unifier-cli 0.2.0

Filesystem postbox for inter-process communication via a Unix tree
Documentation 
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//! Chroot administration: isolated subtrees under `chroots/<name>/`.

use std::fs;
use std::path::Path;

use crate::constants::{CHROOTS, CRON, KEYS, MAILBOX};
use crate::error::{Error, Result};
use crate::scope::validate_chroot_name;

pub fn init_chroot(global_root: &Path, name: &str) -> Result<()> {
    validate_chroot_name(name)?;
    let base = global_root.join(CHROOTS).join(name);
    if base.exists() {
        return Err(Error::msg(format!("chroot already exists: {name}")));
    }
    for sub in [KEYS, MAILBOX, CRON] {
        fs::create_dir_all(base.join(sub))?;
    }
    Ok(())
}

pub fn list_chroots(global_root: &Path) -> Result<Vec<String>> {
    let dir = global_root.join(CHROOTS);
    if !dir.is_dir() {
        return Ok(Vec::new());
    }
    let mut names = Vec::new();
    for entry in fs::read_dir(&dir)? {
        let entry = entry?;
        if entry.file_type()?.is_dir() {
            names.push(entry.file_name().to_string_lossy().into_owned());
        }
    }
    names.sort();
    Ok(names)
}