public void Write(ref ReparseDataBuffer buffer)
{
// set simple fields
buffer.ReparseTag = ReparseTag;
buffer.Reserved = 0;
StringBuilder sb = new StringBuilder();
sb.Append(SubstituteName);
sb.Append('\0');
sb.Append(PrintName);
sb.Append('\0');
// set subname
buffer.SubstituteNameOffset = 0;
buffer.SubstituteNameLength = (ushort)(SubstituteName != null ? SubstituteName.Length * sizeof(char) : 0);
// set printname
buffer.PrintNameOffset = (ushort)(buffer.SubstituteNameLength + 2);
buffer.PrintNameLength = (ushort)(PrintName != null ? PrintName.Length * sizeof(char) : 0);
// set length
buffer.ReparseDataLength = (ushort)(sb.Length * sizeof(char) + 8);
buffer.PathBuffer = sb.ToString();
}
public static bool GetReparseInformation(this FileSystemInfo dir, out ReparseDataBuffer buffer)
{
using (SafeFileHandle hFile = dir.GetHandle())
{
using (HG<ReparseDataBuffer> hg = new HG<ReparseDataBuffer>())
{
int bytesReturned = 0;
bool rc = Kernel32.DeviceIoControl(
hFile,
EIOControlCode.FsctlGetReparsePoint,
IntPtr.Zero,
0,
hg.Pointer,
hg.SizeOf,
ref bytesReturned,
IntPtr.Zero);
buffer = hg.Structure;
return rc;
}
}
}
public static bool SetReparseInformation(this FileSystemInfo dir, ReparseDataBuffer buffer)
{
using (SafeFileHandle hFile = dir.GetHandle())
{
using (HG<ReparseDataBuffer> hg = new HG<ReparseDataBuffer>(buffer))
{
int bytesReturned = 0;
bool rc = Kernel32.DeviceIoControl(
hFile,
EIOControlCode.FsctlSetReparsePoint,
hg.Pointer,
(int)(buffer.ReparseDataLength + Constants.REPARSE_MOUNTPOINT_HEADER_SIZE),
IntPtr.Zero,
0,
ref bytesReturned,
IntPtr.Zero);
return rc;
}
}
}
public void Read(ref ReparseDataBuffer buffer)
{
ReparseTag = buffer.ReparseTag;
SubstituteName = buffer.PathBuffer.Substring(buffer.SubstituteNameOffset, buffer.SubstituteNameLength / sizeof(char));
PrintName = buffer.PathBuffer.Substring(buffer.PrintNameOffset, buffer.PrintNameLength / sizeof(char));
}
public ReparseDataBuffer Build()
{
ReparseDataBuffer buffer = new ReparseDataBuffer();
Write(ref buffer);
return buffer;
}