Obtaining superuser privileges from within the Nix environment about nix-on-droid

[deliciouslytyped]

I'm just doing some sanity checks here; is there any theoretical reason you couldn't have a sudo in android? Googling android sudo seems to yield results, and I don't see why it would necessarily need to be part of the nix distribution, as long as you can run executables with it?

With SELinux, does root still get to do everything, or are there restrictions?

The ability to do this at all depends on being on a "rooted" device, right? but from there...?

Some additional googling yields https://gitlab.com/st42/termux-sudo which seems to be the thing references everywhere (I haven't seen any references to binaries yet), though that's just a wrapper around su. (heh https://gist.github.com/GabrielMMelo/0e146f32d73978bf0d0a06786bcbc96c)

or is this a nix problem?

[Atemu]

I tried getting Magisk to work in nix-on-droid today and I could sucessfully execute the magisk binary after I passed through /system/bin/linker64 but it's unable to conntect to the magiskd.

read (4 != -1) failed with 104: Connection reset by peer

Strace:

socket(AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC, 0) = 3
connect(3, {sa_family=AF_UNIX, sun_path=@"CGx7Fvq1Eis1ayv0ScTyWRB3N7MwMYU3"}, 35) = 0
write(3, "\2\0\0\0", 4)                 = -1 EPIPE (Broken pipe)

I feel like this is a proot issue.

[t184256]

/system/bin/linker64

TIL. Thanks!

connect(3, {sa_family=AF_UNIX, sun_path=@"CGx7Fvq1Eis1ayv0ScTyWRB3N7MwMYU3"}, 35) = 0
write(3, "\2\0\0\0", 4) = -1 EPIPE (Broken pipe)

I feel like this is a proot issue.

Could be. I don't know whether it supports abstract sockets.