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/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <assert.h>
#include <errno.h>
#include <sys/ioctl.h>
#include <termios.h>
extern "C" {
int tcgetattr(int fd, struct termios* t)
{
return ioctl(fd, TCGETS, t);
}
int tcsetattr(int fd, int optional_actions, const struct termios* t)
{
switch (optional_actions) {
case TCSANOW:
return ioctl(fd, TCSETS, t);
case TCSADRAIN:
return ioctl(fd, TCSETSW, t);
case TCSAFLUSH:
return ioctl(fd, TCSETSF, t);
}
errno = EINVAL;
return -1;
}
// https://pubs.opengroup.org/onlinepubs/009695399/functions/tcsendbreak.html
int tcsendbreak([[maybe_unused]] int fd, [[maybe_unused]] int duration)
{
// FIXME: Implement this for real.
return 0;
}
int tcflow([[maybe_unused]] int fd, [[maybe_unused]] int action)
{
errno = EINVAL;
return -1;
}
int tcflush(int fd, int queue_selector)
{
return ioctl(fd, TCFLSH, queue_selector);
}
// https://pubs.opengroup.org/onlinepubs/009695399/functions/tcdrain.html
int tcdrain([[maybe_unused]] int fd)
{
// FIXME: Implement this for real.
return 0;
}
speed_t cfgetispeed(const struct termios* tp)
{
return tp->c_ispeed;
}
speed_t cfgetospeed(const struct termios* tp)
{
return tp->c_ospeed;
}
static int baud_rate_from_speed(speed_t speed)
{
int rate = -EINVAL;
switch (speed) {
case B0:
rate = 0;
break;
case B50:
rate = 50;
break;
case B75:
rate = 75;
break;
case B110:
rate = 110;
break;
case B134:
rate = 134;
break;
case B150:
rate = 150;
break;
case B200:
rate = 200;
break;
case B300:
rate = 300;
break;
case B600:
rate = 600;
break;
case B1200:
rate = 1200;
break;
case B1800:
rate = 1800;
break;
case B2400:
rate = 2400;
break;
case B4800:
rate = 4800;
break;
case B9600:
rate = 9600;
break;
case B19200:
rate = 19200;
break;
case B38400:
rate = 38400;
break;
}
return rate;
}
int cfsetispeed(struct termios* tp, speed_t speed)
{
auto ispeed = baud_rate_from_speed(speed);
if (ispeed > 0) {
tp->c_ispeed = ispeed;
}
__RETURN_WITH_ERRNO(ispeed, 0, -1);
}
int cfsetospeed(struct termios* tp, speed_t speed)
{
auto ospeed = baud_rate_from_speed(speed);
if (ospeed > 0) {
tp->c_ispeed = ospeed;
}
__RETURN_WITH_ERRNO(ospeed, 0, -1);
}
void cfmakeraw(struct termios* tp)
{
if (!tp)
return;
auto& termios = *tp;
termios.c_iflag &= ~(IGNBRK | BRKINT | PARMRK | ISTRIP | INLCR | IGNCR | ICRNL | IXON);
termios.c_lflag &= ~OPOST;
termios.c_cflag &= ~(ECHO | ECHONL | ICANON | ISIG | IEXTEN);
termios.c_cflag |= CS8;
}
}
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