KernelSU-Next/userspace/ksuinit/src/main.rs

#![no_main]

mod init;
mod loader;

use rustix::{cstr, runtime::execve};
/// # Safety
/// This is the entry point of the program
/// We cannot use the main because rust will abort if we don't have std{in/out/err}
/// https://github.com/rust-lang/rust/blob/3071aefdb2821439e2e6f592f41a4d28e40c1e79/library/std/src/sys/unix/mod.rs#L80
/// So we use the C main function and call rust code from there
#[no_mangle]
pub unsafe extern "C" fn main(_argc: i32, argv: *const *const u8, envp: *const *const u8) -> i32 {
    let _ = init::init();
    unsafe {
        execve(cstr!("/init"), argv, envp);
    }
    0
}