public void HardLinkCount()
{
NtfsFileSystem ntfs = FileSystemSource.NtfsFileSystem();
using (Stream s = ntfs.OpenFile("ALongFileName.txt", FileMode.CreateNew)) { }
Assert.Equal(1, ntfs.GetHardLinkCount("ALongFileName.txt"));
ntfs.CreateHardLink("ALongFileName.txt", "AHardLink.TXT");
Assert.Equal(2, ntfs.GetHardLinkCount("ALongFileName.txt"));
ntfs.CreateDirectory("DIR");
ntfs.CreateHardLink(@"ALongFileName.txt", @"DIR\SHORTLNK.TXT");
Assert.Equal(3, ntfs.GetHardLinkCount("ALongFileName.txt"));
// If we enumerate short names, then the initial long name results in two 'hardlinks'
ntfs.NtfsOptions.HideDosFileNames = false;
Assert.Equal(4, ntfs.GetHardLinkCount("ALongFileName.txt"));
}
private void CopyFiles(NtfsFileSystem sourceNtfs, NtfsFileSystem destNtfs, string path, bool subs)
{
if (subs)
{
foreach (var dir in sourceNtfs.GetDirectories(path))
{
if (!IsExcluded(dir))
{
int hardLinksRemaining = sourceNtfs.GetHardLinkCount(dir) - 1;
bool newDir = false;
long sourceFileId = sourceNtfs.GetFileId(dir);
string refPath;
if (_uniqueFiles.TryGetValue(sourceFileId, out refPath))
{
// If this is another name for a known dir, recreate the hard link
destNtfs.CreateHardLink(refPath, dir);
}
else
{
destNtfs.CreateDirectory(dir);
newDir = true;
FileAttributes fileAttrs = sourceNtfs.GetAttributes(dir);
if ((fileAttrs & FileAttributes.ReparsePoint) != 0)
{
destNtfs.SetReparsePoint(dir, sourceNtfs.GetReparsePoint(dir));
}
destNtfs.SetAttributes(dir, fileAttrs);
destNtfs.SetSecurity(dir, sourceNtfs.GetSecurity(dir));
}
// File may have a short name
string shortName = sourceNtfs.GetShortName(dir);
if (!string.IsNullOrEmpty(shortName) && shortName != dir)
{
destNtfs.SetShortName(dir, shortName);
--hardLinksRemaining;
}
if (newDir)
{
if (hardLinksRemaining > 0)
{
_uniqueFiles[sourceFileId] = dir;
}
CopyFiles(sourceNtfs, destNtfs, dir, subs);
}
// Set standard information last (includes modification timestamps)
destNtfs.SetFileStandardInformation(dir, sourceNtfs.GetFileStandardInformation(dir));
}
}
}
foreach (var file in sourceNtfs.GetFiles(path))
{
Console.WriteLine(file);
int hardLinksRemaining = sourceNtfs.GetHardLinkCount(file) - 1;
long sourceFileId = sourceNtfs.GetFileId(file);
string refPath;
if (_uniqueFiles.TryGetValue(sourceFileId, out refPath))
{
// If this is another name for a known file, recreate the hard link
destNtfs.CreateHardLink(refPath, file);
}
else
{
CopyFile(sourceNtfs, destNtfs, file);
if (hardLinksRemaining > 0)
{
_uniqueFiles[sourceFileId] = file;
}
}
// File may have a short name
string shortName = sourceNtfs.GetShortName(file);
if (!string.IsNullOrEmpty(shortName) && shortName != file)
{
destNtfs.SetShortName(file, shortName);
}
}
}