---
name: "TCXONC"
section: "2const"
platform: "linux"
package: "man-pages"
version: "6.19-1"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/TCXONC"
---

# TCXONC(2const)

software flow control

## NAME

TCXONC - software flow control

## LIBRARY

Standard C library (*libc*, *-lc*)

## SYNOPSIS

```
#include <asm/termbits.h>  /* Definition of TCXONC */
#include <sys/ioctl.h>
```

**int ioctl(int** *fd***, TCXONC, int** *arg***);**

## DESCRIPTION

Equivalent to *tcflow(fd, arg)*.

See [**tcflow**(3)](/tcflow/3.md) for the argument values **TCOOFF**, **TCOON**, **TCIOFF**, **TCION**.

## RETURN VALUE

On success, 0 is returned. On error, -1 is returned, and *errno* is set to indicate the error.

## SEE ALSO

[**ioctl**(2)](/ioctl/2.md), [**ioctl\_tty**(2)](/ioctl_tty/2.md), [**tcflow**(3)](/tcflow/3.md), [**termios**(7)](/termios/7.md)