Is this shipping in Android S?
What is Android S? I see no reference to this version of android anywhere
It's what Android 12, the forthcoming version, would have been called if they'd kept the letter-based codenames.
Android's new Bluetooth stack rewrite (Gabeldorsh) is written with Rust
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Re: Android's new Bluetooth stack rewrite (Gabeldorsh) is written with Rust
#22It seems like Rust is really catching on.
To be honest, I didn't pay much attention to it for a while -- it felt like it might have simply been that day's "flavor of the day", destined to sink once then next flavor became popular.
Now, there's a real problem to be solved. But I thought a simpler approach would be needed (e.g., Zig or something like it). I guess that may still happen, but seems more and more like Rust is here to stay.
Re: Android's new Bluetooth stack rewrite (Gabeldorsh) is written with Rust
#23Since Android is Linux, will this become available to all Linux users?
Re: Android's new Bluetooth stack rewrite (Gabeldorsh) is written with Rust
#24Wait , so can rust generally be replace C++ code in most projects ? Has anyone here had success with a partial to Rust migration.
It is very hard to answer such a general question with a definitive answer, but Rust does want to be viable for the same sorts of things in which C++ is viable. As always, your mileage may vary.
Re: Android's new Bluetooth stack rewrite (Gabeldorsh) is written with Rust
#25It seems like Rust is really catching on. To be honest, I didn't pay much attention to it for a while -- it felt like it might have simply been that day's "flavor of the day", destined to sink once then next flavor became popular. Now, there's a real problem to be solved. But I thought a simpler approach would be needed (e.g., Zig or something like it). I guess that may still happen, but seems more and more like Rust…
Zig isn’t quite production ready.
Re: Android's new Bluetooth stack rewrite (Gabeldorsh) is written with Rust
#26I know the guy that heads up the team that did this work -- he and I spent 2+ years fighting Broadcom's old, god-awful bluetooth code. Our whole team used to play what-if games about replacing the thing while massive code dumps came in from vendors, making the task ever larger. Zach, if you're reading this, HUGE kudos to holding the line in replacing that, and double kudos for doing it in a verifiable, sane language!
> fighting Broadcom's old, god-awful bluetooth code Correction: god-awful host side bluetooth code. There is still the bluetooth firmware residing on the BCMxxx chip (or Qualcomm chip) - >1MB of god-awfulerer closed-source code, half of it is in ROM (with limited number of available patch slots), full of bugs. You can see it crash from time to time in the kernel debug logs (and auto-restart itself)
For more illustrations of bugs/vulns in the firmware: https://www.youtube.com/watch?v=7tIQjPjjJQc&t=1986s
Re: Android's new Bluetooth stack rewrite (Gabeldorsh) is written with Rust
#27If you go into the parent directory, what appears to be the main Gabeldorsh directory, most of the implementation appears to be written in C++. Is the project being slowly rewritten in Rust? Or are only parts of it written in Rust?
Re: Android's new Bluetooth stack rewrite (Gabeldorsh) is written with Rust
#28I know the guy that heads up the team that did this work -- he and I spent 2+ years fighting Broadcom's old, god-awful bluetooth code. Our whole team used to play what-if games about replacing the thing while massive code dumps came in from vendors, making the task ever larger. Zach, if you're reading this, HUGE kudos to holding the line in replacing that, and double kudos for doing it in a verifiable, sane language!
Any insight into why Apple seems to have a much better bluetooth stack? I do a lot of BLE development that has to work cross platform, and we see constant GATT connection issues on android compared to almost none on ios.
Re: Android's new Bluetooth stack rewrite (Gabeldorsh) is written with Rust
#29Is this shipping in Android S?
It's shipped in Android 11, but in disabled state.
On Pixel, developer options, bluetooth, enable "Gabeldorsh" if you want to live on the bleeding edge.
Re: Android's new Bluetooth stack rewrite (Gabeldorsh) is written with Rust
#30The Android IPC driver (binder) is also being re-written in rust. It takes advantage of the upcoming kernel driver rust support in Linux. It is an obvious choice for a memory safe re-write since all android processes (including sandboxed ones) have access to binder
This is a big f'n deal for Android, IMHO