NAME
tcflush - discard pending data
LIBRARY
Standard C library (libc, -lc)
SYNOPSIS
#include <termios.h>
int tcflush(int fd, int queue_selector);
DESCRIPTION
tcflush() discards data written to the object referred to by fd but not transmitted, or data received but not read, depending on the value of queue_selector:
- TCIFLUSH
-
flushes data received but not read.
- TCOFLUSH
-
flushes data written but not transmitted.
- TCIOFLUSH
-
flushes both data received but not read, and data written but not transmitted.
RETURN VALUE
- 0
-
on success.
- -1
-
on failure and set errno to indicate the error.
ATTRIBUTES
For an explanation of the terms used in this section, see attributes(7).
| Interface | Attribute | Value |
| tcflush() | Thread safety | MT-Safe |
STANDARDS
POSIX.1-2008.
HISTORY
POSIX.1-2001.