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use nix::{
sys::{
ptrace,
signal::Signal,
wait::{waitpid, WaitStatus},
},
unistd::Pid,
};
use std::{os::unix::process::CommandExt, process::Command};
pub fn exec(command: &mut Command) -> anyhow::Result<Pid> {
unsafe {
command.pre_exec(|| ptrace::traceme().map_err(|e| e.into()));
}
let child = command.spawn()?;
Ok(Pid::from_raw(child.id() as i32))
}
pub fn trace(pid: Pid) -> anyhow::Result<()> {
let mut have_to_print = true;
loop {
have_to_print ^= true;
ptrace::syscall(pid, None)?;
let status = waitpid(pid, None)?;
match status {
WaitStatus::Exited(_pid, _) => {
break;
}
WaitStatus::Stopped(pid, signal) => {
match signal {
Signal::SIGTRAP => {
let regs = ptrace::getregs(pid)?;
if have_to_print {
println!(
"{}({:x}, {:x}, {:x}, ...) = {:x}",
regs.orig_rax, regs.rdi, regs.rsi, regs.rdx, regs.rax,
);
}
}
_ => {}
};
}
_ => {}
};
}
Ok(())
}
|
