/// <summary>
/// Get a named attribute from the pipe.
/// </summary>
/// <param name="attribute_type">The attribute type to query.</param>
/// <param name="name">The name of the attribute.</param>
/// <param name="throw_on_error">True to throw on error.</param>
/// <returns>The attribute value as a byte array.</returns>
/// <exception cref="NtException">Thrown on error.</exception>
public NtResult <byte[]> GetAttribute(PipeAttributeType attribute_type, string name, bool throw_on_error)
{
NtIoControlCode ioctl = GetAttributeToIoCtl(attribute_type);
int size = 128;
byte[] name_buffer = Encoding.ASCII.GetBytes(name + "\0");
while (size < 4096)
{
var result = FsControl(ioctl, name_buffer, size, false);
if (result.IsSuccess)
{
return(result);
}
if (result.Status != NtStatus.STATUS_BUFFER_TOO_SMALL)
{
result.Status.ToNtException(throw_on_error);
return(result);
}
size *= 2;
}
return(NtStatus.STATUS_BUFFER_TOO_SMALL.CreateResultFromError <byte[]>(throw_on_error));
}
/// <summary>
/// Convert a control code to a known name.
/// </summary>
/// <param name="control_code">The control code.</param>
/// <returns>The known name, or an empty string.</returns>
public static string KnownControlCodeToName(NtIoControlCode control_code)
{
if (_control_code_to_name.ContainsKey(control_code))
{
return(_control_code_to_name[control_code]);
}
return(string.Empty);
}
/// <summary>
/// Set a named attribute for a pipe.
/// </summary>
/// <param name="attribute_type">The attribute type to set.</param>
/// <param name="name">The name of the attribute.</param>
/// <param name="value">The value to set.</param>
/// <param name="throw_on_error">True to throw on error.</param>
/// <returns>The status code for the attribute.</returns>
/// <exception cref="NtException">Thrown on error.</exception>
public NtStatus SetAttribute(PipeAttributeType attribute_type, string name, byte[] value, bool throw_on_error)
{
NtIoControlCode ioctl = SetAttributeToIoCtl(attribute_type);
byte[] name_bytes = Encoding.ASCII.GetBytes(name);
MemoryStream stm = new MemoryStream();
stm.Write(name_bytes, 0, name_bytes.Length);
stm.WriteByte(0);
stm.Write(value, 0, value.Length);
return(FsControl(ioctl, stm.ToArray(), 0, throw_on_error).Status);
}
