mirror of
https://github.com/RGBCube/serenity
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1682f0b760
SPDX License Identifiers are a more compact / standardized way of representing file license information. See: https://spdx.dev/resources/use/#identifiers This was done with the `ambr` search and replace tool. ambr --no-parent-ignore --key-from-file --rep-from-file key.txt rep.txt *
140 lines
2.5 KiB
C++
140 lines
2.5 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <assert.h>
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#include <errno.h>
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#include <sys/ioctl.h>
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#include <termios.h>
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extern "C" {
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int tcgetattr(int fd, struct termios* t)
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{
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return ioctl(fd, TCGETS, t);
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}
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int tcsetattr(int fd, int optional_actions, const struct termios* t)
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{
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switch (optional_actions) {
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case TCSANOW:
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return ioctl(fd, TCSETS, t);
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case TCSADRAIN:
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return ioctl(fd, TCSETSW, t);
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case TCSAFLUSH:
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return ioctl(fd, TCSETSF, t);
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}
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errno = EINVAL;
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return -1;
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}
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int tcflow([[maybe_unused]] int fd, [[maybe_unused]] int action)
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{
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errno = EINVAL;
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return -1;
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}
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int tcflush(int fd, int queue_selector)
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{
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return ioctl(fd, TCFLSH, queue_selector);
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}
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speed_t cfgetispeed(const struct termios* tp)
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{
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return tp->c_ispeed;
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}
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speed_t cfgetospeed(const struct termios* tp)
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{
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return tp->c_ospeed;
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}
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static int baud_rate_from_speed(speed_t speed)
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{
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int rate = -EINVAL;
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switch (speed) {
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case B0:
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rate = 0;
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break;
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case B50:
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rate = 50;
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break;
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case B75:
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rate = 75;
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break;
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case B110:
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rate = 110;
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break;
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case B134:
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rate = 134;
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break;
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case B150:
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rate = 150;
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break;
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case B200:
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rate = 200;
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break;
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case B300:
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rate = 300;
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break;
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case B600:
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rate = 600;
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break;
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case B1200:
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rate = 1200;
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break;
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case B1800:
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rate = 1800;
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break;
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case B2400:
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rate = 2400;
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break;
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case B4800:
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rate = 4800;
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break;
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case B9600:
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rate = 9600;
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break;
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case B19200:
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rate = 19200;
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break;
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case B38400:
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rate = 38400;
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break;
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}
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return rate;
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}
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int cfsetispeed(struct termios* tp, speed_t speed)
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{
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auto ispeed = baud_rate_from_speed(speed);
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if (ispeed > 0) {
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tp->c_ispeed = ispeed;
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}
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__RETURN_WITH_ERRNO(ispeed, 0, -1);
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}
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int cfsetospeed(struct termios* tp, speed_t speed)
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{
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auto ospeed = baud_rate_from_speed(speed);
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if (ospeed > 0) {
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tp->c_ispeed = ospeed;
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}
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__RETURN_WITH_ERRNO(ospeed, 0, -1);
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}
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void cfmakeraw(struct termios* tp)
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{
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if (!tp)
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return;
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auto& termios = *tp;
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termios.c_iflag &= ~(IGNBRK | BRKINT | PARMRK | ISTRIP | INLCR | IGNCR | ICRNL | IXON);
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termios.c_lflag &= ~OPOST;
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termios.c_cflag &= ~(ECHO | ECHONL | ICANON | ISIG | IEXTEN);
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termios.c_cflag |= CS8;
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}
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}
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