| TCSENDBREAK(3) | Library Functions Manual | TCSENDBREAK(3) | 
tcsendbreak, tcdrain,
  tcflush, tcflow —
#include <termios.h>
int
  
  tcdrain(int
    fd);
int
  
  tcflow(int
    fd, int
  action);
int
  
  tcflush(int
    fd, int
  action);
int
  
  tcsendbreak(int
    fd, int len);
tcdrain function waits until all output written to
  the terminal referenced by fd has been transmitted to
  the terminal.
The tcflow function suspends transmission
    of data to or the reception of data from the terminal referenced by
    fd depending on the value of
    action. The value of action must
    be one of the following:
Input Modes’ section of
      termios(4)).Input Modes’ section of
      termios(4)).The tcflush function discards any data
    written to the terminal referenced by fd which has not
    been transmitted to the terminal, or any data received from the terminal but
    not yet read, depending on the value of action. The
    value of action must be one of the following:
The tcsendbreak function transmits a
    continuous stream of zero-valued bits for four-tenths of a second to the
    terminal referenced by fd. The
    len parameter is ignored in this implementation.
tcsendbreak, tcdrain,
  tcflush and tcflow functions
  are expected to be compliant with the IEEE Std 1003.1-1988
  (“POSIX.1”) specification.
| June 4, 1993 | NetBSD 10.0 |