login/pty-internal.h

   1 /* Copyright (C) 1998 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Contributed by Zack Weinberg <zack@rabi.phys.columbia.edu>, 1998.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Library General Public License as
   7    published by the Free Software Foundation; either version 2 of the
   8    License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Library General Public License for more details.
  14
  15    You should have received a copy of the GNU Library General Public
  16    License along with the GNU C Library; see the file COPYING.LIB.  If not,
  17    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  18    Boston, MA 02111-1307, USA.  */
  19
  20 /* Internal constants used by the pseudoterminal handling code. */
  21
  22 #ifndef _PTY_INTERNAL_H
  23 #define _PTY_INTERNAL_H 1
  24
  25 /* Length of a buffer to hold a pty name. */
  26 #define PTYNAMELEN 15   /* "/dev/pts/65535$" */
  27
  28 /* Which group should pty slaves belong to: */
  29 #define TTY_GROUP "tty"
  30
  31 /* Communication between grantpt and pt_chown. */
  32 #define PTY_FD 3
  33 enum  /* failure modes */
  34 {
  35   FAIL_EBADF = 1,
  36   FAIL_EINVAL,
  37   FAIL_EACCES,
  38   FAIL_EXEC
  39 };
  40
  41 #endif