Process isolation for Linux using namespaces, resource limits and seccomp. It works by creating a new, completely empty, mount namespace where the root is on a tmpfs that is invisible from the host, and will be automatically cleaned up when the last process exits. You can then use a policy configuration file or commandline options to construct the root filesystem and process environment and command to run in the namespace.
cargo install hakoniwa-cli.When use commandline, hakoniwa-run will load a default policy configuration named
[KISS-policy.toml] to ensure a minimal mount namespace created, use --policy-file
to use your custom version.
sh
$ hakoniwa run --verbose -- /bin/bash
[2022-08-21T09:14:11Z INFO hakoniwa::cli::run] Configuration: "KISS-policy.toml"
[2022-08-21T09:14:11Z INFO hakoniwa::executor] Mount point: host_path: "/tmp/hakoniwa-EJemcsRL", container_path: "/"
[2022-08-21T09:14:11Z INFO hakoniwa::executor] Mount point: host_path: "", container_path: "/proc", fstype: "proc"
[2022-08-21T09:14:11Z INFO hakoniwa::executor] Mount point: host_path: "/usr/bin", container_path: "/bin", fstype: "", rw: false
[2022-08-21T09:14:11Z INFO hakoniwa::executor] Mount point: host_path: "/usr/lib", container_path: "/lib", fstype: "", rw: false
[2022-08-21T09:14:11Z INFO hakoniwa::executor] Mount point: host_path: "/usr/lib", container_path: "/lib64", fstype: "", rw: false
[2022-08-21T09:14:11Z INFO hakoniwa::executor] Mount point: host_path: "/usr", container_path: "/usr", fstype: "", rw: false
[2022-08-21T09:14:11Z INFO hakoniwa::executor] Mount point: host_path: "/dev/null", container_path: "/dev/null", fstype: "", rw: true
[2022-08-21T09:14:11Z INFO hakoniwa::executor] Mount point: host_path: "/dev/random", container_path: "/dev/random", fstype: "", rw: false
[2022-08-21T09:14:11Z INFO hakoniwa::executor] Mount point: host_path: "/dev/urandom", container_path: "/dev/urandom", fstype: "", rw: false
[2022-08-21T09:14:11Z INFO hakoniwa::executor] Mount point: host_path: "/dev/zero", container_path: "/dev/zero", fstype: "", rw: false
[2022-08-21T09:14:11Z INFO hakoniwa::executor] UID map: host_id: 5001, container_id: 5001
[2022-08-21T09:14:11Z INFO hakoniwa::executor] GID map: host_id: 1000, container_id: 1000
[2022-08-21T09:14:11Z INFO hakoniwa::executor] Seccomp: disabled
[2022-08-21T09:14:11Z INFO hakoniwa::executor] Execve: /bin/bash ["/bin/bash"]
bash: cannot set terminal process group (-1): Inappropriate ioctl for device
bash: no job control in this shell
bash-5.1$ pwd
/
bash-5.1$ ls
bin dev lib lib64 proc usr
bash-5.1$ ls /dev
null random urandom zero
bash-5.1$ ls /proc
1 bus crypto execdomains ioports kmsg locks mtrr scsi sys uptime
4 cgroups devices fb irq kpagecgroup meminfo net self sysrq-trigger version
acpi cmdline diskstats filesystems kallsyms kpagecount misc pagetypeinfo slabinfo sysvipc vmallocinfo
asound config.gz dma fs kcore kpageflags modules partitions softirqs thread-self vmstat
bootconfig consoles driver interrupts key-users latency_stats mounts pressure stat timer_list zoneinfo
buddyinfo cpuinfo dynamic_debug iomem keys loadavg mtd schedstat swaps tty
bash-5.1$ exit
exit
[2022-08-21T09:14:27Z INFO hakoniwa::executor] Result: {"status":"OK","reason":"","exit_code":0,"start_time":"2022-08-21T09:14:11.058546277Z","real_time":{"secs":16,"nanos":460452556},"system_time":{"secs":0,"nanos":8744000},"user_time":{"secs":0,"nanos":3149000},"max_rss":3780}
More examples can be found in [hakoniwa-cli/examples].
The code below is almost eq to hakoniwa run --policy-file KISS-policy.toml -- /bin/bash:
```rust use hakoniwa::{Error, Sandbox, SandboxPolicy, Stdio};
fn main() -> Result<(), Error> { let policy = SandboxPolicy::from_str( r#" mounts = [ { source = "/bin" , target = "/bin" }, { source = "/lib" , target = "/lib" }, { source = "/lib64" , target = "/lib64" }, { source = "/usr" , target = "/usr" }, { source = "/dev/null" , target = "/dev/null" , rw = true }, { source = "/dev/random" , target = "/dev/random" }, { source = "/dev/urandom", target = "/dev/urandom" }, { source = "/dev/zero" , target = "/dev/zero" }, ]
[env] TERM = {{ os_env "TERM" }} "#, )?;
let mut sandbox = Sandbox::new();
sandbox.with_policy(policy);
let prog = std::env::var("SHELL").unwrap_or_else(|_| String::from("/bin/sh"));
let argv = vec![&prog];
let mut executor = sandbox.command(&prog, &argv);
let result = executor
// .ro_bind("/etc", "/myetc")? // --ro-bind /etc:/myetc
// .rw_bind("/data", "/data")? // --rw-bind /data
// .limit_cpu(Some(2)) // --limit-cpu 2
// .limit_walltime(Some(5)) // --limit-walltime 5
.stdout(Stdio::inherit())
.stderr(Stdio::inherit())
.stdin(Stdio::inherit())
.run();
dbg!(result);
Ok(())
} ```
More examples can be found in [hakoniwa/examples].
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Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.