2 * Copyright (c) 2009 Nicholas Marriott <nicm@users.sourceforge.net>
3 * Copyright (c) 2012 Ross Palmer Mohn <rpmohn@waxandwane.org>
5 * Permission to use, copy, modify, and distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
14 * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
15 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
18 #include <sys/types.h>
19 #include <sys/ioctl.h>
29 #define debug(format, args...)
33 #define fatal(msg) debug("%s: %s", __func__, msg);
36 forkpty(int *master
, char *name
, struct termios
*tio
, struct winsize
*ws
)
42 if ((*master
= open("/dev/ptc", O_RDWR
|O_NOCTTY
)) == -1)
45 if ((path
= ttyname(*master
)) == NULL
)
47 if ((slave
= open(path
, O_RDWR
|O_NOCTTY
)) == -1)
50 switch (pid
= fork()) {
56 fd
= open(_PATH_TTY
, O_RDWR
|O_NOCTTY
);
58 ioctl(fd
, TIOCNOTTY
, NULL
);
65 fd
= open(_PATH_TTY
, O_RDWR
|O_NOCTTY
);
67 fatal("open succeeded (failed to disconnect)");
69 fd
= open(path
, O_RDWR
);
74 fd
= open("/dev/tty", O_WRONLY
);
79 if (tio
!= NULL
&& tcsetattr(slave
, TCSAFLUSH
, tio
) == -1)
80 fatal("tcsetattr failed");
81 if (ioctl(slave
, TIOCSWINSZ
, ws
) == -1)
82 fatal("ioctl failed");