/// <summary>
/// Creates a <see cref="TrackedFileContentInfo"/> with an associated change tracking subscription.
/// </summary>
public TrackedFileContentInfo(FileContentInfo fileContentInfo, FileChangeTrackingSubscription subscription, PathAtom fileName, ReparsePointInfo?reparsePointInfo = null)
{
Subscription = subscription;
FileContentInfo = fileContentInfo;
FileName = fileName;
ReparsePointInfo = reparsePointInfo ?? ReparsePointInfo.CreateNoneReparsePoint();
}
/// <nodoc/>
public FileMaterializationInfo GetFileMaterializationInfo(PathTable pathTable)
{
return new FileMaterializationInfo(
new FileContentInfo(ContentHash.ToContentHash(), FileContentInfo.LengthAndExistence.Deserialize(Length)),
!string.IsNullOrEmpty(FileName) ? PathAtom.Create(pathTable.StringTable, FileName) : PathAtom.Invalid,
ReparsePointInfo.Create(ReparsePointType.ToReparsePointType(), ReparsePointTarget));
}
/// <summary>
/// Creates a <see cref="TrackedFileContentInfo"/> with an associated change tracking subscription.
/// </summary>
public TrackedFileContentInfo(FileContentInfo fileContentInfo, FileChangeTrackingSubscription subscription, PathAtom fileName, ReparsePointInfo?reparsePointInfo = null, bool isUndeclaredFileRewrite = false)
{
Subscription = subscription;
FileContentInfo = fileContentInfo;
FileName = fileName;
ReparsePointInfo = reparsePointInfo ?? ReparsePointInfo.CreateNoneReparsePoint();
IsUndeclaredFileRewrite = isUndeclaredFileRewrite;
}
private static ReparsePointInfo InternalGetTarget(SafeFileHandle handle)
{
int outBufferSize = Marshal.SizeOf(typeof(REPARSE_DATA_BUFFER));
IntPtr outBuffer = Marshal.AllocHGlobal(outBufferSize);
try
{
int bytesReturned;
bool result = DeviceIoControl(handle.DangerousGetHandle(), FSCTL_GET_REPARSE_POINT,
IntPtr.Zero, 0, outBuffer, outBufferSize, out bytesReturned, IntPtr.Zero);
if (!result)
{
int error = Marshal.GetLastWin32Error();
if (error == ERROR_NOT_A_REPARSE_POINT)
{
return(null);
}
ThrowLastWin32Error("Unable to get information about junction point.");
}
REPARSE_DATA_BUFFER reparseDataBuffer = (REPARSE_DATA_BUFFER)
Marshal.PtrToStructure(outBuffer, typeof(REPARSE_DATA_BUFFER));
var res = new ReparsePointInfo
{
ReparseTag = (ReparsePointTag)reparseDataBuffer.ReparseTag,
IsJunction = reparseDataBuffer.ReparseTag == IO_REPARSE_TAG_MOUNT_POINT,
};
if (!res.IsJunction)
{
return(res);
}
res.SubstituteName = Encoding.Unicode.GetString(reparseDataBuffer.PathBuffer,
reparseDataBuffer.SubstituteNameOffset, reparseDataBuffer.SubstituteNameLength);
res.PrintName = Encoding.Unicode.GetString(reparseDataBuffer.PathBuffer,
reparseDataBuffer.PrintNameOffset, reparseDataBuffer.PrintNameLength);
return(res);
}
finally
{
Marshal.FreeHGlobal(outBuffer);
}
}