new file mode 100644
--- /dev/null
+++ b/libqterminal/unix/kpty.h
@@ -0,0 +1,189 @@
+/* This file is part of the KDE libraries
+
+    Copyright (C) 2003,2007 Oswald Buddenhagen <ossi@kde.org>
+
+    Rewritten for QT4 by e_k <e_k at users.sourceforge.net>, Copyright (C)2008
+
+    This library is free software; you can redistribute it and/or
+    modify it under the terms of the GNU Library General Public
+    License as published by the Free Software Foundation; either
+    version 2 of the License, or (at your option) any later version.
+
+    This library is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+    Library General Public License for more details.
+
+    You should have received a copy of the GNU Library General Public License
+    along with this library; see the file COPYING.LIB.  If not, write to
+    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+    Boston, MA 02110-1301, USA.
+*/
+
+#ifndef kpty_h
+#define kpty_h
+
+#include <QtCore>
+
+struct KPtyPrivate;
+struct termios;
+
+/**
+ * Provides primitives for opening & closing a pseudo TTY pair, assigning the
+ * controlling TTY, utmp registration and setting various terminal attributes.
+ */
+class KPty {
+    Q_DECLARE_PRIVATE(KPty)
+
+public:
+
+  /**
+   * Constructor
+   */
+  KPty();
+  KPty(int masterFd, int slaveFd);
+
+  /**
+   * Destructor:
+   *
+   *  If the pty is still open, it will be closed. Note, however, that
+   *  an utmp registration is @em not undone.
+  */
+  ~KPty();
+
+  /**
+   * Create a pty master/slave pair.
+   *
+   * @return true if a pty pair was successfully opened
+   */
+  bool open();
+
+  /**
+   * Close the pty master/slave pair.
+   */
+  void close();
+
+  /**
+   * Close the pty slave descriptor.
+   *
+   * When creating the pty, KPty also opens the slave and keeps it open.
+   * Consequently the master will never receive an EOF notification.
+   * Usually this is the desired behavior, as a closed pty slave can be
+   * reopened any time - unlike a pipe or socket. However, in some cases
+   * pipe-alike behavior might be desired.
+   *
+   * After this function was called, slaveFd() and setCTty() cannot be
+   * used.
+   */
+  void closeSlave();
+
+  /**
+   * Creates a new session and process group and makes this pty the
+   * controlling tty.
+   */
+  void setCTty();
+
+  /**
+   * Creates an utmp entry for the tty.
+   * This function must be called after calling setCTty and
+   * making this pty the stdin.
+   * @param user the user to be logged on
+   * @param remotehost the host from which the login is coming. This is
+   *  @em not the local host. For remote logins it should be the hostname
+   *  of the client. For local logins from inside an X session it should
+   *  be the name of the X display. Otherwise it should be empty.
+   */
+  void login(const char *user = 0, const char *remotehost = 0);
+
+  /**
+   * Removes the utmp entry for this tty.
+   */
+  void logout();
+
+  /**
+   * Wrapper around tcgetattr(3).
+   *
+   * This function can be used only while the PTY is open.
+   * You will need an #include &lt;termios.h&gt; to do anything useful
+   * with it.
+   *
+   * @param ttmode a pointer to a termios structure.
+   *  Note: when declaring ttmode, @c struct @c ::termios must be used -
+   *  without the '::' some version of HP-UX thinks, this declares
+   *  the struct in your class, in your method.
+   * @return @c true on success, false otherwise
+   */
+  bool tcGetAttr(struct ::termios *ttmode) const;
+
+  /**
+   * Wrapper around tcsetattr(3) with mode TCSANOW.
+   *
+   * This function can be used only while the PTY is open.
+   *
+   * @param ttmode a pointer to a termios structure.
+   * @return @c true on success, false otherwise. Note that success means
+   *  that @em at @em least @em one attribute could be set.
+   */
+  bool tcSetAttr(struct ::termios *ttmode);
+
+  /**
+   * Change the logical (screen) size of the pty.
+   * The default is 24 lines by 80 columns.
+   *
+   * This function can be used only while the PTY is open.
+   *
+   * @param lines the number of rows
+   * @param columns the number of columns
+   * @return @c true on success, false otherwise
+   */
+  bool setWinSize(int lines, int columns);
+
+  /**
+   * Set whether the pty should echo input.
+   *
+   * Echo is on by default.
+   * If the output of automatically fed (non-interactive) PTY clients
+   * needs to be parsed, disabling echo often makes it much simpler.
+   *
+   * This function can be used only while the PTY is open.
+   *
+   * @param echo true if input should be echoed.
+   * @return @c true on success, false otherwise
+   */
+  bool setEcho(bool echo);
+
+  /**
+   * @return the name of the slave pty device.
+   *
+   * This function should be called only while the pty is open.
+   */
+  const char *ttyName() const;
+
+  /**
+   * @return the file descriptor of the master pty
+   *
+   * This function should be called only while the pty is open.
+   */
+  int masterFd() const;
+
+  /**
+   * @return the file descriptor of the slave pty
+   *
+   * This function should be called only while the pty slave is open.
+   */
+  int slaveFd() const;
+
+protected:
+  /**
+   * @internal
+   */
+  KPty(KPtyPrivate *d);
+
+  /**
+   * @internal
+   */
+  KPtyPrivate * const d_ptr;
+};
+
+#endif
+