//! 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; Haiku and FreeBSD, #91, #99) 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}")

}