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https://github.com/troglobit/finit.git
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Joachim Nilsson
b8190c8a2a
This patch relocates the speed parser so that exec.c can set the TTY speed properly as soon as possible. For external getty we make sure to not touch the TTY speed. Signed-off-by: Joachim Nilsson <troglobit@gmail.com>
126 lines
3.4 KiB
C
126 lines
3.4 KiB
C
/* Reset terminal line settings (stty sane)
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*
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* Copyright (c) 2016-2017 Joachim Nilsson <troglobit@gmail.com>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include <errno.h>
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#include <stdlib.h>
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#include <unistd.h> /* _POSIX_VDISABLE */
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#include <sys/ttydefaults.h> /* Not included by default in musl libc */
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#include <termios.h>
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speed_t stty_parse_speed(char *baud)
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{
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char *ptr;
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size_t i;
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unsigned long val;
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struct { unsigned long val; speed_t speed; } v2s[] = {
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{ 0, B0 },
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{ 50, B50 },
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{ 75, B75 },
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{ 110, B110 },
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{ 134, B134 },
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{ 150, B150 },
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{ 200, B200 },
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{ 300, B300 },
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{ 600, B600 },
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{ 1200, B1200 },
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{ 1800, B1800 },
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{ 2400, B2400 },
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{ 4800, B4800 },
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{ 9600, B9600 },
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{ 19200, B19200 },
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{ 38400, B38400 },
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{ 57600, B57600 },
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{ 115200, B115200 },
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{ 230400, B230400 },
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{ 460800, B460800 },
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{ 500000, B500000 },
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{ 576000, B576000 },
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{ 921600, B921600 },
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{ 1000000, B1000000 },
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{ 1152000, B1152000 },
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{ 1500000, B1500000 },
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{ 2000000, B2000000 },
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{ 2500000, B2500000 },
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{ 3000000, B3000000 },
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{ 3500000, B3500000 },
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{ 4000000, B4000000 },
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};
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errno = 0;
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val = strtoul(baud, &ptr, 10);
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if (errno || ptr == baud)
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return B0;
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for (i = 0; i < sizeof(v2s) / sizeof(v2s[0]); i++) {
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if (v2s[i].val == val)
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return v2s[i].speed;
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}
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return B0;
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}
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void stty(int fd, speed_t speed)
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{
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struct termios term;
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tcdrain(fd);
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if (tcgetattr(fd, &term))
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return;
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if (speed != B0) {
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cfsetispeed(&term, speed);
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cfsetospeed(&term, speed);
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tcsetattr(fd, TCSAFLUSH, &term);
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}
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tcflush(fd, TCIOFLUSH);
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/* Disable modem specific flags */
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term.c_cflag &= ~(0|CSTOPB|PARENB|PARODD);
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term.c_cflag &= ~CRTSCTS;
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term.c_cflag |= CLOCAL;
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/* Timeouts, minimum chars and default flags */
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term.c_cc[VTIME] = 0;
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term.c_cc[VMIN] = 1;
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term.c_iflag = ICRNL|IXON|IXOFF;
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term.c_oflag = OPOST|ONLCR;
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term.c_cflag |= CS8|CREAD|HUPCL|CBAUDEX;
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term.c_lflag |= ICANON|ISIG|ECHO|ECHOE|ECHOK|ECHOKE;
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/* Reset special characters to defaults */
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term.c_cc[VINTR] = CTRL('C');
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term.c_cc[VQUIT] = CTRL('\\');
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term.c_cc[VEOF] = CTRL('D');
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term.c_cc[VEOL] = '\n';
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term.c_cc[VKILL] = CTRL('U');
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term.c_cc[VERASE] = CERASE;
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tcsetattr(fd, TCSANOW, &term);
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}
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/**
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* Local Variables:
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* indent-tabs-mode: t
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* c-file-style: "linux"
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* End:
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*/
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