drm_is_primary_client(9)

✨ drm_is_primary_client — bestie, is this file of the primary node?? 👑

okay so real quick before we go anywhere: this page lives in the Kernel API Manual, and the star of the show is drm_is_primary_client. yes she's a kernel function, yes she's important, and yes I'm gonna walk you through her 💅

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🌸 NAME 🌸

drm_is_primary_client — is this an open file of the primary node

like, literally, that's the whole gig. she checks a file and tells you if it's giving primary node energy or not 🫶

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🦋 SYNOPSIS 🦋

bool drm_is_primary_client (const struct drm_file *file_priv );

she takes one thing, she gives you back a bool. that's it. simple queen behavior 👑

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🎀 ARGUMENTS 🎀

• file_priv — the DRM file. that's it, that's the whole argument list. pls hand her a DRM file and she'll do her little vibe check ✨

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💖 DESCRIPTION 💖

okay so here's the tea 🍓 — she returns true if this is an open file of the primary node, i.e. drm_file.minor of file_priv is a primary minor.

that's the whole check. no cap. if the minor is a primary minor, you get true; otherwise you don't. iconic, lowkey.

also!! there's a whole section about primary nodes and authentication — go read :ref:section on primary nodes and authentication <drm_primary_node>`` if you wanna go deeper. iykyk 📚

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🌈 SEE ALSO 🌈

your girl doesn't exist in a vacuum, bestie — go check out:

• Kernel file ./include/drm/drm_file.h
• struct drm_minor(9)
• struct drm_pending_event(9)
• struct drm_file(9)
• drm_is_render_client(9)
• drm_is_accel_client(9)
• struct drm_memory_stats(9)

the whole friend group fr fr 🫶💜

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💀 reminder: this is a kernel API page, so like, don't go inventing behaviors that aren't listed above. she tells you exactly what she tells you. periodt.

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and that's the page!! this one comes from ./include/drm, dated October 2026, and it's filed under drm_is_primary_client(9). mwah, go slay your DRM checks 💅🎀✨