mes/lib/posix/isatty.c

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/* -*-comment-start: "//";comment-end:""-*-
* GNU Mes --- Maxwell Equations of Software
* Copyright © 2016,2017,2018,2019 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
*
* This file is part of GNU Mes.
*
* GNU Mes is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or (at
* your option) any later version.
*
* GNU Mes 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNU Mes. If not, see <http://www.gnu.org/licenses/>.
*/
#include <unistd.h>
typedef unsigned char cc_t;
typedef unsigned int speed_t;
typedef unsigned int tcflag_t;
// Use termio, termios2?
#define NCCS 19
struct termios
{
tcflag_t c_iflag;
tcflag_t c_oflag;
tcflag_t c_cflag;
tcflag_t c_lflag;
cc_t c_line;
cc_t c_cc[NCCS];
};
struct ktermios
{
tcflag_t c_iflag;
tcflag_t c_oflag;
tcflag_t c_cflag;
tcflag_t c_lflag;
cc_t c_line;
cc_t c_cc[NCCS];
speed_t c_ispeed;
speed_t c_ospeed;
};
int
__tcgetattr (int filedes, struct termios *termios_p)
{
struct ktermios kernel_termios;
int r = ioctl (filedes, TCGETS, &kernel_termios);
termios_p->c_iflag = kernel_termios.c_iflag;
termios_p->c_oflag = kernel_termios.c_oflag;
termios_p->c_cflag = kernel_termios.c_cflag;
termios_p->c_lflag = kernel_termios.c_lflag;
termios_p->c_line = kernel_termios.c_line;
#if 0
termios_p->c_ispeed = kernel_termios.c_ispeed;
termios_p->c_ospeed = kernel_termios.c_ospeed;
#endif
memcpy (&termios_p->c_cc[0], &kernel_termios.c_cc[0], NCCS * sizeof (cc_t));
return r;
}
int
isatty (int filedes)
{
struct termios term;
return __tcgetattr (filedes, &term) == 0;
}