aiocb(3type)

💖 aiocb(3type) — bestie, it's the async I/O control block ✨

okay so you're in the <aio.h> section 3type girlies and you found this lil struct called aiocb — that's asynchronous I/O control block for the uninitiated — and it's genuinely the blueprint for every async read/write you're gonna do. no cap, this is the whole personality of POSIX async I/O right here. let's get into it 🦋

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📚 LIBRARY

Standard C library (libc) — she's built in, you don't gotta install anything, periodt 💅

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✨ SYNOPSIS ✨

#include <aio.h>

struct aiocb {
    int             aio_fildes;     /* File descriptor */
    off_t           aio_offset;     /* File offset */
    volatile void  *aio_buf;        /* Location of buffer */
    size_t          aio_nbytes;     /* Length of transfer */
    int             aio_reqprio;    /* Request priority offset */
    struct sigevent aio_sigevent;   /* Signal number and value */
    int             aio_lio_opcode; /* Operation to be performed */
};

look at her. seven fields. every single one of them doing its little job. iconic behavior fr fr 👑

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🌸 DESCRIPTION

so if you want the actual tea about this structure — what it does, how it behaves, all the lore — go read aio(7). she's the main character page, this one is just the supporting cast introduction. iykyk 🫶

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📏 STANDARDS

POSIX.1-2024. that's her pedigree bestie, she's official ✨

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🕰️ HISTORY

she's been around since POSIX.1-1996 — a true vintage queen, older than most of the internet 💜

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👀 SEE ALSO

• aio_cancel(3)
• aio_error(3)
• aio_fsync(3)
• aio_read(3)
• aio_return(3)
• aio_suspend(3)
• aio_write(3)
• lio_listio(3)

all her besties, all linked, all worth a read 💖

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and that's the whole vibe ✨ this one's from Linux man-pages 6.20, dated 2026-02-08 — go off, read the struct, write some async I/O, slay 💅🎀