2 * Author: Tatu Ylonen <ylo@cs.hut.fi>
3 * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
5 * Functions for allocating a pseudo-terminal and making it the controlling
8 * As far as I am concerned, the code I have written for this software
9 * can be used freely for any purpose. Any derived versions of this
10 * software must be clearly marked as such, and if the derived work is
11 * incompatible with the protocol description in the RFC file, it must be
12 * called by a name other than "ssh" or "Secure Shell".
15 /* RCSID("$OpenBSD: sshpty.h,v 1.1 2001/03/04 01:46:30 djm Exp $"); */
21 * Allocates and opens a pty. Returns 0 if no pty could be allocated, or
22 * nonzero if a pty was successfully allocated. On success, open file
23 * descriptors for the pty and tty sides and the name of the tty side are
24 * returned (the buffer must be able to hold at least 64 characters).
26 int pty_allocate(int *ptyfd, int *ttyfd, char *ttyname, int ttynamelen);
29 * Releases the tty. Its ownership is returned to root, and permissions to
32 void pty_release(const char *ttyname);
35 * Makes the tty the processes controlling tty and sets it to sane modes.
36 * This may need to reopen the tty to get rid of possible eavesdroppers.
38 void pty_make_controlling_tty(int *ttyfd, const char *ttyname);
40 /* Changes the window size associated with the pty. */
42 pty_change_window_size(int ptyfd, int row, int col,
43 int xpixel, int ypixel);
45 void pty_setowner(struct passwd *pw, const char *ttyname);