library/termios_tcdrain.c
/*
* $Id: termios_tcdrain.c,v 1.4 2006-11-16 14:39:23 obarthel Exp $
*
* :ts=4
*
* Portable ISO 'C' (1994) runtime library for the Amiga computer
* Copyright (c) 2002-2015 by Olaf Barthel <obarthel (at) gmx.net>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Neither the name of Olaf Barthel nor the names of contributors
* may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _TERMIOS_HEADERS_H
#include "termios_headers.h"
#endif /* _TERMIOS_HEADERS_H */
/****************************************************************************/
#if defined(__amigaos4__) && !defined(Flush)
#define Flush(fh) FFlush(fh)
#endif /* __amigaos4__ && !Flush */
/****************************************************************************/
int
tcdrain(int file_descriptor)
{
int result = ERROR;
struct fd *fd;
ENTER();
SHOWVALUE(file_descriptor);
if(__check_abort_enabled)
__check_abort();
__stdio_lock();
fd = __get_file_descriptor(file_descriptor);
if(fd == NULL)
{
__set_errno(EBADF);
goto out;
}
__fd_lock(fd);
if(FLAG_IS_SET(fd->fd_Flags,FDF_TERMIOS))
{
struct termios *tios;
BPTR file;
tios = fd->fd_Aux;
switch(tios->type)
{
case TIOST_CONSOLE:
file = __resolve_fd_file(fd);
if(file == ZERO)
{
__set_errno(EBADF);
goto out;
}
/* This also discards any buffered input, but it does
not appear possible to drain the output buffer
otherwise. (?) */
if(CANNOT Flush(file))
goto out;
break;
default: /* TODO: Serial port support. */
__set_errno(ENXIO);
goto out;
}
result = OK;
}
else
{
result = fdatasync(file_descriptor); /* If called on a "regular" file. */
}
out:
__fd_unlock(fd);
__stdio_unlock();
RETURN(result);
return(result);
}