v4l2_querymenu(9)

📦 version 7.3.1, in nixpkgs unstable

💅 v4l2_querymenu 💅

okay so bestie, welcome to the Kernel API Manual ✨ — this little cutie is v4l2_querymenu(9), and we're gonna get you fully caught up, no cap 🫶

🌸 NAME 🌸

v4l2_querymenu — a lil helper function bestie, here to help you implement the VIDIOC_QUERYMENU ioctl (the docs call it :ref:VIDIOC_QUERYMENU <vidioc_queryctrl>`` — that's the literal ref string, don't come for me 💀)

✨ SYNOPSIS ✨

int v4l2_querymenu (struct v4l2_ctrl_handler *hdl , struct
v4l2_querymenu *qm );

🎀 ARGUMENTS 🎀

  • hdl — a pointer to struct v4l2_ctrl_handler. literally just a pointer, she's not complicated 💖
  • qm — a pointer to struct v4l2_querymenu. also just a pointer. iconic of her ngl ⭐

🦋 DESCRIPTION 🦋

So here's the whole vibe check: if hdl == NULL then they will all return -EINVAL. that's it. that's the tea ☕ — pass a NULL handler and everything just bounces back with -EINVAL, no notes 💀

🔥 SEE ALSO 🔥

okay this list is long long, but every single one of these deserves her moment, so let's go 👑

Kernel file ./include/media/v4l2-ctrls.h — and union v4l2_ctrl_ptr(9):

like I said. a LOT 🫶 go read them, they're all serving 💅

ngl this page is short but she's still mother 👑 handle your hdl, don't pass NULL, and you're golden ✨

mwah 💋 this has been v4l2_querymenu(9) — straight out of ./include/media, dated October 2026, sitting pretty under the Kernel API Manual umbrella 🎀 bye bestie, go slay some ioctls 🦋💖

📦 where this page comes from