iio_dma_buffer_write(9)

📦 version 7.3.1, in nixpkgs unstable

💅 iio_dma_buffer_write — the DMA buffer write callback, bestie ✨

Okay so we're in the iio_dma_buffer_write(9) girlies today — this is a page from the Kernel API Manual, and it's short but iconic. Sit down, grab a strawberry 🍓, let's get into it.

🌸 NAME 🌸

iio_dma_buffer_write — the DMA buffer write callback. That's the whole vibe. 🎀

✨ SYNOPSIS ✨

int iio_dma_buffer_write (struct iio_buffer *buffer , size_t n , const
       char __user *user_buffer );

Three args, one int back, no cap. 🫶

👑 ARGUMENTS 👑

  • buffer — the buffer you're writing to. The main character, honestly. ✨
  • n — the number of bytes to read. Yes, it says read — that's literally the wording on this page, iykyk, we don't edit the lore. 👀
  • user_buffer — the userspace buffer you're copying the data from. So the data comes out of here and goes in over there. 💫

🌈 DESCRIPTION 🌈

Lowkey the whole job of this function is: be the write callback for the iio_buffer_access_ops struct, but specifically for DMA buffers. That's it, that's the assignment. Show up, be the callback, slay. 💅

No extra deets here, bestie — the page is a short one and we're not out here inventing behaviour. 🙈

🦋 SEE ALSO 🦋

First up, the kernel file it lives in, fr fr:

  • Kernel file ./drivers/iio/buffer/industrialio-buffer-dma.c

And the whole friend group of related functions — they all show up together, periodt:

Okayyy that's the page! 🧚‍♀️ It ships out of ./drivers/iio/buffer and the date on it is October 2026 — so yes, this manpage is time-travelling from the future, ngl, we love a mysterious icon 🔥. Go be somebody's write callback. Mwah. 💖🎀

📦 where this page comes from