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+/*
+
+pty.h
+
+Author: Tatu Ylonen <ylo@cs.hut.fi>
+
+Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
+ All rights reserved
+
+Created: Fri Mar 17 05:03:28 1995 ylo
+
+Functions for allocating a pseudo-terminal and making it the controlling
+tty.
+
+*/
+
+/* RCSID("$Id: pty.h,v 1.1 1999/10/27 03:42:44 damien Exp $"); */
+
+#ifndef PTY_H
+#define PTY_H
+
+/* Allocates and opens a pty. Returns 0 if no pty could be allocated,
+ or nonzero if a pty was successfully allocated. On success, open file
+ descriptors for the pty and tty sides and the name of the tty side are
+ returned (the buffer must be able to hold at least 64 characters). */
+int pty_allocate(int *ptyfd, int *ttyfd, char *ttyname);
+
+/* Releases the tty. Its ownership is returned to root, and permissions to
+ 0666. */
+void pty_release(const char *ttyname);
+
+/* Makes the tty the processes controlling tty and sets it to sane modes.
+ This may need to reopen the tty to get rid of possible eavesdroppers. */
+void pty_make_controlling_tty(int *ttyfd, const char *ttyname);
+
+/* Changes the window size associated with the pty. */
+void pty_change_window_size(int ptyfd, int row, int col,
+ int xpixel, int ypixel);
+
+#endif /* PTY_H */