1 /* Internal defenitions and declarations for pseudo terminal functions. 2 Copyright (C) 1998-2022 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 <https://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. */ 36 enum /* 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