bd8434f4f4
Hi @tiann. Thanks for the great project, I had great fun playing around with it. This PR mainly tries to further minimize the possible delays caused by KernelSU hooking. There are 3 major changes: - Processes with 0 < UID < 2000 are blocked straight-up before going through the allow_list. I don't see any need for such processes to be interested in root, and this allows returning early before going through a more expensive lookup. If there's an expected breakage due to this change, I'll remove it. Let me know. - A page-sized (4K) bitmap is added. This allows O(1) lookup for UID <= 32767. This speeds up `ksu_is_allow_uid()` by about 4.8x by sacrificing a 4K memory. IMHO, a good trade-off. Most notably, this reduces the 99.999% result previously from worrying milliseconds scale to microseconds scale. For UID > 32767, another page-sized (4K) sequential array is used to cache allow_list. Compared to the previous PR #557, this new approach gives another nice 25% performance boost in average, 63-96% boost in worst cases. Benchmark results are available at https://docs.google.com/spreadsheets/d/1w_tO1zRLPNMFRer49pL1TQfL6ndEhilRrDU1XFIcWXY/edit?usp=sharing Thanks! --------- Signed-off-by: Juhyung Park <qkrwngud825@gmail.com>
English | 简体中文 | 繁體中文 | 日本語 | Portuguese-Brazil | Türkçe
KernelSU
A Kernel based root solution for Android devices.
Features
- Kernel-based
suand root access management. - Module system based on overlayfs.
Compatibility State
KernelSU officially supports Android GKI 2.0 devices(with kernel 5.10+), old kernels(4.14+) is also compatible, but you need to build kernel yourself.
WSA and containter-based Android should also work with KernelSU integrated.
And the current supported ABIs are : arm64-v8a and x86_64
Usage
Build
Discussion
- Telegram: @KernelSU
License
Credits
- kernel-assisted-superuser: the KernelSU idea.
- genuine: apk v2 signature validation.
- Diamorphine: some rootkit skills.
- Magisk: the sepolicy implementation.