---
name: "io_eagain"
section: "3"
platform: "linux"
package: "libowfat-dev"
version: "0.32-5"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/io_eagain"
---

# io\_eagain(3)

tell io\_wait that you got an EAGAIN

## NAME

io\_eagain - tell io\_wait that you got an EAGAIN

## SYNTAX

**#include \<libowfat/io.h\>**

void **io\_eagain**(int64 fd);

## DESCRIPTION

If io\_wait() said that you can read from a descriptor, you try to read from it, and you get EAGAIN, you need to tell io\_wait().  This is important for edge triggered event notification schemes like Linux 2.4's SIGIO, or you will lose events.

io\_tryread(), io\_trywrite() and io\_sendfile() and iob\_send() already take care of this for you.

This function is only of interest if you integrate io\_wait() with legacy code that uses read/write directly.

## SEE ALSO

[io\_wait(3)](/io_wait/3.md)