stand/kboot/termios.c

   1 /*
   2  * Copyright (c) 2005-2020 Rich Felker, et al.
   3  *
   4  * SPDX-License-Identifier: MIT
   5  *
   6  * Note: From the musl project, stripped down and repackaged with HOST_/host_ prepended
   7  */
   8
   9 #include <sys/types.h>
  10 #include "termios.h"
  11 #include "host_syscall.h"
  12
  13 int
  14 host_tcgetattr(int fd, struct host_termios *tio)
  15 {
  16         if (host_ioctl(fd, HOST_TCGETS, (uintptr_t)tio))
  17                 return -1;
  18         return 0;
  19 }
  20
  21 int
  22 host_tcsetattr(int fd, int act, const struct host_termios *tio)
  23 {
  24         if (act < 0 || act > 2) {
  25 //              errno = EINVAL; /* XXX ?? */
  26                 return -1;
  27         }
  28         return host_ioctl(fd, HOST_TCSETS+act, (uintptr_t)tio);
  29 }
  30
  31 void
  32 host_cfmakeraw(struct host_termios *t)
  33 {
  34         t->c_iflag &= ~(HOST_IGNBRK | HOST_BRKINT | HOST_PARMRK | HOST_ISTRIP |
  35             HOST_INLCR | HOST_IGNCR | HOST_ICRNL | HOST_IXON);
  36         t->c_oflag &= ~HOST_OPOST;
  37         t->c_lflag &= ~(HOST_ECHO | HOST_ECHONL | HOST_ICANON | HOST_ISIG |
  38             HOST_IEXTEN);
  39         t->c_cflag &= ~(HOST_CSIZE | HOST_PARENB);
  40         t->c_cflag |= HOST_CS8;
  41         t->c_cc[HOST_VMIN] = 1;
  42         t->c_cc[HOST_VTIME] = 0;
  43 }
  44
  45 int host_cfsetospeed(struct host_termios *tio, host_speed_t speed)
  46 {
  47         if (speed & ~HOST_CBAUD) {
  48 //              errno = EINVAL; /* XXX ? */
  49                 return -1;
  50         }
  51         tio->c_cflag &= ~HOST_CBAUD;
  52         tio->c_cflag |= speed;
  53         return 0;
  54 }
  55
  56 int host_cfsetispeed(struct host_termios *tio, host_speed_t speed)
  57 {
  58         return speed ? host_cfsetospeed(tio, speed) : 0;
  59 }
  60
  61 int
  62 host_cfsetspeed(struct host_termios *tio, host_speed_t speed)
  63 {
  64         return host_cfsetospeed(tio, speed);    /* weak alias in musl */
  65 }
  66