1 /* Open the master side of a pseudo-terminal.
2 Copyright (C) 2010-2011 Free Software Foundation, Inc.
4 This program is free software: you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 3 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program. If not, see <http://www.gnu.org/licenses/>. */
24 #if defined __OpenBSD__
25 # include <sys/ioctl.h>
30 posix_openpt (int flags)
36 master = open ("/dev/ptc", flags);
38 #elif (defined _WIN32 || defined __WIN32__) && !defined __CYGWIN__ /* mingw */
40 /* Mingw lacks pseudo-terminals altogether. */
44 #elif defined __OpenBSD__
46 /* On OpenBSD, master and slave of a pseudo-terminal are allocated together,
47 by opening /dev/ptm and applying the PTMGET ioctl to it. */
51 fd = open (PATH_PTMDEV, O_RDWR);
54 if (ioctl (fd, PTMGET, &data) >= 0)
62 int saved_errno = errno;
71 #else /* MacOS X, Minix, HP-UX, IRIX, OSF/1, Solaris 9, Cygwin 1.5 */
73 /* Most systems that lack posix_openpt() have /dev/ptmx. */
74 master = open ("/dev/ptmx", flags);