//! The syscall tier where it cannot be: it is built from Linux's user
//! namespaces, Landlock, seccomp and cgroups, so a runner elsewhere (a
//! Windows runner, oxygenflow#83) never offers it, and these say why.

use crate::home::Home;
use crate::microvm::{Outcome, Sink};
use anyhow::{bail, Result};
use flow_core::api::SecretInput;
use flow_core::{Job, Sandbox};
use std::path::Path;
use std::time::Duration;

pub use crate::tier::disk_dir;
pub(crate) use crate::tier::{lines, self_hash, FAILED};

const WHY: &str = "the syscall tier runs only on Linux";

pub fn available() -> std::result::Result<(), String> {
    Err(WHY.into())
}

pub fn probe_main() -> i32 {
    eprintln!("{WHY}");
    1
}

pub fn sandbox_main(_spec_path: &Path) -> i32 {
    eprintln!("{WHY}");
    125
}

#[allow(clippy::too_many_arguments)]
pub fn run(
    _home: &Home,
    _sandbox: &Sandbox,
    _job: &Job,
    _secrets: &[SecretInput],
    _workspace: &Path,
    _scratch: &Path,
    _timeout: Duration,
    _sink: &mut dyn Sink,
    _name: &str,
) -> Result<Outcome> {
    bail!("{WHY}")
}