| /* |
| * Copyright (C) 2008 The Android Open Source Project |
| * 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. |
| * * 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 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. |
| */ |
| |
| #include <termios.h> |
| #include <unistd.h> |
| |
| static speed_t cfgetspeed(const termios* s) { |
| return (s->c_cflag & CBAUD); |
| } |
| |
| speed_t cfgetispeed(const termios* s) { |
| return cfgetspeed(s); |
| } |
| |
| speed_t cfgetospeed(const termios* s) { |
| return cfgetspeed(s); |
| } |
| |
| void cfmakeraw(termios* s) { |
| s->c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP|INLCR|IGNCR|ICRNL|IXON); |
| s->c_oflag &= ~OPOST; |
| s->c_lflag &= ~(ECHO|ECHONL|ICANON|ISIG|IEXTEN); |
| s->c_cflag &= ~(CSIZE|PARENB); |
| s->c_cflag |= CS8; |
| } |
| |
| int cfsetispeed(termios* s, speed_t speed) { |
| return cfsetspeed(s, speed); |
| } |
| |
| int cfsetospeed(termios* s, speed_t speed) { |
| return cfsetspeed(s, speed); |
| } |
| |
| int cfsetspeed(termios* s, speed_t speed) { |
| // TODO: check 'speed' is valid. |
| s->c_cflag = (s->c_cflag & ~CBAUD) | (speed & CBAUD); |
| return 0; |
| } |
| |
| int tcdrain(int fd) { |
| // A non-zero argument to TCSBRK means "don't send a break". |
| // The drain is a side-effect of the ioctl! |
| return ioctl(fd, TCSBRK, static_cast<unsigned long>(1)); |
| } |
| |
| int tcflow(int fd, int action) { |
| return ioctl(fd, TCXONC, static_cast<unsigned long>(action)); |
| } |
| |
| int tcflush(int fd, int queue) { |
| return ioctl(fd, TCFLSH, static_cast<unsigned long>(queue)); |
| } |
| |
| int tcgetattr(int fd, termios* s) { |
| return ioctl(fd, TCGETS, s); |
| } |
| |
| pid_t tcgetsid(int fd) { |
| pid_t sid; |
| if (ioctl(fd, TIOCGSID, &sid) == -1) { |
| return -1; |
| } |
| return sid; |
| } |
| |
| int tcsendbreak(int fd, int duration) { |
| return ioctl(fd, TCSBRKP, static_cast<unsigned long>(duration)); |
| } |
| |
| int tcsetattr(int fd, int optional_actions, const termios* s) { |
| int cmd; |
| switch (optional_actions) { |
| case TCSANOW: cmd = TCSETS; break; |
| case TCSADRAIN: cmd = TCSETSW; break; |
| case TCSAFLUSH: cmd = TCSETSF; break; |
| default: errno = EINVAL; return -1; |
| } |
| return ioctl(fd, cmd, s); |
| } |
| |
| pid_t tcgetpgrp(int fd) { |
| pid_t pid; |
| if (ioctl(fd, TIOCGPGRP, &pid) == -1) { |
| return -1; |
| } |
| return pid; |
| } |
| |
| int tcsetpgrp(int fd, pid_t pid) { |
| return ioctl(fd, TIOCSPGRP, &pid); |
| } |