io_set_callback(3)

io_set_callback3

Set up io completion callback function

Usage

#include <errno.h>

#include <libaio.h>

static inline void io_set_callback(struct iocb *iocb, io_callback_t cb);

struct iocb {
	void		*data;
	unsigned	key;
	short		aio_lio_opcode;
	short		aio_reqprio;
	int		aio_fildes;
};

typedef void (*io_callback_t)(io_context_t ctx, struct iocb *iocb, long res, long res2);

Overview

The callback is not done if the caller uses raw events from io_getevents(3), only with the library helpers.

Return values

None.

Errors

None.

Releases

11 releases since Debian 4.0 (Etch); the text changed 4 times.

  1. 4.0–5.0
  2. 6.0–8
  3. 9
  4. 10
  5. 11–Arch

From libaio 0.3.113-5 in Arch Linux 2026-11-01. Parsed by carta from the page's man source.