/// <summary>
/// Opens the handle.
/// </summary>
/// <param name="path">The path.</param>
/// <param name="info">The info.</param>
public override Errno OpenHandle(string path, OpenedPathInfo info)
{
Errno retVal;
if (info.OpenAccess == OpenFlags.O_RDONLY)
{
String readPath = _pathFactory.CreateVirtualPath4Read(new VirtualRawPath(path));
retVal = base.OpenHandle(readPath, info);
}
else
{
// This is a write.
// @TODO Write to an existing file is not supported by BitTorrent.
// It has to be enforced somewhere.
String writePath = _pathFactory.CreateVirtualPath4Write(new VirtualRawPath(path));
retVal = base.OpenHandle(writePath, info);
}
// Add to filesys context.
VirtualPath vp = VirtualPath.CreateFromRawString(path);
VirtualFile vf = _fileManager.ReadVirtualFile(vp);
FileAccess fa = IOUtil.OpenFlags2FileAccess(info.OpenAccess);
var openFileInfo = new OpenFileInfo(info.Handle, vp, vf, fa);
_filesysContext.AddOpenFile(info.Handle, openFileInfo);
return(retVal);
}
public override Errno ReleaseHandle(string path, OpenedPathInfo info)
{
_filesysContext.RemoveOpenFile(info.Handle);
VirtualPath vp = VirtualPath.CreateFromRawString(path);
UpdateFileSizeInVirtualFile(vp);
return(base.ReleaseHandle(path, info));
}
/// <summary>
/// Gets the handle status. This method gets the status of the virtual file
/// and replaces the size with that of the real data file.
/// </summary>
public override Errno GetHandleStatus(string path, OpenedPathInfo info,
out Stat buf)
{
Errno ret;
ret = base.GetHandleStatus(path, info, out buf);
if ((buf.st_mode & FilePermissions.S_IFREG) != 0)
{
// Make a change to file size if is a file (S_IFREG)
buf.st_size = _fileManager.GetFileLength(
VirtualPath.CreateFromRawString(path));
}
return(ret);
}
/// <summary>
/// Creates the handle.
/// </summary>
/// <param name="path">The path.</param>
/// <param name="info">The info.</param>
/// <param name="mode">The mode.</param>
/// <returns></returns>
/// <remarks>This method is for FilesysOp.Write.</remarks>
public override Errno CreateHandle(string path, OpenedPathInfo info, FilePermissions mode)
{
// Create the handle for the write.
String writePath =
_pathFactory.CreateVirtualPath4Write(new VirtualRawPath(path));
Errno retVal = base.CreateHandle(writePath, info, mode);
// Create the VF so the reads afterwards knows about the file.
VirtualPath vp = VirtualPath.CreateFromRawString(path);
VirtualFile vf = CreateAndWriteVirtualFile(vp);
var ofi = new OpenFileInfo(info.Handle, vp, vf, FileAccess.Write);
_filesysContext.AddOpenFile(info.Handle, ofi);
return(retVal);
}
