1 /* Copyright (C) 1998-2017 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.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
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 Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <http://www.gnu.org/licenses/>. */
25 /* Prefix for master pseudo terminal nodes. */
26 #define _PATH_PTY "/dev/pty"
29 /* Letters indicating a series of pseudo terminals. */
31 #define PTYNAME1 "pqrsPQRS"
33 const char __libc_ptyname1
[] attribute_hidden
= PTYNAME1
;
35 /* Letters indicating the position within a series. */
37 #define PTYNAME2 "0123456789abcdefghijklmnopqrstuv";
39 const char __libc_ptyname2
[] attribute_hidden
= PTYNAME2
;
42 /* Open a master pseudo terminal and return its file descriptor. */
46 char buf
[sizeof (_PATH_PTY
) + 2];
50 s
= __mempcpy (buf
, _PATH_PTY
, sizeof (_PATH_PTY
) - 1);
51 /* s[0] and s[1] will be filled in the loop. */
54 for (p
= __libc_ptyname1
; *p
!= '\0'; ++p
)
58 for (q
= __libc_ptyname2
; *q
!= '\0'; ++q
)
64 fd
= __open (buf
, O_RDWR
);
78 weak_alias (__getpt
, getpt
)
80 #ifndef HAVE_POSIX_OPENPT
81 /* We cannot define posix_openpt in general for BSD systems. */
83 __posix_openpt (int oflag
)
88 weak_alias (__posix_openpt
, posix_openpt
)
90 stub_warning (posix_openpt
)