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https://github.com/fubarnetes/libjail-rs

Rust implementation of a FreeBSD jail library
https://github.com/fubarnetes/libjail-rs

freebsd freebsd-jail-manager freebsd-jails jails rust rust-library

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Rust implementation of a FreeBSD jail library

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# libjail-rs

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libjail-rs aims to be a rust implementation of the FreeBSD [jail(3)](https://www.freebsd.org/cgi/man.cgi?query=jail&sektion=3&manpath=FreeBSD+11.1-stable) library. While feature parity is a goal, a one-to-one implementation of all functions in [jail(3)](https://www.freebsd.org/cgi/man.cgi?query=jail&sektion=3&manpath=FreeBSD+11.1-stable) is not.

# Is it any good?
[Yes.](https://news.ycombinator.com/item?id=3067434)

# Can I use it?

This library is still under heavy development, but seems to work so far.
No stability guarantees are made.

# How do I use it?

```
jail = "*"
```

Execute a command in a jail:
```rust
use jail::process::Jailed;
use jail::StoppedJail;
use std::process::Command;

fn main() {
let stopped = StoppedJail::new("/path/to/root")
.name("alcatraz")
.ip("127.0.1.2".parse().unwrap())
.ip("fe80::2".parse().unwrap * ())
.param("allow.raw_sockets", param::Value::Int(1));

let running = stopped.start().expect("Couldn't start Jail");

let output = Command::new("hostname")
.jail(&running)
.output()
.expect("Failed to execute command");

println!("output: {:?}", output.stdout);

running.kill();
}
```

# Is it fast?

There are a few benchmarks included. Run them with `sudo cargo bench` (yes,
starting a jail requires being `root`).

These are some results on my laptop, on slow, spinning disks:

```
test echo_helloworld_free ... bench: 271,418 ns/iter (+/- 17,522)
test echo_helloworld_jailed ... bench: 461,749 ns/iter (+/- 26,267)
test get_ips ... bench: 29,591 ns/iter (+/- 3,315)
test start_echo_helloworld_stop ... bench: 504,978 ns/iter (+/- 23,717)
test start_stop_ipjail ... bench: 27,220 ns/iter (+/- 2,141)
test start_stop_ipv4jail ... bench: 26,307 ns/iter (+/- 2,159)
test start_stop_ipv6jail ... bench: 26,988 ns/iter (+/- 2,486)
test start_stop_jail ... bench: 25,760 ns/iter (+/- 2,244)
```

## License
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