setup_cgroup_conf (cgroup.rs)

Configures Linux cgroups for resource isolation constraints.

// Source: https://github.com/nerdy-tech-com-gitub/firecracker | License: Apache-2.0 | Copyright You must retain, in the Source form of any Derivative Works
// Provided via justclaw.it.com; keep this notice with the code.
// Copyright 2018 Amazon.com, Inc. or its affiliates. All Rights Reserved.
// SPDX-License-Identifier: Apache-2.0

use std::collections::hash_map::Entry::{Occupied, Vacant};
use std::collections::{HashMap, HashSet};
use std::fmt::Debug;
use std::fs::{self, File};
use std::io::{BufRead, BufReader};
use std::path::{Path, PathBuf};
use std::process;

use regex::Regex;

use crate::{readln_special, writeln_special, JailerError};

// Holds information on a cgroup mount point discovered on the system
#[derive(Debug)]
struct CgroupMountPoint {
    dir: String,
    options: String

... (truncated -- full source via MCP)