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/*
* 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 <errno.h>
#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);
}
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