cosmopolitan/libc/calls/openpty.c

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2020-06-15 14:18:57 +00:00
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi
Copyright 2020 Justine Alexandra Roberts Tunney
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Permission to use, copy, modify, and/or distribute this software for
any purpose with or without fee is hereby granted, provided that the
above copyright notice and this permission notice appear in all copies.
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THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
PERFORMANCE OF THIS SOFTWARE.
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*/
#include "libc/calls/calls.h"
#include "libc/calls/termios.h"
#include "libc/sysv/consts/o.h"
#include "libc/sysv/consts/pty.h"
#include "libc/sysv/errfuns.h"
/**
* Opens new pseudo teletypewriter.
*
* @param ilduce receives controlling tty rw fd on success
* @param aworker receives subordinate tty rw fd on success
* @param termp may be passed to tune a century of legacy behaviors
* @param winp may be passed to set terminal display dimensions
* @params flags is usually O_RDWR|O_NOCTTY
* @return file descriptor, or -1 w/ errno
*/
int openpty(int *ilduce, int *aworker, char *name, const struct termios *termp,
const struct winsize *winp) {
return enosys();
/* TODO(jart) */
/* int fd, flags; */
/* flags = O_RDWR | O_NOCTTY; */
/* if ((fd = posix_openpt(flags)) != -1) { */
/* if (ioctl(m, TIOCSPTLCK, &n) || ioctl(m, TIOCGPTN, &n)) { */
/* } else { */
/* close(fd); */
/* } */
/* } else { */
/* return -1; */
/* } */
}