[Feature Request] inject into non-Zygote processes (ptrace should be mostly able to?) , maybe leverage that to support secure app spawning in GrapheneOS (currently semi-bug on Grapphene?)

[LindaFerum]

Is your feature request related to a problem?/你的请求是否与某个问题相关？

As far as my attempts to hide root from a root detection apps go, as long as secure app spawning is ON in GrapheneOS NeoZygisk does not seem to succeed (which is a known "quirk" of Graphene Zygisks PerformanC/ReZygisk#239 )

Also non-zygote processes currently can't be meddled with (but in principle ptrace should be able to inject into many of them)

Describe the solution you'd like/描述你想要的解决方案

As far as I understand, it should be theoretically possible for ptrace-based approach to inject into other processes as well, perhaps even into (and especially into :-) ) GrapheneOS securely-spawned processes

Additional context/其他信息

No response

[JingMatrix]

Why would you comment that GrapheneOS support is semi-bug ? Are you users of GrapheneOS ?

[HSSkyBoy]

According to friends who are using GrapheneOS, NeoZygisk works well on GrapheneOS. I haven't encountered any bugs. Do you really have any actual test results? The situation with ReZygisk is different from NeoZygisk. Moreover, ReZygisk has poor compatibility anyway.

[LindaFerum]

Hi @JingMatrix
I didn't want to imply it is semi-bug, more like a feature request

So far, at least in my testing, as long as "secure app spawning" in GrapheneOS is activated, NeoZygisk (and as far as I can tell all other types of alternate Zygisks) don't quite succeed in altering the behavior of apps (tested on root / magisk detect apps) which upon googling I have come to suspect is due to secure app spawning changing the app spawning in such a way that the apps are not forked from zygote and thus the injection does not carry over to them.

As far as I understand (and please pardon me if I'm wrong) the method of NeoZygisk (ptrace-based ) is not fundamentally limited to injecting into zygote and (theoretically) almost any process can be injected (except maybe for some processes covered by Graphene's anti-debug and anti-memory-alteration features which would prevent injection into some system components, but that's a separate kettle of fish)

Hence what I am suggesting, is a feature that would allow to inject to non-zygote-forked processes