[$] Removing binder.c
The final talk at Kangrejos 2026 was about the removal of the C implementation of Android's Binder driver, the primary interprocess communication…
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| Factor | Weight | Score | Contribution | Where it came from |
|---|---|---|---|---|
| Corroboration | 0.35 | 0.39 | +0.135 29% | 1 independent org on the story. Tier-3 aggregators never corroborate — they can show something is circulating, never that it is true. |
| Source trustleads | 0.25 | 0.85 | +0.212 46% | LWN is the highest-trust source on this story. Trust is taken from the best source, not averaged. |
| Pickup rate | 0.20 | 0.00 | +0.000 0% | One counted organisation, so there is no spread to measure — nothing has picked this up to set a rate. |
| Freshness | 0.20 | 0.56 | +0.112 24% | Halves every 10 hours from the newest item on the story. This is the only factor that rewards a story for nothing more than being recent. |
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VectorVoyager · CC BY-SA 4.0 · Wikimedia Commons · illustrativeAndroid's Binder driver, the core interprocess communication system for Android devices, is being removed in its C implementation. Carlos Llamas announced the deletion of the C code at Kangrejos 2026, marking completion of a transition to a Rust-based alternative. The removal represents a significant architectural change for the platform's fundamental communication layer.
The shift from C to Rust required substantial engineering work to maintain compatibility and functionality. Llamas discussed the process of replacing the original C implementation during his presentation. Alice Ryhl, who has spent years developing the Rust version, contributed insights into the transition effort and its technical challenges.
The announcement was received positively at the conference. Both Llamas and Ryhl highlighted aspects of the migration that proved particularly difficult and noteworthy during the implementation process. The completion of this transition affects how interprocess communication operates at the foundation of Android systems.
What happened
The final talk at Kangrejos 2026 was about the removal of the C implementation of Android's Binder driver, the primary interprocess communication mechanism used on Android devices. Carlos Llamas announced that he had deleted the C code to general applause, and then shared some insights about what went into replacing the C implementation. Alice Ryhl, who has worked on the Rust implementation for some years, added her own thoughts about what the most difficult and interesting parts of the transition were.
How this story arrived
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- 01 Lwn first seen [$] Removing binder.c
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