STRUCT DRM_PROPERTY_BLOB(9)

✨ struct drm_property_blob(9) ✨

okay so bestie, welcome to the Kernel API Manual — this one's about struct drm_property_blob, and it's honestly kind of a whole vibe. let's get into it 💅

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🎀 NAME 🎀

struct drm_property_blob — the blob data for &drm_property. that's it, that's the tweet 🐦

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🦋 SYNOPSIS 🦋

struct drm_property_blob {
    struct drm_mode_object base;
    struct drm_device *dev;
    struct list_head head_global;
    struct list_head head_file;
    size_t length;
    void *data;
 };

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🌸 Members 🌸

lowkey the most important part, so pay attention bestie 🫶

• base — the base KMS object. every icon needs a foundation, periodt ✨
• dev — the DRM device. literally the main character here 👑
• head_global — entry on the global blob list in drm_mode_config.property_blob_list. she's on the big list 💖
• head_file — entry on the per-file blob list in drm_file.blobs list. and she's also on the smaller, more exclusive list 🎀
• length — size of the blob in bytes, invariant over the lifetime of the object. so like, this number does not change, no cap, it's locked in for life 🔒
• data — the actual data, embedded at the end of this structure. the real payload, the whole point, the ~good stuff~ 🍓

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🌈 Description 🌈

okay so here's the tea ☕ — Blobs are used to store bigger values than what fits directly into the 64 bits available for a drm_property. 64 bits is cute but sometimes you need MORE, y'know? and that's where blobs come in, slay 💅

Blobs are reference counted using drm_property_blob_get and drm_property_blob_put. they know their worth and they keep track of it 💖 and they are created using drm_property_create_blob. that's the origin story, the creation myth, iconic ✨

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🌟 SEE ALSO 🌟

go check these out too, iykyk 👀

• Kernel file ./include/drm/drm_property.h
• struct drm_property_enum(9)
• struct drm_property(9)
• drm_property_type_is(9)
• drm_property_find(9)

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and that's the page bestie!! 🦋 this lil gem lives in ./include/drm, and the version stamp says October 2026 — so like, future vibes fr fr 😭✨ go forth and blob responsibly 💜🎀