|  | /* Internal defenitions and declarations for pseudo terminal functions. | 
|  | Copyright (C) 1998-2016 Free Software Foundation, Inc. | 
|  | This file is part of the GNU C Library. | 
|  | Contributed by Zack Weinberg <zack@rabi.phys.columbia.edu>, 1998. | 
|  |  | 
|  | The GNU C Library is free software; you can redistribute it and/or | 
|  | modify it under the terms of the GNU Lesser General Public | 
|  | License as published by the Free Software Foundation; either | 
|  | version 2.1 of the License, or (at your option) any later version. | 
|  |  | 
|  | The GNU C Library is distributed in the hope that it will be useful, | 
|  | but WITHOUT ANY WARRANTY; without even the implied warranty of | 
|  | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU | 
|  | Lesser General Public License for more details. | 
|  |  | 
|  | You should have received a copy of the GNU Lesser General Public | 
|  | License along with the GNU C Library; if not, see | 
|  | <http://www.gnu.org/licenses/>.  */ | 
|  |  | 
|  | #ifndef _PTY_PRIVATE_H | 
|  | #define _PTY_PRIVATE_H 1 | 
|  |  | 
|  | /* The group slave pseudo terminals belong to.  */ | 
|  | #define TTY_GROUP "tty" | 
|  |  | 
|  | /* The file descriptor connected to the master pseudo terminal.  */ | 
|  | #define PTY_FILENO 3 | 
|  |  | 
|  | /* Path to the helper program that implements `grantpt' in user space.  */ | 
|  | #define _PATH_PT_CHOWN LIBEXECDIR "/pt_chown" | 
|  |  | 
|  | /* Test whether given TTY is really a Unix98 pseudo terminal.  */ | 
|  | /* #define unix98_pseudo_p(Dev) ... */ | 
|  |  | 
|  | /* Exit codes for the helper program.  */ | 
|  | enum  /* failure modes */ | 
|  | { | 
|  | FAIL_EBADF = 1, | 
|  | FAIL_EINVAL, | 
|  | FAIL_EACCES, | 
|  | FAIL_EXEC, | 
|  | FAIL_ENOMEM | 
|  | }; | 
|  |  | 
|  | #endif /* pty-private.h  */ |