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/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* 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 HOLDER 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.
*/
#include <Kernel/API/Syscall.h>
#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;
}
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);
}
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);
}
}
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