DokanOperations).CreateFile(
filename,
FileAccess.Read,
FileShare.Read,
FileMode.Open,
FileOptions.None,
info) != 0)
{
mLog.ErrorFormat("Can't find open file {0}", filename);
return(-DokanNet.ERROR_PATH_NOT_FOUND);
}
fs = mHandles.GetStream(FileContext.Get(info));
}
if (!fs.CanRead)
{
mLog.ErrorFormat("Can't read from open file [{0}]",
filename);
return(-DokanNet.ERROR_ACCESS_DENIED);
}
fs.Seek(offset, SeekOrigin.Begin);
readBytes = (uint)fs.Read(buffer, 0, buffer.Length);
return(0);
}
catch (Exception e)
{
mLog.ErrorFormat("Error reading from {0}. {1}",
filename, e.Message);
return(-1);
}
}
