NAME
tcflow - suspect transmission or reception of data
LIBRARY
Standard C library (libc, -lc)
SYNOPSIS
#include <termios.h>
int tcflow(int fd, int action);
DESCRIPTION
tcflow() suspends transmission or reception of data on the object referred to by fd, depending on the value of action:
- TCOOFF
-
suspends output.
- TCOON
-
restarts suspended output.
- TCIOFF
-
transmits a STOP character, which stops the terminal device from transmitting data to the system.
- TCION
-
transmits a START character, which starts the terminal device transmitting data to the system.
The default on open of a terminal file is that neither its input nor its output is suspended.
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 |
| tcflow() | Thread safety | MT-Safe |
STANDARDS
POSIX.1-2008.
HISTORY
POSIX.1-2001.