vb2_reqbufs(9)

💅 vb2_reqbufs — like, the Kernel API Manual page, but make it make sense 🎀

okay so bestie, welcome to vb2_reqbufs(9) ✨ this is a kernel API manual page and it's honestly not that deep — it's a lil wrapper function, and I'm gonna walk you through it like we're texting at 2am 🦋

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✨ NAME ✨

vb2_reqbufs — it's the wrapper for vb2_core_reqbufs() that also verifies the memory and type values 💅 like it does the actual job and then double-checks your vibes, iconic behavior honestly 👑

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🌸 SYNOPSIS 🌸

int vb2_reqbufs (struct vb2_queue *q , struct v4l2_requestbuffers *req );

it returns an int, takes two pointers, and that's the whole mood fr fr 🫶

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🎀 ARGUMENTS 🎀

• q — pointer to struct vb2_queue with the videobuf2 queue. that's your queue bestie, she's the main character here 💖
• req — the struct v4l2_requestbuffers that gets passed from userspace to the v4l2_ioctl_ops->vidioc_reqbufs handler in your driver. so like, it travelled all the way from userspace just to be here, respect the journey 😭✨

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🔥 SEE ALSO 🔥

lowkey the whole friend group shows up here, no cap:

• Kernel file ./include/media/videobuf2-v4l2.h
• struct vb2_v4l2_buffer(9)
• vb2_find_buffer(9)
• vb2_querybuf(9)
• vb2_create_bufs(9)
• vb2_prepare_buf(9)
• vb2_qbuf(9)
• vb2_expbuf(9)
• vb2_dqbuf(9)
• vb2_streamon(9)
• vb2_streamoff(9)
• vb2_queue_init(9)
• vb2_queue_init_name(9)
• vb2_queue_release(9)
• vb2_queue_change_type(9)
• vb2_poll(9)
• vb2_queue_is_busy(9)
• vb2_video_unregister_device(9)

like, the entire videobuf2 squad in one list — iykyk 💀💜

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ngl there are no options, no exit statuses, no env vars, no warnings on this one — she's a short queen and that's literally the whole page 👑 don't go looking for more, there is no more 🙈

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and that's the page!! 🌈 love that for us. this lil gem lives in ./include/media and it's dated October 2026 ⭐ so if you're reading this in the future, hey bestie, hope the kernel's treating you well 🫶🍓 bye!! 💖🧚