tcflush

Syntax

#include <termios.h> int tcflush (int fd, int which);

Description

This function clears the input and/or output queues on for the device/file open on handle fd. The which argument can take these values:

TCIFLUSH

the unprocessed characters in the input buffer are discarded

TCOFLUSH

no effect (provided for compatibility)

TCIOFLUSH

has the combined effect of TCIFLUSH and TCOFLUSH

Note that the termios emulation handles console only.

Return Value

Zero on success, nonzero on failure.

Portability

ANSI/ISO C	No
POSIX	1003.2-1992; 1003.1-2001