1/* Internal defenitions and declarations for pseudo terminal functions.
2 Copyright (C) 1998-2018 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4 Contributed by Zack Weinberg <zack@rabi.phys.columbia.edu>, 1998.
5
6 The GNU C Library is free software; you can redistribute it and/or
7 modify it under the terms of the GNU Lesser General Public
8 License as published by the Free Software Foundation; either
9 version 2.1 of the License, or (at your option) any later version.
10
11 The GNU C Library is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Lesser General Public License for more details.
15
16 You should have received a copy of the GNU Lesser General Public
17 License along with the GNU C Library; if not, see
18 <http://www.gnu.org/licenses/>. */
19
20#ifndef _PTY_PRIVATE_H
21#define _PTY_PRIVATE_H 1
22
23/* The group slave pseudo terminals belong to. */
24#define TTY_GROUP "tty"
25
26/* The file descriptor connected to the master pseudo terminal. */
27#define PTY_FILENO 3
28
29/* Path to the helper program that implements `grantpt' in user space. */
30#define _PATH_PT_CHOWN LIBEXECDIR "/pt_chown"
31
32/* Test whether given TTY is really a Unix98 pseudo terminal. */
33/* #define unix98_pseudo_p(Dev) ... */
34
35/* Exit codes for the helper program. */
36enum /* failure modes */
37{
38 FAIL_EBADF = 1,
39 FAIL_EINVAL,
40 FAIL_EACCES,
41 FAIL_EXEC,
42 FAIL_ENOMEM
43};
44
45#endif /* pty-private.h */
46