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|
use std::{fs::DirBuilder, io, process};
use nix::{
mount::{self, MsFlags},
sched::{self, CloneFlags},
};
use serde::{Deserialize, Serialize};
use crate::{types::*, util::ToIOResult};
#[derive(Debug, Deserialize, Serialize)]
pub enum Error {
Code(i32),
String(String),
}
impl From<io::Error> for Error {
fn from(error: io::Error) -> Self {
match error.raw_os_error() {
Some(code) => Error::Code(code),
None => Error::String(error.to_string()),
}
}
}
impl From<Error> for io::Error {
fn from(error: Error) -> Self {
match error {
Error::Code(code) => io::Error::from_raw_os_error(code),
Error::String(string) => io::Error::new(io::ErrorKind::Other, string),
}
}
}
fn init_task() -> Result<(), Error> {
sched::unshare(CloneFlags::CLONE_NEWNS).to_io_result()?;
mount::mount::<_, _, _, str>(
Some("runc"),
"build/tmp/runc",
Some("tmpfs"),
MsFlags::empty(),
None,
)
.to_io_result()?;
DirBuilder::new().create("build/tmp/runc/rootfs")?;
mount::mount::<_, _, str, str>(
Some("build/tmp/rootfs"),
"build/tmp/runc/rootfs",
None,
MsFlags::MS_BIND,
None,
)
.to_io_result()?;
mount::mount::<str, _, str, str>(
None,
"build/tmp/runc/rootfs",
None,
MsFlags::MS_BIND | MsFlags::MS_REMOUNT | MsFlags::MS_RDONLY,
None,
)
.to_io_result()?;
Ok(())
}
pub fn handle_task(task: TaskRef, task_def: Task) -> Result<(), Error> {
init_task()?;
let output = process::Command::new("sh")
.arg("-c")
.arg(task_def.run)
.current_dir("build/tmp/runc/rootfs")
.output()?;
if output.status.success() {
println!(
"{}:\n{}",
task,
String::from_utf8_lossy(output.stdout.as_slice()),
);
} else {
println!("{}:\n\t{:?}", task, output);
}
Ok(())
}
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