drm_ioctl_flags(9)

💅 NAME 💅

drm_ioctl_flags — bestie, this one checks for a core ioctl and hands back the ioctl permission flags ✨ (and yes, it's from the Kernel API Manual, we're in the kernel docs now 🫶)

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🌸 SYNOPSIS 🌸

bool drm_ioctl_flags (unsigned int nr , unsigned int *flags );

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🎀 ARGUMENTS 🎀

• nr — the ioctl number, literally the number you're checking 👀
• flags — the spot where the ioctl permission flags get returned, so this is your output destination bestie 💖

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🦋 DESCRIPTION 🦋

Okay so here's the tea: this ioctl is only used by the vmwgfx driver to augment the access checks done by the DRM core — and insofar it's a pretty decent layering violation 😭💀. It shouldn't be used by any drivers. Like, at all. Not you, not your driver, not your friend's driver. Periodt. 🙈

Ngl this is giving "we know this is questionable but it's here" energy. Do not copy this behavior into your own code, fr fr.

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✨ RETURN ✨

It returns True if nr corresponds to a DRM core ioctl number, and false otherwise. Slay 💅

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🌈 SEE ALSO 🌈

• Kernel file ./drivers/gpu/drm/drm_ioctl.c — the getunique and setversion story(9) 👑
• drm_noop(9)
• drm_invalid_op(9)
• driver specific ioctls(9)
• drm_ioctl(9)

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That's the whole vibe, bestie — brought to you from ./drivers/gpu/drm, dated October 2026. Go forth and maybe don't use this in your driver, mwah 💜🎀🦋