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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 1.5 2000/02/15 16:52:58 markus 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, int ttynamelen);
/*
* 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);
void pty_setowner(struct passwd *pw, const char *ttyname);
#endif /* PTY_H */
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