public override void Cleanup(
Object FileNode0,
Object FileDesc,
String FileName,
UInt32 Flags)
{
FileNode FileNode = (FileNode)FileNode0;
FileNode MainFileNode = null != FileNode.MainFileNode ?
FileNode.MainFileNode : FileNode;
if (0 != (Flags & CleanupSetArchiveBit))
{
if (0 == (MainFileNode.FileInfo.FileAttributes & (UInt32)FileAttributes.Directory))
{
MainFileNode.FileInfo.FileAttributes |= (UInt32)FileAttributes.Archive;
}
}
if (0 != (Flags & (CleanupSetLastAccessTime | CleanupSetLastWriteTime | CleanupSetChangeTime)))
{
UInt64 SystemTime = (UInt64)DateTime.Now.ToFileTimeUtc();
if (0 != (Flags & CleanupSetLastAccessTime))
{
MainFileNode.FileInfo.LastAccessTime = SystemTime;
}
if (0 != (Flags & CleanupSetLastWriteTime))
{
MainFileNode.FileInfo.LastWriteTime = SystemTime;
}
if (0 != (Flags & CleanupSetChangeTime))
{
MainFileNode.FileInfo.ChangeTime = SystemTime;
}
}
if (0 != (Flags & CleanupSetAllocationSize))
{
UInt64 AllocationUnit = MEMFS_SECTOR_SIZE * MEMFS_SECTORS_PER_ALLOCATION_UNIT;
UInt64 AllocationSize = (FileNode.FileInfo.FileSize + AllocationUnit - 1) /
AllocationUnit * AllocationUnit;
SetFileSizeInternal(FileNode, AllocationSize, true);
}
if (0 != (Flags & CleanupDelete) && !FileNodeMap.HasChild(FileNode))
{
List <String> StreamFileNames = new List <String>(FileNodeMap.GetStreamFileNames(FileNode));
foreach (String StreamFileName in StreamFileNames)
{
FileNode StreamNode = FileNodeMap.Get(StreamFileName);
if (null == StreamNode)
{
continue; /* should not happen */
}
FileNodeMap.Remove(StreamNode);
}
FileNodeMap.Remove(FileNode);
}
}
public override Boolean GetStreamEntry(
Object FileNode0,
Object FileDesc,
ref Object Context,
out String StreamName,
out UInt64 StreamSize,
out UInt64 StreamAllocationSize)
{
FileNode FileNode = (FileNode)FileNode0;
IEnumerator <String> Enumerator = (IEnumerator <String>)Context;
if (null == Enumerator)
{
if (null != FileNode.MainFileNode)
{
FileNode = FileNode.MainFileNode;
}
List <String> StreamFileNames = new List <String>();
if (0 == (FileNode.FileInfo.FileAttributes & (UInt32)FileAttributes.Directory))
{
StreamFileNames.Add(FileNode.FileName);
}
StreamFileNames.AddRange(FileNodeMap.GetStreamFileNames(FileNode));
Context = Enumerator = StreamFileNames.GetEnumerator();
}
while (Enumerator.MoveNext())
{
String FullFileName = Enumerator.Current;
FileNode StreamFileNode = FileNodeMap.Get(FullFileName);
if (null != StreamFileNode)
{
int Index = FullFileName.IndexOf(':');
if (0 > Index)
{
StreamName = "";
}
else
{
StreamName = FullFileName.Substring(Index + 1);
}
StreamSize = StreamFileNode.FileInfo.FileSize;
StreamAllocationSize = StreamFileNode.FileInfo.AllocationSize;
return(true);
}
}
StreamName = default(String);
StreamSize = default(UInt64);
StreamAllocationSize = default(UInt64);
return(false);
}
public override Int32 Overwrite(
Object FileNode0,
Object FileDesc,
UInt32 FileAttributes,
Boolean ReplaceFileAttributes,
UInt64 AllocationSize,
out FileInfo FileInfo)
{
FileInfo = default(FileInfo);
FileNode FileNode = (FileNode)FileNode0;
Int32 Result;
List <String> StreamFileNames = new List <String>(FileNodeMap.GetStreamFileNames(FileNode));
foreach (String StreamFileName in StreamFileNames)
{
FileNode StreamNode = FileNodeMap.Get(StreamFileName);
if (null == StreamNode)
{
continue; /* should not happen */
}
if (0 == StreamNode.OpenCount)
{
FileNodeMap.Remove(StreamNode);
}
}
Result = SetFileSizeInternal(FileNode, AllocationSize, true);
if (0 > Result)
{
return(Result);
}
if (ReplaceFileAttributes)
{
FileNode.FileInfo.FileAttributes = FileAttributes | (UInt32)System.IO.FileAttributes.Archive;
}
else
{
FileNode.FileInfo.FileAttributes |= FileAttributes | (UInt32)System.IO.FileAttributes.Archive;
}
FileNode.FileInfo.FileSize = 0;
FileNode.FileInfo.LastAccessTime =
FileNode.FileInfo.LastWriteTime =
FileNode.FileInfo.ChangeTime = (UInt64)DateTime.Now.ToFileTimeUtc();
FileInfo = FileNode.GetFileInfo();
return(STATUS_SUCCESS);
}
