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/* libc/sys/linux/termios.c - Terminal control */

/* Written 2000 by Werner Almesberger */

#include <errno.h>

#include <sys/types.h>

#include <sys/termios.h>

#include <sys/ioctl.h>

int

tcgetattr(int fd,struct termios *termios_p)

{

  return ioctl(fd,TCGETS,termios_p);

}

int

tcsetattr(int fd,int optional_actions,const struct termios *termios_p)

{

  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,termios_p);

}

#if !defined(_ELIX_LEVEL) || _ELIX_LEVEL >= 4

pid_t

tcgetpgrp(int fd)

{

  int p;

  if (ioctl(fd,TIOCGPGRP,&p) < 0)

    return (pid_t)-1;

  return (pid_t)p;

}

int

tcsetpgrp(int fd, pid_t pid)

{

  int p = (int)pid;

  return ioctl(fd,TIOCSPGRP,&p);

}

#endif /* !_ELIX_LEVEL || _ELIX_LEVEL >= 4 */

int

tcflow (int fd, int action)

{

  return ioctl (fd, TCXONC, action);

}

int

tcflush (int fd, int queue_selector)

{

  return ioctl (fd, TCFLSH, queue_selector);

}