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/* Copyright (C) 2008 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by David Bartley <dtbartle@csclub.uwaterloo.ca>, 2008.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include <stdlib.h>
#include <streams/stropts.h>
#include <sys/ptms.h>
#include <stddef.h>
#include <errno.h>
int
unlockpt (int fd)
{
/* Send UNLKPT down. */
struct strioctl si;
si.ic_cmd = UNLKPT;
si.ic_timout = 0;
si.ic_len = 0;
si.ic_dp = NULL;
int res = (ioctl (fd, I_STR, &si) < 0) ? -1 :0;
if (res != 0 && errno == ENOTTY)
__set_errno (EINVAL);
return res;
}
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